JPH09313540A - Wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To alleviate an impact shock by attaching rotatable rings at the corners of footrests and covers with fins at the handles. SOLUTION: A pair of knob covers 20 made of rubber are attached to knob positions of handles 11 so that a helper grasps them to push this wheelchair and to guide a help-recipient to the destination. At the end of forward-inclined part of a frame set 10, a pair of foldable footrests 30 are attached. At the corners of the footrests 30, rotatable rings 31 are attached to alleviate incidental impact shock of this wheelchair 1 against wall or the like. Such constitution enables smooth turn too. At the grip ends of the knob covers 20 of the handles 11, a pair of feather-like fins 21 are attached and a sheet of fluorescent light reflection board is stuck to the back end. Additional fluorescent light reflection boards may be attached to other positions of the wheelchair to make people around the wheelchair recognize existence of the wheelchair.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair structure used by a person with a disability or the like, and particularly to a wheelchair in consideration of traveling safety.

[0002]

2. Description of the Related Art Conventionally, wheelchairs have been widely used for people with disabilities to move by themselves and to be moved by being pushed by a caregiver. When a person with a disability moves in a wheelchair by himself, if an obstacle or a moving object (person, car, etc.) suddenly appears in front of him, the wheelchair is used to prevent a collision. Need to stop. In preparation for such a case, a braking device is mounted at a position on the side of the wheelchair that can be reached, but in reality, other safety factors are not taken into consideration.

[0003]

By the way, the conventional braking device has a complicated gear mechanism and has a complicated structure because the operation direction is limited to one direction. There was a problem that the braking operation could not be done in time because the operation was mistaken. In addition, there is also one in which a guide groove is provided on the lever of the braking device, and the lever is operated along the groove, but it becomes engrossed in a dull moment and reliable braking can be obtained in an emergency. There wasn't. In addition to the braking device, a structure considering safety is required as much as possible. There are demands for measures to prevent the vehicle from being hit by another vehicle and to soften the impact when the vehicle hits a wall or the like. The present invention has been made under the circumstances as described above, and an object of the present invention is to consider a safety measure so as not to be collided with other vehicles, or to devise a method of softening the impact even when the vehicle collides with a wall or the like. To provide a wheelchair that did.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a wheelchair, and the above object of the present invention is to provide a footrest corner.
This is achieved by having a rotatable wheel in the portion and attaching a handle cover with fins to the handle portion.
This can be achieved more effectively by attaching a reflective fluorescent plate to the rotary shafts of the handle cover and the large wheels.

[0005]

1 shows the overall structure of a wheelchair 1 according to the present invention. Large wheels 2 around which solid tires or pneumatic tires are provided are provided with a hand rim 3 on both sides. The wheelchair 1 is entirely formed of a tubular aluminum frame 10 in a foldable manner, has a handle 11 for pushing and guiding by a caregiver in the rear portion, and a handle portion made of rubber for easy gripping. Handle cover 20
Is attached. Further, a backrest 12 made of leather or synthetic resin is stretched on the rear portion of the frame 10, and a seat 13 made of leather or synthetic resin is placed on the sitting portion.
And a leg rest 14 made of leather or synthetic resin is also stretched on the forwardly inclined portion. The leg rest 14 is of a foldable type, and the corner portion is provided with a rotatable wheel 31 which is rotatable. Further, an armrest 15 is attached to the upper portion of the frame 10 for a rider to attach his elbows and arms.

A caster is provided on the front hanging portion of the frame 10.
4 is attached so that the traveling direction can be freely changed. A foldable footrest 30 is attached to the tip of the forwardly inclined portion of the frame 10. Then, on the frames 10 on both sides of the sheet 13,
A braking device 100 as shown in detail in FIG. 2 is attached, and by operating the lever 101 in the forward direction (F) or the backward direction (R) of the traveling direction, the rubber pad 102 moves in the P direction and the kamaboko The shaped rubber pad 102 is pressed against the tire surface of the large wheel 2 to brake.

The internal structure of the braking device 100 is as shown in FIG. 3, and there is a substantially elliptical main body board 103 for attaching the back side to the frame 10 of the wheelchair 1, and the left side of the main body board 103 is long. A pad arm 104 having a shape is arranged, and is oscillated around a shaft 105 above the pad arm 104 as a fulcrum, and a rubber pad 102 is arranged at the tip of the pad arm 104. Pad arm 1
A shaft 111 is arranged in the middle of 04.
The swing piece 110 is axially mounted on the base plate 103, and a support 112 is projectingly provided at the lower end of the right side of the main body board 103, and the swing piece 113 is mounted on the support 112. Oscillating pieces 110 and 11
The other ends of the rocking rods 3 are hooked together and coupled by a shaft 114, and the inclined surfaces 120A and 120B are brought into close contact with the upper surfaces of the rocking pieces 110 and 113 that are hooked, so that the rocking table 120 of the rocking table 120 is slid. The lower part is attached to the shaft 114,
A lever 101 is vertically provided on the top of the rocking table 120. Further, a pin 131 is provided on the lower portion of the shaft 111 of the pad arm 104, and a pin 132 is also provided on the lower portion of the main body board 103.
And a spring 1 between the pins 131 and 132.
30 are suspended. The pad arm 104 is always pulled in the direction A in the figure by the elastic action of the spring 130. However, since the rocking base 120 is pivotally attached to the shaft 114, and the inclined surfaces 120A and 120B are in close contact with the upper surfaces of the rocking pieces 110 and 113 that are hung on the rocking base 120, FIG.
Maintain a balanced state. In this state, the rubber pad 102 is separated from the tire of the large wheel 2. FIG. 2 shows a state in which the cover 140 is attached to the body panel 103 of FIG.

In such a structure, when a person on the wheelchair 1 operates the braking device 100 to stop,
By operating the lever 101 in either the forward or backward R or F direction, the pad arm 104 swings in the P direction, and the rubber pad 102 is pressed by the tire of the large wheel 2 and braked. That is, as shown in FIG. 4, when the lever 101 is operated and moved in the F direction, for example, the rocking base 120 is moved.
The inclined surface 120A presses the upper surface of the swing piece 110, so that the swing piece 110 swings in the B direction with the shaft 111 as the fulcrum, and the swing piece 113 swings in the C direction with the shaft 112 as the fulcrum. . At the same time, the pad arm 104 swings in the P direction against the tensile force of the spring 130 with the shaft 105 as a fulcrum.

Then, when the lever 101 is further pushed in the F direction, finally, as shown in FIG.
13 swings to a substantially horizontal position and stops in a substantially V-shape, and the pad arm 104 also moves fully so that the rubber pad 102 is pressed against the tire of the large wheel 2. Lever 10 in this state
Even when 1 is released from the hand, since the swinging pieces 110 and 113 are substantially V-shaped, the braking state is maintained as it is. Then, when the lever 101 is moved in the R direction, the pad arm 10 is pulled by the pulling force of the spring 130.
4. The swinging pieces 110 and 113 are restored to the initial state shown in FIG.

On the other hand, the same applies when the lever 101 is operated in the R direction from the state shown in FIG. 3, and the braking state shown in FIG. 6 is obtained. That is, the inclined surface 120B of the rocking base 120 causes the rocking piece 1 to move.
Since the upper surface of 13 is pressed, the swing piece 113 swings in the C direction with the shaft 112 as the fulcrum, and the swing piece 110 swings in the B direction with the shaft 111 as the fulcrum. At the same time,
The pad arm 104 swings in the P direction against the tensile force of the spring 130 with the shaft 105 as a fulcrum.

On the other hand, the large wheel 2 and the hand rim 3 of the wheelchair 1 of FIG. 1 are provided with a fluorescent reflector 5 on the side of the rotating shaft, and the handle cover 20 of the handle 11 is as shown in FIGS. 7 and 8. In addition, the caregiver is provided with an inwardly extending wing-shaped fin 21 at the rear portion of the handle 11 and a fluorescent reflection plate 22 is attached to the rear end portion of the handle 11. Further, the fluorescent reflector can be arbitrarily attached to other portions to notify other persons of the position of the wheelchair 1 by reflecting light.

As described above, in the wheelchair 1 of the present invention, since the rotating wheel 31 is attached to the corner portion of the footrest 30, the impact can be softened even if the wheelchair 1 collides with a wall or the like. The direction of travel can be changed smoothly. Further, since the fluorescent reflector is attached to the rear end of the handle 11 and the side surface of the rotating shaft, the position of the wheelchair 1 can be notified to others by light reflection, and safety can be ensured.

[0013]

According to the wheelchair of the present invention, since the rotating wheel is attached to the footrest which is the corner portion of the wheelchair, the impact can be softened even when the wheelchair collides with a wall or the like. The advantage is that the traveling direction can be changed smoothly. In addition, since a fluorescent reflector is attached to the rear end of the handle, the side surface of the rotating shaft, etc., light is reflected by light from a distance, and the position of the wheelchair can be notified to other people, thus ensuring safety. There is an advantage that can be secured.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of the present invention.

FIG. 2 is an external view showing an example of a braking device.

FIG. 3 is a mechanism diagram showing an operation example of a braking device.

FIG. 4 is a mechanism diagram showing an operation example of a braking device.

FIG. 5 is a mechanism diagram showing an operation example of a braking device.

FIG. 6 is a mechanism diagram showing an operation example of a braking device.

FIG. 7 shows a handle according to the present invention.

FIG. 8 is a view showing a handle cover of the present invention.

[Explanation of symbols]

 1 Wheelchair 2 Large Wheel 3 Hand Rim 4 Castor 5 Fluorescent Reflector 10 Frame 20 Handle Cover 30 Footrest 100 Braking Device

Claims (2)

[Claims] 1. A handle cover having a turnable wheel at a corner portion of a footrest and a fin portion provided with a handle portion.
A wheelchair characterized by being attached. 2. The wheelchair according to claim 1, wherein a fluorescent reflector is attached to the rotation shafts of the handle cover and the large wheels.