| 摘要 |
A pulley assembly (1) for a continuously variable transmission in a vehicle, comprising a shaft (2) having an axis (A), a supporting element (7) rotatable about said axis (A), a first half pulley (9) rigidly and rotationally connected to said supporting element (7), a second half pulley (11) facing said first half pulley (9) for defining a seat (13a) adapted to accommodate a belt (13) of the transmission, at least one of the first and second half pulleys (9, 11) being longitudinally mobile with respect to the supporting element (7) , and a clutch (8) comprising a second supporting element (27) connected to the shaft (2), a drum (29) connected to the supporting element (7) and accommodating the second supporting element (27), and a plurality of friction elements (28) hinged to the second supporting element (27) about respective hinge axes (B) to selectively cooperate with the drum (29) . In particular, the respective centres of gravity (G) of said friction elements (28) are located before the respective hinge axes (B) with respect to a direction of rotation of the shaft (2) which defines a forward running condition of the vehicle. |
