Test seat for solving chip surface indentation

Abstract

The utility model relates to a test seat for solving chip surface indentation. The test seat 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, the two fixing claws are rotatably and symmetrically arranged on the base through a rotating shaft by taking the placing groove as a center, each fixing claw comprises a pressing arm and an operating end in contact with the unlocking mechanism, the end part of each pressing arm is rotatably provided with a pressing plate through a rotating shaft, and the rotating shaft at the end part of each pressing arm is parallel to the rotating shaft of the corresponding fixing claw; the pressing plate comprises a bottom plate and side plates located on the two sides of the bottom plate, and the bottom plate is free in the axial direction around an end rotating shaft of the pressing arm with the side plates as rotating arms. The beneficial effects of the utility model lie in that the line contact between the fixing claw and the chip in the prior art is changed into the surface contact between the pressing plate and the chip, so that the contact area is increased, and the chip can be effectively prevented from being crushed or linear indentations are prevented from appearing on the surface of the chip.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a test socket for solving the surface indentation of chips. 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 opening and closing claws and quick clamping, which includes: a base, on which a placement groove for placing chips is opened; at least one fixed claw rotatably arranged on the base, the fixed claw has at least two actions during the flipping process. Action 1, the end of the fixed claw abuts against the edge of the fixed chip. Action 2, the end of the fixed claw moves 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 can achieve 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 higher 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 of the fixed claw deforming the chip 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 and deform the chip and will not 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 for solving the surface indentation of chips, 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 two fixed claws are symmetrically arranged on the base rotatably 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. The end of the pressing arm is rotatably provided with a pressing plate through a rotating shaft. The rotating shaft at the end of the pressing arm is parallel to the rotating shaft of the fixed claw. The pressing plate includes a bottom plate and side plates on both sides of the bottom plate. The bottom plate is axially free with the side plates as the rotating arms around the rotating shaft at the end of the pressing arm.

[0007] Further, one end of the side plate close to the pressing arm is set to be arc-shaped, and the side plate is inclined from the bottom plate towards the pressing arm with the bottom plate as the reference plate, and the arc-shaped end of the side plate extends out of the projection area above the bottom plate.

[0008] Further, deflection notches are provided on both sides of the end of the pressing arm, and the side plates on both sides of the bottom plate of the pressing plate are respectively located at the corresponding deflection notches, and the length of the pressing plate is greater than or equal to the width of the pressing arm.

[0009] Further, a shaft hole is provided through the side plate, a pressing shaft hole parallel to the fixed claw rotating shaft is provided through the end of the pressing arm, and the side plate of the pressing plate and the end of the pressing arm are rotationally connected by the shaft hole and the pressing shaft hole in a rotating shaft fit.

[0010] Further, a limiting structure is integrally formed at the end of the pressing arm, and the limiting structure is a convex strip provided on the side of the pressing shaft hole close to the pressing plate. A rotating concave surface is provided on the side of the convex strip close to the bottom plate and recessed towards the pressing arm body to avoid the movement path of the bottom plate, and a limiting plane for blocking the movement of the bottom plate is connected to the rotating concave surface.

[0011] Further, the flipping process of the fixed claw has at least two actions.

[0012] Action 1, the bottom plate of the pressing plate of the fixed claw abuts against the edge of the fixed chip.

[0013] Action 2, the bottom plate of the pressing plate of the fixed claw is far away from the projection range of the circumference of the chip in the vertical direction so that the chip can be taken out.

[0014] 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 1.

[0015] The unlocking mechanism is linked with the operating end of the fixed claw and is used to change the elastic force of the elastic member so that the fixed claw can achieve Action 2.

[0016] Further, a resistance increasing structure is provided on one side of the bottom plate close to the placement groove.

[0017] Preferably, the resistance increasing structure is a grid groove provided on the bottom surface of the bottom plate.

[0018] Preferably, the resistance increasing structure is convex points arranged in a matrix on the bottom surface of the bottom plate.

[0019] Preferably, the resistance increasing structure is a flexible material layer provided on the bottom surface of the bottom plate.

[0020] Compared with the prior art, the beneficial effect of the present utility model is that the line contact between the fixed claw and the chip in the prior art is changed to the surface contact between the pressing plate and the chip, increasing the contact area, and effectively avoiding damaging the chip or forming linear indentations on the surface of the chip. Brief Description of the Drawings

[0021] Figure 1 This is a schematic diagram of the position of the fixed claw in the test socket in the present utility model;

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

[0023] Figure 3 This is a three-dimensional schematic diagram of the fixed claw in the present utility model;

[0024] Figure 4 This is a schematic diagram of the resistance increasing structure of the fixed claw in the present utility model;

[0025] Figure 5 This is a cross-sectional view of the fixed claw in the present utility model.

[0026] Legend Explanation: 1. Fixed claw; 2. Pressing arm; 21. Pressing plate; 2101. Bottom plate; 2102. Side plate; 22. Deflection notch; 23. Limiting structure; 2301. Rib; 2302. Rotating concave surface; 2303. Limiting plane; 3. Operating end; 4. Resistance increasing structure. Detailed Description of the Preferred Embodiment

[0027] 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. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Embodiment

[0028] As Figures 1 to 5 shown, a test socket for solving the surface indentation of a chip includes a base, a fixed claw 1, a normally closed reset mechanism, and an unlocking mechanism; a placement groove for placing the chip is provided on the base, and two fixed claws 1 are symmetrically arranged on the base rotatably around a rotating shaft with the placement groove as the center. The fixed claw 1 includes a pressing arm 2 and an operating end 3 in contact with the unlocking mechanism. The end of the pressing arm 2 is rotatably provided with a pressing plate 21 through a rotating shaft. The rotating shaft at the end of the pressing arm 2 is parallel to the rotating shaft of the fixed claw 1. The pressing plate 21 includes a bottom plate 2101 and side plates 2102 located on both sides of the bottom plate 2101. The bottom plate 2101 is axially free around the rotating shaft at the end of the pressing arm 2 with the side plates 2102 as the rotating arms.

[0029] 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 forming linear indentations on the surface of the chip.

[0030] One end of the side plate 2102 close to the pressing arm 2 is set to be arc-shaped, and the side plate 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 side plate 2102 extends out of the projection area above the bottom plate 2101.

[0031] Since the arc-shaped end of the side plate 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 rotation axis 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.

[0032] A shaft hole is provided through the side plate 2102, and a pressing shaft hole parallel to the rotation shaft of the fixed claw 1 is provided through the end of the pressing arm 2. The side plate 2102 of the pressing plate 21 and the end of the pressing arm 2 are rotationally connected by a rotating shaft through the shaft hole and the pressing shaft hole.

[0033] The flipping process of the fixed claw 1 has at least two actions.

[0034] Action 1: The bottom plate 2101 of the pressing plate 21 of the fixed claw 1 abuts against the edge of the fixed chip.

[0035] Action 2: The bottom plate 2101 of the pressing plate 21 of the fixed claw 1 moves away from the projection range of the chip circumference in the vertical direction so that the chip can be taken out.

[0036] The normally closed reset mechanism includes an elastic member connected to the unlocking mechanism, which is used to make the fixed claw 1 achieve Action 1.

[0037] The unlocking mechanism is linked with the operating end 3 of the fixed claw 1 and is used to change the elastic force of the elastic member so that the fixed claw 1 achieves Action 2.

[0038] A resistance increasing structure 4 is provided on one side of the bottom plate 2101 close to the placement groove.

[0039] The resistance increasing structure 4 is a grid groove provided on the bottom surface of the bottom plate 2101, convex points arranged in a matrix, or a flexible material layer.

[0040] The resistance increasing structure 4 is used to increase the friction force between the bottom plate 2101 of the pressing plate 21 and the chip. Embodiment

[0041] As Figures 1 to 5 shown, as a preferred solution of Embodiment 1, deflection notches 22 are provided on both sides of the end of the pressing arm 2, and the side plates 2102 on both sides of the bottom plate 2101 of the pressing plate 21 are respectively located at the corresponding deflection notches 22, and the length of the pressing plate 21 is greater than or equal to the width of the pressing arm 2. Embodiment

[0042] As Figure 5 shown, as a preferred solution of Embodiment 1 or 2,

[0043] A limiting structure 23 is integrally formed at the end of the pressing arm 2. The limiting structure 23 is a rib 2301 disposed on the side of the pressing shaft hole close to the pressing plate 21. A rotating concave surface 2302 that is recessed toward the body of the pressing arm 2 for avoiding the movement path of the bottom plate 2101 is provided on the side of the rib 2301 close to the bottom plate 2101, and a limiting plane 2303 that is connected to the rotating concave surface 2302 and is used to block the movement of the bottom plate 2101.

[0044] The rotating concave surface 2302 is used to ensure the smooth rotation of the pressing plate 21 around the pressing shaft hole. When the bottom plate 2101 of the pressing plate 21 rotates downward to the rotating concave surface 2302, its movement path is within the concave area of the rotating concave surface 2302 and will not be blocked by the body of the pressing arm 21. The cooperation between the limiting plane 2303 and the plane of the bottom plate 2101 of the pressing plate 21 can limit the rotation range of the pressing plate 21. When the bottom plate 2101 of the pressing plate 21 rotates upward to be in contact with the limiting plane 2303, the pressing plate 21 is blocked by the limiting plane 2303 and stops rotating.

[0045] 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 make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test socket for solving the problem of chip surface indentation, 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 the chip, two fixing claws are rotatably arranged on the base through a rotating shaft with the placement slot as the center, and the fixing claws include a pressing arm and an operating end in contact with the unlocking mechanism, characterized in that: A pressing plate is provided at the end of the pressing arm through a rotating shaft, the rotating shaft at the end of the pressing arm is parallel to the rotating shaft of the fixed claw, the pressing plate includes a bottom plate and side plates located on both sides of the bottom plate, and the bottom plate is axially free around the rotating shaft at the end of the pressing arm with the side plates as rotating arms.

2. The test socket for solving chip surface indentation according to claim 1, characterized in that: The side plate is arranged in an arc shape at one end close to the pressing arm, and the side plate is inclined from the bottom plate toward the pressing arm with the bottom plate as the reference plate, and the arc-shaped end of the side plate extends out of the projection area above the bottom plate.

3. The test socket for solving chip surface indentation problem according to claim 1, characterized in that: Deflection notches are provided on both sides of the end of the pressing arm, and the side plates on both sides of the bottom plate of the pressing plate are respectively located at the corresponding deflection notches, and the length of the pressing plate is greater than or equal to the width of the pressing arm.

4. The test socket for solving chip surface indentation problem according to claim 1, characterized in that: The side plate is provided with an axial hole, the end of the pressing arm is provided with a pressing shaft hole parallel to the rotating shaft of the fixed claw, and the side plate of the pressing plate and the end of the pressing arm are rotatably connected with the rotating shaft through the axial hole and the pressing shaft hole.

5. The test socket for solving the problem of chip surface indentation 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 fixed claw to change the elastic force of the elastic member so that the fixed claw can perform the second action.

6. The test socket for solving the problem of chip surface indentation 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 for solving the problem of chip surface indentation according to claim 6, characterized in that: The end of the pressing arm is integrally formed with a limiting structure, which is a convex strip arranged on the side of the pressing shaft hole close to the pressing plate, and the side of the convex strip close to the bottom plate is provided with a rotating concave surface recessed toward the pressing arm body to avoid the moving path of the bottom plate, and a limiting plane connected to the rotating concave surface to block the movement of the bottom plate.

8. The test socket for solving the problem of chip surface indentation according to any one of claims 1 to 5, characterized in that: The end of the pressing arm is integrally formed with a limiting structure, which is a convex strip arranged on the side of the pressing shaft hole close to the pressing plate, and the side of the convex strip close to the bottom plate is provided with a rotating concave surface recessed toward the pressing arm body to avoid the moving path of the bottom plate, and a limiting plane connected to the rotating concave surface to block the movement of the bottom plate.

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