JPH0433500A - Speaker unit - Google Patents
Speaker unitInfo
- Publication number
- JPH0433500A JPH0433500A JP2138350A JP13835090A JPH0433500A JP H0433500 A JPH0433500 A JP H0433500A JP 2138350 A JP2138350 A JP 2138350A JP 13835090 A JP13835090 A JP 13835090A JP H0433500 A JPH0433500 A JP H0433500A
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- speaker unit
- vibration
- total
- aluminum alloy
- 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
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910000838 Al alloy Inorganic materials 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
- 229910018507 Al—Ni Inorganic materials 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 239000011856 silicon-based particle Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims 4
- 229910018125 Al-Si Inorganic materials 0.000 claims 1
- 229910018520 Al—Si Inorganic materials 0.000 claims 1
- 229910052718 tin Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005855 radiation Effects 0.000 abstract description 6
- 229910021364 Al-Si alloy Inorganic materials 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 19
- 239000000203 mixture Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 150000002736 metal compounds Chemical class 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明はスピーカーユニット、特にそれの振動系部品
材料の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a speaker unit, and particularly to improvements in materials for vibration system components thereof.
［従来の技術］
第３図は、従来のスピーカーの振動系部品の一般的な構
造をドーム形を例にとって示す一部断面側面図で、図に
おいて、（１）はボイスコイル巻線。[Prior Art] Fig. 3 is a partial cross-sectional side view showing the general structure of the vibration system components of a conventional speaker, taking a dome shape as an example. In the figure, (1) is a voice coil winding.
（２）はボイスコイルボビン、（３）は振動板である。(2) is a voice coil bobbin, and (3) is a diaphragm.
以上の構成において、アルミ線や銅線よりなるボイスコ
イル巻線（１）の巻線部分が磁気回路の磁気ギャップ部
（図示されていない）に位置し、ボイスコイルに入力信
号が印加されると電気信号が機械振動に変換され、ボイ
スコイルボビン（２）が振動してその振動が振動板（３
）に伝達されて、空気振動が引起される。In the above configuration, the winding part of the voice coil winding (1) made of aluminum wire or copper wire is located in the magnetic gap part (not shown) of the magnetic circuit, and when an input signal is applied to the voice coil, The electrical signal is converted into mechanical vibration, the voice coil bobbin (2) vibrates, and the vibration is transmitted to the diaphragm (3).
), causing air vibrations.
このボイスコイル巻線（１）に要求される性能としては
、電気伝導度や被膜の電気絶縁性や、大入力時に対応す
る耐熱性等種々の特性があるが、上記の様にこのボイス
コイル巻線（１）がスピーカーでの振動の源となるため
、ボイスコイル巻線（１）自体の不要振動や残響による
不要輻射を抑えるために、内部損失の大きい材料又は構
造が要求されていた。The performance required for this voice coil winding (1) includes various characteristics such as electrical conductivity, electrical insulation of the coating, and heat resistance that can handle large inputs. Since the wire (1) is a source of vibration in the speaker, a material or structure with high internal loss has been required in order to suppress unnecessary vibrations of the voice coil winding (1) itself and unnecessary radiation due to reverberation.
また、ボイスコイルボビン（２）に用いられる材質につ
いても、振動板（３）を駆動する強度や難燃性とともに
、上記と同様内部損失の大きい事が必要である。更に振
動板（３）の素材としてはヤング率が大きく、比重が小
さく、内部損失の大きいことが音響性能上量も重視され
る。Furthermore, the material used for the voice coil bobbin (2) must have strength and flame retardancy for driving the diaphragm (3), as well as high internal loss as described above. Furthermore, it is important for the material of the diaphragm (3) to have a high Young's modulus, a low specific gravity, and a high internal loss in terms of acoustic performance.
［発明が解決しようとする課題］
従来のスピーカーユニットにおけるボイスコイル及び振
動板は以上のように構成されており、それらを構成する
従来一般に使用されている材料では、上述のような要求
を充分満足させるものではなく、特に内部損失が一般的
に小さかった。[Problems to be Solved by the Invention] The voice coil and diaphragm in a conventional speaker unit are constructed as described above, and the materials that are conventionally used to construct them sufficiently satisfy the above requirements. In particular, internal losses were generally small.
内部損失が少ないと、ボイスコイルや振動板自体の不要
な振動が抑えられなく、このため共振が起こりやすく、
長く尾を引く減衰特性などにより固有音を発生し、音響
的に不具合を生じるという問題点があった。If internal loss is low, unnecessary vibrations of the voice coil and diaphragm themselves cannot be suppressed, and resonance is therefore likely to occur.
There was a problem in that the long-tailed attenuation characteristics generated unique sounds, causing acoustic problems.
このようなボイスコイルや振動板の不要振動による輻射
を抑えるために、内部損失の大きい材料をその表面に塗
布することも考えられるが、重量の増大に伴う他の弊害
や効果のバラツキによる品質の不安定さを招き本来の性
能を発揮できないという問題点が生じ、ボイスコイルの
位置する磁気ギャップの幅が０．５〜１ｍｍ程度と狭い
ため、それによる制約もあった。In order to suppress the radiation caused by such unnecessary vibrations of the voice coil and diaphragm, it is possible to coat the surface with a material that has a large internal loss, but this may cause other problems due to the increase in weight and the quality may deteriorate due to variations in effectiveness. There was a problem that this resulted in instability and the original performance could not be achieved, and there were also restrictions due to the narrow width of the magnetic gap in which the voice coil was located, about 0.5 to 1 mm.
この発明は上記のような問題点を解消するためになされ
たもので、内部損失の大きいボイスコイル用及び振動板
用素材をもった。性能が優れ作業性も従来と変わらない
高品質なスピーカーユニットを得ることを目的としてい
る。This invention was made in order to solve the above-mentioned problems, and uses materials for voice coils and diaphragms that have large internal losses. The aim is to obtain a high-quality speaker unit with excellent performance and workability that is no different from conventional products.
［課題を解決するための手段］
この発明に係るスピーカーユニットは、ボイスコイル巻
線や、それとボイスコイルボビン、又はボイスコイル巻
線とボイスコイルボビン・振動板一体成形品を構成する
材料として防振性アルミニウム合金を用いたものである
。[Means for Solving the Problems] The speaker unit according to the present invention uses vibration-proof aluminum as a material constituting the voice coil winding, the voice coil bobbin, or the voice coil winding and the voice coil bobbin/diaphragm integrally molded product. It uses an alloy.
［作 用］
この発明におけるスピーカーユニットは、ボイスコイル
巻線、ボイスコイルボビン、又はこれと振動板との一体
成形品を防振性アルミニウム合金よりなる材料で構成し
たので、その電気的性能は維持しながら音響エネルギー
の伝達損失が少なく、内部損失も大きく不要振動による
輻射が抑制され。[Function] In the speaker unit of the present invention, the voice coil winding, the voice coil bobbin, or an integrally molded product of the voice coil bobbin and the diaphragm are made of a material made of anti-vibration aluminum alloy, so that its electrical performance is maintained. However, transmission loss of acoustic energy is small, internal loss is large, and radiation due to unnecessary vibrations is suppressed.
音響性能が向上する。Improved acoustic performance.
さらに、ボイスコイルボビンと振動板との一体成形品は
、熱伝導度が大で、ボイスコイル巻線部で発生した熱が
効果的にボビン部振動板部を通して放散し、耐入力的に
も有利である。Furthermore, the integral molding of the voice coil bobbin and the diaphragm has high thermal conductivity, and the heat generated in the voice coil winding section is effectively dissipated through the bobbin section and the diaphragm section, which is advantageous in terms of resistance to input. be.
［実施例］
以下、この発明の一実施例を図について説明する。第１
図はこの発明の一実施例を示す一部断面側面図で、図に
おいて、（１）はボイスコイル巻線、（４）はボイスコ
イルボビンと振動板との一体成形品で、この一体成形品
（４）及びボイスコイル巻線（１）は共に防振性アルミ
ニウム合金（Ａｌ−Ｎｉ系合金又はＡｌ−Ｓｉ系合金）
により構成されている。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a partially sectional side view showing an embodiment of the present invention. In the figure, (1) is a voice coil winding, (4) is an integrally molded product of a voice coil bobbin and a diaphragm, and this integrally molded product ( 4) and the voice coil winding (1) are both made of anti-vibration aluminum alloy (Al-Ni alloy or Al-Si alloy)
It is made up of.
次にこの防振性アルミニウム合金の各組成例を示す。Next, examples of each composition of this anti-vibration aluminum alloy will be shown.
組成例Ｉ
Ｎｉ、−６％、Ｆｅ−０，０５％、Ｚｒ−０，０５％、
ＭＭ＄−０，１％、Ａｌ−残部。ここにＭＭ＊はミツシ
ュメタルで、その組成はＬａ−３５％、Ｃｅ −４３％
、Ｎ ａ −１５％、Ｐｒ−４％、Ｓｍ−１％、Ｙその
他２％である。Composition Example I Ni, -6%, Fe-0,05%, Zr-0,05%,
MM$-0.1%, Al-balance. Here, MM* is Mitsushi metal, whose composition is La-35%, Ce-43%
, Na -15%, Pr -4%, Sm -1%, Y and others 2%.
組成例２
Ｎ ｉ −６％、Ｆｓ−０，０５％、Ｚｒ−０，０５％
、ＭＭ＊−０，１％、５ｎ−０，０８％、ＡＩ−残部。Composition Example 2 Ni-6%, Fs-0.05%, Zr-0.05%
, MM*-0,1%, 5n-0,08%, AI-remainder.
組成例３
Ｓｉ−１０％、Ｆｅ−０，０５％、Ｚｒ−０，０５％、
ＭＭ＊−０，１％、Ｎａ−０，００２％、Ａｌ−残部。Composition Example 3 Si-10%, Fe-0.05%, Zr-0.05%,
MM* - 0,1%, Na - 0,002%, Al - balance.
組成例４
Ｓｉ−１０％、Ｆｅ−０，０５％、Ｚｒ−０，０５％、
ＭＭ＊−０，１％、５ｎ−０，０８％、Ａｌ−残部。Composition Example 4 Si-10%, Fe-0.05%, Zr-0.05%,
MM* - 0,1%, 5n - 0,08%, Al - balance.
組成例１及び２はＡｌ−Ｎｉ系合金、組成例３及び４は
Ａ Ｉ −Ｓ ｉ系合金である。Composition Examples 1 and 2 are Al-Ni alloys, and Composition Examples 3 and 4 are AI-Si alloys.
一般にアルミニウム合金の中で内部摩擦（減衰）を生ず
るメカニズムとして第２相粒マトリックスの境界、結晶
粒界及び粒界での粘性流動並びに転位、空孔及び積層欠
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。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す。In general, the mechanisms that cause internal friction (damping) in aluminum alloys include viscous flow at the boundaries of the second phase grain matrix, grain boundaries, and grain boundaries, and vibrations caused by micro defects in crystals such as dislocations, vacancies, and stacking faults. Energy absorption is considered. The damping ability Q-' indicates a measure of converting externally applied vibrational energy into thermal energy.
２π Ｅ
ここで、Ｅは振動の１サイクルの最初において振動系の
有する振動エネルギー、ΔＥは振動の１サイクル中に熱
エネルギーに変換する振動エネルギーである。2π E Here, E is the vibrational energy that the vibration system has at the beginning of one cycle of vibration, and ΔE is the vibrational energy that is converted into thermal energy during one cycle of vibration.
この実施例におけるＡｌ−Ｎｉ系合金は、アルミニウム
ＡＩ中にニッケルＮｉが添加されるので、マトリックス
であるＡｌ中にＮｉ粒子が析出され、共晶結晶が形成さ
れ、そしてこの第２相であるＮｉ粒子の界面によって振
動が吸収され、減衰能Ｑ−’が向上する。In the Al-Ni alloy in this example, since nickel Ni is added to aluminum AI, Ni particles are precipitated in the matrix Al, a eutectic crystal is formed, and this second phase Ni Vibration is absorbed by the particle interface, and the damping ability Q-' is improved.
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、Ｎａ、Ｓｒは、Ｎｉ粒子
を微細化する働きがある。又、上記組成例２のようにＳ
ｎを含有すると、これが結晶粒界に微細に析出され、粒
界の粘性が増大し減衰能Ｑ″′がさらに向上する。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 refining Ni particles. In addition, as in composition example 2 above, S
When n is contained, it is finely precipitated at the grain boundaries, increasing the viscosity of the grain boundaries and further improving the damping ability Q'''.
上記各組成例１及び２の重量百分率は単なる一例で、次
に示す範囲内であればよく、それより多くても少なくて
も以下の様な問題が生ずる。The weight percentages of each of Composition Examples 1 and 2 above are merely examples, and may be within the ranges shown below.If the weight percentages are greater or less than that, the following problems will occur.
［１］Ｎｉ４〜１０％、より好ましくは４．５〜８％で
、４％以下であると形成される粒子が少ないため充分な
減衰能が得られず、１０％以上であると粗大な粒子生成
のため減衰能が向上せず、機械的性質が劣化する。[1] Ni is 4 to 10%, more preferably 4.5 to 8%. If it is less than 4%, few particles will be formed and sufficient damping ability will not be obtained, and if it is more than 10%, coarse particles will be formed. Due to this generation, the damping capacity does not improve and the mechanical properties deteriorate.
［２］（ｉ）Ｆｅ、 Ｚ ｒ、 Ｖ及びＴｉからなる群
から選ばれた少なくとも１種の元素が合計で０．０５〜
０．８％、より好ましくは０．０６〜０．６％で、０．
０５以下であると結晶の微細化効果が充分でなく、０．
８％以上であると粗大な金属化合物が生成して減衰能及
び機械的性質が損なう。[2] (i) At least one element selected from the group consisting of Fe, Zr, V and Ti in a total amount of 0.05~
0.8%, more preferably 0.06-0.6%, 0.
If it is less than 0.05, the crystal refinement effect will not be sufficient;
If it is 8% or more, coarse metal compounds will be formed and the damping ability and mechanical properties will be impaired.
（ｉｉ）希土類元素の少なくとも１種が合計で０．０５
〜２％、より好ましくは０．０６〜１．５％で、０．０
５以下であると結晶の微細化効果が充分でなく、２％以
上であると粗大な金属化合物が生成して減衰能及び機械
的性質が損なう。(ii) At least one kind of rare earth element is 0.05 in total
~2%, more preferably 0.06-1.5%, 0.0
If it is less than 5, the crystal refinement effect will not be sufficient, and if it is more than 2%, coarse metal compounds will be formed, impairing damping ability and mechanical properties.
■Ｓｎが０．００５〜０．１％、より好ましくはｏ、ｏ
ｏ ｓ〜０．０８％で、０．００５％以下であると粒
界の粘性を増大させるのに充分でなく、０．１％以上で
あると、ミクロ偏析が増大し、減衰能が改善されないう
えに、機械的性質及び耐蝕性が劣化する。■Sn is 0.005 to 0.1%, more preferably o, o
o s~0.08%, if it is less than 0.005%, it is not sufficient to increase the viscosity of grain boundaries, and if it is more than 0.1%, micro-segregation increases and the damping ability is not improved. Moreover, mechanical properties and corrosion resistance deteriorate.
また、この実施例のＡｌ−Ｎｉ系合金においては、その
結晶組織について、第２相粒子（Ｎｉ粒子）の平均粒子
径が１０μＩ以下であることが必要であり、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。上記平均粒子径が７μ
ｍ以下であることがより好ましく、５μ園以下であるこ
とがさらに好ましい。In addition, in the Al-Ni alloy of this example, regarding its crystal structure, it is necessary that the average particle diameter of the second phase particles (Ni particles) is 10 μI or less, and by setting it to 10 μm or less, the second phase By increasing the interface between phase particles, a large damping capacity can be obtained. The above average particle diameter is 7μ
It is more preferable that it is below m, and even more preferably that it is below 5μ.
さらに、この実施例におけるＡｌ−Ｓｉ系合金は、アル
ミニウムＡｌ中にシリコンＳｉが添加されるので、マト
リックスであるＡｌ中にＳｉ粒子が析出され、共晶結晶
が形成され、そしてこの第２相であるＳｉ粒子の界面に
よって振動が吸収され、減衰能Ｑ−’が向上する。Furthermore, in the Al-Si alloy in this example, silicon Si is added to the aluminum Al, so Si particles are precipitated in the Al matrix, a eutectic crystal is formed, and this second phase Vibration is absorbed by the interface of a certain Si particle, and the damping ability Q-' is improved.
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、 Ｎａ、 Ｓｒは、Ｓｉ
粒子を微細化する働きがある。又、上記組成例４のよう
にＳｎを含有すると、これが結晶粒界に微細に析出され
、粒界の粘性が増大し減衰能Ｑ−’がさらに向上する。Fe, Zr, V, Ti, and rare earth elements have the function of refining crystals and increasing grain boundaries, while Na, Sr, and Si
It works to make particles finer. Further, when Sn is contained as in Composition Example 4 above, Sn is finely precipitated at the grain boundaries, increasing the viscosity of the grain boundaries and further improving the damping ability Q-'.
上記各組成例３及び４の重量百分率は単なる一例で、次
に示す範囲内であればよく、それより多くても少なくて
も以下の様な問題が生ずる。The weight percentages in each of Composition Examples 3 and 4 above are merely examples, and may be within the ranges shown below.If the weight percentages are greater or less than that, the following problems will occur.
［１］Ｓｉ８〜２０％、より好ましくは９〜１８％で、
８％以下であると形成される粒子が少ないため充分な減
衰能が得られず、２０％以上であると粗大な粒子生成の
ため減衰能が向上しない。[1] Si 8 to 20%, more preferably 9 to 18%,
If it is 8% or less, sufficient damping capacity cannot be obtained because few particles are formed, and if it is 20% or more, coarse particles are formed and the damping capacity cannot be improved.
［２］（ｉ）Ｆｅ、Ｚｒ、■及びＴｉからなる群から選
ばれた少なくとも１種の元素が合計で０．０５〜０．８
％、より好ましくは０．０６〜０．６％で、０．０５以
下であると結晶の微細化効果が充分でなく、０．８％以
上であると粗大な金属化合物が生成して減衰能及び機械
的性質が損なう。[2] (i) At least one element selected from the group consisting of Fe, Zr, ■, and Ti in total of 0.05 to 0.8
%, more preferably 0.06 to 0.6%; if it is less than 0.05, the crystal refinement effect will not be sufficient, and if it is more than 0.8%, coarse metal compounds will be formed and the damping ability will be reduced. and mechanical properties are impaired.
（ｉｉ）希土類元素の少なくとも１種が合計で０．０５
〜２％、より好ましくは０．０６〜１．５％で、０．０
５以下であると結晶の微細化効果が充分でなく、２％以
上であると粗大な金属化合物が生成して減衰能及び機械
的性質が損なう。(ii) At least one kind of rare earth element is 0.05 in total
~2%, more preferably 0.06-1.5%, 0.0
If it is less than 5, the crystal refinement effect will not be sufficient, and if it is more than 2%, coarse metal compounds will be formed, impairing damping ability and mechanical properties.
［３］Ｎａ及び又はＳｒを合計で０．１％以下、より好
ましくは０．０５％以下で、０．１％以上であると微細
化効果が認められなく鋳造性が損なわれる。[3] The total content of Na and/or Sr is 0.1% or less, more preferably 0.05% or less; if it is 0.1% or more, no refinement effect is observed and castability is impaired.
■Ｓｎが０．００５〜０．１％、より好ましくは０．０
０８〜０．０８％で、０．００５％以下であると粒界の
粘性を増大させるのに充分でなく、０．１％以上である
と、ミクロ偏析が増大し、減衰能が改善されないうえに
、機械的性質及び耐蝕性が劣化する。■Sn is 0.005 to 0.1%, more preferably 0.0
If it is less than 0.005%, it is not sufficient to increase the viscosity of grain boundaries, and if it is more than 0.1%, microsegregation increases and the damping ability is not improved. In addition, mechanical properties and corrosion resistance deteriorate.
また、この実施例のＡｌ−３ｉ系合金においては、その
結晶組織について、第２相粒子（Ｓｉ粒子）の平均粒子
径が１０μｍ以下であることが必要であり、１０μｍ以
下とすることによって第２相粒子の界面製増大させ、大
きい減衰能を得ることができる。上記平均粒子径が７μ
ｍ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, in the Al-3i alloy of this example, regarding its crystal structure, it is necessary that the average particle diameter of the second phase particles (Si particles) is 10 μm or less. By increasing the interface between the phase particles, a large damping capacity can be obtained. The above average particle diameter is 7μ
It is more preferable that it is less than m, and even more preferably that it is less than 5 μm.
次に下表にてこの発明の実施例のＡｌ−Ｎｉ系合金、Ａ
ｌ−３ｉ系合金及びＡ １ （９９，５％）の各特性を
比較して示す。Next, the table below shows Al-Ni alloys of Examples of this invention, A
The characteristics of the l-3i alloy and A 1 (99.5%) are compared and shown.
上記表からも明らかなように、熱伝導度は普通純度アル
ミにラムＡ ｌ （９９，５％）より優れ、減衰能Ｑ−
’は本発明のＡｌ−Ｓｉ系合金、Ａ ｌ −Ｎ ｉ系合
金ともに、Ａ ｌ （９９，５％）と比較して１桁大き
く、また、弾性率及び密度はほぼ同じ範囲であるので、
軽量剛性を落とすことなく、熱伝導度及び内部損失を従
来構成より、著しく向上させることができ、ボイスコイ
ル巻線及びボビン及び振動板の材料として、きわめて良
好であることがわかる。As is clear from the above table, the thermal conductivity is superior to ordinary purity aluminum (99.5%), and the damping capacity Q-
' is one order of magnitude larger than Al (99.5%) for both the Al-Si alloy and Al-Ni alloy of the present invention, and the elastic modulus and density are approximately in the same range, so
It can be seen that the thermal conductivity and internal loss can be significantly improved over the conventional structure without reducing the weight and rigidity, and that it is extremely suitable as a material for voice coil windings, bobbins, and diaphragms.
なお、上記実施例ではボイスコイル巻線（１）の素材と
してＡｌ−Ｓｉ系合金又はＡ １− Ｎ ｉ系合金の単
体の例を示したが、各々の線材の外周を銅の被膜で覆っ
た構造とすれば、半田付けがさらに容易となる。In addition, in the above example, the voice coil winding wire (1) is made of a single Al-Si alloy or A1-Ni alloy as the material, but the outer periphery of each wire was covered with a copper coating. This structure makes soldering even easier.
また、第１図の実施例では一体成形品（４）の振動板部
がドーム形の例を示したが、第２図に示したようにコー
ン形でもよく同様の効果を得ることができる。Further, in the embodiment shown in FIG. 1, the diaphragm portion of the integrally molded product (4) is dome-shaped, but as shown in FIG. 2, it may be cone-shaped and the same effect can be obtained.
［発明の効果］
以上のように、この発明によればボイスコイル巻線、ボ
イスコイルボビン及びボイスコイルボビンと一体成形し
てなる振動板の材料として防振性アルミニウム合金を用
いたので、軽量で剛性が高く高熱伝導度で、さらに防振
効果を大にすることができ、不要輻射の少ない品質の高
いスピーカーユニットが従来同様の作業性の良好な工程
で安価に得られる効果がある。[Effects of the Invention] As described above, according to the present invention, since a vibration-proof aluminum alloy is used as the material of the voice coil winding, the voice coil bobbin, and the diaphragm formed integrally with the voice coil bobbin, it is lightweight and rigid. It has a high thermal conductivity, can further increase the vibration isolation effect, and has the effect of producing a high-quality speaker unit with little unnecessary radiation at a low cost using the same process as conventional methods with good workability.
第１図はこの発明の一実施例を示す一部断面側面図、第
２図はこの発明の他の実施例を示す一部断面側面図、第
３図は従来のスピーカーユニットのボイスコイル及び振
動板を示す一部断面側面図である。
図において、（１）はボイスコイル巻線、（２）はボイ
スコイルボビン、（３）は振動板、（４）はボイスコイ
ルボビン・振動板一体成形品である。
図中同一符号は同一あるいは相当部分を示す。
第 １ 図
第 ２ 図
第 ３ 図Fig. 1 is a partially sectional side view showing one embodiment of the present invention, Fig. 2 is a partially sectional side view showing another embodiment of the invention, and Fig. 3 is a voice coil and vibration of a conventional speaker unit. It is a partial cross-sectional side view which shows a board. In the figure, (1) is a voice coil winding, (2) is a voice coil bobbin, (3) is a diaphragm, and (4) is an integrally molded product of the voice coil bobbin and diaphragm. The same reference numerals in the figures indicate the same or corresponding parts. Figure 1 Figure 2 Figure 3
Claims (8)
と、このボイスコイルボビンにより駆動される振動板と
を備えたスピーカーユニットにおいて、上記ボイスコイ
ル巻線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スピーカーユニット。(1) In a speaker unit including a voice coil bobbin around which a voice coil winding is wound and a diaphragm driven by the voice coil bobbin, a vibration-proof aluminum alloy is used as a material constituting the voice coil winding. A speaker unit characterized by:
と、このボイスコイルボビンにより駆動される振動板と
を備えたスピーカーユニットにおいて、上記ボイスコイ
ル巻線及びボイスコイルボビン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スピー
カーユニット。(2) In a speaker unit including a voice coil bobbin around which a voice coil winding is wound and a diaphragm driven by the voice coil bobbin, a vibration-proof aluminum alloy is used as a material constituting the voice coil winding and the voice coil bobbin. A speaker unit characterized by using.
と、このボイスコイルボビンにより駆動される振動板と
を備えたスピーカーユニットにおいて、上記ボイスコイ
ルボビンと振動板とを一体成形するとともに、この一体
成形品及び上記ボイスコイル巻線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スピ
ーカーユニット。(3) In a speaker unit including a voice coil bobbin wound with a voice coil winding and a diaphragm driven by the voice coil bobbin, the voice coil bobbin and the diaphragm are integrally molded, and the integrally molded product and A speaker unit characterized in that a vibration-proof aluminum alloy is used as a material constituting the voice coil winding.
で ［１］Ｎｉ４〜１０％ ［２］（ｉ）Ｆｅ、Ｚｒ、Ｖ及びＴｉからなる群から選
ばれた少なくとも１種の元素を合計で０．０５〜０．８
％、及び又は （ｉｉ）希土類元素の少なくとも１種を合計で０．０５
〜２％ を含み、残部がアルミニウム及び不純物からなり、上記
Ｎｉ粒子の平均粒子径が１０μｍ以下であるＡｌ−Ｎｉ
系合金を用いたことを特徴とする特許請求の範囲第１項
、第２項或は第３項の何れかに記載のスピーカーユニッ
ト。(4) The above-mentioned anti-vibration aluminum alloy contains a total of 0% of at least one element selected from the group consisting of [1] Ni4 to 10% [2] (i) Fe, Zr, V, and Ti. .05-0.8
%, and or (ii) at least one rare earth element in total of 0.05
~2%, the remainder consists of aluminum and impurities, and the average particle diameter of the Ni particles is 10 μm or less
A speaker unit according to any one of claims 1, 2, and 3, characterized in that the speaker unit uses a base alloy.
で ［１］Ｎｉ４〜１０％ ［２］（ｉ）Ｆｅ、Ｚｒ、Ｖ及びＴｉからなる群から選
ばれた少なくとも１種の元素を合計で０．０５〜０．８
％、及び又は （ｉｉ）希土類元素の少なくとも１種を合計で０．０５
〜２％ ［３］Ｓｎを０．００５〜０．１％ を含み、残部がアルミニウム及び不純物からなり、上記
Ｎｉ粒子の平均粒子径が１０μｍ以下であるＡｌ−Ｎｉ
系合金を用いたことを特徴とする特許請求の範囲第１項
、第２項或は第３項の何れかに記載のスピーカーユニッ
ト。(5) The above-mentioned anti-vibration aluminum alloy contains a total of 0% of at least one element selected from the group consisting of [1] Ni4 to 10% [2] (i) Fe, Zr, V, and Ti. .05-0.8
%, and or (ii) at least one rare earth element in total of 0.05
~2% [3] Al-Ni containing 0.005~0.1% Sn, the balance consisting of aluminum and impurities, and the average particle size of the Ni particles is 10 μm or less
A speaker unit according to any one of claims 1, 2, and 3, characterized in that the speaker unit uses a base alloy.
で ［１］Ｓｉ８〜２０％ ［２］（ｉ）Ｆｅ、Ｚｒ、Ｖ及びＴｉからなる群から選
ばれた少なくとも１種の元素を合計で０．０５〜０．８
％、及び又は （ｉｉ）希土類元素の少なくとも１種を合計で０．０５
〜２％ ［３］Ｎａ及び又はＳｒを合計で０．１％以下を含み、
残部がアルミニウム及び不純物からなり、上記Ｓｉ粒子
の平均粒子径が１０μｍ以下であるＡｌ−Ｓｉ系合金を
用いたことを特徴とする特許請求の範囲第１項、第２項
或は第３項の何れかに記載のスピーカーユニット。(6) The above-mentioned anti-vibration aluminum alloy contains a total of 0% of at least one element selected from the group consisting of [1] Si8-20% [2] (i) Fe, Zr, V and Ti. .05-0.8
%, and or (ii) at least one rare earth element in total of 0.05
~2% [3] Contains 0.1% or less of Na and or Sr in total,
Claims 1, 2, or 3, characterized in that the remainder consists of aluminum and impurities, and the Si particles have an average particle size of 10 μm or less. The speaker unit described in any of the above.
で ［１］Ｓｉ８〜２０％ ［２］（ｉ）Ｆｅ、Ｚｒ、Ｖ及びＴｉからなる群から選
ばれた少なくとも１種の元素を合計で０．０５〜０．８
％、及び又は （ｉｉ）希土類元素の少なくとも１種を合計で０．０５
〜２％ ［３］Ｎａ及び又はＳｒを合計で０．１％以下［４］Ｓ
ｎを０．００５〜０．１％ を含み、残部がアルミニウム及び不純物からなり、上記
Ｓｉ粒子の平均粒子径が１０μｍ以下であるＡｌ−Ｓｉ
系合金を用いたことを特徴とする特許請求の範囲第１項
、第２項或は第３項の何れかに記載のスピーカーユニッ
ト。(7) The above-mentioned anti-vibration aluminum alloy contains a total of 0% of at least one element selected from the group consisting of [1] Si8 to 20% [2] (i) Fe, Zr, V and Ti. .05-0.8
%, and or (ii) at least one rare earth element in total of 0.05
~2% [3] Na and/or Sr total 0.1% or less [4] S
Al-Si containing 0.005 to 0.1% n, the remainder consisting of aluminum and impurities, and the average particle diameter of the Si particles is 10 μm or less
A speaker unit according to any one of claims 1, 2, and 3, characterized in that the speaker unit uses a base alloy.
の外周を銅の被膜で覆ったことを特徴とする特許請求の
範囲第１項、第２項或は第３項の何れかに記載のスピー
カーユニット。(8) The voice coil winding made of the anti-vibration aluminum alloy is covered with a copper coating on the outer periphery thereof. speaker unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2138350A JPH0433500A (en) | 1990-05-30 | 1990-05-30 | Speaker unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2138350A JPH0433500A (en) | 1990-05-30 | 1990-05-30 | Speaker unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433500A true JPH0433500A (en) | 1992-02-04 |
Family
ID=15219877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2138350A Pending JPH0433500A (en) | 1990-05-30 | 1990-05-30 | Speaker unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0792569A1 (en) * | 1994-11-14 | 1997-09-03 | Jbl Incorporated | Low tcr wire in high power audio coils |
| JP2007235467A (en) * | 2006-02-28 | 2007-09-13 | Onkyo Corp | Voice coil bobbin and voice coil using the same, and loudspeaker |
| KR20150049998A (en) | 2013-10-31 | 2015-05-08 | 주식회사다스 | Car seat with active anti-submarine function |
-
1990
- 1990-05-30 JP JP2138350A patent/JPH0433500A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0792569A1 (en) * | 1994-11-14 | 1997-09-03 | Jbl Incorporated | Low tcr wire in high power audio coils |
| JP2007235467A (en) * | 2006-02-28 | 2007-09-13 | Onkyo Corp | Voice coil bobbin and voice coil using the same, and loudspeaker |
| KR20150049998A (en) | 2013-10-31 | 2015-05-08 | 주식회사다스 | Car seat with active anti-submarine function |
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