Active pre-tightening safety belt testing device

Abstract

The utility model relates to the technical field of safety belt testing, in particular to an active type pre-tightening safety belt testing device, which comprises a mounting base and an anti-falling assembly, a through groove is arranged on the mounting base, a guide piece is arranged at the through groove of the mounting base, a mounting piece is arranged on the guide piece, a hanging piece is arranged at an inner hole of the mounting piece, and the anti-falling assembly is arranged on the mounting piece. A sensor is arranged at the other end of the mounting piece, the other end of the sensor is arranged on the fixing piece, the fixing piece is arranged on the guide piece, and the anti-falling assembly is arranged on the hanging piece and is connected with the mounting piece in a matched mode; the driving assembly is used for adjusting the working position of the mounting part; operation is convenient, and testing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of seat belt testing, in particular to an active pre-tightening seat belt testing device. Background Art

[0002] With the rapid development of the automobile industry and the continuous improvement of consumers' awareness of driving safety, seat belts, as an important part of the vehicle's passive safety system, have a direct impact on the safety protection of passengers in collision accidents. In particular, active pre-tensioned seat belts can restrain the occupants' bodies more quickly and effectively by pre-tightening them at the moment of collision, significantly reducing collision injuries. In order to ensure the reliability and effectiveness of active pre-tensioned seat belts in practical applications, it is essential to conduct rigorous performance tests on them. In particular, it is crucial to test the strength of the seat belts after they are pre-tightened to prevent the strong impact force caused by the high inertia at high speeds from damaging the pre-tightened seat belts. Therefore, it is necessary to conduct a traction strength test on the pre-tightened seat belts before leaving the factory. The traditional test device has a complicated operating procedure when the pre-tightened seat belts are hung and towed, which affects the test efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an active pre-tensioning seat belt testing device which is convenient to operate and has high testing efficiency.

[0004] Preferably, the device comprises: a mounting base and an anti-slip assembly, wherein the mounting base is provided with a through slot, a guide piece is provided at the through slot of the mounting base, a mounting piece is provided on the guide piece, a hanging piece is provided at the inner hole of the mounting piece, a sensor is provided at the other end of the mounting piece, the other end of the sensor is provided on the fixing piece, the fixing piece is provided on the guide piece, and the anti-slip assembly is provided on the hanging piece and is connected with the mounting piece in cooperation;

[0005] Drive assembly, the drive assembly is used to adjust the working position of the mounting part.

[0006] Furthermore, the driving component includes a spur rack arranged in the inner groove of the mounting part and the inner cavity of the fixing part, a servo motor is arranged inside the mounting base, the output end of the servo motor is arranged on the driving shaft, a transmission part is coaxially arranged on the driving shaft, a transmission gear is coaxially arranged on the transmission part, the transmission gear is meshingly connected with the spur rack, a transmission component is arranged on the transmission part, and the transmission component is used to limit the relative rotation of the driving shaft and the transmission part.

[0007] Preferably, the transmission assembly includes a positioning member arranged on the transmission member, a moving member is arranged in the groove cavity of the positioning member, a limiting member is arranged on the moving member, the limiting member passes through the through hole of the positioning member, a plurality of groups of limiting grooves are equidistantly arranged on the driving shaft, the limiting member is matingly contacted and connected with the limiting grooves of the driving shaft, an adjusting assembly is arranged on the positioning member, a first spring is arranged on the adjusting assembly, and the other end of the first spring is arranged on the moving member.

[0008] Furthermore, the adjustment component includes a threaded rod arranged inside the threaded hole of the positioning member, a conductive member is arranged on the threaded rod, the first spring is arranged on the conductive member, and an adjustment member is arranged at the other end of the threaded rod.

[0009] Preferably, the anti-drop assembly includes a swinging member arranged on the hanging member, a connecting member is arranged on the swinging member through the mounting assembly, a positioning groove is arranged on the mounting member, and the connecting member is arranged inside the positioning groove of the mounting member.

[0010] Furthermore, the mounting assembly includes a support member arranged on the swinging member, a piston member is arranged at the axial hole of the support member, a second spring is arranged on the piston member, the other end of the second spring is arranged on the support member, an extension member is arranged at the other end of the piston member, and a connecting member is arranged on the extension member.

[0011] Preferably, a protective member is provided on the swinging member, a fixing groove is provided on the mounting member, and the protective member is arranged inside the fixing groove of the mounting member.

[0012] Furthermore, an auxiliary component is arranged inside the mounting base, and the drive shaft is arranged inside the mounting hole of the auxiliary component.

[0013] Preferably, a plurality of groups of adjustment feet are provided at the bottom end of the mounting base.

[0014] Furthermore, an inspection window is provided on the mounting base, and a sealing member is provided at the inspection window.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the moving trajectories of the mounting part and the fixing part are limited by the guide part, the safety belt is easy to be pulled by the hanging part, the mounting part drives the safety belt on the hanging part to be pulled by the driving component, which is used to quickly pull the safety belt to test the protective strength of the safety belt in a collision, and the driving component is used to monitor the traction force of the safety belt in real time when the safety belt is pulled by the sensor. The hanging part is designed as a cylindrical structure, which can protect the safety belt and prevent it from being scratched. The setting of the anti-detachment component effectively prevents the safety belt from accidentally detaching from the hanging part during the test, thereby ensuring the safety of the test process, avoiding the risk of equipment damage or personal injury, and creating a safe and stable testing environment for laboratory operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of the utility model;

[0019] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0020] Figure 5 It is a schematic diagram of the parts structure of the utility model;

[0021] Markings in the attached drawings: 1. Mounting base; 2. Guide member; 3. Mounting member; 4. Hanging member; 5. Sensor; 6. Fixing member; 7. Spur rack; 8. Servo motor; 9. Driving shaft; 10. Transmission member; 11. Positioning member; 12. Moving member; 13. Limiting member; 14. First spring; 15. Threaded rod; 16. Conducting member; 17. Adjusting member; 18. Swinging member; 19. Connecting member; 20. Support member; 21. Piston member; 22. Second spring; 23. Extension member; 24. Protective member; 25. Adjusting foot; 26. Sealing member; 27. Auxiliary member; 29. ​​Transmission gear. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figures 1 to 5 As shown, the active pre-tensioning seat belt test device of the utility model comprises:

[0024] A mounting base 1 and an anti-slip assembly, wherein a through groove is provided on the mounting base 1, a guide member 2 is provided at the through groove of the mounting base 1, a mounting member 3 is slidably provided on the guide member 2, a hanging member 4 is provided at the inner hole of the mounting member 3, a sensor 5 is provided at the other end of the mounting member 3, the other end of the sensor 5 is provided on a fixing member 6, the fixing member 6 is slidably provided on the guide member 2, the mounting member 3 and the fixing member 6 are both slidably connected to the cavity wall of the mounting base 1, the anti-slip assembly is provided on the hanging member 4 and is connected with the mounting member 3, the hanging member 4 is provided in a cylindrical structure for pulling the safety belt, and a plurality of groups of adjustment feet 25 are provided at the bottom end of the mounting base 1;

[0025] The driving assembly is used to adjust the working position of the mounting member 3; the moving trajectories of the mounting member 3 and the fixing member 6 are limited by the guide member 2, the safety belt is easy to be pulled by the hanging member 4, and the mounting member 3 drives the safety belt on the hanging member 4 to be pulled by the driving assembly, which is used to quickly pull the safety belt to test the protective strength of the safety belt in a collision; the driving assembly is used to monitor the traction force of the safety belt in real time when the safety belt is pulled by the sensor 5; the hanging member 4 is designed as a cylindrical structure, which can protect the safety belt and prevent it from being scratched; the multiple groups of adjustment feet 25 arranged at the bottom of the mounting base 1 enable the entire test device to adapt to the flatness requirements of different test tables, ensure the stability of the test process, and further improve the applicability and flexibility of the device; the setting of the anti-detachment assembly effectively prevents the safety belt from accidentally detaching from the hanging member 4 during the test, ensures the safety of the test process, avoids the risk of equipment damage or personal injury, and creates a safe and stable test environment for laboratory operators.

[0026] like Figures 1 to 5 As shown, as a preferred solution, the driving assembly includes a spur rack 7 arranged in the inner groove of the mounting member 3 and the inner cavity of the fixing member 6, a servo motor 8 is arranged inside the mounting base 1, and the output end of the servo motor 8 is arranged on the driving shaft 9, and a transmission member 10 is coaxially arranged on the driving shaft 9 for rotation, and a transmission gear 29 is coaxially arranged on the transmission member 10, and the transmission gear 29 is meshed and transmitted with the spur rack 7, and a transmission assembly is arranged on the transmission member 10, and the transmission assembly is used to limit the relative rotation of the driving shaft 9 and the transmission member 10, and an auxiliary member 27 is arranged inside the mounting base 1, and the driving shaft 9 is arranged inside the mounting hole of the auxiliary member 27; driven by the servo motor 8, in conjunction with precision transmission components such as the spur rack 7 and the transmission gear 29, precise control of the mounting member 3 and the hanging member 4 thereon is achieved, and the servo motor 8, with its high precision and high responsiveness, ensures accurate output and real-time adjustment of the traction force of the seat belt, which is conducive to simulating preload under different working conditions. Force requirements, a comprehensive and detailed evaluation of the preload performance of the seat belt is carried out. The meshing transmission connection between the transmission gear 29 and the spur rack 7 ensures efficient and stable power transmission, avoids energy loss and mechanical wear in the transmission process, and improves the operating efficiency and durability of the entire test device. The setting of the transmission assembly effectively limits the relative rotation between the drive shaft 9 and the transmission member 10, and ensures that the servo motor 8 drives the transmission gear 29 to rotate. The auxiliary member 27 arranged inside the mounting base 1 provides a stable mounting hole for the drive shaft 9, ensuring the stability and concentricity of the drive shaft 9 at high-speed operation, and reducing the transmission error and equipment vibration caused by axial or radial runout. The existence of the auxiliary member 27 needs to be emphasized here. By controlling the rotation speed of the servo motor 8, the protection strength of the seat belt in a collision at the synchronous vehicle speed can be simulated, and it also plays a role in mechanical protection of the drive assembly and prolongs the service life of key components.

[0027] like Figures 1 to 5 As shown, as a preferred embodiment, further, the transmission assembly includes a positioning member 11 arranged on the transmission member 10, a moving member 12 is slidably arranged in the groove cavity of the positioning member 11, a limiting member 13 is arranged on the moving member 12, the limiting member 13 passes through the through hole of the positioning member 11, a plurality of groups of limiting grooves are equidistantly arranged on the driving shaft 9, the limiting member 13 is contacted and connected with the limiting groove of the driving shaft 9, and a chamfer is arranged at the contact end of the limiting member 13 and the connecting member 19, an adjusting assembly is arranged on the positioning member 11, a first spring 14 is arranged on the adjusting assembly, and the other end of the first spring 14 is arranged on the moving member 12, the adjusting assembly includes a threaded rod 15 arranged inside the threaded hole of the positioning member 11, a conducting member 16 is rotatably arranged on the threaded rod 15, the conducting member 16 is slidably arranged in the groove cavity of the positioning member 11, the first spring 14 is arranged on the conducting member 16, and an adjusting member 17 is arranged at the other end of the threaded rod 15 The moving member 12 is slidably supported on the transmission member 10 through the positioning member 11, and the moving trajectory of the limiting member 13 is limited by the cooperation between the moving member 12 and the positioning member 11. The positioning member 13 and the limiting groove of the driving shaft 9 are stably fitted through the first spring 14. The driving shaft 9 synchronously drives the transmission member 10 to rotate through the cooperation between the positioning member 13 and the limiting groove of the driving shaft 9. The connection position of the positioning member 13 and the driving shaft 9 can be adjusted through the first spring 14. The servo motor 8 is protected from overload by the arrangement of the positioning member 13 and the driving shaft 9. The difficulty of rotating the threaded rod 15 is reduced through the adjusting member 17. The position of the conducting member 16 located inside the positioning member 11 is adjusted by rotating the threaded rod 15. The first spring 14 controls the driving force of 13 through the position adjustment of the conducting member 16. The traction force of the mounting member 4 is controlled by controlling the driving force of 13, thereby improving the functionality of the device.

[0028] like Figures 1 to 5As shown, as a preferred embodiment, the anti-slip assembly includes a swinging member 18 rotatably arranged on the hanging member 4, a connecting member 19 is arranged on the swinging member 18 through the mounting assembly, a positioning groove is arranged on the mounting member 3, the positioning groove of the mounting member 3 is arranged in an arc shape with the hanging member 4 as the axis, and a groove is arranged at the midpoint of the arc shape, the connecting member 19 is arranged inside the positioning groove of the mounting member 3, the mounting assembly includes a support member 20 arranged on the swinging member 18, a piston member 21 is slidably arranged at the axial hole of the support member 20, a second spring 22 is arranged on the piston member 21, the other end of the second spring 22 is arranged on the support member 20, an extension member 23 is arranged at the other end of the piston member 21, and the connecting member 19 is arranged on the extension member 23; the anti-slip assembly is arranged through the swinging member The synergistic effect of the moving part 18, the connecting part 19, the positioning groove, the groove, the supporting part 20, the piston part 21, the second spring 22 and the extending part 23 realizes the effective anti-slip protection for the safety belt hung on the hanging part 4. When the safety belt is subjected to force and slides sideways, the swinging part 18 can block the safety belt, and the piston part 21 is slidably installed on the swinging part 18 through the supporting part 20, and the piston part 21 provides traction through the second spring 22. The connecting part 19 is installed on the piston part through the extending part 23, and the working position of the swinging part 18 is limited by the cooperation of the connecting part 19 and the positioning groove of the mounting part 3, and the working position of the swinging part 18 is locked by the cooperation of the connecting part 19 and the groove of the mounting part 3 through the second spring 22.

[0029] like Figures 1 to 5 As shown, as a preferred solution, a protective member 24 is provided on the swing member 18, and a fixing groove is provided on the mounting member 3. The fixing groove of the mounting member 3 is an inner arc groove with the hanging member 4 as the axis, and the protective member 24 is provided inside the fixing groove of the mounting member 3; the protective member 24 cooperates with the fixing groove of the mounting member 3 so that the hanging member 4 can protect the safety belt when pulling, thereby improving the working strength of the hanging member 4.

[0030] like Figures 1 to 5 As shown, as a preferred solution, an inspection window is provided on the mounting base 1, and a seal 26 is provided at the inspection window; the inspection window makes it easy to adjust the threaded column 15, and the seal 25 provides dust protection for the device.

[0031] like Figures 1 to 5 As shown, as a preferred solution, its working process is as follows:

[0032] First, the seat belt to be tested is hung on the hanging part 4, and then the seat belt is protected from falling off through the connection part 19 and the mounting part 3. The servo motor 8 is started, and its rotation speed is controlled to simulate the situation when a collision occurs at different vehicle speeds. The output end of the servo motor 8 drives the drive shaft 9 to rotate, and then drives the transmission member 10 to rotate coaxially. The transmission gear 29 on the transmission member 10 is meshed with the spur rack 7 in the mounting part 3 and the fixing part 6 to achieve precise control of the mounting part 3 and the hanging part 4 thereon. The mounting part 3 drives the hanging part 4 to quickly pull the seat belt to simulate the pre-tightening process of the seat belt in a collision. The sensor 5 monitors the traction force of the seat belt during the traction process in real time, and the data is fed back to the control system for evaluating the protective strength of the seat belt. When the traction force of the hanging part 4 on the seat belt is greater than the sliding friction force between the limiter 13 and the drive shaft 9, the drive shaft 9 and the transmission member 10 rotate relative to each other, and the servo motor 8 is overload protected. Before the test, the threaded rod 15 of the device can be adjusted through the inspection window to control the relative rotation resistance between the limiter 13 and the transmission member 10.

[0033] The installation method, connection method or setting method of the active pre-tensioning seat belt test device of the utility model are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Active pre-tensioning seat belt test device, characterized in that: include: A mounting base and an anti-slip assembly, wherein the mounting base is provided with a through slot, a guide is provided at the through slot of the mounting base, a mounting piece is provided on the guide, a hanging piece is provided at the inner hole of the mounting piece, a sensor is provided at the other end of the mounting piece, the other end of the sensor is provided on the fixing piece, the fixing piece is provided on the guide piece, and the anti-slip assembly is provided on the hanging piece and is connected with the mounting piece; A drive assembly is used to adjust the working position of the mounting member.

2. The active pre-tensioning seat belt test device according to claim 1, characterized in that: The driving assembly includes a spur rack arranged in the inner groove of the mounting member and the inner cavity of the fixing member, a servo motor is arranged inside the mounting base, the output end of the servo motor is arranged on the driving shaft, a transmission member is coaxially arranged on the driving shaft, a transmission gear is coaxially arranged on the transmission member, the transmission gear is meshed and connected with the spur rack, a transmission assembly is arranged on the transmission member, and the transmission assembly is used to limit the relative rotation of the driving shaft and the transmission member.

3. The active pre-tensioning seat belt test device according to claim 2, characterized in that: The transmission assembly includes a positioning member arranged on the transmission member, a moving member is arranged in the groove cavity of the positioning member, a limiting member is arranged on the moving member, the limiting member passes through the through hole of the positioning member, a plurality of groups of limiting grooves are equidistantly arranged on the driving shaft, the limiting member is contacted and connected with the limiting grooves of the driving shaft, an adjusting assembly is arranged on the positioning member, a first spring is arranged on the adjusting assembly, and the other end of the first spring is arranged on the moving member.

4. The active pre-tensioning seat belt test device according to claim 3, characterized in that: The adjustment component comprises a threaded rod arranged inside the threaded hole of the positioning member, a conductive member is arranged on the threaded rod, the first spring is arranged on the conductive member, and an adjustment member is arranged at the other end of the threaded rod.

5. The active pre-tensioning seat belt test device according to claim 1, characterized in that: The anti-drop assembly comprises a swinging member arranged on the hanging member, a connecting member is arranged on the swinging member through the mounting assembly, a positioning groove is arranged on the mounting member, and the connecting member is arranged inside the positioning groove of the mounting member.

6. The active pre-tensioning seat belt test device according to claim 5, characterized in that: The mounting assembly includes a support member arranged on the swing member, a piston member is arranged at the axial hole of the support member, a second spring is arranged on the piston member, the other end of the second spring is arranged on the support member, an extension member is arranged at the other end of the piston member, and the connecting member is arranged on the extension member.

7. The active pre-tensioning seat belt test device according to claim 5, characterized in that: The swinging member is provided with a protection member, the mounting member is provided with a fixing groove, and the protection member is arranged inside the fixing groove of the mounting member.

8. The active pre-tensioning seat belt test device according to claim 2, characterized in that: An auxiliary component is arranged inside the mounting base, and the driving shaft is arranged inside a mounting hole of the auxiliary component.

9. The active pre-tensioning seat belt test device according to claim 1, characterized in that: A plurality of groups of adjustment feet are arranged at the bottom end of the mounting base.

10. The active pre-tensioning seat belt test device according to claim 1, characterized in that: An inspection window is arranged on the installation base, and a sealing member is arranged at the inspection window.

Images