JPS591035B2 - flat diaphragm - Google Patents
flat diaphragmInfo
- Publication number
- JPS591035B2 JPS591035B2 JP55015399A JP1539980A JPS591035B2 JP S591035 B2 JPS591035 B2 JP S591035B2 JP 55015399 A JP55015399 A JP 55015399A JP 1539980 A JP1539980 A JP 1539980A JP S591035 B2 JPS591035 B2 JP S591035B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- skin
- capsule
- flat diaphragm
- holes
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Description
【発明の詳細な説明】
本発明は、スピーカやマイクロホン等のような音響変換
器の平面振動板に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a planar diaphragm for an acoustic transducer such as a speaker or microphone.
平面振動板の内、アルミニウム箔その他の材質を使った
ハニカム構造体をコア材１として、その表裏両面に金属
シート、合成樹脂シート等のスキン材２，３を貼り付け
て形成されるノ・ニカム振動板は、その裏面のスキン材
３の側にボビン４が固着され、そのボビン４にボイスコ
イル５が換装される。Among planar diaphragms, a honeycomb structure made of aluminum foil or other material is used as the core material 1, and skin materials 2 and 3 such as metal sheets or synthetic resin sheets are attached to both sides of the core material. A bobbin 4 is fixed to the skin material 3 side of the back surface of the diaphragm, and a voice coil 5 is attached to the bobbin 4.
ところが、そのボイスコイル５に音声信号電流を流して
、その振動板に駆動力を与える場合において、そのボイ
スコイル５に発熱が起り、その熱がボビン４を伝わって
振動板にまで至ると、その振動板のコア材１とスキン材
２，３で囲まれるカプセルａ内の空気が膨張し、スキン
材２，３が破壊したり、またスキン材２，３が塩化ビニ
ルのような熱に弱い物質の場合には熱変形する。However, when an audio signal current is passed through the voice coil 5 to provide a driving force to the diaphragm, heat is generated in the voice coil 5, and when that heat is transmitted through the bobbin 4 and reaches the diaphragm, the The air inside the capsule a surrounded by the core material 1 and the skin materials 2 and 3 of the diaphragm expands, causing the skin materials 2 and 3 to break, and the skin materials 2 and 3 to be made of heat-sensitive materials such as vinyl chloride. In this case, it is thermally deformed.
従って従来のハニカム振動板は、大出力用としては不向
きであった。Therefore, conventional honeycomb diaphragms are not suitable for high output applications.
本発明はハニカム振動板のカプセル内の空気が外部に出
入するようにして、前記した問題点を解消せんとするも
のである。The present invention attempts to solve the above-mentioned problems by allowing the air inside the capsule of the honeycomb diaphragm to go in and out to the outside.
以下、図を参照して本発明の詳細な説明すると、第４図
は裏側のスキン材３に小孔３ａを明け、且つコア材１に
も相互のカプセルａが通ずるような穴１ａを形成して、
カプセルａ内の空気がカプセルａの相互間を移動し、且
つ穴３ａを介して外にも出るようにしたものである。Hereinafter, the present invention will be described in detail with reference to the drawings. In Fig. 4, a small hole 3a is formed in the skin material 3 on the back side, and a hole 1a is formed in the core material 1 so that the capsules a communicate with each other. hand,
The air inside the capsules a moves between the capsules a and also exits through the holes 3a.
これにより、カプセルａは密閉状態とはならないので、
そこに熱がこもって熱膨張による不都合が起ることはな
く、耐入力を向上させることができる。As a result, capsule a is not in a sealed state, so
Inconveniences due to thermal expansion due to heat being trapped there do not occur, and the input resistance can be improved.
また、この場合においては、表側スキン材２に何らの穴
も明けられていないので、音の立上り波形がなまること
がなく高忠実度再生が可能となり、しかも裏面スキン材
３の穴３ａを通じて接着ガスも抜けるので、加工が容易
となり、接着力がすぐれるようにもなる。In addition, in this case, since no holes are made in the front skin material 2, high-fidelity reproduction is possible without dulling the rising waveform of the sound. Gas also escapes, making processing easier and providing superior adhesive strength.
第５図イ〜ハは、裏側のスキン材３に２個以上のカプセ
ルに連続する穴３ｂｔ〜３ｂａを形成したもので、この
実施例によれば熱の放出以外に、振動板自体の質量を軽
減することができるようにもなり、高域再生限界周波数
を伸ばすことができるようになる。5A to 5C, holes 3bt to 3ba connected to two or more capsules are formed in the skin material 3 on the back side. According to this embodiment, in addition to releasing heat, the mass of the diaphragm itself is It also becomes possible to reduce the amount of noise and extend the high-frequency reproduction limit frequency.
なお、以上の実施例においてはすべてのカプセルについ
て外気と通じるようにしたが、実際に熱膨張の起るカプ
セルはボビンに近い部分のカプセルであるので、その部
分のみのカプセルについて穴を明けるようにしても良い
。In the above embodiment, all the capsules were made to communicate with the outside air, but since the capsule where thermal expansion actually occurs is the capsule in the part near the bobbin, holes were made only in that part of the capsule. It's okay.
また、以上の実施例においては表裏のスキン材２，３を
シート材としたが、裏側のシート材３を通気性のある織
布又は不織布としても良く、更にその布は部分的に塗布
剤の塗布により目づめをしても良い。Further, in the above embodiments, the front and back skin materials 2 and 3 are sheet materials, but the back sheet material 3 may be made of breathable woven or non-woven fabric, and furthermore, the cloth may be partially coated with the coating agent. It may also be applied to seal the eyes.
以上から、本発明によれば、裏面のスキン材に形成した
穴を通じてカプセル内の空気が外気と通じるようになる
ので、高忠実度再生が可能で、しかも熱膨張によるスキ
ン材の破損や変形は生せず、耐入力を大幅に向上して大
出力化を実現することができるようになる。From the above, according to the present invention, the air inside the capsule communicates with the outside air through the holes formed in the skin material on the back surface, so high-fidelity reproduction is possible, and the skin material is not damaged or deformed due to thermal expansion. This makes it possible to significantly improve input resistance and achieve high output.
また、スキン材に形成する穴を大きくＪれば振動板自体
の軽量化につながり、周波数特性を向上させるこ吉がて
きる。Furthermore, if the holes formed in the skin material are made larger, the weight of the diaphragm itself can be reduced, which improves the frequency characteristics.
第１図はハニカム振動板の分解斜視図、第２図は全体の
斜視図、第３図は断面図、第４図は本発明の一実施例の
振動板の部分断面図、第５図イ〜ハは別の実施例のスキ
ン材の平面図である。
１・・・・・・コア材、２，３・・・・・・スキン材、
ａ・・・・・・カプセル、１ ａ、２ａ ＋ ３ａ ２
：３ｂｌ”：３ｂ３”””穴。Fig. 1 is an exploded perspective view of a honeycomb diaphragm, Fig. 2 is an overall perspective view, Fig. 3 is a sectional view, Fig. 4 is a partial sectional view of a diaphragm of an embodiment of the present invention, and Fig. 5 is an exploded perspective view of a honeycomb diaphragm. -C are plan views of skin materials of other examples. 1...Core material, 2,3...Skin material,
a... Capsule, 1 a, 2a + 3a 2
:3bl”:3b3”””hole.
Claims (1)
キン材を貼着して形成した平面振動板において、前記裏
面のスキン材にのみ穴を形成して、内部のカプセルの空
気が外気と通じるようにしたことを特徴とする平面振動
板。1. In a flat diaphragm formed by using a honeycomb structure as a core material and pasting skin materials on both the front and back surfaces, holes are formed only in the skin material on the back surface so that the air in the internal capsule can communicate with the outside air. A flat diaphragm characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55015399A JPS591035B2 (en) | 1980-02-13 | 1980-02-13 | flat diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55015399A JPS591035B2 (en) | 1980-02-13 | 1980-02-13 | flat diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56114498A JPS56114498A (en) | 1981-09-09 |
| JPS591035B2 true JPS591035B2 (en) | 1984-01-10 |
Family
ID=11887647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55015399A Expired JPS591035B2 (en) | 1980-02-13 | 1980-02-13 | flat diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591035B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9756426B2 (en) | 2014-09-01 | 2017-09-05 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5665194B2 (en) * | 2011-08-19 | 2015-02-04 | 株式会社オーディオテクニカ | Electroacoustic transducer diaphragm and method of manufacturing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630070Y2 (en) * | 1977-11-16 | 1981-07-17 | ||
| JPS5750867Y2 (en) * | 1979-05-31 | 1982-11-06 |
-
1980
- 1980-02-13 JP JP55015399A patent/JPS591035B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9756426B2 (en) | 2014-09-01 | 2017-09-05 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56114498A (en) | 1981-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62120193A (en) | Ear cushion for headphone | |
| JPS591035B2 (en) | flat diaphragm | |
| JPS628076B2 (en) | ||
| JPH0448079Y2 (en) | ||
| JPS591034B2 (en) | flat diaphragm | |
| JPS6311815Y2 (en) | ||
| JPH024552Y2 (en) | ||
| JPS631516Y2 (en) | ||
| JPH0733515Y2 (en) | Speaker diaphragm | |
| JPS5925557B2 (en) | speaker flat diaphragm | |
| JPS5930398A (en) | Speaker | |
| JPS63266493A (en) | Sound absorber | |
| JPS5915184Y2 (en) | microphone | |
| JPS5925558B2 (en) | flat diaphragm | |
| JPS5832387Y2 (en) | vibrating body | |
| JPS6343493A (en) | Earphone | |
| JPH0681356B2 (en) | Speaker | |
| JPS6342769Y2 (en) | ||
| JPH02248196A (en) | Dome type speaker | |
| JPS6313590B2 (en) | ||
| JPH0117913Y2 (en) | ||
| JPS60224400A (en) | Thin piezoelectric speaker | |
| JPH04150700A (en) | Panel speaker | |
| JPS584393Y2 (en) | Loudspeaker diaphragm | |
| JPS5819914Y2 (en) | Honeycomb diaphragm for speakers |