Chain or belt tensioner with a one-way clutch
AssigneeKoyo Seiko Co., Ltd.
InventorsYasushi Kadota, Yoshikazu Nishida
Life of this patent
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Abstract
A tensioner comprising a first cylindrical member to be fixedly attached to a stationary portion, a movable eccentric member in the form of a cylinder and eccentrically rotatably provided around the first member, an idler in the form of a hollow cylinder and rotatably provided around the movable eccentric member for contact with a wrapping connector driving member, and a spring provided between the stationary portion and the movable eccentric member for biasing the eccentric member in a direction to press the idler into contact with the wrapping connector driving member. A one-way clutch is provided between the first member and the movable eccentric member.
Claims3
A tensioner comprising a first cylindrical member to be fixedly attached to a stationary portion, a movable eccentric member in the form of a cylinder and eccentrically provided around the first member with a one-way clutch interposed therebetween, an idler in the form of a hollow cylinder and rotatably provided around the movable eccentric member for contact with a wrapping connector driving member, and a spring provided between the stationary portion and the movable eccentric member for biasing the eccentric member in a direction to press the idler into contact with the wrapping connector driving member, the one-way clutch permitting the eccentric member to rotate in a direction to press the idler against the wrapping connector driving member but preventing the eccentric member from rotating in a direction to move the idler from the wrapping connector driving member.
Dependencies are inferred from the claim text.