Pedal simulator for active brake system

摘要

Disclosed herein is a pedal simulator for an active brake system. According to an aspect of the present invention, the a pedal simulator for an active brake system, which is installed at a master cylinder to receive a hydraulic pressure corresponding to a driver's pedal force and to provide pedal feeling to the driver, includes a simulator block having an oil hole connected with the master cylinder at an upper portion thereof and having a bore therein to be in communication with the oil hole, a damping housing coupled to seal a lower end of the bore, a first reaction piston provided in the bore to be slidable by oil introduced from the master cylinder, a second reaction piston slidably provided in the bore and disposed under the first reaction piston to be spaced apart from the first reaction piston in a predetermined distance, a first damping member installed at the first reaction piston to be moved together with the first reaction piston, a second damping member installed at the damping housing and configured to provide a reaction force by pressing of the second reaction piston, and a reaction spring provided between the second reaction piston and the damping housing.

主权项

1. A pedal simulator for an active brake system, which is installed at a master cylinder to receive a hydraulic pressure corresponding to a driver's pedal force and to provide pedal feeling to the driver, comprising:
a simulator block having an oil hole connected with the master cylinder at an upper portion thereof and having a bore therein to be in communication with the oil hole; a damping housing coupled to seal a lower end of the bore; a first reaction piston provided in the bore to be slidable by oil introduced from the master cylinder; a second reaction piston slidably provided in the bore and disposed under the first reaction piston to be spaced apart from the first reaction piston in a predetermined distance; a first damping member installed at the first reaction piston to be moved together with the first reaction piston; a second damping member installed at the damping housing and configured to provide a reaction force by pressing of the second reaction piston; and a reaction spring provided between the second reaction piston and the damping housing, wherein an insertion groove recessed upward to install the first damping member is formed at a lower end of the first reaction piston, and the second damping member has a wing part protruding radially from an outer circumferential surface at an upper portion of the second damping member in a non-deformed state of the second damping member, wherein the wing part is configured to prevent direct contact between the second reaction piston and an upper end of the damping housing when the second damping member is elastically deformed.