| 摘要 |
An oil pump provided with an inner rotor (12) rotating together with a drive shaft (11) and mounted on a driving rotation axis (X), an outer rotor (13) having inner teeth (13A) meshing with outer teeth (12A) of the inner rotor (12) and rotatable about a driven axis (Y) offset from the driving rotation axis (X), and an adjusting ring (14) for rotatably supporting the outer rotor (13). A guide means (G) is formed by first and second arm sections (C1, C2) which are provided on the adjusting ring (14) and by first and second guide surfaces (S1, S2) on which the first and second arm sections (C1, C2) slide. The guide means (G) causes the adjusting ring (14) to rotate about the driven axis (Y) while allowing the driven axis (Y) to revolve about the driving rotation axis (X). |
