EP3078211A1 - Haut-parleur electrodynamique compact a membrane convexe - Google Patents
Haut-parleur electrodynamique compact a membrane convexeInfo
- Publication number
- EP3078211A1 EP3078211A1 EP14808980.8A EP14808980A EP3078211A1 EP 3078211 A1 EP3078211 A1 EP 3078211A1 EP 14808980 A EP14808980 A EP 14808980A EP 3078211 A1 EP3078211 A1 EP 3078211A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loudspeaker
- seal
- membrane
- connecting member
- assembly
- 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.)
- Granted
Links
- 230000005520 electrodynamics Effects 0.000 title claims abstract description 5
- 230000005291 magnetic effect Effects 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 51
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 210000000056 organ Anatomy 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 240000008415 Lactuca sativa Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012045 salad Nutrition 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
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- 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
- 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
Definitions
- the present invention relates to an electrodynamic loudspeaker comprising:
- the assembly comprising a convex membrane whose convexity is turned towards the outside of the loudspeaker, and at least one excitation coil of the membrane, the coil being located in the 'air gap and defining a speaker axis,
- the first seal is fixed on a coil holder or on an edge of the membrane, in front of the loudspeaker.
- the second seal is also attached to the coil holder, usually just in front of the magnetic circuit.
- the first seal and the second seal are separated axially by a certain distance.
- the speaker is radially relatively small around the magnetic circuit, but has a substantial axial extension, further increased by the convexity of the membrane.
- the second seal has a radially inner fixing point fixed on the magnetic circuit, and a radially outer fixing point fixed on the edge of the membrane.
- the edge of the membrane is located radially at a distance from the magnetic circuit.
- the membrane has a large axial movement.
- the frame which defines an interior volume receiving at least partly the membrane at rest as in operation, has a significant radial extension at the magnetic circuit.
- the loudspeaker instead of presenting a fine yoke, the loudspeaker has a wide bottom.
- Such a loudspeaker can be bulky and difficult to arrange in an acoustic chamber, especially if it is generally of substantially spherical shape in the vicinity of the membrane or if the enclosure comprises other contiguous speakers angularly offset relative to said speaker.
- An object of the invention is therefore to provide a speaker easier to arrange, in particular in a substantially spherical overall acoustic chamber in the vicinity of the membrane or having at least one other speaker contiguous to said speaker and angularly offset from it.
- the subject of the invention is a loudspeaker of the type described above, in which the assembly further comprises at least one connecting member integral with the membrane, the second gasket comprising a radially internal fixing point fixed on the connecting member, and a radially outer fixing point fixed on the frame.
- the loudspeaker comprises one or more of the following characteristics, taken separately or in any technically possible combination:
- the coil occupies at rest a rest position located axially between a first radial plane in which substantially the first seal, and a second radial plane in which substantially extends the second seal;
- the rest position of the coil is located axially between the first radial plane and a median plane equidistant from the first plane and the second plane;
- the assembly further comprises a coil holder fixed on a central portion of the membrane, the connecting member being separate from the coil holder and fixed on a peripheral portion of the membrane, preferably on a peripheral edge of the membrane;
- the connecting member has a general shape that converges axially in the direction from the membrane to the magnetic circuit
- the first seal comprises a radially inner fixation point fixed on the connecting member, the connecting member having a shape suitable for the said radially inner fixing point of the first seal being situated axially away from the peripheral edge; of the membrane;
- said shape of the connecting member is such that said radially inner fixing point of the first seal is substantially closer to the axis than the peripheral edge of the membrane;
- the connecting member has a proximal portion axially relative to the membrane, and a distal portion axially relative to the membrane, the radially inner fixing point of the second seal being substantially located along the axis on one end of the part. distal, the end being opposed to the proximal portion along the axis;
- the connecting member is perforated.
- the invention also relates to an acoustic enclosure comprising at least one loudspeaker as defined above.
- the invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawing, in which the single figure is a schematic view of an acoustic enclosure according to the invention. , in section along a plane passing through the axis of the loudspeaker.
- the loudspeaker 1 comprises a box 5, and at least one speaker 10 disposed in the box.
- the loudspeaker 10 comprises a frame 15, fixed on the box 5, a magnetic circuit 20 secured to the frame and defining an air gap 25, and a set 30 movable relative to the frame 15 along an axis D.
- the loudspeaker 10 is for example a subwoofer, ie a loudspeaker adapted to broadcast sound waves with frequencies below 1000 Hz, preferably below 500 Hz, even more preferably below 150 Hz. .
- the speaker 10 is advantageously substantially of revolution about the axis D.
- the loudspeaker 1 also comprises a first suspension joint 35 of the assembly 30 connecting the assembly 30 and the chassis 15, and a second suspension joint 40 of the assembly 30 connecting the assembly 30 and the chassis 15.
- the chassis 15 is sometimes called "salad bowl”.
- the frame 15 comprises a wall
- the frame 15 is for example metal.
- the side wall 47 has a frustoconical shape of axis D flared towards the front of the loudspeaker 10, that is to say the outside of the acoustic enclosure 1.
- the magnetic circuit 20 is fixed on the wall 45 of the frame 15.
- the magnetic circuit 20 comprises for example a permanent magnet 49 of annular shape, and a ferromagnetic part 51 adapted to define the gap 25.
- the assembly 30 comprises a convex membrane 53 whose convexity is turned towards the outside of the loudspeaker 10, a coil holder 55, a coil 57 for exciting the membrane, and a connection member 59 integral with the membrane .
- the assembly 30 is movable in translation along the axis D relative to the frame 15.
- the assembly 30 is suspended from the frame 15 by the first seal 35 and the second seal 40.
- the membrane 53 is for example a metal membrane, and advantageously has a spherical cap shape.
- axial or axially means “in the direction shown by the axis D”.
- dial or radially means “in a direction substantially perpendicular to the axis D and passing through the axis D”.
- the membrane 53 has a central portion 61 located near the axis D on which is fixed the spool holder 55, and a peripheral portion 63 extending radially between the central portion and a peripheral edge 65 of the membrane.
- the peripheral edge 65 is, in the example shown, of substantially circular shape centered on the axis D.
- the coil 57 is adapted to oscillate along the axis D around an equilibrium position shown in FIG. 1, in which it is situated in the gap 25.
- the connecting member 59 is fixed on the peripheral portion 63 of the membrane 53, advantageously on the peripheral edge 65.
- the connecting member 59 is fixed on the reel holder 55. According to a particular embodiment, this variant not shown and that shown in Figure 1 are combined.
- the connecting member 59 and the reel holder 55 are distinct, that is to say that the connecting member is not fixed on the reel holder.
- the connecting member 59 has a proximal portion 67 axially relative to the membrane 53, and a distal portion 69 axially relative to the membrane.
- the connecting member 59 is for example aluminum, magnesium, or plastic composite.
- the connecting member 59 has an advantageous stiffness / density ratio, for example greater than 10 MPa.kg -1 .m 3 .
- the connecting member 59 is advantageously openwork.
- the connecting member 59 has a general shape that converges axially in the direction from the diaphragm 53 to the magnetic circuit 20. More specifically, the connecting member 59 converges to the magnetic circuit 20, advantageously substantially to a point A located between the magnetic circuit 20 and the wall 45 of the frame 15, on the radially outer side of the magnetic circuit.
- the proximal portion 67 of the connecting member 59 has for example, in section along a plane P passing through the axis D, an "L" shape.
- the proximal portion 67 comprises for example a substantially cylindrical skirt 71 of axis D, and a flange 73 protruding from the skirt 67 in the direction of the axis D and advantageously substantially perpendicular to the axis D.
- the distal portion 69 has for example a substantially frustoconical shape of axis D.
- the distal portion 69 is fixed on a radially inner edge 75 of the flange 73.
- the first seal 35 extends around the axis D, for example substantially in a plane P1 perpendicular to the axis D.
- the seal 35 advantageously has, in section along the plane P, a half-roll or ⁇ shape (Omega), the convexity of the half roll being for example turned axially rearward of the speaker 10, that is to say towards the inside of the acoustic enclosure 1.
- the first seal 35 is for example of flexible plastic material.
- the first seal 35 is advantageously airtight.
- the first seal 35 has a radially inner fixing point 77 fixed on the connecting member 59, and a second radially outer fixing point 79 fixed to the frame 15, for example on one end of the wall 47 situated axially on the front side. of the speaker 10.
- the fixing points 77 and 79 are for example substantially aligned along the plane P1.
- the attachment point 77 is situated axially away from the peripheral edge 65 of the membrane 53, for example at a distance D1 between the length of the peripheral edge 65 of the loudspeaker 10 divided by 200 and the length of the peripheral edge 65 of the speaker 10 divided by 10.
- the attachment point 77 is closer to the axis D than is the peripheral edge 65, for example a distance D2 between zero and the radius of the loudspeaker divided by 4.
- the attachment point 77 is located on the flange 73 of the proximal portion 67 of the connecting member 59.
- D1 also represents, in the example shown, the axial extension of the proximal portion 67 of the connecting member 59.
- the second seal 40 is axially further away from the membrane 53 than is the first seal 35.
- the second seal 40 is located at a distance D3 from the first seal along the axis D, with D3 advantageously between 0 , 5 and 10 times the maximum axial to peak axial displacement of the diaphragm 53.
- the second seal 40 extends around the axis D, for example substantially in a plane P2 perpendicular to the axis D.
- the second seal 40 is for example a bellows seal known in itself to those skilled in the art.
- the second seal 40 includes a radially inner fixing point 81 located on the connecting member 59, and an attachment point 83 located on the frame 15, for example near the junction between the walls 45 and 47.
- the attachment points 81 and 83 are for example substantially aligned along the plane P2.
- the fixing point 81 is advantageously located on an end 85 of the connecting member 59 axially opposite the membrane 53.
- Planar planes P1 and P2 define between them a portion 87 of the space in which the coil 57 is located in its rest position.
- Plans P1 and P2 also define a median plane P 'located equidistant from plane P1 and plane P2.
- the median plane P 'and the plane P1 define between them a portion 89 of the space in which the coil 57 is advantageously located in its rest position.
- the casing 5 comprises an outer wall 91 extending around the axis D in the extension of the membrane 53 when the coil 57 is in its rest position.
- the wall 91 is for example plastic.
- the wall 91 advantageously has, seen from the outside of the enclosure 1, a general shape of sphere portion.
- the wall 91 comprises a portion 93 extending axially between the frame 15 and the membrane 53 and adapted to partially hide the first seal 35 in the view of a user of the acoustic enclosure 1.
- the coil 57 When the coil 57 is traversed by a variable current, it vibrates in the air gap 25 along the axis D. Thus, the assembly 30 is set in motion. The membrane 53 vibrates and then emits sound waves.
- the first seal 35 and the second seal 40 provide a mechanical suspension of the assembly 30.
- the second seal 40 is fixed on the assembly 30 by its fixing point 81 radially inside. This makes it possible to limit the radial extension E of the frame 15 of the rear side of the loudspeaker 10 (that is to say on the side axially opposite to the membrane 53).
- the loudspeaker 10 fits more easily in the acoustic enclosure 1 of generally spherical general shape in the vicinity of the membrane 53.
- this frees up space to arrange at least one other speaker (not shown) in regions P3 and P4 of the speaker 1.
- the connecting member 59 it is possible to accommodate the first seal 35 inside the convex shape, in the locally spherical example, constituted by the membrane 53 and the box 5. Indeed, as the radially inner fixing point 77 is at the distance D1 from the peripheral edge 65, and not on the peripheral edge or in the immediate vicinity of the peripheral edge, the first seal 35 does not project radially out of said convex shape.
- the attachment point 77 is radially at the distance D2 from the peripheral edge 65. As a result, it is easier to accommodate the first seal 35 radially between the assembly 30. and the frame 15.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1362211A FR3014628B1 (fr) | 2013-12-05 | 2013-12-05 | Haut-parleur electrodynamique compact a membrane convexe |
PCT/EP2014/076674 WO2015082668A1 (fr) | 2013-12-05 | 2014-12-05 | Haut-parleur electrodynamique compact a membrane convexe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3078211A1 true EP3078211A1 (fr) | 2016-10-12 |
EP3078211B1 EP3078211B1 (fr) | 2019-07-10 |
Family
ID=50179772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14808980.8A Active EP3078211B1 (fr) | 2013-12-05 | 2014-12-05 | Haut-parleur electrodynamique compact a membrane convexe |
Country Status (4)
Country | Link |
---|---|
US (1) | US9967675B2 (fr) |
EP (1) | EP3078211B1 (fr) |
FR (1) | FR3014628B1 (fr) |
WO (1) | WO2015082668A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190253806A1 (en) * | 2018-02-15 | 2019-08-15 | Alexander B. RALPH | Ported tweeter |
FR3087068B1 (fr) * | 2018-10-08 | 2022-01-21 | Devialet | Haut-parleur electrodynamique comportant un treillis |
FR3097397B1 (fr) * | 2019-06-12 | 2022-07-22 | Devialet | Enceinte acoustique simplifiée |
EP4017025A4 (fr) * | 2019-08-17 | 2023-05-24 | Sound Fun Corporation | Unité de haut-parleur et diaphragme de haut-parleur incurvé |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3925626A (en) * | 1974-02-22 | 1975-12-09 | Jr Robert John Stallings | Dynamic speaker having dome diaphragm and basket frequency |
GB1563511A (en) * | 1976-03-19 | 1980-03-26 | Harwood H | Diaphragms for electroacoustic transducers |
US4158756A (en) * | 1976-08-27 | 1979-06-19 | Bose Corporation | Dynamic loudspeaker with plastic basket encapsulating front pole plate |
US4295006A (en) * | 1978-04-24 | 1981-10-13 | Victor Company Of Japan, Limited | Speaker system |
WO1981001492A1 (fr) * | 1979-11-09 | 1981-05-28 | Matsushita Electric Ind Co Ltd | Haut-parleur et systeme haut-parleur |
JPS622866Y2 (fr) * | 1981-03-24 | 1987-01-22 | ||
NL8200416A (nl) * | 1982-02-04 | 1983-09-01 | Philips Nv | Vlakmembraan omzetter en werkwijze voor het vervaardigen van een dergelijke omzetter. |
NL8200690A (nl) * | 1982-02-22 | 1983-09-16 | Philips Nv | Luidsprekermembraan bevattende een laag van polymethacrylimideschuim. |
DE69535049T2 (de) * | 1994-04-25 | 2007-05-10 | Matsushita Electric Industrial Co., Ltd., Kadoma | Ausgedehnter Lautsprecher |
JPH09327087A (ja) * | 1996-06-06 | 1997-12-16 | Matsushita Electric Ind Co Ltd | ダブルコーンスピーカ |
US7225895B2 (en) * | 1998-11-30 | 2007-06-05 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
JP3942813B2 (ja) * | 2000-08-03 | 2007-07-11 | パイオニア株式会社 | スピーカおよびその組立方法 |
US6496590B2 (en) * | 2000-12-08 | 2002-12-17 | Jl Audio, Inc. | Loudspeaker with improved diaphragm |
US6862361B2 (en) * | 2001-04-05 | 2005-03-01 | Floyd John James | Audio speaker |
US7197154B2 (en) * | 2002-08-21 | 2007-03-27 | Sahyoun Joseph Y | Method and audio speaker with minimization of wobble of the voice coil |
JP3651472B2 (ja) * | 2003-10-14 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
JP4604609B2 (ja) * | 2004-08-27 | 2011-01-05 | パナソニック株式会社 | スピーカ |
US7961902B2 (en) * | 2005-05-25 | 2011-06-14 | Pioneer Corporation | Speaker apparatus and manufacturing method thereof |
JP4878625B2 (ja) * | 2006-05-24 | 2012-02-15 | パイオニア株式会社 | スピーカ装置 |
EP2026600A1 (fr) * | 2007-08-07 | 2009-02-18 | HSIAO, Ko Fe | Haut-parleur |
JPWO2010013338A1 (ja) * | 2008-07-31 | 2012-01-05 | パイオニア株式会社 | スピーカ装置及び自動車 |
US8204269B2 (en) * | 2008-08-08 | 2012-06-19 | Sahyoun Joseph Y | Low profile audio speaker with minimization of voice coil wobble, protection and cooling |
KR101062039B1 (ko) * | 2009-08-27 | 2011-09-05 | 신정열 | 슬림형 스피커 |
JP2011071681A (ja) * | 2009-09-25 | 2011-04-07 | Hosiden Corp | スピーカ用ダンパおよびスピーカ |
WO2011077560A1 (fr) * | 2009-12-25 | 2011-06-30 | パイオニア株式会社 | Vibreur de haut-parleur et dispositif de haut-parleur |
US9232314B2 (en) * | 2013-09-09 | 2016-01-05 | Sonos, Inc. | Loudspeaker configuration |
US9571935B2 (en) * | 2015-01-26 | 2017-02-14 | Harman International Industries, Inc. | Loudspeaker with ducts for transducer voice coil cooling |
-
2013
- 2013-12-05 FR FR1362211A patent/FR3014628B1/fr not_active Expired - Fee Related
-
2014
- 2014-12-05 WO PCT/EP2014/076674 patent/WO2015082668A1/fr active Application Filing
- 2014-12-05 US US15/101,398 patent/US9967675B2/en active Active
- 2014-12-05 EP EP14808980.8A patent/EP3078211B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
US9967675B2 (en) | 2018-05-08 |
EP3078211B1 (fr) | 2019-07-10 |
WO2015082668A1 (fr) | 2015-06-11 |
US20170171663A1 (en) | 2017-06-15 |
FR3014628A1 (fr) | 2015-06-12 |
FR3014628B1 (fr) | 2017-04-21 |
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