| 摘要 |
A tensioner (20) comprising a base (24), a cantilever (26) arranged on the base (24) and rotates around a first center axis relative to the base (24), a flexible element (48) arranged between the base (24) and the cantilever (26), where the flexible element (48) is used for swaying the cantilever (26), thus allowing the cantilever (26) to rotate relative to the base (24), and a friction apparatus (54) arranged between the flexible element (48) and the base (24) or the cantilever (26), where the friction apparatus (54) buffers the relative motion between the cantilever (26) and the base (24), and where the flexible element (48) applies a first pressure along a radial direction onto the friction apparatus (54), thus allowing the friction apparatus (54) to generate a first frictional force between the base (24) and the cantilever (26). The tensioner (20) also comprises a supporting block. The supporting block applies a second pressure along the radial direction onto the friction apparatus (54), thus allowing the friction apparatus (54) to generate a second frictional force between the base (24) and the cantilever (26). Under the joint action of the first frictional force and the second frictional force, the rotation of the cantilever (26) relative to the base (24) is buffered. The cantilever (20) provides increased friction damping. |
