Sound-absorbing element for transport means, in particular for aircraft
View Patent ↗A sound absorption element for means of transport, in particular for aircraft, comprising at least one sound absorption panel arranged on a base panel with the base panel comprising a multitude of recesses, in particular a hole grid or the like, for the transmission of sound. According to the invention, the sound absorption panels are each framed by a frame, wherein on the at least one frame at least in some sections a transition profile, in particular to prevent fatigue fractures due to stepwise changes of rigidity between the at least one frame and the base panel is arranged. Due to the base panel comprising a multitude of recesses, in particular comprising a hole grid, in connection with the sound absorption panels an air-permeable sound absorption element can be achieved.
1. A sound absorption element for means of transport, in particular for aircraft, comprising:
a base panel, and
at least one sound absorption panel arranged on the base panel,
wherein the base panel comprises a multitude of recesses, in particular a hole grid or the like, in a region underneath the absorption panel for the transmission of sound;
the at least one sound absorption panel being framed by a frame, and
wherein an elastic transition profile is provided between the frame and the base panel on at least some sections of the frame in order to, upon occurrence of mechanical vibrations resulting from impinging sound waves, prevent fatigue fractures due to stepwise changes of rigidity.
2. The sound absorption element of claim 1 , wherein the elastic transition profile comprises a self-adhesive plastic material.
3. The sound absorption element of claim 1 , wherein the frame is formed with four frame segments, wherein the four frame segments are connected to the base panel so as to abut, approximately at right angles to each other, in order to form an essentially rectangular frame.
4. The sound absorption element of claim 1 ,
wherein the frame is formed with at least one frame segment, and
wherein the elastic transition profile is connected, at least in some sections, to at least one frame segment and to the base panel.
5. The sound absorption element of claim 1 , further comprising frame segments having hollow profiles in order to make it possible for water and extraneous particles to drain away.
6. The sound absorption element of claim 5 , wherein the hollow profile is a rectangular hollow profile.
7. The sound absorption element of claim 1 , wherein a connecting strap is applied to frame segments in corner regions of the frames to provide mechanical stiffening.
8. The sound absorption element of claim 1 ,
wherein the frame comprises diagonally opposite corner regions,
wherein a retention strap extends for affixing the at least one sound absorption panel to the base panel, the retention strap starting from the diagonally opposite corner regions of the frame.
9. The sound absorption element of claim 8 ,
wherein the retention strap in the corner regions of the frame is connected to the base panel using connecting means such as clamp-type connectors or the like.
10. The sound absorption element of claim 1 , wherein a flat seal sealing means is mounted on at least some sections of a frame segment.
11. The sound absorption element of claim 1 , wherein at least one clip is arranged so as to provide a conductive connection between a frame segment and the base panel.
12. The sound absorption element of claim 1 , wherein the at least one sound absorption panel comprises a sound-absorbent material.
13. The sound absorption element of claim 12 , wherein the sound-absorbent material is selected from a group consisting of plastic foam, glass wool, mineral wool or the like.
14. The sound absorption element of claim 1 ,
wherein the frame is formed with at least one frame segment, and
wherein at least one of the base panel and the at least one frame segment comprises at least one of a metallic material and a plastic material.