Torsional vibration damping mechanism

Details Torsional vibration damping mechanism Torsional vibration damping mechanism

1987-08-20

1989-10-17

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192 58B, 1921061, 464 24, 464 68, F16D 314

Patent

active

048740748

ABSTRACT:
A torsional vibration damping mechanism (30 or 130 or 230) is disclosed in a clutch plate assembly for a vehicle driveline. In a schematically illustrated form the mechanism (30) includes a relative high rate or stiff spring set (36) for transmitting torque and alternating torsionals when a transmission input shaft (22) is connected to a load, a relatively lower or less stiff spring set (38) connected in series with spring set (36) and for attenuating torsionals when the shaft (22) is not connected to a load, and a viscous damper (44) disposed in parallel with both spring sets (36, 38) and operative to dampen recoil of both spring sets. In one detailed embodiment of the mechanism (130) the stiff spring sets (136) includes a pair of nested, spiral wound springs (135, 137). In another embodiment of the mechanism (230) the stiff spring set (236) includes helical compression springs (235, 237).

REFERENCES:
patent: 2284349 (1942-05-01), Thelander
patent: 4212380 (1980-07-01), Billet
patent: 4304107 (1981-12-01), Fall et al.
patent: 4440283 (1984-04-01), Nioloux
patent: 4576259 (1986-03-01), Bopp
patent: 4601676 (1986-07-01), Tojima
patent: 4726454 (1988-02-01), Aiki
patent: 4790792 (1988-12-01), Bopp

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