| 摘要 |
Setting of the amount (e) of eccentricity between an inner rotor and an outer rotor of an internal gear pump has a degree of freedom, and this enables a discharge amount of the pump to be increased. A tooth bottom portion (4) of an inner rotor (1) is formed by a hypocycloid curve, an engagement portion (3) between the inner rotor and an outer rotor by an involute curve, and a tooth top portion (1) by an arbitrary curve such as a part of a circular arc or an ellipse, or an epicycloid curve. |
