| 摘要 |
<p>A power unit for a small vehicle in which seal members (72, 109) of an endless shape and bearing members (73, 110) are interposed in this order from a side of a transmission chamber (61) storing a belt type continuously variable transmission (52A, 52B) between a first shaft support part (70) arranged in a crankcase (20) and a crankshaft (26) and between a second shaft support part (108) arranged in a transmission case (54) and a transmission shaft (66). First and second rotation members (74, 92) opposing ends on the transmission chamber (61) side of the first and second shaft support parts (70, 108) respectively are stored in the transmission chamber (61), surrounding walls (81, 111) extending toward at least one of both of the rotation members (74, 92) are arranged so as to surround at least a part of at least one of the crankshaft (26) and the transmission shaft (66) in at least one of of the first and second shaft support parts (70, 108), and distal ends of the surrounding walls (81, 111) are disposed proximately to at least one of both the rotation members (74, 92).</p> |
