EP3637787A1 - Lautsprecherbox, die ein gehäuse aus monoblock-kunststoffmaterial umfasst - Google Patents

Lautsprecherbox, die ein gehäuse aus monoblock-kunststoffmaterial umfasst Download PDF

Info

Publication number
EP3637787A1
EP3637787A1 EP19201767.1A EP19201767A EP3637787A1 EP 3637787 A1 EP3637787 A1 EP 3637787A1 EP 19201767 A EP19201767 A EP 19201767A EP 3637787 A1 EP3637787 A1 EP 3637787A1
Authority
EP
European Patent Office
Prior art keywords
shell
acoustic enclosure
frame
along
longitudinal axis
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
Application number
EP19201767.1A
Other languages
English (en)
French (fr)
Other versions
EP3637787B1 (de
Inventor
Emmanuel Nardin
Antonio Oliveira
Jérémy Beigeaud
Max RAINER
Nicolas REGENTÊTE
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 EP3637787A1 publication Critical patent/EP3637787A1/de
Application granted granted Critical
Publication of EP3637787B1 publication Critical patent/EP3637787B1/de
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • 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
    • H04R1/026—Supports for loudspeaker casings
    • 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
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • 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
    • H04R1/2892—Mountings or supports for transducers
    • H04R1/2896—Mountings or supports for transducers 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • 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
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/029—Manufacturing aspects of enclosures transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements

Definitions

  • the loudspeakers In a compact acoustic enclosure, the loudspeakers, especially woofers, are relatively bulky elements. They are arranged head to tail so that the displacements of their membranes do not create vibrations capable of causing untimely displacements of the acoustic enclosure.
  • the loudspeakers are fixed to separate portions of the shell from one another, for example by screws. Then, the separate portions are assembled together to form the shell and put the two speakers in their head to tail position.
  • the shell has traces of assembly, such as joints, perceptible to the eye or to the touch by a user of the acoustic enclosure, all the more so since the latter is compact.
  • traces of assembly are sometimes considered unsightly, because they affect the smooth appearance of the speaker.
  • the object of the invention is to propose an acoustic enclosure having a smoother appearance, generally perceived as more aesthetic by a user.
  • the acoustic enclosure 1 is for example an active enclosure, that is to say that it comprises an audio signal reader and an amplifier (not shown, just as other electrical or electronic elements of the device are not shown). 'enclosure not relevant to explain the invention).
  • the acoustic enclosure rests on a surface S, preferably horizontal.
  • the acoustic enclosure for example has a generally oblong shape along a longitudinal axis L, which advantageously forms an angle with the surface S, as visible on the figure 3 .
  • the acoustic enclosure thus has a front part 3 and a rear part 5 along the longitudinal axis L, the front part being higher than the rear part relative to the surface S.
  • the acoustic enclosure comprises a metal frame 7, and a plastic shell 9 fixed to the frame, the shell defining at least two openings 11A and 11B.
  • the speaker includes two 13A and 13B woofers (only one of which is visible on the figure 1 ) arranged head to tail along a transverse axis T for example perpendicular to the longitudinal axis L.
  • the two speakers 13A and 13B extend respectively through openings 11A and 11B.
  • woofer is meant a speaker adapted to broadcast sound waves of frequencies below 1000 Hz, preferably less than 500 Hz, even more preferably less than 150 Hz.
  • the acoustic enclosure 1 advantageously comprises a third loudspeaker (not shown), for example fixed in a housing 15 formed by the shell 9 in the front part 3.
  • the acoustic enclosure comprises two metallic inserts 17A and 17B, advantageously symmetrical to one another with respect to a plane P perpendicular to the transverse axis T and containing the longitudinal axis L, one of which is shown on the figure 7 .
  • the acoustic enclosure has a symmetrical external appearance with respect to this plane P.
  • the third loudspeaker (not shown) located in the housing 15 is for example centered on the longitudinal axis L.
  • it is suitable for broadcasting sound waves with frequencies ranging from 300 Hz to 20 kHz, or even from 150 Hz to 40 kHz.
  • the frame 7 is advantageously a foundry piece, for example made of aluminum.
  • the frame 7 comprises an external part 19 forming the rear part 5 of the acoustic enclosure, and an internal part 21 integral with the external part and extending along the plane P.
  • the external part 19 comprises a rear portion 25 comprising a plurality of fins 27 ( figure 6 ) adapted to dissipate the heat given off in the internal volume 23 during the operation of the acoustic enclosure.
  • the external part 19 also includes a sole 29 which projects under the loudspeakers 13A, 13B along the longitudinal axis L from the rear portion 25.
  • the external part 19 of the frame and the shell 9 are adapted to fit into one another along the longitudinal axis L.
  • the external part 19 advantageously has a general "U" shape.
  • One of the branches of the "U" is formed by the sole 29 and is for example larger than the other branch.
  • the fins 27 are for example parallel to the plane P, and advantageously delimited by a spherical envelope 31 ( figure 6 ) with the same curvature as the front part 3 of the acoustic enclosure.
  • the external part 19 comprises a curvilinear edge 33 defining a groove 35 in which is disposed a seal 37 forming a loop.
  • the curvilinear edge 33 is adjacent to a curvilinear edge 39 of the shell 9, the seal 37 being disposed between the two curvilinear edges 33 and 39.
  • the internal part 21 forms a support for fixing the two speakers 13A, 13B and the shell 9.
  • the internal part 21 defines for example an orifice 41 ( figure 2 ) adapted to fix the speaker 11B on the internal part 21.
  • a screw (not shown) is screwed into the speaker 11B through the orifice 41.
  • the internal part 21 defines a surface 43 on which the loudspeaker 11A is for example glued.
  • the shell 9 is in one piece.
  • the term "monoblock" means that the shell 9 is in one piece; it does not have parts attached to each other by mechanical means.
  • the shell 9 is advantageously fixed to the internal part 21 by a single screw / nut system, comprising a stud 45 fixed on the internal part, and a nut 47 screwed onto this stud.
  • One or more washers 49 are threaded on the stud 45 between the shell 9 and the internal part 21 to adjust the axial spacing between these two parts.
  • the shell 9 comprises, successively along the longitudinal axis L, a front portion 51 forming a portion of a sphere, an intermediate portion 53 forming a portion of a cylinder, and two rear walls 55A, 55B situated longitudinally behind two membranes 57A , 57B.
  • the shell 9 also includes a skirt 59 ( figure 4 ) located under the speakers 13A, 13B and partially masking the sole 29 of the frame 7.
  • the front part 3 of the acoustic enclosure is at least partially formed by the shell 9.
  • the shell 9 has a general "U" shape in view along an axis of view E, orthogonal to the longitudinal axis L and to the transverse axis T.
  • the front part 51 defines the abovementioned housing 15.
  • the portion of sphere formed by the front part 51 is centered on a point located on the longitudinal axis L.
  • the cylinder portion formed by the intermediate part 53 is centered on the longitudinal axis L.
  • the rear walls 55A, 55B are for example parallel to the plane P.
  • the rear walls define two rails 61A, 61B on the curvilinear edge 39 ( figures 5 and 6 ).
  • the rails 61A, 61B are respectively received in grooves 63A, 63B defined by the curvilinear edge 33 of the external part 25 of the frame.
  • the rails 61A, 61B and the corresponding grooves 63A, 63B are for example circular in view along the transverse axis T.
  • the openings 11A, 11B are advantageously circular and centered on the transverse axis T.
  • the openings 11A, 11B are adapted to allow the introduction of the loudspeakers 13A, 13B into the internal volume 23 by translation along the transverse axis T.
  • the shell 9 comprises an internal layer 65 ( figures 5 and 6 ), delimiting the internal volume 23, and an external layer 67, or appearance layer, visible from the outside of the acoustic enclosure.
  • the internal layer 65 is thicker than the external layer 67.
  • the internal layer comprises for example polycarbonate (PC) reinforced with 15% to 25% by mass of glass fibers.
  • the outer layer 67 is for example made of acrylonitrile butadiene styrene (ABS).
  • the inserts 17A, 17B are advantageously structurally identical to each other. They are arranged symmetrically, as has already been said, on either side of the plane P. Also only the insert 17A will be described below with reference to the figure 7 .
  • the insert 17A is advantageously made of stainless steel.
  • the insert is produced from a metal sheet, for example having a thickness of between 0.6 mm and 1.5 mm.
  • the insert 17A comprises a circular part 69 situated in an edge 71 of the shell 9 delimiting the opening 11A, and an adjacent part 73 situated in the rear wall 55A.
  • the role of the circular part is to stiffen the edge of the shell 9 delimiting the opening 11A.
  • the speakers 13A, 13B are rigidly fixed on the internal part 21 of the frame 7, and are devoid of any rigid connection with the shell 9 other than that formed by the frame.
  • the edge 71 is cantilevered with respect to the loudspeaker 13. The same applies symmetrically with respect to the plane P for the loudspeaker 13B and the edge of the shell delimiting the opening 11B.
  • the adjacent part 73 stiffens the rear wall 55A. This in particular avoids pumping phenomena, that is to say vibrations of the rear wall 55A due to pressure fluctuations in the internal volume 23 caused by the transverse movement of the membranes 57A, 57B of the speakers 13A, 13B.
  • acoustic enclosure To assemble the acoustic enclosure, electronic elements (not shown) are first attached to the frame 7 in the internal volume 23. The frame 7 and the shell 9 are then assembled by interlocking along the longitudinal axis L. The rails 61A, 61B are received in the grooves 63A, 63B. The seal 37 is compressed between the curved edge 33 and the outer part 19 of the frame and the curved edge 39 of the shell.
  • the nut 47 is screwed onto the stud 45 to fix the shell to the frame 7.
  • the fixing requires a single screw / nut system.
  • the number and thickness of the washers 49 makes it possible to adjust the distance between the frame and the shell along the longitudinal axis L.
  • the loudspeaker 13B is then introduced into the internal volume 23 through the opening 11B of the shell along the transverse axis T.
  • the loudspeaker 13B is fixed to the internal part 21 using a screw (not shown) introduced into the orifice 41 and screwed from the opposite side of the internal part 21 relative to the speaker 13B.
  • the loudspeaker 13A is then introduced into the internal volume 23 through the opening 11A along the transverse axis T.
  • the loudspeaker 13A is then bonded to the bonding surface 43 of the internal part 21.
  • the speakers 13A, 13B are electrically connected to the amplifier (not shown).
  • the third loudspeaker (not shown) is fixed in the housing 15.
  • the assembly of the acoustic enclosure is easy and the shell 9 has a smoother appearance.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP19201767.1A 2018-10-08 2019-10-07 Lautsprecherbox, die ein gehäuse aus monoblock-kunststoffmaterial umfasst Active EP3637787B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1859306A FR3087071B1 (fr) 2018-10-08 2018-10-08 Enceinte acoustique comportant une coque en matiere plastique monobloc

Publications (2)

Publication Number Publication Date
EP3637787A1 true EP3637787A1 (de) 2020-04-15
EP3637787B1 EP3637787B1 (de) 2025-04-16

Family

ID=65244178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201767.1A Active EP3637787B1 (de) 2018-10-08 2019-10-07 Lautsprecherbox, die ein gehäuse aus monoblock-kunststoffmaterial umfasst

Country Status (6)

Country Link
US (1) US10869137B2 (de)
EP (1) EP3637787B1 (de)
JP (1) JP7577439B2 (de)
KR (1) KR102635776B1 (de)
CN (1) CN111010647B (de)
FR (1) FR3087071B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD717341S1 (en) * 2013-06-09 2014-11-11 Apple Inc. Electronic device
FR3165138A1 (fr) * 2024-07-23 2026-01-30 Devialet Enceinte acoustique à deux haut-parleurs tête-bêche radialement fixés sur une âme centrale

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805221A (en) * 1984-04-17 1989-02-14 Quaas Juergen Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
FR3012716A1 (fr) * 2013-10-30 2015-05-01 Devialet Enceinte acoustique a au moins un haut-parleur a membrane mobile convexe en continuite de forme avec un organe adjacent
CN207910991U (zh) * 2017-10-30 2018-09-25 腾讯科技（深圳）有限公司 智能语音控制音箱

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3175641U (ja) 2012-03-02 2012-05-24 浩一 佐藤 スピーカ装置
FR3015166B1 (fr) 2013-12-18 2017-07-14 Devialet Enceinte acoustique comprenant une paroi externe non conductrice de la chaleur, un haut-parleur electrodynamique et un circuit electronique de commande
SE538743C2 (en) * 2015-02-13 2016-11-08 Keyofd Ab Loudspeaker enclosure with a sealed acoustic suspension chamber
CN205829926U (zh) * 2016-07-25 2016-12-21 广东欧珀移动通信有限公司 一种封闭式音箱
CN206585737U (zh) * 2017-03-23 2017-10-24 深圳纽斯声学系统有限公司 组合阵列式低音箱

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805221A (en) * 1984-04-17 1989-02-14 Quaas Juergen Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
FR3012716A1 (fr) * 2013-10-30 2015-05-01 Devialet Enceinte acoustique a au moins un haut-parleur a membrane mobile convexe en continuite de forme avec un organe adjacent
CN207910991U (zh) * 2017-10-30 2018-09-25 腾讯科技（深圳）有限公司 智能语音控制音箱

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JAN SELLEY: "Naim Mu-So Qb Review. Can Naim make their philosophy work at 600?", 30 January 2016 (2016-01-30), XP055589715, Retrieved from the Internet <URL:https://www.avforums.com/review/naim-mu-so-qb-review.12327> [retrieved on 20190517] *
MICHAEL BROWN: "Devialet Phantom review: Forget everything you thought you knew about speaker technology", 13 November 2015 (2015-11-13), XP055589418, Retrieved from the Internet <URL:https://www.techhive.com/article/3004548/devialet-phantom-review-forget-everything-you-thought-you-knew-about-speaker-technology.html> [retrieved on 20190516] *

Also Published As

Publication number Publication date
JP2020061738A (ja) 2020-04-16
FR3087071A1 (fr) 2020-04-10
KR20200040201A (ko) 2020-04-17
EP3637787B1 (de) 2025-04-16
US10869137B2 (en) 2020-12-15
FR3087071B1 (fr) 2020-11-06
JP7577439B2 (ja) 2024-11-05
CN111010647A (zh) 2020-04-14
KR102635776B1 (ko) 2024-02-08
CN111010647B (zh) 2024-06-21
US20200112797A1 (en) 2020-04-09

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