| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire in which a separation of belt layers is prevented to improve the durability of a crossing belt by setting a uniform formation of an inter-chord distance of the tire in its diameter direction of the belt layers constituting a crossing belt. SOLUTION: A pneumatic tire 1 is provided with a belt 5 on an outer circumference of a crown part 3 of a carcass 2 which comprises at least two-layered belt layer having reinforcing elements extending while being inclined at a relative low angle in respect to a tire equator surface E covered with rubber. There are provided a first belt layer 4a and a second belt layer 4b of the belt layers constituting this laminated belt to cause the reinforcing elements to cross to each other while holding the tire equator surface E. A wedge-like edge rubber having its thickness gradually decreased toward the extremity end is arranged between the end portions of the first belt layer 4a and the second belt layer 4b. An inter-chord distance in a tire diameter direction of the first belt layer 4a and the second belt layer 4b is more than 0.5 times of that at the tire equator surface position at either the extremity end position of the edge rubbers 6 or its adjoining position. COPYRIGHT: (C)2005,JPO&NCIPI
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