Torque transmitting device

Patent metadata

Field	Value
Publication number	US-12018730-B2
Application number	US-202017767679-A
Country	US
Kind code	B2
Filing date	Aug 20, 2020
Priority date	Oct 10, 2019
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A torque transmitting device for a drivetrain for transmitting a drive torque to an output element. The device having: an electric motor with a conversion unit, which comprises a stator and a rotor that is rotatable relative to the stator, for converting electrical energy into mechanical energy; and a torsional vibration damper with a damper mass received on a damper mass support such that the damper mass can be deflected to a limited extent against the action of a restoring force, the damper mass being arranged so as to overlap radially with the conversion unit.

First claim

The invention claimed is:

1. A torque transmission device for a drivetrain for transmitting a drive torque to an output element, the torque transmission device comprising:
an electric motor with a conversion unit, which comprises a stator and a rotor that is rotatable relative to the stator, for converting electrical energy into mechanical energy, and
a torsional vibration damper with a damper mass received on a damper mass support such that the damper mass can be deflected to a limited extent against an action of a restoring force,
wherein the damper mass is arranged so as to overlap radially with the conversion unit;
wherein a center of gravity of the damper mass is arranged radially outside of a radial inner circumference of the conversion unit.

2. The torque transmission device according to claim 1 , wherein the damper mass is arranged axially at a distance from the conversion unit.

3. The torque transmission device according to claim 1 , wherein a radial inner circumference of the damper mass is arranged radially inside or radially outside of a radial inner circumference of the conversion unit.

4. The torque transmission device according to claim 1 , wherein a radial outer circumference of the damper mass is arranged radially inside or radially outside of a radial outer circumference of the conversion unit.

5. The torque transmission device according to claim 1 , wherein a radial outer circumference of the damper mass is arranged radially outside of a radial inner circumference of the conversion unit.

6. The torque transmission device according to claim 1 , wherein a center of gravity of the damper mass is arranged radially inside of a radial outer circumference of the conversion unit.

7. The torque transmission device according to claim 1 , wherein the torsional vibration damper is a centrifugal pendulum and the damper mass is a pendulum mass which is attached to the damper mass support configured as a pendulum mass support and can be deflected to a limited extent along a pendulum path.

8. The torque transmission device according to claim 1 , wherein the torsional vibration damper is arranged within a torque converter effectively arranged between the electric motor and the output element.

9. The torque transmission device according to claim 8 , wherein a converter lock-up clutch and/or a further torsional vibration damper is arranged within the torque converter and radially inside the conversion unit.

10. A torque transmission device for a drivetrain for transmitting a drive torque to an output element, the torque transmission device comprising:
an electric motor with a conversion unit, which comprises a stator and a rotor that is rotatable relative to the stator, for converting electrical energy into mechanical energy, and
a torsional vibration damper with a damper mass received on a damper mass support such that the damper mass can be deflected to a limited extent against an action of a restoring force,
wherein the damper mass is arranged so as to overlap radially with the conversion unit;
wherein a center of gravity of the damper mass is arranged radially inside of a radial outer circumference of the conversion unit.

11. The torque transmission device according to claim 10 , wherein the damper mass is arranged axially at a distance from the conversion unit.

12. The torque transmission device according to claim 10 , wherein a radial inner circumference of the damper mass is arranged radially inside or radially outside of a radial inner circumference of the conversion unit.

13. The torque transmission device according to claim 10 , wherein a radial outer circumference of the damper mass is arranged radially inside or radially outside of a radial outer circumference of the conversion unit.

14. The torque transmission device according to claim 10 , wherein a radial outer circumference of the damper mass is arranged radially outside of a radial inner circumference of the conversion unit.

15. The torque transmission device according to claim 10 , wherein the torsional vibration damper is a centrifugal pendulum and the damper mass is a pendulum mass which is attached to the damper mass support configured as a pendulum mass support and can be deflected to a limited extent along a pendulum path.

16. The torque transmission device according to claim 10 , wherein the torsional vibration damper is arranged within a torque converter effectively arranged between the electric motor and the output element.

17. The torque transmission device according to claim 16 , wherein at least one of a converter lock-up clutch and a further torsional vibration damper is arranged within the torque converter and radially inside the conversion unit.

18. A torque transmission device for a drivetrain for transmitting a drive torque to an output element, the torque transmission device comprising:
an input shaft;
a torque converter including a housing rotationally fixed to the input shaft;
an electric motor with a conversion unit, which comprises a stator and a rotor that is rotatable relative to the stator, for converting electrical energy into mechanical energy,
a rotor carrier rotationally fixed to the input shaft and supporting the rotor, the rotor carrier and the electric motor each being disposed external to the torque converter; and
a torsional vibration damper disposed within the torque converter, the torsional vibration damper including a damper mass received on a damper mass support such that the damper mass can be deflected to a limited extent against an action of a restoring force,
wherein the damper mass is arranged so as to overlap radially with the conversion unit.

19. The torque transmission device according to claim 18 , further comprising a separating clutch connected to the input shaft, the rotor carrier being effectively arranged axially between the separating clutch and the torque converter.

20. The torque transmission device according to claim 18 , wherein a center of gravity of the damper mass is arranged radially between a radial outer circumference of the conversion unit and a radial inner circumference of the conversion unit.

Assignees

• Schaeffler Technologies Ag

Inventors

• Vögtle Benjamin
• Maienschein Stephan
• Wahl Peter
• Echle Daniel
• Schnädelbach David
• Krause Thorsten

Classifications

• F16F2232/02

  Rotary · CPC title

• F16D2300/22

  Vibration damping · CPC title

• F16D3/12

  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D3/80) · CPC title

• F16F15/12353

  Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations · CPC title

• Y02T10/62

  Hybrid vehicles · CPC title