| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piston pump capable of varying delivery capacity, while restraining enlargement of a device. <P>SOLUTION: This piston pump 7 has an outer race 15 rotatably arranged around the axis Ax and having a cam surface 51, and an inner race 13 relatively rotatably arranged to the outer race 15. The inner race 13 is provided with a first cylinder 31 for inserting a first piston 33, and a second cylinder 32 formed in a groove shape over the whole periphery around the first cylinder 31 and inserting a cylindrical second piston 34. A second suction passage 46 and a second delivery passage 48 for supplying fluid to the second cylinder 32 and discharging the fluid from the second cylinder 32, are connected to a first suction passage 45 and a first delivery passage 47 for supplying oil to the first cylinder 31 and discharging the fluid from the first cylinder 31. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
