Invention Grant
- Patent Title: Sprial cam clutch actuation system for two-speed transfer case
- Patent Title (中): 用于双速传送箱的仿真凸轮离合器致动系统
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Application No.: US11626510Application Date: 2007-01-24
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Publication No.: US07650808B2Publication Date: 2010-01-26
- Inventor: Richard Mizon , John D. Zalewski
- Applicant: Richard Mizon , John D. Zalewski
- Applicant Address: US MI Troy
- Assignee: Magna Powertrain USA, Inc.
- Current Assignee: Magna Powertrain USA, Inc.
- Current Assignee Address: US MI Troy
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: F16H59/00
- IPC: F16H59/00 ; F16H61/00 ; F16H63/00

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 face cam with spiral cam surfaces and a control gear with radially-moveable rollers engaging the cam surfaces. The control gear is rotatively driven by the geartrain. The face cam is axially moveable for controlling engagement of the friction clutch. An anti-rotation mechanism limits rotation of the face cam in response to continued rotation of the control gear.
Public/Granted literature
- US20070180940A1 Sprial Cam Clutch Actuation System For Two-Speed Transfer Case Public/Granted day:2007-08-09
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