Patent ID: 6652040
Filing Date: 2003-11-25
Classification: B60T

Abstract:
A brake fluid pressure generating device, comprising:an input shaft to be actuated by brake operating means, a first valve element connected to the input shaft to be operated by a force applied to the input shaft, first force means connected to the first valve element to provide a counter force relative to the force applied to the first valve element so that the first valve element is balanced between the counter force and the force of the input shaft, a second valve element situated adjacent to the first valve element to be able to move relative to the first valve element, a power cylinder unit actuated by the first valve element and having a power piston moved according to an operation of the first valve element, second force means situated between the power piston and the second valve element to move the second valve element with a force in association with a movement of the first valve element, said force of the second force means being converted by a converting factor with respect to a stroke of the power piston, third force means connected to the second valve element to provide a counter force relative to a force applied to the second valve element by the second force means, said counter force of the third force means being converted by a converting factor with respect to a stroke of the second valve element so that the second valve element is balanced between the force of the second force means and the counter force of the third force means, and a master cylinder connected to the power piston to generate a master cylinder pressure to thereby output a regulated control valve output pressure.