| 摘要 |
<p>The mechanical chain tensioner (10) comprises a housing (11) having a first bore (12) with a piston (20) slidably received within it, and a number of belleville disc springs (30) having non-linear force-displacement characteristics. The springs biasing the piston at a first end in a protruding direction from the bore include a first (1) and second (2) disc spring of a first thickness stacked in series. There is a tensioner arm (25) at a second end of the piston for engaging a chain (15). There is a third disc spring (3) that may be stacked in series with a fourth disc spring (4) of a second thickness. The third disc spring may be stacked in series with the second disc spring, with the second thickness being greater than the first thickness. There may be a fifth disc spring (5) that is stacked in series with a sixth disc spring (6) of a third thickness, the fifth disc spring being stacked in series with the fourth disc spring, the third thickness being greater than the second thickness.</p> |
