JP2001275776A - Legless chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a legless chair which enables a physically challenging person with handicapped legs to sit down on the chair and to stand up by themselves without anybody's assistance. SOLUTION: This legless chair is provided with a frame 1 for an upper receptacle, which has a seat on its upper surface, a frame 5 for lower receptacle, whose bottom is placed on the floor, a material 6 for linking, which supports the frame 1 for the upper receptacle in a manner that the frame 1 can move up and down and is located between the frame 1 and frame 5, and an airbag 7 powered by the material 6 for linking, and a manual air-pump 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair.

[0002]

2. Description of the Related Art Chairs have been widely used in ordinary households for a long time, and in inns and Japanese-style banquet rooms.
It is a regular item, and recently, some have a function such as a rotary type and a reclining type.

[0003]

However, none of the conventional seat chairs has a lifting function. for that reason,
People with disabilities in the lower limbs, such as knees, need help from a third party when sitting in or getting up from a chair.

[0004] Therefore, an object of the present invention is to provide a seating chair which enables a person with a lower limb disability to sit on his own or stand up without needing the help of a third party. And

[0005]

In order to achieve the above object, a chair according to the present invention comprises an upper frame having a seating portion on an upper surface, and a lower frame having a bottom surface mounted on a floor. And a link member for supporting the upper frame so as to be able to move up and down, and an airbag operated by a manual air pump.

A mechanical jack for raising and lowering the upper frame is provided between an upper frame having a seating portion on an upper surface and a lower frame mounted on a floor with a bottom surface. Was.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments of the present invention.

FIG. 1 is a front view of a seat chair showing an embodiment, FIG. 2 is a side view, FIG. 3 is a front view of a main part in a state where a seating portion is raised, and FIG. , In these figures,
Reference numeral 1 denotes an upper case frame formed in a rectangular shape, having a seating portion 2 having a built-in cushion material on an upper surface thereof, and a rear portion thereof.
A backrest 3 is erected, and armrests 4 and 4 are attached to both left and right sides. Reference numeral 5 denotes a rectangular lower frame, the bottom surface of which is placed on a floor (not shown).

Between the upper frame 1 and the lower frame 5, a link member 6 for supporting the upper frame 1 so as to be able to move up and down and an airbag 7 operated by a manual air pump 16 are provided. By operating a lever-type handle 8 provided on the side of the lower casing 5, air is supplied to the airbag 7, and the upper casing 1 can be raised.

The link member 6 is composed of a pair of cross links 9 and 10 which cross each other. The link member 6 is provided in a pair before and after the upper frame 1 and the lower frame 5. One end of each of the cross links 9 and 10 is pivotally connected to the front edge and the rear edge of the upper casing 1 by pin shafts 11 and 11, respectively, and the other end is connected to the front and rear edges of the lower casing 5 respectively. , Respectively, are pivoted by pin shafts 12,12.

At the intersection of the two cross links 9, 10,
A guide pin 13 fixed to one cross link 9 is slidably fitted into an elongated guide hole 14 formed in the other cross link 10. With such a configuration,
In response to the vertical movement of the upper frame 1, the guide pins 13 slide freely in the guide holes 14, and the upper frame 1 moves up and down while maintaining a horizontal state.

The airbag 7 is provided on the side of the lower frame 5 and is connected to a pressure tank 17 attached to an air pump 16 via a pipe 15, and the air pump 16 is connected to the handle 8. . Specifically, a sliding pin 20 fixed to the distal end of a shaft 19 of the air pump 16 is slidably inserted into a long hole 18 formed at the base end of the handle 8, and A support shaft 22 inserted through a shaft hole (not shown) opened at a predetermined distance from the lower frame 18 is attached to the lower frame 5.
The handle 8 is fixed to a support plate 21 erected on the side of the handle 8 and is swingably supported.

[0013] The handle 8 responds to a change in the sitting position.
It is a telescopic double structure whose length can be adjusted, and the occupant operates the handle 8 back and forth to activate the air pump 16 to supply air into the airbag 7,
The upper frame 1 can be raised to the uppermost position shown in FIGS.

On the other hand, an exhaust valve provided on the side of the upper casing 1
23 is connected to the airbag 7 via a pipe 24. Therefore, by operating the cock 25 of the exhaust valve 23, the air in the airbag 7 can be discharged, and the upper frame 1 can be lowered to the lowest position as shown in FIGS. Since the airbag 7 becomes thinner in the folded state, there is an advantage that the height H of the seat 2 at the lowermost position can be reduced (see FIG. 2). 3 and 4,
The state where the upper casing 1 has been moved to the lowermost position is indicated by a two-dot chain line.

In the chair constructed as described above, when a person with a disability in the lower limb sits, the upper frame 1 is raised to the uppermost position by operating the handle 8 by himself. You can sit comfortably in position.
After seating, the cock 25 of the exhaust valve 23 is operated to lower the upper frame 1 to the lowermost position, thereby obtaining a seating posture.

When leaving the seat, the occupant may operate the handle 8 again to raise the upper frame 1 to the uppermost position, at which position the occupant's waist is lifted. Therefore, even a person with a disability in the lower limbs can easily stand up and exit. Before leaving the seat, the cock 25 of the exhaust valve 23 may be operated to lower the upper frame 1 to the lowest position.

As described above, the seated person can raise and lower the chair by himself without any need for the help of a third party when sitting down or leaving the seat. Therefore, even a person with a lower limb disability can freely sit and leave his or her own.

5 and 6 show another embodiment. In this case, a mechanical jack is provided between the upper casing 1 and the lower casing 5.
31 are provided. The mechanical jack 31 comprises a pair of front and rear link members 32, 32 combined with a screw shaft 33, and the link member 32 is a pair of links 34, 35 and 36, 37 pivotally connected to each other. And its link member 32
However, in the front part and the rear part of the upper case frame 1 and the lower case frame 5, respectively,
A pair is provided. The other points are the same as those in the previous embodiment, and the illustration and description are omitted (FIG. 1).
reference).

More specifically, the link member 32 provided at the front portion
For one end of the upper link 34, 36, one end of the lower link 35, 37 is pivotally attached to a bracket 38 attached to the front bottom surface of the upper casing 1, and one end of the lower link 35, 37 is connected to the upper front face of the lower casing 3. Is pivotally mounted on a bracket 39 attached to the bracket. Similarly, for the link member 32 provided at the rear, the upper link
One end of each of the brackets 34 and 36 is pivotally connected to a bracket 40 attached to the rear bottom surface of the upper casing frame 1, and one end of the other link 35 or 37 is connected to a bracket 41 attached to the rear top surface of the lower casing frame 5.
Is pivoted to.

The other ends of the links 34, 35 and 36, 37 are rotatably connected to each other, and the front and rear pivots 42 and 42 are connected in the front-rear direction. And the front pivot portion 43 and the rear pivot portion 43 are connected by a connection shaft 45 disposed in the front-rear direction.

Then, at the center of the connecting shafts 44 and 45,
A nut member (not shown) is fixed to each,
A screw shaft 33 is screwed into the two nut members in a crosswise manner, and a handle 46 is attached to one end of the screw shaft 33 extending to the side of the seat, and a seated person operates the handle 46. Thus, the upper casing 1 can be moved up and down with a small operation force. In FIGS. 5 and 6, the state where the upper casing 1 is moved to the lowermost position is indicated by a two-dot chain line.

With such a structure, by rotating the handle 46, the connecting shafts 44 and 45 can be moved closer to and away from each other.
The upper frame 1 can be moved up and down in a horizontal state. Therefore, as in the previous embodiment, even a seated person with a lower limb disability does not need the help of a third party,
You can sit down and leave without any inconvenience.

[0023]

According to the first aspect of the present invention, the airbag 7 operated by the manual air pump 16 is provided between the upper casing 1 and the lower casing 5, so that the occupant can operate the air pump 16 with ease. By operating and supplying air to the airbag 7, the upper casing 1 can be raised. Therefore, even a person with a lower limb disability does not need the help of a third party, and the seating portion 2
Can be freely seated at the position where is raised. On the other hand, at the time of leaving the seat, the driver can leave the seat without difficulty at the raised position.

In the folded state of the airbag 7,
Since it becomes thin, there is an advantage that the height H of the seating portion 2 at the lowermost position can be reduced.

(According to claim 2) Upper case 1 and lower case 5
Since the mechanical jack 31 is provided between the user and the user, by operating the mechanical jack 31, even a person with a lower limb disability can remove the seating portion 2 without needing the help of a third party. At the raised position, the user can freely sit. On the other hand, at the time of leaving the seat, the driver can leave the seat without difficulty at the raised position.

Further, the mechanical jack 31 simplifies the configuration and can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view.

FIG. 3 is a front view of a main part in a state where a seating portion is raised.

FIG. 4 is a side view of a main part.

FIG. 5 is a front view of a main part of another embodiment in a state where a seating portion is raised.

FIG. 6 is a side view of a main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper frame 2 Seating part 5 Lower frame 6 Link member 7 Airbag 16 Air pump 31 Mechanical jack

Claims (2)

[Claims] An upper frame 1 having a seating portion 2 on an upper surface and a lower frame 5 whose bottom surface is placed on a floor surface for supporting the upper frame 1 so as to be able to move up and down. A seat member provided with a link member 6 and an airbag 7 operated by a manual air pump 16. 2. A mechanical system for raising and lowering the upper case frame 1 between an upper case frame 1 having a seating portion 2 on an upper surface and a lower case frame 5 whose bottom surface is placed on a floor surface. A seat chair provided with a jack 31.