A regulator test fixture

Abstract

This utility model discloses a regulator testing fixture, including a base, a pair of mounting plates, and several test pins. The two mounting plates are vertically fixed on the base. Each test pin includes a needle tip, a needle tube, and a spring. A receiving groove is formed in the needle tube, and the spring and needle tip are located inside the needle tube. The two ends of the spring are fixed to the end walls of the needle tip and the receiving groove, respectively. The needle tip can pass through the needle tube under the action of the spring and is electrically connected to each test wire of the testing equipment. Each test pin is fixedly mounted on the two mounting plates, and the test pins on the two mounting plates are arranged facing each other and correspond one-to-one. The test terminals of the regulator are pressed against the two needle tips. The advantage of this utility model is that when testing the regulator, the testing operation is simplified by synchronously snapping the test terminals on the regulator against the two test pins.

Description

Technical Field

[0001] This utility model relates to the field of testing fixtures, and in particular to a regulator testing fixture. Background Technology

[0002] A regulator is a controller that compares the measured value of a production process parameter with a given value, and after determining the deviation, generates an output signal according to a certain adjustment rule to drive the actuator to eliminate the deviation, so that the parameter is kept near the given value or changes according to a predetermined rule.

[0003] To maintain high performance in the control system, it is necessary to periodically test the regulator's functions, including regulating voltage, excitation current, power transistor voltage drop, and feedback voltage. This ensures the control system can respond quickly and stably to various changes. Regular regulator testing also allows for the timely detection and resolution of problems, preventing production accidents caused by errors. Functional testing of the regulator is performed by electrically connecting it to testing equipment.

[0004] Existing testing equipment typically has test clips at the ends of each test lead, and the regulator has multiple test terminals. Currently, when testing the regulator, the test clips on each test lead are used to clamp the test terminals on the regulator; this allows for functional testing of the regulator. However, this process requires connecting the test clips on the test leads to each test terminal on the regulator one by one, which is inconvenient and time-consuming. An improvement is needed. Utility Model Content

[0005] The purpose of this invention is to provide a test fixture that simplifies the testing process when performing functional tests on a regulator.

[0006] This utility model proposes a regulator testing fixture, including a base, a pair of mounting plates, and a plurality of test pins. The two mounting plates are vertically fixed on the base. Each test pin includes a needle tip, a needle tube, and a spring. A receiving groove is formed in the needle tube. The spring and the needle tip are located inside the needle tube. The two ends of the spring are fixed to the end walls of the needle tip and the receiving groove, respectively. The needle tip can pass through the needle tube under the action of the spring. The needle tip is electrically connected to each test line of the testing equipment. Each test pin is fixedly mounted on the two mounting plates. The test pins on the two mounting plates are arranged facing each other and correspond one-to-one. The test terminals of the regulator are pressed against the two needle tips.

[0007] Preferably, the needle includes a main body and a limiting part, and a limiting ring is fixedly provided at the opening of the receiving groove. The main body can pass through the limiting ring, and the limiting ring limits the limiting part of the needle.

[0008] Preferably, the end of the main body that is away from the limiting part is rounded.

[0009] Preferably, a guide rod is fixedly provided at the bottom end of the needle, and the guide rod passes through the spring.

[0010] Preferably, a pair of mounting holes are formed through the surface of the base, and the bottom end of the mounting plate is fitted into the mounting holes, with the outer periphery of the mounting plate abutting against the inner wall of the mounting holes.

[0011] Preferably, a balancing plate is horizontally fixed on one side of the two mounting plates facing away from each other. The distance between the balancing plate and the bottom of the mounting plate is set to "D", and the depth of the mounting hole is set to "H", satisfying D=H.

[0012] Preferably, the top ends of both mounting plates are set in an arc shape, and the height of the two sides of the mounting plate is lower than the height of the middle position of the mounting plate.

[0013] Preferably, the mounting plate is made of acrylic material.

[0014] Preferably, both mounting plates have a plurality of screw holes formed on their surfaces, the outer surface of the needle tube is provided with threads, and the needle tubes of each test needle are threadedly connected and installed in the screw holes.

[0015] Preferably, the needle is configured to include a ball bearing and a movable platform, the surface of the movable platform is configured as an arc surface, the ball bearing is rolled on the arc surface of the movable platform, the two ends of the spring are respectively fixed to the end wall of the movable platform and the receiving groove, and the ball bearing partially passes through the groove opening of the receiving groove under the action of the spring.

[0016] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0017] 1. When performing functional tests using this test fixture to assist the regulator, the test terminals on the regulator are synchronously snapped into place between the two test pins, which simplifies the regulator testing process and saves operation time.

[0018] 2. A pair of mounting holes are formed through the surface of the base. Two mounting plates are respectively fitted into the two mounting holes, and the balance plate located on the opposite side of the two mounting plates abuts against the base. By setting the two mounting plates to be detachably installed from the base, it is convenient to store the test fixture. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0020] Figure 2 This is a partial cross-sectional view of the test probe in Example 1;

[0021] Figure 3 This is a schematic diagram of the test probe in Example 1;

[0022] Figure 4 This is a schematic diagram of the mounting plate and screw holes in Embodiment 1;

[0023] Figure 5 This is a schematic diagram of the state when the test equipment in Embodiment 1 tests the regulator;

[0024] Figure 6 This is a schematic diagram of the regulator in Embodiment 1;

[0025] Figure 7 This is a structural schematic diagram of the base in Embodiment 1;

[0026] Figure 8 This is a partial cross-sectional view of the test needle in Example 2;

[0027] Figure 9 This is a cross-sectional view of the movable platform in Embodiment 2;

[0028] Figure 10 This is a schematic diagram of the test probe in Example 2.

[0029] Reference numerals: 1. Base; 11. Mounting hole; 2. Mounting plate; 21. Screw hole; 22. Balance plate; 3. Test probe; 31. Needle tip; 311. Main body; 312. Limiting part; 313. Round head; 32. Needle tube; 321. Receiving groove; 322. Thread; 323. Limiting ring; 324. Groove; 33. Spring; 34. Guide rod; 4. Test equipment; 41. Test lead; 5. Adjuster; 51. Test terminal; 6. Ball bearing; 7. Movable table; 71. Curved surface. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer and more understandable, the following description is provided in conjunction with the appendix. Figure 1-10 The present invention will be further described in detail with reference to Examples 1-2. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0031] Example 1,

[0032] Reference Figure 1 , Figure 2 and Figure 3A regulator testing fixture includes a base 1, a pair of mounting plates 2, and six test pins 3. The two mounting plates 2 are vertically mounted on the base 1, making them parallel to each other. The six test pins 3 are divided into two groups and respectively mounted and fixed on the two mounting plates 2. Each test pin 3 includes a needle tip 31, a needle tube 32, and a spring 33. A receiving groove 321 is formed in the needle tube 32, and the spring 33 and the needle tip 31 are installed in the receiving groove 321. One end of the spring 33 is fixed to the end wall of the receiving groove 321, and the other end of the spring 33 is fixed to the end of the needle tip 31. The needle tip 31 can pass through the receiving groove 321 under the elastic force of the spring 33.

[0033] Reference Figure 3 and Figure 4 To enable adjustable mounting of the test pins 3 on the mounting plates 2, three screw holes 21 are provided on the surface of each of the two mounting plates 2. These screw holes 21 correspond one-to-one, and threads 322 are formed on the outer surface of the needle tubes 32. This allows the needle tubes 32 of each test pin 3 to be threadedly connected and installed within the screw holes 21 of the mounting plates 2, thus ensuring that the test pins 3 on the two mounting plates 2 face each other. Each test lead 41 of the testing device 4 is electrically connected to the tip 31 of the test pin 3 on one of the mounting plates 2. The needle tubes 32 of the test pins 3 are threadedly connected and installed within the screw holes 21 of the mounting plates 2. By rotating the needle tubes 32, the mounting position of the test pins 3 on the mounting plates 2 can be adjusted, as well as the spacing between the two corresponding test pins 3, to adapt to the position and thickness of the test terminals 51 on the adjuster 5.

[0034] Reference Figure 1 , Figure 5 and Figure 6 When testing the regulator 5, it is placed between the two mounting plates 2, with each test terminal 51 of the regulator 5 embedded between the two test pins 3. The test terminals 51 of the regulator 5 cause the pins 31 to gradually compress the springs 33. Subsequently, the pins 31, under the action of the springs 33, come into contact with both ends of the test terminals 51 of the regulator 5. Thus, the regulator 5 can be tested using the testing equipment 4 to perform functions such as voltage regulation, excitation current, power transistor voltage drop, and feedback voltage testing. During testing of the regulator 5, each test terminal of the regulator 5 is directly and synchronously snapped between the two pins 31, simplifying the operation and saving time.

[0035] Reference Figure 2 and Figure 3Since the test terminal 51 of the regulator 5 typically has a tiny round hole, to ensure good contact between the needle 31 and the test terminal 51 of the regulator 5, the end of the main body 311 of the needle 31 away from the limiting part 312 is rounded 313. To prevent the needle 31 from detaching from the needle tube 32, the needle 31 is configured to include a main body 311 and a limiting part 312. The diameter of the main body 311 is smaller than the diameter of the limiting part 312. Correspondingly, a limiting ring 323 is integrally provided at the opening of the receiving groove 321 of the needle tube 32. The main body 311 of the needle 31 passes through the limiting ring 323, and the limiting ring 323 can limit the limiting part 312 of the needle 31. To prevent the needle 31 from shifting during movement, a guide rod 34 is fixedly provided at the bottom end of the needle 31, and the guide rod 34 passes through the spring 33 and abuts against the inner side wall of the spring 33.

[0036] To facilitate the engagement of the test terminal 51 of the regulator 5 between the tips 31 of the two test pins 3, the top of the mounting plate 2 is designed in an arc shape, with the height of the two sides of the top of the mounting plate 2 lower than the height of the middle position. This allows for easy observation of the state between the test terminal 51 and the tips 31 when the regulator 5 is engaged, preventing the top sides of the mounting plate 2 from obstructing the operator's view. Furthermore, the mounting plate 2 is made of acrylic material, which has high transparency. This allows the operator to directly observe the engagement of the test terminal 51 of the regulator 5 between the two tips 31 through the mounting plate 2.

[0037] Reference Figure 4 and Figure 7 To facilitate the storage and transportation of the regulator 5 testing fixture, a detachable mounting structure is adopted between the two mounting plates 2 and the base 1. For this purpose, a pair of mounting holes 11 are formed through the surface of the base 1. When installing the two mounting plates 2 onto the base 1, the two mounting plates 2 are respectively snapped into the two mounting holes 11 of the base 1, so that the outer periphery of the mounting plate 2 abuts against the inner wall of the mounting hole 11. To ensure that the mounting plates 2 remain balanced on the base 1, a balancing plate 22 is fixedly installed on the opposite side of each mounting plate 2. The distance between the balancing plate 22 and the bottom end of the mounting plate 2 is set to "D"; the depth of the mounting hole 11 is the same as the thickness of the base 1, and the depth of the mounting hole 11 is set to "H", satisfying D=H. Thus, after the mounting plate 2 is snapped into the mounting hole 11 of the base 1, the bottom surface of the balancing plate 22 abuts against the surface of the base 1, thereby preventing the mounting plate 2 from shifting after installation.

[0038] The specific implementation principle of this application embodiment is as follows: In the test fixture of the regulator 5, two mounting plates 2 are respectively fitted into the mounting holes 11 of the base 1, so that the balance plates 22 on both sides of the mounting plate 2 abut against the surface of the base 1. The needle tube 32 of the test needle 3 is threaded into each screw hole 21 of the mounting plate 2, so that the corresponding test needles 3 on the two mounting plates 2 are close together; and the needle tip 31 of each test needle 3 on one side of the mounting plate 2 is electrically connected to the test equipment 4.

[0039] When the regulator 5 testing fixture is used to assist in functional testing of the regulator 5, the test terminals 51 of the regulator 5 are brought close to the needles 31 of the test pins 3, and the test terminals 51 of the regulator 5 are clamped between the needles 31 of two opposing test pins 3. This causes the needles 31 on both sides to gradually compress the springs 33, and the needles 31, under the action of the springs 33, press firmly against both sides of the test terminals 51 of the regulator 5. Thus, with the assistance of the testing fixture, the testing equipment 4 can perform functional testing on the regulator 5. The setting of this testing fixture can simultaneously connect the test terminals 51 of the regulator 5 to the test leads 41 of the testing equipment 4, simplifying the testing operation and saving operation time.

[0040] Example 2,

[0041] Reference Figure 8 , Figure 9 and Figure 10 The difference from Embodiment 1 is that the needle 31 is configured to include a ball bearing 6 and a movable platform 7. The movable platform 7 is made of copper, and its surface is an arc surface 71. The ball bearing 6 is placed on the arc surface 71 of the movable platform 7. The test leads 41 of the testing device 4 are electrically connected to the movable platform 7. After the ball bearing 6 and the movable platform 7 are installed in the receiving groove 321 of the needle tube 32, the two ends of the spring 33 are fixed to the end walls of the movable platform 7 and the receiving groove 321, respectively. The opening 324 of the movable groove 321 is circular, and the diameter of the opening 324 of the movable groove 321 is smaller than the diameter of the ball bearing 6, so that the ball bearing 6 partially protrudes from the opening 324 of the receiving groove 321 under the action of the spring 33.

[0042] The regulator 5 is tested using a testing fixture. Each test terminal 51 of the regulator 5 is engaged between the tips 31 of two opposing test pins 3, causing the balls 6 to press firmly against both sides of the test terminals 51 under the action of the spring 33. The arrangement of the balls 6 within the tips 31 facilitates smooth installation and removal of the test terminals 51 of the regulator 5 from the testing fixture.

[0043] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, shall be protected by the present invention.

Claims

1. A regulator testing fixture, characterized in that: It includes a base, a pair of mounting plates, and several test probes, with the two mounting plates vertically fixed on the base; The test needle includes a needle tip, a needle tube, and a spring. A receiving groove is formed in the needle tube. The spring and the needle tip are located inside the needle tube. The two ends of the spring are fixed to the end walls of the needle tip and the receiving groove, respectively. The needle tip can be inserted through the needle tube under the action of the spring. The needle tip is electrically connected to each test line of the test equipment. Each of the test pins is fixedly mounted on two mounting plates, with the test pins on the two mounting plates facing each other and corresponding one to one, and the test terminal of the regulator is pressed between the two pins.

2. The regulator testing fixture according to claim 1, characterized in that: The needle includes a main body and a limiting part. A limiting ring is fixedly provided at the opening of the receiving groove. The main body can pass through the limiting ring, and the limiting ring limits the limiting part of the needle.

3. The regulator testing fixture according to claim 2, characterized in that: The end of the main body that is away from the limiting part is rounded.

4. The regulator testing fixture according to claim 1, characterized in that: A guide rod is fixedly provided at the bottom end of the needle, and the guide rod passes through the spring.

5. The regulator testing fixture according to claim 1, characterized in that: A pair of mounting holes are formed through the surface of the base. The bottom end of the mounting plate is fitted into the mounting holes, and the outer periphery of the mounting plate abuts against the inner wall of the mounting holes.

6. The regulator testing fixture according to claim 5, characterized in that: A balance plate is horizontally fixed on one side of the two mounting plates facing away from each other. The distance between the balance plate and the bottom of the mounting plate is set to "D", and the depth of the mounting hole is set to "H", satisfying D=H.

7. The regulator testing fixture according to claim 1, characterized in that: The top of both mounting plates is set in an arc shape, and the height of the two sides of the mounting plate is lower than the height of the middle position of the mounting plate.

8. The regulator testing fixture according to claim 1, characterized in that: The mounting plate is made of acrylic material.

9. The regulator testing fixture according to claim 1, characterized in that: Both mounting plates have several screw holes formed on their surfaces, and the outer surface of the needle tube is provided with threads. The needle tubes of each test needle are threadedly connected and installed in the screw holes.

10. A regulator testing fixture according to claim 1, characterized in that: The needle is configured to include a ball bearing and a movable platform. The surface of the movable platform is an arc surface. The ball bearing rolls on the arc surface of the movable platform. The two ends of the spring are fixed to the end walls of the movable platform and the receiving groove, respectively. Under the action of the spring, the ball bearing partially passes through the opening of the receiving groove.

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