JPS6030103Y2 - Device that doubles as a bed for vehicle seats - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bed-cum-bed device that allows a vehicle seat to also be used as a bed.

There have been seat devices in which the seat back falls horizontally and becomes completely flat together with the seat cushion, but this is not satisfactory when used as a bed.

The surface of the Sunawachi seat back and seat cushion is shaped with emphasis on its performance as a seat, so the seat surface is not flat, but has undulations.

Also, regarding the hardness of the seat surface between the seat back and seat cushion, the seat cushion has an extra stiffness compared to the seat back, so in order to feel the same hardness, the seat cushion should be harder than the seat back. It is necessary to make the seat comfortable.

Therefore, when this is used as a bed, there are problems in that the hardness of the surface is different and the surface is not flat, making it uncomfortable to use.

Therefore, the present invention was developed in view of the above-mentioned conventional problems, and it is possible to create a bed with a flat surface and a uniform hardness, but without compromising the comfort of the seat. The object of the present invention is to provide a device that doubles as a bed for a vehicle seat.

To this end, the present invention uses the bed-cum-bed device, which includes a seat cushion whose front part is pivotally connected to the leg and can freely rotate forward, and a seat cushion which is pivotally attached to the rear part of the leg so that the leg can be placed in an upright state and a reclining state. A seatback that is pivoted above the pivot of the reclining arm and can freely rotate forward, and a locking mechanism that is provided on the reclining arm and that engages and disengages a lock pin of the seatback. The lower surface of the seat cushion and the back surface of the seat back are molded to approximately the same hardness, and the seat cushion of the rear seat has the same hardness as that of the front seat. The seat cushion and the seat back are rotated forward, the reclining arm is laid down backwards, the seat back is held by the leg where the seat cushion was located, and the seat cushion of the rear seat is rotated forward. A stopper pin is provided that engages with the reclining arm of the front seat or a stopper protruding from the vehicle body to hold the bottom surface of the seat cushion of the rear seat approximately horizontally to the back of the seat back when the vehicle is seated. By doing so, the intended purpose was made to be a distant relative.

The present invention will be described below with reference to illustrative embodiments.

The vehicle seat consists of seat back 1 and seat cushion 2.
It consists of several legs arranged in the front and rear directions.

The back surface of the seat back 1 and the lower surface of the seat cushion 2 of each of the front and rear seats have approximately the same hardness and are formed approximately flat.

The front part of the seat cushion 2 is attached to a seat cushion frame 15 with a bolt 13 and a welding nut 14 on the side surface of the front upper end of the leg 11.
It is pivotally connected via a pivot 3 to a bearing plate 12 which is fixed to a bearing plate 12, and is rotatable forward about the pivot 3.

A reclining adjuster 20 is provided on the side surface of the rear upper end of the leg 11, and the lower end of the reclining arm 6 is rotatably attached to the reclining adjuster 20 via a pivot shaft 5.

The reclining arm 6 is provided on a reclining adjuster 20 or by operating a reclining handle 22 to change the angle or to lie horizontally backward.

Above the pivot shaft 5 of the reclining arm 6, the lower part of the seat pack frame 17 constituting the seat back 1 is connected via a collar 16 to a pivot shaft 7 made of a bolt.
It is pivotally attached to the front so that it can rotate freely.

18 is a flat washer, 19 is a spring washer, and 21 is a nut.

A locking mechanism 8 for the seat back 1 is provided near the upper end of the reclining arm.

The locking mechanism 8 has a support shaft 8d on the reclining arm 6.
When the reclining arm 6 and the seat back frame 17 are in a normal positional relationship, the lock lever 8b of the seat pack frame 17 is rotatably supported by a lock lever 8b and has a release knob 8a.
The lock lever 8b is configured with a lock pin 8c that protrudes from the part where the lock lever 8b is located, and allows the lock lever 8b to be freely engaged and detached. It is designed to act on

At the rear of the seat cushion frame 15 constituting the seat cushion 2, there is a seat cushion 2 of the front seat.
and the seat back 1 are rotated forward, the reclining arm 6 is folded backward, the seat back 1 is held by the leg 11 where the seat cushion 2 was located, and the seat cushion 2 of the rear seat is rotated. When the front seat is rotated forward, a stopper pin 9 is protruded at a position corresponding to the lock lever 8b provided on the reclining arm 6 of the front seat, and the stopper pin 9 engages with the lock lever 8b, thereby locking the seat. The lower surface of the cushion 2 is held substantially parallel to the back surface of the seat back 1 of the front seat.

The seat cushion 2 of the frontmost seat is held substantially horizontally with the back surface of the seat back 1 by engaging a stopper pin 9 with a stopper 4 protruding from the vehicle body side, as shown in FIG. It is done like this.

When making a bed using the seat bed device of the present invention constructed as described above, first operate the reclining handle 22 to tilt the seat back 1 horizontally backwards as shown by the chain line in FIG. Make it completely flat.

Then, the seat cushion 2 of the frontmost seat is rotated forward about the front pivot 3 of the seat cushion 2, and the stopper pin 9 is engaged with the stopper 4, and the back surface of the seat cushion 2 is rotated. Make it horizontal.

Next, the release knob 8a of the locking mechanism 8 of the seat back 1
, remove the pin 8C from the lock lever 8b, rotate the seatback 1 forward about the pivot 7, and place the front end of the seatback 1 on the leg 11.

At this time, the position of the pivot shaft 7 of the reclining arm 6 is determined in advance so that the front end (upper end) of the seat back 1 contacts the rear end of the seat cushion 2.

Also, the lower surface (in this state, the upper surface) of the seat cushion 2 and the back surface of the seat back 1 are made to be at the same height.

In the same manner, the seat cushion 2 of the rear seat is rotated to engage the stopper pin 9 with the lock lever 8b provided on the reclining arm 6 to lock it.

The seat back 1 of the rear seat is also placed on the legs 11 in the same manner as described above.

As a result, each sheet is arranged completely flat without any undulations, as shown in FIG.

As described above, according to the present invention, the back surface of the seat back and the bottom surface of the seat cushion are molded to have approximately the same hardness,
The seat back and seat cushion are rotated forward to create a bed, so it is long in the front and rear direction and
A flat bed surface with uniform hardness can be obtained, resulting in a good usability.

In addition, the stopper mechanism of the seat back installed on the reclining arm of the front seat can also be used as a stopper for the seat cushion of the rear seat, so there is no need to separately provide a stopper for the seat cushion of the rear seat. Since the stopper mechanism does not protrude into the cabin when the seat is in the seated state, there is no risk of catching the occupant's legs or clothes, improving safety.
Ease of getting on and off is also improved.

Furthermore, according to the present invention, the seat back and seat cushion can have the same seating surfaces as conventional ones, so that the performance of the seat is not impaired and a comfortable seat can be obtained.

Furthermore, according to the present invention, the interior of the vehicle, which is flattened by the construction of a bed, has the effect of securing a vast luggage space compared to the small space for luggage behind the seats of conventional passenger-only cab-over vehicles. be.

Note that the device of the present invention can also be applied to seats other than vehicles.

[Brief explanation of drawings]

The drawings show an embodiment of the vehicle seat bed-cum-bed device according to the present invention, and FIG. 1 is a side view, FIG. 2 is a side view of the vehicle seat in a fully flat state used as a bed, and FIG.
The figure is a side view of one seat cushion part, and Figure 4 is a side view of one seat cushion part.
Figure A-A' line sectional view, Figure 5 is Figure 3 B-B' line sectional view, Figure 6 is a side view of a part of the seat back part, Figure 7 is Figure 6 C-c' line. Cross-sectional view, Figure 8 is Figure 6 [) -D'
FIG. 1... Seat back, 2... Seat cushion, 3... Pivot, 4... Stopper, 5... Pivot, 6... ... Reclining arm, 7 ... Pivot, 8 ... Lock & QII, 9 - Stopper pin.

Claims (1)

[Scope of utility model registration request] A seat cushion whose front part is pivotally connected to the leg and can freely rotate forward; a reclining arm which is pivotally connected to the rear part of the leg and held by the leg in an upright state and a reclining backward state; and the reclining arm. A seat is disposed in the front-rear direction and includes a seat back that is pivotally mounted above the pivot point of the seat and can freely rotate forward, and a lock mechanism that is provided on the reclining arm and that engages and disengages a lock pin of the seat back. In the front and rear seats, the bottom surface of the seat cushion and the back surface of the seat back are molded to approximately the same hardness, and the seat cushion of the rear seat has a structure that rotates forward with the seat cushion of the front seat and the seat back. When the reclining arm of the front seat is folded backwards and the seat back is held by the leg where the seat cushion was located, and the seat cushion of the rear seat is rotated forward, the reclining arm of the front seat or the vehicle body side A device that doubles as a bed for a vehicle seat, characterized in that a stopper pin is provided which engages with a stopper protruding from the rear seat to hold the lower surface of a seat cushion of a rear seat substantially horizontally with the back surface of a seat back.