EP0015013A1 - Universal dome loudspeaker construction element - Google Patents

Universal dome loudspeaker construction element Download PDF

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Publication number
EP0015013A1
EP0015013A1 EP80200068A EP80200068A EP0015013A1 EP 0015013 A1 EP0015013 A1 EP 0015013A1 EP 80200068 A EP80200068 A EP 80200068A EP 80200068 A EP80200068 A EP 80200068A EP 0015013 A1 EP0015013 A1 EP 0015013A1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
dome
magnet system
molded part
voice coil
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.)
Withdrawn
Application number
EP80200068A
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German (de)
French (fr)
Inventor
Kurt Kolbe
Hermann Gruber
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.)
Alcatel Lucent Deutschland AG
International Standard Electric Corp
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0015013A1 publication Critical patent/EP0015013A1/en
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a spherical speaker, consisting of a permanent magnet system, a membrane holder arranged on the permanent magnet system, to which a spherical membrane with a voice coil is to be attached.
  • dome loudspeakers are known (DE-PS 21 10 446 and catalog "Loudspeaker 1978/79 of ITT Baurii Group Europe pages 112 to 120).
  • the membrane holder is designed as a disk-shaped loudspeaker basket, in which the fastening openings, the sound opening and Limiting webs for the installation of the spherical speaker are integrated into a baffle from the front or rear.
  • a disadvantage of the known dome speaker regardless of whether it is designed as a tweeter or mid-range dome speaker, is that its installation dimensions are fixed. But especially in the main area of application of the dome loudspeakers, namely when installed in loudspeaker boxes, the manufacturers of loudspeaker boxes would prefer dome loudspeakers whose installation dimensions are neutral with regard to the dimensions and / or the design of the loudspeaker box. This can be achieved with the known dome loudspeakers only with considerable effort because a large number of disk-shaped loudspeaker baskets of the type mentioned at the beginning Art would have to be produced, each requiring its own expensive tool.
  • the object on which the invention is based is therefore to create a dome loudspeaker component which, although a fully functional dome loudspeaker, has no fastening plate, no three-dimensionally designed sound opening and no boundary webs.
  • the membrane holder is designed as a flat molded part, which is matched on its inside to the pole plate of the permanent magnet system, with the circular central opening of which the spherical membrane is permanently connected to the voice coil.
  • the new dome loudspeaker component is, within very wide limits, independent of its later use, for example in a loudspeaker box.
  • it can be attached to a baffle directly from the rear without a mounting plate, wherein an individually dimensioned sound opening can be incorporated into the baffle.
  • the new dome speaker component can also be supplemented by an individually designed mounting plate according to the physical conditions or aesthetic requirements of the product.
  • several dome loudspeaker components for example two tweeters or one tweeter and one mid-range speaker, can be attached to a common, individually designed fastening plate.
  • the new dome loudspeaker component can be optimally dimensioned - regardless of its later location - and in large quantities - and therefore economically.
  • the dome loudspeaker component has a known permanent magnet system 1, consisting of an annular ceramic permanent magnet ring, the pole core inserted into the base plate and the annular disk-shaped pole plate.
  • the dome loudspeaker component only consists of the molded part 3 serving as a diaphragm holder, in the central circular opening of which the dome diaphragm 5 is fixed, for example glued, with a voice coil 6.
  • the molded part is made of non-magnetizable metal, such as aluminum or high-temperature-resistant plastic, such as polyamide.
  • annular recess is formed on the back of the molded part 3, which forms an annular channel 7 in the finished dome loudspeaker component, which on three sides of the recess of the molded part 3 and is bounded on the fourth side by the surface of the pole plate.
  • the annular channel 7 is connected to the air gap via a few slots 11 (FIG. 2) in its boundary wall facing the air gap.
  • the molded part is provided with fastening openings 10 so that it can be fastened to the permanent magnet system by means of screws or rivets.
  • the lead-out of the voice coil connections takes place in that connecting leads 9 are embedded in flat, radially running grooves in the completely flat molded part outer surface, which are connected at one end to the connecting eyes 4 and at the other end to the connections of the voice coil.
  • the pole core of the permanent magnet system 1 can be provided with a cup-shaped cavity 8, the opening of which is closed with an air-permeable disk 2, for example made of foamed plastic.
  • the air volume located in the cavity 8, together with the air volume in the air gap and the annular channel 7, causes the calotte membrane 5 to be guided smoothly and counteracts an increase in impedance at the resonance frequency.
  • the proposed dome loudspeaker component is a fully functional dome loudspeaker, although of a very simple construction and therefore inexpensive to manufacture. It can be unchanged from the back into one Baffle to be installed. However, it can also be attached individually or in groups to an individually designed mounting plate and arranged together with this on a baffle.

Abstract

A dome loudspeaker component of simple construction consisting of a permanent magnet system and a moulded part to which the dome diaphragm with voice coil is firmly connected. <IMAGE>

Description

Die Erfindung betrifft einen Kalottenlautsprecher, bestehend aus einem Dauermagnetsystem, einer auf dem Dauermagnetsystem angeordneten Membranhalterung, an der eine Kalottenmembran mit Schwingspule zu befestigen ist.The invention relates to a spherical speaker, consisting of a permanent magnet system, a membrane holder arranged on the permanent magnet system, to which a spherical membrane with a voice coil is to be attached.

Derartige Kalottenlautsprecher sind bekannt (DE-PS 21 10 446 und Katalog "Lautsprecher 1978/79 der ITT Bauelemente Gruppe Europa Seiten 112 bis 120). Bei den bekannten Kalottenlautsprechern ist die Membranhalterung als scheibenförmiger Lautsprecherkorb ausgebildet, in den gleichzeitig die Befestigungsöffnungen, die Schallöffnung und Begrenzungsstege für den Einbau des Kalottenlautsprechers in eine Schallwand von der Vorder- oder Rückseite integriert sind. Eine derartige Gestaltung der Membranhalterung erscheint zwar zunächst zweckmäßig, ist es genauer betrachtet jedoch nicht.Such dome loudspeakers are known (DE-PS 21 10 446 and catalog "Loudspeaker 1978/79 of ITT Bauelemente Group Europe pages 112 to 120). In the known dome loudspeakers, the membrane holder is designed as a disk-shaped loudspeaker basket, in which the fastening openings, the sound opening and Limiting webs for the installation of the spherical speaker are integrated into a baffle from the front or rear.

Nachteilig bei dem bekannten Kalottenlautsprecher, gleichgültig ob als Hochton- oder Mitteltonkalottenlautsprecher ausgelegt, ist, daß seine Einbaumaße festgelegt sind. Gerade aber auf dem Hauptanwendungsgebiet der Kalottenlautsprecher, nämlich beim Einbau in Lautsprecherboxen würden die Hersteller von Lautsprecherboxen Kalottenlautsprecher bevorzugen, deren Einbaumaße hinsichtlich der Abmessungen und/oder des Designs der Lautsprecherbox neutral sind. Dies läßt bei den bekannten Kalottenlautsprechern nur mit erheblichem Aufwand verwirklichen, weil dazu eine Vielzahl von scheibenförmigen Lautsprecherkörben der eingangserwähnten Art hergestellt werden müßten, wobei für jeden ein eigenes teures Werkzeug erforderlich ist.A disadvantage of the known dome speaker, regardless of whether it is designed as a tweeter or mid-range dome speaker, is that its installation dimensions are fixed. But especially in the main area of application of the dome loudspeakers, namely when installed in loudspeaker boxes, the manufacturers of loudspeaker boxes would prefer dome loudspeakers whose installation dimensions are neutral with regard to the dimensions and / or the design of the loudspeaker box. This can be achieved with the known dome loudspeakers only with considerable effort because a large number of disk-shaped loudspeaker baskets of the type mentioned at the beginning Art would have to be produced, each requiring its own expensive tool.

Die der Erfindung zugrunde liegende Aufgabe besteht deshalb darin, ein Kalottenlautsprecher-Bauelement zu schaffen, das zwar einen voll funktionsfähigen Kalottenlautsprecher darstellt, aber keine Befestigungsplatte, keine dreidimensional gestaltete Schallöffnung und keine Begrenzungsstege besitzt.The object on which the invention is based is therefore to create a dome loudspeaker component which, although a fully functional dome loudspeaker, has no fastening plate, no three-dimensionally designed sound opening and no boundary webs.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß die Membranhalterung als flaches, auf ihrer Innenseite an die Polplatte des Dauermagnetsystems angepaßtes Formteil ausgebildet ist, mit dessen kreisförmiger zentraler Öffnung die Kalottenmembran mit Schwingspule dauerhaft verbunden ist.This object is achieved in that the membrane holder is designed as a flat molded part, which is matched on its inside to the pole plate of the permanent magnet system, with the circular central opening of which the spherical membrane is permanently connected to the voice coil.

Das neue Kalottenlautsprecher-Bauelement ist in sehr weiten Grenzen von seinem späteren Einsatz, beispielsweise in einer Lautsprecherbox, unabhängig. Es kann beispielsweise ohne eine Befestigungsplatte direkt von der Rückseite an einer Schallwand befestigt werden, wobei-eine individuell dimensionierte Schallöffnung in die Schallwand eingearbeitet sein kann. Das neue Kalottenlautsprecher-Bauelement kann aber auch von jedem Anwender entsprechend den bei seinem Produkt vorliegenden physikalischen Gegebenheiten oder seinen ästhetischen Vorstellungen durch eine individuell gestaltete Befestigungsplatte ergänzt werden. Weiterhin können mehrere Kalottenlautsprecher-Bauelemente, beispielsweise zwei Hochtöner oder ein Hoch- und ein Mitteltöner, auf einer gemeinsamen individuell gestalteten Befestigungsplatte befestigt werden.The new dome loudspeaker component is, within very wide limits, independent of its later use, for example in a loudspeaker box. For example, it can be attached to a baffle directly from the rear without a mounting plate, wherein an individually dimensioned sound opening can be incorporated into the baffle. The new dome speaker component can also be supplemented by an individually designed mounting plate according to the physical conditions or aesthetic requirements of the product. Furthermore, several dome loudspeaker components, for example two tweeters or one tweeter and one mid-range speaker, can be attached to a common, individually designed fastening plate.

In jedem Fall kann das neue Kalottenlautsprecher-Bauelement - ohne Rücksichtnahme auf seinen späteren Einsatzort-optimal dimensioniert und in großen Stückzahlen - und damit wirtschaftlich - hergestellt werden.In any case, the new dome loudspeaker component can be optimally dimensioned - regardless of its later location - and in large quantities - and therefore economically.

Weitere vorteilhafte Einzelheiten des neuen Lautsprecher-Bauelementes sind in den Ansprüchen 2 bis 5 enthalten, und es ist in den Figuren 1 und 2 nachstehend anhand eines Ausführungsbeispieles erläutert. Es zeigen:

  • Fig. 1 einen Längsschnitt durch das Kalottenlautsprecher-Bauelement in Explosionsdarstellung
  • und Fig. 2 eine Draufsicht auf die Vorderseite des Bauelementes
Further advantageous details of the new loudspeaker component are contained in claims 2 to 5, and it is explained in FIGS. 1 and 2 below using an exemplary embodiment. Show it:
  • Fig. 1 shows a longitudinal section through the dome speaker component in an exploded view
  • and FIG. 2 shows a plan view of the front of the component

Wie aus Fig. 1 ersichtlich, besitzt das Kalottenlautsprecher-Bauelement eine bekanntes Dauermagnetsystem 1, bestehend aus einem ringförmigen keramischen Dauermagnetring, dem in die Bodenplatte eingesetzten Polkern und der ringscheibenförmigen Polplatte. Darüberhinaus besteht das Kalottenlautsprecher-Bauelement nur noch aus dem als Membranhalterung dienenden Formteil 3 in dessen zentraler kreisförmiger Öffnung die Kalottenmembran 5 mit Schwingspule 6 befestigt, beispielsweise festgeklebt, ist. Das Formteil ist aus nicht magnetisierbarem Metall, wie Aluminium oder hochtemperaturfestem Kunststoff, wie Polyamid, hergestellt. Auf der Rückseite des Formteils 3 ist eine ringförmige Vertiefung angeformt, welche beim fertigen Kalottenlautsprecher-Bauelement einen ringförmigen Kanal 7 bildet, der auf drei Seiten von der Vertiefung des Formteils 3 und auf der vierten Seite von der Oberfläche der Polplatte begrenzt ist. Der ringförmige Kanal 7 steht über wenige Schlitze 11 (Fig. 2) in seiner dem Luftspalt zugewandten Begrenzungswand mit dem Luftspalt in Verbindung.As can be seen from FIG. 1, the dome loudspeaker component has a known permanent magnet system 1, consisting of an annular ceramic permanent magnet ring, the pole core inserted into the base plate and the annular disk-shaped pole plate. In addition, the dome loudspeaker component only consists of the molded part 3 serving as a diaphragm holder, in the central circular opening of which the dome diaphragm 5 is fixed, for example glued, with a voice coil 6. The molded part is made of non-magnetizable metal, such as aluminum or high-temperature-resistant plastic, such as polyamide. An annular recess is formed on the back of the molded part 3, which forms an annular channel 7 in the finished dome loudspeaker component, which on three sides of the recess of the molded part 3 and is bounded on the fourth side by the surface of the pole plate. The annular channel 7 is connected to the air gap via a few slots 11 (FIG. 2) in its boundary wall facing the air gap.

Wie aus Fig. 2 weiter hervorgeht, ist das Formteil mit Befestigungsöffnungen 10 versehen, so daß es mittels Schrauben oder Nieten auf dem Dauermagnetsystem befestigt werden kann. Die Herausführung der Schwingspulehanschlüsse erfolgt dadurch, daß in flache, radial verlaufende Nuten in der völlig ebenen Formteil außenfläche Anschlußlitzen 9 eingebettet sind, die an ihrem einen Ende mit den Anschlußösen 4 und am anderen Ende mit den Anschlüssen der Schwingspule verbunden sind.As is further apparent from Fig. 2, the molded part is provided with fastening openings 10 so that it can be fastened to the permanent magnet system by means of screws or rivets. The lead-out of the voice coil connections takes place in that connecting leads 9 are embedded in flat, radially running grooves in the completely flat molded part outer surface, which are connected at one end to the connecting eyes 4 and at the other end to the connections of the voice coil.

Wie weiterhin aus Fig. 1 noch erkennbar, kann der Polkern des Dauermagnetsystems 1 mit einem topfförmigen Hohlraum 8 versehen sein, dessen öffnung mit einer luftdurchlässigen Scheibe 2, beispielsweise aus geschäumtem Kunststoff, verschlossen ist.As can also be seen from FIG. 1, the pole core of the permanent magnet system 1 can be provided with a cup-shaped cavity 8, the opening of which is closed with an air-permeable disk 2, for example made of foamed plastic.

Das im Hohlraum 8 befindliche Luftvolumen bewirkt zusammen mit dem Luftvolumen im Luftspalt und dem ringförmigen Kanal 7 eine weiche Führung der Kalottenmembran 5 und wirkt einer Scheinwiderstandserhöhung bei der Resonanzfrequenz entgegen.The air volume located in the cavity 8, together with the air volume in the air gap and the annular channel 7, causes the calotte membrane 5 to be guided smoothly and counteracts an increase in impedance at the resonance frequency.

Das vorgeschlagene Kalottenlautsprecher-Bauelement ist, obwohl sehr einfach aufgebaut und daher preiswert herstellbar, ein voll funktionsfähiger Kalottenlautsprecher. Er kann in unveränderter Form von der Rückseite in eine Schallwand eingebaut werden. Er kann aber auch einzeln oder zu mehreren an einer individuell gestalteten Befestigungcplatte befestigt und zusammen mit dieser an einer Schallwand angeordnet werden.The proposed dome loudspeaker component is a fully functional dome loudspeaker, although of a very simple construction and therefore inexpensive to manufacture. It can be unchanged from the back into one Baffle to be installed. However, it can also be attached individually or in groups to an individually designed mounting plate and arranged together with this on a baffle.

BezugszeichenReference numerals

  • 1. Dauermagnetsystem1. Permanent magnet system
  • 2. luftdurchlässige Scheibe2. Air-permeable pane
  • 3. Formteil3. molded part
  • 4. Anschlußösen4. Connection eyelets
  • 5. Kalottenmembran5. Dome membrane
  • 6. Schwingspule6. Voice coil
  • 7. ringförmiger Kanal7. annular channel
  • 8. Hohlraum8. Cavity
  • 9. Anschlußlitze9. Connecting wire
  • 10. Befestigungsöffnungen10. Mounting holes
  • 11. Schlitz11. slot

Claims (5)

1) Kalottenlautsprecher, bestehend aus einem Dauermagnetsystem, einer auf dem Dauermagnetsystem angeordneten Membranhalterung, an der eine Kalottenmembran mit Schwingspule zu befestigen ist,
dadurch gekennzeichnet, daß die Membranhalterung als flaches, auf ihrer Innenseite an die Polplatte des Dauermagnetsystems (1) angepaßtes Formteil (3) ausgebildet ist, mit dessen kreisförmiger zentraler Öffnung die Kalottenmembran mit Schwingspule (6) dauerhaft verbunden ist.1) dome speaker, consisting of a permanent magnet system, a membrane holder arranged on the permanent magnet system, to which a dome membrane with voice coil is to be attached,
characterized in that the membrane holder is designed as a flat molded part (3), which is matched on its inside to the pole plate of the permanent magnet system (1), with the circular central opening of which the spherical membrane is permanently connected to the voice coil (6). 2) Kalottenlautsprecher nach Anspruch 1,
dadurch gekennzeichnet, daß die äußere Oberfläche des Formteil s (3) völlig eben ausgebildet und sein Durchmesser nur geringfügig größer als der Durchmesser des Dauermagnetsystems (1) ist.2) dome speaker according to claim 1,
characterized in that the outer surface of the molded part s (3) is completely flat and its diameter is only slightly larger than the diameter of the permanent magnet system (1). 3) Kalottenlautsprecher nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das Formteil (3) auf der Innenseite eine einen ringförmigen Kanal (7) bildende Vertiefung besitzt, welche über Schlitze (11) Verbindung mit dem Luftspalt des Dauermagnetsystems (1) aufweist.3) dome loudspeaker according to claims 1 and 2, characterized in that the molded part (3) on the inside of an annular channel (7) forming Has recess, which has slots (11) connection to the air gap of the permanent magnet system (1). 4) KaJottenlautsprecher nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Polkern des Dauermagnetsystems (1) mit einem topfförmigen Hohlraum (8) versehen ist, der mit einer luftdurchlässigen Scheibe (2) abgedeckt ist.4) KaJotten speaker according to claims 1 to 3, characterized in that the pole core of the permanent magnet system (1) is provided with a cup-shaped cavity (8) which is covered with an air-permeable disc (2). 5) Kalottenlautsprecher nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß in radial in der Oberfläche des Formteils (3) verlaufende Vertiefungen Anschlußlitzen (9) eingebettet sind, von denen das eine Ende mit den Anschlüssen der Schwingspule und das andere Ende mit im Rand des Formteils (3) verankerten Anschlußösen (4) verbunden ist.5) spherical speaker according to claims 1 to 4, characterized in that in the radially in the surface of the molded part (3) extending recesses lead wires (9) are embedded, of which one end with the connections of the voice coil and the other end with in the edge the molded part (3) anchored connecting eyes (4) is connected.
EP80200068A 1979-02-14 1980-01-24 Universal dome loudspeaker construction element Withdrawn EP0015013A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2905566A DE2905566A1 (en) 1979-02-14 1979-02-14 UNIVERSAL CALOTE SPEAKER COMPONENT
DE2905566 1979-02-14

Publications (1)

Publication Number Publication Date
EP0015013A1 true EP0015013A1 (en) 1980-09-03

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Application Number Title Priority Date Filing Date
EP80200068A Withdrawn EP0015013A1 (en) 1979-02-14 1980-01-24 Universal dome loudspeaker construction element

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EP (1) EP0015013A1 (en)
JP (1) JPS55130300A (en)
DE (1) DE2905566A1 (en)
DK (1) DK60880A (en)
NO (1) NO800275L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579110B (en) * 2002-09-04 2010-04-28 松下电器产业株式会社 Speaker

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950196U (en) * 1982-09-27 1984-04-03 ティーオーエ株式会社 Loudspeaker drive unit
JPS6372992U (en) * 1986-10-31 1988-05-16
DE4031742A1 (en) * 1990-10-06 1992-04-09 Nokia Unterhaltungselektronik CALOTH HIGH TONE SPEAKER
JP3562383B2 (en) * 1998-06-02 2004-09-08 株式会社村田製作所 Speaker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079471A (en) * 1961-03-01 1963-02-26 Ampex Loudspeaker
DE1817431A1 (en) * 1967-12-30 1969-08-14 Nippon Musical Instruments Mfg Tweeter
US3780232A (en) * 1971-01-04 1973-12-18 Rola Celestion Ltd Loudspeaker diaphragm
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
GB1371338A (en) * 1971-12-09 1974-10-23 Emi Ltd Loudspeakers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079471A (en) * 1961-03-01 1963-02-26 Ampex Loudspeaker
DE1817431A1 (en) * 1967-12-30 1969-08-14 Nippon Musical Instruments Mfg Tweeter
US3780232A (en) * 1971-01-04 1973-12-18 Rola Celestion Ltd Loudspeaker diaphragm
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
GB1371338A (en) * 1971-12-09 1974-10-23 Emi Ltd Loudspeakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579110B (en) * 2002-09-04 2010-04-28 松下电器产业株式会社 Speaker

Also Published As

Publication number Publication date
NO800275L (en) 1980-08-15
DE2905566A1 (en) 1980-08-28
DK60880A (en) 1980-08-15
JPS55130300A (en) 1980-10-08

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