Button Load Life Test Device

Abstract

The present invention provides a key load life test device, which relates to the technical field of key detection equipment, including: a chassis main body, a support plate, a drive assembly and a test assembly; by placing the device to be tested on the support plate, the servo motor is turned on to drive the test assembly to move back and forth, and the weight test head is connected to the test assembly through a linear bearing, and can move up and down on the test assembly. When the test assembly rises, it drives the weight test head to rise, and when the test assembly falls, the weight test head falls with the test assembly under the action of its own gravity, hitting the device to be tested, and the servo motor can accurately control the striking speed of the test product. The application of the striking force of the test product adopts the form of weight self-weighting, which not only overcomes the shortcomings of the traditional cylinder striking method that the striking speed and force are difficult to control, but also overcomes the shortcomings of the spring force striking method that the spring is easily fatigued after long-term striking, and has the advantages of accurate striking speed control and stable and adjustable striking force.

Description

Technical Field

[0001] The present invention relates to the technical field of key detection equipment, and in particular to a key load life testing device. Background Art

[0002] The key life testers currently used in the market generally use a PLC touch screen to control the entire process of the keyboard striking life test, and use a cylinder to drive the test head to move back and forth to strike the equipment under test.

[0003] However, the striking speed and force of the traditional cylinder striking method are difficult to control, and it is impossible to accurately measure the key load life of the device under test. Summary of the Invention

[0004] The purpose of the present invention is to provide a key load life testing device to alleviate the technical problems in the prior art that the striking speed and force of the traditional cylinder striking method are difficult to control and the key load life of the device to be tested cannot be accurately measured.

[0005] In a first aspect, the present invention provides a key load life test device comprising: a chassis body, a support plate, a drive assembly, and a test assembly;

[0006] The drive assembly is arranged in the chassis body, the support plate is connected to the chassis body, and the support plate is used to support the device to be tested. The drive assembly has a servo motor, and the servo motor is transmission-connected to the test assembly. The test assembly is connected to a weight test head through a linear bearing, and the weight test head can hit the device to be tested due to its own gravity. The servo motor is configured to drive the test assembly to perform reciprocating motion up and down relative to the support plate.

[0007] In an alternative embodiment,

[0008] The driving assembly includes an eccentric member and a transmission member;

[0009] The eccentric member is mounted on the driving end of the servo motor, one end of the transmission member is connected to the eccentric member, and the other end of the transmission member is connected to the test assembly. The eccentric member is configured to drive the transmission member to reciprocate up and down.

[0010] In an alternative embodiment,

[0011] The eccentric component includes an eccentric piece and a fixing piece;

[0012] The fixing member is connected to the driving end of the servo motor, the eccentric member is detachably connected to the fixing member, a mounting hole is provided on the eccentric member, and a plurality of adjustment holes are provided on the fixing member.

[0013] In an alternative embodiment,

[0014] The transmission component includes a transmission vertical plate, a transmission horizontal plate and a transmission optical axis;

[0015] The transmission vertical plate is provided with a connecting groove, one end of the eccentric component has a snap-in bearing, the snap-in bearing extends into the connecting groove, the transmission vertical plate is connected to the transmission horizontal plate, one end of the transmission optical shaft is connected to the transmission horizontal plate, and the other end of the transmission optical shaft is connected to the test assembly.

[0016] In an alternative embodiment,

[0017] The key load life testing device further includes a bottom plate;

[0018] The bottom plate is installed on the top of the chassis body, and the bottom plate is connected to the support plate.

[0019] In an alternative embodiment,

[0020] The key load life testing device further includes a stepping motor;

[0021] The stepper motor is connected to the base plate, a driving end of the stepper motor passes through the base plate and is connected to the support plate, and the stepper motor is configured to drive the support plate to move relative to the base plate.

[0022] In an alternative embodiment,

[0023] The key load life testing device also includes a CCD camera;

[0024] The CCD camera is connected to the chassis body, and the CCD camera can capture images of the device under test. The CCD camera is configured to be connected to a server via Ethernet.

[0025] In an alternative embodiment,

[0026] The chassis body is provided with a touch screen, and the touch screen is used to be electrically connected to a lower computer.

[0027] In an alternative embodiment,

[0028] A force sensor is provided on the support plate, and the force sensor is configured to detect the impact force received by the device to be tested, and transmit the impact force information to the host computer through a force transmitter.

[0029] In an alternative embodiment,

[0030] A photoelectric sensor is provided in the chassis body;

[0031] The photoelectric sensor is configured to detect the height position of the driving component and transmit the height position information to the lower computer.

[0032] The key load life test device provided by the present invention comprises: a chassis main body, a support plate, a drive assembly and a test assembly; by placing the device to be tested on the support plate, the servo motor is turned on to drive the test assembly to move up and down, and the weight test head is connected to the test assembly through a linear bearing and can move up and down on the test assembly. When the test assembly rises, it drives the weight test head to rise, and when the test assembly falls, the weight test head falls with the test assembly under the action of its own gravity, hitting the device to be tested, and the servo motor can accurately control the striking speed of the test product. The application of the striking force of the test product adopts the form of weight self-weighting, which not only overcomes the shortcomings of the traditional cylinder striking method that the striking speed and force are difficult to control, but also overcomes the shortcomings of the spring force striking method that the spring is easily fatigued after long-term striking. It has the advantages of accurate striking speed control and stable and adjustable striking force, which alleviates the technical problems in the prior art that the striking speed and force of the traditional cylinder striking method are difficult to control and the key load life of the device to be tested cannot be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the overall structure of a key load life testing device provided by an embodiment of the present invention;

[0035] Figure 2 A schematic structural diagram of a driving component in a key load life testing device provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the explosion structure of an eccentric component in a key load life test device provided by an embodiment of the present invention;

[0037] Figure 4 This is a flow chart of the key load life testing device provided by an embodiment of the present invention.

[0038] Icons: 100-chassis body; 200-support plate; 300-drive assembly; 310-servo motor; 320-eccentric member; 321-eccentric member; 322-fixing member; 330-transmission member; 331-transmission vertical plate; 332-transmission horizontal plate; 333-transmission optical axis; 400-test assembly; 410-weight test head; 500-base plate; 600-stepping motor; 700-CCD camera; 800-touch screen. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0044] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0046] like Figure 1 、 Figure 2 As shown, the key load life testing device provided in this embodiment includes: a chassis body 100, a support plate 200, a drive assembly 300 and a test assembly 400; the drive assembly 300 is arranged in the chassis body 100, the support plate 200 is connected to the chassis body 100, the support plate 200 is used to support the device to be tested, the drive assembly 300 has a servo motor 310, the servo motor 310 is transmission-connected to the test assembly 400, the test assembly 400 is connected to the weight test head 410 through a linear bearing, the weight test head 410 can hit the device to be tested due to its own gravity, and the servo motor 310 is configured to drive the test assembly 400 to make reciprocating motion up and down relative to the support plate 200.

[0047] Specifically, the chassis body 100 has a cavity, the drive assembly 300 is installed in the chassis body 100, the support plate 200 is located between the chassis body 100 and the test assembly 400, and the device to be tested is placed on the support plate 200. The servo motor 310 in the drive assembly 300 drives the test assembly 400 to move away from the support plate 200 and rise to the highest point. Then the servo motor 310 drives the test assembly 400 to move downward, and the weight test head 410 performs free fall motion along the linear bearing, so that the weight test head 410 falls due to its own gravity and hits the device to be tested. The weight is hit by its own gravity. The device to be tested can be a computer keyboard, mobile phone, remote control and other keys and various buttons and switches for durability life test.

[0048] The key load life test device provided in this embodiment includes: a chassis body 100, a support plate 200, a drive component 300 and a test component 400; by placing the device to be tested on the support plate 200, the servo motor 310 is turned on to drive the test component 400 to move up and down, and the weight test head 410 is connected to the test component 400 through a linear bearing and can move up and down on the test component 400. When the test component 400 rises, the weight test head 410 is driven to rise. When the test component 400 falls, the weight test head 410 moves along with the test component under the action of its own gravity. The servo motor 310 can accurately control the striking speed of the test product, and the striking force of the test product is applied in the form of weight-added force, which not only overcomes the shortcomings of the traditional cylinder striking method that the striking speed and force are difficult to control, but also overcomes the shortcomings of the spring force striking method that the spring is easily fatigued after a long time of striking. It has the advantages of accurate striking speed control and stable and adjustable striking force, alleviating the technical problems in the existing technology that the traditional cylinder striking method is difficult to control the striking speed and force, and cannot accurately measure the key load life of the device under test.

[0049] On the basis of the above embodiments, in an optional implementation manner, the driving assembly 300 in the key load life testing device provided in this embodiment includes an eccentric member 320 and a transmission member 330; the eccentric member 320 is installed on the driving end of the servo motor 310, one end of the transmission member 330 is connected to the eccentric member 320, and the other end of the transmission member 330 is connected to the test assembly 400, and the eccentric member 320 is configured to be able to drive the transmission member 330 to reciprocate up and down.

[0050] Specifically, the eccentric member 320 is installed in the chassis body 100, one end of the transmission member 330 is located in the chassis body 100 and is connected to the eccentric member 320, the other end of the transmission member 330 passes through the chassis body 100 and is connected to the test component 400, and the driving end of the servo motor 310 is connected to the eccentric member 320. The eccentric member 320 can reciprocate up and down with the driving action of the servo motor 310, thereby causing the test component 400 to reciprocate up and down.

[0051] It should be noted that the servo motor 310 drives the eccentric member 320 to move upward, and the test assembly 400 moves upward accordingly. After the test assembly 400 reaches the highest position, the servo motor 310 drives the test assembly 400 to move downward, and the eccentric member 320 moves downward.

[0052] like Figure 3As shown, in an optional embodiment, the eccentric member 320 includes an eccentric member 321 and a fixing member 322; the fixing member 322 is connected to the driving end of the servo motor 310, the eccentric member 321 and the fixing member 322 are detachably connected, a mounting hole is provided on the eccentric member 321, and a plurality of adjustment holes are provided on the fixing member 322.

[0053] Specifically, a plurality of adjustment holes are provided on the fixing member 322, and a corresponding mounting hole is provided on the eccentric member 321. For example, five adjustment holes are provided along the same straight line on the fixing member 322. When the mounting hole is connected to the adjustment hole in the middle, the fixing member 322 and the eccentric member 321 are in a coaxial state. When the mounting hole is connected to the adjustment hole in a non-middle position, the fixing member 322 and the eccentric member 321 are in an eccentric state. When the fixing member 322 drives the eccentric member 321 to rotate, the transmission component 330 can move up and down.

[0054] In an optional embodiment, the transmission component 330 includes a transmission vertical plate 331, a transmission horizontal plate 332 and a transmission optical axis 333; the transmission vertical plate 331 is provided with a connecting groove, one end of the eccentric component 320 has a snap-on bearing, the snap-on bearing extends into the connecting groove, the transmission vertical plate 331 is connected to the transmission horizontal plate 332, one end of the transmission optical axis 333 is connected to the transmission horizontal plate 332, and the other end of the transmission optical axis 333 is connected to the test component 400.

[0055] Specifically, the transmission vertical plate 331 is set vertically, and the transmission horizontal plate 332 is set horizontally. The end of the eccentric member 320 away from the servo motor 310 extends into the connecting groove of the transmission vertical plate 331 through the clamping bearing. The eccentric member 320 reciprocates up and down through the transmission vertical plate 331, the transmission horizontal plate 332 and the transmission optical axis 333 and moves together with the test component 400.

[0056] In an optional embodiment, the key load life testing device also includes a base plate 500; the base plate 500 is installed on the top of the chassis body 100, and the base plate 500 is connected to the support plate 200; the key load life testing device also includes a stepper motor 600; the stepper motor 600 is connected to the base plate 500, and the driving end of the stepper motor 600 passes through the base plate 500 and is connected to the support plate 200, and the stepper motor 600 is configured to drive the support plate 200 to move relative to the base plate 500.

[0057] Specifically, a base plate 500 is installed on the top of the chassis body 100, the stepper motor 600 is located inside the chassis body 100, a through hole is opened on the base plate 500, and the driving end of the stepper motor 600 is connected to the support plate 200 through the through hole. The stepper motor 600 drives the support plate 200 to move relative to the base plate 500, thereby adjusting the distance between the support plate 200 and the test component 400.

[0058] The key load life test device provided in this embodiment electrically adjusts the height of the support plate 200 by controlling the forward and reverse rotation of the stepper motor 600 to drive the electric cylinder to extend and retract. It has digital settings and precise positioning, which facilitates the installation and adjustment testing of products and fixtures of various specifications.

[0059] Based on the above embodiments, Figure 4 As shown, in an optional embodiment, the key load life testing device provided in this embodiment also includes a CCD camera 700; the CCD camera 700 is connected to the chassis body 100, the CCD camera 700 can capture images of the device to be tested, and the CCD camera 700 is configured to be connected to the server via Ethernet.

[0060] Specifically, the camera part of the CCD camera 700 is located on one side of the support plate 200. The CCD camera 700 captures images of the device under test in real time. The images captured by the CCD camera 700 are connected to the server via Ethernet, and the test conditions recorded by the CCD are uploaded to the server so that users can record and remotely view the test conditions.

[0061] In addition, the host computer of the test machine is connected to the server via Ethernet to upload test data, and the host computer of the test machine is connected to the lower computer PLC via USB to RS232 serial port to obtain test data, monitor test status and remote test operations.

[0062] In an optional embodiment, a touch screen 800 is provided on the chassis body 100 , and the touch screen 800 is used to be electrically connected to a lower computer.

[0063] Specifically, the PLC of the test machine is connected to the industrial control touch screen 800 through the RS232 serial port to exchange interface data.

[0064] In an optional embodiment, a force sensor is provided on the support plate 200 , and the force sensor is configured to detect the impact force applied to the device under test and transmit the impact force information to the host computer via a force transmitter.

[0065] Specifically, the test host computer is connected to the force transmitter via USB to RS485, collects and records the real-time impact force data of the test product, forms a visual curve chart, and uploads it to the server for reference by test-related personnel.

[0066] In addition, a voltage signal conversion module is installed on the device under test. The test machine's lower computer PLC can monitor the real-time status of various test products at their respective test voltage levels through the connected voltage signal conversion module.

[0067] In an optional embodiment, a photoelectric sensor is provided in the chassis body 100; the photoelectric sensor is configured to detect the height position of the driving component 300 and transmit the height position information to the lower computer.

[0068] Specifically, the PLC of the lower computer of the test machine receives the signal from the photoelectric sensor and controls the operation of the servo motor 310 and the stepper motor 600 through a program. The PLC of the lower computer can automatically cycle the test by setting the target test cycle through the program, automatically judge the test results, and upload the test data to the upper computer, which is then transmitted to the server by the upper computer.

[0069] The key load life test device provided in this embodiment uses a USB-to-RS485 serial port connected force transmitter to collect real-time impact force signals from the test product, create intuitive curve charts on the host computer control interface, and upload them to the server for relevant personnel to view. The lower computer PLC, through a connected voltage signal conversion module, collects feedback signals from the test product, monitors the product's real-time test status, and determines whether the product is OK or NG. If the test fails, the test is stopped, an alarm is immediately sounded, prompting personnel to promptly check the test site, and the test data is uploaded to the host computer. In addition, the host computer programmatically creates a user test interface and parameter setting interface to set test conditions such as the target cycle, state detection frequency, weight load, servo rotation speed, speed target cycle, and upper and lower dwell times. The corresponding test key position and test signal feedback type are then selected. After setting the parameters, they can be saved and transmitted to the lower computer for execution. The pre-set conditions, the real-time number of impacts, and whether the life of each impact is normal can be viewed in real time on the host computer test interface. If any instability occurs, an automatic alarm will be automatically issued, and the test will be stopped immediately to investigate the cause.

[0070] Furthermore, the onboard camera allows for remote monitoring of test equipment operation, allowing users to observe current test results and select test results from previous time periods in real time from a remote location. The test interface can also be viewed remotely via a webpage, integrating visual monitoring with real-time remote data sharing.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A key load life test device, characterized in that: include: A chassis body (100), a support plate (200), a drive assembly (300) and a test assembly (400); The driving assembly (300) is arranged in the chassis body (100), the support plate (200) is connected to the chassis body (100), the support plate (200) is used to support the device to be tested, the driving assembly (300) has a servo motor (310), the servo motor (310) is transmission-connected to the test assembly (400), the test assembly (400) is connected to the weight test head (410) via a linear bearing, the weight test head (410) can hit the device to be tested due to its own gravity, and the servo motor (310) is configured to drive the test assembly (400) to perform up and down reciprocating motion relative to the support plate (200); The drive assembly (300) comprises an eccentric component (320) and a transmission component (330); The eccentric member (320) is mounted on the driving end of the servo motor (310), one end of the transmission member (330) is connected to the eccentric member (320), and the other end of the transmission member (330) is connected to the test assembly (400), and the eccentric member (320) is configured to drive the transmission member (330) to reciprocate up and down; The eccentric component (320) comprises an eccentric piece (321) and a fixing piece (322); The fixing member (322) is connected to the driving end of the servo motor (310), the eccentric member (321) is detachably connected to the fixing member (322), the eccentric member (321) is provided with a mounting hole, and the fixing member (322) is provided with a plurality of adjustment holes; When the mounting hole is connected to the adjustment hole located in the middle, the fixing member (322) and the eccentric member (321) are in a coaxial state; when the mounting hole is connected to the adjustment hole at a non-middle position, the fixing member (322) and the eccentric member (321) are in an eccentric state; when the fixing member (322) drives the eccentric member (321) to rotate, the transmission member (330) can move up and down.

2. The key load life testing device according to claim 1, characterized in that: The transmission component (330) comprises a transmission vertical plate (331), a transmission horizontal plate (332) and a transmission optical axis (333); The transmission vertical plate (331) is provided with a connecting groove, one end of the eccentric member (320) has a snap-on bearing, the snap-on bearing extends into the connecting groove, the transmission vertical plate (331) is connected to the transmission horizontal plate (332), one end of the transmission optical axis (333) is connected to the transmission horizontal plate (332), and the other end of the transmission optical axis (333) is connected to the test assembly (400).

3. The key load life testing device according to claim 1, characterized in that: The key load life testing device further includes a bottom plate (500); The bottom plate (500) is installed on the top of the chassis body (100), and the bottom plate (500) is connected to the support plate (200).

4. The key load life testing device according to claim 3, characterized in that: The key load life test device further includes a stepping motor (600); The stepper motor (600) is connected to the base plate (500), a driving end of the stepper motor (600) passes through the base plate (500) and is connected to the support plate (200), and the stepper motor (600) is configured to be able to drive the support plate (200) to move relative to the base plate (500).

5. The key load life testing device according to claim 1, characterized in that: The key load life testing device further comprises a CCD camera (700); The CCD camera (700) is connected to the chassis body (100), the CCD camera (700) is capable of capturing images of the device under test, and the CCD camera (700) is configured to be connected to a server via Ethernet.

6. The key load life testing device according to claim 1, characterized in that: A touch screen (800) is provided on the chassis body (100), and the touch screen (800) is used for electrical connection with a lower machine.

7. The key load life testing device according to claim 1, characterized in that: A force sensor is provided on the support plate (200), and the force sensor is configured to detect the striking force applied to the device to be tested, and transmit the striking force information to the host computer via a force transmitter.

8. The key load life testing device according to claim 1, characterized in that: A photoelectric sensor is provided in the chassis body (100); The photoelectric sensor is configured to detect the height position of the driving component (300) and transmit the height position information to the lower computer.

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