EP0132781A1 - Process for the manufacture of a drone cone - Google Patents

Process for the manufacture of a drone cone Download PDF

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Publication number
EP0132781A1
EP0132781A1 EP84108483A EP84108483A EP0132781A1 EP 0132781 A1 EP0132781 A1 EP 0132781A1 EP 84108483 A EP84108483 A EP 84108483A EP 84108483 A EP84108483 A EP 84108483A EP 0132781 A1 EP0132781 A1 EP 0132781A1
Authority
EP
European Patent Office
Prior art keywords
manufacture
cone
protection cap
dust protection
diaphragm
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Withdrawn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
EP84108483A
Other languages
German (de)
French (fr)
Inventor
Kurt Leipold
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.)
Alcatel Lucent Deutschland AG
International Standard Electric Corp
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0132781A1 publication Critical patent/EP0132781A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Definitions

  • the invention relates to a method for producing a passive radiator.
  • Passive radiators are membrane-like arrangements, similar to a loudspeaker, but without a voice coil and without a drive for it, for example in the form of a permanent magnet system, in the air gap of which the voice coil is immersed.
  • Passive emitters are arranged in the baffles of loudspeaker boxes instead of loudspeakers and are also excited to vibrate by the air masses in the loudspeaker, which are set in vibration by loudspeakers.
  • the object on which the invention is based is to specify a method which makes it possible to produce a passive radiator in a simple manner and to easily adjust its moving mass to desired values.
  • This object is achieved in that a membrane is provided with a dust protection cap and that Volume between the dust protection cap and the rear membrane opening is filled with a hardening material.
  • passive radiators can be produced using existing loudspeaker membranes and their moving mass can be adjusted.
  • the passive radiator consists of a cone membrane 1 made of scooped paper, as is usually used in dynamic loudspeakers.
  • the cone membrane 1 is provided in a manner known per se with the bead edge 2, which also serves to fasten the passive radiator, and the dust protection cap 3.
  • the space 4 enclosed by the dust protection cap 3 and the cone 1 is filled with a plastic.
  • a filler which increases the weight such as mineral or metallic powder, metal body or the like, can be added.
  • a hot-melt adhesive was used as the material, which is sold by Jowat KG, Detmold under the trade name Jowatherm.

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

Abstract

A drone cone with a moving mass of precise dimensions is manufactured from a diaphragm as normally used for loudspeakers, for example a cone diaphragm 1, with a dust shield cap 3, in such a manner that the volume 4 between the dust shield cap 3 and the rear opening of the diaphragm is filled with a material that will set hard. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur HersteLLung eines PassivstrahLers.The invention relates to a method for producing a passive radiator.

Passivstrahler sind membranartige Anordnungen, ähnlich einem Lautsprecher, jedoch ohne eine Schwingspule und ohne einem Antrieb für diese, beispielsweise in der Gestalt eines Dauermagnetsystems, in deren Luftspalt die SchwingspuLe eintaucht. PassivstrahLer werden anstelle von Lautsprechern in den Schallwänden von Lautsprecherboxen angeordnet und durch das in der Lautsprecherbox vorhandene, durch Lautsprecher in Schwingungen versetzte Luftmassen ebenfalls zu Schwingungen angeregt.Passive radiators are membrane-like arrangements, similar to a loudspeaker, but without a voice coil and without a drive for it, for example in the form of a permanent magnet system, in the air gap of which the voice coil is immersed. Passive emitters are arranged in the baffles of loudspeaker boxes instead of loudspeakers and are also excited to vibrate by the air masses in the loudspeaker, which are set in vibration by loudspeakers.

Die der Erfindung zugrundeliegende Aufgabe besteht darin, ein Verfahren anzugeben, welches es gestattet, einen Passivstrahler auf einfache Weise herzustellen und seine bewegte Masse Leicht auf gewünschte Werte einzustellen.The object on which the invention is based is to specify a method which makes it possible to produce a passive radiator in a simple manner and to easily adjust its moving mass to desired values.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß eine Membran mit einer Staubschutzkalotte versehen und das VoLumen zwischen StaubschutzkaLotte und der rückwärtigen Membranöffnung mit einem aushärtenden Werkstoff gefüllt wird.This object is achieved in that a membrane is provided with a dust protection cap and that Volume between the dust protection cap and the rear membrane opening is filled with a hardening material.

Auf diese Weise können unter Verwendung vorhandener Lautsprechermembranen auf einfache Weise Passivstrahler hergestellt und deren bewegte Masse eingestellt werden.In this way, passive radiators can be produced using existing loudspeaker membranes and their moving mass can be adjusted.

Die Erfindung ist nachstehend anhand eines Ausführungsbeispieles erläutert, welches in der Figur dargestellt ist.The invention is explained below using an exemplary embodiment which is shown in the figure.

Der Passivstrahler gemäß Figur besteht aus einer Konusmembran 1 aus geschöpftem Papier, wie sie üblicherweise in dynamischen Lautsprechern verwendet werden. Die Konusmembarn 1 ist in an sich bekannter Weise mit dem Sickenrand 2, welcher auch der Befestigung des PassivstrahLers dienen soLL, und der Staubschutzkalotte 3 versehen. Der von der StaubschutzkaLotte 3 und dem Konus 1 umschlossene Raum 4 ist mit einem Kunststoff gefüllt.The passive radiator according to the figure consists of a cone membrane 1 made of scooped paper, as is usually used in dynamic loudspeakers. The cone membrane 1 is provided in a manner known per se with the bead edge 2, which also serves to fasten the passive radiator, and the dust protection cap 3. The space 4 enclosed by the dust protection cap 3 and the cone 1 is filled with a plastic.

Abhängig davon, aus welchem Werkstoff die Staubschutzkalotte 3 besteht und welcher Werkstoff zum FüLLen des Raumes 4 verwendet wird, kann es notwendig sein, die Staubschutzkalotte 3 mit einer diese abdichtenden Schicht zu überziehen. In jedem Fall aber ist es möglich, die bewegte Masse durch entsprechende Waht des den Raum 4 ausfüllenden Werkstoffes genau auf den gewünschten Wert einzustellen.Depending on the material from which the dust protection cap 3 is made and which material is used to fill the space 4, it may be necessary to cover the dust protection cap 3 with a layer that seals it. In any case, however, it is possible to set the moving mass precisely to the desired value by appropriate selection of the material filling the space 4.

Wenn das spezifische Gewicht des Werkstoffes selbst nicht ausreicht, dann kann ein das Gewicht erhöhender FüLLstoff, wie mineralisches oder metallisches PuLver, Metallkörper oder dgl., hinzugefügt werden.If the specific weight of the material itself is not sufficient, a filler which increases the weight, such as mineral or metallic powder, metal body or the like, can be added.

Bei einem Ausführungsbeispiel ist als Werkstoff ein Schmelzkleber verwendet worden, der von der Firma Jowat KG, Detmold unter der Warenbezeichnung Jowatherm vertrieben wird.In one embodiment, a hot-melt adhesive was used as the material, which is sold by Jowat KG, Detmold under the trade name Jowatherm.

Claims (2)

1. Verfahren zur HersteLLung eines Passivstrahlers, dadurch gekennzeichnet , daß eine Membran mit einer StaubschutzkaLotte versehen und das VoLumen zwischen StaubschutzkaLotte und der rückwärtigen Membranöffnung mit einem aushärtenden Werkstoff gefüllt ist.1. A process for the manufacture of a passive radiator, characterized in that a membrane is provided with a dust protection cap and the volume between the dust protection cap and the rear membrane opening is filled with a hardening material. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß dem Werkstoff ein gewichtserhöhender Füllstoff beigegeben wird.2. The method according to claim 1, characterized in that a weight-increasing filler is added to the material.
EP84108483A 1983-07-22 1984-07-18 Process for the manufacture of a drone cone Withdrawn EP0132781A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326446 1983-07-22
DE19833326446 DE3326446A1 (en) 1983-07-22 1983-07-22 METHOD FOR PRODUCING A PASSIVE RADIATOR

Publications (1)

Publication Number Publication Date
EP0132781A1 true EP0132781A1 (en) 1985-02-13

Family

ID=6204640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108483A Withdrawn EP0132781A1 (en) 1983-07-22 1984-07-18 Process for the manufacture of a drone cone

Country Status (3)

Country Link
EP (1) EP0132781A1 (en)
DE (1) DE3326446A1 (en)
DK (1) DK356184A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645216A2 (en) 2004-10-07 2006-04-12 Michael Kuhne Collapsible and transportable barbecue
US20100260371A1 (en) * 2009-04-10 2010-10-14 Immerz Inc. Systems and methods for acousto-haptic speakers
US10785551B2 (en) 2013-06-03 2020-09-22 Bose Corporation Portable loudspeaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863520A (en) * 1955-03-11 1958-12-09 Gen Dynamics Corp Loudspeaker cone rim treatment
US3777192A (en) * 1970-10-08 1973-12-04 Dynamics Corp Massa Div A method for adjusting the resonant frequency and motional electrical impedance of a vibrating diaphragm electroacoustic transducer
CA938561A (en) * 1972-08-14 1973-12-18 J. Prince Gilles Acoustic loading system
US4206832A (en) * 1979-01-17 1980-06-10 Yocum Thomas A Drone acoustical transducer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863520A (en) * 1955-03-11 1958-12-09 Gen Dynamics Corp Loudspeaker cone rim treatment
US3777192A (en) * 1970-10-08 1973-12-04 Dynamics Corp Massa Div A method for adjusting the resonant frequency and motional electrical impedance of a vibrating diaphragm electroacoustic transducer
CA938561A (en) * 1972-08-14 1973-12-18 J. Prince Gilles Acoustic loading system
US4206832A (en) * 1979-01-17 1980-06-10 Yocum Thomas A Drone acoustical transducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645216A2 (en) 2004-10-07 2006-04-12 Michael Kuhne Collapsible and transportable barbecue
US20100260371A1 (en) * 2009-04-10 2010-10-14 Immerz Inc. Systems and methods for acousto-haptic speakers
US9185492B2 (en) * 2009-04-10 2015-11-10 Immerz, Inc. Systems and methods for acousto-haptic speakers
US10785551B2 (en) 2013-06-03 2020-09-22 Bose Corporation Portable loudspeaker

Also Published As

Publication number Publication date
DK356184D0 (en) 1984-07-20
DK356184A (en) 1985-01-23
DE3326446A1 (en) 1985-01-31

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19851015

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LEIPOLD, KURT