| 摘要 |
PURPOSE:To enable to compact an entire outboard motor by providing an upper part supporting means with a vibration isolation means that is compression deformed in the driving force direction and shear deformed in the cross direction so as to obtain a vibration isolation mechanism ideal for both driving force and cross directions. CONSTITUTION:A vibration isolation means 21 that is compression deformed to the longitudinal direction of a propeller unit 10 and shear deformed to the cross direction is provided at the upper part supporting means of a swivel shaft 15 for elastically supporting the propeller unit 10. Accordingly, a vibration isolation supporting structure of high rigidity against the longitudinal driving force of the propeller unit 10 and low rigidity against the turning force by the crosswise vibration is obtained so that a vibration isolation mechanism ideal in both longitudinal and cross directions is obtained. In addition, as a vibration isolation means 21 is elastically supported within the interior of a case 7 by an arm means 16 extended from the outside of the case 7 of the propeller unit 10 to the interior, the arm means 16 is not protruded to the side so that a compact outboard motor can be constructed. |
