JP2010148683A - Wheelchair for office work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheelchair on which an office worker having a lower-limb handicap moves smoothly when working in the office, more preferably, he or she can easily transfer to a usual wheelchair. <P>SOLUTION: A leg body 4 is composed of a support base 9 supporting a seat body 2 and a pair of right and left side leg rods 10 mounted on each right and left end of the support base 9, and each side leg rod 10 comprises a front leg rod 11 extending forward and a rear leg rod 12 extending backward, and an electric unit 20 is hung with an electric wheel for contacting a floor, and the electric unit is positioned in a space 17 between the front leg rod 11 and the rear leg rod 12 at the lower side of the support base 9, and the electric unit 20 is attached to the support base 9 for controlling the drive of the wheel. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an office wheelchair provided with an electric unit for allowing self-propelled movement on a floor surface of an office or the like and enabling a disabled person to perform work comfortably.

In the office / work space such as an office or a work place, when a disabled person who uses a general wheelchair which is generally widely used performs business, it is currently transferred from the normal wheelchair to an office chair.
Moreover, in order for a disabled person to be able to move smoothly, an electric wheelchair that can freely run on a floor surface is used (see Patent Documents 1 and 2).

  In general, in the case of a person with a disability in the lower limb, it is difficult to bend the foot short, so it is desirable that the chair can be seated with the leg extended long.

However, the electric wheelchairs described in Patent Documents 1 and 2 cannot be used by disabled persons with their legs extended.
Moreover, since the rear wheel is larger than the front wheel made of casters, the width of the chair protruding backward is large, and it is difficult to use it as a business wheelchair in a narrow office / work space.

  On the other hand, the applicant of the present application is provided with a support base for supporting the seat body on which the seat surface portion of the cushion body is provided, so that a disabled person can sit with the legs extended long. It consists of a pair of left and right side leg rods attached to each end in the left and right direction, and this side leg rod is a front leg rod with casters that tilts downward toward the front, and the front and rear direction than this front leg rod The ridges of the front and rear legs in the left and right side legs are formed integrally with the rear legs of the casters with the casters descending to the rear with the dimensions of the length increased and formed into a mountain shape in the shape of "H" in the side view. Has proposed a low-seat-type wheelchair with a low center of gravity (see Patent Document 3).

However, since the office wheelchair described in Patent Document 3 does not include electric means, even if the leg can be moved by a caster, a worker who has a disability in the lower limb remains in the sitting position. It is difficult to move the wheelchair freely.
In addition, when moving to a normal wheelchair, if the wheelchair moves, there is a risk of falling from the seat, and even during work, if the wheelchair moves, the sitting posture is disturbed, making it difficult to work There was a problem.
JP 2000-135253 A Japanese National Patent Publication No. 7-507223 JP 2007-330338 A

  In view of the above-mentioned present situation, the present invention allows an electric unit to be attached to a ready-made wheelchair, and can easily assist movement by a caster, so that a worker with a disability in a lower limb can work. So that it can be moved freely and smoothly in the sitting position, and more preferably, the sitting position can be stabilized and can be easily transferred to a normal wheelchair or the like. The purpose is to provide an office wheelchair.

  The above-described problems are solved by the invention having the following configuration, as described in each claim in the section “Claims”.

(1) An office wheelchair that supports a backrest and a seat on a leg provided with casters and is movable with respect to a floor surface, the leg being supported by a support base that supports the seat; A pair of left and right side leg rods attached to the left and right ends of the support base, each front leg rod extending forward and each rear leg extending rearward And an electric unit on which electric wheels are suspended so as to be able to contact the floor, and is located in the space between the front leg rod and the rear leg rod, and The electric unit is attached to the support so that the driving of the wheel can be controlled.

(2) In the above item (1), a pair of left and right electric units are provided so that the wheels of each electric unit can be driven and controlled independently of each other.

(3) In the above item (1) or (2), the electric unit includes a wheel, a geared motor that drives the wheel, and a control device that controls the geared motor.

(4) In any one of the above items (1) to (3), the operation unit of the control device is provided on at least one front end portion of the armrest provided on the left and right of the seat body.

(5) In any one of the above items (1) to (4), the left-right support in which the pair of left and right electric units are detachably suspended by a pair of left and right connecting members attached to the left and right ends of the support base. Attach to the left and right ends of the member.

(6) In any one of the above items (1) to (5), the left and right side legs attached to the support base straddle between the lower ends of the front legs, and are substantially backward-shaped in a plan view toward the front. A footrest plate having casters is attached to the footframe.

According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the leg body is composed of a support base that supports the seat body and a pair of left and right side leg rods that are attached to the left and right ends of the support base. A front leg rod extending toward the front and a rear leg rod extending toward the rear, and an electric unit on which an electric wheel is suspended so as to contact the floor The electric unit is mounted on the support base so that it is positioned in the space between the front leg rod and the rear leg rod and the drive of the wheel can be controlled. The wheelchair can be easily attached to the wheelchair, and the movement by the caster can be easily assisted.
Thereby, when the office worker who has a disorder | damage | failure in a lower limb performs work, it can move freely and smoothly with a seating posture.

  According to the second aspect of the present invention, a pair of electric units is provided on the left and right sides, and the wheels of each electric unit can be driven and controlled independently of each other. In particular, efficient movement is possible in a narrow work space.

According to the invention described in claim 3, since the electric unit is composed of a wheel, a geared motor that drives the wheel, and a control device that controls the geared motor, the chair is lifted when the geared motor is turned off. The braking state can be maintained.
Accordingly, the sitting posture can be stabilized, comfortable work can be performed, and transfer to a normal wheelchair or the like can be performed safely.

  According to the fourth aspect of the present invention, since the operation unit of the control device is provided at the front end portion of at least one of the armrests provided on the left and right sides of the seat body, the remote control of the electric unit is easily performed at the hand of the chair. be able to.

  According to the invention described in claim 5, the pair of left and right electric units is attached to the left and right ends of the left and right support members that are detachably supported by the pair of left and right connecting members attached to the left and right ends of the support base. Therefore, attachment to the leg can be easily performed, and lowering the center of gravity of the entire chair can be promoted by hanging the electric unit below the support base.

  According to invention of Claim 6, while extending between the lower end parts of the front leg rod in the right and left side leg rods attached to the support base, the substantially U-shaped foot frame facing backward is extended forward. Since the footrest plate provided with casters is attached to the foot frame, the seating posture can be stabilized and the seated chair can be moved smoothly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a front perspective view of an office wheelchair according to an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a front view, and FIG. 4 is a longitudinal sectional view taken along line IV-IV in FIG. FIG. 5 is a plan view showing the main part of the leg body with a part of the seat surface part cut away, FIG. 6 is an enlarged cross-sectional view of the main part showing the mounting state of the electric unit in the circle VI of FIG. 4, and FIG. It is a disassembled perspective view of the electric unit attached to a leg.

  As shown in FIGS. 1 to 3, the office wheelchair 1 according to the present invention includes a seat body 2, a seat surface portion 3 including a cushion body mounted on the seat body 2, and the seat body 2 in a pivotally attached state. Of the leg support 4, the back support frame 5 pivotally attached to the leg 4 so that the leg 4 can be tilted in the front-rear direction so as to stand upright in a tilted state, and the back support frame 5. A backrest 7 comprising a cushion attached to the front via a mesh-like backrest plate 6 and a pair of left and right substantially rhombus-shaped left and right sides attached so as to be positioned on the left and right sides of the seat 3 Armrests 8 and 8.

The leg 4 includes a support base 9 that supports the seat body 2 and the backrest support frame 5, and a pair of left and right side leg rods 10 and 10 attached to the left and right ends of the support base 9. ing.
The front lower end 5a of the backrest support frame 5 is pivotally mounted between the left and right end portions 9a, 9a of the support base 9 in the leg 4, that is, below the front side of the seat body 2.

  Each side leg rod 10 is formed from a front leg rod 11 extended downward and inclined toward the front, and an extended rear leg rod 12 inclined downward toward the rear, and is formed in a “H” character form in a side view. So that the stability of the chair is ensured when the backrest 6 is tilted backward by making the front and rear dimensions of the rear leg collar 12 longer than the front legs 11. It has become.

  As shown in FIG. 4, the left and right side leg rods 10 have a mountain-shaped top portion of a “H” shape in a side view formed by a front leg rod 11 and a rear leg rod 12 as an attachment base 10 a, and this attachment base 10 a is used as a support base 9. Each of the left and right end portions 9a is attached by pivoting.

At the front end portions of the left and right side leg rods 10, a substantially rearward U-shaped foot frame 13 projecting horizontally toward the front extends between the front end portions 11 a and 11 a of the left and right front leg rods 11 and 11. Further, a footrest plate 14 is attached to the foot frame 13.
A pair of left and right casters 15, 15 are attached to the lower surface of the footrest plate 14, and these casters 15, 15 are attached to the rear end portions 12 a, 12 a of the left and right rear leg rods 12, 12. Along with the pair of left and right casters 16 and 16 attached thereto, the wheelchair 1 can move on the floor F under the main load of the chair 1.

  As shown in FIG. 5, the front leg rods 11 and the rear leg rods 12 of the left and right side leg rods 10, 10 are expanded outwardly in a frontal “C” shape and a rearward “C” shape, respectively. Further, the wheelchair 1 is bent outwardly with the mounting base 10a as the center, thereby improving the positional stability of the wheelchair 1.

In the wheelchair 1 of the present embodiment, the front lower end 5a of the backrest support frame 5 is pivotally attached to the left and right ends of the support base 6 of the leg body 4 below the seat body 2 near the front. Therefore, the radius of rotation from the pivoting portion to the upper ends of the backrest support frame 5 and the backrest 7 becomes large, and the backrest 7 can be largely tilted rearward at a small rotation angle, and the rearward when rearwardly tilted. The projecting dimension to becomes smaller.
The left and right side leg rods 10 in the leg body 4 are extended to be inclined forward and downward toward the front, and the extended rear leg rod 12 is inclined to be inclined downward and rearward. Since it is integrally formed in a hiragana shape in a side view, the backrest 7 can be greatly tilted backward without increasing the height of the leg 4, so that it can be seated in an easy posture. A wheelchair 1 having a low center of gravity and a low seat height can be provided.
The front leg rods 11 and the rear leg rods 12 of the left and right side leg rods 10 in the leg body 4 are expanded outward so as to form a “C” shape in a plan view, and the front and rear dimensions of the rear leg rod 12 are set to the front leg rods. Since it is longer than 11, the stability of the chair is high and the stability when the backrest 7 is tilted backward is also excellent.
In addition, since the left and right front leg pads 11 are expanded outward, the width dimension of the footrest plate 14 in the left-right direction can be increased, and the lower limbs of the seated person can be stably placed. .

  As shown in FIGS. 2 and 4, below the support base 9 of the leg body 4, a seat 17 is formed in a space 17 formed between the front leg rod 11 and the rear leg rod 12 of the left and right side leg rods 10. A pair of left and right electric units 20, 20 controlled by an operation lever 19 of an operation unit 18 attached to at least one front end 8 a of armrests 8, 8 provided on the left and right of the body 4 are disposed. Yes.

As shown in FIGS. 6 and 7, the left and right electric units 20 include a geared motor 21, an electric wheel 22 driven by the geared motor 21, and a controller (control device) 23 that controls the geared motor 22. It is configured.
The left and right wheels 22 can be driven and controlled independently of each other by the operation lever 19 of the operation unit 18 that operates the geared motor 21, and the suspension device 24 described later causes the wheels 22 to be On the surface F, it is attached to the support base 9 of the leg body 4 so that it can be suspended in a good manner.

  The suspension device 24 includes a pair of left and right connecting members 26 detachably attached to left and right end portions 9 a of the support base 6 by two front and rear bolts 25, 25, and left and right connecting members 26. And a pair of left and right electric units 20 are attached to the left and right end portions 27a of the support member 27, respectively.

  The support member 27 includes a top plate 28 attached to the connection member 26 at the left and right end portions 27a in a side view from the left and right directions, and front and rear side plates 29 and 29 depending from the front and rear edges of the top plate 28. An L-shaped bracket 31 that suspends the electric unit 20 is mounted on the lower surface of the upper surface plate 28 in the U-shaped space 30 with a bolt 32 and a nut 33. Are detachably attached to each other.

The controller 23 is mounted on the equipment mounting table 35 attached via the bracket 34 on the rear surface of the rear side plate 29 of the support member 27 in the suspension device 24 and is detachably assembled.
Further, the electric unit 20 and the controller 23 are connected to a battery 37 placed on a power supply base 36 attached to one side of the seat body 4 in the left-right direction, so that power is supplied.

  Each wheel 22 in the left and right electric units 20 cooperates with the caster 16 of the rear foot rod 12 and the caster 15 of the footrest plate 14 that receive the main load of the wheelchair 1 in a state before driving, and In addition to receiving the load, it is preferable that the main load of the wheelchair 1 is received instead of the caster 16 of the rear leg pad 12 and the caster 15 of the footrest plate 14 during driving.

  In the above embodiment, the main load of the wheelchair 1 is applied to the casters 16 attached to the rear end portions 12a of the rear leg rods 12 of the left and right side leg rods 10 in the leg 4 and the footrest plate 14, respectively. For example, when the footrest plate 14 is removed and used, the front end portion 11a of the left and right front leg rods 11 is similar to the rear end portion 12a of the left and right rear leg rods 12 when used. A small caster (not shown) may be attached for use.

It is a front view perspective view of the office wheelchair of one embodiment in the present invention. It is a side view. It is a front view. It is a longitudinal cross-sectional view in the IV-IV line of FIG. It is a top view which shows the principal part of a leg body by notching a part of seating surface part. FIG. 5 is an enlarged cross-sectional view of a main part showing an attachment state of the electric unit in a circle VI in FIG. 4. It is a disassembled perspective view of the electric unit attached to a leg.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Office wheelchair 2 Seat body 3 Seat surface part 4 Leg body 5 Back support frame 5a Front lower end 6 Backrest board 7 Backrest 8 Armrest 8a Front end part 9 Base 9a End part 10 Side leg pad 10a Mounting base 11 Front leg pad 11a Front end 12 Rear leg 12a Rear end 13 Foot frame 14 Footrest plate 15 Caster 16 Caster 17 Space 18 Operation unit 19 Operation lever 20 Electric unit 21 Geared motor 22 Wheel 23 Controller (control device)
24 Suspension device 25 Bolt 26 Connecting member 27 Support member 27a Left and right end portion 28 Upper surface plate 29 Side surface plate 30 U-shaped space 31 Bracket 32 Bolt 33 Nut 34 Bracket 35 Equipment mounting table 36 Power supply table 37 Battery F Floor surface

Claims (6)

An office wheelchair that supports a backrest and a seat on a leg provided with casters and is movable relative to a floor surface,
The leg body includes a support base that supports the seat body and a pair of left and right side leg rods attached to the left and right ends of the support base, and the side leg rods are extended forward. And an electric unit on which electric wheels are suspended so as to be able to come into contact with the floor. An office wheelchair characterized by being mounted on a support base so as to be positioned in a space between a heel and a rear leg heel and to control driving of wheels.   The office wheelchair according to claim 1, wherein a pair of left and right electric units is provided, and the wheels of each electric unit can be driven and controlled independently of each other.   The office wheelchair according to claim 1 or 2, wherein the electric unit includes a wheel, a geared motor that drives the wheel, and a control device that controls the geared motor.   The office wheelchair according to any one of claims 1 to 3, wherein an operation unit of the control device is provided at at least one front end portion of an armrest provided on the left and right of the seat body.   The pair of left and right electric units are attached to the left and right ends of a left and right support member detachably supported by a pair of left and right connecting members attached to the left and right ends of the support base, respectively. The listed office wheelchair.   A front U-shaped foot frame extending from the front to the front of the left and right side foot rods attached to the support base is extended to the front, and the foot frame is provided with casters. The office wheelchair according to any one of claims 1 to 5, wherein a footrest plate is attached.

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