Applying a load to a clutch pack

摘要

An apparatus for applying a load to a clutch pack system in a vehicle comprising a motor having a shaft for providing torque, a gearset interfacing with the shaft, a ball screw mechanism linked to the gearset including a ball screw having helically extending retention grooves and lands and a ball nut having a ball nut path and lands on the inner face of the ball nut. The ball nut includes a return passage and is threadably mounted to the ball screw and thus defines a pathway extending from a first end to a second end of the ball nut. The pathway captures a plurality of spherical balls between the ball nut and the ball screw, the balls being configured for circulation through the return passage and around a portion of the helically extending retention grooves. The apparatus also includes a thrust bearing axially interfaced with the ball nut and a load ring movable by the thrust bearing as well as a plurality of pins from the load ring and extending in an axial direction to interface with the clutch pack system.