Switch spring fatigue fault degree testing device and method

Abstract

The invention relates to the field of spring fatigue testing equipment, in particular to a switch spring fatigue fault degree testing device and method.The switch spring fatigue fault degree testing device comprises a spring fatigue testing device body, the spring fatigue testing device body comprises a bottom bin, and a servo motor is arranged in the bottom bin and installed in an installation base; the servo motor is installed on one side of the middle in the bottom bin, the top driving end of the servo motor is fixedly connected with a driving gear, one side of the driving gear is in meshed connection with a gear ring, the gear ring is fixedly connected to the lower portion of the periphery of a rotating sleeve, and the rotating sleeve is fixedly connected to the middle of the bottom end of a connecting disc. According to the invention, the top arc at the tail end of the sliding rod can drive the elastic plate to deform synchronously, so that the radian of the elastic plate can be changed, people can test fatigue data of the switch spring main body under different compression coefficients, and the test data can be more comprehensive.

Description

Technical Field

[0001] The invention relates to the field of spring fatigue testing equipment, and in particular to a switch spring fatigue failure degree testing device and method. Background Art

[0002] The switch spring is a micro switch component with a very small size. The switch spring is a mechanical part that uses elasticity to work. The switch spring bears load during work, and its load force and fatigue resistance directly affect the service life of the switch. The switch spring fatigue test mainly performs fatigue test on the switch spring by compressing or stretching the switch spring to obtain the fatigue characteristics of the switch spring, so that the appropriate switch spring can be correctly used in different applications. Therefore, the switch spring fatigue test device has become one of the necessary devices for switch spring manufacturers and application manufacturers. In the prior art, the switch spring fatigue test machine cannot perform fatigue test on multiple switch springs at the same time, and the test effect is not ideal. At the same time, the compression or stretching force during the test is often relatively fixed, which is inconsistent with actual manual use, resulting in the test data being different from the actual data. Therefore, we propose a switch spring fatigue failure degree test device and method to solve the above-mentioned problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a switch spring fatigue failure degree testing device and method.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a switch spring fatigue failure degree testing device, including a spring fatigue testing device, the spring fatigue testing device including a bottom bin, a servo motor is arranged inside the bottom bin, the servo motor is installed inside the mounting seat, the servo motor is installed on one side of the middle part of the bottom bin, the top driving end of the servo motor is fixedly connected with a driving gear, one side of the driving gear is meshedly connected with a gear ring, the gear ring is fixedly connected to the lower part of the outer periphery of the rotating sleeve, the rotating sleeve is fixedly connected to the middle part of the bottom end of the connecting disk, a plurality of fixed brackets are fixedly connected to the outer periphery of the connecting disk, the fixed brackets are fixedly connected to a fixed block 1 at one end away from the connecting disk, elastic plates are arranged between the fixed blocks 1, both ends of the elastic plates are slidably connected to the limit grooves, the limit grooves are opened at the two ends of the fixed block 1, the upper part of the fixed brackets is provided with fixed columns, and the fixed columns are fixedly connected to the outer periphery of the fixed disk.

[0005] Preferably, a stepper motor is installed in the middle of the fixed disk, a threaded rod is fixedly connected to the bottom driving end of the stepper motor, a turntable is fixedly connected to the bottom of the threaded rod, the turntable is rotatably connected to the middle part of the connecting disk, and a threaded block is threadedly connected to the outer periphery of the stepper motor.

[0006] Preferably, the outer periphery of the threaded block is rotatably connected to a plurality of support rods via a rotating seat, the ends of the support rods away from the threaded block are rotatably connected to the bottom of the sliding rods via a rotating seat, the sliding rods are slidably connected to the outer periphery of the fixed disk, and the ends of the sliding rods away from the fixed disk are fixedly connected to a top arc.

[0007] Preferably, a double-headed motor is installed in the middle part of one end of the sliding rod close to the top arc, and the upper and lower driving ends of the double-headed motor are fixedly connected with a rotating shaft, and the rotating shaft is rotatably connected to the sliding rod, and the rotating shaft is fixedly connected to a driving gear at the upper and lower parts of the rotating shaft, and the driving gear is meshed with a tooth groove on the side away from the fixed plate, and the tooth groove is opened on the outer periphery of the second fixed block, and the second fixed block is fixedly connected to the middle part of one end of the limiting plate close to the sliding rod, and the limiting plate and the second fixed block are rotatably connected to the outer periphery of the vertical section of the limiting bent rod, and the end of the limiting bent rod close to the sliding rod is clamped inside the connecting block, and the connecting blocks are fixedly connected to the upper and lower sides of the middle part of one end of the top arc close to the fixed plate.

[0008] Preferably, the rotating sleeve is rotatably connected to the middle part of the mounting plate, and the mounting plate is fixedly connected to the middle part of the bottom bin.

[0009] Preferably, a cover plate is fixedly connected to the top of the bottom bin, an opening is provided in the middle of the cover plate, a mounting ring is fixedly connected to the top of the cover plate, an end cap is clamped with the top of the cover plate through the mounting ring, and the end cap is made of transparent material.

[0010] Preferably, the end of the limit bending rod away from the sliding rod is slidably connected inside the fixed sleeve, and the fixed sleeve is fixedly connected to the upper and lower sides of the middle part of one end of the elastic plate close to the fixed disk, and the end of the limit disk close to the sliding rod is provided with a guide groove, and the guide groove is slidably connected with a guide rod inside, and the end of the guide rod away from the guide groove is slidably connected to the upper and lower sides of the middle part of one end of the elastic plate close to the fixed disk.

[0011] Preferably, a plurality of limit seats are installed on the inner side of the mounting ring, the inner side of the cover plate is slidably connected to a limit sleeve, the outer periphery of the limit sleeve is sleeved with a switch spring body, the switch spring body is arranged between the top column and the limit seat, and the limit sleeve is fixedly connected to the top column once it is away from the limit seat.

[0012] Preferably, a sensor is provided at one end of the top column close to the limit seat, the middle part of the end of the limit sleeve away from the top column is slidably connected to the limit rod, and the end of the limit rod away from the top column is fixedly connected to the inner side wall of the mounting ring.

[0013] Preferably, a switch spring fatigue failure degree testing method comprises the following testing steps: S1. In actual use, people first start the stepper motor, and drive the threaded rod to rotate through the work of the stepper motor. When the threaded rod rotates, it will drive the threaded block to move up and down. When the threaded rod rotates clockwise, the threaded block will be driven to rise. Conversely, when the threaded rod rotates counterclockwise, the threaded block will be driven to fall. By first rotating the threaded rod counterclockwise, the threaded block uses the support rod to drive the sliding rod to retract, so that the elastic plate shrinks inward. At this time, the top column and the limit sleeve are removed from the limit rod, and then the switch spring body to be tested is sleeved on the outer periphery of the limit sleeve, and then the limit sleeve is clamped back on the limit rod; S2. After the switch spring body is installed, start the stepper motor again, adjust the extension length of each slide rod through the threaded rod, drive the elastic plate to deform synchronously through the top arc at the end of the slide rod, change the curvature of the elastic plate, and complete the fatigue data test of the switch spring body under different compression coefficients; S3, start the mounting seat, drive the driving gear to rotate through the mounting seat, drive the gear ring meshing with it to rotate through the driving gear, when the gear ring rotates, it will drive the connecting disk to rotate synchronously through the rotating sleeve, drive the fixed disk and the fixed block 1 and the elastic plate to rotate synchronously through the fixed bracket and the fixed column, when the elastic plate and the fixed block 1 rotate, they will press the contacting top column, so that the switch spring body on each limit sleeve will be compressed, and the fatigue test of the switch spring body will be realized; S4. When the switch spring body is subjected to a compression fatigue test, the double-headed motor is started, the rotating shaft is driven to rotate by the double-headed motor, and the driving gear is driven to rotate by the rotating shaft. When the rotating shaft rotates, the fixed block 2 and the limit plate are driven to rotate synchronously through the tooth groove; S5. When the limit plate rotates, the distance between the elastic plate and the top arc is adjusted through the guide rod via the guide groove on the limit plate, so that during fatigue testing, the curvature and position of the elastic plate will change, simulating the situation that the force applied by people to press the switch is not fixed during use.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When the switch spring body is installed, people can start the stepper motor again and adjust the extension length of each slide rod through the threaded rod. The top arc at the end of the slide rod can drive the elastic plate to deform synchronously, thereby changing the curvature of the elastic plate, so that people can test the fatigue data of the switch spring body under different compression coefficients, making the test data more comprehensive. At the same time, people can synchronously adjust the compression amount of the switch spring body during the test, which is beneficial to people's experimental process and reduces the time wasted in shutdown debugging.

[0015] In actual use, people can start the mounting seat, and the mounting seat can drive the driving gear to rotate, and the driving gear can drive the gear ring meshing with it to rotate, and when the gear ring rotates, the connecting disk can be driven to rotate synchronously through the rotating sleeve, and the fixed bracket and the fixed column can drive the fixed disk, the fixed block 1 and the elastic plate to rotate synchronously, and when the elastic plate and the fixed block 1 rotate, the contacting top column will be pressed, so that the switch spring body on each limit sleeve will be compressed, thereby realizing fatigue testing of the switch spring body, and through the design of the elastic plate and the fixed block 1, when the connecting disk rotates one circle, the switch spring body can undergo four compression and rebound processes, which is more efficient than the traditional cam compression test mechanism and is more conducive to actual use. At the same time, during the test, the elastic plate can be supported by the sliding rod and the top arc, thereby avoiding deformation during use and affecting the test work.

[0016] When the switch spring body is subjected to a compression fatigue test, the double-headed motor can drive the rotating shaft to rotate, and the rotating shaft can drive the driving gear to rotate. When the rotating shaft rotates, the fixed block 2 and the limit plate can be driven to rotate synchronously through the tooth groove. When the limit plate rotates, the guide groove on the limit plate can be used to adjust the distance between the elastic plate and the top arc through the guide rod, so that when the fatigue test is performed, the curvature and position of the elastic plate will change, thereby simulating the actual situation that the force people use to press the switch is not fixed during use, so that the test data of the switch spring body can be more consistent with the actual data, making the test results more accurate and more valuable for reference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view three-dimensional structural schematic diagram of a switch spring fatigue failure degree testing device and method of the present invention; Figure 2 It is a schematic top view of the partial structure of a switch spring fatigue failure degree testing device and method of the present invention; Figure 3 It is a schematic diagram of the internal structure of the bottom bin of a switch spring fatigue failure degree testing device and method of the present invention; Figure 4 It is a partial structural schematic diagram of a limit sleeve of a switch spring fatigue failure degree testing device and method of the present invention; Figure 5 It is a schematic diagram of the local structure of the threaded rod of a switch spring fatigue failure degree testing device and method of the present invention; Figure 6 It is a partial structural schematic diagram of the gear ring of a switch spring fatigue failure degree testing device and method of the present invention; Figure 7It is a schematic diagram of the local structure of the limit groove of a switch spring fatigue failure degree testing device and method of the present invention; Figure 8 The present invention is a schematic diagram of the local structure of a guide groove of a switch spring fatigue failure degree testing device and method.

[0018] 1. Spring fatigue test device; 101. End cover; 102. Bottom bin; 103. Switch spring body; 104. Cover plate; 105. Limit seat; 106. Fixed plate; 107. Elastic plate; 108. Fixed block 1; 109. Fixed column; 110. Mounting ring; 111. Fixed bracket; 112. Top column; 113. Top arc; 114. Driving gear; 115. Servo motor; 116. Mounting seat; 117. Rotating sleeve; 118. Gear ring; 119. Connecting plate; 1 20. Limit rod; 121. Limit sleeve; 122. Sensor; 123. Threaded rod; 124. Sliding rod; 125. Stepping motor; 126. Rotating seat; 127. Limit bending rod; 128. Limit plate; 129. Turntable; 130. Support rod; 131. Driving gear; 132. Fixed sleeve; 133. Guide rod; 134. Limit groove; 135. Rotating shaft; 136. Tooth groove; 137. Guide groove; 138. Connecting block; 139. Fixed block II; 140. Threaded block. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] like Figure 1-Figure 8 The switch spring fatigue failure degree test device shown in the figure includes a spring fatigue test device 1, which includes a bottom bin 102, a servo motor 115 is arranged inside the bottom bin 102, the servo motor 115 is installed inside the mounting seat 116, and the servo motor 115 is installed on one side of the middle part of the bottom bin 102. The top driving end of the servo motor 115 is fixedly connected to a driving gear 114, and one side of the driving gear 114 is meshedly connected to a gear ring 118, and the gear ring 118 is fixedly connected to the lower part of the outer periphery of a rotating sleeve 117, and the rotating sleeve The cylinder 117 is fixedly connected to the middle of the bottom end of the connecting disk 119, and a plurality of fixing brackets 111 are fixedly connected to the outer periphery of the connecting disk 119. The ends of the fixing brackets 111 away from the connecting disk 119 are fixedly connected to the fixing blocks 108. Elastic plates 107 are arranged between the fixing blocks 108. Both ends of the elastic plates 107 are slidably connected to the limiting grooves 134. The limiting grooves 134 are arranged at both ends of the fixing blocks 108. The upper parts of the fixing brackets 111 are provided with fixing columns 109, and the fixing columns 109 are fixedly connected to the outer periphery of the fixing disk 106. Furthermore, in the specific implementation, in actual use, people can first start the stepper motor 125, and the work of the stepper motor 125 can drive the threaded rod 123 to rotate. When the threaded rod 123 rotates, it will drive the threaded block 140 to move up and down. When the threaded rod 123 rotates clockwise, the threaded block 140 will be driven to rise, and vice versa, when the threaded rod 123 rotates counterclockwise, the threaded block 140 will be driven to fall. By first rotating the threaded rod 123 counterclockwise, the threaded block 140 can use the support rod 130 to drive the sliding rod 124 to retract, so that the elastic plate 107 can be retracted inwardly. At this time, it is convenient for people to remove the top column 112 and the limiting sleeve 121 from the limiting rod 120, and then people can put the switch spring body 103 to be tested on the outer periphery of the limiting sleeve 121, and then clamp the limiting sleeve 121 back onto the limiting rod 120.

[0021] Among them, a stepper motor 125 is installed in the middle of the fixed disk 106, and a threaded rod 123 is fixedly connected to the bottom driving end of the stepper motor 125, and a turntable 129 is fixedly connected to the bottom of the threaded rod 123. The turntable 129 is rotatably connected to the middle part of the connecting disk 119, and a threaded block 140 is threadedly connected to the outer periphery of the stepper motor 125. The outer periphery of the threaded block 140 is rotatably connected to a plurality of support rods 130 through a rotating seat 126. The ends of the support rods 130 away from the threaded block 140 are rotatably connected to the bottom of the sliding rod 124 through the rotating seat 126. The sliding rods 124 are slidably connected to the outer periphery of the fixed disk 106, and the ends of the sliding rods 124 away from the fixed disk 106 are fixedly connected to the top arc 113; Furthermore, in a specific implementation, after the switch spring body 103 is installed, people can start the stepper motor 125 again, and adjust the extension length of each slide rod 124 through the threaded rod 123. The top arc 113 at the end of the slide rod 124 can drive the elastic plate 107 to deform synchronously, thereby changing the curvature of the elastic plate 107, so that people can test the fatigue data of the switch spring body 103 under different compression coefficients, so that the test data can be more comprehensive. At the same time, people can synchronously adjust the compression amount of the switch spring body 103 during the test, which is beneficial to people's experimental process and reduces the time wasted in downtime and debugging.

[0022] Among them, a double-headed motor is installed in the middle of one end of the sliding rod 124 close to the top arc 113, and the upper and lower driving ends of the double-headed motor are fixedly connected with a rotating shaft 135, and the rotating shaft 135 is rotatably connected to the sliding rod 124. The upper and lower parts of the rotating shaft 135 are fixedly connected to the driving gear 131, and the side of the driving gear 131 away from the fixed plate 106 is meshed and connected with a tooth groove 136, and the tooth groove 136 is arranged on the outer periphery of the fixed block 139, and the fixed block 139 is fixedly connected to the middle part of one end of the limiting plate 128 close to the sliding rod 124. The limiting plate 128 and the fixed block 139 are rotatably connected to the outer periphery of the vertical section of the limiting bent rod 127. The ends of the limit bending rods 127 close to the slide rod 124 are all engaged in the connection block 138, and the connection blocks 138 are all fixedly connected to the upper and lower sides of the middle part of one end of the top arc 113 close to the fixed disk 106, and the ends of the limit bending rods 127 away from the slide rod 124 are all slidably connected to the inside of the fixed sleeve 132, and the fixed sleeve 132 is fixedly connected to the upper and lower sides of the middle part of one end of the elastic plate 107 close to the fixed disk 106, and the end of the limit disk 128 close to the slide rod 124 is provided with a guide groove 137, and the guide groove 137 is slidably connected with the guide rod 133, and the ends of the guide rod 133 away from the guide groove 137 are slidably connected to the upper and lower sides of the middle part of one end of the elastic plate 107 close to the fixed disk 106; Furthermore, in a specific implementation, when the switch spring body 103 is subjected to a compression fatigue test, people can start the double-headed motor, and the double-headed motor can drive the rotating shaft 135 to rotate, and the rotating shaft 135 can drive the driving gear 131 to rotate. When the rotating shaft 135 rotates, the fixed block 139 and the limit plate 128 can be driven to rotate synchronously through the tooth groove 136. When the limit plate 128 rotates, the guide groove 137 on the limit plate 128 can be used to adjust the distance between the elastic plate 107 and the top arc 113 through the guide rod 133, so that when the fatigue test is performed, the curvature and position of the elastic plate 107 will change, thereby simulating the actual situation that the force people use to press the switch is not fixed during use, so that the test data of the switch spring body 103 can be more consistent with the actual data, making the test results more accurate and more valuable for reference.

[0023] The rotating sleeve 117 is rotatably connected to the middle of the mounting plate, the mounting plate is fixedly connected to the middle of the bottom bin 102, the top of the bottom bin 102 is fixedly connected to a cover plate 104, the middle of the cover plate 104 is provided with an opening, the top of the cover plate 104 is fixedly connected to a mounting ring 110, the top of the cover plate 104 is clamped with an end cap 101 through the mounting ring 110, and the end cap 101 is made of a transparent material; Furthermore, in a specific implementation, the elastic plate 107 can be supported by the slide rod 124 and the top arc 113 during testing, thereby preventing 1107 from deforming during use and affecting the testing work. At the same time, in actual use, the transparent end cover 101 can facilitate people to observe the testing conditions of the switch spring body 103.

[0024] Among them, a plurality of limit seats 105 are installed on the inner side of the mounting ring 110, and the inner side of the cover plate 104 is slidably connected to the limit sleeve 121, and the outer circumference of the limit sleeve 121 is sleeved with the switch spring body 103, and the switch spring body 103 is arranged between the top column 112 and the limit seat 105. The limit sleeve 121 is fixedly connected with the top column 112 once it is away from the limit seat 105, and the top column 112 is provided with a sensor 122 at one end close to the limit seat 105. The middle part of the end of the limit sleeve 121 away from the top column 112 is slidably connected to the limit rod 120, and the end of the limit rod 120 away from the top column 112 is fixedly connected to the inner wall of the mounting ring 110; Furthermore, in the specific implementation, in actual use, people can start the mounting seat 116, and the mounting seat 116 can drive the driving gear 114 to rotate, and the driving gear 114 can drive the gear ring 118 meshing with it to rotate, and when the gear ring 118 rotates, it will drive the connecting plate 119 to rotate synchronously through the rotating sleeve 117, and the fixing plate 106, the fixing block 108 and the elastic plate 107 can be driven to rotate synchronously through the fixing bracket 111 and the fixing column 109, and when the elastic plate 107 and the fixing block 108 rotate, the contacting top column 112 will be rotated. The pressure will compress the switch spring bodies 103 on each limiting sleeve 121, thereby realizing fatigue testing of the switch spring bodies 103. The design of the elastic plate 107 and the fixing block 108 allows the switch spring bodies 103 to undergo four compression and rebound processes when the connecting disk 119 rotates one circle. Compared with the traditional cam compression test mechanism, the efficiency is higher and is more conducive to practical use. During the actual test, the sensor 122 can be used to sense the rebound force of the switch spring body 103 after compression, which is conducive to supplementing the test data of the switch spring body 103.

[0025] Among them, a switch spring fatigue failure degree testing method includes the following testing steps: S1. In actual use, people first start the stepper motor 125, and the stepper motor 125 drives the threaded rod 123 to rotate. When the threaded rod 123 rotates, it drives the threaded block 140 to move up and down. When the threaded rod 123 rotates clockwise, the threaded block 140 is driven to rise. Conversely, when the threaded rod 123 rotates counterclockwise, the threaded block 140 is driven to fall. By first rotating the threaded rod 123 counterclockwise, the threaded block 140 uses the support rod 130 to drive the sliding rod 124 to retract, so that the elastic plate 107 is retracted inwardly. At this time, the top column 112 and the limiting sleeve 121 are removed from the limiting rod 120, and then the switch spring body 103 to be tested is sleeved on the outer periphery of the limiting sleeve 121, and then the limiting sleeve 121 is clamped back onto the limiting rod 120; S2. After the switch spring body 103 is installed, the stepper motor 125 is started again, and the extension length of each slide rod 124 is adjusted through the threaded rod 123. The top arc 113 at the end of the slide rod 124 drives the elastic plate 107 to deform synchronously, and the curvature of the elastic plate 107 is changed, so as to complete the fatigue data test of the switch spring body 103 under different compression coefficients; S3, start the mounting seat 116, drive the driving gear 114 to rotate through the mounting seat 116, drive the gear ring 118 meshing with it to rotate through the driving gear 114, when the gear ring 118 rotates, it will drive the connecting disk 119 to rotate synchronously through the rotating sleeve 117, drive the fixing disk 106 and the fixing block 108 and the elastic plate 107 to rotate synchronously through the fixing bracket 111 and the fixing column 109, when the elastic plate 107 and the fixing block 108 rotate, they will press the contacting top column 112, so that the switch spring body 103 on each limiting sleeve 121 will be compressed, and the fatigue test of the switch spring body 103 will be realized; S4. When the switch spring body 103 is subjected to a compression fatigue test, the double-headed motor is started, and the rotating shaft 135 is driven to rotate by the double-headed motor, and the driving gear 131 is driven to rotate by the rotating shaft 135. When the rotating shaft 135 rotates, the fixed block 139 and the limit plate 128 are driven to rotate synchronously through the tooth groove 136; S5. When the limit plate 128 rotates, the distance between the elastic plate 107 and the top arc 113 is adjusted through the guide groove 137 on the limit plate 128 through the guide rod 133, so that when the fatigue test is performed, the curvature and position of the elastic plate 107 will change, simulating the situation that the force people use to press the switch is not fixed during use.

[0026] Working principle: In actual use, people can first start the stepper motor 125, and the stepper motor 125 can drive the threaded rod 123 to rotate. When the threaded rod 123 rotates, it will drive the threaded block 140 to move up and down. When the threaded rod 123 rotates clockwise, the threaded block 140 will be driven to rise, and vice versa, when the threaded rod 123 rotates counterclockwise, the threaded block 140 will be driven to fall. By first rotating the threaded rod 123 counterclockwise, the threaded block 140 can use the support rod 130 to drive the sliding rod 124 to retract, so that the elastic plate 107 can be retracted inwardly. At this time, it is convenient for people to remove the top column 112 and the limiting sleeve 121 from the limiting rod 120, and then people can put the switch spring body 103 to be tested The limit sleeve 121 is set to the outer periphery of the limit sleeve 121, and then the limit sleeve 121 is clamped back on the limit rod 120. When the switch spring body 103 is installed, people can start the stepper motor 125 again, and adjust the extension length of each slide rod 124 through the threaded rod 123. The top arc 113 at the end of the slide rod 124 can drive the elastic plate 107 to deform synchronously, so as to change the curvature of the elastic plate 107, so that people can test the fatigue data of the switch spring body 103 under different compression coefficients, so that the test data can be more comprehensive. At the same time, people can synchronously adjust the compression amount of the switch spring body 103 during the test, which is beneficial to people's experimental process and reduces the time wasted in shutdown debugging. In actual use, people can The mounting seat 116 can be started, and the driving gear 114 can be driven to rotate through the mounting seat 116, and the gear ring 118 meshing therewith can be driven to rotate through the driving gear 114. When the gear ring 118 rotates, the connecting plate 119 can be driven to rotate synchronously through the rotating sleeve 117. The fixing plate 111 and the fixing column 109 can drive the fixing plate 106, the fixing block 108 and the elastic plate 107 to rotate synchronously. When the elastic plate 107 and the fixing block 108 rotate, the contacting top column 112 is pressed, so that the switch spring body 103 on each limiting sleeve 121 is compressed, so that the fatigue test of the switch spring body 103 can be realized. The design of the elastic plate 107 and the fixing block 108 makes it possible to make the connecting plate 119 rotate synchronously. When the receiving plate 119 rotates one circle, the switch spring body 103 can undergo four compression and rebound processes. Compared with the traditional cam compression test mechanism, it is more efficient and conducive to practical use. At the same time, during the test, the elastic plate 107 can be supported by the slide bar 124 and the top arc 113, so as to avoid deformation of 1107 during use and affect the test work. At the same time, when the switch spring body 103 is subjected to a compression fatigue test, people can start the double-headed motor, and the double-headed motor can drive the rotating shaft 135 to rotate, and the rotating shaft 135 can drive the driving gear 131 to rotate. When the rotating shaft 135 rotates, it will drive the fixed block 139 and the limit plate 128 to rotate synchronously through the tooth groove 136. When the limit plate 128 rotates,The guide groove 137 on the limit plate 128 can adjust the distance between the elastic plate 107 and the top arc 113 through the guide rod 133, so that when the fatigue test is performed, the curvature and position of the elastic plate 107 will change, so as to simulate the actual situation that the force used by people to press the switch is not fixed during use, so that the test data of the switch spring body 103 can be more consistent with the actual data, making the test results more accurate and more valuable for reference.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A switch spring fatigue failure degree testing device, comprising a spring fatigue testing device (1), characterized in that: The spring fatigue testing device (1) comprises a bottom bin (102), a servo motor (115) is arranged inside the bottom bin (102), the servo motor (115) is mounted inside a mounting seat (116), the servo motor (115) is mounted on one side of the middle part of the bottom bin (102), a driving gear (114) is fixedly connected to the top driving end of the servo motor (115), a gear ring (118) is meshedly connected to one side of the driving gear (114), the gear ring (118) is fixedly connected to the lower part of the outer periphery of a rotating sleeve (117), and the rotating sleeve (117) is fixedly connected to a connecting plate (119). ) at the middle of the bottom end, a plurality of fixed brackets (111) are fixedly connected to the periphery of the connecting disk (119), one end of the fixed bracket (111) away from the connecting disk (119) is fixedly connected to a fixed block (108), an elastic plate (107) is arranged between the fixed blocks (108), both ends of the elastic plate (107) are slidably connected to the limit groove (134), the limit groove (134) is opened at both ends of the fixed block (108), and a fixed column (109) is arranged on the upper part of the fixed bracket (111), and the fixed column (109) is fixedly connected to the periphery of the fixing disk (106).

2. A switch spring fatigue failure degree testing device according to claim 1, characterized in that: A stepper motor (125) is installed in the middle of the fixed disk (106); a threaded rod (123) is fixedly connected to the bottom driving end of the stepper motor (125); a rotating disk (129) is fixedly connected to the bottom of the threaded rod (123); the rotating disk (129) is rotatably connected to the middle of the connecting disk (119); and a threaded block (140) is threadedly connected to the outer periphery of the stepper motor (125).

3. A switch spring fatigue failure degree testing device according to claim 2, characterized in that: The outer periphery of the threaded block (140) is rotatably connected to a plurality of support rods (130) via a rotating seat (126); one end of the support rods (130) away from the threaded block (140) is rotatably connected to the bottom of a sliding rod (124) via a rotating seat (126); the sliding rods (124) are slidably connected to the outer periphery of a fixed disk (106); one end of the sliding rods (124) away from the fixed disk (106) is fixedly connected to a top arc (113).

4. A switch spring fatigue failure degree testing device according to claim 3, characterized in that: A double-headed motor is installed in the middle of one end of the slide bar (124) close to the top arc (113), and the upper and lower driving ends of the double-headed motor are fixedly connected to a rotating shaft (135), and the rotating shaft (135) is rotatably connected to the slide bar (124). The upper and lower parts of the rotating shaft (135) are fixedly connected to a driving gear (131), and the side of the driving gear (131) away from the fixed plate (106) is meshed with a tooth groove (136), and the tooth groove (136) is provided on the fixed plate (106). The outer periphery of the second fixed block (139), the second fixed block (139) is fixedly connected to the middle of one end of the limit plate (128) close to the sliding rod (124), the limit plate (128) and the second fixed block (139) are rotatably connected to the outer periphery of the vertical section of the limit bending rod (127), one end of the limit bending rod (127) close to the sliding rod (124) is engaged in the inside of the connecting block (138), and the connecting block (138) is fixedly connected to the upper and lower sides of the middle of one end of the top arc (113) close to the fixed plate (106).

5. A switch spring fatigue failure degree testing device according to claim 1, characterized in that: The rotating sleeve (117) is rotatably connected to the middle of the mounting plate, and the mounting plate is fixedly connected to the middle of the bottom bin (102).

6. A switch spring fatigue failure degree testing device according to claim 1, characterized in that: A cover plate (104) is fixedly connected to the top of the bottom bin (102); an opening is provided in the middle of the cover plate (104); a mounting ring (110) is fixedly connected to the top of the cover plate (104); an end cover (101) is engaged with the top of the cover plate (104) via the mounting ring (110); and the end cover (101) is made of a transparent material.

7. A switch spring fatigue failure degree testing device according to claim 4, characterized in that: The end of the limit bending rod (127) away from the sliding rod (124) is slidably connected to the inside of the fixed sleeve (132), and the fixed sleeve (132) is fixedly connected to the upper and lower sides of the middle part of one end of the elastic plate (107) close to the fixed plate (106). The end of the limit plate (128) close to the sliding rod (124) is provided with a guide groove (137), and the inside of the guide groove (137) is slidably connected with a guide rod (133), and the end of the guide rod (133) away from the guide groove (137) is slidably connected to the upper and lower sides of the middle part of one end of the elastic plate (107) close to the fixed plate (106).

8. A switch spring fatigue failure degree testing device according to claim 6, characterized in that: A plurality of limit seats (105) are installed on the inner side of the mounting ring (110), and the inner side of the cover plate (104) is slidably connected to a limit sleeve (121), and the outer circumference of the limit sleeve (121) is sleeved with a switch spring body (103), and the switch spring body (103) is arranged between the top column (112) and the limit seat (105), and the limit sleeve (121) is fixedly connected to the top column (112) away from the limit seat (105).

9. A switch spring fatigue failure degree testing device according to claim 8, characterized in that: A sensor (122) is provided at one end of the top column (112) close to the limit seat (105), and a middle portion of one end of the limit sleeve (121) away from the top column (112) is slidably connected to a limit rod (120), and one end of the limit rod (120) away from the top column (112) is fixedly connected to the inner wall of the mounting ring (110).

10. A switch spring fatigue failure degree testing method, applied to a switch spring fatigue failure degree testing device as claimed in any one of claims 1 to 9, characterized in that: The test steps include: S1. In actual use, people first start the stepper motor (125), and the stepper motor (125) drives the threaded rod (123) to rotate. When the threaded rod (123) rotates, it drives the threaded block (140) to move up and down. When the threaded rod (123) rotates clockwise, the threaded block (140) is driven to rise. Conversely, when the threaded rod (123) rotates counterclockwise, the threaded block (140) is driven to fall. The threaded rod (123) rotates counterclockwise, and the threaded block (140) and the support rod (130) are used to drive the slide rod (124) to retract, so that the elastic plate (107) is retracted inwardly. At this time, the top column (112) and the limiting sleeve (121) are removed from the limiting rod (120), and then the switch spring body (103) to be tested is sleeved on the outer periphery of the limiting sleeve (121), and then the limiting sleeve (121) is clamped back onto the limiting rod (120); S2. After the switch spring body (103) is installed, the stepper motor (125) is started again, and the extension length of each slide rod (124) is adjusted through the threaded rod (123). The top arc (113) at the end of the slide rod (124) drives the elastic plate (107) to deform synchronously, and the curvature of the elastic plate (107) is changed, so as to complete the fatigue data test of the switch spring body (103) under different compression coefficients; S3, starting the mounting seat (116), driving the driving gear (114) to rotate through the mounting seat (116), driving the gear ring (118) meshing with the gear ring (114) to rotate, when the gear ring (118) rotates, it drives the connecting disk (119) to rotate synchronously through the rotating sleeve (117), drives the fixed disk (106) and the fixed block (108) and the elastic plate (107) to rotate synchronously through the fixed bracket (111) and the fixed column (109), when the elastic plate (107) and the fixed block (108) rotate, they press the contacting top column (112) to compress the switch spring body (103) on each limiting sleeve (121), thereby achieving fatigue testing of the switch spring body (103); S4. When the switch spring body (103) is subjected to a compression fatigue test, the double-headed motor is started, the rotating shaft (135) is driven to rotate by the double-headed motor, and the driving gear (131) is driven to rotate by the rotating shaft (135). When the rotating shaft (135) rotates, the fixed block 2 (139) and the limit plate (128) are driven to rotate synchronously through the tooth groove (136); S5. When the limit plate (128) rotates, the distance between the elastic plate (107) and the top arc (113) is adjusted through the guide groove (137) on the limit plate (128) through the guide rod (133), so that when the fatigue test is performed, the curvature and position of the elastic plate (107) will change, simulating the situation that the force used by people to press the switch is not fixed during use.

Images