公开(公告)号：US06720069B1

公开(公告)日：2004-04-13

申请号：US09482731

申请日：2000-01-14

申请人： Atsushi Murakami ,  Shuuchirou Wada ,  Kazuo Nishimoto ,  Takahiro Niwa ,  Hiroto Sugai ,  Haruko Sasaki

发明人： Atsushi Murakami ,  Shuuchirou Wada ,  Kazuo Nishimoto ,  Takahiro Niwa ,  Hiroto Sugai ,  Haruko Sasaki

IPC分类号： B32B2700

CPC分类号： G10K11/16 ,  B29C44/5627 ,  B29K2105/04 ,  B29L2009/00 ,  Y10T428/24273 ,  Y10T428/24298 ,  Y10T428/24364 ,  Y10T428/24405 ,  Y10T428/24479 ,  Y10T428/24496 ,  Y10T428/24512 ,  Y10T428/24983 ,  Y10T428/24992 ,  Y10T428/249991 ,  Y10T428/249992

摘要： A sound absorbing structure comprising at least one porous member including a plurality of holes, and the holes are at least one kind of through holes and non-through holes. It is preferable that a plurality of porous members are stacked. It is also preferable that the holes of porous members are formed as diameter-varied holes, and an area of opening of each diameter-varied hole formed in the surface opposite to a sound source is largest and the area of opening of each the diameter-varied hole is reduced in a direction of the thickness of the porous member. Moreover, it is also preferable that the sound absorbing structure further comprises a coating film formed on at least a surface of the porous member which is opposite to a sound source wherein the holes penetrates the coating film and the porous member.

摘要翻译： 一种吸音结构，包括至少一个包括多个孔的多孔构件，并且所述孔是至少一种通孔和非通孔。 优选堆叠多个多孔构件。 另外，多孔构件的孔也优选形成为直径变化的孔，与声源相反的面形成的各直径变化孔的开口面积最大， 在多孔构件的厚度方向上减少了多个孔。 此外，吸音结构还优选还包括形成在多孔构件的至少与声源相对的表面上的涂膜，其中孔穿透涂膜和多孔构件。