PROBLEM TO BE SOLVED: To suppress breakage due to crack and chip, on a tread land part.SOLUTION: A tread surface of a tire is configured so that: plural land parts are formed by at least one peripheral groove extending in a tread peripheral direction, and a lateral groove for connecting peripheral grooves, and/or the peripheral groove and a tread ground contact end, and at least one land part has plural sipings extending in parallel. Out of the plural sipings, the siping adjacent to the lateral groove and extending along the lateral groove, or the sipings adjacent to the peripheral groove and extending along the peripheral groove has a groove wall having no projection, which is molded via a cross vent of a siping formation blade, on at least a half part of a siping length direction on a corner part of the land part.SELECTED DRAWING: Figure 1
【課題】トレッド陸部における、割れや欠けによる故障を抑制する。【解決手段】トレッドの踏面を、該トレッドの周方向に延びる少なくとも1本の周方向溝と、該周方向溝相互間及び/又は該周方向溝とトレッド接地端との間をつなぐ横溝と、によって複数の陸部を区画し、少なくとも1つの該陸部に、並列して延びる複数本のサイプを具えるタイヤであって、前記複数本のサイプのうち、前記横溝に隣接し且つ当該横溝に沿って延びるサイプ、又は、前記周方向溝に隣接し且つ当該周方向溝に沿って延びるサイプは、少なくとも前記陸部の隅部側のサイプ長さ方向半部に、サイプ形成用ブレードのクロスベントを介して成形される突起のない溝壁を有することを特徴とする。【選択図】図1
TIRE, TIRE MOLDING MOLD, AND TIRE PRODUCTION METHOD
タイヤ、タイヤ成形用金型及びタイヤの製造方法
2016-06-23
Patent
Electronic Resource
Japanese
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