WO2012073343A1 - スピーカエッジ及びその製造方法、スピーカ - Google Patents
スピーカエッジ及びその製造方法、スピーカ Download PDFInfo
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- WO2012073343A1 WO2012073343A1 PCT/JP2010/071407 JP2010071407W WO2012073343A1 WO 2012073343 A1 WO2012073343 A1 WO 2012073343A1 JP 2010071407 W JP2010071407 W JP 2010071407W WO 2012073343 A1 WO2012073343 A1 WO 2012073343A1
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- layer
- resin
- fiber
- speaker edge
- speaker
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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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/022—Mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/027—Thermal properties
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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
- 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
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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
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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
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
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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
- 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
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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
- 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
- H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said 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
- 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
- H04R2307/204—Material aspects of the outer suspension of loudspeaker 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
- 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
- H04R2307/207—Shape aspects of the outer suspension of loudspeaker 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
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
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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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- 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
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
Definitions
- the present invention relates to a speaker edge, a manufacturing method thereof, and a speaker provided with the speaker edge.
- a support member that elastically supports a diaphragm for an electroacoustic transducer has a two-phase structure in which a microdomain phase of polypropylene is dispersed in a matrix of ethylene, propylene, diene, and methylene linkage rubber. It is described that it comprises a thermoplastic olefin-based elastomer.
- Patent Document 2 listed below describes a speaker edge formed by simultaneously molding a foam rubber edge and a cloth material.
- a cloth material is provided on one or both sides or inside of the foam rubber edge, and this cloth material is impregnated with resin.
- Patent Document 1 describes a speaker edge obtained by molding a thermoplastic elastomer sheet into an edge shape. When this speaker edge is used for a subwoofer having a relatively large diameter, a relatively thick elastomer sheet is selected.
- thermoplastic elastomer does not have a good thermal conductivity, it takes time to form a relatively thick thermoplastic elastomer sheet, and efficient production may not be possible.
- efficient production it is conceivable to shorten the molding time by raising the temperature of the molding die. However, if the mold temperature is raised too much, a part of the surface of the sheet may melt, and it is difficult to raise the mold temperature to a high temperature that can shorten the molding time.
- Patent Document 2 describes a speaker edge including a foamed rubber layer and a fiber layer (cloth material). Patent Document 2 describes that the rigidity of the speaker edge is increased by bonding a foamed rubber material to a cloth material filled with a resin. In the speaker edge described in Patent Document 2, the physical property of the speaker edge may be greatly influenced by the physical property of the cloth material impregnated with the resin. For this reason, it is difficult to adjust the physical properties of the speaker edge according to the physical properties of the foamed rubber material. On the other hand, since the fiber layer is filled with resin, this Patent Document 2 has a problem that it takes a lot of molding time like the speaker edge shown in Patent Document 1 when performing molding by heating.
- the present invention is an example of a problem to deal with such a problem. That is, the desired physical properties can be obtained with the resin member, the heating temperature at the time of molding is increased to improve the productivity, and when the fiber-based member is employed as the speaker edge material, the physical properties of the speaker edge itself are fibers. It is an object of the present invention to suppress the influence of the physical properties of the system members.
- the present invention comprises at least the following configuration.
- a resin layer composed of a resin member having elasticity and a fiber layer composed of a fiber entangled body composed of a plurality of fibers intertwined with each other, the thickness of the fiber layer being smaller than the thickness of the resin layer,
- the speaker edge wherein the melting temperature of the entangled body is higher than the melting temperature of the resin member, and the rigidity of the fiber entangled body is smaller than the rigidity of the resin member.
- FIG. 1 is an explanatory view showing a cross-sectional structure of a speaker edge according to an embodiment of the present invention.
- FIG. 1A shows a speaker edge according to an embodiment of the present invention, and
- FIGS. 1B and 1C show comparative edges.
- the speaker edge 1 includes a resin layer 10 and a fiber layer 20.
- the resin layer 10 is a layer composed of an elastic resin member 10A.
- the density of the resin layer 10 is substantially the same as the density of the resin member 10A.
- the resin layer 10 is made of, for example, a non-foamed resin member. Non-foaming means that the resin member does not contain a foaming additive such as a foaming agent or a microphone capsule during molding.
- the fiber layer 20 is a layer composed of a fiber entangled body 20A composed of a plurality of fibers intertwined with each other.
- the speaker edge 1 has a thickness T0, and the thickness T2 of the fiber layer 20 is smaller than the thickness T1 of the resin layer 10 (T1> T2).
- the sum of the thickness T 1 of the resin layer 10 and the thickness T 2 of the fiber layer 20 is the thickness T 0 of the speaker edge 1.
- the thickness T0 of the speaker edge 1 includes not only this but the thicknesses of layers other than the resin layer 10 and the fiber layer 20 (a bonding layer described later, a layer in which a bonding resin member and a fiber entangled body are mixed). be able to.
- the constituent material of the resin member 10A is mainly a resin material.
- a filler, an antistatic agent, or the like may be employed as a constituent material.
- the resin material include thermoplastic resins having elasticity (thermoplastic elastomers).
- the constituent material may be a single resin material or a mixture of a plurality of resin materials.
- the resin material includes a copolymer in which two or more kinds of polymers having different chemical structures (skeletons) are chained.
- the fiber entangled body 20A has a form in which a plurality of fibers are entangled with each other.
- the fiber entangled body 20A includes a woven fabric and a non-woven fabric.
- the woven fabric and non-woven fabric as the fiber entangled body for example, the influence on the moldability of the resin member 10A is relatively small, or the time-dependent deformation of the speaker edge after molding is relatively small.
- a nonwoven fabric may be used as the fiber entanglement body. When the woven fabric has stretch directionality, the non-woven fabric is used from the viewpoint that the influence on the moldability of the resin member 10A is relatively small and that the speaker edge after molding is relatively small in deformation over time.
- a fiber entangled body may be used.
- nonwoven fabric a nonwoven fabric (adhesive entangled body) having an adhesive resin in which a plurality of fibers are bonded to each other with an adhesive resin, free entanglement in which a plurality of fibers are not bonded to each other by water jet punching or needle punching
- non-woven fabric free entangled body
- the nonwoven fabric which has adhesive resin
- the nonwoven fabric which has a different kind of adhesive resin heterogeneous adhesive type entangled body
- the adhesive resin is made of a resin material different from the constituent material of the fiber
- a self-adhesive non-woven fabric self-adhesive entangled body in which a plurality of fibers are bonded to each other by using a specific spinning means such as flash spinning or using a heat-bonding fiber.
- the influence on the moldability of the resin member 10A is relatively small, or the temporal deformation that occurs at the speaker edge after molding is relatively small, or the vibrating body (vibration) It is preferable to use a free entangled nonwoven fabric as the fiber entangled body from the viewpoint that the weight of the fiber entangled body (including the plate and the edge) is relatively small.
- the fiber entangled body 20A may have a form in which an adhesive entangled body and a free type entangled body are laminated.
- the constituent material of the fiber may be a resin material or a natural material.
- the fibers include synthetic fibers such as polyester fibers and nylon fibers, natural fibers (including plant fibers such as cotton and silk, animal fibers such as wool, and mineral fibers such as basalt fibers) and glass fibers.
- synthetic fibers such as polyester fibers and nylon fibers
- natural fibers including plant fibers such as cotton and silk, animal fibers such as wool, and mineral fibers such as basalt fibers
- glass fibers glass fibers.
- the speaker edge 1 may have a relatively high melting temperature of the fiber entangled body 20A, particularly a fiber melting temperature of the fiber entangled body 20A.
- the fiber entangled body 20A is heated at the melting temperature of the resin member 10A, it is preferable in terms of molding the speaker edge 1 that the fiber entangled body 20A, particularly the fibers of the fiber entangled body 20A do not melt. From this point, it is preferable that the melting temperature of the fiber entangled body 20A, particularly the fiber melting temperature of the fiber entangled body 20A is larger than the melting temperature of the resin member 10A.
- the melting temperature of the fiber entangled body 20 ⁇ / b> A is preferably higher than the melting temperature of the resin member 10 ⁇ / b> A by, for example, 30 ° C. in terms of molding the speaker edge 1.
- the stiffness of the fiber entangled body 20A may be smaller than the stiffness of the resin member 10A.
- G Et 3
- E Young's modulus
- t thickness.
- the rigidity of the speaker edge 1 is smaller than the rigidity of the edge of the speaker edge 1 in which the resin layer 10 and the fiber layer 20 have the same thickness (the same thickness comparison edge; see FIG. 1B). I do not care.
- the internal loss of the fiber entangled body 20A may be larger than the internal loss of the resin member 10A.
- the internal loss of the speaker edge 1 having the thickness T0 is the internal loss of the edge (the first comparative speaker edge; see FIG. 1 (c)) having the thickness T0 and made of only the resin member 10A. It may be smaller than the loss, the thickness is T0, and the resin layer 10 and the fiber layer 20 may be larger than the internal loss of the same thickness comparison edge (see FIG. 1B).
- the heating temperature at the time of molding can be increased by providing the fiber layer 20 made of the fiber entangled body 20A having a relatively high melting temperature. Further, the molding time of the speaker edge 1 can be shortened, and the productivity can be improved. Moreover, the influence of the physical properties of the fiber layer 20 on the physical properties of the resin layer 10 is relatively small. For this reason, the physical properties of the speaker edge 1 can be appropriately adjusted by selecting the constituent material of the resin member 10A (selecting the type of resin material, the ratio of the resin material to be mixed or the selection of the copolymer resin material). .
- FIG. 1B shows a comparison edge 1X (same thickness comparison speaker edge described above) to be compared with the speaker edge 1 according to the embodiment of the present invention.
- the comparison edge 1X is the same except that the resin layer and the fiber layer of the speaker edge 1 are different in thickness.
- the comparative edge 1X includes a first layer 10X made of the same resin member 10A as the speaker edge 1 and a second layer 20X made of the same fiber entangled body 20A as the speaker edge 1.
- the thickness T1 of the resin layer 10 of the speaker edge 1 is larger than the thickness T1 'of the first layer 10X of the comparative edge 1X.
- FIG. 1C shows a comparative edge 1Y (second comparative speaker edge described above) to be compared with the speaker edge 1 according to the embodiment of the present invention.
- the comparative edge 1Y is the same except that the fiber layer of the speaker edge 1 is not present.
- the comparison edge 1Y includes only the first layer 10Y made of the same resin member 10A as the speaker edge 1.
- the thickness T1 of the resin layer 10 of the speaker edge 1 is smaller than the thickness T0 of the first layer 10Y of the comparative edge 1Y.
- the total thickness (T0) of the comparative edge 1Y is equal to the thickness (T0) of the speaker edge 1.
- the rigidity of the speaker edge 1 may be smaller than the rigidity of the comparison edge 1X as compared with the above-described comparison edge 1X (same thickness comparison speaker edge). Further, the internal loss of the speaker edge 1 may be larger than the internal loss of the comparative edge 1X. Further, when the speaker edge 1 is compared with the above-described comparison edge 1Y (first comparison speaker edge), the rigidity of the speaker edge 1 is larger than the rigidity of the comparison edge 1Y, and the internal loss of the speaker edge 1 is the comparison edge. Less than 1Y internal loss.
- the thickness T1 of the resin layer 10 is larger than the thickness T2 of the fiber layer 20.
- the ratio of the thickness of the resin layer 10 to the thickness of the speaker edge 1 is larger than the ratio of the thickness of the first layer 10X to the thickness of the comparative edge 1X.
- the physical properties of the speaker edge 1 are mainly set by the physical properties of the resin member 10A.
- the physical properties of the resin member 10A have a greater influence on the physical properties of the speaker edge 1 than the physical properties of the fiber entangled body 20A.
- the internal loss of the speaker edge 1 in the low frequency range is the first comparative speaker edge (resin layer). Only) is smaller than the internal loss. For this reason, the mechanical resistance to the vibrating body (including the diaphragm and the edge) at a low frequency is relatively small, and the vibrating body is likely to vibrate.
- the speaker device provided with the speaker edge 1 is a speaker device for low-frequency reproduction, a speaker edge having a small internal loss in the low frequency can be suitably used.
- the speaker device for low frequency reproduction is not limited to the low frequency reproduction band, and may include a low frequency and a middle frequency as necessary.
- FIG. 2 is an explanatory view showing a cross-sectional structure of a speaker edge according to another embodiment of the present invention.
- the speaker edge 1a shown in FIG. 2A is composed of a resin layer 10 made of an elastic resin member 10A (for example, a non-foamed resin member) and a fiber entangled body 20A made up of a plurality of fibers intertwined with each other.
- the fiber layer 20 is provided.
- the speaker edge 1a includes a bonding layer 30 in which a part of the fiber entangled body 20A disposed on the resin layer 10 side and a part of the resin member 10A disposed on the fiber layer 20 side are mixed. In the bonding layer 30, the fibers of the fiber entangled body 20A are in the resin member 10A.
- the fiber layer 20 can be deformed along with the deformation of the resin layer 10. For this reason, the influence which the fiber entangled body 20A has on the moldability of the resin member 10A can be made relatively small. In addition, the time-dependent deformation of the molded speaker edge can be made relatively small. Further, it is possible to shorten the molding time of the speaker edge 1. Further, by providing the fiber layer 20 in contact with the resin layer 10, the heat of the heat source at the time of molding can be efficiently transmitted to the resin layer 10 through the fiber layer 20. For this reason, it becomes easy to mold the resin layer 10.
- the fiber layer 20 and the resin layer 10 may be connected by a bonding member (other bonding member) different from the resin member 10 ⁇ / b> A constituting the resin layer 10.
- the resin layer 10 and the fiber layer are provided by providing the bonding layer. 20 are preferably connected.
- the resin member 10A when the temperature of the heat source is set higher than the melting temperature of the resin member 10A, the resin member 10A is brought into thermal contact with the molding die as a heat source described later via the fiber entangled body 20A, so that the resin member 10A The temperature can be increased efficiently and the molding of the resin layer 10 can be facilitated.
- the fiber layer 20 of the speaker edge 1 a includes a first surface 21 facing the resin layer 10 and a second surface 22 opposite to the resin layer 10. Further, the fiber layer 20 between the bonding layer 30 and the second surface 22 is substantially composed of a fiber entangled body 20A.
- the fiber layer 20 between the bonding layer 30 and the second surface 22 includes a fiber entangled body 20A that is a free entangled body or a laminate in which an adhesive entangled body and a free type entangled body are laminated. It does not matter.
- the fiber entangled body 20 ⁇ / b> A includes a gap composed of a plurality of fibers therein. Further, a part of the fiber layer 20 in the vicinity of the second surface 22 has a gap.
- the porosity (%) of the fiber entangled body 20A is expressed as follows: (1-weight of all fibers in the fiber entangled body (g) / fiber density (g / m 3 ) / volume occupied by the fiber entangled body 20A (m 3 )) x100.
- the porosity of the fiber entangled body 20A may be larger than the porosity of the resin member 10A.
- the surface of the fiber layer 20 has a concave portion and a convex portion formed by entanglement of a plurality of fibers.
- Resin member 10A is made of a thermoplastic resin having elasticity as a resin material.
- the 2nd surface 22 of the fiber layer 20 is provided with the joining surface or attachment surface which a to-be-attached member (illustration omitted) joins directly or through another member.
- the attachment member may be a frame.
- the other member include a bonding member such as an adhesive.
- a gap composed of a plurality of fibers is provided in the vicinity of the joint surface of the second surface 22 . This void may communicate with the void of the fiber entangled body 20 ⁇ / b> A disposed between the resin layer 10 and the second surface 22.
- the bonding area on the bonding surface is relatively large and relatively high because the adhesive contacts the concave and convex portions of the bonding surface.
- the attached member and the fiber layer 20 can be joined by the joining force.
- an adhesive agent penetrates into the space
- an adhesive agent penetrates into the inside of the fiber layer 20 further, A to-be-attached member and the fiber layer 20 Is bonded more firmly.
- the thermoplastic resin having elasticity may have a small bonding force with respect to the mounted member, and the surface of the mounted member may be subjected to surface treatment (primer treatment) to improve the bonding force.
- surface treatment primary treatment
- the bonding force of the thermoplastic resin having elasticity with respect to the mounted member is relatively small, the concave portion and the convex portion or the gap is provided in the vicinity of the bonding surface of the fiber layer 20, so that the configuration of the mounted member Regardless of the material, the joining surface of the speaker edge 1 and the attached member (surface) can be joined with a relatively large joining force using a joining member.
- the fiber layer 20 has a layer in which the fiber entangled body 20 ⁇ / b> A and the bonding member are mixed in the vicinity of the second surface 22.
- the fiber layer 20 of the speaker edge 1b shown in FIG. 2B includes a surface layer 40 disposed on the second surface 22 side, and an intermediate layer 20S disposed between the bonding layer 30 and the surface layer 40.
- the surface layer 40 is composed of the fiber entangled body 20A and an adhesive member 40A that bonds a plurality of fibers of the fiber entangled body 20A
- the intermediate layer 20S is composed of the fiber entangled body 20A as a free entangled body.
- the surface layer 40 may be formed thinner than the intermediate layer 20S. In this case, an external heat source can be efficiently transmitted to the resin layer 10 through the fiber layer.
- the speaker edge 1b has substantially the same or larger rigidity than the speaker edge 1a. Further, the internal loss of the speaker edge 1b is substantially the same as or smaller than that of the speaker edge 1a.
- the speaker edge 1b is obtained by forming a surface layer 40 on the surface of the fiber layer 20 of the speaker edge 1a.
- the surface layer 40 includes a gap and a bonding member that bonds a plurality of fibers of the fiber entangled body 20.
- the bonding member include a resin member made of a resin material such as polyurethane resin.
- the joining member is provided in the vicinity of the entanglement point where a plurality of fibers are entangled. That is, the joining member constitutes a void that communicates the outside with the inside of the surface layer 40 and / or the fiber layer 20.
- the speaker edges 1, 1a, 1b are molded by heating to a predetermined shape using a heat source. At this time, one surface of the resin layer 10 and one surface of the fiber layer 20 become contact surfaces that come into contact with an external heat source for molding.
- the fiber layer 20 is a heat transfer layer that transfers the heat of the external heat source to the resin layer 10.
- the resin member 10A can be made of a thermoplastic resin.
- This thermoplastic resin can be formed by a copolymer having a hard segment and a soft segment, or a mixture of a first resin member that is a hard segment and a second resin member that is a soft segment.
- the copolymer include a polyurethane resin composed of a polydiol (polyester, etc.), a hard segment (diisocyanate such as MDI), and a chain extender (ethylene glycol) as a soft segment.
- a mixture in which different resin materials such as polypropylene (PP) is used as the first resin member and ethylene / propylene / diene rubber (EPDM) is used as the second resin is used.
- PP polypropylene
- EPDM ethylene / propylene / diene rubber
- a resin member made of a resin material (TPO) in which polypropylene (PP) and ethylene / propylene / diene rubber (EPDM) are mixed has, for example, a Young's modulus of about 3.29 * 10 7 and an internal loss of about 0.118. It is.
- the physical properties of the speaker edges 1, 1a, 1b are appropriately determined depending on the resin blending ratio of the mixture.
- the internal loss of the first resin member is selected to be larger than the internal loss of the second resin member, and the internal loss of the first resin member is set as the internal loss of the resin material constituting the fiber of the fiber layer 20. It is possible to select a larger value.
- thermoplastic olefin resin As the thermoplastic olefin resin as the first resin member, polypropylene (PP), as the rubber resin as the second resin member, ethylene / propylene / diene rubber (EPDM), as the constituent material of the fiber of the fiber layer 20, Polyester (for example, polyethylene terephthalate (PET) or the like) can be used.
- the internal loss of polypropylene (PP) is about 0.08
- the internal loss of ethylene / propylene / diene rubber (EPDM) is about 0.02
- the internal loss of polyester terephthalate (PET) is about 0.02.
- the specific heat of the resin material (for example, polyethylene terephthalate (PET)) constituting the fiber of the fiber layer 20 is the first resin member (for example, polypropylene (PP)) and / or the second resin member (for example, ethylene propylene).
- -It is desirable that the specific heat of diene rubber (EPDM) is small.
- specific heat (kJ / kg ⁇ K) is 1.05 for polyethylene terephthalate (PET), 1.93 for polypropylene (PP), and 2.17 for ethylene / propylene / diene rubber (EPDM).
- the resin layer 10 may be a continuous layer formed continuously by the resin member 10A.
- the surface density of the resin layer 10 is larger than the surface density of the fiber layer 20. For this reason, the rigidity of the speaker edge 1 can be set to a desired size.
- FIG. 3 is an explanatory diagram showing a speaker provided with a speaker edge according to an embodiment of the present invention.
- FIG. 4A shows a cross-sectional structure diagram of the entire speaker
- FIG. 4B shows a cross-sectional structure portion of the edge mounting portion.
- the speaker 100 includes a vibration system member 100A including the speaker edge 1 and a stationary member 100B which is relatively stationary with respect to the vibration of the vibration system member. This stationary member supports the vibration system member 100A.
- the vibration system member 100 ⁇ / b> A includes a diaphragm 2 and a voice coil 3 that vibrates the diaphragm 2.
- the stationary member 100B includes a frame (attached member) 5 to which the magnetic circuit 4 and the vibration system member 100A are attached.
- the voice coil 3 is supported by a voice coil support portion (voice coil bobbin) 3A, the voice coil support portion 3A is connected to the inner peripheral portion of the diaphragm 2, and the outer peripheral portion of the diaphragm 2 is connected to the speaker edge 1. It is attached to the frame 5 via. Further, the voice coil support portion 3A is supported by the frame 5 by the damper 6 so as to freely vibrate.
- a voice coil support portion voice coil bobbin
- the magnetic circuit 4 includes a magnet 4A, a yoke 4B, and a plate 4C, and a magnetic gap 4G is formed between the plate 4C and the yoke 4B.
- the voice coil 3 supported by the voice coil support 3A is disposed in the magnetic gap 4G.
- the top of the voice coil support 3 ⁇ / b> A is covered with a center cap 7. Both end portions of the voice coil 3 are connected to a terminal portion 9 to which an audio signal is input via a lead wire 8.
- the terminal portion 9 is electrically connected to the outside.
- the speaker edge 1 is connected at one end to the outer periphery of the diaphragm 3 via a joining member, and the other end is connected to a frame (attached member) 5 via a joining member.
- the form of the speaker edge 1 may be any form as long as the diaphragm 2 can be supported by the frame 5 so as to vibrate freely.
- the curved portion 1 ⁇ / b> R is provided, the flat portions 1 ⁇ / b> F are provided at both ends thereof, one flat portion 1 ⁇ / b> F is connected to the outer peripheral portion of the diaphragm 2, and the other flat portion 1 ⁇ / b> F is connected to the flange portion of the frame 5. It is connected.
- the speaker edge 1 is arranged on the side where the fiber layer 20 faces the frame 5 or the diaphragm 2 (attached member). That is, a bonding member such as an adhesive is attached to the fiber layer 20. In the speaker edge 1a shown in FIG. 2 (a), the bonding member adheres to the second surface 22 of the fiber layer 20, but the bonding member enters the gap near the second surface, and the bonding member. And the joining state of the fiber layer 20 is strengthened.
- a bonding member adheres to the surface of the surface layer 40, but the surface layer 40 also has a void similar to the second surface 22 of the fiber layer 20.
- the bonding member enters the gap, and the bonding state between the bonding member and the fiber layer 20 is strengthened.
- the figure also shows the cross-sectional shape of the speaker edge 1a, the mounting structure of the speaker edge 1a and the diaphragm 2, and the mounting structure of the speaker edge 1a and the frame 5 (attached member).
- a folded portion 2 ⁇ / b> P is provided at the outer end portion of the diaphragm 2. Since the diaphragm 2 includes the folded portion 2P, the acoustic characteristics can be improved.
- FIG. 4 is an explanatory diagram (sectional view) showing another configuration example of the speaker edge according to the embodiment of the present invention.
- the illustrated speaker edge 1 (1a) includes a linear portion 1F on the inside and outside of the bending portion 1R, and the bending portion 1R includes a plurality of irregularities.
- FIGS. 9A, 9B, and 9C show cross-sectional shapes of the speaker edge 1 (1a) having partially different thicknesses.
- the speaker edge 1 (1a) shown in the figure (a) is an example in which the thickness (t3) of a part between the inner peripheral part and the outer peripheral part is thicker than the other part, shown in the figure (b).
- the speaker edge 1 (1a) is an example in which the thickness (t1) of the inner peripheral portion is thicker than other portions, and the speaker edge 1 (1a) shown in FIG. ) Is an example thicker than other parts.
- FIG. 5 is an explanatory diagram for explaining the manufacturing process of the speaker edge according to the embodiment of the present invention.
- the manufacturing process of the speaker edge 1 includes a fiber entangled body forming step for forming the fiber entangled body 20A in a sheet shape, a resin member forming step for forming the resin member 10A in a sheet shape, and a sheet-like shape.
- the resin member 10 ⁇ / b> A formed in a sheet shape and wound in a roll shape and the fiber entangled body 20 ⁇ / b> A are stacked while being conveyed by the conveying roll 200 and are bonded by the pressure roll 203.
- Heat treatment S ⁇ b> 1-1 is performed on the resin member 10 ⁇ / b> A before joining, and the softened resin member 10 ⁇ / b> A and the fiber entangled body 20 ⁇ / b> A are joined by the press roll 203.
- the laminated body of the resin member 10A and the fiber entangled body 20A is subjected to a molding step S4 through a surface layer coating step S2 and a drying step S3 in the course of being transported by the transport roll 200.
- a surface layer coating step S2 various coating methods such as gravure coating can be employed.
- the laminate of the resin member 10A and the fiber entangled body 20A is molded into the speaker edge 1 using a heat source in the molding step S4.
- a molding die on the resin layer side (second molding) using a laminate including the resin layer 10 composed of the resin member 10A and the fiber layer 20 composed of the fiber entangled body 20A as a heat source.
- the metal mold 201 is inserted between the fiber layer-side molding mold (first molding mold) 202 as a heat source.
- the molding die 201 is brought into contact with the resin layer 10
- the molding die 202 is brought into contact with the fiber layer 20, and the temperature of the molding die 202 is set to the temperature of the molding die 201.
- the laminate is formed into an edge shape.
- the temperature of the molding die 202 on the fiber layer side is set to that for molding on the resin layer side. It becomes possible to make it higher than the temperature of the mold 201.
- a high-temperature molding die 202 is brought into contact with the fiber layer 20 and heated. Thereby, the heat of the molding die 202 is transferred to the resin layer 10 through the fiber layer 20. Further, the resin layer 10 can be efficiently heated, and the molding time can be shortened.
- the temperature of the molding die 202 may be set higher than the melting temperature of the resin member 10A and substantially the same as or lower than the melting temperature of the fiber entangled body 20A. After the laminated body is formed using a heat source, cooling or the like is performed as appropriate, and then the speaker edge 1 is obtained by cutting into a predetermined size.
- the resin layer 10 has been described by taking as an example the non-foamed resin member 10A. Without being limited thereto, the resin layer 10 may be formed of a foamed resin member 10A.
- FIG. 6 is an explanatory diagram showing an electronic device and a vehicle on which a speaker employing the speaker edge of the present invention is mounted.
- FIG. 7 is an explanatory view showing an electronic device equipped with a speaker employing the speaker edge of the present invention.
- the speaker according to the embodiment of the present invention can be suitably mounted on a building such as an electronic device, an automobile, or a house as shown in the figure.
- the speaker 100 can be housed in a housing as a mounting member provided in an electronic device 500 such as a mobile phone or a portable information terminal as shown in FIG. 6A or an electronic device such as a flat panel display. Further, the speaker 100 can be used in an automobile 501 as shown in FIG.
- the electronic device 502 includes a display unit 502A and an input operation unit 502B, and the input operation unit 502B is a housing that houses the speaker 100. Both ends of the display unit 502A and the input operation unit 502B are rotatably connected.
- a plurality of speakers 100 are provided so that a vibrating body is disposed on the operation surface of the input operation unit 502B.
- the display unit 502A may be a housing, and one or more speakers 100 may be arranged on the side of the display unit 502A.
- the electronic device 503 includes a pair (plurality) of casings 503A and 503A that house the speakers 100, and an arch-shaped connecting portion 503B that connects the casings 503A and 503A electrically connects the plurality of speakers 100.
- This is a wiring accommodating portion for accommodating wiring to be performed.
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Abstract
Description
弾性を有する樹脂部材で構成される樹脂層と、互いに絡み合う複数の繊維からなる繊維交絡体で構成される繊維層とを備え、前記繊維層の厚さは前記樹脂層の厚さより小さく、前記繊維交絡体の溶融温度は前記樹脂部材の溶融温度より大きく、前記繊維交絡体の剛性が前記樹脂部材の剛性より小さいことを特徴とするスピーカエッジ。
Claims (29)
- 弾性を有する樹脂部材で構成される樹脂層と、互いに絡み合う複数の繊維からなる繊維交絡体で構成される繊維層とを備え、
前記繊維層の厚さは前記樹脂層の厚さより小さく、
前記繊維交絡体の溶融温度は前記樹脂部材の溶融温度より大きく、
前記繊維交絡体の剛性が前記樹脂部材の剛性より小さいことを特徴とするスピーカエッジ。 - 前記繊維層は、前記複数の繊維で構成される空隙を備えることを特徴とする請求項1記載のスピーカエッジ。
- 前記繊維層は、自由型交絡体である前記繊維交絡体で実質的に構成される層を備えることを特徴とする請求項2に記載のスピーカエッジ。
- 前記繊維層と前記樹脂層の間に、当該樹脂層側に配置された前記繊維層の前記繊維交絡体の一部と前記繊維層側に配置された前記樹脂層の前記樹脂部材の一部が混在する接合層を備え、
前記自由型交絡体である前記繊維交絡体で実質的に構成される層は、前記接合層に対して前記繊維層側に配置されていることを特徴とする請求項3に記載のスピーカエッジ。 - 前記繊維交絡体を構成する繊維の比熱は、前記樹脂部材を構成する樹脂材料の比熱に対して実質的に同じ又は小さく、
前記繊維層は、外部の熱源の熱を樹脂層へ伝達する伝熱層であることを特徴とする請求項4に記載のスピーカエッジ。 - 前記スピーカエッジが有する前記樹脂層と前記繊維層を全て前記樹脂層に置き換えた第1の比較用スピーカエッジに対して、
当該スピーカエッジの剛性は、前記第1の比較用スピーカエッジの剛性より大きく、
当該スピーカエッジの内部損失は、前記第1の比較用スピーカエッジの内部損失より小さいことを特徴とする請求項5に記載のスピーカエッジ。 - 前記繊維交絡体を構成する繊維の内部損失は前記樹脂部材の内部損失より小さいことを特徴とする請求項6記載のスピーカエッジ。
- 前記樹脂層の密度が前記樹脂部材の密度に実質的に等しい、又は前記樹脂層の空隙率は前記繊維層の空隙率より小さいことを特徴とする請求項7に記載のスピーカエッジ。
- 前記繊維層は、前記樹脂層に対面する第1の面と当該樹脂層に対し逆側の第2の面とを備え、前記接合層と前記第2の面との間における前記繊維層は前記自由型交絡体である前記繊維交絡体で実質的に構成される層を備えることを特徴とする請求項8記載のスピーカエッジ。
- 前記接合層と前記第2の面との間における前記繊維層は、前記第2の面側に配置される表層と、前記接合層と前記表層との間に配置される中間層とを備え、
前記表層は、前記繊維交絡体と当該繊維交絡体の複数の繊維を接合する接合用部材とで構成され、
前記中間層は、前記自由型交絡体である前記繊維交絡体で実質的に構成される層を備えることを特徴とする請求項9記載のスピーカエッジ。 - 前記接合用部材を有する前記表層を実質的に前記自由型交絡体である前記繊維交絡体で構成された層に置き換えた第2の比較用スピーカエッジに対して、
当該スピーカエッジの剛性は前記第2の比較用スピーカエッジの剛性に対して実質的に同じ又は大きく、
当該スピーカエッジの内部損失は、前記第2の比較用スピーカエッジの内部損失に対して実質的に同じ又は小さいことを特徴とする請求項10記載のスピーカエッジ。 - 前記接合用部材を有する前記表層は、空隙を備えることを特徴とする請求項11記載のスピーカエッジ。
- 前記樹脂部材は弾性を有する熱可塑性樹脂で構成され、
前記繊維層の第2の面は、直接又は他の部材を介して被取付部材に取り付けられる取付面又は接合面を備えることを特徴とする請求項12記載のスピーカエッジ。 - 前記接合用部材を有する前記表層の空隙と、前記中間層の空隙とが連通することを特徴とする請求項13記載のスピーカエッジ。
- 前記スピーカエッジは所定の形状に成形されており、
前記樹脂層の一面と前記繊維層の一面は、外部の熱源と接触する接触面であることを特徴とする請求項14記載のスピーカエッジ。 - 前記接合層における前記繊維の比熱は、前記接合層における樹脂部材の比熱に対して小さいことを特徴とする請求項15に記載のスピーカエッジ。
- 前記樹脂部材を構成する熱可塑性樹脂部材は、
ハードセングメントである第1の樹脂材料とソフトセグメントである第2の樹脂材料との混合物であることを特徴とする請求項16記載のスピーカエッジ。 - 前記第1の樹脂材料の内部損失は、前記第2の樹脂材料の内部損失より大きく、
前記第1の樹脂材料の内部損失は、前記繊維を構成する樹脂材料の内部損失より大きいことを特徴とする請求項17記載のスピーカエッジ。 - 前記第1の樹脂材料はポリプロピレンであり、前記第2の樹脂材料はエチレン・プロピレン・ジエンゴムであることを特徴とする請求項18に記載のスピーカエッジ。
- 前記樹脂層の面密度は、前記繊維層の面密度より大きいことを特徴とする請求項19記載のスピーカエッジ。
- 請求項20に記載のスピーカエッジを有する振動系部材と、当該振動系部材を支持する静止部材を備え、
前記振動系部材は、振動板と当該振動板に支持されるボイスコイルを備え、
前記静止部材は、磁気回路と前記振動系部材を支持する被取付部材を備え、
前記スピーカエッジは、内周部と外周部を備え、
前記内周部側における当該スピーカエッジの一部が前記振動板の外周部に接合用部材を介して連結され、前記外周部側における当該スピーカエッジの一部が前記被取付部材に接合用部材を介して連結され、
前記繊維層は、前記被取付部材に対面する側に配置されることを特徴とするスピーカ。 - 樹脂部材で構成される樹脂層と、互いに絡み合う複数の繊維からなる繊維交絡体で構成され前記樹脂層の厚さより小さい厚さを有する繊維層とを備えた積層体を、熱源としての第1の成形用金型と第2の成形用金型により加熱するとともに、所定の形状に成形する成形工程を有し、
前記繊維交絡体の剛性が前記樹脂部材の剛性より小さく、
前記繊維交絡体の溶融温度は前記樹脂部材の溶融温度より大きく、
前記第1の成形用金型の温度は、前記第2の成形用金型の温度より高く、
前記成形工程は、前記繊維層に前記第1の成形用金型を接触させ、前記樹脂層に前記第2の成形用金型を接触させる工程を有すること
を特徴とするスピーカエッジの製造方法。 - 前記繊維層は、自由型交絡体である前記繊維交絡体で構成される層を備え、
前記第1の成形用金型の温度は、前記樹脂部材の溶融温度より高く、前記繊維交絡体の溶融温度と略同じ又は低く、
前記繊維交絡体を構成する繊維の比熱は、前記樹脂部材を構成する樹脂材料の比熱に対して実質的に同じ又は小さく、
前記繊維層は、前記第1の成形用金型の熱を樹脂層へ伝達する伝熱層であることを特徴とする請求項22記載のスピーカエッジの製造方法。 - 前記繊維交絡体をシート状に形成する繊維交絡体の形成工程と、
前記樹脂部材をシート状に形成する樹脂部材の形成工程と、
シート状の前記繊維交絡体とシート状の前記樹脂部材とを積層して接合する接合工程とを有することを特徴とする請求項23記載のスピーカエッジの製造方法。 - 請求項1に記載したスピーカ装置を備えることを特徴とする自動車。
- 請求項1に記載したスピーカ装置を備えることを特徴とする電子機器。
- 請求項1に記載したスピーカ装置を備えることを特徴とする建築物。
- 前記繊維層を構成する繊維は、前記樹脂層を構成する樹脂部材を接合用樹脂として、前記樹脂層の樹脂部材に連結していることを特徴とする請求項4に記載のスピーカエッジ。
- 請求項6に記載のスピーカエッジを含む振動系部材と当該該振動系部材に支持される静止部材を備え、
前記振動系部材は、振動板と当該振動板を支持するボイスコイルを備え、
前記静止部材は、磁気回路と前記振動系部材を支持する被取付部材を備えることを特徴とする低域再生用のスピーカ。
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US13/990,721 US20130315435A1 (en) | 2010-11-30 | 2010-11-30 | Speaker edge, method for manufacturing same and speaker |
JP2011546360A JP4939669B1 (ja) | 2010-11-30 | 2010-11-30 | スピーカエッジ及びその製造方法、スピーカ |
PCT/JP2010/071407 WO2012073343A1 (ja) | 2010-11-30 | 2010-11-30 | スピーカエッジ及びその製造方法、スピーカ |
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CN103686547A (zh) * | 2013-12-09 | 2014-03-26 | 歌尔声学股份有限公司 | 一种扬声器振膜及其制造方法 |
US9756426B2 (en) * | 2014-09-01 | 2017-09-05 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker |
CN110283389A (zh) * | 2019-06-14 | 2019-09-27 | 歌尔股份有限公司 | 一种发声装置的振膜以及发声装置 |
JP2021164045A (ja) * | 2020-03-31 | 2021-10-11 | パナソニックIpマネジメント株式会社 | スピーカ用振動板、スピーカ、スピーカ用振動板の製造方法、電子機器および、移動体装置 |
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JPS62193399A (ja) * | 1986-02-19 | 1987-08-25 | Pioneer Electronic Corp | スピ−カ用振動体の支持体 |
JP2001359190A (ja) * | 2000-06-16 | 2001-12-26 | Foster Electric Co Ltd | スピーカの振動系支持部材 |
JP2007020139A (ja) * | 2005-06-08 | 2007-01-25 | Onkyo Corp | スピーカー用部材およびその製造方法 |
JP2007266721A (ja) * | 2006-03-27 | 2007-10-11 | Pioneer Electronic Corp | スピーカ振動板用エッジ |
JP2008221555A (ja) * | 2007-03-12 | 2008-09-25 | Kuraray Co Ltd | 積層体およびその製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20230081534A (ko) * | 2021-11-30 | 2023-06-07 | 주식회사 복합재자동화기술 | 현무암 섬유 복합재를 이용한 스피커 유닛 및 스피커 인클로저 |
KR102549512B1 (ko) * | 2021-11-30 | 2023-06-29 | 주식회사 복합재자동화기술 | 현무암 섬유 복합재를 이용한 스피커 유닛 및 스피커 인클로저 |
Also Published As
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JPWO2012073343A1 (ja) | 2014-05-19 |
US20130315435A1 (en) | 2013-11-28 |
JP4939669B1 (ja) | 2012-05-30 |
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