CN118858932B - Membrane switch button test equipment based on push-down overload - Google Patents

Abstract

The invention belongs to the technical field of membrane switch testing, and particularly relates to a membrane switch key testing device based on pressing overload, which comprises a test bench and a switch assembly, wherein a base and a support frame are fixedly arranged on the test bench; the test bench is characterized by further comprising a pressing mechanism, wherein the pressing mechanism comprises a driving assembly and a pressing assembly, and the detecting mechanism comprises a pressure detecting assembly arranged on the pressing assembly and a data detecting assembly arranged on the test bench. According to the invention, the driving assembly is controlled by the control device, so that the pressing assembly is driven to move, the press of the key on the switch assembly is completed, when the contact on the key is contacted with the contact on the film switch, the switch assembly is in a conducting state, the pressing force applied to the key by the pressing assembly can be detected by the pressure detection assembly, meanwhile, the voltage and the current after the switch assembly is conducted can be subjected to data detection and collection by the data detection assembly, and the collected data can be further judged and analyzed.

Description

Membrane switch button test equipment based on push-down overload

Technical Field

The invention belongs to the technical field of membrane switch testing, and particularly relates to a membrane switch key testing device based on pressing overload.

Background

The membrane switch is an operating system integrating key functions, indication elements and instrument panels. The circuit consists of a panel, an upper circuit, an isolation layer and a lower circuit. When the membrane switch is pressed down, the contact of the upper circuit is deformed downwards to be contacted and conducted with the polar plate of the lower circuit, after the finger is loosened, the contact of the upper circuit is rebounded, the circuit is disconnected, and a signal is triggered by the loop. The membrane switch has the advantages of strict structure, attractive appearance and good sealing property. Has the characteristics of moisture resistance, long service life and the like. The method is widely applied to the fields of electronic communication, electronic measuring instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like.

The film key is a PET sheet (including a metal spring sheet also called a pot dome) with contacts, is used as a switch on a circuit board such as a PCB, an FPC and the like, and plays an important role of a touch switch between a user and an instrument. Compared with the traditional silica gel key, the film key has better hand feeling and longer service life, and can indirectly improve the production efficiency of various types of switches using the conductive film. The contact on the film button is located the conductive part (most is located the golden finger top on the circuit board) on the PCB board, and when the button receives external force to press, the central point of contact is concave, contacts the circuit on the PCB to form the return circuit, the electric current passes through, and whole product just can normally work.

With the development of technology, the performance test requirements on the membrane switch are higher and higher, and particularly, the performance test aspect on the membrane switch key is higher and higher. The conventional membrane switch test equipment generally aims at testing the membrane switch circuit problem, and tests the service life of the key. It is not known whether the membrane switch is affected by the pressing of the membrane switch button. It is also not known whether the key can withstand its pressing force when different external forces act on the key.

Disclosure of Invention

The invention aims to provide a membrane switch key testing device based on pressing overload, which can simulate the possible overvoltage situation in actual use by pressing overload testing of a membrane switch key so as to ensure whether the membrane switch can work normally or not when exceeding the normal use range, and ensure the reliability of the membrane switch under extreme conditions. When the membrane switch receives external force during use, the contact of the key and the use load of the switch during touch are analyzed through collection of test data, so that the working stability of the membrane switch is further known.

The technical scheme adopted by the invention is as follows:

The film switch key testing equipment based on the pressing overload comprises a testing table and a switch assembly, wherein a base and a supporting frame are fixedly arranged on the testing table;

The pressing mechanism comprises a driving component fixedly arranged on the supporting frame, the output end of the driving component is fixedly connected with a pressing component, and the pressing component comprises a pressing head arranged above the base and a pressing plate fixedly arranged at the output end of the driving component;

The detection mechanism comprises a pressure detection assembly fixedly arranged on the pressing assembly and a data detection assembly arranged on the test table;

the control device is electrically connected with the pressing mechanism and the detection mechanism respectively;

The control device is used for controlling the driving assembly to drive the pressing assembly to move, then the key on the switch assembly is pressed, when the key contact is contacted with the switch contact, the pressure detection assembly is used for detecting the pressing force applied to the key by the pressing assembly, and meanwhile, the data detection assembly is used for detecting and collecting the voltage and the current after the switch assembly is conducted, and then judging and analyzing whether overload conditions exist or not.

Further, a placing groove is formed in the base, a fixing plate is arranged in the placing groove in a sliding mode, the fixing plate is fixedly arranged at the output end of the fixed motor, and the fixed motor is fixedly arranged in the base;

The pressure head is detachably arranged at the bottom of the placing groove, and the position of the pressure head corresponds to the position of a key on the switch assembly.

Furthermore, a plug-in type connecting terminal is fixedly arranged on the test bench and is electrically connected with the data detection assembly, display lamps are arranged on the plug-in type connecting terminal, and the plug-in type connecting terminal is detachably connected with a control power supply;

the plug-in connection terminal is connected with the connector on the switch assembly in a plug-in mode, so that a conduction power supply can be provided for the switch assembly, and when the key of the switch assembly is pressed by the pressing assembly to be contacted with the contact on the switch, whether the switch assembly is in a conduction state or not can be observed through the display lamp.

Furthermore, the control power supply is an adjustable power supply, and is electrically connected with the control device, so that when the control device controls and adjusts the voltage of the control power supply, the control power supply is connected with the switch assembly through the plug-in connecting terminal to perform a transformation test, and the data detection assembly is ensured to conduct data collection under different voltages.

Further, the drive assembly comprises a drive hydraulic cylinder and a guide block which are fixedly arranged on the support frame, the output end of the drive hydraulic cylinder is fixedly connected with a drive rod, the guide block is internally provided with a guide rod in a sliding manner, and the drive rod and the guide rod are respectively in sliding connection with the support frame.

Further, a supporting hole and a guiding hole are formed in the supporting frame, the driving rod is in sliding connection with the supporting hole, the guiding rod is in sliding connection with the guiding hole, and the other ends of the driving rod and the guiding rod are fixedly connected with the pressing plate.

Further, the control device comprises a control shell fixedly arranged on the support frame, a control panel is fixedly arranged on the control shell, an observation groove is formed in the control shell, and transparent glass is fixedly arranged in the observation groove;

The control panel comprises a display screen and control buttons, wherein the display screen and the control buttons are fixedly arranged on the control shell.

Further, the control panel is electrically connected with the pluggable connection terminal, the pressure detection assembly, the data detection assembly and the driving assembly respectively;

The control button is adjusted to control and adjust the driving assembly and the plug-in type connecting terminal through the control panel, data of the driving assembly and the plug-in type connecting terminal can be collected through the display screen, and the data can be converted into more visual numbers or shape figures to be displayed.

Further, the pressure detection assembly comprises a pressure detector fixedly arranged at the bottom of the pressing plate.

Further, the data detection assembly comprises a data detector and a circuit detector which are fixedly arranged on the test bench, and the data detector and the circuit detector are respectively and electrically connected with the plug-in type connecting terminal;

the data detector can collect data when the switch assembly is turned on in a key test, and the circuit detector can detect whether an integrated circuit is normal when the switch assembly is turned on.

The invention has the technical effects that:

According to the film switch key testing equipment based on the pressing overload, the pressing mechanism is driven by the control device to control and regulate, and the pressing force can be applied to effectively simulate the load in actual use, so that the contact response and the working stability of the switch are judged. Meanwhile, the pressing force can be accurately controlled and regulated, and the accuracy and consistency of pressing tests with different forces are ensured. The control device can detect the opening and closing states of the membrane switch in real time through the detection mechanism, and can record the response time of the membrane switch, whether contacts are adhered, whether faults exist or not and the like in the pressing process so as to provide comprehensive performance evaluation.

According to the membrane switch key testing equipment based on the pressing overload, the driving assembly and the pressing assembly in the pressing mechanism are used for guaranteeing the effect that the membrane switch key can be effectively tested to be used under different pressures. Meanwhile, the pressing mechanism is detachably connected with the pressing assembly through adjusting pressing force and stroke, so that the application range of the equipment in test use can be improved, the test efficiency and reliability are improved, and the accuracy and safety in test can be ensured.

According to the membrane switch key testing equipment based on the pressing overload, the data in the switch testing process can be effectively detected and collected through the pressure detection assembly and the data detection assembly. When the membrane switch is turned on, the pressure detection component can detect specific pressure applied to the keys by the pressing component. Meanwhile, the data detection component can measure the voltage and current after the switch is conducted, and relevant data are collected. And the data is sent to the control device, so that comprehensive data support can be provided for analysis, processing and judgment can be performed, and the performance of the membrane switch can be evaluated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is an exploded schematic view of the overall structure of the present invention;

FIG. 4 is an overall schematic view of the pressing mechanism of the present invention;

FIG. 5 is an exploded view of the pressing mechanism of the present invention;

FIG. 6 is a cross-sectional view of a connecting plug-type connecting terminal structure of a switch assembly according to the present invention

FIG. 7 is an enlarged schematic view of the structure of FIG. 6A in accordance with the present invention;

FIG. 8 is a schematic view of the pressing assembly of the present invention;

FIG. 9 is a partial schematic view of a switch assembly and pressing mechanism of the present invention;

Fig. 10 is an enlarged schematic view of the structure of fig. 9B according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

10. test bench, 11, base, 111, placing groove, 112, fixing plate, 113, fixed motor, 12, supporting frame, 121, supporting hole, 122, guiding hole, 13, plug-in connection terminal, 131, display lamp, 14, control power supply;

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 and pressing plate;

30. a detection mechanism; 31, a pressure detection assembly, 32, a data detection assembly;

40. control device 41, control shell 411, observation groove 42, control panel 421, display screen 422 and control button;

50. And a switch assembly.

Detailed Description

The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.

As shown in fig. 1-10, a membrane switch key testing device based on pressing overload comprises a testing table 10 and a switch assembly 50, wherein a base 11 and a supporting frame 12 are fixedly arranged on the testing table 10;

The pressing mechanism 20 comprises a driving component 21 arranged on the supporting frame 12, the output end of the driving component 21 is fixedly connected with a pressing component 22, and the pressing component 22 comprises a pressing head 221 arranged above the base 11 and a pressing plate 222 fixedly arranged at the output end of the driving component 21;

the detection mechanism 30, the detection mechanism 30 includes a pressure detection assembly 31 fixedly arranged on the pressing assembly 22, and a data detection assembly 32 arranged on the test bench 10;

The control device 40, the control device 40 is connected with the pressing mechanism 20 and the detecting mechanism 30 electrically;

the driving assembly 21 is controlled by the control device 40 to drive the pressing assembly 22 to move, so as to press the key on the switch assembly 50, when the contact on the key is contacted with the contact on the switch, the pressing force applied to the key by the pressing assembly 22 can be detected by the pressure detection assembly 31 when the switch assembly 50 is in a conducting state, and meanwhile, the voltage and the current after the switch assembly 50 is conducted can be detected and collected by the data detection assembly 32, so that the collected data are judged and analyzed.

The term "overload under voltage" refers to a condition in which a voltage drop of a switching circuit is low due to an external factor during operation, and thus a load of the circuit exceeds a rated load. This situation may cause damage to the equipment and requires protective measures to avoid this. The control device 40 includes a data processing device (not shown in the figure), where the data processing device can process, compare and analyze the data collected by the detection mechanism 30 in the test device, and convert the data into a more visual tree diagram and transmit the number to the display screen 421 for display. 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, so as to control and regulate the elements in the pressing mechanism 20.

In the present embodiment, the test stand 10 serves as an infrastructure of the device, and can provide a stable working environment for testing the device. By fixing the base 11 to the test stand 10, the test tool can be stably placed, and the membrane switch can be effectively fixed when the test is performed, so that stable performance of the test can be ensured. By fixing the support frame 12 to the test stand 10, the pressing mechanism 20 can be effectively supported, and stability and accuracy of the pressing mechanism 20 when pressing the keys on the switch assembly 50 can be ensured. The pressing mechanism 20 is used for applying pressing force to the membrane switch key, so that whether the membrane switch key is overloaded or not can be effectively tested, and the reliability of the membrane switch key under extreme conditions is ensured. Wherein, the driving component 21 can drive the pressing component 22 to move up and down, so as to apply pressure to the keys on the switch component 50. The pressing assembly 22 is composed of a pressing head 221 and a pressing plate 222, the pressing head 221 is located above the base 11 and directly contacts with the membrane switch key, and the pressing plate 222 is fixed at the output end of the driving assembly 21, so that the pressing force can be effectively applied to the membrane switch by the driving of the driving assembly 21 to be matched with the pressing head 221, and the pressing force is applied to the switch key to perform pressing operation. The detecting mechanism 30 is used for detecting the pressure when the driving component 21 drives the pressing component 22 to press, and the voltage and the current after the membrane switch is conducted. The pressure detecting component 31 is fixed on the pressing component 22, and is capable of detecting the pressing force acting on the membrane switch key and monitoring the pressure change in the pressing process in real time. The data detecting component 32 is located on the test bench 10 and is electrically connected with the conducted switch component 50, so that voltage and current data of the thin film switch can be effectively detected and collected. The control device 40 is electrically connected to the pressing mechanism 20, and thereby can effectively control the movement of the pressing mechanism 20 and drive and adjust the pressing force of the pressing mechanism 20. The data of the detection mechanism 30 can be effectively received by being electrically connected with the detection mechanism 30, and analysis and judgment can be performed.

As shown in fig. 2,3 and 4, the placement groove 111 is formed in the base 11, so that 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 key on the switch assembly 50, so that the applicability and flexibility of the device are improved. The fixed plate 112 is slidably arranged in the placing groove 111, the fixed plate 112 is fixedly arranged at the output end of the fixed motor 113, 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, so that the stability of the switch assembly 50 during testing is ensured. The pressure head 221 is a part of the pressing assembly 22 directly contacting with the membrane switch button, and the pressure head 221 is located at the bottom of the placing groove 111 through detachable design, so that the pressure head 221 can be replaced according to different testing requirements, and the universality and the adaptability of the device are improved. Wherein the position of the pressing head 221 corresponds to the position of the key on the switch assembly 50, ensuring the accuracy and repeatability of the pressing operation. It should be noted that, an adjusting button is fixedly disposed on the test board 10, and is used for controlling the fixed motor 113 to start, so as to ensure that the fixed motor 113 can effectively fix the membrane switch.

As shown in fig. 4, 6 and 9, the plug-in connection terminal 13 is fixedly arranged on the test stand 10, so that the stability of the plug-in connection terminal 13 in use can be ensured, and the plug-in connection terminal 13 can be conveniently connected with the connector on the switch assembly 50 in a plug-in manner through being electrically connected with the data detection assembly 32, so as to provide a conductive power supply for the switch assembly 50. By providing the display lamp 131 on the pluggable connection terminal 13, it is possible to indicate whether the switch assembly 50 is in a conductive state, i.e. whether the switch key successfully closes the contact after being pressed, through the display lamp 131. The control power supply 14 is detachably connected with the pluggable connecting terminal 13, so that the power supply module can be replaced or adjusted according to the needs, different testing voltage or current requirements can be met, and the flexibility and the adaptability of the equipment are improved. Specifically, when the pressing assembly 22 applies pressure to the key of the switch assembly 50, if the contact of the key is successfully closed, the conductive power provided by the pluggable connection terminal 13 will close the circuit, and the display lamp 131 is turned on at this time, which indicates that the switch assembly 50 is in the conductive state. The tester can quickly judge the performance of the switch key by observing the state of the display lamp 131. If the display lamp 131 is not lit after being pressed, it may indicate that the switch key fails to properly close the contacts, i.e., the key may have a problem.

Preferably, the control power supply 14 is designed as an adjustable power supply, so that the output voltage can be adjusted according to the test requirement, and the use flexibility of the test equipment is improved. By electrically connecting the control power supply 14 to the control device 40, the control device 40 is allowed to precisely control and regulate the voltage of the power supply. By means of the control device 40, the operator can adjust the output voltage of the control power supply 14, which can be dynamically adjusted according to real-time test requirements. During testing, it may be necessary to simulate different voltage conditions to observe the response of the switch assembly 50. Voltage regulation may be achieved by regulating the voltage of the control power supply 14 by the control device 40 to perform a voltage transformation test on the switch assembly 50. The data detection component 32 is electrically connected with the pluggable connection terminal 13, so that the related electrical data can be collected when the switch component 50 is conducted. Wherein, due to the adjustability of the control power supply 14, the data detection component 32 is capable of collecting the conduction data of the switching component 50 at different voltage settings. The performance and reliability of the membrane switch under various voltage conditions can be evaluated. The collected data can analyze the behavior patterns of the switch assembly 50, identify potential problems, and optimize the switch design to improve product quality and reliability

As shown in fig. 4, 8 and 9, the driving hydraulic cylinder 211 is fixedly provided on the support frame 12, and the driving hydraulic cylinder 211 serves as a core power source of the driving unit 21, so that the pressing unit 22 can be effectively driven to move. By fixedly connecting the driving rod 213 to the output end of the driving hydraulic cylinder 211, the driving rod 213 can be pushed by hydraulic power to perform linear movement. Wherein, by fixing the guide block 212 on the support frame 12, the guide block 212 can ensure that the guide rod 214 can smoothly slide, thereby improving the stability and accuracy of the pressing operation. By slidably providing the guide rod 214 inside the guide block 212, the movement path of the driving rod 213 can be effectively guided.

In the present embodiment, when the driving hydraulic cylinder 211 is started, the output end thereof pushes the driving rod 213 to slide along the supporting hole 121, while the guide rod 214 smoothly slides along the guide hole 122 under the guide of the guide block 212. The synchronous linear movement ensures that the pressing of the switch key 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, accurate control of the pressing force and the stroke can be realized, and the requirements of different testing standards and the types of the membrane switch keys can be met. Wherein the sliding arrangement of the guide block 212 and the support frame 12 enhances the stability of the pressing mechanism 20, reduces sloshing or shifting during operation, and improves the repeatability and reliability of the test. The driving rod 213 and the guide rod 214 are slidably connected to the support hole 121 and the guide hole 122 of the support frame 12, respectively, so that stable sliding on the support frame 12 is ensured, and the synchronization and consistency of the pressing operation are ensured. The pressing plate 222 is fixedly connected to the other ends of the driving rod 213 and the guide rod 214, and the pressing plate 222 is a part directly contacting the pressing assembly 22, so that the power of the driving assembly 21 can be transmitted to the pressing assembly 22 to realize the pressing operation of the switch key.

As shown in fig. 1, 2 and 3, by fixedly disposing the control housing 41 above the support frame 12, physical protection and support structure can be provided for the control device 40. By providing the observation slot 411 in the control housing 41 and fixing the transparent glass in the observation slot 411, an operator can directly observe the state of the apparatus during the test. The control panel 42 is fixedly arranged on the control housing 41, and the control panel 42 is a main interface for an operator to interact with the device and comprises a display screen 421 and control buttons 422. The display 421 is used for displaying information such as device status, test parameters, and result data, and the control button 422 is used for manually controlling operations such as starting, stopping, controlling and adjusting the device. Specifically, through the use of the viewing slot 411 and transparent glass, in combination with the real-time data presentation of the display screen 421, immediate feedback of the testing process is provided to the operator. Problems can be found out in time and adjusted, and the accuracy and efficiency of the test are ensured.

In this embodiment, the control panel 42 is electrically connected with the pluggable connection terminal 13, so that an operator can directly control the power connection state of the pluggable connection terminal 13 through the control panel 42, including power-on and power-off operations, so that the connection and test flow of the switch assembly 50 can be simplified, and the convenience of operation is improved. The control panel 42 is electrically connected with the pressure detection assembly 31, so that the pressure in the pressing process can be monitored and regulated in real time. The control panel 42 is further electrically connected to the driving assembly 21, and can control the start, stop and operation parameters of the driving assembly 21, so as to ensure the accuracy and repeatability of the pressing operation. The data from the pressure detecting assembly 31, the data detecting assembly 32 and the driving assembly 21 can be collected and displayed in real time through the display screen 421 on the control panel 42, and the data is converted into intuitive numbers or shape charts, so that an operator can analyze and interpret test results conveniently. By adjusting the control buttons 422, fine control adjustments can be made to the drive assembly 21, including adjusting the pressing force, speed, and travel. The design of the control panel 42 greatly simplifies the control flow of the device, not only reduces the possibility of operation errors, but also improves the test efficiency.

As shown in fig. 3, 5 and 8, the pressure detector is fixedly arranged at the bottom of the pressing plate 222 and is directly contacted with the membrane switch, so that the pressure in the pressing process can be detected in real time, the pressing force is ensured to be in a proper range, the operation force in actual use can be simulated, and the switch key cannot be damaged due to overlarge force. The detected pressure value can be transmitted to the control device 40 in real time through the pressure detector, and can be visually displayed in a digital form through the display screen 421, so that the test conditions can be accurately controlled, and the accuracy and reliability of the test are ensured. Wherein the data detection assembly 32 includes a data detector and a circuit detector fixed to the test station 10. The main function of the data detector is to collect electrical data, such as voltage, current, etc., of the switch assembly 50 when the key test is turned on, and to evaluate the performance of the membrane switch key. The circuit detector is dedicated to detect whether the integrated circuit is operating normally when the switch assembly 50 is turned on, and can effectively detect parameters such as connectivity and impedance of the circuit, so as to ensure that the circuit design of the switch key meets the requirements. The comprehensive analysis of key-on data and circuit status of the switch assembly 50 by the data detection assembly 32 provides comprehensive test results that help determine the overall performance of the switch key and whether potential design and manufacturing defects exist.

In the present embodiment, the load in actual use is simulated mainly by applying a specific pressing force, thereby judging the contact response and the operation stability of the switch. An adjustable depression force is provided by the drive assembly 21. The switching state of the membrane switch is monitored in real time through a sensor or circuit connection. The response time of the switch during the pressing process, whether the contacts are stuck, whether there is a fault, etc. can be recorded by the control device 40 to provide a comprehensive performance evaluation. During the test, the control device 40 may set a number of parameters, such as the force of depression, the frequency of the key presses, the duration of the test, etc. Adjustment can be made through the control panel 42 of the device to accommodate different types of membrane switches, ensuring test diversity and applicability. After the test is completed, a test report can be automatically generated, including various performance indexes and charts, so that the reliability of the membrane switch can be conveniently evaluated.

The invention has the working principle that when the membrane switch key test is needed, the membrane switch is fixed by controlling the fixed motor 113 through placing the switch assembly 50 on the base 11. The driving assembly 21 is then controlled to operate by the control device 40, and when the driving hydraulic cylinder 211 is started, the output end thereof pushes the driving rod 213 to slide along the supporting hole 121, and at the same time, the guiding rod 214 slides smoothly along the guiding hole 122 under the guidance of the guiding block 212. The pressing plate 222 at the bottom is driven to move, and is matched with the pressing head 221 to apply pressure to the membrane switch key to simulate key operation. When the key is pressed, the pressure detecting component 31 detects the pressing force in real time, and the data detecting component 32 simultaneously measures the voltage and the current after the switch is turned on. The control component can collect pressure data and voltage and current data detected by the pressure detection component 31 and the data detection component 32, analyze and process the pressure data and the voltage and current data, and judge whether the performance of the switch key meets the requirements. Specifically, when the pressing assembly 22 applies pressure to the key of the switch assembly 50, if the contact of the key is successfully closed, the conductive power provided by the pluggable connection terminal 13 will close the circuit, and the display lamp 131 is turned on at this time, which indicates that the switch assembly 50 is in the conductive state. If the display lamp 131 is not lit after being pressed, it may indicate that the switch key fails to properly close the contacts, i.e., the key may have a problem. The data detection component 32 is electrically connected with the plug-in connection terminal 13, so that the data detection component can collect relevant voltage and current data when the switch component 50 is conducted. By adjusting the output voltage of the control power supply 14 by the control device 40, testing at different voltages can be performed, and the data detection assembly 32 can collect conduction data of the switching assembly 50 at different voltage settings.

Wherein data from the pressure sensing assembly 31, the data sensing assembly 32 and the drive assembly 21 can be collected and displayed in real time via a display screen 421 on the control device 40. And the data is converted into visual numbers or shape charts, so that an operator can analyze and read test results conveniently. Specifically, by adjusting the control button 422, the operator can make fine control adjustments to the drive assembly 21, including adjusting the pressing force, speed, and travel. Likewise, the power state of the pluggable connection terminal 13 can also be controlled by the control panel 42 to adapt to different testing requirements.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (7)

1. The film switch key testing equipment based on the pressing overload is characterized by comprising a testing table (10) and a switch assembly (50), wherein a base (11) and a supporting frame (12) are fixedly arranged on the testing table (10);

The pressing mechanism (20) comprises a driving assembly (21) arranged on the supporting frame (12), the output end of the driving assembly (21) is fixedly connected with a pressing assembly (22), the pressing assembly (22) comprises 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);

The detection mechanism (30), the detection mechanism (30) comprises a pressure detection assembly (31) fixedly arranged on the pressing assembly (22), and a data detection assembly (32) arranged on the test bench (10);

The control device (40) is electrically connected with the pressing mechanism (20) and the detection mechanism (30) respectively;

A placing groove (111) is formed in the base (11), a fixing plate (112) is arranged in the placing groove (111) in a sliding mode, the fixing plate (112) is fixedly arranged at the output end of a fixing motor (113), and the fixing motor (113) is fixedly arranged in the base (11);

the pressure head (221) is detachably arranged at the bottom of the placing groove (111), and the position of the pressure head (221) corresponds to the position of a key on the switch assembly (50);

The test bench (10) is also fixedly provided with a plug-in connection terminal (13), the plug-in connection terminal (13) is electrically connected with the data detection assembly (32), the plug-in connection terminals (13) are provided with display lamps (131), and the plug-in connection terminal (13) is detachably connected with a control power supply (14);

the plug-in connection terminal (13) is connected with a connector on the switch assembly (50) in a plug-in manner, so that a conduction power supply can be provided for the switch assembly (50), and when a key of the switch assembly (50) is pressed by the pressing assembly (22) to be contacted with a contact on a switch, whether the switch assembly (50) is in a conduction state or not can be observed through the display lamp (131);

the control power supply (14) is an adjustable power supply, and is electrically connected with the control device (40), when the control device (40) controls and adjusts the voltage of the control power supply (14), the control power supply is connected with the switch assembly (50) through the plug-in connection terminal (13) to perform a transformation test, so that the data detection assembly (32) can conduct data collection on the switch assembly (50) under different voltages;

the driving assembly (21) is controlled by the control device (40) to drive the pressing assembly (22) to move, then the key on the switch assembly (50) is pressed, when the contact on the key is contacted with the contact on the switch, the switch assembly (50) is in a conducting state, the pressing force applied to the key by the pressing assembly (22) can be detected by the pressure detection assembly (31), meanwhile, the voltage and the current after the switch assembly (50) is conducted can be detected and collected by the data detection assembly (32), and then the collected data are judged and analyzed.

2. The membrane switch key testing device based on the pressing overload of claim 1, wherein the driving assembly (21) comprises a driving hydraulic cylinder (211) and a guide block (212) which are fixedly arranged on the supporting frame (12), the output end of the driving hydraulic cylinder (211) is fixedly connected with a driving rod (213), the guide block (212) is slidably provided with a guide rod (214), and the driving rod (213) and the guide rod (214) are respectively in sliding connection with the supporting frame (12).

3. The membrane switch key testing device based on the pressing overload of claim 2, wherein the supporting frame (12) is provided with a supporting hole (121) and a guiding hole (122), the driving rod (213) is in sliding connection with the supporting hole (121), the guiding rod (214) is in sliding connection with the guiding hole (122), and the other ends of the driving rod (213) and the guiding rod (214) are fixedly connected with the pressing plate (222).

4. The membrane switch key test equipment based on the pressing overload of claim 3, wherein the control device (40) comprises a control shell (41) fixedly arranged above the supporting frame (12), a control panel (42) is fixedly arranged on the control shell (41), an observation groove (411) is formed in the control shell (41), and transparent glass is fixedly arranged in the observation groove (411);

wherein, the control panel (42) comprises a display screen (421) and control buttons (422) which are fixedly arranged on the control shell (41).

5. The membrane switch key testing device based on the pressing overload of claim 4, wherein the control panel (42) is electrically connected with the plug-in connection terminal (13), the pressure detection component (31), the data detection component (32) and the driving component (21) respectively;

The control button (422) can control and adjust the driving assembly (21) and the plug-in type connecting terminal (13) through the control panel (42), data can be collected through the display screen (421), and the data can be converted into more visual numbers or shape figures to be displayed.

6. The membrane switch key testing device based on the pressing overload of claim 5, wherein the pressure detecting component (31) comprises a pressure detector fixedly arranged at the bottom of the pressing plate (222).

7. The membrane switch key testing device based on the pressing overload of claim 6, wherein the data detecting component (32) comprises a data detector and a circuit detector which are fixedly arranged on the test bench (10), and the data detector and the circuit detector are respectively and electrically connected with the plug-in type connecting terminal (13);

The data detector can collect data when the key test of the switch assembly (50) is conducted, and the circuit detector can detect whether an integrated circuit when the switch assembly (50) is conducted is normal or not.