| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piston pump which forms a compact hydraulic system while absorbing pulsation generated in discharged operating liquid to properly achieve quietness and lower vibration. <P>SOLUTION: When a piston driving member 30 is eccentrically rotated, a piston is reciprocated in the axial direction by the thrust of the piston driving member 30 and the energization of a return spring 39. With the reciprocation of the piston 26, a suction valve 28 and a discharge valve 29 are selectively opened/closed and so brake liquid is sucked from a suction port 24 and discharged from a discharge port 25. Although the pulsation is generated in the brake liquid discharged from the discharge valve 29, pump discharge pressure is introduced through a through-hole 47 into a hydraulic pressure introduction chamber 52 and operated on a pressure receiving plate 50. Then, a pulsation absorbing chamber 51 is shrunk corresponding to the size of the pump discharge pressure to absorb the pump pulsation. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
