An inductance test fixture

Abstract

The utility model discloses an inductance test fixture belongs to inductance test technical field, including test seat and cylinder, be equipped with test groove on the test seat, the symmetrical sliding connection of test seat in has sliding board, one end of sliding board all is fixedly connected with test board, and the test board is located in test groove, the one side of mutual adhesion of test board all is equipped with thorn, the cylinder promotes the sliding of sliding board, through the design of the thorn on the test board, can also break the insulating paint layer to test while clamping inductance component lead, still need manual additional paint stripping procedure, and then test efficiency greatly promotes.

Description

Technical Field

[0001] This utility model relates to the field of inductance testing technology, and in particular to an inductance testing fixture. Background Technology

[0002] An inductor is an electromagnetic induction element made of insulated wire. It is one of the commonly used components in electronic circuits and is widely used in various electronic parts.

[0003] Before leaving the factory, inductors need to undergo a continuity test to determine whether they can achieve the set performance.

[0004] The existing test fixture is a spring-clamping test, which uses a cylinder to drive upper and lower springs to clamp the copper wire for continuity testing.

[0005] However, this method is only applicable to finished products that have been stripped or soldered. For inductor components that have not been stripped, it cannot penetrate the lead insulation layer and requires an additional manual stripping process. When a large number of inductor components need to be tested, this method will greatly reduce the testing efficiency. Utility Model Content

[0006] The purpose of this invention is to solve the technical problem in the prior art that the lead wire insulation varnish cannot be penetrated for inductor components that have not been stripped, requiring an additional manual stripping process. Therefore, this invention proposes an inductor testing fixture.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An inductance testing fixture includes a test base and a cylinder. The test base has a test groove. Sliding plates are symmetrically slidably connected inside the test base. A test plate is fixedly connected to one end of each sliding plate. The test plates are located inside the test groove. The sides of the test plates that are in contact with each other are provided with spikes. The cylinder pushes the sliding plates to slide.

[0008] Preferably, the cone angle of the spike is 30-60°.

[0009] Preferably, the cone angle of the spike is 35°.

[0010] Preferably, the height of the spike is 0.3-1.5 mm.

[0011] Preferably, the height of the spike is 1 mm.

[0012] Preferably, the test slots are designed in two sets.

[0013] Preferably, it also includes a base, and both the test seat and the cylinder are fixedly connected to the base; the cylinder is designed symmetrically in two sets; the end of the sliding plate away from the test plate extends out of the test seat.

[0014] Preferably, a push plate is fixedly connected to the output end of the cylinder.

[0015] Preferably, the end of the sliding plate away from the test plate is provided with a magnet; the push plate is made of iron.

[0016] Preferably, a cover plate is detachably connected to the top of the test seat; the sliding plate is located between the cover plate and the test seat.

[0017] Compared with the prior art, the present invention provides an inductance testing fixture, which has the following beneficial effects: This inductance testing fixture, with its spiked design on the test board, can not only clamp the leads of the inductor components but also pierce the insulating varnish layer for testing, eliminating the need for an additional manual varnish stripping process and thus greatly improving testing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an inductance testing fixture proposed in this utility model; Figure 2 This is a cross-sectional view of an inductance testing fixture proposed in this utility model; Figure 3 This utility model proposes an inductance testing fixture. Figure 2 Enlarged view of section A; Figure 4 This is a schematic diagram of the structure of the test board of the inductance testing fixture proposed in this utility model. Figure 5 This utility model proposes an inductance testing fixture. Figure 4 Enlarged view of section B.

[0019] In the diagram: 1. Base; 101. Test seat; 2. Cylinder; 201. Push plate; 3. Sliding plate; 301. Test plate; 302. Test slot; 4. Cover plate; 5. Magnet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example: like Figures 1-5 An inductance testing fixture includes a test base 101 and a cylinder 2. The test base 101 is provided with a test slot 302. During testing, the lead wire of the inductor is inserted into the test slot 302.

[0023] A sliding plate 3 is symmetrically slidably connected inside the test base 101. The sliding plate 3 is in a horizontal state. A test plate 301 is fixedly connected to one end of each sliding plate 3. The test plate 301 is located inside the test groove 302. That is to say, the test plate 301 can only move inside the test groove 302.

[0024] Test board 301 is directly connected to the test circuit. After two test boards 301 are attached, the spikes pierce the insulating varnish layer, forming a closed loop and the circuit is connected.

[0025] The sides of the test plates 301 that are in contact with each other are provided with spikes. When the two test plates 301 are in contact, the spikes on the test plates 301 interlock and engage.

[0026] Cylinder 2 pushes sliding plate 3 to slide.

[0027] During testing, the lead wire of the inductor is inserted into the test slot 302. Then, the cylinder 2 drives the two sliding plates 3 to move closer to each other, causing the test plate 301 to move within the test slot 302 and move closer to each other. The lead wire of the inductor is then clamped and pierced through the insulating varnish layer by the spikes on the test plate 301, achieving electrical contact in the test circuit, making the circuit conductive, and performing the test.

[0028] The spike design on the test board 301 allows for the clamping of inductor leads while piercing the insulating varnish layer for testing, eliminating the need for manual stripping and thus greatly improving testing efficiency.

[0029] like Figure 5 The cone angle of the spike is 30-60°, which is the angle of 'a', preferably 35°.

[0030] The height of the spike is 0.3-1.5mm, which is the height of b, preferably 1mm.

[0031] This inductance testing fixture supports testing of polyesterimide / polyester enameled wires with a wire diameter of 0.1-3.0mm, ensuring that the insulation layer is pierced without damaging the copper wire, and connecting the test circuit to form a loop.

[0032] The test slot 302 has a two-set design, so the sliding plate 3 has a four-set design, symmetrical in pairs, with a test plate 301 fixedly connected to one end of each plate and located in the corresponding test slot 302, which can test two sets of inductor components at the same time, further improving the testing efficiency.

[0033] like Figures 1-2 The inductance testing fixture disclosed in this embodiment also includes a base 1, which serves as a support. The test circuit and the test instrument are both installed inside the base 1. The test circuit is also connected to the test instrument, which displays the test results.

[0034] The test stand 101 and the cylinder 2 are both fixedly connected to the base 1; the cylinder 2 is designed in two sets, located at both ends of the base 1, and pushes the sliding plates 3 on both sides respectively.

[0035] The end of the sliding plate 3 away from the test plate 301 extends into the test seat 101, which is convenient for the cylinder 2 to push.

[0036] Start cylinder 2, which pushes the sliding plate 3 to move. After the test is completed, return cylinder 2 to its original position.

[0037] A push plate 201 is fixedly connected to the output end of cylinder 2. Cylinder 2 pushes two sets of sliding plates 3 on the same side to move simultaneously through the push plate 201.

[0038] like Figure 2 and Figure 4 A magnet 5 is provided at the end of the sliding plate 3 away from the test plate 301; the push plate 201 is made of iron.

[0039] The sliding plate 3 is made of an insulating material, such as plastic.

[0040] When the cylinder 2 retracts, the magnetic attraction between the magnet 5 and the push plate 201 causes the sliding plate 3 to move together, thereby automatically separating the two sets of test plates 301 and removing the inductor.

[0041] When the test plate 301 is in contact with the side wall of the test slot 302, the test plate 301 stops moving. When the cylinder 2 continues to retract, the magnet 5 and the push plate 201 will automatically separate.

[0042] like Figure 1 and Figure 2 The test base 101 is detachably connected to a cover plate 4, which is fixedly connected to the test base 101 by screws; the sliding plate 3 is located between the cover plate 4 and the test base 101.

[0043] The cover plate 4 is removable, making it easy to install the sliding plate 3.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An inductance testing fixture, comprising a test base (101) and a cylinder (2), characterized in that, The test socket (101) is provided with a test slot (302); The test seat (101) is symmetrically slidably connected with sliding plates (3), and one end of each sliding plate (3) is fixedly connected with a test plate (301). The test plate (301) is located in the test slot (302). The test plates (301) are provided with spikes on the sides that are in contact with each other; The cylinder (2) pushes the sliding plate (3) to slide.

2. The inductance testing fixture according to claim 1, characterized in that, The cone angle of the spike is 30-60°.

3. The inductance testing fixture according to claim 2, characterized in that, The cone angle of the spike is 35°.

4. The inductance testing fixture according to claim 1, characterized in that, The height of the spike is 0.3-1.5 mm.

5. An inductance testing fixture according to claim 4, characterized in that, The height of the spike is 1 mm.

6. The inductance testing fixture according to claim 1, characterized in that, The test slot (302) is designed in two sets.

7. An inductance testing fixture according to claim 1 or 6, characterized in that, It also includes a base (1), and the test seat (101) and the cylinder (2) are both fixedly connected to the base (1); The cylinder (2) is designed symmetrically in two sets; The end of the sliding plate (3) away from the test plate (301) extends out to the test seat (101).

8. An inductance testing fixture according to claim 7, characterized in that, The output end of the cylinder (2) is fixedly connected to a push plate (201).

9. An inductance testing fixture according to claim 8, characterized in that, A magnet (5) is provided at the end of the sliding plate (3) away from the test plate (301); The push plate (201) is made of iron.

10. An inductance testing fixture according to claim 1, characterized in that, The test stand (101) is detachably connected to a cover plate (4) on its top. The sliding plate (3) is located between the cover plate (4) and the test seat (101).

Images