| CPC F16H 3/093 (2013.01) [F16D 21/04 (2013.01); F16H 3/085 (2013.01); F16H 57/021 (2013.01); B60L 2220/52 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01); F16H 2200/0021 (2013.01)] | 6 Claims |
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1. An electric driving apparatus comprising:
a housing;
an electric machine comprising a motor shaft rotatably supported by the housing;
a first speed reduction portion comprising a first speed shifting shaft capable of being rotationally driven by the motor shaft and configured to shift and transmit a rotational driving force of the motor shaft at a predetermined first speed shifting ratio;
a second speed reduction portion comprising a second speed shifting shaft capable of being rotationally driven by the motor shaft and configured to shift and transmit the rotational driving force of the motor shaft at a predetermined second speed shifting ratio; and
a double clutch unit configured to receive the rotational driving force of the first speed shifting shaft or the second speed shifting shaft and is configured to selectively rotationally drive at least one of a first output shaft and a second output shaft by the transmitted rotational driving force,
wherein the motor shaft is rotatably supported by the housing so as to be rotatably about a first rotation axis, wherein the first speed shifting shaft is rotatably supported by the housing so as to be rotatable about a second rotation axis parallel to the first rotation axis, and wherein the second speed shifting shaft is rotatably supported by the housing to be rotatable about a third rotation axis parallel to the second rotation axis,
wherein the first speed reduction portion further comprises:
a first input gear engaged with a driving gear that is rotationally constrained to the motor shaft;
a first clutch unit operative to selectively effect a rotationally constrained connection between the first input gear and the first speed shifting shaft; and
a first output gear connected to the first speed shifting shaft to be rotationally constrained,
wherein the second speed rduction portion further comprises:
a second input gear engaged with the driving gear; a second clutch unit operative to selectively effect a rotationally constrained connection between the second input gear and the second speed shifting shaft; and
a second output gear connected to the second speed shifting shaft to be rotationally constrained, and
wherein the double clutch unit comprises:
a clutch housing that can be rotationally driven by one of the first speed shifting shaft and the second speed shifting shaft;
a first clutch hub coupled to the first output shaft to rotationally drive the first output shaft;
a second clutch hub coupled to the second output shaft to rotationally drive the second output shaft;
a first clutch plate package selectively connecting the clutch housing and the first clutch hub to be rotationally constrained; and
a second clutch plate package selectively connecting the clutch housing and the second clutch hub to be rotationally constrained, and
wherein the clutch housing is provided with a first annular gear and a second annular gear that are disposed adjacently along the first rotation axis and are engaged with the first output gear and the second output gear, respectively.
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