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)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|
| JP2002337509A true JP2002337509A (en) | 2002-11-27 |
| JP4513232B2 JP4513232B2 (en) | 2010-07-28 |
Family
ID=18993920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001148649A Expired - Fee Related JP4513232B2 (en) | 2001-05-18 | 2001-05-18 | Pneumatic radial tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4513232B2 (en) |
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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05238206A (en) * | 1992-02-28 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
| JPH05238205A (en) * | 1992-02-26 | 1993-09-17 | Bridgestone Corp | Pneumatic tire |
| JP2001146103A (en) * | 1999-11-19 | 2001-05-29 | Bridgestone Corp | Pneumatic tire |
-
2001
- 2001-05-18 JP JP2001148649A patent/JP4513232B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4513232B2 (en) | 2010-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2009078790A (en) | Pneumatic radial tire | |
| EP1184204A1 (en) | Pneumatic tire and method of producing the same | |
| JP2006213278A (en) | Pneumatic tire, and its manufacturing method | |
| JP2002337509A (en) | Pneumatic radial tire | |
| JP6880768B2 (en) | Pneumatic tires | |
| JP3083862B2 (en) | Pneumatic tires for motorcycles | |
| US6250352B1 (en) | Motorcycle tire and method of making the same | |
| JP2002337510A (en) | Pneumatic radial tire | |
| JP4166308B2 (en) | Pneumatic tire | |
| JP2007001401A (en) | Pneumatic tire | |
| JP2005193758A (en) | Pneumatic tire | |
| JP6450111B2 (en) | Pneumatic tire | |
| JP2000301910A (en) | Pneumatic radial tire | |
| JP2021116043A (en) | Pneumatic radial tire, pneumatic radial tire manufacturing method, and tire vulcanization die | |
| JPH09240214A (en) | Pneumatic radial tire | |
| JP2004338502A (en) | Pneumatic radial tire, and method for manufacturing the same | |
| JP2021116044A (en) | Pneumatic tire, pneumatic tire manufacturing method, and tire vulcanization die | |
| JP3845514B2 (en) | Pneumatic tire | |
| JP4277980B2 (en) | Pneumatic tire | |
| JP4458836B2 (en) | Pneumatic radial tire | |
| JP4577005B2 (en) | Pneumatic tire for light truck | |
| JP3764801B2 (en) | Pneumatic radial tire | |
| JPH10119508A (en) | Pneumatic tire | |
| JP5084255B2 (en) | Manufacturing method of pneumatic radial tire | |
| JP3321458B2 (en) | Pneumatic tires for motorcycles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070306 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100201 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100209 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100401 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100420 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100503 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130521 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130521 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130521 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130521 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140521 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |