A magnetic ring testing tool

Abstract

The utility model relates to the field of magnetic ring test discloses a kind of magnetic ring test tool, including placing groove, the top surface of workbench is opened in placing groove, the inner wall of placing groove is placed with PCB board, the top surface of workbench is fixed with mounting bracket, the inner wall of mounting bracket is opened with sliding slot in left and right sides, the inner wall of sliding slot is slidably connected with mounting plate, the left and right sides of mounting plate are fixed with connecting column, the outer wall of connecting column is fixed with first sealing ring, tester is fixed on the mounting plate, the bottom surface of tester is fixed with several measurement probes, the inside bottom surface of sliding slot is opened with gas storage warehouse.In the utility model, by the cooperation of connecting column, first sealing ring, fixed block, moving column, second sealing ring, magnetic ring can be fixed in position when staff moves mounting plate downward, so that magnetic ring can be kept in the middle of workbench, effectively prevent magnetic ring from shaking during testing.

Description

Technical Field

[0001] This utility model relates to the technical field of magnetic ring testing, specifically to a magnetic ring testing fixture. Background Technology

[0002] A magnetic ring is a ring-shaped magnetic conductor. It is a commonly used anti-interference component in electronic circuits, effectively suppressing high-frequency noise. It is generally made of ferrite material. Magnetic rings exhibit different impedance characteristics at different frequencies; generally, the impedance is very small at low frequencies, and the impedance increases sharply as the signal frequency rises.

[0003] Chinese patent CN216646684U discloses a multi-turn performance measuring fixture, comprising a fixture base plate and a fixture top plate. The fixture top plate is positioned above the fixture base plate, and a lifting assembly for moving the fixture top plate up and down is provided between the fixture top plate and the fixture base plate. An elastic telescopic component is fixedly provided in the middle of the fixture top plate, and a measuring probe is provided in the middle of the elastic telescopic component. A connecting slot is provided at the top of the fixture base plate, and a PCB board is fixedly provided in the inner cavity of the connecting slot. A probe contact is provided at the top of the PCB board, and a magnetic ring body is provided at the top of the fixture base plate.

[0004] In the above scheme, the measurement error caused by the difference in manual winding of the magnetic ring is reduced by the cooperation of the measuring probe and the elastic expansion component. However, it has the following disadvantages: when testing the magnetic ring, the magnetic ring is placed directly on the tool base plate, which makes the magnetic ring prone to shaking during the test, thereby reducing the accuracy of the magnetic ring test data. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic ring testing fixture to solve the problem that when testing magnetic rings, the magnetic rings are directly placed on the fixture base plate, which causes the magnetic rings to easily shake during the testing process.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a magnetic ring testing fixture, including a placement groove, which is opened on the top surface of a workbench. A PCB board is placed on the inner wall of the placement groove. A mounting frame is fixed on the top surface of the workbench. Sliding grooves are opened on both the left and right sides of the inner wall of the mounting frame. A mounting plate is slidably connected to the inner wall of the sliding groove. Connecting columns are fixed on both the left and right sides of the mounting plate. A first sealing ring is fixed on the outer wall of the connecting column. A tester is fixed on the mounting plate. Several measuring probes are fixed on the bottom surface of the tester. A gas storage chamber is opened on the inner bottom surface of the sliding groove. The connecting column is rotatably inserted into the gas storage chamber. An air outlet is opened on the inner wall of the gas storage chamber. Two connecting frames are fixed on the top surface of the workbench. The connecting frames are fixed to the inner wall of the mounting frame. Two fixing blocks are slidably arranged on the top surface of the workbench. A movable column is fixed on the fixing block. The movable column is slidably inserted into the connecting frame. A second sealing ring is fixed on the outer wall of the movable column.

[0007] Preferably, a rubber pad is fixed to the inner wall of the fixing block.

[0008] Preferably, the top surface of the mounting plate is fixed with two limiting posts, and the top surface of the mounting bracket is provided with two limiting holes, and the limiting posts are slidably inserted into the limiting holes.

[0009] Preferably, the top surface of the workbench has two strip grooves, and the bottom surface of the fixed block is fixed with a sliding block, which is slidably connected to the strip grooves.

[0010] Preferably, a handle is fixed to the rear side of the mounting plate, and an anti-slip sleeve is fixed to the outer wall of the handle.

[0011] Preferably, the top surface of the workbench is provided with a plurality of snap-fit ​​slots, and a shielding plate is snapped into the inner wall of the snap-fit ​​slots.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, the operator can inject a certain amount of air into the air storage chamber through the air intake device. Then, the magnetic ring to be tested can be placed on the top surface of the workbench, directly above the placement slot. At this time, the operator can press the mounting plate, which will drive the connecting column to move downwards along the inner wall of the air storage chamber. Under the action of the first sealing ring, the air in the air storage chamber will be compressed. The compressed air will then enter the connecting frame through the air outlet, thereby pushing the moving column and moving it to bring the two fixed blocks closer together, thus limiting and fixing the magnetic ring. At the same time, the measuring probe will contact the probe contact point on the PCB board, forming a circuit between the measuring probe and the PCB board, thus performing the performance test of the magnetic ring. Through the cooperation of the connecting column, the first sealing ring, the fixed blocks, the moving column, and the second sealing ring, the magnetic ring can be limited and fixed when the operator moves the mounting plate downwards, keeping the magnetic ring in the middle of the workbench. This effectively prevents the magnetic ring from shaking during the test, thereby improving the stability of the magnetic ring test and the accuracy of the magnetic ring test data.

[0014] Second, the rubber pad increases the friction between the magnetic ring and the fixing block, ensuring the magnetic ring remains stable during testing and preventing direct contact between them, thus reducing wear and damage. The combination of the limiting post and the limiting hole makes the mounting plate more stable during vertical movement, allowing it to accurately guide the measuring probe to contact the PCB board, effectively preventing probe misalignment and ensuring its normal operation. The combination of the sliding block and the slot makes the fixing block more stable during movement, accurately limiting and fixing the magnetic ring, effectively preventing misalignment and improving the fixing efficiency.

[0015] Third, the anti-slip sleeve increases the friction between the operator's hand and the handle, allowing the operator to move the mounting plate stably and effectively preventing hand slippage. This ensures stable testing of the magnetic ring's performance. The snap-fit ​​design of the shielding plate allows for easy installation according to the size of the magnetic ring, isolating it from external magnetic fields and effectively preventing interference with the magnetic ring test, thus improving the accuracy and reliability of the test data. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram showing the disassembly of the fixed block and the movable column in an embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Placement slot; 2. Workbench; 3. PCB board; 4. Mounting bracket; 5. Sliding groove; 6. Mounting plate; 7. Connecting post; 8. First sealing ring; 9. Tester; 901. Measuring probe; 10. Gas storage chamber; 11. Gas outlet; 12. Connecting frame; 13. Fixing block; 14. Moving post; 15. Second sealing ring; 16. Rubber pad; 17. Limiting post; 18. Limiting hole; 19. Strip groove; 20. Sliding block; 21. Handle; 22. Anti-slip sleeve; 23. Snap-fit ​​groove; 24. Shielding plate. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, a magnetic ring testing fixture includes a placement groove 1, which is located on the top surface of a workbench 2. A PCB board 3 is placed on the inner wall of the placement groove 1. A mounting bracket 4 is fixed to the top surface of the workbench 2. Sliding grooves 5 are provided on both the left and right sides of the inner wall of the mounting bracket 4. A mounting plate 6 is slidably connected to the inner wall of the sliding groove 5. Connecting posts 7 are fixed on both the left and right sides of the mounting plate 6. A first sealing ring 8 is fixed to the outer wall of the connecting posts 7. A tester 9 is fixed on the mounting plate 6. Several measuring probes 901 are fixed to the bottom surface of the tester 9. It should be noted that the measuring probes 901 are connected to probe contacts on the PCB board 3 via conductive wires. Electrical connection: The wires on the measuring probe 901 and the wires on the PCB board 3 can be connected by a connector. An air storage chamber 10 is provided on the bottom surface of the sliding groove 5. The connecting column 7 is rotatably inserted into the air storage chamber 10. An air outlet 11 is provided on the inner wall of the air storage chamber 10. Two connecting frames 12 are fixed on the top surface of the workbench 2. The connecting frames 12 are fixed to the inner wall of the mounting frame 4. Two fixing blocks 13 are slidably provided on the top surface of the workbench 2. A moving column 14 is fixed on the fixing block 13. The moving column 14 is slidably inserted into the connecting frame 12. A second sealing ring 15 is fixed on the outer wall of the moving column 14.

[0023] In use, the operator can first inject a certain amount of air into the air storage chamber 10 through the air intake device. Then, the magnetic ring to be tested can be placed on the top surface of the workbench 2, directly above the placement slot 1. At this time, the operator can press the mounting plate 6, which will drive the connecting column 7 to move downward on the inner wall of the air storage chamber 10. Under the action of the first sealing ring 8, the air in the air storage chamber 10 will be compressed. At this time, the compressed air will enter the connecting frame 12 through the air outlet 11, thereby pushing the moving column 14 to move, causing the two fixed blocks 13 to move closer to each other, thus testing the magnetic ring. The ring is fixed in place, and at the same time, the measuring probe 901 will contact the probe contact on the PCB board 3, so that the wire between the measuring probe 901 and the PCB board 3 forms a circuit, thereby performing the performance test of the magnetic ring. Through the cooperation of the connecting column 7, the first sealing ring 8, the fixing block 13, the moving column 14, and the second sealing ring 15, the magnetic ring can be fixed in place when the operator moves the mounting plate 6 downward, so that the magnetic ring can be kept in the middle of the workbench 2, effectively preventing the magnetic ring from shaking during the test, thereby improving the stability of the magnetic ring test and thus improving the accuracy of the magnetic ring test data.

[0024] like Figures 1-4 As shown, a rubber pad 16 is fixed to the inner wall of the fixing block 13, two limiting posts 17 are fixed to the top surface of the mounting plate 6, two limiting holes 18 are opened on the top surface of the mounting bracket 4, the limiting posts 17 are slidably inserted into the limiting holes 18, two strip grooves 19 are opened on the top surface of the workbench 2, and a sliding block 20 is fixed to the bottom surface of the fixing block 13, the sliding block 20 is slidably connected to the strip grooves 19.

[0025] During use, the rubber pad 16 increases the friction between the magnetic ring and the fixing block 13, ensuring the magnetic ring remains stable during testing and preventing direct contact between the magnetic ring and the fixing block 13, thus reducing wear and damage. The cooperation between the limiting post 17 and the limiting hole 18 makes the mounting plate 6 more stable during vertical movement, allowing the mounting plate 6 to accurately drive the measuring probe 901 to contact the PCB board 3, effectively preventing positional deviation of the measuring probe 901 and ensuring its normal operation. The cooperation between the sliding block 20 and the strip groove 19 makes the fixing block 13 more stable during movement, allowing the fixing block 13 to accurately limit and fix the magnetic ring, effectively preventing positional deviation of the fixing block 13 and improving the fixing efficiency of the magnetic ring.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, a handle 21 is fixed to the rear side of the mounting plate 6, and an anti-slip sleeve 22 is fixed to the outer wall of the handle 21. Several snap-fit ​​grooves 23 are opened on the top surface of the workbench 2, and a shielding plate 24 is snapped into the inner wall of the snap-fit ​​grooves 23.

[0027] During use, the anti-slip sleeve 22 increases the friction between the operator's hand and the handle 21, allowing the operator to move the mounting plate 6 stably via the handle 21, effectively preventing slippage and enabling the tester 9 to stably test the performance of the magnetic ring. The snap-fit ​​design of the shielding plate 24 allows the operator to easily install it according to the size of the magnetic ring, isolating it from external magnetic fields and effectively preventing interference from external magnetic fields during the magnetic ring test, thereby improving the accuracy and reliability of the magnetic ring test data.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic ring testing fixture, comprising a placement slot (1) formed on the top surface of a workbench (2), characterized in that, A PCB board (3) is placed on the inner wall of the placement slot (1). A mounting bracket (4) is fixed on the top surface of the workbench (2). Sliding slots (5) are opened on both the left and right sides of the inner wall of the mounting bracket (4). A mounting plate (6) is slidably connected to the inner wall of the sliding slot (5). A connecting post (7) is fixed on both the left and right sides of the mounting plate (6). A first sealing ring (8) is fixed on the outer wall of the connecting post (7). A tester (9) is fixed on the mounting plate (6). Several measuring probes (901) are fixed on the bottom surface of the tester (9). The inner bottom surface of the sliding slot (5) is opened. A gas storage chamber (10) is provided, and the connecting column (7) is rotatably inserted into the gas storage chamber (10). The inner wall of the gas storage chamber (10) is provided with an air outlet (11). Two connecting frames (12) are fixed on the top surface of the workbench (2). The connecting frames (12) are fixed to the inner wall of the mounting frame (4). Two fixing blocks (13) are slidably arranged on the top surface of the workbench (2). A moving column (14) is fixed on the fixing block (13). The moving column (14) is slidably inserted into the connecting frame (12). A second sealing ring (15) is fixed on the outer wall of the moving column (14).

2. The magnetic ring testing fixture according to claim 1, characterized in that: A rubber pad (16) is fixed to the inner wall of the fixing block (13).

3. The magnetic ring testing fixture according to claim 2, characterized in that: The top surface of the mounting plate (6) is fixed with two limiting posts (17), and the top surface of the mounting bracket (4) is provided with two limiting holes (18). The limiting posts (17) are slidably inserted into the limiting holes (18).

4. The magnetic ring testing fixture according to claim 3, characterized in that: The top surface of the workbench (2) has two strip grooves (19), and the bottom surface of the fixed block (13) is fixed with a sliding block (20), which is slidably connected to the strip grooves (19).

5. The magnetic ring testing fixture according to claim 1, characterized in that: A handle (21) is fixed to the rear side of the mounting plate (6), and an anti-slip sleeve (22) is fixed to the outer wall of the handle (21).

6. The magnetic ring testing fixture according to claim 4, characterized in that: The top surface of the workbench (2) is provided with several snap-fit ​​slots (23), and the inner wall of the snap-fit ​​slots (23) is snapped with a shielding plate (24).

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