发明名称 |
TIRE NOISE REDUCTION DEVICE AND PNEUMATIC TIRE |
摘要 |
<p>There is provided a tire noise reduction device and a pneumatic tire, in which weight can be reduced while sound absorbing characteristics are maintained and durability is improved. The tire noise reduction device 1A of the present invention includes a sound absorbing member 3 of flexible polyurethane foam to be attached to an inner surface of a tire facing a cavity of the tire. The sound absorbing member 3 comprises a first sound absorbing layer 3A placed on a tire inner surface side thereof. The first sound absorbing layer 3A has a tear strength (N/cm) per unit density (kg/m 3 ) which is equal to or more than 0.30. The second sound absorbing layer 3B has a density which is lower than that of the first sound absorbing layer 3A.</p> |
申请公布号 |
EP2067634(A1) |
申请公布日期 |
2009.06.10 |
申请号 |
EP20070807877 |
申请日期 |
2007.09.26 |
申请人 |
THE YOKOHAMA RUBBER CO., LTD. |
发明人 |
TANNO, ATSUSHI;TSUJIMOTO, HIROYUKI |
分类号 |
B60C5/00 |
主分类号 |
B60C5/00 |
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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