Planetary gear transmission systems or components – Differential planetary gearing – Bevel gear differential
Patent
1999-02-18
2000-07-04
Ta, Khoi Q.
Planetary gear transmission systems or components
Differential planetary gearing
Bevel gear differential
475150, 475233, 475241, F16H 4830
Patent
active
060831340
ABSTRACT:
A locking differential gear mechanism of the type which can operate in either a manual mode or an automatic mode. The mechanism includes a gear case (11), and differential gearing including a side gear (23). The side gear (23) includes a flange portion (43) having a set of gear teeth (45), and adjacent thereto is a locking member (47), also having a set of gear teeth (49), disposed to engage the gear teeth on the flange portion. A ball ramp actuator is disposed adjacent the locking member (47), which is preferably integral with an inner actuating plate (57). There is an outer actuating plate (59), preferably disposed outside the gear case (11), and a set of cam balls (73) operable with the actuating plates (57,59) to cause ramp-up, and engagement of the gear teeth (45,49). An electromagnetic coil assembly (75) is disposed adjacent the ball ramp actuator, and is operable to retard rotation of the outer actuating plate (59), and initiate ramp-up, in response to an electrical input signal. The resulting locking differential is very compact and can be engaged or disengaged very quickly.
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Eaton Corporation
Kasper L. J.
Ta Khoi Q.
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