A membrane switch button test device based on pressure overload

Abstract

The present invention belongs to the technical field of membrane switch testing, and specifically relates to a membrane switch button testing device based on downward pressure overload, including a test bench and a switch assembly, wherein the test bench is fixedly provided with a base and a support frame; further comprising a pressing mechanism, wherein the pressing mechanism comprises a driving assembly and a pressing assembly; the detection mechanism comprises a pressure detection assembly arranged on the pressing assembly, and a data detection assembly arranged on the test bench. The present invention controls the driving assembly through a control device, thereby driving the pressing assembly to move, and completes pressing the button on the switch assembly. When the contact on the button touches the contact on the membrane switch, the switch assembly is in a conducting state, and the pressing force applied by the pressing assembly to the button can be detected through the pressure detection assembly, and at the same time, the voltage and current after the switch assembly is turned on can be detected and collected through the data detection assembly, and then the collected data can be judged and analyzed.

Description

Technical Field

[0001] The invention belongs to the technical field of membrane switch testing, and in particular relates to a membrane switch button testing device based on press-down overload. Background Art

[0002] Membrane switch is an operating system that integrates key functions, indicating elements, and instrument panels. It consists of four parts: panel, upper circuit, isolation layer, and lower circuit. When the membrane switch is pressed, the contact of the upper circuit deforms downward and contacts the plate of the lower circuit. When the finger is released, the contact of the upper circuit rebounds, the circuit is disconnected, and the loop triggers a signal. The membrane switch has a rigorous structure, beautiful appearance, and good sealing. It is moisture-proof and has a long service life. It is widely used in electronic communications, electronic measurement instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.

[0003] Among them, membrane keys are a piece of PET sheet with contacts (including metal springs, also called pot pieces), which are used as switches on circuit boards such as PCB and FPC, and play an important role as touch switches between users and instruments. Compared with traditional silicone keys, membrane keys have better feel and longer life, which can indirectly improve the production efficiency of various types of switches using conductive films. The contacts on the membrane keys are located in the conductive part of the PCB board (most of them are located above the gold fingers on the circuit board). When the key is pressed by external force, the center point of the contact is concave and contacts the circuit on the PCB, thus forming a loop, and the current passes through, so that the entire product can work normally.

[0004] With the development of science and technology, the performance test requirements for membrane switches are getting higher and higher, especially for the performance test of membrane switch buttons. Existing membrane switch testing equipment generally tests membrane switch circuit problems and tests the service life of buttons. As a result, it is impossible to understand whether the membrane switch will be affected when the membrane switch button is pressed during use. It is also impossible to know whether the button can withstand the pressing force when different external forces act on it. Summary of the invention

[0005] The purpose of the present invention is to provide a membrane switch key test device based on pressure overload. By performing a pressure overload test on the membrane switch key, it can simulate the overpressure situation that may occur in actual use, so as to ensure whether the membrane switch can work normally when it exceeds the normal use range, whether overload occurs, and ensure its reliability under extreme conditions. When the membrane switch is subjected to external force during use, the use load when the contact point of the key touches the switch, through the collection and analysis of the test data, the working stability of the membrane switch can be understood.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A membrane switch button test device based on downward pressure overload comprises a test bench and a switch assembly, wherein a base and a support frame are fixedly arranged on the test bench;

[0008] It also includes a pressing mechanism, the pressing mechanism includes a driving assembly fixedly arranged on the supporting frame, the output end of the driving assembly is fixedly connected with a pressing assembly, the pressing assembly includes a pressing head arranged above the base, and a pressing plate fixedly arranged at the output end of the driving assembly;

[0009] A detection mechanism, the detection mechanism comprising a pressure detection component fixedly arranged on the pressing component, and a data detection component arranged on the test bench;

[0010] A control device, the control device being electrically connected to the pressing mechanism and the detecting mechanism respectively;

[0011] Among them, the control device controls the driving component to drive the pressing component to move, and then presses the button on the switch component. When the button contact touches the switch contact and the switch component is in the on state, the pressure detection component can detect the pressing force applied by the pressing component to the button. At the same time, the data detection component can detect and collect data on the voltage and current after the switch component is turned on, and then judge and analyze whether there is an overload condition.

[0012] Furthermore, a placement groove is provided on the base, a fixing plate is slidably provided in the placement groove, the fixing plate is fixedly provided at the output end of the fixed motor, and the fixed motor is fixedly provided in the base;

[0013] The pressure head is detachably mounted on the bottom of the placement slot, and the position of the pressure head corresponds to the position of the button on the switch assembly.

[0014] Furthermore, the test bench is also fixedly provided with a plug-in connection terminal, the plug-in connection terminal is electrically connected to the data detection component, a display light is provided on the plug-in connection terminal, and the plug-in connection terminal is detachably connected to a control power supply;

[0015] The plug-in connection terminal can provide a conducting power supply to the switch assembly by being plugged in and out of the connection head on the switch assembly. When the button of the switch assembly is pressed by the pressing assembly and contacts the contact on the switch, it can be observed through the display light whether the switch assembly is in a conducting state.

[0016] Furthermore, the control power supply is an adjustable power supply, which is electrically connected to the control device. When the control device controls and adjusts the voltage of the control power supply, it is connected to the switch component through the plug-in connection terminal to perform a voltage transformation test, thereby ensuring that the data detection component can collect conduction data of the switch component under different voltages.

[0017] Furthermore, the driving assembly includes a driving hydraulic cylinder and a guide block fixedly mounted on the support frame, the output end of the driving hydraulic cylinder is fixedly connected to a driving rod, a guide rod is slidably mounted in the guide block, and the driving rod and the guide rod are respectively slidably connected to the support frame.

[0018] Furthermore, a support hole and a guide hole are provided on the support frame, the drive rod is slidably connected to the support hole, the guide rod is slidably connected to the guide hole, and the other ends of the drive rod and the guide rod are fixedly connected to the pressure plate.

[0019] Furthermore, the control device comprises a control housing fixedly mounted on the support frame, a control panel is fixedly mounted on the control housing, and an observation slot is opened on the control housing, and a transparent glass is fixedly mounted in the observation slot;

[0020] Wherein, the control panel includes a display screen and control buttons fixed on the control housing.

[0021] Furthermore, the control panel is electrically connected to the pluggable connection terminal, the pressure detection component, the data detection component and the drive component respectively;

[0022] Among them, adjusting the control button can control and adjust the drive component and the plug-in connection terminal through the control panel, and the data can be collected through the display screen and converted into more intuitive digital or shape diagrams for display.

[0023] Furthermore, the pressure detection assembly includes a pressure detector fixedly arranged at the bottom of the pressure plate.

[0024] Further, the data detection component includes a data detector and a circuit detector fixedly arranged on the test bench, and the data detector and the circuit detector are electrically connected to the plug-in connection terminal respectively;

[0025] The data detector can collect data when the switch component key test is turned on, and the circuit detector can detect whether the integrated circuit is normal when the switch component is turned on.

[0026] The technical effects achieved by the present invention are:

[0027] The membrane switch button test device based on pressure overload of the present invention drives the pressing mechanism to control and adjust through the control device, and can apply pressing force to effectively simulate the load in real use, so as to judge the contact response and working stability of the switch. At the same time, the pressing force can be accurately controlled and adjusted to ensure the accuracy and consistency of pressing tests with different forces. The control device can detect the opening and closing state of the membrane switch in real time through the detection mechanism, and can also record the response time of the membrane switch during the pressing process, whether the contacts are sticky, and whether there are faults, so as to provide a comprehensive performance evaluation.

[0028] The membrane switch button test device based on downward pressure overload of the present invention can effectively test the effect of membrane switch buttons under different pressures through the driving component and the pressing component in the pressing mechanism. At the same time, the pressing mechanism can improve the applicable scope of the device when used for testing by adjusting the pressing force and stroke and the detachable connection with the pressing component, improve the test efficiency and reliability, and ensure the accuracy and safety of the test.

[0029] The present invention provides a membrane switch button test device based on pressure overload, which can effectively detect and collect data when the switch is tested through a pressure detection component and a data detection component. When the membrane switch is turned on, the pressure detection component can detect the specific pressure applied by the pressing component to the button. At the same time, the data detection component can measure the voltage and current after the switch is turned on and collect relevant data. The data is sent to the control device, which can provide comprehensive data support for analysis, processing and judgment, and evaluate the performance of the membrane switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0032] Figure 3 It is an exploded schematic diagram of the overall structure of the present invention;

[0033] Figure 4 It is an overall schematic diagram of the pressing mechanism of the present invention;

[0034] Figure 5 It is an exploded schematic diagram of the pressing mechanism of the present invention;

[0035] Figure 6 This is a cross-sectional view of the switch assembly of the present invention connected to the plug-in connection terminal structure

[0036] Figure 7 The present invention Figure 6 A schematic diagram of the structure enlargement in the middle;

[0037] Figure 8 It is a schematic diagram of the structure of the pressing component of the present invention;

[0038] Fig. 9 A partial schematic diagram of the switch assembly and the pressing mechanism of the present invention;

[0039] Fig.10 The present invention Fig. 9 Enlarged schematic diagram of the structure at point B in the middle.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 10. Test bench; 11. Base; 111. Placement slot; 112. Fixing plate; 113. Fixing motor; 12. Support frame; 121. Support hole; 122. Guide hole; 13. Plug-in connection terminal; 131. Display light; 14. Control power supply;

[0042] 20. Pressing mechanism; 21. Driving assembly; 211. Driving hydraulic cylinder; 212. Guide block; 213. Driving rod; 214. Guide rod; 22. Pressing assembly; 221. Pressing head; 222. Pressing plate;

[0043] 30. Detection mechanism; 31. Pressure detection component; 32. Data detection component;

[0044] 40. control device; 41. control housing; 411. observation slot; 42. control panel; 421. display screen; 422. control button;

[0045] 50. Switch assembly. DETAILED DESCRIPTION

[0046] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0047] like Figure 1 - Fig.10 As shown, a membrane switch button test device based on press-down overload includes a test bench 10 and a switch assembly 50, and a base 11 and a support frame 12 are fixed on the test bench 10;

[0048] The pressing mechanism 20 includes a driving assembly 21 disposed on the support frame 12, and the output end of the driving assembly 21 is fixedly connected to a pressing assembly 22, and the pressing assembly 22 includes a pressing head 221 disposed above the base 11, and a pressing plate 222 fixedly disposed at the output end of the driving assembly 21;

[0049] The detection mechanism 30 includes a pressure detection component 31 fixedly mounted on the pressing component 22 and a data detection component 32 mounted on the test bench 10;

[0050] A control device 40, the control device 40 is electrically connected to the pressing mechanism 20 and the detection mechanism 30 respectively;

[0051] Among them, the control device 40 controls the driving component 21 to drive the pressing component 22 to move, and then presses the button on the switch component 50. When the contact on the button touches the contact on the switch and the switch component 50 is in the on state, the pressure detection component 31 can detect the pressing force applied to the button by the pressing component 22. At the same time, the data detection component 32 can detect and collect data on the voltage and current after the switch component 50 is turned on, and then judge and analyze the collected data.

[0052] It should be noted that the pressure overload refers to the situation in which the voltage of the switch circuit drops too low due to external factors during operation, so that the circuit load exceeds the rated load. This situation may cause damage to the equipment and requires protective measures to avoid it. The control device 40 includes a data processing device (not shown in the figure), wherein the data processing device can process and compare the data collected by the detection mechanism 30 in the test equipment, and transmit it to the display screen 421 for display by converting it into a more intuitive tree diagram and digital transmission. At the same time, the control signal of the control device 40 can be processed and converted by the data processing device, and sent to the pressing mechanism 20 to control and adjust the components in the pressing mechanism 20.

[0053] In this embodiment, the test bench 10, as the infrastructure of the equipment, can provide a stable working environment for testing the equipment. By fixing the base 11 on the test bench 10, the test equipment can be stably placed, and the membrane switch can be effectively fixed during the test, thereby ensuring the stable conduct of the test. By fixing the support frame 12 on the test bench 10, the pressing mechanism 20 can be effectively supported, ensuring the stability and accuracy of the pressing mechanism 20 when applying pressure to the buttons on the switch assembly 50. The pressing mechanism 20 is used to apply downward pressure to the membrane switch buttons, ensuring that the membrane switch buttons can be effectively tested for overload and ensuring its reliability under extreme conditions. Among them, the driving component 21 can drive the pressing component 22 to move up and down, thereby applying pressure to the buttons on the switch assembly 50. Among them, the pressing component 22 is composed of a pressure head 221 and a pressure plate 222. The pressure head 221 is located above the base 11 and directly contacts the membrane switch button. By fixing the pressure plate 222 at the output end of the driving component 21, the driving component 21 can effectively drive the pressing force to act on the membrane switch to cooperate with the pressure head 221, so that the pressing force acts on the switch button to implement the pressing operation. The detection mechanism 30 is used to detect the pressure when the driving component 21 drives the pressing component 22 to press, as well as the voltage and current after the membrane switch is turned on. Among them, the pressure detection component 31 is fixed on the pressing component 22, which can detect the pressing force acting on the membrane switch button and monitor the pressure change during the pressing process in real time. By locating the data detection component 32 on the test bench 10 and electrically connecting it to the switch component 50 after the conduction, the voltage and current data of the membrane switch can be effectively detected and collected. The control device 40 can effectively control the movement of the pressing mechanism 20 and drive and adjust the pressing force of the pressing mechanism 20 by being electrically connected to the pressing mechanism 20. Among them, by being electrically connected to the detection mechanism 30, the data of the detection mechanism 30 can be effectively received and analyzed and judged.

[0054] like Figure 2 , Figure 3 , Figure 4As shown, by opening the placement groove 111 on the base 11, the pressure head 221 and the switch assembly 50 can be accommodated. The position of the pressure head 221 can be adjusted according to the position of the button on the switch assembly 50, which improves the applicability and flexibility of the device. The fixed plate 112 is slidably arranged in the placement groove 111, and the fixed plate 112 is fixedly arranged at the output end of the fixed motor 113, and the fixed motor 113 is fixed inside the base 11, and the fixed plate 112 can be effectively driven by the fixed motor 113 to fix the switch assembly 50, ensuring the stability of the switch assembly 50 during testing. Among them, the pressure head 221 is the part of the pressing assembly 22 that directly contacts the membrane switch button. The pressure head 221 is located at the bottom of the placement groove 111 through a detachable design, so that the pressure head 221 can be replaced according to different test requirements, which improves the versatility and adaptability of the device. Among them, the position of the pressure head 221 corresponds to the button position on the switch assembly 50, ensuring the accuracy and repeatability of the pressing operation. It should be noted that an adjustment button is fixedly provided on the test bench 10 for controlling the fixing motor 113 to start, so as to ensure that the fixing motor 113 can effectively fix the membrane switch.

[0055] like Figure 4 , Figure 6 , Fig. 9 As shown, by fixing the plug-in connection terminal 13 on the test bench 10, the stability of the plug-in connection terminal 13 during use can be ensured, and by being electrically connected to the data detection component 32, the plug-in connection terminal 13 can be conveniently plugged and unplugged with the connector on the switch component 50, providing the switch component 50 with a conducting power supply. By providing a display light 131 on the plug-in connection terminal 13, the display light 131 can indicate whether the switch component 50 is in a conducting state, that is, whether the switch button successfully closes the contact after being pressed. By detachably connecting the plug-in connection terminal 13 with the control power supply 14, the power supply module can be replaced or adjusted as needed to adapt to different test voltage or current requirements, thereby improving the flexibility and adaptability of the device. Specifically, when the pressing component 22 applies pressure to the button of the switch component 50, if the contact of the button is successfully closed, the conducting power provided by the plug-in connection terminal 13 will close the circuit, and the display light 131 will light up at this time, indicating that the switch component 50 is in a conducting state. The tester can quickly judge the performance of the switch button by observing the state of the display light 131. If the display light 131 does not light up after being pressed, it may mean that the switch button fails to properly close the contacts, that is, there may be a problem with the button.

[0056] Preferably, the control power supply 14 is designed as an adjustable power supply to ensure that the output voltage can be adjusted according to the test requirements and to improve the flexibility of the test equipment. By electrically connecting the control power supply 14 to the control device 40, the control device 40 is allowed to accurately control and adjust the voltage of the power supply. Through the control device 40, the operator can adjust the output voltage of the control power supply 14, which can be dynamically adjusted according to the real-time test requirements. During the test, it may be necessary to simulate different voltage conditions to observe the reaction of the switch component 50. By adjusting the voltage of the control power supply 14 by the control device 40, voltage regulation can be achieved, thereby performing a voltage transformation test on the switch component 50. The data detection component 32 is electrically connected to the plug-in connection terminal 13 to ensure that relevant electrical data can be collected when the switch component 50 is turned on. Among them, due to the adjustability of the control power supply 14, the data detection component 32 can collect the conduction data of the switch component 50 under different voltage settings. The performance and reliability of the membrane switch under various voltage conditions can be evaluated. The collected data can be used to analyze the behavior pattern of the switch component 50, identify potential problems, and optimize the switch design, thereby improving product quality and reliability.

[0057] like Figure 4 , Figure 8 , Fig. 9 As shown, by fixing the driving hydraulic cylinder 211 on the support frame 12, the driving hydraulic cylinder 211 serves as the core power source of the driving assembly 21, and can effectively drive the pressing assembly 22 to move. By fixing the driving rod 213 at the output end of the driving hydraulic cylinder 211, the driving rod 213 can be pushed to perform linear motion by hydraulic power. Among them, by fixing the guide block 212 on the support frame 12, the guide block 212 can ensure that the guide rod 214 can slide smoothly, thereby improving the stability and accuracy of the pressing operation. By slidingly setting the guide rod 214 inside the guide block 212, the movement path of the driving rod 213 can be effectively guided.

[0058] In this embodiment, when the driving hydraulic cylinder 211 is started, its output end pushes the driving rod 213 to slide along the support hole 121, and the guide rod 214 slides smoothly along the guide hole 122 under the guidance of the guide block 212. The synchronous linear motion ensures that the pressing of the switch button by the pressing plate 222 is uniform and stable. By controlling the working state (such as pressure, speed, etc.) of the driving hydraulic cylinder 211, the precise control of the pressing force and stroke can be achieved to meet the requirements of different test standards and membrane switch button types. Among them, the sliding arrangement on the guide block 212 and the support frame 12 enhances the stability of the pressing mechanism 20, reduces the shaking or offset during the operation, and improves the repeatability and reliability of the test. The driving rod 213 and the guide rod 214 are respectively connected to the support hole 121 and the guide hole 122 on the support frame 12 in a sliding manner, ensuring that they can slide stably on the support frame 12, and ensuring the synchronization and consistency of the pressing action. A pressure plate 222 is fixedly connected to the other end of the driving rod 213 and the guide rod 214. The pressure plate 222 is the part that directly contacts the pressing component 22 and can transmit the power of the driving component 21 to the pressing component 22 to realize the pressing operation of the switch button.

[0059] like Figure 1 , Figure 2 , Figure 3 As shown, by fixing the control housing 41 above the support frame 12, physical protection and support structure can be provided for the control device 40. By opening an observation slot 411 on the control housing 41 and fixing transparent glass in the observation slot 411, the operator can directly observe the state of the equipment during the test. Among them, the control panel 42 is fixed on the control housing 41, and the control panel 42 is the main interface for the operator to interact with the equipment, including a display screen 421 and a control button 422. Among them, the display screen 421 is used to display information such as equipment status, test parameters, result data, etc., while the control button 422 is used to manually control the start, stop, control and adjustment of the equipment. Specifically, through the use of the observation slot 411 and transparent glass, combined with the real-time data display of the display screen 421, the operator is provided with instant feedback of the test process. Problems can be discovered and adjusted in a timely manner to ensure the accuracy and efficiency of the test.

[0060] In this embodiment, the control panel 42 is electrically connected to the plug-in connection terminal 13, ensuring that the operator can directly control the power connection state of the plug-in connection terminal 13 through the control panel 42, including power-on and power-off operations, which can simplify the connection and test process of the switch assembly 50 and improve the convenience of operation. The control panel 42 is electrically connected to the pressure detection assembly 31, and the pressure size during the pressing process can be monitored and adjusted in real time. Among them, the control panel 42 is also electrically connected to the drive assembly 21, and the start, stop and operation parameters of the drive assembly 21 can be controlled to ensure the accuracy and repeatability of the pressing operation. Through the display screen 421 on the control panel 42, data from the pressure detection assembly 31, the data detection assembly 32 and the drive assembly 21 can be collected and displayed in real time, and the data is converted into intuitive digital or shape diagrams, which is convenient for the operator to analyze and interpret the test results. By adjusting the control button 422, the drive assembly 21 can be finely controlled and adjusted, including adjusting the pressing force, speed and stroke. The design of the control panel 42 greatly simplifies the control process of the equipment, not only reduces the possibility of operating errors, but also improves the test efficiency.

[0061] like Figure 3 , Figure 5 , Figure 8 As shown, by fixing the pressure detector at the bottom of the pressing plate 222 and directly contacting the membrane switch, the pressure during the pressing process can be detected in real time to ensure that the pressing force is within a suitable range, which can simulate the operating force in actual use and will not damage the switch button due to excessive force. The detected pressure value can be transmitted to the control device 40 in real time through the pressure detector, and is intuitively displayed in digital form through the display screen 421, so that the test conditions can be accurately controlled to ensure the accuracy and reliability of the test. Among them, the data detection component 32 includes a data detector and a circuit detector fixed on the test bench 10. Among them, the main function of the data detector is to collect electrical data such as voltage, current, etc. when the switch component 50 is turned on, and the performance of the membrane switch button can be evaluated. Among them, the circuit detector focuses on detecting whether the integrated circuit is working properly when the switch component 50 is turned on, and can effectively detect parameters such as circuit connectivity and impedance to ensure that the circuit design of the switch button meets the requirements. Through the data detection component 32, the key conduction data and circuit state of the switch component 50 can be comprehensively analyzed to provide comprehensive test results, which helps to judge the overall performance of the switch button and whether there are potential design and manufacturing defects.

[0062] In this embodiment, the load in actual use is simulated mainly by applying a specific downward force, so as to judge the contact response and working stability of the switch. An adjustable downward force is provided by the drive component 21. The opening and closing state of the membrane switch is monitored in real time through a sensor or circuit connection. The control device 40 can record the response time of the switch during the downward pressure, whether the contacts are sticky, and whether there is a fault, etc., to provide a comprehensive performance evaluation. During the test, the control device 40 can set multiple parameters, such as downward pressure, key frequency, and test duration. It can be adjusted through the control panel 42 of the device to adapt to different types of membrane switches to ensure the diversity and applicability of the test. After the test is completed, a test report can be automatically generated, including various performance indicators and charts, which is convenient for evaluating the reliability of the membrane switch.

[0063] The working principle of the present invention is as follows: when a membrane switch button test is required, the switch assembly 50 is placed on the base 11, and the membrane switch is fixed by controlling the fixing motor 113. Subsequently, the driving assembly 21 is controlled to work by the control device 40. When the driving hydraulic cylinder 211 is started, its output end pushes the driving rod 213 to slide along the support hole 121, and the guide rod 214 slides smoothly along the guide hole 122 under the guidance of the guide block 212. The pressing plate 222 at the bottom is driven to move, and cooperates with the pressure head 221 to apply pressure to the membrane switch button to simulate the button operation. When the button is pressed, the pressure detection component 31 detects the pressing force in real time, and the data detection component 32 simultaneously measures the voltage and current after the switch is turned on. The pressure data, voltage and current data detected by the pressure detection component 31 and the data detection component 32 can be collected through the control component, and analyzed and processed to determine whether the performance of the switch button meets the requirements. Specifically, when the pressing component 22 applies pressure to the button of the switch component 50, if the contact of the button is successfully closed, the conductive power provided by the plug-in connection terminal 13 will close the circuit, and the display light 131 will light up, indicating that the switch component 50 is in the conductive state. If the display light 131 does not light up after pressing, it may indicate that the switch button fails to close the contact correctly, that is, there may be a problem with the button. The data detection component 32 is electrically connected to the plug-in connection terminal 13, which enables it to collect relevant voltage and current data when the switch component 50 is turned on. By adjusting the output voltage of the control power supply 14 through the control device 40, tests under different voltages can be performed, and the data detection component 32 can collect the conductive data of the switch component 50 under different voltage settings.

[0064] Among them, the display screen 421 on the control device 40 can collect and display data from the pressure detection component 31, the data detection component 32 and the drive component 21 in real time. And the data is converted into intuitive digital or shape diagrams, which is convenient for the operator to analyze and interpret the test results. Specifically, by adjusting the control button 422, the operator can finely control and adjust the drive component 21, including adjusting the pressing force, speed and stroke. Similarly, the power state of the plug-in connection terminal 13 can also be controlled by the control panel 42 to meet different test requirements.

[0065] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A membrane switch button test device based on pressure overload, characterized in that: It comprises a test bench (10) and a switch assembly (50), wherein a base (11) and a support frame (12) are fixedly provided on the test bench (10); The device also comprises a pressing mechanism (20), the pressing mechanism (20) comprising a driving assembly (21) arranged on the supporting frame (12), the output end of the driving assembly (21) being fixedly connected to a pressing assembly (22), the pressing assembly (22) comprising a pressing head (221) arranged above the base (11), and a pressing plate (222) fixedly arranged at the output end of the driving assembly (21); A detection mechanism (30), the detection mechanism (30) comprising a pressure detection component (31) fixedly arranged on the pressing component (22), and a data detection component (32) arranged on the test bench (10); A control device (40), the control device (40) being electrically connected to the pressing mechanism (20) and the detection mechanism (30) respectively; The base (11) is provided with a placement groove (111), a fixing plate (112) is slidably provided in the placement groove (111), the fixing plate (112) is fixedly arranged at the output end of a fixed motor (113), and the fixed motor (113) is fixedly arranged in the base (11); The pressing head (221) is detachably mounted on the bottom of the placement slot (111), and the position of the pressing head (221) corresponds to the position of a button on the switch assembly (50); The test bench (10) is also fixedly provided with a pluggable connection terminal (13), the pluggable connection terminal (13) is electrically connected to the data detection component (32), a display light (131) is provided on each of the pluggable connection terminals (13), and the pluggable connection terminal (13) is detachably connected to a control power supply (14); The plug-in connection terminal (13) is capable of providing a conducting power supply to the switch assembly (50) by being plugged in and out of the connection head on the switch assembly (50); when the key of the switch assembly (50) is pressed by the pressing assembly (22) and contacts the contact on the switch, it is possible to observe whether the switch assembly (50) is in a conducting state through the display light (131); The control power supply (14) is an adjustable power supply, and is electrically connected to the control device (40). When the control device (40) controls and adjusts the voltage of the control power supply (14), the plug-in connection terminal (13) is connected to the switch component (50) to perform a voltage transformation test, thereby ensuring that the data detection component (32) can collect conduction data of the switch component (50) under different voltages; The control device (40) controls the driving component (21) to drive the pressing component (22) to move, thereby pressing a key on the switch component (50); when a contact on the key touches a contact on the switch and the switch component (50) is in an on state, the pressure detection component (31) can detect the pressing force applied to the key by the pressing component (22), and the data detection component (32) can detect and collect data on the voltage and current of the switch component (50) after the switch component (50) is turned on, thereby performing judgment and analysis on the collected data.

2. The membrane switch key test device based on press-down overload according to claim 1, characterized in that: The driving assembly (21) comprises a driving hydraulic cylinder (211) and a guide block (212) fixedly arranged on the support frame (12); a driving rod (213) is fixedly connected to the output end of the driving hydraulic cylinder (211); a guide rod (214) is slidably arranged in the guide block (212); and the driving rod (213) and the guide rod (214) are respectively slidably connected to the support frame (12).

3. The membrane switch key test device based on press-down overload according to claim 2, characterized in that: The support frame (12) is provided with a support hole (121) and a guide hole (122); the drive rod (213) is slidably connected to the support hole (121); the guide rod (214) is slidably connected to the guide hole (122); and the other ends of the drive rod (213) and the guide rod (214) are fixedly connected to the pressure plate (222).

4. The membrane switch key test device based on press-down overload according to claim 3, characterized in that: The control device (40) comprises a control housing (41) fixedly arranged above the support frame (12), a control panel (42) being fixedly arranged on the control housing (41), and an observation slot (411) being opened on the control housing (41), and transparent glass being fixedly arranged in the observation slot (411); The control panel (42) comprises a display screen (421) and control buttons (422) fixedly arranged on the control housing (41).

5. The membrane switch key test device based on press-down overload according to claim 4, characterized in that: The control panel (42) is electrically connected to the plug-in connection terminal (13), the pressure detection component (31), the data detection component (32), and the drive component (21), respectively; The control button (422) can be adjusted to control the drive assembly (21) and the plug-in connection terminal (13) via the control panel (42), and data can be collected via the display screen (421) and converted into more intuitive numbers or graphic shapes for display.

6. The membrane switch key test device based on press-down overload according to claim 5, characterized in that: The pressure detection assembly (31) comprises a pressure detector fixedly arranged at the bottom of the pressure plate (222).

7. The membrane switch key test device based on press-down overload according to claim 6, characterized in that: The data detection component (32) comprises a data detector and a circuit detector fixedly arranged on the test bench (10), the data detector and the circuit detector being electrically connected to the plug-in connection terminal (13) respectively; The data detector can collect data when the switch component (50) is turned on during a key test, and the circuit detector can detect whether the integrated circuit is normal when the switch component (50) is turned on.

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