Electronic component testing tool

Abstract

This utility model discloses a testing fixture for electronic components, relating to the field of electrical testing technology. It includes a transparent insulating box, a discharger, a switching device, a positive terminal connector, and a negative terminal connector. The transparent insulating box can accommodate the electronic component under test. The discharger is placed inside the transparent insulating box, and the negative terminal of the discharger is connected to the negative terminal of the electronic component under test. The first end of the positive terminal connector extends into the transparent insulating box, and the second end of the positive terminal connector is connected to the positive terminal of the testing instrument. The first end of the negative terminal connector extends into the transparent insulating box, and the first end of the negative terminal connector is connected to the negative terminal of the discharger. The second end of the negative terminal connector is connected to the negative terminal of the testing instrument. The switching device is connected to the positive terminal of the electronic component under test, the first end of the positive terminal connector, and the positive terminal of the discharger. The switching device enables the positive terminal of the electronic component under test to be electrically connected to either the first end of the positive terminal connector or the positive terminal of the discharger. This utility model can effectively improve the safety of testing electronic components under test.

Description

Technical Field

[0001] This utility model relates to the field of power-on testing technology, and in particular to a testing fixture for electronic components. Background Technology

[0002] Electronic components such as filters must undergo high-voltage tests, including withstand voltage and insulation resistance tests, before leaving the factory. Currently, these tests typically involve directly connecting the test circuit, including the electronic component under test, to a high-voltage tester using probe clips. The connection points between the test circuit and the tester are exposed to the air, posing a risk of accidental contact and electric shock to the operator. Furthermore, electronic components such as filters often contain capacitors; after these tests, the capacitors retain charge, creating another risk of electric shock if the operator comes into contact with them. Utility Model Content

[0003] The purpose of this invention is to provide a testing fixture for electronic components to solve the problems existing in the prior art and effectively improve the safety of testing electronic components.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a testing fixture for electronic components, including a transparent insulating box, a discharger, a switching switch, a positive electrode connector, and a negative electrode connector. The transparent insulating box can accommodate the electronic component under test. The discharger is placed inside the transparent insulating box, and the negative electrode of the discharger is connected to the negative electrode of the electronic component under test. The first end of the positive electrode connector extends into the transparent insulating box, and the second end of the positive electrode connector is connected to the positive electrode of the testing instrument. The first end of the negative electrode connector extends into the transparent insulating box, and the first end of the negative electrode connector is connected to the negative electrode of the discharger. The second end of the negative electrode connector is connected to the negative electrode of the testing instrument. The switching switch is connected to the positive electrode of the electronic component under test, the first end of the positive electrode connector, and the positive electrode of the discharger. The switching switch enables the positive electrode of the electronic component under test to be electrically connected to either the first end of the positive electrode connector or the positive electrode of the discharger.

[0006] Preferably, the switching switch has a first terminal, a second terminal, and a third terminal. The first terminal is used to be fixedly connected to the positive electrode of the electronic component under test, the second terminal is fixedly connected to the positive electrode of the discharger, and the third terminal is fixedly connected to the first end of the positive electrode connector. The first terminal can be electrically connected to the second terminal or the third terminal.

[0007] Preferably, the switching switch includes a first terminal, a second terminal, a third terminal, a fourth terminal, and a switching post. The first end of the first terminal is the first terminal, the first end of the second terminal is the first terminal, the first end of the third terminal is the second terminal, and the first end of the fourth terminal is the third terminal. The first end of the switching post can contact the second end of the first terminal or the second end of the second terminal. When the first end of the switching post is in contact with the second end of the first terminal, the second end of the switching post is in contact with the second end of the third terminal. When the first end of the switching post is in contact with the second end of the second terminal, the second end of the switching post is in contact with the second end of the fourth terminal.

[0008] Preferably, the switch further includes a housing, a pressing rod, a pressing cover, and a compression spring. The first terminal, the second terminal, the third terminal, and the fourth terminal are all fixedly mounted on the housing. The first terminal and the third terminal are symmetrical about left and right, and the second terminal and the fourth terminal are also symmetrical about left and right. The second terminal is positioned below the first terminal. The first end of the switching post is positioned between the second ends of the first terminal and the second terminal. The second end of the switching post is positioned between the second ends of the third terminal and the second terminal. The bottom end of the pressing rod is fixedly connected to the middle of the switching post. The top end of the pressing rod is positioned outside the housing. The pressing cover is fixedly connected to the top end of the pressing rod. The compression spring is sleeved on the pressing rod. The top end of the compression spring is fixedly connected to the pressing cover, and the bottom end of the compression spring is fixedly connected to the top surface of the housing.

[0009] Preferably, the transparent insulating box includes a box body and a box cover. The box body has an operating opening that allows the interior of the box body to communicate with the exterior of the box body. The box cover can be fastened to the operating opening and seal the operating opening.

[0010] Preferably, the first end of the lid is hinged to the box body.

[0011] Preferably, the lid of the box is fixedly provided with a handle.

[0012] Preferably, a first magnet is fixedly provided on the box body, and a second magnet is fixedly provided on the second end of the box cover, and the first magnet and the second magnet can be attracted and fixed together.

[0013] Preferably, the outer shell is fixedly disposed within the housing, and the housing cover has a protrusion that can contact the pressing cover when the housing cover is fastened to the operating port, and press the pressing cover so that the first end of the switching post contacts the second end of the second terminal post, and the second end of the switching post contacts the second end of the fourth terminal post.

[0014] Preferably, the discharge device includes a first resistor, a second resistor, and an indicator light. The second resistor and the indicator light are connected in series, and the first resistor, the second resistor, and the indicator light are connected in parallel. The indicator light can light up when the positive terminal of the electronic component under test is electrically connected to the positive terminal of the discharge device.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] The electronic component testing fixture provided by this utility model uses a transparent insulating box to provide physical isolation, separating the electronic component under test from the outside world. By incorporating a discharge device and a switching switch, when the switching switch is operated to electrically connect the positive terminal of the electronic component under test to the first end of the positive terminal connector, high-voltage tests such as withstand voltage and insulation resistance can be easily performed. After the test is completed, operating the switching switch to electrically connect the positive terminal of the electronic component under test to the positive terminal of the discharge device releases the stored charge in the electronic component under test, thereby effectively improving the safety of the electronic component testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the electronic component testing fixture provided by this utility model;

[0019] Figure 2 for Figure 1 Internal schematic diagram of the electronic component testing fixture;

[0020] Figure 3 A circuit diagram of the electronic component testing fixture provided by this utility model;

[0021] Figure 4 A schematic diagram of a switching switch in the electronic component testing fixture provided by this utility model;

[0022] In the diagram: 1-Transparent insulating box, 2-Discharger, 3-Change switch, 4-Positive connector, 5-Negative connector, 6-Protrusion, 7-Electronic component under test, 8-First terminal, 9-Second terminal, 10-Third terminal, 11-First terminal, 12-Second terminal, 13-Third terminal, 14-Fourth terminal, 15-Change switch, 16-Outer shell, 17-Press lever, 18-Press cover, 19-Compression spring, 20-First resistor, 21-Second resistor, 22-Indicator light. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this invention is to provide a testing fixture for electronic components to solve the problems existing in the prior art and effectively improve the safety of testing electronic components.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 4 As shown, this utility model provides an electronic component testing fixture, including a transparent insulating box 1, a discharger 2, a switching switch 3, a positive electrode connector 4, and a negative electrode connector 5. The transparent insulating box 1 can accommodate the electronic component 7 to be tested. The discharger 2 is placed inside the transparent insulating box 1, and the negative electrode of the discharger 2 is connected to the negative electrode of the electronic component 7 to be tested. The first end of the positive electrode connector 4 extends into the transparent insulating box 1, and the second end of the positive electrode connector 4 is connected to the positive electrode of the tester. The first end of the negative electrode connector 5 extends into the transparent insulating box 1, and the first end of the negative electrode connector 5 is connected to the negative electrode of the discharger 2. The second end of the negative electrode connector 5 is connected to the negative electrode of the tester. The switching switch 3 is connected to the positive electrode of the electronic component 7 to be tested, the first end of the positive electrode connector 4, and the positive electrode of the discharger 2. The switching switch 3 can electrically connect the positive electrode of the electronic component 7 to the first end of the positive electrode connector 4 or the positive electrode of the discharger 2.

[0027] The electronic component testing fixture provided by this utility model is particularly suitable for high-voltage testing of filters. By setting up a transparent insulating box 1, it provides physical isolation, separating the electronic component 7 under test from the outside environment. By setting up a discharge device 2 and a switching switch 3, when the switching switch 3 is operated to electrically connect the positive terminal of the electronic component 7 to the first end of the positive terminal connector 4, high-voltage tests such as withstand voltage and insulation resistance of the electronic component 7 can be easily performed. After the test of the electronic component 7 is completed, the switching switch 3 is operated to connect the positive terminal of the electronic component 7 to the discharge device 2. The positive electrode connection can release the stored electricity in the electronic component 7 under test, thereby effectively improving the safety of the test of the electronic component 7 under test. It should be noted that the portions of the positive electrode connector 4 and the negative electrode connector 5 outside the transparent insulating box 1 are preferably provided with an insulating structure, such as being wrapped with insulating rubber, to minimize the risk of electric shock to personnel. The shape of the transparent insulating box 1 can be, but is not limited to, a cuboid, a sphere or other shapes. As a preferred embodiment of this invention, both the positive electrode connector 4 and the negative electrode connector 5 are banana plugs.

[0028] Furthermore, the switch 3 has a first terminal 8, a second terminal 9, and a third terminal 10. The first terminal 8 is used to be fixedly connected to the positive electrode of the electronic component 7 under test, the second terminal 9 is fixedly connected to the positive electrode of the discharger 2, and the third terminal 10 is fixedly connected to the first end of the positive electrode connector 4. The first terminal 8 can be electrically connected to the second terminal 9 or the third terminal 10. The structure is simple and easy to connect.

[0029] Furthermore, the switching switch 3 includes a first terminal 11, a second terminal 12, a third terminal 13, a fourth terminal 14, and a switching post 15. The first end of the first terminal 11 is the first terminal 8, the first end of the second terminal 12 is the first terminal 8, the first end of the third terminal 13 is the second terminal 9, and the first end of the fourth terminal 14 is the third terminal 10. The first end of the switching post 15 can contact the second end of the first terminal 11 or the second end of the second terminal 12. When the first end of the switching post 15 is in contact with the second end of the first terminal 11, the second end of the switching post 15 is in contact with the second end of the third terminal 13. When the first end of the switching post 15 is in contact with the second end of the second terminal 12, the second end of the switching post 15 is in contact with the second end of the fourth terminal 14. This facilitates wiring and allows for switching the connection between the positive terminal of the tested electronic component 7 and the first end of the positive terminal connector 4 or the positive terminal of the discharger 2.

[0030] Furthermore, the switch 3 also includes a housing 16, a pressing rod 17, a pressing cover 18, and a compression spring 19. The first terminal 11, the second terminal 12, the third terminal 13, and the fourth terminal 14 are all fixedly mounted on the housing 16. The first terminal 11 and the third terminal 13 are symmetrical about left and right, and the second terminal 12 and the fourth terminal 14 are symmetrical about left and right. The second terminal 12 is positioned below the first terminal 11. The first end of the switching post 15 is positioned between the second end of the first terminal 11 and the second end of the second terminal 12. The second end of the switching post 15 is positioned between the second end of the third terminal 13 and the second end of the fourth terminal 14. The bottom end of the pressing rod 17 is fixedly connected to the middle of the switching post 15. The top of the push rod 17 is placed outside the outer casing 16. The push cover 18 is fixedly connected to the top of the push rod 17. The compression spring 19 is sleeved on the push rod 17. The top of the compression spring 19 is fixedly connected to the push cover 18. The bottom of the compression spring 19 is fixedly connected to the top surface of the outer casing 16. When the push cover 18 is not pressed by external force, the elastic force of the compression spring 19 causes the first end of the switching post 15 to contact the second end of the first terminal post 11 and the second end of the switching post 15 to contact the second end of the third terminal post 13. When the push cover 18 is pressed by external force, the first end of the switching post 15 contacts the second end of the second terminal post 12 and the second end of the switching post 15 contacts the second end of the fourth terminal post 14, which facilitates operation.

[0031] Furthermore, the transparent insulating box 1 includes a box body and a box cover. The box body has an operating port that allows the interior of the box body to communicate with the exterior of the box body. The box cover can be fastened to the operating port and seal the operating port, which facilitates the placement and removal of the electronic component 7 under test through the operating port. It also facilitates wiring operations before testing and disassembly operations after testing. The box cover can ensure the sealing of the test space where the electronic component 7 under test is located, thereby improving test safety.

[0032] As a preferred embodiment of this invention, the first end of the lid is hinged to the box body, which is simple in structure and easy to use. It is preferred, but not limited to, using a hinge connection.

[0033] Furthermore, a handle is fixed on the lid to facilitate opening the lid.

[0034] Furthermore, a first magnet is fixedly installed on the box body, and a second magnet is fixedly installed on the second end of the box lid. The first magnet and the second magnet can attract and fix each other, making it easy to securely fix the box lid and the box body together.

[0035] Furthermore, the outer casing 16 is fixedly installed inside the box, and the box cover has a protrusion 6. The protrusion 6 can contact the pressing cover 18 when the box cover is fastened to the operating port, and press the pressing cover 18 to make the first end of the switching post 15 contact the second end of the second terminal post 12, and the second end of the switching post 15 contact the second end of the fourth terminal post 14. This enables automatic switching to the positive terminal of the tested electronic component 7 and the positive terminal of the discharger 2 under the elastic force of the compression spring 19 when the box cover is open, so as to complete the connection of the tested electronic component 7 with the positive terminal of the discharger 2. The release of stored electricity in component 7 enables automatic protection and discharge. Furthermore, when the cover is fastened to the operating port, the protrusion 6 presses against the pressing cover 18, automatically switching the electrical connection between the positive terminal of the electronic component under test 7 and the first end of the positive terminal connector 4, so as to complete high-voltage tests such as withstand voltage and insulation resistance of the electronic component under test 7. In addition, before the test, and before the cover is fastened to the operating port, since the electronic component under test 7 is not charged and is in a state where the positive terminal of the electronic component under test 7 is disconnected from the positive terminal of the tester, there will be no electric shock.

[0036] In a preferred embodiment of this invention, the discharger 2 includes a first resistor 20, a second resistor 21, and an indicator light 22. The second resistor 21 and the indicator light 22 are connected in series, while the first resistor 20, the second resistor 21, and the indicator light 22 are connected in parallel. The indicator light 22 illuminates when the positive terminal of the electronic component under test 7 is electrically connected to the positive terminal of the discharger 2. The indicator light 22 provides real-time indication of the discharge status; when the indicator light 22 is on, it indicates that current is flowing through it, and the electronic component under test 7 is in the discharge process. When the indicator light 22 is off, it indicates that the electronic component under test 7 has completed the discharge. The second resistor 21 serves a protective function. In practical use, the resistor selection is determined based on the commonly used capacitance value. The quarter-cycle time of the current (ms) / capacitance (uF) = resistance R (MΩ). A quarter-cycle of 50Hz is 5ms. For example, the capacitance of the step-down capacitor is 2.2uF, and the discharge resistor R = 5 / 2.2 = 2.27MΩ. In actual use, it can be slightly smaller than the calculated value. The power can be calculated based on the measured voltage, P = U2 / R. Usually, the power value of the resistor is ≥1W. A 500K to 1000K resistor is connected in parallel with the RC step-down circuit for protection (the second resistor 21 in this circuit). After the power is cut off, the first resistor 20, the second resistor 21 and the indicator light 22 discharge the charge in the capacitor. If there is no second resistor 21, the capacitor voltage will be superimposed under instantaneous switching and continuous repetition, causing circuit failure.

[0037] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electronic component testing tool, characterized by: The device includes a transparent insulating box, a discharger, a switch, a positive electrode connector, and a negative electrode connector. The transparent insulating box can accommodate the electronic component under test. The discharger is placed inside the transparent insulating box, and the negative electrode of the discharger is connected to the negative electrode of the electronic component under test. The first end of the positive electrode connector extends into the transparent insulating box, and the second end of the positive electrode connector is connected to the positive electrode of the tester. The first end of the negative electrode connector extends into the transparent insulating box, and the first end of the negative electrode connector is connected to the negative electrode of the discharger. The second end of the negative electrode connector is connected to the negative electrode of the tester. The switch is connected to the positive electrode of the electronic component under test, the first end of the positive electrode connector, and the positive electrode of the discharger. The switch enables the positive electrode of the electronic component under test to be electrically connected to either the first end of the positive electrode connector or the positive electrode of the discharger.

2. The electronic component testing tool of claim 1, wherein: The switching switch has a first terminal, a second terminal, and a third terminal. The first terminal is used to be fixedly connected to the positive electrode of the electronic component under test. The second terminal is fixedly connected to the positive electrode of the discharger. The third terminal is fixedly connected to the first end of the positive electrode connector. The first terminal can be electrically connected to the second terminal or the third terminal.

3. The electronic component testing tool of claim 2, wherein: The switching switch includes a first terminal, a second terminal, a third terminal, a fourth terminal, and a switching post. The first end of the first terminal is the first terminal, the first end of the second terminal is the first terminal, the first end of the third terminal is the second terminal, and the first end of the fourth terminal is the third terminal. The first end of the switching post can contact the second end of the first terminal or the second end of the second terminal. When the first end of the switching post is in contact with the second end of the first terminal, the second end of the switching post is in contact with the second end of the third terminal. When the first end of the switching post is in contact with the second end of the second terminal, the second end of the switching post is in contact with the second end of the fourth terminal.

4. The electronic component testing tooling of claim 3, wherein: The switch further includes a housing, a pressing rod, a pressing cover, and a compression spring. The first, second, third, and fourth terminals are all fixedly mounted on the housing. The first and third terminals are symmetrical about left and right, as are the second and fourth terminals. The second terminal is positioned below the first terminal. The first end of the switching post is positioned between the second ends of the first and second terminals, and the second end of the switching post is positioned between the second ends of the third and fourth terminals. The bottom end of the pressing rod is fixedly connected to the middle of the switching post, and the top end of the pressing rod is positioned outside the housing. The pressing cover is fixedly connected to the top end of the pressing rod. The compression spring is sleeved on the pressing rod, and the top end of the compression spring is fixedly connected to the pressing cover. The bottom end of the compression spring is fixedly connected to the top surface of the housing.

5. The electronic component testing tooling of claim 4, wherein: The transparent insulating box includes a box body and a box cover. The box body has an operating opening that allows the interior of the box body to communicate with the exterior of the box body. The box cover can be fastened to the operating opening and seal the operating opening.

6. The electronic component testing tooling of claim 5, wherein: The first end of the lid is hinged to the box body.

7. The electronic component testing tooling of claim 6, wherein: A handle is fixedly installed on the lid of the box.

8. The electronic component testing tooling of claim 7, wherein: A first magnet is fixedly installed on the box body, and a second magnet is fixedly installed on the second end of the box cover. The first magnet and the second magnet can be attracted and fixed together.

9. The electronic component testing tooling of claim 5, wherein: The outer casing is fixedly disposed within the box body. The box cover has a protrusion that can contact the pressing cover when the box cover is fastened to the operating port, and press the pressing cover so that the first end of the switching post contacts the second end of the second terminal post, and the second end of the switching post contacts the second end of the fourth terminal post.

10. The electronic component testing tooling of claim 1, wherein: The discharge device includes a first resistor, a second resistor, and an indicator light. The second resistor and the indicator light are connected in series, and the first resistor, the second resistor, and the indicator light are connected in parallel. The indicator light can light up when the positive terminal of the electronic component under test is electrically connected to the positive terminal of the discharge device.

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