JPH03273909A - Tire for scooter - Google Patents
Tire for scooterInfo
- Publication number
- JPH03273909A JPH03273909A JP2074599A JP7459990A JPH03273909A JP H03273909 A JPH03273909 A JP H03273909A JP 2074599 A JP2074599 A JP 2074599A JP 7459990 A JP7459990 A JP 7459990A JP H03273909 A JPH03273909 A JP H03273909A
- Authority
- JP
- Japan
- Prior art keywords
- tread
- tire
- degrees
- tire equator
- edge
- 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
- 230000002093 peripheral effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000011324 bead Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0374—Slant grooves, i.e. having an angle of about 5 to 35 degrees to the equatorial plane
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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、走行時の水はねのはね上がり高さを減少しう
るスクータ用タイヤに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a tire for a scooter that can reduce the height of water splashing during driving.
スクータ用タイヤにあっては、スリップを防ぐため、タ
イヤのクラウン部に付着する雨水を側方に飛散させるた
め、第３図に示す如くタイヤ赤道Ｃから両側のショルダ
部ｓ、ｓ部に向がって斜めにのびるトレッド溝ｂ−が設
けられることが多い。For scooter tires, in order to prevent slipping and to scatter rainwater adhering to the crown of the tire to the sides, a tire with a direction from the tire equator C to shoulder parts s and s on both sides, as shown in Figure 3, is used. A tread groove b- extending diagonally is often provided.
前記構成のトレッド溝すにあっては、クラウン部ｄに付
着した雨水をショルダ部３に移動させ、ショルダ部３か
ら斜後方に向かって飛散させるのであるが、飛水が高く
上がることによって、前輪にあっては操縦者を被水させ
、又後輪にあっては後方の視界を遮るため走行時におけ
る水はねを少なく、特にはね上がり高さが低いタイヤの
出現が要望されていた。In the tread groove having the above structure, the rainwater adhering to the crown part d is moved to the shoulder part 3 and is scattered diagonally rearward from the shoulder part 3. In the case of a vehicle, the driver is exposed to water, and in the case of the rear wheel, the rear view is obstructed, so there has been a demand for a tire that reduces the amount of water splashed during driving, and in particular has a low splash height.
発明者は、水はねの発生状態を調査しかつ飛散状態を分
析した結果、
■ トレッド溝すがショルダ部Ｓの中間位置で途切れて
おり、その途切れ部ｆにタイヤに付着した水が集合する
ことによって、該途切れ部ｆから勢いよく飛出すこと、
■ トレッド溝ｆは、下流において流入量が多く従って
流通する流量が大となるが溝巾が上流、下流側共時同寸
であるため、下流側では流れが速くなる結果、途切れ部
ｆから飛散する速度も大となる。As a result of investigating the occurrence of water splash and analyzing the scattering state, the inventor found that: ■ The tread groove is interrupted at the middle position of the shoulder portion S, and water adhering to the tire collects at the interrupted portion f. As a result, the tread groove f has a large inflow volume in the downstream region, so the flow rate is large, but the groove width is the same on both the upstream and downstream sides; As the flow becomes faster on the downstream side, the speed at which the particles are scattered from the discontinuous portion f also increases.
■ タイヤ赤道Ｃ近傍に付着した水はトレッド溝ｆに導
かれることなく直接飛散する。■ Water adhering to the vicinity of the tire equator C is not guided by the tread grooves f and is directly scattered.
等の要因があることを確認した。We confirmed that there are other factors.
本発明は、トレッド溝をタイヤ赤道上に配される中心部
と、中心部からのびトレッド端縁で開口する傾斜部とに
よって形成するとともに傾斜部に溝巾が開口端に向かっ
て拡がる拡巾部を具えることを基本として、水はねの高
さを減じ前記問題点を解決しうるスクータ用タイヤの提
供を目的としている。The present invention has a tread groove formed by a center portion disposed on the tire equator, an inclined portion extending from the center portion and opening at the tread edge, and a widened portion in the inclined portion where the groove width widens toward the opening end. The object of the present invention is to provide a scooter tire that can reduce the height of water splash and solve the above-mentioned problems.
本発明は、トレッド面に、タイヤ赤道からトレッド端縁
までのびかつタイヤ赤道に対して線対称なトレッド溝を
タイヤ赤道を挟む両側で周方向に位置ずれさせて交互に
配設したスクータ用タイヤであって、前記トレッド溝は
、タイヤ赤道上をのびかつ両端が途切れる中心部に、始
端が前記中心部に連らなるとともにタイヤ赤道に対して
２０度以上かつ３０度以下の角度で傾いて、前記タイヤ
赤道からトレッド巾（ＴＷ）の約１／６倍までの範囲で
のびるクラウン傾斜部と、該クラウン傾斜部の終端に連
続しかつタイヤ赤道に対して４０度以上かつ６０度以下
の角度でクラウン傾斜部と同じ向きに傾くとともにトレ
ッド端縁で開口するシッルダ傾斜部とからなる傾斜部を
設ける一方、該傾斜部は、シッルダ傾斜部の前記開口端
側に向かって、トレッド溝の中心線に対して溝壁が２度
以上かつ７．５度以下で傾く拡巾部を具えてなるスクー
タ用タイヤである。The present invention provides a scooter tire in which tread grooves extending from the tire equator to the tread edge and symmetrical with respect to the tire equator are alternately disposed on the tread surface at positions shifted in the circumferential direction on both sides of the tire equator. The tread groove extends on the tire equator and has both ends discontinuous at the center, and has a starting end connected to the center and is inclined at an angle of 20 degrees or more and 30 degrees or less with respect to the tire equator. A crown slope extending from the tire equator to about 1/6 times the tread width (TW), and a crown continuous to the end of the crown slope and at an angle of 40 degrees or more and 60 degrees or less with respect to the tire equator. A sloped portion is provided, which includes a shielder sloped portion that slopes in the same direction as the sloped portion and opens at the tread edge. The present invention is a scooter tire comprising a widened portion in which the groove wall is inclined at an angle of 2 degrees or more and 7.5 degrees or less.
トレッド溝は、タイヤ赤道上に両端が途切れかつ傾斜部
が連らなる中心部を有するためトレッド面のタイヤ赤道
近傍に滞留する雨水を効率よ（トレッド溝に導くことが
出来、タイヤ周速度が最も速いタイヤ赤道面に沿って飛
散する水はねを減少させることが出来る。The tread groove has a central part with both ends interrupted on the tire equator and a series of sloped parts, so rainwater that accumulates near the tire equator on the tread surface can be efficiently guided to the tread groove, and the tire circumferential speed is the highest. It is possible to reduce water splashing along the equatorial plane of fast tires.
又、傾斜部はトレッド端縁で開口するため、トレッド溝
に導かれた雨水は溝端で停滞することなく定量の雨水が
連続して放出される結果、水はね高さを低位置で安定さ
せることが出来る。In addition, since the slope opens at the tread edge, rainwater guided into the tread groove does not stagnate at the groove edge, but a constant amount of rainwater is released, resulting in a stable water splash height at a low position. I can do it.
又傾斜部にあっては、クラウン傾斜部に比べてシッルダ
傾斜部の傾斜角度を大きくかつそれぞれの傾斜角度範囲
を規制しているため、溝内の流入した水の飛出し速度を
減じることにより水はね高さを抑制することが出来る。In addition, regarding the slope part, the slope angle of the shield slope part is larger than that of the crown slope part, and the range of each slope angle is regulated. It is possible to suppress the splash height.
しかも傾斜部に２度以上かつ７度以下で開口端に向かっ
て傾く拡巾部を具えているため、溝部を遣る雨水は加速
されることがなく、従って水はね高さを減じろる。Moreover, since the inclined part has a widening part which is inclined toward the opening end at an angle of 2 degrees or more and 7 degrees or less, rainwater flowing into the groove part is not accelerated, thereby reducing the height of water splashing.
このように本願発明は前記構成が有機的に結合すること
によって水はねの高さを減じうるのである。In this way, the present invention can reduce the height of water splash by organically combining the above structures.
以下本発明の一実施例を図面に基づき説明する。 An embodiment of the present invention will be described below based on the drawings.
図において本発明のスクータ用タイヤ１は、トレッド２
にタイヤ赤道Ｃからトレッド端縁Ｅまでのびるとともに
タイヤ赤道Ｃに対して線対称なトレッド溝３をタイヤ赤
道Ｃを挟む両側で周方向に位置ずれさせて交互に配設し
ており、前記トレッド溝３は、タイヤ赤道Ｃ上に位置す
る中心部４と、中心部４に一端が連らなりかつトレッド
端縁Ｅで開口する傾斜部５とからなる。In the figure, a scooter tire 1 according to the present invention has a tread 2
Tread grooves 3 extending from the tire equator C to the tread edge E and symmetrical with respect to the tire equator C are arranged alternately on both sides of the tire equator C, with positions shifted in the circumferential direction, and the tread grooves 3 consists of a center part 4 located on the tire equator C, and an inclined part 5 which has one end connected to the center part 4 and opens at the tread edge E.
又スクータ用タイヤ１は前記トレッド面２を形成するト
レッド部１２の両端からタイヤ半径方向内方へのびるサ
イドウオール部１３．１３と、該サイドウオール部１３
の半径方向内端に位置するビード部１５．１５を有し、
各ビード部１５．１５に設けるビードコア１６．１６間
には前記サイドウオール部１３．１３、トレッド部２を
通るトロイダル状のカーカス１７が架は渡されるととも
に、本実施例ではその半径方向外側かつトレッド部１２
内にベルト層１９を配している。The scooter tire 1 also includes sidewall portions 13.13 extending inward in the tire radial direction from both ends of the tread portion 12 forming the tread surface 2;
having a bead portion 15.15 located at the radially inner end of the
A toroidal carcass 17 passing through the sidewall portion 13.13 and the tread portion 2 is passed between the bead cores 16.16 provided in each bead portion 15.15, and in this embodiment, the radially outer side and the tread Part 12
A belt layer 19 is arranged inside.
前記カーカス１７は、カーカスコードをタイヤの赤道Ｃ
に対して本実施例では３０度〜９０度の角度で配列した
いわゆるラジアル又はセミラジアル方向配列体であり、
又カーカスコードとして、ナイロン、ポリエステル、レ
ーヨン、芳香族ポリアミド等の繊維コードが採用される
。The carcass 17 has a carcass cord connected to the equator C of the tire.
On the other hand, in this embodiment, it is a so-called radial or semi-radial direction arrangement body arranged at an angle of 30 degrees to 90 degrees,
Further, as the carcass cord, fiber cords such as nylon, polyester, rayon, and aromatic polyamide are used.
前記ベルト層１９は、傾斜して配されるベルトコードを
具えるベルトプライからなり該ベルトコードはカーカス
１７と同様にナイロン、ポリエステル、レーヨン、芳香
族ポリアミド等の繊維コードが用いられる。The belt layer 19 is a belt ply having obliquely arranged belt cords, and like the carcass 17, fiber cords such as nylon, polyester, rayon, and aromatic polyamide are used for the belt cords.
トレッド溝３は前記した如く中心部４と傾斜部５とから
なる。As described above, the tread groove 3 consists of a center portion 4 and an inclined portion 5.
中心部４は、タイヤ赤道Ｃ上に配されかつ周方向の長さ
Ｇをトレッド溝３のタイヤ赤道ＣにおけるピッチＰの０
．２倍〜０．５倍の範囲としている。The center portion 4 is arranged on the tire equator C and has a circumferential length G equal to 0 of the pitch P of the tread groove 3 at the tire equator C.
．． The range is 2 times to 0.5 times.
傾斜部５は、始端６ａの中心部４に連らなりかつトレッ
ド端縁Ｅ、Ｅｒ１Ｊのタイヤ軸方向の距離であるトレッ
ド巾ＴＷの約１／６倍までの範囲でのびるクラウン傾斜
部と、該クラウン傾斜部の終端６ｂに連袂しトレッド端
縁Ｅで開口するショルダ傾斜部７とからなる。The sloped portion 5 includes a crown sloped portion that is connected to the center portion 4 of the starting end 6a and extends to approximately 1/6 times the tread width TW, which is the distance in the tire axial direction between the tread edges E and Er1J, and It consists of a shoulder slope part 7 which is continuous with the terminal end 6b of the crown slope part and opens at the tread edge E.
傾斜部５は、クラウン傾斜部６においてはタイヤ赤道Ｃ
に対して２０度以上かつ３０度以下の傾き角度αで傾斜
している。前記角度αが２０度未満ではクラウン部Ｋに
付着した雨水のトレッド溝３へ流入する流入量が減り、
水はねが大となる。The sloped portion 5 is located at the tire equator C at the crown sloped portion 6.
It is inclined at an inclination angle α of 20 degrees or more and 30 degrees or less with respect to the surface. When the angle α is less than 20 degrees, the amount of rainwater adhering to the crown portion K flowing into the tread groove 3 is reduced.
The water splash becomes large.
又３０度をこえると傾斜部５の溝壁面における反力の担
持能力に欠は直進走行性能を損ねるとともに偏摩耗が生
じ易い。If the angle exceeds 30 degrees, the groove wall surface of the inclined portion 5 lacks the ability to support the reaction force, impairing straight running performance and being prone to uneven wear.
ショルダ傾斜部７は、タイヤ赤道Ｃに対して４０度以上
かつ６０度以下の傾き角度βで傾斜している。傾き角度
βが４０度未満ではショルダ傾斜部を流れる雨水の速度
が増し、雨水のタイヤから離脱する速度も大となること
により水はね高さも大きくなる。又傾き角度αが６０度
をこえると旋回性能が低下し、偏摩耗が発生する。The shoulder inclined portion 7 is inclined with respect to the tire equator C at an inclination angle β of 40 degrees or more and 60 degrees or less. When the inclination angle β is less than 40 degrees, the speed of rainwater flowing through the shoulder slope increases, the speed at which the rainwater leaves the tire also increases, and the height of water splash increases. Moreover, if the inclination angle α exceeds 60 degrees, the turning performance deteriorates and uneven wear occurs.
又傾斜部５は、その開口端Ｆに向かってトレッド溝３の
中心線りに対して溝壁９が２度以上かつ７．５以下で傾
く拡巾部１０を具えている。Further, the inclined portion 5 includes a widened portion 10 in which the groove wall 9 is inclined at an angle of 2 degrees or more and 7.5 degrees or less with respect to the center line of the tread groove 3 toward the open end F thereof.
本実施例では、拡巾部１０はクラウン傾斜部６の始端６
ａからショルダ傾斜部７の開口端Ｆまでの傾斜部５全長
さに亘りかつ同じ角度で連続する傾斜で形成している。In this embodiment, the widened portion 10 is the starting end 6 of the crown inclined portion 6.
The slope portion 5 is formed with a continuous slope at the same angle over the entire length of the slope portion 5 from a to the opening end F of the shoulder slope portion 7.
このように傾斜部５を、開口端Ｆに向かって拡巾するこ
とにより、傾斜部５を流通する雨水の量が開口端Ｆに近
づくほど増大するのに対応できる。By widening the slope portion 5 toward the opening end F in this manner, it is possible to cope with the fact that the amount of rainwater flowing through the slope portion 5 increases as it approaches the opening end F.
側壁１０の傾斜角度Ｔが２度未満では傾斜部５の拡がり
量が傾斜部５を流通する雨水の増加量に比して少ないた
め、雨水が傾斜部５からトレッド面２に溢れ出すことと
なり、周面の切線方向に飛散することとなり、水はね高
さが高（なる、又傾斜角度ｒが７．５をこえると開口端
Ｆ近傍の傾斜部５が極度に広巾となる結果、旋回時にお
ける操縦安定性が低下する。When the inclination angle T of the side wall 10 is less than 2 degrees, the amount of expansion of the inclination part 5 is small compared to the increase in the amount of rainwater flowing through the inclination part 5, so rainwater overflows from the inclination part 5 to the tread surface 2. The water will be scattered in the tangential direction of the circumferential surface, and the height of the water splash will be high (also, if the slope angle r exceeds 7.5, the slope 5 near the opening end F will become extremely wide, so when turning Driving stability decreases.
タイヤサイズが３． ＯＯ−１０かつ第１図に示す断面
構成と、第２図に示すトレッドパターンを具えるタイヤ
（具体例）を試作するとともに、実車の後輪に装着しテ
ストロードにおいて水はねのテストを行った。テストは
環状のテストコースに水深さ２０鶴、長さが直線１６■
の水溜り部を設置するとともに、該水溜り部にテスト車
を４０ｋｍ／Ｈの速度で進入させるとともに、第３図に
示す如く後輪後方の泥よけ板の位置に設けたテスト板ｐ
に付着した水滴の最大高さ位置を測定した。Tire size is 3. We prototyped a tire (concrete example) with OO-10, the cross-sectional configuration shown in Figure 1, and the tread pattern shown in Figure 2, and conducted a water splash test on a test road by attaching it to the rear wheel of an actual vehicle. Ta. The test is a circular test course with a depth of 20 meters and a straight line of 16 inches.
At the same time, a test vehicle was entered into the puddle at a speed of 40 km/h, and a test plate p was installed at the mudguard position behind the rear wheels as shown in Figure 3.
The maximum height position of water droplets attached to the surface was measured.
テスト板ｐは下端ｄをテストタイヤｔの軸線ｌの高さに
合わせて設置するとともに、該下端ｐを基準とした水は
ね高さを測定し判定した。The test plate p was installed with its lower end d aligned with the height of the axis l of the test tire t, and the water splash height was measured and determined based on the lower end p.
なお比較のため具体例のタイヤと同サイズで第４図に示
すパターンのタイヤ（比較例）を試作し具体例のものと
併せてテストした。For comparison, a tire (comparative example) having the same size as the tire of the specific example and the pattern shown in FIG. 4 was prototyped and tested together with the tire of the specific example.
テストの結果、第３図に示す如く、比較例のものは下端
ｄを基準とした水はねの最大高さｈＯ（−点鎖線で示す
）が４０８であったのに対し、本発明に係る具体例のも
のは同じ基準位置からの水はね最大高さｈ（破線で示す
）は２０■であって、具体例のものは比較例のものに比
べて水はねの高さが著しく減少したことが確認出来た。As a result of the test, as shown in FIG. 3, the maximum height hO of water splash (indicated by a dashed line) of the comparative example was 408, based on the lower end d, whereas In the specific example, the maximum water splash height h (indicated by the broken line) from the same reference position is 20■, and the height of the water splash in the specific example is significantly reduced compared to the comparative example. I was able to confirm that I did it.
畝上の如く本発明のスクータ用タイヤは、タイヤ赤道上
をのびかつ両端が途切れる中心部と始端が中心部に連ら
なりかつトレッド端縁で開口する傾斜部とからなるトレ
ッド溝を具え、しかも傾斜部に開口端側に向かって拡が
る拡巾部を設けることを要旨としているため、雨中又は
水溜りを走行する際にあっても水はねの高さを減じ、ド
ライバーの慣れを防ぎかつ歩行者の被水を排除し環境の
改善に役立つ。Like a ridge, the scooter tire of the present invention has a tread groove consisting of a center part that extends on the tire equator and is interrupted at both ends, and an inclined part whose starting end is connected to the center part and opens at the tread edge. The idea is to provide a widening section on the slope that widens toward the opening end, which reduces the height of water splash even when driving in the rain or through puddles, prevents drivers from getting used to it, and makes walking easier. It helps to improve the environment by eliminating people from being exposed to water.
第１図は本発明の一実施例を示す断面図、第２図はその
トレッドパターンを例示する展開平面図、第３図はテス
トの一例を示す線図、第４図は従来のパターンを示す展
開平面図である。
４・・−中心部、 ５・−・傾斜部、
６−・クラウン傾斜部、 ６ａ・・・始端、６ｂ・・−
最端、 ７・・・ショルダ傾斜部、９−溝壁、 １０
−拡巾部、 Ｃ−タイヤ赤道、Ｅ−・−トレッド端縁、
Ｆ・−開口端。Fig. 1 is a cross-sectional view showing an embodiment of the present invention, Fig. 2 is a developed plan view illustrating its tread pattern, Fig. 3 is a diagram showing an example of a test, and Fig. 4 shows a conventional pattern. FIG. 4...-center, 5--slanted portion, 6--crown slanted portion, 6a...starting end, 6b...-
extreme end, 7...shoulder slope, 9-groove wall, 10
- widening part, C - tire equator, E - tread edge,
F.-Open end.
Claims (1)
びかつタイヤ赤道に対して線対称なトレッド溝をタイヤ
赤道を挟む両側で周方向に位置ずれさせて交互に配設し
たスクータ用タイヤであって、前記トレッド溝は、タイ
ヤ赤道上をのびかつ両端が途切れる中心部に、始端が前
記中心部に連らなるとともにタイヤ赤道に対して２０度
以上かつ３０度以下の角度で傾いて、前記タイヤ赤道か
らトレッド巾（ＴＷ）の約１／６倍までの範囲でのびる
クラウン傾斜部と、該クラウン傾斜部の終端に連続しか
つタイヤ赤道に対して４０度以上かつ６０度以下の角度
でクラウン傾斜部と同じ向きに傾くとともにトレッド端
縁で開口するショルダ傾斜部とからなる傾斜部を設ける
一方、該傾斜部は、ショルダ傾斜部の前記開口端側に向
かって、トレッド溝の中心線に対して溝壁が２度以上か
つ７．５度以下で傾く拡巾部を具えてなるスクータ用タ
イヤ。1. A scooter tire in which tread grooves extending from the tire equator to the tread edge and symmetrical with respect to the tire equator are alternately arranged on the tread surface at positions shifted in the circumferential direction on both sides of the tire equator, The tread groove extends above the tire equator, has a starting end connected to the center, and is inclined at an angle of 20 degrees or more and 30 degrees or less from the tire equator. A crown slope extending up to about 1/6 times the tread width (TW), and a crown slope continuing to the end of the crown slope at an angle of 40 degrees or more and 60 degrees or less with respect to the tire equator. and a shoulder slope part that is inclined in the same direction and opens at the tread edge, and the slope part extends toward the groove wall with respect to the center line of the tread groove toward the open end side of the shoulder slope part. A scooter tire comprising a widened part that tilts at an angle of 2 degrees or more and 7.5 degrees or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074599A JPH03273909A (en) | 1990-03-23 | 1990-03-23 | Tire for scooter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074599A JPH03273909A (en) | 1990-03-23 | 1990-03-23 | Tire for scooter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03273909A true JPH03273909A (en) | 1991-12-05 |
Family
ID=13551779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2074599A Pending JPH03273909A (en) | 1990-03-23 | 1990-03-23 | Tire for scooter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03273909A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6220320B1 (en) * | 1997-02-27 | 2001-04-24 | Bridgestone Corporation | Pneumatic motorcycle tire |
| JP2007045367A (en) * | 2005-08-12 | 2007-02-22 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| US20100126645A1 (en) * | 2007-04-13 | 2010-05-27 | Samuel Santana Barboza | Motorcycle tires and method to improve performance and wear resistance of motorcycle tires |
| US20100282390A1 (en) * | 2007-11-06 | 2010-11-11 | Mario Mariani | Motorcycle tyre |
| JP2011189805A (en) * | 2010-03-12 | 2011-09-29 | Bridgestone Corp | Pneumatic tire for motorcycle |
| US11279180B2 (en) * | 2018-01-31 | 2022-03-22 | Sumitomo Rubber Industries, Ltd. | Tire for a motorcycle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0228006A (en) * | 1988-07-14 | 1990-01-30 | Yamaha Motor Co Ltd | Pneumatic tire for motorcycle |
-
1990
- 1990-03-23 JP JP2074599A patent/JPH03273909A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0228006A (en) * | 1988-07-14 | 1990-01-30 | Yamaha Motor Co Ltd | Pneumatic tire for motorcycle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6220320B1 (en) * | 1997-02-27 | 2001-04-24 | Bridgestone Corporation | Pneumatic motorcycle tire |
| JP2007045367A (en) * | 2005-08-12 | 2007-02-22 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| US20100126645A1 (en) * | 2007-04-13 | 2010-05-27 | Samuel Santana Barboza | Motorcycle tires and method to improve performance and wear resistance of motorcycle tires |
| US20100282390A1 (en) * | 2007-11-06 | 2010-11-11 | Mario Mariani | Motorcycle tyre |
| US9150055B2 (en) * | 2007-11-06 | 2015-10-06 | Pirelli Tyre S.P.A. | Motorcycle tyre |
| JP2011189805A (en) * | 2010-03-12 | 2011-09-29 | Bridgestone Corp | Pneumatic tire for motorcycle |
| US11279180B2 (en) * | 2018-01-31 | 2022-03-22 | Sumitomo Rubber Industries, Ltd. | Tire for a motorcycle |
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