Tuned mass damper

Patent metadata

Field	Value
Publication number	US-9726254-B2
Application number	US-201414904390-A
Country	US
Kind code	B2
Filing date	Jun 12, 2014
Priority date	Jul 9, 2013
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A tuned mass vibration damper included at least one damper mass and at least one guide component part to movably guide the at least one damper mass. The damper mass has a retaining component part which is at least partially arranged in a receiving recess of the damper mass. The retaining component part has at least one retaining structure and the at least one guide component part has at least one mating retaining structure to limit a movement of the at least one damper mass relative to the at least one guide component part in that the retaining structure and the mating retaining structure come in contact with one another. The at least one damper mass drives the retaining component part during a movement of the damper mass along a circumferential direction and to allow a relative movement of the retaining component part ( 350 ) with respect to the damper mass which results in a change in a radial distance of the retaining structure from the axis of rotation. The at least one damper mass and the at least one guide component part prevent the retaining structure and mating retaining structure from coming in contact with one another when an upper threshold speed is exceeded.

First claim

The invention claimed is:

1. A tuned mass vibration damper for a drivetrain of a motor vehicle configured to damp a vibration component of a rotational movement around an axis of rotation comprising:
at least one damper mass configured to execute an oscillation depending on the rotational movement to damp the vibration component; and
at least one guide component part configured to movably guide the at least one damper mass to enable the oscillation thereof;
wherein the damper mass comprises:
a retaining component part that is at least partially arranged in a receiving recess of the damper mass, the retaining component part having at least one retaining structure and the at least one guide component part having at least one mating retaining structure configured and arranged to limit a movement of the at least one damper mass relative to the at least one guide component part such that the retaining structure comes in contact with the mating retaining structure;

wherein the at least one damper mass is configured to drive the retaining component part during a movement of the damper mass along a circumferential direction and to allow a relative movement of the retaining component part with respect to the damper mass which results in a change in a radial distance of the retaining structure from the axis of rotation; and
wherein the at least one damper mass and the at least one guide component part are configured to prevent the retaining structure and the mating retaining structure from coming in contact with one another when an upper threshold speed is exceeded,
wherein the at least one damper mass is guided relative to the at least one guide component part by at least one rolling body that guided on a running path of the at least one guide component part and of the at least one damper mass,
wherein the retaining structure and the mating retaining structure or the retaining structure and at least one guide component part are configured and arranged to prevent the at least one rolling body from striking an end of a running path of the respective rolling body.

2. The tuned mass vibration damper according to claim 1 , wherein the at least one damper mass and the at least one guide component part are configured to allow the retaining structure and the mating retaining structure to make contact when a speed falls below the upper threshold speed or a lower threshold speed, the lower threshold speed differing from the upper threshold speed.

3. The tuned mass vibration damper according to claim 2 , comprising at least two damper masses arranged in an offset manner in the circumferential direction,
wherein the retaining structure and the mating retaining structure are configured and arranged such that a contact between two damper masses, which are adjacent along the circumferential direction, is prevented by the retaining structure and mating retaining structure coming in contact with one another when a speed falls below the upper threshold speed or lower threshold speed.

4. The tuned mass vibration damper according to claim 1 ,
wherein the retaining structure comprises a retaining projection, and the mating retaining structure comprises a retaining recess, or
wherein the retaining structure comprises a retaining recess and the mating structure comprises a retaining projection.

5. The tuned mass vibration damper according to claim 4 , wherein the retaining recess has a first stop region along a circumferential direction along a predetermined rotational direction and a second stop region opposite the first stop region along the circumferential direction, wherein the first stop region and second stop region are configured asymmetrically.

6. A tuned mass vibration damper, for a drivetrain of a motor vehicle configured to damp a vibration component of a rotational movement around an axis of rotation configured to damp a rotational movement with the predetermined rotational direction around the axis of rotation, comprising:
at least one damper mass configured to execute an oscillation depending on the rotational movement to damp the vibration component; and
at least one guide component part configured to movably guide the at least one damper mass to enable the oscillation thereof;
wherein the damper mass comprises:
a retaining component part that is at least partially arranged in a receiving recess of the damper mass, the retaining component part having at least one retaining structure and the at least one guide component part having at least one mating retaining structure configured and arranged to limit a movement of the at least one damper mass relative to the at least one guide component part such that the retaining structure comes in contact with the mating retaining structure;

wherein the at least one damper mass is configured to drive the retaining component part during a movement of the damper mass along a circumferential direction and to allow a relative movement of the retaining component part with respect to the damper mass which results in a change in a radial distance of the retaining structure from the axis of rotation; and
wherein the at least one damper mass and the at least one guide component part are configured to prevent the retaining structure and the mating retaining structure from coming in contact with one another when an upper threshold speed is exceeded,
wherein the retaining structure comprises a retaining projection, and the mating retaining structure comprises a retaining recess, or
wherein the retaining structure comprises a retaining recess and the mating structure comprises a retaining projection,
wherein the retaining recess has a first stop region along a circumferential direction along a predetermined rotational direction and a second stop region opposite the first stop region along the circumferential direction, wherein the first stop region and second stop region are configured asymmetrically,
wherein the first stop region is arranged with respect to the second stop region and the predetermined rotational direction such that the retaining projection can come in contact with the first stop region during an acceleration of the rotational movement due to an inertia of the at least one damper mass relative to the at least one guide component part, and that during a retardation of the rotational movement due to the inertia of the at least one damper mass, the retaining projection can come in contact with the second stop region, wherein a contour of the first stop region has a greater angle than a contour of the second stop region with respect to a radial direction.

7. The tuned mass vibration damper according to claim 6 , wherein the contour of the second stop region has an undercut with respect to the radial direction.

8. A tuned mass vibration damper for a drivetrain of a motor vehicle configured to damp a vibration component of a rotational movement around an axis of rotation comprising:
at least one damper mass configured to execute an oscillation depending on the rotational movement to damp the vibration component; and
at least one guide component part configured to movably guide the at least one damper mass to enable the oscillation thereof;
wherein the damper mass comprises:
a retaining component part that is at least partially arranged in a receiving recess of the damper mass, the retaining component part having at least one retaining structure and the at least one guide component part having at least one mating retaining structure configured and arranged to limit a movement of the at least one damper mass relative to the at least one guide component part such that the retaining structure comes in contact with the mating retaining structure;

wherein the at least one damper mass is configured to drive the retaining c

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Siemens Kyrill
• Wirachowski Michael

Classifications

• F16F15/145 Primary

  Masses mounted with play with respect to driving means thus enabling free movement over a limited range · CPC title

• F16F7/10

  using inertia effect (F16F13/108, F16F13/22, F16F15/10, F16F15/22 take precedence; stabilising vehicle bodies by means of movable masses B62D37/04; protection of buildings against vibrations or shocks by mass dampers E04H9/0215; arrangements or devices for damping mechanical oscillations of power lines H02G7/14) · CPC title