| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily assemble a driving side bevel gear to a propeller shaft while reducing manufacturing cost. <P>SOLUTION: An upper casing 6 and a lower casing 7 are provided. A propeller drive mechanism having a drive shaft 21, the driving side bevel gear 43 and driven side bevel gears 44, 45 etc. is provided. A hole 28 extended vertically and opened upwardly is formed in a portion of the lower casing 7 to which the drive shaft 21 is inserted. The hole diameter of the hole 28 is formed larger than the outer diameter of the driving side bevel gear 43. First and second cylindrical bodies 32, 33 are fitted to the upper side of the driving side bevel gear 43 inside the hole 28 so as to be supported by the lower casing 7. A lower end part 21a of the drive shaft 21 is inserted into the first and second cylindrical bodies 32, 33, and is rotatably supported by the first and second cylindrical bodies 32, 33 via bearings 35-37. <P>COPYRIGHT: (C)2009,JPO&INPIT |
