JPS5912230B2 - Speaker non-vibration system components - Google Patents
Speaker non-vibration system componentsInfo
- Publication number
- JPS5912230B2 JPS5912230B2 JP55040269A JP4026980A JPS5912230B2 JP S5912230 B2 JPS5912230 B2 JP S5912230B2 JP 55040269 A JP55040269 A JP 55040269A JP 4026980 A JP4026980 A JP 4026980A JP S5912230 B2 JPS5912230 B2 JP S5912230B2
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- graphite powder
- vibration system
- flaky graphite
- polypropylene
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
【発明の詳細な説明】
本発明は、スピーカフレーム、ホーン、イコラ２５ イ
ザ、音響レンズ、グリル等のスピーカシステムにおける
非振動系構成体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-vibration system component in a speaker system such as a speaker frame, a horn, an equalizer, an acoustic lens, and a grill.
フレームは磁気回路に固定され振動板の開口側を支持す
ると共にキャビネットにスピーカを取付けるためのもの
であるから、フレームの特性とし３０て望まれることは
、剛性が大きいこと、内部損失が大きく振動板の振動に
も共振し難いことである。The frame is fixed to the magnetic circuit and supports the opening side of the diaphragm, and is also used to attach the speaker to the cabinet.The desired characteristics of the frame are high rigidity, high internal loss, and the diaphragm. It is also difficult to resonate with the vibrations of the
またスピーカホーンの特性として望まれることも同様に
、剛性が大きいこと、内部損失が大きいこと、さらには
共振周波数が低いことである。さら３５に、音響レンズ
、イコライザ、グリル等のスピーカの非振動系構成体に
あつても高剛性、高内部損失という特性は不可欠のもの
である。かかることに着目し、本発明者らは従来の金属
、ブラスチツクに代わる素材を用いたスピーカの非振動
系構成体構成体について、特開昭５６−６０１９６号（
スピーカ用フレーム）、特開昭５６−５９３００号（音
響レンズ）、特開昭５６−６０１９３号（イコライザ）
、特開昭５６−６０１９２号（スピーカホーン）のそれ
ぞれの出願をし、これらのスピーカの非振動系構成体の
優れた特長を示した。しかしながら、これらの素材のス
ピーカの非振動系構成体は、耐温度特性で問題があシ、
カーステレオのような室内が高温度になる可能性のある
ところでは変形の虞れがあつた。本発明は、かかる従来
の問題に鑑みてなされたものであり１高剛性、高内部＋
ｑ失であると共に耐高温度特性である特長を有し、特に
カーステレオ用スピーカの構成に適するスピーカの非振
動系構成体を提供することを目的とする。Similarly, desirable characteristics of a speaker horn are high rigidity, high internal loss, and low resonant frequency. Furthermore, characteristics such as high rigidity and high internal loss are essential even for non-vibrating components of speakers such as acoustic lenses, equalizers, and grills. Focusing on this, the present inventors have proposed a non-vibration system structure for a speaker using a material that replaces conventional metals and plastics, as disclosed in Japanese Patent Application Laid-open No. 56-60196 (
speaker frame), JP-A-56-59300 (acoustic lens), JP-A-56-60193 (equalizer)
and JP-A-56-60192 (speaker horn), and demonstrated the excellent features of the non-vibrating structure of these speakers. However, the non-vibrating components of speakers made of these materials have problems with temperature resistance.
There was a risk of deformation in places such as car stereos where the indoor temperature could reach high temperatures. The present invention has been made in view of such conventional problems, and has 1 high rigidity, high internal +
It is an object of the present invention to provide a non-vibration system structure for a speaker, which has the features of q loss and high temperature resistance, and is particularly suitable for the structure of a car stereo speaker.
本発明を以下に詳細に説明する。The present invention will be explained in detail below.
本発明の特徴とするところは、ポリプロピレン単味、又
はポリプロピレンとポリメチルメタクリレートとの混合
物、必要ならばこれらの合成樹脂にニトリルブタジエン
ゴム（ＮＢＲ）、ブチルゴム（ＩＩＲ）、スチレンブタ
ジエンゴム（ＳＢＲ）等のゴム系材料を混入した混合材
料と鱗片状黒鉛粉末との混練物で形成されたスピーカの
非振動系構成体にある。The present invention is characterized by polypropylene alone, or a mixture of polypropylene and polymethyl methacrylate, and if necessary, nitrile butadiene rubber (NBR), butyl rubber (IIR), styrene butadiene rubber (SBR), etc., in addition to these synthetic resins. The non-vibration system component of a speaker is formed of a mixture of a mixed material containing a rubber-based material and flaky graphite powder.
また本発明は上記混練物で形成され、さらに鱗片状黒鉛
粉末が表面に沿つて配向されているスピーカの非振動系
構成体を特徴とする。弾性率が半減する温度で耐熱性を
論じるとき、ポリプロピレンは、耐熱性において塩化ビ
ニル樹脂より約２５℃高く、またポリメチルメタグレー
ド（ＰＭＭＡ）も塩化ビニル樹脂に比して１０℃近く高
いものである。従つてこれらの合成樹脂は塩化ピニル樹
脂ベースの成形材料よ）耐熱性を向上させる。ゴム系材
料はその軟質性により内部損失の向上に寄与する。鱗片
状黒鉛粉末は、樹脂単体では期待しえない弾性率の向上
に寄与し、特にその配向を一方向に揃えた場合には弾性
率は格段に向上する。鱗片状黒鉛粉末は、平均粒径が約
２０μｍ以下のものが良く、特に５μｍ以下のものが適
している。Further, the present invention is characterized by a non-vibration system structure for a speaker formed of the above-mentioned kneaded material and further having flaky graphite powder oriented along the surface. When discussing heat resistance at the temperature at which the elastic modulus is halved, polypropylene has a heat resistance that is approximately 25°C higher than that of vinyl chloride resin, and polymethyl metagrade (PMMA) has a heat resistance that is nearly 10°C higher than that of vinyl chloride resin. be. Therefore, these synthetic resins improve heat resistance (compared to molding materials based on pinyl chloride resin). Rubber-based materials contribute to improving internal loss due to their softness. The flaky graphite powder contributes to an improvement in the elastic modulus that cannot be expected from a resin alone, and especially when its orientation is aligned in one direction, the elastic modulus is significantly improved. The flaky graphite powder preferably has an average particle size of about 20 μm or less, particularly 5 μm or less.
またこの黒鉛粉末と樹脂との配合比は、黒鉛粉末１０〜
９０ｗｔ（Ｆ６ｓ樹脂９０〜１０ｗｔ％の範囲であれば
黒鉛粉末による弾性率の向上が期待でき、また成形性を
損わず、成形物の脆弱化もほとんど起こさないが、特に
黒鉛粉末５０〜７５ｗｔ気樹脂５０〜２５ｗｔ％である
ときに特性の向上が著しい。ＰＭＭＡは一般に塩化ピニ
ル樹脂の加工助剤として広く使用されているものである
が、ポリプロピレンとの配合比は任意に定められ、目的
とする成形物の形状や特性によつて変化させうる。ゴム
系材料は、樹脂に対して２〜５０ｗｔ％の範囲で必要に
応じて添加され、約１０ｗｔ％添加すれば、弾性率Ｅは
約２０％低下するが、内部損失Ｔａｎδに約１．５〜２
倍の向上が見られる。スピーカの非振動系構成体の製造
にあたつては、まずポリプロピレン単体又はポリプロピ
レンとポリメチルメタクリレートとの混合樹脂材料、さ
らに必要ならばこれらにゴム系材料を添加した樹脂材料
１と鱗片状黒鉛粉末２とを混合し、さらに必要に応じて
可塑剤や安定剤を添加して混合し、これを二ーダ又はロ
ールのような適宜の混練装置によ勺第１図に示すように
樹脂材料の軟化溶融温度の１９０〜２１０℃で加熱しつ
つ混練する。この混線材料３は、そのまま圧縮成形、射
出成形、プレス成形等の適宜な成形方法によるスピーカ
フレーム、ホーン、音響レンズ、イコライザ、グリル等
のスピーカ構成体の成形に使用される。例えば圧縮成形
を例にとれば、第２図に示すように、目的とするスピー
カの非振動系構成体の形状に対応した型４に材料３を投
入し、次に型５を型４と嵌合させて加熱下で圧力を加え
て材料３を型４，５内の隅々まで流れさせ、しかるのち
型４，５を冷却する。次に型４，５を開離させて中から
成形物６を取り出すのである。第３図ａ−ｄはそれぞれ
上記方法で成形されたスピーカフレーム７、ホーン８、
音響レンズ９、イコライザ１０、グリル１１を示す。尚
、音響レンズ９は、１枚１枚の板材９ａを上記方法で成
形し、組立てたものである。上記混線材料３は、黒鉛粉
末２が樹脂材料１内で一方向に配向していないために弾
性率Ｅが配向している場合の１／２〜１／３であり剛性
において劣るが、高内部損失は変わらず、共振を起こし
にくいとともに振動に対して十分な減衰特性を有してい
て、スピーカの非振動系の構成体の成形に使用しうるの
である。混線材料３は、その弾性率を向上させるために
ロールによ勺何度も圧延されて第４図に示すようにシー
ト化される。In addition, the blending ratio of this graphite powder and resin is 10 to 10
90 wt (F6s resin in the range of 90 to 10 wt%), graphite powder can be expected to improve the elastic modulus, and will not impair moldability and will hardly cause the molded product to become brittle. The properties are significantly improved when the resin content is 50 to 25 wt%.PMMA is generally widely used as a processing aid for pinyl chloride resin, but the blending ratio with polypropylene can be arbitrarily determined, and it can be It can be changed depending on the shape and properties of the molded product.The rubber material is added as necessary in the range of 2 to 50 wt% to the resin, and if it is added about 10 wt%, the elastic modulus E will be about 20%. Although the internal loss Tan δ decreases by about 1.5 to 2
You can see a two-fold improvement. When manufacturing the non-vibration system component of the speaker, first, polypropylene alone or a mixed resin material of polypropylene and polymethyl methacrylate, and if necessary, resin material 1 in which a rubber material is added to these resin materials and flaky graphite powder are used. 2, and if necessary, add a plasticizer or stabilizer, mix, and mix this into a resin material using an appropriate kneading device such as a kneader or roll as shown in Figure 1. The mixture is kneaded while being heated at a softening and melting temperature of 190 to 210°C. This crosstalk material 3 is used as it is for molding speaker components such as speaker frames, horns, acoustic lenses, equalizers, grilles, etc. by appropriate molding methods such as compression molding, injection molding, and press molding. For example, taking compression molding as an example, as shown in Figure 2, material 3 is put into a mold 4 corresponding to the shape of the non-vibration system component of the intended speaker, and then mold 5 is fitted into mold 4. The materials 3 are combined under heat and pressure is applied to flow the material 3 to every corner within the molds 4 and 5, and then the molds 4 and 5 are cooled. Next, the molds 4 and 5 are opened and the molded product 6 is taken out from inside. Figures 3a to 3d show the speaker frame 7, horn 8, and
An acoustic lens 9, an equalizer 10, and a grill 11 are shown. The acoustic lens 9 is formed by molding and assembling individual plates 9a using the method described above. Since the graphite powder 2 is not oriented in one direction in the resin material 1, the crosstalk material 3 has an elastic modulus E that is 1/2 to 1/3 of that in the case where it is oriented, and is inferior in rigidity, but has a high internal It has the same loss, is less likely to cause resonance, and has sufficient damping characteristics against vibrations, so it can be used for molding non-vibrating components of speakers. In order to improve its elastic modulus, the cross-wire material 3 is rolled many times with rolls to form a sheet as shown in FIG. 4.
このロール圧延によるシート化によジ黒鉛粉末２はシー
ト材１２の帯面に沿つて配向され、弾性率を未配向時の
２〜３倍にする。このシート材１２は、必要に応じて１
枚だけで又は第５図に示すように適当枚数重ねられ加熱
下に真空成形、圧空成形、プレス成形等の成形方法によ
う第３図ａ−ｄに示したような所望のスピーカの非振動
系構成体に成形される。すなわちスピーカの非振動系構
成体が厚みのあるものである場合、必要とする厚みにな
るまでシート材１２を重ね、これを下型に入れ上型で押
えて加圧するプレス成形法により得ることができる。こ
の成形により得られる各スピーカの非振動系構成体では
、黒鉛粉末が表面に沿つて配向したものとな）、剛性・
弾性率が大きな値となる。本発明を次に実施例に基いて
具体的に説明する。By rolling the digraphite powder into a sheet, the digraphite powder 2 is oriented along the band surface of the sheet material 12, and its elastic modulus is increased to 2 to 3 times that of the unoriented one. This sheet material 12 may be
A non-vibrating system of a desired speaker as shown in FIGS. 3a to 3d can be formed by a molding method such as vacuum forming, pressure forming, or press forming by stacking a suitable number of sheets alone or under heating as shown in FIG. 5. Molded into a construct. In other words, if the non-vibration system component of the speaker is thick, it can be obtained by a press molding method in which the sheet materials 12 are stacked until the required thickness is achieved, and then placed in a lower mold and pressed by an upper mold to apply pressure. can. The non-vibrating structure of each speaker obtained by this molding has graphite powder oriented along the surface), rigidity and
The elastic modulus becomes a large value. The present invention will now be specifically explained based on Examples.
以上の配合割合で各粉末を二ーダで１９０〜２１０℃の
加熱下に混練して混練物を得た。また黒鉛の配向を得る
ために上記混練物をローラに何度もかけてシート材を得
た。これらの材料の物理特性を次の表に示す。次に上記
実施例の材料で種々のスピーカの非振動系構成体を成形
した。Each powder was kneaded at the above blending ratios in a kneader while heating at 190 to 210°C to obtain a kneaded product. In addition, in order to obtain orientation of graphite, the above-mentioned kneaded material was passed through rollers many times to obtain a sheet material. The physical properties of these materials are shown in the table below. Next, various non-vibration system components of speakers were molded using the materials of the above examples.
すなわち実施例の材料で、黒鉛粉末が未配向の場合と配
向している場合とにつきそれぞれスピーカフレーム、ホ
ーン、イコライザ、音響レンズ、グリルを圧縮成形とプ
レス成形で製造した。上記で得た各スピーカの非振動系
構成体では、材料組成が合成樹脂と黒鉛粉末とを主成分
とするので密度が小さくて軽量であわ、また内部損失は
黒鉛粉末の結晶組織の特徴及びゴム系材料の添加された
ものではその軟質性により大きなものであつた。That is, using the material of the example, a speaker frame, a horn, an equalizer, an acoustic lens, and a grill were manufactured by compression molding and press molding for cases in which the graphite powder was unoriented and in cases in which the graphite powder was oriented, respectively. The non-vibrating structure of each speaker obtained above has a material composition mainly composed of synthetic resin and graphite powder, so it has a low density and is lightweight. In the case of those to which a type of material was added, it was greater due to its softness.
さらに黒鉛粉末の配向されたものでは弾性、剛性が大き
いものであり、従つて強度を保ちながら高内部損失のも
のとして各構成体を形成することができた。さらに上記
各構成体の耐熱性の測定をしたところ約１２０℃の加熱
下でも変形が生じない特長があつた。Further, the oriented graphite powder has high elasticity and rigidity, and therefore each structure can be formed with high internal loss while maintaining strength. Furthermore, when the heat resistance of each of the above structures was measured, it was found that they did not deform even when heated to about 120°C.
第１図は本発明スピーカの非振動系構成体の成形に用い
られる混線材料の断面図、第２図は本発明スピーカの非
振動系構成体の成形の一例を示す工程図、第３図Ａ，ｂ
，ｃ，ｄ，ｅはそれぞれ本発明の一実施例のスピーカフ
レーム、ホーン、音響レンズ、イコライザ、グリルの斜
視図、第４図は本発明スピーカの非振動系構成体の成形
に用いられる黒鉛粉末の配向されているシート材の断面
図、第５図は同上シート札”を積層した状態の斜視図で
ある。
１・・・樹脂材料、２・・・鱗片状黒鉛粉末、３・・・
混線材料、７・・・フレーム、８・・・ホーン、９・・
・音響レンズ、１０・・・イコライザ、１１・・・グリ
ル、１２・・・シート材。FIG. 1 is a cross-sectional view of the cross-wire material used for molding the non-vibrating component of the speaker of the present invention, FIG. 2 is a process diagram showing an example of molding the non-vibrating component of the speaker of the present invention, and FIG. 3A ,b
, c, d, and e are perspective views of a speaker frame, a horn, an acoustic lens, an equalizer, and a grill, respectively, according to an embodiment of the present invention, and FIG. FIG. 5 is a perspective view of a laminated state of the above-mentioned sheet tags. 1...Resin material, 2...Scaly graphite powder, 3...
Crosstalk material, 7... Frame, 8... Horn, 9...
- Acoustic lens, 10... Equalizer, 11... Grill, 12... Sheet material.
Claims (1)
混線材料で形成されたスピーカの非振動系構成体。 ２ ポリプロピレンと鱗片状黒鉛粉末とを主成分とする
混線材料で形成され、鱗片状黒鉛粉末が表面に沿つて配
向されていることを特徴とするスピーカの非振動系構成
体。 ３ ポリプロピレンとポリメチルメタクリレートと、鱗
片状黒鉛粉末とを主成分とする混線材料で形成されたス
ピーカの非振動系構成体。 ４ ポリプロピレンとポリメチルメタクリレートと鱗片
状黒鉛粉末とを主成分とする混線材料で形成され、鱗片
状黒鉛粉末が表面に沿つて配向されていることを特徴と
するスピーカの非振動系構成体。 ５ ポリプロピレンとゴム系材料と鱗片状黒鉛粉末とを
主成分とする混線材料で形成されたスピーカの非振動系
構成体。 ６ ポリプロピレンとゴム系材料と鱗片状黒鉛粉末とを
主成分とする混線材料で形成され、鱗片状黒鉛粉末が表
面に沿つて配向されていることを特徴とするスピーカの
非振動系構成体。 ７ ポリプロピレンとポリメチルメタクリレートとゴム
系材料と鱗片状黒鉛粉末とを主成分とする混線材料で形
成されたスピーカの非振動系構成体。 ８ ポリプロピレンとポリメチルメタクリレートとゴム
系材料と鱗片状黒鉛粉末とを主成分とする混線材料で形
成され、鱗片状黒鉛粉末が表面に沿つて配向されている
ことを特徴とするスピーカの非振動系構成体。[Scope of Claims] 1. A non-vibrating component of a speaker made of a crosstalk material whose main components are polypropylene and flaky graphite powder. 2. A non-vibration system structure for a speaker, characterized in that it is formed of a cross-wire material mainly composed of polypropylene and flaky graphite powder, and the flaky graphite powder is oriented along the surface. 3. A non-vibration system component of a speaker formed of a crosstalk material whose main components are polypropylene, polymethyl methacrylate, and flaky graphite powder. 4. A non-vibration system structure for a speaker, which is formed of a cross-wire material mainly composed of polypropylene, polymethyl methacrylate, and flaky graphite powder, and is characterized in that the flaky graphite powder is oriented along the surface. 5. A non-vibration system component of a speaker formed of a mixed wire material whose main components are polypropylene, a rubber-based material, and flaky graphite powder. 6. A non-vibration system structure for a speaker, characterized in that it is formed of a cross-wire material whose main components are polypropylene, a rubber-based material, and flaky graphite powder, and the flaky graphite powder is oriented along the surface. 7. A non-vibration system component of a speaker formed of a crosstalk material whose main components are polypropylene, polymethyl methacrylate, a rubber material, and flaky graphite powder. 8. A non-vibration system for a speaker made of a mixed wire material mainly composed of polypropylene, polymethyl methacrylate, a rubber material, and flaky graphite powder, and characterized in that the flaky graphite powder is oriented along the surface. construct.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55040269A JPS5912230B2 (en) | 1980-03-31 | 1980-03-31 | Speaker non-vibration system components |
| US06/244,895 US4362772A (en) | 1980-03-31 | 1981-03-18 | Vibratory elements for audio equipment |
| GB8109533A GB2072694B (en) | 1980-03-31 | 1981-03-26 | Vibratory elements for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55040269A JPS5912230B2 (en) | 1980-03-31 | 1980-03-31 | Speaker non-vibration system components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56137790A JPS56137790A (en) | 1981-10-27 |
| JPS5912230B2 true JPS5912230B2 (en) | 1984-03-21 |
Family
ID=12575916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55040269A Expired JPS5912230B2 (en) | 1980-03-31 | 1980-03-31 | Speaker non-vibration system components |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5912230B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629326U (en) * | 1985-07-01 | 1987-01-20 | ||
| JPS6328224U (en) * | 1986-08-08 | 1988-02-24 | ||
| JPS6399632U (en) * | 1986-12-16 | 1988-06-28 | ||
| JPH037864Y2 (en) * | 1985-07-03 | 1991-02-27 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105398A (en) * | 1983-11-11 | 1985-06-10 | Onkyo Corp | Speaker cabinet |
| JPS60105399A (en) * | 1983-11-11 | 1985-06-10 | Onkyo Corp | Speaker horn |
-
1980
- 1980-03-31 JP JP55040269A patent/JPS5912230B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629326U (en) * | 1985-07-01 | 1987-01-20 | ||
| JPH037864Y2 (en) * | 1985-07-03 | 1991-02-27 | ||
| JPS6328224U (en) * | 1986-08-08 | 1988-02-24 | ||
| JPS6399632U (en) * | 1986-12-16 | 1988-06-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56137790A (en) | 1981-10-27 |
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