JPS6340690B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a folding vehicle seat used in automobiles and the like.

2. Description of the Related Art Conventional folding seats for vehicles include those shown in FIGS. 1 and 2, for example.

In the figure, reference numeral 1 denotes a vehicle body, and a door 2 is provided on the side of the central portion of the vehicle body 1. A folding seat 3, which is a center seat, is attached within the vehicle body 1 at a position near the door 2. 4 is a front seat, and 5 is a rear seat.

The folding seat 3 can be folded when a person gets on and off from the door 2 and when loading and unloading luggage, and is composed of a seat cushion 6 and a seat back 7.

Seat sliders 9 having leg upper brackets 8 at their front ends are attached to both sides of the bottom surface of the seat cushion 6.
is connected to a lower leg bracket 11 attached to the vehicle body floor 10 by a hinge pin 12, and a seat cushion 6 is rotatably attached to the vehicle body floor 10. A seat bag 7 is rotatably attached to the rear portion of the seat cushion 6 via a hinge 13.

An angle member 1 having an L-shaped cross section is a connecting member in the width direction between the seat sliders 9, which are attached to both sides of the bottom surface of the seat cushion 6.
4, and both sheet sliders 9, 9 are reinforced to maintain flatness. Reference numeral 15 is a hook attached to one sheet slider 9, 16 is a striker that engages with the hook 15,
It is attached to the vehicle body floor 10 via a support stand 17.

Other conventional folding seats for vehicles include those that use a flat plate as the angle member 14, and those that do not use the angle member 14.

However, in a conventional folding seat in which the angle member 14 is not used, there is no reinforcement for both sheet sliders 9, 9da, so it is weak against twisting, and the degree of reinforcement for both seat sliders 9, 9 is insufficient, and the folding sheet 3 When folding the seat sliders 9, it becomes difficult to maintain the flatness of both sheet sliders 9, 9, so it becomes difficult to smoothly disengage the hook 15 that is engaged with the striker 16, and the angle member 14 becomes difficult to disengage smoothly. Even if a seat cushion 6 is used, the rotation of the seat cushion 6 is performed only by the hinge pin 12 connecting the upper leg and lower leg brackets 8, 11. Therefore, when a torsional force is applied to the upper leg bracket 8,
In the end, it interfered with rotation and was a functional problem.

In addition, since the leg upper bracket 8 has a U-shaped cross section that opens on the side where the hinge pin 12 is attached, the strength on the open end side is low, and in order to obtain the specified strength, a relatively thick member is required. There was also the problem that it needed to be used and was heavy.

This invention has been made by focusing on such conventional problems, and includes installing seat sliders extending in the vehicle longitudinal direction on both sides in the vehicle width direction of the bottom surface of the seat cushion to which the seat bag is foldably connected. At the front ends of these seat sliders, upper leg brackets each having a U-shaped cross section are attached from the inner and outer walls in the vehicle width direction and the bottom wall joined to the seat slider. Rotatably connected to two lower leg brackets fixed to the vehicle floor via a rotation shaft, and connected and fixed between the outer walls of the two upper leg brackets by a first connecting member in the vehicle width direction;
It is an object of the present invention to solve the above-mentioned problems by joining each inner wall to a first connecting member and connecting and fixing both seat sliders at the rear thereof by a second connecting member in the vehicle width direction.

The present invention will be explained below based on the drawings.

FIGS. 3 and 4 are diagrams showing an embodiment of the present invention. In the drawings, parts or members that are the same or equivalent to those of the conventional example are given the same reference numerals and redundant explanations will be omitted.

A cushion frame 6a is provided inside the bottom surface of the seat cushion 6, and seat sliders 9 are attached to both sides of the cushion frame 6a.

The seat slider 9 has an upper rail 9a fixed to the cushion frame 6a with bolts 18,
It consists of a lower rail 9a that is slidably engaged with an upper rail 9a, and a leg upper bracket 8 is welded and fixed to the front end of the lower rail 9b.
The upper leg bracket 8 includes an inner wall 8a and an outer wall 8b in the vehicle width direction, and a lower rail 9b of the slide rail 9.
It is formed into a U-shaped cross section from the bottom wall 8c joined to the bottom wall 8c, and is rotatably connected to the upper part of the lower leg bracket 11 attached to the vehicle body floor 10 via a hinge pin 12 as a rotation axis. There is. With this, the seat cushion 6 is attached to the vehicle body floor 10.
It is said that it can rotate freely.

The rear end of the lower rail 9b of the seat slider 9 located on the passenger side is supported by a bumper rubber 21 provided on the upper surface of a bracket 20 fixed to the inclined surface of the wheel house 19 located higher than the vehicle floor 10. . On the other hand, the rear end of the lower rail 9b of the seat slider 9 located on the opposite side to the getting-on/off side is connected to a support stand 17 installed on the vehicle body floor 10.
It is supported by a bumper rubber 21 provided at.
A striker 16 is provided on the support stand 17. In addition, a hook 1 that can be freely locked with the striker 16 is provided.
5 is rotatably attached to the lower rail 9b of the seat slider 9 via an L-shaped bracket 22, and is constantly biased by a spring 23 in the rotational direction in which it engages with the striker 16. Further, the hook 15 is provided with a hook 15 so as to release the engagement with the striker 16 when the seat bag 7 is folded forward.
An interlocking wire 24 that rotates 5 is connected.

Further, on the outer wall 8b of the two upper leg brackets 8, a pipe 25 with a circular cross section is provided as a first connecting member.
The ends of the pipe 25 are welded, and each inner wall 8a is also welded to the pipe 25. With such a configuration, it is possible to reinforce the vicinity of the hinge pin 12, which is subjected to the most force during rotation, and the pipe 25 is joined at a total of four locations, two on each side: the inner and outer walls of the upper leg bracket. Therefore, the strength of the bond can be improved.

In addition, the inner and outer walls 8a and 8b of the upper leg bracket 8
A closed cross section is formed by connecting the
The strength of the upper leg bracket 8 itself can also be increased.

On the other hand, the lower rail 9b of both seat sliders 9
are connected and fixed at their rear ends by a pipe 25' serving as a second connecting member in the vehicle width direction.

Note that 26 is a wire for locking the upper rail 9a sliding on the lower rail 9b, and 27 is an operating lever for operating the wire 26.

Next, the action will be explained.

When getting into the rear seat 5, first fold the seat back 7 forward, then hold the pipe 25' that connects the rear ends of the lower rails 9b with your hand and lift the rear part of the seat cushion 6 and tilt it forward. Then, the seat cushion 6 and the seat back 7 rotate together about the hinge pin 12 and are folded. At this time, since the pipe 25 has a circular cross section, the seat cushion 6 can be lifted without hurting the hands, and the pipe 25 is resistant to twisting.
Since the lower rails 9b are connected and sufficiently reinforced, the seat cushion 6 can be rotated while maintaining the flatness of both sliders 9, and the hook 15 that is engaged with the striker 16 can be rotated. The release operation is also performed smoothly as the seat cushion 6 rotates.

Furthermore, when the folding seat is set in use and the seat cushion 6 is slid, the rear ends of the lower rail 9b of the slider 9 and the upper leg brackets 8, 8 fixed to the front end of the lower rail 9b are connected to each other. Since they are connected and sufficiently reinforced by circular pipes 25 that are resistant to torsion, the flatness of both sliders 9 is maintained, the upper rail 9a moves smoothly with respect to the lower rail 9b, and the seat cushion 6 slides. The pipe 25 as a connecting member disposed between the upper leg brackets 8 can effectively eliminate twisting of the upper leg brackets 8, so that rotation by the hinge pin 12 is not hindered. In addition, in this embodiment, the connecting member includes a pipe 25.
Since this is used, it is effective in terms of strength, and even if the pipe 25 is held and operated when lifting the seat cushion 6, it will not hurt the hands.

As explained above, according to the present invention, the first
Since the connecting member connects both the inner and outer walls of the upper leg bracket, the strength of the connection can be increased, and the linearity of the rotation axis can be maintained even when the seat cushion is rotated to fold. It can be maintained and rotated smoothly.

Further, since a closed cross section is formed by connecting the inner and outer walls of the upper leg bracket, the strength of the upper leg bracket itself can be increased, and the weight can be reduced while maintaining that strength.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a vehicle body incorporating a conventional folding seat for a vehicle, Fig. 2 is a partially omitted perspective view showing the same folding seat in a folded state, and Fig. 3 is a part of the vehicle body according to the present invention. FIG. 4 is a perspective view showing the vehicle folding seat according to the embodiment in a folded state, and FIG. 4 is a partial sectional view showing the folding seat in a state in which the seat back is folded forward. 6...Seat cushion, 7...Seat back, 8...Leg upper bracket, 9...Seat slider, 10...Vehicle body floor, 11...Leg lower bracket, 25...Pipe (connection member).

Claims (1)

[Claims] 1 Seat sliders extending in the longitudinal direction of the vehicle are attached to both sides in the vehicle width direction of the bottom surface of the seat cushion to which the seat bag is foldably connected, and the inner and outer walls in the vehicle width direction and the seat sliders are attached to the front end of the seat slider, respectively. A leg upper bracket having a U-shaped cross section is attached to the bottom wall joined to the bottom wall, and the leg upper bracket is attached to two leg lower brackets each fixed to the vehicle floor via a rotation axis in the vehicle width direction. The two seat sliders are rotatably connected, and the outer walls of the two leg upper brackets are connected and fixed by a first connecting member in the vehicle width direction, and each of the inner walls is joined to the first connecting member. A folding seat for a vehicle, characterized in that the folding seat is connected and fixed at the rear portion thereof by a second connecting member in the vehicle width direction.