Blade tensioner
AssigneeBorgWarner Inc.
InventorNaosumi Tada
Life of this patent
Estimating the term…
Abstract
A blade tensioner includes a blade shoe having a chain slide face, a plurality of blade springs for applying spring force to the blade shoe, and a spacer member interposed between the adjacent blade springs. Each of the blade springs is in the shape of a leaf spring. The blade springs are positioned and layered on the opposite side of the blade shoe from the chain slide face. The spacer member preferably contacts the corresponding blade spring at two contact points apart from each other at a uniform distance. In the blade tensioner of this invention, the blade spring contacts the spacer member at a constant span, which causes the damping coefficient of the whole blade spring to be constant and also causes the damping performance of the blade tensioner to be stable.
Claims9
A blade tensioner for applying tension to a chain comprising:
- a blade shoe having a chain sliding face;
- a plurality of blade springs for applying spring force to the blade shoe, each of the blade springs being in the shape of a leaf spring, the blade springs being positioned and stacked on an opposite side of the blade shoe from the chain sliding face;
- and
- at least one spacer member interposed between each adjacent blade spring, the spacer member contacting the corresponding blade spring at at least two contact points separated from each other by a uniform distance.
Dependencies are inferred from the claim text.