JP2000172031A - Fan fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan fixing device capable of mounting a fan in a manner as to be high in vibration proof effect and to obviate the leakage of wind. SOLUTION: A cylindrical fixing member 3 for mounting the fan 1 to a device casing 2 is integrally molded of an elastic member, such as rubber. Projecting parts 3a for mounting to the device casing 2 are formed at two points on a diagonal line toward the inner side in the mounting surface side end position of the device casing 2 to the fixing member 3. Projecting parts 3c for fixing the fan 1 are formed at two points apart from the mounting surface side end positions to the device casing 2 on the other diagonal line. Screws 5 are passed into screw holes 3b of the projecting parts 3a and are screwed to the device casing 2. The fan 1 is fixed by means of screws 6 to the projecting parts 3c. The propagation of the vibration to the device casing 2 is prevented and the generation of the sound from the device casing 2 is prevented by the elasticity of the fixing member 3. Since the entire circumference of the fan 1 is covered by the fixing member 3, there is no leakage of the wind and the blasting efficiency is good.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan fixing device for attaching and fixing fans to housings of various devices.

[0002]

2. Description of the Related Art With respect to this type of fan fixing device, vibration proof and sound proof become problems. For example, Japanese Patent Application Laid-Open No. Hei 5-167280 proposes a technique relating to vibration-proof mounting of a ventilation fan.
Japanese Patent Application Laid-Open No. 5 (1999) -2005 proposes a vibration-proof mounting technology for a cooling fan of a plasma display. However, Japanese Patent Application Laid-Open
In the anti-vibration mounting structure of the fan disclosed in 167280,
The fan and the device housing are connected by rigid screws, and the vibration is propagated as it is, and the contact area of the vibration isolating member is large and the spring constant cannot be reduced, so that low-frequency vibration cannot be cut off. There is. Japanese Patent Application Laid-Open No. Hei 9
In the anti-vibration mounting structure of the fan disclosed in Japanese Patent No. 270975, the fan and the device housing are connected by a rigid screw, and in addition to the problem that the vibration propagates as it is, a gap is provided between the fan and the device housing. There is a problem that the wind leaks.

[0003] Accordingly, an object of the present invention is to provide a fan fixing device which has a large anti-vibration effect and can be mounted with a fan so as not to leak wind.

[0004]

According to a first aspect of the present invention, there is provided a fan fixing device, wherein an end of an outer portion of a fan facing at least a mounting surface side to an apparatus housing is provided to achieve the above object. A cylindrical elastic body for holding the fan and fixing the fan inside the cylindrical elastic body by attaching the fan to the device housing by mounting the fan on the unit side; And a second convex portion for attaching the cylindrical elastic body to the device housing, and the first and second convex portions are respectively provided so as to protrude inward in a radial direction of the cylindrical elastic body. It is characterized by becoming.

According to a second aspect of the present invention, in order to achieve the above object, the fan is mounted on at least one end of the outer portion of the fan facing the mounting surface of the fan to the device housing. A cylindrical elastic body capable of fixing the fan and holding the fan; a first convex portion for fixing the fan inside the cylindrical elastic body; and attaching the cylindrical elastic body to the device housing. A second convex portion for projecting the first convex portion radially inward of the cylindrical elastic body, and projecting the second convex portion radially outward of the cylindrical elastic body. It is characterized by being protruded.

According to a third aspect of the present invention, in order to achieve the above object, the first convex portion is formed by connecting the cylindrical elastic body to an end of the cylindrical elastic body on the mounting surface side of the device housing. It is characterized by being spaced apart in the axial direction of the body.

According to a fourth aspect of the present invention, in order to achieve the above object, the tubular elastic body surrounds and holds the entire outer shape of the fan. A pair of fans are provided inside the cylindrical elastic body and separated by the thickness of the fan in the axial direction of the cylindrical elastic body, and the fan is held between the pair of first convex portions. .

According to a fifth aspect of the present invention, in order to achieve the above object, the cylindrical elastic body surrounds and holds at least the outer surface of the fan on the side of the mounting surface to the apparatus housing. The fan has an inner dimension slightly smaller than the outer dimension of the fan, and abuts the fan on the mounting surface side of the cylindrical elastic body to the apparatus housing instead of the first protrusion. Forming a third convex portion for positioning, and inserting the fan into the device housing from the side opposite to the mounting surface side of the cylindrical elastic body to the device housing; It is characterized in that it can be held by sandwiching the fan with elasticity.

According to a sixth aspect of the present invention, in order to achieve the above object, the length of the cylindrical elastic body in the axial direction is longer than the thickness of the fan.

According to a seventh aspect of the present invention, in order to achieve the above object, the cylindrical elastic body and the projection are formed by integral molding of rubber.

According to another aspect of the present invention, in order to achieve the above object, the cylindrical rubber member is provided at one end of an inner cylindrical rubber member having substantially the same shape as the outer portion of the fan. A fourth projection for attaching to the body is formed, and a fifth projection for attaching the fan is formed inside the other end, and the fan can be vulcanized and adhered to the outer surface of the fifth projection. It is characterized by becoming.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are side sectional views of a first embodiment of a fan fixing device according to the present invention, FIG. 1B is a front view of a state in which the fan is fixed to an apparatus housing, and FIG. It is a front view of the fixing member for attaching to a body. Note that FIG. 1A shows a cross section taken along line AA of FIG. 1B. In the figure, reference numeral 1 denotes a fan, 2 denotes an apparatus housing, and 3 denotes a cylindrical fixing member for attaching the fan 1 to the apparatus housing 2, which is integrally formed of an elastic member such as rubber.

At the end of the fixing member 3 on the side of the mounting surface on the device housing 2, a convex portion 3 for mounting on the device housing 2 is provided.
a are formed diagonally toward the inside of the fixing member 3, and a screw hole 3b is provided in the projection 3a. Further, on another diagonal line, a convex portion 3c for fixing the fan 1 is provided.
Are formed at two locations separated from the end of the mounting surface side of the device housing 2. A female screw 4 for fixing the fan 1 with a screw is inserted into the convex portion 3c.

The procedure for fixing the fan 1 to the device housing 2 by this fan fixing device is as follows. First, a screw 5 is passed through the screw hole 3 b of the convex portion 3 a of the fixing member 3, and the tapped hole is opened in the device housing 2. Screw in the screw 5. Next, the fan 1 is fixed to the female screw 4 inserted in the convex portion 3c of the fixing member 3 with the screw 6.

In such a mounting structure, when the fan 1 rotates, the vibration of the fan 1 occurs. However, since the fixing member 3 is formed of an elastic member, the vibration does not propagate to the apparatus housing 2 and No sound is generated from the body 2, and a quiet device can be realized. Further, since the gap between the device housing 2 and the fan 1 is covered with the fixing member 3 to cover the entire outer periphery of the fan 1 and is shielded from the wind, there is no air leakage and the air blowing efficiency is good.

In the present embodiment, since two convex portions 3a for attachment to the apparatus housing 2 are formed diagonally toward the inside of the fixing member 3, no extra space is required. , Can be installed in narrow spaces. Although the fixing part to the device housing 2 and the part for fixing the fan 1 to the fixing member 3 are both illustrated at two places, they may be formed at three or more places.

A plurality of embodiments will be described below, and the same or similar parts as those in the first embodiment will be described with the same reference numerals.

FIG. 2 shows a second embodiment of the fan fixing device according to the present invention.
FIGS. 5A and 5B are a side cross-sectional view (A), a front view of a state in which a fan is fixed to an apparatus housing, and a front view (C) of a fixing member for attaching the fan to the apparatus housing. FIG. 2
FIG. 2A shows an AA cross section of FIG.

The present embodiment differs from the first embodiment in that two convex portions 3a for attachment to the apparatus housing 2 are formed diagonally toward the outside of the fixing member 3. That is, in the present embodiment, since the protrusions 3 a for attachment to the device housing 2 are formed at two diagonal lines toward the outside of the fixing member 3, the fan 1 is fixed to the fixing member 3 first. After that, the fixing member 3 can be attached to the apparatus housing 2, and the assembling property is improved.

FIG. 3 shows a third embodiment of the fan fixing device according to the present invention.
FIGS. 5A and 5B are a side cross-sectional view (A), a front view of a state in which a fan is fixed to an apparatus housing, and a front view (C) of a fixing member for attaching the fan to the apparatus housing. FIG. 3
(A) shows an AA cross section of FIG. 3 (B).

The fixing member 3 of the present embodiment includes the device housing 2
Two convex portions 3a for attachment to the fixing member 3 are formed diagonally toward the outside of the fixing member 3, and these convex portions 3a
Is provided with a screw hole 3b. Further, inside the fixing member 3, four protrusions 3d for fixing the fan 1 are formed at four positions separated from the end position on the mounting surface side to the apparatus housing 2. Further, four protrusions 3e for fixing the fan 1 are formed at positions separated from the protrusions 3d by the thickness of the fan 1.

The procedure for fixing the fan 1 to the device housing 2 by this fan fixing device is as follows. First, the fan 1 is inserted from the side opposite to the side where the fixing member 3 is attached to the device housing 2, and the fan fixing protrusion is used. It hits the part 3d. Then, the other convex portion 3e opened by elasticity returns, and the fan 1 moves the convex portion 3d and the convex portion 3e.
It is sandwiched between and fixed. That is, in the present embodiment, the fan 1 can be fixed and held only by inserting it into the fixing member 3,
No screwing is required, the work time is short, and the assemblability is very good. Also, the number of screws used is reduced,
Cost can be reduced.

FIG. 4 shows a fourth embodiment of the fan fixing device according to the present invention.
3A is a side cross-sectional view of the embodiment, FIG. 3B is a front view of a state in which the fan is fixed to the device housing, and FIG. 3B is a front view of a fixing member for attaching the fan to the device housing. FIG. 4
(A) shows the AA cross section of FIG. 4 (B).

The fixing member 3 is a cylindrical body having an inner shape substantially the same as the outer size of the fan 1. The inner shape of the fixing member 3 on the side opposite to the mounting surface to the apparatus housing 2 is made slightly smaller than that of the fan 1. It is. At the end of the fixing member 3 on the side of the mounting surface on the device housing 2, a protrusion 3 a for mounting on the device housing 2 is provided.
However, two portions are formed on the diagonal line toward the outside of the fixing member 3, and the protrusion 3a is provided with a screw hole 3b. Further, four convex portions 3d for fixing the fan 1 are formed on the inner side of the fixing member 3 so as to be separated from an end position on the mounting surface side of the device housing 2.

The procedure for fixing the fan 1 to the device housing 2 by this fan fixing device is as follows. First, the opening of the fixing member 3 on the side opposite to the side where the fixing member 3 is attached to the device housing 2 is opened, and the fan 1 is inserted. It hits the convex part 3d for fixing the fan. Then, the opened opening returns with elasticity, and the outer shape of the fan 1 is sandwiched and fixed. That is, also in the present embodiment, the fan 1 can be fixed and held only by inserting the fan 1 into the fixing member 3, the screwing is unnecessary, the working time is short, and the assembling property is extremely improved. In addition, the number of screws used is reduced, and the cost can be reduced.

FIG. 5 shows a fifth embodiment of the fan fixing device according to the present invention.
(A), a front view of a state in which the fan is fixed to the device housing (B), a front view of a fixing member for attaching the fan to the device housing (C), a side cross section of the fixing member. It is a figure (D). Note that FIG. 5A corresponds to A in FIG.
3A shows a cross section.

This embodiment is different from the fourth embodiment in that:
The length of the cylindrical portion of the fixing member 3 is longer than the thickness of the fan 1. Therefore, the entire fan 1 is sandwiched and held by elasticity, and the end of the cylindrical portion and the convex portion 3d for fixing the fan are provided.
Even so, the holding state is stable because the holding state is stabilized. Also in this embodiment, it is only necessary to insert the fan, and it is not necessary to screw it in, the work time is short, and the assembling property is good. In addition, the fan 1 can be fixed and held only by being inserted into the fixing member 3, so that screwing is not required, the working time is short, the assemblability is very good, the number of screws used is reduced, and the cost can be reduced. However, the fixed state is more stable than in the fourth embodiment, and the shape is simpler and the cost is lower than in the third embodiment.

FIG. 6 shows a sixth embodiment of the fan fixing device according to the present invention.
(A), a front view of a state in which the fan is fixed to the device housing (B), a front view of a fixing member for attaching the fan to the device housing (C), and a side cross section of the fixing member. It is a figure (D). Note that FIG. 6A is a diagram corresponding to A in FIG.
3A shows a cross section.

At the end of the fixing member 3 of this embodiment on the mounting surface side of the mounting member 2, a convex portion 3 a for mounting on the device housing 2 is provided with a diagonal line toward the inside of the fixing member 3. The upper part is formed at two places, and the protrusion 3a is provided with a screw hole 3b. Further, a convex portion 3d for fixing the fan 1 is provided inside the fixing member 3 on the side opposite to the mounting surface side to the apparatus housing 2, so that the end of the fan 1 can be vulcanized and adhered. Has become.

That is, in this embodiment, the fan 1 is previously vulcanized and bonded to the fixing member 3 and the fixing member 3 is fixed to the apparatus housing 2 with the screw 5 using the screw hole 3 b of the fixing member 3. The installation ends with. That is, in the present embodiment, since the fan 1 and the fixing member 3 are integrated before the attachment, the attachment to the apparatus housing 2 can be performed very easily.

[0031]

According to the first aspect of the present invention, as described above, the fan fixing device is mounted on the end portion of the external portion of the fan facing at least the mounting surface side of the device housing to mount the fan. And a first elastic part for fixing the fan inside the cylindrical elastic body, and a first convex part for fixing the cylindrical elastic body to the device housing. Since two convex portions are provided and these first and second convex portions are respectively provided to protrude inward in the radial direction of the cylindrical elastic body, even if the fan rotates and the vibration is generated, the cylindrical elastic portion is formed. Due to the elasticity of the body, the vibration does not propagate to the device housing, so that no sound is generated from the device housing, and there is an effect that a quiet device and environment can be realized. In addition, since the entire outer periphery of the fan can be surrounded by the cylindrical elastic body, there is no gap between the device housing and the fan, so that the wind can be shielded. is there. Furthermore, by forming two protrusions on the diagonal line toward the inside of the cylindrical elastic body for mounting on the device housing, the mounting can be performed in a narrow space without requiring an extra space. There is.

In the fan fixing device according to the second aspect, as described above, the first convex portion for fixing the fan inside the cylindrical elastic body projects inward in the radial direction of the cylindrical elastic body. Since the second convex portion for attaching the cylindrical elastic body to the device housing is formed so as to protrude outward in the radial direction of the cylindrical elastic body, in addition to the above-described common effects, the fan is provided with a cylindrical elastic body. After being fixed to the body first, the tubular elastic body can be attached to the device housing, which has the effect of improving the ease of assembly.

In the fan fixing device according to the third aspect, as described above, the first protrusion is formed by moving the first elastic portion from the end of the cylindrical elastic body on the mounting surface side of the device housing in the axial direction of the cylindrical elastic body. In addition to the above common effects, the fan does not come into contact with the device housing, so that the vibration of the fan can be prevented from directly transmitting to the device housing. This has the effect of increasing the size.

In the fan fixing device according to the fourth aspect, as described above, the cylindrical elastic body surrounds and holds the entire outer shape of the fan, and the first convex portion is formed of the cylindrical elastic body. Because a pair of first fans is provided on the inner side and separated by the thickness of the fan in the axial direction, and the pair of first projections sandwiches and holds the fan. The fan can be held simply by inserting it, and no screwing is required for mounting, and the working time is short and the assembly is easy. In addition, the number of screws to be used is reduced, so that the cost can be reduced.

In the fan fixing device according to the fifth aspect, as described above, the cylindrical elastic body surrounds and holds at least the outer surface of the fan at the side of the mounting surface to the apparatus housing. A third dimension which is slightly smaller than the outer dimension of the cylindrical elastic body, and which is used for abutting a fan on the mounting surface side of the cylindrical elastic body to the apparatus housing to position the fan.
Is formed, a fan is inserted into the device housing from the side opposite to the mounting surface side of the cylindrical elastic body to the device housing, and the fan is sandwiched and held by the elasticity of the cylindrical elastic body. Therefore, in addition to the above common effects, there is an effect that the shape can be simplified and the cost can be reduced accordingly.

In the fan fixing device according to the sixth aspect, as described above, the length of the cylindrical elastic body in the axial direction is longer than the thickness of the fan. Is more stable.

In the fan fixing device according to the seventh aspect, as described above, since the cylindrical elastic body and the convex portion are formed by integral molding of rubber, the production cost is extremely reduced in addition to the above-mentioned common effects. In addition, since the number of parts is one, there is an effect that no assembly cost is required.

As described above, in the fan fixing device according to the eighth aspect, the cylindrical rubber body is attached to one end of the cylindrical rubber body having the same internal shape as the outer shape of the fan. A fourth protrusion for attaching the fan is formed, and a fifth protrusion for attaching the fan is formed inside the other end, and the fan can be vulcanized and adhered to the outer surface of the fifth protrusion. ,
In addition to the effects common to the first aspect, there is an effect that the attachment of the fan and the cylindrical rubber body to the apparatus housing can be made extremely simple.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a first embodiment of a fan fixing device according to the present invention (A), a front view of a state in which a fan is fixed to an apparatus housing (B), and a view for attaching a fan to an apparatus housing. It is a front view (C) of a fixing member.

FIG. 2 is a side cross-sectional view of a second embodiment of the fan fixing device according to the present invention (A), a front view of a state in which the fan is fixed to the device housing (B), and a diagram for attaching the fan to the device housing. It is a front view (C) of a fixing member.

FIG. 3 is a side cross-sectional view of a third embodiment of the fan fixing device according to the present invention (A), a front view of a state in which the fan is fixed to the device housing (B), and a diagram for attaching the fan to the device housing. It is a front view (C) of a fixing member.

FIG. 4 is a side sectional view (A) of a fourth embodiment of the fan fixing device according to the present invention, a front view (B) of a state in which the fan is fixed to the device housing, and a diagram for attaching the fan to the device housing. It is a front view (C) of a fixing member.

FIG. 5 is a side sectional view (A) of a fifth embodiment of the fan fixing device according to the present invention, a front view (B) of a state in which the fan is fixed to the device housing, and a diagram for attaching the fan to the device housing. Front view (C) of fixing member, side sectional view (D) of fixing member
It is.

FIG. 6 is a side cross-sectional view of a sixth embodiment of the fan fixing device according to the present invention (A), a front view in a state where the fan is fixed to the device housing (B), and a diagram for attaching the fan to the device housing. Front view (C) of fixing member, side sectional view (D) of fixing member
It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan 2 Device housing 3 Cylindrical fixing member 3a, 3c, 3d, 3e Convex part 3b Screw hole 4 Female screw 5, 6 Screw

Claims (8)

[Claims] At least one end of the outer portion of the fan facing the mounting surface of the fan is mounted on the end of the fan so that the fan can be fixed to the device housing and the cylindrical elastic member for holding the fan is provided. A first protrusion for fixing the body, a fan inside the cylindrical elastic body, and a second protrusion for attaching the cylindrical elastic body to the device housing; A fan fixing device, wherein each of the second convex portions protrudes inward in the radial direction of the cylindrical elastic body. 2. A tubular elastic body which is attached to at least an end of an outer portion of a fan facing an attachment surface side of the fan to enable fixing of the fan to the device housing and holds the fan. A first convex portion for fixing a fan inside the cylindrical elastic body, and a second convex portion for attaching the cylindrical elastic body to the device housing;
A fan fixing device characterized in that a convex portion is provided inwardly in the radial direction of the tubular elastic body, and the second convex portion is provided outwardly in the radial direction of the tubular elastic body. . 3. The apparatus according to claim 2, wherein the first protrusion is spaced apart from an end of the cylindrical elastic body on the mounting surface side of the device housing in the axial direction of the cylindrical elastic body. Item 3. The fan fixing device according to item 1 or 2. 4. The cylindrical elastic body surrounds and holds the entire outer shape of the fan, and holds the first convex portion inside the cylindrical elastic body in the axial direction of the cylindrical elastic body. The fan fixing device according to any one of claims 1 to 3, wherein a pair of the first and second first protrusions are provided so as to be separated from each other by a thickness of the fan, and the pair of first protrusions sandwiches the fan. 5. The cylindrical elastic body surrounds and holds at least the outer surface of the fan at the mounting surface side to the device housing, and has an inner dimension slightly smaller than the outer dimension of the fan. Forming a third convex portion for abutting and positioning the fan on the mounting surface side of the tubular elastic body to the device housing instead of the first convex portion; The fan is inserted into the device housing from the side opposite to the mounting surface side of the cylindrical elastic body to the device housing, and the fan can be sandwiched and held by the elasticity of the cylindrical elastic body. The fan fixing device according to any one of claims 1 to 3, wherein: 6. The fan fixing device according to claim 5, wherein an axial length of the cylindrical elastic body is longer than a thickness of the fan. 7. The fan fixing device according to claim 1, wherein said cylindrical elastic body and said convex portion are formed by integral molding of rubber. 8. A fourth convex portion for attaching the cylindrical rubber body to the device housing is formed at one end of a cylindrical rubber body having an inner shape substantially the same as the outer shape of the fan. A fan fixing device, wherein a fifth projection for attaching the fan is formed inside the end, and the fan can be vulcanized and bonded to an outer surface of the fifth projection.