| 摘要 |
PURPOSE:To improve the vibration-proof performance by bringing the upper resilient member near to the inertia spindle of propulsion unit. CONSTITUTION:The center of gravity of propulsion unit 10 is in the vicinity of a crank case 20 on an inertia spindle (A) of a propulsion unit 10. The plane formed by each resilient bodies 76, 86 is containing the inertia spindle (A). The center of resiliency and at least one resilient spindle formed by each resilient body 76, 80 are in the vicinity or on the plane connecting between each resilient body 76, 80. Consequently, the center of gravity of propulsion unit 10 and the inertia spindle (A) will also be in the vicinity of the center of resiliency and the resilient spindle thus to improve the vibration-proof performance. The upper resilient body 76 is fixed on the front face of the cylinder 18. Consequently, the engine 16 can be arranged at higher position when compared with the case where the resilient body is fixed on the upper face of engine 16. Consequently, the position of engine cover 56 will be higher and advantageous in the view point of water-proof performance of engine. |
