Patent ID: 9302664
Filing Date: 2016-04-05
CPC Classification: B60T

Claim Text:
1. A vehicle brake system comprising: an input device for detecting an amount of operation by an operator; and an electric brake actuator for generating a first brake hydraulic pressure at least on the basis of an electric signal according to the amount of operation, wherein the input device is integrally formed to include a master cylinder and a stroke simulator, the master cylinder generating a second brake hydraulic pressure in response to an input by a piston connected to a brake operation element, and the stroke simulator being integrally provided with the master cylinder as well as communicating with the master cylinder via a hydraulic communication path, wherein the stroke simulator includes a simulator piston and a simulator housing having a simulator accommodation chamber formed therein which accommodates the simulator piston, the simulator piston having a hollow cylindrical piston body with a plurality of openings formed through a side wall thereof, the simulator piston being movable against an urging force of an urging member by being driven by the second brake hydraulic pressure in the simulator accommodation chamber, and the simulator accommodation chamber including an opening portion which allows the simulator piston to be inserted into the simulator accommodation chamber from a side on which the brake operation element is disposed, wherein a receiving member for receiving an input load to the simulator piston is disposed on the opening portion, and the receiving member is held in the simulator housing by a holding ring which is detachable with the simulator housing in a state that the urging member and the simulator piston are accommodated in the simulator accommodation chamber.