| 摘要 |
A tensioner (1) for a belt drive comprises a base(2, 3) defining an axis (A), a mobile element (4) hinged onto axis (A) and defining a guiding surface (22), an elastic helical element (18) having a square or rectangular cross section for actuating the mobile element (4) and an idle pulley (5) surrounding the guiding surface (22). The tensioner (1) further comprises a journal bearing (4, 29, 32, 33) for supporting the pulley (5) on the guiding surface (22).
|
