Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1988-02-17
1990-01-02
Diehl, Dwight G.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74114, 74715, F16H 142, F16H 144
Patent
active
048905100
ABSTRACT:
A center differential for a four-wheel drive vehicle comprises three members, i.e.: an input member rotatably connected for rotations to the output shaft of a transmission; a first output member for transmitting rotation of the input member to a rear wheel output shaft; and a second output member for transmitting rotation of the input member to a front wheel output shaft. Frictional engaging elements are interposed between any two of those three members, and a applying force transforming device for generating a force to engage the frictional engaging elements on the basis of a tangential force which is generated relatively between any of the three members are also provided. Thus, when tangential force generated as a torque is transmitted among the three members, an axial force is generated as a component of the tangential force to increase the engaging force of the frictional engaging elements so that a differential lock is established to automatically adjust the torque distribution ratio between the rear and front wheels to a proper value.
REFERENCES:
patent: 3848518 (1974-11-01), Martin
patent: 4290321 (1981-09-01), Wilson
patent: 4474080 (1984-10-01), Day
patent: 4594913 (1986-06-01), Opitz
patent: 4718302 (1988-01-01), Nussbaumer et al.
patent: 4757727 (1988-07-01), Teraoka et al.
patent: 4771653 (1988-09-01), Teraoka
patent: 4781078 (1988-11-01), Blessing et al.
patent: 4781079 (1988-11-01), Takahashi
Diehl Dwight G.
Toyota Jidosha & Kabushiki Kaisha
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