JP6196494B2 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
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- JP6196494B2 JP6196494B2 JP2013166791A JP2013166791A JP6196494B2 JP 6196494 B2 JP6196494 B2 JP 6196494B2 JP 2013166791 A JP2013166791 A JP 2013166791A JP 2013166791 A JP2013166791 A JP 2013166791A JP 6196494 B2 JP6196494 B2 JP 6196494B2
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- 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
- B60C3/00—Tyres characterised by the transverse section
- B60C3/04—Tyres characterised by the transverse section characterised by the relative dimensions of the section, e.g. low profile
-
- 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
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/02—Carcasses
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
- B60C9/2009—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords comprising plies of different materials
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
- B60C9/2204—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre obtained by circumferentially narrow strip winding
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
- B60C2009/0078—Modulus
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C2009/1828—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by special physical properties of the belt ply
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2012—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers
- B60C2009/2019—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers comprising cords at an angle of 30 to 60 degrees to the circumferential 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2048—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by special physical properties of the belt plies
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2048—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by special physical properties of the belt plies
- B60C2009/2051—Modulus of the ply
- B60C2009/2058—Modulus of the ply being different between adjacent plies
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/208—Modulus of the cords
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/2083—Density in width 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/2093—Elongation of the reinforcements at break point
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
- B60C2009/2228—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre characterised by special physical properties of the zero degree plies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Description
該カーカスの半径方向外側かつトレッド部の内部に配され、かつベルトコードがタイヤ赤道に対して互いに逆向きの角度θで傾斜配列された2枚のベルトプライからなるベルト層と、
該ベルト層の半径方向外側かつトレッド部の内部に配され、かつバンドコードがタイヤ周方向に螺旋状に巻回された1枚のバンドプライからなるバンド層とを具えた空気入りタイヤであって、
タイヤ断面巾をWt(単位:mm)、ビード径をDb(単位:インチ)としたとき、前記タイヤ断面巾Wtが次式(1)、(2)を充足するとともに、
Wt≦ −0.7257×(Db)2 + 42.763×Db − 339.67 −−−(1)
Wt≧ −0.7257×(Db)2 + 48.568×Db − 552.33 −−−(2)
前記ベルトコードの角度θを35°〜55°の範囲とし、
しかも前記ベルトコード1本当たりの、伸び0.4%〜1.0%の範囲における引張り剛性をEa、前記第1、第2のベルトプライにおけるベルトコードと直角方向のプライ巾1mm当たりのベルトコードの打ち込み本数をNaとしたとき、前記引っ張り剛性Eaと打ち込み本数Naとの積(Ea×Na)であるベルトプライのプライ剛性は、14000〜20000N/mmであることを特徴としている。
Dt≦ 59.078×Wt0.498 −−−(4)
Dt≧ 59.078×Wt0.467 −−−(5)
Wt≦ −0.7257×(Db)2 + 42.763×Db − 339.67 −−−(1)
Wt≧ −0.7257×(Db)2 + 48.568×Db − 552.33 −−−(2)
Wt=−0.7257×(Db)2 + 39.134×Db − 217.30 −−−(A)
Dt≦ 59.078×Wt0.498 −−−(4)
Dt≧ 59.078×Wt0.467 −−−(5)
Dt= 59.078×Wt0.448 −−−(B)
W=0.0098×H2−2.9758×H+343.69 −−−(6)
又基準タイヤのリム径Dr0は、タイヤ扁平率H(単位:%)を用いて次式(7)で計算される値Drに最も近い整数として定義される。
Dr=0.002×H2−0.3547×H+29.783 −−−(7)
W=0.0098×602−2.9758×60+343.69 = 203
であり、従って、タイヤ巾Wt0は、203に最も近い呼び幅である205として定義される。
又式(7)から、
Dr=0.002×602−0.3547×60+29.783 = 15.7
であり、従って、リム径Dr0は、15.7に最も近い整数である16として定義される。即ち、基準タイヤのタイヤサイズは、203/60R16となる。
転がり抵抗試験機を用い、下記の条件にて、タイヤの転がり抵抗(単位N)を測定し、その逆数を比較例1を100とする指数で示している。数値が大なほど転がり抵抗が少なく良好である。
温度:20℃、
荷重:4.8kN
内圧:表1に記載
リム:正規リム
速度:80km/h
実験室にて、バンパー下端からの露出高さを140mmとし、走行速度100km/hに相当する空気をタイヤの露出面に送風し、そのときタイヤが受ける空気力を測定した。評価は、測定値の逆数を、比較例1を100とする指数で示し、数値が大なほど空気抵抗が小さく良好である。
試供タイヤの縦バネ定数を測定し、その逆数を比較例1を100とする指数で示した。数値が大なほど、乗り心地性能に優れている。
実施例2(165/65R19)を標準タイヤ(実施例3A)とし、ベルトコードの角度θ、ベルトプライ剛性Ea/Na、バンドプライ剛性Eb/Nbのみを表2の仕様で変化させたタイヤを試作し、そのときの転がり抵抗と、ラブ溝溝底での亀裂損傷性(TGC)とをテストした。
トレッド部に配される周方向溝とラグ溝の溝底に、厚さ0.25mm のかみそりの刃で、深さ2mm、長さ8mm のカット傷を入れ、その口開き形状を型取りして計測する。又前記タイヤをリム(5.0J×19)、内圧(310kPa)、荷重(4.8kN)にてドラム上を10000km走行させ、型取りした走行前のカット傷の寸法と、走行後のカット傷の寸法とを比較し、増加量の逆数を、標準タイヤを100とする指数で示した。数値が大なほど耐亀裂損傷性に優れている。
2 トレッド部
3 サイドウォール部
4 ビード部
5 ビードコア
6 カーカス
7 ベルト層
7A、7B ベルトプライ
7c ベルトコード
9 バンド層
9A バンドプライ
Co タイヤ赤道面
Pm 最大幅位置
Claims (4)
- トレッド部からサイドウォール部をへてビード部のビードコアに至るカーカスと、
該カーカスの半径方向外側かつトレッド部の内部に配され、かつベルトコードがタイヤ赤道に対して互いに逆向きの角度θで傾斜配列された2枚のベルトプライからなるベルト層と、
該ベルト層の半径方向外側かつトレッド部の内部に配され、かつバンドコードがタイヤ周方向に螺旋状に巻回された1枚のバンドプライからなるバンド層とを具えた空気入りタイヤであって、
タイヤ断面巾をWt(単位:mm)、ビード径をDb(単位:インチ)としたとき、前記タイヤ断面巾Wtが次式(1)、(2)を充足するとともに、
Wt≦ −0.7257×(Db)2 + 42.763×Db − 339.67 −−−(1)
Wt≧ −0.7257×(Db)2 + 48.568×Db − 552.33 −−−(2)
前記ベルトコードの角度θを35°〜55°の範囲とし、
しかも前記ベルトコード1本当たりの、伸び0.4%〜1.0%の範囲における引張り剛性をEa、前記第1、第2のベルトプライにおけるベルトコードと直角方向のプライ巾1mm当たりのベルトコードの打ち込み本数をNaとしたとき、前記引っ張り剛性Eaと打ち込み本数Naとの積(Ea×Na)であるベルトプライのプライ剛性は、14000〜20000N/mmであることを特徴とする空気入りタイヤ。 - 前記ベルトコードの角度θは、45°〜55°であることを特徴とする請求項1記載の空気入りタイヤ。
- 前記バンドコード1本当たりの、伸び3%〜5%の範囲における引張り剛性をEb、前記バンドプライにおけるバンドコードと直角方向のプライ巾1mm当たりのバンドコードの打ち込み本数をNbとしたとき、前記引っ張り剛性Ebと打ち込み本数Nbとの積(Eb×Nb)であるバンドプライのプライ剛性は、1600〜2500N/mmであることを特徴とする請求項1又は2記載の空気入りタイヤ。
- タイヤ外径Dt(単位:mm)は、次式(4)、(5)を充足することを特徴とする請求項1〜3の何れかに記載の空気入りタイヤ。
Dt≦ 59.078×Wt 0.498 −−−(4)
Dt≧ 59.078×Wt 0.467 −−−(5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013166791A JP6196494B2 (ja) | 2013-08-09 | 2013-08-09 | 空気入りタイヤ |
US14/910,967 US20160193874A1 (en) | 2013-08-09 | 2014-07-17 | Pneumatic tire |
PCT/JP2014/068981 WO2015019818A1 (ja) | 2013-08-09 | 2014-07-17 | 空気入りタイヤ |
CN201480042292.3A CN105452017B (zh) | 2013-08-09 | 2014-07-17 | 充气轮胎 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013166791A JP6196494B2 (ja) | 2013-08-09 | 2013-08-09 | 空気入りタイヤ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015033984A JP2015033984A (ja) | 2015-02-19 |
JP6196494B2 true JP6196494B2 (ja) | 2017-09-13 |
Family
ID=52461157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013166791A Active JP6196494B2 (ja) | 2013-08-09 | 2013-08-09 | 空気入りタイヤ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160193874A1 (ja) |
JP (1) | JP6196494B2 (ja) |
CN (1) | CN105452017B (ja) |
WO (1) | WO2015019818A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6348713B2 (ja) * | 2014-01-09 | 2018-06-27 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP6694805B2 (ja) * | 2016-12-09 | 2020-05-20 | 株式会社ブリヂストン | 重荷重用タイヤ |
WO2019180352A1 (fr) * | 2018-03-20 | 2019-09-26 | Compagnie Generale Des Etablissements Michelin | Pneumatique comprenant une unique nappe de carcasse avec une profondeur de déformation dans le flanc améliorée après rodage |
JP7380014B2 (ja) | 2019-09-26 | 2023-11-15 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US20240066922A1 (en) | 2022-08-26 | 2024-02-29 | Sumitomo Rubber Industries, Ltd. | Tire |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2607326B2 (ja) * | 1991-11-08 | 1997-05-07 | 住友ゴム工業株式会社 | 重荷重用ラジアルタイヤ |
JP4266053B2 (ja) * | 1998-12-28 | 2009-05-20 | 株式会社ブリヂストン | 空気入りタイヤ |
JP2003019762A (ja) * | 2001-07-06 | 2003-01-21 | Sumitomo Rubber Ind Ltd | 空気入りラジアルタイヤの製造方法及びそれにより製造された空気入りラジアルタイヤ |
JP2007168711A (ja) * | 2005-12-26 | 2007-07-05 | Bridgestone Corp | 重荷重用空気入りラジアルタイヤ |
US9156313B2 (en) * | 2008-12-19 | 2015-10-13 | Compagnie Generale Des Establissements Michelin | Hydroplaning performance for a tire |
WO2011161854A1 (ja) * | 2010-06-21 | 2011-12-29 | 株式会社ブリヂストン | 乗用車用空気入りラジアルタイヤ |
US10207542B2 (en) * | 2011-11-02 | 2019-02-19 | Bridgestone Corporation | Pneumatic radial tire for passenger vehicle |
EP2774780B1 (en) * | 2011-11-02 | 2016-04-27 | Bridgestone Corporation | Pneumatic radial tire for passenger car |
-
2013
- 2013-08-09 JP JP2013166791A patent/JP6196494B2/ja active Active
-
2014
- 2014-07-17 CN CN201480042292.3A patent/CN105452017B/zh active Active
- 2014-07-17 WO PCT/JP2014/068981 patent/WO2015019818A1/ja active Application Filing
- 2014-07-17 US US14/910,967 patent/US20160193874A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20160193874A1 (en) | 2016-07-07 |
CN105452017A (zh) | 2016-03-30 |
WO2015019818A1 (ja) | 2015-02-12 |
CN105452017B (zh) | 2017-10-31 |
JP2015033984A (ja) | 2015-02-19 |
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