Patent ID: 6676556
Filing Date: 2004-01-13
Classification: E05B,F16H,Y10T

Abstract:
A motor device for actuating a vehicle door operation device comprising:an output shaft body for outputting a rotational torque of an electric motor; a power transmitting mechanism for transmitting the rotational torque from the electric motor to the output shaft body; connection interrupting means for interrupting a power transmission condition between the electric motor and the output shaft body; the power transmitting mechanism comprising a planetary gear mechanism which includes a rotatable sun gear, a rotatable ring gear, a rotatable carrier and rotatable planetary gears, the ring gear being rotatable on a common rotation axis with the sun gear, the carrier being rotatable on a common rotation axis with the sun gear, the planetary gears being supported by the carrier and being geared with the sun gear and the ring gear, the rotational torque of the electric motor being inputted to an input element formed by a first one of the sun gear, the ring gear and the carrier, and the output shaft body being rotatable as one unit with an output element formed by a second one of the sun gear, the ring gear and the carrier, and the connection interrupting means transmitting the rotational torque of the electric motor to the output shaft body by fixing a fixed element formed by a third one of the sun gear, the ring gear and the carrier, the connection interrupting means interrupting the power transmission condition by releasing the fixed condition of the fixed element so that the fixed element is rotatable; the connection interrupting means comprising: an engagement portion provided on the fixed element; an engagement-disengagement member engageable with the engagement portion for fixing the fixed element against rotation and disengageable from the engagement portion for permitting rotation of the fixed element; and engagement operation means for maintaining the engagement-disengagement member at a position in engagement with the engagement portion and for retracting the engagement-disengagement member from engagement with the engagement portion upon operation of a manual door opening operation to interrupt the power transmission condition between the input shaft body and the output shaft body; and wherein the engagement portion includes a geared engagement portion provided along the entire outer peripheral surface of the fixed element and the engagement-disengagement member is movably supported in a radial direction relative to the rotation axis of the fixed element, the engagement-disengagement member including a tooth-shaped engagement portion arranged in a radial direction relative to the geared engagement portion and being engageable with and disengageable from the geared engagement portion.