| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil pump capable of sufficiently increasing a net emission amount of oil per unit rotation.SOLUTION: The oil pump 100 comprises: a rotatable inner rotor 10 having a vane housing part 12 (a recess part 12a) in which plural vanes 30 are housed slidably in a radial direction; a rotatable annular outer rotor 20 having plural base parts 21e coupled to outer tip parts 32 of the plural vanes 30 in the radial direction; a capacity chamber 61 provided between the inner rotor 10 and the outer rotor 20 and having a pump function by changing a capacity V1 according to eccentricity of the outer rotor 20 to the inner rotor 10; and a capacity chamber 62 provided on the outer rotor 20, and having a pump function by changing a distance in a circumferential direction (an arrow P direction) between the adjacent base parts 21e according to eccentricity of the inner rotor 10 to the outer rotor 20 to change a capacity V2. |
