JP2011004925A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which is easily used by a user lame in the leg, can strengthen the arm, is lightweight and easy to carry, is inexpensive and exhibits a partial support to the user who is hard to stand up when standing up.SOLUTION: An end part includes a rotary shaft at a rear end part of an armrest freely horizontally rotatable, a bending arm freely bendably connected that is engaged with the rotary shaft as the armrest moves up and down bends, and roller carriers placed on a backrest are joined to the end part of the bending arm, and move up and down as the end part of the bending arm moves. Moreover, the configuration includes: a pedestal comprising a front rung, a back rung, and side rungs disposed between legs; a vertically moving arm spring-energized upward by the side rungs; an auxiliary arm attached with a footboard jointly rotating with the vertically moving arm; and a seat panel which is rotation fixed at the front rung part of the pedestal and has a back part mounted on the vertically moving arm. When the user is seated, the seat panel becomes horizontal; when the user stands up, load is given to the footboard and the backward of the seat panel is energized upward, so that the user easily stands up.

Description

  The present invention relates to a manual massage chair and a self-supporting chair.

  A lightweight and inexpensive foot-operated massage chair that presses the back and shoulders and squeezes it while stimulating the acupuncture points of the foot with human power to detachably connect the foot-operated activation part to the chair body and step on the foot alternately Proposed. (Patent Document 1)

However, there is an inconvenience that the massage part cannot be moved for a person with reduced mobility.
It is also not suitable for use with the aim of strengthening hand movements.

  Next, as a means for assisting standing up, a hand holding the armrest while holding the armrest of the standing assistance chair with the user's hand while standing and sitting and supporting the user's body with the armrest. Insert the fingertip into the recess formed on the upper surface on the tip side of the armrest, press the switch of the operation desired by the user provided on the bottom of the recess with the fingertip, and based on the pressing operation of the switch, the seat Means for displacing the displacing means and displacing the seat portion on which the user is seated to a state where the user's standing and sitting are assisted are proposed. (Patent Document 2)

However, this means uses an electric motor, is heavy and difficult to move, requires electric power for driving, and is expensive.
There are electric massage chairs and massage chairs that are linked to foot-operated movements, but with a vertical movement of the hands, the shoulders, back, and hips are rotated manually and the massage chairs are alternately movable up and down. No chair has been proposed that lifts the seat with the assistance of your feet.

JP, 2001-104426, A Foot-operated massage chair JP, 2005-533704, A Electric seat lift chair

  The problem to be solved is that it can be used by people with reduced mobility, can strengthen their arms, is lightweight, easy to carry, inexpensive, and assists people who have difficulty starting up. It is a point that demonstrates an effect.

  A revolving arm is provided at the rear end of the elbow, the tip of which rotates freely up and down, and the refraction arm that is refractorably connected to the revolving arm is refracted according to the vertical movement of the elbow. In association with the movement of the tip of the roller, the roller carrier placed on the backrest is moved up and down in connection with the tip of the refracting arm.

  A pedestal composed of a front opening, a rear opening, a side opening, and the like disposed between the legs, a vertical movement arm biased upward by a spring installed on the horizontal opening, and connected to the vertical movement arm. An auxiliary arm to which a tread is attached and a seat plate that is pivotally fixed at a front opening portion of the pedestal and a rear portion is placed on a vertical movement arm, and the seat plate becomes horizontal when seated, When standing up, a load was applied to the tread plate, and the rear of the seat plate was urged upward to make it easy to stand up.

A revolving arm is provided at the rear end of the elbow, whose tip moves freely up and down. In association with the movement of the tip of the roller, the roller carrier placed on the backrest is moved up and down in connection with the tip of the refracting arm.
In addition, the structure includes a pedestal composed of front, rear, and side punches disposed between the legs, a vertically moving arm urged upward by a spring installed on the side shield, and the vertically moving arm An auxiliary arm to which a treadle connected and rotated is attached, and a seat plate pivotally fixed by a front opening portion of the pedestal and having a rear portion placed on a vertical movement arm. When the board was horizontal and stood up, a load was applied to the tread board, and the rear of the seat board was urged upward to make it easy to stand up.

  The chair of the present invention moves a roller bed placed on the backrest up and down by the movement transmitted through the refraction arm by pivoting the tip of the elbow to freely move up and down. But you can use it to strengthen your arm while massaging your back, and it is lightweight, easy to carry, inexpensive, and for those who have difficulty starting up, the auxiliary arm attached to the treadle and a spring bias upward There is an advantage that the effect that the rear portion of the seat plate placed on the vertical movement arm is urged upward at the time of rising to make it easy to rise by cooperation with the vertical movement arm that has been made.

It is the whole view which looked at the chair of this invention from diagonally forward. It is the whole view which looked at the chair of the present invention from the slanting back. It is a side perspective view which shows a motion of a roller carrier. It is sectional drawing of a rotating shaft part against an elbow, and a roller carrier mounting part. It is a figure explaining the operation | movement to which a roller carrier goes up and down in conjunction with an elbow rest. (A) When the elbow rest is moved downward (B) When the elbow rest is moved upward It is explanatory drawing which shows the up-and-down movement of the base part of the chair of this invention. (A) Unattended state (B) State when a person is seated

  It can be used by people with reduced mobility, can strengthen their arms, is lightweight, easy to carry, inexpensive, and has a problem of showing an auxiliary effect when standing up even for people who have difficulty starting up, The problem was solved by connecting the elbow rest and the roller carrier of the backrest frame with a refracting arm, and connecting the tread plate and the vertically moving arm and supporting the rear part of the seating surface with the vertically moving arm.

FIG. 1 and FIG. 2 are front and rear perspective views showing an embodiment of the chair of the present invention.
1 is an elbow rest part. A rotating shaft 2 is provided at the rear end of the elbow rest 1. A refraction arm 3 composed of two members is attached to the rotation shaft 2, and the tip of the refraction arm 3 moves in the vertical direction in conjunction with the rotation of the rotation shaft 2.
The rotary bearing 17 is connected to the roller platform 5. The roller carrier 5 is fitted in the backrest frame 4 so that it can slide up and down.
The roller platform 5 is provided with a plurality of rotating rollers 6.

When a user of this chair sits down on the seat plate 15 and puts his hand on the tip of the elbow 1 and moves the tip of the elbow 1 up and down, the roller platform 5 installed on the back frame 4 is moved along with the movement. Go up and down and massage your back.
The roller carrier 5 is provided with a pair of roller carriers 5 on the back frame 4 in conjunction with the left and right elbow pads 1.

  FIGS. 3A and 3B are views for explaining the movement of the roller carrier 5 up and down in conjunction with the elbow rest 1. The left and right elbow rests 1 and the roller platform 5 can be moved separately, and can be freely moved by the user, such as alternating left and right vertical movements or moving simultaneously.

FIG. 4 is a cross-sectional view of the rotating shaft part and the roller carrier mounting part for the elbow.
A flat plate 24 and the rotary shaft 2 are welded to the rear end portion of the elbow rest 1 on the second rotary shaft, and are fixed to the rear end portion of the elbow rest 1 by a wood screw 23.
The rotary shaft 2 is supported by a bearing 18 in the rotary bearing 17 and can rotate smoothly with respect to the vertical movement of the elbow rest 1. Further, one end portion of the refraction arm 3 is fixed to the rotation shaft 2 by a spring pin 21 and a split pin 22.
The left and right deviation of the refraction arm 3 is fixed by a flat washer 19 and a nut 20 so as not to move from both ends.

Further, the configuration around the roller carrier 5 illustrated in the upper part of FIG. 4 will be described.
A backrest frame 4 is fixed to the legs 7, and a slide groove is provided in the backrest frame 4 in the vertical direction.
In the slide groove, both end portions of the roller carrier 5 are slidably fitted into the slide portion of the back frame 4.
A roller pedestal 16 is attached to the roller carrier 5, and a roller pedestal 16 that holds the rotatable roller 6 is attached to the roller carrier 5.
Some of the rollers 6 are incorporated in the roller pedestal 16 and some are installed directly on the roller carrier 5.

5A and 5B show how the roller pedestal 16 is attached to the roller carrier 5.
The roller pedestal 16 is attached to the roller carrier 5 by a wooden dowel 25 so that the roller 6 can move back and forth.
Similarly, the roller 6 is fixed to the roller base 16 by a wooden dowel 25 so as to be freely rotatable.
The roller pedestal 16 fixed to the roller carrier 5 is installed by changing the length from the lower end of the upper end in the length direction.
As a result, it is possible to make close contact with the user's back.

A description will be given of assisting standing up with reference to FIGS. 1, 2, and 6.
The basic portion is composed of a pedestal composed of a front opening 8, a rear opening 9, and a pair of horizontal openings 10 between the four legs 7.
A seat plate 15 is rotatably attached to the upper end portion of the front opening 8 by a hinge 28.
There is an upper end portion of a vertically moving arm 12 with a caster 26 attached to the tip of the lower surface of the seat plate 15. The vertically moving arm 12 has a through groove in the vertically moving direction and restricts forward and backward movement by a coach bolt 27. Attached.
A lower end portion of the vertically moving arm 12 is rotatably fixed to one end portion of the auxiliary arm 14, and a tread 13 is fixed to the lower end portion of the auxiliary arm 14.
The tread board 13 is installed in a state in which both ends are fixed to a bearing 18 built under the leg 7 so as to be rotatable.
The vertical movement arm 12 is positioned such that the vertical spring arm 12 is always urged upward by the coil spring 11 being set via a side bolt 10 and a coach bolt 27 fixed to the vertical movement arm 12.
FIG. 6A shows a situation where no person is sitting, and the vertical movement arm 12 is always lifted upward by the upward biasing of the coil spring 11, and the seat plate 15 is always in a state where the back side is raised.
6B shows the seat surface position in a state where a person is seated on the chair, and the lower surface of the seat plate 15 is in contact with the upper surface of the pedestal composed of the front collar 8, the rear collar 9, and the pair of lateral collars 10. It is in a state. At this time, the tread plate 13 is in a state where the tip is lifted.
The coil spring 11 connected to the vertical movement arm 12 extends and is biased upward with a larger force.
When the user stands up, the back of the seating surface is lifted by the urging force of the vertical movement arm 12 by moving the waist to the front of the seating surface, so that the user can stand up with a light force without using muscle strength.
At this time, if the foot is placed on the tread board 13, the rising effect is doubled by the lever principle.

The chair of the present invention can be used as a means for strengthening the strength of the elderly and as a tool for rehabilitation exercises for persons with physical disabilities. Furthermore, it can be expected to relieve stiffness in the back and shoulders while strengthening arm strength.
As other actions, the urging effect on the seating surface works and the back side of the seating surface rises, so that it can stand up easily. While having such an effect, it can be used as a chair for a dining table, a drawing room or a study desk.

DESCRIPTION OF SYMBOLS 1 Elbow contact 2 Rotating shaft 3 Refraction arm 4 Backrest frame 5 Roller bed 6 Roller 7 Leg 8 Front opening 9 Rear opening
10 Sideways
11 Coil spring
12 Vertical movement arm
13 tread
14 Auxiliary arm
15 seat plate
16 roller base
17 Rotating bearing
18 bearings
19 flat washer
20 nuts
21 spring pin
22% pin
23 wood screws
24 flat plate
25 wood dowels
26 casters
27 coach bolt
28th

Claims (3)

  A revolving arm is provided at the rear end of the elbow, the tip of which rotates freely up and down, and the refraction arm that is refractorably connected to the revolving arm is refracted according to the vertical movement of the elbow. In accordance with the movement of the tip of the chair, the roller bed placed on the backrest is moved up and down in connection with the tip of the refracting arm.   A pedestal composed of a front opening, a rear opening, a side opening, and the like disposed between the legs, a vertical movement arm biased upward by a spring installed on the horizontal opening, and connected to the vertical movement arm. An auxiliary arm to which a tread is attached and a seat plate that is pivotally fixed at a front opening portion of the pedestal and a rear portion is placed on a vertical movement arm, and the seat plate becomes horizontal when seated, A chair characterized in that a load is applied to the tread board when standing up, and the rear of the seat board is biased upward to make it easy to stand up.   The chair according to claim 1, comprising the structure according to claim 2.

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