JP2005064799A - Rfid antenna for portable information terminal unit - Google Patents

Rfid antenna for portable information terminal unit Download PDF

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JP2005064799A
JP2005064799A JP2003291467A JP2003291467A JP2005064799A JP 2005064799 A JP2005064799 A JP 2005064799A JP 2003291467 A JP2003291467 A JP 2003291467A JP 2003291467 A JP2003291467 A JP 2003291467A JP 2005064799 A JP2005064799 A JP 2005064799A
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rfid antenna
information terminal
rfid
antenna
housing
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Daisuke Ikeda
Takamitsu Nakabayashi
Naoki Sunaga
貴光 中林
大亮 池田
直規 須永
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Toppan Printing Co Ltd
凸版印刷株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To realize a stable communication by suppressing a mutual interference between a circuit component contained in a housing and an RFID antenna, and a battery and the RFID antenna. <P>SOLUTION: The portable information terminal unit includes the RFID antenna 1, and the circuit component for communicating with the RFID antenna 1. The circuit component is contained in a housing 6, and the RFID antenna 1 is rotatably or slidably mounted in this housing 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、アンテナに係り、特に、携帯型情報端末機器用RFIDアンテナの機構に関するものである。 The present invention relates to an antenna, more particularly to a mechanism of the RFID antenna for a portable information terminal device.

背景技術のRFID(Radio Frequency IDentification)は、非接触での自動認識技術である。 BACKGROUND ART RFID (Radio Frequency IDentification) is an automatic recognition technology without contact. RFIDの適用用途は様々で、人が持って使用する非接触ICカードと呼ばれるものや、物に固定して使用されるタグ形状をしたもの(Radio Frequency Tag、RFタグ、ICタグなどに代表されるもの)がある。 RFID applications applications vary, those and called the non-contact IC card for use with a person, that the tag shape used by fixing the object (Radio Frequency Tag, is typified in the RF tag, IC tag shall) there is.

ICタグの電気的構成は、コイルとこのコイルに電気的に接続されたチップ状のICモジュールからなる。 Electrical configuration of the IC tag consists electrically connected to a chip-like IC module to the coil and coil. コイルの有するインダクタンスLとICモジュールの有するキャパシタンスCとでLC回路を構成している。 It constitutes an LC circuit together with the capacitance C with the inductance L and the IC module having a coil. このLC回路の固有の共振周波数は、ICタグにおいて通信するために使用する周波数に設定される。 Natural resonance frequency of the LC circuit is set to a frequency to be used for communication in the IC tag. ICタグは、電磁誘導によって外部から電力を得ながら、外部に設置されたリーダライタとの間で非接触通信を行う。 IC tag, while obtaining power from outside by electromagnetic induction, performs contactless communication with the reader-writer installed outside.

RFIDは、非接触で行われる通信であるためコイルやICモジュールをカードやタグではなく筐体に収容しても実現可能であり、携帯電話やPDA(Personal Digital Assistants、情報携帯端末)等の情報端末機器に組み込んで使用することも可能である。 RFID is accommodated in a housing rather than a card or tag coil and the IC module for a communications performed by a non-contact are also feasible, mobile phone or PDA (Personal Digital Assistants, PDA), etc. Information it is also possible to use by incorporating into the terminal equipment.

情報端末機器にRFID機能を設ける場合、RFIDアンテナは情報端末機器の筐体内に配置される。 If the information terminal device providing the RFID function, RFID antennas are arranged in the housing of the information terminal device. RFIDアンテナは、数ターン巻かれたコイル状に形成されている。 RFID antenna is formed in a shape coil wound several turns. 情報端末機器は、RFIDアンテナの中心線上にアンテナ開口部(コイルが形成された中心線付近)をほぼ覆うように情報端末機器側の回路部品及びバッテリが配置されている。 The information terminal apparatus, the antenna opening the circuit components and batteries in the information terminal device side so as to cover substantially the (coil near the center line which is formed) is positioned on the center line of the RFID antenna.

図3に背景技術のRFID機能を有する携帯型情報端末機器の構造の概略を示す。 Figure 3 shows the schematic structure of a portable information terminal having an RFID function of the background art.

RFID機能を有する携帯型情報端末機器は、筐体6内に、RFIDアンテナ1と、チップ状のICモジュール等の構成部材からなる回路部品7と、情報端末機器に電源を供給するためのバッテリ8とを備えて構成される。 Portable information terminal device having the RFID function, in the housing 6, the RFID antenna 1, a circuit component 7 made components such as a chip like an IC module, battery 8 for supplying power to the information terminal device configured with the door.

図から分かるように、RFIDアンテナ1と回路部品7及びバッテリ8とが近接して配置されている。 As can be seen, the RFID antenna 1 and the circuit component 7 and the battery 8 are arranged close. このため、RFIDアンテナ1と回路部品7及びバッテリ8との相互の電磁的な干渉が生じ易い。 Therefore, easily occurs mutual electromagnetic interference between the RFID antenna 1 and the circuit component 7 and the battery 8.

また、この電磁的な干渉の影響を抑えるためにアモルファスシート等をRFIDアンテナ1と情報端末機器本体2との間に配置してシールド対策しているものもある。 Also, some are shielded measures disposed between the RFID antenna 1 and the information terminal equipment body 2 amorphous sheet or the like in order to suppress the influence of the electromagnetic interference.

なお、この出願の発明に関連する先行技術文献情報としては、次のものがある。 Prior art documents related to the present invention of this application, there are the following ones.

特開2003−37861号公報 JP 2003-37861 JP

特開2003−87385号公報 JP 2003-87385 JP

前述したように、RFIDアンテナと回路部品及びバッテリとの間隔が近くなるため、干渉によりRFIDの通信に悪影響を及ぼすという問題点がある。 As described above, since the distance between the RFID antenna and the circuit components and the battery is close, there is a problem that adversely affects the communication of the RFID by interference.

また、この干渉による影響を抑えるためにシールド対策を施す場合には、シールド対策をRFIDアンテナ全体に行う必要があるためコストが増すという問題点もある。 Moreover, in the case of applying the shield measures in order to suppress the influence of this interference, there is a problem that the cost increases because it is necessary to perform shielding measures throughout RFID antenna.

そこで、本発明の目的は、RFID機能を情報端末機器に搭載する際に、筐体に収容した回路部品及びバッテリとRFIDアンテナとの間の相互の干渉を抑え、安定した通信を可能にすることにある。 An object of the present invention, when mounting the RFID function to the information terminal device, suppressing the mutual interference between the circuit component and the battery and RFID antenna accommodated in the housing, enabling the stable communication It is in.

本発明は上記目的を達成するために創案されたものであり、第1の発明は、RFIDアンテナと、該RFIDアンテナを介して通信を行う回路部品とを有する携帯型情報端末機器において、上記回路部品を筐体に収容し、この筐体に上記RFIDアンテナを回動自在または、摺動自在に取り付けたものである。 The present invention has been made in order to achieve the above object, the first invention is a portable information terminal device having a RFID antenna, and a circuit component that performs communication via the RFID antenna, the circuit houses components in the housing, the housing rotatable or said RFID antenna, in which mounted slidably.

第2の発明は、上記RFIDアンテナの一端と上記筐体の一端とを連結し、この連結箇所を軸として回動可能なヒンジを設けたものである。 A second invention is connected to one end of the one end and the housing of the RFID antenna, it is provided with a pivotable hinge this juncture as an axis.

第3の発明は、上記RFIDアンテナを上記筐体に沿わせて移動させるスライド部を設けたものである。 The third invention is the RFID antenna is provided the slide portion for moving along a said housing.

本発明によれば、筐体に収容した回路部品及びバッテリとRFIDアンテナとの間の相互の干渉を抑え、安定した通信を提供できるという優れた効果を発揮する。 According to the present invention suppress the mutual interference between the circuit component and the battery and RFID antenna accommodated in the housing, there is exhibited an excellent effect that can provide stable communication.

以下、本発明の好適実施の形態を添付図面にしたがって説明する。 Hereinafter will be described with reference to the accompanying drawings a preferred embodiment of the present invention.

図1は、本発明の好適実施の形態を示す。 Figure 1 shows a preferred embodiment of the present invention.

図1(a)は、携帯型情報端末機器用RFIDアンテナを折り畳んだ状態を示す斜景図である。 1 (a) is a perspective scene view showing a folded state of the RFID antenna for a portable information terminal device. 図1(b)は、RFIDアンテナを開いた状態を示す斜景図である。 1 (b) is a perspective scene view showing an open state of the RFID antenna.

RFID機能を有する携帯型情報端末機器は、RFIDアンテナ1を内蔵したアンテナ枠9と、情報端末機器本体2と、アンテナ枠9を回動自在(可能)にするためのヒンジ3とを備えて構成される。 Portable information terminal device having the RFID function, configured to include an antenna frame 9 with a built-in RFID antenna 1, an information terminal equipment body 2, and a hinge 3 to the rotatable antenna frame 9 (possible) It is.

図示したようにアンテナ枠9は、一端をヒンジ3の一端に連結し取り付けられている。 Antenna frame 9 as shown is mounted is connected at one end to one end of the hinge 3. 情報端末機器本体2は、筐体6の一端を前述のヒンジ3の他端に連結し取り付けられており、アンテナ枠9と情報端末機器本体2の筐体6とは、互いにヒンジ3を介して蝶番留めになるように支持されている。 Information terminal equipment body 2, one end of the housing 6 is attached is connected to the other end of the aforementioned hinge 3, the housing 6 of the antenna frame 9 and the information terminal equipment body 2, via a hinge 3 to one another It is supported so as to be hinged.

RFIDアンテナ1は、導体をコイル状に数ターンから数十ターン巻いて形成されたアンテナ素子からなっており、アンテナ枠9に収納されている。 RFID antenna 1 is adapted from the antenna element formed by winding several tens turns from several turns into a coil conductor, it is accommodated in the antenna frame 9. RFIDアンテナ1は図示しない外部機器(以下、リーダライタと云う。)からの電磁誘導を感知して通信するための送受信用アンテナとなっている。 RFID antenna 1 are not shown external device are (hereinafter referred to as reader-writer.) Senses the electromagnetic induction from a transmitting and receiving antenna for communicating.

情報端末機器本体2は、筐体6内に図示しないチップ状のICモジュール等からなる回路部品、及び情報端末機器本体2に電源を供給するためのバッテリを収容(図3の回路部品7、バッテリ8参照)し、通信した情報や情報端末機器本体2の操作状況を表示するためのディスプレイ5を筐体6に備えて構成されている。 Information terminal equipment body 2, houses a battery for supplying power circuit component consists of chip-shaped IC module or the like (not shown) in the housing 6, and the information terminal equipment body 2 (circuit component 7 in FIG. 3, the battery 8 reference), and is configured to include a display 5 for displaying an operation state of the communication information and the information terminal equipment body 2 to the housing 6.

携帯型情報端末機器は、リーダライタの近傍に接近した時に、RFIDアンテナ1を介してリーダライタとの非接触通信を行う機能を有している。 Portable information terminal device, when approaching the vicinity of the reader-writer, has a function to perform non-contact communication with the reader-writer via the RFID antenna 1. 情報端末機器本体2は、外部との通信情報をRFIDアンテナ1を介してリーダライタと遣り取りし、必要なデータを外部に送出したり、受信したデータを表示したり、送受信の通信制御をしたりする機能を有する。 Information terminal equipment body 2, or to interact with the reader-writer to communicate information with the outside through the RFID antenna 1, or sends necessary data to an external, view received data, the communication control of the transmission and reception It has a function of.

アンテナ枠9に収納されたRFIDアンテナ1は、RFID機能を使用しない時は、図1(a)に示すように情報端末機器本体2に沿って2つに折り畳まれており、情報端末機器本体2の操作を妨げない構造となっている。 RFID antenna 1 housed in the antenna frame 9, when not in use RFID functionality is folded into two along to the information terminal equipment body 2 as shown in FIG. 1 (a), the information terminal equipment body 2 and it has a structure that does not interfere with the operation.

すなわち、アンテナ枠9は、コイル状のRFIDアンテナ1を収納しており、中心部分は窓が開いた状態となっている。 That is, the antenna frame 9 is housed a coiled RFID antenna 1, the central portion is in a state in which the window is open. このため、携帯型情報端末機器は、アンテナ枠9を畳んだ図1(a)の状態でも、ディスプレイ5の表示が見える構造となっている。 Therefore, the portable information terminal device, even in the state of FIG. 1 folded antenna frame 9 (a), has a structure in which the display of the display 5 is visible.

アンテナ枠9に収納されたRFIDアンテナ1は、RFID機能を使用する時は、図1(a)の折り畳んだ状態から、図1(b)に示すように連結箇所を軸として矢印方向に開かれる。 RFID antenna 1 housed in the antenna frame 9, when using the RFID function is opened from the folded state of FIG. 1 (a), the direction of the arrow as the shaft coupling portion, as shown in FIG. 1 (b) .

このため、RFIDアンテナ1の中心線は情報端末機器本体2から離れ、RFIDアンテナ1が情報端末機器本体2に搭載されているICモジュール等の電子部品(回路部品)やバッテリから離れる。 Therefore, the center line of the RFID antenna 1 away from the information terminal equipment body 2, away from the electronic components (circuit components) and a battery such as an IC module RFID antenna 1 is mounted on the information terminal equipment body 2.

したがって、情報端末機器は、アンテナ枠9のアンテナ開口部が筐体6内の回路部品及びバッテリを覆わないように位置することになる。 Therefore, the information terminal apparatus, so that the antenna aperture of the antenna frame 9 is positioned so as not to cover the circuit components and batteries in the casing 6.

携帯電話等の情報機器端末の回路部品と異なり、RFIDのための回路部品(ICモジュール等)は、近距離の接触若しくは非接触(典型例として、数ミリメートルから数メートルの距離)通信に適するため、RFIDのための回路部品は電磁的な干渉を受け易い。 Unlike information terminal circuit component such as a cellular phone, circuit components for the RFID (IC modules etc.), (as a typical example, a distance of several meters from a few millimeters) contact or non-contact short-range to suit the communication , circuit components for the RFID is susceptible to electromagnetic interference.

このため、RFID機能を有しない情報端末機器では生じない電磁干渉の影響が、RFID機能を有する情報端末機器では生じ易く、この電磁干渉はRFIDアンテナ1と回路部品やバッテリが近接しているために発生するものである。 Therefore, the effect of electromagnetic interference does not occur in the information terminal device having no RFID function, likely to occur in the information terminal device having the RFID function, the electromagnetic interference to RFID antenna 1 and the circuit parts and the battery are in close proximity it is intended to occur. 特に、RFIDアンテナ1の開口部が回路部品と近接し、RFIDアンテナ1による電磁界の方向が回路部品の設けられた場所と一致する場合には、RFIDのための回路部品は電磁的な影響を受け易い。 In particular, the opening of the RFID antenna 1 close to the circuit component, if the direction of the electromagnetic field matches the location provided with the circuit components by RFID antenna 1, the circuit components electromagnetic influence for RFID susceptible.

したがって、本実施の形態に示すようにRFIDアンテナ1をこれらの回路部品やバッテリから離すことで、通信を行うための回路部品やバッテリがRFIDアンテナ1の開口部に覆われなくなり、情報端末機器本体2とRFIDアンテナ1との電磁的な干渉が低減、解消される優れた効果を発揮する。 Therefore, the RFID antenna 1 as shown in the present embodiment by separating these circuit components, a battery, circuit components and batteries for communication is no longer covered by the opening of the RFID antenna 1, an information terminal equipment body 2 and electromagnetic interference reduction in the RFID antenna 1, exhibits an excellent effect to be eliminated.

図2は、本発明の他の実施の形態を示す。 Figure 2 shows another embodiment of the present invention.

図2(a)は、携帯型情報端末機器用RFIDアンテナを情報機器端末本体に収納させた状態を示す斜景図である。 2 (a) is a perspective scene view showing a state of being housed RFID antenna for a portable information terminal device to the information device terminal body. 図2(b)は、RFIDアンテナをスライドさせた状態を示す斜景図である。 2 (b) is a perspective scene view showing a state in which slide the RFID antenna.

RFID機能を有する携帯型情報端末機器は、RFIDアンテナ1を内蔵したアンテナ枠9と、情報端末機器本体2と、アンテナ枠9を摺動自在にするためのスライド部4とを備えて構成される。 Portable information terminal device having the RFID function is configured to include an antenna frame 9 with a built-in RFID antenna 1, an information terminal equipment body 2, and a slide portion 4 for slidably antenna frame 9 .

アンテナ枠9は、未使用時には情報端末機器本体2の筐体6に収納若しくは沿わせて配置されている。 Antenna frame 9 is arranged housed or along a housing 6 of the information terminal equipment body 2 when not in use.

情報端末機器本体2の筐体6にはスライド部4が設けられており、スライド部4は、アンテナ枠9を支持し、必要に応じてアンテナ枠9を摺動するためのスライドレールの機能を有する。 The housing 6 of the information terminal equipment body 2 and the slide portion 4 is provided, the sliding unit 4 supports the antenna frame 9, the optionally slide rails to slide the antenna frame 9 functions a.

アンテナ枠9と、情報端末機器本体2とは、RFIDアンテナ1の使用時には情報端末機器本体2の長手方向にスライドさせてアンテナ枠9に収納されたRFIDアンテナ1を情報端末機器本体2から離れた状態にする構造となっている。 An antenna frame 9, the information terminal equipment body 2, leaving the RFID antenna 1 is slid in the longitudinal direction of the information terminal equipment body 2 at the time of use stored in the antenna frame 9 of the RFID antenna 1 from the information terminal equipment body 2 and it has a structure in which the state.

このため、情報端末機器は、アンテナ枠9のアンテナ開口部が筐体6内の回路部品及びバッテリを覆わないように位置することになる。 Therefore, the information terminal apparatus, so that the antenna aperture of the antenna frame 9 is positioned so as not to cover the circuit components and batteries in the casing 6.

情報端末機器本体2は、外部との通信情報をRFIDアンテナ1を介してリーダライタと遣り取りし、必要なデータを外部に送出したり、受信したデータを表示したり、送受信の通信制御をしたりする機能を有する。 Information terminal equipment body 2, or to interact with the reader-writer to communicate information with the outside through the RFID antenna 1, or sends necessary data to an external, view received data, the communication control of the transmission and reception It has a function of.

アンテナ枠9に収納されたRFIDアンテナ1は、RFID機能を使用しない時は、図2(a)に示すように情報端末機器本体2の筐体6に収納されるか、筐体6に沿っており、情報端末機器本体2の操作を妨げない構造となっている。 RFID antenna 1 housed in the antenna frame 9, when not in use RFID functions may be accommodated in a housing 6 of the information terminal equipment body 2 as shown in FIG. 2 (a), along the housing 6 cage, has a structure which does not interfere with the operation of the information terminal equipment body 2.

すなわち、アンテナ枠9は、コイル状のRFIDアンテナ1を収納しており、中心部分は窓が開いた状態となっている。 That is, the antenna frame 9 is housed a coiled RFID antenna 1, the central portion is in a state in which the window is open. このため、携帯型情報端末機器は、アンテナ枠9を収納した図2(a)の状態でも、ディスプレイ5の表示がモニタ出来る構造となっている。 Therefore, the portable information terminal device, even in the state of FIG. 2 housing the antenna frame 9 (a), has a structure in which the display of the display 5 the monitor can.

アンテナ枠9に収納されたRFIDアンテナ1は、RFID機能を使用する時は、図2(b)に示すようにスライド部4に沿って矢印方向に筐体6からスライド(移動)させアンテナ枠9を情報端末機器本体2から離す。 RFID antenna 1 housed in the antenna frame 9, when using the RFID function, the slide from the housing 6 in the direction of the arrow along the slide portion 4 as shown in FIG. 2 (b) (movement) is allowed antenna frame 9 release from the information terminal apparatus main body 2.

本実施の形態に示すようにRFIDアンテナ1を筐体6に収容された通信を行うための回路部品やバッテリから離すことで、回路部品やバッテリがRFIDアンテナ1の開口部に覆われなくなり、情報端末機器本体2とRFIDアンテナ1との電磁的な干渉が低減、解消される優れた効果を発揮する。 By separating the RFID antenna 1 as in this embodiment from the circuit components and batteries for communication accommodated in the housing 6, the circuit components and the battery is no longer covered by the opening of the RFID antenna 1, the information electromagnetic interference reduction in the terminal equipment main body 2 and the RFID antenna 1, exhibits an excellent effect to be eliminated.

以上説明したように本発明の実施の形態では、RFID機能を有する携帯型情報端末において、RFID機能使用時にRFIDアンテナが情報端末機器内の電子部品、バッテリから距離をとれるため、RFID通信時において、RFIDアンテナに対する周囲の電子部品や金属の影響による電磁的な干渉を低減させることが出来、その結果電磁的干渉に因る通信距離の減少や通信不能に陥ることがないという優れた効果を発揮する。 In the above embodiment of the described manner, the present invention, in a portable information terminal having an RFID function, the electronic components in the RFID antenna information terminal equipment at the time of RFID function is used for take a distance from the battery, at the time of RFID communication, electromagnetic interference can be reduced due to the influence of electronic components and metal around to the RFID antenna, there is exhibited an excellent effect that have never result falling into electromagnetic interference due to the communication distance decreases and incommunicable .

図1(a)は、携帯型情報端末機器用RFIDアンテナを折り畳んだ状態を示す斜景図である。 1 (a) is a perspective scene view showing a folded state of the RFID antenna for a portable information terminal device. 図1(b)は、RFIDアンテナを開いた状態を示す斜景図である。 1 (b) is a perspective scene view showing an open state of the RFID antenna. 図2(a)は、携帯型情報端末機器用RFIDアンテナを情報端末機器本体に収納させた状態を示す斜景図である。 2 (a) is a perspective scene view showing a state of being housed RFID antenna for a portable information terminal device to the information terminal equipment body. 図2(b)は、RFIDアンテナをスライドさせた状態を示す斜景図である。 2 (b) is a perspective scene view showing a state in which slide the RFID antenna. 背景技術のRFID機能を有する携帯型情報端末機器の構造を示す概略図である。 It is a schematic diagram showing a structure of a portable information terminal having an RFID function of the background art.

符号の説明 DESCRIPTION OF SYMBOLS

1 RFIDアンテナ2 情報端末機器本体3 ヒンジ4 スライド部5 ディスプレイ6 筐体9 アンテナ枠 1 RFID antenna 2 information terminal equipment body 3 hinge 4 slide portion 5 display 6 housing 9 antenna frame

Claims (3)

  1. RFIDアンテナと、該RFIDアンテナを介して通信を行う回路部品とを有する携帯型情報端末機器において、上記回路部品を筐体に収容し、この筐体に上記RFIDアンテナを回動自在または、摺動自在に取り付けたことを特徴とする携帯型情報端末機器用RFIDアンテナ。 An RFID antenna, the portable information terminal device and a circuit component that performs communication via the RFID antenna, the circuit components accommodated in the housing, or rotatably the RFID antenna to the housing, the sliding portable information terminals RFID antenna device being characterized in that mounted for.
  2. 上記RFIDアンテナの一端と上記筐体の一端とを連結し、この連結箇所を軸として回動可能なヒンジを設けた請求項1記載の携帯型情報端末機器用RFIDアンテナ。 The connecting the one ends and the housing of the RFID antenna, the portable information RFID antenna terminal device according to claim 1, wherein is provided a rotatable hinge this juncture as an axis.
  3. 上記RFIDアンテナを上記筐体に沿わせて移動させるスライド部を設けた請求項1記載の携帯型情報端末機器用RFIDアンテナ。 The RFID antenna RFID antenna for a portable information terminal device according to claim 1, wherein is provided a slide portion for moving along a said housing.
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