Torque converter device, in particular for a drive train of a motor vehicle

Patent metadata

Field	Value
Publication number	US-11035449-B2
Application number	US-201716466768-A
Country	US
Kind code	B2
Filing date	Sep 18, 2017
Priority date	Dec 9, 2016
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A torque converter device for a drivetrain of a motor vehicle includes a converter cover having a cover shell and a hub rigidly connected to the cover shell. The torque converter device also includes at least one multidisk clutch, which includes at least one inner disk-centering member. The hub integrally forms the inner disk-centering member of the multidisk clutch.

First claim

The invention claimed is:

1. A torque converter device for a drivetrain of a motor vehicle, comprising:
a converter cover having a cover shell and a hub rigidly connected to the cover shell; and
at least one multidisk clutch, wherein an inner disk-centering member of the multidisk clutch is integrally formed by the hub,
wherein the hub is connected to the cover shell by a weld seam, wherein the weld seam is spaced axially apart from disks of the at least one multidisk clutch along an axis of rotation of the disks, and wherein a radial distance of the weld seam from the axis of rotation of the disks falls, in relation to the axis of rotation of the disks, between a minimum radial portion of the discs and a maximum radial portion of the discs.

2. The torque converter device of claim 1 , wherein the hub has at least one cooling-oil duct integrally formed by the hub and configured to supply cooling oil to the at least one multidisk clutch for cooling the at least one multidisk clutch.

3. The torque converter device of claim 2 , wherein the hub has a stepped contour integrally formed by the hub, and wherein the inner disk-centering member is formed on a radially inner step that is integrally formed by the hub.

4. The torque converter device of claim 3 , wherein the hub has a radial mounting point configured for mounting a transmission input shaft, and wherein the mounting point is integrally formed by the hub.

5. The torque converter device of claim 4 , wherein the cooling-oil duct leads from the radial mounting point to the radially inner step of the hub.

6. The torque converter device of claim 3 , wherein the at least one multidisk clutch has at least one actuating piston configured to actuate the multidisk clutch, and wherein the at least one actuating piston is arranged on a radially outer step of the hub, which step is integrally formed by the hub.

7. The torque converter device of claim 6 , wherein the hub has a pressure-oil duct configured to actuate the actuating piston, and wherein the pressure-oil duct is integrally formed by the hub and leads to the radially outer step of the hub.

8. The torque converter device of claim 1 , wherein the at least one multidisk clutch is a converter lockup clutch.

9. The torque converter device of claim 1 , further comprising:
an electric machine arranged at least partly radially outside the converter cover and having at least one rotor,
wherein the hub has a connection region integrally formed by the hub configured to connect the rotor of the electric machine for conjoint rotation and for radial centering the rotor.

10. The torque converter device of claim 9 , wherein the cover shell has at least one step running in a circumferential direction and forming a radially supporting receiving region for the rotor of the electric machine.

Assignees

• Daimler Ag

Inventors

• Velthaus Jan
• Ziegler Bernhard
• Schuster Tobias
• Rube Lukas
• Heukelbach Kai
• Koppitz Bernd
• Zehren Felix

Classifications

• F16H45/02 Primary

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title

• F16H2045/0215

  Details of oil circulation · CPC title

• F16H2045/0284

  Multiple disk type lock-up clutch · CPC title

• B60K6/485

  Motor-assist type · CPC title

• F16H41/24 Primary

  Details · CPC title