| 摘要 |
PROBLEM TO BE SOLVED: To provide a control valve capable of reducing leak inside a housing.SOLUTION: A control valve 1 includes: a cylindrical housing 10; a pump communication hole provided in the housing 10, and for communicating with a pump; a first communication hole 30 and a second communication hole provided on an inner peripheral wall 12 of the housing 10; a cylindrical rotor 50 accommodated inside the housing 10 coaxially with the housing 10, and having a spreading characteristic in a diameter expanding direction; a rotor rotation mechanism 60 for rotating the rotor 50 along the inner peripheral wall 12 of the housing 10; a first opening part for switching a communication state of the first communication hole 30 and a central space 13 on the radial direction inner side of the rotor 50; a second opening part for switching a communication state of the second communication hole and the central space 13; and a plurality of groove parts 90 formed across the length in an axial direction of the rotor 50 in a region R which the first opening part and the second opening part do not face even when the rotor 50 rotates, out of the inner peripheral wall 12 of the housing 10. |
