tire

Abstract

This tire has: an annular resin-made tire frame member provided with a bead part, a side part continuous with the tire-radial-direction outer side of the bead part, and a crown part continuous with the tire-width-direction inner side of the side part; and an RFID tag disposed on the side part so as to be integrated with the side part, the longitudinal direction of the RFID tag following the tire radial direction.

Description

tire

[0001] The present disclosure relates to tires.

[0002] Japanese Patent Application Laid-Open Publication No. 2023-87598 discloses a tire having an annular resin tire frame member and an RFID tag. The tire frame member includes a bead portion, a side portion connected to the outer side of the bead portion in the tire radial direction, and a crown portion connected to the inner side of the side portion in the tire width direction. The RFID tag is attached to the outer surface of the side portion.

[0003] In the tire described in JP 2023-87598 A, the longitudinal direction of the RFID tag attached to the outer surface of the side portion of the tire frame member is arranged along the tire circumferential direction.

[0004] Therefore, when a resin tire frame component is molded by injection molding, if an RFID tag is set in a mold and integrated into the side portion, if the gate is located on the bead portion side or the crown portion side, there is a risk that the position of the RFID tag will be shifted due to the flow of resin that occurs from the gate in the tire radial direction.

[0005] The present disclosure aims to suppress positional deviation of an RFID tag in a tire having a tire frame member made of resin and an RFID tag.

[0006] The tire disclosed herein includes an annular tire frame member made of resin and including a bead portion, a side portion connected to the outer side of the bead portion in the tire radial direction, and a crown portion connected to the inner side of the side portion in the tire width direction, and an RFID tag arranged in the side portion with its longitudinal direction aligned with the tire radial direction so as to be integrated with the side portion.

[0007] According to the present disclosure, in a tire having a tire frame member made of resin and an RFID tag, it is possible to suppress positional deviation of the RFID tag.

[0008] Fig. 5A is a cross-sectional view showing one side of a cross section along the tire width direction of a tire according to the present embodiment. Fig. 6 is a perspective cross-sectional view showing a cross section of the tire of Fig. 1. Fig. 7 is an enlarged view of a portion indicated by arrow 3X in Fig. 1. Fig. 8 is a side view of a tire frame member included in the tire of Fig. 1. Fig. 9 is a plan view of an RFID tag included in the tire of Fig. 1. Fig. 10 is a side view of the RFID tag of Fig. 5A.

[0009] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same or similar components. Note that duplicated explanations and reference numerals may be omitted in the embodiments described below. Furthermore, all drawings used in the following description are schematic, and the dimensional relationships, ratios, etc. of each element shown in the drawings do not necessarily match those in reality. Furthermore, the dimensional relationships, ratios, etc. of each element between multiple drawings do not necessarily match.

[0010] 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. Hereinafter, the side closer to the tire rotation axis along the tire radial direction will be referred to as the "tire radially inner side," and the side farther from the tire rotation axis along the tire radial direction will be referred to as the "tire radially outer side." Meanwhile, the side closer to the tire equatorial plane CL along the tire width direction will be referred to as the "tire widthwise inner side," and the side farther from the tire equatorial plane CL along the tire width direction will be referred to as the "tire widthwise outer side." The measurement method for each dimension conforms to the method described in the 2021 YEAR BOOK published by JATMA (Japan Automobile Tire Manufacturers Association).

[0011] As shown in FIG. 1, the tire 10 of this embodiment is a pneumatic tire that is filled with air, and has a cross-sectional shape that is substantially the same as that of a conventional pneumatic tire made of rubber (hereinafter referred to as a "rubber tire" as appropriate).

[0012] (Tire Frame Member 17) The tire 10 of this embodiment has an annular tire frame member 17 made of resin that forms a frame portion of the tire 10. The tire frame member 17 of this embodiment is formed by joining a pair of tire halves 17A made of a resin material at the tire equatorial plane CL by a joining member 17B.

[0013] The tire frame member 17 includes a pair of bead portions 12 spaced apart in the tire width direction, side portions 14 connected to the tire radially outer sides of the bead portions 12, and a crown portion 16 connected to the tire widthwise inner sides of the side portions 14 and connecting the tire radially outer ends of each side portion 14. The circumferential direction, width direction, and radial direction of the tire frame member 17 correspond to the tire circumferential direction, tire axial direction, and tire radial direction, respectively.

[0014] The tire frame member 17 is formed primarily from a resin material. This resin material does not include 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).

[0015] Thermoplastic resins (including thermoplastic elastomers) refer to polymeric compounds that soften and flow with increasing temperature and become relatively hard and strong when cooled. In this specification, a distinction is made between thermoplastic elastomers and polymeric compounds that soften and flow with increasing temperature and become relatively hard and strong when cooled, and have rubber-like elasticity, and non-elastomers and polymeric compounds that soften and flow with increasing temperature and become relatively hard and strong when cooled, but do not have rubber-like elasticity, as thermoplastic resins that are not elastomers.

[0016] Examples of thermoplastic resins (including thermoplastic elastomers) include polyolefin thermoplastic elastomers (TPO), polystyrene thermoplastic elastomers (TPS), polyamide thermoplastic elastomers (TPA), polyurethane thermoplastic elastomers (TPU), polyester thermoplastic elastomers (TPC), and dynamically crosslinked thermoplastic elastomers (TPV), as well as polyolefin thermoplastic resins, polystyrene thermoplastic resins, polyamide thermoplastic resins, and polyester thermoplastic resins.

[0017] Furthermore, as the thermoplastic material, for example, a material having a deflection temperature under load (at a load of 0.45 MPa) of 78°C or higher as specified in ISO 75-2 or ASTM D648, a tensile yield strength of 10 MPa or higher as specified in JIS K7113, a tensile elongation at break of 50% or higher as specified in JIS K7113, and a Vicat softening temperature (method A) of 130°C as specified in JIS K7206 can be used.

[0018] A thermosetting resin is a polymer compound that forms a three-dimensional network structure and hardens as the temperature rises. Examples of thermosetting resins include phenolic resin, epoxy resin, melamine resin, and urea resin.

[0019] In addition to the thermoplastic resins (including thermoplastic elastomers) and thermosetting resins described above, general-purpose resins such as (meth)acrylic resins, EVA resins, vinyl chloride resins, fluorine-based resins, and silicone-based resins may also be used as the resin material.

[0020] Furthermore, the tire frame member 17 may be formed from a single resin material, or each portion of the tire frame member 17 (bead portion 12, side portion 14, crown portion 16, etc.) may be formed from a resin material having different characteristics.

[0021] The bead portion 12 is a portion that fits onto a standard rim via a covering rubber 24, and has an annular bead core 18 embedded therein that extends circumferentially along the tire. The bead core 18 is made of a bead cord (not shown) such as a metal cord (e.g., a steel cord), an organic fiber cord, a resin-coated organic fiber cord, or a hard resin. Note that the bead core 18 may be omitted if sufficient rigidity of the bead portion 12 can be ensured.

[0022] As shown in FIG. 1 , the side portion 14 is a portion that constitutes the side of the tire 10, and is gently curved from the bead portion 12 toward the crown portion 16 so as to be convex outward in the tire width direction.

[0023] The crown portion 16 is a portion that supports a tread 32 (described later) that is provided on the outer side in the tire radial direction, and has an outer peripheral surface that is substantially flat along the tire width direction.

[0024] Here, the tire frame member 17 (specifically, the tire half body 17A) is formed by injection molding. For this reason, as shown in Fig. 4 , a gate mark 70 is formed on the tire frame member 17, indicating the position of the gate (hereinafter referred to as the gate position) through which molten resin is injected during injection molding. Note that Fig. 4 shows a simplified view of the tire frame member 17 and also schematically illustrates the gate mark 70. Also, in Fig. 4 , dashed arrows indicate the flow of resin.

[0025] After molding, the tire frame member 17 has gate marks 70 at the gate positions that are, for example, cloudy and circular compared to areas other than the gate positions, making it possible to identify the gate positions.

[0026] In addition, since the gate marks 70 indicate that the tire frame member 17 was formed by injection molding, the gate marks 70 can also be said to be injection molding marks that indicate that the tire frame member 17 was formed by injection molding.

[0027] During injection molding, the gate is disposed on the outer side of the tire frame member 17 in the tire radial direction (i.e., the crown portion 16 side) or on the inner side of the tire frame member 17 in the tire radial direction (i.e., the bead portion 12 side). Therefore, the gate mark 70 is formed on the outer side of the tire frame member 17 in the radial direction or on the inner side of the tire frame member 17 in the radial direction.

[0028] Furthermore, a plurality of gates are arranged along the tire circumferential direction during injection molding, and therefore a plurality of gate marks 70 are formed along the tire circumferential direction.

[0029] Furthermore, specifically, during injection molding, a plurality of gates are arranged along the tire circumferential direction, for example, in a range of 6 to 12. Even more specifically, during injection molding, a plurality of gates are arranged along the tire circumferential direction, for example, at equal angular intervals of 30 degrees to 60 degrees.

[0030] Therefore, specifically, a plurality of gate marks 70 are formed along the tire circumferential direction, for example, in the range of 6 to 12. More specifically, a plurality of gate marks 70 are formed along the tire circumferential direction at equal angular intervals of, for example, 30 degrees to 60 degrees. Note that Fig. 4 shows an example in which eight gate marks 70 are formed along the tire circumferential direction at equal angular intervals of 45 degrees.

[0031] In this embodiment, as described above, the gate is positioned radially outside the tire frame member 17 or radially inside the tire frame member 17 during injection molding, and therefore, during injection molding, resin flows in the tire radial direction.

[0032] (Belt layer 28) A belt layer 28 is provided on the tire radial outer side of the crown portion 16. This belt layer 28 is configured by winding a reinforcing cord 26 coated with a resin 27 spirally in the tire circumferential direction.

[0033] (Reinforcing layer 30) A reinforcing layer 30 is disposed on the outer surface of the tire frame member 17. The reinforcing layer 30 extends along the outer surface of the tire frame member 17 from the inner side in the tire radial direction of the bead core 18 toward the outer side in the tire radial direction, and further extends beyond the tire equatorial plane CL toward the inner side in the tire radial direction of the opposite bead core 18.

[0034] The reinforcing layer 30 includes a plurality of reinforcing cords (not shown) coated with rubber (not shown). The reinforcing cords of the reinforcing layer 30 are monofilaments (single wires) of organic fibers or multifilaments (twisted wires) made of twisted organic fibers, and extend in the radial direction and are arranged in parallel in the tire circumferential direction. The reinforcing cords of the reinforcing layer 30 may be inclined at an angle of 10° or less with respect to the tire radial direction in a side view of the tire.

[0035] The reinforcing layer 30 of this embodiment is formed by bonding plies 30L and 30R, which will be described later and which are made by covering a plurality of reinforcing cords arranged parallel to one another with rubber (unvulcanized), to the outer peripheral surface of the molded tire frame member 17. In this embodiment, the reinforcing layer 30 covers the outer surface 14A of the side portion 14 and an RFID tag 40, which will be described later.

[0036] Examples of the reinforcing cords that can be used in the reinforcing layer 30 include polyester cords, nylon cords, PET cords, and aromatic polyamide cords. Metals such as steel may also be used as the material for the reinforcing cords in the reinforcing layer 30. The reinforcing layer 30 may be made of reinforcing cords coated with resin instead of rubber.

[0037] (Tread 32) A rubber tread 32 is disposed on the radially outer side of the reinforcing layer 30. The tread 32 covers the radially outer portion of the reinforcing layer 30. The rubber material constituting the tread 32 is similar to the tread rubber of conventional pneumatic tires and the tread rubber of retread tires. A tread pattern (not shown) is formed on the contact surface of the tread 32 with the road surface.

[0038] 1 and 2 , a covering rubber 24 is provided on the outer surface of the reinforcing layer 30 attached to the tire frame member 17, extending from the outer surface 14A of the side portion 14 on the outer side of the tire to the inner surface 12B of the bead portion 12 on the inner side of the tire. Specifically, the covering rubber 24 is folded back from the outer surface 14A of the side portion 14 to the outer surface 12A of the bead portion 12 toward the inner surface 12B of the bead portion 12.

[0039] An outer end portion of the covering rubber 24 on the outer side in the tire radial direction is sandwiched between the reinforcing layer 30 attached to the tire frame member 17 and an outer end portion of the tread 32 on the outer side in the tire width direction, and is joined (vulcanization bonded) to the tread 32 and the tire frame member 17. In this embodiment, the outer surface of the reinforcing layer 30 attached to the tire frame member 17 is entirely covered by the tread 32 and the covering rubber 24.

[0040] The rubber material that constitutes the covering rubber 24 is a rubber material that has better weather resistance and sealing properties with a standard rim than the tire frame member 17. The rubber material that constitutes the covering rubber 24 is the same as the rubber material used for the sidewalls and bead portions of conventional pneumatic tires made of general rubber.

[0041] 1, 2, and 3, the tire 10 has an RFID tag 40. The RFID tag 40 is configured to be capable of wireless communication with a reader (not shown).

[0042] 5A and 5B, the RFID tag 40 specifically includes a resin case 42, and an RFID chip 44 and an antenna 46 housed in the case 42. In this embodiment, the pair of antennas 46 extend from the RFID chip 44 in opposite directions.

[0043] The case 42 is plate-shaped and, in a plan view, is formed into a generally rectangular shape with the longitudinal direction being the extension direction (direction of arrow W) of the antenna 46. In this embodiment, the case 42 has a short side curved in an arc shape. Furthermore, the case 42 is flexible, and the RFID tag 40 (specifically, the case 42) can deform in response to deformation of the tire 10 (see FIG. 5B ).

[0044] In the present embodiment, the case 42 is formed from the same type of resin material as the resin material forming the tire frame member 17. The shape of the case 42 is not limited to the above-described substantially rectangular shape. The case 42 may also be, for example, in the form of a film.

[0045] The side portion 14 of the tire frame member 17 is molded so that the RFID tag 40 is integrated with the side portion 14. Specifically, the RFID tag 40 is integrated with the side portion 14 of the tire half body 17A by injection molding the tire half body 17A (hereinafter referred to as insert molding) while the RFID tag 40 is placed in a mold that molds the tire half body 17A.

[0046] By observing the interface between the RFID tag 40 (specifically, the case 42) and the side portion 14 with, for example, an observation device (for example, an electron microscope), it is possible to determine whether the RFID tag 40 is insert-molded or whether the RFID tag 40 is welded to the side portion 14 after the tire half body 17A is molded. In other words, the tire frame member 17 has molding marks that indicate that the RFID tag 40 is insert-molded.

[0047] The RFID tag 40 is arranged such that its longitudinal direction (specifically, the longitudinal direction of the case 42) is aligned with the tire radial direction (the direction of the arrow TR). Therefore, the RFID tag 40 is arranged such that the extension direction of the antenna 46 (the direction of the arrow W) is aligned with the tire radial direction.

[0048] In this embodiment, as shown in Fig. 4, the RFID tag 40 is arranged in the tire circumferential direction between a plurality of gate marks 70. Specifically, the RFID tag 40 is arranged in the tire circumferential direction such that at least a portion of the RFID tag 40 overlaps in the tire radial direction with a central position 70A (see Fig. 4) between one gate mark 70 and another gate mark 70 adjacent to that gate mark 70 in the tire circumferential direction.

[0049] In the present embodiment, as shown in FIG. 3 , for example, the RFID tag 40 is provided on the outer surface 14A of the side portion 14 of the tire frame member 17. The outer surface 14A is a surface facing outward in the tire width direction. Specifically, the RFID tag 40 is housed in a recess 17D formed in the outer surface 14A. In the present embodiment, the RFID tag 40 is provided on one side portion 14 as shown in FIG. 2 . Furthermore, in the present embodiment, the RFID tag 40 is disposed radially outward of a tire maximum width portion 17C of the tire frame member 17 (i.e., the portion where the dimension in the tire width direction is greatest). In other words, the RFID tag 40 is disposed along the side portion 14, closer to the crown portion 16 than the tire maximum width portion 17C.

[0050] 3, the tire 10 has a holding portion 60 that holds the RFID tag 40 in a state where the longitudinal direction of the RFID tag 40 is arranged along the tire radial direction. Specifically, the holding portion 60 has a function of holding the RFID tag 40 in a state where the longitudinal direction of the RFID tag 40 is arranged along the tire radial direction when the RFID tag 40 is arranged in a mold that forms the tire half 17A.

[0051] In this embodiment, the holding unit 60 holds a part or all of the RFID tag 40, thereby positioning the RFID tag 40 so that the longitudinal direction of the RFID tag 40 is aligned with the tire radial direction.

[0052] A knitted fabric made of knitted resin fibers can be used as the retaining portion 60. As an example, the retaining portion 60 is formed from the same type of resin material as the resin material that forms the tire frame member 17.

[0053] In this embodiment, instead of or in addition to the holding portion 60, the RFID tag 40 may be held in a recess or the like of a mold in which the tire half 17A is injection molded.

[0054] (Operation) In the tire 10 of this embodiment, the RFID tag 40 is disposed in the side portion 14 so as to be integrated with the side portion 14, with the longitudinal direction thereof extending along the tire radial direction.

[0055] Therefore, when the tire frame member 17 is molded by injection molding, the RFID tag 40 is set in a mold and integrated with the side portion 14. Even if resin flows in the tire radial direction, the RFID tag 40 is less susceptible to the flow of resin than in a tire in which the longitudinal direction of the RFID tag 40 is arranged along the tire circumferential direction. This makes it possible to prevent the RFID tag 40 from shifting out of position.

[0056] Furthermore, in the tire 10, the holding portion 60 holds the RFID tag 40 in a state in which the longitudinal direction of the RFID tag 40 is arranged along the tire radial direction. Therefore, displacement of the RFID tag 40 can be suppressed compared to a tire without a holding portion 60.

[0057] Furthermore, in tire 10, the resin material forming the retaining portion 60 is the same type as the resin material forming the tire frame member 17, so the retaining portion 60 can be firmly integrated with the side portion 14 compared to tires in which the resin materials are of different types.

[0058] Furthermore, in the tire 10, the RFID tag 40 is arranged between a plurality of gate positions in the tire circumferential direction.

[0059] Therefore, compared to a tire in which the RFID tag 40 is located at the same position as the gate in the tire circumferential direction, this tire is less susceptible to the flow of resin from the gate during injection molding (see the dashed arrow in Figure 4), which makes it possible to prevent the RFID tag 40 from shifting out of position.

[0060] Furthermore, in the tire 10, the side portion 14 of the tire frame member 17 is molded to be integrated with the case 42 that houses the RFID chip 44 and the antenna 46, so that the RFID tag 40 can be easily incorporated into the tire frame member 17.

[0061] Furthermore, in the tire 10, the resin material forming the case 42 of the RFID tag 40 is the same type as the resin material forming the tire frame member 17, so the case 42 can be firmly integrated with the side portion 14 compared to tires in which the resin materials are of different types.

[0062] (Other Embodiments) The above describes one example of an embodiment of the present disclosure, but the embodiment of the present disclosure is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present disclosure.

[0063] In the above-described embodiment, the RFID tag 40 is provided in one side portion 14 of the tire frame member 17 as shown in FIG. 2 , but this is not limited to this. The RFID tag of the present disclosure may be provided in each of the side portions 14 on both sides of the tire frame member 17. In other words, it is sufficient that the RFID tag of the present disclosure is provided in at least one of the side portions 14 on both sides of the tire frame member 17.

[0064] Furthermore, in the above-described embodiment, the RFID tag 40 is housed in the recess 17D formed in the outer surface 14A of the side portion 14, but this is not limited to this. The RFID tag of the present disclosure may be configured, for example, to be disposed on the outer surface 14A of the side portion 14 where no recess is formed. The RFID tag of the present disclosure may be disposed on the inner surface of the side portion 14 of the tire frame member 17. Note that this inner surface is the surface facing inward in the tire width direction.

[0065] In the above-described embodiment, the RFID tag 40 is disposed radially outward of the tire maximum width portion 17C of the tire frame member 17, but this is not limiting. The RFID tag of the present disclosure may be disposed radially inward of the tire maximum width portion 17C of the tire frame member 17.

[0066] In the above-described embodiment, the RFID tag 40 is disposed between the gate positions in the tire circumferential direction, but this is not limiting. The RFID tag of the present disclosure may be disposed at the same position as the gate position in the tire circumferential direction.

[0067] In the above-described embodiment, the resin material forming the retaining portion 60 and the resin material forming the side portion 14 are the same type of resin material, but this is not limited to this. In the tire 10 of the present disclosure, the resin material forming the retaining portion 60 and the resin material forming the side portion 14 may be different types of resin materials.

[0068] In the above-described embodiment, the resin material forming the case 42 and the resin material forming the side portion 14 are the same type of resin material, but this is not limited to this. In 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.

[0069] In the above-described embodiment, the reinforcing layer 30 is configured to include a plurality of reinforcing cords (not shown) coated with rubber (not shown), but the present disclosure is not limited to this configuration. The reinforcing layer 30 may also be configured to include a plurality of reinforcing cords (not shown) coated with a resin material (not shown).

[0070] (Note) A tire according to a first aspect of the present disclosure includes an annular tire frame member made of resin, the tire frame member including bead portions, side portions connected to the outer side of the bead portions in the tire radial direction, and a crown portion connected to the inner side of the side portions in the tire width direction, and an RFID tag arranged in the side portions with its longitudinal direction aligned with the tire radial direction so as to be integrated with the side portions.

[0071] In the tire according to the first aspect of the present disclosure, the RFID tag is disposed in the side portion so as to be integrated with the side portion, with the longitudinal direction thereof extending along the tire radial direction.

[0072] Therefore, when the tire frame member is molded by injection molding, the RFID tag is set in a mold and integrated with the side portion, and even if resin flows in the tire radial direction, the RFID tag is less susceptible to the flow of resin than in tires in which the longitudinal direction of the RFID tag is aligned along the tire circumferential direction, thereby preventing the RFID tag from shifting position.

[0073] The tire of a second aspect of the present disclosure is the tire of the first aspect, further including a holding portion that holds the RFID tag in a state where the longitudinal direction of the RFID tag is arranged along the tire radial direction.

[0074] In the tire according to the second aspect of the present disclosure, the retaining portion holds the RFID tag in a state in which the longitudinal direction of the RFID tag is aligned with the tire radial direction, which makes it possible to suppress positional deviation of the RFID tag compared to a tire without a retaining portion.

[0075] In a tire according to a third aspect of the present disclosure, in the second aspect, the retaining portion is formed from the same type of resin material as the resin material that forms the tire frame member.

[0076] In the tire of the third aspect of the present disclosure, the resin material forming the retaining portion is the same type as the resin material forming the tire frame member, and therefore the retaining portion can be more firmly integrated with the side portion than in tires in which the resin materials are of different types.

[0077] A tire according to a fourth aspect of the present disclosure is any one of the first to third aspects, further comprising gate marks indicating a plurality of gate positions arranged along the tire circumferential direction on the bead portion side or the crown portion side of the tire frame member that is injection molded, and the RFID tag is arranged between the plurality of gate positions in the tire circumferential direction.

[0078] In a tire according to a fourth aspect of the present disclosure, the RFID tag is arranged between a plurality of gate positions in the tire circumferential direction.

[0079] Therefore, compared to tires in which the RFID tag is located at the same position as the gate in the tire circumferential direction, it is less susceptible to the influence of the flow of resin that flows from the gate during injection molding, which makes it possible to suppress misalignment of the RFID tag.

[0080] A fifth aspect of the tire of the present disclosure is any one of the first to fourth aspects, in which the RFID tag has a resin case and an RFID chip and antenna housed in the case, and the side portion is molded to be integrated with the case.

[0081] In the tire of the fifth aspect of the present disclosure, the side portion of the tire frame member is molded to be integrated with the case that houses the RFID chip and antenna, so that the RFID tag can be easily incorporated into the tire frame member.

[0082] A sixth aspect of the present disclosure provides the tire of the fifth aspect, wherein the case is formed from the same type of resin material as the resin material that forms the tire frame member.

[0083] In the tire of the sixth aspect of the present disclosure, the resin material forming the RFID tag case is the same as the resin material forming the tire frame member, so the case can be more firmly integrated into the side portion than in tires in which the resin materials are different types.

[0084] The disclosure of Japanese Patent Application No. 2023-209350, filed on December 12, 2023, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards mentioned herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. A tire having: an annular tire frame member made of resin, the tire including a bead portion, a side portion connected to the outer side of the bead portion in the tire radial direction, and a crown portion connected to the inner side of the side portion in the tire width direction; and an RFID tag arranged in the side portion with its longitudinal direction aligned with the tire radial direction so as to be integrated with the side portion.

2. The tire according to claim 1, further comprising a holder for holding the RFID tag in a state in which the longitudinal direction of the RFID tag is arranged along the tire radial direction.

3. The tire according to claim 2, wherein the retaining portion is formed from the same type of resin material as the resin material forming the tire frame member.

4. The tire as described in claim 1, further comprising: gate marks indicating a plurality of gate positions arranged along the tire circumferential direction on the bead portion side or the crown portion side of the tire frame member which is injection molded; and the RFID tag is arranged between the plurality of gate positions in the tire circumferential direction.

5. A tire as described in claim 1, wherein the RFID tag has a resin case, and an RFID chip and an antenna housed in the case, and the side portion is molded so as to be integrated with the case.

6. The tire according to claim 5, wherein the case is formed from the same type of resin material as the resin material forming the tire frame member.

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