Uncoupling element for shielding against structure-borne sound
AssigneeBOA Balg-und Kompensatoren-Technologie GmbH
InventorHolger Hebisch
Life of this patent
Estimating the term…
Abstract
An uncoupling element shields against structure-borne sound, especially for the exhaust pipe of internal combustion engines in motor vehicles. The uncoupling element includes a bellows (2) made of metal and a ring-shaped damping element (4) made of a lightweight composite. The damping element has particle-filled hollow steel spheres inserted at least one end of the bellows between the bellows end and a continuing pipeline.
Claims16
An uncoupling element for shielding against structure-borne sound for an exhaust pipe of internal combustion engines in motor vehicles, the uncoupling element comprising:
- a bellows made of metal;
- and
- a ring-shaped damping element made of a lightweight composite with particle-filled hollow steel spheres, the damping element being inserted at at least one end of the bellows between the bellows end and a continuing pipeline.
An uncoupling element for shielding against structure-borne sound, the uncoupling element comprising:
- a plurality of hollow steel spheres;
- particles partially filing each of the spheres;
- a matrix, the hollow spheres being embedded in the matrix to form a ring-shaped damping element, wherein the hollow steel spheres form a sandwich structure with hollow steel spheres cast in the matrix comprising metal or a polymer;
- a bellows made of metal connected to the ring-shaped damping element;
- and
- a plate connected to the ring-shaped damping element.
Dependencies are inferred from the claim text.