Reaction force type disc brake

摘要

A reaction force type disk brake in which a bridge of a brake caliper is provided with a window opening through which friction pads can be inserted and withdrawn and the brake caliper is divided at the bridge into two blocks which are integrally interconnected by pairs of first and second connecting bolts provided on both sides of the window opening. The connecting bolts are arranged along an outer peripheral surface of said brake disk, and a relationship L1<L2 is established wherein L1 represents a distance between both the first connecting bolts and L2 represents a distance between both the second connecting bolts and also a relationship H1<H2 is established wherein H1 represents a distance from a line intersecting a radius line of the brake disk at right angles at a center of a total urging force of the piston to the first connecting bolt and H2 represents a distance from such line to the second connecting bolt. Rigidity of the brake caliper formed of two blocks can effectively be enhanced.