Patent ID: 7094172
Filing Date: 2006-08-22
Classification: B60K,F16H,Y02T

Abstract:
1. The drive system comprising: a reduction gear mechanism operative to transmit drive torque from a motor; the reduction gear mechanism comprising a finally rotatable drive gear; a differential comprising: a differential housing supporting the drive gear and being configured to be driven by the drive gear; and a differential mechanism supported to the differential housing; a clutch system operative to connect the drive gear and the differential housing with each other; and a casing supporting the differential housing, and housing the reduction gear mechanism, the differential housing, the clutch system, and the differential mechanism therein, wherein the casing reserves an oil therein, wherein the differential housing defines a first opening, wherein the differential housing has therein a space in fluid communication with a space within the casing through the first opening and across the drive gear, wherein the clutch system comprises: a clutch mechanism; an electromagnet operative to produce clutch-operation force for the clutch mechanism; a clutch housing integrally rotatably connected to the drive gear; and a rotor between the clutch housing and the differential housing, wherein the clutch housing and the differential housing are spaced from each other.