JPS5857038B2 - Method for manufacturing diaphragm for electroacoustic transducer - Google Patents
Method for manufacturing diaphragm for electroacoustic transducerInfo
- Publication number
- JPS5857038B2 JPS5857038B2 JP2983676A JP2983676A JPS5857038B2 JP S5857038 B2 JPS5857038 B2 JP S5857038B2 JP 2983676 A JP2983676 A JP 2983676A JP 2983676 A JP2983676 A JP 2983676A JP S5857038 B2 JPS5857038 B2 JP S5857038B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- boron
- titanium
- present
- electroacoustic transducer
- 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
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は軽量でヤング率が高く、従って変換能率が良く
、過渡特性および周波数特性のすぐれた電気音響変換器
用振動板に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm for an electroacoustic transducer that is lightweight, has a high Young's modulus, has good conversion efficiency, and has excellent transient characteristics and frequency characteristics.
スピーカ等の電気音響変換器、特に可聴周波数帯域にお
ける高域周波数帯域を一様に、しかも変換能率良く、す
ぐれた過ば特性で再生しようとする場合に、振動板の材
料としては密度ρが小さく、かつヤング率Ｅが商いこと
が要求される。Electroacoustic transducers such as speakers, especially when trying to reproduce high frequencies in the audible frequency range uniformly, with high conversion efficiency, and with excellent error characteristics, the material for the diaphragm has a low density ρ. , and Young's modulus E is required to be .
しかしながら、これらの物理特性は互に相反する性質の
ものであり、振動板材料としては単位重量当りのヤング
率すなわち比ヤング率Ｅ／ｐの大きいことが要求される
こととなる。However, these physical properties are contradictory to each other, and the diaphragm material is required to have a high Young's modulus per unit weight, that is, a high specific Young's modulus E/p.
従来スピーカの振動板材料としては、アルミニウム、チ
タン等の軽金属が用いられているが、比ヤング率はそれ
ぞれ２．６１ Ｘ １０１０ゞン およびｘｏＮｍ
ｋ？
２．６２ｘ１０ ４．であり、スピーカの振動板材料
としては、いまだ充分満足されるものではなかった。Light metals such as aluminum and titanium have been used as diaphragm materials for conventional speakers, and their specific Young's moduli are 2.61 x 1010 in and xoNm, respectively.
k? 2.62x10 4. Therefore, it has not yet been fully satisfied as a diaphragm material for a speaker.
本発明はボロンＢが振動板材料として、すぐれた特性を
有することに着目して発明されたものである。The present invention was developed based on the fact that boron B has excellent properties as a diaphragm material.
すなわちボロンは密度ρ＝２．３５”ｆ／３と従来用い
られていたアルミニウムあるいはチタンより軽く、比ヤ
ング率Ｅ／−１８，７８×１０１ＯＮｒｌ／ρ
ｈ
と高い。In other words, boron has a density ρ=2.35”f/3, which is lighter than conventionally used aluminum or titanium, and a specific Young's modulus E/-18.78×101ONrl/ρ.
h and high.
しかしながらボロンの最大の欠点は機械的強度が弱いこ
とであるから、ボロン単体での使用は不可能である。However, the biggest drawback of boron is that it has low mechanical strength, so it is impossible to use boron alone.
本発明はボロンとチタンとを金属間結合せしめ、両者の
化合物によって振動板を形成するものである。The present invention involves intermetallic bonding of boron and titanium, and forms a diaphragm with a compound of the two.
本発明によって製造された振動板はボロン単体に比べ機
械的強度にすぐれ、しかもアルミニウム、チタン等に比
べて質量が小さく、比ヤング率が太きい。The diaphragm manufactured by the present invention has superior mechanical strength compared to boron alone, has a smaller mass, and has a higher specific Young's modulus than aluminum, titanium, etc.
次に本発明の実施例を図面について説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の振動板の製造装置を示すもので、図に
おいてｉａ、ｌｂは夫々ルツボで、これらルツボ内にボ
ロン２ａ、チタン２ｂを充填する。FIG. 1 shows an apparatus for manufacturing a diaphragm according to the present invention. In the figure, ia and lb are crucibles, and boron 2a and titanium 2b are filled into these crucibles.
３はフィラメントで電源４により夫々加熱され、該フィ
ラメント３とルツボ１ａ、１ｂとの間に、電源５により
高電圧を加えると、電子ビーム６が発生し、この電子ビ
ーム６によりボロン２ａ１チタン２ｂは加熱されて蒸気
化し、基型７上に蒸着する。3 is a filament which is heated by a power source 4, and when a high voltage is applied between the filament 3 and the crucibles 1a and 1b by a power source 5, an electron beam 6 is generated. It is heated and vaporized, and is deposited on the base mold 7.
この蒸着して形成された金属板はボロン及びチタンの化
合物で形成されており、この金属板を基型より剥ぎとっ
て振動板として用いる。The metal plate formed by this vapor deposition is made of a compound of boron and titanium, and is peeled off from the base mold and used as a diaphragm.
この際、夫々の蒸発速度を制御することにより、各種の
特性を有する化合物をうろことが可能である。At this time, by controlling the evaporation rate of each compound, it is possible to obtain compounds having various properties.
その代表例をあげると次のようである。Typical examples are as follows.
第２図は本発明によって製造された振動板の形状を示す
。FIG. 2 shows the shape of a diaphragm manufactured according to the present invention.
第３図はアルミニウム振動板Ａ１ チタン振動板Ｂ、本
発明による振動板Ｃの周波数特性を示す。FIG. 3 shows the frequency characteristics of an aluminum diaphragm A1, a titanium diaphragm B, and a diaphragm C according to the present invention.
以上の通り本発明によれは、各ルツボ内にボロン、チタ
ンをそれぞれ充填し、前記各ルツボにそれぞれ設けらｉ
た電子ビーム加熱装置により加熱蒸発せしめ、かつその
蒸気を前記谷ルツボの上方に対向配置した単一の基型面
に蒸着せしめてボロンとチタンとの金属間化合物からな
る金属板を形威し、該金属板を前記基型より剥離して振
動板を製造するようにしたから、ボロンやチタンを基型
面に蒸着させる際、各電子ビーム加熱装置を制御して夫
々の蒸着速度を調節することにより、最適な物性を有す
る振動板を得ることができる。As described above, according to the present invention, each crucible is filled with boron and titanium, and each crucible is provided with i.
heating and evaporating it using an electron beam heating device, and depositing the vapor on a single base mold surface placed oppositely above the valley crucible to form a metal plate made of an intermetallic compound of boron and titanium; Since the diaphragm is manufactured by peeling the metal plate from the base mold, each electron beam heating device can be controlled to adjust the deposition speed when boron or titanium is deposited on the base mold surface. Accordingly, a diaphragm having optimal physical properties can be obtained.
しかして、本発明によって製造された振動板は、ボロン
とチタンとの金属間化合物からなる振動板であるから、
ボロンの特性を損うことなく、又ボロンの機械的な弱さ
を補うものである。However, since the diaphragm manufactured according to the present invention is a diaphragm made of an intermetallic compound of boron and titanium,
It compensates for the mechanical weakness of boron without impairing its properties.
又単にチタンの下地振動板表面にボロンを蒸着した場合
に比べ、ボロンが剥離する等の欠点がない。Furthermore, compared to simply depositing boron on the surface of the titanium base diaphragm, there is no drawback such as peeling off of the boron.
従って本発明による電気音響変換器用振動板は変換能率
が高く、過渡特性および周波数特性にすぐれ、第３図に
示すごとく、従来用いられていたアルミニウム振動板Ａ
１ チタン振動板Ｂに比べ、高域周波数特性が大巾に改
善されていることがわかる。Therefore, the electroacoustic transducer diaphragm according to the present invention has high conversion efficiency and excellent transient characteristics and frequency characteristics, and as shown in FIG.
1 It can be seen that the high frequency characteristics are greatly improved compared to titanium diaphragm B.
第１図は本発明の振動板の製造装置、第２図は本発明に
よって製造された振動板、第３図は本発明品と従来品と
の周波数特性を示す。
１ａ、Ｉｂ・・・・・・ルツボ、２ａ・・・・・・ボロ
ン、２ｂ・・・・・・チタン、３・・・・・・フィラメ
ント、４，５・・・・・・電源、６・・・・・・電子ビ
ーム、７・・・・・・基型、８・・・・・・振動板。FIG. 1 shows an apparatus for manufacturing a diaphragm according to the present invention, FIG. 2 shows a diaphragm manufactured according to the present invention, and FIG. 3 shows frequency characteristics of a product of the present invention and a conventional product. 1a, Ib... Crucible, 2a... Boron, 2b... Titanium, 3... Filament, 4, 5... Power supply, 6 ...Electron beam, 7...Basic mold, 8...Vibration plate.
Claims (1)
記各ルツボにそれぞれ設けられた電子ビーム加熱装置に
より加熱蒸発せしめ、かつその蒸気を前記谷ルツボの上
方に対向配置した単一の基型面に蒸着せしめてボロンと
チタンとの金属間化合物からなる金属板を形威し、該金
属板を前記基型より剥離してなることを特徴とした電気
音響変換器用振動板の製造方法。1 Fill a valley crucible with boron and titanium, heat and evaporate them using an electron beam heating device installed in each of the crucibles, and apply the vapor to a single base mold surface placed oppositely above the valley crucible. A method for manufacturing a diaphragm for an electroacoustic transducer, comprising forming a metal plate made of an intermetallic compound of boron and titanium by vapor deposition, and peeling the metal plate from the base mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2983676A JPS5857038B2 (en) | 1976-03-22 | 1976-03-22 | Method for manufacturing diaphragm for electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2983676A JPS5857038B2 (en) | 1976-03-22 | 1976-03-22 | Method for manufacturing diaphragm for electroacoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52113723A JPS52113723A (en) | 1977-09-24 |
| JPS5857038B2 true JPS5857038B2 (en) | 1983-12-17 |
Family
ID=12287089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2983676A Expired JPS5857038B2 (en) | 1976-03-22 | 1976-03-22 | Method for manufacturing diaphragm for electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857038B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10875684B2 (en) | 2017-02-16 | 2020-12-29 | Ball Corporation | Apparatus and methods of forming and applying roll-on pilfer proof closures on the threaded neck of metal containers |
| US11459223B2 (en) | 2016-08-12 | 2022-10-04 | Ball Corporation | Methods of capping metallic bottles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57148494A (en) * | 1981-03-10 | 1982-09-13 | Onkyo Corp | Manufacturing method of diaphragm for speaker |
-
1976
- 1976-03-22 JP JP2983676A patent/JPS5857038B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11459223B2 (en) | 2016-08-12 | 2022-10-04 | Ball Corporation | Methods of capping metallic bottles |
| US10875684B2 (en) | 2017-02-16 | 2020-12-29 | Ball Corporation | Apparatus and methods of forming and applying roll-on pilfer proof closures on the threaded neck of metal containers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52113723A (en) | 1977-09-24 |
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