Torsional vibration damping arrangement for the drive train of a vehicle

Patent metadata

Field	Value
Publication number	US-9765849-B2
Application number	US-201414764943-A
Country	US
Kind code	B2
Filing date	Jan 9, 2014
Priority date	Jan 31, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A torsional vibration damping arrangement for the drivetrain of a vehicle has an input region driven in rotation around an axis of rotation A and an output region. A first torque transmission path and a second torque transmission path parallel thereto proceed from the input region. A coupling arrangement communicates with the output region for superposing the torques guided via the torque transmission paths, and a phase shifter arrangement for the first torque transmission path generates a phase shift of rotational irregularities guided via the first torque transmission path relative to rotational irregularities guided via the second torque transmission path. The output region includes the planet gear carrier at which a planet gear is rotatably supported, and the planet gear carrier is connected to the output region to be fixed with respect to rotation relative to it.

First claim

The invention claimed is:

1. A torsional vibration damping arrangement for a drivetrain of a vehicle, comprising:
an input region configured to be driven in rotation around an axis of rotation;
an output region,
a first torque transmission path that proceeds from the input region;
a second torque transmission path parallel to the first torque transmission path that proceeds from the input region; and
a coupling arrangement communicating with the output region and configured to superpose respective torques guided via the first torque transmission path and the second torque transmission path, wherein the coupling arrangement comprises:
a planet gear carrier that is connected to the output region to be fixed with respect to rotation relative to the output region;
a planetary gear set having the planet gear carrier;
a phase shifter arrangement for the first torque transmission path having an input element and an output element, the phase shifter arrangement configured to generate a phase shift of rotational irregularities guided via the first torque transmission path relative to rotational irregularities guided via the second torque transmission path;
a superposition unit;
a first input part is operatively connected to the output element of the phase shifter arrangement and to the superposition unit;
a second input part is operatively connected to the input region and to the superposition unit; and
an output part that forms the output region,
wherein the superposition unit is operatively connected to both the first input part, second input part, and to the output part,
wherein the output region comprises the planet gear carrier at which a planet gear is rotatably supported,
wherein the planet gear comprises at least a first toothing with a first diameter and a second toothing with a second diameter, wherein the first and second toothings are arranged to be axially staggered, and wherein a drive ring gear meshes with the first toothing of the planet gear, and a drive sun gear meshes with the second toothing of the planet gear,
wherein the phase shifter arrangement comprises a vibration system with a primary mass and an intermediate element that is rotatable with respect to the primary mass around the axis of rotation against an action of a spring arrangement, wherein the intermediate element forms the output element of the phase shifter arrangement,
wherein the planetary gear set has the drive sun gear and the drive ring gear,
wherein the drive sun gear is connected to the primary mass to be fixed with respect to rotation relative to it, and the drive ring gear is connected to the intermediate element to be fixed with respect to rotation relative to it, and
wherein the drive sun gear and the drive ring gear mesh with the planet gear.

2. Torsional vibration damping arrangement according to claim 1 , further comprising an additional mass is positioned at an intermediate element.

3. Torsional vibration damping arrangement according to claim 1 , wherein the phase shifter arrangement and the coupling arrangement are at least partially received in a wet space that is at least partially filled with a fluid.

4. A torsional vibration damping arrangement for a drivetrain of a vehicle, comprising:
an input region configured to be driven in rotation around an axis of rotation;
an output region,
a first torque transmission path that proceeds from the input region;
a second torque transmission path parallel to the first torque transmission path that proceeds from the input region; and
a coupling arrangement communicating with the output region and configured to superpose respective torques guided via the first torque transmission path and the second torque transmission path, wherein the coupling arrangement comprises:
a planet gear carrier that is connected to the output region to be fixed with respect to rotation relative to the output region;
a planetary gear set having the planet gear carrier; and
a phase shifter arrangement for the first torque transmission path having an input element and an output element, the phase shifter arrangement configured to generate a phase shift of rotational irregularities guided via the first torque transmission path relative to rotational irregularities guided via the second torque transmission path,
wherein the output region comprises the planet gear carrier at which a planet gear is rotatably supported,
wherein the planet gear comprises at least a first toothing with a first diameter and a second toothing with a second diameter, wherein the first and second toothings are arranged to be axially staggered, and wherein a drive ring gear meshes with the first toothing of the planet gear, and a drive sun gear meshes with the second toothing of the planet gear,
wherein the first toothing diameter and second toothing diameter are different.

5. The torsional vibration damping arrangement according to claim 4 , wherein the first toothing comprises at least a first toothing segment and the second toothing comprise a second toothing segment, wherein the first toothing segment and second toothing segment at least partially axially overlap.

6. The torsional vibration damping arrangement according to claim 5 , wherein the first toothing segment and second toothing segment each have a different toothing diameter.

7. The torsional vibration damping arrangement according to claim 6 , wherein the drive ring gear meshes with the first toothing segment of the planet gear and the drive sun gear meshes with the second toothing segment of the planet gear.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Dieckhoff Tobias

Classifications

• F16H2045/0268

  the damper comprising a gearing · CPC title

• F16F15/1478 Primary

  with a planetary gear system · CPC title

• F16H2045/0221

  with damping means · CPC title

• F16H2045/007

  comprising a damper between turbine of the fluid gearing and the mechanical gearing unit · CPC title

• F16H45/02

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