WO2015133054A1 - Bandage pneumatique - Google Patents

Bandage pneumatique Download PDF

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Publication number
WO2015133054A1
WO2015133054A1 PCT/JP2015/000326 JP2015000326W WO2015133054A1 WO 2015133054 A1 WO2015133054 A1 WO 2015133054A1 JP 2015000326 W JP2015000326 W JP 2015000326W WO 2015133054 A1 WO2015133054 A1 WO 2015133054A1
Authority
WO
WIPO (PCT)
Prior art keywords
sipe
tire
circumferential
width direction
extending
Prior art date
Application number
PCT/JP2015/000326
Other languages
English (en)
Japanese (ja)
Inventor
祥吾 森居
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 WO2015133054A1 publication Critical patent/WO2015133054A1/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
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
    • 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
    • B60C11/0306—Patterns comprising block rows or discontinuous ribs
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0341—Circumferential grooves
    • B60C2011/0344—Circumferential grooves provided at the equatorial plane
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
    • B60C2011/0372—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane with particular inclination angles
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0381—Blind or isolated grooves
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0386—Continuous ribs
    • B60C2011/0393—Narrow ribs, i.e. having a rib width of less than 8 mm
    • B60C2011/0395—Narrow ribs, i.e. having a rib width of less than 8 mm for linking shoulder blocks

Definitions

  • the present invention relates to a pneumatic tire.
  • this sipe has a narrow groove structure, it can be considered that it contributes to water discharge, but it cannot be said that the overall water discharge performance is sufficient.
  • An object of the present invention made in view of the above point is to provide a pneumatic tire with improved drainage performance.
  • a pneumatic tire according to the present invention is a pneumatic tire in which a land portion is defined by a plurality of main grooves extending continuously in a tire circumferential direction on a tread surface, and at least one of the above-described pneumatic tires is provided.
  • the land portion has one end that opens into one of the main grooves on both sides that define the land portion and extends in the tire width direction, the other end that terminates in the land portion, and one end that is the one A widthwise sipe that opens in the main groove and extends in the tire width direction, the other end terminates in the land portion, and a circumferential sipe that extends in the tire circumferential direction and both ends terminate in the land portion.
  • the other end of the directional sipe is connected to one end of the circumferential sipe, the other end of the lateral groove is connected to the circumferential sipe, and the other end of the circumferential sipe is connected to the lateral groove. More tire circumference beyond Characterized in that it terminates at a position extending direction. According to the pneumatic tire of the present invention, drainage performance can be improved.
  • the lateral groove is inclined with respect to the tire width direction. According to this configuration, the drainage performance of the tire is further improved.
  • the width direction sipe is inclined with respect to the tire width direction. According to this configuration, the drainage performance of the tire is further improved.
  • a plurality of sipe coupling bodies formed by coupling the width direction sipe and the circumferential direction sipe are arranged in the tire circumferential direction, and the two sipe couplings adjacent to each other in the tire circumferential direction.
  • the bodies are preferably arranged spaced apart from each other. According to such an arrangement, occurrence of uneven wear of the tire can be suppressed.
  • tread means a narrow groove having groove widths such that opposing groove wall surfaces come into contact with each other at a tire ground contact portion.
  • this "tire contact portion” is attached to the applied rim and filled with the specified internal pressure, and comes into contact with the road surface when a load corresponding to the maximum load capacity is applied to the tire stationaryly placed in a vertical posture on the road surface.
  • a tread portion that is a part in the circumferential direction of the tread surface is referred to.
  • extending in the tire width direction includes not only extending along the tire width direction but also including extending at an angle with respect to the tire width direction.
  • extending in the tire circumferential direction includes not only extending along the tire circumferential direction but also including extending at an angle with respect to the tire circumferential direction.
  • the shape of the sipe shall be measured in a no-load state in which the tire is mounted on the applicable rim and filled with air of the specified internal pressure.
  • “applicable rim” is an industrial standard effective in the area where tires are produced and used.
  • JATMA Joint Automobile Tire Association
  • JATMA YEAR BOOK in Europe
  • ETRTO The European Tire and
  • RIM Technical Organization's STANDARDDS MANUAL US TRA (The Tire and Rim Association, Inc.) YEAR BOOK, etc.
  • Standard rims in applicable sizes ETRTO STANDARDDS MANO OUR, TR Design (Rim).
  • the “specified internal pressure” refers to the filling air pressure (maximum air pressure) corresponding to the maximum load capacity of the tire, which is specified according to the tire size, described in the above JATMA YEAR BOOK, etc.
  • air here can be replaced with nitrogen gas or other inert gas.
  • a pneumatic tire with improved drainage performance can be provided.
  • FIG. 2 is a development view in which a part of the tread pattern of the pneumatic tire according to the embodiment of the present invention is enlarged.
  • a pneumatic tire 100 includes one central main groove 1 that extends in the tire circumferential direction at the center of the tread surface and both sides of the central main groove 1 in the tire width direction. And a side main groove 2 extending in the tire circumferential direction.
  • the central main groove 1 and the two side main grooves 2 define two central land portions 3 and two side land portions 4 on the tread surface.
  • the configuration of the main groove and the land portion is not limited to this embodiment, and the main groove and the land portion can be configured by various numbers of main grooves and land portions.
  • the central main groove 1 and the side main grooves 2 extend linearly along the tire circumferential direction, but may be configured to extend in a zigzag shape, a wave shape, a crank shape, or the like.
  • the central main groove 1 extends continuously in the tire circumferential direction at the center portion of the tread surface including the tire equator C.
  • the central main groove 1 plays a role of efficiently discharging water guided from a central lateral groove 5 and a central sipe connector 6 described later in the circumferential direction of the tire.
  • the side main grooves 2 are two grooves extending in the tire circumferential direction at positions that are substantially equidistant from the central main groove 1 on both sides in the width direction of the tire.
  • the side main grooves 2 serve to efficiently discharge water guided from side lateral grooves 8 and side sipes 7, 9 described later in the circumferential direction of the tire.
  • main groove constituting the present invention is the above-described central main groove 1 and side main groove 2 in the present embodiment.
  • the central land portion 3 is an area defined by the central main groove 1 and the side main grooves 2.
  • the central land portion 3 is formed with a central lateral groove 5 extending in the tire width direction, a central sipe connector 6 extending in the tire width direction and the circumferential direction, and a side sipe 7 extending in the tire width direction.
  • the “land portion” constituting the present invention is the central land portion 3 in the present embodiment.
  • the central lateral groove 5 has one end opening in the central main groove 1 and extending in the tire width direction, and the other end terminating in the central land portion 3.
  • the central lateral groove 5 preferably extends while being inclined in the circumferential direction with respect to the tire width direction, and the inclination angle is more preferably in the range of 20 degrees to 40 degrees. This inclination has an effect of facilitating the flow of water sucked from the central land portion 3 through the central lateral groove 5.
  • the central lateral groove 5 terminates at a position slightly closer to the side main groove 2 than the center in the width direction of the central land portion 3.
  • the circumferential sipe 6b constituting the central sipe connector 6 is connected at the end position of the central lateral groove 5 and further ends at a position extending in the tire circumferential direction.
  • the “lateral groove” constituting the present invention is the central lateral groove 5 in the present embodiment.
  • the central sipe connector 6 is configured by connecting a width direction sipe 6a extending in the tire width direction and a circumferential direction sipe 6b extending in the tire circumferential direction.
  • the width-direction sipe 6a and the circumferential-direction sipe 6b are smoothly connected via an arc portion. This configuration improves drainage.
  • one end of the width direction sipe 6 a opens in the central main groove 1 and extends in the tire width direction, and the other end is connected to one end of the circumferential direction sipe 6 b in the central land portion 3. It ends there.
  • the width direction sipe 6a extends while being inclined in the circumferential direction with respect to the tire width direction.
  • the inclination angle is preferably in the range of 40 degrees to 60 degrees. This inclination has an effect of facilitating the flow of water sucked from the central land portion 3 through the central sipe connector 6.
  • the direction in which the width direction sipe 6a is inclined with respect to the tire width direction is substantially the same as the central lateral groove 5.
  • the present invention is not limited thereto, and the inclination angle that the central lateral groove 5 has is more. It can be large.
  • One end of the circumferential sipe 6b is connected to the width sipe 6a in the central land portion 3 and ends there.
  • the other end of the circumferential sipe 6b terminates at a position extending beyond the connecting position with the central lateral groove 5 and further extending in the tire circumferential direction.
  • the circumferential sipe 6b extends along the tire circumferential direction, but may be slightly inclined in the tire width direction.
  • the inclination angle is preferably within 5 degrees with respect to the tire circumferential direction, for example.
  • the end position of the other end of the circumferential sipe 6b is selected such that the central sipe connectors 6 arranged adjacent to each other in the tire circumferential direction are separated from each other and do not overlap.
  • the side sipe 7 has one end opened in the side main groove 2 and the other end terminated in the central land portion 3.
  • the side sipe 7 extends while being slightly inclined in the circumferential direction with respect to the tire width direction. In the illustrated example, this inclination angle is substantially the same as the inclination angle in the central lateral groove 5, but may be different. Further, the side sipe 7 is disposed at a position further extended from the terminal position on the central land portion 3 of the central lateral groove 5. By this side sipe 7, water on the central land portion 3 can be guided into the sipe, and the drainage performance of the tire is improved.
  • the side land portion 4 is an area formed by the side main groove 2 and the tread end TE.
  • the tread end TE referred to here is a tread that comes into contact with the road surface when a tire that is assembled to an applicable rim and filled with air at a specified internal pressure is rolled with a load corresponding to the maximum load capacity applied. This is the end of the portion in the tire width direction.
  • the lateral land portion 4 includes lateral lateral grooves 8 extending in the tire width direction, side sipe 9 extending in the tire width direction, side circumferential sipe 10 extending intermittently in the tire circumferential direction, and in the tire width direction. End lateral grooves 11 extending and end sipes 12, 13 extending in the tire width direction are formed.
  • the lateral lateral groove 8 has one end opening in the lateral main groove 2 and extending in the tire width direction, and the other end terminating in the lateral land portion 4.
  • the width of the lateral lateral groove 8 gradually decreases as the distance from the lateral main groove 2 increases.
  • the length of the lateral lateral groove 8 is about one fifth of the width of the lateral land portion 4.
  • the lateral lateral grooves 8 extend slightly inclined in the circumferential direction with respect to the tire width direction. This inclination has an effect of facilitating the flow of water sucked into the lateral lateral grooves 8 through the lateral lateral grooves 8.
  • the lateral lateral groove 8 is disposed at a position further extended from the terminal position on the central land portion 3 of the central lateral groove 5. By this lateral lateral groove 8, more water on the lateral land portion 4 can be guided into the groove, and the drainage performance is further improved.
  • the side sipe 9 has one end opened in the side main groove 2 and the other end terminated in the side land portion 4.
  • the side sipes 9 extend slightly inclined in the circumferential direction with respect to the tire width direction. Note that this inclination angle is substantially the same as the inclination angle in the central lateral groove 5 in the illustrated example.
  • the side circumferential sipe 10 is a sipe extending in the tire circumferential direction at a position slightly closer to the side main groove 2 than the tread end TE on the side land portion 4.
  • the lateral circumferential sipe 10 extends along the tire circumferential direction in this example.
  • the side circumferential direction sipe 10 smoothly guides the water on the side land portion 4 in the tire circumferential direction, and improves the drainage performance of the tire.
  • the side circumferential direction sipe 10 is provided with two or more intermittently in the tire circumferential direction, the side land part 4 is not parted by the side circumferential direction sipe 10. With this configuration, an increase in rolling resistance caused by energy loss due to deformation of the side land portion 4 can be suppressed to a smaller extent than when the side circumferential sipe 10 is continuous in the tread circumferential direction.
  • the end lateral groove 11 is provided so as to extend from one end of the lateral circumferential sipe 10 in the tire width direction beyond the tread end TE.
  • the end lateral grooves 11 extend in the tire width direction from every other side circumferential sipe 10 arranged in the tire circumferential direction.
  • the groove width of the end lateral groove 11 is substantially the same as the groove width of the central lateral groove 5.
  • One end of the end lateral groove 11 is disposed at an intersection position between a straight line further extended from the end position on the central land portion 3 of the central lateral groove 5 and one end of the side circumferential sipe 10.
  • the inclination angle of the end lateral groove 11 with respect to the tire width direction gradually decreases as it approaches the tread end TE.
  • the end lateral groove 11 serves to discharge water guided by the side circumferential sipe 10 from the tread end TE.
  • the end sipes 12 and 13 are sipes disposed at substantially equal intervals on both sides of the end lateral groove 11 in the tire circumferential direction.
  • One end of each of the end sipes 12 and 13 is located at a position slightly closer to the tread end TE than the center in the tire width direction of the side land portion 4 and is located away from the side circumferential sipe 10.
  • the end sipes 12, 13 extend from the one end beyond the tread end TE in the tire width direction.
  • the end sipes 12 and 13 are sipes parallel to the end lateral grooves 11.
  • the end sipes 12 and 13 also serve to guide the water on the side land portion 4 into the sipe and to discharge the water from the tread end TE to the outside.

Landscapes

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

Abstract

L'invention concerne un bandage pneumatique qui présente une excellente performance d'évacuation de l'eau qui est obtenue alors que la performance sur neige et la performance sur la glace sont conservées. La présente invention concerne un bandage pneumatique (100) ayant, sur la surface d'appui de la bande de roulement, des méplats (3) définis et formés par des rainures principales (1, 2) qui s'étendent de manière continue dans la direction circonférentielle du pneu. Au moins l'un des méplats (3) comporte des rainures latérales (5) qui s'étendent dans le sens de la largeur du pneu, les rainures latérales (5) comportant chacune une extrémité ouverte jusqu'à une rainure principale (1) parmi les rainures principales (1, 2) sur les deux côtés, les rainures principales (1, 2) définissant et formant les méplats (3), les rainures latérales (5) ayant chacune également l'autre extrémité qui se termine dans le méplat (3) ; des lamelles (6a) s'étendant dans le sens de la largeur du pneu, les lamelles (6a) ayant chacune une extrémité ouverte jusqu'à la rainure principale (1), les lamelles (6a) ayant chacune également l'autre extrémité se terminant dans le méplat (3) ; et des lamelles circonférentielles (6b) s'étendant dans la direction circonférentielle du pneu et ayant chacune des extrémités opposées qui se terminent dans le méplat (3). Le bandage pneumatique est caractérisé en ce que : l'autre extrémité de chacune des lamelles s'étendant dans le sens de la largeur (6a) est raccordée à une extrémité de chacune des lamelles circonférentielles (6b) ; l'autre extrémité de chacune des rainures latérales (5) est reliée à la lamelle circonférentielle (6b) ; et l'autre extrémité de la lamelle circonférentielle (6b) passe à travers la position où la lamelle circonférentielle (6b) ainsi que la rainure latérale (5) sont raccordées, et s'étend de manière circonférentielle jusqu'à une position où l'autre extrémité de la lamelle circonférentielle (6b) se termine.
PCT/JP2015/000326 2014-03-05 2015-01-26 Bandage pneumatique WO2015133054A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-042985 2014-03-05
JP2014042985A JP6317140B2 (ja) 2014-03-05 2014-03-05 空気入りタイヤ

Publications (1)

Publication Number Publication Date
WO2015133054A1 true WO2015133054A1 (fr) 2015-09-11

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ID=53822751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/000326 WO2015133054A1 (fr) 2014-03-05 2015-01-26 Bandage pneumatique

Country Status (3)

Country Link
JP (1) JP6317140B2 (fr)
CN (2) CN204547597U (fr)
WO (1) WO2015133054A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3130483A1 (fr) * 2014-05-29 2017-02-15 Bridgestone Corporation Pneu
CN115298042A (zh) * 2020-04-03 2022-11-04 横滨橡胶株式会社 轮胎

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6317140B2 (ja) * 2014-03-05 2018-04-25 株式会社ブリヂストン 空気入りタイヤ
JP2017052330A (ja) * 2015-09-07 2017-03-16 株式会社ブリヂストン 空気入りタイヤ
JP2017052329A (ja) * 2015-09-07 2017-03-16 株式会社ブリヂストン 乗用車用空気入りタイヤ
JP6627426B2 (ja) * 2015-10-30 2020-01-08 住友ゴム工業株式会社 空気入りタイヤ
JP6740617B2 (ja) * 2016-01-21 2020-08-19 住友ゴム工業株式会社 空気入りタイヤ
JP6790443B2 (ja) * 2016-05-10 2020-11-25 横浜ゴム株式会社 空気入りタイヤ
JP6850695B2 (ja) * 2017-07-14 2021-03-31 株式会社ブリヂストン 自動二輪車用空気入りタイヤ
JP7230591B2 (ja) * 2019-03-05 2023-03-01 住友ゴム工業株式会社 タイヤ
JP2021049791A (ja) * 2019-09-20 2021-04-01 株式会社ブリヂストン タイヤ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013039899A (ja) * 2011-08-19 2013-02-28 Bridgestone Corp 空気入りタイヤ
JP2013107492A (ja) * 2011-11-21 2013-06-06 Bridgestone Corp タイヤ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200971030Y (zh) * 2006-11-28 2007-11-07 横滨橡胶株式会社 充气轮胎
JP4488083B2 (ja) * 2008-04-11 2010-06-23 横浜ゴム株式会社 空気入りタイヤ
JP5266307B2 (ja) * 2010-12-27 2013-08-21 住友ゴム工業株式会社 空気入りタイヤ
JP6317140B2 (ja) * 2014-03-05 2018-04-25 株式会社ブリヂストン 空気入りタイヤ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013039899A (ja) * 2011-08-19 2013-02-28 Bridgestone Corp 空気入りタイヤ
JP2013107492A (ja) * 2011-11-21 2013-06-06 Bridgestone Corp タイヤ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3130483A1 (fr) * 2014-05-29 2017-02-15 Bridgestone Corporation Pneu
EP3130483A4 (fr) * 2014-05-29 2017-05-10 Bridgestone Corporation Pneu
US10195904B2 (en) 2014-05-29 2019-02-05 Bridgestone Corporation Pneumatic tire
CN115298042A (zh) * 2020-04-03 2022-11-04 横滨橡胶株式会社 轮胎
CN115298042B (zh) * 2020-04-03 2024-03-08 横滨橡胶株式会社 轮胎

Also Published As

Publication number Publication date
JP2015168302A (ja) 2015-09-28
JP6317140B2 (ja) 2018-04-25
CN104890449A (zh) 2015-09-09
CN204547597U (zh) 2015-08-12
CN104890449B (zh) 2018-02-23

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