JPH03182812A - Tire for motorcycle - Google Patents
Tire for motorcycleInfo
- Publication number
- JPH03182812A JPH03182812A JP1320178A JP32017889A JPH03182812A JP H03182812 A JPH03182812 A JP H03182812A JP 1320178 A JP1320178 A JP 1320178A JP 32017889 A JP32017889 A JP 32017889A JP H03182812 A JPH03182812 A JP H03182812A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- parts
- tread
- ground contact
- cornering
- 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
- 239000011324 bead Substances 0.000 claims abstract description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/10—Tyres specially adapted for particular applications for motorcycles, scooters or the like
Landscapes
- 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、自動二輪車用タイヤに関し、特にコーナリン
グ走行時等におけるタイヤの接地状態を容易に判断でき
るとともに、コーナリングフォースとキャンバ−スラス
トとを改善した二輪車用タイヤに関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to tires for motorcycles, and is capable of easily determining the ground contact state of the tire especially during cornering, and improving cornering force and camber thrust. Regarding motorcycle tires.
〔従来の技術及び発明が解決しようとする課題〕自動二
輪車は直進走行時においては路面に対してほぼ垂直の状
態で走行するが、コーナリング時においては路面に傾斜
した状態で走行する。[Prior Art and Problems to be Solved by the Invention] When a motorcycle is traveling straight, it travels almost perpendicular to the road surface, but when cornering, it travels at an angle to the road surface.
そしてその傾斜角度はコーナリング時の曲率半径が小さ
い程、速度が早い程、大きくなるが、走行条件により種
々変化することとなる。そしてコーナリング時のこの自
動二輪車の車体の傾斜の程度を知ることは、タイヤの能
力の限界まで走行を安全に試みるために、更に車体の改
造の目安や運転者の技量に応じた車体の選定の目安のた
めには好ましく、さらに必要なことは、比較的自由な旋
回をうるために、コーナーリングフォース、キャンバ−
スラスト自体を改善することである。The angle of inclination increases as the radius of curvature during cornering becomes smaller and as the speed increases, but it varies depending on the driving conditions. Knowing the degree of inclination of the motorcycle's body during cornering is useful in order to safely try to ride to the limit of the tire's capacity, and also to guide the modification of the body and to select a body according to the rider's skill. It is preferable as a guide, but what is also necessary is cornering force and camber in order to obtain relatively free turning.
The goal is to improve the thrust itself.
なお、コーナーリング走行時におけるタイヤの路面との
接地域と非接地域の境界を知るべく、例えば実公昭６４
−２８０１のように、トレッド部のショルダ一部近くに
表示記号を設けその摩耗状況により、タイヤの接地状態
を把握する方法が提案されている。しかしながらこの提
案は、コーナリング時のタイヤの傾斜程度を知るにとど
まり、タイヤの傾斜程度が限界にきたときの走行安全性
自体を高めることを意図したものではない。In addition, in order to know the boundary between the contact area of the tire with the road surface and the non-contact area during cornering, for example,
-2801, a method has been proposed in which a display symbol is provided near a part of the shoulder of the tread portion, and the ground contact state of the tire can be ascertained based on the wear state of the symbol. However, this proposal is limited to knowing the degree of tire inclination during cornering, and is not intended to improve driving safety itself when the degree of tire inclination reaches its limit.
本発明はコーナリング走行時のタイヤの傾斜程度を的確
かつ容易に把握でき、しかも傾斜が限界状態りこ達した
際、接地面積、接地圧を増大して、コーナーングフォー
スとキャンバ−トラストを維持し安全な走行を可能なら
しめる自動二輪車を提案することを目的とする。The present invention can accurately and easily determine the degree of tire inclination during cornering, and when the inclination reaches its limit, it increases the contact area and ground pressure to maintain cornering force and camber trust, resulting in safety. The aim is to propose a motorcycle that enables comfortable driving.
（課題を解決するための手段）
本発明は、トレッド部と、その両端からラジアル方向内
方に向けて延びるサイドウオール部と、該サイドウオー
ル部のラジアル方向内端部に位置するビード部とを有し
、前記トレッド部のタイヤ軸方向両側縁に、タイヤ赤道
から連なるトレッド部の輪郭曲面から外に１． Ｏｎ以
上かつ５．９ ＊＊以下の高さで突出ししかも１． Ｏ
ｖａｎ以上つ１０■以下の巾でタイヤ周方向に延在する
突起部を形成してなる自動二輪車用タイヤである。(Means for Solving the Problems) The present invention includes a tread portion, a sidewall portion extending radially inward from both ends of the tread portion, and a bead portion located at the radially inner end portion of the sidewall portion. 1. On both sides of the tread portion in the tire axial direction, outward from the contour curved surface of the tread portion extending from the tire equator. Protruding at a height of On or higher and 5.9** or lower, and 1. O
This is a motorcycle tire formed by forming a protrusion extending in the tire circumferential direction with a width of more than 10 mm and less than 10 mm.
自動二輪車用タイヤは１〜トレッドの表面両側端に突起
部が形成されているため、コーナリング走行時にタイヤ
が傾斜した場合、接地により摩耗状態が一層明瞭になる
とともに、前記突起部によりコーナリング走行時の接地
面積、接地圧が増大し、より高いコーナリングフォース
とキャンバ−スラストが得られ、安定した操縦性能が得
られる。Motorcycle tires have protrusions formed on both sides of the tread surface, so if the tire slopes during cornering, the state of wear will become clearer as it makes contact with the ground, and the protrusions will reduce the wear rate during cornering. Ground contact area and ground pressure are increased, higher cornering force and camber thrust are obtained, and stable maneuverability is achieved.
以下本発明の一実施例を図面に基づいて説明する。 An embodiment of the present invention will be described below based on the drawings.
図において本発明の自動二輪車用タイヤ１はトレッド部
２とその両端からラジアル方向内方に延びる一対のサイ
ドウオール部３と、該サイドウオール部３のラジアル方
向内端部に位置するビード部４を有している。又前記ト
レッド部２のタイヤ軸方向両側縁には、タイヤ赤道Ｃか
らトレッド部の表面を連ねるトレッドの表面輪郭曲面Ｐ
Ｌから外方に突出する突起部５が形成されている。こ
の突起部５の前記輪郭曲面Ｐ Ｌからの高さｈは１．０
１１以上かつ５． Ｏ＊＊以下しかも巾Ｗは１．０ 璽
ｘ以上１０．０１１以下の範囲である。In the figure, the motorcycle tire 1 of the present invention includes a tread portion 2, a pair of sidewall portions 3 extending radially inward from both ends of the tread portion 2, and a bead portion 4 located at the radial inner end of the sidewall portion 3. have. Further, on both edges of the tread portion 2 in the tire axial direction, there is a tread surface contour curved surface P that connects the surface of the tread portion from the tire equator C.
A protrusion 5 that protrudes outward from L is formed. The height h of this protrusion 5 from the contour curved surface P L is 1.0
11 or above and 5. O** or less, and the width W is in the range of 1.0 or more and 10.011 or less.
従来の摩耗表示のための突起、例えば実公昭６４−２８
０１は高さＱ、 ｌ ｍｎ〜Ｑ、 ５ ＊ｘで形成して
いるのに刻し、本発明はこれよりも高くすることにより
摩耗状態を一層明瞭にする。また突起部の輻Ｗは１．０
ｕ〜Ｉ Ｏ，ＯＩＩＩとするが、コーナリング時の接地
圧、接地面積を高めるためには、３ｍｍ〜１０山の範囲
がより好ましい。又突起部５は第２図に示す如くタイヤ
周方向に連続して延在してもよく、又タイヤ周方向に断
続するブロック状とすることもできる。なお継続すると
きにも、突起部５は比較的長く、途切れ量は１５ｍｍ以
下、好ましくは１０１宵さらに好ましくは５ ＊＊以下
とするのがよ＜、又トレッドパターンのパターン当たり
、少なくとも１つの突起部５を設ける。なお接地圧、接
地面積を高めるためには周方向に連続した形状が望まし
い。さらに突起部５の表面には、周方向に延びる１本又
は複数の細溝６を形成し、前記突起を複数条に分割する
ことも可能であり、この場合細溝６の深さｄは突起部５
の高さｈの半分程度とし、突起部６の剛性低下を防ぐ。Conventional projections for wear indication, e.g. Utility Model Act 64-28
01 is formed with a height Q, l mn~Q, 5*x, and the present invention makes the wear state even clearer by making it higher than this. Also, the radius W of the protrusion is 1.0
u to I O, OIII, but in order to increase ground contact pressure and ground contact area during cornering, a range of 3 mm to 10 peaks is more preferable. Further, the protrusion 5 may extend continuously in the circumferential direction of the tire as shown in FIG. 2, or may have a block shape that extends intermittently in the circumferential direction of the tire. Even when continuing, the protrusions 5 are relatively long, and the amount of discontinuity is 15 mm or less, preferably 10 mm or less, more preferably 5 mm or less, and at least one protrusion per pattern of the tread pattern. Section 5 is provided. Note that in order to increase ground contact pressure and ground contact area, a continuous shape in the circumferential direction is desirable. Furthermore, it is also possible to form one or more narrow grooves 6 extending in the circumferential direction on the surface of the protrusion 5 and divide the protrusion into a plurality of strips. In this case, the depth d of the narrow groove 6 is Part 5
The height h of the protrusion 6 is set to approximately half of the height h of the protrusion 6, thereby preventing a decrease in the rigidity of the protrusion 6.
タイヤサイズ１００／９０．−１６のタイヤについて第
１図に示す基本構造で、第１表に示す各仕様の突起を形
成した実施例、比較例のタイヤを試作し、タイヤの性能
を測定し、その結果を第１表に示している。なお図では
突起に細溝を形成したものが示されているが、実施例、
比較例ではいずれも細溝のないものを用いた。なお比較
例１は特性に優れるとはいえ、突起部５が過度に膨出し
、見映えを低下しかつコストアップとなる他、路面との
接触を不安定としがちになる。又比較例４は、従来タイ
ヤである。又キャンバ−スラスト、コーナーリングフォ
ースは６分カタイヤ試験機を用いかつ比較例４を１００
とする指数表示を行っている。数値が大なる程、優れて
おり、ともに１０５以上が好ましい範囲となる。又直進
安定性、コーナーリング安定性はドライバーのフィーリ
ング評価であり、３．０以上が好ましい範囲である。Tire size 100/90. -16 Tires with the basic structure shown in Figure 1 and with protrusions of each specification shown in Table 1 were prototyped, and the performance of the tires was measured, and the results are shown in Table 1. It is shown in Note that although the figure shows a protrusion with a thin groove formed in it, the example
In the comparative examples, those without narrow grooves were used. Although Comparative Example 1 has excellent properties, the protrusion 5 swells excessively, resulting in poor appearance and increased cost, and tends to make contact with the road surface unstable. Comparative Example 4 is a conventional tire. In addition, camber thrust and cornering force were measured using a 6-minute tire tester and comparing Comparative Example 4 with 100
It is displayed as an index. The larger the numerical value is, the better it is, and a preferable range for both is 105 or more. Further, straight-line stability and cornering stability are evaluations of driver feeling, and a preferable range is 3.0 or more.
（発明の効果）
畝上の如く、本発明の自動二輪車用タイヤは、コーナリ
ング走行時の接地状態を的確に把握できるとともに、コ
ーナリングフォース及びキャンバ−スラストを高めるこ
とができる。(Effects of the Invention) Like the ridges, the motorcycle tire of the present invention can accurately grasp the ground contact state during cornering, and can increase cornering force and camber thrust.
第１図は本発明の一実施例を示す断面図、第２図は突起
部の拡大断面図である。
２−・・トレッド部、 ３・−サイドウオール部、４
・−ビード部、 ５・−突起部。FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a protrusion. 2--Tread section, 3--Side wall section, 4
・-Bead portion, 5.-Protrusion portion.
Claims (1)
けて延びるサイドウォール部と、該サイドウォール部の
ラジアル方向内端部に位置するビード部とを有し、前記
トレッド部のタイヤ軸方向両側縁に、タイヤ赤道から連
なるトレッド部の輪郭曲面から外に１．０ｍｍ以上かつ
５．０ｍｍ以下の高さで突出ししかも１．０ｍｍ以上か
つ１０ｍｍ以下の巾でタイヤ周方向に延在する突起部を
形成してなる自動二輪車用タイヤ。1 Comprising a tread portion, a sidewall portion extending radially inward from both ends of the tread portion, and a bead portion located at the radially inner end portion of the sidewall portion, both edges of the tread portion in the tire axial direction A protrusion is formed that protrudes outward from the contour curved surface of the tread portion extending from the tire equator at a height of 1.0 mm or more and 5.0 mm or less, and extends in the tire circumferential direction with a width of 1.0 mm or more and 10 mm or less. Motorcycle tires made with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320178A JPH03182812A (en) | 1989-12-08 | 1989-12-08 | Tire for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320178A JPH03182812A (en) | 1989-12-08 | 1989-12-08 | Tire for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03182812A true JPH03182812A (en) | 1991-08-08 |
Family
ID=18118567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1320178A Pending JPH03182812A (en) | 1989-12-08 | 1989-12-08 | Tire for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03182812A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041026A (en) * | 2010-08-23 | 2012-03-01 | Bridgestone Corp | Pneumatic tire for motorcycle |
| JP2019127184A (en) * | 2018-01-25 | 2019-08-01 | 住友ゴム工業株式会社 | Tire for motorcycle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60244605A (en) * | 1984-05-17 | 1985-12-04 | Sumitomo Rubber Ind Ltd | Motorcycle tire |
-
1989
- 1989-12-08 JP JP1320178A patent/JPH03182812A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60244605A (en) * | 1984-05-17 | 1985-12-04 | Sumitomo Rubber Ind Ltd | Motorcycle tire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041026A (en) * | 2010-08-23 | 2012-03-01 | Bridgestone Corp | Pneumatic tire for motorcycle |
| JP2019127184A (en) * | 2018-01-25 | 2019-08-01 | 住友ゴム工業株式会社 | Tire for motorcycle |
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