JPH036014B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a restraint device for a seat of a vehicle or the like.

2. Description of the Related Art Vehicles, such as automobiles, are equipped with seatbelt restraint devices to ensure the safety of occupants in the event of an impact such as a collision.

Conventionally, the belt retractor of this type of restraint system was attached to the vehicle body, so when the occupant adjusts the seat position while restrained, the belt attachment posture changes, so each time the seat position is adjusted, It is necessary to adjust the length of the seat belt, and if the total length of the seat belt increases, the seat belt itself stretches, causing a reduction in the restraint performance of the seated person in the event of a collision. For this reason, various proposals have been made in which a belt retractor is attached to the seat side, that is, within the cushion frame, so that the restraint state of the seat belt does not change even if the occupant adjusts the seat position while the passenger is restrained.

However, when installing the belt retractor inside the cushion frame, if it is placed on the lower side of the seat or on the lower side facing the seat belt input part, the belt retractor will come into contact with the underside of the seat pad that forms the seat. Otherwise, the seatbelt crosses the underside of the seatbelt and comes into contact with the cushion frame, giving a feeling of discomfort when seated, and also interfering with the operation of the seatbelt.Furthermore, the seatbelt itself comes into direct contact with the cushion frame. dirty or
There is a risk of damage, and since it is necessary to provide a hole in the cushion frame for the seat belt to pass through, the strength of the cushion frame will be impaired, so it must be reinforced, and the cushion frame itself will be damaged. There are disadvantages such as increased weight. Furthermore, during assembly work, after the belt retractor is fixed to the cushion frame, the seat belt must be guided outside through the insertion hole formed on the side of the cushion frame. The disadvantage is that it is difficult to insert the buckle, and the work is time-consuming.

The present invention has been made in view of these points, and a belt retractor is attached to the outer surface of the cushion frame to prevent the seat belt from becoming dirty or damaged by the cushion frame, and to reduce the strength of the cushion frame itself. This provides a restraint device that will not cause any problems.

That is, in the present invention, a recess is formed in the front frame part of the cushion frame, a belt retractor is fitted and fixed in this recess, and a belt guide is installed in the rear part of the frame part on one side that extends from the angle where the recess is provided. The seat belt is arranged so that the seat belt led out from the belt retractor is passed along the outer surface of the above-mentioned one side frame portion, passed through the belt guide, and folded back above the seat cushion.

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

1 and 2 show a first embodiment of the present invention. In FIG. 1, 1 indicates the entire vehicle seat, 2 is a seat back, and 3 is a seat cushion. A recess 4 is provided at one corner of the front side 3a of the belt 3, and a belt retractor 5 is fitted and fixed into this recess 4.
A belt guide 6 is attached to the rear part of one side surface 3b that is continuous from the corner with a It has been folded back.

Also, a belt retractor 5 is provided on the front side of the recess 4.
A resin cover 8 is fitted so as to hide it. FIG. 2 shows a cushion frame in this example. This cushion frame 11 is made of a steel material having a channel cross section and is formed into a quadrilateral shape. It is fixed between the tips of 11b and 11c. The recess 4 is formed by covering the skin except for one end, that is, the part corresponding to the recess 4. Further, an attachment hole 13 for the belt guide 6 is bored in the rear part of the one side portion 11b, located near the attachment portion of the free hinge bracket 12.
The belt retractor 5 is fitted into one end of the opening 11a' of the front member 11a, that is, the part corresponding to the recess 4, and fixed with a bolt 14. Moreover, the belt guide 6 is attached to the mounting hole 13 at the rear of the one side member 11b.
Attach with bolt 15. The belt retractor 5 and belt guide 6 are assembled after the seat cushion 3 is assembled. Finally, the resin cover 8 is fitted to cover the belt retractor 5.

FIG. 3 shows a modified example of the cushion frame 11, in which the front member 11a is made of a shaped steel with a channel cross section, similar to the cushion frame shown in FIG. Front member 11
It is formed by widening one end of the opening 11a' of the opening 11a', that is, the portion 11a corresponding to the recess 4, and is used when a large belt retractor 5 is attached. Incidentally, this wide opening 11a is the front member 1.
It can be formed not only at the ends of 1a but also at any arbitrary position such as the center, that is, the belt retractor attachment position. The belt retractor 5 and belt guide 6 are attached to the cushion frame 11 shown in FIG.
Since it is the same as that explained in the figure, repeated explanation will be omitted.

4 and 5 show a second embodiment of the present invention. In this embodiment, the belt retractor 5 is placed at an optimal position on the front surface of the seat cushion 3, that is, at an angle as in the first embodiment. It is designed to be attached to an appropriate position, such as the center, without being limited to the central part.

That is, in this example, a recess 4 is formed at an arbitrary position on the front surface of the seat cushion 3, a guide pin 9 is attached near one corner, and the seat belt 7 guided from the belt retractor 5 is pulled. The tension direction is changed at the guide pin (9) so that it is inserted through the belt guide 6. Also in this example, the belt retractor 5 is covered by a resin cover 8, but the seat cover 8 is formed to have a slightly longer side surface than the one shown in FIG. 1 so as to cover the guide pin 9. FIG. 5 shows the cushion frame 11 in this example, which is formed into a quadrilateral shape by using a steel material with a channel cross section, similar to the cushion frame 11 shown in FIG. 2, and the front member 11a has an opening 11a' facing forward. and is fixed between the tips of both side members 11b and 11c. Further, a bracket portion 10 for inserting the above-mentioned guide pin 9 is formed at the front end corner of the one side member 11b in this example, and a bracket portion 10 for attaching the belt guide 6 is formed at the rear of the one side member 11b. A hole 13 is bored.

The bracket 10 of the guide pin 9 may be formed integrally with the one side member 11b, but as shown in FIG. The bracket 10 may be integrally fixed to the corner of this member. Further, the front member may be formed according to the form shown in FIG.
Those forming a are suitable for this example. Furthermore, since the belt retractor 5 and belt guide 6 are attached in the same manner as described above, repeated explanation thereof will be omitted.

As described above, according to the present invention, the front member of the cushion frame having a quadrilateral shape is formed in a substantially U-shaped cross section opening forward, and has an opening, into which the belt retractor is fitted. The seat belt led out from the belt retractor is attached to the outer surface of one side member of the cushion frame, passes through the belt guide at the rear, and is folded back to the top of the seat cushion. The front member has flanges on the top and bottom, and the structure is similar to that of a commonly used four-sided cushion frame with the flange side facing forward, so there is no loss in strength. Moreover, no special parts are required for assembling the belt retractor, and the number of parts can be reduced and easily assembled using ordinary parts such as screws.

Since this belt retractor can be assembled from the outside after covering the cushion frame with the skin, it does not interfere with the display covering work, and the seat adjuster is attached to the cushion frame. Since the entire seat can be assembled efficiently in the same process as a seat where the belt retractor is not directly attached, it also has the advantage that it can be easily removed from other parts for repair and inspection after assembly. have Also,
Since the seat belt does not come into direct contact with the cushion frame, there is no risk of dirt or damage, and there is no need to provide a hole in the cushion frame for the seat belt to pass through, so its strength is not compromised and there is no need for complicated reinforcements. No additional configuration is required. Moreover, since the seatbelt is only moved along the outer circumference of the seat cushion, it does not impair riding comfort or interfere with the operation of the seatbelt, and it improves the restraint of the occupant. The effect is great.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a vehicle seat equipped with the device of the present invention, FIG. 2 is a perspective view showing the attachment relationship of a belt retractor and a belt guide to a cushion frame of the same seat, and FIGS. B is a perspective view of a modification of the cushion frame shown in FIG. 2 and an enlarged sectional view of a portion thereof, FIG. 4 is a perspective view of a cushion portion of another example of a vehicle seat equipped with the present invention, and FIG. 6 is a perspective view showing the attachment relationship of the belt retractor and belt guide to the cushion frame of the seat cushion, and FIG. 6 is a perspective view of a portion of another example of the cushion frame. In the figure, 1 is a seat, 3 is a seat cushion, 4 is a recess, 5 is a belt retractor, 6 is a belt guide, 7 is a seat belt, 11 is a cushion frame, 11a is a front member, and 11b is one side member. .

Claims (1)

[Scope of Claims] 1. The cushion frame is formed in a quadrilateral shape, the front member of the cushion frame is formed in a substantially U-shaped cross section opening forward, and has an opening, and the rear surface of the cushion frame has an opening. and both side members are formed in a substantially U-shaped cross section opening inward, a belt retractor is fitted and fixed to one end of the front opening of the front member, and one side member of the cushion frame A belt guide is disposed at the rear of the seat cushion, and the seat belt led out from the belt retractor is passed through the belt guide along the outer surface of one side member of the cushion frame, and is passed above the seat cushion. A restraint device for a seat of a vehicle, etc., characterized by being foldable.