In-wheel motor driving unit

Details In-wheel motor driving unit In-wheel motor driving unit

2010-06-30

2011-10-11

Young, Edwin A (Department: 3655)

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Circumferentially spaced connector pins

Reexamination Certificate

active

08033943

ABSTRACT:
A rotary shaft is provided so as to be coaxial with an inner member which comprises a hub ring and a bearing inner ring. External gears are rotatably provided around eccentric portions formed on the rotary shaft. The external gears mesh with internal teeth formed on the inner periphery of a casing. When the rotary shaft rotates, the external gears mesh with the internal teeth one after another, so that their centers rotate about the axis of the rotary shaft. When the rotary shaft rotates once, the external gears rotate about their own axes by an amount corresponding to the difference in number between the external teeth and the internal teeth. The rotation of the external gears about their axes is transmitted through a torque transmission to the inner member, thereby rotating the inner member at a reduced speed.

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