EP0480160A2 - Haut-parleur haute fréquence en forme de calotte - Google Patents

Haut-parleur haute fréquence en forme de calotte Download PDF

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Publication number
EP0480160A2
EP0480160A2 EP91114500A EP91114500A EP0480160A2 EP 0480160 A2 EP0480160 A2 EP 0480160A2 EP 91114500 A EP91114500 A EP 91114500A EP 91114500 A EP91114500 A EP 91114500A EP 0480160 A2 EP0480160 A2 EP 0480160A2
Authority
EP
European Patent Office
Prior art keywords
magnetic pot
membrane
housing part
pot
magnetic
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
EP91114500A
Other languages
German (de)
English (en)
Other versions
EP0480160A3 (en
EP0480160B1 (fr
Inventor
Ulrich Kizak
Kurt Leipold
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland GmbH
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 Nokia Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0480160A2 publication Critical patent/EP0480160A2/fr
Publication of EP0480160A3 publication Critical patent/EP0480160A3/de
Application granted granted Critical
Publication of EP0480160B1 publication Critical patent/EP0480160B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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; 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

Definitions

  • the invention is concerned with the reduction of dome tweeters.
  • dome tweeters have been known for some time in the prior art and are used in large quantities for a wide range of applications where high-frequency sound signals have to be reproduced.
  • These known loudspeakers have in common that they have a magnetic pot in which a pole core is inserted centrally and at a distance from the inner surface of the magnetic pot.
  • the voice coil projects at this distance between the pole core and the inner surface of the magnetic pot.
  • the end of the voice coil facing away from the magnetic pot is connected to an approximately hemispherical membrane.
  • the voice coil is held centrally by a centering membrane on the pole core.
  • the membrane and centering membrane are usually designed as a one-piece component.
  • the magnetic pot is connected to a housing part, which, moreover, covers the membrane and the centering membrane on the side facing away from the magnetic pot.
  • the membrane is usually glued into the housing part.
  • the connection of the magnetic pot and the housing part is conventionally implemented as an adhesive connection.
  • the housing part can have acoustic equalizers in the area of the sound passage openings.
  • Such loudspeakers if they are to be used for the transmission of high-frequency sounds, usually have diaphragm diameters or voice coil diameters of approximately 19 to 25 millimeters (see, for example, Funkschau 1983, volume 7, page 99, page 100). These diameters require an appropriately large-sized magnetic pot with outside diameters of around 35 to 45 millimeters for acceptable sound reproduction. If the dome tweeter is to be reduced in size due to cramped installation conditions, this is not simply possible by simply reducing the diameter of the voice coil or magnetic pot. This is due to the fact that even with a reduced voice coil diameter, the size of the magnetic pot can only be reduced to a smaller extent. An improvement is achieved in that the pole core is partially formed from a high-energy material.
  • the loudspeaker can still be too large for very cramped installation conditions. This is due to the fact that the edge of the membrane, which is provided for gluing to the housing part, must be designed to be relatively wide in order to meet the requirements of a sufficient adhesive connection. But even if you ignore the effect of the width of the adhesive edge on the size of the speaker It has been shown in conventionally constructed loudspeakers with a voice coil diameter of ⁇ 19 mm that the efficiency of these reduced loudspeakers is greatly reduced.
  • the invention is therefore based on the object of specifying a dome tweeter loudspeaker which, with good efficiency, has a magnet pot outer diameter of less than or equal to 25 millimeters.
  • the diameter of the voice coil is ⁇ 19 mm
  • the housing part is connected to the magnetic pot exclusively by means of snaps arranged on the edge of the housing, in which the snap-on devices, with their molded-on latching hooks, engage around a collar arranged on the outer surface of the magnetic pot and that the one-piece membrane after locking of the magnetic pot is only fixed in position between the housing part and the magnetic pot in that the part of the membrane which rests on the magnetic pot is pressed onto the magnetic pot by means of the free end of the tube piece arranged on the housing part.
  • dome tweeters are designed in accordance with the invention, they can even be connected together with another loudspeaker as a coaxial loudspeaker arrangement due to their reduced size for further space saving.
  • Dome tweeter 10 are essentially formed by a one-piece housing part 11 made of plastic and a magnetic pot 12.
  • a pole core 14 is arranged in the interior of the magnetic pot 12, centered on the central axis of the loudspeaker 10 and at a distance from the inner surfaces 13 of the magnetic pot 12.
  • This pole core 14 is formed by an upper pole plate 15 and a disk 17 interposed between the pole plate 15 and the bottom 16 of the magnetic pot 12.
  • the disc 17 consists of a magnetically high-energy material.
  • the voice coil 19 projects into the distance 18 between the pole core 14 and the inner surface 13 of the magnetic pot 12.
  • a hemispherical membrane 21 is connected to the circumference 20 of the voice coil 19, which faces away from the bottom 16 of the magnetic pot 12, and thus covers the pole core 14.
  • the outer periphery of the membrane is surrounded by a wave-shaped edge, the so-called centering membrane 22, the outer edge of this centering membrane 22 standing on the edge 23 of the magnet pot 12.
  • This centering membrane 22 has the task of centering the voice coil 19 at a distance 18 between the pole core 14 and the inner surface 13 of the magnetic pot.
  • the membrane 21 and the centering membrane 22 are formed in one piece from a plastic film.
  • the side of the magnetic pot facing away from the bottom 16 of the magnetic pot 12, together with the membrane 21 and the centering membrane 22, is covered by an approximately pot-shaped housing part 11, the housing edge 24 encasing a circumferential collar 25 arranged on the outer surface of the magnetic pot 12.
  • the cover 26 of the housing part 11 has a sound outlet opening 27 opposite the membrane 21 on.
  • This opening 27 is conical and has its largest diameter on the side facing away from the magnet pot 12.
  • a pipe piece 28 running centrally to the central axis of the loudspeaker, the free end 29 of which stands on the edge 23 of the magnetic pot 12 when the housing part 11 and the magnetic pot 12 are connected.
  • the centering membrane 22 has a circumferential flange which, when the housing part 11 and the magnet pot 12 are assembled, is pressed from the free end 29 of the tube piece 28 onto the upper edge 23 of the magnet pot 12. In this case, there is no separate connection of the centering membrane 22 on the edge 23 of the magnet pot 12.
  • the connection of the magnet pot 12 and the housing part 11 is made Simplified further, since simply inserting the centering membrane 22 and the membrane 21 connected to it and the voice coil 19 means that the latter two components are already precisely positioned with respect to the distance 18 between the magnet pot 12 and the pole core 14.
  • An acoustic equalizer 30 is arranged centrally in the sound passage opening 27 and connected to the edge of the opening 27 by webs 31.
  • the housing edge 24, which encases a part of the outer lateral surface of the magnetic pot 12, has a plurality of spring-shaped catches 32 on its lateral surface. As illustrated in FIG. 3, these are each represented by two parallel and in the direction of the cover 26 extending slots 33 formed. The free end 34 of this catch 32 is provided with locking hooks 35.
  • the collar 25 arranged on the outer surface of the magnetic pot 12 causes the catches 32 to deflect elastically in the direction of the arrow .
  • suitable joining aids 36 must be arranged on the collar 25 and on the inner lateral surface of the housing edge 24 along the central axis of the loudspeaker 10, as illustrated in FIG. 2 .
  • the joining aids 36 illustrated in FIG. 2 are only examples. However, if joining aids 36 are provided, the magnet pot 12 is also fixed in position in the radial direction in the housing part 11.
EP91114500A 1990-10-06 1991-08-29 Haut-parleur haute fréquence en forme de calotte Expired - Lifetime EP0480160B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4031742A DE4031742A1 (de) 1990-10-06 1990-10-06 Kalotten-hochton-lautsprecher
DE4031742 1990-10-06

Publications (3)

Publication Number Publication Date
EP0480160A2 true EP0480160A2 (fr) 1992-04-15
EP0480160A3 EP0480160A3 (en) 1993-01-13
EP0480160B1 EP0480160B1 (fr) 1995-07-26

Family

ID=6415769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114500A Expired - Lifetime EP0480160B1 (fr) 1990-10-06 1991-08-29 Haut-parleur haute fréquence en forme de calotte

Country Status (4)

Country Link
US (1) US5150419A (fr)
EP (1) EP0480160B1 (fr)
JP (1) JPH04264900A (fr)
DE (2) DE4031742A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749265A1 (fr) * 1995-06-16 1996-12-18 P.H.L. Audio S.A. Haut-parleur pour fréquences élevées
WO1998058520A1 (fr) * 1997-06-19 1998-12-23 Goodmans Loudspeakers Limited Haut-parleurs
WO2007128748A1 (fr) * 2006-05-08 2007-11-15 Robert Bosch Gmbh Haut-parleur à calotte
EP3170319A4 (fr) * 2014-07-15 2018-05-02 Nokia Technologies Oy Transducteur acoustique

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3007469B2 (ja) * 1992-01-30 2000-02-07 東北パイオニア株式会社 スピーカ磁気回路
JP2905350B2 (ja) * 1992-11-18 1999-06-14 スター精密 株式会社 電気音響変換器
AT398355B (de) * 1993-02-26 1994-11-25 Koninkl Philips Electronics Nv Elektroakustischer wandler mit einem abschlussteil
DE29512102U1 (de) * 1995-07-27 1995-10-05 Nokia Deutschland Gmbh Magnetsystem
GB2322503B (en) * 1997-02-25 2000-11-01 Celestion Int Ltd Compression driver
DE19732185A1 (de) * 1997-07-26 1999-01-28 Nokia Deutschland Gmbh Lautsprecherkorb
JP3610774B2 (ja) * 1998-04-28 2005-01-19 松下電器産業株式会社 スピーカ
KR100373757B1 (ko) * 1998-07-21 2003-02-26 하만인터내셔날인더스트리스인코포레이티드 소형 전대역 스피커
JP4122602B2 (ja) * 1998-11-19 2008-07-23 ソニー株式会社 スピーカー装置
GB2359213B (en) 1999-10-29 2004-05-19 Kef Audio High frequency transducer
JP2001169386A (ja) * 1999-10-29 2001-06-22 Kh Technology Corp 放射ダイアフラムおよび高周波トランスデューサ
JP3619736B2 (ja) * 2000-02-25 2005-02-16 スター精密株式会社 スピーカ
JP2002152885A (ja) * 2000-11-14 2002-05-24 Sony Corp スピーカ装置
JP4557412B2 (ja) * 2000-11-20 2010-10-06 パナソニック株式会社 スピーカ
DE10207561C1 (de) * 2002-02-22 2003-07-24 Harman Becker Automotive Sys Kalottenlautsprecher
US9560452B2 (en) * 2007-07-25 2017-01-31 Lars Goller Cone tweeter membrane
US8374379B2 (en) 2007-08-30 2013-02-12 Jl Audio, Inc. Loudspeaker with replaceable motor assembly
US20150139475A1 (en) * 2013-11-20 2015-05-21 Kai Shuai Industrial Co., Ltd. Speaker decorative rim mounting structure
DE202014001433U1 (de) * 2014-02-19 2015-02-20 Harman Becker Automotive Systems Gmbh Lautsprecher
DE202014003034U1 (de) * 2014-04-02 2015-04-07 Harman Becker Automotive Systems Gmbh Lautsprecher
US9154864B1 (en) * 2014-04-30 2015-10-06 Harman International Industries, Inc. Speaker assembly
US9723410B2 (en) * 2014-07-08 2017-08-01 Harman International Industries, Incorporated Speaker assembly
CN104105035B (zh) * 2014-07-22 2018-10-09 慈溪市奇炳电子有限公司 一种高音驱动头
CN207070342U (zh) * 2017-07-18 2018-03-02 歌尔科技有限公司 一种扬声器
JP7243354B2 (ja) * 2019-03-22 2023-03-22 株式会社Ｊｖｃケンウッド ドーム型振動板、バランスドドーム振動板及びスピーカ
US20240107237A1 (en) * 2022-09-21 2024-03-28 Harman International Industries, Incorporated Speaker assembly with mechanically-coupled magnet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556639A1 (de) * 1974-12-16 1976-06-24 Matsushita Electric Ind Co Ltd Lautsprecher
FR2428952A3 (fr) * 1978-04-03 1980-01-11 Audax Haut-parleur electrodynamique a membrane convexe
EP0360061A2 (fr) * 1988-09-17 1990-03-28 Bayer Ag Membrane pour haut-parleur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358089A (en) * 1964-06-10 1967-12-12 Gen Electric Magnet assembly
DE2905566A1 (de) * 1979-02-14 1980-08-28 Standard Elektrik Lorenz Ag Universelles kalottenlautsprecher- bauelement
US4421956A (en) * 1981-09-29 1983-12-20 Peavey Electronics Corp. Loud speaker with minimized magnetic leakage
US4565905A (en) * 1982-04-28 1986-01-21 International Jensen Incoporated Loudspeaker construction
DE3241898A1 (de) * 1982-11-12 1984-07-19 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Elektrodynamischer wandler
US4591667A (en) * 1984-03-06 1986-05-27 Onkyo Kabushiki Kaisha Dome speaker with cut-out portions in the voice coil bobbin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556639A1 (de) * 1974-12-16 1976-06-24 Matsushita Electric Ind Co Ltd Lautsprecher
FR2428952A3 (fr) * 1978-04-03 1980-01-11 Audax Haut-parleur electrodynamique a membrane convexe
EP0360061A2 (fr) * 1988-09-17 1990-03-28 Bayer Ag Membrane pour haut-parleur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749265A1 (fr) * 1995-06-16 1996-12-18 P.H.L. Audio S.A. Haut-parleur pour fréquences élevées
FR2735646A1 (fr) * 1995-06-16 1996-12-20 Phl Audio Haut-parleur pour frequences elevees
US5875252A (en) * 1995-06-16 1999-02-23 P.H.L. Audio Loudspeaker for high frequencies
WO1998058520A1 (fr) * 1997-06-19 1998-12-23 Goodmans Loudspeakers Limited Haut-parleurs
WO2007128748A1 (fr) * 2006-05-08 2007-11-15 Robert Bosch Gmbh Haut-parleur à calotte
EP3170319A4 (fr) * 2014-07-15 2018-05-02 Nokia Technologies Oy Transducteur acoustique
US10212521B2 (en) 2014-07-15 2019-02-19 Nokia Technologies Oy Method of manufacturing a sound transducer

Also Published As

Publication number Publication date
EP0480160A3 (en) 1993-01-13
JPH04264900A (ja) 1992-09-21
DE59106080D1 (de) 1995-08-31
DE4031742A1 (de) 1992-04-09
EP0480160B1 (fr) 1995-07-26
US5150419A (en) 1992-09-22

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