JPH0626284A - Soundproof door - Google Patents
Soundproof doorInfo
- Publication number
- JPH0626284A JPH0626284A JP4182590A JP18259092A JPH0626284A JP H0626284 A JPH0626284 A JP H0626284A JP 4182590 A JP4182590 A JP 4182590A JP 18259092 A JP18259092 A JP 18259092A JP H0626284 A JPH0626284 A JP H0626284A
- Authority
- JP
- Japan
- Prior art keywords
- frame member
- space
- soundproof door
- crosspiece
- bending vibration
- 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.)
- Granted
Links
Landscapes
- Special Wing (AREA)
Abstract
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 transparent.
【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 Doors through which the inside can be seen are used in the AV room, the piano practice room, and the like in view of design, and in the karaoke room and the like due to legal regulations such as regulations for preventing youth delinquency. Normally, transparent glass is fitted into the door so that the inside and outside can be seen through. on the other hand,
Since a large amount of noise is generated in the AV room, the piano practice room, or the karaoke room, a soundproof door with 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 is provided with a frame member composed of a frame member and a middle frame member arranged therein, a transparent plate is fitted to the middle frame member, and the space between the frame member and the middle frame member is double-sided. Is covered with a surface plate. Further, usually, the space between the face 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 the high frequency range, but cannot be said to be sufficient in the low frequency range. Generally, it is said that sound in the low frequency range is difficult to attenuate and it is difficult to easily improve the sound insulation performance in the 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。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 has a frame member arranged on at least four circumferences and an inner frame arranged in a space surrounded by these frame members. A frame member made of wood, a transparent plate is fitted in the space surrounded by the middle frame member, and both sides of the space between the frame member and the middle frame member are closed by surface plates. The crosspiece has a structure in which a crosspiece is incorporated in close contact with the two surface plates.
【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。The present invention will be specifically described below. In the soundproof door of the present invention, the transparent plate is provided between the middle frame members in the frame member, and it is possible to see through without opening the door, but the transparent plate used is a glass plate, for example,
An example is a laminated glass plate in which a transparent viscoelastic film is sandwiched between two glass plates having a thickness of 6 mm. Of course, it is not limited to laminated glass and may be a single glass plate or transparent resin plate. Also, as the surface plate, there is a thin vinyl chloride resin sheet, a thick plywood, and a composite plate having a three-layer structure in which a decorative plywood is laminated thereon. May be.
【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。The frame, the middle frame or the crosspiece constituting the frame member preferably has a Young's modulus of about 10 9 N / m 2 , such as wood and plastic. usually,
The face plate is in close contact not only with the crosspiece but also with the frame and the middle frame. Usually, the surface plate is adhered and fixed to the crosspiece, the frame member and the middle frame member 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, but other than this, for example, a sliding door type door is also available.
【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。To give 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, total thickness: about 50 mm, and the size of the transparent plate is 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。In the soundproof door of the present invention, the crosspiece is incorporated in the space of the frame member closed by the two surface plates so as to be in close contact with both the surface plates. The natural bending vibration frequency of the face plate shifts to the higher side. Resonance transmission occurs at the natural bending vibration frequency of the surface plate, so sound insulation performance is low at this frequency, but resonance transmission occurs at low frequencies after the natural bending vibration frequency shifts to the higher direction by incorporating the crosspiece. As a result, the soundproof door of the present invention has improved sound insulation performance in the low frequency range. This point 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。When a surface plate having a rectangular planar shape is simply supported on the periphery, the natural bending vibration frequency is calculated by 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: Flexural rigidity of plate (Nm) 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: Any Integer From the above formula, it can be seen that the natural bending vibration frequency of the surface plate shifts to the higher side when a and b of the surface plate become smaller. On the other hand, the natural bending vibration of the face plate of the soundproof door can be treated as if each space between the frame member of the frame member, the middle frame member and the cross member is closed by a small face plate. This is because it can be considered that the surface plate is fixed by adhesion or the like at the frame member, the middle frame member, and the crosspiece member, and the vibration occurs independently in 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 equations. Is smaller than before, and as a result, the natural bending vibration frequency shifts to the higher side.
【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、すなわち、１
次の固有曲げ振動数だけを考慮すればよい。ｎ＝２：す
なわち、２次以上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 formula, the bending rigidity D
It is theoretically possible to increase the natural bending vibration frequency by changing the surface plate thickness t or the surface plate density ρ. However, the bending rigidity D, the thickness t, and the density ρ of the surface plate are generally determined, and there is little room for change. On the other hand, when the bending vibration frequency is shifted to the higher side by incorporating the crosspiece, the crosspiece does not have to be changed, and the crosspiece itself is invisible from the surface, and can be freely incorporated. Incorporating the crosspieces into the frame members should be such that the natural bending vibration frequency is 1 kHz or higher (more preferably 4 kHz) when considering small surface plates (virtual small surface plates) corresponding to the spaces between the surface plates. It is preferable. If possible, the natural bending vibration frequency of all the small surface plates should be 1 kHz or higher (more preferably 4 kHz). In the case of the soundproof door of the present invention, normally, n = 1 in the above formula, that is, 1
Only the following natural bending frequencies need be considered. n = 2: That is, the natural bending frequencies of the second and higher orders do not have to 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, it is not necessary that all of the small face plates have a natural bending vibration frequency of 1 kHz or higher. There is no particular problem if the proportion of the small surface plate having a natural bending vibration frequency of less than 1 kHz is below a certain level (usually 10% or less) with respect to the total area of the surface plate. Even with one of the small surface plates, by shifting to a higher natural bending vibration frequency, the sound insulation performance of the entire soundproofing door can be improved considerably in the low frequency range.
【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 install the crosspiece so that it is passed between the shorter sides of the vertical and horizontal sides of the space. For example, when n = 1 and m = 1 in the above formula and considering that the crosspiece is passed between the centers of the sides, the natural bending vibration frequency of the small surface plate corresponding to the newly formed space is It can be obtained by halving one of a and b in the above equation. However, if the originally shorter one of a and b is halved, the increase rate of the natural bending vibration frequency f is large, so I understand. Normally, in the frame member, since a vertically long space having a relatively large area is formed between the vertical frame member and the vertical middle frame member, the cross member is incorporated in the 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 in detail below with reference to the drawings. FIG. 1 shows an external appearance of a soundproof door according to an embodiment by cutting a part thereof, FIG. 2 shows an internal structure near the upper end of the soundproof door, FIG. 3 shows the entire frame material, and FIG. 4 shows a frame structure. Shows the vertical side of the material.
FIG. 5 shows a concrete dimensional relationship of the frame member.
【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 has an inner frame member 2 arranged in a space surrounded by the frame members 21 to 23 and the frame members 21 to 23.
The frame member 2 made of 4, 25 is provided, the transparent plate 4 is fitted to the middle frame members 24, 25, and the frame members 21-23 and the middle frame member 24,
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. Surface plates 3 and 3 are about 3
The vinyl chloride resin sheet 11 having a thickness of 1 mm is arranged at a distance of 0 mm (thickness of the frame member 2).
A plywood 12 having a thickness of 3.8 mm, and a thickness of 2.
It 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, 22 to form three vertically long spaces at the center and left and right, and the vertically long space at the center is partitioned by a horizontal middle frame member 25. The transparent plate 4 is fitted on the materials 24 and 25. On the other hand, in the left and right vertically long spaces, a handle mechanism installation frame is provided in the middle, which is partitioned and formed by the vertical frame member 23 and the horizontal lumber 28 passed over the vertically middle frame member 24.
【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 vertically long spaces formed above and below the frame for installing the handle mechanism, the vertical crosspieces 27 that are in close contact with both surface plates 3 and 3 are provided between the horizontal lumber 28 and the upper and lower frame members 21 and 22. It is incorporated in the form passed to. The vertical crosspiece 27 is passed between the short sides of the small vertically long space. On the other hand, even in the vertically long space in the center, a space is formed between the frame member 21 and the horizontal middle frame member 25, and a vertical cross member 27 for improving the sound insulation performance is incorporated in the lower space having a large area. In addition, a hole (not shown) is provided in the frame for installing the handle mechanism of the vertical frame member 23 so that the inside of the door can be seen through the hole and the inside of the door can be seen through the blindfold member 29. I try not to. The 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, as shown in FIG. Of course, it is not necessary to fill all the voids with the sound absorbing material 15. In this embodiment, the sound absorbing material 15 is not filled in the void S of the handle mechanism installation 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。Since the transparent plate 4 is made of a relatively thick laminated glass plate having excellent sound insulation performance in a low frequency range as described above, this portion can be formed without a crosspiece. Although there is no problem, if the transparent plate is composed of two transparent materials facing each other across a space, a crosspiece (for example, a transparent crosspiece) should be installed between them to improve the sound insulation performance. May be.
【００２０】また、図６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６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， 534.6Hz ｎ＝１，ｍ＝３， 567.3Hz ，ｎ＝１，ｍ＝４， 77
0.7Hz 空間Ｂ ｎ＝１，ｍ＝１， 522.9Hz ，ｎ＝１，ｍ＝
２， 562.9Hz ｎ＝１，ｍ＝３， 635.7Hz ，ｎ＝１，ｍ＝４，108
7.5Hz 空間Ｃ ｎ＝１，ｍ＝１， 646.4Hz ，ｎ＝１，ｍ＝
２， 930.5Hz ｎ＝１，ｍ＝３，1421.1Hz ，ｎ＝１，ｍ＝４，336
9.8Hz 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。Further, FIG. 6 shows a skeleton member having the same structure and dimensional relationship except that the vertical rail member 27 is not provided. The (first-order) natural bending vibration frequencies of the small surface plates corresponding to the spaces A to C in the frame member of FIG. 6 are as follows. Space A n = 1, m = 1, 516.3 Hz, n = 1, m =
2, 534.6Hz n = 1, m = 3, 567.3Hz, n = 1, m = 4, 77
0.7Hz space B n = 1, m = 1, 522.9Hz, n = 1, m =
2, 562.9Hz n = 1, m = 3, 635.7Hz, n = 1, m = 4,108
7.5Hz space C n = 1, m = 1, 646.4Hz, n = 1, m =
2, 930.5Hz n = 1, m = 3,1421.1Hz, n = 1, m = 4,336
9.8Hz This is because by inserting the crosspiece 27 and further dividing the spaces A to C, the natural bending vibration frequency shifts to the 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 =
2,2443.1Hz n = 1, m = 3,2463.7Hz, 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 less than 1 kHz without the crosspiece 27, but the natural bending vibration frequency exceeds 1 kHz when the crosspiece 27 is incorporated. 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 versus frequency characteristic of the soundproof door of the example, and the sound transmission loss versus frequency characteristic of the soundproof door (reference example) having the same configuration except that a frame member without a vertical crosspiece was used. Comparing the graph of FIG. 12 showing the above, it can be clearly understood that the soundproof door of the present invention has the sound insulation performance in the low frequency range greatly improved by incorporating the vertical crosspiece 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, other than the frame member shown in FIGS. 6 and 7, the same structure as the above embodiment can be cited as another embodiment. FIG. 6 shows the overall structure of another frame member, FIG. 7 shows the vertical side surface of the other frame member, and FIG. 8 shows the specific dimensional relationship of the other frame member. In the case of the frame member 2 according to the other embodiment, the left and right vertically long spaces have two
The vertical bar members 27, 27 of a book 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 vertically long space. The vertical crosspiece has no built-in vertical bars, so the small surface plate corresponding to this space C has a natural bending vibration frequency of 1 k.
Although the frequency exceeds Hz, since the ratio of the surface plate to the total area is small, the soundproof door as a whole as shown in the sound transmission loss versus frequency characteristic of the soundproof door of the other embodiment shown in FIG. The sound insulation performance in the 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-mentioned embodiment, the vertical crosspiece 27 passed to the short side of the vertically long space very effectively improves the natural bending vibration frequency to the higher side, and in all cases, TS-30 or more. It has 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。EFFECTS OF THE INVENTION The soundproof door of the present invention has a low frequency range after shifting to a higher natural bending vibration frequency by incorporating a crosspiece into a space of a frame material closed by two surface plates. As a result, resonance transmission does not occur, so that 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 the internal structure near the 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 member 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 the frame member 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。5 is a plan view showing a specific dimensional relationship of the frame member of FIG. 3. FIG.
【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 overall structure of a frame member of a soundproof door of 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 member 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 frame member of FIG.
【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 member 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 frequency characteristics of sound transmission loss of a soundproof door of another example.
【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 frequency characteristics of 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） 1 Soundproof door (soundproof door) 2 Frame member 3 Surface plate 4 Transparent plate 21 Frame member 23 Frame member 24 Middle frame member 27 Vertical cross member (cross member)
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年９月２１日[Submission date] September 21, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【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 formula, the bending rigidity D
It is theoretically possible to increase the natural bending vibration frequency by changing the surface plate thickness t or the surface plate density ρ. However, the bending rigidity D, the thickness t, and the density ρ of the surface plate are generally determined, and there is little room for change. On the other hand, when the bending vibration frequency is shifted to the higher side by incorporating the crosspiece, the crosspiece does not have to be changed, and the crosspiece itself is invisible from the surface, and can be freely incorporated. When the crosspiece is incorporated into the frame member, the natural bending vibration frequency of 1 kHz or more (more preferably 4 kHz) is considered when considering the small surface plates (virtual small surface plates) corresponding to the spaces between the surface plates. It is preferable. If possible, the natural bending vibration frequency of all the small surface plates is preferably 1 kHz or higher (more preferably 4 kHz). In the case of the soundproof door of the present invention, normally, only the natural bending frequency when n = 1 in the above formula needs to be considered. This is because the natural bending frequency when n = 2 or more does not have to be considered at a considerably high frequency.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２０[Correction target item name] 0020
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【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＝２，５３４．６Ｈｚ ｎ＝１，ｍ＝３，５６７．３Ｈｚ， ，ｎ＝１，ｍ＝
４，７７０．７Ｈｚ 空間Ｂ ｎ＝１，ｍ＝１，５２２．９Ｈｚ ，ｎ＝
１，ｍ＝２，５６２．９Ｈｚ ｎ＝１，ｍ＝３，６３５．７Ｈｚ ，ｎ＝１，ｍ＝
４，１０８７．５Ｈｚ 空間Ｃ ｎ＝１，ｍ＝１，６４６．４Ｈｚ ，ｎ＝
１，ｍ＝２，９３０．５Ｈｚ 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。Further, FIG. 9 shows a skeleton member having the same structure and dimensional relationship except that the vertical rail member 27 is not provided. The (first-order) natural bending vibration frequency of the small surface plate corresponding to the spaces A to C in the frame member 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 By inserting the crosspiece 27 and further dividing the spaces A to C, the natural bending vibration frequency shifts to the higher side as described below.
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
る防音戸。1. A frame member composed of a frame member arranged on at least four circumferences and a middle frame member arranged 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 member and the middle frame member are closed by surface plates, and both of the two surface plates are closely contacted in the closed space. A soundproof door that incorporates a crosspiece.
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 member and the vertical middle frame member.
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 true JPH0626284A (en) | 1994-02-01 |
| JP3121126B2 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7704203B2 (en) | 1998-12-11 | 2010-04-27 | Boston Scientific Scimed, Inc. | Kit for treating gastrointestinal tract |
| US7771347B2 (en) | 1998-12-11 | 2010-08-10 | Boston Scientific Scimed, Inc. | Method for treating tissue with an implant |
| US8177707B2 (en) | 1998-12-11 | 2012-05-15 | Boston Scientific Scimed, Inc. | Method for treating tissue with an implant |
-
1992
- 1992-07-09 JP JP04182590A patent/JP3121126B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7704203B2 (en) | 1998-12-11 | 2010-04-27 | Boston Scientific Scimed, Inc. | Kit for treating gastrointestinal tract |
| US7771347B2 (en) | 1998-12-11 | 2010-08-10 | Boston Scientific Scimed, Inc. | Method for treating tissue with an implant |
| US8177707B2 (en) | 1998-12-11 | 2012-05-15 | Boston Scientific Scimed, Inc. | Method for treating tissue with an implant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3121126B2 (en) | 2000-12-25 |
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