초록 ▼

A hydraulic braking apparatus for braking a vehicle wheel, wherein a pressure control valve is disposed between a master cylinder and a wheel brake cylinder, and between a reservoir and a hydraulic pressure source which is independent of the master cylinder and whose pressure is applied as a braking

A hydraulic braking apparatus for braking a vehicle wheel, wherein a pressure control valve is disposed between a master cylinder and a wheel brake cylinder, and between a reservoir and a hydraulic pressure source which is independent of the master cylinder and whose pressure is applied as a braking pressure to the wheel brake cylinder for braking the wheel. The pressure control valve controls the braking pressure as a function of the master cylinder pressure which is generated by the master cylinder, depending upon the operating force acting on a brake operating member. An electrically controlled pressure regulating device is provided for applying an electrically controlled force to the pressure control valve, to thereby regulate the braking pressure to be applied to the wheel brake cylinder.

대표청구항 ▼

A hydraulic braking apparatus for braking a wheel of a vehicle, comprising: a brake operating member; a master cylinder having a pressurizing chamber for generating a hydraulic master cylinder pressure depending upon an operating force acting on said brake operating member; a hydraulically operated

A hydraulic braking apparatus for braking a wheel of a vehicle, comprising: a brake operating member; a master cylinder having a pressurizing chamber for generating a hydraulic master cylinder pressure depending upon an operating force acting on said brake operating member; a hydraulically operated brake having a wheel brake cylinder for braking the wheel; a reservoir; a hydraulic pressure source, independent of said master cylinder, for generating a hydraulic pressure; a pressure control valve connected to said master cylinder, said wheel brake cylinder, said hydraulic pressure source and said reservoir, for controlling said hydraulic pressure of said hydraulic pressure source as a function of said master cylinder pressure applied as a pilot pressure to said pressure control valve, so that the controlled hydraulic pressure is applied as a braking pressure to said wheel brake cylinder; an electrically controlled pressure regulating device for applying an electrically controlled force to said pressure control valve, to thereby regulate said braking pressure to be applied to said wheel brake cylinder; and a pressure restricting device disposed between said master cylinder and said pressure control valve, for reducing a rate of increase of said pilot pressure applied to said pressure control valve after said master cylinder pressure exceeds a preset level.