JPS5889403U - Rally pneumatic tires - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第３図は本考案の実施例からなる冬期プリー用
空気入りタイヤを示すもので、第１図は第１実施例のト
レッド部の一部を示す平面視説明図、第２図は第１図Ｘ
−Ｘ線断面説明図、第３図は第２実施例のトレッド部の
一部を示す平面視説明図である。 ９・・・中央周方向溝、１０・・・外側周方向溝、１１
・・・断面方向溝、９１．１０１・・・直線部、９２゜
１０２・・・移行部、Ａ・・・トレッド中央部、Ｂ・・
・ショルダ一部、Ｐ・・・ピッチ、１３・・：タイヤ周
方向に平行な溝、１２１．１２２・・・ブロック片。 フ ２図　　　　　　　　　　　埠1 to 3 show a pneumatic tire for winter pulleys according to an embodiment of the present invention. FIG. 1 is an explanatory plan view showing a part of the tread portion of the first embodiment, and FIG. is Figure 1
- An explanatory X-ray cross-sectional view, and FIG. 3 is an explanatory plan view showing a part of the tread portion of the second embodiment. 9... Central circumferential groove, 10... Outer circumferential groove, 11
...Cross-sectional groove, 91.101...Straight line part, 92°102...Transition part, A...Tread center part, B...
- Shoulder part, P... pitch, 13...: groove parallel to tire circumferential direction, 121.122... block piece. Figure 2: Wharf

Claims (1)

【実用新案登録請求の範囲】 １　トレッド中央部Ａに設けた中央周方向溝９と、トレ
ッド中央部Ａとショルダ一部Ｂ間に設けた左右一対の外
側周方向溝１０と、これら３本の各周方向溝９．１０に
連結する断面方向溝１１とで形成するブロックからなる
トレッドパターンを備えた空気入りタイヤにおいて、前
記３本の各周方向溝９．１０は、同一ピッチＰ内にてそ
れぞれ前記各周方向溝９．１０の溝幅ｔｉｓ　ｔ２とほ
ぼ同じ幅だけタイヤ断面方向にずれたタイヤ赤道面に平
行な２つの直線部９１．１０１と該各画線部９１，１０
１を連結する各移行部９２．１０２からなる千鳥形状に
配置すると共に、前記左右一対の外側周方向溝１０は、
前記中央周方向溝９に対して相互に同一方向にほぼ１／
２ピツチずれて同二形状に配置され、また前記断面方向
溝１１は、前記各周方向１９．１０の各直線部９１，１
０１と各移行部９２゜１０２の接合部附近に連続してタ
イヤ断面方向にほぼ並んで配置されており、さらに前記
各周方向溝９．１０及び各断面方向溝１１によって形成
されるタイヤ断面方向に対してエッヂ量が多い各ブロッ
ク１２を、タイヤ赤道面を中心としてジグザグ状に配置
したことを特徴とす乞うリー用空気入りタイヤ。 ２　ブロック１２を、タイヤ周方向に平行な溝１３によ
ってブロック片１２１と１２２とに分割した実用新案登
録請求の範囲第１項記載のラリ−用空気入りタイヤ。[Claims for Utility Model Registration] 1. A central circumferential groove 9 provided in the tread center part A, a pair of left and right outer circumferential grooves 10 provided between the tread center part A and the shoulder part B, and these three In a pneumatic tire equipped with a tread pattern consisting of blocks formed by cross-sectional grooves 11 connected to each circumferential groove 9.10, each of the three circumferential grooves 9.10 is arranged within the same pitch P. Two straight line portions 91.101 parallel to the tire equatorial plane that are shifted in the tire cross-sectional direction by approximately the same width as the groove width tis t2 of each of the circumferential grooves 9.10, and the image line portions 91, 10.
1, and the pair of left and right outer circumferential grooves 10 are
approximately 1/2 in the same direction with respect to the central circumferential groove 9.
The cross-sectional grooves 11 are arranged in the same two shapes shifted by 2 pitches, and the grooves 11 in the cross-sectional direction are arranged in the straight portions 91, 1
01 and each transition part 92° 102 are arranged continuously in the vicinity of the joint part of the tire in the cross-sectional direction, and furthermore, in the tire cross-sectional direction formed by each of the circumferential grooves 9 and 10 and each cross-sectional groove 11. This pneumatic tire for Lee is characterized in that each block 12 having a large edge amount is arranged in a zigzag shape centered on the tire's equator plane. 2. A pneumatic rally tire according to claim 1, in which the block 12 is divided into block pieces 121 and 122 by a groove 13 parallel to the circumferential direction of the tire.