JP4368565B2

JP4368565B2 - Stopper mechanism for reverse latch of lock

Info

Publication number: JP4368565B2
Application number: JP2002267479A
Authority: JP
Inventors: 中村達哉
Original assignee: 美和ロック株式会社
Priority date: 2002-09-13
Filing date: 2002-09-13
Publication date: 2009-11-18
Anticipated expiration: 2022-09-13
Also published as: JP2004100401A

Description

【０００１】
【発明の属する技術分野】
本発明は、錠前の反転ラッチ用ストッパー機構に関する。
【０００２】
【従来の技術】
錠前用ラッチの係止解除機構又は係止機構に関する実施例は、例えば先願の特願２００１−３３４２５８号に記載されている（現在、未公開の出願中）。この実施例は、錠箱内に軸支され、かつ、上方の第１受部と下方の第２受部とを有する駆動部材と、この駆動部材とラッチとの間に位置するように錠箱内に軸支され、かつ、先端部側にラッチの後端部側と係脱する突起状の係止部を有すると共に、後端部側の立ち上がり部に前記駆動部材に設けた押圧部と摺接する摺接部分を有する係脱部材（ラッチ係止部材）とから構成されている。
【０００３】
この錠前用ラッチの係止機構は、扉の閉戸時、錠ケース内のラッチバネのバネ力により突出したラッチを、サムターン等の操作部材の操作によって駆動する駆動部材を介し、従動部材としてのラッチ係止部材をラッチに係合する方向へと回転させる。このラッチの係止機構は、閉戸時、ラッチの後退を阻止する第１次的なストッパー（ロック手段）の役割を果す。
【０００４】
ところで、現在、操作部材、駆動部材、従動部材というような順序によらず、これとは別に、又はこの第１次的なラッチ用ストッパー機構に加味し、デッドボルトの後退動を利用した錠前のラッチ用ストッパー機構の出現が要望されている。何故ならば、デッドボルトの後退動に追従して自動的にラッチの係止が解除され、又はラッチを係止することができれば、非常に便利であると共に、錠前の構造如何によってはラッチを二重にストッパー（二重ロック）することができるからである。
【０００５】
【発明が解決しようとする課題】
本発明の第１の目的は、デッドボルトの後退動に追従して自動的にラッチの係止が解除され、又はラッチを係止することができる新規なラッチ用ストッパー機構を提案すること。第２の目的は、部品点数を増やさないで第１の目的を達成することができること。第３の目的は、ラッチを二重にストッパー（二重ロック）することができること。第４の目的は、各部材を合理的に組み合わせ、錠ケースの内部空間を有効的に活用することである。
【０００６】
【課題を解決するための手段】
本発明の錠前の反転ラッチ用ストッパー機構は、扉の閉戸時、錠ケース３の反転ラッチ支持枠５３内の反転ラッチバネのバネ力５６により突出した反転ラッチ５が、該錠ケース内に回動自在に軸支された反転ラッチストッパー８０によりロック状態に係止される錠前の反転ラッチ用ストッパー機構であって、前記錠ケース３は、取付け台座型であり、前記扉１の内側に面付け状態に取付けられ、また、該錠ケース３内には、少なくともダルマ６１、デッドボルト６２、反転ラッチストッパー８０、反転ラッチ係止部材４０の各部材をサンドイッチ状に組み込んだ板状第１支持体３０と板状第２支持体３１とが固定的に設けられ、前記反転ラッチストッパー８０は、デッドボルト６２と反転ラッチ５との間に支軸８２を介して回転自在に配設されていると共に、デッドボルトの解錠時にダルマ６１が回転してデッドボルト６２が錠ケース３内に後退すると、該反転ラッチストッパー８０が反転ラッチストッパー用バネ８１のバネ力に抗して係止解除の方向へ回転するように該デッドボルトのデッド係合部７５に押される受け部８６を有し、一方、デッドボルトの施錠時に前記ダルマ６１が回転してデッドボルト６２が錠ケース３から突出すると、前記バネ８１のバネ力により該反転ラッチストッパー８０が係止方向に回転して反転ラッチ５の上下方向の一方の係合受け部５ｃに係合するストッパー部８５を有し、さらに、反転ラッチ支持枠５３の外側には固定軸５０を介して反転ラッチ係止部材４０が回転自在に配設され、該反転ラッチ係止部材４０は、扉の閉戸時、付勢バネ５１のバネ力により回転し、その係止部４５が前記反転ラッチ５の上下方向の他方の係合受け部５ｃに係合することを特徴とする。
【０００７】
上記構成に於いて、反転ラッチストッパー８０は、錠ケースに軸支された環状部８３と、この環状部８３の下部側に設けられ、かつ、錠ケース内に固定された反転ラッチ支持枠５３の水平上板５３ｂに当接可能な当り部８４と、この当り部８４によりも下方に延伸し、かつ、前記反転ラッチ支持枠を貫通して反転ラッチ５の上方の係合受け部５ｃと係脱するストッパー部８５と、一方、このストッパー部８５とは逆方向に延伸し、かつ、デッドボルト６２の後退時に該デッドボルトの下部に押される受け部８６とから成ることを特徴とする。
【０００８】
【発明の実施の形態】
図１乃至８図は、本発明の一実施例を示す各説明図である。図１は本発明の実施環境を示す平面からの説明図である。図１では本発明に使用されている反転ラッチの一例を斜視図で示す。
【０００９】
まず、図１を参照に説明する。１は水平方向に開閉する扉である。扉１は、例えばアルミ型材の門扉であり、該門扉１の取付け端部は塀間に設けた柱に枢着されている。もちろん、扉１は躯体（建物）の玄関口に設けたものであっても良く、門扉に限らない。
【００１０】
２は錠前の一例としてのプッシュプル錠で、このプッシュプル錠２は扉１の開閉端部の適宜箇所に取付けられている。プッシュプル錠２は、普通一般に扉１の内外に取付けられるが、本実施例では、図１で示すように、扉１の内側に面付け状態に取付けられている一例を示す。
【００１１】
３は錠ケースで、この錠ケース３の一側壁にプッシュプル方式の板状把手４が取付けられている。５は反転ラッチで、この反転ラッチ５は対向する扉６或いは躯体に設けられた受け具（例えばトロヨケ，ストライク）７に係脱する。８は把手を貫通して錠ケース３に取付けられたサムターンである。
【００１２】
ここで反転ラッチ５の構成について説明する。５ａはストライク７ａの開口縁と摺接する垂直状態の衝止面である。５ｂ，５ｂは、反転ラッチ５の菱形状上下面からそれぞれ突出する突起軸で、これらの突起軸は反転ラッチが水平状態で回転する際、回転軸の機能を果す。５ｃ，５ｃは反転ラッチの二股状の後端部に突設する係合受け部で、本実施例では上方の係合受け部５ｃは、施錠時における反転ラッチ或いは後退防止用ストッパー（以下、ここでは「反転ラッチストッパー」と称する。）と係合し、一方、下方の係合受け部５ｃは、同じく施錠時における反転ラッチの反転或いは後退防止用係止部材（これも反転ラッチストッパーであるが、以下、ここでは両者を区別する意味で「反転ラッチ係止部材」と称する）と係合する機能を有する。
【００１３】
５ｄは反転ラッチの後端部に形成された反転ラッチバネ用の収納切欠部で、この収納切欠部５ｄには、例えばバネ受板が入り込んでいる。５ｅは衝止面５ａと鋭角（例えば４８度）で交差する当接斜面で、この当接斜面５ｅは扉閉戸時にストライク７ａの他方の縁部に当接すると、反転ラッチ５が後退しながら反転方向に回転するのを許容する。
【００１４】
なお、本実施例では、説明の便宜上、前記突起５ｂ，５ｂを基準として前側を反転ラッチの先端部、後側を反転ラッチの後端部として説明するが、反転ラッチの先端部と反転ラッチの後端部とをそれぞれ別体に設計変更し、反転ラッチの後端部を反転ラッチに連動するスライダー部材にしても良い。
【００１５】
本発明が錠前の反転ラッチ用ストッパー機構であることから、反転ラッチ５或いはスライダー部材は、反転ラッチストッパーとの関係で、一つ又は２つ以上の係合受け部５ｃを有することが必要である。
【００１６】
次に図２を参照に本発明の関連部材について説明する。把手４には、同一構成の上下の軸受け部材１１，１１Ａが所要の間隔を有して対設されている。そして、上方の軸受け部材１１にはバネ受け部材１５が、一方、下方の軸受け部材には反転ラッチ係止部材用駆動部材１６がそれぞれ一体的に固設されている。
【００１７】
軸受け部材１１，１１Ａは、把手４のサムターン取付け孔９を基準にして把手の内壁面４ａの上下に突出されている。ブロック形状の軸受け部材１１，１１Ａは、錠ケース３の膨出部３ａに形成された上下の嵌合凹所１２，１２Ａにそれぞれ嵌入する上下の軸受け補助板１３，１３Ａを介して錠ケース３に取付けられている。
【００１８】
本実施例では、把手４は軸受け部材１１，１１Ａに形成された長軸孔並びに前記軸受け補助板１３，１３Ａに形成された軸孔にそれぞれ貫通状態に嵌挿された上下の縦軸１４，１４Ａを介し錠ケース３に枢着されている。図２を参照にすると、１５は上方の軸受け部材１１に固定されたバネ受け部材である。一方、１６は下方の軸受け部材１１Ａに固定された駆動部材である。バネ受け部材１５と駆動部材１６は共にキープレート形状をしている。
【００１９】
ここで図５を参照にして反転ラッチ係止部材に関連する駆動部材１６について説明する。駆動部材１６は、幅広基部１７と、この幅広基部１７の先端縁の中央部から水平方向にバー状に延びた駆動アーム部１８とから成り、前記幅広基部１７の中央部には短い軸孔１９が形成され、この短軸孔１９の左右に固着具用の取付け孔が形成されている。この点バネ受け部材１５も同様である。また、ここで図５を参照にして反転ラッチ係止部材に関連する下方の軸受け補助板１３Ａについても説明する。上下の軸受け補助板１３，１３Ａも同一の構成である。
【００２０】
下方の軸受け補助板１３Ａは、垂直板部２１と、この垂直板部２１の上下端部を対向状態に折り曲げ形成した軸受け板部２２，２２とから成り、前記垂直板部２１の下部（引っ繰り返した時は下部）には、駆動部材１６の駆動アーム部１８が貫通する水平案内長孔２３が形成され、この水平案内長孔２３の上方には合計２個の固着具用の貫通孔２４が形成されている。
【００２１】
また軸受け板部２２，２２の中央部には軸孔２５，２５がそれぞれ形成されている。上下の縦軸１４，１４Ａは、本実施例では少なくとも軸受け補助板１３Ａ（１３）の上下の軸孔２５，２５にそれぞれ嵌め込まれる。なお、前記バネ受け部材１５のアーム部１８Ａは錠ケース３のバネ収納部内に設けられた把手復帰用バネ２６に当接している（図２参照）。また、バネ受け部材１５、駆動部材１６は図示しない固着具を介して対応する軸受け部材１１，１１Ａの一側面にそれぞれ固着されている。
【００２２】
図５を中心に反転ラッチ係止部材４０に関連する各部材について説明する。前述した駆動部材１６と、この駆動部材によって回転する係合板２８と、この係止板と連動する作動カム３２と、この作動カムによって係合解除方向に反転ラッチバネ５６のバネ力に抗して回転する反転ラッチ係止部材４０は、第１次的に反転ラッチの係止解除機構を構成する。換言すれば、これらの各部材の作動態様が逆になると、反転ラッチ５は反転ラッチ係止部材４０に係止されるので、見方を変えると、駆動部材１６、係止板２８、作動カム３２、反転ラッチバネ５１、反転ラッチ係止部材４０は、一つの反転ラッチストッパー機構を構成する。
【００２３】
そこで、駆動部材１６によって回転する係合板２８と、該係合板によって同方向に回転する作動カム３２について説明する。円形の係合板２８は、錠ケース３の円形嵌合溝状の案内部に回転自在に嵌め込まれている。また係合板２８は、周縁部の一部に切欠部２８ａを有すると共に、一側面から水平方向に突出する角型の水平作動軸２９を備えている。駆動部材１６の駆動アーム１８は、下方の軸受け補助板１３Ａの水平案内長孔２３等を貫通した状態で係合板２８の切欠部２８ａに係合している。
【００２４】
係合板２８と一体の作動軸２９は、錠ケース３の第１・第２支持体３０，３１に軸支された内側作動カム３２の筒状部３３の角孔３４に嵌入している。作動カム３２は、図４で示すように反転ラッチ支持枠５３の背板５３ａと腕状の反転ラッチ係止部材４０との間に配設されている。
【００２５】
しかして、作動カム３２は、筒状部３３の外周壁から上方に突起（指）状に延びた第１係合部３５と、この第１係合部３５の下部ないし筒状部の外周壁の一部に突起状に連設する第２係合部３６とを有している。
【００２６】
４０は錠ケース３内の第１・第２支持体３０，３１に横設軸架された固定軸５０に軸支された腕状或いはアングル状の反転ラッチ係止部材４０である。反転ラッチ係止部材４０は、基本的には左右一対の腕状係合板４１，４１と、腕状係合板４１，４１の先端部側下部を連結する或いは連設する板状連結部４２とから成る。
【００２７】
本実施例に関係があるのは、一方（図５で言えば左側）の腕状係合板４１のみである。他方の腕状係合板４１は、外側用作動カム３２Ａと関係する。しかして、反転ラッチ係止部材４０は、中央部に固定軸用の軸孔４３を有し、この軸孔４３を基準にして水平方向に延びる水平腕部４４の先端部には、反転ラッチ５の下方（他方）の係合受け部５ｃと係脱する左右一対の係止部４５，４５が突出形成されている。また軸孔４３を基準にして垂直方向に延びる垂直腕部４６の上端部には、左右一対の平面Ｌ型状及び平面逆Ｌ型状第１被係合部４７，４７が折り曲げ形成されている。
【００２８】
さらに、前記水平腕部４４の後端部（軸孔４３付近）上面には、作動カムの第２係合部３６と係合する受板状の第２被係合部４８が設けられている。反転ラッチ係止部材用付勢バネ５１は固定軸５０に巻装され、反転ラッチ係止部材４０の係止部（先端部）４５が反転ラッチ５の下方の係合受け部５ｃに係合するように常時付勢する。
【００２９】
ここで、図４を参照にして反転ラッチ支持枠５３について説明する。反転ラッチ支持枠５３は、断面コ字型状に形成され、錠ケース３のフロント（前板も含む）５４に形成した開口５５に向かって固定的に配設されている。反転ラッチ支持枠５３内には、反転ラッチバネ５６が設けられている。反転ラッチバネ５６の先端部は反転ラッチ５の後端部に直接又は間接的に圧接し、一方、バネの後端部は反転ラッチ支持枠５３の背板５３ａの内壁面に圧接している。
【００３０】
また反転ラッチ支持枠５３内には、反転ラッチ５の後端部が位置し、その下方係合受け部５ｃは、反転ラッチ支持枠５３の水平下板５３ｂに反転ラッチの後退方向に一部形成した反転ラッチ係止部材用切欠部（下方切欠部）５７に臨んでいる。一方、反転ラッチ５の上方（一方）の係合受け部５ｃは、反転ラッチ支持枠５３の水平上板５３ｂに反転ラッチの後退方向に一部形成した反転ラッチストッパー用切欠部（上方切欠部）５８に臨んでいる。さらに、反転ラッチ支持枠５３の先端部内には反転ラッチ５の突起軸５ｂ，５ｂが位置している。したがって、反転ラッチ５は反転ラッチ支持枠５３の前記水平下板５３ｂと水平上板５３ｂに支持さている。
【００３１】
ここで、図２に仮想線で示すように、錠ケース３に内装される第１支持体３０と第２支持体３１について簡単に説明する。第１支持体３０は把手用取り付け台座型の錠ケース３の肉厚部３ａの内壁面に固定される。第１支持体３０は上端部を適宜に折り曲げた板状体であり、いわゆるケース身的機能を発揮する。一方、第２支持体３１は第１支持体３０に所要間隔を有して対向し、いわゆるケース蓋的機能を発揮する。本実施例では、駆動部材１６及び係合板２８を除き、以下に説明するダルマ、デッドボルト、反転ラッチストッパーなど各部材が取付けられている（図３、図６を参照）。
【００３２】
図２乃至図８を参照に本発明の主要部について説明する。なお、本発明の特定事項に関係のない構成部分については詳細な説明を省略する。
【００３３】
６１はサムターン等の操作によって回転するダルマ（デッドボルト用駆動体）、６２はデッドボルト（第１施錠片）、６３はデッドボルトに組み合わせられた鎌片（第２施錠片）、６４はデッドボルト付勢用のデッドバネである。
【００３４】
まずこれらの部材を簡単に説明する。ダルマ６１は第１支持体３０の嵌合軸孔６５に回転自在に嵌合する。ダルマ６１の駆動腕６６はデッドボルト６２の後端部６２ａの対向切欠係合面に選択的に係合する。これによりデッドボルト６２は第１支持体３０の二つの水平案内部６７，６７にそれぞれ案内される可動軸（一つはバネ軸としての機能）６８，６８を介して水平方向に進退動する。
【００３５】
デッドバネ６４は端面Ｕ字型のデッドボルト６２に内装され、その中央部は下方のバネ軸６８に巻装されている。そして、一端部はデッドボルト６２に形成されたバネ受け部６９に、一方、その他端部はダルマ６１の駆動腕６６に段差状に連設する山形状のバネ受け部７０にそれぞれ支持されている。デッドバネ６４はデッドボルト６２と共に移動するようにデッドボルト６２に装着されているから、クリック機能を有するデッドバネ６４の他端部は常時ダルマ６１のバネ受け部７０に乗っかっている。
【００３６】
鎌片６３は、その後端部６３ａが第１支持体３０の上端部の突起軸７１に軸支されていると共に、デッドボルト６２の先端部寄りの部位に横設した係合ピン７２及び鎌片６３の中央部に形成した長孔７３を介し、デッドボルト６２に連動するように組み合わせられている。
【００３７】
したがって、鎌片６３はデッドボルト６２がフロント５４を基準に突出（進出）すると、突起軸７１を支点に回転して受け具に掛合する。これに対し、鎌片６３はデッドボルト６２が錠ケース３内に後退すると、係合ピン７２を介して係合解除の方向へと引き戻される格好となる。
【００３８】
次に反転ラッチストッパー８０、反転ラッチストッパー用バネ８１等について説明する。図６を参照にすると、反転ラッチストッパー８０はケース身的第１支持体３０の左縁寄りの部位に突設された支軸８２に回転自在に支持されている。
【００３９】
しかして、反転ラッチストッパー８０は、前記支軸８２が貫通する内外一対の環状部８３と、この環状部８３の前方側下部の一部を連結或いは連設し、かつ、反転ラッチ支持枠５３の水平上板５３ｂに当接可能な当り部８４と、この当り部８４によりも下方に延伸し、かつ、反転ラッチ支持枠５３の上方切欠部５８を貫通して反転ラッチ５の上方の係合受け部５ｃと係脱する内外のストッパー部８５と、一方、このストッパー部８５とは逆方向（上方）に延伸し、かつ、デッドボルト６２の後退時に該デッドボルトの下部に形成したデッド係合部（例えば切欠端面）７５に押される内外の指状受け部８６とから成る。
【００４０】
なお、本実施例では、反転ラッチストッパー８０は、左右勝手を考慮して形成されているので、反転ラッチ５の上方の係合受け部５ｃに係脱するのは一つのストッパー部８５（図６では手前ではなく、内側のストッパー部）である。また反転ラッチストッパー用バネ８１の中央部は支軸８２に巻装され、一端部は反転ラッチストッパー８０の当り部８４に、一方、他端部は反転ラッチ支持枠５３の水平上板５３ｂにそれぞれ支持されている。
【００４１】
次に本発明の特定要件に関連する作用について説明する。まず、反転ラッチストッパー８０と反転ラッチとの係脱について説明する。解錠時の図８で示すように、サムターンの操作により、ダルマ６１が時計方向へと回転し、その結果、デッドボルト６２が錠ケース３内に後退すると、デッドボルト６２のデッド係合部７５が反転ラッチストッパー８０の指状受け部８６に当る。この時デッドボルト６２が所定の位置まで後退すると、切欠端面７５に押された反転ラッチストッパー８０は、バネ８１のバネ力に抗してかつ支軸８２を支点にしながら係止解除の方向（時計方向）へと回転する。
【００４２】
一方、施錠時の図７で示すように、ダルマ６１が反時計方向へと回転し、その結果、デッドボルト６２が錠ケース３から進出すると、デッドボルト６２のデッド係合部７５が反転ラッチストッパー８０の指状受け部８６から離れる。この時デッドボルト６２が所定の位置まで突出すると、切欠端面７５から開放された反転ラッチストッパー８０は、そのバネ８１のバネ力によって支軸８２を支点にしながら係止方向（反時計方向）へと回転する。その結果、反転ラッチストッパー８０のストッパー部８５が反転ラッチ５の上方の係合受け部５ｃに係合する。これにより、反転ラッチ５は扉が仮に厚さ方向へガタガタ動いても、後退或いは反転方向への動きが規制される（第１の反転ラッチスッパー機能）。
【００４３】
次に図３乃至図５を参照にして反転ラッチ係止部材４０と反転ラッチ５の関係を説明する。本発明の錠前の反転ラッチ用ストッパー機構は、プッシュプル錠に適用したので、反転ラッチ５は、把手４を扉１側にプッシュ（押す操作）した場合又は把手４を扉１から離れるようにプル（引く操作）した場合に反転ラッチ係止部材４０から開放される。
【００４４】
そこで、今仮に把手４を扉１側に押した場合を前提として説明する。把手４をプッシュ（押す操作）すると、駆動部材１６は縦軸１４Ａを中心に図５の矢印Ａ方向へと水平回転する。そうすると、係合板２８は、図５の矢印Ｂ方向（時計方向）へ回転し、内側の作動カム３２は作動軸２９を介して係合板２８と同じ方向（矢印Ｃ方向）回転する。この時作動カムの指状第１係合部３５は反転ラッチ係止部材４０の上方の第１被係合部４７から離れるが、その下方の第２係合部３６は反転ラッチ係止部材４０の第２被係合部４８を押す。
【００４５】
その結果、反転ラッチ係止部材４０は固定軸５０を支点に付勢バネ５１のバネ力に抗して係合解除方向に回転する。本実施例では、一つの駆動部材１６が左右に揺動すると、一つ係合板２８及びこれに連動する一つ作動カム３２を介して１又は２以上の被係合部４７，４８を有する反転ラッチ係止部材４０が係合解除の方向へ回転する。
【００４６】
一方、扉１を閉めて把手４から手を放すと、バネ受け部材１５は把手復帰用バネ２６のバネ力により元の位置へ自動的に戻る。この時、駆動部材１６も元の位置に戻る。駆動部材１６が元の位置に戻ると、駆動部材１６、係合板２８、作動カム３２はそれぞれ前記矢印Ａ，Ｂ，Ｃとは逆方向（反時計方向）へ回転するので、反転ラッチ係止部材４０は付勢バネ５１のバネ力により、反転ラッチ５を係止する方向へと回転する。
【００４７】
その結果、反転ラッチ係止部材４０の係止部４５が反転ラッチ５の下方の係合受け部５ｃに係合する。これにより、反転ラッチ５は後退動が規制される（第２の反転ラッチストッパー機能）。それ故に、本実施例の反転ラッチ５は、施錠時、反転ラッチストッパー８０と反転ラッチ係止部材４０の二つの部材により二重ロックされる。
【００４８】
【実施例】
本発明は、施錠時、反転ラッチストッパー８０と反転ラッチ係止部材４０の二つの部材により反転ラッチを二重ロックすることも発明の目的である。
【００４９】
【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作用・効果がある。
（１）デッドボルトの後退動に追従して自動的に反転ラッチの係止が解除され、又は反転ラッチを係止することができる。
（２）部品点数を増やさないで第１の目的を達成することができる。
（３）各部材を合理的に組み合わせ、錠ケースの内部空間を有効的に活用することができる。
（４）反転ラッチを二重にストッパー（二重ロック）することができる。
【図面の簡単な説明】
図１乃至図８は本発明の一実施例を示す各概略説明図。
【図１】実施環境を平面から示した説明図（なお、反転ラッチは斜視図）。
【図２】把手を錠ケースに枢着した状態の縦概略断面説明図。
【図３】主要部の概略説明図。
【図４】要部の概略説明図。
【図５】反転ラッチ係止部材を中心とした各部材の分解斜視図。
【図６】施錠時における反転ラッチストッパーの係止状態を示す概略説明図。
【図７】反転ラッチストッパーを中心とした各部材の分解斜視図。
【図８】反転ラッチストッパーの解除状態を示す概略説明図。
【符号の説明】
１…扉，６…扉（躯体）、２…プッシュプル錠、３…錠ケース、４…把手、４ａ…内壁面、５…反転ラッチ、５ｃ…係合受け部、７…受け具、８…サムターン、１１，１１Ａ…軸受け部材、１２…上方の嵌合凹所、１２Ａ…下方の嵌合凹所、１３…上方の軸受け補助板、１３Ａ…下方の軸受け補助板、１４，１４Ａ…縦軸、１５…バネ受け部材、１６…駆動部材、１７…幅広基部、１８…駆動アーム部、１９…短軸孔、２１…垂直板部、２２…軸受け板部、２３…水平案内長孔、２５…軸孔、２６…把手復帰用バネ、２８…係合板、２８ａ…切欠部、２９…作動軸、３０…第２支持体…第２支持体、３２…作動カム、３３…筒状部、３４…角孔、３５…第１係合部、３６…第２係合部、４０…反転ラッチ係止部材、４１…係合板、４２…連結部、４３…軸孔、４４…水平腕部、４５…係止部、４６…垂直腕部、４７…第１被係合部、４８…第２被係合部、５０…固定軸、５１…付勢バネ、５３…反転ラッチ支持枠、５４…フロント、５５…開口、５６…反転ラッチバネ、５７…下方切欠部、５８…上方切欠部、６１…ダルマ、６２…デッドボルト、６３…鎌片、６４…デッドバネ、６５…嵌合軸孔、６６…駆動腕、６７…水平案内部、６８…可動軸（一つはバネ軸）、６９…バネ受け部、７０…バネ受け部、７１…突起軸、７２…係合ピン、７３…長孔、７５…デッド係合部、８０…反転ラッチストッパー、８１…反転ラッチストッパー用バネ、８２…支軸、８３…環状部、８４…当り部、８５…ストッパー部、８６…受け部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stopper mechanism for a reverse latch of a lock.
[0002]
[Prior art]
For example, Japanese Patent Application No. 2001-334258 of the prior application (currently unpublished application) describes an embodiment related to the lock release mechanism or the lock mechanism of the lock latch. In this embodiment, the lock box is pivotally supported in the lock box and has a first upper receiving portion and a lower second receiving portion, and is positioned between the drive member and the latch. A protrusion-like locking portion that is pivotally supported inside and that engages and disengages from the rear end portion side of the latch on the tip end side, and slides with a pressing portion provided on the driving member at the rising portion on the rear end portion side. It is comprised from the engagement / disengagement member (latch locking member) which has the sliding contact part which touches.
[0003]
This locking mechanism of the lock latch is a latch as a driven member via a driving member that drives a latch protruding by a spring force of a latch spring in the lock case by operating an operation member such as a thumb turn when the door is closed. The locking member is rotated in a direction to engage the latch. This latching mechanism of the latch serves as a primary stopper (locking means) that prevents the latch from retreating when the door is closed.
[0004]
By the way, now, regardless of the order of the operation member, the drive member, the driven member, etc., separately or in addition to this primary stopper mechanism for latch, The appearance of a stopper mechanism for latches is desired. This is because it is very convenient if the latch can be unlocked automatically by following the backward movement of the deadbolt, or the latch can be locked. This is because a heavy stopper (double lock) can be used.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION A first object of the present invention is to propose a novel stopper mechanism for a latch that can automatically release or lock a latch following the backward movement of a dead bolt. The second object is to be able to achieve the first object without increasing the number of parts. The third purpose is that the latch can be double-stopped (double lock). The fourth object is to rationally combine the members and effectively use the internal space of the lock case.
[0006]
[Means for Solving the Problems]
The stopper mechanism for the reverse latch of the lock according to the present invention is such that when the door is closed, the reverse latch 5 protruding by the spring force 56 of the reverse latch spring in the reverse latch support frame 53 of the lock case 3 rotates into the lock case. freely an axially supported by the inverted latching stopper mechanism of the lock to be engaged in the locked state by the inverted latch stopper 80, the lock casing 3 is mounted pedestal type, imposition state inside of the door 1 In the lock case 3, a plate-like first support 30 in which at least each of a dharma 61, a dead bolt 62, a reverse latch stopper 80, and a reverse latch locking member 40 are incorporated in a sandwich shape is provided. a plate-shaped second supporting member 31 is fixedly provided, the inverting latch stopper 80 is rotatably is arranged via a support shaft 82 between the dead bolt 62 and the inverting latch 5 At the same time, when the dead bolt 61 is rotated when the dead bolt is unlocked and the dead bolt 62 is retracted into the lock case 3, the reverse latch stopper 80 is unlocked against the spring force of the reverse latch stopper spring 81. When the dead bolt 61 is rotated and the dead bolt 62 protrudes from the lock case 3 when the dead bolt is locked. The reversing latch stopper 80 is rotated in the locking direction by the spring force of the spring 81, and has a stopper portion 85 that engages with one of the engagement receiving portions 5c in the vertical direction of the reversing latch 5; An inversion latch locking member 40 is rotatably disposed on the outside of the support frame 53 via a fixed shaft 50. The inversion latch locking member 40 is provided with a biasing spring 51 when the door is closed. Rotated by Ne force, the locking portion 45 is characterized in that it engages in the vertical direction of the other engagement receiving portion 5c of the inverting latch 5.
[0007]
In the above-described configuration, the reverse latch stopper 80 is formed by the annular portion 83 pivotally supported by the lock case, and the reverse latch support frame 53 provided on the lower side of the annular portion 83 and fixed in the lock case. A contact portion 84 that can come into contact with the horizontal upper plate 53b, and extends downward by the contact portion 84, and penetrates the reversing latch support frame and engages / disengages with the engagement receiving portion 5c above the reversing latch 5. The stopper portion 85 is characterized by comprising a stopper portion 85 that extends in the opposite direction to the stopper portion 85 and a receiving portion 86 that is pushed by the lower portion of the dead bolt when the dead bolt 62 is retracted.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
1 to 8 are explanatory views showing an embodiment of the present invention. FIG. 1 is an explanatory diagram from a plane showing an implementation environment of the present invention. FIG. 1 is a perspective view showing an example of an inversion latch used in the present invention.
[0009]
First, a description will be given with reference to FIG. Reference numeral 1 denotes a door that opens and closes in the horizontal direction. The door 1 is, for example, an aluminum-type gate, and an attachment end of the gate 1 is pivotally attached to a pillar provided in the space. Of course, the door 1 may be provided at the entrance of the housing (building) and is not limited to the gate.
[0010]
Reference numeral 2 denotes a push-pull lock as an example of a lock. The push-pull lock 2 is attached to an appropriate portion of an opening / closing end of the door 1. Push-pull lock 2, usually it is generally attached to the inside and outside of the door 1, in the present embodiment, as shown in Figure 1, an example that is attached to the imposition state inside of the door 1.
[0011]
Reference numeral 3 denotes a lock case, and a push-pull plate handle 4 is attached to one side wall of the lock case 3. Reference numeral 5 denotes an inversion latch. The inversion latch 5 is engaged with or disengaged from a counter 6 provided on the opposite door 6 or housing (for example, troyoke or strike). A thumb turn 8 is attached to the lock case 3 through the handle.
[0012]
Here, the configuration of the inverting latch 5 will be described. Reference numeral 5a denotes a vertical stop surface in sliding contact with the opening edge of the strike 7a. Projection shafts 5b and 5b project from the rhomboid upper and lower surfaces of the reversing latch 5, respectively, and these projecting shafts function as rotating shafts when the reversing latch rotates in a horizontal state. Reference numerals 5c and 5c denote engagement receiving portions projecting from the bifurcated rear end of the reversing latch. In this embodiment, the upper engaging receiving portion 5c is a reversing latch or a stopper for preventing retraction (hereinafter, referred to as the following). The lower engagement receiving portion 5c is also a locking member for preventing the reverse latch from reversing or retreating during locking (this is also a reverse latch stopper). Hereinafter, it has a function of engaging with an “inverted latch locking member” in the sense of distinguishing both.
[0013]
Reference numeral 5d denotes a storage cutout portion for a reverse latch spring formed at the rear end portion of the reverse latch. For example, a spring receiving plate is inserted into the storage cutout portion 5d. Reference numeral 5e denotes an abutting slope that intersects the stop surface 5a at an acute angle (for example, 48 degrees). When the abutting slope 5e comes into contact with the other edge of the strike 7a when the door is closed, the reversing latch 5 is retracted. Allow rotation in reverse direction.
[0014]
In the present embodiment, for convenience of explanation, the front side is described as the leading end of the inverting latch and the rear side is defined as the trailing end of the inverting latch with reference to the protrusions 5b, 5b. The rear end portion may be designed differently, and the rear end portion of the inversion latch may be a slider member interlocked with the inversion latch.
[0015]
Since the present invention is a stopper mechanism for the reverse latch of the lock, the reverse latch 5 or the slider member needs to have one or more engagement receiving portions 5c in relation to the reverse latch stopper. .
[0016]
Next, related members of the present invention will be described with reference to FIG. The handle 4 is provided with upper and lower bearing members 11, 11 </ b> A having the same configuration and having a predetermined interval. A spring bearing member 15 is integrally fixed to the upper bearing member 11, and a reverse latch locking member driving member 16 is integrally fixed to the lower bearing member.
[0017]
The bearing members 11, 11 </ b> A protrude above and below the inner wall surface 4 a of the handle with reference to the thumb turn mounting hole 9 of the handle 4. The block-shaped bearing members 11 and 11A are attached to the lock case 3 via the upper and lower bearing auxiliary plates 13 and 13A that are respectively fitted into the upper and lower fitting recesses 12 and 12A formed in the bulging portion 3a of the lock case 3. Installed.
[0018]
In this embodiment, the handle 4 has upper and lower longitudinal axes 14 and 14A inserted into a long shaft hole formed in the bearing members 11 and 11A and a shaft hole formed in the bearing auxiliary plates 13 and 13A in a penetrating state. Is pivotally attached to the lock case 3. Referring to FIG. 2, reference numeral 15 denotes a spring receiving member fixed to the upper bearing member 11. On the other hand, 16 is a drive member fixed to the lower bearing member 11A. Both the spring receiving member 15 and the driving member 16 have a key plate shape.
[0019]
Now, the drive member 16 related to the reverse latch locking member will be described with reference to FIG. The drive member 16 includes a wide base portion 17 and a drive arm portion 18 extending in a bar shape in the horizontal direction from the central portion of the front end edge of the wide base portion 17. A short shaft hole 19 is formed in the central portion of the wide base portion 17. The attachment holes for the fasteners are formed on the left and right sides of the short shaft hole 19. This point spring receiving member 15 is the same. Also, the lower bearing auxiliary plate 13A related to the reverse latch locking member will be described with reference to FIG. The upper and lower bearing auxiliary plates 13 and 13A have the same configuration.
[0020]
The lower bearing auxiliary plate 13A includes a vertical plate portion 21 and bearing plate portions 22 and 22 formed by bending the upper and lower ends of the vertical plate portion 21 to face each other. A horizontal guide slot 23 through which the drive arm portion 18 of the drive member 16 penetrates is formed in the lower part), and a total of two through holes 24 for fixing tools are formed above the horizontal guide slot 23. Is formed.
[0021]
Further, shaft holes 25 and 25 are formed in the center portions of the bearing plate portions 22 and 22, respectively. In the present embodiment, the upper and lower vertical axes 14 and 14A are respectively fitted into the upper and lower shaft holes 25 and 25 of the bearing auxiliary plate 13A (13). The arm portion 18A of the spring receiving member 15 is in contact with a grip return spring 26 provided in the spring housing portion of the lock case 3 (see FIG. 2). Further, the spring receiving member 15 and the driving member 16 are respectively fixed to one side surfaces of the corresponding bearing members 11 and 11A via fixing tools (not shown).
[0022]
Each member related to the reverse latch locking member 40 will be described with reference to FIG. The driving member 16, the engaging plate 28 rotated by the driving member, the operating cam 32 interlocked with the locking plate, and the operating cam rotated against the spring force of the reverse latch spring 56 in the disengagement direction. The reversing latch locking member 40 to be configured primarily constitutes a reversing latch locking release mechanism. In other words, when the operating modes of these members are reversed, the reversing latch 5 is locked to the reversing latch locking member 40. Therefore, in other words, the driving member 16, the locking plate 28, and the operating cam 32 are changed. The reverse latch spring 51 and the reverse latch locking member 40 constitute one reverse latch stopper mechanism.
[0023]
Therefore, the engagement plate 28 rotated by the drive member 16 and the operation cam 32 rotated in the same direction by the engagement plate will be described. The circular engagement plate 28 is rotatably fitted in a circular fitting groove-shaped guide portion of the lock case 3. The engagement plate 28 has a cutout portion 28a at a part of the peripheral edge portion and a rectangular horizontal operation shaft 29 that protrudes in the horizontal direction from one side surface. The drive arm 18 of the drive member 16 is engaged with the cutout portion 28a of the engagement plate 28 in a state of passing through the horizontal guide slot 23 and the like of the lower bearing auxiliary plate 13A.
[0024]
The operating shaft 29 integral with the engagement plate 28 is fitted into the square hole 34 of the cylindrical portion 33 of the inner operating cam 32 that is pivotally supported by the first and second supports 30 and 31 of the lock case 3. As shown in FIG. 4, the operation cam 32 is disposed between the back plate 53 a of the reverse latch support frame 53 and the arm-like reverse latch locking member 40.
[0025]
Thus, the operating cam 32 includes a first engaging portion 35 that extends upward from the outer peripheral wall of the cylindrical portion 33 in a projection (finger) shape, and a lower portion of the first engaging portion 35 or an outer peripheral wall of the cylindrical portion. And a second engagement portion 36 that is provided in a protruding shape on a part of the second engagement portion 36.
[0026]
Reference numeral 40 denotes an arm-shaped or angled inverted latch locking member 40 supported by a fixed shaft 50 that is horizontally mounted on the first and second supports 30 and 31 in the lock case 3. The reverse latch locking member 40 basically includes a pair of left and right arm-like engagement plates 41, 41 and a plate-like connection portion 42 that connects or continuously connects the lower ends of the arm-like engagement plates 41, 41 on the distal end side. Become.
[0027]
Only one arm-like engagement plate 41 (left side in FIG. 5) is related to the present embodiment. The other arm-shaped engagement plate 41 is related to the outer operation cam 32A. Thus, the reversing latch locking member 40 has a shaft hole 43 for a fixed shaft at the center, and the reversing latch 5 is provided at the tip of the horizontal arm portion 44 extending in the horizontal direction with reference to the shaft hole 43. A pair of left and right engaging portions 45, 45 that are engaged with and disengaged from the lower (the other) engagement receiving portion 5 c are formed to project. A pair of left and right planar L-shaped and planar inverted L-shaped first engaged portions 47, 47 are formed at the upper end portion of the vertical arm portion 46 that extends in the vertical direction with the shaft hole 43 as a reference. .
[0028]
Furthermore, a receiving plate-like second engaged portion 48 that engages with the second engaging portion 36 of the operating cam is provided on the upper surface of the rear end portion (near the shaft hole 43) of the horizontal arm portion 44. . The biasing spring 51 for the reverse latch locking member is wound around the fixed shaft 50, and the locking portion (tip portion) 45 of the reverse latch locking member 40 engages with the engagement receiving portion 5 c below the reverse latch 5. Energize always.
[0029]
Here, the reverse latch support frame 53 will be described with reference to FIG. The inverted latch support frame 53 is formed in a U-shaped cross section, and is fixedly disposed toward an opening 55 formed in the front (including the front plate) 54 of the lock case 3. A reverse latch spring 56 is provided in the reverse latch support frame 53. The tip of the reverse latch spring 56 is in direct or indirect contact with the rear end of the reverse latch 5, while the rear end of the spring is in pressure contact with the inner wall surface of the back plate 53 a of the reverse latch support frame 53.
[0030]
Further, the rear end portion of the inversion latch 5 is located in the inversion latch support frame 53, and the lower engagement receiving portion 5c thereof is partially formed on the horizontal lower plate 53b of the inversion latch support frame 53 in the reverse direction of the inversion latch. It faces the notch portion (lower notch portion) 57 for the inverted latch locking member. On the other hand, the upper (one) engagement receiving portion 5c of the inversion latch 5 is a notch portion for an inversion latch stopper (upper notch portion) partially formed in the horizontal upper plate 53b of the inversion latch support frame 53 in the retracting direction of the inversion latch. We are at 58. Further, the projecting shafts 5 b and 5 b of the reversing latch 5 are located in the front end portion of the reversing latch support frame 53. Therefore, the inversion latch 5 is supported by the horizontal lower plate 53b and the horizontal upper plate 53b of the inversion latch support frame 53.
[0031]
Here, as shown by a virtual line in FIG. 2, the first support body 30 and the second support body 31 housed in the lock case 3 will be briefly described. The first support 30 is fixed to the inner wall surface of the thick portion 3 a of the handle mounting base type lock case 3. The 1st support body 30 is a plate-shaped body which bent the upper end part suitably, and exhibits what is called a case physical function. On the other hand, the second support 31 is opposed to the first support 30 with a required interval and exhibits a so-called case lid function. In this embodiment, except for the drive member 16 and the engagement plate 28, various members such as a dharma, a dead bolt, and a reverse latch stopper described below are attached (see FIGS. 3 and 6) .
[0032]
The main part of the present invention will be described with reference to FIGS. Note that detailed description of components that are not related to specific matters of the present invention will be omitted.
[0033]
61 is a dharma (dead bolt drive body) that is rotated by an operation such as a thumb turn, 62 is a dead bolt (first locking piece), 63 is a sickle piece (second locking piece) combined with the dead bolt, and 64 is a dead bolt. It is a dead spring for urging.
[0034]
First, these members will be briefly described. The dharma 61 is rotatably fitted in the fitting shaft hole 65 of the first support 30. The driving arm 66 of the dharma 61 selectively engages with the opposed notch engaging surface of the rear end portion 62 a of the dead bolt 62. As a result, the dead bolt 62 moves back and forth in the horizontal direction via the movable shafts 68 (68 serving as a spring shaft) that are respectively guided by the two horizontal guide portions 67 and 67 of the first support 30.
[0035]
The dead spring 64 is housed in an end face U-shaped dead bolt 62, and its central portion is wound around a lower spring shaft 68. One end portion is supported by a spring receiving portion 69 formed on the dead bolt 62, and the other end portion is supported by a mountain-shaped spring receiving portion 70 that is connected to the driving arm 66 of the dharma 61 in a step shape. . Since the dead spring 64 is mounted on the dead bolt 62 so as to move together with the dead bolt 62, the other end of the dead spring 64 having a click function is always on the spring receiving portion 70 of the dharma 61.
[0036]
The sickle piece 63 has a rear end portion 63a that is pivotally supported by the protruding shaft 71 at the upper end portion of the first support 30 and an engagement pin 72 and a sickle piece that are provided laterally near the tip end portion of the dead bolt 62. It is combined so as to be interlocked with the dead bolt 62 through a long hole 73 formed in the central portion of 63.
[0037]
Therefore, when the dead bolt 62 protrudes (advances) with the front 54 as a reference, the sickle piece 63 rotates around the projection shaft 71 and engages with the receiving tool. On the other hand, when the dead bolt 62 is retracted into the lock case 3, the sickle piece 63 is pulled back in the direction of disengagement through the engagement pin 72.
[0038]
Next, the reverse latch stopper 80 and the reverse latch stopper spring 81 will be described. Referring to FIG. 6, the reversing latch stopper 80 is rotatably supported by a support shaft 82 projecting from a portion near the left edge of the case body first support 30.
[0039]
Thus, the reverse latch stopper 80 is connected to or connected to a pair of inner and outer annular portions 83 through which the support shaft 82 passes, and a part of the lower portion on the front side of the annular portion 83, and the reverse latch support frame 53. A contact portion 84 capable of abutting against the horizontal upper plate 53b, and extending downward by the contact portion 84, and penetrating through the upper notch portion 58 of the reverse latch support frame 53, and an engagement receiver above the reverse latch 5 The inner and outer stopper portions 85 that engage with and disengage from the portion 5c, and on the other hand, the dead engaging portion that extends in the opposite direction (upward) from the stopper portion 85 and that is formed at the bottom of the dead bolt when the dead bolt 62 is retracted (For example, a notch end face) 75 and an inner and outer finger-shaped receiving portion 86 that is pushed.
[0040]
In this embodiment, the reversing latch stopper 80 is formed in consideration of the left and right sides, so that it is one stopper portion 85 (FIG. 6) that is engaged with and disengaged from the engagement receiving portion 5c above the reversing latch 5. Then, not the front side, but the inner stopper part). Further, the central portion of the reverse latch stopper spring 81 is wound around the support shaft 82, one end portion is a contact portion 84 of the reverse latch stopper 80, and the other end portion is a horizontal upper plate 53b of the reverse latch support frame 53. It is supported.
[0041]
Next, the operation related to the specific requirements of the present invention will be described. First, the engagement / disengagement between the reverse latch stopper 80 and the reverse latch will be described. As shown in FIG. 8 at the time of unlocking, the Dharma 61 is rotated clockwise by the thumb turn operation. As a result, when the dead bolt 62 is retracted into the lock case 3, the dead engagement portion 75 of the dead bolt 62. Hits the finger receiving portion 86 of the reverse latch stopper 80. At this time, when the dead bolt 62 is retracted to a predetermined position, the reverse latch stopper 80 pushed by the notch end face 75 resists the spring force of the spring 81 and uses the support shaft 82 as a fulcrum to release the lock (clockwise). Direction).
[0042]
On the other hand, as shown in FIG. 7 at the time of locking, when the dharma 61 rotates counterclockwise and, as a result, when the dead bolt 62 advances from the lock case 3, the dead engagement portion 75 of the dead bolt 62 becomes the reverse latch stopper. It leaves | separates from the finger-shaped receiving part 86 of 80. At this time, when the dead bolt 62 protrudes to a predetermined position, the reverse latch stopper 80 released from the notch end surface 75 moves in the locking direction (counterclockwise) while the support shaft 82 is used as a fulcrum by the spring force of the spring 81. Rotate. As a result, the stopper portion 85 of the reverse latch stopper 80 engages with the engagement receiving portion 5 c above the reverse latch 5. As a result, even if the door rattles in the thickness direction, the reverse latch 5 is restricted from moving backward or in the reverse direction (first reverse latch sputter function).
[0043]
Next, the relationship between the reverse latch locking member 40 and the reverse latch 5 will be described with reference to FIGS. Since the stopper mechanism for the reverse latch of the lock of the present invention is applied to the push-pull lock, the reverse latch 5 is pulled when the handle 4 is pushed (pressed) to the door 1 side or pulled away from the door 1. When the (pulling operation) is performed, the reverse latch locking member 40 is released.
[0044]
Therefore, a description will be given on the assumption that the handle 4 is pushed to the door 1 side. When the handle 4 is pushed (pressed), the drive member 16 rotates horizontally in the direction of arrow A in FIG. 5 about the longitudinal axis 14A. Then, the engagement plate 28 rotates in the arrow B direction (clockwise) in FIG. 5, and the inner operation cam 32 rotates in the same direction as the engagement plate 28 (arrow C direction) via the operation shaft 29. At this time, the finger-like first engaging portion 35 of the operating cam is separated from the first engaged portion 47 above the reversing latch locking member 40, but the second engaging portion 36 below it is the reversing latch locking member 40. The second engaged portion 48 is pushed.
[0045]
As a result, the reverse latch locking member 40 rotates in the disengagement direction against the spring force of the biasing spring 51 with the fixed shaft 50 as a fulcrum. In the present embodiment, when one drive member 16 swings left and right, it has an inversion having one or more engaged portions 47 and 48 via one engagement plate 28 and one operation cam 32 interlocked therewith. The latch locking member 40 rotates in the direction of disengagement.
[0046]
On the other hand, when the door 1 is closed and the handle 4 is released, the spring receiving member 15 automatically returns to the original position by the spring force of the handle return spring 26. At this time, the drive member 16 also returns to the original position. When the driving member 16 returns to the original position, the driving member 16, the engagement plate 28, and the operating cam 32 rotate in the opposite direction (counterclockwise) to the arrows A, B, C, respectively. 40 is rotated in the direction in which the inversion latch 5 is locked by the spring force of the urging spring 51.
[0047]
As a result, the locking portion 45 of the reverse latch locking member 40 engages with the engagement receiving portion 5 c below the reverse latch 5. Thereby, the reverse movement of the reverse latch 5 is restricted (second reverse latch stopper function). Therefore, the reversing latch 5 of this embodiment is double-locked by the two members of the reversing latch stopper 80 and the reversing latch locking member 40 when locked.
[0048]
【Example】
Another object of the present invention is to double-lock the reverse latch by the two members of the reverse latch stopper 80 and the reverse latch locking member 40 during locking.
[0049]
【The invention's effect】
As is clear from the above description, the present invention has the following actions and effects.
(1) The reverse latch is automatically unlocked following the backward movement of the dead bolt, or the reverse latch can be locked.
(2) The first object can be achieved without increasing the number of parts.
(3) Each member can be rationally combined to effectively use the internal space of the lock case.
(4) The inversion latch can be double-stopped (double lock).
[Brief description of the drawings]
1 to 8 are schematic explanatory views showing one embodiment of the present invention.
FIG. 1 is an explanatory diagram showing a working environment from a plan view (a reverse latch is a perspective view);
FIG. 2 is a schematic longitudinal sectional view illustrating a state in which a handle is pivotally attached to a lock case.
FIG. 3 is a schematic explanatory diagram of a main part.
FIG. 4 is a schematic explanatory diagram of a main part.
FIG. 5 is an exploded perspective view of each member centering on a reverse latch locking member.
FIG. 6 is a schematic explanatory view showing a locking state of the reverse latch stopper at the time of locking.
FIG. 7 is an exploded perspective view of each member around a reversing latch stopper.
FIG. 8 is a schematic explanatory view showing a release state of the reverse latch stopper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Door, 6 ... Door (casing), 2 ... Push pull lock, 3 ... Lock case, 4 ... Handle, 4a ... Inner wall surface, 5 ... Reversing latch, 5c ... Engagement receiving part, 7 ... Receiving tool, 8 ... Thumb turn, 11, 11A ... bearing member, 12 ... upper fitting recess, 12A ... lower fitting recess, 13 ... upper bearing auxiliary plate, 13A ... lower bearing auxiliary plate, 14, 14A ... vertical axis, DESCRIPTION OF SYMBOLS 15 ... Spring receiving member, 16 ... Drive member, 17 ... Wide base part, 18 ... Drive arm part, 19 ... Short shaft hole, 21 ... Vertical plate part, 22 ... Bearing plate part, 23 ... Horizontal guide long hole, 25 ... Shaft Hole, 26 ... Spring for returning the handle, 28 ... Engagement plate, 28a ... Notch, 29 ... Operating shaft, 30 ... Second support ... Second support, 32 ... Operating cam, 33 ... Cylindrical part, 34 ... Square Hole: 35 ... 1st engaging part, 36 ... 2nd engaging part, 40 ... Reverse latch locking member, 41 ... Engagement plate, 42 ... Connection , 43 ... shaft hole, 44 ... horizontal arm part, 45 ... locking part, 46 ... vertical arm part, 47 ... first engaged part, 48 ... second engaged part, 50 ... fixed shaft, 51 ... attached Spring ... 53 ... Reverse latch support frame, 54 ... Front, 55 ... Opening, 56 ... Reverse latch spring, 57 ... Lower notch, 58 ... Upper notch, 61 ... Dharma, 62 ... Dead bolt, 63 ... Sickle piece, 64 DESCRIPTION OF SYMBOLS ... Dead spring, 65 ... Fitting shaft hole, 66 ... Drive arm, 67 ... Horizontal guide part, 68 ... Movable shaft (one is a spring axis), 69 ... Spring receiving part, 70 ... Spring receiving part, 71 ... Projection axis, 72 ... engagement pin, 73 ... long hole, 75 ... dead engagement part, 80 ... reversing latch stopper, 81 ... spring for reversing latch stopper, 82 ... support shaft, 83 ... annular part, 84 ... contact part, 85 ... stopper Part, 86 ... receiving part.

Claims

When the door is closed, the reverse latch 5 protruding by the spring force 56 of the reverse latch spring in the reverse latch support frame 53 of the lock case 3 is locked by the reverse latch stopper 80 pivotally supported in the lock case. a reversing latch stopper mechanism of the lock to be engaged in the state, the lock casing 3 is a mounting boss type, mounted inside the imposition state of the door 1, also in a tablet case 3 The plate-shaped first support body 30 and the plate-shaped second support body 31 in which the members of at least the dharma 61, the dead bolt 62, the reverse latch stopper 80, and the reverse latch locking member 40 are sandwiched are fixedly fixed. provided, the inverting latch stopper 80, together are rotatably arranged via a support shaft 82 between the dead bolt 62 and the inverting latch 5, dull when unlocking the dead bolt When the dead bolt 62 is retracted into the lock case 3 by rotating 61, the reversing latch stopper 80 rotates against the spring force of the reversing latch stopper spring 81 in the direction of unlocking. On the other hand, when the dead bolt 61 rotates and the dead bolt 62 protrudes from the lock case 3 when the dead bolt is locked, the reverse latch is caused by the spring force of the spring 81. The stopper 80 rotates in the locking direction and has a stopper portion 85 that engages with one of the engagement receiving portions 5 c in the vertical direction of the reversing latch 5, and the fixed shaft 50 is disposed outside the reversing latch support frame 53. The reversing latch locking member 40 is rotatably arranged, and the reversing latch locking member 40 is rotated by the spring force of the urging spring 51 when the door is closed, and the locking portion 45 of the reversing latch locking member 40 is opposite to the anti-rotation member 45. Vertical direction of the other lock of the inverting latch stopper mechanism, characterized in that to engage the engagement receiving portion 5c of the latch 5.

In claim 1, the reverse latch stopper 80 is an annular portion 83 pivotally supported by the lock case, and a reverse latch support frame 53 provided on the lower side of the annular portion 83 and fixed in the lock case. A contact portion 84 that can abut against the horizontal upper plate 53b, and extends downward with the contact portion 84, and penetrates the reversing latch support frame and engages with the engagement receiving portion 5c above the reversing latch 5. A stopper portion 85 to be removed and, on the other hand, a stopper portion 85 that extends in the opposite direction to the stopper portion 85 and is received by a lower portion of the dead bolt 62 when the dead bolt 62 is retracted. Stopper mechanism for reverse latch.