An organization that simulates the impact durability test of a car hood lock.

Abstract

This utility model discloses a mechanism for simulating the impact durability test of a car hood lock. A sliding rail has a roller push rod that slides up and down. The roller push rod presses down on one end of a swing arm, causing the swing arm to swing up and down via a swing arm rotation axis. A lock block mounting block is located at the other end of the swing arm. The slide rail has a limiting rod for the swing arm. The bottom of the slide rail has a mounting plate and a limiter for mounting the hood lock. A sealing reaction force adjusting spring is located at the hood lock. An energy sensor is located below the mounting plate. The side of the slide rail has an actuator mounting plate for mounting the hood lock actuator. The slide rail includes speed sensor I, speed sensor II, position sensor I, position sensor II, position sensor III, and a pneumatic push rod. This utility model allows for convenient adjustment of the simulated hood lock sealing reaction force, simulated hood weight, closing speed, and closing energy, meeting the requirements of different hood lock models for sealing reaction force, closing speed, and closing energy during testing.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing, and in particular to a mechanism for simulating the impact durability test of a car hood lock. Background Technology

[0002] The hood lock is a crucial component of a car, directly affecting the opening and closing of the hood. After production, the hood lock undergoes durability testing. Since it's mounted on the front crossbeam in actual use, the reaction force of the sealing strip on the hood lock is approximately 100N when the hood is partially locked, and approximately 300N when fully locked. Furthermore, the weight of the hood varies depending on the car model.

[0003] If durability testing is to be conducted on the hood lock, a testing mechanism needs to be developed that can simulate the stress on the hood lock in both the partially locked and fully locked states after the hood is locked.

[0004] In automotive hood lock testing, durability tests are conducted on the hood lock under different sealing reaction forces. Different hood locks have different sealing reaction force requirements, necessitating timely adjustments to the sealing reaction force during testing. Furthermore, different car models have different hood lock weights, requiring the pre-setting of counterweights to meet experimental requirements. Currently, there is a lack of testing institutions that meet these requirements. Summary of the Invention

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a mechanism for simulating the impact durability test of a car hood lock. It can conveniently adjust the sealing reaction force of the simulated hood lock, the weight of the simulated hood, the closing speed and the closing energy, and can meet the requirements of different models of hood locks for sealing reaction force, closing speed and closing energy during the test.

[0006] Technical Solution: This utility model discloses a mechanism for simulating the impact durability test of a car hood lock. Its features include: a slide rail with a sliding roller push rod; the roller push rod presses down on one end of a swing arm, causing the swing arm to swing up and down via a swing arm rotation axis; the other end of the swing arm has a lock block mounting block for placing a counterweight to simulate the weight of a car hood; the slide rail has a limiting rod for the swing arm; the bottom of the slide rail has a mounting plate and a limiter for mounting the hood lock; a sealing reaction force adjusting spring is provided at the hood lock; an energy sensor is located below the mounting plate; the side of the slide rail has an actuator mounting plate for mounting the hood lock actuator; the slide rail is equipped with speed sensor I, speed sensor II, position sensor I, position sensor II, position sensor III, and a pneumatic push rod.

[0007] The speed sensor I and speed sensor II are arranged vertically.

[0008] The swing arm swings up and down via a swing arm rotation axis to simulate the opening and closing of a car hood.

[0009] The position sensor II and the pneumatic push rod are mounted on the slide rail, and the lifting height of the swing arm is controlled by adjusting the mounting height.

[0010] The limiter restricts the lowest downward position of the swing arm.

[0011] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: This invention allows for convenient adjustment of the simulated front hood lock sealing reaction force, simulated hood weight, closing speed, and closing energy, meeting the requirements of different hood lock models for sealing reaction force, closing speed, and closing energy during testing. This invention utilizes a spring that is easily adjustable up and down to calibrate the sealing reaction force, allowing for quick adjustment when different sealing reaction forces are needed. This significantly saves personnel time spent adjusting tooling during testing. Simultaneously, a lock mounting plate that facilitates the installation of counterweights simulates the weight of a real vehicle hood. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0014] In the diagram, 1 is the lock block mounting block; 2 is the swing arm; 3 is the swing arm rotation shaft; 4 is the roller push rod; 5 is the mounting plate; 6 is the sealing reaction force adjusting spring; 7 is the limit switch; 8 is the energy sensor; 9 is the actuator mounting plate; 10 is speed sensor I; 11 is speed sensor II; 12 is position sensor I; 13 is the slide rail; 14 is position sensor II; 15 is position sensor III; 16 is the limit rod; and 17 is the pneumatic push rod. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] This utility model discloses a mechanism for simulating the impact durability test of a car hood lock. It includes a slide rail 13 with a sliding roller push rod 4. The roller push rod 4 presses down on one end of a swing arm 2, causing the swing arm 2 to swing up and down via a swing arm rotation shaft 3. The other end of the swing arm 2 has a lock block mounting block 1 for placing a counterweight to simulate the weight of a car hood. The slide rail 13 has a limiting rod 16 for the swing arm 2. The bottom of the slide rail 13 has a mounting plate 5 and a limiter 7 for mounting the hood lock. A sealing reaction force adjusting spring 6 is located at the hood lock. An energy sensor 8 is located below the mounting plate 5. The side of the slide rail 13 has an actuator mounting plate 9 for mounting the hood lock actuator. The slide rail 13 also includes a speed sensor I 10, a speed sensor II 11, a position sensor I 12, a position sensor II 14, a position sensor III 15, and a pneumatic push rod 17. The speed sensors I 10 and II 11 are vertically aligned. The swing arm 2 swings up and down via the swing arm rotation shaft 3 to simulate the opening and closing of a car hood. Position sensor II 14 and pneumatic push rod 17 are mounted on slide rail 13, and the lifting height of the swing arm 2 is controlled by adjusting the mounting height. Limiter 7 restricts the lowest downward position of the swing arm 2.

[0017] like Figure 1 As shown, the lock block mounting block 1 is installed at the tail of the swing arm 2, and a counterweight can be added to the top to simulate the weight of the hood of a real car. The swing arm 2 swings up and down through the swing arm rotation shaft 3 to simulate the opening and closing of the car hood. The roller push rod 4 is installed on the slide rail 13 and can be adjusted up and down. After fixed installation, the roller push rod 4 presses down on the swing arm 2 to lift the swing arm. At the same time, the lifting height of the swing arm 2 can be controlled by adjusting the installation height of the roller push rod 4. The lock body is installed on the mounting plate 5. The sealing reaction force adjusting spring 6 can be adjusted up and down to complete the calibration of the sealing reaction force of the front hood lock. The limiter 7 can limit the lowest downward position of the swing arm 2 to control the stroke of the latch in the front hood lock. The energy sensor 8 records the single impact energy when the swing arm falls. The front hood lock actuator is installed on the actuator mounting plate 9. During the downward strike of the swing arm 2, the lock block mounting block 1 passes by speed sensors I10 and II11, and the speed value at that moment is recorded. The downward strike speed of the swing arm 2 can be calculated by measuring the distance between speed sensors I10 and II11. When the swing arm 2 strikes and the lock engages, position sensor I12 will be triggered and turned off, proceeding to the next step. After the front cover lock is unlocked, the front cover lock will push up the lock block mounting block 1, and simultaneously, position sensor I12 will be triggered and illuminated. At this time, the roller push rod 4 will press down on the swing arm 2, thereby lifting the swing arm. For example... Figure 2As shown, during the lifting process of the swing arm 2, it passes the position sensor II 14. The position sensor II 14 is triggered and extinguished. After receiving the trigger signal, the pneumatic push rod 17 will push out the limit rod 16, triggering the position sensor III 15. After receiving the trigger signal, the roller push rod 4 will lift up to relieve the force, and the swing arm 2 will fall on the limit rod 16. The position sensor II 14 and the pneumatic push rod 17 are mounted on the slide rail 13, and the lifting height of the swing arm can be controlled by adjusting the mounting height up and down.

[0018] In use, first install the product to be subjected to durability testing on mounting plate 5 and actuator mounting plate 9. Adjust the installation height of roller push rod 4, pneumatic push rod 17 and position sensor II 14 on slide rail 13. In the initial state, limit rod 16 is in the retracted state, roller push rod 4 is at the highest point, and swing arm 2 is in a free movement state. Start the running program, press the lock block mounting block 1 to the fully locked position, triggering the extinguishing of position sensor I 12. At the same time, the controller receives the fully locked signal and the actuator performs the unlocking action. Lock block mounting block 1 is lifted by the lock block, triggering the illumination of position sensor I 12. After receiving the signal, roller push rod 4 will press down on swing arm 2, thereby lifting the swing arm. During the lifting process, swing arm 2 passes through position sensor II 14, which is triggered and extinguished. After receiving the trigger signal, pneumatic push rod 17 will push out limit rod 16, triggering position sensor III 15. After receiving the trigger signal, roller push rod 4 will lift up to relieve the force, and swing arm 2 will fall on limit rod 16. After a set time, the pneumatic push rod 17 retracts the limit rod 16, the swing arm 2 falls freely, the latch engages, and the position sensor I 12 is simultaneously triggered to shut off. The latch mounting block 1 passes through speed sensor I 10 and speed sensor II 11, and the equipment records the speed value when it passes through.

[0019] This invention allows for convenient adjustment of the simulated hood lock sealing force, simulated hood weight, closing speed, and closing energy, meeting the requirements of different hood lock models for sealing force, closing speed, and closing energy during testing. The invention utilizes a spring that is easily adjustable up and down to calibrate the sealing force, allowing for quick adjustments when different sealing forces are needed. This significantly saves time for personnel adjusting the tooling during testing. Simultaneously, a lock mounting plate that facilitates the installation of counterweights simulates the weight of a real vehicle hood.

Claims

1. A mechanism for simulating the impact durability test of a car hood lock, characterized in that: The slide rail (13) includes a slide rail (13) with a roller push rod (4) that slides up and down. The roller push rod (4) presses down on one end of the swing arm (2), and the swing arm (2) swings up and down through the swing arm rotation shaft (3). The other end of the swing arm (2) is provided with a lock block mounting block (1) for placing a counterweight to simulate the weight of the car hood. The slide rail (13) is provided with a limit rod (16) for the swing arm (2). The bottom of the slide rail (13) is provided with a mounting plate (5) for installing the hood lock and a limiter (7). The hood lock is provided with a sealing reaction force adjusting spring (6). An energy sensor (8) is provided below the mounting plate (5). The side of the slide rail (13) is provided with an actuator mounting plate (9) for installing the hood lock actuator. The slide rail (13) is provided with a speed sensor I (10), a speed sensor II (11), a position sensor I (12), a position sensor II (14), a position sensor III (15), and a pneumatic push rod (17).

2. The mechanism for simulating the impact durability test of a car hood lock according to claim 1, characterized in that: The speed sensor I (10) and speed sensor II (11) are arranged vertically.

3. The mechanism for simulating the impact durability test of a car hood lock according to claim 1, characterized in that: The swing arm (2) swings up and down via the swing arm rotation shaft (3) to simulate the opening and closing of a car hood.

4. The mechanism for simulating the impact durability test of a car hood lock according to claim 1, characterized in that: The position sensor II (14) and pneumatic push rod (17) are mounted on the slide rail (13), and the lifting height of the swing arm (2) is controlled by adjusting the installation height.

5. The mechanism for simulating the impact durability test of a car hood lock according to claim 1, characterized in that: The limiter (7) restricts the lowest downward position of the swing arm (2).

Images