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EP0685981B1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
EP0685981B1
EP0685981B1 EP95107543A EP95107543A EP0685981B1 EP 0685981 B1 EP0685981 B1 EP 0685981B1 EP 95107543 A EP95107543 A EP 95107543A EP 95107543 A EP95107543 A EP 95107543A EP 0685981 B1 EP0685981 B1 EP 0685981B1
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
component
voice coil
membrane
diaphragm
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.)
Expired - Lifetime
Application number
EP95107543A
Other languages
German (de)
English (en)
Other versions
EP0685981A3 (fr
EP0685981A2 (fr
Inventor
Stefan Geisenberger
Manfred Aigner
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.)
Harman Audio Electronic Systems GmbH
Original Assignee
Harman Audio Electronic Systems 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
Priority claimed from DE4422486A external-priority patent/DE4422486A1/de
Application filed by Harman Audio Electronic Systems GmbH filed Critical Harman Audio Electronic Systems GmbH
Publication of EP0685981A2 publication Critical patent/EP0685981A2/fr
Publication of EP0685981A3 publication Critical patent/EP0685981A3/fr
Application granted granted Critical
Publication of EP0685981B1 publication Critical patent/EP0685981B1/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Definitions

  • the invention is concerned with the formation of high temperature resistant Connections of loudspeaker components, in particular with the connection of loudspeaker membranes with voice coil carriers.
  • Loudspeaker membranes and voice coil carriers for loudspeakers are according to the state of the art, unless they are be formed in one piece, connected to each other by gluing.
  • the requirements that a such adhesive connection are also available known.
  • Such a connection should be easy, both Fabrics - even under thermal influence - firmly together connect and also be easy and quick to train.
  • voice coil former and loudspeaker membrane plastic can only partially solve the problems solve, because these materials in the desired temperature range do not have the necessary strength.
  • voice coil former and Speaker diaphragm cannot currently match the one you want Properties can be manufactured inexpensively, in particular it is not possible to use an aluminum speaker membrane or titanium together with the voice coil former in about one To train deep-drawing processes.
  • the invention has for its object a speaker specify where the various components of the speaker, especially voice coil former and loudspeaker membrane and, if provided, also a centering membrane that is environmentally compatible are connected to each other up to over 120 ° C, and which is nevertheless inexpensive to manufacture.
  • the components of the loudspeaker to be connected are provided with an ultrasonically weldable metal, at least on their mutually facing and intended surfaces, then the respective components of the loudspeaker can be connected to one another very easily using ultrasonic welding technology, provided the thickness of the respective metal layer is greater than about 8 ⁇ m .
  • the connection is particularly simple when the components to be connected are made entirely of ultrasonically weldable metal, since in this case there is no need to coat the surface areas provided for the connection.
  • connection can be made in welding technology between the voice coil former and the loudspeaker membrane, between the voice coil former and the centering membrane and between the loudspeaker diaphragm and the centering diaphragm alike run well. But this does not mean that only such connections between loudspeaker components in ultrasonic welding technology can be trained where it depends on a lower weight of the connection. Much more can also be the connection between the centering membrane and the loudspeaker basket is designed as an ultrasonic weld his.
  • Is the Isolation arrangement on one side with the loudspeaker membrane or the voice coil former and on the other side connected to a centering membrane made of metal can the centering membrane if, for example, from two or several parts not connected to each other is, as a contact bridge between the ends of the voice coil wire and the ends of the audio signal feed line.
  • Ceramic or polyimide materials have proven to be suitable insulation materials proven. Such substances are suitable Material thicknesses can be coated with aluminum or copper, for example.
  • Centering membranes and / or centering membranes made of non-metal, that have no mesh structure and therefore are of unbroken design with the first components of the loudspeaker can be connected when the connection provided edge has the border specified in claim 7.
  • FIG. 1 shows a section through a loudspeaker in a detail, with the representations to the right and left of the center line have different embodiments to the subject.
  • the left representation according to FIG. 1 shows a voice coil former 10, which at its top with the speaker membrane 11 is connected.
  • the loudspeaker diaphragm 11 and the voice coil former 10 are formed from aluminum, so that the surface areas in contact with each other 13.1 and 13.2 of the loudspeaker membrane 11 and the voice coil former 10 are made of materials that are ultrasonically welded are.
  • the cone region 14 of the loudspeaker diaphragm 11 is included the centering membrane 15 connected, being between the speaker membrane 11 and the centering membrane 15 an insulating arrangement 16 is arranged, on which in connection with Figure 2 is discussed in more detail.
  • the right representation according to FIG. 1 differs from the left representation in that the insulating arrangement 16 not between the centering diaphragm 15 and the loudspeaker diaphragm 11, but between the speaker membrane 11 and the voice coil bobbin 10 is arranged.
  • This arrangement has the advantage that the arrangement of the insulating arrangement 16 between the loudspeaker membrane 11 and the voice coil former 10 the heat conduction from the loudspeaker membrane 11 to the voice coil former 10 or to the voice coil 17 is more difficult is.
  • isolation arrangement 16 also between the centering membrane 15 and the Loudspeaker diaphragm 11 and between the loudspeaker diaphragm 11 and the voice coil former 10 can be provided, with which the advantages of the two individual representations according to FIG. 1 are united with each other.
  • FIG. 16 An insulating arrangement 16 is shown enlarged in FIG.
  • This insulation arrangement 16 is of a position one Isolators 18 formed, which in the exemplary embodiment discussed here is made of ceramic material.
  • This isolation arrangement 16, which is a second component of the speaker is within the meaning of claim 2, on the side of the Isolators 18, which the first component of the speaker - here the voice coil former 10 - faces a metal coating 19.1, which in the present case is made of Kufper is.
  • the surface area 13.2 of the metal coating 19.1 is with the surface area 13.1 formed of aluminum Voice coil former 10 using the ultrasonic welding technique connected.
  • Insulator 18 On the side facing away from the metal coating 19.1 Insulator 18 is another one also made of copper Metal coating 19.2 available, which does not match the metal coating 19.1 is conductively connected.
  • the surface area 13.3 of the metal coating is 19.2 with the surface area 13.4 of that made of aluminum Speaker membrane 11 also ultrasonically welded.
  • Each of the two metal coatings 19.1 and 19.2 has a thickness of 8 8 ⁇ m , while the thickness of the insulation layer 18 is approximately 1 mm.
  • the feasibility of the invention is not based on use of copper as metal for the metal coatings 19.1 and 19.2 limited. Rather, the respective metal coating can be made of aluminum or nickel. Good results are also used with a polyimide film as insulator 18 achieved, which to form an insulating arrangement 16 on both sides is coated with aluminum.
  • the isolator arrangement 18 shown in FIG. 2 essentially shows the installation situation according to the illustration on the right Figure 1. Should the centering membrane 15 with the speaker membrane 11 not be conductively connected (left illustration according to Figure 1), the insulating arrangement 16 according to Figure 2 is also in usable in this embodiment. In this case it is Loudspeaker diaphragm 11 is the first component of the loudspeaker in The meaning of claim 2, while the insulating arrangement 16 the second component of the loudspeaker within the meaning of claim 2 is.
  • Figure 3 shows a further representation of a loudspeaker in the Cut.
  • Both components 10 and 11 just mentioned are made of aluminum manufactured and ultrasonically welded together.
  • an insulating arrangement 16 according to Figure 2 between the components 10 and 11 may be provided (not shown in Figure 3).
  • Figure 4 shows a connection of the voice coil bobbin 10 with the loudspeaker diaphragm 11, the illustrations on the right and left of the center line different embodiments affect.
  • the voice coil former 10 and the loudspeaker membrane 11 are made of aluminum in the two exemplary embodiments and without an intervening isolation arrangement 16 connected to each other by ultrasonic welding.
  • the voice coil former 10 is longer trained and thus projects lower with its upper end 20 into the cone formed by the loudspeaker membrane 11.
  • At the upper end 20 of the voice coil bobbin 10 is one closing the inner cross section of the voice coil bobbin 10 and also cup-shaped made of aluminum Cap 21 inserted and connected.
  • the left side of the illustration according to FIG. 4 shows one Dust cap 21, which is also made of aluminum and is shaped like a dome.
  • This dust cap 21 is with its circumferential flange 23 with the inside the speaker diaphragm 11 by ultrasonic welding connected.
  • a centering membrane 15 is present and with the voice coil bobbin 10 or the loudspeaker membrane 11 connected, such a connection according to the state of the Technology generally carried out as an adhesive connection.
  • a connection between the centering membrane 15 and the voice coil former 10 or the loudspeaker membrane 11 indicated which the temperature problems solves.
  • centering membrane 15 with these components 10 and 11 very easily connected in ultrasonic welding if at least the surface areas 13 of the centering membrane 15, which with the respective component 10 or 11th are connected, also from an ultrasonically weldable Are made of metal.
  • centering membranes 15 are conventional are designed as textile or plastic mesh the producibility of an ultrasonically weldable coating on such materials very expensive and only realizable with considerable effort.
  • this material can be applied by using galvanic process very easily with another ultrasonic weldable Metal, for example with the metal of the voice coil bobbin 10 are coated.
  • Penetrate Areas of the strip 24 the braid openings 25 in the centering membrane 15 is a connection between the two Given parts 15 and 24, which allows both parts as Unity. Should one of the two parts 15 and 24 formed unit with the voice coil former 10 or Speaker membrane 11 are ultrasonically welded, it is essential that the centering membrane 15 with the surface side on the voice coil bobbin 10 or on the loudspeaker membrane 11 is applied, which faces away from the strip 24. This is because the areas of the strip 24 that the Pass through braid openings 25, not yet suitable on their own are; the centering membrane 15 under mechanical stress permanently, for example with the voice coil bobbin 10 connect.
  • a particularly stable attachment between the centering membrane 15 and the respective component 10 or 11 of the speaker can be carried out if the centering membrane is embossed 15 the strip 24 inserted into the tool is softened by means of ultrasound. This softening can also after connecting the centering membrane 15 to the strip 24 be carried out after the embossing step.
  • the metal of the Strip 24 the braid openings 25 such that also on the side of the centering membrane facing away from the strip 24 15 forms a consistently thin metal film 26. The latter is shown schematically in Figure 5c. Because the metal film 26 and the remaining strip 24 have approximately the same thickness, it is for welding to the speaker diaphragm 11 or the voice coil bobbin 10 regardless of whether the metal film 26 or the strip 24 is used.
  • Centering membrane 15 is, for example, a steel wire mesh educated.
  • the thickness of the wire is approximately 0.1 mm.
  • the Centering membrane 15 can also be made of a non-metal his. When using non-metallic materials the procedure should be modified so that no Strip is used, which is pressed through the braid openings becomes. Instead, the one made from a non-metallic Material formed centering membranes 15 the edge the centering diaphragm 15, which for connection to the speaker diaphragm 11 or the voice coil former 10 connected should be of an approximately U-shaped edging 27 made of ultrasonically weldable metal. The latter is shown in Figure 5d.
  • Bezel 27 is formed by an L-shaped elbow is bent around the edge 28 of the centering membrane 15, so that after bending two legs 29 and 30 of the U-shaped Pinch the edge 28.
  • For additional Solidification of the connection can be made together with the skirt 27 with the centering membrane 15 also with a step-shaped embossing beads (not shown) his.
  • the centering membrane 15 not necessarily formed from a broken mesh have to be.
  • the bezel 27 is not on centering membranes 15 limited from non-metal, but can also at Centering membranes 15 made of metal can be used.
  • connection between the one provided with a border 27 Centering membrane 15 and, for example, the speaker membrane 11 is realized such that the leg 30 of the border 27 on an anvil 31 serving as counterelectrode is launched.
  • the sonotrode 32 is then used for welding placed on the inside 33 of the speaker diaphragm 11 so that the speaker membrane 11, the legs 29 and 30 of the border 27 and the edge 28 against the anvil 31 be pressed.
  • the leg 29 connects the Border 27 with the loudspeaker diaphragm 11 used centering membrane 15 made of an openwork mesh formed
  • the metal of the bezel 27 penetrates the Braid openings 25 (not shown in Figure 5d) and connects so the two legs 29 and 30 through the centering membrane 15 through.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Claims (7)

  1. Haut-parleur avec une membrane (11) et un support de bobine d'oscillation (10),
    caractérisé en ce que,
    au moins une zone superficielle (13.1) d'un premier composant du haut-parleur et au moins une zone superficielle (13.2) d'un deuxième composant du haut-parleur sont réalisées en métal, susceptible d'être reliées entre elles par soudage par ultrasons,
    le premier et le deuxième composant sont soudés par ultrasons l'un à l'autre par leurs zones superficielles respectives (13 .1, 13.2),
    le premier composant du haut-parleur est soit le support de bobine (10) soit une membrane du haut-parleur (11),
    le second composant du haut-parleur est, ou bien le support de la bobine (10) ou une membrane de centrage (15),
    le premier de ces composants est relié à un autre deuxième de ces composants du haut-parleur.
  2. Haut-parleur avec une membrane de haut-parleur (11) et un support de bobine d'oscillation (10),
    caractérisé en ce que,
    au moins une zone superficielle(13.1) d'un premier composant du haut-parleur et au moins une zone superficielle (13.2) d'un deuxième composant du haut-parleur sont réalisées en un métal susceptible de les relier entre elles par soudage par ultrasons,
    le premier et le deuxième composant sont soudés par ultrasons l'un à l'autre par leurs zones superficielles respectives (13.1, 13.2),
    le premier composant du haut-parleur est soit le support de bobine oscillante (10) soit la membrane du haut-parleur (11),
    le deuxième composant du haut-parleur est un dispositif d'isolation (16) formé à partir d'une couche d'isolateur (18) et qui, sur sa face opposée à la zone superficielle (13.2), reçoit un autre revêtement métallique (19.2) également soudable par ultrasons,
    le revêtement métallique (19.2) de l'isolateur correspondant (18) est relié à une zone superficielle (13.4) constituée d'un métal également soudable par ultrasons, d'une pièce d'un haut-parleur différente du premier composant correspondant.
  3. Haut-parleur suivant la revendication 1,
    caractérisé en ce que
    le premier composant au moins est constitué entièrement d'un métal soudable par ultrasons.
  4. Haut-parleur suivant la revendication 2,
    caractérisé en ce que
    le dispositif d'isolation (16) présente comme isolateur (18), une couche de céramique.
  5. Haut-parleur suivant la revendication 2,
    caractérisé en ce que
    le dispositif d'isolation (16) présente comme isolateur (18) une couche de polyimide.
  6. Haut-parleur suivant la revendication 1,
    caractérisé en ce que
    si le deuxième composant est la membrane de centrage 15, la zone de cette membrane de centrage 15 prévue pour être reliée au premier composant (10, 11) du haut-parleur, présente une couche métallique soudable par ultrasons, qui est appliquée au moins sur une face superficielle de la membrane de centrage (15) et qui diffuse dans des orifices (25) d'un tissu équipant la membrane de centrage (15).
  7. Haut-parleur suivant la revendication 1,
    caractérisé en ce que
    si le deuxième composant est la membrane de centrage (15), la zone de cette membrane de centrage (15) prévue destinée à être reliée au premier composant (10, 11) du haut-parleur, possède une bordure (27) en métal soudable par ultrasons, qui entoure le bord (28) de la membrane de centrage (15).
EP95107543A 1994-06-01 1995-05-18 Haut-parleur Expired - Lifetime EP0685981B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4419253 1994-06-01
DE4419253 1994-06-01
DE4422486 1994-06-28
DE4422486A DE4422486A1 (de) 1994-06-01 1994-06-28 Lautsprecher

Publications (3)

Publication Number Publication Date
EP0685981A2 EP0685981A2 (fr) 1995-12-06
EP0685981A3 EP0685981A3 (fr) 1996-06-05
EP0685981B1 true EP0685981B1 (fr) 2001-08-29

Family

ID=25937100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107543A Expired - Lifetime EP0685981B1 (fr) 1994-06-01 1995-05-18 Haut-parleur

Country Status (4)

Country Link
US (1) US5699439A (fr)
EP (1) EP0685981B1 (fr)
JP (1) JPH0847089A (fr)
AT (1) ATE205040T1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336499B (en) * 1998-03-18 2002-06-12 Nokia Mobile Phones Ltd Audio diaphragm mounting arrangements in radio telephone handsets
AU4419600A (en) * 1999-05-06 2000-11-21 New Transducers Limited Vibration exciter
US6372066B1 (en) 1999-05-06 2002-04-16 New Transducers Limited Vibration exciter
JP3619736B2 (ja) 2000-02-25 2005-02-16 スター精密株式会社 スピーカ
DE60138583D1 (de) * 2000-02-25 2009-06-18 Star Mfg Co Lautsprecher
US20070053545A1 (en) * 2005-09-07 2007-03-08 Steff Lin Speaker
GB2518660A (en) * 2013-09-27 2015-04-01 Pss Belgium Nv Loudspeaker
KR101534470B1 (ko) * 2014-04-25 2015-07-08 에스텍 주식회사 압전 스피커
GB201513555D0 (en) 2015-07-31 2015-09-16 Pss Belgium Nv Audio system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027412A (en) * 1985-10-11 1991-06-25 Pioneer Electronic Corporation Voice coil with rectangular coil wire and foil leads

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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
SU522555A1 (ru) * 1975-01-02 1976-07-25 Специальное Конструкторское Бюро Кировоградского Завода Радиоизделий Головка электродинамического громкоговорител
AT338351B (de) * 1975-04-29 1977-08-25 Philips Nv Elektroakustischer wandler, verfahren zur herstellung eines solchen wandlers und vorrichtung zur durchfuhrung solcher verfahren
NL8200416A (nl) * 1982-02-04 1983-09-01 Philips Nv Vlakmembraan omzetter en werkwijze voor het vervaardigen van een dergelijke omzetter.
JPS58209293A (ja) * 1982-05-31 1983-12-06 Hitachi Ltd スピ−カ
US4590333A (en) * 1984-06-14 1986-05-20 John Strohbeen Multidriver loudspeaker
JPS61220592A (ja) * 1985-03-26 1986-09-30 Kozo Sakane スピ−カ装置
EP0251057A1 (fr) * 1986-06-21 1988-01-07 EWD Electronic-Werke Deutschland GmbH Haut-parleur
DE3862617D1 (de) * 1987-07-03 1991-06-06 Electronic Werke Deutschland Membran fuer einen lautsprecher.
US5062140A (en) * 1988-04-27 1991-10-29 Sony Corporation Induction speaker
NL9002510A (nl) * 1990-11-16 1992-06-16 Stage Accompany B V Luidspreker met koeling.
AT397898B (de) * 1991-09-25 1994-07-25 Akg Akustische Kino Geraete Membran für elektrodynamische wandler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027412A (en) * 1985-10-11 1991-06-25 Pioneer Electronic Corporation Voice coil with rectangular coil wire and foil leads

Also Published As

Publication number Publication date
ATE205040T1 (de) 2001-09-15
JPH0847089A (ja) 1996-02-16
US5699439A (en) 1997-12-16
EP0685981A3 (fr) 1996-06-05
EP0685981A2 (fr) 1995-12-06

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