CN219162347U

CN219162347U - Annular magnetic core inductance testing device

Info

Publication number: CN219162347U
Application number: CN202223014373.3U
Authority: CN
Inventors: 蒋涛; 陈小林; 赵光
Original assignee: Maanshan New Conda Magnetic Industrial Co ltd
Current assignee: Ma'anshan Xinkangda Magnetic Industry Co.,Ltd.
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-06-09
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses an annular magnetic core inductance testing device, which belongs to the technical field of soft magnetic ferrite and metal magnetic powder core production. The device comprises: the end cover is provided with a first mounting groove along the center of the end cover, and a first coil is arranged around the first mounting groove; the end part of the first coil is connected with a first matching piece; a first connecting lug is led out from any first coil and extends out of the end cover; a base, a second mounting groove corresponding to the first mounting groove is formed along the center of the base and used for accommodating the annular magnetic core, and a second coil is arranged around the second mounting groove; the end part of the second coil is connected with a second matching piece to be matched with the first matching piece; a second connecting lug is led out from any second coil and extends out of the base; and an inductance tester LCR connected with the first connecting lug and the second connecting lug through wires. The annular magnetic core inductance testing device solves the problem of testing consistency, can be used for multiple times through one-time investment of the manufacturing device, and reduces the testing cost.

Description

Annular magnetic core inductance testing device

Technical Field

The utility model belongs to the technical field of soft magnetic ferrite and metal magnetic powder core production, and particularly relates to an annular magnetic core inductance testing device.

Background

At present, the inductance test of the toroidal core of the soft magnetic series is carried out by manually and uniformly winding fixed turns on a tested magnetic ring by using an insulated enameled wire, so that the inductance with the fixed turns can be measured, and then the material magnetic conductivity parameter of the actual magnetic ring is verified by the measured inductance. Each magnetic ring to be tested must be wound manually, which is time-consuming and labor-consuming.

Because the test of each magnetic ring is manually wound, and the winding modes and the winding forces of different people are different, the consistency is not guaranteed, the test efficiency is very low, the time and the line are wasted, and the method is not suitable for batch test.

In order to solve the above-mentioned problems, for example, chinese patent application CN201310147688.1 discloses a small-inductance toroidal core inductance sorting device, which comprises a metal base, a toroidal core wound with a metal wire, an inductance tester, and a metal column, wherein the toroidal core is used as a magnetic field source, and the metal column, the metal cover, and the metal box are in contact to form a closed magnetic path together; the metal box without the cover is matched with the annular insulating cover, the metal cover is movably matched with the annular insulating cover, and the metal column sequentially passes through the metal cover, the annular insulating cover, the annular magnetic core and the metal box without the cover from top to bottom; the surface of the annular insulating cover is radially provided with symmetrical grooves and insulating convex columns, and the insulating convex columns can slide along the grooves; the edges of the grooves are provided with scales. Chinese patent application CN202210286071.7 discloses a soft magnetic ferrite core permeability testing device, which comprises a body, the bottom of the body is provided with a conveying turntable, the upper cover of the conveying turntable is provided with a shielding cover with two open ends, a placing box with an open top is slidably mounted on the conveying turntable, the placing box is limited and slid through a guide rail at the top of the conveying turntable, a rack ring is fixedly inlaid on the inner side wall of the placing box, the front end of the body is provided with a gear meshed with the rack ring, the top of the body is provided with a speed reducer and a stepping motor, the output end of the stepping motor is fixedly connected with the input end of the speed reducer, and the output end of the speed reducer is fixedly connected with the gear; the utility model discloses a magnetic conductivity testing device, which is characterized in that a plurality of circumferentially-arrayed partition plates are fixedly arranged on the bottom wall of a placing box, the two partition plates form a placing groove, a testing port is penetrated through the top of a shielding cover, a testing end electrically connected with a body is slidably arranged in the testing port, and the magnetic conductivity of a plurality of soft magnetic ferrites is automatically tested once through rotation of the placing box and lifting of the testing end.

The above-mentioned patent can improve the efficiency of magnetic core inductance test, but to annular type magnetic core inductance test, the above-mentioned patent can't carry out effective test, and use comparatively complicacy.

Disclosure of Invention

1. Problems to be solved

Aiming at the problem of low working efficiency of the conventional annular magnetic core inductance test, the utility model provides the annular magnetic core inductance test device which is used for rapidly and accurately testing and improving the test efficiency.

2. Technical proposal

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model relates to a ring-shaped magnetic core inductance testing device, which comprises:

the end cover is provided with a first mounting groove along the center of the end cover, and a first coil is arranged around the first mounting groove; the end part of the first coil is connected with a first matching piece; a first connecting lug is led out from any first coil and extends out of the end cover;

a base, a second mounting groove corresponding to the first mounting groove is formed along the center of the base and used for accommodating the annular magnetic core, and a second coil is arranged around the second mounting groove; the end part of the second coil is connected with a second matching piece to be matched with the first matching piece; a second connecting lug is led out from any second coil and extends out of the base;

and an inductance tester LCR connected with the first connecting lug and the second connecting lug through wires.

In one possible embodiment of the present utility model, the first mating member is a linear conductive sheet, and the second mating member is a Y-shaped conductive sheet.

In one possible embodiment of the present utility model, the Y-shaped conductive sheet includes two copper sheets, and opposite protrusions are formed on one side of the copper sheets.

In one possible embodiment of the present utility model, a positioning structure is disposed between the end cover and the base.

In one possible embodiment of the present utility model, the positioning structure includes a positioning groove and a positioning prism, wherein the positioning groove is disposed on the end cover or the base, and the corresponding positioning prism is disposed on the base or the end cover.

In one possible embodiment of the present utility model, the first coil and the second coil are both copper wires.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

the annular magnetic core inductance testing device solves the problem of testing consistency, improves the testing efficiency, saves testing wires, can be used for multiple times through one-time investment of the manufacturing device, and reduces the testing cost.

Drawings

FIG. 1 is a schematic diagram of a toroidal core inductance test device according to the present utility model;

FIG. 2 is a schematic diagram of an end cap of example 1 of a toroidal core-like inductance testing device according to the present utility model;

FIG. 3 is a schematic view of the base of example 1 of the toroidal core inductance test device of the present utility model;

FIG. 4 is a schematic diagram of an end cap of example 2 of the toroidal core inductance test device of the present utility model;

FIG. 5 is a schematic view of the base of example 2 of the toroidal core inductance test device of the present utility model;

FIG. 6 is a diagram showing the use of the toroidal core inductance test device according to the present utility model;

fig. 7 is an enlarged view of a portion a of fig. 6.

Reference numerals illustrate:

10. an end cap; 11. a first mounting groove; 12. a first coil; 13. a first mating member; 14. a first connection lug; 15. a positioning groove;

20. a base; 21. a second mounting groove; 22. a second coil; 23. a second mating member; 231. a protrusion; 24. a second connecting ear; 25. positioning prisms;

30. inductance tester LCR; 31. a wire;

40. a toroidal-type core.

Detailed Description

Exemplary embodiments of the present utility model are described in detail below. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the utility model, it is to be understood that other embodiments may be realized and that various changes to the utility model may be made without departing from the spirit and scope of the utility model. The following more detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely illustrative and not limiting of the utility model's features and characteristics in order to set forth the best mode of carrying out the utility model and to sufficiently enable those skilled in the art to practice the utility model. Accordingly, the scope of the utility model is limited only by the attached claims.

The following detailed description and example embodiments of the utility model are described.

Example 1

As shown in fig. 1 and 6, the toroidal core-like inductance test device of the present embodiment includes: the end cap 10, the base 20 and the inductance tester LCR30, wherein the inductance tester LCR30 is a model 130L-C tester manufactured by Talck, america.

Wherein, the end cover 10 is provided with a first mounting groove 11 along the center thereof, and a first coil 12 is arranged around the first mounting groove 11; the end of the first coil 12 is connected with a first matching piece 13; the first connection lugs 14 extend from any of the first coils 12 out of the end cap 10.

A base 20 having a second mounting groove 21 formed along the center thereof in correspondence with the first mounting groove 11 for accommodating the toroidal core 40, and a second coil 22 provided around the second mounting groove 21; the end part of the second coil 22 is connected with a second matching piece 23 to be matched with the first matching piece 13; a second connector lug 24 extends from any second coil 22 extending from the base 20.

And an inductance tester LCR30 that connects the first connection lug 14 and the second connection lug 24 by a wire 31.

As shown in fig. 7, the first matching member 13 is a linear conductive sheet, the second matching member 23 is a Y-shaped conductive sheet, and the linear conductive sheet and the Y-shaped conductive sheet form a socket-like structure, so as to realize connection and communication (conductive loop) between the end cover 10 and the base 20, and form a magnetic transducer, and further obtain corresponding data by the inductance tester LCR 30.

The first coil 12 and the second coil 22 of the toroidal core inductance testing device of this embodiment are all distributed, as shown in fig. 2 and 3. The end cover 10 and the base 20 are formed by one step of hard plastic, the first coil 12 and the second coil 22 are pre-buried in the end cover 10 through glue, then are filled with foam, the end cover 10 is provided with an upper half coil, the base 20 is provided with a lower half coil, and the two coils are combined through the first matching piece 13 and the second matching piece 23, so that a conductive path can be formed.

Further, the Y-shaped conductive sheet comprises two copper sheets, and opposite protrusions 231 are formed on one side of each copper sheet, so that the Y-shaped conductive sheet can be clamped tightly, and the influence caused by vibration in the using process is avoided.

In order to improve the positioning of the end cap 10 and the base 20, a positioning structure is arranged between the end cap 10 and the base 20, and the positioning structure comprises a positioning groove 15 and a positioning prism 25, wherein the positioning groove 15 is arranged on the end cap 10 or the base 20.

The whole measuring range is 0-300 MH, including various ring-shaped magnetic cores 40 with the outer diameter of 7.62-26.92 mm and the inner diameter of less than 1.27 mm. When the detected annular magnetic core is put into the annular magnetic core inductance testing device of the embodiment, the inductance is reflected in the primary winding through the transformer, so that the inductance of the annular magnetic core 40 is measured, the measuring precision error is +/-2%, and the detection use requirement is met.

Example 2

The first coil 12 and the second coil 22 of the toroidal core inductance testing device of this embodiment may be partially distributed as shown in fig. 4 and 5. The end cover 10 and the base 20 are formed by one step of hard plastic, the first coil 12 and the second coil 22 are pre-buried in the end cover 10 through glue, then are filled with foam, the end cover 10 is provided with an upper half coil, the base 20 is provided with a lower half coil, and the two coils are combined through the first matching piece 13 and the second matching piece 23, so that a conductive path can be formed.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it is possible for a person skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be considered as the protection scope of the present utility model.

Claims

1. A toroidal core-like inductance testing device, comprising:

an end cover (10) provided with a first mounting groove (11) along the center thereof, and a first coil (12) surrounding the first mounting groove (11); the end part of the first coil (12) is connected with a first matching piece (13); a first connecting lug (14) is led out from any first coil (12) and extends out of the end cover (10);

a base (20) provided with a second installation groove (21) along the center thereof corresponding to the first installation groove (11) for accommodating a ring-shaped magnetic core (40), and a second coil (22) surrounding the second installation groove (21); the end part of the second coil (22) is connected with a second matching piece (23) to be matched with the first matching piece (13); a second connecting lug (24) is led out from any second coil (22) and extends out of the base (20);

and an inductance tester LCR (30) which is connected to the first connection lug (14) and the second connection lug (24) by a wire (31).

2. The toroidal core inductance testing device according to claim 1, wherein the first mating member (13) is a straight conductive sheet and the second mating member (23) is a Y-shaped conductive sheet.

3. The toroidal core inductance testing device of claim 2, wherein the Y-shaped conductive sheet comprises two copper sheets with opposing protrusions (231) formed on one side of the copper sheets.

4. A toroidal core inductance testing device according to any of claims 1-3, wherein a positioning structure is provided between the end cap (10) and the base (20).

5. Toroidal core-like inductance testing device according to claim 4, characterized in that the positioning structure comprises positioning grooves (15) and positioning prisms (25), wherein the positioning grooves (15) are provided on the end cap (10) or on the base (20).

6. The toroidal core-like inductance testing device according to claim 5, wherein said first coil (12) and second coil (22) are both copper wires.