Automobile self-suction side door lock function detection equipment

By designing a reaction force locking mechanism and a reaction force mechanism for automotive self-priming side door locks, the problem of existing equipment being unable to detect self-priming side door locks under extreme force conditions has been solved. Functional testing under a 400N reaction force has been achieved, ensuring the stability of the product and the reliability of the motor drive under extreme force conditions.

CN121364064APending Publication Date: 2026-01-20WUXI CHANGRUN INTELLIGENT SYSTEM TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511729676.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-01-20

AI Technical Summary

Technical Problem

Existing testing equipment cannot perform functional testing of self-priming side door locks in automobiles under extreme stress conditions, resulting in unstable production quality.

Method used

A device for testing the function of a self-priming side door lock of an automobile was designed. It adopts a reaction force locking mechanism and a reaction force mechanism to test the product function under a reaction force of 400N, simulating extreme stress conditions. The engagement state of the lock body and the latch is detected by applying a lateral load, and the stability of the motor drive is detected by PLC control.

Benefits of technology

It effectively prevents the self-priming side door lock from accidentally falling off or unlocking under extreme force, ensuring the product's functional stability and motor drive reliability under reaction force conditions, and enabling reliable testing of product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to automobile self-suction side door lock function detection equipment which comprises a frame, and a counter-force lock entering mechanism is installed on the frame. The counter-force lock-in mechanism comprises a lock-in mechanism and a counter-force mechanism, the lock-in mechanism comprises a lock-in frame, the lock-in frame comprises a lock-in left side plate and a lock-in right side plate which are symmetrically arranged, a lock-in bottom plate is connected between the bottom of the lock-in left side plate and the bottom of the lock-in right side plate, and a half-lock air cylinder is installed on the lock-in right side plate; the piston end of the semi-locking air cylinder faces the self-suction side door lock and is provided with an air cylinder plate, the air cylinder plate is provided with a full-locking air cylinder, and the piston end of the full-locking air cylinder faces the self-suction side door lock and is provided with an upper push plate. According to the invention, whether all functions of the product are normal or not is detected under a 400N counter-force condition. The counter-force detection can simulate the function operation condition of the product under the extreme stress condition, and accidental falling or unlocking is prevented.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile self-suction side door lock function detection, and relates to an automobile self-suction side door lock function detection device. BACKGROUND

[0002] Door locks with self-suction function are widely used in the field of automobiles. The stability of various use conditions needs to be detected during the manufacturing process of such door locks. The existing detection equipment cannot control and detect the force in the door lock test, resulting in unstable quality of the produced door locks. SUMMARY

[0003] The purpose of the present application is to provide an automobile self-suction side door lock function detection device. The detection device detects whether all functions of the product are normal under the condition of 400N counterforce. Counterforce detection can simulate the function operation status of the product under extreme force conditions to prevent accidental falling or unlocking.

[0004] According to the technical scheme provided by the present application: an automobile self-suction side door lock function detection device, comprising a frame, a counterforce locking mechanism is installed on the frame; the counterforce locking mechanism comprises a locking mechanism and a counterforce mechanism, the locking mechanism comprises a locking frame, the locking frame comprises a locking left side plate and a locking right side plate which are symmetrically arranged, a locking bottom plate is connected between the bottom of the locking left side plate and the locking right side plate, a half-locking cylinder is installed on the locking right side plate, the piston end of the half-locking cylinder faces the self-suction side door lock and is installed with a cylinder plate, a full-locking cylinder is installed on the cylinder plate, the piston end of the full-locking cylinder faces the self-suction side door lock and is installed with an upper pushing plate, a locking rod is installed on the other side of the upper pushing plate, a locking pressure sensor is installed between the upper pushing plate and the locking rod, and a locking pin is installed at the front end of the locking rod.

[0005] As a further improvement of the present application, a guide rod set is installed in the locking frame, the guide rod set comprises an upper guide rod and a lower guide rod, the upper guide rod is symmetrically installed between the upper parts of the locking left side plate and the locking right side plate, the lower guide rod is symmetrically installed between the lower parts of the locking left side plate and the locking right side plate, and linear bearing seats are installed on the cylinder plate and the upper pushing plate.

[0006] As a further improvement of the present application, the counterforce mechanism comprises a half-locking counterforce spring and a full-locking counterforce spring, the half-locking counterforce spring is sleeved on the upper guide rod and on both sides of the locking pressure sensor; the two sides of the half-locking counterforce spring are the locking left side plate and the upper pushing plate; a lower pushing plate is arranged on the side surface of the upper pushing plate, the lower pushing plate slides along the lower guide rod, the full-locking counterforce spring is sleeved on the lower guide rod, and the two sides of the full-locking counterforce spring are the locking left side plate and the lower pushing plate; the lower part of the upper pushing plate is a pushing part, the pushing part is located in the same horizontal plane as the lower pushing plate, and the upper part of the upper pushing plate is located above the lower pushing plate.

[0007] As a further improvement of the present application, the upper pushing plate is closer to the cylinder plate relative to the lower pushing plate; the half-locking counterforce spring is longer than the full-locking counterforce spring.

[0008] As a further improvement of the present application, the half-lock counterforce spring is provided with an upper spring plate between the half-lock left side plate, and the full-lock counterforce spring is provided with a lower spring plate between the half-lock left side plate; the upper spring plate is provided with an upper adjusting screw hole and an upper guide rod through hole, the upper guide rod through hole is matched with the upper guide rod, the half-lock left side plate is provided with a through hole, the adjusting screw is screwed into the upper adjusting screw hole after passing through the half-lock left side plate, and the lower spring plate is provided with a lower adjusting screw hole and a lower guide rod through hole, the lower guide rod through hole is matched with the lower guide rod, and the adjusting screw is screwed into the lower adjusting screw hole after passing through the half-lock left side plate.

[0009] As a further improvement of the present application, the half-lock cylinder and the full-lock cylinder are linear moving cylinders.

[0010] As a further improvement of the present application, the frame is provided with a half-lock mechanism jacking cylinder, and the half-lock mechanism jacking cylinder piston end is vertically upward and connected with the half-lock bottom plate.

[0011] The positive progress effect of the present application is that: 1. The present application detects whether all functions of the product are normal under the condition of 400N counterforce. The counterforce detection can simulate the function running status of the product under the condition of extreme stress, so as to prevent accidental falling or unlocking.

[0012] 2. The present application detects whether the product lock body function is qualified by applying a transverse load and observing the engagement state of the lock body and the lock catch. Since the product is an electric control door lock, the equipment can detect the stability of the motor drive of the product under the condition of counterforce, so as to prevent the self-suction failure or abnormal rebound caused by insufficient motor tension or loose line of the product. The equipment detects each function under the condition of counterforce to judge whether the product is qualified. The PLC is used to control the detection of whether the applied counterforce and the ice breaking force of the product meet the requirements, and whether the product signal appears problems. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structural schematic diagram of the present application.

[0014] Figure 2 The figure is a structural schematic diagram of the counterforce half-lock mechanism of the present application.

[0015] Figure 3 The figure is a structural schematic diagram of the upper push plate of the present application. DETAILED DESCRIPTION

[0016] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0017] In order to make the technical personnel better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without creative work should belong to the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, "including" and "having" and the like similar terms mean that in addition to those listed in "including" and "having", other non-listed contents can also be "including" and "having"; for example, a process, method, system, product or device that can include a series of steps or units does not have to be limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] Due to the angle of the drawing, some parts may not be drawn, but their positions and connection relationships can be understood according to the textual expression part.

[0020] As shown in Figure 1 The present application is a kind of automobile self-suction side door lock function detection equipment, including frame 14, frame 14 installs door lock positioning mechanism, door lock electrical measurement mechanism, door lock unlocking mechanism, counterforce locking mechanism, ice breaking locking mechanism.

[0021] The door lock positioning mechanism includes a base plate 15 and a compression cylinder 5, the base plate 15 is provided with a positioning hole, and a positioning block surrounds a positioning cavity, the bottom of the self-suction side door lock 2 is located in the positioning cavity, and the compression cylinder 5 is located on both sides of the positioning cavity, and the compression cylinder 5 is fixed by pressing the self-suction side door lock 2 from both sides.

[0022] The door lock electrical measurement mechanism includes a connector down pressure cylinder 1 and an electric control box 7, the connector down pressure cylinder 1 is installed on the base plate 15 through a support, the piston end of the connector down pressure cylinder 1 faces the self-suction side door lock 2 and is provided with a pin 16, the self-suction side door lock 2 is provided with a matched jack, and the pin 16 is connected with the electric control box.

[0023] The door lock unlocking mechanism includes an inner opening unlocking execution cylinder 8 and an inner opening unlocking moving cylinder 9, the inner opening unlocking moving cylinder 9 is installed on the base plate 15, the piston end of the inner opening unlocking moving cylinder 9 is connected with the inner opening unlocking execution cylinder 8 through a transition plate, the piston end of the inner opening unlocking execution cylinder 8 faces the self-suction side door lock 2 and is provided with an unlocking pin 17.

[0024] In this embodiment, the inner-opening unlocking moving cylinder 9 is a linear moving cylinder, and the inner-opening unlocking actuating cylinder 8 is a rotating cylinder. The unlocking mechanism of the self-closing side door lock 2 adopts an arc-shaped contact operation. The unlocking pin 17 rotates with the piston end of the inner-opening unlocking actuating cylinder 8.

[0025] In other embodiments, when the unlocking mechanism of the self-priming side door lock 2 adopts a linear contact operation, the inner opening unlocking execution cylinder 8 can be a corresponding linear motion cylinder.

[0026] like Figure 2 As shown, the reaction force locking mechanism includes a locking mechanism and a reaction force mechanism. The locking mechanism includes a locking frame, which includes a symmetrically arranged locking left side plate 19-1 and locking right side plate 19-2. A locking base plate 19-3 is connected between the bottoms of the locking left side plate 19-1 and the locking right side plate 19-2. A semi-locking cylinder 12 is installed on the locking right side plate 19-2. The piston end of the semi-locking cylinder 12 faces the self-priming side door lock 2 and is mounted on a cylinder plate 18. A full-locking cylinder 11 is installed on the cylinder plate 18. The piston end of the full-locking cylinder 11 faces the self-priming side door lock 2 and is mounted on an upper push plate 20. A locking rod 21 is installed on the other side of the upper push plate 20. A locking pressure sensor 10 is installed between the upper push plate 20 and the locking rod 21. A locking pin 22 is installed at the front end of the locking rod 21.

[0027] To ensure the smooth operation of the locking mechanism, a guide rod assembly is installed in the locking frame. The guide rod assembly consists of an upper guide rod 25 and a lower guide rod 26. The upper guide rod 25 is symmetrically installed between the upper parts of the left locking left plate 19-1 and the right locking right plate 19-2, and the lower guide rod 26 is symmetrically installed between the lower parts of the left locking left plate 19-1 and the right locking right plate 19-2. Adaptive linear bearing seats 27 are installed on the cylinder plate 18 and the upper push plate 20. The cylinder plate 18 and the upper push plate 20 move along the guide rod assembly through the linear bearing seats 27.

[0028] The reaction mechanism includes a semi-locking reaction spring 23 and a full-locking reaction spring 24. The semi-locking reaction spring 23 is sleeved on the upper guide rod 25, on both sides of the locking pressure sensor 10. The semi-locking reaction spring 23 is flanked by the left locking side plate 19-1 and the upper push plate 20. The upper push plate 20 has a lower push plate 28 on its side, which slides along the lower guide rod 26 via a linear bearing seat 27. The full-locking reaction spring 24 is sleeved on the lower guide rod 26, and is flanked by the left locking side plate 19-1 and the lower push plate 28. Figure 3 As shown, the lower part of the upper push plate 20 is the push part 20-1, which is located on the same horizontal plane as the lower push plate 28. The upper part of the upper push plate 20 is located above the lower push plate 28, and the upper push plate 20 is closer to the cylinder plate 18 than the lower push plate 28. The semi-locking reaction spring 23 is longer than the fully locking reaction spring 24. When the upper push plate 20 and the semi-locking reaction spring 23 begin to contact, the lower push plate 28 is not in contact with the fully locking reaction spring 24.

[0029] In order to adjust the positions of the half-lock counterforce spring 23 and the full-lock counterforce spring 24 to control the compression amount during work, an upper spring plate is arranged between the half-lock counterforce spring 23 and the left side plate 19-1 of the lock, and a lower spring plate 29 is arranged between the full-lock counterforce spring 24 and the left side plate 19-1 of the lock. The upper spring plate is provided with an upper adjusting screw hole and an upper guide rod through hole, the upper guide rod through hole is matched with the upper guide rod 25, the left side plate 19-1 of the lock is provided with a through hole, and an adjusting screw is screwed into the upper adjusting screw hole after penetrating through the left side plate 19-1 of the lock, and the horizontal movement of the position of the upper spring plate can be realized by rotating the adjusting screw; the lower spring plate 29 is provided with a lower adjusting screw hole and a lower guide rod through hole, the lower guide rod through hole is matched with the lower guide rod 26, and an adjusting screw is screwed into the lower adjusting screw hole after penetrating through the left side plate 19-1 of the lock, and the horizontal movement of the position of the lower spring plate 29 can be realized by rotating the adjusting screw.

[0030] In the embodiment, the half-lock cylinder 12 and the full-lock cylinder 11 are linear motion cylinders, and the unlocking mechanism of the self-suction side door lock 2 adopts linear contact operation.

[0031] In order to prevent the locking pin 22 from being stuck in the self-suction side door lock 2, the locking mechanism jacking cylinder 13 is installed in the frame 14, the piston end of the locking mechanism jacking cylinder 13 is vertically upward and connected with the locking bottom plate 19-3, and the locking mechanism can be driven to be separated from the self-suction side door lock 2 in the vertical direction.

[0032] The door lock unlocking mechanism and the counterforce locking mechanism are located on both sides of the door lock positioning mechanism. The ice-breaking locking mechanism includes the ice-breaking locking cylinder 4 installed on the frame 14, the piston end of the ice-breaking locking cylinder 4 faces the self-suction side door lock 2 and is provided with an ice-breaking pin, the ice-breaking pressure sensor 3 is arranged between the ice-breaking pin and the piston end of the ice-breaking locking cylinder 4, and in order to prevent the ice-breaking pin from being stuck in the self-suction side door lock 2, the ice-breaking mechanism jacking cylinder 6 is installed in the frame 14, the piston end of the ice-breaking mechanism jacking cylinder 6 is vertically upward and connected with the ice-breaking base plate 30, and the ice-breaking locking cylinder 4 is installed on the ice-breaking base plate 30. The ice-breaking mechanism jacking cylinder 6 can drive the ice-breaking locking mechanism to be separated from the self-suction side door lock 2 in the vertical direction.

[0033] The ice-breaking pressure sensor 3 and the locking pressure sensor 10 are connected with the electric control box 7.

[0034] The working process of the application is as follows: After the device is started, the self-suction side door lock 2 is put into the positioning cavity, the compression cylinder 5 is pressed in, and the self-suction side door lock 2 is fixed firmly; the connector lower pressing cylinder 1 is pressed down, the motor of the self-suction side door lock 2 is powered on, and the signal state is connected to the touch screen in the electric control box 7. The full lock cylinder 11 is not aerated, the half lock cylinder 12 is extended to drive the locking pin 22 to extend into the self-suction side door lock 2, the upper pushing plate 20 pushes the half lock counterforce spring 23 to contact the upper spring plate, the half lock counterforce spring 23 gives the locking mechanism 100N of the reverse thrust, pushes the self-suction side door lock 2 into the half lock state, and the half lock cylinder 12 is not aerated after the self-suction side door lock 2 is in the half lock state. The self-suction side door lock 2 is driven by the internal motor to enter the full lock state, the full lock cylinder 11 is driven forward by the self-suction side door lock 2, the upper pushing plate 20 continues to move forward, the lower pushing plate 28 is pushed by the lower pushing part 20-1 at the lower part of the upper pushing plate 20, the two ends of the full lock counterforce spring 24 abut against the locking left side plate 19-1 and the lower pushing plate 28, the half lock counterforce spring 23 and the full lock counterforce spring 24 give the locking mechanism a reverse thrust of 400N, the locking pin 22 transmits the reverse thrust to the self-suction side door lock 2, and the locking pressure sensor 10 presents the reverse thrust on the touch screen of the electric control box 7; the internal opening unlocking moving cylinder 9 is extended to drive the internal opening unlocking execution cylinder 8 to a specified position, the unlocking pin 17 is extended into the self-suction side door lock 2, the internal opening unlocking execution cylinder 8 is rotated to reset, the self-suction side door lock 2 performs a mechanical unlocking function, and the half lock cylinder 12, the full lock cylinder 11 and the internal opening unlocking moving cylinder 9 are retracted; this is to detect the half lock self-suction function and the internal opening mechanical unlocking function of the self-suction side door lock 2 under the reverse force state. The full lock cylinder 11 is extended, the half lock cylinder 12 is further extended, the self-suction side door lock 2 is directly pushed into the full lock state, the self-suction side door lock 2 is electrically unlocked after being electrically unlocked, and the full lock cylinder 11 and the half lock cylinder 12 are retracted; this is to detect the snowshoe plate function of the self-suction side door lock 2, that is, the unlocking state maintaining function and the electric control unlocking function after unlocking. The icebreaking locking cylinder 4 remains in the extended state, the icebreaking mechanism jacking cylinder 6 is raised, then the icebreaking locking cylinder 4 is retracted, the icebreaking pin enters the self-suction side door lock 2 to directly push it to the full lock state, the self-suction side door lock 2 is electrically unlocked, the self-suction side door lock 2 ratchet gives the icebreaking pin a force, the force is presented on the touch screen of the electric control box 7 by the icebreaking pressure sensor 3, and this is the icebreaking force, for example, a force given by a car door lock to a car door to open outward after the car door is frozen. The icebreaking locking cylinder 4 is extended, the icebreaking mechanism jacking cylinder 6 is retracted, and this is to detect the icebreaking function of the self-suction side door lock 2. The self-suction side door lock 2 is electrically controlled to lock and unlock, and the signal state is judged by the PLC. This is to detect the locking function of the self-suction side door lock 2. After all the detection is completed, the green light is on, indicating that it is qualified, and the red light is on, indicating that it is not good.

[0035] It is understood that the above embodiments are only exemplary for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and these modifications and improvements are also considered as the protection scope of the present application.

Claims

1. A device for testing the function of a self-priming side door lock of an automobile, comprising a frame (14), characterized in that, A reaction force locking mechanism is installed on the frame (14); the reaction force locking mechanism includes a locking mechanism and a reaction force mechanism. The locking mechanism includes a locking frame, which includes a symmetrically arranged locking left side plate (19-1) and locking right side plate (19-2). A locking bottom plate (19-3) is connected between the bottoms of the locking left side plate (19-1) and the locking right side plate (19-2). A semi-locking cylinder (12) is installed on the locking right side plate (19-2). 12) The piston end faces the self-priming side door lock (2) and the cylinder plate (18) is installed. The full lock cylinder (11) is installed on the cylinder plate (18). The piston end of the full lock cylinder (11) faces the self-priming side door lock (2) and the upper push plate (20) is installed. The locking rod (21) is installed on the other side of the upper push plate (20). The locking pressure sensor (10) is installed between the upper push plate (20) and the locking rod (21). The locking pin (22) is installed at the front end of the locking rod (21).

2. The automotive self-priming side door lock function testing device as described in claim 1, characterized in that, A guide rod assembly is installed in the locking frame. The guide rod assembly consists of an upper guide rod (25) and a lower guide rod (26). The upper guide rod (25) is symmetrically installed between the upper parts of the left side plate (19-1) and the right side plate (19-2) of the locking frame. The lower guide rod (26) is symmetrically installed between the lower parts of the left side plate (19-1) and the right side plate (19-2) of the locking frame. A suitable linear bearing seat (27) is installed on the cylinder plate (18) and the upper push plate (20).

3. The automotive self-priming side door lock function testing device as described in claim 2, characterized in that, The reaction mechanism includes a semi-locking reaction spring (23) and a full-locking reaction spring (24). The semi-locking reaction spring (23) is sleeved on the upper guide rod (25) and on both sides of the locking pressure sensor (10). The sides of the semi-locking reaction spring (23) are the left locking plate (19-1) and the upper push plate (20). The upper push plate (20) has a lower push plate (28) on its side. The lower push plate (28) slides along the lower guide rod (26). The full-locking reaction spring (24) is sleeved on the lower guide rod (26). The sides of the full-locking reaction spring (24) are the left locking plate (19-1) and the lower push plate (28). The lower part of the upper push plate (20) is the push part (20-1). The push part (20-1) and the lower push plate (28) are located on the same horizontal plane. The upper part of the upper push plate (20) is located above the lower push plate (28).

4. The automotive self-priming side door lock function testing device as described in claim 3, characterized in that, The upper push plate (20) is closer to the cylinder plate (18) than the lower push plate (28); the semi-locking reaction spring (23) is longer than the fully-locking reaction spring (24).

5. The automotive self-priming side door lock function testing device as described in claim 3, characterized in that, An upper spring plate is provided between the semi-locking reaction spring (23) and the left locking plate (19-1), and a lower spring plate (29) is provided between the full-locking reaction spring (24) and the left locking plate (19-1). The upper spring plate is provided with an upper adjusting screw hole and an upper guide rod through hole. The upper guide rod through hole cooperates with the upper guide rod (25). The left locking plate (19-1) is provided with a through hole. The adjusting bolt passes through the left locking plate (19-1) and is screwed into the upper adjusting screw hole. The lower spring plate (29) is provided with a lower adjusting screw hole and a lower guide rod through hole. The lower guide rod through hole cooperates with the lower guide rod (26). The adjusting bolt passes through the left locking plate (19-1) and is screwed into the lower adjusting screw hole.

6. The automotive self-priming side door lock function testing device as described in claim 1, characterized in that, The semi-lock cylinder (12) and the fully lock cylinder (11) are linear motion cylinders.

7. The automotive self-priming side door lock function testing device as described in claim 1, characterized in that, The locking mechanism lifting cylinder (13) is installed in the frame (14). The piston end of the locking mechanism lifting cylinder (13) is vertically upward and connected to the locking base plate (19-3).

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