WO2010122805A1 - Pneumatique - Google Patents

Pneumatique Download PDF

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Publication number
WO2010122805A1
WO2010122805A1 PCT/JP2010/002938 JP2010002938W WO2010122805A1 WO 2010122805 A1 WO2010122805 A1 WO 2010122805A1 JP 2010002938 W JP2010002938 W JP 2010002938W WO 2010122805 A1 WO2010122805 A1 WO 2010122805A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
tread
narrow
shoulder
pneumatic tire
Prior art date
Application number
PCT/JP2010/002938
Other languages
English (en)
Japanese (ja)
Inventor
卓 大河原
柴田　賢一
Original Assignee
株式会社ブリヂストン
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 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2010122805A1 publication Critical patent/WO2010122805A1/fr

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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
    • B60C11/0304—Asymmetric patterns
    • 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
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • B60C11/033—Tread patterns characterised by special properties of the tread pattern by the void or net-to-gross ratios of the patterns
    • 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
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes

Definitions

  • the present invention relates to a pneumatic tire, and more particularly to a pneumatic tire that achieves both steering stability on ice and on a dry road surface.
  • a narrow groove extending in the tread circumferential direction is provided in the tread portion, and this narrow groove increases the drag of the side skid of the tire, so that contact during cornering is possible.
  • the tire extends in the tread circumferential direction to each land portion located on the outermost side of the tire.
  • the narrow grooves are provided with the same groove volume, the land part that will be located outside the vehicle and the land part that will be located inside will be particularly dry on ice due to the difference in contact length. It was difficult to make the functions of the narrow groove on the road surface straight and turn.
  • an object of the present invention is to improve driving and braking performance on ice without reducing steering stability on a dry road surface, particularly in a pneumatic tire to be used with a negative camber. It is to provide a pneumatic tire that can be used.
  • the pneumatic tire according to the present invention defines a shoulder block row by disposing a shoulder circumferential groove and a plurality of lateral grooves extending from the shoulder circumferential groove to the tread side edge on the outermost side in the tread width direction.
  • the tread portion is formed with an asymmetric pattern, and the shoulder block rows have narrow grooves extending in the circumferential direction of the tread and are positioned on the inner side of the vehicle in a mounting position on the vehicle.
  • the groove volume of the groove is larger than the groove volume of the narrow groove located outside the vehicle.
  • the “groove volume of the narrow groove” is determined from the length, depth, width and number of the narrow grooves.
  • the groove depth is an industrial standard effective in the region where tires are produced and used.
  • JATMA Joint Automobile Tire Association
  • ETRTO European Tire and Rim Technical Organization
  • STANDARDDS MANUAL In the United States, tires are assembled to rims specified in TRA (THE TIRE and RIM ASSOCIATION INC.) YEAR BOOK, etc., and the tread treads are filled with the maximum air pressure as defined by JATMA standards.
  • the depth measured from the bottom to the groove bottom.
  • the narrow groove is terminated in the middle of the block.
  • a plurality of the fine grooves are provided, and the fine grooves are arranged so as to be offset from each other in the tread circumferential direction.
  • the pneumatic tire of the present invention is configured such that the groove volume of the narrow groove that is located inside the vehicle is larger than the groove volume of the narrow groove that is located outside the vehicle in a mounting posture on the vehicle.
  • the lateral force is greatly applied during cornering, so the biting characteristics of the narrow groove edge of the ground contact surface to the ice surface are increased.
  • the land portion that is located inside the vehicle is grounded mainly when traveling straight, so that it is possible to increase the response at a small steering angle and the limit speed at the time of turning. As a result, the handling stability on ice and on a dry road surface can be improved.
  • FIG. 1 is a partial development view of a tread pattern showing one embodiment of the pneumatic tire of the present invention. Since the reinforcing structure inside the tire is the same as that of a general radial tire or bias tire, illustration is omitted.
  • the tread pattern shown in FIG. 1 is an asymmetric pattern, and the tire shown in FIG. 1 is used in a posture in which the right side is the vehicle mounting inner side.
  • 1 indicates the entire tread surface
  • the tread surface 1 includes a plurality of circumferential grooves extending in the tread circumferential direction, two center circumferential grooves 2 provided with a tire equator line apart in the figure,
  • a shoulder circumferential groove 3 adjacent to each side portion of the center circumferential groove 2 is disposed.
  • a central land portion 4 is partitioned between two circumferential grooves adjacent to each other, in the figure, between two center circumferential grooves 2, and an intermediate land portion 5 is defined between the center circumferential groove 2 and the shoulder circumferential groove 3.
  • each shoulder land portion 6 is defined between the shoulder circumferential groove 3 and the tread side edge.
  • the central land portion 4 is provided with a lateral groove 7 extending from the center circumferential groove 2 on the inner side of the vehicle inclining with respect to the tread circumferential direction and ending within the central land portion. Further, in the intermediate land portion 5, a plurality of intermediate blocks 9 are defined by lateral grooves 8 that are inclined with respect to the tread circumferential direction and open to the center circumferential groove 2 and the shoulder circumferential groove 3.
  • a plurality of shoulder blocks 11 are defined by the lateral grooves 10 that are inclined with respect to the circumferential direction of the tread and extend across the shoulder land portion 6 from each of the shoulder circumferential grooves 3, and open to the tread side edge. To do.
  • sipe 12 extending obliquely with respect to the tread circumferential direction is provided so as to open in the groove.
  • the negative surface area is increased and the block surface area is increased.
  • the block surface area is reduced by increasing the negative rate in order to ensure drainage when wet.
  • the shoulder block 11 at the outermost side in the tread width direction is further provided with two narrow grooves extending in the tread circumferential direction and parallel to each other in the figure, and the groove volume of the narrow groove 13 on the inner side of the mounting is set as follows. It is made larger than the groove volume of the narrow groove 14 on the outside of the mounting.
  • the groove width of the narrow groove 13 on the inner side of mounting is 1.5 mm or less
  • the groove depth is 2 mm
  • the groove width of the narrow groove 14 on the outer side of mounting is 1.5 mm or less
  • the groove depth is 1 mm.
  • the number of narrow grooves 13 on the vehicle mounting inner side is equal to or greater than the number of narrow grooves 14 on the vehicle mounting outer side.
  • the narrow grooves 13 on the vehicle mounting inner side are parallel to each other.
  • the three extending grooves 14 on the outer side of the vehicle are two extending in parallel to each other.
  • the tire with negative camber has a long contact length when traveling straight on the inside of the vehicle, so it can prevent drainage during straight travel and side slip at a small steering angle. Stiffness can be secured on the outside to counter lateral force and side slip during cornering.
  • a plurality of narrow grooves 13 and 14 are provided, and these narrow grooves are arranged so as to be offset from each other in the tread circumferential direction, so that the change in the rigidity of the block in the tread circumferential direction is reduced, and the grounding property is reduced. It is possible to cope with a change in rigidity while securing the above.
  • the narrow groove 15 extending in the tread circumferential direction can be provided not only in the shoulder block 11 but also in the intermediate block 9.

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

Abstract

L'invention concerne un pneumatique utilisé avec un carrossage négatif à entraînement et à capacité de freinage sur les surfaces verglacées améliorés tout en maintenant une stabilité de direction sur une surface de route sèche. L'invention concerne également une rainure d'épaulement circonférentielle (3) et une pluralité de rainures transversales s'étendant à partir de la rainure d'épaulement circonférentielle (3) vers un bord de bande de roulement sur chacune des extrémités latérales de la bande de roulement pour former un motif de bande de roulement asymétrique qui comprend des lignes de blocs d'épaulement (11). Chacun des blocs d'épaulement comprend de minces rainures circonférentielles, le volume de la rainure mince (13) sur le côté intérieur, en position montée, étant supérieur à celui de la rainure mince (14) sur le côté extérieur.
PCT/JP2010/002938 2009-04-22 2010-04-22 Pneumatique WO2010122805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-104392 2009-04-22
JP2009104392A JP2010254049A (ja) 2009-04-22 2009-04-22 空気入りタイヤ

Publications (1)

Publication Number Publication Date
WO2010122805A1 true WO2010122805A1 (fr) 2010-10-28

Family

ID=43010930

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/002938 WO2010122805A1 (fr) 2009-04-22 2010-04-22 Pneumatique

Country Status (2)

Country Link
JP (1) JP2010254049A (fr)
WO (1) WO2010122805A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100116393A1 (en) * 2008-11-10 2010-05-13 Toyo Tire & Rubber Co., Ltd. Pneumatic Tire
CN108790611A (zh) * 2017-04-27 2018-11-13 东洋橡胶工业株式会社 充气轮胎
CN113015631A (zh) * 2018-12-19 2021-06-22 横滨橡胶株式会社 充气轮胎

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5149957B2 (ja) * 2010-12-14 2013-02-20 住友ゴム工業株式会社 空気入りタイヤ
EP3022069B1 (fr) * 2013-07-16 2019-12-04 Pirelli Tyre S.p.A. Pneumatique de voiture
DE112015001947T5 (de) * 2014-04-22 2017-01-05 The Yokohama Rubber Co., Ltd. Luftreifen
JP6930241B2 (ja) * 2017-06-19 2021-09-01 横浜ゴム株式会社 空気入りタイヤ
JP7126869B2 (ja) * 2018-06-06 2022-08-29 Ｔｏｙｏ Ｔｉｒｅ株式会社 空気入りタイヤ
JP6787388B2 (ja) * 2018-12-19 2020-11-18 横浜ゴム株式会社 空気入りタイヤ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04349004A (ja) * 1990-07-04 1992-12-03 Sumitomo Rubber Ind Ltd 空気入りタイヤ
JP2000219015A (ja) * 1999-02-01 2000-08-08 Bridgestone Corp 空気入りタイヤ
JP2002307912A (ja) * 2001-04-17 2002-10-23 Toyo Tire & Rubber Co Ltd 空気入りラジアルタイヤ
JP2003285610A (ja) * 2002-03-28 2003-10-07 Sumitomo Rubber Ind Ltd 空気入りタイヤ
JP2004026141A (ja) * 2002-05-08 2004-01-29 Bridgestone Corp タイヤ
JP2005297880A (ja) * 2004-04-15 2005-10-27 Bridgestone Corp 空気入りタイヤ
JP2008273451A (ja) * 2007-05-02 2008-11-13 Yokohama Rubber Co Ltd:The 空気入りタイヤ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3396020B2 (ja) * 1997-02-14 2003-04-14 住友ゴム工業株式会社 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
JPH04349004A (ja) * 1990-07-04 1992-12-03 Sumitomo Rubber Ind Ltd 空気入りタイヤ
JP2000219015A (ja) * 1999-02-01 2000-08-08 Bridgestone Corp 空気入りタイヤ
JP2002307912A (ja) * 2001-04-17 2002-10-23 Toyo Tire & Rubber Co Ltd 空気入りラジアルタイヤ
JP2003285610A (ja) * 2002-03-28 2003-10-07 Sumitomo Rubber Ind Ltd 空気入りタイヤ
JP2004026141A (ja) * 2002-05-08 2004-01-29 Bridgestone Corp タイヤ
JP2005297880A (ja) * 2004-04-15 2005-10-27 Bridgestone Corp 空気入りタイヤ
JP2008273451A (ja) * 2007-05-02 2008-11-13 Yokohama Rubber Co Ltd:The 空気入りタイヤ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100116393A1 (en) * 2008-11-10 2010-05-13 Toyo Tire & Rubber Co., Ltd. Pneumatic Tire
US8544513B2 (en) * 2008-11-10 2013-10-01 Toyo Tire & Rubber Company Co., Ltd. Pneumatic tire with tread having circumferential sipes
CN108790611A (zh) * 2017-04-27 2018-11-13 东洋橡胶工业株式会社 充气轮胎
CN113015631A (zh) * 2018-12-19 2021-06-22 横滨橡胶株式会社 充气轮胎

Also Published As

Publication number Publication date
JP2010254049A (ja) 2010-11-11

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