JP2000000132A - Location regulating device for body contact face of chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and simply regulate the longitudinal location of a seat plate to a back rest, for a chair of an office desk. SOLUTION: At both sides of the upper face of a fixed shell 10 of a chair, a rail 11 is respectively laid, a large number of engaging hooks 14 which vertically hung from both sides of the lower face of a flexible seat plate shell 13 on the lower face of a seat plate 12, are longitudinally movably engaged with the rails 11, and also, on both superposed faces of the rails 11 and the engaging hooks 14, a large number of uneven lines 16 which are engaged with each other by the weight of a sitter, face sideways, and are arranged in a manner to be close with each other in the longitudinal direction, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device which can adjust the position of a seat plate or a backrest of a chair of an office desk in accordance with the size and preference so as to be comfortable for a seated person.

[0002]

2. Description of the Related Art In many chairs, the upper surface of a seat plate is a flat surface which is easy to manufacture.
In many cases, the upper surface of the seat plate is curved in accordance with the shape of the buttocks and the back of a person so that the seated person can relax in a comfortable posture without feeling uncomfortable and concentrate on work for a long time.

FIG. 7 shows the use of the latter type of chair (1), wherein (2) is a leg, (3) is a fixed shell,
(4) is a seat plate, (5) is a backrest, (6) is a desk, and (7) is a seated person.

[0004] In this chair (1), the rear portion of the seat plate (4) is inclined upward, so that when the seated person (7) sits rearward from a standard seating position depending on the physique and posture, the seat plate (4) is moved downward. 4) The rear end hits the buttocks and is uncomfortable, and when seated behind the standard seating position, the entire buttocks are not supported, resulting in a sense of incongruity and inability to calm down.

In order to avoid this, the backrest of the seat plate (4)
Various chairs have been provided which can adjust the front and rear position with respect to (5) according to the physique and preference of the occupant (7).

[0006]

However, the conventional seat plate position adjusting device as described above merely moves the seat plate in parallel, and cannot cope with occupants of various body shapes. .

[0007] Most of the means for fixing the seat plate are of multi-stage type using bolts and levers, so that the operation in an office or the like is troublesome and a failure may occur. And the equipment has become expensive.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a device that can maintain comfortable sitting comfort even for occupants of different body shapes.

[0009]

The present invention has solved the above-mentioned problems as follows. (1) A rail is laid on each of the right and left sides of the fixed shell fixed to the chair, and the body contact surface of the chair is formed of a flexible shell. Are provided with a number of engagement hooks which are movably engaged in the front-rear direction, and the fixing shell and the flexible shell are provided with a fixing device which is activated by the weight of the occupant to fix the flexible shell to the fixing shell. .

(2) In the above item (1), the fixing device of the flexible shell is formed on the facing surface of the rail of the fixed shell and the engaging hook of the flexible shell. A large number of concavo-convex strips are arranged in close proximity.

[0011]

1 to 6 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the legs of the chair (8)
A fixed shell fixed to the upper end of (9) and having an upper surface curved in the same shape as the human hips (10)
Rails (11) are respectively laid along the upper surface of (10).

As shown in FIGS. 3 to 5, the fixed shell (10)
On the upper surface of the seat, a seat plate (1
2) is placed by engaging a hook described below with the rail (11).

That is, a large number of L-shaped bent engagement hooks are vertically provided on the lower right and left sides of the flexible seat plate shell (13) on the lower surface of the seat plate (12). (14) is engaged with the rail (11) movably back and forth. (15) is a polyurethane foam cushion.

On both overlapping surfaces of the rail (11) and the engaging hook (14), a large number of concave and convex strips (16) are formed in the left and right direction and are arranged in front and rear at equal intervals, and when the seat is vacant, As shown in FIG. 4, the elasticity of the seat plate shell (13) releases the engagement of the upper and lower ridges (16), and as shown in FIG.
2) can be moved back and forth.

In the above-mentioned chair (8), before seating, a seat plate
After moving (12) to a position that matches his or her physique and desired posture, if he / she sits, as shown in FIG. 5, the upper and lower ridges (16) together with the seat plate shell (13) depend on the weight of the occupant. The seat plate 12 is fixed to the chair 8 so that the seat plate 12 does not move even when the user leaves the seat.

The curve of the rail (11) is
Even if (13) is moved back and forth, the curvature of the seat plate shell (1
3) It can be obtained regardless of the length of the front and back, and can correspond to seated persons of various physiques.

Further, the fixing device of the seat plate (12) is not limited to the upper and lower recessed grooves (16), but may be another mutual engaging device that operates according to the weight of the occupant.

In the present embodiment, the seat shell (13) is described as an example of the flexible shell. However, the present invention is not limited to this and can be applied to a back shell.

[0019]

According to the first aspect of the present invention, since the fixing and liberalization of the flexible shell are automatically performed according to the weight of the occupant, no tools or the like are required for adjusting the position of the seat plate. It is significantly simpler and easier than conventional devices.

Further, since it is not restricted by the shape of the seat plate, it can be applied to chairs of various designs.

According to the second aspect of the present invention, the structure for fixing the flexible shell that comes into contact with the body can be simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a chair to which the present invention is applied.

FIG. 2 is a bottom perspective view of a seat plate shell.

FIG. 3 is a side view of a seat plate.

FIG. 4 is an enlarged vertical sectional view of the portion of FIG. 3A when the seat is empty.

FIG. 5 is an enlarged vertical cross-sectional view when the user is seated.

FIG. 6 is a longitudinal sectional side view of the chair, wherein (a) is a state in which the seat plate is retracted, and (b) is a side view.
Is when the seat plate is moving forward.

FIG. 7 is a partial longitudinal side view of a conventional chair when not in use.

[Explanation of symbols]

 (1) Chair (2) Leg (3) Fixed shell (4) Seat plate (5) Backrest (6) Desk (7) Occupant (8) Chair (9) Leg (10) Fixed shell (11) Rail (12) ) Seat plate (13) Seat plate shell (14) Engagement hook (15) Cushion (16) Concavo-convex strip

Claims (2)

[Claims] 1. A rail is laid on both left and right sides of a fixed shell fixed to a chair, and a body contact surface of the chair is formed by flexible shells. A fixing device for providing a large number of engaging hooks for movably engaging the rail in the front-rear direction, and operating the fixed shell and the flexible shell according to the weight of the occupant to fix the flexible shell to the fixed shell. A position adjusting device for a body contact surface in a chair, comprising: 2. A fixing device for a flexible shell, comprising: a plurality of concave and convex strips formed on opposing surfaces of a rail of the fixed shell and an engaging hook of the flexible shell, which are oriented in the left-right direction and are arranged close to each other. The device for adjusting the position of a body contact surface in a chair according to claim 1, wherein: