CN217085125U - Electrical property test refitting jig of hollow coil inductor - Google Patents

Abstract

The application provides an electrical performance test refitting jig of an air-core coil inductor, wherein the air-core coil inductor comprises a coil body and two pins connected to the coil body, the coil body is in a hollow cylindrical shape, the two pins are connected to the edge of one side of the coil body and are bent from the edge to the center direction to form a hook-shaped structure with an opening, the electrical performance test jig comprises a workbench, and two conductive contacts are adjacently arranged on the workbench; an insulating compact configured to: the first side of insulating briquetting is used for inserting in the opening of colluding the column structure to make the coil body supported on insulating briquetting, insulating briquetting still is used for keeping pressing of two pins one-to-one that are located self below on two conductive contact, in order to carry out the electrical property test. The application provides an electrical property test repacking tool can make the difficult emergence of coil part of air core coil inductor warp when the test, improves electrical property test result accuracy.

Description

Electrical property test refitting jig of hollow coil inductor

Technical Field

The application belongs to the technical field of test fixtures, and particularly relates to an electrical property test refitting fixture of an air-core coil inductor.

Background

The air-core coil radio frequency inductor has the characteristics of small inductance (nH level), high quality factor, high self-resonant frequency and the like, and is mainly applied to the fields of communication, automobiles, aerospace and the like. In order to ensure that the electrical property parameter indexes of the inductor are qualified, the electrical property test is one of essential process procedures in the production and preparation process of the inductor, and the inductor with unqualified electrical property can be exposed in advance so as to ensure the reliability and stability of the inductor product leaving the factory.

At present, with the increasing demand of the market for different kinds of inductors, some air-core coil inductors of new structures have appeared. However, the traditional electrical property test fixture cannot adapt to the hollow coil inductor with the novel structure, the coil part of the hollow coil inductor with the novel structure is easy to deform during testing, so that a large error exists in a test result, and the electrical property test result of the hollow coil inductor with the novel structure is inaccurate.

SUMMERY OF THE UTILITY MODEL

The application provides an electrical property test repacking tool of air core coil inductor can make the difficult emergence of coil part of air core coil inductor warp, improves electrical property test result accuracy.

In order to solve the above problems, the technical scheme provided by the application is as follows: an electrical property test refitting jig of an air-core coil inductor comprises a coil body and two pins connected to the coil body, wherein the coil body is in a hollow cylindrical shape, the two pins are connected to the edge of one side of the coil body and are bent from the edge to the center direction to form a hook-shaped structure with an opening, the electrical property test jig comprises a workbench, and two conductive contacts are adjacently arranged on the workbench; the insulating compact is configured to: the first side of the insulation pressing block is used for being inserted into the opening of the hook-shaped structure, the coil body is supported on the insulation pressing block, and the insulation pressing block is further used for pressing and keeping the two pins located below the insulation pressing block on the two conductive contacts in a one-to-one correspondence mode so as to perform electrical performance testing.

In a possible design, the upper surface of the insulating pressing block is provided with a U-shaped positioning groove, an opening of the U-shaped positioning groove penetrates through the edge of the first side portion, the U-shaped positioning groove is used for accommodating and positioning the coil body, and the two pins extend out of the opening of the U-shaped positioning groove and extend to the lower side of the insulating pressing block.

In a possible design, a U-shaped notch is formed in the bottom wall of the U-shaped positioning groove, the U-shaped notch penetrates through the edge of the first side portion, and the two pins are pressed by the bottom walls of the two portions on the two sides of the U-shaped notch in a one-to-one correspondence mode.

In a possible design, one the conductive contact is ring-shaped structure and is attached to the workbench, the other conductive contact is disc-shaped structure and is located inside the ring-shaped structure, the ring-shaped structure and the disc-shaped structure are concentrically arranged, and the workbench is further provided with an insulating ring which is located between the two ring-shaped structures and the disc-shaped structure and is electrically insulated.

In a possible design, the workbench is provided with an insulating plate covering the two conductive contacts, and the insulating plate is provided with two conductive through holes for the pins to extend into and be electrically connected with the conductive contacts.

In a possible design, a groove is formed in the workbench, the insulating plate covers the bottom wall of the groove, a positioning convex column is arranged on the bottom wall of the groove, and the positioning convex column is inserted into a positioning hole formed in the insulating plate.

In a possible design, electrical property test repacking tool still includes elevating gear, elevating gear includes supporting seat, well post and handle, the supporting seat is located telescopic hole that link up from top to bottom has on the workstation, locating of well post liftable in the telescopic hole, the upper end of well post stretches out the supporting seat and with the handle links to each other, the lower extreme of well post stretches out the supporting seat and with insulating briquetting links to each other, the handle passes through well post drives insulating briquetting goes up and down.

In a possible design, the lifting device further comprises a U-shaped connecting plate, the upper end of the middle column piece is connected with the bottom surface of the U-shaped connecting plate, the middle part of the handle is hinged in an opening of the U-shaped connecting plate, one end of the handle is a free end, and the other end of the handle is in rolling abutting joint with the upper surface of the supporting seat through a roller.

In a possible design, the lifting device further comprises a positioning pin, the positioning pin is arranged at the upper end of the support seat, the middle column extends out of the upper end of the support seat, the middle column is of a cylindrical structure, and the positioning pin extends out of the middle column along the radial direction of the middle column.

In a possible design, the electrical property test refitting jig further comprises a translation device, the supporting seat is arranged on the workbench through the translation device, and the translation device is used for adjusting the relative positions of the pins and the conductive contacts below the insulating pressing block.

According to the modified jig for testing the electrical property of the air core coil inductor provided by the embodiment of the application, when in use, a tester first plugs an opening of a hook-shaped structure with an opening formed by the tested air-core coil inductor on a first side part of the insulation pressing block, so that the coil body is supported on the insulating compact and the two pins are located below the insulating compact (towards the conductive contacts of the table), after the air-core coil inductor is placed on the insulating pressing block, the relative positions of the two pins and the two conductive contacts which are positioned below the insulating pressing block are adjusted, so that the two pins can be correspondingly pressed and held on the two conductive contacts one by the insulating pressing block, after the pins are stably contacted with the conductive contacts, a tester can start to test and record electrical performance parameters such as inductance, quality factor, self-resonant frequency and the like of the air coil inductor. The air core coil inductor with unqualified indexes can be screened out through the tested electrical performance parameters, so that the reliability and the stability of the air core coil inductor leaving the factory are ensured.

The electrical property test repacking tool that this application embodiment provided, utilize and form the characteristics that have open-ended colluding the column structure between two pins and the coil body of the air core coil inductor shown in fig. 1, make insulating briquetting can separate the coil body and the pin of the air core coil inductor of structure shown in fig. 1, make the coil body be located insulating briquetting's top, and make the pin be located insulating briquetting's below (towards conductive contact), thereby make insulating briquetting do not press the coil body of air core coil inductor and just can press two pins one-to-one and keep on two conductive contact in the test procedure, make the tester carry out the electrical property test of air core coil inductor. The insulating briquetting can not press the coil body of air core coil inductor and only press two pins when testing, can make air core coil inductor non-deformable to can improve the accuracy of air core coil inductor electrical property test.

Drawings

Fig. 1 is a schematic diagram illustrating an overall structure of an air-core coil inductor according to an embodiment of the present application;

fig. 2 is a schematic overall structure diagram of an electrical performance testing retrofit fixture for an air-core coil inductor according to an embodiment of the present application;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

fig. 4 is a cross-sectional view of an electrical performance testing retrofit fixture provided in an embodiment of the present application;

fig. 5 is a top view of an electrical performance testing retrofit fixture provided in an embodiment of the present application;

fig. 6 is an exploded view of an electrical performance testing retrofit fixture according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a part of an electrical property testing modification fixture provided in an embodiment of the present application;

FIG. 8 is an enlarged view of a portion of FIG. 7 at B;

fig. 9 is a schematic diagram illustrating an overall structure of an electrical performance testing retrofit fixture mounted air core coil inductor according to an embodiment of the present application;

fig. 10 is a partially enlarged schematic view of fig. 9 at C.

Reference numerals: 10. a work table; 11. a conductive contact; 12. a groove; 13. positioning the convex column; 14. an insulating ring; 15. bolt holes; 20. insulating and pressing a block; 21. a U-shaped positioning groove; 22. a U-shaped notch; 30. an air-core coil inductor; 31. a pin; 32. a coil body; 40. a lifting device; 41. a supporting seat; 41a, a telescopic hole; 42. a middle column member; 43. a handle; 44. a U-shaped connecting plate; 45. a roller; 46. positioning pins; 47. a positioning column; 48. a spring; 49. a positioning ring sleeve; 50. an insulating plate; 51. a conductive via; 52. positioning holes; 60. a translation device; 61. a guide plate; 62. a slideway.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, when used in the orientation or positional relationship indicated in FIG. 1, are used solely for the purpose of facilitating a description of the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Fig. 1 is a schematic diagram of an overall structure of an air-core coil inductor according to an embodiment of the present application. As shown in fig. 1, the air-core coil inductor 30 includes a coil body 32 and two pins 31 connected to the coil body 32, the coil body 32 is in a hollow cylindrical shape, and the two pins 31 are connected to an edge of one side of the coil body 32 and bent from the edge toward a center direction to form a hook-shaped structure having an opening. Here, the two hook-shaped structures are arranged in parallel with each other, and the direction of the opening is the same. The electrical property testing and modifying jig provided by the embodiment of the application tests the electrical property of the air core coil inductor 30 structure shown in fig. 1 or the air core coil inductor 30 structure with an open hook-shaped structure formed between two similar pins 31 and a coil body 32.

Fig. 2 is a schematic structural diagram of an electrical performance testing modification fixture of an air-core coil inductor 30 according to an embodiment of the present application. Fig. 3 is a partially enlarged schematic view at a in fig. 2. As shown in fig. 2 to 3, the electrical property testing refitted fixture provided by the embodiment of the present application includes a workbench 10 and an insulating compact 20.

Two conductive contacts 11 are adjacently arranged on the workbench 10, and during testing, the workbench 10 is installed on a testing device (such as but not limited to a radio frequency impedance analyzer) as a supporting surface of an electrical property testing refitting jig, and the conductive contacts 11 on the workbench 10 are in contact with pins 31 of an air-core coil inductor 30 (shown in fig. 1) to be tested.

The insulating compact 20 is typically formed of an insulating material (e.g., plastic) or a surface treated non-conductive metal (e.g., aluminum with a passivation layer on the surface) to prevent shorting during testing of the retrofit fixture for electrical performance testing. The insulating compact 20 is configured to: the first side of the insulating compact 20 is used for being inserted into the opening of the hook-shaped structure, and the coil body 32 is supported on the insulating compact 20, and the insulating compact 20 is also used for keeping the two pins 31 located below the insulating compact 20 pressed on the two conductive contacts 11 in a one-to-one correspondence manner so as to perform an electrical performance test.

That is, when any one of the front, rear, left, and right sides (i.e., the first side portion) of the insulation block 20 in the horizontal plane is inserted into the two hook-shaped openings of the air coil inductor 30 as shown in fig. 1, the air coil inductor 30 may be divided into an upper portion and a lower portion, a portion of the coil body 32 is located above the insulation block 20 (on the side away from the conductive contacts 11) and is supported by the insulation block 20, and a portion of the two pins 31 is located below the insulation block 20 (on the side facing the conductive contacts 11), so that the insulation block 20 is configured to press only the pins 31 located below the insulation block 20 to be electrically connected to the conductive contacts 11 on the table 10, thereby testing the electrical performance of the air coil inductor 30.

According to the modified jig for testing the electrical property of the air coil inductor 30 provided by the embodiment of the application, in use, a tester firstly inserts the opening with the open hook-shaped structure formed by the tested air coil inductor 30 on the first side portion of the insulation pressing block 20, so that the coil body 32 is supported on the insulation pressing block 20 and the two pins 31 are located below the insulation pressing block 20 (towards the conductive contacts 11 of the worktable 10), after the air coil inductor 30 is placed on the insulation pressing block 20, the relative positions of the two pins 31 and the two conductive contacts 11 located below the insulation pressing block 20 are adjusted, so that the insulation pressing block 20 can press and hold the two pins 31 on the two conductive contacts 11 in a one-to-one correspondence manner, and after the pins 31 are stably contacted with the conductive contacts 11, the tester can start to test and record the inductance of the air coil inductor 30, Quality factor, and electrical performance parameters such as self-tuning frequency. The air core coil inductor 30 with unqualified indexes can be screened out through the tested electrical performance parameters, so that the reliability and stability of the air core coil inductor 30 leaving the factory are ensured.

The electrical property testing refitting jig provided by the embodiment of the application utilizes the characteristic that a hook-shaped structure with an opening is formed between two pins 31 and a coil body 32 of an air-core coil inductor 30 shown in fig. 1, so that an insulating pressing block 20 can separate the coil body 32 and the pins 31 of the air-core coil inductor 30 with the structure shown in fig. 1, the coil body 32 is positioned above the insulating pressing block 20, and the pins 31 are positioned below the insulating pressing block 20 (towards the conductive contacts 11), therefore, the insulating pressing block 20 can press and keep the two pins 31 on the two conductive contacts 11 in a one-to-one correspondence manner without pressing the coil body 32 of the air-core coil inductor 30 in the testing process, and a tester can test the electrical property of the air-core coil inductor 30. The insulating pressing block 20 does not press the coil body 32 of the air coil inductor 30 but only presses the two pins 31 during testing, so that the air coil inductor 30 is not easy to deform, and the accuracy of electrical performance testing of the air coil inductor 30 can be improved.

Further, as shown in fig. 2 to 3, in the embodiment of the present application, the upper surface of the insulation compact 20 is provided with a U-shaped positioning groove 21, an opening of the U-shaped positioning groove 21 penetrates through an edge of the first side portion, the U-shaped positioning groove 21 is used for accommodating the coil body 32 and positioning the coil body 32, and two pins 31 protrude from the opening of the U-shaped positioning groove 21 and extend to the lower side of the insulation compact 20. The position of the air-core coil inductor 30 on the insulation compact 20 can be positioned by the above arrangement.

The hollow coil inductor 30 is inserted and positioned on the U-shaped positioning groove 21, so that the situation that the position of the hollow coil inductor 30 on the insulating pressing block 20 changes in the test process to affect the stable contact between the pin 31 and the conductive contact 11 can be avoided, each hollow coil inductor 30 to be tested can be located at the same position, the consistency of the test result is guaranteed, and the accuracy of the electrical performance test result of the hollow coil inductor 30 is prevented from being affected.

Specifically, in this embodiment of the present application, the U-shaped positioning slot 21 is matched with the coil body 32 of the air coil inductor 30, that is, the coil body 32 can be just clamped in the U-shaped positioning slot 21, so that the position of the air coil inductor 30 can be more accurately positioned, and when the electrical performance of the same batch of air coil inductors 30 is tested, only the relative positions of the two pins 31 and the two conductive contacts 11 located below the insulating pressing block 20 need to be adjusted once, so that the two pins 31 and the two conductive contacts 11 located below the insulating pressing block 20 can be in one-to-one correspondence, thereby realizing rapid loading and improving the testing efficiency.

For example, when a tester measures the electrical performance of the air coil inductor 30 for the first time, after the air coil inductor 30 is inserted into the insulating press block 20, the tester needs to adjust the relative positions of the two pins 31 on the insulating press block 20 and the conductive contacts 11 (to ensure that the two pins 31 can be pressed on the two conductive contacts 11 in a one-to-one correspondence manner), and after the positions are adjusted, the tester can perform the electrical performance test. When the electrical performance of the air coil inductor 30 with the same structure is measured, the U-shaped positioning groove 21 is formed in the insulating pressing block 20, so that the position of the air coil inductor 30 which is released by a tester each time is the same, the time for adjusting the position of the pin 31 of the air coil inductor 30 on the insulating pressing block 20 is saved, the air coil inductor 30 can be aligned only by being placed into the U-shaped positioning groove 21, the rapid loading is realized, and the testing efficiency is improved.

Specifically, in the embodiment of the present application, the U-shaped notch 22 is disposed on the bottom wall of the U-shaped positioning slot 21, the U-shaped notch 22 penetrates through the edge of the first side portion, and the bottom walls of the two portions on the two sides of the U-shaped notch 22 press the two pins 31 in a one-to-one correspondence manner. Through the setting, only need set up the below in the diapire of two parts of U-shaped breach 22 both sides with two pin 31 one-to-ones when the test, just can fix a position two pin 31, but also can further alleviate insulating briquetting 20's weight, make things convenient for the tester to operate, improve efficiency of software testing.

Fig. 4 is a cross-sectional view of an electrical performance testing retrofit fixture according to an embodiment of the present application. Fig. 5 is a top view of an electrical performance testing retrofit fixture according to an embodiment of the present application. Fig. 6 is an exploded view of an electrical performance testing retrofit fixture according to an embodiment of the present disclosure. Fig. 7 is a schematic partial structural view of an electrical property testing modification fixture according to an embodiment of the present application. Fig. 8 is a partially enlarged schematic view of fig. 7 at B. Fig. 9 is a schematic diagram of an overall structure of an electrical performance testing retrofit fixture mounted air coil inductor 30 according to an embodiment of the present application. Fig. 10 is a partially enlarged schematic view of fig. 9 at C. The specific structure of the modified fixture for electrical property test provided by the present application is further described with reference to fig. 2-10.

As shown in fig. 6-8, in the embodiment of the present application, two conductive contacts 11 disposed on the worktable 10 are respectively of a circular ring structure and attached to the worktable 10, and are of a disc structure and located inside the circular ring structure, the circular ring structure and the disc structure are concentrically disposed, and an insulating ring 14 disposed between the two circular ring structures and the disc structure for electrical insulation is further disposed on the worktable 10.

Through setting conductive contact 11 to ring shape structure and disc structure, not only can make conductive contact 11 adapt to the structure of the pin 31 of the different air core coil inductor 30, increase the commonality of workstation 10, can also make the adjustment that the tester is convenient and fast more lie in two pin 31 of insulating briquetting 20 below and two conductive contact 11's relative position, when two pin 31 lie in the scope of ring shape structure conductive contact 11 and disc structure conductive contact 11 respectively promptly, just can make two pin 31 and two conductive contact 11 electricity be connected. In addition, by arranging the insulating ring 14, short circuit between the two conductive contacts 11 can be avoided, and normal test can be ensured.

As shown in fig. 2 to 6, in the embodiment of the present application, the work table 10 is provided with an insulating plate 50 covering the two conductive contacts 11, and the insulating plate 50 is provided with two conductive through holes 51 for the pins 31 to extend into and electrically connect with the conductive contacts 11. The insulating plate 50 is arranged on the workbench 10, so that the situation that short circuit is caused due to misoperation and the like in the test process and the normal operation of the test is influenced can be avoided. The conductive through holes 51 formed in the insulating plate 50 not only enable the pins 31 located below the insulating press block 20 to be electrically connected with the conductive contacts 11, but also enable a tester to more conveniently and quickly locate the positions of the conductive contacts 11.

Specifically, in the embodiment of the present application, the working platform 10 is provided with a groove 12, the insulating plate 50 covers the bottom wall of the groove 12, the conductive contact 11 having the circular ring structure is provided with a positioning convex pillar 13, and the positioning convex pillar 13 is inserted into a positioning hole 52 formed in the insulating plate 50. Through the mutual matching of the positioning holes 52 and the positioning convex columns 13, the situation that the relative position of the conductive through holes 51 on the conductive contacts 11 is changed due to the movement of the insulating plate 50, and the test result of the electrical property test is influenced can be avoided.

As shown in fig. 2 to 10, in the embodiment of the present application, the electrical property testing refitting jig further includes a lifting device 40, and the lifting device 40 is configured to drive the insulating pressing block 20 to lift. Can make things convenient for the efficient to operate insulation briquetting 20 more through setting up elevating gear 40, improve the change speed and the test speed of placing the air core coil inductor 30 on insulation briquetting 20, promote efficiency of software testing.

Specifically, in the present embodiment, the lifting device 40 includes a support base 41, a center pillar 42, and a handle 43. The supporting seat 41 is arranged on the workbench 10 and is provided with a telescopic hole 41a which is penetrated up and down, the central column 42 is arranged in the telescopic hole 41a in a lifting manner, the upper end of the central column 42 extends out of the supporting seat 41 and is connected with the handle 43, the lower end of the central column 42 extends out of the supporting seat 41 and is connected with the insulating pressing block 20, and the handle 43 drives the insulating pressing block 20 to lift through the central column 42.

During testing, a tester can lift the insulating press block 20 connected with the middle column 42 through the handle 43, insert the two pins 31 with the open hook-shaped structures of the air coil inductor 30 onto the first side part of the insulating press block 20, adjust the positions of the pins 31 and the conductive contacts 11 positioned below the insulating press block 20 after placing the air coil inductor 30 on the insulating press block 20, and then press the insulating press block 20 through the handle 43 to press and hold the two pins 31 positioned below the insulating press block 20 on the two conductive contacts 11 on the workbench 10 in a one-to-one correspondence manner, so as to perform electrical performance testing. That is, the lifting device 40 lifts and presses the insulating pressing block 20, so that the air-core coil inductor 30 can be conveniently and efficiently replaced, the insulating pressing block 20 can rapidly press the two pins 31 on the two conductive contacts 11 in a one-to-one correspondence manner, and the testing efficiency is improved.

Further, in the embodiment of the present application, the lifting device 40 further includes a U-shaped connecting plate 44, the upper end of the center pillar 42 is connected to the bottom surface of the U-shaped connecting plate 44, the middle portion of the handle 43 is hinged in the opening of the U-shaped connecting plate 44, one end of the handle 43 is a free end, and the other end of the handle 43 is in rolling contact with the upper surface of the supporting seat 41 through the roller 45. The middle part of the handle 43 is hinged on the U-shaped connecting plate 44, and one end of the handle 43 is in rolling contact with the upper surface of the supporting seat 41 through a roller 45 to enable the handle 43 to be contacted. Through the arrangement, the insulating pressing block 20 can be conveniently and efficiently operated to lift by the front and back rolling handle 43 of the tester.

The tester rolls before and after the upper surface of supporting seat 41 through driving handle 43, makes the contained angle of handle 43 and supporting seat 41 upper surface change, and the handle 43 length of connecting between U-shaped connecting plate 44 and supporting seat 41 upper surface is unchangeable, leads to the height between U-shaped connecting plate 44 and the supporting seat 41 upper surface to change like this to make the center pillar member 42 that is connected with U-shaped connecting plate 44 go up and down, just make the insulating briquetting 20 who links to each other with center pillar member 42 go up and down. Namely, the handle 43 is rolled on the upper surface of the support base 41, so that the included angle between the handle 43 and the upper surface of the support base 41 is changed, and the insulating pressing block 20 can be lifted.

Specifically, in the present embodiment, the lifting device 40 further includes a positioning pin 46, the positioning pin 46 is disposed on the upper end of the middle pillar 42 extending out of the supporting seat 41, the middle pillar 42 has a cylindrical structure, and the positioning pin 46 extends out of the middle pillar 42 along the radial direction of the middle pillar 42. The positioning pin 46 can limit the descending height of the middle column 42, and the phenomenon that the handle 43 drives the middle column 42 to drive the insulating pressing block 20 to excessively press down to influence the electrical performance testing accuracy of the air core coil inductor 30 is avoided.

In the embodiment of the present application, the lifting device 40 further includes a spring 48 and two positioning posts 47, the spring 48 is located in the telescopic hole 41a and sleeved outside the middle post 42, and when the handle 43 is in a free state, the spring 48 presses the pins 31 located below the insulating pressing block 20 onto the conductive contacts 11. Two positioning posts 47 are connected to the bottom surfaces of the side arms on both sides of the opening of the U-shaped connecting plate 44 and are telescopically inserted into the telescopic holes 41 a.

Through setting up spring 48, can be when handle 43 is in free state, make insulating briquetting 20 will be located the stable pressure of pin 31 of insulating briquetting 20 self below on two conductive contact 11, and make the tester need not to guarantee that two pins 31 and two conductive contact 11 are stable in the long-time application of force of test in-process to handle 43, the tester's hand can be followed handle 43 and removed when testing promptly, conveniently carries out follow-up operation.

By arranging the two positioning columns 47 which can be telescopically inserted into the telescopic holes 41a, the situation that when a tester moves the handle 43, the middle column 42 rotates while being lifted and affects the contact between the pin 31 positioned below the insulation pressing block 20 connected with the middle column 42 and the conductive contact 11 can be avoided.

Specifically, the lower end of the middle column 42 in the supporting seat 41 is fixedly provided with a positioning ring sleeve 49, when a tester grips the free end of the handle 43 and rolls the handle 43 to move the middle column 42 upwards to lift the insulation pressing block 20, the positioning ring sleeve 49 fixedly arranged on the middle column 42 moves upwards together with the middle column 42, at this time, the positioning ring sleeve 49 moves upwards to compress the spring 48 arranged on the middle column 42, so that the middle column is in a compressed state, and after the tester inserts the two pins 31 of the hollow coil inductor 30 which needs to be tested and is shown in fig. 1 on the insulation pressing block 20, the tester can release the handle 43, so that the handle 43 is in a free state. At this time, the spring 48 is reset under the action of the elastic force and gravity, and can drive the middle column 42 to move downwards, so that the two pins 31 positioned below the insulating pressing block 20 are stably contacted with the two conductive contacts 11 to realize the electrical connection.

Moreover, because the two positioning columns 47 are further arranged, the middle column piece 42 can be prevented from twisting in the descending process, so that the relative positions of the two pins 31 and the two conductive contacts 11 which are positioned below the insulating pressing block 20 are changed, and the electrical property test result is influenced.

As shown in fig. 2 to 10, in the embodiment of the present application, the electrical performance testing modification fixture further includes a translation device 60, the supporting base 41 is disposed on the working platform 10 through the translation device 60, and the translation device 60 is used for adjusting the relative positions of the two pins 31 and the conductive contacts 11 under the insulating press block 20 itself.

That is, in the embodiment of the present application, the tester adjusts the relative positions of the two pins 31 of the air-core coil inductor 30 plugged on the first side of the insulation pressing block 20 and the conductive contacts 11 on the worktable 10 by the translation device 60, so that the insulation pressing block 20 can press the two pins 31 located below the insulation pressing block 20 on the two conductive contacts 11 in a one-to-one correspondence.

Specifically, the translation device 60 includes a guide plate 61 and a bolt (not shown in the figure), a slide 62 which is through from top to bottom is provided on the guide plate 61, a bolt hole 15 is provided on the workbench 10, the bolt hole 15 is located in the slide 62, the relative position of the support base 41 and the workbench 10 is adjusted by moving the guide plate 61, so as to adjust the relative positions of the two pins 31 located below the insulating press block 20 itself and the two conductive contacts 11, so that the two pins 31 and the two conductive contacts 11 are arranged in a one-to-one correspondence, and after the adjustment is completed, the guide plate 61 is fixed on the workbench 10 by the mutual matching of the bolt and the bolt hole 15, so as to prevent the position of the insulating press block 20 from being changed in the test process to influence the electrical connection between the two pins 31 located below the insulating press block 20 itself and the conductive contacts 11.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides an air core coil inductor's electrical property test repacking tool, air core coil inductor (30) include coil body (32) and connect in two pins (31) on coil body (32), coil body (32) are hollow circular cylinder form, two pins (31) connect in the edge of one side of coil body (32) to from the edge to the crooked form that has the open-ended and collude the column structure, its characterized in that, electrical property test tool includes:

the device comprises a workbench (10), wherein two conductive contacts (11) are adjacently arranged on the workbench (10);

an insulating compact (20) configured to: the first side of the insulation pressing block (20) is used for being inserted into the opening of the hook-shaped structure, the coil body (32) is supported on the insulation pressing block (20), and the insulation pressing block (20) is further used for pressing and keeping the two pins (31) located below the insulation pressing block on the two conductive contacts (11) in a one-to-one correspondence mode so as to conduct electrical performance testing.

2. The electrical property test retrofit fixture of claim 1, wherein the insulating press block (20) is provided with a U-shaped positioning groove (21) on an upper surface thereof, an opening of the U-shaped positioning groove (21) penetrates through an edge of the first side portion, the U-shaped positioning groove (21) is used for accommodating the coil body (32) and positioning the coil body (32), and the two pins (31) protrude from the opening of the U-shaped positioning groove (21) and extend to a position below the insulating press block (20).

3. The electrical property testing refitted fixture of claim 2, wherein a U-shaped notch (22) is formed in a bottom wall of the U-shaped positioning groove (21), the U-shaped notch (22) penetrates through an edge of the first side portion, and bottom walls of two portions on two sides of the U-shaped notch (22) press the two pins (31) in a one-to-one correspondence manner.

4. The electrical property testing retrofit fixture of any one of claims 1-3, wherein one of said conductive contacts (11) is a circular ring-shaped structure and attached to said worktable (10), and the other of said conductive contacts (11) is a circular disk-shaped structure and located inside said circular ring-shaped structure, said circular ring-shaped structure is concentric with said circular disk-shaped structure, and said worktable (10) is further provided with an insulating ring (14) located between the two circular ring-shaped structures and the circular disk-shaped structure for electrical insulation.

5. The electrical property testing refitted fixture of any one of claims 1-3, wherein an insulating plate (50) covering the two conductive contacts (11) is provided on the work bench (10), and two conductive through holes (51) for the pins (31) to extend into and electrically connect with the conductive contacts (11) are provided on the insulating plate (50).

6. The electrical property testing refitting jig of claim 5, wherein a groove (12) is formed in the worktable (10), the insulating plate (50) covers the bottom wall of the groove (12), a positioning convex column (13) is formed on the bottom wall of the groove (12), and the positioning convex column (13) is inserted into a positioning hole (52) formed in the insulating plate (50).

7. The electrical performance testing retrofit fixture of any of claims 1-3, further comprising:

elevating gear (40), elevating gear (40) are including supporting seat (41), center pillar spare (42) and handle (43), supporting seat (41) are located telescopic hole (41a) that link up about having on workstation (10), locating of center pillar spare (42) liftable in telescopic hole (41a), the upper end of center pillar spare (42) is stretched out supporting seat (41) and with the handle links to each other, the lower extreme of center pillar spare (42) is stretched out supporting seat (41) and with insulating briquetting (20) link to each other, handle (43) are passed through center pillar spare (42) drive insulating briquetting (20) go up and down.

8. The electrical property test retrofit fixture of claim 7, wherein the lifting device (40) further comprises:

the upper end of the middle column piece (42) is connected with the bottom surface of the U-shaped connecting plate (44), the middle of the handle (43) is hinged in an opening of the U-shaped connecting plate (44), one end of the handle (43) is a free end, and the other end of the handle is in rolling contact with the upper surface of the supporting seat (41) through a roller (45).

9. The electrical property test retrofit fixture of claim 7, wherein the lifting device (40) further comprises:

the positioning pin (46) is arranged at the upper end of the middle column piece (42), the middle column piece (42) is of a cylindrical structure, and the positioning pin (46) extends out of the middle column piece (42) along the radial direction of the middle column piece (42).

10. The electrical property testing retrofit fixture of claim 8 or 9, further comprising:

the supporting seat (41) is arranged on the workbench (10) through the translation device (60), and the translation device (60) is used for adjusting the relative positions of the pins (31) and the conductive contacts (11) which are positioned below the insulating pressing block (20) per se.

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