| 摘要 |
PURPOSE: Belt and pulley structure for a continuously variable transmission is provided to increase capacity of transmission torque, and to improve hydraulic pressure efficiency by engaging a rib of the pulley with a groove of the belt. CONSTITUTION: Plural ribs(31) are formed radially in the surface of a pulley(30), and plural grooves are formed in a belt. The transmission gear ratio is varied continuously by changing the width of the pulley of a continuously variable transmission, and ribs are engaged with grooves. The gap between ribs is increased radially, and decreased in the center of the pulley. The number of ribs is increased according to the gap between ribs. Hydraulic pressure efficiency is improved with engaging the pulley with the belt, and capacity of power train is increased with modifying the belt and the pulley.
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