WO2021117314A1 - Étiquette rfid, pneumatique ayant une étiquette rfid comprise en son sein, et procédé de fabrication d'une étiquette rfid - Google Patents

Étiquette rfid, pneumatique ayant une étiquette rfid comprise en son sein, et procédé de fabrication d'une étiquette rfid Download PDF

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Publication number
WO2021117314A1
WO2021117314A1 PCT/JP2020/036192 JP2020036192W WO2021117314A1 WO 2021117314 A1 WO2021117314 A1 WO 2021117314A1 JP 2020036192 W JP2020036192 W JP 2020036192W WO 2021117314 A1 WO2021117314 A1 WO 2021117314A1
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WO
WIPO (PCT)
Prior art keywords
rubber sheet
printed circuit
rfid tag
circuit board
tire
Prior art date
Application number
PCT/JP2020/036192
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English (en)
Japanese (ja)
Other versions
WO2021117314A8 (fr
Inventor
詩朗 杉村
Original Assignee
株式会社フェニックスソリューション
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Application filed by 株式会社フェニックスソリューション filed Critical 株式会社フェニックスソリューション
Publication of WO2021117314A1 publication Critical patent/WO2021117314A1/fr
Publication of WO2021117314A8 publication Critical patent/WO2021117314A8/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details

Definitions

  • the present invention relates to an RFID tag, a tire with a built-in RFID tag, and a method for manufacturing the RFID tag.
  • Patent Document 1 (Re-Table 2007-083574) describes a power supply circuit board, a power supply circuit board connected to the wireless IC chip, and provided with a power supply circuit including a resonance circuit having a predetermined resonance frequency, and a power supply circuit board. Is attached or placed close to each other, and includes a radiation plate that emits a transmission signal supplied from the power supply circuit and / or receives a reception signal and supplies the reception signal to the power supply circuit. A wireless IC device is disclosed, wherein the frequency of the above substantially corresponds to the resonance frequency of the resonance circuit.
  • Patent Document 2 Japanese Unexamined Patent Publication No. 2011-097586
  • the electronic tag is connected to and stored in an electronic device that stores unique data of the article.
  • a type of tag that has an antenna for transmitting the data to a remote reader device, where some parts of the article consist of, at least in part, a material composition containing rubber, and the electronic device and antenna are of the article.
  • An assembly that is attached to a portion and has external contact means, the antenna is flexible and consists of at least partially flexible conductive material, the flexible conductive material at least partially containing conductive rubber. Is described.
  • Patent Document 3 Japanese Unexamined Patent Publication No. 2017-132291
  • the antenna is connected to a first antenna connected to the RFID chip and the outside of the first antenna. It is composed of a second antenna provided in the above and electromagnetically coupled to the first antenna, the RFID chip and the first antenna are fixed to the first fixing member, and the RFID tag is attached to the carcass ply end of the tire.
  • a passive radio frequency identification transponder (hereinafter, also referred to as an RFID tag).
  • Tires can be managed by attaching the transponder to the tire and writing or reading information about the tire to the transponder. For example, for tires for vehicles such as automobiles, manufacturing management, distribution management, maintenance management during tire use, manufacturing management of retread tires in which worn tread parts have been rehabilitated after the end of the primary life, and maintenance management thereof, etc. In, it is necessary to grasp the unique information of each tire such as its specifications, manufacturing history, and usage history.
  • the distortion in the tire generated when the vehicle is running is concentrated on the boundary surface between the covering rubber covering the electronic component such as the RFID tag and the adjacent member, and as a result, a crack is generated between the electronic component and the adjacent member. There is a risk and problems arise.
  • the viewpoint of improving durability if a large amount of carbon black is blended in the coating rubber that coats the electronic component, the communication performance of the RFID tag attached to the tire may be affected and communication may not be performed well.
  • the RF chip is placed in the center of the dipole antenna, so when the tire expands and contracts significantly, the joint between the RF chip and the two antenna wires connected to both ends of the RF chip is damaged. There is also the problem that communication will not be possible.
  • a feeding circuit including a resonance circuit having a predetermined resonance frequency is arranged between the wireless IC chip and the radiation plate, and the frequencies of the transmission signal and / or the reception signal are resonated. It is configured so as to substantially correspond to the resonance frequency of the circuit.
  • the radiation plate is electromagnetically coupled and / or capacitively coupled to the feeding circuit (see the first embodiment, FIGS. 1 to 7), the signal source impedance of the radiation plate is high, and the wireless IC device is carbon black.
  • the assembly of the article body such as the tire rubber of the invention described in Patent Document 2 and the electronic tag is mechanically incorporated into the article by using a flexible conductive material containing conductive rubber at least partially for the antenna. It is suitable for.
  • a flexible conductive material containing conductive rubber at least partially for the antenna.
  • characteristics such as the communicable distance of the wireless IC device are easily affected by the impedance of the carbon black and the relative permittivity of the rubber product, and the conductivity.
  • the antenna is made of rubber, there is a problem that the resistance component is larger than that of the metal antenna.
  • the RFID tag built-in tire of the invention described in Patent Document 3 electromagnetically couples a first antenna connected to the RFID chip and a second antenna provided outside the first antenna, and also has a second antenna.
  • This is an RFID tag built-in tire in which the antenna of the above is electromagnetically coupled with a conductive carcass ply cord.
  • the first antenna and the second antenna are electromagnetically coupled and the signal source impedance of the second antenna is high, when the RFID tag is embedded in a rubber product containing carbon black, There is a problem that characteristics such as the communication range of RFID tags are easily affected by the impedance of carbon black and the relative permittivity of rubber products.
  • a main object of the present invention is to provide an RFID tag which is less affected by carbon black contained in a tire and the relative permittivity of the tire and has excellent communication characteristics even when used by being attached or embedded in a tire. It is to be.
  • a second object of the present invention is to provide an RFID tag that can be easily attached to or embedded in a tire.
  • a third object of the present invention is to provide an RFID tag having improved durability while maintaining or improving the communication performance of the RFID tag, and to provide a method for manufacturing the RFID tag.
  • An RFID tag includes an RF chip, a first element formed by braiding a conductor, a second element, a coupling transformer, and a printed circuit board, and a guide portion is provided on the printed circuit board.
  • One element is arranged in the guide portion and extends from the printed circuit board, the first element is connected to one end on the primary side of the coupling transformer, and the second element is connected to the other end on the primary side of the coupling transformer.
  • the RF chip is connected to the secondary side of the coupling transformer, and the number of windings on the primary side of the coupling transformer is smaller than the number of windings on the secondary side.
  • the primary side to which the first element and the second element are connected is input with low impedance, and 2
  • the next side can be converted to high impedance to match the input impedance of the RF chip.
  • the guide portion provided on the printed circuit board stabilizes the positional relationship between the printed circuit board and the first element.
  • the first element is formed of the braided wire (knitted copper wire, braided wire) of the conductor, even if the tire is greatly deformed, all the braided wires will not be broken at once, so that communication is maintained. It can be made and has excellent durability.
  • the RFID tag of the present invention When the RFID tag of the present invention is attached to a rubber product such as a tire, the rubber product such as a tire is grounded by electrically connecting the second element to the rubber product such as a tire having an impedance. Because it functions as, it is possible to communicate with high sensitivity. Therefore, when attached to a rubber product such as a tire, an RFID tag having excellent communication characteristics can be obtained.
  • the RFID tag according to the second invention is an RFID tag according to one aspect, in which a guide portion is provided on the first surface of the printed circuit board, the second element is provided on the first surface of the printed circuit board, and the RF chip and the coupling transformer are provided. It is provided on the second surface of the printed circuit board, and the guide portion is provided with a plurality of through holes for connecting the first surface and the second surface of the printed circuit board, and the first element is the primary element of the coupling transformer through the through holes. Connected to one end on the side, one side end and the other side end of the first element extend outward from the end face of the printed circuit board, and the extension length of the other end is 1 of the total length of the first element. It may be 1/10 or less.
  • the antenna of the RFID tag uses the second element as the ground plane and the second element.
  • the operation is similar to that of a monopole antenna with one element as the antenna wire, and it shows good characteristics as an antenna.
  • the ground plane is further strengthened by electrically connecting the second element to the vulcanized rubber tire.
  • each member can be arranged on the printed circuit board at a high density, the size of the printed circuit board can be effectively reduced. As a result, it is possible to obtain an RFID tag that is hard to be damaged or peeled off and has excellent durability even when attached to a rubber product such as a tire that is deformed.
  • the RFID tag according to the third invention is the RFID tag according to the first aspect or the second invention, in which the second element is formed of a rectangular conductor and the surface is exposed on the surface of the printed circuit board. The next side and the RF chip may be sealed with a resin layer.
  • the impedance between the second element and the vulcanized rubber tire can be lowered when the RFID tag is attached to or embedded in the vulcanized rubber tire. it can. Further, by sealing the secondary side of the coupling transformer and the RF chip with a resin layer, the physical strength of the RFID tag can be increased.
  • the electric length of the first element is ⁇ / 4, ⁇ . It may be / 2, (3/4) ⁇ , (5/8) ⁇ .
  • the resonance frequency of the first element matches the communication frequency of the RFID tag.
  • the communication distance of the RFID tag can be extended.
  • the RFID tag according to the fifth invention is the RFID tag according to the fourth aspect to the fourth aspect.
  • the guide portion for arranging the first element at a fixed position may be provided with a rail-shaped groove on the printed circuit board.
  • the impedance is converted in proportion to the square of the winding number ratio of the coupling transformer.
  • the impedance on the primary side of the coupling transformer that is, between the first and second elements is 100 ⁇
  • the number of windings on the secondary side is four times the number of windings on the primary side
  • the coupling transformer The impedance on the secondary side of is 1.6 k ⁇ . Therefore, the ratio of the number of windings of the coupling transformer is basically set so that the input impedance of the RF chip and the impedance between the first and second elements are matched.
  • increasing the number of windings on the secondary side has restrictions such as the area of the coupling transformer, and the ratio of the number of windings on the secondary side to the primary side is from 3: 1 to 6: 1. It is desirable to be between. ..
  • the RFID tag according to the sixth invention is the RFID tag according to the fifth aspect to the fifth invention, in which four terminals are provided on the secondary side of the coupling transformer, and the RF chip is sealed in a BGA package to form the coupling transformer. It is placed on the surface of the secondary side, and depending on the placement angle of the RF chip, the terminal of the RF chip and one of the two terminals of the four terminals or the other two terminals are connected, and the RF chip is formed.
  • the number of windings on the secondary side of the coupling transformer may be different depending on whether the transformer is connected to one of the two terminals or the other two terminals.
  • the winding number ratio of the coupling transformer can be changed simply by changing the arrangement angle of the same RF chip using the same printed circuit board. Therefore, for example, when it is desired to change the impedance on the primary side of the coupling transformer depending on the material of the rubber of the tire to be attached or embedded, the impedance on the primary side is changed by changing the arrangement angle of the RF chip. There is an advantage that it can be done.
  • the RFID tag according to the seventh invention further includes a first insulator and a second insulator laminated on the printed circuit board in the RFID tag according to the first aspect to the sixth invention, and includes the first insulator, the printed circuit board, and the RFID tag.
  • the second insulator is laminated in this order, and the second element may be electrically connected to the tire via the second insulator.
  • the printed circuit board is coated with the first insulator and the second insulator, so that even when the tire rubber expands and contracts, such as when the automobile is running, the printed circuit board is fixed to the groove of the first element formed by the braided wire. And the conductive connection with the through hole can be stabilized. Therefore, the durability of the RFID tag is increased. Further, since the first element formed by the braided wire of the conductor is also covered, the braided wire is not easily deformed even when it is attached to the tire, so that the RFID tag can be easily attached and has excellent communication characteristics. Further, by covering the first element with the first insulator, it is possible to obtain an RFID tag whose antenna length is not easily affected by the dielectric constant of the rubber of the tire.
  • the second insulator may be a butyl rubber sheet in the RFID tag according to the seventh invention.
  • the first element can be stably fixed.
  • butyl rubber has excellent adhesion to vulcanized rubber and maintains adhesion even when subjected to vibration, expansion or contraction or thermal shock for a long period of time, so it can be used as an RFID tag that does not easily peel off even when attached to the rubber surface of a tire. can do.
  • the communication characteristics of the RFID tag when the RFID tag is attached to the tire or embedded in the tire can be confirmed. There is also the advantage of being able to.
  • the second element is electrically connected to the tire via the second insulator, the second element and the tire can be electrostatically coupled. Therefore, it is possible to obtain an RFID tag having improved durability while maintaining or improving the communication performance of the RFID tag.
  • the material of the first insulator and the second insulator may be the same material as the tire in the RFID tag according to the seventh invention.
  • the first insulator and the second insulator are made of the same material as the tire, they can be easily embedded with the tire. Further, in the case of vulcanization, it can be embedded and integrated.
  • the RFID tag according to the tenth invention may be used for sticking to the inside of a tire or embedding it in the rubber of a tire in the RFID tag according to the ninth aspect to the ninth aspect.
  • the tire can be managed by the function of the RFID tag.
  • the RFID tag built-in tire according to the eleventh invention may have the RFID tag according to the tenth invention from one aspect attached to the inside of the tire or embedded in the rubber of the tire.
  • the tire can be managed by the function of the RFID tag.
  • the method for manufacturing an RFID tag according to the twelfth invention includes a braided roll, a butyl rubber roll, a tag stacker, a second rubber roll, an idler, and a cutter to provide an RFID tag according to the eighth invention.
  • This is a manufacturing method in which the knitted wire sent from the braided roll is superposed on the butyl rubber sheet sent out from the butyl rubber roll, and the knitted wire is arranged on the guide portion of the printed substrate by a tag stacker to form the knitted wire.
  • a step as the first element a step of arranging the second rubber sheet sent from the second rubber roll on the printed substrate on which the braids on the butyl rubber sheet are arranged, the butyl rubber sheet, the printed substrate, and the first
  • a step of crimping the 1 element and the second rubber sheet through an idler and a step of cutting and individualizing the RFID tag that has been crimped and integrated with the butyl rubber sheet and the second rubber sheet.
  • the arrangement of the braided wire as the first element on the printed circuit board, the adhesion of the butyl rubber sheet, the printed circuit board on which the braided wire is arranged, and the second rubber sheet, and the individualization of the adhered RFID tag. Can be performed in a continuous assembly line.
  • the printed circuit board according to the twelfth invention is equipped with a second element, a coupling transformer, and an RF chip.
  • the method for manufacturing an RFID tag according to a thirteenth invention comprises a tag supply roll, an idler, and a take-up roll instead of a tag stacker in the method for manufacturing an RFID tag according to the twelfth invention, from a butyl rubber roll.
  • the braided wire sent from the braided roll and the printed circuit board in the taped state sent out from the tag supply roll are superposed on the sent butyl rubber sheet, and the braided wire is arranged on the guide portion of the printed circuit board with an idler. It may include a step in which the braided wire is the first element.
  • the RFID tag can be manufactured using the printed circuit board in the taping state.
  • a first rubber sheet is sent out from a roll around which a first rubber sheet made of a butyl rubber sheet is wound, and is sent out from a braided roll onto the first rubber sheet.
  • the step of stacking the second rubber sheet sent from the second rubber sheet roll, the first rubber sheet, the printed substrate, the braided wire, and the second rubber sheet are laminated in this order. It includes a step of pressurizing the body and a step of cutting the laminated body.
  • the arrangement of the braided wire on the printed circuit board, the adhesion of the butyl rubber sheet, the printed circuit board on which the braided wire is arranged, and the second rubber sheet, and the individualization by cutting the adhered RFID tag. can be performed in a continuous assembly line.
  • the step of stacking a printed circuit board on a first rubber sheet is performed from a stacker in which a plurality of printed circuit boards are laminated.
  • the step of sequentially supplying the printed circuit board onto the butyl rubber sheet may be included.
  • the RFID tag can be performed in a sheet-like continuous assembly line, it can be a highly productive method for manufacturing the RFID tag.
  • the step of stacking the printed circuit board on the first rubber sheet causes the printed circuit board to be intermittently attached.
  • the step of transferring the printed circuit board to the butyl rubber sheet by stacking the tape on the butyl rubber sheet and crimping it may be included.
  • the RFID tag can be manufactured using the printed circuit board in the taping state. Moreover, mass production can be easily realized.
  • the method for manufacturing an RFID tag according to the seventeenth invention includes a braided roll, a butyl rubber roll, a tag stacker, a second rubber roll, an idler, and a cutter, and comprises the RFID tag according to the eighth invention.
  • the arrangement of the braided wire as the first element on the printed circuit board, the adhesion of the butyl rubber sheet, the printed circuit board on which the braided wire is arranged, and the second rubber sheet, and the individualization of the adhered RFID tag. Can be performed in a continuous assembly line.
  • the printed circuit board according to the seventeenth invention is equipped with a second element, a coupling transformer, and an RF chip.
  • a first rubber sheet is sent out from a roll around which a first rubber sheet made of a butyl rubber sheet is wound, and a second rubber sheet of a printed circuit board is placed on the first rubber sheet.
  • the step of stacking the second rubber sheet sent from the second rubber sheet roll on the first surface, the first rubber sheet, the printed circuit board, the braided wire, and the second rubber sheet are laminated in this order. It includes a step of pressurizing the laminated body and a step of cutting the laminated body.
  • the RFID tag can be performed in a sheet-like continuous assembly line, it can be a highly productive method for manufacturing the RFID tag.
  • the RFID tag is the RF chip, the second element, the printed circuit board provided with the rail-shaped groove, and the first element formed by the braided wire of the conductor, which is arranged in the groove of the printed circuit board.
  • the first element is connected to one end on the primary side
  • the second element is connected to the other end on the primary side
  • the RF chip is connected to the secondary side
  • the number of windings on the primary side is increased. It includes a coupling transformer, which is smaller than the number of windings on the secondary side.
  • FIG. 5 is a schematic drawing showing a connection between an RF chip and a secondary side of a coupling transformer when the RF chip is arranged at a second angle orthogonal to the first angle.
  • FIG. 5 is a schematic cross-sectional view of a rubber-coated RFID tag viewed from the side, in a state where the RFID tag is sandwiched between a butyl rubber sheet and a second rubber sheet. It is a figure which shows an example of the frequency characteristic of the communicable distance of an RFID tag measured by sticking a rubber-coated RFID tag on the inside of a tire. It is a schematic cross-sectional view which shows the state which attached the rubber-coated RFID tag to the inside of a tire. It is a schematic diagram which shows an example of the manufacturing line of a rubber-coated RFID tag.
  • FIG. 1 It is a schematic drawing which shows a part of the production line in the case of manufacturing a rubber-coated RFID tag using an RFID tag in a taping state. It is a schematic cross-sectional view which shows the other example of FIG. It is a schematic diagram which shows another example of the production line of a rubber-coated RFID tag. It is a schematic diagram of a frequency and a communication distance when an RFID tag is attached to a tire.
  • FIG. 1 is a schematic front view of the RFID tag 100 as viewed from the first surface 91 side of the printed circuit board 90, and the RFID tag 100 including the first element 50, the second element 60, and the printed circuit board 90 of the antenna. Is shown.
  • FIG. 2 is a schematic plan view seen from the first surface 91 side of the printed circuit board 90
  • FIG. 3 is a schematic rear view seen from the second surface 92 side of the printed circuit board 90
  • FIG. 4 is FIG. It is a schematic cross-sectional view when the printed circuit board 90 is cut along the aa'line.
  • FIG. 5 is an equivalent circuit diagram of the RFID tag 100.
  • a rail-shaped groove 65 (see FIG. 4) is formed on the first surface 91 of the printed circuit board 90 formed in a rectangular parallelepiped shape, and a rectangle is formed on the first surface 91 of the printed circuit board 90.
  • a second element 60 formed of a rectangular parallelepiped conductor is provided.
  • a plurality of through holes 70 are provided at the bottom of the groove 65. The plurality of through holes 70 can be provided at appropriate intervals. In this embodiment, five through holes 70 are provided, but two or more are preferable, and four or more are more preferable.
  • a first element 50 formed by braiding a conductor is arranged in the groove 65.
  • the fact that the first element 50 is arranged in the groove 65 does not matter as long as the first element 50 and the through hole 70 are electrically connected.
  • the first element 50 having deformability may be press-fitted into the groove 65, and the first element 50 is arranged in the groove 65 and a part of the butyl rubber sheet 120 enters the groove 65 to enter the first element.
  • the 50 and the through hole 70 may be electrically connected, or may be capacitively coupled.
  • the first element 50 is arranged in the groove 65, and one side end portion and the other side end portion of the first element 50 are in a state of extending outward from the printed circuit board 90.
  • the extended length of one side end is about 1/10 of the total length of the first element 50, and the extended length of the other side end is about 4/5 of the total length of the first element 50. is there.
  • the extending direction of the other end of the first element 50 is substantially along the longitudinal direction of the printed circuit board 90.
  • First element 50 As the braided wire used for the first element 50, a wire (including a net wire) formed by knitting an arbitrary metal wire such as a copper wire, an iron wire, and a brass wire can be used. In addition, other flexible and conductive metal materials (eg, tape-like, ribbon-like, etc.) can also be used. Since the braided wire is composed of a set of a plurality of metal wires, the components of the butyl rubber sheet 120 (see FIG. 9) permeate into the inside of the braided wire, the braided wire is integrated with the butyl rubber sheet 120, and the RFID tag 100 is formed. It is possible to reliably prevent peeling from the butyl rubber sheet 120 and the tire 160 (see FIG. 11).
  • the first element 50 can be bent, twisted, deformed, and the like. Therefore, when the tire 160 is deformed or vibrated, the first element 50 follows the deformation and vibration of the tire 160, so that the first element 50 is prevented from being broken and the connection portion with the printed circuit board 90 is formed. Peeling is also suppressed.
  • the second element 60 can be formed of a metal pattern, a metal foil, a metal plate, or the like.
  • the surface of the second element 60 is exposed on the surface of the printed circuit board 90 in order to lower the impedance with the tire 160.
  • the size of the second element 60 is not limited, but in the case of the present embodiment, it has a rectangular shape of about 5.5 mm ⁇ 2.5 mm.
  • the shape of the second element 60 does not necessarily have to be rectangular, and may be, for example, circular.
  • the area of the second element 60 is preferably 3 mm 2 or more, and more preferably 5 mm 2 or more.
  • the RF chip 10 and the coupling transformer 20 are provided on the second surface 92 of the printed circuit board 90.
  • the two terminals on the primary side 30 of the coupling transformer 20 are the first element 50 and the second element, respectively, via the through holes 70 provided at the bottom of the groove 65 and the through holes 80 provided at the printed circuit board 90. It is connected to 60. Further, the two terminals of the secondary side 40 of the coupling transformer 20 are respectively connected to the terminals of the RF chip 10 by wire bonds.
  • the side 30 and the secondary side 40 of the coupling transformer 20 are both provided on the second surface 92 of the printed circuit board 90 will be described, but the present invention is not limited to this.
  • the side 30 and the secondary side 40 may be provided on different surfaces of the printed circuit board 90 to form a coupling transformer 20, or a plurality of printed circuit boards 90 may be laminated and provided on different layers.
  • the RF chip 10 is adhered to the surface of the secondary side 40 of the coupling transformer 20 or to the printed circuit board 90 by an adhesive such as an epoxy-based die bond material. Further, the secondary side 40 of the coupling transformer 20 and the RF chip 10 are sealed with a resin layer.
  • a resin layer an insulating resin such as an epoxy resin, an acrylic resin (a resin containing an acrylic resin and a derivative as a main component), and a urethane resin can be used.
  • the RF chip 10 a commercially available product that is generally used can be used, and it is particularly preferable to use one that has resistance to a vulcanization temperature of about 120 ° C.
  • the RFID tag 100 of the present embodiment is usually attached to the tire 160 in a state of being sandwiched between the first rubber sheet 120 made of a butyl rubber sheet and the second rubber sheet 130. Used with or embedded.
  • An RFID tag 100 is arranged between the first rubber sheet 120 and the second rubber sheet 130, and the first rubber sheet 120, the RFID tag 100, and the second rubber sheet 130 are laminated in this order.
  • An RFID tag (hereinafter, also referred to as a rubber-coated RFID tag 150) is formed by crimping the body and covering it with rubber.
  • the first element 50 and the first surface 91 of the printed circuit board 90 are arranged on the first rubber sheet 120 side, and the first element 50 and the second surface 92 of the printed circuit board 90 are the second rubber sheet 130.
  • the RFID tag 100 is sandwiched between the first rubber sheet 120 and the second rubber sheet 130 so as to be arranged on the side.
  • the first surface 91 of the printed circuit board 90 is coated with the first rubber sheet 120
  • the second surface 92 is coated with the second rubber sheet 130.
  • the first rubber sheet 120 used in the present invention is formed by forming a rubber composition containing butyl rubber into a sheet.
  • the first rubber sheet 120 having a predetermined size can be easily obtained by rolling the rubber composition with a roll or the like into a long sheet and cutting the sheet into a predetermined shape and size.
  • the content of butyl rubber in the first rubber sheet 120 is preferably 50% by weight or more, and is in the range of 70% by weight or more and 95% by weight or less in order to improve adhesiveness, gas permeability and the like. Is even more preferable.
  • the rubber composition can contain butyl halogenated rubber, diene-based rubber, epichlorohydrin rubber and the like.
  • diene rubber examples include natural rubber (NR), isoprene rubber (IR), styrene-butadiene copolymer rubber (SBR), acrylonitrile-butadiene rubber (NBR), and chloroprene rubber (CR). These diene rubbers may be used alone or in combination of two or more.
  • the first rubber sheet 120 further contains a compounding agent usually used in the rubber industry, for example, a reinforcing filler, a softening agent, an antiaging agent, an anti-scorch agent, zinc oxide, stearic acid, etc., depending on the purpose. It can be appropriately blended. Commercially available products can be preferably used as these compounding agents.
  • the thickness of the first rubber sheet 120 is arbitrary, but can be in the range of 5 ⁇ m or more and 500 ⁇ m or less, and particularly preferably 10 ⁇ m or more and 200 ⁇ m or less. Since the first rubber sheet 120 is usually an unvulcanized rubber sheet and has excellent adhesiveness, it can be used as an inner liner member of, for example, a pneumatic tire 160.
  • the second rubber sheet 130 is formed by forming a second rubber composition containing rubber into a sheet.
  • the second rubber sheet 130 having a predetermined size can be easily obtained by rolling the second rubber composition with a roll or the like into a long sheet and cutting the sheet into a predetermined shape and size. Can be done.
  • the type of rubber one or more of the conventionally widely used natural rubber and / or various synthetic rubbers can be appropriately selected and used.
  • the synthetic rubber examples include nitrile rubber (NBR), butadiene rubber (BR), isoprene rubber (IR), styrene butadiene rubber (SBR), butyl rubber (IIR), halogenated IIR, and ethylene propylene diene rubber (EPDM), chloroprene rubber (CR), ethylene propylene rubber, acrylonitrile butadiene rubber and the like.
  • the second rubber composition the above-mentioned first rubber composition can be used, but it is preferable that the second rubber composition contains a cross-linking agent.
  • a cross-linking agent any kind of cross-linking agent usually used for cross-linking a rubber composition can be used.
  • sulfur, organic peroxides, organic sulfur compounds and the like can be mentioned.
  • the blending amount of the cross-linking agent can be usually 0.1 parts by weight or more and 10 parts by weight or less, preferably 1 part by weight or more and 5 parts by weight or less with respect to 100 parts by weight of the rubber component.
  • various rubber additives such as a vulcanization accelerator, a filler, an oil, and an antiaging agent, which are usually used in the rubber industry, can be appropriately blended in the rubber composition.
  • the vulcanization accelerator include stearic acid, N-cyclohexyl-2-benzothiazyl sulfenamide (CZ), N, N'-dicyclohexyl-2-benzothiazolyl sulfenamide (DZ), and di-2.
  • -Benzothiazolyl disulfide (DM) and the like can be mentioned. These may be used alone or in combination of two or more.
  • the blending amount of the vulcanization accelerator can be usually 0.1 parts by weight or more and 10 parts by weight or less, preferably 1 part by weight or more and 3 parts by weight or less with respect to 100 parts by weight of the rubber component.
  • the filler examples include carbon black, silica, calcium carbonate, calcium sulfate, talc, clay, mica, zinc oxide, barium sulfate, titanium oxide and the like, and these may be used alone or in combination of two. The above can be used together.
  • the blending amount of the filler can be usually 10 parts by weight or more and 200 parts by weight or less, preferably 30 parts by weight or more and 150 parts by weight or less with respect to 100 parts by weight of the rubber component.
  • oils examples include paraffin-based, naphthen-based, aromatic process oils, ethylene- ⁇ -olefin co-oligomers, paraffin wax, liquid paraffin and other mineral oils, sesame oil, cottonseed oil, linseed oil, rapeseed oil, soybean oil, and the like. Oils such as palm oil, palm oil, vegetable oil such as peanut oil can be used. These can be used alone or in combination of two or more.
  • the blending amount of the oil can be usually 0.1 parts by weight or more and 100 parts by weight or less, preferably 1 part by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the rubber component.
  • anti-aging agent examples include naphthylamines such as phenyl- ⁇ -naphthylamine; diphenylamines such as octyldiphenylamine; N-isopropyl-N'-phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl)-.
  • P-phenylenediamines such as N'-phenyl-p-phenylenediamine, N, N'-di-2-naphthyl-p-phenylenediamine; polymers of 2,2,4-trimethyl-1,2-dihydroquinoline.
  • Kinolin type such as; 2,6-di-t-butyl-4-methylphenol, styrenated phenol, tetrakis- [methylene-3- (3', 5'-di-t-butyl-4'-hydroxyphenyl)) Propionate]
  • Examples include phenolic antioxidants such as methane.
  • the blending amount of the antiaging agent can be usually 0.1 parts by weight or more and 20 parts by weight or less, preferably 0.5 parts by weight or more and 10 parts by weight or less, based on 100 parts by weight of the rubber component. These additives may be added to the rubber composition of the first rubber sheet 120.
  • the thickness of the second rubber sheet 130 is arbitrary, but can be in the range of 5 ⁇ m or more and 500 ⁇ m or less, and particularly preferably 10 ⁇ m or more and 200 ⁇ m or less.
  • the second rubber sheet 130 contains an vulcanizing agent and is an unvulcanized rubber sheet that is cured by heating
  • the second rubber sheet 130 is usually used at 120 ° C.
  • a vulcanized sheet is obtained by this heating. This heating / vulcanization treatment is usually performed when the tire is vulcanized.
  • the rubber-coated RFID tag 150 is heated with the first rubber sheet 120 side adhered to the inner surface of the tire 160. -Vulcanization can be performed.
  • FIG. 11 is a schematic cross-sectional view showing a state in which the rubber-coated RFID tag 150 is attached to the inside of the tire 160, and shows the RFID tag built-in tire 500 in which the rubber-coated RFID tag 150 described later is attached to the tire 160. ..
  • the rubber-coated RFID tag 150 may be attached to the inside of the tire 160 or may be embedded in the rubber of the tire 160. In the present embodiment, the rubber-coated RFID tag 150 is attached to the tire 160, but the RFID tag 100 may be attached to the tire 160.
  • the tire 160 is typically a tire containing carbon black, which affects the impedance of the tire.
  • the second element 60 By attaching the RFID tag 100 or the rubber-coated RFID tag 150 to the tire 160, the second element 60 is electrically connected to the tire 160, so that the tire 160 functions as a ground of the RFID tag 100. Therefore, the RFID tag 100 or the rubber-coated RFID tag 150 of the present invention can communicate with high sensitivity even when attached to the tire 160.
  • the connection between the second element 60 and the tire 160 may be a capacitance connection or may be a direct connection.
  • the tire 160 that can be used in the present invention is not particularly limited, but is usually a rubber pneumatic tire, typically a tire 160 containing carbon black.
  • the RFID tag 100 is embedded or attached to the inner peripheral surface side of the tire 160.
  • the vehicle to which the tire 160 is attached is not particularly limited, and examples thereof include automobiles, motorcycles, bicycles, construction machines, and airplanes.
  • the tire 160 includes a wheel rim 161, a sidewall 166 and a tread 165, with a bead wire 162, a carcass 163 and a breaker cord 164 embedded therein.
  • the tire 160 contains a rubber component (natural rubber, synthetic rubber), carbon black, a vulcanizing agent, a filler, and the like.
  • carbon black is blended with respect to 100 parts by weight of rubber in an amount of 40 parts by weight or more and 60 parts by weight or less, particularly 45 parts by weight or more and 55 parts by weight or less.
  • the RFID tag 100 is attached to the inner peripheral surface of the tire 160 by using the first rubber sheet 120.
  • the first rubber sheet 120 has adhesiveness, and the first rubber sheet 120 is mixed with the bleed component even when it comes into contact with the bleed component (oil and fat component, etc.) that bleeds from the inside of the tire 160. Can be done.
  • the RFID tag 100 can be attached to the inner surface of the tire 160 for a long period of time.
  • the RFID tag 100 may be attached to the inner peripheral surface of the portion of the tire 160 where the tread pattern is arranged, or may be attached to the inner peripheral surface of the bead portion of the tire 160.
  • the radio waves received by the first element 50 and the second element 60 are transmitted to the RF chip 10 via the coupling transformer 20.
  • the impedance of the RF chip 10 is about several k ⁇ to 10 k ⁇ , while the impedance between the first element 50 and the second element 60 is as small as about 100 ⁇ .
  • the small impedance between the first element 50 and the second element 60 is due to the influence of the resistance component of carbon black contained in the second rubber sheet 130 and the tire 160 around it, in addition to the impedance of the antenna itself. large.
  • the vulcanized rubber tire 160 has a resistivity of about several tens of k ⁇ ⁇ cm depending on the type of tire.
  • the RF chip 10 has an impedance of about several k ⁇ to 10 k ⁇ . Therefore, when the RFID tag 100 of the present embodiment is embedded in the vulcanized rubber tire 160, if the terminals of the RF chip 10 are directly connected to the first element 50 and the second element 60, the received radio waves are efficiently transmitted to the RF chip 10. I can't guide you.
  • the impedance of the primary side 30 of the coupling transformer 20 is Z / n 2 . Therefore, in the RFID tag 100 of the first embodiment, the primary side of the coupling transformer 20 is adjusted by adjusting the ratio of the number of windings on the secondary side 40 of the coupling transformer 20 to the number of windings on the primary side 30. 30 is input with low impedance, and the secondary side 40 is converted to high impedance to match the input impedance of the RF chip 10.
  • the first element 50 extends in one direction from the printed circuit board 90, and the antenna of the RFID tag 100 is a monopole antenna in which the second element 60 is the ground plane and the first element 50 is the antenna wire.
  • the operation is similar. Therefore, by setting the wavelength at the communication frequency of the RFID tag 100 to ⁇ and the electrical length of the first element 50 to ⁇ / 4 or ⁇ / 2, the resonance frequency of the first element 50 is set to the communication frequency of the RFID tag 100. It is preferable because it can be matched.
  • the ground plane is further strengthened by electrically connecting the second element 60 to the vulcanized rubber tire 160.
  • the vicinity of one end of the first element 50 formed by the braided wire of the conductor is arranged (for example, fitted) in the groove 65 formed in the printed circuit board 90, and the other end is arranged.
  • the portion extends from the printed circuit board 90.
  • antenna elements having an electric length of ⁇ / 4 are connected to both ends of a substrate on which an RF chip is mounted.
  • the connection between the antenna element and the substrate may be damaged.
  • the vicinity of one end of the first element 50 is arranged on the printed circuit board 90 and the other end is opened as in the present embodiment, the end of the first element 50 and the printed circuit board There is an advantage that the connection with 90 is not easily damaged.
  • the connection between the first element 50 and the printed circuit board 90 is strong against expansion and contraction of the tire 160, and the positional relationship between the first element 50 and the printed circuit board 90 is stable.
  • FIG. 12 is a schematic view showing a production line of the rubber-coated RFID tag 150.
  • the braided roll 200 is a roll that supplies the braided wire 205 that is the first element 50
  • the butyl rubber roll 210 is a roll that supplies the first rubber sheet 120, which is a strip-shaped first rubber sheet 120. Is wrapped around.
  • the braided wire 205 is arranged on the first rubber sheet 120 delivered from the butyl rubber roll 210.
  • the braided wire 205 arranged on the first rubber sheet 120 adheres to the first rubber sheet 120.
  • An idler 220 and a tag stacker 230 are arranged on the supply side of the butyl rubber roll 210.
  • the tag stacker 230 is configured such that a plurality of printed circuit boards 90 are arranged one above the other and one printed circuit board 90 can be sequentially attached onto the first rubber sheet 120.
  • a concave groove 65 formed on the lower surface side of the printed circuit board 90 is arranged along the supply direction, and the printed circuit board 90 and the braided wire 205 are positioned so that the braided wire 205 is inserted into the concave groove 65. There is.
  • the printed circuit board 90 arranged in the tag stacker 230 is provided with a second element 60 on the first surface 91 of the printed circuit board 90, and the second surface 92 of the printed circuit board 90 is an RF chip 10.
  • the one provided with the coupling transformer 20 is used. That is, the printed circuit board 90 filled in the tag stacker 230 does not include the first element 50 of the above-mentioned RFID tag 100, and by using the method for manufacturing the rubber-coated RFID tag 150 described here, the first element 50 can be used. A rubber-coated RFID tag 150 also including one element 50 will be manufactured.
  • a known method such as etching can be used.
  • a known method of providing the RF chip 10 on the printed circuit board 90 a known method such as wire bonding can be used.
  • the second rubber roll 240 in FIG. 12 is a roll for supplying the vulcanized rubber sheet 130 onto the printed circuit board 90 arranged on the first rubber sheet 120, and the idler 250 and the idler 260 are the first rubbers. It is an idler that crimps a laminated body in which a sheet 120, a printed circuit board 90, and a vulcanized rubber sheet 130 are laminated.
  • the butyl rubber sheet 120 which is the first rubber sheet 120, is formed by crimping a laminate in which the first rubber sheet 120, the printed circuit board 90, and the vulcanized rubber sheet 130 are laminated in this order with the idler 250 and the idler 260.
  • a part of the braided wire enters the concave groove 65, and the braided wire arranged in the concave groove 65 is surely held in the concave groove 65.
  • the periphery of the butyl rubber sheet 120 and the second rubber sheet 130 comes into contact with each other and pressurizes. Glue. Therefore, the printed circuit board 90, each element (RF chip 10, coupling transformer 20, second element 60) provided on the first surface 91 and the second surface 92 of the printed circuit board 90, and the first element 50 (braided wire 205). ) Is protected by the butyl rubber sheet 120 and the second rubber sheet 130.
  • the cutter 270 and the cutter 280 cut a laminate composed of a first rubber sheet 120, a braided wire 205, and a vulcanized rubber sheet 130 at a set position to obtain set dimensions.
  • the rubber-coated RFID tag 150 can be manufactured as follows.
  • the braided wire 205 sent out from the braided roll 200 was superposed on the first rubber sheet 120 sent out from the butyl rubber roll 210, and the tag stacker 230 defined the first rubber sheet 120 and the braided wire 205.
  • the printed circuit board 90 is arranged at the position, and the braided wire 205 is arranged in the groove 65 of the printed circuit board 90. At that time, by pressurizing the printed circuit board 90 toward the idler 220, the braided wire is press-fitted into the groove 65.
  • the second rubber sheet 130 sent out from the second rubber roll 240 is arranged on the printed circuit board 90 adhering to the first rubber sheet 120.
  • the laminated body in which the first rubber sheet 120, the printed circuit board 90, and the second rubber sheet 130 are laminated is passed between the idler 250 and the idler 260 to crimp the laminated body.
  • the crimped laminate is cut to a predetermined size.
  • the printed circuit board 90 supplied from the tag stacker 230 is supplied onto the butyl rubber sheet 120, but the printed circuit board 90 is supplied onto the butyl rubber sheet 120 by the following method. May be good.
  • a plurality of printed circuit boards 90 are placed on a non-stretchable tape-shaped base material at regular intervals and adhered to the base material, and a tag supply roll 290 wound with this base material and a first idler are used.
  • a second idler 310 arranged to face the 220 and the first idler 220, and a take-up roll 300 are provided.
  • the printed circuit board 90 is sent out from the tag supply roll 290 at regular intervals and passed between the first idler 220 and the second idler 310 so that the printed circuit board 90 is transferred onto the butyl rubber sheet 120. It is configured. Also in this manufacturing apparatus, the braided wire 205 on the first rubber sheet 120 is fitted into the groove 65 of the printed circuit board 90, and the braided wire 205 is arranged in the groove 65.
  • FIG. 8 is a plan view showing a state in which the RFID tag 100 is adhesively arranged on the first rubber sheet 120 in the rubber-coated RFID tag 150 manufactured by the above manufacturing method.
  • FIG. 9 shows that the RFID tag 100 adhesively arranged on the first rubber sheet 120 shown in FIG. 8 is further coated with the second rubber sheet 130 and crimped, and the RFID tag 100 is attached to the first rubber sheet.
  • It is sectional drawing which shows the rubber-coated RFID tag 150 in the state which is sandwiched between 120 and the 2nd rubber sheet 130.
  • FIG. 8 also shows a cut surface 110 that cuts the first rubber sheet 120, the braided wire 205 (first element 50), and the second rubber sheet 130 (see FIG. 9) at the time of manufacture.
  • the cut surface 110 is slightly separated from the end of the printed circuit board 90, and as a result, the end of the first element 50 slightly protrudes from the end of the printed circuit board 90. Therefore, even after cutting, the entire printed circuit board 90 is surely covered with the first rubber sheet 120 and the second rubber sheet 130, and it is possible to prevent the printed circuit board 90 from being exposed.
  • the distance between the end surface of the printed circuit board 90 and the cut surface 110 is about 5 mm.
  • the distance between the end face of the printed circuit board 90 and the cut surface 110 is preferably 5 mm or more.
  • the first element 50 is arranged in the groove 65 and the first element 50 is arranged in the groove 65.
  • the conductive connection with the through hole 70 can be ensured, and the positional relationship between the first element 50 and the printed circuit board 90 can be stabilized.
  • FIG. 11 is a schematic cross-sectional view showing a state in which the rubber-coated RFID tag 150 is attached to the inside of the tire 160.
  • the tire 160 includes a wheel rim 161, a sidewall 166 and a tread 165, with a bead wire 162, a carcass 163 and a breaker cord 164 embedded therein.
  • the rubber-coated RFID tag 150 is attached to the inner surface of the tire 160 so that the first element 50 is centered on the rotation axis of the tire and follows the radial direction.
  • the rubber-coated RFID tag 150 is attached to the inner surface of the tire 160 so that the first rubber sheet 120 side of the rubber-coated RFID tag 150 is in contact with the inner surface of the tire.
  • the RFID tag 100 is attached to the inner surface of the tire due to the adhesiveness of the butyl rubber sheet 120. Further, even when the butyl rubber sheet 120 comes into contact with the bleed component that bleeds from the inside of the tire, the butyl rubber sheet 120 can be mixed with the bleed component, so that the RFID tag 100 can be attached to the inner peripheral surface of the tire for a long period of time. it can.
  • the method of fixing the rubber-coated RFID tag 150 to the tire 160 is not limited to the above, and the rubber-coated RFID tag 150 can be attached or embedded at any position on the tire 160.
  • the rubber-coated RFID tag 150 may be attached to the inner peripheral surface of the portion where the tread pattern of the tire is arranged, or may be attached to the inner peripheral surface of the bead portion of the tire.
  • FIG. 10 is a diagram showing the frequency characteristics of the communicable distance of the RFID tag 100 measured by attaching the rubber-coated RFID tag 150 to the inside of the tire 160.
  • a steep resonance characteristic may be provided in the path from the RF chip to the antenna in order to avoid fluctuation of the frequency characteristic of the antenna due to the carbon black contained in the tire 160.
  • RFID tags have different communication frequencies between the EU (communication frequency 860 MHz) and Japan (communication frequency 920 MHz). Therefore, for RFID tags having a steep resonance characteristic in the path from the RF chip to the antenna, it is necessary to prepare different RFID tags for the EU and Japan.
  • a coupling transformer 20 having a different number of windings is provided between the RF chip 10 and the first element 50 and the second element 60 to adjust the impedance of the primary side 30. It was lowered to eliminate the effect of carbon black contained in the tire rubber. As a result, the RFID tag 100 capable of communicating in a wide range of frequencies including EU and Japan has been realized as shown in FIG.
  • the RFID tag 100 is attached to the tire 160 by measuring the RFID tag 100 in a state of being sandwiched between the first rubber sheet 120 and the second rubber sheet 130. There is also an advantage that the communication characteristics of the RFID tag 100 can be confirmed in this case or when embedded in the tire.
  • FIGS. 6 and 7 show two examples of the connection between the secondary side 40 of the coupling transformer 20 and the RF chip 10 in the second embodiment.
  • the RFID tag 100 of the second embodiment is different from the first embodiment only in the method of mounting the RF chip 10 on the printed circuit board 90 and the method of connecting the RF chip 10 and the secondary side 40 of the coupling transformer 20. The other is the same as that of the first embodiment.
  • the RF chip 10 of the second embodiment uses a so-called BGA package, and includes two bumps 87 as terminals for electrical connection. (Usually, it also has an additional bump 87 with no electrical connection for fixing the package.)
  • One end of the secondary side 40 of the coupling transformer 20 is directly on the first bump 87 of the RF chip 10, and the other end is two. It is connected to the second bump 87 of the RF chip 10 via the through hole 85 and the wiring 86 on the first surface 91 side.
  • the shape of the secondary side 40 of the coupling transformer 20 is the same in FIGS. 6 and 7. However, in the RF chip 10, two bumps 87 are arranged in the horizontal direction in FIG. 6 in FIG. 6 and in the vertical direction in FIG. 7, and as a result, the number of windings on the secondary side 40 in FIG. 7 is shown in FIG. It is 1/4 larger than the number of windings on the secondary side 40.
  • the RF chip 10 By making the RF chip 10 into a BGA package and making the shape of the secondary side 40 of the coupling transformer 20 the shape shown in FIG. 6 or FIG. 7, the same printed circuit board 90 is used and the same RF chip 10 is arranged.
  • the winding number ratio of the coupling transformer 20 can be changed only by changing the angle. Therefore, in the RFID tag 100 of the second embodiment, when it is desired to change the impedance of the primary side 30 of the coupling transformer 20 depending on, for example, the rubber material of the tire 160 to be attached or embedded, the RF chip 10 By changing the arrangement angle of, the impedance of the primary side 30 of the coupling transformer 20 can be changed with respect to the RF chip 10 having the same input impedance.
  • the difference in the number of windings on the secondary side 40 of the coupling transformer 20 is 1/4, but the difference in the number of windings can be increased by devising the shape of the secondary side 40 of the coupling transformer 20. Those skilled in the art will easily understand that it can be made larger.
  • FIG. 14 is a schematic view showing another example of FIG.
  • a convex portion (guide portion) 65 is formed around the through hole 70 and on the first surface 91.
  • the first element 50 can be arranged at a predetermined position.
  • the convex portion 65 may be partial or may be formed linearly.
  • FIG. 15 is a schematic view showing another example of the production line of the rubber-coated RFID tag 150.
  • the difference between the production line shown in FIG. 15 and the production line shown in FIG. 12 is that in the production line of FIG. 12, the first element 50 is first placed on the first rubber sheet 120 and the butyl rubber sheet 120.
  • the printed circuit board 90 is arranged on the opposite surface of FIG. 12 so that the so-called groove 65 faces the upper surface, and then the first element 50 is placed in the groove 65. It is a method of arranging in.
  • FIG. 16 is a schematic diagram of the frequency and the communication distance when the RFID tag 100 is attached to the tire 160.
  • two types of tires 160 A and B were prepared.
  • the frequency and the communication distance were measured in two types: the case where the through hole 70 of the RFID tag 100 and the first element 50 were directly coupled (A1, B1) and the case where the first element 50 was capacitively coupled (A2, B2).
  • the capacitive coupling is mainly that the braided wire of the first element 50 and the through hole 70 are directly joined, but at the manufacturing site, the braided wire of the first element 50 and the through hole are tentatively joined.
  • the holes 70 are separated from each other by a slight distance, the first element 50 and the through holes 70 are coupled to each other via a capacitance. In this example, this state is a capacitive coupling.
  • the RF chip 10 corresponds to the "RF chip”
  • the first element 50 corresponds to the "first element”
  • the second element 60 corresponds to the “second element”
  • the coupling transformer 20 “couples”.
  • the printed circuit board 90 corresponds to the "printed circuit board”
  • the primary side 30 of the coupling transformer corresponds to the "primary side of the coupling transformer”
  • the secondary side 40 of the coupling transformer corresponds to the "coupled transformer”.
  • the RFID tag 100 and the rubber-coated RFID tag 150 correspond to the "RFID tag”
  • the first surface 91 of the printed circuit board corresponds to the "first surface of the printed circuit board”
  • the first surface of the printed circuit board corresponds to the "secondary side”.
  • the two surfaces 92 correspond to the "second surface of the printed circuit board", the convex portion 65, the concave groove 65 or the groove 65 correspond to the "guide portion, the groove”, and the through hole 70 corresponds to the "through hole”.
  • the first rubber sheet 120 and the butyl rubber sheet 120 correspond to the "first rubber sheet”
  • the second rubber sheet 130 and the vulgarized rubber sheet 130 correspond to the "second rubber sheet”
  • the knitting roll 200 Corresponds to the "braided wire roll”
  • the butyl rubber roll 210 corresponds to the "butyl rubber roll”
  • the idlers 220, 250, 260 and 310 correspond to the "idler”
  • the tag stacker 230 corresponds to the "tag stacker”.
  • the second rubber roll 240 corresponds to the "second rubber roll”
  • the cutters 270 and 280 correspond to the "cutter”
  • the tag supply roll 290 corresponds to the "tag supply roll”
  • the take-up roll 300 corresponds to the "wind-up roll”.
  • the “roll” corresponds to the RFID tag built-in tire 500
  • the RFID tag built-in tire 500 corresponds to the "RFID tag built-in tire”.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Aerials (AREA)
  • Tires In General (AREA)
  • Support Of Aerials (AREA)

Abstract

Le problème décrit par la présente invention est de fournir une étiquette RFID peu affectée par la constante diélectrique relative du noir de carbone inclus dans le caoutchouc de pneumatique même lorsqu'elle est utilisée en étant fixée à un pneumatique ou incorporée dans celui-ci. La solution selon l'invention porte sur une étiquette RFID 100 de pneumatique qui est pourvue : d'une puce RF 10 ; d'un premier élément 50 formé par un fil conducteur tressé ; d'un second élément 60 ; d'un transformateur de couplage 20 ; et d'une carte de circuit imprimé 90. Une rainure de type rail 65 est disposée sur la carte de circuit imprimé 90. Le premier élément 50 est disposé dans la rainure 65 et s'étend à partir de la carte de circuit imprimé 90. Le premier élément 50 est relié à une extrémité du côté primaire 30 du transformateur de couplage 20. Le second élément 60 est relié à l'autre extrémité du côté primaire 30 du transformateur de couplage 20. La puce RF 10 est reliée au côté secondaire 40 du transformateur de couplage 20. Le nombre d'enroulements du côté primaire 30 dans le transformateur de couplage 20 est inférieur à celui du côté secondaire 40.
PCT/JP2020/036192 2019-12-09 2020-09-25 Étiquette rfid, pneumatique ayant une étiquette rfid comprise en son sein, et procédé de fabrication d'une étiquette rfid WO2021117314A1 (fr)

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JP2019-222421 2019-12-09
JP2019222421A JP6751975B1 (ja) 2019-12-09 2019-12-09 Ｒｆｉｄタグ、ｒｆｉｄタグ内蔵タイヤ、およびｒｆｉｄタグの製造方法

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CN117383024A (zh) * 2023-12-08 2024-01-12 泰州永和塑料包装有限公司 一种塑料盒翻转盖自动标签贴合机

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DE112021000307T5 (de) * 2020-02-17 2022-11-03 The Yokohama Rubber Co., Ltd. RFID-Modul und Luftreifen mit diesem eingebettet darin
EP4275916A1 (fr) * 2021-02-25 2023-11-15 Sumitomo Rubber Industries, Ltd. Pneu

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