General-purpose pulse test fixture

Abstract

The utility model relates to the technical field of resistance detection relates to a general type pulse test fixture. The utility model discloses that the moving block slides on the base plate, and the fixed block and moving block are oppositely arranged, and the material pressing part is pressed in the test end of test product on the test contact of fixed block and moving block, and is connected with the power line on the power loading end on fixed block and moving block, and the output end is connected with test equipment through the output electric wire, and the power equipment sets up the parameter, and the power line is electrified, and test equipment detects the output current of output electric wire and completes the pulse test, effectively solved the product damage and the contact of conventional power equipment output cable direct clamping sample piece and the poor and small -size product and the problem that the hard clamping etc. can be applicable to multi -size product, avoid appearing the accuracy of the accuracy of the experimental result of the contact of poor influence, improve the efficiency and the convenience of pulse test.

Description

Technical Field

[0001] This utility model relates to the field of resistance detection technology, and specifically to a general-purpose pulse testing fixture. Background Technology

[0002] Commercially available power supply test cables, used for testing milliohm-level resistors, often carry currents of several thousand or even tens of thousands of amperes. This requires the power supply output cables to be large enough to carry the larger current. At the same time, when testing small electronic components, the large cables make it difficult to clamp the small products, which can easily lead to poor contact and affect the test results and efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a universal pulse testing fixture that can be applied to products of multiple sizes, avoids poor contact affecting the accuracy of experimental results, and improves the efficiency and convenience of pulse testing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A general-purpose pulse testing fixture, comprising:

[0006] A substrate with a testing station on it;

[0007] A positioning component is disposed on the test station. The positioning component includes a fixed block and a movable block. The movable block is slidably disposed on the substrate. The fixed block and the movable block are disposed opposite to each other, and test contacts are provided on the detection ends of the fixed block and the movable block.

[0008] A pressing assembly is disposed on the positioning assembly. The pressing assembly includes two pressing parts, which are respectively disposed on a fixed block and a movable block. The pressing parts are used to press the test end of the test product onto the test contact of the fixed block and the movable block.

[0009] Both the fixed block and the moving block are equipped with a power loading terminal and an output terminal.

[0010] In one embodiment of this utility model, the substrate is provided with a plurality of mounting screw holes, and the fixing block is provided with fixing holes that match the mounting screw holes. The fixing holes and the mounting screw holes are connected by fixing bolts.

[0011] In one embodiment of this utility model, the movable block is provided with a waist-shaped groove, and a movable bolt is provided on the waist-shaped groove. The movable block is connected to the base plate through the movable bolt.

[0012] In one embodiment of this utility model, both the moving block and the fixed block are made of copper blocks, and the surfaces of the moving block and the fixed block are provided with electroplated layers. The test contact is the copper leakage area on the moving block and the fixed block where there is no electroplated layer.

[0013] In one embodiment of this utility model, the pressing component includes a pressing plate, the fixed block and the movable block are provided with pressing screw holes, the pressing plate is provided with a pressing hole, the pressing hole is provided with a pressing screw, the pressing screw passes through the pressing hole and is connected to the pressing screw hole, rotating the pressing screw drives the pressing plate to press the test product onto the fixed block or the movable block.

[0014] In one embodiment of this utility model, the pressure screw hole is disposed between two test contacts, and the length of the pressure plate is less than the distance between the two test contacts.

[0015] In one embodiment of this utility model, the test contact is a test copper plate, which is disposed on both sides of the detection end, and a fixing groove is formed between the two test copper plates. The pressing component is disposed on the fixing groove and is used to press the test end of the test product tightly onto the two test copper plates.

[0016] In one embodiment of this utility model, the pressure plate includes a spring sheet, the spring sheet includes two pressure ends and a connecting part connecting the two pressure ends, the spring sheet is formed by stamping elastic material strip, the pressure hole is provided on the connecting part, and the pressure screw drives the two pressure ends to press the test product onto the test contact.

[0017] In one embodiment of this utility model, a guide hole is provided at the bottom of the pressure screw hole, and a guide rod is provided at the bottom of the pressure screw. The guide rod is slidably mounted on the guide hole, and a retaining ring is provided at the free end of the guide rod so that the guide rod cannot be disengaged from the guide hole.

[0018] In one embodiment of the present invention, the pressing component further includes a spring, which is sleeved on the pressing screw. One end of the spring abuts against the pressing plate, and the other end abuts against the bolt head of the pressing screw.

[0019] The beneficial effects of this utility model are:

[0020] The movable block of this invention is slidably mounted on a substrate, with a fixed block and the movable block positioned opposite each other. A pressing component presses the test end of the test product against the test contacts of the fixed block and the movable block. A power supply cable is connected to the power loading end on the fixed block and the movable block, while the output end is connected to the test equipment via an output cable. After the power supply equipment is set with parameters and the power cable is energized, the test equipment detects the output current of the output cable and completes the pulse test. This invention effectively solves the problems of product damage and poor contact caused by directly clamping the sample with the output cable of conventional power supply equipment, as well as the difficulty in clamping small-sized products. It can be applied to products of various sizes, avoids the impact of poor contact on the accuracy of experimental results, and improves the efficiency and convenience of pulse testing. Attached Figure Description

[0021] Fig. 1 This is a schematic diagram of a general-purpose pulse testing fixture according to this utility model.

[0022] Fig. 2 This is a schematic diagram of the pressing component of this utility model.

[0023] The following are the labels in the diagram: 1. Substrate; 11. Test station; 12. Mounting screw hole; 13. Power loading end; 14. Output end; 2. Moving block; 21. Waist-shaped groove; 22. Test contact; 3. Fixing block; 31. Fixing hole; 4. Pressing component; 41. Pressing plate; 42. Pressing end; 43. Pressing screw; 44. Pressing hole; 45. Connecting part; 46. Spring; 47. Guide rod; 48. Pressing screw hole; 49. Snap ring. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0025] Reference Figs. 1-2 As shown, a general-purpose pulse testing fixture includes:

[0026] Substrate 1, on which a test station 11 is provided;

[0027] A positioning component is provided on the test station 11. The positioning component includes a fixed block 3 and a movable block 2. The movable block 2 is slidably disposed on the substrate 1. The fixed block 3 and the movable block 2 are disposed opposite to each other, and test contacts 22 are provided on the detection ends of the fixed block 3 and the movable block 2.

[0028] A pressing assembly is disposed on the positioning assembly. The pressing assembly includes two pressing parts 4, which are respectively disposed on the fixed block 3 and the moving block 2. The pressing parts 4 are used to press the test end of the test product onto the test contact 22 of the fixed block 3 and the moving block 2.

[0029] Both the fixed block 3 and the movable block 2 are provided with a power loading terminal 13 and an output terminal 14.

[0030] The movable block 2 of this invention is slidably mounted on the substrate 1. The fixed block 3 and the movable block 2 are arranged opposite each other. The pressing component 4 presses the test end of the test product onto the test contact 22 of the fixed block 3 and the movable block 2. The power loading end 13 on the fixed block 3 and the movable block 2 is connected to the power cord. At the same time, the output end 14 is connected to the test equipment through the output wire. After the power equipment is set with parameters and the power cord is powered on, the test equipment detects the output current of the output wire and completes the pulse test. This invention effectively solves the problems of product damage and poor contact caused by the direct clamping of the sample by the output cable of conventional power equipment, as well as the difficulty in clamping small-sized products. It can be applied to products of various sizes, avoids the impact of poor contact on the accuracy of experimental results, and improves the efficiency and convenience of pulse testing.

[0031] In one embodiment of the present invention, the substrate 1 is provided with a plurality of mounting screw holes 12, and the fixing block 3 is provided with fixing holes 31 that match the mounting screw holes 12. The fixing holes 31 and the mounting screw holes 12 are connected by fixing bolts.

[0032] Specifically, the resistor to be tested is soldered onto a square adapter circuit board. The four corners of the circuit board are provided with connection points that match the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2. The connection points and the test contacts 22 are in surface contact. The fixing holes 31 on the fixed block 3 are aligned with the mounting screw holes 12 on the substrate 1, and the fixed block 3 is fixed to the substrate 1 with fixing bolts. The moving plate is then set opposite to the fixed plate so that the distance between them matches the circuit board. This solves the problems of product damage and poor contact caused by directly clamping the sample with the output cable of conventional power equipment, and can be applied to products of multiple sizes.

[0033] In one embodiment of the present invention, the movable block 2 is provided with a waist-shaped groove 21, and a movable bolt is provided on the waist-shaped groove 21. The movable block 2 is connected to the base plate 1 through the movable bolt.

[0034] Specifically, the movable block 2 is provided with a waist-shaped groove 21. By moving relative to the fixed block 3 along the waist-shaped groove 21, the distance between the fixed block 3 and the movable block 2 can be adjusted. Then, the movable block 2 is connected to the base plate 1 by a movable bolt, thereby completing the positioning of the movable block 2 and the fixed block 3. The distance between the two can be precisely adjusted so that it accurately corresponds to the distance between each port of the test product, and it can be applied to products of multiple sizes.

[0035] In one embodiment of this utility model, both the moving block 2 and the fixed block 3 are made of copper blocks, and the surfaces of the moving block 2 and the fixed block 3 are provided with electroplating layers. The test contact 22 is the copper leakage area on the moving block 2 and the fixed block 3 where there is no electroplating layer.

[0036] Specifically, both the moving block and the fixed block 3 are made of copper, which can ensure the conductivity of the test. The test contact 22 is the exposed copper area on the moving block 2 and the fixed block 3 without electroplating, which can ensure the conductivity stability of the test product.

[0037] In one embodiment of this utility model, the pressing component 4 includes a pressing plate 41, the fixed block 3 and the movable block 2 are provided with pressing screw holes 48, the pressing plate 41 is provided with pressing holes 44, and the pressing holes 44 are provided with pressing screws 43. The pressing screws 43 pass through the pressing holes 44 and are connected to the pressing screw holes 48. Rotating the pressing screws 43 drives the pressing plate 41 to press the test product onto the fixed block 3 or the movable block 2.

[0038] Specifically, the pressure plate 41 is pushed upward to expose the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2. After connecting the connection points on the circuit board with each test point, the spring is released, and the pressure screw 43 is rotated to drive the pressure plate 41 to press the test product onto the fixed block 3 or the moving block 2, thereby pressing the test product onto the test contacts 22. This completes the rapid positioning of the test product, making the contact points uniform, thereby improving the accuracy and consistency of the product resistance test.

[0039] In one embodiment of this utility model, the pressure screw hole 48 is disposed between two test contacts 22, and the length of the pressure plate 41 is less than the distance between the two test contacts 22.

[0040] Specifically, the pressure screw hole 48 is set between the two test contacts 22, which allows the pressure plate 41 to effectively press the test product and ensure its positioning effect. The length of the pressure plate 41 is less than the distance between the two test contacts 22, which can prevent the pressure plate 41 from pressing the test product and causing false contact, thus affecting the product testing accuracy.

[0041] In one embodiment of this utility model, the test contact 22 is a test copper plate, which is disposed on both sides of the detection end, and a fixing groove is formed between the two test copper plates. The pressing component 4 is disposed on the fixing groove, and the pressing component 4 is used to press the test end of the test product tightly onto the two test copper plates.

[0042] Specifically, the pressing component 4 is used to press the test end of the test product onto the two test copper plates, forming a fixing groove between the two test copper plates. Rotating the pressing screw 43 drives the pressing plate 41 to press the test product onto the fixed block 3 or the moving block 2, so that the four corners of the circuit board are provided with connection points that match the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2. The connection points and the test contacts 22 are in surface contact, ensuring the detection continuity effect and improving the detection accuracy.

[0043] In one embodiment of the present invention, the pressure plate 41 includes a spring sheet, the spring sheet includes two pressure ends 42 and a connecting part 45 connecting the two pressure ends 42. The spring sheet is formed by stamping elastic material strip. The pressure hole 44 is provided on the connecting part 45. The pressure screw 43 drives the two pressure ends 42 to press the test product onto the test contact 22.

[0044] Specifically, rotating the pressure screw 43 drives the two pressure ends 42 to press the test product onto the test contact 22, thereby completing the rapid positioning of the test product. The material strip is directly stamped and formed, which is low in cost. At the same time, it has a certain degree of elasticity, which can form a flexible and rigid clamping on the circuit board to ensure the stability of the test.

[0045] In one embodiment of the present invention, a guide hole is provided at the bottom of the pressure screw hole 48, and a guide rod 47 is provided at the bottom of the pressure screw 43. The guide rod 47 is slidably disposed on the guide hole, and a retaining ring 49 is provided at the free end of the guide rod 47 so that the guide rod 47 cannot be disengaged from the guide hole.

[0046] Specifically, the guide rod 47 is slidably mounted on the guide hole, which can ensure that the pressure screw 43 is always vertically positioned, making it convenient for the subsequent quick connection between the pressure screw 43 and the pressure screw hole 48, avoiding stripping, facilitating repeated use of the pressure screw 43, and preventing loss.

[0047] In one embodiment of the present invention, the pressing component 4 further includes a spring 46, which is sleeved on the pressing screw 43. One end of the spring 46 abuts against the pressing plate 41, and the other end abuts against the bolt head of the pressing screw 43.

[0048] Specifically, the pressure plate 41 is pushed upward to compress the spring 46, while the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2 are exposed. After connecting the connection points on the circuit board with each test point, the spring is released. Under the reaction force of the spring 46, the two pressure ends 42 on the spring are pressed onto the circuit board. Under the force of the spring 46, the test product can be initially positioned to ensure clamping efficiency and accuracy. At the same time, the spring 46 lifts the pressure screw 43, so that the retaining ring 49 on the guide rod 47 is locked on the edge of the guide hole, which can always ensure that the pressure screw 43 is kept vertical, which facilitates the quick connection between the pressure screw 43 and the pressure screw hole 48 and avoids stripping.

[0049] Usage process

[0050] The resistor to be tested is soldered onto a square adapter circuit board. Connection points matching the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2 are located at the four corners of the circuit board. These connection points and the test contacts 22 are in surface contact. The fixing holes 31 on the fixed block 3 are aligned with the mounting screw holes 12 on the substrate 1, and the fixed block 3 is fixed to the substrate 1 using fixing bolts. The moving plate is then positioned opposite the fixed plate, ensuring the distance between them matches the circuit board. The moving block 2 has a waist-shaped groove 21. By moving relative to the fixed block 3 along the waist-shaped groove 21, the distance between the fixed block 3 and the moving block 2 is adjusted. The moving block 2 is then connected to the substrate 1 using moving bolts, thus completing the positioning of the moving block 2 and the fixed block 3. This pushes the pressure plate 41 upwards to compress the spring 46, simultaneously exposing the test contacts 22 on the detection ends of the fixed block 3 and the moving block 2. After the connection points on the circuit board are connected to each test point, the spring is released. Under the reaction force of the spring 46, the two pressure ends 42 on the spring are pressed against the circuit board. Rotating the pressure screw 43 drives the two pressure ends 42 to press the test product onto the test contact 22, thereby completing the rapid positioning of the test product. The power loading end 13 on the fixed block 3 and the moving block 2 is connected to the power cord. At the same time, the output end 14 is connected to the test equipment through the output wire. After the power equipment is set with parameters and the power cord is powered on, the test equipment detects the output current of the output wire and completes the pulse test. This solves the problems of product damage and poor contact caused by the direct clamping of the sample by the output cable of conventional power equipment. It can be used for pulse test fixtures of multi-size products, solves the problems of low efficiency of conventional power output cable clamping test and poor contact affecting the accuracy of experimental results, and improves the efficiency and convenience of pulse testing.

[0051] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A universal pulse testing fixture, characterized in that, include: A substrate with a testing station on it; A positioning component is disposed on the test station. The positioning component includes a fixed block and a movable block. The movable block is slidably disposed on the substrate. The fixed block and the movable block are disposed opposite to each other, and test contacts are provided on the detection ends of the fixed block and the movable block. A pressing assembly is disposed on the positioning assembly. The pressing assembly includes two pressing parts, which are respectively disposed on a fixed block and a movable block. The pressing parts are used to press the test end of the test product onto the test contact of the fixed block and the movable block. Both the fixed block and the moving block are equipped with a power loading terminal and an output terminal.

2. The universal pulse testing fixture as described in claim 1, characterized in that, The substrate is provided with a plurality of mounting screw holes, and the fixing block is provided with fixing holes that match the mounting screw holes. The fixing holes and the mounting screw holes are connected by fixing bolts.

3. The universal pulse testing fixture as described in claim 1, characterized in that, The movable block is provided with a waist-shaped groove, and a movable bolt is provided on the waist-shaped groove. The movable block is connected to the base plate through the movable bolt.

4. The universal pulse testing fixture as described in claim 1, characterized in that, Both the moving block and the fixed block are made of copper, and the surfaces of the moving block and the fixed block are provided with an electroplated layer. The test contact is the exposed copper area on the moving block and the fixed block where there is no electroplated layer.

5. The universal pulse testing fixture as described in claim 1, characterized in that, The pressing component includes a pressing plate, and the fixed block and the movable block are provided with pressing screw holes. The pressing plate is provided with a pressing hole, and a pressing screw is provided on the pressing hole. The pressing screw passes through the pressing hole and is connected to the pressing screw hole. Rotating the pressing screw drives the pressing plate to press the test product onto the fixed block or the movable block.

6. The universal pulse testing fixture as described in claim 5, characterized in that, The pressure screw hole is located between the two test contacts, and the length of the pressure plate is less than the distance between the two test contacts.

7. The universal pulse testing fixture as described in claim 1, characterized in that, The test contact is a test copper plate, which is set on both sides of the detection end. A fixing groove is formed between the two test copper plates. The pressing component is set on the fixing groove and is used to press the test end of the test product firmly onto the two test copper plates.

8. The universal pulse testing fixture as described in claim 5, characterized in that, The pressure plate includes a spring sheet, which includes two pressure ends and a connecting part connecting the two pressure ends. The spring sheet is formed by stamping elastic material strip. The pressure hole is provided on the connecting part. The pressure screw drives the two pressure ends to press the test product onto the test contact.

9. The universal pulse testing fixture as described in claim 5, characterized in that, The bottom of the pressure screw hole is provided with a guide hole, and the bottom of the pressure screw is provided with a guide rod. The guide rod slides on the guide hole, and the free end of the guide rod is provided with a retaining ring so that the guide rod cannot be disengaged from the guide hole.

10. The universal pulse testing fixture as described in claim 5, characterized in that, The pressing component also includes a spring, which is sleeved on the pressing screw. One end of the spring abuts against the pressing plate, and the other end abuts against the bolt head of the pressing screw.

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