Patent ID: 7083240

Claim:
A vehicle braking system comprising: a hydraulic booster which has a control piston for achieving a balance between reaction force generated by hydraulic pressure of a boosted hydraulic pressure chamber capable of generating boosted hydraulic pressure to be applied to wheel brakes and brake operating input from a brake operating member, and which applies output hydraulic pressure of a hydraulic power source to the boosted hydraulic pressure chamber after regulating the output hydraulic pressure as the control piston moves axially; and a brake stroke simulator installed between the brake operating member and the control piston in order for a driver to feel operating strokes of the brake operating member, wherein the brake stroke simulator comprises an input member axially slidably housed in the control piston of a cylindrical shape and linked to the brake operating member, and an elastic body interposed between the input member and the control piston and housed in the control piston, and wherein the elastic body is formed into a tubular shape so as to come into resilient contact with an inner circumference of the control piston by expanding the diameter of the elastic body under the action of axial compressive force generated by forward movement of the input member.