WO2005085508A1 - 織編物、スピーカー用振動板及びスピーカー - Google Patents
織編物、スピーカー用振動板及びスピーカー Download PDFInfo
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- WO2005085508A1 WO2005085508A1 PCT/JP2005/003875 JP2005003875W WO2005085508A1 WO 2005085508 A1 WO2005085508 A1 WO 2005085508A1 JP 2005003875 W JP2005003875 W JP 2005003875W WO 2005085508 A1 WO2005085508 A1 WO 2005085508A1
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- WIPO (PCT)
- Prior art keywords
- woven
- speaker
- diaphragm
- knitted fabric
- coil
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/533—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads antistatic; electrically conductive
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0088—Fabrics having an electronic function
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/25—Metal
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D21/00—Lappet- or swivel-woven fabrics
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- 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
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
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- 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
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- 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
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/16—Physical properties antistatic; conductive
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/024—Fabric incorporating additional compounds
- D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
- D10B2403/02431—Fabric incorporating additional compounds enhancing functional properties with electronic components, e.g. sensors or switches
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
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- 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
- H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3382—Including a free metal or alloy constituent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/40—Knit fabric [i.e., knit strand or strip material]
- Y10T442/475—Including a free metal or alloy constituent
Definitions
- the present invention relates to a woven or knitted fabric, a speaker diaphragm, and a speaker.
- a conventional flat speaker includes a bar-shaped magnet and a diaphragm on which a coil is formed.
- an alternating current is applied to each of the coils to vibrate the diaphragm, whereby an electric signal can be converted into an acoustic signal.
- a speaker diaphragm mounted on such a speaker there is known a diaphragm formed by printing a coil on a diaphragm such as a knob, a thermoplastic resin film, or FRP (fiber reinforced plastic). (See Patent Documents 1 and 2).
- Patent Document 1 discloses a planar acoustic transducer in which a magnet, a coil, and a vibrating membrane have specific configurations.
- the coil on the diaphragm is formed by first forming a copper thin film on a polymer film such as polyimide or polyethylene by lamination or vapor deposition, and then forming the copper thin film on the flat surface. It is created by etching so that the shape becomes spiral.
- Patent Document 2 discloses a coil-integrated diaphragm in which a coil and a wiring having a plurality of divided current paths are formed on the surface of the diaphragm.
- a photoresist of a coil pattern is formed by a photolithography method such as an acrylic film or an imide film, and then an electroless copper plating process and photolithography are performed. It is formed by stripping the resist and performing electrolytic copper sulfate plating.
- thermoplastic synthetic fiber made of a low-melting polymer and a non-conductive fiber are wound around a conductive yarn, or a woven fabric is woven as a weft using a twisted yarn.
- a method for producing a current-carrying woven fabric that melts only thermoplastic synthetic fibers that also have a low-melting-point polymer power by heating at a low temperature is disclosed.
- the current-carrying woven fabric disclosed in this method uses conductive yarns for all of the wefts, and heats or keeps heat by energization, or wovens yarns containing metal fibers. It prevents static charge on carpets and clothing.
- Patent Document 4 discloses that a part of a warp and a weft is replaced by a metal wire, and the metal wire is woven so as to be in contact at a crossing portion.
- a possible glass fiber fabric is disclosed.
- the glass fiber woven fabric disclosed herein is one in which metal wires woven into the woven fabric cross each other and contact each other, and do not form an S coil shape in the woven fabric.
- Patent Document 5 discloses a woven fabric in which a metal wire having a high thermal conductivity is woven together with animal and plant fibers and Z or chemical fibers.
- the woven fabric disclosed herein efficiently heats or cools a metal wire to a high or low temperature by heat conduction, and transmits a heating temperature or a cooling temperature of the metal wire to a part or the whole of clothing. It heats or cools a part or the whole of the human body, and the metal wire does not form a coil shape in the woven fabric.
- Patent Document 6 discloses a system in which a plurality of electrode members are arranged to detect the presence or absence of an object.
- the electrode members partially woven or woven conductive fibers in a base material.
- An electrode material for an object's human detection system is disclosed.
- the woven or knitted fabric disclosed herein is an electrode material used in a system for detecting an object or a human body, and the conductive fibers do not form a coil shape in the woven or knitted fabric.
- the woven or knitted fabric disclosed in Patent Documents 3 to 6 is used for heating or keeping heat, for preventing electrostatic charge, for a laminate for a multilayer wiring board, for an electrode material, and the like. It cannot be used as a speaker diaphragm.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-152378
- Patent Document 2 JP 2003-299184 A
- Patent Document 3 Japanese Patent Laid-Open No. 50-83561
- Patent Document 4 JP-A-8-922841
- Patent Document 5 Japanese Patent Application Laid-Open No. 2000-199140
- Patent Document 6 JP-A-2000-219076
- the present invention particularly relates to a woven or knitted fabric containing a conductive fiber, which can be suitably used as a loudspeaker diaphragm, a loudspeaker diaphragm using the woven or knitted fabric, and a speaker. It is intended to provide.
- the present invention is a woven or knitted fabric comprising a conductive fiber and a non-conductive fiber, wherein the woven or knitted fabric is constituted by a woven or knitted structure comprising the non-conductive fiber and the conductive fiber. And a continuous wiring having a coil formed thereon.
- the coil is preferably formed in a woven structure or a knitted structure by a method of weaving conductive fibers with a loom or a method of knitting with a knitting machine.
- At least a part of the non-conductive fiber is a fused yarn.
- the conductive fibers are preferably copper wires.
- the present invention is also a diaphragm for a speaker, which also has the above-mentioned woven and knitted fabric force.
- the present invention is also a speaker including the above-mentioned speaker diaphragm. It is preferable that the speaker further includes a cushioning material between the speaker diaphragm and the magnet.
- the speaker 1 is preferably an interior material for a room or an automobile.
- the present invention is also a noise control system using the above speaker.
- the present invention is also a voice guidance system using the above speaker.
- the present invention is also a display provided with voice guidance using the speaker.
- the woven or knitted fabric of the present invention comprises a woven or knitted structure made of non-conductive fibers, and continuous wiring forming a coil constituted by conductive fibers.
- a woven or knitted structure made of non-conductive fibers, and continuous wiring forming a coil constituted by conductive fibers.
- it can be suitably used as a diaphragm for a speaker.
- the woven or knitted fabric of the present invention also has a coil formed by conductive fibers and a woven or knitting structure formed by non-conductive fibers.
- a conventional speaker diaphragm is formed by printing on a substrate of the diaphragm using a method such as etching or metal plating. For this reason, there is a problem that a complicated process is required to form the coil on the diaphragm, and the manufacturing cost is increased.
- the woven or knitted fabric of the present invention can be easily produced by, for example, using conductive fibers or non-conductive fibers, weaving these with a loom, knitting with a knitting machine, or the like. is there. Therefore, the speaker diaphragm can be manufactured by a simpler method than the conventional manufacturing method of forming a coil by printing, and as a result, the manufacturing cost can be reduced.
- the woven or knitted fabric of the present invention is composed of a coil formed of conductive fibers and a woven or knitted structure formed of non-conductive fibers, and therefore has low durability against bending and bending. Is also excellent. Therefore, it is possible to transport the product in a roll during transportation, and it is possible to reduce the transportation cost as compared with the conventional one.
- the woven or knitted fabric of the present invention can be applied as a speaker diaphragm requiring such a shape because of its thin shape.
- it can be suitably used as a diaphragm for a flat speaker, and can be used in a flat display of a mobile phone or a television.
- the speaker diaphragm is a fabric
- the interior uses such as table cloth, pillow cover, cushion, massage sheet, roll curtain, scroll, and other interior materials for automobiles, It can also be used for the purpose of giving the function as a speaker to the etc.
- the display with an audio guide for example, a guide plate for a traffic guide, a tourist guide, a street sign, and the like; a display for explanation at an exhibition, a presentation, and the like.
- a guide plate can be mounted on a pillar-shaped pillar or the like, and can emit sound in a 360 ° direction.
- a speaker for voice guidance for guiding visitors at the time of an event or the like since installation and removal are easy, as a speaker for voice guidance for guiding visitors at the time of an event or the like, it can be used in a station yard, in a station concourse, on a road, a telephone pole, an outer wall, or the like. Can also be installed. When used in such applications, the speaker installation space is almost unnecessary, so it can be installed without problems even in extremely narrow places by attaching it to a wall or pillar. Furthermore, it can be easily installed at the required location when the event is held and removed when the event is over, which is convenient. For this reason, the above speaker can be suitably used for a voice guidance system.
- the above speaker 1 can also be used for a noise control system.
- the above noise control system prevents noise from external force, but, unlike soundproofing materials that cannot suppress noise and vibration generated inside, it suppresses noise by emitting noise whose phase is opposite to that of noise.
- the speaker 1 of the present invention can be easily installed on a vehicle seat, a soundproof wall of an expressway, a factory wall, or the like, it can be suitably used as the speaker in the noise control system.
- the speaker 1 is a flat surface, it can be easily installed on a soundproof wall or a factory wall, and since it is a fabric, it can be used as an interior material for a vehicle such as a vehicle seat. It is preferable in that respect.
- the woven or knitted fabric of the present invention has a smaller size and a smaller thickness than a conventional diaphragm and coil. In addition, since the durability is improved as compared with the film etched, the coil is less likely to be cut.
- the woven structure made of non-conductive fibers is not particularly limited, and examples thereof include plain weave, twill weave, satin weave, and ones to which each weave is applied. Twill weave is preferable because it can easily increase the weaving density. Further, it may be a single woven fabric or a multiple woven fabric such as a double woven fabric. Further, the knitting structure having non-conductive fiber strength is not particularly limited, and examples thereof include weft knitting, warp knitting, lace knitting, and knitting applied to each knitting method. Easily formed by weaving conductive fibers However, a woven fabric is preferable to a knitted fabric because it is easy to obtain a thin and smooth structure and is suitable for performing a function as a diaphragm.
- the non-conductive fiber is an insulating fiber other than the conductive fiber, and is not particularly limited as long as it is used as a fiber material of the woven or knitted fabric.
- Polyester fiber represented by polyalkylene terephthalate; polyamide fiber such as nylon 6, 66, 46; aromatic polyamide fiber represented by copolymer with paraphenylene terephthalamide and aromatic ether (aramide fiber); Polyparaphenylene-benzobenzoxazole; wholly aromatic polyester fibers (polyarylate fibers); vinylon fibers; polyolefin fibers such as rayon fibers and ultra-high molecular weight polyethylene; sulfone fibers such as polyoxymethylene fibers, paraffin-lensulfone and polysulfone; Ether ether ketone fiber; polyetherimide fiber It can be exemplified synthetic fibers such as polyimide fibers, chemical fibers such as Les fourteen, cotton, silk, natural fibers such as wool,
- inorganic fibers such as glass fibers and ceramic fibers may be used alone or in combination.
- polyester multifilaments are preferred in terms of lightness, heat resistance, durability, compactness, and cost. These may be used alone or in combination of two or more.
- the non-conductive fiber may be a single yarn or two or more aligned yarns.
- a filament is preferable in terms of sound quality.
- the polyester multifilament preferably has a total fineness lower limit of 33 dtex and an upper limit of lOOOOdt ex. If it is less than 33dtex, the sound that the copper wire is well balanced tends to sound. Beyond lOOOdtex, the copper wire becomes well balanced, becomes thicker, heavier, and vibrates.
- the total fineness is preferably a lower limit of 100 dtex and an upper limit of 400 dtex, more preferably a lower limit of 100 dtex and an upper limit of 600 dtex.
- the single yarn weave has a lower limit of ldtex and an upper limit of 33 dtex.
- the lower limit is more preferably ldtex, and the upper limit is more preferably lOdtex. Since a smooth surface is more likely to fulfill the function as a diaphragm, twin yarns are preferred over single yarns. Also, twin yarns combining upper and lower twists are preferred.
- the non-conductive fiber is a fused yarn.
- the conductive fiber can be firmly fixed in the woven or knitted fabric.
- the fused yarn may be used as a warp, a weft, or both a warp and a weft. Further, the fusion yarn is more preferably used for both the warp and the weft.
- the fused yarn is preferably a core-sheath composite filament yarn.
- the core-sheath type composite filament yarn is not particularly limited as long as it is conventionally used as a core-sheath type fusion yarn, but the conductive fiber can be used in a woven or knitted fabric.
- the core component is preferably made of polyethylene terephthalate, and the sheath component is made of a polyester resin having a low melting point, from the viewpoint of being able to be firmly fixed and being excellent in dimensional stability and shape retention when forming the material.
- the low-melting polyester it is preferable to use a copolymer polyester obtained by copolymerizing polyethylene terephthalate with isophthalic acid. It is preferable to use a low melting polyester having a melting point difference of at least 30 ° C from the melting point of polyethylene terephthalate (usually 260 ° C). The melting point of the copolymerized polyester is 130-210 ° C.
- the bonding ratio of the core-sheath component of the core-sheath type composite filament yarn is preferably 6: 4-2: 8, and particularly preferably 5: 5-3: 7. If the sheath component force is less than 0%, the adhesiveness when performing molding and bonding using this material may decrease, and if it exceeds 80%, the core component decreases, resulting in a decrease in the tension of the material. There is.
- the core-sheath type composite filament yarn preferably has a single fiber fineness of 1 to 33 dtex and a number of filaments of about 10 to 30 in order to obtain appropriate strength and moldability.
- the core-sheath type composite filament yarn is preferably used as long fibers in order to maintain strength and obtain dustproofness.
- the woven or knitted fabric of the present invention using the core-sheath type composite filament yarn is obtained by subjecting the woven or knitted fabric to heat treatment and then fusing the low melting polyester by melting.
- the ratio of the number of the core-sheath type composite filament yarns to the number of the non-conductive fibers other than the core-sheath type composite filament yarns is 1 0: 1-1: 10 is preferred! / ,.
- the heat treatment is preferably performed at a temperature higher than the melting point of the low melting point component of the sheath of the composite filament yarn by 10 ° C or more, more preferably by 15 ° C or more, and at a temperature lower than the melting point of polyethylene terephthalate. .
- the non-conductive fiber it is preferable to use a non-conductive fiber having a low dry heat shrinkage since the dry heat shrinkage of the metal wire used as the conductive fiber is almost zero.
- a non-conductive fiber that shows a low dry heat shrinkage it does not shrink extremely during processing such as weaving, dyeing, etc. Can be enhanced.
- the above dry heat shrinkage is measured based on JIS L 1013 8.8.18.2 Filament shrinkage (method B). Specifically, it is preferable that the non-conductive fiber has a dry heat shrinkage of about 3% or less at 150 ° C.
- non-conductive fibers exhibiting a low dry heat shrinkage examples include non-conductive fibers heat-set by a heat roll or the like.
- the method of heat setting is not particularly limited, and examples thereof include a method of performing a moist heat treatment under a high pressure at 100 to 130 ° C., for example, a method of putting into a steam setter or performing a treatment with boiling water.
- a method for improving dimensional stability for example, a method using false twisted yarn can be cited.
- At least a part of the non-conductive fiber may be a high tension yarn or a low tension yarn.
- Specific examples of the high-tensile yarn include aramide fibers.
- Specific examples of the low tension yarn include silk and the like.
- the use of a high-tensile yarn can produce a good bass sound, and the use of a low-tensile yarn can produce a good bass sound. Based on these findings, the speaker performance can be adjusted according to the functions required of the speaker. Therefore, these properties may be appropriately selected according to the purpose of use.
- Examples of the conductive fibers include metal wires such as copper, iron, gold, silver, and alloys. Among them, sufficient flexibility and conductivity can be obtained, and the cost is low. From the viewpoint, copper wire is preferred. Among them, a copper wire coated with an alloy of copper and silver is preferable. If the copper wire is coated with the above alloy of copper and silver, even if it has a relatively small diameter of 0.05 mm, etc. It is easy to provide a desired strength by bonding or the like. In addition, by increasing the twist as described above, floating of the metal wire occurs in the woven or knitted fabric, which is preferable.
- the conductive fiber may be either a monofilament or a multifilament.
- these may be coated conductive fibers coated with an organic substance. It is preferable to use the coated conductive fiber because it can prevent electric leakage and the like. Further, contrary to the above-mentioned coated conductive fiber, a fiber obtained by plating an organic substance such as polyester with a metal may be used.
- the lower limit of the diameter of the coated conductive fiber is preferably 0.04 mm, and the upper limit is preferably 0.35 mm, from the viewpoint of the weaving ease.
- the lower limit of the diameter of the metal wire in the coated conductive fiber is preferably 0.025 mm, and the upper limit thereof is preferably 0.30 mm.
- coated conductive fiber examples include, for example, Kuramo magnet wire, 1IMW-SN 0.1 mm, 1PEW-N 0.1 mm manufactured by Kuramo Electric Works.
- two or more of the coated conductive fibers may be used together.
- the coated conductive fiber is preferably formed by twisting two or more fibers coated with a resin such as polyester, polyamide, or polyurethane. preferable.
- the number of twists is preferably 50 to 1000 TZM in order to maintain the convergence of the coated conductive fiber.
- a plurality of coated conductive fibers When a plurality of coated conductive fibers are used, it is preferable that a plurality of the coated conductive fibers take in and converge around the center coated conductive fiber as shown in FIG. For example, it is preferable that seven coated conductive fibers are converged and twisted by 50 to 1000 TZM. As shown in FIG. 1, it is more preferable to use a combination of seven coated conductive fibers, which are converged, and two more.
- a plurality of fibers having a small diameter are plied to each other, so that they are likely to have flexibility. Therefore, they are preferable in terms of strength and weaving properties. Also, as mentioned above, one fiber Even if it is cut, it can be made to be highly flexible even when it is passed through electricity or immediately made into a fabric, so that it is possible to obtain excellent sound quality and volume and to have excellent durability immediately .
- the conductive fibers be made of a material having a volume resistivity at 20 ° C. of 100 ⁇ 'cm or less.
- Good Ri preferably not more than 10- 2 ⁇ 'cm.
- the volume resistivity of copper is 10- 8 ⁇ 'cm.
- the woven or knitted fabric is composed of a woven or knitted structure made of the non-conductive fiber and continuous wiring forming a coil made of the conductive fiber.
- the coil shape formed by the conductive fibers refers to a continuous shape capable of generating a function as a speaker diaphragm by flowing an electric signal. For example, the shape shown in FIG. 2-8 is used. Can be mentioned.
- the woven or knitted fabric of the present invention is a woven fabric 11 using the non-conductive fiber 12 as a warp and the non-conductive fiber 12 and the conductive fiber 13 as a weft.
- the continuous wiring forming a coil constituted by the conductive fiber means that the conductive fiber is continuously connected and has a repeating coil shape of the same pattern.
- the coil shape is, for example, a shape as shown in FIG. That is, in the example shown in FIG.
- the above-mentioned coil shape means that the conductive fibers 13 are oriented to the vicinity of the right end while forming a part of the weaving structure substantially parallel to the weft yarn near the left end, and have a constant width
- the pattern is formed by repeating a pattern in which a part of the weaving structure is formed substantially parallel to the right weft near the right end and oriented toward the left end.
- a polygonal spiral shape as shown in FIG. 4 a circular spiral shape as shown in FIG. 5, and a plurality of spiral shapes as shown in FIG. 8 are continuously combined. And the like.
- the woven or knitted fabric of the present invention is a woven fabric using the non-conductive fiber and the conductive fiber as a warp and the non-conductive fiber as a weft, similarly, as a part of the warp,
- the woven conductive fibers have the above-mentioned coil shape.
- the coil shape is such that conductive fibers are woven so as to form a part of a woven structure, It may be formed by knitting the conductive fiber so as to form a part of the knitting structure, or may be formed by another method.
- a weaving machine for weaving a continuous coil includes a ribbon weaving machine and a fly weaving machine.
- the material include a conductive fiber such as copper taken along a bobbin so that the conductive fiber such as copper is not twisted by a shuttle or the like.
- the coil shape is formed by weaving conductive fibers so as to form a part of a woven structure
- the conductive fibers are firmly fixed in the woven fabric.
- the coil shape is formed by weaving conductive fibers so as to form a part of a woven structure
- the coil shape is formed by a satin or twill weave structure.
- conductive fibers such as copper are exposed only on one side of the woven fabric, and the conductive fibers in the woven fabric are straightened and stretched. Therefore, when such a woven fabric is used as a diaphragm for a speaker, the conductive fiber in the coil shape is not too soft and vibrates well, so that the function can be suitably exerted. Can be emitted, and the sound range can be widened.
- a commonly used loom or knitting machine may be used to weave conductive fibers so that the coil shape forms a part of a woven structure. Knitting can be made by weaving conductive fibers so as to form part of the tissue.
- a method of attaching a coil with an adhesive for example, after weaving a woven fabric or knitting a knitted fabric, a method of attaching a coil with an adhesive, or after weaving a woven fabric or knitting a knitted fabric, Examples of the method include attaching a film and further attaching a coil.
- the woven or knitted fabric of the present invention also includes a woven or knitted fabric prepared using non-conductive fibers and a coil formed using conductive fibers attached thereto.
- the woven or knitted fabric of the present invention may be a resin-coated one.
- the woven or knitted product is a resin coating
- the woven or knitted material prepared by the above-described method can be prepared by resin coating.
- the coating material used for the resin coating is not particularly limited, and examples thereof include urethane resin.
- the woven or knitted fabric When the woven or knitted fabric is used as a speaker diaphragm, continuous wiring (coil shape) forming a coil constituted by the conductive fiber in the woven or knitted fabric is used for speaker vibration. It can function suitably as a coil in a plate. Therefore, the woven or knitted fabric of the present invention obtained by forming the above-described coil shape with the conductive fiber becomes a diaphragm having the same function as a conventional diaphragm for a planar speaker in which a coil is formed by printing.
- the cross-sectional shape of the conductive fiber is not particularly limited, but the fiber diameter has a lower limit of 0 from the viewpoint of vibrating well as a speaker coil. It is preferably 0.3 mm and the upper limit is 0.3 mm. If it is less than 0.03 mm, the volume of the speaker may decrease. If it exceeds 0.3 mm, it may be difficult to weave the woven or knitted fabric if the woven or knitted fabric is woven with conductive fibers. In addition, there is a risk of leaving traces when folded.
- the lower limit is more preferably 0.05 mm, and still more preferably 0.07 mm.
- the upper limit is more preferably 0.2 mm, and even more preferably 0.15 mm.
- the continuous wiring forming the coil made of the conductive fiber has a shape capable of functioning as a speaker coil.
- ! / ⁇ is not particularly limited, and should be determined as appropriate.
- It is preferably Z2 or less. More preferably, it is 1Z5 or less, and further preferably, it is 1Z20 or less. If it exceeds 1Z2, there is a danger that adjacent conductive fibers will come into contact with each other at the time of disconnection.
- the conductive fibers and the non-conductive fibers as the warp, and The same applies to a fabric woven using the non-conductive fiber.
- the weight of the woven or knitted fabric of the present invention is preferably from 50 to 800 gZm 2 , more preferably from 100 to 500 gZm 2 , and still more preferably from 150 to 400 gZm 2 . If it is too large, the volume and sound quality may decrease when used as a speaker diaphragm.
- the woven or knitted fabric of the present invention is a resin-coated one, the above-mentioned basis weight is a value after the resin coating.
- the woven or knitted fabric can be suitably used as a speaker diaphragm as described above.
- a speaker diaphragm made of the woven or knitted fabric is also one of the present invention.
- the woven or knitted fabric can be expected to be used as a circuit pattern.
- the speaker diaphragm can be suitably used as a speaker, for example, by being used with a bar-shaped magnet or the like.
- a speaker having such a speaker diaphragm is also one aspect of the present invention.
- the loudspeaker of the present invention can have the same configuration as a conventionally known loudspeaker, except that the above-described woven or knitted fabric is used as the diaphragm for the loudspeaker. It can be.
- FIG. 3-8 shows an example of the speaker of the present invention.
- the speaker 21 shown in FIG. 3 has a plurality of bar-shaped magnets 23 arranged in parallel on a jok 22, a cloth 25 as a cushioning material, and a magnet 23 parallel to the pole face of the bar-shaped magnet 23.
- the vibration plate 24 (the woven or knitted fabric described above) on which the provided coils are formed is laminated in this order.
- the bar-shaped magnet 23 is arranged on the yoke 22 in the order of S pole, N pole, and S pole.
- the start and end of the conductive fiber are used as electrodes, and by passing a current through the coil, the diaphragm 24 on which the coil is formed is vibrated in a direction perpendicular to the surface of the diaphragm, thereby converting the electric signal into an acoustic signal. Can be converted.
- the above-mentioned speaker 21, amplifier (amplifier), headphones and other sound sources and power can be operated as speakers.
- each layer of the speaker 21 in which the yoke 22, the rod-shaped magnet 23, the cloth 25, and the diaphragm 24 on which the coil is formed are laminated in this order, the respective layers are fixed.
- the method can be used without any particular limitation as long as it can be performed.
- it can be fixed using a screw, an adhesive, or the like.
- Screws are preferable.
- the yoke 22 may have the same shape as the speaker. However, as in the case of the speaker 21 shown in FIG. They may be used side by side while being provided. This is preferable in that the speaker 21 can be lightweight and easily wound when used as a screen.
- the interval between the yokes 22 is preferably 0.5 to 10 mm. , 2-4 mm is particularly preferred. This separation force is suitable for winding into a roll.
- the yoke 22 should be used in a size such that one yoke 22 is provided for each cycle of the coil shape, like the speaker 21 shown in FIG. However, it is preferable in that the above effects can be obtained most efficiently.
- the base material used as the yoke 22 for example, an iron plate, a plastic, duralumin, or the like can be used.
- an iron plate is preferable because the magnetic force does not escape downward.
- the yoke is usually used to prevent the magnetic force from being lost, but when it is not necessary to produce a large volume, a material that releases the magnetic force can be used as the protective member (yoke).
- plastic or duralumin for the purpose of weight reduction.
- Such a material that escapes magnetic force becomes a magnet, so it can be attached to magnetic materials, and is easy to use as a general-purpose speed.
- the bar-shaped magnets 23 may be used by arranging magnets smaller than the used force. When a small magnet is used, the speaker can be lightened.
- the material of the magnet to be used is not particularly limited, and conventionally known materials can be used, and examples thereof include alnico, ferrite, rare earth, and rare earth iron. Of these, a rubber-molded rare earth iron powder is preferred because of its lightness, thinness, and strong magnetic force.
- the rod-shaped magnets 23 are arranged on the four yokes 22 in the order of S pole, N pole, and S pole. May be installed in this order.
- the rod-shaped magnet 23 of the conductive fibers having the coil shape is used. It is most preferable that the portion in the direction parallel to the direction is located on the boundary between the S pole and the N pole because it theoretically vibrates uniformly. However, if the position is actually on the above boundary, the coil will be displaced by the vibration of the speaker, and will vibrate unevenly, and sound will be produced. For this reason, it is preferable that the portion parallel to the coil-shaped rod-shaped magnet 23 is slightly displaced from the boundary. In addition, since magnetic force flows from the N pole to the S pole, it is preferable to shift to the S pole side instead of the N pole side as shown in FIG. Thereby, it can serve as a diaphragm that vibrates uniformly even if it is displaced.
- the width of the portion parallel to the coil-shaped rod-shaped magnet 23 in the direction parallel to the S pole is preferably 0.1 to 1. Omm, more preferably 0.4 to 0.6 mm. Is particularly preferred.
- the coil may be displaced. 1. If it exceeds Omm, vibration may not be even and noise may be heard.
- the cloth 25 provided between the rod-shaped magnet 23 and the diaphragm 24 on which the coil is formed for example, a woven cloth, a nonwoven cloth, a knitted cloth, or the like can be given.
- the cloth is preferably a non-woven fabric that is softer. Further, it is preferable that the thickness is thicker to absorb vibration. Is not particularly restricted but includes non-woven fabric, it is preferred basis weight is 10- lOOgZm 2.
- loose paper may be provided. By providing cloth, paper, etc., a slight space is created between the rod-shaped magnet 23 and the diaphragm 24 on which the coil is formed, so that vibration can be easily transmitted and a large volume can be obtained. The occurrence can be prevented.
- the speaker 21 shown in Fig. 4 has a magnet 23, a cloth 25 as a cushioning material, and a diaphragm 24 on which a coil formed in a spiral shape is formed on a yoke 22 in this order. It is.
- the magnet 23 preferably has a size enough to cover the outer periphery of the coil.
- the directions of the N pole and the S pole of the magnet 23 are not particularly limited, but it is preferable that the magnet 23 be installed so that electricity flows.
- the speaker 21 shown in FIG. 5 includes a yoke 22, a cylindrical magnet 23, a cloth 25 as a cushioning material, and a diaphragm 24 having a circular coil formed in this order. It is made by laminating.
- the speaker 21 shown in FIG. 8 has a magnet 23 having a shape corresponding to a coil on a yoke 22, a cloth 25 as a cushioning material, and a vibration in which coils formed in a triangle and a square are formed.
- the plates 24 are laminated in this order.
- the magnet 23 may have a shape corresponding to the coil, and may be a magnet having a size enough to cover the entire force coil.
- the speaker 1 of the present invention uses the above-described woven or knitted fabric, the number of copper wires, the density, and the like can be easily and freely set as compared with the case of using a film or the like, and the volume Etc. can be set easily.
- the woven or knitted fabric of the present invention has the above-described configuration, since the conductive fibers in the woven or knitted fabric form a coil, it can be suitably used as a speaker diaphragm. . In addition, since it can be manufactured by a simpler method than a conventional diaphragm for a speaker, it can be manufactured at a low manufacturing cost. Furthermore, it is excellent in bending and bendability.
- This base material was fixed from above and below with a disk clamp having a hole with a sufficiently large inner diameter with respect to the outer diameter of the molded product at the center, and fixed so as to maintain the tension. Set for 20 seconds Then, the heat-sealing layer of the base material was melted, and a twill weave was woven. The basis weight of the twill was 90 g / m ".
- 3dtex Z72f polyester multifilament (s300) as the warp yarn, consisting of two 3dtex Z72f polyester multifilaments, and a melting point of 230 ° C
- a woven fabric was woven in the same manner as in Example 1 except that a weft was used, and a piece of two 0.1 mm ⁇ polyester-coated copper wires was used as a part of the weft.
- the driving number was 166 warps Z2.54 cm, and wefts 90 / 2.54 cm.
- the basis weight of the twill weave was 175 g / m 2 .
- FIG. 10 is a diagram showing the positions of the yoke, the bar-shaped magnet and the coil
- FIG. 11 is a cross-sectional view taken along line AA in FIG.
- a bar-shaped magnet 23 was placed on a yoke 22 (such as a 0.5 mm iron plate).
- the bar-shaped magnets 23 were alternately arranged with N poles and S poles.
- a cloth (non-woven fabric) 25 is placed on a yoke 22 on which a bar-shaped magnet 23 is placed.
- a diaphragm 24 having a coil formed thereon is placed with the cloth (non-woven fabric) 25 interposed therebetween. 22 and a diaphragm 24 on which a coil was formed were screwed together with a fabric (nonwoven fabric) 25 sandwiched therebetween.
- the thickness of the obtained speaker was 2. Omm.
- the leading end and the trailing end of the conductive fiber are soldered to form electrodes, and each of the electrodes is disconnected. I connected the sound source and the amplifier. The input from the sound source enabled the speaker 21 to function as a diaphragm.
- the twill weave obtained in Examples 13 to 13 was used for the diaphragm 24.
- a speaker was manufactured in the same manner as in Example 4, except that the positions of the yoke, the bar-shaped magnet, and the coil were changed as shown in FIG.
- the thickness of the obtained speaker was 2. Omm.
- the speaker functioned as a diaphragm.
- the diaphragm 24 used was a 5 mm-5 mm type instead of the 7 mm-3 mm type used in Example 4.
- Example 4 In the product obtained in Example 4 (7mm-3mm type) and the product obtained in Example 5 (5mm-5mm type), Example 4 is easier to roll than Example 5 Had excellent mass productivity.
- a 150dtexZ96f polyester multifilament twining yarn [s700 (under twist) / z400 (upply twist)] as a warp, it has a 167dtexZf polyester multifilament (s300) and a melting point of 230 ° C.
- Polyester fiber as the core material, and a core-sheath fusion yarn (167dtexZl6f) conjugated with a modified polyester sheath material with a melting point of 180 ° C as a heat fusion layer on this surface was used as the weft at a ratio of 1: 1.
- a copper wire coated with an alloy of copper and silver was further coated with polyester.
- a woven fabric was woven in the same manner as in Example 1 except that the woven fabric was used. The number of driving was 60 warp Z2.54 cm and 70 weft Z2.54 cm.
- a speaker was produced in the same manner as in Example 5 except that the twill weave obtained in Example 6 was used.
- Example 7 The loudspeaker manufactured in Example 7 was able to function as a speaker in the same manner as Examples 4 and 5.
- Example 7 The speaker obtained in Example 7 was superior to the speakers manufactured in Examples 4 and 5 in terms of sound quality and volume, which eliminated noise. In addition, the sound quality and volume were good even after long use.
- 167dtex Z96f polyester multi-filament (s300) and polyester with a melting point of 255 ° C, using a twinning yarn consisting of two polyester multifilaments (s700 (under twist) / z400 (up twist)) as the warp yarn.
- a core-sheath fusion yarn (167dtexZl6f) in which a denatured polyester sheath material with a melting point of 180 ° C is conjugated to the surface as a heat-sealable layer using a fiber as the core material, and a weft yarn with a ratio of 1: 1.
- a copper wire coated with an alloy of copper and silver is further coated with polyester.
- the base should be the 3Z1 structure shown in Fig. 13 and the ears should be the bag structure shown in Fig. 14, so that the positions of the yoke, bar magnet and coil are as shown in Fig. 12.
- the distance between copper wire and copper wire is 5mm-5mm
- a woven fabric was woven in the same manner as in Example 1 except that the woven fabric was woven.
- the driving number was 166 warp yarns Z2.54 cm and 70 weft yarns Z2.54 cm.
- the eyes with a twill weave was 378gZm 2.
- a speaker was manufactured in the same manner as in Example 5 except that the twill weave obtained in Example 8 was used (5 mm to 5 mm type).
- Example 9 The loudspeaker obtained in Example 9 was capable of producing a larger volume and a wider sound range than the speaker manufactured in Example 7.
- the woven or knitted fabric of the present invention can be suitably used as a diaphragm for a speaker, and from the shape thereof, can be particularly suitably used as a diaphragm for a flat speaker.
- the woven or knitted fabric also has conductive fiber strength, it is used as a circuit pattern. It can also be expected to be applied.
- FIG. 1 is a schematic view of an example of a plurality of coated conductive fibers of the present invention converged.
- FIG. 2 is a schematic view of an example of the woven or knitted fabric of the present invention.
- FIG. 3 is a schematic view of an example of the speaker of the present invention.
- FIG. 4 is a schematic view of an example of the speaker of the present invention.
- FIG. 5 is a schematic view of an example of the speaker of the present invention.
- FIG. 6 is a schematic diagram of an example of the speaker of the present invention.
- FIG. 7 is a schematic view of an example of the speaker of the present invention.
- FIG. 8 is a schematic view of an example of the speaker of the present invention.
- FIG. 9 is a schematic view of a coil shape of a woven fabric of an example.
- FIG. 10 is a schematic view of positions of a yoke, a bar-shaped magnet, and a coil in the speaker obtained in Example 4.
- FIG. 11 is a sectional view taken along line AA in FIG. 10.
- FIG. 12 is a schematic view showing positions of a yoke, a bar-shaped magnet, and a coil in the speaker obtained in Example 5.
- FIG. 13 is a schematic diagram of a base structure of the woven fabric of Example 10.
- FIG. 14 is a schematic view of a bag structure of a woven fabric of Example 10.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Woven Fabrics (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Knitting Of Fabric (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Laminated Bodies (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT05720147T ATE498720T1 (de) | 2004-03-08 | 2005-03-07 | Web- oder maschenware, membran für lautsprecher sowie lautsprecher |
JP2006510766A JP4541357B2 (ja) | 2004-03-08 | 2005-03-07 | 織編物、スピーカー用振動板及びスピーカー |
CN2005800074998A CN1934302B (zh) | 2004-03-08 | 2005-03-07 | 扬声器用振动板和扬声器 |
EP20050720147 EP1731643B1 (en) | 2004-03-08 | 2005-03-07 | Woven or knitted fabric, diaphragm for speaker, and speaker |
DE200560026376 DE602005026376D1 (de) | 2004-03-08 | 2005-03-07 | Web- oder maschenware, membran für lautsprecher sowie lautsprecher |
US10/591,989 US20070190881A1 (en) | 2004-03-08 | 2005-03-07 | Woven or knitted fabric, diaphragm for speaker, and speaker |
KR1020067016317A KR101160529B1 (ko) | 2004-03-08 | 2005-03-07 | 직편물, 스피커용 진동판 및 스피커 |
HK07109473A HK1101706A1 (en) | 2004-03-08 | 2007-08-31 | Diaphragm for speaker, and speaker |
US13/038,482 US20110188699A1 (en) | 2004-03-08 | 2011-03-02 | Woven or knitted fabric, diaphragm for speaker, and speaker |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004064608 | 2004-03-08 | ||
JP2004-064608 | 2004-03-08 | ||
JP2004202161 | 2004-07-08 | ||
JP2004-202161 | 2004-07-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/038,482 Division US20110188699A1 (en) | 2004-03-08 | 2011-03-02 | Woven or knitted fabric, diaphragm for speaker, and speaker |
Publications (1)
Publication Number | Publication Date |
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WO2005085508A1 true WO2005085508A1 (ja) | 2005-09-15 |
Family
ID=34921723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/003875 WO2005085508A1 (ja) | 2004-03-08 | 2005-03-07 | 織編物、スピーカー用振動板及びスピーカー |
Country Status (10)
Country | Link |
---|---|
US (2) | US20070190881A1 (ja) |
EP (1) | EP1731643B1 (ja) |
JP (1) | JP4541357B2 (ja) |
KR (1) | KR101160529B1 (ja) |
CN (1) | CN1934302B (ja) |
AT (1) | ATE498720T1 (ja) |
DE (1) | DE602005026376D1 (ja) |
HK (1) | HK1101706A1 (ja) |
TW (1) | TW200536973A (ja) |
WO (1) | WO2005085508A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US20110188699A1 (en) | 2011-08-04 |
CN1934302B (zh) | 2011-04-06 |
KR101160529B1 (ko) | 2012-06-28 |
EP1731643A4 (en) | 2007-11-14 |
JP4541357B2 (ja) | 2010-09-08 |
DE602005026376D1 (de) | 2011-03-31 |
US20070190881A1 (en) | 2007-08-16 |
ATE498720T1 (de) | 2011-03-15 |
TWI354040B (ja) | 2011-12-11 |
CN1934302A (zh) | 2007-03-21 |
KR20060132694A (ko) | 2006-12-21 |
EP1731643A1 (en) | 2006-12-13 |
EP1731643B1 (en) | 2011-02-16 |
TW200536973A (en) | 2005-11-16 |
JPWO2005085508A1 (ja) | 2008-01-24 |
HK1101706A1 (en) | 2007-10-26 |
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