US20120247739A1 - Electronic device and fan - Google Patents
Electronic device and fan Download PDFInfo
- Publication number
- US20120247739A1 US20120247739A1 US13/398,489 US201213398489A US2012247739A1 US 20120247739 A1 US20120247739 A1 US 20120247739A1 US 201213398489 A US201213398489 A US 201213398489A US 2012247739 A1 US2012247739 A1 US 2012247739A1
- Authority
- US
- United States
- Prior art keywords
- wall
- rotor
- fan
- abutment portion
- fan case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/203—Cooling means for portable computers, e.g. for laptops
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
- F04D25/062—Details of the bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/051—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/052—Axially shiftable rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/424—Double entry casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- Embodiments described herein relate generally to an electronic device and a fan.
- the fan comprises a fan case; a rotor that comprises an impeller and a rotary shaft, that is housed in the fan case, and that rotates about the axis of the rotary shaft; and a bearing for supporting the rotary shaft.
- FIG. 1 is an exemplary perspective view of a mobile personal computer according to a first embodiment
- FIG. 2 is an exemplary plan view of the mobile personal computer in the first embodiment
- FIG. 3 is an exemplary rear perspective view of the mobile personal computer in the first embodiment
- FIG. 4 is an exemplary perspective view of a fan in the first embodiment
- FIG. 5 is an exemplary bottom view of the fan in the first embodiment
- FIG. 6 is an exemplary cross-sectional view of the fan in the first embodiment
- FIG. 7 is an exemplary plan view of an impeller in the first embodiment
- FIG. 8 is an exemplary cross-sectional view of the fan according to a first modification example of the first embodiment
- FIG. 9 is an exemplary cross-sectional view of the fan according to a second modification example of the first embodiment.
- FIG. 10 is an exemplary cross-sectional view of the fan according to a second embodiment
- FIG. 11 is an exemplary cross-sectional view of a movement restriction mechanism in the second embodiment
- FIG. 12 is an exemplary cross-sectional view of the movement restriction mechanism according to a first modification example of the second embodiment
- FIG. 13 is an exemplary cross-sectional view of the movement restriction mechanism according to a second modification example of the second embodiment
- FIG. 14 is an exemplary cross-sectional view of the movement restriction mechanism according to a third modification example of the second embodiment
- FIG. 15 is an exemplary cross-sectional view of the movement restriction mechanism according to a fourth modification example of the second embodiment
- FIG. 16 is an exemplary cross-sectional view of the movement restriction mechanism according to a fifth modification example of the second embodiment
- FIG. 17 is an exemplary cross-sectional view of the fan according to a third embodiment
- FIG. 18 is an exemplary cross-sectional view of the fan according to a modification example of the third embodiment.
- FIG. 19 is an exemplary cross-sectional view of the fan according to a fourth embodiment.
- FIG. 20 is an exemplary cross-sectional view of the fan according to a fifth embodiment
- FIG. 21 is an exemplary cross-sectional view of the fan according to a sixth embodiment.
- FIG. 22 is an exemplary cross-sectional view of the fan according to a modification example of the sixth embodiment.
- FIG. 23 is an exemplary cross-sectional view of the fan according to a seventh embodiment
- FIG. 24 is an exemplary cross-sectional view of the fan according to a modification example of the seventh embodiment.
- FIG. 25 is an exemplary plan view of the mobile personal computer according to an eighth embodiment.
- FIG. 26 is an exemplary perspective view of a personal computer according to a ninth embodiment.
- FIG. 27 is an exemplary perspective view of a television receiver according to a tenth embodiment.
- an electronic device comprises a housing, a display device, a fan case, a rotor, an opening, and a prevention portion.
- a first opening and a second opening are formed in the housing.
- the display device is contained in the housing and comprises a display screen which is exposed through the first opening.
- the fan case is contained in the housing and comprises a first wall in which a first air inlet is formed, a second wall which faces the first wall and in which a second air inlet is formed, and a side wall which connects the first wall to the second wall.
- An air outlet from which air to be supplied to the second opening is discharged is formed in the side wall.
- the rotor comprises a column member, an impeller fixed to the column member, and an abutment portion.
- the rotor is contained in the fan case between the first wall and the second wall and is configured to rotate about an axis of the column member.
- the opening is formed in the second wall. At least a portion of the column member is disposed in the opening.
- the prevention portion is disposed in the fan case. The abutment portion can contact or separate from the prevention portion. The prevention portion is configured to prevent the column member from moving in a direction away from the opening when the abutment portion contacts the prevention portion.
- a notebook-sized mobile personal computer 1 which functions as an electronic device and as a television receiver, comprises a rectangular and flat first main body 2 and a rectangular and flat second main body 3 as illustrated in FIG. 1 .
- the first main body 2 and the second main body 3 are connected in a relatively rotatable manner via a joint 4 .
- a display panel 6 which is a display device such as a liquid crystal display (LCD) having a touch panel 5 on the front face (i.e., on a display screen 6 a ) thereof, and a push button mechanism 7 are arranged in an exposed manner on a front face 2 b that is the external face of a housing 2 a .
- a display panel 9 which is a display device such as an LCD having a touch panel 8 on the front face (i.e., on a display screen 9 a ) thereof, and a push button mechanism 10 are arranged in an exposed manner on a front face 3 b that is the external face of a housing 3 a .
- the width direction (horizontal direction) of the second main body 3 is defined as the X direction
- the apical direction of the second main body 3 is defined as the Y direction
- the height direction of the second main body 3 is defined as the Z direction.
- the X axis, the Y axis, and the Z axis are mutually orthogonal.
- the display panel 6 and a cover body 7 a of the push button mechanism 7 as well as the display panel 9 and a cover body 10 a of the push button mechanism 10 lie in an exposed condition. In such open state, the user is able to perform operations.
- the front faces 2 b and 3 b face each other from up close in such a way that the display panel 6 and the cover body 7 a of the push button mechanism 7 are hidden by the housing 2 a ; while the display panel 9 and the cover body 10 a of the push button mechanism 10 are hidden by the housing 3 a.
- the touch panels 5 and 8 , the push button mechanisms 7 and 10 , and a microphone function as input operation modules; while the display panels 6 and 9 and speakers (not illustrated) function as output operation modules.
- the keyboard or the click buttons also function as input operation modules.
- the joint 4 is a component for joining the first main body 2 to the second main body 3 , and is configured separately from the first main body 2 and the second main body 3 .
- the joint 4 joins an end portion 2 c at the base end of the first main body 2 with an end portion 3 c at the base end of the second main body 3 .
- rectangular notches 2 e and 3 e are formed except over the respective ends.
- Each of the rectangular notches 2 e and 3 e comprises a long opening along the longitudinal direction and has only a shallow depth.
- the joint 4 is set to have a length L that is slightly shorter than the width of the notches 2 e and 3 e . Moreover, the joint 4 is set to have a width W that is substantially equal to the thickness of the mobile personal computer 1 when the first main body 2 and the second main body 3 are closed together in the folded state.
- the first main body 2 and the joint 4 are joined in a relatively rotatable manner around a rotation axis Ax 1 via a first hinge mechanism 11 A.
- the second main body 3 and the joint 4 are joined in a relatively rotatable manner around a rotation axis Ax 2 via a second hinge mechanism 11 B.
- the rotary shafts Ax 1 and Ax 2 lie parallel to each other.
- the first hinge mechanism 11 A and the second hinge mechanism 11 B are coupled together so that the relative rotation angle around the rotation axis Ax 1 of the first main body 2 with respect to the joint 4 is identical to the relative rotation angle around the rotation axis Ax 2 of the second main body 3 with respect to the joint 4 .
- the two relative rotation directions with respect to the joint 4 are opposite to each other.
- the joint 4 when the user operates the joint 4 for the purpose of opening either one of the first main body 2 and the second main body 3 , the mobile personal computer 1 falls into the open state.
- the joint 4 is operated for the purpose of closing either one of the first main body 2 and the second main body 3 , the mobile personal computer 1 falls into the folded state.
- the mobile personal computer 1 falls into the open state.
- the first main body 2 and the second main body 3 are closed, the mobile personal computer 1 falls into the folded state.
- the display panels 6 and 9 are formed in the shapes of flat and rectangular parallelepipeds, and are housed in the housing 2 a and 3 a , respectively. Moreover, the display panels 6 and 9 receive display signals from control circuits (not illustrated), which are configured with an electronic component 22 or the like that is mounted on a substrate 23 disposed inside the housing 3 a of the second main body 3 . As a result, each of the display panels 6 and 9 displays pictures including stationary pictures and motion pictures.
- the electronic component 22 is, for example, a central processing unit (CPU).
- the control circuits in the mobile personal computer 1 are a picture signal processing circuit, a tuner, an HDMI signal processing module (HDMI stands for high-definition multimedia interface), an audio-video (AV) input terminal, a remote-control signal receiving module, a control module, a selector, an onscreen display interface, a memory module (such as a read only memory (ROM), a random access memory (RAM), or a hard disk drive (HDD)), an audio signal processing circuit, an interface circuit, and various controllers (no control circuit is illustrated).
- the mobile personal computer 1 also comprises built-in speakers (not illustrated) for the purpose of audio output.
- the housing 3 a of the second main body 3 comprises a mask 20 and a case 21 constituting the outer housing.
- the mask 20 and the case 21 constituting the outer housing are integratedly coupled by screwing, engagement, or fitting; and form the outline of the housing 3 a.
- the housing 3 a houses the display panel 9 that comprises the display screen 9 a exposed on the front side, and also houses the substrate 23 that is fixed to the case 21 via an inner plate.
- On the mask 20 is formed a first opening 20 a , through which is exposed the display screen 9 a of the display panel 9 . If put in another way, the first opening 20 a serves as an LCD opening.
- air inlets 3 j are formed at a rear end 21 b at the base end side of a bottom wall 21 a.
- the air inlets 3 j represent a collection of a plurality of (a number of) small holes formed through the bottom wall 21 a .
- the air inlets 3 j i.e., the region having small holes formed thereon
- an air outlet 3 h is also formed inside the housing 3 a . Inside the housing 3 a , a ventilation flue is installed from the air inlets 3 j up to the air outlet 3 h.
- a fan 50 Midway in the ventilation flue is installed a fan 50 , the explanation of which is given later.
- the air taken in from the air inlets 3 j due to the fan 50 is then thrown out from the air outlet 3 h.
- components such as the electronic component 22 mounted on the substrate 23 get cooled.
- an engaging member 3 m at a position close to the fan 50 and the air inlets 3 j.
- the engaging member 3 m is, for example, a claw (claw of latch mechanism) for enabling engagement and disengagement between the first main body 2 and the second main body 3 .
- the engaging member 3 m itself can engage with or disengage from the first main body 2 .
- the fan 50 is disposed inside the housing 3 a of the second main body 3 .
- the fan 50 performs ventilation inside the housing 3 a so that the components such as the electronic component 22 mounted on the substrate 23 get cooled.
- the fan 50 comprises a fan case 51 , a rotor 52 , a bearing 53 , and a motor 54 .
- the fan 50 is assumed to be a centrifugal fan.
- gaps between the components are illustrated in an enlarged manner in FIG. 6 .
- the fan case 51 comprises a first wall 51 a and a second wall 51 b that form a pair of opposite walls, and comprises a side wall 51 c that joins the first wall 51 a to the second wall 51 b . If put in another way, the fan case 51 serves as a casing or a housing. The fan case 51 is disposed in the thickness direction of the housing 3 a in such a manner that at least some portion of the fan case 51 overlaps with the display panel 9 .
- first wall 51 a In the first wall 51 a is formed a first air inlet 51 d and in the second wall 51 b are formed a plurality of second air inlets 51 e . In contrast, in the side wall 51 c is formed a air outlet 51 f . In the central part of the second wall 51 b is formed an island-shaped mounted wall 51 h . Meanwhile, each of the second air inlets 51 e is formed between a pair of adjacent spokes 51 g . Moreover, the first air inlet 51 d , which is formed on the first wall 51 a , is positioned opposite to an abutment portion 58 described later.
- the first wall 51 a is made of, for example, metal That makes it possible to make the first wall 51 a comparatively thinner.
- the first wall 51 a represents a top panel.
- the second wall 51 b and the side wall 51 c are integratedly formed using resin.
- the first wall 51 a is detachably locked with a locking mechanism such as a claw 51 k .
- the first wall 51 a does not have the bearing 53 disposed thereon.
- the second wall 51 b represents a bottom wall.
- the fan case 51 is housed inside the housing 3 a , and comprises the first wall 51 a in which is formed the first air inlet 51 d ; comprises the second wall 51 b in which are formed the second air inlets 51 e and which lies opposite to the first wall 51 a ; and comprises the side wall 51 c in which is formed the air outlet 51 f serving as a second opening.
- the air to be supplied to the air outlet 3 h or the air reaching the air outlet 3 h is discharged from the air outlet 51 f .
- the side wall 51 c joins the first wall 51 a to the second wall 51 b.
- the rotor 52 comprises a impeller 61 and a rotary shaft 62 .
- the rotor 52 is housed in the fan case 51 and rotates about the axis of the rotary shaft 62 . If put in another way, the rotor 52 rotates about the axis of the rotary shaft 62 as the rotating shaft (shaft).
- the rotary shaft 62 is elongated along the direction in which the first wall 51 a and the second wall 51 b face each other. In the first embodiment, the rotary shaft 62 represents a column member, while the rotor 52 represents a rotary member.
- the impeller 61 comprises abase 61 a to which is fixed one end of the rotary shaft 62 and comprises a plurality of blades 61 c extending from a periphery 61 b of the base 61 a .
- the impeller 61 is made of resin or metal.
- the base 61 a is cuplike in shape and comprises an opening facing toward the second wall 51 b . More specifically, the base 61 a comprises a base wall 61 f that is disc-like in shape and comprises a side wall 61 g extending from the peripheral border of the base wall 61 f toward the second wall 51 b.
- the outer periphery of the side wall 61 g serves as the periphery 61 b of the base 61 a .
- On the inner surface of the base wall 61 f is formed a concave shaft fastening member 61 h in which one end of the rotary shaft 62 is inserted and fastened.
- an annular joining member 61 d which joins the outer borders of the blades 61 c facing the first wall 51 a .
- an end 61 e on the side of the first wall 51 a is formed to have a bent shape. More specifically, starting from the inner peripheral region toward the outer peripheral region, the end 61 e is formed to bend (tilt) away from the first wall 51 a.
- the bearing 53 is disposed in the fan case 51 for the purpose of supporting the rotary shaft 62 in a rotatable manner.
- the bearing 53 is cylindrical in shape and is configured as, for example, a fluid dynamic bearing or an oil retaining bearing. Alternatively, the bearing 53 can also be configured as a ball bearing.
- the bearing 53 is fit in an opening 51 p that is formed on the inside of a cylindrical member 51 i, which is erected on the inner surface of the second wall 51 b . As a result, the bearing 53 gets fixed to the second wall 51 b .
- a thrust plate 55 is fixed that supports the other end face of the rotary shaft 62 along the axial direction thereof.
- the opening 51 p in which the bearing 53 is fit is formed on the second wall 51 b .
- the opening 51 p is housed at least a part of the rotor 52 representing a column member.
- the bearing 53 represents a support that houses at least a part of the rotor 52 , which is a rotating member, and that supports the rotor 52 in a rotatable manner.
- the motor 54 comprises a stator 54 a, a rotor 54 b that surrounds the stator 54 a, and a circuit board 54 c.
- the stator 54 a further comprises an iron core 54 e equipped with a winding wire 54 d.
- the rotor 54 b further comprises a cylindrical yoke 54 f and a plurality of magnets 54 g that are fixed spaced apart from each other on the inner periphery and along the circumferential direction of the yoke 54 f . Meanwhile, the yoke 54 f is fixed on the inner periphery of the side wall 61 g of the base 61 a.
- To the circuit board 54 c is connected an electrically-conductive lead 56 .
- the circuit board 54 c receives electrical power from the electrically-conductive lead 56 and transmits that electrical power to the winding wire 54 d .
- the rotor 54 b rotates thereby causing the rotor 52 to rotate.
- the movement restriction mechanism 57 that restricts the rotor 52 from moving in the direction away from the bearing 53 .
- the movement restriction mechanism 57 comprises the abutment portion 58 that is formed in the rotor 52 and a prevention member 59 that is formed in the fan case 51 .
- the abutment portion 58 is formed on the base 61 a . More specifically, the outer surface at the central portion of the base wall 61 f of the base 61 a constitutes the abutment portion 58 .
- the prevention member 59 is formed on the outside of the bearing 53 , and comprises a projection 59 a and a support member 59 b .
- the prevention member 59 is fixed to an outer surface 51 j of the first wall 51 a of the fan case 51 .
- the support member 59 b is rod-like in shape and is disposed across the first air inlet 51 d .
- the both ends of the support member 59 b are fixed to the outer surface 51 j of the first wall 51 a by means of, for example, adhesion or screwing.
- the support member 59 b is disposed on the outer surface 51 j of the first wall 51 a and comprises the projection 59 a fixed thereto in an integrated manner.
- the projection 59 a protrudes from the support member 59 b toward the abutment portion 58 , and is inserted in the first air inlet 51 d and lies inside the fan case 51 .
- the projection 59 a can come into and out of contact with the abutment portion 58 .
- the abutment portion 58 can contact or separate from the projection 59 a .
- Between the projection 59 a and the abutment portion 58 exists a clearance of a predetermined distance L 1 , which is shorter than a minimum distance L 2 between the first wall 51 a of the fan case 51 and the rotor 52 in the state when the predetermined distance L 1 is secured. In such a configuration, it is possible to reduce the rotational resistance of the rotor 52 .
- the prevention member 59 is formed on the fan case 51 and can come into and out of contact with the abutment portion 58 .
- the prevention member 59 functions as a restricting member and prevents the rotary shaft 62 , which represents a column member, from moving away from the opening 51 p .
- the prevention member 59 is formed on the inner surface of the housing 3 a that covers the side opposite to the display screen 9 a of the display panel 9 . Hence, the prevention member 59 restricts the rotor 52 from moving in the opposite direction of the display panel 9 .
- the prevention member 59 is formed in the outside of the bearing 53 , which represents a support portion, and when the prevention member 59 contacts the rotor 52 (the abutment portion 58 ), the prevention member 59 prevents the rotor 52 from moving away from the bearing 53 .
- the rotor 52 is able to either rotate or stop rotating while maintaining the restriction distance L 1 between the projection 59 a and the abutment portion 58 .
- the abutment portion 58 formed on the rotor 52 comes into contact with the prevention member 59 formed in the fan case 51 .
- the prevention member 59 restricts the rotor 52 from moving in the direction away from the bearing 53 .
- the prevention member 59 restricts the rotary shaft 62 , which represents a column member, from moving away from the opening 51 p .
- the prevention member 59 prevents the rotary shaft 62 from moving in the direction away from the opening 51 p when the abutment portion 58 contacts the prevention member 59 .
- the rotor 52 returns to the position of maintaining the restriction distance L 1 between the projection 59 a and the abutment portion 58 . In this way, in the first embodiment, the rotor 52 is restricted from moving along the axial direction.
- the engaging member 3 m since the engaging member 3 m is disposed at a position close to the fan 50 , the vibrations generated due to the movement of the engaging member 3 m easily reach the fan 50 . Moreover, if a component such as a memory is installed near the fan 50 , then the vibrations generated due to such installation also easily reach the fan 50 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 . That makes it possible to prevent the impeller 61 of the rotor 52 from making contact with the first wall 51 a of the fan case 51 . As a result, even in case the fan 50 gets subjected to a shock, the impeller 61 can successfully keep on rotating. That prevents a decline in the air blowing capacity of the fan 50 .
- the prevention member 59 is disposed on the outside of the bearing 53 .
- the prevention member 59 is disposed on the inside of the bearing 53 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 , it also becomes possible to prevent the rotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with the fan case 51 . That helps in preventing the noise from occurring.
- the end 61 e of the joining member 61 d that lies on the side of the first wall 51 a is formed to have a bent shape.
- the abutment portion 58 which constitutes the movement restriction mechanism 57 and which is formed in the rotor 52 , is formed to be a projection.
- the abutment portion 58 protrudes toward the prevention member 59 .
- the prevention member 59 constituting the movement restriction mechanism 57 does not comprise the projection 59 a .
- the abutment portion 58 can come into and out of contact with one surface 59 c of the support member 59 b of the prevention member 59 . In such a configuration, the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the fan 50 according to the second modification example does not comprise the joining member 61 d .
- an end 611 of each blade 61 c facing the first wall 51 a has a bent shape. In such a configuration, even in case the rotor 52 tilts and makes contacts with the fan case 51 , it becomes possible to prevent the rotor 52 from getting hung up on the fan case 51 .
- the movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment.
- the prevention member 59 of the movement restriction mechanism 57 is formed inside the fan case 51 .
- the fan case 51 comprises the second wall 51 b serving as the wall on which the bearing 53 is disposed.
- the abutment portion 58 of the movement restriction mechanism 57 protrudes from a periphery 62 a of the rotary shaft 62 .
- the abutment portion 58 is formed to be annular in shape and gets fit in a ring-like groove 62 b that is formed on the periphery 62 a of the rotary shaft 62 .
- the portion of the abutment portion 58 that protrudes from the periphery 62 a of the rotary shaft 62 is annular in shape.
- the prevention member 59 of the movement restriction mechanism 57 is formed on the second wall 51 b . More specifically, the prevention member 59 is fixed to the second wall 51 b using the cylindrical member 51 i . Moreover, the prevention member 59 is formed to be annular in shape and is fixed to an inner periphery 51 m of the cylindrical member 51 i. The prevention member 59 is positioned opposite to the abutment portion 58 and can come into and out of contact with the abutment portion 58 . Moreover, in the prevention member 59 , an annular member 63 is disposed on the side of the second wall 51 b in such a way that the abutment portion 58 is positioned between the prevention member 59 and the annular member 63 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the abutment portion 58 restricts the movement of oil that flows out of the bearing 53 . That makes it possible to prevent the spread of oil to the outside of the fan case 51 .
- the prevention member 59 is rod-like (salient-like) in shape and is fixed on the inner periphery 51 m of the cylindrical member 51 i.
- the abutment portion 58 is formed in an integrated manner with the rotary shaft 62 .
- the abutment portion 58 is annular in shape and protrudes from the periphery 62 a of the rotary shaft 62 .
- the prevention member 59 comprises the same configuration to the configuration according to the first modification example. In such configurations too, the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the abutment portion 58 is rod-like in shape and protrudes from the periphery 62 a of the rotary shaft 62 . Consequently, the protruding portion of the abutment portion 58 that protrudes from the periphery 62 a of the rotary shaft 62 is salient-like in shape.
- the abutment portion 58 is fit into a hole 62 c that is formed on the rotary shaft 62 .
- the abutment portion 58 is formed in an integrated manner with the rotary shaft 62 .
- the abutment portion 58 is rod-like in shape and protrudes from the periphery 62 a of the rotary shaft 62 . Consequently, the protruding portion of the abutment portion 58 that protrudes from the periphery 62 a of the rotary shaft 62 is salient-like in shape.
- the abutment portion 58 is rod-like (shaft-like) in shape and protrudes on both sides from the periphery 62 a of the rotary shaft 62 . Consequently, the protruding portions of the abutment portion 58 that protrude from the periphery 62 a of the rotary shaft 62 are salient-like in shape.
- the abutment portion 58 is fit into a hole 62 d that is formed on the rotary shaft 62 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment.
- the prevention member 59 of the movement restriction mechanism 57 is a projection that protrudes toward the fan 50 from an inner plate 3 g , which constitutes the housing 3 a of the second main body 3 .
- the abutment portion 58 comprises the same configuration as the configuration according to the first embodiment and is formed in the rotor 52 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the abutment portion 58 which constitutes the movement restriction mechanism 57 and which is formed in the rotor 52 , is formed to be a projection.
- the abutment portion 58 protrudes toward the prevention member 59 .
- the prevention member 59 constituting the movement restriction mechanism 57 is flat-like in shape.
- the abutment portion 58 can come into and out of contact with the prevention member 59 . In such a configuration, the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the configuration differs from the first embodiment in the point that the housing 3 a comprises a bent portion 3 n along which the fan 50 is bent.
- the first wall 51 a comprises a bent portion 510 that is bent along the bent portion 3 n.
- the first wall 51 a of the fan case 51 forms a concave shape (valley-like shape) along the bent portion 3 n.
- the second wall 51 b comprises a bent portion 51 n that is bent along the bent portion 3 n.
- each blade 61 c comprises a bent portion 61 m that is bent along the bent portion 3 n.
- the first wall 51 a of the fan case has a concave shape (valley-like shape), it becomes possible to prevent a contact between the rotor 52 and the first wall 51 a even if the rotor 52 tilts.
- the configuration differs from the first embodiment in the point that the first wall 51 a of the fan case 51 in the fan 50 has a projection-like shape (mountain-like shape). More particularly, the first wall 51 a has such a projection-like shape in which, starting from the ends toward the central part, the first wall 51 a goes on moving away from the second wall 51 b.
- the movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment. As illustrated in FIG. 21 , the prevention member 59 of the movement restriction mechanism 57 is formed inside the fan case 51 .
- the fan case 51 comprises the second wall 51 b serving as the wall on which the bearing 53 is disposed.
- the abutment portion 58 of the movement restriction mechanism 57 is formed in one of the blades 61 c.
- the abutment portion 58 is formed as a substantially L-shaped locking toggle in which a first portion 58 d and a second portion 58 e , which extends toward the rotary shaft 62 , form a substantially right angle.
- the prevention member 59 of the movement restriction mechanism 57 is formed on the second wall 51 b.
- the prevention member 59 is formed to be annular in shape and surrounds the cylindrical member 51 i.
- the prevention member 59 comprises a cylindrical first portion 59 d and an annular flanged second portion 59 e that is formed on the outer periphery of the cylindrical first portion 59 d.
- the second portion 58 e of the abutment portion 58 can come into and out of contact with the second portion 59 e of the prevention member 59 .
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- the second portion 58 e of the abutment portion 58 extends from the first portion 58 d in the direction going away from the rotary shaft 62 .
- the second portion 59 e of the prevention member 59 is formed on the inner periphery of the first portion 59 d.
- the prevention member 59 abuts against the abutment portion 58 so as to restrict the rotor 52 from moving in the direction away from the bearing 53 .
- a seventh embodiment differs from the first embodiment in the point that a salient-like second abutment portion 71 is formed on the rotor 52 and an annular-projection-like third abutment portion 72 is formed in the fan case 51 .
- the second abutment portion 71 and the third abutment portion 72 are made of, for example, resin.
- the second abutment portion 71 protrudes from the joining member 61 d. That is, the second abutment portion 71 is formed on the outer peripheral region of the rotor 52 . Meanwhile, the third abutment portion 72 protrudes from the inner surface of the first wall 51 a. The second abutment portion 71 and the third abutment portion 72 are spaced apart opposite to each other. The distance between the second abutment portion 71 and the third abutment portion 72 is equal to the minimum distance L 2 , which is the also the distance between the first wall 51 a of the fan case 51 and the rotor 52 . Meanwhile, alternatively, the second abutment portion 71 can be formed in the fan case 51 , while the third abutment portion 72 can be formed on the rotor 52 .
- the second abutment portion 71 is formed in the base 61 a and the third abutment portion 72 is formed on the first wall 51 a of the fan case 51 at a position opposite to the second abutment portion 71 .
- the second abutment portion 71 can be formed in the fan case 51 and the third abutment portion 72 can be formed on the rotor 52 .
- the configuration differs from the first embodiment in the point that the mobile personal computer 1 is a slate-type mobile personal computer.
- the mobile personal computer 1 according to the eighth embodiment comprises the same configuration as the configuration of the second main body 3 according to the first embodiment. More particularly, the mobile personal computer 1 comprises a flat housing 100 ; a display panel 102 , which is a display device such as an LCD having a touch panel 101 on the front face thereof; the fan 50 housed in the housing 100 ; the substrate 23 ; and the electronic component 22 mounted on the substrate 23 .
- the housing 100 are formed the air inlets 3 j and the air outlet 3 h.
- a ventilation flue is installed starting from the air inlets 3 j to the air outlet 3 h. Midway in the ventilation flue is installed the fan 50 .
- a first opening 100 a is formed on the housing 100 , through which is exposed a display screen 102 a of the display panel 102 .
- the fan 50 is identical to that described in the first embodiment.
- the impeller 61 can successfully keep on rotating. That prevents a decline in the air blowing capacity of the fan 50 .
- the fan 50 need not be identical to that described only in the first embodiment. That is, it is also possible to implement the fan 50 according to the other embodiments or modification examples described above.
- FIG. 26 is an illustration diagram of a notebook-sized personal computer 200 having a keyboard 201 (according to a ninth embodiment), and FIG. 27 is an illustration diagram of a television receiver 300 (according to a tenth embodiment).
- modules of the systems described herein can be implemented as software applications, hardware and/or software modules, or components on one or more computers, such as servers. While the various modules are illustrated separately, they may share some or all of the same underlying logic or code.
Abstract
According to one embodiment, a fan includes a fan case comprising a first wall in which a first air inlet is formed, a second wall facing the first wall in which a second air inlet is formed, and a side wall which connects the first wall to the second wall and in which an air outlet is formed; a rotor comprising a shaft, an impeller fixed to the shaft, and an abutment portion, and contained in the fan case between the first and second walls and configured to rotate about the shaft; a bearing in the second wall and configured to support the shaft; and a prevention portion that disposed in the fan case and that the abutment portion can contact or separate from and that is configured to prevent the rotor from moving in a direction away from the bearing when the abutment portion contacts the prevention portion.
Description
- This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2011-080266, filed Mar. 31, 2011; the entire contents of which are incorporated herein by reference.
- Embodiments described herein relate generally to an electronic device and a fan.
- Typically, electronic devices each of which is equipped with a fan are available. In such electronic devices, the fan comprises a fan case; a rotor that comprises an impeller and a rotary shaft, that is housed in the fan case, and that rotates about the axis of the rotary shaft; and a bearing for supporting the rotary shaft.
- If such a typical fan is subjected to a shock by any reason, the rotor moves in the direction away from the bearing. That causes improper rotations of the rotor, which in turn leads to a decline in the air blowing capacity.
- A general architecture that implements the various features of the invention will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention.
-
FIG. 1 is an exemplary perspective view of a mobile personal computer according to a first embodiment; -
FIG. 2 is an exemplary plan view of the mobile personal computer in the first embodiment; -
FIG. 3 is an exemplary rear perspective view of the mobile personal computer in the first embodiment; -
FIG. 4 is an exemplary perspective view of a fan in the first embodiment; -
FIG. 5 is an exemplary bottom view of the fan in the first embodiment; -
FIG. 6 is an exemplary cross-sectional view of the fan in the first embodiment; -
FIG. 7 is an exemplary plan view of an impeller in the first embodiment; -
FIG. 8 is an exemplary cross-sectional view of the fan according to a first modification example of the first embodiment; -
FIG. 9 is an exemplary cross-sectional view of the fan according to a second modification example of the first embodiment; -
FIG. 10 is an exemplary cross-sectional view of the fan according to a second embodiment; -
FIG. 11 is an exemplary cross-sectional view of a movement restriction mechanism in the second embodiment; -
FIG. 12 is an exemplary cross-sectional view of the movement restriction mechanism according to a first modification example of the second embodiment; -
FIG. 13 is an exemplary cross-sectional view of the movement restriction mechanism according to a second modification example of the second embodiment; -
FIG. 14 is an exemplary cross-sectional view of the movement restriction mechanism according to a third modification example of the second embodiment; -
FIG. 15 is an exemplary cross-sectional view of the movement restriction mechanism according to a fourth modification example of the second embodiment; -
FIG. 16 is an exemplary cross-sectional view of the movement restriction mechanism according to a fifth modification example of the second embodiment; -
FIG. 17 is an exemplary cross-sectional view of the fan according to a third embodiment; -
FIG. 18 is an exemplary cross-sectional view of the fan according to a modification example of the third embodiment; -
FIG. 19 is an exemplary cross-sectional view of the fan according to a fourth embodiment; -
FIG. 20 is an exemplary cross-sectional view of the fan according to a fifth embodiment; -
FIG. 21 is an exemplary cross-sectional view of the fan according to a sixth embodiment; -
FIG. 22 is an exemplary cross-sectional view of the fan according to a modification example of the sixth embodiment; -
FIG. 23 is an exemplary cross-sectional view of the fan according to a seventh embodiment; -
FIG. 24 is an exemplary cross-sectional view of the fan according to a modification example of the seventh embodiment; -
FIG. 25 is an exemplary plan view of the mobile personal computer according to an eighth embodiment; -
FIG. 26 is an exemplary perspective view of a personal computer according to a ninth embodiment; and -
FIG. 27 is an exemplary perspective view of a television receiver according to a tenth embodiment. - In general, according to one embodiment, an electronic device comprises a housing, a display device, a fan case, a rotor, an opening, and a prevention portion. A first opening and a second opening are formed in the housing. The display device is contained in the housing and comprises a display screen which is exposed through the first opening. The fan case is contained in the housing and comprises a first wall in which a first air inlet is formed, a second wall which faces the first wall and in which a second air inlet is formed, and a side wall which connects the first wall to the second wall. An air outlet from which air to be supplied to the second opening is discharged is formed in the side wall. The rotor comprises a column member, an impeller fixed to the column member, and an abutment portion. The rotor is contained in the fan case between the first wall and the second wall and is configured to rotate about an axis of the column member. The opening is formed in the second wall. At least a portion of the column member is disposed in the opening. The prevention portion is disposed in the fan case. The abutment portion can contact or separate from the prevention portion. The prevention portion is configured to prevent the column member from moving in a direction away from the opening when the abutment portion contacts the prevention portion.
- According to a first embodiment, a notebook-sized mobile
personal computer 1, which functions as an electronic device and as a television receiver, comprises a rectangular and flat firstmain body 2 and a rectangular and flat secondmain body 3 as illustrated inFIG. 1 . The firstmain body 2 and the secondmain body 3 are connected in a relatively rotatable manner via ajoint 4. - In the first
main body 2; adisplay panel 6, which is a display device such as a liquid crystal display (LCD) having atouch panel 5 on the front face (i.e., on adisplay screen 6 a) thereof, and apush button mechanism 7 are arranged in an exposed manner on afront face 2 b that is the external face of ahousing 2 a. Similarly, in the secondmain body 3; adisplay panel 9, which is a display device such as an LCD having atouch panel 8 on the front face (i.e., on adisplay screen 9 a) thereof, and apush button mechanism 10 are arranged in an exposed manner on afront face 3 b that is the external face of ahousing 3 a. Meanwhile, in the first embodiment, for the sake of simplicity; the width direction (horizontal direction) of the secondmain body 3 is defined as the X direction, the apical direction of the secondmain body 3 is defined as the Y direction, and the height direction of the secondmain body 3 is defined as the Z direction. Herein, the X axis, the Y axis, and the Z axis are mutually orthogonal. - In the open state of the mobile
personal computer 1 illustrated inFIG. 1 , thedisplay panel 6 and acover body 7 a of thepush button mechanism 7 as well as thedisplay panel 9 and acover body 10 a of thepush button mechanism 10 lie in an exposed condition. In such open state, the user is able to perform operations. In contrast, in the folded state (not illustrated) of the mobilepersonal computer 1, the front faces 2 b and 3 b face each other from up close in such a way that thedisplay panel 6 and thecover body 7 a of thepush button mechanism 7 are hidden by thehousing 2 a; while thedisplay panel 9 and thecover body 10 a of thepush button mechanism 10 are hidden by thehousing 3 a. In the present embodiment, thetouch panels push button mechanisms display panels - The
joint 4 is a component for joining the firstmain body 2 to the secondmain body 3, and is configured separately from the firstmain body 2 and the secondmain body 3. The joint 4 joins anend portion 2 c at the base end of the firstmain body 2 with anend portion 3 c at the base end of the secondmain body 3. At the central part in the longitudinal direction of anend edge 2 d of theend portion 2 c and at the central part in the longitudinal direction of anend edge 3 d of theend portion 3 c, respectively;rectangular notches rectangular notches notch 2 e and the remaining half thereof is inserted in thenotch 3 e. The joint 4 is set to have a length L that is slightly shorter than the width of thenotches personal computer 1 when the firstmain body 2 and the secondmain body 3 are closed together in the folded state. - The first
main body 2 and the joint 4 are joined in a relatively rotatable manner around a rotation axis Ax1 via afirst hinge mechanism 11A. Similarly, the secondmain body 3 and the joint 4 are joined in a relatively rotatable manner around a rotation axis Ax2 via asecond hinge mechanism 11B. The rotary shafts Ax1 and Ax2 lie parallel to each other. In the present embodiment, thefirst hinge mechanism 11A and thesecond hinge mechanism 11B are coupled together so that the relative rotation angle around the rotation axis Ax1 of the firstmain body 2 with respect to the joint 4 is identical to the relative rotation angle around the rotation axis Ax2 of the secondmain body 3 with respect to thejoint 4. However, the two relative rotation directions with respect to the joint 4 are opposite to each other. Thus, when the user operates the joint 4 for the purpose of opening either one of the firstmain body 2 and the secondmain body 3, the mobilepersonal computer 1 falls into the open state. Similarly, when the joint 4 is operated for the purpose of closing either one of the firstmain body 2 and the secondmain body 3, the mobilepersonal computer 1 falls into the folded state. Moreover, when the user opens the firstmain body 2 and the secondmain body 3, the mobilepersonal computer 1 falls into the open state. Similarly, when the firstmain body 2 and the secondmain body 3 are closed, the mobilepersonal computer 1 falls into the folded state. - Herein, the
display panels housing display panels electronic component 22 or the like that is mounted on asubstrate 23 disposed inside thehousing 3 a of the secondmain body 3. As a result, each of thedisplay panels electronic component 22 is, for example, a central processing unit (CPU). The light that represents the pictures displayed on thedisplay screen 6 a of thedisplay panels 6 and on thedisplay screen 9 a of thedisplay panel 9 is output anteriorly through thetouch panels personal computer 1 are a picture signal processing circuit, a tuner, an HDMI signal processing module (HDMI stands for high-definition multimedia interface), an audio-video (AV) input terminal, a remote-control signal receiving module, a control module, a selector, an onscreen display interface, a memory module (such as a read only memory (ROM), a random access memory (RAM), or a hard disk drive (HDD)), an audio signal processing circuit, an interface circuit, and various controllers (no control circuit is illustrated). Meanwhile, the mobilepersonal computer 1 also comprises built-in speakers (not illustrated) for the purpose of audio output. - As illustrated in
FIGS. 2 and 3 , thehousing 3 a of the secondmain body 3 comprises amask 20 and a case 21 constituting the outer housing. Herein, themask 20 and the case 21 constituting the outer housing are integratedly coupled by screwing, engagement, or fitting; and form the outline of thehousing 3 a. Thehousing 3 a houses thedisplay panel 9 that comprises thedisplay screen 9 a exposed on the front side, and also houses thesubstrate 23 that is fixed to the case 21 via an inner plate. On themask 20 is formed afirst opening 20 a, through which is exposed thedisplay screen 9 a of thedisplay panel 9. If put in another way, thefirst opening 20 a serves as an LCD opening. - On the case 21,
air inlets 3j are formed at arear end 21 b at the base end side of abottom wall 21 a. In the first embodiment, theair inlets 3 j represent a collection of a plurality of (a number of) small holes formed through thebottom wall 21 a. Moreover, theair inlets 3 j (i.e., the region having small holes formed thereon) are formed over a comparatively elongated region along anend edge 21 c. On the case 21 is also formed anair outlet 3 h as a second opening. Inside thehousing 3 a, a ventilation flue is installed from theair inlets 3 j up to theair outlet 3 h. Midway in the ventilation flue is installed afan 50, the explanation of which is given later. The air taken in from theair inlets 3 j due to thefan 50 is then thrown out from theair outlet 3 h. As a result, components such as theelectronic component 22 mounted on thesubstrate 23 get cooled. - Moreover, in the case 21 is disposed an engaging
member 3 m at a position close to thefan 50 and theair inlets 3 j. The engagingmember 3 m is, for example, a claw (claw of latch mechanism) for enabling engagement and disengagement between the firstmain body 2 and the secondmain body 3. The engagingmember 3 m itself can engage with or disengage from the firstmain body 2. - In the first embodiment, as illustrated in
FIG. 2 , thefan 50 is disposed inside thehousing 3 a of the secondmain body 3. Thefan 50 performs ventilation inside thehousing 3 a so that the components such as theelectronic component 22 mounted on thesubstrate 23 get cooled. - As illustrated in
FIGS. 4 to 6 , thefan 50 comprises afan case 51, arotor 52, abearing 53, and amotor 54. In the first embodiment, thefan 50 is assumed to be a centrifugal fan. Moreover, for the sake of convenience, gaps between the components are illustrated in an enlarged manner inFIG. 6 . - The
fan case 51 comprises afirst wall 51 a and asecond wall 51 b that form a pair of opposite walls, and comprises aside wall 51 c that joins thefirst wall 51 a to thesecond wall 51 b. If put in another way, thefan case 51 serves as a casing or a housing. Thefan case 51 is disposed in the thickness direction of thehousing 3 a in such a manner that at least some portion of thefan case 51 overlaps with thedisplay panel 9. - In the
first wall 51 a is formed afirst air inlet 51 d and in thesecond wall 51 b are formed a plurality ofsecond air inlets 51 e. In contrast, in theside wall 51 c is formed aair outlet 51 f. In the central part of thesecond wall 51 b is formed an island-shaped mountedwall 51 h. Meanwhile, each of thesecond air inlets 51 e is formed between a pair ofadjacent spokes 51 g. Moreover, thefirst air inlet 51 d, which is formed on thefirst wall 51 a, is positioned opposite to anabutment portion 58 described later. - The
first wall 51 a is made of, for example, metal That makes it possible to make thefirst wall 51 a comparatively thinner. Herein, thefirst wall 51 a represents a top panel. Thesecond wall 51 b and theside wall 51 c are integratedly formed using resin. On theside wall 51 c, thefirst wall 51 a is detachably locked with a locking mechanism such as a claw 51 k. Thefirst wall 51 a does not have thebearing 53 disposed thereon. Thesecond wall 51 b represents a bottom wall. - Thus, as described above, the
fan case 51 is housed inside thehousing 3 a, and comprises thefirst wall 51 a in which is formed thefirst air inlet 51 d; comprises thesecond wall 51 b in which are formed thesecond air inlets 51 e and which lies opposite to thefirst wall 51 a; and comprises theside wall 51 c in which is formed theair outlet 51 f serving as a second opening. The air to be supplied to theair outlet 3 h or the air reaching theair outlet 3 h is discharged from theair outlet 51 f. Theside wall 51 c joins thefirst wall 51 a to thesecond wall 51 b. - As illustrated in
FIG. 6 , therotor 52 comprises aimpeller 61 and arotary shaft 62. Therotor 52 is housed in thefan case 51 and rotates about the axis of therotary shaft 62. If put in another way, therotor 52 rotates about the axis of therotary shaft 62 as the rotating shaft (shaft). Therotary shaft 62 is elongated along the direction in which thefirst wall 51 a and thesecond wall 51 b face each other. In the first embodiment, therotary shaft 62 represents a column member, while therotor 52 represents a rotary member. - The
impeller 61 comprises abase 61 a to which is fixed one end of therotary shaft 62 and comprises a plurality ofblades 61 c extending from aperiphery 61 b of the base 61 a. Theimpeller 61 is made of resin or metal. The base 61 a is cuplike in shape and comprises an opening facing toward thesecond wall 51 b. More specifically, the base 61 a comprises abase wall 61 f that is disc-like in shape and comprises aside wall 61 g extending from the peripheral border of thebase wall 61 f toward thesecond wall 51 b. The outer periphery of theside wall 61 g serves as theperiphery 61 b of the base 61 a. On the inner surface of thebase wall 61 f is formed a concaveshaft fastening member 61 h in which one end of therotary shaft 62 is inserted and fastened. - As illustrated in
FIGS. 6 and 7 , on the outer periphery of theimpeller 61 is formed an annular joiningmember 61 d, which joins the outer borders of theblades 61 c facing thefirst wall 51 a. Of the joiningmember 61 d, anend 61 e on the side of thefirst wall 51 a is formed to have a bent shape. More specifically, starting from the inner peripheral region toward the outer peripheral region, theend 61 e is formed to bend (tilt) away from thefirst wall 51 a. - The
bearing 53 is disposed in thefan case 51 for the purpose of supporting therotary shaft 62 in a rotatable manner. Thebearing 53 is cylindrical in shape and is configured as, for example, a fluid dynamic bearing or an oil retaining bearing. Alternatively, the bearing 53 can also be configured as a ball bearing. Thebearing 53 is fit in anopening 51 p that is formed on the inside of acylindrical member 51 i, which is erected on the inner surface of thesecond wall 51 b. As a result, thebearing 53 gets fixed to thesecond wall 51 b. On that portion on the inner surface of thesecond wall 51 b which serves as the base of thecylindrical member 51 i, athrust plate 55 is fixed that supports the other end face of therotary shaft 62 along the axial direction thereof. Theopening 51 p in which thebearing 53 is fit is formed on thesecond wall 51 b. In theopening 51 p is housed at least a part of therotor 52 representing a column member. Thebearing 53 represents a support that houses at least a part of therotor 52, which is a rotating member, and that supports therotor 52 in a rotatable manner. - As illustrated in
FIG. 6 , themotor 54 comprises astator 54 a, arotor 54 b that surrounds thestator 54 a, and acircuit board 54 c. Thestator 54 a further comprises aniron core 54 e equipped with a windingwire 54 d. Therotor 54 b further comprises acylindrical yoke 54 f and a plurality ofmagnets 54 g that are fixed spaced apart from each other on the inner periphery and along the circumferential direction of theyoke 54 f. Meanwhile, theyoke 54 f is fixed on the inner periphery of theside wall 61 g of the base 61 a. To thecircuit board 54 c is connected an electrically-conductive lead 56. Thus, thecircuit board 54 c receives electrical power from the electrically-conductive lead 56 and transmits that electrical power to the windingwire 54 d. In themotor 54, due to the electromagnetic action between themagnets 54 g and thestator 54 a facing themagnets 54 g, therotor 54 b rotates thereby causing therotor 52 to rotate. - In the
fan 50 is formed amovement restriction mechanism 57 that restricts therotor 52 from moving in the direction away from thebearing 53. Themovement restriction mechanism 57 comprises theabutment portion 58 that is formed in therotor 52 and aprevention member 59 that is formed in thefan case 51. - The
abutment portion 58 is formed on the base 61 a. More specifically, the outer surface at the central portion of thebase wall 61 f of the base 61 a constitutes theabutment portion 58. - The
prevention member 59 is formed on the outside of thebearing 53, and comprises aprojection 59 a and asupport member 59 b. Theprevention member 59 is fixed to anouter surface 51 j of thefirst wall 51 a of thefan case 51. Thesupport member 59 b is rod-like in shape and is disposed across thefirst air inlet 51 d. Moreover, the both ends of thesupport member 59 b are fixed to theouter surface 51 j of thefirst wall 51 a by means of, for example, adhesion or screwing. Thus, thesupport member 59 b is disposed on theouter surface 51 j of thefirst wall 51 a and comprises theprojection 59 a fixed thereto in an integrated manner. Theprojection 59 a protrudes from thesupport member 59 b toward theabutment portion 58, and is inserted in thefirst air inlet 51 d and lies inside thefan case 51. Theprojection 59 a can come into and out of contact with theabutment portion 58. Theabutment portion 58 can contact or separate from theprojection 59 a. Between theprojection 59 a and theabutment portion 58 exists a clearance of a predetermined distance L1, which is shorter than a minimum distance L2 between thefirst wall 51 a of thefan case 51 and therotor 52 in the state when the predetermined distance L1 is secured. In such a configuration, it is possible to reduce the rotational resistance of therotor 52. In the present embodiment, theprevention member 59 is formed on thefan case 51 and can come into and out of contact with theabutment portion 58. By abutment against theabutment portion 58, theprevention member 59 functions as a restricting member and prevents therotary shaft 62, which represents a column member, from moving away from theopening 51 p. Moreover, theprevention member 59 is formed on the inner surface of thehousing 3 a that covers the side opposite to thedisplay screen 9 a of thedisplay panel 9. Hence, theprevention member 59 restricts therotor 52 from moving in the opposite direction of thedisplay panel 9. Furthermore, theprevention member 59 is formed in the outside of thebearing 53, which represents a support portion, and when theprevention member 59 contacts the rotor 52 (the abutment portion 58), theprevention member 59 prevents therotor 52 from moving away from thebearing 53. - Usually, due to the force of attraction (magnetic force) between the
magnets 54 g and thestator 54 a, therotor 52 is able to either rotate or stop rotating while maintaining the restriction distance L1 between theprojection 59 a and theabutment portion 58. However, if thefan 50 gets subjected to a shock, then there are times when therotor 52 resists such force of attraction and moves in the direction away from thebearing 53. With regard to that issue, theabutment portion 58 formed on therotor 52 comes into contact with theprevention member 59 formed in thefan case 51. As a result, theprevention member 59 restricts therotor 52 from moving in the direction away from thebearing 53. If put in another way, by abutment against theabutment portion 58, theprevention member 59 restricts therotary shaft 62, which represents a column member, from moving away from theopening 51 p. Theprevention member 59 prevents therotary shaft 62 from moving in the direction away from theopening 51 p when theabutment portion 58 contacts theprevention member 59. Once the impact of the shock disappears, then therotor 52 returns to the position of maintaining the restriction distance L1 between theprojection 59 a and theabutment portion 58. In this way, in the first embodiment, therotor 52 is restricted from moving along the axial direction. Meanwhile, in the first embodiment, since the engagingmember 3 m is disposed at a position close to thefan 50, the vibrations generated due to the movement of the engagingmember 3 m easily reach thefan 50. Moreover, if a component such as a memory is installed near thefan 50, then the vibrations generated due to such installation also easily reach thefan 50. - As explained above, in the first embodiment, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. That makes it possible to prevent theimpeller 61 of therotor 52 from making contact with thefirst wall 51 a of thefan case 51. As a result, even in case thefan 50 gets subjected to a shock, theimpeller 61 can successfully keep on rotating. That prevents a decline in the air blowing capacity of thefan 50. - Moreover, in the first embodiment, the
prevention member 59 is disposed on the outside of thebearing 53. Hence, as compared to the case when theprevention member 59 is disposed on the inside of thebearing 53, it becomes possible to simplify the configuration as well as simplify the manufacturing process. Besides, the reliability of thebearing 53 also remains intact. - Moreover, since the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53, it also becomes possible to prevent therotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with thefan case 51. That helps in preventing the noise from occurring. - Furthermore, in the first embodiment, the
end 61 e of the joiningmember 61 d that lies on the side of thefirst wall 51 a is formed to have a bent shape. Hence, even in case therotor 52 tilts and makes contacts with thefan case 51, it becomes possible to prevent therotor 52 from getting hung up on thefan case 51. That in turn makes it possible to prevent therotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with thefan case 51. Besides, if a lubricant agent is applied to the area at which theimpeller 61 may come into contact with thefirst wall 51 a, it becomes possible to prevent theimpeller 61 from getting hung up on thefirst wall 51 a. As the lubricating agent, it is possible to use, for example, wax. - Explained below is a first modification example of the first embodiment. As illustrated in
FIG. 8 , in thefan 50 according to the first modification example; theabutment portion 58, which constitutes themovement restriction mechanism 57 and which is formed in therotor 52, is formed to be a projection. Herein, theabutment portion 58 protrudes toward theprevention member 59. Meanwhile, unlike the abovementioned configuration, theprevention member 59 constituting themovement restriction mechanism 57 does not comprise theprojection 59 a. Besides, theabutment portion 58 can come into and out of contact with onesurface 59 c of thesupport member 59 b of theprevention member 59. In such a configuration, theprevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - Explained below is a second modification example of the first embodiment. As illustrated in
FIG. 9 , unlike the abovementioned configuration, thefan 50 according to the second modification example does not comprise the joiningmember 61 d. Besides, anend 611 of eachblade 61 c facing thefirst wall 51 a has a bent shape. In such a configuration, even in case therotor 52 tilts and makes contacts with thefan case 51, it becomes possible to prevent therotor 52 from getting hung up on thefan case 51. - In a second embodiment, the
movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment. As illustrated inFIG. 10 , theprevention member 59 of themovement restriction mechanism 57 is formed inside thefan case 51. Herein, in an identical manner to the first embodiment, thefan case 51 comprises thesecond wall 51 b serving as the wall on which thebearing 53 is disposed. - As illustrated in
FIG. 11 , theabutment portion 58 of themovement restriction mechanism 57 protrudes from aperiphery 62 a of therotary shaft 62. Herein, theabutment portion 58 is formed to be annular in shape and gets fit in a ring-like groove 62 b that is formed on theperiphery 62 a of therotary shaft 62. The portion of theabutment portion 58 that protrudes from theperiphery 62 a of therotary shaft 62 is annular in shape. - The
prevention member 59 of themovement restriction mechanism 57 is formed on thesecond wall 51 b. More specifically, theprevention member 59 is fixed to thesecond wall 51 b using thecylindrical member 51 i. Moreover, theprevention member 59 is formed to be annular in shape and is fixed to aninner periphery 51 m of thecylindrical member 51 i. Theprevention member 59 is positioned opposite to theabutment portion 58 and can come into and out of contact with theabutment portion 58. Moreover, in theprevention member 59, anannular member 63 is disposed on the side of thesecond wall 51 b in such a way that theabutment portion 58 is positioned between theprevention member 59 and theannular member 63. - In such a configuration, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - Moreover, in the second embodiment, the
abutment portion 58 restricts the movement of oil that flows out of thebearing 53. That makes it possible to prevent the spread of oil to the outside of thefan case 51. - Explained below are modification examples of the second embodiment.
- As illustrated in
FIG. 12 , in themovement restriction mechanism 57 according to a first modification example, theprevention member 59 is rod-like (salient-like) in shape and is fixed on theinner periphery 51 m of thecylindrical member 51 i. - As illustrated in
FIG. 13 , in themovement restriction mechanism 57 according to a second modification example, theabutment portion 58 is formed in an integrated manner with therotary shaft 62. Theabutment portion 58 is annular in shape and protrudes from theperiphery 62 a of therotary shaft 62. Theprevention member 59 comprises the same configuration to the configuration according to the first modification example. In such configurations too, theprevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - As illustrated in
FIG. 14 , in themovement restriction mechanism 57 according to a third modification example, theabutment portion 58 is rod-like in shape and protrudes from theperiphery 62 a of therotary shaft 62. Consequently, the protruding portion of theabutment portion 58 that protrudes from theperiphery 62 a of therotary shaft 62 is salient-like in shape. Herein, theabutment portion 58 is fit into ahole 62 c that is formed on therotary shaft 62. - As illustrated in
FIG. 15 , in themovement restriction mechanism 57 according to a fourth modification example, theabutment portion 58 is formed in an integrated manner with therotary shaft 62. Theabutment portion 58 is rod-like in shape and protrudes from theperiphery 62 a of therotary shaft 62. Consequently, the protruding portion of theabutment portion 58 that protrudes from theperiphery 62 a of therotary shaft 62 is salient-like in shape. - As illustrated in
FIG. 16 , in themovement restriction mechanism 57 according to a fifth modification example, theabutment portion 58 is rod-like (shaft-like) in shape and protrudes on both sides from theperiphery 62 a of therotary shaft 62. Consequently, the protruding portions of theabutment portion 58 that protrude from theperiphery 62 a of therotary shaft 62 are salient-like in shape. Herein, theabutment portion 58 is fit into ahole 62 d that is formed on therotary shaft 62. - In each of the abovementioned modification examples, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - In a third embodiment, the
movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment. As illustrated inFIG. 17 , theprevention member 59 of themovement restriction mechanism 57 is a projection that protrudes toward thefan 50 from aninner plate 3 g, which constitutes thehousing 3 a of the secondmain body 3. Meanwhile, theabutment portion 58 comprises the same configuration as the configuration according to the first embodiment and is formed in therotor 52. - In such a configuration too, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - Explained below is a modification example of the third embodiment. As illustrated in
FIG. 18 , in thefan 50 according to the modification example; theabutment portion 58, which constitutes themovement restriction mechanism 57 and which is formed in therotor 52, is formed to be a projection. Herein, theabutment portion 58 protrudes toward theprevention member 59. Meanwhile, theprevention member 59 constituting themovement restriction mechanism 57 is flat-like in shape. Besides, theabutment portion 58 can come into and out of contact with theprevention member 59. In such a configuration, theprevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - In a fourth embodiment, as illustrated in
FIG. 19 , the configuration differs from the first embodiment in the point that thehousing 3 a comprises abent portion 3 n along which thefan 50 is bent. - In the
fan case 51, thefirst wall 51 a comprises abent portion 510 that is bent along thebent portion 3 n. Herein, thefirst wall 51 a of thefan case 51 forms a concave shape (valley-like shape) along thebent portion 3 n. Similarly, in thefan case 51, thesecond wall 51 b comprises abent portion 51 n that is bent along thebent portion 3 n. Moreover, eachblade 61 c comprises abent portion 61 m that is bent along thebent portion 3 n. - In such a configuration, since the
fan 50 is bent along thebent portion 3 n, it can be ensured that thefan 50 has sufficient air blowing capacity. - Besides, since the
first wall 51 a of the fan case has a concave shape (valley-like shape), it becomes possible to prevent a contact between therotor 52 and thefirst wall 51 a even if therotor 52 tilts. - In a fifth embodiment, as illustrated in
FIG. 20 , the configuration differs from the first embodiment in the point that thefirst wall 51 a of thefan case 51 in thefan 50 has a projection-like shape (mountain-like shape). More particularly, thefirst wall 51 a has such a projection-like shape in which, starting from the ends toward the central part, thefirst wall 51 a goes on moving away from thesecond wall 51 b. - In such a configuration, even in case the
rotor 52 tilts and makes contacts with thefirst wall 51 a, the area of contact is limited to a comparatively small contact point thereby making it possible to prevent therotor 52 from getting hung up on thefan case 51. That in turn makes it possible to prevent therotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with thefan case 51. - In a sixth embodiment, the
movement restriction mechanism 57 comprises a different configuration than the configuration according to the first embodiment. As illustrated inFIG. 21 , theprevention member 59 of themovement restriction mechanism 57 is formed inside thefan case 51. Herein, in an identical manner to the first embodiment, thefan case 51 comprises thesecond wall 51 b serving as the wall on which thebearing 53 is disposed. - The
abutment portion 58 of themovement restriction mechanism 57 is formed in one of theblades 61 c. Herein, theabutment portion 58 is formed as a substantially L-shaped locking toggle in which afirst portion 58 d and asecond portion 58 e, which extends toward therotary shaft 62, form a substantially right angle. - The
prevention member 59 of themovement restriction mechanism 57 is formed on thesecond wall 51 b. Herein, theprevention member 59 is formed to be annular in shape and surrounds thecylindrical member 51 i. Moreover, theprevention member 59 comprises a cylindricalfirst portion 59 d and an annular flangedsecond portion 59 e that is formed on the outer periphery of the cylindricalfirst portion 59 d. Thesecond portion 58 e of theabutment portion 58 can come into and out of contact with thesecond portion 59 e of theprevention member 59. - In such a configuration, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - Explained below is a modification example of the sixth embodiment. In the modification example, as illustrated in
FIG. 22 , thesecond portion 58 e of theabutment portion 58 extends from thefirst portion 58 d in the direction going away from therotary shaft 62. Thesecond portion 59 e of theprevention member 59 is formed on the inner periphery of thefirst portion 59 d. - In such a configuration too, the
prevention member 59 abuts against theabutment portion 58 so as to restrict therotor 52 from moving in the direction away from thebearing 53. - In a seventh embodiment, as illustrated in
FIG. 23 , the configuration differs from the first embodiment in the point that a salient-likesecond abutment portion 71 is formed on therotor 52 and an annular-projection-likethird abutment portion 72 is formed in thefan case 51. Thesecond abutment portion 71 and thethird abutment portion 72 are made of, for example, resin. - The
second abutment portion 71 protrudes from the joiningmember 61 d. That is, thesecond abutment portion 71 is formed on the outer peripheral region of therotor 52. Meanwhile, thethird abutment portion 72 protrudes from the inner surface of thefirst wall 51 a. Thesecond abutment portion 71 and thethird abutment portion 72 are spaced apart opposite to each other. The distance between thesecond abutment portion 71 and thethird abutment portion 72 is equal to the minimum distance L2, which is the also the distance between thefirst wall 51 a of thefan case 51 and therotor 52. Meanwhile, alternatively, thesecond abutment portion 71 can be formed in thefan case 51, while thethird abutment portion 72 can be formed on therotor 52. - In such a configuration, even in case the
rotor 52 tilts thereby causing a contact between thesecond abutment portion 71 and thethird abutment portion 72, the area of contact is limited to a comparatively small contact point thereby making it possible to prevent therotor 52 from getting hung up on thefan case 51. That in turn makes it possible to prevent therotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with thefan case 51. - Explained below is a modification example of the seventh embodiment. As illustrated in
FIG. 24 , in the modification example, thesecond abutment portion 71 is formed in the base 61 a and thethird abutment portion 72 is formed on thefirst wall 51 a of thefan case 51 at a position opposite to thesecond abutment portion 71. Alternatively, thesecond abutment portion 71 can be formed in thefan case 51 and thethird abutment portion 72 can be formed on therotor 52. - In such a configuration too, even in case the
rotor 52 tilts thereby causing a contact between thesecond abutment portion 71 and thethird abutment portion 72, the area of contact is limited to a comparatively small contact point thereby making it possible to prevent therotor 52 from getting hung up on thefan case 51. That in turn makes it possible to prevent therotor 52 from getting positionally-fixed (locked) while making contact in a tilted manner with thefan case 51. - In an eighth embodiment, as illustrated in
FIG. 25 , the configuration differs from the first embodiment in the point that the mobilepersonal computer 1 is a slate-type mobile personal computer. Basically, the mobilepersonal computer 1 according to the eighth embodiment comprises the same configuration as the configuration of the secondmain body 3 according to the first embodiment. More particularly, the mobilepersonal computer 1 comprises aflat housing 100; adisplay panel 102, which is a display device such as an LCD having atouch panel 101 on the front face thereof; thefan 50 housed in thehousing 100; thesubstrate 23; and theelectronic component 22 mounted on thesubstrate 23. In thehousing 100 are formed theair inlets 3 j and theair outlet 3 h. Moreover, inside thehousing 100, a ventilation flue is installed starting from theair inlets 3 j to theair outlet 3 h. Midway in the ventilation flue is installed thefan 50. Besides, on thehousing 100 is formed afirst opening 100 a, through which is exposed adisplay screen 102 a of thedisplay panel 102. - In such a configuration, the
fan 50 is identical to that described in the first embodiment. Hence, in an identical manner to the first embodiment, even in case thefan 50 gets subjected to a shock, theimpeller 61 can successfully keep on rotating. That prevents a decline in the air blowing capacity of thefan 50. Meanwhile, thefan 50 need not be identical to that described only in the first embodiment. That is, it is also possible to implement thefan 50 according to the other embodiments or modification examples described above. - Herein, although it is described with reference to the abovementioned embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the basic teaching herein set forth. For example, the embodiments are explained with reference to a notebook-sized mobile personal computer having two display screens or a slate-type mobile personal computer having a single display screen. However, alternatively, the embodiments are also applicable to other electronic devices or television receivers comprising a fan. For example, the embodiments are also applicable to notebook-sized personal computers or desktop computers having a keyboard, personal digital assistants (PDAs), smartbooks, smartphones, or cellular phones. Therein,
FIG. 26 is an illustration diagram of a notebook-sizedpersonal computer 200 having a keyboard 201 (according to a ninth embodiment), andFIG. 27 is an illustration diagram of a television receiver 300 (according to a tenth embodiment). - In this way, according to an aspect of the embodiments, it is possible to prevent a decline in the air blowing capacity of a fan.
- Moreover, the various modules of the systems described herein can be implemented as software applications, hardware and/or software modules, or components on one or more computers, such as servers. While the various modules are illustrated separately, they may share some or all of the same underlying logic or code.
- While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel embodiments described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the embodiments described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.
Claims (9)
1. An electronic device comprising:
a housing comprising a first opening and a second opening;
a display device in the housing, the display device comprising a display screen exposed through the first opening;
a fan case in the housing, the fan case comprising a first wall comprising a first air inlet, a second wall facing the first wall and comprising a second air inlet, and a side wall connecting the first wall to the second wall and comprising an air outlet from which air supplied to the second opening is discharged;
a rotor in the fan case between the first wall and the second wall and configured to rotate about an axis of a column member, the rotor comprising the column member, an impeller fixed to the column member, and an abutment portion;
an opening in the second wall and in which at least a portion of the column member is disposed; and
a prevention portion in the fan case and configured to contact or separate from the abutment portion, the prevention portion configured to prevent the column member from moving in a direction away from the opening when the abutment portion contacts the prevention portion.
2. The electronic device of claim 1 , wherein the fan case is configured so that at least a portion of the fan case overlaps the display device.
3. The electronic device of claim 2 , wherein the prevention portion is configured on an inner surface of the housing that covers a side opposite to the display screen of the display device and is configured to prevent the rotor from moving in a direction opposite to the display device.
4. A fan comprising:
a fan case comprising a first wall comprising a first air inlet, a second wall facing the first wall and comprising a second air inlet, and a side wall connecting the first wall to the second wall and comprising an air outlet;
a rotor in the fan case between the first wall and the second wall and configured to rotate about a shaft, the rotor comprising the shaft, an impeller fixed to the shaft, and an abutment portion;
a bearing in the second wall and configured to support the shaft; and
a prevention portion in the fan case and configured to contact or separate from the abutment portion, the prevention portion configured to prevent the rotor from moving in a direction away from the bearing when the abutment portion contacts the prevention portion.
5. The fan of claim 4 , wherein
the impeller comprises a base and a plurality of blades extending from a periphery of the base,
the base is fixed to one end of the shaft,
the abutment portion is disposed in the base, and
the prevention portion is disposed in the first wall.
6. The fan of claim 4 , wherein the prevention portion comprises a projection configured to contact the abutment portion and a support portion, the support portion is disposed on the outer surface of the first wall and fixed to the projection.
7. The fan of claim 4 , wherein the prevention portion is inside the fan case.
8. The fan of claim 4 , wherein
the abutment portion is on the shaft and configured to protrude from a periphery of the shaft, and
the prevention portion is on the second wall.
9. An electronic device comprising:
a fan comprising a fan case, a rotor, and a support member, the support member configured to contain at least a portion of the rotor and rotatably support the rotor; and
a prevention portion on an outside of the support member and configured to prevent the rotor from separating from the support member when the prevention portion contacts the rotor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011080266A JP5330446B2 (en) | 2011-03-31 | 2011-03-31 | Electronics and fans |
JP2011-080266 | 2011-03-31 |
Publications (1)
Publication Number | Publication Date |
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US20120247739A1 true US20120247739A1 (en) | 2012-10-04 |
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ID=46925712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/398,489 Abandoned US20120247739A1 (en) | 2011-03-31 | 2012-02-16 | Electronic device and fan |
Country Status (2)
Country | Link |
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US (1) | US20120247739A1 (en) |
JP (1) | JP5330446B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150030437A1 (en) * | 2013-07-25 | 2015-01-29 | Wistron Corporation | Fan Device and Electronic Device Thereof |
US20190301485A1 (en) * | 2018-03-28 | 2019-10-03 | Asustek Computer Inc. | Fan module and electronic device |
CN110632992A (en) * | 2018-06-21 | 2019-12-31 | 株式会社东芝 | Fastener and electronic equipment |
US10677258B2 (en) * | 2017-01-19 | 2020-06-09 | Nidec Corporation | Blower comprising impeller and motor |
US20200352052A1 (en) * | 2020-06-26 | 2020-11-05 | Intel Corporation | Fan support |
US20210330146A1 (en) * | 2020-04-27 | 2021-10-28 | Samsung Electronics Co., Ltd. | Motor assembly and a cleaner comprising the same |
US11665852B2 (en) * | 2021-09-10 | 2023-05-30 | Dell Products L.P. | Information handling system fan having a concave housing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5089035A (en) * | 1989-01-31 | 1992-02-18 | Esute Chemical Corporation | Dehumidifier |
US20070131383A1 (en) * | 2005-12-13 | 2007-06-14 | Fujitsu Limited | Electronic apparatus including removable dust catcher |
US20090290307A1 (en) * | 2008-05-23 | 2009-11-26 | Furui Precise Component (Kunshan) Co., Ltd. | Centrifugal blower and electronic device incorporating the same |
US20090303200A1 (en) * | 2008-06-10 | 2009-12-10 | Sony Europe (Belgium) Nv | Sensor-based display of virtual keyboard image and associated methodology |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0377091U (en) * | 1989-11-30 | 1991-08-01 | ||
KR100192668B1 (en) * | 1996-05-29 | 1999-06-15 | 이형도 | Controlling device of rotating axis of spindal motor using bearing of dynamic pressure fluid |
JP2005282500A (en) * | 2004-03-30 | 2005-10-13 | Toshiba Corp | Fluid pump, cooling device and electric apparatus |
JP2005315158A (en) * | 2004-04-28 | 2005-11-10 | Toshiba Corp | Pump, cooling system and electronic equipment |
JP2006188967A (en) * | 2004-12-28 | 2006-07-20 | Nippon Densan Corp | Small centrifugal fan |
JP2007149007A (en) * | 2005-11-30 | 2007-06-14 | Toshiba Corp | Electronic apparatus |
JP2007247495A (en) * | 2006-03-15 | 2007-09-27 | Matsushita Electric Ind Co Ltd | Centrifugal fan device and electronics provided therewith |
-
2011
- 2011-03-31 JP JP2011080266A patent/JP5330446B2/en active Active
-
2012
- 2012-02-16 US US13/398,489 patent/US20120247739A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5089035A (en) * | 1989-01-31 | 1992-02-18 | Esute Chemical Corporation | Dehumidifier |
US20070131383A1 (en) * | 2005-12-13 | 2007-06-14 | Fujitsu Limited | Electronic apparatus including removable dust catcher |
US20090290307A1 (en) * | 2008-05-23 | 2009-11-26 | Furui Precise Component (Kunshan) Co., Ltd. | Centrifugal blower and electronic device incorporating the same |
US20090303200A1 (en) * | 2008-06-10 | 2009-12-10 | Sony Europe (Belgium) Nv | Sensor-based display of virtual keyboard image and associated methodology |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150030437A1 (en) * | 2013-07-25 | 2015-01-29 | Wistron Corporation | Fan Device and Electronic Device Thereof |
US10677258B2 (en) * | 2017-01-19 | 2020-06-09 | Nidec Corporation | Blower comprising impeller and motor |
US20190301485A1 (en) * | 2018-03-28 | 2019-10-03 | Asustek Computer Inc. | Fan module and electronic device |
US10927848B2 (en) * | 2018-03-28 | 2021-02-23 | Asustek Computer Inc. | Fan module and electronic device |
CN110632992A (en) * | 2018-06-21 | 2019-12-31 | 株式会社东芝 | Fastener and electronic equipment |
US20210330146A1 (en) * | 2020-04-27 | 2021-10-28 | Samsung Electronics Co., Ltd. | Motor assembly and a cleaner comprising the same |
US20200352052A1 (en) * | 2020-06-26 | 2020-11-05 | Intel Corporation | Fan support |
US11903161B2 (en) * | 2020-06-26 | 2024-02-13 | Intel Corporation | Fan support |
US11665852B2 (en) * | 2021-09-10 | 2023-05-30 | Dell Products L.P. | Information handling system fan having a concave housing |
Also Published As
Publication number | Publication date |
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JP5330446B2 (en) | 2013-10-30 |
JP2012216645A (en) | 2012-11-08 |
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