PNEUMATIC TIRE

• Main Author: WADA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.11.2014
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a pneumatic tire excellent in maneuvering stability.SOLUTION: In a cross-section in a tire width direction, a shortest distance SWH between a line 'a' passing through a largest width part of a tire 1 and parallel to a rotational shaft of the tire 1 and a line 'f' in contact with a bead toe 20 and drawn in parallel to the rotational shaft is larger than a shortest distance TUH between a line drawn to pass through a folded end E of a carcass 3 in parallel to the rotational shaft and the line 'f' and smaller than 0.4 times as large as a tire cross-sectional height H. If assuming that a line segment connecting an intersection S between the line 'a' and the carcass 3 to a center B of a bead core is SB and a position on the carcass 3 at which a shortest distance from the line 'f' is 0.5 times as large as the cross-sectional height H is W, a magnitude of the line segment SB is smaller than that of a line segment WB connecting the center B to the position W. If assuming that a shortest distance between a line 'k' in contact with a tread surface of a tread 4 of the tire 1 and parallel to the line 'f' and a line 'j' in contact with an inner surface of the tire 1 and parallel to the line 'f' is TG and a shortest distance between the line 'k' and a line 'l' in contact with the carcass 3 and parallel to the line 'f' is TT, TT/TG is set larger than 0 and smaller than 0.5. 【課題】操縦安定性に優れた空気入りタイヤを提供する。【解決手段】タイヤ幅方向断面において、タイヤ１の最大幅部を通りタイヤ１の回転軸に平行な直線ａとビードトゥ２０に接し回転軸と平行に引いた直線ｆとの最短距離ＳＷＨは、カーカス３の折り返し端部Ｅに回転軸と平行に引いた直線と直線ｆとの最短距離ＴＵＨよりも大きく、タイヤの断面高さＨの０．４倍よりも小さく、直線ａとカーカス３との交点Ｓとビードコアの中心Ｂとを結ぶ線分をＳＢ、直線ｆからの最短距離が断面高さＨの０．５倍であるカーカス３上の位置をＷとし、線分ＳＢの大きさは、中心Ｂと位置Ｗとを結ぶ線分ＷＢの大きさよりも小さく、タイヤ１のトレッド４の踏面に接し直線ｆに平行な直線ｋとタイヤ１の内面に接し直線ｆに平行な直線ｊとの最短距離をＴＧ、直線ｋとカーカス３に接し直線ｆに平行な直線ｌとの最短距離をＴＴとし、ＴＴ／ＴＧは、０より大きく０．５より小さくする。【選択図】図２