JP2002337509A - Pneumatic radial tire - Google Patents
Pneumatic radial tireInfo
- Publication number
- JP2002337509A JP2002337509A JP2001148649A JP2001148649A JP2002337509A JP 2002337509 A JP2002337509 A JP 2002337509A JP 2001148649 A JP2001148649 A JP 2001148649A JP 2001148649 A JP2001148649 A JP 2001148649A JP 2002337509 A JP2002337509 A JP 2002337509A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- reinforcing
- pneumatic radial
- tire
- radial tire
- 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
Landscapes
- Tires In General (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、空気入りラジアル
タイヤに関し、更に詳しくは、ベルト層の波打ち現象を
改善するように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, and more particularly to a pneumatic radial tire capable of improving a waving phenomenon of a belt layer.
【0002】[0002]
【従来の技術】トレッド面の溝は、未加硫のタイヤを金
型内で加硫成型中に、金型内面の溝成形用突起がトレッ
ド面内に食い込み、トレッド部のゴムを押し退けること
により形成される。中でも、他の溝よりも溝幅が広く、
溝深さが深く形成される周方向溝の場合は、溝成形用突
起の食い込み量が大きい。そのため、トレッド部に埋設
されたベルト層の周方向溝内周側部分が溝成形用突起に
より部分的に内周側に押し下げられ、ベルト層に波打ち
現象を生じる。2. Description of the Related Art Grooves on a tread surface are formed by vulcanizing an unvulcanized tire in a mold while a groove forming projection on the inner surface of the mold bites into the tread surface and pushes away the rubber on the tread portion. It is formed. Among them, the groove width is wider than other grooves,
In the case of a circumferential groove having a deep groove depth, the groove forming projection has a large bite amount. For this reason, the inner circumferential side portion of the circumferential groove of the belt layer embedded in the tread portion is partially pushed down to the inner circumferential side by the groove forming protrusion, and a waving phenomenon occurs in the belt layer.
【0003】このようなベルト層の波打ちは、タイヤの
高速耐久性や耐偏摩耗性に悪影響を及ぼす。左右旋回時
に大きな力がトレッド部の両ショルダー部に加わるた
め、外側に位置する周方向溝程その周辺での偏摩耗が大
きくなり、かつ最外側の周方向溝内周側のベルト層の部
分から破壊が発生し易くなる。[0003] Such waving of the belt layer adversely affects the high-speed durability and uneven wear resistance of the tire. Since a large force is applied to both shoulder portions of the tread portion when turning left and right, uneven wear around the circumferential groove located on the outer side increases, and from the belt layer portion on the inner circumferential side of the outermost circumferential groove. Destruction is likely to occur.
【0004】[0004]
【発明が解決しようとする課題】本発明の目的は、ベル
ト層の波打ち量を低減し、高速耐久性及び耐偏摩耗性を
改善することが可能な空気入りラジアルタイヤを提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a pneumatic radial tire capable of reducing the amount of waving of a belt layer and improving high-speed durability and uneven wear resistance.
【0005】[0005]
【課題を解決するための手段】上記目的を達成する本発
明は、トレッド部のカーカス層外周側に複数のベルト層
を埋設し、トレッド面に複数の周方向溝を設けた空気入
りラジアルタイヤにおいて、少なくともタイヤ幅方向最
外側に位置する周方向溝の内周側でかつ最外周ベルト層
より内周側に補強層を配置したことを特徴とする。According to the present invention, there is provided a pneumatic radial tire in which a plurality of belt layers are buried on a carcass layer outer peripheral side of a tread portion and a plurality of circumferential grooves are provided on a tread surface. The reinforcing layer is arranged at least on the inner peripheral side of the circumferential groove located on the outermost side in the tire width direction and on the inner peripheral side of the outermost peripheral belt layer.
【0006】少なくともタイヤ幅方向最外側に位置する
周方向溝に対応して、上記のように補強層を最外周ベル
ト層より内周側に配置して周方向溝内周側の剛性を高め
るため、加硫時に金型の周方向溝成形用突起がトレッド
面内に大きく食い込んでも、ベルト層が大きく押し下げ
られることがない。このような効果は補強層を最外周ベ
ルト層よりも内側に配置するとき効果があり、最外周ベ
ルト層の外側に配置したのでは十分な効果は得られな
い。従って、ベルト層の波打ちを抑制することが可能と
なり、高速耐久性及び耐偏摩耗性を改善することができ
る。In order to increase the rigidity on the inner peripheral side of the circumferential groove by disposing the reinforcing layer on the inner peripheral side of the outermost peripheral belt layer as described above at least corresponding to the outermost peripheral groove located in the tire width direction. In addition, even if the circumferential groove forming projections of the mold bite into the tread surface at the time of vulcanization, the belt layer is not largely pushed down. Such an effect is effective when the reinforcing layer is disposed inside the outermost peripheral belt layer, and a sufficient effect cannot be obtained when the reinforcing layer is disposed outside the outermost peripheral belt layer. Therefore, it is possible to suppress the waving of the belt layer, and it is possible to improve high-speed durability and uneven wear resistance.
【0007】[0007]
【発明の実施の形態】以下、本発明の構成について添付
の図面を参照しながら詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.
【0008】図1は本発明の空気入りラジアルタイヤの
要部を示し、1はトレッド部、2はカーカス層、3はベ
ルト層である。不図示の左右のビード部間にカーカス層
2が装架され、その両端部がビードコアの周りにタイヤ
内側から外側に折り返されている。トレッド部1のカー
カス層2の外周側に、複数(図では2層)のベルト層3
が埋設されている。トレッド面1Aには、タイヤ周方向
にストレート状又はジグザグ状に延びる複数の周方向溝
4が設けられている。FIG. 1 shows a main part of a pneumatic radial tire according to the present invention, wherein 1 is a tread portion, 2 is a carcass layer, and 3 is a belt layer. A carcass layer 2 is mounted between left and right bead portions (not shown), and both ends of the carcass layer 2 are folded around the bead core from the inside of the tire to the outside. On the outer peripheral side of the carcass layer 2 of the tread portion 1, a plurality of (two layers in the figure) belt layers 3
Is buried. A plurality of circumferential grooves 4 extending straight or zigzag in the tire circumferential direction are provided on the tread surface 1A.
【0009】各周方向溝4の内周側には、内周側の1番
ベルト層(最内周ベルト層)3Aと外周側の2番ベルト
層(最外周ベルト層)3Bとの間に、ゴム被覆した補強
コードxをタイヤ周方向に螺旋状に連続して巻回した補
強層5が設けられている。On the inner peripheral side of each circumferential groove 4, between the innermost first belt layer (the innermost peripheral belt layer) 3A and the outer peripheral side second belt layer (the outermost peripheral belt layer) 3B. And a reinforcing layer 5 in which a rubber-coated reinforcing cord x is continuously spirally wound in the tire circumferential direction.
【0010】補強層5の補強コードxとしては、ナイロ
ンコードやアラミドコードなどの有機繊維コードや、ス
チールコードなどの金属コードが使用可能である。As the reinforcing cord x of the reinforcing layer 5, an organic fiber cord such as a nylon cord or an aramid cord, or a metal cord such as a steel cord can be used.
【0011】このように補強層5を最外周の2番ベルト
層3Bより内周側にして他の層と挟み込むように配置し
て、周方向溝4の内周側を補強することにより、加硫成
型中に金型内面の周方向溝成形用突起がトレッド面1A
内に大きく食い込んだ際のベルト層3の押し下げを効果
的に抑制し、ベルト層3の波打ち量を大きく低減するこ
とができる。従って、高速耐久性及び耐偏摩耗性の改善
が可能になる。In this manner, the reinforcing layer 5 is disposed on the inner peripheral side of the outermost second belt layer 3B so as to be sandwiched between the other layers, and the inner peripheral side of the circumferential groove 4 is reinforced. During the vulcanization molding, the circumferential groove forming projections on the inner surface of the mold are tread surface 1A
Pressing down of the belt layer 3 when the belt layer 3 is greatly penetrated inside can be effectively suppressed, and the waving amount of the belt layer 3 can be greatly reduced. Therefore, high-speed durability and uneven wear resistance can be improved.
【0012】図2は、本発明の空気入りタイヤの他の例
を示し、上述した実施形態においてベルト層3A,3B
間に配置した補強層5を、最内周の1番ベルト層3Aと
カーカス層2との間に設けたものである。このようにベ
ルト層3とカーカス層2との間に補強層5を挟持させる
ことにより、上述した効果を一層高めることがきる。FIG. 2 shows another example of the pneumatic tire of the present invention. In the embodiment described above, the belt layers 3A and 3B are used.
The reinforcing layer 5 disposed therebetween is provided between the innermost first belt layer 3A and the carcass layer 2. By sandwiching the reinforcing layer 5 between the belt layer 3 and the carcass layer 2 in this manner, the above-described effects can be further enhanced.
【0013】図3は、本発明の空気入りタイヤの更に他
の例を示し、上述した図2の実施形態において、最外周
の2番ベルト層3Bの外周側に更にゴム被覆した補強コ
ードyをタイヤ周方向に連続して螺旋状に巻回したベル
ト補強層6を配置したものである。このようにベルト補
強層6を配置することにより、ベルト層3の波打ち抑制
効果を一層高めることができる。FIG. 3 shows still another example of the pneumatic tire of the present invention. In the embodiment of FIG. 2, a reinforcing cord y further covered with rubber on the outer peripheral side of the outermost second belt layer 3B is provided. The belt reinforcing layer 6 wound spirally continuously in the tire circumferential direction is arranged. By arranging the belt reinforcing layer 6 in this manner, the effect of suppressing the waving of the belt layer 3 can be further enhanced.
【0014】図4は、本発明の空気入りタイヤの更に他
の例を示し、上述した図2の実施形態において、複数の
補強層5を同じ補強コードxで形成するようにしたもの
である。補強コードxを周方向溝4間に補強層5の巻き
付け密度よりも疎の状態にして巻回し、隣接する補強層
5を同じ補強コードxにより連続的に形成している。こ
のように同じ補強コードxを用いて連続的に形成するこ
とにより、上述した効果に加えて、複数の補強層5を形
成する際の生産性を向上することできる。FIG. 4 shows still another example of the pneumatic tire of the present invention. In the embodiment shown in FIG. 2, a plurality of reinforcing layers 5 are formed by the same reinforcing cord x. The reinforcing cords x are wound between the circumferential grooves 4 in a state of lower density than the winding density of the reinforcing layers 5, and the adjacent reinforcing layers 5 are continuously formed by the same reinforcing cords x. By continuously forming the reinforcing cords x using the same reinforcing cords x in this manner, in addition to the above-described effects, productivity in forming the plurality of reinforcing layers 5 can be improved.
【0015】本発明において、補強層5の補強コードx
に有機繊維コードを使用した場合、タイヤ周方向に対す
る巻き付け角度を15度以下かつ0度超にするのが好ま
しい。また、補強層5の補強コードxを金属コードで構
成した場合、タイヤ周方向に対する巻き付け角度を15
度以下5度超にするのがよい。巻き付け角度が上記角度
を越えると、補強コードxの巻き付け密度が疎になり過
ぎてベルト層3の波打ち抑制効果が不十分になるため、
高速耐久性及び耐偏摩耗性を効果的に改善することがで
きない。In the present invention, the reinforcing cord x of the reinforcing layer 5
When an organic fiber cord is used, the winding angle with respect to the tire circumferential direction is preferably 15 degrees or less and more than 0 degrees. When the reinforcing cord x of the reinforcing layer 5 is made of a metal cord, the winding angle with respect to the tire circumferential direction is set at 15 degrees.
It is better to be less than 5 degrees and more than 5 degrees. If the winding angle exceeds the above-mentioned angle, the winding density of the reinforcing cord x becomes too low and the effect of suppressing the waving of the belt layer 3 becomes insufficient.
High-speed durability and uneven wear resistance cannot be effectively improved.
【0016】補強層5の幅Aとしては、周方向溝4の溝
幅Bの1.2倍から4.0倍にするのが好ましい。補強
層5の幅Aが溝幅Bの1.2倍より小さいと、ベルト層
3の波打ち抑制効果が不十分なため、高速耐久性及び耐
偏摩耗性を効果的に改善することが難しくなる。逆に
4.0倍より大きくしても、改善効果が変わらない。The width A of the reinforcing layer 5 is preferably set to be 1.2 times to 4.0 times the groove width B of the circumferential groove 4. When the width A of the reinforcing layer 5 is smaller than 1.2 times the groove width B, the effect of suppressing the waving of the belt layer 3 is insufficient, so that it is difficult to effectively improve high-speed durability and uneven wear resistance. . Conversely, even if it is larger than 4.0 times, the improvement effect does not change.
【0017】なお、本発明において周方向溝の溝幅Bと
はトレッド面でのトレッド幅方向の開口幅をいい、周方
向溝4がジグザグ状に形成されている場合は、その振れ
幅を溝幅Bとする。In the present invention, the groove width B of the circumferential groove refers to the opening width in the tread width direction on the tread surface, and when the circumferential groove 4 is formed in a zigzag shape, the swing width is defined as the groove width. Width B.
【0018】本発明は、特に、ベルト層3の波打ちに大
きく影響する溝幅Bが6mm以上、溝深さが8mm以上の周
方向溝4を備えた空気入りラジアルタイヤに好適に用い
ることができる。The present invention can be suitably used particularly for a pneumatic radial tire provided with a circumferential groove 4 having a groove width B and a groove depth of 8 mm or more, which greatly affect the waving of the belt layer 3. .
【0019】また、補強層5は、上述したようにトレッ
ド面に設けた周方向溝4の全てに対して、その内周側に
配置することが好ましいが、ベルト層3の波打ちにより
高速耐久性及び耐偏摩耗性に最も影響するタイヤ幅方向
最外側の周方向溝の内周側にのみ設けることも可能であ
る。すなわち、少なくともタイヤ幅方向の最外側に位置
する周方向溝の内周側に補強層5を配置すればよい。更
に、補強層5は、上述した補強コードxに代えて、ゴム
シートあるいは補強コードを埋設したゴムシートから構
成してもよい。The reinforcing layer 5 is preferably disposed on the inner peripheral side of all the circumferential grooves 4 provided on the tread surface as described above. It is also possible to provide only the inner circumferential side of the outermost circumferential groove in the tire width direction which most affects the uneven wear resistance. That is, the reinforcing layer 5 may be arranged at least on the inner circumferential side of the circumferential groove located on the outermost side in the tire width direction. Further, the reinforcing layer 5 may be made of a rubber sheet or a rubber sheet in which the reinforcing cord is embedded, instead of the above-described reinforcing cord x.
【0020】[0020]
【実施例】実施例1、2、比較例1、従来例 タイヤサイズを195/65R15 91Hで共通に
し、1番ベルト層と2番ベルト層との間に補強層を配置
した図1に示す構成の本発明タイヤ1、1番ベルト層と
カーカス層との間に補強層を配置した図2に示す構成の
本発明タイヤ2、本発明タイヤ1における補強層を2番
ベルト層の外周側に移し替えた比較タイヤ1、及び本発
明タイヤにおける補強層を何処にも配置しなかった従来
タイヤをそれぞれ作製した。EXAMPLES Examples 1 and 2, Comparative Example 1, Conventional Example The structure shown in FIG. 1 in which the tire size is common to 195 / 65R1591H and a reinforcing layer is disposed between the first belt layer and the second belt layer. Tire 1 of the present invention, Tire 2 of the present invention having a structure shown in FIG. 2 in which a reinforcing layer is disposed between the first belt layer and the carcass layer, and the reinforcing layer in Tire 1 of the present invention was moved to the outer peripheral side of the second belt layer. The comparative tire 1 which was changed and the conventional tire which did not arrange the reinforcing layer in the tire of the present invention anywhere were produced.
【0021】本発明タイヤ1,2及び比較タイヤ1の各
補強層は、ゴム被覆したナイロンコードをタイヤ周方向
に螺旋状に連続的に巻回して構成され、補強層の幅は周
方向溝の溝幅の3倍、タイヤ周方向に対する巻き付け角
度は0度である。Each of the reinforcing layers of the tires 1 and 2 of the present invention and the comparative tire 1 is constituted by continuously winding a rubber-coated nylon cord spirally in the circumferential direction of the tire, and the width of the reinforcing layer is the width of the circumferential groove. Three times the groove width, and the winding angle with respect to the tire circumferential direction is 0 degree.
【0022】これら4種類のタイヤをリムサイズ15×
6JJのリムに装着し、以下に示す測定条件により、高
速耐久性及び耐偏摩耗性の評価試験を行ったところ、表
1に示す結果を得た。また、ベルト層の波打ち量(凹み
量)を測定した結果も、表1に示す。These four types of tires are rim size 15 ×
A 6 JJ rim was mounted on the rim, and a high-speed durability and uneven wear resistance evaluation test was performed under the following measurement conditions. The results shown in Table 1 were obtained. Table 1 also shows the results of measuring the waving amount (dent amount) of the belt layer.
【0023】高速耐久性 各試験タイヤを2001年JATMAイヤーブックに準
拠して、ドラム径1707mmでJIS D−423
0、JIS高速耐久性試験終了後、30分毎に10km
/hrずつ加速してタイヤが破壊するまで試験を続行し
た。High-speed durability According to the 2001 JATMA Yearbook, each of the test tires had a drum diameter of 1707 mm and JIS D-423.
0, 10km every 30 minutes after JIS high-speed durability test
The test was continued at a rate of / hr until the tire was broken.
【0024】その結果を従来タイヤを100とする指数
値で評価した。この値が大きい程、高速耐久性が優れて
いる。The results were evaluated using an index value with the conventional tire being 100. The higher the value, the better the high-speed durability.
【0025】耐偏摩耗性 各試験タイヤを実車に装着し、10000km走行後に
周方向溝の段差を測定し、その結果を従来タイヤを10
0とする指数値で評価した。この値が大きい程、耐偏摩
耗性が優れている。Uneven wear resistance Each test tire was mounted on an actual vehicle, and after traveling 10,000 km, the step in the circumferential groove was measured.
The evaluation was made with an index value of 0. The larger this value, the better the uneven wear resistance.
【0026】[0026]
【表1】 [Table 1]
【0027】表1から、本発明タイヤ1,2は、ベルト
層の波打ち量が小さく、高速耐久性及び耐偏摩耗性を改
善できることが判る。From Table 1, it can be seen that the tires 1 and 2 of the present invention have a small waving amount of the belt layer and can improve high-speed durability and uneven wear resistance.
【0028】実施例3〜5 タイヤサイズを実施例1と同じにし、1番ベルト層と2
番ベルト層との間に補強層を配置した図1に示す構成の
タイヤにおいて、補強層の幅Aを表2のように変えた本
発明タイヤ3〜5をそれぞれ作製した。Examples 3 to 5 The tire size was the same as in Example 1 and the first belt layer
In the tire having the configuration shown in FIG. 1 in which the reinforcing layer was disposed between the second belt layer and each of the tires 3 to 5 of the present invention in which the width A of the reinforcing layer was changed as shown in Table 2.
【0029】各補強層の構成は、補強層の幅Aを除いて
実施例1と同様である。また、周方向溝の溝幅は、いず
れも8mmである。The structure of each reinforcing layer is the same as that of the first embodiment except for the width A of the reinforcing layer. The groove width of each circumferential groove is 8 mm.
【0030】これら各試験タイヤのベルト層の波打ち量
を測定したところ、表2に示す結果を得た。When the waving amount of the belt layer of each of the test tires was measured, the results shown in Table 2 were obtained.
【0031】[0031]
【表2】 [Table 2]
【0032】表2から、補強層の幅を周方向溝の溝幅に
対して、同幅以上とすることにより、波打ち量を0.6
mmにすることができることがわかる。From Table 2, it can be seen that by making the width of the reinforcing layer equal to or greater than the width of the circumferential groove, the waving amount is reduced to 0.6.
mm.
【0033】実施例6〜9 タイヤサイズを実施例1と同じにし、1番ベルト層と2
番ベルト層との間に補強層を配置した図1に示す構成の
タイヤにおいて、補強層をゴム被覆したナイロンコード
から構成し、該コードのタイヤ周方向に対する巻き付け
角度を表3のように変えた本発明タイヤ6〜9をそれぞ
れ作製した。各補強層の幅は、周方向溝の溝幅の3倍で
ある。Examples 6 to 9 The tire size was the same as in Example 1, and the first belt layer
In the tire having the configuration shown in FIG. 1 in which a reinforcing layer is disposed between the tire and the #belt layer, the reinforcing layer was formed from a rubber-coated nylon cord, and the winding angle of the cord with respect to the tire circumferential direction was changed as shown in Table 3. Inventive tires 6 to 9 were produced, respectively. The width of each reinforcing layer is three times the groove width of the circumferential groove.
【0034】これら各試験タイヤのベルト層の波打ち量
を測定したところ、表3に示す結果を得た。When the waving amount of the belt layer of each of the test tires was measured, the results shown in Table 3 were obtained.
【0035】[0035]
【表3】 [Table 3]
【0036】表3から、有機繊維コードからなる補強層
のタイヤ周方向に対する巻き付け角度を小さくするほど
ベルト層の波打ち量を低減し、特に15度以下にするこ
とにより、ベルト層の波打ち量を大きく低減できること
がわかる。From Table 3, it can be seen that the smaller the winding angle of the reinforcing layer made of the organic fiber cord with respect to the circumferential direction of the tire is, the smaller the waving amount of the belt layer is. It can be seen that it can be reduced.
【0037】[0037]
【発明の効果】上述したように本発明は、トレッド部の
カーカス層外周側に複数のベルト層を埋設し、トレッド
面に複数の周方向溝を設けた空気入りラジアルタイヤに
おいて、少なくとも最外側に位置する周方向溝の内周側
でかつ最外周ベルト層より内周側に補強層を配置したの
で、ベルト層の波打ち量を低減し、高速耐久性及び耐偏
摩耗性を改善することができる。As described above, the present invention relates to a pneumatic radial tire in which a plurality of belt layers are buried on the outer peripheral side of a carcass layer of a tread portion and a plurality of circumferential grooves are provided on a tread surface. Since the reinforcing layer is arranged on the inner circumferential side of the circumferential groove located and on the inner circumferential side from the outermost belt layer, the amount of waving of the belt layer can be reduced, and high-speed durability and uneven wear resistance can be improved. .
【図1】本発明の空気入りラジアルタイヤの要部を示す
タイヤ子午線断面図である。FIG. 1 is a tire meridian sectional view showing a main part of a pneumatic radial tire of the present invention.
【図2】本発明の空気入りラジアルタイヤの他の例の要
部を示すタイヤ子午線断面図である。FIG. 2 is a tire meridian sectional view showing a main part of another example of the pneumatic radial tire of the present invention.
【図3】本発明の空気入りラジアルタイヤの更に他の例
の要部を示すタイヤ子午線断面図である。FIG. 3 is a tire meridian sectional view showing a main part of still another example of the pneumatic radial tire of the present invention.
【図4】本発明の空気入りラジアルタイヤの更に他の例
の要部を示すタイヤ子午線断面図である。FIG. 4 is a tire meridian sectional view showing a main part of still another example of the pneumatic radial tire of the present invention.
1 トレッド部 1A トレッド面 2 カーカス層 3 ベルト層 3A 1番ベルト層 3B 2番ベルト層
(最外周側ベルト層) 4 周方向溝 5 補強層 6 ベルト補強層 A 補強層の幅 B 溝幅 x 補強コードReference Signs List 1 tread portion 1A tread surface 2 carcass layer 3 belt layer 3A first belt layer 3B second belt layer (outermost belt layer) 4 circumferential groove 5 reinforcing layer 6 belt reinforcing layer A width of reinforcing layer B groove width x reinforcing code
Claims (7)
ベルト層を埋設し、トレッド面に複数の周方向溝を設け
た空気入りラジアルタイヤにおいて、 少なくともタイヤ幅方向最外側に位置する周方向溝の内
周側でかつ最外周ベルト層より内周側に補強層を配置し
た空気入りラジアルタイヤ。1. A pneumatic radial tire in which a plurality of belt layers are buried on a carcass layer outer peripheral side of a tread portion and a plurality of circumferential grooves are provided on a tread surface, at least a circumferential groove located at an outermost side in a tire width direction. A pneumatic radial tire in which a reinforcing layer is disposed on the inner peripheral side of the inner peripheral side of the outermost belt layer.
カス層との間に配置した請求項1に記載の空気入りラジ
アルタイヤ。2. The pneumatic radial tire according to claim 1, wherein the reinforcing layer is disposed between an innermost peripheral belt layer and the carcass layer.
1.2倍から4.0倍にした請求項1または2に記載の
空気入りラジアルタイヤ。3. The pneumatic radial tire according to claim 1, wherein the width of the reinforcing layer is 1.2 to 4.0 times the groove width of the circumferential groove.
機繊維コードを有し、該有機繊維コードのタイヤ周方向
に対する巻き付け角度を15度以下にした請求項1,2
または3に記載の空気入りラジアルタイヤ。4. The reinforcing layer has an organic fiber cord wound in a tire circumferential direction, and a winding angle of the organic fiber cord with respect to the tire circumferential direction is set to 15 degrees or less.
Or the pneumatic radial tire according to 3.
が8mm以上である請求項1,2,3または4に記載の空
気入りラジアルタイヤ。5. The pneumatic radial tire according to claim 1, wherein the circumferential groove has a groove width of 6 mm or more and a groove depth of 8 mm or more.
強層を配置した請求項1,2,3,4または5に記載の
空気入りラジアルタイヤ。6. The pneumatic radial tire according to claim 1, wherein a belt reinforcing layer is arranged on an outer peripheral side of the outermost peripheral belt layer.
配置すると共にタイヤ周方向に螺旋状に巻回した補強コ
ードから構成し、該補強コードを前記周方向溝間に前記
補強層の巻き付け密度よりも疎の状態にして巻回し、隣
接する補強層を同じ補強コードにより連続的に形成した
請求項1,2,5または6に記載の空気入りラジアルタ
イヤ。7. The reinforcing layer is arranged on the inner peripheral side of a plurality of circumferential grooves and is formed of a reinforcing cord spirally wound in a tire circumferential direction, and the reinforcing cord is provided between the circumferential grooves. The pneumatic radial tire according to claim 1, 2, 5, or 6, wherein the layers are wound with a density lower than the winding density of the layers, and adjacent reinforcing layers are continuously formed by the same reinforcing cord.
Priority Applications (1)
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JP2001148649A JP4513232B2 (en) | 2001-05-18 | 2001-05-18 | Pneumatic radial tire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001148649A JP4513232B2 (en) | 2001-05-18 | 2001-05-18 | Pneumatic radial tire |
Publications (2)
Publication Number | Publication Date |
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JP2002337509A true JP2002337509A (en) | 2002-11-27 |
JP4513232B2 JP4513232B2 (en) | 2010-07-28 |
Family
ID=18993920
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JP2001148649A Expired - Fee Related JP4513232B2 (en) | 2001-05-18 | 2001-05-18 | Pneumatic radial tire |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006182200A (en) * | 2004-12-27 | 2006-07-13 | Bridgestone Corp | Pneumatic tire |
JP2006321323A (en) * | 2005-05-18 | 2006-11-30 | Bridgestone Corp | Pneumatic tire |
JP2008006892A (en) * | 2006-06-28 | 2008-01-17 | Sumitomo Rubber Ind Ltd | Pneumatic tire for heavy load |
JP2008006963A (en) * | 2006-06-29 | 2008-01-17 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
JP2010042752A (en) * | 2008-08-12 | 2010-02-25 | Bridgestone Corp | Radial tire for aircraft |
JP2010137819A (en) * | 2008-12-15 | 2010-06-24 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2012040892A (en) * | 2010-08-12 | 2012-03-01 | Bridgestone Corp | Pneumatic tire |
JP2012116406A (en) * | 2010-12-02 | 2012-06-21 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
CN102555675A (en) * | 2010-12-28 | 2012-07-11 | 横滨橡胶株式会社 | Pneumatic tire and method of manufacturing pneumatic tire |
JP2012148763A (en) * | 2010-12-28 | 2012-08-09 | Yokohama Rubber Co Ltd:The | Pneumatic tire and method for manufacturing the same |
JP2013256221A (en) * | 2012-06-13 | 2013-12-26 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2014151754A (en) * | 2013-02-07 | 2014-08-25 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
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JPH05238205A (en) * | 1992-02-26 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
JPH05238206A (en) * | 1992-02-28 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
JP2001146103A (en) * | 1999-11-19 | 2001-05-29 | Bridgestone Corp | Pneumatic tire |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05238205A (en) * | 1992-02-26 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
JPH05238206A (en) * | 1992-02-28 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
JP2001146103A (en) * | 1999-11-19 | 2001-05-29 | Bridgestone Corp | Pneumatic tire |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006182200A (en) * | 2004-12-27 | 2006-07-13 | Bridgestone Corp | Pneumatic tire |
JP4721770B2 (en) * | 2005-05-18 | 2011-07-13 | 株式会社ブリヂストン | Pneumatic tire |
JP2006321323A (en) * | 2005-05-18 | 2006-11-30 | Bridgestone Corp | Pneumatic tire |
JP2008006892A (en) * | 2006-06-28 | 2008-01-17 | Sumitomo Rubber Ind Ltd | Pneumatic tire for heavy load |
JP2008006963A (en) * | 2006-06-29 | 2008-01-17 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
JP2010042752A (en) * | 2008-08-12 | 2010-02-25 | Bridgestone Corp | Radial tire for aircraft |
JP2010137819A (en) * | 2008-12-15 | 2010-06-24 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2012040892A (en) * | 2010-08-12 | 2012-03-01 | Bridgestone Corp | Pneumatic tire |
JP2012116406A (en) * | 2010-12-02 | 2012-06-21 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
CN102555675A (en) * | 2010-12-28 | 2012-07-11 | 横滨橡胶株式会社 | Pneumatic tire and method of manufacturing pneumatic tire |
JP2012148763A (en) * | 2010-12-28 | 2012-08-09 | Yokohama Rubber Co Ltd:The | Pneumatic tire and method for manufacturing the same |
US9156314B2 (en) | 2010-12-28 | 2015-10-13 | The Yokohama Rubber Co., Ltd. | Pneumatic tire and method of manufacturing pneumatic tire |
JP2013256221A (en) * | 2012-06-13 | 2013-12-26 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2014151754A (en) * | 2013-02-07 | 2014-08-25 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
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