JPS6018477A - Bicycle havig characteristic of monocycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-wheeled bicycle having characteristics of a one-wheeled bicycle.

Conventionally, the saddle and crankshaft of a bicycle are located between the front and rear wheels to ensure stability, and when the bicycle changes direction while moving, the bicycle moves in a large circular orbit.

In addition, with axial rolling wheels, the wheel axis also serves as a crankshaft, and a saddle is installed directly above the wheel, and while the vehicle is running, the rider must step on the pedals to move forward without adjusting the center of gravity. The reality is that it requires a lot of practice, proficiency, and training to be able to ride it well, and it is not possible to increase the speed due to poor stability.

This invention provides a front wheel at the front of a unicycle so as to have both the characteristics of a two-wheeled vehicle and the characteristics of a two-wheeled vehicle.A wheel axle, a crankshaft, and a transmission gear are provided at the center of the rear wheel, and the front and rear wheels are placed at the center of the rear wheel. A gear for changing speed was installed in between, making it possible to use a chain.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, (1) is a rear wheel, which is attached to a hub of a cylindrical rear wheel shaft by means of spokes. (2) is the front wheel, and the upper frame (2) protrudes forward from the second part of the rear wheel frame (7).
3) is pivoted on the tip of the handle (9) so that it can be rotated left and right.
).

(3) is the upper frame, which projects forward from the upper end of the rear wheel vertical frame (7), and has a saddle (8) at the rear;
A bearing is fixed to the front end of the shaft so that the shaft on which the front wheel (2) and the steering wheel (9) are attached can be vertically mounted.

(4) is a vertical frame, the upper end of which is fixed to the middle part of the two-part frame (3), and the lower end fixed to a bearing (5) provided at the tip of the horizontal frame (6) for the rear wheel.

(5) is a bearing, which is fixed to the tip of the rear wheel frame (6) so as to be close to the rear wheel (1), and has a cylindrical shape;
The two-stage chain sprocket α0 and the three-stage rotien sprocket θ0 are fixed coaxially so that they can move in a rectangular direction, and the chain sprocket shaft (5) is attached to the shaft and the vertical frame (4) is fixed on the upper surface. .

Reference numeral (6) denotes a horizontal frame for the rear wheel, which is pivoted on both sides of the crankshaft 02 provided at the center of the rear wheel (1), protrudes forward, and is fixed to a bearing (5).

Reference numeral (7) denotes a vertical frame (7) for the rear wheel, which is pivoted on both sides of the crankshaft α provided at the center of the rear wheel (1), protrudes upward, and is fixed to the rear of the upper frame (3).

(8) is the saddle, and the upper frame directly above the rear @ (1) (
3) You can check the top surface.

(9) is a handle, which is connected above the shaft to which the front wheel (2) is attached, and is pivoted to a bearing provided in front of the upper frame (3).

(10) is a clamp, and the shaft holder A' side is fixed to the crank shirt rQ2 so that the protruding direction is located in the front-rear direction, and a petal θυ is pivotally attached to the tip.

0 is the crankshaft, which is installed at the center of the rear @(1) and rotatably fitted to the rear wheel shaft 0■, and the first stage chain sprocket α→ is fixed to one side so that it can move in a perfect circle. .

θ■ is the rear wheel shaft, which forms a cylindrical shaft, and the inner surface fits with the outer diameter of Q2.

Alternatively, fit with a bearing in between, fix the fork mounting hub on the outer surface, and attach the rear wheel (1) with the fork, while also fixing the fourth stage check 2 and sprocket α force with i2 or free boiling. Interpose and attach the shaft.

04) is the first stage chain sprocket, the center of which is fixed to the crankshaft so that it can move in a perfect circle, and the tooth tips have a shape that meshes with the front stage chain 08).

0υ is the second-stage Cheno sprocket, and the three-stage Cheno sprocket αQ with different numbers of teeth are coaxially fixed and attached to the Cheno sprocket shaft (g) fitted in the bearing (5).

The gear θ is the fourth gear, and is fixed to one side of the rear wheel shaft α, either fixedly or via a free-boiler.

08) is the front stage chain, first stage chain 2, sprocket Q
4) and the second row of Cheno foil 00 without cutting.

θ is the second stage chain, third stage chain sprocket 0υ
and the fourth stage check 2 and sprocket ff71.

In the explanatory diagram of the present invention, the first stage chain sprocket 04)
The number of teeth is 36, and the second stage Cheno sprocket QG is 1.
9i, the third stage chino sprocket QQ has 24 pieces, and the fourth stage chino sprocket Q71 has 16 pieces, but any of the chino sprockets may be used as a multi-stage sprocket for shifting.

Since the structure is as described above, if a rider rides on the saddle (8) of the two-wheeled bicycle of the present invention, holds the handlebar (9) with his/her hand, and alternately steps on the left and right betaru (0]), the crank (10 ), and the first stage chain sprocket a is fixed to the crankshaft a group →
rotates, and the power is transmitted to the second stage Cheno/Subroget by the 0 mark of the front stage Cheno, and the power is transmitted to the third stage Cheno/Subroget (which is fixed on the same axis). 2. Power is transmitted to the Sufrocket (17), the rear wheel shaft α■ rotates, and the rear wheels rotate.

If the 4th stage check 2 sprocket α is fixed to the rear wheel shaft, the bicycle will move forward or backward depending on the direction in which the pedal (11) is pressed, but the 4th stage check 2 sprocket θ'I ), if a ball bearing is inserted between the inner ring and the outer ring, and a freewheel is interposed between the inner ring and the outer ring, and a freewheel is inserted that rotates in only one direction, the claw is held in the opposite direction by the claw and spring. (Continue only moving forward for m.

In the explanatory diagram of the present invention, the first stage chain sprocket 04)
2nd stage Cheno Subroke nt 00, 3rd stage Cheno Sprocket) QO, 4th stage Cheno Sprocket) 0
When power is transmitted to 71, the number of revolutions is about three times as high as the speed, but if you install a variable speed sprocket on one of the sprockets and change the chain, you can change the speed freely.

Place the crankshaft α in the center of the rear wheel (1).
.

The handlebar (1) is designed so that you step on the front wheel (1), so it stays warm while riding. 1 is possible.

As explained above, the front wheel (2) and rear wheel (1) are close together and have a short overall length, so they can be stored in the trunk of a passenger car, and because they are two-wheeled, they can be stored in the same way as a regular bicycle. It is also possible to ride on a hill, and climbing is easy by leaning your body forward when climbing, and riding is comfortable by leaning your body slightly backward when going down a slope.

You can ride it in the same way as a unicycle by lifting the front wheel (2) to maintain balance.
) can be lifted to lift the front wheel (2) to easily travel in a unicycle state, and even if the vehicle loses balance, the front wheel (2) can be lowered and the vehicle can resume normal travel. - The wheeled vehicle can easily move forward, backward, rapidly change directions, rotate, etc., and can be used in a variety of ways for leisure, recreational activities, games, and as a health tool.

In addition, because of its simple configuration, mass production is possible and it is easy to use.
can be provided to i.

[Brief explanation of the drawing]

FIG. 1 shows an overall side view of the invention. FIG. 2 shows a plane view of the power transmission section of the present invention. l...Rear @ 2...Front wheel 3...Upper frame 4
...Vertical frame 5...Bearing 5'...Cheno sprocket shaft 6...Horizontal frame for rear wheel 7...
Vertical frame for rear wheel 8...Saddle 9...Handle IO...Crank 11...Betal 12...Crankshaft 13...Rear wheel shaft 14...1st stage Cheno sprocket 15...・Second Dan Cheno・
Sprocket 16...Third stage chain/streak 1 socket 17...Fourth stage chain 2/Sprocket 18...Front stage chain 19...Rear stage chaino Patent applicant Seki Yama
Masanobu Taniguchi, Patent Attorney, Keio Second Department

Claims (1)

[Claims] A crankshaft (t2) is fitted into the cylindrical rear wheel shaft α, and a fourth stage chain sprocket and seventh rear wheel (1) are fixedly attached to the rear wheel shaft α. At the same time, the first stage chain sprocket 04) is fixed on the rear wheel, and the second stage chain sprocket 0 and the third stage chain sprocket OQ, which have different numbers of teeth, are fixed coaxially and close to the rear wheel (1). Rear wheel horizontal flare A (6) is attached to the bearing (5) at the tip, and the first stage check 2 sprocket 04
) and second stage chain sprocket a, ° −
Circulate and hang the front-stage Cheno sprocket α0 and the rear-stage Cheno sprocket a'hl on the third-stage Cheno sprocket α0 and the fourth-stage Cheno sprocket a'hl.
A saddle (8) is provided above the rear wheel vertical frame (7), and an upper frame (3) is provided that protrudes forward from the upper edge of the rear wheel vertical frame (7).
) A bicycle having characteristics of a unicycle, characterized in that a front wheel (2) is pivotally attached to the tip of the wheel so as to be rotatable left and right.