JP5829813B2 - Wheelchair with removable main wheels connected by axle - Google Patents

Description

  The present invention relates to a wheelchair that can travel in a narrow passage between seats such as airplanes and trains. More specifically, the large diameter main wheel of the wheelchair is connected by an axle so that it can travel in a narrow passage between seats of airplanes, trains, etc., and the large diameter main wheel is removed in the narrow passage, and the armrest It is related with the wheelchair which folded the wheel and made the width | variety of a wheelchair narrow and was able to drive | work a narrow passage.

  Wheelchair users can ride with the assistance of station staff in the case of trains and the like that have a wide entrance and a large space in the office when riding a vehicle. However, a vehicle with a narrow entrance and a narrow passage between seats, such as an airplane or a bullet train, cannot use a normal wheelchair and places a heavy burden on the assistant. Therefore, various wheelchairs that can travel even in narrow passages have been studied.

  According to claim 1 of Patent Document 1, “a rear wheel that is pivotally supported by the frame via a wheel attaching / detaching mechanism and is always in contact with the running surface, and a rear wheel provided at the lower part of the frame from the running surface. A lift-up device capable of ascending to a separated position, wherein the lift-up device includes a support arm pivotally attached to a lower end of a wheelchair frame, and a free end of the support arm. A lift-up wheel provided at the lower part of the part, a first link bar having a pedal part and having an upper end pivoted to the lower part of the frame, and a lower end pivoted to the free end of the support arm. Includes a second link bar pivotally attached to the lower end of the first link bar, and a spring that urges the support arm to rotate toward the lower part of the frame, and the lift-up wheel approaches the lower part of the frame. Ungrounded A wheelchair characterized in that it is formed so as to be able to move up and down between a grounding position and a grounding position grounded to the traveling surface, and is formed so that the height position of the frame can be raised at the grounding position. .

  The means for solving the problem of paragraph [0005] of Patent Document 2 includes: “In the wheelchair provided with a seat, a backrest, an armrest, a pedestal with a footrest attached, and a small-diameter wheel attached to the pedestal. The wheelchair device comprises a large-diameter wheel having a diameter larger than that of the small-diameter wheel, and the detachable large-diameter wheel. A wheelchair device comprising a slope rail composed of two rails composed of a horizontal portion and a horizontal portion.In addition, the present invention relates to the above-described wheelchair device, the backrest having a reclining mechanism, A wheelchair device comprising: a seat that slides on rails provided on both sides of the backrest, and the present invention includes any one of the wheelchair devices described above. The wheelchair device is characterized in that the seat portion is configured to allow at least 90 degree plane rotation with respect to the pedestal. Use of a wheelchair device to attach and detach a large-diameter wheel by placing the small-diameter wheel on a slope rail and climbing the wheelchair device to a position where the large-diameter wheel does not contact the floor surface. It is a method. "

The means for solving the problem of paragraph [0007] of Patent Document 3 includes: “In order to solve the above-mentioned problem, in the invention of claim 1, a seat (seat body), a backrest (backrest), and these In a wheelchair equipped with a main body frame for supporting a pair of outdoor rear wheels (main wheels) and smaller indoor rear wheels, and a smaller diameter than the outdoor rear wheels, on the left and right sides of the main body frame The pair of outdoor front wheels and indoor front wheels is configured to be attached so that the group of outdoor front and rear wheels and the group of indoor front and rear wheels can be selectively used.
Further, in paragraph [0008], “the invention of claim 2 is a more preferable aspect, and in the invention of claim 1, the outdoor rear wheel is detachable from the body frame, while the outdoor The front wheel and the indoor front wheel are attached to a support member that can be rotated around a horizontally long axis, so that the outdoor front wheel and the indoor front wheel can be selectively grounded by changing the posture of the support member. It is disclosed.

  As described above, in Patent Document 1, the large-diameter rear wheel is made detachable so that it can run even in a narrow place, whereas in Patent Documents 2 and 3, the outdoor rear wheel is removed indoors, A wheelchair is disclosed in which the rear wheels are detachable so that they can run outdoors with the rear wheels. However, in order to travel in a narrow passage, the above wheelchair is not sufficient, and the appearance of a wheelchair capable of traveling in a narrow passage such as between airplane seats or train seats is desired.

Japanese Patent No. 3818699 JP 11-197190 A JP 2004-073509 A

  This invention provides the wheelchair which can drive | work the narrow channel | path between seats, such as an airplane and a train. More specifically, the large diameter main wheel of a normal wheelchair is made detachable and the armrests attached to both sides of the seat are folded so that it can travel in a narrow passage between seats of airplanes, trains, etc. Therefore, it provides a wheelchair that can travel even in a narrow passage.

The present invention has been made in view of the aforementioned, an airplane, so they can travel a narrow passage between the seat such as trains, the main wheels of a large diameter on either side of a normal wheelchair linked with an axle, a wheel chair you detachably did.

The present invention is a wheelchair having a front caster and a rear caster, and having a seat portion and a backrest at the rear portion of the seat portion, and is connected to an axle that is removably attached to the wheelchair. A wheel, an axle upper clamping part rotatably attached to the wheelchair, and an axle lower clamping part for clamping the axle from above and below in cooperation with the axle upper clamping part. The sandwiching portion has an opening into which the axle can be inserted , and the axle upper sandwiching portion and the axle lower sandwiching portion can be opened and closed by a turning operation, and the axle upper sandwiching portion and the axle lower sandwiching portion are When the main wheel is open and detachable from the wheelchair, the opening of the upper axle pinching portion is directed toward the rear side of the wheelchair, the upper axle pinching portion and the lower axle pinching portion are closed, and the main wheel is closed. Wheels attached to the wheelchair In the state of being, characterized in that opening of the axle upper clamping portion is directed downward of the wheelchair. When the large-diameter main wheel is removed, the armrest frames attached to both sides of the seat can be turned. As still another feature, by turning the armrest, the width of the wheelchair is further narrowed and can be easily passed by the assistant through a passage such as a bullet train or an aircraft.

  Another feature of the present invention is a wheelchair in which the left and right large-diameter main wheels connected to the axle are removed when the axle is removed, and the armrest can be folded behind the backrest of the wheelchair. When the main wheel with large diameter is removed, the frame of the armrest attached on both sides of the seat becomes rotatable, and by turning the armrest to the back of the backrest, the width of the wheelchair is further reduced, the Shinkansen, It can be easily passed by an assistant through an aircraft passage.

  Another feature of the present invention is a wheelchair in which the left and right large-diameter main wheels connected to the axle are removed when the axle is removed, and the armrest can be folded under the seat of the wheelchair. . When the large-diameter main wheel is removed, the armrest frame attached to both sides of the seat can be turned to the lower side of the seat, and the width of the wheelchair can be increased by rotating the armrest under the seat. It becomes even narrower and can be easily passed by an assistant through the Shinkansen and aircraft passages.

Wheelchair having a main wheel detachably connected with the axle of the present invention, by removing the main wheel of large diameter, a frame of the armrest that is clamped by the sides of the seat portion that Do rotatable.

FIG. 1A shows a side view of the wheelchair of the present invention. (B) shows the rear view which lifted up the wheelchair of this invention. (C) shows a large-diameter wheel connected by an axle. FIG. 2A shows a state where a large-diameter wheel connected by an axle is fixed. FIG. 2B shows a state in which a large-diameter wheel connected by an axle can be removed from the shaft stopper. FIG. 3 (A) shows a rear view in which the armrest of the wheelchair with the main wheel having a large diameter removed is folded behind the backrest. FIG. 3B shows a side view in which the armrest of the wheelchair with the large-diameter main wheel removed is folded back behind the backrest. FIG. 4 (A) shows a front view in which the armrest of the wheelchair with the large-diameter main wheel removed is folded to the lower side of the seat. FIG. 4B shows a side view in which the armrest of the wheelchair with the large-diameter main wheel removed is folded to the lower side of the seat.

  Several preferred embodiments of the embodiments of the present invention are illustrated below with reference to the drawings, but are not intended to limit the scope of the invention described in the claims.

  As shown in FIG. 1 (A), the wheelchair according to the present invention has a front caster 11 that is rotatable and a rear caster 12 that does not rotate on a lower frame 16 of the wheelchair. The large-diameter main wheel 13 connected by an axle 26 to a wheelchair having a backrest 20 at the rear, an armrest 21 having tackle brakes 22 on both sides of the seat 19 and a footrest 22 on the front frame 14. This is a wheelchair on which an axle 26 is detachably attached. When the lift-up lever 24 mounted on the rear part of the wheelchair is raised, the axle pinching portions 27 and 28 are opened and the axle 26 can be removed. When the axle 26 is removed, the large-diameter main wheel 13 attached to both sides of the axle 26 is removed, and the armrest 21 can be folded.

  As shown in FIG. 1 (B), the wheelchair according to the present invention includes a front caster 11 that can be rotated to the front, a seat 19 and a back 20 that is attached to a back frame 17 at the rear of the seat, The lift-up lever 24 part of the rear part of the wheelchair which the armrest 21 on both sides of the part 19 and the large diameter main wheel 13 provided with the hand rim 13a on both sides was connected with the axle and was detachably mounted is shown. As shown in FIG. 1B, the lift-up lever 24 is attached to the rear of the wheelchair, and when an assistant kicks the lift-up lever 24 with his / her foot or lifts it with his / her hand, the upper and lower axle pinching portions 27 are disposed. , 28 open, and the axle can be removed.

  In FIG. 1 (C), the assistant lifts the lift-up lever 24 at the rear of the wheelchair or lifts it with his / her foot to open the upper and lower axle pinching portions 27 and 28 and is connected by the axle removed from the wheelchair. The left and right large-diameter main wheels 13 are shown.

  FIG. 2A shows a portion of the lift-up lever 24 of the wheelchair of the present invention. The detachable left and right main wheels 13 are connected by an axle 26, and are sandwiched between an upper axle pinching portion 27 and an axle lower pinching portion 28 from above and below. The axle upper pinching portion 27 is connected to the lift-up lever 24 and opens and closes the axle pinching portions 27 and 28.

  FIG. 2B shows that when the foot caster 25 attached to the rear caster 12 is stepped on and the rear caster 12 is fixed and the lift-up lever 24 is lifted, the left and right axle upper pinching portions 27 are rotated, 24 becomes removable, and the left and right main wheels 13 connected to the axle 24 can be removed.

  FIG. 3A shows a side view in which the armrest 21 of the wheelchair 100 from which the large-diameter main wheel 13 is removed is folded behind the backrest 20. A tackle brake 22 is attached to the armrest 21, and the tackle brake 22 is also stored rearward together with the armrest 21. When the armrest 21 is folded rearward in this way, the lateral width of the wheelchair 100 of the present invention is 400 mm, and the assistant can easily travel through a narrow passage between the seats of a train such as an aircraft or a bullet train. The width of the wheelchair after removing the main wheel with the large diameter is not limited to the above width, but can be traveled through a narrow passage between the seats of a train such as an aircraft or a bullet train, for example, a width of 350 mm to 450 mm. Is desirable.

  FIG. 3 (B) has a pivotable caster 11 at the front and a rear caster 12 at the rear, which does not rotate, a seat 19, a backrest 20 at the rear of the seat, and armrests 21 on both sides of the seat. FIG. In the wheelchair 100 of the present invention, the large-diameter main wheel 13 connected by the axle 26 is sandwiched by the axle upper pinching portion 27 and the axle lower pinching portion 28. When the lift-up lever 24 connected to the left and right axle upper holding portions 27 is lifted, the left and right axle upper holding portions 27 rotate to allow the axle 26 to be removed, and by removing the axle 26, it is connected to the axle. The left and right large-diameter main wheels 13 are removed. When the left and right large-diameter main wheels 13 are removed, the left and right armrests 21 are pivotable from the shaft mounting portions 21a of the armrests 21, and are wheelchairs 100 that can be folded to the rear part of the backrest 20 of the wheelchair.

  FIG. 4A shows a front view in which the armrest 21 of the wheelchair 200 with the large-diameter main wheel 13 removed is folded under the wheelchair. A tackle brake 22 is attached to the armrest 21, and the tackle brake 22 is also housed in the lower part of the seat portion 19 of the wheelchair together with the armrest 21. In such a state, the lateral width of the wheelchair 200 of the present invention is 400 mm, and the assistant can easily travel through a narrow passage between seats of a train such as an aircraft or a bullet train. The width of the wheelchair 200 after the large-diameter main wheel 13 is removed is not limited to the above-mentioned width, and is a width that can travel in a narrow passage between train seats such as aircraft and Shinkansen, for example, 350 mm to 450 mm. A width of is desirable.

  FIG. 4 (B) has a rotatable caster 11 at the front and a rear caster 12 not rotated at the rear, a seat 19, a backrest 20 at the rear of the seat, and an armrest 21 on both sides of the seat. The side view of the wheelchair 200 which has is shown. In the wheelchair 200 of the present invention, the large-diameter main wheel 13 connected by the axle 26 is held between the upper axle pinching portion 27 and the lower axle pinching portion 28. When the lift-up lever 24 connected to the left and right axle upper holding portions 27 is lifted, the left and right axle upper holding portions 27 rotate to allow the axle 26 to be removed, and by removing the axle 26, it is connected to the axle. The left and right large-diameter main wheels 13 are removed. When the left and right large-diameter main wheels 13 are removed, the left and right armrests 21 are wheelchairs 200 that can be pivoted from the shaft mounting portions 21 a of the armrests 21 and can be folded under the seating portion 19 of the wheelchair.

100: A wheelchair in which an armrest of a wheelchair having a detachable large-diameter main wheel can be folded behind a backrest.
200: A wheelchair in which an armrest of a wheelchair having a detachable large-diameter main wheel can be folded under the seat.
11: Turnable front caster 12: Rear caster 13: Large diameter main wheel 14: Front frame 15: Upper frame 16: Lower frame 17: Back frame 18: Grip 19: Seat 20: Back 21: Armrest 22: Tackle brake 23: Footrest 24: Lift-up lever 25: Foot lever 26: Axle 27: Axle upper clamping part 28: Axle lower clamping part

Claims (3)

A wheelchair having a front caster and a rear caster, and having a seat and a backrest at the rear of the seat,
A large-diameter main wheel connected by an axle that is removably attached to the wheelchair;
An upper axle pinching portion attached to the wheelchair to be rotatable;
An axle lower pinching portion for clamping the axle from above and below in cooperation with the axle upper pinching portion;
The axle upper clamping part has an opening into which the axle can be inserted, and can open and close the axle upper clamping part and the axle lower clamping part by a turning operation.
In a state where the axle upper clamping part and the axle lower clamping part are opened and the main wheel is detachable from the wheelchair, the opening of the axle upper clamping part faces the rear side of the wheelchair, and the axle upper clamping The wheelchair is characterized in that the opening of the upper axle pinching portion faces the lower side of the wheelchair in a state in which the main wheel is attached to the wheelchair while the lower portion and the lower axle pinching portion are closed . Having armrests with tackle brakes on both sides of the seat,
The wheelchair according to claim 1, wherein the armrest is foldable to a rear portion of the backrest after the axle of the main wheel is removed from the wheelchair. The wheelchair according to claim 1, wherein the armrest is foldable at a lower portion of the seat portion.

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