| 摘要 |
The element (1) has a base body (3) that is provided in the shape of an isosceles triangle, and three cutting edges (5) are provided in the main body. A centrally arranged hole (7) is provided in a triangular manner with rounded corners. The rounded corners lie symmetrically to center of gravity of the base body, where the cutting element is able to pivot when a fixing plate is rotated by a drive motor of a lawn mower, and the cutting element is forced outward by centrifugal forces to one of three rotary bearings. |
