EP3108666B1 - Loudspeaker - Google Patents

Loudspeaker Download PDF

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Publication number
EP3108666B1
EP3108666B1 EP15706384.3A EP15706384A EP3108666B1 EP 3108666 B1 EP3108666 B1 EP 3108666B1 EP 15706384 A EP15706384 A EP 15706384A EP 3108666 B1 EP3108666 B1 EP 3108666B1
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EP
European Patent Office
Prior art keywords
loudspeaker
magnet
basket
snap
conical
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EP15706384.3A
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German (de)
French (fr)
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EP3108666A1 (en
Inventor
Jörg Prokisch
Robert Obermaier
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Harman Becker Automotive Systems GmbH
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Harman Becker Automotive Systems GmbH
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Publication of EP3108666A1 publication Critical patent/EP3108666A1/en
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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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to a loudspeaker.
  • the document GB 1 069 120 shows a speaker, wherein a speaker basket is attached to a cone-shaped magnet. From the DE 1 950 188 A1 is a speaker with a loudspeaker basket and a magnet known. In the DE 80 16 205 U1 a speaker is shown with a loudspeaker basket, a top plate and a permanent magnet.
  • the upper plate has hollow rivets for attaching the loudspeaker frame to the upper side, which are formed by impressing recesses on the opposite side of the upper plate.
  • the permanent magnet is glued to the underside of the top plate.
  • the invention is based on the object to provide a loudspeaker that allows the fastest possible production.
  • a speaker with a speaker basket and a magnet is provided.
  • the loudspeaker basket is attached to the magnet.
  • the magnet has a cone-shaped outer surface. If the cone-shaped outer surface is considered part of a truncated cone, can This conical outer surface may also be referred to as a lateral surface.
  • the loudspeaker basket has a conical inner surface.
  • the cone-shaped inner surface is formed to form a press fit with the cone-shaped outer surface of the magnet. In press fit the cone-shaped inner surface of the loudspeaker frame is pressed onto the conical outer surface of the magnet.
  • the magnet has at least one undercut.
  • the loudspeaker basket has a number of snap hooks. In press fit engages at least one snap hook in the undercut.
  • the cone-shaped inner surface of the loudspeaker frame is produced by injection molding.
  • a wall with the conical inner surface and the at least one snap hook of the loudspeaker frame are integrally formed.
  • Wall with the cone-shaped inner surface and the at least one snap hook of the speaker basket made of a plastic material, in particular polycarbonate with 10% glass fiber, formed.
  • a wall thickness of the loudspeaker frame in the region of the conical inner surface is greater than a wall thickness of the snap-action hook.
  • the snap hooks are formed adjacent to the cone-shaped inner surface of the loudspeaker frame.
  • the conical outer surface of the magnet is made by turning.
  • the cone-shaped inner surface of the loudspeaker frame is produced by injection molding.
  • the press fit deforms the material of the loudspeaker frame in the area of the press fit.
  • Fig. 1 is a part of a speaker basket 100 of a speaker in isometric view shown schematically.
  • the loudspeaker basket 100 has a conical inner surface 110.
  • a number snap hooks 101, 102 are formed in the execution of Fig. 1 adjacent to the cone-shaped inner surface 110.
  • the snap hooks 101, 102 are in the execution of Fig. 1 arranged rotationally symmetrical.
  • the snap hooks 101, 102 are in the execution of Fig. 1 arranged adjacent to the cone-shaped inner surface 110 over the entire circumference.
  • the snap hooks 101, 102 may be made of an elastic material, such as plastic or metal.
  • the snap hooks 101, 102 are in an embodiment of Fig. 1 made of the same material as a wall in the region of the conical inner surface 110 of the loudspeaker frame 100.
  • the material of the speaker basket 100 is for example metal or plastic.
  • the conical inner surface 110 and the snap hooks 101, 102 of the loudspeaker basket 100 are formed of the plastic polycarbonate with 10% glass fiber.
  • the in Fig. 1 shown part of the speaker basket is made for example by injection molding.
  • the snap hooks 101, 102 have an elasticity for a snap function.
  • FIG. 2 a schematic sectional view through a part of a loudspeaker basket 100 is shown.
  • a conical inner surface 110 of the loudspeaker frame 100 may also be referred to as a lateral surface in the sense of a truncated cone.
  • the angle ⁇ 1 (half the opening angle) between the generatrix line and the cone axis is for example 4 °.
  • the angle ⁇ 2 between a snap hook 101 and the cone axis is for example 10 °.
  • a magnet 200 of a loudspeaker in sectional view is shown schematically.
  • the magnet 200 consists of a material for a permanent magnet, for example of ferrous metals and rare earth metals.
  • the magnet 200 is rotationally symmetrical.
  • the magnet 200 has a cone-shaped outer surface 210.
  • the conical outer surface 210 of the magnet 200 is in the embodiment of Fig. 3 made by turning.
  • the conical outer surface 210 of the magnet 200 may also be referred to as a lateral surface in the sense of a truncated cone.
  • the angle ⁇ 1 (half the opening angle) between the generatrix line and the cone axis is, for example, 3 °.
  • the angle ⁇ 1 (half the opening angle) between the generatrix and cone axis of the magnet 200 is smaller than the angle ⁇ 1 (half the opening angle) between the generatrix and cone axis of the loudspeaker frame 100.
  • Between the lateral surface 210 and an undercut 230 extends a further lateral surface 220.
  • the angle ⁇ 2 (half the opening angle) between the generatrix of the further lateral surface 220 and the cone axis is greater than the angle ⁇ 1 .
  • the cone-shaped outer surface 220 of the magnet 200 and the conical inner surface 110 of the loudspeaker frame 100 are provided for a conical interference fit.
  • the loudspeaker basket 100 is slipped with its opening over the magnet 100 from the side opposite to a shoulder 250 of the magnet 200.
  • the magnet 200 has at least one undercut 230.
  • the undercut 230 is rotationally symmetrical.
  • the undercut 230 is generated, for example, by turning.
  • the undercut 230 is associated with the snap hook 101, 102 of the loudspeaker basket 100, wherein the snap hooks 101, 102 engage in the undercut 230 in the mounted state of the press fit.
  • the magnet 200 has a plurality of undercuts, thereby causing a plurality of latching positions. Deviating from the execution of Fig.
  • the loudspeaker basket 100 has a plurality of snap hooks 101, 102 with stepped lengths, so that a plurality of latching positions are also effected, wherein not all snap hooks engage. As a result, tolerances in the production of the magnet 200 and the speaker basket 100 can be compensated.
  • Fig. 4 1 shows a schematic detail sectional view of the loudspeaker basket 100 fastened to the magnet 200 by means of press fit 150.
  • a shoulder 250 of the magnet forms a stop for the loudspeaker basket 100.
  • An adhesive 300 can optionally additionally be provided between the shoulder 250 and the loudspeaker basket 100.
  • the conical inner surface 110 of the loudspeaker frame 100 is made Fig. 1 the conical outer surface 210 of the magnet 200 from Fig. 3 facing.
  • the magnet 200 in the region of the conical outer surface 210 of a harder material than a wall 120 of the loudspeaker frame 100 in the region of the conical inner surface 110.
  • the plastic of the wall 120 of the loudspeaker basket 100 is deformed in the press fit 150.
  • a snap hook 101 of the speaker basket 100 engages in the undercut 230 of the magnet 200.
  • the snap hook 101 is formed from an elastic material, such as plastic.
  • the snap hook 101 is formed integrally with the wall 120 of the speaker basket 100 of a plastic material.
  • a wall thickness of the snap hook 101 is significantly smaller than the wall thickness of the wall 120. Inadvertent release of the attachment between magnet 200 and loudspeaker basket 100 is effectively secured by snapping the snap hook 101 into the undercut 230. For the desired release, the snap hook 101 would first have to be brought out of the undercut 230.
  • the invention is not limited to the illustrated embodiments of the FIGS. 1 to 4 limited.
  • the functionality of the fastening medium press fit according to Fig. 4 can be used particularly advantageously for a center speaker.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Description

Die vorliegende Erfindung betrifft einen Lautsprecher. Das Dokument GB 1 069 120 zeigt einen Lautsprecher, wobei ein Lautsprecherkorb an einem konusförmigen Magneten befestigt wird. Aus der DE 1 950 188 A1 ist ein Lautsprecher mit einem Lautsprecherkorb und einem Magneten bekannt. In der DE 80 16 205 U1 ist ein Lautsprecher mit einem Lautsprecherkorb, einer Oberplatte und einem Dauermagnet gezeigt. Die Oberplatte hat zur Befestigung des Lautsprecherkorbs an der Oberseite Hohlnieten, die durch Eindrücken von Vertiefungen an der gegenüberliegenden Seite der Oberplatte ausgeformt werden. An der Unterseite der Oberplatte wird der Dauermagnet angeklebt.The present invention relates to a loudspeaker. The document GB 1 069 120 shows a speaker, wherein a speaker basket is attached to a cone-shaped magnet. From the DE 1 950 188 A1 is a speaker with a loudspeaker basket and a magnet known. In the DE 80 16 205 U1 a speaker is shown with a loudspeaker basket, a top plate and a permanent magnet. The upper plate has hollow rivets for attaching the loudspeaker frame to the upper side, which are formed by impressing recesses on the opposite side of the upper plate. The permanent magnet is glued to the underside of the top plate.

Der Erfindung liegt die Aufgabe zu Grunde, einen Lautsprecher anzugeben, der eine möglichst schnelle Herstellung ermöglicht.The invention is based on the object to provide a loudspeaker that allows the fastest possible production.

Diese Aufgabe wird durch einen Lautsprecher mit den Merkmalen des unabhängigen Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand von abhängigen Ansprüchen und in der Beschreibung enthalten.This object is achieved by a loudspeaker having the features of independent claim 1. Advantageous developments are the subject of dependent claims and included in the description.

Demzufolge ist ein Lautsprecher mit einem Lautsprecherkorb und einem Magneten vorgesehen.Accordingly, a speaker with a speaker basket and a magnet is provided.

Der Lautsprecherkorb ist an dem Magneten befestigt.The loudspeaker basket is attached to the magnet.

Der Magnet weist eine konusförmige Außenfläche auf. Wird die konusförmige Außenfläche als Teil eines Kegelstumpfs aufgefasst, kann diese konusförmige Außenfläche auch als Mantelfläche bezeichnet werden.The magnet has a cone-shaped outer surface. If the cone-shaped outer surface is considered part of a truncated cone, can This conical outer surface may also be referred to as a lateral surface.

Der Lautsprecherkorb weist eine konusförmige Innenfläche auf. Die konusförmige Innenfläche ist zur Ausbildung einer Presspassung mit der konusförmigen Außenfläche des Magneten ausgebildet. In Presspassung ist die konusförmige Innenfläche des Lautsprecherkorbs auf die konusförmige Außenfläche des Magneten gepresst.The loudspeaker basket has a conical inner surface. The cone-shaped inner surface is formed to form a press fit with the cone-shaped outer surface of the magnet. In press fit the cone-shaped inner surface of the loudspeaker frame is pressed onto the conical outer surface of the magnet.

Der Magnet weist zumindest einen Hinterschnitt auf. Der Lautsprecherkorb weist eine Anzahl Schnapphaken auf. In Presspassung greift zumindest ein Schnapphaken in den Hinterschnitt ein.The magnet has at least one undercut. The loudspeaker basket has a number of snap hooks. In press fit engages at least one snap hook in the undercut.

Durch konkrete Umsetzungen, wie diese beispielsweise in den Ausführungsbeispielen der Figuren erläutert ist, werden mehrere Vorteile erzielt. Durch das Eingreifen des Schnapphakens in den Hinterschnitt im Magneten wird ein Lösen des Lautsprecherkorbs vom Magneten entgegen der Montagerichtung verhindert. Hingegen kann die Montage der Befestigung zwischen Lautsprecherkorb und Magneten in einer einzigen Bewegung durch Erzeugung der Presspassung erfolgen. Die Zykluszeiten bei der Herstellung können durch diese Befestigung von Magnet und Lautsprecherkorb deutlich verringert mithin die Produktivität gegenüber anderen Befestigungsarten - wie beispielsweise Einspritzen - signifikant erhöht werden.By concrete implementations, as explained for example in the embodiments of the figures, several advantages are achieved. By engaging the snap hook in the undercut in the magnet loosening of the loudspeaker frame by the magnet is prevented against the mounting direction. On the other hand, the mounting of the attachment between the loudspeaker frame and the magnet can be done in a single movement by creating the interference fit. Cycle times during manufacture can be significantly reduced by this attachment of the magnet and the loudspeaker basket, thus significantly increasing the productivity compared to other types of fastening, such as injection.

Die im Folgenden aufgeführten Weiterbildungen können die mechanische Festigkeit der Verbindung und die Schnelligkeit des Montageprozesses weiter verbessern.The further developments listed below can further improve the mechanical strength of the connection and the speed of the assembly process.

Gemäß einer Ausführung ist die konusförmige Innenfläche des Lautsprecherkorbs durch Spritzguss hergestellt.According to one embodiment, the cone-shaped inner surface of the loudspeaker frame is produced by injection molding.

Gemäß einer anderen Ausführung sind eine Wandung mit der konusförmigen Innenfläche und der zumindest eine Schnapphaken des Lautsprecherkorbs einstückig ausgeformt.According to another embodiment, a wall with the conical inner surface and the at least one snap hook of the loudspeaker frame are integrally formed.

Gemäß einer anderen Ausführung sind eine. Wandung mit der konusförmigen Innenfläche und der zumindest eine Schnapphaken des Lautsprecherkorbs aus einem Kunststoffmaterial, insbesondere Polycarbonat mit 10% Glasfaser, ausgebildet.According to another embodiment are a. Wall with the cone-shaped inner surface and the at least one snap hook of the speaker basket made of a plastic material, in particular polycarbonate with 10% glass fiber, formed.

Gemäß einer anderen Ausführung ist eine Wanddicke des Lautsprecherkorbs im Bereich der konusförmigen Innenfläche größer als eine Wanddicke des Schnapphakens.According to another embodiment, a wall thickness of the loudspeaker frame in the region of the conical inner surface is greater than a wall thickness of the snap-action hook.

Gemäß einer anderen Ausführung sind die Schnapphaken angrenzend an die konusförmige Innenfläche des Lautsprecherkorbs ausgebildet.According to another embodiment, the snap hooks are formed adjacent to the cone-shaped inner surface of the loudspeaker frame.

Gemäß einer anderen Ausführung ist die konusförmige Außenfläche des Magneten durch Drehen hergestellt.According to another embodiment, the conical outer surface of the magnet is made by turning.

Gemäß einer anderen Ausführung ist die konusförmige Innenfläche des Lautsprecherkorbs durch Spritzguss hergestellt.According to another embodiment, the cone-shaped inner surface of the loudspeaker frame is produced by injection molding.

Gemäß einer anderen Ausführung weist der Magnet im Bereich der konusförmigen Außenfläche ein härteres Material auf als das Material des Lautsprecherkorbs im Bereich der konusförmigen Innenfläche. Durch die Presspassung wird dabei das Material des Lautsprecherkorbs im Bereich der Presspassung verformt.According to another embodiment, the magnet in the region of the conical outer surface of a harder material than the material of the loudspeaker frame in the region of the conical inner surface. The press fit deforms the material of the loudspeaker frame in the area of the press fit.

Die zuvor beschriebenen Weiterbildungen sind sowohl einzeln als auch in Kombination besonders vorteilhaft. Dabei können sämtliche Weiterbildungen untereinander kombiniert werden. Einige mögliche Kombinationen sind in der Beschreibung der Ausführungsbeispiele der Figuren erläutert. Diese dort dargestellten Möglichkeiten von Kombinationen der Weiterbildungsvarianten sind jedoch nicht abschließend.The further developments described above are particularly advantageous both individually and in combination. All training can be combined with each other. Some possible combinations are explained in the description of the embodiments of the figures. These possibilities of However, combinations of the training variants are not exhaustive.

Im Folgenden wird die Erfindung durch Ausführungsbeispiele anhand zeichnerischer Darstellungen näher erläutert.In the following the invention will be explained in more detail by exemplary embodiments with reference to drawings.

Dabei zeigenShow

Fig. 1Fig. 1
eine dreidimensionale schematische Ansicht eines Bestandteils eines Lautsprecherkorbs,a three-dimensional schematic view of a component of a loudspeaker basket,
Fig. 2Fig. 2
eine schematische Schnittansicht eines Bestandteils eines Lautsprecherkorbs,a schematic sectional view of a component of a loudspeaker basket,
Fig. 3Fig. 3
eine schematische Schnittansicht eines Magneten, unda schematic sectional view of a magnet, and
Fig. 4Fig. 4
eine Detailvergrößerung einer schematischen Schnittansicht eines Magneten.an enlarged detail of a schematic sectional view of a magnet.

In Fig. 1 ist ein Bestandteil eines Lautsprecherkorbs 100 eines Lautsprechers in isometrischer Ansicht schematisch dargestellt. Der Lautsprecherkorb 100 weist eine konusförmige Innenfläche 110 auf. In der Ausführung der Fig. 1 sind angrenzend an die konusförmige Innenfläche 110 eine Anzahl Schnapphaken 101, 102 ausgebildet. In einer Ausführung der Fig. 1 sind die Schnapphaken 101, 102 rotationssymmetrisch angeordnet. Die Schnapphaken 101, 102 sind in der Ausführung der Fig. 1 angrenzend zur konusförmigen Innenfläche 110 über den gesamten Umfang angeordnet. Die Schnapphaken 101, 102 können aus einem elastischen Material, wie Kunststoff oder Metall herstellt sein. Die Schnapphaken 101, 102 sind in einer Ausführung der Fig. 1 aus demselben Material wie eine Wandung im Bereich der konusförmigen Innenfläche 110 des Lautsprecherkorbs 100 ausgebildet.In Fig. 1 is a part of a speaker basket 100 of a speaker in isometric view shown schematically. The loudspeaker basket 100 has a conical inner surface 110. In the execution of Fig. 1 adjacent to the cone-shaped inner surface 110, a number snap hooks 101, 102 are formed. In one embodiment of the Fig. 1 are the snap hooks 101, 102 arranged rotationally symmetrical. The snap hooks 101, 102 are in the execution of Fig. 1 arranged adjacent to the cone-shaped inner surface 110 over the entire circumference. The snap hooks 101, 102 may be made of an elastic material, such as plastic or metal. The snap hooks 101, 102 are in an embodiment of Fig. 1 made of the same material as a wall in the region of the conical inner surface 110 of the loudspeaker frame 100.

Das Material des Lautsprecherkorbs 100 ist beispielsweise Metall oder Kunststoff. In einer Ausführung der Fig. 1 sind die konusförmige Innenfläche 110 und die Schnapphaken 101, 102 des Lautsprecherkorbs 100 aus dem Kunststoff Polycarbonat mit 10% Glasfaser ausgebildet. Der in Fig. 1 gezeigte Bestandteil des Lautsprecherkorbs ist beispielsweise im Spritzgießverfahren hergestellt. Durch Material und Herstellungsverfahren weisen die Schnapphaken 101, 102 eine Elastizität für eine Schnappfunktion auf.The material of the speaker basket 100 is for example metal or plastic. In one embodiment of the Fig. 1 the conical inner surface 110 and the snap hooks 101, 102 of the loudspeaker basket 100 are formed of the plastic polycarbonate with 10% glass fiber. The in Fig. 1 shown part of the speaker basket is made for example by injection molding. By material and manufacturing process, the snap hooks 101, 102 have an elasticity for a snap function.

In Fig. 2 ist eine schematische Schnittansicht durch einen Bestandteil eines Lautsprecherkorbs 100 dargestellt. Eine konusförmige Innenfläche 110 des Lautsprecherkorbs 100 kann im Sinne eines Kegelstumpfs auch als Mantelfläche bezeichnet werden. Der Winkel α1 (halber Öffnungswinkel) zwischen Mantellinie und Kegelachse beträgt beispielsweise 4°. Der Winkel α2 zwischen einem Schnapphaken 101 und der Kegelachse beträgt beispielsweise 10°.In Fig. 2 a schematic sectional view through a part of a loudspeaker basket 100 is shown. A conical inner surface 110 of the loudspeaker frame 100 may also be referred to as a lateral surface in the sense of a truncated cone. The angle α 1 (half the opening angle) between the generatrix line and the cone axis is for example 4 °. The angle α 2 between a snap hook 101 and the cone axis is for example 10 °.

In Fig. 3 ist eine Ausführung eines Magneten 200 eines Lautsprechers in Schnittansicht schematisch dargestellt. Der Magnet 200 besteht dabei aus einem Material für einen Dauermagneten, beispielsweise aus Eisenmetallen und Seltenerdmetallen. In einer Ausführung der Fig. 3 ist der Magnet 200 rotationssymmetrisch ausgebildet. Der Magnet 200 weist eine konusförmige Außenfläche 210 auf. Die konusförmige Außenfläche 210 des Magneten 200 ist in der Ausführung der Fig. 3 durch Drehen hergestellt. Die konusförmige Außenfläche 210 des Magneten 200 kann im Sinne eines Kegelstumpfs auch als Mantelfläche bezeichnet werden. Der Winkel β1 (halber Öffnungswinkel) zwischen Mantellinie und Kegelachse beträgt beispielsweise 3°. Gemäß einer Ausführung ist der Winkel β1 (halber Öffnungswinkel) zwischen Mantellinie und Kegelachse des Magneten 200 kleiner als der Winkel α1 (halber Öffnungswinkel) zwischen Mantellinie und Kegelachse des Lautsprecherkorbs 100. Zwischen der Mantelfläche 210 und einem Hinterschnitt 230 erstreckt sich eine weitere Mantelfläche 220. Der Winkel β2 (halber Öffnungswinkel) zwischen Mantellinie des weiteren Mantelfläche 220 und Kegelachse ist größer als der Winkel β1.In Fig. 3 an embodiment of a magnet 200 of a loudspeaker in sectional view is shown schematically. The magnet 200 consists of a material for a permanent magnet, for example of ferrous metals and rare earth metals. In one embodiment of the Fig. 3 the magnet 200 is rotationally symmetrical. The magnet 200 has a cone-shaped outer surface 210. The conical outer surface 210 of the magnet 200 is in the embodiment of Fig. 3 made by turning. The conical outer surface 210 of the magnet 200 may also be referred to as a lateral surface in the sense of a truncated cone. The angle β 1 (half the opening angle) between the generatrix line and the cone axis is, for example, 3 °. According to one embodiment, the angle β 1 (half the opening angle) between the generatrix and cone axis of the magnet 200 is smaller than the angle α 1 (half the opening angle) between the generatrix and cone axis of the loudspeaker frame 100. Between the lateral surface 210 and an undercut 230 extends a further lateral surface 220. The angle β 2 (half the opening angle) between the generatrix of the further lateral surface 220 and the cone axis is greater than the angle β 1 .

Die konusförmige Außenfläche 220 des Magneten 200 und die konusförmige Innenfläche 110 des Lautsprecherkorbs 100 sind für eine konische Presspassung vorgesehen. Zur Befestigung des Lautsprecherkorbs 100 an dem Magneten 200 mittels der Presspassung wird der Lautsprecherkorb 100 mit seiner Öffnung über den Magneten 100 gestülpt von der Seite, die einer Schulter 250 des Magneten 200 gegenüberliegt.The cone-shaped outer surface 220 of the magnet 200 and the conical inner surface 110 of the loudspeaker frame 100 are provided for a conical interference fit. To attach the loudspeaker basket 100 to the magnet 200 by means of the press fit, the loudspeaker basket 100 is slipped with its opening over the magnet 100 from the side opposite to a shoulder 250 of the magnet 200.

Der Magnet 200 weist zumindest einen Hinterschnitt 230 auf. In einer Ausführung der Fig. 3 ist der Hinterschnitt 230 rotationssymmetrisch ausgebildet. Der Hinterschnitt 230 ist beispielsweise durch Drehen erzeugt. Der Hinterschnitt 230 ist den Schnapphaken 101, 102 des Lautsprecherkorbs 100 zugeordnet, wobei die Schnapphaken 101, 102 im montierten Zustand der Presspassung in den Hinterschnitt 230 eingreifen. Abweichend von der Ausführung der Fig. 3 weist der Magnet 200 eine Mehrzahl von Hinterschnitten auf, wodurch mehrere Einrastpositionen bewirkt werden. Abweichend von der Ausführung der Fig. 3 weist der Lautsprecherkorb 100 eine Mehrzahl von Schnapphaken 101, 102 mit abgestuften Längen auf, so dass ebenfalls mehrere Einrastpositionen bewirkt werden, wobei nicht alle Schnapphaken einrasten. Hierdurch können Toleranzen in der Fertigung des Magneten 200 und des Lautsprecherkorbs 100 ausgeglichen werden.The magnet 200 has at least one undercut 230. In one embodiment of the Fig. 3 the undercut 230 is rotationally symmetrical. The undercut 230 is generated, for example, by turning. The undercut 230 is associated with the snap hook 101, 102 of the loudspeaker basket 100, wherein the snap hooks 101, 102 engage in the undercut 230 in the mounted state of the press fit. Deviating from the execution of Fig. 3 the magnet 200 has a plurality of undercuts, thereby causing a plurality of latching positions. Deviating from the execution of Fig. 3 For example, the loudspeaker basket 100 has a plurality of snap hooks 101, 102 with stepped lengths, so that a plurality of latching positions are also effected, wherein not all snap hooks engage. As a result, tolerances in the production of the magnet 200 and the speaker basket 100 can be compensated.

Fig. 4 zeigt eine schematische Detailschnittansicht des mittels Presspassung 150 an dem Magneten 200 befestigten Lautsprecherkorbs 100. Eine Schulter 250 des Magneten bildet einen Anschlag für den Lautsprecherkorb 100. Zwischen der Schulter 250 und dem Lautsprecherkorb 100 kann optional zusätzlich ein Kleber 300 vorgesehen sein. Fig. 4 1 shows a schematic detail sectional view of the loudspeaker basket 100 fastened to the magnet 200 by means of press fit 150. A shoulder 250 of the magnet forms a stop for the loudspeaker basket 100. An adhesive 300 can optionally additionally be provided between the shoulder 250 and the loudspeaker basket 100.

Zur Bildung der Presspassung 150 ist die konusförmige Innenfläche 110 des Lautsprecherkorbs 100 aus Fig. 1 der konusförmigen Außenfläche 210 des Magneten 200 aus Fig. 3 zugewandt. Dabei besteht der Magnet 200 im Bereich der konusförmigen Außenfläche 210 aus einem härteren Material als eine Wandung 120 des Lautsprecherkorbs 100 im Bereich der konusförmige Innenfläche 110. In einer Ausführung der Fig. 4 wird der Kunststoff der Wandung 120 des Lautsprecherkorbs 100 in der Presspassung 150 verformt.To form the interference fit 150, the conical inner surface 110 of the loudspeaker frame 100 is made Fig. 1 the conical outer surface 210 of the magnet 200 from Fig. 3 facing. In this case, the magnet 200 in the region of the conical outer surface 210 of a harder material than a wall 120 of the loudspeaker frame 100 in the region of the conical inner surface 110. In one embodiment of Fig. 4 For example, the plastic of the wall 120 of the loudspeaker basket 100 is deformed in the press fit 150.

Zudem ist in Fig. 4 schematisch dargestellt, wie ein Schnapphaken 101 des Lautsprecherkorbs 100 in den Hinterschnitt 230 des Magneten 200 eingreift. Der Schnapphaken 101 ist dabei aus einem elastischen Material, wie beispielsweise Kunststoff gebildet. In einer Ausführung der Fig. 4 ist der Schnapphaken 101 zusammen mit der Wandung 120 des Lautsprecherkorbs 100 aus einem Kunststoffmaterial einstückig ausgeformt. Dabei ist eine Wanddicke des Schnapphakens 101 signifikant kleiner als die Wanddicke der Wandung 120. Ein unbeabsichtigtes Lösen der Befestigung zwischen Magneten 200 und Lautsprecherkorb 100 wird durch das Einschnappen des Schnapphakens 101 in den Hinterschnitt 230 wirksam gesichert. Zum gewollten Lösen müsste zunächst der Schnapphaken 101 aus dem Hinterschnitt 230 gebracht werden.Moreover, in Fig. 4 schematically illustrated how a snap hook 101 of the speaker basket 100 engages in the undercut 230 of the magnet 200. The snap hook 101 is formed from an elastic material, such as plastic. In one embodiment of the Fig. 4 the snap hook 101 is formed integrally with the wall 120 of the speaker basket 100 of a plastic material. In this case, a wall thickness of the snap hook 101 is significantly smaller than the wall thickness of the wall 120. Inadvertent release of the attachment between magnet 200 and loudspeaker basket 100 is effectively secured by snapping the snap hook 101 into the undercut 230. For the desired release, the snap hook 101 would first have to be brought out of the undercut 230.

Die Erfindung ist nicht auf die dargestellten Ausgestaltungsvarianten der Figuren 1 bis 4 beschränkt. Beispielsweise ist es möglich, einen Schnapphaken aus einem anderen Material auszubilden. Ebenfalls ist es möglich, den Schnapphaken des Lautsprecherkorbs und den Hinterschnitt des Magneten an einer anderen Stelle auszubilden. Die Funktionalität des der Befestigung mittel Presspassung gemäß Fig. 4 kann besonders vorteilhaft für einen Mittenlautsprecher verwendet werden.The invention is not limited to the illustrated embodiments of the FIGS. 1 to 4 limited. For example, it is possible to form a snap hook made of a different material. It is also possible to form the snap hook of the speaker basket and the undercut of the magnet at another location. The functionality of the fastening medium press fit according to Fig. 4 can be used particularly advantageously for a center speaker.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

100100
LautsprecherkorbLoudspeaker frame
101, 102101, 102
Schnappelement, SchnapphakenSnap element, snap hook
110110
konusförmige Innenfläche, Mantelflächecone-shaped inner surface, lateral surface
120120
Schultershoulder
150150
konische Presspassungconical interference fit
200200
Magnet, DauermagnetMagnet, permanent magnet
210, 220210, 220
konusförmige Außenfläche, Mantelflächecone-shaped outer surface, lateral surface
230230
Hinterschnittundercut
250250
Schultershoulder
300300
KleberGlue
α1, α2, β1, β2 α 1 , α 2 , β 1 , β 2
Winkelangle

Claims (8)

  1. A loudspeaker comprising
    - a loudspeaker basket (100) and
    - a magnet (200),
    - wherein the loudspeaker basket (100) is attached to the magnet (200),
    wherein
    - the magnet (200) has a conical external surface (210),
    - the loudspeaker basket (100) has a conical internal surface (110) formed to form a press fit (150) with the conical exterior surface (210) of the magnet (200),
    characterized in that
    - the magnet (200) has an undercut (230), and that
    - the loudspeaker basket (100) has a number of snap-in hooks (101, 102), wherein when in press fit (150), at least one snap-in hook (101, 102) engages with the undercut (230).
  2. The loudspeaker according to claim 1,
    characterized in that
    a wall with the conical internal surface (110) and the snap-in hook (101, 102) of the loudspeaker basket (100) are integrally formed.
  3. The loudspeaker according to claim 2,
    characterized in that
    a wall thickness of the loudspeaker basket (100) in the area of the conical internal surface (110) is larger than a wall thickness of the snap-in hook (101, 102).
  4. The loudspeaker according to any one of the preceding claims,
    characterized in that
    the conical internal surface (110) and the snap-in hook (101, 102) of the loudspeaker basket (100) are formed of a plastic material, in particular polycarbonate including 10% glass fiber.
  5. The loudspeaker according to any one of the preceding claims,
    characterized in that
    the snap-in hook (101, 102) is formed adjacent to the conical internal surface (110) of the loudspeaker basket (100).
  6. The loudspeaker according to any one of the preceding claims,
    characterized in that
    the conical external surface (210) of the magnet (200) is produced by turning.
  7. The loudspeaker according to any one of the preceding claims,
    characterized in that
    the conical internal surface (110) of the loudspeaker basket (100) is produced by injection molding.
  8. The loudspeaker according to any one of the preceding claims,
    characterized in that
    the magnet (200) in the area of the conical external surface (210) has a harder material than the loudspeaker basket (100) in the area of the conical internal surface (110).
EP15706384.3A 2014-02-19 2015-02-05 Loudspeaker Active EP3108666B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201420001433 DE202014001433U1 (en) 2014-02-19 2014-02-19 speaker
PCT/EP2015/052454 WO2015124437A1 (en) 2014-02-19 2015-02-05 Loudspeaker

Publications (2)

Publication Number Publication Date
EP3108666A1 EP3108666A1 (en) 2016-12-28
EP3108666B1 true EP3108666B1 (en) 2018-01-24

Family

ID=52589341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15706384.3A Active EP3108666B1 (en) 2014-02-19 2015-02-05 Loudspeaker

Country Status (5)

Country Link
US (1) US10015611B2 (en)
EP (1) EP3108666B1 (en)
CN (1) CN106416287B (en)
DE (1) DE202014001433U1 (en)
WO (1) WO2015124437A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115209332B (en) * 2022-07-08 2023-03-10 汕头市雅威机电实业有限公司 High-air-coupling-degree loudspeaker cotton sliver adsorption curling and laminating equipment and laminating method thereof

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH265675A (en) * 1946-10-21 1949-12-15 Ericsson Telefon Ab L M Electrodynamic arrangement for converting sound vibrations into electrical vibrations or vice versa.
FR1375202A (en) * 1963-09-02 1964-10-16 Radiotechnique Attachment of stacked parts, especially parts of a loudspeaker
GB1219918A (en) 1968-08-08 1971-01-20 Standard Telephones Cables Ltd Improvements in and relating to moving coil transducers
DE1950188B2 (en) 1969-10-04 1972-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg DEVICE FOR FASTENING A SPEAKER
US4281224A (en) * 1980-04-21 1981-07-28 Sparkomatic Corporation Grille covered speaker assembly construction for compact automobiles and the like
DE8016205U1 (en) 1980-06-19 1980-09-25 Thyssen Edelstahlwerke Ag, 4000 Duesseldorf TOP PANEL FOR SPEAKER MAGNET
DE4031742A1 (en) * 1990-10-06 1992-04-09 Nokia Unterhaltungselektronik CALOTH HIGH TONE SPEAKER
US5319337A (en) * 1991-04-05 1994-06-07 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Composite molding of resin-bonded magnet for machine parts and process for producing the same
DE9113037U1 (en) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim Cone speaker
US5431367A (en) * 1992-08-28 1995-07-11 General Electric Company Multilayer injection molds having improved surface properties
JP4106858B2 (en) * 2000-06-26 2008-06-25 松下電器産業株式会社 Speaker unit
JP2002247689A (en) * 2001-02-16 2002-08-30 Citizen Electronics Co Ltd Loudspeaker
JP4600037B2 (en) * 2004-12-27 2010-12-15 パナソニック株式会社 Speaker
JP2006261962A (en) * 2005-03-16 2006-09-28 Pioneer Electronic Corp Speaker
WO2010013338A1 (en) * 2008-07-31 2010-02-04 パイオニア株式会社 Speaker apparatus and automobile

Also Published As

Publication number Publication date
DE202014001433U1 (en) 2015-02-20
US10015611B2 (en) 2018-07-03
WO2015124437A1 (en) 2015-08-27
EP3108666A1 (en) 2016-12-28
CN106416287B (en) 2019-11-05
CN106416287A (en) 2017-02-15
US20170055094A1 (en) 2017-02-23

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