JPH08132939A - Vehicular multi-purpose seat - Google Patents

Abstract

PURPOSE: To provide a vehicular seat realizing both front facing and rear facing ways of sitting and having a high back and a short cushion. CONSTITUTION: A seat cushion 1 and a seat back 2 are supported around the center of hinges 5, 11 and reclining devices 4, 8 fixed to a seat leg 3. The rotational centers of the seat cushion 1 and seat back 2 are overlap-crossed in the respective rotating areas, and the length of a seat cushion 1 or seat back 2 in the horizontal state is shortened by the over-cross part W in relation to the height of the raised seat back 2 or seat cushion 1 in the seated state so as to enable sitting in both ways, facing front and rear. Also the back is high, and the cushion is short so as to form a seat corresponding to the relation between the long legs and upper half body of an occupant, thereby obtaining comfortable sitting effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipurpose seat for a vehicle, which enables an expanded usage form.

[0002]

2. Description of the Related Art Conventionally, in an automobile such as a one-box car or a railroad vehicle, in order to improve convenience for passengers, for example, a seat can be seated forward and backward. There is. FIG. 4 shows an example of this type of seat. The base body 30 is fixed in the vehicle compartment, and the seat cushion 10 and the seat back 20 are rotatable with respect to the base body 30 as shown by arrows A and B. Thus, the forward sitting posture and the backward sitting posture are obtained.

[0003]

However, the above-mentioned conventional ones are often adopted especially for one-box cars for passenger cars, railway cars, etc., but the seat cushion 10 and the seat back 10 are used to establish forward and backward seating. The longitudinal lengths of the seat cushions 20 and 20 are equal, and the centers of rotation of the seat cushion 10 and the seat back 20 are within their respective regions. As a result, in a normal seated state, as shown in FIG. 5, the seat cushion 10 at the seating portion is too long and the seat back 20 at the back-holding portion is too short, which makes the passenger uncomfortable to sit on. This is also the case when the user is seated backward. The present invention
In view of the above problems, it is an object of the present invention to provide a vehicle seat that can be seated forward and backward, and has a short cushion and a long back that is comfortable to sit on.

[0004]

Therefore, according to the present invention, in a seat provided in a passenger compartment and provided with a seat cushion and a seat back, the seat cushion and the seat back are respectively supported by a base body through a reclining device, The center of rotation of the reclining device of the seat cushion is installed in the turning area of the seat back, and the center of rotation of the reclining device of the seat back is installed in the turning area of the seat cushion so as to overlap each other. did.

[0005]

[Function] Since the seat cushion and the seat back are respectively supported by the base body through the reclining device, it is possible to easily realize the forward sitting posture, the backward sitting posture, or the flat state by independently adjusting the rotation. You can Since the center of rotation of the reclining device is over-crossed with respect to the seat cushion and the seat back, the seat cushion is shortened with respect to the seat back in the normal seated state. As a result, a seat that is comfortable to sit in is formed that corresponds to the relationship between the leg length of the occupant and the upper body.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention applied to automobiles such as passenger cars and freight cars, railway cars and the like. 1A is a top view of the sheet, and FIG. 1B is a sectional view of the sheet taken along the line AA of FIG. The seat cushion 1 is a center O of a reclining device 4 on the right side fixed to a seat leg 3 as a base body by a bolt (not shown) and a hinge 5 fixed to the seat leg 3 by welding or the like.
It is supported mainly by 2 and reclining device 4
The angle is adjusted and fixed by the operation of. The seat cushion 1 is composed of a seat pipe frame 6 passing through the bottom and a cushioning material 7 thereon. Like the basic seat cushion 1, the seat back 2 is composed of a seat pipe frame 9 passing through the bottom and a cushioning material 10, and a right leg reclining device 8 fixed to the seat leg 3.
And the center O of the hinge 11 fixed to the seat leg 3
It is supported around 1, and the angle is adjusted and fixed by operating the reclining device 8. The rotation centers O1 and O2 of the seat cushion 1 and the seat back 2 are overlapped with each other by W in the respective rotation regions of the respective counterparts, so that the seating posture can be a frontward sitting posture and a rearward sitting posture in the rotation region.

Next, an example of use of the seat of this embodiment having the above structure will be described. First, when the seat cushion 1 and the seat back 2 shown in FIG. 1 are in a horizontal state, the seat pipe frames 6 and 9 in the seat cushion 1 and the seat back 2 are connected to the ends d and e of the seat leg 3.
Then, the force of pushing the seat downward is applied to the center O of the reclining devices 4, 8 and the hinges 5, 11.
1, O2 and the ends d and e of the seat leg 3 are supported by two spans L and S, so that the seat cushion 1 and the seat back 2 are connected to each other to maintain a horizontal bed state.

In the normal sitting posture, as shown in FIG. 2, the seat cushion 1 is in the forward seated state (a).
Is horizontal and the center O is the same as in the above bed.
2 and the end portion d of the seat leg. The seat back 2 is raised around the rotation center O1 which is crossed over and rotated to be in a state of being slightly tilted rearward. As a result, the seat cushion 1 is configured such that the over-cross W is reduced with respect to the height N of the seat back 2 and the seat length is M. Similarly, in the rearward sitting as shown in FIG. 2B, the seat back 2 is in the horizontal state and the center O
1 and the end e of the seat leg 3 are supported. The seat cushion 1 rises around an over-crossed rotation center O2 and is rotated in a slightly forward tilted state, the height of the seat cushion 1 used as a seat back is N, and the length of the seat back used as a seat cushion is M. Thus, a seat similar to that in the forward seated state is constructed. The angle adjustment and fixing of the seat back are performed by the reclining devices 4 and 8 of the seat cushion 1 or the seat back 2 which has been raised.

In this embodiment, the seat cushion 1 and the seat back 2 are in contact with the end portions d and e of the seat leg 3 whose bases are the pipe frames 6 and 9 in the bed state. Since it is supported by, it is possible to obtain high support rigidity without applying excessive force to the reclining devices 4 and 8. In a normal seated state, the seat cushion 1 and the seat back 2 are tilted to realize forward seating and rearward seating, and the rotation centers O1 and O2 are over-crossed. Is configured, and a comfortable sitting effect is obtained. Although the seated cushion is supported by the end points d or e of the seat leg 3 in the present embodiment, the present invention is not limited to this, and as shown in FIG. The sitting position can be fixed by lifting the device slightly and reclining. Also in that case, a seat with a high back and a short cushion is obtained as in the case of this embodiment, and the occupant holds well and does not slip forward.

[0010]

As described above, according to the present invention, since the seat cushion and the seat back are respectively supported by the base body through the reclining device, the seating posture in the forward direction can be adjusted by independently adjusting the rotation. It is possible to easily realize a backward sitting posture or a flat state. Since the center of rotation of the reclining device is over-crossed with respect to the seat cushion and the seat back in the respective rotation regions, the seat cushion is shortened by the amount of over-cross with respect to the seat back in the seated state. As a result, a seat that is comfortable to sit in is formed that corresponds to the relationship between the leg length of the occupant and the upper body.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a diagram showing a usage example of an embodiment of the present invention.

FIG. 3 is a diagram showing another usage example of this embodiment.

FIG. 4 is a diagram showing a conventional example.

FIG. 5 is an explanatory diagram of a seating mode of a conventional seat.

[Explanation of symbols]

 1, 10 seat cushion 2, 20 seat back 3 seat leg 4, 8 reclining device 5, 11 hinge 6, 9 seat pipe frame 7, 10 cushioning material d, e seat leg end

Claims (2)

[Claims] 1. In a seat provided in a passenger compartment and provided with a seat cushion and a seat back, the seat cushion and the seat back are respectively supported by a base body via a reclining device, and the center of rotation of the reclining device of the seat cushion is the above-mentioned. A multi-purpose vehicle seat, wherein a center of rotation of a reclining device of the seat back is installed in a turning area of the seat back so as to overlap with each other in a turning area of the seat cushion. 2. A reclining device for the seat cushion is provided on one side of the seat on the left and right sides, and a reclining device for the seat back is provided on the other side of the seat for the left and right sides. Multipurpose seat for vehicle as described.