JPS624611A - Pneumatic tire for vehicle running on rough ground - Google Patents

Pneumatic tire for vehicle running on rough ground

Info

Publication number
JPS624611A
JPS624611A JP60143043A JP14304385A JPS624611A JP S624611 A JPS624611 A JP S624611A JP 60143043 A JP60143043 A JP 60143043A JP 14304385 A JP14304385 A JP 14304385A JP S624611 A JPS624611 A JP S624611A
Authority
JP
Japan
Prior art keywords
blocks
block
angle
tire
circumferential direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60143043A
Other languages
Japanese (ja)
Other versions
JPH0476802B2 (en
Inventor
Toshinori Furusawa
稔規 古澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ohtsu Tire and Rubber Co Ltd
Original Assignee
Ohtsu Tire and Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ohtsu Tire and Rubber Co Ltd filed Critical Ohtsu Tire and Rubber Co Ltd
Priority to JP60143043A priority Critical patent/JPS624611A/en
Publication of JPS624611A publication Critical patent/JPS624611A/en
Publication of JPH0476802B2 publication Critical patent/JPH0476802B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/14—Tyres specially adapted for particular applications for off-road use

Landscapes

  • Tires In General (AREA)

Abstract

PURPOSE:To strengthen a tracking force while the running performance is maintained as is by arranging blocks, both the angle to an equator line and their cross sectional shape of which are specified, transversally into a herringbone pattern in such a way that each of them overlaps each other in the circumferential direction. CONSTITUTION:Each of center blocks 8 in an inverted V shape is arranged on an equator line L-L forming an angle alpha of 90-125 deg. with the equator line L. And each of intermediate blocks 8 is arranged on the extension line of the said center block so that each of them with respect to the circumferential direction overlaps (10) each other transversally. And the block 8 is formed into a trapezoidal shape in cross section where a rising angle beta of the kicking surface 11 facing the direction 9 that a wheel rotates, is made to be greater than a rising angle theta of the counterkicking surface 12 at the opposite side. In addition, the said kicking surface 11 is made to be parallel to the said angle alphaof inclination. This configuration is capable of strengthening a tracking force without degrading the running performance.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、不整地走行に供される車両用の超低圧空気入
リタイヤに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an ultra-low pressure pneumatic tire for a vehicle used for traveling on rough terrain.

（従来の技術） 従来、不整地走行用の超低内圧適用タイヤとしてはバギ
ー（Ｂｕｇｇｙ）車用タイヤが知られている。(Prior Art) Buggy tires have been known as ultra-low internal pressure tires for running on rough terrain.

バギー車は主として泥ねい地、草地、雪上、砂上地域を
走行するもので、この種車の使用目的はスポーツ、レジ
ャーあるいは競走である。Buggy vehicles are primarily used for driving in muddy, grassy, snowy, and sandy areas, and these types of vehicles are used for sports, leisure, or racing.

またバギー車は三輪または四輪自動車の場合があり、内
圧は０．１５　ｋｇ／ｃｄ前後のような超低圧が適用さ
れる。このためタイヤの補強構造としては、補強がなく
実質上総ゴムの場合、トレンド区域にのみコード層を適
用する場合、またはラジアル方向にコードを配列したカ
ーカスを１プライ両ビード間に亘って適用し、トレッド
部には通常この種の構造においてカーカスのクラウン部
に併用されるベルト層を用いない、いわゆる変形ラジア
ル構造が知られている。The buggy may be a three-wheeled or four-wheeled vehicle, and an ultra-low internal pressure of around 0.15 kg/cd is applied. For this reason, the reinforcing structure of the tire is to use virtually all rubber without reinforcement, to apply a cord layer only in the trend area, or to apply a carcass with cords arranged in the radial direction between both beads of one ply. A so-called modified radial structure is known in which the tread part does not use the belt layer that is normally used in the crown part of the carcass in this type of structure.

一部トレンド部はタイヤの回転軸と平行にブロックまた
はラグを突設し、そして周方向へは突設したブロック列
またはラグを所定間隔をおいて規則的に配列した構造が
知られている。Some trend parts are known to have a structure in which blocks or lugs are protruded parallel to the rotational axis of the tire, and the protruding block rows or lugs are regularly arranged at predetermined intervals in the circumferential direction.

しかしこのようなトレッド構造は、直進走行時に作用す
る駆動力または制動力に対しては問題ないが、操舵時或
いは旋回時には、トレッドに周方向に直角に横方向にブ
ロックまたはラグが並んでいる（横溝が平行）と横方向
に作用する力（横力）に対し、地面把持力が不足し、こ
のため操縦性が劣るという問題があった。However, although such a tread structure has no problem with the driving force or braking force that is applied when driving straight, when steering or turning, blocks or lugs are arranged horizontally on the tread at right angles to the circumferential direction ( There was a problem in that the ground gripping force was insufficient in response to the force acting in the lateral direction (lateral force) due to the horizontal grooves being parallel to each other, resulting in poor maneuverability.

斯る観点から、特開昭６０−３３１０４号公報で開示さ
れている不整地走行車両用空気入りタイヤがある。From this point of view, there is a pneumatic tire for vehicles traveling on rough terrain disclosed in Japanese Patent Application Laid-Open No. 60-33104.

（発明が解決しようとする問題点） ところで、前述刊行物記載のタイヤはそれなりの有用性
が認められるけれども、走行中の運動性（走破性）を低
下させないで牽引力の向上を図る点で今−歩であった。(Problems to be Solved by the Invention) By the way, although the tires described in the above-mentioned publications are recognized to be useful to some extent, there are currently no problems in terms of improving traction power without reducing maneuverability (drivability) during running. It was Ayumu.

（問題点を解決するための手段） 本発明は、中央部に位置するトレッド２が両サイドウオ
ール３ヘトロイダルに連なり、前記トレッド２の周上に
多数のブロック８が横方向に配列されかつ周方向に矢筈
模様に配列されているタイヤ１において、ブロック８の
形状及び配置パターンを工夫することによって、走行中
の運動性（走破性）を低下させないで牽引力の向上を図
ることを目的とし、この目的達成のために講じる技術的
手段は、前記ブロック８のそれぞれはタイヤ赤道線Ｌ−
Ｌに対する角度αが、９０°〈α１２５°とされており
、周方向に関してのブロック８の列が横方向にオーバラ
ップ１０されており、更にブロック８における回転方向
側の立上り角β、回転方向反対側の立上り角θとしたと
き、βがθより大きくされており、各ブロック８は回転
方向側に前記αと平行な直線状の蹴面部１１を有してお
り、タイヤ赤道側に近い各ブロック８の蹴面部１１の延
長平面１４に対して横方向に隣り合う各ブロック８の蹴
面部１１が回転方向側に突出しない部分に形成されてい
る点にある。(Means for Solving the Problems) The present invention has a tread 2 located in the center that is toroidally connected to both sidewalls 3, and a large number of blocks 8 arranged in the lateral direction on the circumference of the tread 2, and in the circumferential direction. In the tires 1 arranged in a herringbone pattern, the purpose is to improve the traction force without reducing the maneuverability (drivability) during running by devising the shape and arrangement pattern of the blocks 8. The technical measures taken to achieve this are such that each of the blocks 8 is aligned with the tire equator line L-
The angle α with respect to L is 90° < α125°, the rows of blocks 8 in the circumferential direction overlap 10 in the lateral direction, and the rising angle β of the blocks 8 on the rotational direction side and the opposite rotational direction When the rising angle θ on the side is set, β is larger than θ, and each block 8 has a linear kick surface 11 parallel to the α on the rotation direction side, and each block closer to the tire equator side The kicking surface 11 of each block 8 adjacent in the lateral direction with respect to the extension plane 14 of the kicking surface 11 of No. 8 is formed in a portion that does not protrude in the rotational direction.

（作　　用） タイヤ１が矢示９方向に回転駆動されると、各ブロック
８の蹴面部１１によって、泥、砂、雪等の路面上をかき
込み車両は走行される。(Function) When the tires 1 are rotationally driven in the direction of arrow 9, the kick surfaces 11 of each block 8 scrape mud, sand, snow, etc. on the road surface and the vehicle runs.

このさい、ブロック８は周方向に関し才の列が横方向に
オーバラップ１０されていることによって、ブロック８
が所謂不規則配置となって、牽引効果がいかなる接地面
部においても発揮される。At this time, the blocks 8 are arranged so that the rows of the blocks 8 overlap in the lateral direction in the circumferential direction.
are so-called irregularly arranged, and the traction effect is exerted on any contact surface.

また、各ブロック８はその回転方向側の立上り角βと回
転方向反対側の立上り角θとに角度差を有していること
から、泥、砂、雪上等の不整地での蹴面部１１において
は泥、砂等が非吸着性を発揮し、反蹴面部１２は、吸着
した泥、砂等が剥離し易くなり、これによって、牽引力
が低下することを防止している。In addition, since each block 8 has an angular difference between the rising angle β on the side in the rotation direction and the rising angle θ on the opposite side in the rotation direction, the kick surface portion 11 on the uneven ground such as mud, sand, snow, etc. The anti-kick surface 12 exhibits a non-adsorption property for mud, sand, etc., and the adsorbed mud, sand, etc. are easily peeled off from the anti-kick surface portion 12, thereby preventing the traction force from decreasing.

（実施例） 第１図および第２図において、１は空気入りタイヤであ
り、中央部に位置するトレッド２が両サイドウオール３
ヘトロイダルに連なり、ビード部４にはビードコア５を
有して、各ビードコア５はこれに巻上げられたカーカス
プライ６によって連結されている。(Example) In FIGS. 1 and 2, 1 is a pneumatic tire, and a tread 2 located in the center is attached to both sidewalls 3.
The bead portion 4 has bead cores 5 that are continuous in a heteroidal manner, and each bead core 5 is connected by a carcass ply 6 wound thereon.

このタイヤ１はゴムその他の弾性材料からなり、ビード
部４がリム７に嵌着され、図外のバルブ手段によって内
圧が０．１５　ｋｇ／ｃ＋Ｊ前後のように超低圧とされ
ている。This tire 1 is made of rubber or other elastic material, a bead portion 4 is fitted onto a rim 7, and the internal pressure is set to an extremely low pressure of about 0.15 kg/c+J by a valve means (not shown).

トレッド２には略平面矩形状とされた多数のラグ乃至ブ
ロック　（以下、ブロックで総称する）８が横方向に配
列されかつ周方向に矢筈模様に配列されている。　　　
′ ブロック８はタイヤ赤道線Ｌ−Ｌ上に位置する所謂中央
ブロックが平面への字形とされ、タイヤ回転方向９にお
ける周方向に所定ピッチの下で左右方向交互に角度αを
有して延びており、この中央ブロックの延長線上に本例
では左右に２ケと１ケの中間ブロックが角度αを有して
周方向交互に配置されることで、周方向に矢筈模様に配
置されている。On the tread 2, a large number of lugs or blocks (hereinafter collectively referred to as blocks) 8 having a generally rectangular planar shape are arranged in the lateral direction and arranged in a herringbone pattern in the circumferential direction.
' In the block 8, the so-called central block located on the tire equator line L-L is shaped like a plane, and extends at an angle α in the left and right directions alternately at a predetermined pitch in the circumferential direction in the tire rotation direction 9. In this example, on the extension line of this central block, two intermediate blocks and one intermediate block on the left and right are alternately arranged in the circumferential direction at an angle α, so that they are arranged in a herringbone pattern in the circumferential direction.

ここにおいて、角度α９０°〈α１２５°とされている
。すなわち、αが１２５°以上になると第４図、第５図
に示す如く路面等を受は流してしまい牽引力が低下する
からであり、αが９０°以下になると泥、砂、雪の路面
をかき込みすぎて、フローテーション効果が得られ難く
なって走破性、牽引性が急激に落込んでしまうからであ
る（第４図、第５図参照）。Here, the angle α90°<α125°. In other words, if α is 125° or more, the bearing will wash away the road surface, etc. as shown in Figures 4 and 5, and the traction force will decrease. If α is 90° or less, it will not be able to move on muddy, sandy, or snowy roads. This is because if it is pushed in too much, it becomes difficult to obtain a flotation effect, and running performance and traction performance drop sharply (see Figures 4 and 5).

ブロック８は第１図に示す如く周方向に関してのブロッ
ク列が横方向にオーパラ、７プ１０されており、ここに
、タイヤ１の回転駆動に伴ういかなる接地面でも牽引力
をタイヤ全周で発揮されるよう配慮されている。As shown in FIG. 1, the blocks 8 are arranged in rows of blocks in the circumferential direction in parallel rows 7 and 10 in the lateral direction, and the traction force can be exerted all around the tire on any contact surface caused by the rotational drive of the tire 1. care has been taken to ensure that

更に、いずれのブロック８においても、第３図で示す如
く断面形状において台形とされており、回転方向側にお
ける反面部１１の立上り角βは９３゜〜１３５°とされ
、回転方向反対側の反蹴面部となる立面部１２の立上り
角θは９０°〜１３０°とされている。Furthermore, each block 8 has a trapezoidal cross-sectional shape as shown in FIG. The rising angle θ of the elevated surface portion 12 serving as the kick surface is set to be 90° to 130°.

すなわち、β、−θ−３°〜２０°、θ＝９０°〜１３
２　°、β＝９３°〜１３５　　°とされており、この
ようにブロック断面傾斜角β、θに角度差をつけること
によって、泥、砂、雪上で反面部１１にあってはブロッ
ク８に泥、砂、雪が吸着しにくくなり、立面部１２にあ
っては、ブロック８に吸着した泥、砂、雪等を剥離を促
進し、ここに、タイヤ１に泥、砂等が吸着して牽引力が
低下されるのが防止されている。That is, β, -θ-3° ~ 20°, θ = 90° ~ 13
2 degrees, β = 93 degrees to 135 degrees, and by making a difference in the block cross-sectional inclination angles β and θ, it is possible to prevent mud from forming on the block 8 on the opposite side 11 on mud, sand, or snow. , sand, snow, etc. become difficult to adsorb, and in the vertical section 12, the mud, sand, snow, etc. adsorbed to the block 8 are promoted to peel off, and the mud, sand, etc. are adsorbed to the tire 1 and the traction force is increased. is prevented from being lowered.

なお、中間ブロックにあっては、第１図に符号１３で示
す如く突起部を形成することで、前述の効果を助長して
いる。In addition, the above-mentioned effect is promoted by forming a protrusion in the intermediate block as shown by the reference numeral 13 in FIG.

更に、ブロック８のそれぞれはいずれの反面部１１にあ
っても、角度αと平行な直線状の反面部１１を有してお
り、タイヤ赤道側に近い各ブロック８の反面部１１の延
長平面１４に対して横方向に隣り合う反面部１１は回転
方向側に突出しない部分に形成されている。Further, each of the blocks 8 has a linear opposite surface 11 parallel to the angle α, regardless of which opposite surface 11 it is located, and an extension plane 14 of the opposite surface 11 of each block 8 near the tire equator side. The opposite surface portion 11 that is adjacent in the lateral direction is formed in a portion that does not protrude in the rotational direction.

その他、図において、符号１５は回転方向に沿う溝であ
り、実質的にトレッド２の外周面上にブロック８を横方
向間隔を有して突出することで形成され、泥、砂、雪等
の詰まりをなくすのに寄与する。In addition, in the figure, reference numeral 15 denotes a groove along the rotation direction, which is formed by protruding blocks 8 substantially on the outer circumferential surface of the tread 2 at intervals in the lateral direction. Contributes to clearing blockages.

また、符号１６はタイヤショルダ部に形成された内周部
に凹み１７を有するリブ（突起）である。Further, reference numeral 16 is a rib (protrusion) formed in the tire shoulder portion and having a recess 17 on the inner peripheral portion.

なお、第１図において、符号１８で示すブロック群のタ
イヤ回転軸方向に隣接するブロック相互間で周方向ブロ
ック長さに対して、０．６９０倍に相当する周方向オフ
セット量を有し、符号１９のブロック群は同じ＜　０．
９５倍に相当するオフセット量を有している。In addition, in FIG. 1, there is a circumferential offset amount corresponding to 0.690 times the circumferential block length between blocks adjacent in the tire rotational axis direction of the block group indicated by reference numeral 18. 19 block groups are the same < 0.
It has an offset amount equivalent to 95 times.

次に、本発明実施例におけるタイヤと比較例におけるタ
イヤとを３輪バギー及び４輪バギー車の後輪に装着して
、硬土、泥、雪、砂での走破性、牽引性について評価し
たところ、次の通りであった。Next, the tire according to the example of the present invention and the tire according to the comparative example were attached to the rear wheels of a three-wheel buggy and a four-wheel buggy, and the running performance and traction performance on hard soil, mud, snow, and sand were evaluated. However, the situation was as follows.

次　　　　　　　葉 （発明の効果） 本発明は、以上の通りであり、トレンド２の周上に配置
されたブロック８のそれぞれはタイヤ赤道線Ｌ−Ｌに対
する角度αが、９０°＜α１２５°とされているので、
フローテーション効果を得ることができるばかりか牽引
力の低下も招くことがなく、ここに、不整地走行車両の
超低圧空気人タイヤとして有益である。Next (Effects of the Invention) The present invention is as described above, and each of the blocks 8 arranged on the circumference of the trend 2 has an angle α with respect to the tire equator line LL such that 90°<α125°. Because there are
Not only can a flotation effect be obtained, but there is no reduction in traction force, making it useful as an ultra-low pressure pneumatic tire for vehicles traveling on rough terrain.

また、周方向に関してのブロック８の列が横方向にオー
バラップ１０されていることから、接地面のいかなる位
置においても、牽引力を発揮することができる。Moreover, since the rows of blocks 8 in the circumferential direction overlap 10 in the lateral direction, traction force can be exerted at any position on the ground contact surface.

更に、ブロック８における回転方向側の立上り各β、回
転方向反対側の立上り角θとしたとき、βがθより大き
くされており、各ブロック８は回転方向側に前記αと平
行な直線状の蹴面部１１を有しており、タイヤ赤道側に
近い各ブロック８の蹴面部１１の延長平面１４に対して
軸方向に隣り合う各ブロック８の蹴面部１１が回転方向
側に突出しない部分に形成されていることから、蹴面部
１１では泥、雪等の吸着乃至付着が少な（、反蹴面部１
２にあっては、泥等の剥離促進がなされ、ここに、牽引
力の低下を招くことがない。Further, when each rising angle β on the rotation direction side of the block 8 and the rising angle θ on the opposite side of the rotation direction, β is larger than θ, and each block 8 has a straight line parallel to the α on the rotation direction side. The kick surface portion 11 of each block 8 adjacent to the axial direction is formed in a portion where the kick surface portion 11 of each block 8 adjacent to the axial direction does not protrude toward the rotation direction side with respect to the extension plane 14 of the kick surface portion 11 of each block 8 near the tire equator side. Therefore, the kick surface part 11 attracts or adheres little mud, snow, etc. (and the opposite kick surface part 1
In No. 2, the removal of mud and the like is promoted without causing a decrease in traction force.

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

第１図は本発明実施例によるタイヤトレッドの一部を示
す平面図、第２図は同タイヤの断面図、第３図はブロッ
クの断面図、第４図は硬±（普通路面）時における角度
αを走破性、牽引性を行数との関係グラフ、第５図は同
じく不整地（泥、砂、雪）路面時の関係グラフである。 １・・・タイヤ、２・・・トレンド、３・・・サイドウ
オール、１１・・・蹴面部。 特　許　出　願　人　オーツタイヤ株式会社手　統　補
　七番（自発） 昭和６０年８月８日 昭和６０年　　特許願第１４３０４３号２、発明の名称 不整地走行車両用”２ＩＬ入りタイで ３、補正をする者 事件との関係　持許出願人 オーツタイヤ株式会社 ４代理人 住　所　　大阪府東大阪市御厨１０１３番地　Ｕ大阪＋
０６１７８２１　（’ｂ　８　ｉ　Ａ　ニア、補正の内
容 次　　葉 ７、　補正の内容 ＋１３　　明細書の特許請求の範囲は別紙の通り補正す
る。 （２１明細書第４頁第１１行目、第６頁第２０行目、第
１０頁ｒから第４行目のｒ９０’（α１２５°」は、そ
れぞれ次の通り補正する。 記 「９０°くα≦１２５°Ｉ ＋３１　　ＦＩＡ細書第４頁第１７行目、第８頁第１２
行目、第１１Ｒ第９行目の「と平行な直線状の」は、「
の角度を持った」とそれぞれ補正する。 （４１明細書第７頁第１行目のｒｘｚｏ’以上になる」
は、ｒ１２０″Ｃｔ−越える」と補正する。 （５）　添付図面中、第１図は別紙の通り補正する。 ２特許請求の範囲 １、　中央部に位置するトレッドが両サイドフォールヘ
トロイダルに連なり、前記トレッドの周上に事故のブロ
ックが横方向に配列されかつ周方向に矢筈模様に配列さ
れているタイヤにおいて、前記ブロック８のそれぞれは
タイヤ赤道線り一りに対する角度αが、９０°くα≦１
２５°とされており、周方向に関してのブロック８０列
が横方向にオーバラップ１０されており、更にブロック
８における回転方向側の立上り角β、回転方向反対側の
立上り角−としたとき、βが−より太き（されており、
各ブロック８は回転方向側に前記αの角度を持った蹴面
部１ｌｔ−有しており、タイヤ赤道側に近い各ブロック
８の蹴［ｆｉ部１１の延長乎［ｆｌ１４に対して横方向
に隣り合う各ブロック８の蹴面耶１１が回転方向側に突
出しない部分に形成されていることを特徴とする不整地
走行車両用空気人りタイτ。 第１図Fig. 1 is a plan view showing a part of a tire tread according to an embodiment of the present invention, Fig. 2 is a sectional view of the same tire, Fig. 3 is a sectional view of a block, and Fig. 4 is a plan view showing a part of the tire tread according to an embodiment of the present invention. A graph showing the relationship between the angle α and the running performance and the traction ability with the number of lines, and FIG. 5 is a graph showing the relationship when the road surface is uneven (mud, sand, snow). 1...Tire, 2...Trend, 3...Side wall, 11...Kick surface part. Patent Applicant Otsu Tire Co., Ltd. Hand Control No. 7 (Voluntary) August 8, 1985 1985 Patent Application No. 143043 2, Title of Invention: “For rough terrain vehicles” 2, Amendment with IL-containing tie 3 Relationship with the case of a person who has a license Applicant Oats Tire Co., Ltd. 4 Agent Address 1013 Mikuriya, Higashiosaka City, Osaka Prefecture U Osaka +
0617821 ('b 8 i A Near, Contents of Amendment Next Page 7, Contents of Amendment +13 The claims of the specification are amended as shown in the attached sheet. (21 Specification, page 4, line 11, page 6 The r90' (α125°) on the 20th line, page 10 r to the 4th line will be corrected as follows: "90° × α≦125°I +31 FIA specification, page 4, line 17, Page 8 No. 12
In line 11R, line 9, “in a straight line parallel to” means “
``with an angle of '', respectively. (It will be more than rxzo' on page 7, line 1 of specification 41.)
is corrected as ``exceeds r120''Ct-''. (5) In the attached drawings, Figure 1 is amended as shown in the attached sheet. 2 Claim 1: In a tire in which a tread located in the center is continuous in a toroidal manner with both side falls, and accident blocks are arranged laterally on the circumference of the tread and arranged in a herringbone pattern in the circumferential direction. , each of the blocks 8 has an angle α with respect to the tire equator line of 90° and α≦1.
25 degrees, 80 rows of blocks in the circumferential direction overlap 10 in the lateral direction, and when the rising angle β on the rotation direction side of the block 8 and the rising angle on the opposite side in the rotation direction -, β is - thicker (is,
Each block 8 has a kick surface part 1lt- having an angle of α on the rotation direction side, and the kick surface part 1lt- of each block 8 near the tire equator side is an extension of the fi part 11 [laterally adjacent to fl14]. The pneumatic tie τ for an all-terrain vehicle is characterized in that the kick surfaces 11 of each matching block 8 are formed in a portion that does not protrude in the direction of rotation. Figure 1

Claims (1)

【特許請求の範囲】[Claims] １、中央部に位置するトレッドが両サイドウォールへト
ロイダルに連なり、前記トレッドの周上に多数のブロッ
クが横方向に配列されかつ周方向に矢筈模様に配列され
ているタイヤにおいて、前記ブロック８のそれぞれはタ
イヤ赤道線Ｌ−Ｌに対する角度αが、９０°＜α１２５
°とされており、周方向に関してのブロック８の列が横
方向にオーバラップ１０されており、更にブロック８に
おける回転方向側の立上り角β、回転方向反対側の立上
り角θとしたとき、βがθより大きくされており、各ブ
ロック８は回転方向側に前記αと平行な直線状の蹴面部
１１を有しており、タイヤ赤道側に近い各ブロック８の
蹴面部１１の延長平面１４に対して横方向に隣り合う各
ブロック８の蹴面部１１が回転方向側に突出しない部分
に形成されていることを特徴とする不整地走行車両用空
気入りタイヤ。1. In a tire in which a tread located in the center is toroidally connected to both sidewalls, and a large number of blocks are arranged laterally on the circumference of the tread and arranged in a herringbone pattern in the circumferential direction, the blocks 8 In each case, the angle α with respect to the tire equator line LL is 90°<α125
If the rows of blocks 8 in the circumferential direction overlap 10 in the horizontal direction, and the rising angle β on the rotational direction side of the blocks 8 and the rising angle θ on the opposite side in the rotational direction, β is larger than θ, and each block 8 has a linear kick surface 11 parallel to α on the rotation direction side, and an extension plane 14 of the kick surface 11 of each block 8 near the tire equator side A pneumatic tire for an all-terrain vehicle, characterized in that the kick surfaces 11 of the laterally adjacent blocks 8 are formed in portions that do not protrude in the rotational direction.
JP60143043A 1985-06-28 1985-06-28 Pneumatic tire for vehicle running on rough ground Granted JPS624611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60143043A JPS624611A (en) 1985-06-28 1985-06-28 Pneumatic tire for vehicle running on rough ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60143043A JPS624611A (en) 1985-06-28 1985-06-28 Pneumatic tire for vehicle running on rough ground

Publications (2)

Publication Number Publication Date
JPS624611A true JPS624611A (en) 1987-01-10
JPH0476802B2 JPH0476802B2 (en) 1992-12-04

Family

ID=15329577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60143043A Granted JPS624611A (en) 1985-06-28 1985-06-28 Pneumatic tire for vehicle running on rough ground

Country Status (1)

Country Link
JP (1) JPS624611A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106115A (en) * 1986-10-24 1988-05-11 Yokohama Rubber Co Ltd:The Tyre for motorcycle
JPH01160710A (en) * 1987-12-17 1989-06-23 Bridgestone Corp Pneumatic tire for uneven ground
JPH02189206A (en) * 1989-01-17 1990-07-25 Sumitomo Rubber Ind Ltd Tire capable of also running on soft land
US6533007B1 (en) * 2000-03-02 2003-03-18 Mcmannis Lee A. Tire having sidewall extensions at opposite ends of each tread element
CN103144501A (en) * 2011-12-06 2013-06-12 东洋橡胶工业株式会社 Pneumatic radial tire
JP2013212840A (en) * 2013-07-18 2013-10-17 Sumitomo Rubber Ind Ltd Pneumatic tire for irregular ground running
EP3013605B1 (en) * 2013-06-28 2018-05-16 Compagnie Générale des Etablissements Michelin Tyre
US20180147892A1 (en) * 2016-11-25 2018-05-31 Sumitomo Rubber Industries, Ltd. Tire for running on rough terrain

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53109309A (en) * 1977-03-03 1978-09-25 Michelin & Cie Outer skin of tire
JPS5724244A (en) * 1980-05-01 1982-02-08 Iiieiiaaru Corp Sound absorbing laminated structure
JPS58152604A (en) * 1982-03-04 1983-09-10 Bridgestone Corp Running tire for irregular ground
JPS6033104A (en) * 1983-08-02 1985-02-20 Bridgestone Corp Pneumatic tire for bumpy road driving car
JPS60107402A (en) * 1983-11-16 1985-06-12 Honda Motor Co Ltd Superlow-pressure tire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53109309A (en) * 1977-03-03 1978-09-25 Michelin & Cie Outer skin of tire
JPS5724244A (en) * 1980-05-01 1982-02-08 Iiieiiaaru Corp Sound absorbing laminated structure
JPS58152604A (en) * 1982-03-04 1983-09-10 Bridgestone Corp Running tire for irregular ground
JPS6033104A (en) * 1983-08-02 1985-02-20 Bridgestone Corp Pneumatic tire for bumpy road driving car
JPS60107402A (en) * 1983-11-16 1985-06-12 Honda Motor Co Ltd Superlow-pressure tire

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106115A (en) * 1986-10-24 1988-05-11 Yokohama Rubber Co Ltd:The Tyre for motorcycle
JPH01160710A (en) * 1987-12-17 1989-06-23 Bridgestone Corp Pneumatic tire for uneven ground
US5318086A (en) * 1987-12-17 1994-06-07 Bridgestone Corporation Pneumatic off-the-road tires
JPH02189206A (en) * 1989-01-17 1990-07-25 Sumitomo Rubber Ind Ltd Tire capable of also running on soft land
US6533007B1 (en) * 2000-03-02 2003-03-18 Mcmannis Lee A. Tire having sidewall extensions at opposite ends of each tread element
CN103144501A (en) * 2011-12-06 2013-06-12 东洋橡胶工业株式会社 Pneumatic radial tire
US9254718B2 (en) 2011-12-06 2016-02-09 Toyo Tire & Rubber Co., Ltd. Pneumatic radial tire
EP3013605B1 (en) * 2013-06-28 2018-05-16 Compagnie Générale des Etablissements Michelin Tyre
US9987886B2 (en) 2013-06-28 2018-06-05 Compagnie Generale Des Etablissements Michelin Tire
JP2013212840A (en) * 2013-07-18 2013-10-17 Sumitomo Rubber Ind Ltd Pneumatic tire for irregular ground running
US20180147892A1 (en) * 2016-11-25 2018-05-31 Sumitomo Rubber Industries, Ltd. Tire for running on rough terrain
US10953699B2 (en) * 2016-11-25 2021-03-23 Sumitomo Rubber Industries, Ltd. Tire for running on rough terrain

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