JP2599839Y2 - Burn-in board - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a burn-in board used in a burn-in test for electric components.

[0002]

2. Description of the Related Art FIG. 3 shows the structure of a conventional burn-in board. In FIG. 3, 11 is a burn-in board on which a component 17 is mounted, 12 and 13 are reinforcing materials, 14 is a protection plate, 15 is a support, and 16 is a support plate. The components shown in FIG. 3 are metal except for the burn-in board 11.

FIG. 4 is a sectional view of FIG. In FIG. 4, reinforcing members 12 and 13 are fixed to both surfaces of the burn-in board 11 in order to prevent twisting and warping due to a change in ambient temperature during the test of the burn-in board. The protection plate 14 is fixed to the burn-in board 11 at one point by using a column 15, and the surroundings are pressed down by a support plate 16. Figure 3 shows the actual application 4-739.
It is technically the same as FIG. 1 described in the specification of No. 60.

[0004]

The burn-in board shown in FIG. 3 has a complicated structure and many members are used. Burn-in boards increase the board area to increase the number of electrical components to be tested at one time. On the other hand, if the area of the board is greatly increased, a complicated mechanism as shown in FIG. 3 is required to prevent twisting and warping due to a difference in coefficient of thermal expansion.

[0005] In this invention, the periphery of the burn-in board is fixed with a reinforcing frame, the protective plate is held in the reinforcing frame so that it can be inserted and withdrawn, and the burn-in board and the protective plate are connected by a support.
It is an object to provide a burn-in board having a simple configuration.

[0006]

In order to achieve this object, the present invention is to fix the burn-in board 1 around the periphery,
It has a reinforcing frame 2 forming a groove 2A facing the inner wall, a protective plate 3 entering the groove 2A of the reinforcing frame 2, and a support column 4 connected to the protective plate 3 substantially at the center of the burn-in board 1.

[0007]

Next, the structure of a burn-in board according to the present invention will be described with reference to FIG. FIG. 1A is a perspective view, and FIG. 1A is an exploded perspective view of FIG. 1A. 1 is a burn-in board, 2 is a reinforcing frame, 3 is a protection plate, and 4 is a support.

In FIG. 1, a plurality of IC sockets 1A are mounted on a burn-in board 1, and electric components to be tested are mounted on the IC socket 1A. Burn-in board 1
A tooth profile 1B is formed at one edge, and the electrical component is tested by a test device (not shown) via the tooth profile 1B.

In FIG. 1, the periphery of the burn-in board 1 is fixed to the reinforcing frame 2 with a plurality of screws 5A. Grooves 2A are formed on the inner wall of the reinforcing frame 2 so as to face each other. Steps are formed at both ends 3A of the protection plate 3. The step of the protection plate 3 is guided by the groove 2 </ b> A and is held by the protection plate 3. The support 4 is connected to the protection plate 3 at substantially the center of the burn-in board 1.

FIG. 2 is a side view of FIG. 1 and shows the coupling relationship between the groove 2A of the reinforcing frame 2 and the step of the protective plate 3. In FIG. 1 or FIG. 2, the burn-in board 1 and the reinforcing frame 2 are fixed with a plurality of screws even when the ambient temperature changes during the test. The low burn-in board 1 does not appear to be twisted or warped due to the difference in thermal expansion.

The protection plate 3 is fixed at one point by using a support 4 attached to the burn-in board 1. Since the protection plate 3 is inserted into the groove 2A of the reinforcing frame 2, the difference in thermal expansion between the protection plate 3 having a high thermal expansion coefficient and the burn-in board 1 having a low thermal expansion coefficient does not appear as a warp.

[0012]

[Effect of this invention] This invention fixes the periphery of the burn-in board with a reinforcement frame, and holds the protection plate so that it can be inserted into and removed from the reinforcement frame.
Since the burn-in board and the protection plate are connected by a support,
Prevent twisting and warping of the burn-in board,
A burn-in board having a large area and a simple configuration can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a burn-in board according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a configuration diagram of a conventional burn-in board.

FIG. 4 is a sectional view of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burn-in board 1A IC socket 1B Tooth profile part 2 Reinforcement frame 2A Groove 3 Protective plate 3A End part 4 Prop 5A Screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A burn-in board (1) is fixed around,
A reinforcing frame (2) that forms a groove (2A) facing the inner wall, a protective plate (3) that enters the groove (2A) of the reinforcing frame (2), and a protective plate almost at the center of the burn-in board (1) A burn-in board comprising a support (4) connected to (3).