JPS5833400A - Dynamic loudspeaker - Google Patents
Dynamic loudspeakerInfo
- Publication number
- JPS5833400A JPS5833400A JP13118781A JP13118781A JPS5833400A JP S5833400 A JPS5833400 A JP S5833400A JP 13118781 A JP13118781 A JP 13118781A JP 13118781 A JP13118781 A JP 13118781A JP S5833400 A JPS5833400 A JP S5833400A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- mass
- voice coil
- alloy
- coil conductor
- 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
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 6
- 239000011777 magnesium Substances 0.000 claims abstract description 6
- 230000005520 electrodynamics Effects 0.000 claims description 11
- 239000004020 conductor Substances 0.000 abstract description 12
- 230000005484 gravity Effects 0.000 abstract description 6
- 230000001052 transient effect Effects 0.000 abstract description 5
- 239000004952 Polyamide Substances 0.000 abstract description 4
- 229920002647 polyamide Polymers 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は動電型スピーカに関するものであり、その目的
とするところはボイスコイルの巻線質量を軽減して振動
系質量を軽量化することにより、高域再生限界周波数の
拡大を図ると共に過渡応答特性のすぐれた動電型スピー
カを提供することにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrodynamic speaker, and its purpose is to reduce the mass of the voice coil winding and reduce the mass of the vibration system, thereby increasing the high frequency reproduction limit frequency. The object of the present invention is to provide an electrodynamic speaker with excellent transient response characteristics.
一般に動作型スピーカは磁気回路を構成する磁気空隙内
に振動板に結合したボイスコイルをピストン運動可能に
配置したものであり、そのポ＼イヌコイルのコイル導体
としては銅やアルミニウムが使用されている。特に高音
用スピーカとしては振動板と共に振動系質量を軽量化す
るためにボイスコイルのコイル導体として比重の小さい
アルミニウムやその合金が使用されている。しかしなが
ら、上述した動電型スピーカでは音圧周波数特性上１０
ＫＨｚ以上の高音域で複雑な高域共振を起こすものであ
り、この高域共振により再生限界周波数が決定されて゛
しまい、こ、・の再生限界周波数を可聴周波数帯域外に
設定することは非常に難しいという問題がある。そして
、振動板質量の軽量化により高域共振を２０’ＫＩ（Ｚ
以上の可聴周波数帯域外に設定することができたとして
も、ボイスコイルを中心とした振動系質量は壕だ大きい
ものであり、そのため、過渡応答特性が悪く、高音域で
の音響パワーレベルを向上させることがむずかしいとい
う問題があった。In general, a dynamic speaker has a voice coil coupled to a diaphragm arranged in a magnetic gap constituting a magnetic circuit so as to be movable as a piston, and copper or aluminum is used as the coil conductor of the po/dog coil. In particular, for high-pitched speakers, aluminum or aluminum alloys with low specific gravity are used as the coil conductor of the voice coil in order to reduce the weight of the vibration system together with the diaphragm. However, the electrodynamic speaker described above has a sound pressure frequency characteristic of 10
It causes complex high-frequency resonance in the high frequency range above KHz, and the reproduction limit frequency is determined by this high-frequency resonance, so it is extremely difficult to set the reproduction limit frequency outside the audible frequency band. The problem is that it is difficult. By reducing the mass of the diaphragm, high-frequency resonance can be reduced to 20'KI (Z
Even if it is possible to set the frequency outside the above audible frequency range, the mass of the vibration system centered around the voice coil is quite large, so the transient response characteristics are poor and the sound power level in the high frequency range is improved. The problem was that it was difficult to do so.
本発明はこのような従来の欠点を解消するものであり、
以下、本発明について実施例の図面と共に説明する。The present invention solves these conventional drawbacks,
The present invention will be described below with reference to drawings of embodiments.
第１図は本発明の動電型スピーカの一実施例を示してお
り、図中、１は七ンターポール２を有する円板状の下プ
レート、３は上記下プレート１上に設けた環状のマグネ
ット、４は上記マグネット−ポー／１’２付きの下プレ
ート１、マグネット３および上プレート４は磁気回路を
構成しており、上記−ｔｚンターホ−）ｖ ２の外周面
と上記上プレート４の内周面との間に所定の磁気空隙６
を有している。FIG. 1 shows an embodiment of an electrodynamic speaker according to the present invention. In the figure, 1 is a disc-shaped lower plate having seven interpoles 2, and 3 is an annular lower plate provided on the lower plate 1. The magnet 4 is the lower plate 1 with the above-mentioned magnet-port/1'2, the magnet 3 and the upper plate 4 constitute a magnetic circuit, and the outer circumferential surface of the above-mentioned A predetermined magnetic gap 6 between the inner peripheral surface
have.
６は振動板であり、その外周部がエツジ７を介して上記
磁気回路を構成する上″プレート４に支持されている。Reference numeral 6 denotes a diaphragm, the outer circumference of which is supported via an edge 7 by the upper plate 4 forming the magnetic circuit.
そして、このエツジ７は上記の上プレート４に設けた台
座８と押え具９により挾持されテイル。１ｏは上記振動
板６に設けたアルミニウム合金やクラノト紙等からなる
円筒状のボビンであり、その外周にボイスコイ）ｖｌｌ
が設けられてい、る。そして、上記ボビン１ｏに設けた
ボイスコイル１１は上記磁気回路が構成する磁気空隙内
にピストン運動可能に配置されている。上記ボイスコイ
／Ｌ／１１はマグネシウム又はその合金からなるコイル
導体の外周にポリエステル、ポリエステルイミド等の絶
縁皮膜、およびポリアミド、ポリアミド、ポリアミドと
その反応性化合物等の融着皮膜を設けた線材より構成さ
れている。ここで、ボイスコイ／ｌ／１１を構成する線
材のコイル導体は下表より明らかなように従来のアルミ
ニウムや銅に比べて比重が著しく小さいものであり、そ
のボイヌコイ／Ｌ／１１自体の質量は小さく、引いては
振動系質は小さいものである。This edge 7 is held between a pedestal 8 and a presser 9 provided on the upper plate 4 and forms a tail. 1o is a cylindrical bobbin made of aluminum alloy, Kranoto paper, etc. provided on the diaphragm 6, and a voice coil (voice coil) is attached to the outer periphery of the bobbin.
is provided. The voice coil 11 provided on the bobbin 1o is arranged so as to be capable of piston movement within the magnetic gap formed by the magnetic circuit. The above-mentioned VOICECOI/L/11 is composed of a wire material with an insulating coating made of polyester, polyesterimide, etc., and a fusion coating made of polyamide, polyamide, polyamide and its reactive compound, etc. on the outer periphery of a coil conductor made of magnesium or its alloy. ing. Here, as is clear from the table below, the coil conductor of the wire that makes up VOICE COI/L/11 has a significantly lower specific gravity than conventional aluminum or copper, and the mass of VOICE COI/L/11 itself is small. , the quality of the vibration system is small.
上述のように構成した動電型スピーカの機械系等価回路
を第２図に示す。第２図において、ＭＭＶはボイスコイ
ル１１の質量、ＭＭＢはボビン１゜の質量、ＭＭＣは振
動板６の質量、ＣＭＢはボビン１０のコンプライアンス
、ＣＭＣは振動板６の付ケ根部分のコンプライアンス、
Ｉ（ＭＳは支持系（エツジ７）の機械損失、ＣＭＳは支
持糸のコンプライアンス、ＣＡＢは背面容量コンブライ
アン６パ−ミ′
ス、）（ＡＢは背面音響抵抗、ＺＭＥはボイスコイ／Ｌ
’１１の電気的インピーダンス、ＺＲは放射インピーダ
ンスである。FIG. 2 shows a mechanical equivalent circuit of the electrodynamic speaker constructed as described above. In FIG. 2, MMV is the mass of the voice coil 11, MMB is the mass of the bobbin 1°, MMC is the mass of the diaphragm 6, CMB is the compliance of the bobbin 10, CMC is the compliance of the base of the diaphragm 6,
I (MS is the mechanical loss of the support system (edge 7), CMS is the compliance of the support thread, CAB is the backside capacitance 6 permeance,) (AB is the backside acoustic resistance, ZME is the voice coil/L
'11 electrical impedance, ZR is radiation impedance.
第２図に示した等価回路より明らかなように、動電型ス
ピーカの高域共振周波数ｆｈはで決定され、ボイスコイ
ル１１の質量ＭＭＶが小さくなると高域共振周波数ｆｈ
が大全％す、高域側に移行することが理解される。した
が−て、上述した動電型スピーカの音圧周波数特性は第
３図の曲線ａに示すように帯域が拡大される。尚、第３
図中曲線すはアルミニウムをコイル導体とするボイスコ
イルを備える動電型スピーカの音圧周波数特性を示して
いる。As is clear from the equivalent circuit shown in FIG. 2, the high-frequency resonant frequency fh of the electrodynamic speaker is determined by
It is understood that the entire range shifts to the higher range side. Therefore, the sound pressure frequency characteristic of the electrodynamic speaker described above is expanded in band as shown by curve a in FIG. Furthermore, the third
The curved line in the figure shows the sound pressure frequency characteristics of an electrodynamic speaker equipped with a voice coil whose coil conductor is aluminum.
尚、上述した実施例では振動板に設けたボビンにマグネ
シウム又はその合金よりなるコイル導体ヲ用イてボイス
コイルを構成したものについて説明したが、これはリボ
ン形に構成してもよい。ま６ｔ−−’
た、この時、樹脂フィルムベース上に導体層を設けてお
いてエツチングによりボイスコイルを構成し、リボン形
としてもよい。In the above-described embodiment, the voice coil was constructed by using a coil conductor made of magnesium or its alloy on a bobbin provided on the diaphragm, but this may also be constructed in a ribbon shape. In addition, at this time, a conductor layer may be provided on the resin film base and the voice coil may be formed by etching to form a ribbon shape.
以上のように本発明によれば、ボイスコイル導体に比重
の小さいアルミニウム又はその合金を用いたので、ボイ
スコイルの質量を軽減して振動系質量を軽量化すること
ができる。したがって、高域限界周波数の拡大を図るこ
とができると共に過渡応答特性をよくして高域での音響
パワーレベルの向上を図ることができる利点を有するも
のである０As described above, according to the present invention, since aluminum or its alloy with low specific gravity is used for the voice coil conductor, the mass of the voice coil can be reduced and the mass of the vibration system can be reduced. Therefore, it has the advantage that it is possible to expand the high frequency limit frequency, improve transient response characteristics, and improve the sound power level in the high frequency range.
第１図は本発明の動電型スピーカの一実施例を示す要部
断面図、第２図は同スピーカの等価回路図、第３図は同
スピーカと従来の動電型スピーカの再生音圧周波数の比
較特性図である。
１・・・・・・下プレート、２・・・・・・ポールピー
ス、３・・・・・・マグネット、４・・・・・・上プレ
ート、６・・・・・・磁気空隙、６・・・・・・振動板
、７・・・・・・エツジ、１ｏ・・・・・・ボビン、１
１・・・・・・ボイスコイル。
第１図
第３図
−ｆ（ＨｌンFig. 1 is a sectional view of essential parts showing an embodiment of the electrodynamic speaker of the present invention, Fig. 2 is an equivalent circuit diagram of the same speaker, and Fig. 3 is the reproduced sound pressure of the same speaker and a conventional electrodynamic speaker. FIG. 3 is a frequency comparison characteristic diagram. 1... Lower plate, 2... Pole piece, 3... Magnet, 4... Upper plate, 6... Magnetic gap, 6 ...Diaphragm, 7...Edge, 1o...Bobbin, 1
1...Voice coil. Figure 1 Figure 3-f (Hln)
Claims (1)
た動電型スピーカ。An electrodynamic speaker equipped with a voice coil made of magnesium or its alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13118781A JPS5833400A (en) | 1981-08-20 | 1981-08-20 | Dynamic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13118781A JPS5833400A (en) | 1981-08-20 | 1981-08-20 | Dynamic loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5833400A true JPS5833400A (en) | 1983-02-26 |
Family
ID=15052045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13118781A Pending JPS5833400A (en) | 1981-08-20 | 1981-08-20 | Dynamic loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249680U (en) * | 1985-09-17 | 1987-03-27 |
-
1981
- 1981-08-20 JP JP13118781A patent/JPS5833400A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249680U (en) * | 1985-09-17 | 1987-03-27 | ||
| JPH0335903Y2 (en) * | 1985-09-17 | 1991-07-30 |
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