Clutch actuation system for two-speed active transfer case

Details Clutch actuation system for two-speed active transfer case Clutch actuation system for two-speed active transfer case

2005-08-16

2005-08-16

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural outputs

C475S149000, C475S204000

Reexamination Certificate

active

06929577

ABSTRACT:
A transfer case includes a two-speed range unit, a friction clutch, an actuation mechanism, and a control system. The actuation mechanism includes an electric motor, a geartrain driven by the motor, a range actuator assembly and a mode actuator assembly. The range actuator assembly includes a driveshaft driven by the geartrain, a cam driven by the driveshaft, and a shift fork having a follower retained in a groove formed in the cam and a fork engaging a shift collar associated with the range unit. The mode actuator assembly has a cam member with ramp surfaces and a control gear with rollers engaging the ramp surfaces. The control gear is rotatively driven by the geartrain. The cam member is axially moveable for controlling engagement of the friction clutch. An anti-rotation mechanism limits rotation of the cam member in response to continued rotation of the control gear.

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