EP0702501A2 - Dynamic loudspeaker with centering membrane - Google Patents

Dynamic loudspeaker with centering membrane Download PDF

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Publication number
EP0702501A2
EP0702501A2 EP95113286A EP95113286A EP0702501A2 EP 0702501 A2 EP0702501 A2 EP 0702501A2 EP 95113286 A EP95113286 A EP 95113286A EP 95113286 A EP95113286 A EP 95113286A EP 0702501 A2 EP0702501 A2 EP 0702501A2
Authority
EP
European Patent Office
Prior art keywords
voice coil
loudspeaker
membrane
stranded wires
dynamic loudspeaker
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Withdrawn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
EP95113286A
Other languages
German (de)
French (fr)
Other versions
EP0702501A3 (en
Inventor
Harald Schröder
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke 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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of EP0702501A2 publication Critical patent/EP0702501A2/en
Publication of EP0702501A3 publication Critical patent/EP0702501A3/en
Withdrawn legal-status Critical Current

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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
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Definitions

  • the invention relates to a dynamic loudspeaker with a concentric beads, made of a fabric film, attached to the loudspeaker basket and the voice coil neck centering membrane and with current leads formed from flexible stranded wires for the loudspeaker voice coil.
  • the loudspeaker membrane used for sound generation is movably attached to the voice coil neck and to the edge of the membrane on the loudspeaker basket.
  • a centering membrane made of a fabric film into which concentric beads are pressed is used for suspension on the voice coil neck.
  • the fabric foil In order for the voice coil to be guided securely in the air gap of the magnet system, the fabric foil must be treated with lacquer, otherwise it will not be rigid enough.
  • the air-permeable centering membrane is glued to the voice coil neck and the speaker basket.
  • the power supply for the voice coil takes place via flexible copper strands, which are soldered at one end to a connection terminal provided on the loudspeaker basket and at the other end to a connecting wire of the voice coil and fastened in the wall of the loudspeaker membrane by means of an adhesive.
  • the wire and strand ends fixed on the front of the loudspeaker diaphragm by means of an adhesive as well as the gluing points are clearly visible. However, this optical flaw is not accepted by all users.
  • the invention is based on the object of designing a dynamic loudspeaker in such a way that the front of the loudspeaker membrane has no wires, copper strands or connection points.
  • each of the stranded wires is mechanically attached at one end to the voice coil neck and electrically contacted with a voice coil wire and connected at the other end to a connecting terminal provided on the loudspeaker basket and that the centering membrane on its front and / or rear side is provided with guide channels in which the stranded wires are stored and fastened.
  • a dynamic loudspeaker 1 known per se essentially consists of a magnet system 2, which is not shown, an annular gap, a loudspeaker basket 3, a loudspeaker membrane 4, a voice coil, not shown, which is movably arranged in the annular gap, the voice coil neck 5 protruding from the annular gap with the opening of a centering membrane 6 and glued to the opening of the speaker diaphragm 4 is.
  • the loudspeaker membrane 4 is movably attached to the loudspeaker basket 3 via a flexible bead ring 7.
  • the centering membrane 6 is made of a fabric film into which concentric beads 8 are pressed. It is permeable to air and treated with varnish to achieve the required rigidity.
  • the centering membrane 6 is attached with its outer edge to the speaker basket 3 by gluing.
  • highly flexible copper strands 9, 10 are used, each of which has one end 11, 12 connected to terminals 13, 14 arranged in the loudspeaker basket 3.
  • the copper strands 9, 10 are supported in guide channels formed by cutouts 15, which are provided in the beads 8 of the centering membrane on the front side thereof.
  • the ends 11 '/ 12' of the copper strands 9, 10 facing away from the connecting terminals 13, 14 are each fastened tangentially to the voice coil neck 5 by means of a hard adhesive and are connected to a voice coil wire end 16, 17 by means of a soldered connection.
  • the guide channels located in one plane of the centering membrane 6 each have a semicircular curve.
  • the copper strands 9, 10 mounted in the guide channels are fastened in the beads of the beads 8 with a highly flexible adhesive.

Landscapes

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

Abstract

The loudspeaker has the centring membrane (6) attached to the oscillation coil neck (5), with the current leads for the oscillation coil provided by flexible filament wires (9, 10), each attached to the oscillation coil neck at one end (11', 12') and electrically contacting one end (16, 17) of the oscillation coil wire. The other end (11, 12) of each filament wire is connected to a terminal (13, 14) provided by the loudspeaker cone, with the intermediate length of each filament wire received in guide channels (15) provided in the front and/or rear side of the centring membrane. Pref. the filament wires are secured in the channels via a highly flexible adhesive.

Description

Die Erfindung betrifft einen dynamischen Lautsprecher mit einer konzentrische Sicken aufweisenden, aus einer Gewebefolie hergestellten, am Lautsprecherkorb und am Schwingspulenhals befestigten Zentriermembran und mit aus flexiblen Litzendrähten gebildeten Stromzuführungen für die Lautsprecherschwingspule.The invention relates to a dynamic loudspeaker with a concentric beads, made of a fabric film, attached to the loudspeaker basket and the voice coil neck centering membrane and with current leads formed from flexible stranded wires for the loudspeaker voice coil.

Bei üblichen dynamischen Lautsprechern ist die zur Schallerzeugung dienende Lautsprechermembran am Schwingspulenhals und am Membranrand beweglich am Lautsprecherkorb befestigt. Zur Aufhängung am Schwingspulenhals dient eine, aus einer Gewebefolie, in welche konzentrische Sicken eingepreßt sind, hergestellte Zentriermembran. Damit die Schwingspule sicher im Luftspalt des Magnetsystem geführt wird, muß die Gewebefolie mit Lack behandelt werden, da sie sonst zu wenig starr ist. Die luftdurchlässig ausgebildete Zentriermembran ist am Schwingspulenhals und am Lautsprecherkorb angeklebt. Die Stromzuführung für die Schwingspule erfolgt über flexible Kupferlitzen, die jeweils mit ihrem einen Ende an einer am Lautsprecherkorb vorgesehenen Anschlußklemme und mit ihrem anderen Ende mit einem Anschlußdraht der Schwingspule verlötet und in der Wandung der Lautsprechermembran mittels eines Klebers befestigt sind. Die auf der Frontseite der Lautsprechermembran mittels eines Klebers festgelegten Draht- und Litzenenden sowie die Klebestellen sind jedoch deutlich sichtbar. Dieser optische Makel wird jedoch nicht von allen Benutzern akzeptiert.In conventional dynamic loudspeakers, the loudspeaker membrane used for sound generation is movably attached to the voice coil neck and to the edge of the membrane on the loudspeaker basket. A centering membrane made of a fabric film into which concentric beads are pressed is used for suspension on the voice coil neck. In order for the voice coil to be guided securely in the air gap of the magnet system, the fabric foil must be treated with lacquer, otherwise it will not be rigid enough. The air-permeable centering membrane is glued to the voice coil neck and the speaker basket. The power supply for the voice coil takes place via flexible copper strands, which are soldered at one end to a connection terminal provided on the loudspeaker basket and at the other end to a connecting wire of the voice coil and fastened in the wall of the loudspeaker membrane by means of an adhesive. However, the wire and strand ends fixed on the front of the loudspeaker diaphragm by means of an adhesive as well as the gluing points are clearly visible. However, this optical flaw is not accepted by all users.

Der Erfindung liegt die Aufgabe zugrunde, einen dynamischen Lautsprecher derart auszubilden, daß die Frontseite der Lautsprechermembran keine Drähte, Kupferlitzen oder Verbindungsstellen aufweist.The invention is based on the object of designing a dynamic loudspeaker in such a way that the front of the loudspeaker membrane has no wires, copper strands or connection points.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß jeder der Litzendrähte mit dem einen Ende mechanisch am Schwingspulenhals befestigt sowie elektrisch mit einem Schwingspulendraht kontaktiert und mit dem anderen Ende mit einer am Lautsprecherkorb vorgesehenen Anschlußklemme verbunden ist und daß die Zentriermembran an ihrer Vorder- und/oder Rückseite mit Führungskanälen versehen ist, in denen die Litzendrähte gelagert und befestigt sind.This object is achieved in that each of the stranded wires is mechanically attached at one end to the voice coil neck and electrically contacted with a voice coil wire and connected at the other end to a connecting terminal provided on the loudspeaker basket and that the centering membrane on its front and / or rear side is provided with guide channels in which the stranded wires are stored and fastened.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, einen dynamischen Lautsprecher ohne zusätzlichen Kostenaufwand so zu gestalten, daß die Frontseite der Lautsprechermembran keine optisch störenden Teile für die Energieversorgung der Schwingspule aufweist. Vorteilhafte Ausgestaltung der Erfindung sind in den Unteransprüchen angegeben.The advantages achieved by the invention are, in particular, to design a dynamic loudspeaker at no additional cost in such a way that the front of the loudspeaker membrane has no optically disturbing parts for the energy supply of the voice coil. Advantageous embodiments of the invention are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen:

Fig. 1
eine teilgeschnittene perspektivische Darstellung eines dynamischen Lautsprechers und
Fig. 2
eine vergrößert dargestellten Teilausschnitt der Fig. 1.
Show it:
Fig. 1
a partially sectioned perspective view of a dynamic speaker and
Fig. 2
2 shows an enlarged partial section of FIG. 1.

Ein an sich bekannter dynamischer Lautsprecher 1 besteht im wesentlichen aus einem einen nicht dargestellten Ringspalt aufweisenden Magnetsystem 2, einem Lautsprecherkorb 3, einer Lautsprechermembran 4, einer im Ringspalt beweglich angeordneten, nicht dargestellten Schwingspule, deren aus dem Ringspalt herausragender Schwingspulenhals 5 mit der Öffnung einer Zentriermembran 6 sowie mit der Öffnung der Lautsprechermembran 4 verklebt ist. Die Lautsprechermembran 4 ist über einen flexiblen Sickenring 7 beweglich am Lautsprecherkorb 3 befestigt. Die Zentriermembran 6 ist aus einer Gewebefolie, in welche konzentrische Sicken 8 eingepreßt sind, hergestellt. Sie ist luftdurchlässig und zur Erzielung einer erforderlichen Starrheit mit Lack behandelt. Die Zentriermembran 6 ist mit ihrem äußeren Rand am Lautsprecherkorb 3 durch Klebung befestigt. Für die Stromzuführung der Schwingspule dienen hochflexible Kupferlitzen 9, 10, die jeweils mit ihrem einen Ende 11, 12 an im Lautsprecherkorb 3 angeordneten Anschlußklemmen 13, 14 angeschlossen sind.A dynamic loudspeaker 1 known per se essentially consists of a magnet system 2, which is not shown, an annular gap, a loudspeaker basket 3, a loudspeaker membrane 4, a voice coil, not shown, which is movably arranged in the annular gap, the voice coil neck 5 protruding from the annular gap with the opening of a centering membrane 6 and glued to the opening of the speaker diaphragm 4 is. The loudspeaker membrane 4 is movably attached to the loudspeaker basket 3 via a flexible bead ring 7. The centering membrane 6 is made of a fabric film into which concentric beads 8 are pressed. It is permeable to air and treated with varnish to achieve the required rigidity. The centering membrane 6 is attached with its outer edge to the speaker basket 3 by gluing. For the power supply of the voice coil, highly flexible copper strands 9, 10 are used, each of which has one end 11, 12 connected to terminals 13, 14 arranged in the loudspeaker basket 3.

Bei einem erfindungsgemäßen Lautsprecher sind die Kupferlitzen 9, 10 in durch Aussparungen 15 gebildeten Führungskanälen gelagert, welche in den Sicken 8 der Zentriermembran an deren Vorderseite vorgesehen sind. Die den Anschlußklemmen 13, 14 abgewandten Enden 11'/12' der Kupferlitzen 9, 10 sind jeweils mittels eines harten Klebers tangential anliegend am Schwingspulenhals 5 befestigt sowie mittels einer Lötverbindung mit einem Schwingspulendrahtende 16, 17 verbunden. Die in einer Ebene der Zentriermembran 6 befindlichen Führungskanäle weisen je einen halbkreisbogenförmigen Verlauf auf. Die in den Führungskanälen gelagerten Kupferlitzen 9, 10 sind mit einem hochflexiblen Kleber in den Wülsten der Sicken 8 befestigt.In a loudspeaker according to the invention, the copper strands 9, 10 are supported in guide channels formed by cutouts 15, which are provided in the beads 8 of the centering membrane on the front side thereof. The ends 11 '/ 12' of the copper strands 9, 10 facing away from the connecting terminals 13, 14 are each fastened tangentially to the voice coil neck 5 by means of a hard adhesive and are connected to a voice coil wire end 16, 17 by means of a soldered connection. The guide channels located in one plane of the centering membrane 6 each have a semicircular curve. The copper strands 9, 10 mounted in the guide channels are fastened in the beads of the beads 8 with a highly flexible adhesive.

Claims (4)

Dynamischer Lautsprecher mit einer konzentrische Sicken aufweisenden, aus einer Gewebefolie hergestellten, am Lautsprecherkorb und am Schwingspulenhals befestigten Zentriermembran und mit aus flexiblen Litzendrähten gebildeten Stromzuführungen für die Lautsprecherschwingspule,
dadurch gekennzeichnet,
daß jeder der Litzendrähte (9, 10) mit dem einen Ende (11',12') mechanisch am Schwingspulenhals (5) befestigt sowie elektrisch mit einem Schwingspulendrahtende (16, 17) kontaktiert und mit dem anderen Ende (11, 12) mit einer am Lautsprecherkorb (3) vorgesehenen Anschlußklemme (13, 14) verbunden ist und daß die Zentriermembran (6) an ihrer Vorder- und/oder Rückseite mit Führungskanälen (15) versehen ist in denen die Litzendrähte (9, 10) gelagert und befestigt sind.Dynamic loudspeaker with a concentric beading, made of a fabric film, attached to the speaker cage and the voice coil neck centering membrane and with current leads formed from flexible stranded wires for the voice coil,
characterized,
that each of the stranded wires (9, 10) with one end (11 ', 12') mechanically attached to the voice coil neck (5) and electrically contacted with a voice coil wire end (16, 17) and with the other end (11, 12) with one on the loudspeaker basket (3) provided connecting terminal (13, 14) and that the centering membrane (6) is provided on its front and / or back with guide channels (15) in which the stranded wires (9, 10) are mounted and fastened. Dynamischer Lautsprecher nach Anspruch 1,
dadurch gekennzeichnet,
daß die Führungskanäle (15) in den Wülsten der Sicken (8) angeordnet und die Litzendrähte (9, 10) mit einem hochflexiblen Kleber darin festgelegt sind.Dynamic loudspeaker according to claim 1,
characterized,
that the guide channels (15) are arranged in the beads of the beads (8) and the stranded wires (9, 10) are fixed therein with a highly flexible adhesive. Dynamischer Lautsprecher nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
daß der Verlauf eines Führungskanals derart gewählt ist, daß seine Länge wesentlich größer als die radiale Entfernung zwiscim der äußeren und der inneren Sicke ist.Dynamic loudspeaker according to one of claims 1 or 2,
characterized,
that the course of a guide channel is chosen such that its length is substantially greater than the radial distance between the outer and inner beads. Dynamischer Lautsprecher nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Litzendrähte (9, 10) mit ihren Anschlußenden (11',12') tangential am Schwingspulenhals (5) anliegen und mittels eines harten Klebers daran befestigt sind.Dynamic loudspeaker according to one of Claims 1 to 3,
characterized,
that the stranded wires (9, 10) with their connecting ends (11 ', 12') lie tangentially on the voice coil neck (5) and are fastened to it by means of a hard adhesive.
EP95113286A 1994-09-13 1995-08-24 Dynamic loudspeaker with centering membrane Withdrawn EP0702501A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9414836U 1994-09-13
DE9414836U DE9414836U1 (en) 1994-09-13 1994-09-13 Dynamic loudspeaker with a centering membrane

Publications (2)

Publication Number Publication Date
EP0702501A2 true EP0702501A2 (en) 1996-03-20
EP0702501A3 EP0702501A3 (en) 1996-06-05

Family

ID=6913624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113286A Withdrawn EP0702501A3 (en) 1994-09-13 1995-08-24 Dynamic loudspeaker with centering membrane

Country Status (2)

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EP (1) EP0702501A3 (en)
DE (1) DE9414836U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8180097B2 (en) 2008-05-23 2012-05-15 Sennheiser Electronic Gmbh & Co. Kg Dynamic electro-acoustic transducer and earphone

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9414836U1 (en) * 1994-09-13 1994-11-03 Blaupunkt-Werke Gmbh, 31139 Hildesheim Dynamic loudspeaker with a centering membrane

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL56193C (en) * 1938-01-24
DE2943054C2 (en) * 1979-10-25 1982-09-30 Westra Electronic Gmbh, 8901 Welden Dynamic speaker
US4376233A (en) * 1980-12-18 1983-03-08 Sony Corporation Securing of lead wires to electro-acoustic transducers
EP0369434B1 (en) * 1988-11-15 1995-02-01 Kabushiki Kaisha Kenwood Speaker damper configuration
KR970007296B1 (en) * 1989-04-19 1997-05-07 가부시끼가이샤 켄우드 Wiring structure of loudspeaker
US5249236A (en) * 1989-12-01 1993-09-28 Kabushiki Kaisha Kenwood Wiring structure of loudspeaker
JP2791830B2 (en) * 1990-10-05 1998-08-27 株式会社ケンウッド Speaker damper and method of manufacturing the same
DE9414836U1 (en) * 1994-09-13 1994-11-03 Blaupunkt-Werke Gmbh, 31139 Hildesheim Dynamic loudspeaker with a centering membrane

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8180097B2 (en) 2008-05-23 2012-05-15 Sennheiser Electronic Gmbh & Co. Kg Dynamic electro-acoustic transducer and earphone

Also Published As

Publication number Publication date
DE9414836U1 (en) 1994-11-03
EP0702501A3 (en) 1996-06-05

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