Tensioner with improved damping device
AssigneeIna Walzlager Schaeffler oHG
InventorsReinhard Koch, Bolko Schuseil, Thomas Ullein
Life of this patent
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Abstract
A tensioner for a driving member includes a piston (4) guided slidably in a housing (1) and spring-loaded against the driving member. The tensioner further includes a damping device (9, 18) for damping movements of the piston through discharge of hydraulic fluid, such as engine oil, from a pressure chamber (16) via at least one leak gap (13, 26) of the damping device (9, 18). A simple and economic implementation of the leak gap is assured by arranging a rotationally symmetrical body such as a cylinder (10) in a receptacle (11, 24) of the damping device (9, 18), so that the leak gap (13, 26) is formed between the wall (12, 25) of the receptacle and the peripheral surface of the rotationally symmetrical body (10).
Claims13
A tensioner for a driving member, comprising:
- a housing;
- a piston slidably guided in the housing and spring-loaded in the direction of the driving member, said piston defining a pressure chamber;
- and
- a damping device for damping movements of the piston through discharge of hydraulic fluid from the pressure chamber via at least one ring shape or circola leak gap, said damping device including a receptacle and a rotationally symmetrical body arranged in the receptacle such that the leak gap is formed between an inner wall surface of the receptacle and an outer peripheral surface of the rotationally symmetrical body.
Dependencies are inferred from the claim text.