FR3122023B1 - Haut-parleur micrométrique - Google Patents

Haut-parleur micrométrique Download PDF

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Publication number
FR3122023B1
FR3122023B1 FR2103908A FR2103908A FR3122023B1 FR 3122023 B1 FR3122023 B1 FR 3122023B1 FR 2103908 A FR2103908 A FR 2103908A FR 2103908 A FR2103908 A FR 2103908A FR 3122023 B1 FR3122023 B1 FR 3122023B1
Authority
FR
France
Prior art keywords
blades
mechanical
loudspeaker
micrometric
frame
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.)
Active
Application number
FR2103908A
Other languages
English (en)
Other versions
FR3122023A1 (fr
Inventor
Romain Liechti
Fabrice Casset
Thierry Hilt
Stephane Durand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Le Mans Universite
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Centre National de la Recherche Scientifique CNRS
Commissariat a lEnergie Atomique CEA
Le Mans Universite
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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 Centre National de la Recherche Scientifique CNRS, Commissariat a lEnergie Atomique CEA, Le Mans Universite, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA filed Critical Centre National de la Recherche Scientifique CNRS
Priority to FR2103908A priority Critical patent/FR3122023B1/fr
Priority to EP22168299.0A priority patent/EP4075422B1/fr
Priority to US17/721,950 priority patent/US11785391B2/en
Publication of FR3122023A1 publication Critical patent/FR3122023A1/fr
Application granted granted Critical
Publication of FR3122023B1 publication Critical patent/FR3122023B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
    • G10K9/125—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means with a plurality of active elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0629—Square array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/003—Mems transducers or their use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
    • H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

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

Abstract

Titre : Haut-parleur micrométrique L’invention concerne un haut-parleur micrométrique (1) comprenant : Un cadre (11), Un transducteur électromécanique, et Un transducteur mécano-acoustique comprenant une plaque rigide (131) montée mobile dans le cadre, le transducteur électromécanique comprend deux actionneurs piézoélectriques (121a, 121b) et deux lames élastiques (122a, 122b), le cadre comprend une traverse centrale (111) depuis laquelle s’étendent les deux lames jusqu’à mettre en prise deux rebords latéraux de couplage (132a, 132b) du transducteur mécano-acoustique, le transducteur mécano-acoustique comprend deux ressorts de linéarisation (133a, 133b) s’étendant chacun depuis un des rebords latéraux jusqu’à la plaque rigide, pour permettre, lors d’une déformation des lames, un déplacement des deux rebords latéraux vers la traverse centrale et réduire les contraintes longitudinales appliquées aux lames lors de leur déformation du fait de leur configuration de flexion « encastrée-guidée ». Le haut-parleur présente des performances satisfaisantes, notamment en termes de largeur de bande passante et/ou de niveau de pression produit. Figure pour l’abrégé : Fig. 6
FR2103908A 2021-04-15 2021-04-15 Haut-parleur micrométrique Active FR3122023B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2103908A FR3122023B1 (fr) 2021-04-15 2021-04-15 Haut-parleur micrométrique
EP22168299.0A EP4075422B1 (fr) 2021-04-15 2022-04-14 Haut-parleur micrométrique
US17/721,950 US11785391B2 (en) 2021-04-15 2022-04-15 Micrometric loudspeaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2103908A FR3122023B1 (fr) 2021-04-15 2021-04-15 Haut-parleur micrométrique
FR2103908 2021-04-15

Publications (2)

Publication Number Publication Date
FR3122023A1 FR3122023A1 (fr) 2022-10-21
FR3122023B1 true FR3122023B1 (fr) 2023-12-29

Family

ID=76034832

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2103908A Active FR3122023B1 (fr) 2021-04-15 2021-04-15 Haut-parleur micrométrique

Country Status (3)

Country Link
US (1) US11785391B2 (fr)
EP (1) EP4075422B1 (fr)
FR (1) FR3122023B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2251545A1 (en) * 2022-12-22 2024-04-16 Myvox Ab A mems-based micro speaker device and system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5579627B2 (ja) * 2009-05-25 2014-08-27 パナソニック株式会社 圧電型音響変換器
CN103477656B (zh) * 2012-02-15 2018-04-27 松下知识产权经营株式会社 扬声器
DE102014106753B4 (de) 2014-05-14 2022-08-11 USound GmbH MEMS-Lautsprecher mit Aktuatorstruktur und davon beabstandeter Membran
FR3090613B1 (fr) 2018-12-20 2021-01-22 Commissariat Energie Atomique Articulation pour systemes micro et nanoelectromecaniques a deplacement hors-plan offrant une non-linearite reduite
CN111918179B (zh) * 2020-07-10 2021-07-09 瑞声科技（南京）有限公司 发声装置及具有其的电子设备

Also Published As

Publication number Publication date
FR3122023A1 (fr) 2022-10-21
EP4075422A1 (fr) 2022-10-19
US20220337954A1 (en) 2022-10-20
EP4075422B1 (fr) 2024-07-17
US11785391B2 (en) 2023-10-10

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