EP0690658B1 - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- EP0690658B1 EP0690658B1 EP95107547A EP95107547A EP0690658B1 EP 0690658 B1 EP0690658 B1 EP 0690658B1 EP 95107547 A EP95107547 A EP 95107547A EP 95107547 A EP95107547 A EP 95107547A EP 0690658 B1 EP0690658 B1 EP 0690658B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- loudspeaker
- voice coil
- rod
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Definitions
- the invention is concerned with a centering arrangement for speakers.
- a centering membrane for a speaker generally designed so that a disk-shaped and in its side view corrugated cuff with one edge of the Speaker basket and the other edge with the Voice coil former or the loudspeaker membrane connected is.
- Such cuffs are usually made of natural fiber or plastic and also have impregnation for example made of synthetic resin.
- the connection of the Edge areas of the cuff to the usual components of the speaker is mostly an adhesive connection executed.
- a rod is arranged centrally on the loudspeaker axis on the pole core of the magnet system.
- a sleeve is pushed onto this rod, which surrounds the outer casing of the rod at a small distance and which can slide on the rod in the longitudinal direction to the loudspeaker axis.
- the outer jacket of the sleeve is connected to the voice coil former.
- a spring is clamped, which in the rest position of the system arranges the voice coil connected to the voice coil support in the plane of the pole plate.
- the distance between the inner jacket of the sleeve and the outer jacket of the rod must be small.
- This spatial proximity of the two parts can, however, result in the respective lateral surfaces of the sleeve and rod coming into contact during lifting movements of the voice coil bobbin.
- Such touches affect the free travel of the voice coil former and lead to distortions in the sound reproduction of the loudspeaker.
- dirt particles settle in the gap between the rod and the sleeve, since these particles also increase the friction between the sleeve and the rod.
- the respective and grouped magnetic rings are arranged in a sleeve. Any of these Sleeves are also radially magnetized by three Magnetic rings formed, but here only in the outer magnetic rings same poles in the same Show direction. The each other immediately opposite magnetic rings, however, have the same Polarity on.
- the invention has for its object a cuff-free centering for speakers indicate the contact between the rod and Sleeve is excluded.
- Magnetic material are the areas that are made up Magnetic material are formed radially Speaker axis magnetized and have the radial magnetized and facing each other arranged magnetic areas of the sleeve and rod same poles on, the distance between the inner jacket the sleeve and outer jacket of the rod enlarged be formed without the centering effect get lost. Rather, this is through the mutual repulsion of the opposing Pole of sleeve and rod ensured.
- the centering arrangement is then particularly simple formable if the sleeve is made of a magnetizable Annulus and the rod from a magnetizable Rod piece is formed. This is because in in this case on independent training from Rod and sleeve by connecting magnetic segments can be dispensed with a carrier material.
- the sleeve can also be used to connect Voice coil former and loudspeaker membrane with be used.
- Voice coil former and Speaker membrane on the inside of the Voice coil holder the sleeve attached and around Outer jacket of the speaker membrane in the Connection area arranged a clamping ring, which the areas of voice coil former and Speaker membrane presses against the sleeve, then can on an adhesive connection of the parts just mentioned either entirely or at least partially waived will.
- this press connection of voice coil former and Speaker membrane can also be used independently can.
- the clamping ring Loudspeaker membrane against the voice coil former press Is the wall thickness of the Voice coil former for such a press connection low, can be on the inner jacket of the voice coil former a reinforcing ring can also be formed without this reinforcement ring any Centering properties.
- Figure 1 shows a section through a loudspeaker in the neckline.
- the loudspeaker diaphragm 10 is connected to the upper end of the Voice coil holder 11 connected.
- the lower end of the Voice coil former 11 is with the voice coil 12 Mistake.
- the voice coil 12 is in the plane the pole plate 13 is arranged.
- On the pole core 14 is a rod 17 is centered on the loudspeaker axis 16 put on and connected.
- the outer jacket 18 of the rod 17 is in the longitudinal direction of the loudspeaker axis 16 at least partially surrounded by the sleeve 19.
- the Distance between the outer jacket 18 of the rod 17 and the inner jacket 20 of the sleeve 19 is for both shown pages the same size. Like these Distance ratios are set in In connection with Figure 2 explained in more detail.
- Both between the pole core 14 and the lower edge 21.2 of the sleeve 19 and between the upper edge 21.1 of the sleeve 19 and one with the upper end of the Rod 17 connected plate 22 is one Spring 23 clamped. Since also the Outer jacket 24 of the sleeve 19 with the inner jacket 24 'of Voice coil holder 11 is connected, cause the Springs 23 that in the rest position of the system Voice coil 12 in the plane of the pole plate 13 is arranged. The latter position between Pole plate 13 and voice coil 12 can be in another - Not shown - embodiment without the use of springs 23 can be realized when the Loudspeaker diaphragm 10 and the bead (not shown) even by their rigidity in are able to voice coil 12 in the above Able to hold the pole plate.
- Figure 2 shows below the horizontal Center line a rod-sleeve arrangement according to the figure 1.
- the sleeve 19 shown in this illustration as well the rod 17 are made entirely of magnetic material formed, the direction of magnetization both parts 17, 19 radially to the loudspeaker axis 16 runs.
- the mutually facing lateral surfaces of Sleeve 19 and rod 17 have the same polarity (here N / N). This causes the sleeve 19 in each Operating condition placed centrally to rod 17 remains.
- Non-centric arrangements of the sleeve 19 for Rod 17 or to the loudspeaker axis 16, approximately during of the stroke are due to the mutual repulsion of the rectified and arranged opposite each other Pole (N / N) of sleeve 19 and rod 17 immediately compensated.
- the upper part of Figure 2 differs from that lower part according to Figure 2 only in that the sleeve 19 and the rod 17 not completely out Magnetic material are formed. Rather, the sleeve 19 and the rod 17 formed by magnet segments 25, each using a non-magnetic Carrier material 26 are interconnected.
- the drawn poles illustrate that the Segments 25 radial with respect to the loudspeaker axis 16 are magnetized and that the north poles (N / N) of the Segments 25 of sleeve 19 and rod 17 each other are facing.
- training causes the centering of the sleeve 19 to pole 17, albeit the independent one Formation of magnetic segments 25 in one Carrier material 26 must be regarded as expensive.
- the representation according to FIG. 3 differs from the representation of Figure 1 only in that the Connection area of sleeve 19, voice coil former 11 and loudspeaker diaphragm 10 from a clamping ring 27 is surrounded.
- This clamping ring 27 is around the outer jacket 28 of the neck 29 of the speaker diaphragm 10 is arranged.
- This clamping ring 27 has a smaller one Coefficient of thermal expansion than the sleeve 19, so that with increasing operating temperature of the clamping ring 27 den Voice coil former 11 and the neck 29 of the Loudspeaker diaphragm 10 presses against the sleeve 19.
- an epoxy glue glued. Is the operating temperature of the system reached and the clamping ring 27 in its pressing action active, the epoxy adhesive has no function. The Only then does the epoxy become adhesive again a when the system is below the temperature Operating temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Liquid Crystal (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Die Erfindung befaßt sich mit einer Zentrieranordnung für Lautsprecher.The invention is concerned with a centering arrangement for speakers.
Gemäß dem Stand der Technik wird eine Zentriermembrane für einen Lautsprecher allgemein so ausgebildet, daß eine scheibenförmige und in ihrer Seitenansicht gewellte Manschette mit der einen Randseite dem Lautsprecherkorb und der anderen Randseite mit dem Schwingspulenträger oder der Lautsprechermembran verbunden ist. Derartige Manschetten sind üblicherweise aus Naturfaser oder Kunststoff gebildet und weisen zusätzlich eine Imprägnierung beispielsweise aus Kunstharz auf. Die Verbindung der Randbereiche der Manschette zu den üblichen Bauteilen des Lautsprechers ist zumeist als Klebeverbindung ausgeführt.According to the prior art, a centering membrane for a speaker generally designed so that a disk-shaped and in its side view corrugated cuff with one edge of the Speaker basket and the other edge with the Voice coil former or the loudspeaker membrane connected is. Such cuffs are usually made of natural fiber or plastic and also have impregnation for example made of synthetic resin. The connection of the Edge areas of the cuff to the usual components of the speaker is mostly an adhesive connection executed.
Wenngleich derartige Anordnungen bis etwa 100 Grad Celsius problemlos eingesetzt werden können, zeigen sich jedoch erhebliche Probleme, wenn derartige Lautsprecher oberhalb des eben genannten Temperaturbereiches eingesetzt werden sollen, da in diesem Temperaturbereich die Klebeverbindungen und/oder die Imprägnierungen nicht mehr stabil sind.Although such arrangements are up to about 100 degrees Celsius can be used without any problems however, significant problems arise when such Speakers above the above Temperature range should be used, because in the adhesive bonds in this temperature range and / or the impregnations are no longer stable.
Aus der Schrift DE-A-42 41 212, welche gleichzeitig den Ausgangspunkt für die vorliegende Anmeldung bildet, ist eine Zentrieranordnung für Lautsprecher bekannt, welche den Einsatz von manschettenförmigen Zentriermembranen überflüssig macht und auch bei sehr hohen Betriebstemperaturen stabil bleibt.From the document DE-A-42 41 212, which simultaneously the The starting point for the present application is a centering arrangement for loudspeakers is known, which the use of cuff-shaped Centering diaphragms make it superfluous and even with very remains stable at high operating temperatures.
Dazu ist zentrisch zur Lautsprecherachse auf dem
Polkern des Magnetsystems eine Stange angeordnet. Auf
diese Stange ist eine Hülse aufgeschoben, welche den
Außenmantel der Stange mit geringem Abstand umgibt und
welche in Längsrichtung zur Lautsprecherachse auf der
Stange gleiten kann. Der Außenmantel der Hülse ist mit
dem Schwingspulenträger verbunden. Zwischen dem
unteren Rand der Hülse und dem Polkern sowie zwischen
dem oberen Rand der Hülse und einem mit dem oberen
Ende der Stange verbundenen Teller ist je eine Feder
eingespannt, welche in Ruhestellung des Systems die mit
dem Schwingspulenträger verbundene Schwingspule in der
Ebene der Polplatte anordnet.
Damit der Stangen-Hülsen-Konstruktion eine gute
Zentrierwirkung zukommt, muß der Abstand zwischen dem
Innenmantel der Hülse und dem Außenmantel der Stange
gering ausgebildet sein. Diese räumliche Nähe beider
Teile kann aber dazu führen, daß bei Hubbewegungen des
Schwingspulenträgers die jeweiligen Mantelflächen von
Hülse und Stange in Berührung kommen. Derartige
Berührungen beeinträchtigen den freien Hub des
Schwingspulenträgers und führen zu Verzerrungen
der Klangwiedergabe des Lautsprechers. In diesem
Zusammenhang ist es besonders nachteilig, wenn sich im
Spalt zwischen Stange und Hülse Schmutzpartikel
absetzen, da diese Partikel ebenfalls die Reibung
zwischen Hülse und Stange erhöhen.For this purpose, a rod is arranged centrally on the loudspeaker axis on the pole core of the magnet system. A sleeve is pushed onto this rod, which surrounds the outer casing of the rod at a small distance and which can slide on the rod in the longitudinal direction to the loudspeaker axis. The outer jacket of the sleeve is connected to the voice coil former. Between the lower edge of the sleeve and the pole core and between the upper edge of the sleeve and a plate connected to the upper end of the rod, a spring is clamped, which in the rest position of the system arranges the voice coil connected to the voice coil support in the plane of the pole plate.
So that the rod-sleeve construction has a good centering effect, the distance between the inner jacket of the sleeve and the outer jacket of the rod must be small. This spatial proximity of the two parts can, however, result in the respective lateral surfaces of the sleeve and rod coming into contact during lifting movements of the voice coil bobbin. Such touches affect the free travel of the voice coil former and lead to distortions in the sound reproduction of the loudspeaker. In this context, it is particularly disadvantageous if dirt particles settle in the gap between the rod and the sleeve, since these particles also increase the friction between the sleeve and the rod.
Aus US 3.614.181 ist für sich eine Magnetlageranordnung zur Lagerung von Drehwellen bekannt, welche sowohl eine axiale als auch eine radiale Bewegung der Drehwelle ausschließt. Dazu sind eine Reihe von axial und radial magnetisierten Magneten vorhanden. Die jeweiligen Enden der Drehwelle sind mit axial magnetisierten Magnetzapfen versehen, welche in ebenfalls axial magnetisierte Hülsen eingreifen, wobei das jeweilige Ende eines jeden Magnetzapfens, mit welchem diese in die Hülsen eingreifen, die gleiche Polung aufweisen wie das diesen Magnetzapfen zugewandte Ende der Hülse. Ferner sind am Umfang der Drehwelle eine Mehrzahl von radial magnetisierten Magnetringen angeordnet. Jeweils drei dieser Magnetringe sind zu einer Gruppe zusammengefaßt, wobei nur bei den äußeren Magnetringen gleiche Pole in die gleiche Richtung weisen. Die jeweiligen und zu Gruppen zusammengefaßten Magnetringe sind in jeweils einer Hülse angeordnet. Jede dieser Hülsen wird ebenfalls von drei radial magnetisierten Magnetringen gebildet, wobei auch hier nur bei den äußeren Magnetringen gleiche Pole in die gleiche Richtung weisen. Die jeweils einander unmittelbar gegenüberliegenden Magnetringe weisen jedoch gleiche Polung auf.From US 3,614,181 is a magnetic bearing arrangement in itself known for the storage of rotary shafts, which both a axial as well as radial movement of the rotating shaft excludes. There are a number of axial and radial magnetized magnets available. The respective ends the rotating shaft are axially magnetized Magnetic spigot provided, which is also axial intervene magnetized sleeves, the respective End of each magnetic cone with which this engage the sleeves with the same polarity as the end of the sleeve facing this magnetic pin. Furthermore, a plurality of are on the circumference of the rotary shaft arranged radially magnetized magnetic rings. Each three of these magnetic rings are in a group summarized, only with the outer magnetic rings same poles point in the same direction. The respective and grouped magnetic rings are arranged in a sleeve. Any of these Sleeves are also radially magnetized by three Magnetic rings formed, but here only in the outer magnetic rings same poles in the same Show direction. The each other immediately opposite magnetic rings, however, have the same Polarity on.
Der Erfindung liegt die Aufgabe zugrunde, eine manschettenfreie Zentrierung für Lautsprecher anzugeben, bei welcher eine Berührung von Stange und Hülse ausgeschlossen ist. The invention has for its object a cuff-free centering for speakers indicate the contact between the rod and Sleeve is excluded.
Diese Aufgabe wird durch die in Anspruch 1 angegebenen
Merkmale gelöst. Vorteilhafte Aus- und Weiterbildungen
der Erfindung sind den Ansprüchen 2 bis 4 entnehmbar.This object is achieved by the specified in claim 1
Features resolved. Advantageous training and further education
the invention can be found in
Sind die Stange und die Hülse zumindest teilweise aus Magnetmaterial gebildet, sind die Bereiche, welche aus Magnetmaterial gebildet sind, radial zur Lautsprecherachse magnetisiert und weisen die radial magnetisierten und aneinander gegenüberliegend angeordneten Magnetbereiche von Hülse und Stange gleiche Pole auf, kann der Abstand zwischen Innenmantel der Hülse und Außenmantel der Stange vergrößert ausgebildet werden, ohne daß die Zentrierwirkung verloren geht. Vielmehr wird diese durch die gegenseitige Abstoßung der einander gegenüberliegenden Pole von Hülse und Stange sichergestellt.Are the rod and the sleeve at least partially out Magnetic material are the areas that are made up Magnetic material are formed radially Speaker axis magnetized and have the radial magnetized and facing each other arranged magnetic areas of the sleeve and rod same poles on, the distance between the inner jacket the sleeve and outer jacket of the rod enlarged be formed without the centering effect get lost. Rather, this is through the mutual repulsion of the opposing Pole of sleeve and rod ensured.
Besonders einfach ist die Zentrieranordnung dann ausbildbar, wenn die Hülse aus einem magnetisierbaren Kreisring und die Stange aus einem magnetisierbaren Stangenstück gebildet wird. Dies deshalb, weil in diesem Fall auf eine eigenständige Ausbildung von Stange und Hülse durch Verbinden von Magnetsegmenten mit einem Trägermaterial verzichtet werden kann.The centering arrangement is then particularly simple formable if the sleeve is made of a magnetizable Annulus and the rod from a magnetizable Rod piece is formed. This is because in in this case on independent training from Rod and sleeve by connecting magnetic segments can be dispensed with a carrier material.
Auch kann die Hülse zur Verbindung von Schwingspulenträger und Lautsprechermembran mit herangezogen werden. Ist beispielsweise im Verbindungsbereich von Schwingspulenträger und Lautsprechermembran an der Innenseite des Schwingspulenträgers die Hülse angesetzt und um den Außenmantel der Lautsprechermembran im Verbindungsbereich ein Klemmring angeordnet, welcher die Bereiche von Schwingspulenträger und Lautsprechermembran gegen die Hülse preßt, dann kann auf eine Klebeverbindung der eben genannten Teile entweder ganz oder zumindest teilweise verzichtet werden.The sleeve can also be used to connect Voice coil former and loudspeaker membrane with be used. For example, in Connection area of voice coil former and Speaker membrane on the inside of the Voice coil holder the sleeve attached and around Outer jacket of the speaker membrane in the Connection area arranged a clamping ring, which the areas of voice coil former and Speaker membrane presses against the sleeve, then can on an adhesive connection of the parts just mentioned either entirely or at least partially waived will.
Schon an dieser Stelle sei darauf hingewiesen, daß diese Preßverbindung von Schwingspulenträger und Lautsprechermembran auch eigenständig genutzt werden kann. So kann beispielsweise der Klemmring die Lautsprechermembran gegen den Schwingspulenträger pressen. Ist dabei die Wandstärke des Schwingspulenträgers für eine solche Preßverbindung zu gering, kann am Innenmantel des Schwingspulenträgers auch ein Verstärkungsring ausgebildet sein, ohne daß diesem Verstärkungsring irgendwelche Zentriereigenschaften zukommen.At this point it should be pointed out that this press connection of voice coil former and Speaker membrane can also be used independently can. For example, the clamping ring Loudspeaker membrane against the voice coil former press. Is the wall thickness of the Voice coil former for such a press connection low, can be on the inner jacket of the voice coil former a reinforcing ring can also be formed without this reinforcement ring any Centering properties.
Besonders einfach ist die Herstellung der Preßsitzverbindung dann, wenn der Klemmring einen geringeren Wärmeausdehnungskoeffizienten als die Hülse oder der Verstärkungsring hat. In diesem Fall wird mit steigender Temperatur des Systems die Preßwirkung des Klemmrings auf die Hülse oder den Verstärkungsring verstärkt, so daß die dazwischen liegenden Teile mit größerer Kraft gegeneinander gedrückt werden. Sofern die Preßkraft des Klemmrings auf die Hülse oder den Verstärkungsring unterhalb der Betriebstemperatur des Systems zu gering sein sollte, können der Schwingspulenträger und die Lautsprechermembran sowie die Hülse bzw. der Verstärkungsring als auch der Klemmring mit Klebstoff verbunden sein. In diesem Fall kommt dem Klebstoff nur die Aufgabe zu, die Verbindung unterhalb der Betriebstemperatur des Systems sicherzustellen. Mit ansteigender Temperatur wird dann die Verbindung von dem Klemmring und der Hülse bzw. dem Verstärkungsring übernommen. Wird das System abgeschaltet, übernimmt dann wieder der Klebstoff die Verbindungsfunktion zwischen den eben benannten Teilen.The production of the Press fit connection when the clamping ring lower coefficient of thermal expansion than the sleeve or has the reinforcement ring. In this case, with rising temperature of the system the pressing effect of the Clamping ring on the sleeve or the reinforcement ring reinforced so that the parts in between with greater force are pressed against each other. Provided the pressing force of the clamping ring on the sleeve or Reinforcement ring below the operating temperature of the System should be too low, the Voice coil former and the loudspeaker membrane as well the sleeve or the reinforcement ring as well as the Clamping ring to be connected with adhesive. In this case the only task for the adhesive is the connection below the operating temperature of the system ensure. Then with increasing temperature the connection of the clamping ring and the sleeve or the Reinforcement ring taken over. Will the system switched off, the adhesive takes over again Connection function between the parts just named.
Es zeigen:
- Figur 1
- einen auszugsweisen Schnitt durch einen Lautsprecher;
Figur 2- einen Schnitt entlang der Linie AA gemäß Figur 1; und
- Figur 3
- eine weitere Darstellung gemäß Figur 1.
- Figure 1
- a partial section through a speaker;
- Figure 2
- a section along the line AA of Figure 1; and
- Figure 3
- another representation according to FIG. 1.
Figur 1 zeigt einen Schnitt durch einen Lautsprecher im Ausschnitt.Figure 1 shows a section through a loudspeaker in the neckline.
Die Lautsprechermembran 10 ist mit dem oberen Ende des
Schwingspulenträgers 11 verbunden. Das untere Ende des
Schwingspulenträgers 11 ist mit der Schwingspule 12
versehen. Zwischen der Polplatte 13 und dem Polkern 14
ist der Luftspalt 15 des Systems gebildet. Da die
Darstellung gemäß Figur 1 die Ruhestellung des Systems
veranschaulicht, ist die Schwingspule 12 in der Ebene
der Polplatte 13 angeordnet. Auf dem Polkern 14 ist
zentrisch zur Lautsprecherachse 16 eine Stange 17
aufgesetzt und verbunden. Der Außenmantel 18 der Stange
17 ist in Längsrichtung zur Lautsprecherachse 16
zumindest teilweise von der Hülse 19 umgeben. Der
Abstand zwischen dem Außenmantel 18 der Stange 17 und
dem Innenmantel 20 der Hülse 19 ist für beide
gezeigten Seiten gleich groß. Wie diese
Abstandsverhältnisse eingestellt werden, wird im
Zusammenhang mit Figur 2 noch näher erläutert.The
Sowohl zwischen dem Polkern 14 und dem unterem Rand
21.2 der Hülse 19 als auch zwischen dem oberen Rand
21.1 der Hülse 19 und einem mit dem oberen Ende der
Stange 17 verbundenen Teller 22 ist je eine
Feder 23 eingespannt. Da außerdem der
Außenmantel 24 der Hülse 19 mit dem Innenmantel 24' des
Schwingspulenträgers 11 verbunden ist, bewirken die
Federn 23, daß in Ruhestellung des Systems die
Schwingspule 12 in der Ebene der Polplatte 13
angeordnet ist. Die letztbenannte Stellung zwischen
Polplatte 13 und Schwingspule 12 kann in einem anderen
- nicht dargestellten - Ausführungsbeispiel auch ohne
die Verwendung von Federn 23 realisiert sein, wenn die
Lautsprechermembran 10 und die Sicke (nicht
dargestellt) schon selbst durch ihre Steifigkeit in
der Lage sind, die Schwingspule 12 in der genannten
Lage zur Polplatte zu halten.Both between the
Auch wenn die Kontaktierung der Schwingspule 12 nicht
Gegenstand der vorliegenden Anmeldung ist, sei jedoch
auf die DE-A-42 41 212 hingewiesen, welche die
Kontaktierung der Schwingspule 12 unter Nutzung der
Federn 23 näher erläutert. Even if the contacting of the
Figur 2 zeigt unterhalb der waagrecht verlaufenden
Mittellinie eine Stangen-Hülsen-Anordnung gemäß Figur
1. Die in dieser Darstellung gezeigte Hülse 19 sowie
die Stange 17 sind vollständig aus Magnetmaterial
gebildet, wobei die Magnetisierungsrichtung
beider Teile 17, 19 radial zur Lautsprecherachse 16
verläuft. Die aneinander zugewandten Mantelflächen von
Hülse 19 und Stange 17 haben gleiche Polung (hier
N/N). Dies bewirkt, daß die Hülse 19 in jedem
Betriebszustand zentrisch zur Stange 17 plaziert
bleibt. Nichtzentrische Anordnungen der Hülse 19 zur
Stange 17 bzw. zur Lautsprecherachse 16, etwa während
des Hubs werden durch die gegenseitigen Abstoßung der
gleichgerichteten und einander gegenüber angeordneten
Pole (N/N) von Hülse 19 und Stange 17 sofort
kompensiert.Figure 2 shows below the horizontal
Center line a rod-sleeve arrangement according to the figure
1. The
Der obere Teil von Figur 2 unterscheidet sich von dem
unteren Teil gemäß Figur 2 nur dadurch, daß die Hülse
19 und die Stange 17 nicht vollständig aus
Magnetmaterial gebildet sind. Vielmehr wird die Hülse
19 und die Stange 17 von Magnetsegmenten 25 gebildet,
die jeweils mittels eines nichtmagnetischen
Trägermaterials 26 miteinander verbunden sind. Durch
die eingezeichneten Pole wird veranschaulicht, daß die
Segmente 25 im Bezug zur Lautsprecherachse 16 radial
magnetisiert sind und daß die Nordpole (N/N) der
Segmente 25 von Hülse 19 und Stange 17 einander
zugewandt sind. Auch die im oberen Teil von Figur 2
gezeigte Ausbildung bewirkt die Zentrierung der Hülse
19 zur Stange 17, wenngleich die eigenständige
Ausbildung von Magnetsegmenten 25 in einem
Trägermaterial 26 als aufwendig angesehen werden muß.The upper part of Figure 2 differs from that
lower part according to Figure 2 only in that the
Die Darstellung gemäß Figur 3 unterscheidet sich von
der Darstellung gemäß Figur 1 nur dadurch, daß der
Verbindungsbereich von Hülse 19, Schwingspulenträger 11
und Lautsprechermembran 10 von einem Klemmring 27
umgeben ist. Dieser Klemmring 27 ist um den Außenmantel
28 des Halses 29 der Lautsprechermembran 10 angeordnet.
Dieser Klemmring 27 hat einen geringeren
Wärmeausdehnungskoeffizienten als die Hülse 19, so daß
mit steigender Betriebstemperatur der Klemmring 27 den
Schwingspulenträger 11 und den Hals 29 der
Lautsprechermembran 10 gegen die Hülse 19 preßt. Damit
die Teile 10, 11, 19 und 27 auch vor Erreichen der
Betriebstemperatur fest miteinander verbunden sind,
sind diese Teile mit einem Epoxy-Kleber miteinander
verklebt. Ist die Betriebstemperatur des Systems
erreicht und der Klemmring 27 in seiner Preßwirkung
aktiv, hat der Epoxy-Kleber keine Funktion mehr. Die
Klebewirkung des Epoxy-Klebers tritt erst dann wieder
ein, wenn das System eine Temperatur unterhalb der
Betriebstemperatur einnimmt.The representation according to FIG. 3 differs from
the representation of Figure 1 only in that the
Connection area of
Auf den Einsatz eines Klebstoffs kann gänzlich
verzichtet werden, wenn der Klemmring 27 auf den Hals
29 der Lautsprechermembran 10 aufgeschrumpft ist. In
diesem Fall ist schon bei Raumtemperatur eine
Pressverbindung realisiert.The use of an adhesive can be done entirely
be dispensed with if the clamping
Claims (4)
- A loudspeaker comprising a loudspeaker diaphragm (10), a voice coil carrier (11) connected to the loudspeaker diaphragm (10), and a centring arrangement which comprises a rod (17) on which a sleeve (19), connected to the loudspeaker diaphragm (10) or the voice coil carrier (11), is arranged so as to be displaceable along the loudspeaker axis (16) against the action of a spring arrangement (23),
characterised in that
the rod (17) and the sleeve (19) are formed entirely from magnetic material or each comprise at least two segments (25) made of magnetic material, which segments are in each case disposed radially opposite one another relative to the loudspeaker axis (16) and each segment (25) of the rod (17) is opposed by a segment of the sleeve (19), the magnetic material is magnetized radially to the loudspeaker axis (16) and in each case mutually facing zones, formed from magnetic material, of sleeve (19) and rod (17) have the same polarity. - A loudspeaker according to Claim 1,
characterised in that
the sleeve (19) is applied to the inner casing (24') of the voice coil carrier (11) in the connection zone between voice coil carrier (11) and loudspeaker diaphragm (10, 29) and the outer casing (28) of the loudspeaker diaphragm (10, 29) is surrounded by a clamping ring (27) in the connection zone of voice coil carrier (11) and loudspeaker diaphragm (10, 29). - A loudspeaker according to Claim 2,
characterised in that
the clamping ring (27) has a lower thermal expansion coefficient at least compared to the sleeve (19). - A loudspeaker according to Claim 2 or Claim 3,
characterised in that
the sleeve (19), the voice coil carrier (11), the loudspeaker diaphragm (10, 29) and the clamping ring (27) are adhesively connected to one another and the nature of the adhesive is such that it ensures the connection between these parts (19, 10, 11, 27) below the operating temperature of the system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4419312A DE4419312A1 (en) | 1994-06-01 | 1994-06-01 | speaker |
| DE4419312 | 1994-06-01 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0690658A2 EP0690658A2 (en) | 1996-01-03 |
| EP0690658A3 EP0690658A3 (en) | 1996-06-12 |
| EP0690658B1 true EP0690658B1 (en) | 1998-04-01 |
Family
ID=6519630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95107547A Expired - Lifetime EP0690658B1 (en) | 1994-06-01 | 1995-05-18 | Loudspeaker |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5546470A (en) |
| EP (1) | EP0690658B1 (en) |
| JP (1) | JPH089495A (en) |
| AT (1) | ATE164719T1 (en) |
| DE (2) | DE4419312A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0685979A3 (en) * | 1994-06-01 | 1997-04-23 | Nokia Technology Gmbh | Centering diaphragm. |
| DE4419249A1 (en) * | 1994-06-01 | 1995-12-07 | Nokia Deutschland Gmbh | speaker |
| US6289106B1 (en) | 1997-08-08 | 2001-09-11 | Hong Long Industrial Co., Ltd. | Cap and center pole apparatus and method of coupling |
| DE102004034882B4 (en) * | 2004-07-19 | 2015-08-27 | Norman Gerkinsmeyer | driver |
| DE102007013529A1 (en) | 2007-03-21 | 2008-09-25 | Trw Automotive Gmbh | Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section |
| RU195636U1 (en) * | 2019-11-20 | 2020-02-03 | Олег Григорьевич Лобанов | LINEAR DYNAMIC SPEAKER |
| RU210726U1 (en) * | 2021-09-06 | 2022-04-28 | Олег Григорьевич Лобанов | LINEAR DYNAMIC SPEAKER |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4241212A1 (en) * | 1992-12-08 | 1994-06-09 | Nokia Deutschland Gmbh | Drive system for moving coil loudspeakers - has moving coil supplied by central contact discs with coil springs loading carrier coupled to coil |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614181A (en) * | 1970-07-02 | 1971-10-19 | Us Air Force | Magnetic bearing for combined radial and thrust loads |
| JPS5472031A (en) * | 1977-11-18 | 1979-06-09 | Matsushita Electric Ind Co Ltd | Speaker |
| GB2062408B (en) * | 1979-10-02 | 1984-02-22 | Victor Company Of Japan | Speaker |
| NL8200416A (en) * | 1982-02-04 | 1983-09-01 | Philips Nv | FLAT MEMBRANE CONVERTER AND METHOD FOR MAKING SUCH A CONVERTER |
| US4910620A (en) * | 1987-05-14 | 1990-03-20 | Siemens Aktiengesellschaft | Thermal compensation structure for a disk pack module |
| SU1760647A1 (en) * | 1990-11-19 | 1992-09-07 | Всесоюзный научно-исследовательский институт радиовещательного приема и акустики им.А.С.Попова | Electrodynamic loudspeaker |
| JP2943344B2 (en) * | 1991-02-07 | 1999-08-30 | 松下電器産業株式会社 | Speaker |
| DE9109452U1 (en) * | 1991-07-31 | 1991-10-17 | Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim | Cone speaker |
-
1994
- 1994-06-01 DE DE4419312A patent/DE4419312A1/en not_active Withdrawn
-
1995
- 1995-05-18 EP EP95107547A patent/EP0690658B1/en not_active Expired - Lifetime
- 1995-05-18 DE DE59501748T patent/DE59501748D1/en not_active Expired - Fee Related
- 1995-05-18 AT AT95107547T patent/ATE164719T1/en not_active IP Right Cessation
- 1995-05-23 US US08/447,558 patent/US5546470A/en not_active Expired - Fee Related
- 1995-05-31 JP JP7133842A patent/JPH089495A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4241212A1 (en) * | 1992-12-08 | 1994-06-09 | Nokia Deutschland Gmbh | Drive system for moving coil loudspeakers - has moving coil supplied by central contact discs with coil springs loading carrier coupled to coil |
Non-Patent Citations (1)
| Title |
|---|
| Patent Abstracts of Japan vol.3, no.94 (E129), 10/08/79 & JP-A-54072031 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089495A (en) | 1996-01-12 |
| DE4419312A1 (en) | 1995-12-07 |
| US5546470A (en) | 1996-08-13 |
| EP0690658A3 (en) | 1996-06-12 |
| ATE164719T1 (en) | 1998-04-15 |
| EP0690658A2 (en) | 1996-01-03 |
| DE59501748D1 (en) | 1998-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0480160B1 (en) | Dome-shaped high-frequency loudspeaker | |
| DE4317775C2 (en) | speaker | |
| DE2946618C2 (en) | ||
| DE602004005465T2 (en) | SPEAKER WITH WAVE MEMBRANE | |
| DE19654156C2 (en) | Speaker unit and speaker system using the speaker unit | |
| EP0591837B1 (en) | Magnet system for a light-weight loudspeaker | |
| DE3302592C2 (en) | ||
| DE2429464A1 (en) | ACOUSTIC CONVERTER, IN PARTICULAR BROADBAND SPEAKERS | |
| EP0804048B1 (en) | Loudspeaker | |
| EP0525400B1 (en) | Diaphragm for cone loudspeaker | |
| EP0690658B1 (en) | Loudspeaker | |
| DE19618898A1 (en) | speaker | |
| DE102012100117A1 (en) | Speaker with an annular body in the form of a flat plate | |
| EP0492142B1 (en) | Driver system for an extended-travel bass loudspeaker | |
| DE10085229B4 (en) | Centering spring with offset vertex | |
| DE3308946C2 (en) | ||
| EP0531691A2 (en) | Moving coil system for an electromagnetic transducer | |
| DE1226645B (en) | Dynamic microphone | |
| EP0685980A2 (en) | Loudspeaker | |
| EP0471990B1 (en) | Double-coil loudspeaker | |
| DE19747955A1 (en) | speaker | |
| DE1887812U (en) | Electromagnet | |
| DE2065650C3 (en) | Electromagnetic pickup | |
| DE1797780U (en) | SPEAKER. | |
| DE587136C (en) | Magnet system for electrodynamic loudspeakers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE DE DK ES FR GB IT NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE DE DK ES FR GB IT NL SE |
|
| 17P | Request for examination filed |
Effective date: 19960510 |
|
| 17Q | First examination report despatched |
Effective date: 19961217 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE DK ES FR GB IT NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980401 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19980401 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980401 |
|
| REF | Corresponds to: |
Ref document number: 164719 Country of ref document: AT Date of ref document: 19980415 Kind code of ref document: T |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980409 |
|
| REF | Corresponds to: |
Ref document number: 59501748 Country of ref document: DE Date of ref document: 19980507 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980701 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980701 |
|
| ET | Fr: translation filed | ||
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| BERE | Be: lapsed |
Owner name: NOKIA TECHNOLOGY G.M.B.H. Effective date: 19980531 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19990512 Year of fee payment: 5 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000518 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090518 Year of fee payment: 15 Ref country code: DE Payment date: 20090528 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090528 Year of fee payment: 15 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100518 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110131 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101201 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100518 |