| 摘要 |
PROBLEM TO BE SOLVED: To provide support structure for a crankshaft capable of surely sealing lubricating oil in a crank chamber with simple structure. SOLUTION: In the support structure for the crankshaft provided with a right ball bearing 33 rotatably supporting the crankshaft 11 and a bearing energizing means 68 elastically pressing an outer ring 33a of the right ball bearing 33 in a direction separating from an inner surface of a right bearing support hole 66, the bearing energizing member 68 is composed of a spring energizing member 69 and a spring seat member 70 fixed on a crank case 5, a housing hole 67 communicating to a right bearing support hole 66 and provided with the spring energizing member 69 on one end and having the spring seat member 70 fixed on an opening part 67a in another end side and housing the bearing energizing means 68 is provided on a right side wall part 65 of the crank case 5 having the right bearing support hole 66 formed therein, and the opening part 67a is blocked by the spring seat member 70 and is sealed. COPYRIGHT: (C)2008,JPO&INPIT
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