JPH02233100A - Material for speaker frame - Google Patents
Material for speaker frameInfo
- Publication number
- JPH02233100A JPH02233100A JP5405389A JP5405389A JPH02233100A JP H02233100 A JPH02233100 A JP H02233100A JP 5405389 A JP5405389 A JP 5405389A JP 5405389 A JP5405389 A JP 5405389A JP H02233100 A JPH02233100 A JP H02233100A
- Authority
- JP
- Japan
- Prior art keywords
- whisker
- resin
- speaker
- whose
- specific weight
- 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 title claims description 34
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 7
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 abstract description 16
- 239000011347 resin Substances 0.000 abstract description 16
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 abstract description 3
- 241001455273 Tetrapoda Species 0.000 abstract description 2
- 239000008188 pellet Substances 0.000 abstract description 2
- 239000012779 reinforcing material Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- 241000824268 Kuma Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は音響出力機器等に用いるスピーカフレーム用材
料に関するものである．
従来の技術
近年、テレビ，ステレオ，ラジカセ等の音響出力機器に
おいては、スピーカ及びスピーカシステムの音響特性に
対しては、従来よりもさらに優れた出力音圧．歪率，平
坦性が望まれており、またテレビ等の映像用に用いるス
ビーカ及びスビーカシステムにおいては、磁気の低漏洩
化も同時に求められており、音響特性及び磁気特性を左
右する、ます重要視されている．
以下に従来のスピーカフレームについて説明する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a material for speaker frames used in audio output equipment and the like. 2. Description of the Related Art In recent years, sound output devices such as televisions, stereos, radio-cassette players, etc. have been designed to have even better output sound pressure than before for the acoustic characteristics of speakers and speaker systems. Distortion rate and flatness are desired, and low magnetic leakage is also required for sbeekers and sbeeker systems used for video on TVs, etc., which is an increasingly important factor that affects acoustic and magnetic properties. It is being looked at. A conventional speaker frame will be explained below.
従来スピーカフレーム用材料として、鉄板，アルミダイ
キャスト等が用いられてきた．しかしながら、これらの
材料を用いてスピーカを構成すると、鉄板では、磁気漏
洩が太き《なり、また外観的にも高級感に欠ける。また
アルミダイキャストでは、磁気漏洩や外観では優れてい
ても、非常に高価になるという欠点を持ち、近年この問
題点を解決する目的で、熱可塑性の合成樹脂を材料とし
、これを射出成形等の方法でスピーカフレームの形状に
成形し用いることが多くなってきている．
発明が解決しようとする課題
しかしながら、これらの材料を用いたスピーカフレーム
は、素材の曲げ弾性率が低く、このため成形物の剛性が
低く、また比重も低いため、スピーカを一定のパワーで
駆動したときスピーカ振動板と共振し、フレーム変形し
、スピーカの音圧一周波数特性において山谷が生じたり
、歪率が増加し、音質が劣化するといった悪影響を及ぼ
すという問題点を有していた。Traditionally, materials such as steel plates and die-cast aluminum have been used for speaker frames. However, when a speaker is constructed using these materials, magnetic leakage becomes large if the iron plate is used, and the appearance also lacks a luxurious appearance. In addition, although aluminum die casting has excellent magnetic leakage and appearance, it has the drawback of being extremely expensive. It is becoming increasingly common to use this method to form the shape of a speaker frame. Problems to be Solved by the Invention However, speaker frames using these materials have a low bending modulus of elasticity, which results in low rigidity and low specific gravity of the molded material, making it difficult to drive the speaker with a constant power. When this happens, it resonates with the speaker diaphragm, deforms the frame, causes peaks and valleys in the speaker's sound pressure-frequency characteristics, increases distortion rate, and deteriorates sound quality.
このため、従来これらの樹脂材と各種強化材の複合化が
行われているが、例えばガラス繊維を代表とする繊維状
の強化材では成形時に樹脂の流動方向に配向するため、
成形物の強度に方向性を生じて樹脂材料への補強効果力
Ｃ限定されたり、また粒状の補強材では剛性は上がって
も脆性を生じるといった問題点も有していた。For this reason, conventional composites of these resin materials and various reinforcing materials have been carried out, but for example, fibrous reinforcing materials such as glass fiber are oriented in the flow direction of the resin during molding.
There are also problems in that the strength of the molded product is directional, which limits the reinforcing effect C on the resin material, and that granular reinforcing materials are brittle even though they have increased rigidity.
さらにこれらの補強材は比重もそれほど高《なく、複合
化によって樹脂材料の比重を大きく上昇させることはで
きなかった。Furthermore, the specific gravity of these reinforcing materials is not so high, and it has not been possible to significantly increase the specific gravity of the resin material by compositing.
本発明は上記従来の問題点を解決するもので、磁気特性
や外観が優れ、その成形物の剛性及び比重の高いスピー
カフレーム用材料を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and aims to provide a speaker frame material that has excellent magnetic properties and appearance, and has a molded product having high rigidity and specific gravity.
課題を解決するための手段
この目的を達成するために、本発明のスピーカフレーム
用材料は、熱可塑性、あるいは熱硬化性の合成樹脂と中
心から異なる４方向へ結晶が成長した、酸化亜鉛よりな
る弾性率の高いウィスカ一を混合した構成を有している
。Means for Solving the Problems In order to achieve this object, the speaker frame material of the present invention is made of thermoplastic or thermosetting synthetic resin and zinc oxide in which crystals have grown in four different directions from the center. It has a structure in which whiskers with a high modulus of elasticity are mixed.
作用
この構成によって、本発明によるスピーカフレーム用材
料は、非常に弾性率が大きく、これを用いて成形した成
形物は従来の樹脂成形物と比較した場合、肉厚一定の条
件では、非常に曲げ剛性が増大するものであり、また比
重も大きいため、これを用いて成形したスピーカフレー
ムは、スビーカの動作中に変形したり共振を生じないた
め、スピ一カの音圧一周波数特性が平坦になりかつ歪が
低減する効果を存するものである．
また、熱可ワ性、あるいは熱硬化性の合成樹脂を基材と
し、これに上述の中心から異なる４方向へ結晶が成長し
た、酸化亜鉛よりなる弾性率の高いウィスカーを混合し
た材料を用いているため、熱可塑性、あるいは熱硬化性
の樹脂とウィスカ一との絡み合いが良好で、従来の針状
ウィスカーや繊維状の強化材と比べて弾性率を太き《す
ることができると同時に強靭性を確保することができ、
脆性が向上することがない。Due to this structure, the speaker frame material according to the present invention has a very high elastic modulus, and when compared with conventional resin moldings, the material for speaker frames according to the present invention has a very high elasticity when the wall thickness is constant. Since the rigidity is increased and the specific gravity is also large, a speaker frame molded using this material will not deform or resonate during the operation of the speaker, so the sound pressure-frequency characteristics of the speaker will be flat. This has the effect of reducing distortion. In addition, we use a material that uses thermofusible or thermosetting synthetic resin as a base material, and mixes whiskers with high elastic modulus made of zinc oxide, in which crystals grow in four different directions from the center mentioned above. As a result, the thermoplastic or thermosetting resin and the whisker are well intertwined, and compared to conventional needle-shaped whiskers or fibrous reinforcing materials, the elastic modulus can be made thicker, and at the same time, it has strong toughness. can be ensured,
No improvement in brittleness.
また、このスピーカフレーム用材料は、熱可塑性、ある
いは熱硬化性の合成樹脂と中心から異なる４方向へ結晶
が成長した、酸化亜鉛よりなる弾性率の高いウィスカ一
を混合した材料を用いているため、射出成形等の方法で
成形した場合、従来の針状ウィスカーや繊維状の強化材
のように、成形時の樹脂の流れによって強化材が配向し
て材料の強度に方向性が現れ、一定方向の強度が極端に
弱くなるような現象が起こらず、あらゆる方向に対して
均等に優れた強度を示す。さらに、このスピーカフレー
ム用材料は、合成樹脂とウィスカーのなじみがよいため
、従来の各種補強材料を添加した成形材料以上に良好な
成形性を示し、複雑な形状も成形が可能であると同時に
非常に量産性に優れている．
実施例
以下、本発明の一実施例について図面を用いて詳細に説
明する．
（実施例１）
ウィスカーは酸化亜鉛ウィスカー、分子式・・・・・・
ＺｎＯ，比重・・・・・・５．７で、中心から異なる４
方向へ結晶が成長した、いわゆるテトラポット形状で結
晶サイズは約１００μｍである。マトリックス樹脂とし
てＡＢＳ樹脂を用い、ウィスカーの含有率は０〜７０ｗ
Ｌ％とし、プリコンパウンド方式で、あらかじめ樹脂と
ウィスカーをλル練してペレットを形成した後、射出成
形により一定の形状に成形して試料を作成した。In addition, this speaker frame material uses a mixture of thermoplastic or thermosetting synthetic resin and whiskers with a high elastic modulus made of zinc oxide, in which crystals grow in four different directions from the center. When molded using a method such as injection molding, the reinforcing material is oriented by the flow of resin during molding, and the strength of the material becomes directional, like conventional needle whiskers or fibrous reinforcing materials. There is no phenomenon in which the strength becomes extremely weak, and the strength is equally excellent in all directions. In addition, this material for speaker frames has good compatibility between the synthetic resin and the whiskers, so it exhibits better moldability than conventional molding materials containing various reinforcing materials, and is capable of molding complex shapes. It is excellent in mass production. EXAMPLE Hereinafter, an example of the present invention will be explained in detail with reference to the drawings. (Example 1) Whiskers are zinc oxide whiskers, molecular formula...
ZnO, specific gravity...5.7, 4 different from the center
It has a so-called tetrapod shape in which crystals grow in different directions, and the crystal size is about 100 μm. ABS resin is used as the matrix resin, and the whisker content is 0 to 70w.
L%, resin and whiskers were kneaded in advance using a pre-compounding method to form pellets, and then molded into a certain shape by injection molding to prepare samples.
第１図にウィスカ一の含有率と作成した拭料の曲げ弾性
率との関係を示す．
（実施例２）
ウィスカーは、実施例ｌと同じ酸化亜鉛ウィスカーを用
いた．結晶サイズも同一である．マトリックス樹脂とし
て、エポキシ樹脂を用い、ポリアミン系硬化材により硬
化した．エポキシ樹脂にはビスフェノール型のエピコー
ト８２８を用い、硬化材としてトリエチレンテトラミン
を用いた．ウィス力一の含有率はＯ〜７ Ｑｗｔ％とし
、エビコート８２８と十分に混練したのちトリエチレン
テトラミンをエピコート８２８、１００重量部に対し１
２重量部の割合で加え、十分に混練したのち、注型法に
より所定の形状に成形して試料を作成した．
第２図にウィスカーの含有率と作成した試料の曲げ弾性
率との関係を示す。Figure 1 shows the relationship between whisker content and the flexural modulus of the prepared wipe. (Example 2) The same zinc oxide whiskers as in Example 1 were used as whiskers. The crystal size is also the same. Epoxy resin was used as the matrix resin, and it was cured with a polyamine-based curing agent. Bisphenol type Epicote 828 was used as the epoxy resin, and triethylenetetramine was used as the curing agent. The content of Wiss was 0 to 7 Qwt%, and after thorough kneading with Ebikoat 828, 1% triethylenetetramine was added to 100 parts by weight of Epicoat 828.
After adding 2 parts by weight and thoroughly kneading, a sample was prepared by molding into a predetermined shape using a casting method. FIG. 2 shows the relationship between the whisker content and the flexural modulus of the prepared sample.
第１図，第２図からも明らかなように、ウイスカ一の含
有率が増大するにつれて素材の曲げ弾性率が増大してい
る．曲げ弾性率はスピーカフレーム材料としての評価を
示す重要な物性値であり、この値が小さいとフレームに
異常音が発生したり、スピーカの音圧一周波数特性にお
いて山谷が生じたり、歪率が増大する．
従来のスピーカフレーム用材料との比較，ウイスカ一含
脊の効果の比較として実施例１，実施例２における素材
物性の値を第１表に示す。As is clear from Figures 1 and 2, as the content of whiskers increases, the flexural modulus of the material increases. Bending elastic modulus is an important physical property value that indicates the evaluation of a speaker frame material.If this value is small, abnormal noise may occur in the frame, peaks and valleys may occur in the sound pressure-frequency characteristics of the speaker, and the distortion rate may increase. do. Table 1 shows the values of the physical properties of the materials in Examples 1 and 2 as a comparison with conventional speaker frame materials and the effects of whiskers and spines.
（以 下 余 白）
（第１表）
第３図には実施例工よりなる素材のうち、ウィスカ−３
０ｗｔ％の素材を用いてスピーカフレームを射出成形に
よって作成し、このスピーカフレームを用いて組立てた
口径１２ｃｍのスビーカを一定の入力で駆動した場合の
スピーカフレームのアーム部分における振動の加速度の
周波数特性を示す。(Left below) (Table 1) Figure 3 shows whisker 3 of the materials used in the example construction.
A speaker frame is created by injection molding using a 0wt% material, and a speaker frame with a diameter of 12 cm assembled using this speaker frame is driven with a constant input, and the frequency characteristics of the vibration acceleration in the arm portion of the speaker frame are calculated. show.
比較のために、マトリノクス樹脂のみでウイスカー未添
加の樹脂素材及び、従来用いられているガラス繊維で強
化された樹脂素材で成形された同型のスピーカフレーム
を用いて組立てたスビーカの特性も同様に示す。ガラス
繊維はウィスカ一と同様にマトリックス樹脂のＡＢＳ樹
脂に３０ｗ ｔχ混合して用いた。For comparison, we also show the characteristics of a speaker frame assembled using a resin material made of only matrinox resin with no whiskers added, and a speaker frame of the same type molded from a conventionally used resin material reinforced with glass fiber. . The glass fiber was mixed with ABS resin as a matrix resin in an amount of 30 wtχ, as in the case of Whisker 1.
このように、本実施例によるスピーカフレームはウィス
カ一が含有されると特に３〜６Ｋｌ｛ｚにおける振動の
加速度が小さく、あまり振動していないため、スピーカ
フレーム材料として最通な材料である。また、同じ重量
比で混合したガラス繊維と比較して効果が大きいことも
わかる．発明の効果
以上のように本発明は、熱可塑性あるいは熱硬化性の合
成樹脂と、中心から異なる４方向へ結晶が成長した酸化
亜鉛よりなるウィスカ一を混合した素材をスピーカフレ
ーム用材料として用いたもので、本発明による材料によ
れば、曲げ弾性率が大きいため、異常音が発生せず、さ
らにスピーカの音圧一周波数特性が平坦になり、歪率が
低減するスピーカフレームを実現できるものである。As described above, when the speaker frame according to this embodiment contains whiskers, the acceleration of vibration is small especially at 3 to 6 Kl{z, and the vibration does not occur much. Therefore, the speaker frame is a suitable material for the speaker frame. It can also be seen that the effect is greater than that of glass fibers mixed at the same weight ratio. Effects of the Invention As described above, the present invention uses a material made of a mixture of thermoplastic or thermosetting synthetic resin and whiskers made of zinc oxide with crystals grown in four different directions from the center as a material for a speaker frame. According to the material according to the present invention, since the bending elastic modulus is large, it is possible to realize a speaker frame that does not generate abnormal noise, flattens the sound pressure-frequency characteristics of the speaker, and reduces the distortion rate. be.
第１図，第２図はそれぞれ本発明のスピーカ用フレーム
に使用する素材の、ウィスカ一の添加量と添加量と曲げ
弾性率の関係図、第３図は本発明の素材の一使用例にお
けるスピーカ用フレームの効果を示す振動の加速度の周
波数特性を示す特性図である。
代理人の氏名 弁理士 粟野重孝 はかｌ名第
図
ウ４スカ一舎有量（ｗｔ ｌ／。ク
マ回，７スａヤ脂ｊＡ３δ
第
図
ウィスカー．＠−有ｉ
（ｗｔ５ノ
マ回リク又樹脂：１ｌズＸソFigures 1 and 2 are diagrams showing the relationship between the amount of whiskers added and the flexural modulus of the material used in the speaker frame of the present invention, respectively, and Figure 3 is a diagram of the relationship between the amount of whisker added and the bending elastic modulus of the material used in the speaker frame of the present invention. It is a characteristic diagram which shows the frequency characteristic of the acceleration of vibration which shows the effect of the frame for speakers. Name of agent: Patent attorney Shigetaka Awano (wtl/.Kuma times, 7saya fat jA3δ Fig. whiskers.@-yi (wt5 times) :1l's x so
Claims (1)
なる４方向へ結晶が成長した酸化亜鉛よりなるウィスカ
ーを混合してなるスピーカフレーム用材料。A speaker frame material made of a mixture of thermoplastic or thermosetting synthetic resin and whiskers made of zinc oxide with crystals grown in four different directions from the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405389A JPH0710119B2 (en) | 1989-03-07 | 1989-03-07 | Material for speaker frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405389A JPH0710119B2 (en) | 1989-03-07 | 1989-03-07 | Material for speaker frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02233100A true JPH02233100A (en) | 1990-09-14 |
| JPH0710119B2 JPH0710119B2 (en) | 1995-02-01 |
Family
ID=12959872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5405389A Expired - Fee Related JPH0710119B2 (en) | 1989-03-07 | 1989-03-07 | Material for speaker frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710119B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06205498A (en) * | 1992-12-04 | 1994-07-22 | Calp Corp | Speaker frame |
| CN1043919C (en) * | 1994-06-03 | 1999-06-30 | 北京科技大学 | Catalytic conversion method for purifying explosive smoke of well |
-
1989
- 1989-03-07 JP JP5405389A patent/JPH0710119B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06205498A (en) * | 1992-12-04 | 1994-07-22 | Calp Corp | Speaker frame |
| CN1043919C (en) * | 1994-06-03 | 1999-06-30 | 北京科技大学 | Catalytic conversion method for purifying explosive smoke of well |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0710119B2 (en) | 1995-02-01 |
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