JPH0537595Y2 - - Google Patents
Info
- Publication number
- JPH0537595Y2 JPH0537595Y2 JP1986166506U JP16650686U JPH0537595Y2 JP H0537595 Y2 JPH0537595 Y2 JP H0537595Y2 JP 1986166506 U JP1986166506 U JP 1986166506U JP 16650686 U JP16650686 U JP 16650686U JP H0537595 Y2 JPH0537595 Y2 JP H0537595Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- center
- distance
- speaker
- buttful
- 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 - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】
「考案の目的」
（産業上の利用分野）
本考案はスピーカのバツフルに係り、特に音波
放射を改善するためにその外表面形状を改良した
ものに関する。[Detailed Description of the Invention] "Purpose of the Invention" (Field of Industrial Application) The present invention relates to a loudspeaker, and more particularly to a loudspeaker whose outer surface shape has been improved in order to improve sound wave radiation.
（従来の技術）
第５図はドーム型スピーカ１４のバツフルを示
しているが、従来のバツフル１１は一般には平面
であり、バツフル開口部１２の口縁にはテーパー
１３が形成されている。(Prior Art) FIG. 5 shows a baffle of a dome-shaped speaker 14, and the conventional buffle 11 is generally flat, and a taper 13 is formed at the edge of the buffle opening 12.
（考案が解決しようとする問題点）
ところが上記した従来のバツフル１１にあつて
は平面的であるためスピーカ１４の開口部から出
た音がバツフル面で反射して周波数特性を乱すと
いう欠点があつた。(Problem to be solved by the invention) However, since the conventional butt-full 11 described above is flat, it has the disadvantage that the sound emitted from the opening of the speaker 14 is reflected on the butt-full surface and disturbs the frequency characteristics. Ta.
本考案の目的は上記した従来のバツフルの欠点
を解消し、振動板から出た音波が自由空間との間
に音響的不連続を生じないようにすることによ
り、音波の反射や回折等を生じさせることなく、
また、指向特性も改善することができると共に、
平坦な周波数特性を得ることができるバツフルを
提供することにある。 The purpose of this invention is to eliminate the above-mentioned drawbacks of the conventional Batsuful, and to prevent acoustic discontinuities between the sound waves emitted from the diaphragm and the free space, thereby preventing reflections, diffraction, etc. of the sound waves. without letting
In addition, the directional characteristics can be improved, and
The object of the present invention is to provide a buffer that can obtain flat frequency characteristics.
「考案の構成」
（問題点を解決するための手段）
本考案に係るスピーカのバツフルは、バツフル
に形成された開口部の開口縁から外周方向に至る
表面形状を所定の曲率でホーン状に形成するが、
その曲率を、振動板の中心軸上の任意の点を中心
として該中心から振動板の外周縁に至る開き角と
上記中心から振動板外周縁までの距離とをそれぞ
れ基準として、上記中心からバツフルの外周面の
任意の点に至る開き角が上記中心から上記任意の
点までの距離と上記基準距離との距離差に応じて
指数関数的に増加するような値に設定したもので
ある。"Structure of the invention" (Means for solving the problems) The rounded part of the speaker according to the invention has a horn-shaped surface with a predetermined curvature from the opening edge of the opening formed in the rounded part to the outer circumferential direction. However,
The curvature is calculated from an arbitrary point on the central axis of the diaphragm, using the opening angle from the center to the outer periphery of the diaphragm as a reference, and the distance from the center to the outer periphery of the diaphragm. The opening angle to an arbitrary point on the outer circumferential surface is set to a value that increases exponentially in accordance with the distance difference between the distance from the center to the arbitrary point and the reference distance.
（作用）
バツフルの開口部口縁から外周方向に至る表面
形状が振動板から放射される音波に不連続を生じ
させないような所定の曲率で弧状に形成されてい
るから、スピーカ開口部における音響的整合が連
続的となつて音波の反射や回析等は生じない。(Function) Since the surface shape from the mouth edge of the opening of the speaker to the outer circumferential direction is formed in an arc shape with a predetermined curvature that does not cause discontinuity in the sound waves emitted from the diaphragm, the acoustic Matching is continuous and no reflection or diffraction of sound waves occurs.
（実施例）
本考案に係るスピーカのバツフルの実施例を第
１図乃至第４図に基づいて説明するが、第１図は
ドーム型スピーカにおける理想的形態のバツフル
の断面図、第２図はドーム型スピーカにおける通
常の使用状態におけるバツフルの断面図、第３図
は平面振動板を用いたスピーカにおけるバツフル
の断面図、第４図Ａ，Ｂは周波数特性及び指向特
性の比較特性図であり、第４図Ａは本考案に係る
バツフルの特性図、第４図Ｂは従来のバツフルの
特性図である。(Example) An example of the buttful of the speaker according to the present invention will be explained based on FIGS. FIG. 3 is a cross-sectional view of a buttful in a dome-shaped speaker under normal use, FIG. 3 is a cross-sectional view of a buttful in a speaker using a flat diaphragm, and FIGS. 4A and 4B are comparison characteristic diagrams of frequency characteristics and directivity characteristics. FIG. 4A is a characteristic diagram of a buttful according to the present invention, and FIG. 4B is a characteristic diagram of a conventional buttful.
図において、１はバツフル全体を指しており、
バツフル１に形成された開口部２の口縁２ａから
外周方向に至る表面形状が所定の曲率で弧状に形
成されている。第１図及び第２図のドーム状振動
板３の場合、点０はドーム状振動板３における球
中心と定めてその中心０から振動板外周縁３ａへ
の開き角をθ0とする。このとき中心０から振動板
外周縁３ａまでの距離をx0とする。このx0を基点
として距離（x1，x2…）に応じて指数関数的にθ0
がθ1，θ2…と増加していくような値の曲率に設定
されており、振動板外周縁３ａでの開き角をθ0と
し、x0からの距離をｘ、広がり係数をｍ、形状パ
ラメータをＴとすれば、任意の距離ｘでの開き角
θは
θ＝θ0｛cos.h（mx）＋Tsin.h（mx）｝
で示され、具体的には第１図及び第２図の如き形
状となる。 In the figure, 1 refers to the entire Batsuful,
The surface shape of the opening 2 formed in the baffle 1 from the mouth edge 2a to the outer circumferential direction is formed in an arc shape with a predetermined curvature. In the case of the dome-shaped diaphragm 3 shown in FIGS. 1 and 2, point 0 is defined as the spherical center of the dome-shaped diaphragm 3, and the opening angle from the center 0 to the outer periphery 3a of the diaphragm is defined as θ 0 . At this time, the distance from the center 0 to the outer peripheral edge 3a of the diaphragm is defined as x 0 . From this x 0 as the base point, θ 0 increases exponentially according to the distance (x 1 , x 2 ...)
The curvature is set to such a value that increases as θ 1 , θ 2 . If the shape parameter is T, the opening angle θ at an arbitrary distance The shape will be as shown in the figure.
第３図は平面振動板４の例であるが、この場合
においても中心点０を任意に定めることにより第
１図及び第２図で得たのと同様のバツフル形状を
得ることができる。 FIG. 3 shows an example of a flat diaphragm 4, and in this case as well, by arbitrarily determining the center point 0, a buff-full shape similar to that obtained in FIGS. 1 and 2 can be obtained.
第４図Ａは本考案の第１図及び第２図に示す実
施例によるバツフルの周波数特性及び指向特性で
あり、第４図Ｂに示す従来のバツフルの特性に比
較して著しく改善されていることが明らかであ
る。 FIG. 4A shows the frequency characteristics and directivity characteristics of the Buzzful according to the embodiment shown in FIGS. 1 and 2 of the present invention, which are significantly improved compared to the characteristics of the conventional Buzzful shown in FIG. 4B. That is clear.
「考案の効果」
本考案に係るスピーカのバツフルによれば、音
波放射を連続的に自由空間に整合させることがで
きるから、音波の反射や回析等を生じることがな
く、また、指向特性も改善することができる等の
効果がある。``Effects of the invention'' According to the Batsuful speaker according to the invention, sound wave radiation can be continuously aligned with free space, so there is no reflection or diffraction of sound waves, and the directional characteristics are also improved. There are effects such as being able to improve the situation.
第１図乃至第４図は本考案に係るスピーカのバ
ツフルの実施例を示し、第１図はドーム型スピー
カにおける理想的形態のバツフルの断面図、第２
図はドーム型スピーカにおける通常の使用状態に
おけるバツフルの断面図、第３図は平面振動板を
用いたスピーカにおけるバツフルの断面図、第４
図Ａ，Ｂは周波数特性及び指向特性の比較特性図
であり、第４図Ａは本考案に係るバツフルの特性
図、第４図Ｂは従来のバツフルの特性図である。
第５図は従来のスピーカのバツフルを示す断面図
である。
１……バツフル全体、２……開口部、２ａ……
口縁、３……ドーム状振動板、３ａ……振動板外
周縁、４……平板状振動板。
1 to 4 show embodiments of the speaker baffle according to the present invention, and FIG.
The figure is a cross-sectional view of the buttful in a dome-shaped speaker under normal use, Figure 3 is a cross-sectional view of the buttful in a speaker using a flat diaphragm, and Figure 4 is a cross-sectional view of the buttful in a speaker using a flat diaphragm.
Figures A and B are comparative characteristic diagrams of frequency characteristics and directivity characteristics, FIG. 4A is a characteristic diagram of the Buzzful according to the present invention, and FIG. 4B is a characteristic diagram of the conventional Batsuful.
FIG. 5 is a cross-sectional view showing the baffle of a conventional speaker. 1... Whole body, 2... Opening, 2a...
Mouth rim, 3... Dome-shaped diaphragm, 3a... Diaphragm outer periphery, 4... Flat diaphragm.
Claims (1)
された開口部の口縁から外周方向に至る表面形状
がホーン状に形成され、その曲率は、振動板の中
心軸上の任意の点を中心として該中心から振動板
の外周縁に至る開き角と上記中心から振動板外周
縁までの距離とをそれぞれ基準として、上記中心
からバツフルの外周面の任意の点に至る開き角が
上記中心から上記任意の点までの距離と上記基準
距離との距離差に応じて指数関数的に増加するよ
うな値に設定されていることを特徴とするスピー
カのバツフル。 In a speaker's buttful, the surface shape from the edge of the opening formed in the buttfull to the outer circumferential direction is formed into a horn shape, and the curvature is such that vibrations from the center center around an arbitrary point on the central axis of the diaphragm. Based on the opening angle to the outer peripheral edge of the plate and the distance from the center to the outer peripheral edge of the diaphragm, the opening angle from the center to any point on the outer peripheral surface of the diaphragm is the distance from the center to the arbitrary point. A loudspeaker set to a value that increases exponentially according to the distance difference between the distance and the reference distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986166506U JPH0537595Y2 (en) | 1986-10-31 | 1986-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986166506U JPH0537595Y2 (en) | 1986-10-31 | 1986-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6372989U JPS6372989U (en) | 1988-05-16 |
| JPH0537595Y2 true JPH0537595Y2 (en) | 1993-09-22 |
Family
ID=31097548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986166506U Expired - Lifetime JPH0537595Y2 (en) | 1986-10-31 | 1986-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0537595Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58169787U (en) * | 1982-05-08 | 1983-11-12 | ソニー株式会社 | speaker cabinet |
| JPS6072087U (en) * | 1983-10-21 | 1985-05-21 | 山水電気株式会社 | speaker device |
-
1986
- 1986-10-31 JP JP1986166506U patent/JPH0537595Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6372989U (en) | 1988-05-16 |
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