发明名称 |
Sound isolation plate structure |
摘要 |
A sound isolation plate structure comprises a sheet of perforated board in which a plurality of holes are formed, and cylindrical portions provided on one surface side of the perforated board to extend from peripheral portions of the holes like cylinders unilaterally, wherein pneumatic vibration systems are formed between the cylindrical portions. Accordingly, a resonance frequency of vibration systems is easily tuned by adjusting a projection amount of the cylindrical portions so as to mate with a frequency of the noise to be isolated.
|
申请公布号 |
US6082489(A) |
申请公布日期 |
2000.07.04 |
申请号 |
US19980038502 |
申请日期 |
1998.03.09 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
IWAO, KEIJIRO;SHIMPO, YUJI |
分类号 |
B60R13/08;B62D25/20;G10K11/172;(IPC1-7):F01N1/08 |
主分类号 |
B60R13/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|