Test seat

Abstract

The utility model relates to a test seat, which comprises a base, a fixed claw, a normally closed reset mechanism and an unlocking mechanism, the base is provided with a placing groove for placing a chip, a pin mounting lower plate is arranged in the placing groove, the two fixing claws are rotatably and symmetrically arranged on the base by taking the placing groove as the center, each fixing claw comprises a pressing arm and an operation end in contact with the unlocking mechanism, the middle section of the end part of the pressing arm is provided with a pressing plate groove, and a pressing plate is arranged in the pressing plate groove. The pressing plate comprises a bottom plate and a rotating arm located in the middle of the bottom plate, the end, close to the pressing arm, of the rotating arm is arc-shaped, the rotating arm is rotationally arranged in the pressing plate groove through a rotating shaft, and the rotating shaft of the rotating arm is parallel to the rotating shaft of the fixing claw. The beneficial effects of the utility model lie in that the conventional linear contact between the fixing claw and the chip is changed into the surface contact between the pressing plate and the chip, the contact area is increased, the chip can be effectively prevented from being crushed or linear indentations are prevented from appearing on the surface of the chip, and the pin mounting lower plate formed by integrated injection molding of the pin hole is adopted, so that the spring pin is more tightly mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a test socket. Background Art

[0002] A chip test socket is a key detection device for detecting chips before packaging. It is mainly used to verify the electrical performance of chips. Generally, it includes a base for placing chips, a PLC detection circuit board, a detection probe, and a pressing mechanism arranged on the base for pressing the chip to connect the chip, the PLC detection circuit board, and the detection probe.

[0003] The patent with the patent number 202321908406.0 discloses a chip test socket with a quick-clamping opening and closing claw, which includes: a base, on which a placement groove for placing chips is opened; at least one fixed claw rotatably arranged on the base, during the flipping process of the fixed claw, there are at least two actions. Action 1: The end of the fixed claw abuts against the edge of the fixed chip. Action 2: The end of the fixed claw is far away from the covering space of the chip circumference in the vertical direction so that the chip can be taken out; a normally closed reset mechanism, the normally closed reset mechanism includes an elastic member for the fixed claw to achieve Action 1, and an unlocking mechanism, the unlocking mechanism is used to change the elastic force of the elastic member so that the fixed claw achieves Action 2. The normally closed fixation of the chip relies on the elastic force of the elastic member, eliminating the traditional use of snap connection for locking, effectively improving the detection efficiency, and having a high matching degree during automation.

[0004] Those skilled in the art have found that when the fixed claw contacts the chip, due to structural reasons, the fixed claw and the chip are in line contact. When the chip is relatively thin, the problem that the fixed claw presses the chip and deforms it will occur. When the chip is relatively thick, although the problem of chip deformation will not occur, linear indentations will appear on the surface of the chip. Summary of the Utility Model

[0005] In view of the above problems existing in the prior art, the main purpose of the present utility model is to provide a test socket that will not press the chip and deform it, nor will it have linear indentations on the surface of the chip.

[0006] To achieve the above purpose, the technical solution adopted by the present utility model is: a test socket, including a base, fixed claws, a normally closed reset mechanism, and an unlocking mechanism; a placement groove for placing chips is provided on the base, and a needle hole integrally injection-molded needle mounting lower plate is arranged in the placement groove. Two fixed claws are symmetrically arranged on the base through a rotating shaft with the placement groove as the center. The fixed claw includes a pressing arm and an operating end in contact with the unlocking mechanism. A pressing plate groove is arranged in the middle of the end of the pressing arm. A pressing plate is rotatably arranged in the pressing plate groove. The pressing plate includes a bottom plate and a rotating arm located in the middle of the bottom plate. One end of the rotating arm close to the pressing arm is arc-shaped. The rotating arm is rotatably arranged in the pressing plate groove through a rotating shaft, and the rotating shaft of the rotating arm is arranged parallel to the rotating shaft of the fixed claw.

[0007] Furthermore, the rotating arm is inclined with the bottom plate as the reference plate in the direction of the pressing arm, and the arc-shaped end of the rotating arm extends out of the projection area above the bottom plate.

[0008] Furthermore, the length of the bottom plate of the pressing plate is greater than or equal to the width of the pressing arm and less than or equal to the width of the placement groove.

[0009] Furthermore, a shaft hole is provided through the rotating arm, and pressing shaft holes parallel to the fixing claw rotating shaft are provided through the ends of the pressing arms on both sides of the pressing plate groove. The rotating arm of the pressing plate and the pressing plate groove at the end of the pressing arm are rotationally connected by the shaft hole and the pressing shaft hole in cooperation with the rotating shaft.

[0010] Furthermore, the flipping process of the fixing claw has at least two actions.

[0011] Action 1: The bottom plate of the pressing plate of the fixing claw abuts against the edge of the fixed chip.

[0012] Action 2: The bottom plate of the pressing plate of the fixing claw is far away from the projection range of the chip circumference in the vertical direction so that the chip can be taken out.

[0013] The normally closed reset mechanism includes an elastic member connected to the unlocking mechanism, which is used to enable the fixing claw to perform Action 1.

[0014] The unlocking mechanism is linked with the operating end of the fixing claw and is used to change the elastic force of the elastic member so that the fixing claw can perform Action 2.

[0015] Furthermore, a resistance increasing structure is provided on one side of the bottom plate close to the placement groove.

[0016] Preferably, the resistance increasing structure is a grid groove provided on the bottom surface of the bottom plate.

[0017] Preferably, the resistance increasing structure is convex points arranged in a matrix on the bottom surface of the bottom plate.

[0018] Preferably, the resistance increasing structure is a flexible material layer provided on the bottom surface of the bottom plate.

[0019] Furthermore, the bottom plate is an L-shaped plate, and the bottom end of the rotating arm is connected to the horizontal plate of the L-shaped plate.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: changing the line contact between the fixing claw and the chip in the prior art to the surface contact between the pressing plate and the chip, increasing the contact area, effectively avoiding damaging the chip or leaving linear indentations on the chip surface, adopting a needle hole integrally injection molded needle mounting lower plate, and making the spring needle installation more compact. Description of the Drawings

[0021] Figure 1It is a three-dimensional view of the fixed claw in the present utility model;

[0022] Figure 2 It is a side view of the fixed claw in the present utility model;

[0023] Figure 3 It is a schematic diagram of the position of the fixed claw in the test socket in the present utility model.

[0024] Legend description: 1. Fixed claw; 2. Pressing arm; 21. Pressing plate; 2101. Bottom plate; 2102. Rotating arm; 3. Operating end; 4. Pressing plate groove; 5. Resistance increasing structure; 6. Needle mounting lower plate. Specific implementation manner

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Embodiment

[0026] As Figures 1 to 3 shown, a test socket includes a base, a fixed claw 1, a normally closed reset mechanism, and an unlocking mechanism; a placement groove for placing a chip is provided on the base, and a needle mounting lower plate 6 integrally injection-molded with a needle hole is provided in the placement groove. Two fixed claws 1 are symmetrically arranged on the base in a rotatable manner around the placement groove through a rotating shaft. The fixed claw 1 includes a pressing arm 2 and an operating end 3 in contact with the unlocking mechanism. A pressing plate groove 4 is provided in the middle of the end of the pressing arm 2. A pressing plate 21 is rotatably arranged in the pressing plate groove 4. The pressing plate 21 includes a bottom plate 2101 and a rotating arm 2102 located in the middle of the bottom plate 2101. One end of the rotating arm 2102 close to the pressing arm 2 is arc-shaped. The rotating arm 2102 is rotatably arranged in the pressing plate groove 4 through a rotating shaft, and the rotating shaft of the rotating arm 2102 is arranged parallel to the rotating shaft of the fixed claw 1.

[0027] Since the needle holes for installing the spring needles are integrally injection-molded simultaneously when the needle mounting lower plate 6 is injection-molded, the price of the mold-opening product is lower, effectively reducing the production cost.

[0028] The rotating arm 2102 is inclined from the bottom plate 2101 towards the pressing arm 2 with the bottom plate 2101 as the reference plate, and the arc-shaped end of the rotating arm 2102 extends out of the projection area above the bottom plate 2101.

[0029] The length of the bottom plate 2101 of the pressing plate 21 is greater than or equal to the width of the pressing arm 2 and less than or equal to the width of the placement groove.

[0030] A shaft hole is provided through the rotating arm 2102, and a pressing shaft hole parallel to the rotating shaft of the fixed claw 1 is provided through the ends of the pressing arms 2 on both sides of the pressing plate groove 4. The rotating arm 2102 of the pressing plate 21 and the pressing plate groove 4 at the end of the pressing arm 2 are rotationally connected by a rotating shaft through the shaft hole and the pressing shaft hole.

[0031] The flipping process of the fixed claw 1 has at least two actions.

[0032] Action 1: The bottom plate 2101 of the pressing plate 21 of the fixed claw 1 abuts against the edge of the fixed chip.

[0033] Action 2: The projection range of the pressing plate 2101 of the fixed claw 1 away from the peripheral side of the chip in the vertical direction is such that the chip can be taken out.

[0034] The normally closed reset mechanism includes an elastic member connected to the unlocking mechanism, which is used to enable the fixed claw 1 to perform Action 1.

[0035] The unlocking mechanism is linked to the operating end of the fixed claw 1 and is used to change the elastic force of the elastic member so that the fixed claw 1 can perform Action 2.

[0036] A resistance increasing structure 5 is provided on one side of the bottom plate 2101 close to the placement groove.

[0037] The resistance increasing structure 5 is a grid groove provided on the bottom surface of the bottom plate 2101, and the resistance increasing structure 5 is used to increase the friction force between the bottom plate 2101 of the pressing plate 21 and the chip.

[0038] By providing the pressing plate 21 at the end of the pressing arm 2 of the fixed claw 1, the line contact between the fixed claw 1 and the chip in the prior art is changed to the surface contact between the pressing plate 21 and the chip, increasing the contact area and effectively avoiding damaging the chip or leaving linear indentations on the surface of the chip.

[0039] Since the arc-shaped end of the rotating arm 2102 extends out of the projection area above the bottom plate 2101, the center of gravity of the pressing plate 21 and the perpendicular line of the rotating shaft of the pressing plate 21 are not on the same straight line. Therefore, under the action of gravity, the bottom plate 2101 of the pressing plate 21 will automatically deflect towards the direction of the fixed claw 1. Embodiment

[0040] As a preferred solution of the resistance increasing structure 5 in Embodiment 1, the resistance increasing structure 5 is a convex point arranged in a matrix on the bottom surface of the bottom plate 2101 or a flexible material layer provided on the bottom surface of the bottom plate 2101.

[0041] As Figure 3 shown, the bottom plate 2101 is an L-shaped plate, and the bottom end of the rotating arm 2102 is connected to the horizontal plate of the L-shaped plate.

[0042] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test socket, comprising a base, a fixing claw, a normally closed reset mechanism, and an unlocking mechanism; the base is provided with a placement slot for placing a chip, characterized in that: A needle-loading lower plate with a needle hole integrally injection-molded is provided in the placement groove, and two fixed claws are symmetrically arranged on the base rotatably through a rotating shaft with the placement groove as the center, and the fixed claw includes a pressing arm and an operating end in contact with the unlocking mechanism, and a pressing plate groove is provided in the middle section of the end of the pressing arm, and a pressing plate is rotatably arranged in the pressing plate groove, and the pressing plate includes a bottom plate and a rotating arm located in the middle of the bottom plate, and the end of the rotating arm close to the pressing arm is arc-shaped, and the rotating arm is rotatably arranged in the pressure plate groove through a rotating shaft, and the rotating shaft of the rotating arm is arranged parallel to the rotating shaft of the fixed claw.

2. The test socket according to claim 1, characterized in that: The rotating arm is inclined from the bottom plate to the pressing arm with the bottom plate as the reference plate, and the arc-shaped end of the rotating arm extends out of the projection area above the bottom plate.

3. The test socket according to claim 1, characterized in that: The length range of the bottom plate of the pressing plate is greater than or equal to the width of the pressing arm and less than or equal to the width of the placement groove.

4. The test socket according to claim 1, characterized in that: The rotating arm is provided with an axial hole, and the ends of the pressing arms on both sides of the pressure plate groove are provided with pressing shaft holes parallel to the rotating shaft of the fixed claw. The rotating arm of the pressing plate and the pressure plate groove at the end of the pressing arm are rotatably connected through the axial hole and the pressing shaft hole with the rotating shaft.

5. The test socket according to claim 1, characterized in that: The flipping process of the fixed claw has at least two actions. Action 1: the pressing plate bottom plate of the fixing claw abuts against the edge of the fixed chip; Action 2: the bottom plate of the pressing plate of the fixing claw is away from the vertical projection range of the peripheral side of the chip so that the chip can be taken out; The normally closed reset mechanism includes an elastic member connected to the unlocking mechanism, which is used to enable the fixed claw to achieve action one. The unlocking mechanism is linked with the operating end of the fixing claw to change the elastic force of the elastic member so that the fixing claw performs the second action.

6. The test socket according to any one of claims 1 to 5, characterized in that: A resistance increasing structure is provided on one side of the bottom plate close to the placement groove.

7. The test socket according to claim 6, characterized in that: The resistance increasing structure is a grille groove arranged on the bottom surface of the base plate.

8. The test socket according to claim 6, characterized in that: The resistance-increasing structures are convex points arranged in a matrix on the bottom surface of the base plate.

9. The test socket according to claim 6, characterized in that: The resistance increasing structure is a flexible material layer arranged on the bottom surface of the base plate.

10. The test socket according to claim 1, characterized in that: The bottom plate is an L-shaped plate, and the bottom end of the rotating arm is connected to the horizontal plate of the L-shaped plate.

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