CN208334428U - A kind of toroidal core multi-turn inductance test fixture - Google Patents

Abstract

The utility model relates to inductance measurement technical fields, specifically, being related to a kind of toroidal core multi-turn inductance test fixture.Including the upper clamp and lower clamp fastened up and down, the upper clamp and lower clamp are in annulus shape；It is all provided in upper clamp and lower clamp fluted, after upper clamp and lower clamp fasten, upper folder groove and lower folder groove constitute one for placing the annular housing of Multiple Type toroidal core, not only can effectively prevent magnetic core and have fallen off, but also can guarantee compactness when upper and lower fixture fastens；In addition, upper contact is to insert column structure, the lower contact is groove type structure, and grafting fastens between upper contact and corresponding lower contact, is conducive to effective contact between upper and lower contact, conductive effect is good, to can guarantee the accuracy of test result；Upper clamp coiling, lower clamp coiling are inlayed respectively to be fixed on the shell of folder groove, lower folder groove, will not be worn, to can be reduced the dosage of test insulated copper wire, be reduced manufacturing cost.

Description

A kind of toroidal core multi-turn inductance test fixture

Technical field

The utility model relates to inductance measurement technical fields, specifically, being related to a kind of toroidal core multi-turn electrical sensing Try fixture.

Background technique

In the design of electronic product, various coil inductors can be usually used, there are many core shapes in inductor, Wherein, toroidal core is complete closed magnetic circuit magnetic core, is mainly used for inhibiting the differential mode inductors and common mode inductance of EMI electromagnetic interference In device, both inductors are required to coiling multi-turn conducting wire to reach correspondingly inductance and resistance requirements.Magnetic core manufacturer is often Need to inspect by random samples a large amount of toroidal core, need to test the inductance under coiling multi-turn in sampling observation, toroidal inductor conducting wire around System needs circle of hand wound 10 or more on magnetic core surface, winding process and need carefully to verify after the completion circle number whether mostly around Or it is few around then with LCR table test respective performances, testing also needs to remove conducting wire after inductance.The magnetic core of each sampling observation It needs to repeat coiling, process of taking out stitches, not only considerably increases the sampling observation time, reduce sampling observation efficiency, increase cost of labor, and And test copper conductor is discarded because bending the excessive copper wire insulating surface damage fracture due to of number after using for several times, causes copper wire Waste, increase manufacturing cost.

Utility model content

It is above-mentioned to solve the purpose of the utility model is to provide a kind of toroidal core multi-turn inductance test fixture Technical problem.

To solve the above problems, the technical scheme adopted by the utility model is

A kind of toroidal core multi-turn inductance test fixture, it is characterised in that: including the upper clamp and lower folder fastened up and down Body, the upper clamp and lower clamp are in annulus shape, and the upper folder groove of annular is equipped on upper clamp, are set on lower clamp After having the lower folder groove of annular, the upper clamp and lower clamp to fasten, upper folder groove and lower folder groove constitute an annular housing； Several upper clamp coilings are uniformly fixed on the outer wall of the upper folder groove, are respectively equipped on the both ends of each upper clamp coiling Upper contact；Several lower clamp coilings are uniformly fixed on the outer wall of the lower folder groove, on the both ends of each lower clamp coiling It is respectively equipped with and the one-to-one lower contact of upper contact；After the upper clamp and lower clamp fasten, each upper clamp coiling and it is each under Clamp coiling is connected by upper contact with the one-to-one correspondence of lower contact, and a test lead is constituted.

Preferred: the upper contact is to insert column structure, and the lower contact is groove type structure；Each upper contact with it is corresponding Lower contact between grafting fasten.

Preferred: the shell for being fixed on folder groove, lower folder groove is inlayed in the upper clamp coiling, lower clamp coiling respectively On.

The utility model has the advantages that compared with prior art, being all provided with fluted, upper clamp in the upper clamp and lower clamp of the utility model After lower clamp fastening, upper folder groove and lower folder groove constitute the annular housing for being used to place Multiple Type toroidal core, Not only it can effectively prevent magnetic core to fall off, but also can guarantee compactness when upper and lower fixture fastens；In addition, upper contact is to insert column structure, The lower contact is groove type structure, and grafting fastens between upper contact and corresponding lower contact, is conducive between upper and lower contact Effective contact, conductive effect is good, to can guarantee the accuracy of test result；Upper clamp coiling, lower clamp coiling are inlayed respectively Build-in is scheduled on the shell of folder groove, lower folder groove, will not be worn, thus can be reduced the dosage of test insulated copper wire, Reduce manufacturing cost.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model；

Fig. 2 is the structural schematic diagram of upper clamp described in the utility model；

Fig. 3 is the structural schematic diagram of lower clamp described in the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Embodiment:

- Fig. 3 referring to Fig.1, toroidal core multi-turn inductance test fixture described in the present embodiment are upper including what is fastened up and down Clamp 1 and lower clamp 2, the upper clamp 1 and lower clamp 2 are in annulus shape, are made of ABS engineering plastics.In upper clamp 1 It is equipped with the upper folder groove 11 of annular, the lower folder groove 21 of annular is equipped on lower clamp 2, the upper clamp 1 is detained with lower clamp 2 After conjunction, upper folder groove 11 constitutes an annular housing with lower folder groove 21；It is uniformly fixed on the outer wall of the upper folder groove 11 Several upper clamp coilings 31 are respectively equipped with upper contact 12 on the both ends of each upper clamp coiling 31；The lower folder groove 21 It is uniformly fixed with several lower clamp coilings 32 on outer wall, is respectively equipped on the both ends of each lower clamp coiling 32 and upper contact 12 One-to-one lower contact 22；After the upper clamp 1 is fastened with lower clamp 2, each upper clamp coiling 31 and each lower clamp coiling 32 Connected by upper contact 12 with the one-to-one correspondence of lower contact 22, constitutes a test lead 3.

The upper contact 12 is to insert column structure, and the lower contact 22 is groove type structure；Each upper contact 12 with it is corresponding Lower contact 22 between grafting fasten.

The upper clamp coiling 31, lower clamp coiling 32 inlay respectively be fixed on folder groove 11, lower folder groove 21 it is outer On shell.

The working principle of the utility model is summarized as follows:

Toroidal core to be tested is put into upper folder groove 11 to constitute in an annular housing with lower folder groove 21；On fastening Clamp 1 and lower clamp 2, upper contact 11 and lower contact 21 correspond grafting and fasten, each upper clamp coiling 31 and each lower clamp around Line 32 constitutes a test lead 3；After the completion of combination, the positive and negative test pencil of LCR table is connected with the both ends of the test lead 3 of extraction It connects, tests out the inductance value and impedance value of needs.

The above is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all benefits The equivalent structure made by the utility model specification and accompanying drawing content is directly or indirectly used in other relevant technology necks Domain, similarly within the scope of patent protection of the utility model.

Claims (3)

1. a kind of toroidal core multi-turn inductance test fixture, it is characterised in that: including the upper clamp (1) and lower folder fastened up and down Body (2), the upper clamp (1) and lower clamp (2) are in annulus shape, and the upper folder groove of annular is equipped on upper clamp (1) (11), the lower folder groove (21) of annular is equipped on lower clamp (2), after the upper clamp (1) and lower clamp (2) fasten, upper folder Groove (11) and lower folder groove (21) constitute an annular housing；It is uniformly fixed on the outer wall of upper folder groove (11) several A upper clamp coiling (31) is respectively equipped with upper contact (12) on the both ends of each upper clamp coiling (31)；The lower folder groove (21) it is uniformly fixed with several lower clamp coilings (32) on outer wall, is respectively equipped on the both ends of each lower clamp coiling (32) With the one-to-one lower contact (22) of upper contact (12)；After the upper clamp (1) and lower clamp (2) fasten, each upper clamp coiling (31) connected by upper contact (12) with the one-to-one correspondence of lower contact (22) with each lower clamp coiling (32), constitute a test and lead Line (3).

2. toroidal core according to claim 1 multi-turn inductance test fixture, it is characterised in that: the upper contact (12) To insert column structure, the lower contact (22) is groove type structure；Between each upper contact (12) and corresponding lower contact (22) Grafting fastens.

3. toroidal core according to claim 1 or 2 multi-turn inductance test fixture, it is characterised in that: the upper clamp Coiling (31), lower clamp coiling (32) inlay respectively be fixed on folder groove (11), it is lower folder groove (21) shell on.