WO2021063643A1 - Earphone comprising an ear-attachment support and a piezoelectric audio transducer attached to the support - Google Patents

Earphone comprising an ear-attachment support and a piezoelectric audio transducer attached to the support Download PDF

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Publication number
WO2021063643A1
WO2021063643A1 PCT/EP2020/075229 EP2020075229W WO2021063643A1 WO 2021063643 A1 WO2021063643 A1 WO 2021063643A1 EP 2020075229 W EP2020075229 W EP 2020075229W WO 2021063643 A1 WO2021063643 A1 WO 2021063643A1
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WO
WIPO (PCT)
Prior art keywords
ear
rod
pinna
earpiece
distal end
Prior art date
Application number
PCT/EP2020/075229
Other languages
French (fr)
Inventor
Benoît VAN LANDEGHEM
Original Assignee
Activmotion Sas
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Activmotion Sas filed Critical Activmotion Sas
Priority to EP20767559.6A priority Critical patent/EP4038898A1/en
Publication of WO2021063643A1 publication Critical patent/WO2021063643A1/en

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Definitions

  • TITLE Earphone including an ear mounting bracket and a piezoelectric audio transducer attached to the bracket
  • the present invention relates to an earphone comprising an ear mounting bracket and a piezoelectric audio transducer attached to the mounting bracket, said earphone being adapted to be attached to the ear in a position of use in which the bracket is attached to the auricle of the ear. ear and in which the transducer comes into contact with the internal face of the pinna, the piezoelectric transducer being adapted to flex to vibrate the pinna in response to the application of an electrical voltage, the vibration of the pinna in return producing acoustic waves.
  • This type of earphone is not designed to be inserted into the ear canal but to be attached to the pinna using the attachment bracket, so it is an extra-auricular earphone.
  • Document US2013 / 0136279 describes in this regard an earphone comprising a piezoelectric audio transducer fixed lengthwise between two side walls of a fixing support.
  • the mounting bracket is also designed to orient the piezoelectric transducer behind the ear, against the inner side of the pinna, when the speaker is in the use position. The transducer can thus vibrate the pinna of the ear to create sound waves without obstructing the user's ear canal.
  • the user of the earpiece can therefore hear both the sounds produced by the pinna of the ear as well as the surrounding sounds such as the noises of cars, the noises of voices, etc.
  • the low and medium frequencies are not or only slightly reproduced due to the low deflection amplitude of the piezoelectric transducer.
  • the piezoelectric transducer is used here flat against the inner face of the ear since the maximum deflection of the piezoelectric transducer is located at the center of the piezoelectric between the side walls of the mounting bracket.
  • the aim of the invention is therefore to provide an earphone which solves the aforementioned problems.
  • the invention relates to an earphone comprising an ear attachment support and a piezoelectric audio transducer attached to the attachment support, said earpiece being designed to be attached to the ear in a position of use in which the support is attached to the pinna and in which the transducer comes into contact with the inner surface of the pinna, the transducer piezoelectric being adapted to flex to vibrate the pinna in response to the application of an electrical voltage, the vibration of the pinna in return producing acoustic waves, characterized in that the piezoelectric transducer is present in the form of a rod comprising a proximal end and a distal end, the rod being fixed to the support by its proximal end and extends in the extension of the support from its proximal end to the distal end left free, and in that the rod is oriented so as to present only its distal end in contact with the internal face of the pinna of the ear when the earpiece is in the position of use.
  • the idea at the basis of the invention consists in using only the distal end of the rod left free in order to have a restricted point of contact with the internal face of the pinna of the ear.
  • the invention also consists in using the distal end of the rod left free in order to obtain a greater amplitude of deflection than with a transducer fixed by two attachment points.
  • This distal end left free is also particularly well suited to come into contact with areas of the inner face of the pinna that are difficult to access but optimal for the transmission of vibrations, such as the hollow of the groove from the helix to the ear. opposite of the helix root.
  • the rod that extends the mounting bracket provides a more ergonomic and discreet earpiece for pleasant use over time.
  • the fixing support comprises an anchoring head designed to be fixed to the pinna of the ear and a connecting branch which extends between the anchoring head and the proximal end of the rod;
  • the connecting branch is arranged to rest on the ear when the earpiece is in the position of use in the manner of a lever arm so as to tilt the rod against the internal face of the pinna of the ear to bring the distal end of the rod into contact with the ear;
  • the distal end of the rod includes a weight adapted to increase the rocking effect of the rod;
  • the connecting branch is elastic so as to bring the distal end of the rod back into contact with the ear when the earpiece is in the position of use;
  • the distal end of the rod comprises a substantially rounded projection which is arranged to be in contact with the internal face of the ear when the earpiece is in the position of use;
  • the mounting bracket and the transducer form an earring ring.
  • the invention also extends to an audio kit comprising two headphones as described above with an arch connecting the connecting branches of the headphones at the level of the proximal ends so that the arch extends behind the head when the headphones. are in the position of use.
  • Figure la is a schematic representation of an earphone according to the invention when the transducer is not turned on;
  • FIG.lb Figure lb shows schematically an earphone according to the invention when the transducer is deflected;
  • FIG.le the figure schematically shows an earphone according to the invention when the transducer is deflected;
  • FIG. 2a is a schematic representation of an earphone in the position of use according to the invention seen on the external face of the pinna of the ear;
  • FIG. 2b is a schematic representation of an earphone in the use position according to the invention seen on the internal face of the pinna of the ear;
  • FIG. 3 is a schematic representation of an earphone in the position of use according to the invention seen on the external face of the pinna of the ear, the internal face of the pinna and the part of the earpiece positioned in internal face of the flag being shown in dotted lines;
  • FIG. 4a is a schematic representation of an ear-loop type earpiece in the position of use according to the invention seen on the external face of the pinna of the ear;
  • FIG. 4b is a schematic representation of an ear-loop-type earpiece in the position of use according to the invention seen on the internal face of the pinna of the ear;
  • FIG. 5 is a schematic representation of an ear-loop type earpiece according to the invention.
  • FIG.6 Figure 6 shows a pair of headphones according to the invention. Description of the embodiment
  • FIGS. 1 to 5 represent an earphone 1 according to the invention of the extra-auricular type, also called supra-auricular, because the earpiece is not inserted into the ear canal but is attached to the pinna 2 of the ear.
  • the earpiece 1 is designed to vibrate the pinna 2 of the ear and produce acoustic waves in return.
  • the earpiece 1 comprises in particular an ear fixing support 3 and a piezoelectric audio transducer 4 fixed to the fixing support 3 so that the earpiece 1 can be fixed to the ear in a position of use visible in FIGS. 2a, 2b, 3, 4a, 4b and 5, in which the support is fixed to the pinna 2 of the ear, here in the external face 2a of the pinna, visible in Figure 2a and in which the transducer 4 is in contact of the internal face 2b of the pinna 2 of the ear, visible in FIG. 2b.
  • the piezoelectric transducer 4 here takes the form of a rod extending between a proximal end 4a and a distal end 4b.
  • the rod is fixed to the fixation support by the proximal end 4a and extends in the extension of the fixation support 3, the distal end 4b of the stem being left free, that is to say not fixed to the support of the fixing 3 so that the rod is fixed by a single fixing point.
  • the rod thus extends in the extension of the fixing support 3 from its proximal end 4a to the distal end 4b left free.
  • the rod is also oriented so as to present only its distal end 4b in contact with the internal face 2b of the pinna of the ear when the earpiece 1 is in the position of use.
  • the rod is particularly well suited to present only its distal end 4b in contact with the hollow of the CS1 groove of the helix on the inside of the pinna located opposite the root of the helix on the outside of the pinna, visible in figures 4b and 5.
  • the rod in response to the application of an electrical voltage, the rod flexed to vibrate the internal face 2b of the pinna 2 of the ear.
  • the repeated deflections, also called flexions, of the rod against the ear create vibrations that travel through the ear to produce sound waves.
  • the rod assumes an arcuate shape, the curvature of which extends over the entire length of the rod, from the proximal end 4a fixed to the fixing support 3 to the distal end 4b left free.
  • the distal end 4b of the rod has a rounded projection 4c, here a hemisphere perpendicular to the rod, which is arranged to be in contact with the internal face 2b of the pinna 2 of the ear when the earpiece 1 is in the use position.
  • the projection 4c here makes it possible to reduce the points of contact between the rod and the ear and to bring the distal end 4b of the pinna 2 of the ear closer to the proximal end 4a.
  • the transducer 4 also comprises a piezoelectric bimetallic strip shown in Figures la, lb le and 5, 1, formed of a blade 5 of deformable material, here made of brass, and a piezoelectric material 6 of crystal, the length of which is between 30mm and 120mm.
  • a bimetallic strip 80mm long, 10mm wide and 1.5mm thick the maximum deflection amplitude will be of the order of 1mm, which is sufficient amplitude to produce sounds in the midrange and midrange / bass. .
  • the bimetallic strip will for example comprise several superposed layers of a piezoelectric material 6.
  • a curved ear loop transducer makes it possible to lengthen the length of the piezoelectric material and thus ultimately to increase the amplitude of deflection of the rod.
  • PVDF Polyvinylidene Fluoride
  • MEMS Piezoelectric Microelectromechanical Systems
  • the fixing support 3 is for its part designed to be fixed to the ear in the position of use, visible in Figures 2a, 2b, 3, 4a and 4b, in which it positions the transducer behind the ear, against the inner face 2a of the pinna 2 of the ear.
  • the fixing support 3 comprises in particular an anchoring head 7 designed to be fixed to the pinna of the ear, here on the outer face 2a of the pinna 2 of the ear.
  • the anchoring head 7 is for example in the form of a deformable foam capable of being compressed in one of the cavities of the pinna of the ear such as the Concha cavity 8a or the Cymba cavity 8b, or else in the form of a suitable pliers to come pinch the root of the helix 8c or even in the form of an elastic branch capable of being wedged by deformation in the gutter of the helix 8d of the pinna 2 of the ear called Scapha.
  • the anchoring head 7 can also include a weight 9, visible in FIG. 5, the weight of which is here at least equal to the weight of the transducer 4.
  • the weight 9 makes it possible to give inertia to the transducer 4 in order to best restore the vibrations which it transmits to the internal face 2a of the pinna 2 of the ear and to stabilize the earpiece 1 in the position of use.
  • the fixing support 3 also comprises a connecting branch 10 which extends between the anchoring head 7 and the proximal end 4a of the rod 4.
  • the connecting branch 10 is arranged to bear on the ear, at the level of a bearing point PA in the manner of a lever arm, visible in dotted lines in FIG. 2a when the earpiece 1 is in position. of use, so as to tilt the rod against the inner face 2b of the pinna to bring the distal end 4b of the rod into contact with the ear.
  • Another weight 11 may be provided at the distal end of the rod, for example in the projection 4c, in order to increase the tilting effect of the rod.
  • the connecting branch 10 may also be elastic so as to bring the distal end of the rod into contact with the ear when the earphone is in the position of use.
  • the connecting branch 10 could also be in the form of a spring, visible in FIG. 5.
  • the invention also relates to an audio kit comprising a pair of headphones 1 according to the invention, visible in FIG. 6, comprises a hoop 12 connecting the connecting branches of the headphones at the level of the proximal ends so that the headband extends behind the head when the headphones are in the use position.
  • the arch 12 will play here a role equivalent to that of the weight 11 by increasing the tilting effect of the distal ends 4b of the rods against the internal face of the pinna of the ear.
  • the arch 12 will also stabilize the earphones in the position of use.
  • the user places the fixing support 3 in the position of use, for example by compressing the foam of the anchoring head 7 in the Concha cavity 8a of the pinna 2 of the ear.
  • the distal end 4b flexed to vibrate the internal face 2b of the pinna which in return produces acoustic waves.

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

The invention relates to an earphone (1) comprising an ear-attachment support (3) and a piezoelectric audio transducer (4) attached to the attachment support. The earphone is designed to be attached to the ear in a position of use in which the support is attached to the pinna (2) of the ear and in which the transducer comes into contact with the internal face (2b) of the pinna of the ear. The piezoelectric transducer is able to flex in order to cause the pinna of the ear to vibrate in response to the application of an electrical voltage, the vibration of the pinna of the ear in return producing sound waves. The piezoelectric transducer takes the form of a rod comprising a proximal end (4a) and a distal end (4b), the rod being attached to the support by its proximal end and extending in the continuation of the support from its proximal end as far as the distal end, which is left free and only in contact with the ear.

Description

DESCRIPTION DESCRIPTION
TITRE : Ecouteur comprenant un support de fixation auriculaire et un transducteur audio piézoélectrique fixé au support Domaine technique TITLE: Earphone including an ear mounting bracket and a piezoelectric audio transducer attached to the bracket Technical field
La présente invention concerne un écouteur comprenant un support de fixation auriculaire et un transducteur audio piézoélectrique fixé au support de fixation, ledit écouteur étant conçu pour être fixé à l'oreille dans une position d'utilisation dans laquelle le support est fixé au pavillon de l'oreille et dans laquelle le transducteur vient au contact de la face interne du pavillon de l'oreille, le transducteur piézoélectrique étant apte à fléchir pour faire vibrer le pavillon de l'oreille en réponse à l'application d'une tension électrique, la vibration du pavillon de l'oreille produisant en retour des ondes acoustiques. The present invention relates to an earphone comprising an ear mounting bracket and a piezoelectric audio transducer attached to the mounting bracket, said earphone being adapted to be attached to the ear in a position of use in which the bracket is attached to the auricle of the ear. ear and in which the transducer comes into contact with the internal face of the pinna, the piezoelectric transducer being adapted to flex to vibrate the pinna in response to the application of an electrical voltage, the vibration of the pinna in return producing acoustic waves.
Technique antérieure Prior art
Il existe aujourd'hui des écouteurs à transducteur audio piézoélectrique conçus pour produire des ondes acoustiques en faisant vibrer directement l'oreille. Today there are piezoelectric audio transducer headphones designed to produce sound waves by directly vibrating the ear.
Ce type d'écouteur n'est pas conçu pour être inséré dans le conduit auditif mais pour être fixé au pavillon de l'oreille à l'aide du support de fixation, il s'agit donc d'un écouteur extra-auriculaire . This type of earphone is not designed to be inserted into the ear canal but to be attached to the pinna using the attachment bracket, so it is an extra-auricular earphone.
Le document US2013/0136279 décrit à ce propos un écouteur comprenant un transducteur audio piézoélectrique fixé dans la longueur entre deux parois latérales d'un support de fixation. Le support de fixation est également conçu pour orienter le transducteur piézoélectrique derrière l'oreille, contre la face interne du pavillon de l'oreille, lorsque l'écouteur est en position d'utilisation. Le transducteur peut ainsi faire vibrer le pavillon de l'oreille pour créer des ondes acoustiques sans obstruer le canal auditif de l'utilisateur. Document US2013 / 0136279 describes in this regard an earphone comprising a piezoelectric audio transducer fixed lengthwise between two side walls of a fixing support. The mounting bracket is also designed to orient the piezoelectric transducer behind the ear, against the inner side of the pinna, when the speaker is in the use position. The transducer can thus vibrate the pinna of the ear to create sound waves without obstructing the user's ear canal.
L'utilisateur de l'écouteur peut donc entendre à la fois les sons produits par le pavillon de l'oreille ainsi que les sons environnants tels que des bruits de voitures, des bruits de voix, etc. The user of the earpiece can therefore hear both the sounds produced by the pinna of the ear as well as the surrounding sounds such as the noises of cars, the noises of voices, etc.
Toutefois, les basses et les moyennes fréquences ne sont pas ou peu restituées du fait de la faible amplitude de déflexion du transducteur piézoélectrique. However, the low and medium frequencies are not or only slightly reproduced due to the low deflection amplitude of the piezoelectric transducer.
De plus, le transducteur piézoélectrique est ici utilisé à plat contre la face interne de l'oreille puisque la déflexion maximale du transducteur piézoélectrique se situe au centre du piézoélectrique entre les parois latérales du support de fixation . In addition, the piezoelectric transducer is used here flat against the inner face of the ear since the maximum deflection of the piezoelectric transducer is located at the center of the piezoelectric between the side walls of the mounting bracket.
Or, le contact prolongé du transducteur à plat contre la face interne de l'oreille présente une gêne pour l'utilisateur. D'autres documents tels que EP3393109 et US2019/0052949 décrivent l'utilisation d'un écouteurs comprenant un transducteur disposé dans une cage fixée derrière l'oreille de sorte que le transducteur transmette des vibrations à la cage qui les transmet ensuite à l'oreille. However, the prolonged contact of the transducer flat against the internal face of the ear presents a discomfort for the user. Other documents such as EP3393109 and US2019 / 0052949 describe the use of an earphone comprising a transducer arranged in a cage fixed behind the ear so that the transducer transmits vibrations to the cage which then transmits them to the ear .
Exposé de l'invention Disclosure of the invention
Le but de l'invention est donc de proposer un écouteur qui résout les problèmes précités. The aim of the invention is therefore to provide an earphone which solves the aforementioned problems.
A cet effet, l'invention a pour objet un écouteur comprenant un support de fixation auriculaire et un transducteur audio piézoélectrique fixé au support de fixation, ledit écouteur étant conçu pour être fixé à l'oreille dans une position d'utilisation dans laquelle le support est fixé au pavillon de l'oreille et dans laquelle le transducteur vient au contact de la face interne du pavillon de l'oreille, le transducteur piézoélectrique étant apte à fléchir pour faire vibrer le pavillon de l'oreille en réponse à l'application d'une tension électrique, la vibration du pavillon de l'oreille produisant en retour des ondes acoustiques, caractérisé en ce que le transducteur piézoélectrique se présente sous la forme d'une tige comprenant une extrémité proximale et une extrémité distale, la tige étant fixée au support par son extrémité proximale et s'étend dans le prolongement du support depuis son extrémité proximale jusqu'à l'extrémité distale laissée libre, et en ce que la tige est orientée de sorte à présenter uniquement son extrémité distale en contact de la face interne du pavillon de l'oreille lorsque l'écouteur est en position d'utilisation . To this end, the invention relates to an earphone comprising an ear attachment support and a piezoelectric audio transducer attached to the attachment support, said earpiece being designed to be attached to the ear in a position of use in which the support is attached to the pinna and in which the transducer comes into contact with the inner surface of the pinna, the transducer piezoelectric being adapted to flex to vibrate the pinna in response to the application of an electrical voltage, the vibration of the pinna in return producing acoustic waves, characterized in that the piezoelectric transducer is present in the form of a rod comprising a proximal end and a distal end, the rod being fixed to the support by its proximal end and extends in the extension of the support from its proximal end to the distal end left free, and in that the rod is oriented so as to present only its distal end in contact with the internal face of the pinna of the ear when the earpiece is in the position of use.
L'idée à la base de l'invention consiste à utiliser seulement l'extrémité distale de la tige laissée libre afin d'avoir un point de contact restreint avec la face interne du pavillon de l'oreille. The idea at the basis of the invention consists in using only the distal end of the rod left free in order to have a restricted point of contact with the internal face of the pinna of the ear.
L'invention consiste également à utiliser l'extrémité distale de la tige laissée libre afin d'obtenir une amplitude de déflexion plus importante qu'avec un transducteur fixé par deux points de fixation. The invention also consists in using the distal end of the rod left free in order to obtain a greater amplitude of deflection than with a transducer fixed by two attachment points.
Cette extrémité distale laissée libre est également particulièrement bien adaptée pour venir au contact des zones de la face interne du pavillon de l'oreille difficiles d'accès mais optimales pour la transmission des vibrations, telle que le creux du sillon de l'hélix à l'opposé de la racine de l'hélix. This distal end left free is also particularly well suited to come into contact with areas of the inner face of the pinna that are difficult to access but optimal for the transmission of vibrations, such as the hollow of the groove from the helix to the ear. opposite of the helix root.
La tige qui prolonge le support de fixation permet d'obtenir un écouteur plus ergonomique et plus discret pour une utilisation agréable sur la durée. The rod that extends the mounting bracket provides a more ergonomic and discreet earpiece for pleasant use over time.
Le rendement électrique est également amélioré et la taille de l'écouteur réduite. L'écouteur selon l'invention comprend également les particularités suivantes : le support de fixation comprend un tête d'ancrage conçue pour être fixée au pavillon de l'oreille et une branche de liaison qui s'étend entre la tête d'ancrage et l'extrémité proximale de la tige ; Electrical efficiency is also improved and the size of the earpiece is reduced. The earphone according to the invention also comprises the following features: the fixing support comprises an anchoring head designed to be fixed to the pinna of the ear and a connecting branch which extends between the anchoring head and the proximal end of the rod;
- la branche de liaison est agencée pour prendre appui sur l'oreille lorsque l'écouteur est en position d'utilisation à la manière d'un bras de levier de sorte à faire basculer la tige contre la face interne du pavillon de l'oreille pour ramener l'extrémité distale de la tige au contact de l'oreille ; l'extrémité distale de la tige comprend une masselotte conçue pour augmenter l'effet de basculement de la tige ; la branche de liaison est élastique de sorte à ramener l'extrémité distale de la tige en contact avec l'oreille lorsque l'écouteur est en position d'utilisation ; l'extrémité distale de la tige comprend une saillie sensiblement arrondie qui est agencée pour être en contact avec la face interne de l'oreille lorsque l'écouteur est en position d'utilisation ; - the connecting branch is arranged to rest on the ear when the earpiece is in the position of use in the manner of a lever arm so as to tilt the rod against the internal face of the pinna of the ear to bring the distal end of the rod into contact with the ear; the distal end of the rod includes a weight adapted to increase the rocking effect of the rod; the connecting branch is elastic so as to bring the distal end of the rod back into contact with the ear when the earpiece is in the position of use; the distal end of the rod comprises a substantially rounded projection which is arranged to be in contact with the internal face of the ear when the earpiece is in the position of use;
- le support de fixation et le transducteur forment un anneau de boucle d'oreille. - the mounting bracket and the transducer form an earring ring.
L'invention s'étend également à un kit audio comprenant deux écouteurs tels que décrits ci-avant avec un arceau reliant les branches de liaison des écouteurs au niveau des extrémités proximales de sorte que l'arceau s'étend derrière la tête lorsque les écouteurs sont en position d'utilisation. The invention also extends to an audio kit comprising two headphones as described above with an arch connecting the connecting branches of the headphones at the level of the proximal ends so that the arch extends behind the head when the headphones. are in the position of use.
Description sommaire des dessins Brief description of the drawings
La présente invention sera mieux comprise et d'autres caractéristiques et avantages apparaîtront à la lecture de la description détaillée des modes de réalisation pris à titre d'exemples nullement limitatifs et illustrés par les dessins annexés dans lesquels : The present invention will be better understood and other characteristics and advantages will appear on reading the detailed description of the embodiments taken as such. examples which are in no way limiting and illustrated by the appended drawings in which:
[Fig.la] la figure la est une représentation schématique d'un écouteur selon l'invention lorsque le transducteur n'est pas mis sous tension ; [Fig.la] Figure la is a schematic representation of an earphone according to the invention when the transducer is not turned on;
[Fig.lb] la figure lb représente schématiquement un écouteur selon l'invention lorsque le transducteur est en déflexion ; [Fig.le] la figure le représente schématiquement un écouteur selon l'invention lorsque le transducteur est en déflexion ; [Fig.2a] la figure 2a est une représentation schématique d'un écouteur en position d'utilisation selon l'invention vu en face externe du pavillon de l'oreille ; [Fig.lb] Figure lb shows schematically an earphone according to the invention when the transducer is deflected; [Fig.le] the figure schematically shows an earphone according to the invention when the transducer is deflected; [Fig.2a] FIG. 2a is a schematic representation of an earphone in the position of use according to the invention seen on the external face of the pinna of the ear;
[Fig.2b] la figure 2b est une représentation schématique d'un écouteur en position d'utilisation selon l'invention vu en face interne du pavillon de l'oreille ; [Fig.2b] FIG. 2b is a schematic representation of an earphone in the use position according to the invention seen on the internal face of the pinna of the ear;
[Fig.3] la figure 3 est une représentation schématique d'un écouteur en position d'utilisation selon l'invention vu en face externe du pavillon de l'oreille, la face interne du pavillon et la partie de l'écouteur positionnée en face interne du pavillon étant représentées en pointillés ; [Fig.3] FIG. 3 is a schematic representation of an earphone in the position of use according to the invention seen on the external face of the pinna of the ear, the internal face of the pinna and the part of the earpiece positioned in internal face of the flag being shown in dotted lines;
[Fig.4a] la figure 4a est une représentation schématique d'un écouteur de type boucle d'oreille en position d'utilisation selon l'invention vu en face externe du pavillon de l'oreille ; [Fig.4a] FIG. 4a is a schematic representation of an ear-loop type earpiece in the position of use according to the invention seen on the external face of the pinna of the ear;
[Fig.4b] la figure 4b est une représentation schématique d'un écouteur de type boucle d'oreille en position d'utilisation selon l'invention vu en face interne du pavillon de l'oreille ; [Fig.4b] FIG. 4b is a schematic representation of an ear-loop-type earpiece in the position of use according to the invention seen on the internal face of the pinna of the ear;
[Fig.5] la figure 5 est une représentation schématique d'un écouteur de type boucle d'oreille selon l'invention ; [Fig.5] FIG. 5 is a schematic representation of an ear-loop type earpiece according to the invention;
[Fig.6] la figure 6 représente une paire d'écouteurs selon l'invention . Description du mode de réalisation [Fig.6] Figure 6 shows a pair of headphones according to the invention. Description of the embodiment
Les figures 1 à 5 représentent un écouteur 1 selon l'invention de type extra-auriculaire, également appelé supra-auriculaire, car l'écouteur n'est pas inséré dans le conduit auditif mais est fixé au pavillon 2 de l'oreille. FIGS. 1 to 5 represent an earphone 1 according to the invention of the extra-auricular type, also called supra-auricular, because the earpiece is not inserted into the ear canal but is attached to the pinna 2 of the ear.
L'écouteur 1 est conçu pour faire vibrer le pavillon 2 de l'oreille et produire en retour des ondes acoustiques. L'écouteur 1 comprend notamment un support de fixation 3 auriculaire et un transducteur 4 audio piézoélectrique fixé au support de fixation 3 de sorte que l'écouteur 1 peut être fixé à l'oreille dans une position d'utilisation visible sur les figures 2a, 2b, 3, 4a, 4b et 5, dans laquelle le support est fixé au pavillon 2 de l'oreille, ici dans la face externe 2a du pavillon de l'oreille, visible en figure 2a et dans laquelle le transducteur 4 est au contact de la face interne 2b du pavillon 2 de l'oreille, visible en figure 2b. The earpiece 1 is designed to vibrate the pinna 2 of the ear and produce acoustic waves in return. The earpiece 1 comprises in particular an ear fixing support 3 and a piezoelectric audio transducer 4 fixed to the fixing support 3 so that the earpiece 1 can be fixed to the ear in a position of use visible in FIGS. 2a, 2b, 3, 4a, 4b and 5, in which the support is fixed to the pinna 2 of the ear, here in the external face 2a of the pinna, visible in Figure 2a and in which the transducer 4 is in contact of the internal face 2b of the pinna 2 of the ear, visible in FIG. 2b.
Le transducteur 4 piézoélectrique prend ici la forme d'une tige s'étendant entre une extrémité proximale 4a et une extrémité distale 4b. The piezoelectric transducer 4 here takes the form of a rod extending between a proximal end 4a and a distal end 4b.
La tige est fixée au support de fixation par l'extrémité proximale 4a et s'étend dans le prolongement du support de fixation 3, l'extrémité distale 4b de tige étant laissée libre, c'est-à-dire non fixée au support de fixation 3 de sorte que la tige est fixée par un seul point de fixation. The rod is fixed to the fixation support by the proximal end 4a and extends in the extension of the fixation support 3, the distal end 4b of the stem being left free, that is to say not fixed to the support of the fixing 3 so that the rod is fixed by a single fixing point.
La tige s'étend ainsi dans le prolongement du support de fixation 3 depuis son extrémité proximale 4a jusqu'à l'extrémité distale 4b laissée libre. The rod thus extends in the extension of the fixing support 3 from its proximal end 4a to the distal end 4b left free.
La tige est également orientée de sorte à présenter uniquement son extrémité distale 4b en contact de la face interne 2b du pavillon de l'oreille lorsque l'écouteur 1 est en position d'utilisation . The rod is also oriented so as to present only its distal end 4b in contact with the internal face 2b of the pinna of the ear when the earpiece 1 is in the position of use.
La tige est particulièrement bien adaptée pour présenter uniquement son extrémité distale 4b au contact du creux du sillon CS1 de l'hélix en face interne du pavillon de l'oreille situé à l'opposé de la racine de l'hélix en face externe du pavillon de l'oreille, visible en figures 4b et 5. The rod is particularly well suited to present only its distal end 4b in contact with the hollow of the CS1 groove of the helix on the inside of the pinna located opposite the root of the helix on the outside of the pinna, visible in figures 4b and 5.
Ainsi, en réponse à l'application d'une tension électrique, la tige fléchie pour faire vibrer la face interne 2b du pavillon 2 de l'oreille. Thus, in response to the application of an electrical voltage, the rod flexed to vibrate the internal face 2b of the pinna 2 of the ear.
Les déflexions, également appelées flexions, répétées de la tige contre l'oreille créent des vibrations qui se propagent dans l'oreille pour produire des ondes acoustiques. The repeated deflections, also called flexions, of the rod against the ear create vibrations that travel through the ear to produce sound waves.
Lors de sa déflexion, la tige prend une forme arquée dont la courbure s'étend sur toute la longueur de la tige, depuis l'extrémité proximale 4a fixée au support de fixation 3 jusqu'à l'extrémité distale 4b laissée libre. During its deflection, the rod assumes an arcuate shape, the curvature of which extends over the entire length of the rod, from the proximal end 4a fixed to the fixing support 3 to the distal end 4b left free.
De manière avantageuse, l'extrémité distale 4b de la tige présente une saillie 4c arrondie, ici une demi-sphère perpendiculaire à la tige, qui est agencée pour être en contact avec la face interne 2b du pavillon 2 de l'oreille lorsque l'écouteur 1 est en position d'utilisation. Advantageously, the distal end 4b of the rod has a rounded projection 4c, here a hemisphere perpendicular to the rod, which is arranged to be in contact with the internal face 2b of the pinna 2 of the ear when the earpiece 1 is in the use position.
La saillie 4c permet ici de réduire les points de contact entre la tige et l'oreille et de rapprocher l'extrémité distale 4b du pavillon 2 de l'oreille par rapport à l'extrémité proximale 4a. The projection 4c here makes it possible to reduce the points of contact between the rod and the ear and to bring the distal end 4b of the pinna 2 of the ear closer to the proximal end 4a.
De nombreux avantages découlent de la réduction des points de contact avec l'oreille, tels que, la réduction de la puissance nécessaire pour transmettre les vibrations, l'amélioration du confort d'écoute et l'amélioration de la qualité du son en limitant les interférences de vibration dans l'oreille. Many benefits derive from the reduction of the contact points with the ear, such as, the reduction of the power required to transmit the vibrations, the improvement of the listening comfort and the improvement of the sound quality by limiting the vibration interference in the ear.
Le transducteur 4 comprend également un bilame piézoélectrique représenté sur les figures la, lb le et 5, 1, formé d'une lame 5 en matériau déformable, ici en laiton, et un matériau piézoélectrique 6 en cristal dont la longueur est comprise entre 30mm et 120mm. Pour un bilame de 80mm de long, 10mm de large et 1.5mm d'épaisseur, l'amplitude de déflexion maximale sera de l'ordre de 1mm, ce qui est une amplitude suffisante pour produire des sons dans le médium et le médium/grave. The transducer 4 also comprises a piezoelectric bimetallic strip shown in Figures la, lb le and 5, 1, formed of a blade 5 of deformable material, here made of brass, and a piezoelectric material 6 of crystal, the length of which is between 30mm and 120mm. For a bimetallic strip 80mm long, 10mm wide and 1.5mm thick, the maximum deflection amplitude will be of the order of 1mm, which is sufficient amplitude to produce sounds in the midrange and midrange / bass. .
Aussi, afin d'augmenter l'amplitude de déflexion au niveau de l'extrémité distale 4b, le bilame comprendra par exemple plusieurs couches en superposition d'un matériau piézoélectrique 6. Also, in order to increase the amplitude of deflection at the level of the distal end 4b, the bimetallic strip will for example comprise several superposed layers of a piezoelectric material 6.
On pourra également prévoir un transducteur 4 piézoélectrique courbé de sorte que le transducteur et le support de fixation 3 forment un anneau de boucle d'oreille, visible sur la figureIt is also possible to provide a piezoelectric transducer 4 curved so that the transducer and the fixing support 3 form an earring ring, visible in the figure.
5. 5.
Dans ce cas, la flexion de la tige permettra de transmettre des vibrations à l'oreille par des pincements répétés du pavillon de l'oreille. In this case, bending the rod will transmit vibrations to the ear by repeated pinching of the pinna.
L'utilisation d'un transducteur courbé en boucle d'oreille permet d'allonger la longueur du matériau piézoélectrique est donc d'augmenter in fine l'amplitude de déflexion de la tige. Pour une utilisation de transducteur courbé, on privilégiera l'utilisation du Polyfluorure de Vinylidène (PVDF) ou les Piezoelectric Microelectromechanical Systems (MEMS). The use of a curved ear loop transducer makes it possible to lengthen the length of the piezoelectric material and thus ultimately to increase the amplitude of deflection of the rod. For use with a curved transducer, the use of Polyvinylidene Fluoride (PVDF) or Piezoelectric Microelectromechanical Systems (MEMS) will be preferred.
Le support de fixation 3 est quant à lui conçu pour être fixé à l'oreille dans la position d'utilisation, visible sur les figures 2a, 2b, 3, 4a et 4b, dans laquelle il positionne le transducteur derrière l'oreille, contre la face interne 2a du pavillon 2 de l'oreille. The fixing support 3 is for its part designed to be fixed to the ear in the position of use, visible in Figures 2a, 2b, 3, 4a and 4b, in which it positions the transducer behind the ear, against the inner face 2a of the pinna 2 of the ear.
Le support de fixation 3 comprend notamment une tête d'ancrage 7 conçue pour être fixée au pavillon de l'oreille, ici en face externe 2a du pavillon 2 de l'oreille. The fixing support 3 comprises in particular an anchoring head 7 designed to be fixed to the pinna of the ear, here on the outer face 2a of the pinna 2 of the ear.
La tête d'ancrage 7 se présente par exemple sous la forme d'une mousse déformable apte être comprimée dans une des cavités du pavillon de l'oreille telle que la cavité Concha 8a ou la cavité Cymba 8b, ou bien sous la forme d'une pince apte à venir pincer la racine de l'hélix 8c ou bien encore sous la forme d'une branche élastique apte à venir se coincer par déformation dans la gouttière de l'hélix 8d du pavillon 2 de l'oreille appelée Scapha. The anchoring head 7 is for example in the form of a deformable foam capable of being compressed in one of the cavities of the pinna of the ear such as the Concha cavity 8a or the Cymba cavity 8b, or else in the form of a suitable pliers to come pinch the root of the helix 8c or even in the form of an elastic branch capable of being wedged by deformation in the gutter of the helix 8d of the pinna 2 of the ear called Scapha.
La tête d'ancrage 7 peut également comprendre une masselotte 9, visible sur la figure 5, dont le poids est ici au moins égal au poids du transducteur 4. The anchoring head 7 can also include a weight 9, visible in FIG. 5, the weight of which is here at least equal to the weight of the transducer 4.
La masselotte 9 permet de donner de l'inertie au transducteur 4 afin de restituer au mieux les vibrations qu'il transmet en face interne 2a du pavillon 2 de l'oreille et de stabiliser l'écouteur 1 en position d'utilisation. The weight 9 makes it possible to give inertia to the transducer 4 in order to best restore the vibrations which it transmits to the internal face 2a of the pinna 2 of the ear and to stabilize the earpiece 1 in the position of use.
Le support de fixation 3 comprend également une branche de liaison 10 qui s'étend entre la tête d'ancrage 7 et l'extrémité proximale 4a de la tige 4. The fixing support 3 also comprises a connecting branch 10 which extends between the anchoring head 7 and the proximal end 4a of the rod 4.
La branche de liaison 10 est agencée pour prendre appui sur l'oreille, au niveau d'un point d'appui PA à la manière d'un bras de levier, visible en pointillé sur la figure 2a lorsque l'écouteur 1 est en position d'utilisation, de sorte à faire basculer la tige contre la face interne 2b du pavillon de l'oreille pour ramener l'extrémité distale 4b de la tige au contact de l'oreille. The connecting branch 10 is arranged to bear on the ear, at the level of a bearing point PA in the manner of a lever arm, visible in dotted lines in FIG. 2a when the earpiece 1 is in position. of use, so as to tilt the rod against the inner face 2b of the pinna to bring the distal end 4b of the rod into contact with the ear.
Une autre masselotte 11 pourra être prévue à l'extrémité distale de la tige, par exemple dans la saillie 4c, afin d'augmenter l'effet de basculement de la tige. Another weight 11 may be provided at the distal end of the rod, for example in the projection 4c, in order to increase the tilting effect of the rod.
Ainsi, grâce au basculement de la tige contre la face interne 2b du pavillon 2 de l'oreille, l'effet rebond de la tige sur l'oreille est diminué et l'amplitude de déplacement de l'extrémité distale 4b de tige tend à être égale à l'amplitude des vibrations transmises au pavillon 2 de l'oreille. Thus, thanks to the tilting of the rod against the internal face 2b of the pinna 2 of the ear, the rebound effect of the rod on the ear is reduced and the amplitude of displacement of the distal end 4b of the rod tends to be equal to the amplitude of the vibrations transmitted to the pinna 2 of the ear.
La branche de liaison 10 pourra également être élastique de sorte à ramener l'extrémité distale de la tige en contact avec l'oreille lorsque l'écouteur est en position d'utilisation. La branche de liaison 10 pourra également se présenter sous la forme d'un ressort, visible sur la figure 5. The connecting branch 10 may also be elastic so as to bring the distal end of the rod into contact with the ear when the earphone is in the position of use. The connecting branch 10 could also be in the form of a spring, visible in FIG. 5.
Enfin, l'invention porte également sur un kit audio comprenant une paire d'écouteurs 1 selon l'invention, visible sur la figure 6, comprend un arceau 12 reliant les branches de liaison des écouteurs au niveau des extrémités proximales de sorte que l'arceau s'étend derrière la tête lorsque les écouteurs sont en position d'utilisation. Finally, the invention also relates to an audio kit comprising a pair of headphones 1 according to the invention, visible in FIG. 6, comprises a hoop 12 connecting the connecting branches of the headphones at the level of the proximal ends so that the headband extends behind the head when the headphones are in the use position.
L'arceau 12 jouera ici un rôle équivalent à celui de la masselotte 11 en augmentant l'effet de basculement des extrémités distales 4b des tiges contre la face interne du pavillon de l'oreille. The arch 12 will play here a role equivalent to that of the weight 11 by increasing the tilting effect of the distal ends 4b of the rods against the internal face of the pinna of the ear.
L'arceau 12 permettra également de stabiliser les écouteurs en position d'utilisation. Pour faire fonctionner l'écouteur 1, l'utilisateur place le support de fixation 3 en positon d'utilisation, par exemple en venant comprimer la mousse de la tête d'ancrage 7 dans la cavité Concha 8a du pavillon 2 de l'oreille. The arch 12 will also stabilize the earphones in the position of use. To operate the earpiece 1, the user places the fixing support 3 in the position of use, for example by compressing the foam of the anchoring head 7 in the Concha cavity 8a of the pinna 2 of the ear.
Une fois le transducteur 4 mis sous tension, l'extrémité distale 4b fléchie pour faire vibrer la face interne 2b du pavillon de l'oreille qui produit en retour des ondes acoustiques . Once the transducer 4 is energized, the distal end 4b flexed to vibrate the internal face 2b of the pinna which in return produces acoustic waves.

Claims

REVENDICATIONS
1. Ecouteur (1) comprenant un support de fixation (3) auriculaire et un transducteur (4) audio piézoélectrique fixé au support de fixation, ledit écouteur étant conçu pour être fixé à un pavillon (2) d'une oreille dans une position d'utilisation et dans laquelle le transducteur vient au contact de la face interne (2b) du pavillon de l'oreille, le transducteur piézoélectrique étant apte à fléchir pour faire vibrer le pavillon de l'oreille en réponse à l'application d'une tension électrique, la vibration du pavillon de l'oreille produisant en retour des ondes acoustiques, caractérisé en ce que le transducteur piézoélectrique se présente sous la forme d'une tige comprenant une extrémité proximale (4a) et une extrémité distale (4b), la tige étant fixée au support par son extrémité proximale et s'étend dans le prolongement du support depuis son extrémité proximale jusqu'à l'extrémité distale laissée libre, et en ce que la tige est orientée de sorte à présenter uniquement son extrémité distale en contact de la face interne du pavillon de l'oreille lorsque l'écouteur est en position d'utilisation . 1. An earphone (1) comprising an ear mounting bracket (3) and a piezoelectric audio transducer (4) attached to the mounting bracket, said earphone being adapted to be attached to a pinna (2) of an ear in a position of. 'use and in which the transducer comes into contact with the inner face (2b) of the pinna, the piezoelectric transducer being adapted to flex to vibrate the pinna in response to the application of a voltage electrical, the vibration of the pinna in return producing acoustic waves, characterized in that the piezoelectric transducer is in the form of a rod comprising a proximal end (4a) and a distal end (4b), the rod being fixed to the support by its proximal end and extends in the extension of the support from its proximal end to the distal end left free, and in that the rod is oriented so as to present only its distal end the in contact with the inner face of the pinna when the earpiece is in the use position.
2. Ecouteur selon la revendication 1, caractérisé en ce que le support de fixation comprend un tête d'ancrage (7) conçue pour être fixée au pavillon de l'oreille et une branche de liaison (10) qui s'étend entre la tête d'ancrage et l'extrémité proximale de la tige. 2. Earpiece according to claim 1, characterized in that the fixing support comprises an anchoring head (7) designed to be fixed to the pinna of the ear and a connecting branch (10) which extends between the head. anchor and the proximal end of the rod.
3. Ecouteur selon la revendication 2, caractérisé en ce que la branche de liaison est agencée pour prendre appui sur l'oreille lorsque l'écouteur est en position d'utilisation à la manière d'un bras de levier de sorte à faire basculer la tige contre la face interne du pavillon de l'oreille pour ramener l'extrémité distale de la tige au contact de l'oreille. 3. Earpiece according to claim 2, characterized in that the connecting branch is arranged to bear on the ear when the earpiece is in the position of use in the manner of a lever arm so as to tilt the earpiece. rod against the internal face of the roof of the ear to bring the distal end of the rod into contact with the ear.
4. Ecouteur selon la revendication 3, caractérisé en ce que l'extrémité distale de la tige comprend une masselotte (11) conçue pour augmenter l'effet de basculement de la tige. 4. Earpiece according to claim 3, characterized in that the distal end of the rod comprises a weight (11) designed to increase the tilting effect of the rod.
5. Ecouteur selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la branche de liaison est élastique de sorte à ramener l'extrémité distale de la tige en contact avec l'oreille lorsque l'écouteur est en position d'utilisation. 5. Earpiece according to any one of claims 2 to 4, characterized in that the connecting branch is elastic so as to bring the distal end of the rod into contact with the ear when the earpiece is in position of. use.
6. Ecouteur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extrémité distale de la tige comprend une saillie (4c) sensiblement arrondie qui est agencée pour être en contact avec la face interne de l'oreille lorsque l'écouteur est en position d'utilisation . 6. Earpiece according to any one of the preceding claims, characterized in that the distal end of the rod comprises a substantially rounded projection (4c) which is arranged to be in contact with the internal face of the ear when the earpiece is in the position of use.
7. Ecouteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le support de fixation et le transducteur forment un anneau de boucle d'oreille. 7. Earphone according to any one of the preceding claims, characterized in that the fixing support and the transducer form an earring ring.
8. Kit audio, caractérisé en ce qu'il comprend deux écouteurs (1) selon l'une quelconque des revendications 2 à 7 et un arceau (12) reliant les branches de liaison des écouteurs au niveau des extrémités proximales, l'arceau étant conçu pour s'étendre derrière la tête d'un utilisateur lorsque les écouteurs sont en position d'utilisation . 8. Audio kit, characterized in that it comprises two headphones (1) according to any one of claims 2 to 7 and a hoop (12) connecting the connecting branches of the headphones at the proximal ends, the hoop being designed to extend behind a user's head when the headphones are in the use position.
PCT/EP2020/075229 2019-09-30 2020-09-09 Earphone comprising an ear-attachment support and a piezoelectric audio transducer attached to the support WO2021063643A1 (en)

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FRFR1910827 2019-09-30
FR1910827A FR3101505B1 (en) 2019-09-30 2019-09-30 Earphone comprising an ear-mount bracket and a piezoelectric audio transducer attached to the bracket

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Citations (5)

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WO2001087007A1 (en) * 2000-05-09 2001-11-15 Temco Japan Co., Ltd. Receiver comprising bone-conduction loudspeaker
US20070025574A1 (en) * 2003-09-10 2007-02-01 New Transducers Limited Audio apparatus
US20130136279A1 (en) 2010-08-09 2013-05-30 Jeremy A Brown Personal Listening Device
EP3393109A1 (en) 2016-01-19 2018-10-24 Rohm Co., Ltd. Pen-type transceiver device
US20190052949A1 (en) 2016-02-23 2019-02-14 Sony Corporation Wearable device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001087007A1 (en) * 2000-05-09 2001-11-15 Temco Japan Co., Ltd. Receiver comprising bone-conduction loudspeaker
US20070025574A1 (en) * 2003-09-10 2007-02-01 New Transducers Limited Audio apparatus
US20130136279A1 (en) 2010-08-09 2013-05-30 Jeremy A Brown Personal Listening Device
EP3393109A1 (en) 2016-01-19 2018-10-24 Rohm Co., Ltd. Pen-type transceiver device
US20190052949A1 (en) 2016-02-23 2019-02-14 Sony Corporation Wearable device

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FR3101505A1 (en) 2021-04-02
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