Magnetic core electrical property double-turn test tool

Abstract

The utility model relates to the technical field of amorphous nanocrystalline magnetic core testing equipment, and discloses a magnetic core electrical property double-turn testing tool which comprises a working platform, the front side of the top end of the working platform is fixedly connected with a first fixing plate, the top end of the first fixing plate is in threaded connection with a screw, the outer side of the screw is in threaded connection with an epoxy plate, and the outer side of the epoxy plate is in threaded connection with a second fixing plate. A hollow column is fixedly connected to the middle of the bottom end of the epoxy plate, a spring is fixedly connected to the inner side of the hollow column, a sliding rod is fixedly connected to the top end of the spring, a second fixing plate is fixedly connected to the top end of the sliding rod, and a groove is formed in the middle of the top end of the epoxy plate. According to the magnetic core ring fixing device, the screw is tightened to fix the first fixing plate, then the second fixing plate is pulled to enable the sliding rod and the spring to ascend, the magnetic core ring is placed in the groove to be attached, after the second fixing plate is released, the spring enables the sliding rod and the second fixing plate to descend, and therefore the magnetic core ring is fixed, shaking during working is avoided, efficiency is improved, and working time is shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of amorphous and nanocrystalline magnetic core testing equipment, and in particular to a dual-turn testing fixture for the electrical performance of magnetic cores. Background Technology

[0002] Traditional magnetic core testing methods mostly use single-turn windings for testing. However, single-turn testing is difficult to fully and accurately reflect the performance of magnetic cores in actual multi-turn winding applications. In actual use, magnetic cores usually work in conjunction with multi-turn windings. The magnetic field coupling and distributed capacitance between multi-turn windings will affect the electrical performance of the magnetic core. Single-turn testing cannot fully consider these factors, resulting in a certain deviation between the test results and the actual application.

[0003] A search revealed Chinese Patent Publication No. CN212568851U, which discloses a tooling fixture for testing the electrical performance of ET-type magnetic cores. The fixture includes a top cover, a base, copper wires, and copper plugs. The top cover comprises a hard plastic sheet and pins. The base includes a milky white acrylic plate, pins, a copper plate, and a test connector. The acrylic plate sits on top of the copper plate, corresponding to the pins. The base has two rows of pins, each pin having five through holes. Interconnected wires are mounted on the acrylic plate, with the bottom ends of the through holes located on the wires. Both ends of the wires are connected to the test connector. Two test plugs are connected to copper connectors via copper wires. This utility model tooling fixture is used in the production of manganese-zinc soft magnetic high-permeability ferrite products, specifically in the electrical performance sorting and testing process of ET type products. By designing a testing tooling fixture, the electrical performance of the sintered ET type products is tested to meet customer requirements and reduce testing errors. However, this utility model does not consider that the magnetic core ring needs to be fully fixed before use. If the magnetic core is not sufficiently fixed, the relative position between the double-turn winding and the magnetic core ring will change, thereby affecting the coupling effect of the magnetic field. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a double-turn testing fixture for the electrical performance of magnetic cores, which aims to improve the problem of insufficient fixation of the magnetic core ring in the prior art, thus affecting the coupling effect of the magnetic field.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a double-turn testing fixture for the electrical performance of a magnetic core, comprising a working platform, a fixing plate one fixedly connected to the front top of the working platform, a screw threadedly connected to the top of the fixing plate one, an epoxy plate threadedly connected to the outer side of the screw, a hollow column fixedly connected to the middle bottom of the epoxy plate, a spring fixedly connected to the inner side of the hollow column, a sliding rod fixedly connected to the top of the spring, a fixing plate two fixedly connected to the top of the sliding rod, a groove formed in the middle top of the epoxy plate, a magnetic core ring installed on the inner wall of the groove, and an auxiliary mechanism provided at the top of the working platform, the auxiliary mechanism being used to simplify the testing process.

[0006] Through the above technical solution: a fixing plate is fixedly connected to the front top of the work platform, ensuring the stability of the structure. The top of the fixing plate is threaded with a screw, and the outer side of the screw is threaded with an epoxy board, demonstrating the fine craftsmanship. A hollow column is fixedly connected to the middle bottom of the epoxy board, and the top of the spring is fixedly connected to the sliding rod. The top of the sliding rod is fixedly connected to a fixing plate, further enhancing the overall structural stability. A groove is opened in the middle top of the epoxy board, and a magnetic core ring is installed on the inner wall of the groove. This not only reflects the advanced technology but also improves the functionality of the equipment. The auxiliary mechanism aims to simplify the testing process and improve work efficiency.

[0007] As a further description of the above technical solution:

[0008] The auxiliary mechanism includes a hollow box, with the bottom end of the epoxy board fixedly connected to the top end of the hollow box. An iron sheet is fixedly connected inside the hollow box, and a copper sheet is fixedly connected to the inner wall of the epoxy board. A test clip is provided at the top end of the epoxy board, a connecting wire is fixedly connected to the rear side of the test clip, and a test rod is fixedly connected to the front end of the test clip.

[0009] The above technical solution involves: the lower end of the epoxy board being fixedly connected to the upper end of the hollow box, ensuring that there is no relative displacement between them; an iron sheet being fixedly connected inside the hollow box, which aims to enhance the stability of the overall structure and the electromagnetic shielding effect; a copper sheet being fixedly connected to the inner wall of the epoxy board, which not only improves the conductivity of the circuit but also provides an additional protective layer for the equipment; a test clip being provided at the upper end of the epoxy board, with a connecting wire fixedly connected to the rear of the test clip, ensuring accurate transmission of test data; and test rods designed for both ease of operation and testing accuracy.

[0010] As a further description of the above technical solution:

[0011] A U-shaped plate is fixedly connected to the rear top of the work platform, and a rotating column is rotatably connected to the inner side of the U-shaped plate.

[0012] Through the above technical solution: a U-shaped plate is fixedly connected to the rear top of the work platform. The U-shaped plate not only stably supports the entire structure, but also has a rotating column rotatably connected to its inner side.

[0013] As a further description of the above technical solution:

[0014] A tester is fixedly connected to the outer side of the rotating column, and a socket is fixedly connected to the front side of the tester.

[0015] Through the above technical solution, the tester is responsible for performing precise testing tasks, and the jacks take into account the convenience and safety of operation, ensuring the efficiency and accuracy of the testing process.

[0016] As a further description of the above technical solution:

[0017] A socket is fixedly connected to the front left end of the tester, and a button is fixedly connected to the front right end of the tester.

[0018] The above technical solution involves: a socket on the left front side of the tester to ensure its stability and reliability during use; and a button fixedly connected to the right front side of the tester to ensure user convenience and intuitiveness, as well as durability during frequent use.

[0019] As a further description of the above technical solution:

[0020] A display screen is fixedly connected to the center of the front side of the tester, and the bottom of the tester is fixedly connected to one end of the connecting cable.

[0021] The above technical solution involves a display screen fixedly connected to the front center of the tester, which aims to provide users with intuitive and easy-to-read test results. The bottom of the tester is fixedly connected to one end of the connecting cable, ensuring the stability and accuracy of the tester during data transmission.

[0022] As a further description of the above technical solution:

[0023] The outer side of the sliding rod is slidably connected to the inner side of the epoxy board, and multiple rubber blocks are fixedly connected to the outer side of the working platform.

[0024] The above technical solution ensures the flexible movement of the sliding rod by connecting its outer side to the inner side of the epoxy board. The rubber block not only enhances the stability of the platform but also provides additional cushioning protection, ensuring operational safety.

[0025] As a further description of the above technical solution:

[0026] A base is fixedly connected to the rear top of the work platform, and the top of the base is fixedly connected to the bottom of the tester.

[0027] The above technical solution, with the upper end of the base fixedly connected to the lower end of the tester, not only ensures the stable placement of the tester but also facilitates precise testing operations by the operator.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, before using the magnetic core ring, the epoxy board is first placed on the fixing plate one and the screws are tightened to fix both sides. Then, the fixing plate two is pulled, which will drive the sliding rod and spring to move upward. The spring deforms and increases its elasticity during the stretching. Then, the magnetic core ring is placed into the groove to ensure that they fit tightly. Finally, the fixing plate two is released. The elasticity of the spring will cause the sliding rod and the fixing plate two to move downward and fix the magnetic core ring in the groove, thus fixing the magnetic core ring and preventing it from shaking back and forth during operation due to unstable fixing, which would affect work efficiency and prolong working time.

[0030] 2. In this utility model, if it is necessary to switch between single-turn and double-turn test modes, the test bar is moved so that it only contacts the copper sheet to perform a single-turn test. Then, the test bar is moved downward and passes through the groove into the hollow box so that it contacts the iron sheet below at the same time, thus completing the conversion to the double-turn test mode. This realizes the conversion between the two modes, simplifies the test process, improves the test efficiency, and prevents the test time from being greatly increased due to the cumbersome process. Attached Figure Description

[0031] Figure 1 This is a three-dimensional view of the front side of the working platform of a dual-turn testing fixture for the electrical performance of a magnetic core proposed in this utility model;

[0032] Figure 2 This is a partial structural exploded view of the tester for a dual-turn testing fixture for the electrical performance of a magnetic core proposed in this utility model.

[0033] Figure 3 This is a bottom view of the fixing plate of a double-turn testing fixture for the electrical performance of a magnetic core proposed in this utility model;

[0034] Figure 4 This is a partial structural diagram of the epoxy board of a dual-turn testing fixture for the electrical performance of a magnetic core proposed in this utility model.

[0035] Figure 5 This is a partial structural diagram of the magnetic core ring of a dual-turn testing fixture for the electrical performance of a magnetic core proposed in this utility model.

[0036] Legend:

[0037] 1. Working platform; 2. Auxiliary mechanism; 201. Hollow box; 202. Iron sheet; 203. Copper sheet; 204. Test clamp; 205. Connecting wire; 206. Test rod; 3. Fixing plate one; 4. Epoxy board; 5. Hollow column; 6. Spring; 7. Sliding rod; 8. Fixing plate two; 9. Magnetic core ring; 10. Groove; 11. Screw; 12. Rubber block; 13. U-shaped plate; 14. Button; 15. Tester; 16. Display screen; 17. Rotating column; 18. Socket; 19. Base. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see the appendix Figure 1 Appendix Figure 3 and attached Figure 5 An embodiment of this utility model provides a double-turn testing fixture for the electrical performance of a magnetic core, comprising a working platform 1, a fixing plate 3 fixedly connected to the front top of the working platform 1, a screw 11 threadedly connected to the top of the fixing plate 3, an epoxy plate 4 threadedly connected to the outer side of the screw 11, a hollow column 5 fixedly connected to the middle bottom of the epoxy plate 4, a spring 6 fixedly connected to the inner side of the hollow column 5, a sliding rod 7 fixedly connected to the top of the spring 6, a fixing plate 8 fixedly connected to the top of the sliding rod 7, a groove 10 formed in the middle top of the epoxy plate 4, a magnetic core ring 9 installed on the inner wall of the groove 10, an auxiliary mechanism 2 provided at the top of the working platform 1, the auxiliary mechanism 2 being used to simplify the testing process, the outer side of the sliding rod 7 being slidably connected to the inner side of the epoxy plate 4, and multiple rubber blocks 12 fixedly connected to the outer side of the working platform 1;

[0040] Specifically, a fixing plate 3 is fixedly connected to the front top of the work platform 1 to ensure structural stability. A screw 11 is threadedly connected to the top of the fixing plate 3, and an epoxy board 4 is threadedly connected to the outer side of the screw 11, showcasing the fine craftsmanship. A hollow column 5 is fixedly connected to the middle bottom of the epoxy board 4. The top of the spring 6 is fixedly connected to the sliding rod 7, and a fixing plate 8 is fixedly connected to the top of the sliding rod 7, further enhancing the overall structural stability. A groove 10 is provided in the middle top of the epoxy board 4, and a magnetic core ring 9 is installed on the inner wall of the groove 10, which not only reflects the advanced technology but also enhances the functionality of the equipment. The auxiliary mechanism 2 aims to simplify the testing process and improve work efficiency. The outer side of the sliding rod 7 is slidably connected to the inner side of the epoxy board 4, ensuring the flexible movement of the sliding rod 7. The rubber block 12 not only enhances the stability of the platform but also provides additional cushioning protection, ensuring operational safety.

[0041] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The auxiliary mechanism 2 includes a hollow box 201, the bottom end of the epoxy board 4 is fixedly connected to the top end of the hollow box 201, an iron sheet 202 is fixedly connected inside the hollow box 201, a copper sheet 203 is fixedly connected to the inner wall of the epoxy board 4, a test clip 204 is provided at the top end of the epoxy board 4, a connecting wire 205 is fixedly connected to the rear side of the test clip 204, a test rod 206 is fixedly connected to the front end of the test clip 204, and a base 19 is fixedly connected to the rear side of the top end of the work platform 1, and the top end of the base 19 is fixedly connected to the bottom end of the tester 15.

[0042] Specifically, the lower end of the epoxy board 4 is fixedly connected to the upper end of the hollow box 201 to ensure that there is no relative displacement between the two. An iron sheet 202 is fixedly connected inside the hollow box 201. The iron sheet 202 is designed to enhance the stability of the overall structure and the electromagnetic shielding effect. A copper sheet 203 is fixedly connected to the inner wall of the epoxy board 4. The copper sheet 203 not only improves the conductivity of the circuit, but also provides an additional protective layer for the equipment. A test clip 204 is set at the upper end of the epoxy board 4. A connecting wire 205 is fixedly connected to the rear of the test clip 204 to ensure the accurate transmission of test data. The test rod 206 takes into account the convenience of operation and the accuracy of testing. A base 19 is set at the upper rear of the work platform 1. The upper end of the base 19 is fixedly connected to the lower end of the tester 15, which not only ensures the stable placement of the tester 15, but also facilitates the operator to perform accurate testing operations.

[0043] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3A U-shaped plate 13 is fixedly connected to the rear top of the work platform 1. A rotating column 17 is rotatably connected to the inner side of the U-shaped plate 13. A tester 15 is fixedly connected to the outer side of the rotating column 17. An insertion hole 18 is fixedly connected to the front side of the tester 15.

[0044] Specifically, a U-shaped plate 13 is fixedly connected to the rear top of the work platform 1. The U-shaped plate 13 not only stably supports the entire structure, but also has a rotating column 17 rotatably connected to its inner side. A tester 15 is fixedly connected to the outer side of the rotating column 17. The tester 15 is responsible for performing precise testing tasks. A socket 18 is fixedly connected to the front of the tester 15. The socket 18 takes into account the convenience and safety of operation, ensuring the efficiency and accuracy of the testing process.

[0045] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The front left end of the tester 15 is fixedly connected to the socket 18, the front right end of the tester 15 is fixedly connected to the button 14, the front middle part of the tester 15 is fixedly connected to the display screen 16, and the bottom end of the tester 15 is fixedly connected to one end of the connecting cable 205.

[0046] Specifically, the tester 15 has a socket 18 on the left front side to ensure its stability and reliability during use. The tester 15 has a button 14 fixedly connected to the right front side to ensure user convenience and intuitiveness, and to ensure its durability during frequent use. The tester 15 has a display screen 16 fixedly connected to the middle front side to provide users with intuitive and easy-to-read test results. The bottom of the tester 15 is fixedly connected to one end of the connecting cable 205 to ensure the stability and accuracy of the tester 15 during data transmission.

[0047] Working principle: Before use, the magnetic core ring 9 needs to be fixed. First, place the epoxy board 4 on the top of the fixing plate 3, and then tighten the screw 11 to firmly fix the fixing plate 3 and the epoxy board 4 together. Then pull the fixing plate 8, which will pull the sliding rod 7 upward and drive the spring 6 to move together. The spring 6 will deform during the stretching process, thus increasing the elastic force. Then put the magnetic core ring 9 into the groove 10. The magnetic core ring 9 and the groove 10 fit tightly together. Release the fixing plate 8. Under the elastic force of the spring 6, the spring 6 will tightly pull the sliding rod 7 and the fixing plate 8 downward together. The fixing plate 8 will control the magnetic core ring 9 inside the groove 10, thus fixing the magnetic core ring 9 and preventing it from shaking back and forth during operation due to unstable fixing, which would affect work efficiency and extend working time.

[0048] To switch between single-turn and double-turn modes, the test clamp 204 can be moved to bring the test rod 206 into contact with the copper sheet 203 above. At this time, the test rod 206 only contacts the copper sheet 203, which is sufficient for single-turn testing. Then, the test rod 206 is inserted downwards, passing through the groove 10 and entering the hollow box 201, so that it simultaneously contacts the iron sheet 202 below, which can switch to double-turn testing. This dual-mode switching simplifies the testing process, improves testing efficiency, and prevents the testing time from being greatly increased due to cumbersome procedures.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A two-turn testing fixture for the electrical performance of a magnetic core, comprising a working platform (1), characterized in that: The top front of the working platform (1) is fixedly connected to a fixing plate (3), the top of the fixing plate (3) is threaded with a screw (11), the outer side of the screw (11) is threaded with an epoxy plate (4), the bottom middle of the epoxy plate (4) is fixedly connected to a hollow column (5), the inner side of the hollow column (5) is fixedly connected to a spring (6), the top of the spring (6) is fixedly connected to a sliding rod (7), the top of the sliding rod (7) is fixedly connected to a fixing plate (8), the top middle of the epoxy plate (4) is provided with a groove (10), the inner wall of the groove (10) is installed with a magnetic core ring (9), the top of the working platform (1) is provided with an auxiliary mechanism (2), the auxiliary mechanism (2) is used to simplify the test process.

2. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 1, characterized in that: The auxiliary mechanism (2) includes a hollow box (201), the bottom end of the epoxy board (4) is fixedly connected to the top end of the hollow box (201), an iron sheet (202) is fixedly connected inside the hollow box (201), a copper sheet (203) is fixedly connected to the inner wall of the epoxy board (4), a test clip (204) is provided at the top end of the epoxy board (4), a connecting wire (205) is fixedly connected to the rear side of the test clip (204), and a test rod (206) is fixedly connected to the front end of the test clip (204).

3. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 1, characterized in that: A U-shaped plate (13) is fixedly connected to the rear top of the work platform (1), and a rotating column (17) is rotatably connected to the inner side of the U-shaped plate (13).

4. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 3, characterized in that: A tester (15) is fixedly connected to the outside of the rotating column (17), and a socket (18) is fixedly connected to the front side of the tester (15).

5. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 4, characterized in that: The tester (15) has a socket (18) fixedly connected to the left front side and a button (14) fixedly connected to the right front side.

6. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 4, characterized in that: The tester (15) has a display screen (16) fixedly connected to the middle of its front side, and the bottom of the tester (15) is fixedly connected to one end of the connecting line (205).

7. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 1, characterized in that: The outer side of the sliding rod (7) is slidably connected to the inner side of the epoxy board (4), and multiple rubber blocks (12) are fixedly connected to the outer side of the working platform (1).

8. The dual-turn testing fixture for the electrical performance of a magnetic core according to claim 1, characterized in that: A base (19) is fixedly connected to the rear top of the work platform (1), and the top of the base (19) is fixedly connected to the bottom of the tester (15).

Images