Abstract: 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.

Abstract: 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.

Abstract: An improved pedal driving device of a standing type bicycle includes driving sprockets installed at positions of first and second rotating shafts of first and second cranks respectively, and a chain installed between the two driving sprockets for rotating the two driving sprockets synchronously, such that left and right pedals pivotally and respectively installed between other ends of the first and second cranks and provided for pedaling by a user's legs, and when the first and second cranks drive the first and second rotating shafts to rotate, the two driving sprockets and the chain are operated together to rotate the first and second rotating shafts and the first and second cranks synchronously and drive the left and right pedals to revolve along an elliptical track with a clash-free and smooth movement, so as to achieve a smooth, comfortable and safe operation of the bicycle.

Abstract: An improved pedal driving device of a standing type bicycle includes driving sprockets installed at positions of first and second rotating shafts of first and second cranks respectively, and a chain installed between the two driving sprockets for rotating the two driving sprockets synchronously, such that left and right pedals pivotally and respectively installed between other ends of the first and second cranks and provided for pedaling by a user's legs, and when the first and second cranks drive the first and second rotating shafts to rotate, the two driving sprockets and the chain are operated together to rotate the first and second rotating shafts and the first and second cranks synchronously and drive the left and right pedals to revolve along an elliptical track with a clash-free and smooth movement, so as to achieve a smooth, comfortable and safe operation of the bicycle.

Abstract: An improved skate car structure includes a control member installed at a frame that is provided for fixing a front pipe, an elastic restoring element installed in the control member and coupled to the frame, a positioning ear disposed separately on both sides and provided for a pivoted bolt to pivotally installing left and right support rods; a pivoted bolt installed at the frame for positioning the left and right support rods, a handlebar and a front driving wheel installed at ends of the front pipe respectively, and a rear driving wheel module installed at a rear end of the left and right support rods, swung freely and restored automatically, such that after a user stands on the left and right support rods, the user can twist his body, hip or both legs to apply forces or swing the handlebar sideway to drive the car body to slide forward.

Abstract: An improved scooter includes a frame, a front wheel, a rear wheel, a stem, a handle, left and right pedal devices, and left and right first driving devices and second driving device. The left and right first driving devices are driven by the left and right pedal devices respectively for solely or jointly driving the second driving devices, and the driven second driving devices can drive the rear wheel to rotate and roll forward, such that the front and rear wheels can jointly drive the scooter to move forward. Users can pedal the pedal device(s) by one leg or both legs alternately to operate the scooter. The scooter not only complies with the simple, smooth, power-saving, stable and safe ergonomic design, but also comes with a unique operation and driving mode and achieves the effects of providing a recreational sport with fun as well as a transportation tool.

Abstract: An improved scooter includes a frame, a front wheel, a rear wheel, a stem, a handle, left and right pedal devices, and left and right first driving devices and second driving device. The left and right first driving devices are driven by the left and right pedal devices respectively for solely or jointly driving the second driving devices, and the driven second driving devices can drive the rear wheel to rotate and roll forward, such that the front and rear wheels can jointly drive the scooter to move forward. Users can pedal the pedal device(s) by one leg or both legs alternately to operate the scooter. The scooter not only complies with the simple, smooth, power-saving, stable and safe ergonomic design, but also comes with a unique operation and driving mode and achieves the effects of providing a recreational sport with fun as well as a transportation tool.

Abstract: A scooter driving structure includes a step member pivotally coupled to a scooter platform and swingable up and down, a first driving module installed at a position corresponding to the step member and comprising a driving rod, a guide wheel, a first driving wheel, a first driving belt and a position restoring element, and at least one second driving module installed between a pivotal axle of the first driving wheel and an axle center of a rear wheel and comprising a second driving wheel, a second driven wheel and a second driving belt. The step member is pedaled to move the driving rod of the first driving module and drive the first driving belt to rotate the first driving wheel, and the coaxial second driving wheel of the second driving module drives the second driven wheel and the rear wheel to rotate through the second driving belt, so as to achieve a dual drive effect of driving a scooter to move.

Abstract: A scooter driving structure includes a step member pivotally coupled to a scooter platform and swingable up and down, a first driving module installed at a position corresponding to the step member and comprising a driving rod, a guide wheel, a first driving wheel, a first driving belt and a position restoring element, and at least one second driving module installed between a pivotal axle of the first driving wheel and an axle center of a rear wheel and comprising a second driving wheel, a second driven wheel and a second driving belt. The step member is pedaled to move the driving rod of the first driving module and drive the first driving belt to rotate the first driving wheel, and the coaxial second driving wheel of the second driving module drives the second driven wheel and the rear wheel to rotate through the second driving belt, so as to achieve a dual drive effect of driving a scooter to move.

Abstract: A skate fitness car includes left and right support rods having a front end pivotally coupled to a vertical pipe and freely swayed sideway, a rear end pivotally coupled to a rear driving wheel module for automatic position restorations, and a link rod pivotally coupled between the left and right support rods. If a user releases the link rod and applies forces by both legs to bring together and separate the left and right support rods, the left and right rear driving wheels can be rolled forward in an S-shaped path. A front compacting wheel below the vertical pipe is provided for driving a car body to move forward. If the user locks the link rod, the user can apply forces to the left and right support rods by both legs or twist the body to roll the left and right rear driving wheels forward in an S-shaped path and drive the front compacting wheel to slide the car body, so as to achieve the multiple operating modes and give more funs to the fitness exercise.

Abstract: 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.

Abstract: A skate car includes a left and right swayable front pipe coupled to front ends of the left and right support rods and an automatic position-restoring swayable driving wheel pivotally coupled to rear ends of left and right support rods separately. A user can either swing a vertical pipe of the front pipe to the left and right sides to swing the front driving wheel installed at the lower end of the vertical pipe, or apply a force to the left and right support rods to swing the swayable and automatic position-restoring left and right rear driving wheels to the left and right sides, or do both of the above, to drive the car body to roll forward along the S-shaped path and slide forward smoothly, so as to achieve a multiple of operating modes and gain more fun for the fitness exercise.

Abstract: 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.

Abstract: A scooter with one free-swaying rear-wheel set respectively located at rear end of the two fixed holding rods. The rear-wheel sets can sway freely to make the two rear wheels move leftward and rightward; hence, when operator's feet exert strength on said two fixed holding rods, the two rear wheels will be driven to move forward like S-shaped pathway. Moreover, through the coordination of the front wheel, stand rod and handle, the operator will be able to practice different car-driving actions of turning the body, hips and hands around, and different strength-exerting ways, such as by twisting one foot or two feet synchronously. Therefore, the operation of a scooter has the effect of being simple, having the feature of both fun and recreation.

Abstract: The present invention relates to an improved rowing exercise device includes one base, two rowing widgets, one driving widget, one footrest widget, one hoisting widget and one cushion. Making use of the driving widget to drive rowing widget, footrest widget and hoisting widget synchronously, operator, who sits on the cushion and stays on the hoisting widget, will be able to operate rowing handle to practice rowing action with hands and his feet will co-operate with the action of sway-forward and sway-backward of the footrest widget to practice stretching-and-bending exerting action at the same time; moreover, hoisting widget can load the operator's body up and down synchronously. By means of harmony-operation, not only the purpose of stretching and exercise hands, feet belly and thorax can be reached, but also improves the effect of reality and fun of rowing sport.

Abstract: A reciprocal upward and downward pedaling bicycle structure includes a main shaft of a free wheel at a chain wheel shaft, a driving body pivotally coupled to a frame of the main shaft, a pedal crank and a support rod on the driving body, and a driving belt linked to the main shaft and the support rod. An end of the driving belt is dragged to the frame by a resilient element. By the action of the resilient element ands the rotation of the main shaft, the crank and pedal are pulled by the driving belt to provide an upward bounce and the chain wheel drives the rear wheel shaft through the main driving belt. When the pedal is stepped downward, the main shaft and the chain wheel are rotated synchronously to drive the rear wheel of the bicycle to move forward.

Abstract: A twist stationary bike of a fitness equipment including a pedal driven vertical shaft provided on the bike frame, a turning bar located on a top of the shaft, a seat pivotally connected to an end of the turning bar for a user to sit on and to step on pedals to revolve the vertical shaft for naturally twisting the waist and swinging the buttock of the user to achieve a fitness purpose.

Abstract: An oscillated fitness bicycle structure includes a first driving apparatus and a second driving apparatus installed on a base, an eccentric portion on the first driving apparatus, a driving rod integrated to a handle support rod and disposed on a saddle support rod, a back-and-forth oscillation rod connected to the handle support rod and saddle support rod, and a resilient element for providing upward bounces anytime. When an exerciser sits on the saddle, the body weight of the exerciser pushes the saddle support rod downward and two driving rods drive a driving wheel of the first driving apparatus and a weight wheel of the second driving apparatus to rotate, such that the handle support rod and saddle support rod can perform leaping back-and-forth, up-and-down and sideway oscillations to provide an exercise similar to a horse riding exercise.

Abstract: The present invention relates to an improved scooter with one free-swaying rear-wheel set respectively located at rear end of the two fixed holding rods. The feature is making use of rear-wheel sets that can sway freely to make said two rear wheels move leftward and rightward; hence, when operator's feet exert strength on said two fixed holding rods, the said two rear wheels will be driven to move forward like S-shaped pathway. Moreover, by means of the coordination of the front wheel, stand rod and handle, the operator will be able to practice different car-driving actions of turning the body, hips and hands around, and different strength-exerting ways, e.g. twisting foot by foot or two feet synchronously. Therefore, the operation of a scooter has the effect of being simple, having the feature of both fun and recreation.

Abstract: A reciprocal upward and downward pedaling bicycle structure includes a main shaft of a free wheel at a chain wheel shaft, a driving body pivotally coupled to a frame of the main shaft, a pedal crank and a support rod on the driving body, and a driving belt linked to the main shaft and the support rod. An end of the driving belt is dragged to the frame by a resilient element. By the action of the resilient element ands the rotation of the main shaft, the crank and pedal are pulled by the driving belt to provide an upward bounce and the chain wheel drives the rear wheel shaft through the main driving belt. When the pedal is stepped downward, the main shaft and the chain wheel are rotated synchronously to drive the rear wheel of the bicycle to move forward.