JPS60910Y2 - wheelchair - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a wheelchair.

The inside of the wheels of a conventional wheelchair is 620rrvn, so for example, if you walk from the lobby to the narrow aisle of the airplane (420rrvn)
m) cannot be entered.

For this reason, there was a drawback that a physically disabled person had to be carried on his/her back when getting on and off the train.

The purpose of this invention is to overcome the above-mentioned drawbacks by allowing the vehicle to enter narrow passages such as inside airplanes or cars.

In this invention, the frame width and the auxiliary vehicle export are set to have a narrow passage width, and the main wheels installed on the frame to have a width that provides stable running performance are placed directly above the auxiliary wheels and at the outer ground contact position of the auxiliary wheels. To provide a wheelchair that can be raised and lowered freely.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In the figure, A is a wheelchair frame whose width is slightly smaller than the width of a narrow passage inside an airplane or a car.
is a seat 1 and a backrest 2 that stands up from the rear edge of this seat 1.
, the handle 3 provided at the upper end of this backrest 2, and the seat 1.
It consists of a footrest 4 that hangs down from the front edge of the footrest.

In addition, auxiliary wheels 5 are provided at the front and rear of both sides of the wheelchair frame A, and the insides of the left and right wheels are slightly smaller than the narrow passage width.

Further, the wheelchair frame A is provided with main wheels 6 which are positioned directly above the auxiliary wheels 5 when ascending and which touch the ground outside the auxiliary wheels 5 when descending.

To attach the main wheel 6, in the case shown in the figure, to attach the auxiliary wheel 5, a shaft member 8 supported by the wheelchair frame A is provided at the third position of the rear leg lever 7, and a pin 9 is attached to the lower part of the shaft member 8. The inner ends of the left and right pair of upper links 10 and the lower links 1
The support leg rods 13 of the main wheel 6 are attached to the outer ends of the upper link 10 and the lower link 11 via pins 12, and the lock screws 14 fitted into the shaft member 8 support the inner ends of the upper links 10 and 11, respectively.
The inner end of the pair of links 17 is attached to the attached slider 15 via the pin 16, and the outer end of the link 17 is attached to the upper link 10 via the pin 18, and the main wheel 6 is raised and lowered by raising and lowering the slider 15. It looks like this.

In addition, when the opposing distance between the members 19 of the armrests provided on both sides of the backrest 2 is wider than the width of the wheelchair frame A, the armrests are provided on the rear side of the backrest 2 as shown in the figure so that the members 19 can be rotated. It is a good idea to leave it as

The wheelchair according to this invention has the above configuration, and when traveling in a narrow passage such as inside an airplane or a car, the wheelchair has one screw.
4 is loosened and the link 17 is slid upward together with the slider 15, the upper link 10 and the lower link 11 are rotated in the rising direction, and the main wheel 6 is pulled up directly above the auxiliary wheel 5.

Then, by tightening the screw 14, the slider 15 is attached to the shaft member 8.
lock.

Next, when traveling other than the narrow passage mentioned above, when the screw 14 is loosened and the link 17 is lowered together with the slider 15, the upper link 10 and the lower link 11 are rotated in the falling direction, and the auxiliary wheel 5 is rotated. The main wheels 6 are lowered to the outside.

Then, by tightening the screw 14, the slider 15 is attached to the shaft member 8.
As described above, the wheelchair according to this invention includes a seat, a backrest with a handle that stands up from the rear edge of the seat, and a footrest that hangs down from the front edge of the seat. a wheelchair frame configured so that the width of the wheelchair frame is slightly smaller than the width of the narrow aisle;
Auxiliary wheels are installed at the front and back of both sides of this wheelchair frame so that the inside of the left and right wheels is slightly smaller than the narrow passage width, and a shaft member is installed at the third position between the left and right auxiliary wheels and attached to the wheelchair frame. A pair of left and right upper links and lower links whose inner ends are pivotally supported through pins at the bottom of the shaft members, and shafts are supported through pins at the outer ends of these upper links and lower links that protrude outward beyond the auxiliary wheels. A supporting leg rod supported by the supporting leg rod, a main wheel provided at the lower end of both supporting leg rods, a slider with a lock screw fitted to the shaft member so as to be able to rise and fall freely, and a link whose both ends are pivotally supported by the slider and the upper link. The main wheels are positioned directly above the auxiliary wheels when rising, and are positioned outside of the auxiliary wheels as they descend, due to the up-and-down rotation of the upper and lower links. Stable running is possible with the wheels touching the ground, and driving in narrow passages is possible with the auxiliary wheels by lifting the main wheels.

Therefore, it is possible to enter, for example, from the lobby into a narrow passage such as inside an airplane or a car, and it is possible to eliminate the conventional inconvenience of having to support a physically disabled person to get on and off the plane.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the wheelchair according to this invention, FIG. 2 is a rear view of the wheelchair, and FIG. 3 is a rear view with the main wheels pulled up. A...Wheelchair frame, 1...Seat,
2...Backrest, 3...Handle, 4.
...Footrest, 5...Auxiliary wheels, 6...
...Main wheel, 7...Rear leg lever, 8...
Shaft material, 9... Zen, 10... Upper link, 11... Lower: link, 12... Pin, 13... Support Leg rod, 14...screw, 15...slider, 16...pin,
17...link, 18...pin.

Claims (1)

[Scope of utility model registration request] A wheelchair frame comprising a seat, a backrest with a handle that stands up from the rear edge of the seat, and a footrest that hangs down from the front edge of the seat, the width of which is slightly smaller than the width of a narrow aisle, and this wheelchair. Auxiliary wheels are installed at the front and back of both sides of the frame so that the inside of the left and right wheels is slightly smaller than the narrow passage width, and a vertical shaft member is installed to the wheelchair frame and placed at a trisection between the left and right auxiliary wheels. A pair of left and right upper ricks and non-side links whose inner ends are pivotally supported through pins at the bottom of the shaft members, and shafts are supported through pins at the outer ends of the upper and lower links that protrude outward from the auxiliary wheels. A supporting leg rod supported by... a main wheel provided at the lower end of both supporting leg rods, a slider with a lock screw fitted to the shaft member so as to be able to rise and fall freely, and both ends of the slider and the upper link being pivotally supported. A wheelchair that comes out of the link.