Inductance test fixing clamp

Abstract

The utility model belongs to the technical field of inductance testing, and particularly relates to an inductance testing fixing clamp which comprises a machine body, a rectangular digging hole is formed in one side of the machine body, a first handle is inserted in the rectangular digging hole, a steering rod is welded to one end of the first handle, and a sliding block is connected to the exterior of the steering rod in a surrounding mode. The clamping structure is additionally arranged, the inductance element is inserted between the supporting plate and the clamping plate, the clamping structure is started in the mode that the connecting shaft is pulled by the spring, and clamping operation on the inductance element is achieved; through the design below the clamping structure, the position of the clamping structure can be finely adjusted on the operation table, and the inductance element and the detection device can be aligned and fixed at the same time; through the design, the stability and accuracy of the clamp are improved, so that the situation of large detection data error caused by the fact that the clamp cannot stabilize the element is avoided; through the design that the sliding groove is formed in the sliding block, the position of the clamping structure is adjusted according to needs, and the fixing and clamping operation of inductance elements of different sizes is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of inductance testing, in particular to an inductance testing fixing fixture. Background Art

[0002] Inductance testing is a process used to measure the performance parameters of inductors to ensure the normal operation of circuits. Inductors are important components in circuits. They can store electrical energy and play an important role in electronic circuits, such as filtering, transformers, and power supplies. The purpose of inductance testing is to measure the self-inductance, mutual inductance, quality factor, rated current, DC impedance, and the size, temperature resistance, and solderability of the inductor package. In order to maintain the accuracy and stability of the test data during inductance testing, it is generally necessary to use a fixing fixture to fix the component.

[0003] The inductance test fixture is a device used to fix the inductance component to be tested; its main function is to ensure that the inductance component maintains a stable position during the test process to obtain accurate test results; its structure mainly includes a clamping device, a positioning component, an insulating component and a fixing device. Its principle is to clamp the component by the clamping device, ensure that the component is in the accurate position of the fixture by the positioning component, and finally fix the position of the component by the fixing device;

[0004] A magnetic ring inductance test fixing device with announcement number CN 220305390 U includes a fixing plate; a symmetrically arranged telescopic cylinder is arranged on the fixing plate; the output ends of the telescopic cylinders are fixedly connected to moving blocks; a slot body is opened in the moving blocks; a bidirectional screw rod is rotatably connected in the slot body, and one end of the bidirectional screw rod passes through the side wall of the slot body; the chuck can accurately fix the magnetic ring, and the corresponding four points of the magnetic ring are clamped by four chucks at the same time, which increases the stability of the clamping and solves the problem in the prior art that the fixing pin and the second through hole are used to cooperate to adjust the distance between the clamping plates, resulting in a certain precision error in the clamping of the magnetic ring by the clamping plate, and the magnetic ring cannot be fixed well. Secondly, the clamping plate can only clamp two points of the magnetic ring, and the fixing effect is poor and the practicality is low.

[0005] The existing fixing fixture will have problems of unstable clamping and inaccurate positioning when fixing the PCB board, which will cause large errors in the test result parameters; and the existing fixing fixture cannot cope with the fixing operation of PCB boards of different sizes, which will lead to a decrease in detection efficiency. Therefore, an inductance test fixing fixture is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and address the problems existing in the prior art equipment, the utility model provides an inductance test fixing fixture.

[0007] The utility model solves the technical problem by adopting a technical solution that is an inductance test fixing fixture, comprising a fuselage, a rectangular hole is opened on one side of the fuselage, a No. 1 handle is inserted in the rectangular hole, a steering rod is welded at one end of the No. 1 handle, a slider is connected around the outside of the steering rod, a hole is opened on the top of the slider, a clamping structure is arranged inside the hole, the clamping structure comprises a second support plate, a first support plate is welded on the top of the second support plate, a transmission plate is arranged on one side of the first support plate, the transmission plate is connected by a pad and connected to the first support plate by a No. 3 positioning shaft, a clamping plate is inserted on both sides of one end of the transmission plate, a No. 1 positioning shaft is arranged on one side of the clamping plate, and the clamping plate is connected to the transmission plate through the No. 1 positioning shaft; a stretching rod is inserted on both sides of the other end of the transmission plate, the stretching rod is connected to the transmission plate by the No. 2 positioning shaft, a limiting ring is arranged on the outside of the stretching rod, one end of the limiting ring is welded on one side of the first support plate, a guide head is arranged on the top of the stretching rod, a through hole is opened in the center of the guide head, and a connecting shaft is arranged inside the through hole, so that the structure can clamp the element.

[0008] Preferably, a No. 2 handle is provided on one side of the fuselage, and the No. 2 handle passes through the fuselage and is welded with a drive shaft. A transmission belt is arranged around the outside of the drive shaft, and a transmission shaft is provided at the center of the other end of the transmission belt. A transmission rod is welded at the center of the transmission shaft, and a spiral pattern is provided on the outside of the transmission rod. A sliding platform is provided on the outside of the transmission rod, and a threaded hole is provided inside the sliding platform, and the diameter of the threaded hole is consistent with the diameter of the spiral pattern; a through hole is provided at the top of the sliding platform, and fixing grooves are welded at both ends of the through hole, and a threaded through hole is provided at the top of the fixing groove, and the diameter of the threaded through hole is consistent with the diameter of the steering rod; a sliding block is provided at the top of the sliding block, and grooves are provided on both sides of the sliding block, and the diameter of the grooves is consistent with the diameter of the grooves inside the sliding block; the components are positioned by this structure.

[0009] Preferably, there is a gap between the limit ring and the stretching rod; a row of insulating clamps is provided on the top of the clamp; the diameter of the internal threaded hole of the slider is consistent with the diameter of the external thread of the steering rod; a spring is provided on one side of the fuselage, and a connecting shaft is welded to the other end of the spring; a display is provided on the other side of the fuselage, and the display is connected to the detection device signal; this design increases the continuity and stability of the device.

[0010] The utility model is beneficial in that:

[0011] The utility model adds a clamping structure, inserts the inductance element between the support plate and the clamping plate, and activates the clamping structure by pulling the connecting shaft with a spring, thereby realizing the clamping operation of the inductance element; through the design below the clamping structure, the position of the clamping structure can be fine-tuned on the operating table, and the inductance element can be aligned and fixed with the detection device at the same time; the above-mentioned design increases the stability and accuracy of the clamp itself, thereby avoiding the situation where the error of the detection data is large due to the inability of the clamp to stabilize the element; through the design of providing a slide groove inside the slider, the position of the clamping structure can be adjusted as needed, thereby coping with the fixed clamping operation of inductance elements of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of the overall structure of the device;

[0014] Figure 2 is a schematic diagram of the fixing fixture structure;

[0015] Figure 3 is a schematic diagram of the clamping structure;

[0016] Figure 4 for Figure 3 The structural diagram at A in the middle;

[0017] In the figure: 1. body; 2. rectangular hole; 3. handle number one; 4. handle number two; 5. display; 6. operating table; 7. spring; 8. drive shaft; 9. spiral pattern; 10. transmission belt; 11. transmission shaft; 12. transmission rod; 13. sliding table; 14. steering rod; 15. slider; 16. fixing groove; 17. first support plate; 18. clamping plate; 19. positioning shaft number one; 20. guide head; 21. connecting shaft; 22. limiting ring; 23. stretching rod; 24. positioning shaft number two; 25. transmission plate; 26. positioning shaft number three; 27. pad; 28. second support plate; 29. ​​insulating clamping plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 As shown, an inductance test fixture comprises a body 1, a rectangular hole 2 is opened on one side of the body 1, a No. 1 handle 3 is inserted inside the rectangular hole 2, a steering rod 14 is welded at one end of the No. 1 handle 3, a slider 15 is connected around the outside of the steering rod 14, a hole is opened on the top of the slider 15, a clamping structure is arranged inside the hole, the clamping structure comprises a second support plate 28, a first support plate 17 is welded on the top of the second support plate 28, a transmission plate 25 is arranged on one side of the first support plate 17, the transmission plate 25 is connected by a pad 27 and connected to the first support plate 17 by a No. 3 positioning shaft 26, a clamping plate 18 is inserted on both sides of one end of the transmission plate 25, a No. 1 positioning shaft 19 is arranged on one side of the clamping plate 18, and the clamping plate 18 is connected to the transmission plate 25 through the No. 1 positioning shaft 19; a stretching rod 23 is inserted on both sides of the other end of the transmission plate 25, and the stretching rod 23 is connected by a No. 2 positioning shaft 24 is connected to the transmission plate 25, the outer part of the stretching rod 23 is provided with a limit ring 22, one end of the limit ring 22 is welded to one side of the first support plate 17, the top of the stretching rod 23 is provided with a guide head 20, the center of the guide head 20 is provided with a through hole, and the inside of the through hole is provided with a connecting shaft 21; when the fixing and clamping operation before testing the inductor element is performed, the operator adjusts the spacing of the second support plate 28 according to the size of the tested inductor element, then opens the first support plate 17, and puts the edge of the inductor element between the support plate 7 and the clamping plate 18, and then releases the first support plate 17. At this time, under the influence of the spring 7, the connecting head 21 pulls the guide head 20, and the stretching rod 23 is pulled up and drives the bottom end of the transmission plate 25 to rise. At this time, the side relative to the top of the transmission plate 25 starts to rotate and rise with the third positioning axis 26 as the center. Under the push of the transmission plate 25, the clamping plate 18 starts to rise, thereby clamping the inductor element.

[0020] A second handle 4 is provided on one side of the fuselage 1, and a drive shaft 8 is welded inside the fuselage 1. A transmission belt 10 is arranged around the outside of the drive shaft 8, and a transmission shaft 11 is provided at the center of the other end of the transmission belt 10, and a transmission rod 12 is welded at the center of the transmission shaft 11. A spiral pattern 9 is provided on the outside of the transmission rod 12, and a sliding platform 13 is provided on the outside of the transmission rod 12. A threaded hole is provided inside the sliding platform 13, and the diameter of the threaded hole is consistent with the diameter of the spiral pattern 9; a through hole is provided at the top of the sliding platform 13, and fixing grooves 16 are welded at both ends of the through hole, and a threaded through hole is provided at the top of the fixing groove 16, and the diameter of the threaded through hole is consistent with the diameter of the steering rod 14; the top of the sliding platform 13 A slider 15 is provided, and grooves are provided on both sides of the slider 15, and the grooves have the same diameter as the grooves inside the sliding table 13; when the clamping operation of the inductor element is completed, the operator rotates the No. 2 handle, and the driving shaft 8 starts to rotate, and drives the transmission belt 10 to make the transmission shaft 11 rotate in the same direction. At this time, the sliding table 13 located outside the transmission rod 12 starts to move forward under the push of the spiral pattern 9. When it reaches the predetermined position, an operator rotates the No. 1 handle 3, and the slider 15 starts to move along the trajectory of the sliding table 13 under the push of the transmission rod 14. Then, the center of the inductor element is aligned with the receiving end of the detection device by rotating the No. 1 handle 3 and the No. 2 handle 4, thereby completing the fixed clamping operation of the inductance test.

[0021] Working principle: when the inductor element is fixed and clamped before testing, the operator adjusts the spacing of the second support plate 28 according to the size of the inductor element to be tested, then opens the first support plate 17, and puts the edge of the inductor element between the support plate 7 and the clamping plate 18, and then releases the first support plate 17. At this time, under the influence of the spring 7, the connector 21 pulls the guide head 20, and the stretching rod 23 is pulled up and drives the bottom end of the transmission plate 25 to rise. At this time, the side relative to the top of the transmission plate 25 starts to rotate and rise with the third positioning axis 26 as the center. Under the push of the transmission plate 25, the clamping plate 18 starts to rise, and thus Clamp the inductor element; when the clamping operation of the inductor element is completed, the operator turns the No. 2 handle, at which time the drive shaft 8 starts to rotate, and drives the transmission belt 10 to make the transmission shaft 11 rotate in the same direction. At this time, the sliding table 13 located outside the transmission rod 12 starts to move forward under the push of the spiral pattern 9. When it reaches the predetermined position, an operator rotates the No. 1 handle 3, at which time the slider 15 starts to move along the trajectory of the sliding table 13 under the push of the transmission rod 14. Then, by turning the No. 1 handle 3 and the No. 2 handle 4, the center of the inductor element is aligned with the receiving end of the detection device, thereby completing the fixed clamping operation of the inductance test.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An inductance test fixture, characterized in that: The invention comprises a body (1), a rectangular hole (2) is formed on one side of the body (1), a handle (3) is inserted into the rectangular hole (2), a steering rod (14) is welded to one end of the handle (3), a slider (15) is connected to the outside of the steering rod (14), a hole is formed on the top of the slider (15), a clamping structure is provided inside the hole, the clamping structure comprises a second support plate (28), a first support plate (17) is welded to the top of the second support plate (28), a transmission plate (25) is provided on one side of the first support plate (17), the transmission plate (25) is connected by a pad (27) and is connected to the first support plate (17) by a third positioning shaft (26), A clamping plate (18) is inserted on both sides of one end of the transmission plate (25), and a first positioning shaft (19) is provided on one side of the clamping plate (18), and the clamping plate (18) is connected to the transmission plate (25) via the first positioning shaft (19); a stretching rod (23) is inserted on both sides of the other end of the transmission plate (25), and the stretching rod (23) is connected to the transmission plate (25) via a second positioning shaft (24), and a limiting ring (22) is provided on the outside of the stretching rod (23), and one end of the limiting ring (22) is welded to one side of the first support plate (17), and a guide head (20) is provided at the top end of the stretching rod (23), and a through hole is opened at the center of the guide head (20), and a connecting shaft (21) is provided inside the through hole.

2. The inductance test fixture according to claim 1, characterized in that: A second handle (4) is provided on one side of the machine body (1), the second handle (4) passes through the machine body (1) and a drive shaft (8) is welded thereto, a transmission belt (10) is arranged around the outside of the drive shaft (8), a transmission shaft (11) is arranged at the center of the other end of the transmission belt (10), a transmission rod (12) is welded at the center of the transmission shaft (11), a spiral pattern (9) is arranged on the outside of the transmission rod (12), a sliding platform (13) is arranged on the outside of the transmission rod (12), a threaded hole is arranged inside the sliding platform (13), and the diameter of the threaded hole is consistent with the diameter of the spiral pattern (9).

3. The inductance test fixture according to claim 1, characterized in that: There is a gap between the limiting ring (22) and the stretching rod (23).

4. The inductance test fixture according to claim 1, characterized in that: A row of insulating clamping plates (29) is provided at the top of the clamping plate (18).

5. The inductance test fixture according to claim 1, characterized in that: The diameter of the internal threaded hole of the slider (15) is consistent with the diameter of the external threaded hole of the steering rod (14).

6. The inductance test fixture according to claim 1, characterized in that: A spring (7) is provided on one side of the body (1), and a connecting shaft (21) is welded to the other end of the spring (7).

7. The inductance test fixture according to claim 2, characterized in that: The sliding block (15) has grooves on both sides, and the grooves have the same diameter as the grooves inside the sliding table (13).

8. The inductance test fixture according to claim 1, characterized in that: A display (5) is provided on the other side of the body (1), and the display (5) is connected to the detection device by signal.

9. The inductance test fixture according to claim 2, characterized in that: A sliding block (15) is provided at the top of the sliding platform (13).

10. The inductance test fixture according to claim 2, characterized in that: The sliding platform (13) has a through hole at the top end, and fixing grooves (16) are welded at both ends of the through hole. The fixing groove (16) has a threaded through hole at the top end, and the diameter of the threaded through hole is consistent with the diameter of the steering rod (14).

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