bicycle derailleur

Abstract

The invention discloses a bicycle derailleur, which comprises: a main body; a chain guide part, which is swingably arranged on the main body; a resistance mechanism, which includes a resistance assembly and an adjustment part, and the adjustment part is pivotally arranged on the main body And it can be rotated between a first position and a second position. The two ends of the resistance component are respectively arranged on the chain guide part and the adjustment part, so that the resistance component applies a resistance torque to the chain guide part and makes the The adjustment member has a tendency to rotate toward the first position, and the resistance torque gradually increases when the adjustment member moves from the first position to the second position; a first stopper is arranged on the body and can move on a A release position and a stop position; wherein, when the first stop member is at the stop position, the first stop member interferes with the rotation path of the adjusting member between the first position and the second position ; when the first stopper is at the release position, the first stopper does not interfere with the rotation path of the adjusting member between the first position and the second position.

Description

technical field [0001] The present invention relates to a bicycle derailleur. Background technique [0002] The transmission system is one of the core mechanisms of a bicycle, among which, the derailleur used for shifting is an important structure. The derailleur pulls the chain from one sprocket to another size sprocket through the relative swing of the chain guide, thereby achieving the purpose of shifting. At the same time, from the side of the hub where the derailleur is installed, the chain guide will normally be subjected to a clockwise force to stretch the chain, so that the chain can be normally maintained at an appropriate tension to avoid running unsmoothly or the chain falling off. situation happens. [0003] However, in such a conventional derailleur, the resistance mechanism for providing a clockwise force to the chain guide usually maintains a constant resistance torque and cannot be adjusted. Therefore, once riding on a rough road with large gradient change...

AI Technical Summary

Problems solved by technology

[0003] However, in such existing derailleurs, the resistance mechanism used to provide clockwise force to guide the chain member usually maintains a constant value and cannot be adjusted.

Therefore, once riding on a rough road section with large gradient changes, the force generated by the shock of the chain will be greater than the resistance torque provided by the resistance mechanism, which will cause the chain guide to swing in the opposite direction and cause the chain to relax. , Insufficient tension, chain drop occurs, seriously endangering the safety of riders, there are shortcomings that need to be improved urgently

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