JPH01185144A - Fixing bracket of axial fan - Google Patents

Abstract

PURPOSE:To absorb the vibration of an axial fan to prevent the generation of secondary noises, and at the same time, to facilitate its fixing to a mounting plate by forming a fan holding section and a fixing section together as a unit by means of a material with flexibility. CONSTITUTION:A ventilating hole 13-1a is formed on a box-like bottom to which one flange section 1-1a of an axial fan 1 is freely fitted, and a flexible fan holding section 13-1 provided with a triangular holding plate 13-1b on the end of each corner constituted of a side wall and a flexible fixing section 13-2 provided with a groove 13-2a having a width equivalent to the plate thickness of a mounting plate 2 on the cylindrical periphery having about the same internal diameter as that of the ventilating hole 13-1a are formed together as a unit. The axial fan 1 is held by the fan holding section 13-1, and is fixed to the mounting plate 2 through the groove 13-2a of the fixing section 13-2.

Description

[Detailed Description of the Invention] [Summary] Regarding the fixing bracket for an axial fan widely used in various electronic devices, this bracket sufficiently absorbs the vibration of the axial fan to prevent the generation of secondary noise, and also has a mounting plate. A flexible fan holder with ventilation holes formed in the box-shaped bottom where the flange of the axial fan can fit together, and clamping plates provided at each corner of the side wall. and a flexible fixing part having a groove having a width equal to the thickness of the mounting plate on the outer periphery of a cylinder having an inner diameter approximately equal to that of the ventilation hole, and the axial fan is held by the fan holding part, The fixing portion is configured to be fixed to the mounting plate by a liquid groove.

[Industrial application field]

The present invention relates to a bracket for fixing an axial fan widely used in various electronic devices.

Recently, in equipment such as computer systems, the printed board units and various parts that make up the equipment are mounted in high density, increasing the amount of heat generated. It is now necessary to attach an axial fan to the housing to exhaust internal hot air to the outside, while also sending cold air from the outside into the housing to cool the components of the equipment.

Therefore, there is a need for a new axial fan fixing bracket that can easily fix a plurality of axial fans anywhere in an equipment housing.

[Conventional technology]

The fixation method for axial fans that has been widely used in the past is the fourth method.
The frame shown in the figure is made of aluminum or synthetic resin, with square flanges 1-18 formed at both ends of the cylinder, a wind tunnel provided in the center, and fastening holes 1-1b provided near each corner of the flange 1-18. 1-1 and an impeller 1-2 directly connected to a motor (not shown), a ventilation hole 3- is provided in the center of the square thin plate shown in FIG.
A vibration damping plate 3 made of flexible synthetic rubber is attached, and a mounting plate 2 is attached to one side as shown in FIG. The hole 3-2 for tightening the vibration damping plate 3 faces and abuts against the ventilation hole 2-1 provided in the
and the fastening hole 1-1b of the flange portion 1-1a and the mounting plate 2.
The axial fan 1 is fixed to the mounting plate 2 by passing four bolts 4 through the mounting holes 2-2 and screwing nuts 5 into the ends thereof.

[Problem that the invention seeks to solve]

The problem with the conventional fixing method for axial fans explained above is that two thin damping plates are used to fix the axial fan to the mounting plate with four bolts, so the axial fan There are problems in that the vibrations of the fan are transmitted to the mounting plate on the equipment side, generating secondary noise, and that the fixing work requires a large number of man-hours, which increases the cost.

In view of the above-mentioned problems, the present invention provides a bracket for fixing an axial fan, which sufficiently absorbs the vibration of the axial fan to prevent the generation of secondary noise, and which can be easily fixed to a mounting plate. With the goal.

[Means for solving problems]

As shown in FIG. 1, the present invention provides ventilation holes 13-- in the box-shaped bottom surface where one flange portion 1-1a of the axial fan 1 is fitted.
1a, and is attached to a flexible fan holding part 13-1 having a triangular holding plate 13-1b on the end face of each corner made of a side wall, and a cylindrical outer periphery having an inner diameter approximately equal to that of the ventilation hole 13-1a. A flexible fixing part 13-2 having a groove 13-2a having a width equal to the thickness of the plate 2 is integrally molded, and the fan holding part 13-1 holds the axial fan 1 and fixes it. It is configured to be fixed to the mounting plate 2 through the groove 13-2a of the portion 13-2.

[For production]

In the present invention, one flange portion 1-1a of the axial fan 1
a fan holding part 13-1 having a triangular holding plate 13-1b on each corner end face formed of a box-shaped side wall that can play with each other;
A groove 13-2 a with a width equal to the thickness of the mounting plate 2 is formed on the outer circumference of the cylinder.
As shown in FIG. 2, one flange part 1-1a of the axial flow fan 1 is formed into a box-shaped fan holding part 13-2 by integrally molding the fixing part 13-2 with a flexible material. The axial fan 1 can be inserted into the flange part 13-1 and the four corners of the flange part 1-1a are held between the clamping plates 1a-i-b provided at each corner end face of the side wall and the bottom surface, so that the axial fan 1 is held. By inserting the other fixed part 13-2 into the ventilation hole of the mounting plate 2, the groove 13-2a provided in the fixed part 13-2 pinches the edge of the ventilation hole, so that the axial fan l is fixed. In addition, since a flexible member is interposed between the axial fan 1 and the mounting plate 2, vibrations of the axial fan 1 can be absorbed and secondary noise can be suppressed. becomes possible.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the drawings.

FIG. 1 shows a perspective view of a fixing bracket for an axial fan according to this embodiment, and its structure is shown in FIG.
One flange portion 1-1a formed on the frame 1-1 of
The fan holder has a box-like shape that can be played with each other, has a large-diameter ventilation hole 13-18 formed in the center of its bottom, and has a triangular holding plate 13-1b fixed to the end face of each corner of the four side walls. In step 3-1, a groove 13- is formed on the outer periphery of a cylinder having an inner diameter approximately equal to that of the ventilation hole 13-1a, with a width equal to the thickness of the mounting plate 2, and a bottom diameter having a depth approximately equal to the inner diameter of the ventilation hole of the mounting plate 20. 23
The fixing portion 13-2 having the following properties is provided on the bottom side and is molded from flexible synthetic rubber.

The method of fixing the axial fan using the bracket 13 is as shown in FIG. The flange portion 1-1a is held by the clamping plate 13-1b.
The axial fan 1 is held by holding the four corners of the axial flow fan 1, and the other fixed part 13-2 is inserted into the ventilation hole of the mounting plate 2, and the groove 13-2 is inserted into the ventilation hole of the mounting plate 2.
2 a is inserted into the edge of the ventilation hole.As a result, the fan holding part 13-1 that inserts and holds the flange part 1-1a of the axial fan l and the ventilation hole of the mounting plate 2 are inserted and fixed. Since both of the fixing parts 13-2 are flexible, it is easy to hold the axial fan 1 and fix it to the mounting plate 2. It is possible to absorb fan vibration and suppress secondary noise.

〔Effect of the invention〕

As explained above, the present invention has advantages such as being able to easily fix an axial fan with an extremely simple fixing bracket, as well as being able to absorb vibrations of the axial fan and suppress secondary noise. Therefore, it is possible to provide a fixing bracket for an axial fan that is highly flexible and economically effective.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a fixing bracket for an axial fan according to an embodiment of the present invention, FIG. 2 is a side sectional view showing a method for fixing an axial fan using the fixing bracket of the present embodiment, and FIG. FIG. 4 is a partially cutaway sectional view showing a conventional axial fan fixing structure, FIG. 4 is a perspective view showing the axial fan, and FIG. 5 is a perspective view showing a distribution plate. In the figure, 1 is an axial fan, 1-18 is a flange part, 2 is a mounting plate, 13 is a bracket, 13-1 is a fan holding part, 13-1a is a ventilation hole, 13-1b is a clamping plate, 1
3-2 indicates a fixed portion, and 13-2a indicates a groove. 7th grade aJll lost pu fJ+ = ik@i bonito dance q order Blalt begging tree 70 Fig. 1 Fig. 2 Fig. 3 Falcon's 9 self 7γ Shimashisu 41-ri-m Fig. 4 Fig. 5

Claims (1)

[Claims] A ventilation hole (13-1a) is formed in the box-shaped bottom surface where the flange portion (1-1a) of the axial fan (1) can play, and a clamping plate (13-1a) is formed at each corner of the side wall. -1b) and a flexible fan holding part (13-1) provided with the ventilation hole (13-1).
A flexible fixing part (13-2) with a groove (13-2a) having a width equal to the thickness of the mounting plate (2) is provided on the outer periphery of a cylinder having an inner diameter approximately equal to that of a), and the fan holding part (13-1) The axial fan (1)
and hold the groove (13-2a) of the fixed part (13-2).
A bracket for fixing an axial fan, characterized in that the bracket is configured to be fixed to the mounting plate (2) by.