Planetary gear transmission systems or components – Variable speed or direction transmission combined with... – Variable speed or direction is planetary transmission
Patent
1999-08-06
2000-08-08
Ta, Khoi Q.
Planetary gear transmission systems or components
Variable speed or direction transmission combined with...
Variable speed or direction is planetary transmission
475228, 74425, 192 12D, F16D 6702, F16H 5700
Patent
active
060994304
ABSTRACT:
A clutched actuator for use in a transfer case is disclosed which may be used in conjunction with electronic traction control systems and anti-lock braking systems where the clutched actuator system is required to quickly disengage the four-wheel drive of the vehicle. The clutched actuator is operably coupled to the transfer case of the vehicle drive system through a sector plate. The clutched actuator includes a worm drive motor assembly providing the base driving mechanism, a clutching mechanism, and a gear reduction mechanism for reducing the torque capacity required of the clutch mechanism. When the clutching mechanism is engaged, power is transmitted from the worm drive through the gear reduction mechanism to the output shaft to selectively engage the mode of operation of the transfer case, i.e., two-wheel or four-wheel drive mode, and the drive torque distribution between the front and rear wheels. The worm gear is non-backdrivable such that the motor need not provide a holding torque. When the clutching mechanism is disengaged, the worm drive is decoupled from the gear reduction mechanism for eliminating the holding torque and inertia associated with those components such that the energy stored in the transfer clutch can be quickly released.
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New Venture Gear Inc.
Ta Khoi Q.
LandOfFree
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