JP5021581B2 - wheelchair - Google Patents

Description

  The present invention relates to a wheelchair that can be used as a rocking chair and that can also change a sitting posture.

Conventionally, as a wheelchair that can also be used as a rocking chair, there is one previously proposed by the present applicant (see, for example, Patent Document 1). That is, such a wheelchair includes a vehicle part and a chair part, and the chair part is supported by the vehicle part so that the use form can be changed between a fixed state and a swingable state. In this case, the chair portion can be used as a rocking chair by swinging in the front-rear direction on the vehicle portion. The chair portion is provided with a pair of left and right swing legs formed to bend downward and is provided with a pair of left and right guide / support bodies that guide and support the swing legs. Thus, each swing leg can be fixed on each guide / support, and can also swing freely in the front-rear direction.
JP 2001-129026 A

  However, although the above-described wheelchair can be used as a rocking chair, it cannot be changed to a preferred sitting posture as an easy chair. For example, the chair part cannot be fixed in a state where the chair part is inclined rearward so that the user can easily sit on the chair part.

  In addition, the fixed posture of the chair portion cannot be changed so that the user can easily take off or sit down from the chair portion. For example, the chair part cannot be fixed in a state where the chair part is inclined forward, and the user can easily stand up from the posture of sitting on the chair part and can be separated from the chair part.

Therefore, in the present invention, in a wheelchair comprising a vehicle portion and a chair portion that is supported by the vehicle portion so as to be swingable and fixed in a swingable state, the vehicle portion is U-shaped in plan view. Lower support frame forming piece formed in a shape, a pair of left and right support frame forming pieces standing upright and formed in a side-view gate shape on the left and right sides of the lower support frame forming piece, and both left and right support A wheel support frame is formed in a frame form from an upper connecting piece that extends horizontally between the middle parts of the frame forming pieces and extends in the front-rear direction between the middle parts of the left and right support frame forming pieces. A pair of left and right front swings are mounted on a chair support plate that is stretched in a horizontally long rectangular frame formed by a halfway support piece that is extended and horizontally mounted, and an upper half of the left and right support frame forming pieces. Each of the left and right rear guide grooves is provided with a moving guide groove, and the chair portion extends in the front-rear direction. A pair of seat forming pieces, a backrest forming piece raised above each rear end of the seat forming piece, and a footrest support piece extending downward from each front end of the seat forming piece And an armrest portion forming piece provided in a erected manner between the front portion of the seat portion forming piece and the lower portion of the backrest portion forming piece, and a lower end connecting piece horizontally mounted between the lower end portions of the armrest portion forming piece And a chair part forming frame body formed in a frame form from a connecting piece between rear end parts laid across between rear end parts of the armrest part forming pieces, and at the front part of the seat part forming pieces, A front guide roller support projecting in a projecting manner, and a bearing-shaped guide roller engaged with the front swing guide groove is attached to the front guide roller support, and the seat-forming piece A rear guide roller support that protrudes outward is provided at the rear end of the rear guide roller. A bearing-like guide roller to be engaged with the rear swing guide groove is attached to the support, and the front swing guide groove is formed by extending in the front-rear direction and gradually from the front end portion toward the rear end portion. While the curved portion that rises is formed, the rear swing guide groove is formed to extend in the front-rear direction, and is formed in a curved shape that gradually descends from the front end portion toward the rear end portion. In the swingable state, the wheelchair can be used as a rocking chair by swinging in the front-rear direction, and in a fixed state, the wheelchair can be fixed at any swing position and the fixed posture can be changed. Is intended to provide.

  The present invention is also characterized by the following configuration.

(1) The guide roller support includes a cylindrical support projecting outward from the seat portion-forming piece to the left and a cylindrical support body inserted through the cylindrical support, and the guide roller includes: A fixed side pad that is fitted to the outer peripheral surface of the front end portion of the support body and is stretched on a hook-like fixed side pad support piece provided on the support body, and a cap-shaped movable side provided on the front end portion of the support body The chair part support plate is clamped by the movable pad stretched on the pad support piece, so that the guide roller is stopped and the chair part can be fixed to the vehicle part.

(1) In the present invention according to claim 1, in the wheelchair comprising a vehicle portion and a chair portion that is supported by the vehicle portion so as to be swingable and fixed so as to be changeable in use. Is a lower support frame forming piece formed in a U-shape in plan view, and a pair of left and right support frame forming pieces standing upright and formed side-by-side on the left and right sides of the lower support frame forming piece. A wheel support frame formed in a frame form from an upper connecting piece extending horizontally in the left-right direction between the middle portions of the left and right support frame forming pieces, and the middle of the left and right support frame forming pieces A chair support plate that is stretched in a horizontally long rectangular frame formed by a middle support piece that extends in the front-rear direction between the sections and that is horizontally suspended, and an upper half of the left and right support frame forming pieces. A pair of left and right front swing guide grooves and a pair of left and right rear guide grooves are provided, respectively, and the chair portion extends in the front-rear direction. A pair of left and right seat forming pieces, a backrest forming piece raised above each rear end of the seat forming piece, and a footrest extending downward from each front end of the seat forming piece A supporting piece, an armrest part forming piece provided in a erected shape between the front part of the seat part forming piece and the lower part of the backrest part forming part, and a lower end part horizontally placed between the lower end parts of the armrest part forming piece A chair part forming frame body formed in a frame form from a connecting piece and a connecting piece between rear end parts laid between the rear end parts of the armrest part forming piece, and the front part of the seat part forming piece, A front guide roller support projecting outwardly is provided, and a bearing-like guide roller that engages with the front swing guide groove is attached to the front guide roller support, and the seat portion At the rear end of the formed piece, a rear guide roller support that protrudes outward is provided. A bearing-type guide roller to be engaged with the rear swing guide groove is attached to the end roller support body, and the front swing guide groove is formed to extend in the front-rear direction and from the front end portion toward the rear end portion. The chair portion is formed in a curved shape that gradually rises, while the rear swing guide groove is formed to extend in the front-rear direction and is formed in a curved shape that gradually falls from the front end portion toward the rear end portion. In the swingable state, it can be swung back and forth to be used as a rocking chair, and in the fixed state, it can be fixed at any swinging position and the fixed posture can be changed.

Therefore, when used as a rocking chair, there are the following effects. That is, particularly for elderly people who are hospitalized and who cannot move the wheelchair by themselves, they prefer to use the wheelchair as a rocking chair, which is an incentive to get out of bed. When a wheelchair is used as a rocking chair, the pressure applied to the user's buttocks is dispersed by shaking the chair, so it can be seated for a long time. Improvement and adjustment of the whole body are possible, and a rehabilitation effect of the lower limbs by kicking with his / her leg and swinging the wheelchair is also obtained.
In addition, the front swing guide groove is formed to extend in the front-rear direction and is formed in a curved shape that gradually rises from the front end toward the rear end, and the rear swing guide groove is extended in the front-rear direction. In addition to being formed in a curved shape that gradually descends from the front end portion toward the rear end portion, the user sitting on the chair portion simply moves the upper body, particularly the head, slowly in the front-rear direction. The part can be swung like a rocking chair.

  Further, when the posture is changed to a fixed posture fixed at an arbitrary swinging position (position desired by the user), the following effects are obtained. That is, the chair part is fixed to a state in which the chair part is inclined rearward, and the user can change the seating posture to a user's preferred seating position and can be used as an easy chair. As a result, this point is also an incentive for elderly people to get out of bed. It is possible to fix the chair part to be tilted forward, and to change the fixed position of the chair part so that the user can easily stand up from the posture seated on the chair part and can be separated from the chair part. it can. As a result, the burden of wheelchair separation / sitting is resolved, and wheelchairs are preferably used, and the effects described above are obtained, and the effects are further experienced by the user. A favorable cycle is formed in which wheelchairs are preferably used.

(2) In the present invention according to claim 2, the guide roller support body includes a cylindrical support body projecting leftwardly outward from the seat-forming piece, and a cylindrical support body inserted through the cylindrical support body. The guide roller is fitted to the outer peripheral surface of the distal end portion of the support body, and the fixed side pad stretched on the hook-shaped fixed side pad support piece provided on the support body, and the distal end of the support body The chair roller support plate is clamped by a movable pad stretched on a cap-shaped movable pad support piece provided in the section, thereby stopping the guide roller and fixing the chair section to the vehicle section. Yes.

Accordingly, the guide roller can be stopped by sandwiching the chair support plate between the fixed pad and the movable pad, and the chair can be easily changed to the user's preferred fixed posture on the vehicle. it can.
In addition, a wheelchair having such a structure can be simplified and manufactured at a low cost.

  Embodiments of the present invention will be described below with reference to the drawings.

A shown in FIGS. 1 to 3 is a wheelchair according to the present invention, and the wheelchair A supports the vehicle unit 1 and the vehicle unit 1 so that the use mode can be changed between a swingable state and a fixed state. In the swingable state, the chair portion 2 can be used as a rocking chair by swinging back and forth in the swingable state, and fixed at an arbitrary swing position in the fixed state. The fixed posture can be changed as possible.

As shown in FIGS. 1 to 3, the vehicle unit 1 includes a pair of left and right front wheels 4, 4 on a wheel support frame 3.
And a pair of left and right rear wheels 5 and 5 are attached. The wheel support frame 3 includes a lower support frame forming piece 6 formed in a U-shape in plan view, and a pair of left and right erected on the left and right sides of the lower support frame forming piece 6 in a side view type. Left and right support frame forming pieces 7, 7 and both left and right support frame forming pieces 7, 7
It is formed in a frame form from the upper connecting piece 8 that is horizontally extended between the middle parts.
Reference numerals 9 and 9 are intermediate support pieces that are extended in the front-rear direction and horizontally placed between the middle portions of the left and right support frame forming pieces 7 and 7. The upper connecting piece 8 is placed horizontally. Reference numeral 10 denotes a lower connecting piece that extends horizontally between the front portions of the lower support frame forming piece 6 that is extended in the left-right direction and formed in a U shape in plan view.

Chair portion support plate bodies 11 and 11 are stretched in a horizontally long rectangular frame formed by the upper half of the left and right support frame forming pieces 7 and 7 and the intermediate portion support pieces 9 and 9, and each chair portion support plate A pair of left and right front swing guide grooves 12 and 12 and a pair of left and right rear guide grooves 13 and 13 are formed in the body 11 and 11 in a notch shape.
The front swing guide groove 12 and the rear guide groove 13 are formed in a substantially front-rear line symmetrical shape, and the front swing guide groove 12 is formed by extending in the front-rear direction and from the front end portion to the rear end portion. The rear swing guide groove 13 is formed so as to extend in the front-rear direction, and is formed in a curved shape that gradually descends from the front end portion toward the rear end portion. .

The front wheels 4, 4 are attached to the lower front portions of the left and right support frame forming pieces 7, 7 via a front wheel support piece 14 having a caster structure. Reference numeral 15 denotes a front wheel spindle. The rear wheels 5 and 5 have rear wheel support shafts 17 attached to the lower rear portions of the left and right support frame forming pieces 7 and 7 via boss portions 16.
Reference numeral 18 denotes a rear wheel rotating operation ring, and 19 denotes a rod-like stay. Reference numeral 20 denotes a stop / release operation body attached to the midway support piece 9 so that the rear wheel 5 can be held in the stop state by the stop / release operation body 20 and can also be put into the stop release state. ing.

The chair part 2 has a seat part 22 and a backrest part 2 on a chair part forming frame 21 as shown in FIGS.
3, armrests 24, 24 and footrests 25, 25 are provided. And chair part formation frame 2
1 stands up above the rear ends of a pair of left and right seat portion forming pieces 26, 26 extending in the front-rear direction to form backrest portion forming pieces 27, 27, while each of the seat portion forming pieces 26, 26 is provided. The footrest portion supporting pieces 28, 28 are formed by extending downward from the front end portion, and the armrest portion forming pieces 29, 28 are formed between the front portions of the seat portion forming pieces 26, 26 and the lower portions of the backrest portion forming pieces 27, 27. 29 is installed in an erected shape, and a lower end connecting piece 30 extending in the left-right direction is horizontally placed between the lower end portions of the armrest portion forming pieces 29, 29 and between the rear end portions of the armrest portion forming pieces 29, 29. The connecting piece 31 between the rear end portions extending in the left-right direction is horizontally formed to form a frame. Reference numeral 32 denotes a hand pushing handle formed at the upper ends of the backrest forming pieces 27, 27.

The seat portion 21 is formed with a seat portion forming sheet 33 interposed between a pair of left and right seat portion forming pieces 26 and 26. The backrest portion 23 is formed by interposing a backrest portion forming sheet body 34 between a pair of left and right backrest portion forming pieces 27, 27. The armrest portion 24 is formed by attaching an armrest body 35 to the upper portion of the armrest portion forming piece 29. The footrest portion 25 is formed by being attached to the lower end of the footrest support piece 28 so that the footrest body 36 can be raised and lowered at a storage position where the footrest body 36 is erected and a use position where the footrest body 36 is lying down.

As shown also in FIG. 4, a pair of left and right front guide roller supports 37, 37 project outwardly from the front part of the pair of left and right seat part forming pieces 26, 26 so as to project both sides. 26 and 26, a pair of left and right rear guide roller supports 38 and 38 project outwardly from the rear end of each guide roller support 37, 37, 38, and 38 at the front end thereof. A pair of bearing-like guide rollers 39, 39, 39, 39 as a unit is attached so as to be able to roll around the axis of each guide roller support, and the pair of left and right guide rollers 39, 39, 39, 39 coincide sideways. The chair portion 2 is made swingable by engaging with the front swing guide grooves 12 and 12 and the pair of left and right rear guide grooves 13 and 13.

Thus, as shown in FIG. 5, the user seated on the chair part 2 moves the upper body, in particular, the head slowly in the front-rear direction, so that the chair part 2 is like a rocking chair.
For example, it can be swung within the range of FIGS. Therefore, the lower body, especially
It can be used as a rocking chair even for people with disabilities who do not use force on their legs. Further, in the case of a handicapped person or the like with a little force on the legs, the footrest 36 can be erected and placed in the storage position, and the user can rehabilitate the lower limbs by stepping on the floor with his / her foot. At this time, the rear wheels 5 and 5 are held in a stopped state by the stop / release operation bodies 20 and 20.

Next, since each of the guide roller supports 37, 37, 38, 38 has the same configuration, the front left guide roller support 37 shown in FIG. 4 will be described as a representative. That is, the guide roller support body 37 includes a cylindrical support body 41 that protrudes leftward and outward from the seat forming piece 26, a cylindrical support body 42 that is inserted into the cylindrical support body 41 from the left outer side, The guide roller 39 is fitted to the outer peripheral surface of the distal end portion of the support body 42.

  In addition, the guide roller 39 is provided with a roller stop body 43 as a stop body, and the guide roller 39 is stopped at an arbitrary position of the left front swing guide groove 12 by the roller stop body 43, so that the vehicle portion 1. The chair portion 2 can be fixed to the front.

That is, the roller stopper 43 has a hook-shaped fixed-side pad support piece 44 formed on the outer peripheral surface of the support main body 42 so as to protrude, and is fixed to the left peripheral edge of the fixed-side pad support piece 44 in a ring shape. While the side pad 45 is stretched, a cap-like movable side pad support piece 46 is fitted to the distal end portion of the support body 42, and a ring-like movable side pad 47 is attached to the right peripheral edge of the movable side pad support piece 46.
And the pads 45 and 47 are arranged with the chair support plate 11 forming the left front swing guide groove 12 facing each other. Then, the movable-side pad support piece 46 is brought close to the fixed-side pad support piece 44 side, and the chair portion support plate 11 is sandwiched between the pad support pieces 46 and 44 via both pads 45 and 47, whereby the left side The guide roller 39 is stopped at an arbitrary position of the front swing guide groove 12 so that the chair portion 2 can be fixed to the vehicle portion 1.

As shown in FIGS. 2 to 4, the left armrest portion 24 of the chair portion 2 is provided with a fixing / releasing operation body 48 for fixing / releasing the chair portion 2 to / from the vehicle portion 1. 48 is linked to each roller stop body 43 and operates the fixing / releasing operation body 48 so that the seating posture of the chair portion 2 can be appropriately changed to any desired position.

That is, the fixing / releasing operation body 48 lays a support shaft 50 with its axis lined in the left-right direction in the operation box 49 and extends the base end of the operation lever 51 extending vertically to the outer end of the support shaft 50. It is attached and can be rotated between a position where the operation lever 51 is tilted forward and a position where the operation lever 51 is erected upward, and the support shaft 50 has four wires 53, 53 via a link mechanism 52. , 53,5
3, and the distal ends of the wires 53, 53, 53, 53 are linked to the movable pad support piece 46 of each roller stop 43 through the cylindrical support body 41 and the cylindrical support body 42. is doing. Reference numeral 54 denotes an elastic biasing body such as a leaf spring that elastically biases the movable pad support piece 46 away from the chair support plate 11, 53 a is an outer wire, and 53 b is an outer wire 5.
3a is an inner wire slidably inserted in 3a.

In this way, when the operation lever 51 is rotated so as to fall forward, the inner wire 53b of each wire 53 is pulled, and the movable pad support piece 46 becomes the chair portion support plate 1.
While moving to 1 side, the chair part support plate body 11 is pinched | interposed in cooperation with the fixed side pad support piece 44, each guide roller 39 is stopped, and the chair part 2 is fixed to the vehicle part 1. FIG. When the operation lever 51 is rotated so as to stand up, the inner wire 53b of each wire 53 is relaxed and the movable pad support piece 46 is moved by the elastic biasing member 54 to the chair portion support plate. Body 1
1, the guide rollers 39 are free to roll and move, and from the vehicle portion 1 to the chair portion 2.
Unpin.

At this time, the operation of the operation lever 51 can be appropriately performed in an arbitrary swinging posture of the chair portion 2, for example, from the normal posture shown in FIG. 5A to FIG. 5B. Thus, by fixing the chair part 2 to the state inclined backward, it is possible to change the seating posture to the user's preferred seating position so that the user can easily sit on the chair part 2, and use it as an easy chair. Can do. Further, as shown in FIG. 5 (c), by fixing the chair portion 2 to the forwardly inclined state, the user can easily stand up from the posture of sitting on the chair portion 2 and be separated from the chair portion 2. The fixed posture of the chair part 2 can also be changed so that it can sit down. The rear wheels 5, 5
Is held in a stopped state by the stop / release operation bodies 20 and 20.

  FIG. 6 is an explanatory view of the sitting posture of the chair portion 2 of the wheelchair A as another embodiment. The wheelchair A has a basic structure similar to that of the wheelchair A according to the above-described embodiment, but in the above-described embodiment, the footrest portions 25 and 25 provided in the chair portion 2 are replaced by the vehicle portion in the present embodiment. 1 is greatly different in that it is provided on the left and right support frame forming pieces 7. And, the rear wheel 55 of the caster structure is provided in the lower rear part of the left and right support frame forming pieces 7, 7, the rear wheel support shafts 17, 17 of the rear wheels 5, 5 are brought closer to the center of gravity of the chair part 2 It is also different in that the stability of the chair part 2 is increased. FIG. 6 is an explanatory diagram with a simplified structure, and the structures of the stopping / releasing operation body 20, the roller stopping body 43, the fixing / releasing operation body 48, etc., which are the same as those in the above embodiment, are shown. Not.

  In this way, as shown in FIG. 6, the user sitting on the chair portion 2 depresses the footrest 36 that has been lying down to the use position with his / her foot, so that the chair portion 2 is like a rocking chair, for example, It can be swung within the range of FIGS. Therefore, the rehabilitation effect of the lower limb is particularly high for the user. At this time, the rear wheels 5 and 5 are held in a stopped state by the stop / release operation bodies 20 and 20. Further, by operating the fixing / releasing operation body 48, the seating posture of the chair portion 2 can be appropriately changed to any desired position.

The perspective view of the wheelchair concerning this invention. The side view of the wheelchair. The top view of the wheelchair. A partially cutaway plan view of a roller stop. The sitting posture explanatory drawing of a chair part. The sitting posture explanatory drawing of the chair part provided in the wheelchair as other embodiments.

Explanation of symbols

A Wheelchair 1 Car part 2 Chair part 3 Wheel support frame 4 Front wheel 5 Rear wheel

Claims (2)

In a wheelchair comprising a vehicle portion and a chair portion that is supported by the vehicle portion in a swingable state and a fixed state so that the use form can be changed,
The vehicle part is
A lower support frame forming piece formed in a U shape in plan view;
A pair of left and right support frame forming pieces that are left and right formed on the left and right side portions of the lower support frame forming piece and are erected in a side view type, and
An upper connecting piece that extends horizontally between the left and right support frame forming pieces and extends horizontally
A wheel support frame formed in a frame form from
In a horizontally long rectangular frame formed by a middle part supporting piece that extends in the front-rear direction between the middle parts of the left and right support frame forming pieces, and the upper half of the left and right support frame forming pieces. A pair of left and right front swing guide grooves and a pair of left and right rear guide grooves are provided on the chair support plate that is stretched on each,
The chair part is
A pair of left and right seat forming pieces extending in the front-rear direction;
A backrest forming piece raised above each rear end of the seat forming piece;
A footrest support piece extending downward from each front end of the seat-forming piece;
An armrest portion forming piece provided in a spanning manner between the front portion of the seat portion forming piece and the lower portion of the backrest portion forming piece;
A lower end connecting piece laid across the lower end of the armrest forming piece,
A chair part forming frame formed in a frame form from a connecting piece between rear end parts laid between the rear end parts of the armrest part forming pieces,
In the front portion of the seat portion forming piece, a front guide roller support body is provided so as to protrude outwardly,
A bearing-type guide roller to be engaged with the front swing guide groove is attached to the front guide roller support,
At the rear end of the seat forming piece, a rear guide roller support that protrudes outward is provided,
A bearing-type guide roller that is engaged with the rear swing guide groove is attached to the rear guide roller support,
The front swing guide groove is formed to extend in the front-rear direction and is formed in a curved shape that gradually rises from the front end portion toward the rear end portion,
The rear swing guide groove is formed to extend in the front-rear direction, and is formed in a curved shape that gradually falls from the front end portion toward the rear end portion,
In the swingable state, the chair portion can be used as a rocking chair by swinging in the front-rear direction, and in the fixed state, the fixed posture can be changed so that it can be fixed at any swing position. A featured wheelchair. The guide roller support body includes a cylindrical support body that protrudes leftward from the seat forming piece, and a cylindrical support body that is inserted through the cylindrical support body,
The guide roller is fitted to the outer peripheral surface of the front end portion of the support body,
A chair by a fixed side pad stretched on a hook-shaped fixed side pad support piece provided on the support body, and a movable side pad stretched on a cap-like movable side pad support piece provided at the tip of the support body The wheelchair according to claim 1, wherein the guide roller is stopped by sandwiching a part support plate and the chair part can be fixed to the vehicle part.

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