Switching power supply test fixture

Abstract

The utility model relates to switch power supply test equipment technical field discloses a switch power supply test fixture, including base, the upside fixed coupling of base has the fixed plate, the side fixed coupling of base away from fixed plate has a plurality of slide rods, a plurality of slide rods have the load -bearing plate common sliding connection, the upper end of a plurality of slide rods is fixedly connected with the side fixed connection of fixed plate, the side fixed connection of load -bearing plate away from fixed plate has the slide platform, the slide platform has a plurality of sliding blocks of sliding connection, the side fixed connection of each sliding block away from fixed plate respectively has the metal probe, the utility model discloses through the position of locating nut, control sliding block on the slide platform, by this reach the adjustment test fixture each metal probe and the adaptation relation of different kinds switch power supply binding post, can improve the practicality of test fixture significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of switching power supply testing equipment, and in particular to a switching power supply testing fixture. Background Technology

[0002] A switching power supply is a power device that converts AC to DC power. It switches the input voltage into a pulse signal at a high frequency through the switching action of a switching transistor, and then converts it into a DC voltage output through a rectifier and filter circuit. To verify whether a switching power supply meets electrical safety standards, it is necessary to use test fixtures to perform insulation performance tests and high voltage withstand tests. However, due to the variety of switching power supplies, the distance between the terminals for external power supply is not exactly the same for each type of switching power supply, and existing switching power supply test fixtures generally have the problem that the metal probes cannot be flexibly adjusted.

[0003] For example, a test fixture for switching power supplies is disclosed in Chinese utility model patent with announcement number CN215494029U. Although the solution achieves the function of improving test efficiency through reasonable structural design, the test probes on the workbench are installed in relatively fixed positions. When encountering different types of switching power supplies with inconsistent distances between their external output terminals, the test probes of the test fixture may not be able to be adjusted according to the position of each terminal.

[0004] In view of this, a switching power supply test fixture that can solve the above problems is proposed. Utility Model Content

[0005] To address the technical problem of inconvenient probe position adjustment in switching power supply test fixtures, this utility model provides a switching power supply test fixture.

[0006] This utility model is achieved using the following technical solution: a switching power supply testing fixture, comprising a base, a fixed plate fixedly connected to the upper side of the base, a plurality of sliding rods fixedly connected to the side of the base away from the fixed plate, a load-bearing plate slidably connected to the plurality of sliding rods, the upper ends of the plurality of sliding rods fixedly connected to one side of the fixed plate, a slide table fixedly connected to the side of the load-bearing plate away from the fixed plate, a plurality of sliders slidably connected to the slide table, a metal probe fixedly connected to the side of each slider away from the fixed plate, a positioning mechanism provided on the upper side of each slider, a probe lifting and lowering mechanism for moving the metal probe up and down provided on the upper side of the fixed plate, and a power supply feeding mechanism provided on the upper side of the base.

[0007] As a further improvement to the above solution, the positioning mechanism includes a positioning nut threaded onto the upper side of each slider, the lower end of which abuts against the upper side of the slider.

[0008] As a further improvement to the above solution, the probe lifting and lowering mechanism includes a support fixedly connected to the side of the fixed plate near the load-bearing plate, a sliding sleeve fixedly connected to the lower side of the support, a punch slidably connected to the inner side of the sliding sleeve, the lower end of the punch being fixedly connected to the upper end of the load-bearing plate, and a punch driving mechanism being provided on the upper side of the support.

[0009] As a further improvement to the above solution, the punch drive mechanism includes a right-angle push handle rotatably connected to the upper side of the support, and a connecting plate rotatably connected to the upper end of the punch. The upper end of the connecting plate is rotatably connected to the right-angle inflection point of the right-angle push handle.

[0010] As a further improvement to the above solution, the power supply feeding mechanism includes multiple slide rails fixedly connected to the upper side of the base. A positioning plate is slidably connected to the upper side of the multiple slide rails. A groove is provided on the positioning plate for placing the switching power supply. A positioning plate driving mechanism is provided on the lower side of the positioning plate to move the positioning plate back and forth along the slide rails.

[0011] As a further improvement to the above solution, the positioning plate driving mechanism includes a toothed plate fixedly connected to the lower side of the positioning plate, a gear rotatably connected to the upper side of the base, a spiral sleeve opened inside the gear, the lower side of the spiral sleeve communicating with the interior of the base, the gear meshing with the toothed plate, and a threaded column meshing with the spiral sleeve inside the gear, the upper end of the threaded column being fixedly connected to the lower side of the load-bearing plate.

[0012] As a further improvement to the above solution, a switch button is installed on the upper side of the base, and a circuit board is installed on the inner side of the base, with the circuit board electrically connected to the switch button.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model controls the position of the slider on the slide table by using a positioning nut, thereby adjusting the compatibility between each metal probe of the test fixture and the terminals of different types of switching power supplies, which can significantly improve the practicality of the test fixture.

[0015] 2. This utility model uses the descending of the threaded column to drive the gear to rotate, which in turn moves the toothed plate to one side, thereby moving the switching power supply on the positioning plate below the metal probe. The operator can load the switching power supply to be tested onto the positioning plate from the outside of the base, realizing automatic feeding. It is convenient to operate, simple to use, and can significantly improve testing efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a switching power supply test fixture provided by this utility model;

[0017] Figure 2 for Figure 1 Top view;

[0018] Figure 3 for Figure 1 Side view.

[0019] Explanation of key symbols:

[0020] 1. Base; 2. Load-bearing plate; 3. Fixing plate; 4. Slide table; 5. Slide rod; 6. Slide sleeve; 7. Connecting plate; 8. Support; 9. Right-angle push handle; 10. Punch rod; 11. Metal probe; 12. Positioning plate; 13. Slide rail; 14. Gear plate; 15. Gear; 16. Threaded post; 17. Positioning nut; 18. Slider; 19. Switch button. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Example:

[0023] Please combine Figures 1-3 A switching power supply test fixture according to this embodiment includes a base 1, and a fixing plate 3 is fixedly connected to the upper side of the base 1.

[0024] In this embodiment, two sliding rods 5 are fixedly connected to the side of the base 1 away from the fixed plate 3. A load-bearing plate 2 is slidably connected to the two sliding rods 5. The upper ends of the two sliding rods 5 are fixedly connected to one side of the fixed plate 3. A slide table 4 is fixedly connected to the side of the load-bearing plate 2 away from the fixed plate 3. In this embodiment, the slide table 4 is a T-shaped slide table.

[0025] Please combine Figure 1 As shown, two sliders 18 are slidably connected on the slide table 4. It should be noted that, generally, when testing a switching power supply, it is only necessary to make electrical connections between the two terminals on the power supply.

[0026] Please combine Figure 1 As shown, each slider 18 is fixedly connected to a metal probe 11 on the side away from the fixed plate 3. Each slider 18 is provided with a positioning mechanism on its upper side. The fixed plate 3 is provided with a probe lifting mechanism on its upper side to move the metal probe 11 up and down. The base 1 is provided with a power supply feeding mechanism on its upper side.

[0027] Please combine Figure 1 and Figure 2As shown, the positioning mechanism includes a positioning nut 17 threaded onto the upper side of each slider 18. The lower end of the positioning nut 17 abuts against the upper side of the slide table 4. The position of the slider 18 can be adjusted by rotating the positioning nut 17.

[0028] Please combine Figure 1 As shown, the probe lifting and lowering mechanism includes a support 8 fixedly connected to the side of the fixed plate 3 near the load-bearing plate 2. A sliding sleeve 6 is fixedly connected to the lower side of the support 8. A punch 10 is slidably connected to the inner side of the sliding sleeve 6. The lower end of the punch 10 is fixedly connected to the upper end of the load-bearing plate 2. A punch drive mechanism is provided on the upper side of the support 8.

[0029] Please combine Figure 1 As shown, the punch drive mechanism includes a right-angle push handle 9 rotatably connected to the upper side of the support 8, and a connecting plate 7 rotatably connected to the upper end of the punch 10. The upper end of the connecting plate 7 is rotatably connected to the right-angle inflection point of the right-angle push handle 9.

[0030] Please combine Figure 1 The power supply feeding mechanism includes two slide rails 13 fixedly connected to the upper side of the base 1. The upper side of the two slide rails 13 is slidably connected to a positioning plate 12. The positioning plate 12 has a groove for placing the switching power supply. The lower side of the positioning plate 12 is provided with a positioning plate driving mechanism that moves the positioning plate 12 back and forth along the slide rails 13.

[0031] Please combine Figure 3 As shown, the positioning plate driving mechanism includes a toothed plate 14 fixedly connected to the lower side of the positioning plate 12, a gear 15 rotatably connected to the upper side of the base 1, a spiral sleeve opened inside the gear 15, the lower side of the spiral sleeve communicating with the interior of the base 1, the gear 15 meshing with the toothed plate 14, and a threaded post 16 meshing with the spiral sleeve inside the gear 15, the upper end of the threaded post 16 being fixedly connected to the lower side of the load-bearing plate 2.

[0032] When the threaded column 16 descends, the gear 15 rotates forward, and the positioning plate 12 moves from the outside to the inside;

[0033] When the threaded column 16 rises, the gear 15 reverses, and the positioning plate 12 moves from the inside to the outside.

[0034] Please combine Figure 2 As shown, a switch button 19 is installed on the upper side of the base 1, and a circuit board is installed on the inner side of the base 1. The circuit board is electrically connected to the switch button 19.

[0035] The implementation principle of a switching power supply test fixture in this application embodiment is as follows: The switching power supply to be tested is loaded onto the positioning plate 12. By rotating the positioning nut 17, the positions of the slider 18 and the metal probe 11 on the slide table 4 are adjusted to adapt to different positions of the switching power supply terminals. Then, the right-angle push handle 9 is pushed down. On the one hand, the connecting plate 7 can push the punch rod 10 down to push the load plate 2 down, which in turn drives the metal probe 11 down. On the other hand, the descent of the load plate 2 drives the threaded column 16 to insert the gear 15, which rotates the gear 15 and pushes the toothed plate 14 to move to one side, which drives the positioning plate 12 to move directly below the metal probe 11. When the lower end of the metal probe 11 is connected to the terminal of the switching power supply, the switch button 19 can be turned on to perform the test.

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A switching power supply test fixture, comprising a base (1), characterized in that, A fixing plate (3) is fixedly connected to the upper side of the base (1). A plurality of sliding rods (5) are fixedly connected to the side of the base (1) away from the fixing plate (3). A load-bearing plate (2) is slidably connected to the plurality of sliding rods (5). The upper ends of the plurality of sliding rods (5) are fixedly connected to one side of the fixing plate (3). A slide table (4) is fixedly connected to the side of the load-bearing plate (2) away from the fixing plate (3). A plurality of sliders (18) are slidably connected to the slide table (4). A metal probe (11) is fixedly connected to the side of each slider (18) away from the fixing plate (3). A positioning mechanism is provided on the upper side of each slider (18). A probe lifting mechanism for moving the metal probe (11) up and down is provided on the upper side of the fixing plate (3). A power supply feeding mechanism is provided on the upper side of the base (1). The positioning mechanism includes a positioning nut (17) threaded onto the upper side of each slider (18), the lower end of the positioning nut (17) abutting against the upper side of the slide (4); The probe lifting and lowering mechanism includes a support (8) fixedly connected to the side of the fixed plate (3) near the load-bearing plate (2), a sliding sleeve (6) fixedly connected to the lower side of the support (8), a punch (10) slidably connected to the inner side of the sliding sleeve (6), the lower end of the punch (10) fixedly connected to the upper end of the load-bearing plate (2), and a punch driving mechanism provided on the upper side of the support (8). The punch drive mechanism includes a right-angle push handle (9) rotatably connected to the upper side of the support (8), and a connecting plate (7) rotatably connected to the upper end of the punch (10). The upper end of the connecting plate (7) is rotatably connected to the right-angle push handle (9) at the right-angle inflection point. The power supply feeding mechanism includes multiple slide rails (13) fixedly connected to the upper side of the base (1). The upper side of the multiple slide rails (13) is slidably connected to a positioning plate (12). The positioning plate (12) has a groove for placing the switching power supply. The lower side of the positioning plate (12) is provided with a positioning plate driving mechanism that moves the positioning plate (12) back and forth along the slide rails (13). The positioning plate driving mechanism includes a toothed plate (14) fixedly connected to the lower side of the positioning plate (12), a gear (15) rotatably connected to the upper side of the base (1), a spiral sleeve is provided inside the gear (15), the lower side of the spiral sleeve is connected to the interior of the base (1), the gear (15) meshes with the toothed plate (14), the spiral sleeve inside the gear (15) meshes with a threaded column (16), and the upper end of the threaded column (16) is fixedly connected to the lower side of the load-bearing plate (2). A switch button (19) is installed on the upper side of the base (1), and a circuit board is installed on the inner side of the base (1). The circuit board is electrically connected to the switch button (19).

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