JPH01277100A - Diaphragm for thermal resistant speaker - Google Patents
Diaphragm for thermal resistant speakerInfo
- Publication number
- JPH01277100A JPH01277100A JP10689188A JP10689188A JPH01277100A JP H01277100 A JPH01277100 A JP H01277100A JP 10689188 A JP10689188 A JP 10689188A JP 10689188 A JP10689188 A JP 10689188A JP H01277100 A JPH01277100 A JP H01277100A
- Authority
- JP
- Japan
- Prior art keywords
- aromatic polyester
- polyester resin
- diaphragm
- resin
- sheet
- 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.)
- Pending
Links
- 125000003118 aryl group Chemical group 0.000 claims abstract description 21
- 229920001225 polyester resin Polymers 0.000 claims abstract description 21
- 239000004645 polyester resin Substances 0.000 claims abstract description 21
- 238000003856 thermoforming Methods 0.000 claims abstract description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 6
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 9
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 6
- 239000012744 reinforcing agent Substances 0.000 abstract description 6
- 150000002484 inorganic compounds Chemical class 0.000 abstract description 3
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 229920002521 macromolecule Polymers 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- -1 flake) Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電気音響変換器であるスピーカに用いられる耐
熱性スピーカ用振動板に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat-resistant speaker diaphragm used in a speaker, which is an electroacoustic transducer.
（従来の技術）
従来よりスピーカ用振動板の材料としては、種々のもの
が用いられているが、最近、いわゆ乞液晶ポリマー、す
なわち熱可塑性液晶高分子である全芳香族ポリエステル
樹脂をその材料として使用した振動板が提案ないし提供
されている。(Prior Art) Various materials have been used for speaker diaphragms, but recently, so-called liquid crystal polymers, fully aromatic polyester resins, which are thermoplastic liquid crystal polymers, have been used as materials. Vibration plates used as such have been proposed or provided.
（発明が解決しようとする課Ｂ）
二の場合、従来では、射出成形機より、全芳香族ポリエ
ステル樹脂を金型に押出し成形するといった一般の射出
成形が取られているが、全芳香族ポリエステル樹脂及び
その強化樹脂は耐熱性が強い為に熱可塑性樹脂であって
も一般の熱可塑性樹脂（ＡＢＳ、ＰＳ、Ａｓ、ＰＶＣ）
と比較しテシリンダーの温度が高＜ （４００°Ｃ以上
）、押し出し圧力も高く、射出成形機が大型となり、一
般の成形機は使用できない欠点がある。(Problem B to be solved by the invention) In the second case, conventionally, general injection molding is used in which wholly aromatic polyester resin is extruded into a mold using an injection molding machine, but wholly aromatic polyester resin Resin and its reinforced resin have strong heat resistance, so even if it is a thermoplastic resin, it can be used as a general thermoplastic resin (ABS, PS, As, PVC).
Compared to conventional molding machines, the temperature of the cylinder is high (over 400°C), the extrusion pressure is also high, and the injection molding machine is large, making it impossible to use a general molding machine.
また、金型にあっても締付は圧が高くなるために大型と
なり、製造コスト面でも不利となるという課題があった
。Furthermore, even in the case of molds, the tightening pressure is high, resulting in large sizes, which is disadvantageous in terms of manufacturing costs.
本発明は上記の点に鑑み提案されたもので、その目的と
するところは、大型の射出成形機が不用であり、製造を
容易とした耐熱性スピーカ用振動板を提供することにあ
る。The present invention has been proposed in view of the above points, and its purpose is to provide a heat-resistant speaker diaphragm that does not require a large injection molding machine and is easy to manufacture.
（課題を解決するための手段）
本発明では、超耐熱性、超高強度、超高弾性率を有する
熱可塑性液晶高分子である全芳香族ポリエステル樹脂及
び強化全芳香族ポリエステル樹脂のシートまたはフィル
ムを熱成形して振動板を得るようにし、上記目的を達成
している。(Means for Solving the Problems) In the present invention, sheets or films of wholly aromatic polyester resin and reinforced wholly aromatic polyester resin, which are thermoplastic liquid crystal polymers having ultra-heat resistance, ultra-high strength, and ultra-high modulus, The above objective is achieved by thermoforming the diaphragm to obtain a diaphragm.
（作用）
全芳香族ポリエステル樹脂を用いて一挙にコーン状の振
動板を得るのではなく、先ず平板状のシートまたはフィ
ルムを形成し、これを振動板形状に熱成形して振動板と
したから、製造設備面、コスト面等において有利として
いる。(Function) Rather than obtaining a cone-shaped diaphragm all at once using wholly aromatic polyester resin, we first form a flat sheet or film and then thermoform this into the diaphragm shape to make the diaphragm. It is said to be advantageous in terms of manufacturing equipment, cost, etc.
（実施例）
本発明では全芳香族ポリエステル及び強化全芳香族ポリ
エステル樹脂を射出成形機、押し出し成形機で、第１図
に示すように、振動板の直径ａ形状に合うシートまたは
フィルム（１）を製造する。(Example) In the present invention, wholly aromatic polyester and reinforced wholly aromatic polyester resin are molded using an injection molding machine or an extrusion molding machine, and as shown in FIG. Manufacture.
このシートまたはフィルムは製造時すでに、樹脂は放射
状（図参照）に配向し、曲げ方向の曲げ弾性率は向上し
、周辺方向の強度は一段と向上する特徴ある振動板とな
り、液晶高分子の特徴を十分に生かしたものとなる。When this sheet or film is manufactured, the resin is already oriented radially (see figure), the bending elastic modulus in the bending direction is improved, and the strength in the peripheral direction is further improved, making it a distinctive diaphragm. It will be fully utilized.
なお、全芳香族ポリエステル樹脂樹脂とは下記のような
ものである。In addition, the wholly aromatic polyester resin is as follows.
ＣＩ。C.I.
ＣＨｓ ＯＯｎ
ＡＲ
ＯＯｎ
Ｏｎ
０ ０ ａ＝２．４ ａ＝２ＰＥＴ
＝ ４ ＰＢＴ
Ａ＋Ｂ十Ｃ＋Ｄ＋Ｅ＋Ｆ＋Ｇミ１００％Ａ−Ｂ−Ｃ＝Ｄ
＝Ｅ−Ｆ−Ｇ＝０〜１００％の組成を持つポリエステル
樹脂である。CHs OOn AR OOn On 0 0 a=2.4 a=2PET
= 4 PBT A + B + C + D + E + F + G Mi 100% A-B-C = D
It is a polyester resin having a composition of =E-F-G=0 to 100%.
また、強化全芳香族ポリエステル樹脂とは、樹脂に対し
て強化剤を１〜５０％添加したものである。Further, the reinforced wholly aromatic polyester resin is one in which 1 to 50% of a reinforcing agent is added to the resin.
強化剤としては繊維状と無機化合物とがある。There are two types of reinforcing agents: fibrous and inorganic compounds.
に）繊維状強化剤としては、前記無機繊維及び有機繊維
の繊維長０．１〜５′″へのものを熱可塑性液晶高分子
である全芳香族ポリエステル樹脂に対して１〜５０％添
付したものである。2) As a fibrous reinforcing agent, 1 to 50% of the above-mentioned inorganic fibers and organic fibers with a fiber length of 0.1 to 5'' were added to the fully aromatic polyester resin, which is a thermoplastic liquid crystal polymer. It is something.
（ロ）無機化合物強化剤としては、
石英 マイカ
黒鉛 チタン酸カリうムライス力−石コウ
タルク
ガラス（粉末、フレーク）
石綿
等を全芳香族ポリエステル樹脂に対して１〜５０％添加
したものである。(b) As the inorganic compound reinforcing agent, 1 to 50% of quartz, mica graphite, potassium titanate, talc glass (powder, flake), asbestos, etc. are added to the wholly aromatic polyester resin.
この樹脂は単なるエボキン樹脂に比較して下記の点で性
能が優れている。This resin has superior performance in the following points compared to simple Evokin resin.
（１）曲げ強度 曲げ弾性率の向上
（２）引張り強度 引張り弾性率の向上（３）タフネス
の向上
（４）クリープ性の向上
繊維強化により熱クリープ特性は増加する。(1) Improvement in bending strength and flexural modulus (2) Improvement in tensile strength and tensile modulus (3) Improvement in toughness (4) Improvement in creep property Thermal creep properties are increased by fiber reinforcement.
（５）耐湿強度の向上
（４）内部損失の向上
液晶高分子中の結晶量摩擦の増加による向上（５）熱変
形温度 ＨＤＴ
１５０℃以上 ＡＳＴＭ Ｄ−６４８（６）Ｍ燃
性
ＵＬ−９４、ｖ−１以上
（７）耐ハンダ特性良好 ２６０〜２８０’Ｃ−１０秒
（８）耐絶縁性が良好
■表面抵抗率（ＡＳＴＭＤ２５７）
ＩＸ１６”Ω
■絶縁破壊強さ（ＡＳＴＭＤ１４）
２１ ＫＶ／ａｍ以上
（カーボン、金属繊維、黒鉛を除く）
上記の構成によって製造されたシートまたはフィルム１
は、その剛性等の機械的性質の向上とともに、耐熱性が
ＨＤ）１２５０″Ｃ以上、難燃性がｖ−０となって何れ
も向上することが確認されている。(5) Improved moisture resistance strength (4) Improved internal loss Improved amount of crystals in liquid crystal polymer by increasing friction (5) Heat distortion temperature HDT 150°C or higher ASTM D-648 (6) M flammability UL-94, v-1 or more (7) Good solder resistance 260-280'C-10 seconds (8) Good insulation resistance ■Surface resistivity (ASTMD257) IX16"Ω ■Dielectric breakdown strength (ASTMD14) 21 KV/am or more (Excluding carbon, metal fibers, and graphite) Sheet or film manufactured by the above structure 1
It has been confirmed that, along with improvements in mechanical properties such as rigidity, heat resistance is improved to HD) 1250''C or higher, and flame retardance is improved to v-0.
しかして、本発明では、上記のシートまたはフィルム１
を、真空成形法、圧空成形法、通常のプレス法等によっ
て振動板に成形している。Therefore, in the present invention, the above sheet or film 1
The diaphragm is formed into a diaphragm using a vacuum forming method, a pressure forming method, a normal pressing method, or the like.
第２図は真空成形法による場合の実施例であり、２は遠
赤外ヒータ、１は前述のシートまたはフィルム、３はそ
の周辺に設けられたシワ押えガイド、４は金型であり、
図示しない真空ポンプでシートまたはフィルム１を吸引
し、かつ遠赤外ヒータ２によってシートまたはフィルム
１を振動板形状に熱成形している。FIG. 2 shows an embodiment using the vacuum forming method, where 2 is a far-infrared heater, 1 is the sheet or film described above, 3 is a wrinkle suppressing guide provided around it, and 4 is a mold.
A vacuum pump (not shown) sucks the sheet or film 1, and a far-infrared heater 2 heat-forms the sheet or film 1 into the shape of a diaphragm.
また、第３図は圧空成形法による場合の実施例であり、
５は遠赤外ヒータ、６は金型、７は加圧空気（加熱空気
）の送風口、８は型であり、上方からの加圧空気及び金
型６によってシートまたはフィルム１金型８に押し付け
、かつ遠赤外ヒータ５で加熱することにより、シートま
たはフィルム１を振動板形状に熱成形し、本発明の振動
板を得ている。In addition, FIG. 3 shows an example in which the pressure forming method is used.
5 is a far-infrared heater, 6 is a mold, 7 is a pressurized air (heated air) outlet, and 8 is a mold. By pressing and heating with a far-infrared heater 5, the sheet or film 1 is thermoformed into the shape of a diaphragm, thereby obtaining the diaphragm of the present invention.
さらに、第４図は従来より使用されているＰＰ（ポリプ
ロピレン）シート用の金型あるいはコーン紙用金型を用
いた通常のプレス法による場合で、９はヒータ、１０は
金型、１１は金型、１２はヒータであり、間にシートま
たはフィルム１（図示せず）を配置し、金型１０を下動
して熱成形し、振動板を得るようにしたものである。Furthermore, FIG. 4 shows the case of a conventional pressing method using a conventionally used mold for PP (polypropylene) sheets or a mold for cone paper, where 9 is a heater, 10 is a mold, and 11 is a metal mold. The mold 12 is a heater, and a sheet or film 1 (not shown) is placed between them, and the mold 10 is moved down to perform thermoforming to obtain a diaphragm.
（発明の効果）
以上のように本発明によれば、先ず、全芳香族ポリエス
テル樹脂及び強化全芳香族ポリエステル樹脂をシートま
たはフィルムとし、このシートまたはフィルムを熟成形
して振動板としたから、従前のように大型の射出成形機
、金型等が不用で、かつ製造が容易であるという効果が
ある。(Effects of the Invention) As described above, according to the present invention, first, a wholly aromatic polyester resin and a reinforced wholly aromatic polyester resin are made into a sheet or film, and this sheet or film is aged to form a diaphragm. It has the advantage that it does not require large injection molding machines, molds, etc. as in the past, and is easy to manufacture.
このため、量産に適し、製造コスト面でも有利であり、
コストダウンを図り得る効果がある。Therefore, it is suitable for mass production and is advantageous in terms of manufacturing costs.
This has the effect of reducing costs.
第１図は本発明のシートまたはフィルムの平面１・・・
シートまたはフィルム
第１図
第３図
第４図
手続ネ甫装置（自発）
１、事件の表示
昭和６３年 特 許 願 第１０６８９１号２、発明の
名称
耐熱性スピーカ用振動板
３、補正をする者
事件との関係 特許出願人
名 称 フォスター電機株式会社４、代 理
人 〒１６０
住 所 東京都新宿区西新宿３丁目３番２３号フ
ァミール西新宿６０３号
電話（０３）３４６−８４６７番
氏 名 弁理士（８１２５）＾ 山 道
夫５、補正の対象
６、補正の内容
（１）明細書第６頁第２行目の「熱クリープ特性」を「
耐熱クリープ特性」と補正する。
（２）同書同頁第４行目のｒ （４） Ｊをｒ （６）
Ｊと補正する。
（３）同書同頁第６行目のｒ （５） Ｊをｒ （７）
Ｊと補正する。
（４１１ｉｍｌ同頁第８行目の「（６）コをｒ （８）
Ｊと補正する。
（５）同畠同頁第１０行目のｒ （７） Ｊをｒ （９
） Ｊと補正する。
（６）同書同頁第１１行目のｒ （８） Ｊをｒ （１
０） Ｊと補正する。FIG. 1 shows a plane 1 of the sheet or film of the present invention...
Sheet or film Fig. 1 Fig. 3 Fig. 4 Procedure information device (voluntary) 1. Indication of the incident 1988 Patent Application No. 106891 2. Name of the invention Heat-resistant speaker diaphragm 3. Person making the amendment Relationship to the case Patent applicant name Foster Electric Co., Ltd. 4, agent
Person: 160 Address: 603 Family Nishi-Shinjuku, 3-3-23 Nishi-Shinjuku, Shinjuku-ku, Tokyo Telephone: (03) 346-8467 Name: Patent Attorney (8125) ^ Yamamichi
Husband 5, Subject of amendment 6, Contents of amendment (1) Changed "Thermal creep characteristics" in the second line of page 6 of the specification to "
Corrected as "heat resistant creep characteristics". (2) r on the 4th line of the same page in the same book (4) r for J (6)
Correct with J. (3) Same book, same page, line 6, r (5) J to r (7)
Correct with J. (411 iml same page 8th line “(6) kowo r (8)
Correct with J. (5) r on the 10th line of the same page on the same page (7) r for J (9
) Correct as J. (6) Same book, same page, line 11, r (8) J to r (1
0) Correct as J.
Claims (1)
高分子である全芳香族ポリエステル樹脂及び強化全芳香
族ポリエステル樹脂のシートまたはフィルムを熱成形し
てなる耐熱性スピーカ用振動板。A heat-resistant speaker diaphragm made by thermoforming a sheet or film of wholly aromatic polyester resin and reinforced wholly aromatic polyester resin, which are thermoplastic liquid crystal polymers having ultra-heat resistance, ultra-high strength, and ultra-high modulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10689188A JPH01277100A (en) | 1988-04-28 | 1988-04-28 | Diaphragm for thermal resistant speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10689188A JPH01277100A (en) | 1988-04-28 | 1988-04-28 | Diaphragm for thermal resistant speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01277100A true JPH01277100A (en) | 1989-11-07 |
Family
ID=14445102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10689188A Pending JPH01277100A (en) | 1988-04-28 | 1988-04-28 | Diaphragm for thermal resistant speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01277100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968684A (en) * | 2019-03-13 | 2019-07-05 | 东莞涌韵音膜有限公司 | The manufacture craft of the compound ring of liquid |
-
1988
- 1988-04-28 JP JP10689188A patent/JPH01277100A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968684A (en) * | 2019-03-13 | 2019-07-05 | 东莞涌韵音膜有限公司 | The manufacture craft of the compound ring of liquid |
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