High-voltage flying probe connection contact testing device

Abstract

The utility model provides a high-voltage flying probe connection contact testing device. The high-voltage flying probe connection contact testing device comprises an insulating supporting seat, a testing circuit board, a conduction connecting piece, a flying probe and a displacement sensor, the test circuit board is connected to a measurement master control system. The test circuit board and the conduction connecting piece are both installed on the insulation supporting seat, and the test circuit board and the conduction connecting piece are separated through the insulation supporting seat. The conduction connecting piece is connected with the test circuit board, and the flying probe is connected with the conduction connecting piece. The displacement sensor is installed on the insulation supporting seat and located below the conduction connecting piece, and the displacement sensor is connected with the test circuit board. The high-voltage flying probe connection contact test device of the utility model adopts non-contact measurement, ensures that the insulating strength of a high-voltage path is not affected, and is high in test accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic detection equipment, in particular to a high-voltage flying needle connection contact test device. Background Art

[0002] Existing detection equipment mainly used for testing products such as integrated circuit pins or PCBs generally has a relatively flat product to be tested. However, when existing equipment tests products such as ceramic packages, due to the large difference in product shape and the need for long flying needles, in many cases, only a single flying needle is suitable to enter the package for testing, and it is very difficult to visually check and confirm whether there is contact, thus affecting the test results and resulting in low test accuracy. Summary of the Utility Model

[0003] The utility model provides a high-voltage flying needle connection contact test device that can accurately monitor the pressing distance of the flying needle and improve the test accuracy.

[0004] The technical solution adopted by the utility model is: a high-voltage flying needle connection contact test device, which includes: an insulating support base, a test circuit board, a conduction connecting piece, a flying needle, and a displacement sensor; the test circuit board and the conduction connecting piece are both installed on the insulating support base, and the test circuit board and the conduction connecting piece are separated by the insulating support base, and the conduction connecting piece is connected to the test circuit board; the flying needle is connected to the conduction connecting piece, the displacement sensor is installed on the insulating support base and is located below the conduction connecting piece, and the displacement sensor is connected to the test circuit board; the test circuit board is connected to a measurement main control system.

[0005] Further, the insulating support base includes an insulating vertical mounting block and an insulating horizontal mounting block, and the insulating horizontal mounting block is connected to the lower end of the insulating vertical mounting block; the test circuit board is installed on the side of the insulating vertical mounting block different from the insulating horizontal mounting block; the displacement sensor and the conduction connecting piece are both installed on the insulating horizontal mounting block.

[0006] Further, the conduction connecting piece includes two outer connecting rods and an inner transverse connecting rod connected between the two outer connecting rods; one ends of the two outer connecting rods are connected close to each other to form a connection vertex, and the other ends are far from each other to form two fixed points, and both fixed points are fixedly installed on the insulating horizontal mounting block.

[0007] Further, the insulating horizontal mounting block is provided with a through hole, one end of the flying needle is installed at the connection vertex, and the other end passes through the through hole and extends downward beyond the insulating horizontal mounting block.

[0008] Further, the width of the inner transverse connecting rod is greater than the width of each outer connecting rod, and the displacement sensor is located below the inner transverse connecting rod.

[0009] Further, the diameter of the through hole is greater than the size of the flying needle.

[0010] Further, the insulating level mounting block is provided with a mounting hole, and the displacement sensor is mounted in the mounting hole.

[0011] Further, the displacement sensor is a reflective displacement sensor.

[0012] Further, the insulating support seat is a PEEK plastic support structure.

[0013] Compared with the prior art, in the high-voltage flying needle connection contact test device of the present utility model, a displacement sensor is arranged below the conduction connecting piece. The flying needle is connected to the conduction connecting piece, and the displacement sensor is connected to the test circuit board, so as to realize non-contact measurement between the flying needle and the test circuit board, ensure that the insulation strength of the high-voltage path is not affected, and at the same time, the displacement sensor can accurately monitor the pressing distance of the flying needle, improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification, and are used together with the following specific embodiments to explain the present utility model, but should not be construed as a limitation to the present utility model. In the drawings,

[0015] Figure 1 : the three-dimensional combined view of the high-voltage flying needle connection contact test device of the present utility model;

[0016] Figure 2 : the three-dimensional exploded view of the high-voltage flying needle connection contact test device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will describe in detail the specific embodiments of the present utility model with reference to the drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present utility model, and are not used to limit the present utility model.

[0018] As Figure 1 and Figure 2 shown, the high-voltage flying needle connection contact test device of the present utility model includes an insulating support seat, a test circuit board 1, a conduction connecting piece 2, a flying needle 3 and a displacement sensor 4; wherein, the test circuit board 1 and the conduction connecting piece 2 are both mounted on the insulating support seat, and the test circuit board 1 and the conduction connecting piece 2 are separated by the insulating support seat. The conduction connecting piece 2 is connected to the test circuit board 1 through a wire for conducting high-voltage. The flying needle 3 is connected to the conduction connecting piece 2, and the displacement sensor 4 is mounted on the insulating support seat and located below the conduction connecting piece 2, and the displacement sensor 4 is connected to the test circuit board 1 through a wire; the test circuit board 1 is connected to a measurement main control system. Among them, the displacement sensor 4 is a reflective displacement sensor 4, with high relative displacement accuracy and little interference from external light sources.

[0019] The insulating support base is in an "L" shape, including an insulating vertical mounting block 5 and an insulating horizontal mounting block 6. The insulating horizontal mounting block 6 is connected to the lower end of the insulating vertical mounting block 5. The test circuit board 1 is mounted on the side of the insulating vertical mounting block 5 different from the insulating horizontal mounting block 6.

[0020] In this embodiment, the insulating support base is a PEEK (Polyetheretherketone) plastic support structure to ensure sufficient insulation strength. It can be understood that in other embodiments, it can also be polyethylene (PE) plastic, polypropylene (PP) plastic, polystyrene (PS) plastic, polycarbonate (PC) plastic, polyamide (PA) plastic, etc., as long as the insulation property is satisfied, and it is not limited to this.

[0021] The conduction connecting piece 2 is an "A"-shaped spring piece, including two outer connecting rods 201 and an inner transverse connecting rod 202 connected between the two outer connecting rods 201. One end of the two outer connecting rods 201 is connected close to each other to form a connection vertex 203, and the other end is far from each other to form two fixed points 204. Both fixed points 204 are fixedly mounted on the insulating horizontal mounting block 6. A through hole 601 is provided at the position of the insulating horizontal mounting block 6 corresponding to the connection vertex 203. One end of the flying probe 3 is mounted at the connection vertex 203, and the other end passes through the through hole 601 and extends downward beyond the insulating horizontal mounting block 6.

[0022] Furthermore, the width of the inner transverse connecting rod 202 is greater than the width of each outer connecting rod 201. The displacement sensor 4 is located below the inner transverse connecting rod 202, which is beneficial for the displacement sensor 4 to sense the movement of the conduction connecting piece 2 and realize non-contact displacement measurement. The diameter of the through hole 601 is greater than the size of the flying probe 3 to limit the position of the flying probe 3. Mounting holes 602 are provided on the insulating horizontal mounting block 6, and the displacement sensor 4 is embedded in the mounting holes 602 so that the top surface of the displacement sensor 4 is flush with the upper surface of the insulating horizontal mounting block 6.

[0023] In another embodiment, the displacement sensor 4 can also be mounted in the mounting holes 602, and the top surface of the displacement sensor 4 can slightly protrude from the upper surface of the insulating horizontal mounting block 6, and it is not limited to this.

[0024] The working principle of the high-voltage flying probe connection contact test device of the present utility model is as follows:

[0025] When the flying probe 3 contacts the product to be tested, the flying probe 3 will push up the conduction connecting piece 2 upward. At this time, the displacement sensor 4 can monitor the position change of the conduction connecting piece 2 and feedback the signal to the measurement control system through the test circuit board 1;

[0026] Adjust the position of the conductive connecting piece 2 appropriately to make it in the linear working area of the displacement sensor 4. At this time, the resolution can reach less than or equal to 5 μm, meeting the test requirements of the device.

[0027] In summary, the high-voltage flying needle connection contact test device of the present utility model has the following advantages:

[0028] 1. By setting the flying needle 3 to be connected to the conductive connecting piece 2, and the conductive connecting piece 2 to be connected to the test circuit board 1, the connection contact inspection function of a single flying needle 3 is realized, and at the same time, the non-contact measurement between the flying needle 3 and the test circuit board 1 is realized, ensuring that the insulation strength of the high-voltage path is not affected.

[0029] 2. By arranging the displacement sensor 4 below the conductive connecting piece 2, and connecting the displacement sensor 4 to the test circuit board 1, the displacement sensor 4 can accurately monitor the pressing distance of the flying needle 3. By calculating the displacement of the displacement sensor 4 and using the similarity theorem of triangles to calculate the pressing distance of the flying needle 3, the test accuracy is improved.

[0030] As long as it does not violate the idea of the creation of the present utility model, any combination of various different embodiments of the present utility model shall be regarded as the content disclosed in the present utility model; within the scope of the technical concept of the present utility model, various simple modifications of the technical solution and any combination of different embodiments that do not violate the idea of the creation of the present utility model shall be within the protection scope of the present utility model.

Claims

1. A high-voltage flying needle connection contact test device, characterized in that, Including: An insulating support base, a test circuit board (1), a conduction connecting member (2), a flying probe (3), and a displacement sensor (4); the test circuit board (1) and the conduction connecting member (2) are both mounted on the insulating support base, and the test circuit board (1) and the conduction connecting member (2) are separated by the insulating support base, and the conduction connecting member (2) is connected to the test circuit board (1); the flying probe (3) is connected to the conduction connecting member (2), the displacement sensor (4) is mounted on the insulating support base and is located below the conduction connecting member (2), and the displacement sensor (4) is connected to the test circuit board (1); the test circuit board (1) is connected to a measurement main control system.

2. The high-voltage flying needle connection contact test device according to claim 1, wherein: The insulating support base includes an insulating vertical mounting block (5) and an insulating horizontal mounting block (6), and the insulating horizontal mounting block (6) is connected to the lower end of the insulating vertical mounting block (5); the test circuit board (1) is mounted on a surface of the insulating vertical mounting block (5) different from the insulating horizontal mounting block (6); the displacement sensor (4) and the conduction connecting member (2) are both mounted on the insulating horizontal mounting block (6).

3. The high-voltage flying needle connection and contact testing device according to claim 2, characterized in that: The conduction connecting member (2) includes two outer connecting rods (201) and an inner transverse connecting rod (202) connected between the two outer connecting rods (201); one ends of the two outer connecting rods (201) are connected close to each other to form a connection vertex (203), and the other ends are separated from each other to form two fixed points (204), and the two fixed points (204) are both fixedly mounted on the insulating horizontal mounting block (6).

4. The high-voltage flying needle connection contact test device according to claim 3, characterized in that: The insulating horizontal mounting block (6) is provided with a through hole (601), one end of the flying probe (3) is mounted at the connection vertex (203), and the other end passes through the through hole (601) and extends downward beyond the insulating horizontal mounting block (6).

5. The high-voltage flying needle connection contact test device according to claim 3, wherein: The width of the inner transverse connecting rod (202) is greater than the width of each outer connecting rod (201), and the displacement sensor (4) is located below the inner transverse connecting rod (202).

6. The high-voltage flying needle connection contact test device according to claim 4, wherein: The diameter of the through hole (601) is greater than the size of the flying probe (3).

7. The high-voltage flying needle connection and contact testing device according to claim 2, characterized in that: The insulating horizontal mounting block (6) is provided with a mounting hole (602), and the displacement sensor (4) is mounted in the mounting hole (602).

8. The high-voltage flying needle connection and contact testing device according to claim 1, characterized in that: The displacement sensor (4) is a reflective displacement sensor.

9. The high-voltage flying needle connection contact test device according to claim 1, wherein: The insulating support base is a PEEK plastic support structure.

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