CN-122016287-A - Automobile door lock unlocking performance detection device and detection method based on multi-working condition simulation

CN122016287ACN 122016287 ACN122016287 ACN 122016287ACN-122016287-A

Abstract

The invention relates to the technical field of automobile part detection, in particular to an automobile door lock unlocking performance detection device and method based on multi-working condition simulation. The device comprises a frame, a clamping and positioning unit, a lock tongue state simulation unit, an unlocking driving unit, a telecommunication connection unit and a central control unit. The clamping unit is provided with a quick-change jig and a pneumatic clamping mechanism, the simulation unit simulates the state of the lock tongue through the cylinder and the spring, and the unlocking unit drives the inhaul cable to act by utilizing the servo module. The invention integrates a flexible driving framework, can complete full/half lock unlocking, electric unlocking, self-priming, power-off emergency, DISENGAGE pawl and other full-dimension detection in one detection period, solves the problems of single function and incomplete working condition simulation of the existing equipment, and improves the detection efficiency and precision.

Inventors

ZHANG GUIZHOU
Wei Tingbang
ZHOU HAITAO
Jia guotai

Assignees

昆山倚天智能科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260311

Claims (10)

1. The automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized by comprising an equipment rack, a door lock clamping and positioning unit, a lock tongue state simulation unit, an unlocking driving unit, a telecommunication connection unit, a central control and data processing unit and a code scanning unit, wherein the door lock clamping and positioning unit is arranged on a working platform of the equipment rack; the door lock clamping and positioning unit is used for performing multi-degree-of-freedom space constraint and posture reduction on an automobile door lock to be tested, the lock tongue state simulation unit is configured to simulate physical engagement working conditions of the automobile door lock in a full-lock state and a half-lock state through coupling of a multi-stage pneumatic drive and an elastic compensation mechanism, the lock tongue state simulation unit is arranged behind the door lock clamping and positioning unit, the unlocking drive unit is configured to simulate force application actions of a person or an actuating mechanism on a inhaul cable and collect moment and travel data in real time in the unlocking process, the unlocking drive unit is arranged above the door lock clamping and positioning unit, the telecommunication connection unit is used for establishing a communication link and a power supply loop between the central control and data processing unit and an electronic control unit of the automobile door lock, the telecommunication connection unit is arranged around the door lock clamping and positioning unit, the code scanning unit is used for identifying identity information of the automobile door lock and capturing physical position characteristics of a lock catch in real time, the code scanning unit is arranged between the door lock clamping and the lock tongue state simulation unit, and the central control and the lock tongue state simulation unit are respectively used for establishing a communication link between the central control and the lock tongue state simulation unit and the telecommunication connection unit The unlocking driving unit, the telecommunication connection unit and the code scanning unit are electrically connected and used for coordinating action logic of each unit and carrying out data analysis and judgment.
2. The automobile door lock unlocking performance detection device based on multi-working condition simulation of claim 1, wherein the door lock clamping and positioning unit comprises a base platform, a quick-change jig module arranged on the base platform and a pneumatic clamping mechanism arranged on the quick-change jig module and used for clamping a door lock shell; The quick-change jig module comprises a jig bottom plate fixed on the base platform, a profiling back plate, a plurality of positioning pins and profiling supporting blocks, wherein the profiling back plate is arranged on the jig bottom plate and is obliquely arranged upwards, the positioning pins are arranged on the jig bottom plate, the profiling supporting blocks are used for supporting the bottom profile of the door lock, an inclined included angle between the profiling back plate and the jig bottom plate is set to be 135 degrees so as to simulate the installation posture of the door lock in a real vehicle environment, and a groove for enabling a lock tongue state simulation unit to move and avoid is formed in the rear side of the profiling back plate.
3. The automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized in that the pneumatic clamping mechanism comprises a side limiting assembly arranged on the side edge of a jig base plate and a press-fit assembly arranged on one side of the jig base plate and used for limiting the upper portion of an automobile door lock, the side limiting assembly comprises a side mounting seat, a side driving cylinder arranged on the side mounting seat, a side mounting plate driven by the side driving cylinder and a side limiting pin arranged on the side mounting plate through a fixing piece, the side limiting pin is used for pushing the side face of a door lock to the reference inner wall of the profiling supporting block, and the press-fit assembly comprises a press-fit base, a press-fit cylinder arranged on the press-fit base, a pressing plate driven by the press-fit cylinder to rotate and vertically press down and a rubber cushion block arranged at the bottom of the pressing plate.
4. The automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized in that the lock tongue state simulation unit comprises an execution sliding rail, an execution driving plate, a first driving cylinder, a second cylinder mounting plate, second cylinders, a connecting plate, a guide module, a compression spring, a lock tongue simulation rod assembly and a push rod assembly driving cylinder, wherein the execution driving plate is slidably mounted on the execution sliding rail through a sliding block, the first driving cylinder is used for driving the execution driving plate to move, the second cylinder mounting plate is arranged on the execution driving plate, the second cylinders are respectively arranged on the left side and the right side of the front end surface of the second cylinder mounting plate, the connecting plate is connected with the driving end of the second cylinder, the guide module and the compression spring are arranged between the second cylinder mounting plate and the connecting plate, and the lock tongue simulation rod assembly is arranged on the front end surface of the connecting plate and the push rod assembly driving cylinder is used for driving the lock tongue simulation rod assembly to move in a vertical direction; The guide module comprises a guide post and a guide sleeve, the guide sleeve is embedded in the second cylinder mounting plate, one end of the guide post is fixed to the connecting plate, the other end of the guide post is in sliding fit with the guide sleeve, and the compression spring is used for releasing elastic energy when the second cylinder leaks and simulating impact load when the lock catch is closed.
5. The device for detecting unlocking performance of an automobile door lock based on multi-working condition simulation of claim 4, wherein the lock tongue simulation rod assembly comprises a lock catch fixing plate fixed on the front end face of the connecting plate, a lock catch sliding rail arranged on the lock catch fixing plate, a lock tongue simulation rod mounting frame sliding up and down along the lock catch sliding rail, and a lock tongue simulation rod mounted at the front end of the lock tongue simulation rod mounting frame; The push rod assembly drives the cylinder to drive the bolt simulation rod to cut into or withdraw from a working path of the door lock catch in the vertical direction through the bolt simulation rod mounting frame.
6. The automobile door lock unlocking performance detection device based on multi-working condition simulation of claim 1, wherein the unlocking driving unit comprises an unlocking bracket arranged on the equipment rack working platform, a Z-axis servo driving module arranged on the unlocking bracket, an unlocking driving plate driven by the Z-axis servo driving module to move up and down, a inhaul cable primary positioning assembly arranged below the Z-axis servo driving module and arranged on the unlocking bracket, and an inhaul cable unlocking assembly arranged on the unlocking driving plate; The cable preliminary positioning subassembly is in including setting up preliminary location axial slide rail on the unblock support, be in through slider slidable mounting preliminary locating plate on the preliminary location axial slide rail, set up cable knot and the inductor on the preliminary locating plate, set up the locating hole that is used for altitude mixture control on the preliminary locating plate, be configured to carry out initial tensioning and position calibration to the door lock cable.
7. The automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized in that the cable unlocking assembly comprises an axial unlocking electric cylinder installed on the unlocking driving plate, a linear sliding rail arranged beside the axial unlocking electric cylinder, a moving plate installed on the linear sliding rail through a sliding block and an unlocking rocker arm rotatably installed on the unlocking driving plate through a shaft rod, the driving end of the axial unlocking electric cylinder is connected with one end of the moving plate, one end of the unlocking rocker arm is provided with a waist-shaped hole, a lug on the moving plate is embedded in the waist-shaped hole to form a connecting rod transmission mechanism, the linear motion of the axial unlocking electric cylinder is converted into swinging motion of the unlocking rocker arm, a first cable fixing piece is installed at the bottom of the moving plate, a second cable fixing piece is installed at the tail end of the unlocking rocker arm to respectively drive an inner unlocking cable and an outer unlocking cable, the bottom of the moving plate is also provided with a limiting plate, two groups of cable jacket limiting holes corresponding to the two groups of cable jackets are formed in the limiting plate, and a pressure sensor and a cable encoder are integrated inside the axial unlocking electric cylinder.
8. The automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized in that the telecommunication connection unit comprises a top electric signal plugging component and a side electric signal plugging component, the top electric signal plugging component comprises a plugging base plate, a top electric signal driving cylinder, a connecting plate driven by the top electric signal driving cylinder, a plug block and a plugging seat, the plug block and the plugging seat are installed on the bottom end of the connecting plate, the plugging seat adopts a floating installation structure, guide blocks with guide angles are fixed on the periphery of the plugging seat, the side electric signal plugging component comprises a shaft column arranged on the working platform, a limit sleeve sleeved on the shaft column and a side plugging seat driven by an X-axis driving cylinder, the code scanning unit comprises a code scanning connecting rod installed on the shaft column, a code scanning gun fixedly installed on the code scanning connecting rod and sensors respectively arranged on two sides of the code scanning gun, and the sensors are used for aligning lock positions of an automobile door lock to identify full lock, half lock and unlocking states.
9. The detection method of the automobile door lock unlocking performance detection device based on multi-working condition simulation is characterized by comprising the following steps of: The first step is that the clamping and positioning unit is used for carrying out gesture reduction and rigid compaction on the automobile door lock, the code scanning unit is used for identifying the serial number of the product, and the telecom connection unit is controlled to complete the plug-in connection of an electric loop; the second step is that the lock tongue state simulation unit embeds the lock tongue simulation rod into a lock catch of the door lock, the second cylinder is deflated to match with the elasticity of the compression spring to push the lock catch into the full lock position, and the reverse pulling action of the first driving cylinder and the feedback of the sensor of the code scanning unit are used for verifying whether the physical state of the full lock is established; the third step, detecting the manual unlocking performance of the full lock, wherein in the full lock state, the lock tongue simulation rod exits for avoiding, the axial unlocking electric cylinder drives the inhaul cable to execute unlocking action, and the central control and data processing unit collects peak pulling force of the pressure sensor and stroke data of the electric cylinder encoder and combines an electric signal in the door lock to judge the manual unlocking performance of the full lock; the third step is half-lock state simulation and static verification, wherein the lock tongue state simulation unit drives the lock tongue simulation rod to run to a preset half-lock stroke point, and the half-lock physical state is verified through reverse drawing action and feedback of an inductor; In the half-lock state, the axial unlocking electric cylinder drives the inhaul cable to execute unlocking, and the system synchronously acquires the maximum transient tension value, the effective stroke and the half-lock switch signal state in the unlocking process to judge the half-lock manual unlocking performance; after the half-lock state is established, the telecommunication connection unit sends a self-priming triggering instruction to the door lock, monitors the response time of a switch signal inside the door lock from the half-lock state to the full-lock state, and judges the effectiveness of the self-priming function; in a full-lock state, the system sends an electric unlocking pulse, and simultaneously the lock tongue simulation rod cooperates with the first driving cylinder to try to execute a pull-back action, and the electric unlocking performance is judged according to pull-back resistance and internal signal feedback; DISENGAGE, detecting the pawl function, wherein when the door lock executes self-priming action to a preset middle travel point, the system executes power-off operation of the whole vehicle through the telecommunication connection unit, then immediately pulls a manual unlocking inhaul cable through the axial unlocking electric cylinder, and if the power-off operation is finished and reliable unlocking can still be realized under the working condition of self-priming interruption, judging that DISENGAGE pawl function is qualified; In the half-lock state, the lock tongue simulation rod applies an axial impact force with preset frequency and amplitude to the lock catch to simulate vehicle vibration, and whether the lock catch is jumped and disconnected is judged by monitoring a sensor signal; Tenth, data archiving and system resetting, wherein each actuating unit returns to the physical origin, the pneumatic clamping mechanism is released, the system binds and stores the acquired tension curve, stroke, time and judgment result with the serial number, and a detection report is generated.
10. The method of claim 9, wherein in the first step, the central control and data processing unit further automatically identifies the type of the door lock according to the proximity sensor signal on the door lock clamping and positioning unit, and invokes a corresponding detection parameter template from a database, wherein the parameter template comprises an unlocking tension upper limit threshold and a unlocking tension lower limit threshold, a travel threshold, a self-priming action time constant and an electrolytic lock pulse width.

Description

Automobile door lock unlocking performance detection device and detection method based on multi-working condition simulation Technical Field The invention relates to the technical field of automobile part detection, in particular to an automobile door lock unlocking performance detection device and method based on multi-working condition simulation. Background The automobile door lock is one of the core components of an automobile body control system, the working reliability of the automobile door lock is directly related to the running safety of the automobile, the personal safety of passengers and the property safety of the automobile, and the automobile door lock is a key device for guaranteeing the normal locking and unlocking functions of the automobile door. Along with the rapid development of the automobile industry in the intelligent and safety directions, the market puts forward higher requirements on the functional stability, the operation reliability and the safety redundancy of the automobile door lock, and correspondingly, the detection of key functions of the automobile door lock also becomes a core link in the production and manufacturing, quality control and performance verification processes, so that the product qualification rate of the automobile door lock and the use safety after loading are directly determined. In various function detection of an automobile door lock, unlocking performance related to a locking state, electric unlocking performance, self-priming performance in a half-locking state, power-off emergency unlocking performance and detection (a pawl is a core mechanical structure for realizing locking and unlocking switching in the automobile door lock) unlocking performance in a half-locking rebound state are key detection items for guaranteeing normal work and safety redundancy of the automobile door lock, and are important points and difficulties in detection in the prior art. The full locking state and the half locking state are two core working states of the automobile door lock, and the unlocking performance of the full locking state and the half locking state directly determines the basic functional reliability of the automobile door lock. The full-locking state is a normal working state of the door lock in the running process of the vehicle, the locking can be reliably kept under the action of limited external force, meanwhile, the door lock can be smoothly unlocked when an unlocking instruction is received, the situation that passengers cannot get on or get off the vehicle or escape in an emergency mode is avoided, the passengers cannot get on or get off the vehicle or escape in an emergency mode is prevented, the unlocking performance of the door lock is detected in a half-locking state as a transition state of the full-locking state, whether the half-locking state can be normally unlocked under the action of limited force is detected, potential safety hazards caused by unexpected unlocking in the half-locking state are avoided, and inconvenience in operation caused by abnormal unlocking force is prevented. The electric unlocking function is a core electric control function of the modern automobile door lock, and the detection of the electric unlocking function mainly aims at unlocking reliability in an electric driving mode, and comprises the following steps that under rated voltage and normal working conditions, after an electric unlocking instruction is sent, the automobile door lock can quickly and accurately complete unlocking action, no clamping stagnation and no abnormal noise exist in the unlocking process, after unlocking, a lock tongue can completely return, the effectiveness and stability of electric control are ensured, and the use requirement of intelligent operation of an automobile is met. The self-priming function in the half-locking state is an auxiliary locking function of part of high-end automobile door locks, and the self-priming mechanism of the door locks automatically completes the switching from half locking to full locking after the door locks enter the half-locking state, so that the door locks are locked in place, and safety problems such as loosening and unexpected unlocking of the door locks caused by the fact that the half-locking state is not switched to the full locking state are avoided. Therefore, the self-priming test in the half-locking state is an important detection item of the automobile door lock, the reliability and smoothness of the self-priming action are required to be verified, the self-priming function can be accurately triggered in the half-locking state, and the self-priming process is free from clamping stagnation and failure. The manual unlocking test after power failure in the half-locking state is a key detection item for guaranteeing the safety redundancy of the automobile door lock. The emergency power-off situation possibly occurs in the running process of the automobile, at the moment, the electric control fun