Belt tensioner with elastic damping feature
First Claim
1. A belt tensioner comprising a fixed shaft of a fixed member, a pivotal member adapted to be rotated about said fixed shaft as the center of rotation, a tension pulley provided at the end of an arm member extended radially from said pivotal member and pivotally mounted on said pivotal member by a pivot extending parallel to said fixed shaft, a spring having one end retained by said pivotal member and adapted for applying to said pivotal member a spring force pressing said tension pulley to a belt, and a solid damping device provided between said pivot member and said fixed member and having one axial end secured to said pivotal member and the other axial end secured to said fixed member, wherein a relative movement between said fixed member and said pivotal member causes said solid damping device to be twisted, and the deformation of said spring and the deformation of said solid damping device during usage are adapted to be set independently of each other.
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Accused Products
Abstract
The belt tentioner includes a solid damping device between the pivotal member and the fixed member, and the amount of deformation of the solid damping device and that of a spring are adapted to be set independently of each other.
This permits the vibration damping operation by the solid damping device and the tensioning operation by the spring to be performed under the respective optimum conditions.
55 Citations
12 Claims
- 1. A belt tensioner comprising a fixed shaft of a fixed member, a pivotal member adapted to be rotated about said fixed shaft as the center of rotation, a tension pulley provided at the end of an arm member extended radially from said pivotal member and pivotally mounted on said pivotal member by a pivot extending parallel to said fixed shaft, a spring having one end retained by said pivotal member and adapted for applying to said pivotal member a spring force pressing said tension pulley to a belt, and a solid damping device provided between said pivot member and said fixed member and having one axial end secured to said pivotal member and the other axial end secured to said fixed member, wherein a relative movement between said fixed member and said pivotal member causes said solid damping device to be twisted, and the deformation of said spring and the deformation of said solid damping device during usage are adapted to be set independently of each other.
Specification