EP2387256A1 - Method for manufacturing a loudspeaker membrane - Google Patents
Method for manufacturing a loudspeaker membrane Download PDFInfo
- Publication number
- EP2387256A1 EP2387256A1 EP10162809A EP10162809A EP2387256A1 EP 2387256 A1 EP2387256 A1 EP 2387256A1 EP 10162809 A EP10162809 A EP 10162809A EP 10162809 A EP10162809 A EP 10162809A EP 2387256 A1 EP2387256 A1 EP 2387256A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- honeycomb structure
- foam
- cover
- cover layer
- 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- Withdrawn
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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
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
-
- 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
Definitions
- the invention relates to a method for producing a loudspeaker membrane.
- loudspeaker membranes are known, each of which may be constructed differently and each have a different structure.
- loudspeaker membranes are also known, which have a flat honeycomb structure which is provided between two honeycomb structure in each case covering the surface covering layers.
- honeycomb structure are all planar structures to understand, which include honeycomb interiors between arbitrarily shaped webs.
- This honeycomb interiors could be designed as a honeycomb in the classical sense with Maiseckförmigem cross-section, but there are also a variety of other forms possible, eg. B. a star and / or spiral lattice structure.
- the object of the invention is to avoid the aforementioned disadvantages and to provide a method for producing a loudspeaker diaphragm with which an improved loudspeaker diaphragm can be produced.
- This object is achieved in that a flat honeycomb structure is filled with an automatically curing and / or deliberately curable foam and then the foam hardens or is cured. As a result, an internal stabilization of the honeycomb structure is achieved, so that no outer layers are more imperative.
- the bringing of the cover at the small distance from the honeycomb structure can be carried out in several stages, so that the foam has sufficient time after each reduction of the gap to distribute itself in adjacent and adjacent free spaces of the honeycomb structure.
- the honeycomb structure can be provided on at least one side with a covering layer designed in particular as a film, so that additional stabilization of the loudspeaker membrane and / or protection of both the honeycomb structure and the foam filling is provided.
- the honeycomb structure can be provided with a cover layer by arranging a cover layer formed in particular as a film between the mold and the honeycomb structure so that a back-side cover layer results in the case of usually concave shapes.
- the honeycomb structure may also be provided with a cover layer by arranging a cover layer, in particular formed as a film, between the cover and the honeycomb structure so that a front cover layer results in the case of usually concave shapes.
- At least one cover layer may have a structure for stiffening the cover layer and thus the membrane.
- a paper in particular "NOMEX®” paper, aluminum or plastic, such.
- polycarbonate existing honeycomb structure can be used, so that a low weight is given at the same time high stability.
- a foam consisting of polyol and isocyanate can be used.
- the mixing ratio may be 1: 1 or 100: 150, in particular 100: 125, and in particular the bulk density may be 0.062 g / cm 3 .
- the object underlying the invention is further achieved by a loudspeaker membrane with a flat honeycomb structure, in which the flat honeycomb structure is filled with an automatically hardening and / or deliberately curable foam, wherein the loudspeaker membrane can be produced in particular by one of the above-described inventive method.
- the honeycomb structure may be provided, at least on one side, with a covering layer designed in particular as a film, so that additional stabilization of the loudspeaker membrane and / or protection both the honeycomb structure and the foam filling is given.
- At least one cover layer may have a structure for stiffening the cover layer and thus the membrane.
- the honeycomb structure made of paper, in particular "NOMEX®” paper, aluminum or plastic, such as.
- polycarbonate As polycarbonate exist, so that a low weight is given at the same time high stability.
- the foam may consist of polyol and isocyanate.
- first embodiment of a method according to the invention for producing a speaker diaphragm is performed with a mold 1 and a correspondingly adapted cover 2.
- the mold 1 has a surface 3 and an outwardly obliquely ascending lateral edge, as in FIG Fig. 1 shown.
- Foam 5 is arranged centrally in this mold 1, and a honeycomb structure 6 is then brought onto the foam 5 from above (cf. Fig. 2 ).
- the amount of foam 5 for the filling of the honeycomb structure 6 is at least sufficiently large.
- the cover 2 is brought up to a distance from the surface 3 of the mold 1, which is about 0.2 mm greater than the height of the honeycomb structure 6, to the mold 1, whereby the foam 5 is laterally separated by the remaining gap distributed and the entire honeycomb structure 6 is filled with the foam 5 (see. Fig. 3 ).
- bringing the cover 2 up to the small distance from the honeycomb structure 6 can take place in several stages, so that the foam 5 has sufficient time, after each reduction of the gap, to distribute itself correspondingly into adjacent and adjacent free spaces of the honeycomb structure 6.
- the cover 2 may also be provided with a trained in particular as a film cover layer 7 prior to lowering, so that in the finished speaker membrane on both sides in each case a cover layer 7 for additional stabilization of and / or protection of both the honeycomb structure 6 and the filling is given from (cured) foam.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Lautsprechermembran.The invention relates to a method for producing a loudspeaker membrane.
Aus der Praxis sind derartige Lautsprechermembranen bekannt, die jeweils unterschiedlich konstruiert sein können und einen voneinander jeweils abweichenden Aufbau haben. Insoweit sind auch Lautsprechermembranen bekannt, die eine flächige Wabenstruktur aufweisen, die zwischen zwei die Wabenstruktur jeweils flächig verschließenden Deckschichten vorgesehen ist.From practice, such speaker membranes are known, each of which may be constructed differently and each have a different structure. In that regard, loudspeaker membranes are also known, which have a flat honeycomb structure which is provided between two honeycomb structure in each case covering the surface covering layers.
Unter Wabenstruktur sind alle flächigen Strukturen zu verstehen, welche zwischen beliebig geformten Stegen Wabeninnenräume einschließen. Dabei könne diese Wabeninnenräume als Wabe im klassischen Sinne mit sechseckförmigem Querschnitt ausgebildet sein, es sind aber auch verschiedenste andere Formen möglich, z. B. eine stern- und/oder spiralförmige Gitterstruktur.Under honeycomb structure are all planar structures to understand, which include honeycomb interiors between arbitrarily shaped webs. This honeycomb interiors could be designed as a honeycomb in the classical sense with sechseckförmigem cross-section, but there are also a variety of other forms possible, eg. B. a star and / or spiral lattice structure.
Nachteilig hierbei ist, dass lediglich eine begrenzte Steifigkeit durch die freien Wabeninnenräume erzielt wird und zudem zwingend Deckschichten erforderlich sind.The disadvantage here is that only a limited rigidity is achieved by the free honeycomb interior and also imperative topcoats are required.
Aufgabe der Erfindung ist es, die vorgenannten Nachteile zu vermeiden und ein Verfahren zur Herstellung einer Lautsprechermembran anzugeben, mit dem eine verbesserte Lautsprechermembran hergestellt werden kann.The object of the invention is to avoid the aforementioned disadvantages and to provide a method for producing a loudspeaker diaphragm with which an improved loudspeaker diaphragm can be produced.
Diese Aufgabe wird dadurch gelöst, dass eine flächige Wabenstruktur mit einem selbsttätig aushärtenden und/oder gezielt aushärtbaren Schaum gefüllt wird und anschließend der Schaum aushärtet bzw. ausgehärtet wird. Hierdurch wird eine innere Stabilisierung der Wabenstruktur erreicht, so dass keine Deckschichten mehr zwingend erforderlich sind.This object is achieved in that a flat honeycomb structure is filled with an automatically curing and / or deliberately curable foam and then the foam hardens or is cured. As a result, an internal stabilization of the honeycomb structure is achieved, so that no outer layers are more imperative.
Vorzugsweise kann das Füllen der Wabenstruktur mit dem Schaum folgende Schritte umfassen:
- eine für die Füllung der Wabenstruktur zumindest ausreichend groß bemessene Menge Schaum wird in einer Form, die eine Unterseite und insbesondere auch einen seitlichen Rand aufweist, angeordnet
- die Wabenstruktur wird von oben auf den Schaum gebracht
- eine Abdeckung wird bis auf einen Abstand von der Unterseite der Form, der ca. 0,2 mm größer ist als die Höhe der Wabenstruktur, an diese herangebracht, wodurch sich der Schaum durch den Spalt seitlich verteilt und die gesamte Wabenstruktur mit dem Schaum gefüllt wird.
- a quantity of foam, which is at least sufficiently large for the filling of the honeycomb structure, is arranged in a mold which has an underside and in particular also a lateral edge
- The honeycomb structure is placed on top of the foam from above
- a cover is brought up to a distance from the bottom of the mold which is about 0.2 mm greater than the height of the honeycomb structure, whereby the foam is distributed laterally through the gap and the entire honeycomb structure is filled with the foam ,
Dabei kann das Heranbringen der Abdeckung an den geringen Abstand von der Wabenstruktur mehrstufig erfolgen, so dass der Schaum nach jeder Verringerung des Spaltes ausreichend Zeit hat, sich entsprechend in angrenzende und benachbarte Freiräume der Wabenstruktur zu verteilen.In this case, the bringing of the cover at the small distance from the honeycomb structure can be carried out in several stages, so that the foam has sufficient time after each reduction of the gap to distribute itself in adjacent and adjacent free spaces of the honeycomb structure.
Auch kann das Füllen der Wabenstruktur mit dem Schaum folgende Schritte umfassen:
- die Wabenstruktur wird in einer Form, die eine Unterseite und insbesondere auch einen seitlichen Rand aufweist, angeordnet
- eine Abdeckung wird in einem geringen Abstand (ca. 0,2 mm) oberhalb der Wabenstruktur angeordnet, und
- und der Schaum wird in die Wabenstruktur eingebracht und verteilt sich durch den Spalt seitlich, so dass die gesamte Wabenstruktur mit dem Schaum gefüllt wird.
- the honeycomb structure is arranged in a mold which has a lower side and in particular also a lateral edge
- a cover is placed at a small distance (about 0.2 mm) above the honeycomb structure, and
- and the foam is introduced into the honeycomb structure and spreads laterally through the gap, so that the entire honeycomb structure is filled with the foam.
Vorteilhafterweise kann die Wabenstruktur zumindest auf einer Seite mit einer insbesondere als Folie ausgebildeten Deckschicht versehen sein oder werden, so dass eine zusätzliche Stabilisierung der Lautsprechermembran und/oder ein Schutz sowohl der Wabenstruktur als auch der Schaumfüllung gegeben ist.Advantageously, the honeycomb structure can be provided on at least one side with a covering layer designed in particular as a film, so that additional stabilization of the loudspeaker membrane and / or protection of both the honeycomb structure and the foam filling is provided.
Dazu kann die Wabenstruktur mit einer Deckschicht versehen werden, indem zwischen der Form und der Wabenstruktur eine insbesondere als Folie ausgebildete Deckschicht angeordnet wird, so dass bei üblicherweise konkaven Formen eine rückseitige Deckschicht resultiert.For this purpose, the honeycomb structure can be provided with a cover layer by arranging a cover layer formed in particular as a film between the mold and the honeycomb structure so that a back-side cover layer results in the case of usually concave shapes.
Auch kann die Wabenstruktur mit einer Deckschicht versehen sein, indem zwischen der Abdeckung und der Wabenstruktur eine insbesondere als Folie ausgebildete Deckschicht angeordnet wird, so dass bei üblicherweise konkaven Formen eine vorderseitige Deckschicht resultiert.The honeycomb structure may also be provided with a cover layer by arranging a cover layer, in particular formed as a film, between the cover and the honeycomb structure so that a front cover layer results in the case of usually concave shapes.
Dabei kann zumindest eine Deckschicht eine Struktur zur Versteifung der Deckschicht und damit der Membran aufweisen.In this case, at least one cover layer may have a structure for stiffening the cover layer and thus the membrane.
Vorzugsweise kann eine aus Papier, insbesondere "NOMEX®"-Papier, Aluminium oder Kunststoff, wie z. B. Polycarbonat, bestehende Wabenstruktur verwendet werden, so dass ein geringes Gewicht bei gleichzeitig hoher Stabilität gegeben ist.Preferably, a paper, in particular "NOMEX®" paper, aluminum or plastic, such. As polycarbonate, existing honeycomb structure can be used, so that a low weight is given at the same time high stability.
Erfindungsgemäß kann ein aus Polyol und Isocyanat bestehender Schaum verwendet werden. Dabei kann das Mischungsverhältnis 1:1 oder 100:150, insbesondere 100:125 sein und insbesondere die Rohdichte 0,062 g/cm3 betragen.According to the invention, a foam consisting of polyol and isocyanate can be used. The mixing ratio may be 1: 1 or 100: 150, in particular 100: 125, and in particular the bulk density may be 0.062 g / cm 3 .
Die der Erfindung zugrunde liegende Aufgabe wird weiterhin gelöst durch eine Lautsprechermembran mit einer flächigen Wabenstruktur, bei der die flächige Wabenstruktur mit einem selbsttätig aushärtenden und/oder gezielt aushärtbaren Schaum gefüllt ist, wobei die Lautsprechermembran insbesondere durch eines der vorstehend beschriebenen erfindungsgemäßen Verfahren hergestellt sein kann.The object underlying the invention is further achieved by a loudspeaker membrane with a flat honeycomb structure, in which the flat honeycomb structure is filled with an automatically hardening and / or deliberately curable foam, wherein the loudspeaker membrane can be produced in particular by one of the above-described inventive method.
Vorteilhafterweise kann die Wabenstruktur zumindest auf einer Seite mit einer insbesondere als Folie ausgebildeten Deckschicht versehen sein, so dass eine zusätzliche Stabilisierung der Lautsprechermembran und/oder ein Schutz sowohl der Wabenstruktur als auch der Schaumfüllung gegeben ist.Advantageously, the honeycomb structure may be provided, at least on one side, with a covering layer designed in particular as a film, so that additional stabilization of the loudspeaker membrane and / or protection both the honeycomb structure and the foam filling is given.
Dabei kann zumindest eine Deckschicht eine Struktur zur Versteifung der Deckschicht und damit der Membran aufweisen.In this case, at least one cover layer may have a structure for stiffening the cover layer and thus the membrane.
Erfindungsgemäß kann die Wabenstruktur aus Papier, insbesondere "NOMEX®"-Papier, Aluminium oder Kunststoff, wie z. B. Polycarbonat, bestehen, so dass ein geringes Gewicht bei gleichzeitig hoher Stabilität gegeben ist.According to the invention, the honeycomb structure made of paper, in particular "NOMEX®" paper, aluminum or plastic, such as. As polycarbonate exist, so that a low weight is given at the same time high stability.
Vorzugsweise kann der Schaum aus Polyol und Isocyanat bestehen.Preferably, the foam may consist of polyol and isocyanate.
Im Folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert. Es zeigen:
- Fig. 1 bis 3
- ein erstes Ausführungsbeispiel eines erfindungsgemäßen Verfahrens, und
- Fig. 4 bis 6
- ein zweites Ausführungsbeispiel eines erfindungsgemäßen Verfahrens
- Fig. 1 to 3
- a first embodiment of a method according to the invention, and
- 4 to 6
- A second embodiment of a method according to the invention
In allen Figuren werden für gleiche bzw. gleichartige Bauteile übereinstimmende Bezugszeichen verwendet.In all figures the same reference numerals are used for identical or similar components.
Das in den
In diese Form 1 wird mittig Schaum 5 angeordnet und eine Wabenstruktur 6 wird anschließend von oben auf den Schaum 5 gebracht (vgl.
Anschließend wird die Abdeckung 2 bis auf einen Abstand von der Fläche 3 der Form 1, der ca. 0,2 mm größer ist als die Höhe der Wabenstruktur 6, an die Form 1 herangebracht, wodurch sich der Schaum 5 durch den insoweit verbleibenden Spalt seitlich verteilt und die gesamte Wabenstruktur 6 mit dem Schaum 5 gefüllt wird (vgl.
Dabei kann das Heranbringen der Abdeckung 2 an den geringen Abstand von der Wabenstruktur 6 mehrstufig erfolgen, so dass der Schaum 5 nach jeder Verringerung des Spaltes ausreichend Zeit hat, sich entsprechend in angrenzende und benachbarte Freiräume der Wabenstruktur 6 zu verteilen.In this case, bringing the
Wie in den
Insoweit kann die Abdeckung 2 vor den Absenken ebenfalls mit einer insbesondere als Folie ausgebildeten Deckschicht 7 versehen sein, so dass bei der fertigen Lautsprechermembran auf beiden Seiten jeweils eine Deckschicht 7 zur zusätzliche Stabilisierung der und/oder zum Schutz sowohl der Wabenstruktur 6 als auch der Füllung aus (ausgehärtetem) Schaum gegeben ist.In that regard, the
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10162809A EP2387256A1 (en) | 2010-05-14 | 2010-05-14 | Method for manufacturing a loudspeaker membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10162809A EP2387256A1 (en) | 2010-05-14 | 2010-05-14 | Method for manufacturing a loudspeaker membrane |
Publications (1)
Publication Number | Publication Date |
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EP2387256A1 true EP2387256A1 (en) | 2011-11-16 |
Family
ID=42755063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10162809A Withdrawn EP2387256A1 (en) | 2010-05-14 | 2010-05-14 | Method for manufacturing a loudspeaker membrane |
Country Status (1)
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EP (1) | EP2387256A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106851519A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | The forming method of silica gel vibrating diaphragm and the silica gel vibrating diaphragm prepared using the method |
CN106851520A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | Silica gel vibrating diaphragm forming method and the silica gel vibrating diaphragm prepared using the method |
CN106851518A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm preparation method |
CN109803219A (en) * | 2018-12-28 | 2019-05-24 | 瑞声精密制造科技(常州)有限公司 | Vibrating diaphragm molding die |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1526201A (en) * | 1975-09-05 | 1978-09-27 | Strathearn Audio Ltd | Loudspeaker diaphragm |
JPS5474418A (en) * | 1977-11-25 | 1979-06-14 | Mitsubishi Electric Corp | Conical diaphragm of honey-comb construction for speaker |
JPS54133125A (en) * | 1978-04-06 | 1979-10-16 | Matsushita Electric Ind Co Ltd | Diaphragm for speaker |
JPS573499A (en) * | 1980-06-06 | 1982-01-08 | Mitsubishi Electric Corp | Diaphragm for speaker |
US4322583A (en) * | 1978-11-20 | 1982-03-30 | Sony Corporation | Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets |
DE3605102A1 (en) * | 1986-02-18 | 1987-08-20 | Ulrich Ranke | Process for producing dimensionally stable loudspeaker diaphragms |
-
2010
- 2010-05-14 EP EP10162809A patent/EP2387256A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1526201A (en) * | 1975-09-05 | 1978-09-27 | Strathearn Audio Ltd | Loudspeaker diaphragm |
JPS5474418A (en) * | 1977-11-25 | 1979-06-14 | Mitsubishi Electric Corp | Conical diaphragm of honey-comb construction for speaker |
JPS54133125A (en) * | 1978-04-06 | 1979-10-16 | Matsushita Electric Ind Co Ltd | Diaphragm for speaker |
US4322583A (en) * | 1978-11-20 | 1982-03-30 | Sony Corporation | Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets |
JPS573499A (en) * | 1980-06-06 | 1982-01-08 | Mitsubishi Electric Corp | Diaphragm for speaker |
DE3605102A1 (en) * | 1986-02-18 | 1987-08-20 | Ulrich Ranke | Process for producing dimensionally stable loudspeaker diaphragms |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106851519A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | The forming method of silica gel vibrating diaphragm and the silica gel vibrating diaphragm prepared using the method |
CN106851520A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | Silica gel vibrating diaphragm forming method and the silica gel vibrating diaphragm prepared using the method |
CN106851518A (en) * | 2016-12-06 | 2017-06-13 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm preparation method |
CN106851520B (en) * | 2016-12-06 | 2020-03-20 | 瑞声科技(新加坡)有限公司 | Silica gel vibrating diaphragm forming method and silica gel vibrating diaphragm prepared by method |
CN106851518B (en) * | 2016-12-06 | 2020-03-20 | 瑞声科技(新加坡)有限公司 | Method for manufacturing vibrating diaphragm |
CN106851519B (en) * | 2016-12-06 | 2020-05-29 | 瑞声科技(新加坡)有限公司 | Forming method of silica gel vibrating diaphragm and silica gel vibrating diaphragm prepared by adopting method |
CN109803219A (en) * | 2018-12-28 | 2019-05-24 | 瑞声精密制造科技(常州)有限公司 | Vibrating diaphragm molding die |
CN109803219B (en) * | 2018-12-28 | 2021-01-01 | 瑞声精密制造科技(常州)有限公司 | Vibrating diaphragm forming die |
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