WO2019220695A1 - Rf tag antenna and rf tag, sponge member with rf tag, silent tire with rf tag, tire with rf tag - Google Patents

Rf tag antenna and rf tag, sponge member with rf tag, silent tire with rf tag, tire with rf tag Download PDF

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Publication number
WO2019220695A1
WO2019220695A1 PCT/JP2019/003540 JP2019003540W WO2019220695A1 WO 2019220695 A1 WO2019220695 A1 WO 2019220695A1 JP 2019003540 W JP2019003540 W JP 2019003540W WO 2019220695 A1 WO2019220695 A1 WO 2019220695A1
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WO
WIPO (PCT)
Prior art keywords
tag
potential difference
tire
antenna
difference forming
Prior art date
Application number
PCT/JP2019/003540
Other languages
French (fr)
Japanese (ja)
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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Filing date
Publication date
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
Priority to JP2020518968A priority Critical patent/JP6930776B2/en
Publication of WO2019220695A1 publication Critical patent/WO2019220695A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C5/00Inflatable pneumatic tyres or inner tubes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support

Definitions

  • the present invention relates to an RF tag antenna and an RF tag, a sponge member with an RF tag, a silent tire with an RF tag, and a tire with an RF tag.
  • RFID Radio Frequency Identification
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2012-253700 discloses a wireless communication device that facilitates attachment of a radiation conductor and a ground conductor and improves connection reliability between conductors, a manufacturing method thereof, and wireless communication A metal article with a device is disclosed.
  • a wireless communication device described in Patent Document 1 includes a dielectric block having a first main surface and a second main surface facing the first main surface, and a radiation conductor provided on the first main surface of the dielectric block; , A ground conductor provided on the second main surface of the dielectric block, a wireless IC element for processing a high-frequency signal, a feed conductor for connecting the radiation conductor and the ground conductor, and a short-circuit conductor for connecting the radiation conductor and the ground conductor
  • a radio communication device including an inverted F-type antenna including at least a radiation conductor, a ground conductor, a feeding conductor, and a short-circuit conductor, each of which is configured as a flat metal conductor.
  • the radiation conductor portion is disposed on the first main surface of the dielectric block, the ground conductor portion is disposed on the second main surface of the dielectric block, and the feeding terminal portion is mainly on the side surface of the dielectric block. It is location, in which short-circuiting conductor portions are mainly disposed on a side surface of the dielectric block.
  • Patent Document 2 Japanese Patent Laid-Open No. 2007-124696 discloses a communication system that requires an ultra-wideband and small antenna device such as a Broadband-PAN (Personal Area Network) using UWB (ultra Wide Band) technology. 1 discloses a wide-band antenna device with a low profile that can also be used in Japanese.
  • UWB Ultra Wide Band
  • the wideband antenna device described in Patent Document 2 is a wideband antenna device including a conductive ground plane and a radiating conductor plate that are disposed so that at least a part of each is opposed to each other, and the conductive ground plane and the radiating conductor.
  • a magnetic material having a relative magnetic permeability of greater than 1 and approximately 8 or less is interposed between the plates.
  • Patent Document 3 Japanese Patent Laid-Open No. 2013-110585 discloses a thin antenna for reading an RFID tag that is used for radio waves in the UHF band and can perform good communication even when attached to a metal member. ing.
  • a thin antenna tire described in Patent Document 3 includes a magnetic sheet, an antenna portion disposed on one surface of the magnetic sheet, and a conductor ground plane disposed on the other surface of the magnetic sheet, and the magnetic sheet When viewed in the thickness direction, the antenna section and the conductor ground plane are arranged so that at least a part thereof overlaps, and the thickness of the magnetic sheet is 200 ⁇ m or more and 600 ⁇ m or less.
  • Patent Document 4 Japanese Patent Laid-Open No. 10-119521
  • various metal members used inside the tire as an antenna of the transponder 3 itself (not as a primary winding)
  • the transponder 3 itself It is disclosed to provide a more reliable transponder and a pneumatic tire with a transponder that are more compact and have no possibility of being damaged during tire running or during tire molding or vulcanization.
  • JP 2012-253700 A JP 2007-124696 A JP 2013-110585 A JP-A-10-119521
  • Patent Document 1 discloses an inverted-F type RF tag antenna. However, there is a problem that long-distance reading cannot be performed even if a dielectric is used.
  • Patent Documents 2 and 3 since the structure is complicated such as feeding using a coaxial line or a strip line, there is a problem that the manufacturing cost increases, and furthermore, it is difficult to adjust the resonance frequency according to the application. There was a problem. Furthermore, in patent document 4, it is essential to attach directly to a bead wire (steel wire), and there is a problem that an RF tag cannot be used for a tire without a steel wire or a resin material containing carbon powder. there were. In addition, when a general RF tag is brought close to a resin material containing carbon powder, the resonance frequency shifts, which hinders communication, or the resin material containing carbon powder causes poor RF tag communication. there were.
  • a main object of the present invention is to provide an RF tag antenna and an RF tag that can be attached to and communicate with a resin material containing carbon powder.
  • Another main object of the present invention is to provide an RF tag antenna and an RF tag, a sponge member with an RF tag, a silent tire with an RF tag, and a tire with an RF tag that can be attached to and communicate with a resin material containing carbon powder. That is.
  • An RF tag antenna is an RF tag antenna that is used by being attached to a resin material containing carbon powder.
  • the RF tag antenna includes a ground portion, a potential difference forming portion that forms a potential difference with respect to the ground portion, and a potential difference. And an inductor pattern portion formed in the formation portion.
  • a potential difference can be formed with respect to the ground portion by the potential difference forming portion.
  • the resin material containing carbon powder is a high-resistance conductor, radio wave absorption occurs and RF tag communication cannot be performed.
  • an impedance is generated by the potential difference forming portion, and a resin material containing carbon powder can be used as a part of the antenna.
  • a resonance circuit can be formed by the capacitor formed by the potential difference forming portion and the coil formed by the inductor pattern portion, and the influence on the resin material containing carbon powder can be prevented.
  • a steel wire can be used as a part of the antenna.
  • the antenna can be applied to various antennas such as a dipole antenna, a collinear array antenna, a tablet antenna, a monopole antenna, and an inverted F antenna.
  • the RF tag antenna according to a second aspect of the present invention is the RF tag antenna according to one aspect, wherein the potential difference may be not less than 10 k ⁇ and not more than 1 M ⁇ .
  • the resistance value varies greatly depending on the degree of dispersion of the carbon powder contained in the tire itself, and therefore it is usually necessary to compensate for the wavelength variation for each tire.
  • the impedance of the potential difference generated between the potential difference forming portion and the inner surface of the tire to be 10 k ⁇ or more and 1 M ⁇ or less, it is possible to minimize the influence of the variation in carbon powder that varies from tire to tire.
  • An RF tag antenna according to a third aspect is the RF tag antenna according to one aspect or the second aspect, wherein the potential difference forming portion has a bent portion or a curved portion with respect to a ground portion formed of a flat plate. It may consist of.
  • the potential difference forming portion is formed by a flat plate having a bent portion or a curved portion with respect to the ground portion, the formation of the potential difference forming portion can be easily realized.
  • An RF tag antenna according to a fourth aspect of the present invention is the RF tag antenna according to the third aspect of the present invention from one aspect, wherein the potential difference forming part may include a spacer at least in part.
  • the potential difference forming portion can create a space for forming a potential difference from the ground portion by the spacer.
  • a stable space can be formed by using a spacer made of a dielectric.
  • the dielectric may be made of styrene foam, ceramic, or any other material.
  • An RF tag antenna according to a fifth aspect of the present invention is the RF tag antenna according to the fourth aspect of the present invention, wherein the inductor pattern portion may be formed by a notch.
  • the inductor pattern portion is formed by notches, an increase in the number of parts can be prevented.
  • An RF tag antenna according to a sixth aspect of the present invention is the RF tag antenna according to the fifth aspect of the present invention, wherein the ground part and the potential difference forming part may be formed from a continuous flat plate.
  • ground portion and the potential difference forming portion are formed from a continuous flat plate, they can be formed from a single flat plate.
  • An RF tag antenna according to a seventh aspect of the present invention is the RF tag antenna according to the sixth aspect of the present invention, wherein the element length of the potential difference forming portion is from ⁇ / 4 or 5 ⁇ / 8 in the case of the target wavelength ⁇ . It may be.
  • the element length of the potential difference forming portion is ⁇ / 4 or 5 ⁇ / 8 when the target wavelength is ⁇ , the transmission / reception distance can be increased.
  • An RF tag includes the RF tag antenna according to any one of the seventh aspect to the seventh invention, and an IC chip provided in the RF tag antenna.
  • a potential difference can be formed with respect to the ground portion by the potential difference forming portion.
  • the resin material containing carbon powder is a high-resistance conductor, radio wave absorption occurs and RF tag communication cannot be performed.
  • an impedance is generated by the potential difference forming portion, and a resin material containing carbon powder can be used as a part of the antenna.
  • a raw material of the resin material used for this invention it is not limited to the resin hardened
  • the material of the resin material can contain at least one selected from the group consisting of resin, rubber, and elastomer.
  • the antenna can be applied to various antennas such as a dipole antenna, a tablet antenna, and a monopole antenna.
  • the RF tag according to the ninth aspect of the present invention may further include a case for accommodating the RF tag antenna in the RF tag according to the eighth aspect of the present invention.
  • the RF tag can be protected by the case. Further, by using an electrically insulating case such as a resin film or a resin plate, it is possible to prevent other metals from coming into direct contact with the ground portion, the IC chip, or the potential difference forming portion.
  • an electrically insulating case such as a resin film or a resin plate, it is possible to prevent other metals from coming into direct contact with the ground portion, the IC chip, or the potential difference forming portion.
  • An RF tag according to a tenth invention is the RF tag according to the ninth invention, wherein the case has a holding part capable of holding the RF tag antenna and a base part which can be bent to the holding part. And a first holding part and a second holding part extending from the first holding part, and the base part includes a first base part and a second base part extending from the first base part. And the first holding part and the first base part are connected, the second holding part and the second base part are separated, and by folding the first holding part and the first base part, The ground portion of the RF tag antenna disposed between the first holding portion and the first base portion is disposed between the first holding portion and the first base portion, and the potential difference forming portion is the second holding portion. It may be affixed to.
  • the case holding portion and the base portion are valley-folded, the ground portion of the RF tag antenna is disposed between the first holding portion and the first base portion, and the potential difference forming portion is attached to the second holding portion.
  • An RF tag according to an eleventh aspect of the invention is the RF tag according to the ninth aspect or the tenth aspect of the invention, wherein the case has a notch portion formed in the second base portion and a convex portion formed in the second holding portion.
  • the potential difference forming portion may be formed by fitting the convex portion into the cutout portion.
  • the potential difference forming part can be stably formed by adopting a structure in which the notch part is fitted to the convex part in the case.
  • An RF tag according to a twelfth aspect of the invention is the RF tag according to any of the ninth to eleventh aspects of the invention. Or a double-sided tape may be provided.
  • the RF tag can be easily attached to the resin material containing carbon powder.
  • the sponge member with an RF tag according to still another aspect includes any one of the RF tags according to the twelfth invention from the RF tag according to another aspect, and a sponge member.
  • a tire is mentioned as an example of the resin material containing carbon powder.
  • a sponge member is preferably attached to the tire from the viewpoints of quietness and soundproofing.
  • the sponge member with the RF tag can communicate with the reader before being attached to the tire, and can be easily managed.
  • the silent tire with an RF tag according to still another aspect includes a sponge member with an RF tag according to still another aspect and a tire.
  • the quietness and soundproofness of the tire can be improved. Furthermore, it is possible to communicate with the RF tag even when the tire is stored, that is, when a plurality of tires are stacked. As a result, the tire can be easily managed.
  • a tire with an RF tag according to still another aspect includes any one of the RF tags according to the twelfth invention from the RF tag according to the other aspect, and the tire.
  • a tire with an RF tag according to a sixteenth aspect of the invention is the tire with an RF tag according to the fifteenth aspect of the invention, wherein the ground portion may contact the tire and the potential difference forming portion may be separated from the inner peripheral surface of the tire.
  • a potential difference can be formed with respect to the ground portion by the potential difference forming portion.
  • impedance is stably generated by the potential difference forming portion, and a resin material containing carbon powder is used as a part of the antenna.
  • a resonance circuit can be formed by the capacitor formed by the potential difference forming portion and the coil formed by the inductor pattern portion, thereby preventing the influence on the resin material containing carbon powder.
  • a silent tire with an RF tag according to a seventeenth invention includes the tire with an RF tag according to the sixteenth invention and a sponge member provided with a mounting portion for mounting the RF tag.
  • the sponge member is attached to the tire, it is possible to impart characteristics such as silence and soundproofing to the tire and to easily manage the tire.
  • FIG. 2 is a schematic development view of the RF tag of FIG. 1. It is the typical enlarged view to which A of the inductor pattern part of FIG. 2 was expanded. It is a typical assembly drawing which shows an example which forms RF tag. It is a typical assembly drawing which shows an example which forms RF tag. It is a typical assembly drawing which shows an example which forms RF tag. It is a schematic diagram which shows an example of the usage condition of RF tag. It is a schematic diagram which shows the other example of the usage condition of RF tag. It is typical sectional drawing for demonstrating the reason for providing an electric potential difference formation part. It is a schematic diagram which shows the other example of RF tag.
  • FIG. 16 is a sectional view taken along line AA in FIG. It is a schematic diagram which shows an example of a silent tire with an RF tag.
  • FIG. 1 is a schematic perspective view showing an example of an RF tag 100 according to the present embodiment
  • FIG. 2 is a schematic development view of the RF tag 100 of FIG.
  • An RF tag 100 according to the present invention is mainly attached to an article and can perform transmission / reception with a reader / writer. As shown in FIGS. 1 and 2, the RF tag 100 according to the present invention includes an RF tag antenna 200, an IC chip 500, and a case 600. Hereinafter, each part will be described in detail.
  • the RF tag antenna 200 includes a ground part 210 and a potential difference forming part 220.
  • An inductor pattern unit 400 is formed in the potential difference forming unit 220, and the IC chip 500 is mounted on a part of the inductor pattern unit 400.
  • the ground portion 210 is made of a metal thin film of a conductive metal such as aluminum.
  • the thin film in this embodiment is formed with a thickness of 3 ⁇ m or more and 35 ⁇ m or less. You may use what formed the metal thin film on the resin film.
  • the ground part 210 is formed by a technique such as etching or pattern printing.
  • the ground part 210 is formed from a flat plate.
  • a flat plate means a thin plate-like thing, and the thickness of a flat plate is not limited. As described above, the thickness of the flat plate is preferably 3 ⁇ m or more and 35 ⁇ m or less.
  • the potential difference forming part 220 is made of a metal thin film of a conductive metal such as aluminum. Generally, the thin film in this embodiment is formed with a thickness of 3 ⁇ m or more and 35 ⁇ m or less. You may use what formed the metal thin film on the resin film.
  • the potential difference forming unit 220 is formed by a technique such as etching or pattern printing.
  • ground portion 210 and potential difference forming portion 220 are made of the same material. That is, the ground part 210 and the potential difference forming part 220 can be formed by cutting and / or processing a continuous metal thin film. As will be described later, the ground part 210 and the potential difference forming part 220 can be formed by cutting and / or processing a rectangular flat plate made of a continuous metal thin film.
  • the material of the ground part 210 and the potential difference forming part 220 may be the same or different.
  • the metal material constituting the ground part 210 and the metal material constituting the potential difference forming part 220 may be different, or the metal material constituting the ground part 210 and the metal material constituting the potential difference forming part 220 are the same.
  • different thicknesses or different surface treatments The antenna length of the potential difference forming unit 220 will be described later.
  • FIG. 3 is a schematic enlarged view in which the portion A of the inductor pattern portion 400 of FIG. 2 is enlarged.
  • the inductor pattern portion 400 can be formed by providing a rectangular opening on a conductive flat plate constituting the potential difference forming portion 220.
  • the opening has an internal area S.
  • the inductor pattern unit 400 includes a region surrounded by a side 404, a side 405, a side 406, a side 407, and a side 408. Further, in the present embodiment, the impedance of the inductor pattern portion 400 can be made constant by the internal area S of the inductor pattern portion 400.
  • a rectangular cutout 420 having a lateral opening is formed on a conductive flat plate constituting the potential difference forming part 220.
  • the notch 420 is formed from a side 401, a side 402, a side 403, a side 409, a side 410, and a side 411.
  • a notch is formed between the side 403 and the side 409, and an IC chip 500 described later is provided so as to bridge between the side 403 and the side 409.
  • the notch 420 and the opening communicate with each other through the gap. Note that although the case where the notch is formed between the side 403 and the side 409 has been described, the invention is not limited thereto, and an insulating portion may be formed between the side 403 and the side 409.
  • the inductor pattern portion 400 is made of an aluminum metal thin film.
  • the thin film in this embodiment is formed with a thickness of 3 ⁇ m or more and 35 ⁇ m or less. You may use what formed the metal thin film on the resin film.
  • the inductor pattern part 400 can be formed by drilling an opening in a metal thin film.
  • the inductor pattern portion 400 is formed by a technique such as etching or pattern printing.
  • the impedance of the inductor pattern portion 400 can be made constant by the internal area S of the inductor pattern portion 400.
  • the IC chip 500 is arranged so as to bridge the side 403 and the side 409 of the inductor pattern part 400 on the upper surface side of the RF tag antenna 200 (on the same plane as the potential difference forming part 220).
  • the IC chip 500 operates based on radio waves received by the plate antenna of the RF tag antenna 200. Specifically, the IC chip 500 according to the present embodiment first rectifies a part of the carrier wave transmitted from the reading device, and the IC chip 500 itself generates a power supply voltage necessary for operation. Then, the IC chip 500 operates a non-volatile memory in which the control logic circuit in the IC chip 500, the unique information of the product, and the like are stored, according to the generated power supply voltage. Further, the IC chip 500 operates a communication circuit for transmitting / receiving data to / from a reading device (reader).
  • the case 600 includes a band-shaped or rectangular flat plate-shaped holding portion 610, a band-shaped or rectangular flat plate-shaped base portion 650, a fold 6L, a hole 6H, and an insertion portion 620.
  • the case 600 shown in this embodiment can be formed by cutting an insulating member such as a resin film or a thin resin plate.
  • the fold 6L is formed between the holding portion 610 and the base portion 650, and the holding portion 610 can be valley-folded with respect to the base portion 650 along the fold 6L.
  • the crease 6L can be composed of a plurality of short slits and long slits.
  • the insertion part 620 is provided to extend to one end side of the holding part 610.
  • the case 600 includes a holding portion 610 that can hold the RF tag antenna 200 and a base portion 650 that can be bent to the holding portion 610.
  • the holding unit 610 includes a first holding unit 611 and a second holding unit 612 extending continuously from the first holding unit 611.
  • the base portion 650 includes a first base portion 651 and a second base portion 652 that extends continuously from the first base portion 651.
  • the first holding part 611 and the first base part 651 are connected.
  • the first holding part 611 and the first base part 651 are formed in substantially the same size with substantially the same width and substantially the same length.
  • the second holding part 612 and the second base part 652 are separated by a long slit.
  • the width dimension of the ground part 210 of the RF tag antenna 200 may be substantially the same as the width dimension of the first holding part 611 and the first base part 651, or may be formed slightly smaller.
  • the length dimension of the ground part 210 may be substantially the same as the length dimension of the first holding part 611 and the first base part 651, or may be formed slightly smaller.
  • the potential difference forming part 220 (or the conductive member for forming the potential difference forming part) of the RF tag antenna 200 is attached to the second holding part 612 with an adhesive or the like.
  • a notch (or hole) 6H is formed in the second base portion 652, and a convex portion (or insertion portion) 620 is formed in the second holding portion 612.
  • the second holding portion 612 to which the conductive member is attached is arranged in a state of being separated from the second base portion 652 (a state in which an air layer exists between them). Therefore, a potential difference forming portion 220 that is separated from the resin material existing on the inner peripheral surface of the tire is formed.
  • the width of the insertion part 620 is slightly smaller than the width of the holding part 610.
  • the hole 6H is provided at a position separated from the one end side of the base portion 650 by a predetermined distance.
  • the hole 6H can be formed by a long slit in a direction orthogonal to the longitudinal direction of the base portion 650.
  • the case 600 can be formed of a thin resin film or resin plate mainly made of polyethylene terephthalate.
  • polyethylene terephthalate In addition to polyethylene terephthalate, one or a plurality of insulating materials or resins such as polyimide and polyvinyl chloride may be used as the case 600.
  • the case 600 is for protecting the IC chip 500, the ground part 210, and the potential difference forming part 220. Therefore, the case 600 preferably has a thickness of several micrometers to several hundred micrometers, and more preferably has a thickness of about several tens of micrometers. In the present embodiment, the case 600 is provided. However, the present invention is not limited to this, and the case 600 may not be provided, and another insulating coating process may be used. Also in that case, the thickness of the insulating coating layer is preferably several micrometers or more and several hundred micrometers or less, and more preferably about several tens of micrometers.
  • FIG. 4, FIG. 5, and FIG. 6 are schematic assembly views showing an example of forming the RF tag 100 shown in FIG. 2 to FIG.
  • the RF tag antenna 200 provided with the IC chip 500 is attached to the holding portion 610 that holds the RF tag antenna 200 of the case 600.
  • the RF tag antenna 200 may be bonded and fixed to the holding portion 610 using an adhesive, and the RF tag antenna 200 provided with the IC chip 500 may be disposed in the case 600 as it is.
  • the size of the holding portion 610 of the case 600 and the size of the RF tag antenna 200 are preferably set to be approximately the same.
  • the fold line 6 ⁇ / b> L formed between a part of the holding portions 610 and the base portion 650 of the case 600 is folded, and the RF tag antenna 200 is attached to the base portion 650 of the case 600.
  • the base unit 650 includes a first base unit 651 and a second base unit 652
  • the holding unit 610 of the RF tag antenna 200 includes a first holding unit 611 and a second holding unit 612.
  • a boundary line 653 is formed at the boundary between the first base portion 651 and the second base portion 652 of the base portion 650, and is between the first holding portion 611 and the second holding portion 612 of the holding portion 610 of the RF tag antenna 200.
  • a boundary line 613 continuous with the boundary line 653 is formed.
  • the longitudinal dimension of the first base part 651 and the first holding part 611 is set to be the same.
  • the dimension in the longitudinal direction of the second holding part 612 is set to be slightly larger than the distance between the boundary line 653 and the hole 6H. Further, as shown in FIG. 5, the first base portion 651 and the first holding portion 611 are continuous, but the second base portion 652 and the second holding portion 612 are separated.
  • the ground portion 210 of the RF tag antenna 200 is sandwiched (preferably bonded) between the first base portion 651 and the first holding portion 611, and the conductive material constituting the potential difference forming portion 220 of the RF tag antenna 200.
  • the member is attached to the second holding part 612 of the case 600.
  • the second base portion 652 of the case 600 is in a state separated from the second holding portion 612.
  • the insertion portion 620 of the case 600 is inserted into the hole 6 ⁇ / b> H of the case 600 in the direction of arrow Y.
  • the RF tag 100 shown in FIG. 1 is formed.
  • the potential difference forming part 220 is inserted as shown in FIG. 1 by inserting the insertion part 620 into the hole 6H. Is curved from the base portion 650 of the case 600, and a so-called arch shape can be easily formed. In this way, a space is formed between the base portion 650 and the potential difference forming portion 220. Since the case 600 has elasticity and is formed of a relatively stiff member, the arch shape of the potential difference forming part 220 can be maintained.
  • FIG. 7 is a schematic diagram illustrating an example of a usage mode of the RF tag 100 having the above configuration
  • FIG. 8 is a schematic diagram illustrating another example of a usage mode of the RF tag 100.
  • the RF tag 100 according to the present invention is provided on a static electricity removing sheet 910 containing carbon powder and / or carbon fiber (particularly, carbon black).
  • the static eliminating sheet 910 can contain a resin, an elastomer, and / or rubber.
  • the RF tag 100 can be attached to the static eliminating sheet 910 using an adhesive or the like.
  • the RF tag 100 according to the present invention can perform transmission and reception without being affected by the carbon powder.
  • the potential difference is provided by the potential difference forming unit 220, so that the RF tag 100 can transmit and receive. The reason why the transmission / reception can be performed will be described later.
  • the RF tag 100 is provided inside a tire (automobile, bicycle, motorcycle, etc.) 920 containing carbon powder and / or carbon fiber (particularly carbon black).
  • the RF tag 100 is usually arranged so that the longitudinal direction of the RF tag is along the circumferential direction of the tire 920.
  • the RF tag may be arranged so that the longitudinal direction of the RF tag is inclined or orthogonal to the circumferential direction of the tire 920 as necessary.
  • the tire 920 can contain conventional rubber (natural rubber, synthetic rubber), a vulcanizing agent, a filler and the like in addition to the carbon powder.
  • the carbon powder is blended in an amount of 40 to 60 parts by weight, particularly 45 to 55 parts by weight, based on 100 parts by weight of rubber.
  • a vulcanizing agent for tires in which 30 parts by weight or more and 60 parts by weight or less of carbon black is mixed with 100 parts by weight of diene rubber containing 30% by weight or more and 90% by weight or less of butadiene rubber, a vulcanizing agent, a filler and the like.
  • a rubber composition can be vulcanized to produce a tire.
  • the RF tag 100 can be attached to the tire 920 using an adhesive or the like.
  • the tire 920 since the tire 920 is used by being rotated, it is preferable that the tire 920 is attached to the center portion in the width direction of the tire 920 inside the tire 920. Since the RF tag 100 is attached to the tire 920 in a state where the potential difference forming portion 220 is curved from the base portion 650 of the case 600, vibration and deformation of the potential difference forming portion 220 are prevented even when the tire 920 rotates and vibrates at high speed.
  • the RF tag 100 is normally stored horizontally and stacked, the RF tag 100 according to the present invention is provided with a potential difference by the potential difference forming unit 220. Therefore, the RF tag 100 performs transmission and reception. be able to. Further, in the case where carbon powder (carbon black) contained in the tire 920 or the tire itself and further steel wire are included, the steel wire can be used as an antenna.
  • FIG. 9 is a schematic cross-sectional view for explaining the reason why the potential difference forming part 220 is provided.
  • the usage mode in which the RF tag 100 is provided on the tire 920 shown in FIG. 8 will be described. Further, in the example of FIG. 9, it is assumed that a metal steel wire 925 is incorporated in the tire 920.
  • Hard rubber used for a general tire 920 maintains hardness by adding carbon powder and vulcanizing. It is also known that carbon powder is often used as a radio wave absorber. Therefore, the inside of the tire 920 includes a radio wave absorber and a radio wave shield covered with the steel wire 920. As a result, it is found that it is difficult to transmit and receive the RF tag in a resin material containing carbon powder (carbon black) such as the tire 920. Therefore, when the RF tag 100 is installed inside the tire 920, it becomes difficult for the RF tag 100 to communicate with the outside of the tire 920 due to the influence of the carbon powder contained in the tire 920.
  • carbon black carbon powder
  • the inventor measured the amount of attenuation inside a general tire 920. As a result, the amount of attenuation was 9 dB when stacked with two-tier tires, 16 dB when stacked with three-tier tires, and 23 dB when stacked with four-tier tires.
  • reception sensitivity of a general RF tag is ⁇ 10 dB
  • the operation sensitivity of the RF tag does not reach and communication becomes impossible.
  • reception sensitivity of the RF tag is ⁇ 20 dB
  • the operation sensitivity of the RF tag does not reach and communication becomes impossible.
  • the DC resistance 930 (see FIG. 9) varies between several tens of kilohms and several hundreds of kilohms depending on the degree of dispersion of the carbon powder (carbon black) contained in the tire 920 itself. As a result, it was found that the relative permittivity changes and it is necessary to compensate for the wavelength fluctuation for each tire 920.
  • the present inventor has found and realized a technical idea of capturing a radio signal into the RF tag 100 by using the tire 920 itself as an antenna.
  • the steel wire 925 is replaced with an antenna, and the technical idea of capturing a radio signal into the RF tag 100 has been found and realized. This will be described below.
  • a capacitor C can be formed between the potential difference forming portion 220 and the inner surface 921.
  • the portion of the potential difference forming portion 220 that is provided apart from the inner surface 921 of the tire 920 can have high impedance. That is, it is preferable to set the potential difference between the inner surface 921 of the tire 920 and the potential difference forming portion 220 in a range of 10 kilohms or more and 1 megaohms or less.
  • the resistance of the air layer formed between the inner surface 921 of the tire 920 and the potential difference forming part 220 is preferably set in the range of 10 kilohms or more and 1 megaohms or less.
  • a resonant circuit can be formed from the reactance L of the inductor pattern portion 400 and the capacitor C, and the carbon powder (carbon black) contained in the tire 920 affects the element length of the RF tag 100. This can be prevented. As a result, the ground portion 210 can capture the carbon powder (carbon black) or the steel wire 925 as an antenna into the IC chip 500 of the RF tag 100 as an electric field.
  • the carbon powder or steel wire of the tire 920 can be used as an antenna. Therefore, even when the RF tag 100 is installed inside the tire 920, communication with the outside of the tire 920 is possible. Defects can be made difficult to occur. Furthermore, by making the capacitor C have a high impedance, it is possible to minimize the influence of the variation in carbon powder that varies from tire to tire.
  • the element length of the potential difference forming unit 220 is twice the length of the side L1 and the side L2 (see FIG. 2), and the side 401, the side 402, and the side 403 of the notch 420. , Side 409, side 410, and side 411.
  • the optimum element length of the potential difference forming unit 220 is ⁇ / 4 or 5 ⁇ / 8 with respect to the target frequency ⁇ .
  • the element length is designed to be 1 ⁇ 4 of the wavelength ⁇ of the frequency to be used.
  • the element length may be 5/8 of the wavelength ⁇ .
  • the RF tag 100 has a shape in which the potential difference forming unit 220 includes a first potential difference forming unit 221, a second potential difference forming unit 222, and a third potential difference forming unit 223, and forms a part of a trapezoid. It may consist of.
  • the potential difference forming unit 220 can be formed by bending a metal thin plate multiple times. The metal thin plate may be laminated on the resin film. Further, as shown in FIG.
  • the potential difference forming unit 220 of the RF tag 100 may include a fourth potential difference forming unit 224 and a fifth potential difference forming unit 225, and may have a shape forming a part of a triangle.
  • the potential difference forming unit 220 can be formed by bending a plurality of metal thin plates or a laminate in which metal thin plates are laminated on a resin film.
  • the potential difference forming unit 220 of the RF tag 100 includes a sixth potential difference forming unit 226, a seventh potential difference forming unit 227, an eighth potential difference forming unit 228, and a ninth potential difference forming unit 229.
  • the shape may form a part of a polygon.
  • the potential difference forming unit 220 can be formed by bending a plurality of metal thin plates or a laminate in which metal thin plates are laminated on a resin film.
  • the potential difference forming unit 220 of the RF tag 100 is arranged in the tenth potential difference forming unit 230, the eleventh potential difference forming unit 231, and the space between the potential difference forming unit 220 and the ground unit 210.
  • the spacer 232 may be included.
  • the spacer 232 is preferably made of a heat-resistant member that is lightweight and flexible. For example, a foam member (foamed polystyrene) or the like is preferable.
  • a polystyrene foam having 90% by volume or more of air. More preferably, it is an independent foamed polystyrene having 95 volume% or more and 99 volume% or less of air.
  • the relative dielectric constant of the spacer 232 is desirably in the range of 1% to 20%. More preferably, it is 1.01% or more and 2.70% or less, most preferably 1.01% or more and 2.50% or less, and most preferably 1.02% or more and 1.08% or less.
  • the foaming ratio of the polystyrene foam is preferably 15 to 60 times (in this case, the relative dielectric constant is 1.50% to 2.50%).
  • the opening of the potential difference forming part 220 is opened.
  • the area can be kept large, and the communication distance can be extended from several meters to several tens of meters.
  • the insulating base material 140 is made of foamed polystyrene, but is not limited to this, and may be an insulating material such as polyethylene, polyimide, thin foam (bola), or the like. Other foams or materials having the following may be used.
  • the spacer 232 may have a foamed shape, may have one or many cavities, and may be made of a composite material in which different kinds of materials are mixed or laminated.
  • the potential difference forming portion 220 is formed by inserting the RF tag 100 into the hole 6H of the insertion portion 620 of the case 600.
  • the present invention is not limited to this, and the potential difference is formed by adhesion or the like.
  • the portion 220 may be formed.
  • a conductive adhesive or an adhesive layer 450 is used, the present invention is not limited to this, and any conductive adhesive such as a conductive double-sided tape, solder, one-component or two-component epoxy resin, etc. It may be.
  • the space between the potential difference forming part 220 and the case 650 is formed, but the present invention is not limited to this, and the space is embedded with a member similar to the spacer 232 or a lightweight and flexible heat-resistant member.
  • the potential difference forming unit 220 may be formed by using any method such as forming a frame.
  • FIG. 14 is a schematic view showing an example of a sponge member with an RF tag
  • FIG. 15 is a schematic cross-sectional view showing an example of a sponge member with an RF tag
  • FIG. 16 is a cross-sectional view taken along line AA in FIG.
  • FIG. 17 is a schematic diagram showing an example of a silent tire 920 with an RF tag.
  • the sponge member with an RF tag includes a long sponge member 800 and an RF tag 100.
  • the RF tag 100 is built in a part of the sponge member 800. That is, the sponge member 800 and the RF tag 100 are integrated.
  • a recess (mounting portion) is formed in a part of the sponge member 800 on the tire side so that the RF tag 100 can be mounted, and the sponge member 800 and the RF tag 100 are integrated by mounting the RF tag 100 in the recess. can do.
  • the RF tag 100 may be adhered to the sponge member 800 using an adhesive, or the RF tag 100 may be attached to the sponge member 800 by fitting or locking of physical unevenness.
  • the tire-side bottom surface of the sponge member 800 and the ground portion 210 (and the base portion 650) of the RF tag 100 are substantially flush with each other.
  • the ground portion 210 of the RF tag 100 is arranged in contact with the inner surface of the tire.
  • the ground portion 210 is in contact with the inner surface of the tire via an insulating layer such as an adhesive layer, or directly in contact with no insulating layer.
  • a long sponge member can be cut into appropriate dimensions so as to fit the inner peripheral dimensions of the tire.
  • a plurality of RF tags 100 are built in (attached) to the long sponge member at predetermined intervals.
  • the sponge member 800 is cut according to the peripheral length of the central portion in the inner circumferential direction (circumferential direction) of the tire 920, and then an adhesive or the like is used on the inner surface of the tire 920. Affixed.
  • the sponge member 800 attached to the inner surface of the tire 920 is made of an insulating special sound absorbing sponge.
  • the sponge member 800 prevents vibration, noise, and the like, and further has a sound absorbing effect.
  • the sponge member 800 a foam molded body having heat resistance and sound absorption can be used.
  • silicone rubber sponge, fluorine rubber sponge, nitrile rubber sponge, acrylic rubber sponge, chloroprene rubber sponge, ethylene propylene rubber sponge and the like can be mentioned.
  • silicone rubber sponge, fluorine rubber sponge, nitrile rubber sponge and acrylic rubber sponge are preferably used.
  • the foamed molded body is a porous structure, and the cells (holes) may be communication holes or closed cells.
  • the cell of the foam molded body is a communicating hole, the sound absorption and sound insulation of the foam molded body are improved, and when the cell of the foam molded body is closed cell, the sound insulating performance is improved. That is, it is presumed that the energy of sound (road noise) is converted into heat and the road noise is reduced by the vibration of the thin film forming the cells (holes) of the foam molded article.
  • the type of adhesive to be used is not limited, and depending on the type of foamed molded product, a synthetic rubber type, a cyanoacrylate type, an epoxy It can be appropriately selected from vulcanized adhesives based on silicone and silicone rubber, silane coupling agents and the like.
  • the sponge member 800 has a double mountain structure, but is not limited thereto, and may be a single mountain structure or any other shape. Devices that effectively reduce tire cavity resonance may be included.
  • the RF tag 100 is attached to the inside of the tire 920 simultaneously with the sponge member 800.
  • the operation of attaching the RF tag 100 to the tire can be simplified.
  • the work of attaching the RF tag 100 individually to the tire 920 can be omitted, and the cost can be reduced.
  • the potential difference forming part 220 can form a potential difference with respect to the ground part 210.
  • the resin material including the carbon powder (tire 920 or the like) is a high-resistance conductor, radio wave absorption occurs and the RF tag 100 cannot communicate.
  • high impedance is generated by the potential difference forming unit 220, and a resin material containing carbon powder can be used as a part of the antenna.
  • the steel wire 925 can be used as a part of the antenna.
  • the IC chip 500 corresponds to an “IC chip”
  • the RF tag antenna 200 corresponds to an “RF tag antenna”
  • the inductor pattern portion 400 corresponds to an “inductor pattern portion”
  • the ground portion 210 corresponds to “
  • the RF tag 100 corresponds to the “RF tag”
  • the potential difference forming unit 220 corresponds to the “potential difference forming unit”
  • the spacer 232 corresponds to the “spacer”
  • the silent tire 920 with the RF tag is provided.
  • sponge member 800 corresponds to “sponge member with RF tag”
  • case 600 corresponds to “case”
  • holding portion 610 becomes “holding portion”.
  • the base portion 650 corresponds to the “base portion”, the first holding portion 611 corresponds to the “first holding portion”, and the second holding portion 612 corresponds to the “second holding portion”.
  • the first base portion 651 corresponds to the “first base portion”, the second base portion 652 corresponds to the “second base portion”, and the notch portion 6H and the hole 6H correspond to the “notch portion”.
  • the convex portion 620 and the insertion portion 620 correspond to the “convex portion”.

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  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

[Problem] To provide an RF tag antenna 200 and an RF tag 100 that can be attached to a resin material containing carbon powder. [Solution] An RF tag antenna 200 is used in a state of being attached to resin materials 910, 920 containing carbon powder. The RF tag antenna 200 includes a ground portion 210, a potential difference forming portion 220 for forming potential difference with respect to the ground portion 210, and an inductor pattern part 400 formed at the potential difference forming portion 220. The RF tag 100 includes the RF tag antenna 200 having the above configuration and an IC chip 500 provided at the RF tag antenna 200. The sponge member with an RF tag includes the RF tag 100 having the above configuration and a sponge member 800 provided with a mounting portion on which the RF tag 100 is mounted.

Description

RFタグアンテナおよびRFタグ、RFタグ付きスポンジ部材、RFタグ付き静音タイヤ、RFタグ付きタイヤRF tag antenna and RF tag, sponge member with RF tag, silent tire with RF tag, tire with RF tag
 本発明は、RFタグアンテナおよびRFタグ、RFタグ付きスポンジ部材、RFタグ付き静音タイヤ、RFタグ付きタイヤに関する。 The present invention relates to an RF tag antenna and an RF tag, a sponge member with an RF tag, a silent tire with an RF tag, and a tire with an RF tag.
 近年、製品や部品等の在庫管理、物流管理等を行う管理システムにおいて、RFID(Radio Frequency Identification)技術が利用されている。このRFID技術を用いたシステムでは、RFタグとリーダライタ(以下、読取装置という。)との間で無線通信が行われ、RFタグに記憶される識別情報等が読取装置により読み取られる。 In recent years, RFID (Radio Frequency Identification) technology has been used in management systems that perform inventory management, logistics management, and the like of products and parts. In a system using this RFID technology, wireless communication is performed between an RF tag and a reader / writer (hereinafter referred to as a reader), and identification information stored in the RF tag is read by the reader.
 例えば、特許文献1(特開2012-253700号公報)には、放射導体やグランド導体の取付けを容易なものとし、導体間の接続信頼性の向上を図る無線通信デバイス、その製造方法及び無線通信デバイス付き金属物品について開示されている。 For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2012-253700) discloses a wireless communication device that facilitates attachment of a radiation conductor and a ground conductor and improves connection reliability between conductors, a manufacturing method thereof, and wireless communication A metal article with a device is disclosed.
 特許文献1に記載の無線通信デバイスは、第1主面及び該第1主面と対向する第2主面を有する誘電体ブロックと、誘電体ブロックの第1主面に設けられた放射導体と、誘電体ブロックの第2主面に設けられたグランド導体と、高周波信号を処理する無線IC素子と放射導体及びグランド導体とを接続する給電導体と、放射導体とグランド導体とを接続する短絡導体とを含んで構成される逆F型アンテナを備えた無線通信デバイスであって、少なくとも放射導体、グランド導体、給電導体及び短絡導体は、それぞれ平板状をなす金属導体として構成されており、金属導体は、放射導体部分が誘電体ブロックの第1主面に配置され、グランド導体部分が誘電体ブロックの第2主面に配置され、給電端子部分が主として誘電体ブロックの側面に配置され、短絡導体部分が主として誘電体ブロックの側面に配置されているものである。 A wireless communication device described in Patent Document 1 includes a dielectric block having a first main surface and a second main surface facing the first main surface, and a radiation conductor provided on the first main surface of the dielectric block; , A ground conductor provided on the second main surface of the dielectric block, a wireless IC element for processing a high-frequency signal, a feed conductor for connecting the radiation conductor and the ground conductor, and a short-circuit conductor for connecting the radiation conductor and the ground conductor A radio communication device including an inverted F-type antenna including at least a radiation conductor, a ground conductor, a feeding conductor, and a short-circuit conductor, each of which is configured as a flat metal conductor. The radiation conductor portion is disposed on the first main surface of the dielectric block, the ground conductor portion is disposed on the second main surface of the dielectric block, and the feeding terminal portion is mainly on the side surface of the dielectric block. It is location, in which short-circuiting conductor portions are mainly disposed on a side surface of the dielectric block.
 特許文献2(特開2007-124696号公報)には、UWB(ultra Wide Band)技術を利用したBroadband-PAN(Personal Area Network)などの、超広帯域かつ小型なアンテナ装置が必要とされる通信システムにおいても利用可能な低背位化した広帯域アンテナ装置について開示されている。 Patent Document 2 (Japanese Patent Laid-Open No. 2007-124696) discloses a communication system that requires an ultra-wideband and small antenna device such as a Broadband-PAN (Personal Area Network) using UWB (ultra Wide Band) technology. 1 discloses a wide-band antenna device with a low profile that can also be used in Japanese.
 特許文献2に記載の広帯域アンテナ装置においては、少なくともその一部が互いに対向するように配設された導体地板と放射導体板とを備えた広帯域アンテナ装置であって、前記導体地板と前記放射導体板との間に、使用無線周波数における比透磁率が1より大きく概ね8以下となる磁性体を介在させるものである。 The wideband antenna device described in Patent Document 2 is a wideband antenna device including a conductive ground plane and a radiating conductor plate that are disposed so that at least a part of each is opposed to each other, and the conductive ground plane and the radiating conductor. A magnetic material having a relative magnetic permeability of greater than 1 and approximately 8 or less is interposed between the plates.
 特許文献3(特開2013-110685号公報)には、UHF帯の電波で用いられ、金属部材に取り付けられていても通信を良好に行うことができるRFIDタグの読み取り用の薄型アンテナについて開示されている。 Patent Document 3 (Japanese Patent Laid-Open No. 2013-110585) discloses a thin antenna for reading an RFID tag that is used for radio waves in the UHF band and can perform good communication even when attached to a metal member. ing.
 特許文献3に記載の薄型アンテナタイヤは、磁性シートと、磁性シートの一方の面上に配置されたアンテナ部と、磁性シートの他方の面上に配置された導体地板と、を備え、磁性シートの厚さ方向に見たときに、アンテナ部および導体地板は少なくとも一部が重なるように配置され、磁性シートの厚さが200μm以上600μm以下である。 A thin antenna tire described in Patent Document 3 includes a magnetic sheet, an antenna portion disposed on one surface of the magnetic sheet, and a conductor ground plane disposed on the other surface of the magnetic sheet, and the magnetic sheet When viewed in the thickness direction, the antenna section and the conductor ground plane are arranged so that at least a part thereof overlaps, and the thickness of the magnetic sheet is 200 μm or more and 600 μm or less.
 特許文献4(特開平10-119521号公報)には、タイヤ内部に使用されている種々の金属部材をトランスポンダ3自体のアンテナとして使用することで(一次巻線としてではなく)、トランスポンダ3自体をより小型化し、タイヤ走行中或いはタイヤ成形、加硫時に破損する可能性がない信頼性のあるトランスポンダ及びトランスポンダ付き空気タイヤを提供することについて開示されている。 In Patent Document 4 (Japanese Patent Laid-Open No. 10-119521), by using various metal members used inside the tire as an antenna of the transponder 3 itself (not as a primary winding), the transponder 3 itself It is disclosed to provide a more reliable transponder and a pneumatic tire with a transponder that are more compact and have no possibility of being damaged during tire running or during tire molding or vulcanization.
 特許文献4に記載のトランスポンダ付き空気タイヤは、トランスポンダの電子回路とタイヤ内部の所定の金属構成部材とを電気的に直接接続することによって、該金属構成部材をトランスポンダの受信及び送信用アンテナとすることを特徴とするものである。 In the pneumatic tire with a transponder described in Patent Document 4, the electronic circuit of the transponder and a predetermined metal component inside the tire are electrically directly connected, so that the metal component becomes an antenna for receiving and transmitting the transponder. It is characterized by this.
特開2012-253700号公報JP 2012-253700 A 特開2007-124696号公報JP 2007-124696 A 特開2013-110685号公報JP 2013-110585 A 特開平10-119521号公報JP-A-10-119521
 特許文献1には、逆F型のRFタグアンテナについて開示されている。しかしながら、誘電体を用いても長距離の読取を行うことができないという問題がある。 Patent Document 1 discloses an inverted-F type RF tag antenna. However, there is a problem that long-distance reading cannot be performed even if a dielectric is used.
 また、特許文献2および3においては、同軸線路またはストリップ線路を用いて給電するなど構造が複雑なため、製造コストが嵩むという問題、さらには、用途に応じて共振周波数を調節することが難しいという問題があった。
 さらに、特許文献4においては、ビードワイヤー(スチールワイヤ)に直接取り付けることが必須となっており、スチールワイヤの無いタイヤまたはカーボン粉末を含む樹脂材については、RFタグを用いることができないという問題があった。
 また、一般的なRFタグを、カーボン粉末を含む樹脂材に近づけると共振周波数がずれてしまい通信に支障が出るという問題、またはカーボン粉末を含む樹脂材によりRFタグの通信が不良となる問題があった。
Further, in Patent Documents 2 and 3, since the structure is complicated such as feeding using a coaxial line or a strip line, there is a problem that the manufacturing cost increases, and furthermore, it is difficult to adjust the resonance frequency according to the application. There was a problem.
Furthermore, in patent document 4, it is essential to attach directly to a bead wire (steel wire), and there is a problem that an RF tag cannot be used for a tire without a steel wire or a resin material containing carbon powder. there were.
In addition, when a general RF tag is brought close to a resin material containing carbon powder, the resonance frequency shifts, which hinders communication, or the resin material containing carbon powder causes poor RF tag communication. there were.
 本発明の主な目的は、カーボン粉末を含む樹脂材に取り付けて通信することができるRFタグアンテナおよびRFタグを提供することである。
 本発明の他の主な目的は、カーボン粉末を含む樹脂材に取り付けて通信することができるRFタグアンテナおよびRFタグ、RFタグ付きスポンジ部材、RFタグ付き静音タイヤ、RFタグ付きタイヤを提供することである。
A main object of the present invention is to provide an RF tag antenna and an RF tag that can be attached to and communicate with a resin material containing carbon powder.
Another main object of the present invention is to provide an RF tag antenna and an RF tag, a sponge member with an RF tag, a silent tire with an RF tag, and a tire with an RF tag that can be attached to and communicate with a resin material containing carbon powder. That is.
(1)
 一局面に従うRFタグアンテナは、カーボン粉末を含む樹脂材に取り付けて用いられるRFタグアンテナであって、RFタグアンテナは、グランド部と、グランド部に対して電位差を形成する電位差形成部と、電位差形成部に形成されたインダクタパターン部と、を含むものである。
(1)
An RF tag antenna according to one aspect is an RF tag antenna that is used by being attached to a resin material containing carbon powder. The RF tag antenna includes a ground portion, a potential difference forming portion that forms a potential difference with respect to the ground portion, and a potential difference. And an inductor pattern portion formed in the formation portion.
 この場合、電位差形成部によりグランド部に対して電位差を形成することができる。また、カーボン粉末を含む樹脂材は、高抵抗の導電体であるため、電波吸収が生じ、RFタグの通信ができない。しかしながら、本発明においては、電位差形成部によりインピーダンスを発生させ、カーボン粉末を含む樹脂材をアンテナの一部として利用することができる。
 さらに、電位差形成部によるコンデンサと、インダクタパターン部によるコイルとにより共振回路を形成し、カーボン粉末を含む樹脂材における影響を防止することができる。
 また、RFタグアンテナをタイヤに使用する場合であっても、スチールワイヤをアンテナの一部として利用することができる。
 さらに、アンテナは、ダイポールアンテナ、コーリニアアレイアンテナ、タブレットアンテナ、モノポールアンテナ、逆Fアンテナ等、各種のアンテナに適用することができる。
In this case, a potential difference can be formed with respect to the ground portion by the potential difference forming portion. In addition, since the resin material containing carbon powder is a high-resistance conductor, radio wave absorption occurs and RF tag communication cannot be performed. However, in the present invention, an impedance is generated by the potential difference forming portion, and a resin material containing carbon powder can be used as a part of the antenna.
Furthermore, a resonance circuit can be formed by the capacitor formed by the potential difference forming portion and the coil formed by the inductor pattern portion, and the influence on the resin material containing carbon powder can be prevented.
Even when the RF tag antenna is used for a tire, a steel wire can be used as a part of the antenna.
Furthermore, the antenna can be applied to various antennas such as a dipole antenna, a collinear array antenna, a tablet antenna, a monopole antenna, and an inverted F antenna.
(2)
 第2の発明にかかるRFタグアンテナは、一局面に従うRFタグアンテナにおいて、電位差は、10kΩ以上1MΩ以下であってもよい。
(2)
The RF tag antenna according to a second aspect of the present invention is the RF tag antenna according to one aspect, wherein the potential difference may be not less than 10 kΩ and not more than 1 MΩ.
 本発明のRFタグをタイヤの内側に貼り付けて使用する場合、タイヤ自身に含まれるカーボン粉末のばらつき度合いにより抵抗の値が大きくばらつくため、通常はタイヤ毎に波長変動を補う必要がある。
 しかし、電位差形成部とタイヤの内面の間に発生させる電位差のインピーダンスを10kΩ以上1MΩ以下にすることによって、タイヤごとに異なる炭素粉末のばらつきの影響を最小限にすることができる。
When the RF tag of the present invention is used while being attached to the inside of a tire, the resistance value varies greatly depending on the degree of dispersion of the carbon powder contained in the tire itself, and therefore it is usually necessary to compensate for the wavelength variation for each tire.
However, by setting the impedance of the potential difference generated between the potential difference forming portion and the inner surface of the tire to be 10 kΩ or more and 1 MΩ or less, it is possible to minimize the influence of the variation in carbon powder that varies from tire to tire.
(3)
 第3の発明にかかるRFタグアンテナは、一局面または第2の発明にかかるRFタグアンテナにおいて、電位差形成部は、平板で形成されたグランド部に対して、折曲部または湾曲部を有する平板からなってもよい。
(3)
An RF tag antenna according to a third aspect is the RF tag antenna according to one aspect or the second aspect, wherein the potential difference forming portion has a bent portion or a curved portion with respect to a ground portion formed of a flat plate. It may consist of.
 この場合、電位差形成部は、グランド部に対して、折曲部または湾曲部を有する平板により形成されるので、電位差形成部の形成を容易に実現することができる。 In this case, since the potential difference forming portion is formed by a flat plate having a bent portion or a curved portion with respect to the ground portion, the formation of the potential difference forming portion can be easily realized.
(4)
 第4の発明にかかるRFタグアンテナは、一局面から第3の発明にかかるRFタグアンテナにおいて、電位差形成部は、少なくとも一部にスペーサを含んでもよい。
(4)
An RF tag antenna according to a fourth aspect of the present invention is the RF tag antenna according to the third aspect of the present invention from one aspect, wherein the potential difference forming part may include a spacer at least in part.
 この場合、電位差形成部は、スペーサにより、グランド部との電位差を形成する空間をつくることができる。また、誘電体からなるスペーサを用いることにより、安定した空間を形成することができる。また、誘電体は発泡スチロール、セラミック、その他の任意の素材を用いてもよい。 In this case, the potential difference forming portion can create a space for forming a potential difference from the ground portion by the spacer. In addition, a stable space can be formed by using a spacer made of a dielectric. The dielectric may be made of styrene foam, ceramic, or any other material.
(5)
 第5の発明にかかるRFタグアンテナは、一局面から第4の発明にかかるRFタグアンテナにおいて、インダクタパターン部は、切り欠きにより形成されてもよい。
(5)
An RF tag antenna according to a fifth aspect of the present invention is the RF tag antenna according to the fourth aspect of the present invention, wherein the inductor pattern portion may be formed by a notch.
 この場合、インダクタパターン部は、切り欠きにより形成されているので、部品点数の増加を防止することができる。 In this case, since the inductor pattern portion is formed by notches, an increase in the number of parts can be prevented.
(6)
 第6の発明にかかるRFタグアンテナは、一局面から第5の発明にかかるRFタグアンテナにおいて、グランド部および電位差形成部は、連続した平板から形成されてもよい。
(6)
An RF tag antenna according to a sixth aspect of the present invention is the RF tag antenna according to the fifth aspect of the present invention, wherein the ground part and the potential difference forming part may be formed from a continuous flat plate.
 この場合、グランド部および電位差形成部は、連続した平板から形成されるので、一枚の平板から形成することができる。 In this case, since the ground portion and the potential difference forming portion are formed from a continuous flat plate, they can be formed from a single flat plate.
(7)
 第7の発明にかかるRFタグアンテナは、一局面から第6の発明にかかるRFタグアンテナにおいて、電位差形成部のエレメント長は、対象となる波長λの場合に、λ/4または5λ/8からなってもよい。
(7)
An RF tag antenna according to a seventh aspect of the present invention is the RF tag antenna according to the sixth aspect of the present invention, wherein the element length of the potential difference forming portion is from λ / 4 or 5λ / 8 in the case of the target wavelength λ. It may be.
 この場合、電位差形成部のエレメント長が、対象となる波長λの場合に、λ/4または5λ/8からなるので、送受信距離を長くすることができる。 In this case, since the element length of the potential difference forming portion is λ / 4 or 5λ / 8 when the target wavelength is λ, the transmission / reception distance can be increased.
(8)
 他の局面に従うRFタグは、一局面から第7の発明のいずれか1項に記載のRFタグアンテナと、RFタグアンテナに設けられたICチップとからなる。
(8)
An RF tag according to another aspect includes the RF tag antenna according to any one of the seventh aspect to the seventh invention, and an IC chip provided in the RF tag antenna.
 この場合、電位差形成部によりグランド部に対して電位差を形成することができる。また、カーボン粉末を含む樹脂材は、高抵抗の導電体であるため、電波吸収が生じ、RFタグの通信ができない。しかしながら、本発明においては、電位差形成部によりインピーダンスを発生させ、カーボン粉末を含む樹脂材をアンテナの一部として利用することができる。
 なお、本発明に使用される樹脂材の素材としては、樹脂を硬化または形成してなる樹脂硬化物または樹脂成形物に限定されない。樹脂材の素材は、樹脂、ゴム、およびエラストマーからなる群から選択される少なくとも一種を含有することができる。例えば、タイヤに使用する樹脂材の素材としては、従来より公知の合成ゴムおよび/または天然ゴムを含有することができる。
 また、タイヤに使用する場合であっても、スチールワイヤをアンテナの一部として利用することができる。
 さらに、アンテナは、ダイポールアンテナ、タブレットアンテナ、モノポールアンテナ等、各種のアンテナに適用することができる。
In this case, a potential difference can be formed with respect to the ground portion by the potential difference forming portion. In addition, since the resin material containing carbon powder is a high-resistance conductor, radio wave absorption occurs and RF tag communication cannot be performed. However, in the present invention, an impedance is generated by the potential difference forming portion, and a resin material containing carbon powder can be used as a part of the antenna.
In addition, as a raw material of the resin material used for this invention, it is not limited to the resin hardened | cured material or resin molding formed by hardening | curing or forming resin. The material of the resin material can contain at least one selected from the group consisting of resin, rubber, and elastomer. For example, as a material of a resin material used for a tire, conventionally known synthetic rubber and / or natural rubber can be contained.
Further, even when used for a tire, a steel wire can be used as a part of an antenna.
Furthermore, the antenna can be applied to various antennas such as a dipole antenna, a tablet antenna, and a monopole antenna.
(9)
 第9の発明にかかるRFタグは、第8の発明に従うRFタグにおいて、RFタグアンテナを収容するためのケースをさらに含んでもよい。
(9)
The RF tag according to the ninth aspect of the present invention may further include a case for accommodating the RF tag antenna in the RF tag according to the eighth aspect of the present invention.
 この場合、ケースによりRFタグを保護することができる。また、樹脂フィルム、樹脂板など電気絶縁性のケースを使用することにより、グランド部、ICチップ、電位差形成部に他の金属が直接接触することを防止することができる。 In this case, the RF tag can be protected by the case. Further, by using an electrically insulating case such as a resin film or a resin plate, it is possible to prevent other metals from coming into direct contact with the ground portion, the IC chip, or the potential difference forming portion.
(10)
 第10の発明にかかるRFタグは、第9の発明にかかるRFタグにおいて、ケースは、RFタグアンテナを保持可能な保持部と、保持部に折り曲げ可能なベース部とを有し、保持部は、第1保持部と、第1保持部から延設された第2保持部とを有し、ベース部は、第1ベース部と、第1ベース部から延設された第2ベース部とを有し、第1保持部と第1ベース部とは接続され、第2保持部と第2ベース部とは分離しており、第1保持部と第1ベース部とを谷折りすることにより、第1保持部と第1ベース部との間に配設されたRFタグアンテナのグランド部が第1保持部と第1ベース部との間に配置されると共に、電位差形成部が第2保持部に貼着されてもよい。
(10)
An RF tag according to a tenth invention is the RF tag according to the ninth invention, wherein the case has a holding part capable of holding the RF tag antenna and a base part which can be bent to the holding part. And a first holding part and a second holding part extending from the first holding part, and the base part includes a first base part and a second base part extending from the first base part. And the first holding part and the first base part are connected, the second holding part and the second base part are separated, and by folding the first holding part and the first base part, The ground portion of the RF tag antenna disposed between the first holding portion and the first base portion is disposed between the first holding portion and the first base portion, and the potential difference forming portion is the second holding portion. It may be affixed to.
 この場合、ケースの保持部とベース部とを谷折りして、RFタグアンテナのグランド部を第1保持部と第1ベース部との間に配置させ、電位差形成部を第2保持部に貼着することで、ケース付きのRFタグを比較的簡単に製造することができる。 In this case, the case holding portion and the base portion are valley-folded, the ground portion of the RF tag antenna is disposed between the first holding portion and the first base portion, and the potential difference forming portion is attached to the second holding portion. By wearing, an RF tag with a case can be manufactured relatively easily.
(11)
 第11の発明にかかるRFタグは、第9の発明または第10の発明にかかるRFタグにおいて、ケースは、第2ベース部に形成された切り欠き部と、第2保持部に形成された凸部とを有し、凸部を切り欠き部に嵌合することにより、電位差形成部が形成されてもよい。
(11)
An RF tag according to an eleventh aspect of the invention is the RF tag according to the ninth aspect or the tenth aspect of the invention, wherein the case has a notch portion formed in the second base portion and a convex portion formed in the second holding portion. The potential difference forming portion may be formed by fitting the convex portion into the cutout portion.
 この場合、ケースにおいて、切り欠き部を凸部に嵌合する構造を採用することで、安定して電位差形成部を形成することができる。 In this case, the potential difference forming part can be stably formed by adopting a structure in which the notch part is fitted to the convex part in the case.
(12)
 第12の発明にかかるRFタグは、第9の発明から第11の発明のいずれかの発明にかかるRFタグにおいて、ケースの少なくとも一部に、ケースを樹脂材に取り付けるための粘着材、接着剤または両面テープが設けられてもよい。
(12)
An RF tag according to a twelfth aspect of the invention is the RF tag according to any of the ninth to eleventh aspects of the invention. Or a double-sided tape may be provided.
 この場合、ケースに、粘着材、接着剤または両面テープが形成されているので、RFタグを容易にカーボン粉末を含む樹脂材に取り付けることができる。 In this case, since the adhesive, adhesive or double-sided tape is formed on the case, the RF tag can be easily attached to the resin material containing carbon powder.
(13)
 さらに他の局面に従うRFタグ付きスポンジ部材は、他の局面に従うRFタグから第12の発明にかかるRFタグのいずれかと、スポンジ部材と、を含むものである。
(13)
The sponge member with an RF tag according to still another aspect includes any one of the RF tags according to the twelfth invention from the RF tag according to another aspect, and a sponge member.
 この場合、カーボン粉末を含む樹脂材の一例としてタイヤがあげられる。タイヤには、静音性、防音性等の観点からスポンジ部材を取り付けることが好ましい。
 RFタグ付きスポンジ部材は、タイヤに取り付けられる前にリーダと通信を行うことができ、管理を容易に行うことができる。
In this case, a tire is mentioned as an example of the resin material containing carbon powder. A sponge member is preferably attached to the tire from the viewpoints of quietness and soundproofing.
The sponge member with the RF tag can communicate with the reader before being attached to the tire, and can be easily managed.
(14)
 さらに他の局面に従うRFタグ付き静音タイヤは、さらに他の局面に従うRFタグ付きスポンジ部材と、タイヤと、を含むものである。
(14)
The silent tire with an RF tag according to still another aspect includes a sponge member with an RF tag according to still another aspect and a tire.
 この場合、タイヤの静音性、防音性を高めることが出来る。さらに、タイヤの保管状態、すなわち、複数個重ねて積んだ状態でもRFタグと通信を行うことができる。その結果、タイヤの管理を容易に行うことができる。 In this case, the quietness and soundproofness of the tire can be improved. Furthermore, it is possible to communicate with the RF tag even when the tire is stored, that is, when a plurality of tires are stacked. As a result, the tire can be easily managed.
(15)
 さらに他の局面に従うRFタグ付きタイヤは、他の局面に従うRFタグから第12の発明にかかるRFタグのいずれかと、タイヤと、を含むものである。
(15)
A tire with an RF tag according to still another aspect includes any one of the RF tags according to the twelfth invention from the RF tag according to the other aspect, and the tire.
 この場合、タイヤの保管状態、すなわち、複数個重ねて積んだ状態でもRFタグと通信を行うことができる。その結果、タイヤの管理を容易に行うことができる。 In this case, it is possible to communicate with the RF tag even in a tire storage state, that is, in a state where a plurality of tires are stacked and stacked. As a result, the tire can be easily managed.
(16)
 第16の発明にかかるRFタグ付きタイヤは、第15の発明にかかるRFタグ付きタイヤにおいて、グランド部はタイヤに接触し、電位差形成部はタイヤの内周面から離間していてもよい。
(16)
A tire with an RF tag according to a sixteenth aspect of the invention is the tire with an RF tag according to the fifteenth aspect of the invention, wherein the ground portion may contact the tire and the potential difference forming portion may be separated from the inner peripheral surface of the tire.
 この場合、電位差形成部によりグランド部に対して電位差を形成することができる。また、グランド部はタイヤに接触し、電位差形成部はタイヤの内周面から離間しているので、安定して電位差形成部によりインピーダンスを発生させ、カーボン粉末を含む樹脂材をアンテナの一部として利用することができ、さらに、電位差形成部によるコンデンサと、インダクタパターン部によるコイルとにより共振回路を形成し、カーボン粉末を含む樹脂材における影響を防止することができる。 In this case, a potential difference can be formed with respect to the ground portion by the potential difference forming portion. In addition, since the ground portion is in contact with the tire and the potential difference forming portion is separated from the inner peripheral surface of the tire, impedance is stably generated by the potential difference forming portion, and a resin material containing carbon powder is used as a part of the antenna. Furthermore, a resonance circuit can be formed by the capacitor formed by the potential difference forming portion and the coil formed by the inductor pattern portion, thereby preventing the influence on the resin material containing carbon powder.
(17)
 第17の発明にかかるRFタグ付き静音タイヤは、第16の発明にかかるRFタグ付きタイヤと、RFタグを装着する装着部が設けられたスポンジ部材と、を含むものである。
(17)
A silent tire with an RF tag according to a seventeenth invention includes the tire with an RF tag according to the sixteenth invention and a sponge member provided with a mounting portion for mounting the RF tag.
 この場合、タイヤにスポンジ部材を取り付けるので、静音性、防音性等の特性をタイヤに付与することができると共に、タイヤの管理を容易に行うことができる。 In this case, since the sponge member is attached to the tire, it is possible to impart characteristics such as silence and soundproofing to the tire and to easily manage the tire.
本実施の形態にかかるRFタグの一例を示す模式的斜視図である。It is a typical perspective view which shows an example of RF tag concerning this Embodiment. 図1のRFタグの模式的展開図である。FIG. 2 is a schematic development view of the RF tag of FIG. 1. 図2のインダクタパターン部のAを拡大した模式的拡大図である。It is the typical enlarged view to which A of the inductor pattern part of FIG. 2 was expanded. RFタグを形成する一例を示す模式的組み立て図である。It is a typical assembly drawing which shows an example which forms RF tag. RFタグを形成する一例を示す模式的組み立て図である。It is a typical assembly drawing which shows an example which forms RF tag. RFタグを形成する一例を示す模式的組み立て図である。It is a typical assembly drawing which shows an example which forms RF tag. RFタグの使用態様の一例を示す模式図である。It is a schematic diagram which shows an example of the usage condition of RF tag. RFタグの使用態様の他の例を示す模式図である。It is a schematic diagram which shows the other example of the usage condition of RF tag. 電位差形成部を設ける理由を説明するための模式的断面図である。It is typical sectional drawing for demonstrating the reason for providing an electric potential difference formation part. RFタグの他の例を示す模式図である。It is a schematic diagram which shows the other example of RF tag. RFタグのさらに他の例を示す模式図である。It is a schematic diagram which shows the other example of RF tag. RFタグのさらに他の例を示す模式図である。It is a schematic diagram which shows the other example of RF tag. RFタグのさらに他の例を示す模式図である。It is a schematic diagram which shows the other example of RF tag. RFタグ付きスポンジ部材の一例を示す模式図である。It is a schematic diagram which shows an example of the sponge member with RF tag. RFタグ付きスポンジ部材の一例を示す模式的断面図である。It is a typical sectional view showing an example of a sponge member with an RF tag. 図15のA-A線断面図である。FIG. 16 is a sectional view taken along line AA in FIG. RFタグ付き静音タイヤの一例を示す模式図である。It is a schematic diagram which shows an example of a silent tire with an RF tag.
 以下、図面を参照しつつ、本発明の実施の形態について説明する。以下の説明では、同一の部品には同一の符号を付す。また、同符号の場合には、それらの名称および機能も同一である。したがって、それらについての詳細な説明は繰り返さないものとする。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Moreover, in the case of the same code | symbol, those names and functions are also the same. Therefore, detailed description thereof will not be repeated.
[本実施の形態]
 図1は、本実施の形態にかかるRFタグ100の一例を示す模式的斜視図であり、図2は、図1のRFタグ100の模式的展開図である。
[This embodiment]
FIG. 1 is a schematic perspective view showing an example of an RF tag 100 according to the present embodiment, and FIG. 2 is a schematic development view of the RF tag 100 of FIG.
(RFタグ100)
 本発明にかかるRFタグ100は、主に物品に取り付けられ、リーダライタと送受信を行うことができるものである。
 図1および図2に示すように、本発明にかかるRFタグ100は、RFタグアンテナ200、ICチップ500およびケース600を含む。以下、各部について詳細に説明を行う。
(RF tag 100)
An RF tag 100 according to the present invention is mainly attached to an article and can perform transmission / reception with a reader / writer.
As shown in FIGS. 1 and 2, the RF tag 100 according to the present invention includes an RF tag antenna 200, an IC chip 500, and a case 600. Hereinafter, each part will be described in detail.
(RFタグアンテナ200)
 図1および図2に示すように、RFタグアンテナ200は、グランド部210、および電位差形成部220を含む。電位差形成部220には、インダクタパターン部400が形成され、インダクタパターン部400の一部にICチップ500が搭載される。
(RF tag antenna 200)
As shown in FIGS. 1 and 2, the RF tag antenna 200 includes a ground part 210 and a potential difference forming part 220. An inductor pattern unit 400 is formed in the potential difference forming unit 220, and the IC chip 500 is mounted on a part of the inductor pattern unit 400.
(グランド部210)
 図1および図2に示すように、グランド部210は、アルミニウムなど導電性金属の金属薄膜からなる。一般的に本実施の形態における薄膜は、3μm以上35μm以下の厚みから形成される。樹脂フィルム上に金属薄膜を形成したものを用いてもよい。グランド部210は、エッチングまたはパターン印刷等の手法によって形成される。グランド部210は平板から形成される。本明細書では、平板とは薄い板状のものを意味し、平板の厚みは限定されない。平板の厚みは上記のとおり、3μm以上35μm以下が好ましい。
(Ground part 210)
As shown in FIGS. 1 and 2, the ground portion 210 is made of a metal thin film of a conductive metal such as aluminum. Generally, the thin film in this embodiment is formed with a thickness of 3 μm or more and 35 μm or less. You may use what formed the metal thin film on the resin film. The ground part 210 is formed by a technique such as etching or pattern printing. The ground part 210 is formed from a flat plate. In this specification, a flat plate means a thin plate-like thing, and the thickness of a flat plate is not limited. As described above, the thickness of the flat plate is preferably 3 μm or more and 35 μm or less.
(電位差形成部220)
 電位差形成部220は、アルミニウムなど導電性金属の金属薄膜からなる。一般的に本実施の形態における薄膜は、3μm以上35μm以下の厚みから形成される。樹脂フィルム上に金属薄膜を形成したものを用いてもよい。
 電位差形成部220は、エッチングまたはパターン印刷等の手法によって形成される。
 本実施の形態においては、グランド部210および電位差形成部220は、同一素材からなる。つまり、グランド部210および電位差形成部220は、連続する金属薄膜を切断および/または加工することによって形成することができる。後述するように、グランド部210および電位差形成部220は、連続する金属薄膜からなる矩形状の平板を切断および/または加工することによって形成することができる。
(Potential difference forming part 220)
The potential difference forming part 220 is made of a metal thin film of a conductive metal such as aluminum. Generally, the thin film in this embodiment is formed with a thickness of 3 μm or more and 35 μm or less. You may use what formed the metal thin film on the resin film.
The potential difference forming unit 220 is formed by a technique such as etching or pattern printing.
In the present embodiment, ground portion 210 and potential difference forming portion 220 are made of the same material. That is, the ground part 210 and the potential difference forming part 220 can be formed by cutting and / or processing a continuous metal thin film. As will be described later, the ground part 210 and the potential difference forming part 220 can be formed by cutting and / or processing a rectangular flat plate made of a continuous metal thin film.
 なお、グランド部210および電位差形成部220の素材は同一であってもよく、異なってもよい。例えば、グランド部210を構成する金属素材と電位差形成部220を構成する金属素材とは異なっていてもよく、あるいはグランド部210を構成する金属素材と電位差形成部220を構成する金属素材とは同一とし、かつそれらの厚みを異ならせ、またはそれらの表面処理を異ならせるようにしてもよい。電位差形成部220のアンテナ長については後述する。 Note that the material of the ground part 210 and the potential difference forming part 220 may be the same or different. For example, the metal material constituting the ground part 210 and the metal material constituting the potential difference forming part 220 may be different, or the metal material constituting the ground part 210 and the metal material constituting the potential difference forming part 220 are the same. And different thicknesses or different surface treatments. The antenna length of the potential difference forming unit 220 will be described later.
(インダクタパターン部400)
 図3は、図2のインダクタパターン部400のA部を拡大した模式的拡大図である。
(Inductor pattern portion 400)
FIG. 3 is a schematic enlarged view in which the portion A of the inductor pattern portion 400 of FIG. 2 is enlarged.
 図3に示すように、インダクタパターン部400は、電位差形成部220を構成する導電性平板に矩形状の開口部を設けることにより形成することができる。開口部は内部面積Sを有する。インダクタパターン部400は、辺404、辺405、辺406、辺407、辺408により囲まれた領域からなる。
 また、本実施の形態において、インダクタパターン部400の内部面積Sにより、インダクタパターン部400のインピーダンスを一定にすることができる。
As shown in FIG. 3, the inductor pattern portion 400 can be formed by providing a rectangular opening on a conductive flat plate constituting the potential difference forming portion 220. The opening has an internal area S. The inductor pattern unit 400 includes a region surrounded by a side 404, a side 405, a side 406, a side 407, and a side 408.
Further, in the present embodiment, the impedance of the inductor pattern portion 400 can be made constant by the internal area S of the inductor pattern portion 400.
 また、RFタグアンテナ200の構成要素ではないが、電位差形成部220を構成する導電性平板に、側方が開口する矩形状の切り欠き部420が形成されている。切り欠き部420は、辺401、辺402、辺403、辺409、辺410、辺411から形成される。 Although not a constituent element of the RF tag antenna 200, a rectangular cutout 420 having a lateral opening is formed on a conductive flat plate constituting the potential difference forming part 220. The notch 420 is formed from a side 401, a side 402, a side 403, a side 409, a side 410, and a side 411.
 辺403と辺409との間に切り欠きによる空隙部が形成されており、これらの辺403および辺409の間を架け渡すように、後述するICチップ500が設けられる。この空隙部を通して切り欠き部420と開口部とが連通している。なお、辺403と辺409との間において、切欠く場合について説明したが、これに限定されず、辺403と辺409との間に絶縁部を形成してもよい。 A notch is formed between the side 403 and the side 409, and an IC chip 500 described later is provided so as to bridge between the side 403 and the side 409. The notch 420 and the opening communicate with each other through the gap. Note that although the case where the notch is formed between the side 403 and the side 409 has been described, the invention is not limited thereto, and an insulating portion may be formed between the side 403 and the side 409.
 本実施の形態において、インダクタパターン部400は、アルミニウムの金属薄膜からなる。一般的に本実施の形態における薄膜は3μm以上35μm以下の厚みから形成される。樹脂フィルム上に金属薄膜を形成したものを用いてもよい。インダクタパターン部400は、金属薄膜に開口部を穿設することにより形成することができる。また、インダクタパターン部400は、エッチングまたはパターン印刷等の手法によって形成される。 In this embodiment, the inductor pattern portion 400 is made of an aluminum metal thin film. Generally, the thin film in this embodiment is formed with a thickness of 3 μm or more and 35 μm or less. You may use what formed the metal thin film on the resin film. The inductor pattern part 400 can be formed by drilling an opening in a metal thin film. The inductor pattern portion 400 is formed by a technique such as etching or pattern printing.
 本実施の形態において、インダクタパターン部400の内部面積Sにより、インダクタパターン部400のインピーダンスを一定にすることができる。 In the present embodiment, the impedance of the inductor pattern portion 400 can be made constant by the internal area S of the inductor pattern portion 400.
(ICチップ500)
 ICチップ500は、RFタグアンテナ200の上面側(電位差形成部220と同一平面上)のインダクタパターン部400の辺403および辺409を架け渡すように配置されている。ICチップ500は、RFタグアンテナ200の板状アンテナが受信した電波に基づいて動作する。
 具体的に本実施の形態にかかるICチップ500は、まず、読取装置から送信される搬送波の一部を整流して、ICチップ500自身が、動作するために必要な電源電圧を生成する。そして、ICチップ500は、生成した電源電圧によって、ICチップ500内の制御用の論理回路、商品の固有情報等が格納された不揮発性メモリを動作させる。
 また、ICチップ500は、読取装置(リーダ)との間でデータの送受信を行うための通信回路等を動作させる。
(IC chip 500)
The IC chip 500 is arranged so as to bridge the side 403 and the side 409 of the inductor pattern part 400 on the upper surface side of the RF tag antenna 200 (on the same plane as the potential difference forming part 220). The IC chip 500 operates based on radio waves received by the plate antenna of the RF tag antenna 200.
Specifically, the IC chip 500 according to the present embodiment first rectifies a part of the carrier wave transmitted from the reading device, and the IC chip 500 itself generates a power supply voltage necessary for operation. Then, the IC chip 500 operates a non-volatile memory in which the control logic circuit in the IC chip 500, the unique information of the product, and the like are stored, according to the generated power supply voltage.
Further, the IC chip 500 operates a communication circuit for transmitting / receiving data to / from a reading device (reader).
(ケース600)
 ケース600は、帯状または矩形平板状の保持部610、帯状または矩形平板状のベース部650、折り目6L、孔6H、および差し込み部620を含む。本実施の形態で示すケース600は、樹脂フィルム、厚みの薄い樹脂板などの絶縁部材を切断加工して形成することができる。
 折り目6Lは保持部610とベース部650との間に形成され、この折り目6Lに沿って保持部610をベース部650に対して谷折りすることができる。折り目6Lは、例えば、図2に示すように、複数の短いスリットと、長いスリットとから構成することができる。差し込み部620は、保持部610の一端側に延出して設けられる。
(Case 600)
The case 600 includes a band-shaped or rectangular flat plate-shaped holding portion 610, a band-shaped or rectangular flat plate-shaped base portion 650, a fold 6L, a hole 6H, and an insertion portion 620. The case 600 shown in this embodiment can be formed by cutting an insulating member such as a resin film or a thin resin plate.
The fold 6L is formed between the holding portion 610 and the base portion 650, and the holding portion 610 can be valley-folded with respect to the base portion 650 along the fold 6L. For example, as shown in FIG. 2, the crease 6L can be composed of a plurality of short slits and long slits. The insertion part 620 is provided to extend to one end side of the holding part 610.
 以下に、ケース600の構成を詳細に説明する。
 図4から図6に示すように、ケース600は、RFタグアンテナ200を保持可能な保持部610と、保持部610に折り曲げ可能なベース部650とを有する。保持部610は、第1保持部611と、第1保持部611から連続して延設された第2保持部612とを有する。ベース部650は、第1ベース部651と、第1ベース部651から連続して延設された第2ベース部652とを有する。
Hereinafter, the configuration of the case 600 will be described in detail.
As shown in FIGS. 4 to 6, the case 600 includes a holding portion 610 that can hold the RF tag antenna 200 and a base portion 650 that can be bent to the holding portion 610. The holding unit 610 includes a first holding unit 611 and a second holding unit 612 extending continuously from the first holding unit 611. The base portion 650 includes a first base portion 651 and a second base portion 652 that extends continuously from the first base portion 651.
 第1保持部611と第1ベース部651とは接続されている。この第1保持部611と第1ベース部651とは、ほぼ同一幅、且つほぼ同一長さのほぼ同じサイズに形成されている。第2保持部612と第2ベース部652とは長いスリットによって分離している。
 第1保持部611と第1ベース部651とを谷折りすることにより、第1保持部611と第1ベース部651との間に配設されたRFタグアンテナ200のグランド部210が、第1保持部611と第1ベース部651との間に配置されるようになっている。
The first holding part 611 and the first base part 651 are connected. The first holding part 611 and the first base part 651 are formed in substantially the same size with substantially the same width and substantially the same length. The second holding part 612 and the second base part 652 are separated by a long slit.
By grounding the first holding part 611 and the first base part 651, the ground part 210 of the RF tag antenna 200 disposed between the first holding part 611 and the first base part 651 is It is arranged between the holding part 611 and the first base part 651.
 RFタグアンテナ200のグランド部210の幅寸法は、第1保持部611および第1ベース部651の幅寸法とほぼ同一であってもよく、やや小寸法に形成されていてもよい。グランド部210の長さ寸法は、第1保持部611および第1ベース部651の長さ寸法とほぼ同一であってもよく、やや小寸法に形成されていてもよい。
 RFタグアンテナ200の電位差形成部220(または電位差形成部を形成するための導電部材)は第2保持部612に接着剤などで貼着されている。
The width dimension of the ground part 210 of the RF tag antenna 200 may be substantially the same as the width dimension of the first holding part 611 and the first base part 651, or may be formed slightly smaller. The length dimension of the ground part 210 may be substantially the same as the length dimension of the first holding part 611 and the first base part 651, or may be formed slightly smaller.
The potential difference forming part 220 (or the conductive member for forming the potential difference forming part) of the RF tag antenna 200 is attached to the second holding part 612 with an adhesive or the like.
 第2ベース部652に切り欠き部(または孔)6Hが形成され、第2保持部612に凸部(または差し込み部)620が形成されている。凸部620を切り欠き部6Hに差し込み嵌合することにより、導電部材が付着した第2保持部612が第2ベース部652から離間した状態(両者の間に空気層が存在する状態)で配設されるため、タイヤの内周面に存在する樹脂材に対して離間した電位差形成部220が形成される。 A notch (or hole) 6H is formed in the second base portion 652, and a convex portion (or insertion portion) 620 is formed in the second holding portion 612. By inserting and fitting the convex portion 620 into the notch portion 6H, the second holding portion 612 to which the conductive member is attached is arranged in a state of being separated from the second base portion 652 (a state in which an air layer exists between them). Therefore, a potential difference forming portion 220 that is separated from the resin material existing on the inner peripheral surface of the tire is formed.
 上記差し込み部620の幅寸法は、保持部610の幅寸法よりもやや小寸法に形成されている。孔6Hは、ベース部650の一端側から所定の距離離間した位置に設けられる。孔6Hは、ベース部650の長手方向に対して直交する方向に長いスリットにて形成することができる。 The width of the insertion part 620 is slightly smaller than the width of the holding part 610. The hole 6H is provided at a position separated from the one end side of the base portion 650 by a predetermined distance. The hole 6H can be formed by a long slit in a direction orthogonal to the longitudinal direction of the base portion 650.
 図2に示すように、ケース600は、主にポリエチレンテレフタレートからなる厚みの薄い樹脂フィルムまたは樹脂板で形成することができる。なお、ポリエチレンテレフタレートの他に、ケース600としてポリイミド、ポリ塩化ビニル等の絶縁性のある素材または樹脂を1種または複数種用いてもよい。 As shown in FIG. 2, the case 600 can be formed of a thin resin film or resin plate mainly made of polyethylene terephthalate. In addition to polyethylene terephthalate, one or a plurality of insulating materials or resins such as polyimide and polyvinyl chloride may be used as the case 600.
 ケース600は、ICチップ500、グランド部210および電位差形成部220を保護するためのものである。そのため、ケース600は、数マイクロメートル以上数百マイクロメートル以下の厚みであることが好ましく、数十マイクロメートル程度の厚みであることがより好ましい。
 本実施の形態においては、ケース600を設けることとしているが、これに限定されず、ケース600を設けなくてもよく、他の絶縁被膜処理を用いてもよい。その場合も、絶縁被膜層の厚みは数マイクロメートル以上数百マイクロメートル以下であることが好ましく、数十マイクロメートル程度の厚みであることがより好ましい。
The case 600 is for protecting the IC chip 500, the ground part 210, and the potential difference forming part 220. Therefore, the case 600 preferably has a thickness of several micrometers to several hundred micrometers, and more preferably has a thickness of about several tens of micrometers.
In the present embodiment, the case 600 is provided. However, the present invention is not limited to this, and the case 600 may not be provided, and another insulating coating process may be used. Also in that case, the thickness of the insulating coating layer is preferably several micrometers or more and several hundred micrometers or less, and more preferably about several tens of micrometers.
 次に、図4、図5、図6は、図2から図1に示すRFタグ100を形成する一例を示す模式的組み立て図である。 Next, FIG. 4, FIG. 5, and FIG. 6 are schematic assembly views showing an example of forming the RF tag 100 shown in FIG. 2 to FIG.
 図4に示すように、ケース600のRFタグアンテナ200を保持する保持部610に、ICチップ500を設けたRFタグアンテナ200を取り付ける。この場合、接着剤を用いてRFタグアンテナ200を保持部610に接着固定してもよく、ICチップ500を設けたRFタグアンテナ200を、そのままケース600に配置させてもよい。ケース600の保持部610のサイズとRFタグアンテナ200のサイズとは、ほぼ同じに設定することが好ましい。 As shown in FIG. 4, the RF tag antenna 200 provided with the IC chip 500 is attached to the holding portion 610 that holds the RF tag antenna 200 of the case 600. In this case, the RF tag antenna 200 may be bonded and fixed to the holding portion 610 using an adhesive, and the RF tag antenna 200 provided with the IC chip 500 may be disposed in the case 600 as it is. The size of the holding portion 610 of the case 600 and the size of the RF tag antenna 200 are preferably set to be approximately the same.
 次に、図5に示すように、ケース600の一部の保持部610とベース部650との間に形成された折り目6Lを谷折りにして、ケース600のベース部650にRFタグアンテナ200を保持部610との間でサンドイッチ(挟み込み)して固定する。
 ここで、ベース部650は第1ベース部651と第2ベース部652とを有し、RFタグアンテナ200の保持部610は第1保持部611と第2保持部612とを有する。ベース部650の第1ベース部651と第2ベース部652との境界に境界線653が形成され、RFタグアンテナ200の保持部610の第1保持部611と第2保持部612との間に上記境界線653に連続する境界線613が形成されている。第1ベース部651と第1保持部611との長手方向の寸法は同一に設定されている。第2保持部612の長手方向の寸法は、境界線653と孔6Hとの間隔よりもやや大きく設定されている。また、図5に示すように、第1ベース部651と第1保持部611とは連続しているが、第2ベース部652と第2保持部612とは分離している。
Next, as shown in FIG. 5, the fold line 6 </ b> L formed between a part of the holding portions 610 and the base portion 650 of the case 600 is folded, and the RF tag antenna 200 is attached to the base portion 650 of the case 600. Sandwich between the holding part 610 and fix.
Here, the base unit 650 includes a first base unit 651 and a second base unit 652, and the holding unit 610 of the RF tag antenna 200 includes a first holding unit 611 and a second holding unit 612. A boundary line 653 is formed at the boundary between the first base portion 651 and the second base portion 652 of the base portion 650, and is between the first holding portion 611 and the second holding portion 612 of the holding portion 610 of the RF tag antenna 200. A boundary line 613 continuous with the boundary line 653 is formed. The longitudinal dimension of the first base part 651 and the first holding part 611 is set to be the same. The dimension in the longitudinal direction of the second holding part 612 is set to be slightly larger than the distance between the boundary line 653 and the hole 6H. Further, as shown in FIG. 5, the first base portion 651 and the first holding portion 611 are continuous, but the second base portion 652 and the second holding portion 612 are separated.
 上記操作によって、RFタグアンテナ200のグランド部210が第1ベース部651と第1保持部611との間に挟まれ(好ましくは接着され)、RFタグアンテナ200の電位差形成部220を構成する導電部材はケース600の第2保持部612に貼着される。ケース600の第2ベース部652は第2保持部612と分離した状態である。
 続いて、図6に示すように、ケース600の差し込み部620をケース600の孔6Hに矢印Yの方向に、差し込む。
As a result of the above operation, the ground portion 210 of the RF tag antenna 200 is sandwiched (preferably bonded) between the first base portion 651 and the first holding portion 611, and the conductive material constituting the potential difference forming portion 220 of the RF tag antenna 200. The member is attached to the second holding part 612 of the case 600. The second base portion 652 of the case 600 is in a state separated from the second holding portion 612.
Subsequently, as shown in FIG. 6, the insertion portion 620 of the case 600 is inserted into the hole 6 </ b> H of the case 600 in the direction of arrow Y.
 その結果、図1に示すRFタグ100が形成される。この場合、第2保持部612の長手方向の寸法は境界線653と孔6Hとの距離よりも長いので、差し込み部620を孔6Hに差し込むことで、図1に示したように電位差形成部220がケース600のベース部650から湾曲し、いわゆるアーチ形状を容易に形成することができる。このようにして、ベース部650と電位差形成部220との間に空間部が形成される。ケース600は弾性を有し、比較的こしのある部材で形成されているため、電位差形成部220のアーチ形状を保持することができる。 As a result, the RF tag 100 shown in FIG. 1 is formed. In this case, since the dimension in the longitudinal direction of the second holding part 612 is longer than the distance between the boundary line 653 and the hole 6H, the potential difference forming part 220 is inserted as shown in FIG. 1 by inserting the insertion part 620 into the hole 6H. Is curved from the base portion 650 of the case 600, and a so-called arch shape can be easily formed. In this way, a space is formed between the base portion 650 and the potential difference forming portion 220. Since the case 600 has elasticity and is formed of a relatively stiff member, the arch shape of the potential difference forming part 220 can be maintained.
 次に図7は、上記構成のRFタグ100の使用態様の一例を示す模式図であり、図8は、RFタグ100の使用態様の他の例を示す模式図である。 Next, FIG. 7 is a schematic diagram illustrating an example of a usage mode of the RF tag 100 having the above configuration, and FIG. 8 is a schematic diagram illustrating another example of a usage mode of the RF tag 100.
 図7に示す使用態様は、炭素粉末および/または炭素繊維(特に、カーボンブラック)を含有した静電気除去シート910に、本発明にかかるRFタグ100を設けたものである。静電気除去シート910は、樹脂、エラストマー、および/またはゴムなどを含有することができる。RFタグ100は接着剤などを使用して静電気除去シート910に貼着することができる。その結果、本発明にかかるRFタグ100は、炭素粉末の影響を受けることなく、送受信を行うことができる。
 また、複数の静電気除去シート910が積層して配置された場合であっても、電位差形成部220により電位差が設けられているので、RFタグ100は、送受信を行うことができる。当該送受信を行うことができる理由については、後述する。
In the usage mode shown in FIG. 7, the RF tag 100 according to the present invention is provided on a static electricity removing sheet 910 containing carbon powder and / or carbon fiber (particularly, carbon black). The static eliminating sheet 910 can contain a resin, an elastomer, and / or rubber. The RF tag 100 can be attached to the static eliminating sheet 910 using an adhesive or the like. As a result, the RF tag 100 according to the present invention can perform transmission and reception without being affected by the carbon powder.
Further, even when a plurality of static electricity removal sheets 910 are stacked and disposed, the potential difference is provided by the potential difference forming unit 220, so that the RF tag 100 can transmit and receive. The reason why the transmission / reception can be performed will be described later.
 また、図8に示す使用態様は、炭素粉末および/または炭素繊維(特に、カーボンブラック)を含有したタイヤ(自動車、自転車、オートバイ等)920の内側に、RFタグ100を設けたものである。RFタグ100をタイヤ920の内側に設けるには、通常はRFタグの長手方向がタイヤ920の円周方向に沿うように配置する。しかし、必要に応じてRFタグの長手方向がタイヤ920の円周方向に対して傾斜あるいは直交するように配置してもよい。 In the usage mode shown in FIG. 8, the RF tag 100 is provided inside a tire (automobile, bicycle, motorcycle, etc.) 920 containing carbon powder and / or carbon fiber (particularly carbon black). In order to provide the RF tag 100 on the inner side of the tire 920, the RF tag 100 is usually arranged so that the longitudinal direction of the RF tag is along the circumferential direction of the tire 920. However, the RF tag may be arranged so that the longitudinal direction of the RF tag is inclined or orthogonal to the circumferential direction of the tire 920 as necessary.
 タイヤ920は、炭素粉末以外に、従来のゴム(天然ゴム、合成ゴム)、加硫剤、充填剤などを含有することができる。一般的には、炭素粉末は、ゴム100重量部に対して、40重量部以上60重量部以下、特に、45重量部以上55重量部以下配合されている。具体的には、ブタジエンゴム30重量%以上90重量%以下を含むジエン系ゴム100重量部に対し、カーボンブラックを30重量部以上60重量部以下、加硫剤、充填剤などを配合したタイヤ用ゴム組成物を加硫してタイヤを製造することができる。 The tire 920 can contain conventional rubber (natural rubber, synthetic rubber), a vulcanizing agent, a filler and the like in addition to the carbon powder. Generally, the carbon powder is blended in an amount of 40 to 60 parts by weight, particularly 45 to 55 parts by weight, based on 100 parts by weight of rubber. Specifically, for tires in which 30 parts by weight or more and 60 parts by weight or less of carbon black is mixed with 100 parts by weight of diene rubber containing 30% by weight or more and 90% by weight or less of butadiene rubber, a vulcanizing agent, a filler and the like. A rubber composition can be vulcanized to produce a tire.
 RFタグ100は接着剤などを使用してタイヤ920に貼着することができる。なお、タイヤ920は、回転して使用されるので、タイヤ920の内側のタイヤ920の幅方向の中央部に取り付けられることが好ましい。
 電位差形成部220がケース600のベース部650から湾曲した状態で、RFタグ100がタイヤ920に取り付けられるので、タイヤ920が高速回転および振動した場合でも、電位差形成部220の振動および変形が防止される。
 さらに、タイヤ920は、通常横置きで、かつ積層して保管されるが、本発明にかかるRFタグ100は、電位差形成部220により電位差が設けられているので、RFタグ100は、送受信を行うことができる。また、タイヤ920に含有された炭素粉末(カーボンブラック)またはタイヤ自体、さらに、スチールワイヤが含まれている場合には、スチールワイヤをアンテナとして利用することができる。
The RF tag 100 can be attached to the tire 920 using an adhesive or the like. In addition, since the tire 920 is used by being rotated, it is preferable that the tire 920 is attached to the center portion in the width direction of the tire 920 inside the tire 920.
Since the RF tag 100 is attached to the tire 920 in a state where the potential difference forming portion 220 is curved from the base portion 650 of the case 600, vibration and deformation of the potential difference forming portion 220 are prevented even when the tire 920 rotates and vibrates at high speed. The
Further, although the tire 920 is normally stored horizontally and stacked, the RF tag 100 according to the present invention is provided with a potential difference by the potential difference forming unit 220. Therefore, the RF tag 100 performs transmission and reception. be able to. Further, in the case where carbon powder (carbon black) contained in the tire 920 or the tire itself and further steel wire are included, the steel wire can be used as an antenna.
 次に、図9は、電位差形成部220を設ける理由を説明するための模式的断面図である。図9においては、図8に示したタイヤ920にRFタグ100を設けた使用態様について説明を行う。また、図9の例においては、タイヤ920内に金属製のスチールワイヤ925が内蔵されたものとする。 Next, FIG. 9 is a schematic cross-sectional view for explaining the reason why the potential difference forming part 220 is provided. In FIG. 9, the usage mode in which the RF tag 100 is provided on the tire 920 shown in FIG. 8 will be described. Further, in the example of FIG. 9, it is assumed that a metal steel wire 925 is incorporated in the tire 920.
 まず、ここで、一般的なタイヤ920について説明を行う。一般的なタイヤ920に使用されている硬質ゴムは炭素粉末を加えて加硫することで硬度を保っている。また、炭素粉末は、電波吸収体としても多く利用されることが知られている。したがって、タイヤ920の内部は、電波吸収体と、スチールワイヤ920で覆われた電波シールドと、を含むものとなる。その結果、タイヤ920等の炭素粉末(カーボンブラック)を含む樹脂材においては、RFタグの送受信が困難であることがわかる。したがって、RFタグ100をタイヤ920の内部に設置すると、タイヤ920に含まれる炭素粉末の影響によって、RFタグ100はタイヤ920の外部との通信が困難となる。 First, a general tire 920 will be described here. Hard rubber used for a general tire 920 maintains hardness by adding carbon powder and vulcanizing. It is also known that carbon powder is often used as a radio wave absorber. Therefore, the inside of the tire 920 includes a radio wave absorber and a radio wave shield covered with the steel wire 920. As a result, it is found that it is difficult to transmit and receive the RF tag in a resin material containing carbon powder (carbon black) such as the tire 920. Therefore, when the RF tag 100 is installed inside the tire 920, it becomes difficult for the RF tag 100 to communicate with the outside of the tire 920 due to the influence of the carbon powder contained in the tire 920.
 発明者は、一般的なタイヤ920の内部における減衰量を計測した。その結果、減衰量は、タイヤ2段積載で積み重ねた場合、9dB、タイヤ3段積載で積み重ねた場合、16dB、タイヤ4段積載で積み重ねた場合、23dBとなった。 The inventor measured the amount of attenuation inside a general tire 920. As a result, the amount of attenuation was 9 dB when stacked with two-tier tires, 16 dB when stacked with three-tier tires, and 23 dB when stacked with four-tier tires.
 すなわち、一般的なRFタグの受信感度が-10dBの場合、タイヤ920を3段積載、4段積載で積み重ねた場合、RFタグの動作感度に達せず通信ができなくなることがわかった。
 また、RFタグの受信感度が-20dBの場合、タイヤ920を4段積載で積み重ねた場合は、RFタグの動作感度に達せず通信できなくなるという問題が生じてしまうことがわかった。
That is, when the reception sensitivity of a general RF tag is −10 dB, it has been found that when the tires 920 are stacked in a three-level stack and a four-level stack, the operation sensitivity of the RF tag does not reach and communication becomes impossible.
In addition, when the reception sensitivity of the RF tag is −20 dB, it has been found that when the tires 920 are stacked in a four-stage stack, the operation sensitivity of the RF tag does not reach and communication becomes impossible.
 さらに、一般的なタイヤ920では、タイヤ920自身に含まれる炭素粉末(カーボンブラック)のばらつき度合いにより直流抵抗930(図9参照)が、数十キロオームから数百キロオームの間でばらつく。その結果、比誘電率が変化し、タイヤ920毎に、波長変動を補う必要があることがわかった。 Furthermore, in a general tire 920, the DC resistance 930 (see FIG. 9) varies between several tens of kilohms and several hundreds of kilohms depending on the degree of dispersion of the carbon powder (carbon black) contained in the tire 920 itself. As a result, it was found that the relative permittivity changes and it is necessary to compensate for the wavelength fluctuation for each tire 920.
 以上のことから、本発明者は、タイヤ920自身をアンテナ代わりにすることでRFタグ100に電波の信号を取り込む技術思想を見出し、実現した。また、タイヤ920自身だけでなく、スチールワイヤ925もアンテナ代わりにすることでRFタグ100に電波の信号を取り込む技術思想を見出し、実現した。以下、その点について説明を行う。 From the above, the present inventor has found and realized a technical idea of capturing a radio signal into the RF tag 100 by using the tire 920 itself as an antenna. In addition to the tire 920 itself, the steel wire 925 is replaced with an antenna, and the technical idea of capturing a radio signal into the RF tag 100 has been found and realized. This will be described below.
 図9に示すように、本発明にかかるRFタグ100のグランド部210をタイヤ920の内面921に取り付けた場合、電位差形成部220と内面921の間にコンデンサCを形成することができる。
 その結果、タイヤ920の内面921から離間して設けられた電位差形成部220の部分を高インピーダンスにすることができる。
 すなわち、タイヤ920の内面921と電位差形成部220との電位差が、10キロオーム以上1メガオーム以下の範囲に設定することが好ましい。換言すれば、タイヤ920の内面921と電位差形成部220との間に形成された空気層のレジスタンスは、10キロオーム以上1メガオーム以下の範囲に設定することが好ましい。
As shown in FIG. 9, when the ground portion 210 of the RF tag 100 according to the present invention is attached to the inner surface 921 of the tire 920, a capacitor C can be formed between the potential difference forming portion 220 and the inner surface 921.
As a result, the portion of the potential difference forming portion 220 that is provided apart from the inner surface 921 of the tire 920 can have high impedance.
That is, it is preferable to set the potential difference between the inner surface 921 of the tire 920 and the potential difference forming portion 220 in a range of 10 kilohms or more and 1 megaohms or less. In other words, the resistance of the air layer formed between the inner surface 921 of the tire 920 and the potential difference forming part 220 is preferably set in the range of 10 kilohms or more and 1 megaohms or less.
 したがって、インダクタパターン部400のリアクタンスLと、コンデンサCとから共振回路を形成することができ、タイヤ920に含有された炭素粉末(カーボンブラック)によって、RFタグ100のエレメント長に、影響を来すことを防止することができる。
 その結果、グランド部210により炭素粉末(カーボンブラック)、またはスチールワイヤ925をアンテナとしてRFタグ100のICチップ500に電界として取り込むことができる。
Therefore, a resonant circuit can be formed from the reactance L of the inductor pattern portion 400 and the capacitor C, and the carbon powder (carbon black) contained in the tire 920 affects the element length of the RF tag 100. This can be prevented.
As a result, the ground portion 210 can capture the carbon powder (carbon black) or the steel wire 925 as an antenna into the IC chip 500 of the RF tag 100 as an electric field.
 すなわち、リアクタンスLとコンデンサCを形成することによって、タイヤ920の炭素粉末またはスチールワイヤをアンテナにすることができるため、タイヤ920の内部にRFタグ100を設置した場合でも、タイヤ920の外部と通信不良が生じにくくすることができる。さらに、コンデンサCを高インピーダンスにすることによって、タイヤごとに異なる炭素粉末のばらつきの影響を最小限にすることができる。 That is, by forming the reactance L and the capacitor C, the carbon powder or steel wire of the tire 920 can be used as an antenna. Therefore, even when the RF tag 100 is installed inside the tire 920, communication with the outside of the tire 920 is possible. Defects can be made difficult to occur. Furthermore, by making the capacitor C have a high impedance, it is possible to minimize the influence of the variation in carbon powder that varies from tire to tire.
 また、本実施の形態においては、電位差形成部220のエレメント長は、辺L1、辺L2(図2参照)の長さの2倍、および、切り欠き部420の辺401、辺402、辺403、辺409、辺410、辺411の長さの合計からなる。当該電位差形成部220のエレメント長は、対象周波数λに対して、λ/4または5λ/8が最適である。 In the present embodiment, the element length of the potential difference forming unit 220 is twice the length of the side L1 and the side L2 (see FIG. 2), and the side 401, the side 402, and the side 403 of the notch 420. , Side 409, side 410, and side 411. The optimum element length of the potential difference forming unit 220 is λ / 4 or 5λ / 8 with respect to the target frequency λ.
 本実施の形態において、エレメント長は、使用する周波数の波長λの1/4の長さに設計した。なお、エレメント長は、波長λの5/8であってもよい。波長λは、伝搬速度(光速(c))/周波数(F)により算出できる。
 具体的に周波数が920MHzの場合、伝搬速度(光速(c))を300Mm/sとし、値Tは、値T=(300÷920MHz)/4≒81.5mmとなる。
 この場合、エレメント長が81.5mmとなるように各辺の長さを調整する。なお、当該エレメント長は、近似値であるので、値の数値自体が±5%前後の誤差を有してもよい。RFタグ100の読取距離が短くなるが、調整により仕様に適応させることができるからである。
In the present embodiment, the element length is designed to be ¼ of the wavelength λ of the frequency to be used. The element length may be 5/8 of the wavelength λ. The wavelength λ can be calculated by the propagation speed (light speed (c)) / frequency (F).
Specifically, when the frequency is 920 MHz, the propagation speed (the speed of light (c)) is 300 Mm / s, and the value T is the value T = (300 ÷ 920 MHz) /4≈81.5 mm.
In this case, the length of each side is adjusted so that the element length is 81.5 mm. Since the element length is an approximate value, the numerical value itself may have an error of around ± 5%. This is because the reading distance of the RF tag 100 is shortened, but can be adapted to the specification by adjustment.
 図10から図13は、図1のRFタグ100のさらに他の例を示す模式図である。
 図10に示すように、RFタグ100は、電位差形成部220が、第1電位差形成部221、第2電位差形成部222、第3電位差形成部223を有し、台形の一部を形成する形状からなってもよい。電位差形成部220は、金属薄板を複数回折り曲げることによって形成することができる。金属薄板は樹脂フィルム上に積層されていてもよい。
 また、図11に示すように、RFタグ100の電位差形成部220は、第4電位差形成部224、第5電位差形成部225を有し、三角形の一部を形成する形状からなってもよい。電位差形成部220は、金属薄板、または樹脂フィルム上に金属薄板が積層された積層体を複数回折り曲げることによって形成することができる。
10 to 13 are schematic views showing still another example of the RF tag 100 of FIG.
As shown in FIG. 10, the RF tag 100 has a shape in which the potential difference forming unit 220 includes a first potential difference forming unit 221, a second potential difference forming unit 222, and a third potential difference forming unit 223, and forms a part of a trapezoid. It may consist of. The potential difference forming unit 220 can be formed by bending a metal thin plate multiple times. The metal thin plate may be laminated on the resin film.
Further, as shown in FIG. 11, the potential difference forming unit 220 of the RF tag 100 may include a fourth potential difference forming unit 224 and a fifth potential difference forming unit 225, and may have a shape forming a part of a triangle. The potential difference forming unit 220 can be formed by bending a plurality of metal thin plates or a laminate in which metal thin plates are laminated on a resin film.
 さらに、図12に示すように、RFタグ100の電位差形成部220は、第6電位差形成部226、第7電位差形成部227、第8電位差形成部228、第9電位差形成部229を有し、多角形の一部を形成する形状からなってもよい。電位差形成部220は、金属薄板、または樹脂フィルム上に金属薄板が積層された積層体を複数回折り曲げることによって形成することができる。 Furthermore, as shown in FIG. 12, the potential difference forming unit 220 of the RF tag 100 includes a sixth potential difference forming unit 226, a seventh potential difference forming unit 227, an eighth potential difference forming unit 228, and a ninth potential difference forming unit 229. The shape may form a part of a polygon. The potential difference forming unit 220 can be formed by bending a plurality of metal thin plates or a laminate in which metal thin plates are laminated on a resin film.
 また、図13に示すように、RFタグ100の電位差形成部220は、第10電位差形成部230、第11電位差形成部231、および電位差形成部220とグランド部210との間の空間部に配置されたスペーサ232を含んでも良い。
 スペーサ232は、軽量で、かつ柔軟性な耐熱性部材から構成することが好ましい。例えば、発泡部材(発泡スチロール)等が好ましい。
 本来は、スペーサ232の代わりに空気を用いることが最も好ましいが、電位差形成部220の所定の間隔維持および接触を防止するため、90容量%以上空気を有する発泡スチロールを利用することが好ましい。さらに好ましくは95容量%以上99容量%以下の空気を有する独立発泡の発泡スチロールである。
Further, as shown in FIG. 13, the potential difference forming unit 220 of the RF tag 100 is arranged in the tenth potential difference forming unit 230, the eleventh potential difference forming unit 231, and the space between the potential difference forming unit 220 and the ground unit 210. The spacer 232 may be included.
The spacer 232 is preferably made of a heat-resistant member that is lightweight and flexible. For example, a foam member (foamed polystyrene) or the like is preferable.
Originally, it is most preferable to use air instead of the spacer 232, but in order to prevent the potential difference forming part 220 from being maintained at a predetermined interval and contacting it, it is preferable to use a polystyrene foam having 90% by volume or more of air. More preferably, it is an independent foamed polystyrene having 95 volume% or more and 99 volume% or less of air.
 その結果、電位差形成部220の空間距離を所定の間隔に維持することができる。また、スペーサ232の比誘電率は、1%以上20%以下の範囲内であることが望ましい。さらに望ましくは1.01%以上2.70%以下であり、最も望ましくは1.01%以上2.50%以下であり、さらに最も望ましくは1.02%以上1.08%以下である。スペーサ232として発泡スチロールを用いる場合、発泡スチロールの発泡倍率は15倍以上60倍以下のものが好ましい(この場合、比誘電率は1.50%以上2.50%以下となる)。 As a result, the spatial distance of the potential difference forming unit 220 can be maintained at a predetermined interval. The relative dielectric constant of the spacer 232 is desirably in the range of 1% to 20%. More preferably, it is 1.01% or more and 2.70% or less, most preferably 1.01% or more and 2.50% or less, and most preferably 1.02% or more and 1.08% or less. When a polystyrene foam is used as the spacer 232, the foaming ratio of the polystyrene foam is preferably 15 to 60 times (in this case, the relative dielectric constant is 1.50% to 2.50%).
 一方、電位差形成部220として発泡スチロール等の比誘電率が1%以上2,7%以下(特に1.50%以上2.50%以下)の材質を用いた場合には、電位差形成部220の開口面積を大きく維持することができ、通信距離を数メートルから数十メートルまで延ばすことができる。 On the other hand, when a material having a relative dielectric constant of 1% or more and 2,7% or less (particularly 1.50% or more and 2.50% or less) such as styrene foam is used as the potential difference forming part 220, the opening of the potential difference forming part 220 is opened. The area can be kept large, and the communication distance can be extended from several meters to several tens of meters.
 なお、本実施の形態において絶縁基材140は、発泡スチロールからなることとしているが、これに限定されず、絶縁体であればよく、ポリエチレン、ポリイミド、薄物発泡体(ボラ―ラ)等、絶縁性を有する他の発泡体または素材を用いてもよい。 In the present embodiment, the insulating base material 140 is made of foamed polystyrene, but is not limited to this, and may be an insulating material such as polyethylene, polyimide, thin foam (bola), or the like. Other foams or materials having the following may be used.
 なお、上記の実施の形態においては、スペーサ232として発泡スチロールを用いる場合について説明したが、誘電体を用いてもよい。例えば、誘電体として、樹脂、セラミック、紙等であってもよい。さらに、スペーサ232としてセラミック(比誘電率が5%を超え9%以下)を用いた場合には、電位差形成部220の開口面積が小さくなり、通信距離が低減されるが、RFタグ100を小型化することができる。
 スペーサ232は、発泡形状でもよく、空洞が1または多数形成されていてもよく、異種の材質が混合または積層された複合材料からなってもよい。
In the above embodiment, the case where the foamed polystyrene is used as the spacer 232 has been described, but a dielectric may be used. For example, the dielectric may be resin, ceramic, paper, or the like. Further, when ceramic (relative permittivity is more than 5% and not more than 9%) is used as the spacer 232, the opening area of the potential difference forming unit 220 is reduced and the communication distance is reduced, but the RF tag 100 is reduced in size. Can be
The spacer 232 may have a foamed shape, may have one or many cavities, and may be made of a composite material in which different kinds of materials are mixed or laminated.
 なお、本実施の形態においては、RFタグ100をケース600の差し込み部620を孔6Hに挿入することにより電位差形成部220を形成することとしているが、これに限定されず、接着等により電位差形成部220を形成してもよい。また、導電性接着剤または接着層450を用いることとしているが、これに限定されず、導電性の両面テープ、半田、1液性または2液性のエポキシ樹脂等の任意の導電性の接着材であってもよい。 In the present embodiment, the potential difference forming portion 220 is formed by inserting the RF tag 100 into the hole 6H of the insertion portion 620 of the case 600. However, the present invention is not limited to this, and the potential difference is formed by adhesion or the like. The portion 220 may be formed. In addition, although a conductive adhesive or an adhesive layer 450 is used, the present invention is not limited to this, and any conductive adhesive such as a conductive double-sided tape, solder, one-component or two-component epoxy resin, etc. It may be.
 また、電位差形成部220とケース650との間を空間形成する、としているが、これに限定されず、スペーサ232と同様の部材または軽量で、かつ柔軟性な耐熱性部材で空間を埋設する、または枠組みを形成する、等任意の手法を用いて、電位差形成部220を形成してもよい。 Further, the space between the potential difference forming part 220 and the case 650 is formed, but the present invention is not limited to this, and the space is embedded with a member similar to the spacer 232 or a lightweight and flexible heat-resistant member. Alternatively, the potential difference forming unit 220 may be formed by using any method such as forming a frame.
(他の実施例)
 図14は、RFタグ付きスポンジ部材の一例を示す模式図であり、図15は、RFタグ付きスポンジ部材の一例を示す模式的断面図であり、図16は、図15のA-A線断面図であり、図17は、RFタグ付き静音タイヤ920の一例を示す模式図である。
(Other examples)
14 is a schematic view showing an example of a sponge member with an RF tag, FIG. 15 is a schematic cross-sectional view showing an example of a sponge member with an RF tag, and FIG. 16 is a cross-sectional view taken along line AA in FIG. FIG. 17 is a schematic diagram showing an example of a silent tire 920 with an RF tag.
 図14から図16に示すように、RFタグ付きスポンジ部材は、長尺なスポンジ部材800とRFタグ100とを有する。スポンジ部材800の一部にRFタグ100が内蔵されている。すなわち、スポンジ部材800とRFタグ100とが一体化されている。 14 to 16, the sponge member with an RF tag includes a long sponge member 800 and an RF tag 100. The RF tag 100 is built in a part of the sponge member 800. That is, the sponge member 800 and the RF tag 100 are integrated.
 スポンジ部材800のタイヤ側の一部にRFタグ100を装着できる程度の凹部(装着部)が形成されており、凹部にRFタグ100を装着することでスポンジ部材800とRFタグ100とを一体化することができる。
 RFタグ100は接着剤を用いてスポンジ部材800に接着させてもよく、あるいは物理的な凹凸の嵌合、係止などによってRFタグ100をスポンジ部材800に取付けてもよい。
A recess (mounting portion) is formed in a part of the sponge member 800 on the tire side so that the RF tag 100 can be mounted, and the sponge member 800 and the RF tag 100 are integrated by mounting the RF tag 100 in the recess. can do.
The RF tag 100 may be adhered to the sponge member 800 using an adhesive, or the RF tag 100 may be attached to the sponge member 800 by fitting or locking of physical unevenness.
 RFタグ100をスポンジ部材800に取付けると、スポンジ部材800のタイヤ側の底面とRFタグ100のグランド部210(およびベース部650)とはほぼ面一となる。RFタグ100が付いたスポンジ部材800をタイヤ内面に取り付けた場合には、RFタグ100のグランド部210がタイヤ内面側に接触する形態で配置される。グランド部210はタイヤ内面に接着剤層などの絶縁層を介して接触し、または絶縁層を介することなく直接に接触する。 When the RF tag 100 is attached to the sponge member 800, the tire-side bottom surface of the sponge member 800 and the ground portion 210 (and the base portion 650) of the RF tag 100 are substantially flush with each other. When the sponge member 800 with the RF tag 100 is attached to the inner surface of the tire, the ground portion 210 of the RF tag 100 is arranged in contact with the inner surface of the tire. The ground portion 210 is in contact with the inner surface of the tire via an insulating layer such as an adhesive layer, or directly in contact with no insulating layer.
 スポンジ部材800を製造するには、長尺のスポンジ部材をタイヤの内周寸法に合うよう適宜寸法に切断し、製造することができる。その場合、長尺のスポンジ部材には予め複数のRFタグ100が所定の間隔毎に内蔵(装着)される。 In order to manufacture the sponge member 800, a long sponge member can be cut into appropriate dimensions so as to fit the inner peripheral dimensions of the tire. In that case, a plurality of RF tags 100 are built in (attached) to the long sponge member at predetermined intervals.
 図14から図17に示すように、スポンジ部材800は、タイヤ920の内側周方向(円周方向)の中央部の周囲長に応じてカットした後、タイヤ920の内面に接着剤などを用いて貼着される。タイヤ920の内面に貼着されたスポンジ部材800は、絶縁性の特殊吸音スポンジからなる。スポンジ部材800は、振動、騒音等を防止し、さらに吸音効果を有する。 As shown in FIG. 14 to FIG. 17, the sponge member 800 is cut according to the peripheral length of the central portion in the inner circumferential direction (circumferential direction) of the tire 920, and then an adhesive or the like is used on the inner surface of the tire 920. Affixed. The sponge member 800 attached to the inner surface of the tire 920 is made of an insulating special sound absorbing sponge. The sponge member 800 prevents vibration, noise, and the like, and further has a sound absorbing effect.
 すなわち、スポンジ部材800としては、耐熱性および吸音性を有する発泡成形体を使用することができる。スポンジ部材として発泡成形体を使用する場合は、シリコーンゴムスポンジ、フッ素ゴムスポンジ、ニトリルゴムスポンジ、アクリルゴムスポンジ、クロロプレンゴムスポンジ、エチレンプロピレンゴムスポンジ等が挙げられる。耐熱性等の観点からシリコーンゴムスポンジ、フッ素ゴムスポンジ、ニトリルゴムスポンジ及びアクリルゴムスポンジが好ましく使用される。 That is, as the sponge member 800, a foam molded body having heat resistance and sound absorption can be used. In the case where a foamed molded body is used as the sponge member, silicone rubber sponge, fluorine rubber sponge, nitrile rubber sponge, acrylic rubber sponge, chloroprene rubber sponge, ethylene propylene rubber sponge and the like can be mentioned. From the viewpoint of heat resistance, silicone rubber sponge, fluorine rubber sponge, nitrile rubber sponge and acrylic rubber sponge are preferably used.
 発泡成形体は多孔性の構造体であり、そのセル(孔)は連通孔であっても独立気泡であってもよい。発泡成形体のセルが連通孔である場合、発泡成形体の吸音性と遮音性が向上し、発泡成形体のセルが独立気泡である場合、遮音性が向上する。つまり、発泡成形体のセル(孔)を形成する薄膜が振動することで、音(ロードノイズ)のエネルギーが熱に変換され、ロードノイズが小さくなるものと推測される。 The foamed molded body is a porous structure, and the cells (holes) may be communication holes or closed cells. When the cell of the foam molded body is a communicating hole, the sound absorption and sound insulation of the foam molded body are improved, and when the cell of the foam molded body is closed cell, the sound insulating performance is improved. That is, it is presumed that the energy of sound (road noise) is converted into heat and the road noise is reduced by the vibration of the thin film forming the cells (holes) of the foam molded article.
 RFタグの付いたスポンジ部材800をタイヤの内面に接着剤を用いて取り付ける場合、使用する接着剤の種類は限定されず、発泡成形体の種類に応じて、合成ゴム系、シアノアクリレート系、エポキシ系、シリコーンゴム系の加硫接着剤やシランカップリング剤などから適宜選択することができる。 When the sponge member 800 with the RF tag is attached to the inner surface of the tire using an adhesive, the type of adhesive to be used is not limited, and depending on the type of foamed molded product, a synthetic rubber type, a cyanoacrylate type, an epoxy It can be appropriately selected from vulcanized adhesives based on silicone and silicone rubber, silane coupling agents and the like.
 なお、図14から図16においては、スポンジ部材800は2山構造のものを例示しているが、これに限定されず、1山構造、または他の任意の形状であってもよく、その他のタイヤ空洞共鳴音を効果的に低減するデバイスを含んでもよい。 In FIGS. 14 to 16, the sponge member 800 has a double mountain structure, but is not limited thereto, and may be a single mountain structure or any other shape. Devices that effectively reduce tire cavity resonance may be included.
 スポンジ部材800とRFタグ100が一体化されている結果、RFタグ100がスポンジ部材800と同時にタイヤ920の内側に取り付けられる。その結果、RFタグ100のタイヤへの取り付け作業を簡略化することができる。また、RFタグ100を個別にタイヤ920に取り付ける作業を省くことができ、低コスト化を実現することができる。 As a result of the sponge member 800 and the RF tag 100 being integrated, the RF tag 100 is attached to the inside of the tire 920 simultaneously with the sponge member 800. As a result, the operation of attaching the RF tag 100 to the tire can be simplified. Further, the work of attaching the RF tag 100 individually to the tire 920 can be omitted, and the cost can be reduced.
 以上のように、本発明にかかるRFタグ100においては、電位差形成部220によりグランド部210に対して電位差を形成することができる。また、カーボン粉末を含む樹脂材(タイヤ920等)は、高抵抗の導電体であるため、電波吸収が生じ、RFタグ100の通信ができない。しかしながら、本発明においては、電位差形成部220により高インピーダンスを発生させ、カーボン粉末を含む樹脂材をアンテナの一部として利用することができる。
 また、タイヤ920に使用する場合であっても、スチールワイヤ925をアンテナの一部として利用することができる。
As described above, in the RF tag 100 according to the present invention, the potential difference forming part 220 can form a potential difference with respect to the ground part 210. In addition, since the resin material including the carbon powder (tire 920 or the like) is a high-resistance conductor, radio wave absorption occurs and the RF tag 100 cannot communicate. However, in the present invention, high impedance is generated by the potential difference forming unit 220, and a resin material containing carbon powder can be used as a part of the antenna.
Further, even when the tire 920 is used, the steel wire 925 can be used as a part of the antenna.
 本発明においては、ICチップ500が『ICチップ』に相当し、RFタグアンテナ200が『RFタグアンテナ』に相当し、インダクタパターン部400が『インダクタパターン部』に相当し、グランド部210が『グランド部』に相当し、RFタグ100が『RFタグ』に相当し、電位差形成部220が『電位差形成部』に相当し、スペーサ232が『スペーサ』に相当し、RFタグ付き静音タイヤ920が『RFタグ付き静音タイヤ、RFタグ付きタイヤ』に相当し、スポンジ部材800が『RFタグ付きスポンジ部材』に相当し、ケース600が『ケース』に相当し、保持部610が『保持部』に相当し、ベース部650が『ベース部』に相当し、第1保持部611が『第1保持部』に相当し、第2保持部612が『第2保持部』に相当し、第1ベース部651が『第1ベース部』に相当し、第2ベース部652が『第2ベース部』に相当し、切り欠き部6H、孔6Hが『切り欠き部』に相当し、凸部620、差し込み部620が『凸部』に相当する。 In the present invention, the IC chip 500 corresponds to an “IC chip”, the RF tag antenna 200 corresponds to an “RF tag antenna”, the inductor pattern portion 400 corresponds to an “inductor pattern portion”, and the ground portion 210 corresponds to “ The RF tag 100 corresponds to the “RF tag”, the potential difference forming unit 220 corresponds to the “potential difference forming unit”, the spacer 232 corresponds to the “spacer”, and the silent tire 920 with the RF tag is provided. Corresponds to “silent tire with RF tag, tire with RF tag”, sponge member 800 corresponds to “sponge member with RF tag”, case 600 corresponds to “case”, and holding portion 610 becomes “holding portion”. The base portion 650 corresponds to the “base portion”, the first holding portion 611 corresponds to the “first holding portion”, and the second holding portion 612 corresponds to the “second holding portion”. The first base portion 651 corresponds to the “first base portion”, the second base portion 652 corresponds to the “second base portion”, and the notch portion 6H and the hole 6H correspond to the “notch portion”. The convex portion 620 and the insertion portion 620 correspond to the “convex portion”.
 本発明の好ましい一実施の形態は上記の通りであるが、本発明はそれだけに制限されない。本発明の精神と範囲から逸脱することのない様々な実施形態が他になされることは理解されよう。さらに、本実施形態において、本発明の構成による作用および効果を述べているが、これら作用および効果は、一例であり、本発明を限定するものではない。 The preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.
 100 RFタグ
 200 RFタグアンテナ
 210 グランド部
 220 電位差形成部
 232 スペーサ
 400 インダクタパターン部
 500 ICチップ
 600 ケース
 610 保持部
 611 第1保持部
 612 第2保持部
 620 凸部、差し込み部
 650 ベース部
 651 第1ベース部
 652 第2ベース部
 6H  切り欠き部、孔
 800 スポンジ部材
 920 タイヤ
 
 
 
DESCRIPTION OF SYMBOLS 100 RF tag 200 RF tag antenna 210 Ground part 220 Potential difference formation part 232 Spacer 400 Inductor pattern part 500 IC chip 600 Case 610 Holding part 611 1st holding part 612 2nd holding part 620 Convex part, insertion part 650 Base part 651 1st Base part 652 Second base part 6H Notch part, hole 800 Sponge member 920 Tire

Claims (17)

  1.  カーボン粉末を含む樹脂材に取り付けて用いられるRFタグアンテナであって、
     前記RFタグアンテナは、
     グランド部と、
     前記グランド部に対して電位差を形成する電位差形成部と、
     前記電位差形成部に形成されたインダクタパターン部と、を含む、RFタグアンテナ。
    An RF tag antenna used by being attached to a resin material containing carbon powder,
    The RF tag antenna is
    The ground,
    A potential difference forming part that forms a potential difference with respect to the ground part;
    An RF tag antenna including an inductor pattern portion formed in the potential difference forming portion.
  2.  前記電位差は、10kΩ以上1MΩ以下である、請求項1に記載のRFタグアンテナ。 The RF tag antenna according to claim 1, wherein the potential difference is 10 kΩ or more and 1 MΩ or less.
  3.  前記電位差形成部は、平板で形成された前記グランド部に対して、折曲部または湾曲部を有する平板からなる、請求項1または2に記載のRFタグアンテナ。 3. The RF tag antenna according to claim 1, wherein the potential difference forming portion is a flat plate having a bent portion or a curved portion with respect to the ground portion formed of a flat plate.
  4.  前記電位差形成部は、少なくとも一部に誘電体からなるスペーサを含む、請求項1から3のいずれか1項に記載のRFタグアンテナ。 The RF tag antenna according to any one of claims 1 to 3, wherein the potential difference forming portion includes a spacer made of a dielectric at least in part.
  5.  前記インダクタパターン部は、切り欠きにより形成された、請求項1から4のいずれか1項に記載のRFタグアンテナ。 The RF tag antenna according to any one of claims 1 to 4, wherein the inductor pattern portion is formed by a notch.
  6.  前記グランド部および前記電位差形成部は、連続した平板から形成される、請求項1から5のいずれか1項に記載のRFタグアンテナ。 The RF tag antenna according to any one of claims 1 to 5, wherein the ground part and the potential difference forming part are formed of a continuous flat plate.
  7.  前記電位差形成部のエレメント長は、対象となる波長λの場合に、λ/4または5λ/8からなる、請求項1から6のいずれか1項に記載のRFタグアンテナ。 The RF tag antenna according to any one of claims 1 to 6, wherein an element length of the potential difference forming unit is λ / 4 or 5λ / 8 in the case of a target wavelength λ.
  8.  請求項1から7のいずれかに記載のRFタグアンテナと、
     前記RFタグアンテナに設けられたICチップと、を含むRFタグ。
    An RF tag antenna according to any one of claims 1 to 7,
    An RF tag including an IC chip provided on the RF tag antenna.
  9.  前記RFタグアンテナを収納するためのケースをさらに含む、請求項8に記載のRFタグ。 The RF tag according to claim 8, further comprising a case for housing the RF tag antenna.
  10.  前記ケースは、前記RFタグアンテナを保持可能な保持部と、前記保持部に折り曲げ可能なベース部とを有し、
     前記保持部は、第1保持部と、前記第1保持部から延設された第2保持部とを有し、
     前記ベース部は、第1ベース部と、前記第1ベース部から延設された第2ベース部とを有し、
     前記第1保持部と前記第1ベース部とは接続され、前記第2保持部と前記第2ベース部とは分離しており、
     前記第1保持部と前記第1ベース部とを谷折りすることにより、前記第1保持部と前記第1ベース部との間に配設されたRFタグアンテナのグランド部が前記第1保持部と前記第1ベース部との間に配置されると共に、前記電位差形成部が前記第2保持部に貼着された、請求項9に記載のRFタグ。
    The case has a holding part that can hold the RF tag antenna, and a base part that can be bent to the holding part,
    The holding unit includes a first holding unit and a second holding unit extending from the first holding unit,
    The base portion includes a first base portion and a second base portion extending from the first base portion,
    The first holding part and the first base part are connected, and the second holding part and the second base part are separated,
    By grounding the first holding part and the first base part, the ground part of the RF tag antenna disposed between the first holding part and the first base part becomes the first holding part. The RF tag according to claim 9, wherein the RF tag is disposed between the first base portion and the first base portion, and the potential difference forming portion is attached to the second holding portion.
  11.  前記ケースは、前記第2ベース部に形成された切り欠き部と、前記第2保持部に形成された凸部とを有し、前記凸部を切り欠き部に嵌合することにより、前記電位差形成部が形成される、請求項9または10に記載のRFタグ。 The case has a cutout portion formed in the second base portion and a convex portion formed in the second holding portion, and the potential difference is obtained by fitting the convex portion into the cutout portion. The RF tag according to claim 9 or 10, wherein a forming portion is formed.
  12.  前記ケースの少なくとも一部に、前記ケースを前記樹脂材に取り付けるための粘着材、接着剤または両面テープが設けられた、請求項9から11のいずれか1項に記載のRFタグ。 The RF tag according to any one of claims 9 to 11, wherein an adhesive, an adhesive, or a double-sided tape for attaching the case to the resin material is provided on at least a part of the case.
  13.  請求項8から12のいずれかに記載のRFタグと、
     前記RFタグを装着する装着部が設けられたスポンジ部材と、を含むRFタグ付きスポンジ部材。
    An RF tag according to any one of claims 8 to 12,
    A sponge member with an RF tag, comprising: a sponge member provided with a mounting portion for mounting the RF tag.
  14.  請求項13記載のRFタグ付きスポンジ部材と、
     前記RFタグ付きスポンジ部材が取り付けられたカーボン粉末を含む樹脂材を含むタイヤと、を含む、RFタグ付き静音タイヤ。
    A sponge member with an RF tag according to claim 13,
    A silent tire with an RF tag, comprising: a tire including a resin material including carbon powder to which the sponge member with an RF tag is attached.
  15.  請求項8から12のいずれかに記載のRFタグと、
     前記RFタグが取り付けられたカーボン粉末を含む樹脂材を含むタイヤと、を含む、RFタグ付きタイヤ。
    An RF tag according to any one of claims 8 to 12,
    And a tire including a resin material including carbon powder to which the RF tag is attached.
  16.  前記グランド部は前記タイヤに接触し、前記電位差形成部は前記タイヤの内周面から離間している、請求項15に記載のRFタグ付きタイヤ。 The tire with an RF tag according to claim 15, wherein the ground portion is in contact with the tire, and the potential difference forming portion is separated from an inner peripheral surface of the tire.
  17.  請求項16に記載のRFタグ付きタイヤと、
     前記RFタグを装着する装着部が設けられたスポンジ部材と、を含む、RFタグ付き静音タイヤ。
     
    A tire with an RF tag according to claim 16,
    A silent tire with an RF tag, comprising: a sponge member provided with a mounting portion for mounting the RF tag.
PCT/JP2019/003540 2018-05-15 2019-02-01 Rf tag antenna and rf tag, sponge member with rf tag, silent tire with rf tag, tire with rf tag WO2019220695A1 (en)

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