JP2006002707A - Mounting structure for fan motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for a fan motor capable of reducing resonance noise due to rotation drive of the fan motor, reducing noise of apparatus having the fan motor installed thereon, and reducing noise without requiring additional parts. <P>SOLUTION: In the mounting structure for the fan motor attaching the fan motor 2 on a rear panel 1, two roughly semispherical projections 3, 3 are provided on a section of a roughly center part of the fan motor 2 facing a section of the rear panel 1 on which the fan motor 2 is mounted, tips of the two projections 3, 3 abut on a bottom surface of the fan motor 2 when the fan motor 2 is mounted on the rear panel 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fan motor mounting structure in which a fan motor is mounted on a rear panel.

  Conventionally, this type of fan motor mounting structure is such that the fan motor is mounted on the rear panel with screws while the bottom surface of the fan motor is in contact with the back surface of the rear panel. For this reason, there has been a problem that the vibration of the fan motor is directly transmitted to the rear panel to produce a resonance sound, and noise other than the rotation sound of the fan motor is generated.

  The first prior art is shown in FIGS. As shown in FIGS. 7 and 8, a plurality of heat radiation fins 102A, 102a, and 102b are formed on the heat sink 102 that is brought into contact with the electronic component, and at least one of the heat radiation fins 102A, 102a, and 102b is formed. A pair of radiating fins 102a and 102a are formed in parallel to each other, and a motor 103 that rotationally drives a fan 103a for air-cooling electronic components is inserted into a groove 102c that is formed by both radiating fins 102a and 102a. Are fitted in the length direction of the groove 102c, and both the radiation fins 102a and 102a are formed with motor body receiving portions 102d for receiving the motor 103 fitted in the groove 102c, and the radiation fins 102a and 102a. A printed circuit board 104 with the terminal 103b of the motor 103 connected to the upper end of the Is, in the printed circuit board 104, the pressing protrusions 104b which hold the motor 103 with the motor body receiving portion 102d is fitted into the groove 102 is formed. (For example, refer to Patent Document 1).

  However, this does not reduce the generation of resonance noise associated with the rotation drive of the motor 103.

  A second prior art is shown in FIG. As shown in FIG. 9, this is formed in a box shape made of sheet metal, and the cooling fan 203 is housed and held in a holder 204 having an opening on one side and an intake port on the other side. One end of the opening of the holder 204 is formed with an outwardly extending locking claw 204e and a positioning portion 204f, and the other end is fixed with a slit (not shown) and a screw hole (not shown). A portion (not shown) extends outward. A circular exhaust port 202 is provided in the casing of the device, and a locking portion 205 and a positioning projection 206 corresponding to the locking claw 204e and the positioning portion 204f are provided on one side of the exhaust port 202, On the other side, an L-shaped locking claw that engages with the slit is erected, and a screw insertion hole corresponding to the screw hole is formed. (For example, refer to Patent Document 2).

However, this also does not reduce the resonance noise that accompanies the driving of the cooling fan.
JP-A-9-116061 JP-A-8-228086

  The present invention has been made in view of the above-described conventional problems, and can reduce the resonance sound caused by the rotational drive of the fan motor, and can reduce the noise in the equipment equipped with the fan motor. The object is to provide a fan motor mounting structure that can reduce noise without the need for parts.

  The present invention has been proposed to solve the above problems, and the invention according to claim 1 is a fan motor mounting structure in which a fan motor is mounted on a rear panel, and the fan motor in the rear panel is provided. Two substantially hemispherical projections are provided at locations substantially opposite the center of the fan motor where the motor is mounted, and when the fan motor is mounted on the rear panel, the tips of the two projections touch the bottom surface of the fan motor. It is characterized by being configured to touch.

  According to a second aspect of the present invention, in the fan motor mounting structure in which the fan motor is mounted on the rear panel, one or more protrusions are provided on the rear surface of the rear panel or the bottom surface of the fan motor, When attached to the rear panel, the tip of the protrusion is configured to contact the lower surface of the fan motor or the bottom surface of the rear panel.

  According to a third aspect of the present invention, the protrusion is provided on the back side of the rear panel and is formed in a pyramid shape.

  According to a fourth aspect of the present invention, the protrusion is provided on the bottom side of the fan motor and is formed in a substantially hemispherical shape.

  According to a fifth aspect of the present invention, the protrusion is provided on the bottom side of the fan motor and is formed in a pyramid shape.

  According to the first aspect of the present invention, since the tips of the two substantially hemispherical protrusions provided on the rear panel are in contact with the substantially central portion of the bottom surface of the fan motor, the resonance sound due to the rotational drive of the fan motor is generated. It is possible to reduce the noise in a device equipped with a fan motor, and the noise can be reduced without the need for additional parts.

  According to the second aspect of the present invention, in the case where one or more protrusions are provided on the rear surface of the rear panel, the tips of the one or more protrusions abut against the bottom surface of the fan motor. Resonance noise caused by rotational drive can be reduced, noise in equipment equipped with a fan motor can be reduced, and noise can be reduced without the need for additional components. In addition, even if one or more protrusions are provided on the bottom surface of the fan motor, the tip of the one or more protrusions abuts the back surface of the rear panel, so that the resonance noise caused by the rotational drive of the fan motor is reduced. It can reduce noise in equipment equipped with a fan motor, and can reduce noise without the need for additional parts.

  According to the invention described in claim 3, since the sharp tip of the pyramidal projection provided on the rear surface side of the rear panel contacts the bottom surface of the fan motor, the contact area is small, and the fan motor is driven by rotation. Resonance noise can be further reduced, noise in equipment equipped with a fan motor can be reduced, and noise can be reduced without requiring additional parts.

  According to the fourth aspect of the present invention, the tip of the substantially hemispherical protrusion provided on the bottom surface of the fan motor comes into contact with the back surface of the rear panel, so that the resonance noise caused by the rotational drive of the fan motor can be reduced. , Noise in equipment equipped with a fan motor can be reduced, and noise can be reduced without the need for additional parts.

  According to the fifth aspect of the present invention, the sharp tip of the pyramidal projection provided on the bottom surface of the fan motor comes into contact with the rear surface of the rear panel, so that the contact area is small and the resonance due to the rotational drive of the fan motor is achieved. Sound can be reduced, noise in equipment equipped with a fan motor can be reduced, and noise can be reduced without the need for additional parts.

  Embodiments of a fan motor mounting structure according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a front view showing a fan motor mounting structure according to the first embodiment of the present invention, and FIG. 2 is a side view of the fan motor mounting structure.

  As shown in FIGS. 1 and 2, the fan motor mounting structure of the first embodiment has two substantially hemispherical shapes at a position substantially opposite to the center of the fan motor 2 where the fan motor 2 is mounted on the rear panel 1. Protrusions 3 and 3 are provided. When the fan motor 2 is attached with screws 4, the tips of the two protrusions 3 and 3 come into contact with the substantially central portion of the bottom surface of the fan motor 2. In FIGS. 1 and 2, reference numeral 5 denotes a blade of the fan motor 2.

  Therefore, according to the first embodiment, the tips of the two substantially hemispherical projections 3, 3 provided on the rear panel 1 come into contact with the substantially central portion of the bottom surface of the fan motor 2. Resonance noise due to rotational drive can be reduced, noise in equipment equipped with the fan motor 2 can be reduced, and noise can be reduced without requiring additional parts.

  FIG. 3 is a front view showing the fan motor mounting structure of the second embodiment.

  As shown in FIG. 3, the fan motor mounting structure of the second embodiment has two pyramidal protrusions 3A, 3A at a position substantially opposite to the center of the fan motor 2 where the fan motor 2 is mounted on the rear panel 1. Is provided. The acute-angled tips of the two protrusions 3A and 3A come into contact with the substantially central portion of the bottom surface of the fan motor when the fan motor 2 is attached with the screw 4.

  Therefore, according to the second embodiment, the sharp tips of the two pyramidal projections 3A and 3A provided on the rear panel 1 abut on the substantially central portion of the bottom surface of the fan motor 2, so that the fan motor 2 Resonance noise due to rotational drive can be further reduced, noise in equipment equipped with the fan motor 2 can be reduced, and noise can be reduced without requiring additional parts.

  FIG. 4 is a front view showing the fan motor mounting structure of the third embodiment, and FIG. 5 is a side view of the fan motor mounting structure.

  As shown in FIGS. 4 and 5, the fan motor mounting structure of the third embodiment is provided with two substantially hemispherical protrusions 3 </ b> B and 3 </ b> B at the substantially central portion of the bottom surface of the fan motor 2. The protrusions 3 </ b> B and 3 </ b> B are configured such that the fan motor 2 comes into contact with the rear surface of the rear panel 1 with screws 4.

  Therefore, according to the third embodiment, the two substantially hemispherical projections 3B and 3B at the substantially central portion of the bottom surface of the fan motor 2 are in contact with the back surface of the rear panel 1, so that the resonance due to the rotational drive of the fan motor 2 occurs. The sound can be reduced, the noise in the equipment equipped with the fan motor 2 can be reduced, and the noise can be reduced without requiring additional parts.

  FIG. 6 is a front view showing the fan motor mounting structure of the fourth embodiment.

  In the fan motor mounting structure of the fourth embodiment, as shown in FIG. 6, two pyramid-shaped protrusions 3C and 3C are provided at a substantially central portion of the bottom surface of the fan motor 2, and the pyramid-shaped protrusion 3C, 3C is configured such that the fan motor 2 comes into contact with the rear surface of the rear panel 1 with screws 4.

  Therefore, according to the fourth embodiment, the two pyramid-shaped protrusions 3C and 3C at the substantially central portion of the bottom surface of the fan motor 2 abut on the back surface of the rear panel 1, so that the fan motor fan motor 2 is driven by rotation. Resonance noise can be further reduced, noise in equipment equipped with the fan motor 2 can be reduced, and noise can be reduced without requiring additional parts.

  In the above-described embodiments, the case where there are two protrusions has been described. However, the present invention is not limited to this, and it is needless to say that one or three or more protrusions can be applied.

It is a front view which shows the attachment structure of the fan motor of 1st Embodiment of this invention. It is a side view of the mounting structure of the fan motor. It is a front view which shows the attachment structure of the fan motor of 2nd Embodiment. It is a front view which shows the attachment structure of the fan motor of 3rd Embodiment. It is a side view of the mounting structure of the fan motor. It is a front view which shows the attachment structure of the fan motor of 4th Embodiment. It is a disassembled perspective view which shows the conventional cooling device for electronic components. It is a perspective view of the cooling device. It is a disassembled perspective view which shows the conventional fan fixing device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rear panel 2 Fan motor 3 The substantially hemispherical protrusion 3A The pyramid-shaped protrusion 3B The substantially hemispherical protrusion 3C The pyramid-shaped protrusion 4 Screw 5 Blade

Claims (5)

In the fan motor mounting structure in which the fan motor is mounted on the rear panel, two substantially hemispherical protrusions are provided at positions opposite to the center of the fan motor where the fan motor is mounted on the rear panel. An attachment structure for a fan motor, wherein the two protrusions are in contact with the lower surface of the fan motor when the is attached to the rear panel. In the fan motor mounting structure in which the fan motor is attached to the rear panel, one or more protrusions are provided on the rear surface of the rear panel or the bottom surface of the fan motor, and the protrusion is provided when the fan motor is attached to the rear panel. The fan motor mounting structure is configured such that the front end of the fan abuts against the bottom surface of the fan motor or the bottom surface of the rear panel. The fan motor mounting structure according to claim 2, wherein the protrusion is provided on the rear surface side of the rear panel and is formed in a pyramid shape. The fan motor mounting structure according to claim 2, wherein the protrusion is provided on a bottom surface side of the fan motor and is formed in a substantially hemispherical shape. The fan motor mounting structure according to claim 2, wherein the protrusion is provided on a bottom surface side of the fan motor and is formed in a pyramid shape.

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