| 摘要 |
<p num="1"><br/><br/><br/>A linear tensioner (22, 122, 222, 322, 422, 522) driven by a torque input is <br/>provided having a base (24, 124, 224, 324, 424, 524), a pinion (26, 126, 226, <br/>326) rotatably mounted on the base, a rack (28, 128, 228, 328, 329) <br/>operatively engaged with the pinion, an arm (30, 130, 230, 330, 331, 430, 530) <br/>slideably mounted on the base (24, 124, 224, 324, 424, 524) and coupled to the <br/>rack (28, 128, 228, 328, 329) for linear movement therewith, and a pulley (32, <br/>132, 332, 333, 432, 532) rotatably mounted on the arm (30, 130, 230, 330, 331, <br/>430, 530) to engage and tension an associated power transmitting element such <br/>as a belt or chain. The tensioner (22, 122, 222, 322, 422, 522) further <br/>includes a means (40, 140, 240, 340, 440, 540, 42, 43) for applying a <br/>rotational force to the pinion (26, 126, 226, 326), which may be, for example, <br/>a torsion spring (40, 140, 240, 340, 440, 540), a servo motor (42) or a <br/>hydraulic pump (43).<br/>
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