JPH059875Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a rotating seat back seat that can be installed in a wagon, bus, train, etc., or in a plaza, lobby, etc. This invention relates to a rotating seat with a seat back that can change the orientation of the seat back with respect to a seating part of the seat.

[Conventional technology]

Conventionally, in the case of seats for vehicles, etc., the orientation of the seating part is changed, for example, the orientation in the front and back direction is changed,
There are those that are formed on the facing seat or that are rotated so that the seating portion can be rotated in the front-rear direction or the left-right direction.

[The problem that the idea aims to solve]

However, in the case of conventional rotating seats, the seat back can only be moved in two directions, front and back, and the seating direction is limited to two directions, front and back, or the seat is made up of a seat cushion and a seat back. Since the entire seat is rotated by a rotary drive mechanism installed under the seat cushion or on the vehicle floor, the strength of the rotary drive mechanism has been a problem, resulting in an increase in size and weight. .

The purpose of this invention is to rotate only the seat back, and to freely rotate the seat back in a desired direction to change the seating area, to make the rotation mechanism smaller and lighter, and to operate the rotation mechanism. To provide a seat back rotating seat which is light and can be easily and quickly rotated.

[Means to solve the problem]

The present invention has been made in view of the above-mentioned problems, and includes forming a pivot in the center of the seating portion of the seat cushion, rotatably attaching the seat back frame to the pivot, and locking the seat back into the seat. It is characterized in that it can be locked in an appropriate position on the seat of the cushion.

[Effect]

According to the present invention, a pivot portion is formed in the center of the seating portion of the seat cushion, and the seat back frame is rotatably attached to the pivot portion, so that the seat back can be rotated in a desired direction, and the A suitable position on the cushion can be used as a seating part, and the seat bag is locked by a locking mechanism, thereby locking the position of the seating part.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The seatback rotating seat according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 and FIG. 2 each show an outline of an embodiment of the present invention, and this embodiment will be explained as a case where it is applied to a rear seat arranged behind a front seat as a vehicle seat. However, the present invention is not limited to this, and can be applied to, for example, train seats, seats installed in plazas, lobbies, etc.

The rear seat 1 includes a seat cushion 2 and a seat back 3, and the seat cushion 2 is formed into a rectangular shape in plan view in this embodiment. A seat back 3 is provided in the center of the seat cushion 2, and seating parts 4 and 5 are formed at the front and rear of the seat back 3.

As shown in FIG. 2, a pivot shaft 8 as a pivot support 7 is formed in the center of the seat cushion 2 to protrude upward, and the seat back frame is rotatably fitted onto the pivot shaft 8. 11 is formed.
The pivot shaft 8 can be provided on the seat cushion frame or the vehicle floor 6. Also, a plurality of lock grooves 9 are formed along the outer periphery of the pivot shaft 8, into which lock pieces 24 of a lock mechanism 21, which will be described later, are inserted.

The seat back frame 11 is shown as a plate-shaped frame, but if it has a cylindrical part 13 as a pivot part 12 extending in the vertical direction in the center, it can be a frame-shaped frame with a seat spring stretched over it. Good too. And seat back frame 11
Pad materials 14a and 14b are attached to the front and rear surfaces, respectively, and covered with a skin material (not shown).

By fitting the cylindrical portion 13 as the pivot portion 12 of the seat bag frame 11 to the pivot shaft 8 as the pivot portion 7 provided in the center of the seat cushion 2, the seat bag 3 is centered around the pivot portion 7. It will rotate to. In this embodiment, a pivot shaft 8 projecting upward from the center of the seat cushion 2 is provided to form the pivot 7, but a cylindrical pivot is formed inside the center of the seat cushion 2, A pivot shaft that fits into the cylindrical portion may be formed to protrude downward from the center portion of the seat back frame 11.

The seat back frame 11 has a lock mechanism 21.
An embodiment of the locking mechanism 21 is shown.
A control lever 22 rotatably supported on the seat back frame 11 and one end 22 of the control lever 22.
It includes a lock piece 24 provided at a and a spring 26 that biases the lock piece 24 in the locking direction,
The lock piece 2 is inserted through the hole 28 formed in the cylindrical part 13.
4 is adapted to fit into a lock groove 9 provided on the pivot shaft 8.

Therefore, when the operating lever 22 is operated in the direction of arrow a in FIG. 2, the lock piece 24 is pulled out from the lock groove 9 against the bias of the spring 26.
The cylindrical portion 13 of the seat back frame 11 and the pivot shaft 8 of the seat cushion 2 are now in a rotatable state, and the seat back 3 is rotated from the state shown by the solid line in FIG. 1 to the state shown by the imaginary line, and then Lock piece 2
By inserting and locking the seat portion 4 into the other lock groove 9a, the orientation of the seating portions 4 and 5 can be changed and they can be protected. Note that the lock mechanism 21 is not limited to the one shown in the drawings; if the lock mechanism 21 is to be rotated in only one direction, a ratchet mechanism may be used, or a coil spring may be used between the pivot shaft 8 and the cylindrical portion 13. It can also be an inserted spring lock. Furthermore, the shape of the seat cushion is not limited to a rectangular plane, but if it is circular in plane,
It is possible to form a circular sheet and to make various other modifications.

[Effect of idea]

The above is the configuration of one embodiment of the seatback rotating seat according to the present invention. According to this configuration, the seatback can be rotated around the pivot provided in the center of the seat cushion. Moreover, it is possible to reliably rotate and hold the seat back at the desired position, and since it is only necessary to use a rotating mechanism for the seat back, the rotating mechanism can be made smaller and lighter, and furthermore, it is possible to rotate only the seat back. Therefore, it is possible to obtain a seat back rotating seat which is light in weight and can be rotated easily and quickly.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 each schematically show an embodiment of the seatback rotating seat according to the present invention.
FIG. 1 is a perspective view of the present invention applied to a rear seat of a vehicle, and FIG. 2 is an exploded perspective view. In the figure, 1...rear seat, 2...seat cushion, 3...seat back, 4, 5...seating part,
7... Pivotal part, 8... Pivot shaft, 9, 9a... Lock groove, 11... Seat back frame, 12...
Pivotal part, 13...Cylindrical part, 21...Lock mechanism,
22... Operating lever, 24... Lock piece, 26...
…spring.

Claims (1)

[Scope of utility model registration request] A pivot part is formed in the center of the seating part of the seat cushion, a seat bag frame is rotatably attached to the pivot part, and the seat bag can be locked at an appropriate position in the seating part of the seat cushion by a locking mechanism. A rotating seat with a seat back.