A key switch test load stroke curve machine

Abstract

The utility model relates to the technical field of key test, concretely is a kind of key switch test with load deflection curve machine: including load deflection curve machine main part, the surface of load deflection curve machine main part is fixedly connected with lift, the lifting end of lift is provided with detection head, the detection end of detection head is provided with detection rod, the surface of load deflection curve machine main part is provided with carousel mechanism, the carousel mechanism includes rotating lever, and the rotating lever rotation is connected on the surface of load deflection curve machine main part. The utility model drives worm rotation by servo motor, drives the rotation of worm wheel and rotating lever meshed with it, rotating lever drives adjusting turntable rotation, and then make the automatic rotation of key switch in the positioning groove on adjusting turntable, by rotating and moving to detection position, without manual frequent replacement key switch, greatly improve the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of button testing technology, specifically a load stroke curve tester for button switch testing. Background Technology

[0002] In electronic devices, push-button switches are a common input device. To ensure the quality of push-button switches, they need to undergo rigorous performance testing. Among them, the load-stroke curve is one of the important indicators for evaluating the performance of push-button switches. The load-stroke curve tester is a device used to test the relationship between load (pressure) and stroke (displacement) during the pressing and releasing process of push-button switches. By analyzing this curve, it is possible to accurately determine whether the feel, operating force, lifespan, elasticity and other performance of push-button switches meet the design requirements.

[0003] Existing load-stroke curve testing machines for push-button switches can typically only test each push-button switch individually. After testing one set of push-button switches, it is necessary to manually replace them with another set for testing. Operators need to repeatedly perform the same action of replacing push-button switches. When testing multiple sets of push-button switches, it is time-consuming and labor-intensive, greatly reducing the efficiency of testing. Utility Model Content

[0004] The purpose of this invention is to provide a load-stroke curve testing machine for push-button switches, in order to solve the problem mentioned in the background art that the operator needs to repeatedly perform the same action of changing push-button switches, which is time-consuming and labor-intensive when testing multiple sets of push-button switches, greatly reducing the efficiency of testing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a load stroke curve tester for push-button switches, comprising a load stroke curve tester body, a lifting mechanism fixedly connected to the surface of the load stroke curve tester body, a detection head provided at the lifting end of the lifting mechanism, a detection rod provided at the detection end of the detection head, a control panel provided on the surface of the load stroke curve tester body, a turntable mechanism provided on the surface of the load stroke curve tester body, the turntable mechanism including a rotating rod rotatably connected to the surface of the load stroke curve tester body, an adjusting turntable installed at the top of the rotating rod, a positioning groove provided on the surface of the adjusting turntable, a worm gear fixedly connected to the bottom of the rotating rod, a protective box fixedly connected inside the load stroke curve tester body, a servo motor fixedly connected to the surface of the protective box, a worm gear fixedly connected to the output shaft of the servo motor, a support column fixedly connected to the surface of the load stroke curve tester body, and ball bearings movably connected to the surface of the support column.

[0006] Preferably, the top of the rotating rod is provided with an installation mechanism, the installation mechanism including an installation frame, the installation frame being fixedly connected to the top of the rotating rod, a limit block being inserted into the surface of the installation frame, the limit block being fixedly connected to the bottom of the detection head, a reset spring being fixedly connected to the surface of the installation frame, a limit rod being fixedly connected to the surface of the reset spring, and the limit rod being slidably connected to the surface of the installation frame.

[0007] Preferably, the positioning slots are provided in multiple sets and are evenly arranged in a circle on the surface of the adjusting turntable. The adjusting turntable rotates on the surface of the load stroke curve machine body via a rotating rod, and the adjusting turntable switches the relative positions between the multiple sets of positioning slots by rotating.

[0008] Preferably, the worm gear and the worm are meshed with each other, the servo motor drives the worm to rotate through the output shaft, and the worm drives the rotating rod to rotate on the surface of the load stroke curve machine body through the worm gear.

[0009] Preferably, the bottom of one side of the adjusting turntable is connected to a ball bearing, and the support column supports one side of the adjusting turntable through the ball bearing.

[0010] Preferably, a limiting groove is formed on the surface of the mounting frame, and the limiting block is engaged with the limiting groove of the mounting frame. The rotating rod restricts the installation position of the adjusting turntable through the mounting frame and the limiting block.

[0011] Preferably, a limiting hole is formed on the surface of the limiting block, the elastic force of the reset spring acts on the limiting rod, and the limiting rod is inserted into the limiting hole of the limiting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This load stroke curve machine uses a servo motor to drive the worm gear to rotate, which in turn drives the meshing worm wheel and rotating rod to rotate. The rotating rod drives the adjustment turntable to rotate, which in turn causes the button switch in the positioning groove on the adjustment turntable to rotate automatically. By rotating, the button switch moves to the detection position, eliminating the need for frequent manual replacement of the button switch, which greatly improves detection efficiency and saves time and labor costs.

[0014] 2. This load stroke curve machine allows you to remove the adjusting turntable simply by pulling the limit rod outward. When installing a new adjusting turntable, align the limit block with the limit groove on the mounting frame surface and insert it. Release the limit rod, and the spring force of the return spring will cause the limit rod to insert into the limit hole of the limit block, completing the installation. This facilitates the replacement of the adjusting turntable and the positioning groove at the top of the rotating rod, enabling the equipment to adapt to different button switches and significantly improving the flexibility and versatility of the equipment. Attached Figure Description

[0015] Figure 1This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a partial schematic diagram of the structure of this utility model from the front and side;

[0017] Figure 3 This is a three-dimensional schematic diagram of the structure of this utility model, shown in side view, bottom view, and cross-sectional view.

[0018] Figure 4 This is a three-dimensional schematic diagram of the installation mechanism of this utility model, including front view, bottom view, and cross-sectional view.

[0019] Figure 5 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 1. Main body of the load stroke curve machine; 11. Elevator; 12. Detection head; 13. Detection rod; 14. Control panel; 2. Rotary rod; 21. Adjustment turntable; 22. Positioning groove; 23. Worm gear; 24. Protective box; 25. Servo motor; 26. Worm; 27. Support column; 28. Ball bearing; 3. Mounting frame; 31. Limit block; 32. Return spring; 33. Limit rod. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 One embodiment provided by this utility model:

[0023] A load-stroke curve testing machine for push-button switches includes a main body 1. A lifting platform 11 is fixedly connected to the surface of the main body 1. A detection head 12 is provided at the lifting end of the lifting platform 11, and a detection rod 13 is provided at the detection end of the detection head 12. A control panel 14 is provided on the surface of the main body 1 for controlling the entire device. The lifting platform 11 drives the detection head 12 and detection rod 13 to rise and fall via a lead screw or other driving device. The detection rod 13 directly contacts the push-button switch to test it. The testing technology is existing technology and will not be described in detail here. A turntable mechanism is provided on the surface of the main body 1. The turntable mechanism includes a rotating rod 2, which is rotatably connected to the surface of the main body 1. On the surface, an adjusting turntable 21 is installed on the top of the rotating rod 2. A positioning groove 22 is opened on the surface of the adjusting turntable 21. A worm gear 23 is fixedly connected to the bottom of the rotating rod 2. A protective box 24 is fixedly connected inside the main body 1 of the load stroke curve machine. A servo motor 25 is fixedly connected to the surface of the protective box 24. A worm gear 26 is fixedly connected to the output shaft of the servo motor 25. A support column 27 is fixedly connected to the surface of the main body 1 of the load stroke curve machine. A ball bearing 28 is movably connected to the surface of the support column 27. This turntable mechanism places multiple sets of key switches on the positioning groove 22. The adjusting turntable 21 drives the multiple sets of key switches to automatically switch positions through the positioning groove 22, thereby realizing automatic switching of key switch detection without manual operation, saving time and effort, and greatly improving the detection efficiency.

[0024] Furthermore, a mounting mechanism is provided at the top of the rotating rod 2. The mounting mechanism includes a mounting frame 3, which is fixedly connected to the top of the rotating rod 2. A limit block 31 is inserted into the surface of the mounting frame 3, and the limit block 31 is fixedly connected to the bottom of the detection head 12. A return spring 32 is fixedly connected to the surface of the mounting frame 3, and a limit rod 33 is fixedly connected to the surface of the return spring 32. The limit rod 33 is slidably connected to the surface of the mounting frame 3. For different button switches, different positioning slots 22 are required for the button switches to be positioned on the adjusting turntable 21. At this time, by making the installation of the adjusting turntable 21 at the top of the rotating rod 2 convenient, the adjusting turntable 21 and the positioning slot 22 can be easily replaced at the top of the rotating rod 2, thereby adapting to different button switches and improving the flexibility of the equipment.

[0025] Furthermore, multiple sets of positioning slots 22 are provided and are evenly arranged in a circle on the surface of the adjusting turntable 21. The adjusting turntable 21 rotates on the surface of the load stroke curve machine body 1 via the rotating rod 2, and the adjusting turntable 21 switches the relative positions between the multiple sets of positioning slots 22 by rotating. The button switch is placed on the adjusting turntable 21 by being limited by the positioning slots 22. The switching of the position of the positioning slots 22 realizes the switching of the button switch.

[0026] Furthermore, the worm gear 23 and the worm 26 mesh with each other, and the servo motor 25 drives the worm 26 to rotate through the output shaft. The worm 26 drives the rotating rod 2 to rotate on the surface of the load stroke curve machine body 1 through the worm gear 23. The transmission of the worm gear 23 and the worm 26 has a self-locking function, which can ensure the positional stability of the adjusting turntable 21 when it stops rotating, and avoid shaking during the detection process that affects the detection results.

[0027] Furthermore, the bottom of one side of the adjusting turntable 21 is connected to the ball bearing 28, and the support column 27 supports one side of the adjusting turntable 21 through the ball bearing 28. The ball bearing 28 can reduce the friction when the adjusting turntable 21 rotates, making the rotation of the adjusting turntable 21 smoother. At the same time, the support column 27 and the ball bearing 28 can support the adjusting turntable 21, preventing the adjusting turntable 21 from tilting due to uneven force, thus ensuring the accuracy of the detection.

[0028] Furthermore, a limiting groove is formed on the surface of the mounting frame 3, and the limiting block 31 is engaged with the limiting groove of the mounting frame 3. The rotating rod 2 restricts the installation position of the adjusting turntable 21 through the mounting frame 3 and the limiting block 31, thereby facilitating the positioning of different adjusting turntables 21 at the top of the rotating rod 2. Moreover, the center of the rotating rod 2 and the adjusting turntable 21 are on the same horizontal straight line, so that the adjusting turntable 21 can remain stable during rotation and will not have eccentric rotation, thus improving the reliability of the detection.

[0029] Furthermore, a limiting hole is formed on the surface of the limiting block 31, and the elastic force of the return spring 32 acts on the limiting rod 33. The limiting rod 33 is inserted into the limiting hole of the limiting block 31, and the limiting rod 33 restricts the limiting block 31 to the limiting groove of the mounting frame 3, thereby realizing the installation of the adjusting turntable 21 on the top of the rotating rod 2. The cooperation between the return spring 32 and the limiting rod 33 makes the installation and disassembly of the adjusting turntable 21 simple and convenient, while ensuring the firmness of the adjusting turntable 21 after installation.

[0030] Working principle: The operator first places multiple sets of push-button switches into the positioning grooves 22 on the surface of the adjusting turntable 21. Then, the operator starts the servo motor 25 via the control panel 14. The output shaft of the servo motor 25 drives the worm gear 26, which is fixedly connected to it, to rotate. Since the worm gear 26 meshes with the worm wheel 23 fixed at the bottom of the rotating rod 2, the rotation of the worm gear 26 drives the worm wheel 23 to rotate, thereby causing the rotating rod 2 to rotate on the surface of the load stroke curve machine body 1. The rotation of the rotating rod 2 drives the adjusting turntable 21 mounted on the top to rotate. The adjusting turntable 21, through the positioning grooves 22, automatically drives the multiple sets of push-button switches... When the button switch to be tested moves below the detection rod 13, the servo motor 25 stops rotating, the lifting platform 11 drives the detection head 12 and the detection rod 13 to descend, and the detection rod 13 performs load-stroke curve detection on the button switch. After the detection is completed, the lifting platform 11 drives the detection head 12 and the detection rod 13 to rise, the servo motor 25 starts again, and the adjusting turntable 21 continues to rotate to switch to the next button switch to be tested. The whole process does not require frequent manual replacement of button switches, realizing automatic switching of button switch detection, saving time and effort, and greatly improving the efficiency of detection.

[0031] When the adjustment turntable 21 needs to be replaced, the operator pulls the limiting rod 33 connected to the return spring 32 outward, causing the limiting rod 33 to be pulled out of the limiting hole on the surface of the limiting block 31. At this time, the limiting block 31 is no longer restricted, and the operator can remove the adjustment turntable 21 from the top of the rotating rod 2. When installing the new adjustment turntable 21, the operator aligns the limiting block 31 at its bottom with the limiting groove on the surface of the mounting frame 3 and inserts it. Then, the operator releases the limiting rod 33, and the elastic force of the return spring 32 will cause the limiting rod 33 to insert into the limiting hole of the limiting block 31, restricting the limiting block 31 on the limiting groove of the mounting frame 3, thus completing the installation of the new adjustment turntable 21. This facilitates the replacement of the adjustment turntable 21 and the positioning groove 22 at the top of the rotating rod 2, enabling the equipment to adapt to different button switches and improving the flexibility of the equipment.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A load-stroke curve testing machine for push-button switches, characterized in that: The system includes a load-stroke curve machine body (1), a lifting platform (11) fixedly connected to the surface of the load-stroke curve machine body (1), a detection head (12) provided at the lifting end of the lifting platform (11), a detection rod (13) provided at the detection end of the detection head (12), a control panel (14) provided on the surface of the load-stroke curve machine body (1), and a turntable mechanism provided on the surface of the load-stroke curve machine body (1). The turntable mechanism includes a rotating rod (2), which is rotatably connected to the surface of the load-stroke curve machine body (1). An adjustment turntable (21) is installed on the top, and a positioning groove (22) is opened on the surface of the adjustment turntable (21). A worm gear (23) is fixedly connected to the bottom of the rotating rod (2). A protective box (24) is fixedly connected inside the main body (1) of the load stroke curve machine. A servo motor (25) is fixedly connected to the surface of the protective box (24). A worm gear (26) is fixedly connected to the output shaft of the servo motor (25). A support column (27) is fixedly connected to the surface of the main body (1) of the load stroke curve machine. A ball bearing (28) is movably connected to the surface of the support column (27).

2. The load-stroke curve testing machine for push-button switches according to claim 1, characterized in that: The top of the rotating rod (2) is provided with an installation mechanism, which includes an installation frame (3). The installation frame (3) is fixedly connected to the top of the rotating rod (2). A limit block (31) is inserted into the surface of the installation frame (3). The limit block (31) is fixedly connected to the bottom of the detection head (12). A reset spring (32) is fixedly connected to the surface of the installation frame (3). A limit rod (33) is fixedly connected to the surface of the reset spring (32). The limit rod (33) is slidably connected to the surface of the installation frame (3).

3. The load-stroke curve testing machine for push-button switches according to claim 1, characterized in that: The positioning grooves (22) are provided in multiple sets and are evenly arranged in a circle on the surface of the adjusting turntable (21). The adjusting turntable (21) rotates on the surface of the load stroke curve machine body (1) by the rotating rod (2), and the adjusting turntable (21) switches the relative positions between the multiple sets of positioning grooves (22) by rotating.

4. The load-stroke curve testing machine for push-button switches according to claim 1, characterized in that: The worm wheel (23) and the worm (26) mesh with each other. The servo motor (25) drives the worm (26) to rotate through the output shaft. The worm (26) drives the rotating rod (2) to rotate on the surface of the load stroke curve machine body (1) through the worm wheel (23).

5. The load-stroke curve testing machine for push-button switches according to claim 1, characterized in that: The bottom of one side of the adjusting turntable (21) is connected to the ball bearing (28), and the support column (27) supports one side of the adjusting turntable (21) through the ball bearing (28).

6. The load-stroke curve testing machine for push-button switches according to claim 2, characterized in that: A limiting groove is provided on the surface of the mounting frame (3), and the limiting block (31) is engaged with the limiting groove of the mounting frame (3). The rotating rod (2) restricts the installation position of the adjusting turntable (21) through the mounting frame (3) and the limiting block (31).

7. The load-stroke curve testing machine for push-button switches according to claim 2, characterized in that: The limiting block (31) has a limiting hole on its surface, and the spring force of the reset spring (32) acts on the limiting rod (33), which is inserted into the limiting hole of the limiting block (31).

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