Withstand voltage test fixture for annular inductor

Abstract

The utility model discloses an annular inductor withstand voltage test fixture, which comprises a protection box and a workbench, the top of the protection box is not covered, the outer edge of the workbench is provided with an eave edge, the eave edge is arranged on the protection box, the workbench is suspended in the middle upper part of the inner cavity of the protection box, and the workbench is provided with a strip-shaped left plugging area and a strip-shaped right plugging area. The left plugging area is parallel to the right plugging area, a plurality of metal clamping pieces are horizontally and longitudinally distributed on the left plugging area and the right plugging area at intervals, the metal clamping pieces are vertically embedded into the workbench, a left outgoing line and a right outgoing line are arranged at the bottom of the workbench, the left outgoing line is connected with the metal clamping pieces of the left plugging area in series, and the right outgoing line is connected with the metal clamping pieces of the right plugging area in series. The left leading-out wire and the right leading-out wire extend out through leading-out holes in the protection box. Compared with the prior art, the device can effectively improve the withstand voltage test efficiency and test accuracy of the annular inductor.

Description

Technical Field

[0001] The utility model belongs to inductor testing equipment, in particular to a ring inductor withstand voltage testing fixture. Background Art

[0002] A toroidal inductor is an electronic component, also known as a toroidal coil inductor or toroidal transformer. It is mainly composed of a toroidal magnetic core and a wire, which is wound around the magnetic core to form a coil. Toroidal inductors have the characteristics of high inductance, low DC resistance, low magnetic flux leakage and high quality factor, so they are widely used in circuits for filtering, oscillation, coupling and isolation. For inductor manufacturers, the toroidal inductors they produce need to undergo a withstand voltage test to ensure that they can safely withstand the voltage level required in the circuit during operation, to prevent equipment failure, malfunction, or even fire due to insufficient withstand voltage.

[0003] At present, the instrument used for the withstand voltage test of the toroidal inductor is a withstand voltage tester, which uses the clip of the withstand voltage tester to contact the pins of the toroidal inductor to perform the withstand voltage test on the toroidal inductor. The operation of contacting the pins of the toroidal inductor with the clip is cumbersome and the test efficiency is low; in addition, the connection between the clip and the pin is prone to incorrect or unstable conditions, resulting in inaccurate test results or test failure. Utility Model Content

[0004] The utility model aims to overcome the connection problem between the existing withstand voltage tester clip and the toroidal inductor pin, and to provide a toroidal inductor withstand voltage test fixture that can replace the withstand voltage tester clip and effectively improve the test efficiency and test accuracy.

[0005] The utility model solves the technical problem by adopting a technical solution: a toroidal inductor withstand voltage test fixture, comprising a protection box and a workbench, wherein the top of the protection box is uncovered, an eave is arranged on the outer edge of the workbench, the eave is placed on the protection box, the workbench is suspended in the middle and upper part of the inner cavity of the protection box, a long strip-shaped left plug-in area and a right plug-in area are arranged on the workbench, the left plug-in area and the right plug-in area are parallel to each other, a plurality of metal clips are horizontally and longitudinally distributed on the left plug-in area and the right plug-in area, the metal clips are vertically embedded in the workbench, a left lead-out line and a right lead-out line are arranged at the bottom of the workbench, the left lead-out line is connected in series with the metal clip of the left plug-in area, the right lead-out line is connected in series with the metal clip of the right plug-in area, and the left lead-out line and the right lead-out line extend out through the lead-out holes on the protection box.

[0006] Optionally, the eaves are detachably fixedly connected to the protective box.

[0007] Optionally, a platform is provided on the inner wall of the protection box, and the workbench is placed on the platform.

[0008] Optionally, a thickened insulation layer is provided on the wire bodies of the left lead wire and the right lead wire extending out of the protective box.

[0009] Optionally, a limiting boss is provided between the left plug-in area and the right plug-in area. The limiting boss is a rectangular parallelepiped. The limiting boss is parallel to the left plug-in area and the right plug-in area. The length of the limiting boss is not less than the length of the left plug-in area and the right plug-in area.

[0010] The use and principle of the utility model are as follows: connect the left lead and the right lead with the test line of the withstand voltage tester, insert the pin of the toroidal inductor into the metal clip, start the withstand voltage tester, perform a withstand voltage test on the toroidal inductor, and after the test is completed, unplug the toroidal inductor and perform a withstand voltage test on the next toroidal inductor. By replacing the original clip of the withstand voltage tester with a jig, the pin of the toroidal inductor can be quickly connected with the withstand voltage tester, thereby performing a fast and accurate test.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model can effectively improve the efficiency and accuracy of the withstand voltage test of the toroidal inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0014] The components described in the accompanying drawings are marked as follows: protective box 1, workbench 2, eaves 3, left plug-in area 4, right plug-in area 5, metal clip 6, left lead wire 7, right lead wire 8, lead hole 9, eaves 10, and limiting boss 11. DETAILED DESCRIPTION

[0015] Embodiment 1, below combines Figure 1 and Figure 2The utility model is further described. A toroidal inductor withstand voltage test fixture comprises a protective box 1 and a workbench 2. The top of the protective box is uncovered. An eave 3 is provided on the outer edge of the workbench. The eave is placed on the protective box. The eave of the workbench is fixedly connected to the protective box by screws. The workbench is suspended in the middle and upper part of the inner cavity of the protective box. A long strip-shaped left plug-in area 4 and a right plug-in area 5 are provided in the middle of the top surface of the workbench. The left plug-in area and the right plug-in area are parallel to each other. The spacing between the left plug-in area and the right plug-in area is the pin spacing of the toroidal inductor. A plurality of metal clips 6 are horizontally and longitudinally spaced apart on the left plug-in area and the right plug-in area. The metal clips are composed of two parallel elastic metal sheets. A part of the upper section of the elastic metal sheet is arranged in an arc shape. The arc-shaped parts of the two elastic metal sheet groups are in contact, and the lower sections of the two elastic metal sheets are connected. The spacing between the single-row metal clips is the pin pitch of the toroidal inductor. The metal clips are vertically embedded in the workbench, and the openings of the metal clips are exposed on the upper surface of the workbench. A left lead 7 and a right lead 8 are provided at the bottom of the workbench. The left lead is connected in series with the metal clip in the left plug-in area, and the right lead is connected in series with the metal clip in the right plug-in area. The left lead and the right lead are connected in series with the metal clips through a metal connecting piece, and the metal connecting piece is fixed to the bottom of the workbench. The bottom of the metal clip is vertically fixed on the metal connecting piece. The left lead and the right lead are connected to the metal connecting piece, and the left lead and the right lead extend through the lead-out hole 9 on the protective box.

[0016] Optionally, in order to improve the stability of the workbench, a platform 10 is provided on the inner wall of the protection box, and the workbench is placed on the platform.

[0017] Optionally, in order to effectively protect the portion of the left lead wire and the right lead wire protruding from the protection box, a thickened insulation layer is provided on the protruding portion of the left lead wire and the right lead wire.

[0018] Optionally, in order to ensure smooth insertion of the toroidal inductor pins and prevent the toroidal inductor from affecting the metal pins, a limiting boss 11 is provided between the left insertion area and the right insertion area. The limiting boss is a rectangular parallelepiped and is parallel to the left insertion area and the right insertion area. The length of the limiting boss is not less than the length of the left insertion area and the right insertion area.

[0019] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A toroidal inductor withstand voltage test fixture, comprising a protective box (1) and a workbench (2), wherein the top of the protective box has no cover, and is characterized in that: The outer edge of the workbench is provided with an eave (3), the eave is placed on the protection box, and the workbench is suspended in the middle and upper part of the inner cavity of the protection box. The workbench is provided with a long strip of left plug-in area (4) and right plug-in area (5), the left plug-in area and the right plug-in area are parallel to each other, and a plurality of metal clips (6) are horizontally and longitudinally distributed on the left plug-in area and the right plug-in area, and the metal clips are vertically embedded in the workbench. The bottom of the workbench is provided with a left lead wire (7) and a right lead wire (8), the left lead wire is connected in series with the metal clip of the left plug-in area, and the right lead wire is connected in series with the metal clip of the right plug-in area, and the left lead wire and the right lead wire extend through the lead-out hole (9) on the protection box.

2. The toroidal inductor withstand voltage test fixture according to claim 1, characterized in that: The eave edge and the protection box are detachably fixedly connected.

3. The toroidal inductor withstand voltage test fixture according to claim 1, characterized in that: An eaves platform (10) is provided on the inner wall of the protection box, and a workbench is placed on the eaves platform.

4. The toroidal inductor withstand voltage test fixture according to claim 1, characterized in that: A thickened insulation layer is provided on the wire bodies of the left lead wire and the right lead wire extending out of the protection box.

5. The toroidal inductor withstand voltage test fixture according to claim 1, characterized in that: A limiting boss (11) is provided between the left plugging area and the right plugging area. The limiting boss is a rectangular parallelepiped. The limiting boss is parallel to the left plugging area and the right plugging area. The length of the limiting boss is not less than the length of the left plugging area and the right plugging area.

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