JPH01256900A - Diaphragm for acoustic device - Google Patents
Diaphragm for acoustic deviceInfo
- Publication number
- JPH01256900A JPH01256900A JP63086007A JP8600788A JPH01256900A JP H01256900 A JPH01256900 A JP H01256900A JP 63086007 A JP63086007 A JP 63086007A JP 8600788 A JP8600788 A JP 8600788A JP H01256900 A JPH01256900 A JP H01256900A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- honeycomb core
- alloy
- particles
- internal loss
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 229910018507 Al—Ni Inorganic materials 0.000 claims description 6
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 13
- 239000013078 crystal Substances 0.000 abstract description 6
- 239000011856 silicon-based particle Substances 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 4
- 230000005496 eutectics Effects 0.000 abstract description 3
- 241000264877 Hippospongia communis Species 0.000 abstract 3
- 229910018125 Al-Si Inorganic materials 0.000 abstract 1
- 229910018520 Al—Si Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 12
- 238000005452 bending Methods 0.000 description 6
- 229910052726 zirconium Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 241000269851 Sarda sarda Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は音響装置用振動板に関するものであり、％に
音響装置用振動板を構成するハニカムコアに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diaphragm for an audio device, and more particularly, to a honeycomb core constituting the diaphragm for an audio device.
一般に、ハニカム構造体からなる音響装置用振動板は、
第４図（ａバｂ）に示すように、天然または合成繊維の
単独紙、混合紙または樹脂フィルム、アルミニウムなど
の金属箔等からなるハニカム構造体ｉｌ＋の両面に、ス
キン材（２ａ）、（２ｂ）を貼着した構造を有する。ま
た、第５図（ａバｂ）に示すように。Generally, a diaphragm for an acoustic device made of a honeycomb structure is
As shown in FIG. 4 (a-b), skin materials (2a), ( It has a structure in which 2b) is attached. Also, as shown in FIG. 5 (a and b).
ハニカム構造体ｉｌ＋の各コア内に発泡樹脂（３）を充
填した構造のものがある。なお１図中（４）はハニカム
コア…とスキン材（２ａ）、（２ｂ） ｔ−貼着する接
着剤である。There is a structure in which each core of the honeycomb structure il+ is filled with foamed resin (3). Note that (4) in Figure 1 is an adhesive that adheres the skin materials (2a) and (2b) to the honeycomb core.
次に、第４図及び第５図に示すものの動作について説明
する。一般に、音響装置用摂動板（以下撮動板とする）
としては、比弾性率シ１曲げ剛ρ
性Ｅ・工および内部損失Ｉが大であることが要求される
。なお、Ｅはヤング率、ρは密度、工は断面２次モーメ
ントである。ここで、比弾性率シがρ
大きい程、限界共撮周波数が高くなり、再生周波数帯域
が拡大される。また９曲げ剛性Ｅ・工が太きい程、歪み
が低減され、内部損失が大きい程９機械的共振の鋭さＱ
値が減少して特性の平坦化が計れ、音質性能の良好な振
動板となる。従来、このような見地から、撮動板として
ハニカム構造体が採用されている。ここで２曲げ剛性Ｅ
・工は振動板の厚さの３乗に比例するが、ハニカム構造
体にすれば、はとんど重量の増加なしに（厚くしてもほ
とんど中空であり９本来、撮動板の占めるコア材の重量
は１０〜２０％前後で増加しても撮動板重量には大きく
影響しない）１曲げ剛性を向上させることができる。例
えば、厚さを２倍にすれば曲げ剛性Ｅ弓は８倍になる。Next, the operation of the apparatus shown in FIGS. 4 and 5 will be explained. Generally, perturbation plate for acoustic equipment (hereinafter referred to as imaging plate)
As such, it is required that the specific elastic modulus, 1, the bending stiffness, ρ, the bending stiffness, E, and the internal loss, I, be large. In addition, E is Young's modulus, ρ is density, and E is the second moment of area. Here, the larger the specific elastic modulus ρ, the higher the limit co-photography frequency becomes, and the reproduction frequency band is expanded. In addition, the thicker the 9 bending rigidity E, the lower the distortion, and the larger the internal loss, the 9 mechanical resonance sharpness Q.
As the value decreases, the characteristics become flat, resulting in a diaphragm with good sound quality performance. Conventionally, from this point of view, a honeycomb structure has been employed as an imaging plate. Here, 2 bending stiffness E
・The thickness of the diaphragm is proportional to the cube of the thickness of the diaphragm, but if you use a honeycomb structure, there will be no increase in weight (even if it is thick, it will be mostly hollow, and the core occupied by the diaphragm will be Even if the weight of the material increases by around 10 to 20%, it does not significantly affect the weight of the imaging plate.1) The bending rigidity can be improved. For example, doubling the thickness will increase the bending stiffness E-bow by eight times.
また、比弾性率／ｐを大きくさせるためには２通常スキ
ン材のヤング率の大きい材料が用いられている。Further, in order to increase the specific elastic modulus/p, a skin material having a large Young's modulus is usually used.
従来の撮動板は１以上のように構成されているので、比
弾性率／ｐの大きいスキン材は、その内部損失ηが非常
に小さく、又、ハニカムコアも比弾性率に優れるアルミ
ニウムなどの金属箔は、内部損失ηが小さいため１周波
数特性において、ピーク・デイツプが生じ良好な特性が
得られなかった。また、内部損失を大きくするために１
紙、高分子系のコアを用いると、比弾性率が低く、限界
共振周波数が低くなってしまう問題があった。さらに、
コア内に発泡樹脂を充てんすると重量が増加し１本来の
ハニカム構造体使用の特徴である軽量高剛性化が損われ
る問題があった。また、高域再生周波数帯域を考えると
、ハニカムコアのセル寸法で決まるセル共振が起こり２
周波数特性の乱れ、音圧歪の増加となり、音質性能が劣
化する欠点があった。Since the conventional imaging plate is configured as 1 or more, the skin material with a large specific elastic modulus/p has a very small internal loss η, and the honeycomb core is also made of aluminum or other material with an excellent specific elastic modulus. Since the metal foil has a small internal loss η, a peak/dip occurs in the single frequency characteristic, and good characteristics cannot be obtained. Also, in order to increase the internal loss,
When a paper or polymer-based core is used, there is a problem that the specific elastic modulus is low and the critical resonance frequency is low. moreover,
When the core is filled with foamed resin, the weight increases and there is a problem in that the original feature of using a honeycomb structure, which is lightweight and high rigidity, is lost. In addition, when considering the high frequency reproduction frequency band, cell resonance determined by the cell dimensions of the honeycomb core occurs.
This has the disadvantage of disrupting frequency characteristics and increasing sound pressure distortion, resulting in deterioration of sound quality performance.
この発明は、上記の様な課題全解消するためになされた
もので、ハニカム構造体の特徴を損わずに振動板全体の
比弾性率及び内部損失を向上させ。This invention was made to solve all of the above-mentioned problems, and improves the specific elastic modulus and internal loss of the entire diaphragm without impairing the characteristics of the honeycomb structure.
しかも加工性、取扱い性で優れた撮動板を得ることを目
的とするものである。Moreover, the object is to obtain an imaging plate with excellent workability and handling properties.
この発明に係る振動板は、ハニカムコアを構成する材料
として防振性アルミニウム合金（Ａｌ−８％系合金、又
はＡｔ−Ｎｉ系合金）の箔を用いたものである。The diaphragm according to the present invention uses a vibration-proof aluminum alloy (Al-8% alloy or At-Ni alloy) foil as the material constituting the honeycomb core.
この発明における摂動板は、ハニカムコアを構成する材
料として防振性アルミニウム合金（Ａｌ−Ｓｉ系合金、
又はＡｌ−Ｎｉ系合金）１用いることにより、ハニカム
コア自体の内部損失を増大させ。The perturbation plate in this invention uses a vibration-proof aluminum alloy (Al-Si alloy) as a material constituting the honeycomb core.
or Al-Ni alloy) 1 increases the internal loss of the honeycomb core itself.
振動板全体の比弾性率、内部損失を向上させる。Improves the specific elastic modulus and internal loss of the entire diaphragm.
以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図（ａＪ （ｂ）はこの発明の一実施例を示し１図
において、 （１ａ）は防振性アルミニウム合金で構成
したハニカムコアであり、このハニカムコア（１ａ）の
両面にスキン材Ｃ２Ｃ）Ｃ２４）が貼着されている。FIG. 1 (aJ) (b) shows one embodiment of the present invention, and in FIG. ) C24) is attached.
なお、（４）はハニカムコア（１ａ）とスキン材（２ｃ
）（２ｄ）を貼着するための接着剤である。In addition, (4) is a honeycomb core (1a) and a skin material (2c).
) (2d).
次に、この発明においてハニカムコア自体いられる防振
性アルミニウム合金の実施例を４つ示す。Next, four examples of vibration-proof aluminum alloys in which the honeycomb core itself can be used in the present invention will be shown.
実施例１及び２は、Ａｌ−８％系合金、実施例３及び４
はＡｌ−Ｎｉ系合金である。Examples 1 and 2 are Al-8% alloys, Examples 3 and 4
is an Al-Ni alloy.
なお、これら各実施例の成分はいずれも重量百分率で示
しである。Note that the components in each of these Examples are expressed in weight percentages.
鰹施例１）（実施例２） （実施例３） （実施
例４）ｓｉ １０％ ａｌ １０チ Ｎｉ
６チ Ｎｉ ｌｉチＦｅ Ｏ，０５％
Ｐｅ Ｏ，０５％ Ｆｓ ０．０５％
Ｆｅ Ｏ，０５％Ｚｒ Ｏ，０５％ Ｚｒ ０
．０５％ Ｚｒ Ｏ，０５％ Ｚｒ ０
．０５％ＭＭ Ｏ，１％ ＭＭ Ｑ、１％
ＭＭ Ｏ，１％ ＭＭ Ｏ，１％Ｎａ Ｏ
，００２％ Ｓｎ Ｑ、０９％ Ａｌ 残り
ａｎ ｏ、ｏｓ％Ａｌ 残り Ａ
ｌ 残り Ａｌ 残
りなお上記各実施例の「ＭＭ」とはミツシュメタルであ
り、この組成は、 Ｌａ ３５％、 Ｃｏ ４３％。Bonito Example 1) (Example 2) (Example 3) (Example 4) si 10% al 10chi Ni
6chi Ni lichi Fe O, 05%
Pe O, 05% Fs 0.05%
Fe O, 05% Zr O, 05% Zr 0
．． 05% Zr O, 05% Zr 0
．． 05% MM O, 1% MM Q, 1%
MMO, 1% MMO, 1% NaO
,002% Sn Q, 09% Al remaining an o, os% Al remaining A
l Remaining Al Remaining "MM" in each of the above examples is Mitsushi metal, whose composition is 35% La and 43% Co.
Ｎｄ １５％、Ｐｒ ４％ 、ｓｍ １％、Ｙ他２％で
ある。Nd 15%, Pr 4%, sm 1%, Y and others 2%.
防振性アルミニウム合金の減衰能の原因、及び機構は、
第２相粒子とマトリックスの境界、結晶粒界及びセル粒
界での粘性流動並びに転位・空孔及び積ノー欠陥等の結
晶中の微小欠陥による振動エネルギーの吸収が考えられ
る。The causes and mechanisms of the damping ability of anti-vibration aluminum alloys are as follows:
It is thought that vibrational energy is absorbed by viscous flow at the boundaries between the second phase particles and the matrix, grain boundaries, and cell grain boundaries, and micro defects in the crystal such as dislocations, vacancies, and product no defects.
減衰能ｑ は、外部から与えられた振動エネルギーを熱
エネルギーに変換する尺度を示し。Damping capacity q is a measure of converting externally applied vibrational energy into thermal energy.
ギーに変換するエネルギー で表わされる。energy converted into energy It is expressed as
本発明の実施例ｆｉ＋ （２１で使ったＡｌ−８ｉ系合
金は。The Al-8i alloy used in Example fi+ (21) of the present invention is.
Ａｌ中にＳｉを添加すると、マトリックスであるＡｌ中
にＳｉ粒子が析出し、共晶結晶を形成する。そして第２
相であるＳｉ粒子の界面が振動を吸収し。When Si is added to Al, Si particles are precipitated in the Al matrix to form a eutectic crystal. and the second
The interface between the Si particles, which is the phase, absorbs vibrations.
減衰能Ｑ を向上させるものである。This improves the damping ability Q.
Ｆｅ 、Ｚｒ 、Ｖ、Ｔｉ及び希土類元素は、結晶を微
細化して粒界を増加させる働きが、またＮａ、Ｓｒは、
ｓｉ粒子を微細化する働きがある。また前記実施例２の
ようにＳｎを含有させると結晶粒界に、微細に析出し２
粒界の粘性を増大させ、減衰能を向上させる。Fe, Zr, V, Ti, and rare earth elements have the function of refining crystals and increasing grain boundaries, and Na and Sr have the function of
It has the function of making Si particles finer. Furthermore, when Sn is included as in Example 2, fine precipitation occurs at grain boundaries.
Increases grain boundary viscosity and improves damping ability.
本発明の実施例Ｉｌ＋（２１における各成分の好ましい
それぞれの範囲（重量百分率）は次の表１の通りであり
、それより多くても少なくても下記の様な問題を生ずる
。The preferred ranges (weight percentages) of each component in Example Il+ (21) of the present invention are shown in Table 1 below, and if the range is greater or less than that, the following problems will occur.
以Ｔぶ白
また１本発明の実施例ｉｌ＋＋２１のＡｌ−Ｓｉ系合金
においては、その結晶組織について第２相粒子（Ｓ１粒
子）の平均粒子径が１０μｍ以下であることが好ましく
、１０μｍ以下とすることによって第２相粒子の界面を
増大させ、大きい減衰能を得ることができる。In addition, in the Al-Si alloy of Example il++21 of the present invention, it is preferable that the average particle diameter of the second phase particles (S1 particles) is 10 μm or less, and is 10 μm or less. By doing so, the interface between the second phase particles can be increased and a large damping capacity can be obtained.
さらに上記平均粒子径が７μｍ以下であることがより好
ましく、５μｍ以下であることがさらに好ましい。Furthermore, the average particle diameter is more preferably 7 μm or less, and even more preferably 5 μm or less.
また９本発明の実施例１３１ ＋４１のＡｌ−Ｎｉ系合
金は、 ＡＩにＮ１を添加すると、マトリックスである
Ａｌ中に、Ｎｉ粒子が析出し、共晶組織を形成するもの
である。Further, in the Al-Ni alloy of Example 131 +41 of the present invention, when N1 is added to AI, Ni particles are precipitated in the Al matrix, forming a eutectic structure.
そして、第２相であるＡｌ３Ｎｉ粒子の界面が吸収し、
減衰能Ｑ を向上させる。Then, the interface of Al3Ni particles, which is the second phase, absorbs,
Improve damping capacity Q.
またＦｅ 、 Ｚｒ 、 Ｖ 、 Ｔｉ及び希土類元素
は。Also, Fe, Zr, V, Ti and rare earth elements.
結晶を微細化して粒界を増加させ減衰能Ｑ を向上させ
る。さらに前記実施例（４）のように、 ａｎを含有さ
せると、結晶粒界に微細に析出し１粒界の粘性を増大さ
せ、減衰能Ｑ を向上させることができる。The attenuation ability Q is improved by making the crystals finer and increasing the number of grain boundaries. Furthermore, as in Example (4), when an is contained, it precipitates finely at grain boundaries, increasing the viscosity of one grain boundary, and improving the damping ability Q.
また本発明の実施例＋３） （４１のＡｌ−Ｎｉ系合金
においては、その結晶組織について第２相（Ａｌ３Ｎ４
粒子）の平均粒子径が１０μｍ以下であることが好まし
く、１０μｍ以下とすることによって第２相粒子の界面
を増大させ、大きい減衰能を得ることができる。Further, Example +3 of the present invention) (In the Al-Ni alloy No. 41, the crystal structure has a second phase (Al3N4
It is preferable that the average particle diameter of the particles) is 10 μm or less, and by setting it to 10 μm or less, the interface of the second phase particles can be increased and a large damping ability can be obtained.
なお上記平均粒子径が７μｍ以下であることがより好ま
しく、５μｍ以下であることがさらに好ましい。In addition, it is more preferable that the said average particle diameter is 7 micrometers or less, and it is still more preferable that it is 5 micrometers or less.
次に本発明の実施例のＡｌ−Ｎｉ系合金、Ａｌ−８ｉ系
合金とＡｚ（ａＤｅ−１２）、及びＺｎ−Ａ１合金（商
品名：コスマール２）との比較を次の表３に示す。Next, Table 3 below shows a comparison between the Al-Ni alloy, Al-8i alloy, Az (aDe-12), and Zn-A1 alloy (trade name: Cosmar 2) of the examples of the present invention.
１゛人下４ソ６
上記衣からも明らかなように、減衰能。−１は本発明の
Ａｔ−Ｎｉ系＆金、Ａ４−Ｓｉ系合金ともに。1゛Under 4 So6 As is clear from the above clothing, it has a damping ability. -1 is both the At-Ni type & gold and A4-Si type alloys of the present invention.
Ａｌ（ＡＤＣ−１２）と比較して１桁以上大きい。これ
により、振動板全体の内部損失を従来構成より著しく向
上させることができ、ハニカムコアトシてきわめて良好
である。また、比弾性率もコアとして優秀な性質を持つ
アルミニウムに比べて何らそん色がなく、又、 ｋｌ−
６０％Ｚｎ（：ｙｙ、マールＺ ） ｊす、比弾性率Ｅ
／ρが優れ、軽皺化を計ることができる。また、良好な
減衰能を備えているので、振動板全体の内部損失を得る
ために、従来性なわれていたスキン材に内部損失を待た
せるような処理（結果的にスキン材の比弾性率を小さく
せざるを得ない）が必要なくなる。さらに、優れた減衰
能の為、高域再生周波数帯域で発生するハニカムコアの
セル共振を低減することも可能である。It is more than one order of magnitude larger than Al (ADC-12). As a result, the internal loss of the entire diaphragm can be significantly improved compared to the conventional structure, and the honeycomb core structure is extremely good. In addition, the specific modulus of elasticity is not similar to that of aluminum, which has excellent properties as a core, and
60% Zn (:yy, Marl Z), specific modulus E
/ρ is excellent and can reduce wrinkles. In addition, since it has good damping ability, in order to obtain the internal loss of the entire diaphragm, the conventional skin material is treated to wait for internal loss (as a result, the specific elastic modulus of the skin material is ) is no longer necessary. Furthermore, due to its excellent damping ability, it is also possible to reduce the cell resonance of the honeycomb core that occurs in the high reproduction frequency band.
第２図、第３図は上述の実施例による特性を示す特性図
であり、実線が従来品、波線が実施例のものを示してお
り１周波数特性及び音圧型が改善されているのがわかる
。Figures 2 and 3 are characteristic diagrams showing the characteristics of the above-mentioned embodiment, where the solid line shows the conventional product and the wavy line shows the embodiment, and it can be seen that the frequency characteristics and sound pressure type are improved. .
以上のように、この発明によれば、ハニカムコアを防振
性アルミニウム合金で形成する構造にしたので、ハニカ
ム振動板の特徴である軽量、高曲げ剛性を損わすに、よ
り大きな内部損失のある振動板が得られ、スキン材選択
も自由度が大きくなる（内部損失が小さくても比弾性率
の高い材料が採用できる）効果があり、さらに安価で作
業性が良くなる効果がある。As described above, according to the present invention, since the honeycomb core is made of a vibration-proof aluminum alloy, it has a structure in which the honeycomb diaphragm has a structure in which it is made of a vibration-proof aluminum alloy. A diaphragm can be obtained, the skin material can be selected with greater freedom (a material with a high specific modulus of elasticity can be used even if the internal loss is small), and it is also cheaper and easier to work with.
第１図（ａ）（ｂ）は、この発明の一実施例を示す断面
図及び断面側面図、第２図は、従来品と本発明による周
波数特性の一例を示す図、第３図は、同じ〈従来品と本
発明による音圧歪特性の一例を示す図、第４図（ａバｂ
）及び第５図（ａ）Ｃｂ）は夫々従来の振動板を示す断
面図及び断面側面図である。
口ｒ 、 （ｔａ）・−身ハニヵムコアなお９図中同一
符号は同−又は相轟部分を示す。FIGS. 1(a) and (b) are a cross-sectional view and a cross-sectional side view showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the frequency characteristics of a conventional product and the present invention, and FIG. Figure 4 shows an example of the sound pressure distortion characteristics of the conventional product and the present invention.
) and FIGS. 5(a) and 5(cb) are a cross-sectional view and a cross-sectional side view, respectively, showing a conventional diaphragm. Note that the same reference numerals in Figure 9 indicate the same or similar parts of the honeycomb core.
Claims (2)
ハニカム構造体を構成した音響装置用振動板において、
上記ハニカムコアを構成する材料として防振性アルミニ
ウム合金を用いたことを特徴とする音響装置用振動板。(1) In a diaphragm for an acoustic device in which a honeycomb structure is constructed by applying skin materials to the front and back surfaces of a honeycomb core,
A diaphragm for an acoustic device, characterized in that a vibration-proof aluminum alloy is used as a material constituting the honeycomb core.
％含んだＡｌ−Ｎｉ系合金又はＳｉを８〜２０重量％含
んだＡｌ−Ｓｉ系合金の何れかであることを特徴とする
特許請求の範囲第１項に記載の音響装置用振動板。(2) A patent characterized in that the anti-vibration aluminum alloy is either an Al-Ni alloy containing 4 to 10% by weight of Ni or an Al-Si alloy containing 8 to 20% by weight of Si. A diaphragm for an acoustic device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63086007A JPH0744754B2 (en) | 1988-04-07 | 1988-04-07 | Diaphragm for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63086007A JPH0744754B2 (en) | 1988-04-07 | 1988-04-07 | Diaphragm for audio equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01256900A true JPH01256900A (en) | 1989-10-13 |
| JPH0744754B2 JPH0744754B2 (en) | 1995-05-15 |
Family
ID=13874637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63086007A Expired - Lifetime JPH0744754B2 (en) | 1988-04-07 | 1988-04-07 | Diaphragm for audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744754B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732349A (en) * | 1980-07-31 | 1982-02-22 | Mitsubishi Keikinzoku Kogyo Kk | Damping aluminum alloy |
| JPS6045596A (en) * | 1983-08-22 | 1985-03-12 | Tadashi Kamikubo | Production of dipeptide |
| JPS62180699A (en) * | 1986-02-05 | 1987-08-07 | Mitsubishi Electric Corp | Diaphragm for acoustic device |
-
1988
- 1988-04-07 JP JP63086007A patent/JPH0744754B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732349A (en) * | 1980-07-31 | 1982-02-22 | Mitsubishi Keikinzoku Kogyo Kk | Damping aluminum alloy |
| JPS6045596A (en) * | 1983-08-22 | 1985-03-12 | Tadashi Kamikubo | Production of dipeptide |
| JPS62180699A (en) * | 1986-02-05 | 1987-08-07 | Mitsubishi Electric Corp | Diaphragm for acoustic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744754B2 (en) | 1995-05-15 |
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