| 摘要 |
A belt tensioner for a motor vehicle engine, comprises a spindle portion and an eccentric pivoted structure mounted for pivoted movement on the spindle portion. A rotatable pulley member is mounted for rotation on the eccentric pivoted structure, and a spring is constructed and arranged to bias the eccentric pivoted structure and hence the rotatable pulley member into tensioning engagement with a belt trained about the pulley member. A force applying structure is constructed and arranged to force the spindle portion toward the belt against a counteracting belt load force applied by the belt to the rotatable pulley. Linear guiding structure is constructed and arranged to limit movement of the spindle portion to linear movement toward the belt during application of force by the force applying structure during installation of the belt tensioner.
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