To prevent failures such as deficit of a tread and breakage of a sipe blade which forms a sipe when opening a mold.SOLUTION: A pneumatic tire comprises on a tread 10: a sipe row 50 in which a plurality of sipes 50A, 50B are provided at intervals in a tire circumferential direction; and a division mark provided at a division position of a sector 102. When a range of a region pinched between adjacent division marks 19 in a tire circumferential direction CD from a tire circumferential direction center PC to a prescribed angle toward the division mark 19 is so made as to be a central region R1 and a range from an outer side of the central region R1 to the division mark 19 is so made as to be a sector end region R2, an angle θ2B with respect to a tire axial direction AD of the sipe 50B provided on the sector end region R2 is larger than an angle θ2A with respect to the tire axial direction AD of the sipe 50A provided on the central region R1.SELECTED DRAWING: Figure 3
【課題】型開き時にトレッドが欠損したり、サイプを形成するサイプブレードが破損したりする不具合を防ぐ。【解決手段】本実施形態の空気入りタイヤは、複数のサイプ50A、50Bがタイヤ周方向に間隔をあけて設けられたサイプ列50と、セクタ102の分割位置に設けられた分割跡とをトレッド10に備え、タイヤ周方向CDに隣り合う分割跡19で挟まれた領域のうち、タイヤ周方向中央PCから分割跡19へ向かって所定角度までの範囲を中央領域R1とし、中央領域R1の外側から分割跡19までの範囲をセクタ端領域R2とすると、セクタ端領域R2に設けられたサイプ50Bのタイヤ軸方向ADに対する角度θ2Bが、中央領域R1に設けられたサイプ50Aのタイヤ軸方向ADに対する角度θ2Aより大きいものである。【選択図】 図3
PNEUMATIC TIRE AND TIRE VULCANIZATION MOLDING METAL MOLD
空気入りタイヤ及びタイヤ加硫成型金型
2024-10-03
Patent
Electronic Resource
Japanese
VULCANIZATION METAL MOLD FOR PNEUMATIC TIRE, AND PNEUMATIC TIRE
European Patent Office | 2024
|VULCANIZATION METAL MOLD FOR PNEUMATIC TIRE, AND PNEUMATIC TIRE
European Patent Office | 2024
|