EP2194731A2 - Earpiece supports and ear fitting piece for a hearing aid and use of a thermoplast to create an ear fitting piece - Google Patents

Earpiece supports and ear fitting piece for a hearing aid and use of a thermoplast to create an ear fitting piece Download PDF

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Publication number
EP2194731A2
EP2194731A2 EP09169944A EP09169944A EP2194731A2 EP 2194731 A2 EP2194731 A2 EP 2194731A2 EP 09169944 A EP09169944 A EP 09169944A EP 09169944 A EP09169944 A EP 09169944A EP 2194731 A2 EP2194731 A2 EP 2194731A2
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EP
European Patent Office
Prior art keywords
earpiece
earmold
adapter element
ear
thermoplastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09169944A
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German (de)
French (fr)
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EP2194731A3 (en
EP2194731B1 (en
Inventor
Uli Gommel
Daniela Dr. Hertel
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Sivantos Pte Ltd
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Siemens Medical Instruments Pte Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/652—Ear tips; Ear moulds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/658—Manufacture of housing parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/33—Buckles, buttons, clasps, etc. having adhesive fastener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45262—Pin, post and receiver

Definitions

  • the invention relates to a specified in claim 1 earpiece for a hearing aid, a specified in claim 7 in-ear headphones, an indicated in claim 8 earmold for a hearing aid and a specified in claim 13 use of a thermoplastic for producing an earmold.
  • the ear mold of a hearing device user is removed and made according to this a shell or a body in a solid or hard design.
  • the hard version is, for example, an ear mold or a plastic shell produced by means of rapid prototyping technology.
  • a mechanical connection between loudspeakers, also referred to as earpiece, and earpiece, preferably a "hard snap" is selected.
  • FIG. 1 This so-called "hard-hard connection” is shown schematically.
  • a conically shaped, hard snap element 21 of a loudspeaker 23 can be inserted accurately into an opening 22 of a hard ear piece 24. Due to the undercut of the conical snap element 21, the snap element 21 snaps securely into the opening 22. Due to the hardness of the materials, the connecting elements 21, 22 can be made relatively small.
  • the ear pieces are not individually adapted, but the hearing device user can choose from a limited number of different sized, flexible ear pieces made of a soft material, such as silicone. Different soft ear pieces cover the different ear canal shapes of the hearing aid wearer. Since the respective ear piece does not fit exactly to the respective ear canal, the ear piece is usually reversibly deformed during insertion into the ear canal. It must therefore be made as elastic as possible in order to provide a comfortable feeling while wearing. On the other hand, the connector to the speaker must be sufficiently strong to ensure a secure fit in the earpiece. This requires a minimum size of the snap element of the speaker. In FIG. 2 this so-called “hard-soft connection" is shown schematically.
  • a conically shaped, hard snap element 21 of a loudspeaker 23 can be accurately inserted into an opening 22 of a soft ear piece 24 by deforming it. Due to the different hardness of the materials, the connecting elements 21, 22 must be made relatively large for a secure fit.
  • the post-published DE 10 2008 036 258 A1 discloses an earmold for a hearing aid having an opening for receiving a snap element disposed on a receiver or on a sound tube, wherein the opening is lined with a hard layer.
  • This offers the advantage that the connection is suitable for both soft and hard ear pieces.
  • the snap element is spherical educated. As a result, the snap element can be made very small.
  • the stated object is achieved with the earpiece of the independent patent claim 1, with an in-ear earphone of the independent claim 7, with the ear piece for a hearing aid of the independent claim 8 and the use of a thermoplastic for producing an ear tip of the independent claim 13 solved.
  • the invention claims an earpiece for snapping into an earmold having a spherical portion and having a cone-shaped portion formed at the eartip-facing end and tapering toward the earmold. This offers the advantage of a mobile, yet secure hold of the earpiece in an earmold.
  • the conical section can be designed such that it forms a stop when tilting the earpiece in the earmold. As a result, the tilting or a deflection of the earpiece is limited.
  • the earpiece can be formed rotationally symmetrical.
  • the simple production is advantageous.
  • an axially and rotationally symmetrically arranged sound channel can be formed in the earpiece. Through this, the sound waves of a listener reach the eardrum of a user.
  • the earpiece can be integrally formed of metal or a hard plastic and with a handset be welded or glued. This provides a secure connection with the listener.
  • the earpiece in the spherical section may have rotationally symmetrical slots through the shape and number of a plug-in force in the earmold is adjustable. This offers the advantage that the insertion force can be determined exactly.
  • the invention also provides an in-ear earpiece for a hearing aid with a earpiece according to the invention.
  • the invention also provides an earmold for a hearing aid, comprising an adapter element fixedly arranged in the earmold piece, into which a receiver socket according to the invention can be detachably fixed.
  • the adapter element has a bead-shaped recess running around on the inside, with which the spherical section of the earpiece can form a positive connection, so that the earpiece in the adapter element can be tilted or deflected.
  • the adapter element may be formed as part of an opening of the earmold. As a result, the adapter element is firmly connected to the earmold.
  • the earmold piece can be formed from a soft, flexible plastic.
  • the adapter element may be formed of metal or a hard plastic. This makes it possible to produce a hard-hard connection between an earmold and a earpiece.
  • the earmold can be made with a two-component injection molding process of LSR / TPE and a thermoplastic for the adapter element.
  • the thermoplastic may be polyamide or polybutylene terephthalate. These thermoplastics meet the required properties for a long-lasting snap connection.
  • FIG. 3 an earmold 10 and a handset 11 are shown.
  • the earmold 10 has an opening 13 with an adapter element 7, in which a mounted on the handset 11 earpiece 1 can snap.
  • an adapter element 7 and earpiece 1 must be suitably designed.
  • FIGS. 4 and 5 show the solution according to the invention in detail.
  • the earmold is made of a soft material that is easily adaptable to the ear canal, preferably made of liquid silicone rubber (LSR).
  • LSR liquid silicone rubber
  • the earmold including adapter element 7 is integrally formed from a hard plastic.
  • the adapter element 7 can also be made of metal and pressed into the earmold.
  • the adapter element 7 is hollow with an opening 9 for the passage of sound waves and preferably cylindrical.
  • the adapter element 7 takes on the earpiece 1 in the form of a snap connection.
  • the earpiece 1 has a spherical portion 2, which engages in a corresponding, bead-shaped recess 8 of the adapter member 7 frictionally. Due to the spherical shape of section 2, the earpiece 1 can be moved like a ball joint in the adapter element 7.
  • the bead-shaped recess 8 or circumferential groove on the inside of the adapter element 7 has a curvature which is approximately equal to the curvature of the spherical portion 2 of the earpiece 1.
  • FIG. 4 shows the earpiece 1 and the adapter element 7 in a straight aligned position.
  • FIG. 5 shows a cross section through the adapter element 7 and arranged in its opening 9 earphone 1 according to FIG. 4 in a mutually tilted position.
  • Sound waves emitted by a receiver pass through the sound channel 7 of the earpiece 1 and through the opening 9 in the adapter element 7 to the eardrum of a hearing device user.
  • the spherical portion 2 of the earpiece 2 snaps positively into a radius of the spherical portion 2 adapted, bead-shaped recess 8 of the adapter element 7.
  • a rear handle 5 of about 0.02 to 0.10 mm required.
  • a maximum tilt of the earphone 1 in the adapter element 7 is determined by the cone-shaped portion 3.
  • the earpiece 1 goes so on stop 6 with the adapter element 7.
  • the maximum tilt angle of the earpiece 1 can be adjusted. Theoretically, any angles are possible. Due to the conical section unintentional release of the connector between earpiece 1 and adapter element 7 is prevented in excessive tilting or deflecting the earpiece 1.
  • the conical section 3 also facilitates the insertion of the earpiece 1 into the adapter element 7.
  • the insertion force can be adjusted by the attachment of slots 12 in the spherical portion 2 of the earphone 1.
  • the arrangement of the slots 12 is preferably rotationally symmetrical.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Telephone Set Structure (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

The earpiece adapter (1) has a spherical section (2), a conical section (3) which is formed at the end facing an ear mold and tapers towards the ear mold. The conical section is formed such that it forms a stop at the tilting of the earpiece adapter in the ear mold. The earpiece adapter is rotation symmetrically formed. An independent claim is also included for an ear mold with an adapter element.

Description

Die Erfindung betrifft einen im Patentanspruch 1 angegebenen Hörerstutzen für ein Hörgerät, einen im Patentanspruch 7 angegebenen Im-Ohr-Hörer, ein im Patentanspruch 8 angegebenes Ohrpassstück für ein Hörgerät und eine im Patentanspruch 13 angegebene Verwendung eines Thermoplasts zur Herstellung eines Ohrpassstücks.The invention relates to a specified in claim 1 earpiece for a hearing aid, a specified in claim 7 in-ear headphones, an indicated in claim 8 earmold for a hearing aid and a specified in claim 13 use of a thermoplastic for producing an earmold.

Bei dem auf dem Markt befindlichen Hinter-dem-Ohr und In-dem-Ohr Hörgeräten ist es in der Regel notwendig, ein an den Ohrkanal eines Hörgeräteträgers angepasstes Ohrstück mit einem Im-Ohr-Lautsprecher zu verbinden. Zur Herstellung einer sicheren Verbindung gibt es je nach Ausführungsform des Ohrstücks unterschiedliche Lösungen.In the case of the behind-the-ear and in-the-ear hearing aids available on the market, it is generally necessary to connect an ear piece adapted to the ear canal of a hearing aid wearer to an in-ear loudspeaker. Depending on the embodiment of the ear piece, there are different solutions for producing a secure connection.

Für individuell angepasste Ohrstücke, auch Ohrpassstücke genannt, wird die Ohrform eines Hörgerätenutzers abgenommen und entsprechend dieser eine Schale oder ein Körper in einer festen bzw. harten Ausführung angefertigt. Die harte Ausführung ist beispielsweise eine Otoplastik oder eine mittels Rapid-Prototyping Technik hergestellte Kunststoffschale. In diesen Fällen wird als mechanische Verbindung zwischen Lautsprecher, auch als Hörer bezeichnet, und Ohrstück bevorzugt eine "harte Verschnappung" gewählt. In Figur 1 ist diese sogenannte "Hart-Hart-Verbindung" schematisch dargestellt. Ein kegelförmig geformtes, hartes Schnappelement 21 eines Lautsprechers 23 kann in eine Öffnung 22 eines harten Ohrstücks 24 passgenau eingeführt werden. Durch den Hinterschnitt des kegelförmigen Schnappelements 21 rastet das Schnappelement 21 sicher in der Öffnung 22 ein. Aufgrund der Härte der Materialien können die Verbindungselemente 21, 22 relativ klein ausgeführt sein.For individually adapted ear pieces, also called ear molds, the ear mold of a hearing device user is removed and made according to this a shell or a body in a solid or hard design. The hard version is, for example, an ear mold or a plastic shell produced by means of rapid prototyping technology. In these cases, a mechanical connection between loudspeakers, also referred to as earpiece, and earpiece, preferably a "hard snap" is selected. In FIG. 1 This so-called "hard-hard connection" is shown schematically. A conically shaped, hard snap element 21 of a loudspeaker 23 can be inserted accurately into an opening 22 of a hard ear piece 24. Due to the undercut of the conical snap element 21, the snap element 21 snaps securely into the opening 22. Due to the hardness of the materials, the connecting elements 21, 22 can be made relatively small.

Bei einer anderen Lösung sind die Ohrstücke nicht individuell angepasst, sondern der Hörgerätenutzer kann aus einer begrenzten Anzahl verschieden großer, flexibler Ohrstücke aus einem weichen Material, beispielsweise Silikon, wählen. Unterschiedliche weiche Ohrstücke decken die unterschiedlichen Ohrkanalformen der Hörgeräteträger ab. Da das jeweilige Ohrstück nicht exakt zum jeweiligen Ohrkanal passt, wird das Ohrstück für gewöhnlich beim Einführen in den Ohrkanal reversibel verformt. Es muss daher möglichst elastisch ausgeführt sein, um ein angenehmes Gefühl beim Tragen zu gewähren. Andererseits muss die Steckverbindung zum Lautsprecher hinreichend fest sein, um einen sicheren Halt im Ohrstück zu gewährleisten. Dies erfordert eine Mindestgröße des Schnappelements des Lautsprechers. In Figur 2 ist diese sogenannte "Hart-Weich-Verbindung" schematisch dargestellt. Ein kegelförmig geformtes, hartes Schnappelement 21 eines Lautsprechers 23 kann in eine Öffnung 22 eines weichen Ohrstücks 24 passgenau eingeführt werden, indem es dieses verformt. Aufgrund der unterschiedlichen Härte der Materialien müssen die Verbindungselemente 21, 22 für einen sicheren Halt relativ groß ausgeführt sein.In another solution, the ear pieces are not individually adapted, but the hearing device user can choose from a limited number of different sized, flexible ear pieces made of a soft material, such as silicone. Different soft ear pieces cover the different ear canal shapes of the hearing aid wearer. Since the respective ear piece does not fit exactly to the respective ear canal, the ear piece is usually reversibly deformed during insertion into the ear canal. It must therefore be made as elastic as possible in order to provide a comfortable feeling while wearing. On the other hand, the connector to the speaker must be sufficiently strong to ensure a secure fit in the earpiece. This requires a minimum size of the snap element of the speaker. In FIG. 2 this so-called "hard-soft connection" is shown schematically. A conically shaped, hard snap element 21 of a loudspeaker 23 can be accurately inserted into an opening 22 of a soft ear piece 24 by deforming it. Due to the different hardness of the materials, the connecting elements 21, 22 must be made relatively large for a secure fit.

Ein weiterer Nachteil der "Hart-Weich-Verbindung" ist, dass es zu Abnutzungen des weichen Materials durch Schnappen auf dem harten Material kommen kann. Die Geometrie des Schnappelements muss aber "aggressiv" ausgeführt werden, damit ein sicherer Halt gegeben ist. Daher kann die Schnappverbindung nach einer geringen Anzahl von Steckzyklen nicht mehr zuverlässig halten.Another disadvantage of the "hard-soft connection" is that it can lead to wear of the soft material by snapping on the hard material. However, the geometry of the snap element must be performed "aggressive", so that a secure hold is given. Therefore, the snap connection can no longer reliably hold after a small number of mating cycles.

Die nachveröffentlichte DE 10 2008 036 258 A1 gibt ein Ohrpassstück für ein Hörgerät mit einer Öffnung zur Aufnahme eines an einem Hörer oder an einem Schallschlauch angeordneten Schnappelements an, wobei die Öffnung mit einer harten Schicht ausgekleidet ist. Dies bietet den Vorteil, dass die Verbindung sowohl für weiche als auch harte Ohrpasstücke geeignet ist. Vorzugsweise ist das Schnappelement kugelförmig ausgebildet. Dadurch kann das Schnappelement sehr klein ausgeführt sein.The post-published DE 10 2008 036 258 A1 discloses an earmold for a hearing aid having an opening for receiving a snap element disposed on a receiver or on a sound tube, wherein the opening is lined with a hard layer. This offers the advantage that the connection is suitable for both soft and hard ear pieces. Preferably, the snap element is spherical educated. As a result, the snap element can be made very small.

Es ist Aufgabe der Erfindung ein verbessertes Ohrpassstück und ein verbessertes Schnappelement anzugeben.It is an object of the invention to provide an improved earmold and an improved snap element.

Gemäß der Erfindung wird die gestellte Aufgabe mit dem Hörerstutzen des unabhängigen Patentanspruchs 1, mit einem Im-Ohr-Hörer des unabhängigen Patentanspruchs 7, mit dem Ohrpassstück für ein Hörgerät des unabhängigen Patentanspruchs 8 und der Verwendung eines Thermoplasts zur Herstellung eines Ohrpassstücks des unabhängigen Patentanspruchs 13 gelöst.According to the invention, the stated object is achieved with the earpiece of the independent patent claim 1, with an in-ear earphone of the independent claim 7, with the ear piece for a hearing aid of the independent claim 8 and the use of a thermoplastic for producing an ear tip of the independent claim 13 solved.

Die Erfindung beansprucht einen Hörerstutzen zum Einschnappen in ein Ohrpassstück mit einem kugelförmigen Abschnitt und mit einem konusförmigen Abschnitt, der an dem dem Ohrpassstück zugewandeten Ende ausgebildet ist und der sich zum Ohrpassstück hin verjüngt. Dies bietet den Vorteil eines beweglichen und trotzdem sicheren Halts des Hörerstutzens in einem Ohrpassstück.The invention claims an earpiece for snapping into an earmold having a spherical portion and having a cone-shaped portion formed at the eartip-facing end and tapering toward the earmold. This offers the advantage of a mobile, yet secure hold of the earpiece in an earmold.

In einer Weiterbildung kann der konusförmige Abschnitt derart ausgebildet sein, dass er beim Kippen des Hörerstutzens im Ohrpassstück einen Anschlag bildet. Dadurch ist die Verkippung bzw. eine Auslenkung des Hörerstutzens begrenzbar.In one development, the conical section can be designed such that it forms a stop when tilting the earpiece in the earmold. As a result, the tilting or a deflection of the earpiece is limited.

In einer weiteren Ausführungsform kann der Hörerstutzen rotationssymmetrisch ausgebildet sein. Vorteilhaft ist die einfache Herstellung.In a further embodiment, the earpiece can be formed rotationally symmetrical. The simple production is advantageous.

Des Weiteren kann ein axial und rotationssymmetrisch angeordneter Schallkanal im Hörerstutzen ausgebildet sein. Durch diesen gelangen die Schallwellen eines Hörers zum Trommelfell eines Nutzers.Furthermore, an axially and rotationally symmetrically arranged sound channel can be formed in the earpiece. Through this, the sound waves of a listener reach the eardrum of a user.

Außerdem kann der Hörerstutzen einstückig aus Metall oder einem harten Kunststoff gebildet und mit einem Hörer verschweißbar oder verklebbar sein. Dies bietet eine sichere Verbindung mit dem Hörer.In addition, the earpiece can be integrally formed of metal or a hard plastic and with a handset be welded or glued. This provides a secure connection with the listener.

In einer weiteren erfindungsgemäßen Ausführungsform kann der Hörerstutzen im kugelförmigen Abschnitt rotationssymmetrisch angeordnete Schlitze aufweisen, durch deren Form und Anzahl eine Steckkraft im Ohrpassstück einstellbar ist. Dies bietet den Vorteil, dass die Steckkraft exakt bestimmbar ist.In a further embodiment of the invention, the earpiece in the spherical section may have rotationally symmetrical slots through the shape and number of a plug-in force in the earmold is adjustable. This offers the advantage that the insertion force can be determined exactly.

Die Erfindung gibt auch einen Im-Ohr-Hörer für ein Hörgerät mit einem erfindungsgemäßen Hörerstutzen an.The invention also provides an in-ear earpiece for a hearing aid with a earpiece according to the invention.

Die Erfindung gibt auch ein Ohrpassstück für ein Hörgerät an, das ein im Ohrpassstücks fest angeordnetes Adapterelement umfasst, in das ein erfindungsgemäßer Hörerstutzen lösbar fest steckbar ist. Das Adapterelement weist eine auf der Innenseite umlaufende, wulstförmige Vertiefung auf, mit der der kugelförmige Abschnitt des Hörerstutzens einen Formschluss bilden kann, so dass der Hörerstutzen im Adapterelement verkippbar bzw. auslenkbar ist. Vorteilhaft daran ist, dass ein Hörerstutzen sicher in ein Ohrpassstück schnappen kann, dort beweglich gelagert ist und bei Bedarf wieder entfernt werden kann.The invention also provides an earmold for a hearing aid, comprising an adapter element fixedly arranged in the earmold piece, into which a receiver socket according to the invention can be detachably fixed. The adapter element has a bead-shaped recess running around on the inside, with which the spherical section of the earpiece can form a positive connection, so that the earpiece in the adapter element can be tilted or deflected. The advantage of this is that a earpiece can safely snap into an earmold, there is movably mounted and can be removed if necessary.

In einer weiteren Ausführungsform kann das Adapterelement als Teil einer Öffnung des Ohrpassstückes ausgebildet sein. Dadurch ist das Adapterelement fest mit dem Ohrpassstück verbunden.In a further embodiment, the adapter element may be formed as part of an opening of the earmold. As a result, the adapter element is firmly connected to the earmold.

In einer Weiterbildung kann das Ohrpassstück aus einem weichen, flexiblen Kunststoff gebildet sein.In a further development, the earmold piece can be formed from a soft, flexible plastic.

In einer Weiterbildung kann das Adapterelement aus Metall oder einem harten Kunststoff gebildet sein. Dadurch lässt sich eine Hart-Hart-Verbindung zwischen einem Ohrpassstück und einem Hörerstutzen herstellen.In a development, the adapter element may be formed of metal or a hard plastic. This makes it possible to produce a hard-hard connection between an earmold and a earpiece.

Des Weiteren kann das Ohrpassstück mit einem Zweikomponentenspritzgussverfahren aus LSR / TPE und einem Thermoplast für das Adapterelement hergestellt sein.Furthermore, the earmold can be made with a two-component injection molding process of LSR / TPE and a thermoplastic for the adapter element.

Die Erfindung beansprucht auch eine Verwendung eines Thermoplasts zur Herstellung eines erfindungsgemäßen Ohrpassstückes mit folgenden Eigenschaften:

  • Zug-Elastizitätsmodul nach ISO 527 mit einer Prüfgeschwindigkeit von 1 mm/min im Bereich 1000 bis 3000 MPa,
  • Dehnung bei Streckspannung nach ISO 527 im Bereich 3 bis 8 %,
  • Härte bei Kugeldruck H358/30 im Bereich 120 bis 150 MPa und
  • Trennkraft nach DIN ISO 813 bei einem Kohäsionsriss zwischen Adapterelement und Ohrpassstück unter Zugbelastung größer als 8 N/mm.
The invention also claims a use of a thermoplastic for producing an ear mold according to the invention having the following properties:
  • Tensile modulus according to ISO 527 with a test speed of 1 mm / min in the range of 1000 to 3000 MPa,
  • Elongation at yield stress according to ISO 527 in the range 3 to 8%,
  • Hardness at ball pressure H358 / 30 in the range 120 to 150 MPa and
  • Release force according to DIN ISO 813 with a cohesion crack between adapter element and earmold under tensile load greater than 8 N / mm.

Mit diesen Eigenschaften kann eine langlebige und sichere Schnappverbindung gebildet werden.With these features, a long-lasting and secure snap connection can be formed.

In einer Weiterbildung kann der Thermoplast Polyamid oder Polybutylenterephthalat sein. Diese Thermoplaste erfüllen die geforderten Eigenschaften für eine langlebige Schnappverbindung.In a development, the thermoplastic may be polyamide or polybutylene terephthalate. These thermoplastics meet the required properties for a long-lasting snap connection.

Weitere Besonderheiten und Vorteile der Erfindung werden aus den nachfolgenden Erläuterungen eines Ausführungsbeispiels anhand von schematischen Zeichnungen ersichtlich.Other features and advantages of the invention will become apparent from the following explanations of an embodiment with reference to schematic drawings.

Es zeigen:

Figur 1:
eine Schnappverbindung zwischen einem Ohrstück und einem Lautsprecher gemäß Stand der Technik,
Figur 2:
eine weitere Schnappverbindung zwischen einem Ohr- stück und einem Lautsprecher gemäß Stand der Tech- nik,
Figur 3:
ein Ohrpassstück und einen Hörer,
Figur 4:
einen Querschnitt durch einen in einem Adapterele- ment eingeschnappten Hörerstutzen in paralleler Lage und
Figur 5:
einen Querschnitt durch in einem Adapterelement eingeschnappten Hörerstutzen in gekippter Lage.
Show it:
FIG. 1:
a snap connection between an ear piece and a speaker according to the prior art,
FIG. 2:
another snap connection between an ear piece and a loudspeaker according to the prior art,
FIG. 3:
an earmold and a handset,
FIG. 4:
a cross section through a snapped in an Adapterele- element in a parallel position and
FIG. 5:
a cross section through snapped in an adapter element earphone in tilted position.

In Figur 3 sind ein Ohrpassstück 10 und ein Hörer 11 dargestellt. Das Ohrpassstück 10 weist eine Öffnung 13 mit einem Adapterelement 7 auf, in das ein am Hörer 11 angebrachter Hörerstutzen 1 einschnappen kann. Für eine sichere Schnappverbindung müssen Adapterelement 7 und Hörerstutzen 1 geeignet ausgebildet sein. Die Figuren 4 und 5 zeigen die erfindungsgemäße Lösung im Detail.In FIG. 3 an earmold 10 and a handset 11 are shown. The earmold 10 has an opening 13 with an adapter element 7, in which a mounted on the handset 11 earpiece 1 can snap. For a secure snap connection adapter element 7 and earpiece 1 must be suitably designed. The FIGS. 4 and 5 show the solution according to the invention in detail.

Figur 4 zeigt einen Querschnitt durch einen mit einem Hörer eines Hörgeräts verbindbaren Hörerstutzen 1 und durch ein mit einem Ohrpassstück verbindbares Adapterelement 7. Wegen der Übersichtlichkeit ist das Ohrpassstück in Figur 4 nicht dargestellt. Das Adapterelement 7 ist in eine Öffnung des Ohrpassstücks eingepasst. Vorteilhaft sind Ohrpassstück und Adapterelement 7 durch ein Zweikomponenten Spritzgussverfahren hergestellt, wobei das Adapterelement 7 aus einem harten Thermoplast, wie beispielsweise Polyamid (PA) oder Polybutylenterephthalat (PBT), gebildet ist. Der Thermoplast weist folgende Eigenschaften auf:

  • Zug-Elastizitätsmodul nach ISO 527 mit einer Prüfgeschwindigkeit von 1 mm/min im Bereich 1000 bis 3000 MPa,
  • teilkristalline Struktur,
  • möglichst hohe Schlagfestigkeit nach ISO 179 1eU, bevorzugt ohne Bruch,
  • Dehnung bei Streckspannung nach ISO 527 im Bereich 3 bis 8 %,
  • Härte bei Kugeldruck H358/30 im Bereich 120 bis 150 MPa und
  • Trennkraft nach DIN ISO 813 bei einem Kohäsionsriss zwischen Adapterelement und Ohrpassstück unter Zugbelastung größer als 8 N/mm.
FIG. 4 shows a cross section through a connectable to a handset of a hearing aid earpiece 1 and connectable with an earmold adapter element 7. For clarity, the earmold is in FIG. 4 not shown. The adapter element 7 is fitted in an opening of the earmold. Advantageously, earmold and adapter element 7 are produced by a two-component injection molding process, wherein the adapter element 7 is formed from a hard thermoplastic, such as polyamide (PA) or polybutylene terephthalate (PBT). The thermoplastic has the following properties:
  • Tensile modulus according to ISO 527 with a test speed of 1 mm / min in the range of 1000 to 3000 MPa,
  • semi-crystalline structure,
  • highest possible impact strength according to ISO 179 1eU, preferably without breakage,
  • Elongation at yield stress according to ISO 527 in the range 3 to 8%,
  • Hardness at ball pressure H358 / 30 in the range 120 to 150 MPa and
  • Release force according to DIN ISO 813 with a cohesion crack between adapter element and earmold under tensile load greater than 8 N / mm.

Das Ohrpassstück ist aus einem weichen, dem Gehörgang leicht anpassbaren Material, bevorzugt aus Liquid Silicone Rubber (LSR), hergestellt.The earmold is made of a soft material that is easily adaptable to the ear canal, preferably made of liquid silicone rubber (LSR).

Alternativ ist das Ohrpassstück samt Adapterelement 7 einstückig aus einem harten Kunststoff gebildet. Das Adapterelement 7 kann auch aus Metall sein und in das Ohrpassstück gepresst sein.Alternatively, the earmold including adapter element 7 is integrally formed from a hard plastic. The adapter element 7 can also be made of metal and pressed into the earmold.

Das Adapterelement 7 ist hohl mit einer Öffnung 9 zum Durchlass von Schallwellen und bevorzugt zylinderförmig ausgebildet. Das Adapterelement 7 nimmt in Form einer Schnappverbindung den Hörerstutzen 1 auf. Dazu besitzt der Hörerstutzen 1 einen kugelförmigen Abschnitt 2, der in eine korrespondierende, wulstförmige Vertiefung 8 des Adapterelements 7 kraftschlüssig greift. Durch die Kugelform des Abschnitts 2 kann der Hörerstutzen 1 wie ein Kugelgelenk im Adapterelement 7 bewegt werden. Die wulstförmige Vertiefung 8 bzw. umlaufende Rille an der Innenseite des Adapterelements 7 hat eine Krümmung, die in etwa gleich der Krümmung des kugelförmigen Abschnitts 2 des Hörerstutzens 1 ist. Figur 4 zeigt den Hörerstutzen 1 und das Adapeterelement 7 in einer zueinander gerade ausgerichteten Position.The adapter element 7 is hollow with an opening 9 for the passage of sound waves and preferably cylindrical. The adapter element 7 takes on the earpiece 1 in the form of a snap connection. For this purpose, the earpiece 1 has a spherical portion 2, which engages in a corresponding, bead-shaped recess 8 of the adapter member 7 frictionally. Due to the spherical shape of section 2, the earpiece 1 can be moved like a ball joint in the adapter element 7. The bead-shaped recess 8 or circumferential groove on the inside of the adapter element 7 has a curvature which is approximately equal to the curvature of the spherical portion 2 of the earpiece 1. FIG. 4 shows the earpiece 1 and the adapter element 7 in a straight aligned position.

Figur 5 zeigt einen Querschnitt durch das Adapterelement 7 und den in seiner Öffnung 9 angeordneten Hörerstutzen 1 gemäß Figur 4 in einer zueinander gekippten Position. Von einem nicht dargestellten Hörer abgegebene Schallwellen gelangen durch den Schallkanal 7 des Hörerstutzens 1 und durch die Öffnung 9 im Adapterelement 7 zum Trommelfell eines Hörgerätenutzers. Der kugelförmige Abschnitt 2 des Hörerstutzens 2 schnappt formschlüssig in eine dem Radius des kugelförmigen Abschnitts 2 angepasste, wulstförmige Vertiefung 8 des Adapterelements 7. Für einen sicheren, aber auch lösbaren Halt des Hörerstutzens 1 im Adapterelement 7 ist ein Hintergriff 5 von etwa 0,02 bis 0,10 mm erforderlich. Eine maximale Verkippung des Hörerstutzens 1 im Adapterelement 7 wird durch den konusförmigen Abschnitt 3 festgelegt. Der Hörerstutzen 1 geht so auf Anschlag 6 mit dem Adapterelement 7. Je nach Form des konusförmigen Abschnitts 3 kann der maximale Kippwinkel des Hörerstutzens 1 eingestellt werden. Theoretisch sind beliebige Winkel möglich. Durch den konusförmigen Abschnitt wird ein unbeabsichtigtes Lösen der Steckverbindung zwischen Hörerstutzen 1 und Adapterelement 7 bei einem übermäßigen Verkippen bzw. Auslenken des Hörerstutzens 1 verhindert. Der konusförmige Abschnitt 3 erleichtert auch das Einführen des Hörerstutzens 1 in das Adapterelement 7. FIG. 5 shows a cross section through the adapter element 7 and arranged in its opening 9 earphone 1 according to FIG. 4 in a mutually tilted position. Sound waves emitted by a receiver, not shown, pass through the sound channel 7 of the earpiece 1 and through the opening 9 in the adapter element 7 to the eardrum of a hearing device user. The spherical portion 2 of the earpiece 2 snaps positively into a radius of the spherical portion 2 adapted, bead-shaped recess 8 of the adapter element 7. For a secure, but also releasable hold of the earpiece 1 in the adapter element 7 is a rear handle 5 of about 0.02 to 0.10 mm required. A maximum tilt of the earphone 1 in the adapter element 7 is determined by the cone-shaped portion 3. The earpiece 1 goes so on stop 6 with the adapter element 7. Depending on the shape of the cone-shaped portion 3, the maximum tilt angle of the earpiece 1 can be adjusted. Theoretically, any angles are possible. Due to the conical section unintentional release of the connector between earpiece 1 and adapter element 7 is prevented in excessive tilting or deflecting the earpiece 1. The conical section 3 also facilitates the insertion of the earpiece 1 into the adapter element 7.

Alternativ oder auch ergänzend zum Einstellen der Steckkraft zwischen Hörerstutzen 1 und Adapterelement 7 durch die Größe des Hinterschnitts 5 kann die Steckkraft durch das Anbringen von Schlitzen 12 im kugelförmigen Abschnitt 2 des Hörerstutzens 1 angepasst werden. Die Anordnung der Schlitze 12 ist bevorzugt rotationssymmetrisch.Alternatively, or in addition to adjusting the insertion force between earpiece 1 and adapter element 7 by the size of the undercut 5, the insertion force can be adjusted by the attachment of slots 12 in the spherical portion 2 of the earphone 1. The arrangement of the slots 12 is preferably rotationally symmetrical.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Hörerstutzenreceiver connector
22
Kugelförmiger AbschnittSpherical section
33
Konischer AbschnittConical section
44
Schallkanal im Hörerstutzen 1Sound channel in the earpiece 1
55
Hintergriff zwischen Hörerstutzen 1 und Adapterelement 7Rear grip between earpiece 1 and adapter element 7
66
Anschlag des Hörerstutzens 1Stop of the earpiece 1
77
Adapterelementadapter element
88th
Vertiefung im Adapterelement 7Recess in the adapter element 7
99
Öffnung im Adapterelement 7Opening in the adapter element 7
1010
OhrpassstückEartip
1111
Hörerreceiver
1212
Schlitzslot
1313
Öffnung im Ohrpassstück 10Opening in the earmold 10
2121
Schnappelementsnap element
2222
Öffnungopening
2323
Lautsprecherspeaker
2424
Ohrstückearpiece

Claims (14)

Hörerstutzen (1) zum Einschnappen in ein Ohrpassstück (10),
gekennzeichnet durch: - einem kugelförmigen Abschnitt (2) und - einen konusförmigen Abschnitt (3), der an dem dem Ohrpassstück (10) zugewandeten Ende ausgebildet ist und der sich zum Ohrpassstück (10) hin verjüngt. Earpiece (1) for snapping into an earmold (10),
characterized by : a spherical section (2) and - A cone-shaped portion (3) which is formed at the eartip (10) facing the end and which tapers to the earmold (10). Hörerstutzen (1) nach Anspruch 2,
dadurch gekennzeichnet,
dass der konusförmige Abschnitt (3) derart ausgebildet ist,
dass er beim Kippen des Hörerstutzens (1) im Ohrpassstück (10) einen Anschlag bildet.Earpiece (1) according to claim 2,
characterized,
that the conical portion (3) is designed such
that it forms a stop when tilting the earpiece (1) in the earmold (10). Hörerstutzen (1) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der Hörerstutzen (1) rotationssymmetrisch ausgebildet ist.Earpiece (1) according to claim 1 or 2,
characterized,
that the earpiece (1) is rotationally symmetrical. Hörerstutzen (1) nach einem der Ansprüche 1 bis 3,
gekennzeichnet durch: einen Schallkanal (4), der axial und rotationssymmetrisch im Hörerstutzen (1) ausgebildet ist. Earpiece (1) according to one of claims 1 to 3,
characterized by : a sound channel (4) which is formed axially and rotationally symmetrical in the earpiece (1). Hörerstutzen (1) nach einem der vorigen Ansprüche,
dadurch gekennzeichnet,
dass der Hörerstutzen (1) einstückig aus Metall oder einem harten Kunststoff gebildet ist und mit einem Hörer (11) verschweißbar oder verklebbar ist.Earpiece (1) according to one of the preceding claims,
characterized,
that the receiver connector (1) is integrally formed from metal or a hard plastic, and having a receiver (11) is welded or glued. Hörerstutzen (1) nach einem der vorigen Ansprüche,
gekennzeichnet durch: im kugelförmigen Abschnitt (2) rotationssymmetrisch angeordnete Schlitze (12), durch deren Form und Anzahl eine Steckkraft im Ohrpassstück (10) einstellbar ist. Earpiece (1) according to one of the preceding claims,
characterized by : in the spherical portion (2) rotationally symmetrically arranged slots (12), through the shape and number of a plug-in force in the earmold (10) is adjustable. Im-Ohr-Hörer (11) für ein Hörgerät mit einem Hörerstutzen (1) nach einem der vorigen Ansprüche.In-ear earpiece (11) for a hearing aid with a earpiece (1) according to one of the preceding claims. Ohrpassstück (10) für ein Hörgerät,
gekennzeichnet durch: ein im Ohrpassstück (10) fest angeordnetes Adapterelement (7), in das ein Hörerstutzen (1) nach einem der Ansprüche 1 bis 6 lösbar fest steckbar ist, wobei das Adapterelement (7) eine umlaufende, wulstförmige Vertiefung (8) aufweist, mit der der kugelförmige Abschnitt (2) des Hörerstutzens (1) einen Formschluss bilden kann, so dass der Hörerstutzen (1) im Adapterelement (7) verkippbar bzw. auslenkbar gelagert ist. Earpiece (10) for a hearing aid,
characterized by : a in the earmold (10) fixedly arranged adapter element (7), in which a earpiece (1) according to one of claims 1 to 6 releasably fixed plugged, wherein the adapter element (7) has a circumferential, bead-shaped recess (8), with the the spherical section (2) of the earpiece (1) can form a positive connection, so that the earpiece (1) in the adapter element (7) is tiltably or deflectably mounted. Ohrpassstück (10) nach Anspruch 8,
dadurch gekennzeichnet,
dass das Adapterelement (7) als Teil einer Öffnung (13) des Ohrpassstückes (10) ausgebildet ist.An earmold (10) according to claim 8,
characterized,
in that the adapter element (7) is formed as part of an opening (13) of the earmold (10). Ohrpassstück (10) nach Anspruch 8 oder 9,
dadurch gekennzeichnet,
dass das Ohrpassstück (10) aus einem weichen, flexiblen Kunststoff gebildet ist.An earmold (10) according to claim 8 or 9,
characterized,
in that the earmold (10) is formed of a soft, flexible plastic. Ohrpassstück (10) nach einem der Ansprüche 8 bis 10,
dadurch gekennzeichnet,
dass das Adapterelement (7) aus Metall oder einem harten Kunststoff gebildet ist.An earmold (10) according to any one of claims 8 to 10,
characterized,
in that the adapter element (7) is formed from metal or a hard plastic. Ohrpassstück (10) nach einem der Ansprüche 8 bis 11, wobei das Ohrpassstück (10) mit einem Zweikomponentenspritzgussverfahren aus LSR / TPE und einem Thermoplast für das Adapterelement (7) hergestellt ist.The earmold (10) according to any one of claims 8 to 11, wherein the earmold (10) is made by a two-component injection molding process of LSR / TPE and a thermoplastic for the adapter element (7). Verwendung eines Thermoplasts zur Herstellung eines Ohrpassstückes (10) nach Anspruch 12 gekennzeichnet durch folgende Eigenschaften: - Zug-Elastizitätsmodul nach ISO 527 mit einer Prüfgeschwindigkeit von 1 mm/min im Bereich 1000 bis 3000 MPa, - Dehnung bei Streckspannung nach ISO 527 im Bereich 3 bis 8 %, - Härte bei Kugeldruck H358/30 im Bereich 120 bis 150 MPa und - Trennkraft nach DIN ISO 813 bei einem Kohäsionsriss zwischen Adapterelement und Ohrpassstück unter Zugbelastung größer als 8 N/mm. Use of a thermoplastic for producing an earmold (10) according to claim 12 characterized by the following properties: Tensile elastic modulus according to ISO 527 with a test speed of 1 mm / min in the range of 1000 to 3000 MPa, Elongation at yield stress according to ISO 527 in the range 3 to 8%, Hardness at ball pressure H358 / 30 in the range 120 to 150 MPa and - Release force according to DIN ISO 813 with a cohesion crack between adapter element and earmold under tensile load greater than 8 N / mm. Verwendung eines Thermoplasts nach Anspruch 13,
dadurch gekennzeichnet,
dass der Thermoplast Polyamid oder Polybutylenterephthalat ist.Use of a thermoplastic according to claim 13,
characterized,
that the thermoplastic polyamide or polybutylene terephthalate.
EP09169944.7A 2008-12-05 2009-09-10 Earpiece supports and ear fitting piece for a hearing aid and use of a thermoplast to create an ear fitting piece Active EP2194731B1 (en)

Applications Claiming Priority (1)

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DE102008060701.0A DE102008060701B4 (en) 2008-12-05 2008-12-05 Earpiece and earmold for a hearing aid and use of a thermoplastic for producing an earmold

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EP2194731A2 true EP2194731A2 (en) 2010-06-09
EP2194731A3 EP2194731A3 (en) 2011-02-09
EP2194731B1 EP2194731B1 (en) 2016-11-09

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ID=41805120

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US (1) US8083022B2 (en)
EP (1) EP2194731B1 (en)
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Also Published As

Publication number Publication date
DK2194731T3 (en) 2017-02-20
US8083022B2 (en) 2011-12-27
EP2194731A3 (en) 2011-02-09
EP2194731B1 (en) 2016-11-09
DE102008060701B4 (en) 2017-01-19
US20100139054A1 (en) 2010-06-10
DE102008060701A1 (en) 2010-06-17

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