DE902260C - Molded membrane - Google Patents

Molded membrane

Info

Publication number
DE902260C
DE902260C DEP55606A DEP0055606A DE902260C DE 902260 C DE902260 C DE 902260C DE P55606 A DEP55606 A DE P55606A DE P0055606 A DEP0055606 A DE P0055606A DE 902260 C DE902260 C DE 902260C
Authority
DE
Germany
Prior art keywords
membrane
sound propagation
form membrane
section
treated
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
Application number
DEP55606A
Other languages
German (de)
Inventor
Eberhard Vollmer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP55606A priority Critical patent/DE902260C/en
Application granted granted Critical
Publication of DE902260C publication Critical patent/DE902260C/en
Expired legal-status Critical Current

Links

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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Description

Die Erfindung betrifft eine mit wasserabweisenden Mitteln, vorzugsweise aus langfaserigen Stoffen bestehende Formmenbran für akustische Zwecke, die mit einem folienhilden@den Lack überzogen .ist, :dessen Weichmacher- oder Lösungsmittelzusatz -durch den Verarbeitungsdruck (Spritzdruck), die Verarbeitungstemperatur und die .dabei herrschende Luftfeuchtigkeit bestimmt ist.The invention relates to one with water-repellent agents, preferably Formed membranes made of long-fiber materials for acoustic purposes that use the lacquer is coated with a foil aid @: its plasticizer or solvent additive -by the processing pressure (injection pressure), the processing temperature and the .the prevailing air humidity is determined.

Um den Klangcharakter derartiger Membranen zu verbessern und damit -den Klirrfäktor herabzusetzen, wird erfindungsgemäß vorgeschlagen, den Lacküberzug so aufzutragen, @daßseine Auftragsdicke vom Antriebssystem in Richtung der Schallausbreitung abnimmt. Den gleichen Zweck verfolgt die Maßnahme, daß die Membran, die nach obigen Angaben bearbeitet ist, einen von der Antriebsseite in Richtung der Abstrahlausbreitung stetig abnehmenden Querschnitt aufweist.To improve the sound character of such membranes and thus -to reduce the Klirrfäktor, it is proposed according to the invention, the lacquer coating to be applied in such a way @ that its application thickness from the drive system in the direction of sound propagation decreases. The same purpose pursues the measure that the membrane, according to the above Information is processed, one from the drive side in the direction of the radiation propagation has steadily decreasing cross-section.

Der Zeichnung ist ein Ausführungsbeispiel zu entnehmen, und zwar zeigt Fig. i die Membran eines Konuslautsprechers, Eig. 2 die Membran mit gekrümmter Fläche. Die Membran i, die nachdem Gieß- oder Schöpfverfahren hergestellt ist, wird mit der Lackschicht 3 bzw. 3' versehen. Ihr Querschnitt zeigt einen konisch verlaufenden, in Richtung :der Schallabstrahlung stetig abnehmenden Querschnitt auf. Der Auftrag,der Lackschicht erfolgt so, daß seine Dicke ebenfalls in Richtung der Schallabstrahlung abnimmt. Da die an der. Membran befestigten Zentriermittel und Halterungen ebenfalls aus einem Faserstoff zu bestehen pflegen, werden auch diese mit -der oben angegebenen Lackschicht behandelt. Eine nach diesem Verfahren hergestellte Membran hat sich dann @al@s besonders zweckmäßig herausgestellt, wenn ihr Öffnungswinkel gegenüber der nicht behandelten um einige-Grade erhöht wird:.The drawing shows an exemplary embodiment, namely shows Fig. I the membrane of a cone loudspeaker, Eig. 2 the membrane with a curved surface. The membrane i, which is produced by the casting or scooping process, is with the lacquer layer 3 or 3 'provided. Their cross-section shows a conical, in the direction of: the sound radiation steadily decreasing cross-section. The job that The lacquer layer is made so that its thickness is also in the direction of sound radiation decreases. Since the. Membrane attached centering means and brackets as well usually consist of a fiber material, these are also marked with the above Treated paint layer. A membrane produced by this process has proven itself then @ al @ s particularly expedient if their opening angle opposite that which is not treated is increased by a few degrees:

Claims (3)

PATENTANSPRÜCHE: i. Mit wasserabweisenden Mitteln behandelte, vorzugsweise nach dem Gieß- oder Schöpfverfahren hergestellte, insbesondere aus langfaserigen Stoffen bestehende Formmenbran für akustische Zwecke, die mit einem fol.ienbildenden. Lack überzotigen ist, idessen Weichmacher-oder Lösungsmittelzusatz :durch den Verarbeitungsdruck (Spritzdruck), die Verarbeitungstemperatur und die dabei herrschende Luftfeuchtigkeit bestimmt mst, dadurch gekennzeichnet, @d@aß der Lacküberzug so aufgetragen ist, d.aß seine Auftragsdicke vom Antriebssystem in Richtung der Schallausbreitung abnimmt. PATENT CLAIMS: i. Treated with water repellants, preferably produced by the pouring or scooping process, in particular from long-fiber Materials existing form membrane for acoustic purposes with a foil-forming. Varnish is too much, because of the addition of plasticizers or solvents: due to the processing pressure (Injection pressure), the processing temperature and the prevailing humidity determined, characterized in that the lacquer coating is applied in such a way that d.that its application thickness decreases from the drive system in the direction of the sound propagation. 2. Formmenbran nach Anspruch i, gekennzeichnet durch einen von der Antriebsseite in Richtung der Abstrahlschallausbreitung stetig abnehmenden Querschnitt. 2. molding diaphragm according to claim i, characterized by one of the drive side steadily decreasing cross-section in the direction of the radiated sound propagation. 3. Formmenbran nach den Ansprüchen i und2"dadürch gekennzeichnet,daß .derÖffnun!gswinkel der Membran gegenüber dem üblichen Maß um einige Grade vergrößert ist.3. Form membrane according to claims 1 and 2 "characterized in that .the opening angle of the membrane is increased by a few degrees compared to the usual size.
DEP55606A 1949-09-22 1949-09-22 Molded membrane Expired DE902260C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP55606A DE902260C (en) 1949-09-22 1949-09-22 Molded membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP55606A DE902260C (en) 1949-09-22 1949-09-22 Molded membrane

Publications (1)

Publication Number Publication Date
DE902260C true DE902260C (en) 1954-01-21

Family

ID=7387886

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP55606A Expired DE902260C (en) 1949-09-22 1949-09-22 Molded membrane

Country Status (1)

Country Link
DE (1) DE902260C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2282203A1 (en) * 1974-08-12 1976-03-12 Rehde Weber LOUD SPEAKER
WO2004006623A2 (en) * 2002-07-08 2004-01-15 Harman International Industries, Incorporated Multilayer loudspeaker diaphragm

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2282203A1 (en) * 1974-08-12 1976-03-12 Rehde Weber LOUD SPEAKER
WO2004006623A2 (en) * 2002-07-08 2004-01-15 Harman International Industries, Incorporated Multilayer loudspeaker diaphragm
WO2004006623A3 (en) * 2002-07-08 2004-07-01 Harman Int Ind Multilayer loudspeaker diaphragm
US7539324B2 (en) 2002-07-08 2009-05-26 Harman International Industries, Incorporated Loudspeaker diaphragm systems

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