| 摘要 |
A foldable adjustable cleaning shield for use while maintaining the drive mechanisms of a bicycle, designed to fit between the rear wheel and its sprockets in a plane parallel to said wheel protecting the wheel and tire while exposing the drive chain, sprockets, chain wheels, and deraileur mechanisms for cleaning and lubrication. A fold at floor level helps to hold the shield in place and also provides a surface to catch dirt and dripping liquids.
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