Transmission with radially stacked gear sets including annular gear

摘要

A transmission includes a first gear set with a first sun gear member rotatable about a first axis of rotation, a first carrier member, and a first ring gear member radially outward of and concentric with the first sun gear member. The first ring gear member has a radially inward-facing surface with inner teeth and a radially outward-facing surface with outer teeth. A second gear set has a second carrier member, and a second ring gear member radially outward of and concentric with the first ring gear member. The second ring gear member has a radially inward-facing surface with inner teeth. A first annular gear has a radially inward-facing surface with inner teeth and a radially outward-facing surface with outer teeth. The first annular gear is rotatable about a second axis of rotation and meshes with the first ring gear member.

主权项

1. A transmission comprising:
a first gear set having:
a first sun gear member rotatable about a first axis of rotation;a first carrier member;a first ring gear member radially outward of and concentric with the first sun gear member and rotatable about the first axis of rotation; wherein the first ring gear member has a radially inward-facing surface defining inner teeth and a radially outward-facing surface defining outer teeth; a second gear set having:
a second carrier member;a second ring gear member radially outward of and concentric with the first ring gear member and rotatable about the first axis of rotation; wherein the second ring gear member has a radially inward-facing surface defining inner teeth; wherein at least one of the first gear set and the second gear set includes a first annular gear having a radially inward-facing surface defining inner teeth and a radially outward-facing surface defining outer teeth; wherein the first annular gear is rotatable relative to the first ring gear member about a second axis of rotation that rotates about the first axis of rotation; and wherein the first annular gear meshes with the first ring gear member.