Rotary actuator

Details Rotary actuator Rotary actuator

2005-02-22

2005-02-22

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Electric or magnetic drive or control

C475S153000

Reexamination Certificate

active

06857981

ABSTRACT:
A rotary actuator has a synchronous motor and an internally meshing planetary reduction gear having a first shaft rotated by the synchronous motor, an outer gear mounted to said first shaft with an eccentric part so as to be eccentrically rotatable around said first shaft, an inner gear with which said outer gear meshes internally, and a second shaft connected to said outer gear with a transmission means that only transmits said outer gear rotation on its axis to the second shaft. The synchronous motor and the internally meshing planetary reduction gear are accommodated inside a housing, and the first shaft doubles as a rotor shaft of the synchronous motor. An incremental encoder provided along a rotary shaft of the synchronous motor detects the rotation angle of a rotor of the synchronous motor.

REFERENCES:
patent: 5479058 (1995-12-01), Seidou
patent: 6280359 (2001-08-01), Moskob
patent: 6661139 (2003-12-01), Moskob
patent: 6676554 (2004-01-01), Dal Pra'
patent: 6727614 (2004-04-01), Neubauer et al.
patent: 62-132053 (1987-06-01), None
patent: 5-60217 (1993-03-01), None
patent: 8-226498 (1996-09-01), None
patent: 2001-271925 (2001-10-01), None

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