JPH09290787A - Tumbling risk reduced bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bicycle by which risk of tumbling due to a skid in a curve can be reduced. SOLUTION: Two front wheels 1 of a bicycle are installed with a clearance between them broadened downward in a vision from a front side, and the two wheels 1 are independently shifted by a load equivalent in the arrow 4 direction in an arm connection part 2 and in a point 3. In this way, an inside tire in the two front wheels 1 absorbs a load when a body of the bicycle is tilted for turning a curve, so that a condition hardly causing a skid to the road surface is always maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle that reduces the risk of falling due to slippage in a curve.

[0002]

2. Description of the Related Art In a conventional bicycle, a front wheel and a rear wheel are bent at the same angle in a curve.

[0003]

In the conventional bicycle, when the vehicle body is tilted in a curve, the tires are in contact with the front and rear wheels diagonally with respect to the road surface, so that there is a large risk of slipping, especially on a low μ road surface. . This proposal was made to solve this drawback.

[0004]

[Means for Solving the Problems] When the front wheels of a bicycle are mounted in a V shape when viewed from the front, the two wheels 1 are independent from each other by incorporating a repulsive force such as a spring in the arm connecting portions 2 and 3 of the two wheels 1. The connection points 2 and 3 are moved in the direction of arrow 4 by an amount corresponding to the weight.

[0005]

[Operation] The two front wheels 1 move independently from each other by the amount corresponding to the weight, so that the two wheels 1 maintain a state in which they are unlikely to slip on the road surface at any time during a curve. Moreover, the conventional bicycle does not lose its bendability.

[0006]

Embodiments of the present invention will be described below. (A) Attach the two wheels in a V shape when the front wheel of the bicycle is viewed from the front. Two wheels 1 are rear wheels 5 considering the weight balance of the bicycle.
Use a tire with a narrower width. (B) A repulsive force such as a spring is built in the arm connecting portions 2 and 3 of the two front wheels 1. Consider the repulsive force so that the weight can be absorbed smoothly when the bicycle leans in a curve. (C) The two front wheels 1, left and right, move independently in the direction of arrow 4 at the points of the connecting portions 2 and 3 by an amount corresponding to the weight. The amount of movement of the two wheels 1 in the direction of the arrow 4 considers the inclination angle of the curve of the bicycle. The present invention has the above-mentioned structure, and when it is used,
When the bicycle of the present invention, which operates in the same manner as a conventional bicycle, curves from the straight state 6 to the left and tilts the vehicle body, the tires inside the two wheels 1 absorb the load and turn left 7 or turn left sharply. It becomes 8. At this time, the inner tire is more vertical to the road surface than the conventional bicycle, so it is less slippery than the conventional one. Also, the more the vehicle body is tilted (the sharper the curve is), the wider the ground contact width 9 of the road surface is, and the more the road surface is caught, the more difficult it is to fall.

[0007]

EFFECTS OF THE INVENTION The risk of tipping due to slip on a curve can be reduced, and it is possible to pass the curve more safely than before. Also, because it has three wheels, two front wheels and one rear wheel, it is stable even when going straight, and even beginners can easily drive. Furthermore, since the front wheels absorb the unevenness of the road surface, it is possible to drive safely without being inadvertently picked up by the uneven handle.

[Brief description of drawings]

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

FIG. 2 is a front view showing an embodiment of the present invention (operating state)
It is.

[Explanation of symbols]

 1 Bicycle front wheel 2 Front wheel arm connection (left) 3 Front wheel arm connection (right) 4 Front wheel arm movement direction 5 Bicycle rear wheel 6 Bicycle straight (front view) 7 Bicycle left turn (front) Figure) 8 Bicycle left turn (front view) 9 Ground contact width between two front wheels

Claims (3)

[Claims] 1. A bicycle with reduced risk of falling, comprising two front wheels of a bicycle. 2. A bicycle with reduced risk of falling according to claim 1, wherein the two front wheels 1 of the bicycle are mounted so as to have a V shape when viewed from the front. 3. A repulsive force such as a spring is built in each arm connecting portion 2 and 3 of the front wheel of the bicycle, and the two front wheels 1 are independently left and right in the direction of arrow 4 at the connecting portions 2 and 3. A bicycle with reduced risk of falling according to claims 1 and 2, which is moved by an amount equivalent to the weight.