发明公开
EP4438335A1 TIRE
审中-公开
- 专利标题: TIRE
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申请号: EP24157856.6申请日: 2024-02-15
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公开(公告)号: EP4438335A1公开(公告)日: 2024-10-02
- 发明人: ITO, Shuhei
- 申请人: Sumitomo Rubber Industries, Ltd.
- 申请人地址: JP Kobe-shi, Hyogo 651-0072 6-9, Wakinohama-cho 3-chome Chuo-ku
- 专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人地址: JP Kobe-shi, Hyogo 651-0072 6-9, Wakinohama-cho 3-chome Chuo-ku
- 代理机构: Manitz Finsterwald Patent- und Rechtsanwaltspartnerschaft mbB
- 优先权: JP 23049372 2023.03.27
- 主分类号: B60C11/00
- IPC分类号: B60C11/00 ; B60C11/12 ; B60C11/03
摘要:
Provided is a tire 1 that can suppress a decrease in grip performance and wet performance in a late stage of wear while improving rolling resistance performance and wear resistance. The tire 1 includes a tread 110 having: a layered structure including a first cap layer 111, a second cap layer 112, and a base layer 113; and a tread pattern having shoulder circumferential grooves 330 and circumferential narrow grooves 320. Each circumferential narrow groove 320 has a narrow portion 321 and a wide portion 322. The narrow portion 321 has a groove width NW with which sidewalls 321a (321b) of the narrow portion 321 come into contact with each other when the tire 1 comes into contact with a road surface. A complex elastic modulus of the second cap layer 112 is lower than a complex elastic modulus of the first cap layer 111.
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