JPH0720720Y2 - Acoustic panel - Google Patents
Acoustic panelInfo
- Publication number
- JPH0720720Y2 JPH0720720Y2 JP8459987U JP8459987U JPH0720720Y2 JP H0720720 Y2 JPH0720720 Y2 JP H0720720Y2 JP 8459987 U JP8459987 U JP 8459987U JP 8459987 U JP8459987 U JP 8459987U JP H0720720 Y2 JPH0720720 Y2 JP H0720720Y2
- Authority
- JP
- Japan
- Prior art keywords
- adjusting member
- cavity
- sound
- tip
- panel
- 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
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は、音響パネルに関するものである。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an acoustic panel.
「従来の技術」 従来、音響効果を上げるのに吸音・反射を改善する目的
で天井や壁面などの形状を変更したり、あるいは種々の
吸音材を用いたりしていた。"Conventional Technology" Conventionally, in order to improve sound absorption and reflection, the shape of the ceiling and wall surfaces has been changed or various sound absorbing materials have been used in order to improve sound effects.
「考案が解決しようとする問題点」 音響効果を上げるのに天井や壁面などの形状を変更した
り、種々の吸音材を用いたりしているが、これ等は一般
家庭用の音響装置としては高価であり、また、素人によ
る施工では設計ミスによる失敗を多く、専門家の設計に
よる援助が必要であった。本考案は、一般家庭でも音響
効果を簡単に調整し、音響効果を上げる音響パネルを提
供することを目的とする。"Problems to be solved by the invention" In order to improve the acoustic effect, the shapes of the ceiling and wall surfaces are changed and various sound absorbing materials are used, but these are not available as sound devices for general household use. It was expensive, and construction by amateurs often failed due to design mistakes, requiring expert design assistance. It is an object of the present invention to provide an acoustic panel that easily adjusts the acoustic effect even in a general home and enhances the acoustic effect.
「考案が解決しようとする手段」 そこで、本考案は上記の事情に鑑み、複数の凹部と該凹
部に内嵌した調節部材とが設けられ、前記調節部材は前
記凹部の開口方向に進退可能に設けられ、前記調節部材
と前記凹部とにより形成される空洞の容積を変化させる
ことにより共鳴周波数を変えることを特徴とする音響パ
ネルである。[Means to be Solved by the Invention] In view of the above circumstances, the present invention is provided with a plurality of recesses and an adjusting member fitted in the recesses, and the adjusting member is capable of advancing and retracting in the opening direction of the recesses. The acoustic panel is characterized in that a resonance frequency is changed by changing a volume of a cavity provided and formed by the adjusting member and the recess.
「作用」 パネルの凹部内で調節部材を進退させ所要の共鳴周波数
の音を吸音させる。"Action" The adjustment member is moved back and forth in the recess of the panel to absorb the sound of the required resonance frequency.
「実施例」 吸音構造としては、低音域の吸音はその材料の表面が軟
らかくとも硬くともあまり関係がなく、板材がしっかり
していれば反射しフレキシブルで曲がりやすければ音響
エネルギーが熱交換されて吸音される。実際の吸音構造
としては、遮音壁に接触させてロックウールを設け5mm
程度の厚さのベニヤ板で保持させたものなどがある。ま
た、中・高温域の吸音構造としては、表面が軟らかくグ
ラスウール、綿のような繊維のものがあると、その中に
音波が入り込むときの粘性抵抗によって入射音のエネル
ギーが消費されて吸音作用が生じる。"Example" As a sound absorption structure, sound absorption in the low range does not matter much whether the surface of the material is soft or hard, and if the plate material is solid it will be reflective and flexible, and if it is flexible it will absorb sound energy by heat exchange and absorb sound. To be done. As an actual sound absorbing structure, rock wool is provided in contact with the sound insulation wall and is 5 mm
Some are held by a veneer plate with a certain thickness. Moreover, if the surface of the sound absorbing structure in the middle and high temperature range is soft and has fibers such as glass wool and cotton, the energy of the incident sound is consumed due to the viscous resistance when sound waves enter the inside and the sound absorbing function is Occurs.
以上のほかに開口が狭い首部空洞と広い奥部空洞とを有
する瓶状体に音波を受け入れるレゾネータを利用した方
法があり簡単に吸音効果を得ることができる。このレゾ
ネータはスタジオや能楽堂の舞台の床下に置いたり、教
会の壁に埋め込まれて使われている。これは音波がこの
レゾネータに入射したときの首部空洞の空気が奥部空洞
内の空気をバネとしてピストン状に激しく振動し、首部
空洞における空気の摩擦粘性抵抗によって吸音される
（ヘルムホルツの原理）。第10図に示すように、レゾネ
ータの首部空洞の直径をdcm、断面積をＳcm2、首部空洞
の長さをlcm、奥部空洞の容積をＶcm3、音速をｃ＝331.
5＋0.61tm/sec、ｔは室温℃とすると、共鳴周波数ｆ
は、 となる。すなわち、吸音される音の周波数ｆは、首部空
洞の断面積Ｓ、直径ｄ、長さｌおよび奥部空洞の容積Ｖ
に関係する。In addition to the above, there is a method of using a resonator that receives a sound wave in a bottle-shaped body having a neck cavity with a narrow opening and a back cavity with a wide opening, and a sound absorbing effect can be easily obtained. This resonator is used under the floor of the stage of a studio or a Noh theater, or embedded in the church wall. This is because the air in the neck cavity when a sound wave is incident on this resonator vibrates violently like a piston using the air in the back cavity as a spring, and is absorbed by the frictional viscous resistance of the air in the neck cavity (Helmholtz principle). As shown in FIG. 10, the diameter of the neck cavity of the resonator is dcm, the cross-sectional area is Scm 2 , the length of the neck cavity is lcm, the volume of the inner cavity is Vcm 3 , and the speed of sound is c = 331.
5 + 0.61tm / sec, t is room temperature ℃, resonance frequency f
Is Becomes That is, the frequency f of the sound absorbed is determined by the cross-sectional area S, the diameter d, the length l of the neck cavity and the volume V of the back cavity.
Related to.
本考案は、このレゾネータの原理を応用し音波の共鳴周
波数を容易に変更可能としたものである。The present invention makes it possible to easily change the resonance frequency of a sound wave by applying the principle of this resonator.
第１図に示すように、パネル１に複数個の凹部２…を形
成し、該凹部２…に調節部材３…を遊嵌状に内嵌めし進
退可能に設ける。As shown in FIG. 1, a plurality of recesses 2 ... Is formed in the panel 1, and adjusting members 3 ... Are fitted in the recesses 2 ...
第２図に示すように、先端が狭幅のテーパ状に形成した
先端部材12とこの先端部材12からネジ棒11と突設し、そ
のネジ棒11を凹部２下方に設けたネジ孔14に螺着してネ
ジ込みあるいはネジ戻してパネル１の凹部２に対して進
退させることにより首部空洞の長さｌ、断面積Ｓ、直径
ｄおよび奥部空洞の容積Ｖを変化させ共鳴周波数ｆを変
える。調節部材３は、先端部材12の先端が狭幅のテーパ
状に形成してあるので調節部材３をネジ込みあるいはネ
ジ戻すと、首部空洞の長さｌが変化すると共に、首部空
洞の断面積Ｓ、直径ｄが変化し、奥部空洞の容積Ｖが変
化する。第２図の左側の状態から調節部材３をネジ戻す
と右側に示す調節部材３の状態となり、首部空洞の長さ
ｌが変化すると共に、首部空洞の断面積Ｓ、直径ｄが変
化し、奥部空洞の容積Ｖも変化して共鳴周波数ｆが変化
する。As shown in FIG. 2, a tip member 12 having a narrow tapered end and a threaded rod 11 projecting from this tip member 12 are provided in a threaded hole 14 provided below the recess 2. By screwing and screwing or unscrewing it back and forth with respect to the concave portion 2 of the panel 1, the length 1 of the neck cavity, the cross-sectional area S, the diameter d and the volume V of the back cavity are changed to change the resonance frequency f. . Since the tip of the tip member 12 of the adjusting member 3 is formed in a tapered shape with a narrow width, when the adjusting member 3 is screwed in or unscrewed, the length 1 of the neck cavity changes and the cross-sectional area S of the neck cavity is changed. , The diameter d changes, and the volume V of the inner cavity changes. When the adjusting member 3 is unscrewed from the state on the left side of FIG. 2, the state of the adjusting member 3 shown on the right side is obtained, the length l of the neck cavity changes, and the cross-sectional area S and the diameter d of the neck cavity change, so that The volume V of the partial cavity also changes and the resonance frequency f changes.
第２図の左側の調節部材３の状態をＡ、右側の調節部材
３の状態をＢとして第３図に示すようにＡ状態あるいは
Ｂ状態の調節部材３をパネル１に任意に配置できる。Assuming that the state of the adjusting member 3 on the left side of FIG. 2 is A and the state of the adjusting member 3 on the right side is B, the adjusting member 3 in the A state or the B state can be arbitrarily arranged on the panel 1 as shown in FIG.
第４図には先端部材12の先端が広幅のテーパ状に形成し
た調節部材３を凹部２に遊嵌状に内嵌めしそのネジ棒11
をネジ孔14に螺着したものである。図の左側の調節部材
３はその先端部材12の基端面と凹部２の底面と僅かな隙
間を保持させ、中央部の調節部材３の先端部材12の先端
面はパネル２表面より突出させ、右側の調節部材３の先
端部材12の先端面はパネル２表面と同一面にしたもの
で、各々音響特性が異なる。調節部材３の先端部材12の
先端面は残響、定在波などの改善に、奥部空洞は周波
数、定在波などの改善に使用できる。In FIG. 4, the adjusting member 3 in which the front end of the front end member 12 is formed in a wide taper shape is loosely fitted in the recess 2 and the threaded rod 11 thereof is inserted.
Is screwed into the screw hole 14. The adjusting member 3 on the left side of the figure maintains a slight gap between the base end surface of the tip member 12 and the bottom surface of the recess 2, and the tip end surface of the tip member 12 of the adjusting member 3 in the central portion is projected from the surface of the panel 2 The tip end surface of the tip end member 12 of the adjusting member 3 is the same as the surface of the panel 2 and has different acoustic characteristics. The tip surface of the tip member 12 of the adjusting member 3 can be used to improve reverberation and standing waves, and the inner cavity can be used to improve frequency and standing waves.
調節部材３および凹部２の形状に変化させて、種々の共
鳴周波数ｆが得られる。調節部材３の先端部材12の形状
は第５図の第5a図に示すように先端が球状の半球状のも
の、第5b図に示すように先端面が基端面より大径で両端
面は凹んだ円弧曲面で連なったもの、第5c図に示すよう
に円柱状のもの、第5d図に示すように基端が球状の半球
状のもの、第5e図に示すように先端面が基端面より小径
で両端面は凹んだ円弧曲面で連なったものなどがある。
凹部２の形状としては第６図に示すように左側の半球状
空洞のもの、中央の先端が広幅のテーパ状空洞のもの、
右側の円柱状空洞のものなどがある。これらの調節部材
３と凹部２との組み合わせにより、種々の音響特性が得
られる。Various resonance frequencies f can be obtained by changing the shapes of the adjusting member 3 and the recess 2. The tip member 12 of the adjusting member 3 has a hemispherical shape with a spherical tip as shown in Fig. 5a of Fig. 5, and as shown in Fig. 5b, the tip face has a larger diameter than the base face and both end faces are concave. A series of elliptic curved surfaces, a cylindrical shape as shown in FIG. 5c, a hemispherical shape with a spherical base end as shown in FIG. 5d, and a distal end surface as shown in FIG. There is a small diameter with both end surfaces connected by concave curved surfaces.
The shape of the recess 2 is a hemispherical cavity on the left side as shown in FIG. 6, a tapered cavity with a wide central tip,
There is a cylindrical cavity on the right. Various acoustic characteristics can be obtained by combining the adjusting member 3 and the recess 2.
また、第７図に示すように調節部材３の先端部材12の中
央部を極端にくぼませたものを使用することもできる。Further, as shown in FIG. 7, it is also possible to use one in which the central portion of the tip member 12 of the adjusting member 3 is extremely recessed.
さらに、第８図に示すように調節部材３は凹部２の内周
面に刻設したネジ山21にナット22を介在させて進退自在
とし、空洞中にナット22が介在しているので空洞中の空
気の流れが変わり、また、調節部材３の先端側と基端側
との材質や形状を変えることにより反射・吸音などの音
響特性を変えることができる。Further, as shown in FIG. 8, the adjusting member 3 can be moved back and forth by interposing a nut 22 in a screw thread 21 engraved on the inner peripheral surface of the concave portion 2, and the nut 22 is present in the cavity, so that By changing the flow of air and changing the material and shape of the tip end side and the base end side of the adjusting member 3, the acoustic characteristics such as reflection and sound absorption can be changed.
第９図に示すように調節部材３を凹部２に連なる段状孔
31の所要段位置に係合棒32先端の係合片33を係合させる
ことにより段階的に進退させることができる。As shown in FIG. 9, the adjusting member 3 is a stepped hole that is continuous with the recess 2.
By engaging the engaging piece 33 at the tip of the engaging rod 32 at the required step position of 31, it is possible to move forward and backward in stages.
本考案での取付棒には、ネジ棒11と係合棒32が含まれ
る。The mounting rod of the present invention includes the screw rod 11 and the engaging rod 32.
「考案の効果」 本考案は、上述のように、複数の凹部と該凹部に内嵌し
た調節部材とが設けられ、前記調節部材は前記凹部の開
口方向に進退可能に設けられ、前記調節部材と前記凹部
とにより形成される空洞の容積を変化させることにより
共鳴周波数を変える音響パネルであるので、音響効果を
上げるのに天井や壁面の形状を変更したり、種々の吸音
材を用いたりすることなく、一般の家庭でも簡単に音響
効果を上げることができる。[Advantages of the Invention] As described above, the present invention is provided with a plurality of recesses and an adjusting member fitted in the recesses, and the adjusting member is provided so as to be movable back and forth in the opening direction of the recesses. Since it is an acoustic panel that changes the resonance frequency by changing the volume of the cavity formed by the concave portion and the concave portion, the shape of the ceiling or wall surface may be changed or various sound absorbing materials may be used to enhance the acoustic effect. Without it, the sound effect can be easily enhanced even in a general home.
第１図は本考案の具体的一実施例の音響パネルの斜視
図、第２図は音響パネルの縦断面図、第３図はパネルに
種々の音響特性を有する調節部材を配置した状態を示す
平面図、第４図は音響特性を説明する音響パネルの縦断
面図、第５図は調節部材の種々の形状を示す正面図、第
６図は凹部の種々の形状を説明するパネルの縦断面図、
第７図は他の例の音響用パネルの縦断面図、第８図はさ
らに別の音響パネルの縦断面図、第９図は別の音響用パ
ネルの縦断面図、第10図はレゾネータ（ヘルムホルツ共
鳴箱）の縦断面図である。 １……パネル、12……先端部材 ２……凹部、３……調節部材FIG. 1 is a perspective view of an acoustic panel according to a specific embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the acoustic panel, and FIG. 3 shows a state in which adjusting members having various acoustic characteristics are arranged on the panel. A plan view, FIG. 4 is a longitudinal sectional view of an acoustic panel for explaining acoustic characteristics, FIG. 5 is a front view showing various shapes of an adjusting member, and FIG. 6 is a longitudinal sectional view of a panel for explaining various shapes of recesses. Figure,
FIG. 7 is a longitudinal sectional view of an acoustic panel of another example, FIG. 8 is a longitudinal sectional view of yet another acoustic panel, FIG. 9 is a longitudinal sectional view of another acoustic panel, and FIG. 10 is a resonator ( It is a longitudinal cross-sectional view of a Helmholtz resonance box). 1 ... Panel, 12 ... Tip member 2 ... Recess, 3 ... Adjusting member
Claims (1)
が設けられ、前記調節部材は前記凹部の開口方向に進退
可能に設けられ、前記調節部材と前記凹部とにより形成
される空洞の容積を変化させることにより共鳴周波数を
変えることを特徴とする音響パネル。1. A cavity formed by a plurality of recesses and an adjusting member fitted in the recesses, wherein the adjusting member is provided so as to be movable back and forth in the opening direction of the recess, and formed by the adjusting member and the recesses. An acoustic panel characterized in that the resonance frequency is changed by changing the volume of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8459987U JPH0720720Y2 (en) | 1987-05-29 | 1987-05-29 | Acoustic panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8459987U JPH0720720Y2 (en) | 1987-05-29 | 1987-05-29 | Acoustic panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63195398U JPS63195398U (en) | 1988-12-15 |
| JPH0720720Y2 true JPH0720720Y2 (en) | 1995-05-15 |
Family
ID=30939242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8459987U Expired - Lifetime JPH0720720Y2 (en) | 1987-05-29 | 1987-05-29 | Acoustic panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720720Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6516150B2 (en) | 2014-04-28 | 2019-05-22 | 株式会社リコー | Sound absorbing device, electronic device and image forming apparatus |
-
1987
- 1987-05-29 JP JP8459987U patent/JPH0720720Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63195398U (en) | 1988-12-15 |
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