An inductance testing device and testing method for a magnetic core product

Abstract

The present invention provides an inductor testing device and a testing method for a magnetic core product, which relates to the technical field of inductor testing, and includes: a mounting unit, a conductive unit, a pressing unit and a connecting unit; the conductive unit is mounted on the mounting unit; the pressing unit is mounted on the top of the mounting unit, and 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 testing instrument with the conductive unit; the present invention improves the connection efficiency between the copper wire of the magnetic core product and the external testing instrument, and also improves the disconnection efficiency between the copper wire of the magnetic core product and the external testing instrument; it solves 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, resulting in trouble in connecting and disassembling the copper wire on the magnetic core and the wire on the testing instrument, which affects the inductor testing efficiency of the magnetic core product.

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 testing method for magnetic core products. Background Art

[0002] Magnetic core products refer to a kind of sintered magnetic metal oxide composed of various iron oxide mixtures; due to sintering and grinding reasons, the inductance of some magnetic core products may not meet the specified inductance requirements; therefore, during the production of magnetic core products, inductance testing is required.

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

[0004] 1. The copper wire on the magnetic core product and the wire on the testing instrument are generally connected through alligator clips, resulting in trouble in connecting and disconnecting the copper wire on the magnetic core and the wire on the testing instrument, which affects the inductance testing efficiency of the magnetic core product;

[0005] 2. Generally, only one inductance testing instrument is used to test the inductance of the magnetic core product, and the magnetic core product cannot be tested for inductance multiple times. When there are large errors in the inductance testing instrument, the staff cannot discover them in time, reducing the inductance testing accuracy of the magnetic core product. Summary of the Invention

[0006] The embodiments of the present disclosure relate to an inductance testing device and testing method for magnetic core products, which have an installation unit, a conductive unit, a pressing unit, and a connecting unit; improving the connection efficiency between the copper wire of the magnetic core product and the external testing instrument, and also improving the disconnection efficiency between the copper wire of the magnetic core product and the external testing instrument; realizing two tests of the magnetic core product. When the numerical deviations of the two tests are large, the staff can recalibrate the testing instrument, improving the inductance testing accuracy of the magnetic core product; solving the problems that the copper wire on the magnetic core product and the wire on the testing instrument are generally connected through alligator clips and the magnetic core product cannot be tested for inductance multiple times.

[0007] In the first aspect of the present disclosure, an inductance testing device for magnetic core products is provided, including: an installation unit, a conductive unit, a pressing unit, and a connecting unit; the conductive unit is installed on the installation unit, and the conductive unit is used to clamp the copper wire on the magnetic core product;

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

[0009] The installation unit includes: an insulating mounting base and an insulating limiting plate; there are two insulating limiting plates in total, and the two insulating limiting plates are installed on the front and back sides of the insulating mounting base by screws, and two wire guiding holes A are respectively formed in 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 guiding rod; there are four circular mounting shafts in total, and the four circular mounting shafts are fixedly installed inside the two insulating limiting plates; there are four insulating sliders in total, and the four insulating sliders are slidably installed on the insulating mounting base and the four circular mounting shafts, and wire guiding holes B are respectively formed in the four insulating sliders; there are eight insulating guiding rods in total, and the eight insulating guiding rods are slidably installed on the four insulating sliders.

[0011] In at least some embodiments, the conductive unit further includes: a metal conductive plate, a metal conductive block, a wire fixing frame A, and a wire pressing nail A; there are four metal conductive plates in total, and the four metal conductive plates are fixedly installed inside the eight insulating guiding rods; there are four metal conductive blocks in total, and the four metal conductive blocks are installed on the outer sides of the two insulating limiting 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 sides of the 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 the four wire guiding holes A and the four wire guiding holes B; there are four wire pressing nails A in total, and the four wire pressing nails A are threadedly connected to the four wire fixing frames A.

[0012] In at least some embodiments, the conductive unit further includes: a return spring, a limiting snap ring A, and a spiral spring A; there are eight return springs in total, and the eight return springs are installed outside the four circular mounting shafts; the inner ends of the eight return springs are fixedly connected to the four insulating sliders, and the outer ends of the eight return springs are fixedly connected to the two insulating limiting plates; there are eight limiting snap rings A in total, and the eight limiting snap rings A are fixedly installed at the outer ends of the eight insulating guiding rods, and the inner sides of the eight limiting snap rings A are in contact with the four insulating sliders; there are eight spiral springs A in total, and the eight spiral springs A are installed outside the eight insulating guiding rods, and the eight spiral 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 guiding shaft and an insulating force-receiving plate; there are four circular guiding shafts in total, and the four circular guiding shafts are fixedly installed on the top of the insulating mounting base; the insulating force-receiving plate is slidably installed outside the four circular guiding shafts, and two copper wire insertion slots are formed in the insulating force-receiving plate.

[0014] In at least some embodiments, the pressing unit further includes: an insulating pressing frame, a limiting snap ring B, and a spiral 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 stress plate, and the four insulating pressing frames are also in contact with the four insulating sliders; there are four limiting snap rings B in total, and the four limiting snap rings B are fixedly installed at the tops of the four circular guiding shafts, and the bottoms of the four limiting snap rings B are in contact with the insulating stress plate; there are four spiral springs B in total, and the four spiral springs B are installed outside the four circular guiding shafts, and the four spiral springs B are located between the insulating mounting base and the insulating stress 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 limiting snap ring C; there are four circular mounting rods in total, and the four circular mounting rods are fixedly installed on the left and right sides of the insulating mounting base; the rectangular insulating frame is slidably installed outside the four circular mounting rods; there are four metal connecting blocks in total, and the four metal connecting blocks are slidably installed 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 limiting snap rings C in total, and the two limiting snap rings C are fixedly installed on the two circular mounting rods on the right side.

[0016] In at least some embodiments, the connecting unit further includes: a spiral spring C, a limiting snap ring D, and a limiting snap ring E; there are two spiral springs C in total, and the two spiral springs C are installed on the two circular mounting rods on the right side, and the two spiral springs C are located between the rectangular insulating frame and the two limiting snap rings C; there are four limiting snap rings D in total, and the four limiting snap rings D are fixedly installed outside the four metal connecting blocks, and the four limiting snap rings D are located outside the rectangular insulating frame; there are four limiting snap rings E in total, and the four limiting snap rings E are fixedly installed outside the four metal connecting blocks, and the four limiting snap rings E are located inside the rectangular insulating frame.

[0017] In at least some embodiments, the connecting unit further includes: a spiral spring D, a wire fixing frame B, and a wire pressing nail B; there are four spiral springs D in total, and the four spiral springs D are installed outside the four metal connecting blocks, and the four spiral springs C are located between the rectangular insulating frame and the four limiting snap rings E; there are four wire fixing frames B in total, and the four wire fixing frames B are fixedly installed on the outer sides of the four metal connecting blocks; there are four wire pressing nails B in total, and the four wire pressing nails 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 as follows:

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

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

[0022] 4), When the deviation between the two test values is relatively 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 in the present invention plays a positioning role in the insertion position of the copper wire 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 down the magnetic core product and the insulating force-bearing plate, the four insulating pressing frames can press the four insulating sliders, causing the four insulating sliders to move inward simultaneously; when the four insulating sliders move inward simultaneously, the four metal conductive plates can elastically contact the copper wire of the magnetic core product, 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;

[0026] In addition, when the staff removes the tested magnetic core product, the insulating force-bearing plate automatically resets upward under the action of the four helical springs B; when the insulating force-bearing plate drives the four insulating pressing frames to reset upward, the four insulating sliders automatically move outward under the action of the eight reset tension springs, causing the four metal conductive plates to automatically separate from the copper wire of the magnetic core product, and improving the disconnection efficiency between the copper wire of the magnetic core product and the external testing instrument.

[0027] 2. The provision of the four wire fixing frames B in the present invention facilitates the connection of two inductance testing instruments by the staff. When the two metal connection blocks on the front side come into contact with the two metal conductive blocks on the front side, the inductance testing instrument on the front side operates, and the inductance testing instrument on the rear side stops operating. When the staff slides the rectangular insulating frame to the right, the two metal connection blocks on the front side separate from the two metal conductive blocks on the front side, and the two metal connection blocks on the rear side come into contact with the two metal conductive blocks on the rear side. When the two metal connection blocks on the rear side come into contact with the two metal conductive blocks on the rear side, the inductance testing instrument on the rear side operates, and the inductance testing instrument on the front side stops operating, realizing two tests on the magnetic core product. When the numerical deviations of the two tests are relatively large, the staff can recalibrate the testing instrument, improving the inductance testing 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 the two helical springs C. When the metal connection block comes into contact with the metal conductive block, the metal conductive block can push the metal connection block to move, ensuring that the metal connection block and the metal conductive block are always in elastic contact and improving the power connection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0030] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0031] In the drawings:

[0032] Figure 1 The three-dimensional structure diagram of the present invention is shown.

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

[0034] Figure 3 The present invention is shown Figure 2 The partial enlarged structural diagram of area A in the present invention is shown.

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

[0036] Figure 5 The present invention is shown Figure 1 The central sectional structural diagram of the present invention is shown.

[0037] Figure 6 The present invention is shown Figure 5 The partial enlarged structural diagram of area B in the present invention is shown.

[0038] Figure 7 The structural diagram of the connection unit of the present invention is shown.

[0039] Figure 8 shows the top - view structural schematic diagram of the present invention Figure 1

[0040] Figure 9 shows the present invention Figure 8 The partial enlarged structural schematic diagram of area C in

[0041] Figure 10 shows the present invention Figure 8 The partial enlarged structural schematic diagram of area D in

[0042] List of reference numerals:

[0043] 100, mounting unit; 101, insulating mounting base; 102, insulating limiting plate; 1021, wire guiding hole A;

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

[0045] 300, pressing unit; 301, circular guiding shaft; 302, insulating stress - bearing plate; 3021, copper wire insertion slot hole; 303, insulating pressing frame; 304, limiting snap ring B; 305, helical spring B;

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

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

[0048] Embodiment: Please refer to Figures 1 to 10 ​As shown in the figure: The present invention provides an inductor testing device for a magnetic core product, comprising: a mounting unit 100, a conductive unit 200, a pressing unit 300, and a connecting unit 400; the conductive unit 200 is mounted on the mounting unit 100, and the conductive unit 200 is used for clamping the copper wire on the magnetic core product; the pressing unit 300 is mounted 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 for pressing the conductive unit 200; the connecting unit 400 is mounted outside the mounting unit 100, and the connecting unit 400 is used for connecting an external testing instrument to the conductive unit 200; the mounting unit 100 comprises: an insulating mounting base 101 and an insulating limiting plate 102; there are two insulating limiting plates 102 in total, and the two insulating limiting plates 102 are mounted on the front and rear sides of the insulating mounting base 101 by screws, and two wire guiding holes A1021 are respectively formed in the two insulating limiting plates 102.

[0049] In the embodiments of the present disclosure, such as 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 in total, and the four circular mounting shafts 201 are fixedly installed inside two insulating limit plates 102. There are four insulating sliders 202 in total, and the four insulating sliders 202 are slidably installed on the insulating mounting base 101 and the four circular mounting shafts 201, and wire guiding holes B2021 are respectively formed in the four insulating sliders 202. There are eight insulating guide rods 203 in total, and the eight insulating guide rods 203 are slidably installed on the four insulating sliders 202. The conductive unit 200 further includes: a metal conductive plate 204, a metal conductive block 205, a wire fixing frame A206, and a wire pressing nail A207. There are four metal conductive plates 204 in total, and the four metal conductive plates 204 are fixedly installed inside the eight insulating guide rods 203. There are four metal conductive blocks 205 in total, and the four metal conductive blocks 205 are installed on the outer sides of the two insulating limit plates 102 by screws. There are four wire fixing frames A206 in total, and the four wire fixing frames A206 are fixedly installed on the outer sides of the four metal conductive plates 204. The four wire fixing frames A206 are electrically connected to the four metal conductive blocks 205 through four wires, and the four wires pass through the four wire guiding holes A1021 and the four wire guiding holes B2021. There are four wire pressing nails A207 in total, and the four wire pressing nails A207 are threadedly connected to the four wire fixing frames A206. The conductive unit 200 further includes: a return spring 208, a limit retaining ring A209, and a helical spring A210. There are eight return springs 208 in total, and the eight return springs 208 are installed outside the four circular mounting shafts 201. The inner ends of the eight return springs 208 are fixedly connected to the four insulating sliders 202, and the outer ends of the eight return springs 208 are fixedly connected to the two insulating limit plates 102. There are eight limit retaining rings A209 in total, and the eight limit retaining rings A209 are fixedly installed at the outer ends of the eight insulating guide rods 203, and the inner sides of the eight limit retaining rings A209 are in contact with the four insulating sliders 202. There are eight helical springs A210 in total, and the eight helical springs A210 are installed outside the eight insulating guide rods 203, and the eight helical 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 guiding shaft 301 and an insulating stress-bearing plate 302; there are four circular guiding shafts 301 in total, and the four circular guiding shafts 301 are fixedly installed on the top of the insulating mounting base 101; the insulating stress-bearing plate 302 is slidably installed outside the four circular guiding shafts 301, and two copper wire insertion slots 3021 are formed on the insulating stress-bearing plate 302; the pressing unit 300 further includes: an insulating pressing frame 303, a limiting snap ring B 304 and a spiral spring B 305; there are four insulating pressing frames 303 in total, and the four insulating pressing frames 303 are fixedly installed on the bottom of the insulating stress-bearing plate 302, and the four insulating pressing frames 303 are also in contact with the four insulating sliders 202; there are four limiting snap rings B 304 in total, and the four limiting snap rings B 304 are fixedly installed at the top ends of the four circular guiding shafts 301, and the bottom of the four limiting snap rings B 304 is in contact with the insulating stress-bearing plate 302; there are four spiral springs B 305 in total, and the four spiral springs B 305 are installed outside the four circular guiding shafts 301, and the four spiral springs B 305 are located between the insulating mounting base 101 and the insulating stress-bearing plate 302;

[0051] Its specific function is as follows: Since two copper wire insertion slots 3021 are formed on the insulating stress-bearing plate 302, it plays a positioning role for 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 3021 and then presses down the magnetic core product and the insulating stress-bearing plate 302, the four insulating pressing frames 303 can press the four insulating sliders 202, causing the four insulating sliders 202 to move inward simultaneously; also, since the eight insulating guide rods 203 are slidably installed on the four insulating sliders 202, and the eight spiral springs A 210 are installed outside the eight insulating guide rods 203, and the eight spiral springs A 210 are located between the four insulating sliders 202 and the four metal conductive plates 204, when the four insulating sliders 202 move inward simultaneously, the four metal conductive plates 204 can elastically contact the copper wire of the magnetic core product, 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;

[0052] In addition, since four helical springs B305 are installed outside the four circular guide shafts 301 and the four helical springs B305 are located between the insulating mounting base 101 and the insulating force-bearing plate 302, when the staff removes the tested magnetic core product, the insulating force-bearing plate 302 automatically resets upward under the action of the four helical springs B305; also, since eight return springs 208 are installed outside the four circular mounting shafts 201, the inner ends of the eight return springs 208 are fixedly connected to the four insulating sliders 202, and the outer ends of the eight return springs 208 are fixedly connected to the two insulating limit plates 102. When the insulating force-bearing 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 return springs 208, so that the four metal conductive plates 204 are automatically separated from the copper wire of the magnetic core product, improving the disconnection efficiency between the copper wire of the magnetic core product and the external test instrument.

[0053] In the embodiments of the present disclosure, as Figure 7 , Figure 9 and Figure 10As shown, the connection unit 400 includes: a circular mounting rod 401, a rectangular insulating frame 402, a metal connection block 403, and a limit retaining ring C404; there are four circular mounting rods 401 in total, and the four circular mounting rods 401 are fixedly installed on the left and right sides of the insulating mounting base 101; the rectangular insulating frame 402 is slidably installed outside the four circular mounting rods 401; there are four metal connection blocks 403 in total, 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; there are two limit retaining rings C404 in total, and the two limit retaining rings C404 are fixedly installed on the two circular mounting rods 401 on the right side; the connection unit 400 further includes: a helical spring C405, a limit retaining ring D406, and a limit retaining ring E407; there are two helical springs C405 in total, and the two helical springs C405 are installed on the two circular mounting rods 401 on the right side, and the two helical springs C405 are located between the rectangular insulating frame 402 and the two limit retaining rings C404; there are four limit retaining rings D406 in total, and the four limit retaining rings D406 are fixedly installed outside the four metal connection blocks 403, and the four limit retaining rings D406 are located outside the rectangular insulating frame 402; there are four limit retaining rings E407 in total, and the four limit retaining rings E407 are fixedly installed outside the four metal connection blocks 403, and the four limit retaining rings E407 are located inside the rectangular insulating frame 402; the connection unit 400 further includes: a helical spring D408, a wire fixing frame B409, and a wire pressing nail B410; there are four helical springs D408 in total, and the four helical springs D408 are installed outside the four metal connection blocks 403, and the four helical springs C405 are located between the rectangular insulating frame 402 and the four limit retaining rings E407; there are four wire fixing frames B409 in total, and the four wire fixing frames B409 are fixedly installed outside the four metal connection blocks 403; there are four wire pressing nails B410 in total, and the four wire pressing nails B410 are threadedly connected to the four wire fixing frames B409;

[0054] Its specific functions are as follows: Since the four wire fixing frames B409 are fixedly installed on the outer sides of the four metal connection 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 two inductance testing instruments. When the two metal connection blocks 403 on the front side are in contact with the two metal conductive blocks 205 on the front side, the inductance testing instrument on the front side works, and the inductance testing instrument on the rear side stops working; Also, since the rectangular insulating frame 402 is slidably installed outside the four circular mounting rods 401, when the staff slides the rectangular insulating frame 402 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. When the two metal connection blocks 403 on the rear side are in contact with the two metal conductive blocks 205 on the rear side, the inductance testing instrument on the rear side works, and the inductance testing instrument on the front side stops working, realizing two tests on the magnetic core product. When the deviation between the two test values is relatively large, the staff can recalibrate the testing instrument, improving the inductance testing accuracy of the magnetic core product;

[0055] In addition, since the two helical springs C405 are installed on the two circular mounting rods 401 on the right side, and the two helical springs C405 are located between the rectangular insulating frame 402 and the two limit retaining rings 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 helical springs C405; Also, since the inner ends of the four metal connection blocks 403 are provided with rounded corners, and the four helical springs D408 are installed outside the four metal connection blocks 403, and the four helical springs C405 are located between the rectangular insulating frame 402 and the four limit retaining rings E407, when the metal connection block 403 is in contact with the metal conductive block 205, the metal conductive block 205 can push the metal connection block 403 to move, ensuring that the metal connection block 403 and the metal conductive block 205 are always in elastic contact, improving the power connection effect.

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

[0057] 1). Install two inductance testing instruments on the front and rear sides of the installation unit 100, then connect the wires of the front inductance testing instrument to the two wire fixing frames B409 on the front side, and connect the wires of the rear inductance testing 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 down the magnetic core product and the insulating force-bearing plate 302;

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

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

[0061] 5) Remove the magnetic core product after testing.

[0062] Specific usage method and function of this embodiment:

[0063] When the present invention is used, first, two inductance test instruments are installed on the front and rear sides of the installation unit 100. Then, the wires of the front-side inductance test instrument are connected to the two wire fixing frames B409 on the front side, and the wires of the rear-side 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 for the insertion position of the copper wires of the magnetic core product; then, press down the magnetic core product and the insulating force-bearing plate 302. 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 simultaneously; when the four insulating sliders 202 move inward simultaneously, the four metal conductive plates 204 can elastically contact the copper wires of the magnetic core product, 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 result appears on the front-side inductance test instrument, the staff then slides the rectangular insulating frame 402 to the right and waits for the test result to appear on the rear-side inductance test instrument; the two tests of the magnetic core product are realized. When the deviation between the two test values is large, the staff can recalibrate the test instrument, improving the inductance test accuracy of the magnetic core product; remove the magnetic core product after testing; when the staff removes the magnetic core product after testing, the insulating force-bearing plate 302 automatically resets upward under the action of the four spiral springs B305; when the insulating force-bearing 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, separating the four metal conductive plates 204 from the copper wires of the magnetic core product automatically, and improving the disconnection efficiency between the copper wires 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 the two spiral springs C405; when the metal connection block 403 contacts the metal conductive block 205, the metal conductive block 205 can push the metal connection block 403 to move, ensuring that the metal connection block 403 and the metal conductive block 205 are always in elastic contact and improving the power connection effect.

[0064] In this article, the following points need to be noted:

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

[0066] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0067] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A magnetic core product inductance testing device, comprising: A mounting unit (100), a conductive unit (200), a pressing unit (300) and a connecting unit (400); characterized in that the conductive unit (200) is mounted on the mounting unit (100), and the conductive unit (200) is used to clamp the copper wire on the magnetic core product; The pressing unit (300) is mounted 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 mounted 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 in total, 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); The conductive unit (200) comprises: a metal conductive block (205); a total of four metal conductive blocks (205) are provided, and the four metal conductive blocks (205) are mounted on the outside of two insulating limit plates (102) by means of screws; The connection unit (400) comprises: a circular mounting rod (401), a rectangular insulating frame (402) and a metal connection block (403); a total of four metal connection blocks (403) are provided, and the four metal connection blocks (403) are slidably mounted 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.

2. The inductance testing device for magnetic core products according to claim 1, characterized in that: The conductive unit (200) further 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 mounted on the inner sides of the two insulating limit plates (102); a total of four insulating sliders (202) are provided, 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 a wire guide hole B (2021); a total of eight insulating guide rods (203) are provided, and the eight insulating guide rods (203) are slidably mounted 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 wire fixing frame A (206) and a wire pressing pin 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 eight insulating guide rods (203); a total of four wire fixing frames A (206) are provided, and the four wire fixing frames A (206) are fixedly mounted on the outer sides 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); a total of four wire pressing pins A (207) are provided, and the four wire pressing pins A (207) are threadedly connected to the four wire fixing frames A (206).

4. The inductance testing device for magnetic core products 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 ( The eight limit collars A (209) are provided 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); the eight coil springs A (210) are provided 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); a total of four insulating pressing frames (303) are provided, 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); a total of four limiting clamp rings B (304) are provided, 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); a total of four coil springs B (305) are provided, 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) further comprises: a limit clamp ring C (404); four circular mounting rods (401) are provided in total, 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 outside the four circular mounting rods (401); and two limit clamp rings C (404) are provided in total, and the two limit clamp rings C (404) are fixedly installed 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 in total, 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 in total, 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 in total, 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 springs D (408) are provided in total of four, 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 insulating frame (402) and the four limiting clamps E (407); the wire fixing frames B (409) are provided in total of four, 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 in total of four, 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 stress plate (302) downward; 3) When the test result appears on the inductance test instrument at the front side, the staff member slides the rectangular insulating frame (402) to the right and waits for the test result to appear on the inductance test instrument at 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 core product.

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