| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary type valve device capable of attaining high rotation of a rotary valve.SOLUTION: A rotary type valve device 50 includes a first supply flow passage 62 communicating with the vicinity of an axial center of a valve hole 52, and a second supply flow passage 64 communicating with the valve hole 52 on both sides in an axial direction with respect to the first supply flow passage 62, and supplying lower-pressure hydraulic oil than hydraulic oil supplied from the first supply flow passage 62 to the valve hole 52. Also, the rotary type valve device 50 has a seal member 55 for low pressure interposed between the inner peripheral surface on both ends in the axial direction of the valve hole 52 and the outer peripheral surface of a rotary valve 53.SELECTED DRAWING: Figure 3 |
