| 摘要 |
PROBLEM TO BE SOLVED: To provide an inscribed gear pump achieving high efficiency and low noise by becoming high-tooth.SOLUTION: A tooth form of an outer gear 2 is formed asymmetrically between a meshing side and a non-meshing side. A curve forming the tooth form of the outer gear 2 is, on the meshing side, a relatively gentle curve 11, in which the nearer it goes to a tooth root 4b, the larger the curvature gradually becomes, and on the non-meshing side, the curve is a relatively steep curve 12, in which the nearer it goes to a tooth root 4c, the smaller the curvature gradually becomes. The curve 11 on the meshing side and the curve 12 on the non-meshing side are continuously connected at a tooth tip 4a. |
