EP2213106B1 - Flat diaphragm loudspeaker - Google Patents
Flat diaphragm loudspeaker Download PDFInfo
- Publication number
- EP2213106B1 EP2213106B1 EP09752105A EP09752105A EP2213106B1 EP 2213106 B1 EP2213106 B1 EP 2213106B1 EP 09752105 A EP09752105 A EP 09752105A EP 09752105 A EP09752105 A EP 09752105A EP 2213106 B1 EP2213106 B1 EP 2213106B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- magnet
- loudspeaker
- loudspeaker system
- suspension
- 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.)
- Not-in-force
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Images
Classifications
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- 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
-
- 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
- H04R9/025—Magnetic circuit
-
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
-
- 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
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Definitions
- the invention relates to a loudspeaker system in which the membrane of the loudspeaker has a defined material thickness, in particular in its edge region, and has an asymmetrical suspension about the mechanical rest position of this membrane in the form of one, preferably two mirrored, identical components and at least 50% of the rearward sound radiation. is realized by the interior of a magnet system;
- the invention further relates to the use of the speaker system as speakers or in radios, televisions, radio receivers, walkie talkies, test receivers, mobile phones and headphones or the like.
- a speaker is in the narrower sense a device by which low-frequency electrical signals are converted into sound.
- speakers are sometimes subsumed under the term sound transducer or speaker.
- Sound generally refers to sounds, sounds, sounds or other types of sounds that can be audibly perceived by humans or animals. Since loudspeakers are used in all areas of life, such as in the cinema, in televisions, but especially in headphones or hand-held radios, loudspeakers exist in various sizes and designs and, above all, in very different qualities. For the size of the speakers, in particular for the size of the loudspeaker diaphragm, the higher the sound to be generated, the smaller the dimensions, which are associated with numerous other problems.
- Speakers are also referred to in the art as chassis or drivers, although these terms refer to only certain device elements of a speaker system, such as the so-called basket or membrane drive.
- the predominant design of the loudspeakers is the electrodynamic loudspeaker with central drive.
- the membrane is driven by the interaction between electric current and a DC magnetic field.
- a current-carrying coil is located in the magnetic DC field of the magnet.
- the known electrodynamic loudspeaker has a central voice coil, but forms with decentralized drives have also been described.
- the sound emitted by the dust cap in the direction of the pole core does not spread optimally through the narrow pole core bore or the ventilation holes in the diaphragms and voice coil bobbins.
- FIG JP 60 09 1798 A Another embodiment of conventional prior art loudspeaker chassis are coaxial loudspeakers as in FIG JP 60 09 1798 A described, which additionally have a tweeter, which is placed in the region of the low-midrange diaphragm.
- the object of the invention was therefore to provide a loudspeaker system which does not have the disadvantages of the prior art and in particular has good performance parameters.
- an electrodynamic loudspeaker chassis which has either a one-piece symmetrical (FIG. 2 (5)) or a mirror-symmetrical design of at least two parts constructed, flexible membrane suspension (see FIGS. 1 (4), 2 (4)).
- a suspension that is axisymmetric about the mechanical rest position is provided in the form of one or two mirrored, identical components (see FIG. 2 ).
- the compliant suspension is advantageous if it is perfectly symmetrical.
- the term of perfectly symmetrical suspension is known to one of ordinary skill in speaker technology or acoustics; He knows what is to be understood in the field of his art as a perfectly symmetrical suspension.
- the membrane which is fixed by the described symmetrical suspension, at the outer diameter of the membrane (outer diameter) has at least such a thickness as in the region of the center of the membrane, wherein the membrane thickness or the Membrane thickness in the edge area, d. H. in the outer diameter of the membrane, more than 10% of the membrane diameter is.
- the membrane thickness is more than 1 cm at the outer diameter of the membrane.
- the membrane thickness in the region of the center of the membrane could have half a centimeter.
- the larger edge thickness of the membrane than the prior art which thus means a departure from the conventional, allows a symmetrical suspension of these in the form of one or two mirrored, substantially identical components.
- the combination of the technical features of the suspension according to the invention with those of the membrane thickness on the outer diameter of the membrane leads to a particularly improved loudspeaker.
- a membrane which is very thick at least in the edge region advantageously enables a suspension with a particularly low jamming, in particular a symmetrical suspension (see also FIG FIGS. 1 and 2 ).
- a voice coil according to the invention represents the drive unit for the speaker. It consists of a thin wire which is wound on a voice coil former. The voice coil dips into the air gap of the permanent magnet or electromagnet, in which there is a magnetic field. The bobbin is connected to the membrane unit of the speaker. The magnetic alternating field, which builds up due to current flow, moves the voice coil with the diaphragm forwards and backwards and thus makes it possible to transduce the voltage vibrations and air vibrations.
- the very large voice coil in relation to the diaphragm diameter allows a reduction of the dynamic compression by voice coil heating.
- a very large, circular voice coil preferably means one which reaches into the region of the edge of the membrane, for example in that the voice coil diameter is at least 75% of the membrane diameter.
- the diameter of the membrane and voice coil is the same size in a preferred embodiment; However, it may be provided in other preferred variants of the invention that the diameter of the voice coil is greater than that of the membrane.
- the tweeter inside the magnet system radiates the sound through an opening in the membrane of the woofer.
- a tweeter which is arranged centrally in the woofer membrane, is located within the magnet system.
- the tweeter may be, for example, a product, as in the DE 20 2004 015 635 111 is described.
- the loudspeaker system according to the invention additionally comprises a tweeter
- this combined loudspeaker system has an outer and an inner suspension (FIG. 2 (4, 5, 17)).
- the terms of the inner or outer suspension are self-explanatory to those skilled in the art.
- a tweeter is placed in a woofer membrane, there is on the one hand an outer edge of the woofer membrane and on the other hand also an outer edge of the tweeter membrane, the latter being at least partially surrounded by the woofer membrane.
- the outer suspension would serve to center or position the diaphragm for the mid and low frequencies.
- At least one region at the outer edge of the membrane, on which the outer suspension (bead) is arranged formed by an elastic, open-pore or closed-cell foam, which is preferably permanently elastic.
- an elastic, open-pore or closed-cell foam which is preferably permanently elastic.
- the membrane for the low and mid-tone regions is positioned or centered with a fabric such as acrylic, nomex and / or cotton fabric in combination with phenolic and / or epoxy resin or by a rubber construction in the form of a suspension ,
- the magnet system comprises at least one magnet preferably from the group comprising a samarium cobalt magnet, a cerium-cobalt magnet, an aluminum-nickel-cobalt magnet, a ferrite magnet and / or preferably a neodymium magnet.
- the loudspeaker system according to the invention preferably has a membrane, which is designed in particular as a sandwich membrane, which can be formed stiff by the combination of core material and cover layers.
- the core material preferably has a honeycomb structure and can be formed, for example, from aramid fibers, paper, polyester, polypropylene or aluminum.
- the cover layers of the membrane may be fiber materials, metal foils and / or. Include plastic films.
- the fiber materials may be, for example, paper or cotton.
- the fabric When using fabrics of carbon, glass or aramid fibers, the fabric must have a matrix-like structure on at least one side, which can be produced, for example, from thermoplastics or thermosets.
- Fibers are embedded in the matrix, i. H.
- the fibers are spatially fixed, which allows a load input and output.
- the matrix supports the fibers. The load is transferred by the adhesion between fiber, matrix and core.
- the fibers may be, for example, aramid, carbon, polyester, nylon, polyethylene, ceramic, glass, drilling, flax, hemp and / or other fibers.
- An example of the mechanical rest position perfectly symmetrical suspension in the form of two mirrored identical suspensions allows the construction of an advantageous speaker system.
- a voice coil of similar size to the diaphragm diameter and voice coil carrier (6, 7) for reducing the dynamic compression caused by voice coil heating additionally improves the exemplary loudspeaker system.
- the external magnet system (10, 11, 12) consists of individual magnet segments or a closed ring to ensure a main sound radiation through the center of the magnet construction with very low air compression.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
Die Erfindung betrifft ein Lautsprechersystem, in welchem die Membran des Lautsprechers insbesondere in ihrem Randbereich eine definierte Materialdicke aufweist und eine um die mechanische Ruhelage dieser Membran achssymmetrische Aufhängung in Form von einer, bevorzugt zwei gespiegelten, identischen Komponenten besitzt und die rückwärtige Schallabstrahlung zu mindestens 50% durch den Innenraum eines Magnetsystems realisiert wird; die Erfindung betrifft weiterhin die Verwendung des Lautsprechersystems als Lautsprecherboxen oder aber bei Radios, Fernsehern, Rundfunkempfängern, Handsprechfunkgeräten, Messempfängern, Mobiltelefonen sowie Kopfhörern oder ähnlichem.The invention relates to a loudspeaker system in which the membrane of the loudspeaker has a defined material thickness, in particular in its edge region, and has an asymmetrical suspension about the mechanical rest position of this membrane in the form of one, preferably two mirrored, identical components and at least 50% of the rearward sound radiation. is realized by the interior of a magnet system; The invention further relates to the use of the speaker system as speakers or in radios, televisions, radio receivers, walkie talkies, test receivers, mobile phones and headphones or the like.
Ein Lautsprecher ist im engeren Sinne eine Vorrichtung, durch welche niederfrequente elektrische Signale in Schall umgewandelt werden. Ganz allgemein werden Lautsprecher manchmal auch unter dem Begriff Schallwandler oder Speaker subsumiert. Schall bezeichnet im allgemeinen Geräusche, Klänge, Töne oder andere Schallarten, wie sie von Menschen oder auch von Tieren auditiv wahrgenommen werden können. Da Lautsprecher in allen Lebensbereichen wie beispielsweise im Kino, beim Fernseher, aber speziell auch in Kopfhörern oder Handsprechfunkgeräten eingesetzt werden, existieren Lautsprecher in verschiedenen Größen und Ausführungen und vor allem in sehr verschiedenen Qualitäten. Für die Größe der Lautsprecher, insbesondere für die Größe der Lautsprechermembran, gilt: Je höher der zu erzeugende Ton, desto kleiner die Abmessungen, womit zahlreiche andere Probleme verbunden sind.A speaker is in the narrower sense a device by which low-frequency electrical signals are converted into sound. In general, speakers are sometimes subsumed under the term sound transducer or speaker. Sound generally refers to sounds, sounds, sounds or other types of sounds that can be audibly perceived by humans or animals. Since loudspeakers are used in all areas of life, such as in the cinema, in televisions, but especially in headphones or hand-held radios, loudspeakers exist in various sizes and designs and, above all, in very different qualities. For the size of the speakers, in particular for the size of the loudspeaker diaphragm, the higher the sound to be generated, the smaller the dimensions, which are associated with numerous other problems.
Lautsprecher werden im Stand der Technik auch als Chassis oder Treiber bezeichnet, obwohl diese Begriffe nur bestimmte Vorrichtungselemente eines Lautsprechersystems bezeichnen, beispielsweise den sogenannten Korb oder den Membranantrieb.Speakers are also referred to in the art as chassis or drivers, although these terms refer to only certain device elements of a speaker system, such as the so-called basket or membrane drive.
Das Grundprinzip zahlreicher im Stand der Technik bekannter Lautsprecher basiert auf einer Wandlung elektrischer Energie in Schallwellen durch das Zusammenspiel mindestens einer Membran, eine Aufhängung dieser, ein Magnetsystem und einer Schwingspule, wie es beispielsweise in
Diese Membranen erzeugen mithilfe einer mechanischen Schwingung die auditiv wahrnehmbaren Signale. In den meisten Fällen sollen diese Elemente als Kolbenstrahler wirken; die Membran soll also ganzflächig und gleichmäßig bewegt werden. Im Stand der Technik wird ausgeführt, dass dies im allgemeinen nur bei tiefen Frequenzen zu erreichen ist, deren Wellenlänge im Verhältnis zur Membrandurchmesser groß ist.These membranes generate the auditory signals by means of a mechanical vibration. In most cases, these elements should act as a piston emitter; The membrane should therefore be moved over the entire surface and evenly. It is stated in the prior art that this can generally only be achieved at low frequencies whose wavelength is large in relation to the membrane diameter.
Die überwiegende Bauform der Lautsprecher ist der elektrodynamische Lautsprecher mit zentralem Antrieb. Bei diesem wird die Membran durch die Wechselwirkung zwischen elektrischem Strom und einem magnetischen Gleichfeld angetrieben. Eine stromdurchflossene Spule befindet sich im magnetischen Gleichfeld des Magneten. Der bekannte elektrodynamische Lautsprecher hat eine zentrale Schwingspule, aber es sind auch Formen mit dezentralen Antrieben beschrieben worden.The predominant design of the loudspeakers is the electrodynamic loudspeaker with central drive. In this case, the membrane is driven by the interaction between electric current and a DC magnetic field. A current-carrying coil is located in the magnetic DC field of the magnet. The known electrodynamic loudspeaker has a central voice coil, but forms with decentralized drives have also been described.
Dynamische Lautsprecher oder dynamische Konuslautsprecher werden so konstruiert, dass eine dünne, trichterförmige Membran am äußeren Membranrand und indirekt über die mechanische Verbindung mit einem Schwingspulenträger elastisch aufgehängt wird. Aufgrund der unterschiedlichen Durchmesser, Materialien und Ausformungen der Aufhängungen entstehen unterschiedliche Nachgiebigkeiten, in Abhängigkeit von Bewegungsrichtung und Hub. Bei einigen Lautsprecherchassis findet man anstelle der trichterförmigen Membran auch kuppelförmige oder flache Membranen, die bezüglich der Einspannungen aber im Stand der Technik die gleichen Eigenschaften aufweisen. Bei all diesen Membranen wird angestrebt, die maximale Materialstärke im Bereich der Schwingspule zu erreichen und im Randbereich eine möglichst geringe Membrandicke.Dynamic loudspeakers or dynamic cone loudspeakers are designed so that a thin, funnel-shaped membrane is elastically suspended on the outer edge of the membrane and indirectly via the mechanical connection with a voice coil bobbin. Due to the different diameters, materials and shapes of the suspensions arise different compliances, depending on the direction of movement and stroke. In some loudspeaker chassis, instead of the funnel-shaped membrane, there are also dome-shaped or flat membranes which, however, have the same properties with respect to the restraints in the prior art. In all these membranes, the aim is to achieve the maximum material thickness in the region of the voice coil and in the edge region the smallest possible membrane thickness.
Ein weiteres charakteristisches Merkmal herkömmlicher Lautsprecherchassis ist die rückwärtige Schallabstrahlung der Lautsprechermembran, wobei der Schall typischerweise zu großen Teilen außen am Magnetsystem vorbeigeführt wird (veranschaulicht in den
Außerdem breitet sich der von der Staubschutzkappe Richtung Polkern abgestrahlte Schall durch die enge Polkernbohrung oder die Belüftungslöcher in den Membranen und Schwingspulenträgem nicht optimal aus.In addition, the sound emitted by the dust cap in the direction of the pole core does not spread optimally through the narrow pole core bore or the ventilation holes in the diaphragms and voice coil bobbins.
Dies hat nichtlineare mechanische Verluste und bei größerer Membranauslenkung Störgeräusche zur Folge. Bei kleinen Lautsprechern wiederum sind die Öffnungen in dem Korb sehr kurz, so dass der Einbau in eine Schallwand diese fast verschließt (siehe
Eine weitere Ausführungsform herkömmlicher Lautsprecherchassis nach Stand der Technik sind Koaxiallautsprecher wie in
Bei üblichen Lautsprechern sind außerdem die Schwingspulen im Verhältnis zum Membrandurchmesser relativ klein, was eine erhebliche temperaturbedingte Dynamikkompression zur Folge hat. Die im Stand der Technik beschriebenen Versuche durch innerhalb der Schwingspule liegende Magnete größere Schwingspulen zu ermöglichen haben wiederum schwierige Strömungsverhältnisse zur Folge und stellen daher bisher keine adäquate Lösung des Problems dar.In conventional loudspeakers, moreover, the voice coils are relatively small in relation to the diaphragm diameter, which results in a considerable temperature-related dynamic compression. The experiments described in the prior art to allow for larger voice coils located inside the voice coil magnets in turn have difficult flow conditions result and therefore do not represent an adequate solution to the problem.
Aufgabe der Erfindung war es daher, ein Lautsprechersystem bereitzustellen, welches die Nachteile des Standes der Technik nicht aufweist und das insbesondere gute Leistungsparameter aufweist.The object of the invention was therefore to provide a loudspeaker system which does not have the disadvantages of the prior art and in particular has good performance parameters.
Es war völlig überraschend, dass das erfindungsgemäße Problem mit einem Lautsprechersystem gelöst werden kann, welches mindestens eine Membran, eine Aufhängung dieser, ein Magnetsystem und eine Schwingspule umfasst, wobei die Aufhängung der Membran im Wesentlichen achssymmetrisch um die mechanische Ruhelage in Form von einer, bevorzugt zwei gespiegelten, identischen Komponenten erfolgt. Das Lautsprechersystem umfasst mindestens eine Membran, eine Aufhängung dieser, ein Magnetsystem und eine Schwingspule, wobei
- a) die Membran eine um die mechanische Ruhelage dieser Membran achssymmetrische Aufhängung besitzt und
- b) die Membran am äußeren Durchmesser eine Stärke von mehr als 10% des Membrandurchmessers aufweist und
- c) die rückwärtige Hauptabstrahlung mindestens zu 50% durch den Innenraum des Magnetsystems erfolgt.
- a) the membrane has a about the mechanical rest position of this membrane axisymmetric suspension and
- b) the membrane has a thickness of more than 10% of the membrane diameter at the outer diameter, and
- c) the rearward main radiation takes place at least 50% through the interior of the magnet system.
Es war völlig überraschend, dass durch die Kombination der einzelnen technischen Merkmale eine funktionelle Wechselwirkung dieser auftritt, die zu einem verbesserten Lautsprechersystem führt, welches die Nachteile des Standes der Technik nicht aufweist. Der Begriff "im Wesentlichen" ist im Sinne der Erfindung kein relativer und somit unklarer Begriff.It was completely surprising that the combination of the individual technical features a functional interaction of these occurs, which leads to an improved speaker system, which does not have the disadvantages of the prior art. The term "substantially" in the context of the invention is not a relative and thus unclear term.
Die mit der Erfindung erzielten Effekte wären nicht abrupt dann nicht realisierbar, wenn die Aufhängung der Membran nicht völlig symmetrisch erfolgt. Der Begriff der völlig symmetrischen Aufhängung stellt eine theoretisch mögliche, aber praktisch nicht realisierbare Aufhängung dar, da auch eine Aufhängung, die von der idealisierten theoretischen symmetrischen Aufhängung um ein sehr geringes Maß abweicht, ebenfalls zur Lösung der erfindungsgemäßen Aufgabe herangezogen werden kann. Daher wird durch den Begriff "im Wesentlichen" klargestellt, dass auch eine im Wesentlichen symmetrische Aufhängung, die dieselbe Funktion in demselben Weg und mit demselben Ergebnis hervorbringt, von der erfindungsgemäßen Lehre der symmetrischen Aufhängung mit erfasst ist.The effects achieved by the invention would not be abruptly then not feasible if the suspension of the membrane is not completely symmetrical. The concept of fully symmetrical suspension represents a theoretically possible, but practically unrealizable suspension, as well as a suspension that deviates from the idealized theoretical symmetrical suspension by a very small amount, can also be used to solve the problem of the invention. Therefore, the term "substantially" makes it clear that a substantially symmetrical suspension that performs the same function in the same way and with the same result is also covered by the symmetrical suspension teaching according to the invention.
Der Fachmann auf dem Gebiet der Akustik erkennt, was mit dem Begriff einer um die mechanische Ruhelage achssymmetrischen Aufhängung in Form von einer oder zwei gespiegelten, identischen Komponenten für eine Membran im Sinne der Erfindung gemeint ist und er weiß, inwieweit er von der theoretischen, völlig symmetrischen Form in der praktisch realisierten, im Wesentlichen symmetrischen Aufhängung abweichen darf, um die erfindungsgemäße Aufgabe zu lösen.The person skilled in the field of acoustics recognizes what is meant by the concept of a suspension that is axisymmetric about the mechanical rest position in the form of one or two mirrored, identical components for a diaphragm in the sense of the invention and knows to what extent it is completely theoretical Symmetrical shape may differ in the practically realized, substantially symmetrical suspension in order to achieve the object of the invention.
Bevorzugt wird also ein elektrodynamisches Lautsprecherchassis bereitgestellt, welches entweder eine einteilige symmetrische (Fig. 2(5)) oder eine spiegelbildlich aus mindestens zwei Teilen aufgebaute, nachgiebige Membranaufhängung aufweist (siehe
Die Funktionsweise des erfindungsgemäßen Lautsprechersystems kann überraschend verbessert werden, wenn die Membran, welche durch die beschriebene symmetrische Aufhängung fixiert wird, am äußeren Durchmesser der Membran (Außendurchmesser) mindestens eine solche Stärke wie im Bereich des Zentrums der Membran aufweist, wobei die Membranstärke bzw. die Membrandicke im Randbereich, d. h. im äußeren Durchmesser der Membran, mehr als 10% des Membrandurchmessers beträgt.The operation of the loudspeaker system according to the invention can be surprisingly improved if the membrane, which is fixed by the described symmetrical suspension, at the outer diameter of the membrane (outer diameter) has at least such a thickness as in the region of the center of the membrane, wherein the membrane thickness or the Membrane thickness in the edge area, d. H. in the outer diameter of the membrane, more than 10% of the membrane diameter is.
Das heißt, wenn der Membrandurchmesser beispielsweise einen Wert von 10 cm aufweist, beträgt die Membranstärke mehr als 1 cm am äußeren Durchmesser der Membran. In diesem Falle könnte beispielsweise die Membrandicke im Bereich des Zentrums der Membran einen halben Zentimeter aufweisen.That is, if the membrane diameter is, for example, 10 cm, the membrane thickness is more than 1 cm at the outer diameter of the membrane. In this case, for example, the membrane thickness in the region of the center of the membrane could have half a centimeter.
Auch ein Lautsprechersystem, welches als technisches Merkmal nur über eine Membran verfügt, die am äußeren Durchmesser eine Stärke von mehr als 10% des Membrandurchmessers aufweist, hat überraschenderweise vorteilhafte Eigenschaften bei der Wiedergabe von auditiv wahrnehmbaren Signalen.Even a loudspeaker system, which has as a technical feature only a membrane which has a thickness of more than 10% of the membrane diameter at the outer diameter, has surprisingly advantageous properties in the reproduction of auditory perceptible signals.
Es war völlig überraschend, dass die Schwingungseigenschaften der Membran durch diese Art der Ausgestaltung verbessert werden.It was completely surprising that the vibration characteristics of the membrane are improved by this type of design.
Vorteilhafterweise erlaubt die gegenüber dem Stand der Technik größere Randdicke der Membran, welche somit eine Abkehr vom technisch Üblichen bedeutet, eine symmetrische Aufhängung dieser in Form von einer oder zwei gespiegelten, im Wesentlichen identischen Komponenten. Die Kombination der technischen Merkmale der erfindungsgemäßen Aufhängung mit denen der Membrandicke am äußeren Durchmesser der Membran führt zu einem besonders verbesserten Lautsprecher. Eine zumindest im Randbereich sehr dicke Membran ermöglicht vorteilhafterweise eine besonders taumelarme Aufhängung, insbesondere eine symmetrische Aufhängung (siehe auch
Das erfindungsgemäße Lautsprechersystem bzw. der erfindungsgemäße Lautsprecher wird zusätzlich verbessert, wenn die rückwärtige Schallabstrahlung zu mindestens 50% durch den Innenraum des Magnetsystems erfolgt. Dies ist beispielsweise dadurch realisierbar, dass die Schwingspule im Verhältnis zum Membrandurchmesser gegenüber den bisherigen Abmessungen bekannter Vorrichtungen sehr groß ist, so dass die rückwärtige Schallabstrahlung durch den Innenraum des Magnetsystems erfolgen kann (siehe
Eine Schwingspule stellt erfindungsgemäß die Antriebseinheit für den Lautsprecher dar. Sie besteht aus einem dünnen Draht, der auf einem Schwingspulenträger aufgewickelt ist. Die Schwingspule taucht in den Luftspalt des Permanent- oder Elektromagneten ein, in dem sich ein Magnetfeld befindet. Der Spulenträger ist mit der Membraneinheit des Lautsprechers verbunden. Das sich durch Stromdurchfluss aufbauende magnetische Wechselfeld bewegt die Schwingspule mit der Membran nach vorne und nach hinten und ermöglicht es so, die Spannungsschwingungen, Luftschwingungen umzusetzen.A voice coil according to the invention represents the drive unit for the speaker. It consists of a thin wire which is wound on a voice coil former. The voice coil dips into the air gap of the permanent magnet or electromagnet, in which there is a magnetic field. The bobbin is connected to the membrane unit of the speaker. The magnetic alternating field, which builds up due to current flow, moves the voice coil with the diaphragm forwards and backwards and thus makes it possible to transduce the voltage vibrations and air vibrations.
Durch die mindestens 50%ige rückwärtige Schallabstrahlung durch das Zentrum der Magnetkonstruktion wird eine Schallabstrahlung mit sehr geringer Luftkompression erreicht.Due to the at least 50% rearward sound radiation through the center of the magnet construction, a sound radiation with very low air compression is achieved.
Die im Verhältnis zum Membrandurchmesser sehr große Schwingspule gestattet eine Reduzierung der Dynamikkompression durch Schwingspulenerwärmung.The very large voice coil in relation to the diaphragm diameter allows a reduction of the dynamic compression by voice coil heating.
Durch die sehr große Schwingspule wird ein außenliegendes Magnetsystem realisiert, welches aus einzelnen Magnetsegmenten bestehen kann, beispielsweise Teilsegmenten aus einem Ring, runden Magnetscheiben oder anderen beliebigen Formen oder einem geschlossenen Ring, um zu gewährleisten, dass die rückwärtige Schallabstrahlung durch das Zentrum der Magnetkonstruktion erfolgen kann.The very large voice coil realizes an outboard magnet system which may consist of individual magnet segments, for example sub-segments of a ring, round magnetic disks or other arbitrary shapes or a closed ring, to ensure that the rearward sound radiation can be through the center of the magnet design ,
Wenn der Schwingspulendurchmesser annähernd dem Membrandurchmesser entspricht, beispielsweise gleich groß ist, so liegt der Bereich der größten Membrandicke im Bereich der Schwingspule. Erfindungsgemäß ist mit einer sehr großen, kreisförmigen Schwingspule bevorzugt eine solche gemeint, die in den Bereich des Randes der Membran hineinreicht, beispielsweise dadurch, dass der Schwingspulendurchmesser mindestens 75% des Membrandurchmessers beträgt.If the voice coil diameter approximately corresponds to the membrane diameter, for example, is the same size, the area of the largest membrane thickness is in the range of the voice coil. According to the invention, a very large, circular voice coil preferably means one which reaches into the region of the edge of the membrane, for example in that the voice coil diameter is at least 75% of the membrane diameter.
Der Durchmesser von Membran und Schwingspule ist in einer bevorzugten Ausführungsform gleich groß; es kann jedoch in weiteren Vorzugsvarianten der Erfindung vorgesehen sein, dass der Durchmesser der Schwingspule größer ist, als der der Membran.The diameter of the membrane and voice coil is the same size in a preferred embodiment; However, it may be provided in other preferred variants of the invention that the diameter of the voice coil is greater than that of the membrane.
In einer weiteren bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Membran, bevorzugt eine Tieftönermembran, zusätzlich einen Hochtöner, bevorzugt einen Kalottenhochtöner aufweist (Koaxiallautsprecher). Ein Kalottenhochtöner ist ein dynamischer Lautsprecher, bevorzugt für Frequenzen oberhalb von etwa 2 bis 3 kHz, dessen Membran insbesondere als Kugelhaube (kalottenförmig) ausgebildet ist. Der Hochtöner besitzt bevorzugt bei hohen Frequenzen einen größeren Abstrahlwinkel als herkömmliche Lautsprecher. Der Hochtöner ist bevorzugt ein eigenständiges System, welches im Bereich der Tieftönermembran platziert ist, ohne allerdings signifikant bzw. direkt mit diesem wechselzuwirken. Der Hochtöner kann mittig bzw. zentrisch, aber auch an jedem anderen Ort der Tieftönermembran dezentral oder in der Nähe des Zentrums platziert sein. In einer bevorzugten Ausführungsform ist der Hochtöner im Zentrum des Tieftöners auf einer Achse angeordnet.In a further preferred embodiment of the invention, it is provided that the membrane, preferably a woofer membrane, additionally has a tweeter, preferably a dome tweeter (coaxial loudspeaker). A Kalottenhochtöner is a dynamic speaker, preferably for frequencies above about 2 to 3 kHz, the membrane is designed in particular as a spherical cap (dome-shaped). The tweeter preferably has a larger radiation angle at high frequencies than conventional speakers. The tweeter is preferably an independent system, which is placed in the area of the woofer membrane, but without interacting significantly or directly with it. The tweeter can be placed centrally or centrally, but also at any other location of the woofer membrane, decentralized or near the center. In a preferred embodiment, the tweeter is located in the center of the woofer on an axis.
Es ist besonders bevorzugt, wenn der innerhalb des Magnetensystems liegende Hochtöner den Schall durch eine Öffnung in der Membran des Tieftöners abstrahlt.It is particularly preferred if the tweeter inside the magnet system radiates the sound through an opening in the membrane of the woofer.
Durch die bevorzugte Dimensionierung des Magnetensystems liegt insbesondere ein in der Tieftönermembran zentrisch angeordneter Hochtöner innerhalb des Magnetensystems. Bei dem Hochtöner kann es sich beispielsweise um ein Produkt handeln, wie es in der
Wenn in der genannten bevorzugten Ausführungsform das erfindungsgemäße Lautsprechersystem zusätzlich einen Hochtöner aufweist, so kann es beispielsweise vorgesehen sein, dass dieses kombinierte Lautsprechersystem eine äußere und eine innere Aufhängung aufweist (Figur 2 (4, 5, 17)). Die Begriffe der inneren bzw. äußeren Aufhängung sind für den Fachmann selbsterklärend. Wenn ein Hochtöner in eine Tieftönermembran platziert wird, liegt zum einen ein äußerer Rand der Tieftönermembran und zum anderen auch ein äußerer Rand der Hochtönermembran vor, wobei letzterer von der Tieftönermembran zumindest teilweise umgeben ist. Die äußere Aufhängung würde beispielsweise dazu dienen, die Membran für den Tief- bzw. Mitteltonbereich zu zentrieren oder zu positionieren.If, in the said preferred embodiment, the loudspeaker system according to the invention additionally comprises a tweeter, then it may for example be provided that this combined loudspeaker system has an outer and an inner suspension (FIG. 2 (4, 5, 17)). The terms of the inner or outer suspension are self-explanatory to those skilled in the art. When a tweeter is placed in a woofer membrane, there is on the one hand an outer edge of the woofer membrane and on the other hand also an outer edge of the tweeter membrane, the latter being at least partially surrounded by the woofer membrane. For example, the outer suspension would serve to center or position the diaphragm for the mid and low frequencies.
Der sogenannte innere Ring bezeichnet den Bereich des äußeren Randes des Hochtöners, der von der Membran für den Tief- bzw. Mitteltonbereich umgeben ist. Der Bereich bzw. Spalt zwischen der Tieftöner- bzw. Mitteltonmembran und dem Hochtöner kann bevorzugt so durch dem Fachmann bekannte Materialien abgedichtet werden, dass die Membranbewegung des Lautsprechers für den Tief- bzw. Mitteltonbereich nicht eingeschränkt wird und dass Membranresonanzen gedämpft werden (Figur 2(17)).The so-called inner ring refers to the area of the outer edge of the tweeter, which is surrounded by the diaphragm for the low and midrange. The area or gap between the woofer or midrange diaphragm and the tweeter may preferably be sealed by materials known to those skilled in the art, that the membrane movement of the loudspeaker for the low and midrange is not restricted and that membrane resonances are attenuated (Figure 2 (17)).
In einer weiteren bevorzugten Ausführungsform der Erfindung ist demgemäß mindestens ein Bereich am äußeren Rand der Membran, an welcher die äußere Aufhängung (Sicke) angeordnet ist, durch einen elastischen, offenporigen oder geschlossenporigen Schaumstoff gebildet, der bevorzugt dauerelastisch ist. Selbstverständlich kann es auch vorgesehen sein, dass statt der klassischen Aufhängung der Membran eine Zentrierung dieser dadurch erfolgt, dass die Membran innerhalb des Chassis durch Schaumstoffe positioniert wird. Es kann beispielsweise bevorzugt sein, dass die Membran für den Tief- bzw. Mitteltonbereich mit einem Gewebe wie Acryl-, Nomex- und/oder Baumwollgewebe in Kombination mit Phenolund/oder Epoxidharz oder aber durch eine Gummikonstruktion in Form einer Aufhängung positioniert bzw. zentriert wird.In a further preferred embodiment of the invention, accordingly, at least one region at the outer edge of the membrane, on which the outer suspension (bead) is arranged, formed by an elastic, open-pore or closed-cell foam, which is preferably permanently elastic. Of course, it can also be provided that, instead of the conventional suspension of the membrane, this is centered by the fact that the membrane is positioned within the chassis by foams. It may, for example, be preferred that the membrane for the low and mid-tone regions is positioned or centered with a fabric such as acrylic, nomex and / or cotton fabric in combination with phenolic and / or epoxy resin or by a rubber construction in the form of a suspension ,
Es war völlig überraschend, dass diese genannten technischen Merkmale in Kombination mit den bereits ausgeführten, weiteren erfindungsgemäßen Merkmalen zu der Konstruktion eines Koaxiallautsprechers führt, der gegenüber den bekannten Vorrichtungen eine verbesserte Klangqualität aufweist.It was completely surprising that these mentioned technical features, in combination with the further features according to the invention already described, lead to the construction of a coaxial loudspeaker which has an improved sound quality compared to the known devices.
Der Einsatz von Schaumstoff als innere Aufhängung und zur Abdichtung des Luftspalts zwischen Tief- oder Mitteltonmembran und Hochtöner ist insbesondere bei der o. g. Kombination von Membran und Hochtöner bevorzugt, insbesondere wenn die Grundkonstruktion für den Tief- bzw. Mitteltonbereich als ebene Fläche erfolgt, die dann die unmittelbare Umgebung des Hochtöners bildet. Es war völlig überraschend, dass der Einsatz von Schaumstoff als innere Aufhängung die Konstruktion eines Koaxiallautsprechers erlaubt, der gegenüber den bekannten Vorrichtungen eine verbesserte Klangqualität aufweist.The use of foam as an inner suspension and to seal the air gap between low or midrange and tweeter is especially in the o. G. Combination of membrane and tweeter preferred, especially if the basic construction for the low and mid-tone area as a flat surface, which then forms the immediate vicinity of the tweeter. It was quite surprising that the use of foam as an internal suspension allows the construction of a coaxial loudspeaker that has improved sound quality over the known devices.
In einer weiteren bevorzugten Ausführungsform der Erfindung umfasst das Magnetensystem mindestens einen Magneten bevorzugt aus der Gruppe umfassend einen Samarium-Kobaltmagneten, einen Cer-Kobaltmagneten, einen Aluminium-Nickel-Kobaltmagneten, einen Ferritmagneten und/oder bevorzugt einen Neodymmagneten.In a further preferred embodiment of the invention, the magnet system comprises at least one magnet preferably from the group comprising a samarium cobalt magnet, a cerium-cobalt magnet, an aluminum-nickel-cobalt magnet, a ferrite magnet and / or preferably a neodymium magnet.
Das erfindungsgemäße Lautsprechersystem weist bevorzugt eine Membran auf, die insbesondere als Sandwich-Membran ausgebildet ist, die durch die Kombination von Kernmaterial und Deckschichten steif ausgebildet werden kann.The loudspeaker system according to the invention preferably has a membrane, which is designed in particular as a sandwich membrane, which can be formed stiff by the combination of core material and cover layers.
Bevorzugt weist das Kernmaterial eine Wabenstruktur auf und kann beispielsweise aus Aramidfasern, Papier, Polyester, Polypropylen oder Aluminium gebildet sein. Die Deckschichten der Membran können Faserwerkstoffe, Metallfolien und/oder. Kunststofffolien umfassen. Bei den Faserwerkstoffen kann es sich beispielsweise um Papier oder Baumwolle handeln. Selbstverständlich ist es auch möglich, technische Gewebe aus Kohlefasern oder Glasfasern bzw. Aramidfasern oder Gelege einzusetzen, bei denen Fasern unidirektional nebeneinander positioniert vorliegen.The core material preferably has a honeycomb structure and can be formed, for example, from aramid fibers, paper, polyester, polypropylene or aluminum. The cover layers of the membrane may be fiber materials, metal foils and / or. Include plastic films. The fiber materials may be, for example, paper or cotton. Of course, it is also possible to use technical fabrics of carbon fibers or glass fibers or aramid fibers or scrims, in which fibers are positioned unidirectionally next to one another.
Beim Einsatz von Geweben aus Kohle-, Glas- oder Aramidfasern muss das Gewebe zumindest auf einer Seite eine matrixartige Struktur aufweisen, die beispielsweise aus Thermo- oder Duroplasten hergestellt werden kann.When using fabrics of carbon, glass or aramid fibers, the fabric must have a matrix-like structure on at least one side, which can be produced, for example, from thermoplastics or thermosets.
Bevorzugt kann es sich bei den Faserwerkstoffen um Faser-Kunststoff-Verbünde handeln, die aus Verstärkungsfasern und einer Kunststoffmatrix bestehen. Die Matrix umgibt die Fasern, die durch Adhäsiv- oder Kohäsivkräfte an die Matrix gebunden sind. Erfindungsgemäß kann der Faser-Kunststoff-Verbund als Konstruktion aufgefasst werden.Preferably, the fiber materials may be fiber-plastic composites consisting of reinforcing fibers and a plastic matrix. The matrix surrounds the fibers which are bonded to the matrix by adhesive or cohesive forces. According to the invention, the fiber-plastic composite can be construed as a construction.
Seine Elemente müssen so kombiniert werden, dass sich die gewünschten Eigenschaften herausbilden. Durch das Zusammenspiel der spezifischen Eigenschaften von Faserwerkstoff und Matrixwerkstoff entstehen die gewünschten Ausgangsmaterialien für die Membranbeschichtung bzw. Membranverstärkung. In die Matrix werden Fasern gebettet, d. h. die Fasern werden räumlich fixiert, was eine Lastein- und -ausleitung ermöglicht. Zusätzlich stützt die Matrix die Fasern. Die Lastübertragung erfolgt durch die Adhäsion zwischen Faser, Matrix und Kern. Bei den Fasern kann es sich beispielsweise um Aramid-, Kohlenstoff-, Polyester-, Nylon-, Polyethylen-, Keramik-, Glas-, Bohr-, Flachs-, Hanf- und/oder andere Fasern handeln.Its elements must be combined in such a way that the desired properties develop. The interplay of the specific properties of fiber material and matrix material produces the desired starting materials for membrane coating or membrane reinforcement. Fibers are embedded in the matrix, i. H. The fibers are spatially fixed, which allows a load input and output. In addition, the matrix supports the fibers. The load is transferred by the adhesion between fiber, matrix and core. The fibers may be, for example, aramid, carbon, polyester, nylon, polyethylene, ceramic, glass, drilling, flax, hemp and / or other fibers.
Im Folgenden soll die Erfindung anhand von Beispielen näher erläutert werden, ohne auf diese Beispiele beschränkt zu sein.In the following, the invention will be explained in more detail by means of examples, without being limited to these examples.
Die Figuren zeigen:
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Figur 1 : Querschnitt durch eine erfindungsgemäße Membran und ein Lautsprecherchassis, wobei die Membran mittels einer spiegelbildlich aus zwei Teilen aufgebauten, nachgiebigen Membranaufhängung zentriert und positioniert ist. -
Figur 2 : Querschnitt einer erfindungsgemäßen Membran mit einem zentrisch angeordneten Hochtöner. -
+4: Zeigen den Querschnitt einer Gehäusewand in einem Lautsprechersystem.Figur 3
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FIG. 1 : Cross section through a membrane according to the invention and a loudspeaker chassis, wherein the membrane is centered and positioned by means of a mirror-image constructed of two parts, compliant membrane suspension. -
FIG. 2 : Cross section of a membrane according to the invention with a centrically arranged tweeter. -
FIG. 3 +4: Show the cross-section of a housing wall in a speaker system.
Eine um die mechanische Ruhelage beispielhaft vollkommen symmetrische Aufhängung in Form von zwei gespiegelten, identischen Aufhängungen erlaubt die Konstruktion eines vorteilhaften Lautsprechersystems. Eine im Verhältnis zum Membrandurchmesser ähnlich große Schwingspule nebst Schwingspulenträger (6, 7) zur Reduzierung der durch Schwingspulenerwärmung hervorgerufenen Dynamikkompression verbessert das beispielhafte Lautsprechersystem zusätzlich. Das außenliegende Magnetsystem (10, 11, 12) besteht aus einzelnen Magnetsegmenten oder einem geschlossenen Ring zur Gewährleistung einer Hauptschallabstrahlung durch das Zentrum der Magnetkonstruktion mit sehr geringer Luftkompression.An example of the mechanical rest position perfectly symmetrical suspension in the form of two mirrored identical suspensions allows the construction of an advantageous speaker system. A voice coil of similar size to the diaphragm diameter and voice coil carrier (6, 7) for reducing the dynamic compression caused by voice coil heating additionally improves the exemplary loudspeaker system. The external magnet system (10, 11, 12) consists of individual magnet segments or a closed ring to ensure a main sound radiation through the center of the magnet construction with very low air compression.
Ein weiterer Vorteil der Konstruktion ergibt sich, wenn sie als Koaxiallautsprecher (wie in
Voraussetzung für die sinnvolle akustische Funktionsweise bis in den Mitteltonbereich hinein ist die Verwendung moderner Leichtbaustoffe für die Membran.Prerequisite for the meaningful acoustic function into the midrange is the use of modern lightweight materials for the membrane.
Die
Die unmittelbare Nähe zu Gehäusewänden sorgt bei den bekannten Chassis zu starken Reflektionen von Innenseiten der Wandungen zurück, die durch die Membran nach außen geworfen und damit akustisch störend wirksam werden (18). Eine Bedämpfung an dieser Stelle ist wegen Platzmangels nicht effektiv möglich. Aus diesem Grunde empfiehlt es sich bei herkömmlichen Lautsprechern zur Vermeidung der zuvor genannten Probleme eine im Verhältnis zum Lautsprecherchassis breite Schallwand zu wählen. Bei der beispielhaften Konstruktion aus
Zum anderen wird der Schall, der zu den Seiten austritt, bei der Reflektion nach außen besser eingedämmt, da er zwei Membranteile mit dazwischen liegenden Luftvolumina zu passieren hat.On the other hand, the sound that escapes to the sides is better contained in the reflection to the outside, since he has to pass two membrane parts with air volumes in between.
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Figur 1FIG. 1 ::- 1 Membran1 membrane
- 2 Kernmaterial2 nuclear material
- 3 Deckschichten3 cover layers
- 4 eine um die mechanische Ruhelage der Membran achssymmetrische Aufhängung in Form von zwei gespiegelten, identischen KomponentenFIG. 4 shows a suspension symmetrical about the mechanical rest position of the diaphragm in the form of two mirrored, identical components. FIG
- 6 Schwingspulenträger6 voice coil bobbins
- 7 Schwingspule7 voice coil
- 8 Schwingspulenzuführung8 voice coil feed
- 9 Anschlussstecker9 connector
- 10 Obere Polplatte10 Upper pole plate
- 11 Untere Polplatte11 Lower pole plate
- 12 Magnet12 magnet
- 13 Abstandshülse13 spacer sleeve
- 14 Schraube14 screw
- 15 Korb15 basket
-
Figur 2:FIG. 2: - 1 Membran1 membrane
- 4 eine um die mechanische Ruhelage der Membran achssymmetrische Aufhängung in Form von zwei gespiegelten, identischen KomponentenFIG. 4 shows a suspension symmetrical about the mechanical rest position of the diaphragm in the form of two mirrored, identical components. FIG
- 5 eine um die mechanische Ruhelage der Membran achssymmetrische Aufhängung in Form von einer KomponenteFIG. 5 shows a suspension in the form of a component that is axisymmetric about the mechanical rest position of the diaphragm. FIG
- 15 Korb15 basket
- 17 innere Aufhängung/Dichtring17 inner suspension / sealing ring
- 16 Hochtöner16 tweeters
-
Figur 3FIG. 3 ::- 1 Membran1 membrane
- 15 Korb15 basket
- 18 frühe Reflexionen18 early reflections
- 19 Primärschall von der Membran19 primary sound from the membrane
-
Figur 4FIG. 4 ::- 20 komprimierte Schallwellen20 compressed sound waves
Claims (8)
- Loudspeaker system comprising at least one membrane (1), one mounting suspension (5.4) for it, a magnet system (12) and a voice coil (8) whereby the membrane (1) features an axially symmetric mounting suspension around the mechanical rest position of this membrane (1) and whereby at least 50% of the rearward main emission takes place through the internal space of the magnet system,
characterized in that
the membrane (1) at the outer diameter has a thickness of more than 10% of the membrane diameter. - Loudspeaker system according to claim 1,
characterized in that
the membrane is designed as a woofer membrane and in that it also features a tweeter. - Loudspeaker system according to one of the previous claims,
characterized in that
the ratio between the diameter of the voice coil and the diameter of the membrane is at least 0.75:1. - Loudspeaker system according to one of the claims 2 and/or 3,
characterized in that
the tweeter inside the magnet system emits the sound through an opening in the membrane of the woofer. - Loudspeaker system according to one of the previous claims,
characterized in that
at least one area of a bead of the membrane is made up of an elastic foam material. - Loudspeaker system according to one of the previous claims, whereby the magnet system comprises at least one magnet selected from the group comprising a samarium-cobalt magnet, a cerium-cobalt magnet, an aluminum-nickel-cobalt magnet, a ferrite magnet and/or neodymium magnet.
- Loudspeaker system according to one of the previous claims,
characterized in that
the membrane is a sandwich membrane. - Loudspeaker system according to claim 7,
characterized in that
the core material of the sandwich membrane is comprised of a honeycomb structure made of aramid fibers, paper, Nomex, plastic, preferably polyester and/or polypropylene and/or that the covering layers are comprised of fiber materials, metal foils and/or plastic foils or that the core material is comprised of foam, preferably technical foam materials.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09752105A EP2213106B1 (en) | 2008-10-21 | 2009-10-21 | Flat diaphragm loudspeaker |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08075841A EP2180721A1 (en) | 2008-10-21 | 2008-10-21 | Flat membrane loudspeaker |
EP09752105A EP2213106B1 (en) | 2008-10-21 | 2009-10-21 | Flat diaphragm loudspeaker |
PCT/EP2009/007635 WO2010046132A1 (en) | 2008-10-21 | 2009-10-21 | Flat diaphragm loudspeaker |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2213106A1 EP2213106A1 (en) | 2010-08-04 |
EP2213106B1 true EP2213106B1 (en) | 2012-08-15 |
Family
ID=40414094
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08075841A Withdrawn EP2180721A1 (en) | 2008-10-21 | 2008-10-21 | Flat membrane loudspeaker |
EP09752105A Not-in-force EP2213106B1 (en) | 2008-10-21 | 2009-10-21 | Flat diaphragm loudspeaker |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08075841A Withdrawn EP2180721A1 (en) | 2008-10-21 | 2008-10-21 | Flat membrane loudspeaker |
Country Status (5)
Country | Link |
---|---|
US (1) | US8891810B2 (en) |
EP (2) | EP2180721A1 (en) |
CN (1) | CN102187688A (en) |
RU (1) | RU2523094C2 (en) |
WO (1) | WO2010046132A1 (en) |
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CN101990142B (en) * | 2009-08-05 | 2013-12-11 | 清华大学 | Voice coil lead wire and loudspeaker using same |
KR101697251B1 (en) | 2011-01-04 | 2017-01-17 | 삼성전자주식회사 | speaker and method for assembling the speaker |
EP2624596A4 (en) * | 2011-05-19 | 2015-07-08 | Tang Band Ind Co Ltd | Ultrathin electromagnetic vibration device and manufacture method thereof |
CN102186133A (en) * | 2011-06-04 | 2011-09-14 | 吉林省神韵电子科技开发有限公司 | Ultrathin flat panel loudspeaker |
JP4891465B1 (en) * | 2011-08-09 | 2012-03-07 | 三菱電機株式会社 | Electrodynamic sound emitter |
WO2013127096A1 (en) * | 2012-02-28 | 2013-09-06 | Sung Waileung | Folding loudspeaker vibrating diaphragm |
GB2500718A (en) * | 2012-03-30 | 2013-10-02 | Paul Raymond Knight | Edge- or circumferentially driven planar loudspeaker with Neodymium magnet system |
US9124967B2 (en) * | 2012-09-26 | 2015-09-01 | Terrance Marshall Morton | Microphone systems for base drums and other instruments |
US9838793B2 (en) * | 2013-06-14 | 2017-12-05 | Genelec Oy | Suspension element for suspending the diaphragm of a loudspeaker driver to the chassis thereof as well as driver and loudspeaker comprising the same |
DE102014101075B3 (en) * | 2014-01-29 | 2015-03-12 | Heraeus Materials Technology Gmbh & Co. Kg | Method for producing a loudspeaker membrane |
CN105706465A (en) | 2014-07-04 | 2016-06-22 | 松下知识产权经营株式会社 | Loudspeaker and mobile device incorporating same |
JP6634605B2 (en) * | 2014-09-10 | 2020-01-22 | パナソニックIpマネジメント株式会社 | Loudspeaker and mobile device equipped with it |
CN204929240U (en) * | 2015-08-10 | 2015-12-30 | 常州美欧电子有限公司 | Loudspeaker |
CN204929239U (en) * | 2015-08-10 | 2015-12-30 | 常州美欧电子有限公司 | Loudspeaker |
JP6976252B2 (en) | 2015-09-14 | 2021-12-08 | ウィング アコースティックス リミテッド | Improvements in or with respect to audio transducers |
US9980050B2 (en) * | 2015-09-29 | 2018-05-22 | Coleridge Design Associates Llc | System and method for a loudspeaker with a diaphragm |
GB2549955A (en) | 2016-05-03 | 2017-11-08 | 4A Mfg Gmbh | Membrane plate structure for generating sound waves |
US10034093B2 (en) * | 2016-08-22 | 2018-07-24 | 4A Manufacturing Gmbh | Temperature stable membrane plate structure for a loudspeaker |
US10028060B2 (en) * | 2016-08-22 | 2018-07-17 | 4A Manufacturing Gmbh | Temperature stable membrane plate structure for a loudspeaker |
WO2018167538A1 (en) | 2017-03-15 | 2018-09-20 | Wing Acoustics Limited | Improvements in or relating to audio systems |
TW201904310A (en) | 2017-03-22 | 2019-01-16 | 紐西蘭商威恩音響有限公司 | System, method and device for audio converter, thin electronic device and hinge system |
DE102018128386A1 (en) * | 2018-11-13 | 2020-05-14 | Kendrion Kuhnke Automotive GmbH | Loudspeaker, motor vehicle with loudspeaker and use |
GB201907267D0 (en) * | 2019-05-23 | 2019-07-10 | Pss Belgium Nv | Loudspeaker |
WO2021000117A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
CN113423046B (en) * | 2021-06-09 | 2022-09-20 | 歌尔股份有限公司 | Loudspeaker diaphragm, loudspeaker diaphragm preparation method and sound production device |
RU208011U1 (en) * | 2021-09-01 | 2021-11-29 | Общество с ограниченной ответственностью "Специальные Звуковые Технологии" | COMBINED COAXIAL SPEAKER |
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US1832832A (en) * | 1930-01-09 | 1931-11-17 | Delaware Chemical Engineering | Sound reproducing means |
US3046362A (en) * | 1956-11-06 | 1962-07-24 | Stanley F White | Speaker |
US3111187A (en) * | 1959-11-23 | 1963-11-19 | H J Leak & Company Ltd | Diaphragm for electro acoustic transducer |
SE387512B (en) * | 1973-08-24 | 1976-09-06 | S Carlsson | SPEAKERS FOR STEROPHONIC SOUND DETERMINATION SYSTEM, AND TWO SUCH SPEAKERS EXISTING SPEAKERS |
JPS5613896A (en) * | 1979-07-13 | 1981-02-10 | Matsushita Electric Ind Co Ltd | Speaker diaphragm |
US4532383A (en) * | 1980-01-04 | 1985-07-30 | Willy Erazm A | Electroacoustic transducer having a variable thickness diaphragm |
US4410768A (en) * | 1980-07-23 | 1983-10-18 | Nippon Gakki Seizo Kabushiki Kaisha | Electro-acoustic transducer |
JPS6091798A (en) * | 1983-10-26 | 1985-05-23 | Matsushita Electric Ind Co Ltd | Composite speaker |
US5883967A (en) * | 1997-04-15 | 1999-03-16 | Harman International Industries, Incorporated | Slotted diaphragm loudspeaker |
JP4081842B2 (en) * | 1998-03-11 | 2008-04-30 | ソニー株式会社 | Speaker device |
JPH11275678A (en) * | 1998-03-25 | 1999-10-08 | Sony Corp | Loudspeaker device |
JP3905652B2 (en) * | 1998-10-07 | 2007-04-18 | フォスター電機株式会社 | Method for manufacturing diaphragm for electroacoustic transducer |
US6044925A (en) * | 1998-11-30 | 2000-04-04 | Sahyoun; Joseph Yaacoub | Passive speaker |
US6870941B2 (en) * | 2002-07-15 | 2005-03-22 | Glenn A. Marnie | Dipole radiating dynamic speaker |
US20060286379A1 (en) * | 2002-08-13 | 2006-12-21 | Yong Gao | Magnetic nanoparticle supports |
DE10303030A1 (en) * | 2003-01-25 | 2004-08-05 | Norman Gerkinsmeyer | driver |
FR2854021B1 (en) * | 2003-04-16 | 2006-03-31 | Focal Jmlab | ACOUSTIC TRANSDUCER IN DIRECT RADIATION DIRECT RADIATION BERYLLIUM ACRYLIC, FOR CONCAVE-SHAPED MEMBRANE, FOR AUDIO APPLICATIONS ESPECIALLY FOR ACOUSTIC SPEAKERS |
JPWO2005015947A1 (en) * | 2003-08-12 | 2006-10-12 | 株式会社村田製作所 | Diffuser and speaker using the same |
DE202004015635U1 (en) | 2004-10-07 | 2004-12-02 | Elac Electroacustic Gmbh | Coaxial speaker with wave-shaped membrane |
DE102005017389A1 (en) * | 2005-04-14 | 2006-11-02 | Norman Gerkinsmeyer | Beading for forming with sprayed on membrane and ring for loudspeaker diaphragm has annular slot has membrane made from metal film, polymer, metallized polymer, carbon or metal fibers |
JP4717021B2 (en) * | 2007-02-05 | 2011-07-06 | シャープ株式会社 | Speaker device |
-
2008
- 2008-10-21 EP EP08075841A patent/EP2180721A1/en not_active Withdrawn
-
2009
- 2009-10-21 WO PCT/EP2009/007635 patent/WO2010046132A1/en active Application Filing
- 2009-10-21 CN CN200980141770.5A patent/CN102187688A/en active Pending
- 2009-10-21 RU RU2011106827/28A patent/RU2523094C2/en not_active IP Right Cessation
- 2009-10-21 EP EP09752105A patent/EP2213106B1/en not_active Not-in-force
- 2009-10-21 US US13/125,140 patent/US8891810B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN102187688A (en) | 2011-09-14 |
WO2010046132A1 (en) | 2010-04-29 |
EP2180721A1 (en) | 2010-04-28 |
US8891810B2 (en) | 2014-11-18 |
RU2523094C2 (en) | 2014-07-20 |
US20110299716A1 (en) | 2011-12-08 |
EP2213106A1 (en) | 2010-08-04 |
RU2011106827A (en) | 2012-08-27 |
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