Automobile door hinge quality inspection device

Abstract

The invention relates to the technical field of hinge quality inspection, in particular to an automobile door hinge quality inspection device. Comprising a base, a bottom plate is fixedly connected to the upper side of the base, a side plate is fixedly connected to one side of the bottom plate, a vehicle door is arranged on one side of the side plate, and one side of the side plate is fixedly connected with the vehicle door through two hinge bodies. Relatively stable force is applied to the automobile door, the accuracy of the follow-up automobile door swing angle is ensured, then the automobile door is driven to swing within different angle ranges through the swing rod, the opening and closing actions of the automobile door in the using process are truly simulated, and whether the hinge body can enable the automobile door to be smoothly opened and closed or not can be visually judged. The auxiliary device is used for buffering the impact force generated in the swing process of the vehicle door, so that the vehicle door swings in a relatively constant-speed and stable state, and more reliable data support is provided for judging whether the quality of the hinge body is qualified or not.

Description

Technical Field

[0001] The invention relates to the technical field of door hinge manufacturing, and in particular to a quality inspection device for automobile door hinges. Background Art

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solid bodies and allow relative rotation between them. In automobile manufacturing, door hinges are important components for achieving rotational connection between doors and the body, which directly affects the opening and closing performance of doors. As a daily means of transportation, car doors need to withstand frequent opening and closing operations and maintain long-term stable operation in various complex environments and working conditions. This places extremely high demands on the quality of door hinges. Therefore, during the production process, accurate and reliable quality inspection methods are required to ensure that door hinges meet high performance standards.

[0003] At present, the existing door hinge quality inspection devices mainly adopt the method of fixing the hinge to be inspected between the inspection frame and the door, and then applying external force to the door through the impact device to make the door swing back and forth, so as to detect the hinge performance. However, this detection method has significant shortcomings. When the impact device applies force, it usually opens or closes the door in the form of sudden force, but the force generated at the moment of impact is not only complex but also difficult to control. Specifically: 1. Complexity and uncontrollability of force: The magnitude and direction of the impact force are difficult to adjust accurately, resulting in a greater randomness and uncertainty in the swing angle and speed of the door during the force process. This makes it difficult for the measurement results to reflect the true performance of the hinge, reducing the accuracy and reliability of the test data.

[0004] 2. Risk of door damage: When the door is suddenly closed, it may collide violently with the inspection frame due to inertia, or even rebound and hit the impact device, causing damage to the door itself, increasing the risk of equipment loss during the quality inspection process.

[0005] 3. Difficulty in intuitively evaluating performance: Since the impact device cannot simulate the progressive characteristics of the force applied to the door during actual use, the detection method is too simple and crude to accurately determine whether the hinge can achieve smooth opening and closing of the door, making it difficult to fully evaluate the performance of the hinge in actual use.

[0006] In order to solve the above problems, it is urgently necessary to design a car door hinge quality inspection device that can accurately control the impact force, reduce damage to the car door and equipment during the inspection process, and simulate actual usage conditions, so as to improve the accuracy and reliability of the inspection results, thereby better meeting the modern automobile manufacturing industry's demand for high-quality door hinges. Summary of the invention

[0007] The object of the present invention is to provide a vehicle door hinge quality inspection device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, a vehicle door hinge quality inspection device is provided, comprising a base, a bottom plate is fixedly connected to the upper side of the base, a side plate is fixedly connected to one side of the bottom plate, a vehicle door is arranged on one side of the side plate, one side of the side plate and the vehicle door are fixedly connected through two hinge bodies, a detection device is arranged on one side of the bottom plate, a support seat is arranged on the upper side of the bottom plate, the support seat is arranged tilted relative to the vehicle door, a swing device is arranged above the bottom plate, a mounting seat is fixedly connected to the upper side of the bottom plate, an auxiliary device and a fixing device are arranged on the upper side of the mounting seat, and the fixing device is arranged inside the support seat; Swing the door to fit one side of the door against the support seat. When the door fits against the support seat, the fixing device is driven to work. The fixing device works to adsorb the door to one side of the support seat, and applies a relatively stable force to the door, so that the door swings along a predetermined trajectory. After the car door is adsorbed on one side of the support seat, the swinging device is started, and the swinging device drives the car door to swing back and forth, realistically simulating the opening and closing action of the car door during use. The car door drives the auxiliary device to work during the swinging process, and the auxiliary device works to buffer the impact force generated by the car door during the swinging process, so that the car door swings at a relatively uniform and stable state.

[0009] As a further improvement of the present technical solution, the fixing device includes a plurality of suction cups fixedly connected to one side of the support seat, a plurality of openings are opened on one side of the support seat, and a plurality of the openings are connected to one end of the suction cup. A moving rod is arranged inside the suction cup, and a valve plate is fixedly connected to one end of the moving rod. The diameter of the valve plate is larger than the diameter of the opening. When one side of the car door is fitted with the suction cup, the car door first contacts the moving rod and pushes the moving rod to move. The moving rod drives the valve plate to move, so that the valve plate does not block the opening.

[0010] As a further improvement of the present technical solution, a plurality of sliding rods are fixedly connected to the inside of the support seat, and the sliding rods are symmetrically arranged in pairs on both sides of the valve plate, and the inside of the valve plate is slidably connected to the outside of the sliding rods. A compression spring is fixedly connected to one end of the valve plate and one side of the support seat, and the compression spring is sleeved on the sliding rod. When the valve plate moves, it moves on the sliding rod and is pushed back to its original position under the reaction force of the compression spring.

[0011] As a further improvement of the present technical solution, the swinging device includes a fixed rod fixedly connected to the upper side of the base plate, the upper end of the fixed rod is rotatably connected to a swing rod, the end of the swing rod away from the fixed rod is fixedly connected to a guide rod, the upper end of the guide rod is fixedly connected to the lower side of the vehicle door, the swinging of the swing rod drives the guide rod to move, and the movement of the guide rod drives the vehicle door to swing.

[0012] As a further improvement of the present technical solution, the auxiliary device includes a No. 1 support rod fixedly connected to the upper side of the mounting seat, the No. 1 support rod is rotatably connected to a No. 1 connecting rod on the outside, one end of the No. 1 connecting rod is rotatably connected to a fixing plate, one side of the fixing plate is fixedly connected to one side of the support seat, and when the vehicle door drives the support seat to move, the support seat drives the No. 1 connecting rod to rotate, thereby buffering the impact force generated by the vehicle door during the swinging process.

[0013] As a further improvement of the present technical solution, a No. 2 support rod is fixedly connected to the upper side of the mounting seat, and an L-shaped plate is rotatably connected to the outside of the No. 2 support rod, and both ends of the L-shaped plate are rotatably connected to a connecting block and a No. 2 connecting rod respectively, and the other end of the No. 2 connecting rod is rotatably connected to the upper side of the fixed plate, and one end of the connecting block is rotatably connected to one end of the No. 1 connecting rod, and the rotation of the No. 1 connecting rod drives the connecting block to rotate, the connecting block drives the L-shaped plate to rotate, and the L-shaped plate drives the No. 2 connecting rod to rotate.

[0014] As a further improvement of the present technical solution, two limit blocks are fixedly connected to the upper side of the mounting seat, and the two limit blocks are respectively arranged on both sides of the No. 1 connecting rod, and the upper side of the mounting seat and the upper side of the L-shaped plate are jointly fixedly connected with an extrusion spring.

[0015] As a further improvement of the present technical solution, a motor is fixedly connected to the upper side of the base, a rotating shaft is fixedly connected to the output end of the motor, the upper end of the rotating shaft passes through the bottom end of the base plate and is fixedly connected to a rotating rod, the other end of the rotating rod is rotatably connected to a push rod, the other end of the push rod is rotatably connected to the upper side of the swing rod, the motor drives the rotating rod to rotate, the rotating rod drives the push rod to rotate, and the push rod drives the swing rod to swing.

[0016] As a further improvement of the present technical solution, a mounting block is fixedly connected to the upper side of the base plate, and the guide rod slides inside the mounting block. A return spring is fixedly connected to the inner wall of the mounting block and one side of the guide rod. When the swing rod swings, it drives the guide rod to move inside the mounting block and squeeze the return spring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the hinge body to be tested can be fixedly installed between the side panel and the vehicle door for testing, the vehicle door is opened and rotated in the direction of the support seat, and multiple suction cups are adsorbed on one side of the vehicle door through the vacuum force, and a relatively stable force is applied to the vehicle door to ensure the accuracy of the subsequent door swinging angle, and then the vehicle door is driven to swing within different angle ranges through the swing rod, which truly simulates the opening and closing action of the vehicle door during use, and by observing the smoothness of the door swinging, it is possible to intuitively judge whether the hinge body can allow the vehicle door to be opened and closed smoothly, and it is possible to detect whether the hinge body can still ensure the flexible rotation of the vehicle door at various angles. When the vehicle door is opened or closed, the door driving auxiliary device buffers the impact force generated by the vehicle door during the swinging process, reduces the friction between the vehicle door and the hinge body, and makes the vehicle door swing in a relatively uniform and stable state, so that the resistance, torque and other parameters of the hinge body at different angles can be measured more accurately, providing more reliable data support for judging whether the quality of the hinge body is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the vehicle door of the present invention when it is opened; Figure 3 It is a schematic diagram of the structure of the vehicle door of the present invention when it is closed; Figure 4 is a cross-sectional schematic diagram of the base plate of the present invention; Figure 5 It is a structural schematic diagram of the support base of the present invention; Figure 6 It is a structural schematic diagram of the swing device of the present invention; Figure 7 It is a schematic diagram of the structure of the auxiliary device of the present invention when it is opened; Figure 8 It is a schematic diagram of the structure when the auxiliary device of the present invention is closed; Fig. 9 It is a cross-sectional schematic diagram of the fixing device of the present invention.

[0019] The meaning of each number in the figure is: 1. Base; 11. Bottom plate; 12. Side plate; 13. Hinge body; 14. Detection device; 15. Mounting seat; 16. Support seat; 2. Swinging device; 21. Motor; 22. Rotating shaft; 23. Rotating rod; 24. Push rod; 25. Fixed rod; 26. Swinging rod; 27. Guide rod; 28. Mounting block; 3. Auxiliary device; 31. No. 1 support rod; 32. No. 1 connecting rod; 33. Fixed plate; 34. Connecting block; 35. No. 2 support rod; 36. L-shaped plate; 37. No. 2 connecting rod; 38. Limiting block; 4. Fixing device; 42. Suction cup; 43. Moving rod; 44. Valve plate; 45. Sliding rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 3 As shown, the purpose of this embodiment is to provide a vehicle door hinge quality inspection device, including a base 1, a bottom plate 11 is fixedly connected to the upper side of the base 1, a detection device 14 is arranged on one side of the bottom plate 11, the detection device 14 can detect the number of times the door is opened and closed, the detection device 14 is installed at a position opposite to the door when it is closed, after the door is opened and closed once, the detection device 14 detects and records, a support seat 16 is arranged on the upper side of the bottom plate 11, the support seat 16 is arranged to be inclined relative to the door, a swing device 2 is arranged above the bottom plate 11, a mounting seat 15 is fixedly connected to the upper side of the bottom plate 11, an auxiliary device 3 and a fixing device 4 are arranged on the upper side of the mounting seat 15, and the fixing device 4 is arranged inside the support seat 16.

[0022] Swing the car door to fit one side of the car door with the support seat 16. When the car door and the support seat 16 are in contact, the fixing device 4 is driven to work. The fixing device 4 works to adsorb the car door to one side of the support seat 16, and applies a relatively stable force to the car door, so that the car door swings along a predetermined trajectory, ensuring the accuracy of the subsequent door swinging angle.

[0023] After the vehicle door is adsorbed on one side of the support seat 16, the swinging device 2 is started, and the swinging device 2 drives the vehicle door to swing back and forth, truly simulating the opening and closing action of the vehicle door during use. The vehicle door drives the auxiliary device 3 to work during the swinging process, and the auxiliary device 3 works to buffer the impact force generated by the vehicle door during the swinging process, so that the vehicle door swings at a relatively uniform and stable state, providing more reliable data support for judging whether the quality of the hinge body 13 is qualified.

[0024] See also Figure 4As shown, one side of the bottom plate 11 is fixedly connected to a side plate 12, one side of the side plate 12 is provided with a vehicle door, one side of the side plate 12 and the vehicle door are fixedly connected via two hinge bodies 13, and the hinge body 13 to be inspected can be fixedly installed between the side plate 12 and the vehicle door for inspection.

[0025] See also Figure 5 and Fig. 9 As shown, the fixing device 4 includes a plurality of suction cups 42 fixedly connected to one side of the support seat 16, a plurality of openings are opened on one side of the support seat 16, and the plurality of openings are connected to one end of the suction cup 42. A moving rod 43 is arranged inside the suction cup 42, and a valve plate 44 is fixedly connected to one end of the moving rod 43. The diameter of the valve plate 44 is larger than the diameter of the opening. An air pipe is fixedly connected to one side of the support seat 16 away from the suction cup 42, and one end of the air pipe is connected to the vacuum pump. Then, the car door is turned, the vacuum pump is turned on, and the car door is turned toward the support seat 16 so that one side of the car door is in contact with the suction cup. 42 fits together, the car door first contacts the moving rod 43 and pushes the moving rod 43 to move toward the inside of the support seat 16. Under the thrust of the moving rod 43, the valve plate 44 is pushed open. At this time, the valve plate 44 does not block the opening, and the vacuum force inside the support seat 16 enters the inside of the suction cup 42 through the opening to achieve adsorption of the car door, applying a relatively stable force to the car door, which can effectively prevent the car door from shaking, twisting or deviating from the expected swing plane, ensuring the accuracy of the car door swing angle, and facilitating the subsequent car door to swing according to the predetermined trajectory.

[0026] See also Fig. 9 As shown, the interior of the support seat 16 is fixedly connected with a plurality of slide rods 45, and the plurality of slide rods 45 are symmetrically arranged in pairs on both sides of the valve plate 44, and the interior of the valve plate 44 is slidably connected to the exterior of the slide rod 45, and one end of the valve plate 44 is fixedly connected with a compression spring to one side of the support seat 16, and the compression spring is sleeved on the slide rod 45. Since the valve plate 44 moves on the slide rod 45 and squeezes the compression spring when moving, when it is necessary to remove the suction cup 42 from the vehicle door, the vacuum pump stops working, and the valve plate 44 is pushed back to its original position under the reaction force of the compression spring. At this time, the valve plate 44 seals the opening, and the suction cup 42 loses its adsorption force without the action of the vacuum, so that the vehicle door is separated from the suction cup 42, and the disassembly work is completed.

[0027] See also Figure 4-Figure 6As shown, the swing device 2 includes a fixed rod 25 fixedly connected to the upper side of the bottom plate 11, the upper end of the fixed rod 25 is rotatably connected to the swing rod 26, the end of the swing rod 26 away from the fixed rod 25 is fixedly connected to the guide rod 27, the upper end of the guide rod 27 is fixedly connected to the lower side of the door, the upper side of the base 1 is fixedly connected to the motor 21, the output end of the motor 21 is fixedly connected to the shaft 22, the upper end of the shaft 22 passes through the bottom end of the bottom plate 11 and is fixedly connected to the rotating rod 23, the other end of the rotating rod 23 is rotatably connected to the push rod 24, the other end of the push rod 24 is connected to the upper side of the swing rod 26 Rotational connection, after the car door is adsorbed on the suction cup 42, the starting motor 21 drives the rotating rod 23 to rotate, the rotating rod 23 drives the push rod 24 to rotate, the push rod 24 drives the swing rod 26 to swing, the swing of the swing rod 26 drives the guide rod 27 to move, and the movement of the guide rod 27 drives the car door to swing within different angle ranges, truly simulating the opening and closing action of the car door during use. By observing the smoothness of the swinging of the car door, it can be intuitively judged whether the hinge body 13 can allow the car door to be opened and closed smoothly, and whether the hinge body 13 can still ensure the flexible rotation of the car door at these angles can be detected.

[0028] See also Figure 6 As shown, a mounting block 28 is fixedly connected to the upper side of the base plate 11, and a guide rod 27 slides inside the mounting block 28. A return spring is fixedly connected to the inner wall of the mounting block 28 and one side of the guide rod 27. When the swing rod 26 swings, it drives the guide rod 27 to move inside the mounting block 28 and squeezes the return spring. The mounting block 28 guides the elastic force of the return spring so that the elastic force of the return spring acts on the door to the maximum extent, so that the door swings from a closed state to an open state, thereby improving the stability of the door when it is automatically opened.

[0029] See also Figure 7 and Figure 8As shown, the auxiliary device 3 includes a No. 1 support rod 31 fixedly connected to the upper side of the mounting seat 15, the No. 1 support rod 31 is externally rotatably connected to a No. 1 connecting rod 32, one end of the No. 1 connecting rod 32 is rotatably connected to a fixing plate 33, one side of the fixing plate 33 is fixedly connected to one side of the support seat 16, a No. 2 support rod 35 is fixedly connected to the upper side of the mounting seat 15, the No. 2 support rod 35 is externally rotatably connected to an L-shaped plate 36, the two ends of the L-shaped plate 36 are rotatably connected to a connecting block 34 and a No. 2 connecting rod 37 respectively, the other end of the No. 2 connecting rod 37 is rotatably connected to the upper side of the fixing plate 33, one end of the connecting block 34 is rotatably connected to one end of the No. 1 connecting rod 32, and when the door is closed, the door drives the support rod 35 to rotate. The seat 16 moves, and the support seat 16 drives the No. 1 connecting rod 32 to rotate. The rotation of the No. 1 connecting rod 32 drives the connecting block 34 to rotate. The upper side of the mounting seat 15 and the upper side of the L-shaped plate 36 are fixedly connected with an extrusion spring. The connecting block 34 drives the L-shaped plate 36 to rotate and compress the extrusion spring. The rotation of the L-shaped plate 36 drives the No. 2 connecting rod 37 to rotate, thereby achieving buffering of the impact force generated by the door during the swinging process, reducing the friction between the door and the hinge body 13, and making the door swing at a relatively uniform and stable state, so as to more accurately measure the resistance, torque and other parameters of the hinge body 13 at different angles, and provide more reliable data support for judging whether the quality of the hinge body 13 is qualified.

[0030] See also Figure 7 and Figure 8 As shown, two limit blocks 38 are fixedly connected to the upper side of the mounting seat 15, and the two limit blocks 38 are respectively arranged on both sides of the No. 1 connecting rod 32. When the door is open, the No. 1 connecting rod 32 is located on one side of the limit block 38. When the door swings to the closed state, the No. 1 connecting rod 32 rotates to the other side of the limit block 38. The rotation angle of the No. 1 connecting rod 32 is limited by the two limit blocks 38, which is based on the maximum travel that the door can rotate to. Create a relatively stable detection environment for the door, so that the measured parameters can more truly reflect the quality status of the door hinge body 13.

[0031] When the automobile door hinge quality inspection device of the present invention is used in practice, the hinge body 13 to be inspected can be fixedly installed between the side panel 12 and the door for inspection. Then, the vacuum pump is turned on, the door is rotated, and the door is rotated toward the support seat 16 so that one side of the door fits with the suction cup 42. The door first contacts the moving rod 43 and pushes the moving rod 43 to move toward the inside of the support seat 16. Under the thrust of the moving rod 43, the valve plate 44 is pushed open. At this time, the valve plate 44 does not block the opening. The vacuum force inside the support seat 16 enters the inside of the suction cup 42 through the opening to achieve adsorption of the door. By applying a relatively stable force to the door, it can effectively prevent the door from shaking, twisting or deviating from the expected swing plane, thereby ensuring the accuracy of the door swing angle and facilitating the subsequent door to swing according to a predetermined trajectory.

[0032] After the car door is adsorbed on the suction cup 42, the starting motor 21 drives the rotating rod 23 to rotate, the rotating rod 23 drives the pushing rod 24 to rotate, the pushing rod 24 drives the swinging rod 26 to swing, the swinging rod 26 drives the guide rod 27 to move, and the movement of the guide rod 27 drives the car door to swing within different angle ranges, truly simulating the opening and closing action of the car door during use. By observing the smoothness of the swinging of the car door, it can be intuitively judged whether the hinge body 13 can allow the car door to be opened and closed smoothly, and whether the hinge body 13 can still ensure the flexible rotation of the car door at these angles can be detected.

[0033] When the vehicle door is closed, the vehicle door drives the support seat 16 to move, and the support seat 16 drives the No. 1 connecting rod 32 to rotate, and the rotation of the No. 1 connecting rod 32 drives the connecting block 34 to rotate, and the connecting block 34 drives the L-shaped plate 36 to rotate and compress the extrusion spring, and the rotation of the L-shaped plate 36 drives the No. 2 connecting rod 37 to rotate, thereby achieving buffering of the impact force generated by the vehicle door during the swinging process, reducing the friction between the vehicle door and the hinge body 13, and making the vehicle door swing at a relatively uniform and stable state, so as to more accurately measure the resistance, torque and other parameters of the hinge body 13 at different angles, and provide more reliable data support for judging whether the quality of the hinge body 13 is qualified.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle door hinge quality inspection device, comprising a base (1), wherein the upper side of the base (1) is fixedly connected to a bottom plate (11), characterized in that: A side panel (12) is fixedly connected to one side of the bottom panel (11), a vehicle door is arranged on one side of the side panel (12), one side of the side panel (12) and the vehicle door are fixedly connected via two hinge bodies (13), a detection device (14) is arranged on one side of the bottom panel (11), a support seat (16) is arranged on the upper side of the bottom panel (11), the support seat (16) is arranged to be inclined relative to the vehicle door, a swing device (2) is arranged above the bottom panel (11), a mounting seat (15) is fixedly connected to the upper side of the bottom panel (11), an auxiliary device (3) and a fixing device (4) are arranged on the upper side of the mounting seat (15), and the fixing device (4) is arranged inside the support seat (16); The vehicle door is swung to fit one side of the vehicle door against the support seat (16); when the vehicle door fits against the support seat (16), the fixing device (4) is driven to work; the fixing device (4) works to adsorb the vehicle door against one side of the support seat (16), exerting a relatively stable force on the vehicle door, so that the vehicle door swings along a predetermined trajectory; After the vehicle door is adsorbed onto one side of the support seat (16), the swing device (2) is started to work. The swing device (2) drives the vehicle door to swing back and forth, realistically simulating the opening and closing action of the vehicle door during use. The vehicle door drives the auxiliary device (3) to work during the swinging process. The auxiliary device (3) works to buffer the impact force generated by the vehicle door during the swinging process, so that the vehicle door swings at a relatively uniform speed and in a stable state.

2. The automobile door hinge quality inspection device according to claim 1, characterized in that: The fixing device (4) comprises a plurality of suction cups (42) fixedly connected to one side of a support seat (16); a plurality of openings are provided on one side of the support seat (16); a plurality of openings are communicated with one end of the suction cup (42); a moving rod (43) is provided inside the suction cup (42); a valve plate (44) is fixedly connected to one end of the moving rod (43); the diameter of the valve plate (44) is larger than the diameter of the opening; when one side of the vehicle door is fitted with the suction cup (42), the vehicle door first contacts the moving rod (43) and pushes the moving rod (43) to move; the moving rod (43) drives the valve plate (44) to move, so that the valve plate (44) does not block the opening.

3. The automobile door hinge quality inspection device according to claim 2, characterized in that: A plurality of slide bars (45) are fixedly connected to the interior of the support seat (16), and the plurality of slide bars (45) are symmetrically arranged in pairs on both sides of the valve plate (44), and the interior of the valve plate (44) is slidably connected to the exterior of the slide bars (45). A compression spring is fixedly connected to one end of the valve plate (44) and one side of the support seat (16), and the compression spring is sleeved on the slide bars (45). When the valve plate (44) moves, it moves on the slide bars (45) and is pushed back to its original position under the reaction force of the compression spring.

4. The automobile door hinge quality inspection device according to claim 2, characterized in that: The swing device (2) comprises a fixed rod (25) fixedly connected to the upper side of the bottom plate (11); the upper end of the fixed rod (25) is rotatably connected to a swing rod (26); the end of the swing rod (26) away from the fixed rod (25) is fixedly connected to a guide rod (27); the upper end of the guide rod (27) is fixedly connected to the lower side of the vehicle door; the swing rod (26) swings to drive the guide rod (27) to move; and the movement of the guide rod (27) drives the vehicle door to swing.

5. The automobile door hinge quality inspection device according to claim 1, characterized in that: The auxiliary device (3) comprises a No. 1 support rod (31) fixedly connected to the upper side of the mounting seat (15); the No. 1 support rod (31) is rotatably connected to the outside of the No. 1 connecting rod (32); one end of the No. 1 connecting rod (32) is rotatably connected to a fixing plate (33); one side of the fixing plate (33) is fixedly connected to one side of the support seat (16); when the vehicle door drives the support seat (16) to move, the support seat (16) drives the No. 1 connecting rod (32) to rotate, thereby buffering the impact force generated by the vehicle door during the swinging process.

6. The automobile door hinge quality inspection device according to claim 1, characterized in that: A No. 2 support rod (35) is fixedly connected to the upper side of the mounting seat (15); an L-shaped plate (36) is rotatably connected to the outside of the No. 2 support rod (35); two ends of the L-shaped plate (36) are rotatably connected to a connecting block (34) and a No. 2 connecting rod (37); the other end of the No. 2 connecting rod (37) is rotatably connected to the upper side of the fixed plate (33); one end of the connecting block (34) is rotatably connected to one end of the No. 1 connecting rod (32); the No. 1 connecting rod (32) rotates to drive the connecting block (34); the connecting block (34) drives the L-shaped plate (36) to rotate; the L-shaped plate (36) drives the No. 2 connecting rod (37) to rotate.

7. The automobile door hinge quality inspection device according to claim 1, characterized in that: Two limit blocks (38) are fixedly connected to the upper side of the mounting seat (15), and the two limit blocks (38) are respectively arranged on both sides of the No. 1 connecting rod (32), and the upper side of the mounting seat (15) and the upper side of the L-shaped plate (36) are jointly fixedly connected with a compression spring.

8. The automobile door hinge quality inspection device according to claim 1, characterized in that: A motor (21) is fixedly connected to the upper side of the base (1); an output end of the motor (21) is fixedly connected to a rotating shaft (22); an upper end of the rotating shaft (22) passes through the bottom end of the base plate (11) and is fixedly connected to a rotating rod (23); the other end of the rotating rod (23) is rotatably connected to a push rod (24); the other end of the push rod (24) is rotatably connected to the upper side of a swing rod (26); the motor (21) drives the rotating rod (23) to rotate; the rotating rod (23) drives the push rod (24) to rotate; and the push rod (24) drives the swing rod (26) to swing.

9. The automobile door hinge quality inspection device according to claim 1, characterized in that: A mounting block (28) is fixedly connected to the upper side of the base plate (11), and the guide rod (27) slides inside the mounting block (28). A return spring is fixedly connected between the inner wall of the mounting block (28) and one side of the guide rod (27). When the swing rod (26) swings, it drives the guide rod (27) to move inside the mounting block (28) and squeeze the return spring.

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