Hydraulic clutch assembly

摘要

A hydraulic clutch including: a gear (46) rotatably mounted on a transmission shaft and a clutch cylinder (59) fixedly mounted on the transmission shaft; a first group of friction elements (53) respectively and relatively non-rotatably supported on the gear and the clutch cylinder in such a manner as to be slidable along an axis of the clutch; a pressure disk (62) disposed opposite to the first group of friction elements; a spring (63) for moving the pressure disk towards the first group of friction elements to bring the friction elements into engagement with each other; a piston (56) disposed in such a manner as to be slidable along the axis of the clutch on the opposite side of the pressure disk with the first group of friction elements therebetween, thereby forming a hydraulic fluid chamber within the clutch cylinder; an operation disk (63) disposed in such a manner as to be slidable along the axis of the clutch between the piston and the first group of friction elements; and an interlocking rod (64) extending along the axis of the clutch for interlocking the operation disk with the pressure disk in such a manner as not to be relatively movable with respect to each other. In this arrangement, the pressure disk is moved away from the first group of friction elements through the operation disk and the interlocking rod by an effect of hydraulic pressure acting on the piston, so that the friction elements are released from engagement with each other.