Tensioner with reduced rattling

Details Tensioner with reduced rattling Tensioner with reduced rattling

1990-09-17

1992-04-14

Bui, Thuy M.

Endless belt power transmission systems or components

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

Tension adjuster or shifter driven by electrical or fluid motor

474138, F16H 708

Patent

active

051043599

ABSTRACT:
A tensioner for vehicle belts produces reduced rattling because radial forces are not transferred to the plunger. A tensioner body has a columnar hole extending from an open end toward a closed end. The plunger is fitted into the columnar hole and separates the columnar hole into first and second chambers. The plunger has sufficient clearance with respect to the body to permit restricted passage of fluid between the chambers. A rod pressed by the belt extends into the columnar hole and presses the plunger against the biasing force of a spring. In order to reduce the transfer of radial forces from the rod to the plunger, either the lower surface of the rod or the upper surface of the plunger is formed in a semi-spherical shape.

REFERENCES:
patent: 4790796 (1988-12-01), Okabe et al.
patent: 4911679 (1990-03-01), Inoue et al.
patent: 4911680 (1990-03-01), Kodama et al.

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