| CPC F16H 48/19 (2013.01) [B60K 17/165 (2013.01); F16H 48/22 (2013.01); F16H 48/34 (2013.01); F16H 2048/343 (2013.01)] | 16 Claims |
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1. A driving torque distribution apparatus, comprising:
a first clutch unit including a first drum;
a second clutch unit; and
first and second operation units; and
a drive gear, a worm wheel, a worm gear, and a cam ring,
wherein the first and second clutch units are configured on axes of first and second driveshafts within a case of an axle of a vehicle, wherein the first and second clutch units are controlled by the first and second operation units, respectively, to independently distribute a driving torque transmitted through the drive gear to the first and second driveshafts,
wherein, in the first clutch unit, the drive gear is spline-coupled to a frontal end portion of the first drum through an extension end portion formed outward in an axial direction thereof to be movable in the axial direction, and
wherein the first and second operation units further includes:
a ball ramp device including a plurality of grooves having inclined depths in opposite directions on corresponding cross-sections of the worm wheel rotated by the worm gear and the cam ring fixed in a rotation direction, the ball ramp device configured to generate an axial directional pressurizing force in conjunction with rotation of the worm wheel as a corresponding ball is rolling-supported by the grooves between the worm wheel and the cam ring.
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