Rear-pedaling standing type bicycle structure

The present invention discloses a rear-pedaling standing type bicycle structure having a driving means installed at a front end of a bicycle frame and proximate to a corresponding line of front and rear wheels, and pedals pivotally coupled to both lateral sides of the front end of the bicycle frame for up and down movements. The driving means can be driven up and down alternately by the left and right pedals, and a link wheel is provided for transmitting kinetic forces to the rear wheel to drive the bicycle, so that the bicycle can be operated and driven in a special unique way to achieve the effects of expanding the exercising range and giving more fun to the exercise and game.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a rear-pedaling standing type bicycle structure, more particularly to a rear-pedaling standing type bicycle structure that provides a simple, easy, convenient and unique way of operating a bicycle to achieve the effects of expanding the exercising range and giving more fun to the exercise and game.

2. Description of the Related Art

In general, a bicycle is driven to move forward by pedaling on a pair of pedals installed with an included angle of 180 degrees for a circumferential movement, and wheels of the bicycle are driven by related transmission components (including a crankset, a chain and a flywheel, etc), and the wheels keep rotating to drive the bicycle body forward. Further, a general bicycle has a seat cushion provided for a bicycle rider to sit, so that the body weight of the rider is supported by the seat cushion to allow both legs to apply a sufficient force for a smooth and safe circumferential movement of the pedals. Although the traditional bicycles can achieve the transportation purpose, the rider's upper body movement is limited by the rider's sitting on the seat cushion, and the exercise effect is not as expected, and the fun of riding the bicycle is not as good. Traditional bicycles no longer provide a good motive for riders to ride the bicycles.

SUMMARY OF THE INVENTION

Therefore, it is a primary objective of the present invention to provide a rear-pedaling standing type bicycle structure, wherein a driving means is installed at a front end of a bicycle frame proximate to a corresponding line of the front and rear wheels, and pedals are pivotally coupled to both lateral sides of the front end of the bicycle frame and moved up and down, such that when the left and right pedals are moved up and down alternately, a crankset of the driving means is rotated in an opposite direction, and the kinetic force of a link wheel is transmitted to a rear wheel to move the bicycle forward, and the rider can pedal by both legs while standing. The operation of the bicycle not only achieves the effect of expanding the exercise range, but also provides a unique way of operating and riding the bicycle to achieve the transportation purpose as well as the fun of riding a bicycle.

Another objective of the present invention is to provide a rear-pedaling standing type bicycle structure, wherein a crankset of the driving means is installed on a corresponding line of the front and rear wheels and the left and right pedals for driving the crankset are disposed equidistantly from each other and on both lateral sides, and the distance between the left and right pedals can be reduced substantially, and a force applying point for a rider's left and right legs to pedal can be situated evenly on both lateral sides of the corresponding line of the front and rear wheels. As to the standing rider who steps on the pedals, the pedal movement can be very smooth, convenient, natural and comfortable, and the center of gravity can be maintained on the corresponding line of the front and rear wheels to achieve the stable, deviation free and safe riding effects.

To make it easier for our examiner to understand the objects, characteristics and effects of the present invention, we use preferred embodiments accompanied with related drawings for the detailed description of the present invention as follows:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1 to 3for a rear-pedaling standing type bicycle structure of the present invention, a front wheel11, a vertical tube12and a handle13are installed at the front of a bicycle frame10through a front tube101and a front fork102, and a rear wheel14is installed at the rear end of the bicycle frame10through an axle141, and a shaft201is installed at a position proximate to the front end of the bicycle frame10, a crankset202is installed at the shaft201, a crank203is installed with an included angle of 180 degrees and disposed on both ends of the shaft201, a driving means20pivotally connected to a transmission module at an end of a driving member204away from the crank crane203of the shaft201, and pedals30are pivotally connected on both lateral sides of the front end of the bicycle frame10. The crankset202of the driving means20is situated on a corresponding line of the front and rear wheels11,14. The left and right pedals30are disposed equidistantly on both lateral sides of the corresponding line of front and rear wheels11,14, and the front end is pivotally coupled to the bicycle frame10through a pivot301, such that the left and right pedals30can move up and down at the rear end. The bottom of the left and right pedals30include a longitudinal slide passage302provided for embedding and sliding a driving member204at another end of the left and right cranks203(as shown inFIG. 3), so that the left and right pedals30can move up and down alternately for driving and rotating the driving member204, the crank, the shaft201and the crankset202directly.

A driven gear wheel21is installed at a rear end of the bicycle frame10, and a link wheel22is installed between the crankset202of the driving means20and the driven gear wheel21, and a first driving chain23is installed between the crankset202and the driven gear wheel21, such that the link wheel22is driven by the external side of the first driving chain23to rotate in an opposite direction. Further, a transmission wheel24is installed coaxially at another end of the link wheel22, so that a second driving chain25can transmit a kinetic force to a flywheel26of a rear wheel axle141.

Since the left and right pedals30are swung to move up and down alternately with a turning point of a pivot301, a rider can apply a force to the driving member204and the crank203to rotate in an opposite direction when stepping on the left and right pedals30by both legs and while standing, such that the shaft201and the crankset202are driven to rotate in opposite directions. In other words, the crankset is rotated in a direction opposite to that of a general bicycle. The external side of the first driving chain23installed around and between the crankset202and the driven gear wheel21is provided for driving the link wheel22(which is installed below the first driving chain23as shown inFIG. 1), and the link wheel22is driven to rotate clockwise directly, such that the coaxial transmission wheel24can be rotated clockwise through the rear wheel axle141driven by the second driving chain25, and the rear wheel axle141together with the rear wheel14can be rotated clockwise to drive the bicycle body forward.

With the structure of the invention as shown inFIG. 4, a rider can hold the handle13by both hands and step on the left and right pedals30by both legs while standing. The left and right pedals30are swung to move up and down by using a pivot301at the front end as a turning point, and the driving means20corresponds to an included angle of 180 degrees, and a driving member204is installed at an end of the crank203away from the shaft201and slid precisely in a longitudinal slide passage302disposed at the bottom of the left and right pedals30. When a bicycle rider pedals the pedals30, a force is applied directly to the driving member204to drive the crankset202on the shaft201to rotate in an opposite direction. In the meantime, the link wheel22installed between the crankset202and the driven gear wheel21is installed around and between the crankset202and the driven gear wheel21and driven by the external side of the first driving chain23, so that the rotating direction is opposite to the rotation of the crankset202, and the transmission wheel24installed coaxially with the link wheel23can transmit a kinetic force to the rear wheel axle141and the rear wheel14through the second chain25in order to rotate the rear wheel14clockwise at the same time to drive the bicycle body forward and achieve the bicycle traveling effect.

The rider's legs step on the left and right pedals30alternately while standing, so that the crankset202of the driving means20is rotated in an opposite direction to drive the rear wheel14, and drive the bicycle body to move forward smoothly. The operation of the bicycle extends the exercising range and gives more fun to the exercise and game.

Since the crankset202of the driving means20is installed on the corresponding line of the front and rear wheels11,14, the left and right pedals30can be disposed equidistantly from both lateral sides of the corresponding line of the front and rear wheels11,14to substantially reduce the distance between the left and right pedals30and the force applying point of the rider's left and right legs to pedal is disposed evenly on the lateral sides of the corresponding line of the front and rear wheels11,14. As to the standing rider, the pedaling operation made by both legs is very smooth, natural convenient and comfortable. The center of gravity can be maintained on the corresponding line of the front and rear wheels11,14to give a stable, deviation free and safe riding effect.

InFIG. 5, the link wheel22′ installed between the crankset202and the driven gear wheel21can be installed above the first driving chain23to convert the force of driving the crankset202of the driving means20in an opposite direction into a clockwise direction. Similarly, the link wheel22′ can be driven clockwise by the external side of the first driving chain23, and the coaxial transmission wheel24can transmit the clockwise rotating driving force to the rear wheel14to achieve the effect of driving the bicycle body smoothly.