Cover device for a driving chain for a bicycle

摘要

A cover device for a driving chain stretched between a front chain gear and a rear chain gear of a bicycle, which is provided with a large number of first and second covers each provided with an outside cover portion for covering a space between the link plates of the chain and side cover portions in continuation of both widthwise ends of the outside cover portion for covering the side surface of each link plate. The utmost end of each of the side cover portions is bent toward the center of the width dimension of the outside cover portion to thereby form an engaging portion engageable with the widthwise edge of each link plate.