WO2004041556A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2004041556A1 WO2004041556A1 PCT/JP2003/014143 JP0314143W WO2004041556A1 WO 2004041556 A1 WO2004041556 A1 WO 2004041556A1 JP 0314143 W JP0314143 W JP 0314143W WO 2004041556 A1 WO2004041556 A1 WO 2004041556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- row
- land
- groove
- tire
- central
- 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
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
- B60C11/1384—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block corners
-
- 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
- B60C11/11—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
-
- 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
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C11/1218—Three-dimensional shape with regard to depth and extending direction
-
- 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
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
-
- 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
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
- B60C11/1392—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block edges
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- 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
-
- 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
- Y10S152/902—Non-directional tread pattern having no circumferential rib and having blocks defined by circumferential grooves and transverse grooves
-
- 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
- Y10S152/903—Non-directional tread pattern having non-circumferential transverse groove following smooth curved path
Definitions
- the present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire that can improve wet performance without sacrificing steering stability.
- the pneumatic tire's tread is provided with a circumferential groove in order to obtain jet performance.
- a tire with a center rib pattern that has a center rib extending in the tire circumferential direction on the tire equatorial plane has excellent steering stability compared to a center group pattern tire that has a circumferential groove on the tire equatorial plane. It has been known.
- a tire provided with a lateral groove in a center rib is generally used in order to prevent a decrease in wet drainage (see, for example, Japanese Patent Application Laid-Open No. H11-911315). See.)
- An object of the present invention is to provide a pneumatic tire capable of improving jet performance without sacrificing steering stability in view of the above fact. Disclosure of the invention The invention according to claim 1 is characterized in that at least a pair of circumferential grooves extending along the tire circumferential direction are arranged on the tread, and the tread has at least a central land row on a tire equatorial plane side; It is divided into a plurality of land rows with both side land rows arranged on the outer side in the tire axial direction, and a plurality of lateral grooves extending in the tire axial direction are arranged in at least the central land row and the both land rows in the tire circumferential direction.
- a pneumatic tire wherein at least the grooves arranged in the central land row extend at least 15% or more of the width in the tire axial direction of the central land row from both ends of the land toward the inside of the land.
- the central land portion row is formed into a block or a false block, and the block or the false block of the central land portion row is provided near the corner on one side in the tire circumferential direction facing the circumferential groove.
- Toward the main groove Forming a chamfered portion for increasing a depth near with the width direction on both sides of the central land portion row to along the tire circumferential direction is uneven, it is characterized in that.
- At least a pair of circumferential grooves extending along the tire circumferential direction are arranged in the tread, and the tread is arranged at least in a central land row on a tire equatorial plane side and a central land row. Since it is divided into the land rows on both sides, which are arranged on the outside in the tire axial direction, basic jet performance is obtained.
- the central land row is provided with lateral grooves that extend at least 15% of the width of the central land row in the tire axial direction from both ends of the land toward the interior of the land. Since the row is blocked or falsely blocked, the jet performance is improved. If the length of the lateral groove is less than 15% of the width of the central land row in the axial direction of the tire, it will be insufficient for the jet performance. .
- the lateral grooves are preferably arranged at substantially constant intervals in the circumferential direction of the evening so as to prevent uneven drainage on the periphery.
- a chamfer that gradually increases in depth toward the circumferential main groove is formed, so that the chamfer is formed between the land tread and the road surface. Water can be drained to the main groove side in the circumferential direction, so that the water drainage property can be improved.
- the chamfer drains water, so there is no need to use a lot of lateral grooves, and it is possible to secure high land rigidity in the central land row and also to secure steering stability.
- the chamfered portion is formed and the vicinity of both sides in the width direction of the central land row is uneven along the tire circumferential direction, it is possible to improve the jet drainage without unevenness on the tire circumference.
- the pneumatic tire according to claim 1 has the above-described configuration, and thus has an excellent effect that wet performance can be improved without sacrificing steering stability.
- the invention according to claim 2 is the pneumatic tire according to claim 1, wherein the chamfered portion of the central land row has an obtuse angle near the obtuse angle of the block or the fake block in a tread plan view.
- the tread in plan view has a substantially trapezoidal shape with the top side facing the circumferential main groove side and the bottom side arranged substantially parallel to the tire circumferential direction, and at a constant angle to the tread surface. It is characterized by having an inclined plane shape.
- the chamfered portion By forming the chamfered portion into a substantially trapezoidal shape and disposing the upper side on the circumferential main groove side, the chamfered area becomes smaller on the circumferential main groove side.
- the ground contact area of the circumferential main groove adjacent part of the central land row increases, so the bias of the ground contact part as a whole central land row Become smaller.
- substantially parallel to the tire circumferential direction includes within 10 ° with respect to the tire circumferential direction.
- the pneumatic tire according to claim 2 has the above-described configuration, the unevenness of the ground contact portion in the entire central land row is reduced, and the occurrence of uneven wear can be suppressed. Has the effect.
- the invention according to claim 3 is the pneumatic tire according to claim 1 or claim 2, wherein the lateral groove on the one side in the tire axial direction and the lateral groove on the other side in the tire axial direction of the central land row are disposed. Are connected by a first narrow groove having a width smaller than that of the lateral groove.
- the rigidity of the land on the central land row is increased around the circumference. Can be made uniform.
- the groove width of the first narrow groove is preferably 2 mm or less.
- the pneumatic tire according to claim 3 has the above-described configuration, and thus has an excellent effect that the land rigidity of the central land row can be made uniform on the periphery.
- the invention according to claim 4 is the pneumatic tire according to any one of claims 1 to 3, wherein the chamfered portion of the central land portion row has a width in the tire axial direction of the central land. Set within the range of 5 to 30% of the width of the row in the tire axial direction, and set within the range of 5 to 50% of the groove depth of the adjacent circumferential main groove at the lower end on the circumferential groove side. It is characterized by that.
- the width in the axial direction of the tire is less than 5% of the width in the axial direction of the central land row, the grooved portion (the area of the part that is no longer grounded due to chamfering) will be insufficient. Wet drainage decreases.
- the axial width of the tire in the chamfered section of the central land row exceeds 30% of the axial width of the central land row, the contact area becomes too small and steering stability is reduced.
- the chamfered portion of the central land row has a tire axial width set within a range of 5 to 30% of the tire axial width of the central land row.
- the chamfered portion of the central land row has the lower end portion on the circumferential groove side set within a range of 5 to 50% of the groove depth of the adjacent circumferential main groove.
- the pneumatic tire according to claim 4 has the above-described configuration, and thus has an excellent effect that a balance between wet drainage performance and steering stability can be achieved.
- the invention according to claim 5 is the pneumatic tire according to any one of claims 1 to 4, wherein the non-chamfered portion other than the chamfered portion and the chamfered portion in the central land portion row.
- the side wall surface of the non-chamfered portion on the chamfered portion side is formed at approximately 90 ° with respect to the tread surface.
- substantially 90 ° means 90 ° ⁇ 10 °. If the angle of the non-chamfered part on the side of the chamfered part with respect to the tread is extremely acute (less than 80 °), the rigidity of the land part at the boundary is insufficient and uneven wear is likely to occur.
- the side wall surface of the non-chamfered portion on the chamfered portion side is formed at approximately 90 ° with respect to the tread surface.
- the pneumatic tire according to claim 5 has the above configuration. Therefore, it has an excellent effect that it can balance uneven wear and snow performance.
- the invention according to claim 6 is the pneumatic tire according to any one of claims 1 to 5, wherein the chamfered portion on one side in the tire axial direction of the central land portion row and the tire axial direction.
- the chamfered part on the other side is arranged so that at least a part thereof is opposed to each other.
- the pneumatic tire according to claim 6 has the above-described configuration, and thus has an excellent effect that the wet drainage property and the rigidity of the land portion can be equalized on the left and right of the central land row.
- the invention according to claim 7 is the pneumatic tire according to any one of claims 1 to 6, wherein, in the central land row, the chamfers are circumferentially adjacent to the chamfers.
- the non-chamfered portion other than the non-chamfered portion protrudes to the adjacent circumferential groove side, and the amount of protrusion of the chamfered portion in the tire axial direction with respect to the end of the non-chamfered portion on the circumferential main groove side is
- the width is set in the range of 2.5 to 40% of the groove width of the adjacent circumferential groove.
- the rigidity of the land part decreases when the land part is chamfered.However, in this central land part row, the mating part with the chamfered part protrudes to the adjacent circumferential groove side than the non-chamfered part. This compensates for the decrease in land rigidity.
- the amount of protrusion of the chamfered portion in the tire axial direction is set within a range of 2.5 to 40% of the groove width of the adjacent circumferential groove.
- the invention according to claim 8 is the pneumatic tire according to claim 7, wherein the chamfered portion is formed only on a portion protruding to the circumferential groove side from the non-chamfered portion adjacent in the circumferential direction.
- the chamfered portion is provided only at a portion of the central land row that protrudes toward the circumferential groove side, the circumferential step of the central land row is reduced.
- the abrasion resistance and uneven wear resistance of the central land row can be improved.
- the invention according to claim 9 is the pneumatic tire according to claim 7 or claim 8, wherein in the central land portion row, a portion protruding toward a circumferential groove side and a groove wall on a tire axial direction side are provided.
- the groove wall on the tire axial direction side of the non-chamfered portion is connected to the groove bottom of the circumferential groove at substantially the same position in the tire axial direction position.
- a groove wall on a tire axial direction side of a portion protruding to a circumferential groove side and a groove wall on a tire axial direction side of a non-chamfered part are:
- substantially the same position means that the deviation in the tire axial direction is within 1.0 mm.
- the slope of the groove wall on the tire axial direction side of the non-chamfered part becomes gentler than the groove wall on the axial side of the part protruding toward the circumferential groove side, so the land part of the central land row Rigidity can be increased.
- the pneumatic tire according to claim 9 has the above configuration, and thus has an excellent effect that the flow of water in the circumferential groove can be made smooth.
- the pneumatic tire according to claim 9 since the pneumatic tire according to claim 9 has the above-described configuration, in the land rows on both sides, an excellent effect of increasing the rigidity of the land and suppressing heel-and-toe wear can be obtained. Have. In addition, there is an excellent effect that the pattern noise can be reduced and the jet performance can be improved as compared with the case where no chamfering is performed.
- the invention according to claim 10 is the pneumatic tire according to any one of claims 1 to 9, wherein the lateral grooves of the both land portions rows have a portion on the tire equatorial plane side narrow.
- the formed narrow portion, the remaining trad end side is a wide portion formed to be wide, and the both-side land portion row is within a forming range of the narrow portion, starting from a virtual extension line of a tread side edge of the wide portion.
- a flat chamfer that is inclined at a constant angle toward the adjacent circumferential groove side and has a substantially rectangular shape whose tread plan view shape is long along the horizontal groove.
- a part of the lateral groove on the tire equatorial plane side is formed to be narrow, so that the rigidity of the land parts in both land rows is increased, and the movement of the block edge on both sides of the narrow part is reduced, and the heel and ⁇ Toe wear can be suppressed.
- the pattern noise decreases because the air volume in the groove decreases.
- the wide portion is inclined at a fixed angle from the virtual extension of the tread-side edge toward the adjacent circumferential groove side as a starting point, and the trad plan shape is changed. Since a substantially chamfered portion having a long rectangular shape is formed along the lateral groove, the groove area is widened, and wet performance is improved as compared with a case where no chamfer is performed.
- the pneumatic tire according to claim 10 has the above-described configuration, so that it is possible to secure uniform performance on the left and right sides of the tread and to ensure high wet drainage. Has the effect.
- the second land row It has the excellent effect of increasing the rigidity of the land and suppressing heel 'and' toe wear. Further, it has an excellent effect that the pattern noise can be reduced and the wet performance can be improved as compared with the case where no chamfering is performed.
- the direction of the chamfered portion in the tire circumferential direction is opposite between the land portions on both sides and the second land portion row, so that noise and uneven wear resistance are not deviated depending on the rotation direction.
- the invention according to claim 11 is the pneumatic tire according to claim 10, wherein the central land row is disposed on a tire equatorial plane, and the central land row and each of both side land rows are arranged as follows.
- a second land portion row defined by the circumferential groove is disposed between the second land portion rows, and the lateral groove of the second land portion row is formed to have a narrow portion in which a part on the tire equatorial plane side is formed to have a narrow width.
- the tread end side is a wide portion formed wide, and the second land portion row is adjacent to the circumferential groove adjacent to the tread-side edge of the wide portion on the virtual extension line of the tread side edge within the formation range of the narrow portion.
- the chamfers in the row are in the circumferential direction of the tire. To are formed in the opposite direction, it is characterized in that.
- the land sections are evenly arranged on the left and right, and uniform performance can be secured on the left and right.
- the tread Since the second land row is divided between the central land row and both land rows by a circumferential groove, the tread has a pattern of four main grooves, ensuring high wet drainage.
- the part of the lateral groove on the tire equatorial plane side is formed narrower than the other parts, so the land rigidity of the second land row is increased and the movement of the block edges on both sides of the narrow part is reduced. Heel and toe wear can be suppressed.
- the air volume in the groove is reduced, so that the power noise is reduced.
- the tread side of the wide part A chamfer that is inclined at a fixed angle toward the adjacent circumferential groove starting from the virtual extension line of the edge toward the adjacent circumferential groove, and has a flat chamfer with a tred planar view shape that is long along the horizontal groove, has a groove area. And the wet performance is improved compared to the case without chamfering.
- the flat chamfered portion when the flat chamfered portion is oriented in the same direction in the tire circumferential direction on both side land portions and the second land portion row, the stepping edge and the kicking edge are chamfered on the block depending on the rotation direction. Noise or uneven wear resistance depending on the rotational direction.
- the direction of the flat chamfered portion in the tire circumferential direction is changed. Since the opposite direction is used for both the land part and the second land part row, noise and uneven wear resistance are not deviated depending on the rotation direction.
- the invention according to claim 12 is the pneumatic coupling according to claim 10 or 11, wherein the chamfered portions of the both land portion rows are arranged so that lower end portions thereof are adjacent to each other in the circumferential direction.
- the groove depth is set within a range of 5 to 30% of the depth of the groove, and the width in the tire axial direction is set within a range of 15 to 60% of the width of the tire axial direction of the land portions on both sides. It is characterized by:
- the lower end is positioned at the depth of 5
- the positions of the lower ends of the chamfers of both side land sections are set within a range of 5 to 30% of the depth of the adjacent circumferential groove.
- the width in the tire axial direction of the chamfered portions on both side land portion rows within a range of 15 to 60% of the width in the tire axial direction of both side land portion rows.
- the pneumatic tire according to claim 12 has the above-described configuration, the pneumatic tire has an excellent effect that the land portion rigidity of the block or the false block can be made uniform.
- the invention according to claim 13 is the pneumatic tire according to any one of claims 1 to 12, wherein the block or the fake block in the land row is larger than the lateral groove. It is characterized by being divided into a plurality of sub-blocks by a second narrow groove having a narrow width.
- the land rigidity of the block or the false block can be adjusted. It can be made uniform.
- the groove width of the second narrow groove is preferably 2 mm or less.
- the pneumatic tire according to claim 13 has the above-described configuration, the apparent land portion rigidity increases upon contact with the ground, and it is possible to prevent the block or the false block from falling down. It has an excellent effect that it can be done.
- the invention according to claim 14 is the pneumatic tire according to claim 13, wherein the second narrow groove has at least two bent portions at an intermediate portion in the depth direction. , It is characterized.
- the direction of the edge effect of the second narrow groove does not change from the time of new article to the end of wear, and the edge effect is constant. Is obtained.
- the second narrow groove does not change its longitudinal direction with depth.
- the direction of the edge effect of the second narrow groove is new because the longitudinal direction of the second narrow groove that appears on the tread surface does not change in the process of wearing the tire. No change from time to end of wear.
- FIG. 1 is a plan view of a tread of a pneumatic tire according to an embodiment of the present invention.
- FIG. 2 (A) is an enlarged plan view of a central land row.
- FIG. 2 (B) is a cross-sectional view of the central land row of Fig. 2 (A) taken along the line 2 (B) 1-2 (B) .
- Fig. 2 (C) is a cross-sectional view of the central land row of Fig. 2 (A).
- FIG. 3 is a cross-sectional view taken along line 2 (C)-1 (C).
- FIG. 3 is a cross-sectional view of a central land row according to another embodiment.
- Figure 4 (A) is an enlarged plan view of the second land row.
- Fig. 4 (B) is a cross-sectional view of the second land row of Fig. 4 (A), taken along line 4 (B)-4 (B).
- Figure 5 (A) is an enlarged plan view of both land rows.
- FIG. 5 (B) is a cross-sectional view taken along line 5 (B)-5 (B) of the land rows on both sides of Fig. 5 (A) .
- Fig. 5 (C) is a view of the land rows on both sides of Fig. 5 (A).
- 5 (C) is a sectional view taken along line 5 (C).
- FIG. 6 is a plan view of a tread of a pneumatic tire according to another embodiment of the present invention.
- FIG. 7 is a plan view of the tread of the pneumatic tire according to the second embodiment of the present invention.
- FIG. 8 is a sectional view taken along line AA of the tread shown in FIG.
- FIG. 9 is a plan view of a tread of a pneumatic tire according to a comparative example.
- FIG. 10 is a plan view of a tread of a pneumatic tire according to a conventional example.
- the tread 12 of the pneumatic tire 10 of the present embodiment has a tire circumferential direction (arrow A direction (in the present embodiment, the rotational direction of the tire in this embodiment) on both sides of the equatorial plane CL. ), And the direction of arrow B.
- a central circumferential main groove 14 is formed extending along), and a side portion extending along the tire circumferential direction is provided outside the central circumferential main groove 14 in the tire axial direction.
- a circumferential main groove 16 is formed.
- the pneumatic tire 10 of the present embodiment has the same structure as a general radial tire, and a description of the internal structure will be omitted.
- a central land row 18 partitioned by a pair of central circumferential main grooves 14 is arranged on the tire equatorial plane CL of the tread 12.
- a short central land row lateral groove extending from the central circumferential main groove 14 inward to the land and terminating in the land. 20 has been formed.
- the central land row horizontal groove 20 on the left side of the drawing is inclined upward and ends before the tire equatorial plane CL
- the central land row horizontal groove 20 on the right side of the drawing is It is inclined upward and terminates just before the tire equatorial plane CL.
- the central land row horizontal groove 20 on the left side of the drawing and the central land row horizontal groove 20 on the right side of the drawing are located approximately on the respective extension lines, and the central land row horizontal groove 20 on the left side of the drawing and the right side of the drawing. It is connected to the central land row horizontal groove 20 by an inclined sipe 22 extending along the extension line.
- the central land row 18 of this embodiment is formed into a false block by arranging a plurality of central land row lateral grooves 20 on both sides.
- the fake block here is different from a block whose entire circumference is surrounded by a groove that does not close when touching down, and a part (30% or less of the block circumference) is continuous with other land parts.
- a block-like shape that is connected to another land part through a sipe or a narrow groove that closes when touching the ground. Refers to the land part surrounded by the chain line.
- the axial length L 1 of the central groove row 20 of the present embodiment is 27% of the axial width W 1 of the central land row 18, but at least the tire axial width W As long as it is 15% or more of 1, cross the central land row 18 as shown in Fig. 6 (that is, 100% of the axial width W 1 of the central land row 18). Is also good.
- the central land portion row chamfered portion 24 is inclined at a constant angle 01 toward the tire axial direction and the adjacent central circumferential main groove 14 in the present embodiment.
- the shape of the tread in plan view is a trapezoidal shape with the upper side facing the central circumferential main groove 14 side.
- central land portion row chamfered portion 24 only needs to gradually increase in depth substantially toward the tire axial direction and the adjacent central circumferential main groove 14, and the inclination direction is in relation to the tire axial direction. May be slightly inclined (within 10 °).
- the shape of the central land portion row chamfered portion 24 in a plan view of the trad may be a shape other than the trapezoidal shape.
- the central land portion row chamfered portion 24 must be formed within the central land portion row / groove 20 within the tire axial width range, and as shown in FIG. W 2 Is preferably in the range of 5 to 30% of the tire axial width W1 of the central land row 18.
- the chamfering start position (the bottom side of the trapezoid) coincides with the axial position of the end 20 E of the central land portion row lateral groove 20 in the tire axial direction.
- the direction width W2 is set to 30% of the tire axial direction width W1 of the central land row 18.
- the chamfering start position (the bottom side of the trapezoid) of the central land portion row chamfered portion 24 is parallel to the tire circumferential direction, but slightly inclined (10 °) with respect to the tire circumferential direction. Up to).
- the depth dl of the lower end (the upper side of the trapezoid) of the central circumferential main groove 14 of the central land portion row chamfered portion 24 is The groove depth D1 is preferably in the range of 5 to 50%.
- the depth d 1 of the lower end of the central circumferential main groove 14 of the central land portion row chamfered portion 24 is 30 times the groove depth D 1 of the adjacent central circumferential main groove 14. Set to%.
- the angle of the side wall surface 26S to the tread surface is set to 90 °, but as shown in FIG. 3, the angle ⁇ 2 of the side wall surface 26S to the tread surface is 90 °. It should be 10 °.
- the right central cross row row chamfer section 24 and the left central land row row chamfer section 24 are arranged so that a part of each chamfering start position faces each other.
- a part of the central land portion row chamfered portion 24 projects more toward the central circumferential main groove 14 side than the non-chamfered portion 26.
- the amount of protrusion t in the tire axial direction of the central land portion row chamfered portion 24 with respect to the end on the side of the central circumferential main groove 14 of the non-chamfered portion 26 is
- the groove width W3 is preferably in the range of 2.5 to 40%.
- the axially projecting amount t of the central land portion row chamfered portion 24 is set to 20% of the groove width W3 of the central circumferential main groove 14.
- the central land row 18 also has a circumferential sipe 28 extending from the terminal end 20 E of the central land row lateral groove 20 to the central land row chamfer 24 along the tire circumferential direction.
- a gentle slope sipe 30 is formed to connect from the terminal end 20 E of the row lateral groove 20 to the terminal end of the circumferential sipe 28 on the opposite side beyond the tire equatorial plane CL.
- a second mating section 32 divided by a central circumferential main groove 14 and a side circumferential main groove 16.
- the second land row 32 is divided into a plurality of second blocks 36 with a plurality of second land row horizontal grooves 34 crossing in the tire axial direction.
- the second cross-section lateral groove 34 has a part on the tire equatorial plane CL side narrower than the outer side in the tire axial direction.
- the narrow portion of the second land row horizontal groove 34 is defined as the second land row narrow portion 34A, and the other portions are defined as the second land grooves. Call it the wide column part 3 4 B.
- the second land row narrow groove 34 of the second land row narrow portion 34 A forming range includes the second land row.
- a second land portion row chamfered portion 38 is formed which is inclined at a fixed angle toward the second land portion row narrow portion 34A.
- the tread plane shape of the second land portion row chamfered portion 38 has a substantially rectangular shape that is long along the second land portion row lateral groove 34.
- the depth d 2 of the lower end of the second land portion row chamfer 38 is the groove depth D 1 of the adjacent central circumferential main groove 14 (see FIG. 2 (B)).
- the width W 4 of the second land portion row chamfered portion 38 in the tire axial direction is preferably within a range of 15% to 60% of the tire axial width W 5 of the second block 36.
- the width is set to 52% of the width W5 of the second block 36 in the tire axial direction.
- the second block 36 is formed with two transverse sipes 40 that cross the second block 36 in the tire axial direction.
- the both-side land row 42 is formed with a plurality of both-side land row lateral grooves 44 crossing in the tire axial direction and divided into a plurality of shoulder blocks 46.
- both side land row lateral grooves 44 a portion on the tire equatorial plane CL side is formed narrower than the outer side in the tire axial direction.
- the narrow part of the both-side land row lateral groove 44 is replaced by a two-sided narrow part row narrow part 4 4A, and others. Is called the wide row part on both sides 4 4 B.
- a part of one side surface in the tire circumferential direction of the shoulder block 46 is formed in order to form the land portion row width narrow portion 44A on both sides.
- both side row rows 42 include both side land row narrow sections 44 A (protruding portions of shoulder blocks 46), and both side row row wide sections 44 B treads. Starting from an imaginary extension of the side edge, both side land row chamfers 48 are formed, which are inclined at a fixed angle toward both side land row narrow portions 44 A.
- the tread planar shape of the both-side land row chamfered portion 48 is substantially rectangular along the both-side land row horizontal groove 44.
- the depth d3 of the lower end of the both-side land row chamfered portion 48 is 5 to 30% of the groove depth D2 of the adjacent side circumferential main groove 16 In the present embodiment, it is set to 10% of the groove depth D 2 of the side circumferential main groove 16.
- the width W 6 in the tire axial direction of the row chamfered portion 48 on both sides of the land is the shoulder block It is preferably within a range of 15 to 60% of the tire axial width W7 of 46, and in the present embodiment, it is set to 30% of the tire axial width W7 of the shoulder block 46.
- the width W 7 in the tire axial direction of the shoulder block 46 is a dimension measured along the tire axial direction from the end of the side circumferential main groove 16 to the ground contact end 12 E. .
- the shoulder block 46 has a first axial sipe 50 traversing the shoulder block 46 in the tire axial direction, and is formed substantially in parallel with the first axial sipe 50.
- the second axial sipe 52 that terminates near the center of the block toward 1 2E and the middle of the first axial sipe 50 that extends in the tire circumferential direction from the end of the second axial sipe 52 A circumferential short sipe 54 is formed.
- the tread edge 1 2E means that the pneumatic tire 10 is mounted on a standard rim specified in the J ATMA YEAR BOOK (2000 edition, Japan Automobile Tire Association Standard), and the J ATMA YEAR BOOK Applicable size: Grounding when the maximum load capacity is applied by filling the internal pressure of 100% of the air pressure (maximum air pressure) corresponding to the maximum load capacity in the plying (bold load in the internal pressure-one load capacity correspondence table) Refers to the outermost end of the portion in the tire axial direction.
- the first axial sipe 50 and the second axial sipe 52 each have a half of the middle part in the depth direction when viewed in a section perpendicular to the sipe longitudinal direction. It is bent at two places.
- the longitudinal direction of the first axial sipe 50 and the second axial sipe 52 does not change depending on the depth.
- the pair of central circumferential main grooves 14 and the pair of side circumferential main grooves 16 extending along the tire circumferential direction are arranged on the tread 12, so that the tread 1 and 2 become four main groove patterns, and basically high wet performance can be obtained.
- the central land row 18 is located on the tire equatorial plane CL, and the second land row 3 2 Further, since the land rows 42 on both sides are arranged outside the land, and the land areas are evenly arranged on the left and right of the tire equatorial plane CL, uniform performance can be secured on the left and right of the tire equatorial plane CL.
- a plurality of central land row lateral grooves 20 are provided on both sides of the central land row 18 at substantially constant intervals, and the length L 1 of the central land row lateral grooves 20 in the tire axial direction L1 is the tire of the central land row lateral grooves 20. Wet performance is further improved because it is set to 30% of the axial width W1. Also, since the central land row horizontal grooves 20 are provided at substantially constant intervals, drainage by the horizontal grooves 20 on the periphery is not uneven.
- the central land row 18 has a central land row chamfer 24 formed at an obtuse portion adjacent to the central land row lateral groove 20. The water between the two can be drained to the adjacent central circumferential main groove 14 to improve the drainage of the jet.
- the contact area of the central land row 18 is reduced, so that a high contact pressure can be secured on the contact surface. Therefore, an optimum contact pressure can be obtained by changing the area of the central land portion row chamfer 24.
- the central land portion row chamfered portion 24 in a trapezoidal shape and arranging the upper side on the central circumferential main groove 14 side, the chamfered area becomes smaller on the central circumferential main groove 14 side.
- the contact area of the central circumferential main groove 14 of the central land row 18 increases, so the central land row 1 (8)
- the bias of the grounding portion becomes smaller as a whole.
- the central land row 18 has an inclined sipe 22 that connects the central land row lateral groove 20 on one side in the tire axial direction and the central land row lateral groove 20 on the other side in the tire axial direction.
- Row Circumferential sipe 28 extending from tire end 20 E of lateral groove 20 in the circumferential direction of tire, also in the center Circumferential sipe opposite tire equatorial plane CL from terminal 20 E of land groove lateral groove 20 E Since the gentle slope sipe 30 connected to 28 is formed, the land rigidity of the central land row 18 is uniform on the circumference.
- the width W 2 of the central land portion row chamfered portion 24 in the tire axial direction becomes less than 15% of the width T 1 of the central land portion row 18 in the axial direction of the tire, the grooved portion (beveled by grounding and grounding) (The area of the lost portion) is insufficient, and the wet drainage is reduced.
- the depth d1 of the lower end of the central land portion row chamfered portion 24 becomes less than 5% of the groove depth D1 of the central circumferential main groove 14, the volume of the grooved portion becomes insufficient and the wet Drainage is reduced.
- the side wall surface 26 S of the non-chamfered portion 26 is set at 90 ° to the tread surface, it is possible to obtain a high edge effect required for snow performance while suppressing uneven wear. I can do it.
- the central land row chamfer 24 on one side in the tire axial direction and the central land row chamfer 24 on the other side in the tire axial direction are trapezoidal shapes of each other. Since a part of the bottom of the shape is arranged so as to face each other, the drainage of the water and the rigidity of the land portion are equal on the left and right sides of the central land row 18.
- the central land main groove 14 side of the second land row row groove 34 was set as the second land row narrow section 34A, so the second land row row groove 3 4 (second land row)
- the movement of the block edges on both sides of the second land row narrow part 34 A is reduced, and the heel and toe wear is suppressed in the second land row 32 I can do it.
- the pattern noise is reduced due to a decrease in the air polymer in the groove.
- the second land row row chamfered section 38 was formed within the formation range of the narrow section 34A of the second land row row. The jet performance is improved as compared with.
- transverse sipe 40 is provided in the second land row 32 to make the land rigidity uniform.
- the depth d2 at the lower end of the second land portion row chamfered portion 38 is less than 5% of the groove depth D1 of the central circumferential main groove 14, the chamfering effect is hardly obtained.
- the second land portion row chamfered portion 38 when the tire axial width W4 is less than 15% of the tire axial width W5 of the second land portion row 32, the second land portion row wide portion 3 is relatively large. As the amount of B increases, heel and toe wear is more likely to occur.
- the second land portion row chamfered portion 38 when the tire axial width W4 exceeds 80% of the tire axial width W5 of the second land portion row 32, the second land portion row / groove 3 4 Due to the lack of the overall air volume of the, the drainage of the water drops.
- both land row rows 42 both sides of the main row lateral grooves 16 of the land row row lateral grooves 4 4 were narrowed to 4A on both sides, so both land row rows 4 2 (shoulder block 4) 6)
- both land row rows 4 2 shoulder block 4) 6
- the movement of the block edges on both sides of the narrow part 44 A on both sides of the land part is reduced, and the heel 'and' toe wear can be suppressed in the land part row 42 on both sides .
- the lateral groove 44 on both sides provided with the narrow portion 44 A on both sides of the land part has a reduced pattern noise because the air volume in the groove is reduced.
- both land row row chamfered sections 48 were formed within the formation area of both side land row narrow sections 44A, so that the groove area was widened and no chamfering was performed. Teet performance is improved.
- first and second axial sipes 50 and 52 and the short circumferential sipe 54 are provided in the land rows 42 on both sides to make the rigidity of the land uniform.
- the first axial sipe 50 and the second axial sipe 52 become Since the opposed groove walls between the bent portions are in strong contact with each other and the apparent land portion rigidity is increased, the shoulder block 46 is prevented from falling down, and uneven wear of the shoulder block 46 is suppressed.
- first axial sipe 50 and the second axial sipe 52 do not change their direction in the process of wearing the shoulder block 46, the edge effect of the sipe portion is not changed. Does not change.
- the width W 6 in the axial direction of the tire at the both-side land row When the width in the tire axial direction W7 of No. 2 is less than 15% of the width W7 on both sides, the width of the wide portion 4B on both sides is relatively large, and heel-and-toe wear is likely to occur.
- the direction of the second land portion row chamfered portion 38 in the tire circumferential direction and the direction of the both land portion row chamfered portion 48 in the tire circumferential direction are set in opposite directions.
- the uneven wear resistance does not vary depending on the rotation direction.
- the tread pattern has a point symmetrical shape, but may have a symmetrical shape with respect to the tire equatorial plane CL.
- FIGS. 1 and 2 A second embodiment of the present invention will be described with reference to FIGS.
- the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- the pneumatic tire 60 of the present embodiment is different from the first embodiment in the size of the central land portion row chamfered portion 24.
- the central land portion row chamfered portion 24 of the present embodiment is formed only at a portion protruding from the end of the non-chamfered portion 26 adjacent in the circumferential direction on the side of the central circumferential main groove 14.
- a groove wall 24 S on the tire axial direction portion protruding toward the central circumferential main groove 14 side, and a tire shaft of the non-chamfered portion 26
- the direction-side groove wall 26S is connected to the groove bottom of the central circumferential main groove 14 at the same position in the tire axial direction position.
- the central land row 18 since only the portion of the central land row 18 protruding toward the central circumferential main groove 14 is the central land row chamfered section 24, the central land row The step in the circumferential direction of 18 can be reduced, and the wear resistance and uneven wear resistance of the central land row 18 can be improved.
- a groove wall 24 S on the tire axial direction which is a portion protruding toward the central circumferential main groove 14, and a groove wall 2 on the tire axial direction of the non-chamfered part 26. 6 S is connected to the groove bottom of the central circumferential main groove 14 at the same position in the tire axial position at the same position.
- the slope of the groove wall 26S of the non-chamfered portion 26 becomes gentler than that of the groove wall 24S, the rigidity of the land portion of the central land row 18 can be increased.
- a pneumatic tire according to an example to which the present invention is applied a pneumatic tire according to a comparative example, and a pneumatic tire according to a conventional example are prepared, and a wet hydroplaning test, and dry steering stability are performed. A sex test was performed.
- Dry steering stability test A test tire (size: PSRP23.5 / 75R15, tread width: 1888 mm, internal pressure: 230 kPa) is attached to an actual vehicle (load is equivalent to 2 passengers). Then, the test driver ran sports circuits on the dry circuit course in various driving modes. The evaluation was a feeling evaluation, and the index was expressed as an index with the conventional example being 100. The higher the index value, the better the performance.
- test tire will be described below.
- a central circumferential main groove 114 extending along the tire circumferential direction is formed on both sides of the tire equator plane CL of the tread 112.
- a side circumferential main groove 116 extending in the tire circumferential direction is formed.
- a central land row 118 that is defined by a pair of central circumferential main grooves 114 is arranged.
- central land row horizontal grooves 120 extending from the central circumferential main groove 1 14 toward the inside of the land, and bending and terminating in the land. I have.
- the central land row horizontal groove 120 on the left side of the drawing and the central land row horizontal groove 120 on the right side of the drawing are defined by the first central sipe 122 and the second central sipe 124 of the central central row. Linked ing.
- a central mutsube row third sipe 126 is formed on the circumferential side of the central land row horizontal groove 120.
- the second land row 1332 is formed with a plurality of second land row lateral grooves 134 crossing in the tire axial direction and is divided into a plurality of second blocks 1336.
- a first land row first sipe 140 and a second land row second sipe 144 are formed.
- both side land rows 1 42 are arranged.
- the both-side land row 144 has a plurality of both-side land row lateral grooves 144 crossing in the tire axial direction and is divided into a plurality of shoulder blocks 144.
- both side row row sipes 150 extending in the tire axial direction are formed.
- 1 1 2 E is the tread edge 1 2 E.
- the width, groove wall angle, and groove depth of the groove portion of the conventional pneumatic tire are as shown in Table 2 below.
- the pneumatic tire of the example to which the present invention is applied can improve the dry steering stability without sacrificing the wet hydroplaning performance.
- INDUSTRIAL APPLICABILITY As described above, the pneumatic tire according to the present invention is suitable for a case where it is mounted on a four-wheeled vehicle or the like, and it is desired to improve jet performance without sacrificing steering stability.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03810624A EP1566291B1 (en) | 2002-11-06 | 2003-11-06 | Pneumatic tire |
US10/534,019 US7347238B2 (en) | 2002-11-06 | 2003-11-06 | Pneumatic tire with tread including chamfer portions |
JP2004549622A JP4295728B2 (ja) | 2002-11-06 | 2003-11-06 | 空気入りタイヤ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002322834 | 2002-11-06 | ||
JP2002-322834 | 2002-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004041556A1 true WO2004041556A1 (ja) | 2004-05-21 |
Family
ID=32310399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/014143 WO2004041556A1 (ja) | 2002-11-06 | 2003-11-06 | 空気入りタイヤ |
Country Status (6)
Country | Link |
---|---|
US (1) | US7347238B2 (ja) |
EP (1) | EP1566291B1 (ja) |
JP (1) | JP4295728B2 (ja) |
CN (1) | CN100509448C (ja) |
ES (1) | ES2366437T3 (ja) |
WO (1) | WO2004041556A1 (ja) |
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JP2006001346A (ja) * | 2004-06-16 | 2006-01-05 | Bridgestone Corp | 空気入りタイヤ |
WO2006082696A1 (ja) * | 2005-02-03 | 2006-08-10 | Bridgestone Corporation | 空気入りタイヤ |
EP1918130A1 (en) * | 2005-08-23 | 2008-05-07 | Kabushiki Kaisha Bridgestone | Pneumatic tire |
JP2009029249A (ja) * | 2007-07-26 | 2009-02-12 | Bridgestone Corp | 空気入りタイヤ |
US7762298B2 (en) * | 2005-07-22 | 2010-07-27 | Bridgestone Corporation | Pneumatic tire with tread having first type of sipes and second type of sipes |
JP2010167857A (ja) * | 2009-01-21 | 2010-08-05 | Toyo Tire & Rubber Co Ltd | 空気入りタイヤ |
JP2016097777A (ja) * | 2014-11-20 | 2016-05-30 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2016168911A (ja) * | 2015-03-12 | 2016-09-23 | 株式会社ブリヂストン | 空気入りタイヤ |
CN106042785A (zh) * | 2015-04-17 | 2016-10-26 | 住友橡胶工业株式会社 | 充气轮胎 |
JP2018083543A (ja) * | 2016-11-24 | 2018-05-31 | 住友ゴム工業株式会社 | タイヤ |
CN108349325A (zh) * | 2015-11-12 | 2018-07-31 | 株式会社普利司通 | 轮胎 |
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US7874331B2 (en) * | 2007-03-02 | 2011-01-25 | The Goodyear Tire & Rubber Company | Pneumatic tire with tread having chamfer located in notch |
JP5160870B2 (ja) * | 2007-12-10 | 2013-03-13 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
JP4600790B2 (ja) * | 2008-06-17 | 2010-12-15 | 横浜ゴム株式会社 | 空気入りタイヤ |
FR2954220B1 (fr) * | 2009-12-17 | 2012-03-23 | Michelin Soc Tech | Pneu a faible resistance au roulement. |
JP5478284B2 (ja) | 2010-01-29 | 2014-04-23 | 株式会社ブリヂストン | タイヤ |
AU2011309648B2 (en) * | 2010-09-30 | 2015-02-05 | Bridgestone Corporation | Pneumatic tyre |
US20150047763A1 (en) * | 2012-03-27 | 2015-02-19 | Ronald Hobart Thompson | Wet and snow traction design for a tire tread and solution for pull under torque therefor |
JP5447748B1 (ja) * | 2012-08-20 | 2014-03-19 | 横浜ゴム株式会社 | 空気入りタイヤ |
WO2015060127A1 (ja) * | 2013-10-22 | 2015-04-30 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US10926586B2 (en) | 2013-12-26 | 2021-02-23 | Bridgestone Americas Tire Operations, Llc | Tire tread having a flexible gate apparatus |
JP6065033B2 (ja) * | 2015-01-29 | 2017-01-25 | 横浜ゴム株式会社 | 空気入りタイヤ |
CN106080046B (zh) * | 2015-04-30 | 2019-07-16 | 住友橡胶工业株式会社 | 充气轮胎 |
EP3176006B1 (en) * | 2015-11-24 | 2018-06-20 | Sumitomo Rubber Industries Limited | Tire |
EP3450215B1 (en) * | 2016-04-28 | 2020-05-13 | Bridgestone Corporation | Tire |
JP6759703B2 (ja) * | 2016-05-19 | 2020-09-23 | 住友ゴム工業株式会社 | 空気入りタイヤ及びその製造方法 |
JP6828496B2 (ja) * | 2017-02-17 | 2021-02-10 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP6828495B2 (ja) * | 2017-02-17 | 2021-02-10 | 横浜ゴム株式会社 | 空気入りタイヤ |
US10836215B2 (en) * | 2017-06-27 | 2020-11-17 | Sumitomo Rubber Industries, Ltd. | Tire |
JP2019131081A (ja) * | 2018-01-31 | 2019-08-08 | Toyo Tire株式会社 | 空気入りタイヤ |
US10807416B2 (en) | 2018-02-23 | 2020-10-20 | The Goodyear Tire & Rubber Company | Tire tread |
US11472232B2 (en) | 2019-12-18 | 2022-10-18 | The Goodyear Tire & Rubber Company | Tire with tread elements including dual angled chamfer |
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- 2003-11-06 WO PCT/JP2003/014143 patent/WO2004041556A1/ja active Application Filing
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JP2006001346A (ja) * | 2004-06-16 | 2006-01-05 | Bridgestone Corp | 空気入りタイヤ |
WO2006082696A1 (ja) * | 2005-02-03 | 2006-08-10 | Bridgestone Corporation | 空気入りタイヤ |
JP2006213175A (ja) * | 2005-02-03 | 2006-08-17 | Bridgestone Corp | 空気入りタイヤ |
US8800618B2 (en) | 2005-02-03 | 2014-08-12 | Bridgestone Corporation | Pneumatic tire having lug grooves |
JP4602782B2 (ja) * | 2005-02-03 | 2010-12-22 | 株式会社ブリヂストン | 重荷重用空気入りタイヤ |
US7762298B2 (en) * | 2005-07-22 | 2010-07-27 | Bridgestone Corporation | Pneumatic tire with tread having first type of sipes and second type of sipes |
EP1918130A4 (en) * | 2005-08-23 | 2009-06-10 | Bridgestone Corp | PNEUMATIC |
US8322386B2 (en) | 2005-08-23 | 2012-12-04 | Kabushiki Kaisha Bridgestone | Pneumatic tire with tread having rib with chamfered wing portions |
EP1918130A1 (en) * | 2005-08-23 | 2008-05-07 | Kabushiki Kaisha Bridgestone | Pneumatic tire |
JP2009029249A (ja) * | 2007-07-26 | 2009-02-12 | Bridgestone Corp | 空気入りタイヤ |
JP2010167857A (ja) * | 2009-01-21 | 2010-08-05 | Toyo Tire & Rubber Co Ltd | 空気入りタイヤ |
JP2016097777A (ja) * | 2014-11-20 | 2016-05-30 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2016168911A (ja) * | 2015-03-12 | 2016-09-23 | 株式会社ブリヂストン | 空気入りタイヤ |
CN106042785A (zh) * | 2015-04-17 | 2016-10-26 | 住友橡胶工业株式会社 | 充气轮胎 |
JP2016203703A (ja) * | 2015-04-17 | 2016-12-08 | 住友ゴム工業株式会社 | 空気入りタイヤ |
CN106042785B (zh) * | 2015-04-17 | 2020-01-10 | 住友橡胶工业株式会社 | 充气轮胎 |
CN108349325A (zh) * | 2015-11-12 | 2018-07-31 | 株式会社普利司通 | 轮胎 |
JPWO2017082414A1 (ja) * | 2015-11-12 | 2018-08-30 | 株式会社ブリヂストン | タイヤ |
EP3375643A4 (en) * | 2015-11-12 | 2018-11-14 | Bridgestone Corporation | Tire |
JP2018083543A (ja) * | 2016-11-24 | 2018-05-31 | 住友ゴム工業株式会社 | タイヤ |
Also Published As
Publication number | Publication date |
---|---|
US7347238B2 (en) | 2008-03-25 |
EP1566291B1 (en) | 2011-07-20 |
US20060011279A1 (en) | 2006-01-19 |
CN100509448C (zh) | 2009-07-08 |
JPWO2004041556A1 (ja) | 2006-03-09 |
JP4295728B2 (ja) | 2009-07-15 |
ES2366437T3 (es) | 2011-10-20 |
EP1566291A4 (en) | 2008-08-27 |
CN1708417A (zh) | 2005-12-14 |
EP1566291A1 (en) | 2005-08-24 |
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