JP5154302B2 - Air cooler - Google Patents

Description

  The present invention relates to an air cooler for air-cooling an electronic device, for example, and more particularly to a structure for attaching a blower to a protective cover thereof.

  Conventionally, as a structure for attaching a blower to a protective cover, for example, there is a structure disclosed in Patent Document 1. According to the technique of Patent Document 1, the blower has blades disposed in through holes formed in the frame. Bolt holes are passed through the four corners of the frame. The blower mounting portion formed in the plate shape of the device has an air hole corresponding to the through hole of the blower and a positioning hole corresponding to the bolting hole. A blower is disposed behind the blower mounting portion, and a protective cover having a size corresponding to the air hole is disposed forward. Hooks are formed at the four corners of the protective cover, and these hooks pass through the corresponding bolt insertion holes through the corresponding bolting holes and engage the back side of the frame. Yes.

JP 2004-143983 A

  According to the technique of Patent Document 1, positioning and holding of the protective cover, the blower, and the blower mounting portion can be performed by a single operation. However, there are dimensional tolerances in the hook portions and bolt fastening holes, and the dimensional tolerances are often large. In that case, the blower is not fixed, and for example, it may vibrate laterally and generate noise.

  An object of this invention is to provide the air cooler which can be attached in the state which reduced the vibration of the air blower significantly.

  The air cooler of one embodiment of the present invention has a blowing means. The air blowing means includes a frame, and the frame has a first through hole. A wing is provided in the first through hole. This wing is driven by, for example, a motor and blows air in the direction of penetration of the first through hole. The protective cover has a second through hole substantially coinciding with the first through hole. A finger protector is provided in the second through hole. The frame is arranged on the surface around the second through hole in a state where the first and second through holes are made to coincide. A plurality of pressing portions are provided integrally with the protective cover on the surface of the protective cover. These pressing portions are located on both outer sides of the frame body, have engaging claws at the tips, the engaging claws engage the back surface of the frame body, and press the frame body to the protective cover side. doing. A flexible portion provided integrally with the protective cover is in contact with the blowing means and presses the blowing means.

  When configured in this way, due to dimensional tolerances when attaching to the protective cover of the frame of the blower, even if a gap occurs, the pressing portion and the protrusion press the frame from both sides. Even if the blades are rotated, vibration of the blower can be suppressed. In addition, since the pressing portion and the flexible portion are integrally provided on the protective cover, it is not necessary to prepare a separate vibration prevention component or attach this component.

Furthermore, the said ventilation means has a bridge part extended in the 1st through-hole from the said frame, and fixing the said wing | blade . The flexible portion is formed in a cantilever shape extending into the second through hole, and a convex portion provided at the tip thereof so as to protrude toward the air blowing means presses the bridge portion. Thus, since the convex part which protruded in the ventilation means side presses the bridge part by the ventilation means side, it can suppress a vibration with sufficient balance.

  The protective cover, the pressing portion, the convex portion, and the flexible portion can be made of synthetic resin. If comprised in this way, a press part and a flexible part can be manufactured simultaneously with manufacture of a protective cover, and a man-hour and a number of parts do not increase.

  The frame can be positioned on the protective cover by providing a concave portion in the frame, providing a protrusion on the protective cover, and allowing the protrusion to enter the concave portion. If comprised in this way, positioning and fixation with a protective cover and a ventilation means can be performed simultaneously, and workability | operativity will improve.

  As described above, according to the present invention, the vibration of the blower can be reliably reduced by only a simple operation at low cost.

  The air cooler of one Embodiment of this invention has a ventilation means, for example, the air blower 2, as shown in FIG. The blower 2 includes a frame body 4. The frame body 4 is formed in, for example, a flat rectangular parallelepiped shape, and a circular through hole 6 is formed at the center thereof. A blade 8 is disposed in the through hole 6. As shown in FIG. 2, the blade 8 is positioned at the center of the through hole 6 by a plurality of, for example, four bridge portions 7 provided at a predetermined angle, for example, 90 ° intervals on one surface side of the through hole 6. And it is fixed. The wing 8 is rotated by a built-in motor (not shown) and blows air in the through-hole 6 through direction.

  The air cooler also has a protective cover 10 in addition to the blower 2. The protective cover 10 has a rectangular plate-like portion 12, and a through hole having a size corresponding to the through hole 6 of the blower 2, for example, an air hole 14, is formed at the center thereof. In the air hole 14, a plurality of, for example, eight ribs 18 extending radially from the small disk-like part 16 located at the center of the air hole 14 to the peripheral part of the air hole 14 are formed. In this embodiment, the ribs 18 are arranged so as to form an equal angle with the adjacent one, for example, 45 degrees. In order to prevent the fingers from coming into contact with the blades 8 through the air holes 14, a plurality of, for example, four arc-shaped portions 20 are formed between the ribs 18 at predetermined angles, for example, at intervals of 90 degrees as finger protectors. ing.

  Since the arc-shaped portions 22 are provided at intervals of 90 degrees, there are those in which the arc-shaped portions 20 are not formed between the adjacent ribs 18, but the two adjacent ribs 20 in which these arc-shaped portions 20 do not exist. A flexible portion, for example, a spring portion 22 is formed from one side to the other side. The spring part 22 is formed on the same circumference located on the same circumference as the arcuate part 20. The tip portions of the spring portions 22 are not connected to the ribs 18 and are formed in a cantilever shape. On one surface side of the tips of the spring portions 22, a convex portion 24 is formed so as to protrude from the one surface. The blower 2 is attached to the surface side on which the convex portions 24 are formed. The convex portions 24 come into contact with the bridge portions 7 and press the blower 2 to the side opposite to the protective cover 10. The protective cover 10 is made of, for example, a synthetic resin. Therefore, the spring portion 22 formed in a cantilever shape can be bent in the penetration direction of the air hole 14. Moreover, since the front-end | tip of the spring part 22 has opened the clearance gap between the ribs 18, die-cutting is easy.

  Positioning projections 28 are respectively formed at the four corners of the air hole 14 on one surface of the plate-like portion 12. Corresponding to these protrusions 28, the frame 4 of the blower 2 is also formed with recesses, for example, insertion holes 30 penetrating in the penetration direction of the through holes 6 at the four corners of the through holes 6. The frame body 4 is positioned with respect to the protective cover 10 by inserting the protrusions 28 into the insertion holes 30. The protective cover 10 is attached to a device (not shown), for example, a housing of an electric device. For this reason, the plate-like portion 12 is provided on both sides of the longitudinal edge of the surface of the plate-like portion 12 on the frame body 4 side. Rectangular wall portions 32, 32 are formed substantially perpendicularly to each other, and two strips 34 are formed in parallel on the outer surface side of these wall portions 32 at intervals.

  Further, plate-like bodies 36 and 36 are formed on the inner surface sides of these wall portions 32 and 32 so as to approach both side faces of the frame body 4.

  As described above, the frame body 4 is positioned on the plate-like portion 12 by inserting the protrusions 28 into the insertion holes 30, and a pressing portion 38 is provided to fix the frame body 4 in this positioned state. .

  The pressing part 38 is positioned so as to substantially contact both side surfaces of the frame body 4. The distance between the pressing portions 38 located on both sides of the frame body 4 is set somewhat shorter than the width dimension of the frame body 4. Each pressing portion 38 extends to the side opposite to the plate-like portion 12, and the tip thereof extends to the back side of the frame body 4, and the engaging claw 40 that engages with the back surface of the frame body 4 is formed at the tip. ing. These pressing portions 38 are formed of a synthetic resin integrally with the protective cover 10. Therefore, the pressing portion 38 has flexibility, and is somewhat bent in a state where the engaging claw 40 of each pressing portion 38 is engaged with the back surface of the frame body 4 as shown in FIG. The frame 4 is pressed against the protective cover 10 side. On the other hand, as described above, each convex portion 24 of the spring portion 22 on the protective cover 10 side presses the bridge portion 7 of the blower 2 on the side opposite to the protective cover 10. Thus, the frame body 4 is fixed from both sides by the engaging claw 40 and the convex portion 24. As a result, even if the blades 8 are rotated, the vibration of the housing 4 can be greatly reduced.

  In the above-described embodiment, the pressing portions 38 are provided on both sides of the frame body 4. However, the height of the plate-like portion 12 is longer than that in the above-described embodiment, and the pressing portions 38 are also provided above and below the frame body 4. If there are spaces for providing the pressing portions 38, the pressing portions 38 can also be provided in these spaces. In the above embodiment, the four pressing portions 38 are provided. However, the number of the pressing portions 38 can be arbitrarily changed, and at least one piece may be provided on both sides of the frame body 4. In the above embodiment, four spring portions 22 and four convex portions 24 are formed, but it is desirable to form three or more of these in consideration of balance, but the number is not necessarily limited. It is not a thing. The spring portion 22 is formed in an arc shape, but is not limited to this, and can be formed so as to cross the air hole 14, cut vertically, or cross diagonally. In the above embodiment, the insertion hole 30 penetrating in the penetrating direction of the through hole 6 is formed. However, the insertion hole 30 is not necessarily penetrated, and may be a recess into which the protrusion 28 can enter.

It is the assembly figure seen from one direction of the air cooler of one embodiment of the present invention. It is the assembly figure seen from the direction opposite to FIG. 1 of the air cooler of FIG. It is a top view of the air cooler of FIG.

Explanation of symbols

2 Blower (Blower means)
4 Frame 6 Through hole (first through hole)
8 Blade 10 Protective cover 14 Air hole (second through hole)
20 Finger protector (arc-shaped part)
38 Pressing member

Claims (3)

A blowing means provided with blades in the first through hole so as to blow in the direction of penetration of the first through hole in the frame having the first through hole;
The frame has a second through hole that substantially coincides with the first through hole, a finger protector is provided in the second through hole, and the frame body is in a state where the first and second through holes coincide with each other. A protective cover arranged on the surface around the through hole;
Provided integrally with the protective cover on the surface of the protective cover, are located on both outer sides of the frame, have engaging claws at the tips, and these engaging claws engage with the back of the frame. A plurality of pressing portions pressing the frame body toward the protective cover;
A flexible portion that is provided integrally with the protective cover, contacts the blowing means, and presses the blowing means;
Equipped,
The blowing means has a bridge portion that extends from the frame body into the first through hole and fixes the wing, and the flexible portion is formed in a cantilever shape extending into the second through hole, An air cooler in which a protruding portion provided at the tip thereof to protrude toward the blowing means presses the bridge portion . The air cooler according to claim 1 , wherein the protective cover, the pressing member, and the convex portion are made of synthetic resin.   2. The air cooler according to claim 1, wherein a concave portion is provided in the frame body, a protrusion is provided in the protective cover, and the protrusion is inserted into the concave portion, whereby the frame body is positioned on the protective cover. vessel.

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