JPS59171937U

JPS59171937U - Multilayer sound insulation material

Info

Publication number: JPS59171937U
Application number: JP6634383U
Authority: JP
Inventors: 久佳加藤; 増田　憲明; 邦郎金丸
Original assignee: トヨタ自動車株式会社
Priority date: 1983-05-02
Filing date: 1983-05-02
Publication date: 1984-11-16
Also published as: JPS6234766Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、この考案の実施例を示す断面図、第２図は、
第１図の複層遮音部材の遮音効果を示す２、　　グラフ
、第３図は、この考案の複層遮音部材を自動車の車室内
に使用した状態図、第４図は、第３図のＴＶ−ＩＶ線断
面図、第５図は、第１図の実施例に多孔質遮音材を積層
した断面図、第６図は、第５図の実施例と従来の遮音材
の遮音性を比較したグラフ、第７図ないし第９図は、第
５図の積層遮音材を、第３図相当の断面図の使用状態で
示した変型例である。Ｓ・・・複層遮音部材、１・・・気密性シート状遮音材
、１０・・・気密性シート状遮音材、１１・・・気密性
シート状部材、２・・・吸音材、２０・・・吸音材、Ｄ
・・・ダッシュパネル、ＦＦ・・・フロントフロアパネ
ル、ＣＦ…センタフロアパネル、ＲＦ・・・リアフロア
パネル、３・・・ダンピング材、４・・・フロアカーペ
ット、５・・・多孔質遮音材。Fig. 1 is a sectional view showing an embodiment of this invention, and Fig. 2 is a sectional view showing an embodiment of this invention.
Figure 1 is a graph showing the sound insulation effect of the multilayer sound insulation member, Figure 3 is a diagram of the multilayer sound insulation member of this invention used in the interior of an automobile, and Figure 4 is the TV shown in Figure 3. -IV line sectional view, Figure 5 is a cross-sectional view of the example in Figure 1 laminated with porous sound insulation material, and Figure 6 is a comparison of the sound insulation properties of the example in Figure 5 and the conventional sound insulation material. The graphs in FIGS. 7 to 9 are modified examples of the laminated sound insulating material shown in FIG. 5, shown in a used state in a sectional view corresponding to FIG. 3. S... Multilayer sound insulation member, 1... Airtight sheet-like sound insulation material, 10... Airtight sheet-like sound insulation material, 11... Airtight sheet-like member, 2... Sound absorbing material, 20.・Sound absorbing material, D
... Dash panel, FF... Front floor panel, CF... Center floor panel, RF... Rear floor panel, 3... Damping material, 4... Floor carpet, 5... Porous sound insulation material.

Claims

[Scope of utility model registration request]

A plurality of airtight sheet-like sound insulating materials made of vinyl chloride sheets, rubber sheets, etc. and sound absorbing materials made of felt, glass wool, etc. are alternately stacked and laminated, and the sound absorbing material is separated by the airtight sheet-like sound insulating materials. A multilayer sound insulation characterized in that the thickness a/a+b (however, the value of a+b is constant) between the thickness a of one side of the material and the thickness b of the other side is set to 0.3 to 0.7. Element.