| 摘要 |
A belt tensioner (26) suitable for use with an automotive serpentine belt system comprises a fixed structure (36) adapted to be mounted on an automotive engine, a pivoted structure (40) mounted on the fixed structure for pivotal movement relative thereto, and a torsional spring (44) connected between the fixed structure (36) and the pivoted structure (40) for resiliently biasing the pivoted structure (40) towards a maximum extension position. The torsional spring (44) is in the form of a helical coil connected between the fixed and pivoted structures, a major portion of the helical coil (44) being free from contact with the fixed and pivoted structures and therefore subject to vibration. In accordance with the invention a spring stabilizer (118) is mounted in engagement with the interior of the spring (44) for preventing or inhibiting vibration of the spring (44). |
