Autotensioner
AssigneeNsk Ltd.
InventorsKouichi Sakai, Hayato Oumi, Hiroshi Suzuki
Life of this patent
Estimating the term…
Abstract
An autotensioner for use in applying a tension to a moving belt, includes a bracket secured to an engine body and having a projection, a rocking member rockingly mounted to the bracket through a first axle and having an arm, a pulley rotatably mounted to the rocking member through a second axle for applying the tension to the moving belt, and a damper device provided between the projection of the bracket and the arm of the rocking member.
Claims9
An autotensioner for use in applying a tension to a moving belt, comprising:
- a bracket attached to an engine body at a first position,
- a rocker member rockingly mounted to the bracket and having an arm,
- a rocker bearing section for pivotally mounting the rocker member to the bracket, the rocker bearing section comprising a cylindrical section, formed on the bracket and having an inner peripheral surface,
- a first pivot shaft having an outer peripheral surface and formed on the rocker member so as to be inserted into the cylindrical section, said first pivot shaft being formed on the rocker member at a second position displaced from said first position where the bracket is attached to the engine body,
- a sliding bearing provided between the outer peripheral surface of the first pivot shaft and the inner peripheral surface of the cylindrical section,
- a second pivot shaft provided in the rocker member,
- a pulley rotatably mounted to the rocker member through the second pivot shaft, and
- a damper device provided between the bracket and the rocker member.
An autotensioner for use in applying a tension to a moving belt, comprising:
- a fixed member attached to an engine body at a first position and having a projection,
- a rocker member rockingly mounted to the fixed member at a second position displaced from the first position where the fixed member is attached to the engine body and having an arm,
- a rocker bearing section for pivotally mounting the rocker member to the fixed mounting member,
- a pivot shaft provided in the rocker member,
- a pulley rotatably mounted to the rocker member through the pivot shaft,
- a biasing spring provided between the rocker member and the fixed member to apply a resilient force to the pulley so as to press the pulley against the belt, and
- a damper device provided between the projection of the fixed member and the arm of the rocker member.
An autotensioner for use in applying a tension to a moving belt comprising:
- a bracket having a projection and fixed to an engine body at a first position,
- a rocker member having an arm and rockingly mounted to the bracket at a second position displaced from said first position where the bracket is fixed to the engine body,
- a rocker bearing section rockingly mounting the rocker member to the bracket,
- the rocker bearing section comprising a cylindrical section having an inner peripheral surface provided in the bracket, a first pivot shaft having an outer peripheral surface, provided in the rocker member and inserted into the cylindrical section, and a sliding bearing provided between the outer peripheral surface of the first pivot shaft and the inner peripheral surface of the cylindrical section,
- a second pivot shaft provided in the rocker member,
- a pulley rotatably mounted to the rocker member through the second pivot shaft,
- a biasing spring provided between the rocker member and the bracket to apply a resilient force to the pulley to press the pulley against the belt, and
- a damper device provided between the projection of the bracket and the arm of the rocker member.
Dependencies are inferred from the claim text.