Left one-way bearing shaft of bicycle with pedals rotating forwards and backwards for driving

Abstract

The invention relates to a center shaft assembly of a bicycle, in particular to a left one-way bearing shaft of a bicycle with pedals rotating forwards and backwards for driving. The left one-way bearing shaft of the bicycle with the pedals rotating forwards and backwards for driving is characterized in that an internal thread through hole is formed along the axis of the shaft and provided with a left-hand thread, the left one-way bearing shaft is provided with an external thread end, a shaft neck, a regular-polygon convex step and a shaft shoulder in sequence from left to right, and a key groove is formed in the shaft neck. The left one-way bearing shaft of the bicycle with the pedals rotating forwards and backwards for driving is unique and ingenious in design, easy to manufacture, long in service life, convenient to mount, demount and maintain, good in trial effect and beneficial to solving the long-standing problem that a left bevel gear swings, and the reliability of a center shaft assembly of the bicycle with the pedals rotating forwards and backwards for driving is significantly improved.

Description

technical field [0001] The invention relates to a central shaft assembly of a bicycle, and more particularly to a left one-way bearing shaft of a bicycle driven by forward and reverse rotation of pedals. Background technique [0002] Bicycle is mainly made up of parts such as vehicle frame, central shaft assembly, rear wheel, front wheel, chain, chain disc, flywheel, pedal, brake, and the central shaft assembly structure of existing bicycle is relatively simple, mainly consists of central shaft Seat, axle, bearing, chain plate, kidnapper etc. are made up, and general-purpose bicycle is all one-way drive, promptly drives bicycle when left and right feet steps forward. On February 19, 2012, the inventor applied for a bicycle driven by the forward and reverse rotation of the pedals. The bicycle driven by the forward and reverse rotation of the board successfully realizes the bicycle bidirectionally driven by the pedal. However, it has been found in practice that the structure...

AI Technical Summary

Problems solved by technology

However, it has been found in practice that the structure of the bicycle center shaft assembly is unreasonable, the center shaft assembly is often prone to problems, the service life is short, installation and disassembly are inconvenient, and the bevel gear on the left side is easy to swing, which seriously affects the forward and reverse rotation of the pedals. For this reason, the center shaft assembly of the bicycle needs to be improved, and the left one-way bearing shaft of the bicycle driven by the forward and reverse rotation of the pedals needs to be explored.

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