Performance detection device of automobile door lock and detection method thereof

Abstract

The invention discloses a performance detection device of an automobile door lock and a detection method thereof. The performance detection device for the automobile door lock comprises a driving part, a detection part and a control part, wherein the driving part is used for applying locking force to the automobile door lock so as to lock the automobile door lock; the first pressure sensor is mounted between the driving piece and the automobile door lock and used for monitoring locking force applied to the automobile door lock by the driving piece in the locking process of the door lock in real time; one end of the spring is connected with the side, away from the driving part, of the automobile door lock, and the spring is used for applying unlocking force to the automobile door lock so as to unlock the automobile door lock; the second pressure sensor is mounted between the spring and the automobile door lock and is used for monitoring the unlocking force applied to the automobile door lock by the spring in real time; the performance of the automobile door lock is efficiently and accurately detected through an automatic means, the detection efficiency is improved, and powerful support is provided for product quality control.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts detection, and in particular to a performance detection device and a detection method for an automobile door lock. Background Art

[0002] With the development of the automobile industry, people pay more and more attention to the safety and reliability of automobiles. As one of the important components of automobiles, the performance of door locks directly affects the overall safety and user experience of automobiles.

[0003] Traditional methods for testing the performance of automobile door locks mostly use manual testing or simple mechanical testing, which has problems such as low efficiency and insufficient precision. Therefore, it is particularly important to develop a device that can efficiently and accurately test the performance of automobile door locks. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a performance detection device for a car door lock, comprising: A driving member, the driving member is used to apply a locking force to the automobile door lock to achieve locking of the automobile door lock; A first pressure sensor is installed between the driving member and the automobile door lock, and is used to monitor in real time the locking force applied by the driving member to the automobile door lock during the locking process of the door lock; A spring, one end of which is connected to a side of the automobile door lock facing away from the driving member, and the spring is used to apply an unlocking force to the automobile door lock to unlock the automobile door lock; The second pressure sensor is installed between the spring and the car door lock, and is used for real-time monitoring of the unlocking force applied by the spring to the car door lock.

[0005] Wherein, the other end of the spring is connected to an adjusting member, and the compression length of the spring is changed by the adjusting member to thereby adjust the unlocking force applied by the spring to the car door lock.

[0006] Wherein, the performance monitoring device of the automobile door lock further includes: A controller, configured to receive data from the first pressure sensor and the second pressure sensor and process and analyze the detection results; A display unit is connected to the controller and is used to display the force variation curves of the locking process and the unlocking process of the vehicle door lock.

[0007] Among them, the force change curve of the locking process of the automobile door lock has a first sudden drop point; the pressure value of the first pressure sensor at the time corresponding to the first sudden drop point is the locking forward force; the pressure value of the second pressure sensor at the time corresponding to the first sudden drop point is the locking reverse force; the difference between the locking forward force and the locking reverse force is the actual locking force; the force change curve of the unlocking process of the automobile door lock has a second sudden drop point, and the unlocking force corresponding to the second sudden drop point is the actual unlocking force of the automobile door lock.

[0008] Among them, a locking error is obtained based on a comparison between the actual locking force of the car door lock and the theoretical locking force; an unlocking error is obtained based on a comparison between the actual unlocking force of the car door lock and the theoretical unlocking force; and a performance test result of the car door lock is obtained based on the locking error and the unlocking error.

[0009] The present invention also provides a vehicle door lock detection method which can be applied to the vehicle door lock performance detection device as described in any one of the above items, and the vehicle door lock detection method comprises the following steps: Fix the automobile door lock to be tested on the testing platform, connect the driving part and the automobile door lock, and ensure that the first pressure sensor is correctly installed; Turn on the controller and set the detection parameters; the controller sends instructions to the driver to lock the car door lock; After locking is completed, the car door lock is unlocked based on the spring and the adjustment member; The display unit shows the final test results and analysis report.

[0010] Among them, when the driving member locks the car door lock, the spring will be compressed to apply thrust to the car door lock; before the car door lock is unlocked, the compression length of the spring is adjusted based on the adjustment member to the value of the second pressure sensor as the theoretical unlocking force.

[0011] The detection parameters include the number of tests and the lock-unlock interval to meet the testing requirements of different types of door locks.

[0012] Beneficial effects of the invention: Different from the prior art, the invention discloses a performance detection device and a detection method for a car door lock; the performance detection device for the car door lock comprises: a driving member, the driving member is used to apply a locking force to the car door lock to achieve locking of the car door lock; a first pressure sensor, installed between the driving member and the car door lock, and used to monitor in real time the locking force applied by the driving member to the car door lock during the locking process of the door lock; a spring, one end of the spring is connected to a side of the car door lock away from the driving member, and the spring is used to apply an unlocking force to the car door lock to achieve unlocking of the car door lock; a second pressure sensor, installed between the spring and the car door lock, and used to monitor in real time the unlocking force applied by the spring to the car door lock; efficient and accurate detection of the performance of the car door lock is achieved through automated means, which not only improves the detection efficiency, but also provides strong support for product quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a first embodiment of a performance detection device for a vehicle door lock provided by the present invention; Figure 2 A schematic structural diagram of a second embodiment of a performance detection device for a vehicle door lock provided by the present invention; Figure 3 A schematic structural diagram of a third embodiment of a performance detection device for a vehicle door lock provided by the present invention; Figure 4 The present invention is a flow chart of an embodiment of a vehicle door lock detection method provided by the present invention. DETAILED DESCRIPTION

[0014] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0015] like Figure 1 As shown, Figure 1 This is a structural schematic diagram of a first embodiment of a performance detection device for a vehicle door lock provided by the present invention; the performance detection device for a vehicle door lock comprises a driving member, a first pressure sensor, a spring, and a second pressure sensor.

[0016] The driving member is used to apply locking force to the car door lock to achieve locking of the car door lock; the driving member applies locking force to the car door lock to achieve automatic operation, and the automatic operation ensures the consistency of each detection condition and reduces human errors; in one embodiment, the driving member can be a servo electric cylinder, and the working state of the servo electric cylinder can be adjusted by the controller.

[0017] The first pressure sensor is installed between the driver and the car door lock, and is used to monitor the locking force applied by the driver to the car door lock during the locking process in real time; the first pressure sensor monitors the locking force applied by the driver to the car door lock during the locking process in real time; the first pressure sensor transmits the collected data to the controller in real time; the controller records the force value changes during the locking process and generates a locking force change curve of the car door lock; real-time monitoring of the force value changes during the locking process can timely detect abnormal conditions during the detection process to prevent damage to the equipment or door lock. After the car door lock is locked, the driver no longer applies a locking force to the car door lock, and whether the car door lock is locked can be obtained through the locking force change curve.

[0018] One end of the spring is connected to the side of the car door lock away from the driving member, and the spring is used to apply an unlocking force to the car door lock to unlock the car door lock; when the driving member locks the car door lock, the spring will be deformed due to the connection with the car door lock, and then apply an unlocking force to the car door lock to unlock the door lock; the second pressure sensor monitors the unlocking force applied by the spring to the car door lock in real time during the unlocking process, and transmits the data to the controller. The car door lock includes an actuator. When the controller sends an unlocking signal, the actuator will unlock, and then the spring can apply an unlocking force to the car door lock to unlock; if the controller does not send an unlocking signal, the actuator is locked, and even if the spring applies an unlocking force to the car door lock, the car door lock will not unlock.

[0019] The second pressure sensor is installed between the spring and the car door lock, and is used to monitor the unlocking force applied by the spring to the car door lock in real time; by installing the second pressure sensor between the spring and the car door lock, real-time monitoring of the unlocking force applied by the spring to the car door lock during the unlocking process is achieved.

[0020] In summary, the present invention discloses a performance detection device and a detection method for a car door lock; the performance detection device for the car door lock comprises: a driving member, the driving member is used to apply a locking force to the car door lock to achieve locking of the car door lock; a first pressure sensor, installed between the driving member and the car door lock, and used to monitor in real time the locking force applied by the driving member to the car door lock during the locking process of the door lock; a spring, one end of the spring is connected to a side of the car door lock away from the driving member, and the spring is used to apply an unlocking force to the car door lock to achieve unlocking of the car door lock; a second pressure sensor, installed between the spring and the car door lock, and used to monitor in real time the unlocking force applied by the spring to the car door lock; efficient and accurate detection of the performance of the car door lock is achieved through automated means, which not only improves the detection efficiency, but also provides strong support for product quality control.

[0021] In one embodiment, if Figure 2 As shown, Figure 2 A schematic structural diagram of a second embodiment of a performance detection device for a vehicle door lock provided by the present invention; The performance monitoring device for the automobile door lock also includes an adjusting member; the other end of the spring is connected to the adjusting member, and the spring compression length is changed by the adjusting member to adjust the unlocking force applied by the spring to the automobile door lock so that the automobile door lock can be unlocked normally; the unlocking force of the spring on the automobile door lock is obtained by the second pressure sensor, and compared with the theoretical unlocking force, and the spring compression length is changed by the adjusting member to adjust the unlocking force applied by the spring to the automobile door lock to the theoretical unlocking force of the automobile door lock. For example, the theoretical unlocking force of the automobile door lock is 30N, the unlocking force provided by the spring is 40N at the beginning, and the compression length is 4CM; the spring compression length is changed to 3CM by the adjusting member, so that the unlocking force provided by the spring is 30N.

[0022] During the process of the driving member locking the car door lock, the spring is compressed because the spring is connected to the car door lock through the second pressure sensor; but the compression force caused by the compressed length of the spring may be greater than or less than the unlocking force of the car door lock; for example, the compression force of the spring is greater than the theoretical unlocking force of the car door lock, and when the controller sends an unlocking signal, the car door lock is unlocked, but at this time the unlocking force of the spring is greater than the theoretical unlocking force of the car door lock, and it is impossible to correctly judge whether the car door lock can be unlocked normally at the theoretical unlocking force; by changing the compressed length of the spring through the adjusting member and then adjusting the unlocking force applied to the car door lock by the spring, the car door lock can be unlocked normally, thereby improving the accuracy of performance detection and improving the reliability of detection.

[0023] In one embodiment, if Figure 3 As shown, Figure 3 A schematic structural diagram of a third embodiment of a performance detection device for a vehicle door lock provided by the present invention; The performance monitoring device for a car door lock also includes a controller and a display unit; the controller is used to receive data from the first pressure sensor and the second pressure sensor and process and analyze the test results; the controller processes and analyzes the data to generate a detailed force change curve, which helps the user to intuitively understand the force value changes during the locking and unlocking process, and the real-time data display helps the operator to understand the test progress and status at any time.

[0024] The controller is also connected to the actuator in the car door lock. The controller can send an unlocking signal to the actuator so that the spring can unlock the car door lock. After locking is completed, the actuator will send a locked signal of the car door lock to the controller, and calibrate the signal sent by the actuator with the force change curve of the locking process generated by the first pressure sensor to obtain a more accurate correct locking time of the car door lock.

[0025] The display unit is connected to the controller to display the force change curve of the locking and unlocking process of the car door lock; the display unit intuitively displays the force value change and final result during the locking and unlocking process, which is convenient for users to understand and operate. Real-time data display and detailed test reports provide users with clear operation guidance and result feedback.

[0026] In summary, by receiving data from the first pressure sensor and the second pressure sensor and processing and analyzing the detection results through the controller, and connecting the display unit to the controller to display the force change curve during the locking and unlocking process, efficient and accurate detection of the performance of the automobile door lock is achieved; the accuracy and reliability of the detection data are improved, and the adaptability and user-friendliness of the performance monitoring device are enhanced.

[0027] In one embodiment, there is a first sudden drop point in the force change curve of the locking process of the automobile door lock; the pressure value of the first pressure sensor at the time corresponding to the first sudden drop point is the locking forward force; the pressure value of the second pressure sensor at the time corresponding to the first sudden drop point is the locking reverse force; the difference between the locking forward force and the locking reverse force is the actual locking force; there is a second sudden drop point in the force change curve of the unlocking process of the automobile door lock, and the unlocking force corresponding to the second sudden drop point is the actual unlocking force of the automobile door lock.

[0028] For example, the locking positive force of the first pressure sensor at the first sudden drop point is 130N, and the locking reverse force of the second pressure sensor at the first sudden drop point is 30N, then the actual locking force is 100N; the driving part will compress the spring during the locking process of the car door lock, causing the spring to generate a locking reverse force, and the first pressure sensor only represents the locking positive force applied by the driving part to the car door lock. The total external force of the car door lock is obtained after the locking positive force offsets the locking reverse force.

[0029] In one embodiment, a locking error is obtained based on a comparison between the actual locking force of the car door lock and the theoretical locking force; an unlocking error is obtained based on a comparison between the actual unlocking force of the car door lock and the theoretical unlocking force; and a performance test result of the car door lock is obtained based on the locking error and the unlocking error.

[0030] Different car door locks correspond to different theoretical locking forces and theoretical unlocking forces. If the locking error is greater than the first preset error value, the locking performance of the car door lock is judged to be poor. If the unlocking error is greater than the second preset error value, the unlocking performance of the car door lock is judged to be poor. The performance monitoring result of the car door lock is output based on the locking performance and unlocking performance of the car door lock. It should be clarified that the first preset error and the second preset error can be set for different car door locks, and the first preset error and the second preset error can be equal or different, and no limitation is made here.

[0031] The present invention also provides a vehicle door lock detection method, which can be applied to the vehicle door lock performance detection device as described in any of the above items, such as Figure 4 As shown, Figure 4 This is a flow chart of an embodiment of a vehicle door lock detection method provided by the present invention. The vehicle door lock detection method comprises the following steps: Step S11: fix the automobile door lock to be tested on the testing platform, connect the driving member and the automobile door lock, and ensure that the first pressure sensor is correctly installed; the first pressure sensor obtains the locking force during the locking process and sends it to the controller; Step S12: Turn on the controller and set the detection parameters; the controller sends a command to the driver to lock the car door lock; Step S13: After locking is completed, the vehicle door lock is unlocked based on the spring and the adjusting member; the second pressure sensor obtains the unlocking force of the unlocking process and sends it to the controller; Step S14: The controller generates a locking force variation curve and an unlocking force variation curve based on the received locking force and unlocking force; obtains a locking error and an unlocking error based on the locking force variation curve and the unlocking force variation curve; obtains a performance test result of the vehicle door lock based on the locking error and the unlocking error; the controller sends the locking force variation curve, the unlocking force variation curve and the performance test result to the display unit; and the display unit displays the final test result and analysis report.

[0032] In one embodiment, when the driving member locks the car door lock, the spring will be compressed to apply thrust to the car door lock; before the car door lock is unlocked, the compressed length of the spring is adjusted based on the adjusting member until the value of the second pressure sensor is the theoretical unlocking force. Before unlocking, the compressed length of the spring is adjusted by the adjusting member until the value of the second pressure sensor is the theoretical unlocking force, ensuring that the conditions for each test are consistent, thereby improving the standardization and repeatability of the test.

[0033] In one embodiment, the detection parameters include the number of tests and the lock-unlock interval time to adapt to different types of door lock testing requirements; for example, for manual locks, a smaller number of tests can be set; for electric locks, a larger number of tests can be set to simulate long-term use. For example, for frequently used door locks, a shorter interval time can be set; for infrequently used door locks, a longer interval time can be set.

[0034] Multiple tests can improve the accuracy and reliability of the test results and reduce the impact of accidental errors; different locking-unlocking intervals can better simulate various situations in actual use and ensure the authenticity and effectiveness of the test results.

[0035] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A performance detection device for a car door lock, characterized in that: include: A driving member, the driving member is used to apply a locking force to the automobile door lock to achieve locking of the automobile door lock; A first pressure sensor is installed between the driving member and the automobile door lock, and is used to monitor in real time the locking force applied by the driving member to the automobile door lock during the locking process of the door lock; A spring, one end of which is connected to a side of the automobile door lock facing away from the driving member, and the spring is used to apply an unlocking force to the automobile door lock to unlock the automobile door lock; The second pressure sensor is installed between the spring and the car door lock, and is used for real-time monitoring of the unlocking force applied by the spring to the car door lock.

2. The performance detection device for automobile door locks according to claim 1, characterized in that: The other end of the spring is connected to an adjusting member, and the adjusting member is used to change the compression length of the spring and thereby adjust the unlocking force applied by the spring to the car door lock.

3. The performance detection device for automobile door lock according to claim 2, characterized in that: The performance monitoring device of the automobile door lock also includes: A controller, configured to receive data from the first pressure sensor and the second pressure sensor and process and analyze the detection results; A display unit is connected to the controller and is used to display the force variation curves of the locking process and the unlocking process of the vehicle door lock.

4. The performance detection device for automobile door locks according to claim 3, characterized in that: The force variation curve of the locking process of the automobile door lock has a first sudden drop point; the pressure value of the first pressure sensor at the time corresponding to the first sudden drop point is the locking positive force; the pressure value of the second pressure sensor at the time corresponding to the first sudden drop point is the locking reverse force; The difference between the positive locking force and the reverse locking force is the actual locking force; There is a second sudden drop point in the force variation curve of the unlocking process of the automobile door lock, and the unlocking force corresponding to the second sudden drop point is the actual unlocking force of the automobile door lock.

5. The performance detection device for automobile door lock according to claim 4, characterized in that: A locking error is obtained based on a comparison between the actual locking force of the automobile door lock and the theoretical locking force; an unlocking error is obtained based on a comparison between the actual unlocking force of the automobile door lock and the theoretical unlocking force; and a performance test result of the automobile door lock is obtained based on the locking error and the unlocking error.

6. A method for detecting a car door lock, which can be applied to the performance detection device for a car door lock as claimed in any one of claims 1 to 5, characterized in that: The automobile door lock detection method comprises the following steps: Fix the automobile door lock to be tested on the testing platform, connect the driving part and the automobile door lock, and ensure that the first pressure sensor is correctly installed; Turn on the controller and set the detection parameters; the controller sends instructions to the driver to lock the car door lock; After locking is completed, the car door lock is unlocked based on the spring and the adjustment member; The display unit shows the final test results and analysis report.

7. The automobile door lock detection method according to claim 6, characterized in that: When the driving member locks the car door lock, the spring will compress and apply thrust to the car door lock; before unlocking the car door lock, the compression length of the spring is adjusted based on the adjusting member until the value of the second pressure sensor is the theoretical unlocking force.

8. The automobile door lock detection method according to claim 7, characterized in that: The detection parameters include the number of tests and the lock-unlock interval to meet the testing requirements of different types of door locks.

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