Switching life test apparatus

Abstract

The utility model discloses a kind of switch life test equipment, knob life test device can be used to test the working life of knob, specific mode is the fixed part of knob is installed in fixed unit, the rotating part of knob is installed in driving unit, the rotating part of knob can be driven relative fixed part by the rotation of chuck of servo motor of driving unit, that is, knob is twisted, after the preset number of times of knob is repeatedly twisted, whether knob can still effectively work is observed or tested, so the working life of knob can be obtained. The rotating part of knob is clamped and fixed by three evenly distributed clamping claws, which can improve the clamping effect of the knob, prevent the knob from rotating offset relative to the chuck, and ensure the authenticity and reliability of the test results.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a switch life testing device. Background Technology

[0002] Rotary switches are common electrical components in our daily lives, widely used in food processors, lamps, and other electrical appliances. To ensure product quality, manufacturers must conduct quality tests on switches before they leave the factory. Life testing is one of the most common methods for testing switch quality. The life testing process for rotary switches typically involves fixing the fixed and rotating parts of the switch separately, then repeatedly turning the rotating part. In some technologies, inadequate fixing of the rotating part can cause it to deflect after repeated turning, affecting the test results. Utility Model Content

[0003] The main purpose of this invention is to propose a switch life testing device, which aims to solve the technical problem of how to make the life test results of knobs more accurate and reliable.

[0004] To achieve the above objectives, the switch life testing equipment proposed in this utility model includes:

[0005] Workbench;

[0006] A knob life testing device is installed on the workbench. The device includes a drive unit and a fixing unit. The drive unit includes a chuck and a servo motor. The output shaft of the servo motor is connected to the chuck to drive its rotation. The chuck has three protruding jaws evenly distributed along its circumference to form a locking position for fixing the rotating part of the knob under test. The fixing unit includes fixing sleeves spaced at intervals on one side of the chuck and coaxially arranged with it for fixing the fixed part of the knob under test.

[0007] The main control board is electrically connected to the servo motor and is used to control the servo motor to drive the chuck to reset when the chuck rotates at a preset angle.

[0008] Optionally, the drive unit further includes a torque sensor mounted on the chuck, the torque sensor being used to detect the torque exerted by the chuck on the tested knob, the torque sensor being electrically connected to the main control board, and the main control board being used to adjust the torque of the servo motor according to the torque exerted by the chuck on the tested knob.

[0009] Optionally, the side of the claw facing the locking position is configured as a concave arc surface.

[0010] Optionally, the fixing unit includes a bracket, a slide, and a threaded rod. The bracket is mounted on the worktable, the threaded rod is rotatably mounted on the bracket, and the slide is slidably mounted on the bracket. The slide has a connecting hole, and the threaded rod is threaded into the connecting hole so that when the threaded rod rotates, it can drive the slide to move along the length direction of the threaded rod. The length direction of the threaded rod is parallel to the rotation axis of the chuck, so that the slide can move towards or away from the chuck. The fixing sleeve is mounted on the slide so that the distance between the fixing sleeve and the chuck is adjustable.

[0011] Optionally, the fixing unit further includes a handwheel connected to the end of the threaded rod away from the chuck.

[0012] Optionally, the fixing unit further includes a locking structure mounted on the bracket, the locking structure being used to lock or unlock the threaded rod.

[0013] Optionally, the switch life testing equipment further includes a button life testing device and a control panel, wherein the button life testing device is installed on the table surface of the workbench and the control panel is installed on the side wall of the workbench;

[0014] The button life testing device includes a linear drive mechanism, a mounting base, and a pressing column. The linear drive mechanism includes a slide that can move up and down. The mounting base is connected to the slide. The pressing column is mounted on the mounting base. The worktable is provided with a mounting position for mounting the button to be tested. The mounting position is located below the pressing column. The pressing column is used to press or move away from the button to be tested as the mounting base moves up and down.

[0015] The main control board is electrically connected to the linear drive mechanism to control the linear drive mechanism to drive the pressing column to move up and down; the control panel is electrically connected to the main control board.

[0016] Optionally, the pressing column is an elastic column, and the pressing column is detachably installed on the mounting base.

[0017] Optionally, the pressing column includes a column body and an elastic element. The column body is detachably mounted on the mounting base, and the elastic element is detachably encircled by the column body. One end of the elastic element abuts against the mounting base, and the other end abuts against the column body.

[0018] Optionally, the pressing end of the pressing column is fitted with a flexible protective sleeve.

[0019] In the technical solution of this utility model's switch life testing equipment, the knob life testing device can be used to test the working life of a knob. Specifically, the fixed part of the knob is installed in a fixed unit, and the rotating part of the knob is installed in a drive unit. The servo motor of the drive unit drives the chuck to rotate, which in turn causes the rotating part of the knob to rotate relative to the fixed part, i.e., to turn the knob. After repeatedly turning the knob a preset number of times, it is observed or tested whether the knob can still work effectively, thus determining the knob's working life. Using three evenly distributed jaws to clamp and fix the rotating part of the knob improves the clamping effect and prevents the knob from rotating or shifting relative to the chuck, ensuring the authenticity and reliability of the test results. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the switch life testing equipment of this utility model;

[0022] Figure 2 This is a schematic diagram of the drive unit in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the fixing unit in this utility model;

[0024] Figure 4 This is a schematic diagram of the key life testing device of this utility model.

[0025] Explanation of icon numbers:

[0026] label name label name label name 10 workbench 20 Knob life testing device 21 drive unit 22 Fixed unit 23 Chuck 24 Servo motor 231 Claw 232 Card slot 221 Fixing sleeve 25 support 26 Slide 27 threaded rod 261 Connection hole 28 hand crank 29 Locking structure 30 Key life testing equipment 40 control Panel 31 Linear drive mechanism 32 Mounting base 33 Press column 311 Slide

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] 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.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] Rotary switches are common electrical components in our daily lives, widely used in food processors, lamps, and other electrical appliances. To ensure product quality, manufacturers must conduct quality tests on switches before they leave the factory. Life testing is one of the most common methods for testing switch quality. The life testing process for rotary switches typically involves fixing the fixed and rotating parts of the switch separately, then repeatedly turning the rotating part. In some technologies, inadequate fixing of the rotating part can cause it to deflect after repeated turning, affecting the test results.

[0032] The main purpose of this invention is to propose a switch life testing device, which aims to solve the technical problem of how to make the life test results of knobs more accurate and reliable.

[0033] like Figure 1 and Figure 2As shown, the switch life testing equipment proposed in this utility model includes: a workbench 10; and a knob life testing device 20, which is installed on the workbench 10. The knob life testing device 20 includes a drive unit 21 and a fixing unit 22. The drive unit 21 includes a chuck 23 and a servo motor 24. The output shaft of the servo motor 24 is connected to the chuck 23 to drive the chuck 23 to rotate. The chuck 23 has three protruding jaws 231, which are arranged along the circumference of the chuck 23. The components are evenly distributed to form locking positions 232, which are used to fix the rotating part of the knob under test; the fixing unit 22 includes a fixing sleeve 221, which is spaced apart on one side of the chuck 23 and coaxially arranged with the chuck 23, and is used to fix the fixing part of the knob under test; the main control board is electrically connected to the servo motor 24, and the main control board is used to control the servo motor 24 to drive the chuck 23 to reset when the chuck 23 rotates to a preset angle.

[0034] The workbench 10 supports the knob life testing device 20. The drive unit 21 and the fixed unit 22 are arranged adjacent to each other, specifically, the chuck 23 of the drive unit 21 is close to the fixing sleeve 221 of the fixed unit 22. The drive unit 21 includes a fixed frame, the main body of the servo motor 24 is fixed to the fixed frame, the chuck 23 is connected to the output shaft of the servo motor 24, the chuck 23 is disc-shaped, and the jaws 231 protrude from the side of the chuck 23 facing away from the servo motor 24. The three jaws 231 are evenly distributed around the rotation axis of the chuck 23. The rotating part of the knob can be engaged and installed within the engagement position 232 surrounded by the three jaws 231, while the fixed part of the knob can be fixedly installed in the fixing sleeve 221 of the fixed unit 22. The servo motor 24 drives the chuck 23 to rotate, which in turn causes the rotating part of the knob to rotate, i.e., the rotating part of the knob is turned relative to its fixed part.

[0035] The servo motor 24 can feed back the rotation angle of its output shaft to the main control board, thereby reflecting the rotation angle of the chuck 23. When the rotation angle of the chuck 23 reaches the preset angle, the main control board can control the servo motor 24 to reverse so that the chuck 23 is reset, thereby driving the rotating part of the knob to reset. It can be understood that the preset angle is the maximum stroke that the rotating part of the knob can be turned relative to its fixed part. In this way, the knob can be protected from being over-turned to prevent the knob from being damaged during the test.

[0036] After repeatedly turning the knob a preset number of times (e.g., 100,000 times), observe or test whether the knob can still work effectively, thus determining the knob's service life. Using three evenly distributed jaws 231 to lock and fix the rotating part of the knob improves the locking effect and prevents the knob from rotating relative to the chuck 23, ensuring the reliability of the test results.

[0037] Specifically, the drive unit 21 further includes a torque sensor mounted on the jaw 231. The torque sensor detects the torque exerted by the jaw 231 on the tested knob. The torque sensor is electrically connected to the main control board, which adjusts the torque of the servo motor 24 based on the torque exerted by the jaw 231 on the tested knob. The torque sensor detects the magnitude of the torque experienced by the knob during rotation. When the torque experienced by the knob is large, the main control board adjusts the torque of the servo motor 24 to reasonably control the torque exerted on the knob and prevent the knob from being damaged due to excessive torque.

[0038] In practical applications, the knob is usually round, and the side of the claw 231 facing the locking position 232 is set as a concave arc surface. The concave arc surface of the claw 231 is adapted to the shape of the peripheral wall of the knob, thereby increasing the mating area between the claw 231 and the knob, so as to improve the locking stability of the claw 231 on the knob.

[0039] For example, such as Figure 3 As shown, the fixing unit 22 includes a bracket 25, a slide 26, and a threaded rod 27. The bracket 25 is mounted on the worktable 10. The threaded rod 27 is rotatably mounted on the bracket 25. The slide 26 is slidably mounted on the bracket 25. The slide 26 has a connecting hole 261. The threaded rod 27 is threadedly engaged with the connecting hole 261 so that when the threaded rod 27 rotates, it can drive the slide 26 to move along the length direction of the threaded rod 27. The length direction of the threaded rod 27 is parallel to the rotation axis of the chuck 23 so that the slide 26 can move towards or away from the chuck 23. The fixing sleeve 221 is mounted on the slide 26 so that the distance between the fixing sleeve 221 and the chuck 23 is adjustable.

[0040] The connecting hole 261 has threads on its wall. The threaded rod 27 is threaded into the connecting hole 261 of the slide 26, which allows the rotation of the threaded rod 27 to be converted into the linear motion of the slide 26. By driving the threaded rod 27 to rotate forward or backward, the slide 26 can be driven to move closer to or away from the chuck 23. When installing the knob to be tested on the knob life testing device 20, the knob to be tested is first installed on the fixed unit 22. At this time, it is necessary to drive the slide 26 away from the chuck 23, that is, drive the fixed sleeve 221 away from the chuck 23, so that there is enough operating space between the fixed sleeve 221 and the chuck 23, so that the operator can install the knob to be tested on the fixed sleeve 221. After the knob to be tested is installed in place on the fixed sleeve 221, the threaded rod 27 is rotated to drive the slide 26 closer to the chuck 23, that is, to drive the knob to be tested closer to the chuck 23, so that the rotating part of the knob to be tested can be engaged in the locking position 232. After the test is completed, the drive slide 26 moves away from the chuck 23 again to disengage the knob from the chuck 23, making it easier for the operator to remove the knob from the retaining sleeve 221. This simplifies the process of assembling and disassembling the knob under test on the knob life testing device 20, improving the convenience of assembly and disassembly.

[0041] The threaded rod 27 can be driven manually or automatically.

[0042] Specifically, such as Figure 3 As shown, the fixing unit 22 also includes a hand crank 28, which is connected to the end of the threaded rod 27 away from the chuck 23. By cranking the hand crank 28, the operator can drive the threaded rod 27 to rotate, facilitating manual operation. This allows the operator to manually slow down the movement speed of the slide table 26 when the knob to be tested is about to enter the locking position 232, preventing the knob from impacting the chuck 23 and causing damage, thus improving the protection of the knob.

[0043] In practical applications, such as Figure 3 As shown, the fixing unit 22 also includes a locking structure 29 mounted on the bracket 25, which is used to lock or unlock the threaded rod 27. After the test knob is engaged on the chuck 23, the operator can lock the threaded rod 27 through the locking structure 29 to prevent the slide table 26 from shifting due to the rotation of the threaded rod 27 during the test, thereby improving the stability of the test process. After the test, the operator can unlock the threaded rod 27 through the locking structure 29 and reverse the threaded rod 27 to move the slide table 26 away from the chuck 23.

[0044] For example, such as Figure 1 and Figure 4As shown, the switch life testing equipment also includes a button life testing device 30 and a control panel 40. The button life testing device 30 is installed on the table surface of the workbench 10, and the control panel 40 is installed on the side wall of the workbench 10. The button life testing device 30 includes a linear drive mechanism 31, a mounting base 32, and a pressing column 33. The linear drive mechanism 31 includes a slide 311 that can move up and down. The mounting base 32 is connected to the slide 311, and the pressing column 33 is installed on the mounting base 32. The workbench 10 is provided with a mounting position for mounting the button to be tested. The mounting position is located below the pressing column 33. The pressing column 33 is used to press or move away from the button to be tested as the mounting base 32 moves up and down. The main control board is electrically connected to the linear drive mechanism 31 to control the linear drive mechanism 31 to drive the pressing column 33 to move up and down. The control panel 40 is electrically connected to the main control board.

[0045] The button life testing device 30 can be used to test the lifespan of button switches. Specifically, it drives the slide 311 to move up and down repeatedly via a linear motion mechanism, which in turn drives the mounting base 32 and the pressing column 33 to move up and down repeatedly. This allows the pressing column 33 to repeatedly press the button to be tested located below. After the button has been pressed a preset number of times, it is observed or tested whether the button can still work effectively, thus determining the button's working lifespan. The button life testing device 30 and the knob life testing device 20 are controlled by the same main control board, which is electrically connected to the control panel 40. This allows operators to control both the button life testing device 30 and the knob life testing device 20 through the same control panel 40.

[0046] Switch life testing equipment can test the lifespan of both buttons and knobs, improving testing efficiency, reducing equipment manufacturing costs, and simplifying operation procedures.

[0047] Specifically, the pressing post 33 is an elastic post, which is detachably mounted on the mounting base 32. A flexible sleeve is fitted over the pressing end of the pressing post 33. When the elastic post presses the button, it undergoes upward elastic deformation or movement, thus buffering the button and preventing damage due to excessive pressing force from the pressing post 33, thereby improving the protection of the tested button. The flexible sleeve can be a rubber sleeve, which reduces the hardness of the contact area between the pressing post 33 and the button, thereby reducing wear on the button caused by each press and making the pressing effect of the pressing post 33 closer to the pressing effect of a human finger, further improving the reliability of the test results. The pressing post 33 is detachable, allowing for the replacement of pressing posts 33 with different pressure requirements according to the pressure requirements of different buttons.

[0048] In practical applications, the pressing column 33 includes a column body and an elastic element. The column body is detachably mounted on the mounting base 32, and the elastic element is detachably ring-shaped around the column body. One end of the elastic element abuts against the mounting base 32, and the other end abuts against the column body. When the pressing column 33 presses the button, the elastic element is compressed, and the pressing column 33 moves upward. When the pressing column 33 moves away from the button, the elastic element restores its deformation, driving the pressing column 33 to reset, thereby achieving a buffering effect. Both the column body and the elastic element are detachable, allowing for the replacement of elastic elements with different elastic coefficients according to different pressing frequencies, button types, or button travel distances, thus improving testing results.

[0049] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A switch life testing device, characterized in that, include: Workbench; A knob life testing device is installed on the workbench. The device includes a drive unit and a fixing unit. The drive unit includes a chuck and a servo motor. The output shaft of the servo motor is connected to the chuck to drive its rotation. The chuck has three protruding jaws evenly distributed along its circumference to form a locking position for fixing the rotating part of the knob under test. The fixing unit includes fixing sleeves spaced at intervals on one side of the chuck and coaxially arranged with it for fixing the fixed part of the knob under test. The main control board is electrically connected to the servo motor and is used to control the servo motor to drive the chuck to reset when the chuck rotates at a preset angle.

2. The switch life testing equipment as described in claim 1, characterized in that, The drive unit also includes a torque sensor mounted on the chuck, the torque sensor being used to detect the torque exerted by the chuck on the tested knob, the torque sensor being electrically connected to the main control board, the main control board being used to adjust the torque of the servo motor according to the torque exerted by the chuck on the tested knob.

3. The switch life testing equipment as described in claim 1, characterized in that, The side of the claw facing the locking position is set as a concave arc surface.

4. The switch life testing equipment as described in claim 1, characterized in that, The fixing unit includes a bracket, a slide, and a threaded rod. The bracket is mounted on the worktable, the threaded rod is rotatably mounted on the bracket, and the slide is slidably mounted on the bracket. The slide has a connecting hole, and the threaded rod is threaded into the connecting hole so that when the threaded rod rotates, it can drive the slide to move along the length direction of the threaded rod. The length direction of the threaded rod is parallel to the rotation axis of the chuck, so that the slide can move towards or away from the chuck. The fixing sleeve is mounted on the slide so that the distance between the fixing sleeve and the chuck is adjustable.

5. The switch life testing equipment as described in claim 4, characterized in that, The fixing unit also includes a hand crank, which is connected to the end of the threaded rod away from the chuck.

6. The switch life testing equipment as described in claim 5, characterized in that, The fixing unit also includes a locking structure installed on the bracket, which is used to lock or unlock the threaded rod.

7. The switch life testing equipment as described in claim 1, characterized in that, The switch life testing equipment also includes a button life testing device and a control panel. The button life testing device is installed on the table surface of the workbench, and the control panel is installed on the side wall of the workbench. The button life testing device includes a linear drive mechanism, a mounting base, and a pressing column. The linear drive mechanism includes a slide that can move up and down. The mounting base is connected to the slide. The pressing column is mounted on the mounting base. The worktable is provided with a mounting position for mounting the button to be tested. The mounting position is located below the pressing column. The pressing column is used to press or move away from the button to be tested as the mounting base moves up and down. The main control board is electrically connected to the linear drive mechanism to control the linear drive mechanism to drive the pressing column to move up and down; the control panel is electrically connected to the main control board.

8. The switch life testing equipment as described in claim 7, characterized in that, The pressing column is an elastic column, and the pressing column is detachably installed on the mounting base.

9. The switch life testing equipment as described in claim 8, characterized in that, The pressing column includes a column body and an elastic element. The column body is detachably installed on the mounting base, and the elastic element is detachably encircled on the column body. One end of the elastic element abuts against the mounting base, and the other end abuts against the column body.

10. The switch life testing equipment as described in claim 7, characterized in that, The pressing end of the pressing column is fitted with a flexible protective sleeve.

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