JP2011044657A - Fan outer frame component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan outer frame component for a fan capable of enhancing productivity, while maintaining vibration damping performance of the fan. <P>SOLUTION: The fan outer frame component 3 includes a high-rigidity part 10, and low-rigidity parts 12a-12d, the high rigidity part has rigidity required for holding a shape of the outer frame component, and is constituted as the body part. Each low-rigidity part having a portion projected outward from the high rigidity part is constituted of a material, having rigidity relatively lower than that of the high rigidity part and secures the vibration damping performance. A vibration-damping member is coupled integrally with an outer circumferential part of the body part having a hole where the fan is to be installed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fan outer frame part.

  Electronic devices such as navigation devices are cooled by providing a cooling fan for discharging heat generated from components that are internal heat sources to the outside of the electronic device. Such a cooling fan is attached to the attachment portion via a vibration damping member in order to reduce the sound generated by the vibration associated with the operation of the fan (see Patent Document 1, etc.).

JP 2008-124257 A

  However, the fan mounting structure as described above requires a process of accurately mounting a damping member having low rigidity at a specified position, and the number of parts is large, so that it cannot be said that productivity is good.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to improve productivity while maintaining vibration damping performance of a fan.

  In order to solve the above-described problems, in the present invention, the portion of the outer frame component of the cooling fan that contacts the housing of the electronic device is formed of a material having low rigidity, thereby facilitating the mounting of the cooling fan.

  For example, the fan outer frame component of the present invention is characterized in that a damping member is integrally coupled to the outer peripheral portion of the main body having a hole in which the fan is installed.

The perspective view of an onboard equipment. The perspective view of the back surface of an onboard equipment. The disassembled perspective view of the back surface of an onboard equipment. The perspective view of an outer frame component. The front view and side view of outer frame components. The perspective view of the modification of outer frame components. The perspective view of the modification of outer frame components.

  Below, the onboard equipment 1 which is an electronic device with which one Embodiment of this invention was applied is demonstrated with reference to FIGS. In addition, FIGS. 1-7 does not show all the structures of the onboard equipment 1, and is drawing a part of structure suitably abbreviate | omitting for easy understanding.

  1 and 2 are perspective views of the appearance of the vehicle-mounted device 1. In FIG. 1, the surface 401 provided with the disk insertion opening of the disk drive device 400 is arranged in front of the right side. In FIG. 2, the back surface 402, which is the surface opposite to the surface 401 provided with the disk insertion opening of the vehicle-mounted device 1, is arranged in front of the left side. FIG. 3 is a perspective view of the vehicle-mounted device 1 in a state where the top plate 300, the outer wall of the housing, and the disk drive device 400 of the vehicle-mounted device 1 are removed. FIG. 4 is a perspective view of the outer frame part 3 of the cooling fan unit 2 provided on the back surface 402 of the vehicle-mounted device 1, and FIG. 5 is a front view and a side view of the outer frame part 3 of the cooling fan unit 2. . 6 and 7 are perspective views showing modified outer frame components 103 and 203, respectively, which are modified examples of the outer frame component 3 of the cooling fan unit 2.

  In the following, “right” and “left” are based on when the surface 401 provided with the disc insertion slot of the disc drive device 400 is placed in front.

  As shown in FIG. 1, the vehicle-mounted device 1 includes a housing 100 that is a box-shaped member having a front surface 401 on which a disk insertion port of the disk drive device 400 is provided. The casing 100 has a flat rectangular parallelepiped shape, and includes a top plate 300, a surface 401 provided with a disc insertion slot, a back surface 402 which is a surface facing the surface 401 provided with a disc insertion slot, and a left side surface. 200, a right side surface 250 (not shown), and a bottom surface (not shown).

  The casing 100 is usually made of a metal to ensure rigidity, heat resistance, and the like, but is not limited thereto, and may be made of carbon, resin, or the like.

  An opening 403 for exhaust or intake is provided on the back surface 402 of the housing 100 (see FIG. 2). The opening 403 discharges air including heat generated from the electronic component housed in the vehicle-mounted device 1 to the outside of the vehicle-mounted device 1 or releases outside air to the electronic component housed in the vehicle-mounted device 1. It is provided for cooling by applying.

  Note that the electronic components housed in the housing 100 include various units, hard disks, circuit boards for performing various processes, and the like.

  An opening 403 of the housing 100 is provided with a cooling fan unit 2 for cooling the inside of the vehicle-mounted device 1 (see FIG. 3). The cooling fan unit 2 creates an air flow by the rotation of a plurality of propellers formed of resin or the like. The propeller rotates in a direction in which air inside the housing 100 of the vehicle-mounted device 1 is discharged to the outside of the vehicle-mounted device 1 or in a direction in which air outside the vehicle-mounted device 1 is taken into the housing 100 of the vehicle-mounted device 1. Note that the rotation of the propeller (start of rotation, end of rotation, rotation speed, etc.) is controlled by a circuit such as a circuit board provided in the vehicle-mounted device 1.

  The housing 100 and the top plate 300 are coupled by screws.

  The disk drive device 400 has a flat rectangular parallelepiped shape with a surface 401 provided with a disk insertion opening as a front surface, and is sandwiched and fixed by the top plate 300 of the housing 100.

  In the disk drive device 400, one end of a flexible substrate having high elasticity is exposed to the outside of the disk drive device 400. The exposed end of the flexible substrate is connected to a predetermined terminal of an electronic component housed in the housing 100.

  The vehicle-mounted device 1 of the present embodiment is generally configured as described above, but further includes a characteristic configuration. The configuration will be described below.

  As described above, the vehicle-mounted device 1 includes the cooling fan unit 2. The cooling fan unit 2 generates vibration because the propeller rotates. The generated vibration causes damage to the housing 100 and also causes noise. Therefore, it is necessary to prevent the vibration from being transmitted to the casing 100 of the vehicle-mounted device 1.

  In the conventional technology, a vibration damping function is realized by sandwiching a vibration damping member in a coupling portion between the cooling fan unit 2 and the housing 100. In this case, for example, the damping member is often made of a material such as urethane.

  In general, such a damping member has lower rigidity than the outer frame part 3 of the cooling fan unit and the mounting portion of the housing 100 in order to absorb vibration. Further, the vibration damping member often has a surface frictional force larger than that of the outer frame part 3 of the cooling fan unit and the fan mounting portion 14 of the housing 100, and therefore, when the vibration damping member is assembled at a predetermined position, The member is caught by surrounding members, and it is difficult to assemble the member at a predetermined position accurately. Therefore, the skill of the operator is required for assembly. Further, in order to ensure quality, it is also necessary to inspect whether or not the vibration damping member and the cooling fan unit 2 are successfully assembled.

  Therefore, in the vehicle-mounted device 1 of the present embodiment, a mechanism for easily performing such attachment work and confirmation work is provided.

  Specifically, as shown in FIGS. 4 and 5, the outer frame part 3 of the cooling fan unit 2 has a flat rectangular parallelepiped shape and includes an opening 11 that is, for example, a cylindrical hole. The opening 11 takes in the direction in which the air is generated by the fan to the outside of the housing 100 of the vehicle-mounted device 1 or the air outside the vehicle-mounted device 1 into the housing 100 of the vehicle-mounted device 1. Open in the direction. A propeller and a driving device such as a motor for rotating the propeller are attached to the opening 11.

  The outer frame part 3 of the cooling fan unit 2 includes a high-rigidity portion 10 made of resin or the like and low-rigidity portions 12a to 12d (hereinafter referred to as 12a to 12d) having portions protruding outward from the high-rigidity portion 10. Are indicated as low-rigidity portions 12).

  For example, the high-rigidity portion 10 is made of the outer frame part 3 with a resin or the like having a rigidity that can secure the rigidity necessary for maintaining the shape of the outer frame part 3 of the cooling fan unit 2 (that is, the rigidity is high). It is configured as a main body.

  The low-rigidity portion 12 is made of thermoplastic elastomer, chlorinated butyl rubber, or the like that is relatively less rigid than the high-rigidity portion 10. Due to the low-rigidity portion 12, the vibration damping performance of the cooling fan unit 2 is ensured. The low-rigidity portion 12 may be any material that can absorb the vibration of the cooling fan unit 2. For example, the low-rigidity portion 12 is made of various types of elastomers such as a styrene thermoplastic elastomer, a urethane thermoplastic elastomer, or a vinyl chloride thermoplastic elastomer. There may be.

  As shown in FIGS. 4, 5A and 5B, the low-rigidity portions 12a to 12d constitute portions that occupy predetermined volumes at the four corners of the housing 3, respectively. In order to avoid direct contact with the mounting portion 14 of the casing 100 of the container 1, an outer shape that protrudes more outward than the high-rigidity portion 10 is provided. That is, the low-rigidity portion 12 is provided at a position where the low-rigidity portion 12 comes into contact with the housing 100 that is a device to which the cooling fan unit 2 is attached.

  Moreover, attachment holes 13a to 13d for attachment to the housing 100 of the vehicle-mounted device 1 are provided in the low rigidity portions 12a to 12d, respectively. The attachment holes 13 a to 13 d are penetrated by screws or the like, and the screws are fixed to predetermined attachment holes (not shown) of the housing 100. Thereby, the outer frame part 3 of the cooling fan unit 2 is attached to the housing 100.

  Moreover, the low-rigidity part 12 is arrange | positioned at the four corners of the outer frame component 3, as shown in Fig.5 (a) and FIG.5 (b), and has a substantially triangular prism shape. In the present embodiment, the low-rigidity portion 12 and the high-rigidity portion 10 are integrally molded. However, the present invention is not limited to this, and after molding each according to the shape of the outer frame part 3 and the like. It may be bonded.

  As shown in FIG. 5A, the outer frame component 3 of the cooling fan unit 2 is such that the attachment portion 14 of the housing 100 and the low-rigidity portion 12 are in direct contact with each other and the attachment portion 14 of the housing 100 is high. It is attached so that it does not come into direct contact with the rigid portion 10. That is, the gap 15 can be provided between the attachment portion 14 of the housing 100 and the high-rigidity portion 10. Due to the gap 15, the high-rigidity portion 10 and the housing 100 are not in direct contact. Therefore, the outer frame part 3 in the present embodiment is difficult to transmit vibration to the housing 100.

  By doing in this way, in order to check that the vibration control structure is realized in the assembled state of the vehicle-mounted device 1, it is necessary to confirm that the cooling fan unit 2 is stuck in the housing 100. It ’s enough. That is, since the damping member is coupled to the outer frame part 3 of the cooling unit 2, it is easier to attach than the independent parts and the inspection can be easily performed, so that workability is improved.

  The shape of the outer frame part 3 of the cooling fan unit 2 is not limited to the above-described shape, and the shape in which the high-rigidity portion 10 is in contact with the housing 100 by the low-rigidity portion 12 without directly contacting the housing 100. I just need it. For example, the low rigidity portion 12 may be provided only at two corners on the diagonal line of the outer frame component 3. In that case, the shape may be such that the high-rigidity portion 10 does not directly contact the housing 100.

  A part of the assembly process of the vehicle-mounted device 1 to which the cooling fan unit 2 is assembled will be shown below.

  First, the outer frame component 3 of the cooling fan unit 2 to which a propeller, a motor, and the like are attached is fitted into the attachment portion 14 at a predetermined position on the back surface 402 of the housing 100 in which the electronic device is assembled.

  Next, the outer frame part 3 is fixed to the housing 100 with screws.

  Finally, the close contact state between the low rigidity portion 12 of the outer frame part 3 and the attachment portion 14 of the housing 100 is confirmed from the opening 403.

  The embodiment of the present invention has been described above.

  According to the above embodiment, the mounting operation and the confirmation thereof can be easily performed while realizing the vibration damping mechanism of the cooling fan unit 2.

  The present invention is not limited to the above embodiment.

  For example, in the low-rigidity portion 12 of FIG. 4, the portion that contacts the housing 100 may be formed of the material of the low-rigidity portion 12. For example, the outer frame part 3 is shown in FIGS. 6 and 7. Such a shape may be used.

  FIG. 6 is a perspective view showing a modified example of the outer frame part 3.

  The outer frame component 103 illustrated in FIG. 6 has a flat rectangular parallelepiped shape, and includes an opening 111 that is, for example, a cylindrical hole. The opening 111 takes in the direction in which the air is generated by the fan to the outside of the housing 100 of the vehicle-mounted device 1 or the air outside the vehicle-mounted device 1 into the housing 100 of the vehicle-mounted device 1. Open in the direction. A propeller and a driving device such as a motor for rotating the propeller are attached to the opening 111.

  The outer frame component 103 includes a high-rigidity portion 110 made of resin and the like, and low-rigidity portions 112a to 112d having portions protruding outward from the high-rigidity portion 110 (hereinafter, when 112a to 112d are collectively referred to) , Shown as a low-rigidity portion 112).

  For example, the high-rigidity part 110 is provided with a rigidity that can secure the rigidity necessary for maintaining the shape of the outer frame part 103 of the cooling fan unit 2 (that is, the outer frame part 103 is made of a resin having high rigidity). It is configured as a main body.

  The low-rigidity portion 112 is made of a thermoplastic elastomer, chlorinated butyl rubber, or the like that is relatively less rigid than the high-rigidity portion 110. Due to the low-rigidity portion 112, vibration damping performance of the cooling fan unit 2 is ensured. The low-rigidity portion 112 may be any material that can absorb the vibration of the cooling fan unit 2. For example, the low-rigidity portion 112 is made of various elastomers such as a styrene-based thermoplastic elastomer, a urethane-based thermoplastic elastomer, or a vinyl chloride-based thermoplastic elastomer. There may be.

  As shown in FIG. 6, each of the low-rigidity portions 112 a to 112 d has an outer shape that protrudes outward from the four sides of the outer frame component 103, and avoids direct contact between the high-rigidity portion 110 and the housing 100 of the vehicle-mounted device 1. be able to.

  In addition, attachment holes 113a to 113d for attachment to the housing 100 of the vehicle-mounted device 1 are provided in the low rigidity portions 112a to 112d, respectively. The attachment holes 113 a to 113 d are penetrated by screws or the like, and the screws are fixed to predetermined attachment holes (not shown) of the housing 100. Thereby, the outer frame component 103 of the cooling fan unit 2 is attached to the housing 100.

  Moreover, the low-rigidity part 112 is arrange | positioned at the four sides of the outer frame component 103, and has a substantially quadrangular prism shape as shown in FIG. In the present embodiment, the low-rigidity portion 112 and the high-rigidity portion 110 are integrally formed. However, the present invention is not limited to this, and after each is formed according to the shape of the outer frame component 103 and the like. It may be bonded.

  By doing in this way, the freedom degree of the process for formation of the outer frame component 103 can be raised.

  FIG. 7 is a perspective view showing a further modified example of the outer frame component 103.

  The outer frame component 203 illustrated in FIG. 7 has a flat rectangular parallelepiped shape, and includes an opening 211 that is, for example, a cylindrical hole. The opening 211 takes in the direction in which the air is generated by the fan to the outside of the housing 100 of the vehicle-mounted device 1 or the air outside the vehicle-mounted device 1 into the housing 100 of the vehicle-mounted device 1. Open in the direction. A propeller and a driving device such as a motor for rotating the propeller are attached to the opening 211.

  The outer frame part 203 includes a high-rigidity portion 210 made of resin or the like, and low-rigidity portions 212a to 212d having portions protruding outward from the high-rigidity portion 210 (hereinafter, 212a to 212d are collectively referred to) , Shown as a low-rigidity portion 212).

  For example, the high-rigidity portion 210 is provided with a rigidity sufficient to secure the rigidity necessary for maintaining the shape of the outer frame part 203 of the cooling fan unit 2 (that is, the resin has a high rigidity). It is configured as a main body.

  The low-rigidity portion 212 is made of a thermoplastic elastomer, chlorinated butyl rubber, or the like that is relatively less rigid than the high-rigidity portion 210. Due to the low-rigidity portion 212, vibration damping performance of the cooling fan unit 2 is ensured. The low-rigidity portion 212 may be any material that can absorb the vibration of the cooling fan unit 2. For example, the low-rigidity portion 212 is made of various elastomers such as a styrene thermoplastic elastomer, a urethane thermoplastic elastomer, or a vinyl chloride thermoplastic elastomer. There may be.

  As shown in FIG. 7, the low-rigidity parts 212 a to 212 d each have an outer shape that protrudes outward from the four sides of the outer frame part 203, and avoids direct contact between the high-rigidity part 210 and the housing 100 of the vehicle-mounted device 1. be able to.

  Moreover, attachment holes 213a to 213d for attachment to the housing 100 of the vehicle-mounted device 1 are provided in the low rigidity portions 212a to 212d, respectively. The attachment holes 213a to 213d are penetrated by screws or the like, and the screws are fixed to predetermined attachment holes (not shown) of the housing 100. Thereby, the outer frame part 203 of the cooling fan unit 2 is attached to the housing 100.

  Further, as shown in FIG. 7, the low-rigidity portion 212 is disposed on the four sides of the outer frame part 203 and has a substantially hemispherical shape having an arc in a direction toward the outer apex. In this embodiment, the low-rigidity part 212 and the high-rigidity part 210 are integrally formed. However, the present invention is not limited to this, and after each is formed according to the shape of the outer frame part 203 and the like. It may be bonded.

  By doing in this way, since the friction at the time of assembling the outer frame component 103 to the housing | casing 100 can be reduced, the ease of work can be improved.

DESCRIPTION OF SYMBOLS 1 ... Onboard equipment, 2 ... Cooling fan unit, 3 ... Outer frame component, 10 ... High-rigidity part, 11 ... Opening part, 12a-12d ... Low-rigidity part, 13a- 13d ... mounting hole, 14 ... mounting portion, 15 ... gap, 100 ... housing, 103 ... outer frame component, 110 ... high rigidity portion, 111 ... opening, 112a to 112d: low rigidity portion, 113a to 113d, mounting hole, 200 ... housing left side surface, 203 ... outer frame component, 210 ... high rigidity portion, 211 ... opening 212a to 212d, low rigidity portion, 213a to 213d, mounting hole, 250, right side surface of the housing, 300, top plate, 400, disk drive device, 401, housing. Front surface, 402... Rear surface of housing, 403... Opening

Claims (8)

Fan outer frame parts,
The damping member is integrally coupled to the outer peripheral portion of the main body having a hole in which the fan is installed.
Fan outer frame parts characterized by that. The fan outer frame component according to claim 1,
The vibration damping member is integrally formed with the main body.
Fan outer frame parts characterized by that. The fan outer frame component according to claim 1 or 2,
The vibration damping member protrudes to the outer peripheral side from the other part of the main body part,
An assembly product characterized by that. The fan outer frame component according to any one of claims 1 to 3,
The vibration damping member is provided at a position in contact with a device to which a fan is attached.
Fan outer frame parts characterized by that. The fan outer frame component according to claim 3,
The damping member protrudes in an arc shape on the outer peripheral side,
Fan outer frame parts characterized by that. The fan outer frame component according to any one of claims 1 to 5,
The vibration damping member is less rigid than the main body,
Fan outer frame parts characterized by that. The fan outer frame component according to any one of claims 1 to 5,
The main body is molded of resin,
The vibration damping member is a thermoplastic elastomer having a rigidity lower than that of the main body.
Fan outer frame parts characterized by that. The fan outer frame component according to any one of claims 1 to 5,
The vibration damping member is chlorinated butyl rubber having a lower rigidity than the main body.
Fan outer frame parts characterized by that.

Images