| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piston motor capable of putting a cylinder block in a fixed non-rotation condition, allowing rotation of a cam ring arranged on its outer side, and allowing rotation of the cylinder block on an inner side by merely replacing small number of parts of the piston motor. <P>SOLUTION: This piston motor 1 is provided with the cylinder block 7, the cam ring 55, cylinders 8, 10 formed on the cylinder block 7, pistons 9, 11, and a distribution valve 15 distributing and supplying hydraulic fluid to rotate either of the cylinder block 7 and the cam ring 55 for the other of them. An oil supply member 40 having an oil supply port 41 capable of rotating relatively and freely with the distribution valve 15 and communicating with an external oil supply system and an oil supply hole 16a of the distribution valve 15 is provided between the external oil supply system and the distribution valve 15. This oil supply member 40 is fixed in a non-rotation condition, and the distribution valve 15 rotates relatively for it to rotate the cam ring 55 in this piston motor 1. <P>COPYRIGHT: (C)2004,JPO</p> |
