WO1989003633A1 - Bobbin for voice coil - Google Patents

Bobbin for voice coil Download PDF

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Publication number
WO1989003633A1
WO1989003633A1 PCT/JP1987/000780 JP8700780W WO8903633A1 WO 1989003633 A1 WO1989003633 A1 WO 1989003633A1 JP 8700780 W JP8700780 W JP 8700780W WO 8903633 A1 WO8903633 A1 WO 8903633A1
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WO
WIPO (PCT)
Prior art keywords
sheet material
bobbin
coil
uncured
composite sheet
Prior art date
Application number
PCT/JP1987/000780
Other languages
French (fr)
Japanese (ja)
Inventor
Yasuyuki Suzuki
Original Assignee
Suzuki Kanshi Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzuki Kanshi Co., Ltd. filed Critical Suzuki Kanshi Co., Ltd.
Priority to PCT/JP1987/000780 priority Critical patent/WO1989003633A1/en
Publication of WO1989003633A1 publication Critical patent/WO1989003633A1/en

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Classifications

    • 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
    • H04R9/046—Construction

Definitions

  • the present invention relates to a coil bobbin made of a composite sheet material in which a synthetic resin is immersed in a glass fiber sheet material.
  • Composite sheets made of glass fin's ⁇ sheets soaked with synthetic resin are widely used as materials for various industrial products.
  • This type of composite sheet material includes uncured resin (prepreg material) and fully cured (cured material) of soaking resin (it was called a uniform function).
  • prepreg material uncured resin
  • cured material fully cured of soaking resin
  • it was called a uniform function one composite sheet material having one surface in an uncured state and the other surface in a completely cured state
  • pre-prepared materials can be easily deformed, it is difficult to automate operations such as press punching and release. Therefore, when prepreg material is used for voice and coil bobbins, cylindrical processing of the prepreg material is easy and powerful, requiring a separator, etc. ⁇
  • cured materials are easy to press and release, but are difficult to deform, and may return after processing.
  • the cured material is used for a bobbin for a coil 'coil'-it is difficult to process the cured material into a cylindrical shape, and the butt end face of the bobbin does not join smoothly even after winding the coil. The performance of the voice coil is degraded.
  • the present invention is directed to a glass fiber sheet material: a composite sheet material having a tilting function, in which the synthetic resin is soaked and one side of the sheet material is left uncured and only the other surface is completely cured.
  • a bobbin for voice and coil with the outer surface of the cylindrical body being uncured and the inner surface being fully hardened c.
  • FIG. 1 is an enlarged cross-sectional view of a voice coil bohine ′ of the present invention.
  • FIG. 2 is a schematic explanatory diagram of a manufacturing process of the voice coil coil of the present invention.
  • FIG. 3 is a schematic explanatory view of a method for manufacturing a composite sheet material having a tilting function, which is used for a bobbin for voice and coil according to the present invention.
  • Figure 4 is a longitudinal sectional view of the sheet material in each step of the method of Figure 1, c showing it it the state of the sheet material
  • the bobbin 10 for o-coil of the present invention is It is made of a composite sheet material with a tilting function.
  • the bobbin 10 is formed by molding a composite sheet material into a cylindrical body, making the outer surface 11 an uncured surface with an uncured layer (prepredder layer) 21d, and the inner surface 12 thereof a fully cured layer (prepared layer). (Cure layer) It is configured as a fully cured surface with 21 c.
  • a voice 'coil' 40 is wound around the outer surface 11 of the voice coil bobbin 10 in a later step.
  • a composite sheet material in which a synthetic resin is soaked in a glass fiber sheet material, one of which is uncured and whose other surface is completely cured is prepared as a material.
  • the composite sheet material having such a tilting function has been developed by the present applicant, and will be described later in detail.
  • the punched sheet piece 31 usually curves as shown in FIG. At this time, it is preferable to set in advance so that the curved outer surface is an uncured surface. -Then, as shown in Fig. (D), the curved sheet piece Si is put into a mold and processed into a cylindrical shape. Bohin 10 molded in this manner is
  • the glass fin is unwound from the sheet material, and is passed through the tank 2 filled with the synthetic resin 20, and the resin is applied to the sheet material 3a. Soak in the house.
  • the sheet material 3b soaked with the resin is dried in the drying furnace 4 to fix the resin.
  • the dried and fired sheet material 3b is passed through a heating / cooling device 5 to heat one side and cool the other side.
  • the composite sheet material 3c having a tilt function formed in this way is wound as a roll 6c.
  • Glass fin,-'Sheet material 3a (Fig. 2 (A)) ti. Glass fiber woven in a straight shape, use a commercially available material-
  • the synthetic resin is heat-resistant and thermosetting, and uses, for example, a polyimide resin, a phenol-butyral mixed resin, or the like.
  • the resin in tank 2 is liquid and at room temperature.
  • the resin immersion sheet material 3b is obtained by uniformly immersing the resin 20 in the glass phenol sheet material 3a and depositing the uniform resin film 21 on the upper and lower surfaces. Thereby, it is molded.
  • the drying furnace 4 gently blows warm air onto the sheet material 3a to volatilize the resin solvent.
  • the temperature inside the drying furnace 4 is 120 to 130, and the pan furnace time is preferably about 30 minutes.
  • the heating / cooling device 5 is made up of a heating ⁇ -rule 51 and a cooling unit 52, and is opposed to one surface of the sheet material 3b.
  • the heating hole 51 has a function of generating heat on the roll surface, contacts the surface of the sheet material 3b, and cures resin adhering to and adhering to the sheet material 3b.
  • the cured layer formed in this manner is hereinafter referred to as a cured layer 21c (FIG. 2 (C)).
  • the surface temperature of the heating roll 51 is 230 to 300, and the contact time is preferably several seconds to 10 seconds.
  • the cooling unit 52 has a function of blowing cold air.C-I-Sbd Blows cold air to the surface that is not heated, soaks the resin 3b into the uncured material.
  • the uncured layer formed in this way is hereinafter referred to as a pre-pre-layer 2ld.
  • the temperature of the cool air is about 515, and the flow rate is preferably 5 to 8 nf / min.
  • the time required for the sheet material 3b to pass through the heating / cooling device 5 is preferably several seconds to 10 seconds.
  • the cooling unit 52 the heating roll 51 and the O-position may be either upper or lower, but when winding the G-roll e. Take into consideration and make a suitable gouge.
  • the composite sheet material 3c is provided with a tilting function in which a cured layer 21c is formed on one surface of the composite sheet material 3c (FIG. 2 (1)) and a pre-predator layer 21d is formed on the other surface. be able to.
  • the voice coil bobbin according to the present invention can be used for a speaker requiring high output and high performance.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

This invention relates to a bobbin for a voice coil produced by forming a cylindrical member by use of a composite sheet material which is prepared by letting a glass fiber sheet material be impregnated with a synthetic resin and has an inclination function obtained by curing completely only one of the surfaces of the sheet material with the other surface left uncured, so that the outer surface of the cylindrical member is the uncured surface with the inner surface being the completely cured surface.

Description

明 細 書  Specification
ボイ ス ' コ イ ル用ボビ ン  VOICE '' Bobbin for coil
；:技術分野〕  ;:Technical field〕
本発明は、 グラスファ ィ バ · シー ト材に合成樹脂を舍浸させ た複合シー ト材からなるコ イ ル用ボビンに関する ものである <= TECHNICAL FIELD The present invention relates to a coil bobbin made of a composite sheet material in which a synthetic resin is immersed in a glass fiber sheet material.
〔背景技術〕 (Background technology)
従来のス ピーカ のボイ ス ' コ イ ル用ボビ ンは、 紙、 アル ミ 二 ゥ ム？ 、 も し く は、 グラ ス フ ァ イ バ · シー ト材に合成樹脂を舍 浸させた複合 'ン - ト材等からつ く られている。 近年、 ス ピ一 の高出力、 高性能 C 要求に応えるために、 ボイ ス ' コ イ ル用；]" ビンに複合シ— ト材が使用されるよう になつてきた。  Is the conventional speaker voice coil bobbin made of paper or aluminum? Or, it is made of a composite sheet material in which a synthetic resin is immersed in a glass fiber sheet material. In recent years, in order to meet the demands for high-power, high-performance C, the use of composite sheet materials in voice 'coils;] "bins has been increasing.
グラスフ ァ イ ノぺ' · シー ト材に合成樹脂を舍浸させた複合シー ト材は、 各種工業製品の素材と しても広 く 使用されている。 こ の種の複合シー ト材には、 舍浸樹脂の未硬化のもの （プリ プレ グ材） と完全硬化のもの （キュ ア材） とがある （一様機能とい われていた。 ） 。 しかし、 1 枚の複合シー ト材であって、 片面 が未硬化状態で他面が完全硬化状態のも 〔傾斜機能〗 は、 来つ く られていなかった。  Composite sheets made of glass fin's · sheets soaked with synthetic resin are widely used as materials for various industrial products. This type of composite sheet material includes uncured resin (prepreg material) and fully cured (cured material) of soaking resin (it was called a uniform function). However, one composite sheet material having one surface in an uncured state and the other surface in a completely cured state [Gradient function I was not produced.
プリ プレダ材は変形加工は容易であるが、 プレス打抜、 離型 等の作業の自動化が困難である。 したがって、 プリ プレグ材を ボイ ス . コ ィ ル用ボビンに使用 した場合、 プリ プ レグ材の円筒 加工は容易である力く、 セパ レ一タ等を必要と し、 コ ス トア ツ ' に ' . Ό  Although pre-prepared materials can be easily deformed, it is difficult to automate operations such as press punching and release. Therefore, when prepreg material is used for voice and coil bobbins, cylindrical processing of the prepreg material is easy and powerful, requiring a separator, etc. Ό
他方、 キュア材はプ レ ス打拔、 離型等の作業は容易てあるが 変形加工が困齄てあ 、 加工後に戻り を生ずる こ と もある。 たかって、 キュ ア材をボイ ス ' コ ィ ル用ボビン に使用した場合- キュア材を円筒状に加工しに く く、 コ イ ルを巻き付けた後にも ボビンの突合せ端面が円滑に接合せず、 ボイ ス · コ イ ルと して の性能が低下する。 On the other hand, cured materials are easy to press and release, but are difficult to deform, and may return after processing. When the cured material is used for a bobbin for a coil 'coil'-it is difficult to process the cured material into a cylindrical shape, and the butt end face of the bobbin does not join smoothly even after winding the coil. The performance of the voice coil is degraded.
そこで、 両材料の長所を兼ね備えた傾斜機能を有する複合シ 一 ト材からなるボイ ス · コ イ ル用ボビンをつ く れば、 後の工程 も容易になり、 安価で性能のよいボイ ス . コ ィ ルをつく る こ と ができる c  Therefore, if a bobbin for a coil / coil made of a composite sheet material having a tilting function that combines the advantages of both materials is made, the later process becomes easy, and a low-cost and high-performance voice coil is realized. Can make a call c
ί発明の開示〕  [Disclosure of the invention]
本発明は、 グラスファ イ バ ' シー ト材:こ合成樹脂を舍浸させ このシ— ト材の片面を未硬化のままにして他面のみを完全硬化 させた傾斜機能を有する複合シー ト材を用いて、 円筒体を成形 し、 円筒体の外面を未硬化面にし、 かつ内面を完全硬化面とし たボイ ス · コ イル用ボビンを構成する c The present invention is directed to a glass fiber sheet material: a composite sheet material having a tilting function, in which the synthetic resin is soaked and one side of the sheet material is left uncured and only the other surface is completely cured. To form a bobbin for voice and coil with the outer surface of the cylindrical body being uncured and the inner surface being fully hardened c.
〔図面の簡単な説明 :：  [Brief description of drawings ::
第 1 図は本発明のボイ ス · コ ィ ル用ボヒ ン'の拡大横断面図で ある e .  FIG. 1 is an enlarged cross-sectional view of a voice coil bohine ′ of the present invention.
第 2図は本発明のボイ ス . コ ィ ル用ボヒ ンの製造工程の概略 説明図である。  FIG. 2 is a schematic explanatory diagram of a manufacturing process of the voice coil coil of the present invention.
第 3図は本発明のボイ ス · コ ィ ル用ボビンに用いる傾斜機能 を有する複合シー ト材の製造方法の概 ¾説明図である。 ： 第 4図は第 1図の方法の各工程における シー ト材の縦断面図 であって、 シー ト材の状態をそれそれ示す c FIG. 3 is a schematic explanatory view of a method for manufacturing a composite sheet material having a tilting function, which is used for a bobbin for voice and coil according to the present invention. : Figure 4 is a longitudinal sectional view of the sheet material in each step of the method of Figure 1, c showing it it the state of the sheet material
：発明を実施するための最良 形態：  : Best mode for carrying out the invention:
第 ] ！::に示すよ う に ·、 本発明のォィ · コ つ ル用ボビン 10は 傾斜機能を有する複合シ一 ト材からつ く られている。 ボビ ン 1 0 は、 複合シ— ト材を円筒体に成形し、 その外面 1 1を未硬化層 (プリ プレダ層） 21 d のある未硬化面にし、 また、 その内面 12 を完全硬化層 （キュア層） 21 c のある完全硬化面と して構成さ れている。 No.]! As shown in ::, the bobbin 10 for o-coil of the present invention is It is made of a composite sheet material with a tilting function. The bobbin 10 is formed by molding a composite sheet material into a cylindrical body, making the outer surface 11 an uncured surface with an uncured layer (prepredder layer) 21d, and the inner surface 12 thereof a fully cured layer (prepared layer). (Cure layer) It is configured as a fully cured surface with 21 c.
円筒体の突合せ端面は完全には一致せず、 実際にはわずかな 間隙 13が生じている。  The butted end faces of the cylindrical body do not completely match, and a slight gap 13 actually occurs.
ボイ ス . コ ィ ル用ボビ ン 1 0の外面 1 1には、 後の工程でボィ ス ' コ イ ル' 40が巻き付けられる。  A voice 'coil' 40 is wound around the outer surface 11 of the voice coil bobbin 10 in a later step.
次に、 第 2図を参照して本発明のボイ ス ' コ イ ル用ボ ン 1 0 の製造方法について説明する。  Next, with reference to FIG. 2, a description will be given of a method for manufacturing the voice coil 10 of the present invention.
まず、 グラスフ ア イ バ · シ― ト材に合成樹脂を舍浸させた複 合シー ト材であって'、 片面が未硬化で他面が完全硬化した もの を素材と して準備する。 このよう な傾斜機能を有する複合シ— ト材は本出願人が開発したものであって、 後に詳述する。  First, a composite sheet material in which a synthetic resin is soaked in a glass fiber sheet material, one of which is uncured and whose other surface is completely cured is prepared as a material. The composite sheet material having such a tilting function has been developed by the present applicant, and will be described later in detail.
( A〉 図に示すよう に、 ボビ ンの素材となる複合シ 一 卜材の口 - ル 6 を巻き解き .， （B ) 図に示すよ う に所定寸法 O ン - ί 片 3 1 にプレス打抜をする。  (A) As shown in the figure, unwind the hole 6 of the composite sheet material to be the bobbin material. (B) Press it into the predetermined size O-in-piece 31 as shown in the figure. Make a punch.
打ち抜かれたシー ト片 3 1は、 通常、 口ール卷き ぐせのために ( C ) 図に示すよ う に湾曲する。 このとき、 湾曲外面が未硬化面 となるよう に予め設定してお く とが好ま しい。 . - 次いで、 （D ) 図に示すように 湾曲シー ト片 Siを型に入れて 円筒形に加工する。 このよ う に て成形されたボヒ ン 1 0は、 第 The punched sheet piece 31 usually curves as shown in FIG. At this time, it is preferable to set in advance so that the curved outer surface is an uncured surface. -Then, as shown in Fig. (D), the curved sheet piece Si is put into a mold and processed into a cylindrical shape. Bohin 10 molded in this manner is
1 図に示すよう な横断面となる：. 1 Cross section as shown in Figure:
後のェ程にお t. てボヒ ： '】 0 Γ'舛周にボ Λ 二！ . · ル 4 ϋが ¾き 付けられる （（E) 図） 。 その後、 ボイ ス ' コ イ ル ' ボビ ンは加 熱されて完全に硬化される。 In a later stage t. Bohi: '] 0 Γ' · Le 4 ((E) figure). Then the voice 'coil' bobbin is heated and completely cured.
従来のボイ ス ' コ イ ル用ボビンにおいては、 ボイ ス · コィル ワイヤを定着させるために、 その製造過程において接着剤を塗 布する前工程が必要であった。 しかし、 本発明のボイ ス · コィ ル用ボビンでは、 ボイ ス ' コィルと接触する面が未硬化である ので、 接着剤は不要となる。  In the conventional voice coil bobbin, in order to fix the voice coil wire, a pre-process of applying an adhesive in the manufacturing process was required. However, in the voice / coil bobbin of the present invention, since the surface in contact with the voice 'coil is uncured, no adhesive is required.
さらに、 従来の一様機能を有する複合シー ト材の場合にば、 完全硬化のもの （キュア材） を多 く使用している c キュア材表 面はガラス織維固有の凹凸があるので、 ボイ ス · コ イ ル用の $B 線の整列卷付け等が困難であった。 一方、 本発明のボビンでは. 表面が未硬化であるため、 コイル用細線とのなじみがよ く、 耙 線の卷付けを正確かつ円滑に行う ことができる。 Furthermore, in the case of the composite sheet material having a conventional uniform function, since complete curing of those c cure material table surface that Many use (cured material) has unevenness of the glass woven維固Yes, Boi It was difficult to line up the $ B line for the coil. On the other hand, in the bobbin of the present invention, since the surface is uncured, the bobbin is well adapted to the thin wire for coil, and the raker wire can be accurately and smoothly wound.
次に、 第 3図および第 4図を参照して-、 本発明のボイ ス - コ ィル用ボビンに用いられる複合シー ト材の製造方法について說 明する。  Next, with reference to FIG. 3 and FIG. 4, a method of manufacturing a composite sheet material used for the voice-coil bobbin of the present invention will be described.
第 3図に示すように、 グラスフ ァ イ ノ、、 · · シー ト材の —ル i を卷き解いて、 合成樹脂 20を満たしてあるタ ンク 2内に通して シー ト材 3aに樹脂を舍浸させる。 樹脂を舍浸したシ— ト材 3bは 乾燥炉 4において乾燥されて、 樹脂を定着する。 次いで、 乾燒 後のシ一 ト材 3bは加熱 · 冷却装置 5に通されて片面を加熱し他 面を冷却する。 このようにして成形された傾斜機能を有する複 合シ— ト材 3cはロール 6 として卷き取られる c As shown in Fig. 3, the glass fin is unwound from the sheet material, and is passed through the tank 2 filled with the synthetic resin 20, and the resin is applied to the sheet material 3a. Soak in the house. The sheet material 3b soaked with the resin is dried in the drying furnace 4 to fix the resin. Next, the dried and fired sheet material 3b is passed through a heating / cooling device 5 to heat one side and cool the other side. The composite sheet material 3c having a tilt function formed in this way is wound as a roll 6c.
グラ スフ ァ イ ノ、- ' シ一 ト材 3a (第 2図（A) ) ti . ガラ ス镞維を ンー ト状に織り上げたものであって、 市販のものを使用する- 合成樹脂は耐熱 · 熱硬化性のものであ って、 例えば、 ポ リ イ ミ ド樹脂、 フ ユノ ー ル一プチラー ル混合樹脂等を使用する。 タ ン ク 2内の樹脂は液状で常温である。 舍浸シ一 ト材 3bは、 第 2 図（B) に示すように、 樹脂 20をグラスフア イ ノ . シー ト材 3a内 に均等に舍浸させ、 上下両面に均等な樹脂膜 21を付着させるこ とによって、 成形される。 Glass fin,-'Sheet material 3a (Fig. 2 (A)) ti. Glass fiber woven in a straight shape, use a commercially available material- The synthetic resin is heat-resistant and thermosetting, and uses, for example, a polyimide resin, a phenol-butyral mixed resin, or the like. The resin in tank 2 is liquid and at room temperature. As shown in FIG. 2 (B), the resin immersion sheet material 3b is obtained by uniformly immersing the resin 20 in the glass phenol sheet material 3a and depositing the uniform resin film 21 on the upper and lower surfaces. Thereby, it is molded.
乾燥炉 4 はシー ト材 3aに温風を穏やかに吹き付けて、 樹脂の 溶媒を揮散させる。 乾燥炉 4 内の温度は 120 〜130 て、 潘炉時 間は約 30分程度が好ま しい。  The drying furnace 4 gently blows warm air onto the sheet material 3a to volatilize the resin solvent. The temperature inside the drying furnace 4 is 120 to 130, and the pan furnace time is preferably about 30 minutes.
加熱 · 冷却装置 5 は、 加熱 α—ル 51と冷却ュニ ッ ト 52と力、ら できていて、 それぞれシー ト材 3bの一方の面に対向する。 加熱 口—ル 51はロー ル表面を発熱する機能を有し、 シー ト材 3bの表 面に接触して、 シー ト材 3bに舍浸 · 付着している樹脂を硬化さ せる。 このよう に して成形された硬化層を以下キュア層 21c (第 2図（C))という。 加熱ロ ール 51の表面温度は 230 〜300 て で、 その接触時間は数秒から 10秒程度が好ま しい。  The heating / cooling device 5 is made up of a heating α-rule 51 and a cooling unit 52, and is opposed to one surface of the sheet material 3b. The heating hole 51 has a function of generating heat on the roll surface, contacts the surface of the sheet material 3b, and cures resin adhering to and adhering to the sheet material 3b. The cured layer formed in this manner is hereinafter referred to as a cured layer 21c (FIG. 2 (C)). The surface temperature of the heating roll 51 is 230 to 300, and the contact time is preferably several seconds to 10 seconds.
冷却ュニ ッ ト 52は冷風を吹き出す機能を有し シ一 I- Sbd 加熱をしていない表面に冷風を吹き付けて、 ン ト材 3bに舍浸 - 付着している樹脂を未硬化の状態に維持する こ のよ う に し て成形された未硬化層を以下プリ プレダ層 2ld という。 冷風の 温度は一 5 15てで、 その流量は 5 〜 8 nf/minが好ま .しい。  The cooling unit 52 has a function of blowing cold air.C-I-Sbd Blows cold air to the surface that is not heated, soaks the resin 3b into the uncured material. The uncured layer formed in this way is hereinafter referred to as a pre-pre-layer 2ld. The temperature of the cool air is about 515, and the flow rate is preferably 5 to 8 nf / min.
シ - ト材 3bが加熱 · 冷却装置 5 を通過する時間は数秒から 10 秒程度が好ま しい。  The time required for the sheet material 3b to pass through the heating / cooling device 5 is preferably several seconds to 10 seconds.
冷却ュ二 .:. ト 52と加熱ロ ー ル 51と O位置関係 、 いずれを上 下に してもよいが、 G—ル eに卷き取るさいに.. 巻き く せをも 考慮に入れて、 適当に抉定する。 The cooling unit 52: the heating roll 51 and the O-position may be either upper or lower, but when winding the G-roll e. Take into consideration and make a suitable gouge.
本発明の方法によれば、 複合シ— ト材 3c (第 2図 ΰ))の片面 にキュア層 21c をまた他面にプリ プレダ層 21d を成形した傾斜 機能を複合シ— ト材 3cにもたせることができる。  According to the method of the present invention, the composite sheet material 3c is provided with a tilting function in which a cured layer 21c is formed on one surface of the composite sheet material 3c (FIG. 2 (1)) and a pre-predator layer 21d is formed on the other surface. be able to.
〔産業上の利用可能性〕  [Industrial applicability]
本発明によるボイ ス ' コ イ ル用ボビンは、 高出力 ·高性能を 要求するスピーカに利用することができる。  The voice coil bobbin according to the present invention can be used for a speaker requiring high output and high performance.

Claims

請 求 の 範 囲 The scope of the claims
グラスフ ァ イ ノ < · シー ト材に合成樹脂を舍浸させ、 こ の シー ト材の片面を未硬化のままにして他面のみを完全硬化させた傾 斜機能を有する複合シー ト材を用いて、 円筒体を成形し、 円筒 体の外面を未硬化面に し、 かつ内面を完全硬化面と したボイ ス • コ イ ル用ボビン。  A composite sheet with a tilting function is used in which a synthetic resin is immersed in a glass fin <sheet, and one side of the sheet is left uncured and only the other side is completely cured. A bobbin for a coil coil, in which a cylindrical body is formed and the outer surface of the cylindrical body is made uncured and the inner surface is made completely hardened.
PCT/JP1987/000780 1987-10-15 1987-10-15 Bobbin for voice coil WO1989003633A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1987/000780 WO1989003633A1 (en) 1987-10-15 1987-10-15 Bobbin for voice coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1987/000780 WO1989003633A1 (en) 1987-10-15 1987-10-15 Bobbin for voice coil

Publications (1)

Publication Number Publication Date
WO1989003633A1 true WO1989003633A1 (en) 1989-04-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1987/000780 WO1989003633A1 (en) 1987-10-15 1987-10-15 Bobbin for voice coil

Country Status (1)

Country Link
WO (1) WO1989003633A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101864642A (en) * 2010-04-29 2010-10-20 惠州市海韵电子有限公司 Green glass fiber and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452520A (en) * 1977-10-04 1979-04-25 Foster Electric Co Ltd Preparation of voice coil
JPS54131834U (en) * 1978-02-28 1979-09-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452520A (en) * 1977-10-04 1979-04-25 Foster Electric Co Ltd Preparation of voice coil
JPS54131834U (en) * 1978-02-28 1979-09-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101864642A (en) * 2010-04-29 2010-10-20 惠州市海韵电子有限公司 Green glass fiber and preparation method thereof
CN101864642B (en) * 2010-04-29 2011-08-10 惠州市海韵电子有限公司 Green glass fiber and preparation method thereof

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