Back to results
US 9,366,311 B2Granted
Device for damping vibrations and method for assembling the device
AssigneeTrelleborg Automotive Forsheda AB
InventorBengt-Göran Gustavsson
Life of this patent
Estimating the term…
Abstract
Device for damping vibrations of a vibration surface (21) of the frequency tuned resonance damping kind consisting of one or several elastic damping elements (1-4) and a vibration body (5) supported by the damping elements which together are tuned to damp the vibrations of said surface within a selected frequency range. First mutually co-operating form grip organs give a form grip between said damping elements (1-4) and the vibration surface (21), and second mutually co-operating form grip organs give a form grip between the damping elements and the vibration body. The form grip organs in addition have a recess with gripping surfaces (25-30, 33-35) for transferring vibrations.
Claims25
A frequency tuned resonance damper assembly, comprising:
- a plate portion with a hole, the plate portion being attached to a surface, the vibrations of which are to be dampened;
- an elastic element;
- and
- an elastically suspended mass, the mass being elastically suspended from the plate portion by the elastic element and having a holding member, the elastic element having tapered sidewalls, the elastic element including a first gripping member and a second gripping member, the elastic element being inserted into the hole so that
- the first gripping member engages with the hole in the plate portion,
- the second gripping member engages with the holding member of the elastically suspended mass, and
- the elastic element tapers at a location between the plate portion and the elastically suspended mass,
- wherein the elastic element and the elastically suspended mass are tuned so that vibrations of the surface are counteracted though phase-shifted movement of the elastically suspended mass.
5 more elements
A frequency tuned resonance damper assembly, comprising:
- a plate portion with a hole, the plate portion being attached to a surface, the vibrations of which are to be dampened;
- an elastic element;
- and
- ab elastically suspended mass, the mass being elastically suspended from the plate portion by the elastic element and having a holding member, the elastic element having tapered sidewalls, the elastic element including a first gripping member and a second gripping member, the elastic element being inserted into the hole such that the first gripping member engages with the hole in the plate portion and the second gripping member engages with the holding member of the elastically suspended mass, the elastic element having a first end that is open, and the elastic element having a cavity that extends from the first end along a longitudinal axis of the elastic element and the cavity is empty after the first gripping member engages the hole and the second gripping member engages the holding member,
- wherein the elastic element and the elastically suspended mass are tuned so that vibrations of the surface are counteracted through the phase-shifted movement of said elastically suspended mass.
2 more elements
A frequency tuned resonance damper assembly, comprising:
- a plate portion with a hole, the plate portion being attached to a surface, the vibrations of which are to be dampened;
- an elastic member;
- and
- an elastically suspended mass, the mass being elastically suspended from the plate portion by the elastic element and having a holding member the elastic element having tapered sidewalls, the elastic element being inserted into the hole, the elastic element including:
- a first gripping member engaging the hole in the plate portion;
- and
- a second gripping member having a recessed portion, the second gripping member engaging the holding member such that the holding member completely fills the recessed portion,
- wherein the elastic element and the elastically suspended mass are tuned so that vibrations of the surface are counteracted though phase-shifted movement of the elastically suspended mass.
5 more elements
A frequency tuned resonance damper assembly, comprising:
- a plate portion with a hole, the plate portion being attached to a surface, the vibrations of which are to be dampened;
- an elastic element;
- and
- an elastically suspended mass, the mass being elastically suspended from the plate portion by the elastic element and having a holding member, the elastic element being rotationally symmetric along a longitudinal axis and having tapered sidewalls, the elastic element including a first gripping member and a second gripping member, the elastic element being inserted into the hole so that the first gripping member engages with the hole in the plate portion in a tight fit which is continuous along the longitudinal axis, the second gripping member engaging with the holding member of the elastically suspended mass in a tight fit which is continuous along the longitudinal axis, the damping element tapering at a location between the plate portion and the elastically suspended mass, and the damping element having a cavity that extends from a first end along the longitudinal axis of the damping element the cavity, the cavity comprising two cylindrical portions with different diameters,
- wherein the elastic element and the elastically suspended mass are tuned so that vibrations of the surface are counteracted though phase-shifted movement of the elastically suspended mass.
2 more elements
Dependencies are inferred from the claim text.