| 摘要 |
A viscous-fluid disc damper includes an input-side drive plate having a containing space, an output-side driven plate disposed in the containing space, and a viscous fluid medium damper mechanism arranged between both plates for absorbing torsional torque. The damper mechanism has a fluid housing provided in the peripheral portion of the drive plate and opening radially toward the center, choke projections provided on the periphery of the driven plate which project into the fluid housing, sliders slidably located in the fluid housing and fitted over the choke projection, and choke tabs formed in the fluid housing. The flow passage of the choke tab is smaller than that of the choke projection. The viscous-fluid disc damper can include a fluid storage for compensating fluid within the fluid housing, via a connecting path between the fluid storage and the fluid housing. In the viscous-fluid disc damper, the hysteresis torque at small operating angles is low, due to the low viscous resistance effected while at large operating angles it is high due to the high viscous resistance effected. If some amount of fluid happens to leak from the fluid housing during operation, the loss is compensated by centrifugal force which drives the fluid from the fluid storage through the connecting path into the fluid housing.
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