KR20010026879A - Seat belt load limitor of automatic using plastic deformation - Google Patents

Abstract

PURPOSE: A vehicle seatbelt load limiter with a plastic deformation is provided to reduce damage on a body caused by an impact applying to a webbing through extending the length of the webbing in a crash accident. CONSTITUTION: A vehicle seatbelt load limiter using plastic deformation comprises a vehicle body(200); a body(10) installing an anchor(110) separated from the vehicle body; a plastic deformation body(20) vertically mounted in the body; and a bracket supporting an end of the plastic deformation body by being fixed to the vehicle body. The body is separated from the vehicle body according to the anchor pulled by an impact in an accident. Then, the plastic deformation body is transformed to change an entire length of a webbing(100).

Description

Seat belt load limitor of automatic using plastic deformation

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt load limiter for automobiles using plastic deformation. More specifically, the end of an anchor mounted on a vehicle body may cause plastic deformation in the event of a collision / collision accident. The present invention relates to a seat belt load limiter for automobiles using plastic deformation.

In general, a vehicle is provided with a seat belt as a safety device that can increase the safety of the occupant including the driver in the event of a crash or crash, and mandatory to wear a seat belt.

As shown in the attached drawing 1, the seat belt has a retractor 300 having one end fixed to the vehicle body, and a webbing having the other end fixed to the vehicle body while being wound on the retractor 300 by elastic support. 100 and a buckle 120 which is fitted to the webbing 100 and is detachable to the anchor 110 fixed to the vehicle body.

In particular, the anchor 110 is a portion that accommodates and fixes the buckle 120 after adjusting the length of the webbing 100 to fit the body shape when the seat belt is worn. The buckle 120 is directly bolted to the vehicle body. If a collision / collision accident occurs because it is not arbitrarily solved, the passenger's body is restrained.

However, the existing seat belt prevents the webbing from suddenly releasing from the recliner when an accident occurs with the buckle attached to the anchor, preventing the occupant from being thrown out of the vehicle body. Webbing is often caused by the webbing of the chest, and the need for improvement.

The present invention has been made in view of this point, the anchor is fixed to the vehicle in the state fixed to the vehicle anchoring / separating the buckle causes a plastic deformation at the moment the impact is transmitted due to the collision / collision accidents, according to the webbing By increasing the overall length instantaneously, the occupant's inertia pushes forward and at the same time the webbing's length is increased, thereby reducing the degree of personal injury caused by the impact on the webbing. The purpose is to provide a seat belt load limiter.

The present invention for achieving this object is the body is fixed to the vehicle body and the other end is anchored separated from the vehicle body is mounted, the plastic deformation body is installed in the longitudinal direction inside the body causing plastic deformation, and the It consists of a bracket that is fixed to the vehicle body so as to be located at the other end and fixedly supports one end of the plastic deformation body, so that the plastic deformation body deforms as the body is separated from the vehicle body as the anchor is pulled by the impact when an impact / collision occurs It is configured to be able to change the overall length of the.

1 is a perspective view showing a state in which a conventional seat belt is mounted,

2 is a perspective view showing a load limiter of a seat belt according to the present invention;

3 is a side sectional view showing a load limiter of a seat belt according to the present invention;

4A and 4B are cross-sectional views showing a state before and after the operation of the seat belt according to the present invention.

[Description of Symbols for Main Parts of Drawing]

10: body 11: space part

12: guide hole 20: plastic deformation

21: fixing means 22: fastening portion

23: fixing hole 30: bracket

100: webbing 110: anchor

120: buckle 200: body

300: retractor

This will be described in more detail with reference to the accompanying drawings.

2 is a perspective view showing a load limiter of the seat belt according to the present invention, reference numeral 100 denotes a webbing and 110 denotes an anchor.

The present invention is to reduce the degree of injury to the occupant by the seat belt when the anchor 110 that restrains the webbing (100) is instantaneously increased when the impact is applied due to a collision or collision accident occurs .

The seat belt load limiter for automobiles according to the present invention for realizing this is fixed to the vehicle body 200 and the body 10 to which the webbing 110 separated from the vehicle body 200 is fixed at the other end, and the body 10. ) And a plastic deformation body 20 provided therein, and a bracket 30 for fixing the plastic deformation body 20 to the vehicle body 200.

The body 10 is formed in the shape of a rod member having a predetermined length so that the anchor 110 is integrally fixed to one side thereof, and the space portion 11 is formed in parallel to the longitudinal direction therein so that the plastic deformation body 20 is formed. ) Will be inserted.

In particular, the body 10 is formed on one surface through the guide hole 12 to communicate with the space portion 11 along the longitudinal direction, the guide hole 12 is fixed to the plastic deformation body 20 The fixing means 21 is inserted and installed.

The body 10 formed as described above is fixed to the vehicle body 200 at which the other end of the anchor 110 is not mounted. In this case, the vehicle body 200 is preferably fixed to rivets. When the anchor 110 is impacted, the fixed body 10 absorbs the shock primarily while the rivet fixing part is removed.

That is, since one end of the body 10 is riveted to the vehicle body 200 and the other end of the anchor 110 is integrally bolted to the body 10, the webbing is mounted in the state where the buckle 120 is mounted on the anchor 110. When an impact is applied to 100), the rivet fixing part is destroyed by the impact force, thereby absorbing part of the impact.

In a preferred embodiment of the present invention, the body 10 is preferably used to be manufactured to be separated / combined in two up and down to facilitate the installation of the plastic deformation body 20 with the formation of the space portion (11). Do.

The plastic deformation body 20 is produced by using a mild steel material so that the S-shape is repeatedly formed, the plastic deformation body 20 is produced to a size that can be inserted into the space (11). do.

In particular, the plastic deformation body 20 is integrally formed with a fastening portion 22 in a square shape at one end, and a fixing hole 23 for fixing the plastic deformation body 20 to the bracket 30 at the center of the fastening portion. This is molded through.

The plastic deformation body 20 formed as described above is inserted into the space 11, and the fastening part 22 is installed to face the other end of the body 10 on which the anchor 110 is mounted. In this case, the fixing hole 23 is fastened to the fixing means 21 in a state where the fixing hole 23 overlaps the guide hole 12.

Here, the fixing means 21 serves as a guide pin with a fastening function with a kind of bolts, and as described above, the fixing means 21 inserted in the state where the fixing hole 23 and the guide hole 12 overlap with each other is provided. As shown in the accompanying drawing 3, it is fixed by fastening from the inner surface of the bracket 30.

Accordingly, the plastic deformation body 20 is bolted to the bracket 30 fixed to the vehicle body 200 in the state in which the plastic deformation body 20 is installed, and thus the plastic deformation body 20 is mounted as described above. The body 10 is separated from the vehicle body 200 to absorb plastic shock as the plastic deformation as the movement in the longitudinal direction, and at the same time prevent the body 10 from going out more than the deformed length. .

That is, since the body 10 is riveted to one side of the vehicle body 200 and the other end is indirectly fixed to the vehicle body 200 by the plastic deformation body 20, the body 10 will move when the rivet is cut. The anchor 110 is the same as pulling the body 10 in the longitudinal direction, wherein the plastic deformation body 20 is one end is fixed to the vehicle body 200, plastic deformation by the body 10 This happens, and at the same time the body 10 is moved only as long as the plastic deformation body 20 is deformed, and as a result, the anchor 110 also extends by its length with the body 10 in its original position.

The bracket 30 is a bracket for supporting the plastic deformable body 20 to be fixed to the vehicle body 200. In particular, the bracket 30 may be molded to have a surface spaced apart from the vehicle body 200 at a predetermined interval.

This spaced apart is to ensure a space for fastening the fixing means 21 in fixing the plastic deformation body 20 to the bracket 30 as described above.

Accordingly, the anchor 110 presses the body 10 when the impact is applied to the webbing 100 due to a collision / collision accident, and thus the body 10 is a riveting part fixed to the vehicle body 200. As it moves apart in the longitudinal direction, along with the plastic deformation 20 will cause deformation.

As described above, the present invention is provided by separating the anchor from the vehicle body and mounted on the other end of the body riveted to the vehicle body, and having a plastic deformation body inside the body to cause plastic deformation as the body moves in the longitudinal direction, The impact allows the body to move away from the body, resulting in an increase in the length of the webbing.

Claims (4)

One end is fixed to the vehicle body and the other end is fixed to the vehicle body to be anchored separated from the vehicle body, the plastic deformation body is installed in the longitudinal direction inside the body causing plastic deformation, and located on the other end side of the body And a bracket for fixedly supporting one end of the plastic deformation body, wherein the plastic deformation body deforms as the body is separated from the vehicle body. According to claim 1, wherein the body has a space between the interior is formed so as to embed the plastic deformation, and the one side in contact with the bracket guide holes in the longitudinal direction to move the fixing means for fixing the plastic deformation Car seat belt load limiter, characterized in that the incision. 2. The seat belt load limiter for automobile according to claim 1, wherein the body is configured such that the first end of the body is riveted to the vehicle body and separated when the impact is applied due to a collision / collision accident. The seat belt load limiter for automobile according to claim 1, wherein the plastic deformation body is formed by repeatedly forming an S shape using a mild steel material.