Earpiece

1. An earpiece for an ear, said ear comprising a concha cavity at least partially delimited by a concha floor, a concha side wall and a concha ceiling, wherein said concha side wall connects said concha floor to said concha ceiling, wherein the surface of said concha ceiling has a normal at least a component of which being directed towards said concha floor,

said earpiece comprising a peripheral skirt comprising a positioning skirt portion which in turn comprises an outer skirt surface and an inner skirt surface, wherein a transition from said outer skirt surface to said inner skirt surface occurs at a skirt edge,

wherein said skirt edge extends at least partially circumferentially around a central axis of said earpiece, wherein said earpiece is adapted to be moved to a use position, at least partially within said concha cavity, in a direction parallel to said central axis, during insertion of said earpiece into said ear,

wherein, when said peripheral skirt is in a non-influenced condition, at least a portion of said inner skirt surface faces said central axis, and

wherein said earpiece is such that said positioning skirt portion is adapted to assume said use position at least partially within said concha cavity whereby:

at least a portion of said outer skirt surface abuts at least a portion of said concha ceiling,

said skirt edge is located closer to said concha floor than said outer skirt surface, and

said skirt edge is spaced from said concha floor.

2. The earpiece according to claim 1 , wherein, as seen in a plane defined by said central axis and a radial axis being perpendicular to said central axis, said positioning skirt portion comprises a segment, extending between two distinct positions along said radial axis, being such that, when said peripheral skirt is in said non-influenced condition, each one of said inner skirt surface and said outer skirt surface associated with said segment is located on the same side of said skirt edge, as seen along said central axis.

3. The earpiece according to claim 1 , wherein said outer skirt surface comprises an outer skirt surface distal point located farthest away from said skirt edge, as seen along said outer skirt surface, wherein said inner skirt surface comprises an inner skirt surface distal point located farthest away from said skirt edge, as seen along said inner skirt surface, said outer skirt surface distal point being separate from said inner skirt surface distal point, wherein at least a portion of said positioning skirt portion is such that, when said peripheral skirt is in said non-influenced condition, each one of said outer skirt surface distal point and said inner skirt surface distal point are located on the same side of said skirt edge, as seen along said central axis.

4. The earpiece according to claim 1 , wherein said positioning skirt portion comprises a neutral layer located halfway between said inner skirt surface and said outer skirt surface, as seen in a direction parallel to a normal to the outer skirt surface, wherein said neutral layer of at least a portion of said positioning skirt portion is such that it, as seen in a plane defined by said central axis and a radial axis being perpendicular to said central axis and when said peripheral skirt is in said non-influenced condition, comprises a first neutral layer point and a second neutral layer point separated by a distance (L nlp ) along said radial axis, wherein a neutral layer line extending through each one of said first and second neutral layer points forms a line angle to said central axis, said line angle being within the range of 15-65°.

5. The earpiece according to claim 1 , wherein said earpiece is such that said positioning skirt portion is adapted to assume a use position at least partially within said concha cavity whereby, for every portion along said skirt edge, an airgap is formed between said skirt edge and said concha floor.

6. The earpiece according to claim 1 , wherein, when said peripheral skirt is in said non-influenced condition, a projection of said peripheral skirt onto an plane, the normal of which coincides with said central axis, has an outer contour and wherein the central axis is located within said outer contour, said central axis being positioned such that a minimum difference is obtained between a largest distance and a smallest distance from said central axis to the outer contour, as measured in the plane, wherein said earpiece comprises a maximum contour point with a maximum distance in said plan from said central axis to said outer contour.

7. The earpiece according to claim 1 , wherein said positioning skirt portion comprises a distal portion adapted to be located farthest away from said concha floor, as seen along said central axis, when said positioning skirt portion assumes said use position, said positioning skirt portion extending at least partially from said distal portion to said skirt edge.

8. The earpiece according claim 6 , wherein a portion of said peripheral skirt is adapted to be elastically deformed such that the distance in said plane from said central axis to said outer contour of said portion can be elastically reduced by at least 5%.

9. The earpiece according to claim 1 , wherein a material thickness of the positioning skirt portion is defined as the distance between said inner skirt surface and said outer skirt surface, as seen in a direction parallel to the normal to the outer skirt surface.

10. The earpiece according to claim 1 , wherein said concha ceiling, which at least a portion of said outer skirt surface is adapted to abut when said positioning skirt portion assumes said use position, comprises a ceiling portion from at least one of the following portions of said ear: an antihelix, a tragus and an antitragus, preferably, said concha ceiling comprises a ceiling portion from said antihelix.

11. The earpiece according to claim 1 , wherein said earpiece is such that said positioning skirt portion is adapted to assume said use position at least partially in said concha cavity, whereby a minimum distance between said skirt edge and said concha floor, as seen along said central axis of said earpiece, is at least 0.5 mm.

12. The earpiece according to claim 1 , wherein said positioning skirt portion is adapted to assume said use position at least partially in said concha cavity such that at least a portion of said skirt edge abuts at least a portion of said concha side wall, thereby preventing said skirt edge from contacting said concha floor.

13. The earpiece according to claim 1 , wherein said earpiece further comprises a housing, wherein said peripheral skirt at least partially circumscribes said housing.

14. The earpiece according to claim 1 , wherein said earpiece further comprises a movement-prevention member adapted to prevent said positioning skirt portion from moving relative to said concha floor to a position in which at least a portion of said skirt edge contacts said concha floor.

15. The earpiece according to claim 1 , wherein said earpiece further comprises sound emitting means.

16. The earpiece according to claim 11 , wherein the minimum distance between said skirt edge and said concha floor, as seen along said central axis of said earpiece, is at least 1.0 mm.

17. The earpiece according to claim 11 , wherein the minimum distance between said skirt edge and said concha floor, as seen along said central axis of said earpiece, is at least 1.5 mm.

18. The earpiece according to claim 15 , wherein the sound emitting means is a loudspeaker.