Belt autotensioner

Details Belt autotensioner Belt autotensioner

1989-07-21

1990-02-27

Bui, Thuy M.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Pulley or guide roll has eccentric mount for shifting or...

474135, F16H 712

Patent

active

049042300

ABSTRACT:
A belt autotensioner for giving a desired tension to a belt. It includes a tension pulley pressed against the belt, an eccentric shaft extending through the tension pulley to rotatably support it and formed with a hole arranged eccentrically from the axis of the tension pulley, an actuator having a cylinder and a push rod silidably mounted in the cylinder and having its one end protruding from the cylinder and butting a projection fixed to the eccentric shaft, a bolt extending through the hole in the eccentric shaft and the cylinder of the actuator to pivotally support the eccentric shaft and a spring for biasing the eccentric shaft to pivot it in such a direction as to increase the tension of the belt. The spring may be a torsion coil spring mounted around the eccentric shaft with its one end fixed to the outer periphery of the eccentric shaft and the other end fixed to the cylinder of the actuator.

REFERENCES:
patent: 4504252 (1985-03-01), Honma
patent: 4634407 (1987-01-01), Holtz
patent: 4832665 (1989-05-01), Kadota et al.
patent: 4838839 (1989-06-01), Watanabe et al.

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