| 摘要 |
<p>A continuously variable transmission comprising a driving pulley (22) coupled to a crankshaft (13) of an engine (10), a driven pulley (23) disposed rearwards of the driving pulley (22), and a V-belt (24) wound around the driving pulley (22) and the driven pulley (23). A transmission case (21) accommodates the driving pulley (22), the driven pulley (23) and the V-belt (24), the transmission case (21) including a first inner surface (201S), a second inner surface (202S) and a first rib (101-105). The first inner surface (201 S) extends in a first direction. The crankshaft (13) is inserted into the first inner surface (201S). The second inner surface (202S) extends in a second direction. The second inner surface (202S) is connected with the first inner surface (201 S). The first rib (101-105) is connected with the first inner surface (201 S) and the second inner surface (202S), the first rib (101-105) overlapped with the V-belt (24) in a plan view of the first inner surface (201 S), and a width of the first rib (101-105) in the second direction increased as the distance from the second inner surface (202S) decreases.</p> |
