JPS64619Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a supporting and fixing structure for a contactor, etc. of a handler used for inspecting ICs, etc.

(Prior art) A method of supporting a contactor of a handler generally used for testing ICs, etc. is as follows.
As shown in FIG. 4, a method in which one end of a pair of contactors 10 is soldered to a printed circuit board 20, a method in which one end of the contactor is molded with resin,
Furthermore, various types of adhesives such as those directly bonded to resin are known.

However, in all of these, one end of each contactor (spring) is simply connected to the printed circuit board 20.
It is simply soldered or resin molded.

In addition, 30 in FIG. 4 is a cam whose tip end of the contactor presses and releases the sides of the pair of contactors 10 in order to clamp and release the lead frame 51 of the IC 50 at a preset timing. This cam is rotated by a predetermined drive source, and when the large diameter portion contacts and presses the left and right contactors, the tip of the contactor
is pressed and held, and when it rotates to the small diameter part, the pressure on the contactor is released and the holding of IC50 is released. And IC50 to this contactor 1
When the IC is held at 0, the quality of the IC is inspected.

(Problem that the invention attempts to solve) By the way, the quality inspection of such an IC takes 1 to 6 seconds/
It operates at full capacity throughout the day in one pitch. Furthermore, since the terminals of this IC are tilted and twisted, and are soldered and plated, they are not smooth and may be subject to excessive twisting or twisting force on the contactor that holds them. After operating 300,000 times, the contactor often broke at the base.

(Means for Solving the Problems) This invention was proposed to solve these conventional problems, and by reinforcing the strength of the fixed support part of the contactor, breakage at the base of the contactor can be prevented. The purpose is to prevent this and improve its lifespan.

That is, the gist of this invention is to provide the fixed support portion of the contactor with a stacked leaf spring support structure via an insulating material in order to disperse the stress when the contactor's biasing force is applied.

This invention will be explained below based on the attached drawings.

As shown in FIG. 1, a pair of through holes 2 are provided at predetermined positions of the substrate 2 at a predetermined interval.
1 is formed. The contactor 1 is inserted into the through-hole 21 so that the opposite end of the IC holding side passes through the predetermined dimension. It is necessary that the width (thickness) in the direction in which it swings in order to clamp and release the through-hole is smaller than the dimension in this direction of the through-hole. In the gap between the side surface of the contactor 1 in the biasing swing direction and the through hole 21, there is a pair of insulating material 4 such as Teflon (registered trademark), and a pair of leaf springs 5 on the outside thereof.
are inserted and fixed to the one end of the contactor 1 from both sides by wedges. However,
If a gap occurs in a direction perpendicular to the biasing swing direction, a filling material may be placed in this gap.

The other end (IC holding side end) of the contactor is used to sandwich a lead frame 51 formed protruding from the IC 50 as in the conventional contactor.
They are each bent inward (in the clamping direction) so that they can be easily clamped. In addition, 30 in FIG. 1 is similar to the conventional one, where a contactor sequentially holds and holds ICs 50 that are sequentially supplied to a handler for inspection.
This is the cam that controls the timing of release.

(Function) As mentioned above, connect the contactor (spring) to the insulation material 4.
Furthermore, as a result of being wedged and fixed to the through hole 21 of the board with a leaf spring on the outside, the IC50
The stress applied to the contactor during clamping is dispersed to the portion supported by the leaf spring 5, and is no longer concentrated at the root portion (fixed support portion) of the contactor 1 as in the conventional case.

(Embodiment) FIG. 2A shows a second embodiment of this invention.
Hereinafter, for convenience, only one of the pair of contactors 11 will be illustrated.

A through hole 2 is provided at a predetermined position of the substrate 22 made of resin.
3 is formed, and the end of the contactor 11 opposite to the IC holding end is loosely fitted into the through hole 23 so as to penetrate therethrough. Between the inner wall surface of the through hole 23 and the contactor 11, a plate spring 50 is attached to an insulating material 4 such as Teflon on both sides in the direction in which the contactor is urged to swing in order to clamp and release the IC.
The contactor is bonded or molded integrally with the resin substrate 22 with the contactor sandwiched therebetween.

Note that Teflon has a poor adhesion effect when used as an adhesive, so as shown in FIG.
holes 48 and 58 are formed at positions corresponding to 0, respectively;
The contactor 11 and the resin substrate may be bonded to each other only through this hole. Also, in the case of molding, if the holes 48 and 58 are formed in advance, the molding effect will be enhanced.

Next, FIG. 3 shows a third embodiment of this invention. A through hole 25 is provided at a predetermined position of the printed circuit board 24.
is formed, and the end of the contactor 11 opposite to the IC is inserted into the through hole 25 and penetrated therethrough.
The bottom portion 51a of a leaf spring 51 formed in an L-shape is attached and fixed to the printed circuit board 24 through an insulating material 41 such as Teflon in the front and rear directions of the contactor biasing swing direction. The back surface of the portion 51a is symmetrical to the front and rear surfaces of the contactor 11 in the swinging direction of the contactor.
It is adhesively fixed via the extension part of 1. In this case as well, the insulating material 41 is in direct contact with the contactor 11 and the substrate 24, but if this insulating material is Teflon, the adhesive effect is poor as described above. Therefore, in this case as well, the insulating material 41
It is only necessary to form a hole as shown in FIG. 2B, and directly bond the plate spring 51 and the contactor 11 and the plate spring 51 and the printed circuit board 24 through this hole.

(Effects of the invention) According to this invention, a pair of leaf springs are attached via an insulating material to the front and rear surfaces in the direction of biasing swing at the attachment part of the contactor to the circuit board, and the contactor is stacked on the leaf spring support mounting structure. Therefore, the contactor
The stress applied to the contactor during the biasing swing to clamp and release the IC is dispersed to the part supported by the stacked leaf springs, eliminating stress concentration on the part where the contactor is attached to the board as in the past. This eliminates the problem of premature breakage of the base of the contactor, and significantly extends the life of the contactor.

The contactor support structure according to this invention can be directly applied to a normal cantilever spring support structure.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a support and fixing structure for a handler contactor, etc. of this invention. FIG. 2A: A partial explanatory diagram showing a second embodiment of this invention. FIG. 2B: A side sectional view showing an example of parts used in the second embodiment. FIG. 3: A partial explanatory diagram showing a third embodiment of this invention. FIG. 4: An explanatory diagram showing a conventional support structure.

Claims (1)

[Scope of Claim for Utility Model Registration] A connector for a handler, etc., characterized in that a support part of a contactor inserted into a board is clamped and fixed with a plate spring via an insulating material in the direction of the biasing swing direction of the contactor. support structure.