Acoustic coupler

Details Acoustic coupler Acoustic coupler

H - Electricity

04

R

H04R 25/02 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2297659

An acoustic coupler is detachably secured to a receiver assembly for deep insertion into an individual's ear canal. The acoustic coupler provides a semirigid, thin walled, cylindrical coupling sleeve that is adapted to be attached over a cylindrical receiver assembly. A conforming sealing material is attached diametrically over the coupling sleeve to fit comfortably and to seal the individual's ear canal acoustically. The coupling sleeve is substantially concentric to the receiver assembly for a highly space efficient interface and a user friendly replacement method. Attachment of the acoustic coupler to the receiver assembly is accomplished by applying a minimal axial (push) force to secure the acoustic coupler to the receiver assembly. The coupler remains securely attached thereto, and can withstand considerable axial detachment (pull) forces without being dislodged within or outside the ear canal. Applying a rotational (twist) force with respect to the receiver housing detaches the acoustic coupler from the receiver housing. Because rotational movements are minimal during insertion or removal of the coupler from the individual's ear, accidental detachment is not possible.

L'invention porte sur un coupleur acoustique se fixant réversiblement à un récepteur, placé au fond du conduit auditif, et consistant en un manchon de couplage cylindrique semi-rigide à parois minces venant se fixer sur le récepteur cylindrique. Un matériau d'obturation adéquat, disposé diamétralement sur le manchon de couplage auquel il s'adapte confortablement, obture le conduit auditif vis à vis des sons. Le manchon de couplage, sensiblement concentrique avec le récepteur, constitue une interface de faibles dimensions et un procédé de remplacement d'utilisation aisée. La fixation au récepteur du coupleur se fait en lui appliquant une poussée axiale minimale qui en assure le verrouillage. Le coupleur reste fermement fixé et peut subir une importante force de traction sans se détacher ni tomber dans le conduit auditif ou en dehors, mais il se déverrouille lorsqu'on lui applique une faible force de rotation par rapport au récepteur. Le peu d'importance des mouvements de rotation lors de la mise en place ou du retrait du coupleur en interdit le déverrouillage accidentel.

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