tire

Abstract

To provide a tire which allows for easily grasping a position of a communication device provided in the tire.SOLUTION: A tire 1 with a communication device 20 comprises a display part 10 indicating a position of the communication devices 20, Therein, when in a state that the tire 1 is assembled to an applied rim and charged with a specified internal pressure and applied with a specified load, a separation point S of the tire 1 is defined on an outermost end part in a tire radial direction on an external surface contacting the applied rim, of the tire 1, and when in a reference state that the tire is assembled to the applied rim and charged with the specified internal pressure but applied with no load, a separation-point distance SD Is defined to be a length extending along the tire radial direction from an inner end part in the tire radial direction of the tire 1 to the separation point, the display part 10 is provided, on an external surface of the tire 1, within a range that a distance D along the tire radial direction from the inner end part in the tire radial direction satisfies a formula of D≤1.2×SD, in the reference state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to tires. [Background technology]

[0002] There is known a technology for making it easier to grasp the location of a communication device such as an RF tag attached to a tire. For example, Patent Document 1 discloses a tire in which an identification mark indicating the location of a transponder placed in the tire is provided on the outer surface of the tire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-56443 Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the position on the outer surface of the tire of the display unit that indicates the location of the communication device, it may become difficult to see as the tire is used due to dirt or wear, etc. Therefore, there is still a need for a device that makes it easier to determine the location of the communication device installed on the tire.

[0005] In view of the above circumstances, an object of the present disclosure is to provide a tire that makes it easy to grasp the position of a communication device provided in the tire. [Means for solving the problem]

[0006] The tire according to the present disclosure is a tire equipped with a communication device, and when the tire is mounted on an applicable rim, inflated to a specified internal pressure, and subjected to a specified load, the tire's radially outermost end of the outer surface of the tire that is in contact with the applicable rim is defined as the tire's separation point, and when the tire is mounted on the applicable rim, inflated to the specified internal pressure, and subjected to a specified load, the length along the tire radial direction from the tire's radially inner end to the separation point is defined as a separation point distance SD in the reference state where the tire is mounted on the applicable rim, inflated to the specified internal pressure, and unloaded, the tire is equipped with a display unit that indicates the position of the communication device on the outer surface of the tire in a range where a distance D from the tire radially inner end along the tire radial direction in the reference state satisfies D≦1.2×SD. With the tire according to the present disclosure, when the tire is mounted on an applicable rim, the display unit is less likely to become dirty or wear out, making it easier to determine the position of the communication device provided in the tire.

[0007] In the tire according to the present disclosure, it is preferable that at least a portion of the marking portion is located on the outer surface of the tire in a range where the distance D from the radially inner end of the tire along the tire radial direction satisfies SD≦D≦1.2×SD in the reference state. With a tire having such a configuration, the marking portion can be seen from outside the tire even when the tire is mounted on an applicable rim.

[0008] In the tire according to the present disclosure, the display portion is preferably provided so that the communication device is included in an area where the display portion extends in the tire circumferential direction. With a tire having such a configuration, it is easy to grasp the circumferential position of the communication device provided in the tire.

[0009] In the tire according to the present disclosure, the display portion preferably extends over an area of ​​1 / 8 to 1 / 4 of the entire circumference of the tire. With a tire having such a configuration, the display portion is easy to see, and the circumferential position of the communication device provided in the tire can be easily ascertained.

[0010] In the tire according to the present disclosure, the marking portion preferably extends over an area of ​​at least half of the circumference of the tire. With a tire having such a configuration, the marking portion is easily visible. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide a tire-wheel assembly and a wheel that make it easier to grasp the position of a communication device provided in a tire. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a side view of a tire according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view of the tire shown in FIG. 1 in the tire width direction. [Figure 3] 3 is a cross-sectional view of a bead portion of the tire shown in FIG. 2 in the tire width direction. [Figure 4] FIG. 4 is a side view of a modified example of the tire 1 shown in FIG. [Figure 5] FIG. 5 is a side view of another modified example of the tire 1 shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] A tire according to an embodiment of the present disclosure will be described below with reference to the drawings. Common components and parts in each drawing are designated by the same reference numerals. However, please note that the drawings are schematic, and the ratios of dimensions may differ from those in reality.

[0014] In this disclosure, the term "tire width direction" refers to a direction parallel to the tire's rotational axis, the term "tire radial direction" refers to a direction perpendicular to the tire's rotational axis, and the term "tire circumferential direction" refers to the direction in which the tire rotates around the tire's rotational axis.

[0015] In this disclosure, the side closer to the tire rotation axis along the tire radial direction is referred to as the "tire radial inner side," and the side farther from the tire rotation axis along the tire radial direction is referred to as the "tire radial outer side." On the other hand, the side closer to the tire equatorial plane CL along the tire width direction is referred to as the "tire width inner side," and the side farther from the tire equatorial plane CL along the tire width direction is referred to as the "tire width outer side."

[0016] In this disclosure, unless otherwise specified, the positional relationship of each element of a tire is measured under a reference condition. The "reference condition" refers to a state in which a tire is mounted on a wheel rim, which is an applicable rim, inflated to a specified internal pressure, and no load is applied. In the following, the tire will be described as having an internal cavity filled with air and being mounted on a construction vehicle such as a wheel loader or dump truck. However, the internal cavity of the tire may be filled with a fluid other than air, and the tire may be mounted on a vehicle other than a construction vehicle.

[0017] In this disclosure, "applicable rim" refers to the standard rim (Measuring Rim in the ETRTO Standards Manual, Design Rim in the TRA Year Book) for the applicable size, which is an industry standard valid in the region where the tire is produced and used, and is described in the JATMA Year Book of the Japan Automobile Tire Manufacturers Association (JATMA) in Japan, the Standards Manual of the European Tire and Rim Technical Organization (ETRTO) in Europe, or the Year Book of the Tire and Rim Association, Inc. (TRA) in the United States, or will be described in the future. For sizes not described in the above industry standards, this refers to a rim with a width corresponding to the tire bead width. "Applicable rim" includes not only current sizes but also sizes that may be included in the above industry standards in the future. An example of a "size to be described in the future" is the size described as "FUTURE DEVELOPMENTS" in the 2013 edition of the ETRTO Standards Manual.

[0018] In this disclosure, "specified internal pressure" refers to the air pressure (maximum air pressure) corresponding to the maximum load capacity of a single wheel for the applicable size and ply rating as set forth in the above-mentioned JATMA YEAR BOOK and other industry standards. For sizes not set forth in the above-mentioned industry standards, "specified internal pressure" refers to the air pressure (maximum air pressure) corresponding to the maximum load capacity specified for each vehicle on which the tire is to be mounted. Furthermore, in this disclosure, "specified load" refers to the load corresponding to the maximum load capacity of a single wheel for the applicable size and ply rating as set forth in the above-mentioned industry standards. For sizes not set forth in the above-mentioned industry standards, "specified load" refers to the load corresponding to the maximum load capacity specified for each vehicle on which the tire is to be mounted.

[0019] First, a schematic configuration of a tire 1 according to an embodiment of the present disclosure will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a side view of the tire 1 according to an embodiment of the present disclosure as seen in the tire width direction. FIG. 2 is a tire widthwise cross-sectional view of the tire 1 cut along the tire width direction. The tire 1 is provided with a communication device 20. For example, the communication device 20 is embedded inside the tire 1 or attached to the inner surface of the tire 1. The outer surface of the tire 1 is provided with a display unit 10 that indicates the position of the communication device 20. Specifically, the display unit 10 is provided on the outer surface of the tire 1 in a range where a distance D from the tire radially inner end of the tire 1 along the tire radial direction satisfies D≦1.2×SD when the tire 1 is mounted on a wheel rim R that is an applicable rim, inflated to a specified internal pressure, and in a no-load reference state. Here, the separation point S is the radially outermost end of the outer surface of the tire 1 that is in contact with the rim R when the tire 1 is mounted on the rim R of a wheel, which is the applicable rim, inflated to a specified internal pressure, and subjected to a specified load. As a result, when the tire 1 is mounted on the rim R, which is the applicable rim, at least a portion of the display unit 10 is located on the outer surface of the tire 1 in a position that is covered by the rim R, or in a position that is not covered by the rim R but is near the separation point S of the tire 1, so that the display unit 10 is less likely to become dirty or worn. This makes it easier to determine the position of the communication device 20 provided on the tire 1.

[0020] An example of the configuration of the tire 1 will be described in detail below with reference to FIG.

[0021] As shown in Fig. 2, the tire 1 has a pair of bead portions 2, a pair of sidewall portions 3, and a tread portion 4. The sidewall portions 3 extend between the tread portion 4 and the bead portions 2. In Fig. 2, the tire 1 is shown in a standard state in which the tire 1 is mounted on a rim R of a wheel, which is an applicable rim, inflated to a specified internal pressure, and no load is applied. Specifically, the bead portions 2 of the tire 1 are seated on bead seats R1 of the rim R and supported from the sides by the rim flange R2.

[0022] In this embodiment, the tire 1 will be described as having a symmetrical configuration with respect to the equatorial plane CL of the tire. However, the tire 1 may have an asymmetrical configuration with respect to the equatorial plane CL of the tire.

[0023] The tire 1 includes a pair of bead cores 5 arranged in the bead portion 2, a carcass 6 consisting of one or more plies extending toroidally between the pair of bead cores 5, and a belt 7 consisting of one or more belt layers arranged radially outward of the crown region of the carcass 6.

[0024] The bead core 5 is made of an annular cable bead extending in the tire circumferential direction. The cable bead is made of, for example, a high-carbon steel wire coated with rubber. The cross-sectional shape perpendicular to the extension direction of the bead core 5 (cross-sectional shape in the tire width direction) is circular. However, the cross-sectional shape of the bead core 5 in the tire width direction may be any shape, such as a hexagon. A bead filler 8 made of a rubber material or the like is provided on the outer side of the bead core 5 in the tire radial direction. In this embodiment, the bead core 5 and the bead filler 8 are surrounded by the carcass 6 in the cross-section in the tire width direction. However, the tire 1 may be configured without the bead filler 8.

[0025] The carcass 6 is made up of one or more plies (one ply in this embodiment) extending toroidally between a pair of bead cores 5. The ply is made up of a plurality of cords coated with rubber. The cords constituting the ply are, for example, steel cords, but may also be organic fiber cords made of rayon or PET (polyethylene terephthalate). In this embodiment, the cords are arranged so as to extend in the tire width direction in the tread portion 4. That is, the carcass 6 has a radial structure. However, the carcass 6 is not limited to a radial structure and may have any structure, such as a bias structure.

[0026] The carcass 6 is anchored to a pair of bead cores 5. Specifically, the carcass 6 includes a carcass main body 6A extending toroidally between the pair of bead cores 5, and a carcass folded-up portion 6B extending from the carcass main body 6A and folded back around the bead cores 5 from the inner side in the tire width direction to the outer side in the tire width direction. In this embodiment, the carcass folded-up portion 6B terminates near the position of the maximum tire width in a reference state. Here, the "position of the maximum tire width" refers to the position in the tire radial direction where the length of the tire 1 in the tire width direction cross section is longest. However, the carcass 6 may have a structure that does not include the carcass folded-up portion 6B or a structure in which the carcass folded-up portion 6B is wrapped around the bead cores 5.

[0027] The belt 7 is disposed on the tire radially outer side of the crown region of the carcass 6. The belt 7 is composed of one or more belt layers (three layers in this embodiment) laminated in the tire radial direction at the equatorial plane CL of the tire. The belt layers include belt cords such as steel cords. The belt 7 is provided in the tread portion 4 so as to cover the carcass 6 from the tire radially outer side.

[0028] The tire 1 has an inner liner 9. The inner liner 9 forms the tire inner wall surface of the tire 1. The inner liner 9 may be composed of a plurality of inner liner layers laminated in the tire radial direction at the equatorial plane CL of the tire. In this embodiment, the inner liner 9 is composed of, for example, a butyl-based rubber having low air permeability. However, the inner liner 9 is not limited to a butyl-based rubber, and may be composed of another rubber composition, resin, or elastomer.

[0029] The tire 1 includes a communication device 20. In this embodiment, the communication device 20 is embedded in the sidewall portion 3 of the tire 1 so as to be located on the outer side of the carcass 6 in the tire width direction. However, the communication device 20 may be provided at any position in the tire 1. The communication device 20 may be embedded at another position inside the tire 1, or may be attached to the inner surface of the tire 1. In the present disclosure, the communication device 20 being embedded in the tire includes the communication device 20 being completely embedded in the tire 1 as well as being partially embedded.

[0030] The communication device 20 can perform wireless communication. The communication device 20 is, for example, an RF (Radio Frequency) tag. The RF tag is also called an RFID (Radio Frequency Identification) tag. The communication device 20 includes an IC (Integrated Circuit) chip 20A constituting a control unit and a storage unit, and one or more antennas 20B connected to the IC chip 20A. The IC chip 20A may store any information related to the tire 1, such as the tire 1's identification information and manufacturing date. In this embodiment, as shown in FIG. 1 , the communication device 20 has two antennas 20B extending linearly, wavy, or spirally extending from the IC chip 20A in opposite directions, and the entire device has a longitudinal shape. However, the configuration of the communication device 20 is not limited to the illustrated example. For example, the communication device 20 may have one or three or more antennas 20B extending linearly, wavy, or spirally from the IC chip 20A. Alternatively, the communication device 20 may be configured such that one antenna 20B extending from the IC chip 20A is arranged in a spiral shape so as to surround the periphery of the IC chip 20A.

[0031] The IC chip 20A may be operated by an induced electromotive force generated by electromagnetic waves received by one or more antennas 20B. That is, the communication device 20 may be a passive communication device. Alternatively, the communication device 20 may further include a battery and be capable of communicating by generating electromagnetic waves using its own power. That is, the communication device 20 may be an active communication device.

[0032] Next, the separation point S of the tire 1 will be described with reference to FIG. 3. FIG. 3 is a tire widthwise cross-sectional view of the bead portion 2 of the tire 1 shown in FIG. 2. In FIG. 3, the tire 1 is shown by a solid line in a state in which the tire 1 is mounted on the rim R of a wheel, which is an applicable rim, inflated to a specified internal pressure, and subjected to a specified load, while the tire 1 in a reference state is shown by a dashed line. As shown in FIG. 3, the rim flange R2 rises in the tire radial direction from the outer end of the bead seat R1 in the tire widthwise direction, curves in a direction that convexly extends outward in the tire radial direction, and extends outward in the tire widthwise direction. However, the rim flange R2 may have any shape as long as it extends at least outward in the tire width direction and radially outward from the bead seat R1.

[0033] The separation point S of the tire 1 is the radially outermost end of the outer surface of the tire 1 that is in contact with the rim R (in this embodiment, the rim flange R2) when the tire 1 is mounted on the rim R of a wheel, which is an applicable rim, inflated to a specified internal pressure, and subjected to a specified load. Therefore, when the tire 1 is mounted on the rim R, there is a high possibility that the range of the outer surface of the tire 1 that is radially outer than the separation point S can be seen from outside the tire 1.

[0034] Referring again to FIG. 1, the tire 1 is provided with a display unit 10 on the outer surface of the tire 1 that indicates the position of the communication device 20 .

[0035] The display unit 10 may be provided on the outer surface of the tire 1 by any method. For example, the display unit 10 may be painted on the outer surface of the tire 1. Alternatively, for example, the display unit 10 may be formed by protruding from the outer surface of the tire 1. Alternatively, the display unit 10 may be attached to the outer surface of the tire 1 with an adhesive or the like. By providing the display unit 10 three-dimensionally on the outer surface of the tire 1, even if the display unit 10 becomes dirty with mud or the like, it can be seen from outside the tire 1. From this perspective, it is preferable that the display unit 10 be formed by a protruding portion to which mud or the like is less likely to adhere.

[0036] When the tire 1 is mounted on the rim R of a wheel, which is an applicable rim, inflated to a specified internal pressure, and in a reference state where no load is applied, the tire 1 is mounted on the rim R of the wheel, and the tire is in a standard state with no load applied. The distance D from the tire radially inner end to the tire radially inner end in the reference state satisfies D≦1.2×SD. This allows at least a portion of the display unit 10 to be located on the outer surface of the tire 1 at a position covered by the rim R, or near the separation point S of the tire 1 even if it is not covered by the rim R. This makes it difficult for the display unit 10 to become dirty or worn. This makes it easier to determine the position of the communication device 20 provided on the tire 1. In the present disclosure, "the display unit 10 is provided on the outer surface of the tire 1 in a range where the distance D from the tire radially inner end along the tire radial direction in a reference state satisfies D≦1.2×SD" means that at least a portion of the display unit 10 is located within a range of 1.2×SD from the tire radially inner end in the tire radial direction. Therefore, this description includes not only a case where the entire display unit 10 is located within a range of 1.2×SD from the tire radially inner end, but also a case where at least a portion of the tire radially outer side of the display unit 10 is located beyond the range of 1.2×SD from the tire radially inner end, as shown in Fig. 2.

[0037] Preferably, at least a portion of the display unit 10 is located on the outer surface of the tire 1 in a range where the distance D from the tire radially inner end along the tire radial direction in a reference state satisfies SD≦D≦1.2×SD. This allows at least a portion of the display unit 10 to be visible from outside the tire 1 even when a specified load is applied to the tire 1.

[0038] The display unit 10 may have any shape. In this embodiment, as shown in FIG. 1 , the display unit 10 has an elongated shape and is provided along the tire circumferential direction. Specifically, the display unit 10 is provided in the tire circumferential direction so that the communication device 20 is included in the range to which the display unit 10 extends. This makes it easier to grasp the tire circumferential position of the communication device 20 provided on the tire 1. In the example shown in FIG. 1 , the display unit 10 does not cover the outer surface of the tire 1 located on the outer side of the communication device 20 in the tire width direction. However, the display unit 10 may be provided so as to cover the outer surface of the tire 1 located on the outer side of the communication device 20 in the tire width direction. This makes it even easier to grasp the tire radial position of the communication device 20 provided on the tire 1.

[0039] The length of the display unit 10 in the tire circumferential direction may be any length. Increasing the length of the display unit 10 in the tire circumferential direction makes the display unit 10 easier to see even when mud or the like is attached to a portion of the display unit 10. On the other hand, shortening the length of the display unit 10 in the tire circumferential direction narrows the range of the tire circumferential position of the communication device 20 indicated by the display unit 10, allowing the position of the communication device 20 provided on the tire 1 to be more accurately determined. Preferably, the display unit 10 extends over a range of 1 / 8 to 1 / 4 of the entire circumference of the tire 1. This makes the display unit 10 easier to see and makes it easier to determine the tire circumferential position of the communication device 20 provided on the tire 1.

[0040] The color of the display unit 10 is different from the color of the surface of the tire 1 on which the display unit 10 is provided. This makes the display unit 10 easier to see on the tire 1. Preferably, the color of the display unit 10 is a complementary color to the color of the surface of the tire 1 on which the display unit 10 is provided. This makes the display unit 10 even easier to see on the tire 1.

[0041] The color of the display unit 10 may be changed depending on the position of the communication device 20 on the tire 1. For example, the display unit 10 may be colored differently depending on whether the communication device 20 is provided on the same side as the display unit 10 or on a different side from the display unit 10, with respect to the equatorial plane CL of the tire 1. This allows the display unit 10 to indicate the position of the communication device 20 in the tire width direction in addition to the position in the tire circumferential direction.

[0042] The display unit 10 may include a light-emitting region. The light-emitting region is a region that can emit light to the outside. When the display unit 10 includes a light-emitting region, the display unit 10 can be easily viewed from outside the tire 1 in a dark environment, such as at night or in a dark place. This makes it easier to identify the location of the communication device 30 in a dark environment.

[0043] The light-emitting region is not particularly limited as long as it is a region that can emit light to the outside. The light-emitting region may be made of, for example, a phosphorescent paint containing a phosphorescent material. Examples of phosphorescent materials include those having the following composition formulas: SrAl2O4:Eu,Dy, Sr4Al14O25:Eu,Dy, SrAl2O4:Eu,Dy+Sr4Al14O25:Eu,Dy, Sr4Al14O25:Eu,Dy+CaAl2O4:Eu,Nd, CaAl2O4:Eu,Nd, ZnS:Cu,Mn,Co, ZnS:Cu, etc. Alternatively, the light-emitting region may be made of a fluorescent paint containing a fluorescent material that emits light when irradiated with ultraviolet light such as a black light.

[0044] A modified example of the tire 1 will be described below with reference to Fig. 4. Fig. 4 is a side view of a modified example of the tire 1 shown in Fig. 1.

[0045] In a modified example of the tire 1, the display unit 10 is used to indicate the position of the communication device 20 in the tire width direction. Specifically, the display unit 10 is provided on the outer surface of the tire 1 on the same side as the communication device 20, with the equatorial plane CL of the tire 1 as the center. This allows the user to know from the display unit 10 that the communication device 20 is provided on the side where the display unit 10 is provided.

[0046] In this modification, the display unit 10 also has an elongated shape and is provided along the tire circumferential direction. The length of the display unit 10 in the tire circumferential direction may be any length. Preferably, the display unit 10 extends over at least half of the entire circumference of the tire 1. This makes the display unit 10 easy to see even when mud or the like adheres to part of the display unit 10.

[0047] The display unit 10 is provided in the tire circumferential direction so that the communication device 20 is included in the range over which the display unit 10 extends. This makes it easier to grasp the tire circumferential position of the communication device 20 provided on the tire 1 in addition to the tire width direction position. However, as shown in FIG. 5 , the display unit 10 may be provided so that it extends over an area of ​​more than half of the entire circumference of the tire 1 in the tire circumferential direction and does not include the communication device 20 in the range over which the display unit 10 extends. This makes it clear that the communication device 20 is present in an area over which the display unit 10 is not provided in the tire circumferential direction, and the long length of the display unit 10 makes the display unit easier to see.

[0048] As described above, the tire 1 according to one embodiment of the present disclosure is a tire 1 equipped with a communication device 20, and is equipped with a display unit 10 that indicates the position of the communication device 20 on the outer surface of the tire 1 in a range where the distance D from the radially inner end of the tire 1 along the tire radial direction in the reference state satisfies D≦1.2×SD, where the tire 1 is mounted on an applicable rim (rim R), inflated to a specified internal pressure, and under a specified load, and the separation point S of the tire 1 is the radially outermost end of the outer surface of the tire 1 that is in contact with the applicable rim, and the separation point distance SD is the length along the tire radial direction from the radially inner end of the tire 1 to the separation point S in the reference state where the tire is mounted on the applicable rim, inflated to a specified internal pressure, and under no load.

[0049] The tire 1 having such a configuration makes it easier to grasp the position of the communication device 20 provided in the tire 1. In particular, when the tire 1 is mounted on the applicable rim R, at least a portion of the display unit 10 is disposed in a position on the outer surface of the tire 1 that is covered by the rim R, or in a position that is not covered by the rim R but is near the separation point S of the tire 1, so the display unit 10 is less likely to become dirty or wear out.

[0050] Although the present disclosure has been described based on the drawings and embodiments, it should be noted that those skilled in the art can make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are within the scope of the present disclosure. For example, the configurations or functions included in each embodiment can be rearranged so as not to cause logical inconsistencies. Furthermore, the configurations or functions included in each embodiment can be used in combination with other embodiments, and multiple configurations or functions can be combined, divided, or partially omitted.

[0051] For example, in the above-described embodiment, the tire 1 is described as being provided with one communication device 20. However, the tire 1 may be provided with a plurality of communication devices 20. In such a case, a plurality of display units 10 may be provided on the surface of the tire 1, each display unit 10 indicating the circumferential position of each communication device 20. [Industrial Applicability]

[0052] The present disclosure relates to tires. [Explanation of symbols]

[0053] 1: tire, 2: bead portion, 3: sidewall portion, 4: tread portion, 5: bead core, 6: carcass, 6A: carcass main body portion, 6B: carcass folded portion, 7: belt, 8: bead filler, 9: inner liner, 10: display portion, 20: communication device, 20A: IC chip, 20B: antenna, CL: tire equatorial plane, R: rim (applicable rim), R1: bead seat, R2: rim flange, S: separation point, SD: separation point distance

Claims

1. A tire equipped with a communication device, The tire is mounted on an applicable rim, inflated to a specified internal pressure, and subjected to a specified load. The tire's radially outermost end of the outer surface of the tire that is in contact with the applicable rim is defined as the tire's separation point. When the tire is mounted on the applicable rim, inflated to the specified internal pressure, and in a reference state with no load, the length along the tire radial direction from the tire radially inner end to the separation point is defined as a separation point distance SD, a display unit that indicates a position of the communication device on the outer surface of the tire in a range where a distance D from the tire radially inner end along the tire radial direction in the reference state satisfies D≦1.2×SD; the display unit is provided so that the communication device is included in an extending range of the display unit in the tire circumferential direction, The tire, wherein the marking portion covers an area of ​​1 / 8 to 1 / 4 of the entire circumference of the tire.

2. A tire equipped with a communication device, The tire is mounted on an applicable rim, inflated to a specified internal pressure, and subjected to a specified load. The tire's radially outermost end of the outer surface of the tire that is in contact with the applicable rim is defined as the tire's separation point. When the tire is mounted on the applicable rim, inflated to the specified internal pressure, and in a reference state with no load, the length along the tire radial direction from the tire radially inner end to the separation point is defined as a separation point distance SD, a display unit that indicates a position of the communication device on the outer surface of the tire in a range where a distance D from the tire radially inner end along the tire radial direction in the reference state satisfies D≦1.2×SD; The marking portion extends over half or more of the circumference of the tire.

3. 3. The tire according to claim 1, wherein at least a portion of the marking portion is located on the outer surface of the tire in a range where a distance D from the tire radially inner end along the tire radial direction in the reference state satisfies SD≦D≦1.2×SD.

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