DE3831867A1 - Membrane with bead - Google Patents

Membrane with bead

Info

Publication number
DE3831867A1
DE3831867A1 DE19883831867 DE3831867A DE3831867A1 DE 3831867 A1 DE3831867 A1 DE 3831867A1 DE 19883831867 DE19883831867 DE 19883831867 DE 3831867 A DE3831867 A DE 3831867A DE 3831867 A1 DE3831867 A1 DE 3831867A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
bead
thermoplastic
elastomer
membrane
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.)
Ceased
Application number
DE19883831867
Other languages
German (de)
Inventor
Patrick Brown
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/16Mounting or tensioning of diaphragms or cones
    • H04R7/18Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Abstract

In a membrane (1) with bead (2) for a loudspeaker, the bead (2) is made from a thermoplastic elastomer. The thermoplastic elastomer may be coloured. The bead (2) is manufactured by injection moulding.

Description

Die Erfindung bezieht sich auf eine Membran mit Sicke für einen Lautsprecher. The invention relates to a membrane for a loudspeaker bead.

Hochwertige Lautsprecher weisen an ihrer Membran eine Sicke aus Gummi auf, um gute akustische Eigenschaften zu erreichen. Quality speakers have on their membrane on a bead of rubber to achieve good acoustic properties. Das Vulkanisieren einer Sicke aus Gummi benötigt eine lange Zeitspanne. Vulcanizing a bead of rubber requires a long period of time. Der Ausgangswerkstoff ist manchmal ungleichmäßig, wodurch keine gleichmäßigen Sicken gefertigt werden können, was zu einem ungleichmäßigen Akustikverhalten führt. The starting material is sometimes uneven, whereby no uniform beads can be made, resulting in an uneven acoustic behavior.

Der Erfindung liegt die Aufgabe zugrunde, eine billigere Sicke für eine Membran eines Lautsprechers anzugeben, die die gleichen guten oder besseren Eigenschaften wie eine Sicke aus Gummi aufweist. The invention has for its object to provide a cheaper bead for a diaphragm of a loudspeaker, which has the same good or better properties, such as a bead made of rubber.

Die Lösung dieser Aufgabe erfolgt dadurch, daß die Sicke aus einem thermoplastischen Elastomer besteht. The solution of this object is characterized in that the bead consists of a thermoplastic elastomer. Von Vorteil ist hierbei, daß solche Sicken eine geringe Streuung ihrer Eigenschaften aufweisen, da die Ausgangsstoffe gleichmäßig sind. Of advantage here is that such beads have low dispersion of their characteristics because the starting materials are uniformly. Daraus ergibt sich ein gleichmäßiges akustisches Verhalten der mit solchen Sicken versehenen Membranen in einen Lautsprecher. This results in an even acoustic behavior of membranes provided with such beads in a speaker.

Das thermoplastische Elastomer für die Sicke kann auch auf einfache Weise eingefärbt werden, wodurch ein gefälliges Aussehen des mit einer solchen Membran gebauten Lautsprechers erreicht wird. The thermoplastic elastomer for the bead can also be dyed easily, creating a pleasing appearance of the speaker built with such a membrane is achieved.

Zum Erreichen einer kurzen Herstellzeit der Sicken wird das Spritzgußverfahren eingesetzt, was einen günstigen Stückpreis zur Folge hat. To achieve a short production time of the beads, the injection molding process is used, which has a favorable unit price result.

Die Erfindung wird nun anhand eines in der einzigen Figur dargestellten Ausführungsbeispieles näher erläutert. The invention will now be explained with reference to an embodiment shown in the single FIGURE embodiment.

In der Figur ist eine Membran 1 mit einer Sicke 2 im Schnitt dargestellt. In the figure, a membrane 1 with a bead 2 is shown in section. Am unteren Ende der Membran 1 ist ein Membranhals 3 zur Aufnahme einer Schwingspule (nicht dargestellt) angeformt. At the lower end of the membrane 1, a membrane neck 3 for receiving a voice coil (not shown) formed. Die Sicke 2 ist an der Membran 1 beispielsweise mittels eines Klebstoffes befestigt. The bead 2 is attached to the diaphragm 1 for example by means of an adhesive. Der mit dieser Membran gebaute Lautsprecher ist nicht dargestellt. The built with this membrane speaker is not shown.

Die Sicke 2 besteht aus einem thermoplastischen Elastomer und sie ist bspw. im Spritzgußverfahren hergestellt, da dieses Verfahren nur kurze Taktzeiten benötigt. The bead 2 is composed of a thermoplastic elastomer and is, for example, prepared by injection molding, since this method requires only short cycle times. Das thermoplastische Elastomer kann eingefärbt sein, um der Sicke eine bestimmte Farbe zu geben. The thermoplastic elastomer may be colored to give the bead a particular color. Dadurch können auch optisch ansprechende Lautsprecher gebaut werden. This also visually appealing speakers can be built.

Als thermoplastische Elastomere haben sich folgende als geeignet erwiesen: As thermoplastic elastomers as the following have proven suitable:
Kraton D, Cariflex, Kraton G der Firma Shell, Kraton D, Cariflex, Kraton G from Shell,
Solprene der Firma Philips, Solprene Philips,
Levaflex, Desmopan der Firma Bayer, Levaflex, Desmopan from Bayer,
Santoprene, Geolast der Firma Monsanto, Santoprene, Geolast Monsanto,
Alcryn, Hytrel der Firma Dupont, Alcryn®, Hytrel of Dupont,
Estane der Firma Goodrich, Estane from Goodrich,
Pellethane der Firma Upjohn, Pellethane Upjohn,
Arnitril der Firma Akzo, Arnitril Akzo,
Pebax der Firma Atochem. Pebax Atochem.

Die dargestellte Form der Sicke und der Membran ist nur als ein Beispiel anzusehen. The shape of the bead and the membrane illustrated is to be regarded only as an example. Die Formen können entsprechend den Erfordernissen in bestimmten Lautsprechern variiert werden. The shapes can be varied according to the requirements in particular loudspeakers.

Claims (3)

  1. 1. Membran mit Sicke für einen Lautsprecher, dadurch gekennzeichnet, daß die Sicke ( 2 ) aus einem thermoplastischen Elastomer besteht. 1. membrane bead for a loudspeaker, characterized in that the bead (2) of a thermoplastic elastomer.
  2. 2. Membran mit Sicke nach Anspruch 1, dadurch gekennzeichnet, daß das thermoplastische Elastomer eingefärbt ist. 2. membrane with bead according to claim 1, characterized in that the thermoplastic elastomer is colored.
  3. 3. Membran mit Sicke nach Anspruch 1, dadurch gekennzeichnet, daß die ( 2 ) Sicke im Spritzgußverfahren hergestellt ist. 3. membrane with bead according to claim 1, characterized in that the (2) bead is produced by injection molding.
DE19883831867 1988-09-20 1988-09-20 Membrane with bead Ceased DE3831867A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883831867 DE3831867A1 (en) 1988-09-20 1988-09-20 Membrane with bead

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883831867 DE3831867A1 (en) 1988-09-20 1988-09-20 Membrane with bead
PCT/EP1989/001073 WO1990003710A1 (en) 1988-09-20 1989-09-15 Membrane with bead

Publications (1)

Publication Number Publication Date
DE3831867A1 true true DE3831867A1 (en) 1990-03-29

Family

ID=6363298

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883831867 Ceased DE3831867A1 (en) 1988-09-20 1988-09-20 Membrane with bead

Country Status (2)

Country Link
DE (1) DE3831867A1 (en)
WO (1) WO1990003710A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111748A1 (en) * 1991-04-11 1992-10-15 Nokia Deutschland Gmbh Speakers with surround, and (einbauab-) seal unifying component

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492914A3 (en) * 1990-12-20 1992-10-21 Leach, Patrick Arthur Loudspeaker cone and surround assembly
DE69301151D1 (en) * 1992-01-15 1996-02-15 Patrick Arthur Leach Method and apparatus for producing a speaker cone and a bead arrangement
DE4343324A1 (en) * 1993-12-18 1995-06-22 Nokia Deutschland Gmbh Suspension for cone loudspeakers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241757A1 (en) * 1982-11-11 1984-05-17 Ehmann Elektrotech Oscillating insert for an electromechanical transducer and method for its manufacture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997023A (en) * 1975-12-10 1976-12-14 White Stanley F Loudspeaker with improved surround
JPS62286400A (en) * 1986-06-04 1987-12-12 Onkyo Corp Supporting member for electroacoustic transducer diaphragm

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241757A1 (en) * 1982-11-11 1984-05-17 Ehmann Elektrotech Oscillating insert for an electromechanical transducer and method for its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111748A1 (en) * 1991-04-11 1992-10-15 Nokia Deutschland Gmbh Speakers with surround, and (einbauab-) seal unifying component

Also Published As

Publication number Publication date Type
WO1990003710A1 (en) 1990-04-05 application

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: NOKIA (DEUTSCHLAND) GMBH, 7530 PFORZHEIM, DE

8110 Request for examination paragraph 44
8131 Rejection