JPS617798A - Speaker diaphragm - Google Patents
Speaker diaphragmInfo
- Publication number
- JPS617798A JPS617798A JP12876384A JP12876384A JPS617798A JP S617798 A JPS617798 A JP S617798A JP 12876384 A JP12876384 A JP 12876384A JP 12876384 A JP12876384 A JP 12876384A JP S617798 A JPS617798 A JP S617798A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- cell
- core
- carbon particles
- resin adhesive
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明はスピーカ振動板の改良に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to improvements in speaker diaphragms.
一般に、スピーカ振動板は、いわゆる機械的共振の鋭さ
が適度にあること、しかも比弾性率が高いことすなわち
軽量かつ硬質であることが理想的な条件として要求され
ている。Generally speaking, a speaker diaphragm is ideally required to have an appropriate degree of so-called mechanical resonance sharpness, and also to have a high specific modulus of elasticity, that is, to be lightweight and hard.
従来、この条件に近い条件を有する振動板として、第１
図および第２図に示すようにハニカム構造をもつ振動板
コアを備えたものが採用されており、これを同図に基づ
いて概略説明すると、■はハニカム構造をもつ振動板コ
ア、２および３はこの振動板コア１の表裏側に樹脂系接
着剤４により設けられた表裏面側スキンである。Conventionally, as a diaphragm having conditions close to this condition, the first
As shown in Figures 1 and 2, a diaphragm core with a honeycomb structure is used.This will be briefly explained based on the figure.■ indicates a diaphragm core with a honeycomb structure, are front and back side skins provided on the front and back sides of this diaphragm core 1 with a resin adhesive 4.
このように構成されたスピーカ振動板においては、振動
板コア１が中空構造であるため、板重量をほとんど増加
することなく、曲げ剛性に関係する板厚を大きくするこ
とができる。In the speaker diaphragm configured in this way, since the diaphragm core 1 has a hollow structure, the thickness of the diaphragm, which is related to bending rigidity, can be increased without increasing the weight of the diaphragm.
ところが、従来のスピーカ振動板においては、いわゆる
太鼓構造であるため、高域周波数で振動板コア１の各セ
ル１ａに共振現象が起き、周波数特性の乱れ、音圧量の
増加か生して音質も劣化するという欠点があった。However, since conventional speaker diaphragms have a so-called drum structure, resonance occurs in each cell 1a of the diaphragm core 1 at high frequencies, resulting in disturbances in frequency characteristics and an increase in sound pressure, resulting in poor sound quality. It also had the disadvantage of deteriorating.
本発明はこのような事情に鑑みなされたもので、振動板
コアのセル内に、炭素微粒子とこれらを結合する樹脂接
着剤を充填するというきわめて簡単な構成により、曲げ
剛性が高いだけでなく、セル共振が起こらない高性能な
スピーカ振動板を提供するものである。以下、その構成
等を図に示す実流側によって詳細に説明する。The present invention was developed in view of these circumstances, and has a very simple structure in which the cells of the diaphragm core are filled with carbon fine particles and a resin adhesive that binds them. The present invention provides a high-performance speaker diaphragm that does not cause cell resonance. Hereinafter, the configuration and the like will be explained in detail based on the actual flow side shown in the figure.
第３図および第４図は本発明に係るスピーカ振動板を示
す断面図、第５図は同じくスピーカ振動板に用いる振動
板コア内を拡大して示す断面図で、同図おいて第１図お
よび第２図と同一の部材については同一の符号を付し、
詳細な説明は省略する。3 and 4 are sectional views showing the speaker diaphragm according to the present invention, and FIG. 5 is an enlarged sectional view showing the inside of the diaphragm core used in the speaker diaphragm. And the same parts as in Fig. 2 are given the same reference numerals.
Detailed explanation will be omitted.
同図ニオイて、前記振動板コア１のセルｌａ内には、中
空部１１ａを有する無数の炭素微粒子１１と、これら炭
素微粒子１１を結合する樹脂接着剤１２が充填されてい
る。すなわち、樹脂マトリックス状の炭素微粒子１１が
セルｌａ内に配設されている。この炭素微粒子１１は比
重値０．１５〜０．４０の軽量で、真珠に近く、また中
空度および材料厚が均一の高強度材料で形成されている
。As shown in the figure, cells la of the diaphragm core 1 are filled with numerous carbon particles 11 having hollow portions 11a and a resin adhesive 12 for bonding these carbon particles 11. That is, resin matrix-like carbon fine particles 11 are arranged within the cell la. The carbon fine particles 11 are lightweight with a specific gravity of 0.15 to 0.40, similar to pearls, and are made of a high-strength material with uniform hollowness and material thickness.
また、樹脂接着剤１２により、前記両スキン材２゜３が
前記振動板コア１の表裏側に固着されている。Further, both the skin materials 2° 3 are fixed to the front and back sides of the diaphragm core 1 with a resin adhesive 12.
このように構成されたスピーカ振動板においては、振動
板コア１のセル１ａ内に無数の炭素微粒子１１と樹脂接
着剤１２が充填されているため、振動板の同一厚さに対
する曲げ剛性は高くなる。In the speaker diaphragm configured in this way, the cells 1a of the diaphragm core 1 are filled with countless carbon particles 11 and resin adhesive 12, so the flexural rigidity for the same thickness of the diaphragm is increased. .
しかも、セル１ａの共振現象が起こらず、分割振動がす
ることなくより高域の周波数まで再生できる。また、従
来技術と比較して機械的共振の鋭さを低下することがで
き、広範囲の帯域で安定した周波数特性をもたせること
ができる。このことは数多くの実験により立証されてお
り、第６図および第７図に示す音圧レベルー周波数特性
曲線、音圧歪−周波数特性曲線から周波数特性および音
圧歪の改善具合を知ることができる。この場合、同図に
おいて、縦軸に音圧レベル、音圧歪が、横軸に周波数が
目盛られている。Furthermore, the resonance phenomenon of the cell 1a does not occur, and even higher frequencies can be reproduced without splitting vibrations. Furthermore, the sharpness of mechanical resonance can be reduced compared to the conventional technology, and stable frequency characteristics can be provided over a wide range of bands. This has been proven through numerous experiments, and the degree of improvement in frequency characteristics and sound pressure distortion can be determined from the sound pressure level-frequency characteristic curves and sound pressure distortion-frequency characteristic curves shown in Figures 6 and 7. . In this case, in the figure, the vertical axis represents the sound pressure level and sound pressure distortion, and the horizontal axis represents the frequency.
さらに、振動板コア１の重さが軽量であるため、実用的
にすくれたスピーカ振動板を提供することができる。Furthermore, since the weight of the diaphragm core 1 is light, it is possible to provide a speaker diaphragm that is practically hollow.
以上説明したように本発明によれば、振動板コアのセル
内に、中空部を有する無数の炭素微粒子とこれら炭素微
粒子を結合する樹脂接着剤を充填したので、曲げ剛性を
高くすることができるだけでなく、セル共振を生しさせ
ることなく高域の周波数まで再生できる。したがって、
従来のように周波数特性の乱れ、音圧歪の増加が生じて
音質が劣化することがなくなり、振動板としての性能を
確実に向上させることができる。As explained above, according to the present invention, the cells of the diaphragm core are filled with countless carbon fine particles having hollow parts and a resin adhesive that binds these carbon fine particles, so that the bending rigidity can be increased as much as possible. It is possible to reproduce up to high frequencies without causing cell resonance. therefore,
This eliminates the deterioration of sound quality due to disturbances in frequency characteristics and increases in sound pressure distortion as in the past, and the performance of the diaphragm can be reliably improved.
第１図は従来のスピーカ振動板を示す断面図、第２図は
その振動板コア内を拡大して示す断面図、第３図および
第４図は本発明に係るスピーカ振動板を示す断面図、第
５図は同じくスピーカ振動板に用いる振動板コア内を拡
大して示す断面図、第６図および第７図はそれぞれ音圧
レベルー周波数特性曲線、音圧歪−周波数特性曲線を示
す図である。
１・・・・ｆＪｆｌ板コア、１ａ・・・・セル、１１・
・・・炭素微粒子、１２．・・・・樹脂接着剤。FIG. 1 is a sectional view showing a conventional speaker diaphragm, FIG. 2 is an enlarged sectional view showing the inside of the diaphragm core, and FIGS. 3 and 4 are sectional views showing a speaker diaphragm according to the present invention. , Fig. 5 is an enlarged cross-sectional view of the inside of the diaphragm core used in the speaker diaphragm, and Figs. 6 and 7 are diagrams showing the sound pressure level-frequency characteristic curve and the sound pressure distortion-frequency characteristic curve, respectively. be. 1... fJfl board core, 1a... cell, 11...
... Carbon fine particles, 12. ...Resin adhesive.
Claims (1)
において、前記振動板コアのセル内に、中空部を有する
無数の炭素微粒子とこれら炭素微粒子を結合する樹脂接
着剤を充填したことを特徴とするスピーカ振動板。A speaker diaphragm equipped with a diaphragm core having a honeycomb structure, characterized in that cells of the diaphragm core are filled with countless carbon particles having hollow parts and a resin adhesive for bonding these carbon particles. speaker diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12876384A JPS617798A (en) | 1984-06-22 | 1984-06-22 | Speaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12876384A JPS617798A (en) | 1984-06-22 | 1984-06-22 | Speaker diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS617798A true JPS617798A (en) | 1986-01-14 |
Family
ID=14992862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12876384A Pending JPS617798A (en) | 1984-06-22 | 1984-06-22 | Speaker diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS617798A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7344001B2 (en) * | 2005-05-25 | 2008-03-18 | Onkyo Corporation | Speaker diaphragm and speaker structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375920A (en) * | 1976-12-15 | 1978-07-05 | Pioneer Electronic Corp | Coating agent for improving physical properties of vibration plate of loudspeaker |
| JPS55136795A (en) * | 1979-04-13 | 1980-10-24 | Pioneer Electronic Corp | Diaphragm plate of acoustic unit |
-
1984
- 1984-06-22 JP JP12876384A patent/JPS617798A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375920A (en) * | 1976-12-15 | 1978-07-05 | Pioneer Electronic Corp | Coating agent for improving physical properties of vibration plate of loudspeaker |
| JPS55136795A (en) * | 1979-04-13 | 1980-10-24 | Pioneer Electronic Corp | Diaphragm plate of acoustic unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7344001B2 (en) * | 2005-05-25 | 2008-03-18 | Onkyo Corporation | Speaker diaphragm and speaker structure |
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