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    • 10. 发明申请
    • SPIRAL CAM CLUTCH ACTUATION SYSTEM FOR TWO-SPEED TRANSFER CASE
    • 用于双速传送的螺旋式离合器执行系统
    • WO2007092328A3
    • 2008-01-10
    • PCT/US2007002930
    • 2007-02-01
    • MAGNA POWERTRAIN USA INCMIZON RICHARDZALEWSKI JOHN D
    • MIZON RICHARDZALEWSKI JOHN D
    • F16D13/00
    • B60K17/3467B60K23/0808F16D13/54F16D23/12F16D27/004F16D28/00F16D2023/123F16H2200/0034Y10T74/19228Y10T74/19279
    • 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.
    • 传送箱包括双速范围单元,摩擦离合器,致动机构和控制系统。 致动机构包括电动马达,由马达驱动的齿轮箱,范围致动器组件和模式致动器组件。 范围致动器组件包括由齿条驱动的驱动轴,由驱动轴驱动的凸轮和具有保持在形成在凸轮中的凹槽中的从动件的换档拨叉和与该范围单元相关联的换档轴环接合的叉。 模式致动器组件具有带有螺旋凸轮表面的面凸轮和具有与凸轮表面接合的径向可移动的辊的控制齿轮。 控制装置由齿轮驱动。 面凸轮可轴向移动以控制摩擦离合器的接合。 响应于控制齿轮的持续旋转,防旋转机构限制面凸轮的旋转。