Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2021/095357
Kind Code:
A1
Abstract:
Provided is a pneumatic tire achieving both high-speed durability and shock-burst resistance, and also having low-noise properties. A carcass layer 13 is constituted by carcass cords composed from organic fiber cords obtained by twisting together filament bundles of organic fibers, the carcass layer having turned-up parts 131, each formed by folding back an end portion toward outside in the tire width direction at each of a pair of bead parts 10. The elongation at break EB of the carcass cords satisfies the condition EB ≥ 15%. An average total gauge GC of a center land part 20C which occupies a range of 10% of the width of the second-widest belt 142 in a belt layer 14 on both the left and right of a tire equatorial plane CL in the tire width direction, an average thickness SG of a sound-absorbing material 100 arranged inside the tire and occupying the same range as the center land part 20C in the tire width direction, and the elongation at break EB of the carcass cords satisfy the condition 8 ≤ GC/(GC+SG/10)×EB (%) ≤ 25.
Inventors:
SHINZAWA TATSURO (JP)
NAKANO ATSUHITO (JP)
HOMMA KENTA (JP)
NAKANO ATSUHITO (JP)
HOMMA KENTA (JP)
Application Number:
PCT/JP2020/035185
Publication Date:
May 20, 2021
Filing Date:
September 17, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C5/00; B60C9/00; B60C9/18; B60C11/00
Domestic Patent References:
| WO2015083780A1 | 2015-06-11 |
Foreign References:
| JP2017001651A | 2017-01-05 | |||
| JP2017137032A | 2017-08-10 | |||
| JP2019156070A | 2019-09-19 | |||
| JP2017226317A | 2017-12-28 | |||
| JPS61188204A | 1986-08-21 | |||
| JP2015231773A | 2015-12-24 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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