JPH0134583Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically returning a backrest having a reclining function in a rotating seat for a vehicle when the rotating seat rotates.

The rotating seat for vehicles that has been commonly used in the past is
A leg stand is fixed to the vehicle body side, an underframe is rotatably attached to the leg stand via a rotation device, and sleeves,
The seat cushion, backrest, middle armrest, etc. are constructed so that they can be rotated together with the underframe, and the backrest is often equipped with a mechanism for reclining via a tilting device.

However, in conventional rotating vehicle seats, the underframe rotation mechanism and the backrest reclining mechanism are structured to function separately, and the rotational position of the underframe is corrected and the backrest is returned to its inclination. In terms of operation, it is necessary to separately operate handles, buttons, etc. installed on each device, which has the disadvantage that operation is time-consuming.

This invention solves the above problems,
The purpose is to provide a device that can automatically return the back to its pre-reclining posture by simultaneously operating a tilting device during the rotating operation of the rotating seat.

Embodiments of the present invention will be described below with reference to the drawings.
In the drawings, reference numeral 1 denotes a footrest fixed to the vehicle body side. The underframe 2 of the rotating seat is rotatably mounted on the leg stand 1 via a rotating device. In the present invention, the rotating device includes, as shown in FIG. 2, a rotating plate 3 fixed below the underframe 2, a central shaft 4 fixed to the lower end surface of the rotating plate 3, and rotating together with the rotating plate 3; It is composed of a donut-shaped rotary plate receiving plate 5 fixed to the upper part of the leg base 1, and the rotating plate 3 and the rotating plate receiving plate 5 are formed along the circumferential direction at the outer periphery of each. It is provided with support grooves 6 that match each other in a tubular shape, and a plurality of steel balls 7 interposed in the support grooves 6 are used as rolling members to be able to slide and rotate relative to each other. Here, the rotating plate receiving plate 5 also serves as a fixing device for fixing the rotating seat at a desired rotational position, and is provided with a large number of notched grooves 8 at predetermined intervals on its outer periphery. A retaining pawl 9 is provided on the outer side of the rotary plate receiving plate 5 and moves freely forward and backward from the notch groove 8 of the rotary plate receiving plate 5 in the horizontal direction.
Place. This retaining pawl 9 is always urged in the direction of being pushed into the notch groove 8 by a spring 11 attached to the opposite side of the lever 10.
By pulling the handle 12, the retaining pawl 9 is removed from the notch groove 8, the underframe 2 is rotated, and the lever 10 is engaged with the notch groove 8, so that the underframe 2 can be fixed in a predetermined direction. ing. The number of notched grooves 8 in the rotating plate receiving plate 5 or the distance between one notched groove 8 and other notched grooves 8 can be freely increased or decreased depending on the use of the rotating seat. In addition, in the present invention, the inclination angle of the backrest is as shown in FIG.
It is comprised of a locking device 14 for maintaining a predetermined inclination angle, and a button 15 for releasing the locking operation of the locking device 14. That is, one end of the locking device 14 is connected to an arm 16 attached to the lower end of the backrest 13, and a lever 18 is connected to a plunger 17 formed on the other end, and this lever 18 is used for releasing, connecting rods, etc. Engagement element 1
The button 15 is connected to the lever 20 on the device side via the button 9. In the illustrated embodiment, by lifting the button 15, the lever 20 is rotated against the tension of the spring 21, pulling the release used as the engagement element 19, and also pulling the lever 18 on the side of the locking device 14. Pull it to rotate it on the shaft 22, push the plunger 17 of the locking device 14 with its end, release the locking operation of the locking device 14, extend and retract the locking device 14, and move the backrest 13 to any position. The tilt angle can be adjusted. A lever 18 for pushing the plunger 17 of the locking device 14 and a lever 10 linked to the pawl 9 on the rotating device side are connected using an engaging element 23 such as a release or a connecting rod.
In other words, even if the lever 18 pulls the engagement element 19 connected to the button 15 device side, the lever 18 will not release the locking claw 9 again.
The plunger 17 of the locking device 14 can also be moved in the pushing direction by pulling the engaging element 23 connected to the side, and thus the handle of the pawl 9 can be pulled in order to rotate the underframe 2 of the rotating seat. At the same time, the lever 10 is rotated, the lever 18 connected to this lever 10 via the engagement element 23 is rotated, and the plunger 17 is pushed, thereby releasing the locking operation of the locking device 14 and automatically lowering the back. It can be reinstated. 24 is a seat cushion installed on the underframe 2, and 25 is a sleeve.

Since the present invention is constructed as described above, when the tilting device alone functions, the tilting angle of the backrest can be freely adjusted by pulling up the button, and when rotating the underframe, By pulling the handle, the backrest can automatically return to its pre-reclined position, and even if the seat is rotated while the backrest remains tilted, the backrest will automatically return to its original position and prevent other backrests from collapsing. It is possible to simplify the handling of the rotating seat in order to avoid interference with the seat and the wall.

[Brief explanation of drawings]

The drawings relate to an embodiment of the automatic backrest return device during rotation according to the present invention, and FIG. 1A is a side view showing the external shape of the rotating seat, FIG. 3 is a sectional view taken along the line A--A in FIG. 2, and FIG. 4 is a side view of the tilting device. 1... Leg stand, 2... Underframe, 3... Rotating plate, 4...
... Central shaft, 5 ... Rotating plate receiving plate, 8 ... Notch groove, 9
... Stopping claw, 10 ... Lever, 12 ... Handle, 1
3...Backrest, 14...Lock device, 15...Button, 17...Plunger, 18...Lever,
19... Engagement element, 20... Lever, 23... Engagement element.

Claims (1)

[Scope of Claim for Utility Model Registration] A seat equipped with a rotating device that rotatably supports the underframe and a tilting device that tilts and supports the backrest at a desired angle, with a lock that fixes the backrest of the seat at a desired tilted position. A lever for pushing the plunger of the device is equipped with a hand-operated lever for releasing the locking operation of the locking device via a release or other engagement element, and a stopper for fixing the rotating device in a predetermined direction on the rotation receiving plate. The levers on the operating side for operating the seat are connected to each other, and when either of the levers on the operating side is operated, the backrest is automatically returned from the tilted position. Automatic back-slip return device during rotation.