Patent ID: 8733515

Claim:
A caliper body for a disc brake for a vehicle, the caliper body being for a two system-type disc brake for the vehicle and comprising: three or more cylinder holes arranged in a disc circumference direction in an action portion disposed at a side portion of a disc rotor, at least two of the cylinder holes being formed as cylinder holes for a first brake system and at least one of the cylinder holes being formed as a cylinder hole for a second brake system, the at least one cylinder hole for the second brake system being disposed between the at least two cylinder holes for the first brake system, the at least two cylinder holes for the first brake system being connected by a communication path, pistons inserted into the at least two cylinder holes for the first brake system being actuated by hydraulic fluid supplied through a first fluid passage, a piston inserted into the at least one cylinder hole for the second brake system being actuated by hydraulic fluid supplied through a second fluid passage, a first union hole and a first bleeder hole open in the first fluid passage, and a second union hole and a second bleeder hole open in the second fluid passage, wherein the communication path and the first bleeder hole are formed rectilinearly on an outside, relative to a center of the disc brake in a disc radius direction, of an imaginary line which rectilinearly connects inner edges, relative to the center of the disc brake in the disc radius direction, of the at least two cylinder holes for the first brake system, wherein the at least one cylinder hole for the second brake system is provided on an outside, relative to the center of the disc brake in the disc radius direction, of the communication path, wherein the caliper body is supported to be movable in a direction of a disc shaft on a caliper bracket mounted to a vehicle body through a pair of slide pins, one of said slide pins being provided on a disc rotation output side and the other of said slide pins being provided on a disc inner periphery side in a forward traveling direction of the vehicle, and wherein the slide pin on the disc inner periphery side is either (a) disposed at such a position that an imaginary line which rectilinearly connects inner edges of cylinder portions having the at least two cylinder holes for the first brake system formed therein, relative to the center of the disc brake in the disc radius direction, passes through a section of the slide pin, or (b) disposed on an outside of the imaginary line, relative to the center of the disc brake in the disc radius direction.