JPH0478603A - Tire for motorcycle - Google Patents
Tire for motorcycleInfo
- Publication number
- JPH0478603A JPH0478603A JP2109349A JP10934990A JPH0478603A JP H0478603 A JPH0478603 A JP H0478603A JP 2109349 A JP2109349 A JP 2109349A JP 10934990 A JP10934990 A JP 10934990A JP H0478603 A JPH0478603 A JP H0478603A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- ply
- band
- tire
- belt layer
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 21
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000011324 bead Substances 0.000 claims description 11
- 101100506443 Danio rerio helt gene Proteins 0.000 description 2
- 101100506445 Mus musculus Helt gene Proteins 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Tyre Moulding (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、螺旋状に巻回することによりベルト層を形成
しうる帯状プライの断面形状を定めることにより、均質
なベルト層が形成でき、品質を高めるうる自動二輪車用
タイヤに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a belt-like ply that can form a homogeneous belt layer by determining the cross-sectional shape of a belt-like ply that can be spirally wound to form a belt layer. Regarding motorcycle tires that can improve quality.
近年、高速道路網が整備されるに伴い自動二輪車にあっ
ても四輪車と同等の走行性能が要求されつつある。In recent years, with the development of expressway networks, there is a growing demand for motorcycles to have driving performance equivalent to that of four-wheeled vehicles.
このような二輪車用タイヤにあっては、例えば旋回時に
おいて深いバンク角を有して旋回するなど四輪車とは異
なる二輪車特有の操縦性能を充足せねばならない。Such tires for two-wheeled vehicles must satisfy the maneuverability characteristic of two-wheeled vehicles, which is different from that of four-wheeled vehicles, such as the ability to turn with a deep bank angle when turning, for example.
トレッド部にあっても、トレッド半径を小さくし前記旋
回の仕様に対応させるとともに、トレッド部の略全域が
接地することにより、クラウン部、トレッドショルダ部
間の剛性の均等化が必要となる。 自動二輪車を安全に
かつ高速走行しうるタイヤとしては、例えば特開昭６１
−８５２０３号公報に開示しかつ第８図に示す如く、単
数又は複数本のコードｄ・・−をトレッドゴムｐに埋設
した帯状プライｂをトレッド面の形状に合わせ膨らみを
もたせて螺旋状に巻回することによって、ベルト層を形
成したものが存在する。又このような帯状プライｂは従
来では断面形状を矩形に形成し、第９図に示す如く、螺
旋巻きされた帯状プライの隣り合う側！’ｌ、ｅが互い
に接するように巻回されていた。Even in the tread portion, it is necessary to reduce the tread radius to meet the above-mentioned turning specifications, and to equalize the rigidity between the crown portion and the tread shoulder portion by ensuring that substantially the entire tread portion is in contact with the ground. As a tire that allows motorcycles to run safely and at high speeds, for example, JP-A-61
As disclosed in Japanese Patent No. 85203 and shown in FIG. 8, a belt-shaped ply b in which one or more cords d...- are embedded in a tread rubber p is spirally wound with a bulge that matches the shape of the tread surface. There are some that have a belt layer formed by rotating them. Conventionally, such a belt-shaped ply b has a rectangular cross-sectional shape, and as shown in FIG. 9, adjacent sides of the spirally wound belt-shaped ply! 'l and e were wound so that they touched each other.
前記構造のものではベルトコードがヘルド層の一端を起
点として周方向に連続して連らなっている１こめ、複数
枚のプライ片をタイヤ周方向に継いた従来のベルト層の
ように、接続部において剛性断層が生しることな（、高
速走行における直進性、旋回性能に多少の向上が見られ
るが、巳かし自動二輪車用タイヤのようにトレッド曲率
半径が小さいタイヤにあっては、トレッド面は、その＃
Ａ縁近傍においてタイヤ赤道面に対して大きく傾くこと
となり、その傾き角度は４５°に及ふこととなり、帯状
プライｂをトレッド端縁近傍で巻付ける際には、第９図
に示す如く、タイヤ赤道Ｃに対して平行する向きで即ち
巻付は面ｆと傾斜角を有して該巻付は面ｆに近づき着床
することとなる。その結果、トレッド端縁近傍では、隣
り合う測禄ｅ、ｅのエツジ部分り、ｈが互いに干渉する
ことによって、帯状プライｂの側ｍｅ、ｅ間に空隙ｇが
生：）る。又巻付は面ｆニこ帯状プライｂの側縁ｅがそ
のまま着床することもある。In the structure described above, the belt cord is connected continuously in the circumferential direction starting from one end of the heald layer, like a conventional belt layer in which multiple ply pieces are connected in the tire circumferential direction. (There is some improvement in straight running performance and turning performance at high speeds, but for tires with a small tread radius of curvature such as motorcycle tires, The tread surface is #
The area near the edge A is largely inclined with respect to the tire equatorial plane, and the angle of inclination reaches 45°.When wrapping the strip ply b near the tread edge, the tire In a direction parallel to the equator C, that is, the winding has an inclination angle with the plane f, and the winding approaches the plane f and lands on the ground. As a result, in the vicinity of the tread edge, the edge portions of the adjacent grooves e and e interfere with each other, so that a gap g is created between the sides me and e of the strip ply b. In addition, when winding, the side edge e of the strip-shaped ply b may land on the surface F as it is.
このように帯状プライｂの端縁ｅ、ｅ間に空隙ｇが生し
、又帯状プライｂが巻付は面と密着しないためベルト層
は、その端部シこおいて剛性の断層が生じることにより
、トレッドショルダ部の！［が低下する結果、バンク角
を有して旋回する際には操縦安定性が低下し、旋回性能
が劣ることとなる。又ベルトＮ端部においては帯状プラ
イは互いに密接していないため、該端部では剥離が生じ
易く耐久性に劣るという問題がある。In this way, a gap g is created between the edges e and e of the belt-shaped ply b, and since the belt-shaped ply b does not come into close contact with the surface when wrapped, a rigid fault occurs at the end of the belt layer. Due to this, the tread shoulder area! As a result of the decrease in [, the steering stability decreases when turning with a bank angle, resulting in poor turning performance. Furthermore, since the belt-like plies are not in close contact with each other at the N end of the belt, there is a problem that peeling is likely to occur at this end, resulting in poor durability.
従ってベルト層を帯状プライの巻回によって形成するに
は、従来では巻付は面の許容最大傾斜角度αを３０度以
下に制限しており、自動二輪車のようにトレッド半径の
小さいタイヤにあっては、ショルダ部の剛性を高めるこ
とは出来なかった。Therefore, in order to form a belt layer by winding a belt-shaped ply, conventionally, the maximum permissible inclination angle α of the winding surface is limited to 30 degrees or less, which is difficult for tires with a small tread radius such as motorcycles. However, it was not possible to increase the rigidity of the shoulder part.
発明者らは従来見過ごされていた帯状プライの端面形状
を改良することにより、帯状プライをベルト層の全域に
亘って空隙が生じることなく確実に巻付けられたものを
形成しうろことを見出したのである。The inventors have discovered that by improving the end face shape of the belt ply, which had been overlooked in the past, it is possible to form scales in which the belt ply is reliably wrapped over the entire belt layer without creating any voids. It is.
本発明は、帯状プライの両側部に先細状の結合部を設け
ることを基本として、トレッド半径の小なタイヤであっ
ても、帯状プライをトレッド端縁近傍まで精度よくかつ
確実に巻付けでき、旋回性能の向上と耐久性とを向上し
うる自動二輪車用タイヤの提供を目的としている。The present invention is based on providing tapered joints on both sides of the strip ply, and even in tires with a small tread radius, the strip ply can be wound accurately and reliably up to the vicinity of the tread edge. The objective is to provide a motorcycle tire that can improve turning performance and durability.
本発明は、トレッド部からサイドウオール部をへてビー
ド部のビードコアの周りを折返すカーカスと、該カーカ
スの外側かつトレッド部の内方に配されるベルト層とを
具え、前記ベルト層は、本以上のベルトコードをトレッ
ドゴムに埋設した小巾しかも一本以上の帯状プライを螺
旋状に巻回することにより形成されるとともに、前記帯
状プライは両側部に、該帯状プライが巻回されることに
より隣り合う帯状プライの側部と重なり互いに粘着する
タイヤ軸方向に先細状の結合部を配置してなる自動二輪
車用タイヤである。The present invention includes a carcass that passes from a tread portion through a sidewall portion and folds around a bead core of a bead portion, and a belt layer disposed outside the carcass and inside the tread portion, the belt layer comprising: It is formed by spirally winding one or more belt-like plies in which a belt cord of more than one book is embedded in the tread rubber, and the belt-like plies are wound around both sides of the belt-like ply. This is a motorcycle tire in which a tapered joint part is arranged in the axial direction of the tire, thereby overlapping the side parts of adjacent band-shaped plies and adhering to each other.
ベルト層は、ベルトコードをトレッドゴムに埋設した小
巾の帯状プライを螺旋状に巻回し形成しているため、ベ
ルト層には周方向の剛性断層が生じることなく、高速走
行時における直進走行性を高めうる。The belt layer is formed by spirally winding a narrow band-shaped ply with a belt cord embedded in the tread rubber, so there is no rigidity fault in the circumferential direction in the belt layer, and straight running performance is achieved during high-speed running. can increase
又帯状プライは、両側部にタイヤ軸方向に先細状をなし
、隣り合う帯状の側部と重なり互いに粘着する結合部を
設けているため、トレッド半径が小さい自動二輪車用タ
イヤであっても、隣り合う帯状プライの側部は密着し、
結合し、断面矩形の従来の構造のもののように、ベルト
Ｎ端縁近傍において帯状プライ間に空隙が生じることな
く、又ベルト層端部に帯状プライの緩みが生しることな
く、ベルト層をその全中に亘って均質に形成しうる。In addition, the band-shaped ply has a tapered shape on both sides in the tire axial direction, and has a bonding part that overlaps and adheres to the adjacent band-shaped sides, so even if it is a motorcycle tire with a small tread radius, The sides of the matching strip plies are tightly attached,
The belt layer can be bonded without creating a gap between the belt-like plies near the edge of the belt N, or loosening the belt-like ply at the end of the belt layer, unlike in conventional structures with a rectangular cross-section. It can be formed uniformly throughout.
従って、トレッドショルダ部の剛性が均一化され、安定
し、高速旋回性を向上することが出来、しかもベルト層
端部に生じがちであった帯状プライの緩みを防止でき、
トレッド部の耐久性を向上しうる。Therefore, the rigidity of the tread shoulder portion is made uniform and stable, and high-speed turning performance can be improved, and the loosening of the strip ply that tends to occur at the end of the belt layer can be prevented.
The durability of the tread portion can be improved.
図において自動二輪車用タイヤ１は、トレッド部２とそ
の両端からタイヤ半径方向内側に向けてのびるサイドウ
オール部３と、該サイドウオール部３のタイヤ半径方向
内端に位置するビード部４とを有し、又自動二輪車用タ
イヤ１には、前記トレッド部２からサイドウオール部３
を遺りビード部４にのびる本体部６ａに、前記ビードコ
ア５をタイヤ軸方向内側から外側に向かって巻き上げる
巻上げ部６ｂを設けたカーカス６と、トレッド部２の内
部かつカーカス６の半径方向外側に配されるベルト層７
とを具え、又ビードコア５のタイヤ半径方向外側かつ巻
上げ部６ｂと本体部６ａとの間に断面三角形状のビード
エーペックス９を立上げる。In the figure, a motorcycle tire 1 has a tread portion 2, a sidewall portion 3 extending inward in the tire radial direction from both ends of the tread portion 2, and a bead portion 4 located at the inner end of the sidewall portion 3 in the tire radial direction. Additionally, the motorcycle tire 1 includes a sidewall portion 3 from the tread portion 2.
A carcass 6 is provided with a winding part 6b for winding up the bead core 5 from the inside in the axial direction of the tire to the outside in the main body part 6a extending to the bead part 4, and the carcass 6 is provided inside the tread part 2 and outside in the radial direction of the carcass 6. Belt layer 7 arranged
Furthermore, a bead apex 9 having a triangular cross section is erected on the outside of the bead core 5 in the tire radial direction and between the winding portion 6b and the main body portion 6a.
前記カーカス５は、タイヤ赤道Ｃに対して６０〜９０”
の角度で傾斜されたカーカスコードを具える１枚以上、
本実施例では１枚のカーカスプライからなり、カーカス
コードはナイロン、レーヨン、ポリエステル、芳香族ポ
リアミド等の有機繊維コードが用いられる。The carcass 5 has a diameter of 60 to 90" with respect to the tire equator C.
one or more pieces comprising a carcass cord inclined at an angle of
In this embodiment, it consists of one carcass ply, and the carcass cord is an organic fiber cord such as nylon, rayon, polyester, or aromatic polyamide.
本実施例ではカーカス６０巻上げ部６ｂの端部は、トレ
ッド部２のショルダ近傍にのび巻上げ部６ｂの端部は前
記ベルト層７によって覆っている。In this embodiment, the end of the winding portion 6b of the carcass 60 extends near the shoulder of the tread portion 2, and the end of the winding portion 6b is covered by the belt layer 7.
ベルト層７は、長尺の帯状プライ１０を前記カーカス６
の外側に螺旋状に巻回することにより形成される。The belt layer 7 includes a long belt-shaped ply 10 attached to the carcass 6.
It is formed by winding it spirally around the outside of the .
小巾プライ１０は、第２図に示すごとく１本又は平行に
配した複数本、本実施例では２本のへルトコード１１を
トレッドゴム１２に埋設してなり、前記ベルトコード１
１はテフロン、芳香族ポリアミド、ポリエステル等の有
機繊維コード及びスチールコードが用いられ、又その弾
性率が６００１ｇｆ ／ ｗ ”であることが好ましい
。As shown in FIG. 2, the narrow ply 10 is formed by embedding one helt cord 11 or a plurality of helt cords 11 arranged in parallel, two in this embodiment, in the tread rubber 12.
1 is an organic fiber cord such as Teflon, aromatic polyamide, or polyester, or a steel cord, and preferably has an elastic modulus of 6001 gf/w''.
前記帯状プライ１０は、ベルトコード１１の配列方向に
沿う上面１０ａ、下面１０ｂを有しかつ前記ベルトコー
ド１１．１１かつ埋設される基部１５の両側部にタイヤ
軸方向に先細となる三角形状の結合部Ｉ３．１３を有す
る偏平六角形をなす。The belt-shaped ply 10 has an upper surface 10a and a lower surface 10b along the arrangement direction of the belt cords 11, and has a triangular joint tapered in the tire axial direction on both sides of the belt cord 11.11 and the buried base 15. It forms an oblate hexagon with part I3.13.
前記結合部１３はそのゴムの硬度をＪＴＳＡｑ１度の５
５〜７５の範囲とするのが好ましく、又本実施例では、
結合部の断面形状をタイヤ軸方向を高さ方向とする二等
辺三角形状に形成される。The hardness of the rubber of the joint part 13 is JTSAq 1 degree 5.
It is preferably in the range of 5 to 75, and in this example,
The cross-sectional shape of the joint portion is formed into an isosceles triangular shape with the height direction being in the tire axial direction.
なお結合部工３は基部１５と一体に成形してもよく、又
結合部１３を単独で成形のうえ加硫時に基部１５と結合
してもよい。Note that the joint part work 3 may be molded integrally with the base part 15, or the joint part 13 may be molded independently and then joined to the base part 15 during vulcanization.
前記ベルト層７を形成するベルトプライは、下記手順に
より成形される。The belt ply forming the belt layer 7 is formed by the following procedure.
（１１外周面をベルト層の反りと同一の凸曲面に形成さ
れた回転するプロファルトラムＦの周面に、前記構成の
帯状プライ１０の始端部１０３を巻付ける。巻付けに際
しては、始端部１０Ｓはタイヤ赤道面に平行する方向に
プロファルトラムＦに近接し、従って始端部１０Ｓにあ
っては、帯状プライ１０は、先細状の結合部１３を有す
るため側縁がドラム面に乗り上げることなく第３図ｔａ
＋に示す如くドラム面に沿って着座することが出来る。(11) The starting end 103 of the belt-shaped ply 10 having the above configuration is wound around the circumferential surface of the rotating profalt tram F whose outer circumferential surface is formed into a convex curved surface that is the same as the warpage of the belt layer. 10S is close to the profile tram F in the direction parallel to the tire equatorial plane, and therefore, at the starting end 10S, the strip ply 10 has a tapered joint 13, so that the side edge does not ride on the drum surface. Figure 3 ta
It can be seated along the drum surface as shown in +.
（２） プロファルトラムＦの回転とともに、帯状プ
ライエ０は螺旋図しつつ逐次プロファルトラムＦに巻付
けらオしるのであるが、該ドラムＦが１回転することに
よって、前記始端部１０Ｓの内向きの結合部１３Ａと帯
状プライ１０の後続部１０Ｔの外向きの結合部１３Ｂと
が互いに重なり合う。なお両結合部１３Ａ、１３Ｂの重
なり合う際に、第３図山）−二示す如く該結合部１３Ａ
、１３Ｂが変形することにより互いに密着でき、従って
帯状プライ１０の側部の間に空隙が生しることがない。(2) As the prophalt ram F rotates, the band-shaped pliers 0 are wound around the profalt ram F in a spiral manner, and as the drum F rotates once, the starting end 10S The inward connecting portion 13A and the outward connecting portion 13B of the trailing portion 10T of the strip ply 10 overlap each other. Note that when the two joint parts 13A and 13B overlap, the joint part 13A is overlapped with the joint part 13A as shown in Fig.
, 13B can be brought into close contact with each other by deforming, so that no gap is created between the sides of the band-shaped ply 10.
（３）前記した手法にて帯状プライ１０を順次プロファ
ルトラムＦ上で螺旋巻することにより、第４図に示す如
くヘルド層７の曲率半径に略等しい膨らみを有するベル
トプライ７ａが形成できがっそのベルトプライ７ａを加
硫する事により、螺旋状に巻回された帯状プライ１０は
前記結合部１３Ａ、１３Ｂが互いに粘着し一体のものと
して形成される。(3) By sequentially spirally winding the belt-shaped ply 10 on the profile tram F using the method described above, the belt ply 7a having a bulge approximately equal to the radius of curvature of the heald layer 7 can be formed as shown in FIG. By vulcanizing the belt ply 7a, the spirally wound belt-shaped ply 10 is formed into an integral piece with the joint portions 13A and 13B sticking to each other.
（４） このようにして形成されたベルトプライ７ａ
をタイヤ成形金型にカーカスの外側に位置させ装填する
とともに、タイヤ軸中心から周方向に向がって空気圧等
によって押圧することにより生タイヤが形成され、かつ
その生タイヤを加硫処理することによって本願構成の自
動二輪車用タイヤ１を形成しうる。(4) Belt ply 7a formed in this way
A green tire is formed by placing the green tire in a tire molding mold outside the carcass and pressing it circumferentially from the center of the tire axis using air pressure, and then vulcanizing the green tire. Thus, the motorcycle tire 1 having the structure of the present invention can be formed.
第５．６図に帯状プライ１０の他の例を示す。Another example of the strip-shaped ply 10 is shown in FIG. 5.6.
第５図に示すものにあっては、１本のベルトコード１１
をトッピングゴム１２の断面形状を菱形、従って１対の
先細状の結合部１３．１３のみによって形成している０
本実施例では帯状プライ２０を中挟に形成でき、従って
ベルトコードの傾きをタイヤ赤道に近づけうるため直進
性能を一層高めうる。In the case shown in FIG. 5, one belt cord 11
The cross-sectional shape of the topping rubber 12 is rhombic, and is therefore formed only by a pair of tapered joints 13 and 13.
In this embodiment, the belt-like ply 20 can be formed in the middle, and therefore the inclination of the belt cord can be brought closer to the tire equator, so that the straight running performance can be further improved.
又第６図に示す帯状プライ２１は、トッピングゴム１２
の断面形状を台形状としており、従って結合部１３は両
側部ともに底辺が基部１５の一方の面から延設される直
角三角形状をなす。Further, the belt-shaped ply 21 shown in FIG.
The cross-sectional shape of the connecting portion 13 is trapezoidal, so that the connecting portion 13 has a right triangular shape with the base extending from one surface of the base portion 15 on both sides.
本例においては、第７図に示す如く、第１の帯状プライ
２１Ａをその長辺側を内向きにかつ間隙Ｇを有してプコ
ファルドラムＦに螺旋巻きするとともに、第２の帯状プ
ライ２１Ｂを、第１の帯状プライ２１Ａとは逆にその長
辺側を外に向けて前記間隙Ｇに嵌入レブロファルドラム
に螺旋巻キスる。In this example, as shown in FIG. 7, the first strip ply 21A is spirally wound around the Pukofal drum F with its long side facing inward and with a gap G, and the second strip ply 21B is inserted into the gap G with its long side facing outward, contrary to the first belt-shaped ply 21A, and is spirally wound around the Rebrofal drum.
従ってベルト層７は第１、第２の帯状プライ２１Ａ、２
１Ｂによる２重螺旋巻きによって形成され、又第１、第
２の帯状プライ２１Ａ、２１Ｂの各結合部１３Ａ、１３
Ｂは重なり合いかつ密接し、かつ粘着することにより、
中央部が膨らむ広巾帯状に形成される。Therefore, the belt layer 7 includes the first and second belt-shaped plies 21A, 2
1B, and each joint portion 13A, 13 of the first and second band-shaped plies 21A, 21B is formed by double spiral winding.
B overlaps, is close together, and adheres, so that
It is formed into a wide band shape with a bulging center.
なお第１、第２の帯状プライ２１Ａ、２１Ｂは同一形状
のものであってもよく、又帯状プライの巾寸度又はベル
トコードの本数を違えるなど両者の構成が異なるもので
あってもよい。Note that the first and second belt-shaped plies 21A and 21B may have the same shape, or may have different configurations, such as by changing the width of the belt-shaped ply or the number of belt cords.
このように本発明は種々なｇ＊のものに変形できる。In this way, the present invention can be modified to various g* types.
叙上の如く本発明の自動二輪車用タイヤは、ベルト層を
ベルトコードをトッピングゴムに埋設した帯状プライを
螺旋状にＳ回することにより形成されるとともに、帯状
プライは、その両側部に隣り合う帯状プライの側部と重
なり互いに粘蓋する先細状の結合部を配置しているため
、曲率半径の小さいトレッド半径を有するタイヤであっ
ても、帯状プライをベルト層の全域に亘って均ｆに形成
でき、高速直進性を高めうるのみならずバンク角を有し
て高速旋回する場合であっても、トレッドショルダ部の
剛性が確保でき旋回性能を高めうる。As described above, in the motorcycle tire of the present invention, the belt layer is formed by spirally winding a belt-shaped ply in which a belt cord is embedded in topping rubber. Since tapered joints are arranged that overlap the sides of the belt ply and overlap with each other, even if the tire has a tread radius with a small radius of curvature, the belt ply can be spread evenly over the entire belt layer. This not only improves high-speed straight running performance, but also ensures the rigidity of the tread shoulder portion even when turning at high speed with a bank angle, thereby improving turning performance.
又帯状プライの巻付は起点 終点において接する帯状プ
ライが互いに結合しているため、従来発生しがちであっ
た巻付は起点、終点における帯状プライの弛みがなくト
レッド部の耐久性を向上することが出来る。In addition, since the belt-shaped plies that touch each other at the starting and ending points are bonded to each other, the wrapping of the belt-shaped ply, which tends to occur in the past, does not loosen at the starting and ending points, improving the durability of the tread part. I can do it.
第１図は本発明の一実施例を示す断面図、第２図はその
帯状プライを示す斜視図、第３図ｆａｌ、（ｂ）は帯状
プライの巻付けを示す断面図、第４図は帯状プライを巻
付けた状態を示す断面図、第５．６図は帯状プライの他
の例を示す、第７図はその巻付けの他の例を示す断面図
、第８図は従来技術を示す斜視図、第９図はその巻付け
た状態を示す断面図である。
トレッド部、 ３・−・サイドウオール部、・〜ビー
ド部、 ５・−ビードコア、
カーカス、 ７−ベルト層、
０−・・帯状プライ、 １１−・−ベルトコード、２
−）−ッピングゴム、 １３−・−結合部。Fig. 1 is a sectional view showing one embodiment of the present invention, Fig. 2 is a perspective view showing the band-shaped ply, Fig. 3 is a sectional view showing winding of the band-shaped ply, and Fig. 4 is a sectional view showing the winding of the band-shaped ply. 5.6 is a sectional view showing another example of the band-shaped ply, FIG. 7 is a sectional view showing another example of the wrapping, and FIG. 8 is a sectional view showing the state in which the band-shaped ply is wound. The perspective view shown in FIG. 9 is a sectional view showing the wound state. Tread portion, 3.--Sidewall portion, ... Bead portion, 5.--Bead core, Carcass, 7--Belt layer, 0--Strip ply, 11--Belt cord, 2
-)-Rubber, 13-.-Joining part.
Claims (1)
ビードコアの周りを折返すカーカスと、該カーカスの外
側かつトレッド部の内方に配されるベルト層とを具え、
前記ベルト層は、一本以上のベルトコードをトレッドゴ
ムに埋設した小巾しかも一本以上の帯状プライを螺旋状
に巻回することにより形成されるとともに、前記帯状プ
ライは両側部に、該帯状プライが巻回されることにより
隣り合う帯状プライの側部と重なり互いに粘着するタイ
ヤ軸方向に先細状の結合部を配置してなる自動二輪車用
タイヤ。1. A carcass that passes from the tread portion through the sidewall portion and folds around the bead core of the bead portion, and a belt layer disposed outside the carcass and inside the tread portion,
The belt layer is formed by spirally winding one or more belt cords embedded in the tread rubber and one or more belt-shaped plies. A motorcycle tire in which a tapered joint part is arranged in the tire axial direction so that the ply is wound so that the side parts of adjacent band-shaped plies overlap and adhere to each other.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109349A JPH0478603A (en) | 1990-04-24 | 1990-04-24 | Tire for motorcycle |
| DE69110954T DE69110954T2 (en) | 1990-04-18 | 1991-04-18 | Belted pneumatic tires for motorcycles and manufacturing methods. |
| EP91303488A EP0453294B1 (en) | 1990-04-18 | 1991-04-18 | Belted radial tyre for motorcycle and belt making method |
| US08/122,171 US5379818A (en) | 1990-04-18 | 1993-09-17 | Belted radial tire for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109349A JPH0478603A (en) | 1990-04-24 | 1990-04-24 | Tire for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0478603A true JPH0478603A (en) | 1992-03-12 |
Family
ID=14507976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2109349A Pending JPH0478603A (en) | 1990-04-18 | 1990-04-24 | Tire for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0478603A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132822A (en) * | 1994-11-09 | 1996-05-28 | Bridgestone Corp | Pneumatic tire |
| JPH0966707A (en) * | 1995-08-30 | 1997-03-11 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2002205512A (en) * | 2001-01-11 | 2002-07-23 | Toyo Tire & Rubber Co Ltd | Tire and tire manufacturing method |
| JP2003251709A (en) * | 2002-03-06 | 2003-09-09 | Bridgestone Corp | Method for manufacturing rubber sheet |
| JP2003260906A (en) * | 2002-03-07 | 2003-09-16 | Bridgestone Corp | Pneumatic radial tire and its manufacturing method |
| WO2008065832A1 (en) | 2006-11-30 | 2008-06-05 | The Yokohama Rubber Co., Ltd. | Method of producing pneumatic tire |
| JP2010208090A (en) * | 2009-03-09 | 2010-09-24 | Toyo Tire & Rubber Co Ltd | Method for producing ply member, strip-shaped ply, and pneumatic tire |
| WO2018074196A1 (en) * | 2016-10-18 | 2018-04-26 | 株式会社ブリヂストン | Tire |
| WO2018207617A1 (en) * | 2017-05-10 | 2018-11-15 | 株式会社ブリヂストン | Pneumatic tire |
| JP2018188069A (en) * | 2017-05-10 | 2018-11-29 | 株式会社ブリヂストン | Pneumatic tire |
| JP2018197072A (en) * | 2017-05-24 | 2018-12-13 | 株式会社ブリヂストン | Pneumatic tire |
| CN109843603A (en) * | 2016-10-18 | 2019-06-04 | 株式会社普利司通 | Tire |
| WO2019244808A1 (en) * | 2018-06-20 | 2019-12-26 | 株式会社ブリヂストン | Tire |
| CN111448076A (en) * | 2017-12-08 | 2020-07-24 | 株式会社普利司通 | Tyre for vehicle wheels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5155505A (en) * | 1974-09-17 | 1976-05-15 | Bekaert Sa Nv | |
| JPS6185203A (en) * | 1984-10-02 | 1986-04-30 | Bridgestone Corp | Pneumatic radial tire for motorcycle |
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1990
- 1990-04-24 JP JP2109349A patent/JPH0478603A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5155505A (en) * | 1974-09-17 | 1976-05-15 | Bekaert Sa Nv | |
| JPS6185203A (en) * | 1984-10-02 | 1986-04-30 | Bridgestone Corp | Pneumatic radial tire for motorcycle |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132822A (en) * | 1994-11-09 | 1996-05-28 | Bridgestone Corp | Pneumatic tire |
| JPH0966707A (en) * | 1995-08-30 | 1997-03-11 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2002205512A (en) * | 2001-01-11 | 2002-07-23 | Toyo Tire & Rubber Co Ltd | Tire and tire manufacturing method |
| JP2003251709A (en) * | 2002-03-06 | 2003-09-09 | Bridgestone Corp | Method for manufacturing rubber sheet |
| JP2003260906A (en) * | 2002-03-07 | 2003-09-16 | Bridgestone Corp | Pneumatic radial tire and its manufacturing method |
| WO2008065832A1 (en) | 2006-11-30 | 2008-06-05 | The Yokohama Rubber Co., Ltd. | Method of producing pneumatic tire |
| JPWO2008065832A1 (en) * | 2006-11-30 | 2010-03-04 | 横浜ゴム株式会社 | Pneumatic tire manufacturing method |
| JP5040922B2 (en) * | 2006-11-30 | 2012-10-03 | 横浜ゴム株式会社 | Pneumatic tire manufacturing method |
| JP2010208090A (en) * | 2009-03-09 | 2010-09-24 | Toyo Tire & Rubber Co Ltd | Method for producing ply member, strip-shaped ply, and pneumatic tire |
| EP3530486A4 (en) * | 2016-10-18 | 2019-08-28 | Bridgestone Corporation | Tire |
| CN109843603A (en) * | 2016-10-18 | 2019-06-04 | 株式会社普利司通 | Tire |
| CN109843602A (en) * | 2016-10-18 | 2019-06-04 | 株式会社普利司通 | Tire |
| WO2018074196A1 (en) * | 2016-10-18 | 2018-04-26 | 株式会社ブリヂストン | Tire |
| WO2018207617A1 (en) * | 2017-05-10 | 2018-11-15 | 株式会社ブリヂストン | Pneumatic tire |
| JP2018188069A (en) * | 2017-05-10 | 2018-11-29 | 株式会社ブリヂストン | Pneumatic tire |
| JP2018197072A (en) * | 2017-05-24 | 2018-12-13 | 株式会社ブリヂストン | Pneumatic tire |
| CN111448076A (en) * | 2017-12-08 | 2020-07-24 | 株式会社普利司通 | Tyre for vehicle wheels |
| WO2019244808A1 (en) * | 2018-06-20 | 2019-12-26 | 株式会社ブリヂストン | Tire |
| JP2019217927A (en) * | 2018-06-20 | 2019-12-26 | 株式会社ブリヂストン | tire |
| EP3812172A4 (en) * | 2018-06-20 | 2022-06-08 | Bridgestone Corporation | Tire |
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