JPS63242702A - Pattern of pneumatic radial tire for passenger car - Google Patents
Pattern of pneumatic radial tire for passenger carInfo
- Publication number
- JPS63242702A JPS63242702A JP62076140A JP7614087A JPS63242702A JP S63242702 A JPS63242702 A JP S63242702A JP 62076140 A JP62076140 A JP 62076140A JP 7614087 A JP7614087 A JP 7614087A JP S63242702 A JPS63242702 A JP S63242702A
- Authority
- JP
- Japan
- Prior art keywords
- grooves
- circumferential
- tire
- pattern
- circumferential direction
- 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
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013112 stability test Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
木光引は、特に高速性使に供される空気入りラジアルタ
イヤのパターンノイズ低減と、ウェッ１〜性能向上を両
立するトレッドパターンの改良に関するものである。Detailed Description of the Invention (Field of Industrial Application) Komitsuhiki relates to improvements in the tread pattern of pneumatic radial tires, which are used especially for high-speed use, to reduce pattern noise and improve wet performance. It is something.
（従来の技術）
一般に高性能タイヤのパターンは、ウェット性能、操安
性能を重視し、実質上周方向にのびる複数の周方向溝と
、トレッド端からこれらの周方向溝を横切ってトレッド
他端までのびる横ｐＨＴｙＩによりブロック列を画成し
たパターンより成る。これらの構成のパターンには、近
年タイヤ要求性源としてクローズアップされている低騒
音化を図る為に、゛前記横断溝に工夫をし、横断溝をタ
イヤ周方向に対して小さい角度で設定したり、横１ｆｌ
ｒ溝各ブロツクＡで周方向に位相を持たせて設置したも
の等が提案されている。(Prior art) Generally, the pattern of a high-performance tire focuses on wet performance and handling performance, and includes a plurality of circumferential grooves that extend substantially in the circumferential direction, and a pattern that extends from the tread edge across these circumferential grooves to the other end of the tread. It consists of a pattern in which block rows are defined by horizontal pHTyI extending up to 100 cm. In order to reduce noise, which has been attracting attention as a source of tire performance in recent years, these configuration patterns include: ``The above-mentioned cross grooves are devised, and the cross grooves are set at a small angle with respect to the tire circumferential direction.'' Tari, horizontal 1fl
It has been proposed that the r-grooves are installed in each block A in a phased manner in the circumferential direction.
（発明か解決しようとする問題点）
従来、タイヤの位相差を設けた横断溝を配ｔにしても、
騒音に関してはある程度の改良効果はみとめられるか、
充分とは言いかたい、又、横断溝のタイヤ周方向に対す
る傾斜角度を小さくすることは騒音改良、及びタイヤ中
心域のウェット排水性には改良効果を有するが、ブロッ
ク剛性の部分的な不均一による偏！ｌＪ８性、タイヤ両
側域のウェット排水性、限界付近の操安性等に問題かあ
る。(Problem to be solved by the invention) Conventionally, even if the transverse grooves of the tire were arranged with a phase difference,
Is there any improvement in noise to some extent?
Although it is difficult to say that this is sufficient, and reducing the angle of inclination of the transverse grooves relative to the tire circumferential direction has the effect of improving noise and improving wet drainage in the tire center area, it may result in partial non-uniformity of block rigidity. Biased by! There are problems with lJ8 performance, wet drainage on both sides of the tire, and maneuverability near the limit.
従って本発明は高性能タイヤの操安性能、偏摩耗性を犠
牲にすることなく、この種のタイヤのウェット性能、騒
音性悌を改良するトレッドパターンを提供するものであ
る。Therefore, the present invention provides a tread pattern that improves the wet performance and noise characteristics of this type of tire without sacrificing the handling performance and uneven wear characteristics of a high-performance tire.
（問題点を解決するための手段）
本発明者等が種々検討した結果、この種のタイヤのウェ
ット性情、さらにパターン騒音の砥誠に関しては、トレ
ッドの中央区域と、Ｐ？側区域で・ 作用が異なり、そ
れぞれの最適な構成があることを見出したのである。(Means for Solving the Problems) As a result of various studies conducted by the inventors of the present invention, it has been found that the wet characteristics of this type of tire, as well as the abrasion of pattern noise, are determined by the central area of the tread and the P? They discovered that the side areas have different effects and that each has its own optimal configuration.
本発明の具体的な構成は次のとおりである。The specific configuration of the present invention is as follows.
タイヤ周方向に対し、実質上９０＠力向にのびるカーカ
ス層を有し、該カーカス層のクラウン部にベルト層及び
トレッド部を備え、該トレッ）・部は中央区域と両側区
域より形成される空気入りラジアルタイヤにおいて、前
記中央区域はｌ−レ・ンド巾の６０〜８０％の範囲にあ
り、該区域のタイヤ中心区域に実質上周方向にのびる少
なくとも１対の周方向主溝と周方向副溝により画成され
、該周方向溝と横断溝により画成された＊ａのブロック
列を有し、該横１！７Ｆ溝はタイヤ周方向に対し３５°
〜５５″の範囲にあり、内側区域とは１対の周方向溝に
より区画され、前記両側区域は、タイヤ周方向に対し８
０〜１００°の範囲の角度を持つ横Ｉｆｒｙｔにより画
成された１対のブロック列を有することを特徴とするラ
ジアルタイヤである。The tire has a carcass layer extending substantially 90 degrees in the force direction with respect to the circumferential direction of the tire, and the crown portion of the carcass layer is provided with a belt layer and a tread portion, and the tread portion is formed by a central region and both side regions. In a pneumatic radial tire, the central region is in the range of 60 to 80% of the l-lend width, and includes at least one pair of circumferential main grooves extending substantially circumferentially in the tire center region of the region; It has a block row of *a defined by the sub groove, the circumferential groove and the transverse groove, and the horizontal 1!7F groove is at an angle of 35° to the tire circumferential direction.
~55'', and is separated from the inner area by a pair of circumferential grooves, and the both side areas are 8 in the circumferential direction of the tire.
A radial tire characterized by having a pair of block rows defined by a lateral Ifryt having an angle in the range of 0 to 100 degrees.
（作用）
１、トレッド中央区域をトレッド巾の６０〜８０％の範
囲にする。(Function) 1. Make the tread central area 60 to 80% of the tread width.
（１）タイヤ中央区域に、実質上周方向にのびる少なく
とも１対の周方向主溝（好ましくはトレ・ソト巾の４〜
７％からなる主溝）及び周方向副溝（好ましくは主溝巾
の２０〜４０％からなる副溝）を備える。之は、高速時
の排水性には、負荷転動時に接地圧の高いタイヤ中央区
域に巾広の周方向主溝はｌｉ’ｆｆな役割りを果し、之
により配水する。さらに良好な接地性を得る為には周方
向副溝は必要だか、必要以上に溝巾が広いとタイヤ騒音
に悪影響を及ぼすのである。(1) At least one pair of circumferential main grooves extending substantially circumferentially in the central area of the tire (preferably 4 to
7% of the width of the main groove) and a circumferential minor groove (preferably a minor groove of 20 to 40% of the width of the main groove). In terms of drainage performance at high speeds, the wide circumferential main groove in the central area of the tire, where ground pressure is high during load rolling, plays a vital role, thereby distributing water. Furthermore, circumferential minor grooves are necessary to obtain better ground contact, and if the groove width is wider than necessary, it will have a negative effect on tire noise.
（２）タイヤ中央区域を横切る横断溝は、周方向に対す
る角度を３５〜５５″に設定したのは、横断溝を上記に
設定することにより、タイヤ騒音低減と、ウェット排水
性に効果があるのである。(2) The transverse groove that crosses the center area of the tire is set at an angle of 35 to 55'' with respect to the circumferential direction because setting the transverse groove as above is effective in reducing tire noise and improving wet drainage. be.
２、トレッド両側区域は
（１）タイヤ両側区域を横切る横断溝は、周方向に対す
る角度を８０°〜１００°に設定する。之はタイヤ騒音
に関して、両側区域の接地形状との関係から上記角度に
横断溝を設定することにより騒ａを低減できる。2. Tread side areas: (1) The transverse grooves that cross the tire side areas are set at an angle of 80° to 100° with respect to the circumferential direction. Regarding tire noise, noise a can be reduced by setting the transverse grooves at the above-mentioned angle in relation to the ground contact shape of both side areas.
更にウェット排水性に関しては、短詩間、短距離で水を
排水する為に上記角度に横断溝を設定することが有効で
ある。Furthermore, regarding wet drainage, it is effective to set the transverse groove at the above angle in order to drain water over short distances.
３、トレッド中央区域と両側区域は周方向溝によって区
画する。3. The central region and both side regions of the tread are defined by circumferential grooves.
之は中央区域と両側区域それぞれの横断溝は角度か大き
く異なる為周方向溝によって区画する必要かあるのであ
る。This is because the angles of the transverse grooves in the central area and on both sides are significantly different, so it is necessary to divide them by circumferential grooves.
（実施例） 実施例により詳細に説明する。(Example) This will be explained in detail with reference to examples.
タイヤサイズ： １９５／６５Ｒ１４
ｇＳ１図は本発明の実施例を示すトレッドパターンの周
方向一部展開平面図である。トレッド巾Ｔｗ （１５０
ｉｎ＋ ）を中央区域丁ａ（巾Ｔａは１０：１ｍｍ ）
と両側区域Ｔｓから構成し、中央区域Ｔａには１対の広
巾周方向主溝ｌ（巾８１）と１対の狭山周方向副溝２（
巾２１１ｍ）を備え、中央区域Ｔａと両側区域Ｔｓは周
方向溝３（巾３ｍｍ）にて区画されている。・ン１央区
ＭＬＴａにおける横！Ｉｉ溝４は広巾周方向主溝１から
周方向溝３まで連続してのび、その周方向に劇する角度
０は４５°である。Tire size: 195/65R14 gS1 is a partially developed plan view in the circumferential direction of a tread pattern showing an embodiment of the present invention. Tread width Tw (150
in+) in the central area (width Ta is 10:1mm)
and both side areas Ts, and the central area Ta has a pair of wide circumferential main grooves l (width 81) and a pair of narrow circumferential minor grooves 2 (width 81).
The center area Ta and both side areas Ts are separated by a circumferential groove 3 (width 3 mm).・Horizontal in N1 O-ku MLTa! The Ii groove 4 extends continuously from the wide circumferential main groove 1 to the circumferential groove 3, and its angle 0 in the circumferential direction is 45°.
１−ｑ何区＠Ｔｓにおける横断溝５は周方向ｉ、■、３
からトレッド端まで連続してのび、その周方向に対する
角度φは９０°である。The transverse groove 5 in 1-q section @Ts is in the circumferential direction i, ■, 3
It extends continuously from the tread end to the tread end, and its angle φ with respect to the circumferential direction is 90°.
第２図は、第１図実施例パターンを線対称としてパター
ンに方向性を持たせたものでありウェット性使等にさら
に効果かあった。FIG. 2 is a pattern in which the pattern of the embodiment shown in FIG. 1 is line-symmetrical to give directionality to the pattern, which is even more effective for wet sexual intercourse.
第３図は、第１図実施例パターンの広【１１周方向主溝
ｌと狭巾周方向溝２のタイヤ巾方向位ｌ関係を逆にした
もので、本発明の効果を損なうことなく同様の効果があ
る。FIG. 3 shows a pattern in which the tire width direction position l of the wide circumferential main groove 1 and the narrow circumferential groove 2 is reversed in the pattern of the embodiment shown in FIG. There is an effect.
第１図においてタイヤ中央寄りに広１０周方向主Ｊ１？
：設けたのは、より大きなウェット排水性効果を得る為
である。In Figure 1, the main J1 in the circumferential direction is 10 wide towards the center of the tire?
: It was provided to obtain a greater wet drainage effect.
（発明の効果） 本発明の効果は下表の通りＣある。(Effect of the invention) The effects of the present invention are C as shown in the table below.
指数大か良
本５Ｍ、明タイヤは従来タイヤ対比、ドライ、ウェット
操安性能、パターンノイズは５〜１５％良好である。The 5M Ming Tire, which has a large index, is 5 to 15% better in terms of dry and wet handling performance and pattern noise than conventional tires.
従来タイヤか第１図に示した本発明実施例と異なる部分
は、両側区域丁ｓのみであり、横断溝５のタイヤ周方向
となす角φが４の角０と同一であり、かつ逆に折り曲げ
たもの（θ＝４５′″、φ＝−４５°）（４か右下りの
ａ断溝に対し８５は左上りとした）てあり、他は全て回
−である。The only difference between the conventional tire and the embodiment of the present invention shown in FIG. The grooves are bent (θ=45''', φ=-45°) (85 is upward to the left, whereas 4 is downward to the right), and all others are bent.
試験方法
・トライ操安テスト
タイヤ内圧２．０ｋｇ／ｃ鳳２１乗員１名にてサーキッ
トドライ路面の走行におけるフィーリング評価
・ウェット操安テスト
上記と同様にして路面は水深５■のＷＥＴ路におけるフ
ィーリング評価
・パターンノイズ
上記と同様にして、速度４０，６０，８０，１０１１に
鵬／ｈにおける惰行時における計器測定及びフィーリン
ク評価Test method - Trial steering stability test - Tire internal pressure 2.0 kg/c Otori 21 - Feeling evaluation when driving on a circuit dry road surface with one passenger - Wet steering stability test - Similar to the above, the road surface was tested on a wet road with a water depth of 5 cm. Ring evaluation/pattern noise In the same manner as above, instrument measurements and feel link evaluations were made during coasting at speeds of 40, 60, 80, and 1011/h.
第１図、第２図、第３図は本発明の乗用車用空気入りラ
ジアルタイヤの周方向一部展開モ面図である。FIG. 1, FIG. 2, and FIG. 3 are partially exploded views in the circumferential direction of a pneumatic radial tire for a passenger car according to the present invention.
Claims (1)
ス層を有し、該カーカス層のクラウン部にベルト層及び
トレッド部を備え、該トレッド部は中央区域と両側区域
より形成される空気入りラジアルタイヤにおいて、 前記中央区域はトレッド巾の６０〜８０％の範囲にあり
、該区域のタイヤ中心区域に実質上周方向にのびる少な
くとも１対の周方向主溝と周方向副溝により画成され、
該周方向溝と横断溝により画成された複数のブロック列
を有し、該横断溝はタイヤ周方向に対し３５°〜５５°
の範囲にあり、両側区域とは１対の周方向溝により区画
され、前記両側区域は、タイヤ周方向に対し８０〜１０
０°の範囲の角度を持つ横断溝により画成された１対の
ブロック列を有することを特徴とするラジアルタイヤ。[Scope of Claims] The tire has a carcass layer extending substantially at 90 degrees with respect to the circumferential direction, and the crown portion of the carcass layer is provided with a belt layer and a tread portion, and the tread portion extends from the central region and both side regions. In the pneumatic radial tire formed, the central region is in a range of 60 to 80% of the tread width, and at least one pair of circumferential main grooves and circumferential sub-grooves extending substantially circumferentially in the tire center region of the region. defined by a groove;
It has a plurality of block rows defined by the circumferential groove and the transverse groove, and the transverse groove is at an angle of 35° to 55° with respect to the tire circumferential direction.
The both-side areas are defined by a pair of circumferential grooves, and the both-side areas are 80 to 10 in the circumferential direction of the tire.
A radial tire characterized in that it has a pair of block rows defined by transverse grooves having an angle in the range of 0°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62076140A JPS63242702A (en) | 1987-03-31 | 1987-03-31 | Pattern of pneumatic radial tire for passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62076140A JPS63242702A (en) | 1987-03-31 | 1987-03-31 | Pattern of pneumatic radial tire for passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242702A true JPS63242702A (en) | 1988-10-07 |
Family
ID=13596677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62076140A Pending JPS63242702A (en) | 1987-03-31 | 1987-03-31 | Pattern of pneumatic radial tire for passenger car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242702A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02151507A (en) * | 1988-11-30 | 1990-06-11 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
| EP0547040A2 (en) * | 1988-11-30 | 1993-06-16 | Sumitomo Rubber Industries Limited | Pneumatic radial tyre |
-
1987
- 1987-03-31 JP JP62076140A patent/JPS63242702A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02151507A (en) * | 1988-11-30 | 1990-06-11 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
| EP0547040A2 (en) * | 1988-11-30 | 1993-06-16 | Sumitomo Rubber Industries Limited | Pneumatic radial tyre |
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