DE2842999A1 - Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former - Google Patents

Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former

Info

Publication number
DE2842999A1
DE2842999A1 DE19782842999 DE2842999A DE2842999A1 DE 2842999 A1 DE2842999 A1 DE 2842999A1 DE 19782842999 DE19782842999 DE 19782842999 DE 2842999 A DE2842999 A DE 2842999A DE 2842999 A1 DE2842999 A1 DE 2842999A1
Authority
DE
Germany
Prior art keywords
loudspeaker
heat
centring
coil former
membrane
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Withdrawn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
DE19782842999
Other languages
German (de)
Inventor
Harry Dr Gaus
Karl Mueller
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.)
Braun GmbH
Original Assignee
Braun 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 Braun GmbH filed Critical Braun GmbH
Priority to DE19782842999 priority Critical patent/DE2842999A1/en
Publication of DE2842999A1 publication Critical patent/DE2842999A1/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Withdrawn legal-status Critical Current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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements

Landscapes

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

Abstract

The heat sinking system has the moving-coil loudspeaker's centring membrane made of thermally conducting material and connected via thermally-conducting connections to the moving coil and/or to the support frame of the loudspeaker. The membrane may consist of a weave of copper thread. The membrane is bonded to a thermally conducting coil former. The coil former may be made of aluminium. All the thermally conducting parts of the heat-sinking system are good thermal conductors. Increasing the heat conducted away from the loudspeaker allows the loudspeaker's power rating to be increased. The system described here may be used in conjunction with other cooling systems to achieve greater power increases.

Description

Die Erfindung betrifft eine Vorrichtung nach demThe invention relates to a device according to the

Oberbegriff des Patentanspruchs 1.Preamble of claim 1.

Der Schutz vor thermischer Uberlastung stellt ein seit langem bekanntes Problem bei dynamischen Lautsprechern dar.The protection against thermal overload has been known for a long time Problem with dynamic speakers.

Um derartige Lautsprecher vor zu großer Erwärmung zu schützen, sind bereits zahlreiche Sehutzschaltungen vorgeschlagen -worden (DE-OSen 23 56 731, 22 17 523, US-PS 4 o93 822). Diese Schutzschaltungen verhindern zwar, daß ein Lautsprecher überlastet wird, sie ermöglichen es jedoch nicht, die Leistung eines Lautsprechers zu erhöhen.To protect loudspeakers of this type from excessive heating, are Numerous protective circuits have already been proposed (DE-OSes 23 56 731, 22 17,523, U.S. Patent 4,093,822). Although these protective circuits prevent a loudspeaker being overloaded, however, they do not allow the performance of a speaker to increase.

Zur Erhöhung der Lautsprecherleistung wurde bereits vorgeschlagenQaas Lautsprechergehäuse oder die Gehäuseoberfläche und/oder die Schallwand des Lautsprechers aus einem Material mit einer Wärmeleitfähigkeit von W> 40 kcal/m.h. 0C besteht und zwischen der wärmeerzeugenden Schwingspule und dem Lautsprechergehäuse oder der Gehäuseoberfläche und/oder der Schallwand eine Verbindung vorgesehen ist, die ebenfalls eine Wärmeleitfähigkeit W> 40 keal/m.h,°C hat (DE-OS 26 o7 390).To increase speaker performance, Qaas has already been proposed Loudspeaker housing or the housing surface and / or the baffle of the loudspeaker made of a material with a thermal conductivity of W> 40 kcal / m.h. 0C exists and between the heat generating voice coil and the speaker cabinet or the housing surface and / or the baffle a connection is provided which also has a thermal conductivity W> 40 keal / m.h, ° C (DE-OS 26 o7 390).

Es ist ferner ein elektrodynamischer Lautsprecher mit einem Schwingspulenkörper aus Metall bekannt, bei dem die Mittel- und/oder die Außenpole des Lautsprechers durch einen die Wärme gut leitenden Metallteil entsprechend der Länge des Spulenkörpers verlängert sind (DE-PS 732 959).It is also an electrodynamic loudspeaker with a voice coil bobbin known from metal, in which the center and / or the outer poles of the loudspeaker by a metal part that conducts heat well, corresponding to the length of the coil body are extended (DE-PS 732 959).

Der Erfindung liegt die Aufgabe zugrunde, eine weitere Péöglichkeit der Wärmeleitung bei Lautsprechern zu schaffen, die allein oder in Verbindung, mit den bereits bn.kinn%en Verfahren zu einer Leistungserhöhung von Lautsprechern führt.The invention is based on the object of a further possibility to create heat conduction in speakers that are used alone or in conjunction with the already bn.kinn% en procedures to an increase in performance of Speakers leads.

Diese Aufgabe wird gemäß den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This task is achieved according to the characterizing features of the patent claim 1 solved.

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 is described in more detail below.

Die einzige Zeichnung zeigt einen Lautsprecher 1, der einen Magneten mit einer unteren Polplatte 2, mit einer oberen Polplatte 3 und mit einem zentralen Pol aufweist, wobei den zentralen Pol ein Spulenkörper 4 der z.B. aus Aluminium besteht, umgibt. Zwischen den beiden Polplatten 2, 3 ist ein ringförmiger Magnet 5 angeordnet5 der den Spulenkörper 4 umgibt. Dieser letztgenannte Spulenkörper 4 trägt eine Sprachspule 6.The only drawing shows a loudspeaker 1, which has a magnet with a lower pole plate 2, with an upper pole plate 3 and with a central one Pole, the central pole being a bobbin 4 of, for example, aluminum consists, surrounds. An annular magnet is located between the two pole plates 2, 3 5 arranged5 which surrounds the coil body 4. This last-mentioned bobbin 4 carries a voice coil 6.

Ein Lautsprecherkorb 7 ist über eine Dichtung 8 mit einer Membran 9 verbunden, in deren Zentrum eine Kalotte lo angeordnet ist.A loudspeaker frame 7 is provided with a membrane via a seal 8 9 connected, in the center of which a dome lo is arranged.

Der Spulenkörper 4 ist mit einer Zentriermembran 11 verbunden, welche gewährleistet, daß die Sprachspule 6 stets zentrisch im Magnetfeld angeordnet ist. Unterhalb dieser Zentriermernbran 11 ist der Lautsprecherkorb 7 mittels Schrauben 12, 13 mit dem ringförmigen Magneten 5 verbunden.The coil body 4 is connected to a centering membrane 11, which ensures that the voice coil 6 is always arranged centrally in the magnetic field. The loudspeaker cage 7 is located below this centering flange 11 by means of screws 12, 13 connected to the ring-shaped magnet 5.

Die Zentriermembran 11 weist in vorteilhafter Weise eingewirkte Metallfäden mit Wärmekontakt zur Spulenkörper 4 Ur.(4 ZU unteren Bereich des Lautsprecherkorbs 7 auf.The centering membrane 11 advantageously has interwoven metal threads with thermal contact to the coil form 4 Ur. (4 to the lower area of the loudspeaker frame 7 on.

Claims (4)

Vorrichtung zur Wärmeableitung bei dynamischen Lautsprechern Patentansprüche ei Vorrichtung zur Wärmeableitung bei dynamischen Lautsprechern mit einer Schwingspule und einem Lautsprecherkorb, dadurch gekennzeichnet, daß die Zentriermembran aus gut wärmeleitfähigen Materialien besteht und Uber gut wärmeleitende Verbindungen mit der Schwingspule und/oder dem Lautsprecherkorb verbunden ist.Device for heat dissipation in dynamic loudspeakers claims ei Device for heat dissipation in dynamic loudspeakers with a voice coil and a loudspeaker frame, characterized in that the centering membrane consists of Good thermally conductive materials and Uber good thermally conductive connections is connected to the voice coil and / or the loudspeaker frame. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zentriermembran aus einem kupferfädenhaltigen Gewebe besteht. 2. Apparatus according to claim 1, characterized in that the centering membrane consists of a copper thread-containing fabric. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zentriermembran auf einen gut wärmeleitenden Spulenkörper aufgeklebt ist.3. Apparatus according to claim 1, characterized in that the centering membrane is glued to a bobbin that conducts heat well. 4. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Spulenkörper aus Aluminium besteht.4. Apparatus according to claim 4, characterized in that the coil body is made of aluminum.
DE19782842999 1978-10-03 1978-10-03 Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former Withdrawn DE2842999A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782842999 DE2842999A1 (en) 1978-10-03 1978-10-03 Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782842999 DE2842999A1 (en) 1978-10-03 1978-10-03 Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former

Publications (1)

Publication Number Publication Date
DE2842999A1 true DE2842999A1 (en) 1980-04-24

Family

ID=6051207

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782842999 Withdrawn DE2842999A1 (en) 1978-10-03 1978-10-03 Heat-sinking system for loudspeaker - increases power output by using woven-copper centring membrane bonded to aluminium coil former

Country Status (1)

Country Link
DE (1) DE2842999A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3031568A1 (en) * 1980-08-21 1982-03-04 Braun Ag, 6000 Frankfurt Dynamic bass loudspeaker with removable permanent magnet - attached to mounting flange at back of loudspeaker cage
WO1991006191A1 (en) * 1989-10-20 1991-05-02 Charles David Lyth Improvements in or relating to loudspeakers
US5151943A (en) * 1990-11-13 1992-09-29 Mcintosh Laboratory, Inc. Low distortion dynamic loudspeaker
US5166982A (en) * 1981-02-18 1992-11-24 Ibuki Kogyo Co. Ltd. Horn speaker having a cooling device
US7016514B2 (en) 2001-02-03 2006-03-21 Kh Technology Corporation Loudspeaker assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3031568A1 (en) * 1980-08-21 1982-03-04 Braun Ag, 6000 Frankfurt Dynamic bass loudspeaker with removable permanent magnet - attached to mounting flange at back of loudspeaker cage
US5166982A (en) * 1981-02-18 1992-11-24 Ibuki Kogyo Co. Ltd. Horn speaker having a cooling device
WO1991006191A1 (en) * 1989-10-20 1991-05-02 Charles David Lyth Improvements in or relating to loudspeakers
US5475765A (en) * 1989-10-20 1995-12-12 Lyth; Charles D. Improvements in or relating to loudspeakers
US5151943A (en) * 1990-11-13 1992-09-29 Mcintosh Laboratory, Inc. Low distortion dynamic loudspeaker
US7016514B2 (en) 2001-02-03 2006-03-21 Kh Technology Corporation Loudspeaker assembly

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Legal Events

Date Code Title Description
OAM Search report available
OB Request for examination as to novelty
8139 Disposal/non-payment of the annual fee