Safety belt height adjusting mechanism

Abstract

The utility model relates to the technical field of safety belts, in particular to a safety belt height adjusting mechanism which comprises a guide rail, a sliding block, a controllable air spring and an operation assembly. The guide rail is fixed to the side face of a vehicle body and provided with a guide groove extending in the height direction. The sliding block is arranged in the guide groove in a sliding manner, and a safety belt mounting part is arranged on the sliding block; the controllable air spring is arranged in the height direction of the guide groove, a sleeve of the controllable air spring is fixedly connected with the guide rail, and the end of a guide rod is fixedly connected with the sliding block. The operation assembly comprises a shell, a switch, an elastic piece and a brake cable, the shell is fixed to the outer side of the sliding block, one end of the switch is rotationally connected with the shell, the elastic piece is arranged between a switch handle and the shell, and the two ends of the brake cable are fixedly connected with the switch and a needle valve of the controllable air spring respectively; stepless adjustment of the height of the safety belt is achieved, and the safety belt is suitable for different drivers and passengers.

Description

Technical Field

[0001] This utility model relates to the technical field of seat belts, and in particular to a seat belt height adjustment mechanism. Background Technology

[0002] A seatbelt is a safety device used in vehicles and other means of transportation. Its main function is to restrain occupants in their seats during sudden events such as collisions and emergency braking, preventing them from colliding with hard objects inside the vehicle or being ejected from the vehicle due to the impact force caused by inertia, thus effectively reducing the risk of injury or death. It generally consists of webbing, a retractor, anchor points, a latch, and fasteners. The webbing directly restrains the body, the retractor automatically retracts and extends the webbing, the anchor points secure the seatbelt to the vehicle body, and the latch and fasteners connect and disconnect the webbing. To adjust the seatbelt's position on the vehicle pillars and change the relative position of the webbing to the occupants' bodies, a seatbelt height adjustment mechanism is usually provided. Most existing seatbelt height adjustment mechanisms use a slot-type structure, which adjusts the height by inserting an adjustment slider into slots of different heights. However, slot-type seatbelt height adjustment mechanisms only support a limited range of height adjustments and cannot fully accommodate occupants of different heights and body types, thus having certain limitations. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a seat belt height adjustment mechanism that enables stepless adjustment of seat belt height and adapts to different drivers and passengers.

[0004] The seat belt height adjustment mechanism of this utility model includes a guide rail, a slider, a controllable gas spring, and an operating component. The guide rail is fixed to the side of the vehicle body and has a guide groove extending along the height direction. The slider is slidably disposed in the guide groove and has a seat belt mounting part on the slider. The controllable gas spring is disposed along the height direction of the guide groove, the sleeve of the controllable gas spring is fixedly connected to the guide rail, and the end of the guide rod is fixedly connected to the slider. The operating component includes a housing, a switch, an elastic element, and a brake cable. The housing is fixed to the outside of the slider, one end of the switch is rotatably connected to the housing, the elastic element is disposed between the switch handle and the housing, and both ends of the brake cable are fixedly connected to the switch and the needle valve of the controllable gas spring, respectively.

[0005] As a preferred embodiment of this utility model, the slider is provided with guide protrusions on both sides, and the guide groove is provided with guide grooves on both sides that cooperate with the guide protrusions. The guide protrusions are slidably disposed in the guide grooves.

[0006] As a preferred embodiment of this utility model, both ends of the guide groove are provided with buffer bumps for limiting and buffering the slider.

[0007] As a preferred embodiment of this utility model, gripping parts are provided on both sides of the shell.

[0008] As a preferred embodiment of this utility model, the switch is disposed on one or both sides of the housing, and the rotation direction of the switch opening and closing operation is perpendicular to the gripping direction of the gripping part.

[0009] As a preferred embodiment of this utility model, the seat belt mounting part includes a mounting hole and a reinforcing rib. The mounting hole is used to pass the seat belt through, and the reinforcing rib is arranged around the mounting hole to enhance the strength of the mounting part.

[0010] As a preferred embodiment of this utility model, the slider is provided with a locking block for limiting and guiding the gate line.

[0011] As a preferred embodiment of this utility model, the slider and guide rail are made of high-strength plastic or metal materials.

[0012] Compared to existing technologies, this invention achieves stepless adjustment of seatbelt height by using a controllable gas spring in conjunction with an operating component. Passengers can precisely adjust the seatbelt's position on the vehicle pillar by controlling the extension and retraction of the controllable gas spring through the operating component, according to their own height and body type. This changes the relative position of the webbing to the body, resulting in the most comfortable and safe restraint. Simultaneously, the guiding structure of the slider and guide rail, the buffer bumper, and the reinforcing ribs ensure a smooth and stable adjustment process, improving the overall structural stability and safety, and enhancing the applicability and reliability of the seatbelt height adjustment mechanism. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0015] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of section AA in the middle;

[0016] The following are labels in the attached diagram: 1. Guide rail; 11. Guide groove; 12. Guide recess; 13. Buffer bumper; 2. Slider; 21. Seat belt mounting part; 211. Mounting hole; 212. Reinforcing rib; 22. Guide protrusion; 23. Locking block; 3. Controllable gas spring; 31. Sleeve; 32. Guide rod; 33. Needle valve; 4. Operating component; 41. Housing; 411. Grip part; 42. Switch; 43. Elastic element; 44. Brake cable. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Reference Figures 1 to 3 This embodiment provides a seat belt height adjustment mechanism, including a guide rail 1, a slider 2, a controllable gas spring 3, and an operating component 4. The guide rail 1 is mounted on the side of the vehicle body by a fastener and has a guide groove 11 extending along the height direction to provide a guide path for the sliding of the slider 2. The slider 2 is slidably set in the guide groove 11 and has a seat belt mounting part 21. When the slider 2 slides in the guide groove 11, it can drive the seat belt mounting part 21 to move, thereby realizing the adjustment of the seat belt height. The controllable gas spring 3 is set along the height direction of the guide groove 11. Its sleeve 31 is fixed to the guide rail 1 by welding, fastener connection, etc. The end of the guide rod 32 is also fixed to the slider 2 by a reliable connection. The operating component 4 includes a housing 41, a switch 42, an elastic element 43 and a brake cable 44. The housing 41 is mounted on the outside of the slider 2 by a fastener. One end of the switch 42 is rotatably connected to the housing 41 by a rotating shaft. The elastic element 43 can be a spring and is installed between the handle of the switch 42 and the housing 41. The two ends of the brake cable 44 are fixed to the switch 42 and the needle valve 33 of the controllable gas spring 3 by buckles, fastening sleeves, etc. When switch 42 is operated, the needle valve 33 is pulled by the brake cable 44, controlling the extension and retraction of the controllable gas spring 3, thereby driving the slider 2 to move within the guide groove 11 to adjust the height of the seat belt. After adjustment, switch 42 is released, and under the action of the elastic element 43, switch 42 resets, the brake cable 44 no longer pulls the needle valve 33, and the controllable gas spring 3 remains in its current state, fixing the position of slider 2.

[0020] To improve sliding stability, refer to Figure 1The slider 2 has guide protrusions 22 on both sides, and guide grooves 12 on both sides of the guide groove 11 that cooperate with the guide protrusions 22. The guide protrusions 22 are slidably disposed in the guide grooves 12. During the manufacturing process, the guide protrusions 22 on both sides of the slider 2 are integrally formed with the slider 2 to ensure the connection strength between the two. The guide grooves 12 on both sides of the guide groove 11 are directly formed during the processing of the guide rail 1 to ensure that the dimensional accuracy of the guide grooves 12 and the guide protrusions 22 are matched. The guide protrusions 22 are embedded in the guide grooves 12. When the slider 2 slides along the guide groove 11, the guide protrusions 22 slide in the guide grooves 12, restricting the horizontal movement of the slider 2, so that the slider 2 can only slide along the height direction of the guide groove 11, improving the stability and guidance of the slider 2's sliding, avoiding the slider 2 from deviating or shaking during the sliding process, and ensuring the accuracy of the seat belt height adjustment.

[0021] To prevent slider 2 from detaching from guide groove 11 during sliding, refer to Figure 1 Both ends of the guide groove 11 are equipped with buffer bumpers 13 for limiting and buffering the slider 2. The buffer bumpers 13 are made of materials with elastic buffering properties such as rubber or elastic plastic. When the slider 2 slides to the extreme positions at both ends in the guide groove 11, the slider 2 will contact the buffer bumpers 13. The elastic deformation of the buffer bumpers 13 can absorb the impact force of the slider 2, limit the slider 2, reduce the rigid collision between the slider 2 and the guide rail 1, reduce the noise generated by the collision, protect the slider 2 and the guide rail 1, and extend the service life of the entire seat belt height adjustment mechanism.

[0022] The housing 41 has gripping portions 411 on both sides. The gripping portions 411 are integrally formed with the housing 41 and are designed in an arc or wave shape or other shape that is easy to grip. The surface can be provided with anti-slip texture to increase friction. When the driver or passenger adjusts the seat belt height, they can conveniently operate the switch 42 through the gripping portions 411, making the operation more comfortable and effortless, thereby improving the convenience of operation and user experience.

[0023] Furthermore, the switch 42 is located on one or both sides of the housing 41, and the rotation direction of the switch 42 for opening and closing is perpendicular to the gripping direction of the gripper 411. When the switch 42 is located on one side of the housing 41, it is installed in a position convenient for the driver or passenger to operate, such as near the inside of the door. The switch 42 is connected to the housing 41 via a rotating shaft, which is perpendicular to the gripping direction of the gripper 411. During operation, the driver or passenger grips the gripper 411 and uses their fingers to toggle the switch 42, causing it to rotate around the rotating shaft, thereby opening and closing the switch 42 and controlling the controllable gas spring 3. When the switch 42 is located on both sides of the housing 41, it can meet the operating habits of different drivers or passengers. Whether the driver or passenger uses their left or right fingers to operate, they can easily toggle the switch 42. This design makes the operation more ergonomic and improves the convenience and comfort of operation.

[0024] The seat belt mounting section 21 includes a mounting hole 211 and a reinforcing rib 212. When installing the seat belt, the seat belt is passed through the mounting hole 211. The reinforcing rib 212 can effectively disperse the tension of the seat belt on the area around the mounting hole 211 during use, preventing the mounting hole 211 from deforming or being damaged due to excessive force, improving the load-bearing capacity and structural strength of the seat belt mounting section 21, and ensuring that the seat belt can be reliably fixed on the slider 2 during vehicle operation, thus protecting the safety of the driver and passengers.

[0025] To ensure the stability and reliability of the operating component 4, a locking block 23 is provided on the slider 2. The locking block 23 has a groove that matches the brake cable 44, and the brake cable 44 is embedded in the groove. During the operation of the brake cable 44, the locking block 23 limits and guides the brake cable 44, preventing the brake cable 44 from shaking or deviating on the surface of the guide rail 1 and the slider 2. This ensures that the brake cable 44 can accurately transmit the operating force of the switch 42 to the needle valve 33 of the controllable gas spring 3, and ensures that the seat belt height adjustment mechanism can operate normally.

[0026] The choice of materials for slider 2 and guide rail 1 depends on actual needs and usage scenarios, and can be either high-strength plastic or metal. If high-strength plastic is used, engineering plastics such as polycarbonate (PC) and nylon (PA), which possess high strength, high toughness, and good wear resistance, can be selected. These can be injection molded to meet the mechanical performance requirements of slider 2 and guide rail 1 during use, while also offering advantages such as light weight and low cost. If metal is used, aluminum alloy and stainless steel can be selected, manufactured through casting or machining processes. Aluminum alloy is lightweight, high-strength, and corrosion-resistant, while stainless steel offers high strength and high corrosion resistance. By selecting appropriate materials for slider 2 and guide rail 1, sufficient strength and stability can be ensured, guaranteeing the reliable operation of the seat belt height adjustment mechanism during vehicle operation and protecting the safety of passengers.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A seatbelt height adjustment mechanism, characterized in that, The system includes a guide rail (1), a slider (2), a controllable gas spring (3), and an operating assembly (4). The guide rail (1) is fixed to the side of the vehicle body and has a guide groove (11) extending along the height direction. The slider (2) is slidably disposed in the guide groove (11) and has a seat belt mounting part (21). The controllable gas spring (3) is disposed along the height direction of the guide groove (11), and the sleeve (31) of the controllable gas spring (3) is fixedly connected to the guide rail (1). The end of the guide rod (32) is... The operating component (4) is fixedly connected to the slider (2); the operating component (4) includes a housing (41), a switch (42), an elastic element (43) and a brake line (44). The housing (41) is fixed to the outside of the slider (2). One end of the switch (42) is rotatably connected to the housing (41). The elastic element (43) is disposed between the handle of the switch (42) and the housing (41). The two ends of the brake line (44) are fixedly connected to the switch (42) and the needle valve (33) of the controllable gas spring (3), respectively.

2. The seat belt height adjustment mechanism as described in claim 1, characterized in that, The slider (2) has guide protrusions (22) on both sides, and the guide groove (11) has guide grooves (12) on both sides that cooperate with the guide protrusions (22). The guide protrusions (22) are slidably disposed in the guide grooves (12).

3. The seat belt height adjustment mechanism as described in claim 1, characterized in that, Both ends of the guide groove (11) are provided with buffer bumps (13) for limiting and buffering the slider (2).

4. The seat belt height adjustment mechanism as described in claim 1, characterized in that, The housing (41) has gripping parts (411) on both sides.

5. The seat belt height adjustment mechanism as described in claim 4, characterized in that, The switch (42) is disposed on one or both sides of the housing (41), and the rotation direction of the opening and closing operation of the switch (42) is perpendicular to the gripping direction of the gripping part (411).

6. The seat belt height adjustment mechanism as described in claim 1, characterized in that, The seat belt mounting part (21) includes a mounting hole (211) and a reinforcing rib (212). The mounting hole (211) is used to pass through the seat belt, and the reinforcing rib (212) is arranged around the mounting hole (211) to enhance the strength of the mounting part.

7. The seat belt height adjustment mechanism as described in claim 1, characterized in that, The slider (2) is provided with a locking block (23) for limiting and guiding the gate line (44).

8. The seat belt height adjustment mechanism as described in claim 1, characterized in that, The slider (2) and guide rail (1) are made of high-strength plastic or metal materials.

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