Patent ID: 8025137
Filing Date: 2011-09-27
Classification: B60K,F16D,F16H,Y10T

Abstract:
1. A power transfer/transmission apparatus comprising: an input gear unit and an output gear unit rotatably supported on a stationary carrier, and including two gears arranged on different axial lines and mesh with each other and through which the input gear unit and the output gear unit cooperate with each other; a pair of clutch adjusting mechanisms that are connected to ends of the output gear unit, respectively, the clutch adjusting mechanisms each having a frictional multiplate clutch that is engaged/disengaged according to an energization control of an electromagnet to adjust output power; a pair of axles connected to the clutch adjusting mechanisms, respectively, each of the axles passing through an opening of the stationary carrier and connected to a wheel; hollow joints formed at the ends of the output gear unit and having an engaging portion on an inner periphery thereof; a clutch input unit and a clutch output unit provided with each of the clutch adjusting mechanisms and between which the frictional multiplate clutch is arranged; the clutch input unit rotating together with the output gear unit and having a first end disposed in an axial inner area proximal to the output gear unit in an axial direction thereof and a second end disposed in an axial outer area opposite to the first end in the axial direction and extending across the frictional multiplate clutch, whereby the frictional multiplate clutch is axially interposed between the first and second ends, the clutch input unit comprising, the clutch output unit including a hollow axle joint formed on an inner periphery thereof at the second end of the clutch output unit, the hollow axle joint into which a respective one of the pair of axles is inserted and connected such that the clutch output unit and the respective one axle may rotate together; the first end of the clutch input unit being supported to the carrier in the radial direction through the output gear unit and a fourth bearing supporting the output gear unit and by insertion and connection of the joint shaft to the hollow joint; the second end of the clutch input unit supported to the carrier in the radial direction through the supported portion, the first end of the clutch output unit supported to the clutch input unit in the radial direction through the first bearing supporting the first end of the clutch output unit and the output unit being supported at a position axially outwardly from the connection position at which the joint shaft is spline-engaged with the hollow joint; and the second end of the clutch output unit supported to the clutch input unit in the radial direction through the second bearing supporting the second end of the clutch output unit and the supporting portion at a position axially outwardly from the frictional multiplate clutch.