JP2006264655A - Pedal rotation force increasing and bodily burden reducing device for bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bicycle using a drum hanger (circular disc hanger) instead of a conventional hanger shaft, realizing increase of propulsion force by rotation force of circular movement with a chain wheel interlocked with the hanger and reducing loss of bodily strength. <P>SOLUTION: (1) The drum hanger (circular disc hanger) having a large diameter of large circumference is used. (2) An enlargement bottom frame for storing the drum hanger is used. (3) Peripheries of the drum hanger and the chain wheel are made same. (4) The drum hanger and the chain wheel are connected/fixed by a joint arm. (5) A left crank is fixed to a position near an outer periphery of the drum hanger and a right crank is fixed to a position near an outer periphery of the chain wheel. However, they are positioned at an opposite position relative to the crank of the drum hanger. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Detailed Description of the Invention

The present invention changes the power transmission method of a conventional bicycle to increase the rotational force and increase the propulsive force, and reduce the physical burden, so-called the heart of the heart of the bicycle drive part. This is a technology that reinforces the rotational force of a chain wheel with a drum hanger.

In the conventional bicycle drive, the force obtained by the rotation of the left and right cranks by the pedaling force is transmitted to the chain wheel through the extremely thin hanger shaft of the bottom bracket.

Problems to be solved by the invention

The problem with conventional bicycles is that even a gentle climb is slow and the physical strength is consumed and the burden is high. The pedal force is received by the pedal, and the crank arm receives the pedal with a thin hanger shaft. In other words, through the rotation of the small-diameter shaft, power is transmitted to the large-diameter and large-circle chain wheel, so that the physical strength is burdened and the propulsive force is also reduced. It is equivalent to rotating the millstone as if it is rotating hard with the force of the center axis of the millstone, which is the same as consuming a large amount of force and consuming physical strength.

Means for solving the problem

Therefore, the thin hanger shaft is canceled and the first to fifth points of the present invention are as follows.
1st point A large-diameter drum hanger with a large circumference (disc hanger) is used.
2nd point Use an enlarged bottom frame to store the drum hanger.
Third point The drum hanger and chain wheel should be the same.
4th point Drum hanger and chain shaft are connected and fixed by joint arm.
Fifth point: The left crank is fixed at a position close to the outer periphery of the drum hanger, and the right crank is fixed at a position close to the outer periphery of the chain wheel (however, the position is opposite to the drum hanger crank).

In the present invention, the relationship between the conventional bottom bracket and the hanger shaft is changed, and the bottom bracket portion is greatly expanded to form a one-bottom frame of a large circle that can accommodate a drum hanger (disc hanger).
Put 6 drum hangers (disc hangers) in 1 bottom frame. 2 Duct seals 5a, 5b left and right bearings 4a, 4b Left and right sealing 3a, 3b Left and right in one order.

The drum hanger and chain wheel are both attached and fixed to four joint holes provided at four locations near the outer periphery with four 8-joint arms.

The left crank is jointed to the left side of the drum hanger and one point on its outer periphery, and the right crank is attached to one point on the outer periphery of the chain wheel (one point opposite to the left crank).

The invention's effect

The present invention is implemented in the form as described above and exhibits the following effects.

The left and right cranks are stepped on at the same time, and force is applied to the outer circumference of the drum hanger and chain wheel that are directly connected on the same circumference. Is obtained.

The increase of the rotational force by the conversion of the rotational transmission means that the heart part is strengthened in humans and the engine part is strengthened in automobiles, and the propulsive force is increased. This invention is exerted on the uphill and the head wind where this propulsive force is the weakest point of the bicycle, and greatly contributes to the reduction of the physical strength burden.

Conventionally, the change gear (shift lever) covers the out gear and the inner gear with a few of the weak points of the bicycle. However, the exhaustion of physical strength is quite intense. In other words, this drive performs a circular motion that draws a large circle around the outer periphery of the drum hanger with the left crank, and a right crank performs a circular motion that draws a large circle around the outer periphery of the chain wheel. This large circular motion becomes a powerful rotational force and a driving force. In addition, since the left and right drum hangers and the chain wheel are interlocked with each other by the arm, the rotational force of both cranks that are footed on both the left and right sides is further increased by a synergistic effect, and can be started smoothly.

However, it is possible to use an out gear, an inner gear, and a change lever, which are conventional transmissions, together with the device of the present invention, and the bicycle can be further improved by using the transmission together.

It is sectional drawing of a leg row apparatus. It is a perspective view of a drum hanger (disk hanger) and a chain wheel of a leg row device. It is a disassembled perspective view of a leg rowing device. It is a fragmentary sectional view of a leg rowing device.

Claims (5)

The conventional hanger shaft is changed to a drum hanger (disc hanger). Enlarged bottom frame that can accommodate drum hangers. Make the drum hanger and chain wheel (gear plate) the same size (same circumference). Connect the drum hanger and chain wheel directly with the joint arm. The left crank arm is fixed at a position close to the outer periphery of the left drum hanger. The right crank arm is fixed near the outer periphery of the right chain wheel (the opposite position of the left crank arm).

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