JPS64878B2 - - Google Patents
Info
- Publication number
- JPS64878B2 JPS64878B2 JP1113083A JP1113083A JPS64878B2 JP S64878 B2 JPS64878 B2 JP S64878B2 JP 1113083 A JP1113083 A JP 1113083A JP 1113083 A JP1113083 A JP 1113083A JP S64878 B2 JPS64878 B2 JP S64878B2
- Authority
- JP
- Japan
- Prior art keywords
- base fabric
- resin layer
- micropores
- edge
- speaker
- 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.)
- Expired
Links
- 239000004744 fabric Substances 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 31
- 239000011347 resin Substances 0.000 claims description 31
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009940 knitting Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 229920001568 phenolic resin Polymers 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
産業上の利用分野
この発明は一般音響機器に適用するスピーカ用
エツジに関するものである。
従来例の構成とその問題点
スピーカには、第１図および第２図に示すよう
に、コーン振動板１の端部に布エツジ２が取付け
られている。３はボールピース付プレート、４は
リング状マグネツト、５はトツププレート、６は
ボイスコイル、７はダンパ、８はダストキヤツ
プ、９はフレーム、１０はガスケツトである。こ
の布エツジ２は、第３図に示すように木綿繊維で
ある縦糸１１と横糸１２を編み上げて基布１３を
形成し、目止め材としてSBR、ウレタン系ゴム、
アクリル系ゴム等のゴム系樹脂１４を処理し、こ
れに熱硬化性樹脂１５、たとえばフエノール系樹
脂を含浸加工させた後、加熱加圧成形加工してス
ピーカ用布エツジ２を得る。
ところが、木綿を基布とした布エツジ２は、耐
湿性が悪く、高温多湿雰囲気中において変形を生
じ易く、また耐熱性、耐候性も良好とは言えず、
屋外スピーカや車載用スピーカ等に利用する場
合、劣化によつて柔軟性がなくなつたり、強度低
下によつてエツジ２に亀裂が生ずることもあつ
た。特に、近年のスピーカの高入力化により、上
記の要因からスピーカ異常音の発生が数多く生じ
た。
これらの欠点を防止するために、上記木綿繊維
に代え、第４図に示すような有機溶剤や水分の影
響の少ない疎水性繊維、たとえばポリエステル系
繊維１６で基布１３を構成する提案がなされた
が、これら繊維１６の布地はゴム系の樹脂やフエ
ノール系の成形用樹脂の含浸が非常に困難である
という別の欠点を有していた。
発明の目的
この発明の目的は、耐候性、耐湿性に優れ、経
時変化も少なく、目止用樹脂層や成形用樹脂層を
基布へ強固に固着できるスピーカ用エツジを提供
することである。
発明の構成
この発明のスピーカ用エツジは、繊維表面に繊
維内方に延びる多数の微細孔を設けた疎水性繊維
を編み上げて形成した基布と、この基布の一面側
に積層形成して一部を前記疎水性繊維の微細孔へ
侵入させた成形用樹脂層と、前記基布の他面側に
積層形成して一部を前記疎水性繊維の微細孔へ侵
入させた目止用樹脂層とを備えたものである。こ
のように、疎水性繊維で基布を形成したため、耐
候性、耐湿性に優れ、経時変化も少なくなる。ま
た、疎水性繊維に微細孔を設けて、そこに目止用
樹脂層や成形用樹脂層の一部をそれぞれ侵入させ
たため、これら樹脂層を基布へ強固に固着でき
る。
実施例の説明
この発明の一実施例を第５図および第６図を用
いて説明する。このスピーカ用エツジは、従来の
木綿繊維に代え、第５図に示すポリエステル繊維
１７を用いて第６図に示す基布１８を形成する。
このポリエステル繊維１７は、繊維中央に繊維長
手方向に延びる中空部１７ａを形成するととも
に、繊維表面に直径0.01〜3μｍの微細孔１７ｂを
均一に分散形成して、一部の微細孔１７ｂを繊維
表面から中空部１７ａへ貫通させている。このよ
うな繊維１７は現在では、帝人(株)から「ウエルキ
ー」として発売されている。すなわち、この実施
例のスピーカ用エツジは、第６図に示すように、
上記ポリエステル繊維１７で構成した縦糸１９と
横糸２０を編み上げて基布１８を形成し、これに
フエノール樹脂、ゴム系樹脂を含浸し、熱成形加
工によつて形成する。このようにして形成する
と、繊維１７には微細孔１７ｂが設けられている
ため、毛細管現象により成形用フエノール樹脂や
目止用ゴム系樹脂が微細孔１７ｂから中空部１７
ａへ容易に浸透し、こうして基布１８の一面側
に、一部が微細孔１７ｂから中空部１７ａへ侵入
した熱硬化性樹脂層２１が積層形成されるととも
に、基布１８の他面側に一部が微細孔１７ｂから
中空部１７ａへ侵入したゴム系樹脂層２２が積層
形成される。なお、基布１８に対し、フエノール
樹脂含浸率は２〜20重量％、ゴム系樹脂含浸率は
５〜50重量％とする。また、成形加工は160〜200
℃、５〜10secの条件で行なう。こうして得られ
たエツジ２３は、疎水性繊維であるポリエステル
繊維１７で基布１８を形成するため、耐湿性にす
ぐれ、耐候性も良好で、木綿を基布とした布エツ
ジよりも耐熱性、経時変化の少ない性能を有し、
変形も少ないという効果が得られる。また、ゴム
系樹脂層２２や熱硬化性樹脂層２１の一部が繊維
１７の中空部１７ａや微細孔１７ｂに侵入してい
るため、両樹脂層２１，２２を基布１８へ強固に
固着できる。
実験例
上記ポリエステル繊維１７を用いて、糸の太さ
が60番手相当（２本撚り）で、打込み数が縦90本
×横92本の基布を形成し、これにアクリルとウレ
タン共重合体のゴム系樹脂を30重量％含浸後、フ
エノール樹脂を10重量％含浸処理によつてエツジ
布をつくり、180℃×5secにて成形加工して本実
験例のエツジを得る。これと従来品との比較を行
なつた結果は、以下のとおりである。
(1) 耐湿性…55℃の雰囲気中に500Hr放置後、エ
ツジの状態を観察。コーンは湿度に変形の少な
いポリプロピレン樹脂を利用し、これにエツジ
を貼り合わせたもので比較した。
INDUSTRIAL APPLICATION FIELD This invention relates to a speaker edge applied to general audio equipment. Conventional Structure and its Problems As shown in FIGS. 1 and 2, a fabric edge 2 is attached to the end of a cone diaphragm 1 in a speaker. 3 is a plate with a ball piece, 4 is a ring-shaped magnet, 5 is a top plate, 6 is a voice coil, 7 is a damper, 8 is a dust cap, 9 is a frame, and 10 is a gasket. As shown in FIG. 3, this fabric edge 2 is made by knitting warp threads 11 and weft threads 12, which are cotton fibers, to form a base fabric 13, and as a sealing material, SBR, urethane rubber, etc.
A rubber resin 14 such as acrylic rubber is treated, impregnated with a thermosetting resin 15, such as a phenolic resin, and then heated and pressure molded to obtain a speaker cloth edge 2. However, the cloth edge 2, which is made of cotton as a base fabric, has poor moisture resistance and is easily deformed in a high temperature and humid atmosphere, and also has poor heat resistance and weather resistance.
When used in outdoor speakers, in-vehicle speakers, etc., flexibility may be lost due to deterioration, and cracks may occur in the edges 2 due to decreased strength. In particular, as the input power of speakers has increased in recent years, abnormal speaker noise has frequently occurred due to the above-mentioned factors. In order to prevent these drawbacks, it has been proposed that the base fabric 13 be made of hydrophobic fibers that are less affected by organic solvents and moisture, such as polyester fibers 16, as shown in FIG. 4, instead of the cotton fibers mentioned above. However, the fabric of these fibers 16 had another drawback in that it was very difficult to impregnate it with rubber-based resin or phenolic-based molding resin. Purpose of the Invention The purpose of the present invention is to provide an edge for a speaker that has excellent weather resistance and moisture resistance, has little deterioration over time, and is capable of firmly adhering a sealing resin layer and a molding resin layer to a base fabric. Structure of the Invention The edge for a speaker of the present invention comprises a base fabric formed by knitting hydrophobic fibers having a large number of micropores extending inwardly on the fiber surface, and a base fabric laminated on one side of the base fabric. a molding resin layer in which a portion of the resin layer penetrates into the micropores of the hydrophobic fiber; and a sealing resin layer that is laminated on the other side of the base fabric and partially penetrates into the micropores of the hydrophobic fiber. It is equipped with the following. In this way, since the base fabric is formed from hydrophobic fibers, it has excellent weather resistance and moisture resistance, and has little deterioration over time. In addition, since micropores are provided in the hydrophobic fibers and a portion of the filler resin layer and the molding resin layer are penetrated into the micropores, these resin layers can be firmly fixed to the base fabric. DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 5 and 6. This speaker edge uses polyester fibers 17 shown in FIG. 5 in place of conventional cotton fibers to form a base fabric 18 shown in FIG. 6.
This polyester fiber 17 has a hollow part 17a extending in the longitudinal direction of the fiber at the center of the fiber, and micropores 17b with a diameter of 0.01 to 3 μm are uniformly distributed on the fiber surface, so that some of the micropores 17b are formed on the fiber surface. It is made to penetrate from to the hollow part 17a. Such fiber 17 is currently sold by Teijin Ltd. as "Welky". That is, the speaker edge of this embodiment has the following structure as shown in FIG.
A base cloth 18 is formed by knitting warp yarns 19 and weft yarns 20 made of the polyester fibers 17, impregnated with a phenolic resin and a rubber resin, and formed by thermoforming. When formed in this way, since the fibers 17 are provided with micropores 17b, the phenolic resin for molding and the rubber resin for sealing are allowed to flow through the micropores 17b into the hollow part 17 due to capillary action.
The thermosetting resin layer 21, which partially penetrates into the hollow part 17a through the micropores 17b, is formed on one side of the base fabric 18 in a laminated manner, and on the other side of the base fabric 18. A rubber-based resin layer 22, a portion of which has penetrated into the hollow portion 17a through the micropores 17b, is laminated. The impregnation rate of the phenolic resin is 2 to 20% by weight, and the impregnation rate of the rubber resin is 5 to 50% by weight with respect to the base fabric 18. In addition, molding processing is 160 to 200
C. for 5 to 10 seconds. Since the edge 23 thus obtained has a base fabric 18 made of polyester fiber 17, which is a hydrophobic fiber, it has excellent moisture resistance and weather resistance, and has better heat resistance and aging resistance than fabric edge based on cotton. Has performance with little change,
The effect of less deformation can be obtained. Further, since a part of the rubber resin layer 22 and the thermosetting resin layer 21 penetrates into the hollow portion 17a and the micropores 17b of the fibers 17, both the resin layers 21 and 22 can be firmly fixed to the base fabric 18. . Experimental Example Using the above polyester fiber 17, a base fabric with a thread thickness equivalent to 60 thread count (two strands twisted) and a thread count of 90 vertically x 92 horizontally was formed, and acrylic and urethane copolymer was applied to this. After impregnating 30% by weight of rubber-based resin, an edge cloth was made by impregnating it with 10% by weight of phenolic resin, and was molded at 180°C for 5 seconds to obtain the edge of this experimental example. The results of a comparison between this and conventional products are as follows. (1) Moisture resistance... Observe the condition of the edges after leaving it in an atmosphere at 55℃ for 500 hours. The cone was made of polypropylene resin, which does not deform much under humidity, and an edge was attached to it for comparison.
【表】【table】
【表】
(2) 耐候試験…150Hr紫外線照射後、f0変化およ
び引裂強度（たて方向）を測定した。[Table] (2) Weather resistance test: After 150 hours of ultraviolet irradiation, f 0 change and tear strength (vertical direction) were measured.
【表】【table】
【表】
両方とも変形はほとんどなかつたが、木綿を基
布としたエツジの劣化が大きい結果となつた。
(3) 耐熱試験ー85℃の温度槽に100Hr放置後、物
理強度の変化（引裂強度）を測定した。[Table] There was almost no deformation in both cases, but the edge, which was made of cotton as a base fabric, showed significant deterioration. (3) Heat resistance test - After being left in a temperature chamber at 85°C for 100 hours, changes in physical strength (tear strength) were measured.
【表】
本発明品は耐熱性においても木綿基布を布地と
したエツジよりも強度劣化が少ない。
発明の効果
この発明のスピーカ用エツジによれば、耐候
性、耐湿性に優れ、経時変化も少なく、目止用樹
脂層や成形用樹脂層を基布へ強固に固着できると
いう効果が得られる。[Table] In terms of heat resistance, the product of the present invention shows less deterioration in strength than EDGE, which uses a cotton base fabric. Effects of the Invention According to the speaker edge of the present invention, it has excellent weather resistance and moisture resistance, has little change over time, and has the effect of firmly adhering the sealing resin layer and the molding resin layer to the base fabric.
第１図はスピーカの判断面図、第２図は従来例
のスピーカ用エツジの断面図、第３図はその拡大
断面図、第４図は提案例に用いるポリエステル繊
維の斜視図、第５図はこの発明の一実施例に用い
るポリエステル繊維の斜視図、第６図はこの実施
例の要部拡大断面図である。
１７…ポリエステル繊維、１７ａ…中空部、１
７ｂ…微細孔、１８…基布、２１…成形用熱硬化
性樹脂層、２２…目止用ゴム系樹脂層、２３…エ
ツジ。
Fig. 1 is a judgment side view of the speaker, Fig. 2 is a sectional view of a conventional speaker edge, Fig. 3 is an enlarged sectional view thereof, Fig. 4 is a perspective view of the polyester fiber used in the proposed example, and Fig. 5. 6 is a perspective view of a polyester fiber used in an embodiment of the present invention, and FIG. 6 is an enlarged sectional view of a main part of this embodiment. 17... Polyester fiber, 17a... Hollow part, 1
7b... Micropores, 18... Base fabric, 21... Thermosetting resin layer for molding, 22... Rubber resin layer for sealing, 23... Edge.
Claims (1)
設けた疎水性繊維を編み上げて形成した基布と、
この基布の一面側に積層形成して一部を前記疎水
性繊維の微細孔へ侵入させた成形用樹脂層と、前
記基布の他面側に積層形成して一部を前記疎水性
繊維の微細孔へ侵入させた目止用樹脂層とを備え
たスピーカ用エツジ。 ２ 前記疎水性繊維は、その中央部に繊維長手方
向に延びて前記微細孔と連通した中空部を形成
し、その中空部に前記成形用樹脂層と前記目止用
樹脂層の一部をそれぞれ侵入させている特許請求
の範囲第１項記載のスピーカ用エツジ。[Scope of Claims] 1. A base fabric formed by knitting hydrophobic fibers having a large number of micropores extending inward on the fiber surface;
A molding resin layer is laminated on one side of the base fabric and a part thereof penetrates into the micropores of the hydrophobic fibers, and a molding resin layer is laminated on the other side of the base fabric and a part of the hydrophobic fibers are laminated on the other side of the base fabric. A speaker edge equipped with a sealing resin layer that penetrates into the micropores of the speaker. 2. The hydrophobic fiber has a hollow part extending in the longitudinal direction of the fiber and communicating with the micropores in the center thereof, and a part of the molding resin layer and the sealing resin layer are respectively placed in the hollow part. The speaker edge according to claim 1, wherein the speaker edge is intruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113083A JPS59135998A (en) | 1983-01-25 | 1983-01-25 | Edge for speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113083A JPS59135998A (en) | 1983-01-25 | 1983-01-25 | Edge for speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59135998A JPS59135998A (en) | 1984-08-04 |
| JPS64878B2 true JPS64878B2 (en) | 1989-01-09 |
Family
ID=11769433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1113083A Granted JPS59135998A (en) | 1983-01-25 | 1983-01-25 | Edge for speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59135998A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3893540B2 (en) * | 2002-05-20 | 2007-03-14 | 松下電器産業株式会社 | Speaker diaphragm edge and manufacturing method thereof |
-
1983
- 1983-01-25 JP JP1113083A patent/JPS59135998A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59135998A (en) | 1984-08-04 |
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