JP4912664B2 - Wheelchair with pivot arm - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a wheelchair with a rotating arm that can easily move a wheelchair on which a person being assisted is placed even when going up and down a slope or in an uneven place such as a gravel road.

A wheelchair has been widely used as a means of movement when a person who is incapacitated or who needs assistance due to illness or the like moves. By the way, normally, when an assistant moves a wheelchair in which a person being assisted is sitting, the assistant holds the handle provided at the rear of the wheelchair and pushes the wheelchair to move.
However, when climbing up and down the slope or in places with irregularities such as gravel roads, it is difficult to apply force simply by grasping the handle, and it is difficult to smoothly move the wheelchair on which the person being assisted sits.
Therefore, an electric wheelchair that can be moved by a drive source such as a motor has been proposed. Since this electric wheelchair moves with the driving force of a motor or the like, it can move smoothly when going up and down the gradient, but it is still difficult to move in places with unevenness such as gravel roads.
JP 2004-148083 A JP 2005-198711 A

  The present invention has been made in view of the above facts, and it is possible to smoothly move a wheelchair in which a person being assisted is sitting on an ascending / descending slope or an uneven surface such as a gravel road. A wheelchair with a moving arm is provided.

The invention according to claim 1 is a wheelchair body, and is attached to the wheelchair body so as to be pivotable in the front- rear direction of the wheelchair body, and when turned in the front direction of the wheelchair body, an assistant can enter inside. A U-shaped pivot arm, a pivot arm mounting plate that is disposed on both sides of the wheelchair body, and rotatably supports the pivot arm, and is pivotable on the pivot arm mounting plate. And a pivot arm lock lever that is attached and holds the pivot arm .
The invention according to claim 2 is a wheelchair body, and is attached to the wheelchair body so as to be pivotable in the front-rear direction of the wheelchair body, and when turned in the front direction of the wheelchair body, an assistant can enter inside. A U-shaped pivot arm, a pivot arm mounting plate that is disposed on both sides of the wheelchair body, and rotatably supports the pivot arm, and is pivotable on the pivot arm mounting plate. A pivot arm lock lever that is attached, and a pivot arm accommodation notch that is formed in the pivot arm lock lever and that can accommodate the proximal end of the pivot arm. It is said.
The invention of claim 3 is a wheelchair body, and is attached to the wheelchair body so as to be pivotable in the front-rear direction of the wheelchair body, and when turned in the front direction of the wheelchair body, an assistant can enter inside. A U-shaped pivot arm, a pivot arm mounting plate that is disposed on both sides of the wheelchair body, and rotatably supports the pivot arm, and is pivotable on the pivot arm mounting plate. An attached pivot arm lock lever, a pivot arm housing notch formed in the pivot arm lock lever and capable of accommodating a base end portion of the pivot arm, and a rear side of the pivot arm lock lever And a rotation arm lock lever stop piece that prevents the rotation arm lock lever from rotating backward .

In the present invention, the wheelchair can be moved by using a pivot arm provided on the wheelchair body so that the wheelchair body can be easily moved even when going up and down a slope or in an uneven place such as a gravel road. It has the outstanding effect that the wheelchair where the assistant is sitting can be moved.
Since the present invention can easily move a wheelchair where the person being seated sits even when going up and down the slope or where there is an uneven surface such as a gravel road, the person being assisted cannot ever go out. It has an excellent effect that it can easily go to any place.
In addition to the excellent effect, the invention of claim 4 has an excellent effect that the attachment angle of the rotating arm can be adjusted according to the physique and preference of the assistant who moves the wheelchair.

  Examples of the best mode for carrying out the invention are shown below.

1 to 7 show an embodiment of a wheelchair with a rotating arm according to the present invention.
As shown in FIG. 1, the wheelchair 10 with a pivot arm is a wheelchair body 12 and a plan view that can be used by an assistant (not shown) when the wheelchair body 12 is moved by being attached to the wheelchair body 12. A U-shaped rotating arm 14 is provided.
The wheelchair body 12 is composed of a chair body 16 on which a person being assisted (not shown) sits, and a rear wheel 17 and a front wheel 18 provided at lower portions on both outer sides of the chair body 16.
Side frames 20 formed by bending pipes are disposed on both sides of the chair body 16. The side frame 20 includes an armrest portion 22 and an upright portion 24.
Middle side frames 26 are provided on both sides of the chair body 16 in the front-rear direction. A front end portion of the middle side frame 26 extends downward, and a plate-like footrest 28 is attached.
Back frames 30 are erected on both sides of the rear portion of the chair body 16 in the vertical direction. A handle 32 is continuously formed on the upper end of the back frame 30 so as to curve backward.
A chair seat 34 is stretched between the middle side frame 26 and the middle side frame 26 and between the back frame 30 and the back frame 30 so as to be able to sit on the chair body 16.
Further, underside frames 36 are respectively provided in the lower portions on both sides of the chair body 16 in the front-rear direction.
As shown in FIG. 4, a rectangular mounting board 37 is welded in the vicinity of the intersection of the underside frame 36 and the upright portion 24 of the side frame 20 (note that the wheelchair body 12 is shown in FIG. 4). The attachment board | substrate 37 attached to the right side of FIG. An arm mounting plate fixing bolt hole 38 is formed at the center of the mounting substrate 37, and an inclination angle adjusting bolt hole 39 is formed at the rear of the mounting substrate 37.
As shown in FIG. 7, rectangular rotation arm attachment plates 40 are attached to the side surfaces of the attachment substrate 37 so as to overlap each other.
As shown in FIGS. 5 and 6, a rotating arm mounting plate mounting hole 42 is formed through the intermediate portion of the rotating arm mounting plate 40 (FIGS. 5 and 6 show the wheelchair body 12. The rotation arm attachment plate 40 attached to the right side of FIG.
As shown in FIG. 7, a rotating arm mounting plate fixing bolt 44 is inserted and screwed into the rotating arm mounting plate mounting hole 42 and the rotating arm mounting plate fixing bolt hole 38. . Therefore, the rotating arm mounting plate 40 is attached to the mounting substrate 37 by the rotating arm mounting plate fixing bolt 44.
A rotating arm mounting pin 46 projects from an intermediate portion of the rotating arm mounting plate 40. A rotating arm lock lever 48 is attached to the front portion of the rotating arm mounting plate 40. The rotary arm lock lever 48 is attached to a hinge 50 provided on the rotary arm mounting plate 40, so that the rotary arm lock lever 48 is rotatable about the hinge 50 in the direction of the arrow in FIG. . The rotating arm lock lever 48 is formed with a rotating arm accommodating notch 52 (see FIG. 5).
The rotating arm lock lever 48 is connected to a coil spring 54 attached to the rotating arm mounting plate 40. When the rotating arm lock lever 48 is rotated to be in an upright state, the rotating arm lock lever 48 is moved backward. (Left side in FIG. 7). A rotating arm lock lever stop piece 55 projects from the rotating arm lock lever 48 at the rear. Therefore, even if the rotating arm lock lever 48 is pulled by the coil spring 54, the rotating arm lock lever 48 abuts on the rotating arm lock lever stop piece 55 and is prevented from further rotating backward, and the rotating arm mounting plate 40 is prevented from rotating. On the other hand, it stops in an upright state (the state shown in FIGS. 6 and 7).
As shown in FIGS. 5 and 6, an arcuate rotation arm attachment plate inclination adjustment long hole 56 as a rotation arm attachment plate inclination adjustment means is formed through the rear portion of the rotation arm attachment plate 40. Yes. The rotation arm attachment plate inclination adjustment long hole 56 is formed by continuously forming a plurality (seven in the embodiment) of rotation arm attachment plate inclination adjustment holes 58 in a circular arc shape. These rotation arm mounting plate inclination adjusting holes 58 are formed to have the same inner diameter as the inclination angle adjusting bolt hole 39.
As shown in FIG. 7, the rotating arm mounting plate tilt adjusting hole 58 and the tilt angle adjusting bolt hole 39 constitute rotating arm mounting plate tilt adjusting means together with the rotating arm mounting plate tilt adjusting long hole 56. The rotating arm mounting plate tilt adjustment bolt 60 is inserted and screwed in a fitted state.
Accordingly, the rotating arm mounting plate fixing bolt 44 is loosened, and the rotating arm mounting plate tilt adjusting bolt 60 is removed from the tilt angle adjusting bolt hole 39 and the rotating arm mounting plate tilt adjusting hole 58 to mount the rotating arm mounting. With the plate 40 in an inclined state, the rotating arm mounting plate tilt adjusting bolt 60 is again inserted into the rotating arm mounting plate tilt adjusting hole 58 and the tilt angle adjusting bolt hole 39 and screwed into the rotating arm mounting plate. If the fixing bolt 44 is tightened, the rotating arm attachment plate 40 can be attached to the attachment substrate 37 in an inclined state. Therefore, in this embodiment, the rotation arm attachment plate inclination adjustment slot 56 is composed of seven rotation arm attachment plate inclination adjustment holes 58, so that the rotation arm attachment plate 40 is attached at seven stages. Be able to.
As shown in FIG. 1, the turning arm 14 is rotatably attached to a turning arm attachment pin 46 projecting from the turning arm attachment plate 40. Therefore, the turning arm 14 is turnable in the forward direction (arrow A direction in FIG. 1) and the backward direction (arrow B direction in FIG. 1).
The rotating arm 14 includes an arcuate pipe 62 that is directly attached to the rotating arm mounting pin 46, a linear pipe 64 that is foldably attached to the tip of the arcuate pipe 62, and the linear pipe 64. And a connecting pipe 66 attached to the tip. The arc-shaped pipe 62 is formed of a base end portion 62A, an arc portion 62B formed with the same curvature as the rear wheel 17, and a tip end portion 62C.
As shown in FIG. 6, a rotating arm mounting pin through hole 68 is formed in the base end portion 62 </ b> A of the arc-shaped pipe 62 (shown by an imaginary line in FIG. 6). The threaded portion 46A is inserted, and the rotating arm 14 is attached so as to be rotatable in the forward direction (direction of arrow A in FIG. 1) and the rear direction (in the direction of arrow B in FIG. 1). Note that the arc-shaped pipe 62 of the rotating arm 14 stops at the position shown in FIG. 2 even if the rotating arm 14 is rotated to the maximum in the backward direction (the direction of arrow B in FIG. 1).
Further, as shown in FIG. 6, the base end portion 62A of the arc-shaped pipe 62 is accommodated in the pivot arm accommodating notch 52 when the pivot arm lock lever 48 is brought upright, and the pivot arm 14 is pivotally locked. The lever 48 is securely held.
As shown in FIG. 1, a connecting tool 70 is attached to the distal end portion 62 </ b> C of the arcuate pipe 62, and the distal end portion 62 </ b> C of the arcuate pipe 62 is attached to the base of the straight pipe 64 via the connecting tool 70. An end 64A is attached. When the connecting tool 70 is tightened, the distal end portion 62C of the arcuate pipe 62 and the proximal end portion 64A of the straight pipe 64 can be connected, and when the connecting tool 70 is loosened, the distal end portion 62C of the arcuate pipe 62 and the straight pipe 64 are connected. The base end portion 64A can be rotated so that the straight pipe 64 can be protruded (state shown in FIG. 1) and can be folded with respect to the arc-shaped pipe 62 (state shown in FIG. 3). It has become.
As shown in FIG. 1, a pivotal support 72 is provided at the tip 64B of one of the linear pipes 64, and one end 66A of the connecting pipe 66 is attached in a pivotal state. Yes. Accordingly, the connecting pipe 66 can be rotated in the horizontal direction around the one end 66A in the direction of arrow E and arrow F in FIG.
Further, a connecting tool 74 is attached to the other end 66B of the connecting pipe 66 so that it can be connected to the tip 64B of the other straight pipe 64.

Next, the operation of the wheelchair 10 with the rotating arm of the embodiment will be described.
When the person being assisted moves the wheelchair 10 with the pivot arm sitting on the wheelchair main body 12 to a flat place, the assistant holds the handle 32 of the wheelchair main body 12 and pushes the wheelchair main body 12 in the same manner as a conventional wheelchair. Thus, the wheelchair 10 with the pivot arm can be easily moved.
When the wheelchair 10 with a rotating arm, on which the person being assisted sits on the wheelchair body 12, moves up and down the slope or moves on an uneven surface such as a gravel road, a large force can be exerted even if the handle 32 is gripped. It becomes difficult.
Therefore, the assistant turns the straight pipe 64 (the state shown in FIG. 3) in a folded state around the connection tool 70 and starts up. Then, the connecting pipe 66 folded on one of the straight pipes 64 is rotated around one end 66A about the pivotal support 72, and the connecting tool 74 attached to the other end 66B of the connecting pipe 66 is connected to the other pipe 66. It connects with the front-end | tip part 64B of the linear pipe 64. FIG. As a result, the assembly of the substantially U-shaped rotating arm 14 in plan view is completed, and the rotating arm 14 is raised (the state shown in FIG. 2).
Then, the rotating arm 14 is rotated forward (in the direction of arrow A in FIG. 1), and the rotating arm lock lever 48 is rotated to bring the base end 62A of the arcuate pipe 62 into rotation. The moving arm is housed in the moving arm housing notch 52. Thereby, the rotating arm 14 is securely held by the rotating arm lock lever 48 (the state shown in FIG. 1).
Then, if the assistant enters the inside of the substantially U-shaped rotating arm 14 in plan view and pulls the rotating arm 14 with the whole body, the force is larger than when the handle 32 is gripped and the wheelchair body 12 is moved. Can act.
As a result, the wheelchair 10 with the rotating arm can be moved smoothly even when the person being assisted is placed on the wheelchair 10 with the rotating arm to move up and down the slope or move on an uneven place such as a gravel road. Can be made.
Moreover, since the wheelchair 10 with a rotating arm of the present invention does not use a motor or the like as a drive source, it is cheaper than an electric wheelchair, and thus has an effect that it is easy to purchase economically.
When the pivot arm 14 is folded, the pivot arm lock lever 48 is first pivoted and tilted, and the base of the arcuate pipe 62 of the pivot arm 14 accommodated in the pivot arm accommodation notch 52 is used. The end 62 </ b> A is removed from the turning arm accommodating notch 52. Then, the rotating arm 14 is rotated backward (in the direction of arrow B in FIG. 1) to be brought up (state shown in FIG. 2).
Next, the connection tool 74 provided on the other end 66B of the connection pipe 66 is operated to release the connection between the other end 66B of the connection pipe 66 and the tip 64B of the other straight pipe 64. Then, the connecting pipe 66 is rotated via the pivotal support 72 and overlapped with the one connecting pipe 66. Next, the connecting tool 70 is loosened and the straight pipe 64 is rotated and folded.
As a result, the rotating arm 14 is folded, and the folding operation of the rotating arm 14 is completed.
Therefore, the wheelchair 10 with the rotating arm of the present invention can be made the same size as the conventional wheelchair by folding the rotating arm 14 even if the rotating arm 14 is provided. The wheelchair 10 with a pivot arm can be stored and managed in the same space.
Moreover, the wheelchair 10 with a turning arm of the present invention is a turning arm in which a person being assisted can easily sit up and down on a slope by using the turning arm 14 or in an uneven place such as a gravel road. Since the attached wheelchair 10 can be easily moved, it is possible to easily go to a place where a caregiver has not been able to go out.
In addition, this makes it easier for the caregiver to go out to various places, and can also be used for health care and mental management of the caregiver.

If the assistant wants to change the mounting angle of the rotating arm 14 in accordance with his / her physique and preference, the rotating arm mounting plate fixing bolt 44 is loosened and the rotating arm mounting plate inclination adjusting bolt 60 is adjusted. The pivot arm mounting plate is pulled out of the tilt adjusting hole 58 and the tilt angle adjusting bolt hole 39. Then, the rotating arm mounting plate 40 is tilted so that the tilt angle is a desired angle, and the rotating arm mounting plate tilt adjusting bolt 60 is inserted into the rotating arm mounting plate tilt adjusting hole 58 and the tilt angle adjusting bolt hole 39. The rotating arm mounting plate fixing bolt 44 is tightened after being screwed. Thereby, the inclination angle of the rotation arm 14 attached to the rotation arm attachment plate 40 which can change the attachment angle of the rotation arm attachment plate 40 can also be changed.
Therefore, the wheelchair 10 with the pivot arm can be pulled in the state of the pivot arm 14 having the angle that is most easily pulled by the assistant who pulls the wheelchair 10 with the pivot arm.
In addition, when moving on a flat place, do not completely fold the rotating arm 14, but keep the rotating arm 14 up as shown in FIG. You may make it move the wheelchair 10 with a rotation arm.

In addition, of course, the structure of the wheelchair main body 12 used for the wheelchair 10 with a rotation arm of this invention is not limited to the structure of the said wheelchair main body 12 shown in the Example.
Further, in the embodiment, the case where the rotating arm 14 is used when moving up and down a slope or moving on an uneven part such as a gravel road has been described, but the rotating arm is also used when moving on a flat place. Needless to say, the wheelchair 10 with the pivot arm may be pulled and moved by using 14.
Of course, the assembly process and the folding process of the rotating arm 14 are not limited to the order shown in the embodiment.

It is a whole perspective view of the wheelchair with a rotation arm of an example. It is the whole perspective view of the state where the rotation arm of the wheelchair with a rotation arm of an example was started up. It is the perspective view which looked at the state which folded up the wheelchair with a rotation arm of an example completely from the back. It is a side view which shows the attachment state of the attachment board | substrate of the wheelchair with a rotation arm of an Example. It is a side view of the rotation arm attachment board of the wheelchair with a rotation arm of an Example. It is a side view of the state which made the rotation arm lock lever of the rotation arm attachment plate of the wheelchair with a rotation arm of an Example stand upright. It is a top view of the state which made the rotation arm lock lever of the rotation arm attachment plate attached to the attachment board | substrate of the wheelchair with a rotation arm of an Example erect.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wheelchair with a rotation arm 12 Wheelchair body 14 Rotation arm 16 Chair body 40 Rotation arm attachment plate 46 Rotation arm attachment pin 48 Rotation arm lock lever 52 Rotation arm accommodation notch 56 Rotation arm attachment plate inclination adjustment long hole 58 Rotating arm mounting plate tilt adjustment hole 60 Rotating arm mounting plate tilt adjusting bolt

Claims (3)

A wheelchair body, and a substantially U-shaped pivot arm in plan view that can be attached to the wheelchair body so as to be pivotable in the front- rear direction of the wheelchair body and can be inserted inside by an assistant when the wheelchair body is rotated forward. A rotating arm mounting plate disposed on both sides of the wheelchair main body and rotatably supporting the rotating arm, and the rotating arm mounted rotatably on the rotating arm mounting plate. A wheelchair with a rotating arm, characterized in that the wheelchair has a rotating arm lock lever . A wheelchair body, and a substantially U-shaped pivot arm in plan view that can be attached to the wheelchair body so as to be pivotable in the front-rear direction of the wheelchair body and can be inserted inside by an assistant when the wheelchair body is rotated forward. A pivot arm mounting plate disposed on both sides of the wheelchair body and rotatably supporting the pivot arm, and a pivot arm lock pivotally attached to the pivot arm mounting plate A wheelchair with a pivot arm, comprising: a lever; and a pivot arm housing notch formed in the pivot arm lock lever and capable of accommodating a base end portion of the pivot arm. . A wheelchair body, and a substantially U-shaped pivot arm in plan view that can be attached to the wheelchair body so as to be pivotable in the front-rear direction of the wheelchair body and can be inserted inside by an assistant when the wheelchair body is rotated forward. A pivot arm mounting plate disposed on both sides of the wheelchair body and rotatably supporting the pivot arm, and a pivot arm lock pivotally attached to the pivot arm mounting plate A lever, a turning arm housing notch formed in the turning arm lock lever and capable of accommodating the proximal end of the turning arm, and a protrusion protruding behind the turning arm lock lever A wheelchair with a pivot arm, comprising: a pivot arm lock lever stop piece that prevents the arm lock lever from pivoting backward .

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