JP2021079926A - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
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- JP2021079926A JP2021079926A JP2019211736A JP2019211736A JP2021079926A JP 2021079926 A JP2021079926 A JP 2021079926A JP 2019211736 A JP2019211736 A JP 2019211736A JP 2019211736 A JP2019211736 A JP 2019211736A JP 2021079926 A JP2021079926 A JP 2021079926A
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- 238000005096 rolling process Methods 0.000 abstract description 18
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- 229920001971 elastomer Polymers 0.000 description 18
- 239000005060 rubber Substances 0.000 description 17
- 229920000297 Rayon Polymers 0.000 description 11
- 239000002964 rayon Substances 0.000 description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
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- 229920001778 nylon Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
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- 229920006231 aramid fiber Polymers 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/28—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by the belt or breaker dimensions or curvature relative to carcass
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- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
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- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
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- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
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- 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
- B60C2009/2016—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 10 to 30 degrees to the circumferential direction
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
[空気入りタイヤ]
以下の説明において、タイヤ径方向とは、空気入りタイヤ1の回転軸であるタイヤ回転軸RXと直交する方向をいう。タイヤ径方向内側とは、タイヤ径方向においてタイヤ回転軸RXに向かう側をいう。タイヤ径方向外側とは、タイヤ径方向においてタイヤ回転軸RXから離れる側をいう。また、タイヤ周方向とは、タイヤ回転軸RXを中心軸とする周り方向をいう。また、タイヤ赤道面CLとは、タイヤ回転軸RXに直交すると共に、空気入りタイヤ1のタイヤ幅の中心を通る平面である。タイヤ赤道面CLは、空気入りタイヤ1のタイヤ幅方向における中心位置であるタイヤ幅方向中心線と、タイヤ幅方向における位置が一致する。タイヤ赤道線とは、タイヤ赤道面CL上にあって空気入りタイヤ1のタイヤ周方向に沿う線をいう。また、タイヤ幅方向とは、タイヤ回転軸RXと平行な方向をいう。タイヤ幅方向内側とは、タイヤ幅方向においてタイヤ赤道面(タイヤ赤道線)CLに向かう側をいう。タイヤ幅方向外側とは、タイヤ幅方向においてタイヤ赤道面CLから離れる側をいう。タイヤ幅は、タイヤ幅方向において最も外側に位置する部分同士のタイヤ幅方向における幅である。すなわち、タイヤ幅方向においてタイヤ赤道面CLから最も離れている部分間の距離である。
図2及び図3に示すように、車両500は、空気入りタイヤ1を含む走行装置501と、走行装置501に支持される車体502と、走行装置501を駆動するためのエンジン503とを備える。走行装置501は、空気入りタイヤ1を支持するホイール504と、ホイール504を支持する車軸505と、走行装置501の進行方向を変えるための操舵装置506と、走行装置501を減速又は停止させるためのブレーキ装置507とを有する。
2 トレッド部
3 トレッド踏面
4 トレッドゴム層
5 ショルダー部
8 サイドウォール部
10 ビード部
11 ビードコア
12 ビードフィラー
13 カーカス層
14 ベルト層
141、142 ベルト
16 インナーライナ
17 リムクッションゴム
18 タイヤ内面
20 陸部
20S ショルダー陸部
20M ミドル陸部
20C センター陸部
30 周方向主溝
30S ショルダー主溝
30C センター主溝
40 ベルトカバー
41 フルカバー部
45 エッジカバー部
500 車両
501 走行装置
502 車体
503 エンジン
504 ホイール
505 車軸
506 操舵装置
507 ブレーキ装置
600 表示部
Claims (5)
- タイヤ周方向に延在して環状をなすトレッド部と、前記トレッド部の両側に配置された一対のサイドウォール部と、前記サイドウォール部のタイヤ径方向内側に配置された一対のビード部と、を備え、前記一対のビード部間に架け渡された少なくとも1層のカーカス層と、前記カーカス層のタイヤ径方向外側に配置された複数層のベルト層と、を有する空気入りタイヤであって、
前記カーカス層は、有機繊維のフィラメント束を撚り合わせた有機繊維コードからなるカーカスコードで構成され、前記一対のビード部にて端部がタイヤ幅方向外側に巻き返されたターンアップ部を有し、
前記カーカスコードの切断伸度EBが、EB≧15%の条件を満足し、
タイヤ幅方向においてタイヤ赤道線から左右それぞれに前記ベルト層の2番目に幅広のベルトの幅の10%の幅の範囲にある前記ベルト層のベルト角度θcが、0.3rad≦θc≦0.6radの条件を満足し、
前記カーカスコードの切断伸度EBと、前記ベルト角度θcとが、800<1140×θc+20×EB<1400の条件を満足する空気入りタイヤ。 - 前記トレッド部は、前記タイヤ赤道線を挟んでタイヤ周方向に延在する一対のセンター主溝と、前記一対のセンター主溝に区画されたセンター陸部を有し、
タイヤ幅方向において前記タイヤ赤道線から左右それぞれに前記ベルト層の2番目に幅広のベルトの幅の10%の幅の範囲にある前記センター陸部の平均トータルゲージGCが、5mm≦GC≦10mmの条件を満足し、
前記トレッド部の陸部の平均トータルゲージGCと、前記カーカスコードの切断伸度EBと、前記ベルト角度θcとが、1300<60×GC+1140×θc+20×EB<2000の条件を満足する、請求項1に記載の空気入りタイヤ。 - 前記カーカスコードの1.0cN/dtex負荷時の中間伸度EMが、EM≦5.0%の条件を満足する、請求項1又は請求項2に記載の空気入りタイヤ。
- 前記カーカスコードの正量繊度CFが、4000dtex≦CF≦8000dtexの条件を満足する、請求項1から請求項3のいずれか一項に記載の空気入りタイヤ。
- ディップ処理後の前記カーカスコードの撚り係数CTが、CT≧2000(T/dm)×dtex0.5の条件を満足する、請求項1から請求項4のいずれか一項に記載の空気入りタイヤ。
Priority Applications (5)
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US17/756,107 US20220402304A1 (en) | 2019-11-22 | 2020-09-16 | Pneumatic tire |
CN202080066192.XA CN114423623B (zh) | 2019-11-22 | 2020-09-16 | 充气轮胎 |
DE112020005090.4T DE112020005090T5 (de) | 2019-11-22 | 2020-09-16 | Luftreifen |
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- 2020-09-16 DE DE112020005090.4T patent/DE112020005090T5/de active Pending
- 2020-09-16 CN CN202080066192.XA patent/CN114423623B/zh active Active
- 2020-09-16 WO PCT/JP2020/035134 patent/WO2021100302A1/ja active Application Filing
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JPS61188204A (ja) * | 1985-02-13 | 1986-08-21 | Sumitomo Rubber Ind Ltd | ラジアルタイヤ |
JPH0270501A (ja) * | 1988-09-06 | 1990-03-09 | Sumitomo Rubber Ind Ltd | 高速ラジアルタイヤ |
WO2016190299A1 (ja) * | 2015-05-27 | 2016-12-01 | 横浜ゴム株式会社 | 空気入りタイヤ |
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JP2020142702A (ja) * | 2019-03-07 | 2020-09-10 | 横浜ゴム株式会社 | 空気入りタイヤ |
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JP7381859B2 (ja) | 2023-11-16 |
DE112020005090T5 (de) | 2022-08-25 |
CN114423623A (zh) | 2022-04-29 |
WO2021100302A1 (ja) | 2021-05-27 |
US20220402304A1 (en) | 2022-12-22 |
CN114423623B (zh) | 2023-10-03 |
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