JP2561664Y2 - Vehicle seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat for a vehicle such as an automobile and a construction vehicle.

[0002]

2. Description of the Related Art One example of a conventional vehicle seat of this type is shown in FIG.
This is shown in FIG. In FIG. 4, 1 is a seat cushion, 2 is a seat back, and 3 is a headless train. A cross section along the line AA in FIG. 4 is shown in FIG.
In FIG. 5, 4 is a lower rail, 5 is an upper rail,
Reference numeral 6 denotes a bracket, and reference numeral 7 denotes a front-rear locking mechanism. The lower rails 4 are fixed to the floor of the vehicle body, and extend in parallel in the front-rear direction of the vehicle body at predetermined intervals. The upper rail 5 is supported by the lower rail 4 via rollers 8 and the like so as to be relatively movable with respect to the lower rail 4 along the front-rear direction of the vehicle body. At least the lower ends of brackets 6 are welded to the upper surfaces of the upper rail 5 at the front end and the rear end thereof.
Is fixed to the cushion pan 9 by screws 10 or the like. The front-rear locking mechanism 7 is fixed to the lower rail 4 and is rotatably supported on one side thereof by a rack plate 11 extending in parallel with a slight distance from the rack plate 11 and a bracket 12 fixed on one side of the upper rail 5. It comprises a rod 13 and a lock plate 14 fixed to the rod 13. Then, by operating a lever (not shown) connected to the front end of the rod 12, the rod 12 is rotated around its axis to engage the lock plate 14 with any one of the many racks of the rack plate 11. This locks the relative front and rear positions of the lower rail 4 and the upper rail 5.

[0003]

[Problem to be solved by the invention] Car collision (head-on collision)
At this time, a large inertia component acting on the occupant sitting on the vehicle seat is applied to the seat cushion 1. Then, in the conventional vehicle seat, as shown in FIG. 6, the bracket 6 falls down, the upper rail 5 and the lower rail 4 are deformed and the front / rear lock mechanism 7 is unlocked, and the seat cushion 1 is moved forward. There was a risk of moving to.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems, and its gist is that it is fixed to a vehicle body and is spaced apart from each other by a predetermined distance in the front-rear direction of the vehicle body. A pair of lower rails extending in parallel along
An upper rail supported by these lower rails and relatively moving along the front-rear direction of the vehicle body, a front-rear lock mechanism installed on a side of the lower rail for locking a front-rear position of the upper rail, and a bracket attached to the upper rail. A vehicle seat provided with a seat cushion fixed through the bracket, wherein the bracket has a weak point portion that can be bent in a direction orthogonal to the seat sliding direction.

[0005]

According to the present invention, since the above structure is provided, when an excessive load is applied to the seat cushion,
The bending of the bracket at its weak point in a direction orthogonal to the seat sliding direction prevents or suppresses deformation of the upper rail and the lower rail.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. As shown in FIG. 1, by forming a notch in the side wall of the bending portion of the bracket 6, the weak point portion 20 is formed near the mounting position of the seat cushion. The other configuration is the same as the conventional one shown in FIGS.

However, when an excessive load is applied to the seat cushion 1 at the time of a frontal collision of an automobile, the bracket 6 is locally bent at the weak point 20 as shown in FIG. Is prevented or suppressed from being transmitted to the upper rail 5 and the lower rail 4. Note that FIG.
As shown in FIG. 7, a weak point can be formed by providing a hole 21 and a stop 22 in the bracket 6.

[0008]

According to the present invention, the bracket is formed with a weak point that can be bent in a direction perpendicular to the seat sliding direction, so that when an excessive load is applied to the seat cushion, the bracket moves in the seat sliding direction at the weak point. Refracting in the direction perpendicular to the upper rail and the lower rail to prevent or suppress the falling. Thus, the unlocking of the front-rear lock mechanism can be prevented, so that the seat cushion can be prevented from moving back and forth unexpectedly, and the occupant's safety can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing one embodiment of the present invention.

FIG. 2 is a sectional view showing a deformed state of the embodiment.

FIG. 3 is a side view of a main part showing another embodiment of the present invention.

FIG. 4 is a perspective view of a conventional vehicle seat.

FIG. 5 is a partially enlarged sectional view taken along line AA of FIG. 4;

FIG. 6 is a cross-sectional view showing a deformed state of a conventional upper rail and lower rail.

[Explanation of symbols]

 4 Lower rail 5 Upper rail 6 Bracket 20 Weak point

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of lower rails fixed to a vehicle body and extending in parallel in the front-rear direction of the vehicle body at a predetermined interval from each other, and upper rails supported by the lower rails and relatively moved in the vehicle front-rear direction. When the front and rear locking mechanism for locking the longitudinal position of the installed the upper rail on the side of the lower rail, the vehicle seat having a seat cushion which is fixed via a bracket to the upper rail, the In the direction perpendicular to the seat slide direction on the bracket
A vehicular seat having a weak portion that can be bent .