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 itInfo
- 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- Withdrawn
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
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)
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)
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 |
-
1978
- 1978-06-23 DE DE19782827515 patent/DE2827515A1/en not_active Withdrawn
Cited By (2)
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 |