A thin-film switch performance detection device

Abstract

The present invention relates to the technical field of thin-film switch detection, and specifically relates to a performance detection device for thin-film switches, including a limit placement table, an elastic pressing device, a docking seal, a continuous contact device, a simulated water delivery device, and a simulated heating device. The limit placement table is used for limiting and placing the thin-film switch. The elastic pressing device is installed on the top of the limit placement table. The continuous contact device is installed at the movable end of the elastic pressing device. The continuous contact device is used for continuously triggering the control keys of the thin-film switch. The docking seal is installed at the bottom of the continuous contact device. The docking seal is used for sealing and fitting the surface of the thin-film switch. The simulated water delivery device is installed on the elastic pressing device, and the output end of the simulated water delivery device is connected to the docking seal. The simulated heating device is installed inside the continuous contact device. The present invention effectively ensures the reliability and stability of product production.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film switch detection, and specifically relates to a thin film switch performance detection device. Background Art

[0002] A thin film switch is an operating system integrating button functions, indicating elements, and instrument panels. It consists of four parts: a panel, an upper circuit, an isolation layer, and a lower circuit. When the thin film switch is pressed, the contacts of the upper circuit deform downward and contact the plates of the lower circuit to conduct. After the finger is released, the contacts of the upper circuit bounce back and the circuit is disconnected, triggering a signal in the loop. The thin film switch has a rigorous structure, beautiful appearance, and good sealing performance. It has the characteristics of moisture-proof and long service life. It is widely used in the fields of electronic communication, electronic measurement instruments, industrial control, medical equipment, automotive industry, intelligent toys, household appliances, etc.

[0003] Chinese Patent CN213398839U discloses a thin film switch performance detection device, which solves the disadvantages existing in the prior art. It includes a detection seat. One side of the detection seat is fixed with a connecting plate through a countersunk head bolt. An operating handle is movably connected to the connecting plate through a pin shaft. The end of the operating handle is movably hinged with a linkage rod. The other end of the linkage rod is movably hinged with a pressing rod. The bottom of the pressing rod is connected with a mounting plate through a hexagonal screw. Through the settings of structures such as the mounting plate, the test plate, the first connecting rod, the second connecting rod, and the fixture seat, after the personnel apply force, the upper mounting plate drives the test plate to approach the workpiece. At the same time, the first connecting rod and the second connecting rod act, and the fixture plate with the product is received into the inner groove to achieve rapid detection. After the detection is completed, the test plate is lifted, and the fixture seat can automatically slide out of the detection seat, facilitating the personnel to pick up the parts and improving the detection efficiency.

[0004] The above technical solution mainly focuses on the pressing detection of the button function, and realizes the detection of the operation response of the thin film switch through the design of the mechanical structure, effectively improving the detection efficiency. However, when facing thin film switches used outdoors or in harsh environments, these devices often neglect the comprehensive evaluation of their adaptability to the environment. This is one of the key factors for the thin film switch to maintain normal functions and extend its service life in harsh environments. If the adaptability of the thin film switch is poor, external substances such as moisture and dust are likely to penetrate into the interior of the thin film switch, resulting in serious problems such as short circuits, contact corrosion, and function failure. Therefore, for thin film switches applied outdoors or in harsh environments, the detection of their adaptability is an essential link. Summary of the Invention

[0005] In view of the above problems, a thin film switch performance detection device is provided. By integrating a limit placement table, an elastic pressing device, a docking seal, a continuous contact device, a simulated water supply device, and a simulated heating device, it can comprehensively simulate various usage scenarios of the thin film switch outdoors or in harsh environments, ensuring the reliability and stability of product production.

[0006] To solve the problems of the prior art, the present invention provides a thin film switch performance detection device, including a limit placement table, an elastic pressing device, a docking seal, a continuous contact device, a simulated water delivery device, and a simulated heating device. The limit placement table is used for limit placement of the thin film switch. The elastic pressing device is installed on the top of the limit placement table. The continuous contact device is installed at the movable end of the elastic pressing device. The continuous contact device is used for continuously triggering the control keys of the thin film switch. The docking seal is installed at the bottom of the continuous contact device. The docking seal is used for sealing and fitting the surface of the thin film switch. The simulated water delivery device is installed on the elastic pressing device. The output end of the simulated water delivery device is connected to the docking seal. The simulated heating device is installed inside the continuous contact device.

[0007] Preferably, the limit placement table includes a limit sliding table disposed directly below the elastic pressing device. A sliding mounting frame is installed on the limit sliding table. The sliding mounting frame slides horizontally with the limit sliding table. A limit placement core is installed inside the sliding mounting frame. An induction slot is installed on the side of the sliding mounting frame. The induction slot is used for connecting the transmission end of the thin film switch.

[0008] Preferably, a thin film switch placement groove is provided inside the limit placement core. A plurality of adsorption air holes are provided inside the thin film switch placement groove. The adsorption air holes are used for adsorbing the thin film switch.

[0009] Preferably, the elastic pressing device includes a mounting bracket installed on the limit placement table. A moving push plate is installed on the mounting bracket. A buffer pressing device for elastically pressing the moving push plate is also installed on the mounting bracket.

[0010] Preferably, a connecting hopper is provided at the top of the docking seal. The connecting hopper communicates with the continuous contact device. Spraying ports and suction ports are provided on the inner wall of the docking seal. A sealing ring is installed at the bottom of the docking seal.

[0011] Preferably, the continuous contact device includes a fixed mounting tool installed on the elastic pressing device. A docking mounting port for installing the connecting hopper is provided at the bottom of the fixed mounting tool. A reset mounting plate is provided inside the fixed mounting tool. An eccentric pressing roller is also installed inside the fixed mounting tool. The eccentric pressing roller abuts against the top of the reset mounting plate. An elastic pressing rod is installed below the reset mounting plate. A pressing abutting head is installed on the elastic pressing rod. The pressing abutting head is used for abutting against the control keys of the thin film switch.

[0012] Preferably, the reset mounting plate is covered with adjustment mounting holes. Installation guide posts are installed on both sides of the reset mounting plate. The installation guide posts are slidably connected to the reset mounting plate. The installation guide posts are fixedly connected to the fixed mounting tool. A third pressing spring is also installed between the installation guide posts and the fixed mounting tool.

[0013] Preferably, the pressing contact head includes a limiting sliding ring, the outer wall of the limiting sliding ring is slidably connected to the inner wall of the docking seal, the limiting sliding ring is connected to the elastic pressing rod, and the limiting sliding ring is covered with elastic abutting blocks.

[0014] Preferably, the simulated water delivery device includes a liquid storage tank installed on the elastic pressing device, a suction pump and a delivery pump are installed on the liquid storage tank, the output end of the delivery pump is connected to the spraying port of the docking seal, and the input end of the suction pump is connected to the suction port of the docking seal.

[0015] Preferably, the simulated heating device includes a mounting plate installed on the fixed mounting tool, a plurality of heating lamps are installed on the mounting plate, and a temperature detector is installed on the mounting plate.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] By integrating the limiting placement table, the elastic pressing device, the docking seal, the continuous contact device, the simulated water delivery device and the simulated heating device, it is possible to comprehensively simulate various usage scenarios of the membrane switch in outdoor or harsh environments. From continuous key trigger testing to moisture penetration simulation, and then to the test of high-temperature environment, this series of simulation detections ensures the stability and reliability of the membrane switch under different environmental conditions. This all-round and multi-level testing method effectively improves the overall quality and market adaptability of the membrane switch product, reduces the failure rate caused by environmental factors, and provides users with a more stable and reliable product experience. Description of the Drawings

[0018] Figure 1 is a three-dimensional schematic diagram of a membrane switch performance detection device Figure 1 .

[0019] Figure 2 is a plane cross-sectional view of a membrane switch performance detection device.

[0020] Figure 3 is a plane cross-sectional three-dimensional view of a membrane switch performance detection device.

[0021] Figure 4 is a three-dimensional schematic diagram of a membrane switch performance detection device Figure 2 .

[0022] Figure 5 is a three-dimensional schematic diagram of the movement state of the limiting placement table in a membrane switch performance detection device.

[0023] Figure 6 is an exploded view of a partial structure of the limiting placement table in a membrane switch performance detection device.

[0024] Figure 7 is Figure 6 a partial enlarged view of A in

[0025] Figure 8 It is a three-dimensional schematic diagram of a continuous contact device and a docking seal in a thin-film switch performance detection device Figure 1 .

[0026] Figure 9 It is a three-dimensional schematic diagram of a continuous contact device and a docking seal in a thin-film switch performance detection device Figure 2 .

[0027] Figure 10 It is a plan sectional three-dimensional view of a continuous contact device and a docking seal in a thin-film switch performance detection device.

[0028] The reference numerals in the figure are as follows

[0029] 1. Limit placement table; 11. Limit sliding table; 111. Magnetic attraction block; 112. Infrared sensor; 12. Sliding mounting rack; 121. Limit mounting groove; 122. Clamping mechanism; 123. Movable clamping plate; 124. Pulling handle; 125. First pressing spring; 13. Induction slot; 14. Limit placement core; 141. Thin-film switch placement groove; 1411. Adsorption air holes; 142. Limit card slot; 2. Elastic pressing device; 21. Mounting bracket; 22. Moving push plate; 23. Buffer pressing device; 231. Linear drive; 232. Pressing connection column; 233. Second pressing spring; 3. Docking seal; 31. Connecting hopper; 32. Spraying port; 33. Suction port; 34. Sealing ring; 4. Continuous contact device; 41. Fixed mounting tool; 42. Elastic pressing rod; 43. Reset mounting plate; 431. Adjusting mounting hole; 432. Mounting guide post; 433. Third pressing spring; 44. Eccentric pressing roller; 45. Rotary drive; 46. Pressing contact head; 461. Limit sliding ring; 462. Elastic contact block; 5. Simulated water delivery device; 51. Suction pump; 52. Delivery pump; 53. Liquid storage tank; 6. Simulated heating device; 61. Mounting plate; 62. Heating lamp; 63. Temperature detector; 7. Thin-film switch. Detailed implementation manners

[0030] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0031] See Figures 1 to 10As shown, a membrane switch performance detection device includes a limit placement table 1, an elastic pushing device 2, a docking seal 3, a continuous contact device 4, a simulated water supply device 5 and a simulated heating device 6. The limit placement table 1 is used for limiting the placement of the membrane switch 7, the elastic pushing device 2 is installed on the top of the limit placement table 1, the continuous contact device 4 is installed at the movable end of the elastic pushing device 2, the continuous contact device 4 is used to continuously trigger the control key of the membrane switch 7, the docking seal 3 is installed at the bottom of the continuous contact device 4, the docking seal 3 is used to seal and fit the surface of the membrane switch 7, the simulated water supply device 5 is installed on the elastic pushing device 2, the output end of the simulated water supply device 5 is connected to the docking seal 3, and the simulated heating device 6 is installed inside the continuous contact device 4.

[0032] The limit placement table 1 is used as the base of the entire detection equipment to accurately and firmly place the membrane switch 7 to be tested. The limit design ensures that the membrane switch 7 will not be displaced during the detection process, ensuring the accuracy and repeatability of the test. When the membrane switch 7 needs to be detected, the operator places the membrane switch 7 on the limit placement table 1, starts the elastic pushing device 2 to press downward, and under the drive of the elastic pushing device 2, the docking seal 3 and the surface of the sealed membrane switch 7 are in conflict. The docking seal 3 is tightly fitted with the surface of the membrane switch 7, so that the detection area forms a sealed environment. Through its good sealing performance, the influence of the external environment on the membrane switch 7 is effectively isolated. During the detection, the continuous touch device 4 is used to realize the continuous trigger detection of the control key of the membrane switch 7. At the same time, the simulated water delivery device 5 is installed on the elastic pushing device 2 to simulate the water penetration in the outdoor or harsh environment. Its output end is connected to the docking seal 3 to inject a certain amount of water into the sealed environment. During the detection process, the simulated water delivery device 5 injects water into the docking seal 3 at a preset rate and amount to simulate the working state of the membrane switch 7 in a humid environment. By monitoring the effect of moisture on the performance of the membrane switch 7, its moisture-proof performance is evaluated. The simulated heating device 6 is used to simulate the effect of a high temperature environment on the membrane switch 7. By controlling the power and temperature of the heating element, the working scenes under different temperature conditions are simulated. During the detection process, the simulated heating device 6 heats the membrane switch 7 according to a preset temperature curve to simulate its working state in a high temperature environment. By monitoring the effect of high temperature on the performance of the membrane switch 7, its high temperature resistance and thermal stability are evaluated. A comprehensive evaluation of the adaptability of the membrane switch 7 in outdoor or harsh environments is achieved. By simulating various harsh conditions in actual use, the reliability and stability of the membrane switch 7 in complex environments are ensured.

[0033] See also Figures 1 to 7As shown, the limit placement table 1 includes a limit slide table 11 disposed directly below the elastic pressing device 2. A sliding mounting frame 12 is installed on the limit slide table 11. The sliding mounting frame 12 slides horizontally with the limit slide table 11. A limit placement core 14 is installed inside the sliding mounting frame 12, and an induction slot 13 is installed on the side of the sliding mounting frame 12.

[0034] The induction slot 13 is used to connect the transmission end of the membrane switch 7 to facilitate the transmission of trigger information. On the side of the limit slide table 11, there are a magnetic attraction block 111 and an infrared sensor 112. The magnetic attraction block 111 is used to limit and adsorb the position of the sliding mounting frame 12, and the infrared sensor 112 is used to detect the position of the sliding mounting frame 12. Inside the sliding mounting frame 12, there is a limit mounting groove 121 for installing the limit placement core 14. On both sides of the sliding mounting frame 12, there are clamping mechanisms 122 for clamping and installing the limit placement core 14 to facilitate the quick disassembly and replacement of the limit placement core 14. The clamping mechanism 122 includes a movable clamping plate 123 slidably mounted on the sliding mounting frame 12. A pull handle 124 is installed on the movable clamping plate 123, and a first pressing spring 125 is also installed between the movable clamping plate 123 and the sliding mounting frame 12.

[0035] The operator first places the membrane switch 7 to be tested on the limit placement table 1. The sliding mounting frame 12 can slide horizontally along the limit slide table 11, and a limit placement core 14 is installed inside for precisely placing the membrane switch 7. An induction slot 13 is provided on the side of the sliding mounting frame 12 for connecting the transmission end of the membrane switch 7 to facilitate the subsequent transmission of trigger information. The magnetic attraction block 111 and the infrared sensor 112 are respectively used to limit and adsorb the position of the sliding mounting frame 12 and detect its precise position to ensure the stable positioning of the membrane switch 7 before detection. The elastic pressing device 2 starts to work and presses downward. During this process, the docking seal 3 contacts the control keys of the membrane switch 7 and closely adheres to the surface of the membrane switch 7 to form a sealed environment. The simulated water delivery device 5 starts to work, and through the connection between its output end and the docking seal 3, a certain amount of moisture is injected into the sealed environment. This process simulates the moisture penetration situation in outdoor or harsh environments to evaluate the moisture-proof performance of the membrane switch 7. At the same time, the simulated heating device 6 starts inside the continuous touch device 4, and the membrane switch 7 is heated according to a preset temperature curve. This step simulates the influence of a high-temperature environment on the membrane switch 7 to evaluate its high-temperature resistance and thermal stability. During the entire detection process, the continuous touch device 4 continuously triggers the control keys of the membrane switch 7, and the induction slot 13 transmits the trigger information to an external system for further analysis.

[0036] The operator can quickly disassemble and replace the limit placement core 14 through the clamping mechanism 122 for the next round of testing. The clamping mechanism 122 includes a movable clamping plate 123, a pull handle 124, and a first push spring 125, and the quick disassembly and assembly of the limit placement core 14 can be realized through simple operations.

[0037] See Figure 5 and Figure 6 As shown, the inside of the limit placement core 14 is provided with a membrane switch placement groove 141, and a plurality of adsorption air holes 1411 are arranged inside the membrane switch placement groove 141. The adsorption air holes 1411 are used to adsorb the membrane switch 7.

[0038] Limit clamping grooves 142 are arranged on both sides of the limit placement core 14.

[0039] The operator first places the membrane switch 7 to be tested in the membrane switch placement groove 141 inside the limit placement core 14. The membrane switch placement groove 141 is designed with a plurality of adsorption air holes 1411, and these air holes adsorb the membrane switch 7 through negative pressure or special materials to ensure that it will not shift during the detection process, further improving the accuracy and stability of the test.

[0040] The operator can quickly disassemble and replace the limit placement core 14 through the clamping mechanism 122. The clamping mechanism 122 includes a movable clamping plate 123, a pull handle 124, and a first push spring 125, and the quick disassembly and assembly of the limit placement core 14 can be realized through simple operations. The limit clamping grooves 142 on both sides of the limit placement core 14 are used to cooperate with the insertion of the movable clamping plate 123 to achieve limit clamping.

[0041] See Figures 1 to 4 As shown, the elastic push device 2 includes a mounting bracket 21 installed on the limit placement table 1. A moving push plate 22 is installed on the mounting bracket 21, and a buffer push device 23 for elastically pressing the moving push plate 22 is also installed on the mounting bracket 21.

[0042] The buffer push device 23 includes a linear driver 231 installed on the mounting bracket 21. A push connection column 232 is installed at the output end of the linear driver 231. The push connection column 232 is slidably connected to the moving push plate 22, and a second push spring 233 is installed between the push connection column 232 and the moving push plate 22.

[0043] When the detection program is started, the linear drive 231 receives a control signal and starts to work, and its output end pushes the pushing connection column 232 to move. The pushing connection column 232 drives the moving push plate 22 to move towards the membrane switch 7, and at the same time compresses the second pushing spring 233. Due to the existence of the second pushing spring 233, the moving push plate 22 can produce a certain elastic pressing effect when encountering resistance. With the continuous pushing of the linear drive 231, the moving push plate 22 will drive the docking seal 3 and the continuous contact device 4 to move towards the membrane switch 7 until the docking seal 3 is in close contact with the membrane switch 7, and a sealed environment is formed through the docking seal 3. At this time, the simulated water conveyance device 5 and the simulated heating device 6 can start to work, respectively simulating the effects of water penetration and high-temperature environment on the membrane switch 7.

[0044] See Figure 3 、 Figure 8 and 10 As shown, a connecting hopper 31 is provided at the top of the docking seal 3. The connecting hopper 31 is communicated with the continuous contact device 4. Spray ports 32 and suction ports 33 are provided on the inner wall of the docking seal 3. A sealing ring 34 is installed at the bottom of the docking seal 3.

[0045] Both the spray ports 32 and the suction ports 33 are communicated with the simulated water conveyance device 5.

[0046] During the test, when the docking seal 3 is attached to the surface of the membrane switch 7, a sealed connection is achieved through the sealing ring 34. Subsequently, according to the test requirements, the simulated water conveyance device 5 sprays corresponding moisture to the test area through the spray ports 32 to simulate the humid environmental conditions. Continuously detect the response of the membrane switch 7, such as resistance change, signal transmission stability, etc. After the test, the simulated water conveyance device 5 extracts the moisture in the docking seal 3 through the suction ports 33 to complete the cleaning of the test environment.

[0047] See Figure 3 、 Figure 8 、 Figure 9 and Figure 10 As shown, the continuous contact device 4 includes a fixed mounting tool 41 mounted on the elastic pressing device 2. A docking mounting port for mounting the connecting hopper 31 is provided at the bottom of the fixed mounting tool 41. A reset mounting plate 43 is provided inside the fixed mounting tool 41. An eccentric pressing roller 44 is also mounted inside the fixed mounting tool 41. The eccentric pressing roller 44 abuts against the top of the reset mounting plate 43. An elastic pressing rod 42 is mounted below the reset mounting plate 43. A pressing contact head 46 is mounted on the elastic pressing rod 42. The pressing contact head 46 is used to abut against the control key of the membrane switch 7.

[0048] The continuous contact device 4 further includes a rotary drive 45 for driving the eccentric pressing roller 44 to rotate.

[0049] When it is necessary to test the control keys of the membrane switch 7, the rotary driver 45 is started, driving the eccentric pressing roller 44 to rotate. Due to the eccentric design, the eccentric pressing roller 44 will generate a displacement in the up and down direction during rotation, thereby pushing the reset mounting plate 43 and the elastic pressing rod 42 below it downward. After the elastic pressing rod 42 receives the thrust, it uses its elastic characteristics to transmit the force to the pressing contact head 46. The pressing contact head 46, as the final executing component, directly contacts and simulates pressing the control keys of the membrane switch 7. This design makes the pressing action both forceful and have a certain buffering effect, avoiding damage to the membrane switch 7 that may be caused by direct rigid contact. After completing a pressing test, the rotary driver 45 reverses or stops working, and the eccentric pressing roller 44 returns to its initial position under the action of the reaction force of the reset mounting plate 43 and its own gravity. At the same time, the elastic pressing rod 42 pulls the pressing contact head 46 back to its original position to prepare for the next test. By controlling the operating parameters of the rotary driver 45, the pressing force, frequency, and duration of the pressing contact head 46 on the control keys of the membrane switch 7 can be precisely controlled, so as to simulate the operating conditions under different usage scenarios and comprehensively evaluate the performance of the membrane switch 7.

[0050] See Figures 8 to 10 As shown, the reset mounting plate 43 is covered with adjustment mounting holes 431. Installation guide columns 432 are installed on both sides of the reset mounting plate 43. The installation guide columns 432 are slidably connected to the reset mounting plate 43. The installation guide columns 432 are fixedly connected to the fixed mounting tool 41. A third pressing spring 433 is also installed between the installation guide columns 432 and the fixed mounting tool 41.

[0051] The reset mounting plate 43 is a key component in the continuous contact device 4, and is covered with adjustment mounting holes 431. These adjustment mounting holes 431 are used to fix or adjust the positions of other components. Mounting guide posts 432 are installed on both sides of the reset mounting plate 43. These mounting guide posts 432 are connected to the reset mounting plate 43 in a sliding manner to ensure that the reset mounting plate 43 can move smoothly in a specific direction when subjected to thrust. The mounting guide posts 432 not only support the reset mounting plate 43, but also provide precise guidance for the reset mounting plate 43 through its sliding connection characteristics. When the eccentric pressing roller 44 rotates and pushes the reset mounting plate 43, the mounting guide posts 432 ensure that the reset mounting plate 43 moves along a predetermined path to avoid deviation or shaking. A third push spring 433 is also installed between the mounting guide posts 432 and the fixed mounting device 41. This spring will be compressed when the reset mounting plate 43 is subjected to external force, storing elastic potential energy. When the external force disappears, the third push spring 433 will release its stored energy and push the reset mounting plate 43 to quickly return to the initial position. During the operation of the continuous touch device 4, the rotation of the eccentric pressing roller 44 pushes the reset mounting plate 43 to slide along the mounting guide column 432, and presses the control key of the membrane switch 7 by pressing the contact head 46. After the pressing is completed, the third pressing spring 433 releases energy, pushing the reset mounting plate 43 to quickly reset, preparing for the next pressing, thereby ensuring the accuracy and reliability of the continuous touch device 4 in testing the control key of the membrane switch 7.

[0052] See also Figures 8 to 10 As shown, the pressing contact head 46 includes a limiting slip ring 461 , the outer wall of the limiting slip ring 461 is slidably connected to the inner wall of the docking seal 3 , the limiting slip ring 461 is connected to the elastic pushing rod 42 , and the limiting slip ring 461 is covered with elastic contact blocks 462 .

[0053] The elastic abutment blocks 462 correspond to the control keys of the membrane switch 7 one by one.

[0054] The outer wall of the limit slip ring 461 is slidably connected to the inner wall of the docking seal 3 to ensure smooth movement without excessive friction during the pressing process. The elastic push rod 42 is connected to the limit slip ring 461 and is responsible for transmitting the thrust from the continuous contact device 4 to the limit slip ring 461, and then to the elastic resistance block 462 through the limit slip ring 461. The elastic resistance block 462 directly acts on the control key of the membrane switch 7 to simulate the pressing operation in actual use. These elastic resistance blocks 462 are distributed all over the limit slip ring 461 and correspond one by one to the control keys of the membrane switch 7 to ensure that each control key can be accurately pressed. Test.

[0055] When the continuous touch device 4 is driven to start rotating, the thrust generated by it is transmitted to the limit sliding ring 461 through the elastic pressing rod 42. Due to the sliding connection between the limit sliding ring 461 and the inner wall of the docking seal 3, the limit sliding ring 461 can move smoothly along a specific direction. As the limit sliding ring 461 moves, the elastic abutting blocks 462 on it also move accordingly and gradually approach and contact the control keys of the membrane switch 7. Since the elastic abutting blocks 462 have a certain elasticity, they can adapt to control keys of different shapes and sizes and ensure uniform pressing force during pressing. When the elastic abutting blocks 462 completely contact and press the control keys, the membrane switch 7 will trigger the corresponding circuit or function to achieve trigger detection. By controlling the operation cycle and parameters of the continuous touch device 4, continuous cyclic pressing of the pressing abutting head 46 can be achieved, thereby simulating long-term or high-frequency usage conditions to comprehensively evaluate the performance of the membrane switch 7. Precise, continuous and controllable pressing tests of the control keys of the membrane switch 7 are realized. This design not only improves the accuracy and reliability of the test, but also enhances the adaptability and flexibility of the device.

[0056] See Figures 1 to 4 As shown, the simulated water delivery device 5 includes a liquid storage tank 53 installed on the elastic pressing device 2. A suction pump 51 and a delivery pump 52 are installed on the liquid storage tank 53. The output end of the delivery pump 52 is connected to the spraying port 32 of the docking seal 3, and the input end of the suction pump 51 is connected to the suction port 33 of the docking seal 3.

[0057] Before the test starts, the liquid storage tank 53 is filled with an appropriate amount of test liquid. When it is necessary to simulate a humid environment, the delivery pump 52 is started to extract liquid from the liquid storage tank 53 and transport it through the pipeline to the spraying port 32 of the docking seal 3. The spraying port 32 evenly sprays the liquid on the surface of the membrane switch 7 to simulate the humid conditions in actual use. At the same time, the suction pump 51 can also be started as needed to recover or remove excess liquid through the suction port 33 of the docking seal 3. This function is particularly important during the test, which can prevent the accumulation of liquid from interfering with the test results and maintain the cleanliness and stability of the test environment. In addition, the type and concentration of the liquid in the liquid storage tank 53 can also be adjusted according to the test requirements. For example, when testing the waterproof performance of the membrane switch 7, liquids such as clean water or simulated rainwater can be used; when testing its corrosion resistance, liquids containing a certain concentration of corrosive agents may be required.

[0058] See Figure 2 and Figure 3 As shown, the simulated heating device 6 includes a mounting plate 61 installed on the fixed mounting fixture 41. A plurality of heating lamps 62 are installed on the mounting plate 61, and a temperature detector 63 is installed on the mounting plate 61.

[0059] When a heating environment needs to be simulated, the control system will activate the heating lamp 62. The heating lamp 62 starts to work, generating heat and radiating it to the mounting plate 61 and the membrane switch 7 thereon. As the heat accumulates, the temperature of the membrane switch 7 gradually rises, thus simulating the heating scenario in actual applications. During the heating process, the temperature detector 63 will continuously monitor and record the temperature data of the surrounding environment. These data will be transmitted to the control system and used as the basis for adjusting the working state of the heating lamp 62. If the temperature is too high or too low, the control system will correspondingly adjust the power of the heating lamp 62 or turn off some of the heating lamps 62 to ensure that the membrane switch 7 is tested within the preset temperature range. The temperature control of the simulation heating device 6 is achieved through the coordinated action of the control system and the temperature detector 63. The control system precisely adjusts the working state of the heating lamp 62 according to the preset test parameters and the temperature data real-time feedback by the temperature detector 63. By dynamically adjusting the power and working time of the heating lamp 62, it can ensure that the membrane switch 7 is tested under stable temperature conditions, thereby improving the accuracy and reliability of the test.

[0060] Specific working principle:

[0061] The limit placement table 1 is used as the base of the entire detection equipment to accurately and firmly place the membrane switch 7 to be tested. The limit design ensures that the membrane switch 7 will not be displaced during the detection process, ensuring the accuracy and repeatability of the test. When the membrane switch 7 needs to be detected, the operator places the membrane switch 7 on the limit placement table 1, starts the elastic pushing device 2 to press downward, and under the drive of the elastic pushing device 2, the docking seal 3 and the surface of the sealed membrane switch 7 are in conflict. The docking seal 3 is tightly fitted with the surface of the membrane switch 7, so that the detection area forms a sealed environment. Through its good sealing performance, the influence of the external environment on the membrane switch 7 is effectively isolated. During the detection, the continuous touch device 4 is used to realize the continuous trigger detection of the control key of the membrane switch 7. At the same time, the simulated water delivery device 5 is installed on the elastic pushing device 2 to simulate the water penetration in the outdoor or harsh environment. Its output end is connected to the docking seal 3 to inject a certain amount of water into the sealed environment. During the detection process, the simulated water delivery device 5 injects water into the docking seal 3 at a preset rate and amount to simulate the working state of the membrane switch 7 in a humid environment. By monitoring the effect of moisture on the performance of the membrane switch 7, its moisture-proof performance is evaluated. The simulated heating device 6 is used to simulate the effect of a high temperature environment on the membrane switch 7. By controlling the power and temperature of the heating element, the working scenes under different temperature conditions are simulated. During the detection process, the simulated heating device 6 heats the membrane switch 7 according to a preset temperature curve to simulate its working state in a high temperature environment. By monitoring the effect of high temperature on the performance of the membrane switch 7, its high temperature resistance and thermal stability are evaluated. A comprehensive evaluation of the adaptability of the membrane switch 7 in outdoor or harsh environments is achieved. By simulating various harsh conditions in actual use, the reliability and stability of the membrane switch 7 in complex environments are ensured.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A thin film switch performance detection device, characterized in that, It includes a limit placement table (1), an elastic pressing device (2), a docking seal (3), a continuous contact device (4), a simulated water delivery device (5) and a simulated heating device (6); the limit placement table (1) is used for limit placement of a membrane switch (7); the elastic pressing device (2) is installed on the top of the limit placement table (1); the continuous contact device (4) is installed at the movable end of the elastic pressing device (2), and the continuous contact device (4) is used for continuously triggering the control keys of the membrane switch (7); the docking seal (3) is installed at the bottom of the continuous contact device (4), and the docking seal (3) is used for sealing and fitting the surface of the membrane switch (7); the simulated water delivery device (5) is installed on the elastic pressing device (2), and the output end of the simulated water delivery device (5) is connected to the docking seal (3); the simulated heating device (6) is installed inside the continuous contact device (4). The continuous contact device (4) includes a fixed mounting tool (41) installed on the elastic pressing device (2). A docking mounting port for installing a connecting hopper (31) is provided at the bottom of the fixed mounting tool (41). A reset mounting plate (43) is provided inside the fixed mounting tool (41). An eccentric pressing roller (44) is also installed inside the fixed mounting tool (41). The eccentric pressing roller (44) abuts against the top of the reset mounting plate (43). An elastic pressing rod (42) is installed below the reset mounting plate (43). A pressing contact head (46) is installed on the elastic pressing rod (42), and the pressing contact head (46) is used for abutting against the control keys of the membrane switch (7); the reset mounting plate (43) is covered with adjustment mounting holes (431). Installation guide posts (432) are installed on both sides of the reset mounting plate (43). The installation guide posts (432) are slidably connected to the reset mounting plate (43). The installation guide posts (432) are fixedly connected to the fixed mounting tool (41). A third pressing spring (433) is also installed between the installation guide posts (432) and the fixed mounting tool (41); the pressing contact head (46) includes a limit sliding ring (461). The outer wall of the limit sliding ring (461) is slidably connected to the inner wall of the docking seal (3). The limit sliding ring (461) is connected to the elastic pressing rod (42). The limit sliding ring (461) is covered with elastic abutting blocks (462).

2. The performance detection device for a membrane switch according to claim 1, wherein, The limit placement table (1) includes a limit sliding table (11) provided directly below the elastic pressing device (2). A sliding mounting frame (12) is installed on the limit sliding table (11). The sliding mounting frame (12) slides horizontally on the limit sliding table (11). A limit placement core (14) is installed inside the sliding mounting frame (12). An induction slot (13) is installed on the side of the sliding mounting frame (12), and the induction slot (13) is used for connecting the transmission end of the membrane switch (7).

3. The performance detection device for a membrane switch according to claim 2, characterized in that A membrane switch placement groove (141) is provided inside the limit placement core (14). A plurality of adsorption air holes (1411) are provided inside the membrane switch placement groove (141), and the adsorption air holes (1411) are used for adsorbing the membrane switch (7).

4. The performance detection device for a membrane switch according to claim 3, characterized in that, The elastic pressing device (2) includes a mounting bracket (21) installed on the limit placement table (1). A moving push plate (22) is installed on the mounting bracket (21), and a buffer pressing device (23) for elastically pressing the moving push plate (22) is also installed on the mounting bracket (21).

5. The performance detection device for a membrane switch according to claim 1, wherein The top of the docking seal (3) is provided with a connecting hopper (31). The connecting hopper (31) is communicated with the continuous contact device (4). The inner wall of the docking seal (3) is provided with a spraying port (32) and a suction port (33). A sealing ring (34) is installed at the bottom of the docking seal (3).

6. The performance detection device for a membrane switch according to claim 5, wherein, The simulated water conveyance device (5) includes a liquid storage tank (53) installed on the elastic pressing device (2). A suction pump (51) and a delivery pump (52) are installed on the liquid storage tank (53). The output end of the delivery pump (52) is connected to the spraying port (32) of the docking seal (3), and the input end of the suction pump (51) is connected to the suction port (33) of the docking seal (3).

7. The performance detection device for a membrane switch according to claim 6, characterized in that, The simulated heating device (6) includes a mounting plate (61) installed on the fixed fixture (41). A plurality of heating lamps (62) are installed on the mounting plate (61), and a temperature detector (63) is installed on the mounting plate (61).

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