JPH0751318A - Motorized wheelchair - Google Patents

Abstract

PURPOSE:To provide an inexpensive mechanism capable of surely inhibiting the backward tilting of the body of an attendant-operated motorized wheelchair beyond a predetermined tilt angle. CONSTITUTION:A steering front wheel 2 and driving rear wheels 3 are supported on a body frame 1, a control handle 6 to be operated by an attendant is supported on the body frame 1 at a position behind a seat 4, an interlocking member 9 for steering the steering front wheel 2 is connected to the lower end of the control handle 6, and a tilt limiting member 13 is mounted on the lower end of the extension of the control handle 6 to limit the backward tilting of the body frame 1 beyond a predetermined tilt angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic wheelchair constructed so that a caregiver operates a person who has difficulty walking.

[0002]

2. Description of the Related Art As an electric wheelchair of this type, a steering wheel for a caregiver is provided on a vehicle body having front steering wheels and rear driving wheels in a state of being arranged behind a seat. It is known that an interlocking member for changing the lateral direction of the steering wheel is attached to the lower end side of the steering handle.

[0003]

A conventional caregiver-operated electric wheelchair is generally equipped with a lightweight member such as a steering wheel at the front end of the vehicle body. Generally, the front end side of the vehicle body is light and the center of gravity of the vehicle body is high. Since the vehicle is leaning toward the rear end, the vehicle body is likely to lean backward when riding on a pebbles during running, and the caregiver needs to support the leaning, which may cause the caregiver to bear a great deal of labor. It should be noted that if a means for preventing the rearward leaning such as auxiliary wheels is provided at the rear part of the vehicle body, the labor burden on the caregiver will be reduced, but this will lead to an increase in cost and an economic burden on the user. It was something to call. The present invention has been made in view of such an actual situation, and an object thereof is to surely prevent the vehicle body from falling over to the rear side, and to make the means therefor simple and inexpensive. I am trying.

[0004]

A feature of the present invention is that a steering wheel for a caregiver is provided in a vehicle body having front steering wheels and rear driving wheels in a state where the steering handles are arranged behind a seat. In an electric wheelchair in which an interlocking member for changing the left / right direction of the front wheels is attached to the lower end side of the steering wheel, a rearward tilt regulation for grounding and preventing further rearward tilt when the vehicle body tilts backward by a set amount A tool is provided at the lower extension end of the steering handle.

[0005]

According to the above construction, when the vehicle leans on a small stone or the like during traveling and the vehicle body leans backward by a set amount, the backward leaning restrictor comes into contact with the ground to reliably prevent the vehicle body from leaning further backward. , The caregiver does not need to support the steering wheel to prevent the car body from leaning backwards. In addition, since the rearward tilt restricting device is attached to the lower end of the steering handle that originally extends downward to attach the interlocking member for changing the left-right direction of the steering front wheel, the frame etc. is lowered from the vehicle body. There is no need to take a form such as mounting a rearward tilt restrictor separately on the vehicle, and a simple and inexpensive modification by simply adding a rear roll prevention tool to the lower end of the steering handle is sufficient, which is also advantageous in terms of manufacturing and cost Is.

[0006]

As a result, it is possible to provide an electric wheelchair for manipulating a caregiver, which can reliably prevent the vehicle from tilting beyond the setting of the vehicle body and is easy to modify, and which is further excellent in terms of safety, manufacturing and cost. It became so.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG. 1, a vehicle body 1 having a pair of left and right steering front wheels 2 and a pair of left and right rear wheels 3 which can be driven by an electric motor is provided with a seat 4 on which a person having difficulty walking is placed.
The step 5 for the passengers to put their feet on and the adjustable front and rear position, the headlight 7, and the steering wheel 6 for the caregiver located behind the seat 4 are provided to control the speed and brakes. The operation part 6a provided is provided on the upper part of the steering wheel 6,
An electric wheelchair for carer operation is constructed.

The steering handlebar 6 is rotatably mounted on the support portion 8 of the vehicle body 1, the lower end of the steering handlebar 6 is extended to near the ground, and the left and right ends of the steering handlebar 6 are directed to the left and right. The interlocking member 9 for changing is attached. That is, as shown in FIG. 2, an axle 10 that connects the left and right steering front wheels 2 is rotatably attached to the vehicle body 1 about a vertically oriented support shaft 11 and extends to the left and right at the lower end side of the steering handlebar 6. The left and right ends of the arm 12 attached to the vehicle and the left and right portions of the axle 10 are connected by a pair of left and right interlocking members 9 such as wires and rods, and the left and right direction of the steering front wheel 2 can be changed by rotating the steering handle 6. It is configured as follows.

A rearward tilt restricting wheel 13 for preventing the rearward tilt of the vehicle body 1 more than a set amount is attached to the lower end of the steering handle 6 to prevent the vehicle body 1 from leaning backward due to riding on a small stone or the like during traveling. Also, it is configured to reliably prevent the vehicle body 1 from tilting backward by more than a set amount by contacting the rearward tilt restricting wheel body 13 with the ground.

[Other Embodiments] The specific structure in which one or two steering front wheels 2 are interlocked with a steering handle 6 in order to change the lateral direction thereof can be appropriately changed. In order to prevent the rearward leaning of the vehicle body 1 from coming into contact with the ground, an appropriate member such as a sled body may be provided in place of the wheel body 13, and they are collectively referred to as a rearward roll prevention tool 13.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of wheelchair

FIG. 2 is a plan view of a front wheel steering structure.

[Explanation of reference numerals] 1 vehicle body 2 front wheel for steering 3 rear wheel for driving 4 seat 6 steering wheel 9 interlocking member 13 rearward tilting restraint device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ganshiro Kawabata 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (1)

[Claims] 1. Front steering wheel (2) and rear driving wheel (3)
A steering wheel (6) for a caregiver on a car body (1) having
Is provided behind the seat (4), and an interlocking member (9) for changing the left-right direction of the steering front wheel (2) is attached to the lower end side of the steering handle (6). In a wheelchair, a rearward tilt restricting device (13) is provided at the downward extension end of the steering handle (6) to ground and prevent further rearward tilt when the vehicle body (1) tilts backward by a set amount. There is an electric wheelchair.