JPH058781A - Motor-driven tricycle. - Google Patents

Abstract

PURPOSE:To provide a motor drive tricycle which can reduce the possibility of occurrence of a roll-over accident even during abrupt turn. CONSTITUTION:In a motor driven tricycle having a front wheel 1 and two rear wheels 2, auxiliary wheels 7, 8 are rotatably provided on both sides of the front wheel 3, with a predetermined space therebetween. Accordingly, it is possible to effectively reduce the possibility of occurrence of a roll-over accident.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric three-wheeled vehicle, and more particularly to an electric three-wheeled vehicle as a wheelchair that runs on a battery as a power source.

[0002]

BACKGROUND ART Many electric tricycles generally have a traveling speed of about 6 [Km / h]. For this reason, it is one of the models that are in great demand because they can be turned relatively smoothly and a small turn is effective.

[0003]

However, in the above-mentioned conventional example, it is not easy to change the traveling direction, for example, when going down a slope. Especially the running speed is 6 [Km
/ H] or less, a lot of skill is required to take the intended course without overturning when changing the direction such as a sharp turn, because the position of the weight of the occupant changes and the inertial force acts. There was an inconvenience.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric tricycle capable of improving the disadvantages of the prior art and reducing the occurrence of a rollover accident even during a sharp turn. To do.

[0005]

According to the present invention, an electric tricycle having two rear wheels and one front wheel is equipped with auxiliary wheels rotatably arranged at predetermined intervals on both sides of the front wheel. Is taking. This is intended to achieve the above-mentioned object.

[0006]

When the vehicle makes a sharp turn, the entire vehicle body leans outward, and the auxiliary wheels 7 or 8 rotate in contact with the ground. Therefore, unless the position of the center of gravity of the entire vehicle body is outside the auxiliary wheels 7 or 8, the rotation supporting action of the auxiliary wheels 7 or 8 allows the entire vehicle body to change its traveling direction relatively smoothly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, in FIGS. 1 to 4, reference numeral 1 indicates a frame. The frame 1 is equipped with two rear wheels 2 and one front wheel 3. Two batteries 4 and 4 are mounted on the frame 1 adjacent to the rear wheel 2. A passenger seat 60 is provided on the upper portion of the two batteries 4 and 4. Code 5
Indicates a vehicle body floor incorporated on the frame 1 described above. This vehicle body floor 5 is inserted, and the steering rod 6 for the front wheels 3 is inserted.
A is equipped, and the handle 6 is equipped on the upper end of the control rod 6A. Reference numeral 51.52 (see FIG. 5) indicates a rear fall prevention auxiliary wheel provided on the rear side of the rear wheel 2.

On the back side of the vehicle body floor 5, auxiliary wheels 7, which are rotatably arranged at predetermined intervals on both sides of the front wheel 3,
Eight are equipped. The auxiliary wheels 7 and 8 are equipped so that the rotation direction thereof is slightly inward. Reference numeral 7A indicates a bracket for the auxiliary wheel 7. The auxiliary wheel 7 is connected to and supported by the frame 1 via the bracket 7A. Similarly, through the bracket 8A, the auxiliary wheel 8
Are connected to and supported by the frame 1.

The auxiliary wheels 7 and 8 are further mounted inward in a direction in which the rotation direction thereof is substantially the same as the maximum rotation angle of the handlebar connected to the front wheel 3. In Figure 3,
The inclination angle Θ of the setting direction of the auxiliary wheel 7 with respect to the traveling direction in this case is shown. The auxiliary wheels 8 are also mounted on the vehicle body floor 5 in line symmetry with the front wheel 3 interposed therebetween.

FIG. 4 shows the mounting height of the auxiliary wheels 7 and 8 (height floating from the ground). Specifically, assuming that the auxiliary wheels 7 and 8 are installed at positions close to the side ends of the vehicle body floor 5, the front wheels 3 contact the ground and the lower end surfaces of the left and right auxiliary wheels 7 and 8 described above. Let α be the slope of the line connecting
For example, α is set to ± 10 °. Further, in this case, when the auxiliary wheels 7 or 8 are in contact with the ground, the rotation support shafts 7B and 8B are installed so as to be substantially parallel to the ground.

For this reason, in the above embodiment, even if the entire vehicle body is tilted outward due to a sharp turn, the auxiliary wheels 7 or 8 rotate in contact with the ground, so that the position of the center of gravity of the entire vehicle body is changed. Auxiliary wheel 7 unless it goes outside 7 or 8.
Alternatively, due to the rotation support action of the vehicle body 8, the traveling direction of the entire vehicle body can be changed relatively smoothly.

[0012]

Since the present invention is constructed and functions as described above, according to the present invention, it is possible to effectively reduce the occurrence of a rollover accident by the action of the auxiliary wheels even during a sharp turn. It is possible to provide a superior electric tricycle that does not.

[Brief description of drawings]

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

FIG. 2 is a structural view of the auxiliary wheel in FIG. 1 as seen from the direction of arrow A in FIG.

FIG. 3 is a detailed explanatory view showing a portion B in FIG.

FIG. 4 is an explanatory view of the auxiliary wheel in FIG. 1 viewed from the direction of arrow C in the same figure.

FIG. 5 is an explanatory view showing auxiliary wheels mounted on a rear wheel portion.

[Explanation of symbols] 1 frame 2 rear wheels 3 front wheels 7,8 auxiliary wheels

Claims (3)

[Claims] 1. An electric tricycle having two rear wheels and one front wheel, wherein electric tricycles equipped with auxiliary wheels rotatably arranged at predetermined intervals on both sides of the front wheel. 2. The auxiliary wheel is equipped so that the rotation direction thereof is slightly inward.
Electric tricycle described. 3. The electric motor according to claim 1, wherein the auxiliary wheel is mounted inward in a rotational direction substantially the same as a maximum rotation angle of a handle of the front wheel. Tricycle.