JPH06233382A - Manufacture of speaker - Google Patents
Manufacture of speakerInfo
- Publication number
- JPH06233382A JPH06233382A JP3615793A JP3615793A JPH06233382A JP H06233382 A JPH06233382 A JP H06233382A JP 3615793 A JP3615793 A JP 3615793A JP 3615793 A JP3615793 A JP 3615793A JP H06233382 A JPH06233382 A JP H06233382A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- lead wire
- voice coil
- coil bobbin
- component
- 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
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、各種音響機器に使用
されるスピーカに係わり、詳しくは、ダンパーとボイス
コイルとの接続処理を簡易かつ容易にしたスピーカの製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used in various audio equipments, and more particularly, to a method of manufacturing a speaker in which connection processing between a damper and a voice coil is simple and easy.
【０００２】[0002]
【従来の技術】スピーカは、基本的には、ボイスコイル
の引出し線を振動板上に延出し、振動板上の適宜の部位
において一端がターミナルを介して外部入力線に接続さ
れた錦糸線と接続するよう構成されているが、この方式
のスピーカは、振動板上においてボイスコイルの引出し
線と錦糸線とを接続することを不可欠とするため、スピ
ーカの組み立て作業がきわめて煩瑣となって、自動化が
難しく、スピーカ性能の向上の妨げとなっている。そこ
で、ボイスコイルの引出し線と外部入力線の接続に際
し、たとえば、特開平３−２０８４９７号公報に開示さ
れるスピーカの配線構造のように、外周縁部から内周縁
部までコルゲーションに沿って導電部を形成したダンパ
ーを使用し、ボイスコイルの引出し線の先端に銅箔を半
田付けすると共に、該銅箔をコイルボビンの側面のダン
パー取付け位置に接着剤によって固定し、しかるのちダ
ンパーの導電部と銅箔との接合部を半田付けして信号回
路を構成し、もって配線作業の簡略化と迅速化および自
動化をはかっている。2. Description of the Related Art In a speaker, basically, a lead wire of a voice coil is extended on a diaphragm and one end of the speaker is connected to an external input wire through a terminal at an appropriate portion of the diaphragm. Although this type of speaker is configured to be connected, it is indispensable to connect the lead wire of the voice coil and the tinsel wire on the diaphragm. It is difficult to improve the speaker performance. Therefore, when connecting the lead wire of the voice coil and the external input wire, for example, like the wiring structure of the speaker disclosed in Japanese Patent Laid-Open No. 3-208497, a conductive portion is formed along the corrugation from the outer peripheral edge to the inner peripheral edge. Using a damper that has been formed, solder a copper foil to the tip of the lead wire of the voice coil and fix the copper foil to the damper mounting position on the side of the coil bobbin with an adhesive. The signal circuit is constructed by soldering the joint part with the foil, and the wiring work is simplified, speeded up, and automated.
【０００３】[0003]
【発明が解決しようとする課題】前記公報に開示される
ダンパーとボイスコイルとの接続方式は、ボイスコイル
の引出し線と銅箔を半田付けして一体化させてリード部
を形成したのち、該リード部を導電部の位置に合うよう
コイルボビンの側面に接着剤を使用して固定し、しかる
のちダンパーの導電部の端部とリード部との接合部を改
めて半田付けして接続するものである。したがって、導
電部の端部や銅箔からなるリード部が固定的に保持さ
れ、従来のように線材の端末がフリーの状態となってい
る錦糸線を使用しないので、自動半田付け作業が可能で
あるという利点を有する反面、ボイスコイルの引出し線
と銅箔の形成によるリード部の形成および導電部の端部
とリード部との接合部に際する半田付けが必須であるた
め、半田の盛り上がりによって振動板が定常位置に収ま
らなかったり、半田付けに際する熱によってコイルボビ
ンが損傷するなど実用上解決すべき多くの問題点を有し
ている。DISCLOSURE OF INVENTION Problems to be Solved by the Invention In the connection method of the damper and the voice coil disclosed in the above publication, the lead wire is formed by soldering the lead wire of the voice coil and the copper foil together to form a lead portion. The lead part is fixed to the side surface of the coil bobbin using an adhesive so as to match the position of the conductive part, and then the end of the conductive part of the damper and the joint part of the lead part are re-soldered and connected. . Therefore, since the end portion of the conductive portion and the lead portion made of copper foil are fixedly held and the terminal of the wire material is in a free state unlike the conventional tinsel wire, automatic soldering work is possible. On the other hand, it has the advantage that there is an advantage, but it is necessary to form the lead part by forming the lead wire of the voice coil and the copper foil and soldering at the joint part between the end part of the conductive part and the lead part. There are many problems to be solved practically, such as the diaphragm not being able to fit in the steady position and the coil bobbin being damaged by heat during soldering.
【０００４】この発明はかゝる現状に鑑み、ボイスコイ
ルの引出し線とダンパーの導電部とを接着剤を使用する
ことによってコイルホビンに固定し、振動板のコイルボ
ビンへの定常位置の固定を確保すると共に、コイルボビ
ンを損傷することのないスピーカの製造方法を提供せん
とするものである。In view of the present situation, the present invention secures the fixed position of the diaphragm to the coil bobbin by fixing the lead wire of the voice coil and the conductive portion of the damper to the coil hobbin by using an adhesive. At the same time, another object of the present invention is to provide a method for manufacturing a speaker that does not damage the coil bobbin.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するた
め、この発明のスピーカの製造方法は、導電部を有する
ダンパーを使用してボイスコイルの引出し線と外部入力
線とをコイルボビンの外周部において一体的に結合する
に際し、ボイスコイルの引出し線と導電部とを結合せん
とするコイルボビンの外周部に二液型導電接着剤の主剤
のみを塗布し、該塗布部にボイスコイルの引出し線を仮
固定した状態で、ダンパー内周縁部の導電部を前記引出
し線と接合し、しかるのちこの接合部に混合済みの二液
型接着剤を塗布して硬化させ、ボイスコイルの引出し線
とダンパーの導電部とをコイルボビンの外周部において
導通固定することを特徴とするものである。In order to achieve the above object, a method of manufacturing a speaker according to the present invention uses a damper having a conductive portion to connect a lead wire of a voice coil and an external input wire to an outer peripheral portion of a coil bobbin. When integrally connecting, only the main component of the two-component conductive adhesive is applied to the outer periphery of the coil bobbin that connects the lead wire of the voice coil and the conductive portion, and the lead wire of the voice coil is temporarily applied to the applied portion. In the fixed state, the conductive part of the inner peripheral edge of the damper is joined to the lead wire, and then the mixed two-component adhesive is applied to the joint part to cure it, and the conductive wire of the voice coil lead wire and the damper And the portion are electrically connected and fixed at the outer peripheral portion of the coil bobbin.
【０００６】この発明において、使用するダンパーは、
特開平３−２０８４９７号公報に開示されるように、外
周縁部から内周縁部にコルゲーション形状に沿って外部
入力線とボイスコイルの引出し線を接続するための導電
部を設けたもので、織布または不織布などからなるダン
パー素材に平らに織った銅箔からなる導電材をミシンで
縫い付けた、これにフェノール樹脂等の熱硬化性樹脂を
含浸させたのち、ダンパー素材を加熱成形することによ
ってコルゲーションを同心円状に形成したもので、ダン
パー素材は、あらかじめ熱硬化性樹脂を含浸させて半乾
燥状態としたものを使用し、導電材の装着後に全体を加
熱形成してもよい。また、導電部を形成する導電材につ
いては、平らに織った銅箔を使用することが好ましい
が、必ずしもこれに限定されない。In the present invention, the damper used is
As disclosed in JP-A-3-208497, a conductive portion for connecting an external input wire and a lead wire of a voice coil is provided along the corrugation shape from the outer peripheral edge portion to the inner peripheral edge portion. A conductive material made of copper foil woven flat on a damper material made of cloth or non-woven fabric is sewn with a sewing machine, impregnated with a thermosetting resin such as phenol resin, and then the damper material is heat-molded. The corrugations are formed in concentric circles, and the damper material may be preliminarily impregnated with a thermosetting resin to be in a semi-dried state, and the whole may be heated and formed after mounting the conductive material. Further, as the conductive material forming the conductive portion, it is preferable to use a flat-woven copper foil, but not limited to this.
【０００７】コイルボビンに塗布する二液型導電接着剤
は、使用に際しては主剤またはＡ液のみを使用するもの
で、硬化剤またはＢ液は使用しない。かゝる二液型導電
接着剤は、たとえば、エポキシ樹脂やアクリル樹脂ある
いはポリイミド樹脂などのベースレンジに、カーボンや
銀、ニッケルなど導電性を有する充填材を配合したもの
であって、本剤と硬化剤（二液主剤型）あるいはＡ液と
Ｂ液（Ａ，Ｂタイプ）からなるいずれのタイプであって
もよく、導電性を有する接着剤ならばその種類やタイプ
には特別の限定はない。The two-component conductive adhesive applied to the coil bobbin uses only the main component or the liquid A when used, and does not use the curing agent or the liquid B. Such a two-component conductive adhesive is, for example, a base range such as an epoxy resin, an acrylic resin or a polyimide resin mixed with a conductive filler such as carbon, silver or nickel. It may be a curing agent (two-component main agent type) or any type consisting of A liquid and B liquid (A, B type), and there is no particular limitation on the type and type of the adhesive as long as it has conductivity. .
【０００８】ボイスコイルの引出し線とダンパーの導電
部の端部とを接合させたのちに使用する二液型接着剤
は、主剤と硬化剤（二液主剤型）またはＡ液とＢ液
（Ａ，Ｂタイプ）とを混合したものを使用するもので、
該混合液中に含まれる硬化剤またはＢ液の作用によって
二液型導電接着の硬化もしくは重合を促進させると共
に、コイルボビンにダンパーを接着固定するものであっ
て、市販のアクリル系接着剤やエポキシ系接着剤を使用
することができる。なお、この二液型接着剤は、前記二
液型導電接着剤のベースレンジがアクリル樹脂の場合に
はアクリル系接着剤が、エポキシ樹脂の場合にはエポキ
シ系接着剤を使用することが好ましい。The two-component adhesive used after joining the lead wire of the voice coil and the end of the conductive portion of the damper is a main component and a curing agent (two-component main component type) or A liquid and B liquid (A , B type) is used as a mixture.
A curing agent or a solution B contained in the mixed solution accelerates curing or polymerization of the two-component conductive adhesive, and a damper is adhesively fixed to the coil bobbin, which is a commercially available acrylic adhesive or epoxy adhesive. Adhesives can be used. The two-component adhesive is preferably an acrylic adhesive when the base range of the two-component conductive adhesive is an acrylic resin and an epoxy adhesive when the base range is an epoxy resin.
【０００９】コイルボビンは、ボイスコイルを磁気ギャ
ップ内に保持するためのもので、通常ダンパーと振動板
の外周縁部に取付けられるエッジを介してフレームに固
定され、ダンパーの内周縁と振動板の内周縁とはほぼ同
一の高さにおいてコイルボビンに取付けられ、その接着
部を三点接着部と称される。したがって、この発明にお
いても、二液型接着剤によってコイルボビンにダンパー
を接着固定するに際し、振動板も同時に二液型接着剤に
よってコイルボビンの外周部に接着固定するものであ
る。The coil bobbin is used to hold the voice coil in the magnetic gap, and is usually fixed to the frame through an edge attached to the outer peripheral edge of the damper and the diaphragm, and the inner peripheral edge of the damper and the inner edge of the diaphragm. The coil bobbin is attached to the coil bobbin at substantially the same height as the peripheral edge, and the bonded portion is called a three-point bonded portion. Therefore, also in the present invention, when the damper is bonded and fixed to the coil bobbin by the two-component adhesive, the diaphragm is also bonded and fixed to the outer peripheral portion of the coil bobbin by the two-component adhesive at the same time.
【００１０】[0010]
【作用】この発明のスピーカの製造方法は、コイルボビ
ンの外周部に二液型導電接着剤の主剤のみを塗布し、コ
イルボビンにボイスコイルの引出し線を仮固定した状態
でダンパーの内周縁部に位置する導電部を当接し、この
状態を保持しながら硬化剤もしくは重合促進剤を含む混
合した二液型接着剤を当該接合部に塗布するものである
ため、混合済みの二液型接着剤に含まれる硬化剤が二液
型導電接着剤の硬化を促進し、硬化させることができ、
半田を使用せずにコイルボビンの外周部においてボイス
コイルとダンパーの導電部とを導通させることができ
る。According to the method of manufacturing a speaker of the present invention, only the main component of the two-component conductive adhesive is applied to the outer peripheral portion of the coil bobbin and the lead wire of the voice coil is temporarily fixed to the inner peripheral portion of the damper. The mixed two-component adhesive containing the curing agent or the polymerization accelerator is applied to the joint while keeping the state in contact with the conductive portion to be included in the mixed two-component adhesive. The curing agent that promotes the curing of the two-component conductive adhesive can be cured,
The voice coil and the conductive portion of the damper can be electrically connected to each other on the outer peripheral portion of the coil bobbin without using solder.
【００１１】以下、この発明のスピーカの製造方法を添
付の図面に基づいて説明する。図１において、１はセン
ターポール、２はボトムプレート、３環状磁石、４はト
ッププレート、５は磁気ギャップ内に保持されるコイル
ボビン、６はボイスコイル、７は引出し線、８はフレー
ム、９はダンパー、１０は導電部、１１は振動板、１２
はエッジ、１３はダストキャップ、１４はフレーム８に
形成された端子取付け板、１５はターミナル、１６は外
部入力線を示す。前記ダンパー９は、織布からなるダン
パー素材に平らに織った銅箔からなる導電部１０を縫着
し、全体にフェノール樹脂を含浸させて加熱成形して同
心円状にコルゲーションを設けたものである。A method of manufacturing the speaker of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, 1 is a center pole, 2 is a bottom plate, 3 annular magnets, 4 is a top plate, 5 is a coil bobbin held in a magnetic gap, 6 is a voice coil, 7 is a lead wire, 8 is a frame, and 9 is Damper, 10 is a conductive part, 11 is a diaphragm, 12
Is an edge, 13 is a dust cap, 14 is a terminal mounting plate formed on the frame 8, 15 is a terminal, and 16 is an external input line. The damper 9 is a damper material made of a woven cloth, and a conductive portion 10 made of a flat woven copper foil is sewn onto the damper material. .
【００１２】かゝる部材からなるスピーカは、以下のよ
うにして組み立てるものである。まず、ボトムプレート
２上に環状磁石３を固定し、該環状磁石３の上面にさら
にリング状のトッププレート４を設けて磁気回路を構成
し、該磁気回路上にフレーム８を適宜手段によって固定
する。しかるのち、治具を使用してセンターポール１と
トッププレート４との間に形成された磁気ギャップ内に
コイルボビン５を装着し、ついで、ボイスコイル５の引
出し線７とダンパー９との接合位置となるコイルボビン
５の外周部に二液型導電接着剤の主剤Ａを塗布し、ボイ
スコイル５の引出し線７の先端を当該位置に仮固定す
る。実施例において使用した二液型導電接着剤の主剤の
ベースレンジは、エポキシ樹脂に銀系の充填材を配合し
てなるもので、粘度は７０，０００であった。コイルボ
ビン５の外周部に塗布された二液型導電接着剤は、主剤
のみで硬化剤を使用していないため、直ちに硬化はしな
いので、塗布部にダンパー９の導電部１０の内周縁に位
置する端部を接合し、引出し線７と当接状態を保持しな
がらコイルボビン５に対するダンパー９の取付け位置を
調整したのち、混合済みの二液型接着剤Ｂを塗布してダ
ンパー９をコイルボビン５の外周部に接着固定するもの
である。この混合済みの二液型接着剤Ｂの使用によって
コイルボビン５とダンパー９とは強固に接着されるが、
該混合済みの二液型接着剤Ｂに含まれる硬化剤の一部は
塗布に際して二液型導電接着剤Ａに作用し、該二液型導
電接着剤Ａの硬化を促進する。なお、コイルボビン５へ
のダンパー９の接着固定に際しては、図２に示すように
振動板１１の内周縁部も混合済みの二液型接着剤Ｂによ
ってコイルボビン５に接着固定するものである。The speaker made of such a member is assembled as follows. First, the annular magnet 3 is fixed on the bottom plate 2, a ring-shaped top plate 4 is further provided on the upper surface of the annular magnet 3 to form a magnetic circuit, and the frame 8 is fixed on the magnetic circuit by appropriate means. . Then, using a jig, the coil bobbin 5 is mounted in the magnetic gap formed between the center pole 1 and the top plate 4, and then the lead wire 7 of the voice coil 5 and the damper 9 are joined to each other. The main component A of the two-component conductive adhesive is applied to the outer peripheral portion of the coil bobbin 5 which is formed, and the leading end of the lead wire 7 of the voice coil 5 is temporarily fixed at that position. The base range of the main component of the two-component type conductive adhesive used in the examples is an epoxy resin mixed with a silver-based filler, and the viscosity was 70,000. The two-component conductive adhesive applied to the outer peripheral portion of the coil bobbin 5 does not cure immediately because it is a main component and does not use a curing agent. Therefore, the two-component conductive adhesive is located at the inner peripheral edge of the conductive portion 10 of the damper 9 in the applied portion. After joining the ends and adjusting the mounting position of the damper 9 to the coil bobbin 5 while maintaining the contact state with the lead wire 7, the mixed two-component adhesive B is applied to attach the damper 9 to the outer circumference of the coil bobbin 5. It is to be fixed to the part by adhesion. By using the mixed two-component adhesive B, the coil bobbin 5 and the damper 9 are firmly adhered,
A part of the curing agent contained in the mixed two-pack type adhesive B acts on the two-pack type conductive adhesive A during application, and accelerates the hardening of the two-pack type conductive adhesive A. When the damper 9 is bonded and fixed to the coil bobbin 5, the inner peripheral edge of the vibration plate 11 is also bonded and fixed to the coil bobbin 5 with the mixed two-component adhesive B as shown in FIG.
【００１３】[0013]
【発明の効果】この発明のスピーカの製造方法は、コイ
ルボビンへの導電部を有するダンパーの装着に際し、コ
イルボビンのボイスコイルの引出し線と導電部との接合
位置にあらかじめ二液型導電接着剤の主剤のみを塗布
し、該塗布部においてボイスコイルの引出し線を仮固定
した状態で、ダンパー内周縁部の導電部と引出し線を接
合し、ダンパーの取付け位置を調整したのち、混合済み
の二液型接着剤を塗布してコイルボビンとダンパーとを
接着固定するので、振動板の定常位置が常に確保され、
コイルボビンの損傷も生ずることがない。特に、この発
明のスピーカの製造方法は、ダンパーの導電部とボイス
コイルの引出し線の一体化を二液型導電接着剤の主剤に
よって行うため、コイルボビンの外周部に塗布した二液
型導電接着剤の硬化前に振動板を取付けることができ、
粘度の高い主剤を使用することによってコイルボビンの
所定位置に確実に塗布することができ、両者の接合を自
動化することができるため、スピーカの組み立ての自動
化を促進することができ、得たスピーカの性能向上もは
かることができるなど実用上多大の利点を有するもので
ある。According to the speaker manufacturing method of the present invention, when the damper having the conductive portion is mounted on the coil bobbin, the main component of the two-component conductive adhesive is preliminarily provided at the joining position between the lead wire of the voice coil of the coil bobbin and the conductive portion. After applying only the lead wire of the voice coil to the applying portion and temporarily fixing the lead wire of the voice coil, the lead wire is joined to the conductive portion at the inner peripheral edge of the damper, and the mounting position of the damper is adjusted. Since the coil bobbin and the damper are bonded and fixed by applying an adhesive, the steady position of the diaphragm is always secured,
The coil bobbin will not be damaged. Particularly, in the method for manufacturing the speaker of the present invention, since the conductive portion of the damper and the lead wire of the voice coil are integrated by the main component of the two-component conductive adhesive, the two-component conductive adhesive applied to the outer peripheral portion of the coil bobbin. A diaphragm can be attached before curing
By using a highly viscous base compound, the coil bobbin can be surely applied at a predetermined position, and the joining of the two can be automated, so that the automation of speaker assembly can be promoted and the obtained speaker performance can be improved. It has a great practical advantage such that it can be improved.
【図１】この発明のスピーカの製造方法の要部を示す斜
視図である。FIG. 1 is a perspective view showing a main part of a method for manufacturing a speaker according to the present invention.
【図２】この発明のスピーカの製造方法によって得たス
ピーカの半縦断面図である。FIG. 2 is a semi-longitudinal sectional view of a speaker obtained by the method for manufacturing a speaker of the present invention.
５ コイルボビン ６ ボイスコイル ７ 引出し線 ９ ダンパー １０ 導電部 Ａ 二液型導電接着剤の主剤 5 Coil bobbin 6 Voice coil 7 Lead wire 9 Damper 10 Conductive part A Two-component conductive adhesive main agent
Claims (4)
スコイルの引出し線と外部入力線とをコイルボビンの外
周部において一体的に結合するに際し、ボイスコイルの
引出し線と導電部とを結合せんとするコイルボビンの外
周部に二液型導電接着剤の主剤のみを塗布し、該塗布部
にボイスコイルの引出し線を仮固定した状態で、ダンパ
ー内周縁部の導電部を前記引出し線と接合し、しかるの
ちこの接合部に混合済みの二液型接着剤を塗布して硬化
させ、ボイスコイルの引出し線とダンパーの導電部とを
コイルボビンの外周部において導通固定することを特徴
とするスピーカの製造方法。1. When connecting a lead wire of a voice coil and an external input wire integrally at an outer peripheral portion of a coil bobbin using a damper having a conductive portion, the lead wire of the voice coil and the conductive portion are not connected. Applying only the main component of the two-component conductive adhesive to the outer peripheral portion of the coil bobbin, and temporarily fixing the lead wire of the voice coil to the applied portion, the conductive portion of the damper inner peripheral edge is joined to the lead wire, Then, a mixed two-component adhesive is applied to the joint portion and cured, and the lead wire of the voice coil and the conductive portion of the damper are conductively fixed at the outer peripheral portion of the coil bobbin. .
をベースレンジとして銀系を充填材としたもの、もしく
はアクリル樹脂をベースレンジとしてニッケル系を充填
材としたものである請求項１記載のスピーカの製造方
法。2. The two-component conductive adhesive is one in which an epoxy resin is used as a base range and a silver-based filler is used, or an acrylic resin is used as a base range and a nickel-based filler is used. Speaker manufacturing method.
は、ベースレンジが同一であることを特徴とする請求項
１記載のスピーカの製造方法。3. The method for manufacturing a speaker according to claim 1, wherein the two-component conductive adhesive and the two-component adhesive have the same base range.
引出し線とダンパーの導電部を一体的に接着固定するに
際し、コイルボビンに振動板を同時に接着固定すること
を特徴とする請求項１記載のスピーカの製造方法。4. The speaker according to claim 1, wherein when the lead wire of the voice coil and the conductive portion of the damper are integrally bonded and fixed to the outer peripheral portion of the coil bobbin, a diaphragm is simultaneously bonded and fixed to the coil bobbin. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3615793A JPH06233382A (en) | 1993-02-01 | 1993-02-01 | Manufacture of speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3615793A JPH06233382A (en) | 1993-02-01 | 1993-02-01 | Manufacture of speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06233382A true JPH06233382A (en) | 1994-08-19 |
Family
ID=12461943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3615793A Pending JPH06233382A (en) | 1993-02-01 | 1993-02-01 | Manufacture of speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06233382A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753238A1 (en) * | 1994-03-29 | 1997-01-15 | Harman International Industries Incorporated | Method of manufacturing a loudspeaker spider |
| US5850462A (en) * | 1994-12-28 | 1998-12-15 | Kabushiki Kaisha Kenwood | Speaker component, speaker, and its manufacturing method |
-
1993
- 1993-02-01 JP JP3615793A patent/JPH06233382A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753238A1 (en) * | 1994-03-29 | 1997-01-15 | Harman International Industries Incorporated | Method of manufacturing a loudspeaker spider |
| EP0753238A4 (en) * | 1994-03-29 | 1998-01-21 | Harman Int Ind | Method of manufacturing a loudspeaker spider |
| US7082667B2 (en) | 1994-03-29 | 2006-08-01 | Harman International Industries, Incorporated | Method of making a loudspeaker |
| US5850462A (en) * | 1994-12-28 | 1998-12-15 | Kabushiki Kaisha Kenwood | Speaker component, speaker, and its manufacturing method |
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