JPH0213259Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automobile seat belt device that protects occupants by restraining them in the seat in the event of sudden braking or a collision.More specifically, this invention relates to an improved belt guide through which the seat belt is inserted. This relates to a seat belt device for an automobile to which the following is added.

2. Description of the Related Art Conventional automobile seat belt devices include those shown in FIGS. 1 to 3, for example.
(Refer to Utility Model Application Publication No. 51-142219).

In the figure, numeral 1 is the seat, and the seat cushion 1
a, and a seat back 1b which can be tilted freely by a reclining device 2, and the seat 1 is provided with a seat belt device 10.

This seat belt device 10 has a retractor 3 fixed to the vehicle body on one side of the seat 1 (here, between a door not shown and the seat 1), and a lap belt 4 (belt) wound around the retractor 3. For example, a tongue 6 is attached to one end, and this lap belt 4 is inserted through a belt guide 5.
Further, a buckle 7 into which a tongue 6 is fitted is fixed to the other side of the seat 1. The attachment positions of the tongue 6 and buckle 7 may be reversed. In the figure, 30 is a knee pad. As shown in FIG. 3, the belt guide 5 through which the lap belt 4 is inserted has a long hole 5a.
is partitioned by a partition portion 5b, and is attached to the cover 2a of the reclining device 2, which is a side portion of the seat 1. In normal times, the tongue 6 released from the buckle 7 is
As shown in the figure, the partition portion 5b of the belt guide 5
It is supported in a position where it can be easily grasped by the occupant. Further, when the seat belt device 10 is worn and receives an impact load such as a collision, the partition portion 5b is cut off by the force from the lap belt 4 as shown in FIG. As shown in the figure, the wrap belt 4 was pulled in a substantially straight line, a uniform load was applied to the entire width of the wrap belt 4, and the original tensile strength of the wrap belt 4 was maintained.

However, in such a conventional seat belt device 10, depending on the state in which the partition portion 5b of the belt guide 5 is cut, the lap belt 4 may be pinched and damaged by the sharp cut portion, and the seat belt device may be damaged. There was a risk of compromising the safety of 10.

This idea was created by focusing on these conventional problems, and it supports a tongue or buckle in a predetermined position in the long hole of the belt guide, which is released during normal times. By providing an automobile seat belt device that is provided with a partition portion that is cut from both ends with a thin wall or a notch under a predetermined load,
The purpose is to solve the above problems.

This invention will be explained below based on the drawings. The same reference numerals are given to parts and members that are the same as or equivalent to those in the prior art, and redundant explanations will be omitted.

4 to 6 are diagrams showing an embodiment of this invention.

First, the configuration will be explained. Seat belt device 20
is the wrap belt 4 wound around the retractor 3.
A tongue 6 is attached to the tip of the lap belt 4, and the wrap belt 4 is inserted through a belt guide 21 attached to a cover 2a on the side of the seat 1.

As shown in FIG. 6, the belt guide 21 is provided with an elongated hole 21a of a predetermined length so that the lap belt 4 is pulled in a substantially straight line in an emergency, and a partition portion 21b is provided in the elongated hole 21a. It is provided. This partition portion 21b is provided at a portion that supports the released tongue 6 in a position (predetermined position) that is easy for the occupant to grasp during normal times, and
Both end portions 21c are made thin so that in an emergency such as a collision, a predetermined load applied from the lap belt 4 causes the end portions 21c to be cut off from the boundary with the wall of the elongated hole 21a. Of course, it is sufficient to provide a notch even if the wall is not thin. Furthermore, the central portion 21d of the partition portion 21b is made thin enough to bend under the predetermined load but not to be cut.

Next, the action will be explained. When an occupant attempts to release the seatbelt device 20 from the buckle 7 during normal operation, the lap belt 4 is wound around the retractor 3. The wrap belt 4 comes into contact with the partition 21b, and the partition 21b moves the tongue 6 through the wrap belt 4 to a position where the occupant can easily grasp it (in this case, on the rear end side of the belt guide). Supported by

Furthermore, when the seat belt device 20 is worn and an impact load is applied to the occupant due to a collision or the like, the lap belt 4 will be stretched as the occupant moves, as shown by the two-dot chain line in FIG. The direction changes, and the lap belt 4 moves inside the elongated hole 21a as shown by arrow A in FIG.
direction and presses the partition portion 21b. The partition portion 21b receives a pressing force from the wrap belt 4 in the direction of arrow A (a large load that occurs only in an emergency such as a collision), is bent from the center portion 21d, and both ends 21c are cut off. As shown by the middle two-dot chain line, it falls out from the long hole 21a. The cut site does not leave sharp marks. As a result of this falling off, the lap belt 4 is not damaged at the cut site and is stretched in a substantially straight line with a uniform load over its entire width, thereby preventing the occupant from moving.

In addition, as shown in FIGS. 7 and 8, the partition portion 21b
Of course, only the both ends 21c may be made thinner.

As explained above, according to this idea,
The long hole in the belt guide supports the tongue or buckle, which is released in normal times, in a predetermined position.
Since the automobile seat belt device is provided with a partition section that is cut from both ends with a thin wall or a notch when a predetermined load is applied from the belt in an emergency, the tongue or buckle can be supported in a position where it can be easily grasped. In addition, in an emergency, both ends of the partition do not leave sharp cut points, do not damage the seat belt, do not cause uneven wrinkles on the belt, and always apply a uniform load across the entire width. Therefore, the operability of the seat belt device can be improved and safety can be maintained. The seat belt device can be used as is by replacing the belt guide with the missing partition.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing a conventional seat belt device, in which Figure 1 is a perspective view showing the seat belt device installed on a seat, and Figure 2 is an operation of the seat belt device. FIG. 3 is an enlarged sectional view taken along the - line in FIG. 2, and FIGS. FIG. 5 is a view similar to FIG. 2 showing the operation of the seat belt device, FIG. 6 is an enlarged cross-sectional view taken along the line - - of FIG. The figure shows a sectional view of a main part of another embodiment of the present invention. 1...Seat, 2a...Cover (side of seat), 3...Retractor, 4...Wrap belt (belt), 6...Tang, 7...Buckle, 20
... seat belt device, 21 ... belt guide,
21a...long hole, 21b...partition, 21c...
...Both ends.

Claims (1)

[Claims for Utility Model Registration] A seat belt that has a tongue or buckle at one end and is wound around a retractor at the other end is inserted into a long hole extending in the longitudinal direction of the vehicle in a belt guide provided on the side of the seat. and the length of the long hole is set so that the seat belt moves toward the front of the vehicle in the long hole and is pulled in a substantially straight line in the event of an emergency activation, wherein the belt guide includes: , a partition part that supports the released tongue or buckle in a predetermined position in the elongated hole during normal times, and is cut from both thin-walled or notched ends under a predetermined load applied from the belt in an emergency. An automobile seat belt device characterized by being provided with.