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WO2020174848A1 - Pneu radial - Google Patents

Pneu radial Download PDF

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Publication number
WO2020174848A1
WO2020174848A1 PCT/JP2019/050387 JP2019050387W WO2020174848A1 WO 2020174848 A1 WO2020174848 A1 WO 2020174848A1 JP 2019050387 W JP2019050387 W JP 2019050387W WO 2020174848 A1 WO2020174848 A1 WO 2020174848A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
polyethylene terephthalate
terephthalate fiber
fiber cord
cover layer
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.)
Ceased
Application number
PCT/JP2019/050387
Other languages
English (en)
Japanese (ja)
Inventor
美由紀 中島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to CN201980092907.6A priority Critical patent/CN113498444B/zh
Priority to JP2021501636A priority patent/JP7088402B2/ja
Publication of WO2020174848A1 publication Critical patent/WO2020174848A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/04—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics with a core of fibres or filaments arranged parallel to the centre line

Definitions

  • the present invention relates to a pneumatic radial tire using a polyethylene terephthalate (PET) fiber cord for a belt cover layer, and more specifically, to effectively reduce mouth noise while maintaining good durability.
  • PET polyethylene terephthalate
  • a force-carcass layer is mounted between a pair of bead portions, and a plurality of belt layers are arranged on the outer circumferential side of the force-carcass layer in the tread portion.
  • a belt cover layer including a plurality of organic fiber cords spirally wound along the tire circumferential direction is disposed on the outer peripheral side of the belt layer.
  • nylon fiber cords have been mainly used as the organic fiber cords used in the belt cover layer, but it is proposed to use polyethylene terephthalate fiber cords, which have higher elasticity and are cheaper than nylon fiber cords. (For example, see Patent Document 1).
  • Patent Document 1 Japanese Unexamined Patent Publication No. 20000-630031 ⁇ 0 2020/174848 2 ?(: 17 2019/050387 Summary of invention
  • An object of the present invention is to provide a pneumatic radial tire capable of effectively reducing mouth noise while maintaining good durability. Means for solving the problem
  • a pneumatic radial tire in which a plurality of belt layers are arranged on the outer peripheral side of the belt layer, and a belt cover layer containing a polyethylene terephthalate fiber cord spirally wound in the tire circumferential direction is arranged on the outer peripheral side of the belt layer.
  • the polyethylene terephthalate fiber cord 2 0 ⁇ 1 ⁇ 1/6 X-load modulus at 1 0 0 ° ⁇ 3 5_Rei 1 ⁇ 1 / (6 Father -%)... ⁇ 5 5_Rei / ( 16 x %), frequency 2 0 1 to 1 ⁇ , strain ⁇ 0.1 %, initial load 3 ⁇ ⁇ 9, heating rate 2 ⁇ ⁇ / min 1 3 n
  • the peak value of 3 is 0.
  • polyethylene terephthalate fiber cord has a peak value of 3 1 ⁇ 5 as compared with nylon fiber cord. It was recognized that the value was high and the exothermicity was high, and further that the lower the tension applied to the polyethylene terephthalate fiber cord, the higher the peak value of I 3 n 5 was. Then, the heat generation of the polyethylene terephthalate fiber cord that constitutes the belt cover layer becomes a factor that promotes the separation failure.
  • polyethylene terephthalate forming the belt cover layer is used. ⁇ 02020/174848 3 ⁇ (: 170?2019/050387
  • the cord noise is sufficiently secured while the cord fatigue is sufficiently secured.
  • the peak value of t an 5 measured under the above conditions for the polyethylene terephthalate fiber cord is less than 0.15, the heat generation of the polyethylene terephthalate fiber cord is suppressed and the belt cover layer It is possible to suppress the occurrence of separation failure in the periphery. This makes it possible to effectively reduce mouth noise while maintaining good durability.
  • the tension of polyethylene terephthalate fiber cord in the tire is 0.90. ⁇ X or more is preferable.
  • the polyethylene terephthalate fiber cord that constitutes the belt cover layer The peak value of can be reduced and the durability improvement effect can be enhanced.
  • the tension of the polyethylene terephthalate fiber cord in the tire in the center area of the tread portion is 6 and the tension of the polyethylene terephthalate fiber cord in the tire area of the tread portion is 3 in the tire.
  • ⁇ 6/Ding 3 is 1.0 £ Ding ⁇ 6/Ding 3 £ 2.0 It is preferable to satisfy the relationship. This ensures sufficient tension in the tire of the polyethylene terephthalate fiber cord in the shoulder area of the tread portion, and effectively suppresses the occurrence of separation failure starting from the shoulder area of the tread portion. it can.
  • the belt cover layer preferably has a structure in which one polyethylene terephthalate fiber cord is spirally wound. It is difficult for tension to be applied to the ends of the poly(ethylene terephthalate) fiber cords that make up the belt cover layer, but the effect can be minimized by winding the end of the cord. Thereby, the tension of the polyethylene terephthalate fiber cord can be sufficiently secured in a wider area of the belt cover layer, and the effect of improving durability can be enhanced.
  • the elastic modulus under load of ⁇ ⁇ 1 ⁇ 1/ ⁇ X [ ⁇ 1 ⁇ 1/(I ⁇ X %)] is "" 3-Chemical fiber Tire code test method” ⁇ 02020/174848 4 ⁇ (: 170?2019/050387
  • the tension per reinforcing cord of the belt cover layer was measured by the following measuring method. That is, to remove a portion of the tread Dogomu of unloaded condition the tire to expose the reinforcing cords of Berutoka bar layer, its _ constant length in the reinforcing cord - after marked indicating the 8 sections of the Cut the reinforcing cord from the tire and measure the length after shrinkage. length Should be set large enough to eliminate measurement error as much as possible, for example, 5000101. When measuring the length 1-13, apply a load of 1/209/ ⁇ ! I 6 X of the indicated fineness to the reinforcing cord. afterwards, "
  • the stress-strain curve of the reinforcing cord was calculated according to the initial tensile resistance measurement conditions specified in I 3 1_ 101 7 to determine the strain.
  • the force 1_ 3 (1 ⁇ 1) at is calculated from the stress-strain curve.
  • the force thus obtained!-5 is the tension per reinforcing cord in the belt cover layer.
  • the temperature at the time of measurement shall be 20 ° and the humidity shall be 65%.
  • Fig. 1 is a meridional sectional view showing a pneumatic radial tire according to an embodiment of the present invention.
  • Fig. 2 is a plan view showing a belt layer and a belt cover layer extracted from the pneumatic radial tire of Fig. 1.
  • FIG. 3 is a cross-sectional view showing the structure of the belt cover layer.
  • Fig. 4 [Fig. 4] Fig. 4 (a), ( ⁇ ) shows the strip used for the belt cover layer, Fig. 4 (a) is a perspective view showing the strip containing a plurality of cords, and Fig. 4 (13) 1 is a perspective view showing a strip containing a cord.
  • 3 is a graph showing the relationship between temperature and temperature.
  • FIG. 6 is a cross-sectional view showing a forming drum for forming a tread ring including a belt layer and a belt cover layer. ⁇ 0 2020/174848 5 ⁇ (: 170?2019/050387
  • FIG. 1 shows a pneumatic radial tire according to an embodiment of the present invention
  • FIG. 2 shows its belt layer and belt cover layer
  • Fig. 3 shows the structure of the belt cover layer
  • Figs. 4(a) and 4() show the strip used for the belt cover layer.
  • the pneumatic radial tire according to the present embodiment is provided with a pair of annular tread portions 1 extending in the tire circumferential direction, and a pair of tread portions 1 arranged on both sides of the tread portion 1. It is provided with a side wall part 2 and a pair of bead parts 3 arranged inside the side wall part 2 in the radial direction of the tire.
  • a plurality of main grooves 10 extending in the tire circumferential direction are formed in the tread portion 1, but various grooves including a lug groove extending in the tire width direction may be formed in addition to the main groove 10. it can.
  • a force-cass layer 4 including a plurality of reinforcing cords extending in the tire radial direction is mounted between the pair of bead portions 3, 3.
  • An annular bead core 5 is embedded in each bead portion 3, and a bead filler 6 made of a rubber composition having a triangular cross section is arranged on the outer periphery of the bead core 5.
  • the force layer 4 is wound around the bead core 5 from the inside of the tire to the outside.
  • an organic fiber cord such as a polyester cord is preferably used.
  • a plurality of belt layers 7 are embedded over the entire circumference of the tire on the outer peripheral side of the force-cass layer 4 in the tread portion 1.
  • These belt layers 7 include a plurality of reinforcing cords inclined with respect to the tire circumferential direction, and the reinforcing cords are arranged so as to intersect each other between the layers.
  • the inclination angle of the reinforcing cord with respect to the tire circumferential direction is set in the range of, for example, 10 ° to 40 ° .
  • a steel cord, for example, is preferably used as the reinforcing cord of the belt layer 7.
  • a reinforcing cord ⁇ (see Fig. 3) is provided on the outer peripheral side of the belt layer 7 in the tire circumferential direction for the purpose of improving high-speed durability and reducing mouth noise.
  • ⁇ 02020/174848 6 ⁇ (: 170?2019/050387
  • the belt cover layer 8 may be a full cover that covers the entire area of the belt layer 7, or a combination of a full cover that covers the entire area of the belt layer 7 and an edge cover that covers only both edges of the belt layer 7.
  • the belt cover layer 8 is composed of a reinforcing cord 0 and a coat rubber covering the reinforcing cord 0.
  • the belt cover layer 8 is a jointless structure in which at least one reinforcing cord ⁇ is aligned and covered with rubber to form a strip 3 (see Fig. 4 ( 3 ), (b)) that is spirally wound in the tire circumferential direction. Has become.
  • Strip 3 in Figure 4(a) is coated rubber A plurality of reinforcing cords ⁇ are contained therein, and strip 3 in Fig. 4 (10) contains one reinforcing cord ⁇ in the coated rubber.
  • the reinforcement cord ⁇ constituting the belt cover layer 8 has a modulus of elasticity of 2.0 ⁇ 1 ⁇ 1/ ⁇ 1 1 6 under a father load of 3.5 ⁇ 1 ⁇ 1/(I
  • polyethylene terephthalate fiber cord in the range of ⁇ X-%) ⁇ 5.5 ⁇ 1 ⁇ 1/(I 6 X %), it is possible to secure mouth fatigue while maintaining sufficient cord fatigue resistance. Can be reduced.
  • the peak value of I 3 n 5 measured under the above conditions for the polyethylene terephthalate-fiber cord to be less than 0.15, the heat generation of the polyethylene terephthalate fiber cord can be suppressed and the belt cover layer It is possible to suppress the occurrence of separation failure around the area 8. This makes it possible to effectively reduce mouth noise while maintaining good durability.
  • polyethylene terephthalate fibers used for the belt cover layer 8 ⁇ 02020/174848 7 ⁇ (: 170?2019/050387
  • the modulus of elasticity of the cord under 2.0 X 1/6 X load is smaller than 3.5 X 1 ⁇ 1/(6 father ⁇ % ), it is not possible to sufficiently reduce the mid-frequency noise. On the other hand, if it is larger than 5. (6 father %), the fatigue resistance of the cord is reduced and the durability of the ear is reduced.
  • the polyethylene terephthalate fiber cord used for the belt cover layer 8 if the peak value of I 3 n 5 measured under the above conditions is larger than ⁇ 0.15, the polyethylene terephthalate fiber cord will generate heat. The durability of the tire is deteriorated due to the high durability, and a separation failure is likely to occur especially around the belt cover layer 8.
  • the polyethylene terephthalate fiber cord used for the belt cover layer 8 is composed of many filaments, and the filament count is preferably 300 or less. If the filament count is more than 300, the friction between the filaments of the polyethylene terephthalate fiber cord will increase, heat generation will be accelerated and the cord fatigue resistance will decrease.
  • FIG. 5 shows polyethylene terephthalate fiber cord 3 6 is a graph showing the relationship between 5 and temperature.
  • 2 strain ⁇ 0.1%
  • change of 13 n 3 when initial load is 509 Curve 8 initial load 8 for 3009 Change curve of 5 and 1 3 when initial load is 50 09
  • a change curve ⁇ of 5 is depicted.
  • Polyethylene terephthalate fiber cord I 3 5 changes with increasing temperature, and has a peak value (maximum value) in the temperature range of 0° to 200°, for example.
  • I 3 n 5 of polyethylene terephthalate fiber cord has a lower initial load and a lower tension. The peak value of 5 tends to rise.
  • Polyethylene terephthalate fiber cord with a peak value of I 3 n 5 of 3009 or less is used.
  • the peak value of 5 is better than 0.05.
  • the tension in the tyre of the polyethylene terephthalate fiber cord is required to be, for example, 0.202 1/I 6 X or more.
  • the tension in the tire of polyethylene terephthalate fiber cord is 0.90
  • the above-mentioned tension regulation is based on the polyethylene terephthalate fiber cord. It is applied to the part of the (strip) terminal excluding the two laps. In other words, the above-mentioned tension regulations are satisfied in the entire area of the polyethylene terephthalate fiber cord excluding the two laps from the end.
  • the tension area 6 in the tire of the polyethylene terephthalate fiber cord in the center area of the tread portion 1 and the shoulder area of the tread portion 1 are as follows. It is desirable that the ratio of polyethylene terephthalate fiber cord in the tire to tension 3 in the tire is 6 £ 6/6 3 £ 2.0. This ensures sufficient tension in the tire of the polyethylene terephthalate fiber cord in the shoulder area of the tread portion 1 and effectively suppresses the occurrence of separation failures starting from the shoulder area of the tread portion 1. can do.
  • the tension in the tire of the polyethylene terephthalate fiber cord in the area is the tension measured at the tire equator, and the tension in the tire of the polyethylene terephthalate fiber cord in the shoulder area of the tread 1 is 3 Is the tension measured at the outermost position in the width direction of the part of the polyethylene terephthalate fiber cord (strip) that constitutes the belt cover layer 8 excluding the two wrapping parts from the end.
  • Fig. 6 shows an example of a forming drum for forming a tread ring including a belt layer and a belt cover layer.
  • the molding drum B has a curvature on its outer peripheral surface that curves along the tire width direction.
  • the molded drum has a cross-sectional shape in which the outer diameter becomes the largest in the center portion in the width direction and the outer diameter gradually decreases toward the outer side in the width direction.
  • the belt cover layer 8 is formed in a shape similar to the final shape in the tire. This is advantageous in achieving the relationship of .0 £ Din 06 / Ding 3 £ 2.0.
  • the belt cover layer 8 preferably has a structure in which one polyethylene terephthalate fiber cord is spirally wound. That is, as shown in Fig. 4 (10), it is preferable that the strip 3 including one reinforcing cord ⁇ is spirally wound along the tire circumferential direction. It is difficult for tension to be applied to the ends of the polyethylene terephthalate fiber cords that form the belt cover layer 8, but the effect can be minimized by winding one end. This makes it possible to sufficiently secure the tension of the polyethylene terephthalate fiber cord in a wider area of the belt cover layer 8 and enhance the effect of improving the durability.
  • the sex ratio and the peak value of I 3 n 3 can be appropriately adjusted depending on the twist structure and dip conditions. For example, in the twisted structure, the lower the number of twists, the lower the peak value of 1 an 8 tends to be.
  • the twist coefficient ⁇ represented by the following formula (1) of the polyethylene terephthalate fiber cord constituting the belt cover layer 8 is preferably in the range of 1300 to 1800.
  • the twisting coefficient ⁇ of the polyethylene terephthalate fiber cord that constitutes the belt cover layer 8 is smaller than 1 300, the fatigue resistance of the cord is reduced and the durability of the evening cord is reduced. On the contrary, if it is larger than 1 800, the code module is lowered and the medium frequency noise cannot be effectively reduced.
  • the total fineness of the polyethylene terephthalate fiber cords constituting the belt cover layer 8 is in the range of 1 000 6 father to 3000 6 X, and the number of twists is 20. It is desirable to be in the range
  • the tire size is It is equipped with a tread part, a pair of side parts, and a pair of bead parts, and a force-cuss layer is mounted between the pair of bead parts, and two layers are provided on the outer peripheral side of the force-cuss layer in the tread part.
  • the belt cover layer is arranged, and the belt cover layer containing the polyethylene terephthalate fiber cord spirally wound along the tire circumferential direction is arranged on the outer peripheral side of the belt layer.
  • Polyethylene terephthalate fiber cord (1 100 I 6 father / 2) used for 2 .00 0 1 ⁇ 1/16 X elastic modulus under load, under specified conditions (frequency 2 I, strained soil 0.01%, initial load 3009, heating rate 2° ⁇ /min) ⁇ 0 2020/174848 1 1 ⁇ (: 170?2019/050387
  • test tire was mounted on a wheel with a rim size of 18 x 7" and mounted as the front and rear wheels of a passenger car with a displacement of 250 000, and the air pressure was set to 2 3 0 1 ⁇ 3 and inside the window of the driver's seat.
  • a sound collection microphone was installed and a test track consisting of an asphalt road surface. The sound pressure level near the frequency of 3 1 5 1 to 1 when running under the condition II was measured. The evaluation results are based on Conventional Example 1 and show the amount of change (0.01) from that standard.
  • test tires pretreated in this way were made of steel with a smooth surface and a diameter of 170 It was mounted on a drum tester equipped with a drum, and the ambient temperature was controlled to 38 ⁇ 3 ° ⁇ And, every 0.5 hours the speed is 10 The test was continued until the tire broke, and the running distance was measured. The evaluation results are shown by an index with Conventional Example 1 as 100. The larger the index value, the better the durability.
  • the failure mode of the tire was investigated, and the failure in the vicinity of the winding end of the force layer was indicated by "8", the separation failure of the belt cover layer was indicated by "Mi”, and other The case of failure is indicated by " ⁇ ".

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tires In General (AREA)

Abstract

L'invention concerne un pneu radial permettant une réduction efficace des bruits de roulement et dont la durabilité est suffisamment préservée. Ce pneu radial comprend une section de bande de roulement 1, une paire de sections de paroi latérale 2 et une paire de sections de talon de pneu 3, alors qu'une couche de carcasse 4 est montée entre la paire de sections de talon 3,3, une pluralité de couches de ceinture 7 est disposée du côté périphérique externe de la couche de carcasse 4 dans la section de bande de roulement 1, et une couche de revêtement de ceinture 8, qui contient un câble en fibres de téréphtalate de polyéthylène enroulé en hélice le long de la direction circonférentielle du pneu, est disposée du côté périphérique externe de la couche de ceinture 7, le câble en fibres de téréphtalate de polyéthylène de la couche de revêtement de ceinture 8 présentant un module élastique se situant dans la plage de 3,5 cN/(tex·%) à 5,5 cN/(tex·%) sous une charge de 2,0 cN/dtex à 100 °C, et une valeur de pic tan δ inférieure ou égale à 0,15, mesurée dans les conditions suivantes : fréquence de 20 Hz, distorsion de ± 0,1 %, charge initiale de 300 g et vitesse de chauffage de 2 °C/minute.
PCT/JP2019/050387 2019-02-26 2019-12-23 Pneu radial Ceased WO2020174848A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980092907.6A CN113498444B (zh) 2019-02-26 2019-12-23 充气子午线轮胎
JP2021501636A JP7088402B2 (ja) 2019-02-26 2019-12-23 空気入りラジアルタイヤ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-033149 2019-02-26
JP2019033149 2019-02-26

Publications (1)

Publication Number Publication Date
WO2020174848A1 true WO2020174848A1 (fr) 2020-09-03

Family

ID=72239221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/050387 Ceased WO2020174848A1 (fr) 2019-02-26 2019-12-23 Pneu radial

Country Status (3)

Country Link
JP (1) JP7088402B2 (fr)
CN (1) CN113498444B (fr)
WO (1) WO2020174848A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4335661A1 (fr) * 2022-09-09 2024-03-13 Sumitomo Rubber Industries, Ltd. Pneumatique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0966705A (ja) * 1995-06-19 1997-03-11 Bridgestone Corp ラジアルタイヤ
JP2001180220A (ja) * 1999-12-24 2001-07-03 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JP2003220806A (ja) * 2002-01-31 2003-08-05 Yokohama Rubber Co Ltd:The 空気入りタイヤおよびその製造方法
JP2005112065A (ja) * 2003-10-06 2005-04-28 Bridgestone Corp 空気入りラジアルタイヤ
JP2007326436A (ja) * 2006-06-07 2007-12-20 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JP2012192826A (ja) * 2011-03-16 2012-10-11 Toyo Tire & Rubber Co Ltd 空気入りラジアルタイヤ
JP2017019461A (ja) * 2015-07-14 2017-01-26 東洋ゴム工業株式会社 空気入りタイヤ

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JP2006168595A (ja) * 2004-12-17 2006-06-29 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
WO2006077973A1 (fr) * 2005-01-21 2006-07-27 Bridgestone Corporation Pneu a affaissement limite
JP4953640B2 (ja) * 2005-01-21 2012-06-13 株式会社ブリヂストン 重荷重用空気入りラジアルタイヤ
JP5216587B2 (ja) * 2006-07-19 2013-06-19 株式会社ブリヂストン 空気入りタイヤ
JP4309466B2 (ja) * 2006-09-22 2009-08-05 横浜ゴム株式会社 空気入りラジアルタイヤ
WO2009091066A1 (fr) * 2008-01-18 2009-07-23 Bridgestone Corporation Pneu à carcasse radiale
DE102010036760A1 (de) * 2010-07-30 2012-02-02 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen
JP6004045B1 (ja) * 2015-05-27 2016-10-05 横浜ゴム株式会社 空気入りタイヤ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0966705A (ja) * 1995-06-19 1997-03-11 Bridgestone Corp ラジアルタイヤ
JP2001180220A (ja) * 1999-12-24 2001-07-03 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JP2003220806A (ja) * 2002-01-31 2003-08-05 Yokohama Rubber Co Ltd:The 空気入りタイヤおよびその製造方法
JP2005112065A (ja) * 2003-10-06 2005-04-28 Bridgestone Corp 空気入りラジアルタイヤ
JP2007326436A (ja) * 2006-06-07 2007-12-20 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JP2012192826A (ja) * 2011-03-16 2012-10-11 Toyo Tire & Rubber Co Ltd 空気入りラジアルタイヤ
JP2017019461A (ja) * 2015-07-14 2017-01-26 東洋ゴム工業株式会社 空気入りタイヤ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4335661A1 (fr) * 2022-09-09 2024-03-13 Sumitomo Rubber Industries, Ltd. Pneumatique

Also Published As

Publication number Publication date
JPWO2020174848A1 (ja) 2021-11-25
CN113498444A (zh) 2021-10-12
JP7088402B2 (ja) 2022-06-21
CN113498444B (zh) 2022-08-26

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