JPS63193903U

JPS63193903U -

Info

Publication number: JPS63193903U
Application number: JP8219787U
Authority: JP
Priority date: 1987-05-30
Filing date: 1987-05-30
Publication date: 1988-12-14

Description

[Brief explanation of the drawing]

第１図は本考案の実施例からなる自動二輪車用
タイヤの斜視図、第２図は同タイヤのデインプル
の配列を説明するトレツド半面展開図、第３図は
溝なしタイヤにおけるトレツド半面展開図である
。１……トレツド、２……長溝、３……デインプ
ル、ＣＬ……トレツド中心線、ＴＷ……トレツド
幅、Ｒ……半径、Ｃ……円弧、Ａ……タイヤ回転
方向。 Fig. 1 is a perspective view of a motorcycle tire according to an embodiment of the present invention, Fig. 2 is a half-expanded tread view of the tire to explain the arrangement of dimples, and Fig. 3 is a half-expanded tread view of a tire without grooves. be. 1...Tread, 2...Long groove, 3...Dimple, CL...Tread center line, TW...Tread width, R...Radius, C...Circular arc, A...Tire rotation direction.

Claims

[Scope of Claim for Utility Model Registration] (1) In a pneumatic motorcycle tire using a soft compound for the tread, a large number of long groove-shaped dimples are arranged on the tread surface on both the left and right sides from the tread center line CL, and these dimples are The angle α formed by the longitudinal direction of each of the dimples with respect to the anti-rotation direction of the tire in the circumferential direction of the tire is in the range of 0°±20° for the dimples close to the center region, and gradually increases as the dimples move toward the shoulder region, and A pneumatic tire for a motorcycle, characterized in that a dimple in an end region of a shoulder portion has a dimple in the range of 90°±20°. (2) Utility model registration claim No. 1 in which a large number of long groove-shaped dimples are arranged on the tread surface excluding the center area defined by a length equivalent to 10% of the tread width TW on both sides from the tread center line CL. Pneumatic tires for motorcycles as described in section. (3) The angle α that the longitudinal direction of the dimple makes with respect to the tire circumferential direction and the anti-rotation direction of the tire is an arc drawn with the radius R being 0.4 times the tread width TW, and centered on the outermost edge of the shoulder part. ±20 of the angle made by the tangent to the tire rotation direction
A pneumatic tire for a motorcycle as set forth in claim 1 of the utility model registration claim, wherein the range is within the range of . (4) The pneumatic tire for a motorcycle according to claim 1, wherein the ratio of the area of all dimples to the tread area is 8 to 40%.