Leisure fitness bike

A leisure fitness bike has a front frame hinged to a rear frame, a handlebar and a front wheel. A pedal body is installed at upper and lower ends of the front frame. The rear frame includes a saddle, a rear wheel and a rear wheel transmission device. A driving device is between the front and rear frames and coupled to a rear wheel transmission device. After a rider sits on the saddle and puts both hands and legs onto the handlebar and the pedal body, the front frame is moved forward and backward by stretching and contracting forces, and the driving device drives the rear wheel transmission device to roll the rear wheel and move the bike body.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a leisure fitness bike, and more particularly to the improved leisure fitness bike with the features of a simple structure and an easy and convenient use. Unlike riding a conventional fitness bike, riders can enjoy the recreation, fan and diversity of the bike with both transportation and exercise effects.

2. Description of the Related Art

Among various different types of fitness bikes, the bicycles used for outdoors are the representative ones, and the way of installing and operating the bicycle mainly installs a chain wheel and left and right cranes to a bottom bracket, wherein a pedal is installed separately at the left and right cranes and the two pedals are installed with an included angle equal to 180 degrees, so that a rider's legs can pedal both pedals alternately by a circular motion. When the chain wheel rotates, a free wheel drives the rear wheel to rotate and move forward. In other words, the conventional way of pedaling and driving a bicycle is achieved by the circular pedaling of both legs of the rider, which is a pedal driving method. As to the bicycle rider, such pedal driving method provides a very high efficiency and is commonly used. In addition, the bicycle is generally used for short-distance transportation or for exercises, so that the operation requirement is not intended to give fun to the riders. However, a leisure fitness bike with the purposes of recreation and exercise, the way of driving and operation of the bicycle is relatively rigid without much diversity or refreshing, or even is too boring for the riders to continue their ride.

SUMMARY OF THE INVENTION

In view of the aforementioned drawbacks of the prior art, the inventor of the present invention based on years of experience in the related industry to conduct extensive researches and experiments, and finally invented the present invention to overcome the drawbacks of the prior art.

Therefore, it is a primary objective of the present invention to overcome the aforementioned drawbacks by providing a leisure fitness bike with a riding different from the riding of a general bicycle to provide fun, recreation and diversity to the transportation, leisure and exercise purposes.

To achieve the aforementioned objective, the present invention comprises a front frame of a frame movably hinged to a rear frame, and a handlebar and a front wheel, and a pedal body installed at upper and lower ends of the front frame respectively, and the rear frame includes a saddle, a rear wheel and a rear wheel transmission device, and a driving device is installed between the front and rear frames and coupled to a rear wheel transmission device, so that after a rider sits on the saddle and puts both hands and legs onto the handlebar and the pedal body respectively, the front frame is moved forward and backward by the stretching and contracting forces, and the driving device drives the rear wheel transmission device to roll the rear wheel and move the bike body. With the unique operation, the fitness bike of the present invention provides fun, recreation, and diversity to the exercise, leisure and transportation of the bike.

The objectives, technical characteristics, measures, effects and advantages of the present invention will become apparent with the detailed description of preferred embodiment accompanied with the illustration of related drawings as follows.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS. 3 and 2for an improved leisure fitness bike of the present invention, the leisure fitness bike comprises a frame1including a front frame11swung to the front and the rear and pivotally coupled to a rear frame12, and a handlebar2and a front wheel3, and a pedal body4installed at upper and lower ends of the front frame1respectively, and the rear frame12comprises a saddle5, a rear wheel6and a rear wheel transmission device7, and a driving device8is installed between the front and rear frames11,12and coupled to the rear wheel transmission device7.

The front frame11includes a hinge ear111coupled to a front hinge portion121of the rear frame12and movably hinged by a pivot122, such that upper and lower ends of the front frame11can be moved to the front and the rear by using the pivot122as a hinge.

The rear wheel transmission device7includes a free wheel71coaxially installed with the rear wheel6, or a transmission set comprising transmission elements such as at least one free wheel71, a first transmission wheel72, a second transmission wheel73and a first transmission belt74.

The driving device8includes a driving element81and a position restoring element82, wherein an end of the driving element81is coupled to the front frame11and the other end surrounded around the free wheel71or the first driving wheel72of the rear wheel transmission device7and then coupled to an end of the position restoring element82and the other end of the position restoring element82is coupled to the frame1or the rear frame12, and the lower end of the front frame11together with the front wheel3, and the pedal body4always have a back-swinging resilience force.

Wherein, the driving element81of the driving device8comprises a driving rod811coupled with a driving belt812, and an end of the driving rod811is movably hinged with the extension arm112of the front frame11, and the other end is coupled to the driving belt812, and the other end of the driving belt812is surrounded around the free wheel71or the first driving wheel72of the rear wheel transmission device7and then coupled to the position restoring element82.

Wherein, the driving element81of the driving device8can be the driving belt812with an end coupled to the front frame11and the other end surrounded around the free wheel71or the first driving wheel72of the rear wheel transmission device7and then coupled to the position restoring element82.

Wherein, the driving element81includes front and rear block members813,814installed at predetermined positions and corresponding to the frame extension arm123for limiting the distance of front and rear displacement of the driving element81and the amplitude of front and rear swing of the front frame11.

Wherein, the rear wheel transmission device7can use the free wheel71coaxially installed with the rear wheel6and provided for a driving operation by the driving element81(812) of the driving device8, so as to drive the rear wheel6to rotate directly and increase the rotation speed of the rear wheel6, and the rear wheel transmission device7further comprises transmission elements such as at least one first driving wheel72, a second driving wheel73and a first driving belt74to transmit motive power force to the free wheel71. Wherein, the first driving wheel72has a relatively smaller diameter for driving the driving element81(812) of the driving device8, and the second driving wheel73and the first driving wheel72are installed coaxially with each other and have a relatively greater diameter for coupling the free wheel71with a smaller diameter through the first driving belt74, so that the rear wheel6driven by the driving device8can achieve the expected effect of the increased speed.

InFIG. 3, the front frame11can be moved to the front and the rear through the pivot122and coupled to the rear frame12, and both ends of the driving element81of the driving device8are coupled to the front frame11and the rear wheel transmission device7respectively. With the position restoring element82, the lower end of the front frame11together with the front wheel3and the pedal body4always have the back-swinging resilience force, so that after the rider sits on the saddle5of the rear frame12, and puts both hands and legs on the handlebar2and the pedal body4at the upper and lower ends of the front frame11respectively, the stretching and contracting forces produced from the coordination and movements of the rider's hands and legs push the upper and lower ends of the front frame11to swing to the front and the rear alternately. When the driving element81is pulled or moved forward, the rear wheel transmission device7is driven, such that the rear wheel6is driven to and drive and move the car body, and then swing back to pull back the driving element81by the position restoring element82. Now, the rear wheel transmission device7can be idled without driving the rear wheel6, so as to move the front wheel3smoothly and back-swing and return to the original position and get ready for the next front swinging cycle. Of course, the lower end of the front frame11always has the back-swinging resilience force, so that it saves power and achieve a smooth movement of pushing the handlebar2at the upper end of the front frame11by the rider's hands of the rider.

Since the front and rear block members813,814installed at the driving element81of the driving device8can be block the frame extension arm123at a predetermined position in the displacement of the driving element81in order to control the amplitude of the front and back swings of the front frame11, and the rider can apply the stretching and contracting forces of both hands and legs to push the front frame11to move, so as to achieve the effects of riding the bike and the expected safety and smoothness of riding.

In other words, after the rider sits on the saddle5and applies stretching and contracting force to the upper and lower ends of the front frame11by both hands and legs to ride the bike. The bike not only features uniqueness, fun, recreation and diversity, but also expand the scope of physical exercises while providing the transportation, leisure and exercise effects.

In other words, the leisure fitness bike of the present invention has the advantages of simple structure, and easy and convenient operation and use.

The leisure fitness bike allows users to expand the scope of physical exercises while providing the transportation, leisure and exercise effects.

In summation of the description above, the present invention achieves the expected objectives and effects and complies with the patent application requirements, and thus is duly filed for patent application. While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.