JPS6232461Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention aims to provide a simple structure of a seat in which the seat rest and back rest are rotated and reclined as one unit, and the seat rest and back rest are rotated on a base. A seat rest is provided on a movable frame whose rear part is pivotally connected to a rotating plate that is dynamically provided, and a back rest is provided at the rear of the seat rest, and the rear end of the rotating plate is attached to a pivot point. The rearward or forward displacement of the front end of the pivoted free lock is linked with the upward or downward displacement of the front part of the movable frame.

The configuration of the present invention will be explained below with reference to the drawings of embodiments of the present invention.

First, we will explain the correspondence between the symbols in the diagram and the names of their parts. 1 is the base, 2 is the rotating plate, 3 is the pivot shaft, 4 is the movable frame, 5 is the seat, 6 is the back rest, and 7 is the Pivot point 8 is a free lock.

A seat rest 5 is provided on a movable frame 4 whose rear part is pivotally connected by a pivot shaft 3 to a rotating plate 2 rotatably provided on a base 1, and a back rest is provided at the rear of the seat rest 5. 6 will be provided. The seat rest 5 is fixed onto the movable frame 4, for example, with bolts. The seat rest 5 and the back rest 6 are, for example, integrally formed.

For example, a rotation regulating cam 10 having an appropriate number of rotation regulating recesses 9 is fixed to the base 1.

It is pivotally connected to the rotating plate 2 by a pin 11, and the spring 12
A rotation restriction rod 13 is provided which is biased by the rotation restriction recess 9 and engages with the rotation restriction recess 9.

By operating the rotation button 14, the rotation restriction rod 13 is pulled via the rotation rope 15, and the rotation restriction recess 9 is pulled.
can be released from the engagement.

By operating the reclining button 16, the normally locked state of the free lock 8 can be changed to the free state via the reclining cable 17.

A known method can be used for the free lock 8, and a known method can be used to operate the free lock 8 to the locked or free state using the reclining button 16.

The lower end of the operating rod 19, which is pivotally connected to the front part of the rotating plate 2 by a pin 18, is pivotally connected to the front end of the free lock 8 by a lower pin 20, and the upper end is bored into the front part of the movable frame 4 by an upper pin 21. Almost horizontal long hole 22
When the front end of the free lock 8 is displaced forward, the front part of the movable frame 4 is displaced downward, and the upper pin 21 is positioned at the rear of the elongated hole 22 at this time. do.

Since the present invention has such a configuration, its functions and effects are as follows.

In the state shown in the picture, the rotation regulating rod 13 has a rotation regulating recess 9.
Since the rotating plate 2 does not rotate, the seat rest 5 and the back rest 6 are stable against rotation. When the rotation button 14 is operated to release the engagement between the rotation restriction rod 13 and the rotation restriction recess 9, the rotation plate 2 becomes free to rotate and rotates appropriately to correspond to the angle. If the rotation restriction rod 13 is engaged with the rotation restriction recess 9, it can be stabilized at that angle. If the picture is in the forward direction of the seat, it can now turn 180 degrees to the opposite position. The picture shows the backrest in its minimum reclined state. In this state, the free lock 8 is locked.

When the reclining button 16 is operated to free the free lock 8, the backrest 6 is reclined to a large extent, and the movable frame 4 is rotated around the pivot shaft 3 to displace its front part upward, the elongated hole 22 The upper pin 21 moves forward in the elongated hole 22 while being lifted upward, the operating rod 19 rotates around the pin 18, and the lower pin 20 moves the front end of the free lock 8 backward against the spring 23. However, if the user stops operating the reclining button 16 at this time, the free lock 8 is locked and the back rest 6 is fixed at that reclining angle.

When the reclining button 16 is operated to free the free lock 8, the lower pin 20 moves forward due to the bias of the spring 23, the front part of the movable frame 4 is displaced downward, and the reclining angle becomes small, and the reclining button 16 can be released and fixed in that position.

In short, the configuration is such that the rearward or forward displacement of the front end of the free lock 8 and the upward or downward displacement of the front part of the movable frame 4 are linked, and is not limited to this embodiment.

In this invention, the backrest, seatrest, and armrest constantly change in unison when reclining, making it very comfortable to wear.

In this way, according to the present invention, a rotary seat can be obtained in which the seat rest, back rest, and armrest can be reclined while always being integrated, which is of great practical value.

[Brief explanation of the drawing]

The first view is the front view, the second view is the top view excluding the seat, back and armrests, and the third view is the cutout side view. In the figure, 1 is a base, 2 is a rotating plate, 3 is a pivot shaft, 4 is a movable frame, 6 is a back rest, 5 is a seat rest, 7 is a pivot point, and 8 is a free lock.

Claims (1)

[Scope of utility model registration request] A rotating plate 2 is rotatably installed almost horizontally on the base 1, and the rear part of the movable frame 4, which is positioned almost horizontally above the rotating plate 2, is pivoted to the rear of the rotating plate 2. 3, a seat rest 5 is provided on the movable frame 4, a back rest 6 is provided at the rear of the seat rest 5, a long hole 22 in the front and back direction is bored in the middle of the movable frame 4, and the rotating plate 2 is The operating rod 1 is connected by a pin 18 located forward of the elongated hole 22 at the front end.
The rear end of a free lock 8 located in the front-rear direction below the rotating plate 2 is pivotally connected to the rotating plate 2 at the pivot point 7, and the upper pin 21 at the upper end of the operating rod 19
is loosely inserted into the rear part of the elongated hole 22, and the lower pin 20 of the lower end of the operating rod 19 is pivotally connected to the forwardly displaced front end of the free lock 8.