KR19980029834A - Shock alleviation structure of vehicle seat belt - Google Patents

Abstract

The present invention relates to a shock-absorbing structure of a seat belt for a vehicle, so that the webbing 20 is wound around the retractor 27 and the webbing 20 drawn out of the retractor 27 to be withdrawn from the upper part of the cabin. A slip anchor 23, a mini-anchor 25 to secure the end of the webbing 20 via the slip anchor 23 to the vehicle body, and a buckle of the seat belt, which is movable in the webbing 20. In the seat belt of a vehicle including a tongue plate 21 fastened to the (22), a fastener for folding a webbing 20 at a predetermined length from the mini-anchor 25 by a predetermined length and fixing the folded state ( 10) is to fasten. Therefore, the fixture 10, which fixed the folded webbing 20 by the impact applied to the webbing 20 during the frontal collision of the vehicle, is separated, thereby loosening the webbing that surrounds the lower abdomen of the occupant and the lower body of the occupant. Is moved forward so that the head of the occupant is prevented from colliding with the vehicle body to be able to be folded forward, thereby improving safety.

Description

Shock alleviation structure of vehicle seat belt

The present invention relates to an impact mitigating structure of a seat belt for a vehicle, and more particularly, in order to prevent injuries caused by collision of the head of the occupant with the instrument panel of the vehicle during a frontal collision of the vehicle, the impact on the webbing of the seat belt can be alleviated. It relates to a shock-absorbing structure of a vehicle seat belt having a structure.

In general, the seat belt of the vehicle is to secure the lower abdomen and the chest of the occupant in the vehicle to the seat, and is a device for reducing the secondary flow state generated by the impact force applied to the vehicle body during the vehicle crash.

In the conventional seat belt, as shown in FIG. 4, both ends of the webbing 20 of the belt chain are fixed to the vehicle body, one end of which is wound on a retractor 27, and the other end of which is a mini-anchor. The body of the occupant is fixed to the seat by fastening the tongue plate 21 fixed to the vehicle body and movable to a predetermined portion of the webbing 20 to the buckle 22 fixed to the vehicle body. .

That is, the webbing 20 is not pulled out from the retractor 27 more than a certain amount of impact applied to the vehicle body, thereby preventing the occupant from jumping out of the seat 30.

However, the conventional seat belt structure is configured to instantaneously fix the occupant's body in the event of a frontal collision of the vehicle, but the webbing 20 for fixing the body fixes the occupant's chest and lower abdomen, so that the head is not fixed. There was no choice but to flow, and there was a problem that the front seat could collide with the instrument panel of the vehicle. In order to prevent this, the elongation of the webbing is controlled, but it is not a very active alternative.

The present invention has been made in view of the problems of the conventional seat belt as described above, and an object of the present invention is to reduce the injuries of the head of the occupant seated on the seat during the impact caused by the collision of the vehicle To provide a shock mitigation structure.

1 is a perspective view showing an application state of the present invention,

2 is an enlarged view of a portion A of FIG. 1;

3 is a cross-sectional view of part B of FIG.

Figure 4 is a perspective view illustrating a conventional seat belt.

(Explanation of symbols for the main parts of the drawing)

10; Fixture 11; Fitting

11a; Projection 12; Storage

12a; Groove 20; Webbing

21; Tongue plate 22; buckle

23; Slip anchor 25; Mini Anchor

27; Retractor

In order to achieve the above object, the present invention provides a retractor 27 in which a webbing 20 is wound, and a slip anchor to be withdrawn from the upper part of the vehicle room via the webbing 20 drawn from the retractor 27. (23), a mini-anchor (25) allowing the end of the webbing (20) via the slip anchor (23) to be fixed to the vehicle body, and a buckle (22) of the seat belt, which is fitted and movable in the webbing (20). In the seat belt of the vehicle comprising a tongue plate 21 fastened to the, the fastener 10 for folding a webbing 20 at a predetermined length from the mini-anchor 25 by a predetermined length and fixing the folded state. It provides a shock-absorbing structure of the seat belt for a vehicle, characterized in that the fastening.

Such a shock-absorbing structure of the vehicle seat belt according to the present invention, when the impact such as the frontal collision of the vehicle is applied, the folded webbing is released while moving the lower body of the rider forward a predetermined distance injuries caused by the rider's head leaned forward Can be prevented.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same parts as in the related art will be described with the same reference numerals.

1 is a perspective view showing the structure of the present invention, Figure 2 is an enlarged view of portion A of Figure 1, folding the webbing 20 on the upper end of a predetermined length from the mini-anchor 25, the folded webbing 20 is fixed to the fixture ( 10) is shown in a fixed state.

FIG. 3 is an enlarged view of a portion B in FIG. 2 and shows a state in which the fastener 10 is coupled to the webbing 20. That is, the through hole 28 is formed in the webbing 20 and the fixture 10 is combined. The fastener 10 is composed of a fitting portion 11 and the receiving portion 12 corresponding to the fitting portion 11, the fitting portion 11 to form a projection (11a) similar to the thread on the outer periphery of the lower end, the number It is preferable to form a recess 12a in the lead portion 12 so as to correspond to the protrusion 11a of the fitting portion 11 to be mutually coupled.

In addition, the fitting portion 11 and the receiving portion 12 is in a state in which it is good to be separated when a predetermined load is applied, the separation load of the fitting portion 11 and the receiving portion 12 is 100 ~ 300kgf It is desirable to.

The operation of the embodiment of the present invention formed as described above will be described.

When the collision of the vehicle occurs, the withdrawal of the webbing 20 is stopped due to the original function of the seat belt, which causes the seat belt to fix the rider's body. At this time, the fixture 10 which fixed the folded webbing 20 of the present invention is separated by the tension applied to the webbing 20 at an instant, and the webbing that has been folded as the fixture 10 is separated is unfolded and The webbing surrounding the lower abdomen becomes loose and the lower body of the rider moves forward. Therefore, the forward movement force of the occupant's head is relatively reduced to reduce the injuries caused by collision with the instrument panel in the case of the vehicle body, for example, the front seat.

As described above, the present invention prevents the pulling out of the webbing during the frontal collision of the vehicle so that the fixture 10 which fixes the folded webbing 20 by the tension force applied to the webbing 20 is separated, thereby causing the rider's The webbing that wrapped around the lower abdomen becomes loose and the lower part of the rider's body moves forward, so that the rider's head does not move forward to prevent the rider's head from colliding with the vehicle body. It is effective in improving safety.

Claims (3)

A retractor 27 on which the webbing 20 is wound, a slip anchor 23 for allowing the webbing 20 withdrawn from the retractor 27 to be withdrawn from the upper part of the vehicle compartment, and the slip anchor 23. Including a mini-anchor 25 for fixing the end of the webbing 20 via the vehicle body, and the tongue plate 21 is movable to fit the webbing 20 and fastened to the buckle 22 of the seat belt. In the seat belt of the configured vehicle, Folding the webbing (20) of a predetermined portion from the mini-anchor (25) by a predetermined length, the shock-absorbing structure of a vehicle seat belt, characterized in that the fastener (10) for fixing the folded state is configured. The shock absorbing structure of claim 1, wherein the fastener 10 has a separating load such that the fitting portion 11 and the receiving portion 12 are coupled to be separated when a predetermined load is applied. . 3. The shock-absorbing structure of a vehicle seat belt according to claim 2, wherein the separating load of the fitting portion (11) and the receiving portion (12) is 100 to 300 kgf.