Patent ID: 6729991
Filing Date: 2004-05-04
Classification: B60K,F16H

Abstract:
A combined differential gear device comprising:a hollow housing (10) composed of a first housing component body (11) and a second housing component body (12), said housing (10) being configured to be rotationally driven about a rotational axis (L) by a rotational force from an engine (E); an inner gear (21) disposed within said housing (10) and rotatable relative thereto about the rotational axis (L); a sun gear (23) disposed within said housing (10) and rotatable relative to thereto about the rotational axis (L), a part of said sun gear (23) being configured to be arranged inside of said inner gear (21); plural planetary gears (22) disposed between said inner gear (21) and said sun gear (23), and rotatable relative to said housing (10) about the rotational axis (L), each of said plural planetary gears (22) being configured to be revolved about its own revolving axis and to be gear-engaged with respective of said inner gear (21) and said sun gear (23); plural pockets (12a) formed in said second housing component body (12) in which said plural planetary gears (22) are disposed respectively, each of said plural pockets (12a) being configured to frictionally contact an inner peripheral surface thereof with an outer peripheral surface of said planetary gears (22); a hollow casing (31) disposed in said housing (10) and rotatable together with said inner gear (21) about the rotational axis (L); and a differential gear mechanism (30) disposed in said casing (31) and arranged inside of said sun gear (23) so as to rotate together with said inner gear (21) and said casing (31) about the rotational axis (L).