WO2005068226A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2005068226A1 WO2005068226A1 PCT/JP2004/019075 JP2004019075W WO2005068226A1 WO 2005068226 A1 WO2005068226 A1 WO 2005068226A1 JP 2004019075 W JP2004019075 W JP 2004019075W WO 2005068226 A1 WO2005068226 A1 WO 2005068226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sipes
- tire
- extending
- circumferential main
- pneumatic tire
- Prior art date
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
- 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
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
- B60C11/0309—Patterns comprising block rows or discontinuous ribs further characterised by the groove cross-section
-
- 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
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
-
- 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
- B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/03—Slits in threads
Definitions
- the present invention relates to a pneumatic tire having a tread pattern that improves the performance on ice and snow and the wet performance.
- the tread pattern block is formed of a circumferential main groove extending in the tire circumferential direction and a lug groove extending in the tire width direction.
- Such block patterns are excellent in driveability and controllability, and the sporty image of the appearance is the mainstream of high-performance passenger car patterns.
- snow tires, tires for RV and tires for construction vehicles are used on snow and muddy land (see, for example, JP-A-2002-362114).
- the depth of the sipe added on the block is usually 60% or less of the circumferential main groove depth.
- edge component is simply improved by increasing the strength, the block rigidity is reduced, so that the deformation of the block becomes large and as a result, it does not lead to the performance on ice and snow. At the same time, the durability and uneven wear of the block will be adversely affected.
- the present invention aims to provide a pneumatic tire capable of improving the edge component and improving the performance on ice and snow and the wet performance while maintaining the block rigidity.
- a feature of the present invention is a pneumatic tire having at least two circumferential main grooves extending in the circumferential direction of the tire and having a rib-like land portion formed in the tread. And one side is closed to the rib-like land portion, the other side is opened to the circumferential main groove, and the opening is alternately arranged in the circumferential direction of the tire, and the lug groove extending in the tire width direction is alternately arranged.
- a sipe extending in the tire width direction and a sipe extending in the tire circumferential direction are connected between the lug grooves disposed in the
- a summary of the present invention is a pneumatic tire comprising a first sipe, comprising
- the edge component is improved while maintaining the block rigidity, and the ice is snowed. Performance and Wet performance can be improved.
- At least one of the first sipes has a bending shape of one or more bends, and a depth of 50% or more of the circumferential main groove.
- one block formed by the circumferential main groove, the lug groove, and the first sipe be provided with two second sipes extending in the tire width direction.
- one side of the second sipe is open to the circumferential main groove, and the other side is open to the first sipe.
- the second sipes be linear and have a depth of 50% or more of the circumferential main groove.
- FIG. 1 is a plan view of a tread of a pneumatic tire according to an embodiment of the present invention (part 1).
- FIG. 2 is a plan view of a tread of a pneumatic tire according to an embodiment of the present invention (part 2).
- FIG. 3 is a plan view of a tread of a pneumatic tire according to an embodiment of the present invention (part 3).
- FIG. 4 is a plan view of a tread of a pneumatic tire according to a comparative example.
- the pneumatic tire 10a according to the embodiment of the present invention, as shown in FIG. 1, has circumferential main grooves 20a, 21a, 22a, 23a, which extend in the tread circumferential direction (direction of arrow A) in the tread. Rib-like lands formed by the main grooves 2 Oa, 21a, 22a, 23a, lug grooves 30a, 31a, 32a, 33a extending in the tire width direction (arrow B direction), and connecting between the lag grooves arranged alternately The first sipes 40a, 41a are provided.
- the force provided with four circumferential main grooves 20a, 21a, 22a, 23a may be any number if it is two or more!
- One side of the lug grooves 30a, 31a, 32a, 33a is closed to the rib-like land portion, and the other side is opened to the circumferential main groove 20a, 21a. Further, the openings of the lug grooves 30a, 31a, 32a, 33a are arranged to be different from each other in the tire circumferential direction.
- the first sipe is composed of a sipe 40a extending in the tire width direction and a sipe 41a extending in the tire circumferential direction.
- the sipe 40a links the alternately arranged lug grooves 30a and the lug grooves 3 la
- the sipe 41a connects the alternately arranged lug grooves 3 la and the lug grooves 32a.
- the sipe 40a has one side open on the one circumferential main groove 21a and the other side of the lug groove 30a, and one side open on the other circumferential main groove 22a. Connect with the other side.
- the sipe 41a connects the other side of the lug groove 31a having one side open to the circumferential main groove 22a with the other side of the lug groove 32a having one side opened to the other circumferential main groove 21a.
- At least one of the first sipes 40a and 41a has a bending shape with one or more bends (in FIG. 1, the sipes 41a have a zigzag shape). Furthermore, the first sipes 40a, 41a (in FIG. 1, the sipes 41a) are in contact with one side of the second sipes 50a, 51a, 52a, 53a described later.
- the first sipes 40a, 41a are 50% or more deep than the circumferential main grooves 20a, 21a, 22a, 23a. Furthermore, the width of the first sipes 40a, 41a is about 2 mm.
- one block is formed by the circumferential main groove 21a, the lug grooves 30a and 32a, and the first sipes 40a and 41a (hatched portions in FIG. 1).
- one block is provided with two second sipes 50a, 51a extending in the tire width direction.
- the second sipes 50a, 51a are double-sided sipes, one side of which opens into the circumferential main groove 21a and the other side opens into the first sipes 40a, 41a.
- the second sipes 50a, 51a are linear and have a depth of 50% or more of the circumferential main grooves 20a, 21a, 22a, 23a.
- one block is provided with one third sipe 60a, 61a extending in the tire circumferential direction. Ru.
- the third sipes 60a, 61a are single-sided open sipes and open only to the lug grooves 30a, 33a.
- the pneumatic tire according to the present embodiment may have a tread pattern as shown in FIG. 2 or FIG. 3 in addition to the tread pattern shown in FIG.
- FIG. 2 shows circumferential main grooves 20b, 21b, 22b, 23b extending in the tire circumferential direction (arrow A direction) and lug grooves 30b, 31b, 32b extending in the tire width direction (arrow B direction) in the tread. , 33b, showing a pneumatic tire comprising first sipes 40b, 41b connecting between alternately arranged lug grooves.
- the pneumatic tire in FIG. 2 forms, for example, one block by the circumferential main groove 21b, the lug grooves 30b and 32b, and the first sipes 40b and 41b (hatched portion in FIG. 2).
- At least one of the first sipes 40b, 41b has a bending shape with one or more bends.
- force Sipe 41a is the only zigzag shape.
- Sipes 40b and 41b in FIG. 2 are both zigzag.
- the other shapes, groove depths, groove widths, and the like are the same as in FIG. 1, and thus the description thereof is omitted here.
- FIG. 3 shows circumferential main grooves 20c, 21c, 22c, 23c extending in the tire circumferential direction (arrow A direction) and lug grooves 30c extending in the tire width direction (arrow B direction) in the tread. 31c, 32c, 33c, showing a pneumatic tire comprising first sipes 40c, 41c connecting between mutually arranged lug grooves.
- one block is formed by the circumferential main groove 21c, the lug grooves 30c and 32c, and the first sipes 40c and 41c (hatched portions in FIG. 3).
- the sipe 41c in FIG. 3 connects the lug grooves 31c and 32c with a straight line.
- the other shapes, groove depths, groove widths, etc. are the same as in FIG. 1, so the description is omitted here.
- the pneumatic tire 10a is closed on the tread in the circumferential main groove 21a, 22a, one side cover-like land portion, the other side is open in the circumferential main groove, and the opening is the tire circumference.
- the tire is provided with lug grooves 30a, 31a, 32a extending in the tire width direction alternately arranged in the direction, and first sipes 40a, 41a connecting between the lug grooves arranged alternately.
- Sipes absorb the water that has become a cause of the water film generated between the road surface and the tire, In addition to improving the wet performance and wet performance, the road surface water film is torn by the edge to ensure contact with the road surface, thereby improving the traction and improving the running stability on snow.
- the edge component is improved while maintaining the block rigidity, and the performance on ice and snow and wet performance is achieved. Can be improved.
- the pneumatic tire according to the present embodiment can particularly improve the performance on ice and snow up to the middle stage of wear and the Wet performance from the middle stage to the end of wear.
- the first sipes 40a and 41a has a bending shape of one or more bends, and a depth of 50% or more of the circumferential main grooves 21a and 22a.
- the first sipes 40a, 41a preferably have a zigzag bending shape to connect the lug grooves 30a, 31a, 32a. Further, by setting the depth of the first sipes 40a and 41a to be 50% or more of the circumferential main grooves 21a and 22a, the formation of the water film can be further eliminated and the edge component can be improved.
- one block formed by the circumferential main grooves 21a, 22a and the sipe of the lug grooves 30a, 31a, 32a is provided with two second sipes 50a, 51a extending in the tire width direction. Is desirable. By providing the second sipes 50a and 51a, the formation of the water film can be further eliminated and the edge component can be improved.
- the edge component is further improved and the traction property is improved.
- the second sipes 50a, 51a be linear and have a depth of 50% or more of the circumferential main groove 21a.
- the second sipes 50a, 51a are preferably straight in order to open to the main direction main groove 21a and the first sipes 41a.
- the depth of the second sipes 50a and 51a can be set to 50% or more, the formation of the water film can be further eliminated and the edge component can be improved.
- the width of a normal sipe is about 0.4-0.7 mm, but the first sipe 40 a, 41 a
- the wet performance can be further improved by widening the width of the sipe 40a to about 2 mm.
- Example Examples of the pneumatic tire according to the embodiment of the present invention will be described in detail below.
- one tire of the example to which the present invention is applied and one tire of the comparative example are mounted on a real vehicle (2-D4 car), and the wet performance and wet performance test And the performance on ice and snow were evaluated.
- the tire rim is 7.50 ⁇ 22.5
- the internal pressure is 900 kPa
- the load is a normal load (JATMA (Japan Automobile Tire Association) Year Book 2003 version single wheel)
- the load is equivalent to the maximum load capacity when applying
- the tire size is 11R22.5.
- the tread pattern of the example was set to the shape shown in FIG. 1 described in the embodiment. Also, the depths of the first sipes and the second sipes were 75% of the circumferential main groove.
- circumferential main grooves (direction of arrow A) 120, 121, 122 extending in the tire circumferential direction and the tire width direction (direction of arrow B)
- the pattern has a block 115 (hatched portion in FIG. 4) formed by the lug grooves 170 and 171 extending in the direction.
- block 115 shape both-side opening sipes 150 and 151 opening in the circumferential main groove are formed.
- the depth of the sipes of the comparative example was 55% of the circumferential main groove.
- the turning acceleration was measured on a concrete road surface, with the new product of the comparative example being 100.
- the turning acceleration is the time taken to travel along the circumferential road at a constant speed, and the acceleration toward the center of the circle is calculated.
- the turning acceleration is expressed by the square of the reciprocal of the required time. The larger the turning acceleration, the better the wet performance.
- the water depth in the wet turning test was 3 mm.
- a deceleration index was measured on an ice sheet road, with the new article of the comparative example being 100 in the! /, And so on.
- the deceleration index is expressed as the reciprocal of the time it took for the vehicle to stop after full braking while traveling at a speed of 20 km / h. The larger the deceleration index, the better the performance on ice and snow.
- Table 1 shows the results of the wet turning test.
- the deceleration index is larger in the example at the time of new product. For this reason, it is understood that the tire having the block pattern formed by the circumferential main groove, the lug grooves, and the first sipes improves the performance on ice and snow.
- the pneumatic tire according to the present invention can be suitably used as a vehicle tire in order to improve the performance on ice and snow and the wet performance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/585,937 US7604030B2 (en) | 2004-01-13 | 2004-12-21 | Pneumatic tire with tread having rib shaped land section, lug grooves and sipes |
EP04807432A EP1707405B1 (en) | 2004-01-13 | 2004-12-21 | Pneumatic tire |
NO20063070A NO330323B1 (no) | 2004-01-13 | 2006-07-03 | Luftfylt dekk |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004005979A JP4395381B2 (ja) | 2004-01-13 | 2004-01-13 | 空気入りタイヤ |
JP2004-005979 | 2004-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005068226A1 true WO2005068226A1 (ja) | 2005-07-28 |
Family
ID=34792123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019075 WO2005068226A1 (ja) | 2004-01-13 | 2004-12-21 | 空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7604030B2 (ja) |
EP (1) | EP1707405B1 (ja) |
JP (1) | JP4395381B2 (ja) |
NO (1) | NO330323B1 (ja) |
WO (1) | WO2005068226A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4658579B2 (ja) * | 2004-12-09 | 2011-03-23 | 株式会社ブリヂストン | 空気入りタイヤ |
JP4678680B2 (ja) * | 2005-11-04 | 2011-04-27 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5008021B2 (ja) * | 2006-11-15 | 2012-08-22 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5039377B2 (ja) * | 2006-12-26 | 2012-10-03 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5093880B2 (ja) * | 2007-03-08 | 2012-12-12 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5530059B2 (ja) | 2007-10-30 | 2014-06-25 | 株式会社ブリヂストン | 空気入りタイヤ |
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 |
JP5856787B2 (ja) * | 2011-09-26 | 2016-02-10 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
EP3017963B1 (en) * | 2014-11-06 | 2019-05-29 | Sumitomo Rubber Industries Limited | Pneumatic tire |
USD781220S1 (en) | 2016-03-22 | 2017-03-14 | Bridgestone Americas Tire Operations, Llc | Tire tread |
JP6834205B2 (ja) * | 2016-07-12 | 2021-02-24 | 住友ゴム工業株式会社 | タイヤ |
JP6822095B2 (ja) | 2016-11-24 | 2021-01-27 | 住友ゴム工業株式会社 | タイヤ |
JP7069994B2 (ja) | 2018-04-10 | 2022-05-18 | 住友ゴム工業株式会社 | タイヤ |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03178808A (ja) * | 1989-08-01 | 1991-08-02 | Bridgestone Corp | 空気入りタイヤ |
JPH0569706A (ja) * | 1991-09-10 | 1993-03-23 | Ohtsu Tire & Rubber Co Ltd :The | 空気入りタイヤ |
JPH0655912A (ja) * | 1992-08-07 | 1994-03-01 | Bridgestone Corp | 空気入りタイヤ |
JPH0680002A (ja) * | 1992-09-01 | 1994-03-22 | Yokohama Rubber Co Ltd:The | 重荷重用空気入りラジアルタイヤ |
JP2000225815A (ja) * | 1999-02-09 | 2000-08-15 | Bridgestone Corp | 空気入りタイヤ |
JP2000229505A (ja) * | 1999-02-10 | 2000-08-22 | Bridgestone Corp | 空気入りタイヤ |
JP2000280713A (ja) * | 1999-03-31 | 2000-10-10 | Bridgestone Corp | 空気入りタイヤ |
JP2000326707A (ja) * | 1999-05-20 | 2000-11-28 | Bridgestone Corp | 冬用空気入りタイヤ |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5385189A (en) * | 1991-11-01 | 1995-01-31 | Bridgestone Corporation | Pneumatic tire with paired sides in the tread |
JPH0848114A (ja) * | 1994-08-08 | 1996-02-20 | Bridgestone Corp | 空気入りタイヤ |
JP3860308B2 (ja) * | 1997-09-26 | 2006-12-20 | 株式会社ブリヂストン | オール・シーズン乗用車用空気入りラジアル・タイヤ |
JP3337415B2 (ja) * | 1998-03-04 | 2002-10-21 | 住友ゴム工業株式会社 | 氷上走行に適した空気入りタイヤ |
JP4629918B2 (ja) | 2001-06-12 | 2011-02-09 | 株式会社ブリヂストン | 車両用タイヤ |
DE10309970A1 (de) * | 2003-03-07 | 2004-09-16 | Continental Aktiengesellschaft | Reifenprofil eines Fahrzeugluftreifens |
-
2004
- 2004-01-13 JP JP2004005979A patent/JP4395381B2/ja not_active Expired - Fee Related
- 2004-12-21 US US10/585,937 patent/US7604030B2/en active Active
- 2004-12-21 WO PCT/JP2004/019075 patent/WO2005068226A1/ja not_active Application Discontinuation
- 2004-12-21 EP EP04807432A patent/EP1707405B1/en not_active Not-in-force
-
2006
- 2006-07-03 NO NO20063070A patent/NO330323B1/no not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03178808A (ja) * | 1989-08-01 | 1991-08-02 | Bridgestone Corp | 空気入りタイヤ |
JPH0569706A (ja) * | 1991-09-10 | 1993-03-23 | Ohtsu Tire & Rubber Co Ltd :The | 空気入りタイヤ |
JPH0655912A (ja) * | 1992-08-07 | 1994-03-01 | Bridgestone Corp | 空気入りタイヤ |
JPH0680002A (ja) * | 1992-09-01 | 1994-03-22 | Yokohama Rubber Co Ltd:The | 重荷重用空気入りラジアルタイヤ |
JP2000225815A (ja) * | 1999-02-09 | 2000-08-15 | Bridgestone Corp | 空気入りタイヤ |
JP2000229505A (ja) * | 1999-02-10 | 2000-08-22 | Bridgestone Corp | 空気入りタイヤ |
JP2000280713A (ja) * | 1999-03-31 | 2000-10-10 | Bridgestone Corp | 空気入りタイヤ |
JP2000326707A (ja) * | 1999-05-20 | 2000-11-28 | Bridgestone Corp | 冬用空気入りタイヤ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1707405A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1707405B1 (en) | 2010-04-14 |
EP1707405A4 (en) | 2008-11-05 |
NO20063070L (no) | 2006-09-18 |
EP1707405A1 (en) | 2006-10-04 |
US20070163693A1 (en) | 2007-07-19 |
JP2005199768A (ja) | 2005-07-28 |
NO330323B1 (no) | 2011-03-28 |
JP4395381B2 (ja) | 2010-01-06 |
US7604030B2 (en) | 2009-10-20 |
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