TIRES

Abstract

Tire (1) comprising: tire body elements comprising bead cores (21), a bead filler (22), an inner liner (29), a sidewall rubber (30) and a cushion rubber (34, 38); and an electronic unit (40) provided at a connecting surface of the tire body elements, wherein the electronic unit (40) is an RFID transponder and is arranged between the tire body elements; and a carcass ply (23) extending from one bead core (21) to another bead core (21) and comprising a rubber-coated reinforcing cord or belt (26) provided on an outer side of the carcass ply (23) in a radial direction of the tire, wherein the cushioning rubber (34, 38) comprises a cushion (34) and a side cushion (38), wherein the pad (34) is arranged on an outer side in the radial direction of the tire of a folded-over end of the carcass ply (23), wherein the electronic unit (40) is arranged between the carcass layer (23) and the pad (34) such that the electronic unit (40) is in contact with an outer side of the bead filler (22) in the radial direction of the tire, wherein the bead filler (22) comprises a first bead filler (221) which surrounds the bead core (21) and a second bead filler (222) which is arranged on an outer side of the first bead filler (221) in the radial direction of the tire (1), and wherein the pad (34) is made of rubber with a higher modulus than the modulus of the second bead filler (222), wherein the side wall rubber (30) is specified with a module of 0.4 to 0.7 times the module of the side padding (38), wherein the cushion (34) is formed by a first cushion (35) and a second cushion (36), wherein the electronic unit (40) is in contact with the second cushion (36), and the electronic unit (40) is held on the carcass layer (23).

Description

BACKGROUND OF THE INVENTION Area of ​​the invention

[0001] The present invention relates to a tire in which an electronic unit is embedded. Related technology

[0002] Traditionally, tires are known to have an electrical component, such as an RFID chip, embedded in the rubber structure. With such tires, an RFID transponder embedded in the tire and an external reader that performs communication enable manufacturing control, usage history management, etc. Patent specification 1: Unexamined Japanese patent application, publication JP 2016037236 A Patent specification 2: Unexamined Japanese patent application, publication JP 2016049920 A

[0003] FR 3 059 603 A1 and US 2020 / 0 079 159 A1 describe a tire carcass equipped with a high-frequency transponder and comprising a crown, two sidewalls, and two beads, each bead comprising at least one annular bead wire rotating about a reference axis, and at least one annular carcass ply anchored coaxially to the reference axis in the beads, dividing the tire carcass into two zones, inside and outside the carcass ply. The high-frequency transponder comprises at least one electronic chip and a radiating radio antenna and is arranged radially outside the bead wire, characterized in that the high-frequency transponder comprises a primary antenna electrically connected to the electronic chip, that the primary antenna is electromagnetically coupled to the radiating antenna, and that the radiating antenna is formed by a helical spring defining a first longitudinal axis.

[0004] EP 2 524 818 A2 describes a pneumatic tire and trailer assembly. The assembly comprises a tire carcass formed by a tubular tire construction, wherein the tire carcass includes at least one radially inner ply component extending around an annular bead element to a ply turning section, the turning section extending radially outward from the bead element to a turning end. The tire carcass further comprises a barrier layer component positioned axially inward from and adjacent to the ply component, the barrier layer component not extending around the bead element.

[0005] WO 2018 / 104623 A1 and US 2019 / 0322142 A1 describe a tire suitable for roadside assistance, comprising a bezel, two sidewalls, and two beads, a carcass reinforcement with at least one carcass ply anchored in each bead, and a sidewall insert arranged axially inward with respect to at least the carcass ply. The tire is equipped with an electronic device comprising at least one radio frequency transponder. SUMMARY OF THE INVENTION

[0006] In this respect, in the technology disclosed in Patent 1, the radio transponder is arranged between a stiffener and a sidewall rubber, and the radio transponder does not come into contact with fiber elements such as the carcass ply. Accordingly, the radio transponder moves considerably when the tire deforms, and there are concerns regarding the potential for compromising the protection of the radio transponder. Furthermore, in connection with the technology disclosed in Patent 2, a configuration is shown in which the radio transponder is arranged between a carcass ply consisting of fiber layers and a cord reinforcement ply.In this way, if the radio transponder is completely sandwiched between two fiber layers, the insertion process creates mutual stress between the fiber layers and the transponder, and this stress could potentially affect both. Furthermore, if the radio transponder is simply sandwiched between two rubber elements, it is difficult to establish a reference point for its position, and the electronic unit's position could deviate. This could result in the electronic unit being placed in an unfavorable position, and its functionality could be compromised.

[0007] The present invention was developed taking into account the problem mentioned above, and one of its objectives is to provide a tire that is suitable for efficiently preventing movement of an electronic unit in the event of deformation of the tire and for adequately protecting the electronic unit.

[0008] This problem is solved by a tire having the features disclosed in independent claim 1. Further embodiments are defined in the dependent claims.

[0009] According to the present invention, it is possible to provide a tire that is suitable for efficiently preventing movement of an electronic unit in the event of deformation of the tire and for adequately protecting the electronic unit. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a view showing a half-section of a tire according to a first embodiment for a better understanding of the present invention in one direction of the width of the tire; Fig. Figure 2 is a partially enlarged sectional view of a tire according to the first embodiment of the present invention; Fig. 3A is a view showing an RFID transponder protected by a protective element in a tire according to the first embodiment of the present invention; Fig. 3B is a view showing a cross-section along line bb in Fig. 3A shows; Fig. 3C is a view showing a cross-section along line cc in Fig. 3A shows; Fig. Figure 4 is a partially enlarged sectional view of a tire according to a second embodiment for a better understanding of the present invention; Fig. Figure 5A is a view taken when considering a circumferential section of the protective element from an outer side in the direction of the width of the tire during a process of manufacturing a tire according to the second embodiment of the present invention; Fig. Figure 5B is a view when considering a circumferential section of the protective element from an outer side in the direction of the width of the tire in a modified example of a process of manufacturing the tire according to the second embodiment of the present invention; Fig. Figure 5C is a view showing an annular rubber plate as a modified example of the protective element in the tire according to the second embodiment of the present invention; Fig. Figure 6 is a partially enlarged sectional view of a tire according to a modified example of the second embodiment of the present invention; Fig. 7 is a partially enlarged sectional view of a tire according to a third embodiment of the present invention; Fig. Figure 8 is a partially enlarged sectional view of a tire according to a fourth embodiment for a better understanding of the present invention; Fig. 9 is a partially enlarged sectional view of a tire according to a fifth embodiment for a better understanding of the present invention; Fig. 10 is a partially enlarged sectional view of a tire according to a sixth embodiment for better understanding of the present invention; Fig. 11 is a view showing a cross-section before the RFID transponder is enclosed by rubber sheets in a case where no rubber is filled into a spring antenna; Fig. Figure 12 is a view showing a cross-section after the RFID transponder has been enclosed by rubber sheets in a case where no rubber is filled into a spring antenna; Fig. 13 is a view showing a cross-section after the RFID transponder has been enclosed by rubber sheets in a case where no rubber is filled into a spring antenna; Fig. Figure 14 shows an RFID transponder before the filling of rubber into a spring antenna in a tire according to a seventh embodiment of the present invention; Fig. Figure 15 shows an RFID transponder after filling a spring antenna with rubber in the tire according to the seventh embodiment of the present invention; Fig. Figure 16 shows a view of the RFID transponder before it is enclosed by rubber plates in the tire according to the seventh embodiment of the present invention; and Fig. Figure 17 is a view showing the RFID transponder enclosed between rubber plates in the tire according to the seventh embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION<Erste Ausführungsform>

[0010] A first embodiment is explained below with reference to the drawings. Fig. Figure 1 is a view showing a half-section of a tire 1 according to the present embodiment in one direction of the tire's width. The basic structure of the tire is left / right symmetrical in the cross-section in the direction of the tire's width; therefore, a sectional view of the right half is shown here. In the drawings, the reference numeral S1 denotes the equatorial plane of the tire. The equatorial plane S1 of the tire is a plane perpendicular to the tire's axis of rotation and is located in the middle of the direction of the tire's width. Here, the direction of the tire's width is a direction parallel to the tire's axis of rotation and is located on the paper plane of the sectional view in Fig. 1. The direction to the right and left. In Fig. In Figure 1, it is represented as the width direction X of the tire. Then, the inner side in the direction of the tire's width is a direction of approximation to the equatorial plane S1 of the tire, and in Fig. 1. The left side of the paper plane. The outer side in the direction of the width of the tire is a direction of distance from the equatorial plane S1 of the tire and in Fig. 1. The right side of the plane of the paper. Furthermore, the radial direction of the tire is a direction perpendicular to the axis of rotation of the tire and on the plane of the paper. Fig. 1. The vertical direction. In Fig. In Figure 1, it is represented as the radial direction Y of the tire. Then, the outer side in the radial direction of the tire is a direction of distance from the axis of rotation of the tire, and in Fig. 1. The upper side of the paper plane. The inner side in the radial direction of the tire is a direction of approach to the tire's axis of rotation and in Fig. 1. The bottom side of the paper. The same applies to the Fig. 2, 4 and 6 to 10.

[0011] The tire 1, for example, is a tire for trucks and buses and comprises two beads 11 which are provided on both sides in the direction of the width of the tire, a tread 12 which forms a contact surface with the road, and two sidewalls 13 which extend between the two beads and the tread 12.

[0012] The bead 11 comprises an annular bead core 21, formed by multiple windings of bead wires made of a rubber-coated metal, and a tapered bead filler 22 extending to the outer side of the bead core 21 in the radial direction of the tire. The bead filler 22 is formed by a first bead filler 221, which encloses the outer circumference of the bead core 21, and a second bead filler 222, which is located on the outer side of the first bead filler 221 in the radial direction of the tire. The second bead filler 222 is made of rubber with a higher modulus than an inner liner 29 and a sidewall rubber 30, which are described later. The first bead filler 221 is made of rubber with an even higher modulus than the second bead filler 222.It should be noted that the first bead filler 221 may have a shape that does not enclose the outer circumference of the bead core 21, provided that at least part of it is located on the outer side of the bead core 21 in the radial direction of the tire. Furthermore, the bead filler 22 may be made of a single type of rubber. In other words, it need not necessarily be divided into a first bead filler 221 and a second bead filler 222. The bead core 21 is an element that serves to fasten an air-filled tire to the rim of a wheel (not shown). The bead filler 22 is an element designed to increase the stiffness of the circumferential section of the bead and to ensure high steering response and stability.

[0013] A carcass ply 23, which forms a layer serving as the skeleton of the tire, is embedded in the interior of the tire 1. The carcass ply 23 extends from one bead core to the other. In other words, it is embedded in the tire 1 between the two bead cores 21 in a shape that passes through the two sidewalls 13 and the tread 12. As in Fig. As shown in Figure 1, the carcass ply 23 comprises a ply body 24 extending from one bead core to the other and between the tread 12 and the bead 11, and a ply bending section 25 folded around the bead core 21. A folded end 25A of the ply bending section 25 is positioned further on an inner side (radially) than an outer end 22A of the bead filler 22 (radially). The carcass ply 23 is formed by several ply cords extending in one direction across the width of the tire. Furthermore, several ply cords are arranged side by side in one circumferential direction of the tire. This ply cord is formed as a reinforcing cord of a metal steel cord or an insulated organic fiber cord such as polyester or polyamide, or the like, and is covered with rubber.

[0014] In the tread 12, several layers of steel belts 26 are provided on the outer side of the carcass ply 23 in the radial direction of the tire. The steel belt 26 is a belt formed from several rubber-coated steel cords. The provision of the steel belts 26 ensures the rigidity of the tire and improves the contact between the road surface and the tread 12. Although the present embodiment provides four layers of steel belts 26, the number of layered steel belts 26 is not limited to this.

[0015] The tread rubber 28 is provided on the outer side of the steel belt 26 in the radial direction of the tire. A tread profile (not shown) is provided on the outer surface of the tread rubber 28, and this outer surface serves as the contact surface that is in contact with the road surface.

[0016] Near the outer side of the tread 12 in the direction of the tire's width, i.e., in an end region of the steel belt 26 and the tread rubber 28 in the direction of the tire's width, a sidewall pad 38 is provided as padding in an area between the carcass ply 23 and the steel belts 26 / tread rubber 28. This sidewall pad 38 extends to a region of the outer side of the sidewall 13 in the radial direction of the tire, and part of it forms a connecting surface to the sidewall rubber 30 described later. In other words, in the region of the outer side of the sidewall 13 in the radial direction of the tire, part of the sidewall pad 38 is located on the inner side of the sidewall rubber 30 in the direction of the tire's width.In other words, on an extended part of the sidewall pad 37, from the side of the inner cavity of the tire to the side of the outer surface of the tire, the extended part of the sidewall pad 38 and the sidewall rubber 30 are layered on the carcass ply 23 in that order. In other words, on this section of the carcass ply 23, the sidewall pad 38 and the sidewall rubber 30 are layered on top of each other. The sidewall pad 38, as a cushioning rubber, consists of a rubber element with padding and has a cushioning function between the carcass ply 23 and the steel belt 26. Since the sidewall pad 38 is made of rubber with the characteristic of low heat generation, it is also possible to effectively prevent heat generation by extending it to the sidewall 13.In this way, the sidewall pad 38 is arranged on one tire surface side of the carcass layer 23 and, in relation to the tread rubber 28 and the sidewall rubber 30, on one side of the inner cavity of the tire.

[0017] In the bead 11, the sidewall 13, and the tread 12, an inner lining 29, serving as a rubber layer forming an inner wall surface of the tire 1, is provided on the carcass layer 23 on one side of the inner cavity of the tire. The inner lining 29 is made of airtight rubber, thus preventing air from escaping from the inner cavity of the tire.

[0018] The sidewall rubber 30, which forms the outer wall surface of the tire 1, is located on the outer side of the carcass ply 23 in the direction of the tire's width. This sidewall rubber 30 is a section that flexes the most when the tire performs a cushioning function, and a fatigue-resistant, flexible rubber is typically used for this purpose.

[0019] On the radially inner side of the carcass ply 23 surrounding the bead core 21 of the bead 11, a steel bead strip 31, serving as a reinforcing ply, is provided such that it encloses at least a portion of the carcass ply 23. The steel bead strip 31 also extends to the outer side of the ply bending section 25 of the carcass ply 23 in the direction of the tire's width, and an end section 31A of this steel bead strip 31 is further arranged on the radially inner side of the tire as the folded end 25A of the carcass ply 23. This steel bead strip 31 is a metal reinforcing ply formed from metal steel cords and covered with rubber.

[0020] The rim band rubber 32 is provided on the inner side of the steel bead band 31 in the radial direction of the tire. This rim band rubber 32 is arranged along the outer surface of the tire and connected to the sidewall rubber 30. This rim band rubber 32 and the sidewall rubber 30 are rubber elements that form the outer surface of the tire.

[0021] Then, on the outer side of the end section 31A of the steel bead strip 31 in the radial direction of the tire, i.e., on the outer side of the folded part 25 of the carcass ply 23 and the bead filler 22 in the direction of the tire's width, a first pad 35 is provided. This first pad 35 is provided on the outer side of at least the folded end 25A of the carcass ply 23 in the direction of the tire's width. The outer side of the first pad 35 in the radial direction of the tire is shaped such that it tapers as it approaches the outer side in the radial direction of the tire.

[0022] Furthermore, a second pad 36 is provided such that it covers the outer side of the first pad 35 in the direction of the tire's width. More precisely, the second pad 36 is provided such that it covers the outer side in the direction of the tire's width of a portion of the steel bead band 31, the first pad 35, a portion of the second bead filler 222, and a portion of the ply body 24 of the carcass ply 23. The sidewall rubber 30 is then arranged radially along the tire on its outer side in the direction of the tire's width outside the area of ​​the second pad 36, and the rim band rubber 32 is arranged radially along the tire on its outer side in the direction of the tire's width within the area of ​​the second pad 36. In other words, the second pad 36 is located between the first pad 35, etc.and the rim tape rubber 32 and the sidewall rubber 30, which are elements that form the outer surface of the tire.

[0023] The first pad 35 and the second pad 36, as padding rubber, form the padding element 34, and this padding element 34 is made of rubber with a higher modulus than the modulus of the outer section of the bead filler 22 (second bead filler 222) in the radial direction of the tire. More precisely, the second pad 36 is made of rubber with a higher modulus than the second bead filler 222, and the first pad 35 is made of rubber with an even higher modulus than the second pad 36. The first pad 35, as the first padding rubber, and the second pad 36, as the second padding rubber, function to mitigate a sudden deformation caused by the local point of change in stiffness at the folded end 25A of the carcass ply 23 and the end section 31A of the steel bead strip 31.

[0024] The annular rubber plate 37 is arranged near the folded end 25A of the carcass ply 23, between the bead filler 22 and the cushioning element 34. The rubber plate 37 is positioned such that it covers the folded end 25A of the carcass ply 23 from its inner side (in the direction of the tire's width). The rubber plate 37 is made of rubber with a higher modulus than the second bead filler 222. Preferably, it is made of rubber with a modulus that is essentially the same as that of the first cushion 35.

[0025] In principle, stresses tend to concentrate at the folded end 25A of the carcass ply 23. However, by providing the rubber sheet 37, which serves as the aforementioned reinforced rubber sheet, it becomes possible to effectively prevent the concentration of stresses. It should be noted that the cushioning element 34, although formed by the first cushion 35 and the second cushion 36 in the present embodiment, can be formed from a single element. As mentioned above, however, by constructing the cushioning element 34 from the first cushion 35 and the second cushion 36, and furthermore by using a configuration in which the rubber sheet 37 is arranged, it is possible to prevent the concentration of stresses more effectively.

[0026] It should be noted that, in the present embodiment, the position of the radially outer end 37A of the rubber sheet 37 is located further towards the outer side of the tire than the radially outer end 22A of the bead filler 22. However, the position of the radially outer end 37A of the rubber sheet 37 can be adjusted to essentially coincide with the position of the radially outer end 22A of the bead filler 22. It should be noted that the rubber sheet 37 is preferably shaped such that it covers the folded-over end 25A of the carcass ply 23 from the side facing inwards (in the direction of the tire's width), as shown in Fig. Figure 1 shows; however, a configuration can be used that covers the folded end 25A of the carcass ply 23 from the outer side in the direction of the tire's width. Even in this case, it is possible to reduce the concentration of stresses.

[0027] As an electrical component, an RFID transponder 40 is embedded in the tire 1 according to the present embodiment. The RFID transponder 40 is a passive transponder equipped with an RFID chip and an antenna for communication with an external device and performs wireless communication with a reader (not shown) serving as the external device. A spiral spring antenna, a plate-shaped antenna, and various types of rod-shaped antennas can be used. For example, it can be an antenna produced by printing a predetermined pattern onto a flexible substrate. The antenna is manufactured with an antenna length optimized for the frequency band to be used, etc. Identification information such as a production number and an article number is stored in a memory element inside the RFID chip.

[0028] Fig. Figure 2 is an enlarged sectional view showing the environment of an embedded part of the RFID transponder 40 in the tire 1 according to Fig. Figure 1 shows that the RFID transponder 40 is (even in a state where at least part of it is enclosed by the protective element 43 described later) arranged at an intersection of at least three tire body elements that form the tire 1. More precisely, several tire body elements comprise a rubber element and a fiber element, and the RFID transponder 40 is arranged at an intersection of at least three tire body elements that comprise at least one fiber element. More precisely, the RFID transponder 40 includes at least one fiber element and at least one rubber element and is arranged at an intersection of the at least three tire body elements. Here, a rubber-coated fiber element, such as a carcass ply 23, a steel belt 26, a steel bead 31, etc., is considered one of the fiber elements that form the tire 1.The tire 1 according to the present embodiment comprises: the carcass ply 23 as a fiber element, the steel belt 26 as a fiber element arranged on the outer side of the carcass ply 23 in the radial direction of the tire, and the sidewall pad 38 as a rubber element arranged in an outer region between the carcass ply 23 and the steel belt 26 in the width direction of the tire, and the RFID transponder 40 is arranged at an intersection of the carcass ply 23, the steel belt 26, and the sidewall pad 38. In other words, in the present embodiment, the RFID transponder 40 is arranged at the intersection of the three tire body elements, which comprise two fiber elements.

[0029] Even more preferably, the RFID transponder 40 is integrally enclosed by the protective element 43, which consists of the rubber sheathing plate described later, and this protective element 43 is arranged at the intersection of the three tire body elements, which comprise two fiber elements. More precisely, this protective element 43 is located between the carcass ply 23 and the steel belt 26 and is in contact with the sidewall pad 38 on its outer side in the direction of the tire's width.

[0030] Here, the carcass ply 23, the steel belt 26, and the sidewall pad 38 are each ring-shaped, cylindrical tire body elements that form the ring-shaped tire 1. The protective element 43, which protects the RFID transponder 40, is then arranged so that it is in contact with the carcass ply 23, the steel belt 26, and the sidewall pad 38.

[0031] As long as the RFID transponder 40 is arranged in such a position, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by the carcass layer 23, the steel belt 26, and the sidewall pad 38. In the present embodiment, while the RFID transponder 40 is arranged between the carcass layer 23 and the steel belt 26, the contact with the sidewall pad 38 on the outer side (in the direction of the tire's width) further reduces the resulting stresses due to the presence of the sidewall pad 38, which is the rubber element in contact with it, while the RFID transponder is simultaneously intensively protected by the two fiber elements.

[0032] Furthermore, by defining the intersection position of three elements as a reference for the arrangement position of the RFID transponder 40, the range of variation in the arrangement position of the RFID transponder 40 is reduced. Likewise, the possibility of accidentally placing the RFID transponder 40 in an unfavorable position is reduced, thus making it possible to maintain the functionality of the RFID transponder 40 appropriately.

[0033] As long as it is such a position, the RFID transponder 40 will hardly be affected by the stresses occurring on the circumference of the end section 26A of the steel belt 26, since it is possible to arrange it at the position furthest from the inner side of the end section 26A of the steel belt 26 in the direction of the width of the tire.

[0034] It should be noted that the side pad 38 is the cushioning rubber, which has shock-absorbing properties. Accordingly, as long as the RFID transponder 40 is positioned in this section, it is possible to absorb the stress occurring at the circumference of the RFID transponder 40. Furthermore, the side pad generates little heat. Consequently, the RFID transponder 40, positioned in this way, is hardly affected by the heat generated by the rubber during operation. Even considering these points, the intersection of the carcass layer 23, the steel belt 26, and the side pad 38 is suitable as an embedding position for the RFID transponder 40.

[0035] Furthermore, the RFID transponder 40 is not removed during retreading if it is located at the intersection of the carcass ply 23, the steel belt 26, and the sidewall liner 38. In other words, the RFID transponder 40 can be used continuously without removal if it is positioned at the intersection of the carcass ply 23, the steel belt 26, and the sidewall liner 38, because the section of tread rubber 28 removed during retreading is located further outward on the tire's radial side than at least the steel belt 26. Therefore, the intersection of the carcass ply 23, the steel belt 26, and the sidewall liner 38 is also a suitable embedding position for the RFID transponder 40.

[0036] It should be noted that when specifying the modulus of the sidewall pad 38 as a reference value for the sidewall rubber 30, a modulus of 0.4 to 0.7 times the modulus of the sidewall pad 38 is preferably specified. Furthermore, a modulus of 0.4 to 0.9 times the modulus of the sidewall pad 38 is preferably specified for the tread rubber 28. By specifying such a modulus, it is possible to maintain the balance between elasticity and stiffness in the tire. It should be noted that the modulus represents 100% of the modulus of strain (M100) at an atmosphere of 23°C, measured according to JIS K6251:2010 at a stress of 3.7 at a given strain S.

[0037] Here, the RFID transponder 40 is enclosed by the rubber sheathing plates 431, 432, which form the protective element 43. This point is described with reference to the Fig. 3A to 3C explained.

[0038] Fig. Figure 3A is a view showing the RFID transponder 40 enclosed by the protective element 43, which is formed by a rubber plate. Fig. 3A the RFID transponder 40 is covered and concealed by the rubber sheathing plate 431 described later. Fig. 3B is a sectional view along line bb in Fig. 3A, and Fig. 3C is a section view along line cc in Fig. 3A.

[0039] The RFID transponder 40 comprises an RFID chip 41 and an antenna 42 for communication with an external device. The antenna 42 can be a spiral spring antenna, a plate-shaped antenna, or various types of rod-shaped antennas. For example, it could be an antenna produced by printing a predefined pattern onto a flexible substrate. Considering communication capabilities and elasticity, a spiral spring antenna is the most advantageous. The antenna length is optimized with regard to the frequency band to be used, etc.

[0040] The protective element 43 is formed by two rubber encasing plates 431, 432, which protect the RFID transponder 40 by enclosing it.

[0041] The protective element 43, for example, is made of rubber with a specified modulus. Here, the modulus represents 100% of the elongation modulus (M100) in an atmosphere of 23°C, measured according to JIS K6251:2010 at a stress of 3.7 at a given strain S.

[0042] The rubber used for the protective element 43 must have a higher modulus than the sidewall rubber 30. For example, rubber with a higher modulus than the sidewall rubber 30 and a lower modulus than the side padding 38 is used.

[0043] Using the module of the sidewall rubber 30 as a reference, for example, it is advantageous to use rubber with a module 1.1 to 1.8 times that of the rubber used for the protective element 43. At the same time, rubber with a module 1.6 to 3 times that of the sidewall rubber, for example, rubber with a module on the order of 2 times that of the sidewall rubber, can be used for the side padding 38. It should be noted that rubber with a module higher than that of the side padding 38 can be selected for the protective element 43 if particular emphasis is placed on reinforcing the protection of the RFID transponder 40.

[0044] Furthermore, the protective element 43 can be made of rubber to which a short-fiber filler has been added. Examples of short-fiber fillers include insulating short fibers such as organic short fibers like aramid and cellulose short fibers; inorganic short fibers such as ceramic short fibers like aluminum oxide and glass short fibers. Adding such short-fiber fillers to the rubber increases its stiffness. Additionally, a vulcanized rubber sheet can be used as the protective element 43. Unlike raw rubber, the vulcanized rubber sheet does not deform plastically and can therefore adequately protect the RFID transponder 40.However, if the processability during assembly during the manufacturing process or the stabilization of the rubber structures by integration into other rubber elements during vulcanization is taken into account, the use of a rubber sheet with a predetermined thickness in the state before vulcanization as a protective element 43 is preferable.

[0045] Furthermore, an organic fiber layer made of polyester or polyamide fibers can be provided as a protective element 43. It is also possible to embed an organic fiber layer in the two encapsulating rubber plates 431, 432.

[0046] Next, the manufacturing process of tire 1 will be explained. The RFID transponder 40, enclosed by the protective element 43, is mounted before the vulcanization process of the tire manufacturing process. In the manufacturing process of tire 1 according to the present embodiment, the protective element 43 enclosing the RFID transponder 40 is glued onto the carcass layer 23.

[0047] The sidewall pad 38 is then glued onto the carcass layer 23. At this point, the gluing positions of the protective element 43 and the sidewall pad 38 are positioned such that the position of the protective element 43 enclosing the RFID transponder 40 and the position of the inner end 38A of the sidewall pad 38 in the direction of the tire's width essentially coincide. The overlapping position of the protective element 43 near the inner end 38A of the sidewall pad 38 in the direction of the tire's width can be partially removed. It should be noted that after the sidewall pad 38 has been glued onto the carcass layer 23, the RFID transponder 40 can be affixed in such a way that an end section is visible in a cross-sectional view in the direction of the tire's width (see Figure 1). Fig. 1 and Fig. 2) The inner end 38A of the tapered sidewall pad 38, in the direction of the tire's width, is pressed downwards. At this point, the protective element enclosing the RFID transponder 40 can be glued on so that it spans the carcass layer 23 and the sidewall pad 38 at a boundary area between the carcass layer 23 and the sidewall pad 38.

[0048] Furthermore, the steel belt 26 is then glued in such a way that it covers the outer side of the carcass ply 23 and the sidewall pad 38 in the radial direction of the tire. The RFID transponder 40, enclosed by the protective element 43, is arranged at the intersection of the three tire body elements, which comprise the two fiber elements, i.e., the carcass ply 23 and the steel belt 26, and the sidewall pad 38.

[0049] At this stage, the casing rubber of the carcass layer 23, the casing rubber of the steel belt 26, and the sidewall pad 38 are in the raw rubber state before vulcanization; therefore, the RFID transponder 40 can be adhered to the sidewall pad 38 or the sidewall rubber 30 using its adhesive properties. Alternatively, in cases where the adhesive properties are low, it can be adhered using an adhesive or the like.

[0050] The individual rubber elements, etc., that make up the tire are assembled in this way, creating the tire blank. Subsequently, the tire blank, in which the individual components including the RFID transponder 40 are mounted, is vulcanized in the vulcanization process to manufacture the tire.

[0051] Since, in the present embodiment, it is possible to adhere the RFID transponder 40, enclosed by the protective element 43, to the casing rubber, etc., of the carcass layer 23 during the raw rubber manufacturing process of the tire, the task of mounting the RFID transponder 40 in the tire manufacturing process is simplified. In particular, the task of mounting the RFID transponder 40, enclosed by the protective element 43, is simplified because the carcass layer 23 possesses a certain degree of rigidity.

[0052] Since the design of the protective element 43, consisting of the two rubber sheathing plates 431, 432, allows for the creation of a thin RFID transponder 40 that encompasses the protective element 43, it is also suitable for embedding in the tire 1. Furthermore, the RFID transponder 40 enclosed by the rubber sheathing plates can be very easily installed on the components of the tire 1 before vulcanization. For example, it is possible to adhere the RFID transponder 40 enclosed by the rubber sheathing plates 431, 432 to a desired position on an element, such as the interface between several rubber elements, before vulcanization, utilizing the adhesive properties of the raw rubber. Additionally, by also inserting the rubber sheathing plates 431, 432 as raw rubber before vulcanization, further facilitating easier adhesion, also utilizing the adhesive properties of the rubber sheathing plates themselves.

[0053] The protective element 43 is not limited to the shape formed by two rubber encapsulation plates and can assume various forms. As long as the rubber encapsulation plates forming the protective element enclose at least part of the RFID transponder 40, results such as improved processability during manufacturing and a reduction in stress can be achieved. Accordingly, a configuration can be chosen in which only one side of the RFID transponder 40 is covered by the single rubber encapsulation plate 431 serving as the protective element. Furthermore, it can be, for example, a configuration in which a rubber plate is wrapped around the entire circumference of the RFID transponder 40, or a configuration in which the protective element is applied along the entire circumference of the RFID transponder 40 in the form of a high-viscosity potting compound.Even with a configuration using such a rubber casing, adequate protection of the RFID transponder 40 is possible.

[0054] It should be noted that the RFID transponder 40 enclosed by the protective element 43 is embedded in the tire 1 in such a way that the direction in which the antenna extends, i.e. its longitudinal direction, is in relation to the circumferential direction of the tire 1, for example, the direction of the tangent line, i.e., the direction to the paper plane of the sectional views of the Fig. 1 and Fig. 2. perpendicular direction. Furthermore, the rubber casing sheets 431, 432 are embedded in the tire 1 in such a way that they are aligned in the radial direction of the tire. In other words, during the manufacturing process, a surface of one of the rubber casing sheets 431, 432 is bonded to a component of the tire 1, e.g., the carcass layer 23, before vulcanization. Then, the RFID transponder 40, enclosed by the protective element 43, is positioned between the carcass layer 23 and the steel belt 26. By defining such a shape, even if the tire 1 deforms, hardly any stresses act on the RFID transponder 40. Moreover, the task of attaching the RFID transponder 40, enclosed by the protective element 43, is made easier during the manufacturing process.

[0055] It should be noted that the RFID transponder 40 is preferably arranged in a state enclosed by the aforementioned protective element 43 at the intersection of the carcass ply 23, the steel belt 26, and the sidewall pad 38; however, it can also be arranged directly at the intersection of the carcass ply 23, the steel belt 26, and the sidewall pad 38 without being enclosed by the protective element 43. With a direct arrangement of the unenclosed RFID transponder 40 at the intersection of the carcass ply 23, the steel belt 26, and the sidewall pad 38, the deviation in the thickness of the rubber element at the section where the RFID transponder 40 is located decreases, and the uniformity of the tire is improved. Furthermore, when embedding the RFID transponder 40 in such a position, the removal of air is also made easier due to the smaller volume of the embedded object.Furthermore, the elimination of the process of encasing the RFID transponder 40 with the protective element reduces working time.

[0056] It should be noted that in the present embodiment, the RFID transponder 40 is embedded in the tire as an electronic unit; however, the electronic unit embedded in the tire is not limited to an RFID transponder. Various electronic units are possible, such as a sensor that performs wireless communication. Furthermore, since the electronic unit processes electrical information, such as the transmission of electrical signals, there is a possibility of reduced performance due to the presence of nearby metal components. In addition, there is a possibility of damage to the electronic unit from the application of excessive voltages. Therefore, it is also possible to achieve the results of the present invention when embedding different electronic units in a tire.The electronic unit could be, for example, a piezoelectric element or a load sensor.

[0057] The following results are achieved with the tire 1 according to the present embodiment. (1) The tire 1 according to the present embodiment comprises several tire body elements forming the tire and the RFID transponder 40 as an electronic unit, wherein the several tire body elements comprise rubber elements and fiber elements, and the RFID transponder 40 is arranged at the intersection of the at least three tire body elements, each comprising at least one fiber element. This makes it possible to effectively prevent movement of the RFID transponder 40 when the tire deforms, thereby adequately protecting the RFID transponder 40. Furthermore, by defining the intersection of three elements as a reference for the arrangement position of the RFID transponder 40, deviations in the arrangement position of the RFID transponder 40 are reduced.The possibility of accidentally placing the RFID transponder 40 in an unfavorable position is also reduced, and this makes it possible to maintain the function of the RFID transponder 40 appropriately. (2) The three tire body elements comprising the single fiber element of the tire 1 according to the present embodiment are each ring-shaped, annular elements. In this way, it is possible to achieve the results listed above even when the three tire body elements are annular elements forming the annular tire 1. (3) In the RFID transponder 40 of the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the at least three tire body elements, which comprise at least two fiber elements. This makes it possible to strongly protect the RFID transponder by means of the two fiber elements. (4) The fiber elements of the tire 1 according to the present embodiment comprise the carcass ply 23 and the steel belt 26 arranged on the outer side of the carcass ply 23 in the radial direction of the tire; the rubber element comprises the sidewall pad 38 arranged on the outer section between the carcass ply 23 and the steel belt 26 in the width direction of the tire; and the RFID transponder 40 is arranged at the intersection of the carcass ply 23, the steel belt 26, and the sidewall pad 38. As long as such a configuration is used, the presence of the sidewall pad 38, which is a rubber element, allows for a reduction in the generated stresses while simultaneously providing strong protection for the RFID transponder 40 by the two fiber elements in the form of the carcass ply 23 and the steel belt 26. (5) At least part of the RFID transponder 40 of the tire 1 according to the present embodiment is enclosed by the rubber sheathing plates 431, 432, and the rubber sheathing plates enclosing the RFID transponder 40 are arranged at the intersection of the at least three tire body elements, which comprise at least one fiber element. This allows for easy mounting of the RFID transponder 40 on the component of the tire 1 before vulcanization. (6) In the RFID transponder 40 of the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the at least three tire body elements, which comprise at least one fiber element and at least one rubber element. This makes it possible to reduce the stresses caused by the presence of the rubber element while simultaneously providing intensive protection for the RFID transponder 40 by the fiber element. <Zweite Ausführungsform>

[0058] Next, a tire according to a second embodiment will be explained with reference to the drawings. It should be noted that in the following explanation, configurations that correspond to those according to the first embodiment are assigned the same reference numerals, and their detailed explanations are omitted.

[0059] Fig. Figure 4 is an enlarged sectional view showing the environment of the embedded part of the RFID transponder 40 in the tire 1 according to the present embodiment. As shown in Fig. As shown in Figure 4, the RFID transponder 40 (also in a state in which at least part of it is enclosed by the protective element 43) is arranged at the intersection of the three tire body elements, which comprise a fiber element. More precisely, according to the present embodiment, the tire 1 comprises the carcass layer 23 as a fiber element, the sidewall pad 38 as a rubber element arranged on the outer surface of the carcass layer 23, and the sidewall rubber 30 as a rubber element arranged on the outer surface of the carcass layer 23 and the sidewall pad 38, wherein the RFID transponder 40 is arranged at the intersection of the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30.

[0060] In the present embodiment, the RFID transponder 40 is preferably enclosed by the protective element 43, which consists of rubber sheathing sheets. This protective element 43 is arranged at the intersection of the three tire body elements, which comprise a fiber element. More precisely, this protective element 43 is positioned in the boundary region of the carcass layer 23 and the sidewall pad 38 such that it spans the boundary region of the carcass layer 23 and the sidewall pad 38. In other words, this protective element 43 is bonded in such a way that an end section is visible in a sectional view in the direction of the width of the tire (see Figure 43). Fig. 4) Pressure is exerted on the inner end 38B of the tapered sidewall pad 38 in the radial direction of the tire. Then, with this protective element 43, the side of the outer surface of the tire is covered by the sidewall rubber 30.

[0061] Here, the carcass ply 23, the sidewall pad 38, and the sidewall rubber 30 are each ring-shaped tire body elements that form the ring-shaped tire 1. The protective element 43, which protects the RFID transponder 40, is then arranged so that it is in surface contact with the carcass ply 23, the sidewall pad 38, and the sidewall rubber 30.

[0062] Even if the RFID transponder 40 is arranged in such a position, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30. Furthermore, since the RFID transponder 40 is in contact with the sidewall pad 38 and the sidewall rubber 30 in the present embodiment, and is held against the carcass layer 23, it is possible, while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element, to reduce the stresses caused by the presence of the sidewall pad 38 and the sidewall rubber 30, which are contacting rubber elements.By defining the boundary area of ​​several tire body elements, in the present embodiment the boundary area B of the carcass layer 23 and the sidewall pad 38 as a reference for the arrangement position of the RFID transponder 40, the deviation of the arrangement position of the RFID transponder 40 is reduced. The possibility of accidentally arranging the RFID transponder 40 in a position that is unfavorable with regard to tension, twisting or the like is also reduced, thus making it possible to adequately maintain the function of the RFID transponder 40.

[0063] Furthermore, by arranging the RFID transponder 40 on a sidewall section, i.e., in the radial direction of the tire on the outside near the sidewall, it is possible to position the RFID transponder 40 sufficiently far from the metal bead core 21, where there is a possibility of communication interference. Here, the bead core 21 is manufactured by layering and winding a ring-shaped metal bead wire; therefore, it is a metal element where the possibility of adverse communication interference is particularly high. Moreover, considering the quality of communication, it is preferable to arrange the RFID transponder 40 in a section of the tire 1 that is as close as possible to the outer surface.Assuming the RFID transponder 40 were located on the side of the carcass ply 23 where the inner cavity is situated, the communication quality would decrease due to its distance from the outer surface of the tire 1. Furthermore, the communication quality is significantly reduced when the carcass ply 23 is made of metal and the RFID transponder 40 is located on the side of the carcass ply 23 where the inner cavity is situated. Taking these points into account, the intersection of the carcass ply 23, the sidewall liner 38, and the sidewall rubber 30 is a suitable embedding position for the RFID transponder 40.

[0064] Furthermore, considering the integration of the RFID transponder 40 during the tire manufacturing process, positioning it at the intersection of three tire body elements that comprise the tire is preferable. For example, integrating the RFID transponder 40 between layers of coiled, ribbon-like rubber elements complicates the timing of its application to the rubber element. Additionally, if the RFID transponder 40 is simply placed between two rubber elements, establishing a reference point for its position becomes difficult, and the electronic unit's position may deviate from the intended orientation.Provided, on the other hand, that it is positioned at the intersection of the three tire body elements as in the present embodiment, and if the RFID transponder 40 is precisely adhered to the boundary between a first tire body element formed by a fiber element (in the present embodiment, the carcass layer 23) and a second tire body element formed by a rubber element (in the present embodiment, the sidewall pad 38), it is possible during the tire forming process to position the RFID transponder 40 intermediately by placing a first tire body element (in the present embodiment, the sidewall rubber 30) over it. Even considering these points, the intersection of the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30 is suitable as an embedding position for the RFID transponder 40.

[0065] It should be noted that the sidewall pad 38 has a cushioning property. Accordingly, it is possible to absorb the stresses generated at the circumference of the RFID transponder 40, provided the RFID transponder 40 is positioned in this section. Furthermore, the sidewall pad generates little heat. Consequently, the RFID transponder 40, positioned in this way, is hardly affected by the heat generated by the rubber during operation. Even considering these points, the intersection of the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30 is suitable as an embedding position for the RFID transponder 40.

[0066] Furthermore, the RFID transponder 40 is not removed even during retreading, as long as it is positioned at the intersection of the carcass ply 23, the sidewall liner 38, and the sidewall rubber 30. In other words, the RFID transponder 40 is not removed and can be used continuously if it is positioned at the intersection of the carcass ply 23, the sidewall liner 38, and the sidewall rubber 30, because the section removed during retreading is located further outward on the tire's radial side than at least the steel belt in the tread rubber 28. Therefore, the intersection of the carcass ply 23, the sidewall liner 38, and the sidewall rubber 30 is also a suitable embedding position for the RFID transponder 40.

[0067] Next, the manufacturing process of tire 1 will be explained. Fig. 5A is a view during the manufacturing process from the outer side of a circumferential section of the protective element 43 in the direction of the width of the tire and a view when the protective element 43 enclosing the RFID transponder 40 is glued onto a boundary area B of the carcass layer 23 and the sidewall pad 38.

[0068] The RFID transponder 40, enclosed by the protective element 43, is installed during the tire manufacturing process before the vulcanization process. As in Fig. As shown in Figure 5A, in the present embodiment, during the manufacturing process of the tire 1, the protective element 43 surrounding the RFID transponder 40 is glued on such that it spans the carcass layer 23 and the sidewall pad 38 in the boundary region B of the carcass layer 23 and the sidewall pad 38. In other words, this protective element 43 is glued on such that an end section in a sectional view in the direction of the width of the tire (see Figure 5A) Fig. 4) Pressure is exerted on the inner end 38B of the tapered sidewall pad 38 in the radial direction of the tire. By adhering the protective element 43 in such a position, it is possible to partially support the connection between the tire body elements, i.e., the connection of the carcass layer 23 with the sidewall pad 38.

[0069] Furthermore, by defining a boundary area between several rubber elements, in the present embodiment the boundary area B of the carcass layer 23 and the sidewall pad 38 as a reference for the arrangement position of the RFID transponder 40, the deviation of the arrangement position of the RFID transponder 40 is reduced. The possibility of an erroneous arrangement of the RFID transponder 40 in a position unfavorable with regard to tension, twisting or the like is also reduced, thus making it possible to adequately maintain the function of the RFID transponder 40.

[0070] Following on Fig. 5A is the side wall rubber not shown (see Fig. 5) is adhered in such a way that it covers the protective element 43 adhered to the boundary area B of the carcass layer 23 and the sidewall pad 38. The RFID transponder 40 enclosed by the protective element 43 is thereby positioned at the intersection of at least three tire body elements that form the tire 1, in the present embodiment at the intersection of the carcass layer 23, the sidewall pad 38 and the sidewall rubber 30.

[0071] At this stage, the outer rubber of the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30 is in the raw rubber state before vulcanization; therefore, the RFID transponder 40, enclosed by the protective element 43, can be adhered to these elements by utilizing its adhesive properties. Alternatively, in cases where the adhesive properties are low, it can be adhered using an adhesive or similar substance.

[0072] The individual rubber components, etc., that make up the tire are assembled in this way, thus producing the tire blank. Subsequently, the tire blank, in which the individual components, including the RFID transponder 40, are mounted, is vulcanized in the vulcanization process to manufacture the tire.

[0073] Since, in this embodiment, it is possible to adhere the RFID transponder 40, enclosed by the protective element 43, to the casing rubber of the carcass layer 23 and the sidewall pad 38, which are in their raw rubber state, during the tire manufacturing process, the assembly of the RFID transponder 40 during the tire manufacturing process is straightforward. In particular, the assembly of the RFID transponder 40 enclosed by the protective element 43 is straightforward because the carcass layer 23 possesses a certain degree of rigidity.

[0074] It should be noted that the following manufacturing process can be used as a modified example of the manufacturing process of tire 1. In other words, the protective element 43 enclosing the RFID transponder 40 is glued to one side of the sidewall rubber 30, and then the sidewall rubber 30, to which the protective element 43 is glued, is glued to the carcass layer 23 and the sidewall pad 38. When the sidewall rubber 30 is glued to the carcass layer 23 and the sidewall pad 38, the protective element 43 is positioned such that it is located at the boundary area B between the carcass layer 23 and the sidewall pad 38. Even in a case where such a process is chosen, the RFID transponder 40 enclosed by the protective element 43 will be located at the intersection of at least three tire body elements that form the tire 1, i.e.The RFID transponder 40 is positioned at the cutting point of the carcass layer 23, the sidewall pad 38, and the sidewall rubber 30. Accordingly, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40.

[0075] It should be noted that the RFID transponder 40 enclosed by the protective element 43 is embedded in the tire 1 such that the direction in which the antenna extends, i.e. its longitudinal direction, is in relation to the circumferential direction of the tire 1, for example, the direction of the tangent line, i.e., the direction to the paper plane of the sectional view according to Fig. 4. perpendicular direction. In the process of assembling the RFID transponder 40, it is possible to define the boundary area of ​​the several rubber elements, the circular shape of the RFID transponder 40 enclosed by the protective element 43, by defining the boundary area of ​​the several rubber elements, the circular shape of the in Fig. The boundary area B of the carcass layer 23 and the sidewall pad 38 (the shape of the inner edge of the radially inner end 38B of the sidewall pad 38) shown in Figure 5A can simply be arranged in the direction mentioned above as a reference. In other words, the RFID transponder 40, as shown in Fig. 5A, shown, with the circular shape of the boundary area B as a reference, are glued on in such a way that the longitudinal direction of the rubber covering plates 431, 432 essentially coincides with the direction of the tangent line of the circular shape of the boundary area B.

[0076] Fig. Figure 5B shows a modified example of the manufacturing process and a case in which the bonding takes place, whereby the enclosing rubber sheets 431, 432 surrounding the RFID transponder 40 are bent to follow the circular shape of the boundary region B of the carcass layer 23 and the sidewall pad 38. At this point, the raw rubber enclosing rubber sheets 431, 432 can also be bonded while being deformed to follow the circumferential direction of the boundary region B. By using a flexible, spiral spring antenna or the like as the antenna of the RFID transponder 40, a shape can be defined such that the antenna also deforms according to the deformation of the enclosing rubber sheets 431, 432. Using these methods, it is possible to position the RFID transponder 40 enclosed by the protective element 43 simply and precisely in the aforementioned direction without the need for special markings.

[0077] Fig. Figure 5C shows a modified example of the protective element, specifically the ring-shaped rubber plate 50. The RFID transponder 40 is positioned, for example, between the two ring-shaped rubber plates to form the protective element. In this case, it is advantageous to produce a mold in which the entire circumference of the boundary area B between the carcass layer 23 and the sidewall pad 38 is covered by the ring-shaped rubber plate 50. This makes it possible to complete the connection between the rubber elements, i.e., the connection between the carcass layer 23 and the sidewall pad 38.

[0078] Fig. Figure 6 shows a modified example of tire 1 according to the present embodiment. In a Fig. In the first modified example shown in Figure 6, the protective element 43 enclosing the RFID transponder 40 is positioned at the intersection of the carcass ply 23, the second pad 36, and the sidewall rubber 30. In the present modified example, the protective element 43 enclosing the RFID transponder 40 is positioned such that it spans the carcass ply 23 and the second pad 36 at the boundary between the carcass ply 23 and the second pad 36. In other words, the protective element 43 is bonded in such a way that it exerts pressure from one side of the outer surface of the tire on the outer end 36A of the second pad 36, which is located in the radial direction of the tire and is shown in a cross-sectional view in the direction of the width of the tire ( Fig. 6) has an end section that has a tapered shape. Then, with respect to the protective element 43, the side of the outer surface of the tire is covered by the sidewall rubber 30. Even if the RFID transponder 40 is positioned in such a location, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by several tire body elements, i.e., the carcass layer 23, the second pad 36, and the sidewall rubber 30. By defining the boundary area of ​​several tire body elements—in the present modified example, the boundary area of ​​the carcass layer 23 and the second pad 36—as a reference for the arrangement position of the RFID transponder 40, the deviation of the arrangement position of the RFID transponder 40 is reduced.The possibility of accidentally placing the RFID transponder 40 in a position that is unfavorable with regard to tension, twisting or the like is also reduced, making it possible to maintain the function of the RFID transponder 40 appropriately.

[0079] In addition to the above points (1), (2) and (5), the following results are achieved with the tire 1 according to the present embodiment.

[0080] (7) Three tire body elements of the tire 1 according to the present embodiment comprise: the carcass layer 23 as the first tire body element, which is formed by a fiber element; the sidewall pad 38 or the second pad 28 as the second tire body element, which is arranged to cover a part of the first tire body element and in which an end section in a sectional view in the direction of the width of the tire is formed from a tapered rubber element; and the sidewall rubber 30 as the third tire body element, which covers at least a boundary region of the fiber element and the rubber element, wherein a covering rubber sheet is arranged to span the first tire body element and the second tire body element in the boundary region of the first tire body element and the second tire body element and is covered by the third tire body element.This makes it possible to supplement the connection of the first tire body element and the second tire body element and, in the present embodiment, the connection of the carcass layer 23 as the first tire body element and the sidewall pad 38 or the second pad 36 as the second tire body element.

[0081] (8) The manufacturing process for producing the tire 1 according to the present embodiment comprises: a step of bonding the sheathing rubber sheets 431, 432 such that they span the first tire body element and the second tire body element at the boundary between the first and second tire body elements; and a step of bonding the third tire body element such that it covers the sheathing rubber sheets 431, 432 bonded to the boundary between the first and second tire body elements. This makes it possible to complete the connection between the first and second tire body elements and, in the present embodiment, the connection between the carcass layer 23 as the first tire body element and the sidewall pad 38 or the second pad 36 as the second tire body element.

[0082] (9) In the RFID transponder 40 of the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of at least three tire body elements, comprising a fiber element and two rubber elements. This makes it possible to reduce stresses generated by the presence of two rubber elements while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element.

[0083] (10) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass ply 23 (a fiber element), the sidewall pad 38 (a rubber element), and the sidewall rubber 30 (a rubber element). This makes it possible to reduce the stresses generated by the presence of the sidewall pad 38 and the sidewall rubber 30, which are in contact with each other, while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, by defining the boundary region B of the carcass ply 23 and the sidewall pad 38 as a reference for the arrangement position of the RFID transponder 40, deviations in the arrangement position of the RFID transponder 40 are reduced.

[0084] (11) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass layer 23 (a fiber element), the second pad 36 (a rubber element), and the sidewall rubber 30 (a rubber element). This makes it possible to reduce the stresses generated by the presence of the second pad 36 and the sidewall rubber 30, which are rubber elements, while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, by defining the boundary region B of the carcass layer 23 and the second pad 36 as a reference for the arrangement position of the RFID transponder 40, deviations in the arrangement position of the RFID transponder 40 are reduced.

[0085] (12) In the tire 1 according to the present embodiment, the RFID transponder 40 is enclosed by the annular rubber plate 50, and the annular rubber plate 50 covers the entire circumference of the boundary area between the annular first tire body element and the annular second tire body element. This makes it possible to complete the connection between the first tire body element and the second tire body element. For example, it is possible to complete the connection between the carcass layer 23 as the first tire body element and the sidewall pad 38 or the second pad 36 as the second tire body element. <Dritte Ausführungsform>

[0086] Next, a tire according to a third embodiment will be explained with reference to the drawings. It should be noted that in the following explanation, configurations that correspond to those according to the first and second embodiments are assigned the same reference numerals, and their detailed explanations are omitted.

[0087] Fig. Figure 7 is an enlarged sectional view showing the environment of an embedded part of the RFID transponder 40 in the tire 1 according to the present embodiment. As shown in Fig. As shown in Figure 7, the RFID transponder 40 (also in a state in which at least part of it is enclosed by the protective element 43) is arranged at the intersection of three tire body elements, each comprising a fiber element. The tire 1 according to the present embodiment comprises, for example: the carcass layer 23 as a fiber element, a second bead filler 222 as a rubber element arranged on the outer surface of the carcass layer 23, and the second pad 36 as a rubber element arranged on the outer surface of the carcass layer 23 and the second bead filler 222, wherein the RFID transponder 40 is arranged at the intersection of the carcass layer 23, the second bead filler 222, and the second pad 36.

[0088] In the present embodiment, the RFID transponder 40 is also advantageously enclosed by the protective element 43, which consists of rubber sheets, and this protective element 43 is arranged at the intersection of three tire body elements that comprise a fiber element. More precisely, this protective element 43 is arranged such that it spans a boundary region between the carcass layer 23 and the second bead filler 222. In other words, this protective element 43 is bonded in such a way that it presses downwards the outer end 22A of the second bead filler 222 in the radial direction of the tire, which, in the sectional view, runs in the direction of the tire's width (see Figure 1). Fig. 7) has an end section that has a tapered shape. Then, in this protective element 43, the side of the outer surface of the tire is covered by the second pad 36.

[0089] In this configuration, the carcass layer 23, the second bead filler 222, and the second pad 36 are each ring-shaped tire body elements that form the ring-shaped tire 1. The protective element 43, which holds the RFID transponder 40, is then arranged so that it is in surface contact with the carcass layer 23, the second bead filler 222, and the second pad 36.

[0090] Even if the RFID transponder 40 is positioned in such a way, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by the carcass layer 23, the second bead filler 222, and the second pad 36. Furthermore, because the RFID transponder 40 is in contact with the second bead filler 222 and the second pad 36, and is held against the carcass layer 23, it is possible to reduce the stresses generated by the presence of the second bead filler 222 and the second pad 36, which are contacting rubber elements, while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element.By defining the boundary area of ​​several tire body elements, in the present embodiment the boundary area of ​​the carcass layer 23 and the second bead filler 222 as a reference for the arrangement position of the RFID transponder 40, deviations in the arrangement position of the RFID transponder 40 are reduced. The possibility of accidentally placing the RFID transponder 40 in an unfavorable position is also reduced, and thus it is possible to maintain the function of the RFID transponder 40 appropriately.

[0091] It should be noted that when specifying the module of the second pad 36 as the cover for the sidewall rubber 30, a module of 0.4 to 0.6 times the module of the second pad 36 is preferably specified. Furthermore, for the first pad 35, a module of 1.1 to 1.2 times the module of the second pad 36 is preferably specified. In addition, for the second bead filler 222, a module of 0.7 to 0.8 times the module of the second pad is preferably specified. If the module of the second pad 36 is then specified as the cover, for the rim tape rubber 32, a module of 0.8 to 1 times the module of the second pad 36 is preferably specified. Then, for the rubber plate 37, a module of 1.1 to 1.2 times the module of the second pad 36 is preferably specified.In other words, the modulus of the rubber pad 37 is preferably specified to be substantially the same as the modulus of a section (of the first pad 35) of the pad element 34 that covers the folded end 25A of the carcass ply 23. By specifying such a modulus, it is possible to maintain a balance between the elasticity of the tire and the stiffness near the bead 11. It should be noted that the modulus represents 100% of the modulus of extension (M100) at an atmosphere of 23°C, measured according to JIS K6251:2010 at a stress of 3.7 at a given strain S.

[0092] It should be noted that the RFID transponder 40 can be arranged at a position of an end section 32B on the inner side of the rim tape rubber 32 in the direction of the width of the tire, i.e., at the intersection position of the carcass layer 23, the rim tape rubber 32, and the inner lining 29, as shown in Fig. Figure 7 is shown by the dashed line. Even in this case, the RFID transponder 40 is located at the intersection of three tire body elements that comprise a fiber element. Accordingly, it is possible to achieve the results listed above, such as adequate protection of the RFID transponder 40 and a reduction in the deviation of the RFID transponder 40's position.

[0093] It should be noted that the RFID transponder 40 can be arranged at a position of the inner end 36B of the second pad 36 in the radial direction of the tire, i.e., the intersection position of the carcass layer 23, the second pad 36 and the rim tape rubber 36, as shown in Fig. Figure 7 is shown by the dashed line. Even in this case, the RFID transponder 40 is located at the intersection of three tire body elements that comprise a fiber element. Accordingly, it is possible to achieve the results listed above, such as adequate protection of the RFID transponder 40 and a reduction in the deviation of the RFID transponder 40's position.

[0094] In addition to the above points (1), (2), (5), (7) to (9) and (12), the following results are achieved by the tire 1 according to the present embodiment.

[0095] (13) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the cutting point of the carcass layer 23 (as a fiber element), the second bead filler 222 (as a rubber element), and the second pad 36 (as a rubber element). This makes it possible to reduce the stresses generated by the rubber element while simultaneously and effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved.

[0096] (14) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass layer 23 (as a fiber element), the rim band rubber 32 (as a rubber element), and the inner lining 29 (as a rubber element). This makes it possible to reduce the stresses generated by the rubber element while simultaneously and effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved.

[0097] (15) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass layer 23 (fiber element), the second pad 36 (rubber element), and the rim band rubber 32 (rubber element). This makes it possible to reduce the stresses generated by the rubber element while simultaneously and effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved. <Vierte Ausführungsform>

[0098] Next, a tire according to a fourth embodiment will be explained with reference to the drawings. It should be noted that in the following explanation, configurations that correspond to those according to the first to third embodiments are assigned the same reference numerals, and their detailed explanations are omitted.

[0099] Fig. Figure 8 is an enlarged sectional view showing the environment of an embedded part of the RFID transponder 40 in the tire 1 according to the present embodiment. As shown in Fig. As shown in Figure 8, the RFID transponder 40 (also in a state in which at least part of it is enclosed by the protective element 43) is arranged at the intersection of three tire body elements, which comprise two fiber elements. The tire 1 according to the present embodiment comprises, for example: the carcass ply 23 as a fiber element, the steel bead 31 as a fiber element, and the inner liner 29 as a rubber element, wherein the RFID transponder 40 is arranged at the intersection of the carcass ply 23, the steel bead 31, and the inner liner 29 in a state in which it is in contact with the end section 31B on the inner side of the steel bead 31 in the direction of the width of the tire.

[0100] Then, in the present embodiment, the RFID transponder 40 is advantageously enclosed by the protective element 43, which consists of a rubber sheathing plate, and this protective element 43 is arranged at the intersection position of three tire body elements, which comprise two fiber elements.

[0101] In this arrangement, the carcass layer 23, the steel bead band 31 and the inner lining 29 are each a ring-shaped tire body element and form the ring-shaped tire 1. Then the protective element 43, which holds the RFID transponder 40, is arranged so that it is in contact with the carcass layer 23, the steel bead band 31 and the inner lining 29.

[0102] Even if the RFID transponder 40 is positioned in such a location, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by three tire body elements, which comprise two fiber elements. By defining the boundary area of ​​several tire body elements as a reference for the positioning of the RFID transponder 40, deviations in its position are reduced. The possibility of accidentally positioning the RFID transponder 40 in an unfavorable location is also reduced, thus ensuring the continued proper functioning of the RFID transponder 40.

[0103] It should be noted that the RFID transponder 40, in a state where it is in contact with the end section 31A on the outer side of the steel bead band 31 in the direction of the width of the tire, can be arranged at the intersection of the carcass layer 23, the steel bead band 31 and the first pad 35, as shown in Fig. Figure 8 is shown by the dashed line. Even in such a case, the RFID transponder 40 is located at the intersection of three tire body elements, which comprise two fiber elements. Accordingly, it is possible to achieve the results listed above, such as suitable protection of the RFID transponder 40 and a reduction in the deviation of the RFID transponder 40's position.

[0104] In addition to the above points (1) to (3), (5), (6) and (12), the following results are achieved by the tire 1 according to the present embodiment.

[0105] (16) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass layer 23 as a fiber element, the steel bead 31 as a fiber element, and the inner liner 29 as a rubber element. This makes it possible to reduce the stresses generated by the rubber element while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved.

[0106] (17) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the intersection of the carcass layer 23 as a fiber element, the steel bead band 31 as a fiber element, and the first pad 35 as a rubber element. This makes it possible to reduce the stresses generated by the rubber element while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved. <Fünfte Ausführungsform>

[0107] Next, with reference to the drawings, a tire according to a fifth embodiment is described. It should be noted that in the following explanation, configurations that correspond to those according to the first to third embodiments are assigned the same reference numerals, and their detailed explanations are omitted.

[0108] Fig. Figure 9 is an enlarged sectional view showing the environment of an embedded part of the RFID transponder 40 in the tire 1 according to the present embodiment. As shown in Fig. As shown in Figure 9, the RFID transponder 40 (also in a state in which at least part of it is enclosed by the protective element 43) is arranged at the intersection of the three tire body elements, which comprise a fiber element. More precisely, according to the present embodiment, the tire 1 comprises the carcass layer 23 as a fiber element, the rubber sheet 37 as a rubber element, and the second bead filler 222 as a rubber element, wherein the RFID transponder 40 is arranged at the intersection of the carcass layer 23, the rubber sheet 37, and the second bead filler 222 in a state in which it is in contact with the radially inner end 37B of the rubber sheet 37.

[0109] Then, in the present embodiment, the RFID transponder 40 is advantageously enclosed by the protective element 43, which consists of a rubber covering plate, and this protective element 43 is arranged at the intersection position of three tire body elements that comprise a fiber element.

[0110] In this case, the carcass layer 23, the rubber plate 37 and the second bead filler 222 are each a ring-shaped tire body element and form the ring-shaped tire 1. Then the protective element 43, which holds the RFID transponder 40, is arranged so that it is in contact with the carcass layer 23, the rubber plate 37 and the second bead filler 222.

[0111] Even if the RFID transponder 40 is positioned in such a location, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by three tire body elements that enclose a fiber element. By defining the boundary area of ​​several tire body elements as a reference for the positioning of the RFID transponder 40, deviations in its position are reduced. The possibility of the RFID transponder 40 being accidentally positioned unfavorably is also reduced, thus ensuring the continued proper functioning of the RFID transponder 40.

[0112] It should be noted that the RFID transponder 40, as in Fig. Figure 9, shown by the dashed line, shows a state in which it can be positioned at the intersection of the steel bead band 31, the first pad 35, and the second pad 36, with the inner end 35B of the first pad 35 in the radial direction of the tire. Even in this case, the RFID transponder 40 is positioned at the intersection of three tire body elements that comprise a fiber element. Accordingly, it is possible to achieve the results listed above, such as suitable protection of the RFID transponder 40 and a reduction in the deviation of the RFID transponder 40's position.

[0113] In addition to the above points (1), (2), (5), (9) and (12), the following results are achieved by the tire 1 according to the present embodiment.

[0114] (18) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the cutting position of the carcass layer 23 as a fiber element, the rubber pad 37 as a rubber element, and the second bead filler 222 as a rubber element. This makes it possible to reduce the stresses generated by the rubber element while simultaneously effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved. (19) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at the cutting position of the steel bead strip 31 as a fiber element, the first pad 35 as a rubber element, and the second pad 36 as a rubber element.This makes it possible to reduce the stresses generated by the rubber element while simultaneously and effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the positioning of the RFID transponder 40 are also achieved. <Sechste Ausführungsform>

[0115] Next, with reference to the drawings, a tire according to a sixth embodiment will be explained. It should be noted that in the following explanation, configurations corresponding to those of the first to third embodiments are assigned the same reference numerals, and their detailed explanations are omitted.

[0116] Fig. Figure 10 is an enlarged sectional view of the environment of an embedded part of the RFID transponder 40 in the tire 1 according to the present embodiment. As in Fig. As shown in Figure 10, the RFID transponder 40 (even in a state where at least part of it is enclosed by the protective element 43) is arranged at the intersection of the three tire body elements, which comprise a fiber element. More precisely, according to the present embodiment, the tire 1 comprises the carcass layer 23 as a fiber element, the second bead filler 222 as a rubber element, and the first bead filler 221 as a rubber element, wherein the RFID transponder 40 is arranged at position 22B on the inner side in the direction of the width of the tire, which is an intersection of the carcass layer 23, the second bead filler 222, and the first bead filler 221.

[0117] In the present embodiment, the RFID transponder 40 is preferably enclosed by the protective element 43, which consists of rubber sheeting, and this protective element 43 is arranged at the intersection of three tire body elements, which comprise a fiber element.

[0118] In this case, the carcass layer 23, the second bead filler 222 and the first bead filler 221 are each an annular tire body element and form the annular tire 1. Then the protective element 43, which holds the RFID transponder 40, is arranged so that it is in contact with the carcass layer 23, the second bead filler 222 and the first bead filler 221.

[0119] Even if the RFID transponder 40 is positioned in such a location, it is possible to effectively prevent movement of the RFID transponder 40 in the event of tire deformation and to adequately protect the RFID transponder 40, since the RFID transponder 40 is surrounded by three tire body elements that comprise a fiber element. By defining the boundary area of ​​several tire body elements as a reference for the positioning of the RFID transponder 40, deviations in its position are reduced. The possibility of the RFID transponder 40 being accidentally positioned unfavorably is also reduced, thus ensuring the continued functionality of the RFID transponder 40. It should be noted that the RFID transponder 40, as described in Fig. As shown by the dashed line in Figure 10, the RFID transponder 40 can be located at position 22C on the outer side in the direction of the tire's width, which is the intersection point of the carcass layer 23, the second bead filler 222, and the first bead filler 221. Even in this case, the RFID transponder 40 is located at the intersection point of three tire body elements that comprise a fiber element. Accordingly, it is possible to achieve the results listed above, such as adequate protection of the RFID transponder 40 and a reduction in the deviation of the RFID transponder 40's position.

[0120] In addition to the above points (1), (2), (5), (7) to (9) and (12), the following results are achieved by the tire 1 according to the present embodiment.

[0121] (20) In the tire 1 according to the present embodiment, the RFID transponder 40 is arranged at an intersection of the carcass layer 23 (fiber element), the second bead filler 222 (rubber element), and the first bead filler 221 (rubber element). This makes it possible to reduce the stresses generated by the rubber element while simultaneously and effectively preventing movement of the RFID transponder 40 by the fiber element. Furthermore, results such as a reduction in deviations in the arrangement position of the RFID transponder 40 are also achieved. <Siebte Ausführungsform>

[0122] Next, with reference to the Fig. Figures 11 to 17 describe a tire according to a seventh embodiment. It should be noted that in the following explanation, configurations corresponding to those of the first to third embodiments are assigned the same reference numerals, and their detailed descriptions are omitted. The present embodiment is a particularly preferred embodiment in a case where the antenna of the RFID transponder 40 is a spiral spring antenna.

[0123] For the RFID transponder 40 according to the present embodiment, a spiral spring antenna 421 with high communication capability and high elasticity can be used as the antenna. The spring antenna 421 is defined by an antenna length optimized according to the frequency band to be used, etc.

[0124] In the present embodiment, before the RFID transponder 40 is enclosed by the two rubber encasing plates 431, 432, which form the protective element 43, the rubber is arranged in the spring antenna 421. Even more preferably, the rubber is filled into the spring antenna in such a way that as little air as possible remains. This process and the reason for choosing this process are described using the Fig. Explained in sections 11 to 17.

[0125] First, as a reference example, the Fig. 11 to 13 the condition in the vicinity of the RFID transponder 40 is explained in a case in which no rubber was filled into the interior of the spring antenna 421. Fig. Figure 11 shows a cross-section of the spring antenna 421 and the rubber encapsulation plates 431, 432 before the RFID transponder 40 is enclosed by the rubber encapsulation plates 431, 432. Fig. Figure 12 shows a cross-section of the spring antenna 421 and the rubber encapsulation plates 431, 432 after the RFID transponder 40 has been enclosed by the rubber encapsulation plates 431, 432.

[0126] As in Fig. As shown in Figure 12, in this reference example, after encasing with the rubber encasing plates 431, 432, a certain amount of air 45 may remain inside the spring antenna 421, since no rubber was pre-filled into the spring antenna 421. If air remains in this way, the integrity of the rubber encasing plates 431, 432 and the spring antenna 421 will be insufficient, and if the tire deforms, there is a risk that the spring antenna 421 will not follow the movement of the rubber and that the RFID transponder 40 will be damaged along with the spring antenna 421.

[0127] It should be noted that raw rubber before vulcanization is used here as sheathing rubber sheets 431, 432. Accordingly, when pressure is applied to the sheathing rubber sheets 431, 432 from both sides, the sheathing rubber sheets 431, 432 protrude to a certain degree into the interior of the spring antenna, as shown in Fig. 12 shown. However, it is very time-consuming and labor-intensive to press in the rubber sheathing plates 431, 432 until the interior of the spring antenna is completely embedded.

[0128] Even assuming a case in which time is spent pressing in the rubber plates until the interior of the spring antenna is embedded, the distance L between the outer circumferential section of the spring antenna 421 and the outer surface of the encasing rubber plates 431, 432 will then be very small, as shown in Fig. Figure 13 shows that stabilizing this distance L is difficult, and locally thin sections can occur. Consequently, the protection of the RFID transponder 40 by the encapsulating rubber sheets 431, 432 becomes insufficient, and there is a possibility that the encapsulating rubber sheets 431, 432 will be damaged during vulcanization.

[0129] Therefore, in the present embodiment, the rubber is arranged in the spring antenna 421 before the RFID transponder 40 is enclosed by the rubber encasing plates 431, 432, as shown in Fig. Figures 14 to 17 are shown. Even better, the rubber is filled into the spring antenna in such a way that as little air as possible remains. It should be noted that the figures on the right-hand sides of the Fig. Views 14 to 17 are shown as a transverse section of the spring antenna 421 and its surroundings.

[0130] Fig. Figure 14 shows a state before the rubber 46 was filled into the spring antenna 421, and Fig. Figure 15 shows a state after the rubber 46 has been filled into the spring antenna 421. The rubber 46 is embedded such that it has approximately the same outer diameter as the outer circumferential surface of the spring antenna 421. In the event that the rubber 46 protrudes from the outer circumferential surface of the spring antenna 421, it is preferable to strip off this section. In other words, the outer circumferential surface of the rubber 46 is preferably shaped so that it becomes substantially the same surface as the outer circumferential surface of the spring antenna 421. It should be noted that the rubber 46 can be filled into the spring antenna 421 and that the outer circumference of the spring antenna 421 can be thinly covered with the rubber 46.If, on the other hand, the spring antenna 421 is thickly encased in the rubber 46, in addition to impairing the elasticity of the spring antenna 421, the dimensions developed by the encasing rubber plates 431, 432 after enclosing the RFID transponder 40 will increase in the lateral direction, which is not advantageous. It should be noted that the rubber 46 can be embedded such that it assumes essentially the same outer diameter as the inner circumferential surface of the spring antenna 421. It is desirable that the outer circumferential section of the rubber 46 be located within the area of ​​the inner circumferential surface and the outer circumferential surface of the spring antenna 421.

[0131] To ensure the elasticity of the spring antenna 421, a rubber with elasticity is used as rubber 46. However, considering processability, etc., the use of rubber with a modulus higher than that of the cladding rubber sheets 431, 432 is preferable as rubber 46. It should be noted that preferably unvulcanized rubber is used as rubber 46, which is arranged inside the spring antenna 421. By manufacturing the rubber 46 and the cladding rubber sheets 431, 432 as unvulcanized rubber and simultaneously vulcanizing them, the integrity of the rubber 46, the cladding rubber sheets 431, 432, and the spring antenna 421 is increased. Furthermore, the rubber 46 and the cladding rubber sheets 431, 432 are even more preferably manufactured from the same type of rubber.It should be noted that rubber with a lower modulus than that of the sheathing rubber sheets 431, 432 can be used as rubber 46 if particular importance is placed on the elasticity of the spring antenna 421. Furthermore, rubber with essentially the same modulus and made of the same material can be used. It should be noted that vulcanized rubber can be used as rubber 46 arranged in the spring antenna 421. In addition, rubber-based adhesives, rubber-based fillers, etc., can also be used. If a configuration is required in which as little air as possible remains in the spring antenna 421 while simultaneously ensuring elasticity, various rubber-based materials can be used.Various methods can be used to arrange the rubber 46; however, it is also possible, for example, to inject the rubber into the spring antenna 421 using a syringe. In this case, a controlled, suitable quantity of the rubber 46 can be injected using a syringe. Furthermore, after injecting a large quantity of the rubber 46, sections can be stripped off that protrude beyond the outer circumference of the spring antenna 421.

[0132] Fig. Figure 16 shows a state before the RFID transponder 40, in whose spring antenna 421 the rubber 46 was filled, was encased with the encasement rubber plates 431, 432, and Fig. Figure 17 shows a view of the condition after encasing with the rubber encasing plates 431, 432.

[0133] As in Fig.As shown in Figure 17, in the present embodiment there are no air inclusions between the rubber cladding plates 431, 432, since the rubber 46 is pre-filled into the spring antenna 421. Since concerns regarding air inclusions are thus eliminated, the process of encasing the RFID transponder 40 with the rubber cladding plates 431, 432 is also simplified. Furthermore, the rubber 46 arranged within the spring antenna 421 increases the integrity of the spring antenna 421, the rubber 46, and the rubber cladding plates 431, 432, and in the event of tire deformation, the spring antenna 421 follows the movement of the rubber. Accordingly, the durability of the RFID transponder 40 with the spring antenna 421 is also improved.

[0134] Furthermore, in the present embodiment, the distance L between the outer circumferential section of the spring antenna 421 and the outer circumferential surface of the rubber sheathing plates 431, 432 is stabilized. In other words, a distance L close to the thickness of the rubber sheathing plates 431, 432 is generally ensured. Accordingly, the RFID transponder 40 is adequately protected by the rubber sheathing plates 431, 432. In the present embodiment, the RFID transponder 40, enclosed by the rubber sheathing plates 431, 432, is firmly inserted between tire body elements, and the tire blank is then vulcanized.

[0135] It should be noted that in the present embodiment, the RFID transponder 40, in which rubber 46 has been pre-filled into the spring antenna 421, is enclosed by the rubber encasing plates 431, 432 and then arranged between tire body elements. However, the RFID transponder 40, in which rubber 46 has been pre-filled into the spring antenna 421, can also be arranged between tire body elements without being enclosed by the rubber encasing plates 431, 432. By arranging the unencased RFID transponder 40 directly between the tire body elements, the variation in the thickness of the rubber element in a section where the RFID transponder 40 is interposed is reduced, thereby improving the uniformity of the tire 1. Furthermore, since the rubber 45 is pre-filled into the spring antenna 421, the rubber plate 37 does not sink excessively into the spring antenna.

[0136] In addition to the above points (1) to (20), the tire according to the present embodiment achieves the following results.

[0137] (21) In the present embodiment, the RFID transponder 40, as an electronic unit with communication function, includes the spring antenna 421, and prior to the step of adhering the RFID transponder 40 to a tire body element, a step of arranging the rubber 46 in the spring antenna 421 is included. The assembly properties are advantageous in the step of arranging the spring antenna 421 of the RFID transponder 40 between rubber elements, as concerns regarding air inclusions are eliminated.

[0138] (22) In the present embodiment, the following steps are provided: one for arranging the rubber 46 inside the spring antenna 421 of the RFID transponder 40, which serves as an electronic unit with a communication function; one for encasing the RFID transponder 40 with the spring antenna 421, in which the rubber 46 is arranged, with the encasing rubber plates 431, 432; and one for arranging the RFID transponder 40, enclosed by the encasing rubber plates 431, 432, between tire body elements. This eliminates any air 45 inside the spring antenna 421. Furthermore, since concerns regarding air inclusions are eliminated, the process of enclosing the RFID transponder 40 with the encasing rubber plates 431, 432 is simplified.Furthermore, since the distance L between the outer circumferential section of the spring antenna 421 and the outer surface of the rubber plates 431, 432 is stabilized, the RFID transponder 40 is adequately protected by the encasing rubber plates 431, 432.

[0139] (23) The present embodiment comprises: a step of arranging the rubber 46 inside the spring antenna 421 of the RFID transponder 40, which serves as an electronic unit with communication function; and a step of adhering the rubber sheet 37 to the bead filler 22 such that the unenclosed RFID transponder 40 is positioned between tire body elements. By directly positioning the unenclosed electronic unit between tire body elements, the variation in the thickness of the rubber element at the section where the RFID transponder 40 is inserted is reduced, thereby improving the uniformity of the tire. Furthermore, since the rubber 46 is pre-filled into the spring antenna 421, the rubber sheet 37 does not sink excessively into the spring antenna.

[0140] Furthermore, the tire 1 according to the embodiments of the present invention also comprises the following configuration. A tire 1 according to a first aspect of the present invention corresponds to a tire having the features disclosed in independent claim 1.

[0141] According to a second aspect of the present invention, the electronic unit 40 is arranged between the carcass layer 23 and the bead filler 22 in the tire described under the first aspect.

[0142] According to a third aspect of the present invention, in the tire described under the second aspect, an annular plate 37 is provided near a folded end of the carcass layer 23, and the electronic unit 40 is arranged on an inner side of the annular plate 37 in the radial direction of the tire.

[0143] According to a fourth aspect of the present invention, in the tire described under the third aspect, the electronic unit 40 is configured such that it is in contact with an outer end of the first bead filler 221 and the carcass layer 23 in the radial direction of the tire.

[0144] According to a fifth aspect of the present invention, in the tire described under the first aspect, the electronic unit 40 is configured such that it is in contact with an outer end of the second bead filler 222 in the radial direction of the tire.

[0145] According to a sixth aspect of the present invention, the electronic unit 40 is arranged between the carcass layer 23 and the inner lining 29 in the tire described under the first aspect.

[0146] According to a seventh aspect of the present invention, the tire described under the first aspect may further comprise: a steel bead strip 31 comprising a steel cord that encloses the bead core 21 and the carcass layer 23, wherein the electronic unit 40 is arranged such that it is located near or in contact with an inner end of the steel bead strip 31 in the direction of the width of the tire.

[0147] According to an eighth aspect of the present invention, the padding rubber in the tire described under the first aspect comprises a sidewall pad 38 which is provided between the carcass layer 23 and the belt 26, wherein the electronic unit 40 is designed to be in contact with the sidewall pad 38 and at least either the carcass layer 23 or the belt 26.

[0148] According to a ninth aspect of the present invention, the electronic unit 40 is arranged between the carcass layer 23 and the sidewall rubber 30 in the tire described under the first aspect.

[0149] According to a tenth aspect of the present invention, in the tire described under the first aspect, the electronic unit 40 is arranged between the first bead filler 221 and the carcass layer 23.

[0150] According to an eleventh aspect of the present invention, in the tire described under the first to tenth aspects, a longitudinal direction of the electronic unit 40 extends along the circumferential direction of the tire.

[0151] According to a twelfth aspect of the present invention, at least part of the electronic unit 40 in the tire described under the first to eleventh aspects is coated with rubber.

[0152] It should be noted that the tire according to the invention, although it can be used for different types of tires such as for cars, light trucks, trucks and buses, is particularly well suited as a tire for a truck, a bus, etc. EXPLANATION OF REFERENCE SYMBOLS 1 tire 11 bulge 12 Running surface 13 Side wall 21 bead core 22 Bead fillers 22A outer end in the radial direction of the tire 221 first bead filler 222 second bead filler 23 Carcass layer 24-layer main body 25 layer bending section 26 steel belts (belts) 28 tread rubber 28B in the radial direction of the tire inner end 29 Interior lining 30 side wall rubber 31 steel bead band 32 rim tape rubber 32B End section 34 Upholstery element (upholstery rubber) 35 first padding (first padding rubber) 36 second padding (second padding rubber) 36A outer end in the radial direction of the tire 36B in the radial direction of the tire inner end 37 Rubber plate (ring-shaped plate) 38 Side pads (pad rubber) 38A in the direction of the width of the tire inner end 38B in the radial direction of the tire inner end 40 RFID transponders (electronic unit) 41 RFID chips 42 Antenna 421 Spring antenna 43 Protective element 431, 432 Rubber sheet 46 Rubber

Claims

[1] Tire (1) comprising: tire body elements comprising bead cores (21), a bead filler (22), an inner liner (29), a sidewall rubber (30) and a cushion rubber (34, 38); and an electronic unit (40) provided at a connecting surface of the tire body elements, wherein the electronic unit (40) is an RFID transponder and is arranged between the tire body elements; and a carcass ply (23) extending from one bead core (21) to another bead core (21) and comprising a rubber-coated reinforcing cord or belt (26) provided on an outer side of the carcass ply (23) in a radial direction of the tire, wherein the cushioning rubber (34, 38) comprises a cushion (34) and a side cushion (38), wherein the pad (34) is arranged on an outer side in the radial direction of the tire of a folded-over end of the carcass ply (23), wherein the electronic unit (40) is arranged between the carcass layer (23) and the pad (34) such that the electronic unit (40) is in contact with an outer side of the bead filler (22) in the radial direction of the tire, wherein the bead filler (22) comprises a first bead filler (221) which surrounds the bead core (21) and a second bead filler (222) which is arranged on an outer side of the first bead filler (221) in the radial direction of the tire (1), and wherein the pad (34) is made of rubber with a higher modulus than the modulus of the second bead filler (222), wherein the side wall rubber (30) is specified with a module of 0.4 to 0.7 times the module of the side padding (38), wherein the cushion (34) is formed by a first cushion (35) and a second cushion (36), wherein the electronic unit (40) is in contact with the second cushion (36), and the electronic unit (40) is held on the carcass layer (23). [2] Tire (1) according to claim 1, wherein the electronic unit (40) is arranged between the carcass layer (23) and the bead filler (22). [3] Tire (1) according to claim 2, wherein an annular plate (37) is provided near a folded end of the carcass layer (23) and the electronic unit (40) is arranged on an inner side of the annular plate (37) in the radial direction of the tire. [4] Tire (1) according to claim 3, wherein the electronic unit (40) is designed to be in contact with an outer end in the radial direction of the tire of the first bead filler (221) and the carcass layer (23). [5] Tire (1) according to claim 1, wherein the electronic unit (40) is designed to be in contact with an outer end of the second bead filler (222) in the radial direction of the tire. [6] Tire (1) according to claim 1, wherein the electronic unit (40) is arranged between the carcass layer (23) and the inner lining (29). [7] Tire (1) according to claim 1, further comprising a steel bead band (31) comprising a steel cord that encloses the bead core (21) and the carcass ply (23), wherein the electronic unit (40) is arranged such that it is located near or in contact with an inner end of the steel bead band (31) in the direction of the width of the tire. [8] Tire (1) according to claim 1, wherein the sidewall pad (38) is provided between the carcass layer (23) and the belt (26), and wherein the electronic unit (40) is configured to be in contact with the sidewall pad (38) and at least either the carcass layer (23) or the belt (26). [9] Tire (1) according to claim 1, wherein the electronic unit (40) is arranged between the carcass layer (23) and the sidewall rubber (30). [10] Tire (1) according to claim 1, wherein the electronic unit (40) is arranged between the first bead filler (221) and the carcass layer (23). [11] Tire (1) according to any one of claims 1 to 10, wherein a longitudinal direction of the electronic unit (40) extends along the circumferential direction of the tire. [12] Tire (1) according to any one of claims 1 to 11, wherein at least part of the electronic unit (40) is coated with rubber.

Images