Machine element or mechanism – Gearing – Nonplanetary gearing differential type
Patent
1994-09-27
1996-07-30
Bonck, Rodney H.
Machine element or mechanism
Gearing
Nonplanetary gearing differential type
192 49, 192 93A, F16H 4814
Patent
active
055401198
ABSTRACT:
A differential drive assembly for differentially transferring rotational power from a source of input power to a pair of output shafts without the use of internal gears. The assembly includes a drive member adapted to be rotatably driven by the source of input power. First and second auxiliary members are provided, each having an inner face located in opposition to a respective planar face of the drive member. The auxiliary members are rotatably and axially moveable with respect to the drive member over a predetermined range. First and second clutch assemblies, preferably constructed of a plurality of interleaved frictional plates, are selectively engageable by movement of the auxiliary members to transfer the rotational power from the drive member to an associated output shaft. Cam mechanisms are provided to axially move a respective auxiliary member such that engagement of a respective clutch assembly may be selectively effected. In some exemplary constructions, each of the cam mechanisms comprises one or more radially disposed roller members rotatably carried by the drive member. Each such roller member is received in a cam indentation defined in the associated auxiliary member. A coordinator member rotatably extends through the drive member and interconnects the auxiliary members to generally prevent more than a predetermined relative rotation therebetween. Multiple of the differential drive assemblies of the invention may be provided in a vehicle drive train to provide full-time four wheel drive.
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Harold A. Rothbart, ed., Mechanical Design and Systems Handbook, pp. 38.83 through 38.84 (2nd ed. 1985).
Eugene A. Avallone and Theodore Baumeister, III, eds., Marks' Standard Handbook for Mechanical Engineers, pp 11-10 through 11-11 (9th ed. 1987).
Dennis P. Townsend, ed., Dudley's Gear Handbook, pp. 3.26 through 3.30 (2nd ed. 1991).
Bonck Rodney H.
Estremsky Sherry
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