JP2004131937A - Portable machine - Google Patents

Portable machine Download PDF

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Publication number
JP2004131937A
JP2004131937A JP2002294526A JP2002294526A JP2004131937A JP 2004131937 A JP2004131937 A JP 2004131937A JP 2002294526 A JP2002294526 A JP 2002294526A JP 2002294526 A JP2002294526 A JP 2002294526A JP 2004131937 A JP2004131937 A JP 2004131937A
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Japan
Prior art keywords
battery
housing
voltage
batteries
receiver
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.)
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JP2002294526A
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Japanese (ja)
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JP3923404B2 (en
Inventor
Shinichi Ueda
上田 伸一
Shinichi Arie
有江 真一
Kenichi Sawada
澤田 健一
Kazuhiko Sueoka
末岡 一彦
Naoki Hayashi
林 直樹
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.)
Honda Motor Co Ltd
Panasonic Holdings Corp
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Honda Motor Co Ltd
Matsushita Electric Industrial Co Ltd
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Priority to JP2002294526A priority Critical patent/JP3923404B2/en
Publication of JP2004131937A publication Critical patent/JP2004131937A/en
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Publication of JP3923404B2 publication Critical patent/JP3923404B2/en
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  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To confirm the consumed state of a battery for a portable machine, maintaining the thinning of the portable machine. <P>SOLUTION: In the portable machine in which the battery is mounted or demounted freely to or from an electronic circuit housed in a housing, an LED for the portable machine is lit (a step S9) when the voltage of the battery is higher than the reference voltage of the new battery, the LED is flashed (the step S10) when the voltage is lower than the reference voltage and higher than the operable voltage of the electronic circuit and the LED is put out (the step S11) when the voltage is lower than the operable voltage when the battery is exchanged. Accordingly, not only the setting of the consumed battery to the portable machine by mistake is prevented but also the abnormality of systems excepting the portable machine can be decided when the system is not operated though the LED is lit or flashed and the electronic circuit can be operated. Since special switch and button for starting the check of the battery are made unnecessary, the thickening of the housing for the portable machine can be prevented. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、アンテナが接続された電子回路をハウジングの内部に収納し、電子回路に動作電源を供給する電池をハウジングに対して着脱自在とした携帯機に関する。
【0002】
【従来の技術】
携帯機を所持した者が車両に設けた施錠ボタンあるいは解錠ボタンを押すことでドアを施錠あるいは解錠できるようにした車両用遠隔施錠・解錠装置において、携帯機の電池が消耗すると車両側に設けた報知手段が作動して電池切れを報知するものが、下記特許文献1により公知である。
【0003】
また車両ユーザーが所持している携帯機から車両に制御信号を発射することでドアの施錠・解錠を行う車両用遠隔施錠・解錠装置において、携帯機の押しボタンを押して制御信号が出力されているときに、携帯機に設けたLEDを点灯または点滅させることで、制御信号が出力されていることを確認できるようにしたものが、下記特許文献2により公知である。
【0004】
【特許文献1】
特開昭60−64272号公報
【特許文献2】
実用新案登録第2584259号公報
【0005】
【発明が解決しようとする課題】
ところで上記特許文献1に記載されたものは、使用中の携帯機の電池が消耗したことを報知することは可能であるが、携帯機に電池をセットする際に、その電池が充分な残容量を有するものか、残容量が殆どないものかを判定することができないため、誤って古い電池をセットした場合に予想外に早く電池切れになってシステムが作動不能になる虞がある。
【0006】
また上記特許文献2に記載されたものは、携帯機の押しボタンを押してLEDの発光状態を確認することで電池の残容量を知ることができるが、携帯機に押しボタンを設ける必要があるために、薄型化を要求されるカード型の携帯機では押しボタンを設けたことで厚さが増加してしまう問題がある。
【0007】
本発明は前述の事情に鑑みてなされたもので、携帯機の薄型化を維持しながら、その電池の消耗状態を確認できるようにすることを目的とする。
【0008】
【課題を解決するための手段】
上記目的を達成するために、請求項1に記載された発明によれば、アンテナが接続された電子回路をハウジングの内部に収納し、電子回路に動作電源を供給する電池をハウジングに対して着脱自在とした携帯機において、電池を交換したときに、その電池から印加される電圧で電子回路が作動可能であれば報知手段を作動させることを特徴とする携帯機が提案される。
【0009】
上記構成によれば、携帯機の電池を交換したときに、その電池から印加される電圧で電子回路が作動可能であれば報知手段を作動させるので、誤って携帯機に消耗した電池をセットすることが防止される。また報知手段が作動して電子回路が作動可能であるにも拘わらずにシステムが作動しない場合は、携帯機以外のシステムに異常があると判定することができる。更に、電池のチェックを開始するための特別のスイッチやボタンが不要であるため、携帯機のハウジングが厚型化するのを防止することができる。
【0010】
また請求項2に記載された発明によれば、請求項1の構成に加えて、交換した電池の電圧を予め設定した基準電圧と比較し、比較結果に基づいて報知手段の作動態様を異ならせることを特徴とする携帯機が提案される。
【0011】
上記構成によれば、交換した電池の電圧を予め設定した基準電圧と比較した結果に基づいて報知手段の作動態様を異ならせるので、報知手段の作動態様に基づいて電池の消耗度合いを認識することができ、電池が消耗している場合には新しい電池を予め準備することができて利便性が向上する。
【0012】
尚、実施例のLFアンテナ16,17,18およびRFアンテナ19は本発明のアンテナに対応し、実施例のLED35は本発明の報知手段に対応する。
【0013】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。
【0014】
図1〜図14は本発明の一実施例を示すもので、図1は車両用遠隔施錠・解錠装置の全体構成を示す図、図2は車両用遠隔施錠・解錠装置のブロック図、図3は携帯送・受信機の全体平面図、図4は携帯送・受信機の分解斜視図、図5は携帯送・受信機のアッパーハウジングを外した状態を示す図、図6は図3の6−6線拡大断面図、図7は電池ホルダの平面図、図8は図3の要部拡大図(アッパーハウジングを外した状態)、図9は図8の9−9線拡大断面図、図10は図8の10−10線拡大断面図、図11は図8に対応する作用説明図、図12は図10に対応する作用説明図、図13は電池の電圧判定回路のブロック図、図14は電池の電圧判定ルーチンのフローチャートである。
【0015】
図1および図2に示すように、キーを使用せずに車両Vのドアの施錠および解錠を行うための車両用遠隔施錠・解錠装置は、車両ユーザーがポケットやバッグに入れて持ち運ぶためのカード型の携帯送・受信機11を含んでいる。携帯送・受信機11のコントロールユニット12には、LF(低周波数)受信機13と、RF(ラジオ周波数)送信機14と、RF(ラジオ周波数)受信機15とが接続されており、LF受信機13には3個のLFアンテナ16,17,18が接続されるとともに、RF送信機14およびRF受信機15には共通のRFアンテナ19が接続される。
【0016】
一方、車両V側に設けられたコントロールユニット20には、左側のドア21Lに設けた施錠スイッチ22Lおよび解錠スイッチ23Lと、右側のドア21Rに設けた施錠スイッチ22Rおよび解錠スイッチ23Rと、LF送信機24と、RF送信機25と、RF受信機26と、ドアロックアクチュエータ27とが接続されており、LF送信機24には左右のLFアンテナ28L,28Rが接続されるとともに、RF送信機25およびRF受信機26には共通のRFアンテナ29が接続される。
【0017】
しかして、携帯送・受信機11を身に付けた車両ユーザーが左側のドア21Lの解錠スイッチ23Lあるいは右側のドア21Rの解錠スイッチ23Rを押すと、車両V側のLFアンテナ28L,28RからIDリクエスト信号が送信され、それをLFアンテナ16〜18で受信した携帯送・受信機11は、コントロールユニット12に記憶しているID信号をRFアンテナ19から送信する。ID信号を車両V側のRFアンテナ29で受信したコントロールユニット20は、そのIDが正規のIDであるか否かを確認し、正規のIDであれば乱数信号xをRFアンテナ29から送信する。
【0018】
乱数信号xをRFアンテナ19で受信した携帯送・受信機11は、コントロールユニット12に記憶したプログラムに基づいて乱数信号xから算出した関数信号f(x)をRFアンテナ19から送信し、その関数信号f(x)を車両V側のRFアンテナ29で受信したコントロールユニット20は、そこで乱数信号xから算出した関数信号f(x)と前記受信した関数信号f(x)とを比較し、両者が一致していればドアロックアクチュエータ27を作動させてドア21L,21Rを解錠する。
【0019】
同様にして、携帯送・受信機11を身に付けた車両ユーザーが左側のドア21Lの施錠スイッチ22Lあるいは右側のドア21Rの施錠スイッチ22Rを押すと、コントロールユニット20がロックアクチュエータ27を作動させてドア21L,21Rを施錠する。
【0020】
次に、図3〜図12に基づいて携帯送・受信機11の構造を説明する。
【0021】
図3〜図5に示すように、携帯送・受信機11は全体として長方形状を成すカード型のものであり、財布等に収納し易いように厚さが極めて薄く形成されている。以下、長方形を成す携帯送・受信機11の四辺を右辺R、左辺L、上辺Uおよび下辺Dと呼ぶ(図3参照)。
【0022】
携帯送・受信機11のハウジング30は、合成樹脂で長方形状に形成したロアハウジング31およびアッパーハウジング32に2分割されており、ロアハウジング31の右辺R、左辺Lおよび下辺Dに沿って形成された溝状の凹部31aと、上辺U寄りの位置に形成された3個の溝状の凹部31b,31c,31dと、前記凹部31aの中央付近に形成されたピン状の凸部31eとに、アッパーハウジング32の右辺R、左辺Lおよび下辺Dに沿って形成されたリブ状の凸部32aと、上辺U寄りの位置に形成された3個のリブ状の凸部32b,32c,32dと、前記凸部32aの中央付近に形成された孔状の凹部32eとがそれぞれ嵌合し、それらの嵌合部においてロアハウジング31およびアッパーハウジング32が溶着より固定される。
【0023】
アッパーハウジング32の内面には、その長さ方向(右辺Rおよび左辺L方向)に延びる直線状の補強リブ32fと、その長さ方向および幅方向(上辺Uおよび下辺D方向)に延びる十字状の補強リブ32g,32hとが形成されており、十字状の補強リブ32g,32hの交差部に前記凹部32eが位置している。またアッパーハウジング32には、その表裏に貫通する1個の貫通孔32iが形成される。更に、ロアハウジング31およびアッパーハウジング32を結合する際に、それらを相互に位置決めするために、ロアハウジング31に形成された2個の位置決め孔31f,31fに、アッパーハウジング32に形成された2個の位置決めピン32j,32jが嵌合する。
【0024】
ロアハウジング31およびアッパーハウジング32間に形成された空間に収納される長方形状の基板33の表面には、携帯送・受信機11の右辺Rに臨む周縁部に沿って前記RFアンテナ19が固定される。軸線が相互に直交するように基板33に固定された3個のLFアンテナ16,17,18のうち、2個のLFアンテナ16,17はフェライトアンテナで構成され、残りの1個のLFアンテナ18はボビンを持たない長方形のエアコイルアンテナで構成されている。そしてエアコイルアンテナで構成されたLFアンテナ18は、携帯送・受信機11の下辺D、左辺Lおよび上辺Uに臨む基板33の周縁部とRFアンテナ19とに沿うように固定される。更に、基板33の表面には携帯送・受信機11の受信回路を含む電子回路を構成する多数の電子部品34…と1個のLED(発光ダイオード)35とが固定され、また基板33の中央部にはロアハウジング31のピン状の凸部31eが緩く貫通する貫通孔33aが形成される。貫通孔33aの裏側にはLED35が臨んでおり、LED35が発する光を貫通孔33aを通して視認することができる。
【0025】
携帯送・受信機11の上辺Uに臨む基板33の周縁部に、何れも弾性を有する金属板で構成された2個のプラス端子36,36と2個のマイナス端子37,37とが固定される。各々のプラス端子36は略180°屈曲し、その先端の接点36aは基板33の周縁部に沿って延びている。一方、各々のマイナス端子37は携帯送・受信機11の上辺Uに向かって延び、その先端に接点37aが形成される。
【0026】
図3および図6から明らかなように、アッパーハウジング32に設けた直線状の補強リブ32fが、RFアンテナ19とLFアンテナ18との間に形成された隙間αを遮るように延びている。従って、ハウジング30の厚さを増加させることなく、補強リブ32fによってハウジング30の剛性を高めて外力による曲がりを抑制し、その内部に収納した基板33に固定した電子部品34…等の損傷やハンダ付け部分の損傷を防止することができる。しかも補強リブ32fがRFアンテナ19およびLFアンテナ18間の絶縁壁を兼ねるので、LFアンテナ18にボビンを設けてRFアンテナ19との短絡を防止する必要がなくなり、部品点数の削減およびスペースの削減に寄与することができる。
【0027】
また基板33の表面には電子部品等が配置されていない十字状の隙間β,γが形成されており、この隙間β,γにアッパーハウジング32の十字状の補強リブ32g,32hが配置される。この十字状の補強リブ32g,32hの剛性向上効果により、ハウジング30の長さ方向および幅方向の曲がりを抑制し、その内部に収納した基板33に固定した電子部品34…等の損傷やハンダ付け部分の損傷を防止することができる。特に、十字状の補強リブ32g,32hは長方形のLFアンテナ18の内部に配置されおり、その4個の先端部は基板33の周縁部の手前位置で終わっているため、ハウジング30が外力で曲げられたときに補強リブ32g,32hが基板33の端縁に接触して大きな荷重が加わるのを防止することができる。
【0028】
しかも、電子回路を装着した基板33をハウジング30の内部に収納した状態で、基板33はロアハウジング31およびアッパーハウジング32に強固に固定されておらず、前後左右方向および上下方向(厚さ方向)に僅かに移動可能な隙間を有している。それに加えて、補強リブ32f,32g,32hの高さ方向の先端と基板33の表面との間に隙間が形成されているので(図6参照)、ハウジング30が曲げられたときにも、その内部に収納された基板33に曲げ荷重が伝達され難くなり、基板33の変形を最小限に抑えて耐久性を向上させることができる。
【0029】
図7〜図10に示すように、電池ホルダ38は、合成樹脂製のホルダ本体39と、このホルダ本体39に固定された金属製のキャップ40とを備える。ホルダ本体39には2個のコイン型の電池41,41を支持する2個の支持孔39a,39aが形成されており、その支持孔の周縁に段付きの電池支持面39b,39bが形成される。ホルダ本体39の両端部には、先端に係止爪39c,39cが形成された腕部39d,39dが設けられており、これらの係止爪39c,39cが係合可能な2個の係止部31g,31g(図8参照)がロアハウジング31に形成される。
【0030】
更に、ホルダ本体39の一対の腕部39d,39dの内側に前記支持孔39a,39aの一部を囲む第1、第2突起部39e,39fが形成されており、第1突起部39eに長さは第2突起部39fの長さよりも短く形成される。一方、ロアハウジング31には、前記第1突起部39eおよび第2突起部39fと協働するストッパ部31hが形成される(図8参照)。
【0031】
図7から明らかなように、電池41は、その一側面と外周面とによってプラス極41aが構成され、その他側面によってマイナス極41bが構成されており、外周面および他側面間の段部41cがホルダ本体39の電池支持面39bに嵌合するように支持孔39aに支持される。2個の電池41,41を電池ホルダ38に保持してハウジング30の内部に挿入すると、ホルダ本体39の弾性を有する一対の腕部39d,39dの先端に設けた係止爪39c,39cがロアハウジング31の係止部31g,31gに係合することで、電池ホルダ38がハウジング30に結合される。
【0032】
この状態で、電池41,41のプラス極41a,41aの外周部が基板33に設けたプラス端子36,36の接点36a,36aに弾性的に接触するとともに、電池41,41のマイナス極41b,41bが基板33に設けたマイナス端子37,37の接点37a,37aに弾性的に接触することで、携帯送・受信機11の電子回路が作動する。
【0033】
前述したように、基板33はハウジング30の内部に固定されておらず、僅かに移動できるように隙間が設けられているが、電池ホルダ38をハウジング30に結合すると、電池41,41の外周部が基板33のプラス端子36,36に当接して図8の矢印A方向に押圧することで、プラス端子36,36の弾発力で基板33が付勢されてハウジング30内面の下辺D側に押し付けられるため、基板33のガタつきや異音の発生を防止することができる。
【0034】
このように、プラス端子36,36の弾発力を利用することで、基板33をハウジング30に固定するための特別の固定部材や基板33をハウジング30に組み付ける組付工数を削減することができ、しかもハウジング30に加わる曲げや衝撃が基板33に伝わり難くすることができる。特に、基板33はハウジング30に対して前後左右に移動自在なだけでなく、厚さ方向にも移動自在であるため、ハウジング30が曲げられたときにハウジング30の変形量に比べて基板33の変形量を小さくすることができ、基板33に取り付けられた電子部品34等の損傷やハンダ付け部分の損傷を防止することができる。
【0035】
電池41,41を電池ホルダ38のホルダ本体39の支持孔39a,39aに表裏逆に装着すると、電池41,41の段部41c,41cとホルダ本体39の電池支持面39b,39bとが一致せず、電池41,41のマイナス極41b,41bがホルダ本体39から厚さ方向に突出してしまい、電池ホルダ38をハウジング30に挿入し難くなることで、電池41,41が表裏逆に装着されていることに気づき易くなる。
【0036】
仮に、電池41,41が表裏逆に装着されていることに気づかずに電池ホルダ38をハウジング30に無理に挿入した場合、図12に示すように、ハウジング30が撓むことで電池ホルダ38は一応ハウジング30に結合可能である。しかしながら、電池41,41の一側面のプラス極41a,41aが基板33のマイナス端子37,37の接点37a,37aに接触し、かつ電池41,41の外周部のプラス極41a,41aが基板33のプラス端子36,36の接点36a,36aに接触するために、つまり基板33のプラス端子36,36およびマイナス端子37,37が共に電池41,41のプラス極41a,41aに接触するために、電子回路に逆電流が流れて破損の原因になることが未然に防止される。
【0037】
また電池41,41を電池ホルダ38に正しく装着しても、電池ホルダ38を表裏逆にしてハウジング30に装着すると電子回路に給電することができなくなる。図8から明らかなように、電池ホルダ38の表裏に誤りがなければ、ホルダ本体39の短い方の第1突起部39eがロアハウジング31のストッパ部31hと干渉しないため、電池ホルダ38を正しくハウジング30に結合することができる。それに対して、図11から明らかなように、電池ホルダ38を表裏逆にしてハウジング30に挿入しようとすると、ホルダ本体39の長い方の第2突起部39fがロアハウジング31のストッパ部31hと干渉してしまい(図11のp点参照)、電池ホルダ38をハウジング30内に完全に挿入できなくなることで、電池ホルダ38の誤組みを確実に防止することができる。
【0038】
尚、電池ホルダ38をハウジング30から外すには、ホルダ本体39の一対の腕部39d,39dを2本の指で内向きに押して係止爪39c,39cを係止部31g,31gから外した後、腕部39d,39dを掴んだまま電池ホルダ38をハウジング30から引き抜けば良い。
【0039】
次に、携帯送・受信機11の電池41,41を交換したときに、その電池41,41が新しいものであるか否かを判定する機能について説明する。
【0040】
図13に示すように、携帯送・受信機11のコントロールユニット20に設けられた比較機51と電池41,41との間に、電源回路52と、リセット回路53と、基準電圧発生回路53とが接続されており、比較器51は電池41,41の電圧信号に基づいてLED35の点灯を制御する。
【0041】
しかして、図14のフローチャートのステップS1で電池41,41を交換した電池ホルダ38がハウジング30に結合されると、リセット回路53からの信号でリセット動作が開始される。続くステップS2で一定時間が経過するのを待ち、電池41,41が電子回路に接続された瞬間のサージ電流による電圧の変動が収まった後に、ステップS3でダミー負荷(例えば、RF受信回路)をオンさせる。ダミー負荷を作用させる理由は、消耗した古い電池41,41でも、負荷が作用しない状態では新品の電池41,41と同じ電圧を示す場合があるからである。続くステップS4で一定時間が経過して電池41,41の電圧が安定すると、ステップS5で電圧を読み込み、ステップS6でダミー負荷をオフさせる。
【0042】
続くステップS7で、前記ステップS5で読み込んだ電圧が携帯送・受信機11の動作可能電圧よりも高く、ステップS8で、前記ステップS5で読み込んだ電圧が新品の電池41,41の基準電圧(基準電圧発生回路53が発生する電圧)よりも高い場合には、その電池41,41が新品であると判断し、ステップS9でLEDを所定時間点灯させる正常表示を実行する。一方、前記ステップS8で電池41,41の電圧が前記基準電圧よりも低い場合には、その電池電池41,41が新品でないと判断し、ステップS10でLEDを所定時間点滅させる警告表示を実行する。また前記ステップS7で電池41,41の電圧が前記動作可能電圧よりも低ければ、ステップS11でLEDを消灯させたままにして表示を実行しない。
【0043】
尚、前記ステップS1でリセットが行われない場合、あるいは前記ステップS9〜S11で電池41,41の電圧の判定が行われた後は、ステップS12で携帯送・受信機11の通常動作が実行される。
【0044】
以上のように、携帯送・受信機11の電池41,41を交換したときに、LED35が点灯状態になれば、その電池41,41が新品であることを確認することができる。また電池41,41の交換時にLED35が点滅状態になれば、その電池41,41が古いことが確認できるので、新品の電池41,41を購入しておく等の手だてが可能になって利便性が向上する。また電池41,41の交換時にLED35が消灯状態になれば、その電池41,41では携帯送・受信機11を作動させられないことが確認できるので、新品の電池41,41との速やかな交換を促すことができる。
【0045】
更に、車両用遠隔施錠・解錠装置が作動しなくなったとき、携帯送・受信機11の電池41,41を一旦取り外した後にリセットし、そのときにLED35が消灯状態になれば、電池41,41の消耗により車両用遠隔施錠・解錠装置が作動しなくなったと判断することができ、LED35が点灯状態あるいは点滅状態になれば、携帯送・受信機11以外の車両用遠隔施錠・解錠装置に異常があると判断することができる。
【0046】
更にまた、携帯送・受信機11の電池41,41を一旦取り外した後にリセットすることで、電池41,41の状態を示すLED35を作動させるので、携帯送・受信機11に特別のチェックボタン等を設ける必要がなくなり、携帯送・受信機11が厚くなるのを回避することができる。
【0047】
以上、本発明の実施例を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【0048】
例えば、本発明の携帯機の用途は、車両Vのドア21L,21Rの施錠および解錠を行うための車両用遠隔施錠・解錠装置に限定されるものではない。
【0049】
また報知手段は実施例のLED35に限定されず、ランプ等の発光手段やブザー等の発音手段であっても良い。
【0050】
【発明の効果】
以上のように請求項1に記載された発明によれば、携帯機の電池を交換したときに、その電池から印加される電圧で電子回路が作動可能であれば報知手段を作動させるので、誤って携帯機に消耗した電池をセットすることが防止される。また報知手段が作動して電子回路が作動可能であるにも拘わらずにシステムが作動しない場合は、携帯機以外のシステムに異常があると判定することができる。更に、電池のチェックを開始するための特別のスイッチやボタンが不要であるため、携帯機のハウジングが厚型化するのを防止することができる。
【0051】
また請求項2に記載された発明によれば、交換した電池の電圧を予め設定した基準電圧と比較した結果に基づいて報知手段の作動態様を異ならせるので、報知手段の作動態様に基づいて電池の消耗度合いを認識することができ、電池が消耗している場合には新しい電池を予め準備することができて利便性が向上する。
【図面の簡単な説明】
【図1】車両用遠隔施錠・解錠装置の全体構成を示す図
【図2】車両用遠隔施錠・解錠装置のブロック図
【図3】携帯送・受信機の全体平面図
【図4】携帯送・受信機の分解斜視図
【図5】携帯送・受信機のアッパーハウジングを外した状態を示す図
【図6】図3の6−6線拡大断面図
【図7】電池ホルダの平面図
【図8】図3の要部拡大図(アッパーハウジングを外した状態)
【図9】図8の9−9線拡大断面図
【図10】図8の10−10線拡大断面図
【図11】図8に対応する作用説明図
【図12】図10に対応する作用説明図
【図13】電池の電圧判定回路のブロック図
【図14】電池の電圧判定ルーチンのフローチャート
【符号の説明】
16    LFアンテナ(アンテナ)
17    LFアンテナ(アンテナ)
18    LFアンテナ(アンテナ)
19    RFアンテナ(アンテナ)
30    ハウジング
35    LED(報知手段)
41    電池
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable device in which an electronic circuit to which an antenna is connected is housed inside a housing, and a battery for supplying operating power to the electronic circuit is detachable from the housing.
[0002]
[Prior art]
In a remote locking / unlocking device for a vehicle in which a person holding the portable device can lock or unlock the door by pressing a locking button or an unlocking button provided on the vehicle, when the battery of the portable device is exhausted, the vehicle side Japanese Patent Application Laid-Open Publication No. HEI 11-163556 discloses a system in which a notification unit provided in the above-described configuration operates to notify the battery running out.
[0003]
In a remote locking / unlocking device for a vehicle that locks and unlocks a door by emitting a control signal from a portable device owned by a vehicle user to a vehicle, a control signal is output by pressing a push button of the portable device. Japanese Patent Application Laid-Open Publication No. HEI 11-163556 discloses a technique in which an LED provided on a portable device is turned on or blinks when the control signal is on, thereby confirming that a control signal is being output.
[0004]
[Patent Document 1]
JP-A-60-64272 [Patent Document 2]
Japanese Utility Model Registration No. 2584259
[Problems to be solved by the invention]
By the way, the one described in Patent Document 1 can notify that the battery of the portable device in use is exhausted, but when the battery is set in the portable device, the battery has sufficient remaining capacity. Since it is not possible to determine whether the battery has the remaining capacity or has little remaining capacity, when an old battery is set by mistake, the battery may run out unexpectedly quickly and the system may not operate.
[0006]
In the device described in Patent Literature 2, the remaining capacity of the battery can be known by pressing the push button of the portable device and checking the light emitting state of the LED. However, the push button needs to be provided in the portable device. In addition, in a card-type portable device that requires a reduction in thickness, there is a problem that the thickness is increased by providing a push button.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to make it possible to check the consumption state of a battery while maintaining the thickness of a portable device.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, an electronic circuit to which an antenna is connected is housed in a housing, and a battery for supplying operating power to the electronic circuit is attached to and detached from the housing. A portable device has been proposed in which, when a battery is exchanged, a notification unit is operated if an electronic circuit can be operated with a voltage applied from the battery when the battery is replaced.
[0009]
According to the above configuration, when the battery of the portable device is replaced, if the electronic circuit is operable with the voltage applied from the battery, the notification unit is activated, so that the consumed battery is erroneously set in the portable device. Is prevented. When the system does not operate despite the electronic circuit being operable due to the operation of the notification means, it can be determined that there is an abnormality in a system other than the portable device. Further, since a special switch or button for starting the battery check is not required, it is possible to prevent the housing of the portable device from being thickened.
[0010]
According to the second aspect of the invention, in addition to the configuration of the first aspect, the voltage of the replaced battery is compared with a preset reference voltage, and the operation mode of the notification means is changed based on the comparison result. A portable device characterized by the above is proposed.
[0011]
According to the above configuration, since the operation mode of the notification unit is made different based on the result of comparing the voltage of the replaced battery with a preset reference voltage, it is possible to recognize the degree of battery consumption based on the operation mode of the notification unit. When the battery is exhausted, a new battery can be prepared in advance, and the convenience is improved.
[0012]
Note that the LF antennas 16, 17, 18 and the RF antenna 19 of the embodiment correspond to the antenna of the present invention, and the LED 35 of the embodiment corresponds to the notification means of the present invention.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0014]
1 to 14 show an embodiment of the present invention. FIG. 1 is a diagram showing the entire configuration of a remote locking / unlocking device for a vehicle, FIG. 2 is a block diagram of a remote locking / unlocking device for a vehicle, 3 is an overall plan view of the portable transmitter / receiver, FIG. 4 is an exploded perspective view of the portable transmitter / receiver, FIG. 5 is a diagram illustrating a state where an upper housing of the portable transmitter / receiver is removed, and FIG. 7 is a plan view of the battery holder, FIG. 8 is an enlarged view of a main part of FIG. 3 (with the upper housing removed), and FIG. 9 is an enlarged sectional view of line 9-9 in FIG. 10, FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 8, FIG. 11 is an operation explanatory view corresponding to FIG. 8, FIG. 12 is an operation explanatory view corresponding to FIG. 10, and FIG. 13 is a block diagram of a battery voltage determination circuit. FIG. 14 is a flowchart of a battery voltage determination routine.
[0015]
As shown in FIGS. 1 and 2, a remote locking / unlocking device for a vehicle for locking and unlocking a door of a vehicle V without using a key is intended for a vehicle user to carry in a pocket or bag. And a card-type portable transmitter / receiver 11. An LF (low frequency) receiver 13, an RF (radio frequency) transmitter 14, and an RF (radio frequency) receiver 15 are connected to the control unit 12 of the portable transmitter / receiver 11, and the LF receiver The device 13 is connected to three LF antennas 16, 17, and 18, and the RF transmitter 14 and the RF receiver 15 are connected to a common RF antenna 19.
[0016]
On the other hand, the control unit 20 provided on the vehicle V side includes a lock switch 22L and an unlock switch 23L provided on the left door 21L, a lock switch 22R and an unlock switch 23R provided on the right door 21R, and LF. The transmitter 24, the RF transmitter 25, the RF receiver 26, and the door lock actuator 27 are connected. The left and right LF antennas 28L and 28R are connected to the LF transmitter 24, and the RF transmitter A common RF antenna 29 is connected to 25 and the RF receiver 26.
[0017]
When the vehicle user wearing the portable transmitter / receiver 11 presses the unlock switch 23L of the left door 21L or the unlock switch 23R of the right door 21R, the LF antennas 28L and 28R on the vehicle V side. When the ID request signal is transmitted and the LF antennas 16 to 18 receive the ID request signal, the portable transmitter / receiver 11 transmits the ID signal stored in the control unit 12 from the RF antenna 19. The control unit 20, which has received the ID signal with the RF antenna 29 on the vehicle V side, checks whether the ID is a legitimate ID, and if the ID is a legitimate ID, transmits a random number signal x from the RF antenna 29.
[0018]
The portable transmitter / receiver 11 having received the random number signal x by the RF antenna 19 transmits a function signal f (x) calculated from the random number signal x based on the program stored in the control unit 12 from the RF antenna 19, and the function The control unit 20, which has received the signal f (x) by the RF antenna 29 on the vehicle V side, compares the function signal f (x) calculated from the random number signal x with the received function signal f (x). If they match, the door lock actuator 27 is operated to unlock the doors 21L and 21R.
[0019]
Similarly, when the vehicle user wearing the portable transmitter / receiver 11 presses the lock switch 22L of the left door 21L or the lock switch 22R of the right door 21R, the control unit 20 activates the lock actuator 27. The doors 21L and 21R are locked.
[0020]
Next, the structure of the portable transmitter / receiver 11 will be described with reference to FIGS.
[0021]
As shown in FIGS. 3 to 5, the portable transmitter / receiver 11 is a card type having a rectangular shape as a whole, and is formed to be extremely thin so as to be easily stored in a wallet or the like. Hereinafter, the four sides of the portable transmitter / receiver 11 forming a rectangle are referred to as a right side R, a left side L, an upper side U, and a lower side D (see FIG. 3).
[0022]
The housing 30 of the portable transmitter / receiver 11 is divided into a lower housing 31 and an upper housing 32 formed in a rectangular shape with a synthetic resin, and is formed along the right side R, the left side L, and the lower side D of the lower housing 31. Grooved concave portion 31a, three groove-shaped concave portions 31b, 31c, 31d formed near the upper side U, and a pin-shaped convex portion 31e formed near the center of the concave portion 31a. A rib-shaped protrusion 32a formed along the right side R, the left side L, and the lower side D of the upper housing 32; and three rib-shaped protrusions 32b, 32c, 32d formed near the upper side U, The hole-shaped concave portions 32e formed near the center of the convex portions 32a are fitted respectively, and the lower housing 31 and the upper housing 32 are fixed by welding at those fitted portions. .
[0023]
On the inner surface of the upper housing 32, a linear reinforcing rib 32f extending in the length direction (the direction of the right side R and the left side L) and a cross shape extending in the length direction and the width direction (the direction of the upper side U and the lower side D) are provided. Reinforcing ribs 32g and 32h are formed, and the recess 32e is located at the intersection of the cross-shaped reinforcing ribs 32g and 32h. The upper housing 32 is formed with one through hole 32i penetrating the front and back sides. Further, when the lower housing 31 and the upper housing 32 are connected to each other, two positioning holes 31f, 31f formed in the lower housing 31 are used to position the two. Of the positioning pins 32j, 32j.
[0024]
The RF antenna 19 is fixed to a surface of a rectangular substrate 33 accommodated in a space formed between the lower housing 31 and the upper housing 32 along a peripheral portion facing the right side R of the portable transmitter / receiver 11. You. Of the three LF antennas 16, 17, 18 fixed to the substrate 33 so that their axes are orthogonal to each other, two LF antennas 16, 17 are formed of ferrite antennas, and the other LF antenna 18 Is composed of a rectangular air coil antenna having no bobbin. The LF antenna 18 composed of an air coil antenna is fixed along the periphery of the substrate 33 facing the lower side D, the left side L, and the upper side U of the portable transmitter / receiver 11 and the RF antenna 19. Further, on the surface of the substrate 33, a large number of electronic components 34 and one LED (light emitting diode) 35 constituting an electronic circuit including a receiving circuit of the portable transmitter / receiver 11 are fixed. The portion is formed with a through hole 33a through which the pin-shaped convex portion 31e of the lower housing 31 penetrates loosely. The LED 35 faces the back side of the through hole 33a, and light emitted from the LED 35 can be visually recognized through the through hole 33a.
[0025]
Two plus terminals 36, 36 and two minus terminals 37, 37, both made of an elastic metal plate, are fixed to the periphery of the substrate 33 facing the upper side U of the portable transmitter / receiver 11. You. Each positive terminal 36 is bent by approximately 180 °, and a contact 36 a at the tip thereof extends along the peripheral edge of the substrate 33. On the other hand, each minus terminal 37 extends toward the upper side U of the portable transmitter / receiver 11, and a contact 37a is formed at the tip thereof.
[0026]
As is clear from FIGS. 3 and 6, a linear reinforcing rib 32 f provided on the upper housing 32 extends so as to block the gap α formed between the RF antenna 19 and the LF antenna 18. Accordingly, without increasing the thickness of the housing 30, the rigidity of the housing 30 is increased by the reinforcing ribs 32f to suppress bending due to external force, and damage or soldering of the electronic components 34 fixed to the substrate 33 housed therein is reduced. Damage to the attachment portion can be prevented. Moreover, since the reinforcing rib 32f also serves as an insulating wall between the RF antenna 19 and the LF antenna 18, it is not necessary to provide a bobbin on the LF antenna 18 to prevent a short circuit with the RF antenna 19, thereby reducing the number of parts and the space. Can contribute.
[0027]
Further, cross-shaped gaps β and γ in which electronic components and the like are not arranged are formed on the surface of the substrate 33, and cross-shaped reinforcing ribs 32g and 32h of the upper housing 32 are arranged in the gaps β and γ. . Due to the rigidity improving effect of the cross-shaped reinforcing ribs 32g and 32h, bending in the length direction and the width direction of the housing 30 is suppressed, and the electronic components 34 fixed to the substrate 33 housed therein are damaged or soldered. Part damage can be prevented. In particular, the cross-shaped reinforcing ribs 32g and 32h are arranged inside the rectangular LF antenna 18, and their four ends end short of the peripheral edge of the substrate 33, so that the housing 30 is bent by an external force. When this is done, it is possible to prevent the reinforcement ribs 32g and 32h from contacting the edge of the substrate 33 and applying a large load.
[0028]
In addition, in a state in which the board 33 on which the electronic circuit is mounted is housed inside the housing 30, the board 33 is not firmly fixed to the lower housing 31 and the upper housing 32, and the front, rear, left and right directions and the up and down direction (thickness direction). Has a slightly movable gap. In addition, since a gap is formed between the front ends of the reinforcing ribs 32f, 32g, and 32h in the height direction and the surface of the substrate 33 (see FIG. 6), even when the housing 30 is bent, the gap is formed. The bending load is less likely to be transmitted to the substrate 33 housed inside, and the deformation of the substrate 33 can be minimized to improve the durability.
[0029]
As shown in FIGS. 7 to 10, the battery holder 38 includes a holder body 39 made of a synthetic resin, and a metal cap 40 fixed to the holder body 39. The holder main body 39 has two support holes 39a, 39a for supporting two coin-type batteries 41, 41, and stepped battery support surfaces 39b, 39b are formed on the periphery of the support holes. You. At both ends of the holder body 39, there are provided arms 39d, 39d each having a locking claw 39c, 39c formed at the tip, and two locking hooks with which these locking claws 39c, 39c can be engaged. Portions 31g, 31g (see FIG. 8) are formed in the lower housing 31.
[0030]
Further, first and second projections 39e, 39f surrounding a part of the support holes 39a, 39a are formed inside the pair of arms 39d, 39d of the holder body 39, and the first projection 39e has a long length. The length is formed shorter than the length of the second protrusion 39f. On the other hand, the lower housing 31 is formed with a stopper 31h that cooperates with the first protrusion 39e and the second protrusion 39f (see FIG. 8).
[0031]
As is clear from FIG. 7, the battery 41 has a positive electrode 41a formed by one side surface and an outer peripheral surface, a negative electrode 41b formed by the other side surface, and a step 41c between the outer peripheral surface and the other side surface. The holder main body 39 is supported by the support holes 39a so as to be fitted to the battery support surface 39b. When the two batteries 41, 41 are held by the battery holder 38 and inserted into the housing 30, the locking claws 39c, 39c provided at the tips of the pair of elastic arms 39d, 39d of the holder body 39 are lower. The battery holder 38 is coupled to the housing 30 by engaging with the locking portions 31 g of the housing 31.
[0032]
In this state, the outer peripheries of the positive electrodes 41a of the batteries 41, 41 elastically contact the contacts 36a, 36a of the positive terminals 36, 36 provided on the substrate 33, and the negative electrodes 41b, 41b of the batteries 41, 41. The electronic circuit of the portable transmitter / receiver 11 operates when the contact 41b elastically contacts the contacts 37a, 37a of the minus terminals 37, 37 provided on the substrate 33.
[0033]
As described above, the substrate 33 is not fixed inside the housing 30 and is provided with a gap so as to be able to move slightly. However, when the battery holder 38 is coupled to the housing 30, the outer peripheral portions of the batteries 41 Abuts against the positive terminals 36, 36 of the substrate 33 and presses in the direction of arrow A in FIG. 8, the substrate 33 is urged by the resilience of the positive terminals 36, 36, so that the lower surface D side of the inner surface of the housing 30 Since the pressing is performed, it is possible to prevent rattling of the substrate 33 and generation of abnormal noise.
[0034]
As described above, by using the elasticity of the positive terminals 36, 36, a special fixing member for fixing the board 33 to the housing 30 and the number of assembling steps for assembling the board 33 to the housing 30 can be reduced. In addition, it is possible to make it difficult for bending and impact applied to the housing 30 to be transmitted to the substrate 33. In particular, since the substrate 33 is not only movable in the front, rear, left and right directions with respect to the housing 30 but also movable in the thickness direction, when the housing 30 is bent, the amount of deformation of the substrate 33 The amount of deformation can be reduced, and damage to the electronic components 34 and the like attached to the substrate 33 and damage to soldered portions can be prevented.
[0035]
When the batteries 41, 41 are mounted upside down in the support holes 39a, 39a of the holder main body 39 of the battery holder 38, the step portions 41c, 41c of the batteries 41, 41 coincide with the battery support surfaces 39b, 39b of the holder main body 39. However, the negative poles 41b, 41b of the batteries 41, 41 protrude from the holder body 39 in the thickness direction, and it becomes difficult to insert the battery holder 38 into the housing 30, so that the batteries 41, 41 are mounted upside down. It becomes easy to notice that there is.
[0036]
If the battery holder 38 is forcibly inserted into the housing 30 without noticing that the batteries 41 and 41 are mounted upside down, as shown in FIG. It can be connected to the housing 30 for the time being. However, the positive electrodes 41a, 41a on one side of the batteries 41, 41 are in contact with the contacts 37a, 37a of the minus terminals 37, 37 of the substrate 33, and the positive electrodes 41a, 41a on the outer periphery of the batteries 41, 41 are connected to the substrate 33. In order to make contact with the contacts 36a, 36a of the plus terminals 36, 36, that is, in order that both the plus terminals 36, 36 and the minus terminals 37, 37 of the substrate 33 contact the plus poles 41a, 41a of the batteries 41, 41, It is possible to prevent a reverse current from flowing through the electronic circuit to cause damage.
[0037]
Further, even if the batteries 41 are correctly mounted on the battery holder 38, if the battery holder 38 is mounted upside down on the housing 30, power cannot be supplied to the electronic circuit. As is clear from FIG. 8, if there is no error in the front and back of the battery holder 38, the shorter first protrusion 39 e of the holder main body 39 does not interfere with the stopper 31 h of the lower housing 31. 30. On the other hand, as is apparent from FIG. 11, when the battery holder 38 is inserted upside down into the housing 30, the longer second protrusion 39 f of the holder main body 39 interferes with the stopper 31 h of the lower housing 31. As a result, the battery holder 38 cannot be completely inserted into the housing 30 (see the point p in FIG. 11), so that erroneous assembly of the battery holder 38 can be reliably prevented.
[0038]
In order to remove the battery holder 38 from the housing 30, the pair of arms 39d, 39d of the holder main body 39 are pushed inward with two fingers to remove the locking claws 39c, 39c from the locking portions 31g, 31g. Thereafter, the battery holder 38 may be pulled out of the housing 30 while holding the arms 39d and 39d.
[0039]
Next, a description will be given of a function of determining whether or not the batteries 41, 41 of the portable transmitter / receiver 11 are new when the batteries 41, 41 are replaced.
[0040]
As shown in FIG. 13, a power supply circuit 52, a reset circuit 53, and a reference voltage generation circuit 53 are provided between a comparator 51 provided in the control unit 20 of the portable transmitter / receiver 11 and the batteries 41. Is connected, and the comparator 51 controls lighting of the LED 35 based on voltage signals of the batteries 41, 41.
[0041]
When the battery holder 38 whose batteries 41 have been replaced in step S1 in the flowchart of FIG. 14 is coupled to the housing 30, a reset operation is started by a signal from the reset circuit 53. In a succeeding step S2, a predetermined time elapses. After the voltage fluctuation due to the surge current at the moment when the batteries 41, 41 are connected to the electronic circuit stops, a dummy load (for example, an RF receiving circuit) is removed in a step S3. Turn on. The reason why the dummy load is applied is that even when the old batteries 41, 41 have been exhausted, they may show the same voltage as the new batteries 41, 41 in a state where no load is applied. When the voltage of the batteries 41 is stabilized after a predetermined time has passed in step S4, the voltage is read in step S5, and the dummy load is turned off in step S6.
[0042]
In a succeeding step S7, the voltage read in the step S5 is higher than the operable voltage of the portable transmitter / receiver 11, and in a step S8, the voltage read in the step S5 is higher than the reference voltage of the new batteries 41. If the voltage is higher than the voltage generated by the voltage generation circuit 53), it is determined that the batteries 41 are new, and a normal display for turning on the LED for a predetermined time is executed in step S9. On the other hand, when the voltage of the batteries 41, 41 is lower than the reference voltage in step S8, it is determined that the batteries 41, 41 are not new, and a warning display for blinking the LED for a predetermined time is executed in step S10. . If the voltage of the batteries 41 is lower than the operable voltage in step S7, the display is not executed with the LED turned off in step S11.
[0043]
If the reset is not performed in step S1 or if the voltages of the batteries 41 are determined in steps S9 to S11, the normal operation of the portable transmitter / receiver 11 is executed in step S12. You.
[0044]
As described above, if the LED 35 is turned on when the batteries 41 of the portable transmitter / receiver 11 are replaced, it can be confirmed that the batteries 41 are new. If the LED 35 flashes when the batteries 41 are replaced, it is possible to confirm that the batteries 41, 41 are old, so that it is possible to purchase new batteries 41, 41, etc. Is improved. If the LED 35 is turned off when the batteries 41 are replaced, it can be confirmed that the portable transmitter / receiver 11 cannot be operated with the batteries 41. Therefore, the batteries 41 can be promptly replaced with new batteries 41. Can be encouraged.
[0045]
Further, when the remote locking / unlocking device for the vehicle stops operating, the battery 41 of the portable transmitter / receiver 11 is once removed and reset, and if the LED 35 is turned off at that time, the battery 41, 41 is turned off. It can be determined that the remote locking / unlocking device for the vehicle has stopped operating due to the consumption of 41, and if the LED 35 is turned on or blinking, the remote locking / unlocking device for the vehicle other than the portable transmission / reception device 11 is used. Can be determined to be abnormal.
[0046]
Furthermore, by removing the batteries 41 of the portable transmitter / receiver 11 once and resetting them, the LED 35 indicating the state of the batteries 41, 41 is activated, so that a special check button or the like is provided on the portable transmitter / receiver 11. Need not be provided, and the portable transmitter / receiver 11 can be prevented from becoming thicker.
[0047]
The embodiments of the present invention have been described above. However, various design changes can be made in the present invention without departing from the gist thereof.
[0048]
For example, the application of the portable device of the present invention is not limited to a vehicle remote locking / unlocking device for locking and unlocking the doors 21L and 21R of the vehicle V.
[0049]
The notifying means is not limited to the LED 35 of the embodiment, but may be a light emitting means such as a lamp or a sounding means such as a buzzer.
[0050]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the battery of the portable device is replaced, if the electronic circuit is operable with the voltage applied from the battery, the notifying means is activated. Therefore, setting of the exhausted battery in the portable device is prevented. When the system does not operate despite the electronic circuit being operable due to the operation of the notification means, it can be determined that there is an abnormality in a system other than the portable device. Further, since a special switch or button for starting the battery check is not required, it is possible to prevent the housing of the portable device from being thickened.
[0051]
According to the second aspect of the present invention, the operation mode of the notification means is made different based on the result of comparing the voltage of the replaced battery with a preset reference voltage. Can be recognized, and when the battery is exhausted, a new battery can be prepared in advance, thereby improving convenience.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a remote locking / unlocking device for a vehicle. FIG. 2 is a block diagram of a remote locking / unlocking device for a vehicle. FIG. 3 is an overall plan view of a portable transmitting / receiving device. FIG. 5 is an exploded perspective view of the portable transmitter / receiver. FIG. 5 is a view showing a state where an upper housing of the portable transmitter / receiver is removed. FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 3 FIG. FIG. 8 is an enlarged view of a main part of FIG. 3 (with the upper housing removed).
9 is an enlarged sectional view taken along line 9-9 of FIG. 8; FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 8; FIG. 11 is an operation explanatory view corresponding to FIG. 8; FIG. FIG. 13 is a block diagram of a battery voltage determination circuit. FIG. 14 is a flowchart of a battery voltage determination routine.
16 LF antenna (antenna)
17 LF antenna (antenna)
18 LF antenna (antenna)
19 RF antenna (antenna)
30 housing 35 LED (notification means)
41 batteries

Claims (2)

アンテナ(16〜18,19)が接続された電子回路をハウジング(30)の内部に収納し、電子回路に動作電源を供給する電池(41)をハウジング(30)に対して着脱自在とした携帯機において、
電池(41)を交換したときに、その電池(41)から印加される電圧で電子回路が作動可能であれば報知手段(35)を作動させることを特徴とする携帯機。
An electronic circuit to which antennas (16-18, 19) are connected is housed inside a housing (30), and a battery (41) for supplying operating power to the electronic circuit is detachably mounted on the housing (30). On the machine,
A portable device characterized in that, when a battery (41) is replaced, a notifying means (35) is operated if an electronic circuit can be operated with a voltage applied from the battery (41).
交換した電池(41)の電圧を予め設定した基準電圧と比較し、比較結果に基づいて報知手段(35)の作動態様を異ならせることを特徴とする、請求項1に記載の携帯機。The portable device according to claim 1, wherein the voltage of the replaced battery (41) is compared with a preset reference voltage, and the operation mode of the notification means (35) is changed based on the comparison result.
JP2002294526A 2002-10-08 2002-10-08 Portable machine Expired - Fee Related JP3923404B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002294526A JP3923404B2 (en) 2002-10-08 2002-10-08 Portable machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002294526A JP3923404B2 (en) 2002-10-08 2002-10-08 Portable machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2006287962A Division JP4287455B2 (en) 2006-10-23 2006-10-23 Portable machine

Publications (2)

Publication Number Publication Date
JP2004131937A true JP2004131937A (en) 2004-04-30
JP3923404B2 JP3923404B2 (en) 2007-05-30

Family

ID=32285044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002294526A Expired - Fee Related JP3923404B2 (en) 2002-10-08 2002-10-08 Portable machine

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011132770A (en) * 2009-12-25 2011-07-07 Tokai Rika Co Ltd Electronic key

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011132770A (en) * 2009-12-25 2011-07-07 Tokai Rika Co Ltd Electronic key

Also Published As

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JP3923404B2 (en) 2007-05-30

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