JP3843936B2

JP3843936B2 - Disaster prevention detector for home

Info

Publication number: JP3843936B2
Application number: JP2002340214A
Authority: JP
Inventors: 秀晃高橋
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2006-11-08
Anticipated expiration: 2022-11-25
Also published as: JP2004178026A

Description

【０００１】
【発明の属する技術分野】
本発明は、電源コードが導出された本体ボディと、この本体ボディを取り付け固定するための取付ベースと、を備え、同電源コードの余長部分が取付ベースと本体ボディとの間隔部分に巻き取り収容される住宅用防災感知器に関するものである。
【０００２】
【従来の技術】
従来から、図５に示す如く、本体ボディ４とこの本体ボディ４を建物内の設置面５に取り付け固定するための取付ベース６とを備え、本体ボディ４の裏面中程に係合軸体７を突設し、取付ベース６の表面の同係合軸体７と対応する位置に係合受け部８を形成し、この係合受け部８に前記係合軸体７の先端部分を挿入係止することによって、同本体ボディ４が取付ベース６に取着一体化される住宅用防災感知器は知られている（特開平１０−１０５８４９号公報〔図３〕参照）。
【０００３】
この住宅用防災感知器は、台所等のガス漏れを検知すると警報（有電圧信号）を出力するガス漏れ警報器であり、前記本体ボディ４、取付ベース６の他、電源コードを備えている。この場合、本体ボディ４には感知部、電源回路、警報手段等が内蔵され、電源コードは、その一端が同電源回路に接続され、他端には給電部（住宅用の交流１００Ｖ電源ラインのコンセント）に差し込むためのプラグが接続されている。
【０００４】
又、本体ボディ４に突設される係合軸体７は一対の起立片16でなり、両起立片16の先端部分に外方へ折曲した係合爪部17が形成されている。他方、取付ベース６に形成される係合受け部８は一対のスリット23でなり、両スリット23に前記係合爪部17と対応する挿入口部24が形成されている。そして、係合爪部17を挿入口部24から挿入して本体ボディ４を回動させると、起立片16はスリット23に抜け外れないよう係止され、これにより、係合受け部８に係合軸体７の先端部分が挿入係止されて、同本体ボディ４は取付ベース６に取着一体化される。すなわち、係合軸体７を係合受け部８に対し、所謂、ツイストロック方式で挿入係止させることにより、本体ボディ４が取付ベース６に取着一体化されるものである。
【０００５】
又、取付ベース６には位置決め用孔20と位置調整用孔21とが配設形成されており、この位置決め用孔20及び位置調整用孔21に挿通されるネジ22によって、同取付ベース６は設置面５となる壁面に取り付け固定される。取付ベース６が設置面５に取り付け固定された状態で、前記の如く、本体ボディ４は同取付ベース６に取着一体化される。そして、本体ボディ４から導出された電源コードが、係合軸体７の回りに巻き取られて取付ベース６と同本体ボディ４との間隔部分に収容されるものである。
【０００６】
この場合、本体ボディ４に突設される起立片16の突出高さを、取付ベース６の肉厚よりも十分に大きくすることで、この本体ボディ４を同取付ベース６に取り付けると両者の間には間隔が形成され、この間隔部分に電源コードの余長部分を巻き取り収容することができるものである。したがって、この住宅用防災感知器では、本体ボディ４を取付ベース６を介して設置面５に対し簡単に取り付け固定することができ、電源コードの余長部分も外観良く隠し納められる。
【０００７】
【特許文献１】
特開平１０−１０５８４９号公報
【０００８】
【発明が解決しようとする課題】
しかしながら、上記従来の技術にあっては、本体ボディ４を取付ベース６に取着一体化させた後でないと、この両者の間に電源コードを巻き取り収容することができないものであり、同電源コードの巻き取り収容作業は困難で安全性にも問題を生じるものであった。すなわち、本体ボディ４に突設された係合軸体７の外周に電源コードを巻き付けると、この巻き付いた電源コードが邪魔になって、同係合軸体７を取付ベース６の係合受け部８に挿入係止し難くなってしまうものであった。
【０００９】
そのため、本体ボディ４を取付ベース６に取着一体化させた後に、この両者の間に電源コードを巻き取り収容することになり、この場合、同両者間に形成された間隔部分に外側から電源コードの余長部分を差し込むように収容して巻き取らなければならず、この巻き取り収容作業が困難で、特に、高所作業となるときには安全性にも問題を生じるものであった。又、係合軸体７の外周に巻き付いた電源コードは絡み易く、同係合軸体７を係合受け部８から抜き外して本体ボディ４を取付ベース６から取り外す際に、同絡んだ電源コードが支障となって取り外し難くなるという問題もあった。
【００１０】
本発明は、上記従来の技術における問題を悉く解決するために発明されたもので、その課題は、電源コードの余長部分が外観良く納められ、この電源コードの余長部分を巻き取り収容する作業は簡単且つ安全で、同電源コードの絡みが防止されて、本体ボディを取付ベースから取り外す作業も簡単となる住宅用防災感知器を提供することである。
【００１１】
【課題を解決するための手段】
本発明の請求項１記載の住宅用防災感知器は、感知部と電源回路とを内蔵し、同電源回路に接続される電源コードが導出された本体ボディと、この本体ボディを建物内の設置面に取り付け固定するための取付ベースと、を備え、本体ボディの裏面中程に係合軸体を突設し、取付ベースの表面の同係合軸体と対応する位置に係合受け部を形成して、この係合受け部に前記係合軸体の先端部分を挿入係止することで、同本体ボディが取付ベースに取着一体化される住宅用防災感知器において、本体ボディから導出された電源コードが、係合軸体の回りに巻き取られて取付ベースと同本体ボディとの間隔部分に収容される住宅用防災感知器であって、電源コードが係合軸体に巻き付き絡まないよう本体ボディの裏面に沿って巻き取られるように、この電源コードを保持する保持手段を同本体ボディに設けてなる。
【００１２】
したがって、この場合、電源コードが係合軸体に巻き付き絡まないよう本体ボディの裏面に沿って巻き取られるように、この電源コードを保持する保持手段を同本体ボディに設けているので、この保持手段によって同電源コードの余長部分を保持させ、同本体ボディの係合軸体の回りに予め巻き取っておいて、取付ベースに同本体ボディを取着一体化することで、両者の間に形成される間隔部分に収容させることができる。
【００１３】
それ故、電源コードの余長部分が取付ベースと本体ボディとの間隔部分に外観良く納められ、この電源コードの余長部分を巻き取り収容する作業は、同本体ボディを取付ベースに取着一体化させる前に予めこの本体ボディ側で行うことができて、簡単且つ安全となる。しかも、電源コードの余長部分は係合軸体に巻き付き絡まないよう本体ボディの裏面に沿って巻き取られるので、この本体ボディを取付ベースから支障なく簡単に取り外すことができる。
【００１４】
又、本発明の請求項１記載の住宅用防災感知器は、本体ボディの裏面中程で係合軸体の近傍位置から電源コードを導出させたことを特徴とする。
【００１５】
したがって、この場合は特に、電源コードの導出位置が本体ボディの裏面中程で係合軸体の近傍となるので、この本体ボディの裏面中程から導出された同電源コードは外周側へとスムーズに巻き取られて保持手段で保持される。
【００１８】
又、本発明の請求項１記載の住宅用防災感知器は、本体ボディの裏面周縁部分に凹欠状段部を形成し、この凹欠状段部が電源コードの巻き取り最終部位を同裏面周縁部分に嵌合保持する保持手段となることを特徴とする。
【００１９】
したがって、この場合は特に、本体ボディの裏面周縁部分に凹欠状段部でなる保持手段が形成されるので、同本体ボディの裏面中程から導出された電源コードの巻き取り最終部位は同裏面周縁部分の保持手段で嵌合保持され、この電源コードの余長部分となる巻き取り長さを適切に設定して、この巻き取り長さを確実に保持することにより、同電源コードのその他の部分における配線の弛みを防止することができる。
【００２０】
本発明の請求項２記載の住宅用防災感知器は、上記請求項１記載の住宅用防災感知器において、本体ボディの裏面周縁部分に周方向で略等間隔に複数の凹欠状段部を配置形成して保持手段を配設したことを特徴とする。
【００２１】
したがって、この場合は特に、本体ボディの裏面周縁部分に周方向で略等間隔に保持手段となる凹欠状段部が複数配置形成されるので、複数の同凹欠状段部から一つを選択してこれに電源コードの巻き取り最終部位を嵌合保持させることにより、同電源コードの巻き取り長さはより広範囲で適切に設定され、この電源コードの同本体ボディから外側方へ突出されて配線される配線突出方向の変更にも容易に対応することができる。
【００２２】
本発明の請求項３記載の住宅用防災感知器は、上記請求項１〜２のいずれか一つに記載の住宅用防災感知器において、本体ボディの裏面をその周辺側程が取付ベースから離れるように傾斜させて形成したことを特徴とする。
【００２３】
したがって、この場合は特に、本体ボディの裏面がその周辺側程取付ベースから離れるように傾斜されて形成されるので、電源コードは同本体ボディの裏面でその周辺側へとスムーズに巻き取られ、同電源コードの余長部分を巻き取り収容する作業がより簡単となる。
【００２４】
【発明の実施の形態】
図１〜４は、本発明の請求項１〜３全てに対応した一実施形態である住宅用防災感知器を示している。この実施形態の住宅用防災感知器は、感知部１と電源回路２とを内蔵し、同電源回路２に接続される電源コード３が導出された本体ボディ４と、この本体ボディ４を建物内の設置面５に取り付け固定するための取付ベース６と、を備えている。そして、本体ボディ４の裏面中程に係合軸体７を突設し、取付ベース６の表面の同係合軸体７と対応する位置に係合受け部８を形成しており、この係合受け部８に前記係合軸体７の先端部分を挿入係止することによって、同本体ボディ４が取付ベース６に取着一体化される。
【００２５】
更に、この実施形態の住宅用防災感知器では、本体ボディ４から導出された電源コード３が、係合軸体７の回りに巻き取られて取付ベース６と同本体ボディ４との間隔部分に収容される。ここで、電源コード３が係合軸体７に巻き付き絡まないよう本体ボディ４の裏面に沿って巻き取られるように、この電源コード３を保持する保持手段Ａ、Ｂを同本体ボディ４に設けており、又、この本体ボディ４の裏面中程で係合軸体７の近傍位置から同電源コード３を導出（導出部位3b）させてもいる。
【００２６】
又、この実施形態の住宅用防災感知器では、本体ボディ４の裏面に係合軸体７を中心とする渦巻き状のガイド溝９を形成して、このガイド溝９が電源コード３の巻き取り部位を同裏面に係合保持する保持手段Ａとなる。又、本体ボディ４の裏面周縁部分に凹欠状段部10を形成して、この凹欠状段部10が電源コード３の巻き取り最終部位3cを同裏面周縁部分に嵌合保持する保持手段Ｂとなる。この場合に、本体ボディ４の裏面周縁部分に周方向で略等間隔に複数の凹欠状段部10を配置形成して保持手段Ｂを配設しており、更に、同本体ボディ４の裏面をその周辺側程が取付ベース６から離れるように傾斜させて形成してもいる。
【００２７】
以下、この実施形態の住宅用防災感知器を、より具体的に説明する。この住宅用防災感知器は住宅用の火災警報器であり、感知部１にて煙や熱等が検知されると、警報（有電圧信号）を発する（出力する）ものである。なお、住宅用防災感知器としては、火災警報器の他、ガス漏れ警報器や検知機能のみを有して他の報知機器へと検知信号を送信するものであってもよい。そして、この住宅用防災感知器では、本体ボディ４、取付ベース６、電源コード３等を備えている。
【００２８】
本体ボディ４は略円盤状の中空ケース状で合成樹脂や金属等でなり、略器形状の裏カバー部材4aと表カバー部材4bとを分割可能に結合して形成される。裏カバー部材4aと表カバー部材4bとは、その周縁部分で相互に係止結合されて嵌着一体化され、中空ケース状の本体ボディ４となる。そして、本体ボディ４の中空内部には、プリント基板11、これに搭載される電源回路２や感知部１、ブザー或いはベル等の警報手段12、スイッチ14が収容設置されている。
【００２９】
ここでは、感知部１が火災の際に発生する煙を検知するもので、投光素子、投光レンズ、受光素子、ラビリンス等を内蔵した光学台を用いたものである。感知部１としては、光学台を用いた煙検知式のもの以外で、半導体を用いた熱検知式のものであってもよく、又、ガスの存在を検知するものであってもよい。感知部１での検知結果は、検知信号として警報手段12へと送信され、この警報手段12にてブザーやベル等で報知され、火災発生警報が発せられる。
【００３０】
感知部１は本体ボディ４の表カバー部材4bの略中央で、下方へ突出するように収容され、その周囲は防虫網等が設けられて開放されている。表カバー部材4bの感知部１の側方にはスイッチ14が設けられ、このスイッチ14の反対側には複数のスリット状の孔13が穿設されており、この複数の孔13は前記警報手段12と対応する位置に配設形成されて、この警報手段12による発生音が同複数の孔13を通じて外部に報知され易いようになっている。なお、前記スイッチ14は、通常の監視状態では動作チェックを行う際に操作され、火災警報状態では一定時間の警報停止を行う際に操作される。
【００３１】
そして、前記電源回路２には電源コード３の一端3aが接続され、この電源コード３の他端には給電部（住宅用の交流１００Ｖ電源ラインのコンセント）に差し込むためのプラグ15が接続されている。電源コード３は本体ボディ４の裏カバー部材4aの中程で、係合軸体７の近傍位置から同本体ボディ４の外部へと導出されている。この電源コード３の導出部位3bを始点として渦巻き状に回り拡開するように、ガイド溝９が本体ボディ４の裏カバー部材4aの裏面に形成され、同ガイド溝９は同電源コード３の巻き取り部位を係合保持する保持手段Ａとなる。
【００３２】
この場合、図４（ａ）に示す如く、保持手段Ａとなるガイド溝９は角溝で、断面略矩形状の電源コード３が係合保持される。又、電源コード３はガイド溝９の外側最終端の手前の適所でこのガイド溝９から離脱され、この離脱個所が同電源コード３の巻き取り最終部位3cとして保持手段Ｂで嵌合保持される。保持手段Ｂは本体ボディ４の裏カバー部材4aの周縁部分に略等間隔にして配設形成される四つの凹欠状段部10でなり、選択される一つの凹欠状段部10に電源コード３の巻き取り最終部位3cが嵌合保持される。
【００３３】
この場合、図４（ｂ）に示す如く、保持手段Ｂとなる各凹欠状段部10は角型開口として形成され、その開口縁に両側で対向する凸起25が形成されていて、両凸起25によって同凹欠状段部10内に差し込まれた電源コード３は抜け外れないよう嵌合保持される。この保持手段Ｂとなる各凹欠状段部10や前記保持手段Ａとなるガイド溝９は、本体ボディ４の裏カバー部材4aと一体に形成されており、同保持手段Ａ及び保持手段Ｂに電源コード３を保持させた状態で、この本体ボディ４が取付ベース６に取着一体化される。
【００３４】
又、本体ボディ４に突設される係合軸体７は一対の起立片16でなり、同本体ボディ４の裏カバー部材4aの裏面中程で一体に突出形成され、両起立片16の先端部分に内方へ折曲した係合爪部17が形成されている。他方、取付ベース６に形成される係合受け部８は一対のスリット23でなり、両スリット23に前記係合爪部17と対応する挿入口部24が形成されている。係合軸体７となる両起立片16及び係合受け部８となる両スリット23は、いずれも同一径の円弧軌道上に配設され、両者は相互に係合された状態で回動される。
【００３５】
そして、係合爪部17を挿入口部24から挿入して本体ボディ４を係合軸体７と共に回動させると、この係合軸体７となる起立片16は係合受け部８となるスリット23に抜け外れないよう係止される。これにより、係合受け部８に係合軸体７の先端部分が挿入係止されて、本体ボディ４は取付ベース６に取着一体化される。すなわち、係合軸体７を係合受け部８に対し、所謂、ツイストロック方式で挿入係止させることによって、本体ボディ４は取付ベース６に取着一体化される。
【００３６】
又、取付ベース６は裏側に開口した略円形の偏平器形状に形成され、底板部18と周壁部19とでなり、合成樹脂や金属等で一体に形成されたものである。取付ベース６の底板部18には、前記両スリット23でなる係合受け部８の他、位置決め用孔20と位置調整用孔21とが配設形成されており、この位置決め用孔20及び位置調整用孔21に挿通されるネジ22によって、同取付ベース６は建物内で設置面５となる天井面に取り付け固定される。
【００３７】
そして、取付ベース６が設置面５となる高所の天井面に取り付け固定された状態で、前記の如く、本体ボディ４は同取付ベース６に取着一体化される。その際に、本体ボディ４には、予め、電源コード３が係合軸体７の回りでこれに巻き付き絡まないよう同本体ボディ４の裏面に沿って巻き取られており、この状態は保持手段Ａと保持手段Ｂとで保持されている。又、この場合、本体ボディ４に突設された係合軸体７となる起立片16の突出高さが取付ベース６の係合受け部８における肉厚よりも十分に大きく形成されており、そのため、この本体ボディ４を同取付ベース６に取り付けると両者の間には間隔が形成され、この間隔部分に電源コード３の余長部分は巻き取り収容されることとなる。
【００３８】
したがって、この実施形態の住宅用防災感知器においては、電源コード３が係合軸体７に巻き付き絡まないよう本体ボディ４の裏面に沿って巻き取られるように、この電源コード３を保持する保持手段Ａ、Ｂを同本体ボディ４に設けているので、この保持手段Ａ、Ｂによって同電源コード３の余長部分を保持させ、同本体ボディ４の係合軸体７の回りに予め巻き取っておいて、取付ベース６に同本体ボディ４を取着一体化することで、両者の間に形成される間隔部分にここからはみ出さないよう確実に収容させることができる。
【００３９】
それ故に、電源コード３の余長部分が取付ベース６と本体ボディ４との間隔部分に外観良く納められ、この電源コード３の余長部分を巻き取り収容させる作業は、同本体ボディ４を取付ベース６に取着一体化させる前に、予め、この本体ボディ４側で低所作業として行うことができ、簡単且つ安全となる。しかも、電源コード３の余長部分は係合軸体７に巻き付き絡まないよう本体ボディ４の裏面に沿って巻き取られるので、この巻き取られた電源コード３は巻き重なることなく前記間隔部分でコンパクトに納まり、同本体ボディ４を取付ベース６から支障なく簡単に取り外すこともできる。
【００４０】
又、この実施形態の住宅用防災感知器においては、電源コード３の導出位置3bが本体ボディ４の裏面中程で係合軸体７の近傍となるので、この本体ボディ４の裏面中程から導出された同電源コード３は外周側へとスムーズに巻き取られて保持手段Ａ更には保持手段Ｂで保持される。又、この場合、本体ボディ４の裏面に係合軸体７を中心とする渦巻き状のガイド溝９でなる保持手段Ａが形成されるので、同本体ボディ４の裏面中程から導出された電源コード３は同保持手段Ａで係合保持され、この電源コード３の巻き取り部位を所定経路に沿って確実に巻き取り保持させることができる。
【００４１】
しかも、本体ボディ４の裏面周縁部分に凹欠状段部10でなる保持手段Ｂが形成されるので、同本体ボディ４の裏面中程から導出された電源コード３の巻き取り最終部位3cは同裏面周縁部分の保持手段Ｂで嵌合保持され、この電源コード３の余長部分となる巻き取り長さを適切に設定して、この巻き取り長さを確実に保持することにより、同電源コード３の巻き取り部位の前記間隔部分からのはみ出しが確実に防止され、同電源コード３のその他の部分における配線の弛みも防止される。ここで、設置面５となる天井面では、電源コード３が弛まないように留め具26で保持固定されている。
【００４２】
更に、この場合、本体ボディ４の裏面周縁部分に周方向で略等間隔に保持手段Ｂとなる凹欠状段部10が複数配置形成されるので、複数の同凹欠状段部10から一つを選択してこれに電源コード３の巻き取り最終部位3cを嵌合保持させることにより、同電源コード３の巻き取り長さはより広範囲で適切に設定され、この電源コード３の同本体ボディ４から外側方へ突出されて配線される配線突出方向の変更にも容易に対応することができる。
【００４３】
又、この実施形態の住宅用防災感知器においては、本体ボディ４の裏面となる裏カバー部材4aの上面が、その周辺側程取付ベース６から離れるように外下方へ傾斜されて形成されるので、電源コード３は同本体ボディ４の裏面でその周辺側外方へとスムーズに巻き取られ易くなり、同電源コード３の余長部分を巻き取り収容する作業がより簡単となる。
【００４４】
なお、本発明の住宅用防災感知器における係合軸体７及び係合受け部８は、上記実施形態のように回動係止される形態のものに限られず、例えば、係合軸体７の先端部分が係合受け部８に挿入されるだけで嵌合係止されるような形態のものであってもよい。又、本発明の住宅用防災感知器は、天井面の他、壁面、床面等を設置面５として、この設置面５に取り付け固定されてもよい。
【００４５】
【発明の効果】
上述の如く、本発明の請求項１記載の住宅用防災感知器においては、電源コードの余長部分が取付ベースと本体ボディとの間隔部分に外観良く納められ、この電源コードの余長部分を巻き取り収容する作業は、同本体ボディ側で予め行うことができて簡単且つ安全であり、この本体ボディを同取付ベースから支障なく簡単に取り外すこともできる。
【００４６】
又、本発明の請求項１記載の住宅用防災感知器においては、特に、本体ボディの裏面中程の係合軸体の近傍位置から導出された電源コードが、同裏面で外周側へとスムーズに巻き取られて保持手段で保持される。
【００４８】
又、本発明の請求項１記載の住宅用防災感知器においては、特に、電源コードの巻き取り最終部位を凹欠状段部でなる保持手段で嵌合保持させ、この電源コードの余長部分となる巻き取り長さを適切に設定して確実に保持させることによって、同電源コードの配線のその他の部分での弛みを防止することができる。
【００４９】
又、本発明の請求項２記載の住宅用防災感知器においては、特に、選択される一つの凹欠状段部に電源コードの巻き取り最終部位を嵌合保持させることによって、同電源コードの巻き取り長さはより広範囲で適切に設定され、この電源コードの配線突出方向の変更にも容易に対応することができる。
【００５０】
又、本発明の請求項３記載の住宅用防災感知器においては、特に、本体ボディの裏面が傾斜していることによって、電源コードは同本体ボディの裏面でその周辺側へとスムーズに巻き取られ、同電源コードの余長部分を巻き取り収容する作業がより簡単となる。
【図面の簡単な説明】
【図１】本発明の一実施形態である住宅用防災感知器の取付状態を示す断面図。
【図２】同住宅用防災感知器の分解状態を示す斜視図。
【図３】同住宅用防災感知器の取付状態における外観を示す斜視図。
【図４】同住宅用防災感知器の保持手段における電源コードの保持状態を示し、（ａ）はガイド溝でなる保持手段Ａでの保持状態を示す断面図、（ｂ）は凹欠状段部でなる保持手段Ｂでの保持状態を示す断面図。
【図５】従来例である住宅用防災感知器を示し、（ａ）はその分解状態を示す斜視図、（ｂ）はその取付状態を示す断面図。
【符号の説明】
１感知部
２電源回路
３電源コード
４本体ボディ
５設置面
６取付ベース
７係合軸体
８係合受け部
９ガイド溝
10 凹欠状段部
Ａ保持手段
Ｂ保持手段[0001]
BACKGROUND OF THE INVENTION
The present invention includes a main body from which a power cord is derived, and a mounting base for mounting and fixing the main body, and the extra length of the power cord is wound around a space between the mounting base and the main body. The present invention relates to housed disaster prevention sensors.
[0002]
[Prior art]
Conventionally, as shown in FIG. 5, a main body 4 and an attachment base 6 for attaching and fixing the main body 4 to an installation surface 5 in the building are provided. And an engagement receiving portion 8 is formed at a position corresponding to the engaging shaft body 7 on the surface of the mounting base 6, and the distal end portion of the engaging shaft body 7 is inserted into the engagement receiving portion 8. A housing disaster prevention sensor in which the main body 4 is attached to and integrated with the mounting base 6 by stopping is known (see Japanese Patent Laid-Open No. 10-105849 [FIG. 3]).
[0003]
This residential disaster detector is a gas leak alarm that outputs an alarm (voltage signal) when a gas leak in a kitchen or the like is detected, and includes a power cord in addition to the main body 4 and the mounting base 6. In this case, the main body 4 includes a sensing unit, a power supply circuit, an alarm means, etc., and one end of the power cord is connected to the power supply circuit, and the other end is connected to a power feeding unit (a residential AC 100V power line). A plug for plugging into an outlet is connected.
[0004]
Further, the engaging shaft body 7 projecting from the main body 4 is composed of a pair of upstanding pieces 16, and an engaging claw portion 17 bent outward is formed at the distal end portions of the upstanding pieces 16. On the other hand, the engagement receiving portion 8 formed on the mounting base 6 is composed of a pair of slits 23, and an insertion port portion 24 corresponding to the engagement claw portion 17 is formed in both slits 23. Then, when the engaging claw portion 17 is inserted from the insertion port portion 24 and the main body 4 is rotated, the upright piece 16 is locked so as not to come off in the slit 23, thereby engaging the engaging receiving portion 8. The front end portion of the coaxial body 7 is inserted and locked, and the main body 4 is integrally attached to the mounting base 6. That is, the main body 4 is attached and integrated to the mounting base 6 by inserting and locking the engagement shaft body 7 to the engagement receiving portion 8 by a so-called twist lock method.
[0005]
The mounting base 6 is provided with a positioning hole 20 and a position adjusting hole 21, and the mounting base 6 is formed by screws 22 inserted into the positioning hole 20 and the position adjusting hole 21. It is attached and fixed to the wall surface that becomes the installation surface 5. As described above, the main body 4 is attached to and integrated with the mounting base 6 in a state where the mounting base 6 is fixed to the installation surface 5. Then, the power cord led out from the main body 4 is wound around the engaging shaft body 7 and accommodated in the space between the mounting base 6 and the main body 4.
[0006]
In this case, when the protruding height of the upright piece 16 protruding from the main body 4 is made sufficiently larger than the thickness of the mounting base 6, A space is formed in the space, and an extra length portion of the power cord can be wound and accommodated in the space portion. Therefore, in this disaster prevention sensor for homes, the main body 4 can be easily attached and fixed to the installation surface 5 via the attachment base 6, and the extra length portion of the power cord is concealed with a good appearance.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-105849
[Problems to be solved by the invention]
However, in the above prior art, the power cord cannot be wound and accommodated between the main body 4 and the mounting base 6 after the main body 4 is attached and integrated. The work of winding and storing the cords was difficult and caused a safety problem. That is, when the power cord is wound around the outer periphery of the engagement shaft body 7 projecting from the main body 4, the wound power cord becomes an obstacle, and the engagement shaft body 7 is connected to the engagement receiving portion of the mounting base 6. 8 would be difficult to insert and lock.
[0009]
Therefore, after the main body 4 is attached and integrated with the mounting base 6, the power cord is wound and accommodated between the two, and in this case, the power is supplied from the outside to the space formed between the two. The extra length portion of the cord has to be accommodated and wound up, and this take-up / accommodating operation is difficult, especially when working at a high place. Further, the power cord wound around the outer periphery of the engagement shaft body 7 is easily entangled, and when the main body 4 is removed from the mounting base 6 by removing the engagement shaft body 7 from the engagement receiving portion 8, the power source There was also a problem that it was difficult to remove the cord due to the trouble.
[0010]
The present invention was invented in order to solve the above-described problems in the prior art, and the problem is that the extra length of the power cord is stored in a good appearance, and the extra length of the power cord is taken up and accommodated. It is an object of the present invention to provide a residential disaster prevention sensor that is simple and safe, prevents the power cord from being entangled, and makes it easy to remove the main body from the mounting base.
[0011]
[Means for Solving the Problems]
A disaster prevention sensor for a house according to claim 1 of the present invention includes a main body with a built-in sensing unit and a power circuit, and a power cord connected to the power circuit, and the main body is installed in a building. A mounting base for mounting and fixing to the surface, and projecting an engagement shaft in the middle of the back surface of the main body, and an engagement receiving portion at a position corresponding to the engagement shaft on the surface of the mounting base. In the housing disaster prevention sensor, the body body is attached and integrated with the mounting base by inserting and locking the distal end portion of the engagement shaft body to the engagement receiving portion, and is derived from the body body. The housed power cord is wound around the engaging shaft body and accommodated in the space between the mounting base and the main body body. The power cord is wound around the engaging shaft body. So that it is wound along the back of the body. The holding means for holding the power cord formed by providing the same main body.
[0012]
Therefore, in this case, the holding means for holding the power cord is provided on the main body so that the power cord is wound along the back surface of the main body so that the power cord is not wound around the engaging shaft body. By holding the surplus length portion of the power cord by means, winding it in advance around the engaging shaft body of the main body body, and attaching and integrating the main body body to the mounting base, It can accommodate in the space | interval part formed.
[0013]
Therefore, the extra length of the power cord is stored in the space between the mounting base and the main body, and the work to wind up and accommodate the extra length of the power cord is integrated with the mounting base. This can be done in advance on the main body side before making it easy, and it is easy and safe. In addition, since the extra length of the power cord is wound around the back surface of the main body so as not to wind around the engaging shaft, the main body can be easily removed from the mounting base without any trouble.
[0014]
Further, residential emergency sensor according to claim 1 of the present invention is characterized in that the back middle of the body the body was derived the power cord from a position near the engagement shaft member.
[0015]
Therefore, especially in this case, the power cord is led out in the vicinity of the engaging shaft body in the middle of the back surface of the main body, so that the power cord led out from the middle of the back surface of the main body is smoothly moved to the outer peripheral side. And is held by holding means.
[0018]
Further, residential emergency sensor according to claim 1 of the present invention, the back side rim portion of the body the body to form a concave-shaped step portion, the concave-shaped step portion is a winding end portion of the power cord same The holding means is fitted and held on the peripheral edge of the back surface.
[0019]
Therefore, in this case, in particular, a holding means including a concave step is formed at the peripheral edge of the back surface of the main body, so that the final winding portion of the power cord derived from the back surface of the main body is the same back surface. It is fitted and held by the holding means of the peripheral portion, and the winding length that becomes the extra length portion of the power cord is set appropriately, and the winding length is securely held, so that the other length of the power cord can be maintained. It is possible to prevent loosening of the wiring in the portion.
[0020]
The residential disaster prevention sensor according to claim 2 of the present invention is the residential disaster prevention sensor according to claim 1 , wherein a plurality of recessed stepped portions are provided at substantially equal intervals in the circumferential direction on the peripheral edge of the back surface of the main body. The holding means is arranged in the arrangement.
[0021]
Accordingly, in this case, in particular, a plurality of recessed stepped portions serving as holding means are arranged and formed at substantially equal intervals in the circumferential direction on the back surface peripheral portion of the main body body. By selecting and fitting and holding the final winding part of the power cord to this, the winding length of the power cord is appropriately set in a wider range and protrudes outward from the main body of the power cord. Therefore, it is possible to easily cope with a change in the wiring protruding direction.
[0022]
The disaster prevention sensor for housing according to claim 3 of the present invention is the disaster prevention sensor for housing according to any one of claims 1 to 2 , wherein the rear side of the main body is separated from the mounting base. It is characterized by being inclined as described above.
[0023]
Therefore, especially in this case, since the back surface of the main body is inclined so as to be away from the mounting base on its peripheral side, the power cord is smoothly wound up to the peripheral side on the back surface of the main body, The work of winding up and storing the extra length of the power cord becomes easier.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1-4 has shown the disaster prevention sensor for houses which is one Embodiment corresponding to all Claims 1-3 of this invention. The disaster prevention sensor for a house according to this embodiment includes a sensing unit 1 and a power circuit 2, a main body 4 from which a power cord 3 connected to the power circuit 2 is derived, and the main body 4 in the building. And a mounting base 6 for mounting and fixing to the installation surface 5. An engagement shaft body 7 projects from the middle of the back surface of the main body 4, and an engagement receiving portion 8 is formed at a position corresponding to the engagement shaft body 7 on the surface of the mounting base 6. By inserting and locking the distal end portion of the engagement shaft body 7 to the receiving portion 8, the main body 4 is attached and integrated with the mounting base 6.
[0025]
Further, in the residential disaster detector of this embodiment, the power cord 3 led out from the main body 4 is wound around the engaging shaft body 7 and is disposed in the space between the mounting base 6 and the main body 4. Be contained. Here, the main body body 4 is provided with holding means A and B for holding the power cord 3 so that the power cord 3 is wound around the back surface of the main body 4 so that the power cord 3 is not wound around the engaging shaft 7. In addition, the power cord 3 is derived (derived portion 3b) from the position near the engagement shaft 7 in the middle of the back surface of the main body 4.
[0026]
In the residential disaster detector of this embodiment, a spiral guide groove 9 centering on the engagement shaft 7 is formed on the back surface of the main body 4, and the guide groove 9 winds up the power cord 3. It becomes the holding means A which engages and holds the part on the same back surface. Further, a recessed step 10 is formed in the peripheral portion of the back surface of the main body 4, and the concave step 10 holds and holds the final winding portion 3 c of the power cord 3 in the peripheral portion of the back surface. B. In this case, a plurality of recessed step portions 10 are arranged and formed at substantially equal intervals in the circumferential direction on the peripheral edge of the back surface of the main body 4, and the holding means B is further provided. Is formed so as to be inclined so that the peripheral side is away from the mounting base 6.
[0027]
Hereinafter, the residential disaster detector of this embodiment will be described more specifically. This residential disaster detector is a residential fire alarm, and emits (outputs) an alarm (voltage signal) when smoke or heat is detected by the sensing unit 1. In addition to the fire alarm device, the residential disaster prevention sensor may have only a gas leak alarm device or a detection function and transmit a detection signal to another notification device. The residential disaster detector includes a main body 4, a mounting base 6, a power cord 3, and the like.
[0028]
The main body 4 is a substantially disc-shaped hollow case made of synthetic resin, metal, or the like, and is formed by detachably connecting a substantially back-shaped back cover member 4a and a front cover member 4b. The back cover member 4a and the front cover member 4b are engaged with each other at their peripheral portions and are fitted and integrated into a hollow case-shaped main body 4. A printed circuit board 11, a power supply circuit 2 and a sensor 1, a warning means 12 such as a buzzer or a bell, and a switch 14 are accommodated and installed in the hollow interior of the main body 4.
[0029]
Here, the sensing unit 1 detects smoke generated in the event of a fire, and uses an optical stand incorporating a light projecting element, a light projecting lens, a light receiving element, a labyrinth, and the like. The detection unit 1 may be a heat detection type using a semiconductor other than a smoke detection type using an optical bench, or may detect the presence of a gas. The detection result of the sensing unit 1 is transmitted as a detection signal to the alarm unit 12, and the alarm unit 12 is notified by a buzzer, a bell or the like, and a fire occurrence alarm is issued.
[0030]
The sensing unit 1 is accommodated so as to protrude downward at the approximate center of the front cover member 4b of the body body 4, and the periphery thereof is provided with an insect net or the like. A switch 14 is provided on the side of the sensing portion 1 of the front cover member 4b, and a plurality of slit-shaped holes 13 are formed on the opposite side of the switch 14, and the plurality of holes 13 are provided as the alarm means. The sound generated by the alarm means 12 is easily notified to the outside through the plurality of holes 13. The switch 14 is operated when performing an operation check in a normal monitoring state, and is operated when performing an alarm stop for a predetermined time in a fire alarm state.
[0031]
One end 3a of a power cord 3 is connected to the power supply circuit 2, and a plug 15 is connected to the other end of the power cord 3 for plugging into a power feeding portion (a wall outlet for a residential AC 100V power line). Yes. The power cord 3 is led out from the vicinity of the engaging shaft body 7 to the outside of the main body body 4 in the middle of the back cover member 4 a of the main body body 4. A guide groove 9 is formed on the back surface of the back cover member 4a of the main body 4 so as to expand in a spiral shape starting from the lead-out portion 3b of the power cord 3, and the guide groove 9 is wound around the power cord 3. It becomes the holding means A for engaging and holding the take-up part.
[0032]
In this case, as shown in FIG. 4A, the guide groove 9 serving as the holding means A is a square groove, and the power cord 3 having a substantially rectangular cross section is engaged and held. Further, the power cord 3 is detached from the guide groove 9 at an appropriate position before the outer final end of the guide groove 9, and the detached portion is fitted and held by the holding means B as the final winding portion 3c of the power cord 3. . The holding means B is composed of four recessed step portions 10 formed at substantially equal intervals on the peripheral edge portion of the back cover member 4a of the main body body 4. The final winding part 3c of the cord 3 is fitted and held.
[0033]
In this case, as shown in FIG. 4 (b), each recessed stepped portion 10 serving as the holding means B is formed as a square opening, and protrusions 25 opposed on both sides are formed on the opening edge. The power cord 3 inserted into the notched step 10 by the protrusion 25 is fitted and held so as not to come off. Each recessed step 10 serving as the holding means B and the guide groove 9 serving as the holding means A are formed integrally with the back cover member 4a of the main body 4, and the holding means A and the holding means B The main body 4 is attached and integrated with the mounting base 6 while the power cord 3 is held.
[0034]
Further, the engaging shaft 7 projecting from the main body 4 is composed of a pair of upright pieces 16, which are integrally projected in the middle of the back surface of the back cover member 4 a of the main body 4. An engaging claw portion 17 that is bent inward is formed in the portion. On the other hand, the engagement receiving portion 8 formed on the mounting base 6 is composed of a pair of slits 23, and an insertion port portion 24 corresponding to the engagement claw portion 17 is formed in both slits 23. Both the upright pieces 16 serving as the engagement shaft body 7 and the both slits 23 serving as the engagement receiving portion 8 are disposed on the circular arc track having the same diameter, and both are rotated while being engaged with each other. The
[0035]
When the engaging claw portion 17 is inserted from the insertion port portion 24 and the main body 4 is rotated together with the engaging shaft body 7, the upright piece 16 that becomes the engaging shaft body 7 becomes the engagement receiving portion 8. The slit 23 is locked so as not to come off. As a result, the distal end portion of the engagement shaft 7 is inserted and locked in the engagement receiving portion 8, and the main body 4 is attached and integrated with the mounting base 6. That is, the main body 4 is attached to and integrated with the mounting base 6 by inserting and locking the engagement shaft body 7 with respect to the engagement receiving portion 8 by a so-called twist lock method.
[0036]
The mounting base 6 is formed in a substantially circular flattened shape opened on the back side, and is composed of a bottom plate portion 18 and a peripheral wall portion 19 and is integrally formed of synthetic resin, metal, or the like. The bottom plate portion 18 of the mounting base 6 is provided with a positioning hole 20 and a position adjusting hole 21 in addition to the engagement receiving portion 8 formed by both the slits 23. The mounting base 6 is attached and fixed to the ceiling surface which becomes the installation surface 5 in the building by screws 22 inserted through the adjustment holes 21.
[0037]
Then, the main body 4 is attached and integrated to the mounting base 6 as described above in a state where the mounting base 6 is mounted and fixed on a high ceiling surface serving as the installation surface 5. At this time, the power cord 3 is wound around the main body 4 in advance along the back surface of the main body 4 so that the power cord 3 is not wound around the engaging shaft 7 and is not entangled. It is held by A and holding means B. Also, in this case, the protruding height of the upright piece 16 that becomes the engaging shaft 7 projecting from the main body 4 is sufficiently larger than the thickness of the engaging receiving portion 8 of the mounting base 6. Therefore, when this main body 4 is attached to the same attachment base 6, a gap is formed between the two, and the extra length portion of the power cord 3 is wound and accommodated in this gap portion.
[0038]
Therefore, in the residential disaster detector of this embodiment, the power cord 3 is held so that the power cord 3 is wound along the back surface of the main body 4 so as not to be wound around the engaging shaft body 7. Since the means A and B are provided in the main body 4, the extra length of the power cord 3 is held by the holding means A and B and is wound around the engaging shaft body 7 of the main body 4 in advance. In addition, by attaching and integrating the main body 4 to the mounting base 6, it can be reliably accommodated so as not to protrude from the space formed between them.
[0039]
Therefore, the surplus length portion of the power cord 3 is fit in the space between the mounting base 6 and the main body 4, and the work of winding up and storing the surplus length portion of the power cord 3 is performed by attaching the main body body 4. Before being integrated with the base 6, it can be performed in advance as a low-place work on the main body 4 side, which is simple and safe. In addition, since the surplus length portion of the power cord 3 is wound around the back surface of the main body 4 so as not to be wound around the engaging shaft body 7, the wound power cord 3 is not overlapped at the interval portion. The main body 4 can be easily removed from the mounting base 6 without hindrance.
[0040]
Further, in the residential disaster prevention sensor of this embodiment, the lead-out position 3b of the power cord 3 is in the vicinity of the engagement shaft body 7 in the middle of the back surface of the main body body 4, and therefore from the middle of the back surface of the main body body 4. The derived power cord 3 is smoothly wound around the outer periphery and is held by holding means A and holding means B. Further, in this case, since the holding means A including the spiral guide groove 9 centering on the engagement shaft 7 is formed on the back surface of the main body 4, the power source derived from the middle of the back surface of the main body 4 is used. The cord 3 is engaged and held by the holding means A, and the winding portion of the power cord 3 can be surely wound and held along a predetermined path.
[0041]
In addition, since the holding means B including the concave stepped portion 10 is formed at the peripheral edge of the back surface of the main body 4, the final winding part 3 c of the power cord 3 derived from the middle of the back surface of the main body 4 is the same. The power cord is fitted and held by the holding means B at the peripheral edge portion of the back surface, and the winding length to be the extra length portion of the power cord 3 is appropriately set, and the winding length is surely held. 3 is reliably prevented from protruding from the spacing portion, and loosening of the wiring in other portions of the power cord 3 is also prevented. Here, the power cord 3 is held and fixed by the fasteners 26 on the ceiling surface serving as the installation surface 5 so that the power cord 3 is not loosened.
[0042]
Further, in this case, a plurality of recessed stepped portions 10 serving as the holding means B are arranged and formed at substantially equal intervals in the circumferential direction on the peripheral edge of the back surface of the main body 4. By selecting one and fitting and holding the final winding portion 3c of the power cord 3, the winding length of the power cord 3 is appropriately set in a wider range. It is possible to easily cope with a change in the wiring protruding direction in which the wiring protrudes outward from the wiring 4.
[0043]
Further, in the residential disaster prevention sensor of this embodiment, the upper surface of the back cover member 4a which is the back surface of the main body 4 is formed so as to be inclined outward and downward away from the mounting base 6 at the peripheral side. The power cord 3 is easily wound smoothly on the back side of the main body body 4 to the outside of the peripheral side, and the work of winding and storing the extra length of the power cord 3 becomes easier.
[0044]
In addition, the engagement shaft body 7 and the engagement receiving portion 8 in the disaster prevention sensor for a house of the present invention are not limited to those of a form that is rotationally locked as in the above-described embodiment. For example, the engagement shaft body 7 It may be configured such that the distal end portion of the mate is fitted and locked only by being inserted into the engagement receiving portion 8. Moreover, the disaster prevention sensor for houses of this invention may be attached and fixed to this installation surface 5 by making a wall surface, a floor surface, etc. into the installation surface 5 other than a ceiling surface.
[0045]
【The invention's effect】
As described above, in the disaster prevention sensor for a house according to claim 1 of the present invention, the extra length portion of the power cord is housed in the space between the mounting base and the main body, and the extra length portion of the power cord is The winding and storing operation can be performed in advance on the body body side and is simple and safe. The body body can be easily removed from the mounting base without any trouble.
[0046]
Moreover, smooth in residential disaster sensor of claim 1, wherein the present invention, particularly, a power cord that is derived from a position near the engagement shaft of the rear surface middle of the main body, to the outer periphery at the same backside And is held by holding means.
[0048]
Further, in the residential prevention sensor according to the first aspect of the present invention, in particular, is fitted and held by the holding means composed of a winding end portion of the power cord in concave-shaped step portion, surplus portions of the power cord By properly setting and properly holding the winding length, it is possible to prevent slack in other portions of the power cord wiring.
[0049]
Moreover, in the disaster prevention sensor for a house according to claim 2 of the present invention, in particular, by fitting and holding the winding-up final part of the power cord in one selected concave stepped portion, The winding length is appropriately set in a wider range, and it is possible to easily cope with the change in the wiring protruding direction of the power cord.
[0050]
Further, in the residential disaster prevention sensor according to claim 3 of the present invention, in particular, the power cord is smoothly wound around the back surface of the main body body to the peripheral side because the back surface of the main body body is inclined. Thus, the work of winding up and storing the extra length of the power cord becomes easier.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a mounting state of a residential disaster prevention sensor according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an exploded state of the disaster prevention detector for the house.
FIG. 3 is a perspective view showing an external appearance of the disaster prevention detector for a house in an attached state.
4A and 4B show a holding state of the power cord in the holding means of the disaster prevention sensor for the house, wherein FIG. 4A is a cross-sectional view showing a holding state in the holding means A formed by a guide groove, and FIG. Sectional drawing which shows the holding state in the holding means B which consists of a part.
5A and 5B show a conventional disaster prevention sensor for a house, in which FIG. 5A is a perspective view showing an exploded state thereof, and FIG. 5B is a cross-sectional view showing an attached state thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sensing part 2 Power supply circuit 3 Power supply cord 4 Main body 5 Installation surface 6 Mounting base 7 Engagement shaft body 8 Engagement receiving part 9 Guide groove
10 Recessed step A Holding means B Holding means

Claims

A main body including a sensing unit and a power supply circuit, from which a power cord connected to the power supply circuit is derived, and a mounting base for mounting and fixing the main body to an installation surface in a building. An engagement shaft is provided in the middle of the back surface of the body, and an engagement receiving portion is formed at a position corresponding to the engagement shaft on the surface of the mounting base, and the engagement shaft is formed on the engagement receiving portion. By inserting and locking the front end of the housing, the main body is attached to and integrated with the mounting base, and the power cord led out from the main body is wound around the engaging shaft. It is a residential disaster prevention sensor housed in the space between the mounting base and the main body body, so that the power cord is wound around the back surface of the main body body so that the power cord is not wrapped around the engaging shaft body. The holding means for holding the power cord is A residential emergency sensor formed by providing the, by deriving the power cord from a position near the engagement shaft member at the backside middle of the main body, to form a concave-shaped step portion on the back side rim portion of the main body The housing disaster prevention sensor is characterized in that the recessed step portion serves as a holding means for fitting and holding the final winding portion of the power cord to the peripheral portion of the back surface .

Residential disaster sensor according to claim 1, characterized in that disposed holding means arranged forming a plurality of concave-shaped step portion at substantially equal intervals in the circumferential direction on the back side rim portion of the main body.

The residential disaster prevention sensor according to any one of claims 1 to 2 , wherein the rear surface of the main body body is formed so as to be inclined so that a peripheral side thereof is separated from the mounting base.