| 摘要 |
PROBLEM TO BE SOLVED: To provide a capacity type machine showing lower vibration.SOLUTION: The first arms 44a, 44b are supported in such a way that spherical centers P1a, P1b of outer circumferential spherical surfaces 45a, 45b fixed to the first arms 44a, 44b are restricted on central axial lines of a second arms 54a, 54b by the second arms 54a, 54b formed as inner circumferential cylindrical surfaces having axial lines in parallel with rotating axes of shaft members 50a, 50b as central axes. Even if arm lengths of the first arms 44a, 44b are made short to cause an oscillation piece amplitude angle (maximum oscillation angle) to be made large or diameters (bore diameters) of pistons 42a, 42b to be made short to cause a piston stroke to become large and the oscillation piece amplitude angle (maximum oscillation angle) becomes large, a vibration applying torque for vibrating surrounding part can be made low as compared with that of the prior art capacity type machine, so that it is possible to provide a small-sized capacity type machine showing a high efficiency.SELECTED DRAWING: Figure 1 |
