RU2372244C2 - Boat-racing-type bicycle - Google Patents

Abstract

FIELD: machine building, mechanics. ^ SUBSTANCE: invention relates to crank drive with sliding saddle. Bicycle frame incorporates guide accommodating saddle slide to move there along 20 cm- to 50 cm-long cranks are arranged in parallel and directed in one direction. Pedals are furnished with feet fasteners. ^ EFFECT: training whatever muscles. ^ 5 dwg

Description

1. Field of technology.

The invention relates to two-wheeled bicycles driven by human muscle power.

2. The prior art.

The applicant knows the closest analogues of the claimed invention.

A bicycle [1] contains front and rear wheels, a handlebar, and a frame. In the guide frame, the seat is movably mounted. A slider with pedals with foot straps is mounted on the seat tube of the frame, and it is connected to a closed flexible link of the rear wheel drive.

The disadvantage of a bicycle is that the pedal path has two dead points and its length between them does not exceed 55 cm.

The bicycle [2] has a front fork with a front wheel, a handlebar connected to the crown of the front fork, a rear fork with a rear wheel, a frame connecting the forks in the form of a horizontal beam. The seat and the slider of the foot bench are mounted on the frame with the ability to move, connected to a closed flexible link of the rear wheel drive.

The disadvantage of a bicycle is that the trajectory of the toes of the legs has two blind spots and its length between them is equal to the sum of the lengths of the arms and legs.

The prototype of the claimed invention, as the closest to it in terms of essential features, the bicycle [3] contains the front and rear wheels, the front fork, the steering wheel, the frame, the saddle and the cranks with pedals connected to the axis of the drive carriage.

The disadvantage of a bicycle is that the drive converts the energy of the muscles of only the legs and that the path of each pedal has two blind spots, and the length of the cranks does not exceed 18 cm.

3. Disclosure of the invention.

The problem to which the invention is directed is that the bicycle drive uses the energy of the muscles of the legs, arms, back and abdominals, and the path of the pedals is longer than without dead spots.

The technical result of the invention is a bicycle driven by cyclic movements of the legs, arms, back and abdominal press, in which for one cycle the pedals on cranks from 20 cm to 50 cm long make one full revolution around the axis of the carriage without dead spots.

The aforementioned task is achieved in that the bicycle, comprising the front and rear wheels, the front fork, the steering wheel, the frame, the seat and the cranks with pedals connected to the axis of the drive carriage, is equipped with a seat slide mounted in the frame guide with the possibility of moving along it parallel and directed to one side with cranks from 20 cm to 50 cm long, pedals with means of fastening the legs. This allows the cyclist, sitting on the seat, holding the steering wheel with his hands, to fasten the legs on the pedals and actuate the bicycle by cyclic movements of the legs, arms, back and abdominal press, in which the pedals make one full revolution around the axis of the carriage without dead spots in one cycle.

4. A brief description of the drawings.

Figure 1 shows a front view and a top view of a bicycle; figure 2 - the first phase of the cyclical movement of the cyclist; figure 3 is a second phase; figure 4 is the third phase; figure 5 is the fourth phase.

5. The best embodiment of the invention.

The bicycle (Fig. 1) contains a front wheel in the front fork, the shaft of which and the handlebar are rotatably connected to a frame 1 in which the rear wheel is mounted. In the frame guide, a seat slider 2 is mounted to move along its slide. Two parallel and one-sided cranks 3 are connected to the drive carriage axis with pedals 4, 5 with leg fasteners, for example, tuffs 6, 7 and heel belts 8.

6. Industrial applicability.

The bike works as follows.

The cyclist sits on seat 2, holds the steering wheel with his hands, securing his feet on pedals 4, 5, makes cyclic movements with his legs, arms, back and abdominals. Each cycle has four phases. The first phase (figure 2) is a seat in the back of the bicycle, the cyclist’s arms are straight, his legs are pulled under him, the pedals move up. In the first half of the phase, the back bends, the seat, moving backward, slows down, and in the middle of the phase stops in the extreme position. In the second half of the phase, the back is straightened, the seat moves forward with acceleration. The second phase (figure 3) - the seat moves forward, the back straightens, arms bend at the elbows, the pedals move forward. At the beginning of the phase to its middle, the legs are tightened under themselves. From the middle of the phase, the legs bend at the knees. The third phase (figure 4) - the seat is in the front position, the back is straight, the arms are bent at the elbows, the legs are unbent at the knees, the pedals are moving down. In the first half of the phase, the seat, moving forward, slows down, and in the middle of the phase stops in the extreme forward position. In the second half of the phase, the seat moves backward with acceleration. The fourth phase (figure 5) - the seat moves backward, the back bends, arms are straightened, the pedals move backward. In the first half of the phase, the legs bend at the knees. In the middle of the phase, their vertical movement stops and the cyclist begins to squeeze them under him.

For four phases, the pedals make a complete revolution around the axis of the carriage.

Information sources.

1. USSR author's certificate No. 1049328 A, IPC B62K 3/00; B62M 1/04, 1983.

2. US Patent No. 6,609,724 B1, IPC B62M 1/04; B62K 3/04, 2003.

3. Kradinov E.B. "Bicycle. Device. Operation. Repair", M., 1994, p.17.

Claims (1)

A bicycle comprising a front wheel in a front fork, the shaft of which and the handlebar are rotatably connected to a frame in which the rear wheel is mounted, a seat connected to the axis of the carriage of the crank with pedals, characterized in that the frame guide is mounted to move along it seat slider, cranks from 20 to 50 cm long are parallel and directed in one direction, the pedals are equipped with means for fastening the legs.

Images