WO2004089656A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2004089656A1 WO2004089656A1 PCT/JP2004/004902 JP2004004902W WO2004089656A1 WO 2004089656 A1 WO2004089656 A1 WO 2004089656A1 JP 2004004902 W JP2004004902 W JP 2004004902W WO 2004089656 A1 WO2004089656 A1 WO 2004089656A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- belt
- edge
- rubber
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
- B60C2009/2238—Physical properties or dimensions of the ply coating rubber
- B60C2009/2242—Modulus; Hardness; Loss modulus or "tangens delta"
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
- Y10T152/10783—Reinforcing plies made up from wound narrow ribbons
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
- Y10T152/10801—Structure made up of two or more sets of plies wherein the reinforcing cords in one set lie in a different angular position relative to those in other sets
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
- Y10T152/1081—Breaker or belt characterized by the chemical composition or physical properties of elastomer or the like
Definitions
- the present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having improved rolling resistance and uniformity.
- the extending portion is extended by 1 O mm or more in the tire axial direction, the amount of heat generated in the shoulder portion due to repeated deformation received during rolling of the tire This has led to the problem of increased energy bite and increased rolling resistance.
- the portion extending 1 Omm or more hangs down from the edge of the belt layer inward in the tire radial direction, and as a result, there is a gap between the belt cover layer and the extended portion. Since the difference in circumferential length is large, wrinkles are generated in a portion that extends during green tire molding during vulcanization, which is a factor that deteriorates the uniformity of the tire after vulcanization.
- An object of the present invention is to provide a pneumatic tire having a belt cover layer extending from an edge of a belt layer of 10 l or more and capable of improving both rolling resistance and uniformity.
- the pneumatic tire of the present invention that achieves the above object has a carcass between bead portions. At least two belt layers in which reinforcing cords are arranged obliquely to the tire circumferential direction are provided on the outer side of the carcass layer of the tread portion, and reinforcement is provided on the outer side of the belt layer and extends in the tire circumferential direction.
- a belt force bar layer having a cord covered with a coating rubber is disposed, and the belt cover layer extends in the axial direction of the tire at least 10 mm beyond the edge of the belt layer having the largest belt width among the at least two belt layers.
- At least the coated rubber of the extended portion of the belt cover layer is formed of a rubber having a temperature of 60 ° C. where tan ⁇ 5 is tan ⁇ ⁇ 0.1.
- the ratio h / SH of the tire radial length h and the tire section height SH between the edge of the extending portion and the edge of the belt layer having the maximum belt width is defined as h / SH ⁇ l.5. / 100.
- the cord rubber of the extended portion of the belt cover layer is made of rubber having a tan ⁇ of 0.1 or less at a temperature of 60 ° C, and the tire between the extended portion and the edge of the belt layer having the maximum belt width is formed.
- the circumferential difference between the belt side of the belt cover layer and the extended portion is reduced, and wrinkles are generated in the extended portion during green tire molding. Therefore, the uniformity can be improved in a tire provided with a belt cover layer having an extension of 1 O mm or more.
- At least two layers in which a carcass layer extends between bead portions and reinforcing cords are arranged obliquely to the tire circumferential direction on the outer side of the car force layer of the tread portion.
- a belt layer provided with a belt layer, a belt force bar layer covering the belt layer, a belt layer disposed on an outer peripheral side of the at least two belt layers, and a reinforcing cord extending in a tire circumferential direction covered with a coating rubber;
- a pneumatic tire comprising a belt cover extending layer in which a reinforcing cord to be coated is coated with a coating rubber, wherein at least tan ⁇ at a temperature of 60 ° C.
- the tire is composed of rubber having a tan ⁇ 0.1, and the belt force, the tire radial length h between the outer edge of the extended layer and the edge of the belt layer having the maximum belt width, and the tire
- the ratio h / SH to the section height SH is set to h / SH ⁇ 1.5 / 100.
- the belt cover layer is composed of the belt cover main body layer and the belt cover extension layer, and the belt cover extension layer has the same configuration as the above-described extended portion. Rolling resistance and uniformity can be improved while taking advantage of improved noise.
- FIG. 1 is a cross-sectional view showing a principal part of a pneumatic tire according to an embodiment of the present invention, taken along a meridian cross section.
- FIG. 1 The figure is a schematic explanatory diagram of FIG.
- FIG. 3 (a) is a cross-sectional explanatory view showing an example in which one layer of a belt cover is formed using a strip material
- FIG. 3 (b) is a cross-sectional view showing an example of a strip material used therein.
- FIG. 4 is a schematic explanatory view showing a main part of another embodiment of the pneumatic tire of the present invention.
- FIG. 5 is a schematic explanatory view showing a main part of still another embodiment of the pneumatic tire of the present invention.
- FIG. 6 is a schematic explanatory view showing a main part of still another embodiment of the pneumatic tire of the present invention.
- T1 is a pneumatic tire
- 1 is a tread portion
- 2 is a side wall portion
- CL is a line of a tire center.
- a bead core (not shown) having two layers, an inner carcass layer 4A and an outer carcass layer 4B, extending between left and right bead portions (not shown) and having both ends embedded in the bead portion. (Shown) is folded from the inside to the outside of the tire.
- the two belt layers 5 are located on the first belt layer 5 A, which is adjacent to the carcass layer 4 and has a wider belt width, and the first belt layer 5 A, and the belt width is narrower than the first belt layer 5 A. It is composed of a belt layer 5B.
- a side rubber layer 6 is provided outside the carcass layer 4 of the sidewall portion 2.
- the outer peripheral end 6a of the side rubber layer 6 extends to the inner peripheral side of the edge 5A1 of the first belt layer 5A.
- a belt edge cushion rubber layer 7 having a substantially triangular cross section is arranged on the inner peripheral side of the belt layer 5.
- This belt edge cushion rubber layer ⁇ is located between the outer peripheral end 6 a of the side rubber layer 6 and the edge 5 A 1 of the first belt layer 5 A, and extends from the edge of the belt layer 5 to the outside of the tire. Is established.
- a belt cover layer in which reinforcing cords f made of an organic fiber cord such as a nail cord extending in the tire circumferential direction are arranged in the tire width direction and covered with a coating rubber r. 8 are provided on the outer peripheral side of the belt layer 5.
- the belt cover layer 8 has an extending portion 9 extending at least 10 times (length measured along the tire axial direction) in the tire axial direction beyond the edge B of the first belt layer 5A.
- the existing portion 9 is disposed on the belt edge cushion rubber layer 7.
- Belt In the cover layer 8, at least the coating rubber of the extending portion 9 is made of rubber having a temperature of 60 ° C. tan (5 is set to tan ⁇ ⁇ 0.1).
- the belt cover layer 8 is preferably formed by spirally winding a strip material S in which a reinforcing cord f is coated with a coating rubber r in a tire circumferential direction.
- a strip material S spirally wound in the tire circumferential direction has a single-layer structure in which edges of adjacent strip materials abut against each other to form a single layer. From the portion of the belt cover layer 8 adjacent to the edge portion of the belt layer 5 to the extension portion 9, the adjacent strip materials S are wound so that the half portions in the width direction partially overlap with each other. Turned. In FIG.
- the edges of the adjacent strip materials S wound around the center of the belt cover layer 8 are separated to make the drawing easier to see, but they are actually brought into contact with each other.
- the belt cover layer 8 is composed of the strip material S and the strip material S
- the movement of the shoulder portion 1S can be suppressed by the extension portion 9 in which the strip material S is partially overlapped, so that heat generation is suppressed and the rolling resistance is further improved.
- a standard rubber layer 10 is disposed, and on the outer peripheral side of the undertread rubber layer 10, a cap tread rubber layer 11 is laminated.
- the tip chip rubber layer 11 is disposed on the shoulder 1S so as to cover the undertread rubber layer 10, the cap tread rubber layer 11, and the edges D, C, and A of the extending portion 9. It is.
- Ratio between the tire radial length h measured along the tire radial direction between the edge A of the extended portion 9 of the belt cover layer 8 and the edge B of the first belt layer 5A and the tire cross-section height SH h / SH is such that h / SH ⁇ 1.5 / 100.
- the tire section height SH referred to in the present invention is a Attach it to the specified applicable rim, measure the tire outer diameter at the maximum air pressure (air pressure corresponding to the maximum load capacity), and subtract the value of the outer diameter of the rim from the value of the outer diameter. Divided by However, pneumatic tires for passenger cars have an air pressure of 20 O kPa.
- the cord rubber r of the extending portion 9 of the belt cover layer 8 is made of rubber having a tan 5 of 0.1 or less at a temperature of 60 ° C. Further, the extending portion 9 and the first belt layer By reducing the tire radial length h between the edges A and B of 5 A as described above, heat generation at the shoulder part 1 S due to repeated deformation received during tire rolling is suppressed, and energy loss is reduced. Since it can be reduced, the rolling resistance can be improved.
- the circumferential difference between the center side of the belt cover layer 8 and the extended portion 9 is reduced, and wrinkles are generated in the extended portion 9 during green tire molding. Can be suppressed. Therefore, the uniformity can be improved in the tire T1 including the belt cover layer 8 having the extending portion 9 of 1 Omm or more.
- tan ⁇ 5 exceeds 0.1, heat generation in the shoulder 1S cannot be suppressed, and it becomes difficult to improve rolling resistance.
- tan ⁇ is set to 0.05 or less.
- the lower limit of tan 5 is desirably 0-01 or more from the viewpoint of achieving both strength and durability.
- the ratio h / SH is larger than 1.5 / 100, the effect of improving the uniformity cannot be obtained.
- the ratio h / SH is less than 1.0 / 100, more preferably 0.
- FIG. 4 shows another embodiment of the pneumatic tire of the present invention.
- This pneumatic tire T2 is different from the pneumatic tire T1 in that the side edge rubber layer 6 is replaced with the belt edge cushion rubber layer 7.
- the outer peripheral end 6a is formed in a substantially triangular cross section, and the outer peripheral end 6a is formed in a belt edge cushion rubber portion.
- the extension part 9 is arranged on the belt edge cushion rubber part. Have been.
- a pneumatic tire having such a configuration may be used. Since the other configuration is the same as that of the pneumatic tire T1 in FIGS. 1 and 2, the same components are denoted by the same reference numerals and description thereof will be omitted.
- FIG. 5 shows still another embodiment of the pneumatic tire of the present invention.
- a belt cover layer 8 which covers the belt layer 5 is disposed on the outer peripheral side of the belt layer 5.
- Belt cover main body layers 8 and X, and a belt cover extension layer 8'Y disposed on both sides of the belt cover layer 8'X.
- the belt cover main body layer 8, X and the belt cover extension layer 8, Y are formed by arranging reinforcing cords extending in the tire circumferential direction in the tire width direction. It is configured to be covered with rubber.
- the belt cover extension layer 8, Y extends beyond the edge B of the first belt layer 5A from the position between the edge portions 5A1, 5B1 of the first belt layer 5A and the second belt layer 5B. It extends outward in the tire width direction.
- the belt cover extension layer 8'Y extends from the edge B of the first belt layer 5A in the tire axial direction at least 10 ram (the length measured along the tire axial direction) to the outside in the tire width direction.
- the portion extending from the edge B of the first belt layer 5A is disposed on the belt edge cushion rubber layer 7.
- an outer peripheral end 6a of the side rubber layer 6 is formed in a belt edge cushion rubber section having a substantially triangular cross section as shown in FIG. 4, and a belt cover is provided on the belt edge cushion rubber section.
- a portion extending from the edge B of the first belt layer 5A of the extension layer 8'Y may be arranged.
- Y is made of rubber whose tan ⁇ at a temperature of 60 ° C is set to tan S ⁇ 0.1.
- the radial length measured along the tire radial direction between the outer edge Y of the belt cover extension layer 8, Y and the edge B of the first belt layer 5A, and The ratio h / SH to the tire section height SH is h / SH ⁇ 1.5 / 100.
- the belt cover layer 8 As shown in FIG. 3, it is preferable that the belt cover layer 8, as shown in FIG. 3, has a configuration in which a strip material S in which a reinforcing cord f is coated with a coating rubber r is spirally wound in the tire circumferential direction.
- the belt cover layer 8 is made of the strip material S, it is preferable that at least the belt cover extension layer 8 and the adjacent strip material S partially overlap each other.
- the belt cover extension layer 8′Y is described above.
- FIG. 6 shows still another embodiment of the pneumatic tire of the present invention.
- the above-mentioned belt cover extending layer 8'Y is connected to the edge portion 5A of the first belt layer 5A. It is arranged between the outer peripheral end 6 a of the side rubber layer 6 on the force-casting layer 4 and 1.
- the belt edge cushion rubber layer 7 is provided, and the belt cover extension layer 8 ′ Y is located on the side rubber layer 6.
- Other configurations are the same as those of the pneumatic tire T3 in FIG. 5, and therefore, the same components are denoted by the same reference numerals and description thereof will be omitted.
- a pneumatic tire having such a configuration may be used.
- the rubber constituting the belt edge cushion rubber layer 7, the undertread rubber layer 10 and the wing tip rubber layer 12 is a tan having a temperature of 60 ° C. higher than the rubber constituting the captive red rubber layer 11. It is preferable to use a rubber having a lower ⁇ of 25% or more, and the tan S of the rubber at a temperature of 60 ° C. is preferably set to 0.15 or less in order to further improve the rolling resistance. Better No. Desirably, tan 5 is set to 0.10 or less. The lower limit of tan 5 is preferably set at 0.01 from the viewpoint of achieving both strength and durability.
- the outer peripheral end 6a of the side rubber layer 6 has a substantially triangular cross section shown in FIG. When the belt edge cushion rubber portion is formed on the belt edge cushion rubber portion, it is preferable to use the same rubber as the rubber of the belt edge cushion rubber layer 7 described above.
- the relationship between the edge C of the cap tread rubber layer 11 and the edge A of the extension 9 is obtained by subtracting the outer carcass layer 4B from the edge C of the cap tread rubber layer 11.
- Tire width from the intersection A 'of the normal N obtained by drawing the intersection C' between the line M and the outer carcass layer 4B from the edge A of the extending portion 9 to the outer carcass layer 4B It is preferable to be located on the inner side in the direction in order to further improve the rolling resistance.
- the relationship between the inner peripheral end E of the wing tip rubber layer 12 and the edge A of the extending portion 9 is expressed as follows: the length y between the inner peripheral end E and the edge A measured along the tire axis direction is 10 hidden.
- the edge A is separated from the inner peripheral end E by 1 O mm or more in the tire axial direction in order to suppress the generation of wrinkles in the extending portion 9 during green tire molding and to improve the uniformity.
- the length y is 15 mm or more.
- the upper limit of the length y may be any position as long as the length of the extending portion 9 is at least 10 mm.
- the relationship between the outer edge Y of the belt cover extension layer 8 ′ Y and the inner peripheral end E of the wing tip rubber layer 12 also depends on the edge A of the extending portion 9 and the inner peripheral end of the wing tip rubber layer 12 described above. It should be similar to the relationship with E.
- the upper limit of the length of the extending portion 9 or the length extending beyond the edge B of the first belt layer 5 A of the belt cover and the first extending layer 8, Y is the inner circumference of the wing tip rubber layer 12.
- end E in the case of a tire without wing tip rubber layer 12, under-tread rubber layer 10 and cap tread rubber layer 1 extending to the position of wing tip rubber layer 12 are provided. 1, the relationship between the edge D of the under-tread rubber layer 10 and the edge A of the extended portion 9 or the outer edge Y of the belt cover extended layer 8'Y is the same as that of the inner peripheral end E described above. can do.
- FIGS. 1 and 4 an example in which one layer of the belt cover layer 8 is provided is shown, but a plurality of layers may be laminated as needed. The same applies to the belt cover layer 8 'in the embodiments of Figs.
- a belt edge cover layer that covers only the edge portion of the belt layer 5 may be further provided on the outer peripheral side of the edge portion of the belt layer 5.
- a pneumatic tire having two or more belt layers may be used, and an air having at least two belt layers 5A and 5B may be used. Any tires may be used.
- the extending portion 9 or the belt cover-extending layer 8Y described above is required to be at least 10 mm longer than the edge of the belt layer having the maximum belt width among the belt layers. It is assumed to extend in the axial direction.
- the tan ⁇ at a temperature of 60 ° C. in the present invention refers to a viscoelastic spectrometer manufactured by Toyo Seiki Seisaku-sho, Ltd., with an initial strain of 10 ⁇ 2%, a frequency of 2 ° C., and an ambient temperature of 6 ° C. This value is measured at 0 ° C.
- the present invention can be preferably used particularly for pneumatic tires for passenger cars, but is not limited thereto.
- Tire size is 205/65 R 15.
- Tire structure is common in Fig. 6 and tan ⁇ tire diameter at 60 ° C of the coating rubber of the belt cover and extension layer
- the tire of the present invention in which the ratio h / SH of the direction length h to the tire sectional height SH, h / SH, and the length of the belt cover extending from the edge of the first belt layer in the axial direction of the tire are shown in Table 1. 1 and comparative tires 1 and 2 and a conventional tire were produced, respectively.
- rubber having a tan ⁇ of 0.2 at a temperature of 60 ° C was used for the rubber constituting the under-tread rubber layer and the wing tip rubber layer.
- the belt cover layer including the belt cover extending layer has a structure in which a strip material in which a nylon cord is covered with rubber is wound one by one with the edges of adjacent strip materials facing each other.
- Table 1 shows that the tire of the present invention can improve rolling resistance and uniformity.
- the tire size was the same as in Example 1, and the tan 5 at a temperature of 60 ° C. of the rubber structure of the tire structure, the belt cover extension layer or the belt cover extension layer, and the ratio h / SH ⁇ length y,
- the tires 2 to 6 of the present invention having the tan 5 at a temperature of 60 ° C of the rubber constituting the intersection point, the undertread rubber layer, the wing tip rubber layer and the belt edge cushion rubber layer as shown in Table 2 are shown below. Made.
- One layer of the belt cover in each test tire is composed of a strip of rubber coated with a reinforcing cord made of nylon cord wound spirally in the circumferential direction of the belt. The material was partially overlapped.
- the length of the belt cover extending layer or the belt cover layer extending from the edge of the first belt layer in the tire axial direction is 1 mm.
- (1) is tan 5, at 60 ° C, of the coated rubber of the extended portion of the belt cover
- (2) is 6 of the rubber that constitutes the standard rubber layer, wing tip rubber layer, and belt edge rubber layer. It is tan 5 at 0 ° C.
- the tires 2 and 3 of the present invention in which the adjacent strip materials are partially overlapped to form an extended portion or an extended layer of the belt cover do not have an overlapped structure. It can be seen that the rolling resistance can be improved as compared with the tire 1 of the present invention 1.
- the tire 4 of the present invention which is located on the inner side in the tire width direction from the intersection A ′, can further improve the rolling resistance than the tire 3 of the present invention having the same configuration except that it is located on the outside in the tire width direction.
- the tire 5 of the present invention in which tan 5 at a temperature of 60 ° C. of the rubber constituting the dust red rubber layer, the wing tip rubber layer, and the belt edge cushion rubber layer was reduced to 0.13, the tan ⁇ 5 was reduced to 0. It can be seen that the rolling resistance can be further improved as compared with the present invention roller 4 having the same configuration except for the case of.
- the tire 6 of the present invention having a longer length y of 16 mm can improve the uniformity than the tire 5 of the present invention having the same configuration except that the length y is 12 mm. You.
- the pneumatic tire of the present invention having the above-described excellent effects can be used very effectively as a pneumatic tire mounted on a vehicle, particularly a passenger car.
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- Mechanical Engineering (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/551,099 US7810534B2 (en) | 2003-04-04 | 2004-04-05 | Pneumatic tire |
JP2005505282A JP3744935B2 (ja) | 2003-04-04 | 2004-04-05 | 空気入りタイヤ |
EP04725819A EP1612057B1 (en) | 2003-04-04 | 2004-04-05 | Pneumatic tire |
DE602004026042T DE602004026042D1 (de) | 2003-04-04 | 2004-04-05 | Luftreifen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003101004 | 2003-04-04 | ||
JP2003-101004 | 2003-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004089656A1 true WO2004089656A1 (ja) | 2004-10-21 |
Family
ID=33156743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004902 WO2004089656A1 (ja) | 2003-04-04 | 2004-04-05 | 空気入りタイヤ |
Country Status (7)
Country | Link |
---|---|
US (1) | US7810534B2 (ja) |
EP (1) | EP1612057B1 (ja) |
JP (1) | JP3744935B2 (ja) |
KR (1) | KR101067636B1 (ja) |
CN (1) | CN100475562C (ja) |
DE (1) | DE602004026042D1 (ja) |
WO (1) | WO2004089656A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007045272A (ja) * | 2005-08-09 | 2007-02-22 | Honda Motor Co Ltd | 空気入りタイヤ |
JP2009067290A (ja) * | 2007-09-14 | 2009-04-02 | Bridgestone Corp | 空気入りタイヤ |
JP2012066628A (ja) * | 2010-09-21 | 2012-04-05 | Bridgestone Corp | 空気入りタイヤ |
US9333719B2 (en) | 2009-08-20 | 2016-05-10 | Bridgestone Corporation | Tire manufacturing method and tire |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5601137B2 (ja) * | 2010-10-06 | 2014-10-08 | 横浜ゴム株式会社 | 乗用車用空気入りタイヤ |
JP6058316B2 (ja) * | 2012-08-20 | 2017-01-11 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
DE112014006241B4 (de) * | 2014-01-23 | 2023-06-15 | The Yokohama Rubber Co., Ltd. | Luftreifen |
JP6581574B2 (ja) * | 2014-05-30 | 2019-09-25 | 株式会社ブリヂストン | 乗用車用空気入りラジアルタイヤ |
CN104309413B (zh) * | 2014-11-04 | 2016-11-30 | 中国化工集团曙光橡胶工业研究设计院有限公司 | 一种带束斜交航空轮胎 |
FR3033143B1 (fr) * | 2015-02-27 | 2017-02-24 | Michelin & Cie | Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves |
CN109866555A (zh) * | 2017-12-04 | 2019-06-11 | 正新橡胶工业股份有限公司 | 一种胎面优化结构的轮胎 |
DE102021212353A1 (de) | 2021-11-03 | 2023-05-04 | Continental Reifen Deutschland Gmbh | Formstabilisierter Fahrzeugluftreifen |
CN114013219A (zh) * | 2021-12-13 | 2022-02-08 | 山东兴鸿源轮胎有限公司 | 一种支撑式缺气保用轮胎 |
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2004
- 2004-04-05 JP JP2005505282A patent/JP3744935B2/ja not_active Expired - Fee Related
- 2004-04-05 KR KR1020057018761A patent/KR101067636B1/ko active IP Right Grant
- 2004-04-05 WO PCT/JP2004/004902 patent/WO2004089656A1/ja active Application Filing
- 2004-04-05 EP EP04725819A patent/EP1612057B1/en not_active Expired - Lifetime
- 2004-04-05 CN CNB2004800088110A patent/CN100475562C/zh not_active Expired - Fee Related
- 2004-04-05 US US10/551,099 patent/US7810534B2/en not_active Expired - Fee Related
- 2004-04-05 DE DE602004026042T patent/DE602004026042D1/de not_active Expired - Lifetime
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JPH0228003A (ja) * | 1988-07-18 | 1990-01-30 | Yokohama Rubber Co Ltd:The | 空気入りタイヤおよびその製造方法 |
JPH05147405A (ja) * | 1991-11-29 | 1993-06-15 | Toyo Tire & Rubber Co Ltd | ラジアルタイヤ |
JPH1134610A (ja) | 1997-07-16 | 1999-02-09 | Yokohama Rubber Co Ltd:The | 空気入りラジアルタイヤ |
JP2001163009A (ja) * | 1999-12-10 | 2001-06-19 | Bridgestone Corp | ラジアルタイヤ |
JP2001180225A (ja) | 1999-12-21 | 2001-07-03 | Bridgestone Corp | ラジアルタイヤ |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007045272A (ja) * | 2005-08-09 | 2007-02-22 | Honda Motor Co Ltd | 空気入りタイヤ |
JP4634888B2 (ja) * | 2005-08-09 | 2011-02-16 | 本田技研工業株式会社 | 空気入りタイヤ |
JP2009067290A (ja) * | 2007-09-14 | 2009-04-02 | Bridgestone Corp | 空気入りタイヤ |
US9333719B2 (en) | 2009-08-20 | 2016-05-10 | Bridgestone Corporation | Tire manufacturing method and tire |
JP2012066628A (ja) * | 2010-09-21 | 2012-04-05 | Bridgestone Corp | 空気入りタイヤ |
Also Published As
Publication number | Publication date |
---|---|
US7810534B2 (en) | 2010-10-12 |
DE602004026042D1 (de) | 2010-04-29 |
CN100475562C (zh) | 2009-04-08 |
CN1767958A (zh) | 2006-05-03 |
KR101067636B1 (ko) | 2011-09-27 |
EP1612057B1 (en) | 2010-03-17 |
US20060213596A1 (en) | 2006-09-28 |
KR20050114711A (ko) | 2005-12-06 |
JP3744935B2 (ja) | 2006-02-15 |
EP1612057A1 (en) | 2006-01-04 |
JPWO2004089656A1 (ja) | 2006-07-06 |
EP1612057A4 (en) | 2009-03-04 |
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