Sandwich Element for the Sound-Absorbing Inner Cladding of Means of Transport, Especially for the Sound-Absorbing Inner Cladding of Aircraft

• US 20090090580A1
• Filed: 05/24/2006
• Published: 04/09/2009
• Est. Priority Date: 05/24/2006
• Status: Abandoned Application

• Current Assignee: Airbus Deutschland GmbH (Airbus SE)
• Original Assignee: Airbus Deutschland GmbH (Airbus SE)
• Inventors: Hotzeldt, Stephan, Erfurth, Steffen, Ohlendorf, Bernd, Schindler, Oliver
• Application Number:
  US12/227,569
• Publication Number:
  US 20090090580A1
• Time in Patent Office: Days
• US Class Current: 181/290
• CPC Class Codes: B32B 15/04 comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042
• CPC Class Codes: B32B 15/18 comprising iron or steel B32B15/011, B32B15/012 and B32B15/013 take precedence
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2260/021 Fibrous or filamentary layer layers of natural mineral fibres or particles being impregnated in a plastic substance B32B19/02
• CPC Class Codes: B32B 2260/028 Paper layer
• CPC Class Codes: B32B 2260/046 Synthetic resin
• CPC Class Codes: B32B 2262/02 Synthetic macromolecular fibres
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2262/103 Metal fibres
• CPC Class Codes: B32B 2262/106 Carbon fibres, e.g. graphite fibres
• CPC Class Codes: B32B 2262/108 Rockwool fibres
• CPC Class Codes: B32B 2266/02 Organic
• CPC Class Codes: B32B 2266/0214 Materials belonging to B32B27/00
• CPC Class Codes: B32B 2266/045 Metal
• CPC Class Codes: B32B 2266/06 Open cell foam
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 2605/003 Interior finishings
• CPC Class Codes: B32B 2605/18 Aircraft blades, propellers B32B2603/00
• CPC Class Codes: B32B 29/002 as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/06; next to a bituminous or tarry layer B32B11/06; next to a water-setting substance layer B32B13/08; next to a metal layer B32B15/12; next to a glass layer B32B17/065; next to a layer formed of natural mineral fibres or particles B32B19/046; next to a wood layer B32B21/06; next to a cellulosic plastic layer B32B23/06; next to a natural or synthetic rubber layer B32B25/06; next to a synthetic resin layer B32B27/10
• CPC Class Codes: B32B 3/20 : of hollow pieces, e.g. tubes; of pieces with channels or cavities
• CPC Class Codes: B32B 3/266 : characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B32B 3/28 : characterised by a layer comprising a deformed thin sheet , i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled B32B29/08 takes precedence
• CPC Class Codes: B32B 5/02 : characterised by structural features of a fibrous or filamentary layer layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02
• CPC Class Codes: B32B 5/18 : characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/22 : characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed layer formed of natural mineral fibres or particles next to a foam layer B32B19/047, next to a layer made of particles B32B19/048, or next to a fibrous or filamentary layer B32B19/06; paper layer or cardboard layer next to a paper layer or cardboard layer B32B29/005, next to a foam layer B32B29/007, next to a fibrous or filamentary layer B32B29/02, or next to a particulate layer B32B29/04
• CPC Class Codes: B60R 13/02 : Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners B60R13/01 takes precedence ; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18
• CPC Class Codes: B60R 13/0815 : Acoustic or thermal insulation of passenger compartments wall or roof liners integrating the insulating function B60R13/02; insulating floor mats or carpets B60N3/04
• CPC Class Codes: B64C 1/40 : Sound or heat insulation , e.g. using insulation blankets
• CPC Class Codes: G10K 11/168 : Plural layers of different materials, e.g. sandwiches
• CPC Class Codes: Y02T 50/40 : Weight reduction

Abstract

A sandwich element for the sound-absorbing inner cladding of means of transport such as an aircraft. The sandwich element includes a three-dimensionally constructed core structure disposed between two cover layers that run substantially parallel to one another at a distance. A plurality of passages for sound transmission are incorporated in the core structure and/or in at least one cover layers, wherein at least one sound absorption layer is disposed in the area of at least one cover layer at least in parts.

Claims

1. A sandwich element for providing a sound-absorbing inner cladding of means of transport, comprising:

a three-dimensionally constructed core structure disposed between two cover layers that run substantially parallel to one another at a distance;

wherein a plurality of passages for sound transmission, disposed in a perforation-like manner, are incorporated respectively in the core structure and in both cover layers;

wherein the core structure comprises a plurality of through channels disposed adjacent to one another and parallel to the cover layers;

wherein the trough channels are adapted for drainage of fluids and for flushing out foreign bodies; and

wherein at least one sound absorption layer is disposed in at least part of an area of a cover layer.

2. The sandwich element according to claim 1, wherein the channels have flanks, wherein the flanks each form at least one of a continuous, substantially flat and curved surface.

3. The sandwich element according to claim 1, wherein the channels have flanks that are formed with a plurality of substantially flat and/or curved partial surfaces, wherein the partial surfaces adjoin one another at an angle of less than 180°

.

4. The sandwich element according to claim 1, wherein the core structure has at least one of a repetitive triangular, trapezoidal, rectangular and wavy cross-sectional geometry.

5. The sandwich element according to claim 1, wherein the passages are constructed as at least one of cylindrical, elliptical and polygonal openings.

6. The sandwich element according to claim 1, wherein the sound absorption layer is constructed as thermally insulating.

7. The sandwich element according to claim 1, wherein at least one of the core structure and the cover layers are formed with a plastic material.

8. The sandwich element according to claim 1, wherein at least one of the core structure and the cover layers are formed with a fibre-reinforced plastic material.

9. The sandwich element according to claim 1, wherein at least one of the core structure and the cover layers are formed with a metal material.