PROBLEM TO BE SOLVED: To improve snow road performance with good balance while maintaining uneven wear resistance.SOLUTION: A heavy load pneumatic tire 1 includes a center land part 6 formed to extend in a tire peripheral direction while a width in a tire axial direction is repeatedly increased/decreased between a center main groove 3 and a middle main groove 4. The center main groove 3 includes a first inclined part 3A and a second inclined part 3B inclined oppositely to the first inclined part 3A and at an angle smaller than that of the first inclined part 3A to the tire peripheral direction. The center land part 6 has treads, which are arrayed in the tire peripheral direction, sectioned into hexagonal center blocks 11 by a plurality of center lateral grooves 9 connecting the zig zag top part of the center main groove 3 and the zig zag top part of the middle main groove 4 to each other where the width of the center land part 6 in the tire axial direction is smallest. The center lateral groove 9 and the first inclined part 3A incline in the same direction with respect to the tire axial direction.SELECTED DRAWING: Figure 1

    【課題】耐偏摩耗性能を維持しつつ雪路性能をバランス良く向上させる。【解決手段】センター主溝3とミドル主溝4との間を、タイヤ軸方向の幅が増減を繰り返しながらタイヤ周方向にのびるセンター陸部6が形成された重荷重用空気入りタイヤ1である。センター主溝3は、第1傾斜部3Aと、第1傾斜部3Aとは逆向きにかつ第1傾斜部3Aのタイヤ周方向に対する角度よりも小さな角度で傾斜する第2傾斜部3Bとを含んでいる。センター陸部6は、センター陸部6のタイヤ軸方向の幅が最小となるセンター主溝3のジグザグの頂部とミドル主溝4のジグザグの頂部とを継ぐ複数本のセンター横溝9によって、タイヤ周方向に並ぶ踏面が六角形状のセンターブロック11に区分されている。センター横溝9と第1傾斜部3Aとは、タイヤ軸方向に対し同じ向きに傾斜する。【選択図】図1


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    Title :

    HEAVY LOAD PNEUMATIC TIRE


    Additional title:

    重荷重用空気入りタイヤ


    Contributors:

    Publication date :

    2017-03-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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