Switch button service life test mechanism

Abstract

The utility model discloses a switch button service life test mechanism, comprising a crank slide block mechanism installed on a support, a pressure head installed on a slide block, and a switch button positioning seat located below the pressure head, a crank connecting rod mechanism is driven by a motor, a connecting rod of the crank slide block mechanism comprises an upper connecting lug and a lower connecting lug, and the upper connecting lug is connected with the lower connecting lug. The upper end of the middle screw is in threaded connection with the upper connecting lug, and the lower end of the middle screw is in threaded connection with the lower connecting lug. When the middle screw is rotated, the upper connecting lug and the lower connecting lug can get close to each other or get away from each other to adjust the total length of the connecting rod, and then the descending amplitude of the sliding block and the pressing head on the sliding block is adjusted, so that the descending limit position of the pressing head is equal to or close to the lowest position when the switch button is pressed. Therefore, the accuracy of the service life test of the switch button can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic product testing technology, specifically to the testing of switch buttons. Background Technology

[0002] The switch button life test involves repeatedly pressing the switch button with a rising and falling pressure head to test the number of presses the button can withstand, thereby determining the switch button's lifespan. The drive unit for repeatedly raising and lowering the pressure head can be a crank-slider mechanism, driven by a motor. The length of the connecting rod in the crank-slider mechanism affects the range of pressure head movement. The range of pressure head descent directly affects the accuracy of the test results; if the descent is too large, the switch button may be damaged after only a few presses. Utility Model Content

[0003] The technical problem solved by this utility model is: how to adjust the length of the connecting rod so that the descent of the pressure head can be adapted to the accurate testing of the switch button.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a switch button life test mechanism, including a crank-slider mechanism mounted on a bracket, a pressure head mounted on the slider, and a switch button positioning seat located below the pressure head. The crank-connecting rod mechanism is driven by a motor. The connecting rod of the crank-slider mechanism includes an upper connecting lug and a lower connecting lug, and a middle screw with the upper connecting lug screwed to the upper end and the lower connecting lug screwed to the lower end. Both ends of the middle screw are provided with bidirectional threads.

[0005] Rotating the central screw causes the upper and lower connecting ears to move closer together or further apart due to the different thread directions at both ends. This adjusts the overall length of the connecting rod, thereby adjusting the descent of the slider and its upper pressure head. The pressure head's descent limit is then equal to or close to the lowest position when the switch button is pressed. This improves the accuracy of switch button lifespan testing.

[0006] The central screw has a hexagonal block in the middle, and the operator can rotate the central screw with a wrench.

[0007] The crank is fixedly connected to the motor shaft via a connecting assembly. The connecting assembly includes a main connecting component and a secondary connecting component. The main connecting component includes a disc-shaped connecting part and a clamping part. The clamping part is semi-circular in shape and has a first positioning plane on its inner side. The secondary connecting component is also semi-circular in shape, and the side wall of the motor shaft has a second positioning plane. The first and second positioning planes mate with each other. The secondary connecting component and the clamping part are connected by bolts, and the crank is connected to the disc-shaped connecting part. The secondary connecting component and the clamping part clamp the motor shaft, and the mating first and second positioning planes restrict the rotation of the main connecting component relative to the motor shaft. Therefore, the motor can effectively drive the crank to rotate, preventing slippage.

[0008] The slider has a positioning groove, and the square part at the top of the indenter fits into the positioning groove and is fixed with bolts. The cylindrical structure at the bottom of the indenter is a button for pressing. The positioning groove restricts the upward displacement of the indenter relative to the slider, thereby improving the accuracy of the test results.

[0009] The bracket includes a support frame and a vertical support plate. The motor is fixed to the vertical support plate, and the slider slides on the vertical support plate. A sensor is mounted on the vertical support plate, and a sensor accessory is mounted on the slider. Driven by the motor, the crank rotates continuously, driving the slider to repeatedly rise and fall along the slide rail. When the slider reaches its highest position, the sensor accessory also reaches its highest position, triggering the sensor; when the slider reaches its lowest position, the switch button is pressed. Thus, the number of times the switch button is pressed by the pressure head is the same as the number of times the sensor is triggered. The number of times the switch button is pressed can be determined from the number of times the sensor is triggered.

[0010] The switch button is electrically connected to an indicator light via a wire. The indicator light is located on the side wall of the work platform. When the switch button is pressed, the circuit containing the indicator light and power supply is completed, forming a loop, and the indicator light illuminates. If the switch button is damaged after being pressed several times, the indicator light will turn off. The sensor feeds back the number of presses to the main control unit, which displays the results on the screen.

[0011] The switch button positioning base includes a switch button positioning plate, a support frame connected to the switch button positioning plate, and a bottom positioning plate located at the bottom of the support frame. A positioning post is provided on the work platform to position the bottom positioning plate, and the bottom positioning plate has connection holes aligned with threaded holes on the work platform. After the bottom positioning plate is positioned on the positioning post, the operator uses bolts to fix the bottom positioning plate to the work platform. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of a switch button life test mechanism;

[0014] Figure 2 for Figure 1 A schematic diagram showing the middle cover 80mm concealed.

[0015] Figure 3 for Figure 2 A schematic diagram of the crank-slider mechanism;

[0016] Figure 4 for Figure 3 A schematic diagram of the crank-slider mechanism viewed from the rear.

[0017] Figure 5 A schematic diagram of the combined structure of motor 40 and crank 60;

[0018] Figure 6 is an exploded view of the motor 40 and the crank 60; Figure 5

[0019] Figure 7 is a schematic view of the motor 40 and the crank 60 from another perspective;

[0020] Figure 8 is an exploded view of the motor 40 and the crank 60; Figure 7

[0021] Figure 9 is a schematic view of the connecting rod 50;

[0022] Figure 10 is an exploded view of the motor 40 and the crank 60; Figure 9

[0023] Figure 11 is a schematic view of the switch button positioning seat 30;

[0024] Figure 12 is a schematic view of the switch button positioning seat 30 from the rear in the Figure 11

[0025] Figure 13 is an exploded view of the motor 40 and the crank 60. Figure 12

[0026] Explanation of symbols in the figures:

[0027] 10, slider; 11, inductor; 12, inductor accessory; 13, slide rail;

[0028] 20, pressure head; 21, square portion; 22, cylindrical structure;

[0029] 30, switch button positioning seat; 31, switch button positioning plate; 32, second support frame; 33, bottom positioning plate block; 34, connecting hole position;

[0030] 40, motor; 41, motor shaft; 42, second positioning plane;

[0031] 50, connecting rod; 51, upper connecting ear; 52, lower connecting ear; 53, middle screw; 54, hexagonal block; 55, fastening nut;

[0032] 60, crank; 61, main connecting piece; 62, auxiliary connecting piece; 63, disc-shaped connecting portion; 64, clamping portion; 65, first positioning plane;

[0033] 70, support; 71, first support frame; 72, vertical support plate; 73, work platform; 75, indicator light; 76, display screen; 77, motor start button; 78, motor stop button;

[0034] ​​​​​80. Cover; 81. Front upright panel; 82. Rear upright panel;

[0035] 90. Switch button. Detailed Implementation

[0036] like Figure 3 , Figure 9 The switch button life test mechanism includes a crank-slider mechanism mounted on a bracket 70, a pressure head 20 mounted on a slider 10, and a switch button positioning seat 30 located below the pressure head. The crank-connecting rod mechanism is driven by a motor 40. The connecting rod 50 of the crank-slider mechanism includes an upper connecting lug 51 and a lower connecting lug 52, as well as a middle screw 53 with the upper connecting lug screwed to the upper end and the lower connecting lug screwed to the lower end. Both ends of the middle screw are provided with bidirectional threads.

[0037] Rotating the central screw 53 causes the upper connecting ear 51 and the lower connecting ear 52 to either come closer together or move away from each other due to the different directions of the threads at both ends of the central screw. This adjusts the total length of the connecting rod 50, thereby adjusting the descent amplitude of the slider 10 and its upper pressure head 20 so that the limit position of the pressure head 20 is equal to or close to the lowest position when the switch button 90 is pressed.

[0038] like Figure 9 A hexagonal block 54 is provided in the middle of the central screw 53, allowing the operator to rotate the central screw 53 with a wrench. A fastening nut 55 is screwed onto the central screw 53. After the connecting rod 50 reaches the appropriate length, the operator tightens the fastening nut 55 to fix the relative position of the central screw 53 with the upper connecting lug 51 and the lower connecting lug 52, thereby fixing the total length of the connecting rod 50.

[0039] Combination Figures 5 to 8 The crank 60 is fixedly connected to the motor shaft 41 via a connecting assembly. The connecting assembly includes a main connecting component 61 and a connecting auxiliary component 62. The main connecting component includes a disc-shaped connecting part 63 and a clamping part 64. The clamping part is semi-circular in shape and has a first positioning plane 65 on its inner side. The connecting auxiliary component is also semi-circular in shape, and the side wall of the motor shaft has a second positioning plane 42. The first and second positioning planes mate. The connecting auxiliary component and the clamping part are connected by bolts. The crank 60 is connected to the disc-shaped connecting part 63. The connecting auxiliary component 62 and the clamping part 64 clamp the motor shaft 41. The mating first and second positioning planes 65 and 42 restrict the rotation of the main connecting component 61 relative to the motor shaft 41. Therefore, the motor 40 can effectively drive the crank 60 to rotate, preventing slippage.

[0040] like Figure 3The slider 10 has a positioning groove, and the square part 21 at the top of the pressure head fits into the positioning groove and is fixedly connected with bolts. The cylindrical structure 22 at the bottom of the pressure head presses the switch button 90. The positioning groove can limit the upward displacement of the pressure head 20 relative to the slider 10, thereby improving the accuracy of the test results.

[0041] The bracket 70 includes a first support frame 71 and a vertical support plate 72. The motor 40 is fixed on the vertical support plate, and the slider 10 is slidably fitted on the vertical support plate. The vertical support plate is provided with a sensor 11, and the slider is provided with a sensor accessory 12.

[0042] Combination Figures 11 to 13 The switch button positioning base 30 includes a switch button positioning plate 31, a second support frame 32 connected to the switch button positioning plate, and a bottom positioning plate 33 disposed at the bottom of the second support frame. The work platform 73 is provided with positioning posts for positioning the bottom positioning plate, and the bottom positioning plate is provided with connecting holes 34 aligned with threaded holes on the work platform. After the bottom positioning plate 33 is positioned on the positioning posts, the operator uses bolts to fix the bottom positioning plate 33 to the work platform 73.

[0043] Driven by motor 40, crank 60 rotates continuously, driving slider 10 to repeatedly rise and fall along slide rail 13. When slider 10 reaches its highest position, sensor accessory 12 also reaches its highest position, triggering sensor 11; when slider 10 reaches its lowest position, switch button 90 is pressed. Thus, the number of times switch button 90 is pressed by pressure head 20 is the same as the number of times sensor 11 is triggered. The number of times sensor 11 is triggered indicates the number of times switch button has been pressed. Sensor 11 feeds back the detected number of presses to the main control unit, which displays the data on display screen 76.

[0044] refer to Figure 2 The switch button 90 is electrically connected to the indicator light 75 via a wire. The indicator light is located on the side wall of the work platform 73. When the switch button 90 is pressed down, the circuit containing the indicator light and the power supply is completed, forming a loop, and the indicator light 75 lights up. After the switch button 90 is pressed several times, it will be damaged, and the indicator light 75 will turn off.

[0045] Combination Figure 1 , Figure 2 The working platform 73 is provided with a front upright plate 81 and a rear upright plate 82. A cover 80 is installed on the front upright plate and the rear upright plate, and the cover covers the crank slider mechanism and the motor 40.

[0046] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A switch button life test mechanism comprising a crank slider mechanism mounted on a bracket (70), a presser head (20) mounted on a slider (10), a switch button positioning seat (30) located below the presser head, and a crank connecting rod mechanism driven by a motor (40), characterized in that: The connecting rod (50) of the slider-crank mechanism comprises an upper connecting lug (51) and a lower connecting lug (52), and a middle screw rod (53) with a two-way thread at both ends, the upper end of the middle screw rod being screwed with the upper connecting lug and the lower end being screwed with the lower connecting lug.

2. The switch button life test mechanism of claim 1, wherein: The middle part of the middle screw rod (53) is provided with a hexagonal block (54).

3. The switch button life test mechanism of claim 1, wherein: The crank (60) is fixedly connected with the motor shaft (41) through a connecting assembly, the connecting assembly comprising a connecting main part (61) and a connecting auxiliary part (62), the connecting main part comprising a disc-shaped connecting part (63) and a clamping part (64), the clamping part being in the shape of a half circular ring, the inner side of the clamping part being provided with a first positioning plane (65), the connecting auxiliary part being in the shape of a half circular ring, the side wall of the motor shaft being provided with a second positioning plane (42), the first positioning plane being matched with the second positioning plane, the connecting auxiliary part being connected with the clamping part through bolts, and the crank (60) being connected with the disc-shaped connecting part (63).

4. The switch button life test mechanism of claim 1, wherein: The slider (10) is provided with a positioning groove, the square part (21) at the upper part of the pressing head being fitted in the positioning groove and being fixedly connected through bolts, and the columnar structure (22) at the lower part of the pressing head pressing the switch button (90).

5. The switch button life test mechanism of claim 1, wherein: The bracket (70) comprises a first support bracket (71) and a vertical support plate (72), the motor (40) being fixed on the vertical support plate, the slider (10) being slidingly fitted on the vertical support plate, the vertical support plate being provided with an inductor (11), and the slider being provided with an inductor accessory (12).

6. The switch button life test mechanism of claim 1, wherein: The switch button positioning seat (30) comprises a switch button positioning plate (31), a second support bracket (32) connected with the switch button positioning plate, and a bottom positioning plate block (33) provided at the bottom of the second support bracket, the working platform (73) being provided with a positioning column for positioning the bottom positioning plate block, and the bottom positioning plate block being provided with a connecting hole (34) aligned with a threaded hole on the working platform.

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