Motor driven transfer case with concentric actuation

摘要

A transfer case (30) and a method of assembly can include a range shifting assembly (60) and a clutch assembly (80) located axially adjacent to one another along a common primary axis. An actuating device (32) can include a concentric gear located coaxially interposed between the range shifting assembly (60) and the clutch assembly (80) for rotation about the common primary axis. The concentric gear (48) can actuate the range shifting assembly (60) during a portion of angular rotation about the common primary axis and can actuate the clutch assembly (80) during a mutually exclusive portion of angular rotation about the common primary axis. The actuating device (32) can include a barrel cam (59), a plurality of springs engageable between the barrel cam (59) and the concentric gear (48), and a shift fork (68) operably engageable with a cam surface groove (57) for guided axial movement to actuate the range shifting assembly (60) between a low-range and high-range drive mode.

主权项

1. In a transfer case (30) including an input shaft (34) having a primary axis of rotation, a first output shaft (36) coaxially aligned with and rotatable about the primary axis, a second output shaft (38) rotatable about a secondary axis parallel to the primary axis, and a power transmission device (40) located between the first output shaft (36) and the second output shaft (38), the improvement comprising:
a range shifting assembly (60) and a clutch assembly (80) located coaxial with respect to the primary axis and axially adjacent to one another, the range shifting assembly (60) operably connected between the input shaft (34) and the first output shaft (36) to axially shift between a low-range drive mode and a high-range drive mode, the clutch assembly (80) operably connected to the power transmission device (40) to axially move between an engaged position and a disengaged position to transfer into or out of a state creating driving continuity for transferring drive torque between the first output shaft (36) and the second output shaft (38); and an actuating device (32) including a rotatable concentric gear (48) mounted coaxial with respect to the primary axis and axially interposed between the range shifting assembly (60) and the clutch assembly (80), the concentric gear (48) actuating the range shifting assembly during a portion of angular rotation about the primary axis and actuating the clutch assembly (80) during a mutually exclusive portion of angular rotation about the primary axis.