US20090017302A1 - Speaker Damper Substrate - Google Patents
Speaker Damper Substrate Download PDFInfo
- Publication number
- US20090017302A1 US20090017302A1 US11/775,226 US77522607A US2009017302A1 US 20090017302 A1 US20090017302 A1 US 20090017302A1 US 77522607 A US77522607 A US 77522607A US 2009017302 A1 US2009017302 A1 US 2009017302A1
- Authority
- US
- United States
- Prior art keywords
- fiber
- melting
- general
- substrate
- grade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 46
- 239000000835 fiber Substances 0.000 claims abstract description 85
- 238000002844 melting Methods 0.000 claims abstract description 41
- 230000008018 melting Effects 0.000 claims abstract description 8
- 229920000728 polyester Polymers 0.000 claims description 10
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- -1 polyethylene naphthalate Polymers 0.000 claims description 4
- 229920002972 Acrylic fiber Polymers 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000000748 compression moulding Methods 0.000 abstract description 4
- 238000007654 immersion Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 27
- 238000000465 moulding Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 238000002156 mixing Methods 0.000 description 2
- 125000005487 naphthalate group Chemical group 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- 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
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
Definitions
- the present invention is generally related to a substrate structure for a speaker damper having improved mechanical strength, and the composite materials for fabricating the substrate.
- cloth fabric such as the cone paper, damper, or other vibrational pieces.
- the main reason for using the cloth fabric is that the cloth is especially treated to have the proper elasticity and strength, thereby meeting the functional requirements for the speaker during use.
- the cloth fabric requires special treatment before it is used for fabricating the damper.
- the treatment process is as follows: rolls of the cloth fabric are immersed into the liquid resin; they are then taken out, dried, and rolled up as spare cloth fabric material.
- the conveyor conveys rolls of the cloth fabric to the molding device until they reach the position corresponding to where the molding device is arranged, and then is stopped.
- the upper mold and the lower mold of the molding device are clamped to press the cloth fabric therebetween; also the upper mold and the lower mold are provided with a heating device each to raise the temperature of the upper and lower molds while they are pressing the cloth fabric and using electrical power, thereby making the cloth fabric including the resin to have a temperature rise, as well as the resin becoming soften, and then by compression, the cloth fabric can be formed into the damper shape; meanwhile the cut-out operation to form the profile of the damper or the cutting procedure can be performed to cut out the profile of the damper to achieve the required contour for the damper.
- the traditional exclusive cloth fabric used for making the speaker damper is so formed that the transverse yarns 1 (or warp yarns) and the longitudinal yarns 2 (or weft yarns) knitted in an interlaced or intermeshed manner (shown in FIG. 1 ).
- the transverse yarns 1 are able to withstand the stretching force well enough, but the longitudinal yarns 2 are deformed because they are perpendicular to the horizontal stretching force; and vice versa when a longitudinal stretching force is exerted upon the damper, and upon the problem becoming more serious, the audio output quality will be severely affected. Therefore, even though the traditional substrate used for making the speaker damper possesses some degree of strength by undergoing the resin-immersion operation, it cannot improve the mechanical property as a whole.
- a primary objective of the present invention is to provide a damper substrate which overcomes the problems of the traditional damper substrates for suffering from horizontal or longitudinal force, in which the yarns of the damper substrate are displaced to be deformed, thereby influencing audio output quality.
- One feature of the present invention is the mixing of lower-melting fibers with general-grade fibers for making the yarns, and the yarns are knitted to fabricate the substrate especially for the damper.
- the lower-melting fiber is melted to seep into the gaps among the general-grade fibers, thereby making the overlapping area between the weft and the warp yarns bond one another. Therefore, no matter which direction a force is being exerted, the substrate is not deformed or damaged, thereby maintaining the audio output quality at an acceptable level.
- Another feature of the present invention is that a fabric blend is provided to make the damper substrate, and due to a proper proportions of the blending composition, an expected benefit can be achieved.
- the solution of the present invention is to use a plurality of yarns knitted to fabricate the substrate.
- the yarns includes general-grade fiber and lower-melting fiber, whose melting point is lower than the general-grade fiber; and the proportion ratio of the general-grade fiber and the lower-melting fiber is in the range between 95 ⁇ 0%:5 ⁇ 100%.
- the surrounding region of the overlapping area of the yarns are bonded using the lower-melting fibers due to their melting behavior, which makes the substrate to have improved mechanical properties.
- the substrate can perform the resin-immersion process to further improve its strength and compression molding effectiveness.
- the lower-melting fiber in the yarn used for making the substrate, according to the present invention can be intertwined around the general-grade fibers, or blended with the general-grade fibers.
- the lower-melting fiber in the yarn used for making the substrate, according to the present invention can be polyester, acrylic, or polyethylene naphthalate (PEN) fiber, and the general-grade fiber can be aramid, polyester, cotton or silk fiber.
- PEN polyethylene naphthalate
- FIG. 1 is a schematic view showing a plurality of yarns for a traditional damper substrate being deformed and damaged;
- FIG. 2 is a schematic view showing the manner in which the damper according to the present invention behaves in response to a stretching force, where the overlapping area of the weft and warp yarns are not deformed and damaged when bonded together;
- FIG. 3A is a perspective view showing the structure of a yarn made of a lower-melting fiber, according to a first embodiment of the present invention
- FIG. 3B is a perspective schematic view showing the structure of a yarn made of a lower-melting fiber, according a second embodiment of to the present invention.
- FIG. 4 is a schematic view showing the fabrication process of the speaker damper, according to an embodiment of the present invention.
- FIG. 5 is a schematic view showing the manner in which the substrate according to the embodiment of the present invention has the overlapping area of the weft and warp yarns bonded using the lower-melting fibers due to the melting effect.
- a preferred embodiment of a substrate A used for making the speaker damper is so formed that a plurality of transverse yarns 1 and longitudinal yarns 2 are knitted in a interlaced or intermeshed manner (shown in FIG. 2 ). Both the transverse yarns 1 and the longitudinal yarns 2 comprising a lower-melting fiber and a general-grade fiber. Referring to FIG. 2
- a first embodiment of the transverse yarns 1 and longitudinal yarns 2 is such that a plurality of lower-melting fibers 4 are blended with a plurality of general-grade fibers 3 , and then twisted into a spiral to make the yarns; the second embodiment is such that the lower-melting fibers 4 are encapsulated around the general-grade fibers 3 to make the yarns (shown in FIG. 3B ).
- a preferred proportion ratio of the general-grade fiber 3 to the lower-melting fiber 4 is in the range of 95 ⁇ 0%:5 ⁇ 100%.
- the lower-melting fiber 4 in the yarn used for making the substrate, according to the present invention can be polyester, acrylic, or polyethylene naphthalate (PEN) fiber, and the general-grade fiber 3 can be aramid, polyester, cotton, or silk fiber.
- PEN polyethylene naphthalate
- Table 1 below shows the proportion ratio of the lower-melting fiber 4 and the general-grade fiber 3 used for making the substrate according to the present invention, in which the lower-melting fiber 4 , according to the present invention, can be a polyester low melt, an acrylic low melt or a polyethylene naphthalate low melt fiber; and the general fiber 3 can be aramid, polyester, cotton, or silk fiber.
- the proportion ratio of the general-grade fiber and the lower-melting fiber is in the range of 95 ⁇ 0%:5 ⁇ 100%.
- the substrate A made of the aforementioned yarn structure and fabric blend, can be used for fabricating a damper 7 of the speaker via the process shown in FIG. 4 .
- the method of fabrication is as follows: first, prefabricated rolls of the substrate A are conveyed to a pre-heat device 5 via a conveyor for preheating the substrate, thereby softening the lower-melting fiber; then the substrate is molded via a compression molding device and is cut to a required shape for use as the damper 7 of the speaker.
- the lower-melting fiber When the substrate A is compressed and heated during molding, due to the lower melting point of the lower-melting fiber than that of the general-grade fiber, the lower-melting fiber is to be melted first to seep into the gaps among the general-grade fibers, thereby making the overlapping area between the weft and the warp yarns 1 , 2 bonding to one another. Therefore, no matter which direction the force is being applied towards, the substrate will not be deformed or damaged, and higher mechanical rigidity is thus achieved.
- the substrate in addition, apart from the aforementioned fabric, the substrate, according to the present invention, can be further immersed into the liquid resin, so that the resin can be penetrated into the gaps between the fibers so to enhance the molding effectiveness of the substrate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Woven Fabrics (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/775,226 US20090017302A1 (en) | 2007-07-10 | 2007-07-10 | Speaker Damper Substrate |
| TW097140311A TW200913760A (en) | 2007-07-10 | 2008-05-07 | Speaker damper substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/775,226 US20090017302A1 (en) | 2007-07-10 | 2007-07-10 | Speaker Damper Substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20090017302A1 true US20090017302A1 (en) | 2009-01-15 |
Family
ID=40253416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/775,226 Abandoned US20090017302A1 (en) | 2007-07-10 | 2007-07-10 | Speaker Damper Substrate |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20090017302A1 (zh) |
| TW (1) | TW200913760A (zh) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140102825A1 (en) * | 2012-10-16 | 2014-04-17 | Hiroshi Ohara | Speaker damper and manufacturing method of the same |
| TWI562649B (zh) * | 2014-11-25 | 2016-12-11 | ||
| US20170055083A1 (en) * | 2014-07-31 | 2017-02-23 | Sonos, Inc. | Speaker Spider Having Varying Corrugation Geometry |
| CN113235219A (zh) * | 2021-05-25 | 2021-08-10 | 东莞百宏实业有限公司 | 热压绳带及其生产方法 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159618A (en) * | 1978-03-13 | 1979-07-03 | Albany International Corp. | Composite yarn |
| US4259394A (en) * | 1979-09-26 | 1981-03-31 | Huyck Corporation | Papermaking fabrics with enhanced dimensional stability |
| US4632716A (en) * | 1983-06-08 | 1986-12-30 | Wangner Systems Corporation | Woven low permeability fabric and method |
| US4731281A (en) * | 1984-10-29 | 1988-03-15 | Huyck Corporation | Papermakers fabric with encapsulated monofilament yarns |
| US5147721A (en) * | 1989-07-07 | 1992-09-15 | Hexcel Corporation | Ceramic reinforced glass matrix |
| US5200261A (en) * | 1989-12-11 | 1993-04-06 | Toray Industries, Inc. | Foam material reinforced with composite fibers |
| US5776597A (en) * | 1995-02-23 | 1998-07-07 | Teijin Limited | Speaker damper |
| US5878150A (en) * | 1994-03-28 | 1999-03-02 | Matsushita Electric Industrial Co., Ltd. | Damper for a loudspeaker and a method for producing the same |
| US20030221740A1 (en) * | 2002-05-30 | 2003-12-04 | Hiroshi Ohara | Method for making an elastic fabric for a damper and the structure thereof |
| US20060093817A1 (en) * | 2004-10-28 | 2006-05-04 | Pioneer Corporation | Damper for speaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006238077A (ja) * | 2005-02-25 | 2006-09-07 | Pioneer Electronic Corp | スピーカ装置 |
-
2007
- 2007-07-10 US US11/775,226 patent/US20090017302A1/en not_active Abandoned
-
2008
- 2008-05-07 TW TW097140311A patent/TW200913760A/zh unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159618A (en) * | 1978-03-13 | 1979-07-03 | Albany International Corp. | Composite yarn |
| US4259394A (en) * | 1979-09-26 | 1981-03-31 | Huyck Corporation | Papermaking fabrics with enhanced dimensional stability |
| US4632716A (en) * | 1983-06-08 | 1986-12-30 | Wangner Systems Corporation | Woven low permeability fabric and method |
| US4731281A (en) * | 1984-10-29 | 1988-03-15 | Huyck Corporation | Papermakers fabric with encapsulated monofilament yarns |
| US5147721A (en) * | 1989-07-07 | 1992-09-15 | Hexcel Corporation | Ceramic reinforced glass matrix |
| US5200261A (en) * | 1989-12-11 | 1993-04-06 | Toray Industries, Inc. | Foam material reinforced with composite fibers |
| US5878150A (en) * | 1994-03-28 | 1999-03-02 | Matsushita Electric Industrial Co., Ltd. | Damper for a loudspeaker and a method for producing the same |
| US5776597A (en) * | 1995-02-23 | 1998-07-07 | Teijin Limited | Speaker damper |
| US20030221740A1 (en) * | 2002-05-30 | 2003-12-04 | Hiroshi Ohara | Method for making an elastic fabric for a damper and the structure thereof |
| US20060093817A1 (en) * | 2004-10-28 | 2006-05-04 | Pioneer Corporation | Damper for speaker |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140102825A1 (en) * | 2012-10-16 | 2014-04-17 | Hiroshi Ohara | Speaker damper and manufacturing method of the same |
| US8813906B2 (en) * | 2012-10-16 | 2014-08-26 | Hiroshi Ohara | Speaker damper and manufacturing method of the same |
| US20170055083A1 (en) * | 2014-07-31 | 2017-02-23 | Sonos, Inc. | Speaker Spider Having Varying Corrugation Geometry |
| US9918167B2 (en) * | 2014-07-31 | 2018-03-13 | Sonos, Inc. | Speaker spider having varying corrugation geometry |
| TWI562649B (zh) * | 2014-11-25 | 2016-12-11 | ||
| CN113235219A (zh) * | 2021-05-25 | 2021-08-10 | 东莞百宏实业有限公司 | 热压绳带及其生产方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI489885B (zh) | 2015-06-21 |
| TW200913760A (en) | 2009-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |