Bicycle with swing arm device

Abstract

The invention relates to a bicycle with a swing arm device. The bicycle comprises the swing arm device and a bicycle frame. The swing arm device is mounted on the bicycle frame and comprises power transmission devices symmetrically arranged on the two sides of a bicycle body. Each power transmission device comprises a swing arm lever, a pulley groove, a pulley, a connecting rod and a crankset. Oneends of the swing arm levers are connected with pedals, and the other ends of the swing arm levers are connected with a flywheel shaft. The pulley grooves are formed in the swing arm levers. The pulleys make movement in the pulley grooves. One ends of the connecting rods are connected with the pulleys, and the other ends of the connecting rods are connected with a crank throw. The crank throw andthe cranksets are mounted on a connecting shaft. The cranksets and a flywheel transmit power through chains. The structure is simple; by stepping the pedals up and down, the pulleys make linear movement in the pulley grooves, the connecting rods drive the crank throw to drive the cranksets to make circular movement, and thus the power is transmitted through the chains to enable the bicycle to advance; and the structure is simple and reasonable, an original crank throw type bicycle structure is changed, thus much labor is saved during riding, and the force transmission efficiency is improved.

Description

technical field [0001] The invention relates to a bicycle, especially a bicycle with a swing arm device. Background technique [0002] At present, the global climate is warming, and more and more people choose green travel, and bicycles have become the preferred means of transportation for people to travel green. The development of bicycles has a long history and has developed rapidly. Since the birth of the first bicycle, bicycles have always used double pedals to rotate the sprocket with a pair of reverse bell cranks. It is transformed into rotational torque, which is transmitted to the flywheel through the chain, and in the way of driving the rear wheel of the bicycle forward. In this way, the force transmission efficiency depends on the torque generated by the crank, the magnitude of the pedaling force, the direction of force and the direction of the crank. The angle of force, people will produce a lot of force loss when riding. [0003] In addition, with this kind of ...

AI Technical Summary

Problems solved by technology

The development of bicycles has a long history and has developed rapidly. Since the birth of the first bicycle, bicycles have always used double pedals to rotate the sprocket with a pair of reverse bell cranks. It is transformed into rotational torque, which is transmitted to the flywheel through the chain, and in the way of driving the rear wheel of the bicycle forward. In this way, the force transmission efficiency depends on the torque generated by the crank, the magnitude of the pedaling force, the direction of force and the direction of the crank. Angle of force, people will produce a lot of force loss when riding

[0003] In addition, with this kind of driving device, the rider's legs and feet must do circular motions. During the riding process, the pedals cannot always maintain the state of transmitting force. The driving effect will cause a lot of power loss, especially when riding uphill, the rider will be more strenuous when riding, and this defect of the existing crank type bicycle is more prominent

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