JPH04306106A - Pneumatic radial tire - Google Patents
Pneumatic radial tireInfo
- Publication number
- JPH04306106A JPH04306106A JP3069884A JP6988491A JPH04306106A JP H04306106 A JPH04306106 A JP H04306106A JP 3069884 A JP3069884 A JP 3069884A JP 6988491 A JP6988491 A JP 6988491A JP H04306106 A JPH04306106 A JP H04306106A
- Authority
- JP
- Japan
- Prior art keywords
- tread
- tire
- tread land
- pneumatic radial
- sipes
- 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
Links
- 230000000694 effects Effects 0.000 abstract description 12
- 239000011295 pitch Substances 0.000 abstract description 11
- 238000005452 bending Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C11/1218—Three-dimensional shape with regard to depth and extending direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、氷雪路における制動性
能の向上を目的として、トレッド陸部に細い切り込みを
形成した空気入りラジアルタイヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic radial tire having narrow cuts formed in the tread land area for the purpose of improving braking performance on icy and snowy roads.
【０００２】0002
【従来技術】従来、トレッド部のタイヤ踏面にタイヤ周
方向の主溝と、この主溝を横切る方向のラグ溝とによっ
て区画される多数のトレッド陸部からなるラグパターン
を備えた空気入りラジアルタイヤにおいては、その氷雪
路における制動、牽引性能（エッジ効果）を向上させる
ために、各トレッド陸部に、夫々複数の細い切り込み（
以下サイプという）が設けられている。例えば、特開平
２ー１７９５０９号公報に開示された空気入りタイヤに
おいては、図８に示される如く、各トレッド陸部６０に
タイヤ回転方向と交差する方向に２本以上のサイプ６２
、６４、・・・、６６を設け、これらのサイプの内、ト
レッド陸部６０の踏み込み側６０Ａ端部に最も近く位置
するサイプ６２の深さを最も浅くし、順次トレッド陸部
６０の蹴り上げ側６０Ｂに位置するサイプほど深くして
いる。これによって、各トレッド陸部６０内の剛性が、
蹴り上げ側６０Ｂより踏み込み側６０Ａが大きくなり、
制動時にトレッド陸部６０の踏み込み側６０Ａの路面か
らの浮き上がりが抑制される。また、トレッド陸部６０
の踏み込み側６０Ａと蹴り上げ側６０Ｂとの摩耗量の差
が小さくなり、偏磨耗を抑制することができると共にト
レッド陸部６０の接地面が減少しないからタイヤの制動
性が向上する。[Prior Art] Conventionally, a pneumatic radial tire has a lug pattern on the tire tread surface of the tread portion, which is composed of a large number of tread land portions partitioned by a main groove in the circumferential direction of the tire and lug grooves in a direction transverse to the main groove. In order to improve braking and traction performance (edge effect) on icy and snowy roads, each tread land section has multiple thin cuts (
(hereinafter referred to as sipe) is provided. For example, in the pneumatic tire disclosed in Japanese Unexamined Patent Publication No. 2-179509, as shown in FIG.
, 64, . The sipes located on the side 60B are deeper. As a result, the rigidity within each tread land portion 60 is
The stepping side 60A is larger than the kicking side 60B,
Lifting of the depression side 60A of the tread land portion 60 from the road surface during braking is suppressed. In addition, the tread land part 60
The difference in the amount of wear between the stepping-in side 60A and the kick-up side 60B is reduced, uneven wear can be suppressed, and the contact surface of the tread land portion 60 does not decrease, so the braking performance of the tire is improved.
【０００３】また、特開平２ー１６９３０７号公報に開
示された空気入りタイヤにおいては、図９に示される如
く、トレッド陸部７０の踏み込み側７０Ａ端部に最も近
いサイプ７２の踏み込み側７０Ａ端部からの距離Ｌ１を
、トレッド陸部７０のタイヤ周方向長さＬ２の３分の１
より大きく２分の１以下としている。これによって、各
トレッド陸部７０内の剛性が、蹴り上げ側７０Ｂより踏
み込み側７０Ａが著しく大きくなり、制動時に、踏み込
み側７０Ａが浮き上がることがなく偏磨耗が抑制できる
と共に、トレッド陸部７０の接地面が減少しないからタ
イヤの制動性が向上する。なお、関連する従来技術とし
ては特開平２ー１８２５０２号公報が有る。Furthermore, in the pneumatic tire disclosed in Japanese Patent Application Laid-Open No. 2-169307, as shown in FIG. The distance L1 from
It is set to be larger than 1/2. As a result, the rigidity within each tread land portion 70 is significantly greater on the stepping side 70A than on the kicking side 70B, so that the stepping side 70A does not lift up during braking, suppressing uneven wear, and the contact of the tread land portion 70. The braking performance of the tires is improved because the ground surface is not reduced. Note that Japanese Patent Application Laid-Open No. 2-182502 is a related prior art.
【０００４】しかしながら、これらの空気入りタイヤに
おいては、トレッド陸部の摩耗が進んだ場合に、相対的
にサイプの深さが減少し、サイプの深さによってもたら
される上記性能の維持が困難となるという不具合が発生
する。However, in these pneumatic tires, when the wear of the tread land area progresses, the sipe depth decreases relatively, making it difficult to maintain the above-mentioned performance brought about by the sipe depth. This problem occurs.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記事実を考
慮し、トレッド陸部の摩耗時にも充分なエッジ効果と適
当な剛性を有することができる空気入りラジアルタイヤ
を得ることが目的である。SUMMARY OF THE INVENTION In view of the above-mentioned facts, the present invention aims to provide a pneumatic radial tire that can have a sufficient edge effect and appropriate rigidity even when the tread land portion wears out.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に請求項１記載の本発明は、トレッド部のタイヤ踏面に
タイヤ周方向に沿って形成された主溝と、タイヤ幅方向
に沿って形成されたラグ溝と、前記主溝及び前記ラグ溝
によって区画されたトレッド陸部と、を備えた空気入り
ラジアルタイヤであって、前記トレッド陸部に前記ラグ
溝と略平行に複数本形成されその内の少なくとも一本が
深さ方向にジグザグとされた細い切り込みを、有するこ
とを特徴としている。Means for Solving the Problems In order to achieve the above object, the present invention as set forth in claim 1 provides a main groove formed along the tire circumferential direction in the tire tread surface of the tread portion, and a main groove formed along the tire width direction. A pneumatic radial tire comprising lug grooves formed therein, and a tread land section defined by the main groove and the lug groove, wherein a plurality of lug grooves are formed in the tread land section substantially parallel to the lug grooves. It is characterized in that at least one of them has a thin cut in a zigzag pattern in the depth direction.
【０００７】上記目的を達成するために請求項２記載の
本発明は、トレッド部のタイヤ踏面にタイヤ周方向に沿
って形成された主溝と、タイヤ幅方向に沿って形成され
たラグ溝と、前記主溝及び前記ラグ溝によって区画され
たトレッド陸部と、を備えた空気入りラジアルタイヤで
あって、前記トレッド陸部に前記ラグ溝と略平行に複数
本形成されその内の少なくとも一本が深さ方向に波状と
された細い切り込みを、有することを特徴としている。[0007] In order to achieve the above object, the present invention as set forth in claim 2 provides main grooves formed along the tire circumferential direction on the tire tread surface of the tread portion, and lug grooves formed along the tire width direction. , a pneumatic radial tire comprising: a tread land portion defined by the main groove and the lug groove; a plurality of tread land portions are formed substantially parallel to the lug grooves in the tread land portion, and at least one of the tread land portions is formed substantially parallel to the lug groove; It is characterized by having thin notches that are wavy in the depth direction.
【０００８】[0008]
【作用】請求項１記載の本発明の空気入りラジアルタイ
ヤでは、トレッド陸部にラグ溝と略平行に複数本形成さ
れその内の少なくとも一本が深さ方向にジグザグとされ
た細い切り込みが形成されている。従って、これらの細
い切り込みによって、トレッド陸部のエッジ効果を確保
することができると共に、これらの細い切り込みのジグ
ザグの山と谷との噛合によって、トレッド陸部の曲げ剛
性が維持され偏摩耗を抑制することができる。このため
、従来のような深さ方向に直線状とされた細い切り込み
と比べ、トレッド陸部の摩耗の影響を受け難く、トレッ
ド陸部の摩耗時にも充分なエッジ効果と適当な剛性を保
持することができる。[Operation] In the pneumatic radial tire of the present invention as set forth in claim 1, a plurality of thin cuts are formed in the tread land portion substantially parallel to the lug grooves, and at least one of the thin cuts is zigzag in the depth direction. has been done. Therefore, these thin cuts make it possible to ensure the edge effect of the tread land, and the engagement of these thin cuts with the zigzag peaks and valleys maintains the bending rigidity of the tread land and suppresses uneven wear. can do. Therefore, compared to conventional thin cuts that are linear in the depth direction, it is less susceptible to wear on the tread land, and maintains sufficient edge effect and appropriate rigidity even when the tread land wears out. be able to.
【０００９】また、請求項２記載の本発明の空気入りラ
ジアルタイヤでは、トレッド陸部にラグ溝と略平行に複
数本形成されその内の少なくとも一本が深さ方向に波状
とされた細い切り込みが形成されている。従って、この
場合にも、細い切り込みの波状の山と谷との噛合によっ
て、トレッド陸部の曲げ剛性が維持され偏摩耗を抑制す
ることができる。このため、従来のような深さ方向に直
線状とされた細い切り込みと比べ、トレッド陸部の摩耗
の影響を受け難く、トレッド陸部の摩耗時にも充分なエ
ッジ効果と適当な剛性を保持することができる。Further, in the pneumatic radial tire of the present invention as set forth in claim 2, a plurality of thin cuts are formed in the tread land portion substantially parallel to the lug grooves, and at least one of the thin cuts is wavy in the depth direction. is formed. Therefore, in this case as well, the bending rigidity of the tread land portion is maintained and uneven wear can be suppressed by the engagement of the wavy peaks and valleys of the thin cuts. Therefore, compared to conventional thin cuts that are linear in the depth direction, it is less susceptible to wear on the tread land, and maintains sufficient edge effect and appropriate rigidity even when the tread land wears out. be able to.
【００１０】0010
【実施例】本発明の第１実施例を図１及び図２に従って
説明する。Embodiment A first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
【００１１】図２に示される如く、本実施例の空気入り
ラジアルタイヤ１０のトレッド部１２のタイヤ踏面には
、タイヤ周方向に沿った主溝１４、１６、１８、２０が
略等間隔で４本形成されている。また、この空気入りラ
ジアルタイヤ１０のトレッド部１２のタイヤ踏面におい
ては、主溝１４、１６、１８、２０を横切るラグ溝２２
がタイヤ周方向に所定の間隔で形成されている。従って
、トレッド部１２のタイヤ踏面には、主溝１４、１６、
１８、２０とラグ溝２２とによって区画された複数のト
レッド陸部２４が形成されている。さらに、トレッド部
１２の各トレッド陸部２４には、ラグ溝２２と略平行に
、サイプ２６、２８、３０がタイヤ周方向に所定の間隔
で、等しい深さに形成されている。As shown in FIG. 2, the tire tread surface of the tread portion 12 of the pneumatic radial tire 10 of this embodiment has four main grooves 14, 16, 18, and 20 arranged at approximately equal intervals along the circumferential direction of the tire. The book is formed. Furthermore, in the tire tread surface of the tread portion 12 of this pneumatic radial tire 10, lug grooves 22 that cross the main grooves 14, 16, 18, and 20 are provided.
are formed at predetermined intervals in the tire circumferential direction. Therefore, the main grooves 14, 16,
A plurality of tread land portions 24 are formed which are partitioned by 18, 20 and lug grooves 22. Furthermore, sipes 26, 28, and 30 are formed in each tread land portion 24 of the tread portion 12, substantially parallel to the lug grooves 22, at predetermined intervals in the tire circumferential direction and having the same depth.
【００１２】図１に示される如く、トレッド陸部２４の
各サイプ２６、２８、３０は、夫々深さ方向にジグザグ
とされており、各サイプ２６、２８、３０を挟んで形成
されるトレッド陸部２４の山３２と谷３４とが噛合って
いる。また、各サイプ２６、２８、３０の内、トレッド
陸部２４の踏み込み側２４Ａ端部に最も近く位置するサ
イプ２６のジグザグのピッチＰ１が最も長くされており
、順次トレッド陸部２４の蹴り上げ側２４Ｂに位置する
サイプ２８、３０ほどジグザグのピッチＰ２、Ｐ３が短
くなっている。As shown in FIG. 1, the sipes 26, 28, 30 of the tread land portion 24 are zigzag in the depth direction, and the sipes 26, 28, 30 formed between the sipes 26, 28, 30 are The peaks 32 and valleys 34 of the portion 24 mesh with each other. Furthermore, among the sipes 26, 28, and 30, the zigzag pitch P1 of the sipe 26 located closest to the end of the stepping-in side 24A of the tread land portion 24 is made the longest, and the zigzag pitch P1 of the sipe 26 located closest to the end of the tread land portion 24 on the kick-up side The zigzag pitches P2 and P3 of the sipes 28 and 30 located at 24B are shorter.
【００１３】次に本実施例の作用に付いて説明する。Next, the operation of this embodiment will be explained.
【００１４】本実施例の空気入りラジアルタイヤ１０に
おいては、トレッド陸部２４にラグ溝２２と略平行に深
さ方向にジグザグとされたサイプ２６、２８、３０が形
成されている。従って、各サイプ２６、２８、３０によ
って、従来の深さ方向に直線状とされたサイプと同様に
、トレッド陸部２４のエッジ効果を確保することができ
ると共に、トレッド陸部２４のジグザグの山３２と谷３
４との噛合によって、トレッド陸部２４の曲げ剛性が維
持され偏摩耗を抑制することができる。In the pneumatic radial tire 10 of this embodiment, sipes 26, 28, and 30 are formed in the tread land portion 24 in a zigzag manner in the depth direction substantially parallel to the lug grooves 22. Therefore, each of the sipes 26, 28, and 30 can ensure the edge effect of the tread land portion 24, similar to the conventional sipe that is straight in the depth direction, and the zigzag peaks of the tread land portion 24 can be secured. 32 and valley 3
4, the bending rigidity of the tread land portion 24 is maintained and uneven wear can be suppressed.
【００１５】即ち、各サイプ２６、２８、３０のピッチ
Ｐ１、Ｐ２、Ｐ３を夫々小さくすると山３２と谷３４と
のずれが起こり易くなり、トレッド陸部２４が変形し易
くなると共に、各サイプ２６、２８、３０のピッチＰ１
、Ｐ２、Ｐ３を大きくすると山３２と谷３４とのずれが
起こり難くなり、トレッド陸部２４が変形し難くなる。
このため、各サイプ２６、２８、３０のピッチＰ１、Ｐ
２、Ｐ３は、トレッド陸部２４の踏み込み側２４Ａ端部
に最も近く位置するサイプ２６のピッチＰ１が最も長く
、順次トレッド陸部２４の蹴り上げ側２４Ｂに位置する
サイプ２８、３０のピッチＰ２、Ｐ３が短くなっている
。これによって、各トレッド陸部２４内の剛性が蹴り上
げ側２４Ｂより踏み込み側２４Ａが大きくなり、制動時
に各トレッド陸部２４の踏み込み側２４Ａの路面からの
浮き上がりが抑制され、各トレッド陸部２４の踏み込み
側２４Ａと蹴り上げ側２４Ｂとの摩耗量の差が小さくな
り偏磨耗が防止できると共に、各トレッド陸部２４の接
地面が減少しないからタイヤの制動性を向上することが
できる。また、従来のようにサイプの深さ又は位置によ
ってトレッド陸部の曲げ剛性を調節する場合と比べ、ト
レッド陸部２４の摩耗の影響を受け難く、トレッド陸部
２４の摩耗時にも充分なエッジ効果と適当な剛性を保持
することができる。That is, if the pitches P1, P2, and P3 of the sipes 26, 28, and 30 are made smaller, the crests 32 and the valleys 34 are more likely to be misaligned, the tread land portion 24 is more likely to deform, and the sipes 26 are more likely to be misaligned. , 28, 30 pitch P1
, P2, and P3, it becomes difficult for the peaks 32 and the valleys 34 to be misaligned, and the tread land portion 24 becomes difficult to deform. For this reason, the pitches P1, P of each sipe 26, 28, 30 are
2, P3 is the longest pitch P1 of the sipe 26 located closest to the end of the stepping-in side 24A of the tread land portion 24, and the pitch P2 of the sipes 28 and 30 sequentially located on the kick-up side 24B of the tread land portion 24; P3 is short. As a result, the rigidity within each tread land portion 24 is greater on the stepping side 24A than on the kicking side 24B, suppressing lifting of the stepping side 24A of each tread land portion 24 from the road surface during braking, and causing each tread land portion 24 to rise from the road surface. The difference in the amount of wear between the stepping-in side 24A and the kicking-up side 24B is reduced, preventing uneven wear, and since the contact surface of each tread land portion 24 is not reduced, the braking performance of the tire can be improved. In addition, compared to the conventional case where the bending rigidity of the tread land part is adjusted by the depth or position of the sipes, it is less affected by the wear of the tread land part 24, and even when the tread land part 24 wears, a sufficient edge effect can be achieved. and can maintain appropriate rigidity.
【００１６】次に本発明の第２実施例を図３に従って説
明する。Next, a second embodiment of the present invention will be described with reference to FIG.
【００１７】なお、第１実施例と同一部材については、
同一符号を付してその説明を省略する。[0017] Regarding the same members as in the first embodiment,
The same reference numerals are used to omit the explanation.
【００１８】図３に示される如く、トレッド陸部２４の
各サイプ３６、３８、４０は、夫々深さ方向にジグザグ
とされており、各サイプ３６、３８、４０を挟んで形成
されるトレッド陸部２４の山３２と谷３４とが噛合って
いる。また、各サイプ３６、３８、４０の内、トレッド
陸部２４の踏み込み側２４Ａ端部に最も近く位置するサ
イプ３６の深さＤ１が最も浅くされており、順次トレッ
ド陸部２４の蹴り上げ側２４Ｂに位置するサイプ３８、
４０ほど深さＤ２、Ｄ３が深くなっている。As shown in FIG. 3, the sipes 36, 38, 40 of the tread land portion 24 are zigzag in the depth direction, and the sipes 36, 38, 40 formed between the sipes 36, 38, 40 are The peaks 32 and valleys 34 of the portion 24 mesh with each other. Further, among the sipes 36, 38, and 40, the depth D1 of the sipe 36 located closest to the end of the stepping-in side 24A of the tread land portion 24 is the shallowest, and the depth D1 of the sipe 36 located closest to the end of the tread land portion 24 on the kicking side 24B Sipe 38, located in
Depths D2 and D3 are about 40 deep.
【００１９】次に本実施例の作用に付いて説明する。Next, the operation of this embodiment will be explained.
【００２０】本実施例の空気入りラジアルタイヤ１０に
おいては、トレッド陸部２４にラグ溝２２と略平行に深
さ方向にジグザグとされたサイプ３６、３８、４０が形
成されている。従って、各サイプ３６、３８、４０によ
って、従来の深さ方向に直線状とされたサイプと同様に
、トレッド陸部２４のエッジ効果を確保することができ
ると共に、トレッド陸部２４のジグザグの山３２と谷３
４との噛合によって、トレッド陸部２４の曲げ剛性が維
持され偏摩耗を抑制することができる。このため、従来
のような深さ方向に直線状とされた細い切り込みと比べ
、トレッド陸部の摩耗の影響を受け難く、トレッド陸部
の摩耗時にも充分なエッジ効果と適当な剛性を保持する
ことができる。In the pneumatic radial tire 10 of this embodiment, sipes 36, 38, and 40 are formed in the tread land portion 24 in a zigzag manner in the depth direction substantially parallel to the lug grooves 22. Therefore, each of the sipes 36, 38, and 40 can ensure the edge effect of the tread land portion 24, similar to the conventional sipe that is straight in the depth direction, and the zigzag peaks of the tread land portion 24 can be secured. 32 and valley 3
4, the bending rigidity of the tread land portion 24 is maintained and uneven wear can be suppressed. Therefore, compared to conventional thin cuts that are linear in the depth direction, it is less susceptible to wear on the tread land, and maintains sufficient edge effect and appropriate rigidity even when the tread land wears out. be able to.
【００２１】なお、上記第１実施例及び第２実施例では
、トレッド陸部２４の各サイプを全てジグザグとしたが
、これに代えて図４、図５及び図６に示される如く、深
さ方向にジグザグとしサイプ４２と、深さ方向に直線状
としサイプ４４とを組合せ、トレッド陸部２４の剛性を
向上させたい部位に深さ方向にジグザグとしサイプ４２
をもうけても良い。また、図７（Ａ）に示される如く、
深さ方向にジグザグとしサイプに代えて、深さ方向に波
状としたサイプ４６、４８、５０を設けても良く、図７
（Ｂ）に示される如く、深さ方向に向かって、ピッチ及
び振幅が徐々に小さくなるサイプ５２、５４、５６を設
けても良い。In the first and second embodiments, all the sipes of the tread land portion 24 are zigzag, but instead of this, as shown in FIGS. 4, 5, and 6, The sipes 42 are zigzag in the direction and the sipes 44 are straight in the depth direction, and the sipes 42 are zigzag in the depth direction at the part where the rigidity of the tread land portion 24 is desired to be improved.
It's okay to make a profit. Moreover, as shown in FIG. 7(A),
Instead of zigzag sipes in the depth direction, wavy sipes 46, 48, and 50 in the depth direction may be provided, as shown in FIG.
As shown in (B), sipes 52, 54, and 56 may be provided whose pitch and amplitude gradually decrease toward the depth direction.
【００２２】（実験例１）本発明の第１実施例の空気入
りラジアルタイヤ（タイヤサイズ１９５／７０Ｒ１４）
と、従来の空気入りラジアルタイヤとを夫々表１の仕様
で試作し、各タイヤを夫々、氷雪路において、速度４０
ｋｍ／ｈから制動をかけ、その際の制動距離を測定し、
その結果を従来の空気入りラジアルタイヤの制動距離を
１００として表１に指数表示した。(Experimental Example 1) Pneumatic radial tire of the first embodiment of the present invention (tire size 195/70R14)
and a conventional pneumatic radial tire with the specifications shown in Table 1. Each tire was tested at a speed of 40 on an icy road.
Apply braking from km/h, measure the braking distance,
The results are expressed as an index in Table 1, with the braking distance of a conventional pneumatic radial tire set as 100.
【００２３】（実験例２）本実施例の空気入りラジアル
タイヤ（タイヤサイズ１９５／７０Ｒ１４）と、従来の
空気入りラジアルタイヤとを夫々表１の仕様で試作し、
各タイヤを夫々、実車に装着し、制動、駆動の頻度の高
いコース及びスラロームコースを１０００ｋｍ走行した
後のトレッド陸部の踏み込み側と、蹴り上げ側との段差
量を測定し、結果を従来の空気入りラジアルタイヤの耐
摩耗性を１００として表１に指数表示した。(Experimental Example 2) The pneumatic radial tire of this example (tire size 195/70R14) and a conventional pneumatic radial tire were prototyped with the specifications shown in Table 1.
After each tire was mounted on an actual vehicle and driven for 1000 km on a course with high braking and driving frequency and a slalom course, the amount of difference in level between the tread land area on the stepping-in side and the kick-up side was measured, and the results were compared to conventional The wear resistance of the pneumatic radial tire is expressed as an index in Table 1, with the wear resistance being 100.
【００２４】[0024]
【表１】[Table 1]
【００２５】以上の結果から、本実施例の空気入りラジ
アルタイヤが従来の空気入りラジアルタイヤに比べ優れ
ていることが明確となった。From the above results, it is clear that the pneumatic radial tire of this example is superior to the conventional pneumatic radial tire.
【００２６】[0026]
【発明の効果】本発明は上記の構成としたので、トレッ
ド陸部の摩耗時にも充分なエッジ効果と適当な剛性を有
することができるという優れた効果を有する。As described above, the present invention has the excellent effect of providing sufficient edge effect and appropriate rigidity even when the tread land portion wears out.
【図１】本発明の第１実施例の空気入りラジアルタイヤ
のトレッド陸部を示す斜視図である。FIG. 1 is a perspective view showing a tread land portion of a pneumatic radial tire according to a first embodiment of the present invention.
【図２】本発明の第１実施例の空気入りラジアルタイヤ
のトレッドを示す斜視図である。FIG. 2 is a perspective view showing a tread of a pneumatic radial tire according to a first embodiment of the present invention.
【図３】本発明の第２実施例の空気入りラジアルタイヤ
のトレッドを示す平面図である。FIG. 3 is a plan view showing a tread of a pneumatic radial tire according to a second embodiment of the present invention.
【図４】本発明の他の実施例の空気入りラジアルタイヤ
のトレッド陸部を示す斜視図である。FIG. 4 is a perspective view showing a tread land portion of a pneumatic radial tire according to another embodiment of the present invention.
【図５】本発明の他の実施例の空気入りラジアルタイヤ
のトレッド陸部を示す斜視図である。FIG. 5 is a perspective view showing a tread land portion of a pneumatic radial tire according to another embodiment of the present invention.
【図６】本発明の他の実施例の空気入りラジアルタイヤ
のトレッド陸部を示す斜視図である。FIG. 6 is a perspective view showing a tread land portion of a pneumatic radial tire according to another embodiment of the present invention.
【図７】（Ａ）及び（Ｂ）は夫々本発明の他の実施例の
空気入りラジアルタイヤのトレッド陸部を示す斜視図で
ある。FIGS. 7A and 7B are perspective views showing tread land portions of pneumatic radial tires according to other embodiments of the present invention; FIGS.
【図８】従来例の空気入りラジアルタイヤのトレッド陸
部を示す側断面図である。FIG. 8 is a side sectional view showing a tread land portion of a conventional pneumatic radial tire.
【図９】他の従来例の空気入りラジアルタイヤのトレッ
ド陸部を示す側断面図である。FIG. 9 is a side sectional view showing a tread land portion of another conventional pneumatic radial tire.
１０ 空気入りラジアルタイヤ １２ トレッド部 １４ 主溝 １６ 主溝 １８ 主溝 ２０ 主溝 ２２ ラグ溝 ２４ トレッド陸部 ２６ サイプ ２８ サイプ ３０ サイプ ３２ 山 ３４ 谷 ３６ サイプ ３８ サイプ ４０ サイプ ４２ サイプ ４４ サイプ ４６ サイプ ４８ サイプ ５０ サイプ ５２ サイプ ５４ サイプ ５６ サイプ 10 Pneumatic radial tires 12 Tread part 14 Main groove 16 Main groove 18 Main groove 20 Main groove 22 Lug groove 24 Tread land section 26 Sipe 28 Sipe 30 Sipe 32 Mountain 34 Valley 36 Sipe 38 Sipe 40 Sipe 42 Sipe 44 Sipe 46 Sipe 48 Sipe 50 Sipe 52 Sipe 54 Sipe 56 Sipe
Claims (2)
向に沿って形成された主溝と、タイヤ幅方向に沿って形
成されたラグ溝と、前記主溝及び前記ラグ溝によって区
画されたトレッド陸部と、を備えた空気入りラジアルタ
イヤであって、前記トレッド陸部に前記ラグ溝と略平行
に複数本形成されその内の少なくとも一本が深さ方向に
ジグザグとされた細い切り込みを、有することを特徴と
する空気入りラジアルタイヤ。1. A main groove formed along the tire circumferential direction on the tire tread surface of the tread portion, a lug groove formed along the tire width direction, and a tread land area partitioned by the main groove and the lug groove. A pneumatic radial tire comprising: a plurality of thin cuts formed in the tread land portion substantially parallel to the lug grooves, at least one of which is zigzag in the depth direction; A pneumatic radial tire characterized by:
向に沿って形成された主溝と、タイヤ幅方向に沿って形
成されたラグ溝と、前記主溝及び前記ラグ溝によって区
画されたトレッド陸部と、を備えた空気入りラジアルタ
イヤであって、前記トレッド陸部に前記ラグ溝と略平行
に複数本形成されその内の少なくとも一本が深さ方向に
波状とされた細い切り込みを、有することを特徴とする
空気入りラジアルタイヤ。2. A main groove formed along the tire circumferential direction on the tire tread surface of the tread portion, a lug groove formed along the tire width direction, and a tread land area partitioned by the main groove and the lug groove. A pneumatic radial tire comprising: a plurality of thin cuts formed in the tread land portion substantially parallel to the lug grooves, at least one of which is wavy in the depth direction; A pneumatic radial tire characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03069884A JP3110783B2 (en) | 1991-04-02 | 1991-04-02 | Pneumatic radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03069884A JP3110783B2 (en) | 1991-04-02 | 1991-04-02 | Pneumatic radial tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04306106A true JPH04306106A (en) | 1992-10-28 |
| JP3110783B2 JP3110783B2 (en) | 2000-11-20 |
Family
ID=13415624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03069884A Expired - Fee Related JP3110783B2 (en) | 1991-04-02 | 1991-04-02 | Pneumatic radial tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3110783B2 (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04310407A (en) * | 1991-04-05 | 1992-11-02 | Yokohama Rubber Co Ltd:The | Studless tire |
| EP0820885A2 (en) * | 1996-07-24 | 1998-01-28 | Bridgestone Corporation | Pneumatic tire |
| EP0846578A2 (en) * | 1996-12-06 | 1998-06-10 | Continental Aktiengesellschaft | Vehicle tyre |
| US5783002A (en) * | 1994-07-05 | 1998-07-21 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Tire tread including incisions |
| EP0890457A1 (en) * | 1997-07-07 | 1999-01-13 | Bridgestone Corporation | Pneumatic tyre |
| JP2000177329A (en) * | 1998-12-14 | 2000-06-27 | Ohtsu Tire & Rubber Co Ltd :The | Tire tread |
| JP2006188184A (en) * | 2005-01-07 | 2006-07-20 | Bridgestone Corp | Pneumatic tire |
| US7172001B2 (en) * | 2002-12-24 | 2007-02-06 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with short fibers and sipes having zigzag part and producing method thereof |
| JP2007153275A (en) * | 2005-12-08 | 2007-06-21 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2008030665A (en) * | 2006-07-31 | 2008-02-14 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2009196442A (en) * | 2008-02-20 | 2009-09-03 | Bridgestone Corp | Pneumatic tire |
| WO2010007995A1 (en) * | 2008-07-16 | 2010-01-21 | 株式会社ブリヂストン | Pneumatic tire |
| JP2012076557A (en) * | 2010-09-30 | 2012-04-19 | Bridgestone Corp | Pneumatic tire |
| JP2012510922A (en) * | 2008-12-05 | 2012-05-17 | ソシエテ ド テクノロジー ミシュラン | Tread with block |
| JP2012245930A (en) * | 2011-05-30 | 2012-12-13 | Bridgestone Corp | Tire |
| US20140261936A1 (en) * | 2013-03-15 | 2014-09-18 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| US20170157989A1 (en) * | 2014-06-24 | 2017-06-08 | Compagnie Generale Des Etablissements Michelin | Incised tread for civil engineering tire |
| JP2017193240A (en) * | 2016-04-20 | 2017-10-26 | 株式会社ブリヂストン | tire |
| EP3156262B1 (en) * | 2014-06-13 | 2019-01-02 | Bridgestone Corporation | Pneumatic tire |
| WO2019116921A1 (en) * | 2017-12-12 | 2019-06-20 | 株式会社ブリヂストン | Pneumatic tire |
| CN111433050A (en) * | 2017-09-07 | 2020-07-17 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
| EP3600919A4 (en) * | 2017-03-27 | 2020-10-28 | Bridgestone Bandag, LLC | Variable oscillation three dimensional sipe |
| JP2021059254A (en) * | 2019-10-08 | 2021-04-15 | 住友ゴム工業株式会社 | tire |
| CN114728552A (en) * | 2019-11-19 | 2022-07-08 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4431178B2 (en) * | 2008-01-15 | 2010-03-10 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP5454510B2 (en) | 2010-07-23 | 2014-03-26 | 横浜ゴム株式会社 | Pneumatic tire |
-
1991
- 1991-04-02 JP JP03069884A patent/JP3110783B2/en not_active Expired - Fee Related
Cited By (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04310407A (en) * | 1991-04-05 | 1992-11-02 | Yokohama Rubber Co Ltd:The | Studless tire |
| US5783002A (en) * | 1994-07-05 | 1998-07-21 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Tire tread including incisions |
| US6116310A (en) * | 1996-07-24 | 2000-09-12 | Bridgestone Corporation | Pneumatic tire |
| EP0820885A2 (en) * | 1996-07-24 | 1998-01-28 | Bridgestone Corporation | Pneumatic tire |
| EP0820885A3 (en) * | 1996-07-24 | 1998-07-08 | Bridgestone Corporation | Pneumatic tire |
| EP0846578A2 (en) * | 1996-12-06 | 1998-06-10 | Continental Aktiengesellschaft | Vehicle tyre |
| EP0846578A3 (en) * | 1996-12-06 | 1999-11-17 | Continental Aktiengesellschaft | Vehicle tyre |
| EP0890457A1 (en) * | 1997-07-07 | 1999-01-13 | Bridgestone Corporation | Pneumatic tyre |
| JP2000177329A (en) * | 1998-12-14 | 2000-06-27 | Ohtsu Tire & Rubber Co Ltd :The | Tire tread |
| US7172001B2 (en) * | 2002-12-24 | 2007-02-06 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with short fibers and sipes having zigzag part and producing method thereof |
| JP2006188184A (en) * | 2005-01-07 | 2006-07-20 | Bridgestone Corp | Pneumatic tire |
| JP4589733B2 (en) * | 2005-01-07 | 2010-12-01 | 株式会社ブリヂストン | Pneumatic tire |
| JP2007153275A (en) * | 2005-12-08 | 2007-06-21 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2008030665A (en) * | 2006-07-31 | 2008-02-14 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2009196442A (en) * | 2008-02-20 | 2009-09-03 | Bridgestone Corp | Pneumatic tire |
| WO2010007995A1 (en) * | 2008-07-16 | 2010-01-21 | 株式会社ブリヂストン | Pneumatic tire |
| JP2012510922A (en) * | 2008-12-05 | 2012-05-17 | ソシエテ ド テクノロジー ミシュラン | Tread with block |
| JP2012076557A (en) * | 2010-09-30 | 2012-04-19 | Bridgestone Corp | Pneumatic tire |
| JP2012245930A (en) * | 2011-05-30 | 2012-12-13 | Bridgestone Corp | Tire |
| JP2014177237A (en) * | 2013-03-15 | 2014-09-25 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| US9434214B2 (en) * | 2013-03-15 | 2016-09-06 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with tread having three dimensional sipes |
| US20140261936A1 (en) * | 2013-03-15 | 2014-09-18 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| US10518589B2 (en) | 2014-06-13 | 2019-12-31 | Bridgestone Corporation | Pneumatic tire |
| EP3156262B1 (en) * | 2014-06-13 | 2019-01-02 | Bridgestone Corporation | Pneumatic tire |
| US20170157989A1 (en) * | 2014-06-24 | 2017-06-08 | Compagnie Generale Des Etablissements Michelin | Incised tread for civil engineering tire |
| US10780745B2 (en) * | 2014-06-24 | 2020-09-22 | Compagnie Generale Des Etablissements Michelin | Incised tread for civil engineering tire |
| JP2017193240A (en) * | 2016-04-20 | 2017-10-26 | 株式会社ブリヂストン | tire |
| EP3600919A4 (en) * | 2017-03-27 | 2020-10-28 | Bridgestone Bandag, LLC | Variable oscillation three dimensional sipe |
| JP2021169309A (en) * | 2017-03-27 | 2021-10-28 | ブリヂストン バンダグ エルエルシー | Variable oscillation three-dimensional sipe |
| CN111433050A (en) * | 2017-09-07 | 2020-07-17 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
| CN111433050B (en) * | 2017-09-07 | 2022-06-17 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
| JP2019104344A (en) * | 2017-12-12 | 2019-06-27 | 株式会社ブリヂストン | Pneumatic tire |
| WO2019116921A1 (en) * | 2017-12-12 | 2019-06-20 | 株式会社ブリヂストン | Pneumatic tire |
| JP2021059254A (en) * | 2019-10-08 | 2021-04-15 | 住友ゴム工業株式会社 | tire |
| CN114728552A (en) * | 2019-11-19 | 2022-07-08 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
| CN114728552B (en) * | 2019-11-19 | 2024-06-28 | 大陆轮胎德国有限公司 | Pneumatic tire for vehicle |
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|---|---|
| JP3110783B2 (en) | 2000-11-20 |
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