JP2007008303A - Pneumatic tire - Google Patents

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JP2007008303A
JP2007008303A JP2005191081A JP2005191081A JP2007008303A JP 2007008303 A JP2007008303 A JP 2007008303A JP 2005191081 A JP2005191081 A JP 2005191081A JP 2005191081 A JP2005191081 A JP 2005191081A JP 2007008303 A JP2007008303 A JP 2007008303A
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sipe
pneumatic tire
width direction
wide
tread surface
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JP4526081B2 (en
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Toshiyuki Ohashi
稔之 大橋
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To suppress the reduction of a sipe opening and secure edge effect and water removing effect and improve performance on ice such as braking performance. <P>SOLUTION: A plurality of grooves are formed in a tread surface and blocks and/or ribs are formed by the grooves, and sipes are formed in the blocks and/or the ribs in a pneumatic tire. The sipes 11 are provided with a plurality of wide parts 12 extending in a length direction L of the sipe. Preferably, the wide parts 12 are arranged on both sides in a width direction W of the sipe 11, and more preferably are alternately arranged on both the sides in a width direction W of the sipe 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ブロック及び／又はリブにサイプが刻まれた空気入りタイヤに関し、より詳しくはサイプ開口部が狭くなることを抑制し、除水効果及びエッジ効果を確保しアイス性能の向上を図った空気入りタイヤに関する。   The present invention relates to a pneumatic tire in which sipes are engraved on blocks and / or ribs, and more specifically, the narrowing of the sipe opening is suppressed, and a water removal effect and an edge effect are ensured to improve ice performance. Related to pneumatic tires.

空気入りタイヤにおいて、主溝や横溝の他にトレッド表面に更に幅の狭いサイプを切り刻んで、排水性を向上させてきた。また、氷雪路の走行を目的としたスタッドレスタイヤにおいては、更に多くのサイプを刻み、該サイプにより除水効果及びエッジ効果を発揮させ、制動・駆動性能及び旋回性能を向上させてきた。   In a pneumatic tire, in addition to main grooves and lateral grooves, a narrower sipe has been cut on the tread surface to improve drainage. Further, in studless tires intended for running on icy and snowy roads, more sipes are carved out, and the water removal effect and edge effect are exhibited by the sipe to improve braking / driving performance and turning performance.

図１（ｂ）に示すように、サイプ２１は深さ方向に一定の厚みで刻まれることが多かった。例えば、タイヤ幅方向に刻まれたサイプは、制動時になどにおいて負荷される前後力によりブロックが倒れ込み、サイプ２１のエッジ効果により制動力が増大する。また、サイプ内に水が浸入するので、除水効果が発揮される。例えば、特許文献１に開示された空気入りタイヤが知られている。
特開平１１−４２９１３号公報（図２、３） As shown in FIG. 1B, the sipe 21 is often engraved with a certain thickness in the depth direction. For example, in the sipe carved in the tire width direction, the block collapses due to the longitudinal force applied during braking, and the braking force increases due to the edge effect of the sipe 21. Moreover, since water permeates into the sipe, the water removal effect is exhibited. For example, a pneumatic tire disclosed in Patent Document 1 is known.
Japanese Patent Laid-Open No. 11-42913 (FIGS. 2 and 3)

ゴムは非圧縮性であるので、タイヤが荷重を受けたときに、トレッド表面が動き易くなりサイプの開口部が狭くなってしまう。特に、氷雪路面などの摩擦係数の低い路面においては滑り易いので、トレッド表面がより動き易くサイプの開口部２２が狭くなり易い。その結果、サイプが本来発揮すべきエッジ効果や除水効果が低下することがあった。   Since rubber is incompressible, when the tire receives a load, the tread surface easily moves and the opening of the sipe becomes narrow. In particular, the road surface with a low coefficient of friction such as an icy and snowy road surface is slippery, so that the tread surface is easier to move and the sipe opening 22 is likely to be narrow. As a result, the edge effect and water removal effect that Sipe should originally exhibit may be reduced.

特許文献１の空気入りタイヤにおいては、サイプの厚みを他の部分より厚くした、深さ方向に延びる広幅部をサイプに設けている。しかし、これはサイプ底のクラック防止と偏摩耗の抑制を目的とするものであり、上記問題を解決するものではなかった。   In the pneumatic tire of Patent Literature 1, a sipe is provided with a wide portion extending in the depth direction in which the sipe is thicker than other portions. However, this is aimed at preventing cracks at the sipe bottom and suppressing uneven wear, and has not solved the above problems.

したがって、本発明の目的は、サイプ開口部の狭小化を抑制し、エッジ効果や除水効果を確保し、制動性能などのアイス性能を向上させることにある。   Accordingly, an object of the present invention is to suppress the narrowing of the sipe opening, ensure an edge effect and a water removal effect, and improve ice performance such as braking performance.

上記課題を解決するため、本発明の空気入りタイヤは、トレッド表面に複数の溝が刻まれ、前記溝によりブロック及び／又はリブが形成され、前記ブロック及び／又はリブにサイプが刻まれた空気入りタイヤにおいて、前記サイプは、サイプ長さ方向に延びる、複数の幅広部を備えたことを特徴とする。   In order to solve the above-described problems, the pneumatic tire of the present invention is a pneumatic tire in which a plurality of grooves are formed on the tread surface, blocks and / or ribs are formed by the grooves, and sipes are formed on the blocks and / or ribs. In the entering tire, the sipe includes a plurality of wide portions extending in a sipe length direction.

サイプ長さ方向に延びる、複数の幅広部をサイプに設けることにより、トレッドゴムがサイプ深さ方向にたわみ易くなる。トレッドゴムが荷重を受けたときに、該幅広部が荷重による変形を吸収することができる。その結果、トレッド表面において、サイプ開口部の動きが抑制され、サイプ開口部の狭小化を抑制できる。サイプの除水効果やエッジ効果を確保できる。   By providing the sipe with a plurality of wide portions extending in the sipe length direction, the tread rubber is easily bent in the sipe depth direction. When the tread rubber receives a load, the wide portion can absorb deformation due to the load. As a result, movement of the sipe opening is suppressed on the tread surface, and narrowing of the sipe opening can be suppressed. The water removal effect and edge effect of sipe can be secured.

本発明の空気入りタイヤは、前記幅広部は、前記サイプの幅方向両側に配置されていることを特徴とする。   The pneumatic tire according to the present invention is characterized in that the wide portion is disposed on both sides in the width direction of the sipe.

幅広部をサイプの幅方向両側に配置することにより、いずれの方向の荷重に対してもトレッドゴムがサイプ深さ方向によりたわみ易くなる。更に、サイプ開口部の狭小化を防止できる。   By disposing the wide portions on both sides in the width direction of the sipe, the tread rubber is easily bent in the sipe depth direction with respect to a load in any direction. Furthermore, the narrowing of the sipe opening can be prevented.

本発明の空気入りタイヤは、前記幅広部は、前記サイプの幅方向両側に交互に配置されていることを特徴とする。   The pneumatic tire according to the present invention is characterized in that the wide portions are alternately arranged on both sides in the width direction of the sipe.

上記の効果に加えて、幅広部がサイプの幅方向両側に交互に配置されているので、サイプ幅が急激に大きくなることが防止される。その結果、偏摩耗などの不具合を防止することができる。   In addition to the above effects, the wide portions are alternately arranged on both sides in the width direction of the sipe, so that the sipe width is prevented from increasing rapidly. As a result, problems such as uneven wear can be prevented.

本発明の空気入りタイヤは、前記サイプは、トレッド表面に現れる形状が波形部を含む波形サイプであることを特徴とする。   In the pneumatic tire of the present invention, the sipe is a corrugated sipe in which a shape appearing on a tread surface includes a corrugated portion.

サイプがトレッド表面に現れる形状を、波形部を含む形状とすることにより、サイプのエッジ効果を更に高めることができる。また、トレッド表面が変形しても、更にサイプの開口部が狭くなり難くなるので、サイプの除水効果やエッジ効果を確保できる。   By making the shape of the sipe appearing on the tread surface into a shape including a corrugated portion, the edge effect of the sipe can be further enhanced. Moreover, even if the tread surface is deformed, the sipe opening is less likely to become narrower, so that the water removal effect and edge effect of the sipe can be ensured.

本発明の空気入りタイヤは、前記幅広部の高さの総和は、前記サイプ深さの１０％〜９０％であることを特徴とする。   The pneumatic tire according to the present invention is characterized in that a total height of the wide portion is 10% to 90% of the sipe depth.

１本のサイプにおいて、幅広部の高さの総和が、サイプ深さの１０％未満であると、サイプ開口部の狭小化を抑制する効果が小さくなる。逆に、９０％を超えると、サイプの容積が大きくなり、ブロックなどの剛性が低下しすぎて倒れこみが大きくなり、ブロックなどの接地面積の低下を招く。その結果、アイス性能などの性能が低下することがある。   In one sipe, when the total height of the wide portions is less than 10% of the sipe depth, the effect of suppressing the narrowing of the sipe opening is reduced. On the other hand, if it exceeds 90%, the volume of the sipe increases, the rigidity of the block or the like decreases too much, and the collapse of the block increases, resulting in a decrease in the ground contact area of the block or the like. As a result, performance such as ice performance may be degraded.

本発明の空気入りタイヤは、前記サイプの密度は、０．０５ｍｍ／ｍｍ２以上であることを特徴とする。 The pneumatic tire of the present invention is characterized in that the density of the sipe is 0.05 mm / mm 2 or more.

サイプ密度が０．０５ｍｍ／ｍｍ２未満であると、サイプが少なすぎて、サイプにより効果が発揮しないことがある。なお、ブロックなどの剛性を確保する観点から、サイプ密度は０．２ｍｍ／ｍｍ２を超えないことが好ましい。 If the sipe density is less than 0.05 mm / mm 2 , the sipe may be too small and the effect may not be exhibited by the sipe. In addition, it is preferable that a sipe density does not exceed 0.2 mm / mm < 2 > from a viewpoint of ensuring rigidity, such as a block.

以下、図面を用いて、本発明に係る空気入りタイヤの実施形態を説明する。以下、ブロックにサイプを刻んだ例を示すが、リブにサイプを刻んだ場合においても同様効果が得られる。図１（ａ）は、本発明に係る空気入りタイヤに刻まれたサイプを示す斜視図である。サイプ１１は直線状の開口部１２を有し、ブロック（図示しない）に刻まれている。   Hereinafter, embodiments of a pneumatic tire according to the present invention will be described with reference to the drawings. Hereinafter, an example in which a sipe is engraved on the block will be described. Fig.1 (a) is a perspective view which shows the sipe carved in the pneumatic tire which concerns on this invention. The sipe 11 has a linear opening 12 and is cut into a block (not shown).

サイプ１１は、サイプの長さ方向Ｌに延びる幅広部１３を備えている。幅広部１３は複数あり、サイプ幅方向Ｗの両側に２つずつ左右交互に配置されている。したがって、サイプ深さ方向に進むにつれ、サイプの１の幅が厚い部分が離散的に現れる構成となっている。   The sipe 11 includes a wide portion 13 that extends in the length direction L of the sipe. There are a plurality of wide portions 13, and two wide portions 13 are alternately arranged on the left and right sides on both sides in the sipe width direction W. Therefore, as the sipe depth direction advances, the thicker portions of the sipe 1 appear discretely.

かかるサイプの構成により、トレッドゴムがサイプ深さ方向にたわみ易くなる。トレッドゴムが荷重を受けたときに、幅広部１３が荷重による変形を吸収することができる。その結果、トレッド表面において、サイプ開口部１２の動きが抑制され、サイプ開口部１２の狭小化を防止でき、サイプ１１の除水効果やエッジ効果を確保できる。   With such a sipe configuration, the tread rubber is easily bent in the sipe depth direction. When the tread rubber receives a load, the wide portion 13 can absorb deformation due to the load. As a result, the movement of the sipe opening 12 is suppressed on the tread surface, the narrowing of the sipe opening 12 can be prevented, and the water removal effect and edge effect of the sipe 11 can be secured.

幅広部１３をサイプ幅方向Ｗの左右両側に設けることにより、いずれの方向から荷重に対してもトレッドゴムがサイプ深さ方向にたわみ易くなる。特に、図示したように、サイプ幅方向Ｗの左右交互に幅広部１３を配置することが好ましい。   By providing the wide portions 13 on both the left and right sides in the sipe width direction W, the tread rubber is easily bent in the sipe depth direction from any direction. In particular, as shown in the drawing, it is preferable to arrange the wide portions 13 alternately on the left and right in the sipe width direction W.

幅広部１３の高さＨ１は、０．３ｍｍ〜２．５ｍｍが好ましい。また、幅広部１３の高さのＨ１の総和は、サイプ深さＨの１０％〜９０％が好ましい。幅広部１３の高さＨ１が０．３ｍｍ未満であったり、高さＨ１の総和がサイプ深さＨの１０％未満であったりすると、サイプ１１の開口部１２の狭小化を抑制する効果が低くなることがある。逆に、幅広部１３の高さＨ１が２．５ｍｍを超えたり、高さＨ１の総和がサイプ深さＨの９０％を超えたりすると、ブロックの剛性が低下しブロックの倒れ込みが大きくなる。その結果、接地面積の低下を招き、タイヤの性能が低下することがある。   The height H1 of the wide portion 13 is preferably 0.3 mm to 2.5 mm. The total sum of the heights H1 of the wide portions 13 is preferably 10% to 90% of the sipe depth H. If the height H1 of the wide portion 13 is less than 0.3 mm, or the sum of the heights H1 is less than 10% of the sipe depth H, the effect of suppressing the narrowing of the opening 12 of the sipe 11 is low. May be. On the contrary, if the height H1 of the wide portion 13 exceeds 2.5 mm, or the total sum of the heights H1 exceeds 90% of the sipe depth H, the rigidity of the block decreases and the collapse of the block increases. As a result, the contact area may be reduced, and the tire performance may be reduced.

特に限定されないが、例えばサイプ１１の厚みｔが０．３ｍｍ〜０．５ｍｍのときに対して、幅広部１３の突出高さｄは、０．３ｍｍ〜１．２ｍｍとすることが好ましく、０．３ｍｍ〜０．７ｍｍがより好ましい。   Although not particularly limited, for example, when the thickness t of the sipe 11 is 0.3 mm to 0.5 mm, the protruding height d of the wide portion 13 is preferably 0.3 mm to 1.2 mm. 3 mm to 0.7 mm is more preferable.

サイプ１１はトレッド表面に現れる形状が波形部を含む波形サイプであれば、より好ましい。波形部によりサイプ１１のエッジ効果を更に高めることができ、トレッド表面が変形しても、更にサイプの開口部１２が狭くなり難くなるので、サイプ１１の除水効果やエッジ効果を確保できる。   The sipe 11 is more preferable if the shape appearing on the tread surface is a waveform sipe including a waveform portion. The edge effect of the sipe 11 can be further enhanced by the corrugated portion, and even if the tread surface is deformed, the opening portion 12 of the sipe is hardly further narrowed.

サイプ１１は、両端が開口したオープンサイプ、両端が閉塞したクローズドサイプ、片端のみが開口した片オープンサイプでもよい。また、サイプが延びる方向は、タイヤ幅方向、タイヤ周方向や斜め方向に刻んでもよい。   The sipe 11 may be an open sipe with both ends open, a closed sipe with both ends closed, or a single open sipe with only one end open. The direction in which the sipe extends may be inscribed in the tire width direction, the tire circumferential direction, or the oblique direction.

なお、幅広部１３はトレッド面に対して平行に延びていなくてもよい。また、直線上でなくても波打った形状であってもよい。   In addition, the wide part 13 does not need to extend in parallel with the tread surface. Further, it may be a wavy shape rather than a straight line.

実施例として本発明に係る空気入りタイヤ及び従来例に係る空気入りタイヤをそれぞれ試作して性能評価を行った。いずれのタイヤも、図２にように、タイヤ周方向Ｒに延びる主溝２と、主溝２を連通する横溝３によりブロック４が形成されたトレッド１を備える。そして、ブロック４には波形サイプ６が刻まれている。   As an example, a pneumatic tire according to the present invention and a pneumatic tire according to a conventional example were prototyped and performance evaluation was performed. As shown in FIG. 2, each tire includes a tread 1 in which a block 4 is formed by a main groove 2 extending in the tire circumferential direction R and a lateral groove 3 communicating with the main groove 2. The block 4 is engraved with a waveform sipe 6.

実施例のサイプは、図１（ａ）に示したように、幅方向Wの左右両側に２つずつ交互に幅広部を備えている。幅広部の高さＨ１は１ｍｍ、サイプの深さHは６ｍｍである。従来例のサイプは、図１（ｂ）に示したように、幅広部を備えていないサイプで、サイプの深さHは６ｍｍである。いずれのタイヤサイズは２０５／６Ｒ１５で、３０００ｃｃＦＲセダン型乗用車に装着して性能評価を行った。   As shown in FIG. 1A, the sipe according to the embodiment includes two wide portions alternately on the left and right sides in the width direction W. The width H1 of the wide portion is 1 mm, and the sipe depth H is 6 mm. As shown in FIG. 1B, the conventional sipe is a sipe that does not include a wide portion, and the sipe depth H is 6 mm. Each tire size was 205 / 6R15, and performance evaluation was performed by attaching it to a 3000 cc FR sedan type passenger car.

表1において、アイス性能は、アイス路面上を時速４０ｋｍからのＡＢＳ制動距離の逆数である。アイス旋回は、レムニスケート曲線（８の字）のアイス路面コースを走行したときのラップタイムの逆数を示す。いずれも比較例を１００とした指数で表し、数字が大きいほど性能が良いことを示す。   In Table 1, the ice performance is the reciprocal of the ABS braking distance from 40 km / h on the ice road surface. The ice turning indicates the reciprocal of the lap time when the ice road course of the Lemnis skating curve (character 8) is run. All are represented by an index with the comparative example being 100, and the larger the number, the better the performance.

Figure 2007008303
Figure 2007008303

表１によれば、実施例のタイヤでは、サイプの開口部の狭小化が抑制されているので、除水効果やエッジ効果が確保され、比較例に比べて、アイス制動性能及びアイス旋回性能が向上されている。   According to Table 1, in the tire of the example, the narrowing of the opening portion of the sipe is suppressed, so that the water removal effect and the edge effect are ensured, and the ice braking performance and the ice turning performance are improved as compared with the comparative example. Has been improved.

（ａ）は本発明に係る空気入りタイヤのサイプの斜視図、（ｂ）は従来例に係る空気入りタイヤのサイプの斜視図をそれぞれ示す。(A) is a perspective view of the sipe of the pneumatic tire which concerns on this invention, (b) shows the perspective view of the sipe of the pneumatic tire which concerns on a prior art example, respectively. 本発明に係る空気入りタイヤのパターン展開図を示す。The pattern development view of the pneumatic tire concerning the present invention is shown.

符号の説明Explanation of symbols

１ トレッド
２ 主溝
３ 横溝
４ ブロック
１１、２１ サイプ
１２、２２ サイプの開口部
１３ 幅広部
DESCRIPTION OF SYMBOLS 1 Tread 2 Main groove 3 Horizontal groove 4 Block 11, 21 Sipe 12, 22 Sipe opening 13 Wide part

Claims (6)

トレッド表面に複数の溝が刻まれ、前記溝によりブロック及び／又はリブが形成され、前記ブロック及び／又はリブにサイプが刻まれた空気入りタイヤにおいて、
前記サイプは、サイプ長さ方向に延びる、複数の幅広部を備えたことを特徴とする空気入りタイヤ。 In the pneumatic tire in which a plurality of grooves are cut on the tread surface, blocks and / or ribs are formed by the grooves, and sipes are cut on the blocks and / or ribs.
The sipe includes a plurality of wide portions extending in a sipe length direction. 前記幅広部は、前記サイプの幅方向両側に配置されていることを特徴とする請求項１に記載の空気入りタイヤ。   The pneumatic tire according to claim 1, wherein the wide portion is disposed on both sides in the width direction of the sipe. 前記幅広部は、前記サイプの幅方向両側に交互に配置されていることを特徴とする請求項２に記載の空気入りタイヤ。   The pneumatic tire according to claim 2, wherein the wide portions are alternately arranged on both sides in the width direction of the sipe. 前記サイプは、トレッド表面に現れる形状が波形部を含む波形サイプであることを特徴とする請求項１乃至３のいずれかに記載の空気入りタイヤ。   The pneumatic tire according to any one of claims 1 to 3, wherein the sipe is a corrugated sipe in which a shape appearing on a tread surface includes a corrugated portion. 前記幅広部の高さの総和は、前記サイプ深さの１０％〜９０％であることを特徴とする請求項１乃至４のいずれかに記載の空気入りタイヤ。   The pneumatic tire according to any one of claims 1 to 4, wherein the total height of the wide portions is 10% to 90% of the sipe depth. 前記サイプの密度は、０．０５ｍｍ／ｍｍ２以上であることを特徴とする請求項１乃至５のいずれかに記載の空気入りタイヤ。 The pneumatic tire according to any one of claims 1 to 5, wherein a density of the sipe is 0.05 mm / mm 2 or more.
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DE102008024983A1 (en) 2007-05-29 2008-12-04 Toyo Tire & Rubber Co., Ltd. tire
DE102008035238A1 (en) 2007-08-24 2009-02-26 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
DE102008039069A1 (en) 2007-09-26 2009-04-02 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
DE102008062610A1 (en) 2007-12-28 2009-07-02 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
JP2009154649A (en) * 2007-12-26 2009-07-16 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2009292382A (en) * 2008-06-06 2009-12-17 Toyo Tire & Rubber Co Ltd Pneumatic tire
DE102010012595A1 (en) 2009-03-26 2010-09-30 Toyo Tire & Rubber Co., Ltd. tire
JP2012510916A (en) * 2008-12-05 2012-05-17 ソシエテ ド テクノロジー ミシュラン Tire tread with incision with protrusion
JP2016130078A (en) * 2015-01-14 2016-07-21 住友ゴム工業株式会社 Pneumatic tire
JP2017087861A (en) * 2015-11-05 2017-05-25 東洋ゴム工業株式会社 Pneumatic tire
CN107031301A (en) * 2015-11-05 2017-08-11 东洋橡胶工业株式会社 Pneumatic tire
CN107053959A (en) * 2015-11-05 2017-08-18 东洋橡胶工业株式会社 Pneumatic tire

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DE102008024983A1 (en) 2007-05-29 2008-12-04 Toyo Tire & Rubber Co., Ltd. tire
US8171969B2 (en) 2007-05-29 2012-05-08 Toyo Tire & Rubber Co., Ltd. Pneumatic tire
DE102008024983B4 (en) 2007-05-29 2018-07-19 Toyo Tire & Rubber Co., Ltd. tire
JP2008296613A (en) * 2007-05-29 2008-12-11 Toyo Tire & Rubber Co Ltd Pneumatic tire
DE102008035238A1 (en) 2007-08-24 2009-02-26 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
US8544512B2 (en) 2007-08-24 2013-10-01 Toyo Tire & Rubber Co., Ltd. Pneumatic tire with tread having sipe
DE102008035238B4 (en) * 2007-08-24 2014-11-06 Toyo Tire & Rubber Co., Ltd. tire
DE102008039069B4 (en) * 2007-09-26 2012-02-02 Toyo Tire & Rubber Co., Ltd. tire
DE102008039069A1 (en) 2007-09-26 2009-04-02 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
US8640751B2 (en) 2007-09-26 2014-02-04 Toyo Tire & Rubber Co., Ltd. Pneumatic tire with tread having sipes
JP2009154649A (en) * 2007-12-26 2009-07-16 Yokohama Rubber Co Ltd:The Pneumatic tire
DE102008062610A1 (en) 2007-12-28 2009-07-02 Toyo Tire & Rubber Co., Ltd., Osaka-shi tire
US20090165911A1 (en) * 2007-12-28 2009-07-02 Toyo Tire & Rubber Co., Ltd Pneumatic tire
DE102008062610B4 (en) * 2007-12-28 2015-01-08 Toyo Tire & Rubber Co., Ltd. tire
JP4688903B2 (en) * 2008-06-06 2011-05-25 東洋ゴム工業株式会社 Pneumatic tire
JP2009292382A (en) * 2008-06-06 2009-12-17 Toyo Tire & Rubber Co Ltd Pneumatic tire
JP2012510916A (en) * 2008-12-05 2012-05-17 ソシエテ ド テクノロジー ミシュラン Tire tread with incision with protrusion
US8733412B2 (en) 2009-03-26 2014-05-27 Toyo Tire & Rubber Co., Ltd. Pneumatic tire with sipe having concave grooves
DE102010012595A1 (en) 2009-03-26 2010-09-30 Toyo Tire & Rubber Co., Ltd. tire
DE102010012595B4 (en) 2009-03-26 2019-02-07 Toyo Tire & Rubber Co., Ltd. tire
JP2016130078A (en) * 2015-01-14 2016-07-21 住友ゴム工業株式会社 Pneumatic tire
JP2017087861A (en) * 2015-11-05 2017-05-25 東洋ゴム工業株式会社 Pneumatic tire
CN107031301A (en) * 2015-11-05 2017-08-11 东洋橡胶工业株式会社 Pneumatic tire
CN107053959A (en) * 2015-11-05 2017-08-18 东洋橡胶工业株式会社 Pneumatic tire
CN107053959B (en) * 2015-11-05 2018-12-18 东洋橡胶工业株式会社 Pneumatic tire
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US10449808B2 (en) 2015-11-05 2019-10-22 Toyo Tire Corporation Pneumatic tire

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