WO2015064248A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2015064248A1 WO2015064248A1 PCT/JP2014/075267 JP2014075267W WO2015064248A1 WO 2015064248 A1 WO2015064248 A1 WO 2015064248A1 JP 2014075267 W JP2014075267 W JP 2014075267W WO 2015064248 A1 WO2015064248 A1 WO 2015064248A1
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- WIPO (PCT)
- Prior art keywords
- tire
- rib
- vehicle
- ribs
- pneumatic tire
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0304—Asymmetric patterns
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- 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
- B60C11/0083—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the curvature of the tyre tread
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- 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
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0327—Tread patterns characterised by special properties of the tread pattern
- B60C11/0332—Tread patterns characterised by special properties of the tread pattern by the footprint-ground contacting area of the tyre tread
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- 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
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- 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
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- 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
Definitions
- the present invention relates to a pneumatic tire, and more particularly to a pneumatic tire that improves handling stability at high speed and durability at high speed with a camber.
- a land portion is defined by a groove that intersects the tread width direction cross section in the tread portion, and the ground surface of the land portion is crossed in the tread width direction cross section.
- a curved shape that protrudes outward in the radial direction, and the top portion closest to the tread tread outline over the entire tread width of the ground contact surface is landed to one side edge side of the land portion with respect to the width center of the land portion.
- a pneumatic tire is shown which is biased in the range of 0.1 to 0.4 times the part width.
- the tread surface includes a central land portion extending on the tire equator, an outer land portion extending on the shoulder portion, an intermediate land portion between the central land portion and the outer land portion,
- the curvature radius R1 of the outer surface of the central land portion is A pneumatic tire is shown that is larger than the radius of curvature R2 of the outer surface of the intermediate land and the centers of the radii of curvature R1, R2 are at the same position.
- Patent Document 2 The pneumatic tire shown in Patent Document 2 is intended to improve durability, but is for a small truck, and the central land portion itself protrudes extremely outward in the tire radial direction due to the difference in the radius of curvature. Since the difference from the intermediate land portion is large, when applied to a vehicle with a camber, the durability of the central land portion is lowered and the steering stability is also lowered.
- the present invention has been made in view of the above, and an object of the present invention is to provide a pneumatic tire that can achieve both steering stability at high speed running and durability at high speed running with a camber.
- the pneumatic tire of the present invention extends along the tire circumferential direction by at least three circumferential grooves extending along the tire circumferential direction in the tread portion.
- at least two of the ribs protrude outward in the tire radial direction from the contour line of the tread surface in the meridional section, and the protruding amount is the tire It is characterized in that it is formed smaller in order from one side in the width direction to the other side.
- At least two ribs projecting from the contour line are formed so that the projecting amount is gradually reduced from one side to the other side, so that one side is provided with a negative camber.
- the protruding amount of the rib from the contour line is 0.05 mm or more and 2.0 mm or less.
- the protruding amount of the rib When the protruding amount of the rib is less than 0.05 mm, the protruding amount of the rib becomes small, and it tends to be difficult to obtain the effect of improving the contact property and the uniform effect of the contact length. On the other hand, if the protruding amount of the rib exceeds 2.0 mm, the protruding amount of the rib becomes large, and it becomes difficult to obtain the effect of improving the grounding property and the uniform effect of the contact length. For this reason, by making the protruding amount of the ribs 0.05 mm or more and 2.0 mm or less, it is possible to remarkably obtain the effect of achieving both the steering stability at high speed running and the durability at high speed running with a camber.
- the direction of the inside and outside of the vehicle when the vehicle is mounted is specified, and the protruding amount of the rib is formed to be gradually reduced from the outside of the vehicle toward the inside of the vehicle. To do.
- this pneumatic tire it is preferable to have a negative camber in order to improve steering stability when dealing with high-speed running. Therefore, by forming the protruding amount of the ribs gradually from the outside of the vehicle toward the inside of the vehicle, the effect of improving the grounding property and the uniform effect of the grounding length can be significantly obtained when the negative camber is provided. As a result, it is possible to remarkably obtain the effect of achieving both steering stability at high speed and durability at high speed with a negative camber.
- the rib protruding from the contour line is provided adjacent to the circumferential groove, and a difference in the protruding amount of the adjacent ribs is 0.1 mm. It is characterized by being not less than 0.8 mm.
- the difference between the protruding amounts of adjacent ribs is less than 0.1 mm, the difference in protruding amount between the ribs is too small, and the effect of improving the grounding property and the uniform effect of the contact length tend to be difficult to obtain.
- the difference in protrusion amount between adjacent ribs exceeds 0.8 mm, the difference in protrusion amount between the ribs is too large, and it tends to be difficult to obtain the effect of improving the ground contact and the uniform effect of the contact length.
- the difference of the protrusion amount of each adjacent rib shall be 0.01 mm or more and 0.8 mm or less, and the effect which balances the steering stability in high-speed driving
- the rib protruding from the contour line is provided sandwiched between the circumferential grooves.
- the ribs protruding from the contour line are provided by being sandwiched between circumferential grooves, and are the ribs on the inner side in the tire width direction excluding the outermost ribs in the tire width direction.
- Each rib on the inner side in the tire width direction protrudes outward in the tire radial direction from the contour line, and the protruding amount is gradually reduced from one side to the other side in the tire width direction, thereby improving the ground contact property.
- it greatly contributes to the uniform effect of the contact length it is possible to remarkably obtain the effect of achieving both handling stability at high speed and durability at high speed with camber.
- the pneumatic tire according to the present invention can achieve both handling stability at high speed and durability at high speed with camber.
- FIG. 1 is a meridional sectional view of a tread portion of a pneumatic tire according to an embodiment of the present invention.
- FIG. 2 is a meridional sectional view of the tread portion of the pneumatic tire according to the embodiment of the present invention.
- FIG. 3 is an enlarged meridian cross-sectional view of the tread portion of the pneumatic tire according to the embodiment of the present invention.
- FIG. 4 is an enlarged meridian cross-sectional view of the tread portion of the pneumatic tire according to the embodiment of the present invention.
- FIG. 5 is an enlarged meridian cross-sectional view of the tread portion of the pneumatic tire according to the embodiment of the present invention.
- FIG. 6 is a chart showing the results of the performance test of the pneumatic tire according to the example of the present invention.
- FIG. 7 is a chart showing the results of the performance test of the pneumatic tire according to the example of the present invention.
- FIGS. 1 and 2 are meridional sectional views of the tread portion of the pneumatic tire according to the present embodiment
- FIGS. 3 to 5 are enlarged meridional sectional views of the tread portion of the pneumatic tire according to the present embodiment. .
- the tire radial direction refers to a direction orthogonal to the rotation axis (not shown) of the pneumatic tire 1
- the tire radial direction inner side refers to the side toward the rotation axis in the tire radial direction, the tire radial direction outer side. Means the side away from the rotation axis in the tire radial direction.
- the tire circumferential direction refers to a direction around the rotation axis as a central axis.
- the tire width direction means a direction parallel to the rotation axis
- the inner side in the tire width direction means the side toward the tire equator plane (tire equator line) CL in the tire width direction
- the outer side in the tire width direction means the tire width direction.
- the tire equatorial plane CL is a plane that is orthogonal to the rotation axis of the pneumatic tire 1 and passes through the center of the tire width of the pneumatic tire 1.
- the tire width is the width in the tire width direction between the portions located outside in the tire width direction, that is, the distance between the portions farthest from the tire equatorial plane CL in the tire width direction.
- the tire equator line is a line along the tire circumferential direction of the pneumatic tire 1 on the tire equator plane CL. In the present embodiment, the same sign “CL” as that of the tire equator plane is attached to the tire equator line.
- the tread portion 2 is made of a rubber material (tread rubber), and is exposed at the outermost side in the tire radial direction of the pneumatic tire 1.
- the surface is the contour of the pneumatic tire 1.
- a tread surface 21 is formed on the outer peripheral surface of the tread portion 2, that is, on the tread surface that contacts the road surface during traveling.
- the tread portion 2 is provided with a circumferential groove 22 that opens in the tread surface 21.
- the circumferential groove 22 has a groove depth of 5 mm or more from the tread surface 21 to the groove bottom, extends along the tire circumferential direction, and is plural in the tire width direction (four in FIG. 2 is three).
- the tread portion 2 has a plurality of ribs 23 extending in the tire circumferential direction by the plurality of circumferential grooves 22 in the tire width direction (five in FIG. 1 and four in FIG. 2). The compartments are formed side by side. Further, the tread portion 2 is formed with lug grooves 24 that extend in a direction intersecting the circumferential groove 22 and are arranged in the tire circumferential direction in each rib 23. In FIG. 1 and FIG. 2, the lug groove 24 is provided only on the outermost rib 23 in the tire width direction, but may be provided on other ribs 23. The lug groove 24 may be either in a form communicating with the circumferential groove 22 or in a form not communicating with the circumferential groove 22.
- the lug groove 24 is provided in the outermost rib 23 in the tire width direction, the lug groove 24 is formed to open to the outer side in the tire width direction.
- the rib 23 is formed on the tire equator plane CL as shown in FIG. 1, a groove extending along the tire circumferential direction on the tire equator plane CL and having a groove depth of 5 mm or more. However, this groove is not included in the circumferential groove 22.
- the pneumatic tire 1 is not shown in the drawing, but a shoulder portion that is continuously disposed on both outer sides of the tread portion 2 in the tire width direction, and a tire in the pneumatic tire 1 that is continuous with each shoulder portion. A sidewall portion exposed at the outermost side in the width direction and a bead portion engaged with the rim continuously with each sidewall portion.
- the pneumatic tire 1 is provided with a bead core formed by winding a bead wire, which is a steel wire, in a ring shape in the tire circumferential direction inside each bead portion.
- the pneumatic tire 1 is provided with a carcass layer so that a pair of bead cores are folded back from the inner side in the tire width direction to the outer side in the tire width direction and wound around in a toroidal shape in the tire circumferential direction to form a tire skeleton. ing. Further, the pneumatic tire 1 is provided inside the tread portion 2 on the outer side in the tire radial direction, which is the outer periphery of the carcass layer, and is provided with a belt layer having a multilayer structure in which at least two belts are laminated.
- ribs 23 are formed to protrude outward in the tire radial direction from the contour line L of the tread surface 21. .
- the protruding ribs G are formed so that the protruding amount G is gradually reduced from one side to the other side in the tire width direction.
- the outermost rib 23 in the tire width direction is not formed so as to protrude, and three ribs sandwiched between the circumferential grooves 22 are formed so as to protrude from the contour line L.
- the projecting amount G is in a relationship of Ga> Gb> Gc from the other side to the other side.
- all (four) ribs 23 are formed so as to project from the contour line L, and the projecting amount G from the one side to the other side has a relationship of Gd> Ge> Gf> Gg. ing.
- the at least two ribs 23 protruding from the contour line L may not be adjacent to each other with the circumferential groove 22 interposed therebetween, and between the ribs 23 protruding from the contour line L between the tire width directions. There may be a rib 23 that does not protrude from the contour line L.
- the outline L is two adjacent to both sides in the tire width direction of the rib 23 in the meridional section.
- the contour line L has a ground end T on the rib 23 in the meridional section, and the ground end T is defined as P1.
- P2 the opening end on the outer side in the tire width direction of the circumferential groove 22 adjacent to the rib 23
- P3 the opening end on the inner side in the tire width direction of the circumferential groove 22
- the contour line L is defined as described above with the end point located on the outermost side in the tire radial direction being the opening end.
- the ribs 23 disposed between the circumferential grooves 22 are shown, but the same applies to the outermost ribs 23 in the tire width direction.
- ground contact end T means that when the pneumatic tire 1 is assembled to a regular rim and filled with a regular internal pressure and a regular load is applied, the tread surface 21 of the tread portion 2 of the pneumatic tire 1 is a road surface. In the contact area, both outermost ends in the tire width direction are continuous in the tire circumferential direction.
- the regular rim is a “standard rim” defined by JATMA, a “Design Rim” defined by TRA, or a “Measuring Rim” defined by ETRTO.
- the normal internal pressure is “maximum air pressure” defined by JATMA, the maximum value described in “TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES” defined by TRA, or “INFLATION PRESSURES” defined by ETRTO.
- the normal load is “maximum load capacity” defined by JATMA, the maximum value described in “TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES” defined by TRA, or “LOAD CAPACITY” defined by ETRTO.
- the pneumatic tire 1 of the present embodiment includes at least four circumferential grooves 22 that extend along the tire circumferential direction in the tread portion 2 and at least four that extend along the tire circumferential direction.
- the ribs 23 are defined, at least two ribs 23 protrude outward in the tire radial direction from the contour line L of the tread surface in the meridional section, and the protruding amount G is in the tire width direction. The size is gradually reduced from one side to the other side.
- At least two ribs 23 protruding from the contour line L are formed so that the protruding amount G is sequentially reduced from one side to the other side, thereby providing a negative camber.
- the one side is the outside of the vehicle and the other side is the inside of the vehicle, while the positive camber is attached, the one side is the inside of the vehicle and the other side is the outside of the vehicle. Since the ground contact property is improved, it is possible to improve the handling stability during high speed traveling.
- the protruding amount G of the rib 23 from the contour line L is preferably 0.05 mm or more and 2.0 mm or less.
- the protruding amount G of the rib 23 is less than 0.05 mm, the protruding amount G of the rib 23 is small, and it is difficult to obtain the effect of improving the ground contact property and the uniform effect of the contact length.
- the protruding amount G of the rib 23 exceeds 2.0 mm, the protruding amount G of the rib 23 increases, and it becomes difficult to obtain the effect of improving the ground contact and the uniform effect of the contact length.
- the protrusion amount G of the rib 23 from the contour line L is 0.2 mm or more and 0.6 mm. The following is preferable.
- the direction inside and outside the vehicle when the vehicle is mounted is specified, and the protruding amount G of the rib 23 is formed so as to gradually decrease from the vehicle outer side toward the vehicle inner side. Is preferred.
- Such a pneumatic tire 1 is designated, for example, by indicating the direction inside and outside the vehicle when the vehicle is mounted by an index provided on the side wall portion.
- designated of a vehicle inner side and a vehicle outer side is not restricted to the case where it mounts
- the direction of the rim with respect to the inside and outside of the vehicle is determined in the tire width direction.
- the orientation with respect to the vehicle inner side and the vehicle outer side is designated in the tire width direction.
- this pneumatic tire 1 it is preferable to have a negative camber in order to improve steering stability when dealing with high speed running. Therefore, by forming the protrusion amount G of the rib 23 gradually smaller from the outside of the vehicle toward the inside of the vehicle, the effect of improving the grounding property and the uniform effect of the grounding length can be significantly obtained when the negative camber is provided. As a result, it is possible to remarkably obtain the effect of achieving both steering stability at high speed and durability at high speed with a negative camber.
- the ribs 23 protruding from the contour line L are provided adjacent to each other with the circumferential groove 22 interposed therebetween, and the difference in the protruding amount G of each adjacent rib 23 is different. It is preferable that it is 0.1 mm or more and 0.8 mm or less.
- the difference in protrusion amount G between adjacent ribs 23 is less than 0.1 mm, the difference in protrusion amount G between the ribs 23 is too small, and it is difficult to obtain the effect of improving ground contact and the effect of uniform contact length. It becomes.
- the difference in protrusion amount G between adjacent ribs 23 exceeds 0.8 mm, the difference in protrusion amount G between the ribs 23 is too large, and it is difficult to obtain the effect of improving ground contact and the effect of uniform contact length. It becomes a trend.
- the difference of the protrusion amount G of each adjacent rib 23 is set to 0.01 mm or more and 0.8 mm or less, so that the effect of achieving both steering stability at high speed running and durability at high speed running with a camber is remarkable. Can get to.
- the rib 23 protruding from the contour line L is provided between the circumferential grooves 22.
- the ribs 23 protruding from the contour line L are provided between the circumferential grooves 22, and the tire width excluding the outermost ribs (shoulder side) ribs 23 in the tire width direction. It is each rib 23 inside a direction.
- Each of the ribs 23 on the inner side in the tire width direction protrudes outward in the tire radial direction from the contour line L, and the protruding amount G is formed to be gradually decreased from one side to the other side in the tire width direction. This greatly contributes to the improvement effect and the uniform effect of the contact length. Therefore, it is possible to remarkably obtain the effect of achieving both the steering stability at high speed running and the durability at high speed running with camber.
- FIG 6 and 7 are charts showing the results of the performance test of the pneumatic tire according to this example.
- performance tests on high speed maneuverability steering stability during high speed driving
- high speed durability with camber durability during high speed driving with camber
- the method for evaluating high-speed safety is to assemble the test tire on a rim of 21 x 10 J, fill it with air pressure of 260 kPa, mount it on a test vehicle (passenger vehicle with a displacement of 4800 cc), and run on a dry road test course.
- the steering performance at the time of lane change and cornering and the stability at the time of going straight are performed by sensory evaluation by one skilled test driver. This sensory evaluation is indicated by an index based on a conventional pneumatic tire as a reference (100), and the higher this index is, the better the steering stability is.
- the high-speed durability evaluation method with camber is as follows.
- the test tire is assembled on a rim of 21 ⁇ 10 J, filled with air pressure of 340 kPa, a load of 7.65 kN is applied, and a camber angle is ⁇ 2.7 degrees (one side is outside the vehicle). Or equivalent to when installed on the vehicle with the other side inside the vehicle) or +2.7 degrees (equivalent to mounting on the vehicle with one side inside the vehicle and the other side outside the vehicle).
- the vehicle was taken on the step and traveled, and the speed when the testing machine detected a tire failure was measured. Then, using the conventional pneumatic tire as a reference, it was evaluated how many steps were improved or how many steps were reduced.
- +1 step indicates that the vehicle can travel for 20 minutes at +10 km / h
- +0.5 step indicates that the vehicle can travel for 10 minutes at +10 km / h.
- Step0 Running time 0min ... Speed 0km / h ⁇ Step1 ... Running time 1min ... Speed 0 ⁇ 190km / h ⁇ Step2 ... Running time 5min ... Speed 190km / h ⁇ Step3 ... Running time 5min ... Speed 240km / h ⁇ Step4 ... Running time 10min ... Speed 250km / h ⁇ Step5: Travel time 10min ... Speed 260km / h Step 6: Traveling time 10 min ... Speed 270 km / h Step 7: Traveling time 20 min ... Speed 280 km / h ⁇ Step8 ... Running time 20min ... Speed 290km / h ⁇ Step9 ... Running time 20min ... Speed 300km / h ⁇ Step 10: Traveling time 20 min ... Speed 310 km / h Thereafter, the speed is increased by +1 step (+10 km / h, 20 min running) until failure.
- FIG. 6 shows the rib structure of FIG.
- the outermost rib in the tire width direction is defined as one side outer rib
- the rib adjacent to the inner side in the tire width direction is defined as the one side inner rib
- the tire equatorial plane adjacent to the inner side in the tire width direction of the one side inner rib is the tire equator upper rib
- the rib adjacent to the other side of the tire equator rib is the other side inner rib
- the outermost rib adjacent to the outer side in the tire width direction of the other side inner rib is the other side outer rib.
- the ribs of the pneumatic tire of Conventional Example 1 do not protrude.
- the pneumatic tire of Comparative Example 1 only the ribs on the tire equator surface protrude.
- the protruding amount of the rib is 0.05 mm or more and 2.0 mm or less.
- the difference between the protruding amounts of the adjacent ribs is 0.1 mm or more and 0.8 mm or less.
- the pneumatic tires of Examples 1 to 3 and Examples 9 to 15 are provided with ribs protruding from the contour line sandwiched between circumferential grooves.
- FIG. 7 shows the rib structure of FIG.
- the outermost rib in the tire width direction is set as one side outer rib
- the rib adjacent to the inner side in the tire width direction is set as one side inner rib
- the rib adjacent to the other side of the one side inner rib is set as the other side inner rib.
- the outermost rib adjacent to the outer side in the tire width direction of the other side inner rib is defined as the other side outer rib.
- the ribs of the pneumatic tire of Conventional Example 2 do not protrude. In the pneumatic tire of Comparative Example 2, only one side inner rib protrudes.
- the pneumatic tires of Examples 16 to 27 in FIG. 7 at least two ribs protrude outward in the tire radial direction from the contour line of the tread surface in the meridional section, and the protruding amount is the tire. It is formed smaller in order from one side in the width direction to the other side.
- the protruding amount of the rib is 0.05 mm or more and 2.0 mm or less.
- the difference in protrusion amount between adjacent ribs is 0.1 mm or more and 0.8 mm or less.
- the pneumatic tires of Example 16 and Examples 23 to 27 are provided with ribs protruding from the contour line sandwiched between circumferential grooves.
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Abstract
Description
・step1…走行時間1min…速度0~190km/h
・step2…走行時間5min…速度190km/h
・step3…走行時間5min…速度240km/h
・step4…走行時間10min…速度250km/h
・step5…走行時間10min…速度260km/h
・step6…走行時間10min…速度270km/h
・step7…走行時間20min…速度280km/h
・step8…走行時間20min…速度290km/h
・step9…走行時間20min…速度300km/h
・step10…走行時間20min…速度310km/h
以下、故障まで+1step(+10km/h、20min走行)ずつ速度アップ
2 トレッド部
21 トレッド面
22 周方向溝
23 リブ
24 ラグ溝
CL タイヤ赤道面
G 突出量
L 輪郭線
Claims (5)
- トレッド部にタイヤ周方向に沿って延在する少なくとも3本の周方向溝により、タイヤ周方向に沿って延在する少なくとも4本のリブが区画形成される空気入りタイヤにおいて、
少なくとも2本の前記リブは、子午断面にてトレッド面の輪郭線よりもタイヤ径方向外側に突出しており、その突出量がタイヤ幅方向の一側から他側に向けて順次小さく形成されていることを特徴とする空気入りタイヤ。 - 前記輪郭線からの前記リブの突出量は、0.05mm以上2.0mm以下であることを特徴とする請求項1に記載の空気入りタイヤ。
- 車両装着時での車両内外の向きが指定されており、前記リブの突出量は、車両外側から車両内側に向けて順次小さく形成されていることを特徴とする請求項1または2に記載の空気入りタイヤ。
- 前記輪郭線から突出する前記リブは、前記周方向溝を間において隣接して設けられており、当該隣接する各前記リブの突出量の差が0.1mm以上0.8mm以下であることを特徴とする請求項1~3のいずれか一つに記載の空気入りタイヤ。
- 前記輪郭線から突出する前記リブは、前記周方向溝で挟まれて設けられていることを特徴とする請求項1~4のいずれか一つに記載の空気入りタイヤ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/028,251 US10239354B2 (en) | 2013-10-30 | 2014-09-24 | Pneumatic tire |
DE112014005018.0T DE112014005018T5 (de) | 2013-10-30 | 2014-09-24 | Luftreifen |
JP2014546231A JP5984957B2 (ja) | 2013-10-30 | 2014-09-24 | 空気入りタイヤ |
CN201480053394.5A CN105579250B (zh) | 2013-10-30 | 2014-09-24 | 充气轮胎 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013-225365 | 2013-10-30 | ||
JP2013225365 | 2013-10-30 |
Publications (1)
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WO2015064248A1 true WO2015064248A1 (ja) | 2015-05-07 |
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ID=53003861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2014/075267 WO2015064248A1 (ja) | 2013-10-30 | 2014-09-24 | 空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US10239354B2 (ja) |
JP (1) | JP5984957B2 (ja) |
CN (1) | CN105579250B (ja) |
DE (1) | DE112014005018T5 (ja) |
WO (1) | WO2015064248A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017087858A (ja) * | 2015-11-05 | 2017-05-25 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
JP2017094764A (ja) * | 2015-11-18 | 2017-06-01 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
US20170210174A1 (en) * | 2014-07-25 | 2017-07-27 | The Yokohama Rubber Co., Ltd. | Pneumatic Tire |
EP3305559B1 (en) * | 2016-10-05 | 2019-09-04 | Kenda Rubber Ind. Co., Ltd. | Tire |
JP2020001659A (ja) * | 2018-07-02 | 2020-01-09 | 横浜ゴム株式会社 | 空気入りタイヤ |
US11034192B2 (en) | 2016-10-03 | 2021-06-15 | Kenda Rubber Ind. Co., Ltd. | Tire |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6787388B2 (ja) * | 2018-12-19 | 2020-11-18 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP7225824B2 (ja) * | 2019-01-22 | 2023-02-21 | 住友ゴム工業株式会社 | タイヤ |
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2014
- 2014-09-24 US US15/028,251 patent/US10239354B2/en active Active
- 2014-09-24 DE DE112014005018.0T patent/DE112014005018T5/de active Pending
- 2014-09-24 WO PCT/JP2014/075267 patent/WO2015064248A1/ja active Application Filing
- 2014-09-24 JP JP2014546231A patent/JP5984957B2/ja active Active
- 2014-09-24 CN CN201480053394.5A patent/CN105579250B/zh active Active
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JP2009083524A (ja) * | 2007-09-27 | 2009-04-23 | Bridgestone Corp | 空気入りタイヤ |
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Publication number | Priority date | Publication date | Assignee | Title |
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US20170210174A1 (en) * | 2014-07-25 | 2017-07-27 | The Yokohama Rubber Co., Ltd. | Pneumatic Tire |
US10906354B2 (en) * | 2014-07-25 | 2021-02-02 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
JP2017087858A (ja) * | 2015-11-05 | 2017-05-25 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
JP2017094764A (ja) * | 2015-11-18 | 2017-06-01 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
US11034192B2 (en) | 2016-10-03 | 2021-06-15 | Kenda Rubber Ind. Co., Ltd. | Tire |
EP3305559B1 (en) * | 2016-10-05 | 2019-09-04 | Kenda Rubber Ind. Co., Ltd. | Tire |
JP2020001659A (ja) * | 2018-07-02 | 2020-01-09 | 横浜ゴム株式会社 | 空気入りタイヤ |
WO2020009049A1 (ja) * | 2018-07-02 | 2020-01-09 | 横浜ゴム株式会社 | 空気入りタイヤ |
US11548323B2 (en) | 2018-07-02 | 2023-01-10 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
Also Published As
Publication number | Publication date |
---|---|
US20160280011A1 (en) | 2016-09-29 |
CN105579250B (zh) | 2017-06-30 |
US10239354B2 (en) | 2019-03-26 |
DE112014005018T5 (de) | 2016-08-04 |
JPWO2015064248A1 (ja) | 2017-03-09 |
JP5984957B2 (ja) | 2016-09-06 |
CN105579250A (zh) | 2016-05-11 |
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