Bicycle crank convenient to replace

Abstract

,The invention discloses a bicycle crank convenient to replace. The bicycle crank comprises a first crank body and a second crank body, a connecting block is fixedly arranged on one side of the upper end of the first crank body, a connecting rod is fixedly arranged in the middle of the side, away from the first crank body, of the connecting block, a gear movably sleeves the middle of the surface of the connecting rod a fixing frame is fixedly arranged on the side, close to the first crank, of the gear, an inserting block is fixedly arranged at the end, away from the connecting block, of the connecting rod, an inserting groove is fixedly formed in the middle of the surface of the upper end of the second crank, a first clamping mechanism is arranged in the inserting block, the first clamping mechanism comprises first clamping blocks, a first clamping groove, a transmission rod, a telescopic rod, an extrusion block and a moving block, and the plurality of first clamping blocks are uniformly and fixedly arranged on the periphery of the outer side surface of the insertion block. The bicycle crank is good in use effect, the first crank and the second crank can be conveniently disassembled and assembled, and meanwhile the first crank and the gear can be conveniently disassembled and assembled.

Description

technical field [0001] The invention relates to the technical field of bicycles, in particular to an easy-to-replace bicycle crank. Background technique [0002] In the bicycle, according to the large structural frame of the body, it can be divided into several categories: frame, tire, pedal parts, front fork assembly, chain, flywheel, crank and so on. [0003] Among the 25 accessories such as the bicycle frame, tires, pedals, brakes, and chains, the basic components are indispensable. Among them, the frame is the skeleton of the bicycle, which bears the greatest weight of people and goods. According to the working characteristics of each accessory, it can be roughly divided into guiding system, driving system and braking system. [0004] As one of the indispensable parts in the bicycle, the crank is very important, but the cranks currently used are relatively inconvenient to install, and often need to use multiple screws to fix the crank and the gears of the bicycle, whic...

AI Technical Summary

Problems solved by technology

[0004] As one of the indispensable components in the bicycle, the crank is very important, but the cranks currently used are relatively inconvenient to install, and often need to use multiple screws to fix the crank and the gears of the bicycle, which is relatively inconvenient. The fixed installation between the crank itself also needs to be fixed by screws, it is very inconvenient to disassemble, install and replace, and the use effect is poor

Images