JP4337166B2

JP4337166B2 - Communication device, charging terminal structure and insulation switch

Info

Publication number: JP4337166B2
Application number: JP13673299A
Authority: JP
Inventors: 厚山下; 信也木下; 雄三大石; 博志西山; 隆志紙谷; 吉弘西川; 徹坂田
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1998-06-12
Filing date: 1999-05-18
Publication date: 2009-09-30
Anticipated expiration: 2019-05-18
Also published as: JP2000100476A

Description

【０００１】
【発明の属する技術分野】
本発明は、電話回線を介して通信する通信装置、および子機等の移動機に内蔵されたバッテリーを充電するための充電端子構造および絶縁スイッチに関するものである。
【０００２】
【従来の技術】
一般にコードレス電話機は、親機のクレイドルに子機を装着したときに子機に充電させ、子機を装着しないときに親機の充電端子と電話回線の絶縁を行わせて感電を防止する構成となっている。そして前記親機における充電端子の表出した部分を電話回線から絶縁する手段としては、回路基板上にトランス、フォトカプラ、リレー、コンデンサ等の絶縁部品を使用している。
【０００３】
図１５は従来の通信装置の充電端子を主とする回路構成を示し、図において１は子機であり、充電端子２を備え、親機３のクレイドルに収容自在となっている。８は電源、９は送話回路、１０は受話回路、１１は電話回線である。
【０００４】
親機３は、クレイドルの内側に充電端子４を備え、子機１をクレイドルに収納したとき、子機１の充電端子２と親機３の充電端子４の表出した部分同士を接触させて、子機１内部のバッテリーを充電させるようにしている。
【０００５】
また、前記親機３においては、充電端子４に人体が触れたときの感電防止のために、親機３内部の回路基板上で、２次側の充電回路５と１次側の回線ネットワーク回路６の間を、トランス、フォトカプラ、リレー、コンデンサ等の絶縁部品７で絶縁している。
【０００６】
【発明が解決しようとする課題】
しかしながら上記従来の構成では、親機３の充電端子４に人体が触れたときの感電防止のために、トランス、フォトカプラ、リレー、コンデンサ等の絶縁部品７を使用していることから、コストアップになる。また、絶縁部品７にトランスを使用すると通話ロスが発生し、音質が低下するとともに、トランスのインピーダンスにより電話回線１１とのインピーダンスのマッチングが困難であり、送話信号が受話器に回り込む側音特性の向上が図れないという課題があった。
【０００７】
本発明は上記従来の課題に鑑み、絶縁部品を使用せずに親機の充電端子と電話回線との絶縁を行い、コストダウン、およびトランス廃止による音質の低下防止、側音特性の向上を可能にする通信装置および充電端子構造および絶縁スイッチを提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明は前記目的を達成するために、トランス、フォトカプラ、リレー、コンデンサ等の絶縁部品に代えて、移動機の装着により作動する絶縁スイッチを設け、この絶縁スイッチにより固定機の充電端子を電話回線から絶縁する構成とする。この構成により、トランス、フォトカプラ、リレー、コンデンサ等の絶縁部品を使用せずに、充電端子の表出した部分と電話回線との間の絶縁を確保する。
【０００９】
【発明の実施の形態】
本発明の第１の発明は、充電可能なバッテリーを備えた移動機と、電話回線に接続され、前記バッテリーを充電するための充電回路を内蔵する固定機から成り、移動機を固定機に着脱する構成の通信装置であって、移動機と固定機はそれぞれ、互い接触可能な充電端子を有し、固定機の充電端子と内部の充電回路との間に絶縁スイッチを設け、固定機に対して移動機を装着していない時には絶縁スイッチをオフ状態として固定機の充電端子を充電回路から切り離して電話回線から絶縁し、固定機に対して移動機を装着している時には前記移動機により絶縁スイッチをオン状態として充電回路と接続して充電状態にすることを特徴とする通信装置であり、このように構成することにより、トランス、フォトカプラ、リレー、コンデンサ等の絶縁部品が不要となり、コストダウンが図れるという作用を有する。
【００１０】
本発明の第２の発明は、第１の発明の通信装置において、絶縁スイッチは固定機のクレイドル内に配置され、移動機に前記絶縁スイッチを作動させる凸部を設けたものであり、人体が不用意に絶縁スイッチに触れてオン状態にしてしまう可能性は少ない。
【００１１】
本発明の第３の発明は、第１の発明の通信装置において、絶縁スイッチは、充電端子と電話回線に接続されている充電回路とを絶縁するために必要な端子間距離を確保させたものであり、安全性を確保するという作用を有する。
【００１２】
本発明の第４の発明は、固定機の充電端子を移動機が装着されている場合、その正端子及び負端子の一対の接点が、同時に接続され、移動機が装着されていない場合、その端子及び負端子の一対の接点が、同時に切り離され、充電回路及び、電話回線の１次側、２次側を、ＯＮ又は、ＯＦＦすることを特徴とし、感電等に対する安全性を確保するという作用を有する。
【００１３】
本発明の第５の発明は、移動機の底面に設けられた充電端子と、移動機内のバッテリーを充電するための充電回路を内蔵した固定機に設けられた充電端子と、移動機に当接可能なレバーを備えた絶縁スイッチとを備えるとともに、前記固定機に対して前記移動機を装着していない時には固定機の充電端子を充電回路から切り離し、固定機に対して移動機を装着している時には前記移動機によって押されたレバーにより前記充電端子と充電回路を接続し、移動機側充電端子が固定機側充電端子を押す力の方向と、移動機がレバーを押す力の方向を変え、移動機の荷重方向を分散させるように構成したことを特徴とする充電端子構造であり、このように移動機の荷重方向を分散させることで充電時の回線を接続、非充電時の回線を絶縁することを特徴とする充電端子構造であり、この構成により、限られた子機自重を利用し機能を果たす為、子機自重の増加や子機位置を固定する機構を廃止できる為、部品点数の削減や構造の簡素化に有効である。
【００１５】
以下、本発明の通信装置の一例としてコードレス電話機について具体的に
説明する。
【００１６】
（実施の形態１）
図１は、本実施の形態のコードレス電話機の回路構成図である。なお、前記従来の技術として説明したコードレス電話機と同一の構成部には同一符号を付与している。
【００１７】
図１において、１はコードレス電話機の子機（移動機）、２は子機１に備わった充電端子である。３はコードレス電話機の親機（固定機）である。親機３は電話回線に接続するための回線ネットワーク回路等の他に、子機１内のバッテリーを充電するための充電回路を内蔵している。
【００１８】
４は親機３に備わった充電端子である。子機１は、親機３に形成された凹部すなわちクレイドルに収容自在となっている。５は充電回路、６は回線ネットワーク回路である。８は電源、９は送話回路、１０は受話回路、１１は電話回線である。
【００１９】
親機３は、クレイドルの内側に充電端子４を備え、子機１をクレイドルに収納したとき、子機１の充電端子２と親機３の充電端子４の表出した部分同士が接触する。１２は絶縁スイッチである。絶縁スイッチ１２は、親機３における２次側と１次側間、ここでは親機３の充電端子４と充電回路５間に設けられ、充電回路５の正端子と負端子にそれぞれ対応する一対の接点１２ａ，１２ｂを備えている。絶縁スイッチ１２は親機３への子機１の装着により作動し、一対の接点１２ａ，１２ｂが同時に開閉する。親機３から子機１を離した時には、接点１２ａ，１２ｂの双方が充電回路５から離され、充電回路５の正端子と負端子は共に充電端子４から電気的に遮断される。
【００２０】
絶縁スイッチ１２は、以上に示すように構成され、感電防止のため人体が触れることのないように親機３のキャビネットより凹んだ位置、すなわち親機３のクレイドル１３内の充電端子４に近接した位置に設けられている。
【００２１】
図２は本発明の実施の形態における充電端子構造および絶縁スイッチを備えたコードレス電話機を示す外観図である。図２において、充電端子２は子機１の底面に設けられている。１ａは子機１の底部に突設され、親機側のレバーを押す突起部である。
【００２２】
図３（ｂ）は親機３を図３（ａ）に示した線Ａ−Ａに沿って切断した場合の断面図、図３（ｃ）は親機３を図３（ａ）に示した線Ｂ−Ｂに沿って切断した場合の断面図である。図３（ｃ）において、親機３に設けた充電端子４は金属製の板バネ材を折り曲げ加工することによって作られている。充電端子４は、先端がクレイドルの内側に表出し、バネ性を有する板状部１４によって突出する方向に付勢されている。１５は出没自在に保持されたレバーである。１６は充電回路側と電気的に接続された板バネ材である。
【００２３】
子機１を親機３に収納していないときは、親機側のレバー１５は押し込まれること無くは図３（ｃ）に示すように、親機側の充電端子４と充電回路との間を遮断し、絶縁スイッチ１２はオフ状態となる。この時、回路上では充電端子４の表出した部分と電話回線１１は絶縁される。
【００２４】
図４に示すように、子機１を親機３のクレイドル上に載置すると、子機１の突起部１ａによってレバー１５が押され、このレバー１５が板バネ材１６を押して板状部１４に接触させる。板バネ材１６と板状部１４が接触することにより、充電回路と充電端子４が導通し、絶縁スイッチ１２はオン状態となる。これにより、充電回路からの充電電流が板バネ材１６，板状部１４，充電端子４，充電端子２を介して子機へ流れ、子機内のバッテリーが充電される。また回路上、親機側の充電端子４の表出金属と電話回線１１とが導通することになるが、この状態では充電端子４を人が触れることは不可能である。
【００２５】
以上のように本実施の形態のコードレス電話機の充電端子絶縁装置は、親機における充電端子の表出した部分を電話回線から絶縁するために、子機の親機への着脱で作動する絶縁用の絶縁スイッチを設けたことにより、従来、絶縁するために使用していたトランス、フォトカプラ、リレー、コンデンサ等の絶縁部品が不要となり、コストダウンが可能となる。また、トランス廃止による音質低下の防止、および側音特性の向上が可能となる。
【００２６】
（実施の形態２）
図５は本発明の他の実施の形態における充電端子構造を示す外観図、図６は同実施の形態におけるコードレス電話機の充電端子の部分を示す平面図である。図５および図６において、充電端子２は子機１の底面に設けられている。親機３に設けられた絶縁スイッチは、子機１を親機３に収納していないときに親機側の充電端子４と充電回路との間を遮断する。
【００２７】
図７（ａ）は同実施の形態における充電端子構造の移動機側の構造を示す詳細図、図７（ｂ）は同実施の形態における充電端子構造および絶縁スイッチの構造細図図である。図７において、２２は出没自在に保持されたレバーである。レバー２２の先端部２２ａはクレイドルの底部に表出している。矢印Ａは子機側の充電端子２が親機側の充電端子４を押す力の方向を示す。また矢印Ｂは子機がレバー２２を押す力の方向を示す。このように２つの力の方向を変え、子機の荷重方向を分散させている。
【００２８】
２４は充電端子４と導通した金属板である。２３はダブルトーションバネ構造を持ったトーションバネであり、トーションバネ２３はレバー２２を突出方向に付勢するとともに、金属板２４と接触する充電回路側接点としての機能を兼ね備えている。
【００２９】
図８は同実施の形態における絶縁スイッチのトーションバネの構造を示す詳細図である。２３ａは第１のコイル部、２３ｂは第２のコイル部である。２３ｃは接点である。トーションバネ２３は充電回路と電気的に導通接続した状態で保持され、トーションバネ２３の接点２３ｃが金属板２４と接触することにより、充電回路と充電端子４が導通するようになる。
【００３０】
第１のコイル部２３ａにおけるバネ定数は比較的小さく、第１のコイル部２３ａによって生じる力によってレバー２２を突出方向に付勢している。第２のコイル部２３ｂにおけるバネ定数は比較的強く、第２のコイル部２３ｂによって生じる力によって接点２３ｃが金属板２４に押し付けられる。
【００３１】
また、絶縁スイッチ１２の端子間距離すなわちオフ状態における接点２３ｃと金属板２４の間隔は２．５ｍｍ（各国の規格により異なる）として安全性を確保している。そして、金属板２４は親機３の充電端子４に接続され、トーションバネ２３は充電回路５に接続され、絶縁スイッチのオン／オフ動作により親機３の充電端子４と充電回路５間を接続、切り離すようにしている。
【００３２】
子機１において、１ａは子機１の底部に突設され、レバー２２を押す突起部である。図中の１７は親機３内の回路基板である。
【００３３】
子機１を親機３のクレイドル１３に収納していない状態では、絶縁スイッチが図７に示すように親機側のレバー２２は押し込まれること無く、金属板２４と接点２３ｃを離し、オフ状態となる。この時、回路上では充電端子４の表出した部分と電話回線１１は絶縁される。
【００３４】
子機１を親機３のクレイドル１３に収納した状態では、子機１の突起部１ａにより絶縁スイッチ１２のレバー２２を押し、絶縁スイッチ１２がオン状態となる。図９は同絶縁スイッチにおいて、レバー２２が押し込まれた状態を示す。子機１を親機３に収納するとき、子機の突起部１ａがレバー２２に当たり、レバー２２が図９に示すように押し込まれる。それに伴ってトーションバネ２３は円運動を行い、内部の接点２３ｃが金属板２４に接する。
【００３５】
このように金属板２４と接点２３ｃが接することで充電回路からの充電電流が金属板２４，接点２３ｃ，充電端子４，充電端子２を介して子機へ流れ、子機内のバッテリーが充電される。また回路上、親機側の充電端子４の表出金属と電話回線１１とが導通することになるが、この状態では充電端子４を人が触れることは不可能である。
【００３６】
（実施の形態３）
図１０は本発明の他の実施の形態における充電端子構造を示す外観図、図１１は同充電端子構造の親機側の構造を示す平面図である。図１０および図１１において親機側の充電端子４と子機側の充電端子２は前実施の形態の場合と同じ位置に配置されている。親機３に設けられた絶縁スイッチは、前実施の形態の場合と同様、子機１を親機３に収納していないときに親機側の充電端子４と充電回路との間を遮断する。
【００３７】
図１２（ａ）は本発明の第３実施の形態における充電端子構造の移動機側の構造を示す詳細図、図１２（ｂ）は同実施の形態における充電端子構造および絶縁スイッチの構造を示す詳細図である。図１２において、３２は親機３のクレイドル底部に出没自在に保持されたレバーである。レバー３２は支点３７を中心として回動可能に保持され。レバー３２の先端部３２ａはクレイドルの底部に表出しているている。ここでも、子機側の充電端子２が親機側の充電端子４を押す力の方向と、子機がレバー３２を押す力の方向を変え、子機の荷重方向を分散させている。
【００３８】
３３ａおよび３３ｂは親機３のクレイドル底部に突設されたリブであり、レバー３２の両側であつてレバー３２を挟むように配置されている。人の指がレバー３２を押そうとしても、リブ３３ａ，３３ｂによってレバー３２が押し込まれるのを阻止している。
【００３９】
子機１において、３４はレバー３２を押すための突起部である。突起部３４の幅はリブ３３ａ，３３ｂの間隔よりも狭く、この突起部３４はリブ３３ａとリブ３３ｂの間に入り込み、レバー３２が押し込むことが出来る。
【００４０】
１７は親機３内の回路基板である。３５は充電端子４と導通した金属板である。３６はダブルトーションバネ構造を持ったトーションバネであり、トーションバネ３６はレバー３２を突出方向に付勢するとともに、金属板３５と接触する充電回路側接点としての機能を兼ね備えている。
【００４１】
図１４はトーションバネ３６の構造を示す詳細図である。３６ａは第１のコイル部、３６ｂは第２のコイル部である。３６ｃは接点である。トーションバネ３６は充電回路と電気的に導通接続した状態で保持され、トーションバネ３６の接点３６ｃが金属板３５と接触することにより、充電回路と充電端子４が導通するようになる。
【００４２】
第１のコイル部３６ａにおけるバネ定数は比較的小さく、第１のコイル部３６ａによって生じる力によってレバー３２を突出方向に付勢している。第２のコイル部３６ｂにおけるバネ定数は比較的強く、第２のコイル部３６ｂによって生じる力によって接点３６ｃが金属板３５に押し付けられる。
【００４３】
そして、金属板３５は親機３の充電端子４と導通しており、トーションバネ３６は充電回路５に接続される。このように絶縁スイッチのオン／オフ動作により親機３の充電端子４と充電回路間５を接続、切り離すようにしている。
【００４４】
子機１を親機３のクレイドル１３に収納していない状態では、絶縁スイッチ３２が図１２（ｂ）に示すように親機側のレバー３２は押し込まれること無く、金属板３５と接点３６ｃを離し、オフ状態となる。この時、回路上では充電端子４の表出した部分と電話回線１１は絶縁される。またクレイドル底部に突設されたリブ３３ａ，３３ｂにより、不用意に人がレバー３２を押してしまうことがない。
【００４５】
子機１を親機３のクレイドル１３に収納した状態では、図１３に示すように子機１の突起部３４によりレバー３２を押し、トーションバネ３６の接点３６ｃが金属板３５に接し、絶縁スイッチはがオン状態となり、子機内のバッテリーが充電される。また回路上、親機側の充電端子４の表出金属と電話回線１１とが導通することになるが、この状態では充電端子４を人が触れることは不可能である。
【００４６】
図１５は、固定機に対する移動機の着脱に応じて接点が、同時に開閉する構造を説明する図である。レバー３２ａは、親機３のクレイドル部に出没自在に保持されたレバーであり、子機１を親機３へ装着時、レバー３２ａは子機突起部３４を押し、レバー３２を支点としながら回転する。同時に、ダブルトーションバネ３６ｂをレバー３２が押すことによりダブルトーションバネの接点３６ｃと金属板３５を接触させる構造である。上記一連の運動により金属板ａ（仮に正端子）金属板ｂ（仮に情報端子）金属板ｃ（仮に負端子）が、同時にダブルトーションバネ達と接触する。また、子機１が親機３から取り外される時は、上記記述の逆の運動をする事により、金属板３５のａ、ｂ、ｃが、同時にダブルトーションバネ達から離れる構造である。
【００４７】
【発明の効果】
上記の説明より明らかなように、本発明は固定機における充電端子を電話回線から絶縁するために、移動機の固定機への着脱で作動する絶縁用の絶縁スイッチを設けた通信装置としたため、従来、絶縁するために使用していたトランス、フォトカプラ、リレー、コンデンサ等の絶縁部品が不要となり、コストダウンが可能となり、また、トランス廃止による音質低下の防止、および側音特性の向上が可能となる。またトランスのインピーダンスを考慮した設計が必要でなくなり、電話回線とのインピーダンスのマッチングが容易となり、さらに通話信号が受話器に回り込む側音特性の向上が図れる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態のコードレス電話機の回路構成図
【図２】同実施の形態における充電端子構造および絶縁スイッチを備えたコードレス電話機を示す外観図
【図３】（ａ）同実施の形態における充電端子構造の親機における充電端子を示す図
（ｂ）同実施の形態において親機を図３（ａ）に示した線Ａ−Ａに沿って切断した場合の断面図
（ｃ）同親機を図３（ａ）に示した線Ｂ−Ｂに沿って切断した場合の断面図
【図４】同実施の形態における充電端子構造およぴ絶縁スイッチの構造を示す詳細図
【図５】本発明の第２の実施の形態における充電端子構造および絶縁スイッチを備えたコードレス電話機を示す外観図
【図６】同実施の形態におけるコードレス電話機の充電端子の部分を示す平面図
【図７】（ａ）本発明の第２実施の形態における充電端子構造の移動機側の構造を示す詳細図
（ｂ）同実施の形態における充電端子構造および絶縁スイッチの構造細図
【図８】本発明の実施の形態における絶縁スイッチのトーションバネの構造を示す詳細図
【図９】本発明の第２の実施の形態における絶縁スイッチの構造を示す詳細図
【図１０】本発明の第３の実施の形態における充電端子構造を示す外観図
【図１１】同充電端子構造の親機側の構造を示す平面図
【図１２】（ａ）本発明の第３実施の形態における充電端子構造の移動機側の構造を示す詳細図
（ｂ）同実施の形態における充電端子構造および絶縁スイッチの構造を示す詳細図
【図１３】同実施の形態における充電端子構造およぴ絶縁スイッチの構造を示す詳細図
【図１４】同実施の形態におけるトーションバネの構造を示す詳細図
【図１５】同実施の形態における固定機に対する移動機の着脱において、一対の接点が同時に開閉する構造を示す詳細図
【図１６】従来のコードレス電話機の充電端子絶縁装置の回路構成図
【符号の説明】
１子機
２充電端子
３親機
４充電端子
５充電回路
６回線ネットワーク回路
８電源
９送話回路
１０受話回路
１１電話回線
１２絶縁スイッチ
１３クレイドル
１４板状部
１６板バネ材
１７基板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication device that communicates via a telephone line, and a charging terminal structure and an insulation switch for charging a battery built in a mobile device such as a child device.
[0002]
[Prior art]
In general, a cordless telephone is configured to charge the slave when the slave is installed in the cradle of the master, and to prevent electric shock by insulating the charge terminal of the master and the telephone line when the slave is not attached. It has become. As a means for insulating the exposed portion of the charging terminal in the base unit from the telephone line, insulating parts such as a transformer, a photocoupler, a relay, and a capacitor are used on the circuit board.
[0003]
FIG. 15 shows a circuit configuration mainly including a charging terminal of a conventional communication apparatus. In the figure, reference numeral 1 denotes a slave unit, which has a charging terminal 2 and can be accommodated in a cradle of the master unit 3. 8 is a power source, 9 is a transmitting circuit, 10 is a receiving circuit, and 11 is a telephone line.
[0004]
The base unit 3 includes a charging terminal 4 inside the cradle. When the handset 1 is stored in the cradle, the charging terminals 2 of the handset 1 and the exposed portions of the charging terminal 4 of the base unit 3 are brought into contact with each other. The battery inside the handset 1 is charged.
[0005]
Further, in the base unit 3, in order to prevent an electric shock when a human body touches the charging terminal 4, the secondary side charging circuit 5 and the primary side line network circuit are provided on the circuit board inside the base unit 3. 6 are insulated by insulating parts 7 such as a transformer, a photocoupler, a relay, and a capacitor.
[0006]
[Problems to be solved by the invention]
However, the conventional configuration uses an insulating component 7 such as a transformer, a photocoupler, a relay, and a capacitor in order to prevent an electric shock when the human body touches the charging terminal 4 of the base unit 3. become. Further, when a transformer is used for the insulating component 7, a call loss occurs, sound quality is deteriorated, and impedance matching with the telephone line 11 is difficult due to the impedance of the transformer, and a side sound characteristic of a transmission signal that circulates into the receiver. There was a problem that improvement could not be achieved.
[0007]
In view of the above-described conventional problems, the present invention insulates the charging terminal of the base unit from the telephone line without using an insulating component, thereby reducing the cost, preventing deterioration of sound quality due to the abolition of the transformer, and improving the side sound characteristics. An object of the present invention is to provide a communication device, a charging terminal structure, and an insulation switch.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an insulating switch that operates when a mobile device is mounted instead of an insulating component such as a transformer, a photocoupler, a relay, and a capacitor. Insulate from the line. With this configuration, insulation between the exposed portion of the charging terminal and the telephone line is ensured without using insulating parts such as a transformer, a photocoupler, a relay, and a capacitor.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The first aspect of the present invention comprises a mobile device having a rechargeable battery and a fixed device connected to a telephone line and having a built-in charging circuit for charging the battery. The mobile device is attached to and detached from the fixed device. The mobile device and the stationary device each have a charging terminal that can be contacted with each other, and an insulation switch is provided between the charging terminal of the stationary device and the internal charging circuit. When the mobile unit is not installed, the insulation switch is turned off and the charging terminal of the fixed unit is disconnected from the charging circuit and insulated from the telephone line. When the mobile unit is mounted on the fixed unit, the mobile unit is insulated. A communication device characterized in that a switch is turned on and connected to a charging circuit to be in a charged state. By configuring in this way, insulation of transformers, photocouplers, relays, capacitors, etc. Goods is not required, with the effect that the cost can be reduced.
[0010]
The second aspect of the present invention, Oite the communication device of the first invention, the insulating switch is placed in the cradle of the stationary machine, which was provided with a protrusion for actuating the isolating switch to the mobile device, There is little possibility that the human body inadvertently touches the insulation switch to turn it on.
[0011]
A third aspect of the present invention, Oite the communication apparatus of the first aspect of the invention, the isolating switches, to ensure inter-terminal distance required to insulate the charging circuit connected to the charging terminal telephone line And has the effect of ensuring safety.
[0012]
The fourth aspect of the present invention is that when the mobile terminal is attached to the charging terminal of the stationary machine, a pair of contacts of the positive terminal and the negative terminal are simultaneously connected, and the mobile terminal is not attached. A pair of contacts of the terminal and the negative terminal are disconnected at the same time, and the charging circuit and the primary side and the secondary side of the telephone line are turned ON or OFF, and the safety of electric shock and the like is ensured Have
[0013]
According to a fifth aspect of the present invention, there is provided a charging terminal provided on the bottom surface of the mobile device, a charging terminal provided in a stationary device having a built-in charging circuit for charging a battery in the mobile device, and a contact with the mobile device. And an insulating switch with a lever that can be used, and when the mobile device is not attached to the stationary device, the charging terminal of the stationary device is disconnected from the charging circuit, and the mobile device is attached to the stationary device. The charging terminal and the charging circuit are connected by a lever pushed by the mobile device, and the direction of the force that the mobile device side charging terminal pushes the stationary device side charging terminal and the direction of the force that the mobile device pushes the lever are changed. The charging terminal structure is characterized in that the load direction of the mobile device is distributed, and the line during charging is connected by distributing the load direction of the mobile device in this way, and the line during non-charging is connected. To insulate This is a charging terminal structure, and this configuration uses the limited weight of the handset to fulfill its function, so the handset's own weight can be increased and the mechanism for fixing the handset position can be eliminated. This is effective for simplifying the structure.
[0015]
Hereinafter, a cordless telephone will be specifically described as an example of the communication apparatus of the present invention.
[0016]
(Embodiment 1)
FIG. 1 is a circuit configuration diagram of the cordless telephone according to the present embodiment. In addition, the same code | symbol is provided to the component same as the cordless telephone demonstrated as the said prior art.
[0017]
In FIG. 1, reference numeral 1 denotes a cordless telephone handset (mobile device), and 2 a charging terminal provided in the handset 1. Reference numeral 3 denotes a base unit (fixed machine) of the cordless telephone. In addition to the line network circuit for connecting to the telephone line, the base unit 3 has a built-in charging circuit for charging the battery in the handset 1.
[0018]
Reference numeral 4 denotes a charging terminal provided in the base unit 3. The subunit | mobile_unit 1 can be freely accommodated in the recessed part formed in the main | base station 3, ie, a cradle. Reference numeral 5 is a charging circuit, and 6 is a line network circuit. 8 is a power source, 9 is a transmitting circuit, 10 is a receiving circuit, and 11 is a telephone line.
[0019]
The base unit 3 includes a charging terminal 4 inside the cradle. When the handset 1 is housed in the cradle, the exposed portions of the charging terminal 2 of the handset 1 and the charging terminal 4 of the base unit 3 come into contact with each other. Reference numeral 12 denotes an insulation switch. The insulation switch 12 is provided between the secondary side and the primary side in the base unit 3, here between the charging terminal 4 and the charging circuit 5 of the base unit 3, and a pair corresponding to the positive terminal and the negative terminal of the charging circuit 5, respectively. Contact points 12a and 12b. The insulation switch 12 is actuated when the slave unit 1 is attached to the master unit 3, and the pair of contacts 12a and 12b are opened and closed simultaneously. When the child device 1 is separated from the parent device 3, both the contacts 12 a and 12 b are separated from the charging circuit 5, and both the positive terminal and the negative terminal of the charging circuit 5 are electrically disconnected from the charging terminal 4.
[0020]
The insulation switch 12 is configured as described above, and in order to prevent an electric shock, the insulation switch 12 is recessed from the cabinet of the base unit 3 so as not to touch the human body, that is, close to the charging terminal 4 in the cradle 13 of the base unit 3. In the position.
[0021]
FIG. 2 is an external view showing a cordless telephone provided with a charging terminal structure and an insulation switch in the embodiment of the present invention. In FIG. 2, charging terminal 2 is provided on the bottom surface of handset 1. Reference numeral 1a denotes a protrusion that protrudes from the bottom of the child device 1 and pushes the lever on the parent device side.
[0022]
3B is a cross-sectional view of the parent device 3 cut along the line AA shown in FIG. 3A, and FIG. 3C shows the parent device 3 in FIG. It is sectional drawing at the time of cut | disconnecting along line BB. In FIG.3 (c), the charging terminal 4 provided in the main | base station 3 is made by bending a metal leaf | plate spring material. The charging terminal 4 is biased in a direction in which a tip is exposed inside the cradle and protrudes by a plate-like portion 14 having a spring property. Reference numeral 15 denotes a lever that can be freely moved in and out. A leaf spring material 16 is electrically connected to the charging circuit side.
[0023]
When the handset 1 is not stored in the base unit 3, the lever 15 on the base unit side is not pushed in, and as shown in FIG. 3C, between the charging terminal 4 on the base unit side and the charging circuit. The insulation switch 12 is turned off. At this time, the exposed portion of the charging terminal 4 and the telephone line 11 are insulated on the circuit.
[0024]
As shown in FIG. 4, when the child device 1 is placed on the cradle of the parent device 3, the lever 15 is pushed by the protrusion 1 a of the child device 1, and the lever 15 pushes the leaf spring material 16 to form the plate-like portion 14. Contact. When the leaf spring material 16 and the plate-like portion 14 are in contact with each other, the charging circuit and the charging terminal 4 are conducted, and the insulation switch 12 is turned on. As a result, the charging current from the charging circuit flows to the child device via the leaf spring material 16, the plate-like portion 14, the charging terminal 4 and the charging terminal 2, and the battery in the child device is charged. In addition, on the circuit, the exposed metal of the charging terminal 4 on the base unit side and the telephone line 11 become conductive, but in this state, it is impossible for a person to touch the charging terminal 4.
[0025]
As described above, the charging terminal insulation device of the cordless telephone according to the present embodiment is for insulation that operates by attaching / detaching the slave unit to / from the master unit in order to insulate the exposed portion of the charge terminal in the master unit from the telephone line. By providing this insulation switch, insulation parts such as a transformer, a photocoupler, a relay, and a capacitor that have been conventionally used for insulation become unnecessary, and the cost can be reduced. In addition, it is possible to prevent deterioration in sound quality due to the abolition of the transformer and to improve the side sound characteristics.
[0026]
(Embodiment 2)
FIG. 5 is an external view showing a charging terminal structure according to another embodiment of the present invention, and FIG. 6 is a plan view showing a charging terminal portion of the cordless telephone according to the same embodiment. 5 and 6, charging terminal 2 is provided on the bottom surface of handset 1. The insulation switch provided in the parent device 3 blocks between the charging terminal 4 on the parent device side and the charging circuit when the child device 1 is not housed in the parent device 3.
[0027]
FIG. 7A is a detailed view showing the structure of the mobile terminal side of the charging terminal structure in the same embodiment, and FIG. 7B is a detailed view of the structure of the charging terminal structure and the insulation switch in the same embodiment. In FIG. 7, reference numeral 22 denotes a lever which can be moved freely. The tip 22a of the lever 22 is exposed at the bottom of the cradle. Arrow A indicates the direction of the force by which charging terminal 2 on the handset side pushes charging terminal 4 on the base side. An arrow B indicates the direction of the force with which the slave unit pushes the lever 22. In this way, the direction of the two forces is changed to distribute the load direction of the slave unit.
[0028]
A metal plate 24 is electrically connected to the charging terminal 4. Reference numeral 23 denotes a torsion spring having a double torsion spring structure. The torsion spring 23 urges the lever 22 in the protruding direction and also has a function as a charging circuit side contact that contacts the metal plate 24.
[0029]
FIG. 8 is a detailed view showing the structure of the torsion spring of the insulation switch in the same embodiment. Reference numeral 23a denotes a first coil part, and reference numeral 23b denotes a second coil part. 23c is a contact. The torsion spring 23 is held in a state where it is electrically connected to the charging circuit. When the contact 23c of the torsion spring 23 contacts the metal plate 24, the charging circuit and the charging terminal 4 become conductive.
[0030]
The spring constant in the first coil portion 23a is relatively small, and the lever 22 is urged in the protruding direction by the force generated by the first coil portion 23a. The spring constant in the second coil portion 23 b is relatively strong, and the contact 23 c is pressed against the metal plate 24 by the force generated by the second coil portion 23 b.
[0031]
In addition, the distance between the terminals of the insulation switch 12, that is, the distance between the contact 23c and the metal plate 24 in the off state is 2.5 mm (depending on the standards of each country) to ensure safety. The metal plate 24 is connected to the charging terminal 4 of the parent device 3, the torsion spring 23 is connected to the charging circuit 5, and the charging terminal 4 and the charging circuit 5 of the parent device 3 are connected by the on / off operation of the insulation switch. I'm trying to detach it.
[0032]
In the slave unit 1, reference numeral 1 a is a projection that protrudes from the bottom of the slave unit 1 and pushes the lever 22. In the figure, reference numeral 17 denotes a circuit board in the base unit 3.
[0033]
When the slave unit 1 is not housed in the cradle 13 of the master unit 3, the lever 22 on the master unit side is not pushed in as shown in FIG. It becomes. At this time, the exposed portion of the charging terminal 4 and the telephone line 11 are insulated on the circuit.
[0034]
In a state in which the child device 1 is stored in the cradle 13 of the parent device 3, the lever 22 of the insulation switch 12 is pushed by the protrusion 1a of the child device 1, and the insulation switch 12 is turned on. FIG. 9 shows a state in which the lever 22 is pushed in the insulation switch. When the slave unit 1 is stored in the master unit 3, the projection 1a of the slave unit hits the lever 22, and the lever 22 is pushed in as shown in FIG. Accordingly, the torsion spring 23 performs a circular motion, and the internal contact 23 c contacts the metal plate 24.
[0035]
Thus, the metal plate 24 and the contact 23c contact each other, so that the charging current from the charging circuit flows to the slave unit through the metal plate 24, the contact 23c, the charge terminal 4 and the charge terminal 2, and the battery in the slave unit is charged. . In addition, on the circuit, the exposed metal of the charging terminal 4 on the base unit side and the telephone line 11 become conductive, but in this state, it is impossible for a person to touch the charging terminal 4.
[0036]
(Embodiment 3)
FIG. 10 is an external view showing a charging terminal structure according to another embodiment of the present invention, and FIG. 11 is a plan view showing the structure of the charging terminal structure on the base unit side. 10 and 11, the charging terminal 4 on the parent device side and the charging terminal 2 on the child device side are arranged at the same position as in the previous embodiment. As in the case of the previous embodiment, the insulation switch provided in the base unit 3 blocks between the charging terminal 4 on the base unit side and the charging circuit when the handset 1 is not housed in the base unit 3. .
[0037]
FIG. 12 (a) is a detailed view showing the structure of the mobile terminal side of the charging terminal structure in the third embodiment of the present invention, and FIG. 12 (b) shows the structure of the charging terminal structure and the insulation switch in the same embodiment. FIG. In FIG. 12, reference numeral 32 denotes a lever that can be freely moved in and out of the bottom of the cradle of the base unit 3. The lever 32 is held so as to be rotatable about a fulcrum 37. The tip 32a of the lever 32 is exposed at the bottom of the cradle. Also in this case, the direction of the force by which the charging terminal 2 on the handset side pushes the charging terminal 4 on the base side and the direction of the force by which the handset pushes the lever 32 are changed, thereby distributing the load direction of the handset.
[0038]
Reference numerals 33a and 33b denote ribs protruding from the bottom of the cradle of the base unit 3, and are arranged on both sides of the lever 32 so as to sandwich the lever 32 therebetween. Even if a human finger tries to push the lever 32, the ribs 33 a and 33 b prevent the lever 32 from being pushed.
[0039]
In the handset 1, 34 is a protrusion for pushing the lever 32. The width of the protrusion 34 is narrower than the interval between the ribs 33a and 33b. The protrusion 34 enters between the rib 33a and the rib 33b, and the lever 32 can be pushed in.
[0040]
Reference numeral 17 denotes a circuit board in the base unit 3. A metal plate 35 is electrically connected to the charging terminal 4. Reference numeral 36 denotes a torsion spring having a double torsion spring structure. The torsion spring 36 urges the lever 32 in the projecting direction and has a function as a charging circuit side contact that contacts the metal plate 35.
[0041]
FIG. 14 is a detailed view showing the structure of the torsion spring 36. 36a is a first coil part, and 36b is a second coil part. 36c is a contact. The torsion spring 36 is held in a state where it is electrically connected to the charging circuit. When the contact 36c of the torsion spring 36 contacts the metal plate 35, the charging circuit and the charging terminal 4 become conductive.
[0042]
The spring constant in the first coil portion 36a is relatively small, and the lever 32 is urged in the protruding direction by the force generated by the first coil portion 36a. The spring constant in the second coil portion 36b is relatively strong, and the contact 36c is pressed against the metal plate 35 by the force generated by the second coil portion 36b.
[0043]
The metal plate 35 is electrically connected to the charging terminal 4 of the parent device 3, and the torsion spring 36 is connected to the charging circuit 5. In this way, the charging terminal 4 and the charging circuit 5 of the parent device 3 are connected and disconnected by the on / off operation of the insulation switch.
[0044]
When the slave unit 1 is not housed in the cradle 13 of the master unit 3, the insulation switch 32 does not push the lever 32 on the master unit side as shown in FIG. 12B, and the metal plate 35 and the contact 36c are connected. Release and turn off. At this time, the exposed portion of the charging terminal 4 and the telephone line 11 are insulated on the circuit. Further, the ribs 33a and 33b projecting from the bottom of the cradle prevent a person from inadvertently pushing the lever 32.
[0045]
In the state where the handset 1 is housed in the cradle 13 of the base hand 3, the lever 32 is pushed by the projection 34 of the handset 1, and the contact 36c of the torsion spring 36 is in contact with the metal plate 35 as shown in FIG. Is turned on and the battery in the handset is charged. In addition, on the circuit, the exposed metal of the charging terminal 4 on the base unit side and the telephone line 11 become conductive, but in this state, it is impossible for a person to touch the charging terminal 4.
[0046]
FIG. 15 is a diagram illustrating a structure in which the contacts open and close at the same time when the mobile device is attached to and detached from the fixed device. The lever 32a is a lever that is slidably held in the cradle part of the base unit 3. When the handset 1 is mounted on the base unit 3, the lever 32a rotates while pressing the handset projection 34 and using the lever 32 as a fulcrum. To do. At the same time, when the lever 32 pushes the double torsion spring 36b, the contact point 36c of the double torsion spring and the metal plate 35 are brought into contact with each other. The metal plate a (temporarily a positive terminal), metal plate b (temporarily an information terminal) metal plate c (tentatively a negative terminal) simultaneously contacts the double torsion springs by the above-described series of movements. Further, when the slave unit 1 is detached from the master unit 3, the a, b, and c of the metal plate 35 are separated from the double torsion springs at the same time by performing the reverse movement described above.
[0047]
【The invention's effect】
As apparent from the above description, since for the present invention is to insulate the charging terminal in the fixed machine from the telephone line, was provided with an insulating switch for insulation operating at detachment of the mobile unit of the fixing device communications device, Insulating parts such as transformers, photocouplers, relays, and capacitors that have been used to insulate them are no longer necessary, reducing costs, preventing the deterioration of sound quality due to the abolition of transformers, and improving the side-tone characteristics. It becomes. In addition, the design considering the impedance of the transformer is not required, the impedance matching with the telephone line is facilitated, and the side-tone characteristics in which the call signal goes around the receiver can be improved.
[Brief description of the drawings]
FIG. 1 is a circuit configuration diagram of a cordless telephone according to a first embodiment of the present invention. FIG. 2 is an external view showing a cordless telephone provided with a charging terminal structure and an insulation switch according to the first embodiment. ) FIG. 5B is a diagram showing a charging terminal in the base unit having the charging terminal structure according to the embodiment. FIG. 3B is a cross-sectional view when the base unit is cut along line AA shown in FIG. (C) Sectional view when the parent device is cut along line BB shown in FIG. 3 (a). FIG. 4 shows details of the charging terminal structure and the insulating switch structure in the same embodiment. FIG. 5 is an external view showing a cordless telephone provided with a charging terminal structure and an insulation switch in a second embodiment of the present invention. FIG. 6 is a plan view showing a charging terminal portion of the cordless telephone in the same embodiment. FIG. 7 (a) Second of the present invention FIG. 8B is a detailed view showing the structure of the mobile terminal side of the charging terminal structure in the embodiment. FIG. 8 is a structural detailed view of the charging terminal structure and the insulating switch in the embodiment. FIG. 9 is a detailed view showing the structure of the insulation switch in the second embodiment of the present invention. FIG. 10 is an external view showing the charge terminal structure in the third embodiment of the present invention. FIG. 11 is a plan view showing the structure on the base side of the charging terminal structure. FIG. 12 (a) is a detailed view showing the structure on the mobile unit side of the charging terminal structure in the third embodiment of the present invention. FIG. 13 is a detailed view showing the structure of the charging terminal structure and the insulating switch in the embodiment. FIG. 13 is a detailed view showing the structure of the charging terminal structure and the insulating switch in the embodiment. FIG. 15 is a detailed view showing a structure in which a pair of contacts are simultaneously opened and closed when the mobile device is attached to and detached from the fixed device in the embodiment. FIG. 16 is a conventional cordless telephone charging terminal insulation device. Circuit configuration diagram [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sub-unit 2 Charging terminal 3 Main unit 4 Charging terminal 5 Charging circuit 6 Line network circuit 8 Power source 9 Transmission circuit 10 Reception circuit 11 Telephone line 12 Insulation switch 13 Cradle 14 Plate-like part 16 Leaf spring material 17 Substrate

Claims

A mobile device having a rechargeable battery and a fixed device connected to a telephone line and having a built-in charging circuit for charging the battery, the communication device configured to attach and detach the mobile device to and from the fixed device, Each of the mobile device and the stationary device has a charging terminal that can contact each other, an insulation switch is provided between the charging terminal of the stationary device and an internal charging circuit, and the mobile device is mounted on the stationary device. When not in use, the insulation switch is turned off to separate the charging terminal of the fixed machine from the charging circuit to insulate it from the telephone line. When the mobile device is attached to the fixed machine, the mobile device is charged with the insulation switch turned on. A communication device which is connected to a circuit to be in a charged state.

2. The communication according to claim 1, wherein the fixing device includes a concave portion for accommodating the mobile device, the lever of the insulation switch is exposed in the concave portion, and the convex portion for pressing the lever of the insulation switch is provided on the mobile device. apparatus.

2. The communication device according to claim 1, wherein the insulation switch secures a distance between terminals necessary to insulate the charging terminal and the charging circuit connected to the telephone line.

2. The communication according to claim 1, wherein the insulation switch includes a pair of contacts corresponding to the positive terminal and the negative terminal of the charging circuit, respectively, and the pair of contacts opens and closes simultaneously when the mobile device is attached to and detached from the fixed machine. apparatus.

A mobile device having a rechargeable battery and a fixed device connected to a telephone line and having a built-in charging circuit for charging the battery, the communication device configured to attach and detach the mobile device to and from the fixed device, The mobile device and the stationary device each have a charging terminal that can contact each other. When the mobile device is not attached to the stationary device, the charging terminal of the stationary device is disconnected from the charging circuit and moved relative to the stationary device. A communication device, wherein the charging terminal and the charging circuit are connected by a lever pressed by the mobile device when the machine is mounted.

A charging terminal provided on the bottom surface of the mobile device, a charging terminal provided in a stationary device having a built-in charging circuit for charging a battery in the mobile device, and an insulation switch having a lever capable of contacting the mobile device; And when the mobile device is not attached to the stationary device, the charging terminal of the stationary device is disconnected from the charging circuit, and when the mobile device is attached to the stationary device, the mobile device is pushed by the mobile device. The charging terminal and the charging circuit are connected by a lever, and the load direction of the mobile device is dispersed by changing the direction of the force by which the mobile device side charging terminal presses the stationary device side charging terminal and the direction of the force by which the mobile device presses the lever. A charging terminal structure characterized by being configured as described above.

The insulation switch includes a spring having a structure including a first portion having a relatively small spring constant and a second portion having a relatively strong spring constant, and a lever that is pushed by a mobile unit to displace the spring. 7. The charging terminal according to claim 6, wherein the lever is urged in a protruding direction by a force generated by the first portion, and the contact on the charging terminal side is pressed against the contact on the charging circuit side by the force generated by the second portion. Construction.

A mobile device having a rechargeable battery and a fixed device connected to a telephone line and having a built-in charging circuit for charging the battery, the communication device configured to attach and detach the mobile device to and from the fixed device, Each of the mobile device and the stationary device has a charging terminal that can contact each other, and an insulation switch is provided between the charging terminal of the stationary device and the internal charging circuit, and the insulation switch has a first spring constant that is relatively small. And a spring having a structure having a second portion having a relatively strong spring constant, and a lever that is pushed by a mobile device to displace the spring, and the mobile device is mounted on the stationary device. When there is not, the lever is urged in the protruding direction by the force generated by the first part, the contact on the charging terminal side is separated from the contact on the charging circuit side, and the movement is performed when the mobile device is mounted on the fixed machine. Communication device but pushes the lever, and wherein the pressing contact of the charging terminal side by the force caused by the second portion of the spring contact of the charging circuit side.

A lever that can be freely moved in and out of the stationary machine with a built-in charging circuit for charging a battery in the mobile device, a first contact connected to the charging circuit, a first portion and a spring having a relatively small spring constant A double torsion spring structure including a second portion having a relatively strong constant, and a spring having a function as a second contact for urging the lever in the projecting direction and contacting the first contact; The spring is electrically connected to a charging terminal provided on the fixed machine side, and when the mobile machine is not mounted on the fixed machine, the lever on the fixed machine side is not pushed in, and the first contact and the second contact are connected. The charging circuit and the charging terminal are separated from each other, and when the mobile device is mounted on the stationary machine, the lever is pushed in, the spring is displaced, and the first contact and the second contact come into contact with each other. Between the battery and the charging terminal Insulation switch to butterflies.