Gear cleaner for bicycles

A gear cleaner comprising:

• a mounting device fastened to the chain stays of a bicycle, said mounting device comprised of an upper clamping plate and a lower clamping plate fastened together around the chain stays, said upper clamping plate comprising a flat mounting portion at one end and a half-round clamping portion at an opposite end mounted around the chain stays at the top, the flat mounting portion of said upper clamping plate having a screw hole, the half-round clamping portion of said upper clamping plate having two barrels aligned on a front end thereof at two opposite sides, said lower clamping plate comprising a flat mounting portion at one end and a half-round clamping portion at an opposite end mounted around the chain stays at the bottom, the flat mounting portion of said lower clamping plate having a screw hole connected to the screw hole on the flat mounting portion of said upper clamping plate by a screw, the half-round clamping portion of said lower clamping plate comprising a transverse pin hole connected between the two barrels of said upper clamping plate by a pivot pin, and a brush mounting groove made in a substantially C-shaped cross section and transversely disposed in parallel with said pivot pin;
• a brush fastened to said mounting device, said brush comprising a circular mounting rod portion transversely linked to a brush head thereof at one end and fitted into the mounting groove on said lower clamping plate, and bristles fastened in the brush head and disposed in contact with the gear wheels of the speed change gear of the bicycle.