초록

A chain noise preventing device wherein a cushioning ring, having an outside diameter larger than that of a semicircular inscribed circle of chain formed when the chain meshes with a sprocket, is arranged on at least one side surface of the sprocket.

대표청구항 ▼

A chain noise preventing device, comprising: a sprocket; a chain having central portions which mesh with said sprocket, and inside and outside link plates which are disposed on both sides of said sprocket; a holding member including a flange having a diameter which is smaller than the diameter of a

A chain noise preventing device, comprising: a sprocket; a chain having central portions which mesh with said sprocket, and inside and outside link plates which are disposed on both sides of said sprocket; a holding member including a flange having a diameter which is smaller than the diameter of a circle defined by a tooth bottom portion of said sprocket, said holding member further including a retaining wall extending radially from an outer end of said flange over said circle defined by said tooth bottom portion of said sprocket; a cushioning ring having an outside diameter which is larger than an inner semicircle defined by the meshing of said chain with said sprocket, and having an inside diameter which is larger than the outside diameter of said flange of said holding member; said cushioning ring being made from a resilient material; said cushioning ring being made from a spring steel material; said cushioning ring being provided with a rubber ring portion integrally secured to the outer peripheral surface of said cushioning ring; and a projection (349), fitting in a clearance between said inside and outside link plates of said chain, being provided on the surface of said rubber ring portion of said cushioning ring.