JPS6391905U

JPS6391905U -

Info

Publication number: JPS6391905U
Application number: JP18784186U
Authority: JP
Priority date: 1986-12-08
Filing date: 1986-12-08
Publication date: 1988-06-14

Description

[Brief explanation of the drawing]

第１図は従来の空気入りラジアルタイヤのトレ
ツド端の周方向主溝の１部断面図である。第２図
は本考案の空気入りラジアルタイヤの周方向１部
展開平面図である。第３図は本考案のトレツド幅
の５０％以上の外側に配置されている主溝の周方
向の振り幅を示した図である。第４図は第３図の
溝の周方向のＡ，Ｂ，Ｃ，の位置での周方向断面
図である。 FIG. 1 is a partial sectional view of a circumferential main groove at the tread end of a conventional pneumatic radial tire. FIG. 2 is a partially developed plan view in the circumferential direction of the pneumatic radial tire of the present invention. FIG. 3 is a diagram showing the amplitude of the circumferential direction of the main groove arranged outside 50% or more of the tread width of the present invention. FIG. 4 is a circumferential sectional view of the groove in FIG. 3 at positions A, B, and C in the circumferential direction.

Claims

[Claim for Utility Model Registration] A plurality of circumferential main grooves extending in the circumferential direction are arranged in the tread tread surface, and an organic fiber belt is provided in the tread crown, and the grooves are connected to each other at a relatively small angle in the circumferential direction of the tire. In a pneumatic radial tire having at least two intersecting belt layers, the circumferential main groove is such that a main groove within 50% of the tread width at the center portion is substantially the same from when it is new to when it is worn out. The main groove has a minimum width of at least 5 when sandwiching the tire center and has a contact width under load.
A pneumatic radial tire characterized in that the main groove, which is disposed 0% or more on the outside in the axial direction of the tire, has a substantially straight shape when new, but becomes increasingly zigzag as wear progresses.