Key load testing machine

Abstract

The utility model discloses a key load testing machine, which relates to the technical field of load measurement, and comprises a base and a gantry frame arranged on the base, a Y-axis driving device is arranged in the base, the surface of the top end of the base is movably connected with a testing platform, the testing platform is in power connection with the Y-axis driving device, and the Y-axis driving device is arranged on the gantry frame. An X-axis driving device is arranged in a cross beam of the gantry rack, one side of the cross beam is movably connected with a load loading module, the load loading module is in power connection with the X-axis driving device, a Z-axis driving device is arranged in the load loading module, a test head assembly is arranged at the lower end of the load loading module, and the Z-axis driving device is in power connection with the X-axis driving device. The testing head assembly is in power connection with the Z-axis driving device; the testing machine can adapt to the testing requirements of different types of keys through the replaceable testing head and the stable connection mode, and accurate load testing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of load measurement, in particular to a key load testing machine. Background Art

[0002] In the field of electronic products, silicone keypads are widely used due to their good tactile feel and waterproof properties. Accurately testing the load characteristics of silicone keypads is crucial to ensuring the quality of electronic products.

[0003] The key load testers currently available on the market have significant deficiencies in their test heads. Traditional test heads are usually designed for keys of specific specifications and have poor adaptability when faced with silicone keys of different sizes. Specifically:

[0004] On the one hand, when silicone keys are small, traditional test heads may not be able to accurately locate them, resulting in inaccurate contact between the test head and the key. This not only leads to large errors in load measurements but can also damage the keys due to poor contact. For example, silicone keys used in some small electronic devices may only be a few millimeters in size. Traditional test heads, due to their large size and lack of flexibility, have difficulty accurately testing their loads.

[0005] On the other hand, for larger silicone keys, traditional test heads may not fully cover the key surface, resulting in test results that do not reflect the load characteristics of the entire key. For example, silicone keys on some industrial control equipment are large and may have irregular shapes. During testing, traditional test heads may only contact a portion of the key, making it impossible to fully evaluate the key's performance.

[0006] Furthermore, silicone buttons of different sizes may also vary in shape. The fixed structure of traditional test heads is difficult to adapt to buttons of various shapes, further limiting the versatility of the tester. This means that in actual production and quality inspection, multiple test heads of different specifications are required to accommodate silicone buttons of different sizes and shapes, increasing costs and operational complexity.

[0007] In summary, the test head of the existing key load testing machine has serious deficiencies in adapting to silicone keys of different sizes and urgently needs to be improved to meet the market's higher requirements for silicone key quality testing. Utility Model Content

[0008] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0009] A key load testing machine includes a base and a gantry frame arranged on the base, a Y-axis drive device is arranged in the base, a top surface of the base is movably connected to a test platform, the test platform is dynamically connected to the Y-axis drive device, an X-axis drive device is arranged in a crossbeam of the gantry frame, a load loading module is movably connected to one side of the crossbeam, the load loading module is dynamically connected to the X-axis drive device, a Z-axis drive device is arranged in the load loading module, a test head assembly is arranged at the lower end of the load loading module, and the test head assembly is dynamically connected to the Z-axis drive device;

[0010] The test head assembly includes a connecting piece fixedly arranged at the lower end of the load-loading module, a sensor is provided on one side or the end of the connecting piece, the connecting piece has an inner groove, a probe longitudinally threadedly connected to the connecting piece is provided at the inner groove, a first clamping block and a second clamping block movably connected to the connecting piece are respectively provided on both sides of the probe, and a first rotation adjustment piece respectively linked to the first clamping block and a second rotation adjustment piece linked to the second clamping block are provided on the outside of the inner groove, so that the first clamping block and the second clamping block are driven to clamp or release the probe through the first rotation adjustment piece and the second rotation adjustment piece.

[0011] As a further solution of the present invention: a guide rod is provided at the inner groove, and the first clamping block and the second clamping block are movably provided on both sides of the guide rod;

[0012] The first rotation adjusting member and the second rotation adjusting member are respectively linked to the first clamping block and the second clamping block through screws.

[0013] As a further solution of the present invention: a concave groove is provided on one side opposite to the first clamping block and the second clamping block, and a flexible shock-absorbing member is provided at the concave groove.

[0014] As a further solution of the present invention: anti-slip textures are provided on the first clamping block / the second clamping block and on both sides of the recessed groove.

[0015] As a further solution of the present invention: the top end of the probe is provided with a threaded column, and the inner bottom of the inner groove of the connecting member is provided with a threaded groove that matches the threaded column.

[0016] As a further solution of the present invention: the X-axis drive device, the Y-axis drive device and the Z-axis drive device are all driven by servo motors, and transmission is achieved through ball screws, gear racks, or synchronous belts.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1) Stable probe connection ensures good contact between the probe and the key during the test, and prevents measurement errors caused by probe shaking or loosening. Whether performing precision testing on small silicone keys or load measurement on large keys, the accuracy of the measurement results can be guaranteed;

[0019] 2) The interchangeable probes and stable connection method enable the tester to adapt to the testing needs of different types of keys. Whether they are regular-shaped keys or special-shaped keys, whether they are small keys or large-sized keys, accurate load testing can be achieved by selecting the appropriate probe and ensuring its stable connection;

[0020] 3) Stable connection reduces wear and damage to other parts of the testing machine caused by loose or shaking probes. At the same time, reasonable clamping method will not cause excessive squeezing of the probe, extending the service life of the probe and reducing equipment maintenance costs.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure from a viewing angle along the AA direction;

[0025] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure from another perspective along the AA direction;

[0027] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 6 It is a structural diagram of the first clamping block / the second clamping block in the present invention.

[0029] The reference numerals and names in the figures are as follows:

[0030] 1. Base; 2. Gantry frame; 3. Y-axis drive device; 4. Test platform; 5. X-axis drive device; 6. Load loading module; 7. Z-axis drive device; 8. Test head assembly; 9. Connector; 10. Sensor; 11. Inner groove; 12. Probe; 13. First clamping block; 14. Second clamping block; 15. First rotation adjustment member; 16. Second rotation adjustment member; 17. Guide rod; 18. Stud; 19. Recessed groove; 20. Flexible shock absorber; 21. Anti-slip texture; 22. Threaded column; 23. Threaded groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-6 In an embodiment of the present utility model, a button load testing machine includes a base 1 and a gantry frame 2 arranged on the base 1, a Y-axis driving device 3 is arranged in the base 1, a top surface of the base 1 is movably connected with a test platform 4, the test platform 4 is dynamically connected to the Y-axis driving device 3, an X-axis driving device 5 is arranged in the crossbeam of the gantry frame 2, a load loading module 6 is movably connected to one side of the crossbeam, the load loading module 6 is dynamically connected to the X-axis driving device 5, a Z-axis driving device 7 is arranged in the load loading module 6, a test head assembly 8 is arranged at the lower end of the load loading module 6, and the test head assembly 8 is dynamically connected to the Z-axis driving device 7;

[0033] The test head assembly 8 includes a connector 9 fixedly mounted at the lower end of the load-applying module 6, a sensor 10 being provided on one side or end of the connector 9, the connector 9 having an inner groove 11, a probe 12 being longitudinally threadedly connected to the connector 9 being provided at the inner groove 11, a first clamping block 13 and a second clamping block 14 being movably connected to the connector 9 being provided on both sides of the probe, a first rotation adjusting member 15 and a second rotation adjusting member 16 being linked to the second clamping block 14 being provided on the outer side of the inner groove 11, so as to drive the first clamping block 13 and the second clamping block 14 to clamp or release the probe through the first rotation adjusting member 15 and the second rotation adjusting member 16.

[0034] In the technical solution of the present invention, the Y-axis drive device 3 is located in the base 1, and the test platform 4 can be accurately moved along the Y-axis direction on the top surface of the base 1 through a power connection. This design allows the keys placed on the test platform 4 to be adjusted in the Y-axis direction so as to be better aligned with the test head assembly 8; the X-axis drive device 5 is arranged in the crossbeam of the gantry frame 2, and is power-connected to the load-loading module 6, and can control the load-loading module 6 to move in the X-axis direction, so that the position of the test head assembly 8 can be adjusted in the horizontal direction to ensure that it is accurately aligned with the key to be tested; the Z-axis drive device 7 is located in the load-loading module 6, and is power-connected to the test head assembly 8, and can control the test head assembly 8 to move in the vertical direction to achieve loading and measurement of the key;

[0035] The inner groove 11 of the connector 9 is connected to the probe 12 by a longitudinal thread. This connection method makes it easy and quick to replace the probe 12. When it is necessary to test buttons of different sizes or shapes, the operator can easily unscrew the old probe 12 and replace it with a suitable new probe 12. This allows different probes 12 to be customized according to specific testing requirements. For example, a smaller probe 12 can be selected for small silicone buttons, while a larger probe 12 can be selected for large buttons to ensure good contact between the probe 12 and the button.

[0036] A first clamping block 13 and a second clamping block 14 are provided on both sides of the measuring head 12, which are linked to the first clamping block 13 and the second clamping block 14 respectively through a first rotating adjusting member 15 and a second rotating adjusting member 16. When the measuring head 12 is installed, the first rotating adjusting member 15 and the second rotating adjusting member 16 can be rotated to drive the first clamping block 13 and the second clamping block 14 to move toward the measuring head 12, thereby clamping the measuring head 12 from both sides. In this process, since the measuring head 12 is connected to the inner groove 11 of the connecting member 9 by a longitudinal thread, the height can be adjusted according to different test requirements. This clamping method provides stable support for the probe 12 in multiple directions. In the horizontal direction, the first clamping block 13 and the second clamping block 14 can prevent the probe 12 from shaking left and right; in the vertical direction, the longitudinal threaded connection and the clamping of the first clamping block 13 and the second clamping block 14 work together to ensure that the probe 12 will not loosen up and down. At the same time, the movable connection between the first clamping block 13, the second clamping block 14 and the connecting member 9 allows the clamping force to be adjusted according to the needs of different probes 12, which not only ensures the stability of the connection, but also prevents the probe 12 from being damaged by excessive squeezing.

[0037] In summary, the stable connection of the probe 12 can ensure that the contact between the probe 12 and the button is always good during the test, and there will be no measurement error due to shaking or loosening of the probe 12. Whether it is a fine test of a small silicone button or a load measurement of a large button, the accuracy of the measurement results can be guaranteed; the replaceable probe 12 plus the stable connection method enables the testing machine to adapt to the testing needs of different types of buttons, whether it is a button with a regular shape or an irregular shape, whether it is a button with a small size or a larger button, accurate load testing can be achieved by selecting a suitable probe 12 and ensuring its stable connection; the stable connection reduces the wear and damage to other parts of the testing machine caused by looseness or shaking of the probe 12. At the same time, the reasonable clamping method will not cause excessive squeezing of the probe 12, thereby extending the service life of the probe 12 and reducing the maintenance cost of the equipment.

[0038] In the embodiment of the present invention, a guide rod 17 is provided at the inner groove 11 , and the first clamping block 13 and the second clamping block 14 are movably provided on both sides of the guide rod 17 ;

[0039] The first rotation adjusting member 15 and the second rotation adjusting member 16 are respectively linked to the first clamping block 13 and the second clamping block 14 through the screw 18 .

[0040] Two guide rods 17 are provided at the inner groove 11 of the connecting member 9. The first clamping block 13 and the second clamping block 14 are movably provided on both sides of the guide rods 17. The guide rods 17 provide a stable track for the movement of the first clamping block 13 and the second clamping block 14, ensuring that the first clamping block 13 and the second clamping block 14 maintain linear motion during movement without deviation or shaking. When the first rotating adjustment member 15 and the second rotating adjustment member 16 respectively drive the first clamping block 13 and the second clamping block 14 to move, the guide rods 17 limit the movement direction of the first clamping block 13 and the second clamping block 14, so that the first clamping block 13 and the second clamping block 14 can accurately move toward or away from the measuring head 12, thereby clamping or releasing the measuring head 12.

[0041] The first rotating adjusting member 15 and the second rotating adjusting member 16 are respectively linked to the first clamping block 13 and the second clamping block 14 via a stud 18. The rotational motion of the first rotating adjusting member 15 / the second rotating adjusting member 16 is converted into linear motion of the first clamping block 13 / the second clamping block 14 via the stud 18. When the first rotating adjusting member 15 / the second rotating adjusting member 16 rotates, the stud 18 pushes the first clamping block 13 / the second clamping block 14 to move along the guide rod 17 under the action of the thread. By adjusting the rotation direction and angle of the first rotating adjusting member 15 / the second rotating adjusting member 16, the position of the first clamping block 13 / the second clamping block 14 can be precisely controlled, thereby achieving adjustment of the clamping force of probes 12 of different sizes.

[0042] The first rotation adjusting member 15 and the second rotation adjusting member 16 may both be knobs.

[0043] In the embodiment of the present invention, a recessed groove 19 is provided on the opposite side of the first clamping block 13 and the second clamping block 14, and a flexible shock-absorbing member 20 is provided at the recessed groove 19; anti-slip textures 21 are provided on the first clamping block 13 / the second clamping block 14 and on both sides of the recessed groove 19.

[0044] A recessed groove 19 is provided on the side opposite to the first clamping block 13 and the second clamping block 14 to provide a mounting space for a flexible shock absorbing member 20. When the first clamping block 13 and the second clamping block 14 clamp the stylus 12, the flexible shock absorbing member 20 is in direct contact with the stylus 12. The flexible shock absorbing member 20 is generally made of a material having a certain elasticity and cushioning property, such as rubber, silicone, etc., and can play a cushioning role when the first clamping block 13 and the second clamping block 14 clamp the stylus 12, thereby reducing the rigid impact of the first clamping block 13 and the second clamping block 14 on the stylus 12, thereby extending the service life of the stylus 12.

[0045] Anti-slip textures 21 are provided on the first clamping block 13 and the second clamping block 14 and on both sides of the recessed groove 19. The anti-slip textures 21 can increase the friction between the first clamping block 13, the second clamping block 14 and the stylus 12, thereby preventing the stylus 12 from sliding during the clamping process. The anti-slip textures 21 can be designed in various shapes and patterns, such as mesh or stripes, to improve the anti-slip effect.

[0046] The anti-slip texture 21 ensures that the probe 12 is stable and does not slide, while the flexible shock-absorbing member 20 reduces vibration and impact during the clamping process, thereby ensuring the accurate and stable position of the probe 12 and improving the overall clamping effect.

[0047] In the embodiment of the present invention, the top end of the probe has a threaded column 22 , and the inner bottom of the inner groove 11 of the connecting member 9 is provided with a threaded groove 23 that matches the threaded column 22 .

[0048] The threaded connection has high connection strength and stability. Through the mutual engagement of the threads, the probe 12 can be firmly fixed on the connector 9 and is not easy to loosen or fall off during the test. Especially when performing a key load test, it is necessary to apply a certain pressure to the probe 12. The threaded connection can ensure that the probe 12 remains in a stable position under force, thereby ensuring the accuracy of the test results.

[0049] In the embodiment of the present invention, the X-axis drive device 5, the Y-axis drive device 3 and the Z-axis drive device 7 are all driven by servo motors, and transmission is achieved through ball screws, gear racks, or synchronous belts.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A key load testing machine, characterized in that: The invention comprises a base and a gantry frame arranged on the base, a Y-axis driving device is arranged in the base, a test platform is movably connected to the top surface of the base, the test platform is dynamically connected to the Y-axis driving device, an X-axis driving device is arranged in the crossbeam of the gantry frame, a load loading module is movably connected to one side of the crossbeam, the load loading module is dynamically connected to the X-axis driving device, a Z-axis driving device is arranged in the load loading module, a test head assembly is arranged at the lower end of the load loading module, and the test head assembly is dynamically connected to the Z-axis driving device; The test head assembly includes a connecting piece fixedly arranged at the lower end of the load-loading module, a sensor is provided on one side or the end of the connecting piece, the connecting piece has an inner groove, a probe longitudinally threadedly connected to the connecting piece is provided at the inner groove, a first clamping block and a second clamping block movably connected to the connecting piece are respectively provided on both sides of the probe, and a first rotation adjustment piece respectively linked to the first clamping block and a second rotation adjustment piece linked to the second clamping block are provided on the outside of the inner groove, so that the first clamping block and the second clamping block are driven to clamp or release the probe through the first rotation adjustment piece and the second rotation adjustment piece.

2. A key load testing machine according to claim 1, characterized in that: A guide rod is provided at the inner groove, and the first clamping block and the second clamping block are movably provided on both sides of the guide rod; The first rotation adjusting member and the second rotation adjusting member are respectively linked to the first clamping block and the second clamping block through screws.

3. A key load testing machine according to claim 1, characterized in that: A concave groove is formed on one side of the first clamping block and the second clamping block opposite to each other, and a flexible shock-absorbing member is provided at the concave groove.

4. A key load testing machine according to claim 3, characterized in that: Anti-slip textures are provided on the first clamping block / the second clamping block and on both sides of the recessed groove.

5. A key load testing machine according to claim 1, characterized in that: The top end of the measuring head is provided with a threaded column, and the inner bottom of the connecting piece located in the inner groove is provided with a threaded groove matched with the threaded column.

6. A key load testing machine according to any one of claims 1 to 5, characterized in that: The X-axis drive device, the Y-axis drive device and the Z-axis drive device are all driven by servo motors and are driven by ball screws, gear racks, or synchronous belts.

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