| 摘要 |
A continuously variable transmission includes a shaft (60), first and second rotary members (10, 20), a sun roller (30), a carrier (40), planetary balls (50), a gear shifter for changing a gear ratio between input and output by tilting each of the planetary balls, a casing (CAt) for accommodating these elements, a lubricating oil supply opening {for example, a discharge opening of a radial oil passage (62)} for supplying lubricating oil into the casing from a radially inner side toward a radially outer side. The casing includes a discharge opening (92) for discharging the lubricating oil in the casing to the outside of the casing, the discharge opening (92) being provided in at least one of side walls of the casing in an axial direction of the shaft and radially outside the lubricating oil supply opening. As seen in the axial direction, the discharge opening is formed either at a position that crosses a contact section between the planetary ball and each of the first and second rotary members or an auxiliary contact section, or on a radially outside of the contact section or the auxiliary contact section. |
