Triple clutch and actuator thereof

An actuator which transmits axial force to a first clutch, a second clutch, or a third clutch of a triple clutch comprising:

• an input shaft which receives rotational power of an engine;
• a motor which includes a motor housing, a stator fixedly mounted on an outer circumferential surface of the motor housing, and a rotor rotatably disposed at a radially inner side of the stator;
• a clutch housing which is operatively connected to the rotor, receives rotational power of the motor while rotating together with the rotor, and has therein a clutch space;
• the first clutch which selectively transmits rotational power of the clutch housing to a first output shaft;
• the second clutch which selectively transmits the rotational power of the clutch housing to a second output shaft;
• and the third clutch which selectively transmits rotational power of the input shaft to the clutch housing,
• the actuator comprising:
• a first piston which transmits the axial force to the first clutch;
• a second piston which transmits the axial force to the second clutch;
• and a third piston which transmits the axial force to the third clutch,
• wherein the first piston and the second piston are provided in an actuator housing, and
• the third piston is mounted in a motor housing.

A triple clutch comprising:

• an input shaft which receives rotational power of an engine;
• a motor which includes a motor housing, a stator fixedly mounted on an outer circumferential surface of the motor housing, and a rotor rotatably disposed at a radially inner side of the stator;
• a clutch housing which is operatively connected to the rotor, receives rotational power of the motor while rotating together with the rotor, and has therein a clutch space;
• a first clutch which selectively transmits rotational power of the clutch housing to a first output shaft;
• a second clutch which selectively transmits the rotational power of the clutch housing to a second output shaft;
• and
• a third clutch which selectively transmits rotational power of the input shaft to the clutch housing,
• wherein the first, second, and third clutches include first, second, and third disc packs, respectively, and at least some of the first, second, and third disc packs are disposed in an axial direction within a length of the rotor.