Drive device

Patent metadata

Field	Value
Publication number	US-11433755-B2
Application number	US-202117397466-A
Country	US
Kind code	B2
Filing date	Aug 9, 2021
Priority date	Sep 8, 2020
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A drive device includes a fluid coupling and a rotary electrical machine. The fluid coupling is configured such that a torque is inputted thereto from a first side in an axial direction and is outputted therefrom to a second side in the axial direction. The rotary electrical machine includes a first stator and a rotor. The first stator is disposed in a non-rotatable manner. The rotor is disposed to be rotated about a rotational axis of the fluid coupling. The rotary electrical machine is disposed on the second side with respect to the fluid coupling in the axial direction. The rotary electrical machine overlaps the fluid coupling in an axial view.

First claim

What is claimed is:

1. A drive device comprising:
a fluid coupling configured such that a torque is inputted thereto from a first side in an axial direction and is outputted therefrom to a second side in the axial direction; and
a rotary electrical machine including a first stator and a rotor, the first stator disposed in a non-rotatable manner, the rotor disposed to be rotated about a rotational axis of the fluid coupling,
the rotary electrical machine disposed on the second side with respect to the fluid coupling in the axial direction, the rotary electrical machine overlapping the fluid coupling in an axial view.

2. The drive device according to claim 1 , wherein the rotary electrical machine includes a field coil.

3. The drive device according to claim 1 , wherein the rotary electrical machine is disposed adjacent to a torus of the fluid coupling in the axial direction.

4. The drive device according to claim 1 , wherein the rotor is attached to an outer shell of the fluid coupling.

5. The drive device according to claim 1 , wherein the rotor is attached to an outer shell of the fluid coupling in a position located radially inside a center of a torus of the fluid coupling.

6. The drive device according to claim 1 , wherein the rotor is attached to an outer shell of the fluid coupling in a position located radially outside a center of a torus of the fluid coupling.

7. The drive device according to claim 1 , wherein
the fluid coupling includes a second stator and a one-way clutch, the one-way clutch attached to an inner peripheral end of the second stator, and
the one-way clutch is disposed on the second side with respect to a center of a torus of the fluid coupling in the axial direction.

8. The drive device according to claim 1 , further comprising:
an inhibiting member having an annular shape, wherein
an outer shell of the fluid coupling includes an attachment surface facing radially outward, and
the inhibiting member is attached at an inner peripheral surface thereof to the attachment surface.

Assignees

• Exedy Corp

Inventors

• Kitada Kenji
• Kawahara Yuki
• Wada Tomohiro
• Shimada Takuma
• Takada Yukiyoshi

Classifications

• F16H2045/0278

  comprising only two co-acting friction surfaces · CPC title

• F16H2045/021

  three chamber system, i.e. comprising a separated, closed chamber specially adapted for actuating a lock-up clutch · CPC title

• F16H2045/0205

  two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch · CPC title

• B60K6/40 Primary

  characterised by the assembly or relative disposition of components · CPC title

• B60Y2400/426

  Hydrodynamic couplings, e.g. torque converters · CPC title