Automobile safety belt frame
By designing components such as limiting shafts, roller sleeves, friction strips, and return springs, the problems of insufficient strength and excessive weight of existing automotive seat belt frame structures have been solved, enabling smooth sliding and tension adjustment of the seat belt, improving the user experience and contributing to vehicle lightweighting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING HONGGUANG AUTO ACCESSORIES CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-02
AI Technical Summary
The existing automotive seat belt frame structure is not strong enough, resulting in unstable seat belt fixation, easy jamming, affecting wearing comfort and convenience, and its weight is too large, which is not conducive to the lightweighting of automobiles.
The design incorporates components such as limit shafts, roller sleeves, friction strips, and return springs, combined with threaded fixing holes and weight-reducing mounting holes, to achieve smooth sliding and tension adjustment of the seat belt, thereby enhancing the strength of the frame structure and reducing weight.
It effectively prevents seat belt jamming, improves wearing convenience and comfort, while reducing overall weight, enhancing frame structure strength, and providing reliable safety protection.
Smart Images

Figure CN224311727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat belt frame technology, and in particular to an automotive seat belt frame. Background Technology
[0002] As a key supporting component of the seat belt system, the automotive seat belt frame plays a vital role in the safety of drivers and passengers. However, existing automotive seat belt frames, such as those described in patent publication number CN207790616U, have several shortcomings in practical applications. Some frames lack structural strength, making it difficult to effectively secure the seat belt during a collision and failing to provide reliable restraint protection for occupants. Other frames are poorly designed, causing the seat belt to easily jam or twist during use, affecting wearing comfort and convenience.
[0003] Traditional frames, like those in patent CN207790616U, often use a single metal material, resulting in significant weight. This hinders the development of lightweight vehicles and makes them prone to corrosion and fatigue fractures under complex operating conditions, increasing safety risks and failing to meet the ever-increasing demands for vehicle safety and performance. Utility Model Content
[0004] The purpose of this utility model is to provide a car seat belt frame that effectively avoids jamming, allows for adjustment of seat belt tightness, makes it more convenient for drivers and passengers to use, effectively reduces overall weight, contributes to the development of lightweight automobiles, and enhances the overall structural strength of the frame.
[0005] To achieve the above objectives, a car seat belt frame is provided, including a housing, a limiting shaft fixedly connected to the housing, a sliding groove on the housing, and a movable groove on the housing.
[0006] According to the aforementioned automotive seat belt frame, a limiting sleeve is movably connected within the movable slot, a seat belt sleeve is fixedly connected to the side of the limiting sleeve, and the seat belt sleeve is movably connected to the outer shell.
[0007] According to the aforementioned automotive seat belt frame, the outer shell has multiple threaded fixing holes and multiple symmetrical weight-reducing mounting holes.
[0008] According to the aforementioned automotive seat belt frame, the upper end of the outer shell is provided with symmetrical mounting grooves, and corresponding fixing strips are movably connected in the mounting grooves, and corresponding connecting strips are fixedly connected to the fixing strips.
[0009] According to the aforementioned automotive seat belt frame, a movably connected roller sleeve is fitted on the limiting shaft, and multiple friction strips are fixedly connected to the roller sleeve.
[0010] According to the aforementioned car seat belt frame, a symmetrical first roller groove is provided on the limiting shaft, and a symmetrical second roller groove is provided inside the roller sleeve. A plurality of ball rollers are movably connected between the first roller groove and the second roller groove.
[0011] According to the aforementioned automotive seat belt frame, a return spring is movably connected to the limiting shaft, a locking hole is provided on the side of the roller sleeve, and a second bending strip is fixedly connected to one end of the return spring, the second bending strip being movably connected to the locking hole.
[0012] According to the aforementioned automotive seat belt frame, the other end of the return spring is fixedly connected to a first bending strip, and a plurality of fixing strips are fixedly connected in the slide groove, the fixing strips being movably connected to the first bending strip.
[0013] Beneficial effects:
[0014] 1. The roller sleeve on the limiting shaft, in conjunction with the ball roller, makes the seat belt slide more smoothly and effectively avoids jamming; the friction strip increases the friction with the seat belt, preventing the seat belt from slipping and loosening. The return spring, in conjunction with other components, allows for adjustment of the seat belt tension, making it more convenient for drivers and passengers and significantly improving the user experience.
[0015] 2. The threaded mounting holes on the outer shell facilitate a secure connection to the vehicle body, ensuring the frame's installation stability. Symmetrically arranged weight-reducing mounting holes effectively reduce the overall weight without compromising frame strength, contributing to the lightweighting of automobiles. The design of mounting slots, fixing strips, and connecting strips enhances the overall structural strength of the frame, providing more reliable safety protection for occupants in the event of a collision.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a perspective view of a car seat belt frame proposed in this utility model;
[0019] Figure 2 This is a cross-sectional view of a car seat belt frame proposed in this utility model;
[0020] Figure 3 The present utility model proposes Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4This is a schematic diagram of the movable structure of a car seat belt frame proposed in this utility model.
[0022] Legend:
[0023] 1. Outer shell; 2. Roller sleeve; 3. Slide groove; 4. Movable groove; 5. Limiting sleeve; 6. Seat belt sleeve; 7. Threaded fixing hole; 8. Weight reduction mounting hole; 9. Mounting groove; 10. Fixing strip; 11. Connecting strip; 12. Limiting shaft; 13. First roller groove; 14. Second roller groove; 15. Ball roller; 16. First bending strip; 17. Fixing strip; 18. Return spring; 19. Second bending strip; 20. Clip hole; 21. Friction strip. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figures 1-4 This utility model provides a car seat belt frame, which includes a shell 1, a limiting shaft 12 fixedly connected to the shell 1, a sliding groove 3 and a movable groove 4, which provide space for the movement of the limiting sleeve 5.
[0026] Specifically: The movable slot 4 is movably connected to the limiting sleeve 5, and the side of the limiting sleeve 5 is fixedly connected to the safety belt sleeve 6. The safety belt sleeve 6 is movably connected to the outer shell 1 to ensure that the safety belt can move flexibly during use, while being constrained by the limiting sleeve 5.
[0027] Specifically: the outer casing 1 has multiple threaded fixing holes 7 and multiple symmetrical weight-reducing mounting holes 8, which reduce the overall weight through reasonable hole design.
[0028] Specifically: The upper end of the outer shell 1 is provided with symmetrical mounting grooves 9, and a corresponding movable connection of fixing strips 10 is provided in the mounting grooves 9. A corresponding fixed connection of connecting strips 11 is provided on the fixing strips 10 to enhance the overall structural strength and stability of the frame.
[0029] Specifically: A movable roller sleeve 2 is fitted on the limiting shaft 12, and multiple friction strips 21 are fixedly connected on the roller sleeve 2 to increase the friction between the roller sleeve and the seat belt and prevent the seat belt from sliding randomly.
[0030] Specifically: The limiting shaft 12 has a symmetrical first roller groove 13, and the roller sleeve 2 has a symmetrical second roller groove 14. Multiple ball rollers 15 are movably connected between the first roller groove 13 and the second roller groove 14 to reduce rolling friction, making the seat belt slide more smoothly and effectively avoiding jamming.
[0031] Specifically: a return spring 18 is movably connected to the limiting shaft 12, a retaining hole 20 is opened on the side of the roller sleeve 2, a second bending strip 19 is fixedly connected to one end of the return spring 18, the second bending strip 19 is movably connected to the retaining hole 20, and the second bending strip 19 is movably connected to the retaining hole 20 in an interference fit manner.
[0032] Specifically: The other end of the return spring 18 is fixedly connected to the first bending strip 16, and multiple fixed strips 17 are fixedly connected in the slide groove 3. The fixed strips 17 are movably connected to the first bending strip 16. Through the elastic force of the return spring 18, the position of the roller sleeve 2 is adjusted, thereby adjusting the tightness of the seat belt.
[0033] Working principle:
[0034] The outer shell 1 serves as the basic carrier, and is tightly connected to the car body using bolts through threaded fixing holes 7, ensuring the frame is securely installed inside the vehicle. Symmetrically arranged weight-reducing mounting holes 8 effectively reduce overall weight while maintaining frame strength, contributing to lightweight vehicle design. Regarding seatbelt installation and fixation, the limiting sleeve 5 can move flexibly within the movable groove 4, and its side seatbelt sleeve 6 is used to attach the seatbelt. This design allows the seatbelt to move flexibly during use while being constrained by the limiting sleeve 5, preventing excessive shaking or displacement of the seatbelt during vehicle operation. Simultaneously, the fixing strip 10 within the mounting groove 9 at the upper end of the outer shell 1 can slide and adjust its position. The connecting strip 11 on the fixing strip 10 can connect to other automotive components, further enhancing the overall structural strength and stability of the frame and providing reliable fixing support for the seatbelt. The limiting shaft 12 plays a crucial role in the sliding and adjustment of the seatbelt. The roller sleeve 2 is fitted onto the limiting shaft 12, and its outer surface friction strip 21 is made of a high-friction coefficient material, increasing the friction between the roller sleeve and the seatbelt and preventing the seatbelt from sliding freely. The ball roller 15, located between the first roller groove 13 on the limiting shaft 12 and the second roller groove 14 inside the roller sleeve 2, significantly reduces friction through rolling contact, making the seat belt slide more smoothly and preventing jamming, thus improving the convenience and comfort of the driver and passengers when using the seat belt. The return spring 18 plays a crucial role in adjusting the seat belt tension. The return spring 18 is sleeved on the limiting shaft 12, with its second bent strip 19 at one end connected to the locking hole 20 on the side of the roller sleeve 2 via an interference fit, and its first bent strip 16 at the other end engaging with the fixing strip 17 inside the slide groove 3. When the seat belt is pulled out, the roller sleeve 2 moves against the elastic force of the return spring 18, and the return spring 18 deforms. When the seat belt is loosened, the return spring 18 returns to its original position by elastic force, which drives the roller sleeve 2 to move, thereby adjusting the tightness of the seat belt and ensuring that the seat belt always fits the body of the driver and passengers. In the event of a vehicle collision, the seat belt can restrain and protect the driver and passengers in a timely and effective manner.
[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A car seatbelt frame, comprising a shell (1), characterized in that: A limiting shaft (12) is fixedly connected to the outer shell (1), a sliding groove (3) is provided on the outer shell (1), and a movable groove (4) is provided on the outer shell (1).
2. The automotive seatbelt frame according to claim 1, characterized in that, A limiting sleeve (5) is movably connected inside the movable groove (4). A safety belt sleeve (6) is fixedly connected to the side of the limiting sleeve (5). The safety belt sleeve (6) is movably connected to the outer shell (1).
3. The automotive seatbelt frame according to claim 1, characterized in that, The outer shell (1) has multiple threaded fixing holes (7) and multiple symmetrical weight-reducing mounting holes (8).
4. A car seatbelt frame according to claim 1, characterized in that, The upper end of the outer shell (1) is provided with symmetrical mounting grooves (9), and a fixing strip (10) is movably connected in the mounting groove (9), and a connecting strip (11) is fixedly connected on the fixing strip (10).
5. A car seatbelt frame according to claim 1, characterized in that, The limiting shaft (12) is fitted with a movably connected roller sleeve (2), and a plurality of friction strips (21) are fixedly connected to the roller sleeve (2).
6. A car seatbelt frame according to claim 5, characterized in that, The limiting shaft (12) has a symmetrical first roller groove (13), and the roller sleeve (2) has a symmetrical second roller groove (14). Multiple ball rollers (15) are movably connected between the first roller groove (13) and the second roller groove (14).
7. A car seatbelt frame according to claim 5, characterized in that, A return spring (18) is movably connected to the limiting shaft (12). A locking hole (20) is opened on the side of the roller sleeve (2). A second bending strip (19) is fixedly connected to one end of the return spring (18). The second bending strip (19) is movably connected to the locking hole (20).
8. A car seatbelt frame according to claim 7, characterized in that, The other end of the return spring (18) is fixedly connected to a first bending strip (16), and a plurality of fixed strips (17) are fixedly connected in the slide groove (3). The fixed strips (17) are movably connected to the first bending strip (16).