Pedal linkage type bicycle driving device

Abstract

A pedal linkage type bicycle driving device comprises a frame, a linkage device, a connecting shaft, a transmission wheel, ratchet wheels, cranks and pedals. The connecting shaft penetrates through the frame and is fixed to the lower portion of the frame, and the two ratchet wheels are fixed to the two sides of the transmission wheel correspondingly; the transmission wheel sleeves the connecting shaft, and each of the two sides of the connecting shaft is connected with the corresponding crank; each crank is connected with the corresponding ratchet wheel on the same side, and the tail ends of the cranks are connected with the pedals; and the linkage device is suspended above the transmission shaft and is connected with the frame, and the tail end of the linkage device is connected with the cranks. The cranks on the left side and the right side of the device do arc swing only in a set range, but under the action of the linkage device, at least one of the cranks at the two sides is in an effective driving state anytime, the cranks apply the maximum torque power to a flywheel by fully utilizing the gravity of a rider within the set range, and the purposes of consuming the minimum physical power and achieving long-distance rapid riding can be achieved.

Description

Technical field [0001] The invention relates to a bicycle driving device, in particular to a pedal linkage type bicycle driving device. Background technique [0002] Bicycle used to be the main tool for most people to travel. With the continuous development of industrialization and the mass production of automobiles, bicycles have gradually faded out of people’s vision. However, in recent years, with the emergence of shared bicycles and municipal public bicycles, bicycles Back to everyone's vision. Traditional bicycles use pedals, cranks and flywheels to be fixed on the same shaft. The pedals and cranks are divided into two left and right arranged in a straight line. During riding, the pedals are stepped on in turn to drive the flywheel to rotate to form a driving force. This fixed connection has a simple and convenient structure. The force is reliable, but there is a theoretical dead angle when the crank is perpendicular to the horizontal plane, and a large amount of useless wo...

AI Technical Summary

Problems solved by technology

Traditional bicycles use pedals, cranks and flywheels to be fixed on the same shaft. The pedals and cranks are divided into left and right two and arranged in a straight line. When riding, the pedals are stepped on in turn to drive the flywheel to rotate to form a driving force. The power is reliable, but there is a theoretical dead angle when the crank is perpendicular to the horizontal plane, and a large amount of useless work consumption within a certain range near the dead angle. It feels easy to ride on flat roads and downhill, but it is difficult to ride uphill

Even on flat roads, long-distance riding is very exhausting, which severely limits the speed and distance of cycling

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