EP3892011B1 - Unendliches leitblech mit geringer steifigkeit - Google Patents

Unendliches leitblech mit geringer steifigkeit Download PDF

Info

Publication number
EP3892011B1
EP3892011B1 EP19809862.6A EP19809862A EP3892011B1 EP 3892011 B1 EP3892011 B1 EP 3892011B1 EP 19809862 A EP19809862 A EP 19809862A EP 3892011 B1 EP3892011 B1 EP 3892011B1
Authority
EP
European Patent Office
Prior art keywords
cam
membrane
axis
box
force
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
EP19809862.6A
Other languages
English (en)
French (fr)
Other versions
EP3892011A1 (de
Inventor
Eduardo MENDES
Bérenger Roig
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.)
Devialet SA
Original Assignee
Devialet SA
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 Devialet SA filed Critical Devialet SA
Publication of EP3892011A1 publication Critical patent/EP3892011A1/de
Application granted granted Critical
Publication of EP3892011B1 publication Critical patent/EP3892011B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • 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
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—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

Definitions

  • the present invention comprises a closed acoustic enclosure of the type comprising a casing and a loudspeaker comprising a membrane movable relative to the casing, the casing and the membrane delimiting an essentially closed chamber; the loudspeaker comprising an electrically controlled motor for actuating the mobile membrane with respect to the box, the enclosure further comprising a mechanism for axially biasing the membrane away from its median position of rest against the pressure force exerted by the gas contained in the box on the membrane.
  • the sound produced by a loudspeaker is obtained by the displacement of a mobile membrane.
  • This membrane has its own resonant frequency linked to its mass and the stiffness of its suspensions which give it mobility.
  • the force required to move the membrane at constant amplitude oscillatory acceleration is quasi-constant.
  • the force required to move the membrane at constant amplitude oscillatory acceleration increases sharply as the frequency of the oscillatory movements decreases due to the preponderant part of the stiffness of the suspensions. relative to mass.
  • loudspeaker designers have sought to obtain a mechanical resonance frequency of the loudspeaker membrane, with its suspensions, as small as possible because this resonance frequency fixes the low frequency of use of the loudspeaker.
  • the acoustic performance of a loudspeaker in the open air is reduced due to the acoustic short circuit linked to the reciprocal cancellation of the "front" and "rear” waves produced by the loudspeaker membrane.
  • the loudspeakers are most often placed in boxes so that only a single wave produced by the membrane, for example the front wave produced by the front of the membrane, is diffused. The opposite wave is confined within the enclosure.
  • the mechanical resonance frequency of the membrane increases as the internal volume of the box decreases. This is due to the compression/decompression of the air inside the box during the oscillatory movements of the membrane. Indeed, the compression/decompression of the air behaves like a non-linear spring whose stiffness depends on the volume of the box and the amplitude of the displacement of the membrane.
  • loudspeaker manufacturers are forced to use large-sized loudspeakers in order to obtain sound reproduction at low frequencies at high sound volumes because the displacement of the membrane will be all the higher as the frequency of the sound to be reproduced will be low.
  • the document US 2,810,021 describes a loudspeaker in which the membrane is linked to a rod axially biased by helical springs arranged radially and connected to the axial rod by an elastically deformable plate in the form of a cup.
  • US 7,885,418 B1 discloses a very small volume enclosure incorporating a large surface area, shallow and lightweight acoustic diaphragm assembly capable of a natural resonant frequency of a few Hertz. This is achieved by incorporating a vacuum chamber in conjunction with a chamber containing compressed gas or vapor which acts against a moving pressure boundary of variable area mechanically coupled to the acoustic radiation diaphragm.
  • the object of the invention is to provide an acoustic enclosure in which the production of the anti-spring mechanism is facilitated, and in which the value of the force applied by this mechanism is well controlled regardless of the position of the membrane.
  • the subject of the invention is an acoustic loudspeaker according to claim 1 of the aforementioned type, characterized in that the mechanism comprises a cam movable with respect to the box along an axis of displacement of the cam under the displacement action of the membrane and at least one cam follower biased transversely to the cam by at least one spring and resting on the cam, the cam having at least one cam surface capable of converting the transverse force of the or each spring into an axial force on the cam whose the intensity varies according to the position of the cam relative to the box.
  • the loudspeaker 10 illustrated in the figure 1 is a closed enclosure. It comprises a box 12 delimiting an essentially closed chamber 14 separated from the external environment.
  • the box 12 comprises rigid and impermeable walls connected to each other.
  • a calibrated decompression vent 16 is provided through a wall to allow pressure balance between the inside and the outside of the enclosure during slow variations in atmospheric pressure. This decompression vent 16 is small enough to prevent the circulation of air from and towards the chamber 14 during the operation of the enclosure and in particular during the movements of the loudspeaker membrane.
  • the enclosure comprises a loudspeaker 20 comprising a membrane 22 movable through a hole in the box.
  • the membrane 22 locally delimits the chamber 14 and seals the latter.
  • the membrane 12 is connected to the side walls of the box by a deformable seal 24.
  • the loudspeaker comprises a motor 30 with electrical control for actuating the membrane 22 for its movement along an X-X axis.
  • the motor essentially comprises an electromagnet, having a carcass 32 secured to the casing 12 by connecting arms 34 and a winding 36 carried by a mobile assembly 38 at the end of which is carried the membrane 22.
  • the winding 36 is connected, as known per se, to terminals 39 for connecting the acoustic enclosure to an amplifier.
  • the movable assembly 38 is guided relative to the box 12 for movement along the X-X axis by an elastic joint formed of an elastic and breathable corrugated textile plate 41 known as a spider.
  • This textile structure defines air circulation passages to balance the pressures on either side of the spider.
  • the enclosure 10 comprises an anti-spring mechanism 50 acting on the membrane 22 and capable of compensating for the effect of variations in air pressure in the chamber 14 during the movements of the membrane 22.
  • the anti-spring mechanism 50 is an elastic mechanism for axially biasing the membrane 22 away from its median rest position against the pressure force exerted by the air contained in the box on the membrane, that is to say in the direction of movement of the membrane.
  • the mechanism 50 comprises a rod 52, extending along the axis XX, connected, at one end, to the movable assembly 38 carrying the membrane 22 and, at its other end, to a cam 54 movable relative to box 12. Rod 52 is thus driven by movable assembly 38.
  • the rod 52 passes axially through the actuating motor 30 of the loudspeaker.
  • Cam 54 is generally of X-X axis revolution. It has a continuous cam surface of revolution forming in a plane passing through the axis X-X two diametrically opposed cam surfaces 56A, 56B. These cam surfaces are axisymmetric with respect to the X-X axis.
  • the cam 54 is clamped between two cam followers 58A, 58B biased transversely to the X-X axis by springs 60A, 60B maintaining the cam followers in contact with the cam surfaces 56A, 56B.
  • the cam followers 58A, 58B each advantageously comprise a rotary element 62A, 62B such as a roller capable of rolling along the length of the cam surfaces 56A, 56B.
  • the axis of rotation of the rollers extends perpendicular to the X-X axis.
  • the rollers 62A, 62B have a diabolo shape, with a concave surface complementary to the cylindrical surface of the cam 54.
  • Springs 60A, 60B extend transversely of the cam surfaces. They are coaxial with the Y-Y axis secant to the X-X axis. These springs, kept constantly compressed and are supported at one end on the box 12 and at their other end on the axis of the rotary rollers 62A, 62B forming the cam followers.
  • spider 70 provided between the cam 54 and the actuating motor 32 ensures the axial guidance of the rod 52 and the cam 54 to ensure a movement of these along the axis X.X.
  • spider 70 is permeable to gas.
  • the cam surfaces 56A, 56B have in the middle part, along the length of the X-X axis and in section along the path plane of the rollers, a range 72 whose distance from the X-X axis of movement of the cam is locally constant along the X-X axis of cam movement.
  • This range 72 extends over a few tenths of a millimeter along the X-X axis.
  • This middle range 72 is positioned on the cam so that each roller presses on this middle range when the membrane 22 is in the rest position, that is to say in a middle position between the two extreme positions that can be occupied under the motor action 30.
  • the cam surfaces 56A, 56B have areas 74 that are inclined relative to the axis XX.
  • the inclination of these ranges increases as they deviate along the axis XX on either side of this median range so that when the cam followers deviate from the median zone, the angle between the axis XX and the normal to the point of contact of the roller on the cam surface increases so that the force applied to the membrane increases.
  • the distance between the X-X axis and a point on the cam surface decreases away from the middle zone 72.
  • the cam surfaces converge away from the middle zone.
  • the loudspeaker shown in the figure 1 works as follows.
  • membrane 22 moves as known per se.
  • cam 54 driven by the membrane, moves axially relative to cam followers 58A, 58B.
  • the cam followers then exert a force directed along the Y-Y axis towards the X-X axis on the cam surfaces 56A, 56B.
  • These cam surfaces being inclined and maintained along the Y-Y axis between the two rollers, the cam surface is subjected to an axial force, which is applied to the membrane 22 through the rod 52.
  • cam 54 is moved away from the membrane 22. Under the action of the springs 60A, 60B acting at the through cam followers 62A, 62B, cam 54 is biased in its direction of travel.
  • the overpressure in the enclosure 14 acts on the membrane 22 to pull the membrane 22 out of the casing 12.
  • the cam 54 produces a restoring force for the membrane 22 inside the casing.
  • the shape of the cam 54 is adapted so that the sum of the two forces produced by the cam and that resulting from the overpressure in the chamber 14 cancels out practically at any point of the cam or is equal to a desired value at all. cam point.
  • the shape of the cam surface makes it possible to transform part of a force F Rz exerted by the springs 60A and 60B along the axis YY into a force F Rx along the axis XX.
  • the surface of the cam having a range 72 whose distance from the axis XX of movement of the cam is locally constant along the axis XX of cam travel.
  • the cam surface is such that the force F Rx along the axis XX applied by the cam to the membrane 22 via the rod 52 is zero.
  • the rollers bear on the middle range of the surface of the cam 54 which is parallel to the axis XX.
  • the membrane 22 undergoes, during its movement, a force F Rx , via the rod 52, along the axis XX in the same direction as that of the movement. .
  • the magnitude of this force depends on the angle formed by the surface of the cam 54 with the axis XX at the point of contact of the rollers 62A, 62B.
  • the stiffness K R ( x ) is negative because it produces a force in the same direction as the displacement of the membrane.
  • the force F T opposes the displacement of the mobile assembly Force towards the right with positive displacement of the moving assembly to the left.
  • Cam profile 4 is given by the function expressing y BC as a function of x BC .
  • K min ⁇ K m ( x ) + K air ( x ) makes it possible to choose the value of the mechanical resonance frequency F AR of the loudspeaker placed in a closed box.
  • F AR the mechanical resonance frequency
  • the value of F AR will be between 30 Hz and 50 Hz.
  • the additional mass M AR provided by the anti-spring mechanism is reduced as much as possible in order to minimize the force, and therefore the current, necessary to move the membrane above above the resonant frequency.
  • the cam 54 is not connected to the movable assembly by a rod 52.
  • the cam 54 is connected to a movable wall 102, separating in the box 12, the closed chamber 14 in a front chamber 104 partially delimited by the membrane 22 and the movable wall 102 and a rear chamber 106 delimited by the walls of the box 12 and by the movable wall 102.
  • the movable wall 102 is a rigid and impermeable wall connected to the walls of the box 12 by a flexible joint 108 impermeable to gas.
  • the wall 102 extends perpendicular to the axis X-X of movement of the cam 54.
  • the same rear chamber 106 is provided for two or more than two loudspeakers, the membranes of which delimit the same front chamber 104 separated from the rear chamber in a single wall 102.
  • a calibrated decompression vent 114, 116 connects the front chamber 104 and the rear chamber 106 to the external environment. These vents are small enough to prevent the circulation of air during the movement of the membrane 22 but are suitable for ensuring equalization of the pressures between the exterior and the interior of the box during variations in atmospheric pressure.
  • the wall 102 moves due to the depression or the compression in the front chamber 104.
  • the cam 54 is moved and produces, under the action of the cam followers 58A, 58B, a force applied to the wall 102.
  • This force is contrary to the effect of the pressure acting on this same wall 102 and therefore oriented in the direction of movement of the wall 102.
  • This force is transmitted to the membrane 22 through the gas trapped in the front chamber 104.
  • the stiffness of the compression of the gas in the front chamber 104 is compensated by the force applied by the cam 56 of the axial biasing mechanism 50.
  • the profile of the cam 54 is identical to the profile described with regard to the preceding figures.
  • the cam 54 is clamped between rollers 202A, 202B, 202C, regularly angularly distributed around the axis XX. These rollers are carried at the free end of elastic arms 204A, 204B, 204C. These elastic arms are each fixed at their other end to a rigid structure 206, itself secured to the box 14.
  • the arms 204A, 204B, 204C extend perpendicular to the X-X axis in the same plane. They are offset transversely with respect to the X-X axis.
  • the rollers 202A, 202B, 202C are rotatably mounted in the extension of the axis of the arms 204A, 204B, 204C respectively, and along the axis of the arms. They are suitable for rolling along the surface of the cam 54 along the X-X axis.
  • the arms 204A, 204B, 204C are prestressed so as to ensure permanent contact between the rollers 202A, 202B, 202C and the cam 54, whatever the position of the rollers along the length of the cam 54 considered along the axis X-X.
  • the presence of three rotating elements angularly distributed around the X-X axis ensures satisfactory guiding of the cam 54 along the X-X axis.
  • the presence of prestressed elastic arms that are deformable in bending ensures a relatively constant force of the rollers 202A, 202B, 202C on the cam, whatever their position and prevents the rollers from locking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Claims (10)

  1. Geschlossene Lautsprecherbox (10), umfassend ein Gehäuse (12) und einen Lautsprecher (20), umfassend eine in Bezug auf das Gehäuse (12) bewegliche Membran (22), wobei das Gehäuse (12) und die Membran (22) eine im Wesentlichen geschlossene Kammer (14) begrenzen; der Lautsprecher (20) umfassend einen Motor (30) mit elektrischer Steuerung zur Betätigung der in Bezug auf das Gehäuse (12) beweglichen Membran (22), die Box ferner umfassend einen Mechanismus (50) zur axialen Belastung der Membran (22) aus ihrer mittleren Ruhestellung heraus entgegen der Druckkraft, die von dem im Kasten (12) enthaltenen Gas auf die Membran (22) ausgeübt wird, dadurch gekennzeichnet, dass der Mechanismus (50) einen Nocken (54), der in Bezug auf das Gehäuse (12) entlang einer Bewegungsachse (X-X) des Nockens unter der Verschiebungswirkung der Membran (22) beweglich ist, und mindestens einen Nockenfolger (58A, 58B; 200A, 200B, 200C), der quer zu dem Nocken (54) durch mindestens eine Feder (60A, 60B) belastet wird und an dem Nocken (54) anliegt, wobei der Nocken (54) mindestens eine Nockenfläche (56A, 56B) aufweist, die geeignet ist, um die Querkraft der oder jeder Feder (60A, 60B) in eine Axialkraft auf den Nocken (54) umzuwandeln, deren Stärke sich abhängig von der Position des Nockens (54) in Bezug auf das Gehäuse (12) ändert.
  2. Lautsprecherbox nach Anspruch 1, dadurch gekennzeichnet, dass der Nocken (54) über einen Stift (52), der sich entlang der Bewegungsachse (X- X) der Membran (22) erstreckt, mit der Membran (22) des Lautsprechers verbunden ist.
  3. Box nach Anspruch 2, dadurch gekennzeichnet, dass sie eine elastische Führungsverbindung (70) umfasst, die den Stift (52) mit dem Gehäuse (12) verbindet.
  4. Box nach Anspruch 1, dadurch gekennzeichnet, dass der Nocken (54) mit einer in Bezug auf das Gehäuse (12) beweglichen Wand (102) verbunden ist, wobei die bewegliche Wand (102) mit dem Gehäuse (12) eine im Wesentlichen geschlossene hintere Kammer (106) und eine im Wesentlichen geschlossene vordere Kammer (104) begrenzt, die teilweise durch die Membran (22) des Lautsprechers abgegrenzt wird.
  5. Box nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Nocken (54) mindestens zwei Nockenflächen (56A, 56B) umfasst, die winklig um die Bewegungsachse (X-X) des Nockens verteilt sind, und dass der Mechanismus (50) zur axialen Belastung der Membran (12) für jede Nockenfläche einen Nockenfolger (58A, 58B; 200A, 200B, 200C) aufweist, der in Richtung der Achse (X-X) der Nockenbewegung vorgespannt sind, und wobei der Nocken (54) zwischen den Nockenfolgern (58A, 58B; 200A, 200B, 200C) eingespannt ist.
  6. Box nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der oder jeder Nockenfolger (58A, 58B; 200A, 200B, 200C) ein Drehelement (62A, 62B) umfasst, das geeignet ist, um auf dem Nocken (54) zu rollen.
  7. Box nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der oder jeder Nockenfolger (200A, 200B, 200C) von einem vorgespannten elastischen Arm (204A, 204B, 204C) getragen wird, der sich in einer Ebene quer zur Achse (X-X) erstreckt.
  8. Box nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Nocken (54) einen Bereich (72) aufweist, dessen Abstand von der Bewegungsachse (X-X) des Nockens (54) entlang der Bewegungsachse (X-X) des Nockens 54 örtlich konstant ist, wobei dieser Bereich (72) in Kontakt mit dem oder jedem Nockenfolger (58A, 58B; 200A, 200B, 200C) ist, wenn die Membran (22) in Ruhestellung ist, sodass in dieser Ruhestellung der Membran (22) durch den Nocken (54) keine Kraft auf die Membran (22) ausgeübt wird.
  9. Box nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Nocken (54) einen Bereich (74) umfasst, der in Bezug auf die Bewegungsachse (X-X) des Nockens (52) geneigt ist.
  10. Box nach Anspruch 9, dadurch gekennzeichnet, dass die Neigung der Nockenfläche entlang des geneigten Bereichs (74) entlang der Bewegungsachse (X-X) des Nockens weg von der Kontaktzone mit dem Nockenfolger allmählich zunimmt, wenn die Membran (22) in Ruhestellung ist, sodass der Nocken (54) eine Kraft mit zunehmender Stärke auf die Membran (22) ausübt, je weiter die Membran (22) von ihrer Ruhestellung wegbewegt wird.
EP19809862.6A 2018-12-03 2019-12-03 Unendliches leitblech mit geringer steifigkeit Active EP3892011B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1872229A FR3089381B1 (fr) 2018-12-03 2018-12-03 Enceinte close à faible raideur
PCT/EP2019/083498 WO2020115044A1 (fr) 2018-12-03 2019-12-03 Enceinte close à faible raideur

Publications (2)

Publication Number Publication Date
EP3892011A1 EP3892011A1 (de) 2021-10-13
EP3892011B1 true EP3892011B1 (de) 2022-12-14

Family

ID=66286448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19809862.6A Active EP3892011B1 (de) 2018-12-03 2019-12-03 Unendliches leitblech mit geringer steifigkeit

Country Status (5)

Country Link
US (1) US11770648B2 (de)
EP (1) EP3892011B1 (de)
CN (1) CN113196799B (de)
FR (1) FR3089381B1 (de)
WO (1) WO2020115044A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190327552A1 (en) * 2017-11-27 2019-10-24 Leib Morosow Negative stiffness and low freqency speakers and other acoustics
WO2023274399A1 (en) * 2021-07-02 2023-01-05 Sonos, Inc. Systems and methods for stabilizing playback device
US20250220356A1 (en) * 2021-07-02 2025-07-03 Sonos, Inc. Systems and methods for stabilizing a playback device
IT202200026061A1 (it) * 2022-12-20 2024-06-20 Powersoft S P A Altoparlante e metodo per diffondere un suono.

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810021A (en) 1955-01-05 1957-10-15 Philip J Brownscombe Low frequency loudspeaker
US2846520A (en) 1955-11-22 1958-08-05 Philip J Brownscombe Low frequency loudspeaker
ATE38607T1 (de) * 1983-01-28 1988-11-15 Intersonics Inc Lautsprechersystem fuer sehr tiefe frequenzen.
NL8301460A (nl) 1983-04-26 1984-11-16 Philips Nv Elektroakoestische omzettereenheid met verlaagde resonantiefrekwentie.
JP2682014B2 (ja) * 1988-06-10 1997-11-26 石川島播磨重工業株式会社 液圧駆動スピーカ
US5012889A (en) * 1989-11-30 1991-05-07 Rogersound Labs, Inc. Speaker enclosure
US5748759A (en) 1995-04-05 1998-05-05 Carver Corporation Loud speaker structure
US7116795B2 (en) * 2003-02-06 2006-10-03 Michael P Tuason Self-aligning self-sealing high-fidelity portable speaker and system
CA2520179A1 (en) * 2003-04-04 2004-10-14 Audio Products International Corp. Outdoor loudspeaker with passive radiator
US7885418B1 (en) * 2007-01-17 2011-02-08 William Brian Hallman Acoustic actuator and passive attenuator incorporating a lightweight acoustic diaphragm with an ultra low resonant frequency coupled with a shallow enclosure of small volume
DE102012025422B4 (de) * 2012-10-23 2023-06-01 Gerwin Barkam Vorrichtung zur Resonanzminimierung von Gehäusen
US20150110335A1 (en) * 2013-10-10 2015-04-23 Knowles Electronics, Llc Integrated Speaker Assembly
CN203827500U (zh) * 2014-04-08 2014-09-10 微太科技股份有限公司 音箱共鸣控制装置
US9813812B2 (en) * 2014-12-12 2017-11-07 Analog Devices Global Method of controlling diaphragm excursion of electrodynamic loudspeakers
GB2543322A (en) * 2015-10-14 2017-04-19 Music Group Ip Ltd Loudspeaker

Also Published As

Publication number Publication date
US11770648B2 (en) 2023-09-26
WO2020115044A1 (fr) 2020-06-11
FR3089381A1 (fr) 2020-06-05
EP3892011A1 (de) 2021-10-13
CN113196799B (zh) 2024-09-20
US20220030351A1 (en) 2022-01-27
CN113196799A (zh) 2021-07-30
FR3089381B1 (fr) 2020-10-30

Similar Documents

Publication Publication Date Title
EP3892011B1 (de) Unendliches leitblech mit geringer steifigkeit
EP0008274B1 (de) Unidirektionales akustisches Gehäuse
EP0005409B1 (de) Piezoelektrischer Wandler mit mechanischer Verstärkung für sehr niedrige Frequenzen und akustische Antenne
FR2529427A1 (fr) Transducteur electro-acoustique a grande elongation
EP1031256B1 (de) Linearer lautsprecher
WO2018104656A1 (fr) Dispositif de transmission d'un mouvement et d'une force entre deux zones isolées l'une de l'autre
FR3043241A1 (fr) Fenetre multi-vitrage integrant un dispositif de reduction active du bruit
EP3371984B1 (de) Mehrfachverglastes fenster mit einer geräuschreduzierungsvorrichtung
EP2908023A1 (de) Steuerbares hydraulisches schwingungsdämpfendes Lager
EP0189345B1 (de) Vorrichtung zur Zusammenfügung durch Kalandern mindestens einer Glasschicht und mindestens einer Kunststoffolie
EP2468631B1 (de) Mit einem eigenen Motorantrieb ausgestattetes Gelenk, und automatisch regulierte Gelenkanordnung
FR2466931A1 (fr) Transducteur electro-acoustique directionnel
EP2465772A1 (de) Fluidischer Mikrogenerator von synthetischen Sprühstrahlen
WO1989000308A1 (fr) Regulateur de pression
EP0817164B1 (de) Geräuschabsorbierende Strukturen und daraus hergestellte Wände
WO2019020604A2 (fr) Dispositif de compensation en temperature et transpondeur electro-optique mettant en œuvre un tel dispositif
EP3371521B1 (de) Vorrichtung zur natürlichen belüftung eines raumes mit ventilationskanal in kombination mit einem schallabsorber
EP3772225A1 (de) Lautsprecher mit geringer trägheit
FR3051081A1 (fr) Moteur electrique comprenant un organe rapporte.
EP0813951A1 (de) Übertragungsring für Luftreifen oder für Luftreifengürtel
FR2682603A1 (fr) Dispositif pour commander manuellement l'aspiration dans une sonde tracheale.
WO2012001318A1 (fr) Mecanisme etanche de transmission de mouvements pour enceinte confinee et systeme pour deposer sous vide du materiau sur un substrat
EP0375528A1 (de) Gerät zur Manipulierung eines lichtreflektierenden Spiegels
FR3071552B1 (fr) Dispositif ameliore d'amortissement d'engins spatiaux
FR2618284A1 (fr) Enceinte acoustique a haute definition musicale.

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210602

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220706

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019023233

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1538385

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230115

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230314

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1538385

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230315

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230425

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230414

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230414

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602019023233

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

26N No opposition filed

Effective date: 20230915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602019023233

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20231203

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20231231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240702

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231203

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240702

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20241112

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20191203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20191203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221214