Row pitch adjustable jig for withstand voltage test of annular inductor

Abstract

The utility model discloses an annular inductor voltage withstanding test row pitch adjustable jig which comprises a protection box, a supporting plate is fixed to the upper middle portion of an inner cavity of the protection box, a workbench I and a workbench II are arranged on the supporting plate, and a long-strip-shaped inserting area I and a long-strip-shaped inserting area II are arranged on the workbench I and the workbench II respectively. A plurality of metal clamping pieces are distributed on the plugging area I and the plugging area II, the bottom of the workbench I and the bottom of the workbench II are provided with a leading-out wire I and a leading-out wire II respectively, the leading-out wire I is connected with the metal clamping pieces of the plugging area I in series, the leading-out wire II is connected with the metal clamping pieces of the plugging area II in series, a sliding hole is formed in the workbench II, and a positioning bolt is arranged on the sliding hole. The workbench II is fixedly connected with the supporting plate through positioning bolts, a pull rod is arranged on one side of the workbench II and is perpendicular to the insertion connection area II, and one end of the pull rod penetrates out of the protection box. Compared with the prior art, the device can effectively improve the test efficiency and the test accuracy of the withstand voltage test of the annular inductor, and has higher compatibility.

Description

Technical Field

[0001] The utility model belongs to inductor testing equipment, in particular to a jig with adjustable row spacing for a ring-shaped inductor withstand voltage test. 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 purpose of the utility model is 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 with adjustable row spacing, which can replace the withstand voltage tester clip and effectively improve the test efficiency and test accuracy, and has high compatibility.

[0005] The utility model solves the technical problem by adopting a technical solution: a toroidal inductor withstand voltage test jig with adjustable row spacing, comprising a protective box, the top of the protective box has no cover, a support plate is fixed to the middle and upper part of the inner cavity of the protective box, a workbench I and a workbench II are arranged on the support plate, the workbench I is fixedly connected to the support plate, the workbench II is placed on the support plate, a long strip plug-in area I and a plug-in area II are respectively arranged on the workbench I and the workbench II, the plug-in area I and the plug-in area II are parallel, a plurality of metal clips are horizontally and longitudinally spaced on the plug-in area I and the plug-in area II, and the metal clips are vertically embedded Workbench Ⅰ and workbench Ⅱ, lead wire Ⅰ and lead wire Ⅱ are respectively arranged at the bottom of workbench Ⅰ and workbench Ⅱ, lead wire Ⅰ is connected in series with the metal clip of plug-in area Ⅰ, lead wire Ⅱ is connected in series with the metal clip of plug-in area Ⅱ, lead wire Ⅰ and lead wire Ⅱ extend out through the lead-out holes on the protection box, long sliding holes are arranged on both ends of plug-in area Ⅱ on workbench Ⅱ, the sliding holes are perpendicular to plug-in area Ⅱ, positioning bolts are arranged on the sliding holes, workbench Ⅱ is fixedly connected to the support plate by the positioning bolts, a pull rod is arranged on one side of workbench Ⅱ, the pull rod is perpendicular to plug-in area Ⅱ, and one end of the pull rod passes through the protection box.

[0006] Optionally, a protective plate is provided above the workbench I and the workbench II, the protective plate is fixedly connected to the protective box, the workbench II is fixedly connected to the support plate and the protective plate by positioning bolts, and an insertion port is provided on the protective plate, and the insertion port is located above the metal clip.

[0007] Optionally, a movable opening is provided in the middle of the support plate, and the lead wires I and II pass through the movable opening and extend out through the lead-out holes on the protective box.

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

[0009] The usage and principle of the utility model are as follows: connect the lead wires I and II to the test wires of the withstand voltage tester; according to the row spacing of the pins of the toroidal inductor to be tested, loosen the positioning bolts, pull the pull rod, and the workbench II slides on the support plate along the movable hole, and the spacing between the workbench II and the workbench I changes. The row spacing is determined by adjusting the spacing between the workbench II and the workbench I. After the row spacing is determined, tighten the positioning bolts to fix the position of the workbench II; then, insert the pins of the toroidal inductor into the metal clip, start the withstand voltage tester, and perform a withstand voltage test on the toroidal inductor. After the test is completed, unplug the toroidal inductor and perform a withstand voltage test on the next toroidal inductor. By replacing the original clips of the withstand voltage tester with a jig, the pins of the toroidal inductor can be quickly connected to the withstand voltage tester, so as to perform a quick and accurate test. Since the row spacing of the jig is adjustable, it can be compatible with more types of toroidal inductors and has high compatibility.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can effectively improve the test efficiency and test accuracy of the withstand voltage test of the toroidal inductor, and has higher compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the top view of the support plate of the utility model;

[0014] Figure 4 This is a schematic diagram of the top view of the structure of the workbench II of the utility model;

[0015] The components described in the accompanying drawings are marked as follows: protective box 1, support plate 2, workbench Ⅰ3, workbench Ⅱ4, plug-in area Ⅰ5, plug-in area Ⅱ6, metal clip 7, lead wire Ⅰ8, lead wire Ⅱ9, sliding hole 10, positioning bolt 11, pull rod 12, protective plate 13, insertion port 14, movable opening 15. DETAILED DESCRIPTION

[0016] Embodiment 1, below combines Figure 1-4 The utility model is further described. A jig with adjustable row spacing for a withstand voltage test of a toroidal inductor comprises a protective box 1. The top of the protective box has no cover. A support plate 2 is fixed to the middle and upper part of the inner cavity of the protective box. A workbench Ⅰ3 and a workbench Ⅱ4 are arranged on the support plate. The workbench Ⅰ and the workbench Ⅱ are rectangular parallelepipeds with the same length and height. The workbench Ⅰ is fixedly connected to the support plate. The workbench Ⅱ is placed on the support plate. Long strip-shaped plug-in areas Ⅰ5 and Ⅱ6 are respectively arranged on the workbench Ⅰ and the workbench Ⅱ. The plug-in areas Ⅰ and Ⅱ are parallel to each other. A plurality of metal clips 7 are horizontally and longitudinally spaced apart on the plug-in areas Ⅰ and Ⅱ. 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. 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 Ⅰ and the workbench Ⅱ. The opening of the metal clip is exposed on the upper surface of the workbench I and the workbench II. The bottom of the workbench I and the workbench II are respectively provided with lead wire I 8 and lead wire II 9. Lead wire I is connected in series with the metal clip of the plug-in area I, and lead wire II is connected in series with the metal clip of the plug-in area II. Lead wire I and lead wire II are connected in series with the metal clips through a metal connecting piece. The metal connecting piece is fixed on the bottom of the workbench I and the workbench II. The bottom of the metal clip is vertically fixed on the metal connecting piece. Lead wire I and lead wire II are connected with the metal connecting piece. Lead wire I and lead wire II extend out through the lead-out hole on the protective box. Long strip sliding holes 10 are provided on both ends of the plug-in area II on the workbench II. The sliding holes are perpendicular to the plug-in area II. Positioning bolts 11 are provided on the sliding holes. The workbench II is fixedly connected to the support plate through the positioning bolts. The positioning bolts are threadedly connected to the support plate. A pull rod 12 is fixed on one side of the workbench II. The pull rod is perpendicular to the plug-in area II, and one end of the pull rod passes through the protective box.

[0017] Optionally, in order to ensure the safety of workers and ensure smooth insertion of the toroidal inductor pins, a protective plate 13 is provided above workbench I and workbench II, the protective plate is fixedly connected to the protective box, and workbench II is fixedly connected to the support plate and the protective plate by positioning bolts. An insertion port 14 is provided on the protective plate, and the insertion port is located above the metal clip.

[0018] Optionally, in order to avoid the influence of the workbench II on the lead wire II when sliding, a movable opening 15 is provided in the middle of the support plate, and the lead wires I and II pass through the movable opening and extend through the lead holes on the protective box.

[0019] Optionally, in order to effectively protect the portion of the lead wires I and II extending out of the protection box, a thickened insulation layer is provided on the wire bodies of the lead wires I and II extending out of the protection box.

[0020] 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 with adjustable spacing, comprising a protective box (1), the top of the protective box having no cover, characterized in that: A support plate (2) is fixed in the middle and upper part of the inner cavity of the protection box, and a workbench I (3) and a workbench II (4) are arranged on the support plate. The workbench I is fixedly connected to the support plate, and the workbench II is placed on the support plate. The workbench I and the workbench II are respectively provided with a long strip-shaped plug-in area I (5) and a plug-in area II (6). The plug-in area I and the plug-in area II are parallel to each other. A plurality of metal clips (7) are horizontally and longitudinally distributed at intervals on the plug-in area I and the plug-in area II. The metal clips are vertically embedded in the workbench I and the workbench II. The bottoms of the workbench I and the workbench II are respectively provided with guides. Lead wire I (8) and lead wire II (9), lead wire I is connected in series with the metal clip of plug-in area I, lead wire II is connected in series with the metal clip of plug-in area II, lead wire I and lead wire II extend through the lead-out hole on the protection box, long strip sliding holes (10) are provided on both ends of plug-in area II on the workbench II, the sliding holes are perpendicular to the plug-in area II, positioning bolts (11) are provided on the sliding holes, the workbench II is fixedly connected to the support plate through the positioning bolts, a pull rod (12) is provided on one side of the workbench II, the pull rod is perpendicular to the plug-in area II, and one end of the pull rod passes through the protection box.

2. The toroidal inductor withstand voltage test fixture with adjustable row spacing according to claim 1, characterized in that: A protective plate (13) is provided above the workbench I and the workbench II. The protective plate is fixedly connected to the protective box. The workbench II is fixedly connected to the support plate and the protective plate via positioning bolts. An insertion port (14) is provided on the protective plate. The insertion port is located above the metal clip.

3. The toroidal inductor withstand voltage test fixture with adjustable row spacing according to claim 1, characterized in that: A movable opening (15) is provided in the middle of the support plate, and the lead wires I and II pass through the movable opening and extend out through the lead-out hole on the protection box.

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

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