Patent ID: 6440021
Filing Date: 2002-08-27
Classification: F16H

Abstract:
A tensioner for applying tension to a force transmitting member, comprising:a casing; a first shaft member rotatably stored in said casing so as to be restrained from moving along an axis; a second shaft member in screwed engagement with said first shaft member, movable in the direction of the axis, restrained from rotating relatively to said casing, and subjected to a load in the direction of the axis from the force transmitting member; and a spring stored in said casing and capable of applying turning force to said first shaft member, wherein a slit extending in the diametrical direction of said first shaft member is formed in an end face of said first shaft member, said end face touching a receiving surface of said casing directly or across a washer and receiving said load acting on said second shaft member, the flatness of the end face of said first shaft member ranging from 1.5 &mgr;m to 15 &mgr;m.