Bicycle brake shoe

摘要

Bicycle brake shoes 14 are provided for a bicycle braking device 12. The brake shoes 14 are pressed into contact with a bicycle wheel rim 20 to apply a braking force thereto. The brake shoes 14 are coupled to the bicycle braking device 12 by brake shoe holders 38. Each brake shoe 14 includes an attachment portion 14a coupled to the brake shoe holder 38 and a rim contacting portion 14b for contacting the side braking surface of the rim 20. The brake shoes 14 are formed from a non-sulfur cross-linked polymer such as butadiene rubber (BR) or acrylonitrile-butadiene rubber (NBR) being cross-linked with zinc methacrylic acid. In the preferred embodiment, the rim contacting portion 14b is further formed by cross-linking the butadiene rubber or acrylonitrile-butadiene rubber with a binder such as peroxide. The brake shoe 14 is elongated in the rotation direction of the wheel rim 20 and has a braking surface opposite to the braked surface of the rim 20. <IMAGE>