Folding key durability test tool

Abstract

The utility model provides a folding key durability test tool, which comprises a power supply, a key fixing part, a key pushing part, a control panel, a motor, a microswitch, a pneumatic electromagnetic valve and an air cylinder, the power supply supplies power to the test tool, the key fixing part is used for fixing a folding key and the air cylinder, and a piston rod of the air cylinder is aligned with a button of the folding key; one end of the key pushing part is connected with the motor; the control panel comprises an MCU and a CAN bus, the MCU is electrically connected with the motor, and the MCU is connected with the CAN bus; the pneumatic electromagnetic valve is connected with a power source through the microswitch and connected with the air cylinder through the air conveying pipe, and the microswitch is located at one end of the rotating stroke of the key pushing part. The microswitch is used for controlling starting and stopping of the air cylinder, the air cylinder is used for pressing the button to enable the key piece to pop out, the motor is used for driving the key piece to rotate to enable the key piece to be folded into the key handle, the structure is simple, the CAN bus is used for transmitting motor thrust data, and a tester can conveniently monitor performance changes of the folded key.

Description

Technical Field

[0001] The utility model relates to the field of key performance testing devices, in particular to a durability testing tooling for folding keys. Background Technique

[0002] The existing folding key consists of an upper cover, a lower cover, a button, a remote control chip, and a key blade. The upper cover and the lower cover are snapped together to form a key handle, and an accommodating space is formed inside to accommodate the remote control chip. A button is arranged on the upper cover. A key rotating shaft is arranged at one corner of the upper cover and the lower cover to connect the key blade to the key handle, so that the key blade can rotate 180° around the key rotating shaft to realize the folding of the key. When the key is needed, press the button, and the key blade will automatically pop out; when the key is not needed, fold the key blade into the key handle by hand.

[0003] The durability of the folding key itself determines its service life and directly affects its safety. Therefore, it is necessary to conduct detection tests on each component of the folding key, mainly the durability of the rotation of the key blade of the folding key. The utility model patent with the publication number of CN202119616U discloses an automobile key folding test device, which includes a base, a key pressing device, a button opening device, a key seat, and a fixed seat; the key pressing device is connected to the fixed seat; the button opening device is fixedly connected to the fixed seat; the fixed seat is fixedly connected to the base; the key seat is fixedly connected to the base; the automobile key folding test device further includes a runner and a runner seat; the runner is pivotally connected to the runner seat; the runner seat is fixedly connected to the base; a key lever is arranged on the front end face of the runner; a runner driving mechanism is arranged between the runner and the base. By using the runner driving mechanism to drive the runner to rotate and revolve, simulating the operation of the operator to open or close the key, the reliability and durability of various different specifications of automobile folding keys can be tested.

[0004] However, the automobile key folding test device disclosed in the above patent adopts a multi-cylinder drive and a transmission mode of a pull rope and a lever, with a complex structure, low working efficiency, and unstable test process. Content of the Utility Model

[0005] Based on the defects existing in the prior art, the utility model provides a durability test tooling for a folding key, which is characterized by comprising a power supply, a key fixing part, a key pushing part, a control board, a motor, a microswitch, a pneumatic solenoid valve and a cylinder. The power supply supplies power to the test tooling. The key fixing part is used for fixing the folding key and the cylinder, and the piston rod of the cylinder is aligned with the button of the folding key. One end of the key pushing part is connected to the motor and is used for pushing the key blade into the key handle. The control board includes an MCU and a CAN bus. The MCU is electrically connected to the motor, and the MCU is connected to the CAN bus. The pneumatic solenoid valve is connected to the power supply through the microswitch, and the pneumatic solenoid valve is connected to the cylinder through an air pipe. The microswitch is located at one end of the rotation stroke of the key pushing part.

[0006] Further, it includes a host computer, which is connected to the CAN bus through a serial communication interface and is used for reading the motor thrust data.

[0007] Further, the control board includes a storage chip, and the storage chip is connected to the MCU and is used for storing the motor thrust data.

[0008] Further, it includes a counter, and the counter is connected to the pneumatic solenoid valve and the power supply.

[0009] Further, it includes a constant temperature test chamber, which is used for setting different temperature environments for the test tooling.

[0010] Further, it includes a temperature sensor, and the temperature sensor is connected to the MCU.

[0011] Further, it includes a potentiometer, and the potentiometer is connected to the motor and the MCU and is used for recording the position of the key pushing part controlled by the motor.

[0012] Further, it includes an air compressor. The air compressor is connected to a pressure regulating valve through an air pipe, and the pressure regulating valve is connected to the pneumatic solenoid valve through an air pipe.

[0013] Further, a pressing part for pressing the button of the folding key is connected to the end of the piston rod of the cylinder, and the pressing part is made of an elastic material.

[0014] Further, the key fixing part is made of a plastic material.

[0015] Beneficial effects:

[0016] The technical solution of the present utility model realizes the folding and popping of the folding key by setting a cylinder to press the button of the folding key to pop out the key blade, and setting a motor to drive the key pushing part to rotate the key blade of the folding key so that the key blade folds into the key handle, with a simple structure. The start and stop of the cylinder are controlled by a microswitch, and the forward and reverse rotation of the motor is controlled by an MCU. Compared with the transmission method of the pull rope and the lever in the prior art, the working efficiency is high and the test process is stable.

[0017] In addition, the host computer can read the thrust data of the motor through the CAN bus and form a pressure change curve graph, which is convenient for testers to monitor the performance of the folding key and more accurately detect whether the product structure and components are reliable.

[0018] The MCU can control the speed of the motor, and thus can adjust the retracting and extending speed and the pause time of the folding key, which can better simulate various user habit scenarios and better detect the service life of various user habit scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings only make schematic illustrations and explanations of the present utility model and do not limit the scope of the present utility model.

[0020] Figure 1 It is an overall schematic diagram of an embodiment of the present utility model.

[0021] Figure 2 It is a schematic diagram of the test bench structure of an embodiment of the present utility model.

[0022] Figure 3 It is a circuit schematic diagram of an embodiment of the present utility model.

[0023] Description of the reference numerals: 1. Test bench; 2. Key fixing part; 3. Cylinder; 4. Key pushing part; 5. Motor; 6. Power switch; 7. Start switch; 8. Microswitch; 9. Counter; 10. Serial communication interface; 11. Pressing part; 12. Control board; 13. Pneumatic solenoid valve; 14. Power supply. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to have a clearer understanding of the technical features, purposes and effects of this article, the specific embodiments of the present utility model are now described with reference to the drawings, and the same reference numerals in each figure represent the same parts. To make the drawings concise, the relevant parts of the present utility model are schematically shown in each figure, and do not represent its actual structure as a product. In addition, for the sake of simplicity and understanding of the drawings, in some figures, components with the same structure or function are only schematically shown or only one of them is marked.

[0025] In the present utility model, "connection" can include both direct connection and indirect connection, communication connection, and electrical connection, unless otherwise specified.

[0026] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present disclosure. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that when used in the specification, the terms "comprises" and / or "comprising" mean the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the recited related items.

[0027] The present utility model provides a folding key durability test tooling. Refer to Figure 1 , which includes a test bench 1. A key fixing part 2 is installed on the surface of the test bench 1. The key fixing part 2 includes a fixing groove for embedding a folding key. A cylinder 3 is installed on the top of the key fixing part 2. When the folding key is embedded in the fixing groove, the piston rod of the cylinder 3 is aligned with the button of the folding key.

[0028] A key pushing part 4 and a motor 5 are fixed between the key fixing part 2 and the surface of the test bench 1. In this embodiment, the key pushing part 4 is arranged in a rocker arm shape. One end of the key pushing part 4 is connected to the motor 5, and the other end of the key pushing part 4 abuts against the key blade that pops out of the folding key, for pushing the key blade into the key handle. In order to reduce damage to the folding key, the key fixing part 2 is made of plastic material.

[0029] Refer to Figure 1 and Figure 2 , a power supply 14 and a control board 12 are installed inside the test bench 1. A power switch 6 and a start switch 7 are installed on the outer wall of the test bench 1. The control board 12 is connected to the power supply 14 through the power switch 6, and the motor 5 is connected to the power supply 14 through the start switch 7. When the power switch 6 and the start switch 7 are turned on, the motor 5 starts, driving the key pushing part 4 to rotate, and pushing the key blade to fold into the key handle.

[0030] In order to enable the automatic progress of the entire test work, as Figure 3 shown, an MCU and a motor driver are provided on the control board 12. The MCU is connected to the motor 5 through the motor driver. With the help of the motor driver, the MCU can control the forward rotation, reverse rotation, and pause of the motor 5, and can adjust the rotation speed and pause time of the motor 5 according to the test needs, so as to better simulate various user habit scenarios, and then detect the service life of the folding key under various user habit scenarios.

[0031] When the motor 5 drives the key pushing part 4 to rotate and folds the key blade into the key handle, the piston rod of the air cylinder 3 is used to press the button to pop up the key blade again, so as to perform the next cycle of testing. In order to realize the automatic operation of the air cylinder 3, a microswitch 8 is installed on the tabletop of the test bench 1, and the microswitch 8 is at the end far from the key handle during the rotation stroke of the key pushing part 4. An air-operated solenoid valve 13 is also installed inside the test bench 1. The air-operated solenoid valve 13 is connected to the power supply 14 through the microswitch 8. The air inlet of the air-operated solenoid valve 13 is connected to the pressure regulating valve through an air pipe, and the pressure regulating valve is connected to the air compressor through an air pipe to provide air source for the test tooling by the air compressor. The two air outlets of the air-operated solenoid valve 13 are respectively connected to both ends of the air cylinder 3 through air pipes.

[0032] When the key pushing part 4 pushes the key blade into the key handle, in order to reverse the motor 5, a status signal, that is, the position threshold value of the rotation of the key pushing part 4 driven by the motor 5, needs to be sent to the program control function for controlling the motor 5. A potentiometer is arranged on the control board 12. The potentiometer is connected to the motor 5 and the MCU and is used to record the position of the key pushing part 4 controlled by the motor 5. When the key pushing part 4 is respectively at both ends of the rotation stroke, the potentiometer feeds back the position signal to the MCU, so that the MCU sends a driving signal to the motor 5 to switch the running mode of the motor 5.

[0033] The motor 5 reverses and drives the key pushing part 4 to rotate towards the direction of the microswitch 8. When the key pushing part 4 touches the microswitch 8, the microswitch 8 is turned on, and then the air-operated solenoid valve 13 is turned on. The gas enters the air cylinder 3 through the air-operated solenoid valve 13, and the air cylinder 3 works, and its piston rod extends to press the button of the folding key, and the key blade of the folding key pops up. After a preset delay time, the motor 5 rotates forward again. At this time, the key pushing part 4 leaves the microswitch 8, so that the microswitch 8 is turned off, and thus the air-operated solenoid valve 13 stops working. The air enters the air cylinder 3 through the other air outlet of the air-operated solenoid valve 13, and the piston rod of the air cylinder 3 retracts. And the key pushing part 4 pushes the key blade to fold into the key handle again under the push of the motor 5.

[0034] In order to reduce the impact of the piston rod on the button of the folding key, a pressing part 11 for pressing the button of the folding key is connected to the end of the piston rod of the air cylinder 3, and the pressing part 11 is made of an elastic material.

[0035] A counter 9 is also installed on the outer wall of the test bench 1 where the power switch 6 is installed. The counter 9 is connected to the power supply 14, and the signal terminal of the counter 9 is connected to the air-operated solenoid valve 13. Each time the air-operated solenoid valve 13 works, it sends a signal to the counter 9, and the counter 9 counts once, representing the completion of a durability test cycle. Thus, the counter 9 can be used to record and monitor the number of tests.

[0036] In order to more accurately monitor the state of the folding key, the motor 5 feeds back the thrust data in each test cycle to the MCU. The control board 12 is also provided with a CAN transceiver, a CAN bus, and a storage chip. The MCU is connected to the CAN bus via the CAN transceiver, and the MCU is connected to the storage chip. The storage chip is used to store the thrust data of the motor 5. In this embodiment, the storage chip can retain 50,000 experimental thrust data.

[0037] The test fixture also includes a host computer. A serial communication interface 10 is also installed on the outer wall of the test bench 1 where the power switch 6 is installed. The host computer is connected to the CAN bus through the serial communication interface 10. The MCU reads the thrust data of the motor 5 from the storage chip and sends it to the host computer through the CAN bus. The host computer forms a pressure change curve according to the number of tests and the corresponding thrust data of the motor 5, so that the user can observe the thrust change of the motor 5 and effectively monitor the endurance pressure change of the internal structure of the folding key.

[0038] In order to enhance the expansibility of the test tool, the test tool also includes a constant temperature test box. The temperature adjustment of the constant temperature test box is achieved by a built-in temperature sensor in the box, collecting data, adjusting it through a temperature controller (micro information processor), connecting an air heating unit to increase the temperature or adjusting a refrigeration solenoid valve to reduce the temperature in the box to achieve the required temperature. Therefore, the constant temperature test box can be used to set different temperature environments for the test tool, so that the durability of the folding key at different temperatures can be tested. In order to facilitate monitoring of experimental data, a temperature sensor is also provided on the control board 12, and the temperature sensor is connected to the MCU. The temperature sensor collects temperature data and feeds it back to the MCU, and the MCU then sends it to the host computer through the CAN bus, which is convenient for test personnel to monitor the temperature.

[0039] The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment. It is clear to those skilled in the art that the form in the embodiment is not limited thereto, and the adjustable manner is not limited thereto. It is understood that other improvements and changes directly derived or associated with by those skilled in the art without departing from the basic concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A folding key durability test tool, characterized in that: It includes a power supply, a key fixing part, a key pushing part, a control panel, a motor, a micro switch, a pneumatic solenoid valve, and a cylinder. The power supply is used to power the test fixture. The key fixing part is used to fix the folding key and the cylinder, and the piston rod of the cylinder is aligned with the button of the folding key. One end of the key pushing part is connected to the motor to push the key blade into the key handle. The control panel includes an MCU and a CAN bus. The MCU is electrically connected to the motor, and the MCU is connected to the CAN bus. The pneumatic solenoid valve is connected to the power supply through a micro switch, and the pneumatic solenoid valve is connected to the cylinder through an air pipe. The micro switch is located at one end of the rotation stroke of the key pushing part.

2. A folding key durability test tool as claimed in claim 1, characterized in that: The system comprises a host computer, which is connected to the CAN bus via a serial communication interface and is used for reading motor thrust data.

3. A folding key durability testing tool as claimed in claim 1, characterized in that: The control board includes a storage chip, which is connected to the MCU and is used to store motor thrust data.

4. A folding key durability testing tool as claimed in claim 1, characterized in that: A counter is included, and the counter is connected to the pneumatic solenoid valve and the power supply.

5. A folding key durability testing tool as claimed in claim 1, characterized in that: Includes a constant temperature test chamber to set different temperature environments for the test fixture.

6. A folding key durability testing tool as claimed in claim 5, characterized in that: A temperature sensor is included, and the temperature sensor is connected to the MCU.

7. A folding key durability testing tool as claimed in claim 1, characterized in that: It includes a potentiometer, which is connected to the motor and the MCU and is used to record the position of the key push part controlled by the motor.

8. A folding key durability testing tool as claimed in claim 1, characterized in that: The utility model comprises an air compressor, wherein the air compressor is connected with a pressure regulating valve through an air supply pipe, and the pressure regulating valve is connected with a pneumatic solenoid valve through the air supply pipe.

9. A folding key durability testing tool as claimed in claim 1, characterized in that: The end of the piston rod of the cylinder is connected with a pressing part for pressing the button of the folding key, and the pressing part is made of elastic material.

10. A folding key durability testing tool as claimed in claim 1, characterized in that: The key fixing part is made of plastic material.

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