Watch key damping test fixture

Abstract

The utility model discloses a watch key damping test fixture, and belongs to the technical field of watch production. A watch button damping test fixture comprises a cabinet, a control module arranged in the cabinet, and a rotation module electrically connected with the control module; the swinging strip is connected with the watch key in a clamping manner, at least one group of weights are arranged on the swinging strip, an adjusting frame is fixedly arranged on the case, and a proximity switch for detecting the positions of the weights is arranged on the adjusting frame; through the structure, the damping test difficulty is greatly reduced, the test period is greatly shortened, a new flow production mode is realized, the repair cost caused by the process is greatly reduced, the scheme is clear and reliable in standard, the leakage of defective key torsion products is not easily caused, and compared with higher-end key torsion test graphic display equipment, the cost is lower, and the production efficiency is improved. And the debugging is simpler and more specific.

Description

A watch button damping test fixture Technical Field

[0001] This utility model relates to the field of watch manufacturing technology, and in particular to a watch button damping test fixture. Background Technology

[0002] During the watch manufacturing process, the damping force of the watch knobs and buttons is usually tested to ensure that the buttons and knobs of each product meet quality standards and improve the user experience.

[0003] Currently, the common testing method on the market is to observe the button vibration and whether the rotation range exceeds the specified range by rotating the watch case. However, since human operation and judgment are subjective, it is difficult to ensure that the testing conditions and judgment conditions are consistent every time, resulting in low accuracy of product test data and seriously affecting the quality of products leaving the factory. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that human error is large in the existing technology and it is difficult to ensure the accuracy of the test data, and to propose a watch button damping test fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A watch button damping testing fixture includes a chassis, a control module inside the chassis, and a rotation module electrically connected to the control module, the control module controlling the rotation module to rotate the watch; a swing bar engaged with the watch button, the swing bar having at least one set of weights; an adjustment frame fixedly mounted on the chassis, the adjustment frame having a proximity switch for detecting the position of the weights, and the proximity switch electrically connected to the circuit control module.

[0007] To facilitate the installation of the proximity switch and the adjustment of the height of the clamping seat, preferably, the adjusting frame has an L-shaped structure, and the clamping seat is slidably disposed on the adjusting frame. The proximity switch is threadedly connected to the clamping seat, and a first bolt is threadedly connected to the clamping seat, with one end of the first bolt abutting against the adjusting frame.

[0008] In order to accurately and quickly adjust the height of the proximity switch, the adjustment frame is further provided with an adjustment groove, the end face of the adjustment groove is provided with scale lines, and the proximity switch extends through the adjustment groove towards the weight.

[0009] To facilitate testing by driving the watch to rotate, preferably, the rotation module includes a fixed base fixedly mounted on the top of the chassis, an L-shaped mounting base rotatably mounted on the fixed base, a clamping fixture for holding the watch on the mounting base, and a motor for driving the mounting base to rotate fixedly mounted on the fixed base, the motor being electrically connected to the control module.

[0010] Furthermore, the clamping fixture includes a base for fixing the watch, the base being fixedly connected to the mounting base by a second bolt, and a cover plate being detachably installed on the base.

[0011] Furthermore, a first magnetic block is fixedly disposed on the top of the base, and a second magnetic block is fixedly disposed on the bottom of the cover plate, and the first magnetic block and the second magnetic block are magnetically attracted to each other.

[0012] Preferably, the swing bar has multiple sets of threaded holes at equal intervals at both ends, and one end of the weight is threaded into the threaded hole.

[0013] Furthermore, a connecting cylinder is fixedly provided on the swing bar, and the connecting cylinder is engaged with the watch button.

[0014] Preferably, the top of the chassis is provided with a cover, one end of which is rotatably connected to the chassis via a hinge, and the other end of which is detachably connected to the chassis via a fastener, and both ends of the chassis are provided with handles.

[0015] Preferably, the control module includes a circuit board fixedly installed inside the chassis, a start button fixedly installed on the chassis, a buzzer fixedly installed on the chassis, a green indicator light and a red indicator light fixedly installed on the chassis, a time relay fixedly installed on the chassis, and a speed control switch fixedly installed on the chassis.

[0016] Compared with the prior art, this utility model provides a watch button damping test fixture, which has the following beneficial effects:

[0017] 1. This watch button damping test fixture is designed to be used by fixing the clamping seat to a suitable position on the adjustment frame, then adjusting the extension length of the proximity switch to the upper limit of the weight movement, then selecting a weight of appropriate weight and installing it at the corresponding position on the swing bar, and rotating the module to drive the watch to rotate at a uniform speed. It is convenient to test, highly adaptable, and provides high accuracy of test data.

[0018] 2. This watch button damping test fixture has a clamping seat that slides along its height on the adjustment frame. This facilitates the adjustment of the detection height of the proximity switch and the installation of the proximity switch. In addition, the adjustment frame has scale lines, which can quickly and accurately adjust the height of the clamping seat. It is suitable for testing different damping of watch buttons and improves the performance.

[0019] All parts not covered in this device are the same as or can be implemented using existing technologies. Through the above structure, this utility model greatly reduces the difficulty and cycle of damping testing, realizes a new assembly line operation mode, greatly reduces the cost of rework due to defects caused by the process, and the solution is clear, reliable, and less likely to cause the loss of defective button torque products. Compared with higher-end button torque test display equipment, it has lower cost, simpler debugging, and more specific presentation. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the structure of a watch button damping test fixture proposed in this utility model;

[0021] Figure 2 is a schematic diagram of the structure of a watch button damping test fixture proposed in this utility model;

[0022] Figure 3 is a schematic diagram of the structure of a watch button damping test fixture base proposed in this utility model;

[0023] Figure 4 is a force analysis diagram of a watch button damping test fixture proposed in this utility model;

[0024] Figure 5 is a force analysis diagram of a watch button damping test fixture proposed in this utility model.

[0025] In the diagram: 1. Chassis; 101. Cover; 102. Start button; 103. Green indicator light; 104. Red indicator light; 105. Buzzer; 106. Emergency stop button; 107. Speed ​​control switch; 108. Time relay; 2. Mounting base; 201. Mounting bracket; 202. Base; 203. Cover plate; 204. First magnetic block; 205. Motor; 3. Swing bar; 301. Threaded hole; 302. Connecting cylinder; 4. Weight; 5. Button body; 6. Adjustment frame; 601. Clamping seat; 602. Proximity switch. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example:

[0029] Referring to Figures 1-5, a watch button damping testing fixture includes a housing 1, within which a control module is installed. The fixture also includes: a rotation module for rotating the watch during testing, electrically connected to the control module, which controls the rotation module to drive the watch to rotate; and a swing bar 3 that engages with the watch button, with a connecting cylinder 302 fixedly mounted on the swing bar 3. The connecting cylinder 302 engages with the watch button, specifically with the button body 5. During use, the connecting cylinder 302 is aligned with the button body 5 and pressed down forcefully. The inner wall of the connecting cylinder 302 and the outer wall of the button body 5 have an interference fit of 0.05mm or more, preventing damping during watch rotation. During the process, relative rotation occurs between the swing bar 3 and the button body 5, resulting in inaccurate test data. At least one set of weights 4 is provided on the swing bar 3. Here, we prefer one set of weights 4. We open multiple sets of threaded holes 301 at equal intervals at both ends of the swing bar 3. There are two to ten sets of threaded holes 301, preferably six sets, that is, three sets at each end of the swing bar 3. They are symmetrical about the axis of the connecting cylinder 302. One end of the weight 4 is threaded into the threaded hole 301. This not only facilitates the replacement and position adjustment of the weight 4, but also allows adjustment of the test force without replacing the weight 4 or changing its position on the swing bar 3. This is suitable for testing the damping of different watch buttons and improves the performance. An L-shaped adjustment frame 6 is fixedly installed on the chassis 1. A proximity switch 602 for detecting the weight 4 is installed on the adjustment frame 6. The proximity switch 602 is preferably a magnetic induction proximity switch 602. The proximity switch 602 is electrically connected to the circuit control module. In use, the clamping seat 601 is fixed at a suitable position on the adjustment frame 6, and then the extension length of the proximity switch 602 is adjusted. This position is the upper limit position of the movement of the weight 4. Then, a weight 4 of appropriate weight is selected and installed on the swing bar 3. The rotation module drives the watch to rotate at a uniform speed. The detection is convenient, highly adaptable, and the detection data is highly accurate.

[0030] Referring to Figures 1-3, the adjusting frame 6 has an L-shaped structure, and a clamping seat 601 is slidably arranged on the adjusting frame 6. The proximity switch 602 is threadedly connected to the clamping seat 601, which facilitates the adjustment of the extension length of the proximity switch 602. A first bolt is threadedly connected to the clamping seat 601, and one end of the first bolt abuts against the adjusting frame 6. In use, by providing a clamping seat 601 that slides along the height direction on the adjusting frame 6, it is convenient to adjust the detection height of the proximity switch 602 and to install the proximity switch 602, thereby improving the performance.

[0031] Referring to Figure 3, an adjustment groove is provided on the adjustment frame 6, and a scale line is provided on the end face of the adjustment groove. The proximity switch 602 extends through the adjustment groove toward the weight 4. In use, by providing an adjustment groove on the adjustment frame 6, interference with the proximity switch 602 can be reduced. Moreover, the scale line on the adjustment frame 6 allows for quick and accurate adjustment of the height of the clamp 601, which is suitable for testing different damping of watch buttons and improving the performance.

[0032] Referring to Figures 1 and 3, the rotating module is designed as follows: a fixed base 2 is fixedly installed on the top of the housing 1, and an L-shaped mounting base 201 is rotatably installed on the fixed base 2. A clamping fixture for holding the watch is installed on the mounting base 201, and a motor 205 for driving the mounting base 201 to rotate is fixedly installed on the fixed base 2. The motor 205 is electrically connected to the control module, that is, electrically connected to the circuit board. In use, the mounting base 201 is driven to rotate by the motor 205, and the mounting base 201 can rotate at a constant speed with the clamping fixture and the watch, which facilitates the testing of the damping of the handle button and improves the performance.

[0033] Referring to Figure 3, based on actual usage, the clamping fixture is designed as a base 202 for fixing the watch, and a cover plate 203 corresponding to the base 202. The base 202 is fixedly connected to the mounting base 201 by a second bolt, and the cover plate 203 is detached and installed on the base 202. In use, the base 202 is fixed on the mounting base 201 by the second bolt, which facilitates the replacement of the base 202 and is suitable for testing different watches, thus improving the range of applications. The cover plate 203 is detached and installed on the base 202 to prevent the watch from falling off the base 202 during rotation, which would affect normal use.

[0034] Referring to Figure 3, a first magnet 204 is fixedly installed on the top of the base 202, and a second magnet is fixedly installed on the bottom of the cover plate 203. The first magnet 204 and the second magnet are magnetically attracted to each other. A pull rod is fixedly installed on the top of the cover plate 203. In use, by placing the cover plate 203 on the base 202, the first magnet 204 and the second magnet are magnetically attracted, thus fixing the watch to the base 202. The cover plate 203 is easy to install and remove, and its fixation is reliable, improving the usability. Furthermore, the cover plate 203 can also be fixed to the base 202 using clips or screws.

[0035] Referring to Figures 1 and 2, a cover 101 is provided on the top of the chassis 1. One end of the cover 101 is rotatably connected to the chassis 1 via a hinge, and the other end of the cover 101 is detachably connected to the chassis 1 via a fastener. The start button 102, green indicator light 103, red indicator light 104, fixing base 2, and adjusting bracket 6 are all preferably fixed on the top end face of the cover 101. Handles are provided at both ends of the chassis 1. During use, the cover 101 is detached from the chassis 1, which facilitates the maintenance of the components inside the chassis 1 and improves their service life.

[0036] Referring to Figures 1 and 2, the control module is designed as follows: a circuit board is fixedly installed inside the chassis 1; a start button 102 and an emergency stop button 106 are fixedly installed on the chassis 1; a buzzer 105 is fixedly installed on the chassis 1; a green indicator light 103 and a red indicator light 104 are fixedly installed on the chassis 1; a time relay 108 is fixedly installed on the chassis 1; and a speed control switch 107 for adjusting the speed of the motor 205 is fixedly installed on the chassis 1. The start button 102, green indicator light 103, red indicator light 104, buzzer 105, emergency stop button 106, speed control switch 107, time relay 108, and motor 205 are all electrically connected to the circuit board. A power interface is fixedly installed on the outer wall of the chassis 1, with one end of the power interface electrically connected to the circuit board for convenient power supply and improved performance.

[0037] In this invention, the watch is moved in a uniform circular motion by the starter motor 205. During this process, if the button body 5 is stuck or rotates unevenly, the torque of the button can drive the weight 4 to the position of the proximity switch 602, where it is sensed. The sensing signal is transmitted to the circuit control module, which determines that the button torque exceeds the standard, indicating a stuck button or uneven rotation. This triggers an alarm on the buzzer 105 and illuminates the red indicator light 104. When the button rotates smoothly, but the button torque is insufficient to drive the weight 4 and cannot be sensed by the proximity switch 602, the time relay 108 on the circuit control module will determine that the button torque meets the standard if it does not receive a signal from the proximity switch 602 within a certain period after the detection is started. The green indicator light 103 then illuminates, indicating that the detection is successful. This achieves mass production and semi-automation of button torque testing; it solves the problems of unreliability and easy omissions in manually rotating the product button to determine whether there is a stuck button or uneven rotation; compared with more advanced button torque testing and display equipment, it has a lower cost, is simpler to debug, and presents more specific results.

[0038] When in use, the function is to detect products whose button torque exceeds the upper limit. This is the core part of the detection fixture. The height of the proximity switch 602 is also a control variable in the principle of the detection fixture. The height of the proximity switch 602 can be adjusted according to different product requirements. The adjustment bracket 6 that fixes the proximity switch 602 has a laser engraving degree of 0-20mm. The adjustment range is the length of the axis of the weight 4 and the axis of the connecting cylinder 302. The maximum center distance length L = 20mm. Each time, adjusting only the weight 4 or adjusting the height of the proximity switch 602 changes the upper limit standard of the product torque.

[0039] Referring to Figure 4, under normal circumstances, the control standard is a 3g weight 4, the height of the proximity switch 602 is 20mm, and the upper limit of the button torque control is F_torque = MG * L = 3 × 0.001 × 10 × 20 × 0.001 = 6 × 10-4 N·M; Explanation: When the weight 4 rotates to the position of the proximity switch 602, through force analysis, the centripetal force of the weight 4 is equal to the lever arm tension. At this time, the weight of the weight 4 in the static state is equal to the button torque (friction force).

[0040] Referring to Figure 5, when the button torque control standard needs to be lowered, but only a 3g weight 4 is available, the height of the proximity switch 602 can be adjusted to a suitable height: for example, when adjusted to 10mm, the equation can be written.

[0041] FdirectionCOSθ + FtorsionSINθ = mg + FtensionCOSθ

[0042] FdirectionSINθ = FtensionSINθ + FtorsionCOSθ

[0043] F_direction = (mv2) / L

[0044] The magnitude of the button torque can be calculated and used as a control standard. Due to the complexity of the calculation method, this adjustment method is only applicable to roughly lowering the upper limit of button torque control standard when there is no suitable weight.

[0045] The testing steps are as follows:

[0046] Step 1: Place the product to be tested on the base 202, and then cover it with the cover plate 203 to prevent it from rotating and falling off;

[0047] Step 2: Install weights 4 onto the button body 5 for testing;

[0048] Step 3: Press the start button 102 to start the detection;

[0049] Step 4: The detection program starts. When the button is stuck or rotates unevenly, the button torque can drive the weight 4 to the position of the proximity switch 602, where it will be sensed. After the sensing signal is transmitted to the circuit control module, it will determine that the button torque of the product exceeds the standard, and there is a problem with the button being stuck or rotating unevenly. This will trigger the buzzer 105 to sound an alarm and the red indicator light 104 to light up if the test fails. When the button rotates smoothly, and the button torque is insufficient to drive the weight 4 to rotate and be sensed by the proximity switch 602, the circuit control module, in conjunction with the time relay 108, will determine that the button torque of the product meets the standard if it does not receive a signal from the proximity switch 602 within a certain period of time after the test starts. The green indicator light 103 will then light up if the test passes.

[0050] Step 5: Test complete, remove the product.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A watch button damping testing fixture, comprising a chassis (1), wherein the chassis (1) is provided with a control module, characterized in that, Also includes: A rotating module, which is electrically connected to a control module, wherein the control module controls the rotating module to drive the watch to rotate; A swing bar (3) is connected to the watch button. At least one set of weights (4) is provided on the swing bar (3). An adjustment frame (6) is fixedly provided on the chassis (1). A proximity switch (602) for detecting the position of the weights (4) is provided on the adjustment frame (6). The proximity switch (602) is electrically connected to the circuit control module.

2. The watch button damping test fixture according to claim 1, characterized in that, The adjusting frame (6) has an L-shaped structure. A clamping seat (601) is slidably arranged on the adjusting frame (6). The proximity switch (602) is threadedly connected to the clamping seat (601). A first bolt is threadedly connected to the clamping seat (601), and one end of the first bolt abuts against the adjusting frame (6).

3. The watch button damping test fixture according to claim 2, characterized in that, The adjustment frame (6) has an adjustment groove, and the end face of the adjustment groove is provided with scale lines. The proximity switch (602) extends through the adjustment groove toward the weight (4).

4. The watch button damping test fixture according to claim 1, characterized in that, The rotating module includes a fixed base (2) fixedly mounted on the top of the chassis (1), an L-shaped mounting base (201) rotatably mounted on the fixed base (2), a clamping fixture for holding the watch is mounted on the mounting base (201), and a motor (205) for driving the mounting base (201) to rotate is fixedly mounted on the fixed base (2), and the motor (205) is electrically connected to the control module.

5. A watch button damping testing fixture according to claim 4, characterized in that, The clamping fixture includes a base (202) for fixing the watch. The base (202) is fixedly connected to the mounting base (201) by a second bolt, and a cover plate (203) is detachably provided on the base (202).

6. A watch button damping testing fixture according to claim 5, characterized in that, A first magnetic block (204) is fixedly disposed on the top of the base (202), and a second magnetic block is fixedly disposed on the bottom of the cover plate (203). The first magnetic block (204) and the second magnetic block are magnetically attracted to each other.

7. A watch button damping testing fixture according to claim 1, characterized in that, The swing bar (3) has multiple sets of threaded holes (301) at equal intervals at both ends, and one end of the weight (4) is threaded into the threaded hole (301).

8. A watch button damping testing fixture according to claim 7, characterized in that, A connecting tube (302) is fixedly installed on the swing bar (3), and the connecting tube (302) is engaged with the watch button.

9. A watch button damping testing fixture according to claim 1, characterized in that, The top of the chassis (1) is provided with a cover (101). One end of the cover (101) is rotatably connected to the chassis (1) via a hinge, and the other end of the cover (101) is detachably connected to the chassis (1) via a fastener. Both ends of the chassis (1) are provided with handles.

10. A watch button damping testing fixture according to claim 1, characterized in that, The control module includes a circuit board fixedly installed inside the chassis (1). A start button (102) is fixedly installed on the chassis (1). A buzzer (105) is fixedly installed on the chassis (1). A green indicator light (103) and a red indicator light (104) are fixedly installed on the chassis (1). A time relay (108) is fixedly installed on the chassis (1). A speed control switch (107) is fixedly installed on the chassis (1).

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