JPH08132938A - Vehicular multi-purpose seat - Google Patents

Abstract

PURPOSE: To provide a vehicular seat of high supporting rigidity with simple constitution. 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 set leg 3. The rotational centers of the seat cushion 1 and seat back 2 are overlap-crossed in the respective rotating areas. When the seat cushion 1 and the seat back 2 are placed horizontally, pipe frames 6, 9 in the seat cushion 1 and seat back 2 come in contact with the end parts d, e of the seat leg, and the force of pushing a seat downward is supported by two-point spans L, S between the center of the reclining devices 4, 8 and hinges 5, 11 and the end parts d, e of the seat leg 3, so that the seat cushion 1 and the seat back 2 are placed in the position kept in the horizontal state. Force applied to the reclining devices can thereby be reduced, and high supporting rigidity can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle multipurpose seat that enables an expanded usage pattern.

[0002]

2. Description of the Related Art Conventionally, in an automobile such as a one-box car or a railway vehicle, the posture of a seat can be changed like a reclining seat in order to improve convenience for passengers. It has become. FIG. 3 shows a separate seat as an example of this type of seat. The seat cushion 20 is fixed in the passenger compartment, and the seat back 30 is rotated with respect to the seat cushion 20 by a reclining mechanism 40 and a hinge 50. When the bed is used as a bed, the seat back 30 is tilted backward to a horizontal state to realize a wide and flat cushion bed as a whole.

[0003]

However, although the above-mentioned conventional type is often used in passenger car one-box vehicles, railroad vehicles, etc., the reclining mechanism 40 and the seat cushion and the lower part of the seat back are used to maintain the posture of the seat. Since only the torsional rigidity of the passing pipe frame is relied upon, when the seat is fully flat and in a cushion bed state, the torque resistance strength of the reclining mechanism 40 and the torsional rigidity of the pipe frame are insufficient with respect to the load from above to below. . This has a problem in that, particularly when the seat is a bench seat, the long pipe frame and the reclining mechanism on one side have weaker support rigidity, which makes it practically difficult to use as a cushion bed.

In order to increase the supporting rigidity, it is considered that the reclining mechanisms 40a and 40b are provided on both sides of the seat to support the seat cushion and the back from both end points as shown in FIG.
It must be an interlocking type reclining mechanism that operates in conjunction with whichever b is operated. There is a problem that the structure becomes complicated and the cost becomes high.

On the other hand, in a freight-type one-box car, etc., as shown in the perspective view of FIG. 5A and the rear view of FIG. As shown in FIG. 6, a bench seat is used in which the legs 60 are applied to the floor to receive a load from above and reduce the force to the reclining mechanism 80. However, in the case of this seat, even if the legs are folded, it looks bad because it is exposed to the outside behind the seat back, and when it is full flat, the legs 60 are operated to open and then hit the floor. There was a problem that I had to operate. In view of the above problems, an object of the present invention is to provide a vehicle seat having high support rigidity even in a full flat bed state, which can be used as a bench seat without using legs for enhancing support rigidity. To do.

[0006]

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 in the full flat state, the base body is supported. An end portion of the seat cushion contacts the frame of the seat cushion and the seat back and is configured to support the seat cushion and the seat back.

[0007]

[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 Further, in the full flat state, the end portion of the base body hits the frame of the seat cushion and the seat back to support the seat cushion and the seat back. Therefore, high supporting rigidity can be obtained even in the full flat state without relying only on the holding force of the reclining device. As a result, it is possible to configure a sheet that has sufficient strength and rigidity of the sheet and has a good appearance.

[0008]

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 supported around a center of a left reclining device 4 fixed to a seat leg 3 as a base with a bolt (not shown) and a hinge 5 fixed to the seat leg 3 by welding or the like. The angle is adjusted and fixed by the operation of 4. The seat cushion 1 is composed of a seat pipe frame 6 passing through the bottom and a cushioning material 7 thereon. The seat back 2 is basically composed of a seat pipe frame 9 passing through a bottom portion and a cushioning material 10 thereon, as in the seat cushion 1.
Left reclining device 8 bolted to seat leg 3 and hinge 1 fixed to seat leg 3
It is supported around the center of No. 1 and the angle is adjusted and fixed by operating the reclining device 8. The rotation centers of the seat cushion 1 and the seat back 2 are overlapped and crossed in their respective rotation regions, so that the seat cushion 1 and the seat cushion 2 can be seated in the front and rear positions.

When the seat cushion 1 and the seat back 2 are horizontal, the seat pipe frames 6 and 9 in the seat cushion 1 and the seat back 2 are seated on the seat leg 3.
The force of pushing the seat downwards by hitting the ends d and e of the reclining device 4 and the hinges 5 and 11
The seat cushion 1 and the seat back 2 are continuously supported by a span L and S at two points between the center of the seat leg 3 and the ends d and e of the seat leg 3, and the seat cushion 1 and the seat back 2 are kept in a horizontal position. In a normal seated posture, as shown in FIG. 2, the seat cushion 1 is set in a substantially horizontal state while the tip end thereof is slightly lifted to be set slightly higher, and the seat cushion 2 is erected around an over-crossed rotation center O to rotate. Then, it is tilted slightly backward. As a result, the seat cushion 1 is shortened by an amount W over the height N of the seat cushion 2, the front-rear length is M, and the entire seat is in a backward leaning posture, which is comfortable to sit and well held by the occupant. The waist does not slip forward. Also, when the seat cushion 1 is used as the back and the seat back 2 is used as the cushion and the seat is facing backward, the same state as described above is obtained and the same effect is obtained. It should be noted that each of the reclining devices 4 and 8 holds the posture when sitting.

The present embodiment is constructed as described above, and in the normal sitting posture, the seating angles of the seat cushion 1 and the seat back 2 are adjusted and fixed by reclining. And seat cushion 1 and seat back 2
When the seat cushion 1 and the seat back 2 are used as a bed, the pipe frames 6 and 9 of the seat cushion 1 and the seat back 2 are supported by abutting the ends d and e of the seat leg 3 serving as a base, so that the seat is comfortable to sit on. In a fully flat state in which the load is obtained and a load is applied, high supporting rigidity can be obtained without applying an excessive force to the reclining devices 4 and 8 and without using an interlocking type reclining device. Since it is not necessary to provide legs for supporting the seat back, it is possible to construct a seat that is easy to operate and has a good appearance.

[0011]

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. Further, in the full flat state, the end portion of the base body hits the seat cushion and the frame of the back to support the seat cushion and the seat back, so that high supporting rigidity can be obtained even in the full flat state without relying only on the holding force of the reclining device. As a result, it is possible to configure a sheet that has sufficient strength and rigidity of the sheet and has a good appearance.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an example sheet of the present invention.

FIG. 2 is a diagram showing an example of use of an example sheet.

FIG. 3 is a diagram showing a conventional separate sheet.

FIG. 4 is a view showing a conventional separate sheet provided with reclining devices on both sides.

FIG. 5 is a view showing a conventional bench seat.

FIG. 6 is an explanatory diagram of a full flat mode of a conventional bench seat.

[Explanation of symbols]

1, 20 seat cushion 2, 30 seat back 3 seat leg 4, 8, 40, 40a, 40b, 80 reclining device 5, 11, 50 hinge 6, 9 seat pipe frame 7, 10 cushioning material 60 leg d, e seat leg edge

Claims (1)

[Claims] 1. A seat provided with a seat cushion and a seat back in a passenger compartment, wherein the seat cushion and the seat back are respectively supported by a base body via a reclining device, and an end portion of the base body is supported in a full flat state. A multi-purpose vehicle seat, configured to support the seat cushion and the seat back by hitting a frame of the seat cushion and the seat back.