JP3868029B2

JP3868029B2 - Electric lock for sliding door

Info

Publication number: JP3868029B2
Application number: JP15335396A
Authority: JP
Inventors: 茂谷守
Original assignee: 美和ロック株式会社
Priority date: 1996-05-23
Filing date: 1996-05-23
Publication date: 2007-01-17
Anticipated expiration: 2016-05-23
Also published as: JPH09310539A

Description

【０００１】
【発明の属する技術分野】
本発明は引戸用電気錠に関する。本発明は、例えば特別養護老人ホームや病院などの引戸用電気錠に適する。
【０００２】
【従来の技術】
引戸用電気錠は実開昭５１−１８８９３号公報に一例が開示されている。この種の引戸用電気錠は、錠ケースを戸枠の上枠内に横設し、錠ケース内には引戸側に取り付けられたラッチ受け金具と係脱するラッチを含む施解錠機構が内蔵されている。
【０００３】
この実施例は、施解錠機構に駆動源としてのソレノイドを採用し、また施解錠信号を検出するために１個の検出手段が設けられているが、閉扉信号（ここでは「引戸が完全に閉じた信号」を意味する。）を取り出すための具体的な構成が示されていない。
【０００４】
ところで、特別養護老人ホームや病院では、天気の良い日などには、「風を入れたい」という理由で引戸を多少開くような場合がある。このような場合、閉扉信号を取り出すための検出手段を備えてない引戸用電気錠は、管理上から望ましくない。けだし、施解錠信号を検出する場合は必ず引戸が完全に閉じたことを条件としている訳ではなく、引戸が開いている場合に於いても、駆動源が作動すれば施解錠信号を検出することができるからである。それ故に、施解錠信号を検出する検出手段以外に閉扉信号を取り出す検出手段を錠ケースに設けることが要望されている。
【０００５】
しかして、一般に閉扉信号を取り出す場合、例えば磁気感応スイッチを掲げることができるが、戸枠の上枠側の錠ケース（特に錠ケースに内装される磁気感応スイッチ）と引戸側に取り付けられたラッチ用受け金具との間には必ず間隙或いは距離があるので、有効かつ確実な閉扉信号を取り出すのが困難である。
【０００６】
【発明が解決しようとする課題】
本発明は以上のような従来の要望点や閉扉信号の取り出し困難性に鑑み、第１の目的は引戸用電気錠に於いて、有効或いは確実な閉扉信号を取り出すことができることである。第２の目的は閉扉信号を検出するために複数個の検出手段並びにラッチ等を錠ケースに配設しても、錠ケースのコンパクト化の要望を満たすことができることである。第３の目的は駆動体としてのラッチの後退動により従動体としてのトリガが錠ケース内にスムースに引込むことである。なお、本発明の付随的な目的は、引戸側に取り付けられたラッチ係合部材の係合片の突出量を任意に設定することができることである。
【０００７】
【課題を解決するための手段】
本発明の引戸用電気錠は、引戸１側に取り付けられたラッチ係合部材３と、このラッチ係合部材３に摺接状態で係脱するラッチ５０を含む施解錠機構Ｘを内蔵し、かつ、戸枠側に設けられた錠ケース７とから成る引戸用電気錠に於いて、前記施解錠機構Ｘは、駆動源３０の作動杆３１の伸縮動により回動するように錠ケース７に軸支された回動ロック部材３５と、この回動ロック部材３５にロックされるように錠ケース７に回転及び上下動可能に軸支されていると共にラッチ用復帰バネ７９で常時進出方向に付勢された前記ラッチ５０と、引戸を開いた場合にはラッチと共に錠ケース７から進出する反面、引戸を完全に閉じる方向へ移動させると、ラッチを介してかつ復帰バネ７７のバネ力に抗して錠ケース７内へと引っ込む従動体７０と、この従動体７０及び前記駆動体としてのラッチ５０の進退動を利用し、引戸１が完全に閉じたことを検出するために錠ケース７内に配設された複数個の検出手段８０、８１とを備えている。
【０００８】
上記構成に於いて、従動体７０は前後の壁７１を有し、ラッチ５０の支軸５９に支持されるように組み合わせられ、かつ、軸を介して錠ケース７の案内部１２に上下方向に案内されることを特徴とする。
【０００９】
【発明の実施の形態】
以下、図面に示す本発明の実施の形態を、引戸１の上端部或いは上框２に取り付けた受け金具手段としてのラッチ係合部材３と、このラッチ係合部材３の係合片５に係脱するラッチ５０を含む電気錠の施解錠機構Ｘを内蔵し、かつ、望ましくは戸枠の上枠Ｆ内に設けられた錠ケース７との関係で説明する。
【００１０】
まずラッチ係合部材３について説明する。このラッチ係合部材３は、図１乃至図３で示すように引戸１の上框２に埋設的に取付けられる係合片調整用支持箱４と、この支持箱４に下端部５ａが上下方向にスライド可能に内装され、一方、支持箱から突出する上端部５ｂが後述するラッチに係止される係合片５と、この係合片５の突出量を任意に設定した後に該係合片５を前記支持箱４に固定する固定具６とから成る。
【００１１】
しかして、図４で示すように前記係合片調整用支持箱４の上端部には固着具としてのオネジ８用の貫通孔を有するフランジ部９が形成され、このフランジ部９に下方には筒状の矩形収納部１０が連設している。そして、前記矩形収納部１０の中央部には、縦方向に調整長孔１０ａが形成されている。一方、前記係合片５は全体として板状の小片であり、上端部５ｂ寄りの部位から下端部５ａに至る左右の側壁部５ｃ、５ｄは直角方向に折曲し、互いに対向している。そして、係合片５の下端部５ａ寄りの部位には、前記調整長孔１０ａと符合する固定具６のボルト６ａ用貫通小孔５ｅが形成されている。なお、６ｂは座金、６ｃはボルト６ａに螺着するナットであり、これらは固定具６の一部を構成する。
【００１２】
次に施解錠機構Ｘを内蔵する錠ケース７について説明する。錠ケース７は長箱状に形成され、上述したように戸枠の上枠Ｆ内に横設されている。ここで図３を基準にすると、７ａは前壁、７ｂは後壁、７ｃは左側壁、７ｄは右側壁、７ｅは上壁、７ｆは底壁である。
【００１３】
ところで、図１又は図３で示すように前壁７ａ及び後壁７ｂには、それぞれ対向する複数個の案内部としての垂直ガイド長孔１１、１２、１３や軸孔１４、１５が適宜に形成されている。
【００１４】
しかして、１１は錠ケース７の右側壁７ｄ寄りの部位に形成されたやや弧状の或いは弧状部を有する第１垂直ガイド長孔で、この第１垂直ガイド長孔１１にはラッチ５０を案内するガイド部材としての横軸１６が横架されている。また１２は第１垂直ガイド長孔の左隣に位置する第２垂直ガイト長孔で、この第２垂直ガイド長孔１２には駆動体としてのラッチ５０と共に錠ケース７内に後退動する従動体（トリガ）７０の短軸（突起軸）７６が係合する。
【００１５】
また１３は第２垂直ガイド長孔１２の左隣に位置する第３垂直ガイド長孔で、この第３垂直ガイト長孔１３には横軸と相俟ってラッチ５０を上下方向に案内するラッチ突起軸６０が係合する。また１４は錠ケース７の中央部寄りの部位に形成された第１軸孔で、この第１軸孔１４には回動ロック部材を枢支する軸（突起軸又は横軸）１７が係合する。さらに、１５は第１軸孔１４と第３垂直ガイド長孔１３との間に位置する第２軸孔で、この第２軸孔には従動体（トリガー）の後退動により検出手段を「ＯＮ」する押圧片８２を枢支する支軸１８が係合する。
【００１６】
なお、前記底壁７ｆの下面には錠ケース７の一部を形成する長板状の取付け板１９が固定的に設けられ、この取付け板１９には固着具２０を介してフロント板２１が一体的に取付けられている。このフロント板２１及び取付け板１９の両端部は錠ケース７の左右の側壁７ｃ、７ｄからそれぞれ突出し、かつ、各板の右端部よりの部位には前記垂直ガイド長孔１１、１２、１４のそれぞれ位置を考慮してラッチ用貫通孔２２が形成されている。
【００１７】
次に施解錠機構Ｘを構成する各部材について説明する。この施解錠機構Ｘは、回転及び上下方向に移動可能な駆動体（ラッチ）５０及び該駆動体の後退動により錠ケース７内に引込められる従動体（トリガ）７０の移動を利用し、本実施例では引戸１が完全に閉じたことを検出する複数個の信号検出手段８０、８１を有している。
【００１８】
まず図５で示すように、３０は駆動源の一例としてのソレノイドである。このソレノイド３０は錠ケース７内に横設され、かつ、図示しない接続コードを介して制御装置に接続している。３１はソレノイド３０の作動杆で、この作動杆３１は水平方向に伸縮動するが、本実施例では通電時に収縮し、一方、非通電時は伸張する。そして、作動杆３１の突出先端部には駆動ピン３３が作動杆と交差する水平方向に突出している。
【００１９】
次に３５は作動杆３１の伸縮動により回動するように錠ケース７に軸１７を介して軸支された回動ロック部材である。回動ロック部材３５は、前記駆動ピン３３を介し、作動杆３１が収縮するとラッチの回転を阻止するロック方向（時計方向）に、一方、作動杆３１が伸張するとラッチの回転を許容するロック解除方向（反時計方向）にそれぞれ回転する。この回動ロック部材３５は、図５を基準にすると、基本的には前後一対の対向軸受板３６と、この前後一対の対向軸受板３６を作動杆３１の上方の位置で連結する連結板３７とから成る。
【００２０】
しかして、前記対向軸受板３６の下端部は作動杆３１と外嵌合するように下方に延び、かつ、駆動ピン３３と係合する逆Ｕ字状り切欠部３８を有する。また対向軸受板３６の上端部の左側には連結板の一部である突起部３９が形成され、この突起部３９は上壁７ｅの内壁面に固定的に配設された第１検出手段４０とプッシュ式に接触可能である。この第１検出手段４０はソレノイド３０の作動杆３１の伸縮動により回動ロック部材３５が回動すると、施解錠機構Ｘの施解錠信号を検出する。
【００２１】
また対向軸受板３６の右上端部寄りの部位にはやや幅広のロックアーム部４１が突出形成され、このロックアーム部４１には錠ケース７内に位置するラッチの垂直当接面６１ａと当接する水平ローラ４２が軸支されている。そして、回動ロック部材３５は軸１７に巻装されたロック解除用バネ４４により、常時ロック解除の方向（反時計方向）に付勢されている。
【００２２】
次に錠ケース７のラッチ用貫通孔２２から進退動可能に突出するラッチ５０について説明する。本実施例に於いては、ラッチ５０は従動体（トリガ）７０との関係では駆動体としの機能を発揮する。また引戸１の係合片５との関係ではストッパーとしの機能を発揮する。さらに、複数個の検出手段８０、８１との関係では引戸１が完全に閉じたか否かをの信号を検出するために利用されている。
【００２３】
そこで、このラッチ５０を図３、図６、図１０等に基づいて説明すると、５１は錠ケース７から突出する垂直係止面である。この垂直係止面５１はクランク状の前後の壁７１、７１を有する従動体７０の中央下部側垂直面７２に面接触すると共に、引戸側の係合片５の上端部５ｂと係合可能である。
【００２４】
５２は垂直係止面５１の下端縁から後方へ連設するテーパー状摺接面である。このテーパー状摺接面５２は引戸側の係合片５と摺接する。５３はテーパー状摺接面５２にやや弧状に連設すると共に、ラッチ用貫通孔２２に遊嵌合する後方連設部である。５４はこの後方連設部５３と錠ケース７内に常時位置する上壁５５にそれぞれ連設する湾曲或いは突起部で、この突起部５４は、本実施例では後述する前壁の一部を形成し、検知手段８０の可動接片８０ａと当接している。なお、この突起部５４の形状は幅広に形成するなど任意に設計変更可能である。
【００２５】
５６はテーパー状の壁で、このテーパー状壁５６には横方向に軸筒部５６ａが設けられている。
【００２６】
５７は全体としてピストル形状に形成された前後の側壁で、この前後の側壁５７には、前述した錠ケース７の第１垂直ガイド長孔１１と係合する横軸１６用軸孔５８、従動体７０の中央下部側垂直面７２と交差方向に連設する水平面７３を受ける突起状の短い支軸５９、錠ケース７の第３垂直ガイド長孔１３と係合する突起軸６０がそれぞれ適宜に形成されている。
【００２７】
６１は前記上壁５５の先端部に突起状に形成され、かつ、回動ロック部材３５の水平ローラ４２と当接する垂直当接面６１ａを有する当接部である。
【００２８】
次に引戸１を完全に閉じた場合にラッチ５０の後退動により錠ケース内に後退させられる反面、引戸１を開いた場合にバネ部材７７のバネ力により初期位置へと自動的に復帰する従動体７０について説明する。
【００２９】
この従動体７０は、図８、図１０で示すようにクランク状のイメージを彷彿させる前後の壁７１と、この前後の壁７１の下部側の先端縁を連結する垂直の連結板７４と、ラッチ５０の垂直係止面５１と摺接する底壁７５とから成る。
【００３０】
しかして、前記前後の壁７１の上部側には錠ケース７の第２垂直ガイド長孔１２と係合する突起状の短軸７６が設けられ、一方、前後の壁７１の下部側には従動体用復帰バネ７７を支持する支持バー７８が横方向に内設されている。なお、前記従動体用復帰バネ７７の一端部は支軸１８に直接又は間接的に当たり、一方、その他端部は従動体７０の底壁内面に圧接している。また７９は錠ケース７内の右側壁７ｄ寄りの部位に固定棒７９ａを介して設けられたラッチ用復帰バネで、このラッチ用復帰バネ７９の一端部はラッチの横軸１６に当たり、その他端部は錠ケース７の内壁面に圧接している。
【００３１】
次に駆動体（ラッチ）５０及び従動体（トリガ）７０の移動を利用して引戸１が完全に閉じたことを検出する複数個の検出手段８０、８１について説明する。図３を見ると、この実施例では合計３個の検出手段４０、８０、８１が錠ケース７内に固定的に配設されているが、第１検出手段４０は前述したように施解錠機構Ｘの施解錠信号を検出するためのものであるのに対し、第２検出手段８０及び第３検出手段８１は引戸１が完全に閉じたか否かの信号を検出するためのものである。
【００３２】
しかして、前記第２検出手段８０は、本実施例ではラッチ５０の突起状後壁５４と当接する可動接片８０ａを有し、錠ケース７内の右側壁７ｄ寄りの部位に位置している。この第２検出手段８０は、図３で示すようにラッチ５０がラッチ用復帰バネ７９のバネ力により錠ケース７から初期位置に出ている場合には「ＯＮ」となり、一方、ラッチ５０が、矢印Ａ方向（引戸の閉じる方向）に移動する引戸側の係合片５により、復帰バネ７９のバネ力に抗して錠ケース７内に後退動した場合には「ＯＦＦ」と成る。なお、前記可動接片８０ａは基端部が検知器本体に枢支され揺動可能である。
【００３３】
また前記第３検出手段８１は、本実施例では従動体７０の連結板７４と摺接する押圧片８２の折曲した親指状の押圧部８２ａと当接するバー状可動子８１ａを有し、錠ケース７内の略中央部に位置している。この第３検出手段８１は従動体７０がラッチ５０の後退動を介して錠ケース７内に後退すると、前記押圧片８２を介して「ＯＮ」となり、一方、図３（引戸が開放した場合の図）で示すように従動体用復帰バネ７７のバネ力により初期位置に復帰すると「ＯＦＦ」と成る。
【００３４】
なお、水平方向に移動可能な前記バー状可動子８１ａは、検知器本体に内装されたバネにより常時摺動体７０の方向に付勢され、その突出頭部は押圧片８２の押圧部８２ａと当接している。
【００３５】
上記構成に於て、まず図１２はソレノイド３０が非通電時の状態の場合に於いて、引戸１を閉じた状態から開放方向Ｂへ移動させた場合のラッチ５０の説明図である。ソレノイド３０が非通電時の状態の場合は、停電時はもちろんであるが、例えば火災など非常時の場合に遠隔制御装置の制御によりなされる。この時ソレノイド３０の作動杆３１は回動ロック部材３５をロック解除の方向へ付勢するバネ４４のバネ力により伸張する。すなわち、回動ロック部材３５がバネ４４のバネ力により軸１７を支点に反時計方向に回転すると、作動杆３１が伸張すると共に、回動ロック部材３５の水平ローラ（軸）４２がラッチ５０の当接部６１から外れ、これによりラッチ５０は回動ロック部材３５から開放される。
【００３６】
そこで、図１２で示すように引戸１を開放方向Ｂに移動させると、係合片５の上端部５ｂがラッチの垂直係止面５１に当接しているので、ラッチ５０は突起軸６０を中心に反時計方向に回転する。この時ラッチ５０は復帰バネ７９のバネ力に抗して回転する。そして、ラッチ５０が係合片５の移動に伴い所定量回転すると、ラッチ５０と係合片５の係合状態が解消し、したがって、引戸１を完全に開放することができる。
【００３７】
この場合第２検出手段８０は、ラッチ５０の突起部或いは設計如何によっては後壁５４が第２検出手段８０から一旦離れることにより「ＯＦＦ」となるものの、ラッチ５０が直ちにラッチ用復帰バネ７９のバネ力により初期位置へと戻るので「ＯＮ」となるのに対し、第３検出手段８１は、従動体７０が係合片５からの開放に伴いその復帰バネ７７のバネ力により初期位置に復帰するので「ＯＦＦ」と成る。
【００３８】
したがって、このような場合第２検出手段８０と第３検出手段８１との組み合わせから成る両方の検出信号を、引戸１が開いていることとして取り扱うことができる。
【００３９】
次に図１３は引戸１がある程度開いている場合に於いて、ソレノイド３０が通電状態に成った場合の説明図である。ソレノイド３０が通電状態になると、本発明の施解錠機構Ｘのラッチ５０は引戸１の開く方向Ｂの力に対しては完全にロックされる反面、引戸１を閉じる方向Ａに対しては後退動可能である。しかして、ソレノイド３０が通電状態になると、作動杆３１は回動ロック部材３５を付勢するバネ４４のバネ力に抗して収縮する。この作動杆３１が収縮すると、回動ロック部材３５は軸１７を支点に時計方向に回転する。そうすると、回動ロック部材３５の水平ローラ４２がラッチ５０の当接部６１に当接し、これによりラッチ５０の回転は阻止される。
【００４０】
そこで、引戸１を完全に閉めようとし、図１４で示すように引戸１を開放位置から閉鎖方向Ａに移動させると、まず引戸１側の係合片５の上端部５ｂがラッチ５０のテーパー状摺接面５２に当たり、該ラッチ５０は錠ケース７内へと後退動する。この時ラッチ５０は複数個の垂直ガイド孔１１、１３に案内され、かつ、復帰バネ７９のバネ力に抗してそのままストレートに後退する。この時第２検出手段８０は、ラッチ５０の後退動により一旦「ＯＦＦ」の状態になる。一方、従動体７０はラッチ５０の支軸５９により錠ケース７内に引き込まれる。この時従動体７０は短軸７６を介して錠ケース７の第２垂直ガイド長孔１２に案内され、かつ、復帰バネ７７のバネ力に抗してラッチ５０と共にそのままストレートに後退する。そうすると、第３検出手段８１は、押圧片８２を介して従動体７０の後退動により「ＯＮ」の状態になる。
【００４１】
次に引戸１が完全に閉まると、従動体７０は図１５、図１、図２で示すように係合片５の上端部５ｂで支持される反面、ラッチ５０は係合片５がラッチ５０の摺接面５２を通過するので、復帰バネ７９により初期位置へと戻る。そうすると、第２検出手段８０は、ラッチ５０の進出動により「ＯＮ」の状態になる。したがって、このような場合第２検出手段８０の「ＯＮ信号」と第３検出手段８１の「ＯＮ信号」との組合わせから成る検出信号を、引戸１が完全に閉じていることとして取り扱うことができる。
【００４２】
【実施例】
まず本発明の実施例に於いては、第１乃至第３検出手段４０、８０、８１の一例としては、マイクロスイッチが使用される。錠ケース７にはラッチ５０を上下方向に案内する案内部は垂直ガイド溝であっても良い。またラッチ５０側に錠ケースの内壁と直接又は間接的にスライドする１つのガイド部を形成するならば、ラッチ５０は錠ケース７に少なくとも１個以上の案内部１３を介して回転及び上下動可能に軸支されていても良い。
【００４３】
また従動体７０の後退動を検出する第３検出手段８１は押圧片８２を介して信号を検知しているが、必ずしも前記押圧片８２を間接的に使用する必要はなく、たとえばラッチ側の第２検出手段８０と同様に可動接片を有する検出手段を用い、従動体７０の後退動の信号を直接検出しても良い。また水平方向に移動可能なバー状可動子８１ａの突出頭部をキノコ状或いは円錐状に形成することにより、押圧片８２を省いても良い。
【００４４】
さらに、ラッチ係合部材３は係合片５を有するが、この係合片５は必ずしも調整可能である必要がなく、もし、本実施例のように調整可能にするならば、係合片に調整垂直長孔を形成する等適宜に設計変更することは可能である。
【００４５】
【発明の効果】
以上の説明から明らかなように、本発明にあっては次に列挙するような効果がある。
（１）錠ケース７内に複数個の検出手段８０、８１を配設し、ラッチ係合部材３と摺接するラッチ５０の進退動及び該ラッチにより錠ケース内に引込まれる従動体７０の後退動を利用し、引戸１が完全に閉じたことを検出することができる。したがって、特別養護老人ホームや病院に於ける管理上の問題点を解消することができる。
（２）引戸用電気錠に於いて、有効或いは確実な閉扉信号を取り出すことができる。
（３）請求項２記載の発明は、１の部材（ラッチ）の進退動のみで信号を検出することができる。
（４）請求項３記載の発明は、従動体７０は前後の壁７１を有し、ラッチ５０に該ラッチの前後の側壁５７に設けられた支軸５９に支持されるように組み合わせられているので、閉扉信号を検出するために複数個の検出手段を錠ケースに配設しても、錠ケースのコンパクト化の要望を満たすことができる。
（５）請求項４記載の発明は、従動体７０の後退動の信号を確実に検出することができる。
（６）請求項５記載の発明は、引戸側に取り付けられたラッチ係合部材の係合片の突出量を任意に設定することができる。
【図面の簡単な説明】
図１ないし図１５は本発明の実施の形態を説明するための各説明図。
【図１】引戸を完全に閉じた状態に於いて、正面から見た場合の説明図。
【図２】図１に於いて、右側面からみた場合の説明図。
【図３】主要部（施解錠機構Ｘ）の説明図。
【図４】主要部（ラッチ係合部材）の斜視図。
【図５】要部（駆動源、回動ロック部材）の分解斜視図。
【図６】ラッチの斜視図。
【図７】ラッチの概略説明図（右側面から見た図）。
【図８】従動体の正面から見た場合の説明図。
【図９】従動体の右側面から見た場合の説明図。
【図１０】各部材（錠ケース、ラッチ、従動体、係合片など）の関係を示す説明図。
【図１１】図３に於ける主要部の一部拡大説明図。
【図１２】ラッチが回動ロック部材から開放され、引戸を開放方向へ引いた場合に於けるラッチの動きを示す概略説明図。
【図１３】引戸が開放し、かつ、ソレノイドが通電時の説明図。
【図１４】引戸が閉じる方向へ移動している場合に於いて、ラッチ、従動体の動きを示す概略説明図。
【図１５】施錠状態であり、かつ、引戸を完全に閉じた状態を示す概略説明図。
【符号の説明】
１…引戸、２…上框、３…ラッチ係合部材、４…支持箱、５…係合片、６…固定具、７…錠ケース、１１、１２、１３…垂直ガイド長孔、１４、１５、５８…軸孔、１６…横軸、１７…軸、１８…支軸、２１…フロント板、Ｘ…施解錠機構、３０…駆動源、３１…作動杆、３３…駆動ピン、３５…回動ロック部材、３６…対向軸受板、３７…垂直連結板、３８…切欠部、３９…突起部、４０…第１検出手段、４１…ロックアーム部、４２…水平ローラ、５０…ラッチ、５１…垂直係止面、５２…摺接面、５４…突起状後壁、５５…上壁、５６…切欠部、５７…前後の側壁、６０…突起軸、６１…当接部、７０…従動体、７１…前後の壁、７３…水平面、７４…連結板、７６…短軸、７７、７９…復帰バネ、７８…支持バー、８０…第２検出手段、８１…第３検出手段、８２…押圧片、Ａ…閉じる方向、Ｂ…開く方向。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric lock for sliding doors. The present invention is suitable for an electric lock for sliding doors such as a nursing home or a hospital.
[0002]
[Prior art]
An example of an electric lock for sliding doors is disclosed in Japanese Utility Model Laid-Open No. 51-18893. This type of sliding door electric lock has a lock case horizontally installed in the upper frame of the door frame, and the lock case has a built-in locking / unlocking mechanism including a latch that engages and disengages with a latch bracket attached to the sliding door side. ing.
[0003]
In this embodiment, a solenoid as a driving source is employed in the locking / unlocking mechanism, and one detection means is provided for detecting the locking / unlocking signal. However, the closing signal (here, “the sliding door is completely closed) is provided. The specific structure for taking out the signal is not shown.
[0004]
By the way, in nursing homes and hospitals, there are cases where sliding doors are slightly opened on a sunny day for reasons such as “I want to keep the wind”. In such a case, an electric lock for sliding doors that does not include a detection means for taking out the closing signal is not desirable from the viewpoint of management. However, the detection of the locking / unlocking signal is not necessarily based on the condition that the sliding door is completely closed. Even when the sliding door is open, the locking / unlocking signal should be detected if the drive source is activated. Because you can. Therefore, it is desired to provide a detection means for taking out the closing signal in the lock case in addition to the detection means for detecting the locking / unlocking signal.
[0005]
Thus, in general, when taking out a closing signal, for example, a magnetic sensitive switch can be raised, but a lock case on the upper frame side of the door frame (especially a magnetic sensitive switch built in the lock case) and a latch attached to the sliding door side. Since there is always a gap or a distance from the receiving bracket, it is difficult to obtain an effective and reliable door closing signal.
[0006]
[Problems to be solved by the invention]
In view of the above-described conventional demands and difficulty in taking out a closing signal, the first object of the present invention is to be able to take out an effective or reliable closing signal in a sliding door electric lock. The second object is to satisfy the demand for downsizing of the lock case even if a plurality of detection means and latches are provided in the lock case in order to detect the closing signal. The third purpose is that the trigger as the driven body is smoothly pulled into the lock case by the backward movement of the latch as the driving body. In addition, the incidental objective of this invention is that the protrusion amount of the engagement piece of the latch engagement member attached to the sliding door side can be set arbitrarily.
[0007]
[Means for Solving the Problems]
The electric lock for sliding doors of the present invention incorporates a latch engaging member 3 attached to the sliding door 1 side, and a locking / unlocking mechanism X including a latch 50 that engages and disengages in a sliding contact state with the latch engaging member 3, and In the sliding door electric lock comprising the lock case 7 provided on the door frame side, the locking / unlocking mechanism X is pivoted to the lock case 7 so as to be rotated by the expansion / contraction movement of the operating rod 31 of the drive source 30. The pivot lock member 35 is supported, and is pivotally supported by the lock case 7 so as to be able to rotate and move up and down so as to be locked by the pivot lock member 35. The latch return spring 79 is always urged in the advancing direction. When the sliding door is opened , the latch 50 advances from the lock case 7 together with the latch. On the other hand, when the sliding door is moved in the completely closing direction, the spring and the return spring 77 are resisted against the spring force. a driven body 70 retracts into the lock casing 7, A plurality of detection means 80 and 81 disposed in the lock case 7 for detecting that the sliding door 1 is completely closed by utilizing the forward and backward movement of the follower 70 and the latch 50 as the driving body. It has.
[0008]
In the above structure, the follower 70 has a wall 71 of the front and rear, it is combine to be supported on a support shaft 59 of the latch 50, and vertically to the guide portion 12 of the lock casing 7 via a shaft It is characterized by being guided to.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the embodiment of the present invention shown in the drawings is related to a latch engaging member 3 as a receiving metal means attached to the upper end of the sliding door 1 or the upper rod 2 and an engaging piece 5 of the latch engaging member 3. The description will be made in relation to a lock case 7 which incorporates an electric lock locking / unlocking mechanism X including a latch 50 to be detached and is preferably provided in the upper frame F of the door frame.
[0010]
First, the latch engaging member 3 will be described. As shown in FIGS. 1 to 3, the latch engaging member 3 includes an engaging piece adjusting support box 4 that is embedded in the upper arm 2 of the sliding door 1, and a lower end 5 a of the support box 4 in the vertical direction. On the other hand, an engagement piece 5 whose upper end portion 5b protruding from the support box is locked by a latch, which will be described later, and the engagement piece 5 after the protrusion amount of the engagement piece 5 is arbitrarily set And a fixture 6 for fixing 5 to the support box 4.
[0011]
As shown in FIG. 4, a flange portion 9 having a through hole for a male screw 8 as a fixing tool is formed at the upper end portion of the engagement piece adjusting support box 4. A cylindrical rectangular storage unit 10 is continuously provided. An adjustment long hole 10a is formed in the central portion of the rectangular storage portion 10 in the vertical direction. On the other hand, the engaging piece 5 is a small plate-like piece as a whole, and left and right side wall portions 5c and 5d extending from a portion near the upper end portion 5b to the lower end portion 5a are bent in a right angle direction and face each other. A through hole 5e for the bolt 6a of the fixture 6 that coincides with the adjustment long hole 10a is formed at a portion near the lower end 5a of the engagement piece 5. In addition, 6b is a washer, 6c is a nut screwed to the bolt 6a, and these constitute a part of the fixture 6.
[0012]
Next, the lock case 7 incorporating the locking / unlocking mechanism X will be described. The lock case 7 is formed in a long box shape, and is horizontally installed in the upper frame F of the door frame as described above. Here, referring to FIG. 3, 7a is a front wall, 7b is a rear wall, 7c is a left wall, 7d is a right wall, 7e is a top wall, and 7f is a bottom wall.
[0013]
By the way, as shown in FIG. 1 or FIG. 3, the front wall 7a and the rear wall 7b are appropriately formed with a plurality of opposed vertical guide elongated holes 11, 12, 13 and shaft holes 14, 15, respectively. Has been.
[0014]
Accordingly, reference numeral 11 denotes a first vertical guide slot formed in a portion of the lock case 7 near the right side wall 7d. The first vertical guide slot 11 has a slightly arc shape or an arc-shaped portion. The latch 50 is guided through the first vertical guide slot 11. A horizontal shaft 16 as a guide member is horizontally mounted. Reference numeral 12 denotes a second vertical guide slot located on the left side of the first vertical guide slot. The second vertical guide slot 12 is a follower that moves backward in the lock case 7 together with a latch 50 as a driver. The short axis (projection axis) 76 of the (trigger) 70 is engaged.
[0015]
Reference numeral 13 denotes a third vertical guide slot located on the left side of the second vertical guide slot 12. The third vertical guide slot 13 is a latch that guides the latch 50 in the vertical direction along with the horizontal axis. The protrusion shaft 60 is engaged. Reference numeral 14 denotes a first shaft hole formed near the center of the lock case 7, and a shaft (projection shaft or horizontal shaft) 17 that pivotally supports the rotation lock member is engaged with the first shaft hole 14. To do. Further, reference numeral 15 denotes a second shaft hole located between the first shaft hole 14 and the third vertical guide long hole 13, and the detection means is turned “ON” in the second shaft hole by the backward movement of the follower (trigger). The supporting shaft 18 that pivotally supports the pressing piece 82 is engaged.
[0016]
A long plate-like mounting plate 19 forming a part of the lock case 7 is fixedly provided on the lower surface of the bottom wall 7f, and a front plate 21 is integrated with the mounting plate 19 via a fixing tool 20. Installed. Both end portions of the front plate 21 and the mounting plate 19 protrude from the left and right side walls 7c and 7d of the lock case 7, respectively, and the vertical guide elongated holes 11, 12, and 14 are provided at portions from the right end portion of each plate. A latch through hole 22 is formed in consideration of the position.
[0017]
Next, each member which comprises the locking / unlocking mechanism X is demonstrated. This locking / unlocking mechanism X uses the movement of a drive body (latch) 50 that can be rotated and moved in the vertical direction and a follower body (trigger) 70 that is retracted into the lock case 7 by the backward movement of the drive body. In the embodiment, a plurality of signal detection means 80 and 81 for detecting that the sliding door 1 is completely closed are provided.
[0018]
First, as shown in FIG. 5, 30 is a solenoid as an example of a drive source. The solenoid 30 is installed in the lock case 7 and is connected to the control device via a connection cord (not shown). 31 is an operating rod of the solenoid 30, and this operating rod 31 expands and contracts in the horizontal direction. In this embodiment, the operating rod 31 contracts when energized, while it expands when not energized. And the drive pin 33 protrudes in the horizontal direction which cross | intersects an operating rod at the protrusion front-end | tip part of the operating rod 31. FIG.
[0019]
Next, reference numeral 35 denotes a rotation lock member that is pivotally supported by the lock case 7 via the shaft 17 so as to be rotated by the expansion and contraction of the operating rod 31. The rotation lock member 35 is unlocked via the drive pin 33 in the locking direction (clockwise) for preventing the rotation of the latch when the operating rod 31 contracts, and on the other hand, the unlocking for allowing the rotation of the latch when the operating rod 31 is extended. Rotate in each direction (counterclockwise). 5, the rotation lock member 35 basically includes a pair of front and rear opposed bearing plates 36 and a connecting plate 37 that couples the pair of front and rear opposed bearing plates 36 at a position above the operating rod 31. It consists of.
[0020]
Thus, the lower end portion of the opposed bearing plate 36 has an inverted U-shaped cutout portion 38 that extends downward to engage with the operating rod 31 and engages with the drive pin 33. Further, a protrusion 39, which is a part of the connecting plate, is formed on the left side of the upper end portion of the counter bearing plate 36. The protrusion 39 is fixedly disposed on the inner wall surface of the upper wall 7e. And push-type contact. The first detecting means 40 detects the locking / unlocking signal of the locking / unlocking mechanism X when the rotation lock member 35 is rotated by the expansion / contraction movement of the operating rod 31 of the solenoid 30.
[0021]
In addition, a lock arm portion 41 having a slightly wider width is formed to protrude from a portion near the upper right end portion of the counter bearing plate 36, and the lock arm portion 41 contacts the vertical contact surface 61 a of the latch located in the lock case 7. A horizontal roller 42 is pivotally supported. The rotation lock member 35 is always urged in the unlocking direction (counterclockwise) by an unlocking spring 44 wound around the shaft 17.
[0022]
Next, a description will be given of the latch 50 that protrudes from the latch through hole 22 of the lock case 7 so as to advance and retract. In the present embodiment, the latch 50 functions as a driving body in relation to the driven body (trigger) 70. Moreover, the function as a stopper is exhibited in relation to the engaging piece 5 of the sliding door 1. Further, in relation to the plurality of detecting means 80 and 81, it is used for detecting a signal indicating whether or not the sliding door 1 is completely closed.
[0023]
The latch 50 will be described with reference to FIGS. 3, 6, 10, etc., and 51 is a vertical locking surface protruding from the lock case 7. The vertical locking surface 51 is in surface contact with the central lower vertical surface 72 of the follower 70 having the crank-shaped front and rear walls 71, 71 and can engage with the upper end portion 5b of the sliding piece 5 on the sliding door side. is there.
[0024]
Reference numeral 52 denotes a tapered sliding contact surface provided continuously from the lower end edge of the vertical locking surface 51 to the rear. The tapered sliding contact surface 52 is in sliding contact with the engagement piece 5 on the sliding door side. Reference numeral 53 denotes a rear continuous portion that is connected to the tapered sliding contact surface 52 in a slightly arc shape and is loosely fitted to the latch through hole 22. Reference numeral 54 denotes a curved or protruding portion that is continuously connected to the rear continuous portion 53 and the upper wall 55 that is always located in the lock case 7, and this protruding portion 54 forms a part of a front wall that will be described later in this embodiment. The movable contact piece 80a of the detection means 80 is in contact with the movable contact piece 80a. The shape of the protrusion 54 can be arbitrarily changed, for example, it can be formed wide.
[0025]
Reference numeral 56 denotes a tapered wall. The tapered wall 56 is provided with a shaft tube portion 56a in the lateral direction.
[0026]
Reference numeral 57 denotes a front and rear side wall formed in a pistol shape as a whole. The front and rear side walls 57 include a shaft hole 58 for the horizontal shaft 16 that engages with the first vertical guide elongated hole 11 of the lock case 7 described above, and a follower. A projection-like short support shaft 59 that receives a horizontal plane 73 that extends in a direction intersecting with the central lower side vertical surface 72 of the center 70 and a projection shaft 60 that engages with the third vertical guide long hole 13 of the lock case 7 are formed appropriately. Has been.
[0027]
Reference numeral 61 denotes a contact portion that is formed in a protruding shape at the tip of the upper wall 55 and has a vertical contact surface 61 a that contacts the horizontal roller 42 of the rotation lock member 35.
[0028]
Next, when the sliding door 1 is completely closed, the latch 50 is retracted into the lock case, while the sliding door 1 is automatically opened to the initial position by the spring force of the spring member 77 when the sliding door 1 is opened. The body 70 will be described.
[0029]
As shown in FIGS. 8 and 10, the follower 70 includes a front and rear wall 71 that makes a crank-like image appear, a vertical connecting plate 74 that connects a front end edge on the lower side of the front and rear wall 71, and a latch. 50 vertical locking surfaces 51 and a bottom wall 75 in sliding contact.
[0030]
Thus, a projecting short shaft 76 that engages with the second vertical guide long hole 12 of the lock case 7 is provided on the upper side of the front and rear walls 71, while the lower side of the front and rear walls 71 is driven. A support bar 78 that supports the body return spring 77 is provided in the lateral direction. One end of the follower return spring 77 directly or indirectly contacts the support shaft 18, while the other end is in pressure contact with the inner surface of the bottom wall of the follower 70. Reference numeral 79 denotes a latch return spring provided in the lock case 7 near the right side wall 7d via a fixing rod 79a. One end of the latch return spring 79 hits the horizontal shaft 16 of the latch, and the other end. Is in pressure contact with the inner wall surface of the lock case 7.
[0031]
Next, a plurality of detection means 80 and 81 for detecting that the sliding door 1 is completely closed using the movement of the driving body (latch) 50 and the driven body (trigger) 70 will be described. Referring to FIG. 3, in this embodiment, a total of three detection means 40, 80, 81 are fixedly disposed in the lock case 7, but the first detection means 40 is a locking / unlocking mechanism as described above. The second detecting means 80 and the third detecting means 81 are for detecting a signal indicating whether or not the sliding door 1 is completely closed, while detecting the X unlocking / unlocking signal.
[0032]
Thus, in the present embodiment, the second detection means 80 has a movable contact piece 80a that comes into contact with the protruding rear wall 54 of the latch 50, and is located at a position near the right side wall 7d in the lock case 7. . As shown in FIG. 3, the second detection means 80 is “ON” when the latch 50 is in the initial position from the lock case 7 due to the spring force of the return spring 79 for latching. When the sliding door side engaging piece 5 moving in the direction of arrow A (the sliding door closing direction) moves back into the lock case 7 against the spring force of the return spring 79, it is “OFF”. The movable contact piece 80a is swingable with a base end pivotally supported by the detector body.
[0033]
Further, the third detecting means 81 has a bar-like movable element 81a in contact with a bent thumb-like pressing portion 82a of a pressing piece 82 that is in sliding contact with the connecting plate 74 of the follower 70 in this embodiment, 7 is located at a substantially central portion. When the follower 70 is retracted into the lock case 7 via the backward movement of the latch 50, the third detecting means 81 is turned “ON” via the pressing piece 82, while FIG. 3 (in the case where the sliding door is opened). As shown in FIG. 5, when the follower return spring 77 returns to the initial position by the spring force, it is “OFF”.
[0034]
The bar-shaped movable element 81a that can move in the horizontal direction is always urged in the direction of the sliding body 70 by a spring built in the detector body, and its protruding head is in contact with the pressing portion 82a of the pressing piece 82. It touches.
[0035]
First, FIG. 12 is an explanatory diagram of the latch 50 when the sliding door 1 is moved in the opening direction B from the closed state when the solenoid 30 is in a non-energized state. When the solenoid 30 is in a non-energized state, not only during a power failure, but in the case of an emergency such as a fire, the control is performed by the remote control device. At this time, the operating rod 31 of the solenoid 30 is extended by the spring force of the spring 44 that urges the rotation lock member 35 in the unlocking direction. That is, when the rotation lock member 35 is rotated counterclockwise about the shaft 17 by the spring force of the spring 44, the operating rod 31 is extended, and the horizontal roller (shaft) 42 of the rotation lock member 35 is The latch 50 is released from the rotation lock member 35 by disengaging from the contact portion 61.
[0036]
Therefore, when the sliding door 1 is moved in the opening direction B as shown in FIG. 12, the upper end portion 5b of the engagement piece 5 is in contact with the vertical locking surface 51 of the latch. Rotate counterclockwise. At this time, the latch 50 rotates against the spring force of the return spring 79. When the latch 50 rotates by a predetermined amount as the engagement piece 5 moves, the engagement state between the latch 50 and the engagement piece 5 is canceled, and therefore the sliding door 1 can be completely opened.
[0037]
In this case, the second detection means 80 is turned off when the projection of the latch 50 or the rear wall 54 is once separated from the second detection means 80 depending on the design. The third detection means 81 is returned to the initial position by the spring force of the return spring 77 when the follower 70 is released from the engagement piece 5 while being returned to the initial position due to the spring force. Therefore, it is “OFF”.
[0038]
Therefore, in such a case, both detection signals composed of the combination of the second detection means 80 and the third detection means 81 can be handled as the sliding door 1 being open.
[0039]
Next, FIG. 13 is an explanatory view when the solenoid 30 is energized when the sliding door 1 is opened to some extent. When the solenoid 30 is energized, the latch 50 of the locking / unlocking mechanism X of the present invention is completely locked against the force in the opening direction B of the sliding door 1, but retracts in the closing direction A of the sliding door 1. Is possible. Thus, when the solenoid 30 is energized, the operating rod 31 contracts against the spring force of the spring 44 that biases the rotation lock member 35. When the operating rod 31 contracts, the rotation lock member 35 rotates clockwise about the shaft 17 as a fulcrum. Then, the horizontal roller 42 of the rotation lock member 35 comes into contact with the contact portion 61 of the latch 50, thereby preventing the rotation of the latch 50.
[0040]
Therefore, when the sliding door 1 is to be completely closed and the sliding door 1 is moved from the open position to the closing direction A as shown in FIG. 14, the upper end portion 5 b of the engagement piece 5 on the sliding door 1 side is first tapered. The latch 50 hits the sliding contact surface 52 and moves backward into the lock case 7. At this time, the latch 50 is guided in the plurality of vertical guide holes 11 and 13 and retracts straight as it is against the spring force of the return spring 79. At this time, the second detection means 80 is temporarily turned “OFF” by the backward movement of the latch 50. On the other hand, the follower 70 is pulled into the lock case 7 by the support shaft 59 of the latch 50. At this time, the follower 70 is guided to the second vertical guide elongated hole 12 of the lock case 7 through the short shaft 76, and retracts straight along with the latch 50 against the spring force of the return spring 77. Then, the third detection means 81 is turned “ON” by the backward movement of the driven body 70 via the pressing piece 82.
[0041]
Next, when the sliding door 1 is completely closed, the follower 70 is supported by the upper end portion 5b of the engagement piece 5 as shown in FIGS. Therefore, the return spring 79 returns to the initial position. Then, the second detection means 80 becomes “ON” by the advancement of the latch 50. Therefore, in this case, the detection signal composed of the combination of the “ON signal” of the second detection means 80 and the “ON signal” of the third detection means 81 can be handled as the sliding door 1 being completely closed. it can.
[0042]
【Example】
First, in the embodiment of the present invention, a micro switch is used as an example of the first to third detection means 40, 80, 81. In the lock case 7, the guide portion for guiding the latch 50 in the vertical direction may be a vertical guide groove. Further, if one guide portion that slides directly or indirectly with the inner wall of the lock case is formed on the latch 50 side, the latch 50 can be rotated and moved up and down via the lock case 7 via at least one guide portion 13. It may be supported by the shaft.
[0043]
The third detecting means 81 for detecting the backward movement of the follower 70 detects the signal through the pressing piece 82, but it is not always necessary to use the pressing piece 82 indirectly. Similarly to the two detecting means 80, a detecting means having a movable contact piece may be used to directly detect the backward movement signal of the driven body 70. Further, the pressing piece 82 may be omitted by forming the projecting head of the bar-shaped movable element 81a movable in the horizontal direction in a mushroom shape or a conical shape.
[0044]
Further, the latch engagement member 3 has an engagement piece 5. However, the engagement piece 5 does not necessarily need to be adjustable, and if it is adjustable as in this embodiment, It is possible to change the design as appropriate, such as by forming an adjustment vertical slot.
[0045]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) A plurality of detecting means 80 and 81 are provided in the lock case 7, and the latch 50 is moved forward and backward in sliding contact with the latch engaging member 3, and the follower 70 is retracted into the lock case by the latch. It is possible to detect that the sliding door 1 is completely closed by using the movement. Therefore, it is possible to eliminate management problems in nursing homes and hospitals.
(2) An effective or reliable door closing signal can be taken out in the sliding door electric lock.
(3) The invention according to claim 2 can detect a signal only by advancing and retracting one member (latch).
(4) According to a third aspect of the invention, the follower 70 has a wall 71 of the front and rear, are assembled aligned so as to be supported on a support shaft 59 provided in the side wall 57 of the front and rear latch 50 of the latch Therefore, even if a plurality of detection means are provided in the lock case in order to detect the closing signal, it is possible to satisfy the demand for downsizing the lock case.
(5) The invention according to claim 4 can reliably detect the backward movement signal of the driven body 70.
(6) The invention according to claim 5 can arbitrarily set the protruding amount of the engagement piece of the latch engagement member attached to the sliding door side.
[Brief description of the drawings]
1 to 15 are explanatory diagrams for explaining embodiments of the present invention.
FIG. 1 is an explanatory view when viewed from the front in a state where a sliding door is completely closed.
FIG. 2 is an explanatory view when viewed from the right side in FIG. 1;
FIG. 3 is an explanatory diagram of a main part (locking / unlocking mechanism X).
FIG. 4 is a perspective view of a main part (latch engagement member).
FIG. 5 is an exploded perspective view of a main part (drive source, rotation lock member).
FIG. 6 is a perspective view of a latch.
FIG. 7 is a schematic explanatory view of a latch (viewed from the right side).
FIG. 8 is an explanatory diagram when viewed from the front of the driven body.
FIG. 9 is an explanatory diagram when viewed from the right side of the driven body.
FIG. 10 is an explanatory view showing the relationship between members (lock case, latch, follower, engagement piece, etc.).
FIG. 11 is a partially enlarged explanatory view of the main part in FIG. 3;
FIG. 12 is a schematic explanatory view showing the movement of the latch when the latch is released from the rotation lock member and the sliding door is pulled in the opening direction.
FIG. 13 is an explanatory diagram when the sliding door is opened and the solenoid is energized.
FIG. 14 is a schematic explanatory view showing the movement of the latch and the follower when the sliding door is moving in the closing direction.
FIG. 15 is a schematic explanatory view showing a locked state and a state in which the sliding door is completely closed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sliding door, 2 ... Upper arm, 3 ... Latch engagement member, 4 ... Support box, 5 ... Engagement piece, 6 ... Fixing tool, 7 ... Lock case, 11, 12, 13 ... Vertical guide long hole, 14, DESCRIPTION OF SYMBOLS 15, 58 ... Shaft hole, 16 ... Horizontal shaft, 17 ... Shaft, 18 ... Support shaft, 21 ... Front plate, X ... Locking / unlocking mechanism, 30 ... Drive source, 31 ... Actuation rod, 33 ... Drive pin, 35 ... Time Dynamic locking member 36 ... Opposite bearing plate 37 ... Vertical coupling plate 38 ... Notch 39 39 Protrusion 40 First detection means 41 Lock arm 42 42 Horizontal roller 50 Latch 51 Vertical locking surface, 52 ... Sliding contact surface, 54 ... Protruding rear wall, 55 ... Upper wall, 56 ... Notch portion, 57 ... Front and rear side walls, 60 ... Protrusion shaft, 61 ... Abutting portion, 70 ... Following body, 71 ... Front and rear walls, 73 ... Horizontal plane, 74 ... Connecting plate, 76 ... Short axis, 77, 79 ... Return spring, 78 ... Support bar, 80 ... Second detection hand , 81 ... third detecting means, 82 ... pressing piece, A ... closing direction, B ... open direction.

Claims

A lock engaging / unlocking mechanism X including a latch engaging member 3 attached to the sliding door 1 side and a latch 50 engaged with and disengaged from the latch engaging member 3 in a sliding contact state , and provided on the door frame side. In the sliding door electric lock comprising the case 7, the locking / unlocking mechanism X includes a rotation lock member 35 pivotally supported on the lock case 7 so as to be rotated by the expansion and contraction of the operating rod 31 of the drive source 30. The latch 50 is pivotally supported by the lock case 7 so as to be able to rotate and move up and down so as to be locked by the rotation lock member 35, and is always urged in the advancing direction by a latch return spring 79, and a sliding door. When the door is opened, it advances from the lock case 7 together with the latch. On the other hand, when the sliding door is moved in the completely closing direction, the follower retracts into the lock case 7 through the latch and against the spring force of the return spring 77. 70, drive the driven member 70 and the A sliding door electric device comprising a plurality of detecting means 80 and 81 disposed in the lock case 7 to detect that the sliding door 1 is completely closed by utilizing the forward and backward movement of the latch 50 as a body. Tablets.

In claim 1, the follower 70 has a wall 71 of the front and rear, Serare combined so as to be supported on a support shaft 59 of the latch 50, and vertically guiding portion 12 of the lock casing 7 via a shaft An electric lock for sliding doors characterized by being guided in a direction.

The latch 50 includes a vertical locking surface 51 that engages with the latch engaging member 3, and a rear end from the lower end edge of the vertical locking surface 51. A tapered sliding contact surface 52 that contacts, a protruding rear wall 54 that is connected to the tapered sliding contact surface 52 and contacts one detecting means 80 in the lock case 7, and a guide portion of the lock case. An electric lock for sliding doors, comprising front and rear side walls 57 and an upper wall 55 having a contact portion 61 that contacts the rotation lock member 35.

In claim 1, one detection means 80 among the plurality of detection means is provided so as to be able to contact the rear protrusion 54 of the latch 50, and the other one detection means 81 is provided on the follower 70. The sliding door is arranged near the through hole 22 for latching of the lock case 7 so as to face, and is in contact with the driven body 70 through a pressing piece 82 pivotally supported in the lock case 7. Tablets.

And have at to claim 1, the latch engagement member 3 is provided with a supporting box 4 mounted embedded manner on stiles 2 of the sliding door 1, the lower end portion 5a slidably decorated vertically on the supporting box 4 On the other hand, the upper end portion 5b protruding from the support box is engaged with the latch 50, and the engagement piece 5 is set to the support box 4 after the amount of protrusion of the engagement piece 5 is arbitrarily set. An electric lock for sliding doors, characterized by comprising a fixture 6 for fixing.