The utility model discloses an automatic winding device of a bicycle
saddle protective cover, which comprises a protective cover and an automatic winding device, the automatic winding device comprises a winding drum, a winding drum shaft, a
clockwork spring, two dampers, a Y-shaped support, a support shaft, two side plates and a bottom plate; the winding drum is rotatably fixed between the two side plates, and the protective cover is wound on the winding drum, is stored below a bicycle
saddle at ordinary times, and is prevented from being in contact with rainwater and dust; when a user uses the protective cover, the protective cover can be conveniently pulled out from a winding drum below a seat to cover a
saddle of the bicycle; in the riding process, when the body of a user leaves the
cushion for a short time, the protective cover continues to cover the upper portion of the
cushion under the action of the
damper; after the user leaves the bicycle for a certain time, the protective cover can be automatically recycled to the position below the
cushion, use is convenient, fast and
environmentally friendly, the whole device is purely mechanical, dependence on
electronic equipment is reduced, recycling can be achieved, and reliability and use continuity are guaranteed.