Bicycle derailleur installation structure and bicycle

Abstract

The invention provides a bicycle derailleur installation structure and a bicycle. The bicycle derailleur installation structure includes a bicycle frame, a hub shaft, a first chain wheel, a hub shell,a flywheel set, a derailleur and a chain; the hub shaft strides between a first rear fork of the bicycle frame and a second rear fork of the bicycle frame, the first chain wheel is rotatably connected with the middle of the bicycle frame, the hub shaft is sleeved with the hub shell, the hub shell is rotatably connected with the hub shaft, the hub shell is sleeved with the flywheel set, and the first chain wheel, the flywheel set and the derailleur are sleeved with the chain. The derailleur is installed on the first rear fork, a tension unit is located between the hub wheel and the first rearfork, when the bicycle frame is in an upright state, the tension unit is located below the plane of an axis passing through the hub shaft, and the tension unit is located between the vertical plane ofthe axis passing through the hub shaft and the vertical plane of the axis passing through the first chain wheel. The bicycle includes the bicycle derailleur installation structure. The bicycle derailleur installation structure and the bicycle have the advantages of being simple in structure, good in safety, and capable of preventing the derailleur from being directly collided.

Description

technical field [0001] The invention relates to the technical field of bicycles, in particular to a bicycle derailleur installation structure and a bicycle including the bicycle derailleur installation structure. Background technique [0002] The rear derailleur of the bicycle is assembled on the rear flat fork of the bicycle frame, and is used to cooperate with the combined speed change gear installed on the bicycle. The rear derailleur moves the chain and meshes with gears of different sizes, thereby realizing the change of the bicycle. Gear shift. When the bicycle is shifted, people pull the shift cable through the shift adjuster, so that the connecting rod structure of the rear derailleur is deformed and moved to drive the chain guide to shift, thereby pushing the chain to mesh with different gears. The rear derailleur of bicycles is mainly installed on mountain bikes or road bikes to meet people's sports needs. [0003] However, the chain guide plate of the existing r...

AI Technical Summary

Problems solved by technology

[0003] However, the chain guide plate of the existing rear derailleur is set towards the rear of the bicycle during use, so that the frame of the bicycle cannot protect the chain guide plate, causing the chain guide plate to be exposed outside the vehicle frame, which is easy to be affected by external forces. impact of objects

And because the chain guide plate is a movable part, it is easy to deform when it is subjected to external impact force, which will cause it to be inserted into the rear wheel after deformation, causing accidental braking, causing the rider to fall and injure, posing a safety hazard

In addition, when the existing bicycle rear derailleur is installed on the bicycle frame, it is all directly installed on the outside of the rear chainstay of the bicycle frame, so that the bicycle rear derailleur is very easy to be bumped or hit, especially when there is a fall. When driving, the rear derailleur of the bicycle will directly collide with the ground, causing the rear derailleur of the bicycle to be easily damaged and easily damaged

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