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US 2021/0054912 A1Published application
Variable force tensioner arm with cap disk spring
AssigneeBorgWarner Inc.
InventorsKeith B. COBB, Sean SIMMONS, Kevin TODD
Life of this patent
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Abstract
A stack of disk springs are placed between a second piston of a dual hydraulic variable force tensioner system and a hydraulic tensioner arm to allow much higher spring rates if desired. The springs may be stacked in multiple configurations to provide different spring rates. Package space can be reduced depending on the number of springs and orientations of said springs within the tensioner arm.
Claims13
A tensioner arm comprising:
- a body having a first surface for contacting a chain or belt and a second surface, opposite the first surface defining a cavity;
- a cap received within the body;
- and
- at least two spring sets, each spring set being oriented within the cavity between the cap and the body of the tensioner arm, wherein at least one of the spring sets is oriented in a first direction between the cap and the cavity and a second spring set is oriented in a second direction, opposite the first direction and the at least two spring sets bias the cap away from the body of the tensioner arm.
1 more element
A tensioner arm comprising:
- a body having a first surface for contacting a chain or belt and a second surface, opposite the first surface defining a cavity;
- a cap received within the body;
- and
- a plurality of spring sets stacked within the cavity between the cap and the body of the tension arm biasing the cap away from the body of the tensioner arm, each spring set comprising a first spring and a second spring, wherein a first spring of the spring set is oriented in a first orientation and a second spring of the spring set is oriented in a second orientation, opposite the first orientation.
1 more element
Dependencies are inferred from the claim text.