TIRE

• Main Author: KITANI NAOFUMI
• Format: Patent
• Language: English; Japanese
• Published: 09.01.2020
• 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

To provide a tire in which durability and wet performance of a land portion can be improved.SOLUTION: A tire having a tread portion 2 is provided. The tread portion 2 has a land portion 5 which extends in a tire circumferential direction. The land portion 5 has a first vertical edge 5a and a second vertical edge 5b. The land portion 5 is provided with a plurality of lateral grooves 10 which extend from the first vertical edge 5a and break off in the land portion 5, and a plurality of lateral fine grooves 15 which extend from the second vertical edge 5b with a groove width smaller than that of the lateral groove 10. The lateral fine groove 15 has, on a cross section orthogonal to a lengthwise direction thereof, an opening 16 which opens on a tread of the land portion 5, a body part 17 which is continued to a tire radial direction inner side of the opening 16, and a widened bottom portion 18 having a width larger than that of the body part 17. The widened bottom 18 of at least one lateral fine groove 15 is communicated with the lateral groove 10.SELECTED DRAWING: Figure 1 【課題】陸部の耐久性及びウェット性能を向上し得るタイヤを提供する。【解決手段】トレッド部２を有するタイヤである。トレッド部２は、タイヤ周方向に延びる陸部５を有する。陸部５は、第１縦エッジ５ａと第２縦エッジ５ｂとを有する。陸部５には、第１縦エッジ５ａから延び陸部５内で途切れる複数の横溝１０と、第２縦エッジ５ｂから横溝１０よりも小さい溝幅で延びる複数の横細溝１５とが設けられる。横細溝１５は、その長さ方向と直交する横断面において、陸部５の踏面で開口する開口部１６と、開口部１６のタイヤ半径方向内側に連なる本体部１７と、本体部１７よりも大きい幅を有する拡幅底部１８とを有し、横細溝１５の少なくとも１本は、拡幅底部１８が横溝１０と連通している。【選択図】図１