Patent ID: 8523293

Claim:
A hydraulic brake apparatus, comprising: a master cylinder pressurizing brake fluid in a pressure chamber by means of a master cylinder piston so as to generate hydraulic pressure in response to an operation stroke of a brake operation member and outputting the hydraulic pressure to a wheel cylinder of a first brake circuit; and a pressure control valve controlling a hydraulic pressure of an auxiliary hydraulic pressure source in response to the hydraulic pressure in the pressure chamber and outputting the controlled hydraulic pressure to a wheel cylinder of a second brake circuit, wherein the master cylinder piston includes a first passage which hydraulically connects the pressure chamber and a reservoir, and a switching valve which closes the first passage when the master cylinder piston moves in a forward direction of pressurizing and which opens the first passage when the master cylinder piston returns in a rearward direction opposite from the forward direction, and wherein a check valve, which allows the brake fluid to travel only from the reservoir to the pressure chamber, and a throttle means, which are hydraulically provided in parallel with each other at the first passage at a position between the switching valve and the reservoir.