DE2827515A1 - Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it - Google Patents

Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it

Info

Publication number
DE2827515A1
DE2827515A1 DE19782827515 DE2827515A DE2827515A1 DE 2827515 A1 DE2827515 A1 DE 2827515A1 DE 19782827515 DE19782827515 DE 19782827515 DE 2827515 A DE2827515 A DE 2827515A DE 2827515 A1 DE2827515 A1 DE 2827515A1
Authority
DE
Germany
Prior art keywords
air
melting
skin
film onto
plastics film
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Withdrawn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
DE19782827515
Other languages
German (de)
Inventor
Hermann Hechinger
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.)
SABA GmbH
Original Assignee
SABA 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 SABA GmbH filed Critical SABA GmbH
Priority to DE19782827515 priority Critical patent/DE2827515A1/en
Publication of DE2827515A1 publication Critical patent/DE2827515A1/en
Withdrawn legal-status Critical Current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
    • H04R7/16—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

Abstract

Beaded ring of foamed and compacted polyurethane has >1 surface provided with an air-impermeable skin. This skin is obtd. either by (superficial) fusing or by laminating the surface with a film. The article, improves the performance of a loudspeaker in that it effectively dampens undesirable partial vibrations in certain frequency ranges. Moreover, it reduces sensitivity of the loudspeaker to atmospheric humidity. Esp. suitable for "woofers".

Description

Sickenring für LautsprecherBead ring for loudspeakers

Die Erfindung bezieht sich auf einen Sickenring für Lautsprecher.The invention relates to a bead ring for loudspeakers.

Es ist bekannt, derartige Sickenringe aus geformtem Gummi anzufertigen. Sie sind gegenüber den zuvor bekannten Sickenringen aus Gewebe billiger und einfacher herzustellen.It is known to make such bead rings from molded rubber. They are cheaper and simpler than the previously known corrugated rings made of fabric to manufacture.

Für Tiefton-Lautsprecher jedoch wirken sich diese immer noch ungünstig auf den Wirkungsgrad aus. Um diesen zu verbessern, ohne eine Verteuerung durch Wahl eines stärkeren Magneten in Kauf nehmen zu müssen, wurde deshalb vorgeschlagen, die Sickenringe aus geschäumten Polyurethan herzustellen ( DE-OS 22 32 o70 ). Derartige Sickenringe sind aber insbesondere bei der Anwendung auf Tiefton-Lautsprecher nicht ganz luftdicht und besitzen dabei den Nachteil, dass Partialachwingungen auftreten können. Auch ist der bekannte Werkstoff nicht frei von Beeinflussungen durch die Luftfeuchtigkeit.For bass speakers, however, these are still unfavorable on the efficiency. To improve it without making it more expensive by choice Having to accept a stronger magnet has therefore been suggested to produce the bead rings from foamed polyurethane (DE-OS 22 32 o70). Such However, there are no beaded rings, especially when used on woofers completely airtight and have the disadvantage that partial vibrations occur can. The known material is also not free from influences by the Humidity.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, einen für Tiefton-Lautsprecher geeigneten Sickenring vorzuschlagen, der luftundurchlässig ist und der das Partialschwingverhalten dämpft. Diese Aufgabe wird durch die in den Ansprüchen gekennzeichneten r,aßnahmen dadurch gelöst, dass das Ze.schäumte:und danach verdichtete Material für den Sickenring auf mindestens einer Oberfläche mit einer luftdichten Haut versehen ist.The present invention is therefore based on the object To propose a bead ring suitable for woofer speakers, which is impermeable to air and which dampens the partial oscillation behavior. This task is carried out by the in the claims characterized in that the Ze.schäumte: and then compacted material for the bead ring on at least one surface with is provided with an airtight skin.

Diese Haut kann entweder durch einen Schmelzvorgang erzeugt werden, indem das Material, aus dem die Sickenringe geformt werden, zuvor über eine oberflächliche Erhitzung angeschmolzen wird, oder dass dieses durch Anbringen einer folienartigen Kaschierung luftdicht gemacht wird.This skin can either be created by a melting process, by the material from which the bead rings are formed, previously over a superficial Heating is melted, or that this is done by attaching a film-like Lamination is made airtight.

Um eine nachteilige Einwirkung der Luftfeuchtigkeit zu umgehen, können beide Seiten des Materials auf die erste und/oder zweite beschriebene Art luftdicht abgeschlossen werden.To avoid adverse effects of humidity, you can both sides of the material are airtight in the first and / or second described manner be completed.

Claims (3)

PATENTA(SPROCHE Sickenring aus; geschäumtem und verdichtstem Polyurethan für eine Laiitsprechermembrane-, dadurch gekennzeichnet, dass mindestens eine Obßrfläche des Sickenrings mit einer luftdichten Haut versehen ist. PATENTA (SPROCHE bead ring made of; foamed and compressed polyurethane for a lay speaker membrane, characterized in that at least one surface the bead ring is provided with an airtight skin. 2. Sickenring nach Anspruch 1, dadurch gekennzeichnet, dass die luftdichte Haut durch einen Schmelzvorgang hergestellt ist.2. bead ring according to claim 1, characterized in that the airtight Skin is made by a melting process. 3. Sickenring nach Anspruch 1, dadurch gekennzeichnet, dass die luftdichte Haut durch Anbringen einer folienartigen Kaschierung luftdicht gemacht ist.3. bead ring according to claim 1, characterized in that the airtight Skin is made airtight by attaching a film-like lamination.
DE19782827515 1978-06-23 1978-06-23 Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it Withdrawn DE2827515A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782827515 DE2827515A1 (en) 1978-06-23 1978-06-23 Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782827515 DE2827515A1 (en) 1978-06-23 1978-06-23 Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it

Publications (1)

Publication Number Publication Date
DE2827515A1 true DE2827515A1 (en) 1980-01-10

Family

ID=6042515

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782827515 Withdrawn DE2827515A1 (en) 1978-06-23 1978-06-23 Air-proofing polyurethane annular loudspeaker part - by surface-melting to form impervious skin or laminating plastics film onto it

Country Status (1)

Country Link
DE (1) DE2827515A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508150A2 (en) * 1991-04-11 1992-10-14 Nokia (Deutschland) GmbH Loudspeaker with an element joining the suspension and the (built-in) seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508150A2 (en) * 1991-04-11 1992-10-14 Nokia (Deutschland) GmbH Loudspeaker with an element joining the suspension and the (built-in) seal
EP0508150A3 (en) * 1991-04-11 1993-07-14 Nokia (Deutschland) Gmbh Loudspeaker with an element joining the suspension and the (built-in) seal

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Legal Events

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

Owner name: GTE SYLVANIA LICHT GMBH, 8520 ERLANGEN, DE

8127 New person/name/address of the applicant

Owner name: SABA GMBH, 7730 VILLINGEN-SCHWENNINGEN, DE

8139 Disposal/non-payment of the annual fee