Hydraulic braking device for vehicles, supplies control-valve output pressure to hydraulic pressure supply path, through non-return valve, when control-valve output pressure exceeds supply-path pressure, in automatic braking control

摘要

A hydraulic pressure supply path (20) connected to a main path connecting a pressure control valve (3) and a wheel cylinder, reduces oil pressure output from source (5) and supplies it to the main path, through proportional valve (21). During automatic braking control, when control-valve output pressure exceeds supply-path pressure, control-valve output pressure is fed to supply path through non-return valve (23).