JPH058782A - Small-sized motor vehicle - Google Patents

Abstract

PURPOSE:To enhance the safety of a machine body during running along a curve while simplifying the structure thereof. CONSTITUTION:A rear wheel support frame 11 is coupled to a vehicle body frame 9, rollabilly around the longitudinal axis X and tiltably about the crosswise axis Y, and a pair of left and right damping and rolling returning springs 12, 12 are stretched between the vehicle body frame 9 and a rear wheel support frame 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electric vehicle which is used as a wheelchair by elderly people and people with walking disabilities. More specifically, the present invention relates to a steering wheel, a driver's seat, a drive section, front steering wheels, and The present invention relates to a small electric vehicle having a driving rear wheel.

[0002]

2. Description of the Related Art In a conventional small electric vehicle, the rear wheels are supported by a vehicle body frame simply through a suspension mechanism.

[0003]

Although the suspension mechanism can absorb the vibration of the unevenness of the ground, the suspension mechanism may cause the body to roll over due to centrifugal force when the vehicle makes a sharp curve. It is an object of the present invention to suppress vibration of a machine body and to obtain stability during curve travel while simplifying the structure.

[0004]

To achieve the above object, the present invention is characterized in that the support frame of the rear wheel can be freely rolled around the longitudinal axis and vertically moved around the lateral axis with respect to the vehicle body frame. And a pair of left and right cushioning / rolling return springs are installed across the vehicle body frame and the rear wheel support frame.

[0005]

When the vehicle travels on a curve, the driver leans the body inward of the turn, that is, the vehicle body is rolled inward of the rear wheel, so that the driver can stand the centrifugal force. And in order to exert such a function, for example,
A rear wheel support frame is vertically movably connected to the body frame about a horizontal axis, and a pair of left and right cushioning springs are installed between the rear wheel support frame and the body frame. A front vehicle body frame and a rear vehicle body frame having the rear wheel support frame divided into two parts in the front-rear direction so that the rear vehicle body frame can be rolled with respect to the front vehicle body frame, and the rear vehicle body Compared to the case of providing a pair of left and right rolling return springs with respect to the frame, the buffering and rolling return springs can simplify the structure.

[0006]

As a result of the above structure, it is possible to improve the stability of the machine body while traveling on a curve while simplifying the structure.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows a three-wheeled compact electric vehicle which is used as a wheelchair by elderly people and people with walking disabilities. 1 is a steering wheel, 2 is a driver's seat, 3 is a battery 3a and an electric motor 3b. 4 is a front wheel for steering that is operated by the steering wheel 1, and 6 is a pair of left and right drives that are driven via the electric motor 3b and a differential device 5 integrally connected to the electric motor 3b. It is a rear wheel. The drive rear wheel 6 has an accelerator lever 7 that can be gripped together with the handle rod 1a.
To operate the volume (not shown) in the control panel 8 for acceleration, and to change the high / medium / low speed change switch (not shown) provided in the control panel 8 to 3
The gear can be shifted in stages and can be moved forward and backward by a forward-reverse changeover switch (not shown). Next, the mounting structure of the driving rear wheels to the vehicle body will be described. Figure 1
As shown in FIG. 2, a T-shaped frame 10 in plan view is fitted in a tubular frame 9A in the front-rear direction in the center of the vehicle body frame 9 so as to be rollable around the front-rear axis X and engaged with the annular groove a. The combined bolt B prevents the retainer from coming off in the front-rear direction. A U-shaped rear wheel support frame 11 is connected to the T-shaped frame 10 so as to be vertically swingable around the horizontal axis Y. Further, a pair of left and right cushioning / rolling return springs 12 and 12 are provided between the vehicle body frame 9 and the rear wheel support frame 11.

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

[Brief description of drawings]

FIG. 1 is a side view of a main part.

FIG. 2 is a plan view of the same.

[Fig. 3] Side view of the whole

[Explanation of symbols]

 1 Steering handle 2 Driver's seat 3 Driving part 4 Steering front wheel 6 Driving rear wheel 9 Body frame 11 Rear wheel support frame 12 Spring X Front-rear axis center Y Horizontal axis center

Claims (1)

Claims 1. A steering wheel (1), a driver's seat (2),
In a small electric vehicle including a driving part (3), a steering front wheel (4), and a driving rear wheel (6), a rear wheel support frame (11) is attached to a vehicle body frame (9). It is connected so as to be able to roll around the front-rear axis (X) and move up and down around the horizontal axis (Y), and also serves as a pair of left and right cushions across the body frame (9) and the rear wheel support frame (11). Rolling return springs (12), (12)
A small electric car that has been installed.