Magnetic core product inductance testing device and testing method

Abstract

The invention provides a magnetic core product inductance testing device and method, and relates to the technical field of inductance testing, and the device comprises an installation unit, a conductive unit, a pressing unit and a connection unit. The conductive unit is mounted on the mounting unit; the pressing unit is mounted at the top of the mounting unit, the conductive unit is located below the pressing unit, and the pressing unit is used for pressing the conductive unit; the connecting unit is mounted outside the mounting unit, and the connecting unit is used for connecting an external test instrument with the conductive unit; according to the invention, the connection efficiency of the copper wire of the magnetic core product and the external test instrument is improved, and the disconnection efficiency of the copper wire of the magnetic core product and the external test instrument is also improved; the problems that a copper wire on a magnetic core product is generally connected with a wire on a test instrument through an alligator clip, so that the copper wire on the magnetic core product and the wire on the test instrument are troublesome to connect and disassemble, and the inductance test efficiency of the magnetic core product is affected are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of inductance testing, and more specifically, particularly relates to an inductance testing device and a testing method for a magnetic core product. Background Art

[0002] Magnetic core products refer to a sintered magnetic metal oxide composed of a mixture of various iron oxides. Due to sintering and grinding, the inductance of some magnetic core products may not meet the specified inductance requirements. Therefore, inductance testing is required during the production of magnetic core products.

[0003] The inductance test devices currently used still have the following problems:

[0004] 1. The copper wire on the core product and the wire on the test instrument are generally connected through an alligator clip, which makes it difficult to connect and remove the copper wire on the core and the wire on the test instrument, affecting the inductance test efficiency of the core product;

[0005] 2. Generally, only one inductance test instrument is used to test the inductance of the core product. It is impossible to perform multiple inductance tests on the core product. When there is a large error in the inductance test instrument, the staff cannot find it in time, which reduces the inductance test accuracy of the core product. Summary of the invention

[0006] The disclosed embodiments relate to an inductance testing device and method for a magnetic core product, which comprises an installation unit, a conductive unit, a pressing unit and a connecting unit; the connection efficiency between the copper wire of the magnetic core product and an external testing instrument is improved, and the disconnection efficiency between the copper wire of the magnetic core product and the external testing instrument is also improved; two tests of the magnetic core product are realized, and when the numerical deviations of the two tests are large, the staff can recalibrate the testing instrument, thereby improving the inductance testing accuracy of the magnetic core product; and the problem that the copper wire on the magnetic core product and the wire on the testing instrument are generally connected by an alligator clip and that the magnetic core product cannot be subjected to multiple inductance tests is solved.

[0007] In a first aspect of the present disclosure, a magnetic core product inductance test device is provided, comprising: a mounting unit, a conducting unit, a pressing unit and a connecting unit; the conducting unit is mounted on the mounting unit, and the conducting unit is used to clamp the copper wire on the magnetic core product;

[0008] The pressing unit is installed on the top of the mounting unit, and the conductive unit is located below the pressing unit, and the pressing unit is used to press the conductive unit; the connecting unit is installed outside the mounting unit, and the connecting unit is used to connect an external test instrument to the conductive unit;

[0009] The mounting unit comprises: an insulating mounting seat and an insulating limiting plate; there are two insulating limiting plates in total, and the two insulating limiting plates are mounted on the front and rear sides of the insulating mounting seat by screws, and two wire guide holes A are respectively provided on the two insulating limiting plates.

[0010] In at least some embodiments, the conductive unit includes: a circular mounting shaft, an insulating slider and an insulating guide rod; there are four circular mounting shafts in total, and the four circular mounting shafts are fixedly mounted on the inner sides of two insulating limit plates; there are four insulating sliders in total, and the four insulating sliders are slidably mounted on the insulating mounting seat and the four circular mounting shafts, and the four insulating sliders are respectively provided with wire guide holes B; there are eight insulating guide rods in total, and the eight insulating guide rods are slidably mounted on the four insulating sliders.

[0011] In at least some embodiments, the conductive unit also includes: a metal conductive plate, a metal conductive block, a wire fixing frame A and a wire pressing pin A; there are four metal conductive plates in total, and the four metal conductive plates are fixedly installed on the inner side of eight insulating guide rods; there are four metal conductive blocks in total, and the four metal conductive blocks are installed on the outer side of two insulating limit plates by screws; there are four wire fixing frames A in total, and the four wire fixing frames A are fixedly installed on the outer side of four metal conductive plates; the four wire fixing frames A are electrically connected to the four metal conductive blocks through four wires, and the four wires pass through four wire guide holes A and four wire guide holes B; there are four wire pressing pins A in total, and the four wire pressing pins A are threadedly connected to the four wire fixing frames A.

[0012] In at least some embodiments, the conductive unit further includes: a reset spring, a limit clamp ring A and a coil spring A; a total of eight reset springs are provided, and the eight reset springs are installed on the outside of four circular mounting shafts; the inner ends of the eight reset springs are fixedly connected to four insulating sliders, and the outer ends of the eight reset springs are fixedly connected to two insulating limit plates; a total of eight limit clamp rings A are provided, and the eight limit clamp rings A are fixedly installed on the outer ends of eight insulating guide rods, and the inner sides of the eight limit clamp rings A are in contact with the four insulating sliders; a total of eight coil springs A are provided, and the eight coil springs A are installed on the outside of eight insulating guide rods, and the eight coil springs A are located between the four insulating sliders and the four metal conductive plates.

[0013] In at least some embodiments, the pressing unit includes: a circular guide shaft and an insulating force-bearing plate; there are four circular guide shafts in total, and the four circular guide shafts are fixedly mounted on the top of the insulating mounting seat; the insulating force-bearing plate is slidably mounted on the outside of the four circular guide shafts, and two copper wire insertion slots are provided on the insulating force-bearing plate.

[0014] In at least some embodiments, the pressing unit also includes: an insulating pressing frame, a limiting clamp ring B and a coil spring B; there are four insulating pressing frames in total, and the four insulating pressing frames are fixedly installed at the bottom of the insulating force-bearing plate, and the four insulating pressing frames are also in contact with four insulating sliders; there are four limiting clamp rings B in total, and the four limiting clamp rings B are fixedly installed at the top ends of four circular guide shafts, and the bottoms of the four limiting clamp rings B are in contact with the insulating force-bearing plate; there are four coil springs B in total, and the four coil springs B are installed on the outside of the four circular guide shafts, and the four coil springs B are located between the insulating mounting seat and the insulating force-bearing plate.

[0015] In at least some embodiments, the connecting unit includes: a circular mounting rod, a rectangular insulating frame, a metal connecting block and a limit clamp ring C; there are four circular mounting rods in total, and the four circular mounting rods are fixedly mounted on the left and right sides of the insulating mounting seat; the rectangular insulating frame is slidably mounted on the outside of the four circular mounting rods; there are four metal connecting blocks in total, and the four metal connecting blocks are slidably mounted on the rectangular insulating frame, and the inner ends of the four metal connecting blocks are provided with rounded corners; the two metal connecting blocks on the front side are in contact with the two metal conductive blocks on the front side, and the two metal connecting blocks on the rear side are separated from the two metal conductive blocks on the rear side; when the rectangular insulating frame slides to the right, the two metal connecting blocks on the front side are separated from the two metal conductive blocks on the front side, and the two metal connecting blocks on the rear side are in contact with the two metal conductive blocks on the rear side; there are two limit clamp rings C in total, and the two limit clamp rings C are fixedly mounted on the two circular mounting rods on the right side.

[0016] In at least some embodiments, the connecting unit also includes: a coil spring C, a limit clamp D and a limit clamp E; there are two coil springs C, and the two coil springs C are installed on the two circular mounting rods on the right, and the two coil springs C are located between the rectangular insulating frame and the two limit clamps C; there are four limit clamps D, and the four limit clamps D are fixedly installed on the outside of the four metal connecting blocks, and the four limit clamps D are located on the outside of the rectangular insulating frame; there are four limit clamps E, and the four limit clamps E are fixedly installed on the outside of the four metal connecting blocks, and the four limit clamps E are located on the inside of the rectangular insulating frame.

[0017] In at least some embodiments, the connecting unit further includes: a coil spring D, a wire fixing frame B and a wire pressing pin B; a total of four coil springs D are provided, and the four coil springs D are installed on the outside of four metal connecting blocks, and four coil springs C are located between the rectangular insulating frame and four limit clamps E; a total of four wire fixing frames B are provided, and the four wire fixing frames B are fixedly installed on the outside of the four metal connecting blocks; a total of four wire pressing pins B are provided, and the four wire pressing pins B are threadedly connected to the four wire fixing frames B.

[0018] In at least some embodiments, the method for testing the inductance of a magnetic core product is:

[0019] 1) Install two inductance test instruments on the front and rear sides of the installation unit, connect the wires of the front inductance test instrument to the two wire fixing frames B on the front side, and connect the wires of the rear inductance test instrument to the two wire fixing frames B on the rear side;

[0020] 2) Insert the copper wire of the magnetic core product into the two copper wire insertion slots, and then press down the magnetic core product and the insulating stress plate;

[0021] 3) When the test result appears on the inductance test instrument on the front side, the staff slides the rectangular insulation frame to the right and waits for the test result to appear on the inductance test instrument on the rear side;

[0022] 4) When the deviation between the two test values ​​is large, the staff needs to recalibrate the test instrument;

[0023] 5) Remove the tested magnetic core product.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The setting of the two copper wire insertion slots of the present invention plays a positioning role in the copper wire insertion position of the magnetic core product. When the staff inserts the copper wire of the magnetic core product into the two copper wire insertion slots and then presses the magnetic core product and the insulating force plate downward, the four insulating pressing frames can press the four insulating sliders to move the four insulating sliders inward at the same time; when the four insulating sliders move inward at the same time, the four metal conductive plates can elastically contact with the copper wire of the magnetic core product, thereby realizing the automatic connection between the copper wire of the magnetic core product and the external test instrument, and improving the connection efficiency between the copper wire of the magnetic core product and the external test instrument;

[0026] In addition, when the staff removes the tested magnetic core product, the insulating stress plate automatically resets upward under the action of four coil springs B; when the insulating stress plate drives the four insulating pressing frames to reset upward, the four insulating slides automatically move outward under the action of eight reset springs, so that the four metal conductive plates are automatically separated from the copper wire of the magnetic core product, thereby improving the disconnection efficiency of the copper wire of the magnetic core product and the external testing instrument.

[0027] 2. The arrangement of the four wire fixing frames B of the present invention facilitates the staff to connect two inductance test instruments. When the two metal connection blocks on the front side are in contact with the two metal conductive blocks on the front side, the inductance test instrument on the front side works, and the inductance test instrument on the rear side stops working; when the staff slides the rectangular insulating frame to the right, the two metal connection blocks on the front side are separated from the two metal conductive blocks on the front side, and the two metal connection blocks on the rear side are in contact with the two metal conductive blocks on the rear side. When the two metal connection blocks on the rear side are in contact with the two metal conductive blocks on the rear side, the inductance test instrument on the rear side works, and the inductance test instrument on the front side stops working, thus realizing two tests of the magnetic core product. When the numerical deviations of the two tests are large, the staff can recalibrate the test instrument, thereby improving the inductance test accuracy of the magnetic core product.

[0028] In addition, when the staff releases the rectangular insulating frame, the rectangular insulating frame automatically resets to the left under the action of two coil springs C; when the metal connecting block contacts the metal conductive block, the metal conductive block can push the metal connecting block to move, ensuring that the metal connecting block is always in elastic contact with the metal conductive block, thereby improving the power connection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0030] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0031] In the attached picture:

[0032] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0033] Figure 2 The schematic diagram of the structure of the installation unit and the conductive unit of the present invention is shown.

[0034] Figure 3 The present invention is shown Figure 2 Schematic diagram of the local enlarged structure of area A in the middle.

[0035] Figure 4 The schematic diagram of the structure of the pressing unit of the present invention is shown.

[0036] Figure 5 The present invention is shown Figure 1 Schematic diagram of the central cut structure.

[0037] Figure 6 The present invention is shown Figure 5 Schematic diagram of the local enlarged structure of area B in the middle.

[0038] Figure 7 The schematic diagram of the structure of the connecting unit of the present invention is shown.

[0039] Figure 8 The present invention is shown Figure 1 Schematic diagram of the top view structure.

[0040] Fig. 9 The present invention is shown Figure 8 Schematic diagram of the local enlarged structure of the C area in the middle.

[0041] Fig.10 The present invention is shown Figure 8 Schematic diagram of the local enlarged structure of area D in the middle.

[0042] List of reference numerals:

[0043] 100, mounting unit; 101, insulating mounting seat; 102, insulating limit plate; 1021, wire guide hole A;

[0044] 200, conductive unit; 201, circular mounting shaft; 202, insulating slider; 2021, wire guide hole B; 203, insulating guide rod; 204, metal conductive plate; 205, metal conductive block; 206, wire fixing frame A; 207, wire pressing nail A; 208, reset tension spring; 209, limit clamp A; 210, spiral spring A;

[0045] 300, pressing unit; 301, circular guide shaft; 302, insulating force-bearing plate; 3021, copper wire insertion slot; 303, insulating pressing frame; 304, limit collar B; 305, spiral spring B;

[0046] 400, connecting unit; 401, circular mounting rod; 402, rectangular insulating frame; 403, metal connecting block; 404, limiting clamp ring C; 405, spiral spring C; 406, limiting clamp ring D; 407, limiting clamp ring E; 408, spiral spring D; 409, wire fixing frame B; 410, wire pressing nail B. DETAILED DESCRIPTION

[0047] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0048] Example: Please refer to Figures 1 to 10As shown: The present invention provides an inductance testing device for a magnetic core product, comprising: an installation unit 100, a conductive unit 200, a pressing unit 300 and a connecting unit 400; the conductive unit 200 is installed on the installation unit 100, and the conductive unit 200 is used to clamp the copper wire on the magnetic core product; the pressing unit 300 is installed on the top of the installation unit 100, and the conductive unit 200 is located below the pressing unit 300, and the pressing unit 300 is used to press the conductive unit 200; the connecting unit 400 is installed on the outside of the installation unit 100, and the connecting unit 400 is used to connect an external testing instrument to the conductive unit 200; the installation unit 100 comprises: an insulating mounting seat 101 and an insulating limiting plate 102; there are two insulating limiting plates 102, and the two insulating limiting plates 102 are installed on the front and rear sides of the insulating mounting seat 101 by screws, and two wire guide holes A1021 are respectively provided on the two insulating limiting plates 102.

[0049] In the present disclosure, Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the conductive unit 200 includes: a circular mounting shaft 201, an insulating slider 202 and an insulating guide rod 203; there are four circular mounting shafts 201, and the four circular mounting shafts 201 are fixedly mounted on the inner sides of the two insulating limit plates 102; there are four insulating sliders 202, and the four insulating sliders 202 are slidably mounted on the insulating mounting seat 101 and the four circular mounting shafts 201, and the four insulating sliders 202 are respectively provided with wire guide holes B2021; there are eight insulating guide rods 203, and the eight insulating guide rods 203 are slidably mounted on the four insulating sliders. The conductive unit 200 further comprises: a metal conductive plate 204, a metal conductive block 205, a wire fixing frame A206 and a wire pressing nail A207; a total of four metal conductive plates 204 are provided, and the four metal conductive plates 204 are fixedly installed on the inner side of the eight insulating guide rods 203; a total of four metal conductive blocks 205 are provided, and the four metal conductive blocks 205 are installed on the outer side of the two insulating limit plates 102 by screws; a total of four wire fixing frames A206 are provided, and the four wire fixing frames A206 are fixedly installed on the outer side of the four metal conductive plates 204; the four wires The fixing frame A206 is electrically connected to the four metal conductive blocks 205 through four wires, and the four wires pass through the four wire guide holes A1021 and the four wire guide holes B2021; there are four wire clamping nails A207, and the four wire clamping nails A207 are threadedly connected to the four wire fixing frames A206; the conductive unit 200 also includes: a reset spring 208, a limit collar A209 and a coil spring A210; there are eight reset springs 208, and the eight reset springs 208 are installed on the outside of the four circular mounting shafts 201; the inner of the eight reset springs 208 The ends of the eight return tension springs 208 are fixedly connected to the four insulating sliders 202, and the outer ends of the eight return tension springs 208 are fixedly connected to the two insulating limit plates 102; there are eight limit collars A209, which are fixedly installed on the outer ends of the eight insulating guide rods 203, and the inner sides of the eight limit collars A209 are in contact with the four insulating sliders 202; there are eight coil springs A210, which are installed on the outside of the eight insulating guide rods 203, and the eight coil springs A210 are located between the four insulating sliders 202 and the four metal conductive plates 204;

[0050] The pressing unit 300 includes: a circular guide shaft 301 and an insulating force-bearing plate 302; there are four circular guide shafts 301, and the four circular guide shafts 301 are fixedly installed on the top of the insulating mounting seat 101; the insulating force-bearing plate 302 is slidably installed on the outside of the four circular guide shafts 301, and two copper wire insertion slots 3021 are provided on the insulating force-bearing plate 302; the pressing unit 300 also includes: an insulating pressing frame 303, a limit collar B304 and a spiral spring B305; there are four insulating pressing frames 303, and the four insulating pressing frames 303 are fixed Installed at the bottom of the insulating force-bearing plate 302, and the four insulating pressing frames 303 are also in contact with the four insulating sliders 202; there are four limit collars B304, and the four limit collars B304 are fixedly installed on the top of the four circular guide shafts 301, and the bottoms of the four limit collars B304 are in contact with the insulating force-bearing plate 302; there are four coil springs B305, and the four coil springs B305 are installed on the outside of the four circular guide shafts 301, and the four coil springs B305 are located between the insulating mounting seat 101 and the insulating force-bearing plate 302;

[0051] Its specific function is as follows: because two copper wire insertion slots 3021 are provided on the insulating force-bearing plate 302, the copper wire insertion position of the magnetic core product is positioned. When the staff inserts the copper wire of the magnetic core product into the two copper wire insertion slots 3021 and then presses the magnetic core product and the insulating force-bearing plate 302 downward, the four insulating pressing frames 303 can press the four insulating sliders 202, so that the four insulating sliders 202 move inward at the same time; and because the eight insulating guide rods 203 are slidably mounted on the four insulating sliders 202, and the eight spiral springs A210 are mounted on the outside of the eight insulating guide rods 203, and the eight spiral springs A210 are located between the four insulating sliders 202 and the four metal conductive plates 204, when the four insulating sliders 202 move inward at the same time, the four metal conductive plates 204 can elastically contact with the copper wire of the magnetic core product, thereby realizing the automatic connection between the copper wire of the magnetic core product and the external testing instrument, and improving the connection efficiency between the copper wire of the magnetic core product and the external testing instrument;

[0052] In addition, because the four coil springs B305 are installed on the outside of the four circular guide shafts 301, and the four coil springs B305 are located between the insulating mounting seat 101 and the insulating force plate 302, when the staff removes the tested magnetic core product, the insulating force plate 302 automatically resets upward under the action of the four coil springs B305; and because the eight reset tension springs 208 are installed on the outside of the four circular mounting shafts 201, and the inner ends of the eight reset tension springs 208 are fixedly connected to the four insulating sliders 202, and the outer ends of the eight reset tension springs 208 are fixedly connected to the two insulating limit plates 102, when the insulating force plate 302 drives the four insulating pressing frames 303 to reset upward, the four insulating sliders 202 automatically move outward under the action of the eight reset tension springs 208, so that the four metal conductive plates 204 are automatically separated from the copper wire of the magnetic core product, thereby improving the disconnection efficiency of the copper wire of the magnetic core product and the external testing instrument.

[0053] In the present disclosure, Figure 7 , Fig. 9 and Fig.10As shown, the connection unit 400 includes: a circular mounting rod 401, a rectangular insulating frame 402, a metal connecting block 403 and a limiting collar C404; there are four circular mounting rods 401, and the four circular mounting rods 401 are fixedly mounted on the left and right sides of the insulating mounting seat 101; the rectangular insulating frame 402 is slidably mounted on the outside of the four circular mounting rods 401; there are four metal connecting blocks 403, and the four metal connecting blocks 403 are slidably mounted on the rectangular insulating frame 402, and the inner ends of the four metal connecting blocks 403 are provided with rounded corners; the two metal connecting blocks 403 on the front side are connected to the two metal conductive blocks 2 on the front side. 05 contact, the two metal connecting blocks 403 on the rear side are separated from the two metal conductive blocks 205 on the rear side; when the rectangular insulating frame 402 slides to the right, the two metal connecting blocks 403 on the front side are separated from the two metal conductive blocks 205 on the front side, and the two metal connecting blocks 403 on the rear side are in contact with the two metal conductive blocks 205 on the rear side; there are two limit collars C404, and the two limit collars C404 are fixedly mounted on the two circular mounting rods 401 on the right side; the connecting unit 400 also includes: a coil spring C405, a limit collar D406 and a limit collar E407; there are two coil springs C405, Two coil springs C405 are installed on the two circular mounting rods 401 on the right side, and the two coil springs C405 are located between the rectangular insulating frame 402 and the two limiting clamps C404; there are four limiting clamps D406, and the four limiting clamps D406 are fixedly installed on the outside of the four metal connecting blocks 403, and the four limiting clamps D406 are located on the outside of the rectangular insulating frame 402; there are four limiting clamps E407, and the four limiting clamps E407 are fixedly installed on the outside of the four metal connecting blocks 403, and the four limiting clamps E407 are located on the inside of the rectangular insulating frame 402; the connecting The unit 400 further includes: a coil spring D408, a wire fixing frame B409 and a wire pressing nail B410; there are four coil springs D408, which are installed outside the four metal connection blocks 403, and four coil springs C405 are located between the rectangular insulating frame 402 and the four limit collars E407; there are four wire fixing frames B409, which are fixedly installed outside the four metal connection blocks 403; there are four wire pressing nails B410, which are threadedly connected to the four wire fixing frames B409;

[0054] Its specific function is: because the four wire fixing frames B409 are fixedly installed on the outside of the four metal connecting blocks 403, and the four wire pressing nails B410 are threadedly connected to the four wire fixing frames B409, it is convenient for the staff to connect the two inductance test instruments. When the two metal connecting blocks 403 on the front side contact the two metal conductive blocks 205 on the front side, the inductance test instrument on the front side works, and the inductance test instrument on the rear side stops working; and because the rectangular insulating frame 402 is slidably installed on the outside of the four circular mounting rods 401, when the staff slides the rectangular insulating frame 402 to the right, ... When the insulating frame 402 is shaped, the two metal connecting blocks 403 on the front side are separated from the two metal conductive blocks 205 on the front side, and the two metal connecting blocks 403 on the rear side are in contact with the two metal conductive blocks 205 on the rear side. When the two metal connecting blocks 403 on the rear side are in contact with the two metal conductive blocks 205 on the rear side, the inductance test instrument on the rear side works, and the inductance test instrument on the front side stops working, thus realizing two tests of the magnetic core product. When the numerical deviations of the two tests are large, the staff can recalibrate the test instrument, thereby improving the inductance test accuracy of the magnetic core product.

[0055] In addition, because the two coil springs C405 are installed on the two circular mounting rods 401 on the right side, and the two coil springs C405 are located between the rectangular insulating frame 402 and the two limit clamps C404, when the staff releases the rectangular insulating frame 402, the rectangular insulating frame 402 automatically resets to the left under the action of the two coil springs C405; and because the inner ends of the four metal connecting blocks 403 are provided with rounded corners, and the four coil springs D408 are installed on the outside of the four metal connecting blocks 403, and the four coil springs C405 are located between the rectangular insulating frame 402 and the four limit clamps E407, when the metal connecting block 403 contacts the metal conductive block 205, the metal conductive block 205 can push the metal connecting block 403 to move, thereby ensuring that the metal connecting block 403 is always in elastic contact with the metal conductive block 205, thereby improving the power connection effect.

[0056] In an embodiment of the present disclosure, a method for testing the inductance of a magnetic core product is provided:

[0057] 1) Install two inductance test instruments on the front and rear sides of the installation unit 100, and then connect the wires of the front inductance test instrument to the two wire fixing frames B409 on the front side, and connect the wires of the rear inductance test instrument to the two wire fixing frames B409 on the rear side;

[0058] 2) Insert the copper wire of the magnetic core product into the two copper wire insertion slots 3021, and then press the magnetic core product and the insulating force-bearing plate 302 downward;

[0059] 3) When the test result appears on the inductance test instrument on the front side, the staff slides the rectangular insulating frame 402 to the right and waits for the test result to appear on the inductance test instrument on the rear side;

[0060] 4) When the deviation between the two test values ​​is large, the staff needs to recalibrate the test instrument;

[0061] 5) Remove the tested magnetic core product.

[0062] The specific usage and function of this embodiment are as follows:

[0063] When the present invention is used, firstly, two inductance test instruments are installed on the front and rear sides of the installation unit 100, and then the wires of the front inductance test instrument are connected to the two wire fixing frames B409 on the front side, and the wires of the rear inductance test instrument are connected to the two wire fixing frames B409 on the rear side; the copper wires of the magnetic core product are inserted into the two copper wire insertion slots 3021, which plays a positioning role in the insertion position of the copper wires of the magnetic core product; then the magnetic core product and the insulating force plate 302 are pressed downward, at this time, the four insulating pressing frames 303 can press the four insulating sliders 202, so that the four insulating sliders 202 move inward at the same time; when the four insulating sliders 202 move inward at the same time, the four metal conductive plates 204 can elastically contact with the copper wires of the magnetic core product, thereby realizing the automatic connection between the copper wires of the magnetic core product and the external test instrument, and improving the connection efficiency between the copper wires of the magnetic core product and the external test instrument; when the test results appear on the inductance test instrument on the front side, the staff slides the rectangular insulating frame 402 to the right again, and waits for the test results to appear on the inductance test instrument on the rear side; The magnetic core product is tested twice. When the numerical deviations of the two tests are large, the staff can recalibrate the test instrument, thereby improving the inductance test accuracy of the magnetic core product; the tested magnetic core product is removed; when the staff removes the tested magnetic core product, the insulating force plate 302 automatically resets upward under the action of four coil springs B305; when the insulating force plate 302 drives the four insulating pressing frames 303 to reset upward, the four insulating slide blocks 202 automatically move outward under the action of eight reset springs 208, so that the four metal conductive plates 204 are automatically separated from the copper wire of the magnetic core product, thereby improving the disconnection efficiency of the copper wire of the magnetic core product and the external test instrument; when the staff releases the rectangular insulating frame 402, the rectangular insulating frame 402 automatically resets to the left under the action of two coil springs C405; when the metal connecting block 403 contacts the metal conductive block 205, the metal conductive block 205 can push the metal connecting block 403 to move, thereby ensuring that the metal connecting block 403 and the metal conductive block 205 are always in elastic contact, thereby improving the power connection effect.

[0064] In this article, there are a few points to note:

[0065] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0066] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0067] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A magnetic core product inductance testing device, comprising: An installation unit (100), a conductive unit (200), a pressing unit (300) and a connecting unit (400); characterized in that the conductive unit (200) is installed on the installation unit (100), and the conductive unit (200) is used to clamp the copper wire on the magnetic core product; The pressing unit (300) is installed on the top of the mounting unit (100), and the conductive unit (200) is located below the pressing unit (300), and the pressing unit (300) is used to press the conductive unit (200); the connecting unit (400) is installed outside the mounting unit (100), and the connecting unit (400) is used to connect an external testing instrument to the conductive unit (200); The mounting unit (100) comprises: an insulating mounting seat (101) and an insulating limiting plate (102); two insulating limiting plates (102) are provided, and the two insulating limiting plates (102) are mounted on the front and rear sides of the insulating mounting seat (101) by means of screws, and two wire guide holes A (1021) are respectively provided on the two insulating limiting plates (102).

2. The inductance testing device for a magnetic core product according to claim 1, characterized in that: The conductive unit (200) comprises: a circular mounting shaft (201), an insulating slider (202) and an insulating guide rod (203); a total of four circular mounting shafts (201) are provided, and the four circular mounting shafts (201) are fixedly installed on the inner sides of two insulating limit plates (102); a total of four insulating sliders (202) are provided, and the four insulating sliders (202) are slidably installed on the insulating mounting seat (101) and the four circular mounting shafts (201), and the four insulating sliders (202) are respectively provided with wire guide holes B (2021); a total of eight insulating guide rods (203) are provided, and the eight insulating guide rods (203) are slidably installed on the four insulating sliders (202).

3. The inductance testing device for a magnetic core product according to claim 2, characterized in that: The conductive unit (200) further comprises: a metal conductive plate (204), a metal conductive block (205), a wire fixing frame A (206) and a wire pressing nail A (207); a total of four metal conductive plates (204) are provided, and the four metal conductive plates (204) are fixedly mounted on the inner sides of the eight insulating guide rods (203); a total of four metal conductive blocks (205) are provided, and the four metal conductive blocks (205) are mounted on the outer sides of the two insulating limit plates (102) by means of screws; the wire fixing frame A There are four wire fixing frames A (206) in total, and the four wire fixing frames A (206) are fixedly installed on the outside of the four metal conductive plates (204); the four wire fixing frames A (206) are electrically connected to the four metal conductive blocks (205) through four wires, and the four wires pass through four wire guide holes A (1021) and four wire guide holes B (2021); there are four wire clamping nails A (207) in total, and the four wire clamping nails A (207) are threadedly connected to the four wire fixing frames A (206).

4. The inductance testing device for a magnetic core product according to claim 3, characterized in that: The conductive unit (200) further comprises: a reset tension spring (208), a limit collar A (209) and a coil spring A (210); a total of eight reset tension springs (208) are provided, and the eight reset tension springs (208) are installed outside the four circular installation shafts (201); the inner ends of the eight reset tension springs (208) are fixedly connected to the four insulating sliders (202), and the outer ends of the eight reset tension springs (208) are fixedly connected to the two insulating limit plates (102); the limit collar A ( There are eight limit collars A (209) in total, and the eight limit collars A (209) are fixedly mounted on the outer ends of the eight insulating guide rods (203), and the inner sides of the eight limit collars A (209) are in contact with the four insulating sliders (202); there are eight coil springs A (210) in total, and the eight coil springs A (210) are mounted on the outside of the eight insulating guide rods (203), and the eight coil springs A (210) are located between the four insulating sliders (202) and the four metal conductive plates (204).

5. The inductance testing device for magnetic core products according to claim 3, characterized in that: The pressing unit (300) comprises: a circular guide shaft (301) and an insulating force-bearing plate (302); a total of four circular guide shafts (301) are provided, and the four circular guide shafts (301) are fixedly mounted on the top of the insulating mounting seat (101); the insulating force-bearing plate (302) is slidably mounted on the outside of the four circular guide shafts (301), and two copper wire insertion slots (3021) are provided on the insulating force-bearing plate (302).

6. The inductance testing device for magnetic core products according to claim 5, characterized in that: The pressing unit (300) further comprises: an insulating pressing frame (303), a limiting clamp ring B (304) and a coil spring B (305); the insulating pressing frames (303) are provided with four in total, and the four insulating pressing frames (303) are fixedly mounted on the bottom of the insulating force-bearing plate (302), and the four insulating pressing frames (303) are also in contact with four insulating sliders (202); the limiting clamp rings B (304) are provided with four in total, and the four limiting clamp rings B (304) are fixedly mounted on the top ends of four circular guide shafts (301), and the bottoms of the four limiting clamp rings B (304) are in contact with the insulating force-bearing plate (302); the coil springs B (305) are provided with four in total, and the four coil springs B (305) are mounted on the outside of the four circular guide shafts (301), and the four coil springs B (305) are located between the insulating mounting seat (101) and the insulating force-bearing plate (302).

7. The inductance testing device for magnetic core products according to claim 5, characterized in that: The connection unit (400) comprises: a circular mounting rod (401), a rectangular insulating frame (402), a metal connection block (403) and a limit collar C (404); a total of four circular mounting rods (401) are provided, and the four circular mounting rods (401) are fixedly installed on the left and right sides of the insulating mounting seat (101); the rectangular insulating frame (402) is slidably installed on the outside of the four circular mounting rods (401); a total of four metal connection blocks (403) are provided, and the four metal connection blocks (403) are slidably installed on the rectangular insulating frame (402), and the inner ends of the four metal connection blocks (403) are provided with rounded corners; The two metal connection blocks (403) on the front side are in contact with the two metal conductive blocks (205) on the front side, and the two metal connection blocks (403) on the rear side are separated from the two metal conductive blocks (205) on the rear side; when the rectangular insulating frame (402) slides to the right, the two metal connection blocks (403) on the front side are separated from the two metal conductive blocks (205) on the front side, and the two metal connection blocks (403) on the rear side are in contact with the two metal conductive blocks (205) on the rear side; and two limit clamps C (404) are provided in total, and the two limit clamps C (404) are fixedly mounted on the two circular mounting rods (401) on the right side.

8. The inductance testing device for magnetic core products according to claim 7, characterized in that: The connection unit (400) further comprises: a coil spring C (405), a limit clamp ring D (406) and a limit clamp ring E (407); two coil springs C (405) are provided, and the two coil springs C (405) are installed on the two circular installation rods (401) on the right side, and the two coil springs C (405) are located between the rectangular insulation frame (402) and the two limit clamp rings C (404); four limit clamp rings D (406) are provided, and the four limit clamp rings D (406) are fixedly installed on the outside of the four metal connection blocks (403), and the four limit clamp rings D (406) are located on the outside of the rectangular insulation frame (402); four limit clamp rings E (407) are provided, and the four limit clamp rings E (407) are fixedly installed on the outside of the four metal connection blocks (403), and the four limit clamp rings E (407) are located on the inside of the rectangular insulation frame (402).

9. The inductance testing device for magnetic core products according to claim 8, characterized in that: The connection unit (400) further comprises: a coil spring D (408), a wire fixing frame B (409) and a wire pressing nail B (410); the coil spring D (408) is provided with four in total, and the four coil springs D (408) are installed outside the four metal connection blocks (403), and the four coil springs C (405) are located between the rectangular insulation frame (402) and the four limit clamps E (407); the wire fixing frames B (409) are provided with four in total, and the four wire fixing frames B (409) are fixedly installed outside the four metal connection blocks (403); the wire pressing nails B (410) are provided with four in total, and the four wire pressing nails B (410) are threadedly connected to the four wire fixing frames B (409).

10. A method for testing the inductance of a magnetic core product, using the device for testing the inductance of a magnetic core product as claimed in claim 9, characterized in that: The steps are as follows: 1) Install two inductance test instruments on the front and rear sides of the installation unit (100), connect the wires of the front inductance test instrument to the two wire fixing frames B (409) on the front side, and connect the wires of the rear inductance test instrument to the two wire fixing frames B (409) on the rear side; 2) Insert the copper wire of the magnetic core product into the two copper wire insertion slots (3021), and then press the magnetic core product and the insulating force-bearing plate (302) downward; 3) When the test result appears on the inductance test instrument on the front side, the staff slides the rectangular insulating frame (402) to the right and waits for the test result to appear on the inductance test instrument on the rear side; 4) When the deviation between the two test values ​​is large, the staff needs to recalibrate the test instrument; 5) Remove the tested magnetic core product.

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