| 摘要 |
<p>A tensioner (10) comprises a base (20) and a pivot shaft (16) extending from the base. A spring (18) is connected with the pivoting arm (14) to bias the arm (14) into tensioning engagement with an endless drive component of an engine. A floating backstop assembly comprises a lever member (36) and an arm engagement member (30). The lever member (36) is rotatably mounted on the base and the arm engagement member (30) is engaged with the lever member. The lever member (36) and the arm engagement member (30) are oriented such that the arm engagement member (30) can be biased by the spring (18) into a direction towards the arcuate surface structure of the pivoting arm (14) so as to apply a frictional force sufficient to stop movement of the arm (14).</p> |
