Vibration damper made up of spoke spring absorbers
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJean Sieffert, Urban Panther, Christopher Müller, Joseph Gissler
Life of this patent
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Abstract
A vibration damper with at least two absorbers, each having at least one spoke spring, enables efficient damping of the frequency response of a crankshaft. The absorbers preferably have different natural frequencies that are adapted to the frequency response of the crankshaft. The absorbers exhibit a frequency response, which is not or only insignificantly dependent on aging of the spoke springs and on the ambient temperature. The corresponding vibration dampers can be easily designed and mounted.
Claims16
A vibration damper for damping torsional vibrations, which is rotatable about an axis of rotation, the vibration damper comprising:
- at least two absorbers, each said absorber having a natural frequency and at least one spoke spring having the natural frequency of the absorber, each of the at least one spoke spring including;
- a circular ring-shaped outer element radially on an outside;
- a connecting element configured to connect to a shaft radially on an inside;
- and
- a plurality of spokes extending in a radial direction between the circular ring-shaped outer element and the connecting element and the spokes are elastic, the plurality of spokes of each of the at least two absorbers being identical in number;
- and
- wherein the at least two absorbers have different natural frequencies from one another, and wherein the spoke springs are arranged one behind another in a direction of the axis of rotation, and the spoke springs adjacent to one another in the direction of the axis of rotation are in contact.
A vibration damper for damping torsional vibrations, the vibration damper comprising:
- a first absorber and a second absorber, each of the first absorber and the second absorber having a respective first and second natural frequency, with the first natural frequency being different than the second natural frequency, each of the first absorber and the second absorber comprising a spoke spring including:
- a ring-shaped outer element radially on an outside;
- a connecting element radially on an inside;
- and
- a plurality of spokes extending in a radial direction between the ring-shaped outer element and the connecting element and the spokes are elastic;
- wherein the spoke springs are arranged one behind another in a direction of an axis of rotation, and the spoke springs adjacent to one another in the direction of the axis of rotation are in contact.
A vibration damper for damping a vibration behavior of a crankshaft system having a crankshaft natural frequency, the vibration damper comprising:
- a first absorber and a second absorber, each of the first absorber and the second absorber having a respective first and second natural frequency, with the first natural frequency being different than the second natural frequency, each of the first absorber and the second absorber comprising a spoke spring including:
- a ring-shaped outer element radially on an outside;
- a connecting element radially on an inside;
- and
- a plurality of spokes extending in a radial direction between the ring-shaped outer element and the connecting element and the spokes are elastic;
- wherein the first natural frequency deviates by at most 10 Hz from the crankshaft natural frequency, and the second natural frequency deviates by at most 20 Hz from a frequency of a maximum of a frequency response of the crankshaft system damped by the first absorber.
Dependencies are inferred from the claim text.