JP2713807B2 - Radial tire - Google Patents
Radial tireInfo
- Publication number
- JP2713807B2 JP2713807B2 JP2210200A JP21020090A JP2713807B2 JP 2713807 B2 JP2713807 B2 JP 2713807B2 JP 2210200 A JP2210200 A JP 2210200A JP 21020090 A JP21020090 A JP 21020090A JP 2713807 B2 JP2713807 B2 JP 2713807B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing elements
- reinforcing
- bundle
- belt
- 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.)
- Expired - Lifetime
Links
Landscapes
- Tires In General (AREA)
- Tyre Moulding (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、ラジアルタイヤ、とくにそのトレッド補
強を司るベルトの改良によって耐久性の向上を図ったラ
ジアルタイヤに関するものである。Description: TECHNICAL FIELD The present invention relates to a radial tire, and more particularly to a radial tire whose durability is improved by improving a belt for reinforcing a tread thereof.
（従来の技術） ラジアルタイヤのベルトは、タイヤの赤道面に対して
斜めの並列配列をなすスチールコードやスチールフィラ
メントによる補強素子が通常等間隔に埋設されたゴム引
き層として一般に用いられる。(Related Art) A belt of a radial tire is generally used as a rubberized layer in which reinforcing elements made of steel cords or steel filaments, which are obliquely arranged in parallel to the equatorial plane of the tire, are usually embedded at equal intervals.
これに対し鋼製ワイヤを相互隣接ワイヤの全長に沿う
接触の下で並置し、とくに互いにラッピングワイヤで拘
束するか又は接着剤で結合した補強ストリップを車両用
ゴムタイヤのベルト補強層に用いることが特開昭63−24
0402号公報に開示されている。In contrast, steel wires are juxtaposed under contact along the entire length of adjacent wires, and in particular, reinforcing strips bound to each other by wrapping wires or bonded with an adhesive are used for the belt reinforcing layer of rubber tires for vehicles. 63-24
No. 0402 discloses this.
（発明が解決しようとする課題） 補強素子の並行配列が等間隔とされて来た従来のベル
トにあっては、隣接ワイヤが全長に沿って互いに接触す
る配列であると否とに拘らずベルトの幅端にて各補強素
子の端末に面するゴムがタイヤの接地変形の度毎につつ
かれるため、はじめに微細なクラックを生じ、やがて補
強素子の隣接相互間にまたがって成長し、その後ベルト
の積層相互間にもつながって急拡大し、いわゆるベルト
セパレーションに至るき裂進展速度は格段に速く、これ
がラジアルタイヤの耐久性を決定づける。(Problems to be Solved by the Invention) In the conventional belt in which the parallel arrangement of the reinforcing elements is arranged at equal intervals, regardless of whether the adjacent wires are arranged to be in contact with each other along the entire length, the belt is not required. Since the rubber facing the end of each reinforcing element at the width end is pierced every time the tire is deformed by the ground, a minute crack is generated first, and then it grows between adjacent adjacent reinforcing elements, and then the belt The rate of crack growth leading to rapid expansion linked to the laminate, leading to so-called belt separation, is much faster, which determines the durability of the radial tire.
ここに上記したクラックの成長を抑えることが重要
で、そのためには補強素子の隣接相互間の間隔の広い方
がもちろん有利である反面、タイヤの軽量化の強い要請
に加えて必要とされる補強手段簡素化のため、補強素子
の線径を細くすることがのぞまれるのでその結果、同等
のタイヤ強度を保持するために、当然乍ら補強素子の打
ち込みを多くする外はなく、補強素子の間隔は却って狭
くなり、クラックの成長抑制とは相容れないが、この点
について上掲公開公報にも何ら触れることがない。Here, it is important to suppress the growth of cracks described above. For this purpose, it is naturally advantageous to increase the distance between adjacent reinforcing elements, but on the other hand, in addition to the strong demand for reducing the weight of tires, the necessary reinforcing In order to simplify the means, it is desired to reduce the wire diameter of the reinforcing element. As a result, in order to maintain the same tire strength, it is natural that the driving of the reinforcing element is increased, and the spacing between the reinforcing elements is not reduced. On the contrary, it becomes narrower and incompatible with crack growth suppression, but this point is not mentioned in the above-mentioned publication.
そこでベルトの幅端にてゴム中に補強素子の末端に面
して発生する微細なクラックの、その後の成長進展に由
来する、タイヤ耐久性の劣化を防ぐには、補強素子を数
本以内の束毎に区分し、束内で隣接する補強素子を互い
接触するように揃えることによって束間での広い間隔を
確保する配列とすることにより、束間の分散間隔におけ
るゴム破壊の成長をおくらせる手法は有効である。Therefore, in order to prevent deterioration of tire durability due to the subsequent growth of fine cracks occurring in the rubber at the width end of the belt facing the end of the reinforcing element, it is necessary to use several reinforcing elements. By separating the bundles into bundles and arranging the reinforcing elements adjacent to each other in the bundle so as to be in contact with each other, a wide gap between the bundles is ensured, thereby increasing the growth of rubber breakage at the dispersion intervals between the bundles. The method is effective.
しかるにこの場合束内で互いに接触して隣接する補強
素子の相互間におけるゴムの浸透が妨げられることによ
るフレッティングの不利やさらに、タイヤの走行中にお
けるトレッドに生じたカットから水分が補強素子の接触
域を伝わって侵入し補強素子の発誘を来すうれいのある
ことも、この種の補強部材に課される問題であり、この
ような課題に対して有利に適合し得るように改良したベ
ルトをそなえるラジアルタイヤを与えることがこの発明
の目的である。In this case, however, the disadvantages of fretting due to the fact that rubber is prevented from penetrating between the adjacent reinforcing elements in contact with each other in the bundle, and furthermore, moisture from the cuts generated in the tread during running of the tire may cause the contact of the reinforcing elements. It is also a problem imposed on this type of reinforcing member that it is possible to penetrate through the area and to invite the reinforcing element, and the belt is improved so that it can be advantageously adapted to such a problem. It is an object of the present invention to provide a radial tire having:
（課題を解決するための手段） 上記目的は次に要約する構成により的確に成就され
る。(Means for Solving the Problems) The above-mentioned object is properly achieved by the configurations summarized below.
タイヤの赤道面に対し斜めの並置配列をなすスチール
モノフィラメントの補強素子を有するゴム引き層からな
るタイヤのトレッド補強に供したベルトをそなえている
ラジアルタイヤにおいて、 ゴム引き層内を占める個々に独立した上記補強素子の
うち、少なくとも大部分の補強素子を数本以内の束毎に
区分することにより、その束とこれに隣接する束または
補強素子との間を、上記補強素子を等間隔配列した場合
の各補強素子間の間隔に比して広い間隔（δ）とし、か
つ各区分の束内で互いに隣接する補強素子がその長さ方
向に沿って部分的に離間したすきま（ｇ）を上記間隔
（δ）より狭くする補強素子の並置配列を特徴とする、
ラジアルタイヤ。In a radial tire provided with a belt used for tread reinforcement of a tire having a rubberized layer having a reinforcing element of a steel monofilament obliquely arranged with respect to the equatorial plane of the tire, individually occupying the rubberized layer When the reinforcing elements are arranged at equal intervals between the bundle and a bundle or reinforcing element adjacent to the bundle by dividing at least most of the reinforcing elements into bundles of several or less. And a gap (g) in which the reinforcing elements adjacent to each other in the bundle of each section are partially separated from each other along the length direction thereof. (Δ) characterized by juxtaposition of reinforcing elements to be narrower,
Radial tire.
ここに束が同一本数の補強素子よりなる場合、また逆
に異なる数本の補強素子よりなる場合の何れにあっても
上記の目的に適合するが、ベルトによるタイヤ補強に必
要とされるゴム引き層内の補強素子の総本数の如何によ
って、束の区分上の剰余となる補強素子が含まれること
があり得るので、束の区分からはみ出した補強素子につ
いては、異なる数本の補強素子よりなる束もそうである
が、タイヤの全周にわたってほぼ均整になるような配置
とするを可とする。Here, whether the bundle is made up of the same number of reinforcing elements or conversely, it is made up of several different reinforcing elements, the above purpose is met, but the rubberization required for tire reinforcement with a belt Depending on the total number of reinforcing elements in the layer, it is possible that a reinforcing element that is a surplus on the section of the bundle may be included, so for a reinforcing element that protrudes from the section of the bundle, it consists of several different reinforcing elements. As with bundles, the arrangement may be such that it is approximately even over the entire circumference of the tire.
この発明ではベルトに供するスチールモノフィラメン
トによる補強素子のゴム引き層を用意するため、とくに
櫛歯形ロールを改良したカレンダがけロールによってベ
ルトトリートをまずつくる。この櫛歯形ロールはこれに
よってスチールモノフィラメントを数本毎、例えば２本
宛の束に区分した並置配列をもってカレンダがけロール
によりゴムシートと合体するように役立てる。According to the present invention, a belt treatment is first formed by a calendering roll having an improved comb-shaped roll, in particular, in order to prepare a rubberized layer of a reinforcing element made of a steel monofilament to be used for a belt. The comb-tooth rolls thereby serve to combine the rubber sheets with the calendering rolls in a juxtaposed arrangement of several, for example two, bundles of steel monofilaments.
櫛歯形ロールは、補強素子の上記並置配列のための複
数の周溝を有し、この周溝は並置配列する数の補強素子
の外径の合計に比しより広目とした溝幅を有するものと
し、それらの隣接相互間をへだてるカラー状櫛歯を束間
の間隔と対応する厚みとする。The comb-shaped roll has a plurality of circumferential grooves for the juxtaposed arrangement of the reinforcing elements, and the circumferential grooves have a wider groove width than the sum of the outer diameters of the juxtaposed number of reinforcing elements. In this case, the thickness of the color comb teeth extending between the adjacent bundles is set to correspond to the interval between the bundles.
櫛歯形ロールは、必要により補強素子の巻出し方向と
直交する向きで往復微動させることによって、区分束６
内に、隣接する補強素子があるところで相互接触し次の
接触に至るまでの間ではすきまができるように補強素子
９をわずか蛇行的となる並置配列を生じさせる。The comb-tooth-shaped roll is reciprocated finely in a direction perpendicular to the unwinding direction of the reinforcing element, if necessary, so that the divided bundle 6
Within it, the reinforcing elements 9 are arranged in a slightly meandering juxtaposition so that there is a gap between adjacent reinforcing elements where they contact each other and until the next contact.
このようにしてつくられるベルトトリートは、これを
ベルト補強に用いるとき、補強素子のタイヤの赤道面に
対する必要な傾斜に応じてトリート幅を斜め裁ちし、つ
いでトリードの幅端を耳同士を再接合したゴムストリッ
プとし、ライナーとともに原反コイルに巻きとって、タ
イヤの造成工程に供される。When using this belt treat for belt reinforcement, the treat width is cut obliquely according to the required inclination of the reinforcing element with respect to the equatorial plane of the tire, and then the width ends of the tread are rejoined to the ears. The obtained rubber strip is wound around a raw coil together with a liner, and is subjected to a tire building process.
（作 用） ラジアルタイヤのベルトの幅端におけるゴム破壊の過
程が、すでに述べたように補強素子の端末によってこれ
に面するゴム中に、タイヤの変形の反覆の度毎にくり返
されるつつきが微細なクラックを生じさせ、これが補強
素子の表面に沿って進む初期段階はともかくとして、従
来の技術に従い等間隔で補強素子が並行配列された場合
にいち早く補強素子の隣接相互間にまたがって成長し初
めるや忽ちにしてベルトの積層相互間につながって、急
拡大しベルトセパレーションに進展する不利があったの
に対し、この発明にあっては、束と束又は束に属しない
補強素子が混在するときその補強素子と束との間の間隔
（以下、単に間隔と示す）が等間隔配列の場合に比しは
るかに広がるためこの間隔を隔だてて隣接する補強素子
間で初期段階以降におけるクラックの成長が間隔に応じ
て遅れることとなるのでその後にベルトセパレーション
に急進展するようなベルトの積層相互間へのき裂拡大は
有効に抑制される。(Operation) As described above, the process of rubber breakage at the width end of the belt of the radial tire is repeated by the end of the reinforcing element into the rubber facing the same every time the tire is repeatedly deformed. Regardless of the initial stage, which causes fine cracks and propagates along the surface of the reinforcing element, it grows quickly between adjacent reinforcing elements when the reinforcing elements are arranged in parallel at equal intervals according to the prior art. At the beginning, there is a disadvantage that the belt is connected immediately between the stacks of the belt, and the belt is rapidly expanded and the belt is separated. In contrast, in the present invention, a bundle and a bundle or a reinforcing element not belonging to the bundle are mixed. At this time, the interval between the reinforcing element and the bundle (hereinafter, simply referred to as an interval) is much wider than that in the case of an evenly-spaced arrangement. Then come to between the stacked cross belt so as to abruptly progress the belt separation 裂拡 size because crack growth in floors or later so that the delayed depending on the distance is effectively suppressed.
ここでゴム引き層内の補強素子の総本数のうちごく一
部の補強素子のみを束として、タイヤの全周に渡ってほ
ぼ均整になる様な分散配置としても、束とこれに隣接す
る補強素子との間隔が従来の技術に従い等間隔配列とし
た場合の補強素子の間隔に比べて広がることから、ベル
トセパレーションに急進展するベルトの積層相互間への
き裂の拡大は抑制される。しかしながらその効果は著し
いものとは言えない場合もあるから束の区分に関しては
全周の少なくとも半数以上の補強素子を対象とする。こ
うすることで効果も著しいものとなる。Here, only a small number of the reinforcing elements in the total number of reinforcing elements in the rubberized layer are bundled, and even if they are arranged in a distributed manner so that they are almost evenly distributed over the entire circumference of the tire, the bundle and the reinforcing members adjacent thereto may be used. Since the spacing from the elements is wider than the spacing between the reinforcing elements when the elements are arranged at regular intervals according to the conventional technique, the propagation of cracks between the stacked layers of the belt, which rapidly progresses to the belt separation, is suppressed. However, the effect may not be remarkable in some cases, so that the bundle division targets at least half or more of the reinforcing elements around the entire circumference. By doing so, the effect is remarkable.
なお上記した各区分の束内で互いに隣接する補強素子
が離間するすき間は、上記の間隔を拡大しようといる意
図には反するが、このすき間へのゴム浸透による利益を
確保するため少なくとも部分的に接触が必要となるので
ある。In addition, the gap in which the reinforcing elements adjacent to each other are separated from each other in the bundle of the above-mentioned sections is contrary to the intention of expanding the above-mentioned gap, but at least partially secures the benefit by rubber penetration into the gap. Contact is required.
ここに束内の補強素子を数本以内とするには、この数
本の多い程間隔は広くできて有利な反面、束内の補強素
子の端末の末接着部分が連なって、大きくなって、束内
に起るき裂進展の不利を伴うことからせいぜい数本の束
にすることが必要である。Here, in order to make the reinforcing elements in the bundle less than several, the larger the number of the reinforcing elements, the more the interval can be advantageously increased, but on the other hand, the end bonding portions of the terminals of the reinforcing elements in the bundle are connected and become larger, At most several bundles are necessary due to the disadvantage of crack propagation occurring in the bundles.
（実施例） 例１ 第１図に断面を示したサイズ185/70R14の乗用車用ラ
ジアルタイヤ１のトレッド補強用ベルト２として在来例
における補強素子の等間隔配列による場合とこの発明に
関し上記したベルトトリートを用いた場合における補強
素子の種々な配列とを、対比して第２図〜第６図に図解
し、図中３がスチールモノフィラメント、４がその束で
ある。(Example) Example 1 As a tread reinforcing belt 2 of a radial tire 1 for a passenger car having a size of 185 / 70R14 whose cross section is shown in FIG. FIGS. 2 to 6 show various arrangements of reinforcing elements in the case of using treats, in which 3 is a steel monofilament and 4 is a bundle thereof.
トレッド補強用ベルト２は、第２〜６図各上段（ａ）
に示した在来例で何れもゴム引き層中におけるスチール
モノフィラメント３の配列が等間隔ｓであるのに対し、
各図の下段（ｂ），（ｃ）及び（ｄ）にそれぞれこの発
明の事例について補強素子の長手方向に隔たる３か所A,
B及びＣの断面を示すようにスチールモノフィラメント
３の４本宛、２本及び３本交互並びに２本宛の束４と
し、束４の相互間には間隔δを隔て、また束４内で隣接
するモノフィラメント３は、ところどころにすきまｇを
隔てる並置配列とされている。The tread reinforcement belt 2 is shown in the upper part (a) of FIGS.
In each of the conventional examples shown in the above, the arrangement of the steel monofilaments 3 in the rubberized layer is equally spaced s,
The lower parts (b), (c) and (d) of each figure show three points A,
As shown in the cross-sections B and C, a bundle 4 of four steel monofilaments 3, two and three alternates and two steel monofilaments 3 is provided, and the bundles 4 are separated from each other by an interval δ and adjacent to each other in the bundle 4. The monofilaments 3 are arranged side by side with a gap g in some places.
間隔δ，δ′につき添付A,B,Cは断面位置をあらわ
し、その大きさはその断面でのすきまｇに依存するので
あるが、何れの断面についてもすきまｇの最大間隔より
は広くする。The attachments A, B, and C indicate the positions of the cross sections for the intervals δ and δ ′, and the size thereof depends on the clearance g in the cross section.
すきまｇはスチールモノフィラメントの長さ方向に沿
って増減し得るが、最大間隔をゴム浸透の度合によって
定めればよい。なお、ここでは円形断面のスチールモノ
フィラメントを用いたが、楕円断面等いずれの断面形状
のスチールモノフィラメントを用いてもよい。The clearance g can be increased or decreased along the length of the steel monofilament, but the maximum interval may be determined according to the degree of rubber penetration. Although a steel monofilament having a circular cross section is used here, a steel monofilament having any cross section such as an elliptical cross section may be used.
上記したところに従いフィラメント径を異にする補強
素子を用いて試作した表１に示す各供試タイヤを内圧1.
9kgf/cm2、荷重455kgの条件下でドラム試験機にかけ、
速度80km/hで６万km走行させたのちに解剖して、ベルト
２の幅端に生じた亀裂長さを測定して、その成績を表１
にあわせ掲げ得た。Each of the test tires shown in Table 1, which was prototyped using reinforcing elements having different filament diameters according to the above, had an internal pressure of 1.
Under a condition of 9 kgf / cm 2 and a load of 455 kg, the drum test machine was used.
After running 60,000 km at a speed of 80 km / h, dissected and measured the length of the crack generated at the width end of the belt 2, and the results are shown in Table 1.
I got it up.
また、第５〜６図の各上段（ａ）に示す在来例に対
し、全周の半数未満を束に区分した例を図５（ｂ）〜
（ｄ）に全周の半数以上の束に区分した例を図（ｂ）〜
（ｄ）にそれぞれ示した。表２にその結果を示す。5 (b) to 5 (b) show examples in which less than half of the entire circumference is divided into bundles with respect to the conventional example shown in each upper row (a) of FIGS.
(D) shows an example in which the bundle is divided into half or more bundles of the entire circumference.
The results are shown in (d). Table 2 shows the results.
なお、上例でベルト２は２枚積層であり、各層の補強
素子はタイヤ赤道面に対して24゜で互いに交錯してお
り、トレッド側の層の方が、カーカス側の層よりやや幅
が狭くなっている。上記した、ベルト幅端近くに生じた
亀裂は、トレッド側の層にのみ発生しており、従ってそ
の測定結果もトレッド側の層のみについてである。 In the above example, the two belts 2 are laminated, and the reinforcing elements of each layer intersect each other at 24 ° with respect to the tire equatorial plane, and the tread side layer has a slightly wider width than the carcass side layer. It is getting smaller. The cracks generated near the width end of the belt described above are generated only in the tread side layer, and the measurement results are also obtained only for the tread side layer.
この事実にもとづけば、本発明のゴム引き層をトレッ
ド側の層にのみ適用することも勿論可とするものであ
る。Based on this fact, it is of course possible to apply the rubberized layer of the present invention only to the tread side layer.
例２ 第７図に示したサイズ11/70 R22.5のトラック・バス
用ラジアルタイヤのトレッド補強用ベルト２として上記
例１と同様に図解した第８図および第９図に示すゴム引
き層を適用したタイヤを試作し、供試タイヤを内圧7.00
kgf/cm2、荷重2600kgの条件の下でドラム試験機にか
け、速度60km/hで、10万km走行させたのち、解剖してベ
ルトの幅端近くに生じた亀裂長さを測定して、その結果
を表３に示した。Example 2 A rubberized layer shown in FIGS. 8 and 9 illustrated in the same manner as in Example 1 above as a tread reinforcing belt 2 for a radial tire for trucks and buses of size 11/70 R22.5 shown in FIG. Prototype the applied tire, and set the test tire to an internal pressure of 7.00.
kgf / cm 2 , a drum test machine under the conditions of a load of 2600 kg, and after running 100,000 km at a speed of 60 km / h, dissected and measured the crack length generated near the width end of the belt, Table 3 shows the results.
また第10〜11図の各上段（ａ）に示した在来例に対
し、全周の半数末端を束に区分した例を第10図（ｂ）〜
（ｄ）に、全周の半数以上を束に区分した例を第11図
（ｂ）〜（ｄ）にそれぞれ示し、上記と同様に評価した
結果を表４に示した。10 (b) to 10 (b) show an example in which half of the entire circumference is divided into bundles in contrast to the conventional example shown in each upper part (a) of FIGS.
11 (b) to (d) show examples in which half or more of the entire circumference is divided into bundles, and Table 4 shows the results of evaluation in the same manner as described above.
なお、ベルト２は上例で４枚積層になり、各層の補強
素子はトレッド側から各々左18゜，左18゜，右18゜，右
50゜とタイヤ赤道面に対して傾斜している。 In addition, the belt 2 is laminated four in the above example, and the reinforcing element of each layer is 18 層 left, 18 左 left, 18 ゜ right, 18 右 right from the tread side, respectively.
It is inclined at 50 ゜ with respect to the tire equatorial plane.
上記したベルト幅端近くに生じた亀裂は、トレッド側
から２枚めの層にのみ発生しており、従ってその測定結
果もその層のみについてである。The above-mentioned cracks generated near the belt width end occur only in the second layer from the tread side, and therefore the measurement results are also for only that layer.
この事実にもとづれば、本発明のゴム引き層をかかる
トレッド側から２枚めの層にのみ用いることは勿論可で
ある。Based on this fact, it is of course possible to use the rubberized layer of the present invention only for the second layer from the tread side.
（発明の効果） この発明により、ラジアルタイヤのトレッド補強の弱
点とされて来たベルトの幅端でのセパレーションの原因
であるベルトの補強素子のクラック成長の有効な抑制
を、フレッティングの不利の阻止及びトレッドカットか
らの水分侵入の阻止にあわせ実現することができる。(Effect of the Invention) According to the present invention, it is possible to effectively suppress the crack growth of the reinforcing element of the belt, which is the cause of the separation at the width end of the belt, which has been regarded as the weak point of the tread reinforcement of the radial tire, at the disadvantage of fretting. It can be realized in accordance with the prevention and the prevention of the intrusion of moisture from the tread cut.
第１図は乗用車の供試タイヤの断面図、 第２図、第３図、第４図、第５図及び第６図は補強素子
配列の比較図、 第７図はトラック・バス用の供試タイヤの断面図、 第８図、第９図、第10図、第11図は補強素子配列の比較
図である。 １……タイヤ ２……トレッド補強用ベルト ３……スチールモノフィラメント ４……束 δ……間隔 ｇ……すきまFIG. 1 is a sectional view of a test tire of a passenger car, FIGS. 2, 3, 4, 5, and 6 are comparative views of reinforcing element arrangements, and FIG. FIG. 8, FIG. 9, FIG. 10, FIG. 11, and FIG. 11 are cross-sectional views of the test tire, and are comparison diagrams of the reinforcing element arrangement. DESCRIPTION OF SYMBOLS 1 ... Tire 2 ... Tread reinforcement belt 3 ... Steel monofilament 4 ... Bundle δ ... Spacing g ... Clearance
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−149929（ＪＰ，Ａ) 特開 昭63−240402（ＪＰ，Ａ) 特開 平２−210200（ＪＰ，Ａ) 実開 昭62−120004（ＪＰ，Ｕ) 実開 昭58−113504（ＪＰ，Ｕ) 実開 昭64−24603（ＪＰ，Ｕ) 米国特許5188685（ＵＳ，Ａ) 米国特許1608102（ＵＳ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-149929 (JP, A) JP-A-63-240402 (JP, A) JP-A-2-210200 (JP, A) 120004 (JP, U) Japanese Utility Model Application No. 58-113504 (JP, U) Japanese Utility Model Application No. 64-24603 (JP, U) US Patent 5,188,865 (US, A) US Patent 1,608,102 (US, A)
Claims (3)
すスチールモノフィラメントの補強素子を有するゴム引
き層からなるタイヤのトレッド補強に供したベルトをそ
なえているラジアルタイヤにおいて、 ゴム引き層内を占める個々に独立した上記補強素子のう
ち、少なくとも大部分の補強素子を数本以内の束毎に区
分することにより、その束とこれに隣接する束または補
強素子との間を、上記補強素子を等間隔配列した場合の
各補強素子間の間隔に比して広い間隔（δ）とし、かつ
各区分の束内で互いに隣接する補強素子がその長さ方向
に沿って部分的に離間したすきま（ｇ）を上記間隔
（δ）より狭くする補強素子の並置配列を特徴とする、
ラジアルタイヤ。A radial tire provided with a belt used for reinforcing a tread of a tire, comprising a rubberized layer having a reinforcing element of a steel monofilament obliquely arranged with respect to an equatorial plane of the tire. Of the individual reinforcing elements occupied individually, by dividing at least most of the reinforcing elements into bundles of several or less, between the bundle and a bundle or reinforcing element adjacent thereto, the reinforcing element A clearance (δ) wider than the spacing between the reinforcing elements when arranged at equal intervals, and a clearance in which reinforcing elements adjacent to each other in the bundle of each section are partially separated along the length direction ( g) is narrower than the spacing (δ), characterized by juxtaposed arrangement of reinforcing elements,
Radial tire.
１項に記載したラジアルタイヤ。2. The radial tire according to claim 1, wherein the bundle comprises the same number of reinforcing elements.
第１項に記載したラジアルタイヤ。3. The radial tire according to claim 1, wherein the bundle comprises a different number of reinforcing elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2210200A JP2713807B2 (en) | 1990-08-10 | 1990-08-10 | Radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2210200A JP2713807B2 (en) | 1990-08-10 | 1990-08-10 | Radial tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0495506A JPH0495506A (en) | 1992-03-27 |
| JP2713807B2 true JP2713807B2 (en) | 1998-02-16 |
Family
ID=16585446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2210200A Expired - Lifetime JP2713807B2 (en) | 1990-08-10 | 1990-08-10 | Radial tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2713807B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130206302A1 (en) * | 2010-06-29 | 2013-08-15 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960033802A (en) * | 1995-03-31 | 1996-10-22 | 남일 | Pneumatic tire with improved noise reduction performance |
| JP2002225507A (en) * | 2001-02-02 | 2002-08-14 | Bridgestone Corp | Pneumatic radial tire |
| JP2003170703A (en) * | 2001-12-05 | 2003-06-17 | Bridgestone Corp | Pneumatic tire |
| CN1305691C (en) * | 2001-12-27 | 2007-03-21 | 株式会社普利司通 | Pneumatic radial tire for construction vehicle, belt layer of the radial tire, and method of manufacturing the radial tire |
| JP4756871B2 (en) * | 2005-02-10 | 2011-08-24 | 株式会社ブリヂストン | Pneumatic radial tire |
| WO2009133826A1 (en) * | 2008-05-01 | 2009-11-05 | 株式会社ブリヂストン | Pneumatic tire for heavy load |
| JP2010111354A (en) * | 2008-11-10 | 2010-05-20 | Bridgestone Corp | Tire |
| JP5257436B2 (en) * | 2010-10-05 | 2013-08-07 | 横浜ゴム株式会社 | Pneumatic radial tire |
| JP5257412B2 (en) * | 2010-06-29 | 2013-08-07 | 横浜ゴム株式会社 | Pneumatic radial tire |
| JP5257411B2 (en) * | 2010-06-29 | 2013-08-07 | 横浜ゴム株式会社 | Pneumatic tire |
| JP6976908B2 (en) * | 2018-06-22 | 2021-12-08 | 株式会社ブリヂストン | Resin coated cord and pneumatic tire |
| JP7351846B2 (en) * | 2018-10-17 | 2023-09-27 | 株式会社ブリヂストン | Elastomer-metal cord composite and tires using the same |
| EP3868575A4 (en) * | 2018-10-17 | 2022-07-13 | Bridgestone Corporation | Elastomer-metal cord composite body, and tire using same |
| JP7199311B2 (en) * | 2019-06-19 | 2023-01-05 | 株式会社ブリヂストン | pneumatic tire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1608102A (en) | 1923-11-23 | 1926-11-23 | Hartford Rubber Works Co | Weftless fabric and method of manufacturing same |
| US5188685A (en) | 1989-11-07 | 1993-02-23 | The Goodyear Tire & Rubber Company | Pneumatic radial tire including steel belt cords of 2+2x.30ht construction |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113504U (en) * | 1982-01-29 | 1983-08-03 | 株式会社ブリヂストン | pneumatic radial tire |
| JPH0663187B2 (en) * | 1985-12-23 | 1994-08-17 | 東京製鋼株式会社 | Steel cord for reinforcing plastics |
| JP2514330Y2 (en) * | 1986-01-23 | 1996-10-16 | 住友ゴム工業 株式会社 | Radial tire |
| JPS63240402A (en) * | 1986-10-10 | 1988-10-06 | エヌ・ヴイ・ベカルト・エス・エイ | Reinforcing strip |
-
1990
- 1990-08-10 JP JP2210200A patent/JP2713807B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1608102A (en) | 1923-11-23 | 1926-11-23 | Hartford Rubber Works Co | Weftless fabric and method of manufacturing same |
| US5188685A (en) | 1989-11-07 | 1993-02-23 | The Goodyear Tire & Rubber Company | Pneumatic radial tire including steel belt cords of 2+2x.30ht construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130206302A1 (en) * | 2010-06-29 | 2013-08-15 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| DE112011102189B4 (en) | 2010-06-29 | 2024-03-14 | The Yokohama Rubber Co., Ltd | tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0495506A (en) | 1992-03-27 |
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