Automatic testing device for electromechanical synchronism of touch switch

Abstract

The utility model discloses an automatic testing device for electromechanical synchronism of a touch switch. The automatic testing device comprises a bottom plate, a vertical plate and a pressing mechanism, a test plate is mounted on the bottom plate; the vertical plate is fixedly connected with the bottom plate, a control box is mounted on the vertical plate, and the test plate is electrically connected with the control box; the pressing mechanism is installed on the vertical plate and arranged on the upper side of the testing plate, the pressing mechanism is used for detecting the light touch switches with fixed extrusion force and screening out the light touch switches with poor synchronism, and the testing plate is provided with a detection interface used for being connected with the light touch switches. According to the utility model, the mechanical tactile feedback of the touch switch is reflected in a fixed pressing force manner, so that the uncertainty of the tactile feedback of an operator can be eliminated; the pressing device is matched with rated pressing force of the touch switch for operation, so that errors caused by manual operation of operators are reduced; the photoelectric sensor is used for limiting the stroke of the automatic pressing device, and the problem that the to-be-tested piece is damaged due to over-stroke is not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of test equipment, and specifically relates to a light touch switch electromechanical synchronism automatic test device. BACKGROUND

[0002] As a kind of popular degree extremely high switch type, its core function is that when user exerts slight pressure, circuit connection is realized, and clear perceptible sound or tactile feedback is given to user, to confirm that current has successfully flowed. Once switch releases, current flow stops immediately. In short, light touch switch is an instant response device that can be perceived by touch, and its tangible feedback mechanism ensures that user has explicit perception for switch operation and its signal flow. But this perception is influenced by pressing force of switch, spring material and size error and other related factors, when user has tactile feedback obviously, electrical performance is not connected frequently, at this time, user needs to further press the mechanical stroke of switch to realize electrical conduction, which greatly affects user experience.

[0003] Through relevant actual verification test, when the mechanical stroke of light touch switch and electrical stroke (electromechanical synchronism) reach more than 0.1mm, user's tactile feedback is obviously influenced, and the theoretical design stroke error of light touch switch is usually ±0.2mm, so the precision control of electromechanical synchronism is more difficult.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a light touch switch electromechanical synchronism automatic test device.

[0005] The information disclosed in the background section of this document is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as acknowledging or in any form implying that the information constitutes prior art known to those skilled in the art. CONTENT OF UTILITY MODEL

[0006] The utility model aims at providing a light touch switch electromechanical synchronism automatic test device, which can solve the problem of poor electromechanical synchronism during light touch switch detection.

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by a specific embodiment of the utility model is as follows:

[0008] A light touch switch electromechanical synchronism automatic test device, comprising: bottom plate, stand and pressing mechanism;

[0009] The test plate is installed on the bottom plate;

[0010] The stand is fixedly connected with the bottom plate, the control box is installed on the stand, and the test plate is electrically connected with the control box;

[0011] The pressing mechanism is installed on the vertical plate and arranged on the upper side of the test plate, and is used for detecting the tactile switch with a fixed extrusion force, so as to screen out the tactile switch with poor synchronism.

[0012] In one or more embodiments of the utility model, the test plate is provided with a detection interface for connecting the tactile switch, so as to perform electrical function detection on the tactile switch.

[0013] In one or more embodiments of the utility model, the control box is provided with an AC / DC module, a communication interface and a microcontroller, the AC / DC module and the communication interface are electrically connected with the microcontroller, and the microcontroller is electrically connected with the stepping motor, the pressure sensor and the photoelectric sensor respectively.

[0014] In one or more embodiments of the utility model, the pressing mechanism comprises a pair of fixed plates, the fixed plates are fixedly connected with the side wall of the vertical plate, and the fixed plates are used for mounting the stepping motor and the guide rail.

[0015] The upper side of the fixed plate is provided with the stepping motor, and the stepping motor is used for driving the sliding table to move up and down.

[0016] In one or more embodiments of the utility model, the output end of the stepping motor is connected with a lead screw, a guide rail is connected between the pair of fixed plates, and the guide rail is used for guiding the sliding table to move up and down.

[0017] In one or more embodiments of the utility model, a sliding block is arranged in the guide rail, a sliding table is connected with the sliding block, and the sliding table is screw-connected with the lead screw, so that the lead screw can be rotated when the stepping motor operates, and the sliding block can move up and down in the guide rail under the action of the screw thread.

[0018] In one or more embodiments of the utility model, the sliding table is provided with a mounting plate, the mounting plate is provided with a lifting plate, and the lifting plate is used for mounting a connecting rod and a pressure sensor.

[0019] In one or more embodiments of the utility model, the lifting plate is slidably connected with the connecting rod, the lower end of the connecting rod is connected with the pressure sensor, and the pressure sensor is used for controlling the pressing force, so as to detect a plurality of tactile switches with the same pressing force and screen out the tactile switch with poor synchronism.

[0020] The lower bottom of the pressure sensor is connected with a pressing plate, the pressing plate corresponds to the test plate, and the pressing plate is used for pressing the tactile switch.

[0021] In one or more embodiments of the utility model, one pair of springs is equipped outside the connecting rod, one pair of the spring is equipped on the upper and lower sides of the lifting plate respectively, when the pressing plate contacts the light touch switch, the spring outside the connecting rod will make the connecting rod above the pressure sensor continue to press down and act on the pressure sensor, after reaching the set pressure value, the operation of the stepping motor is stopped, at this time, the light touch switch contacts the test plate, and the electrical function of the light touch switch can be detected.

[0022] In one or more embodiments of the utility model, one pair of photoelectric sensors is installed on the guide rail side wall, one pair of the photoelectric sensor is equipped on the upper and lower sides of the guide rail respectively, the photoelectric sensor is electrically connected with the control box, the photoelectric sensor is used for limiting the moving position of the sliding table, the detection signal of the photoelectric sensor is connected to the microcontroller, the microcontroller is detected, when the photoelectric sensor signal is reversed, the operation of the stepping motor is stopped.

[0023] Compared with the prior art, the utility model discloses a kind of light touch switch electromechanical synchronism automatic test device, the mechanical tactile feedback of light touch switch is reflected by fixed pressing force, and then the uncertainty of operator tactile feedback can be excluded;Pressing device cooperates the rated pressing force of light touch switch and operates, reduces the error introduced when operator manually operates;Use photoelectric sensor to limit the stroke of automatic pressing device, and the problem that the measured piece is not prone to overstroke damage. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0025] Figure 1 It is a perspective view of a kind of light touch switch electromechanical synchronism automatic test device in one embodiment of the utility model;

[0026] Figure 2 It is Figure 1 structure schematic view in A place in the embodiment of the utility model;

[0027] Figure 3 It is a side view of a kind of light touch switch electromechanical synchronism automatic test device in one embodiment of the utility model;

[0028] Figure 4 It is Figure 3 structure schematic view in B place in the embodiment of the utility model;

[0029] Figure 5A system block diagram of the touch switch electromechanical synchronism automatic testing device in one embodiment of the present application;

[0030] Figure 6 A test flow chart of the touch switch electromechanical synchronism automatic testing device in one embodiment of the present application.

[0031] Main figure mark explanation:

[0032] 1-bottom plate, 101-test plate, 2-vertical plate, 201-control box, 3-pressing mechanism, 301-fixed plate, 302-stepping motor, 303-guide rail, 304-sliding block, 305-sliding table, 306-mounting plate, 307-lifting plate, 308-connecting rod, 309-pressure sensor, 310-pressing plate, 311-spring, 312-optical sensor. Specific implementation

[0033] In order to make the person skilled in the art better understand the technical scheme in the present application, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0034] As shown in the figure, Figures 1 to 6 A touch switch electromechanical synchronism automatic testing device in one embodiment of the present application, comprising a bottom plate 1, a vertical plate 2 and a pressing mechanism 3.

[0035] Among them, the test plate 101 is installed on the bottom plate 1, and the detection interface is arranged on the test plate 101. The touch switch is connected with the detection interface, and when the pressing plate 310 presses the touch switch, the electrical function detection of the touch switch can be carried out.

[0036] As shown in the figure, Figures 1 to 6 The vertical plate 2 is fixedly connected with the bottom plate 1, and the control box 201 is installed on the vertical plate 2. The test plate 101 is electrically connected with the control box 201.

[0037] Among them, the control box 201 is provided with an AC / DC module, a communication interface and a microcontroller. The AC / DC module and the communication interface are electrically connected with the microcontroller, and the microcontroller is electrically connected with the stepping motor 302, the pressure sensor 309 and the optical sensor 312 respectively. The AC / DC module can convert AC220V voltage into DC12V, and the on-board DC / DC and LDO module can convert DC12V into DC3.3V for use of the microcontroller.

[0038] The microcontroller is responsible for the detection and display of the pressure sensor 309, the detection of the photoelectric sensor 312 signal, the control and driving of the stepping motor 302, and the detection of the electrical performance of the microswitch.

[0039] In addition, the microcontroller can interact with the host computer through the Modbus RTU protocol. After the host computer sends a read or control instruction, the microcontroller receives and verifies the instruction, and then performs the corresponding operation to realize data uploading and switch action.

[0040] As shown in Figures 1 to 6 The pressing mechanism 3 is installed on the stand plate 2 and is arranged on the upper side of the test plate 101. The pressing mechanism 3 is used to detect the microswitch with fixed extrusion force, and is used to screen out microswitchs with poor synchronicity.

[0041] The pressing mechanism 3 includes a pair of fixed plates 301, which are fixedly connected with the side wall of the stand plate 2. The fixed plates 301 are used to install the stepping motor 302 and the guide rail 303.

[0042] In addition, the upper fixed plate 301 is provided with the stepping motor 302, which is used to drive the sliding table 305 to move up and down. Through the precise control of the stepping motor 302, the pressing stroke of the pressing plate 310 can be reliably controlled, and the control accuracy can reach ±0.05mm. The stroke error of the microswitch is usually ±0.2mm, so the microswitch can be effectively protected from being damaged.

[0043] Specifically, the stepping motor 302 is connected with a lead screw, and a pair of fixed plates 301 are connected with a guide rail 303, which is used to guide the up and down movement of the sliding table 305.

[0044] In addition, the guide rail 303 is provided with a sliding block 304, the sliding block 304 is connected with the sliding table 305, and the sliding table 305 is threadedly connected with the lead screw. When the stepping motor 302 operates, the stepping motor 302 can drive the lead screw to rotate. Since the stepping motor 302 is threadedly connected with the sliding block 304, the sliding block 304 can move up and down in the guide rail 303 under the action of the thread.

[0045] As shown in Figures 1 to 6 The sliding table 305 is provided with a mounting plate 306, and the mounting plate 306 is provided with a lifting plate 307. The lifting plate 307 is used to install a connecting rod 308 and a pressure sensor 309.

[0046] The lifting plate 307 is slidably connected with a connecting rod 308, the lower end of the connecting rod 308 is connected with a pressure sensor 309, the pressure sensor 309 is used for controlling the pressing force, so as to ensure that the same pressing force is used for detecting a plurality of tactile switches, and tactile switches with poor synchronism are screened out. The detection accuracy of the pressure sensor 309 can reach ±0.05N, and the pressing force error of the tactile switch is usually about ±0.5N, so that the pressing force can be accurately controlled and detected through the setting of the pressing mechanism 3, and the manual detection error is reduced.

[0047] In addition, the lower bottom of the pressure sensor 309 is connected with a pressing plate 310, the pressing plate 310 corresponds to the test plate 101, and the pressing plate 310 is used for pressing the tactile switch.

[0048] Specifically, a pair of springs 311 are arranged on the outer side of the connecting rod 308, and the pair of springs 311 are arranged on the upper and lower sides of the lifting plate 307. When the pressing plate 310 contacts the tactile switch, the spring 311 on the outer side of the connecting rod 308 will continue to press the connecting rod 308 above the pressure sensor 309 and act on the pressure sensor 309, and when the set pressure value is reached, the operation of the stepping motor 302 is stopped, at this time, the tactile switch contacts the test plate 101, and the electrical function of the tactile switch can be detected.

[0049] In addition, a pair of photoelectric sensors 312 are installed on the side wall of the guide rail 303, and the pair of photoelectric sensors 312 are arranged on the upper and lower sides of the guide rail 303. The photoelectric sensor 312 is electrically connected with the control box 201. The photoelectric sensor 312 is used for limiting the moving position of the sliding table 305, and the tactile switch is not easy to be damaged. The detection signal of the photoelectric sensor 312 is connected to the microcontroller, and the microcontroller detects the signal. When the photoelectric sensor 312 signal is reversed, the operation of the stepping motor 302 is stopped.

[0050] Specifically, as shown in the figure, Figure 3 1. Prepare the test environment: ensure that the test environment meets the requirements, including appropriate power supply, grounding and shielding, to reduce the influence of interference on the test results, then connect the test fixture with the PC, and check the reliability thereof;

[0051] 2. Power-on check preparation: check whether the power supply is normal, check whether the USB communication and the RS485 communication are normal, and detect the initial state of the photoelectric sensor 312 and the pressure sensor 309;

[0052] 3. Motor pressing: the motor pressing command is sent to the microcontroller, and the state is cleared after the sending is completed;

[0053] 4. Detecting the pressure value and the feedback signal of the photoelectric sensor: the microcontroller controls the stepping motor 302 to run, detects the pressure value of the pressure sensor 309 and the feedback signal of the photoelectric sensor 312;

[0054] 5、Detect the electrical performance of the tactile switch: when the pressure sensor 309 reaches the preset value, the microcontroller reads the electrical performance state of the tactile switch at this time and uploads it to the PC;

[0055] 6、Motor up: issue the up action of the stepper motor 302, return to the initial position, detect the pressure value and the feedback signal of the photoelectric sensor 312 to ensure the normal operation of the system;

[0056] 7、Data analysis and processing: the host computer analyzes and processes the uploaded data and generates a test report;

[0057] 8、Test completion.

[0058] The application can screen out tactile switches with poor electromechanical synchronicity in advance, and the rated pressing force given in the specification of the tactile switch is used as the touch standard, i.e., mechanical performance, the size of the pressing force is controlled by the pressing mechanism 3, when the maximum pressing force is reached, it can be judged whether the electrical function of the tactile switch is realized, thereby ensuring the electromechanical synchronicity of the switch.

[0059] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0060] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An automated testing device for the electromechanical synchronization of a tactile switch, characterized in that, include: A base plate on which a test plate is mounted; An upright plate is fixedly connected to the base plate, and a control box is mounted on the upright plate. The test plate is electrically connected to the control box. The pressing mechanism is installed on the upright plate and located on the upper side of the test plate. The pressing mechanism is used to detect tactile switches with a fixed pressing force and to screen out tactile switches with poor synchronization.

2. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 1, characterized in that, The test board is equipped with a detection interface.

3. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 2, characterized in that, The control box contains an AC / DC module, a communication interface, and a microcontroller. The AC / DC module and the communication interface are electrically connected to the microcontroller.

4. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 3, characterized in that, The pressing mechanism includes a pair of fixed plates, which are fixedly connected to the side wall of the upright plate. A stepper motor is mounted on the upper fixed plate and is electrically connected to the microcontroller.

5. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 4, characterized in that, The output end of the stepper motor is connected to a lead screw, and a guide rail is connected between the pair of fixed plates.

6. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 5, characterized in that, A slider is slidably mounted inside the guide rail, and a slide table is connected to the slider. The slide table is threadedly connected to the lead screw.

7. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 6, characterized in that, A mounting plate is installed on the slide, and a lifting plate is installed on the mounting plate.

8. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 7, characterized in that, A connecting rod is slidably connected to the lifting plate, and a pressure sensor is connected to the lower end of the connecting rod. A pressing plate is connected to the bottom of the pressure sensor, and the pressing plate corresponds to the test plate.

9. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 8, characterized in that, A pair of springs are provided on the outer side of the connecting rod, and the pair of springs are respectively located on the upper and lower sides of the lifting plate.

10. The automated testing device for the electromechanical synchronization of a tactile switch according to claim 9, characterized in that, A pair of photoelectric sensors are installed on the side wall of the guide rail, with the pair of photoelectric sensors respectively located on the upper and lower sides of the guide rail, and the photoelectric sensors are electrically connected to the microcontroller.

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