Rapid-folding crank for bicycle

Abstract

The invention relates to the fast replicated branch of the bike including one fixed seat(8)and one mobile arm(1)and the end of the mobile arm connects the fixed seat, characterized in that the mobile arm has (the sliding cover3, the sliding block28, the dial33 and thelevel36) which can be joined to the fixed seat and the spring acting on the equipment fastening(18), if we rotate and press the winding meeting axis of the mobile arm downwards, the equipment fastening buttoned the fixed seat automatically; when we push or pull the equipment fastening ,the equipment fastening detaches from the fixed seat, the mobile arm can be folded rapidly and the footplate is in the direction of inner totally. The collapsing and buttoning the mobile arm needs just one second, the handling of the miry footplate by hand is avoided. There are some other merits: the handy handle, sanitation, good frame, briefness, the thickness of the bike replicated reducing to about third, taking, keeping, transporting and using easy. The invention applies the replicated bike, other force aiding vehicle and the common bike.

Description

technical field [0001] The invention relates to a bicycle crank, in particular to a folding crank of a folding bicycle. Background technique [0002] People have long recognized that folding bicycles can bring many conveniences and benefits to individuals and society, and various folding bicycles have been designed. But because chain transmission and bevel gear transmission are the most practical bicycle transmission methods, the crank and pedal must perform circular motion, which must be multi-directionally stressed, so the pedal or crank should be folded up, and the structure should be reasonable, Simple, easy to operate, fast, hygienic, relatively difficult, has not been well solved for a long time, when the parts such as the vehicle frame, handlebar and saddle of bicycle are folded, the most obstructive thing is exactly the pedal that protrudes outwards. It makes it difficult to further reduce the thickness of the bicycle after it is folded, and takes up a large space f...

AI Technical Summary

Problems solved by technology

However, because the lower end of the crank and the pedal shaft extend inward together, the former will interfere with the frame and easily catch the skirt or trousers. After the pedal is twisted, it may be flat and collide with other objects. Its structure It is also unreasonable, and it is unhygienic to twist the pedals by hand; and the latter requires the use of tools to twist and reset the pedals, which is troublesome and time-consuming

Chinese Utility Model Patent No. ZL96236855 "Folding Crank for Bicycle Pedals", Chinese Invention Patent Application No. CN03109259 and No. CN03148583 "Rotating Crank for Folding Bicycle" all divide the crank into two parts to fold or twist, but because there is a folding The unloading and installation process is troublesome and time-consuming, which is not ideal for folding bicycles that require easy and fast operation

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