JP2000316912A - Wheel chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a convenient wheel chair to an assisting person by improving its controllability. SOLUTION: In a wheel chair, a pair of main frames 1, 1 is connected with openable X legs to become foldable, big wheels 3, 3 are rotatably axially supported to each main frame, free wheels 6, 6 are provided to front sections of each main frame, a sitting seat 4 and a reclining back seat 5 are provided spreading between main frames, a width direction horizontal handle 15 for connecting with a pair of standing shafts 13, 13-provided at a rear section of each main frame is provided at an upper edge section of the shafts, and a foldable joint section 16 is provided at a generally middle position of the width direction horizontal handle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair with improved caregiver convenience.

[0002]

2. Description of the Related Art In general, a wheelchair is constructed such that a pair of main frames formed by bending a metal pipe are connected to each other by an openable X leg to be freely foldable, and left and right large wheels are rotatably supported on the respective main frames. A free wheel is provided at the front of each of the main frames, and a seat seat and a backrest seat are stretched between the main frames. Then, the upper end of an upright shaft made of a metal pipe provided for stretching a backrest seat at the rear portion of each main frame 1 is bent backward, and a grip portion is provided like a handle of a bicycle, and a grip portion is provided thereunder. A brake lever is attached so that the caregiver can operate it.

[0003]

As described above, the handle of a conventional wheelchair has a form in which a pair of grip portions protrude rearward as if it were a bicycle handle. For this reason, for example, it is difficult to move back and forth by one-handed operation, so that the push-pull operation cannot be performed with the operational feeling of a baby carriage, so that there is a drawback that the caregiver is not easy to use.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, to improve the operability of a wheelchair, and to provide a wheelchair that is easy for a caregiver to use.

[0005]

For this purpose, a wheelchair according to the present invention is constructed such that a pair of main frames are connected by an openable / closable X-leg so as to be foldable, and a large wheel is rotatably supported on each main frame. A universal wheel is provided at the front of each of the main frames, and in a wheelchair having a seat and a backrest seat stretched between the main frames, a pair of upright shafts provided at a rear portion of each of the main frames is provided. It is characterized in that a width-direction horizontal handle connecting the upright shafts is provided at the upper end portion, and a resilient joint is provided at a substantially intermediate position of the width-direction horizontal handle. The present invention also relates to the wheelchair,
A joint mechanism is provided with a detachable lock mechanism for locking the widthwise horizontal handle in a straight line.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view of the entire wheelchair, and FIG. 5 is a perspective view of the wheelchair when folded. In this wheelchair, a pair of main frames 1 and 1 made of a metal pipe are connected by an openable / closable X-leg 2 so as to be foldable, and large wheels 3 and 3 are rotatably supported on the main frames. A seat seat 4 and a backrest seat 5 are stretched between the main frames, metal pipes at the front of the main frame 1 are provided in a hanging manner from both sides of the seat seat 4, and free wheels 6 and 6 are provided at the lower ends thereof. Provided. 7 and 7 are stop pins 8
A pair of auxiliary frames 9 are fixed by footing, 9 is a foot seat stretched between the auxiliary frames, and 10 is a foot plate supported between the auxiliary frames. Reference numerals 11 and 11 denote wheel covers of the large wheels 3, and 12 and 12 denote armrests provided on the upper portions of the wheel covers.

Further, the upper ends of a pair of upright shafts 13, 13 provided at the rear portion of each main frame 1, 1 are bent rearward to provide grip portions 14, 14, and a width direction connecting the upright shafts is provided. A horizontal handle 15 is provided, and a resilient joint 16 is provided at a substantially middle position of the horizontal handle in the width direction. That is, the widthwise horizontal handle 15 is composed of two rod-like members 15a, 15a covered with elastic covers 19, 19, respectively.
15b is connected by an articulated shaft 17 so as to be freely bent, one rod-shaped member 15a is connected to the rear end of one grip portion 14 via a pivot 18a, and the other rod-shaped member 15a is connected.
b is connected to the rear end of the other grip part 14 via a pivot 18 b, and the rod-shaped members 15 a, 15 b
Can be bent forward.

The joint 16 has a pin 20 and a lock hole 2.
1 is provided, and the widthwise horizontal handle 15 can be held in a straight line by fitting the pin 20 into the lock hole 21. That is, the rod-shaped member 15
a is provided with a shaft hole 22 through which the pin 20 penetrates, and the pin 20 is urged in the direction of the arrow by a spring 23 provided in the shaft hole so that the tip of the pin 20 is opened at the extension of the other bar-shaped member 15b. A lock 24 is provided at the other end of the pin 20 so as to match the locked position of the lock hole 21. In addition,
Reference numerals 25, 25 denote brake levers attached to the lower sides of the grip portions 14, 14, respectively. Reference numerals 26, 26 denote joints that enable the upright shafts 13, 13 to be tilted backward.

In the wheelchair constructed as described above, in the use state shown in FIG. 1, the width of the horizontal handle 15 is extended in a straight line by widening the interval between the pair of main frames 1 and 1 so that the pin 20 is elastically elastic. Of the lock hole 21
And the linear state is maintained. Therefore, the caregiver can grasp the desired portion of the widthwise horizontal handle 15 by hand through the elastic covers 19, 19, and even if grasping with one hand, the wheelchair can be easily moved back and forth or in the desired direction. Operability is significantly improved.

Further, by pulling the knob 24 to pull out the tip of the pin 20 from the lock hole 21 to release the locked state, and by narrowing the interval between the two main frames 1 and 1, as shown in FIG. Can be folded.

In this embodiment, the widthwise horizontal handle 15 is provided at the rear ends of the grip portions 14, 14, but without providing the grip portions 14, the widthwise horizontal handle 15 can be moved to the upper ends of the standing shafts 13, 13. It may be provided directly between the parts.

[0012]

As described above, according to the wheelchair of the present invention, the widthwise horizontal handle connecting the upright shafts is provided at the upper end of the pair of upright shafts provided at the rear portion of each main frame. The bendable joint is provided at approximately the middle position of the wheelchair, so that the caregiver can easily operate the steering wheel with one hand without impairing the foldability of the wheelchair, which is a beneficial effect that greatly improves the usability. There is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a wheelchair according to the present invention.

FIG. 2 is a rear view of the wheelchair of FIG. 1;

FIG. 3 is a plan view of a handle of the wheelchair of FIG. 1;

FIG. 4 is an enlarged sectional view of a main part of FIG. 3;

FIG. 5 is a perspective view of the wheelchair of FIG. 1 when folded.

6 is a plan view of the wheelchair of FIG. 5 when the handle is folded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main frame 2 X leg 3 Large wheel 4 Seat seat 5 Backrest seat 6 Free wheel 13 Standing axis 15 Width direction horizontal handle 16 Joint part 17 Joint axis 18a, 18b Axis 20 Pin 21 Lock hole

Claims (2)

[Claims] 1. A pair of main frames are connected by an openable / closable X-leg so as to be freely foldable, a large wheel is rotatably supported on each main frame, and a free wheel is provided at a front portion of each main frame. In a wheelchair in which a seat seat and a backrest seat are stretched between the main frames, a widthwise horizontal direction connecting the upright shafts to an upper end portion of a pair of upright shafts provided at a rear portion of each main frame. A wheelchair comprising a handle, and a resilient joint provided substantially at an intermediate position of the widthwise horizontal handle. 2. The wheelchair according to claim 1, further comprising a detachable locking mechanism for locking the widthwise horizontal handle in a straight line at the joint.