| 摘要 |
A tensioner is disclosed that achieves asymmetric damping in part by using a ramp-ramp assembly. The tensioner (10, 100) comprises a tensioner axis (12, 108) defining a pivot axis (11, 11), an arm (1, 102) mounted on the tensioner axle (12, 108) so as to permit the arm (1, 102) to pivot about the pivot axis (11, 111), a first tensioner component (5, 112) having first ramp features (9, 113), a second tensioner component (4, 118) having second ramp features (6, 119), and a ramp bushing (3, 116) having an upper ramp surface (7, 132) and a lower ramp surface (8, 134). The first tensioner component (5, 112) is engaged to the arm (1, 102) for rotation therewith and the second tensioner component (4, 118) is coupled to the tensioner axle (12, 108). The ramp bushing (3, 116) is disposed between the first tensioner component (5, 112) and the second tensioner component (4, 118) such that the upper ramp surface (7, 132) seats within the first ramp features (9, 113) and the lower ramp surface (8, 134) seats within the second ramp features (6, 119). |
