JPS5983497A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS5983497A JPS5983497A JP19386882A JP19386882A JPS5983497A JP S5983497 A JPS5983497 A JP S5983497A JP 19386882 A JP19386882 A JP 19386882A JP 19386882 A JP19386882 A JP 19386882A JP S5983497 A JPS5983497 A JP S5983497A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- thin plate
- projections
- bending rigidity
- uniformly
- 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)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は軽くて剛性の大きいスピーカー用振動板に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lightweight and highly rigid speaker diaphragm.
スピーカー用振動板としては、軽くてヤング率対密度の
比(以下w /p とする)が太き(、さらに厚みが
大きいことが要求される。この要求に対して従来は米国
特許3 、111.187号のように六角形のセル形状
を有するハニカム等のコアを芯材とし、この悲劇の表裏
面を貼ったサンドイッチ構造のハニカム振動板があった
。A diaphragm for a speaker is required to be light, have a large ratio of Young's modulus to density (hereinafter referred to as w/p), and be even thicker. There was a honeycomb diaphragm with a sandwich structure, such as No. 187, whose core material was a honeycomb core with a hexagonal cell shape, and the front and back sides of this tragedy were attached.
しかしこのハニカム振動板は、芯材であるハニカムコア
の製造方法が複雑で高価なことと、ハニカムコアによっ
て表面材が六角形状に均一に分割されているために1表
面材が各ハニカムコアのセル部分で振動する現象(以下
セル共振という)が特定の周波数で集中して生じ、振動
板から放射される音圧特性の周波数帯域を狭めていた。However, with this honeycomb diaphragm, the manufacturing method of the honeycomb core, which is the core material, is complicated and expensive, and the surface material is divided into hexagonal shapes evenly by the honeycomb core, so one surface material is the cell of each honeycomb core. A phenomenon in which parts vibrate (hereinafter referred to as cell resonance) occurs concentrated at a specific frequency, narrowing the frequency band of the sound pressure characteristics radiated from the diaphragm.
この発明は、上記のような従来のものの欠点を除去する
と同時に、さらに軽量化した低コストで高性能なスピー
カー用振動板を提供するものであり、振動板の全面にそ
の中心に対し円状でかつ周方向に均一に配置された多数
の中空の突起を有するとともにこの突起の底面部が抜き
孔とされた薄板と、この薄板の突起側に表面材を貼り付
けてなるスピーカー用振動板である。This invention eliminates the drawbacks of the conventional ones as described above, and at the same time provides a lightweight, low-cost, high-performance speaker diaphragm. A diaphragm for a speaker comprising a thin plate having a large number of hollow protrusions uniformly arranged in the circumferential direction and a hole in the bottom of the protrusion, and a surface material attached to the protrusion side of the thin plate. .
この発明は中空の突起を有する薄板とこの薄板の突起側
に表面材を貼り付けてなるためハニカム振動板に比べて
簡単に製造することができ、低コストで量産性に後れて
いると同時に2枚の薄板で構成されているために軽量で
ある。This invention consists of a thin plate with hollow protrusions and a surface material pasted on the protrusion side of the thin plate, so it can be manufactured more easily than a honeycomb diaphragm, and is low cost and lagging behind in mass production. It is lightweight because it is composed of two thin plates.
前記突起が振動板の中心にλ1して同心円状で周方向に
均一に配置されていることにより0周端部近傍の曲げ剛
性が均一で大きくなり振動板全面の曲げ剛性が均一化さ
れ高性能なスピーカー用振Ql板となる
表面材がハニカムコアで均一に分割される構造でないた
め9%定の周波数で集中してセル部の振動が生じず、音
圧特性の劣化も大幅に改善されるものである。Since the protrusions are arranged concentrically and uniformly in the circumferential direction with λ1 at the center of the diaphragm, the bending rigidity near the 0-periphery end is uniform and large, and the bending rigidity over the entire surface of the diaphragm is uniform, resulting in high performance. Because the surface material that serves as the vibration QL plate for speakers is not structured to be uniformly divided by the honeycomb core, vibrations do not occur in the cell part due to concentration at a constant frequency of 9%, and deterioration of sound pressure characteristics is also significantly improved. It is something.
以下図示実施例に従いこの発明の詳細についてさらに説
1明する。The details of this invention will be further explained below with reference to the illustrated embodiments.
第1図はこの発明の一実施例を示すスピーカー用振動板
の表面材の一部を切り欠いた平面図であり、第2図は第
1図のト」断面図である。これらの図において、(1)
は表面材、(3)は中空円筒状の突起(2)を有する薄
板であり、この突起(2)は振動板の中心に対して同心
円状で周方向に均一に配設されており、薄板(3)と一
体になっている。また突起(2)の底ff1r+部は抜
き孔となっている。FIG. 1 is a partially cutaway plan view of the surface material of a speaker diaphragm showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG. In these figures, (1)
is a surface material, (3) is a thin plate having hollow cylindrical protrusions (2), and these protrusions (2) are concentric with the center of the diaphragm and are uniformly arranged in the circumferential direction. It is integrated with (3). Further, the bottom ff1r+ portion of the projection (2) is a punched hole.
薄板(3)に用いられる材料はアルミやチタン宿、の金
属シート、マたはポリプロピレン、ポリエナレン、ポリ
カーボネートあるいはカーボンゆ紺強化ポリプロピレン
等のプラスチックスのシートであり9表面材(1)も薄
板(3)と同様の金属シートやプラスチックスのシート
さらには紙にプラスチックを混合した強化紙シートが用
いられろ。The material used for the thin plate (3) is a metal sheet such as aluminum or titanium, or a sheet of plastic such as polypropylene, polyenalene, polycarbonate, or carbon reinforced dark blue polypropylene.9 The surface material (1) is also a thin plate (3). ), metal sheets, plastic sheets, or even reinforced paper sheets made by mixing paper with plastic should be used.
表面材(1)は上記薄板(3)の円筒状突起(2)の先
端面にポリアミド系、またはEOA系接着接着剤り貼り
付けられる。The surface material (1) is pasted on the tip surface of the cylindrical projection (2) of the thin plate (3) using a polyamide-based or EOA-based adhesive.
つぎに製造方法について述べると、上述の金属やプラス
チックスのシートを真空成形、押し出し成形またはプレ
ス成形等の成形法を用いて、突起(2)を有する薄板(
3)を成形した後、突起(2)の先端仙]をわずか切断
して突起(2)を開口させる。この後上述の旧科からな
るシート状の表面側(1)を接着剤によって、突起(2
)の先端面に貼着スることによって振動板を製造するこ
とができる。Next, the manufacturing method will be described. The metal or plastic sheet mentioned above is formed into a thin plate (
After molding 3), the tip of the protrusion (2) is slightly cut to open the protrusion (2). After this, glue the surface side (1) of the sheet made of the above-mentioned old family with the projections (2).
) A diaphragm can be manufactured by pasting it on the tip surface of the diaphragm.
以上のように構成されたスピーカー用振動板は多層構造
体となっているためサンドイッチ構造の原理から1曲は
剛性が太きく、E//p も従来のハニカム振動板と同
等の(irjを得ることができる。)Fた突起(2)の
配植を同心円状とし9周方向に均一にしているので振動
板の周端部近傍における曲げ剛性を均一で大きくするこ
とができ、振1lIIl板全面の曲げ剛性が均一化され
る、。Since the speaker diaphragm constructed as described above has a multilayer structure, it has a high rigidity for one song due to the sandwich structure principle, and the E//p is equivalent to that of a conventional honeycomb diaphragm (to obtain irj). ) Since the projections (2) are arranged concentrically and uniformly in the circumferential direction, the bending rigidity near the peripheral edge of the diaphragm can be made uniform and large, and the entire surface of the diaphragm can be The bending stiffness of is equalized.
表面材(])の振v1形態に着目すると、第1図に示す
ような突起(21部が表面相(1)に接合された構造で
あるから、従来のハニカム振動板のように均一に分割さ
れていないため9%定の周波数に集中してセル部の振動
か生じることがなく、音圧特性の劣化が少ない。Focusing on the vibration v1 form of the surface material (), it has a structure in which 21 protrusions (21 parts) are joined to the surface phase (1) as shown in Figure 1, so it is divided uniformly like a conventional honeycomb diaphragm. Since the vibration is not concentrated at a constant frequency of 9%, vibrations in the cell section do not occur, and there is little deterioration in sound pressure characteristics.
さらに助板(3)への突起(2)の形成手段は上述のよ
うに成形法により簡便に行なえる。Further, the projections (2) on the auxiliary plate (3) can be simply formed by the molding method as described above.
なお、上記実施例においては、突起の形状を円としたが
1円にかぎらず四角形、五角形等の多角形構造としても
よく、同様な効果が得られる。また突起(2)の端面ば
開口しているものを実施例として示したが、突起(2)
の端面が閉じられていても良いことは当然である。こう
すればM1掘:は少し増すが切断する工程がなくなるば
かりか突起(21と表面材(1)の貼着工程がやりやす
くなる効果がある。In the above embodiment, the shape of the protrusion is circular, but the shape is not limited to a circle, but may be a polygonal structure such as a quadrangle or a pentagon, and the same effect can be obtained. In addition, although the end face of the protrusion (2) is shown as an example, the protrusion (2)
Of course, the end face may be closed. This will not only eliminate the cutting process, but will also make the process of attaching the protrusion (21) and the surface material (1) easier, although the M1 depth will increase slightly.
さらに振動板の形状としては、コーン形、ドーム形、平
板等いずれにも対応できるものである。Further, the shape of the diaphragm may be a cone shape, a dome shape, a flat plate, etc.
以上のようにこの発明によれば、多数の中空の突起を有
し、この突起の底面部が抜き穴とされた薄板と表面材と
で構成され、さらに上記突起は中心に対して同心円状で
周方向に均一に配置する構造とされているので、薄板を
簡単に製作することができ、低コストにすることができ
る。しかも2枚のシートで構成されるから軽量で、振動
板の周端部近傍の曲げ剛性も均一で大きく、振動板全面
の曲げ剛性が均一化されたスピーカー用振動板が得られ
るものである。As described above, according to the present invention, the protrusions have a large number of hollow protrusions, and the protrusions are composed of a thin plate with a hole in the bottom and a surface material, and furthermore, the protrusions are concentric with the center. Since the structure is such that they are arranged uniformly in the circumferential direction, thin plates can be easily manufactured and costs can be reduced. Moreover, since it is composed of two sheets, it is lightweight, and the bending rigidity near the peripheral edge of the diaphragm is uniform and large, and the diaphragm for a speaker has uniform bending rigidity over the entire surface of the diaphragm.
第1図はこの発明の一実施例を示す一部を切り欠いた平
面図、第2図は第1図の■−■断面図であるFig. 1 is a partially cutaway plan view showing an embodiment of the present invention, and Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1.
Claims (1)
にわたって配置される中空の突起が一体形成され、さら
に突起の底面部が抜き穴とされた薄板と、この薄板の上
記突起先端面に貼着された表面材とからなる構造体で構
成されることを特徴とするスピーカー用振動板。Hollow protrusions that are concentric with the center, uniform in the circumferential direction, and arranged over the entire surface are integrally formed, and the bottom of the protrusions is made into a hole, and the thin plate is attached to the tip of the protrusion. A diaphragm for a speaker, characterized in that it is constituted by a structure made of a surface material coated with a surface material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19386882A JPS5983497A (en) | 1982-11-04 | 1982-11-04 | Diaphragm for speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19386882A JPS5983497A (en) | 1982-11-04 | 1982-11-04 | Diaphragm for speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5983497A true JPS5983497A (en) | 1984-05-14 |
Family
ID=16315086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19386882A Pending JPS5983497A (en) | 1982-11-04 | 1982-11-04 | Diaphragm for speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5983497A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1988740A1 (en) * | 2007-05-03 | 2008-11-05 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Sound generator |
-
1982
- 1982-11-04 JP JP19386882A patent/JPS5983497A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1988740A1 (en) * | 2007-05-03 | 2008-11-05 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Sound generator |
WO2008136668A1 (en) * | 2007-05-03 | 2008-11-13 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Sound generator |
US9154882B2 (en) | 2007-05-03 | 2015-10-06 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Sound generator |
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