An alloy resistance withstand voltage test fixture
By designing an alloy resistance withstand voltage test fixture, simultaneous testing of multiple resistors and power failure protection were achieved, solving the problems of low efficiency and safety hazards in existing technologies, and improving testing efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YEZHAN ELECTRONICS (HUIZHOU CITY) CO LTD
- Filing Date
- 2025-10-29
- Publication Date
- 2026-07-03
AI Technical Summary
The existing alloy resistor withstand voltage test process is inefficient and poses a risk of electric shock. Operational errors can easily lead to safety hazards.
Design an alloy resistor withstand voltage test fixture, including a test stage, a flip cover, a conductive block, a contact block, and a relay assembly. The flip cover can be rotated to test multiple resistors simultaneously, and a metal float and track structure are used to ensure that the power is off when the resistor is picked up or put down, so as to avoid electric shock.
This improves the efficiency of alloy resistance withstand voltage testing, enhances the safety of the testing process, and avoids the risk of electric shock caused by operator error.
Smart Images
Figure CN224456935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of alloy resistor production, and in particular to an alloy resistor withstand voltage testing fixture. Background Technology
[0002] The resistor manufacturing process requires encapsulation of the resistor body. On the one hand, this provides physical support and protection for the resistor body. On the other hand, the encapsulation layer is made of insulating materials such as epoxy resin, silicone, and ceramics to form an insulating layer on the surface of the resistor body. This increases the withstand voltage between the pins and between the pins and the external environment, preventing electric shock during use and reducing the risk of short circuits and fires.
[0003] The withstand voltage test of resistors is mainly performed on a withstand voltage tester. The tester is equipped with clamps and contacts. After clamping the leads of the resistor under test with the clamps, the power is applied and the contacts are brought into contact with the outer wall of the resistor. The current is detected by the withstand voltage tester to determine whether the product has broken down and thus to determine the packaging effect.
[0004] However, the withstand voltage test is performed on a single resistor at a time, requiring frequent clamping and unclamping of the resistor, resulting in low testing efficiency. Furthermore, the high test voltage poses a risk of electric shock if the operator makes a mistake. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an alloy resistance withstand voltage test fixture that improves the efficiency of alloy resistance withstand voltage testing while enhancing the safety of the testing process and preventing electric shock caused by operator error.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] An alloy resistance withstand voltage test fixture includes: a test stage, a flip cover and conductive block, a contact block and a relay assembly;
[0008] The testing platform has multiple positioning slots for accommodating the resistor to be tested. The contact block is located inside the testing platform and passes through each of the positioning slots. The contact block is used to contact the outer casing of the resistor to be tested.
[0009] The flip cover is rotatably mounted on the testing platform, the conductive block is mounted on the flip cover, and the conductive block has a protrusion for contacting the pin of the resistor to be tested.
[0010] The relay assembly includes a metal float and a limiting frame. The limiting frame is disposed on the flip cover and has a track. One end of the track is inclined toward the location of the conductive block. The metal float includes a central shaft and a disk. The central shaft passes through the track, and the disk is located in the gap between the limiting frame and the flip cover.
[0011] When the flip cover unfolds, the track guides the metal float away from the conductive block;
[0012] When the flip cover is closed, the track guides the metal float close to the conductive block.
[0013] In one embodiment, the limiting frame is provided with an insulating jacket and a metal insert, the track is located on the metal insert, the insulating jacket is wrapped around the outer wall of the metal insert, and the insulating jacket is used to separate the metal insert and the conductive block.
[0014] In one embodiment, the metal insert is provided with a grounding ring.
[0015] In one embodiment, the conductive block has a docking groove for receiving the disk.
[0016] In one embodiment, the flip cover has a mounting groove that matches the limiting frame.
[0017] In one embodiment, the flap has a handle on its edge.
[0018] In one embodiment, the end of the contact block is provided with an electrical terminal.
[0019] In one embodiment, the portion of the contact block located within the positioning groove is provided with a contoured part.
[0020] In one embodiment, the depth of the positioning groove is less than the thickness of the resistor to be tested.
[0021] In one embodiment, a gap is provided between the limiting frame and the flip cover, the gap being greater than the thickness of the disk.
[0022] The aforementioned alloy resistance withstand voltage test fixture can improve the efficiency of alloy resistance withstand voltage testing while enhancing the safety of the testing process and preventing electric shock caused by operator error. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of the alloy resistance withstand voltage test fixture;
[0025] Figure 2 This is a schematic diagram showing the interaction between the resistor to be tested and the test bench;
[0026] Figure 3 This is a schematic diagram showing the disassembly of the relay assembly;
[0027] Figure 4 This is a diagram showing the interaction between the metal float and the conductive block when the flip cover is unfolded.
[0028] Figure 5 This is a diagram showing the interaction between the metal float and the conductive block when the flip cover is closed.
[0029] Reference numerals: 10, Alloy resistance withstand voltage test fixture; 20, Resistor to be tested; 21, Housing; 22, Pin; 100, Test stage; 110, Positioning groove; 200, Flip cover; 210, Mounting groove; 220, Handrail; 300, Conductive block; 310, Protrusion; 320, Connecting groove; 400, Contact block; 410, Electrical terminal; 500, Relay assembly; 510, Metal float; 511, Central shaft; 512, Disc; 520, Limiting frame; 521, Track; 522, Insulating jacket; 523, Metal insert; 524, Electrical ring. Detailed Implementation
[0030] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0033] Please see Figure 1 and Figure 2This utility model provides an alloy resistor withstand voltage test fixture 10 for conducting withstand voltage tests on alloy resistors. It includes: a test stage 100, a flip cover 200, a conductive block 300, a contact block 400, and a relay assembly 500.
[0034] Please see Figure 1 and Figure 2 The testing platform 100 has multiple positioning slots 110 for accommodating resistors under test. Each positioning slot 110 can accommodate one resistor 20 under test. A contact block 400 is disposed inside the testing platform 100 and passes through each positioning slot 110. The end of the contact block 400 is provided with a power terminal 410. The contact block 400 is used to contact the outer shell 21 of the resistor 20 under test. After the resistor 20 under test is placed in the positioning slot 110, the leads 22 are exposed outside the positioning slot 110.
[0035] Please see Figure 1 and Figure 2 The flip cover 200 is rotatably mounted on the testing platform 100, and the conductive block 300 is mounted on the flip cover 200. Preferably, the edge of the flip cover 200 is provided with a handrail 220.
[0036] Please see Figure 1 and Figure 2 The conductive block 300 has a protrusion 310 for contacting the pin of the resistor under test; the flip cover 200 can be closed by flipping it, so that the conductive block 300 is pressed on the pin 22 of the resistor under test 20; the flip cover 200 can be opened by rotating it in the opposite direction, so as to remove the resistor under test 20 in the positioning groove 110.
[0037] Please see Figure 3 and Figure 4 The relay assembly 500 includes a metal float 510 and a limiting frame 520. The limiting frame 520 is disposed on the flip cover 200 and a track 521 is provided on the limiting frame 520. One end of the track 521 is inclined toward the position of the conductive block 300. The metal float 510 includes a central shaft 511 and a disk 512. The central shaft 511 passes through the track 521, and the disk 512 is located in the gap between the limiting frame 520 and the flip cover 200.
[0038] Please see Figure 4 When the flip cover 200 is unfolded, the track 521 guides the metal float 510 away from the conductive block 300;
[0039] Please see Figure 5 When the flip cover 200 is closed, the track 521 guides the metal float 510 close to the conductive block 300.
[0040] Among them, the detection platform 100 and the flip cover 200 are insulating components, while the conductive block 300, the contact block 400, the metal float 510 and the limiting frame 520 are conductive components.
[0041] The working principle of the alloy resistance withstand voltage test fixture 10 is as follows:
[0042] Before use, connect the limit frame 520 and the contact block 400 to the withstand voltage tester. Specifically, the limit frame 520 connects to the current output interface of the withstand voltage tester, and the contact block 400 connects to the input interface of the withstand voltage tester.
[0043] Please see Figure 4 After flipping the cover 200 to its unfolded state, place the resistors 20 to be tested one by one into the positioning slots 110, and ensure that the pins 22 on the resistors 20 are facing the same direction, so that the outer shell 21 of the resistors 20 to be tested contacts the contact block 400; at this time, the cover 200 moves away from the test stage 100, and the metal float 510 slides down the track 521 away from the conductive block 300 under the action of gravity, and the disc 512 separates from the conductive block 300. At this time, the conductive block 300 is not connected to electricity, which can prevent the operator from getting electric shock when clamping the resistors 20 to be tested.
[0044] Please see Figure 5 Rotate the flip cover 200 to place it on the testing platform 100. At this time, the protrusion 310 on the conductive block 300 contacts the pin 22 of the resistor under test 20. Simultaneously, the metal float 510 slides down the track 521 under gravity, near one end of the conductive block 300. The disc 512 contacts the conductive block 300, and the conductive block 300 aligns with the limiting frame 520. At this time, the conductive block 300 is energized, and the resistor under test 20 is connected to the test circuit. Start the withstand voltage tester, and output the rated voltage to the resistor under test 20 through the conductive block 300. The current value detected on the withstand voltage tester determines whether the resistor under test 20 has broken down. Specifically, if the displayed current value suddenly increases, it means that the resistor under test 20 has broken down and has a leakage problem, and the test fails; otherwise, if no breakdown occurs during the test, the test passes.
[0045] It is important to emphasize that one end of the track 521 is tilted towards the location of the conductive block 300. When the flip cover 200 is placed on the test platform 100, the metal float 510 rolls along the track 521 under the action of gravity until the disk 512 contacts the conductive block 300. The metal float 510 connects the conductive block 300 and the limiting frame 520. When clamping the resistor to be tested 20, the flip cover 200 needs to be flipped to move it away from the test platform 100. At this time, gravity guides the metal float 510 to roll to the other end of the track 521, separating the disk 512 from the conductive block 300, thereby disconnecting the electrical connection between the conductive block 300 and the limiting frame 520. The flipping action of the flip cover 200, in conjunction with the metal float 510, ensures that the conductive block 300 is de-energized during the handling of the resistor to be tested. Even if the operator comes into contact with the conductive block 300, there will be no electric shock problem, thus improving the safety of the withstand voltage test.
[0046] The above-mentioned alloy resistance withstand voltage test fixture 10 has the following beneficial effects:
[0047] 1. The testing station 100 is equipped with multiple positioning slots 110, which can clamp multiple resistors 20 to be tested at one time and perform withstand voltage tests on multiple resistors at the same time, which helps to improve the efficiency of withstand voltage testing.
[0048] 2. One end of the track 521 is tilted towards the location of the conductive block 300. The action of rotating the flip cover 200, in conjunction with the track 521, drives the metal float 510 to slide. When the flip cover 200 is closed, the conductive block 300 is electrically connected to the limiting frame 520 through the metal float 510. When the flip cover 200 is unfolded, the metal float 510 is separated from the conductive block 300, and the electrical connection of the conductive block 300 is released. Power on / off can be achieved without the need for a separate switch, saving the operator the operation of turning the power on and off. It can also avoid the problem of electric shock caused by the operator forgetting to turn off the power and clamping the resistor, thus improving the safety of the withstand voltage test process.
[0049] Please see Figure 3 In one embodiment, the limiting frame 520 is provided with an insulating jacket 522 and a metal insert 523. The track 521 is located on the metal insert 523. The insulating jacket 522 is wrapped around the outer wall of the metal insert 523. The insulating jacket 522 is used to separate the metal insert 523 and the conductive block 300 to prevent the metal insert 523 from directly contacting the conductive block 300 and causing the metal float 510 to fail.
[0050] Please see Figure 3 In one embodiment, the metal insert 523 is provided with a grounding ring 524, which is electrically connected to the withstand voltage tester.
[0051] Please see Figure 3 In one embodiment, the conductive block 300 is provided with a docking groove 320, which is used to accommodate the disk 512, thereby increasing the contact area between the conductive block 300 and the disk 512 and ensuring that no disconnection occurs during the test.
[0052] Please see Figure 3 In one embodiment, the flip cover 200 has an installation groove 210 that matches the limiting frame 520. The limiting frame 520 is inserted into the installation groove 210 by plugging, so that the limiting frame 520 can be disassembled during maintenance.
[0053] In one embodiment, the contact block 400 has a contoured part located in the positioning groove 110, and the contoured part has the same shape as the outer shell 21 of the resistor to be tested 20.
[0054] In one embodiment, a gap is provided between the limiting frame 520 and the flip cover 200, the gap being greater than the thickness of the disk 512. This ensures that the metal float 510 can roll smoothly when the flip cover 200 is flipped.
[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An alloy resistance voltage withstanding test fixture, characterized in that, include: Testing platform, flip cover and conductive block, contact block and relay assembly; The testing platform has multiple positioning slots for accommodating the resistor to be tested. The contact block is located inside the testing platform and passes through each of the positioning slots. The contact block is used to contact the outer casing of the resistor to be tested. The flip cover is rotatably mounted on the testing platform, the conductive block is mounted on the flip cover, and the conductive block has a protrusion for contacting the pin of the resistor to be tested. The relay assembly includes a metal float and a limiting frame. The limiting frame is disposed on the flip cover and has a track. One end of the track is inclined toward the location of the conductive block. The metal float includes a central shaft and a disk. The central shaft passes through the track, and the disk is located in the gap between the limiting frame and the flip cover. When the flip cover unfolds, the track guides the metal float away from the conductive block; When the flip cover is closed, the track guides the metal float close to the conductive block.
2. The alloy resistance voltage testing fixture of claim 1, wherein, The limiting frame is provided with an insulating jacket and a metal insert. The track is located on the metal insert. The insulating jacket is wrapped around the outer wall of the metal insert and is used to separate the metal insert and the conductive block.
3. The alloy resistance voltage testing fixture of claim 2, wherein, The metal insert is provided with a grounding ring.
4. The alloy resistance voltage testing fixture of claim 1, wherein, The conductive block has a docking groove for receiving the disk.
5. The alloy resistance voltage testing fixture of claim 1, wherein, The flip cover has a mounting groove that matches the limiting frame.
6. The alloy resistance voltage testing fixture of claim 1, wherein, The flap has a handle on its edge.
7. The alloy resistance voltage testing fixture of claim 1, wherein, The contact block has an electrical terminal at its end.
8. The alloy resistance voltage testing fixture of claim 1, wherein, The contact block has a contoured part located in the positioning groove.
9. The alloy resistance voltage testing fixture of claim 1, wherein, The depth of the positioning groove is less than the thickness of the resistor to be tested.
10. The alloy resistance withstand voltage testing fixture according to claim 1, characterized in that, There is a gap between the limiting frame and the flip cover, and the gap is greater than the thickness of the disc.