EP4082224A1 - Excitateur audio et écouteur comprenant un tel excitateur audio - Google Patents
Excitateur audio et écouteur comprenant un tel excitateur audioInfo
- Publication number
- EP4082224A1 EP4082224A1 EP20851328.3A EP20851328A EP4082224A1 EP 4082224 A1 EP4082224 A1 EP 4082224A1 EP 20851328 A EP20851328 A EP 20851328A EP 4082224 A1 EP4082224 A1 EP 4082224A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- exciter
- contact element
- core
- support
- 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000006260 foam Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/066—Loudspeakers using the principle of inertia
-
- 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
- H04R1/1058—Manufacture or assembly
- H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/07—Suspension between moving magnetic core and housing
-
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
Definitions
- Audio exciter and earphone including such an audio exciter
- the invention relates to the field of audio exciters and more particularly to the field of headphones comprising such exciters.
- EP0517497 describes an earphone comprising an audio exciter designed to vibrate inside a user's ear to produce sound.
- the exciter typically comprises an electromagnetic coil and a magnetic circuit formed by a body comprising a magnetized core and a peripheral member extending around the core to form an air gap.
- the exciter also comprises a support frame in which the coil and the body are connected in suspension to one another so that the coil is able to move relative to the body along a longitudinal axis in the air gap around the core.
- the relative displacement of the coil with respect to the body makes it possible to transmit vibrations through the support frame.
- the support frame is itself attached to an earplug inserted into the user's ear canal so that vibrations from the support frame vibrate the earplug which in turn vibrates the air in the canal. auditory. If such an earphone makes it possible to obtain good audio quality, today there is a need to reduce the size of the earphones and in particular that of the exciters in order to make the earphone more discreet and more ergonomic,
- the object of the invention is therefore to remedy the aforementioned problems.
- the invention relates to an earphone comprising an audio exciter and a support on which the exciter is fixed, the audio exciter comprising an electromagnetic coil and a magnetic circuit formed of a body comprising a magnetized core and a peripheral element extending around the core to form an air gap, said exciter comprising a suspension connecting the coil to the body so that the coil is able to move relative to the body along a longitudinal axis in the air gap around the core, said exciter also comprising a contact element fixed to one end of the coil and covering an opening of the coil, said contact element comprising an outer face intended to be in contact with a surface to be vibrated and an inner face facing the core , characterized in that the suspension extends from the inner face of the contact element to the core to function by compression during a displacement of the b obine with respect to the body along the longitudinal axis, and in that the support is designed to be attached to the ear in an attachment position in which the outer face of the contact element is placed against the inner face of
- the idea at the base of the invention consists in integrating the suspension inside the coil, between the contact element and the magnetic body in order to reduce the size of the audio exciters.
- the presence of the suspension inside the coil eliminates the support frame usually used to connect the coil and the body in suspension.
- the vibrations produced by the relative movement of the coil with the body are concentrated only in the contact element and are not dispersed in a support frame.
- the invention is also particularly advantageous for producing sounds requiring a high amplitude of displacement of the coil relative to the magnet.
- the greater the amplitude of displacement the greater the space for accommodating the suspension between the core and the contact element, which makes it possible to have there a more voluminous suspension with greater elastic power.
- the earphone according to the invention can also have the following features:
- the contact element comprises at least one through hole from the outer face to the inner face;
- the outer face of the contact element is convex so that the contact element substantially forms a hemisphere
- the suspension is an elastomeric material
- the suspension is a spring
- an elastic means for centering and stabilizing the coil relative to the body in the longitudinal axis, said elastic means extending around the coil, from a portion of the contact element which projects transversely towards the outside the coil at an upper edge of the peripheral body member;
- the body of the magnetic circuit can also be fixed to the support so that in the position of use the body is relatively fixed relative to the support when the contact element and the coil move along the longitudinal axis;
- An intermediate element with elastic properties may also be placed between the support and the exciter; the coil and the contact element are able to move along the longitudinal axis AA 'both with respect to the body and with respect to the support when the exciter vibrates.
- FIG 1 Figure 1 schematically shows an audio exciter according to the invention
- FIG. 2 schematically represents an earphone according to the invention comprising an audio exciter in contact with a surface to be vibrated.
- FIG. 3 schematically represents an earphone comprising an audio exciter according to the invention arranged in the position of use on an ear.
- FIG. 1 represents an audio exciter 1 according to the invention designed to produce sound by vibrating a surface S.
- surface S to be vibrated is meant any type of surface such as the shell of a mobile phone, a speaker membrane or even an ear.
- the audio exciter 1 typically comprises an electromagnetic coil 2 and a magnetic circuit formed by a body 3 comprising a magnetized core 3a and a peripheral element 3b extending around the core to form an air gap.
- magnetic core according to the invention can be understood as being simply a magnet 3a 'or else as a magnet 3a' on which is mounted a field plate 3a '' capable of concentrating the field lines of the magnetic field, as shown. in figure 1.
- a contact element 4 is also fixed on one end 2a of the coil and covers the opening 2b of the coil 2.
- the contact element 4 has an outer face 5 intended to be in contact with the surface S to be vibrated and an inner face 6 facing the core 3a of the body 3.
- the contact element 4 is preferably designed to limit the vibrations of the air produced during its movement. In fact, with this arrangement, only the contact surface is made to vibrate and not directly the surrounding air.
- the contact element 4 comprises at least one through hole 7 which extends from the exterior face 5 to the interior face 6 so as to allow air to circulate from the interior to the exterior of the coil 2. .
- the inner face 6 will preferably be flat, while the outer face 5 of the contact element 4 will preferably be convex so that the contact element 4 substantially forms a hemisphere.
- the half-sphere makes it possible, on the one hand, to reduce the contact surface with the surface S to be made to vibrate and, on the other hand, to concentrate the vibrations on a precise point of the surface S to be made to vibrate.
- the hemisphere will for example be hollow so as to optimize the passage of air between the two outer 5 and inner 6 faces.
- the hemisphere extends from the upper edges of the end 2a of the coil 2, but the hemisphere can also extend from the outer edges of the peripheral member 3b.
- the inner face 5 will therefore preferably be flat and drilled, while the outer face 6 will preferably be convex and drilled with a gap between the two inner 6 and outer 5 faces.
- the contact element 4 may also be in the form of a flat washer resting on the upper edges of the coil or else in the form of a plate dotted with holes with the outer 5 and inner 6 faces flat.
- the exciter 1 according to the invention also comprises a suspension 8 connecting in suspension the coil 2 to the body 3 so that the coil 2 is able to move along a longitudinal axis AA 'in the air gap around the core 3a.
- the suspension 8 not only makes it possible to create a return force capable of bringing the coil 2 and the body 3 back to a position of equilibrium but also to center the coil 2 around the core 3a in order to avoid friction between the coil 2 and body 3.
- the suspension 8 is here designed to extend from the inner face 5 of the contact element to the core 3a.
- the suspension 8 can operate by compression inside the coil 2 during a displacement of the coil 2 relative to the body 3 along the longitudinal axis AA '.
- the displacement by compression along the longitudinal axis AA ' makes it possible to have a large amplitude of displacement between the coil 2 and the body 3 which makes it possible to reproduce sounds over a larger frequency range.
- the exciter 1 according to the invention can also comprise an elastic means 9 designed to center and stabilize the coil 2 with respect to the body 3 in the longitudinal axis AA '.
- the elastic means 9 extends here around the coil 2, from a portion 4a of the contact element which projects transversely outwardly from the coil 2 to an upper edge 3b 'of the peripheral element 3b of the body 3.
- the suspension and / or the elastic means may for example be chosen from a foam (polyurethane, etc.) or a spring.
- the invention also extends to an earpiece 10, as shown in Figures 2 and 3.
- the earphone here comprises a support 11 on which is fixed an audio exciter 1 according to the invention.
- the support 11 is designed to be fixed to the ear in a fixing position in which the outer face 5 of the contact element 4 is placed against the inner face 12 of the ear, and more precisely in the hollow of the groove. of the helix opposite the root of the helix on the external side of the pinna.
- an intermediate element 13 with elastic properties which is sandwiched between the support 11 and the exciter 1 can also be integrated into the earpiece 10.
- This intermediate element 13 may take the form of a foam or else of a spring in the same way as for the suspension 8. Thanks to this intermediate element 13, the body 3 of the magnetic circuit will be able to move relatively with respect to the support 11.
- the body 3 will therefore be able to resonate freely and more particularly in the low frequencies because of its greater mass than that of the coil 2.
- the coil 2 and the contact element 4 are able to move along the longitudinal axis AA' at the times relative to body 3 and relative to support 11 when the exciter vibrates.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1915541A FR3105693B1 (fr) | 2019-12-24 | 2019-12-24 | Excitateur audio et écouteur comprenant un tel excitateur audio |
PCT/FR2020/052607 WO2021130452A1 (fr) | 2019-12-24 | 2020-12-22 | Excitateur audio et écouteur comprenant un tel excitateur audio |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4082224A1 true EP4082224A1 (fr) | 2022-11-02 |
Family
ID=70228187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20851328.3A Pending EP4082224A1 (fr) | 2019-12-24 | 2020-12-22 | Excitateur audio et écouteur comprenant un tel excitateur audio |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4082224A1 (fr) |
FR (1) | FR3105693B1 (fr) |
WO (1) | WO2021130452A1 (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641345A (en) * | 1983-10-28 | 1987-02-03 | Pioneer Electronic Corporation | Body-sensible acoustic device |
JPH0815357B2 (ja) * | 1986-09-18 | 1996-02-14 | ソニー株式会社 | ヘツドホン |
JP3235865B2 (ja) | 1991-06-03 | 2001-12-04 | パイオニア株式会社 | イヤースピーカ |
KR20040079709A (ko) * | 2003-03-10 | 2004-09-16 | 에스텍 주식회사 | 공간효율성 댐퍼를 구비하는 스피커 |
-
2019
- 2019-12-24 FR FR1915541A patent/FR3105693B1/fr active Active
-
2020
- 2020-12-22 WO PCT/FR2020/052607 patent/WO2021130452A1/fr unknown
- 2020-12-22 EP EP20851328.3A patent/EP4082224A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3105693A1 (fr) | 2021-06-25 |
WO2021130452A1 (fr) | 2021-07-01 |
FR3105693B1 (fr) | 2022-02-11 |
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