JP2001274298A - Fan device and heat sink equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan device which can have its fan housing tightly mounted and easily demounted with simple constitution even in the case of slight size errors at the time of manufacturing and assembly and a heat sink equipped with the fan device. SOLUTION: On the fan housing 22 mounted detachably on the heat sink 12, a fan main body 21 is supported which blows air to the heat sink 12; and U-shaped engagement pieces 26a and 26b which droop down are formed at the right end part of the fan housing 22 and plate type engagement pieces 32a and 32b which droop down are formed at the left end part. At side wall parts 14a and 14b on the side of the heat sink 12, engaged parts 15a and 15b are formed which detachably engage the U-shaped and plate type engagement pieces 26a and 26b, and 32a and 32b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan device for cooling a heating element such as a semiconductor element and a heat sink provided with the same.

[0002]

2. Description of the Related Art Generally, in personal computers,
In order to prevent a malfunction or a decrease in performance due to a rise in temperature due to heat generated by a CPU (Central Processing Unit), cooling means is used to forcibly cool the CPU. As a cooling means of this kind, a cooling fan is mainly used, a fan housing supporting a fan body is attached to a heat sink, and the heat sink is brought into contact with the CPU, and the heat sink is cooled by blowing air from the fan, thereby cooling the CPU. To promote heat dissipation.

[0003] As a method of fixing such a fan housing to a heat sink, conventionally, fixing by a screw, fixing by a clip as described in JP-A-7-212829, JP-A-10-303585 or JP-A-Hei. Various methods have been proposed, such as fixing by special locking means as described in JP-A-8-88733.

As shown in FIG. 8, for example, as shown in FIG. 8, a fan unit 2 is formed by supporting a fan body 2 at a central portion of a rectangular fan housing 1 formed by molding a resin. The fan housing 1 can be detachably attached to a rectangular heat sink 4 having a plurality of heat dissipating fins 3 formed on the upper surface by extrusion.

More specifically, as shown in FIG. 8, a plurality of (here, two) locking pieces 5a, 5
b are integrally formed, and locking claws 6a, 6b are formed at the tips (lower ends) of both locking pieces 5a, 5b.
6b is adapted to be removably locked to locked portions 7a, 7b formed on both left and right sides of the heat sink 4, and these locking pieces 5a, 5b, both locking claws 6a, 6b. A locking means is constituted by the locked portions 7a and 7b. Note that the fan housing 1 and the heat sink 4
In an independent state (a state in which they are not attached to each other), as shown in FIG.
The dimensional relationship is such that the inner diameters of a and 7b are located inward.

At this time, when the fan housing 1 is aligned with the heat sink 4 in the direction of arrow Y in FIG. 8, the locking claws 6a, 6b abut the locked portions 7a, 7b, and when further moved, Since the root portions (upper end portions) of the locking pieces 5a and 5b have a bend, the distal ends (lower ends) of the locking pieces 5a and 5b are moved by the elastic force to the locked portions 7a and 7b.
Deflected inside. Further, when the fan housing 1 moves and the locking claws 6a, 6b pass the tips of the locked portions 7a, 7b, the locking claws 6a, 6b are restored, and are respectively urged outward. For this reason, both locking claws 6a, 6b elastically press both locked portions 7a, 7b, thereby causing both locked portions 7a, 7b.
b. In addition, since the locking claws 6a, 6b and the protrusions at the tips of the locked portions 7a, 7b are caught, even if the fan housing 1 and the heat sink 4 are displaced vertically so as to be separated from each other, the locked state is maintained. Is not canceled.

Therefore, when the fan housing 1 is mounted, the locked state between the locking claws 6a, 6b and the locked portions 7a, 7b does not easily come off. On the other hand, to remove the fan housing 1 from the heat sink 4, the lower ends of the locking pieces 5a and 5b are pushed inward against the urging force, so that the locking claws 6a and 6b are locked. The locked state is released by disengaging from the portions 7a and 7b, and the fan housing 1 can be removed.

[0008]

However, in the case of the above-mentioned conventional locking means, it is necessary to have a bend, as described above, for each of the locking pieces 5a, 5b at one of the root portions (upper end portions). Because of the location, for example, due to an error in molding the resin of the fan housing 1, the locking pieces 5a and 5b may be formed to be inclined more inward than usual (5a1, 5b1 in FIG. 8). When such a fan housing 1 is mounted on a heat sink 4, both locking pieces 5
a, the elastic force to the outside of the tip (lower end) of 5b becomes weaker,
The locking claws 6a, 6b cannot be firmly locked to the locked portions 7a, 7b, and there is a possibility that rattling occurs between the fan housing 1 and the heat sink 4.

In order to prevent such rattling beforehand, it is anticipated that both locking pieces 5a and 5b will be inclined more inwardly than usual during resin molding, so that the opposite locking pieces 5a are opposed in advance. 5b, that is, the width S of the fan housing 1 in the left-right direction (see FIG. 8) can be considered to be larger than usual. However, when the fan device is mounted on the heat sink 4 as shown in FIG. In addition, the width of the fan housing 1 is too large, and the central portion of the fan housing 1 bends upward (FIG. 9 is exaggerated).
There is a possibility that the blade of the fan main body 2 may be damaged by contacting the peripheral wall of the fan main body supporting portion of the fan housing 1.

[0010] If the locking pawls 6a, 6b press the locking portions 7a, 7b too strongly, the fan housing 1
When the fan housing 1 is removed by releasing the locked state between the fan housing 1 and the heat sink 4, the lower ends of both the locking pieces 5a and 5b must be pushed very strongly inward, which makes the removal operation extremely difficult. A new problem arises.

Therefore, in order to maintain the locked state between the fan housing 1 and the heat sink 4 without being too strong and not too weak, both the locking pieces 5a and 5b, the both locking claws 6a and 6b, and the two The dimensions of the locked parts 7a, 7b must be precisely adjusted. Therefore, it is necessary to strictly control the dimensions at the time of manufacturing and assembling the fan housing 1 and the heat sink 4, which causes a problem that the yield is reduced and the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a low-cost structure that allows a fan housing to be firmly mounted on a heat sink even if there is some dimensional error during manufacturing and assembly, and that the fan housing can be easily manufactured. It is an object of the present invention to provide a fan device that can be detached from a vehicle and a heat sink including the fan device.

[0013]

In order to achieve the above object, a fan device according to the present invention comprises a locking piece integrally formed in at least one place of the fan housing, and a tip end of the locking piece. And a locking claw that is formed and is removably locked to the locked portion on the mounted body side, wherein the locking piece has a plurality of bent portions.

According to such a configuration, even if there is a slight dimensional error during the manufacture and assembly of the fan device, the dimensional error can be absorbed by the plurality of bent portions formed on the locking pieces. By the elastic force, the locking piece can be firmly locked to the locked portion on the mounted body side, and the attachment / detachment between the fan device and the mounted body can be facilitated. Therefore, the yield can be improved, and the cost can be reduced.

Further, the fan device according to the present invention is characterized in that each of the bent portions is formed by a plurality of bent portions provided on the locking piece. At this time, it is preferable that the bent portion is formed at least at a root portion of the locking piece and a U-shaped or L-shaped formed portion.

According to such a configuration, two bent portions are formed in the base portion of the locking piece and the U-shaped or L-shaped formed portion, and the two portions are bent, thereby causing a dimensional error. Can be absorbed.

Further, in the fan device according to the present invention, the side of the fan housing opposite to the position where the engaging piece is formed may be
It is characterized in that it is detachably locked to the mounted body by a locking means. According to such a configuration, only one side of the fan housing is provided with the locking piece having a bent portion, and the opposite side may be provided with appropriate locking means. Can be easy.

Further, in the fan device of the present invention, the side of the fan housing opposite to the position where the locking piece is formed may be
It is characterized in that it is detachably and rotatably attached to the object to be attached by attaching means.

Even with such a configuration, the fan housing can be easily attached to and detached from the object to be mounted, and the fan housing can be mounted to the object to be mounted in a firmly locked state.

Further, the heat sink according to the present invention includes a base on one side of which a heating element is brought into contact, and a radiating fin formed on the other side of the base, and the fan for cooling the radiating fin. The apparatus is characterized in that it is detachably mounted. According to such a configuration, the fan device can be firmly mounted and can be applied to a heat sink with the fan device that can be easily removed.

[0021]

(First Embodiment) A first embodiment of the present invention will be described.
An embodiment will be described with reference to FIGS.
FIG. 1 is a perspective view showing a state in which the fan device according to the first embodiment of the present invention is mounted on a heat sink.
1 is a plan view of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. In addition, the fan device of the present embodiment has a C
This will be described using an example used for cooling the heat sink of the PU.

As shown in FIGS. 1 and 3, the fan device 11 according to the present embodiment is mounted on a heat sink 12 as an object to be mounted formed by extrusion molding of aluminum or the like. The heat sink 12 includes a base 13 having a rectangular shape in a plan view, and a lower surface of the base 13 is a heating element CP.
Contacted with U. The heat sink 12 and the CPU are fixed using attached fixing means such as a clip (not shown). A pair of side wall portions 14 are provided at both left and right ends of the base 13 in the drawing.
a, 14b are erected and integrally formed. And
As shown in FIG. 3, the first locked portions 15 a
And a second locked portion 15b which locks with a locking piece of a fan housing of the fan device 11 described later. Further, the second locked portion 15b is connected to the first locked portion 15
It protrudes above a. Then, the first locked portion 1
A first claw 16a having a triangular cross section is provided inside the tip of 5a.
Is formed, and a second locked claw 16b having a rectangular cross section is formed inside the distal end of the second locked portion 15b. further,
A plurality of radiation fins 17 are integrally formed at predetermined intervals on the upper surface of the base 13.

On the other hand, the fan device 11 is
2, a fan housing 21 having an axial flow fan configuration, and a fan housing 2 rotatably supporting the fan body 21 and detachably attached to the heat sink 12.
And 2.

The fan housing 22 has a U-shaped cross section including a rectangular upper wall portion 23 in a plan view and a pair of side wall portions 24a and 24b hanging from both left and right sides of the upper wall portion 23. It is formed by integral molding of synthetic resin. As shown in FIG. 1, the right side wall 24a is cut out across the lower end of the side wall 24a after and after the right end of the upper wall 23, and has an L-shaped cross section 25a. 2
5b are formed at two places, and both cutouts 25a,
U-shaped locking pieces 26a, 26 each having a U-shaped cross section whose upper end is bent downward from the edge of the upper wall portion 23 into the side wall portion 24a and lower than the lower end thereof and is bent upward.
b is formed integrally.

The U-shaped locking pieces 26a and 26b are formed at the bent ends thereof with first locking claws 27a and 27b, respectively. These first locking claws 27a and 27b are formed on the heat sink 12 side. It is located inside the locked portion 15a and is locked in a detachable manner. And both U-shaped locking pieces 26a,
26b is a base portion thereof, that is, a connecting portion P with the upper wall portion 23.
And a bent portion Q having a U-shape, the first portion of the heat sink 12 having a bent portion due to the elastic force generated by these bent portions. The locking portion 15a is strongly pressed to maintain the locked state.

Further, the left side wall portion 24b is also cut out across the lower end of the side wall portion 24b after and before the left end portion of the upper wall portion 23, similarly to the notches 25a and 25b described above. 31a, 31b are formed at two places, and the plate-shaped locking pieces 32a, which hang down from the edge of the upper wall portion 23 looking into the notches 31a, 31b inward of the side wall portion 24b and below the lower end thereof, 32b are integrally formed.

Second locking claws 33a, 33b having a rectangular cross section are formed at the ends of the plate-shaped locking pieces 32a, 32b, respectively, and these plate-shaped locking pieces 32a, 32b are connected to the heat sink 12 side. Of the second locked claw 16b. Here, these second locking claws 33
a, 33b and the second locked portion 15 of the heat sink 12
The locking means is constituted by the second locked claw 16b of b.

The two plate-shaped locking pieces 32a and 32b have a bend only at the root, that is, at a portion connected to the upper wall 23, and the second engaging member of the heat sink 12 is formed by the elastic force generated by this bend. The stopper 15b is pressed.

Further, as shown in FIGS.
A circular opening 34 is formed in the center of 3, and the fan main body 21 is attached to the opening 34.
An inner peripheral wall 35 is formed on the inner periphery of the opening 34, and a motor unit (a stator component and a rotor) for rotating a plurality of blades 43 provided radially is formed in the center of the opening 34. Device 36)
Are provided and supported. The plurality of blades 43 are integrally attached to the rotor component, and the stator component has a substrate portion 42 in a part thereof. The rotating device 36 is supported by a substrate 42 connected to the tips of four support rods 41 extending from the inner peripheral wall 35 toward the center. With such a configuration, the plurality of blades 43 attached to the rotor component of the rotating device
4 rotatably disposed.

Further, a lead wire 44 for supplying power and controlling rotation is drawn out from the rotating device 36 along the support rod 41 on the rear side, and the lead wire 44 is connected to a connector 44 a provided at the end of the lead wire 44. It is connected to a circuit (not shown).

When the fan main body 21 is driven, the blade 43 rotates and the air sucked from the upper side of the fan device 11 causes the radiating fins 17 of the heat sink 12 to move.
Is forcibly cooled, and the CPU (heating element) is cooled.

Next, the mounting of the fan device 11 configured as described above to the heat sink 12 will be described.

First, the second locking claws 33a, 33b of the two plate-shaped locking pieces 32a, 32b on the left side of the fan housing 22.
Is guided and engaged inside the second locked claw 16b of the second locked portion 15b of the heat sink 12, and at the same time, the fan device 11 and the heat sink 12 are positioned such that the longitudinal ends thereof are aligned. I do.

Then, the two second locking claws 33a in the engaged state,
The U-shaped locking pieces 26a, 26b are brought into contact with the first locked portion 15a of the heat sink 12 by swinging the fan device 11 around the center 33b. Then, when the right side of the fan device 11 is pushed into the heat sink 12 side, the two U-shaped locking pieces 26
a and 26b are a root portion P (see FIG. 3) and a U-shaped bent portion Q
(See FIG. 3), the first locking claws 27a, 27b at the tips of both U-shaped locking pieces 26a, 26b.
Slides on the first locked claw 16a of the heat sink 12 and moves below the first locked claw 16a, and the U-shaped locking pieces 26a and 26b that have been bent are restored to the first locked state. It is locked to the stop 15a. At the same time, the lower ends of both side walls 24a and 24b of the fan housing 22 are connected to the first and second locked portions 1.
The fan device 11 is fixed to the heat sink 12 by being abutted and supported on the distal ends (upper ends) of 5a and 15b.

On the other hand, the fan device 11 is connected to the heat sink 12
When removing from the fan device 11, insert both fingers into the notches 25a, 25b of the right side wall portion 24a and press the U-shaped locking pieces 26a, 26b inwardly with the fingers. The locking pieces 26a and 26b are at their roots P
At this time, the U-shaped locking pieces 26a and 26b are released from the locked state with the first locked portion 15a.

In this state, the right side of the fan device 11 is
While swinging upward around the locking claws 33a and 33b, the second locking claws 33a and 33b on the opposite side are moved to the second locked claw 16b of the second locked portion 15b of the heat sink 12.
The fan device 11 can be easily removed from the heat sink 12 by releasing the engagement state with the fan device 11.

Therefore, according to the first embodiment, the two U-shaped locking pieces 26a and 26b have the two bent portions of the root portion P and the bent portion Q (both shown in FIG. 3). Even if a slight dimensional error occurs in the device 11 or the heat sink 12, the dimensional error can be absorbed by the elasticity of these two bent portions, and both U and U
It is possible to maintain an appropriate locking state between the character-shaped locking pieces 26a, 26b and the first locked portion 15a without being too strong and not too weak. As a result, the fan device 1
1 can be securely fixed to the heat sink 12 without rattling, and the fan device can be easily removed.

Further, the dimensional error can be absorbed by the plurality of bent portions, and the dimensional control at the time of manufacturing and assembling can be eased, so that the yield can be improved and the manufacturing cost can be reduced. .

Further, in the first embodiment described above, U-shaped locking pieces 26a and 26b are formed at two places on the right side, and plate-shaped locking pieces 32a and 32b are formed at two places on the left side. Fan device 11 and heat sink 12
However, the structure for locking the fan device 11 and the heat sink 12 is not limited to this, and as shown in FIG. The number may be appropriately changed according to the shape and size of the device. FIG. 4 shows the relationship between the locking pieces in the fan housing 22 in a simplified manner.

For example, as shown in FIG. 4 (a), U-shaped locking pieces may be provided at all two places on the left and right of the fan device 11, or as shown in FIGS. 4 (b) and 4 (d). The number of the U-shaped locking pieces and the number of the plate-shaped locking pieces may be different in the opposed side wall portions. Further, as shown in FIG. 4C, a plate-shaped locking piece may be provided on an adjacent side wall of the three side walls of the fan device 11, and a U-shaped locking piece may be provided on the remaining side wall. Further, as shown in FIGS. 4E, 4F and 4G, a U-shaped locking piece or a plate-shaped locking piece may be formed at a corner of the upper wall 23 of the fan device 11. As described above, even if the number and positions of the locking pieces are changed, it goes without saying that the appropriate locking state as described above is maintained.

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIGS. However, FIG.
Is a sectional view of a fan device according to a second embodiment of the present invention,
FIG. 6 is a sectional view taken along line BB of FIG.

In FIGS. 5 and 6, the same reference numerals as those in FIGS. 1 to 3 denote the same or corresponding elements, and the difference from FIGS. 1 to 3 is that a plate-shaped member provided on the left side of the fan device 11 is provided. Instead of the stop pieces 32a and 32b, the side wall portion 24b and the side wall portion 14b of the heat sink 12 are swingably connected by mounting means having pins.

More specifically, as shown in FIG. 5, U-shaped engaging pieces 26a and 26b are formed on the right side wall portion 24a and the side wall portion 2 is formed in the same manner as in the first embodiment.
A hole 51 that penetrates the side wall 24b in the longitudinal direction (a direction perpendicular to the plane of FIG. 5) is formed at the tip (lower end) of the left side wall 24b opposite to 4a.

Further, as shown in FIG.
A pair of support protrusions 52a and 52b are formed at both front and rear ends of the side wall 14b on the heat sink 12 side facing the heat sink 12b, and the support protrusions 52a and 52b also have holes 53a in the front-rear direction. , 53b are formed.

The support projections 52a, 52
b between the side walls 24b in which the holes 51 are formed.
Are inserted into the holes 51 of the side wall 24b and the holes 53a, 53b of the support protrusions 52a, 52b.
4 is inserted so as to be detachable and not easily come off. In this way, as shown in FIG. 5, the fan device 11 swings around the pin 54 so as to be detachably attached to the heat sink 12. Here, the side wall portion 24b on the fan housing 23 side
Hole 51, both protrusions 52a, 52 on the heat sink 12 side
The mounting means is constituted by the holes 53a and 53b of FIG.

Then, the fan device 11 is connected to the heat sink 1.
In the case of mounting on the fan unit 11, first, the side wall portion 24b where the hole 51 of the fan device 11 is formed is connected to both the support protrusions 5 of the side wall portion 14b on the side of the heat sink 12 opposed thereto.
2a and 52b. Next, the hole 51 on the side of the fan device 11 and the holes 53a of the two support protrusions 52a and 52b,
After positioning so that the pins 53b communicate with each other, the pins 54 are inserted.

Subsequently, in this state, both U-shaped locking pieces 26
The fan device 11 is swung about the pin 54 as a swing center so that the a and 26b abut on the first locked portion 15a of the heat sink 12, and the U-shaped locking pieces 26a and 26b are first locked. The fan device 11 is fixed to the heat sink 12 by being locked to the stopping portion 15a.

The fan device 11 is connected to the heat sink 12.
To remove from both sides, both cutouts 25 of right side wall 24a
a, 25b, and insert both U-shaped locking pieces 2 with fingers.
6a, 26b are pressed inward of the fan device 11, and both U-shaped locking pieces 26a, 26b are bent toward the inside of the fan device 11 at their roots P to lock with the first locked portion 15a. Is released, the right side of the fan device 11 is swung upward about the pin 54, and the fan device 11 can be removed from the heat sink 12 by extracting the pin 54.

Therefore, according to the second embodiment, the same effects as those of the first embodiment can be obtained, and both U-shaped locking pieces 26a, 26 of the fan device 11 can be obtained.
Since the side opposite to b is configured to be swingable about the pin 54, the fan device 11 can be easily attached to and detached from the heat sink 12, and the fan device 11
Can be firmly locked to the heat sink 12.

Further, as a third embodiment of the present invention, instead of the above-mentioned U-shaped locking pieces 27a and 27b, for example, as shown in FIG. 7, an L-shaped locking piece may be formed. In this fan device, both notches 25 of the fan housing 22 are provided.
a, 25b, from the edge of the upper wall portion 23 to the side wall portion 24a.
L-shaped engaging pieces 61 each having an L-shaped cross-section and hanging downward from the lower end of the inner side of the lower part are integrally formed.
A first bent portion is provided at the base portion V of the L-shaped locking piece 61, and a second bent portion is provided at the L-shaped bent portion W.

Even with such a configuration, the L-shaped engaging piece 61 can be connected to the base portion V with the upper wall portion 23 and the L-shaped bent portion W.
Since the elasticity is increased at the two positions described above, a slight dimensional error can be absorbed, and an appropriate locked state can be maintained.

Further, in each of the above embodiments, the U-shaped locking pieces 27a, 2
7b and the case where the L-shaped locking piece 61 is used have been described. However, the bent portion is not limited to the locking piece having these shapes, and in other words, the dimensional error of the fan housing 22 and the heat sink 12 can be absorbed. What is necessary is just to be what was formed with two or more.

In each of the above embodiments, the case where the fan device 11 is provided with the fan body 21 having the axial fan configuration has been described. However, the present invention is not particularly limited to the axial fan, and the sirocco fan is not limited to the axial fan. Or a cross-flow fan configuration.

Further, in each of the above-described embodiments, an example is described in which the mounted body is the heat sink 12 and is used particularly for cooling the heat sink of the CPU used in the personal computer. Heat sink 12
It is needless to say that the fan housing may be mounted on the chassis so as to be adjacent to the heating element of the OA equipment, for example, as long as the fan housing is detachably mounted. I do not care.

The present invention is not limited to the above embodiments, and various changes other than those described above can be made without departing from the spirit of the present invention.

[0056]

As described above, according to the first aspect of the present invention, since the locking piece has a plurality of bent portions, there is a slight dimensional error during the manufacture and assembly of the fan device. Also, the dimensional error can be absorbed by the plurality of bent portions, and the attachment and detachment between the fan device and the mounted member can be facilitated. As a result, the dimensional control can be eased, the yield can be improved, and the cost can be reduced.

According to the second, third and fourth aspects of the present invention, the bent portion provided on the locking piece is formed by a plurality of bent portions, and particularly, the locking piece is U-shaped or L-shaped. Dimensional errors during manufacturing and assembly of the fan device are absorbed by the base of the locking piece and the two bends in the U-shaped or L-shaped formed part. Can be.

According to the fifth aspect of the present invention, the locking piece having a plurality of bent portions may be provided only on one side of the fan housing, so that the structure of the fan device is simplified. Becomes possible.

According to the sixth aspect of the present invention, the side of the fan housing opposite to the position where the engaging piece is formed is formed as follows.
Since the fan housing is detachably and rotatably attached to the object to be mounted by the mounting means, the fan housing can be easily attached to and detached from the object to be mounted, and can be mounted in a firmly locked state.

According to the seventh aspect of the present invention, the fan device can be firmly mounted and can be applied to a heat sink with a fan device that can be easily removed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a plan view of the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a schematic diagram showing a modification of the first embodiment of the present invention.

FIG. 5 is a sectional view showing a second embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a partial sectional view of a third embodiment of the present invention.

FIG. 8 is a sectional view of a conventional example.

FIG. 9 is a cross-sectional view showing a mounted state of a conventional fan device and a heat sink.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Fan apparatus 12 Heat sink (attached body) 13 Base 15a 1st locked part 15b 2nd locked part 16a 1st locked claw 16b 2nd locked claw 17 Radiation fin 21 Fan main body 22 Fan housing 26a , 26b U-shaped locking piece 27a, 27b First locking claw 32a, 32b Plate-shaped locking piece 33a, 33b Second locking claw 61 L-shaped locking piece 51, 53a, 53b Hole 52a, 52b Projection 54 Pin

Claims (7)

[Claims] 1. A fan device comprising: a fan housing detachably mounted on an object to be mounted; and a fan main body rotatably supported by the fan housing. A locking piece formed, and a locking claw formed at a tip of the locking piece and removably locking to a locked portion on the mounted body side, wherein the locking piece has a plurality of flexures. A fan device having a portion. 2. The fan device according to claim 1, wherein each of the bent portions is formed by a plurality of bent portions provided on the locking piece. 3. The fan device according to claim 2, wherein the bent portion is formed at least at a root portion of the locking piece and a U-shaped formed portion. 4. The fan device according to claim 2, wherein the bent portion is formed at least at a root portion of the locking piece and an L-shaped molded portion. 5. A side portion of the fan housing opposite to a position where the locking piece is formed, is removably locked to the mounted body by locking means. 5. The fan device according to any one of 1 to 4. 6. A fan housing, wherein a side portion of the fan housing opposite to a position where the locking piece is formed is detachably and rotatably mounted to the mounted body by mounting means. The fan device according to claim 1. 7. A heat sink comprising the fan device according to claim 1, wherein one side of the heat sink is in contact with a heating element, and the other side of the base has heat radiation formed thereon. And a fin, wherein the fan device is detachably mounted to cool the radiation fin.