US 12,014,714 B2
Cellular sound insulation structure including a diaphragm provided with a tube configured to treat different acoustic frequencies, method for manufacturing such a cellular sound insulation structure, and associated tool
Alain Porte, Toulouse (FR); Jacques Lalane, Toulouse (FR); Florian Ravise, Toulouse (FR); Franck Dobigeon, Toulouse (FR); and Florent Mercat, Toulouse (FR)
Assigned to Airbus Operations SAS, Toulouse (FR)
Filed by Airbus Operations SAS, Toulouse (FR)
Filed on May 26, 2021, as Appl. No. 17/330,910.
Claims priority of application No. 2005672 (FR), filed on May 29, 2020.
Prior Publication US 2021/0375252 A1, Dec. 2, 2021
Int. Cl. B32B 3/12 (2006.01); B32B 3/26 (2006.01); B32B 3/28 (2006.01); B32B 5/02 (2006.01); B64D 29/00 (2006.01); B64D 33/02 (2006.01); G10K 11/168 (2006.01)
CPC G10K 11/168 (2013.01) [B32B 3/12 (2013.01); B32B 3/266 (2013.01); B32B 3/28 (2013.01); B32B 5/024 (2013.01); B64D 29/00 (2013.01); B64D 33/02 (2013.01); B32B 2262/103 (2013.01); B32B 2307/102 (2013.01); B32B 2605/18 (2013.01); B64D 2033/0206 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cellular sound insulation structure comprising:
a plurality of cells, each cell of the plurality of cells having a base cross section of arbitrary shape and a height extending between a first side and a second side, each cell of the plurality of cells being juxtaposed along two orthogonal directions relative to at least two cells of the plurality of cells,
wherein each cell of the plurality of cells comprises a diaphragm, the diaphragm comprising
a membrane dividing the cell into two compartments along the height, the membrane comprising at least one orifice passing through a thickness of the membrane and an outer peripheral edge fixed to an internal wall of the cell, and
at least one tube enclosing the at least one orifice and extending from a face of the membrane into one of the two compartments, the tube comprising a free end, forming an acoustic outlet, which is positioned at a distance from the base cross section,
wherein the membrane is folded such that the outer peripheral edge of the membrane is located along the height between the orifice and one of the first and second sides.