JPS6249402U

JPS6249402U -

Info

Publication number: JPS6249402U
Application number: JP13373085U
Authority: JP
Priority date: 1985-08-30
Filing date: 1985-08-30
Publication date: 1987-03-27
Also published as: JPH0431841Y2

Description

[Brief explanation of the drawing]

第１〜第４図は本考案に係る空気入りタイヤの
第１実施例を示す図であり、第１図はその一部平
面図、第２図は第１図の―矢視断面図、第３
図は第１図の―矢視断面図、第４図は第１図
の―矢視断面図である。第５図は本考案に係
る空気入りタイヤの第２実施例を示す一部平面図
である。第６図、第７図は従来タイヤを示す図で
あり、第６図はその一部平面図、第７図は従来タ
イヤのレイングルーブワンダーを説明する図であ
る。１……空気入りタイヤ、２……トレツド部、３
……主溝、３ａ，３ｂ……壁面、５，６……陸部
域、５ａ，６ａ……陸部域の凹部、５ｂ，６ｂ…
…陸部域の凸部、５ｃ，６ｃ……表面、８……副
溝、１０，１１……陵線、１０ｂ_１，１１ｂ_１…
…凸部の陵線の直線部分、１３……主溝中のタイ
ヤ周方向へ透視可能部分、θａ……凹部溝壁角度
、θｂ……凸部溝壁角度、Ｖ_５，Ｖ_６……陸部域
表面に垂直な面、Ｓ_３……主溝の投影の全面積、
Ｓ_１３……透視可能部分の投影の面積。 1 to 4 are diagrams showing a first embodiment of a pneumatic tire according to the present invention, in which FIG. 1 is a partial plan view thereof, FIG. 3
The figure is a cross-sectional view taken along the arrow ``-'' in FIG. 1, and FIG. 4 is a sectional view taken along the arrow ``--'' in FIG. FIG. 5 is a partial plan view showing a second embodiment of the pneumatic tire according to the present invention. 6 and 7 are diagrams showing a conventional tire, FIG. 6 is a partial plan view thereof, and FIG. 7 is a diagram illustrating the rain groove wander of the conventional tire. 1...Pneumatic tire, 2...Tread section, 3
...Main groove, 3a, 3b...Wall surface, 5, 6...Land area, 5a, 6a...Recess in land area, 5b, 6b...
...Protrusions in the land area, 5c, 6c...surface, 8...minor groove, 10, 11...ridge line, 10b ₁ , 11b ₁ ...
...Straight line portion of the ridge line of the convex portion, 13... Portion in the main groove that can be seen through in the tire circumferential direction, θa... Concave groove wall angle, θb... Convex groove wall angle, V ₅ , V ₆ ... Land A plane perpendicular to the area surface, _S3 ...Total area of projection of the main groove,
_S13 ... Area of projection of transparent part.

Claims

[Scope of utility model registration request]

In a pneumatic tire, the tread portion has at least two main grooves extending in a zigzag shape substantially circumferentially, and the tread portion is divided into at least three land areas in the axial direction of the tire by the main grooves, and The two almost parallel ridge lines that form the opening of the main groove consist of the ridge lines of the concave part and the ridge line of the convex part of the ridge area, which are arranged alternately in the circumferential direction of the tire. The line has at least a straight line that is substantially parallel to the circumferential direction of the tire, and in the ridge line of the recess in the land area, the angle of the recess groove wall between the plane perpendicular to the surface of the land area and the wall surface of the main groove is Greater than the angle between the wall surface of the main groove and a plane perpendicular to the surface of the land area in the ridge line of the convex part of the area, and relative to the total area of the projection of the main groove onto the cross section in the axial direction of the tire. A pneumatic tire characterized in that the ratio of the projected area of the visible portion in the tire circumferential direction in the main groove is 0.3 to 0.7.