EP0377171A2 - Loudspeaker with plug-in connecting leads - Google Patents

Loudspeaker with plug-in connecting leads Download PDF

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Publication number
EP0377171A2
EP0377171A2 EP89123626A EP89123626A EP0377171A2 EP 0377171 A2 EP0377171 A2 EP 0377171A2 EP 89123626 A EP89123626 A EP 89123626A EP 89123626 A EP89123626 A EP 89123626A EP 0377171 A2 EP0377171 A2 EP 0377171A2
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
console
plug
contact elements
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89123626A
Other languages
German (de)
French (fr)
Other versions
EP0377171A3 (en
Inventor
Ulrich Kizak
Jörg Prokisch
Heinz Reif
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Deutschland GmbH
Original Assignee
Nokia Unterhaltungselektronik Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Unterhaltungselektronik Deutschland GmbH filed Critical Nokia Unterhaltungselektronik Deutschland GmbH
Publication of EP0377171A2 publication Critical patent/EP0377171A2/en
Publication of EP0377171A3 publication Critical patent/EP0377171A3/en
Withdrawn legal-status Critical Current

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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

Definitions

  • the invention relates to a loudspeaker of the design specified in the preamble of claim 1.
  • Loudspeakers are known in a large variety of types, which results from the wide range of applications of loudspeakers.
  • the latter are used in aircraft, for example, as on-board loudspeakers and are used both in radio and television sets and in radio reception systems for motor vehicles.
  • a plug-in eyelet used to produce loudspeaker connections is described, for example, in DE-GM 83 05 528. It consists of a sheet metal stamped part provided with a connecting lug and at least one plug-in knife, which is fastened by being pressed into a slot in the loudspeaker basket.
  • the complementary contact elements are flat plug sleeves connected to connecting wires, which are pushed onto the plug-in knives in the axial direction.
  • the invention has for its object to provide a speaker with attachable connecting wires according to the preamble of claim 1, the electrical connections made automatically when installing the speaker in a bracket and automatically disconnected when removing the speaker.
  • This object is achieved according to the invention by the constructive measures specified in the characterizing part of this claim.
  • Advantageous embodiments of the subject matter of claim 1 can be found in the subclaims. Advantages achievable with the invention are mentioned in the description.
  • the invention is described in more detail with reference to an embodiment shown in a drawing as follows.
  • the drawing shows the section of a speaker inserted into a console with full contact, partially cut and shown in a side view.
  • the loudspeaker is designated 1 overall. It consists, among other things, of a basket 2 molded from plastic, the peripheral edge 3 of which has an L-shaped cross section. The inside of the lower L-leg edge is glued to the edge 4 of the loudspeaker membrane 5, while the outside of the lower L-leg edge when fastening the loudspeaker 1, e.g. in a separate holder, serves as a contact surface.
  • the speaker bracket is designed as a frame-shaped console 6. This consists of a one-piece injection molded plastic part, which has a wedge shape in the side view. On the top the console 6 is provided with a circumferential recess 7. When installing the loudspeaker 1, it serves to receive the edge 3 from the loudspeaker basket 2. In the area of the greatest console height, the side wall 8 penetrates a plurality of contact chambers, into each of which a contact element 10 connected to a connecting wire 9 is inserted in a self-locking manner.
  • the contact element 10 is an embodiment with at least two mutually opposing spring legs 11, between which a contact knife can be inserted.
  • the embodiment of the contact element 10 shown in the drawing has two pairs of spring legs 11 which project freely into a recess 12 in the side wall 8 on the inside of the console.
  • the contact element 13 which is complementary to the contact element 10 of the console 6, consists of a flat sheet-metal stamped part with a plug-in knife 14, a fastening tab 15 standing up next to the base of the plug-in knife 14 and a soldering tab 16 arranged at the rear end of the fastening tab 15. This serves to connect the one end of the voice coil Loudspeaker 1 by means of a stranded wire 17.
  • the contact element 13 is fixed by pressing the fastening tab 15 into corresponding slots in the basket 2, in such a way that the outer, narrow longitudinal edge 18 of the plug-in knife 14 in the installed position of the loudspeaker 1 inside the console recess 12 parallel next to it the vertical side wall 8 stands up.
  • a second contact element of identical configuration is fastened in the loudspeaker basket 2 at a parallel distance of, for example, 15 mm for the other voice coil end, and likewise a second one in the console 6 Contact element 10 with spring legs 11.
  • the plug-in knives 14 are dimensioned so long that the spring legs 11 of two stacked contact elements 10 of the console 6 contact a plug-in knife 14 for connecting multi-way car speakers.
  • the loudspeaker 1 is brought into contacting position in an individual case directly or during series production with an insertion aid. In this position, the edge 3 of the speaker basket 2 touches the edge 4 of the console 6 in the area above the contact elements 10, 13.
  • the plug-in knives 14 are pivoted in with the outer longitudinal edges 18 between the spring legs 11. So that the spring legs 11 can slide easily, the longitudinal edges 18 are each provided with a chamfer.
  • both parts are automatically and releasably locked with the contacting, so that the loudspeaker 1 and the console 6 form a compact structural unit with a strain-relieved plug connection.
  • the assembly allows e.g. to be fastened in openings in the mounting plate of a vehicle by also simply pushing it in. If necessary, however, a quick disassembly of the loudspeaker 1 with automatic separation of the loudspeaker contact is possible. Even when using such speakers in a reusable system, since there are no more solder joints.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

To achieve automatic contact with the connector blades (14) mounted on the loudspeaker chassis (2) when inserting a loudspeaker (1) into a frame-shaped bracket (6), contact elements (10) connected to connecting leads (9) are used which have spring legs (11) and are mounted in contact chambers of a side wall (8) in such a manner that the spring legs (11) freely protrude on the inside. During the assembly, the loudspeaker (1) is inserted with the edge (3) of the chassis (2) above the contact elements (10) into a peripheral recess (7) of the bracket (6) and pressed down until loudspeaker (1) and bracket (6) automatically lock together. During this process, the connector blades (14) are pivoted with the outer longitudinal edge (18) first in between the spring legs (11). <IMAGE>

Description

Die Erfindung betrifft einen Lautsprecher der im Oberbegriff des Anspruchs 1 näher bezeichneten Ausführung.The invention relates to a loudspeaker of the design specified in the preamble of claim 1.

Lautsprecher sind in großer Typenvielfalt bekannt, die aus dem breiten Anwendungsbereich von Lautsprechern resultiert. Letztere dienen in Flugzeugen beispielsweise als Bordlautsprecher und sie werden sowohl in Rundfunk- und Fernsehgeräten als auch in Rundfunk-Empfangsanlagen für Kraftfahrzeuge verwendet.Loudspeakers are known in a large variety of types, which results from the wide range of applications of loudspeakers. The latter are used in aircraft, for example, as on-board loudspeakers and are used both in radio and television sets and in radio reception systems for motor vehicles.

Eine zur Herstellung von Lautsprecheranschlüssen dienende Stecklötöse ist beispielsweise im DE-GM 83 05 528 beschrieben. Sie besteht aus einem mit Anschlußfahne und wenigstens einem Steckmesser versehenen Blechstanzteil, das durch Einpressen in einen Schlitz des Lautsprecherkorbes befestigt wird. Die komplementären Kontaktelemente sind flache, mit Anschlußdrähten verbundene Steckhülsen, die in Axialrichtung auf die Steckmesser geschoben werden.A plug-in eyelet used to produce loudspeaker connections is described, for example, in DE-GM 83 05 528. It consists of a sheet metal stamped part provided with a connecting lug and at least one plug-in knife, which is fastened by being pressed into a slot in the loudspeaker basket. The complementary contact elements are flat plug sleeves connected to connecting wires, which are pushed onto the plug-in knives in the axial direction.

Der Erfindung liegt die Aufgabe zugrunde, einen Lautsprecher mit ansteckbaren Anschlußdrähten gemäß Oberbegriff des Anspruchs 1 zu schaffen, dessen elektrische Verbindungen beim Einbau des Lautsprechers in eine Halterung selbsttätig hergestellt und beim Ausbau des Lautsprechers automatisch getrennt werden. Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil dieses Anspruchs angegebenen konstruktiven Maßnahmen gelöst. Vorteilhafte Ausgestaltungen des Gegenstandes des Anspruchs 1 können den Unteransprüchen entnommen werden. Mit der Erfindung erzielbare Vorteile sind in der Beschreibung erwähnt.The invention has for its object to provide a speaker with attachable connecting wires according to the preamble of claim 1, the electrical connections made automatically when installing the speaker in a bracket and automatically disconnected when removing the speaker. This object is achieved according to the invention by the constructive measures specified in the characterizing part of this claim. Advantageous embodiments of the subject matter of claim 1 can be found in the subclaims. Advantages achievable with the invention are mentioned in the description.

Die Erfindung wird anhand eines in einer Zeichnung dargestellten Ausführungsbeispiels wie folgt näher beschrieben. Die Zeichnung zeigt dabei den Ausschnitt eines in eine Konsole eingesetzten Lautsprechers mit vollständiger Kontaktierung, teilweise geschnitten und in einer Seitenansicht dargestellt.The invention is described in more detail with reference to an embodiment shown in a drawing as follows. The drawing shows the section of a speaker inserted into a console with full contact, partially cut and shown in a side view.

In der Zeichnung ist der Lautsprecher insgesamt mit 1 bezeichnet. Er besteht unter anderem aus einem aus Kunststoff gespritzten Korb 2, dessen umlaufender Rand 3 einen L-förmigen Querschnitt hat. Die Innenseite des unteren L-Schenkelrandes ist mit dem Rand 4 der Lautsprechermembrane 5 verklebt, während die Außenseite des unteren L-Schenkelrandes beim Befestigen des Lautsprechers 1, z.B. in einer separaten Halterung, als Anlagefläche dient.In the drawing, the loudspeaker is designated 1 overall. It consists, among other things, of a basket 2 molded from plastic, the peripheral edge 3 of which has an L-shaped cross section. The inside of the lower L-leg edge is glued to the edge 4 of the loudspeaker membrane 5, while the outside of the lower L-leg edge when fastening the loudspeaker 1, e.g. in a separate holder, serves as a contact surface.

Wie die Zeichnung zeigt, ist die Lautsprecherhalterung als rahmenförmige Konsole 6 ausgebildet. Diese besteht aus einem einstückig gespritzten Kunststoffteil, das in der Seitenansicht Keilform aufweist. Auf der Oberseite ist die Konsole 6 mit einer umlaufenden Ausnehmung 7 versehen. Bei der Montage des Lautsprechers 1 dient sie zur Aufnahme des Randes 3 vom Lautsprecherkorb 2. Im Bereich der größten Konsolenhöhe durchsetzen die Seitenwand 8 mehrere Kontaktkammern, in die je ein mit einem Anschlußdraht 9 verbundenes Kontaktelement 10 sich selbstverriegelnd eingesetzt ist. Bei dem Kontaktelement 10 handelt es sich um eine Ausführung mit wenigstens zwei einander gegenüberstehenden Federschenkeln 11, zwischen die ein Kontaktmesser einführbar ist. Das in der Zeichnung dargestellte Ausführungsbeispiel des Kontaktelementes 10 hat zwei Paare Federschenkel 11, die auf der Konsoleninnenseite frei in eine Aussparung 12 der Seitenwand 8 ragen.As the drawing shows, the speaker bracket is designed as a frame-shaped console 6. This consists of a one-piece injection molded plastic part, which has a wedge shape in the side view. On the top the console 6 is provided with a circumferential recess 7. When installing the loudspeaker 1, it serves to receive the edge 3 from the loudspeaker basket 2. In the area of the greatest console height, the side wall 8 penetrates a plurality of contact chambers, into each of which a contact element 10 connected to a connecting wire 9 is inserted in a self-locking manner. The contact element 10 is an embodiment with at least two mutually opposing spring legs 11, between which a contact knife can be inserted. The embodiment of the contact element 10 shown in the drawing has two pairs of spring legs 11 which project freely into a recess 12 in the side wall 8 on the inside of the console.

Das zum Kontaktelement 10 der Konsole 6 komplementäre Kontaktelement 13 besteht aus einem ebenen Blechstanzteil mit einem Steckmesser 14, einem neben der Basis des Steckmessers 14 hochstehenden Befestigungslappen 15 und einer am rückwärtigen Ende des Befestigungslappens 15 angeordneten Lötfahne 16. Diese dient zum Anschließen des einen Schwingspulenendes vom Lautsprecher 1 mittels eines Litzendrahtes 17. Das Kontaktelement 13 wird durch Einpressen des Befestigungslappens 15 in entsprechende Schlitze des Korbes 2 fixiert und zwar in der Weise, daß die äußere, schmale Längskante 18 des Steckmessers 14 in Einbaulage des Lautsprechers 1 innerhalb der Konsolenaussparung 12 parallel neben der vertikalen Seitenwand 8 hochsteht. Zu diesem Kontaktelement 13 ist in einem parallelen Abstand von beispielsweise 15 mm für das andere Schwingspulenende ein zweites Kontaktelement identischer Konfiguration im Lautsprecherkorb 2 befestigt und analog dazu in der Konsole 6 ebenfalls ein zweites Kontaktelement 10 mit Federschenkeln 11. Die Steckmesser 14 sind so lang bemessen, daß für den Anschluß von Mehrwege-Autolautsprechern die Federschenkel 11 von zwei übereinander angeordneten Kontaktelementen 10 der Konsole 6 je ein Steckmesser 14 kontaktieren.The contact element 13, which is complementary to the contact element 10 of the console 6, consists of a flat sheet-metal stamped part with a plug-in knife 14, a fastening tab 15 standing up next to the base of the plug-in knife 14 and a soldering tab 16 arranged at the rear end of the fastening tab 15. This serves to connect the one end of the voice coil Loudspeaker 1 by means of a stranded wire 17. The contact element 13 is fixed by pressing the fastening tab 15 into corresponding slots in the basket 2, in such a way that the outer, narrow longitudinal edge 18 of the plug-in knife 14 in the installed position of the loudspeaker 1 inside the console recess 12 parallel next to it the vertical side wall 8 stands up. To this contact element 13, a second contact element of identical configuration is fastened in the loudspeaker basket 2 at a parallel distance of, for example, 15 mm for the other voice coil end, and likewise a second one in the console 6 Contact element 10 with spring legs 11. The plug-in knives 14 are dimensioned so long that the spring legs 11 of two stacked contact elements 10 of the console 6 contact a plug-in knife 14 for connecting multi-way car speakers.

Bei der Montage wird der Lautsprecher 1 im Einzelfall unmittelbar oder während der Serienproduktion mit einer Einführungshilfe in Kontaktierungsposition gebracht. In dieser Lage berührt der Rand 3 des Lautsprecherkorbes 2 den Rand 4 der Konsole 6 im Bereich über den Kontaktelementen 10, 13. Beim Eindrücken des Lautsprechers 1 in die Konsole 6 werden die Steckmesser 14 mit den äußeren Längskanten 18 voran zwischen die Federschenkel 11 eingeschwenkt. Damit die Federschenkel 11 leicht aufgleiten können, sind die Längskanten 18 mit je einer Fase versehen. Beim Eindrücken des Lautsprechers 1 in die Konsole 6 werden zugleich mit der Kontaktierung beide Teile selbsttätig lösbar verriegelt, so daß Lautsprecher 1 und Konsole 6 eine kompakte Baueinheit mit zugentlasteter Steckverbindung bilden. An der Unterseite der Konsole 6 mit angeformten Rasthaken gestatten es die Baueinheit z.B. in Durchbrüchen des Aufnahmebleches eines Fahrzeuges durch ebenfalls einfaches Eindrücken zu befestigen. Falls erforderlich, ist jedoch eine schnelle Demontage des Lautsprechers 1 mit automatischer Trennung der Lautsprecherkontaktierung möglich. Selbst bei Verwendung von derartigen Lautsprechern in einem Mehrwegsystem, da keine Lötstellen mehr vorhanden sind.During assembly, the loudspeaker 1 is brought into contacting position in an individual case directly or during series production with an insertion aid. In this position, the edge 3 of the speaker basket 2 touches the edge 4 of the console 6 in the area above the contact elements 10, 13. When the speaker 1 is pressed into the console 6, the plug-in knives 14 are pivoted in with the outer longitudinal edges 18 between the spring legs 11. So that the spring legs 11 can slide easily, the longitudinal edges 18 are each provided with a chamfer. When the loudspeaker 1 is pressed into the console 6, both parts are automatically and releasably locked with the contacting, so that the loudspeaker 1 and the console 6 form a compact structural unit with a strain-relieved plug connection. On the underside of the console 6 with molded catch hooks, the assembly allows e.g. to be fastened in openings in the mounting plate of a vehicle by also simply pushing it in. If necessary, however, a quick disassembly of the loudspeaker 1 with automatic separation of the loudspeaker contact is possible. Even when using such speakers in a reusable system, since there are no more solder joints.

Claims (6)

1. Lautsprecher mit ansteckbaren Anschlußdrähten, bestehend aus wenigstens zwei am Korb des Lautsprechers befestigten Kontaktelementen, die je ein Steckmesser haben und wenigstens zwei in Kontaktkammern eines Isolierkörpers gehalterten und mit den Anschlußdrähten verbundenen Kontaktelementen, welche die Steckmesser lösbar kontaktieren, dadurch gekenn­zeichnet, daß der Isolierkörper als rahmenförmige, den Lautsprecher (1) haltende Konsole (6) mit in einer Seitenwand (8) angeordneten Kontaktkammern ausgebildet ist, daß die in den Kontaktkammern gehalterten Kontaktelemente (10) auf der Innenseite der Konsole (6) vorstehende Federschenkel (11) haben, zwischen die beim Einbau des Lautsprechers (1) in die Konsole (6), die Steckmesser (14) mit der äußeren Längskante (18) voran eingeschwenkt sind.1. Loudspeaker with attachable connecting wires, consisting of at least two contact elements fastened to the basket of the loudspeaker, each having a plug-in knife and at least two contact elements held in contact chambers of an insulating body and connected to the connecting wires, which detachably contacting the plug-in knives, characterized in that the insulating body is designed as a frame-shaped console (6) holding the loudspeaker (1) with contact chambers arranged in a side wall (8) such that the contact elements (10) held in the contact chambers have projecting spring legs (11) on the inside of the console (6), between which when the speaker (1) is installed in the console (6), the plug-in knives (14) are pivoted in with the outer longitudinal edge (18) in front. 2. Lautsprecher nach Anspruch 1, dadurch gekennzeichnet, daß der Lautsprecherkorb (2) und die Konsole (6) mittels einer Rastverbindung lösbar aneinander befestigt sind.2. Loudspeaker according to claim 1, characterized in that the speaker basket (2) and the console (6) are detachably fastened to one another by means of a latching connection. 3. Lautsprecher nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Lautsprecherkorb (2) mit dem Rand (3) in eine umlaufende Ausnehmung (7) der Konsole (6) eingesetzt ist.3. Loudspeaker according to claim 1 and 2, characterized in that the speaker basket (2) with the edge (3) in a circumferential recess (7) of the console (6) is inserted. 4. Lautsprecher nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Konsole (6) eine Keilform hat und die mit den Kontaktelementen (10) bestückten Kontaktkammern in der Seitenwand (8) im Bereich der größten Konsolenhöhe angeordnet sind.4. Loudspeaker according to claim 1 to 3, characterized in that the console (6) has a wedge shape and the with the contact elements (10) equipped contact chambers in the side wall (8) are arranged in the region of the greatest console height. 5. Lautsprecher nach Anspruch 1 und 4, dadurch gekennzeichnet, daß die am Lautsprecherkorb (2) befestigten Kontaktelemente (13) aus je einem Steckmesser (14), einem neben der Basis hochstehenden Befestigungslappen (15) und einer am rückwärtigen Ende des Befestigungslappens (15) angeordneten Lötfahne (16) bestehen.5. A loudspeaker according to claim 1 and 4, characterized in that the contact elements (13) attached to the loudspeaker basket (2) each consist of a plug-in knife (14), a fastening tab (15) standing up next to the base and one at the rear end of the fastening tab (15 ) arranged solder tab (16) exist. 6. Lautsprecher nach Anspruch 4 und 5, dadurch gekennzeichnet, daß die Federschenkel (11) der Kontaktelemente (10) der Konsole (6) frei in eine Aussparung (12) der Seitenwand (8) ragen und daß die Steckmesser (14) der am Lautsprecherkorb (2) befestigten Kontaktelemente (13) in Einbaulage des Lautsprechers (1) mit den äußeren Längskanten (18) in der Aussparung (12) parallel neben der Seitenwand (8) hochstehen.6. Loudspeaker according to claim 4 and 5, characterized in that the spring legs (11) of the contact elements (10) of the console (6) protrude freely into a recess (12) in the side wall (8) and that the plug-in knife (14) on Loudspeaker basket (2) attached contact elements (13) in the installed position of the loudspeaker (1) with the outer longitudinal edges (18) in the recess (12) stand parallel next to the side wall (8).
EP19890123626 1989-01-03 1989-12-21 Loudspeaker with plug-in connecting leads Withdrawn EP0377171A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893900039 DE3900039A1 (en) 1989-01-03 1989-01-03 SPEAKER WITH PLUG-IN CONNECTING WIRE
DE3900039 1989-01-03

Publications (2)

Publication Number Publication Date
EP0377171A2 true EP0377171A2 (en) 1990-07-11
EP0377171A3 EP0377171A3 (en) 1991-07-24

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Application Number Title Priority Date Filing Date
EP19890123626 Withdrawn EP0377171A3 (en) 1989-01-03 1989-12-21 Loudspeaker with plug-in connecting leads

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EP (1) EP0377171A3 (en)
DE (1) DE3900039A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478979A2 (en) * 1990-10-01 1992-04-08 Blaupunkt-Werke GmbH Electrodynamic loudspeaker
WO1998058520A1 (en) * 1997-06-19 1998-12-23 Goodmans Loudspeakers Limited Loudspeakers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19847734B4 (en) * 1998-10-16 2007-08-02 Grundig Multimedia B.V. Plug and terminal block for connecting a loudspeaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704356B1 (en) * 1976-06-11 1977-12-08 Siemens AG, 1000 Berlin und 8000 München Knife edge electrical connector - includes blade with reinforcing ribs across contacting face in fork socket
WO1983002707A1 (en) * 1982-02-01 1983-08-04 Tozawa, Minoru Speaker unit
DE3220405A1 (en) * 1982-05-29 1983-12-01 Standard Elektrik Lorenz Ag, 7000 Stuttgart Plug blade
US4752962A (en) * 1985-04-11 1988-06-21 Telefunken Fernseh Und Rundfunk Gmbh Loudspeaker unit with means for releasably fastening loudspeaker chassis is to its frame

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704356B1 (en) * 1976-06-11 1977-12-08 Siemens AG, 1000 Berlin und 8000 München Knife edge electrical connector - includes blade with reinforcing ribs across contacting face in fork socket
WO1983002707A1 (en) * 1982-02-01 1983-08-04 Tozawa, Minoru Speaker unit
DE3220405A1 (en) * 1982-05-29 1983-12-01 Standard Elektrik Lorenz Ag, 7000 Stuttgart Plug blade
US4752962A (en) * 1985-04-11 1988-06-21 Telefunken Fernseh Und Rundfunk Gmbh Loudspeaker unit with means for releasably fastening loudspeaker chassis is to its frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478979A2 (en) * 1990-10-01 1992-04-08 Blaupunkt-Werke GmbH Electrodynamic loudspeaker
EP0478979A3 (en) * 1990-10-01 1992-08-26 Blaupunkt-Werke Gmbh Electrodynamic loudspeaker
WO1998058520A1 (en) * 1997-06-19 1998-12-23 Goodmans Loudspeakers Limited Loudspeakers

Also Published As

Publication number Publication date
EP0377171A3 (en) 1991-07-24
DE3900039A1 (en) 1990-07-05

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