A seat belt limiting structure

Abstract

This utility model provides a seat belt limiting structure, belonging to the field of seat belt technology. It includes a mounting frame and a limiting unit mounted thereon. The limiting unit includes a groove on the mounting frame, with a limiting slider slidably connected within the groove. The seat belt, mounted on the mounting frame, passes through the groove and extends to the outside. A limiting component for limiting the limiting slider is also provided within the groove. The limiting component includes guide grooves symmetrically arranged at both ends of the limiting slider, with ratchet blocks slidably connected within each guide groove. Both ends of the groove have ratchet plates that engage with adjacent ratchet blocks on the same side. A spring is symmetrically distributed between each ratchet block and its corresponding guide groove. This utility model, through its limiting unit, prevents the seat belt from pulling outwards further when a car is involved in an accident and the occupants are thrown forward due to inertia, thus providing better protection for the occupants.

Description

Technical Field

[0001] This utility model belongs to the field of seat belt technology, specifically relating to a limiting structure for seat belts. Background Technology

[0002] Car seat belts are key devices that protect the lives of drivers and passengers. They play a crucial role in the moment of a vehicle collision. When a collision occurs, the car body will stop moving abruptly due to the impact force. However, due to inertia, the passengers inside the car will continue to move forward. This powerful inertial force may not only cause the passengers to violently collide with the car's interior components, but may even break through the windshield and be thrown out of the car, resulting in extremely serious injuries or fatalities.

[0003] Currently, car seat belts can effectively absorb some of the impact force at the moment of collision, while preventing passengers from violently colliding with the rapidly deploying airbags, thereby reducing injuries. However, existing seat belt devices still have limitations. When an accident occurs, passengers tend to lean forward due to inertia, which can easily cause the seat belt to stretch excessively, failing to provide stable restraint and protection for passengers, and making it difficult to meet the growing demands for driving safety. Utility Model Content

[0004] In view of this, the present invention provides a seat belt limiting structure, which can prevent the seat belt from moving through the limiting unit. When a car is involved in an accident and the occupants are thrown forward due to inertia, the seat belt is less likely to continue to be pulled outward, thus providing better protection for the occupants.

[0005] To solve the above-mentioned technical problems, this utility model provides a seat belt limiting structure, including a mounting frame and a limiting unit disposed thereon. The limiting unit includes a groove disposed on the mounting frame, and a limiting slider is slidably connected in the groove. The seat belt disposed on the mounting frame passes through the groove and the lower end of the limiting slider and extends to the outside. The groove is also provided with a limiting component for limiting the limiting slider, that is, preventing the seat belt from moving. When a car is involved in an accident, the seat belt is not easily pulled outward due to inertia and the occupants are thrown forward, thus providing better protection for the occupants.

[0006] The limiting component includes guide grooves symmetrically arranged at both ends of the limiting slider. Each guide groove is slidably connected with a ratchet block. Both ends of the groove opening are provided with ratchet plates, which are movably engaged with the adjacent ratchet blocks on the same side. Each ratchet block and its guide groove is provided with a spring symmetrically distributed vertically. The limiting slider is also provided with a drive component for synchronously unlocking the ratchet blocks, which serves as a limiting and locking function.

[0007] The drive assembly includes a limiting groove on the limiting slider, a lever plate slidably connected in the limiting groove, and pull ropes at both ends of the lever plate. The pull ropes are fixedly connected to the adjacent ratchet blocks on the same side. The two ends of the limiting groove are connected to the adjacent guide grooves on the same side, which facilitates unlocking by relevant operators.

[0008] The drive assembly also includes a second spring disposed between the dial plate and its corresponding limiting groove, which provides elastic force.

[0009] Guide rollers are rotatably connected at both ends of the connection point between the two ends of the limiting groove and the adjacent guide groove on the same side.

[0010] The longitudinal section of the lever is cross-shaped, which can prevent external dust and other debris from entering the limiting groove.

[0011] The lower end of the limit slider is equipped with a shim, which increases the coefficient of friction between the limit slider and the seat belt.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. Pull the limit slider down. During the downward movement of the limit slider, the ratchet blocks in the guide grooves at both ends are squeezed by the ratchet plates at both ends of the groove opening, overcoming the elastic force of the first spring and constantly avoiding it and sliding in the guide groove. When the limit slider moves down to the point where the pad at its lower end contacts the seat belt, the seat belt is limited. At this time, the ratchet blocks are reset under the action of the first spring and engage with the corresponding ratchet plates to lock the limit slider and prevent the seat belt from moving. When the car is involved in an accident, the seat belt is not easy to continue to pull outward due to inertia. It can provide better protection for the occupants.

[0014] 2. When the seat belt needs to be adjusted, move the lever downwards. The lever slides in the limiting groove against the elastic force of spring two. At the same time, the pull rope guided by the guide roller pulls the ratchet blocks on both sides, so that they overcome the elastic force of spring one and disengage from the ratchet plate, thus releasing the limit. After the operation is completed, the lever returns to its original position under the action of spring two, making it easy to limit the next time.

[0015] 3. The gasket increases the coefficient of friction between the limit slider and the seat belt, while preventing damage to the seat belt. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a seat belt limiting structure according to the present invention;

[0017] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is an enlarged structural diagram of section B of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 100, mounting bracket; 200, slide opening; 201, limit slider; 202, guide groove; 203, ratchet block; 204, ratchet plate; 205, spring one; 300, limit groove; 301, lever plate; 302, pull rope; 303, spring two; 400, guide roller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] This embodiment provides a seat belt limiting structure, such as Figure 1-4 As shown: It includes a mounting frame 100 and a limiting unit disposed thereon. The limiting unit includes a slide groove 200 disposed on the mounting frame 100. A limiting slider 201 is slidably connected in the slide groove 200. A safety belt disposed on the mounting frame 100 passes through the slide groove 200 and the lower end of the limiting slider 201 and extends to the outside. A limiting component for limiting the limiting slider 201 is also provided in the slide groove 200. The limiting component includes guide grooves 202 symmetrically disposed at both ends of the limiting slider 201. A ratchet block 203 is slidably connected in each guide groove 202. A ratchet plate 204 is provided at both ends of the slide groove 200. The ratchet plate 204 is movably engaged with the adjacent ratchet block 203 on the same side. A spring 205 is symmetrically distributed between the ratchet block 203 and its corresponding guide groove 202. A drive component for synchronously unlocking the ratchet block 203 is also provided on the limiting slider 201.

[0023] When the limiting slider 201 is pulled down, the ratchet blocks 203 in the guide grooves 202 at both ends are squeezed by the ratchet plates 204 at both ends of the slide opening 200, and continuously avoid the elastic force of the spring 205 and slide in the guide groove 202. When the limiting slider 201 moves down to the point where the pad at its lower end contacts the seat belt, the seat belt is limited. At this time, the ratchet blocks 203 are reset under the action of the spring 205 and engage with the corresponding ratchet plates 204 to lock the limiting slider 201 and prevent the seat belt from moving. When the car is involved in an accident, the seat belt is not easy to continue to pull outward due to inertia. It can provide better protection for the people.

[0024] like Figure 1-4 As shown, the driving assembly includes a limiting groove 300 disposed on the limiting slider 201. A lever 301 is slidably connected in the limiting groove 300. Both ends of the lever 301 are provided with pull ropes 302. The pull ropes 302 are respectively fixedly connected to the adjacent ratchet blocks 203 on the same side. Both ends of the limiting groove 300 are respectively connected to the adjacent guide grooves 202 on the same side. The driving assembly also includes a spring 303 disposed between the lever 301 and the limiting groove 300. The longitudinal section of the lever 301 is cross-shaped.

[0025] When the seat belt needs to be adjusted, the lever 301 is moved downwards. The lever 301 slides in the limiting groove 300 against the elastic force of the second spring 303. At the same time, the pull rope 302 guided by the guide roller 400 pulls the ratchet blocks 203 on both sides, so that they overcome the elastic force of the first spring 205 and disengage from the ratchet plate 204, thus releasing the limit. After the operation is completed, the lever 301 is reset under the action of the second spring 303, which is convenient for the next limit.

[0026] like Figure 1-4 As shown, guide rollers 400 are rotatably connected to the lower ends of the connection points between the two ends of the limiting groove 300 and the adjacent guide groove 202 on the same side, which play a guiding role in the movement of the pull rope 302.

[0027] like Figure 1-4 As shown, a gasket is provided at the lower end of the limiting slider 201 to increase the friction coefficient between the limiting slider 201 and the seat belt, while preventing damage to the seat belt.

[0028] The working principle of the seat belt limiting structure provided by this utility model is as follows: When the limiting slider 201 is pulled down, during the downward movement of the limiting slider 201, the ratchet blocks 203 in the guide grooves 202 at both ends are squeezed by the ratchet plates 204 at both ends of the slide opening 200, overcoming the elastic force of the spring 205 and continuously avoiding it, sliding within the guide grooves 202. When the limiting slider 201 moves down until the pad at its lower end contacts the seat belt, the seat belt is limited. At this time, the ratchet blocks 203 are reset under the action of the spring 205 and engage with the corresponding ratchet plates 204, completing the limiting of the limiting slider 201. The seat belt is locked to prevent it from moving. When a car is involved in an accident, the seat belt is not easily pulled outward due to the inertia of the occupants, thus providing better protection for the occupants. When the seat belt needs to be adjusted, the lever 301 is pushed down. The lever 301 slides in the limiting groove 300, overcoming the elastic force of the second spring 303. At the same time, the pull rope 302, guided by the guide roller 400, pulls the ratchet blocks 203 on both sides, so that they overcome the elastic force of the first spring 205 and disengage from the ratchet plate 204, releasing the limit. After the operation is completed, the lever 301 is reset under the action of the second spring 303, making it easy to limit the next time.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A seatbelt limiting structure, characterized in that: The device includes a mounting bracket (100) and a limiting unit disposed thereon. The limiting unit includes a groove (200) disposed on the mounting bracket (100). A limiting slider (201) is slidably connected in the groove (200). A safety belt disposed on the mounting bracket (100) passes between the groove (200) and the lower end of the limiting slider (201) and extends to the outside. The groove (200) is also provided with a limiting component for limiting the limiting slider (201).

2. The belt positioner according to claim 1, wherein: The limiting component includes guide grooves (202) symmetrically arranged at both ends of the limiting slider (201). Each guide groove (202) is slidably connected with a ratchet block (203). Both ends of the slide opening (200) are provided with ratchet plates (204). Each ratchet plate (204) is movably engaged with the adjacent ratchet block (203) on the same side. Each ratchet block (203) and its corresponding guide groove (202) are provided with springs (205) symmetrically distributed vertically. The limiting slider (201) is also provided with a drive component for synchronously unlocking the ratchet block (203).

3. The belt positioner according to claim 2, wherein: The driving component includes a limiting groove (300) disposed on the limiting slider (201), a lever (301) slidably connected in the limiting groove (300), and pull ropes (302) provided at both ends of the lever (301). The pull ropes (302) are fixedly connected to the adjacent ratchet blocks (203) on the same side, and the two ends of the limiting groove (300) are connected to the adjacent guide grooves (202) on the same side.

4. The belt positioner according to claim 3, wherein: The drive assembly also includes a second spring (303) disposed between the dial plate (301) and its corresponding limiting groove (300).

5. The belt positioner according to claim 3, wherein: Guide rollers (400) are rotatably connected at both ends of the connection point between the two ends of the limiting groove (300) and the adjacent guide groove (202) on the same side.

6. The belt positioner according to claim 3, wherein: The longitudinal section of the dial plate (301) is cross-shaped.

7. The belt positioner according to claim 1, wherein: The lower end of the limiting slider (201) is provided with a gasket.

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