WO2015025824A1 - 空気入りタイヤ及び空気入りタイヤの製造方法 - Google Patents
空気入りタイヤ及び空気入りタイヤの製造方法 Download PDFInfo
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- WO2015025824A1 WO2015025824A1 PCT/JP2014/071590 JP2014071590W WO2015025824A1 WO 2015025824 A1 WO2015025824 A1 WO 2015025824A1 JP 2014071590 W JP2014071590 W JP 2014071590W WO 2015025824 A1 WO2015025824 A1 WO 2015025824A1
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- WIPO (PCT)
- Prior art keywords
- annular structure
- rubber layer
- fibers
- tread rubber
- fiber
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D30/3014—Applying the layers; Guiding or stretching the layers during application by sliding a preformed tubular layer over the drum
-
- 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
-
- 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
- B60C9/02—Carcasses
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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
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D2030/088—Building tyres by using a seamless tubular component, e.g. an inner liner, a carcass structure or a belt/breaker during tyre manufacturing on a core or a building drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
- B29D2030/3071—Venting air inclusions during the layer applications, e.g. by creating grooves, channels, passages, holes in the band-like tire component to be applied
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
-
- 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
- B60C2009/1878—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers with flat cushions or shear layers between the carcass and the belt
Definitions
- the present invention relates to a pneumatic tire and a method for manufacturing a pneumatic tire.
- the pneumatic tire includes a cylindrical annular structure, a rubber layer adjacent to the annular structure, and a carcass part adjacent to the annular structure as disclosed in, for example, Patent Document 1 and Patent Document 2.
- Pneumatic tires are known.
- An object of the present invention is to provide a pneumatic tire and a method for manufacturing a pneumatic tire in which deterioration in performance is suppressed.
- a pneumatic tire according to the present invention is arranged around a rotation shaft, and has a cylindrical annular structure having an outer surface and an inner surface, and at least a part of the rotation.
- the fibers are disposed between the annular structure and the rubber layer.
- the generation of the gas space in between is suppressed.
- the gas between the annular structure and the rubber layer is diffused between the annular structure and the rubber layer by the fibers.
- the fibers suppress the gas between the annular structure and the rubber layer from spreading uniformly between the annular structure and the rubber layer and staying in one place.
- at least a part of the gas diffused between the annular structure and the rubber layer is diffused (absorbed) into one or both of the rubber layer and the fiber.
- production of gas space is suppressed between an annular structure and a rubber layer. Therefore, the occurrence of poor adhesion between the annular structure and the rubber layer is suppressed, and the deterioration of the tire performance is suppressed.
- a plurality of the fibers may be disposed between the annular structure and the rubber layer.
- At least a part of the carcass part is arranged to face the inner surface of the annular structure, and the fibers are prevented from generating a gas space between the annular structure and the carcass part. You may arrange
- a pneumatic tire according to the present invention is arranged around a rotating shaft and has a cylindrical annular structure having an outer surface and an inner surface, and at least a part of the annular tire.
- a carcass portion having a cord covered with rubber and disposed opposite to the inner surface of the structure, a rubber layer including at least a portion facing the outer surface of the annular structure and including a tread portion;
- a fiber that is disposed between the annular structure and the carcass part and suppresses generation of a gas space between the annular structure and the carcass part.
- the fibers when the carcass portion is disposed so as to face the inner surface of the annular structure, the fibers are disposed between the annular structure and the carcass portion, thereby The generation of the gas space in between is suppressed.
- the gas between the annular structure and the carcass part is diffused between the annular structure and the carcass part by the fibers.
- the fibers suppress the gas between the annular structure and the carcass portion from being uniformly distributed between the annular structure and the carcass portion and staying in one place. Further, at least a part of the gas diffused between the annular structure and the carcass part is diffused (absorbed) into one or both of the carcass part and the fiber.
- a plurality of the fibers may be disposed between the annular structure and the carcass part.
- At least one fiber is arranged in a 100 mm square region on the surface of the annular structure, and five or more fibers may not be arranged in a 10 mm square region on the surface of the annular structure.
- the fiber linear density may be 1 ⁇ 10 ⁇ 6 g / mm or more and 1 ⁇ 10 ⁇ 4 g / mm or less, and the fiber diameter may be 0.03 mm or more and 1.00 mm or less.
- the annular structure may have a plurality of through holes penetrating the outer surface and the inner surface.
- the fiber may be arranged so as to surround the rotation shaft.
- the fibers may be arranged in parallel with the rotation axis.
- the fiber is shorter than the dimension of the annular structure in a direction parallel to the rotation axis and the dimension of the annular structure in a direction around the rotation axis, and is parallel to the rotation axis and around the rotation axis.
- a plurality may be arranged with the same density in each of the directions.
- a method for manufacturing a pneumatic tire according to the present invention is a procedure for creating a cylindrical annular structure having an outer surface and an inner surface, which is disposed around a rotating shaft.
- a procedure of disposing at least a part of the carcass part having a cord covered with rubber outside the annular structure in a direction parallel to the rotation axis, at least a part of the rubber layer including the tread part, and the annular part A step of disposing a fiber between the outer surface of the structure and causing at least a part of the rubber layer to face the outer surface of the annular structure; and the fiber between the annular structure and the rubber layer. Vulcanizing the rubber layer in a disposed state, and suppressing the generation of a gas space between the annular structure and the rubber layer, and combining the rubber layer and the annular structure; including.
- the fibers are disposed between the annular structure and the rubber layer.
- the generation of the gas space in between is suppressed.
- the gas between the annular structure and the rubber layer is diffused between the annular structure and the rubber layer by the fibers.
- the fibers suppress the gas between the annular structure and the rubber layer from spreading uniformly between the annular structure and the rubber layer and staying in one place.
- at least a part of the gas diffused between the annular structure and the rubber layer is diffused (absorbed) into one or both of the rubber layer and the fiber.
- production of gas space is suppressed between an annular structure and a rubber layer. Therefore, the occurrence of poor adhesion between the annular structure and the rubber layer is suppressed, and the deterioration of the tire performance is suppressed.
- a method for manufacturing a pneumatic tire according to the present invention is a procedure for creating a cylindrical annular structure having an outer surface and an inner surface, which is disposed around a rotating shaft.
- a procedure for disposing at least a part of the rubber layer including the tread so as to face the outer surface of the annular structure, at least a part of the carcass part having a cord covered with rubber, and an inner surface of the annular structure And a state in which the fibers are disposed between the annular structure and the carcass part, and a procedure for disposing at least a part of the carcass part and an inner surface of the annular structure.
- vulcanizing the carcass portion to suppress the generation of a gas space between the annular structure and the carcass portion, and combining the carcass portion and the annular structure.
- the fibers when the carcass portion is disposed so as to face the inner surface of the annular structure, the fibers are disposed between the annular structure and the carcass portion, thereby The generation of the gas space in between is suppressed.
- the gas between the annular structure and the carcass part is diffused between the annular structure and the carcass part by the fibers.
- the fibers suppress the gas between the annular structure and the carcass portion from being uniformly distributed between the annular structure and the carcass portion and staying in one place. Further, at least a part of the gas diffused between the annular structure and the carcass part is diffused (absorbed) into one or both of the carcass part and the fiber.
- FIG. 1 is a cross-sectional view showing a part of the tire according to the first embodiment.
- FIG. 2 is a diagram illustrating an example of the carcass portion according to the first embodiment.
- FIG. 3 is an exploded perspective view schematically showing an example of the tire according to the first embodiment.
- FIG. 4 is a flowchart showing an example of a tire manufacturing method according to the first embodiment.
- FIG. 5 is a perspective view schematically showing a part of the tire according to the second embodiment.
- FIG. 6 is a perspective view schematically showing a part of the tire according to the third embodiment.
- FIG. 7 is a perspective view schematically showing a part of the tire according to the fourth embodiment.
- FIG. 8 is a perspective view schematically showing a part of the tire according to the fifth embodiment.
- FIG. 9 is a perspective view schematically showing a part of the tire according to the sixth embodiment.
- FIG. 10 is a perspective view schematically showing a part of the tire according to the seventh embodiment.
- FIG. 11 is a perspective view schematically showing a part of the tire according to the eighth embodiment.
- FIG. 12 is a perspective view schematically showing a part of the tire according to the ninth embodiment.
- FIG. 13 is an exploded perspective view schematically showing an example of a tire according to the tenth embodiment.
- FIG. 14 is a diagram schematically showing a part of the tire according to the eleventh embodiment.
- FIG. 15 is a diagram schematically illustrating a part of the tire according to the twelfth embodiment.
- FIG. 16 is a diagram schematically illustrating a part of the tire according to the thirteenth embodiment.
- FIG. 17 is a view schematically showing a part of the tire according to the fourteenth embodiment.
- FIG. 18 is a diagram schematically illustrating an example of an annular structure according to the fifteenth embodiment.
- FIG. 19 is a diagram schematically illustrating an example of an annular structure according to the sixteenth embodiment.
- FIG. 20 is a diagram schematically illustrating an example of an annular structure according to the seventeenth embodiment.
- FIG. 21 is a diagram schematically illustrating an example of an annular structure according to the eighteenth embodiment.
- FIG. 22 is a diagram schematically illustrating an example of an annular structure according to the nineteenth embodiment.
- FIG. 23 is a diagram schematically illustrating a part of the tire according to the twentieth embodiment.
- FIG. 20 is a diagram schematically illustrating an example of an annular structure according to the seventeenth embodiment.
- FIG. 21 is a diagram schematically illustrating an example of an annular structure according to the eighteenth embodiment.
- FIG. 22 is a diagram schematically illustrating an
- FIG. 24 is a diagram schematically illustrating a part of the tire according to the twenty-first embodiment.
- FIG. 25 is a diagram schematically illustrating a part of the tire according to the twenty-second embodiment.
- FIG. 26 is a diagram showing an example of test results of examples and comparative examples according to the present invention.
- an XYZ orthogonal coordinate system is set, and the positional relationship of each part will be described with reference to this XYZ orthogonal coordinate system.
- One direction in the horizontal plane is defined as the X-axis direction
- a direction orthogonal to the X-axis direction in the horizontal plane is defined as the Y-axis direction
- a direction orthogonal to each of the X-axis direction and the Y-axis direction is defined as the Z-axis direction.
- the rotation (inclination) directions around the X axis, Y axis, and Z axis are the ⁇ X, ⁇ Y, and ⁇ Z directions, respectively.
- the rotation axis (center axis) of the tire 1 and the Y axis are parallel.
- the Y-axis direction is the vehicle width direction or the width direction of the tire 1.
- the rotation direction (corresponding to the ⁇ Y direction) of the tire 1 (the rotation axis of the tire 1) may be referred to as a circumferential direction.
- the X-axis direction and the Z-axis direction are radial directions with respect to the rotation axis (center axis).
- the radial direction with respect to the rotation axis (center axis) may be referred to as a radial direction.
- the ground on which the tire 1 rolls (runs) is substantially parallel to the XY plane.
- FIG. 1 is a diagram illustrating an example of a tire 1 according to the present embodiment.
- FIG. 1 shows a meridional section through the rotation axis J of the tire 1.
- the rotation axis J is parallel to the Y axis.
- the tire 1 is annular.
- the rotation axis J is the central axis of the tire 1.
- the inside of the tire 1 is filled with gas.
- the gas filled in the tire 1 is air. That is, the tire 1 is a pneumatic tire.
- a tire 1 includes a cylindrical annular structure 10 disposed around a rotation axis (center axis) J, and a carcass portion at least a part of which is disposed outside the annular structure 10 in the Y-axis direction. 12, a tread rubber layer 11 at least part of which is disposed outside the annular structure 10 with respect to the rotation axis J, a sidewall rubber layer 7 that protects the carcass portion 12, and the annular structure 10 and the tread rubber layer. 11 and a fiber 2 for suppressing generation of a gas space between the annular structure 10 and the tread rubber layer 11.
- the annular structure 10 is a cylindrical member.
- the annular structure 10 is a member (strength member) that holds the shape of the tire 1.
- the annular structure 10 has an outer surface 10A and an inner surface 10B.
- the outer surface 10A faces outward with respect to the radial direction with respect to the rotation axis J.
- the inner surface 10B faces in the opposite direction to the outer surface 10A.
- Each of the outer surface 10A and the inner surface 10B is parallel to the Y axis (rotation axis J).
- the annular structure 10 is made of metal.
- the annular structure 10 is made of a metal material.
- the annular structure 10 may include at least one of spring steel, high-tensile steel, stainless steel, and titanium. Titanium may include a titanium alloy.
- Tensile strength of the metal material of the annular structure 10 may be a 450 N / m 2 or more 2500N / m 2 or less, may be a 600N / m 2 or more 2400 N / m 2 or less, 800 N / m 2 or more 2300N / m 2 or less But you can.
- the annular structure 10 includes stainless steel.
- Stainless steel has high corrosion resistance. Stainless steel can obtain the above-described numerical tensile strength.
- the pressure resistance parameter of the annular structure 10 defined by the product of the tensile strength (MPa) and the thickness (mm) of the annular structure 10 may be 200 or more and 1700 or less, or 250 or more and 1600 or less.
- the pressure resistance parameter is a measure of the resistance to the internal pressure of the gas filled in the tire 1.
- the pressure resistance parameter of the annular structure 10 of the tire 1 used for a passenger car may be 200 or more and 1000 or less, or 250 or more and 950 or less.
- the pressure resistance parameter of the annular structure 10 of the tire 1 used as a truck / bus tire (TB tire) may be 500 or more and 1700 or less, or 600 or more and 1600 or less.
- the annular structure 10 is manufactured from stainless steel, at least of martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, austenitic / ferritic duplex stainless steel, and precipitation hardening stainless steel in the classification of JIS G4303. One may be used.
- stainless steel By using stainless steel, the annular structure 10 having high tensile strength and toughness can be manufactured.
- the carcass portion 12 is a member (strength member) that forms the skeleton of the tire 1.
- the carcass portion 12 includes a cord (reinforcing material).
- the cord of the carcass portion 12 may be referred to as a carcass cord.
- the carcass portion 12 is a cord layer (reinforcing material layer) including a cord.
- the carcass portion 12 functions as a pressure vessel when the tire 1 is filled with gas (air).
- FIG. 2 is an enlarged view of a part of the carcass portion 12.
- the carcass portion 12 includes a rubber 12R and a cord 12F covered with the rubber 12R.
- the code 12F includes an organic fiber.
- the rubber 12R that covers the cord 12F may be referred to as a coat rubber or a topping rubber.
- the carcass portion 12 may include a polyester cord 12F, a polyamide cord 12F including an aliphatic skeleton, a polyamide cord 12F including only an aromatic skeleton, or a rayon cord. 12F may be included.
- At least a part of the carcass portion 12 is disposed outside the annular structure 10 in the Y-axis direction.
- at least a part of the carcass portion 12 is disposed on the inner surface 10 ⁇ / b> B side of the annular structure 10.
- At least a part of the carcass portion 12 is disposed inside the annular structure 10 with respect to the radial direction with respect to the rotation axis J.
- At least a part of the carcass portion 12 is disposed so as to face the inner surface 10B of the annular structure 10.
- the carcass portion 12 has an outer surface 12A that faces the inner surface 10B of the annular structure 10.
- the inner surface 10B of the annular structure 10 and at least a part of the outer surface 12A of the carcass portion 12 are in contact with each other.
- the annular structure 10 and the carcass portion 12 are coupled.
- the carcass part 12 is supported by the bead core 13.
- the bead cores 13 are arranged on one side and the other side of the carcass part 12 in the Y-axis direction.
- the carcass portion 12 is folded back at the bead core 13.
- the bead core 13 is a member (strength member) that fixes one end and the other end of the carcass portion 12 in the Y-axis direction.
- the bead core 13 fixes the tire 1 to the rim of the wheel.
- the bead core 13 is a bundle of steel wires.
- the bead core 13 may be a bundle of carbon steel.
- the carcass portion 12 has an inner liner 14 on the inner side. The inner liner 14 suppresses leakage of the gas filled in the tire 1.
- the tread rubber layer 11 protects the carcass portion 12.
- the tread rubber layer 11 is a cylindrical member. At least a part of the tread rubber layer 11 is disposed around the carcass portion 12.
- the tread rubber layer 11 has an outer surface 11A and an inner surface 11B.
- the outer surface 11A faces outward with respect to the radial direction with respect to the rotation axis J.
- the inner surface 11B faces in the direction opposite to the outer surface 11A.
- Each of the outer surface 11A and the inner surface 11B is parallel to the Y axis (rotation axis J).
- the outer surface 11A is a tread surface (tread portion) that comes into contact with the ground.
- the tread rubber layer 11 has an outer surface (tread surface) 11A that comes into contact with the ground, and a groove portion 11M formed on at least a part of the outer surface 11A. When the tire 1 rolls on the wet ground such as in the rain, the groove 11M can remove water from between the tire 1 and the ground.
- the tread rubber layer 11 contains natural rubber, synthetic rubber, carbon black, sulfur, zinc white, crack preventing material, vulcanization accelerator, and anti-aging agent.
- At least a part of the tread rubber layer 11 is disposed on the outer surface 10A side of the annular structure 10. At least a part of the tread rubber layer 11 is disposed outside the annular structure 10 in the radial direction with respect to the rotation axis J. At least a part of the tread rubber layer 11 is disposed so as to face the outer surface 10A of the annular structure 10. At least a part of the inner surface 11B of the tread rubber layer 11 faces the outer surface 10A of the annular structure 10. The outer surface 10A of the annular structure 10 and at least a part of the inner surface 11B of the tread rubber layer 11 are in contact with each other. The annular structure 10 and the tread rubber layer 11 are combined.
- the rotation axis J, the outer surface 10A of the annular structure 10, the inner surface 10B of the annular structure 10, the outer surface 11A of the tread rubber layer 11, and the inner surface 11B of the tread rubber layer 11 are substantially Parallel.
- the sidewall rubber layer 7 protects the carcass portion 12.
- the sidewall rubber layer 7 is disposed on each of one side and the other side of the tread rubber layer 11 with respect to the Y-axis direction.
- the sidewall rubber layer 7 has a sidewall portion 7A.
- the fiber 2 suppresses generation of a gas space between the annular structure 10 and the tread rubber layer 11.
- the fiber 2 is disposed on the outer surface 10A side of the annular structure 10.
- the fiber 2 is disposed between the annular structure 10 and the tread rubber layer 11.
- a plurality of the fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11.
- the plurality of fibers 2 form one layer.
- the plurality of fibers 2 may be combined and referred to as a fiber layer.
- Fiber 2 includes one or both of natural fiber and chemical fiber.
- Natural fibers include at least one of plant fibers, animal fibers, and mineral fibers.
- the plant fiber includes at least one of cotton, hemp, and linen.
- Animal fibers include at least one of wool, silk, and cashmere.
- Mineral fibers include asbestos.
- Chemical fibers are regenerated fibers that are produced from natural fibers (natural polymers), semi-synthetic fibers that are produced by modifying natural polymers, synthetic fibers that are purely synthetically produced organic polymer compounds, and It contains at least one inorganic fiber made of an inorganic compound.
- the regenerated fiber includes a cellulosic regenerated fiber.
- the semi-synthetic fiber includes at least one of a cellulose-based semi-synthetic fiber and a protein-based synthetic fiber.
- the synthetic fiber includes at least one of a polyester-based synthetic fiber and a polyamide-based synthetic fiber.
- the inorganic fiber includes at least one of glass fiber and carbon fiber.
- the fiber 2 may be a thread-like member (so-called multifilament) in which at least one of natural fiber and chemical fiber is aligned and twisted, or may be a single fiber (so-called monofilament).
- the fibers 2 disposed between the annular structure 10 and the tread rubber layer 11 may be the same type of fibers or may include a plurality of different types of fibers. In the present embodiment, the fiber 2 includes cotton (cotton).
- the fiber 2 has a linear density of 1 ⁇ 10 ⁇ 6 g / mm or more and 1 ⁇ 10 ⁇ 4 g / mm or less.
- the diameter of the fiber 2 is 0.03 mm or more and 1.00 mm or less.
- FIG. 3 is an exploded perspective view schematically showing an example of the tire 1 according to the present embodiment.
- the annular structure 10 is a cylindrical member disposed around the rotation axis (center axis) J.
- the annular structure 10 has an inner surface 10B disposed so as to face the rotation axis J, and an outer surface 10A facing in the direction opposite to the inner surface 10B.
- the tread rubber layer 11 is an annular member disposed around the annular structure 10. In FIG. 3, a part of the tread rubber layer 11 is schematically shown. Further, in FIG. 3, illustration of the carcass portion 12 is omitted.
- a plurality of fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11.
- the fiber 2 is disposed on the outer surface 10 ⁇ / b> A of the annular structure 10.
- each of the plurality of fibers 2 is arranged in parallel with the rotation axis J (Y axis). Regarding the Y-axis direction, the dimensions of the annular structure 10 and the dimensions of the fiber 2 are equal.
- Each of the plurality of fibers 2 is arranged separately. That is, the plurality of fibers 2 are arranged at intervals.
- the plurality of fibers 2 are arranged at intervals with respect to the circumferential direction ( ⁇ Y direction) of the outer surface 10A of the annular structure 10.
- the plurality of fibers 2 are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the outer surface 10A.
- the distance (interval) between adjacent fibers 2 is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2 may be set to 10 mm or more and 50 mm or less.
- At least one fiber 2 is disposed in a 100 mm square region on the outer surface 10A of the annular structure 10. Five or more fibers 2 are not arranged in a 10 mm square region on the outer surface 10A of the annular structure 10.
- FIG. 4 is a flowchart showing an example of a method for manufacturing the tire 1 according to this embodiment.
- the manufacturing method of the tire 1 includes a material processing step (step S ⁇ b> 1) for processing a material to create a constituent member of the tire 1, and a constituent member of the tire 1.
- step S1 The material processing step (step S1) will be described.
- at least the annular structure 10, the carcass portion 12, the tread rubber layer 11, and the fibers 2 are created as constituent members of the tire 1 in the material processing step.
- a cylindrical annular structure 10 having an outer surface 10A and an inner surface 10B is created through a step of removing a convex portion generated by welding. Note that at least one of the outer surface 10A and the inner surface 10B may be roughened.
- a cord 12F covered with rubber 12R is obtained through a step of weaving a cord (carcass cord) in a strip shape, a step of immersing the cord woven in the strip shape into a chemical, and a step of covering the cord with rubber.
- a carcass portion 12 is created.
- the tread rubber layer 11 is formed through a process of mixing raw materials such as natural rubber, synthetic rubber, carbon black, and sulfur and a process of extruding the generated rubber.
- a plurality of fibers 2 are created (prepared).
- step S2 The components of the tire 1 such as the annular structure 10, the carcass portion 12, the tread rubber layer 11, and the fibers 2 created in step S1 are molded by a molding machine, and the prototype of the tire 1 is assembled.
- the prototype of the tire 1 includes an unvulcanized green tire (green tire).
- at least a part of the carcass portion 12 is disposed outside the annular structure 10 in the Y-axis direction, and between the at least a part of the tread rubber layer 11 and the outer surface 10A of the annular structure 10.
- the step of disposing the fibers 2 to make at least a part of the tread rubber layer 11 and the outer surface 10A of the annular structure 10 face each other is performed.
- at least a part of the carcass portion 12 is disposed so as to face the inner surface 10 ⁇ / b> B of the annular structure 10.
- an adhesive is provided on the outer surface 10A of the annular structure 10.
- an adhesive layer is formed on the outer surface 10A.
- the fibers 2 are arranged so as to face the outer surface 10 ⁇ / b> A of the annular structure 10.
- the fiber 2 is disposed on the outer surface 10A provided with an adhesive.
- the plurality of fibers 2 are arranged parallel to the Y axis on the outer surface 10A.
- the plurality of fibers 2 are arranged in the circumferential direction at intervals on the outer surface 10A. Since the adhesive is provided on the outer surface 10A, the position of the fiber 2 is fixed on the outer surface 10A.
- an adhesive layer may be provided on the primer layer.
- the fibers 2 are arranged on the outer surface 10A provided with the adhesive layer, at least a part of the tread rubber layer 11 is arranged to face the outer surface 10A of the annular structure 10.
- the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are joined via an adhesive layer.
- the tread rubber layer 11 and the annular structure 10 are bonded together in a state where the plurality of fibers 2 are disposed between the inner surface 11B of the tread rubber layer 11 and the outer surface 10A of the annular structure 10.
- the carcass portion 12 is disposed so as to face the inner surface 10B of the annular structure 10.
- the inner surface 10B of the annular structure 10 and the outer surface 12A of the carcass portion 12 are joined via an adhesive layer. Further, the carcass portion 12 and the sidewall rubber layer 7 are joined.
- the annular structure 10 and the tread rubber layer 11 are in a state where the fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11. It may be joined.
- the annular structure 10 and the tread rubber layer 11 are joined in a state where the fibers 2 are disposed between the annular structure 10 and the tread rubber layer 11, the annular structure 10 and the carcass portion 12 are joined together. It may be joined. Note that the joining of the annular structure 10 and the tread rubber layer 11 and the joining of the annular structure 10 and the carcass portion 12 may be performed simultaneously.
- the fibers 2 and the outer surface 10 ⁇ / b> A of the annular structure 10 may be opposed to each other, or the tread rubber layer 11 and the outer surface 10A of the annular structure 10 are opposed to each other, and then the fibers 2 and the ring
- the outer surface 10A of the structure 10 may be opposed, or the tread rubber layer 11 and the outer surface 10A of the annular structure 10 are opposed at the same time as the fibers 2 and the outer surface 10A of the annular structure 10 are opposed. Also good.
- step S3 the vulcanization process (step S3) will be described.
- step S3 After the green tire is manufactured in step S2, heat and pressure are applied to the green tire.
- a vulcanization step of applying heat and pressure to the green tire is performed in a state where the fibers 2 are disposed between the tread rubber layer 11 and the annular structure 10.
- the green tire In the vulcanization process, the green tire is placed inside the mold, and heat and pressure are applied to the green tire by a compression device. Due to heat and pressure, rubber molecules and sulfur molecules are bonded, and elasticity and durability are imparted to the rubber of the green tire. Moreover, the tread rubber layer 11 and the annular structure 10 are combined by the vulcanization process. Moreover, the carcass part 12 and the annular structure 10 are couple
- the vulcanization process is performed in a state where the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are in contact with each other.
- gas air
- step S3 When the vulcanization step (step S3) is performed in a state in which gas (air) has entered between the tread rubber layer 11 and the annular structure 10, the gas between the tread rubber layer 11 and the annular structure 10 ( Air) expands, and there is a possibility that a gas space (air pool) is generated between the tread rubber layer 11 and the annular structure 10.
- a gas space may be generated between the tread rubber layer 11 and the annular structure 10 not only in the molding process (step S2).
- the annular structure 10 is made of metal, and the outer surface 10A is a metal surface. Therefore, when gas (air) enters between the tread rubber layer 11 and the annular structure 10, it is difficult for the gas (air) that enters into the structure to be discharged from between the tread rubber layer 11 and the annular structure 10. Is likely to be.
- the fiber 2 is disposed between the annular structure 10 and the tread rubber layer 11.
- the fibers 2 By arranging the fibers 2, the generation of a gas space (air pocket) between the annular structure 10 and the tread rubber layer 11 is suppressed.
- the gas between the annular structure 10 and the tread rubber layer 11 is between the annular structure 10 and the tread rubber layer 11. Diffused in For example, the fibers 2 suppress the gas between the annular structure 10 and the tread rubber layer 11 from being uniformly distributed between the annular structure 10 and the tread rubber layer 11 and staying in one place. Further, there is a possibility that at least a part of the gas between the annular structure 10 and the tread rubber layer 11 is guided by the fiber 2 and moves outside the space between the annular structure 10 and the tread rubber layer 11. There is.
- At least part of the gas diffused between the annular structure 10 and the tread rubber layer 11 may be diffused (absorbed) into one or both of the tread rubber layer 11 and the fiber 2. Thereby, generation
- the gas between the annular structure 10 and the tread rubber layer 11 is diffused by the fibers 2.
- the annular structure Before the gas space is expanded by performing a vulcanization process including vulcanization of the tread rubber layer 11 in a state where the fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11, the annular structure The gas between the body 10 and the tread rubber layer 11 is diffused. Thereby, the production
- the inner surface 11 ⁇ / b> B of the tread rubber layer 11 is deformed into a shape along the shape of the fiber 2.
- the contact area of the inner surface 11B of the tread rubber layer 11 and the gas increases.
- the gas is diffused (absorbed) into the tread rubber layer 11. Therefore, generation of a gas space between the annular structure 10 and the tread rubber layer 11 is suppressed.
- a thread-like member in which a plurality of fibers are aligned and twisted as the fiber 2, at least a part of the gas between the tread rubber layer 11 and the annular structure 10 is used. Is diffused (absorbed) inside the fiber 2.
- the tire 1 as shown in FIG. 1 is manufactured by performing the vulcanization process in a state where the fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11. As shown in FIG. 1, in the present embodiment, the annular structure 10 and the fiber 2 are not exposed from the outer surface of the tire 1.
- the annular structure 10 and the fiber 2 include a tread rubber layer 11 (rubber of the tread rubber layer 11), a sidewall rubber layer 7 (rubber of the sidewall rubber layer 7), and a carcass portion 12 (rubber of the carcass portion 12).
- the rubber is embedded in the tire 1.
- a plurality of fibers 2 are arranged between the annular structure 10 and the tread rubber layer 11. Thereby, it is suppressed that a gas space is generated in most of the space between the annular structure 10 and the tread rubber layer 11.
- a thread-like member in which a plurality of fibers are aligned and twisted as the fiber 2
- at least a part of the gas between the tread rubber layer 11 and the annular structure 10 is used. Is diffused (absorbed) inside the fiber 2.
- the contact area of the fiber 2 and gas becomes large. Therefore, even if a gas exists between the annular structure 10 and the tread rubber layer 11, a gas space is generated between the annular structure 10 and the tread rubber layer 11 by the fibers 2 absorbing the gas. Is suppressed.
- At least one fiber 2 is arranged in a 100 mm square region on the outer surface 10A of the annular structure 10, and five or more fibers 2 are not arranged in a 10 mm square region on the outer surface 10A of the annular structure 10.
- no fiber 2 is arranged in a 100 mm square region, there is a high possibility that the generation of the gas space cannot be suppressed.
- the adhesive strength between the annular structure 10 and the tread rubber layer 11 may be reduced.
- At least one fiber 2 is arranged in a 100 mm square region on the outer surface 10A of the annular structure 10, and five or more fibers 2 are arranged in a 10 mm square region on the outer surface 10A of the annular structure 10. Since it did not do, the fall of the adhesive strength of the cyclic structure 10 and the tread rubber layer 11 can be suppressed, suppressing the production
- the linear density of the fiber 2 is 1 ⁇ 10 ⁇ 6 g / mm or more and 1 ⁇ 10 ⁇ 4 g / mm or less, and the diameter of the fiber 2 is 0.03 mm or more and 1.00 mm or less. It is.
- the linear density of the fiber 2 is smaller than 1 ⁇ 10 ⁇ 6 g / mm, there is a high possibility that the gas cannot be sufficiently diffused and the generation of the gas space cannot be suppressed.
- the linear density of the fiber 2 is larger than 1 ⁇ 10 ⁇ 4 g / mm, the adhesive strength between the annular structure 10 and the tread rubber layer 11 may be lowered.
- the diameter of the fiber 2 is smaller than 0.03 mm, there is a high possibility that the gas cannot be sufficiently diffused and the generation of the gas space cannot be suppressed.
- the diameter of the fiber 2 is larger than 1.00 mm, the adhesive strength between the annular structure 10 and the tread rubber layer 11 may be reduced.
- the linear density of the fiber 2 is 1 ⁇ 10 ⁇ 6 g / mm or more and 1 ⁇ 10 ⁇ 4 g / mm or less, and the diameter of the fiber 2 is 0.03 mm or more and 1.00 mm or less.
- FIG. 5 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2B according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- the fiber 2 ⁇ / b> B is disposed on the outer surface 10 ⁇ / b> A of the annular structure 10.
- a plurality of the fibers 2B are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2B is arranged in parallel with the rotation axis J (Y axis). With respect to the Y-axis direction, the dimension of the fiber 2B is larger than the dimension of the annular structure 10.
- Each of the plurality of fibers 2B is arranged separately.
- the plurality of fibers 2B are arranged at intervals with respect to the circumferential direction ( ⁇ Y direction) of the outer surface 10A of the annular structure 10.
- the plurality of fibers 2B are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the outer surface 10A.
- the distance (interval) between the adjacent fibers 2B is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2B may be set to 10 mm or more and 50 mm or less.
- the + Y side end of the fiber 2B is arranged on the + Y side with respect to the + Y side edge of the annular structure 10, and the ⁇ Y side end of the fiber 2B is the annular structure 10.
- the fibers 2B are arranged so as to face the outer surface 10A of the annular structure 10 so as to be arranged on the ⁇ Y side with respect to the ⁇ Y side edge. That is, the + Y side end of the fiber 2B protrudes from the + Y side edge of the annular structure 10, and the ⁇ Y side end of the fiber 2B protrudes from the ⁇ Y side edge of the annular structure 10.
- the fibers 2B are disposed on the outer surface 10A of the annular structure 10.
- step S3 is performed in a state where the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are in contact with each other.
- the fibers 2B are arranged between the annular structure 10 and the tread rubber layer 11, in the manufacturing process of the tire 1 including the molding process (step S2) and the vulcanization process (step S3), the annular structure 10 and the tread. Generation of a gas space with the rubber layer 11 is suppressed.
- the gas between the annular structure 10 and the tread rubber layer 11 is caused between the annular structure 10 and the tread rubber layer 11 by the fibers 2 ⁇ / b> B arranged between the annular structure 10 and the tread rubber layer 11.
- the + Y side end portion and the ⁇ Y side end portion of the fiber 2B are arranged outside the edge of the annular structure 10. That is, the + Y side end and the ⁇ Y side end of the fiber 2B are disposed outside the space between the annular structure 10 and the tread rubber layer 11.
- the fiber 2 ⁇ / b> B moves outside the space between the annular structure 10 and the tread rubber layer 11.
- the fiber 2 ⁇ / b> B guides at least a part of the gas between the annular structure 10 and the tread rubber layer 11 to escape outside the space between the annular structure 10 and the tread rubber layer 11. . Thereby, generation
- the tire 1 is manufactured by performing the vulcanization process in a state where the fibers 2B are disposed between the annular structure 10 and the tread rubber layer 11.
- at least one of the + Y side end and the ⁇ Y side end of the fiber 2B may protrude (expose) from the outer surface of the tire 1.
- the annular structure 10 and the fibers 2B may be embedded in the rubber of the tire 1 without protruding (exposed) from the outer surface of the tire 1.
- the fibers 2B between the annular structure 10 and the tread rubber layer 11 can be reduced. Generation is suppressed. Therefore, the occurrence of poor adhesion between the annular structure 10 and the tread rubber layer 11 is suppressed, and the deterioration of the performance of the tire 1 is suppressed.
- FIG. 6 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2C according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- the fiber 2 ⁇ / b> C is disposed on the outer surface 10 ⁇ / b> A of the annular structure 10.
- a plurality of the fibers 2C are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2C is disposed so as to surround the rotation axis J.
- Each of the plurality of fibers 2C is arranged separately. That is, the plurality of fibers 2C are arranged at intervals.
- the plurality of fibers 2 ⁇ / b> C are arranged on the outer surface 10 ⁇ / b> A of the annular structure 10 at intervals with respect to the Y-axis direction.
- the plurality of fibers 2C are arranged at equal intervals in the Y-axis direction.
- the distance (interval) between the adjacent fibers 2C is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2C may be set to 10 mm or more and 50 mm or less.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by arranging the fibers 2C between the annular structure 10 and the tread rubber layer 11.
- FIG. 7 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2D according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- the fiber 2D is disposed on the outer surface 10A of the annular structure 10.
- a plurality of fibers 2D are disposed between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2D is arranged to be inclined with respect to the rotation axis J (Y axis).
- Each of the plurality of fibers 2D is arranged separately. That is, the plurality of fibers 2D are arranged at intervals.
- the plurality of fibers 2D are arranged on the outer surface 10A of the annular structure 10 with an interval in the circumferential direction of the outer surface 10A. In the present embodiment, the plurality of fibers 2D are arranged at equal intervals in the circumferential direction of the outer surface 10A.
- the distance (interval) between the adjacent fibers 2D is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2D may be set to 10 mm or more and 50 mm or less.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by disposing the fibers 2D between the annular structure 10 and the tread rubber layer 11.
- FIG. 8 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2E according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- the fiber 2 ⁇ / b> E is disposed on the outer surface 10 ⁇ / b> A of the annular structure 10.
- a plurality of fibers 2E are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2E is disposed so as to surround the rotation axis J.
- each of the plurality of fibers 2E has a bent portion.
- a plurality of bent portions are provided in the fiber 2E in the circumferential direction.
- the bent portion includes a first bent portion that bends so that at least a portion of the fiber 2E protrudes toward the + Y side, and a second bent portion that bends so that at least a portion of the fiber 2E protrudes toward the ⁇ Y side. .
- the first bent portion and the second bent portion are provided alternately.
- Each of the plurality of fibers 2E is arranged separately. That is, the plurality of fibers 2E are arranged at intervals.
- the plurality of fibers 2E are arranged on the outer surface 10A of the annular structure 10 with an interval with respect to the Y-axis direction. In the present embodiment, the plurality of fibers 2E are arranged at equal intervals in the Y-axis direction.
- the distance (interval) between the adjacent fibers 2E is set to 5 mm or more and 80 mm or less.
- the distance (interval) between adjacent fibers 2E may be set to 10 mm or more and 50 mm or less.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by arranging the fibers 2E between the annular structure 10 and the tread rubber layer 11.
- FIG. 9 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2F according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- the length of the fiber 2F is short.
- the fiber 2F is a so-called short fiber.
- the fiber 2F is shorter than the dimension of the annular structure 10 in the Y-axis direction and the dimension of the annular structure 10 in the circumferential direction (direction around the rotation axis J).
- the fiber 2F is disposed on the outer surface 10A of the annular structure 10.
- a plurality of the fibers 2F are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2F is arranged separately. That is, the plurality of fibers 2F are arranged at intervals.
- a plurality of the fibers 2F are arranged with substantially the same density in each of the Y axis direction and the direction around the rotation axis J. In other words, the plurality of fibers 2F are uniformly arranged on the outer surface 10A.
- the fibers 2F may be premixed in the adhesive.
- An adhesive layer containing the fibers 2F may be formed on the outer surface 10A by providing the outer surface 10A with an adhesive in which the fibers 2F are mixed (dispersed).
- the fiber 2F may be mixed in advance with a solution (primer solution) for forming the primer layer.
- the fibers 2F may be premixed in both the adhesive and the primer solution.
- the adhesive layer and the fibers 2F are arranged on the outer surface 10A, at least a part of the tread rubber layer 11 is arranged so as to face the outer surface 10A of the annular structure 10.
- the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are joined via an adhesive layer.
- the tread rubber layer 11 and the annular structure 10 are joined together in a state where the plurality of fibers 2F are disposed between the inner surface 11B of the tread rubber layer 11 and the outer surface 10A of the annular structure 10.
- the annular structure 10 since the gas is diffused between the annular structure 10 and the tread rubber layer 11 by the fibers 2F arranged between the annular structure 10 and the tread rubber layer 11, the annular structure 10 And the generation of gas space between the tread rubber layer 11 is suppressed.
- FIG. 10 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2G according to the present embodiment.
- the tread rubber layer 11 and the carcass portion 12 are not shown.
- the fiber 2G is disposed on the outer surface 10A of the annular structure 10.
- a plurality of the fibers 2G are arranged between the annular structure 10 and the tread rubber layer 11. Some of the plurality of fibers 2G are arranged so as to surround the rotation axis J. Some of the plurality of fibers 2G are arranged in parallel with the rotation axis J.
- the fibers 2G are knitted in a mesh before being arranged on the outer surface 10A.
- the fibers 2 ⁇ / b> G formed in a mesh shape are disposed on the outer surface 10 ⁇ / b> A of the annular structure 10.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by arranging the fibers 2G between the annular structure 10 and the tread rubber layer 11.
- FIG. 11 is a perspective view schematically showing an example of the annular structure 10 and the fiber 2H according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- At least a part of the fiber 2H is disposed on the outer surface 10A of the annular structure 10. At least a part of the fiber 2H is disposed on the inner surface 10B of the annular structure 10. At least a part of the fiber 2H is disposed between the annular structure 10 and the tread rubber layer 11. At least a part of the fiber 2H is disposed between the annular structure 10 and the carcass portion 12.
- a plurality of fibers 2H are arranged in the annular structure 10.
- a plurality of fibers 2H are arranged between the annular structure 10 and the tread rubber layer 11.
- a plurality of fibers 2H are disposed between the annular structure 10 and the carcass portion 12.
- Each of the plurality of fibers 2H is annular.
- the fiber 2H is arranged so as to wind the annular structure 10 such that a part of the fiber 2H is arranged on the outer surface 10A and a part of the fiber 2H is arranged on the inner surface 10B.
- a part of the fiber 2H is arranged in parallel with the rotation axis J (Y axis) on the outer surface 10A.
- a part of the fiber 2H is disposed in parallel with the rotation axis J (Y axis) on the inner surface 10B.
- a plurality of fibers 2H are arranged at intervals on the outer surface 10A.
- a plurality of fibers 2H are arranged at intervals on the inner surface 10B.
- a plurality of fibers 2H are arranged at equal intervals in the direction around the rotation axis J (circumferential direction).
- the plurality of fibers 2H may not be arranged in the annular structure 10.
- one long fiber 2 ⁇ / b> H may be arranged in a spiral shape so as to wind the annular structure 10.
- a part of the spirally wound fiber 2H may be disposed on the outer surface 10A, and a part of the fiber 2H may be disposed on the inner surface 10B.
- the fibers 2H are arranged on the annular structure 10 so that a part of the fibers 2H is arranged on the outer surface 10A and a part of the fibers 2H is arranged on the inner surface 10B.
- an adhesive adheresive layer
- a part of the fiber 2H is disposed so as to face the outer surface 10A of the annular structure 10
- the fibers A part of 2H is disposed so as to face the inner surface 10B of the annular structure 10.
- the fibers 2H are disposed on the outer surface 10A and the inner surface 10B where the adhesive is provided.
- the adhesive is provided on each of the outer surface 10A and the inner surface 10B, the position of the fiber 2H is fixed on each of the outer surface 10A and the inner surface 10B.
- an adhesive layer may be provided on the primer layer.
- the distance (interval) between adjacent fibers 2H arranged on the outer surface 10A is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2H arranged on the outer surface 10A may be set to 10 mm or more and 50 mm or less.
- the distance (interval) between adjacent fibers 2H arranged on the inner surface 10B is set to 5 mm or more and 80 mm or less.
- the distance (interval) between adjacent fibers 2H arranged on the inner surface 10B may be set to 10 mm or more and 50 mm or less.
- At least one fiber 2H is arranged in a 100 mm square region on the outer surface 10A of the annular structure 10. Five or more fibers 2H are not arranged in a 10 mm square region on the outer surface 10A of the annular structure 10. In the present embodiment, at least one fiber 2H is disposed in a 100 mm square region on the inner surface 10B of the annular structure 10. Five or more fibers 2H are not arranged in a 10 mm square region on the inner surface 10B of the annular structure 10.
- the tread rubber layer 11 is disposed so as to face the outer surface 10A of the annular structure 10.
- the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are joined via an adhesive layer.
- the tread rubber layer 11 and the annular structure 10 are joined together in a state where the plurality of fibers 2H are disposed between the inner surface 11B of the tread rubber layer 11 and the outer surface 10A of the annular structure 10.
- the carcass portion 12 is disposed so as to face the inner surface 10B of the annular structure 10.
- the inner surface 10B of the annular structure 10 and the outer surface 12A of the carcass portion 12 are joined via an adhesive layer.
- the annular structure 10 and the carcass portion 12 are joined together in a state where the plurality of fibers 2H are disposed between the inner surface 10B of the annular structure 10 and the outer surface 12A of the carcass portion 12.
- the fibers 2H are disposed between the tread rubber layer 11 and the annular structure 10, and the fibers 2H are disposed between the annular structure 10 and the carcass portion 12, and the tread rubber layer 11 and the carcass portion 12 are added.
- a vulcanization process (step S3) including sulfur is performed.
- the tread rubber layer 11 and the annular structure 10 are bonded by the vulcanization process.
- the carcass part 12 and the annular structure 10 are couple
- the vulcanization process is performed in a state where the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are in contact with each other. Further, the vulcanization process is performed in a state where the inner surface 10B of the annular structure 10 and the outer surface 12A of the carcass portion 12 are in contact with each other.
- the fibers 2H are disposed between the annular structure 10 and the tread rubber layer 11. Therefore, generation of a gas space (air pocket) between the annular structure 10 and the tread rubber layer 11 is suppressed.
- the fibers 2H are disposed between the annular structure 10 and the carcass portion 12. Therefore, generation of a gas space (air pool) between the annular structure 10 and the carcass portion 12 is suppressed.
- the gas between the annular structure 10 and the carcass part 12 is diffused between the annular structure 10 and the carcass part 12 by the fibers 2H arranged between the annular structure 10 and the carcass part 12.
- the fibers 2H suppress the gas between the annular structure 10 and the carcass portion 12 from being uniformly distributed between the annular structure 10 and the carcass portion 12 and staying in one place.
- at least a part of the gas between the annular structure 10 and the carcass portion 12 may be guided by the fiber 2H and move to the outside of the space between the annular structure 10 and the carcass portion 12. .
- At least a part of the gas diffused between the annular structure 10 and the carcass portion 12 may be diffused (absorbed) into one or both of the carcass portion 12 and the fibers 2H. Thereby, the production
- the gas between the annular structure 10 and the carcass portion 12 is diffused by the fibers 2H.
- the annular structure 10 And the carcass portion 12 are diffused.
- the formation of the gas space between the annular structure 10 and the carcass part 12 is suppressed, and the annular structure 10 and the carcass part 12 are coupled.
- the generation of gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by the fibers 2H, and the annular structure 10 and the tread rubber layer 11 are combined.
- the outer surface 12A of the carcass part 12 is deformed into a shape along the shape of the fiber 2H.
- the contact area of 12 A of outer surfaces of the carcass part 12 and gas becomes large.
- the contact area between the inner surface 11B of the tread rubber layer 11 and the gas is increased by the fibers 2H. Therefore, generation of a gas space between the annular structure 10 and the tread rubber layer 11 is suppressed.
- a thread-like member in which a plurality of fibers are aligned and twisted as the fiber 2H, at least a part of the gas between the tread rubber layer 11 and the annular structure 10 is used. , And at least a portion between the annular structure 10 and the carcass portion 12 is diffused (absorbed) inside the fiber 2H.
- the tire including the molding step (step S2) and the vulcanization step (step S3) by the fibers 2H arranged between the annular structure 10 and the tread rubber layer 11.
- generation of a gas space between the annular structure 10 and the tread rubber layer 11 is suppressed.
- the annular structure 10 and the carcass are formed by the fibers 2H arranged between the annular structure 10 and the carcass portion 12. The generation of the gas space with the part 12 is suppressed.
- FIG. 12 is a perspective view schematically showing an example of the annular structure 10 and fibers according to the present embodiment.
- illustration of the tread rubber layer 11 and the carcass portion 12 is omitted.
- both the fiber 2C described with reference to FIG. 6 and the fiber 2H described with reference to FIG. 11 may be arranged in the annular structure 10.
- positioned so that the rotating shaft J may be enclosed may be arrange
- FIG. 13 is a perspective view schematically showing an example of the annular structure 10, the tread rubber layer 11, and the fiber 2I according to the present embodiment.
- the illustration of the carcass portion 12 is omitted.
- the fibers 2I are disposed on the inner surface 11B of the tread rubber layer 11.
- a plurality of the fibers 2I are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2I is arranged in parallel with the rotation axis J (Y axis). Regarding the Y-axis direction, the dimension of the fiber 2I is larger than the dimension of the tread rubber layer 11.
- Each of the plurality of fibers 2I is arranged separately.
- the plurality of fibers 2I are arranged at intervals with respect to the circumferential direction ( ⁇ Y direction) of the inner surface 11B of the tread rubber layer 11.
- the plurality of fibers 2I are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the inner surface 11B.
- the distance (interval) between the adjacent fibers 2I is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2I may be set to 10 mm or more and 50 mm or less.
- the + Y side end of the fiber 2I is arranged on the + Y side of the + Y side edge of the tread rubber layer 11, and the ⁇ Y side end of the fiber 2I is on the tread rubber layer 11.
- the fibers 2I are arranged so as to face the inner surface 11B of the tread rubber layer 11 so as to be arranged on the ⁇ Y side with respect to the ⁇ Y side edge. That is, the + Y side end of the fiber 2I protrudes from the + Y side edge of the tread rubber layer 11, and the ⁇ Y side end of the fiber 2I protrudes from the ⁇ Y side edge of the tread rubber layer 11.
- the fibers 2I are disposed on the inner surface 11B of the tread rubber layer 11.
- an adhesive (adhesive layer) is provided on the inner surface 11B of the tread rubber layer 11.
- the fibers 2I are arranged on the inner surface 11B of the tread rubber layer 11 provided with the adhesive. Thereby, the position of the fiber 2I is fixed on the inner surface 11B.
- the annular structure 10 is arranged so as to face the inner surface 11B of the tread rubber layer 11.
- the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are bonded. It joins through an agent layer.
- the adhesive is not provided on the inner surface 11B of the tread rubber layer 11, but the adhesive is provided on the outer surface 10A of the annular structure 10, and the tread rubber layer 11 and the annular structure 10 in which the fibers 2I are disposed on the inner surface 11B. You may join.
- step S3 is performed in a state where the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are in contact with each other.
- the fibers 2I are arranged between the annular structure 10 and the tread rubber layer 11, in the manufacturing process of the tire 1 including the molding process (step S2) and the vulcanization process (step S3), the annular structure 10 and the tread. Generation of a gas space with the rubber layer 11 is suppressed.
- the gas between the annular structure 10 and the tread rubber layer 11 is caused between the annular structure 10 and the tread rubber layer 11 by the fibers 2I arranged between the annular structure 10 and the tread rubber layer 11.
- the + Y side end and the ⁇ Y side end of the fiber 2I are disposed outside the edge of the tread rubber layer 11. That is, the end on the + Y side and the end on the ⁇ Y side of the fiber 2I are arranged outside the space between the annular structure 10 and the tread rubber layer 11.
- the fiber 2I guides at least a part of the gas between the annular structure 10 and the tread rubber layer 11 to escape outside the space between the annular structure 10 and the tread rubber layer 11. . Thereby, generation
- the tire 1 is manufactured by performing the vulcanization process in a state where the fibers 2I are arranged between the annular structure 10 and the tread rubber layer 11.
- at least one of the + Y side end and the ⁇ Y side end of the fiber 2I may protrude (expose) from the outer surface of the tire 1.
- the annular structure 10 and the fiber 2I may be embedded in the rubber of the tire 1 without protruding (exposed) from the outer surface of the tire 1.
- the fiber 2I is disposed between the annular structure 10 and the tread rubber layer 11, so that the gas space between the annular structure 10 and the tread rubber layer 11 is reduced. Generation is suppressed. Therefore, the occurrence of poor adhesion between the annular structure 10 and the tread rubber layer 11 is suppressed, and the deterioration of the performance of the tire 1 is suppressed.
- the fiber 2I does not have to protrude outside the edge of the tread rubber layer 11.
- FIG. 14 is a perspective view schematically showing an example of the tread rubber layer 11 and the fiber 2J according to the present embodiment.
- the fibers 2J are arranged on the inner surface 11B of the tread rubber layer 11.
- the fiber 2J is disposed between the annular structure 10 and the tread rubber layer 11.
- the fiber 2J has a bent portion.
- a plurality of bent portions are provided in the fiber 2J in the circumferential direction of the inner surface 11B.
- the bent portion includes a first bent portion that bends so that at least a part of the fiber 2J protrudes to one side (+ Y side) of the tread rubber layer 11 in the width direction (the width direction of the tire 1), and at least one of the fibers 2J.
- the bent portion of the fiber 2J is disposed outside the edge of the tread rubber layer 11.
- the fibers 2J may not protrude outside the edge of the tread rubber layer 11.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by arranging the fibers 2J between the annular structure 10 and the tread rubber layer 11.
- FIG. 15 is a perspective view schematically showing an example of the tread rubber layer 11 and the fiber 2K according to the present embodiment.
- the fibers 2K are arranged on the inner surface 11B of the tread rubber layer 11.
- a plurality of the fibers 2K are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2K is arranged so as to surround the rotation axis J.
- Each of the plurality of fibers 2K is arranged separately. That is, the plurality of fibers 2K are arranged at intervals.
- the plurality of fibers 2K are arranged on the inner surface 11B of the tread rubber layer 11 with an interval in the width direction of the tread rubber layer 11 (the width direction of the tire 1). In the present embodiment, the plurality of fibers 2K are arranged at equal intervals in the width direction of the tread rubber layer 11 (the width direction of the tire 1).
- the distance (interval) between adjacent fibers 2K is set to 5 mm or more and 80 mm or less.
- the distance (interval) between the adjacent fibers 2K may be set to 10 mm or more and 50 mm or less.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by disposing the fibers 2K between the annular structure 10 and the tread rubber layer 11.
- FIG. 16 is a perspective view schematically showing an example of the tread rubber layer 11 and the fiber 2L according to the present embodiment.
- illustration of the annular structure 10 and the carcass portion 12 is omitted.
- the fibers 2L are disposed on the inner surface 11B of the tread rubber layer 11.
- a plurality of the fibers 2L are arranged between the annular structure 10 and the tread rubber layer 11. Some of the plurality of fibers 2L are arranged so as to surround the rotation axis J. Some of the plurality of fibers 2L are arranged in parallel with the rotation axis J.
- the fibers 2L are knitted in a mesh shape.
- the fibers 2L may be knitted in a mesh before being arranged on the inner surface 11B.
- the fiber 2 ⁇ / b> L formed in a mesh shape is disposed on the inner surface 11 ⁇ / b> B of the tread rubber layer 11.
- the formation of the gas space between the annular structure 10 and the tread rubber layer 11 is suppressed by arranging the fibers 2L between the annular structure 10 and the tread rubber layer 11.
- FIG. 17 is a perspective view schematically showing an example of the tread rubber layer 11 and the fiber 2M according to the present embodiment.
- the length of the fiber 2M is short.
- the fiber 2M is a so-called short fiber.
- the fiber 2M is shorter than the dimension of the annular structure 10 in the direction parallel to the rotation axis J and the dimension of the annular structure 10 in the direction around the rotation axis J.
- the fiber 2M is disposed on the inner surface 11B of the tread rubber layer 11.
- a plurality of the fibers 2M are arranged between the annular structure 10 and the tread rubber layer 11.
- Each of the plurality of fibers 2M is arranged apart. That is, the plurality of fibers 2M are arranged at intervals.
- a plurality of fibers 2M are arranged with substantially the same density in each of the direction parallel to the rotation axis J and the direction around the rotation axis J. In other words, the plurality of fibers 2M are uniformly arranged on the inner surface 11B.
- the fibers 2M may be mixed in advance with the adhesive.
- An adhesive layer containing the fibers 2M may be formed on the inner surface 11B by providing the inner surface 11B with an adhesive in which the fibers 2M are mixed (dispersed).
- the fiber 2M may be mixed in advance with a solution (primer solution) for forming the primer layer.
- the fiber 2M may be premixed in both the adhesive and the primer solution.
- the annular structure 10 is disposed so as to face the inner surface 11B of the tread rubber layer 11.
- the outer surface 10A of the annular structure 10 and the inner surface 11B of the tread rubber layer 11 are joined via an adhesive layer.
- the tread rubber layer 11 and the annular structure 10 are joined together in a state where the plurality of fibers 2M are arranged between the inner surface 11B of the tread rubber layer 11 and the outer surface 10A of the annular structure 10.
- gas is diffused between the annular structure 10 and the tread rubber layer 11 by the fibers 2M disposed between the annular structure 10 and the tread rubber layer 11, and therefore the annular structure 10 And the generation of gas space between the tread rubber layer 11 is suppressed.
- FIG. 18 is a perspective view showing an example of the annular structure 101 according to this embodiment.
- the annular structure 101 has an uneven portion 3.
- the uneven portions 3 are provided on both sides of the annular structure 101 in the width direction.
- the convex part of the uneven part 3 is pointed.
- the uneven portion 3 has a so-called saw blade shape.
- FIG. 19 is a perspective view showing an example of the annular structure 102 according to the present embodiment.
- the annular structure 102 includes an outer surface 102A, an inner surface 102B, and a plurality of through holes 4 penetrating the outer surface 102A and the inner surface 102B.
- a plurality of through holes 4 are arranged at equal intervals in the width direction of the annular structure 102. Further, with respect to the circumferential direction of the annular structure 102, a plurality of through holes 4 are arranged at equal intervals. With respect to each of the width direction and the circumferential direction of the annular structure 102, a plurality of through holes 4 are formed with equal density.
- At least a part of the tread rubber layer 11 joined to the outer surface 102A of the annular structure 102 and the carcass portion 12 joined to the inner surface 102B of the annular structure 102 are connected via the through hole 4. Touchable.
- an adhesive adheresive layer
- at least a part of the inner surface 11B of the tread rubber layer 11 and the outer surface of the carcass portion 12 12A is bonded by an adhesive (adhesive layer) through the through-hole 4.
- bonding of the cyclic structure 102 and the carcass part 12 are strengthened.
- the through holes 4 promote gas diffusion between the tread rubber layer 11 and the annular structure 102 and gas diffusion between the annular structure 102 and the carcass portion 12. Accordingly, the generation of a gas space between the tread rubber layer 11 and the annular structure 102 and between the annular structure 102 and the carcass portion 12 is suppressed.
- FIG. 20 is a perspective view showing an example of the annular structure 103 according to the present embodiment.
- the annular structure 103 has an uneven portion 3 and a plurality of through holes 4. In this way, the components described with reference to FIG. 18 and the components described with reference to FIG. 19 may be combined.
- FIG. 21 is a perspective view showing an example of the annular structure 104 according to the present embodiment.
- the annular structure 104 has a plurality of through holes 4. Further, the annular structure 104 has a recess 5.
- the recess 5 may be referred to as a notch 5.
- the recesses 5 are provided on both sides of the annular structure 104 in the width direction. A plurality of the recesses 5 are arranged at intervals in the circumferential direction of the annular structure 104.
- the tread rubber layer 11 When at least a part of the tread rubber layer 11 is disposed on both sides of the annular structure 104 in the width direction, at least a part of the tread rubber layer 11 can bite into the recess 5. Thereby, the coupling
- FIG. 22 is a perspective view showing an example of the annular structure 105 according to the present embodiment.
- the annular structure 105 has a plurality of through holes 4. With respect to the circumferential direction of the annular structure 105, a plurality of through holes 4 are arranged at equal intervals. With respect to the width direction of the annular structure 105, the through holes 4 are arranged at intervals. A plurality of through holes 4 are arranged at unequal intervals in the width direction of the annular structure 105.
- the interval between the through holes 4 arranged in the vicinity of the edge of the annular structure 105 is larger than the interval between the through holes 4 arranged in the center of the annular structure 105. small.
- the interval between the through holes 4 arranged in the vicinity of the edge of the annular structure 105 is larger than the interval between the through holes 4 arranged in the center of the annular structure 105. Good.
- the through hole 4 reinforces the coupling between the tread rubber layer 11 and the annular structure 105 and the coupling between the annular structure 105 and the carcass portion 12. Further, the through holes 4 promote gas diffusion between the tread rubber layer 11 and the annular structure 105 and gas diffusion between the annular structure 105 and the carcass portion 12. Accordingly, the generation of a gas space between the tread rubber layer 11 and the annular structure 105 and between the annular structure 105 and the carcass portion 12 is suppressed.
- FIG. 23 is a diagram illustrating an example of the fiber 2N according to the present embodiment.
- the fibers 2N are arranged in an annular structure (such as 102) having the through holes 4 will be described.
- the fiber 2N is inserted into the through hole 4 from the outer surface side of the annular structure, and then inserted into the through hole 4 adjacent to the through hole 4 from the inner surface side of the annular structure.
- the fiber 2N is inserted into the through hole 4 from the inner surface side of the annular structure, and then inserted into the through hole 4 adjacent to the through hole 4 from the outer surface side of the annular structure. That is, the fiber is so arranged that at least a part of the fiber 2N is disposed on the outer surface side of the annular structure and a state in which at least a part of the fiber 2N is disposed on the inner surface side of the annular structure are alternately repeated. 2N is sequentially inserted into the plurality of through holes 4.
- the through-hole 4 is provided in the annular structure, and the fibers 2N are disposed between the outer surface of the annular structure and the tread rubber layer 11, and the inner surface of the annular structure and the carcass portion 12 are arranged. Since the fibers 2N are arranged between them, generation of a gas space between the tread rubber layer 11 and the annular structure and generation of a gas space between the annular structure and the carcass portion 12 are suppressed.
- FIG. 24 is a diagram illustrating an example of the fiber 2P according to the present embodiment.
- the fibers 2P are arranged in an annular structure (such as 102) having the through holes 4 will be described.
- the fibers 2P are arranged at intervals on the outer surface of the annular structure.
- the fibers 2P are arranged so as to pass through the openings of at least some of the through holes 4 of the plurality of through holes 4.
- the fibers 2P may be arranged at intervals on the inner surface of the annular structure.
- FIG. 25 is a schematic diagram for explaining an example of the tire 1 according to the present embodiment.
- the tire 1 includes a cylindrical annular structure 10 having an outer surface 10A and an inner surface 10B, and a carcass portion 12 disposed so that at least a part thereof faces the inner surface 10B of the annular structure 10.
- the tread rubber layer 11 disposed so that at least a part thereof faces the outer surface 10A of the annular structure 10 is disposed between the annular structure 10 and the carcass part 12, and the annular structure 10 and the carcass part 12
- a plurality of fibers 2 are arranged between the annular structure 10 and the carcass portion 12.
- no fiber is disposed between the tread rubber layer 11 and the annular structure 10.
- the fibers 2 may be disposed between the annular structure 10 and the carcass portion 12 without being disposed between the tread rubber layer 11 and the annular structure 10. According to this embodiment, the production
- the fiber 2 may be arranged so as to surround the rotation axis J.
- the fiber 2 may be arranged in parallel with the rotation axis J.
- the fiber 2 may be shorter than the dimension of the annular structure 10 in the direction parallel to the rotation axis J and the dimension of the annular structure 10 in the direction around the rotation axis J.
- a plurality of the fibers 2 may be arranged at an equal density in each of a direction parallel to the rotation axis J and a direction around the rotation axis J.
- At least one fiber 2 is arranged in a 100 mm square region on the inner surface 10B of the annular structure 10, and five or more fibers 2 may not be arranged in a 10 mm square region on the inner surface 10B of the annular structure 10. .
- the fiber 2 is disposed between the annular structure (such as 102) having the through hole 4 and the carcass portion 12, and between the annular structure (such as 102) having the through hole 4 and the tread rubber layer 11.
- the fibers may not be arranged.
- step S2 the step of arranging at least a part of the tread rubber layer 11 so as to face the outer surface 10A of the annular structure 10 and the at least part of the carcass portion 12 And the step of disposing at least a part of the carcass portion 12 and the inner surface 10B of the annular structure 10 so as to face each other.
- step S3 the carcass portion 12 is vulcanized in a state where the fibers 2 are arranged between the annular structure 10 and the carcass portion 12, and the space between the annular structure 10 and the carcass portion 12 is obtained.
- the process of combining the carcass portion 12 and the annular structure 10 is performed while suppressing the generation of the gas space at.
- step S2 In the molding process (step S2) of the tire 1 shown in FIG. 25, after the annular structure 10 and the tread rubber layer 11 are joined, the fiber 2 is disposed between the annular structure 10 and the carcass portion 12.
- the annular structure 10 and the carcass portion 12 may be joined.
- the annular structure 10 and the tread rubber layer 11 are joined. May be.
- joining of the annular structure 10 and the carcass part 12 and joining of the annular structure 10 and the tread rubber layer 11 may be performed simultaneously.
- the fiber 2 and the inner surface 10B of the annular structure 10 are opposed to each other. Then, the carcass portion 12 and the inner surface 10B of the annular structure 10 may be made to face each other. After the carcass portion 12 and the inner surface 10B of the annular structure 10 are made to face each other, the fibers 2 and the annular structure 10
- the inner surface 10B may be opposed, or the carcass portion 12 and the inner surface 10B of the annular structure 10 may be opposed simultaneously with the fiber 2 and the inner surface 10B of the annular structure 10 facing each other.
- the carcass portion 12 may not face the inner surface 10B of the annular structure 10.
- the carcass portion 12 may not be disposed at a position facing the inner surface 10B of the annular structure 10 but may be disposed only on the outer side of the annular structure 10 in the Y-axis direction (the width direction of the tire 1).
- the present inventor creates a tire 1 having fibers 2 according to the above-described embodiment, performs a peel test between the annular structure 10 and the tread rubber layer 11 in the tire 1 according to the present embodiment, and relates to the present embodiment.
- the adhesive strength between the annular structure 10 and the tread rubber layer 11 was measured.
- the tire which concerns on a comparative example is created, the peeling test of the annular structure 10 and the tread rubber layer 11 in the tire which concerns on a comparative example is performed, and adhesion
- the size of the tire 1 according to this embodiment and the tire according to the comparative example was 195 / 65R15.
- numerical values obtained by indexing the adhesive strength (adhesive strength) according to JIS K6256 were derived.
- FIG. 26 shows the measurement results for the tire 1 according to Example 1 of the present invention, the measurement results for the tire according to Comparative Example 1, the measurement results for the tire according to Comparative Example 2, and the tires according to Comparative Example 3. The measurement results are shown.
- the tire 1 according to the first embodiment includes a plurality of fibers 2 disposed between the annular structure 10 and the tread rubber layer 11. As described with reference to FIG. 3 and the like, each of the plurality of fibers 2 is arranged in parallel with the rotation axis J. The plurality of fibers 2 are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the outer surface 10A of the annular structure 10. The interval between the fibers 2 is 15 mm.
- the tire according to Comparative Example 1 has the annular structure 10 and the tread rubber layer 11 and does not have fibers. That is, in the tire according to Comparative Example 1, no fiber exists between the annular structure 10 and the tread rubber layer 11.
- the tire according to Comparative Example 2 has a plurality of fibers 2 arranged between the annular structure 10 and the tread rubber layer 11. Each of the plurality of fibers 2 is arranged in parallel with the rotation axis J. The plurality of fibers 2 are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the outer surface 10A of the annular structure 10. The distance between the fibers 2 is 2 mm.
- the tire according to Comparative Example 3 has a plurality of fibers 2 arranged between the annular structure 10 and the tread rubber layer 11. Each of the plurality of fibers 2 is arranged in parallel with the rotation axis J. The plurality of fibers 2 are arranged at equal intervals in the circumferential direction ( ⁇ Y direction) of the outer surface 10A of the annular structure 10. The interval between the fibers 2 is 110 mm.
- the adhesive strength (adhesive force) between the annular structure 10 and the tread rubber layer 11 according to Example 1 is 117.
- the adhesive strength (adhesive force) between the annular structure 10 according to the comparative example 1 and the tread rubber layer 11 is 100.
- the adhesive strength (adhesive force) between the annular structure 10 according to the comparative example 2 and the tread rubber layer 11 is 87.
- the adhesive strength (adhesive force) between the annular structure 10 according to the comparative example 3 and the tread rubber layer 11 is 96.
- the adhesive strength according to Example 1 was higher than the adhesive strengths according to Comparative Example 1, Comparative Example 2, and Comparative Example 3. That is, it was confirmed that the bonding strength between the annular structure 10 and the tread rubber layer 11 can be improved by the fiber 2 according to the present invention. From the results of Comparative Example 2, it was confirmed that even when the fibers 2 were provided, sufficient adhesive strength could not be obtained if the distance between the fibers 2 was too small. From the results of Comparative Example 3, it was confirmed that even when the fibers 2 were provided, sufficient adhesive strength could not be obtained if the distance between the fibers 2 was too large.
Abstract
Description
第1実施形態について説明する。図1は、本実施形態に係るタイヤ1の一例を示す図である。図1は、タイヤ1の回転軸Jを通る子午断面を示す。回転軸Jは、Y軸と平行である。タイヤ1は、環状である。回転軸Jは、タイヤ1の中心軸である。タイヤ1の使用時において、タイヤ1の内部に気体が充填される。本実施形態において、タイヤ1に充填される気体は、空気である。すなわち、タイヤ1は、空気入りタイヤである。
第2実施形態について説明する。以下の説明において、上述の実施形態と同一又は同等の構成部分については同一の符号を付し、その説明を簡略又は省略する。
第3実施形態について説明する。図6は、本実施形態に係る環状構造体10及び繊維2Cの一例を模式的に示す斜視図である。図6において、トレッドゴム層11及びカーカス部12の図示を省略する。
第4実施形態について説明する。図7は、本実施形態に係る環状構造体10及び繊維2Dの一例を模式的に示す斜視図である。図7において、トレッドゴム層11及びカーカス部12の図示を省略する。
第5実施形態について説明する。図8は、本実施形態に係る環状構造体10及び繊維2Eの一例を模式的に示す斜視図である。図8において、トレッドゴム層11及びカーカス部12の図示を省略する。
第6実施形態について説明する。図9は、本実施形態に係る環状構造体10及び繊維2Fの一例を模式的に示す斜視図である。図9において、トレッドゴム層11及びカーカス部12の図示を省略する。
第7実施形態について説明する。図10は、本実施形態に係る環状構造体10及び繊維2Gの一例を模式的に示す斜視図である。図10において、トレッドゴム層11及びカーカス部12の図示を省略する。
第8実施形態について説明する。以下の説明において、上述の実施形態と同一又は同等の構成部分については同一の符号を付し、その説明を簡略又は省略する。
第9実施形態について説明する。図12は、本実施形態に係る環状構造体10及び繊維の一例を模式的に示す斜視図である。図12において、トレッドゴム層11及びカーカス部12の図示を省略する。
第10実施形態について説明する。以下の実施形態においては、トレッドゴム層11に繊維2が配置された後、その繊維2が配置されたトレッドゴム層11と環状構造体10とが接合される例について説明する。以下の説明において、上述の実施形態と同一又は同等の構成部分については同一の符号を付し、その説明を簡略又は省略する。
第11実施形態について説明する。図14は、本実施形態に係るトレッドゴム層11及び繊維2Jの一例を模式的に示す斜視図である。
第12実施形態について説明する。図15は、本実施形態に係るトレッドゴム層11及び繊維2Kの一例を模式的に示す斜視図である。
第13実施形態について説明する。図16は、本実施形態に係るトレッドゴム層11及び繊維2Lの一例を模式的に示す斜視図である。図16において、環状構造体10及びカーカス部12の図示を省略する。
第14実施形態について説明する。図17は、本実施形態に係るトレッドゴム層11及び繊維2Mの一例を模式的に示す斜視図である。
第15実施形態について説明する。以下の実施形態においては、環状構造体の例について説明する。図18は、本実施形態に係る環状構造体101の一例を示す斜視図である。図18において、環状構造体101は、凹凸部3を有する。凹凸部3は、環状構造体101の幅方向の両側のそれぞれに設けられる。凹凸部3の凸部は、尖っている。凹凸部3は、所謂、鋸刃状である。環状構造体101の幅方向の両側にトレッドゴム層11の少なくとも一部が配置される場合、凹凸部3は、トレッドゴム層11に食い込むことができる。これにより、環状構造体101とトレッドゴム層11との結合が強化される。
第16実施形態について説明する。図19は、本実施形態に係る環状構造体102の一例を示す斜視図である。図19において、環状構造体102は、外面102Aと、内面102Bと、外面102Aと内面102Bとを貫通する複数の貫通孔4とを有する。
第17実施形態について説明する。図20は、本実施形態に係る環状構造体103の一例を示す斜視図である。図20において、環状構造体103は、凹凸部3と、複数の貫通孔4とを有する。このように、図18を参照して説明した構成要素と、図19を参照して説明した構成要素とを組み合わせてもよい。
第18実施形態について説明する。図21は、本実施形態に係る環状構造体104の一例を示す斜視図である。図21において、環状構造体104は、複数の貫通孔4を有する。また、環状構造体104は、凹部5を有する。凹部5を、切欠部5、と称してもよい。凹部5は、環状構造体104の幅方向の両側のそれぞれに設けられる。凹部5は、環状構造体104の周方向に関して、間隔をあけて複数配置される。環状構造体104の幅方向の両側にトレッドゴム層11の少なくとも一部が配置される場合、トレッドゴム層11の少なくとも一部が、凹部5に食い込むことができる。これにより、環状構造体104とトレッドゴム層11との結合が強化される。
第19実施形態について説明する。図22は、本実施形態に係る環状構造体105の一例を示す斜視図である。図22において、環状構造体105は、複数の貫通孔4を有する。環状構造体105の周方向に関して、貫通孔4は、等間隔で複数配置される。環状構造体105の幅方向に関して、貫通孔4は、間隔をあけて配置される。環状構造体105の幅方向に関して、貫通孔4は、不等間隔で複数配置される。本実施形態において、環状構造体105の幅方向に関して、環状構造体105のエッジの近傍に配置される貫通孔4の間隔は、環状構造体105の中央に配置される貫通孔4の間隔よりも小さい。なお、環状構造体105の幅方向に関して、環状構造体105のエッジの近傍に配置される貫通孔4の間隔が、環状構造体105の中央に配置される貫通孔4の間隔よりも大きくてもよい。
第20実施形態について説明する。図23は、本実施形態に係る繊維2Nの一例を示す図である。本実施形態においては、貫通孔4を有する環状構造体(102など)に繊維2Nが配置される例について説明する。
第21実施形態について説明する。図24は、本実施形態に係る繊維2Pの一例を示す図である。本実施形態においては、貫通孔4を有する環状構造体(102など)に繊維2Pが配置される例について説明する。
第22実施形態について説明する。図25は、本実施形態に係るタイヤ1の一例を説明するための模式図である。図25に示すように、タイヤ1は、外面10A及び内面10Bを有する円筒形状の環状構造体10と、少なくとも一部が環状構造体10の内面10Bと対向するように配置されるカーカス部12と、少なくとも一部が環状構造体10の外面10Aと対向するように配置されるトレッドゴム層11と、環状構造体10とカーカス部12との間に配置され、環状構造体10とカーカス部12との間において気体空間の生成を抑制するための繊維2と、を備えている。繊維2は、環状構造体10とカーカス部12との間に複数配置される。図25に示す例においては、トレッドゴム層11と環状構造体10との間に繊維は配置されない。図25に示すように、トレッドゴム層11と環状構造体10との間に繊維が配置されず、環状構造体10とカーカス部12との間に繊維2が配置されてもよい。本実施形態によれば、少なくとも、環状構造体10とカーカス部12との間における気体空間の生成が抑制される。
次に、本発明に係る実施例について説明する。本発明者は、上述の実施形態に従って繊維2を有するタイヤ1を作成し、本実施形態に係るタイヤ1における環状構造体10とトレッドゴム層11との剥離試験を行って、本実施形態に係る環状構造体10とトレッドゴム層11との接着強度を測定した。また、比較例に係るタイヤを作成し、比較例に係るタイヤにおける環状構造体10とトレッドゴム層11との剥離試験を行って、比較例に係る環状構造体10とトレッドゴム層11との接着強度を測定した。
2 繊維
4 貫通孔
10 環状構造体
10A 外面
10B 内面
11 トレッドゴム層
11A 外面(トレッド面)
11B 内面
11M 溝部
12 カーカス部
Claims (13)
- 回転軸の周囲に配置され、外面及び内面を有する円筒形状の環状構造体と、
少なくとも一部が前記回転軸と平行な方向に関して前記環状構造体の外側に配置され、ゴムで覆われたコードを有するカーカス部と、
少なくとも一部が前記環状構造体の外面と対向するように配置され、トレッド部を含むゴム層と、
前記環状構造体と前記ゴム層との間に配置され、前記環状構造体と前記ゴム層との間において気体空間の生成を抑制するための繊維と、を備える空気入りタイヤ。 - 前記繊維は、前記環状構造体と前記ゴム層との間に複数配置される請求項1に記載の空気入りタイヤ。
- 前記カーカス部の少なくとも一部は、前記環状構造体の内面と対向するように配置され、
前記繊維は、前記環状構造体と前記カーカス部との間において気体空間の生成が抑制されるように、前記環状構造体と前記カーカス部との間に配置される請求項1又は請求項2に記載の空気入りタイヤ。 - 回転軸の周囲に配置され、外面及び内面を有する円筒形状の環状構造体と、
少なくとも一部が前記環状構造体の内面と対向するように配置され、ゴムで覆われたコードを有するカーカス部と、
少なくとも一部が前記環状構造体の外面と対向するように配置され、トレッド部を含むゴム層と、
前記環状構造体と前記カーカス部との間に配置され、前記環状構造体と前記カーカス部との間において気体空間の生成を抑制するための繊維と、を備える空気入りタイヤ。 - 前記繊維は、前記環状構造体と前記カーカス部との間に複数配置される請求項3又は請求項4に記載の空気入りタイヤ。
- 前記繊維は、前記環状構造体の表面における100mm四方の領域に少なくとも1本配置され、前記環状構造体の表面における10mm四方の領域に5本以上配置されない請求項1から請求項5のいずれか一項に記載の空気入りタイヤ。
- 前記繊維の線密度は、1×10-6g/mm以上1×10-4g/mm以下であり、
前記繊維の直径は、0.03mm以上1.00mm以下である請求項1から請求項6のいずれか一項に記載の空気入りタイヤ。 - 前記環状構造体は、前記外面と前記内面とを貫通する複数の貫通孔を有する請求項1から請求項7のいずれか一項に記載の空気入りタイヤ。
- 前記繊維は、前記回転軸を囲むように配置される請求項1から請求項8のいずれか一項に記載の空気入りタイヤ。
- 前記繊維は、前記回転軸と平行に配置される請求項1から請求項8のいずれか一項に記載の空気入りタイヤ。
- 前記繊維は、前記回転軸と平行な方向に関する前記環状構造体の寸法、及び前記回転軸周りの方向に関する前記環状構造体の寸法よりも短く、前記回転軸と平行な方向及び前記回転軸周りの方向のそれぞれに関して等しい密度で複数配置される請求項1から請求項8のいずれか一項に記載の空気入りタイヤ。
- 回転軸の周囲に配置され、外面及び内面を有する円筒形状の環状構造体を作成する手順と、
ゴムで覆われたコードを有するカーカス部の少なくとも一部を、前記回転軸と平行な方向に関して前記環状構造体の外側に配置する手順と、
トレッド部を含むゴム層の少なくとも一部と前記環状構造体の外面との間に繊維を配置して、前記ゴム層の少なくとも一部と前記環状構造体の外面とを対向させる手順と、
前記環状構造体と前記ゴム層との間に前記繊維が配置された状態で前記ゴム層を加硫して、前記環状構造体と前記ゴム層との間における気体空間の生成を抑制しつつ、前記ゴム層と前記環状構造体とを結合させる手順と、を含む空気入りタイヤの製造方法。 - 回転軸の周囲に配置され、外面及び内面を有する円筒形状の環状構造体を作成する手順と、
トレッド部を含むゴム層の少なくとも一部を、前記環状構造体の外面と対向するように配置する手順と、
ゴムで覆われたコードを有するカーカス部の少なくとも一部と前記環状構造体の内面との間に繊維を配置して、前記カーカス部の少なくとも一部と前記環状構造体の内面とを対向させる手順と、
前記環状構造体と前記カーカス部との間に前記繊維が配置された状態で前記カーカス部を加硫して、前記環状構造体と前記カーカス部との間における気体空間の生成を抑制しつつ、前記カーカス部と前記環状構造体とを結合させる手順と、を含む空気入りタイヤの製造方法。
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