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Sub Tragus Ear Unit (19) TZZ Z¥_T (11) EP 2 690 883 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 29.01.2014 Bulletin 2014/05 H04R 1/10 (2006.01) H04R 25/00 (2006.01) A44C 7/00 (2006.01) A61F 11/00 (2006.01) (2006.01) (21) Application number: 12178314.6 A61F 11/08 (22) Date of filing: 27.07.2012 (84) Designated Contracting States: (72) Inventor: Sandanger, Vidar AL AT BE BG CH CY CZ DE DK EE ES FI FR GB 0208 Oslo (NO) GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (74) Representative: Acapo AS Designated Extension States: P.O. Box 1880 Nordnes BA ME 5817 Bergen (NO) (71) Applicant: Freebit AS 0208 Oslo (NO) (54) Sub tragus ear unit (57) A sub-tragus ear unit for comfortable wear of an from the attachment functionality that is provided by a in-ear ear unit is provided. The sub -tragus ear unit separate anchor, wherein the earphone is attached to achieves the technical effect by separating the earphone said anchor. EP 2 690 883 A1 Printed by Jouve, 75001 PARIS (FR) 1 EP 2 690 883 A1 2 Description open to the surroundings to a certain degree, which pro- vides better comfort than a unit that blocks or closes off Technical Field the auditory canal. This provides air circulation at the expense of admitting ambient sounds. [0001] The invention relates to a system for removable 5 [0007] For the fifth solution one should refer to in-ear ear attachment in general and in particular a sub tragic speakers as disclosed in WO/2009/143055 where a ear unit for comfortable attachment of an ear unit. hearing element is placed into the concha and facing the tragus, perpendicular to that of the on-ear solution. The Background Art problem is stable positioning of the hearing element and 10 discomfort relating to the edge of the hearing element is [0002] Microphone/earpiececombinations, wireless or pressed against the inner wall of the concha when posi- attached by wire, to telephones, music systems, switch- tioned in the ear. boards etc. are well known. A wide variety of solutions exist. Brief Disclosure of the Invention [0003] One solution is known as the "in-ear" solution, 15 wherein the sound emitting device, also known as a hear- Problems to be Solved by the Invention ing element, enters the ear canal. Typically a housing unit comprising a hearing element is positioned inside [0008] Therefore, a main objective of the present in- the concha and within the tragus and anti tragus, while vention is to provide a system for a compact and com- a funnel ducts the sound into the ear canal. Frequently 20 fortable solution having an improved attachment that the funnel is provided with a gasket having flanges to does not cause discomfort in the ear canal and is also dampen ambient sounds. Typically such devices use the capable of excluding ambient sound ear canal for attachment. While the solution is compact, removes ambient sound efficiently and also allows for Means for Solving the Problems good audio fidelity it suffers from the disadvantage of 25 being uncomfortable due to pressure exerted on the pres- [0009] The objective is achieved according to the in- sure sensitive ear canal. vention by an ear unit as defined in the preamble of claim [0004] Another solution is the "on ear" solution, where- 1, having the features of the characterising portion of in the hearing element is held against the ear having a claim 1. concha. This geometry allows for a wide hearing element 30 [0010] The objective is also achieved according to the to be placed flat against the concha. Unlike the in ear invention by a load bearing anchor as defined in the pre- solution, this solution requires a separate means for hold- amble of claim 5, having the features of the characterising ing the hearing element in position over the concha and portion of claim 5. several such means are well known in the art, such as [0011] The present invention attains the above-de- over-head attachment, headband and over-ear attach- 35 scribed objective by separating the attachment, trans- ment. This solution is simple but suffers from long term ducer and optionally occlusion functionalities into two dis- discomfort due to pressure exerted on the ear by the tinct parts: an anchor that provides stable attachment means for holding. There can also be problems with am- relative to an ear, and an hearing element that comprises bient sound entering the ear unless a sound absorbing the transducer which provides sound and optionally an cushion is used that encloses the ears fully bringing in 40 occlusion, wherein the acoustic element projects the other disadvantages such as large size. sound into the sub tragic region. [0005] A third solution is the "ear bud" solution where [0012] Optionally the occlusion can be perforated with a housing unit comprising a hearing element is positioned holes that are large enough to admit diffusion of air, yet inside the concha and held in place by tragus and anti small enough to prevent sound propagation. tragus. In this way the housing unit also forms the means 45 for holding the hearing element in place. While compact Effects of the Invention the disadvantage is discomfort due to pressure exerted on the tragus and anti tragus and also that it is difficult [0013] The technical differences over prior art is that a to exclude ambient sounds. If the pressure against the sub tragic system is provided wherein the attachment is tragus and anti tragus is reduced the ear bud then is50 provided by an anchor and not by any elements protrud- rather loose and can easily fall out. ing into the ear canal. [0006] A fourth solution is proposed by the present ap- [0014] These effects provide in turn several further ad- plicant as disclosed in WO/2002/045390 relating to an vantageous effects: earpiece having a C- shape, and WO/ 2008/147215 relat- ing to an improved earpiece having a curve and a curva- 55 • it makes it possible to avoid bulky holding means as ture. Both disclose comfortable means for stable attach- for the on-ear solutions and instead use light weight ment to an anti helix of an ear. The former discloses an anchors such as those of the fourth solution, open solution that allows the auditory canal to remain • it avoids discomfort related to elements entering the 2 3 EP 2 690 883 A1 4 ear canal, (continued) • it allows for a light weight structure, • it avoids discomfort relating to pressure exerted on 12 Crus of helix the tragus and anti tragus, and 13 Antihelix • it enables stable positioning in the ear without exert- 5 ing uncomfortable pressure against the concha. 14 Crura of antihelix 15 Superior crux [0015] Optionally it also allows for further advanta- 16 Inferior crux geous effects: 10 17 Fossa triangularis • it allows for excluding ambient sound without use of 18 Sulcus auriculae posterior a large absorbing cushion around the ear, and • it allows for air circulation. 21 Tragus 22 Antitragus Brief Description of the Drawings 15 23 Incisura intertragica, intertragic notch [0016] The invention will be further described below in 24 Concha connection with exemplary embodiments which are schematically shown in the drawings, wherein: 25 Cymba concha 20 26 Cavum concha Fig. 1A shows the anatomy of a human ear from the 27 Scapha outside, Fig. 1B shows a cross section the anatomy of a hu- 28 Sub tragic region man ear along A - A, 29 Tympanic membrane, eardrum Fig. 2A shows the operating principles of the present 25 invention, with an ear unit inserted into an ear as 30 Ear canal seen from the outside, 100 Ear unit Fig. 2B shows the operating principles of the present invention in an intersection along A - A in a first em- 200 Anchor bodiment, 30 210 Curve Fig. 2C shows the operating principles of the present invention in an intersection along A - A in a second 212 Upper end embodiment, 214 Lower end Fig. 3 and 4 show two preferred embodiments of the 216 Extended lower end present invention, 35 Fig. 5A shows an improved load bearing anchor in- 218 Curvature serted into an ear wherein the attachment part ex- 300 Housing tends from the curve over the concha, Fig. 5B shows the improved load bearing anchor of 350 Hearing element 40 Fig. 5A close to the plane of the curve 352 Hearing element opening Fig. 5C shows the improved load bearing anchor of Fig. 5C at a different angle. 354 Audio duct Fig. 6 shows a sound damping element attached to 356 Audio duct opening the load bearing anchor, Fig. 7 shows an alternative use of a load bearing45 360 Electroacoustic element anchor wherein the attachment part extends from 370 Gasket the curve through the intertragic notch, and 372 Flanges Fig. 8A and 8B shows a hearing unit in an un- occlud- ed position and in an occluded position respectively. 400 Part extending downwards 50 500 Attachment part Description of the Reference Signs 502 Attachment arm [0017] The following reference numbers and signs re- 504 Attachment end fer to the drawings: 55 600 Sound damping element 10 Pinna 610 Shell 11 Helix 620 Connector to attachment part 3 5 EP 2 690 883 A1 6 Detailed Description opening faces the opening to the ear canal which extends from the sub tragic area. Anatomy of the Human Ear [0023] It should also be noted that the hearing element, enabled by the separate anchoring, projects underneath [0018] In order to gain an understanding of the back- 5 the tragus.
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