发明名称 |
SOUND-DEADENING STRUCTURE OF VENT TUBE AND SOUND-DEADENING STRUCTURE OF CASE |
摘要 |
<p>A sound-deadening structure of vent tube and sound-deadening structure of case that realize not only deadening of sound in a wide frequency region but also prevention of any deterioration of ventilation resistance in the vent tube and case. A venthole (11a) is provided on the circumferential wall of a vent tube (11). The circumferential wall of the vent tube (11) is provided with a cover (12) disposed so as to cover the venthole (11a). A baglike body (13) filled with an active carbon (14) is disposed in the space defined by the circumferential wall of the vent tube (11) and the internal wall of the cover (12).</p> |
申请公布号 |
WO2009110060(A1) |
申请公布日期 |
2009.09.11 |
申请号 |
WO2008JP53815 |
申请日期 |
2008.03.04 |
申请人 |
TOKYO ROKI CO. LTD.;ISHIDA, KOSAKU |
发明人 |
ISHIDA, KOSAKU |
分类号 |
F02M35/12;F01N1/24 |
主分类号 |
F02M35/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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