JP3121126B2 - Soundproof door - Google Patents
Soundproof doorInfo
- Publication number
- JP3121126B2 JP3121126B2 JP04182590A JP18259092A JP3121126B2 JP 3121126 B2 JP3121126 B2 JP 3121126B2 JP 04182590 A JP04182590 A JP 04182590A JP 18259092 A JP18259092 A JP 18259092A JP 3121126 B2 JP3121126 B2 JP 3121126B2
- Authority
- JP
- Japan
- Prior art keywords
- space
- soundproof door
- frame
- vertical
- frame material
- 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 - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】この発明は、一部が透視可能にな
っている防音戸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof door which is partially visible.
【０００２】[0002]
【従来の技術】ＡＶルームやピアノ練習室等ではデザイ
ン面などから、また、カラオケルーム等では青少年非行
防止のための条例等の法的規制により、内部が透視でき
るドアが使われている。普通、ドアに透明ガラスが嵌め
込まれ室内外の透視が出来るようになっている。一方、
ＡＶルームやピアノ練習室あるいはカラオケルームで
は、大量の騒音が発生するため、ドアには遮音性能の高
い防音ドアが使われる。2. Description of the Related Art In an AV room, a piano practice room or the like, a door through which the inside can be seen is used in a karaoke room or the like due to a design or the like. Normally, transparent glass is fitted into the door so that the interior and exterior can be seen through. on the other hand,
In an AV room, a piano practice room, or a karaoke room, a large amount of noise is generated, so a soundproof door having high sound insulation performance is used for the door.
【０００３】この防音ドアは、框材とその中に配置され
た中枠材からなる骨組材を備え、中枠材には透明板が嵌
められ、框材と中枠材の間の空間は両面が表面板で塞が
れている構成となっている。また、普通、表面板の間の
空間には吸音材が充填されていたり、さらには、周囲に
沿って外枠が取り付けられたりもしている。この防音ド
アは、遮音性能が高周波域では十分であるが、低周波域
では十分と言えない。一般的に、低周波域の音は減衰し
難くて低周波域の遮音性能を簡単に向上させることが難
しいとされている。This soundproof door has a frame member composed of a frame member and a middle frame member arranged therein, a transparent plate is fitted into the middle frame member, and the space between the frame member and the middle frame member is on both sides. Are closed by a surface plate. Further, usually, the space between the surface plates is filled with a sound absorbing material, and further, an outer frame is attached along the periphery. This soundproof door has sufficient sound insulation performance in a high frequency range, but is not sufficient in a low frequency range. Generally, it is considered that sound in a low frequency range is difficult to attenuate, and it is difficult to easily improve sound insulation performance in a low frequency range.
【０００４】[0004]
【発明が解決しようとする課題】この発明は、上記事情
に鑑み、低周波域で優れた遮音性能を有する防音戸を提
供することを課題とする。SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a soundproof door having excellent sound insulation performance in a low frequency range.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するた
め、この発明にかかる防音戸は、少なくとも四周に配置
された框材とこれらの框材で囲まれた空間の中に配置さ
れた中枠材からなる骨組材を備え、前記中枠材で囲まれ
た空間には透明板が嵌められ、前記框材と中枠材の間の
空間の両面が表面板で塞がれており、この塞がれた空間
内には前記２枚の表面板に共に密接するようにして桟材
が組み込まれていて、桟材で区切られた小空間を塞ぐ仮
想的な小表面板の固有曲げ振動周波数が１ｋHz以上であ
る構成となっている。In order to solve the above-mentioned problems, a soundproof door according to the present invention comprises a frame member arranged at least on four sides and a middle frame arranged in a space surrounded by these frame members. A transparent plate is fitted in a space surrounded by the middle frame material, and both surfaces of the space between the frame material and the middle frame material are closed by a surface plate. A crosspiece is incorporated in the separated space so as to be in close contact with the two surface plates, and a temporary space for closing a small space separated by the crosspiece is provided.
The natural bending vibration frequency of the ideal small surface plate is 1 kHz or more .
【０００６】以下、この発明を、具体的に説明する。こ
の発明の防音戸では、骨組材における中枠材の間に透明
板が設けられていて、戸を開かなくても透視できるので
あるが、使われる透明板としては、ガラス板、例えば、
６ｍｍの厚みのガラス板２枚の間に透明粘弾性膜を挟み
込んだ合わせガラス板が挙げられる。勿論、合わせガラ
スに限らず、１枚もののガラス板や透明樹脂板などであ
ってもよい。また、表面板としても、薄手の塩化ビニル
樹脂シートに厚手の合板、さらに、その上に化粧合板を
積層した３層構造の複合板が挙げられるが、１枚ものの
単板など他のものであってもよい。Hereinafter, the present invention will be specifically described. In the soundproof door of the present invention, a transparent plate is provided between the middle frame members of the framing material, and it is possible to see through without opening the door, but as the transparent plate used, a glass plate, for example,
A laminated glass plate in which a transparent viscoelastic film is sandwiched between two glass plates having a thickness of 6 mm is exemplified. Of course, the present invention is not limited to laminated glass and may be a single glass plate or a transparent resin plate. Further, as the surface plate, a three-layer composite plate in which a thick plywood is laminated on a thin vinyl chloride resin sheet and a decorative plywood is further laminated thereon, but other ones such as a single veneer may be used. You may.
【０００７】骨組材を構成する框材や中枠材あるいは桟
材は、木製やプラスチック製のものなどのようにヤング
率が１０9 Ｎ／ｍ2 程度あるものが適当である。普通、
表面板は、桟材だけでなく框材、中枠材とも密接状態に
ある。通常、表面板は、桟材や框材および中枠材と接着
剤で接着固定されている。この発明の防音戸は、室の出
入り口に設けられる防音ドアが典型的な形態として挙げ
られるのであるが、これ以外に、例えば、引き戸形式の
戸の形態のものも挙げられる。[0007] The frame material, the middle frame material or the crosspiece constituting the frame material is suitably a material having a Young's modulus of about 10 9 N / m 2 , such as a wooden or plastic material. usually,
The face plate is in close contact not only with the crosspiece but also with the frame material and the middle frame material. Usually, the surface plate is bonded and fixed to the crosspiece, the frame material, and the middle frame material with an adhesive. A typical example of the soundproof door of the present invention is a soundproof door provided at a doorway of a room. In addition, for example, a soundproof door in the form of a sliding door may also be used.
【０００８】この発明の防音戸の大きさの一例を挙げれ
ば、外寸法が、縦：約２０００ｍｍ程度、横：約７５０
ｍｍ程度、総厚み：約５０ｍｍ程度であって、透明板の
寸法が縦：約１５００ｍｍ程度、横：約２５０ｍｍ程度
といったところである。As an example of the size of the soundproof door of the present invention, the outer dimensions are about 2000 mm in length and about 750 in width.
mm, the total thickness is about 50 mm, and the dimensions of the transparent plate are about 1500 mm in length and about 250 mm in width.
【０００９】[0009]
【作用】この発明の防音戸は、２枚の表面板で塞がれて
いる骨組材の空間内には両表面板に共に密接するように
して桟材が組み込まれており、これにより、表面板にお
ける固有曲げ振動周波数が高い方に移行する。表面板の
固有曲げ振動周波数では共鳴透過が起こるため、この周
波数では遮音性能が低いのであるが、桟材の組み込みで
固有曲げ振動周波数が高い方に移行した後の低周波域で
は共鳴透過が起こらなくなる結果、この発明の防音戸で
は、低周波域の遮音性能が向上するようになるのであ
る。この点に関して、以下により詳しく説明する。According to the soundproof door of the present invention, the crosspiece is incorporated in the space of the frame material closed by the two face plates so as to be in close contact with both the face plates. The natural bending vibration frequency of the face plate shifts to a higher one. Since resonance transmission occurs at the natural bending vibration frequency of the surface plate, the sound insulation performance is low at this frequency, but resonance transmission occurs in the low frequency range after the natural bending vibration frequency has shifted to the higher one by incorporating the crosspiece. As a result, in the soundproof door of the present invention, the sound insulation performance in the low frequency range is improved. This will be described in more detail below.
【００１０】平面形状が方形の表面板を周辺で単純支持
した場合、固有曲げ振動周波数は、次の数式に従う。In the case where a flat surface plate is simply supported on the periphery, the natural bending vibration frequency follows the following equation.
【００１１】[0011]
【数１】 Ｄ：板の曲げ剛性（Ｎ・ｍ） ｔ：表面板の厚み（ｍ） ρ：表面板の密度（ｋｇ／ｍ3 ） ａ，ｂ：表面板の縦横長（ｍ） ｎ，ｍ：任意の整数 上記の数式より、表面板のａ，ｂが小さくなれば表面板
の固有曲げ振動周波数が高い方に移行することが分か
る。一方、防音戸の表面板の固有曲げ振動は、骨組材の
框材や中枠材、桟材の間の各空間がそれぞれ小さな表面
板で塞がれたものとして扱える。表面板が、框材や中枠
材、桟材のところで接着等により固定され振動は各空間
ごとに独立して起こると見做すことが出来るからであ
る。したがって、表面板の固有曲げ振動周波数を考える
場合は、各空間の縦・横の寸法が上の数式のａ，ｂにな
るとして扱えばよく、桟材が組み込まれた分、空間の縦
・横の寸法がそれまでより小さくなり、その結果、固有
曲げ振動周波数が高い方に移行するのである。(Equation 1) D: Bending rigidity of plate (N · m) t: Thickness of surface plate (m) ρ: Density of surface plate (kg / m 3 ) a, b: Vertical and horizontal length of surface plate (m) n, m: Arbitrary Integer From the above equations, it can be seen that the smaller the a and b of the surface plate, the higher the natural bending vibration frequency of the surface plate shifts to a higher one. On the other hand, the natural bending vibration of the surface plate of the soundproof door can be treated as if each space between the frame material, the intermediate frame material, and the crosspiece is closed with a small surface plate. This is because the surface plate is fixed by bonding or the like at the frame material, the middle frame material, and the crosspiece, and the vibration can be considered to occur independently for each space. Therefore, when considering the natural bending vibration frequency of the surface plate, it is sufficient to treat the vertical and horizontal dimensions of each space as a and b in the above equation. Is smaller than before, so that the natural bending vibration frequency shifts to a higher one.
【００１２】上記の数式から分かるように、曲げ剛性Ｄ
や表面板の厚みｔあるいは表面板の密度ρの変更によ
り、固有曲げ振動周波数を高くすることも理論上は可能
である。しかしながら、表面板の曲げ剛性Ｄ、厚みｔや
密度ρは大体決まっていて、変更の余地は少ない。これ
に対し、桟材の組み込みにより、曲げ振動周波数を高い
方に移行させる場合は、表面板自体の変更を伴わずにす
むし、桟材自体は表面から見えないため自由に組み込め
る。骨組材への桟材の組み込みは、表面板の間の各空間
に対応する小表面板（仮想小表面板）について考えた時
に、１ｋＨｚ以上（より好ましくは４ｋＨｚ）の固有曲
げ振動周波数になるようにすることが好ましい。出来れ
ば全ての小表面板の固有曲げ振動周波数が１ｋＨｚ以上
（より好ましくは４ｋＨｚ）であるのがよい。なお、こ
の発明の防音戸の場合、普通、上記数式のｎ＝１の時の
固有曲げ振動数だけを考慮すればよい。ｎ＝２以上の時
の固有曲げ振動数は相当に高い周波数で考慮しなくても
よいからである。As can be seen from the above equation, the bending rigidity D
It is theoretically possible to increase the natural bending vibration frequency by changing the thickness t of the surface plate or the density ρ of the surface plate. However, the bending stiffness D, the thickness t, and the density ρ of the surface plate are almost fixed, and there is little room for change. On the other hand, when the bending vibration frequency is shifted to a higher frequency by incorporating the crosspiece, the crosspiece can be freely incorporated because the crosspiece itself is not visible from the surface without changing the surface plate itself. The incorporation of the crosspiece into the framing material is such that the natural bending vibration frequency is 1 kHz or more (more preferably 4 kHz) when considering small surface plates (virtual small surface plates) corresponding to each space between the surface plates. Is preferred. If possible, the natural bending vibration frequency of all the small surface plates should be 1 kHz or more (more preferably, 4 kHz). In the case of the soundproof door of the present invention, it is usually sufficient to consider only the natural bending frequency when n = 1 in the above equation. This is because the natural bending frequency when n = 2 or more need not be considered at a considerably high frequency.
【００１３】勿論、小表面板の全てが１ｋHz以上の固有
曲げ振動周波数である必要はない。１ｋHz未満の固有曲
げ振動周波数である小表面板の占める割合が、表面板の
全面積に対し一定以下（普通１０％以下）であれば、特
に問題ない。小表面板の一つでも固有曲げ振動周波数が
高い方に移行することで、防音戸全体の低周波域での遮
音性能に応分の向上がみられる。Of course, not all of the small surface plates need to have a natural bending vibration frequency of 1 kHz or more. There is no particular problem as long as the ratio of the small surface plate having an intrinsic bending vibration frequency of less than 1 kHz is not more than a certain value (usually 10% or less) with respect to the entire area of the surface plate. By shifting to a higher natural bending vibration frequency even for one of the small surface plates, the sound insulation performance of the entire soundproof door in the low frequency range can be improved accordingly.
【００１４】桟材は空間の縦横辺のうち短い方の辺の間
に渡すように組み込むことが効果的である。例えば、前
記の数式においてｎ＝１，ｍ＝１としておいて、辺の中
央の間に桟材を渡すものとして考えた場合、新たに出来
る空間に対応した小表面板の固有曲げ振動周波数は、上
の数式のａ，ｂのうちの一方を半分にすることで求めら
れるのであるが、ａ，ｂのうち元々短い方を半分にする
方が固有曲げ振動周波数ｆの増加率が大きいことから上
記のことが分かる。普通、骨組材では、縦框材と縦中枠
材の間に比較的面積の大きな縦長空間が出来ているた
め、桟材が縦方向に配置されている組み込み形態とな
る。It is effective to incorporate the crosspiece so as to pass between the shorter sides of the vertical and horizontal sides of the space. For example, when it is assumed that n = 1 and m = 1 in the above equation and a beam is passed between the centers of the sides, the natural bending vibration frequency of the small surface plate corresponding to the newly created space is: It can be obtained by halving one of a and b in the above formula, but halving the shorter one of a and b originally increases the natural bending vibration frequency f because the rate of increase is larger. You can see that. Normally, in a framed material, a vertically long space having a relatively large area is formed between a vertical frame material and a vertical middle frame material, so that the frame material is installed in a vertical direction.
【００１５】[0015]
【実施例】以下、この発明の実施例を、図面を参照しな
がら詳しく説明する。図１は、実施例にかかる防音ドア
の外観を一部を破断してあらわし、図２は、この防音ド
アの上端付近の内部構造をあらわし、図３は骨組材全体
をあらわし、図４は骨組材の縦側面をあらわしている。
図５は骨組材の具体的寸法関係をあらわしている。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a part of the appearance of the soundproof door according to the embodiment, FIG. 2 shows the internal structure near the upper end of the soundproof door, FIG. 3 shows the whole framing material, and FIG. It represents the vertical side of the lumber.
FIG. 5 shows a specific dimensional relationship of the frame members.
【００１６】図１の防音ドア１は、框材２１〜２３と框
材２１〜２３で囲まれた空間の中に配置された中枠材２
４，２５からなる骨組材２を備え、中枠材２４，２５に
は透明板４が嵌められ、框材２１〜２３と中枠材２４，
２５の間の空間の両面が表面板３，３で塞がれている。
また、周囲には外枠５が取り付けられている。透明板４
は６ｍｍの厚みのガラス板２枚の間に透明粘弾性膜を挟
み込んだ合わせガラス板である。表面板３，３は、約３
０ｍｍの間（骨組材２の厚み）だけ隔てて配されてお
り、いずれも、厚み１ｍｍの塩化ビニル樹脂シート１１
に厚み３．８ｍｍの合板１２、さらにその上に厚み２．
７ｍｍの化粧合板１３を積層した３層構造の複合板であ
る。The soundproof door 1 shown in FIG. 1 includes a frame member 21 to 23 and a middle frame member 2 arranged in a space surrounded by the frame members 21 to 23.
A transparent plate 4 is fitted to the middle frame members 24 and 25, and the frame members 21 to 23 and the middle frame members 24 and 25 are provided.
Both surfaces of the space between 25 are closed by the surface plates 3 and 3.
An outer frame 5 is attached to the periphery. Transparent plate 4
Is a laminated glass plate in which a transparent viscoelastic film is sandwiched between two glass plates having a thickness of 6 mm. The surface plates 3 are approximately 3
0 mm (thickness of the frame material 2), and each of them is a vinyl chloride resin sheet 11 having a thickness of 1 mm.
Plywood 12 having a thickness of 3.8 mm, and a plywood 12 having a thickness of 2.
This is a composite plate having a three-layer structure in which 7 mm decorative plywood 13 is laminated.
【００１７】一方、骨組材２では２本の縦中枠材２４，
２４が上下の框材２１，２２の間に渡されていて、中央
および左右の３つの縦長空間が出来ており、中央の縦長
空間は横中枠材２５で仕切られており、これらの中枠材
２４，２５に透明板４が嵌められている。一方、左右の
縦長空間では、中間には縦框材２３と縦中枠材２４に渡
された横木材２８により区画形成された把手機構設置用
枠が設けられている。On the other hand, in the frame member 2, two vertical middle frame members 24,
24 is passed between the upper and lower frame members 21 and 22 to form three vertically long spaces at the center and left and right. The vertically long space at the center is partitioned by a horizontal middle frame material 25, and these middle frames are formed. The transparent plate 4 is fitted to the members 24 and 25. On the other hand, in the left and right vertical space, a handle mechanism installation frame partitioned by a horizontal timber 28 passed between the vertical frame member 23 and the vertical middle frame member 24 is provided in the middle.
【００１８】そして、把手機構設置用枠の上下に出来た
小縦長空間には、両表面板３，３に密接している縦桟材
２７が横木材２８と上下の框材２１，２２の間に渡され
る形で組み込まれている。縦桟材２７は小縦長空間の短
い辺の間に渡されているのである。一方、中央の縦長空
間でも框材２１と横中枠材２５の間に空間が出来てお
り、面積の大きな下側の空間には遮音性能向上用の縦桟
材２７が組み込まれている。なお、縦框材２３の把手機
構設置用枠には止め金出入り用の穴（図示省略）が明け
られ、そのままでは穴から戸の内部が覗けてしまうた
め、目隠し材２９で戸の内部が覗けないようにしてい
る。表面板３，３の間に出来る空間は、極力、図２にみ
るように、グラスウールなどの吸音材１５を充填するよ
うにしている。勿論、全ての空隙に吸音材１５を充填す
る必要はない。この実施例の場合、把手機構設置用枠の
空隙Ｓには吸音材１５が充填されていない。In the small vertical space formed above and below the handle mechanism installation frame, a vertical bar 27 closely contacting the front and rear panels 3, 3 is provided between the horizontal timber 28 and the upper and lower frame members 21, 22. It is incorporated in the form passed to. The vertical beam 27 is passed between the short sides of the small vertical space. On the other hand, a space is also formed between the frame member 21 and the horizontal middle frame member 25 in the central vertical space, and a vertical bar 27 for improving sound insulation performance is incorporated in the lower space having a large area. In addition, a hole (not shown) for a stopper is provided in the handle frame installation frame of the vertical frame member 23, and the inside of the door can be seen through the hole as it is. I try not to. As shown in FIG. 2, a space formed between the surface plates 3 and 3 is filled with a sound absorbing material 15 such as glass wool as much as possible. Of course, it is not necessary to fill all the gaps with the sound absorbing material 15. In the case of this embodiment, the sound absorbing material 15 is not filled in the gap S of the handle mechanism setting frame.
【００１９】なお、透明板４の方は、上記のように比較
的厚めの合わせガラス板など低周波域で相応の遮音性能
に優れたものが使われるので、この部分は桟材がなくて
も問題はないが、透明板が、２枚の透明材を空間を隔て
て対向配置してなるものの場合、その間に桟材（例え
ば、透明の桟材）を組み込むようにして遮音性能を高め
るようにしてもよい。The transparent plate 4 is made of a material such as a comparatively thick laminated glass plate having excellent sound insulation performance in a low frequency range as described above. Although there is no problem, in the case where the transparent plate is formed by arranging two transparent materials to face each other with a space therebetween, a crosspiece (for example, a transparent crosspiece) is incorporated between them so as to enhance the sound insulation performance. You may.
【００２０】また、図９に、縦桟材２７がない以外は同
じ構成・寸法関係の骨組材をあらわす。図９の骨組材に
おける空間Ａ〜Ｃに対応する小表面板の（１次の）固有
曲げ振動周波数は、以下の通りである。 空間Ａ ｎ＝１，ｍ＝１，５１６．３Ｈｚ ，ｎ＝１，ｍ＝２，５３４．６ Ｈｚ ｎ＝１，ｍ＝３，５６７．３Ｈｚ， ，ｎ＝１，ｍ＝４，７７０．７ Ｈｚ 空間Ｂ ｎ＝１，ｍ＝１，５２２．９Ｈｚ ，ｎ＝１，ｍ＝２，５６２．９ Ｈｚ ｎ＝１，ｍ＝３，６３５．７Ｈｚ ，ｎ＝１，ｍ＝４，１０８７． ５Ｈｚ 空間Ｃ ｎ＝１，ｍ＝１，６４６．４Ｈｚ ，ｎ＝１，ｍ＝２，９３０．５ Ｈｚ ｎ＝１，ｍ＝３，１４２１．１Ｈｚ ，ｎ＝１，ｍ＝４，３３６９ ．８Ｈｚ これが、桟材２７を入れ細かく空間Ａ〜Ｃをさらに分割
することにより、固有曲げ振動周波数は、下記のように
高い側に移行する。FIG. 9 shows frame members having the same configuration and dimensional relationship except that there is no vertical cross member 27. The (primary) natural bending vibration frequency of the small surface plate corresponding to the spaces A to C in the framing material of FIG. 9 is as follows. Space A n = 1, m = 1, 516.3 Hz, n = 1, m = 2, 534.6 Hz n = 1, m = 3, 567.3 Hz, n = 1, m = 4,770.7 Hz space B n = 1, m = 1, 522.9 Hz, n = 1, m = 2, 562.9 Hz n = 1, m = 3, 635.7 Hz, n = 1, m = 4,1087. 5 Hz space C n = 1, m = 1, 646.4 Hz, n = 1, m = 2, 930.5 Hz n = 1, m = 3, 1421.1 Hz, n = 1, m = 4,3369. 8 Hz This inserts the crosspiece 27 and finely divides the spaces A to C, whereby the natural bending vibration frequency shifts to a higher side as described below.
【００２１】 空間Ａ ｎ＝１，ｍ＝１, 2431.0Hz ，ｎ＝１，ｍ＝
２，2443.1Hz ｎ＝１，ｍ＝３，2463.7Hz ，ｎ＝１，ｍ＝４，258
0.0Hz 空間Ｂ ｎ＝１，ｍ＝１，2436.4Hz ，ｎ＝１，ｍ＝
２，2464.9Hz ｎ＝１，ｍ＝３，2513.9Hz ，ｎ＝１，ｍ＝４，280
2.9Hz 空間Ｃ ｎ＝１，ｍ＝１，3242.2Hz ，ｎ＝１，ｍ＝
２，5696.0Hz ｎ＝１，ｍ＝３，9682.1Hz ，ｎ＝１，ｍ＝４,1600
4.8Hz 空間Ａ〜Ｃは、桟材２７がないと固有曲げ振動周波数が
１ｋHz未満であるが、桟材２７の組み込みによる分割で
固有曲げ振動周波数が１ｋHzを超すようになる。その結
果、低周波域での遮音性能が向上することは前述のとお
りである。実施例の防音ドアの音響透過損失の対周波数
特性をあらわす図１０のグラフと、縦桟材のない骨組材
を用いた他は同じ構成の防音ドア（参考例）の音響透過
損失の対周波数特性をあらわす図１２のグラフを比べれ
ば、この発明の防音ドアの方が縦桟材２７の組み入れで
低周波域の遮音性能が大きく向上していることがよく分
かる。Space A n = 1, m = 1, 2431.0 Hz, n = 1, m =
2,2443.1 Hz n = 1, m = 3,2463.7 Hz, n = 1, m = 4,258
0.0Hz space B n = 1, m = 1,2436.4Hz, n = 1, m =
2,2464.9Hz n = 1, m = 3,2513.9Hz, n = 1, m = 4,280
2.9Hz space C n = 1, m = 1,3242.2Hz, n = 1, m =
2,5696.0Hz n = 1, m = 3,9682.1Hz, n = 1, m = 4,1600
In the 4.8 Hz spaces A to C, the natural bending vibration frequency is lower than 1 kHz without the crosspiece 27, but the natural bending vibration frequency exceeds 1 kHz due to the division by incorporating the crosspiece 27. As a result, the sound insulation performance in the low frequency range is improved as described above. The graph of FIG. 10 showing the sound transmission loss vs. frequency characteristics of the soundproof door of the example, and the sound transmission loss vs. frequency characteristics of the soundproof door (reference example) having the same configuration except that a frame member without a vertical bar is used. 12 clearly shows that the soundproof door of the present invention has significantly improved sound insulation performance in the low frequency region by incorporating the vertical beam 27.
【００２２】この発明にかかる防音ドアは、上記のもの
に限らない。例えば、骨組材が、図６，７にみるもので
ある他は、上記の実施例と同じ構成のものが、他の実施
例として挙げられる。図６は他の骨組材の全体構成をあ
らわし、図７は他の骨組材の縦側面をあらわし、図８は
他の骨組材の具体的寸法関係をあらわしている。この他
の実施例の骨組材２の場合、左右の縦長空間には各々２
本の縦桟材２７，２７が組み込まれていて、固有曲げ振
動周波数が４ｋHz以上になっており、一方、中央の縦長
空間の下方の框材２１と横中枠材２５の間の空間Ｃには
縦桟材が全く組み入れられておらず、したがって、この
空間Ｃに対応する小表面板は固有曲げ振動周波数は１ｋ
Hzを超すのであるが、表面板の全面積中で占める割合が
僅かなため、防音ドア全体としては、図１１に示す他の
実施例の防音ドアの音響透過損失の対周波数特性にみる
ように、低周波域での遮音性能が向上する。The soundproof door according to the present invention is not limited to the above. For example, another example is the one having the same configuration as that of the above-described embodiment except that the framing material is as shown in FIGS. FIG. 6 shows the overall configuration of another framing material, FIG. 7 shows the longitudinal side surface of the other framing material, and FIG. 8 shows the specific dimensional relationship of the other framing material. In the case of the frame material 2 of the other embodiment, each of the left and right vertical spaces has 2
The vertical beam members 27, 27 are incorporated, and the natural bending vibration frequency is 4 kHz or more. On the other hand, in the space C between the frame member 21 and the horizontal middle frame member 25 below the central vertical space. Does not incorporate any vertical beam, so the small surface plate corresponding to this space C has a natural bending vibration frequency of 1 k
Hz, but the proportion of the total area of the surface plate is so small that the soundproof door as a whole has a sound transmission loss versus frequency characteristic of another example of the soundproof door shown in FIG. In addition, the sound insulation performance in a low frequency range is improved.
【００２３】上記の実施例の場合、縦長空間の短辺に渡
された縦桟材２７が、非常に効果的に固有曲げ振動周波
数を高い方に向上させており、いずれも、ＴＳ−３０以
上の高い遮音性能である。In the case of the above embodiment, the vertical bar 27 extending over the short side of the vertical space very effectively improves the natural bending vibration frequency to a higher one. High sound insulation performance.
【００２４】[0024]
【発明の効果】この発明の防音戸は、２枚の表面板で塞
がれている骨組材の空間内への桟材の組み込みで固有曲
げ振動周波数が高い方に移行した後の低周波域では共鳴
透過が起こらなくなる結果、低周波域の遮音性能が向上
することになる。According to the soundproof door of the present invention, the low frequency range after the natural bending vibration frequency shifts to the higher one by incorporating the crosspiece into the space of the frame member closed by the two surface plates. As a result, resonance transmission does not occur, and as a result, the sound insulation performance in the low frequency range is improved.
【図１】実施例の防音ドアの外観斜視図である。FIG. 1 is an external perspective view of a soundproof door according to an embodiment.
【図２】実施例の防音ドアの上端付近の内部構造をあら
わす部分断面図である。FIG. 2 is a partial cross-sectional view showing an internal structure near an upper end of the soundproof door of the embodiment.
【図３】実施例の防音ドアの骨組材の全体構成をあらわ
す平面図である。FIG. 3 is a plan view showing the overall structure of the frame material of the soundproof door of the embodiment.
【図４】実施例の防音ドアの骨組材の側面図である。FIG. 4 is a side view of a frame material of the soundproof door of the embodiment.
【図５】図３の骨組材の具体的寸法関係を示す平面図で
ある。FIG. 5 is a plan view showing a specific dimensional relationship of the frame material of FIG. 3;
【図６】他の実施例の防音ドアの骨組材の全体構成をあ
らわす平面図である。FIG. 6 is a plan view showing the entire structure of a frame material of a soundproof door according to another embodiment.
【図７】他の実施例の防音ドアの骨組材の側面図であ
る。FIG. 7 is a side view of a frame material of a soundproof door according to another embodiment.
【図８】図６の骨組材の具体的寸法関係を示す平面図で
ある。FIG. 8 is a plan view showing a specific dimensional relationship of the framing material of FIG. 6;
【図９】参考例の防音ドアの骨組材の全体構成をあらわ
す平面図である。FIG. 9 is a plan view showing the overall structure of the frame material of the soundproof door of the reference example.
【図10】実施例の防音ドアの音響透過損失の周波数特性
をあらわすグラフである。FIG. 10 is a graph showing frequency characteristics of sound transmission loss of the soundproof door of the example.
【図11】他の実施例の防音ドアの音響透過損失の周波数
特性をあらわすグラフである。FIG. 11 is a graph showing a frequency characteristic of a sound transmission loss of the soundproof door of another embodiment.
【図12】参考例の防音ドアの音響透過損失の周波数特性
をあらわすグラフである。FIG. 12 is a graph showing a frequency characteristic of a sound transmission loss of the soundproof door of the reference example.
１ 防音ドア（防音戸） ２ 骨組材 ３ 表面板 ４ 透明板 ２１ 框材 ２３ 框材 ２４ 中枠材 ２７ 縦桟材（桟材） DESCRIPTION OF SYMBOLS 1 Soundproof door (soundproof door) 2 Frame material 3 Surface plate 4 Transparent plate 21 Frame material 23 Frame material 24 Medium frame material 27 Vertical beam material (beam material)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平４−123985（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E06B 5/20 E06B 3/70 - 3/88 E04B 1/82 - 1/90 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 4-123985 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) E06B 5/20 E06B 3/70-3 / 88 E04B 1/82-1/90
Claims (2)
らの框材で囲まれた空間の中に配置された中枠材からな
る骨組材を備え、前記中枠材で囲まれた空間には透明板
が嵌められ、前記框材と中枠材の間の空間の両面が表面
板で塞がれており、この塞がれた空間内には前記２枚の
表面板に共に密接するようにして桟材が組み込まれてい
て、桟材で区切られた小空間を塞ぐ仮想的な小表面板の
固有曲げ振動周波数が１ｋHz以上である防音戸。1. A frame comprising at least four frame members and a middle frame member disposed in a space surrounded by these frame members, wherein a space surrounded by the middle frame member is provided. A transparent plate is fitted, and both surfaces of the space between the frame material and the middle frame material are closed by a surface plate. In the closed space, the two surface plates are closely contacted together. With built-in beam
Of the virtual small surface plate that closes the small space
Natural bending vibration frequency is Ru der more than 1kHz soundproof door.
に配置されている請求項１記載の防音戸。2. The soundproof door according to claim 1, wherein the crosspiece is vertically arranged between the vertical frame material and the vertical middle frame material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04182590A JP3121126B2 (en) | 1992-07-09 | 1992-07-09 | Soundproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04182590A JP3121126B2 (en) | 1992-07-09 | 1992-07-09 | Soundproof door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0626284A JPH0626284A (en) | 1994-02-01 |
| JP3121126B2 true JP3121126B2 (en) | 2000-12-25 |
Family
ID=16120952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04182590A Expired - Fee Related JP3121126B2 (en) | 1992-07-09 | 1992-07-09 | Soundproof door |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3121126B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7132582B2 (en) | 2003-05-30 | 2006-11-07 | Council Of Scientific And Industrial Research | Catalytic process for the preparation of isolongifolene |
| US6251064B1 (en) | 1998-12-11 | 2001-06-26 | Enteric Medical Technologies, Inc. | Method for creating valve-like mechanism in natural body passageway |
| US6238335B1 (en) | 1998-12-11 | 2001-05-29 | Enteric Medical Technologies, Inc. | Method for treating gastroesophageal reflux disease and apparatus for use therewith |
-
1992
- 1992-07-09 JP JP04182590A patent/JP3121126B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0626284A (en) | 1994-02-01 |
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