High efficiency batch test system for inductance adjustable inductors

Abstract

The utility model discloses a kind of high-efficiency batch test system for inductance adjustable inductor, including testing instrument and fixture, fixture includes top plate, locating seat, elastic rubber ring, bottom plate, elastic contact piece and contact piece mounting plate, the lower surface of top plate is equipped with multiple installation counterbore, multiple locating seats are respectively installed in multiple installation counterbore, the lower surface of locating seat is equipped with installation slot, the upper surface is equipped with locating slot, the groove bottom of locating slot is equipped with multiple elastic arc piece that is projected upward and interval distribution along circumferential direction, multiple elastic rubber ring is sleeved in multiple elastic arc piece outer, the upper surface of bottom plate is installed with multiple contact piece mounting plate, multiple elastic contact pieces are installed on each contact piece mounting plate.The utility model can realize the function of batch testing to multiple inductance adjustable inductor once, significantly improve test efficiency, and realize the function that inductance adjustable inductor can be quickly disassembled and its adjusting column can be reliably positioned and facilitate adjusting inductance.

Description

Technical Field

[0001] This utility model relates to an inductor testing system, and more particularly to an efficient batch testing system for inductors with adjustable inductance. Background Technology

[0002] Inductors are widely used in the field of electromagnetic compatibility (EMC). By changing the parameters of inductors and capacitors, the suppression frequency point or frequency range of the equipment can be altered. In traditional electromagnetic testing or equipment debugging, the impedance of the equipment is difficult to measure accurately. Therefore, testers or debuggers need to adjust the parameters of inductors and capacitors based on experience. This adjustment process requires the continuous replacement of inductors and capacitors to obtain test data that meets the standards.

[0003] Assuming the capacitor has a fixed capacitance, and the device meets electromagnetic compatibility requirements by continuously changing the inductor's value, then the inductor must have a variable and stable inductance. This necessitates the use of an adjustable inductor to meet application requirements. For example... Figure 1 As shown, a typical adjustable inductor includes a housing 3, a cover plate 2, an adjusting post 5, and a toroidal inductor (not visible in the figure) placed inside the housing 3. The coil of the toroidal inductor is connected to terminals 6, which serve as the input and output terminals, respectively. The outer ends of the terminals 6 pass through corresponding through holes in the housing 3 and are located outside the housing 3. The number of terminals 6 is generally 2 (2 for differential mode inductors) or 4 (4 for common mode inductors). The lower part of the housing 3 has mounting lugs 1 on opposite sides, and the end face of the adjusting post 5 has a cutting groove 4. When adjusting the inductance, the cutting groove drives the adjusting post 5 to rotate. The adjusting post 6 drives the metal rod to rotate in contact with the outer wall of the coil of the toroidal inductor (the insulating varnish is removed from the contact part), thereby changing the number of turns of the working coil of the toroidal inductor and achieving the purpose of adjusting the inductance. Its internal structure is not related to the innovation of this application, so it is not shown in the figure and need not be described in detail.

[0004] After the aforementioned adjustable inductor is manufactured, its stability needs to be tested using a testing system. Traditional testing systems mainly consist of testing instruments and simple fixtures. The inductor is mounted on the fixture and connected to the testing instruments. The fixture is primarily used to position the adjustment column 5 to prevent it from rotating automatically during testing. This traditional testing system has the following drawbacks: it typically tests one inductor at a time, resulting in low testing efficiency. Furthermore, the simple fixtures either fix the adjustment column 5 too tightly, making adjustment difficult, or they fix it too loosely, leading to instability during testing and affecting the test results. Utility Model Content

[0005] The purpose of this invention is to provide an efficient batch testing system for inductors with adjustable inductance in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A high-efficiency batch testing system for adjustable inductance inductors includes testing instruments and fixtures. The fixtures include a top plate, positioning seats, an elastic rubber ring, a bottom plate, elastic contacts, and a contact mounting plate. The top plate, horizontally oriented, has multiple vertical mounting countersunk holes on its underside. Each mounting countersunk hole has an upward-through adjusting hole at its center bottom. Multiple positioning seats are respectively installed in corresponding mounting countersunk holes. Each positioning seat has an upward-recessed mounting groove on its underside and a downward-sloping positioning groove on its top. The mounting groove for mounting the adjustable inductance inductor has an upward-through adjusting post hole at its center bottom, extending to the center bottom of the positioning groove. The bottom of the slot has multiple upward-protruding elastic arc plates spaced apart along the circumference around the through hole of the adjusting column. Multiple elastic rubber rings are fitted over the multiple elastic arc plates. The multiple elastic arc plates are located directly below the corresponding adjusting through hole. On the horizontal base plate, multiple contact mounting plates are installed below the multiple positioning seats and are one-to-one corresponding to each other. Multiple elastic contacts are installed on each contact mounting plate. The upper end of each elastic contact has vertical elasticity, and the lower end is connected to one end of the lead wire. The other end of the lead wire is connected to the testing instrument. The top plate is located above the base plate and is connected to each other.

[0007] Preferably, in order to facilitate quick positioning of the adjustable inductance inductor, the positioning base has lug recesses on one opposite side of the mounting groove, corresponding to the mounting lugs of the adjustable inductance inductor. The positioning base also has terminal recesses on the other opposite side of the mounting groove, corresponding to the terminals of the adjustable inductance inductor. The terminal recesses are located above the corresponding elastic contacts.

[0008] Preferably, in order to facilitate a reliable connection between the positioning seat and the top plate, the top plate is provided with positioning seat connecting screw holes on both sides of each of the adjustment through holes, and the positioning seat is provided with positioning seat connecting through holes below the corresponding two positioning seat connecting screw holes. The two positioning seat connecting screws pass through the two positioning seat connecting through holes and are connected to the two positioning seat connecting screw holes.

[0009] Preferably, to improve the stability of the adjustable inductor after installation and facilitate quick disassembly, the bottom of the lug slot is provided with an upward-through lug elastic support hole. The top plate is provided with a compression spring blind hole with an open bottom above the lug elastic support hole. A lug elastic support column is installed in each lug elastic support hole, with the lower end of the lug elastic support column passing through the corresponding lug elastic support hole and the upper end having an increased outer diameter to form a large diameter section of the support column. A vertical compression spring is installed in each lug elastic support hole and the corresponding compression spring blind hole, with the upper and lower ends of the compression spring contacting the bottom of the compression spring blind hole and the large diameter section of the support column, respectively.

[0010] Preferably, to facilitate the pre-installation of the contact mounting plates and elastic contacts on the base plate and to facilitate quick connection with the top plate, the high-efficiency batch testing system for adjustable inductance inductors further includes a transverse pressure plate. The pressure plate has contact mounting slots on its underside that correspond one-to-one with the multiple contact mounting plates. The multiple contact mounting plates are respectively placed in the multiple contact mounting slots and connected to the pressure plate by contact screws. The bottom of the contact mounting slots has multiple through holes that extend upwards, and the upper ends of the multiple elastic contacts pass through the multiple through holes.

[0011] Preferably, to ensure good elasticity and ease of installation, the elastic contact includes a contact housing, a contact spring, and contact pins. The vertical contact spring is housed within the vertical contact housing. One end of the contact pin is a pointed tip, and its outer diameter increases near the other end to form a contact pin protrusion. The upper end of the first vertical contact pin is a pointed tip, and its lower end is located in the upper part of the contact housing and contacts the upper end of the contact spring. The lower end of the second vertical contact pin is a pointed tip, and its upper end is located in the lower part of the contact housing and contacts the lower end of the contact spring. Both the upper and lower ends of the contact housing are open, and their openings are bent inward to form blocking rings. The contact pin protrusions of both contact pins are located within the contact housing and are blocked by the corresponding blocking rings from detaching from the contact housing. The upper end of the first contact pin passes through the corresponding contact through hole, and the lower end of the second contact pin is connected to the corresponding lead wire.

[0012] Preferably, to achieve a better fit between the pressure plate, top plate, and bottom plate and to facilitate the lead wire routing, the bottom plate has a bottom plate groove on its upper surface, the pressure plate is located below the bottom plate groove, the top plate has a top plate groove below its lower surface, and the pressure plate is located above the bottom plate groove. One side wall of the bottom plate groove has a transverse lead wire through groove or lead wire through hole, and the pressure plate has a lead wire groove below its lower surface. Multiple lead wires are respectively placed in the lead wire grooves and pass through the corresponding lead wire through grooves or lead wire through holes.

[0013] Preferably, in order to achieve a reliable connection between the top plate, the pressure plate, and the bottom plate, two long connecting screws pass through two bottom plate connecting through holes on the bottom plate and two pressure plate connecting through holes on the pressure plate, respectively, and then connect to two top plate connecting screw holes on the top plate.

[0014] Preferably, for reliable pre-connection between the pressure plate and the base plate, four short connecting screws pass through the four vertical through holes on the pressure plate and are connected to the four base plate connecting screw holes on the base plate.

[0015] Preferably, in order to prevent the elastic rubber ring from detaching, the upper end of the elastic arc sheet is provided with a blocking boss that protrudes outward and is used to prevent the elastic rubber ring from detaching from the elastic arc sheet.

[0016] The beneficial effects of this utility model are as follows: This invention utilizes a combined clamp design comprising a top plate, a positioning seat, an elastic rubber ring, a bottom plate, elastic contacts, and a contact mounting plate. This design enables the clamping of multiple adjustable inductors for testing at once, allowing for batch testing of multiple adjustable inductors simultaneously. This significantly improves testing efficiency. Furthermore, the positioning seat mounts the adjustable inductors, while multiple elastic arc plates and the elastic rubber ring reliably position the adjusting column of the adjustable inductor, allowing for rotational adjustment with slight force. The contact mounting plate and elastic contacts enable rapid electrical connection to the adjustable inductors. Ultimately, this design allows for quick assembly and disassembly of adjustable inductors, reliable positioning of their adjusting columns, and easy adjustment of inductance, thus improving testing efficiency while ensuring testing effectiveness. Attached Figure Description

[0017] Figure 1 This is a 3D diagram of a typical adjustable inductor. Figure 2 This is a top-view perspective view of the high-efficiency batch testing system for adjustable inductors described in this utility model after assembly. Figure 3 This is a top-view perspective view of the efficient batch testing system for adjustable inductors described in this utility model before assembly. Figure 4 yes Figure 3 Enlarged image of the letter "A" in the image; Figure 5 This is a bottom-view perspective view of the high-efficiency batch testing system for adjustable inductors described in this utility model before assembly. Figure 6 yes Figure 5 A magnified view of the letter "B" in the image; Figure 7 This is a top perspective view of the positioning base of the high-efficiency batch testing system for adjustable inductors described in this utility model; Figure 8 This is a bottom perspective view of the positioning base of the high-efficiency batch testing system for adjustable inductors described in this utility model. Figure 9 This is a front view of the elastic contact component of the high-efficiency batch testing system for adjustable inductors described in this utility model. Figure 10 yes Figure 9 CC section view in the image. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings: like Figures 2-9 As shown, the high-efficiency batch testing system for adjustable inductors of this utility model includes testing instruments (not shown in the figure, unrelated to the innovation of this utility model) and fixtures. The fixtures include a top plate 8, positioning seats 11, elastic rubber rings 17, a bottom plate 9, elastic contacts (refer to the contact housing 24, contact spring 39, and contact pin 23 described below) and a contact mounting plate 12. The top plate 8 has multiple vertical mounting countersunk holes 25 on its underside. Each mounting countersunk hole 25 has an upward-through adjustment hole 10 at its center. Multiple positioning seats 11 are respectively installed in the corresponding mounting countersunk holes 25. The positioning seats 11 have an upward-recessed mounting groove 37 on their underside and a downward-sunken positioning groove 35 on their top, for mounting adjustable inductors (refer to...). Figure 1 The mounting groove 37 has an adjustment column through hole (not visible in the figure) at the center of the bottom of the groove, which extends upward to the center of the bottom of the positioning groove 35. In the bottom of the positioning groove 35, around the adjustment column through hole, there are multiple (three in the figure) upwardly protruding elastic arc plates 18 spaced apart in the circumferential direction. The multiple elastic arc plates 18 together form a vertical through hole that communicates with the adjustment column through hole. Multiple elastic rubber rings 17 are fitted around the multiple elastic arc plates 18. The multiple elastic arc plates 18 are located directly below the corresponding adjustment through holes 10. On the horizontal base plate 9, there are multiple contact mounting plates 12 located below the multiple positioning seats 11 and corresponding to each other. Multiple elastic contacts are installed on each contact mounting plate 12. The upper end of each elastic contact has vertical elasticity, and the lower end is connected to one end of the lead wire 7. The other end of the lead wire 7 is connected to the test instrument. The top plate 8 is located above the base plate 9 and is connected to each other.

[0019] like Figures 2-9 As shown, this utility model also discloses the following more optimized specific structures: To facilitate rapid positioning of the adjustable inductance inductor, the positioning base 11 has mounting lugs (see reference) on opposite sides of the mounting groove 37 on its underside. Figure 1 The mounting lug 1) corresponds to the lug recess 36. The positioning seat 11, located on the other two opposite sides of the mounting groove 37, has terminals for the adjustable inductance inductor (see reference). Figure 1 The terminal slot 38 corresponding to the terminal 6) is located above the corresponding elastic contact.

[0020] To facilitate a reliable connection between the positioning seat 11 and the top plate 8, the top plate 8 is provided with positioning seat connecting screw holes (not marked in the figure) on the upper part of each adjustment through hole 10 on both sides. The positioning seat 11 is provided with positioning seat connecting through holes 19 below the corresponding two positioning seat connecting screw holes. The two positioning seat connecting screws 21 pass through the two positioning seat connecting through holes 19 and are connected to the two positioning seat connecting screw holes.

[0021] To improve the stability and facilitate quick disassembly of the adjustable inductor after installation, the bottom of the lug slot 36 is provided with an upward-through lug elastic support hole 20. The top plate 8 is provided with a compression spring blind hole (not visible in the figure) with an open bottom located above the lug elastic support hole 20. A lug elastic support column 16 is installed in each lug elastic support hole 20, with the lower end of the lug elastic support column 16 passing through the corresponding lug elastic support hole 20 and the upper end having an increased outer diameter to form a large diameter section of the support column (not marked in the figure). A vertical compression spring 15 is installed in each lug elastic support hole 20 and the corresponding compression spring blind hole. The upper and lower ends of the compression spring 15 are in contact with the bottom of the compression spring blind hole and the large diameter section of the support column, respectively.

[0022] To facilitate the pre-installation of the contact mounting plates 12 and elastic contacts on the base plate 9 and their quick connection with the top plate 8, the high-efficiency batch testing system for adjustable inductance inductors also includes a transverse pressure plate 14. The pressure plate 14 has contact mounting slots 28 corresponding to the multiple contact mounting plates 12. The multiple contact mounting plates 12 are placed within the multiple contact mounting slots 28 and connected to the pressure plate 14 by contact screws 34 (specifically, the contact screws 34 pass through the corresponding through holes on the contact mounting plates 12 and connect to the screw holes on the bottom of the contact mounting slots 28). The bottom of the contact mounting slots 28 has multiple upward-through holes (four in the figure, corresponding to...). Figure 1 (Corresponding to the four terminals 6) Contact through holes 22, the upper ends of the multiple elastic contacts respectively pass through the multiple contact through holes 22.

[0023] To ensure good elasticity and ease of installation, the elastic contact includes a contact housing 24, a contact spring 39, and a contact pin 23. The vertical contact spring 39 is placed inside the vertical contact housing 24. One end of the contact pin 23 is a pointed tip, and the outer diameter near the other end increases to form a contact pin protrusion ring (not marked in the figure). The upper end of the first vertical contact pin 23 is a pointed tip, and the lower end is placed in the upper part of the contact housing 24 and contacts the upper end of the contact spring 39. The lower end of the second vertical contact pin 23 is a pointed tip, and the upper end is placed in the lower part of the contact housing 24 and contacts the lower end of the contact spring 39. The upper and lower ends of the contact housing 24 are open, and the openings are bent inward to form a blocking ring (not marked in the figure). The contact pin protrusion rings of both contact pins 23 are located inside the contact housing 24 and are blocked by the corresponding blocking rings from detaching from the contact housing 24. The upper end of the first contact pin 23 passes through the corresponding contact through hole 22, and the lower end of the second contact pin 23 is connected to the corresponding lead wire 7.

[0024] To achieve a better fit between the pressure plate 14, the top plate 8, and the bottom plate 9, and to facilitate the lead wires 7, the bottom plate 9 has a bottom plate groove 13 on its upper surface, and the pressure plate 14 is located inside the bottom plate groove 13. The top plate 8 has a top plate groove 26 on its lower surface, and the pressure plate 14 is located inside the bottom plate groove 26 on its upper surface. One side wall of the bottom plate groove 13 has a transverse lead wire through groove 33 (or lead wire through hole), and the pressure plate 14 has a lead wire groove (not marked in the figure) on its lower surface. Multiple lead wires 7 are placed in the lead wire grooves and pass through the corresponding lead wire through grooves 33 (or lead wire through holes).

[0025] In order to achieve a reliable connection between the top plate 8, the pressure plate 14 and the bottom plate 9, two long connecting screws (not shown in the figure) pass through the two bottom plate connecting through holes 31 on the bottom plate 9 and the two pressure plate connecting through holes 29 on the pressure plate 14 and are connected to the two top plate connecting screw holes 27 on the top plate 8.

[0026] For a reliable pre-connection between the pressure plate 14 and the base plate 9, four short connecting screws (not shown in the figure) pass through the four vertical through holes 30 on the pressure plate 14 and are connected to the four base plate connecting screw holes 32 on the base plate 9.

[0027] To prevent the elastic rubber ring 17 from detaching, the upper end of the elastic arc plate 18 is provided with an outwardly protruding blocking boss (not marked in the figure) to prevent the elastic rubber ring 17 from detaching from the elastic arc plate 18.

[0028] Combination Figures 1-10Before testing, multiple positioning seats 11 are installed in multiple mounting recesses 25 of the top plate 8, multiple contact mounting plates 12 and multiple elastic contacts are installed in the contact mounting grooves 28 of the pressure plate 14, and the pressure plate 14 is connected to the bottom plate 9, thus forming two components that are not yet connected to each other. When preparing for testing, the housings 3 of multiple adjustable inductors to be tested are placed in multiple mounting grooves 37 of the positioning seats 11, and the mounting lugs 1 of each adjustable inductor are placed in the corresponding lug recesses 36, and the terminals 6 of each adjustable inductor are placed in the corresponding recesses 36. The terminal recess 38 is filled with the adjusting post 5 of each adjustable inductor, which passes upward through the corresponding adjusting post through hole and the through hole between multiple elastic arc plates 18 and is placed in the lower part of the corresponding adjusting through hole 10. At this time, the elastic contraction force generated by multiple elastic rubber rings 17 on multiple elastic arc plates 18 allows the adjusting post 5 to maintain a stable state and also to achieve the function of rotating and adjusting the inductance when the operator rotates the adjusting post 5. Then, the lower component is moved from bottom to top, so that the top of the pressure plate 14 enters the top plate recess 26 of the top plate 8 until the lower edge of the top plate 8 and the upper edge of the bottom plate 9 are aligned. Until the edges are in tight contact, the two long connecting screws are passed through the two bottom plate connecting through holes 31 on the bottom plate 9 and the two pressure plate connecting through holes 29 on the pressure plate 14, and then connected to the two top plate connecting screw holes 27 on the top plate 8, so as to achieve a reliable connection between the upper and lower components. Then, all the leads 7 are connected to the corresponding terminals of the test instrument. At this time, the upper part of the mounting lug 1 of the adjustable inductance is elastically pressed downward by the lug elastic support column 16, and the lower part is pressed by the pressure plate 14, thereby achieving a reliable positioning function. The lower parts of the multiple terminals 6 of the adjustable inductance are respectively elastically connected to the corresponding terminals. Multiple contact pins 23 of the contact element elastically press upwards, thereby enabling quick connection between multiple terminals 6 and corresponding leads 7 and testing instruments; then testing can begin. During the testing process, if it is necessary to change the inductance, the operator holds a screwdriver and places it into the screwdriver slot 4 on the adjusting column 5 through the adjusting through hole 10 on the top plate 8, and rotates the adjusting column 5 with a little force to achieve the inductance adjustment function of the corresponding inductor; after adjustment, the adjusting column 5 remains stable under the elastic contraction force of multiple elastic rubber rings 17, ensuring stability during testing and improving test reliability.

[0029] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A high-efficiency batch testing system for inductors with adjustable inductance, comprising testing instruments and fixtures, characterized in that: The fixture includes a top plate, positioning seats, an elastic rubber ring, a bottom plate, elastic contacts, and a contact mounting plate. The top plate, which is horizontal, has multiple vertical mounting countersunk holes on its underside. Each mounting countersunk hole has an upward-through adjusting hole at its center. Multiple positioning seats are respectively installed in corresponding mounting countersunk holes. Each positioning seat has an upward-recessed mounting groove on its underside and a downward-sloping positioning groove on its top. The mounting groove for mounting the adjustable inductance inductor has an upward-through adjusting post hole at its center, extending to the center of the bottom of the positioning groove. The bottom of the positioning groove is located around the adjusting post hole. The surrounding area is provided with multiple upwardly protruding elastic arc plates spaced apart along the circumference. Multiple elastic rubber rings are fitted over the multiple elastic arc plates. The multiple elastic arc plates are located directly below the corresponding adjustment through holes. On the horizontal base plate, multiple contact mounting plates are installed below the multiple positioning seats and are one-to-one corresponding to each other. Multiple elastic contacts are installed on each contact mounting plate. The upper end of each elastic contact has vertical elasticity, and the lower end is connected to one end of the lead wire. The other end of the lead wire is connected to the testing instrument. The top plate is located above the base plate and is connected to each other.

2. The high-efficiency batch testing system for adjustable inductors according to claim 1, characterized in that: The positioning base has lug recesses on one opposite side of the mounting groove, corresponding to the mounting lugs of the adjustable inductance inductor. The positioning base also has terminal recesses on the other opposite side of the mounting groove, corresponding to the terminals of the adjustable inductance inductor. The terminal recesses are located above the corresponding elastic contact.

3. The high-efficiency batch testing system for adjustable inductors according to claim 2, characterized in that: The top plate is provided with positioning seat connecting screw holes on both sides of each of the adjustment through holes. The positioning seat is provided with positioning seat connecting through holes below the corresponding two positioning seat connecting screw holes. The two positioning seat connecting screws pass through the two positioning seat connecting through holes and are connected to the two positioning seat connecting screw holes.

4. The high-efficiency batch testing system for adjustable inductors according to claim 3, characterized in that: The bottom of the lug sinker is provided with an upward-through lug elastic support hole. The top plate is provided with a compression spring blind hole with an open bottom above the lug elastic support hole. A lug elastic support column is installed in each lug elastic support hole, and the lower end of the lug elastic support column passes through the corresponding lug elastic support hole, while the upper end has an increased outer diameter to form a large diameter section of the support column. A vertical compression spring is installed in each lug elastic support hole and the corresponding compression spring blind hole. The upper and lower ends of the compression spring contact the bottom of the compression spring blind hole and the large diameter section of the support column, respectively.

5. The high-efficiency batch testing system for adjustable inductors according to any one of claims 1-4, characterized in that: The high-efficiency batch testing system for adjustable inductance inductors also includes a horizontal pressure plate. The pressure plate has contact mounting slots on its underside that correspond one-to-one with the multiple contact mounting plates. The multiple contact mounting plates are placed in the multiple contact mounting slots and connected to the pressure plate by contact screws. The bottom of the contact mounting slots has multiple through holes that extend upwards. The upper ends of the multiple elastic contacts pass through the multiple through holes.

6. The high-efficiency batch testing system for adjustable inductance inductors according to claim 5, characterized in that: The elastic contact includes a contact housing, a contact spring, and contact pins. The vertical contact spring is placed inside the vertical contact housing. One end of the contact pin is a pointed tip, and the outer diameter near the other end increases to form a contact pin protrusion. The upper end of the first vertical contact pin is a pointed tip, and the lower end is placed in the upper part of the contact housing and contacts the upper end of the contact spring. The lower end of the second vertical contact pin is a pointed tip, and the upper end is placed in the lower part of the contact housing and contacts the lower end of the contact spring. The upper and lower ends of the contact housing are both open, and their openings are bent inward to form blocking rings. The contact pin protrusions of both contact pins are located inside the contact housing and are blocked by the corresponding blocking rings from detaching from the contact housing. The upper end of the first contact pin passes through the corresponding contact through hole, and the lower end of the second contact pin is connected to the corresponding lead wire.

7. The high-efficiency batch testing system for adjustable inductance inductors according to claim 5, characterized in that: The bottom plate has a bottom plate groove on its upper surface, the pressure plate is located below the bottom plate groove, the top plate has a top plate groove on its lower surface, and the pressure plate is located above the bottom plate groove. One side wall of the bottom plate groove has a transverse lead wire through groove or lead wire through hole. The pressure plate has a lead wire groove on its lower surface. Multiple lead wires are placed in the lead wire grooves and pass through the corresponding lead wire through grooves or lead wire through holes.

8. The high-efficiency batch testing system for adjustable inductance inductors according to claim 5, characterized in that: Two long connecting screws pass through the two bottom plate connecting through holes on the bottom plate and the two pressure plate connecting through holes on the pressure plate, respectively, and then connect to the two top plate connecting screw holes on the top plate.

9. The high-efficiency batch testing system for adjustable inductance inductors according to claim 5, characterized in that: Four short connecting screws pass through the four vertical through holes on the pressure plate and are connected to the four base plate connecting screw holes on the base plate.

10. The high-efficiency batch testing system for adjustable inductors according to any one of claims 1-4, characterized in that: The upper end of the elastic arc sheet is provided with an outwardly protruding blocking boss for preventing the elastic rubber ring from detaching from the elastic arc sheet.

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