JP2021165088A - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
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- JP2021165088A JP2021165088A JP2020068913A JP2020068913A JP2021165088A JP 2021165088 A JP2021165088 A JP 2021165088A JP 2020068913 A JP2020068913 A JP 2020068913A JP 2020068913 A JP2020068913 A JP 2020068913A JP 2021165088 A JP2021165088 A JP 2021165088A
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- 239000000835 fiber Substances 0.000 claims abstract description 59
- 239000011324 bead Substances 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 11
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 11
- 239000004760 aramid Substances 0.000 claims description 8
- 229920003235 aromatic polyamide Polymers 0.000 claims description 8
- -1 polyethylene terephthalate Polymers 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 13
- 230000035939 shock Effects 0.000 description 13
- 229920001778 nylon Polymers 0.000 description 8
- 229920006231 aramid fiber Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
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- 229920000728 polyester Polymers 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre 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
- B60C9/0042—Reinforcements made of synthetic 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
- B60C9/02—Carcasses
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
-
- 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
-
- 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
- B60C2009/0085—Tensile strength
-
- 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
- B60C2009/0092—Twist structure
-
- 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
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C2009/0416—Physical properties or dimensions of the carcass 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
- B60C9/02—Carcasses
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C2009/0416—Physical properties or dimensions of the carcass cords
- B60C2009/0433—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
- B60C9/02—Carcasses
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C2009/0416—Physical properties or dimensions of the carcass cords
- B60C2009/0458—Elongation of the reinforcements at break point
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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
- B60C9/02—Carcasses
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C2009/0416—Physical properties or dimensions of the carcass cords
- B60C2009/0466—Twist structures
-
- 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
- B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
- B60C2009/0475—Particular materials of the carcass 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
- 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
- B60C2009/2214—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 the materials of the zero degree ply 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
- 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
- B60C2009/2252—Physical properties or dimension of the zero degree ply cords
- B60C2009/2261—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
- 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
- B60C2009/2252—Physical properties or dimension of the zero degree ply cords
- B60C2009/2276—Tensile strength
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
- D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Tires In General (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
K=T×D1/2 ・・・(1)
(式中、Tはカーカスコードの上撚り数[回/10cm]であり、Dはカーカスコードの総繊度[dtex]である。)
K=T×D1/2 ・・・(1)
(式中、Tはカーカスコードの上撚り数[回/10cm]であり、Dはカーカスコードの総繊度[dtex]である。)
各試験タイヤをリムサイズ20×9 1/2Jのホイールに組み付け、内圧270kPaで表面が平滑な鋼製で直径1707mmのドラムを備えたドラム試験機に装着し、周辺温度を38±3℃に制御し、速度120km/hから30分毎に10km/hずつ加速し、タイヤに故障が生じるまでの走行距離を計測した。評価結果は、従来例1の測定値を100とする指数にて示した。この指数値が大きいほど、タイヤに故障が生じるまでの走行距離が大きく、高速耐久性が優れていることを意味する。尚、この指数値が「110」未満であると、充分な改善効果が得られなかったことを意味する。
各試験タイヤをリムサイズ20×9 1/2Jのホイールに組み付けて、空気圧を270kPaとして排気量2000ccの試験車両(四輪駆動車)に装着し、2名が乗車した状態で乾燥路面からなるテストコースにて、テストドライバーによる操縦安定性の官能評価を行った。評価結果は、従来例1を3.0(基準)とする5点法にて評価し、最高点と最低点を除いた5名の平均点で表した。この評価値が大きいほど操縦安定性に優れることを意味する。尚、この点数が「3.5」以上であれば、優れた操縦安定性が得られたことを意味する。
各試験タイヤを、リムサイズ20×9 1/2Jのホイールに組み付け、空気圧を270kPaとし、プランジャー径19±1.6mmのプランジャーを負荷速度(プランジャーの押し込み速度)50.0±1.5m/minの条件でトレッド中央部に押し付けるタイヤ破壊試験を行い、タイヤ強度(タイヤの破壊エネルギー)を測定した。評価結果は、従来例1の測定値を100とする指数にて示した。この値が大きいほど破壊エネルギーが大きく、耐ショックバースト性に優れることを意味する。尚、この指数値が「110」未満であると、充分な改善効果が得られなかったことを意味する。
2 サイドウォール部
3 ビード部
4 カーカス層
5 ビードコア
6 ビードフィラー
7 ベルト層
8 ベルト補強層
CL タイヤ赤道
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、これら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装架された少なくとも1層のカーカス層と、前記トレッド部における前記カーカス層の外周側に配置された複数層のベルト層と、前記ベルト層の外周側に配置されたベルト補強層とを有する空気入りタイヤにおいて、
前記カーカス層は有機繊維コードからなるカーカスコードで構成され、前記カーカスコードの破断伸びが20%以上、前記カーカスコードの前記ベルト層の内周側における1.5cN/dtex負荷時の伸びが5.5%〜8.5%であり、
前記ベルト補強層は有機繊維コードからなるカバーコードで構成され、前記カバーコードの3.0%伸長時の幅50mm当たりの引張強度が2.8kN〜4.0kNであることを特徴とする空気入りタイヤ。 - 前記カーカスコードの熱収縮率が0.5%〜2.5%であることを特徴とする請求項1に記載の空気入りタイヤ。
- 下記式(1)で表される前記カーカスコードの撚り係数Kが2000〜2500であることを特徴とする請求項1または2に記載の空気入りタイヤ。
K=T×D1/2 ・・・(1)
(式中、Tは前記カーカスコードの上撚り数[回/10cm]であり、Dは前記カーカスコードの総繊度[dtex]である。) - 前記カーカスコードがポリエチレンテレフタレート繊維を含むことを特徴とする請求項1〜3のいずれかに記載の空気入りタイヤ。
- 前記カバーコードが芳香族ポリアミド繊維を含むことを特徴とする請求項1〜4のいずれかに記載の空気入りタイヤ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020068913A JP6915720B1 (ja) | 2020-04-07 | 2020-04-07 | 空気入りタイヤ |
PCT/JP2021/014309 WO2021206016A1 (ja) | 2020-04-07 | 2021-04-02 | 空気入りタイヤ |
US17/995,240 US12030351B2 (en) | 2020-04-07 | 2021-04-02 | Pneumatic tire |
DE112021000824.2T DE112021000824B4 (de) | 2020-04-07 | 2021-04-02 | Luftreifen |
CN202180025084.2A CN115362071B (zh) | 2020-04-07 | 2021-04-02 | 充气轮胎 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020068913A JP6915720B1 (ja) | 2020-04-07 | 2020-04-07 | 空気入りタイヤ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6915720B1 JP6915720B1 (ja) | 2021-08-04 |
JP2021165088A true JP2021165088A (ja) | 2021-10-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020068913A Active JP6915720B1 (ja) | 2020-04-07 | 2020-04-07 | 空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US12030351B2 (ja) |
JP (1) | JP6915720B1 (ja) |
CN (1) | CN115362071B (ja) |
DE (1) | DE112021000824B4 (ja) |
WO (1) | WO2021206016A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7287443B1 (ja) | 2021-12-17 | 2023-06-06 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP7287444B1 (ja) | 2021-12-17 | 2023-06-06 | 横浜ゴム株式会社 | 空気入りタイヤ |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6950790B1 (ja) * | 2020-07-17 | 2021-10-13 | 横浜ゴム株式会社 | 空気入りタイヤ |
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CN115362071A (zh) | 2022-11-18 |
US20230118208A1 (en) | 2023-04-20 |
JP6915720B1 (ja) | 2021-08-04 |
WO2021206016A1 (ja) | 2021-10-14 |
CN115362071B (zh) | 2023-05-12 |
DE112021000824T5 (de) | 2022-11-17 |
US12030351B2 (en) | 2024-07-09 |
DE112021000824B4 (de) | 2024-02-08 |
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