CHAIN DRIVE TENSION SPRING EFFORT REGULATION MECHANISM

摘要

1. A tensioner for a passive tensioner system for tensioning a chain having a chain span or belt, comprising: a housing having a cylindrical hole; a hollow piston comprising a housing having an open end and a closed end, and a hollow inner portion having an inner diameter; a hollow movable a sleeve comprising a hollow body having an inner part with an inner diameter having a first part located in a cylindrical hole of the body and a second part and an inner flange at the end of the second part, the inner flange having an upper surface and lower surface; moreover, the hollow piston and the hollow movable sleeve are located coaxially in the cylindrical bore of the housing so that one of the hollow piston or hollow movable sleeve is located in the hole of the other from the hollow piston or hollow movable sleeve; piston spring entering the hollow interior of the piston for displacing the piston outward from a sleeve having a first end touching the inner surface of the closed end of the piston and a second end touching the upper surface of the flange of the movable sleeve; bias spring flowing in the bore of the housing and the hollow inner part of the movable sleeve to move the bushing out of the housing with the first end in contact with the lower surface of the inner flange of the sleeve and the second end; the first hydraulic chamber formed by the hollow inner part of the housing of the movable sleeve, the hollow inner part of the piston and the hole a housing having a first fluid inlet; a second hydraulic chamber formed by a cylindrical bore of the housing and a movable sleeve, with an inwardly directed force acting to