JPS5810999A - Speaker - Google Patents
SpeakerInfo
- Publication number
- JPS5810999A JPS5810999A JP10989581A JP10989581A JPS5810999A JP S5810999 A JPS5810999 A JP S5810999A JP 10989581 A JP10989581 A JP 10989581A JP 10989581 A JP10989581 A JP 10989581A JP S5810999 A JPS5810999 A JP S5810999A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- speaker
- phase
- martensite
- frequency
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はスピーカーの振動板材料に関し、スピーカーの
音を発する振動板に熱弾性型マルテンサイト変態を生ず
る超弾性合金を用いて、スピーカーの周波数特性を改善
しようとするものである。[Detailed Description of the Invention] The present invention relates to a diaphragm material for a speaker, and aims to improve the frequency characteristics of a speaker by using a superelastic alloy that undergoes thermoelastic martensitic transformation for the diaphragm that emits the sound of the speaker. It is.
現在スピーカーとして、中・低音域では主にコーンスピ
ーカーが用いられている。これはムービン、グコイルに
より円錐形振動板を振動させて音を発するものである。Currently, cone speakers are mainly used in the mid- and low-frequency ranges. This produces sound by vibrating a conical diaphragm using a moving coil.
又、高音域専用としてリボンライターがある。これは、
金属箔に電流を流して振動させ、この金属箔自身が音を
発するものである〇
一般にスピーカーにおいては、音を発する振動板は、あ
る範囲の周波数帯域で音を発する必要があり、しかもそ
の周波数特性はフラットであることが理想である。There is also a ribbon lighter specifically for the high range. this is,
A current is passed through a metal foil to cause it to vibrate, and the metal foil itself emits sound. In general, in a speaker, the diaphragm that emits sound must emit sound within a certain frequency range, and that frequency Ideally, the characteristics should be flat.
しかし、従来のスピーカーではある周波数で振動板が固
有振動を起こし、その周波数において音が異常に大きく
なってしまう。この固有振動を起こす周波数は振動板材
料の密度と剛性によって定まシ、又固有振動の大きさは
材料の内部摩擦係数によって定まるのであるが、従来用
いられている材料ではどうしても固有周波数が使用周波
数帯域に存在し又内部摩擦も十分でないためフラットな
周波数特性が得られなかった。However, in conventional speakers, the diaphragm causes natural vibration at a certain frequency, and the sound becomes abnormally loud at that frequency. The frequency that causes this natural vibration is determined by the density and rigidity of the diaphragm material, and the magnitude of the natural vibration is determined by the internal friction coefficient of the material, but with conventional materials, the natural frequency is inevitably the operating frequency. flat frequency characteristics could not be obtained because the internal friction was not sufficient.
本発明はこのような点を考慮してなされたものであり、
共振を防いでスピーカーの周波数特性の改善を図るもの
である。すなわち、スピーカーの振動板材料として熱弾
性型マルテンサイト変態をする超弾性合金を用い共振を
防止するものである。The present invention has been made in consideration of these points,
This is to prevent resonance and improve the frequency characteristics of the speaker. That is, a superelastic alloy that undergoes thermoelastic martensitic transformation is used as the diaphragm material of the speaker to prevent resonance.
熱弾性型マルテンサイト変態をするこの合金は、ある変
態温度以上では母相を示し、この温度以下ではマルテン
サイト相を生じる。マルテンサイト相から母相にマルテ
ンサイト逆変態する温度をマルテンサイト逆変態温度、
母相からマルテンサイト相へ変態する温度をマルテンサ
イト変態温度という。このマルテンサイト変態温度とマ
ルテンサイト逆変態温度の差は、数度Ｃから数十度Ｃで
ある。熱弾性型マルテンサイト変態を生じる合金は、マ
ルテンサイト′相の双晶境界や母相とマルテンサイト相
の境界を内在させている。この合金に外部から振動が与
えられたとき、上記の双晶境界や相境界は移動し振動エ
ネルギ〜を消費する。このため、この合金は防振材料と
して有用なものである□このような特性を持つ合金の例
として、ＴｉＮ３合金、ＣｕＡｔＺｎ合金がよく知られ
ている。This alloy, which undergoes thermoelastic martensitic transformation, exhibits a matrix phase above a certain transformation temperature, and forms a martensitic phase below this temperature. The temperature at which martensite reverse transforms from the martensite phase to the parent phase is called the martensite reverse transformation temperature.
The temperature at which the parent phase transforms into the martensitic phase is called the martensitic transformation temperature. The difference between the martensite transformation temperature and the martensite reverse transformation temperature is from several degrees Celsius to several tens of degrees Celsius. Alloys that undergo thermoelastic martensitic transformation contain twin boundaries of the martensite' phase and boundaries between the parent phase and the martensitic phase. When vibrations are applied to this alloy from the outside, the twin boundaries and phase boundaries mentioned above move and consume vibrational energy. Therefore, this alloy is useful as an anti-vibration material.TiN3 alloy and CuAtZn alloy are well known as examples of alloys having such characteristics.
一般に共振を防ぐには、内部摩擦の大きな材料を用いれ
ばよいが、スピーカーの振動板はある程度の剛性と軽量
であることが必要でありこれまで適当な材料が存在しな
かった。本発明で用いる熱弾性型マルテンサイト変態を
生じる超弾性合金は、図面に示す如く、機械的強度並び
に防振性能も優れている。したがって、スピーカーの振
動板にこの合金を用いることにより共振周波数における
ピーク値を下げることができる。又、共振周波数以外の
周波数における振幅は内部摩擦係数にはあまシ影響され
ないので、従来の材料と同程度の振幅が得られる。すな
わち、従来のスピーカーの周波数特性と比較した場合、
共振時のピーク値のみを下げた特性となり、よりフラッ
トな周波数特性が得られる。In general, to prevent resonance, it is sufficient to use a material with high internal friction, but the diaphragm of a speaker needs to have a certain degree of rigidity and light weight, and until now no suitable material has existed. The superelastic alloy that undergoes thermoelastic martensitic transformation used in the present invention has excellent mechanical strength and anti-vibration performance, as shown in the drawings. Therefore, by using this alloy for the diaphragm of a speaker, the peak value at the resonant frequency can be lowered. Furthermore, since the amplitude at frequencies other than the resonance frequency is not affected by the internal friction coefficient, amplitudes comparable to those of conventional materials can be obtained. In other words, when compared with the frequency characteristics of conventional speakers,
The characteristic is that only the peak value at resonance is lowered, and a flatter frequency characteristic can be obtained.
さらに本発明では上記のように超弾性合金をスピーカー
用の振動板材料として用いるだけでなく、リボンライタ
ーの場合にリボン部分にも合金箔として用いれば一層良
好な周波数特性が得られる。Furthermore, in the present invention, in addition to using a superelastic alloy as a diaphragm material for a speaker as described above, even better frequency characteristics can be obtained by using the superelastic alloy as an alloy foil for the ribbon portion of a ribbon lighter.
以上のように、本発明によれば共振ピークを防ぎフラッ
トな周波数特性が得られ入力信号を忠実に再生できるの
で極めて顕著な効果を有する。As described above, according to the present invention, resonance peaks can be prevented, flat frequency characteristics can be obtained, and input signals can be reproduced faithfully, resulting in extremely remarkable effects.
４ＪＩＦ４吉、スピーカーに用いる各種材料の防振係数
を示した特性図である０
代理人 弁理士 福 士 愛 彦
５１ｒｆｔｑ 弥ニー（ｋｇ ／ｍｒｌ ）手続補正書
１．・１１件の表示
特願昭５６−１０９８９５
２、発明の名称
スピーカー
３、補正をする老
４、代 理 人
自 発
６、補正の対象
（１）明細書の特許請求の範囲の欄
７、補正の内容
（１）明細書の特許請求の範囲の第２項を別紙の通り削
除する。
（２）明細書の第４頁第１３行乃至第１６行目を削除す
る。
以 上
特許請求の範囲
１、 スピーカー用振動板材料として熱弾性型マルテン
サイト変態を生ずる超弾性合金を用いることを特徴とす
るスピーカー。
代理人 弁理士 福 士 愛 彦
５4JIF4Kichi is a characteristic diagram showing the vibration damping coefficient of various materials used for speakers0 Agent Patent Attorney Aihiko Fukushi 51rftq Yani (kg/mrl) Procedural Amendment 1.・11 designated patent applications 1982-109895 2. Name of the invention Speaker 3. Amendment made 4. Spontaneous action by the agent 6. Subject of amendment (1) Claims column 7 of the specification, Amendment Contents (1) Paragraph 2 of the claims of the specification is deleted as shown in the attached sheet. (2) Delete lines 13 to 16 on page 4 of the specification. Claim 1: A speaker characterized in that a superelastic alloy that undergoes thermoelastic martensitic transformation is used as a diaphragm material for the speaker. Agent Patent Attorney Aihiko Fuku 5
Claims (1)
イト変態を生ずる超弾性合金を用いることを特徴とする
スピーカー０ ２、 リボンライターの振動板材料として熱弾性型マル
テンサイト変態を生ずる超弾性合金を用いるとともにリ
ボン部にも前記超弾性合金を用いたことを特徴とするス
ピーカー。[Claims] 1. A speaker 0 characterized in that a superelastic alloy that undergoes thermoelastic martensitic transformation is used as a diaphragm material for a speaker. 2. A speaker that uses a thermoelastic martensitic transformation as a diaphragm material for a ribbon lighter. 1. A speaker characterized in that a superelastic alloy produced in the United States is used and the superelastic alloy is also used in a ribbon portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10989581A JPS5810999A (en) | 1981-07-13 | 1981-07-13 | Speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10989581A JPS5810999A (en) | 1981-07-13 | 1981-07-13 | Speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5810999A true JPS5810999A (en) | 1983-01-21 |
Family
ID=14521875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10989581A Pending JPS5810999A (en) | 1981-07-13 | 1981-07-13 | Speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810999A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131894A (en) * | 1982-02-01 | 1983-08-05 | Nhk Spring Co Ltd | Loudspeaker |
| JPS58131897A (en) * | 1982-02-01 | 1983-08-05 | Nhk Spring Co Ltd | Louspeaker |
| JPH01275787A (en) * | 1988-04-26 | 1989-11-06 | Nippon Steel Corp | Method for degreasing oil-containing fibrous metal |
-
1981
- 1981-07-13 JP JP10989581A patent/JPS5810999A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131894A (en) * | 1982-02-01 | 1983-08-05 | Nhk Spring Co Ltd | Loudspeaker |
| JPS58131897A (en) * | 1982-02-01 | 1983-08-05 | Nhk Spring Co Ltd | Louspeaker |
| JPH029519B2 (en) * | 1982-02-01 | 1990-03-02 | Nhk Spring Co Ltd | |
| JPH01275787A (en) * | 1988-04-26 | 1989-11-06 | Nippon Steel Corp | Method for degreasing oil-containing fibrous metal |
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