| 摘要 |
PURPOSE: A piston pump of a brake device for a vehicle is provided to reduce pulsation which is generated while discharging brake oil by separately connecting a damper to a piston pump. CONSTITUTION: A piston pump of a brake device for a vehicle comprises a sleeve(200), a piston unit(300), an orifice channel(400), and a damper unit(500). One side of the sleeve is opened along the axial direction. The circumference of the sleeve is formed with a connection hole(210). The piston unit allows brake oil to flow into the sleeve. The piston unit forcibly discharges the brake oil which is temporarily stored inside the sleeve to the connection hole. The orifice channel is connected to the connection hole of the sleeve. The length of the orifice channel is predetermined in order to minimize the pulsation of the brake oil discharged from the connection hole. The damper unit is connected to the end of the orifice channel for receiving the brake oil. The damper unit induces to discharge the brake oil while reducing the pulsation of the brake oil. |
