EP2959696A2 - Verfahren zur versteifung der membran eines schallwandlers - Google Patents
Verfahren zur versteifung der membran eines schallwandlersInfo
- Publication number
- EP2959696A2 EP2959696A2 EP13826715.8A EP13826715A EP2959696A2 EP 2959696 A2 EP2959696 A2 EP 2959696A2 EP 13826715 A EP13826715 A EP 13826715A EP 2959696 A2 EP2959696 A2 EP 2959696A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- stiffening
- sound transducer
- membranes
- acoustic transducer
- 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.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 229920001225 polyester resin Polymers 0.000 claims abstract description 7
- 239000004645 polyester resin Substances 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 4
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract 2
- 229920003002 synthetic resin Polymers 0.000 claims abstract 2
- 239000000057 synthetic resin Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000271 Kevlar® Polymers 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004761 kevlar Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000004923 Acrylic lacquer Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- ADIMAYPTOBDMTL-UHFFFAOYSA-N oxazepam Chemical compound C12=CC(Cl)=CC=C2NC(=O)C(O)N=C1C1=CC=CC=C1 ADIMAYPTOBDMTL-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- -1 polyethylene naphthalate Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
-
- 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
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres
-
- 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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
-
- 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
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
Definitions
- the invention relates to a method for stiffening the membrane of a sound transducer and a diaphragm of a sound transducer.
- Electrodynamic loudspeaker ⁇ cher Conventional transducers, such as are used in speakers are also referred to as electrodynamic loudspeaker ⁇ cher.
- Electrodynamic ⁇ mix speaker or sound transducer comprises a magneti ⁇ ULTRASONIC DC field constituting permanent magnets or electromagnets ⁇ magnet in which a current-carrying voice coil is located. This voice coil is located on a swing ⁇ coil carrier of the movements of the voice coil on the
- Transducer diaphragm transmits, causing the diaphragm to vibrate.
- the aim of the present invention is therefore to achieve a higher level stability here by a novel process for stiffening the membranes.
- stiffening coatings are to be applied to the membrane ⁇ cone.
- the DE 7102857 U in turn provides a stiffening in particular in the region of the bead edge, which is coated on one side with a synthetic fiber nonwoven fabric. This can then be additionally laminated by a Kunststofffolie.
- the loudspeaker diaphragm ⁇ a base layer having a fabric of a polyethylene naphthalate fiber, the thermosetting resin and, where a if a thermoplastic resin layer and / or a thermoplastic elastomer is impregnated.
- the foamed resin ⁇ as well as optional third layer is a thermoplastic elastomer, for example, as a film or fabric.
- it is the object of the present ⁇ invention to provide a method for stiffening the diaphragm of a transducer provides that a stiffening of the diaphragm of a transducer also subsequently made ⁇ light, so that this method be applied as a post-treatment to improve the frequency range of existing loudspeaker can.
- the inventive method provides for this purpose a multi-step sequential treatment of a herkömmli ⁇ chen transducer membrane prior to by different Ma ⁇ terialien and their combination push the resonances of the membrane or of the sound transducer to a much greater range to ver ⁇ and to damp addition there, thereby consuming filtering as they are erfor ⁇ sary with conventional transducers, omitted.
- the thus achievable improved me- Mechanical strength causes the converted in ariessim ⁇ pulse electrical signal can be converted much more effectively into sound. In this way, when ei ⁇ ner lower supply a higher undistorted sound conversion can be achieved for electrical power.
- OF INVENTION ⁇ -making proper handling of the membrane also acts to protect the membranes against temperature and moisture, which is particularly necessary when used outdoors or even in the car ⁇ HiFi range.
- the membrane is approximately effects a total of me ⁇ mechanically resilient while protecting against Witte ⁇ .
- the inventive method achieves the effect of a multi-phase treatment of the membrane cone, which is made of a paper material in the standard case but may also consist of other material.
- Phase 1 hereby provides a mechanically stabili ⁇ sierendes braid on the front and or back of applying the membrane. This mesh can be made from this ver ⁇ different high mechanical load-bearing materials.
- the materials glass fiber, kevlar or carbon are only examples of possible usable materials that are supposed to positively influence the mechanics of the membrane.
- the membrane By connecting the membrane cone with these stiffening materials, the membrane is able to absorb the forces introduced by the electrical pulse tensile and compressive ⁇ forces.
- the question of whether the corresponding stiffening materials are applied in the form of a braid on the front and / or back side is dependent on of the material properties of the membrane as well as their size and their installation in the sound transducer.
- phase 2 the membrane pretreated in this way is now coated over its entire area with resin.
- This phase is divided into two parts in an advantageous embodiment of the invention, since a combination of resins of different viscosity causes here to ⁇ additional improvements.
- a first coating of Polyes ⁇ terharz creates a compound of the material of the membrane, such as paper, with the braid or the stiffening fibers and this polyester resin coating.
- a first intermediate stage is reached at which the Memb- ran is already significantly stiffened, but still resonances ⁇ zen exist.
- Phase 2 therefore provides a further increase in resin coating of the coated polyester resin membrane before ⁇ .
- an epoxy resin is provided, which has a significantly lower viscosity than polyester resin in its material properties.
- This second layer in this case enters into a penetrating connection with the polyester resin layer applied first and thus alters the surface structure of the membrane.
- phase 3 an acrylic lacquer coating is applied to the front and / or rear side, whereby the resonance peaks present after phase 3 can again be damped.
- This last phase causes also that the sound permeable ⁇ ness of such treated membranes is additionally damped and thus the transmission of sound is further improved.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012018765.3A DE102012018765B3 (de) | 2012-09-24 | 2012-09-24 | Verfahren zur Versteifung der Membran eines Schallwandlers |
PCT/DE2013/100328 WO2014044251A2 (de) | 2012-09-24 | 2013-09-13 | Verfahren zur versteifung der membran eines schallwandlers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2959696A2 true EP2959696A2 (de) | 2015-12-30 |
EP2959696B1 EP2959696B1 (de) | 2018-11-28 |
Family
ID=50029742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13826715.8A Not-in-force EP2959696B1 (de) | 2012-09-24 | 2013-09-13 | Verfahren zur versteifung der membran eines schallwandlers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2959696B1 (de) |
DE (1) | DE102012018765B3 (de) |
WO (1) | WO2014044251A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202015101129U1 (de) * | 2015-03-06 | 2016-06-08 | LEGIS GbR (vertretungsberechtigter Gesellschafter: Thomas C.O. Schmidt, 10707 Berlin) | Flachmembran mit harzgfüllten Löchern, Planarlautsprecher mit Flachmembran und Akustikeinheit mit einem derartigen Planarlautsprecher |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE965995C (de) | 1950-11-25 | 1957-07-04 | Dr Emil Podszus | Lautsprechermembran |
AT225768B (de) | 1960-02-17 | 1963-02-11 | Philips Nv | Verfahren zur Herstellung einer Lautsprechermembran |
DE7102857U (de) | 1971-01-26 | 1971-05-19 | Sel Ag | Lautsprechermembran |
DE2851745C2 (de) | 1978-11-30 | 1985-01-10 | Elektrotechnik Ehmann Gmbh, 6953 Gundelsheim | Mehrschichtige Membran für einen elektroakustischen Wandler |
GB8514189D0 (en) * | 1985-06-05 | 1985-07-10 | Reefgrade Ltd | Electro-mechanical transducer diaphragm |
JPS63196199A (ja) * | 1987-02-10 | 1988-08-15 | Matsushita Electric Ind Co Ltd | スピ−カ用振動板の製造方法 |
DE69427942T2 (de) * | 1993-06-28 | 2002-04-04 | Matsushita Electric Industrial Co., Ltd. | Membran-Sicke-integrierte Formkörper für Lautsprecher, akustische Wandler damit und Verfahren zu ihrer Herstellung |
EP1429582B1 (de) * | 2002-12-09 | 2013-01-16 | Onkyo Corporation | Lautsprechermembran sowie Verfahren zur Herstellung derselben |
JP4049179B2 (ja) * | 2005-05-25 | 2008-02-20 | オンキヨー株式会社 | スピーカー振動板およびスピーカー構造体 |
TWM290647U (en) * | 2005-11-02 | 2006-05-11 | Beston Technology Corp | A structure for ribbon speaker |
JP5417775B2 (ja) * | 2008-09-05 | 2014-02-19 | パナソニック株式会社 | スピーカ用の振動板の製造方法及びこの製造方法により製造したスピーカ用の振動板、このスピーカ用の振動板を用いたスピーカ、このスピーカを用いた電子機器及び移動体 |
JP2010130378A (ja) * | 2008-11-28 | 2010-06-10 | Panasonic Corp | スピーカ用振動板部材およびこれを用いたスピーカ用振動板とスピーカ用エッジならびにこれらを用いたスピーカ |
DE202010013175U1 (de) | 2010-12-14 | 2011-05-05 | DR. KURT MÜLLER GmbH & Co. KG | Lautsprechermembran |
DE202011100383U1 (de) * | 2011-05-06 | 2011-10-13 | Kolja Kuse | Lautsprecher aus faserbeschichteten Steinmaterialien |
-
2012
- 2012-09-24 DE DE102012018765.3A patent/DE102012018765B3/de not_active Expired - Fee Related
-
2013
- 2013-09-13 WO PCT/DE2013/100328 patent/WO2014044251A2/de active Application Filing
- 2013-09-13 EP EP13826715.8A patent/EP2959696B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2014044251A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014044251A3 (de) | 2014-05-22 |
WO2014044251A2 (de) | 2014-03-27 |
DE102012018765B3 (de) | 2014-02-20 |
EP2959696B1 (de) | 2018-11-28 |
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