| 摘要 |
<p>1. A tensioning and guiding device for a transmission element (1) such as an endless chain or belt extending around a driving wheel (2) and a driven wheel (3) and adapted, in particular, to the timing gear of internal combustion engines, comprising a resiliently yieldable element (4, 24) having two branches (4a, 4b) of which one (4b) bears against the slack portion (10) of the element (1), the end of this branch (4b) cooperating with an anti-return device (11, 12) which accompanies the displacement of said end in one direction when the deflection of the slack portion (10) increases, and prevents any return in the opposite direction of this end in the case of overtensioning of the slack portion, characterised in that the resiliently yieldable element (4, 24) is fixed by the end of one (4a, 24a) of its branches on a fixed support (5) in the vicinity of the disengagement of the element (1) from the driven wheel (2) and this same branch (4a) bears against the taut portion of the transmission element (1).</p> |
