Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/002703
Kind Code:
A1
Abstract:
Provided is a tire that makes it possible to effectively suppress failures caused by the deflection of the tire and failures caused by friction between the tire and a rim flange, and improve durability. In a tire 10 having a cross-sectional height SH in the range of 50 mm to 150 mm, the relationship 0.01 ≤ A/SH ≤ 0.16 between A and the cross-sectional height SH is satisfied in a no-load state in which the tire 10 is assembled to a specific rim and filled to a specific internal pressure. Here, A is the opening distance between the tire 10 and a rim flange 22 along the perpendicular from the radial outermost point Tr of the rim flange 22 to the outer surface of the tire 10, and the cross-sectional area Sr of a rubber portion R included in a region surrounded by a turn-up portion 4B of a carcass layer 4 and two perpendiculars from points S and T to the turn-up portion 4B of the carcass layer 4 is in the range 12mm2≤Sr≤101mm2, where point S is the opening start point at which the rim flange 22 separates from the tire 10, and point T is the point at which the outer surface of the tire 10 and the perpendicular from the radial outermost point Tr of the rim flange 22 to the outer surface of the tire 10 intersect.
Inventors:
KODA HIRAKU (JP)
MURATA TAKAHISA (JP)
SHIMIZU MASATOSHI (JP)
MURATA TAKAHISA (JP)
SHIMIZU MASATOSHI (JP)
Application Number:
PCT/JP2022/013154
Publication Date:
January 26, 2023
Filing Date:
March 22, 2022
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C3/04; B60C9/08; B60C15/00; B60C15/06
Foreign References:
| JP2005238916A | 2005-09-08 | |||
| JP2021054295A | 2021-04-08 | |||
| JP2020015495A | 2020-01-30 | |||
| JP2007118903A | 2007-05-17 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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