JPH07106166B2 - Chair seat tilting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hairdressing and beauty chair or the like used in a hairdressing and beauty salon when the backrest is laid down rearward, with the seat facing the backrest side. The present invention relates to a seat tilt device for a chair that moves and raises the backrest side of the seat.

[Conventional technology]

In a conventional chair used for beauty and the like, when the backrest is laid down backward, the seat is tilted in conjunction with this.
There was a thing to prevent an unreasonable posture by lying down.

[Problems to be Solved by the Invention]

In such a chair, since the backrest and the seat become a substantially continuous shape due to the reclining of the backrest, the seated person does not have an unnatural posture, but the back and hips when seated on the chair Depending on the angle between the two, the garment extending between them is contracted due to the change in the angle between them, and this contracted portion becomes a wrinkle.

Or, on the contrary, the clothes may be pulled and slipped.

Also, when the backrest is laid down backwards and back shampoo is performed, a person with a short height cannot reach the head of the shampoo ball. There was also the hassle of having to move the body backwards.

[Object of the Invention]

The present invention, in order to solve the above-mentioned problems at the time of reclining back in the chair, in conjunction with the reclining of the backrest, while raising the backrest side of the seat, slide the seat to the backrest side. The object of the present invention is to eliminate the need to shift the body backward in order to reach the shampoo ball when back shampooing, and to prevent wrinkles and misalignment of clothes.

[Means for Solving the Problems]

The present invention relates to means for a seat tilting device for a chair for achieving the above-mentioned object, including a backrest pivotably supported on the rear of an abutment and slidably supported on the abutment. A seat, a first interlocking means for tilting the backrest by expanding and contracting a driving means such as a cylinder, and retracting the seat to the backrest side when the backrest reclines by expanding and contracting the driving means. It is provided with a second interlocking means for raising.

In addition, a backrest pivotably supported behind the abutment, a driving means such as a cylinder for raising and lowering the backrest, and a backward movement while moving upward with respect to the abutment via a pair of rotating arms. And a drive means such as a cylinder connected to the seat.

[Action]

In the seat tilting device for a chair of the present invention, in the first means, when the backrest is laid down rearward, the backrest side of the seat is raised by the interlocking means interlocking with the backrest, and the seat is directed toward the backrest. It slides.

Further, in the second means, when the backrest is laid down rearward, the driving means such as a cylinder operates to raise the seatback side and the seat slides toward the backrest. is there.

Example of Invention

Next, one embodiment of the first means of the present invention will be described with reference to FIGS.
The figure will be described.

Reference numeral 1 denotes an abutment, to which one end of a cylinder 2 is pivotally attached, and a rail 3 provided on the abutment 1 and a seat 4
The wheels 5 attached to the wheel roll.

Further, a bracket 8 attached to the abutment 1 has a mounting member 8 of a backrest 7 pivotally mounted on a shaft 9 so as to be rotatable, and a bracket 10 fixed to the backrest 7 includes:
A ram 2a of the cylinder 2 is pivotally attached by a shaft 11.

On the other hand, the connecting rod 13 pivotally mounted on the shaft 12 mounted on the seat 4 and the connecting rod 14 pivotally mounted on the shaft 11 are slidable on the angular shaft 15 pivotally supported by the bracket 6. Is so inserted.

A guide bar 16 is fitted on the shaft 11 side of the connecting rod 14, and the tip of the connecting rod 13 inserted into the angular shaft 15 is fixed to the guide bar 16 and is supported by the bracket 6. Connecting arm connected to the tip of rotating arm 17
The tip of 18 is rotatably connected to the guide bar 16.

A spring 19 is installed on the shaft 11 to urge the shaft 11 toward the cylinder 2.

In the seat tilt device of this chair, when the cylinder 2 is extended to push the shaft 11 of the bracket 10 against the shaft 9 of the bracket 6, the backrest 7 is erected as shown by the solid line in FIG. In this case, the guide bar 16 slides on the connecting rod 14 which is inserted into the square shaft 15 to bring the connecting rod 13 to the solid line angle in the figure of the base 1.

Therefore, the link rod 13 moves the shaft 12 as shown by the solid line in the figure,
Therefore, the wheel 5 rolls on the rail 3 to form the seat 4,
While moving in a direction away from the backrest 7, seat 4
The backrest side of 7 is lowered.

However, when the cylinder 2 contracts, the urging force of the spring 19 is also applied, and the shaft 11 is pulled, so that the backrest 7 moves to the shaft 9
Proceed to the rear with the fulcrum as a fulcrum.

By this fall, the guide bar 16 rotates the rotating arm 17 and is pulled by the connecting arm 18 and slides on the connecting rod 14 so that the angle of the connecting rod 13 is as shown by the two-dot chain line in FIG. Rotate.

Therefore, the shaft 12 is moved by the connecting rod 13, and while the wheels 5 are rolling on the rails 3, the seat 4 is moved toward the backrest 7, and one end of the connecting rod 13 is a guide bar.
Since it is fixed to 16, the shaft 12 is pushed up, so that the backrest 7 side of the seat 4 rises.

Therefore, the seat 4 and the backrest 7 have a relative relationship shown by a two-dot chain line in FIG.

Next, an embodiment of the second means of the present invention is shown in FIG.
FIG. 5 will be described.

Also in this embodiment, the backrest 21 is attached to the bracket 23 fixed to the abutment (not shown) by the rotatable shaft 22.

A rotary arm 24 is also fixed to the shaft 22, and a ram 25a of a cylinder 25 pivotally mounted on the abutment is pivotally mounted on the tip of the rotary arm 24.

Further, one end of two rotating arms 26 and 27 is pivotally attached to the abutment, and two places of a seat 28 are pivotally attached to the other end of the rotating arms 26 and 27. Two rotating arms 26,
27 is non-parallel, and a ram 29a of a cylinder 29 pivotally attached to the abutment is pivotally attached to the pivot arm 26.

The seat tilt device for this chair consists of a cylinder 25 and a ram 25a.
Is in an extended state, and as shown by the solid line in FIG. 4, the rotating arm 24 is pushed to rotate the bracket 23, and the backrest 21 is in an upright position.

At this time, the cylinder 29 and the ram 29a are in a contracted state,
The rotating arm 26 is pulled by the ram 29a and falls down,
The rotating arm 26 and the rotating arm 27 are not parallel to each other, and the rotating arm 26 is inclined more largely than the rotating arm 27.

Therefore, the seat 28 on the backrest 21 side is lower than the front side.

On the other hand, when the cylinder 25 is contracted to lie down on the backrest 21, the rotary arm 24 is pulled and the state shown by the solid line in FIG. 5 is passed through the two-dot chain line state in FIGS. 4 and 5. Back 21
Stand up.

Simultaneously with the contraction of this cylinder 25, the cylinder 29
a stretches.

By this extension, the rotating arm 26 is pushed and goes through the two-dot chain line state of FIGS. 4 and 5 to the solid line state of FIG. 5, and is pulled by the seat 28 in accordance with this rotation. The rotating arm 27 also rotates.

The seat 28 is moved toward the backrest 21 side by the rotation of the both rotation arms 26 and 27, and at the time of this rotation,
Since the rotating arm 26 is in a standing state as compared with the rotating arm 27, the backrest 21 side of the seat 28 is higher than the front side.

Therefore, the backrest 21 and the seat 28 shift to the state shown by the solid line in FIG.

〔The invention's effect〕

According to the present invention, as described above, as the backrest leans backward, the backrest side of the seat is raised by the interlocking means in the first means and the driving means such as the cylinder in the second means, and the seat is raised. Move toward the backrest.

Therefore, when a short person sitting on a chair does back shampoo, the head does not reach the shampoo ball, so that it is not necessary for the person to stretch himself or shift his hips backward.

In addition, since the backrest side of the seat rises, clothes are not pinched between the backrest and the lower part of the waist to cause wrinkles on the clothes or misalignment due to movement of the body. It has an effect.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the first means of the present invention.
The dashed-dotted line shows the backrest when it is lying down, FIG. 2 is a plan view of its operating mechanism, FIG. 3 is a perspective view of the same as above, and FIG. 4 is a backrest of one embodiment of the second means of the present invention. FIG. 5 is a side view when standing up, and FIG. 5 is a side view when the backrest is lying down. 1 …… Abutment, 2,25,29 …… Cylinder, 4,28 …… Sheet,
7,21 …… Backrest, 10 …… Bracket, 11,12,22 …… Axis,
13,14 …… Link, 15 …… Square axis, 16 …… Guide bar, 17…
… Rotating arm, 18 …… Coupling arm, 26,27 …… Rotating arm.

Claims (2)

[Claims] 1. A backrest pivotably supported behind the abutment, and a seat slidably supported on the abutment.
A first interlocking device for laying down the backrest by expanding and contracting a driving device such as a cylinder; and a second interlocking device for retracting and raising the seat to the backrest side when the backrest is laid down by expanding and contracting the driving device. A seat tilting device for a chair, comprising: 2. A backrest pivotably supported behind the abutment, a driving means such as a cylinder for raising and lowering the backrest, and a pair of rotating arms for raising the abutment. A seat tilting device for a chair, comprising a seat that retreats while moving backward and a driving means such as a cylinder connected to the seat.