JPH1094564A - Motor-driven wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strongly constitute the back part of a frame of a vehicle body, to prevent a motor and a gear case from being broken and to prevent running function from being lost when an accident occurs in a motor-driven wheelchair. SOLUTION: In a motor-driven wheelchair wherein a seat is stood on a body frame 3 provided with a front direction handling wheel 1 and back driving wheels 2 and 2, a supporting leg 5 stood on the body frame 3 and left and right center of a back part frame 6 being curved in a loop toward backward are connected with a reinforcing frame 7 and a gear case 9 fitted with a motor is positioned in a space surrounded by the supporting leg 5, the back part frame 6 and the reinforcing frame 7 by the side view and output shafts 10 and 10 projected left and right from the gear case 9 are supported on the back part frame 6 to constitute the motor-driven wheelchair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of an electric wheelchair used by the elderly and the physically handicapped.

[0002]

2. Description of the Related Art An electric wheelchair has a seat and a steering wheel erected on a body frame provided with a traveling device including a front steering wheel and a rear driving wheel, and a passenger sitting on the seat steers. The steering wheel is steered while steering the steering wheel to the left and right. The motor that drives the rear drive wheel has the output shaft for mounting the drive wheel mounted directly to the gear case that projects left and right.

[0003]

Conventional gear cases and motors are supported by a body frame at a position higher than an output shaft so as not to collide with the ground during traveling. Also,
The upper part of this gear case and motor is covered with a thin cover,
I keep it from getting wet with rainwater. Therefore, the gear case and the motor will not collide with the ground and be damaged, but if a strong impact such as a heavy object falls onto the cover is applied from above, the cover will be damaged and the internal gear case and motor will be damaged. In some cases, running became impossible. Therefore,
SUMMARY OF THE INVENTION It is an object of the present invention to make a rear portion of a vehicle body frame strong and to mount a gear case and a motor important for traveling on a portion surrounded by the frame configuration so that the vehicle can travel as much as possible even in an unexpected accident. .

[0004]

According to the present invention, a vehicle body frame 3 having a front steered wheel 1 and a rear drive wheel 2, 2 is provided.
In an electric wheelchair having a seat 4 erected thereon, a support leg 5 erected on the body frame 3 and a left and right center of a rear frame 6 curved in a loop toward the rear are connected by a reinforcing frame 7,
A gear case 9 to which a motor 8 is attached is located in a space surrounded by the support legs 5, a rear frame 6 and a reinforcing frame 7 in a side view, and the output shaft 1 protrudes left and right from the gear case 9.
0, 10 were supported on the rear frame 6.

[0005]

The rear part of the vehicle body frame 3 is composed of a rear frame 6 which is curved in a loop, a support leg 5 which is provided substantially at the center of the body frame 3, and a reinforcing frame 7 which connects the support leg 5 and the rear frame 6. Since the rotor 8 and the gear case 9 are firmly configured and are located in the space surrounded by these three members 5, 6, and 7, they are hardly damaged by impacts from above and below, and the traveling function can be maintained. .

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. One steering wheel 1 is attached to the front of the body frame 3 at the center in the left and right direction, a steering shaft 11 for turning the steering wheel 1 left and right is erected, and a steering head 12 is provided at an upper end of the steering shaft 11. And a loop-shaped steering handle 13. 14 is a front storage bucket. As will be described later in detail, a pair of left and right drive wheels 2 and 2 are provided at a rear portion of the body frame 3, and a seat 4 is provided above a support leg 5 erected on the chassis frame 3. A battery 15, a control box 16, and the like are mounted below the seat 5 and in front of the support legs 5, and a gear case 5 and a capacitor 17 to which the motor 8 is mounted are mounted on the rear side of the support legs 5. To keep out rainwater.

The rear structure of the body frame 3 is shown in FIGS.
As shown in the figure, the left and right side frames 19, 20 and the central frame 21 are connected by a horizontal frame 22, and the cylindrical supporting legs 5 are erected at the left and right centers, and looped from the rear ends of the side frames 19, 20 to the rear. A rear frame 6 having a curved shape and a rear portion bent upward is connected, and an upper portion of the support leg 5 and a left and right center of the rear frame 6 are connected by a pipe-shaped reinforcing frame 7.
A bracket 23 is fixed to the support leg 5 and a capacitor 17
And the code reel 24, and mounting seats 25, 25 are fixed to the left and right sides of the rear frame 6, and the case 26 of the output shafts 10, 10 protruding left and right from the gear case 9 is fixed to the mounting bracket 28 via the rubber bush 27. The upper part of the gear case 9 is mounted via a mounting rubber 30 on a mounting seat 29 protruding from the mounting and reinforcing frame 7. The motor 8 is mounted laterally on the side of the gear case 9. 31 is the cover 18
A mounting seat for mounting As described above, since the motor 8 and the gear case 9 serving as the driving sources are surrounded by the support legs 5, the rear frame 6 and the reinforcing frame 7 in a side view, it is possible to prevent the motor 8 and the gear case 9 from directly hitting and being damaged by impact from above and below. As a result, the running function can be maintained even in an unexpected situation such as a fall.

[Brief description of the drawings]

FIG. 1 is a partially enlarged side view of an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view of the embodiment of the present invention.

FIG. 3 is an overall side view of the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front steering wheel 2 Rear driving wheel 3 Body frame 4 Seat 5 Supporting leg 6 Rear frame 7 Reinforcement frame 8 Motor 9 Gear case 10 Output shaft

Claims (1)

[Claims] An electric wheelchair in which a seat (4) is erected on a body frame (3) having a front steering wheel (1) and rear driving wheels (2), (2). A gear case (5) in which a supporting leg (5) erected on the frame (3) and a left and right center of a rear frame (6) curved in a loop toward the rear are connected by a reinforcing frame (7), and a motor (8) is mounted. 9) The leg (5) and the rear frame (6) in side view.
And output shafts (10), (1) located in a space surrounded by the reinforcing frame (7) and protruding left and right from the gear case (9).
0) is supported on a rear frame (6).