Hybrid driving module

1 . A hybrid driving module comprising:

a rotor hub configured to support a rotor, connected to an engine, and configured to receive power of the engine;

a first power transmission route configured to connect the rotor hub and an output member; and

a second power transmission route provided in parallel with the first power transmission route and configured to connect the rotor hub and the output member, the second power transmission route not being overlapped with the first power transmission route,

wherein the rotor hub has a radial extension portion, and an axial extension portion connected to an outer periphery of the radial extension portion,

wherein a damper is provided in the second power transmission route, and

wherein at least a part of the damper is disposed radially inside the axial extension portion,

wherein a lock-up clutch, which controls connection and disconnection between the rotor hub and the output member, is provided in the second power transmission route,

wherein the lock-up clutch has a lock-up piston configured to be movable in an axial direction,

wherein the lock-up piston comprises:

an inner radial extension portion extending in a radial direction while facing the radial extension portion of the rotor hub; and

an axis-extension portion extending in the axial direction and having a front end connected to a centrifugal side end of the inner radial extension portion,

wherein at least a part of the axis-extension portion is disposed radially inside the axial extension portion of the rotor hub, and

wherein the damper is spline-coupled to the axis-extension portion so that a rotation thereof is restricted.

2 . The hybrid driving module of claim 1 , wherein the rotor hub and the engine are connected through an engine clutch.

3 . The hybrid driving module of claim 2 , wherein the engine clutch is a one-way clutch.

4 . The hybrid driving module of claim 2 , wherein the damper is disposed rearward of the radial extension portion of the rotor hub, and

wherein the engine clutch is provided forward of the radial extension portion of the rotor hub and disposed radially inside the axial extension portion of the rotor hub.

5 . The hybrid driving module of claim 1 , wherein a torque converter is provided in the first power transmission route.

6 . The hybrid driving module of claim 1 , wherein the lock-up piston further comprises an outer radial extension portion connected to a rear end of the axis-extension portion and extending in the radial direction, and

wherein a friction portion, which connects and disconnects the rotor hub and the lock- up piston, is provided at a centrifugal side of the outer radial extension portion.

7 . The hybrid driving module of claim 6 , wherein the friction portion is a single-facing portion.

8 . The hybrid driving module of claim 6 , wherein the rotor hub is connected to a cover configured to accommodate the first power transmission route and the second power transmission route, and

wherein the friction portion comes into contact with or separates from the cover.

9 . The hybrid driving module of claim 1 , wherein the lock-up clutch which controls connection and disconnection between the rotor hub and the output member, is provided in the second power transmission route,

wherein the damper comprises:

a damper spring;

a cover plate connected to the lock-up clutch so that a rotation thereof is restricted, the cover plate being connected to the damper spring so that a rotation thereof is restricted; and

a driven plate connected to the cover plate through the damper spring so that a rotation thereof is restricted, the driven plate being connected to the output member so that a rotation thereof is restricted, and

wherein the cover plate is spline-coupled to the lock-up clutch.

10 . A hybrid driving module comprising:

a rotor hub configured to support a rotor, connected to an engine, and configured to receive power of the engine;

a first power transmission route configured to connect the rotor hub and an output member; and

a second power transmission route provided in parallel with the first power transmission route and configured to connect the rotor hub and the output member, the second power transmission route not being overlapped with the first power transmission route,

wherein the rotor hub has a radial extension portion, and an axial extension portion connected to an outer periphery of the radial extension portion,

wherein a lock-up clutch, which controls connection and disconnection between the rotor hub and the output member, and a damper between the lock-up clutch and the output member are provided in the second power transmission route,

wherein at least a part of the lock-up clutch is disposed radially inside the axial extension portion,

wherein the lock-up clutch has a lock-up piston configured to be movable in an axial direction,

wherein at least a part of the lock-up piston is disposed radially inside the axial extension portion,

wherein the lock-up piston comprises:

an inner radial extension portion extending in a radial direction while facing the radial extension portion of the rotor hub; and

an axis-extension portion extending in the axial direction and having a front end connected to a centrifugal side end of the inner radial extension portion,

wherein at least a part of the axis-extension portion of the lock-up piston is disposed radially inside the axial extension portion of the rotor hub,

wherein the damper is disposed radially inside the axis-extension portion of the lock- up piston, and

wherein the damper is spline-coupled to the axis-extension portion so that a rotation thereof is restricted.

11 . The hybrid driving module of claim 10 , wherein at least a part of the inner radial extension portion is disposed radially inside the axial extension portion of the rotor hub.

12 . The hybrid driving module of claim 10 , wherein the damper comprises:

a damper spring;

a cover plate connected to the lock-up clutch so that a rotation thereof is restricted, the cover plate being connected to the damper spring so that a rotation thereof is restricted; and

a driven plate connected to the cover plate through the damper spring so that a rotation thereof is restricted, the driven plate being connected to the output member so that a rotation thereof is restricted, and

wherein the cover plate is spline-coupled to the axis-extension portion.

13 . The hybrid driving module of claim 10 , wherein the rotor hub and the engine are connected through an engine clutch,

wherein the inner radial extension portion and the axis-extension portion of the lock-up piston are disposed rearward of the radial extension portion of the rotor hub, and

wherein the engine clutch is provided forward of the radial extension portion of the rotor hub and disposed radially inside the axial extension portion of the rotor hub.

14 . A hybrid driving module comprising:

a rotor hub configured to support a rotor, connected to an engine, and configured to receive power of the engine;

a first power transmission route configured to connect the rotor hub and an output member; and

a second power transmission route provided in parallel with the first power transmission route and configured to connect the rotor hub and the output member,

wherein the rotor hub has a radial extension portion, and an axial extension portion connected to an outer periphery of the radial extension portion,

wherein a lock-up clutch, which controls connection and disconnection between the rotor hub and the output member, is provided in the second power transmission route,

wherein at least a part of the lock-up clutch is disposed radially inside the axial extension portion,

wherein the lock-up clutch has a lock-up piston configured to be movable in an axial direction,

wherein at least a part of the lock-up piston is disposed radially inside the axial extension portion,

wherein the lock-up piston comprises:

an inner radial extension portion extending in a radial direction while facing the radial extension portion of the rotor hub; and

an axis-extension portion extending in the axial direction and having a front end connected to a centrifugal side end of the inner radial extension portion,

wherein at least a part of the axis-extension portion of the lock-up piston is disposed radially inside the axial extension portion of the rotor hub,

wherein a damper is provided between the lock-up clutch and the output member,

wherein the damper is disposed radially inside the axis-extension portion of the lock- up piston,

wherein the damper comprises:

a damper spring;

a cover plate connected to the lock-up clutch so that a rotation thereof is restricted, the cover plate being connected to the damper spring so that a rotation thereof is restricted; and

a driven plate connected to the cover plate through the damper spring so that a rotation thereof is restricted, the driven plate being connected to the output member so that a rotation thereof is restricted, and

wherein the cover plate is spline-coupled to the axis-extension portion.

15 . The hybrid driving module of claim 14 , wherein at least a part of the inner radial extension portion is disposed radially inside the axial extension portion of the rotor hub.

16 . The hybrid driving module of claim 14 , wherein the rotor hub and the engine are connected through an engine clutch,

wherein the inner radial extension portion and the axis-extension portion of the lock- up piston are disposed rearward of the radial extension portion of the rotor hub, and

wherein the engine clutch is provided forward of the radial extension portion of the rotor hub and disposed radially inside the axial extension portion of the rotor hub.