JPH0427700Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a bucket seat, and particularly to a bucket seat with a reclining device that can tilt forward and backward.

<<Prior Art>> In general, the front seats of two-door cars are configured to be able to be folded forward in order to make it easier for passengers to get in and out of the rear seats and to take luggage in and out.

For this reason, if the front seat is a bucket seat equipped with side support parts, when the front seat is folded forward, the side part on the seat back side will interfere with the side part on the seat cushion side, making it impossible to fold the front seat forward. As shown in the figure, most of the rear part 2a of the side part 2 on the side of the seat cushion is cut out, and its shape is formed to follow the shape of the opposite end part 4a of the back side part 4 which is folded forward. As a result, the seat bag 3 is tilted via the rotary support shaft 3a from the normal usage position shown by the solid line to the forward tilted position at an angle α shown by the two-dot chain line.

<<Problems to be solved by the invention>> By the way, in such a conventional bucket seat, as shown in FIG. The occupant 5 corresponds to the area divided by the side rear part 2a and the backside end 4a.
The butt portion 5a is no longer supported by the side portions 2 and 4. For this reason, this type of conventional bucket seat has not been able to sufficiently support the occupant's lateral movement, which is the original purpose of the bucket seat.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a bucket seat with a reclining device that provides sufficient lateral support to the occupant and can be tilted smoothly forward as needed.

<Means for Solving the Problems> In order to achieve this object, the bucket seat with a reclining device of the present invention has a side support portion divided into a side portion of the seat cushion and a side portion of the seat back, and The side portion is divided into a front fixed side portion and a rear movable side portion, and the movable side portion is rotated around the cushion frame so as to rotate together with the seat back side side portion following the reclining movement of the seat back. It is movably pivoted and
One end of the spring body is engaged with the cushion frame, and the other end of the spring body is engaged with the spring body so as to be biased toward the backside portion.

<<Operation>> Since the movable side portion moves following the back side portion, the seat back is smoothly tilted forward, and the movable side portion exerts a sufficient lateral support effect on the occupant.

<<Example>> Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a bucket sheet according to the present invention. Note that the same parts as in the above-mentioned embodiment are given the same reference numerals, and the explanation thereof will be omitted. In the figure, the side support part of the bucket seat is separated into a side part 2 of a seat cushion 1 and a side part 4 of a seat bag 3, and the cushion side part 2 is divided into a front fixed side part 6 and a rear side part 7. It is divided into The movable side portion 7 is formed into a substantially fan shape, and its latch portion is rotatably supported by a support shaft 8, and its arcuate portion 7a is opposed to the arcuate dividing surface 6a of the fixed side portion 6. The side surface 7b is in sliding contact with the end surface 4a of the backside portion 4.

Here, as shown in FIG.
The support shaft 8 is rotatably supported by a shaft support 8d, which is a stepped bolt fixed to the shaft, through a hole 8a, a washer 8b, and a nut 8c, respectively. Furthermore, a guide slot 10a formed in the frame 7a
A stopper pin 10 fixed to the cushion frame 1a is engaged with the locking hole 9c, and the tip of one end piece 9b of a torsion coil spring 9 wound around the support shaft 8 is engaged and locked with the locking hole 9c. The other end side 9a of the coil spring 9 is locked to a stopper pin 10,
The frame 7a is biased around the support shaft 8 in the clockwise direction indicated by the arrow. In addition, FIG. 3 shows another embodiment of the frame 7a, and in the figure, a guide groove 10b is integrally formed on the back surface of the frame 7a to protrude, and a stopper pin 10 is locked in this groove 10b. .

In such a configuration, in the normal usage position of the seat bag 3 shown by the solid line in FIG. The side surface 7b is in sliding contact with the back side end surface 4a, and the circular arc portion 7a
A part thereof faces the dividing surface 6a of the fixed side portion 6. In this state, the stopper pin 10 is located almost at the lower end of the guide slot 10a, and even if the seat bag 3 is tilted from this state to the rearward position shown by the two-dot chain line, the movable side part 7 does not rotate. .

Next, in Fig. 4B, the seat bag 3 is
When the movable side portion 7 is sequentially tilted forward as shown by the arrow from the normal usage position shown by the two-dot chain line, one side surface 7b of the movable side portion 7 is pressed into sliding contact with the back side end surface 4a as the seat back 3 is tilted. It is sequentially rotated via the support shaft 8. In any of the relaxing postures during this period, the lateral support effect of the seat is sufficiently ensured by the movable side portions 7 that are sequentially rotated. When the seat back 3 is in its most forward tilted position at an angle β shown by the solid line with its back side portion 4 in contact with the fixed side portion 6, the stopper pin 10 of the movable side portion 7 is located approximately at the upper end of the guide slot 10a. . In this way, the seat back 3 is smoothly tilted to the forward position.

Note that the forward tilting angle β is set to be sufficiently larger than the forward tilting angle α in the above-described embodiment, but this forward tilting angle β depends on the shape of each side portion 2, 4 and the rotation support shaft 3a of the seat back 3. By appropriately setting the position of , the seat back 3 can be set even larger, and the seat back 3 can be tilted forward until it is almost horizontal. Furthermore, when the seat back 3 is tilted rearward from such a state of being tilted forward, the movable side portion 7 is of course rotated following the back side end surface 4a due to the biasing force of the torsion coil spring 9. .

Note that the shape of the movable side portion 7 is not limited to the fan shape, and can be set to various shapes corresponding to the shapes of the fixed side portion 6 and the back side portion 4.

<<Effect of the invention>> As explained above, the bucket seat with a reclining device of the present invention divides the cushion side part into a front fixed side part and a rear movable side part, and the movable side part is Since the bucket seat is configured so that it can rotate following the back side portion, the bucket seat can be smoothly tilted to a sufficiently forward position. Therefore,
It is possible to completely eliminate the deterioration in the lateral support effect for the occupant, which has been a drawback of conventional bucket seats of this type.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the bucket seat according to the present invention, Fig. 2 is an exploded perspective view illustrating the rear movable side frame and its mounting structure in the present invention, and Fig. 3 is an exploded perspective view of the rear movable side frame of the present invention. A perspective view of the back of another embodiment, FIGS. 4A and 4B are schematic side views illustrating the rotational movement of the rear movable side part when reclining the bucket seat according to the present invention, and FIG. 5 is a conventional example of the bucket seat. 6 is a side view of the bucket seat shown in FIG. 5, and FIG. 7 is a side view of the bucket seat shown in FIG. 5 with an occupant seated on it. 2...Cushion side part, 4...Back side part, 6...Front fixed side part, 7...Rear movable side part, 7a...Frame, 8...Support shaft, 9
...Torsion coil spring, 10...Stopper pin, 1
0a... Guide slot, 10b... Guide groove.

Claims (1)

[Scope of utility model registration request] The side support part is divided into a side part of the seat cushion and a side part of the seat bag, and the cushion side part is divided into a front fixed side part and a rear movable side part, and the movable side part is divided into a side part of the seat bag. The spring body is rotatably supported on the cushion frame so as to rotate together with the side portions following the reclining movement of the seat back, and one end of the spring body is engaged with the other end of the spring body that is engaged with the cushion frame. A bucket seat with a reclining device that is stopped and biased toward the backside portion.