A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

A bicycle having a frame with a saddle, and rear and front wheels. A large gear is rotated integrally with the rear wheel and is concentric with an axle thereof and includes a diameter smaller than the rear wheel. A small gear circumscribes the large gear above the rear wheel axle, a small gear supporting bracket swings about the rear wheel axle and rotatably supports the small gear. A load receiving surface, a load transmission unit movably supported to the frame and movable longitudinally on the load receiving surface are provided. A first sprocket is concentric with the small gear, a second sprocket is rotatably provided rear of the first sprocket and lower than the rotation center thereof, a chain is wound between the first and second sprockets, and a first rachet which mounted on the small gear restricts rearward rotation of the rear wheel via the large gear.

In an aspect there is provided a swing scooter, comprising a frame, a steering member, a front wheel, at least two support legs, and at least two platforms. A rear wheel support is pivotally attached each support leg. A rear wheel is rotatably attached to each rear wheel support. Each platform is movably attached to an associated support leg, and positioned for supporting a foot of a user. Each platform has a longitudinal platform axis and is movable between a first position in which the platform is angled down laterally towards a first lateral side of the swing scooter, and a second position in which the platform is angled down laterally towards a second lateral side of the swing scooter. The platform is movable to the first and second positions by movement of the foot of the user.

In an aspect there is provided a swing scooter, comprising a frame, a steering member, a front wheel, at least two support legs, and at least two platforms. A rear wheel support is pivotally attached each support leg. A rear wheel is rotatably attached to each rear wheel support. Each platform is movably attached to an associated support leg, and positioned for supporting a foot of a user. Each platform has a longitudinal platform axis and is movable between a first position in which the platform is angled down laterally towards a first lateral side of the swing scooter, and a second position in which the platform is angled down laterally towards a second lateral side of the swing scooter. The platform is movable to the first and second positions by movement of the foot of the user.

A bicycle having a frame with a saddle, and rear and front wheels. A large gear is rotated integrally with the rear wheel and is concentric with an axle thereof and includes a diameter smaller than the rear wheel. A small gear circumscribes the large gear above the rear wheel axle, a small gear supporting bracket swings about the rear wheel axle and rotatably supports the small gear. A load receiving surface, a load transmission unit movably supported to the frame and movable longitudinally on the load receiving surface are provided. A first sprocket is concentric with the small gear, a second sprocket is rotatably provided rear of the first sprocket and lower than the rotation center thereof, a chain is wound between the first and second sprockets, and a first rachet which mounted on the small gear restricts rearward rotation of the rear wheel via the large gear.

A vehicle propellable by a human comprising a front assembly having a front wheel and a pair of hand pedals connect thereto; a rear assembly having a first rear wheel and a second rear wheel rotatably connected thereto; a chest rest located between the front assembly and the rear assembly, the chest rest configured to support the chest of a rider lying forward on the vehicle; and a first foot support structure operatively coupled to rotate the first rear wheel, and a second foot support operatively coupled to rotate the second rear wheel wherein the first rear wheel and second rear wheel are independently rotated by opposite feet of a rider when said feet are within said first and second foot support, respectively.

A toy vehicle for children, comprising a vehicle frame (1), a steering rod (4) extending in the vertical direction, and a front wheel component (2) provided at the bottom of the steering rod (4). The vehicle frame (1) comprises a main vehicle frame (1) provided with a seat mechanism (7), a left frame (12) provided at the rear with a left rear wheel component (31), and a right frame (13) provided at the rear with a right rear wheel component (32). The left frame (12) and the right frame (13) respectively are rotatably connected to the rear part of the main vehicle frame (1). The left rear wheel component (31) and the right rear wheel component (32) are omnidirectional wheels. Also provided on the vehicle frame (1) are a driving mechanism used for driving the left frame (12) and the right frame (13) to rotate respectively relative to the main vehicle frame (1) so as to allow the left rear wheel component (31) and the right rear wheel component (32) to approach each other or to move away from each other, and an operating mechanism used for driving the movement of the driving mechanism.

A generator system that includes a platform configured to support a load (FIG. 1). The platform is located in an area at which loads are present for a certain period of time on a recurrent basis. That is, loads that undergo recurrent loading and unloading, wherein loads on the platform will cause compression of the platform thereby generating motive power. The generator system includes a generator operatively connected to the belt and configured to convert at least a portion of the motive power into electric energy. The generator system further includes an automatic transmission box configured to translate the at least a portion of the motive power to the generator.

Extreme labor-saving bicycle, comprising a front wheel assembly, a rear wheel assembly, a handle, a pedal, a frame, a connecting rod, a swinging rod, a seat and a transmission mechanism for transferring force of the swinging rod to the rear wheel assembly, wherein, the front wheel assembly and the rear wheel assembly are mounted at front end and rear end of the frame, the pedal is rotatably mounted at lower end of the middle of the frame, the swinging rod and the pedal are hinged to two ends of the connecting rod, the seat is fixed at a hinging end of the connecting rod and the swinging rod, and one end of the swinging rod away from the seat, is hinged to=front end of the frame and=connected with the rear wheel assembly through the transmission mechanism.

Extreme labor-saving bicycle, comprising a front wheel assembly, a rear wheel assembly, a handle, a pedal, a frame, a connecting rod, a swinging rod, a seat and a transmission mechanism for transferring force of the swinging rod to the rear wheel assembly, wherein, the front wheel assembly and the rear wheel assembly are mounted at front end and rear end of the frame, the pedal is rotatably mounted at lower end of the middle of the frame, the swinging rod and the pedal are hinged to two ends of the connecting rod, the seat is fixed at a hinging end of the connecting rod and the swinging rod, and one end of the swinging rod away from the seat, is hinged to=front end of the frame and=connected with the rear wheel assembly through the transmission mechanism.