STROKE SIMULATOR AND BUSH FOR STROKE SIMULATOR

摘要

A stroke simulator and a bush for a stroke simulator are configured so that a bush provided to a stroke simulator can be attached without direction management. The stroke simulator generates brake reaction force by a simulator piston that is displaced within a cylinder by hydraulic pressure generated according to the operation of a brake pedal by a driver. A cylindrical rubber bush is elastically deformed in an axial direction by pressure from the simulator piston to generate brake reaction force, the bush characterized in that a first end section on the simulator piston side and a second end section facing the first end section contain the same number, at least two, of concave sections which are concaved in the axial direction, and the concave section formed in the first end section and the concave section formed in the second end section are formed in different positions in the axial direction.

主权项

1. A stroke simulator including:
a simulator piston which is displaced in a cylinder with a hydraulic pressure generated by a hydraulic-pressure generation means according to a manipulation of a brake manipulator by a driver, and a reaction-force generation means which applies to the simulator piston a reaction force corresponding to displacement of the simulator piston; and generating the reaction force applied to the simulator piston, as a brake reaction force to be applied to the brake manipulator; wherein the reaction-force generation means includes a bush which has a cylindrical shape and is elastically deformed in an axial direction by being pressed by displacement of the simulator piston; an identical number of recesses or protrusions are formed on each of a first end portion and a second end portion of the bush, where the identical number is greater than one, the recesses are recessed and the protrusions protrude in the axial direction, the first end portion is at one end of the bush, and the second end portion is at another end of the bush; and the recesses or protrusions on the first end portion are formed in positions of the bush which are different in the axial direction from positions of the recesses or protrusions on the second end portion.