| 摘要 |
PROBLEM TO BE SOLVED: To downsize a belt type non-stage transmission in a vehicle width direction as well as being excellent in precautions against debris entry into a seal member.SOLUTION: A belt type non-stage transmission comprises: a drive pulley 35 mounted on a crankshaft 33; and a driven pulley 39 fitted to a cylindrical hollow shaft 38 arranged coaxially with a drive shaft 36. A crankcase 31L is provided with a boss part 52 and the hollow shaft 38 is provided with a flange part 59, to which the driven pulley 39 is fixed, formed at its end part facing the end face 52a of the boss part 52. On the end face 52a of the boss part 52, an annular projection 55 is formed along an opening edge of a hole 53 to protrude in a direction of the hollow shaft 38. On the end face 38a of the hollow shaft 38, an annular projection 60 is also formed along an outer peripheral edge of the flange part 59 to protrude in a direction of the boss part 52. |
