JPH1016855A - Bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bicycle constructed to be light in weight and small in size and used for safe practicing for riding a one wheel vehicle. SOLUTION: In a bicycle having a front wheel 1 and a rear wheel 2, the rear wheel 2 is pivotally supported in the lower end of a seat pillar body 3 having a saddle 4 in an upper end and a pedal 6 is attached to the shaft 5 of the rear wheel 2. The rear wheel 2 is directly rotating by pressing the pedal 6 and thus the conventional necessity of providing a power transmission mechanism such as a chain wheel or a chain is eliminated. Also, the structure of the rear side of the bicycle is like that of a one wheel vehicle and this bicycle is used feeling as if riding a one wheel vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-wheeled bicycle.

[0002]

2. Description of the Related Art As shown in FIG. 2, a bicycle generally has a front wheel 1 attached to a front portion of a frame 25 and a rear wheel 2 attached to a rear portion thereof, and a handle 13 for steering the front wheel 1 is provided at a front end of the frame 25. A saddle 4 is provided between the front wheel 1 and the rear wheel 2 at the upper end of the rear portion of the frame 25.
A chain wheel 26 is attached to the lower end of the frame 25 between the
And a chain 28 is suspended between a chain wheel 26 and a rear chain wheel 27 provided on the shaft of the rear wheel 2.

As described above, the bicycle is formed by assembling a large number of parts, so that the weight becomes heavy. In addition, a chain 28 is suspended between the chain wheel 26 and the rear chain wheel 27 of the rear wheel 2, and the bicycle 6 By rotating the chain wheel 26, the power is transmitted to the rear wheel 2 by the chain 28 to rotate the chain wheel 26.
Since it is necessary to provide the chain wheel 26 and the chain 28 between the front wheel 1 and the rear wheel 2, the distance (wheel base) between the front wheel 1 and the rear wheel 2 becomes longer, and the entire bicycle becomes larger. Met.

[0004]

As described above, the conventional bicycle is formed in a heavy and large form, and it is difficult to store the bicycle in a small house such as an apartment house. there were. In recent years, the use of unicycles by elementary school children has become widespread. Unicycles are designed to run by sitting on a saddle just above the wheels and rowing the pedals provided directly on the wheel shafts to rotate the wheels.However, unicycles have a high risk of falling in the front-rear direction and are safe. It was difficult to practice.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a bicycle that can be formed to be lightweight and small, and that can be used for safe practice on a unicycle. Is what you do.

[0006]

The bicycle according to the present invention comprises:
In a two-wheeled bicycle having a front wheel 1 and a rear wheel 2, a rear wheel 2 is pivotally supported at a lower end of a seat pillar 3 provided with a saddle 4 at an upper end, and a pedal 6 is attached to a shaft 5 of the rear wheel 2. It is a feature. Further, the present invention is characterized in that the above-mentioned seat pillar 3 is inclined forward.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention.
It will be described based on. Although a general bicycle has an inverted triangular frame as a skeleton, in the bicycle of the present invention, a skeleton is formed by only one rod 10 made of a metal pipe or the like. The pipe 11 is attached by welding or the like, and the column 3 is attached to the rear end of the rod 10.

A handle stem 12 is inserted into the front end head pipe 11 so as to be rotatable in the horizontal direction. A handlebar 13 having grips at both ends is attached to the upper end of the handle stem 12, and a forked front fork 14 is attached to the lower end of the handle stem 12. The front wheel 1 has a shaft 15 pivotally attached to a lower end of the front fork 14. Reference numeral 16 denotes a brake lever attached to the handlebar 13, which is connected to a brake device 17 provided on the front wheel 1 via a wire 18.
When the brake lever 16 is pulled, the brake device 1
7, the front wheels 1 can be braked.

Further, the seat post 3 includes a rear pipe 19 attached to the rear end of the rod 10 by welding or the like, a bifurcated rear fork 20 attached to the lower end of the rear pipe 19, and a seat post 21 whose lower part is inserted into the rear pipe 19. The saddle 4 is attached to the upper end of the seat post 21. The seat post 21 is inserted into the rear pipe 19 so as to be freely adjustable in height, and the seat post 21 is fixed to the rear pipe 19 with bolts or the like.

The rear wheel 2 is formed to have a larger diameter than the front wheel 1, and its shaft 5 is pivotally supported at the lower end of a rear fork 20. The rear wheel 2 is thus pivotally attached to the lower end of the column 3, but the column 3 is slightly inclined forward so that the saddle 4 at the upper end of the column 3 is attached to the rear wheel 2. Is located slightly forward of the shaft 5 of the vehicle. The shaft 5 of the rear wheel 2
Are provided with pedals 6 at both ends. The pedal 6 is attached to the distal end of the crank 22, and the pedal 6 is attached to the shaft 5 by connecting and fixing the base of the crank 22 to the shaft 5.

As described above, the two-wheeled bicycle according to the present invention can be formed. To drive this bicycle, sit on the saddle 4 and hold the grip of the handle 13 with both hands to operate the pedal. The rider 6 can rotate the rear wheel 2 to run the bicycle by pedaling, and can operate the handle 13 to change the direction of the front wheel 1 to change the traveling direction. Here, since the diameter of the rear wheel 2 is formed to be larger than that of the front wheel 1 as described above, it is possible to achieve a high traveling speed when traveling by directly pedaling the pedal 6 and rotating the rear wheel 2. It is.

As described above, when riding a bicycle, the saddle 4 is slightly inclined forward so that the saddle 4 is located slightly forward of the shaft 5 of the rear wheel 2 as described above. The center of gravity when sitting on the saddle 4 will be located slightly forward from the axis 5 of the rear wheel 2, so that the center of gravity will not be backward and it will not fall over on its back, and the bicycle will be stable. You can drive.

As described above, since the pedal 6 is directly connected to the rear wheel 2 and the rear wheel 2 can be directly driven to rotate by pedaling the pedal 6, the pedal 6 can be directly rotated and driven like a conventional bicycle. There is no need to provide a chain to transmit power to the rear wheels. Therefore, it is not necessary to provide a chain wheel or a chain between the front wheel 1 and the rear wheel 2, and the distance (wheel base) between the front wheel 1 and the rear wheel 2 can be shortened. As a result, since a power transmission mechanism such as a chain wheel or a chain is not required, the number of parts can be reduced and the bicycle can be formed lightweight. And since a bicycle can be formed small and lightweight in this way, it is easy to store it even in a small house such as a condominium or other condominium, and there is no trouble in putting a bicycle in place. Things.

Further, in the bicycle according to the present invention, a saddle 4 is provided at the upper end of the column 3, the rear wheel 2 is pivotally supported at the lower end of the column 3, and a pedal 6 is attached to a shaft 5 of the rear wheel 2. Due to the structure, the rear part of the bicycle has a structure similar to a unicycle. In other words, the unicycle is configured such that the wheelchair is seated on the saddle above the wheel and the wheel is rotated by a pedal provided directly on the shaft of the wheel. , Shaft 5 of rear wheel 2
The rear wheel 2 is rotated by a pedal 6 provided directly on the rear wheel 2. Therefore, it is possible to ride the bicycle of the present invention with the same feeling as riding a unicycle, and since the front wheel 1 is located in front of the rear wheel 2, there is a danger of falling down in the front-rear direction like a unicycle. Therefore, the practice of riding a unicycle can be safely performed by the bicycle of the present invention.

When the handle 13 is lifted so that the front wheel 1 is slightly lifted, the column 3 becomes substantially vertical and the vehicle can run on one wheel of the rear wheel 2. They can be driven in the same way. In addition, it is possible to perform an acrobatic riding by lifting the handle 13 and riding with the front wheel 1 largely lifted, and it is also possible to use the bicycle of the present invention in a competition in which the riding performance is competed. You can do it.

[0016]

As described above, according to the present invention, in a two-wheeled bicycle having a front wheel and a rear wheel, a rear wheel is pivotally supported at a lower end of a seat column having a saddle provided at an upper end thereof. Since the pedal is provided on the shaft, the rear wheel can be rotated directly by pedaling, and a power transmission mechanism such as a chain wheel or chain is provided between the front wheel and the rear wheel like a conventional bicycle This eliminates the need for a compact wheelbase that can be formed with a shorter wheelbase and lighter weight, making it easier to store even in a narrow house such as an apartment house. This eliminates the hassle of having a place to store bicycles. In addition, the structure of the rear part of the bicycle is similar to that of a unicycle, so that the rider can ride with the same feeling as riding a unicycle. Thus, there is little danger of falling down in the front-rear direction, and the user can safely practice riding on a unicycle.

Further, in the present invention, since the seat body is inclined forward, the saddle at the upper end of the seat body is located slightly forward of the axis of the rear wheel, and the center of gravity when sitting on the saddle is the rear wheel. The bicycle is positioned slightly forward of the axis of the bicycle, and the bicycle can be stably driven without falling backwards.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing an example of a conventional bicycle.

[Explanation of symbols]

 Reference Signs List 1 front wheel 2 rear wheel 3 seat pillar 4 saddle 5 axle 6 pedal

Claims (2)

[Claims] 1. A two-wheeled bicycle having a front wheel and a rear wheel, wherein a rear wheel is pivotally supported at a lower end of a seat column having a saddle at an upper end, and a pedal is provided on a shaft of the rear wheel. bicycle. 2. The bicycle according to claim 1, wherein the column is inclined forward.