Diode electrical performance test tool

Abstract

The utility model discloses a diode electrical performance testing tool, which relates to the technical field of diode testing and is technically characterized by comprising a base, a guide rail arranged at the top of the base, anti-falling plates symmetrically mounted on the inner side of the guide rail, a sliding block slidably connected to the top of the guide rail, and a lead placing table arranged at the top of the sliding block. A portal frame is fixedly installed at the top of the lead placing table, an air bag is fixedly installed at the bottom of the portal frame, an inflation pipe is fixedly installed on the side face of the air bag, and the air inlet end of the inflation pipe is in threaded connection with a sealing cover. According to the utility model, through the design of slide block adjustment, air bag compression, pressure sensor monitoring, flexible conductive pressing sheets and the like, the problems of insufficient contact area, improper contact force, poor contact and the like in a traditional diode electrical performance test tool are effectively solved, the test accuracy and stability are improved, and the test efficiency is improved. And powerful support is provided for quality control and performance evaluation of the diode.

Description

Technical Field

[0001] This utility model relates to the field of diode testing, specifically a diode electrical performance testing fixture. Background Technology

[0002] As an indispensable component in the electronics field, diodes, with their unique unidirectional conductivity, allow current to flow in only one direction and block it in the reverse direction. This characteristic makes them play a crucial role in various electronic circuits. Based on technological advancements and evolving market demands, crystal diodes, due to their superior performance and lower manufacturing costs, have gradually replaced electronic diodes and become the mainstream product in the market.

[0003] For crystal diodes, the importance of the packaging process is self-evident, as the quality of the packaging directly affects the diode's performance and lifespan. In this process, the reliability of the contact between the diode leads and the test socket, as well as the control of the contact force, are two core elements that directly impact the accuracy and stability of the test.

[0004] However, traditional diode electrical performance testing fixtures have some design shortcomings. Specifically, these fixtures often cannot effectively control the contact area and contact force between the diode leads and the test socket. Insufficient contact area or improper contact force (too large or too small) can lead to poor contact. Such poor contact not only reduces the accuracy of the test but may also damage the diode, thus affecting its subsequent performance. Therefore, we propose a novel diode electrical performance testing fixture. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a diode electrical performance testing fixture that solves the problem that traditional diode electrical performance testing fixtures cannot effectively control the contact area and contact force between the diode leads and the test socket, thus affecting their subsequent use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a diode electrical performance testing fixture, comprising a base, a guide rail on the top of the base, anti-detachment plates symmetrically installed on the inner side of the guide rail, a slider slidably connected to the top of the guide rail, a lead wire placement platform on the top of the slider, a gantry frame fixedly installed on the top of the lead wire placement platform, an airbag fixedly installed at the bottom of the gantry frame, an inflation tube fixedly installed on the side of the airbag, a sealing cap threadedly connected to the air inlet end of the inflation tube, pressure sensors fixedly installed at the four corners of the bottom of the airbag, a pressure plate fixedly installed at the bottom of the pressure sensor, and a voltage-conducting sheet fixedly installed at the bottom of the pressure plate.

[0009] Preferably, the airbag is located directly above the lead placement platform, and the vertical height of the airbag after inflation is greater than the vertical distance between the gantry and the lead placement platform, so as to ensure that the airbag can be completely pressed onto the diode lead.

[0010] Preferably, a plurality of anti-slip protrusions are fixedly installed on the outer side of the sealing cover, wherein the plurality of anti-slip protrusions are uniformly distributed in a circumferential shape on the outer circular surface of the sealing cover.

[0011] Preferably, the number of pressure sensors is four, and these four pressure sensors are located at the four corners of the bottom of the airbag, respectively, for monitoring the pressure generated by the airbag on the diode leads.

[0012] Preferably, the conductive sheet has wire holes inside, and the conductive sheet is made of flexible conductive fibers interwoven together.

[0013] Preferably, the anti-detachment plate is fixedly connected to the guide rail, and its height is equal to the height of the guide rail, in order to prevent the slider from falling off the guide rail during the sliding process.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0016] 1. This invention achieves precise control of the pressure applied to the diode leads by incorporating an airbag and its inflation system. After inflation, the airbag completely presses against the diode leads, ensuring reliable contact. Simultaneously, by controlling the inflation amount of the airbag, the pressure applied to the diode leads can be precisely adjusted, preventing damage to the diode due to improper contact and improving testing accuracy.

[0017] 2. This invention, by incorporating a pressure sensor and a pressure plate, can monitor the pressure exerted by the airbag on the diode leads in real time and stop inflation when the pressure reaches a preset value. This design not only ensures appropriate contact force between the diode leads and the test socket but also improves test stability and avoids test errors caused by improper contact force.

[0018] 3. This invention, by incorporating a sliding slider and lead placement platform, allows for flexible adjustment of the spacing between the left and right lead placement platforms to accommodate diodes of different sizes. This design not only improves testing flexibility but also enhances the versatility of the fixture, making it suitable for a wider range of diode testing needs.

[0019] 4. This invention further improves the connection reliability between the diode leads and the test circuit by incorporating a voltage-conducting sheet woven from flexible conductive fibers. The voltage-conducting sheet has good conductivity and flexibility, enabling it to make close contact with the diode leads, thus ensuring the reliability and stability of the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the planar structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the pressure sensor structure of this utility model.

[0024] In the picture:

[0025] 1. Base; 2. Guide rail; 3. Anti-detachment plate; 4. Slider; 5. Lead wire placement platform; 6. Gantry frame; 7. Airbag; 8. Inflation tube; 9. Sealing cover; 10. Pressure sensor; 11. Pressure plate; 12. Conductive voltage sheet. Detailed Implementation

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] This utility model provides a technical solution:

[0028] Please see Figures 1-4A diode electrical performance testing fixture includes a base 1, a guide rail 2 on the top of the base 1, anti-detachment plates 3 symmetrically installed on the inner side of the guide rail 2, a slider 4 slidably connected to the top of the guide rail 2, a lead wire placement platform 5 on the top of the slider 4, a gantry frame 6 fixedly installed on the top of the lead wire placement platform 5, an airbag 7 fixedly installed at the bottom of the gantry frame 6, an inflation tube 8 fixedly installed on the side of the airbag 7, a sealing cap 9 threadedly connected to the air inlet end of the inflation tube 8, pressure sensors 10 fixedly installed at the four corners of the bottom of the airbag 7, a pressure plate 11 fixedly installed at the bottom of the pressure sensor 10, and a voltage conductive sheet 12 fixedly installed at the bottom of the pressure plate 11.

[0029] Furthermore, the airbag 7 is located directly above the lead placement platform 5, and the vertical height of the airbag 7 after inflation is greater than the vertical distance between the gantry 6 and the lead placement platform 5, to ensure that the airbag 7 can be completely pressed onto the diode lead. By ensuring that the airbag 7 is located directly above the lead placement platform 5 and its height after inflation is greater than the distance between the gantry 6 and the lead placement platform 5, the airbag 7 can be completely pressed onto the diode lead. This design effectively solves the problem of poor contact between the diode lead and the test socket in traditional tooling.

[0030] Furthermore, several anti-slip protrusions are fixedly installed on the outer side of the sealing cover 9. These anti-slip protrusions are evenly distributed in a circumferential shape on the outer surface of the sealing cover 9. The anti-slip protrusion design on the outer side of the sealing cover 9 increases the friction between the hand and the sealing cover, making it easier for the user to tighten or loosen the sealing cover 9, ensuring the sealing of the inflation tube 8, and thus ensuring the stable air pressure of the airbag 7 during the test.

[0031] Furthermore, there are four pressure sensors 10, which are located at the four corners of the bottom of the airbag 7. They are used to monitor the pressure exerted by the airbag 7 on the diode leads. By setting the pressure sensors 10 at the four corners of the bottom of the airbag 7, the pressure exerted by the airbag 7 on the diode leads can be monitored and fed back in real time, ensuring that the pressure is appropriate, avoiding damage to the diode, and improving the accuracy and stability of the test.

[0032] Furthermore, the conductive sheet 12 has wire holes inside. The conductive sheet 12 is made of flexible conductive fibers interwoven together. The wire holes inside the conductive sheet 12 facilitate the passage of external wires, making testing easier. Moreover, its flexible conductive fiber weaving structure ensures good conductivity and adaptability to contact with leads, enhancing the reliability and stability of the test.

[0033] Furthermore, the anti-detachment plate 3 is fixedly connected to the guide rail 2, and its height is equal to that of the guide rail 2. This is used to prevent the slider 4 from falling off the guide rail 2 during the sliding process. By ensuring that the anti-detachment plate 3 is at the same height as the guide rail 2 and is fixedly connected, the slider 4 is effectively prevented from slipping off when adjusting the spacing, which enhances the safety and stability of the fixture and ensures the smooth progress of the testing process.

[0034] In practical use, the working principle of this utility model is as follows:

[0035] First, by adjusting the position of the sliding slider 4 on the guide rail 2, the spacing between the left and right lead placement platforms 5 is adjusted to accommodate diodes of different sizes. This design solves the problem that traditional test fixtures cannot accommodate diodes of different sizes, improving the flexibility and versatility of testing.

[0036] After adjusting the distance, place the leads of the diode to be tested on the lead placement platform 5, ensuring that the diode leads are directly below the airbag 7. This step ensures the accurate placement of the diode leads, laying the foundation for subsequent testing.

[0037] Next, air is inflated into the airbag 7 through the inflation tube 8. During inflation, because the airbag 7 is located directly above the lead placement platform 5, and its inflated vertical height is greater than the vertical distance between the gantry 6 and the lead placement platform 5, the airbag 7 gradually inflates and presses downwards against the diode lead. This design ensures that the airbag 7 can be completely pressed against the diode lead, effectively solving the problem of poor contact between the diode lead and the test socket in traditional test fixtures. At the same time, by controlling the inflation amount of the airbag 7, precise control of the pressure on the diode lead can be achieved, avoiding damage to the diode caused by improper contact force.

[0038] During the process of the airbag 7 compressing the diode leads, pressure sensors 10 fixedly installed at the four corners of the bottom of the airbag 7 can monitor the pressure exerted by the airbag 7 on the diode leads in real time. When the pressure reaches the preset value, inflation can be stopped to ensure that the contact force between the diode leads and the test socket is moderate, neither too strong nor too weak. This design improves the accuracy and stability of the test and avoids test errors caused by improper contact force.

[0039] The pressure plate 11 and the voltage-conducting sheet 12 are located at the bottom of the airbag 7. When the airbag 7 presses against the diode leads, the voltage-conducting sheet 12 makes close contact with the diode leads. Because the voltage-conducting sheet 12 is made of interwoven flexible conductive fibers, it has good conductivity and flexibility. This design not only ensures a reliable connection between the diode leads and the test circuit but also improves the reliability and stability of the test.

[0040] In summary, this invention, through the use of slider 4 for adjustment, airbag 7 for compression, pressure sensor 10 for monitoring, and flexible conductive sheet 12, effectively solves the problems of insufficient contact area, improper contact force, and poor contact in traditional diode electrical performance testing fixtures. These designs improve the accuracy and stability of the test, providing strong support for diode quality control and performance evaluation.

[0041] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A diode electrical performance testing fixture, comprising a base (1), characterized in that: The base (1) is provided with a guide rail (2) on the top. Anti-detachment plates (3) are symmetrically installed on the inner side of the guide rail (2). A slider (4) is slidably connected to the top of the guide rail (2). A lead wire placement platform (5) is provided on the top of the slider (4). A gantry frame (6) is fixedly installed on the top of the lead wire placement platform (5). An airbag (7) is fixedly installed at the bottom of the gantry frame (6). An inflation tube (8) is fixedly installed on the side of the airbag (7). A sealing cap (9) is threadedly connected to the air inlet end of the inflation tube (8). Pressure sensors (10) are fixedly installed at the four corners of the bottom of the airbag (7). A pressure plate (11) is fixedly installed at the bottom of the pressure sensor (10). A voltage conductive sheet (12) is fixedly installed at the bottom of the pressure plate (11).

2. The diode electrical performance testing fixture according to claim 1, characterized in that: The airbag (7) is located directly above the lead placement platform (5), and the vertical height of the airbag (7) after inflation is greater than the vertical distance between the gantry (6) and the lead placement platform (5) to ensure that the airbag (7) can be fully pressed onto the diode lead.

3. The diode electrical performance testing fixture according to claim 1, characterized in that: Several anti-slip protrusions are fixedly installed on the outer side of the sealing cover (9), and the anti-slip protrusions are evenly distributed in a circumferential shape on the outer circular surface of the sealing cover (9).

4. The diode electrical performance testing fixture according to claim 1, characterized in that: The number of pressure sensors (10) is four, and these four pressure sensors (10) are located at the four corners of the bottom of the airbag (7) to monitor the pressure generated by the airbag (7) on the diode leads.

5. The diode electrical performance testing fixture according to claim 1, characterized in that: The conductive sheet (12) has wire holes inside, and the conductive sheet (12) is made of flexible conductive fibers interwoven together.

6. The diode electrical performance testing fixture according to claim 1, characterized in that: The anti-detachment plate (3) is fixedly connected to the guide rail (2), and its height is equal to the height of the guide rail (2), which is used to prevent the slider (4) from falling off the guide rail (2) during the sliding process.

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