EP1207716B1 - Molded part for holding the driver of a flat diaphragm loudspeaker - Google Patents

Molded part for holding the driver of a flat diaphragm loudspeaker Download PDF

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Publication number
EP1207716B1
EP1207716B1 EP01125046A EP01125046A EP1207716B1 EP 1207716 B1 EP1207716 B1 EP 1207716B1 EP 01125046 A EP01125046 A EP 01125046A EP 01125046 A EP01125046 A EP 01125046A EP 1207716 B1 EP1207716 B1 EP 1207716B1
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EP
European Patent Office
Prior art keywords
ring
outside
moulding according
jacket
bridge
Prior art date
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Expired - Lifetime
Application number
EP01125046A
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German (de)
French (fr)
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EP1207716A2 (en
EP1207716A3 (en
Inventor
Rolf Janke
Michael Hein
Wilfried Werner
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ELAC Electroacustic GmbH
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ELAC Electroacustic GmbH
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Application filed by ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
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    • 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
    • H04R9/066—Loudspeakers using the principle of inertia
    • 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
    • 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
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Definitions

  • the invention relates to a molding according to the preamble of the main claim for holding an exciter, consisting of a sound-emitting membrane and an exciter, which has a coil and at least one magnetic system, as it is known from WO 98 34320 A2 is known.
  • an exciter consisting of a sound-emitting membrane and an exciter, which has a coil and at least one magnetic system, as it is known from WO 98 34320 A2 is known.
  • a current-carrying conductor In electro-dynamic speakers, the deflection of a current-carrying conductor is used in a magnetic field to move a sound-emitting membrane.
  • a permanent magnet In this case, a permanent magnet is provided with an annular air gap in which a coil oscillates.
  • the coil is now firmly attached to the sound-emitting surface, e.g. glued over a molding, and the mass of the now moving relative to the coil magnet system used to set the sound-emitting surface in vibration.
  • an air gap is currently chosen so large that no mechanical contact is possible.
  • the invention has therefore set itself the task of avoiding the wobble by a vibration of the transmission to the magnetic coil unit damping as possible suspension is created.
  • a first region of the molded part which serves as an adhesive flange for connection to the sound surface, for example a flat loudspeaker panel, with an outer ring provided for locking one or more magnet systems.
  • This outer ring is coupled in the selected embodiment arranged in two planes, not straight, but curved, thin bridge bridges coupled by their distributed over the radius arrangement between the rings and on the other their spacing in more than a distance from the sound surface provide for a cylindrical guidance of the magnet system, so that wobble vibrations are not transmitted to the voice coils.
  • the assembly of the molding and the magnet system can be further simplified in that slots for receiving solder lugs or solder pins on the Receiving ring for receiving the magnet system can be provided.
  • molding consists essentially of two rings 10, 16, the inner ring 10, which has an adhesive flange for connection to the sound-emitting membrane at the in the figure rearwardly facing inwardly projecting annular surface 12, and which is provided for receiving the voice coil, and the outer ring 16, which consists essentially only of a short cylinder jacket surface, and is provided with lugs 18, 20 on its inner side, which carry the magnet system.
  • the webs 22 each extend in a plane parallel to the oscillating surface, so that the magnet system can use its flexibility perpendicular to this plane to its own movement and the excitation of the oscillating surface. You can, as in the figure, all in the same direction (clockwise outward in the figure) or in such a way that the webs of a group are aligned in opposite directions to those of the other group.
  • vents 14 In its inner circumference to the - front in the figure, facing away from the sound membrane - side of the inner ring also has ventilation openings 14 which open to lying laterally adjacent to the adhesive flange areas of the sound surface. These vents 14 cool the coil, which is otherwise surrounded by the magnet system.
  • each bridges bridge 22 is each two parallel spaced in two planes from the sound surface.
  • the bridge bridges 22 are distributed in two groups each of turn three groups of two over the circumference, and the two groups are arranged at two different distances from the sound-emitting membrane, the provision of any number of distances is conceivable, and limited only by the manufacturing process.
  • the molded part can also be produced in 3D lithography, or laser-cut from a glass fiber-reinforced plastic.
  • a single bridging web 22 has a curved shape of at least two oppositely directed bends out of the straight extension, stiffer materials can also be used if longer webs are provided.
  • the connection of a web 22 with the inner ring 10 and / or the outer ring 16 should be at an angle of less than 45 ° to the radius, ie initially approximately at right angles with respect to the web width enlarged cross-section to the vibration forces, which later also during operation Exciters arise to resist especially good.
  • a damping disk 26 is highlighted hatched within the inner ring, which centers the necessary for damping the vibration surface portion located within the adhesive surface 12 mass as in the drawing but possibly also azentrisch at the desired location.
  • This mass 26 can be glued, but can also be held only by the holding them webs in place. Additional felt material can be placed between them and the oscillating surface, or additional weights can be used on the back in special fits - not shown - fits.
  • the assembly of the molded part and the magnet system can be further simplified in that slots 24 are provided for receiving solder lugs or solder pins on the outer ring 16 for receiving such prefabricated with the magnetic system elements.
  • further eyelets for holding, for example, spiral spring elements can be provided, which additionally hold the magnet system against the membrane, and which also have a positive influence on the mechanical stress on the bridge webs 22.

Abstract

The device has an inner ring (10) for holding a coil and for sticking to the sound emitting membrane and an outer ring (16) joined to the inner ring via a number of bridge parts (22) to attach one or more magnet systems. The bridge parts contain a number of bridges in at least two groups and distributed over the circumference. The groups are arranged in different planes at different distances from the sound emitting membranes.

Description

Die Erfindung betrifft ein Formteil nach dem Oberbegriff des Hauptanspruches zur Halterung eines Exciters, bestehend aus einer schallabgebenden Membran und einem Exciter, der eine Spule und wenigstens ein Magnetsystem aufweist, wie es aus der WO 98 34320 A2 bekannt ist. Obwohl die Verwendung doppelreihiger Brilckenstege bereits in dieser Schrift genannt wird und ein Formteil offenbart wird, werden unerwünschte Schwingungen nicht hinreichend gedämpft.The invention relates to a molding according to the preamble of the main claim for holding an exciter, consisting of a sound-emitting membrane and an exciter, which has a coil and at least one magnetic system, as it is known from WO 98 34320 A2 is known. Although the use of double row Brilckenstege is already mentioned in this document and a molding is disclosed, unwanted vibrations are not sufficiently attenuated.

Weiter ist ein Formteil aus der DE 28 10 930 A bekannt. Es weist jedoch in akustischer Hinsicht unzulängliche Sicherheit gegenüber nicht beabsichtigten Schwingungen auf.Next is a molding from the DE 28 10 930 A known. However, it has acoustically insufficient safety against unintended vibrations.

Aus der WO 00 52961 A ist weiter ein Dämpfer für einen elektro-dynamischen Lautsprecher bekannt. Und aus der US 6,095,280 A ist schließlich ein konzentrisches Haltesystem mit Röhren zur Halterung eines Lautsprechers bekannt. Diese Vorrichtungen versuchen jedoch, mit prohibitiv hohem apparativem Aufwand unerwünschte Schwingungen zu vermeiden.From the WO 00 52961 A Furthermore, a damper for an electro-dynamic speaker is known. And from the US 6,095,280 A Finally, a concentric support system with tubes for holding a speaker is known. However, these devices try to avoid unwanted vibrations with prohibitively high expenditure on equipment.

Bei elektro-dynamischen Lautsprechern wird die Ablenkung eines stromdurchflossenen Leiters in einem Magnetfeld zur Bewegung einer schallabgebenden Membran genutzt. Dabei wird ein Dauermagnet mit einem ringförmigen Luftspalt versehen, in dem eine Spule schwingt.In electro-dynamic speakers, the deflection of a current-carrying conductor is used in a magnetic field to move a sound-emitting membrane. In this case, a permanent magnet is provided with an annular air gap in which a coil oscillates.

Bei Excitern für Flachlautsprecher wird die Spule nun an die schallabgebende Fläche fest angesetzt, z.B. über ein Formteil verklebt, und die Masse des sich nun relativ zur Spule bewegenden Magnetsystems dazu genutzt, die schallabgebende Fläche in Schwingungen zu versetzen.In exciters for flat speakers, the coil is now firmly attached to the sound-emitting surface, e.g. glued over a molding, and the mass of the now moving relative to the coil magnet system used to set the sound-emitting surface in vibration.

Dabei ergibt sich nun das Problem, daß die Fläche meist fest in Einrichtungen montiert ist, die Schwingungen aus anderen Ursachen ausgesetzt sein können, z.B. bei mobilen Beschallungsanlagen. Die Einheit aus Spule und Magnet kann dabei in Taumelschwingungen geraten, bei denen die Spule an das Magnetsystem anstößt und mechanisch abnutzt. Neben einer nicht mehr korrekt gewährleisteten Übertragung des Schalls hat dies drastische Auswirkungen auf die Lebensdauer und ist daher höchst unerwünscht.The problem now arises that the surface is usually fixedly mounted in devices which may be subject to vibrations from other causes, e.g. in mobile sound systems. The unit of coil and magnet can get into tumbling oscillations, in which the coil abuts the magnet system and mechanically wears. In addition to a no longer guaranteed transmission of the sound has drastic effects on the lifetime and is therefore highly undesirable.

Daher wird zur Zeit ein Luftspalt so groß gewählt, daß keine mechanischen Berührungen möglich sind. Andererseits ist es aus Gründen der Homogenität des Magnetfeldes und der Dimensionierung des Magnetsystems erwünscht, diesen möglichst klein zu machen.Therefore, an air gap is currently chosen so large that no mechanical contact is possible. On the other hand, it is desirable for reasons of homogeneity of the magnetic field and the dimensioning of the magnet system to make it as small as possible.

Die Erfindung hat sich daher zur Aufgabe gestellt, die Taumelschwingungen zu vermeiden, indem eine die Übertragung von Schwingungen auf die Magnetspuleeinheit möglichst dämpfende Aufhängung geschaffen wird.The invention has therefore set itself the task of avoiding the wobble by a vibration of the transmission to the magnetic coil unit damping as possible suspension is created.

Erfindungsgemäß wird die Aufgabe durch ein Formteil mit den Merkmalen des Hauptanspruches gelöst. Die Unteransprüche geben vorteilhafte Ausführungsformen wieder.According to the invention the object is achieved by a molding with the features of the main claim. The dependent claims give advantageous embodiments again.

Vorteilhaft ist dabei die Entkopplung eines ersten Bereichs des Formteils, der als Klebeflansch zur Verbindung mit der Schallfläche, beispielsweise einem Flachlautsprecherpaneel dient, mit einem zur Arretierung eines oder mehrerer Magnetsysteme vorgesehenen äußeren Ring.In this case, it is advantageous to decouple a first region of the molded part, which serves as an adhesive flange for connection to the sound surface, for example a flat loudspeaker panel, with an outer ring provided for locking one or more magnet systems.

Dieser äußere Ring ist in der gewählten Ausführungsform durch in zwei Ebenen angeordnete, nicht gerade, sondern geschwungen ausgebildete, dünne Brückenstege angekoppelt, die durch ihre zum einen über den Radius verteilte Anordnung zwischen den Ringen und zum anderen ihre Beabstandung in mehr als einem Abstand zur Schallfläche für eine zylindrische Führung des Magnetsystems sorgen, so daß Taumelschwingungen nicht auf die Schwingspulen übertragen werden.This outer ring is coupled in the selected embodiment arranged in two planes, not straight, but curved, thin bridge bridges coupled by their distributed over the radius arrangement between the rings and on the other their spacing in more than a distance from the sound surface provide for a cylindrical guidance of the magnet system, so that wobble vibrations are not transmitted to the voice coils.

Durch ein zusätzliches Dämpfungselement, das innerhalb des Innenrings, wiederum über dünne Stege mit diesem verbunden vorgesehen werden kann, wird die selektive Dämpfungen von Resonanzspitzen der schallabgebenden Biegemembran bewirkt, so daß ohne weiteren Montageaufwand eine Dämpfung gegen den sogenannten "Drumskin-Effekt" bewirkt werden kann. Ansonsten kann es bei Resonanz zu einem unerwünschten, weil höherfrequenten Schwingen der sich innerhalb des verklebten Innenrings befindlichen Membranfläche kommen.By an additional damping element which can be provided within the inner ring, in turn connected via thin webs with this, the selective damping of resonance peaks of the sound-emitting bending membrane is effected, so that without further installation effort, a damping against the so-called "drumskin effect" can be effected , Otherwise, there may be an undesirable, because of higher-frequency oscillation of the membrane surface located within the glued inner ring in resonance.

Schließlich kann die Montage des Formteils und des Magnetsystems noch dadurch vereinfacht werden, daß Einschübe zur Aufnahme von Lötösen oder Lötstiften an dem Aufnahmering für die Aufnahme des Magnetsystems vorgesehen werden.Finally, the assembly of the molding and the magnet system can be further simplified in that slots for receiving solder lugs or solder pins on the Receiving ring for receiving the magnet system can be provided.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus nachfolgender Beschreibung eines bevorzugten Ausführungsbeispiels anhand der beigefügten Zeichnung. Dabei zeigt:

Fig. 1
eine perspektivische Darstellung des Formteils.
Further advantages and features of the invention will become apparent from the following description of a preferred embodiment with reference to the accompanying drawings. Showing:
Fig. 1
a perspective view of the molding.

Das in der Fig. 1 dargestellte Formteil besteht im wesentlichen aus zwei Ringen 10, 16, dem Innenring 10, der an der in der Figur nach hinten weisenden nach innen einkragenden Ringfläche 12 einen Klebeflansch zur Verbindung mit der schallabgebenden Membran aufweist, und der zur Aufnahme der Schwingspule vorgesehen ist, und dem Außenring 16, der im wesentlichen nur aus einer kurzen Zylindermantelfläche besteht, und mit Ansätzen 18, 20 an seiner Innenseite versehen ist, die das Magnetsystem tragen.That in the Fig. 1 shown molding consists essentially of two rings 10, 16, the inner ring 10, which has an adhesive flange for connection to the sound-emitting membrane at the in the figure rearwardly facing inwardly projecting annular surface 12, and which is provided for receiving the voice coil, and the outer ring 16, which consists essentially only of a short cylinder jacket surface, and is provided with lugs 18, 20 on its inner side, which carry the magnet system.

Diese beiden Ringe 10, 16 sind über Brückenstege 22 verbunden, die in dieser Darstellung in drei Zweiergruppen pro Ebene sich aus einer breiten Wurzel am dem Innenmantel des Außenrings 16 heraus geschwungen zum Außenumfang des Innenrings 10 hin über eine längere Strecke erstrecken, die mit den Ringen 10, 16 im wesentlichen parallel ist.These two rings 10, 16 are connected by bridge webs 22, which in this representation in three groups of two per plane extending from a broad root on the inner shell of the outer ring 16 swing out to the outer periphery of the inner ring 10 out over a longer distance extending with the rings 10, 16 is substantially parallel.

Während sechs Stege 22 etwa in der Mitte (in Längserstreckung) des Außenrings 16 entspringen und an der hinteren Außenkante des Innenrings 10 enden, sind weitere sechs Stege versetzt dazu von der vorderen Innenkante des Außenrings 16 zur vorderen Außenkante des Innenrings geführt. Alle zwölf sind, wie ein schraffierter Steg im unteren Bereich der Figur deutlich werden läßt, "S"-förmig geschwungen, um eine rechtwinklige Krafteinleitung in die Ringe zu erhalten, während die annähernd parallel zu den Ringen verlaufenden Bereiche die gute Flexibilität jedes einzelnen Stegs rechtwinklig zur Schwingfläche gewährleisten.While six webs 22 spring approximately in the middle (in the longitudinal extent) of the outer ring 16 and terminate at the rear outer edge of the inner ring 10, a further six webs are offset from the front inner edge of the outer ring 16 to the outer front edge of the inner ring. All twelve are, as a hatched ridge in the lower part of the figure can be seen, "S" -shaped to obtain a rectangular force into the rings, while the approximately parallel to the rings areas perpendicular to the good flexibility of each ridge to ensure the oscillating surface.

Die Stege 22 verlaufen jeweils in einer Ebene parallel zur Schwingfläche, damit das Magnetsystem ihre Flexibilität rechtwinklig zu dieser Ebene zu seiner eigenen Bewegung und der Anregung der Schwingfläche nutzen kann. Sie können, wie in der Figur alle in dieselben Drehrichtung (in der Figur im Uhrzeigersinn nach außen) oder auch derart, daß die Stege einer Gruppe gegenläufig zu denen der anderen Gruppe ausgerichtet sind.The webs 22 each extend in a plane parallel to the oscillating surface, so that the magnet system can use its flexibility perpendicular to this plane to its own movement and the excitation of the oscillating surface. You can, as in the figure, all in the same direction (clockwise outward in the figure) or in such a way that the webs of a group are aligned in opposite directions to those of the other group.

In seinem Innenumfang zu der - in der Abbildung vorderen, von der Schallmembran weg weisenden - Seite besitzt der Innenring zudem Belüftungsöffnungen 14, die zu seitlich neben dem Klebeflansch liegenden Bereichen der Schallfläche öffnen. Diese Belüftungsöffnungen 14 kühlen die Spule, die ja ansonsten vom Magnetsystem umgeben ist.In its inner circumference to the - front in the figure, facing away from the sound membrane - side of the inner ring also has ventilation openings 14 which open to lying laterally adjacent to the adhesive flange areas of the sound surface. These vents 14 cool the coil, which is otherwise surrounded by the magnet system.

An dem Außenring 16 sind nun drei Hakenzungen 18 zum einschnappenden Eingriff in die an ihm zu befestigenden Magnetsysteme vorgesehen, die von dem Schwingfläche weg weisend, nach innen hakenartige Kanten zur Arretierung eines oder mehrerer Magnetsysteme bieten. Diesen benachbart sind je zwei ebenfalls rechtwinklig zur Ringebene von der Membran wegweisende Zentrierpassungen 20 in Form eines "L" angeordnet, in die das Magnetsystem aufgenommen werden kann, und die dessen Position in Gegenrichtung zu den Hakenzungen 18 definieren. Das lange Ende des "L" ist dabei parallel zu den Hakenzungen mit einem kleinen Abstand zu diesen ausgerichtet und ragt ein wenig über die in der Zeichnung vordere von der Schwingfläche wegweisenden Kante des des Außenrings heraus. Die kurzen Enden des "L" weisen zum Innenring und halten das Magnetsystem hinter diesem.On the outer ring 16, three hook tongues 18 are now provided for snapping engagement with the magnetic systems to be fastened to it, which point away from the oscillating surface and provide inwardly hook-like edges for locking one or more magnet systems. Each of these two adjacent centering fits 20, which are also pointing away from the membrane at right angles to the ring plane, are arranged in the form of an "L" into which the magnet system can be received and which define its position in the opposite direction to the hook tongues 18. The long end of the "L" is parallel to the Hakenzungen with a small distance aligned with this and protrudes a little beyond the front in the drawing of the swinging surface pioneering edge of the outer ring. The short ends of the "L" face the inner ring and hold the magnet system behind it.

Zwischen den drei Gruppen aus einer Hakenzunge 18 und den direkt benachbarten Zentierpassungen 20 befinden sich jeweils vier Brückenstege 22, je zwei einander parallele in zwei Ebenen von der Schallfläche beabstandet.Between the three groups of a hook tongue 18 and the directly adjacent Zentierpassungen 20 are each four bridges bridges 22, each two parallel spaced in two planes from the sound surface.

Während in den Zeichnungen die Brückenstege 22 in zwei Gruppen jeweils wiederum dreier Zweiergruppen über den Umfang verteilt sind, und die beiden Gruppen in zwei unterschiedlichen Abständen zur schallabgebenden Membran angeordnet sind, ist die Vorsehung von beliebig vielen Abständen denkbar, und nur durch das Herstellungsverfahren begrenzt.While in the drawings, the bridge bridges 22 are distributed in two groups each of turn three groups of two over the circumference, and the two groups are arranged at two different distances from the sound-emitting membrane, the provision of any number of distances is conceivable, and limited only by the manufacturing process.

Um die Kosten für Spritzguß zu ersparen, kann das Formteil auch in 3D-Lithographie hergestellt werden, oder aus einem Glasfaser-verstärkten Kunststoff lasergefräst werden.In order to save the cost of injection molding, the molded part can also be produced in 3D lithography, or laser-cut from a glass fiber-reinforced plastic.

Da ein einzelner Brückensteg 22 eine geschwungene Form von wenigstens zwei gegeneinander gerichteten Biegungen aus der geraden Erstreckung heraus aufweist, können auch steifere Materialien eingesetzt werden, wenn längere Stege vorgesehen werden. Dabei sollte die Verbindung eines Stegs 22 mit dem Innenring 10 und/oder dem Außenring 16 mit einem Winkel von weniger als 45° zum Radius erfolgen, also zunächst annähernd rechtwinklig mit bevorzugt gegenüber der Stegbreite vergrößertem Querschnitt, um den Schwingkräften, die später auch beim Betrieb des Exciters entstehen, besonders gut zu widerstehen.Since a single bridging web 22 has a curved shape of at least two oppositely directed bends out of the straight extension, stiffer materials can also be used if longer webs are provided. In this case, the connection of a web 22 with the inner ring 10 and / or the outer ring 16 should be at an angle of less than 45 ° to the radius, ie initially approximately at right angles with respect to the web width enlarged cross-section to the vibration forces, which later also during operation Exciters arise to resist especially good.

Schließlich ist noch innerhalb des Innenrings eine Dämpfungsscheibe 26 schraffiert hervorgehoben, die die zur Dämpfung des innerhalb der Klebfläche 12 befindlichen Schwingflächenabschnitts notwendige Masse zentriert wie in der Zeichnung ggf. aber auch azentrisch am gewünschten Ort anordnet. Diese Masse 26 kann verklebt werden, kann aber auch lediglich durch die sie haltenden Stege am Ort gehalten werden. Zusätzliches Filzmaterial kann zwischen sie und die Schwingfläche gelegt werden, oder es können für besondere Schwingflächen noch zusätzliche Gewichte an der Rückseite in - nicht dargestellte - Passungen eingesetzt werden.Finally, a damping disk 26 is highlighted hatched within the inner ring, which centers the necessary for damping the vibration surface portion located within the adhesive surface 12 mass as in the drawing but possibly also azentrisch at the desired location. This mass 26 can be glued, but can also be held only by the holding them webs in place. Additional felt material can be placed between them and the oscillating surface, or additional weights can be used on the back in special fits - not shown - fits.

Ferner kann die Montage des Formteils und des Magnetsystems noch dadurch vereinfacht werden, daß Einschübe 24 zur Aufnahme von Lötösen oder Lötstiften an dem Außenring 16 für die Aufnahme solcher mit dem Magnetsystem vorgefertigter Elemente vorgesehen sind.Furthermore, the assembly of the molded part and the magnet system can be further simplified in that slots 24 are provided for receiving solder lugs or solder pins on the outer ring 16 for receiving such prefabricated with the magnetic system elements.

Schließlich können in einer weiter bevorzugten Ausführungsform noch weitere Ösen zur Halterung beispielsweise von Spiralfederelementen vorgesehen werden, die das Magnetsystem zusätzlich an der Membran halten, und die zudem bei besonderer Belastung die mechanische Beanspruchung der Brückenstege 22 positiv beeinflussen.Finally, in a further preferred embodiment, further eyelets for holding, for example, spiral spring elements can be provided, which additionally hold the magnet system against the membrane, and which also have a positive influence on the mechanical stress on the bridge webs 22.

Claims (8)

  1. A moulding for holding an exciter for a flat-membrane speaker with an inside ring (10) receiving a coil and having an adhesive flange for connecting to the sound-emitting membrane, and an outside ring (16), connected to the inside ring (10) by means of a plurality of curved bridge webs (22), for fastening one or more magnet systems,
    at least two groups of bridge webs (22) being provided distributed across the circumference, the at least two groups being arranged in at least two planes arranged at differing distances to the adhesive flange,
    characterized in that
    the bridge webs (22) are guided from the inside jacket of the outside ring (16) to the outside jacket of the inside ring (10) and are designed in a wavy manner with two oppositely directed flexures curved from a straight extension, the outside jacket of the inside ring (10) being arranged opposite the inside jacket of the outside ring (16).
  2. The moulding according to Claim 1, characterized in that the inside ring (10) is provided with a multiplicity of venting opening (14) that open towards areas lying to the side of the adhesive flange and the bridge webs (22) being attached to the outside of the outside jacket.
  3. The moulding according to one of the preceding claims, characterized in that the bridge webs (22) each run in a plane parallel to the adhesive flange.
  4. The moulding according to one of the preceding claims, characterized in that the connection of a bridge web (22) with the inside ring (10) and/or the outside ring (16) takes place at an angle of less than 45 ° to the radius.
  5. The moulding according to one of the preceding claims, characterized in that the outside ring (16) exhibits, at right angles to the ring plane, hooked tongues (18) for snap-in engagement into the magnet systems to be attached to it.
  6. The moulding according to Claim 5, characterized in that two "L" shaped centring fits (20) are arranged on the outside ring next to each hooked tongue (18).
  7. The moulding according to Claim 5 or 6, characterized in that the hooked tongues (18) and/or centring fits (20) project out of the inside jacket surface of the outside ring (16) towards the inside.
  8. The moulding according to one of the preceding claims, characterized in that the outside ring (16) exhibits slide-in units (24) for sliding in soldering eyes and/or soldering pins.
EP01125046A 2000-10-26 2001-10-20 Molded part for holding the driver of a flat diaphragm loudspeaker Expired - Lifetime EP1207716B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10053252A DE10053252C2 (en) 2000-10-26 2000-10-26 Molding for holding an exciter for a flat diaphragm loudspeaker
DE10053252 2000-10-26

Publications (3)

Publication Number Publication Date
EP1207716A2 EP1207716A2 (en) 2002-05-22
EP1207716A3 EP1207716A3 (en) 2006-10-18
EP1207716B1 true EP1207716B1 (en) 2011-07-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01125046A Expired - Lifetime EP1207716B1 (en) 2000-10-26 2001-10-20 Molded part for holding the driver of a flat diaphragm loudspeaker

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EP (1) EP1207716B1 (en)
AT (1) ATE515894T1 (en)
DE (1) DE10053252C2 (en)
ES (1) ES2369197T3 (en)

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Publication number Priority date Publication date Assignee Title
DE102004001215B3 (en) * 2004-01-06 2005-04-21 Elac Electroacustic Gmbh Removable frame for exciter of flat membrane loudspeaker has inner ring holding membrane and fitting in outer ring with set of spring clips
DE102006031433B4 (en) * 2006-07-05 2011-06-22 ELAC Electroacustic GmbH, 24113 Exciter for area diaphragm loudspeakers
RU2456764C2 (en) * 2008-01-04 2012-07-20 Эйрбас Оперэйшнз Гмбх Oscillator for flat loudspeaker, flat loudspeaker and transport vehicle equipped with such loudspeaker
CN101911726B (en) 2008-01-04 2014-04-02 空中客车作业有限公司 Oscillator for a flat loudspeaker, flat loudspeaker and vehicle
DE202010006188U1 (en) * 2010-04-28 2011-03-03 Elac Electroacustic Gmbh Speaker with actuator and sealing membrane
US11622199B2 (en) * 2020-11-09 2023-04-04 Glass Acoustic Innovations Technology Co., Ltd. Flat diaphragm speaker

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Publication number Priority date Publication date Assignee Title
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter

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US4235302A (en) * 1977-03-15 1980-11-25 Kenkichi Tsukamoto Loudspeaker
US5734132A (en) 1996-07-19 1998-03-31 Proni; Lucio Concentric tube suspension system for loudspeakers
WO2000052961A1 (en) * 1999-03-03 2000-09-08 Tokin Corporation Vibration actuator having magnetic circuit elastically supported by a spiral damper with increased compliance

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter

Also Published As

Publication number Publication date
DE10053252A1 (en) 2002-03-14
ES2369197T3 (en) 2011-11-28
ATE515894T1 (en) 2011-07-15
EP1207716A2 (en) 2002-05-22
EP1207716A3 (en) 2006-10-18
DE10053252C2 (en) 2002-10-10

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