JPH01247243A - Passive belt shoulder adjusting mechanism - Google Patents

Abstract

PURPOSE:To make a shoulder adjuster small in breadth and thickness by attaching a slide rail on upper face of an adjust base having plural numbers of fitting holes, and making an anchor base fitted to the fitting holes movable on surrounding the slide rail. CONSTITUTION:An adjust base 11 having plural numbers of fitting holes 14 is attached to a center pillar member, and a slide rail 6 is attached on the upper face (inside a cabin) of the base. An anchor base 5 fitted to the fitting holes 14 of the adjust base 11 is made to pass through the slide rail 6 freely on inner face of the same and to be movable on surrounding the slide rail. A slider is made guidable to the slide rail 6, and in a case of collision, the load is received with the adjust base via the slider and the anchor base. According to three dimensional arrangement on the adjust base and the slide rail, breadth and thickness of a shoulder adjusting mechanism can be made in small.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a vehicle seat belt, and in particular to a passive belt that enables height adjustment of the seat belt shoulder of a passive seat belt device for an automobile. This relates to a shoulder adjustment mechanism.

<Prior Art> Seat belt devices for automobiles protect occupants by restraining them using webbing in the event of a vehicle emergency such as a collision, and the occupants are safely protected without colliding with a steering wheel or the like.

The sitting heights and physiques of occupants who wear seat belt devices vary, and for safety reasons, it is necessary to be able to adjust the mounting position of the anchor base that supports the webbing. This is because if the shoulder webbing anchor base is positioned too high, the webbing will hang on the occupant's face or neck, and if it is positioned too low, it will fall off the shoulders and wrap around the arms.In either case, the webbing cannot effectively protect the occupant in an emergency. This is because there is a possibility that it will not happen.

FIG. 11 is a diagram showing the overall configuration of a passive seat belt device equipped with a shoulder adjustment mechanism. The shoulder adjustment mechanism attaches webbing 1 to the shoulders of the occupant accurately according to the sitting height and physique of the occupant.
) 3, the anchor base 5 engages with the slider 4 at the restraining position, and the anchor base 5 is attached by a mechanism whose position can be adjusted in the vertical direction.

<Problem to be solved by the invention> In the conventional shoulder adjustment mechanism, an adjustment base was attached to a part of the center pillar of the vehicle body to transmit the load in the event of a collision, and a slide rail and an anchor base were attached to the front or rear of the adjustment base. Therefore, the width of the shoulder adjustment mechanism has become larger. Some of the center pillars of recent cars are thin, so a thinner and narrower shoulder adjustment mechanism is needed to accommodate that.

Therefore, an object of the present invention is to reduce the thickness and width of a shoulder adjustment mechanism.

Means for Solving the Problems> In order to achieve the above object, the present invention firstly provides the following:
We decided to adopt a structure in which the slide rail, anchor base, and adjustment base were layered, and secondly, we decided to wrap the slide rail with the anchor base so that the slide rail would receive the load.

<Function> When the load applied to the anchor base is received by the adjust base, the width of the shoulder adjust mechanism can be reduced by creating a two-story structure in which the anchor base surrounding the slide rail is stacked on the adjust base. can do.

When the load on the anchor base is received by the slide rail, the anchor base surrounds the slide rail, and the slide rail is directly fixed to the vehicle body to provide strength, so that the slide rail serves as both a guide member and a strength member. By adopting this structure, the shoulder adjustment mechanism can be made thinner.

<Example> Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a first embodiment of the present invention, showing a state in which an anchor base 5 is at the top. 2 and 3 are cross-sectional views thereof, with FIG. 2 showing the latched state and FIG. 3 showing the latched state.

FIG. 4 is an exploded perspective view of the first embodiment.

There is a T-shaped hook on the top of the adjustment base 11, which is inserted into a hole in the center pillar of the vehicle body and hooked onto it. The lower part of the adjustment base 11 is attached to a part of the center pillar of the vehicle body with bolts. The adjustment base 11 is for transmitting and supporting the load applied to the webbing 1 to the vehicle body at the time of a collision. The adjustment base 11 is provided with a plurality of locking holes 14. The latch 12 is inserted into one of the locking holes 14 to position the anchor base 5.

The anchor base 5 is attached on top of the adjustment base 11, and is guided along the adjustment base 11 or the slide rail 6 so that it can move up and down. The anchor base 5 has a slide rail 6
and engages with the slider 4 guided by the slide rail 6 at the occupant restraint position. The load applied to the slider 4 at the time of a collision is received by the azimuth I-base 11 via the anchor base 5.

By stacking the anchor base 5 and slide rail 6 on the adjustment base 11 to form a two-story structure, the width can be reduced.

5 and 6 are a plan view and a sectional view of a second embodiment of the present invention.

The adjustment base 11 has a plurality of locking holes 14 and is attached to the vehicle body with bolts at the top and bottom. anchor base 5
surrounds the slide rail 6. Slide rail 6
is directly attached to the vehicle body using a mounting bracket 22 to provide sufficient strength.

A resin spacer 15 is attached between the slide rail 6 and the anchor base 5 in order to reduce sliding noise when the anchor base 5 is moved and to smooth the movement. The spacer 15 is not shown in FIG.

FIG. 6 is a diagram showing the latch locked state of the anchor base 5, and when the knob 13 is pulled in the direction of arrow A, the latch 12
is removed from the adjustment base 11, and the latch is released. The anchor base 5 can be moved in the vertical direction in the unlatched state, and the position is adjusted according to the physique of the occupant, and the latch 12 is inserted into one of the locking holes 14 for positioning.

When a car collides, the slider 4 and the anchor base 5 engage, and the anchor base 5 receives the load applied to the webbing. Since the anchor base 5 surrounds the slide rail 6, the load is transmitted to the slide rail 6, and the load applied to the slide rail 6 is received by the vehicle body via the mounting bracket 22.

Since the slide rail 6 is made strong and serves both as a guide member and a strength member, the shoulder adjustment mechanism can be made thin and compact.

7 and 8 are a plan view and a sectional view of a third embodiment of the present invention.

In the third embodiment, as shown in FIG. 8, the lower part of the latch 12 is bent so that the bent portion of the latch 12 engages with the adjustment base 11, so that the adjustment base 11 also receives the load. When a large load is applied, the load is mainly received by the slide rail 6, but a part of the load is also received by the adjustment base 11. The structures of the adjustment base 11, slide rail 6, anchor base 5, etc. and their movements during position adjustment are the same as in the second embodiment.

By distributing the load in this way, the load applied to the slide rail 6 is reduced, the required strength is reduced, the slide rail 6 can be made smaller, and the entire shoulder adjustment mechanism can be made smaller. .

9 and 10 are a plan view and a sectional view of a fourth embodiment of the present invention.

In the fourth embodiment, as shown in FIG. 10, the end of the anchor base 5 is bent so as to be hooked onto the adjustment base 11. In the third embodiment, the latch 12 is used for hooking, but the anchor base 5 is used for hooking. The other configurations are the same as the third embodiment. Since the slide rail 6 and the adjustment base 11 receive the load in a distributed manner, the slide rail 6 can be made smaller, which is the same as in the third embodiment.

<Effects of the Invention> As described above, according to the present invention, a shoulder adjustment mechanism with a small width and a thin thickness can be realized. This makes it possible to easily equip a vehicle body with a narrow center pillar with a shoulder adjustment mechanism. Furthermore, by using the slide rail itself as a guide member of the anchor base and a member that receives the load, a compact shoulder adjustment mechanism with the thinnest thickness can be realized at low cost.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a first embodiment of the invention, FIGS. 2 and 3 are sectional views thereof, and FIG. 4 is an exploded perspective view thereof. FIG. 5 is a plan view of a second embodiment of the invention, and FIG. 6 is a sectional view thereof. FIG. 7 is a plan view of a third embodiment of the invention, and FIG. 8 is a sectional view thereof. FIG. 9 is a plan view of a fourth embodiment of the invention, and FIG. 10 is a sectional view thereof. FIG. 11 is a diagram showing the overall configuration of a passive seat belt device for an automobile. (Explanation of symbols) 1 ・・・・・・・・・・・・・・・・・・・・・
Webbing 3 ・・・・・・・・・
・・・・・・・・・・・・ E RB4 ・
···················· vinegar
Rider -5 ・・・・・・・・・・・・
・・・・・・・・・・・・Anchor base 6 ・・・・・・
・・・・・・・・・・・・・・・・Slide rail 10
·····················car
Body 11 ・・・・・・・・・・・・・・・・・・・・・
・Adjust base 12 ・・・・・・・・・・・・
・・・・・・・・・・・・ Lat
Chi13 ・・・・・・・・・・・・・・・
······ of
B14・・・・・・・・・・・・・・・・・・
Locking hole 15 ・・・・・・・・・・・・・・・
... Spacer 22 ・
・・・・・・・・・・・・・・・・・・・・・Mounting Bracket Patent Applicant NSK Ltd. Agent Patent Attorney Akira Sunakawa Figure 2, Figure 3, Figure 11

Claims (5)

[Claims] (1) Used in passive seat belt devices for vehicles; a slide rail that guides a slider to which occupant restraint webbing is connected; an adjustment base that has multiple locking holes; In the shoulder adjustment mechanism, the anchor base is movably guided by the adjustment base, and the latch is inserted into the locking hole of the adjustment base to lock and position the anchor base. A passive belt shoulder adjustment mechanism that can be attached to create a two-story structure. (2) The passive belt shoulder adjustment mechanism according to claim 1, wherein the adjustment base is hooked on the vehicle body at the upper side and attached to the vehicle body at the lower side with bolts. (3) A slide rail used in passive seat belt devices for vehicles that guides a slider connected to webbing for occupant restraint, an adjustment base having multiple locking holes, and a slide rail that surrounds the slide rail and extends along the adjustment base. In the shoulder adjustment mechanism, which includes an anchor base that is movably guided by the anchor base, and a latch that is inserted into the locking hole of the adjustment base to lock and position the anchor base, the load applied to the anchor base during a collision is reduced. A passive belt shoulder adjustment mechanism that is supported by a slide rail. (4) The lower part of the latch is bent so that in the event of a collision, the lower bent part of the latch engages with the adjustment base, so that the load is received at two places: the slide rail and the adjustment base. The passive belt shoulder adjustment mechanism according to claim (3). (5) The lower part of the anchor base is bent so that in the event of a collision, the lower bent part of the anchor base engages with the adjustment base, so that the load is received at two places: the slide rail and the adjustment base. Claims (
3) Passive belt shoulder adjustment mechanism described.