KR100208203B1 - Impact absorbing device composed in buckle of seat belt - Google Patents

Abstract

The present invention substantially alleviates the instantaneous impact applied to the occupant during a collision or sudden stop of the vehicle, and prevents injuries of the occupant due to the impact. Accordingly, a buckle is coupled to the tongue for guiding the withdrawal of the seat belt webbing, one end of which is supported by the retractor to lock the seat belt webbing, and a cushioning means connected between the buckle and the bracket fixed to the vehicle body. In the seat belt shock absorber of the vehicle, the cushioning means includes a case 11 fixed to the bracket, a ball 15 protruding toward the center of the case by a spring 13, and the unevenness of contact with the ball. Part 23 is widened toward the rear is formed in a substantially conical shape is characterized by consisting of a concave-convex plate 21 connected to the buckle and a body.

Description

Car seat belt buffer

1 is a partial perspective view showing a seat belt equipped with a shock absorber of a typical vehicle.

2 is a cross-sectional view showing a conventional seat belt shock absorber.

3 is a sectional view showing the main parts of a seat belt buffer of a vehicle according to the present invention;

* Explanation of symbols for main parts of the drawings

11: case 13: spring

15: ball 21: buffer member

23: uneven portion

The present invention relates to a seat belt shock absorber of an automobile, and more particularly, to a shock absorber of a seat belt that can mitigate the instantaneous impact during a collision or sudden stop of a vehicle.

In general, the seat belt of the vehicle is provided to promote the safety of the occupant during a collision or sudden stop of the vehicle, and is installed in the front and rear seats, respectively.

The seat belt is a retractor that is elastically supported in one direction by winding the seat belt webbing, guide anchors and tongues for guiding the extraction of the seat belt webbings released from the retractor, and are coupled to the tongues of the seat belts. Consists of a buckle to limit mounting and removal.

The retractor is fixed to the lower side of the seat, the guide anchor is fixed to the vertically above the retractor. The tongue is fixed to the middle one side of the seat belt webbing, and the buckle is fixed to the other bottom of the seat. In addition, the other end of the seat belt webbing is fixed to the opposite side of the buckle of the seat, and when the passenger pulls the seat belt and inserts the tongue into the buckle, the upper seat belt webbing through the guide anchor is It is worn over the shoulders and the seatbelt webbing in the lower part is worn over the belly of the occupant, and the belt is worn.

In a general seat belt having such a structure, the structure of a conventional seat belt having a shock absorber is shown in FIG. 1 and FIG. 2 in order to reduce the instantaneous impact generated during a collision or sudden stop of a vehicle. 2 is a cross-sectional view of the shock absorber shown in FIG.

As can be seen from the figure, the seat belt webbing 1 is guided by the tongue 3 and is worn to wrap the occupant's body as the tongue 3 is locked to the buckle 5. In addition, a buffer device 9 is provided between the buckle 5 and the bracket 7 fixed to the vehicle body. Here, the shock absorber is in contact with the case 11 fixed to the bracket 7, the ball 15 protruding toward the center of the case 11 by a spring 13, and the ball 15. It is supported by the buckle 5 and is composed of a concave-convex plate 17 connected to one body.

However, in the conventional seat belt shock absorber having the above structure, the support force of the elastic ball 15 and the concave-convex plate 17 is weak, there is a problem that the effect is substantially insignificant in the collision of the vehicle. Specifically, both side surfaces of the uneven plate 17 in contact with and friction with the elastic ball 15 are formed horizontally, so that the instantaneous impact force generated when the vehicle collides is weak.

The present invention has been made in view of the problems of the prior art, the present invention substantially reduces the instantaneous impact on the occupant during a crash or a sudden stop of the vehicle, thereby preventing the injuries of the occupant in advance It is an object to provide a seat belt buffer.

According to the above object, the present invention is a retractor that is elastically supported in one direction by winding the seat belt webbing, guide anchors and tongues for guiding the withdrawal of the seat belt webbing released from the retractor, and coupled with the tongue And a buckle for locking the seat belt webbing to be worn on the occupant's body, and a cushioning means interposed between the buckle and a bracket fixed to the vehicle body, wherein the cushioning means is fixed to the bracket. A case, a ball projecting toward the center of the case by a spring, and a concave-convex portion contacting the ball is widened toward the rear to form a substantially conical shape, and comprises a concave-convex plate connected to the buckle and a body We propose a seat belt shock absorber of a vehicle.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

3 is a partial cutaway sectional view showing the seat belt shock absorber of the vehicle according to the present embodiment. In this embodiment, the same reference numerals are given to the same parts as those in FIG. 2 cited in the prior art, and will not be described again in order to avoid duplication of description.

In the drawings, reference numeral 19 denotes a connection member which has not been described in the prior art, which connects the bracket 7 and the case 11 constituting the outer structure of the buffer means to one body. In addition, the buffer means is connected between the buckle (5) and the bracket (7) fixed to the vehicle body as described in the prior art.

Here, the present embodiment is to instantaneous impact due to the collision of the vehicle between the buckle (9) and the bracket (11) fixed to the vehicle body for the purpose of improving the slight buffering effect of the shock absorber which was a problem in the prior art. The shock absorber is provided with different frictional force at the beginning and the end of the.

More specifically, the buffer means according to the present embodiment, the case 11 is fixed to the connecting member 19, the ball 15 protruding toward the center of the case 11 by the spring 13 and the One end is connected to the buckle (5) and the contact surface is in contact with the ball 15 is composed of a buffer member 21 is formed wider toward the rear.

Here, the shock absorbing member 21 is formed so as to be substantially conical in the rear, so as to gradually increase the frictional force with the ball 15 toward the rear. In addition, the shock absorbing member 21 may be formed as a concave-convex plate which is provided with a concave-convex portion 23 extending in a conical shape, as can be seen through the drawing of the present embodiment.

According to the above-described configuration, the cushioning member 21 according to the present embodiment is to mitigate the impact by the contact force with the ball 15 having elastic force when the occupant is bounced forward by the collision or sudden stop of the vehicle. Since the buffer member 21 is formed to be wider toward the rear, it can be seen that the shock absorbing effect is increased than the conventional shock absorber. In addition, according to the present embodiment, since the concave-convex portion 23 formed in a substantially conical shape is supported step by step by the ball 15, the shock absorbing effect can be further enhanced.

Through the embodiments described above, the seat belt buffer of the vehicle according to the present invention substantially solves the problems of the prior art. That is, according to the present invention, by reducing the momentary impact applied to the occupant during a vehicle crash or a sudden stop by the friction force between the ball and the cushioning member which is gradually increased, the shock absorbing effect is improved, resulting in injury of the occupant Will be prevented.

The present invention has been illustrated and described above with respect to certain preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention belongs without departing from the gist of the invention as claimed in the claims. Anyone with ordinary knowledge in the field will be able to make various changes.

Claims (2)

A buckle for locking the seat belt webbing with one end supported by the retractor to lock the seat belt webbing to be worn on the occupant's body, and a cushioning means connected between the buckle and the bracket fixed to the vehicle body. In the seat belt shock absorber of the vehicle comprising a, the cushioning means is a case fixed to the bracket, the ball protruding toward the center of the case by a spring, the buckle and the contact surface connected to the body and abuts the ball Seat belt shock absorber of the vehicle, characterized in that the buffer member formed wider toward the rear. 2. The seat belt shock absorber of claim 1, wherein the shock absorbing member is made of a concave-convex plate having a concave-convex portion extending in a conical shape.