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JP4204833B2 - tire - Google Patents

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Publication number
JP4204833B2
JP4204833B2 JP2002279197A JP2002279197A JP4204833B2 JP 4204833 B2 JP4204833 B2 JP 4204833B2 JP 2002279197 A JP2002279197 A JP 2002279197A JP 2002279197 A JP2002279197 A JP 2002279197A JP 4204833 B2 JP4204833 B2 JP 4204833B2
Authority
JP
Japan
Prior art keywords
tire
transponder
bead core
bead
antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2002279197A
Other languages
Japanese (ja)
Other versions
JP2004114788A (en
Inventor
雅宣 豊福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP2002279197A priority Critical patent/JP4204833B2/en
Publication of JP2004114788A publication Critical patent/JP2004114788A/en
Application granted granted Critical
Publication of JP4204833B2 publication Critical patent/JP4204833B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • H01Q1/2208Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2241Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in or for vehicle tyres
    • 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
    • B60C23/00Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491Constructional details of means for attaching the control device
    • B60C23/0493Constructional details of means for attaching the control device for attachment on the tyre

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Tires In General (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、個々のタイヤに関する種々の情報を発信するトランスポンダを内蔵したタイヤに関する。
【0002】
【従来の技術】
タイヤの識別情報やタイヤの内圧、温度などのタイヤ情報を保持し、外部から受信する情報送信要求の信号に応じて、これらの情報を送信するトランスポンダを埋設したタイヤはすでに知られていて、このトランスポンダは、例えばビードコアの周辺やその他のタイヤ構成部材に埋設されて設けられている(例えば特許文献1。)。そして、トランスポンダをビードコアの周辺に設ける場合、この領域は、タイヤの転動に伴って変形するタイヤにあって、比較的変形が少なく、タイヤもしくはトランスポンダの耐久性に与える悪影響を抑制する点で好ましい領域である。
【0003】
【特許文献1】
特開平7−137510号公報(第2−3頁、図1)
【0004】
【発明が解決しようとする課題】
しかしながら、従来のトランスポンダの配設構造によると、このトランスポンダから信号を受信し送信するためのアンテナは、トランスポンダのごく近傍の、タイヤ周方向の延在範囲が限定された領域に設けられているので、その送受信感度が十分でないうえ、回転するタイヤからの送受信に際して、周囲の電気的障害物がある場合、特定の回転位置に来たときしかで信号を送受信することができず、信号の送受信の信頼性を低下させていた。
【0005】
本発明は、このような問題点に鑑みてなされたものであり、タイヤもしくはトランスポンダの耐久性を阻害することなく、タイヤの回転にかかわりなくいつでも外部に対する送受信が可能なよう、トランスポンダおよびアンテナを配設したタイヤを提供することを目的とするものである。
【0006】
【課題を解決するための手段】
上記目的を達成するため、本発明はなされたものであり、その要旨構成ならびに作用を以下に示す。
【0007】
請求項1に記載のタイヤは、一対のビード部の間に一対のサイドウォール部およびトレッド部をトロイダル状に連ねて配置し、それぞれのビード部にビードコアを設けたタイヤにおいて、
トランスポンダとこの両端に接続された環状アンテナとよりなる環状体を、少なくとも一方のビードコアに沿って埋設するともに、環状体の外表面に導電性ゴムよりなる被覆層を設けてなるものである。
【0008】
本発明のタイヤによれば、トランスポンダとアンテナとを、ともにタイヤの転動に際しての変形が少ないビードコアに沿う領域に埋設したので、タイヤならびにトランスポンダの耐久性への悪影響を抑制することができ、また、アンテナをビードコアに沿ってほぼ一周するよう環状に配設したので、タイヤの回転位置に拘らず外部に対して信号の送受信を行うことができる。
【0010】
また、本発明のタイヤによれば、環状体の表面を被覆する導電性ゴムにより、仮にタイヤの転動に伴う変形や衝撃によりアンテナの導通が損なわれたとしても、導電ゴムにより損傷部分の導電性をバックアップできるので、信頼性の高い送受信を確保することができる。
【0011】
請求項2に記載のタイヤは、請求項1に記載するところにおいて、前記環状体をビードコアの幅方向内側またはビードコアの半径方向外側に配設してなるものである。
【0012】
タイヤのホイールへの装着姿勢において、ビードコアの幅方向外側および半径方向内側にホイールが位置しているが、本発明のタイヤによれば、前記環状体を上記方位にの間に配設したので、外部との送受信に際して、スチールもしくはアルミニウムよりなるホイールが通信の障害となる可能性を大幅に低減することができる。
【0013】
【発明の実施の形態】
以下、本発明の実施形態について図1ないし図2に基づいて説明する。図1はタイヤ1の子午線断面におけるビード部2を示す断面図であり、図2はトランスポンダ8とアンテナ5との接合部を示す断面図である。タイヤ1のビード部2にはタイヤ周方向に延在するビードコア3が配設され、また、カーカス7は、ビードコア3の周りにその側部をタイヤ幅方向外側に折り返されて設けられている。
【0014】
一方、トランスポンダ8は、基板11と基板11にマウントされたチップ9とで構成されており、このチップ9は、それぞれ図示しない、タイヤ1の識別情報を保持する情報格納手段と、外部からの情報送信要求の信号を受信する受信手段と、受信した要求信号に応じて必要な情報を情報格納手段から取り出す制御手段と、取り出した情報を送信する送信手段とを有している。
【0015】
トランスポンダ8の基板11には、円環の一部を切り欠いた形状のアンテナ5の両端が半田付けされ、これらの端はそれぞれチップ9の送信手段および受信手段に電気的に接続されている。この環状のアンテナ5は、ビードコア3に沿って周方向に延在するとともに、タイヤ子午線断面においては、ビードコア3の半径方向すぐ外側の幅方向内側寄りに配置されている。
【0016】
そして、トランスポンダ8およびアンテナ6はそれぞれ導電性ゴム6で外表面を被覆され、これら、トランスポンダ8、アンテナ6および導電性ゴム6は環状体4を構成する。この環状体4のタイヤ子午線断面における配置は、図1のものに限定されるものではなく、変形が少なくしかも外部との信号の送受信に障害とならない位置であればよい。その点では、ビードコア3のごく近傍で、リムから離隔した、ビードコア3のタイヤ半径方向外側もしくはビードコア3のタイヤ幅方向内側に位置させるのが好ましい。
【0017】
なお、この実施形態のタイヤにおいては、トランスポンダを、温度やひずみ等を測定するセンサ等を具えるものとしてもよく、このようなトランスポンダにおいては、これらのセンサで検知したタイヤの情報を外部に送信することができる。
【0018】
【発明の効果】
以上述べたところから明らかなように、本発明によれば、トランスポンダ8とアンテナ5とを、ともに変形が少ないビードコア3に沿う領域に埋設したので、トランスポンダ8、アンテナ5ならびにタイヤ1の耐久性への悪影響を抑制することができ、また、アンテナ5をビードコア3に沿ってほぼ一周するよう環状に配設したので、タイヤ1の回転位置に拘らず外部に対して信号の送受信を行うことができる。
【図面の簡単な説明】
【図1】 本発明に係る実施形態のタイヤのビード部を示す子午線断面図である。
【図2】 トランスポンダとアンテナとの接続部を示す略線断面図である。
【符号の説明】
1 タイヤ
2 ビード部
3 ビードコア
4 環状体
5 アンテナ
6 導電性ゴム
7 カーカス
8 トランスポンダ
9 チップ
11 基板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tire with a built-in transponder that transmits various information related to individual tires.
[0002]
[Prior art]
Tires in which a transponder that holds tire identification information, tire internal pressure, temperature, and other tire information such as tire transmission information and transmits such information in response to an external information transmission request signal are already known. The transponder is provided, for example, embedded in the periphery of the bead core or other tire constituent members (for example, Patent Document 1). When the transponder is provided around the bead core, this region is a tire that is deformed as the tire rolls, and is preferable in that the deformation is relatively small and the adverse effect on the durability of the tire or the transponder is suppressed. It is an area.
[0003]
[Patent Document 1]
JP-A-7-137510 (page 2-3, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, according to the arrangement structure of the conventional transponder, the antenna for receiving and transmitting a signal from this transponder is provided in an area in the vicinity of the transponder, in which the extension range in the tire circumferential direction is limited. The transmission / reception sensitivity is not sufficient, and when there is an electrical obstacle in the surroundings when transmitting / receiving from a rotating tire, the signal can be transmitted / received only when it reaches a specific rotational position. Reliability was reduced.
[0005]
The present invention has been made in view of such problems, and the transponder and the antenna are arranged so that transmission / reception can be performed at any time regardless of the rotation of the tire without impairing the durability of the tire or the transponder. The object is to provide a set tire.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has been made, and the gist configuration and operation thereof will be described below.
[0007]
The tire according to claim 1 is a tire in which a pair of sidewall portions and a tread portion are arranged in a toroidal shape between a pair of bead portions, and a bead core is provided in each bead portion.
An annular body composed of a transponder and an annular antenna connected to both ends thereof is embedded along at least one bead core, and a coating layer made of conductive rubber is provided on the outer surface of the annular body .
[0008]
According to the tire of the present invention, since the transponder and the antenna are both embedded in the region along the bead core that is less deformed when the tire rolls, the adverse effect on the durability of the tire and the transponder can be suppressed. Since the antenna is arranged in an annular shape so as to make one round along the bead core, signals can be transmitted and received to the outside regardless of the rotational position of the tire.
[0010]
Further , according to the tire of the present invention, even if the conductive rubber covering the surface of the annular body loses the continuity of the antenna due to deformation or impact caused by the rolling of the tire, the conductive rubber conducts the damaged portion. Therefore, highly reliable transmission / reception can be ensured.
[0011]
A tire according to a second aspect is the tire according to the first aspect , wherein the annular body is disposed on the inner side in the width direction of the bead core or on the outer side in the radial direction of the bead core .
[0012]
In the mounting posture of the tire on the wheel, the wheel is positioned on the outer side in the width direction and the inner side in the radial direction of the bead core, but according to the tire of the present invention, the annular body is disposed between the above directions, The possibility of a wheel made of steel or aluminum becoming an obstacle to communication during transmission / reception with the outside can be greatly reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a bead portion 2 in a meridian cross section of the tire 1, and FIG. 2 is a cross-sectional view showing a joint portion between a transponder 8 and an antenna 5. A bead core 3 extending in the tire circumferential direction is disposed in the bead portion 2 of the tire 1, and the carcass 7 is provided around the bead core 3 with its side portion folded back outward in the tire width direction.
[0014]
On the other hand, the transponder 8 includes a substrate 11 and a chip 9 mounted on the substrate 11. The chip 9 includes an information storage means for holding tire 1 identification information and information from the outside, not shown. It has a receiving means for receiving a transmission request signal, a control means for taking out necessary information from the information storage means in response to the received request signal, and a sending means for sending out the taken information.
[0015]
Both ends of the antenna 5 having a shape in which a part of the ring is cut out are soldered to the substrate 11 of the transponder 8, and these ends are electrically connected to the transmitting means and the receiving means of the chip 9, respectively. The annular antenna 5 extends in the circumferential direction along the bead core 3, and is disposed on the inner side in the width direction immediately outside the bead core 3 in the radial direction in the tire meridian cross section.
[0016]
The transponder 8 and the antenna 6 are each coated on the outer surface with a conductive rubber 6, and the transponder 8, the antenna 6 and the conductive rubber 6 constitute an annular body 4. The arrangement of the annular body 4 in the tire meridian cross section is not limited to that shown in FIG. 1, and may be any position that is less deformed and does not hinder transmission / reception of signals with the outside. In that respect, it is preferable that the bead core 3 is positioned in the tire radial direction outer side of the bead core 3 or the bead core 3 in the tire width direction inner side, separated from the rim, in the vicinity of the bead core 3.
[0017]
In the tire of this embodiment, the transponder may include a sensor for measuring temperature, strain, and the like. In such a transponder, the tire information detected by these sensors is transmitted to the outside. can do.
[0018]
【The invention's effect】
As is apparent from the above description, according to the present invention, since the transponder 8 and the antenna 5 are both embedded in the region along the bead core 3 with little deformation, the durability of the transponder 8, the antenna 5 and the tire 1 is improved. In addition, the antenna 5 is arranged in an annular shape so as to make one round along the bead core 3, so that signals can be transmitted and received to the outside regardless of the rotational position of the tire 1. .
[Brief description of the drawings]
FIG. 1 is a meridian cross-sectional view showing a bead portion of a tire according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view showing a connection portion between a transponder and an antenna.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tire 2 Bead part 3 Bead core 4 Ring body 5 Antenna 6 Conductive rubber 7 Carcass 8 Transponder 9 Chip 11 Board | substrate

Claims (2)

一対のビード部の間に一対のサイドウォール部およびトレッド部をトロイダル状に連ねて配置し、それぞれのビード部にビードコアを設けたタイヤにおいて、
トランスポンダとこの両端に接続された環状アンテナとよりなる環状体を、少なくとも一方のビードコアに沿って埋設するともに、環状体の外表面に導電性ゴムよりなる被覆層を設けてなるタイヤ。
In a tire in which a pair of sidewall portions and a tread portion are arranged in a toroidal shape between a pair of bead portions, and a bead core is provided in each bead portion,
A tire in which an annular body composed of a transponder and an annular antenna connected to both ends thereof is embedded along at least one bead core, and a coating layer made of conductive rubber is provided on the outer surface of the annular body .
前記環状体をビードコアの幅方向内側またはビードコアの半径方向外側に配設してなる請求項1に記載のタイヤ。The tire according to claim 1, wherein the annular body is disposed on the inner side in the width direction of the bead core or on the outer side in the radial direction of the bead core .
JP2002279197A 2002-09-25 2002-09-25 tire Expired - Fee Related JP4204833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002279197A JP4204833B2 (en) 2002-09-25 2002-09-25 tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002279197A JP4204833B2 (en) 2002-09-25 2002-09-25 tire

Publications (2)

Publication Number Publication Date
JP2004114788A JP2004114788A (en) 2004-04-15
JP4204833B2 true JP4204833B2 (en) 2009-01-07

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Family Applications (1)

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Cited By (1)

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US10460226B2 (en) 2014-12-23 2019-10-29 Bridgestone Americas Tire Operations, Llc Tire having radio frequency identification device for monitoring structural health

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JP2005331361A (en) * 2004-05-20 2005-12-02 Akebono Brake Ind Co Ltd Tyre air pressure alarming sensor
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US8977422B1 (en) 2013-11-06 2015-03-10 The Goodyear Tire & Rubber Company Accoustic/vibration sensor and tire assembly and method of construction thereof
JP7272773B2 (en) * 2018-10-03 2023-05-12 Toyo Tire株式会社 tire
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JP7401205B2 (en) * 2019-06-19 2023-12-19 Toyo Tire株式会社 tire
JP7345290B2 (en) * 2019-06-19 2023-09-15 Toyo Tire株式会社 tire

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US5181975A (en) * 1991-03-27 1993-01-26 The Goodyear Tire & Rubber Company Integrated circuit transponder with coil antenna in a pneumatic tire for use in tire identification
JPH10119521A (en) * 1996-10-14 1998-05-12 Yokohama Rubber Co Ltd:The Pneumatic tire with transponder and transponder for pneumatic tire
JP3754183B2 (en) * 1997-07-30 2006-03-08 横浜ゴム株式会社 Transponder-equipped tire and manufacturing method thereof
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Publication number Priority date Publication date Assignee Title
US10460226B2 (en) 2014-12-23 2019-10-29 Bridgestone Americas Tire Operations, Llc Tire having radio frequency identification device for monitoring structural health

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