JP3928986B2 - Sliding door sickle - Google Patents

Description

【０００１】
【発明の属する技術分野】
本発明は、引き戸を閉めた際に自動的に鎌部材が出て、戸枠体の掛止金具の掛止部材へ引っ掛かり（仮施錠状態や空締まり状態という）、引き戸を開ける際に鎌部材が自動的に掛止部材から外れて、錠内へ収納されるようにした引き戸用鎌錠の改良に関する。
特に、引き戸を閉めた際に戸枠体との衝突でバウンドし、鎌部材が掛止部材から勝手に外れるのを確実に防止でき、また引き戸を開ける際は軽い力で開けることができ、かつ引き戸を閉めた際に戸枠体との間で衣服等が挟まり、鎌部材の掛止が外れなくなっても、確実に仮施錠状態を解除できることを特徴とするものである。
【０００２】
【従来の技術】
引き戸用鎌錠は、かつては和風家屋の出入り口等の引き戸に設けられることが多かったが、近時は家屋内で風呂・トイレ・勉強部屋のような個室の出入り口の引き戸に設けられることも多い。
この引き戸用鎌錠は、従来より用途・機能等によって幾つかのものに分類できるが、大別すると次のようなものがある。
ａ）第１に、引き戸を閉じた後に手動で鎌部材を突出させて戸枠体の掛止部材に掛止させ、また引き戸を開ける際も手動で鎌部材を掛止部材から外し錠ケース内へ収納させてから、引き戸を開けるようにしたもの（例えば実開平５−４７２６３号公報参照）。
【０００３】
ｂ）第２に、引き戸が閉まった際に鎌部材が自動的に錠から出て、戸枠体の掛止部材へ引っ掛かるが、引き戸を開ける際は手動で鎌部材を掛止部材から外し錠ケース内へ収納させてから、引き戸を開けるようにしたもの（例えば実開昭６０−１３５４６０公報、実開平７−２６５４９号公報参照）。
ｃ）第３に、引き戸が閉まった際に鎌部材が自動的に錠から出て、戸枠体の掛止部材へ引っ掛かり、かつ引き戸を開けると鎌部材が自動的に掛止部材から外れて、錠ケース内へ収納されるようにしたもの（例えば特公昭５６−３３５５３公報、実公平３−２４７７８号公報、特開平８−８６１３２号公報等参照）、がある。
【０００４】
本発明の引き戸用鎌錠は、上記ｃ）の第３のものに属するので、それらを少し詳しく述べる。
(1) まず特公昭５６−３３５５３公報には、錠ケース内に鎌部材を先端部が前・後方向へ回動して出・入自在に軸支し、該鎌部材の支軸を錠ケースの前後方向の長孔に移動自在に係合させて、該支軸を常時は後方へ付勢する引っ張りバネを設け、また錠ケースにトリガーを先端部が前・後方向へ出入自在に設けて、該トリガー部材と鎌部材間にトリガー後退時に鎌部材を前方へ回動させる作動部材を連結し、かつトリガーを常時は前方へ付勢する引っ張りバネを設けたものが記載されている。なお、別のロックレバーにより仮施錠状態時の鎌部材を掛止し、ロックする（本施錠状態にする）ことも可能である。
【０００５】
これは、引き戸を閉めた際に、突出したトリガーが戸枠体に当たり錠ケース内へ後退することで、これと連動した作動部材を介して鎌部材の先端部が前方へ回動し始め、引っ張りバネの付勢でさらに前方へ回動して、戸枠体の掛止部材に掛止され、仮施錠状態となる。また引き戸を開けた際には、鎌部材は先端部が掛止部材内面に当たった状態で後方へ引かれて前倒しになるが、さらに引かれて鎌部材は支軸を中心に後方へ回動し、掛止部材から外れて錠内へ没入し仮施錠状態が解かれる。
【０００６】
上記の引き戸を閉めた際に、錠は鎌部材で施錠状態になるが、鎌部材はその先端部を掛止部材に引っ掛けた状態で支軸が引っ張りバネで引かれ、引き戸が戸枠体へ引っ張られているため、戸枠体が傾斜していても閉戸状態が維持されると共に、引き戸を閉めた際にバウンド（はね返り）が防止されている。
(2) 次に、実公平３−２４７７８号公報に記載のものは、トリガーが戸枠体から突出したものであるため、それに対応してその構造は上記特公昭５６−３３５５３公報に記載のものと少し異なるが、引き戸を閉めた際に後退するトリガーが鎌錠内の第１作動部材を後退させ、これが第２作動部材を介して鎌部材を前方へ回動・突出させて、戸枠体の掛止部材へ掛止させると共に、引き戸を閉じた際にトリガーから外れた第１作動部材が前進し、第２作動部材を介して鎌部材をねじりコイルバネに抗して後方へ回動可能としてある。なお、別のロックレバーにより仮施錠状態時の鎌部材を掛止して、ロックすることも可能である。
【０００７】
上記の引き戸を閉めた際に、錠は鎌部材で仮施錠状態になるが、鎌部材は先端部を係止部に係止された状態でねじりコイルバネで後方へ引かれ、引き戸が戸枠体側へ引き寄せられるため、戸枠体が傾斜していても閉戸状態が維持されると共に、引き戸を強い勢いで閉めた際のバウンドも防止されている。
(3) 更に、特開平８−８６１３２号公報の請求項２および図面には、錠ケース内にトリガーバネで出没自在に嵌装されたトリガーと、該トリガーとの間に形成されたラックとピニオンの変換機構を介して、トリガーの後退により突出され、かつトリガーの突出により後退される鎌部材と、回動突出された鎌部材の係止部を施・解錠操作部材の作動により係止して、該鎌部材の後退を阻止し本施錠状態とする係止片とを備え、上記トリガーには係合凹部を形成すると共に、閉戸時にトリガーが後退位置へきた際に係合凹部へ係合するストッパー部材を、バネにより付勢して設けたものが記載されている。
【０００８】
これは、引き戸を閉めた際にトリガーが後退することで、変換機構を介して鎌部材が前方へ回動し先端部が戸枠体の掛止部材に掛止されて仮施錠状態となる。また引き戸を開ける際には、先端部が掛止部材に引っ掛かった鎌部材が強制的に引かれるので、鎌部材が後方へ回動し始めるが、それに伴って変換機構によりトリガーは前方へ移動され、かつストッパー部材も係合凹部から外れて前方へ突出し、同時に鎌部材がさらに後方へ回動して掛止部から外れて、錠ケース内へ没入し仮施錠状態が解かれる。
【０００９】
上記の引き戸を閉めた際に、錠は鎌部材で施錠状態にあるが、後退位置のトリガーはその係合凹部にストッパー部材が係合して前進を係止されており、ラックとピニオンの変換機構を介して鎌部材も不用意に後方へ回動するのを阻止されている。そのため、戸枠体が傾斜していても閉戸状態が維持されると共に、引き戸を強い勢いで閉めた際のバウンドが防止されている。
なお、室内側の操作部を操作することで、施・解錠操作部材が作動して仮施錠状態時の鎌部材の係止部を係止し、鎌部材の後方への回動を阻止して本施錠状態になるし、かつその係止部の係止を解くことで仮施錠状態に戻すこともできるようにしてある。
【００１０】
【発明が解決しようとする課題】
従来のバウンド防止を考慮した引き戸用鎌錠では、上記(1)(2)で示した錠の如く鎌部材を引っ張りバネやねじりコイルバネで後方へ引っ張って、引き戸を戸枠体側へ引き寄せるようにしたり、で示した錠の如くトリガーを係止するストッパー部材をバネで押圧したりして、引き戸を閉めることで自動的に一旦戸枠体の掛止部材に引っ掛かった鎌部材が、引き戸のバウンドで不用意に後方へ回動して外れることの無いようにしてある。
【００１１】
ところで、引き戸を閉めた際のバウンドの大きさは、例えば引き戸の重さや引き戸と敷居やレールとの関係等で違いが生じる。例えば引き戸が軽いものであったり、敷居やレールが滑り易かったりすると、引き戸は大きくバウンドして開く方向へ移動しようとする。そのため、引き戸のバウンドが大きい場合には、引き戸を開ける際に自動的に仮施錠状態が解除されるのと同様に、上記のバネに抗して鎌部材が後方へ回動しまたはトリガーが前進して、鎌部材の先端部が掛止部材から外れてしまうことがある。
【００１２】
そこで上記従来の(1)(2)(3)で示した引き戸用鎌錠では、大きなバウンドに対応すべく、鎌部材を後方へ引く引っ張りバネやねじりコイルバネ、あるいはストッパーを押圧するバネを、予めバネ力が強いものに設計しておくことが考えられる。これは確かに引き戸が大きくバウンドしようとしても、該バネの力で鎌部材が不用意に後方へ回動することを阻止し、バウンドを抑えることができる。
しかしそれでは、引き戸を開ける際に先端部が掛止部材に引っ掛かった鎌部材を後方へ回動させるために、その強いバネ力に打ち勝つ大きな力で引き戸を引っ張ることが必要となる。例えば病弱者や老人・子供等には、この引き戸用鎌錠の付いた引き戸を開けられなくなってしまうし、引き戸を開けることで仮施錠状態が自動的に解除できるというこの錠の主要な特徴を失うことになってしまう、という問題点がある。
【００１３】
さらに、上記のものの中には、引き戸を閉めた際に戸枠体との間で衣服等が挟まった状態で鎌部材の先端部が掛止部材に掛止されると、掛止部材の掛止状態が解除されなくなる場合が有った。
本発明は、引き戸の閉または開により、自動的に仮施錠状態になったり解除されたりする構造の引き戸用鎌錠において、上記の問題点をシンプルな構成で解決することを課題として開発されたものである。即ち本発明の目的は、引き戸を開けた際に仮施錠状態が自動的に解除される機能を害することなく、引き戸のバウンド防止を確実に行えると共に、軽い力で引き戸を開けることができ、かつ引き戸を閉めた際に戸枠体との間で衣服等が挟まり、鎌部材の掛止が外れなくなっても確実に仮施錠状態を解除できるような、引き戸用鎌錠を提供することにある。
【００１４】
【課題を解決するための手段】
Ａ 本発明に係る引き戸用鎌錠の第１のものは、
引き戸１の錠ケース３内に、閉戸時に戸枠体２への当接で後退するトリガー９と、その後退時に鎌部材４を前方へ回動させる作動部材１０と、前方への回動で戸枠体２の掛止金具７の掛止部材８へ先端部６が掛止可能な鎌部材４と、該鎌部材４を一定の基準線Ｌを境に前方または後方へ付勢するバネ１１を備えた引き戸用鎌錠において、
上記鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６を有する揺動部材１４を、引き戸１を閉めた際の慣性力で前方へ揺動可能に設けて、掛止部材８へ掛止状態になった直後の鎌部材４の周端縁の一部２２を一瞬間だけ支承可能とし、
かつ、上記揺動部材１４の横軸１７を、昇降可能な軸受け部材２０で支承させると共に、該軸受け部材２０を上方へ付勢する押しバネ２１で支承させたものである。
【００１５】
Ｂ 本発明に係る引き戸用鎌錠の第２のものは、
引き戸１の錠ケース３内に、閉戸時に戸枠体２への当接で後退するトリガー９と、その後退時に鎌部材４を前方へ回動させる作動部材１０と、前方への回動で戸枠体２の掛止金具７の掛止部材８へ先端部６が掛止可能な鎌部材４と、該鎌部材４を一定の基準線Ｌを境に前方または後方へ付勢するバネ１１を備えた引き戸用鎌錠において、
上記鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６を有する揺動部材１４を、引き戸１を閉めた際の慣性力で前方へ揺動可能に設けて、掛止部材８へ掛止状態になった直後の鎌部材４の周端縁の一部２２を一瞬間だけ支承可能とすると共に、
上記揺動部材１４の横軸１７を、昇降可能な軸受け部材２０で支承させると共に、該軸受け部材２０を、上方へ付勢する押しバネ２１で支承させ、
かつ、上記鎌部材４を付勢するバネ１１を圧縮コイルバネとし、その他端部１３を、錠ケース３内下部寄りに設けたバネ力調節用ネジ２７で支持させて、該バネ力調節ネジ２７を錠ケース３外から回動調節可能としたものである。
【００１６】
【発明の実施の形態】
上記構成において、本発明の上記第１のものでは、鎌部材４を前方または後方へ押圧するバネ１１は、従来の多くの引き戸用鎌錠の如くねじりコイルバネでもよいが（図２・図４ないし図７参照）、上記第２で示した如く、圧縮コイルバネとしてもよい（図８参照）。
バネ１１をねじりコイルバネとしたもの、または圧縮コイルバネでバネ力調節をしないものでは、該バネ１１の一端部１２を、先端部６が掛止部材８へ掛止状態時における鎌部材４の支軸５の下方位置に掛止させると共に、該バネ１１の他端部１３を、錠ケース３下部寄りの軸、例えば作動部材１０を可回動に軸支する軸２５に掛止させればよい（上記図２・図４ないし図７参照）。
【００１７】
バネ１１として圧縮コイルバネを用い、バネ力調節を可能としたものでは、一端部１２を、例えば先端部６が掛止部材８へ掛止状態時の鎌部材４の支軸５の下方位置に設けた連結部材２４に掛止させ、また他端部１３を、例えば錠ケース３下部寄りの軸２５に軸支のバネ受け部材２６に螺合したバネ力調節ネジ２７に掛止させればよい（図８参照）。
ここで錠ケース３下部寄りの軸２５とは、上記と同様に例えば作動部材１０を可回動に軸支する軸でもよいが、作動部材１０、トリガー９や揺動部材１４の動きを妨げぬ位置に設けた別の軸でもよい（上記図８参照）。
【００１８】
上記第１ないし第２のものにおいて、バネ１１は一定の基準線Ｌ、即ち鎌部材４の支軸５とバネ１１の他端部１３とを結ぶ線を境にして、バネ１１の一端部１２の中心位置Ｑが該基準線Ｌよりも前方（掛止金具７のある方向、例えば図４で左方向）にある際には、バネ力は鎌部材４を前方へ回動させるように付勢し、該基準線Ｌよりも後方（錠ケース３の奥側への方向、例えば図２で右方向）にある際には、鎌部材４を後方へ回動させるように付勢している。
上記第１または第２のものにおいて、鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６をもつと共に、引き戸１を閉めた際の慣性力で前方へ揺動可能な揺動部材１４を設けてある。該揺動部材１４の上部寄りの係止用部１６は前部に設けておき、重り部１５が前方へ揺動した際に該係止用部１６の位置がより上方へ回動するようにしておくことが望ましい。
【００１９】
鎌部材４の周端縁の一部２２と揺動部材１４の係止用部１６との関係は、引き戸１を閉めて鎌部材４の先端部６が、戸枠体２の掛止部材８へ掛止状態になった際に、慣性力で下部の重り部１５が前方へ揺動した揺動部材１４の係止用部１６が、上記鎌部材４の周端縁の一部２２を一瞬間だけ支承し（図４参照）、その後に重り部１５が自重で後方へ揺動した際に、係止用部１６が鎌部材４の周端縁の一部２２から支承状態を解くもの（図５参照）である。
上記第１または第２のもので、揺動部材１４の横軸１７は、錠ケース側板１８に直接に軸支させず、昇降可能な軸受け部材２０で支承させ、該軸受け部材２０の下部には、上方へ付勢する押しバネ２１を設けてある。
【００２０】
該押しバネ２１のバネ力は、引き戸１を強い力で開ける際に、鎌部材４の後方への回動による押下げ力を受けた揺動部材１４が、軸受け部材２０と共に降下し得る程度のものである。換言すれば、引き戸１のバウンド力が鎌部材４を後方へ回動させようとする程度の力では、揺動部材１４・軸受け部材２０が降下しない程度のバネ力としてある。
上記第２のものにおいては、上記鎌部材４を前方または後方へ付勢するバネ１１を圧縮コイルバネとしてある。該圧縮コイルバネ１１の一端部１２は、先端部６が掛止部材８へ掛止状態時の鎌部材４の支軸５下方位置に設けた連結部材２４下端に掛止し、また他端部１３は、錠ケース３内下部寄りの軸２５で軸支のバネ受け部材２６に螺合したバネ力調節用ネジ２７上端に掛止させておくのがよい。このバネ力調節ネジ２７は、錠ケース３外から回動調節可能としてある。
【００２１】
上記第１または第２のものにおいて、鎌部材４の周端縁の一部２２は揺動部材１４の係止用部１６で支承される部分である。該周縁部の一部２２は、重り部１５の前方への揺動で一瞬間だけ支承した係止用部１６が、重り部１５の後方への揺動でスムーズにそこから離れるように、係止用部１６の側端面が揺動する際の軌跡に対応して、側面図で見て円弧状の凹状部に形成しておくのがよい。
上記鎌部材４を本施錠状態にするために、例えばトリガー９の後部寄り部分にロック用係止部２９を形成すると共に、後退位置にあるトリガー９の該ロック用係止部２９を掛止すべく、室内側の施錠操作部３０の操作で作動可能なロック部材３１を設けておけばよい（図１、図５参照）。
【００２２】
しかし、バネ１１に圧縮コイルバネを用い、バネ力調節調節ネジ２７を設けたものでは、バネ力調節用ネジ２７が螺合するバネ受け部材２６に、室内側の施錠操作部３０の操作で作動可能なロック部材３１を係合可能としておけばよい（図８参照）。
図において、２８は衣服等、３２はバネ１１を圧縮コイルバネとした場合の通挿ロッドを示す。
上記本発明に係る引き戸用鎌錠の作動状態は、次のようになる。
【００２３】
ａ）本発明の上記第１ないし第２のいずれのものも、引き戸１が開いた状態では、鎌部材４は後方へ回動して錠ケース３内へ没入しており、かつトリガー９はその状態の鎌部材４に対応して作動部材１０で前方へ押され、錠ケース３の前面板４６の孔部から前方へ突出している。
引き戸１を閉じた際には、まずトリガー９の先端が戸枠体２の前面に当接して後退し始める。該トリガー９の後退に伴い、それと鎌部材７とを連結した作動部材１０が、一端部１２を鎌部材４に取付けたバネ１１のバネ力に抗して鎌部材４を前方へ押し、回動させ始める。
【００２４】
該鎌部材４の前方への回動により、バネ１１の一端部１２の位置Ｑが、鎌部材４の支軸５と該バネ１１の他端部１３とを結ぶ基準線Ｌ上より前方へ出ると、バネ力は鎌部材４を前方へ回動させる方向へ付勢することになる。そのため、鎌部材４は自動的にさらに前方へ回動され、その先端部６が戸枠体２の掛止金具７内へ入って掛止部材８で掛止され、該引き戸用鎌錠が自動的に仮施錠状態となる。
上記の仮施錠状態を更に本施錠状態にするには、室内側の施錠操作部３０を操作し、後退位置にきているトリガー９のロック用係止部２９にロック部材３１を係合させて、該トリガー９に連結された作動部材１０を介して鎌部材４の回動を阻止する（図５参照）。またはバネ受け部材２６のロック用係止部２９に係合させ、該バネ受け部材２６の回動を阻止して鎌部材４の後方への回動を阻止すればよい（図８参照）。
【００２５】
ｂ）本発明の上記第１ないし第２のいずれのものも、引き戸１を開ける場合には、引き戸用鎌錠が仮施錠状態ならそのまま引き戸１を開ければよく、また本施錠状態にあるなら施錠操作部３０を操作して、ロック部材３１による係止を解いた後に、引き戸１を開ければよい。
引き戸１が開けられることで、鎌部材４の先端部６が掛止金具７の掛止部材８に引っ掛かったままで、引き戸１・錠ケース３と一緒に鎌部材４の支軸５が後退し、係止部材８から離れていくので、鎌部材４は遂には支軸５を中心に後方へ回動し始め、先端部６が掛止部材８から外れることになる。
【００２６】
上記鎌部材４の後方への回動で、バネ１１の一端部１２が、基準線Ｌ即ち鎌部材４の支軸５と該バネ１１の他端部１３とを結ぶ線よりも後方位置へ来ると、バネ力はそれまで鎌部材４を前方へ付勢していた状態から、後方へ付勢する状態に変わる。これで、鎌部材４は支軸５を中心にさらに後方へ回動し、錠ケース３内へ自動的に没入し解錠状態となる（図２参照）。
ｃ）ところで、引き戸１を閉めた場合に、戸枠体２との衝突で引き戸１がバウンドし（跳ね返り）、鎌部材４の先端部６が掛止部材８から外れ、引き戸１が開くことがある。通常は、鎌部材４の先端部６が掛止部材８に掛止されておれば、鎌部材４はバネ１１で前方へ付勢されているから、引き戸１がバウンドしようとしても鎌部材４は後方へ回動せず、先端部６の掛止は外れないし、引き戸１が開くこともない。
【００２７】
しかし、引き戸１を閉める力が強すぎたり、引き戸１が軽かったり、戸車とレール等との滑りが良過ぎたりすると、引き戸１を閉めた際に戸枠体２との衝突によるバウンド力が大きくなる。鎌部材４の先端部６が掛止部材８に一旦掛止されても、バウンド力がバネ１１の力より大きいと、上記の引き戸１を開ける場合と同様に、鎌部材４が支軸５を中心に後方へ回動し始め、先端部６が遂には掛止部材８から外れ、引き戸１が開いてしまう。
その防止のために、本発明の上記第１または第２のものでは、鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６をもつ揺動部材１４を横軸１７で軸支し、引き戸１を閉めた際の慣性力で揺動する該揺動部材１４が、掛止部材８へ掛止状態になった直後の鎌部材４の周端縁の一部２２を、係止用部１６で一瞬間だけ支承可能としてある。
【００２８】
これにより、引き戸１を閉めた際に、上記の如く鎌部材４が前方へ回動して先端部６が掛止部材８へ掛止されると同時に、引き戸１を閉めた際の慣性力で、垂下状態にあった揺動部材１４（図２参照）が下部の重り部１５を前方へ揺動させる。そのため、該揺動部材１４上部寄りの係止用部１６がより上方へ回動し、その側端面が上記鎌部材４の周端縁の一部２２の後下方へ来て、該周端縁の一部２２を後下方から一瞬間だけ支承状態となる（図４・図８参照）。
これで、引き戸１が戸枠体２との衝突でバウンドして後退し、鎌部材４が後方へ回動しようとしても、揺動部材１４の掛止用部１６が該鎌部材４の後下方の周端縁の一部２２を支承しており、鎌部材４は後方への回動を阻止され先端部６の掛止部材８への掛止状態はそのままであり、バウンドで引き戸１が開くようなことは無い。
【００２９】
上記で、鎌部材４が係止用部１６により回動を阻止されるのはほんの一瞬間だけで、揺動部材１４は下部の重り部１５がその後直ちに自重で後方へ揺動するから、上部寄りの係止用部１６は直ちに前下方へ回動して、鎌部材４の周端縁の一部２２の後下方から離れ、支承状態が解除される（図５参照）。
なお上記の場合に、鎌部材４はバネ１１で常時上方へ付勢されているから、鎌部材４の周端縁の一部２２と揺動部材１４の係止用部１６の側端面との間に僅かな間隙が生じ、揺動部材１４が重り部１５の自重で後方へ揺動して係止用部１６が前下方へ回動することに支障はない。
【００３０】
その後に引き戸１を開ける場合には、鎌部材４は揺動部材１４の係止用部１６による支承を受けておらず（上記図５参照）、揺動部材１４を備えないものと同様の軽い力で引き戸１を開けることができて、老人や子供等でも容易に仮施錠を自動解除できる。
ｄ）次に、上記の如く引き戸１を閉めた際に、戸枠体２との間で衣服等２８が挟まることがある。
その際には、衣服等２８が挟まった分だけ僅かながら引き戸１が後方へ移動しており、鎌部材４を僅かながら後方へ回動させようとする力が作用して、上記の如く鎌部材４がバネ１１で上方へ付勢されていても、鎌部材４の周端縁の一部２２と係止用部１６の側端面との間に間隙が生じず、支承状態が強くなり係止状態となっている。
【００３１】
これでは、揺動部材１４が重り部１５の自重で後方へ揺動しようとしても揺動できないから、鎌部材４に対する支承・係止状態が保持されたままである。このように鎌部材４が後方へ回動できないと、引き戸１を開けようと後方へ引っ張っても、鎌部材４の先端部６は掛止部材８への掛止が外れない（図６参照）。
このような状態を解除するために、本発明の上記第１または第２のものでは、該揺動部材１４の横軸１７を軸支した軸受け部材２０を昇降可能とすると共に、該軸受け部材２０の下部を上方へ付勢する押しバネ２１で支承させてある。
【００３２】
そのため、引き戸１を開ける方向へ強い力を加えると、先端部６を掛止部材８に掛止された鎌部材４は上記の如く後方へ回動しようとして、該鎌部材４の周端縁の一部２２が揺動部材１４の係止用部１６の側端面を押圧する。この際に揺動部材１４は横軸１７を軸支した軸受け部材２０と共に、押しバネ２１のバネ力に抗して降下する（図７参照）。
即ち、引き戸１が開く方向へ移動すると、鎌部材４は支軸５を中心に後方へ回動しようとする。その際、揺動部材１４の横軸が固定されていると、鎌部材４の周端縁の一部２２と揺動部材１４の係止用部１６の側端面は支承・係止状態のままで、鎌部材４は後方へ回動しない。しかしここでは、揺動部材１４・軸受け部材２０が押しバネ２１に抗して降下可能であるから、鎌部材４は揺動部材１４を下方へ押し下げながら後方へ回動可能となる。
【００３３】
これにより、引き戸１を強い力で開けると、鎌部材４の後方への回動に伴って周端縁の一部２２と揺動部材１４の係止用部１６の側端面との支承・係止状態が徐々に外れていき（上記図７参照）、遂には両者２２，１６が離脱する。その後鎌部材４はバネ１１で後方への付勢力を受け、さらに後方へ回動して錠ケース３内へ没入する。その際の揺動部材１４は、下部の重り部１５の自重と、押しバネ２１による軸受け部材２０の上昇とにより、後方へ回動して垂下状となる。
これで、鎌部材４の先端部６の掛止状態が解かれると共に引き戸１が開かれることになり、挟まった衣服等２８を取り外せる。
【００３４】
ｅ）他面で、引き戸１の重さや引き戸１とレールとの滑り状態によっては、引き戸１を閉めた際の衝突によるバウンド力が大きくなり過ぎて、バネ１１の力が弱いと掛止部材８に一旦掛止された鎌部材４の先端部６が外れ、引き戸１が開いてしまうような場合がある。逆に、引き戸１がバウンドで開かぬようにバネ１１の力を強くしてあると、老人・子供等が引き戸１を開けようとしても、鎌部材４が後方へ回動しない場合がある。
それを防止するため、本発明の上記第２のものでは、鎌部材４を前方または後方へ押圧するバネ１１を圧縮コイルバネとし、該バネ１１の他端部１３を、錠ケース３下部寄りの軸２５で軸支のバネ受け部材２６に螺合させたバネ力調節ネジ２７上端に掛止させてあり、該バネ力調節ネジ２７を、錠ケース３外から回動操作可能としてある。
【００３５】
これにより、引き戸１を閉めた際に大きくバウンドし、一旦掛止された鎌部材４の先端部６が外れ、不用意に引き戸１が開いてしまうような場合は、上記バネ力調節ネジ２７を回動させて、バネ１１の力を現状より強めに設定すればよい。これで、一旦掛止部材８に掛止された鎌部材４は、前方へのより強いバネ力を受けることになり、先端部６の掛止状態が外れ難くなるから、バウンドで引き戸１が開くようなことを無くせる。
逆に、バネ１１の力が強過ぎて引き戸１を開けようとしても、鎌部材４が後方へ回動せず開けられない場合は、バネ力調節ネジ２７を上記とは逆方向に回動させ、バネ力を現状よりも弱めに設定すればよい。これで、バネ１１の力が弱くなるから、比較的小さい力で引き戸１を開けられるようになる。
【００３６】
【実施例】
図１ないし図７は、本発明に係る引き戸用鎌錠の第１のものの実施例を示すもので、錠ケース３は多くの引き戸用鎌錠と同様に、引き戸１の前側部に形成した凹所内に、その前面板４６が露出するように内蔵して取付けられている（図１参照）。
上記錠ケース３内の前上部寄りに、鎌部材４がその基部を支軸５で回動可能に軸支して設けてある。該鎌部材４は、先端部６が錠ケース３の前面板４６の開口から出て、戸枠体２の前側部に取り付けた掛止金具７内へ係合し、上部寄りに設けた掛止部材８に掛止可能としてある。
【００３７】
また該鎌部材４の支軸５は、錠ケース側板１８に形成した前後方向の長孔３３に係合させてあり、その上部寄りに設けた短いねじりコイルバネ５２で常時は該長孔３３の前部寄りへ付勢されている。
錠ケース３内の下部寄りには、トリガー９を前後方向へ移動可能に設けて、後記作動部材１０を介して後記バネ１１の付勢を受け、周知のものと同様に常時は先部寄りが錠ケース３の前面板４６の孔から突出しており、戸枠体２の前面に当接して押された際に、錠ケース３内へ後退・没入可能としてある。
【００３８】
上記鎌部材４とトリガー９間には、板状の作動部材１０を連結させてあるが、後記揺動部材１４を避けて略くの字状をしている。即ち該作動部材１０は、下部寄り部分を錠ケース３に固定の軸２５で回動可能に軸支してあり、上部寄りに突設したピン３４を鎌部材４中央部寄りに形成の長孔３５に係合させて連結し、下部に形成した二股状部３６を、トリガー９後部寄り側部に突設したピン３７を係合させて連結してある。なお、該ピン３７の側端部は、錠ケース側板１８に形成したガイド用長孔３８に係合させて、トリガー９の出入をガイドしている。
【００３９】
上記鎌部材４には、該鎌部材４が一定位置から前方へ回動時に前方へ付勢し、後方へ回動時に後方へ付勢する如くバネ１１を設けてある。ここでは、バネ１１としてねじりコイルバネを用いており、該バネ１１の一端部１２を、鎌部材４の先端部６が掛止部材８へ掛止状態時の該鎌部材４の支軸５の下方位置にバネ掛止ピン３９にて取付け（例えば上記図４参照）、該ピン３９の中心点をＱとする。そして該ねじりコイルバネ１１の他端部１３は、ここでは上記作動部材１０を軸支する軸２５に掛止させてあり、該軸２５の中心点をＰとしてある。
【００４０】
上記バネ１１は一定の基準線Ｌ、即ち鎌部材４の支軸５の中心とバネ１１の他端部１３を掛止した軸２５とを結ぶ線を境にして、バネ１１の一端部１２の中心位置Ｑが該基準線Ｌよりも前方（掛止金具７のある方向、例えば上記図４で左方向）にある際には、バネ力は鎌部材４を前方へ回動させるように付勢し、該基準線Ｌよりも後方（錠ケース３の奥側への方向、例えば上記図２で右方向）にある際には、鎌部材４を後方へ回動させるように付勢している。
上記バネ１１は、上記の如くねじりコイルバネを用いるのに限らず、図８で示すように、バネ力調節ネジ２７を設けるか否かは別として、圧縮コイルバネを用いてもよい。
【００４１】
上記トリガー９は、ここでは前部寄り部分４４と後部寄り部分４５との２部品で構成してある。これは、引き戸１と戸枠体２間に衝突音減少用のクッション材（図示略）を装着した場合に、その厚みで生じる間隙分だけ余分に突出可能とするためである。
そして、上記鎌部材４の下方位置に、下部に重り部１５を有すると共に前上部寄りに係止用部１６をもつ揺動部材１４を設けてあり、引き戸１を閉めた際の慣性力で下部の重り部１５が前方へ揺動し、その後自重で後方へ揺動可能としてある。即ち、該揺動部材１４は、引き戸１を閉めて鎌部材４の先端部６が掛止部材８へ掛止状態時に、慣性力で重り部１５が前方へ揺動することにより、前上部寄りの係止用部１６の側端面が鎌部材４の周端縁の一部２２の後下部へ来て、後下方から一瞬間だけ支承可能となるものである。
【００４２】
ここでの揺動部材１４は、上部寄り部分に縦断面ほぼ円形状の軸支部４０を形成して横軸１７を通挿してあり、該軸支部４０の前上部の側端面を鎌部材４の周端縁の一部２２を支承可能な係止用部１６とすると共に、該軸支部４０の下部を後側方から切り欠いた縦長状の凹所４１とし、かつ前側の垂下状部４２を介して下部に重り部１５を形成してある（図３参照）。
また、上記軸支部４０の横軸１７は錠ケース側板１８に軸支するのではなく、昇降可能な別体の軸受け部材２０で軸支させてある。即ち該軸受け部材２０は、ここでは合成樹脂製とし、揺動部材１４の縦長状の凹所４１が前方から係合可能に半分程度の高さで、その上部に上記軸支部４０の下半部を可回動に支承可能な縦断面半円形状の凹溝５３を前後方向へ形成し、かつ横軸１７を可回動に支承可能な軸受け溝５４を左右方向へ形成してある（上記図３参照）。
【００４３】
該軸受け部材２０は、錠ケース側板１８の前部寄りに形成した縦長溝１９に沿って昇降可能であると共に、該軸受け部材２０の下端と縦長溝１９下端を折り返したバネ受け片２３との間で、上方へ付勢する押しバネ２１を介装させてある。
該押しバネ２１のバネ力は、引き戸１のバウンド力が鎌部材４を後方へ回動させようとする程度の力では、揺動部材１４・軸受け部材２０が降下しないが、引き戸１を強い力で開ける際には、鎌部材４が後方へ回動しようとして周端縁の一部２２で該揺動部材１４・軸受け部材２０を押し下げ得る程度の力である。４３は軸受け部材２０下方に突設したバネガイドを示す。
【００４４】
上記揺動部材１４の係止用部１６の側端面は、上記横軸１７を中心に回動して鎌部材４の周端縁の一部２２へ下方から係合可能に凸円弧状に形成し、それに対応して鎌部材４の後下部の周端縁の一部２２は、凹円弧状に形成してある。
なおこの実施例では、鎌部材４の先端部６は、引き戸１を開けた際に鎌部材４が後方への回動をよりスムーズに行えるように、側面図でみて円弧状に形成してあり、また掛止部材８は、鎌部材４の先端部６が掛止される側の下半部を、下部寄りほど鎌部材４が後退する方向へ傾斜状に形成してある。
【００４５】
また、錠ケース３の前面板４６と戸枠体２の掛止金具７との間で、取付け時やその後の上下位置関係を適切に設定するために、前面板４６の一部に位置決め用突起４７を突設し、掛止金具７に上記突起４７が係合可能な位置決め用凹所４８を形成し、かつ該掛止金具７の戸枠体２への取付用孔４９を上下方向へ長孔に形成してある。
さらに、上記掛止金具７の掛止部材８は、回動可能な調節ネジ５０により、その位置を前後方向へ可変としてある。これは、クッション材を装着し閉戸時に間隙が生じる場合に、トリガー９の前部寄り部分４４を前方へ突出させるのに対応して、上記間隙に相当する分だけ該掛止部材８を前方へ移動可能としたものである。
【００４６】
仮施錠状態の鎌部材４を本施錠状態にするには、ここではトリガー９の後部寄り部分にロック用係止部２９を形成すると共に、室内側の施錠操作部３０の操作で作動して、後退位置にあるトリガー９のロック用係止部２９へ係合可能にロック部材３１を設けてある。
他方、図８ないし図９は、本発明に係る引き戸用鎌錠の第２のものの実施例を示すが、これは上記本発明の第１のものを含む構成であるため、上記第１のものと共通する点は説明を簡略にし、共通の符号を付して示す。
【００４７】
ここでも鎌部材４の下方位置に、揺動部材１４を設けてある。即ち、鎌部材４の下方位置に、下部に重り部１５を有すると共に前上部寄りにここでは前方へ腕片状の係止用部１６をもつ揺動部材１４を設けてあり、引き戸１を閉めて鎌部材４の先端部６が掛止部材８へ掛止状態時に、慣性力で重り部１５が前方へ揺動することにより、前上部寄りの係止用部１６の側端面が鎌部材４の周端縁の一部２２の後下部へ来て、後下方から一瞬間だけ支承可能となるものである。
ここでの揺動部材１４も、上部寄り部分に縦断面ほぼ円形状の軸支部４０を形成して横軸１７を通挿してあり、該軸支部４０の前上部の側端面を鎌部材４の周端縁の一部２２を支承可能な係止用部１６とすると共に、該軸支部４０の下部を後側方から切り欠いた縦長状の凹所４１とし、かつ前側の垂下状部４２を介して下部に重り部１５を形成してある（上記図３参照）。
【００４８】
また、上記軸支部４０の横軸１７は、ここでも錠ケース側板１８に軸支するのではなく、昇降可能な別体の軸受け部材２０で軸支させてある。即ち該軸受け部材２０は、ここでは合成樹脂製とし、揺動部材１４の縦長状の凹所４１が前方から係合可能に半分程度の高さで、その上部に上記軸支部４０の下半部を可回動に支承可能な縦断面半円形状の凹溝５３を前後方向へ形成し、かつ横軸１７を可回動に支承可能な軸受け溝５４を左右方向へ形成してある（上記図３参照）。
該軸受け部材２０は、錠ケース側板１８の前部寄りに形成した縦長溝１９に沿って昇降可能であると共に、該軸受け部材２０の下端と縦長溝１９下端を折り返したバネ受け片２３との間で、上方へ付勢する押しバネ２１を介装させてある。
【００４９】
そして鎌部材４には、該鎌部材４が一定の基準線Ｌから前方へ回動時に前方へ付勢し、後方へ回動時に後方へ付勢する如くバネ１１を設けてあるが、該バネとしてここでは圧縮コイルバネ１１を用いており、かつバネ力調節ネジ２７を設けてある。
即ち、鎌部材４の先端部６が掛止部材８へ掛止状態時の該鎌部材４の支軸５の下方位置に、連結ピン５１で連結部材２４を設けて、圧縮コイルバネ１１の一端部１２を該連結部材２４の下端部に掛止させ、該連結ピン５１の中心点をＱとしてある。
【００５０】
他方圧縮コイルバネ１１の他端部１３は、錠ケース側板１８後下方に設けた軸２５で軸支させたバネ受け部材２６のバネ力調節ネジ２７の上端部に掛止させてあり、この場合も上記軸２５の中心点をＰとしてある。
上記バネ受け部材２６は、側面図でみてＬ形状で、その縦片部に形成した丸孔を上記軸２５に可回動に軸支させてあり、横片部に雌ネジ孔５５を形成して、そこにバネ力調節ネジ２７の雄ネジ部を螺合させてある（図９参照）。該バネ力調節ネジ２７は、上部の頭部５６外周にローレット加工を施し、錠ケース側板１８の窓孔（図示略）から回動調節操作可能としてある。
【００５１】
また上記バネ力調節ネジ２７は、中央に通孔を有しており、上記連結部材２４の下端部から下方へ設けた通挿ロッド３２を遊貫させており、上記圧縮コイルバネ１１は該通挿ロッド３２でガイドされるように外周に設けてある。
この場合の圧縮コイルバネ１１も、一定の基準線Ｌ、ここでは鎌部材４の支軸５の中心と該バネ１１の他端部１３を掛止したバネ力調節ネジ２７を支承するバネ受け部材２６の軸２５とを結ぶ線を境にして、上記連結部材２４を軸支した連結ピン５１の中心点Ｑが、該基準線Ｌよりも前方（掛止金具７のある方向、例えば図８で左方向）にある際に、鎌部材４を前方へ回動させるように付勢し、また後方（錠ケース３の奥側への方向、例えば図８で右方向）にある際に、鎌部材４を後方へ回動させるように付勢している。
【００５２】
なお、バネ力調節ネジ２７を支承するバネ受け部材２６を軸支する軸２５は、この図示例と異なり、本発明の第１のものを示す上記実施例のように、作動部材１０を可回動に軸支する軸に軸支させてもよく（例えば上記図２参照）、この場合はその軸の中心点をＰとする。
また、この実施例で本施錠状態にするには、室内側の施錠操作部３０で作動させるロック部材３１を、ここでは上記バネ受け部材２６上部寄りのロック用係止部２９に掛止させて、該バネ受け部材２６の後方への回動を阻止し、連結部材２４を介して鎌部材４の回動を阻止させるようにしてある。この点も、本発明の第１のものを示す上記実施例のように、トリガー９にロック用係止部３１を形成して掛止させてもよい。
【００５３】
【発明の効果】
以上で明らかな如く、本発明に係る引き戸用鎌錠は、引き戸の閉または開で自動的に仮施錠または解除される構造の引き戸用鎌錠において、引き戸を開けた際に仮施錠状態が自動的に解除される機能を害することなく、引き戸のバウンド防止を確実に行えると共に、軽い力で引き戸を開けることができ、かつ引き戸を閉めた際に戸枠体との間で衣服等が挟まっても、仮施錠を確実に解除して取り外すことができる。
【００５４】
即ち、従来も引き戸を開ける際に仮施錠状態が自動的に解除され、引き戸を閉じた際のバウンドを防止した引き戸用鎌錠は有った。
しかし、引き戸が軽かったり敷居・レール等との滑りが良過ぎるとバウンドが大きくなり、引き戸を閉めた際に一旦掛止された鎌部材の先端部がバネの力に打ち勝って掛止部材から外れ、バウンドを防止できず引き戸が開いてしまった。
また上記バネ等の力を強くすると、鎌部材が後方へ回動し難くなり、老人・子供等が容易に引き戸を開けられなくなり、かつ引き戸を開けることで仮施錠状態が自動解除される機能を損なったりした。さらに、引き戸を閉めた際に衣服等が挟まると、鎌部材が後方へ回動し難くなり、先端部が掛止部材から外れ難くて引き戸を開けられず、衣服等を取り外せない場合があった。
【００５５】
イ）これに対して、本発明の引き戸用鎌錠の第１のものでは、鎌部材の周端縁の一部を支承して後方への回動を阻止している揺動部材を、慣性力で揺動可能に設けた構成により、引き戸を閉めた際にバウンド力で鎌部材が後方へ回動し、先端部の掛止状態が解かれ引き戸が開かれようとしても、その際の慣性力で揺動部材の係止用部が、一旦掛止状態になった鎌部材の周端縁の一部を一瞬間だけ支承し、後方への回動を阻止する。
そのため、引き戸を閉めた際のバウンド力で鎌部材が後方へ回動しようとしても、鎌部材の後方への回動は確実に阻止されているから、鎌部材先端部の掛止部材との掛止状態が確実に維持されて、引き戸がバウンドで不用意に開くようなことは確実に防止できる。
【００５６】
同じく本発明の第１のものでは、鎌部材の周端縁の一部を支承して後方への回動を阻止している揺動部材が、押しバネに抗して降下可能としてある。これで、引き戸を閉めた際に衣服等が挟まれ、鎌部材の周端縁の一部と揺動部材の係止用部との支承状態が強くて係止状態となっても、引き戸を強く開ければ、揺動部材を押下げながら鎌部材は後方へ回動可能となる。
そのため、鎌部材は揺動部材による支承状態・係止状態が解かれたのと同じことになり、鎌部材が後方へ回動して先端部が掛止部材との掛止を解かれ、引き戸が開けられて、挟まっていた衣服等を取り外せるようになる。
【００５７】
ロ）本発明の引き戸用鎌錠の第２のものでは、鎌部材を前方または後方へ押圧するバネを圧縮コイルバネとし、該バネのバネ力を錠ケース外から調節可能としてある。
そのため、引き戸を閉めた際に大きくバウンドし、一旦掛止された鎌部材の先端部が外れて引き戸が開くような場合は、バネ力調節ボルトでバネ力を現状より強めに設定することができ、バウンドで引き戸が開くことを無くせる。逆にバネ力が強過ぎて引き戸を開けられない場合は、バネ力調節ボルトを逆方向に回動させ、バネ力を現状よりも弱めに設定することができ、老人等でも軽い力で引き戸を開けられるようにできる。
【００５８】
ハ）この本発明の引き戸用鎌錠の第２のものでは、上記第１の構成をもつから、その効果も上記第１のものを併せ有することになり、引き戸を閉めた際のバウンド力で、引き戸が開くようなことを確実に防止できるし、引き戸を閉めた際に衣服等を挟んでも、引き戸を強く開けることで鎌部材は後方へ回動でき、引き戸が開けられるし、衣服等を取り外すことができる。
また、前述したように、引き戸を閉めた際のバウンド力が大きく、引き戸が開くような場合は、錠ケース外からバネ力調節ネジを操作してバネ力を現状より強めにして、バウンドで引き戸が開かぬようにできると共に、バネ力が強過ぎて引き戸を開けられない場合は、バネ力調節ボルトでバネ力を現状よりも弱めにして、老人等でも軽い力で引き戸を開られるようにできる。
【図面の簡単な説明】
【図１】本発明に係る引き戸用鎌錠の実施例を示す一部切り欠き側面図である。
【図２】本発明の第１のものの実施例で、開戸時の状態を示す縦断側面図である。
【図３】本発明の第１のものの実施例で、揺動部材近傍の分解斜視図である。
【図４】本発明の第１のものの実施例で、閉戸直後に揺動部材が鎌部材の周端縁の一部を支承する状態を示す縦断側面図である。
【図５】本発明の第１のものの実施例で、閉戸後に揺動部材が鎌部材の周端縁の一部から離れた施錠状態を示す縦断側面図である。
【図６】本発明の第１のものの実施例で、閉戸時に衣服等が挟まれた状態を示す縦断側面図である。
【図７】本発明の第１のものの実施例で、衣服等が挟まれた際に引き戸を強く開けた状態を示す縦断側面図である。
【図８】本発明の第２のものの実施例で、閉戸直後に揺動部材が鎌部材の周端縁の一部を支承する状態を示す縦断側面図である。
【図９】本発明の第２のものの実施例で、バネ力調節ネジ近傍の分解斜視図である。
【符号の説明】
１−引き戸 ２１−押しバネ ４１−凹所
２−戸枠体 ２２−周端縁の一部 ４２−垂下状部
３−錠ケース ２３−バネ受け片 ４３−バネガイド
４−鎌部材 ２４−連結部材 ４４−前部寄り部分
５−支軸 ２５−軸 ４５−後部寄り部分
６−先端部 ２６−バネ受け部材 ４６−前板部
７−掛止金具 ２７−バネ力調節ネジ ４７−位置決め用突起
８−掛止部材 ２８−衣服等 ４８−位置決め用凹所
９−トリガー ２９−ロック用係止部 ４９−取付用孔
１０−作動部材 ３０−施錠操作部 ５０−調節ネジ
１１−バネ ３１−ロック部材 ５１−連結ピン
１２−一端部 ３２−通挿ロッド ５２−ねじりコイルバネ
１３−他端部 ３３−長孔 ５３−凹溝
１４−揺動部材 ３４−ピン ５４−軸受け溝
１５−重り部 ３５−長孔 ５５−雌ネジ孔
１６−係止用部 ３６−二股状部 ５６−頭部
１７−横軸 ３７−ピン Ｑ−一端部の位置
１８−錠ケース側板 ３８−ガイド用長孔 Ｐ−他端部の位置
１９−縦長溝 ３９−バネ掛止ピン Ｌ−基準線
２０−軸受け部材 ４０−軸支部[0001]
BACKGROUND OF THE INVENTION
In the present invention, when the sliding door is closed, the sickle member automatically comes out and is hooked to the latching member of the latching member of the door frame (referred to as a temporarily locked state or an empty-tightened state), and when the sliding door is opened The present invention relates to an improvement of a sickle lock for a sliding door that is automatically detached from a latching member and accommodated in a lock.
In particular, when the sliding door is closed, it bounces due to a collision with the door frame body, it is possible to reliably prevent the sickle member from coming off the locking member, and when opening the sliding door, it can be opened with a light force, and Even when clothes or the like are caught between the door frame when the sliding door is closed and the sickle member cannot be locked, the temporary locking state can be reliably released.
[0002]
[Prior art]
Sliding door sickle locks were once installed in sliding doors in Japanese-style houses, but recently they are often installed in sliding doors in private rooms such as baths, toilets, and study rooms. .
The sliding door sickle locks can be classified into several types according to applications and functions, etc., but can be broadly classified as follows.
a) First, after closing the sliding door, the sickle member is manually protruded to be hooked on the latching member of the door frame body, and also when opening the sliding door, the sickle member is manually detached from the latching member and inside the lock case. The sliding door is opened after being housed (see, for example, Japanese Utility Model Publication No. 5-47263).
[0003]
b) Secondly, when the sliding door is closed, the sickle member automatically comes out of the lock and hooks onto the locking member of the door frame, but when opening the sliding door, the sickle member is manually removed from the locking member and locked. The sliding door is opened after being housed in the case (see, for example, Japanese Utility Model Laid-Open Nos. 60-135460 and 7-26549).
c) Third, when the sliding door is closed, the sickle member automatically comes out of the lock, hooks onto the latching member of the door frame, and when the sliding door is opened, the sickle member automatically comes off the latching member. , And the like (see, for example, Japanese Patent Publication No. 56-33553, Japanese Utility Model Publication No. 3-24778, Japanese Patent Laid-Open No. 8-86132, etc.).
[0004]
Since the sickle lock for sliding doors of the present invention belongs to the third of the above c), they will be described in a little more detail.
(1) First, in Japanese Patent Publication No. 56-33553, a sickle member is pivotally supported in the lock case so that the tip part rotates in the forward and backward directions and can be freely inserted and removed, and the spindle of the sickle member is supported by the lock case. A pulling spring is provided that movably engages with the long hole in the front-rear direction, and the support shaft is normally urged backward, and a trigger is provided on the lock case so that the tip can be moved in and out. In addition, there is described that an operating member that rotates the sickle member forward when the trigger is retracted is connected between the trigger member and the sickle member, and a tension spring that normally biases the trigger forward is provided. In addition, it is also possible to hook the sickle member at the time of a temporary locking state by another lock lever, and to lock (it makes this locking state).
[0005]
This is because when the sliding door is closed, the protruding trigger hits the door frame and moves back into the lock case, so that the tip of the sickle member begins to rotate forward via the operating member linked to this, It is further rotated forward by the urging force of the spring, and is latched by the latching member of the door frame body to be in a temporarily locked state. In addition, when the sliding door is opened, the sickle member is pulled backwards with the tip part hitting the inner surface of the latching member, and then the sickle member is pulled forward, but when further pulled, the sickle member rotates backward about the support shaft. Then, it is detached from the latching member and immersed in the lock, and the temporary lock state is released.
[0006]
When the above sliding door is closed, the lock is locked with the sickle member, but the sickle member is pulled by the tension spring with the tip of the sickle member hooked to the retaining member, and the sliding door is moved to the door frame. Since it is pulled, the closed door state is maintained even when the door frame is inclined, and bounce (rebound) is prevented when the sliding door is closed.
(2) Next, what is described in Japanese Utility Model Publication No. 3-24778 is that the trigger protrudes from the door frame, and the structure thereof is that described in Japanese Patent Publication No. 56-33553. Is slightly different, but the trigger that retracts when the sliding door is closed retracts the first actuating member in the sickle lock, which causes the sickle member to rotate and project forward via the second actuating member, When the sliding door is closed, the first operating member released from the trigger moves forward, and the sickle member can be rotated backward against the torsion coil spring via the second operating member. is there. In addition, it is also possible to lock the sickle member in the temporarily locked state by another lock lever.
[0007]
When the above sliding door is closed, the lock is temporarily locked with a sickle member, but the sickle member is pulled backward by a torsion coil spring with the tip portion locked to the locking portion, and the sliding door is on the door frame body side. Therefore, the closed door state is maintained even when the door frame is inclined, and bounce when the sliding door is closed with a strong momentum is also prevented.
(3) Further, in claim 2 and drawing of Japanese Patent Laid-Open No. 8-86132, a trigger fitted in a lock case by a trigger spring so as to be able to protrude and retract, and a rack and a pinion formed between the triggers The locking part of the sickle member that is protruded by the trigger retraction and retracted by the protrusion of the trigger and the pivoting protrusion of the sickle member is locked by the operation of the unlocking / unlocking operation member. A locking piece that prevents the sickle member from retreating and is in a locked state. The trigger is formed with an engagement recess, and when the trigger is in the retracted position when the door is closed, the engagement recess is engaged. A stopper member that is urged by a spring is described.
[0008]
This is because the trigger moves backward when the sliding door is closed, so that the sickle member is rotated forward via the conversion mechanism, and the tip end portion is hooked on the hooking member of the door frame body to be temporarily locked. When the sliding door is opened, the sickle member whose tip is hooked on the latching member is forcibly pulled, so that the sickle member starts to rotate backward, but the trigger is moved forward by the conversion mechanism accordingly. In addition, the stopper member is also released from the engaging recess and protrudes forward, and at the same time, the sickle member is further rotated rearward and detached from the latching portion, and is immersed in the lock case to release the temporarily locked state.
[0009]
When the above sliding door is closed, the lock is locked with the sickle member, but the trigger in the retracted position is locked forward by the stopper member engaging with the engaging recess, and the conversion between rack and pinion The sickle member is also prevented from inadvertently rotating backward through the mechanism. Therefore, even when the door frame body is inclined, the closed door state is maintained, and bounce when the sliding door is closed with a strong momentum is prevented.
In addition, by operating the operation part on the indoor side, the locking / unlocking operating member is activated to lock the locking part of the sickle member in the temporarily locked state, and the backward rotation of the sickle member is prevented. Thus, the locked state can be achieved, and the locked portion can be released to return to the temporarily locked state.
[0010]
[Problems to be solved by the invention]
In the conventional sickle lock for sliding doors in consideration of bounce prevention, the sickle member is pulled backward with a tension spring or torsion coil spring like the lock shown in (1) and (2) above, and the sliding door is pulled toward the door frame body side. By pressing the stopper member that locks the trigger with a spring like the lock shown in the above, and closing the sliding door, the sickle member that is once hooked on the locking member of the door frame body is bound by the sliding door. It is designed not to accidentally rotate backward and come off.
[0011]
By the way, the size of the bound when the sliding door is closed varies depending on, for example, the weight of the sliding door and the relationship between the sliding door and the sill or rail. For example, if the sliding door is light, or if the sill or rail is slippery, the sliding door will bounce greatly and move in the opening direction. Therefore, when the sliding door bounce is large, the sickle member rotates backward against the spring or the trigger moves forward in the same manner as when the temporary locking state is automatically released when the sliding door is opened. And the front-end | tip part of a sickle member may remove | deviate from a latching member.
[0012]
Therefore, in the conventional sickle locks shown in (1), (2), and (3) above, in order to cope with a large bounce, a tension spring or a torsion coil spring that pulls the sickle member backward, or a spring that presses the stopper is preliminarily provided. It is conceivable to design the spring with a strong spring force. This can certainly prevent the sickle member from rotating inadvertently by the force of the spring, even if the sliding door is about to bounce, and can suppress the bounce.
However, it is necessary to pull the sliding door with a large force to overcome the strong spring force in order to rotate the sickle member whose front end is hooked to the latching member when opening the sliding door. For example, the key feature of this lock is that it is impossible for the sick, the elderly, and children to open the sliding door with the sickle lock for sliding doors, and the temporary locking state can be automatically released by opening the sliding door. There is a problem of losing.
[0013]
Furthermore, among the above, when the tip of the sickle member is hooked on the hooking member with clothes or the like sandwiched between the door frame when the sliding door is closed, the hooking of the hooking member In some cases, the stopped state could not be released.
The present invention was developed to solve the above problems with a simple configuration in a sickle lock for a sliding door that is automatically locked or unlocked by closing or opening the sliding door. Is. That is, the object of the present invention is to reliably prevent the sliding door from bouncing without harming the function of automatically releasing the temporary locking state when the sliding door is opened, and to open the sliding door with a light force, and An object of the present invention is to provide a sickle lock for a sliding door that can be surely released from the temporarily locked state even when clothes or the like are sandwiched between the door frame when the sliding door is closed and the hook of the sickle member cannot be removed.
[0014]
[Means for Solving the Problems]
A The first one of the sickle locks for sliding doors according to the present invention is:
In the lock case 3 of the sliding door 1, a trigger 9 that retreats by contact with the door frame 2 when the door is closed, an actuating member 10 that rotates the sickle member 4 forward at the time of retraction, and a forward rotation. A sickle member 4 whose tip 6 can be hooked to a latching member 8 of a latching member 7 of the door frame 2 and a spring 11 that urges the sickle member 4 forward or backward with a certain reference line L as a boundary. In the sickle lock for sliding doors with
At the lower position of the sickle member 4, a swing member 14 having a weight portion 15 at the lower portion and a locking portion 16 at the upper portion is provided so as to be swingable forward by the inertial force when the sliding door 1 is closed. Then, a part 22 of the peripheral edge of the sickle member 4 immediately after the hooking member 8 is hooked can be supported only for a moment,
Further, the horizontal shaft 17 of the swing member 14 is supported by a bearing member 20 that can be moved up and down, and is supported by a push spring 21 that biases the bearing member 20 upward.
[0015]
B The second one of the sickle locks for sliding doors according to the present invention is:
In the lock case 3 of the sliding door 1, a trigger 9 that retreats by contact with the door frame 2 when the door is closed, an actuating member 10 that rotates the sickle member 4 forward at the time of retraction, and a forward rotation. A sickle member 4 whose tip 6 can be hooked to a latching member 8 of a latching member 7 of the door frame 2 and a spring 11 that urges the sickle member 4 forward or backward with a certain reference line L as a boundary. In the sickle lock for sliding doors with
At the lower position of the sickle member 4, a swing member 14 having a weight portion 15 at the lower portion and a locking portion 16 at the upper portion is provided so as to be swingable forward by the inertial force when the sliding door 1 is closed. In addition, the part 22 of the peripheral edge of the sickle member 4 immediately after the hooking member 8 is hooked can be supported only for a moment,
The horizontal shaft 17 of the swing member 14 is supported by a bearing member 20 that can be raised and lowered, and the bearing member 20 is supported by a push spring 21 that biases upward.
The spring 11 for biasing the sickle member 4 is a compression coil spring, and the other end 13 is supported by a spring force adjusting screw 27 provided near the lower part in the lock case 3, and the spring force adjusting screw 27 is The rotation can be adjusted from the outside of the lock case 3.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
In the first configuration of the present invention, the spring 11 that presses the sickle member 4 forward or backward may be a torsion coil spring like many conventional sliding door sickle locks (FIGS. 2, 4 to 4). (See Fig. 7) 2 As shown, it may be a compression coil spring (see FIG. 8).
In the case where the spring 11 is a torsion coil spring or the spring 11 is not adjusted by a compression coil spring, the one end 12 of the spring 11 is connected to the spindle of the sickle member 4 when the tip 6 is hooked to the hooking member 8. 5, and the other end 13 of the spring 11 may be hooked on a shaft near the lower portion of the lock case 3, for example, a shaft 25 that pivotally supports the operating member 10 ( (See FIGS. 2 and 4 to 7 above).
[0017]
In the case where a compression coil spring is used as the spring 11 and the spring force can be adjusted, the one end portion 12 is provided, for example, at a position below the support shaft 5 of the sickle member 4 when the distal end portion 6 is hooked to the hooking member 8. The other end 13 may be hooked on a spring force adjusting screw 27 screwed to a shaft receiving spring 26 on a shaft 25 near the bottom of the lock case 3, for example. (See FIG. 8).
Here, the shaft 25 near the lower portion of the lock case 3 may be a shaft that pivotally supports the actuating member 10, for example, as described above, but does not hinder the movement of the actuating member 10, the trigger 9, and the swing member 14. Another axis provided at the position may be used (see FIG. 8 above).
[0018]
1st to above Second The spring 11 has a constant reference line L, that is, a line connecting the spindle 5 of the sickle member 4 and the other end 13 of the spring 11 as a boundary, and the center position Q of the one end 12 of the spring 11 is When in front of the reference line L (in the direction in which the latch 7 is located, for example, in the left direction in FIG. 4), the spring force urges the sickle member 4 to rotate forward, and the reference line L When it is behind (in the direction toward the back side of the lock case 3, for example, in the right direction in FIG. 2), the sickle member 4 is urged to rotate backward.
1st or above Second In the lower part of the sickle member 4, the weight part 15 is provided at the lower part, the locking part 16 is provided near the upper part, and the swinging is possible to swing forward by the inertial force when the sliding door 1 is closed. A member 14 is provided. The locking portion 16 near the upper portion of the swinging member 14 is provided in the front portion so that the position of the locking portion 16 rotates further upward when the weight portion 15 swings forward. It is desirable to keep it.
[0019]
The relationship between the part 22 of the peripheral edge of the sickle member 4 and the locking portion 16 of the swinging member 14 is that the sliding door 1 is closed and the distal end portion 6 of the sickle member 4 is the latching member 8 of the door frame 2. When the hook is in the hooked state, the locking portion 16 of the swinging member 14 in which the lower weight portion 15 swings forward due to the inertial force makes the part 22 of the peripheral edge of the sickle member 4 one part. The moment is supported (see FIG. 4), and when the weight portion 15 swings backward by its own weight, the locking portion 16 releases the support state from the part 22 of the peripheral edge of the sickle member 4 ( FIG. 5).
1st or above Second The horizontal shaft 17 of the oscillating member 14 is not directly supported by the lock case side plate 18 but supported by a bearing member 20 that can be raised and lowered, and is urged upward at the lower portion of the bearing member 20. A pressing spring 21 is provided.
[0020]
When the sliding door 1 is opened with a strong force, the spring force of the pressing spring 21 is such that the swinging member 14 that receives the pressing force due to the backward rotation of the sickle member 4 can be lowered together with the bearing member 20. Is. In other words, with the force that the bounding force of the sliding door 1 tries to rotate the sickle member 4 backward, the spring force is such that the swinging member 14 and the bearing member 20 are not lowered.
Above 2 In the thing, the spring 11 which urges | biases the said sickle member 4 to the front or back is used as a compression coil spring. One end 12 of the compression coil spring 11 is hooked to the lower end of a connecting member 24 provided at a position below the spindle 5 of the sickle member 4 when the tip 6 is hooked to the hooking member 8, and the other end 13. Is preferably hooked on the upper end of a spring force adjusting screw 27 that is screwed to a spring receiving member 26 of a shaft support by a shaft 25 near the lower part in the lock case 3. The spring force adjusting screw 27 can be rotated from the outside of the lock case 3.
[0021]
1st or above Second The part 22 of the peripheral edge of the sickle member 4 is a part that is supported by the locking portion 16 of the swing member 14. A portion 22 of the peripheral portion is engaged so that the locking portion 16 supported for a moment by the forward swing of the weight portion 15 can be smoothly separated from the rear portion by the backward swing of the weight portion 15. Corresponding to the trajectory when the side end surface of the stopping portion 16 swings, it is preferable to form it in an arcuate concave portion as seen in the side view.
In order to bring the sickle member 4 into the locked state, for example, a locking engagement portion 29 is formed near the rear portion of the trigger 9 and the locking engagement portion 29 of the trigger 9 in the retracted position is hooked. Therefore, it is only necessary to provide a lock member 31 that can be operated by the operation of the locking operation unit 30 on the indoor side (see FIGS. 1 and 5).
[0022]
However, in a case where a compression coil spring is used as the spring 11 and the spring force adjusting screw 27 is provided, the spring receiving member 26 into which the spring force adjusting screw 27 is screwed can be operated by operating the locking operation unit 30 on the indoor side. The lock member 31 may be engaged (see FIG. 8).
In the figure, reference numeral 28 denotes clothes and the like, and 32 denotes an insertion rod when the spring 11 is a compression coil spring.
The operating state of the sickle lock for sliding doors according to the present invention is as follows.
[0023]
a) The first through the present invention Second In any of the above, in the state in which the sliding door 1 is opened, the sickle member 4 is rotated backward to be immersed in the lock case 3, and the trigger 9 corresponds to the sickle member 4 in that state. 10 is pushed forward and protrudes forward from the hole of the front plate 46 of the lock case 3.
When the sliding door 1 is closed, first, the tip of the trigger 9 comes into contact with the front surface of the door frame 2 and starts to retract. As the trigger 9 moves backward, the actuating member 10 connecting the sickle member 7 pushes the sickle member 4 forward against the spring force of the spring 11 with one end 12 attached to the sickle member 4, and rotates. Start letting.
[0024]
With the forward rotation of the sickle member 4, the position Q of the one end 12 of the spring 11 comes forward from the reference line L connecting the support shaft 5 of the sickle member 4 and the other end 13 of the spring 11. Then, the spring force biases the sickle member 4 in the direction of rotating forward. Therefore, the sickle member 4 is automatically rotated further forward, and the tip end portion 6 enters the latch metal 7 of the door frame body 2 and is latched by the latch member 8. Thus, it is temporarily locked.
In order to further change the temporary locking state to the actual locking state, the lock operation portion 30 on the indoor side is operated, and the lock member 31 is engaged with the locking engagement portion 29 of the trigger 9 at the retracted position. The sickle member 4 is prevented from rotating through the operating member 10 connected to the trigger 9 (see FIG. 5). Alternatively, it may be engaged with the locking latching portion 29 of the spring receiving member 26 to prevent the spring receiving member 26 from rotating and prevent the sickle member 4 from rotating backward (see FIG. 8).
[0025]
b) First to thirteenth aspects of the present invention Second When the sliding door 1 is opened, if the sliding door sickle lock is temporarily locked, the sliding door 1 may be opened as it is. If the sliding door 1 is in the locked state, the locking operation unit 30 is operated to operate the lock member 31. After unlocking the door, the sliding door 1 may be opened.
When the sliding door 1 is opened, the support shaft 5 of the sickle member 4 moves backward together with the sliding door 1 and the lock case 3 while the distal end portion 6 of the sickle member 4 is hooked on the latching member 8 of the latching bracket 7. Since it moves away from the locking member 8, the sickle member 4 finally starts to rotate backward about the support shaft 5, and the tip end portion 6 comes off the latching member 8.
[0026]
By rotating the sickle member 4 backward, the one end 12 of the spring 11 comes to a position behind the reference line L, that is, the line connecting the support shaft 5 of the sickle member 4 and the other end 13 of the spring 11. Then, the spring force changes from the state in which the sickle member 4 has been urged forward until the state in which it is urged backward. As a result, the sickle member 4 is further rotated rearward about the support shaft 5 and is automatically immersed in the lock case 3 to be unlocked (see FIG. 2).
c) By the way, when the sliding door 1 is closed, the sliding door 1 bounces (bounces back) due to the collision with the door frame 2, the tip portion 6 of the sickle member 4 comes off from the latching member 8, and the sliding door 1 opens. is there. Normally, if the tip portion 6 of the sickle member 4 is hooked on the hooking member 8, the sickle member 4 is biased forward by the spring 11, so that the sickle member 4 is It does not rotate rearward, the latching of the tip 6 is not removed, and the sliding door 1 is not opened.
[0027]
However, if the force to close the sliding door 1 is too strong, the sliding door 1 is light, or the sliding between the door wheel and the rail is too good, the bounce force due to the collision with the door frame 2 when the sliding door 1 is closed is large. Become. Even if the distal end portion 6 of the sickle member 4 is once hooked on the hooking member 8, if the bounce force is larger than the force of the spring 11, the sickle member 4 moves the support shaft 5 in the same manner as when the sliding door 1 is opened. The tip 6 starts to turn to the center, and finally the tip 6 is detached from the latching member 8 and the sliding door 1 is opened.
In order to prevent this, the above first or Second In this case, a swinging member 14 having a weight portion 15 at the lower portion and a locking portion 16 near the upper portion is pivotally supported by a horizontal shaft 17 at a position below the sickle member 4 and the sliding door 1 is closed. The swinging member 14 that swings due to the inertial force can support a part 22 of the peripheral edge of the sickle member 4 immediately after being locked to the locking member 8 by the locking portion 16 for only one moment. It is as.
[0028]
Thereby, when the sliding door 1 is closed, the sickle member 4 is rotated forward as described above, and the distal end portion 6 is hooked to the hooking member 8 and at the same time, the inertial force when the sliding door 1 is closed. The swinging member 14 (see FIG. 2) in the suspended state swings the lower weight portion 15 forward. Therefore, the locking portion 16 closer to the upper part of the swinging member 14 rotates further upward, and its side end surface comes to the rear lower side of a part 22 of the peripheral end edge of the sickle member 4, and the peripheral end edge The part 22 of the motor is supported from the rear lower side for a moment (see FIGS. 4 and 8).
As a result, even if the sliding door 1 bounces back due to a collision with the door frame body 2 and the sickle member 4 tries to rotate backward, the latching portion 16 of the swinging member 14 is located below the sickle member 4. The sickle member 4 is prevented from rotating backward, and the hooking state of the tip 6 on the hooking member 8 remains the same, and the sliding door 1 opens by bouncing. There is no such thing.
[0029]
In the above description, the sickle member 4 is prevented from rotating by the locking portion 16 for only one moment, and the swinging member 14 immediately swings backward due to its own weight. The close locking portion 16 immediately turns to the front and lower, leaves the rear lower portion 22 of the peripheral edge of the sickle member 4, and the support state is released (see FIG. 5).
In the above case, since the sickle member 4 is always urged upward by the spring 11, the part 22 of the peripheral edge of the sickle member 4 and the side end surface of the locking portion 16 of the swinging member 14. A slight gap is generated between them, and there is no problem in that the swinging member 14 swings backward by the weight of the weight portion 15 and the locking portion 16 rotates forward and downward.
[0030]
Thereafter, when the sliding door 1 is opened, the sickle member 4 is not supported by the locking portion 16 of the swinging member 14 (see FIG. 5 above) and is light as in the case without the swinging member 14. The sliding door 1 can be opened with force, and even the elderly and children can easily release the temporary lock.
d) Next, when the sliding door 1 is closed as described above, clothes 28 and the like may be sandwiched between the door frame body 2 and the like.
At that time, the sliding door 1 has moved slightly backward as much as the clothes 28 are sandwiched, and a force to rotate the sickle member 4 slightly backward acts, so that the sickle member as described above. Even when 4 is urged upward by the spring 11, no gap is formed between the peripheral edge portion 22 of the sickle member 4 and the side end surface of the locking portion 16, and the supporting state is strengthened and locked. It is in a state.
[0031]
In this case, even if the swinging member 14 swings backward due to the weight of the weight portion 15, the swinging member 14 cannot swing, so that the support / locking state with respect to the sickle member 4 is maintained. Thus, if the sickle member 4 cannot rotate backward, even if it pulls back so that the sliding door 1 may be opened, the front-end | tip part 6 of the sickle member 4 will not be latched to the latching member 8 (refer FIG. 6). .
In order to cancel such a state, the above first or Second In this embodiment, the bearing member 20 that supports the horizontal shaft 17 of the swinging member 14 can be moved up and down, and is supported by a push spring 21 that urges the lower portion of the bearing member 20 upward.
[0032]
Therefore, when a strong force is applied in the direction in which the sliding door 1 is opened, the sickle member 4 hooked by the hooking member 8 on the distal end portion 6 tries to rotate backward as described above, and the peripheral edge of the sickle member 4 is The part 22 presses the side end surface of the locking portion 16 of the swing member 14. At this time, the swing member 14 moves down together with the bearing member 20 that supports the horizontal shaft 17 against the spring force of the push spring 21 (see FIG. 7).
That is, when the sliding door 1 moves in the opening direction, the sickle member 4 tries to rotate backward about the support shaft 5. At this time, if the horizontal axis of the swinging member 14 is fixed, a part 22 of the peripheral edge of the sickle member 4 and the side end face of the locking member 16 of the swinging member 14 remain in a supported / locked state. Thus, the sickle member 4 does not rotate backward. However, since the swing member 14 and the bearing member 20 can be lowered against the push spring 21 here, the sickle member 4 can be rotated backward while pushing the swing member 14 downward.
[0033]
Thus, when the sliding door 1 is opened with a strong force, the support / engagement between the part 22 of the peripheral edge and the side end surface of the locking portion 16 of the swinging member 14 as the sickle member 4 rotates rearward. The stop state gradually disengages (see FIG. 7 above), and finally the two parts 22 and 16 are detached. After that, the sickle member 4 receives a rearward biasing force by the spring 11, further rotates rearward, and enters the lock case 3. At that time, the swinging member 14 is pivoted rearward and has a drooping shape due to the weight of the lower weight portion 15 and the rise of the bearing member 20 by the push spring 21.
As a result, the hooked state of the distal end portion 6 of the sickle member 4 is released and the sliding door 1 is opened, so that the caught clothes 28 can be removed.
[0034]
e) On the other side, depending on the weight of the sliding door 1 and the sliding state between the sliding door 1 and the rail, the bounce force due to the collision when the sliding door 1 is closed becomes too large. In some cases, the tip portion 6 of the sickle member 4 once hooked is detached and the sliding door 1 is opened. On the other hand, if the force of the spring 11 is increased so that the sliding door 1 does not open due to bounce, the sickle member 4 may not rotate backward even if an elderly person or a child tries to open the sliding door 1.
In order to prevent this, in the second embodiment of the present invention, the spring 11 that presses the sickle member 4 forward or backward is used as a compression coil spring, and the other end 13 of the spring 11 is connected to the shaft near the lower portion of the lock case 3. The spring force adjusting screw 27 is screwed to the upper end of the spring support member 26 at 25 so that the spring force adjusting screw 27 can be rotated from the outside of the lock case 3.
[0035]
Thereby, when the sliding door 1 is closed, it bounces greatly, the tip 6 of the sickle member 4 once hooked comes off, and the sliding door 1 opens carelessly. The force of the spring 11 may be set to be stronger than the current state by rotating. As a result, the sickle member 4 once hooked on the hooking member 8 receives a stronger spring force toward the front, and the hooked state of the front end portion 6 is difficult to come off. Such things can be eliminated.
Conversely, if the force of the spring 11 is too strong to open the sliding door 1 but the sickle member 4 does not rotate backward and cannot be opened, the spring force adjusting screw 27 is rotated in the opposite direction. The spring force may be set weaker than the current state. Since the force of the spring 11 is weakened, the sliding door 1 can be opened with a relatively small force.
[0036]
【Example】
1 to 7 show an embodiment of a first sickle lock for a sliding door according to the present invention, and the lock case 3 is a concave formed on the front side of the sliding door 1 like many sliding door sickles. Inside, the front plate 46 is installed so as to be exposed (see FIG. 1).
A sickle member 4 is provided near the front upper portion in the lock case 3 so that its base is pivotally supported by a support shaft 5. The sickle member 4 has a front end portion 6 that protrudes from the opening of the front plate 46 of the lock case 3, engages in a latch 7 attached to the front side portion of the door frame body 2, and is provided near the upper portion. The member 8 can be hooked.
[0037]
Further, the spindle 5 of the sickle member 4 is engaged with a longitudinal hole 33 formed in the lock case side plate 18 in the front-rear direction, and a short torsion coil spring 52 provided near the upper portion thereof is always in front of the elongated hole 33. It is urged toward the club.
A trigger 9 is provided near the lower part in the lock case 3 so as to be movable in the front-rear direction. The trigger 9 is biased by a post-action spring 11 through a post-operation member 10 and is always close to the front, as is well known. It protrudes from the hole of the front plate 46 of the lock case 3, and can be moved back and forth into the lock case 3 when pressed against the front surface of the door frame 2.
[0038]
A plate-like actuating member 10 is connected between the sickle member 4 and the trigger 9, but has a generally letter-shaped shape avoiding the swing member 14 described later. That is, the actuating member 10 is pivotally supported at its lower portion by a shaft 25 fixed to the lock case 3, and a pin 34 projecting closer to the upper portion is formed near the center of the sickle member 4. The bifurcated portion 36 formed at the lower portion is connected by engaging with a pin 37 protruding from the side near the rear portion of the trigger 9. The side end portion of the pin 37 is engaged with a guide slot 38 formed in the lock case side plate 18 to guide the entry and exit of the trigger 9.
[0039]
The sickle member 4 is provided with a spring 11 so that the sickle member 4 is urged forward when the sickle member 4 is rotated forward from a certain position and is urged rearward when the sickle member 4 is rotated backward. Here, a torsion coil spring is used as the spring 11, and one end portion 12 of the spring 11 is positioned below the spindle 5 of the sickle member 4 when the distal end portion 6 of the sickle member 4 is hooked to the hooking member 8. It is attached to the position with a spring latch pin 39 (see, for example, FIG. 4 above), and the center point of the pin 39 is designated as Q. The other end 13 of the torsion coil spring 11 is hooked on a shaft 25 that pivotally supports the operating member 10, and the center point of the shaft 25 is P.
[0040]
The spring 11 has a constant reference line L, that is, a line connecting the center of the spindle 5 of the sickle member 4 and the shaft 25 that hooks the other end 13 of the spring 11 as a boundary. When the center position Q is in front of the reference line L (in the direction in which the latch 7 is located, for example, in the left direction in FIG. 4), the spring force urges the sickle member 4 to rotate forward. When it is behind the reference line L (in the direction toward the back side of the lock case 3, for example, rightward in FIG. 2), the sickle member 4 is urged to rotate backward. .
The spring 11 is not limited to the torsion coil spring as described above, but may be a compression coil spring, as shown in FIG. 8, whether or not the spring force adjusting screw 27 is provided.
[0041]
Here, the trigger 9 is composed of two parts, a front portion 44 and a rear portion 45. This is because when a cushioning material (not shown) for reducing the impact noise is mounted between the sliding door 1 and the door frame body 2, it can be protruded by the gap generated by the thickness.
A swing member 14 having a weight portion 15 at the lower portion and a locking portion 16 near the front upper portion is provided at a lower position of the sickle member 4, and the lower portion is driven by the inertial force when the sliding door 1 is closed. The weight part 15 swings forward, and then swings backward by its own weight. That is, when the sliding door 1 is closed and the distal end portion 6 of the sickle member 4 is hooked on the hooking member 8, the swinging portion 14 swings forward by the inertial force so that the swinging member 14 moves forward. The side end face of the locking part 16 comes to the rear lower part of the peripheral edge part 22 of the sickle member 4 and can be supported from the rear lower part for a moment.
[0042]
The swinging member 14 here is formed with a shaft support portion 40 having a substantially circular longitudinal section in the upper portion thereof, and the horizontal shaft 17 is inserted, and the side end surface of the front upper portion of the shaft support portion 40 is attached to the sickle member 4. A part 22 of the peripheral edge is used as a supporting part 16 that can be supported, a lower part of the shaft support part 40 is formed as a vertically long recess 41 cut out from the rear side, and a front hanging part 42 is provided. A weight 15 is formed in the lower part (see FIG. 3).
The horizontal shaft 17 of the shaft support portion 40 is not supported by the lock case side plate 18 but is supported by a separate bearing member 20 that can be raised and lowered. That is, the bearing member 20 is made of synthetic resin here, and the vertically long recess 41 of the swing member 14 is about half height so that it can be engaged from the front, and the lower half portion of the shaft support portion 40 is formed on the upper portion thereof. Is formed in the front-rear direction with a semicircular groove 53 having a semicircular longitudinal cross section that can be supported in a rotatable manner, and a bearing groove 54 is formed in the left-right direction that can be supported in a rotatable manner with respect to the horizontal shaft 17 (see FIG. 3).
[0043]
The bearing member 20 can be moved up and down along a longitudinal groove 19 formed near the front portion of the lock case side plate 18, and between the lower end of the bearing member 20 and a spring receiving piece 23 that is folded back at the lower end of the longitudinal groove 19. Thus, a push spring 21 that biases upward is interposed.
The spring force of the push spring 21 is such that the swinging member 14 and the bearing member 20 do not descend when the bounding force of the sliding door 1 tries to rotate the sickle member 4 backward, but the sliding door 1 is strong. At the time of opening, the force is such that the sickle member 4 is able to push down the swinging member 14 and the bearing member 20 with a part 22 of the peripheral edge in an attempt to rotate backward. Reference numeral 43 denotes a spring guide protruding below the bearing member 20.
[0044]
The side end surface of the locking portion 16 of the swing member 14 is formed in a convex arc shape so that it can be engaged with a part 22 of the peripheral edge of the sickle member 4 from below by rotating around the horizontal shaft 17. Correspondingly, a part 22 of the peripheral edge of the rear lower part of the sickle member 4 is formed in a concave arc shape.
In this embodiment, the tip portion 6 of the sickle member 4 is formed in an arc shape when viewed from the side so that the sickle member 4 can be rotated more smoothly when the sliding door 1 is opened. Moreover, the latching member 8 is formed so that the lower half portion on the side where the tip portion 6 of the sickle member 4 is latched is inclined in the direction in which the sickle member 4 is retracted toward the lower part.
[0045]
Further, in order to appropriately set the vertical positional relationship between the front plate 46 of the lock case 3 and the latch metal 7 of the door frame 2 at the time of attachment and thereafter, a positioning projection is formed on a part of the front plate 46. 47 is formed, a positioning recess 48 in which the projection 47 can be engaged is formed in the latch metal 7, and a hole 49 for attaching the latch metal 7 to the door frame body 2 is elongated in the vertical direction. It is formed in the hole.
Furthermore, the position of the latch member 8 of the latch metal 7 is variable in the front-rear direction by a rotatable adjustment screw 50. This is because when the cushion material is attached and a gap is generated when the door is closed, the hooking member 8 is moved forward by the amount corresponding to the gap corresponding to the front portion 44 of the trigger 9 protruding forward. Can be moved to.
[0046]
In order to make the sickle member 4 in the temporarily locked state into the locked state, the locking portion 29 is formed near the rear portion of the trigger 9 and is operated by operating the locking operation portion 30 on the indoor side. A lock member 31 is provided so as to be engageable with the lock latching portion 29 of the trigger 9 in the retracted position.
On the other hand, FIG. 8 thru | or FIG. 9 shows the sickle lock for sliding doors based on this invention. Second An embodiment of the present invention is shown, but this is the first aspect of the present invention. 1's Since the configuration includes the above-described configuration, the points common to the above-described first configuration are simply described and are denoted by the same reference numerals.
[0047]
Here, the swing member 14 is provided below the sickle member 4. That is, a swing member 14 having a weight portion 15 at the lower portion and a front upper portion having an arm-piece-like locking portion 16 is provided at a lower position of the sickle member 4 and the sliding door 1 is closed. When the distal end portion 6 of the sickle member 4 is engaged with the retaining member 8, the weight portion 15 swings forward due to the inertial force, so that the side end surface of the locking portion 16 near the front upper portion becomes the sickle member 4. It comes to the rear lower part of the part 22 of the peripheral edge and can be supported from the rear lower part for a moment.
The swinging member 14 here also has a substantially circular shaft support portion 40 formed in a portion near the upper portion and the horizontal shaft 17 is inserted therethrough, and the side end surface of the front upper portion of the shaft support portion 40 is attached to the sickle member 4. A part 22 of the peripheral edge is used as a supporting part 16 that can be supported, a lower part of the shaft support part 40 is formed as a vertically long recess 41 cut out from the rear side, and a front hanging part 42 is provided. A weight 15 is formed in the lower part (see FIG. 3).
[0048]
Also, the horizontal shaft 17 of the shaft support portion 40 is not supported by the lock case side plate 18 here, but is supported by a separate bearing member 20 that can be raised and lowered. That is, the bearing member 20 is made of synthetic resin here, and the vertically long recess 41 of the swing member 14 is about half height so that it can be engaged from the front, and the lower half portion of the shaft support portion 40 is formed on the upper portion thereof. Is formed in the front-rear direction with a semicircular groove 53 having a semicircular longitudinal cross section that can be supported in a rotatable manner, and a bearing groove 54 is formed in the left-right direction that can be supported in a rotatable manner with respect to the horizontal shaft 17 3).
The bearing member 20 can be moved up and down along a longitudinal groove 19 formed near the front portion of the lock case side plate 18, and between the lower end of the bearing member 20 and a spring receiving piece 23 that is folded back at the lower end of the longitudinal groove 19. Thus, a push spring 21 that biases upward is interposed.
[0049]
The sickle member 4 is provided with a spring 11 so that the sickle member 4 is biased forward when the sickle member 4 is rotated forward from a certain reference line L, and is biased rearward when the sickle member 4 is rotated backward. Here, the compression coil spring 11 is used, and a spring force adjusting screw 27 is provided.
That is, the connecting member 24 is provided by the connecting pin 51 at a position below the support shaft 5 of the sickle member 4 when the distal end portion 6 of the sickle member 4 is hooked to the hooking member 8, and one end of the compression coil spring 11 is provided. 12 is hooked to the lower end of the connecting member 24, and the center point of the connecting pin 51 is designated as Q.
[0050]
On the other hand, the other end 13 of the compression coil spring 11 is hooked on the upper end of a spring force adjusting screw 27 of a spring receiving member 26 supported by a shaft 25 provided below the lock case side plate 18. The center point of the shaft 25 is P.
The spring receiving member 26 is L-shaped in a side view, and a round hole formed in the vertical piece is pivotally supported on the shaft 25, and a female screw hole 55 is formed in the horizontal piece. Then, the male screw portion of the spring force adjusting screw 27 is screwed there (see FIG. 9). The spring force adjusting screw 27 is knurled on the outer periphery of the upper head portion 56 and can be rotated and adjusted from a window hole (not shown) of the lock case side plate 18.
[0051]
Further, the spring force adjusting screw 27 has a through hole in the center, and allows the insertion rod 32 provided downward from the lower end portion of the connecting member 24 to pass therethrough. The compression coil spring 11 is inserted into the insertion spring 32. It is provided on the outer periphery so as to be guided by the rod 32.
The compression coil spring 11 in this case also has a fixed reference line L, here the center of the spindle 5 of the sickle member 4 and the spring receiving member 26 that supports the spring force adjusting screw 27 that holds the other end 13 of the spring 11. The center point Q of the connecting pin 51 that pivotally supports the connecting member 24 with respect to the line connecting the shaft 25 is forward of the reference line L (in the direction in which the latch 7 is located, for example, left in FIG. The sickle member 4 is urged to rotate forward when it is in the direction), and the sickle member 4 when it is rearward (direction toward the back side of the lock case 3, for example, rightward in FIG. 8). Is biased to rotate backward.
[0052]
Unlike the illustrated example, the shaft 25 that supports the spring receiving member 26 that supports the spring force adjusting screw 27 is capable of rotating the actuating member 10 as in the above embodiment showing the first one of the present invention. The shaft may be supported by a shaft that supports the motion (see, for example, FIG. 2 above). In this case, P is the center point of the shaft.
Further, in this embodiment, in order to achieve the locked state, the lock member 31 operated by the lock operation unit 30 on the indoor side is hooked on the lock engaging portion 29 near the upper portion of the spring receiving member 26 here. The spring receiving member 26 is prevented from pivoting backward, and the sickle member 4 is prevented from pivoting via the connecting member 24. In this respect as well, the locking portion 31 for locking may be formed on the trigger 9 to be hooked as in the above embodiment showing the first aspect of the present invention.
[0053]
【The invention's effect】
As is apparent from the above, the sliding door sickle lock according to the present invention is a sliding door sickle lock that is automatically locked or released when the sliding door is closed or opened. When the sliding door is opened, the temporary locking state is automatically set. The sliding door can be reliably prevented from bouncing without harming the function that is released automatically, and the sliding door can be opened with a light force, and when the sliding door is closed, clothes etc. are sandwiched between the door frame Also, the temporary locking can be reliably released and removed.
[0054]
That is, conventionally, there was a sickle lock for sliding doors in which the temporary locking state was automatically released when the sliding door was opened and bounce was prevented when the sliding door was closed.
However, if the sliding door is light or the sliding with the sill, rail, etc. is too good, the bounce will increase, and the tip of the sickle member once hooked when the sliding door is closed will overcome the spring force and disengage from the locking member. Unable to prevent the bounce, the sliding door opened.
In addition, when the force of the spring or the like is increased, the sickle member is difficult to rotate backward, and the elderly and children cannot easily open the sliding door, and the temporary locking state is automatically released by opening the sliding door. It was damaged. In addition, if clothes etc. are caught when the sliding door is closed, the sickle member is difficult to rotate backward, the tip part is difficult to remove from the latching member, and the sliding door cannot be opened, and clothes etc. may not be removed. .
[0055]
B) On the other hand, in the first one of the sickle locks for sliding doors of the present invention, the swinging member which supports a part of the peripheral edge of the sickle member and prevents the backward rotation is provided with inertia. With the structure that can swing by force, when the sliding door is closed, the sickle member rotates backward by the bounce force, and even if the hooked state is released and the sliding door is opened, the inertia at that time The locking portion of the swing member by force supports a part of the peripheral edge of the sickle member once in the hooked state for a moment and prevents backward rotation.
For this reason, even if the sickle member tries to rotate backward due to the bounce force when the sliding door is closed, the sickle member is reliably prevented from rotating backward. It is possible to reliably prevent the sliding door from being inadvertently opened by bouncing while the stopped state is reliably maintained.
[0056]
Similarly, in the first aspect of the present invention, the swinging member that supports a part of the peripheral edge of the sickle member and prevents the backward rotation can be lowered against the push spring. Now, when the sliding door is closed, clothes, etc. are pinched, and even if the supporting state between the part of the peripheral edge of the sickle member and the locking portion of the swinging member is strong and locked, If it opens strongly, the sickle member can be rotated backward while pushing down the swinging member.
Therefore, the sickle member is the same as when the support state / locking state by the swinging member is released, the sickle member rotates backward, and the leading end is released from the latch member, and the sliding door Will be opened and you will be able to remove the clothes that were caught.
[0057]
B) In the second sliding door sickle lock of the present invention, a spring that presses the sickle member forward or backward is a compression coil spring, and the spring force of the spring can be adjusted from outside the lock case.
Therefore, when the sliding door is greatly bounced when the sliding door is closed and the tip of the sickle member once hooked is released and the sliding door opens, the spring force adjustment bolt can be used to set the spring force stronger than the current state. , You can eliminate the sliding door opening at the bounce. On the other hand, if the spring force is too strong to open the sliding door, the spring force adjusting bolt can be turned in the reverse direction to set the spring force to be weaker than the current level. It can be opened.
[0058]
C) this Of the sickle lock for sliding door of the present invention Second The one above 1's Because it has a configuration, its effect is also 1's It is possible to reliably prevent the sliding door from opening due to the bounce force when the sliding door is closed, and even if you sandwich clothes etc. when the sliding door is closed, the sickle can be opened by strongly opening the sliding door. The member can be rotated rearward, the sliding door can be opened, and clothes can be removed.
Also, As previously mentioned, When the sliding door has a large bounce force when it is closed and the sliding door opens, the spring force can be adjusted from the outside by operating the spring force adjustment screw from outside the lock case to prevent the sliding door from opening at the bounce. If the spring force is too strong to open the sliding door, the spring force can be weakened with a spring force adjusting bolt so that the elderly can open the sliding door with a light force.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view showing an embodiment of a sickle lock for sliding doors according to the present invention.
FIG. 2 is a longitudinal sectional side view showing a state when the door is opened in the first embodiment of the present invention.
FIG. 3 is an exploded perspective view of the vicinity of the swing member in the first embodiment of the present invention.
FIG. 4 is a longitudinal sectional side view showing a state in which the swinging member supports a part of the peripheral edge of the sickle member immediately after closing in the first embodiment of the present invention.
FIG. 5 is a longitudinal sectional side view showing a locked state in which the swinging member is separated from a part of the peripheral edge of the sickle member after closing in the first embodiment of the present invention.
FIG. 6 is a longitudinal sectional side view showing a state in which clothes or the like are sandwiched when the door is closed in the first embodiment of the present invention.
FIG. 7 is a longitudinal sectional side view showing a state where the sliding door is strongly opened when clothes or the like are sandwiched in the first embodiment of the present invention.
FIG. 8 shows the present invention. Second It is a vertical side view which shows the state which a rocking | swiveling member supports a part of peripheral edge of a sickle member immediately after closing in the Example of a thing.
FIG. 9 shows the present invention. Second FIG. 5 is an exploded perspective view of the vicinity of a spring force adjusting screw in the embodiment of the present invention.
[Explanation of symbols]
1-Sliding door 21-Push spring 41-Recess
2-Door frame 22-Part of peripheral edge 42-Hanging part
3-lock case 23-spring receiving piece 43-spring guide
4-sickling member 24-connecting member 44-front portion
5-support shaft 25-shaft 45-rear part
6-tip portion 26-spring receiving member 46-front plate portion
7-Holding bracket 27-Spring force adjusting screw 47-Protrusions for positioning
8-Latching member 28-Cloth etc. 48-Positioning recess
9-Trigger 29-Locking part 49-Mounting hole
10-Actuating member 30-Locking operation part 50-Adjustment screw
11-spring 31-lock member 51-connecting pin
12-one end part 32-insertion rod 52-torsion coil spring
13-other end 33-long hole 53-concave groove
14-Oscillating member 34-Pin 54-Bearing groove
15-Weight part 35-Long hole 55-Female screw hole
16-locking part 36-bifurcated part 56-head
17-Horizontal axis 37-Pin Q-Position of one end
18-Lock case side plate 38-Guide slot P-Position of the other end
19-Longitudinal groove 39-Spring retaining pin L-Reference line
20-bearing member 40-bearing part

Claims (4)

引き戸１の錠ケース３内に、閉戸時に戸枠体２への当接で後退するトリガー９と、その後退時に鎌部材４を前方へ回動させる作動部材１０と、前方への回動で戸枠体２の掛止金具７の掛止部材８へ先端部６が掛止可能な鎌部材４と、該鎌部材４を一定の基準線Ｌを境に前方または後方へ付勢するバネ１１を備えた引き戸用鎌錠において、
上記鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６を有する揺動部材１４を、引き戸１を閉めた際の慣性力で前方へ揺動可能に設けて、掛止部材８へ掛止状態になった直後の鎌部材４の周端縁の一部２２を一瞬間だけ支承可能とし、
かつ、上記揺動部材１４の横軸１７を、昇降可能な軸受け部材２０で支承させると共に、該軸受け部材２０を、上方へ付勢する押しバネ２１で支承させたことを特徴とする、引き戸用鎌錠。In the lock case 3 of the sliding door 1, a trigger 9 that retreats by contact with the door frame 2 when the door is closed, an actuating member 10 that rotates the sickle member 4 forward at the time of retraction, and a forward rotation. A sickle member 4 whose tip 6 can be hooked to a latching member 8 of a latching member 7 of the door frame 2 and a spring 11 that urges the sickle member 4 forward or backward with a certain reference line L as a boundary. In the sickle lock for sliding doors with
At the lower position of the sickle member 4, a swing member 14 having a weight portion 15 at the lower portion and a locking portion 16 at the upper portion is provided so as to be swingable forward by the inertial force when the sliding door 1 is closed. Then, a part 22 of the peripheral edge of the sickle member 4 immediately after the hooking member 8 is hooked can be supported only for a moment,
Further, the horizontal shaft 17 of the swing member 14 is supported by a bearing member 20 that can be moved up and down, and the bearing member 20 is supported by a push spring 21 that biases upward. Sickle tablets. 引き戸１の錠ケース３内に、閉戸時に戸枠体２への当接で後退するトリガー９と、その後退時に鎌部材４を前方へ回動させる作動部材１０と、前方への回動で戸枠体２の掛止金具７の掛止部材８へ先端部６が掛止可能な鎌部材４と、該鎌部材４を一定の基準線Ｌを境に前方または後方へ付勢するバネ１１を備えた引き戸用鎌錠において、
上記鎌部材４の下方位置に、下部に重り部１５を有し上部寄りに係止用部１６を有する揺動部材１４を、引き戸１を閉めた際の慣性力で前方へ揺動可能に設けて、掛止部材８へ掛止状態になった直後の鎌部材４の周端縁の一部２２を一瞬間だけ支承可能とすると共に、
上記揺動部材１４の横軸１７を、昇降可能な軸受け部材２０で支承させると共に、該軸受け部材２０を、上方へ付勢する押しバネ２１で支承させ、
かつ、上記鎌部材４を付勢するバネ１１を圧縮コイルバネとし、その他端部１３を、錠ケース３内下部寄りに設けたバネ力調節用ネジ２７で支持させて、該バネ力調節ネジ２７を、錠ケース３外から回動調節可能としたことを特徴とする、引き戸用鎌錠。In the lock case 3 of the sliding door 1, a trigger 9 that retreats by contact with the door frame 2 when the door is closed, an actuating member 10 that rotates the sickle member 4 forward at the time of retraction, and a forward rotation. A sickle member 4 whose tip 6 can be hooked to a latching member 8 of a latching member 7 of the door frame 2 and a spring 11 that urges the sickle member 4 forward or backward with a certain reference line L as a boundary. In the sickle lock for sliding doors with
At the lower position of the sickle member 4, a swing member 14 having a weight portion 15 at the lower portion and a locking portion 16 at the upper portion is provided so as to be swingable forward by the inertial force when the sliding door 1 is closed. In addition, the part 22 of the peripheral edge of the sickle member 4 immediately after the hooking member 8 is hooked can be supported only for a moment,
The horizontal shaft 17 of the swing member 14 is supported by a bearing member 20 that can be raised and lowered, and the bearing member 20 is supported by a push spring 21 that biases upward.
The spring 11 for biasing the sickle member 4 is a compression coil spring, and the other end 13 is supported by a spring force adjusting screw 27 provided near the lower part in the lock case 3, and the spring force adjusting screw 27 is The sickle lock for sliding doors, characterized in that the rotation can be adjusted from outside the lock case 3. 請求項１または２に記載の引き戸用鎌錠において、
鎌部材４の先端部６を側面図で見て円弧状に形成すると共に、該鎌部材４の先端部６を掛止する掛止部材８の下半部を、鎌部材４の後退する方向へ傾斜状に形成してなる、引き戸用鎌錠。 In the sickle lock for sliding doors according to claim 1 or 2,
The front end portion 6 of the sickle member 4 is formed in an arc shape when viewed from the side, and the lower half portion of the latching member 8 that latches the front end portion 6 of the sickle member 4 is moved in the direction in which the sickle member 4 moves backward. Sliding door sickle lock formed in an inclined shape . 請求項１、２または３に記載の引き戸用鎌錠において、
錠ケース３の前面板４６に位置決め用突起４７を形成し、他方掛止金具７に上記突起４７を係合可能な位置決め用凹所４８を形成すると共に、掛止金具７の取付け孔４９を上下に長く形成してなる、引き戸用鎌錠。 In the sickle lock for sliding doors according to claim 1, 2, or 3,
A positioning projection 47 is formed on the front plate 46 of the lock case 3, and a positioning recess 48 is formed on the other latching bracket 7 so that the projection 47 can be engaged with it. A long- lasting sickle lock for sliding doors.

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