tire

Abstract

To provide a tire that has a tire skeleton member made of resin and an RFID tag, which is configured so that positional deviation of the RFID tag can be suppressed while being improved in quietness.SOLUTION: The tire comprises: an annular tire skeleton member made of resin comprising a bead part, a side part leading to outside in a tire radial direction of the bead part and a crown part leading to inside in a tire width direction of the side part; a thick part, formed in the side part, which expands in the tire width direction more than the other portion of the side part so that a thickness in the tire width direction becomes thicker than the other portion; and an RFID tag provided on the thick part so that the tag is integrated with the thick part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a tire.

Background Art

[0002] Patent Document 1 discloses a tire having an annular resin tire skeleton member and an RFID tag. The tire skeleton member includes a bead portion, a side portion continuous with the outside in the tire radial direction of the bead portion, and a crown portion continuous with the inside in the tire width direction of the side portion. The RFID tag is attached to the outer surface of the side portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the tire of Patent Document 1, when the resin tire skeleton member is molded by injection molding and the RFID tag is set in the mold and integrated into the side portion, the position of the RFID tag may shift due to the resin flow generated from the gate. In addition, as for the tire, an improvement in quietness is required to suppress the noise generated when the tire in motion contacts the road surface.

[0005] An object of the present disclosure is to suppress the positional deviation of an RFID tag while improving the quietness in a tire having a resin tire skeleton member and an RFID tag.

Means for Solving the Problems

[0006] The tire according to the first aspect of the present disclosure includes an annular and resinous tire skeleton member having a bead portion, a side portion continuous with the radially outer side of the bead portion in the tire diameter direction, and a crown portion continuous with the inner side of the side portion in the tire width direction, a thick portion formed in the side portion and having a greater thickness in the tire width direction than other portions of the side portion by protruding in the tire width direction beyond the other portions, and an RFID tag provided on the thick portion so as to be integrated with the thick portion.

[0007] According to the tire of the first aspect of the present disclosure, the thick portion formed in the side portion has a greater thickness in the tire width direction than other portions of the side portion by protruding in the tire width direction beyond the other portions. Thereby, vibration in the side portion can be suppressed as compared with a configuration in which the thickness in the tire width direction of the thick portion and the other portions is the same. As a result, the quietness of the tire can be improved.

[0008] Furthermore, in the tire of the first aspect of the present disclosure, the RFID tag is provided on the thick portion so as to be integrated with the thick portion.

[0009] Here, since the thick portion protrudes in the tire width direction beyond the other portions, a recess for forming the thick portion is provided in the mold when the tire skeleton member is molded by injection molding. And since the RFID tag is provided on the thick portion, it becomes possible to arrange the RFID tag in the recess of the mold. Thus, by arranging the RFID tag in the recess of the mold, the RFID tag is less affected by the resin flow when the tire skeleton member is molded by injection molding. Therefore, displacement of the RFID tag can be suppressed.

[0010] As described above, according to the tire of the first aspect of the present disclosure, in a tire having a resinous tire skeleton member and an RFID tag, it is possible to suppress displacement of the RFID tag while improving quietness.

[0011] The tire according to the second aspect of the present disclosure is, in the first aspect, the RFID tag protrudes in the tire width direction beyond the other portions and forms a part of the thick portion.

[0012] According to the tire of the second aspect of the present disclosure, since the RFID tag protrudes in the tire width direction more than other parts of the side portion, a recess for arranging the RFID tag is provided in the mold when molding the tire skeleton member by injection molding. And by arranging the RFID tag in the recess of the mold, it is less likely to be affected by the resin flow when molding the tire skeleton member by injection molding. Therefore, displacement of the RFID tag can be suppressed.

[0013] In the tire of the third aspect of the present disclosure, in the first aspect or the second aspect, the RFID tag forms a part of the tire circumferential direction of the thick portion, and the thick portion including the RFID tag is formed along the tire circumferential direction on the entire circumference of the side portion.

[0014] According to the tire of the third aspect of the present disclosure, since the thick portion including the RFID tag is formed along the tire circumferential direction on the entire circumference of the side portion, the quietness of the tire can be improved as compared with the configuration in which the thick portion including the RFID tag is formed on a part of the tire circumferential direction of the side portion.

[0015] In the tire of the fourth aspect of the present disclosure, in any one of the first aspect to the third aspect, the longitudinal direction of the RFID tag is arranged along the tire circumferential direction.

[0016] According to the tire of the fourth aspect of the present disclosure, since the longitudinal direction of the RFID tag is arranged along the tire circumferential direction, it is less likely to be affected by the deformation when the tire is grounded as compared with the configuration in which the longitudinal direction of the RFID tag is arranged along the tire radial direction. Therefore, breakage of the RFID tag can be suppressed.

[0017] In the tire of the fifth aspect of the present disclosure, in any one of the first aspect to the fourth aspect, the RFID tag has a resin case, an RFID chip and an antenna accommodated in the case, and the side portion is molded so as to be integrated with the case.

[0018] In the tire according to the fifth aspect of the present disclosure, since the side portion of the tire skeleton member is formed so as to be integrated with a case that houses an RFID chip and an antenna, the RFID tag can be easily incorporated into the tire skeleton member.

[0019] In the tire according to the sixth aspect of the present disclosure, in the fifth aspect, the case is formed of a resin material of the same type as the resin material forming the tire skeleton member.

[0020] In the tire according to the sixth aspect of the present disclosure, since the resin material forming the case of the RFID tag is of the same type as the resin material forming the tire skeleton member, the case can be more firmly integrated with the side portion than in a tire in which the resin materials are different types.

Advantages of the Invention

[0021] According to the present disclosure, in a tire having a resin tire skeleton member and an RFID tag, it is possible to suppress displacement of the RFID tag while improving quietness.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0023] Hereinafter, embodiments for implementing the present disclosure will be described with reference to the drawings. Components denoted by the same reference numerals in each drawing mean the same or similar components. Note that redundant descriptions and reference numerals in the embodiments described below may be omitted. In addition, the drawings used in the following description are all schematic, and the dimensional relationships between the respective elements shown in the drawings, the ratios of the respective elements, etc. do not necessarily match the actual ones. Also, the dimensional relationships between the respective elements and the ratios of the respective elements do not necessarily match even between multiple drawings.

[0024] Also, in the drawings, arrow TC indicates the tire circumferential direction, arrow TW indicates the tire width direction, and arrow TR indicates the tire radial direction. Further, hereinafter, the side closer to the tire rotation axis along the tire radial direction will be referred to as the "inner side in the tire radial direction", and the side farther from the tire rotation axis along the tire radial direction will be referred to as the "outer side in the tire radial direction". On the other hand, the side closer to the tire equatorial plane CL along the tire width direction will be referred to as the "inner side in the tire width direction", and the side farther from the tire equatorial plane CL along the tire width direction will be referred to as the "outer side in the tire width direction". Note that the method for measuring the dimensions of each part conforms to the method described in the 2021 edition YEAR BOOK issued by JATMA (Japan Automobile Tire Manufacturers Association).

[0025] As shown in FIG. 1, the tire 10 of the present embodiment is a pneumatic tire filled with air inside, and has a cross-sectional shape substantially the same as that of a conventional general rubber pneumatic tire (hereinafter, appropriately referred to as a "rubber tire").

[0026] (Tire Skeleton Member 17) The tire 10 of the present embodiment has an annular and resin-made tire skeleton member 17 that forms the skeleton portion of the tire 10. The tire skeleton member 17 of the present embodiment is formed by joining a pair of tire half bodies 17A made of a resin material at the joint member 17B at the tire equatorial plane CL.

[0027] The tire skeletal member 17 includes a pair of bead portions 12 arranged at intervals in the tire width direction, a side portion 14 continuous with the outside in the tire radial direction of the bead portion 12, and a crown portion 16 continuous with the inside in the tire width direction of the side portion 14 and connecting the outer ends in the tire radial direction of the respective side portions 14. Note that the circumferential direction, width direction, and radial direction of the tire skeletal member 17 respectively correspond to the tire circumferential direction, tire width direction (tire axial direction), and tire radial direction.

[0028] The tire skeletal member 17 is formed mainly from a resin material. This resin material does not contain vulcanized rubber. Examples of the resin material include thermoplastic resins (including thermoplastic elastomers), thermosetting resins, and other general-purpose resins, as well as engineering plastics (including super engineering plastics).

[0029] The thermoplastic resin (including thermoplastic elastomer) refers to a polymer compound that softens, flows, and becomes relatively hard and strong when cooled as the temperature rises. In this specification, among these, a polymer compound that softens, flows, and becomes relatively hard and strong when cooled as the temperature rises and has rubber-like elasticity is defined as a thermoplastic elastomer, and a polymer compound that softens, flows, and becomes relatively hard and strong when cooled as the temperature rises but does not have rubber-like elasticity is defined as a non-elastomeric thermoplastic resin for distinction.

[0030] Examples of the thermoplastic resin (including thermoplastic elastomer) include polyolefin-based thermoplastic elastomers (TPO), polystyrene-based thermoplastic elastomers (TPS), polyamide-based thermoplastic elastomers (TPA), polyurethane-based thermoplastic elastomers (TPU), polyester-based thermoplastic elastomers (TPC), and dynamically crosslinked thermoplastic elastomers (TPV), as well as polyolefin-based thermoplastic resins, polystyrene-based thermoplastic resins, polyamide-based thermoplastic resins, and polyester-based thermoplastic resins.

[0031] In addition, as the above-mentioned thermoplastic material, for example, those having a deflection temperature under load (at a load of 0.45 MPa) defined in ISO 75-2 or ASTM D648 of 78°C or higher, a tensile yield strength defined in JIS K7113 of 10 MPa or higher, a tensile fracture elongation also defined in JIS K7113 of 50% or higher, and a Vicat softening temperature (Method A) defined in JIS K7206 of 130°C can be used.

[0032] A thermosetting resin refers to a polymer compound that forms a three-dimensional network structure and cures as the temperature rises. Examples of thermosetting resins include phenolic resins, epoxy resins, melamine resins, urea resins, and the like.

[0033] In addition to the above-mentioned thermoplastic resins (including thermoplastic elastomers) and thermosetting resins, general-purpose resins such as (meth)acrylic resins, EVA resins, vinyl chloride resins, fluorine-based resins, and silicone-based resins may also be used for the resin material.

[0034] Also, the tire carcass member 17 may be formed of a single resin material or may be formed of resin materials having different characteristics for each part (such as the bead part 12, the side part 14, the crown part 16, etc.) of the tire carcass member 17.

[0035] The bead part 12 is a part that fits onto the standard rim via the covering rubber 24, and an annular bead core 18 extending along the tire circumferential direction is embedded inside. The bead core 18 is composed of a bead core (not shown) such as a metal cord (for example, a steel cord), an organic fiber cord, an organic fiber cord coated with resin, or a hard resin. Regarding the bead core 18, it may be omitted as long as the rigidity of the bead part 12 can be sufficiently ensured.

[0036] As shown in FIG. 1, the side part 14 is a part that constitutes the side part of the tire 10, and is gently curved so as to protrude outward in the tire width direction from the bead part 12 toward the crown part 16.

[0037] The crown portion 16 is a part that supports a tread 32, which will be described later, provided on the outer side in the tire radial direction, and its outer peripheral surface is substantially flat along the tire width direction.

[0038] Here, the tire skeletal member 17 (specifically, the tire half 17A) is formed by injection molding. Therefore, as shown in FIG. 4, a gate mark 70 indicating the position of a gate (hereinafter referred to as the gate position) into which molten resin is injected during injection molding is formed on the tire skeletal member 17. In FIG. 4, the tire skeletal member 17 is shown in a simplified manner, and the gate mark 70 is shown schematically. Also, in FIG. 4, the flow of the resin is indicated by a dashed arrow.

[0039] In the formed tire skeletal member 17, at the gate position, for example, a gate mark 70 is formed such that it becomes cloudy compared to the parts other than the gate position and has a circular shape, so the gate position can be discriminated.

[0040] Since it can be known from the gate mark 70 that the tire skeletal member 17 is formed by injection molding, the gate mark 70 can also be said to be an injection molding mark indicating that the tire skeletal member 17 is formed by injection molding.

[0041] The gate is arranged on the outer side in the tire radial direction (that is, on the crown portion 16 side) of the tire skeletal member 17 or on the inner side in the tire radial direction (that is, on the bead portion 12 side) of the tire skeletal member 17 during injection molding. Therefore, the gate mark 70 is formed on the outer side in the radial direction of the tire skeletal member 17 or on the inner side in the radial direction of the tire skeletal member 17.

[0042] Also, a plurality of gates are arranged along the tire circumferential direction during injection molding. Therefore, a plurality of gate marks 70 are formed along the tire circumferential direction.

[0043] Furthermore, specifically during injection molding, for example, a plurality of gates are arranged along the tire circumferential direction within a range of 6 or more and 12 or less. More specifically, during injection molding, for example, a plurality of gates are arranged along the tire circumferential direction at equal angular intervals of 30 degrees or more and 60 degrees or less.

[0044] Therefore, specifically, for example, a plurality of gate marks 70 are formed along the tire circumferential direction within a range of 6 or more and 12 or less. More specifically, for example, a plurality of gate marks 70 are formed along the tire circumferential direction at equal angular intervals of 30 degrees or more and 60 degrees or less. In FIG. 4, an example is shown in which 8 gate marks 70 are formed along the tire circumferential direction at equal angular intervals of 45 degrees on the inner side in the tire radial direction of the tire skeletal member 17.

[0045] In the present embodiment, as described above, since the gate is arranged on the outer side in the radial direction of the tire skeletal member 17 or on the inner side in the radial direction of the tire skeletal member 17 during injection molding, in injection molding, the resin flow occurs in the tire radial direction.

[0046] (Belt layer 28) A belt layer 28 is provided on the outer side in the tire radial direction of the crown portion 16. This belt layer 28 is formed by spirally winding a reinforcing cord 26 coated with resin 27 in the tire circumferential direction.

[0047] (Reinforcing layer 30) A reinforcing layer 30 is arranged on the outer surface of the tire skeletal member 17. The reinforcing layer 30 extends from the inner side in the tire radial direction of the bead core 18 toward the outer side in the tire radial direction along the outer surface of the tire skeletal member 17, and further extends to the inner side in the tire radial direction of the bead core 18 on the opposite side beyond the tire equatorial plane CL.

[0048] The reinforcing layer 30 includes a plurality of reinforcing cords (not shown) covered with rubber (not shown). The reinforcing cords of the reinforcing layer 30 are monofilaments (single filaments) of organic fibers or multifilaments (twisted filaments) twisted from organic fibers, each extending in the radial direction and arranged in parallel in the tire circumferential direction. Note that the reinforcing cords of the reinforcing layer 30 may be inclined at an angle within 10° with respect to the tire radial direction in a side view of the tire.

[0049] The reinforcing layer 30 of the present embodiment is formed by attaching a ply 30L and a ply 30R, which will be described later, in which a plurality of reinforcing cords arranged parallel to each other are covered with rubber (unvulcanized), to the outer peripheral surface of the formed tire skeleton member 17. In the present embodiment, the outer surface 14A of the side portion 14 and an RFID tag 40, which will be described later, are covered by the reinforcing layer 30.

[0050] As an example of the reinforcing cords of the reinforcing layer 30, polyester cords, nylon cords, PET cords, aromatic polyamide cords, etc. can be used. Note that as the material of the reinforcing cords of the reinforcing layer 30, a metal such as steel may be used. Note that the reinforcing layer 30 may be formed by covering the reinforcing cords with resin instead of rubber.

[0051] (Tread 32) A rubber tread 32 is disposed outside the reinforcing layer 30 in the tire radial direction. This tread 32 covers the outer portion of the reinforcing layer 30 in the tire radial direction. The rubber material constituting the tread 32 is the same as the tread rubber of a conventional pneumatic tire or the tread rubber for a retread tire. Further, a tread pattern (not shown) is formed on the ground contact surface with the road surface on the tread 32.

[0052] (Covering rubber 24) As shown in FIGS. 1 and 2, a covering rubber 24 is provided on the outer surface of the reinforcing layer 30 attached to the tire skeletal member 17, extending from the outer surface 14A on the outer side of the tire of the side portion 14 to the inner surface 12B on the inner side of the tire of the bead portion 12. Specifically, the covering rubber 24 is folded back from the outer surface 14A of the side portion 14 via the outer surface 12A of the bead portion 12 toward the inner surface 12B side of the bead portion 12.

[0053] The outer end portion on the outer side in the tire radial direction of the covering rubber 24 is joined (vulcanization-bonded) to the tread 32 and the tire skeletal member 17 while being sandwiched between the reinforcing layer 30 attached to the tire skeletal member 17 and the outer end portion on the outer side in the tire width direction of the tread 32. In this embodiment, the entire outer surface of the reinforcing layer 30 attached to the tire skeletal member 17 is covered by the tread 32 and the covering rubber 24.

[0054] As the rubber material constituting the covering rubber 24, a rubber material having higher weather resistance and sealing property with the standard rim than the tire skeletal member 17 is used. The rubber material constituting the covering rubber 24 is the same as the rubber material used for the sidewall and the bead portion of a conventional general rubber pneumatic tire.

[0055] (Thick portion 60) As shown in FIGS. 1, 2, and 3, a thick portion 60 is formed in the side portion 14 of the tire skeletal member 17. The thick portion 60 is thicker in the tire width direction than the other portion (hereinafter referred to as the general portion 62) of the side portion 14 by protruding in the tire width direction.

[0056] In this embodiment, the thick portion 60 is thickened in the tire width direction by protruding inward in the tire width direction on the inner surface 14B on the inner side in the tire width direction of the side portion 14. The thick portion 60 is formed in a region including the tire maximum width portion 17C (that is, the portion where the dimension in the tire width direction is the largest) in the tire radial direction of the tire skeletal member 17. Further, the thick portion 60 is formed along the entire circumference of the side portion 14 in the tire circumferential direction of the tire skeletal member 17.

[0057] The thickness of the thick portion 60 is, as an example, made thicker in the range of 1.0 mm or more and 4.0 mm or less (preferably 1.5 mm or more and 4 mm or less) than the thickness of the thinnest portion in the side portion 14.

[0058] (RFID tag 40) As shown in FIGS. 1, 2, and 3, the tire 10 has an RFID tag 40. This RFID tag 40 is configured to be capable of wireless communication with a reader (not shown).

[0059] Specifically, as shown in FIGS. 5(A) and 5(B), the RFID tag 40 has a resin case 42, an RFID chip 44 and an antenna 46 housed in the case 42. In the present embodiment, a pair of antennas 46 extend from the RFID chip 44 in opposite directions to each other.

[0060] The case 42 is plate-shaped and is formed in a substantially rectangular shape having the extending direction of the antenna 46 (arrow W direction) as the longitudinal direction in plan view. In the present embodiment, the case 42 is curved in an arc shape on the short side. Further, the case 42 has flexibility, and the RFID tag 40 (specifically, the case 42) can be deformed according to the deformation of the tire 10 (see FIG. 5(B)).

[0061] In the present embodiment, the case 42 is formed of the same resin material as the resin material forming the tire skeleton member 17. Note that the shape of the case 42 is not limited to the aforementioned substantially rectangular shape. Further, the case 42 may be formed, for example, in a film shape.

[0062] The RFID tag 40 is provided in the thickness portion 60 (i.e., the side portion 14) so as to be integrated with the thickness portion 60 in the side portion 14. Specifically, the RFID tag 40 is integrated with the side portion 14 including the thickness portion 60 of the tire half 17A by insert molding, in which the tire half 17A is injection molded while the RFID tag 40 is disposed in the molding die for molding the tire half 17A. In this way, the thickness portion 60 (i.e., the side portion 14) is molded so that the RFID tag 40 (specifically, the case 42) and the thickness portion 60 are integrated.

[0063] In the present embodiment, the RFID tag 40 protrudes in the tire width direction from the general portion 62 and forms a part of the thickness portion 60. In the present embodiment, the entire RFID tag 40 protrudes inward in the tire width direction from the general portion 62. Further, the RFID tag 40 forms a part of the thickness portion 60 in the tire circumferential direction, and the thickness portion 60 including the RFID tag 40 is formed along the entire circumference of the side portion 14 in the tire circumferential direction.

[0064] Note that, by observing the interface between the RFID tag 40 (specifically, the case 42) and the side portion 14 with an observation device (e.g., an electron microscope), for example, it is possible to determine whether the RFID tag 40 is insert molded or the RFID tag 40 is welded to the side portion 14 after the tire half 17A is molded. In other words, the tire skeleton member 17 has a molding mark indicating that the RFID tag 40 is insert molded.

[0065] The longitudinal direction of the RFID tag 40 (specifically, the longitudinal direction of the case 42) is arranged along the tire circumferential direction (arrow TC direction). Therefore, the extending direction (arrow W direction) of the antenna 46 of the RFID tag 40 is arranged along the tire circumferential direction. Further, the RFID tag 40 is arranged in a region including the tire maximum width portion 17C (i.e., the portion where the dimension in the tire width direction is the largest) in the tire radial direction of the tire skeleton member 17.

[0066] In addition, in this embodiment, as shown in FIG. 2, the RFID tag 40 is provided on the side portion 14 on one side.

[0067] (Function) In the tire 10 of this embodiment, the thick portion 60 formed in the side portion 14 protrudes in the tire width direction from the general portion 62 of the side portion 14, so that the thickness in the tire width direction is thicker than that of the general portion 62. As a result, compared with the configuration in which the thickness of the thick portion 60, the general portion 62, and the tire width direction is the same, vibration in the side portion 14 can be suppressed. As a result, the quietness of the tire 10 can be improved.

[0068] Furthermore, in the tire 10, the RFID tag 40 is provided in the thick portion 60 so as to be integrated with the thick portion 60. As described above, since the thick portion 60 protrudes in the tire width direction from the general portion 62, a concave portion for forming the thick portion 60 is provided in the mold when the tire skeleton member 17 is formed by injection molding. Further, in this embodiment, since the RFID tag 40 protrudes in the tire width direction from the general portion 62, a concave portion for arranging the RFID tag 40 is provided in the mold when the tire skeleton member 17 is formed by injection molding.

[0069] And by arranging the RFID tag 40 in the concave portion of the mold, when the tire skeleton member 17 is formed by injection molding, it is less affected by the resin flow. Therefore, displacement of the RFID tag 40 can be suppressed.

[0070] As described above, according to the tire 10, in the tire 10 having the resin tire skeleton member 17 and the RFID tag 40, it is possible to suppress displacement of the RFID tag 40 while improving quietness.

[0071] Also, in the tire 10, the thick portion 60 including the RFID tag 40 is formed over the entire circumference of the side portion 14 along the tire circumferential direction. Therefore, compared with the configuration in which the thick portion 60 including the RFID tag 40 is formed in a part of the side portion 14 in the tire circumferential direction, the quietness of the tire 10 can be improved.

[0072] Also, in the tire 10, the longitudinal direction of the RFID tag 40 is arranged along the tire circumferential direction. Therefore, compared with a configuration in which the longitudinal direction of the RFID tag 40 is arranged along the tire radial direction, it is less affected by deformation when the tire 10 is in contact with the ground. For this reason, breakage of the RFID tag 40 can be suppressed.

[0073] Also, in the tire 10, the side portion 14 of the tire skeleton member 17 is molded so as to be integrated with the case 42 that houses the RFID chip 44 and the antenna 46. For this reason, the RFID tag 40 can be easily incorporated into the tire skeleton member 17.

[0074] Also, in the tire 10, the resin material forming the case 42 of the RFID tag 40 is of the same type as the resin material forming the tire skeleton member 17. For this reason, the case 42 can be firmly integrated with the side portion 14 as compared with a tire in which the resin materials are of different types.

[0075] (Tire aspect ratio) In the tire 10 of the present embodiment, the tire aspect ratio is set in a range of, for example, 10 or more and 65 or less (preferably in a range of 35 or more and 55 or less). In a tire having an aspect ratio within the above range, since it is possible to make the side portion 14 relatively thin, it is particularly suitable for achieving both a reduction in rolling resistance due to the thinning of the side portion 14 and an improvement in quietness due to the thick portion 60. That is, if the aspect ratio of the tire 10 is less than 10, it becomes easy to pick up road surface vibrations, and on the other hand, the side portion 14 where the thick portion 60 can be locally provided becomes small, so it is difficult to obtain the sufficient effects of the present disclosure. On the other hand, if the aspect ratio of the tire exceeds 65, the weight of the tire itself becomes large, and thus the rolling resistance cannot be reduced.

[0076] (Other embodiments) As described above, an example of an embodiment of the present disclosure has been explained. However, the embodiments of the present disclosure are not limited to the above, and it goes without saying that various modifications can be made without departing from the gist thereof, other than the above.

[0077] In the above-described embodiment, the thickness portion 60 was thickened in the tire width direction by protruding inward in the tire width direction on the inner surface 14B on the inner side in the tire width direction of the side portion 14, but the present disclosure is not limited to this. As the thickness portion of the present disclosure, the thickness in the tire width direction may be thickened by protruding outward in the tire width direction on the outer surface 14A on the outer side in the tire width direction of the side portion 14.

[0078] Also, in the above-described embodiment, the thickness portion 60 was formed in a region including the tire maximum width portion 17C (that is, the portion where the dimension in the tire width direction is the largest) in the tire radial direction of the tire skeleton member 17, but the present disclosure is not limited to this. As the thickness portion of the present disclosure, a configuration may be adopted in which it is formed in a region shifted inward or outward in the tire radial direction from the tire maximum width portion 17C.

[0079] Also, in the above-described embodiment, the thickness portion 60 including the RFID tag 40 was formed over the entire circumference of the side portion 14 along the tire circumferential direction of the tire skeleton member 17, but the present disclosure is not limited to this. As the thickness portion of the present disclosure, a configuration may be adopted in which it is formed in a part of the tire circumferential direction in the side portion 14.

[0080] Also, in the above-described embodiment, the thickness of the thickness portion 60 was thickened in the range of 1.0 mm or more and 4.0 mm or less (preferably 1.5 mm or more and 4 mm or less) than the thickness of the thinnest portion in the side portion 14, but the present disclosure is not limited to this. The thickness of the thickness portion of the present disclosure is not limited to the above range, and it is sufficient that the thickness in the tire width direction is thicker than the general portion 62 of the side portion 14.

[0081] In the foregoing embodiment, the RFID tag 40 was provided on one side portion 14 in the tire skeleton member 17 as shown in FIG. 2, but the present disclosure is not limited thereto. As the RFID tag of the present disclosure, it may be provided on each of the side portions 14 on both sides in the tire skeleton member 17. That is, as the RFID tag of the present disclosure, it may be provided on at least one of the side portions 14 on both sides in the tire skeleton member 17.

[0082] Further, in the foregoing embodiment, the entire RFID tag 40 protruded inward in the tire width direction from the general portion 62, but the present disclosure is not limited thereto. As the RFID tag of the present disclosure, a configuration in which a part of itself protrudes inward in the tire width direction from the general portion 62 may be adopted. Also, as the RFID tag of the present disclosure, a configuration in which it protrudes outward in the tire width direction from the general portion 62 may be adopted.

[0083] Further, in the foregoing embodiment, the resin material forming the case 42 and the resin material forming the side portion 14 were the same type of resin material, but the present disclosure is not limited thereto. As the tire 10 of the present disclosure, the resin material forming the case 42 and the resin material forming the side portion 14 may be different types of resin materials.

[0084] Further, in the foregoing embodiment, the tire aspect ratio was set in a range of, for example, 10 or more and 65 or less (preferably in a range of 35 or more and 55 or less), but the present disclosure is not limited thereto, and the tire aspect ratio of the present disclosure can be set in any range.

[0085] Further, in the foregoing embodiment, the reinforcing layer 30 is configured to include a plurality of reinforcing cords (not shown) covered with rubber (not shown), but the present disclosure is not limited to this configuration. The reinforcing layer 30 may be configured to include a plurality of reinforcing cords (not shown) covered with a resin material (not shown).

Explanation of Reference Numerals

[0086] 10… Tire, 12… Bead portion, 14… Side portion, 16… Crown portion, 17… Tire skeleton member, 40… RFID tag, 42… Case, 44… RFID chip, 46… Antenna, 60… Thick portion, 62… General portion (an example of other portions)

Claims

1. An annular and resinous tire skeletal member including a bead portion, a side portion continuous with the outside in the tire radial direction of the bead portion, and a crown portion continuous with the inside in the tire width direction of the side portion; A thick portion formed in the side portion and having a greater thickness in the tire width direction than other portions of the side portion by protruding in the tire width direction beyond the other portions; An RFID tag provided in the thick portion so as to be integrated with the thick portion; A tire having the above.

2. The RFID tag protrudes in the tire width direction beyond the other portions and forms part of the thick portion, The tire according to Claim 1.

3. The RFID tag forms part of the thick portion in the tire circumferential direction, The thick portion including the RFID tag is formed over the entire circumference of the side portion along the tire circumferential direction, The tire according to Claim 1.

4. The longitudinal direction of the RFID tag is arranged along the tire circumferential direction, The tire according to Claim 1.

5. The RFID tag has a resin case, an RFID chip and an antenna housed in the case, The side portion is formed so as to be integrated with the case The tire according to Claim 1.

6. The case is formed of the same resin material as the resin material forming the tire skeletal member, The tire according to Claim 5.

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