JP3442302B2 - Electronic component cooling structure and electronic device using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component cooling structure for stably and securely fixing an electronic component to a metal case that also serves as a radiator without screwing the electronic component, and an electronic device using the same. .

[0002]

2. Description of the Related Art In a conventional cooling structure for electronic parts, as described in JP-A-2-205058, a small radiator separate from a leaf spring is provided to radiate the electronic parts. A groove for inserting a leaf spring is provided on the side, one or more protrusions are provided on the leaf spring, and the spring pressure of the leaf spring is used to fix the electronic component.

[0003]

In the conventional device as described above, it is necessary to prepare a separate radiator, and in the structure in which the leaf spring is inserted into the groove, the leaf spring is not fixed. In a severe environment such as shock, vibration, etc., the leaf spring may be displaced, and in the worst case, it may come off and the electronic components may not be able to dissipate heat well.

According to the present invention, electronic components are directly fixed to a metal case that also serves as a radiator, thereby eliminating the need to individually prepare a small radiator as described above, and preventing the metal case from falling off. By fixing the cover with
The purpose is to secure stable and reliable fixing of electronic components even under severe environment such as shock and vibration.

[0005]

FIG. 1 is an explanatory view of a cooling structure for electronic parts according to the present invention. In FIG. 1, 1 is a metal case,
Reference numeral 2 is a cover, 3a and 3b are electronic components, and 4 is a fixture. The present invention is configured as follows to solve the above problems.

(1): A metal case 1 for storing parts,
The wall of the metal case 1 and the electronic components 3a and 3b are elastically sandwiched so that the electronic components 3a and 3b are sandwiched by the metal case 1.
A fixing member 4 for fixing the electronic component to the inner wall, a groove formed in a wall of the metal case into which one leg of the fixing member elastically sandwiches the electronic component, and a position for positioning the electronic component.
A stepped guide provided on the wall of the metal case, and the fixture 4
And a cover 2 of the metal case 1 for preventing the metal case 1 from falling off.

(2): In the electronic component cooling structure of (1), two or more electronic components 3a and 3b arranged are fixed by one fixing tool 4.

(3): Metal case 1 of electronic equipment for housing parts, wall of the metal case 1 and electronic parts 3a, 3b
To the inner wall of the metal case 1 by elastically sandwiching the electronic component 3a and 3b, and on the wall of the metal case into which one leg of the fixture elastically sandwiching the electronic component is inserted. Position the groove provided and the electronic component
And a cover 2 of the metal case 1 for preventing the fixing tool 4 from falling off.

(4): In the electronic device of (3) above,
The electronic components 3a and 3b arranged in two or more are fixed by the single fixture 4.

(Operation) Since this structure is configured as described above, it has the following functions. The electronic component 3 is formed by elastically sandwiching the wall of the metal case 1 for accommodating the component with the fixture 4 and the electronic components 3a and 3b.
a and 3b are fixed to the inner wall of the metal case 1, and the metal
The electronic parts 3a and 3b are mounted in grooves formed in the wall of the case 1.
The foot on one side of the fixing tool 4 that sexually sandwiches is inserted,
The stepped guide provided on the wall of the metal case 1 is used for the electronic part.
The products 3a and 3b are positioned, and the cover 2 prevents the fixture 4 from falling off. For this reason, the electronic components 3a and 3b can be securely fixed without being damaged even in a severe environment such as impact or vibration.

Also, the electronic component 3 in which two or more are arranged
A and 3b are fixed with one fixing tool 4. For this reason,
Since the number of parts is reduced, the number of steps is reduced, and the shape is downsized, it is very economical and parts can be easily attached and detached.

[0012] fixed wall and the electronic component 3a of the fixture 4 metal case 1 of the electronic device for housing parts, the electronic component 3a sandwich the 3b elastically and 3b on the inner wall of the metal case 1, the metal The electronic part is provided in the groove provided in the wall of the case 1.
One side of the fixture 4 for elastically sandwiching the articles 3a, 3b
The stepped gusset on the wall of the metal case 1
The electronic parts 3a and 3b are positioned by the id, and the fixing tool 4 is prevented from falling off by the cover. Because of this, a shock,
It is possible to provide an electronic device that can be reliably fixed without damaging the electronic components even in a severe environment such as vibration.

The electronic component 3 in which two or more are arranged
A and 3b are fixed with one fixing tool 4. For this reason,
Since the number of parts is reduced, the number of steps is reduced, and the shape is downsized, it is possible to provide an electronic device which is very economical and in which parts can be easily attached and detached.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a cooling structure for an electronic component according to an embodiment of the present invention. In FIG.
The electronic component cooling structure is such that the electronic components 3 a and 3 b that generate heat by the fixture 4 are attached to the inner wall of the metal case 1 of the electronic device having the fins 13, and the fixture 4 is pressed by the stopper 21 of the cover 2. .

As the material of the metal case 1 of the electronic device, it is preferable to use a metal having a high thermal conductivity such as copper, aluminum or magnesium alloy so that the heat-generating electronic parts can be efficiently radiated, and molding and cutting are performed. The metal case 1 can be manufactured by such a method.

The fixture 4 may be made of resin or metal as long as it is an elastic member having a high yield point, but metal is preferable in consideration of heat resistance, and a material such as spring stainless or phosphor bronze is manufactured by a method such as sheet metal working. It is possible.

The electronic components 3a and 3b are electronic components such as ceramic absorbers that generate heat, and are fixed by a fixture 4 so as to be elastically pressed against the inner wall of the metal case 1. Thus, it is not necessary to prepare a separate radiator, and the electronic components 3a and 3b are stable without being screwed,
In addition, it can be securely fixed, and the number of parts, the number of steps, and the size can be reduced.

FIG. 2 is an exploded view of a cooling structure for electronic parts (1).
Is. In FIG. 2, the cooling structure for electronic components is provided with a metal case 1, a cover 2, electronic components 3a and 3b, and a fixture 4.

The metal case 1 has a guide 11 for facilitating the positioning of electronic components on the inner wall, an integrally formed groove 12 into which one side of the foot 41 of the fixture 4 is inserted, and fins 13 for radiating heat to the lower portion. Is provided. In addition, inside the metal case 1, for example, another electronic component (not shown) for a DC-DC converter or the like is arranged.

A stopper 21 is provided on the cover 2, and the cover 2 is attached to the metal case 1 to prevent the fixture 4 from coming off. Electronic parts 3a, 3b
Are positioned by a stepped guide 11 so as not to move, and the generated heat is transmitted through the outer wall of the metal case 1 and radiated from the fins 13 at the bottom.

Feet 41 are symmetrically arranged on the fixture 4 so as to sandwich the electronic components 3a and 3b. This foot 4
One side of 1 is in the center of the electronic components 3a, 3b, and the other side is in the groove 12 of the metal case 1. Then, the two electronic components 3a and 3b are fixed by the single fixture 4.

FIG. 3 is an exploded view of the cooling structure for electronic parts (2).
Is. 3 is an exploded view of the cooling structure of the electronic component when the fixture 4 is viewed from the opposite side of FIG. 2, and a positioning collar 42 is provided behind the fixture 4. For this reason,
When inserting the foot 41 on one side of the fixture 4 into the groove 12, the collar 4
2 is positioned by sandwiching the side wall 14 of the groove 12, and the legs 41 on the other side can easily hold down the central portions of the electronic components 3a and 3b.

To fix the electronic components 3a and 3b, one side of the foot 41 of the fixture 4 should be placed in the center of the electronic components 3a and 3b while the electronic components 3a and 3b are inserted into the guide 11 and positioned. Insert one side into groove 12. As a result, the electronic components 3a and 3b are pressed against the inner wall of the metal case 1, and the generated heat is transmitted through the outer wall of the metal case 1 and radiated from the fins 13 at the bottom. Further, by attaching the cover 2 to the metal case 1, the stopper 21 prevents the fixing tool 4 from coming off.

In the above embodiment, the electronic parts are
Although it has been described that the electronic components are individually fixed, the same operation can be performed even if the number of electronic components is one or three or more.

As described above, as described in the embodiment, it is not necessary to prepare a separate radiator, the electronic parts can be securely fixed without being screwed, and two or more electronic parts are provided. It is very economical because it can be installed in parallel with one fixture, reducing the number of parts, man-hours, and miniaturizing the shape. It is also easy to attach and detach parts, and environmentally friendly. is there.

[0026]

As described above, the present invention has the following effects. (1): The electronic component is fixed to the inner wall of the metal case by elastically sandwiching the electronic component with the wall of the metal case that stores the component with a fixture, and is placed in a groove provided in the wall of the metal case.
The foot on one side of the fixture that elastically sandwiches the electronic component
Step into the wall of the metal case with the stepped guide
Since the electronic component is positioned and the cover prevents the fixture from falling off, the electronic component can be securely fixed without damage even in a severe environment such as impact or vibration.

(2): Since two or more electronic components arranged are fixed by one fixture, the number of components is reduced, the number of steps is reduced, and the size is reduced, which is very economical. Desorption is also easy.

(3): The wall of the metal case of the electronic device and the electronic component are elastically sandwiched by the fixing tool to fix the electronic component to the inner wall of the metal case, and the electronic component is provided on the wall of the metal case.
Piece of the fixture for elastically sandwiching the electronic component in the groove
Steps on the side of the metal case that enter the side foot
Since the electronic component is positioned by the guide and the fixing tool is prevented from falling off by the cover, it is possible to provide an electronic device that can be securely fixed without damaging the electronic component even under a severe environment such as impact or vibration. .

(4): Electronic component 3a in which two or more are arranged,
Since 3b is fixed with one fixture, the number of parts is reduced,
Since the number of steps can be reduced and the shape can be reduced, it is possible to provide an electronic device which is very economical and in which parts can be easily attached and detached.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a cooling structure for an electronic component according to an embodiment.

FIG. 2 is an exploded view (1) of the cooling structure for the electronic component according to the embodiment.

FIG. 3 is an exploded view (2) of the electronic component cooling structure according to the embodiment.

[Explanation of symbols]

1 metal case 2 cover 3a, 3b Electronic parts 4 fixtures

Continuation of the front page (56) Reference JP-A-11-298177 (JP, A) JP-A-10-313184 (JP, A) JP-A-9-293981 (JP, A) JP-A-9-102682 (JP , A) Actual opening 1-165655 (JP, U) Actual opening 4-5685 (JP, U) Actual opening 4-131120 (JP, U) Actual opening 5-77989 (JP, U) Actual opening A 60-149186 (JP, U) Tokumei HEI 8-506933 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05K 7/20 H05K 7/12 H01L 23/40

Claims (4)

(57) [Claims] 1. A metal case for accommodating components, a fixture for elastically sandwiching a wall of the metal case and an electronic component to fix the electronic component to an inner wall of the metal case, and the electronic component elastically. A groove provided in the wall of the metal case into which one foot of the fixture to be inserted is inserted, and a groove provided in the wall of the metal case for positioning the electronic component
A cooling structure for an electronic component , comprising: a stepped guide; and a cover of the metal case that prevents the fixture from falling off. 2. The cooling structure for an electronic component according to claim 1, wherein two or more arranged electronic components are fixed by one fixing member. 3. A metal case of an electronic device for accommodating parts, a fixture for elastically sandwiching the wall of the metal case and the electronic part to fix the electronic part to the inner wall of the metal case, and the electronic part A groove provided in the wall of the metal case into which one leg of the fixture that elastically sandwiches fits, and a wall of the metal case that positions the electronic component
An electronic device comprising: a stepped guide; and a cover of the metal case that prevents the fixing tool from falling off. 4. The electronic device according to claim 3, wherein two or more arranged electronic components are fixed by one fixing member.