| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of reducing a pattern noise on the premise that an air core resonance can be reduced by a resonator. SOLUTION: A pneumatic tire having at least one circumferential groove 3 extending along a circumferential direction of the tire is provided in a tread portion 1 and at least one row of rib-like land part 5 adjacent to it. The resonator 11, consisting of a branched groove 7 opening to the circumferential groove 3 and an air chamber part 9 for communicating with the circumferential groove 3 via the branched groove 7 of which section area is larger than that of the branched groove, for reducing noise caused by the circumferential groove 3 is provided in the rib-like land part 5. The resonator 11 has a first end part 13 and a second end part 15 for defining a length L in the circumferential direction of the tire of the air chamber part 9 and the branched groove 7 extends from the second end part 15 in a direction away from the first end part 13. COPYRIGHT: (C)2009,JPO&INPIT |
