JPH088566A - Fixture for heat radiating body - Google Patents

Abstract

PURPOSE:To only replace either a heat generating body or heat radiating body when either one of the bodies becomes defective by constituting a fixture for heat radiating body of a bow-like main body section and string and the main body section and string of elastic bodies. CONSTITUTION:A fixture 10 for fixing heat radiating body is constituted of a main body section 11 formed of such a metallic material as the spring steel, etc., or such a synthetic resin as the nylon, etc., having elasticity and a nylon string 12 which connects both end sections of the main body section 11. The main body section 11 is constituted in a bow-like state as a whole in such a state that heat radiating body retaining sections 14 and 14 are provided on its upper surface and side faces 16 and 16 are formed on the extensions of the sections 14 and 14 and, then both end sections of the side faces 16 and 16 are connected to each other through the elastic string 12. When either a heat generating body 93 or heating radiating body 90 becomes defective or is broken, the heat radiating body 90 can be easily separated from the heat generating body 93 due to the elasticity of the main body section 11 when an inward force is applied to one side face of the fixture 10 and the body 93 or 90 can replaced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an LSI having a high heat generation density such as a high speed drive microcomputer, a semiconductor element such as a medium capacity thyristor and a power transistor, a heat sink for cooling them, and a heat pipe. The present invention relates to a fixture for connecting and fixing a heat radiator.

[0002]

2. Description of the Related Art In recent electric and electronic parts, heat is generated mainly in semiconductor elements due to integration of elements, miniaturization of products, etc., which causes various problems such as product malfunction and element destruction. A heat radiator such as a heat sink is used to positively diffuse and release this heat. FIG. 8 shows an example of conventional means for adhering a heating element and a radiator. FIG. 8 shows a heating element 93.
A perspective view in which a radiator 90 such as a heat sink or a heat pipe is attached to a microcomputer of a ceramic package by a PGA (Pin Grid Array) is shown. In FIG. 8, the PG that becomes the heating element 93
Stacked heat sink on top of A microcomputer
90 is mounted, and the heat generating element 93 and the heat sink 90 are bonded by using an adhesive such as an epoxy resin.

[0003]

In the prior art described above, the semiconductor element such as a microcomputer as the heat generating element 93 and the heat radiating element 90 are adhered and fixed to each other with an adhesive.
When it is necessary to separate between 93 and the heat radiator 90, for example, replacement of the semiconductor element due to a failure of only the semiconductor element, conversely even if you want to replace only the heat radiator due to damage
Since the semiconductor element and the radiator are formed as a set of parts, it is necessary to replace both of them.

In the means for applying and fixing the adhesive, it is necessary to manage the resin and the adhesive, to perform operations such as application, and when the resin and the adhesive are used, some time is required until they are cured. The efficiency is low, the work is complicated, and the heat radiation effect is also effective because an adhesive agent or the like is interposed between the heat generating element 93 and the heat radiating element 90, which causes a loss in heat conduction between them. Heat dissipation is hindered.

Also, when mounting a semiconductor element on a printed wiring board, the height of the radiator 90 often hinders the mounting, and it is complicated to inspect each part after mounting the semiconductor element on the printed wiring board. Occurs.

The present invention has been made in view of the above problems, and even if a failure occurs in either the heat generating element 93 or the heat radiating element 90, one of the failed parts is not replaced without replacing both of them. Only the structure can be easily replaced,
The purpose is to simplify the work of fixing the heating element 93 and the radiator 90.

[0007]

In order to solve the above problems, according to the present invention, in a fixture for adhering a heat radiator to a heat generator, the fixture comprises an arcuate main body and a thread, each of the main body and the thread. Is a radiator fixing member composed of an elastic body.
$

The main body has a heat radiating body pressing portion and side surfaces arranged on extensions of both ends of the heat radiating body pressing portion, and elastic threads are arranged between the both side surfaces. The parts and threads may be made of elastic material. Further, the thread is composed of a piano wire and may be surrounded by an insulating tube.

[0009]

[Function] With the above configuration, the heating element 93 or the radiator 90
If either one of them fails or is damaged, applying heat to the side surface inward will allow the heat dissipation element to easily separate from the heat dissipation element due to the elasticity of the main body. Can be done. Therefore, there is no need for an adhesive that has been used in the past between the heat generating element and the heat radiating element, or a fixture with no versatility is required. Will be possible. It is also possible to newly add a heat radiator to the existing electronic component, and a heat radiator fixing tool with good versatility can be provided.

[0010]

FIG. 1 is a front view of a radiator fixing tool of the present invention. In FIG. 1, a radiator fixing member 10 includes a main body 11 made of a metal material such as spring steel or an elastic synthetic resin such as nylon, and an elastic material such as nylon thread connecting both ends of the main body 11. Composed of 12 threads. The main body 11
Is provided with a radiator pressing portion 14-14 on the upper surface, and a side surface 16-16 is arranged on this extension, and both end portions of this side surface 16-16 are
The elastic threads 12 are tied together to form a bow shape as a whole.

FIG. 2 is a view in which this fixing tool is attached to a radiator.
Shown in In FIG. 2, a heating element 93 is provided on the printed wiring board 20.
Is provided, and the radiator 90 is provided on the heating element 93. The heat radiating body holding portion 14-14 of the heat radiating body fixture 10 is in contact with the upper surface of the heat radiating body 90, and the side surface 16-16 of this extension is the heat radiating body.
90 extends in the lateral direction, and the lower ends of the respective side surfaces 16-16 are tied by elastic threads 12, which are
It is provided so as to be arranged in the space of the boundary surface between the printed wiring board 20 and the heating element 93.

In the above, when a force is applied inwardly to the side surfaces 16-16, the shape becomes as shown in FIG. 3, and since the main body portion 11 has elasticity as described above, when the inward force disappears, The original shape shown in 1 is restored.

In the above embodiment, the elastic yarn 12 may be a yarn made of a metal material such as a piano wire in addition to the yarn made of nylon or other insulating fiber material. Further, the elastic thread 12 is connected to both ends of the main body 11 by welding or caulking, and the connecting means for both is formed with a hole, for example, in the vicinity of both ends of the side surface 16-16, and is elastic in this hole. It may be fixed through the thread 12 or tied directly to the sides 16-16.

In the above embodiment, if the heating element 93, the radiator 90, and the radiator fixing tool 10 can be integrated in advance before the heating element 93 such as a semiconductor or a control element is attached to the printed wiring board 20, Although the radiator fixing tool 10 can be arranged near the center of the heating element 90 as shown in FIG. 4 and can be provided at any other position, the heat generating element already arranged and fixed on the printed wiring board 20. In the body 93, especially in an LSI having a large number of pins, the heat radiator
When attaching 0, the radiator fixing tool 10 may be arranged outside the radiator 90 as shown in FIG. In the above description, the number of the heating element fixtures 10 is not particularly limited, and if one or more heating element fixing tools 10 are provided, the heating element 93 and the radiator 90 can be easily bonded.

Further, in consideration of electrical insulation of the edge surface of the heating element 93, an insulating tube 18 made of glass fiber, rubber, synthetic resin or the like is provided around the elastic yarn 12 as shown in FIG. Alternatively, the beads shown in FIG. 7 may be provided. Further, in the radiator fixing tool 10, two radiator pressing portions 14-14 are provided, but the number can be appropriately changed to one or more according to the outer shape of the radiator 90 and the like.

[0016]

With the above structure, if either the conventional heat generating element 93 or the heat radiating element 90 fails or is damaged, the two must be replaced at the same time.
Only the damaged one needs to be replaced, and the heat contact surfaces of the heat generating element 93 and the heat radiating element 90 do not have an adhesive or the like between them, so the heat transfer efficiency between the two becomes good and the function of the heat radiating element becomes effective. work.

Further, in the case of using the heat dissipating body 90 having unevenness on the surface in consideration of heat dissipating property, the heat dissipating body pressing portion 14 can be embedded and fixed in the concavo-convex portion, especially the recessed portion, Both 90 and the radiator fixing tool 10 are not displaced even during use of the device, so that the heating element 92 and the radiator 90 can be reliably bonded to each other without using an adhesive.

[Brief description of drawings]

FIG. 1 is an embodiment of a radiator fixing tool of the present invention.

FIG. 2 is a diagram in which a radiator and a heating element are bonded by a radiator fixing tool of the present invention.

FIG. 3 is a diagram in which an elastic force is applied to the radiator fixing tool of the present invention.

FIG. 4 is a diagram showing a usage state of the radiator fixing tool of the present invention as viewed from above.

FIG. 5 is a diagram showing a usage state of the radiator fixing tool of the present invention as viewed from above.

FIG. 6 is a view showing an elastic thread covered with an insulating tube.

FIG. 7 is a view showing a thread covered with insulating beads.

FIG. 8 is a perspective view showing a connection between a conventional radiator and a heating element.

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. DESCRIPTION OF SYMBOLS 10 Radiator fixing tool 11 Main body part 12 Elastic thread 14 Radiator pressing part 16 Side surface 90 Radiator 93 Heat generator

Claims (3)

[Claims] 1. A fixture for adhering a heat radiator to a heat generator, wherein the fixture comprises an arcuate main body and a thread,
A radiator fixing tool in which the main body and the thread are made of an elastic body. 2. A fixture for adhering a radiator to a heating element, which has an arcuate main body portion having a radiator pressing portion and side surfaces arranged on extensions of both ends of the radiator pressing portion, A radiator fixing tool in which a thread is disposed between the both side surfaces, and the main body and the thread are made of an elastic material. 3. The radiator fixing tool according to claim 1, wherein the thread is composed of a piano wire and is surrounded by an insulating tube.