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    • 4. 发明公开
    • PNEUMATIC TIRE
    • 充气轮胎
    • EP3210797A1
    • 2017-08-30
    • EP17156123.6
    • 2017-02-14
    • Sumitomo Rubber Industries, Ltd.
    • KAWABATA, Hiroshi
    • B60C9/00B60C9/18B60C15/00
    • B60C9/20B60C9/185B60C2009/1842B60C2009/2019B60C2009/2064B60C2009/2067
    • A pneumatic tire is provided in the tread portion 2 with a belt 7 comprising a radially outermost first belt ply 7 A and a radially inner second belt ply 7 B each composed of belt cords 7c, and a band 8 thereon comprising a band ply 8 A compound of a band cord 8c. At least one of axially outer edge portions of the belt 7 is provided between the first belt ply 7 A and the second belt ply 7 B with a first reinforcing rubber layer 11 having a radially outer surface which is convexed radially outwardly and along which an axially outer edge portion 15 of the first belt ply 7A extends in a mountain shape so as to have an axially inner portion 15a extending axially outwardly and obliquely toward the band ply 8 A and an axially outer portion 15b extending axially outwardly and obliquely away from the band ply 8A.
    • 充气轮胎在胎面部2中设置有带7,带7包括径向最外侧的第一带束帘布层7A和径向内侧的第二带束帘布层7B,每个带束帘布层由带束帘线7c组成,带8上带8包括带束层8A 带绳8c。 带7的轴向外边缘部分中的至少一个在第一带束帘布层7A和第二带束层帘布层7B之间设置有第一增强橡胶层11,该第一增强橡胶层11具有径向向外凸出的径向外表面并且沿着轴向外边缘 第一带束帘布层7A的第一部分15以山形延伸,以便具有轴向向内并向着带状帘布层8A倾斜延伸的轴向内侧部分15a和轴向向外并且倾斜离开带状帘线层8A延伸的轴向外侧部分15b。
    • 5. 发明公开
    • PNEUMATIC TYRE
    • LUFTREIFEN
    • EP3135502A4
    • 2017-05-10
    • EP15782928
    • 2015-04-15
    • BRIDGESTONE CORP
    • MORI YOSUKE
    • B60C9/20B60C9/28
    • B60C9/20B60C3/04B60C9/18B60C9/2006B60C9/22B60C9/28B60C2009/2019B60C2009/2064B60C2009/228
    • A belt configured of a first inclined belt ply (16), a circumferential direction belt ply (18), a second inclined belt ply (20), and a third inclined belt ply (28) disposed in this sequence, is provided at a tire radial direction outer side of a carcass. When W1, W2, W3, and W4 are the respective widths of the belt plies, W4 > W1, and W4 > W2. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply (16) is from 45° to 60°, an angle of a cord of the circumferential direction belt ply (18) is 5° or less, an angle of cords of the second inclined belt ply (20) is from 30° to 60°, and an angle of cords of the third inclined belt ply (28) exceeds 5° and is 30° or less. The width W4 of the third inclined belt ply (28) is 80% or more of a ground contact width, and the cords of the second inclined belt ply (20) and the cords of the third inclined belt ply (28) are inclined in opposite directions to each other with respect to the tire circumferential direction.
    • 在轮胎上设置有由第一倾斜带束帘布层(16),周向带束层(18),第二倾斜带束帘布层(20)和第三倾斜带束帘布层(28)构成的带束 胎体的径向外侧。 当W1,W2,W3和W4是带束层的相应宽度时,W4> W1和W4> W2。 相对于轮胎周向方向,第一倾斜带束帘布层(16)的帘线的角度为45°至60°,周向带束帘布层(18)的帘线的角度为5°或更小, 所述第二倾斜带束帘布层(20)的帘线角度为30°至60°,并且所述第三倾斜带束帘布层(28)的帘线角度超过5°且为30°以下。 第三倾斜带束帘布层28的宽度W4为接地宽度的80%以上,并且第二倾斜带束帘布层20的帘线和第三倾斜带束帘布层28的帘线倾斜 相对于轮胎周向彼此相反的方向。