JP4314024B2

JP4314024B2 - Latch lock

Info

Publication number: JP4314024B2
Application number: JP2002357218A
Authority: JP
Inventors: 善三久納
Original assignee: Chuo Hatsujo KK
Current assignee: Chuo Hatsujo KK
Priority date: 2002-06-21
Filing date: 2002-12-09
Publication date: 2009-08-12
Anticipated expiration: 2022-12-09
Also published as: JP2004076559A

Description

【０００１】
【発明の属する技術分野】
本発明は、建造物の開閉窓などの被施錠物への解錠構造を改良したラッチ錠に関する。
【０００２】
【従来の技術】
家屋などの建造物の比較的上部に位置する開閉窓は、換気および採光などのために設けられたものであり、常には施錠装置により窓枠に対してロック機構を働かせて開閉窓を被施錠物として施錠している。換気時には空気の入れ換えのため、火災などの緊急時には排煙のため、施錠装置（排煙錠）のワイヤーを手で引いてロック機構を変位させ、窓枠に対するロックを外して開閉窓を開放する。この施錠装置の一例として窓開閉装置の閉窓ロック装置が登場している（例えば特許文献１参照）。
【０００３】
【特許文献１】
特開平１０−３１７７８９号公報
【０００４】
【発明が解決しようとする課題】
上記の閉窓ロック装置では、閉窓および開窓操作時に首振りフックを首振り動作によりフック受け軸に対して係脱する構成にしている。このため、フック受け軸に対する首振りフックの係脱動作が不安定で施解錠動作への信頼性に問題がある。また、開閉窓の開放時に手で引くワイヤーの性質上、ワイヤーの延出長さに限界があり、ワイヤーは開閉窓の近くに設けるのが一般的である。このため、火災などの緊急時に安全な場所から遠隔的にワイヤーを操作することができない不都合がある。さらに、ワイヤーの手動操作により一度に開放できるのは、４連窓が限界であるため、５連窓といったように開閉窓の設置数が多くなると、開閉窓を分けて別々に開放する必要がある。このため、ワイヤーの手動操作を繰り返し行わざるを得なくなり、火災などから逃れる際の緊急避難時間が長引く不都合がある。とりわけ、ワイヤーの手動操作が非力な幼児や障害者などによる場合、開閉窓の開放が行われなかったり、仮に行われても長時間がかかり緊急避難に間に合わない虞がある。
【０００５】
本発明は上記事情に鑑みてなされたもので、その第１の目的は施解錠操作に応じてラッチが被施錠物に対して正確に係脱するので、高い信頼度で確実な施解錠動作を行うことができるラッチ錠を提供することにある。
本発明の第２の目的は、被施錠物の解錠を手動操作でも電動操作でも行うことができ、電動操作の場合、所定の場所からの遠隔操作により被施錠物の設置数および解錠時の操作者の非力さとは関係なく被施錠物を一挙に自動解錠することができるラッチ錠を提供することにある。
【０００６】
【課題を解決するための手段】
（請求項１について）
被施錠物に対して離接方向に移動可能に設けられ、付勢部材により常に前記被施錠物に近接する方向に付勢されて前記被施錠物を係合により施錠位置にロックするラッチと、このラッチに形成したラッチ鍔に摺接するカム部を回転軸に嵌着した駆動モータと、自動操作時には、前記駆動モータへの通電により前記カム部が所定の回動状態である原初位置から前記回転軸を介して前記ラッチ鍔に摺接しながら所定角度回動し、前記ラッチの係合を外して前記施錠位置から前記付勢部材の付勢力に抗して前記被施錠物から離れた解錠位置に変位させる解錠手段と、前記被施錠物の解錠後、前記カム部をさらに同方向に一定角度回動させてから、前記駆動モータを無通電により停止させて、前記カム部を前記原初位置に戻すことにより、前記ラッチの前記被施錠物への係合に備えるよう前記施錠位置に復帰させる施錠復帰手段とを備え、前記解錠手段は、前記被施錠物に対する前記ラッチの移動方向に垂直方向に指向して前記ラッチに設けたラッチ軸と、このラッチ軸を係合させる切欠カム部を有し、前記ラッチ軸の移動方向に対して垂直方向に移動することにより前記ラッチ軸を前記切欠カム部から脱出させて前記ラッチを前記施錠位置から前記解錠位置に変位させるスライダー部と、前記ラッチを前記施錠位置に保持すべく前記切欠カム部が常に前記ラッチ軸を係合する方向に前記スライダー部を付勢する位置付勢部材と、前記スライダー部に連結され、手動操作時に前記位置付勢部材の付勢力に抗して前記スライダー部を移動して前記ラッチを前記施錠位置から前記解錠位置に変位させる索条部材とを有することを特徴とする。
【０００７】
（請求項２について）
前記被施錠物は建造物の開閉窓であり、前記建造物の換気や排煙時などに前記ラッチを前記施錠位置から前記解錠位置に変位させて前記開閉窓を開放することを特徴とする。
【０００８】
（請求項３について）
前記建造物の換気や排煙時などに前記ラッチを前記施錠位置から前記解錠位置に変位させて前記開閉窓を開放した際、所定の場所で前記開閉窓の開表示用として作動する表示部を設けたことを特徴とする。
【０００９】
（請求項４について）
前記ラッチが前記施錠位置に保持されている時、前記開閉窓は付勢部材の付勢力に抗して閉鎖されており、前記開閉窓の開放時に前記開閉窓は、前記付勢部材の付勢力により開放されることを特徴とする。
（請求項５について）
前記被施錠物は建造物の開口部に設置する遮蔽スクリーンであり、該遮蔽スクリーンを巻き上げ状態に保持し、手動操作または電動操作で解錠することを特徴とする。
【００１０】
【発明の作用および効果】
（請求項１について）
被施錠物の施錠時、ラッチを被施錠物に係合して施錠位置にロックし、解錠時に解錠手段によりラッチの係合を外して被施錠物に対するロックを解除する。被施錠物に対する施解錠操作は、ラッチを被施錠物に対して係脱させることにより行われるので、被施錠物に対するラッチの係脱状態が確実になり高い信頼度で施解錠動作を行うことができる。
【００１１】
ラッチは、付勢部材により常に被施錠物に近接する方向に付勢されて被施錠物を施錠位置にロックする。駆動モータは、回転軸に嵌着したカム部をラッチ鍔に摺接させている。自動操作時、駆動モータに通電すると、回転軸を介してカム部がラッチ鍔に摺接しながら回動する。このため、ラッチが施錠位置から付勢部材の付勢力に抗して被施錠物から離れた解錠位置に自動的に変位して被施錠物の施錠を解く。
【００１２】
これにより、被施錠物の設置数および解錠時の操作者の非力さとは関係なく被施錠物を一挙に自動解錠することができる。被施錠物を建造物の開閉窓に適用した場合、開閉窓が遅滞なく開放されるため、換気時に室内空気の入れ換えが円滑に行われ、火災などの緊急時に建造物から排煙が素早く行われて緊急非難に役立つ。それでいながら、開閉窓の解錠動作は、駆動モータの回転軸にカム部を嵌着してラッチ鍔に摺接させるといった比較的簡素な構造で済むため、省スペース化とともに低コスト化に寄与する。
【００１３】
解錠手段では、ラッチにラッチ軸を設けてスライダー部に切欠カム部を形成し、切欠カム部にラッチ軸を係合させている。位置付勢部材は、ラッチ軸がスライダー部の切欠カム部に常に係合する方向に付勢してラッチ軸を施錠位置に保持する。索条部材の手動操作により、スライダー部を位置付勢部材に抗して所定の方向に移動させると、ラッチ軸が切欠カム部から脱出してラッチを施錠位置から解錠位置に変位させる。索条部材の手動操作により、ラッチが解錠位置に変位して被施錠物の施錠を解くので、被施錠物の手動解錠が可能となり自動解錠と手動解錠とを選択的に行うことができる利点がある。
被施錠物を建造物の開閉窓に適用して手動解錠を選択した場合、開閉窓の近辺で開閉窓を視認しながら開放できる。このため、換気時に室内空気の入れ換えを確認でき、火災などの緊急時にいち早く建造物からの排煙を確かめることができる。これにより、停電や電気的な故障などで自動解錠による開閉窓の開放が間に合わない場合、手動解錠により開閉窓を開放することができる利点がある。
【００１４】
（請求項２について）
被施錠物は建造物の開閉窓であるため、建造物の換気や排煙時などに、請求項１で被施錠物を建造物の開閉窓に適用した場合と同様な作用効果が得られる。
（請求項３について）
被施錠物が建造物の開閉窓の場合で、建造物の換気や排煙時などにラッチを施錠位置から解錠位置に変位させて開閉窓を開放すると、開閉窓の開表示用の表示部が作動する。開閉窓の開放を表示部で確認できるため、自動解錠と手動解錠とを選択的に行うことができる場合、自動解錠により開閉窓が開放されたのに手動解錠のため開閉窓に近づいたり、手動解錠により開閉窓の開放が行われたのに自動解錠のため駆動モータに通電するといった無駄な重複操作を避けることができる。
【００１５】
（請求項４について）
被施錠物が建造物の開閉窓の場合、開閉窓は付勢部材の付勢力に抗して閉鎖されている。ラッチの解錠に伴い、開閉窓は付勢部材の付勢力に支援されつつ開放される。このため、建造物の換気や排煙時などに開閉窓が円滑かつ速やかに開放されて室内空気の入れ換えや排煙動作が迅速に行われる利点が得られる。
（請求項５について）
被施錠物が建造物の開口部に設置する遮蔽スクリーンに適用された場合、該遮蔽スクリーンを巻き上げ状態に保持し、手動操作または電動操作で解錠することができる。
【００１６】
【発明の実施の形態】
本発明の各実施例を図を参照しながら説明する。
図１ないし図８は本発明の第１実施例を示す。枠体１は、図１の（イ）、（ロ）に示すように建造物の外壁面に設けた開口部（図示せず）に嵌め込まれている。枠体１内には、被施錠物として開閉窓２が外側倒し窓として下部ヒンジ３により外側に向かって上下方向に開閉回動可能に取り付けられている。開閉窓２は、建造物内の室内側で比較的上部に位置しており、主に採光、換気および火災などの緊急時の排煙に用いられる。開閉窓２の窓枠２ａと枠体１の縦桟部との間に、開閉窓２の開方向の付勢部材としてステイダンパー４が掛け渡されている。窓枠２ａの上框部には、ラッチ錠７の略Ｌ字状の施錠プレート５が取り付けられ、その先端部は室内側に延びて施錠穴６を形成している。
【００１７】
ラッチ錠７は、枠体１の上部で室内側に取り付けられ、図２に示す矩形箱８内に駆動モータ１０、断面略コ字状のラッチガイド９およびラッチ１１を備えている。ラッチ１１は、ラッチガイド９に沿って上下方向に移動可能に設けられ、図４に示すように上部左右側にラッチ鍔１２、１３を有し、下部に円弧状の舌片部１４を形成している。ラッチガイド９の天井部９ａとラッチ１１の水平片部１１ａとの間に圧縮コイルスプリング１５が付勢部材として設けられ、ラッチ１１を下方に付勢して施錠位置に変位させる。この時、ラッチ１１の舌片部１４が施錠プレート５の施錠穴６にラッチ１１を係合によりロックし、図１の（イ）のように開閉窓２を閉鎖状態に施錠する。この時、ラッチ１１のラッチ鍔１２は、後述する常開形のマイクロスイッチＭ１の可動接片Ａ１を押圧している（図２および図７）。
【００１８】
駆動モータ１０は、例えばＤＣ２４Ｖ（０．３Ａ／窓）で電源Ｐｗ（図７）により通電駆動されるようになっている。駆動モータ１０の回転軸１６は、図５の（イ）に示すようにラッチ１１のラッチ鍔１３に摺接する略半円板状のカム部１７を嵌着して解錠手段を構成している。カム部１７は、円弧部１７ａと直線部１７ｂとからなる。カム部１７の回動に伴い、直線部１７ｂがラッチ鍔１３と略面一となる施錠位置から円弧部１７ａがラッチ鍔１３に摺動して、ラッチ１１を図５の（ロ）に示すように押し上げる。このため、ラッチ１１の舌片部１４が施錠プレート５の施錠穴６に対する係合が外れて開閉窓２に対する施錠を解く解錠位置に変位する。
【００１９】
ラッチ１１には、ラッチ軸１８がラッチ１１の移動方向に略垂直方向に指向するように取り付けられている。ラッチ軸１８に直交するように偏平な略横コ字状の支持部材２０が設けられている。支持部材２０の縦片部２０Ａ、２０Ｂの間には、支軸２０ａが掛け渡されている。支軸２０ａには、ラッチ軸１８とともに解錠手段をなす横長片状のスライダー部１９がこれの耳部１９ａ、１９ｂを介して左右に移動可能に連結されている。スライダー部１９の中央部には、図３の（イ）に示すようにラッチ軸１８を係合させた谷状の切欠カム部２１が形成されている。スライダー部１９の左右方向の移動により、切欠カム部２１が図３の（ロ）で示すようにラッチ軸１８を押し出す。このため、ラッチ１１が上方に移動して施錠位置から解錠位置に変位する。
【００２０】
支持部材２０の縦片部２０Ａと耳部１９ａとの間、および縦片部２０Ｂと耳部１９ｂとの間には、圧縮コイルスプリング２２、２３が位置付勢部材として設けられている。このため、スライダー部１９は圧縮コイルスプリング２２、２３の間に挟まれた位置にあり、切欠カム部２１がラッチ軸１８を係合する施錠位置に保持される。スライダー部１９は、連結片部２４を介して手動操作用のワイヤー２５を索条部材として連結している。このワイヤー２５の左右端部は、図６に示すように室内壁部に設けた滑車２６、２７を介して室内側に垂下する引手部Ｓ１、Ｓ２に連結されている。
【００２１】
矩形箱８の前面部には、透孔２８が図２に示すように形成されており、この透孔２８内に段付き状のピン柱２９を軸方向に摺動可能に設けている。ピン柱２９の矩形箱８内に存する部分に突条環２９ｂを形成し、この突条環２９ｂを透孔２８の外側周縁部に当接させてピン柱２９が抜け出ないようにしている。ピン柱２９の先端部に形成された当接頭部２９ａと透孔２８の内側周縁部との間に、圧縮コイルスプリング３０をピン柱２９の復帰用付勢部材として設けている。
開閉窓２が閉鎖された状態では、ピン柱２９が当接頭部２９ａを介して窓枠２ａに押され、圧縮コイルスプリング３０の付勢力に抗して矩形箱８内に後退している。ピン柱２９の後退に伴い、圧縮コイルスプリング３０が圧縮による蓄勢力でピン柱２９を前進方向に付勢している。この後退位置では、ピン柱２９の後端部に形成したテーパ部２９ｃが後述する常開形のマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３を押圧している（図７）。
【００２２】
駆動モータ１０が組み込まれた電気結線図を示す図７において、制御部３１Ａを成す主スイッチ３１は、換気時の所定の場所として室内側で開閉窓２の付近に設けられ、換気時に開閉窓２の付近で主スイッチ３１の操作ができるようになっている。火災などの緊急時、煙感知器（図示せず）により緊急事態を例えば防災施設あるいは警備施設などの集中管理室に通報して主スイッチ３１を集中管理室から遠隔的に自動操作する。
【００２３】
開閉窓２の付近、あるいは集中管理室からの指令で主スイッチ３１の投入操作が行われると、図７の（イ）に示すように駆動モータ１０が駆動回路ＤｖのマイクロスイッチＭ２のバイパス路３２を介して通電される。このため、駆動モータ１０の回転軸１６の回転により、カム部１７が図８の（イ）で示す下限位置から反時計方向に略２７０°回動して（ロ）に示す上限位置に上昇する。これに伴い、ラッチ１１が施錠位置から解錠位置に上昇変位し、舌片部１４が施錠プレート５の施錠穴６から抜け出る。ラッチ１１の上昇変位により、ラッチ鍔１３がマイクロスイッチＭ１の可動接片Ａ１から離れ、図７の（ロ）に示すように可動接片Ａ１が固定接点ａ１から固定接点ｂ１に切り替わって駆動モータ１０に対する通電路３３を形成する。
【００２４】
この際、窓枠２ａに対するピン柱２９の当接状態が解放されるため、圧縮コイルスプリング３０の蓄勢力によりピン柱２９が透孔２８から外方に押し出される。ピン柱２９が外方に押し出されるのに伴い、テーパ部２９ｃがマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３から離れる。このため、図７の（ハ）に示すように可動接片Ａ２、Ａ３が固定接点ａ２、ａ３から固定接点ｂ２、ｂ３に切り替わる。マイクロスイッチＭ２の切替えによりバイパス路３２が無通電となり、マイクロスイッチＭ３の切替えにより開閉窓２の開表示用のランプ３４が通電により表示部として点灯する。このランプ３４は、室内側で開閉窓２の近辺、あるいは防災施設や警備施設の集中管理室に設けられ、ランプ３４の点灯により開閉窓２の開放を報知する。
【００２５】
カム部１７が図８の（ロ）の上限位置から反時計方向に略９０°に回動すると、カム部１７は（イ）に示す元の下限位置に戻る。このため、ラッチ１１は圧縮コイルスプリング１５の付勢力により下方に変位し、ラッチ鍔１２がマイクロスイッチＭ１の可動接片Ａ１を押圧する。可動接片Ａ１が図７の（ニ）に示すように固定接点ｂ１から固定接点ａ１に切替わり駆動モータ１０を無通電により停止させる。
【００２６】
換気や排煙後に開閉窓２を元の閉鎖位置に戻すには、主スイッチ３１をオフ状態に戻した後、先端にフック部を有する長尺な操作棒（図示せず）を用いて開閉窓２に引っ掛けて室内側に引く。これにより、開閉窓２が枠体１内の閉鎖位置に戻り、ラッチ１１の舌片部１４が施錠プレート５の施錠穴６内に係合して開閉窓２の施錠が行われる。
開閉窓２の閉鎖操作に伴い、窓枠２ａが圧縮コイルスプリング３０の付勢力に抗してピン柱２９の当接頭部２９ａを矩形箱８内に押し込み、テーパ部２９ｃがマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３を押圧する。このため、可動接片Ａ２、Ａ３が図７の（イ）に示すように固定接点ｂ２、ｂ３から固定接点ａ２、ａ３に切り替わり、バイパス路３２が通電状態になるとともに開表示用のランプ３４が無通電により消灯する。
【００２７】
上記構成では、駆動モータ１０に通電してラッチ１１を施錠プレート５の施錠穴６を抜き出して開閉窓２の施錠を自動解錠により解いた。自動解錠を用いなくても、ワイヤー２５を手で操作する手動解錠により開閉窓２の施錠を解くことができる。すなわち、開閉窓２が枠体１内で閉鎖位置に存する時、図６に示す引手部Ｓ１、Ｓ２のいずれかによりワイヤー２５を引く。これにより、連結片部２４を介してスライダー部１９が圧縮コイルスプリング２２、２３の一方の付勢力に抗して左右のいずれかの方向に移動する。このため、ラッチ軸１８が切欠カム部２１に押されて図３の（イ）から（ロ）で示す位置に上昇する。ラッチ軸１８の上昇により、ラッチ１１が施錠位置から解錠位置に上昇変位し、ラッチ１１の舌片部１４が施錠プレート５の施錠穴６から抜け出て開閉窓２の施錠が外れる。このため、自動解錠の場合と同様にステイダンパー４の付勢力により開閉窓２が図１の（ロ）に示すように室外側に開放される。
【００２８】
ラッチ１１による開閉窓２の施錠が外れる際、自動解錠の場合と同様にピン柱２９のテーパ部２９ｃがマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３から離れる。図７の（ハ）に示すように可動接片Ａ２、Ａ３が固定接点ａ２、ａ３から固定接点ｂ２、ｂ３に切り替わる。マイクロスイッチＭ２の切替えによりバイパス路３２が無通電となり、マイクロスイッチＭ３の切替えにより開閉窓２の開表示用のランプ３４が点灯する。換気や排煙後に開閉窓２を元の閉鎖位置に戻すには、自動解錠の場合と同様に長尺な操作棒を用いて開閉窓２に引っ掛けて室内側に引けばよい。
【００２９】
このように、開閉窓２の解錠時は、手動および電動両用により行うことができ、電動の場合は駆動モータ１０への通電により、カム部１７がラッチ鍔１３に摺接しながら回動し、ラッチ１１を施錠位置から圧縮コイルスプリング１５の付勢力に抗して解錠位置に自動的に上昇させて開閉窓２の施錠を解く。これにより、開閉窓２の設置数（連窓数）および操作者の非力さとは関係なく開閉窓２を一挙に自動解錠することができる。開閉窓２が遅滞なく自動的に開放されるため、換気時に室内空気の入れ換えが円滑に行われ、火災などの緊急時に建造物から排煙が素早く行われて緊急非難に役立つ。それでいながら、開閉窓２の解錠動作は、駆動モータ１０の回転軸１６にカム部１７を嵌着してラッチ鍔１３に摺接させるといった比較的簡素な構造で済むため、省スペース化とともに低コスト化に寄与する。
【００３０】
手動で解錠する場合はワイヤー２５の手動操作により、スライダー部１９を圧縮コイルスプリング２２、２３の付勢力に抗して引き、切欠カム部２１によりラッチ軸１８を押し出してラッチ１１を施錠位置から解錠位置に変位させる。ワイヤー２５の手引き操作でラッチ１１が解錠位置に変位して開閉窓２に対する施錠を解くので、開閉窓２の手動解錠が可能となり自動解錠と手動解錠とを選択できる利点がある。
開閉窓２の開放操作に手動解錠を選択した場合、開閉窓２を視認しながら開放することができるため、換気時に室内空気の入れ換えを確認でき、火災などの緊急時にいち早く建造物からの排煙を確かめることができる。このため、自動解錠による開閉窓２の開放が間に合わない場合、手動解錠により開閉窓２を開放できる利点がある。
【００３１】
開閉窓２の開放時、ラッチ１１を施錠位置から解錠位置に変位させると、開閉窓２の開表示用のランプ３４が点灯する。開閉窓２の開放をランプ３４で視認できる。このため、自動解錠と手動解錠とを選択的に行うことができる場合、自動解錠により開閉窓２が開放されたのに手動解錠のため開閉窓２に近づいたり、手動解錠により開閉窓２の開放が行われたのに自動解錠のため主スイッチ３１により駆動モータ１０に通電するといった無駄な重複操作を避けることができる。
【００３２】
図９および図１０は本発明の第２実施例を示す。第２実施例では、第１実施例と同一部材には同一符号を付して異なる部分のみ説明する。
この第２実施例では、図９に示すように単一の開閉窓２に代わって４連数の開閉窓２を設けている（４連窓）。各開閉窓２には、ラッチ錠７が取り付けられ、各スライダー部１９はワイヤー２５により連結され、ワイヤー２５の左右端部は、滑車２６、２７を介して垂下する引手部Ｓ１、Ｓ２を有する。各開閉窓２に設置されたラッチ錠７に対応して駆動回路Ｄｖが設けられている。各駆動回路Ｄｖの通電路３３は、図１０に示すように制御部３１Ａに対して並列接続されている。
【００３３】
このため、自動解錠の場合、主スイッチ３１の投入操作により駆動モータ１０を駆動すると、各駆動回路Ｄｖが図７の（イ）から（ニ）と同様に作動して各開閉窓２が同時に一斉開放する（一斉開放モード）。
手動施錠の場合、引手部Ｓ１、Ｓ２のいずれかを引くと、ワイヤー２５および連結片部２４を介してスライダー部１９が左右のいずれかの方向に移動する。このため、図３の（ロ）と同様にラッチ軸１８が切欠カム部２１に押されて上昇する。このため、ラッチ１１が施錠位置から解錠位置に上昇変位し、施錠穴６に対する舌片部１４の係合が外れて開閉窓２の施錠を解く。
【００３４】
図１１は本発明の第３実施例を示す。第３実施例では、第２実施例と同一部材には同一符号を付して異なる部分のみ説明する。第３実施例が、第２実施例と異なるところは各駆動回路Ｄｖを順次接続したことである。
隣接する駆動回路Ｄｖにおいて、マイクロスイッチＭ２の固定接点ｂ２は、接続路３６を介してマイクロスイッチＭ１の可動接片Ａ１に接続されている。自動解錠の場合、主スイッチ３１の投入操作により駆動モータ１０を駆動すると、最左端の駆動回路Ｄｖが図７の（イ）から（ニ）と同様に作動し、第２実施例と同様に図９の最左端の開閉窓２を開放する。最左端の駆動回路Ｄｖが図７の（ハ）と同様な段階で最左端の開閉窓２を開放した時、接続路３６により二番目の駆動回路Ｄｖの通電路３３が通電状態となる。
【００３５】
これにより、二番目の駆動回路Ｄｖが図７の（イ）から（ニ）と同様に作動し、第２実施例と同様に図９の二番目の開閉窓２を開放する。二番目の駆動回路Ｄｖが図７の（ハ）と同様な段階で二番目の開閉窓２を開放した時、接続路３６により三番目の駆動回路Ｄｖのバイパス路３２が通電状態となる。このため、三番目の駆動回路Ｄｖが図７の（イ）から（ニ）と同様に作動し、第２実施例と同様に図９の三番目の開閉窓２を開放する。
【００３６】
このように、接続路３６によりバイパス路３２が順に通電状態となって駆動回路Ｄｖの駆動モータ１０を左端から右端に順に駆動するため、最左端の開閉窓２が開放した後、右側に隣接する二番目、三番目、四番目の開閉窓２が時間差（約１秒間）をもって次々に開放される（順次開放モード）。この順次開放モードでは、所定の時間差をもって各開閉窓２が一台づつ順に作動されるので、０．３Ａ×開閉窓２の１台分の少ない電流容量で済む。このため、０．３Ａ×開閉窓２の台数分の電流容量を必要とする一斉開放モードと異なり、電気配線部に大容量の電流が一度に流れることを回避できる。
【００３７】
図１２は本発明の第４実施例を示す。第４実施例では、第１実施例と同一部材には同一符号を付して異なる部分のみ説明する。第４実施例が、第１実施例と異なるところは開閉窓２を室内側に開放させる内倒し窓に適用したことである。
第４実施例における施錠プレート５は、施錠穴６が設けられていない無孔板である。開閉窓２の閉鎖時、施錠プレート５の先端部が舌片部１４に当接して開閉窓２を閉鎖位置に保持している。開閉窓２の開放時にラッチ１１の舌片部１４が上昇変位するため、舌片部１４に対する施錠プレート５の先端部５ａの当接が解除される。このため、開閉窓２が図１２の（イ）から（ロ）に示すように室内側に傾斜状態に倒れる。
【００３８】
図１３は本発明の第５実施例を示す。第５実施例では、第１実施例と同一部材には同一符号を付して異なる部分のみ説明する。第５実施例では、支軸２０ａを耳部１９ａ、１９ｂとともに一体化したスライダー部１９を設けている。スライダー部１９の支軸２０ａは、支持部材２０の左右の縦片部２０Ａ、２０Ｂに対し左右に移動できるように設けられている。このため、手動解錠時にワイヤー２５の引下げ操作によりスライダー部１９が支軸２０ａとともに一体に移動する。この移動により、第１実施例の図３と同様に切欠カム部２１がラッチ軸１８を押し出して解錠位置に上昇変位させる。
【００３９】
図１４ないし図１７は本発明の第６実施例を示す。第６実施例では、第１実施例と同一部材には同一符号を付して異なる部分のみ説明する。第６実施例のピン柱４０は、ラッチ１１の図示左方に位置して上下方向に移動可能に設けられている。ピン柱４０は上端部に押圧片部４０ａ、４０ｂを形成し、下端部に円弧状の摺動部４０ｃを設けている。開窓時にピン柱４０は、圧縮コイルスプリング４１の付勢力により下方の施錠位置に移動して押圧片部４０ａ、４０ｂによりマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３を閉成する（図１４および図１５参照）。閉窓時にピン柱４０の摺動部４０ｃがラッチ１１とともに逆Ｌ字形の施錠プレート４２の水平片部４２ａに押し上げられ、押圧片部４０ａ、４０ｂがマイクロスイッチＭ２、Ｍ３の可動接片Ａ２、Ａ３を開成する（図１６および図１７参照）。第６実施例では、ピン柱４０がラッチ１１とともに共通の水平片部４２ａに押し上げられるので、マイクロスイッチＭ１、Ｍ２、Ｍ３の可動接片Ａ１、Ａ２、Ａ３を作動させるタイミングを調整し易い便宜が得られる。
【００４０】
図１８および図２０は本発明の第７実施例を示す。第７実施例では、第１実施例と同一部材には同一符号を付して異なる部分のみ説明する。第７実施例では、第１実施例のスライダー部１９の切欠カム部２１に代わって解錠手段としてのラック部４３を設け、ラッチ軸１８の前端部に円形カム４５を偏芯状態に連結して後端部にピニオン４６を連結している（図１８おび図１９参照）。ピニオン４６はラック部４３に噛合し、円形カム４５は、ラッチガイド９の後端面に形成された連通口９ｂに近接して解錠手段を構成している。ラッチ１１の後端部には、連通口９ｂから突き出る押上片１１Ａが形成されて円形カム４５の外周部に摺接している。開窓時にワイヤー２５によりスライダー部１９を矢印Ｑ方向に移動させると、図２０の（ロ）に示すようにラッチ軸１８のピニオン４６を介して円形カム４５が矢印Ｒ方向に回転し、図２０の（イ）に示すように押上片１１Ａを押し上げてラッチ１１を施錠位置から解錠位置に移動させる。
【００４１】
上記第１〜７実施例では、自動解錠時用に駆動モータ１０を設けたが、本発明の第８実施例として駆動モータ１０を矩形箱８内から取り外し、ワイヤー２５による手動操作のみによりラッチ１１の解錠を行う構造にすることができる。
【００４２】
（変形例）
なお、上記実施例では被施錠物として開閉窓２を適用したが、開閉窓２ばかりでなく下記の場合に適用することができる。
（ａ）はね上げ式のスイングドア（手動あるいは電動で解錠）、
（ｂ）遮蔽用のスクリーンをロール状に巻き上げて保持するための防煙スクリーンおよび防火スクリーン（手動あるいは電動で解錠）、
（ｃ）防煙垂壁に用いて閉鎖位置に保持する（手動あるいは電動で解錠）、
（ｄ）防火戸に用いて開放状態に保持する（手動あるいは電動で閉鎖）、
（ｅ）自閉式スライディングドアに使用して開放状態に保持する（手動あるいは電動で閉鎖）、
（ｆ）開放付勢手段と併設して排煙装置とすることができるスライディングドアのクレセント（手動あるいは電動で解錠）、
（ｇ）防火ダンパーに用いて開口部を開放状態に保持する（手動あるいは電動で閉鎖）。
【００４３】
また、上記実施例ではワイヤー２５を索条部材として用いたが、ワイヤー２５に限らず帯、紐、ケーブル、補強繊維などスライダー部１９を移動させることができるものであればよい。
ラッチ鍔１３を変位させるカム部１７は、略半円板状に限らず楕円状、三角状など所望のカムプロフィールに形成することができる。
開閉窓２の開放は、ワイヤー２５の引手部Ｓ１、Ｓ２を引くことにより行ったが、インナーワイヤーとアウターワイヤーとを用いてインナーワイヤーをアウターワイヤーに沿って押圧すことにより行ってもよい。
【００４４】
開閉窓２の開表示部用の表示部としてランプ３４を用いたが、ランプ３４に限らず発光ダイオード（ＬＥＤ）でもよく、ブザーを鳴動させたりメロディを奏でる音響部材を作動させてもよい。
４連窓の順次開放モードでは、約１秒の時間差をもって各開閉窓２を順次開放したが、この時間差は約１秒に限らず遅延回路などを用いて所望に設定することができる。
本発明の具体的な実施にあたっては、ランプ３４の設置場所は、開閉窓２の近辺、防災施設や警備施設の集中管理室に限らず、モニター付の監視室などでもよく、開閉窓２は４連窓に限らないなど本発明の要旨を逸脱しない範囲で種々変更することができる。
【図面の簡単な説明】
【図１】（イ）は閉鎖時の開閉窓の縦断面図、（ロ）は開放時の開閉窓の縦断面図である（第１実施例）。
【図２】ラッチ錠を示す上面図である。
【図３】（イ）は開閉窓の閉鎖時における図２のＡ−Ａ線に沿う縦断面図、（ロ）は開閉窓の開放時における図２のＡ−Ａ線に沿う縦断面図である。
【図４】図２のＢ−Ｂ線に沿う縦断面図である。
【図５】（イ）は開閉窓の閉鎖時における図４のＣ−Ｃ線に沿う横断面図、（ロ）は開閉窓の開放時における図４のＣ−Ｃ線に沿う横断面図である。
【図６】開閉窓を単一の窓として示す正面図である。
【図７】（イ）〜（ニ）は開閉窓の開放を段階的に示す電気結線図である。
【図８】（イ）はカム部の下限位置を示す側面図、（ロ）はカム部の上限位置を示す側面図である。
【図９】開閉窓を４連窓として示す正面図である（第２実施例）。
【図１０】開閉窓の一斉開放モードを行う電気結線図である。
【図１１】開閉窓の順次開放モードを行う電気結線図である（第３実施例）。
【図１２】（イ）は閉鎖時の開閉窓の側面図、（ロ）は開放時の開閉窓の側面図である（第４実施例）。
【図１３】ラッチ錠を示す上面図である（第５実施例）。
【図１４】ラッチ錠を示す上面図である（第６実施例）。
【図１５】図１４のＥ−Ｅ線に沿う縦断面図である。
【図１６】開閉窓を閉鎖状態にした時のラッチ錠を示す縦断面図である。
【図１７】開閉窓の閉鎖時における図１６のＦ−Ｆ線に沿う横断面図である。
【図１８】ラッチ錠を示す上面図である（第７実施例）。
【図１９】スライダー部、ラック部、円形カム、ラッチガイドおよびラッチの拡大分解斜視図である。
【図２０】（イ）は解錠時のラッチ錠を示す横断面図、（ロ）は施錠時のラッチ錠を示す横断面図である。
【符号の説明】
２開閉窓（被施錠物）
４ステイダンパー（付勢部材）
７ラッチ錠
９ラッチガイド
９ａ天井部
１０駆動モータ（解錠手段）
１１ラッチ
１１ａ水平片部
１３ラッチ鍔（解錠手段）
１４舌片部
１５圧縮コイルスプリング（付勢部材）
１６回転軸（解錠手段）
１７カム部（解錠手段）
１８ラッチ軸（解錠手段）
１９スライダー部（解錠手段）
２１切欠カム部
２２、２３圧縮コイルスプリング（位置付勢部材）
２５ワイヤー（索条部材）
２９、４０ピン柱
３１主スイッチ
３１Ａ制御部
３４ランプ（表示部）
４３ラック部（解錠手段）
４５円形カム（解錠手段）
４６ピニオン（解錠手段）
Ｐｗ電源
Ｍ１マイクロスイッチ
ａ１、ｂ１固定接点
Ａ１可動接片 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a latch lock having an improved unlocking structure for a locked object such as an opening / closing window of a building.
[0002]
[Prior art]
The opening / closing window located at the relatively upper part of a building such as a house is provided for ventilation and lighting, etc., and the locking mechanism is always used to lock the opening / closing window by a locking device. It is locked as a thing. Pull the wire of the locking device (smoke lock) by hand to displace air during ventilation and smoke in case of emergency such as a fire, displace the lock mechanism, unlock the window frame, and open the open / close window . As an example of the locking device, a window closing device for a window opening / closing device has appeared (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-317789
[0004]
[Problems to be solved by the invention]
In the above-mentioned closed window lock device, the swinging hook is engaged with and disengaged from the hook receiving shaft by the swinging operation during the closing and opening operation. For this reason, the engaging / disengaging operation of the swinging hook with respect to the hook receiving shaft is unstable, and there is a problem in the reliability of the locking / unlocking operation. In addition, due to the nature of the wire that is pulled by hand when the opening / closing window is opened, there is a limit to the extension length of the wire, and the wire is generally provided near the opening / closing window. For this reason, there is a disadvantage that the wire cannot be remotely operated from a safe place in an emergency such as a fire. In addition, because it is the limit of four windows that can be opened at one time by manual operation of the wire, when the number of open / close windows is increased, such as five windows, it is necessary to open the windows separately. . For this reason, manual operation of the wire has to be repeated, and there is a disadvantage that the emergency evacuation time is prolonged when escaping from a fire or the like. In particular, when an infant or a handicapped person who does not manually operate the wire is open, the opening / closing window may not be opened, or even if it is performed, it may take a long time and may not be in time for emergency evacuation.
[0005]
The present invention has been made in view of the above circumstances, and its first object is that the latch accurately engages and disengages the object to be locked in accordance with the locking / unlocking operation. It is to provide a latch lock that can be performed.
A second object of the present invention is to allow unlocking of locked objects by manual operation or electric operation. In the case of electric operation, the number of locked objects to be installed and the time of unlocking by remote operation from a predetermined place. It is an object of the present invention to provide a latch lock capable of automatically unlocking a locked object at once regardless of the operator's incompetence.
[0006]
[Means for Solving the Problems]
(About claim 1)
  A latch that is provided so as to be movable in the direction of separation with respect to the locked object, and is always urged by a biasing member in a direction close to the locked object to lock the locked object in a locked position by engagement; A drive motor in which a cam portion that is slidably contacted with a latch rod formed on the latch is fitted to the rotation shaft, and the cam portion is energized to the drive motor during automatic operation.From the original position that is the predetermined rotation stateWhile slidably contacting the latch rod through the rotating shaftPredetermined angleAn unlocking means that rotates, disengages the latch, and displaces from the locked position to an unlocked position away from the locked object against the biasing force of the biasing member;After unlocking the object to be locked, the cam part is further rotated by a certain angle in the same direction, and then the drive motor is stopped by de-energization, and the cam part is returned to the original position, Locking return means for returning to the locked position so as to prepare for engagement of the latch with the locked object;The unlocking means includes a latch shaft provided in the latch oriented in a direction perpendicular to a moving direction of the latch with respect to the locked object, and a notch cam portion for engaging the latch shaft, A slider portion for moving the latch shaft from the notch cam portion by moving in a direction perpendicular to a moving direction of the latch shaft to displace the latch from the locking position to the unlocking position; and A position biasing member that biases the slider portion in a direction in which the notch cam portion always engages the latch shaft to be held in position, and a position biasing member that is connected to the slider portion and that is attached to the position biasing member during manual operation. And a strip member that moves the slider portion against a force to displace the latch from the locked position to the unlocked position.
[0007]
(Claim 2)
  AboveLocked objectIs an opening / closing window of a building, and the opening / closing window is opened by displacing the latch from the locked position to the unlocked position when the building is ventilated or smoke is exhausted.It is characterized by that.
[0008]
(Claim 3)
  SaidA display unit that operates to display the opening / closing window at a predetermined place when the opening / closing window is opened by displacing the latch from the locking position to the unlocking position during ventilation or smoke emission of a building; ProvidedIt is characterized by that.
[0009]
(About claim 4)
  When the latch is held in the locked position, the opening / closing window is closed against the biasing force of the biasing member, and when the opening / closing window is opened, the opening / closing window is biased by the biasing member. It is characterized by being opened by.
(Claim 5)
  The object to be locked is a shielding screen installed at an opening of a building. The shielding screen is held in a rolled up state and unlocked by manual operation or electric operation.
[0010]
Operation and effect of the invention
(About claim 1)
When the object to be locked is locked, the latch is engaged with the object to be locked and locked at the locking position, and when unlocked, the latch is disengaged by the unlocking means to unlock the object to be locked. Since the locking / unlocking operation for the locked object is performed by engaging / disengaging the latch with respect to the locked object, the engagement / disengagement state of the latch with respect to the locked object is ensured, and the locking / unlocking operation can be performed with high reliability. it can.
[0011]
  LaThe latch is always urged by the urging member in the direction approaching the locked object to lock the locked object in the locked position. In the drive motor, the cam portion fitted to the rotating shaft is brought into sliding contact with the latch rod.During automatic operation,When the drive motor is energized, the cam portion rotates while sliding on the latch rod through the rotating shaft. For this reason, the latch automatically displaces from the locked position to the unlocked position away from the locked object against the urging force of the urging member to unlock the locked object.
[0012]
As a result, the locked objects can be automatically unlocked all at once regardless of the number of the locked objects to be installed and the operator's incompetence during unlocking. When a locked object is applied to a building opening / closing window, the opening / closing window opens without delay, so that indoor air can be smoothly exchanged during ventilation, and smoke can be quickly exhausted from the building in the event of an emergency such as a fire. Useful for emergency blame. Nevertheless, the unlocking operation of the opening / closing window only requires a relatively simple structure, in which the cam part is fitted on the rotating shaft of the drive motor and slidably contacted with the latch rod, contributing to space saving and cost reduction. To do.
[0013]
  SolutionIn the locking means, the latch shaft is provided in the latch, the notch cam portion is formed in the slider portion, and the latch shaft is engaged with the notch cam portion. The position biasing member biases the latch shaft in a direction in which the latch shaft is always engaged with the notch cam portion of the slider portion, and holds the latch shaft in the locked position. When the slider member is moved in a predetermined direction against the position urging member by manual operation of the rope member, the latch shaft comes out of the notch cam portion and the latch is displaced from the locking position to the unlocking position. Since the latch is displaced to the unlocking position and the locked object is unlocked by manual operation of the rope member, it is possible to manually unlock the locked object and selectively perform automatic unlocking and manual unlocking. There is an advantage that can be.
  When the object to be locked is applied to an opening / closing window of a building and manual unlocking is selected, the object can be opened while visually checking the opening / closing window in the vicinity of the opening / closing window. For this reason, the exchange of room air can be confirmed at the time of ventilation, and the smoke exhaust from the building can be confirmed quickly in the event of an emergency such as a fire. Accordingly, there is an advantage that the opening / closing window can be opened by manual unlocking when the opening / closing window cannot be opened in time due to a power failure or electrical failure.
[0014]
(Claims2about)
  Since the locked object is an opening / closing window of a building, the same effect as that obtained when the locked object is applied to the opening / closing window of the building according to claim 1 can be obtained when the building is ventilated or smoke is exhausted.
(ClaimsTo 3about)
  If the object to be locked is a building opening / closing window and the building is ventilated or smoke exhausted, the latch is moved from the locking position to the unlocking position and the opening / closing window is opened to display the opening / closing window display. Operates. Since the opening of the opening / closing window can be confirmed on the display unit, when automatic unlocking and manual unlocking can be selectively performed, the opening / closing window is opened by the automatic unlocking but the opening / closing window is opened for manual unlocking. It is possible to avoid useless overlapping operations such as energizing the drive motor for automatic unlocking even when the door is approached or the opening / closing window is opened by manual unlocking.
[0015]
(Claims4about)
  When the object to be locked is a building opening / closing window, the opening / closing window is closed against the urging force of the urging member. With the unlocking of the latch, the opening / closing window is opened while being supported by the urging force of the urging member. For this reason, there is an advantage that the opening and closing windows are opened smoothly and quickly when the building is ventilated or smoke is exhausted, so that the indoor air can be exchanged or the smoke exhaustion operation can be performed quickly.
(Claim 5)
  When the object to be locked is applied to a shielding screen installed at an opening of a building, the shielding screen can be held in a rolled-up state and unlocked by manual operation or electric operation.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of the present invention. The frame 1 is fitted into an opening (not shown) provided on the outer wall surface of the building as shown in FIGS. In the frame 1, an opening / closing window 2 is attached as an object to be locked so that it can be opened / closed and rotated in the vertical direction toward the outside by a lower hinge 3 as an inverted window. The open / close window 2 is located at a relatively upper portion on the indoor side in the building, and is mainly used for exhausting smoke during emergency such as lighting, ventilation, and fire. A stay damper 4 is stretched between the window frame 2 a of the opening / closing window 2 and the vertical beam portion of the frame 1 as a biasing member in the opening direction of the opening / closing window 2. A substantially L-shaped locking plate 5 of the latch lock 7 is attached to the upper collar portion of the window frame 2a, and a tip end portion thereof extends indoors to form a locking hole 6.
[0017]
The latch lock 7 is attached to the indoor side above the frame 1 and includes a drive motor 10, a latch guide 9 and a latch 11 having a substantially U-shaped cross section in a rectangular box 8 shown in FIG. The latch 11 is provided so as to be movable in the vertical direction along the latch guide 9. As shown in FIG. 4, the latch 11 has latch rods 12 and 13 on the upper left and right sides, and an arcuate tongue portion 14 is formed on the lower portion. ing. A compression coil spring 15 is provided as a biasing member between the ceiling 9a of the latch guide 9 and the horizontal piece 11a of the latch 11, and biases the latch 11 downward to displace it to the locking position. At this time, the tongue piece portion 14 of the latch 11 locks the latch 11 in the locking hole 6 of the locking plate 5 by engagement, and locks the opening / closing window 2 in the closed state as shown in FIG. At this time, the latch rod 12 of the latch 11 presses a movable contact piece A1 of a normally open microswitch M1 described later (FIGS. 2 and 7).
[0018]
The drive motor 10 is energized and driven by a power source Pw (FIG. 7) at, for example, DC 24 V (0.3 A / window). As shown in FIG. 5 (a), the rotary shaft 16 of the drive motor 10 is fitted with a substantially semi-disc-shaped cam portion 17 that is in sliding contact with the latch rod 13 of the latch 11 to constitute an unlocking means. . The cam portion 17 includes an arc portion 17a and a straight portion 17b. As the cam portion 17 rotates, the arc portion 17a slides on the latch rod 13 from the locking position where the straight portion 17b is substantially flush with the latch rod 13, so that the latch 11 is shown in FIG. Push up. For this reason, the tongue piece part 14 of the latch 11 is disengaged from the locking hole 6 of the locking plate 5 and is displaced to the unlocking position where the locking of the opening / closing window 2 is released.
[0019]
A latch shaft 18 is attached to the latch 11 so as to be oriented in a direction substantially perpendicular to the moving direction of the latch 11. A flat substantially U-shaped support member 20 is provided so as to be orthogonal to the latch shaft 18. A support shaft 20a is stretched between the vertical piece portions 20A and 20B of the support member 20. A horizontally long piece-like slider portion 19 that forms an unlocking means together with the latch shaft 18 is connected to the support shaft 20a through the ear portions 19a and 19b so as to be movable left and right. As shown in FIG. 3A, a valley-shaped notch cam portion 21 with which the latch shaft 18 is engaged is formed in the central portion of the slider portion 19. By the movement of the slider portion 19 in the left-right direction, the notch cam portion 21 pushes out the latch shaft 18 as shown in FIG. For this reason, the latch 11 moves upward and is displaced from the locked position to the unlocked position.
[0020]
Compression coil springs 22 and 23 are provided as position biasing members between the vertical piece 20A and the ear 19a of the support member 20 and between the vertical piece 20B and the ear 19b. For this reason, the slider part 19 exists in the position pinched | interposed between the compression coil springs 22 and 23, and the notch cam part 21 is hold | maintained in the locking position which engages the latch shaft 18. FIG. The slider portion 19 connects the wire 25 for manual operation via the connecting piece portion 24 as a rope member. As shown in FIG. 6, the left and right ends of the wire 25 are connected to pulling portions S <b> 1 and S <b> 2 that hang down indoors through pulleys 26 and 27 provided on the indoor wall.
[0021]
A through hole 28 is formed in the front portion of the rectangular box 8 as shown in FIG. 2, and a stepped pin column 29 is slidably provided in the through hole 28 in the axial direction. A protrusion ring 29b is formed in a portion of the pin post 29 in the rectangular box 8, and the protrusion ring 29b is brought into contact with the outer peripheral edge of the through hole 28 so that the pin post 29 does not come out. A compression coil spring 30 is provided as a return biasing member for the pin column 29 between a contact head 29 a formed at the tip of the pin column 29 and the inner peripheral edge of the through hole 28.
In a state in which the opening / closing window 2 is closed, the pin column 29 is pushed by the window frame 2 a through the contact head 29 a and is retracted into the rectangular box 8 against the urging force of the compression coil spring 30. As the pin column 29 is retracted, the compression coil spring 30 urges the pin column 29 in the forward direction with the stored energy by compression. In this retracted position, a tapered portion 29c formed at the rear end portion of the pin post 29 presses movable contact pieces A2 and A3 of normally open microswitches M2 and M3 described later (FIG. 7).
[0022]
In FIG. 7 showing an electrical connection diagram in which the drive motor 10 is incorporated, the main switch 31 constituting the control unit 31A is provided in the vicinity of the opening / closing window 2 indoors as a predetermined place during ventilation, and the opening / closing window 2 during ventilation is provided. The main switch 31 can be operated in the vicinity of. In the event of an emergency such as a fire, a smoke detector (not shown) reports an emergency to a central control room such as a disaster prevention facility or a security facility and automatically operates the main switch 31 remotely from the central control room.
[0023]
When the main switch 31 is turned on in the vicinity of the opening / closing window 2 or in response to a command from the central control room, the drive motor 10 is connected to the bypass path 32 of the microswitch M2 of the drive circuit Dv as shown in FIG. Is energized through. Therefore, the rotation of the rotating shaft 16 of the drive motor 10 causes the cam portion 17 to rotate approximately 270 ° counterclockwise from the lower limit position shown in FIG. 8A to the upper limit position shown in FIG. . Along with this, the latch 11 is displaced upward from the locking position to the unlocking position, and the tongue piece portion 14 comes out of the locking hole 6 of the locking plate 5. Due to the upward displacement of the latch 11, the latch rod 13 is separated from the movable contact piece A1 of the micro switch M1, and the movable contact piece A1 is switched from the fixed contact a1 to the fixed contact b1 as shown in FIG. An energization path 33 is formed.
[0024]
At this time, since the contact state of the pin column 29 with respect to the window frame 2 a is released, the pin column 29 is pushed out from the through hole 28 by the stored force of the compression coil spring 30. As the pin column 29 is pushed outward, the taper portion 29c moves away from the movable contact pieces A2 and A3 of the micro switches M2 and M3. Therefore, as shown in FIG. 7C, the movable contact pieces A2 and A3 are switched from the fixed contacts a2 and a3 to the fixed contacts b2 and b3. By switching the micro switch M2, the bypass path 32 is de-energized, and by switching the micro switch M3, the open display lamp 34 of the open / close window 2 is turned on as a display unit. The lamp 34 is provided indoors in the vicinity of the opening / closing window 2 or in a central management room of a disaster prevention facility or a security facility, and notifies the opening of the opening / closing window 2 when the lamp 34 is turned on.
[0025]
When the cam portion 17 is rotated approximately 90 ° counterclockwise from the upper limit position shown in FIG. 8B, the cam portion 17 returns to the original lower limit position shown in FIG. For this reason, the latch 11 is displaced downward by the urging force of the compression coil spring 15, and the latch rod 12 presses the movable contact piece A1 of the micro switch M1. As shown in FIG. 7D, the movable contact piece A1 is switched from the fixed contact b1 to the fixed contact a1, and the drive motor 10 is stopped by de-energization.
[0026]
In order to return the open / close window 2 to the original closed position after ventilation or smoke exhaust, the main switch 31 is returned to the OFF state, and then the open / close window is opened using a long operation rod (not shown) having a hook portion at the tip. Hook on 2 and pull it indoors. As a result, the opening / closing window 2 returns to the closed position in the frame 1, and the tongue piece portion 14 of the latch 11 engages in the locking hole 6 of the locking plate 5, thereby locking the opening / closing window 2.
As the opening / closing window 2 is closed, the window frame 2a pushes the contact head 29a of the pin column 29 into the rectangular box 8 against the urging force of the compression coil spring 30, and the taper portion 29c is connected to the micro switches M2 and M3. The movable contact pieces A2 and A3 are pressed. Therefore, the movable contact pieces A2 and A3 are switched from the fixed contacts b2 and b3 to the fixed contacts a2 and a3 as shown in FIG. 7 (a), the bypass path 32 is energized and the open display lamp 34 is switched on. Turns off when no power is applied.
[0027]
In the above configuration, the drive motor 10 is energized, the latch 11 is extracted from the locking hole 6 of the locking plate 5, and the locking of the opening / closing window 2 is unlocked by automatic unlocking. Even if automatic unlocking is not used, the unlocking of the opening / closing window 2 can be unlocked by manual unlocking by manually operating the wire 25. That is, when the opening / closing window 2 is in the closed position in the frame 1, the wire 25 is pulled by one of the pulling portions S1 and S2 shown in FIG. As a result, the slider 19 moves in either the left or right direction against the biasing force of one of the compression coil springs 22 and 23 via the connecting piece 24. For this reason, the latch shaft 18 is pushed by the notch cam portion 21 and ascends to a position indicated by (B) from (A) in FIG. As the latch shaft 18 is raised, the latch 11 is displaced upward from the locked position to the unlocked position, and the tongue piece 14 of the latch 11 comes out of the locking hole 6 of the locking plate 5 so that the opening / closing window 2 is unlocked. Therefore, as in the case of automatic unlocking, the opening / closing window 2 is opened to the outdoor side by the biasing force of the stay damper 4 as shown in FIG.
[0028]
When the lock of the opening / closing window 2 by the latch 11 is released, the tapered portion 29c of the pin post 29 is separated from the movable contact pieces A2 and A3 of the micro switches M2 and M3 as in the case of automatic unlocking. As shown in FIG. 7C, the movable contact pieces A2 and A3 are switched from the fixed contacts a2 and a3 to the fixed contacts b2 and b3. By switching the micro switch M2, the bypass path 32 is de-energized, and by switching the micro switch M3, the lamp 34 for opening display of the open / close window 2 is lit. In order to return the opening / closing window 2 to the original closed position after ventilation or smoke exhaustion, it may be hooked on the opening / closing window 2 using a long operating bar as in the case of automatic unlocking and pulled indoors.
[0029]
As described above, the unlocking of the opening / closing window 2 can be performed manually and electrically. In the case of electricity, the cam portion 17 rotates while sliding on the latch rod 13 by energizing the drive motor 10. The latch 11 is automatically raised from the locked position to the unlocked position against the urging force of the compression coil spring 15 to unlock the open / close window 2. Thereby, the open / close windows 2 can be automatically unlocked at a time regardless of the number of open / close windows 2 (number of continuous windows) and the operator's inability. Since the opening / closing window 2 is automatically opened without delay, indoor air can be exchanged smoothly during ventilation, and smoke is quickly discharged from the building in the event of an emergency such as a fire, which is useful for emergency blame. Nevertheless, the unlocking operation of the opening / closing window 2 requires a relatively simple structure in which the cam portion 17 is fitted on the rotating shaft 16 of the drive motor 10 and is slidably contacted with the latch rod 13. Contributes to cost reduction.
[0030]
When unlocking manually, the slider portion 19 is pulled against the urging force of the compression coil springs 22 and 23 by manual operation of the wire 25, and the latch shaft 18 is pushed out by the notch cam portion 21 to remove the latch 11 from the locked position. Displace to unlocked position. Since the latch 11 is displaced to the unlocking position by manual operation of the wire 25 and unlocks the opening / closing window 2, the opening / closing window 2 can be manually unlocked, and there is an advantage that automatic unlocking and manual unlocking can be selected.
When manual unlocking is selected for the opening operation of the open / close window 2, the open / close window 2 can be opened while visually checking, so that the exchange of room air can be confirmed during ventilation, and the building can be quickly discharged from the building in the event of an emergency such as a fire. You can see the smoke. For this reason, when opening of the opening / closing window 2 by automatic unlocking is not in time, there is an advantage that the opening / closing window 2 can be opened by manual unlocking.
[0031]
When the latch 11 is displaced from the locked position to the unlocked position when the opening / closing window 2 is opened, the lamp 34 for opening display of the opening / closing window 2 is turned on. The opening of the opening / closing window 2 can be visually recognized by the lamp 34. For this reason, when automatic unlocking and manual unlocking can be selectively performed, the open / close window 2 is opened by the automatic unlocking, but it approaches the open / close window 2 for manual unlocking, or by manual unlocking. Although the opening / closing window 2 is opened, it is possible to avoid a wasteful overlapping operation in which the drive motor 10 is energized by the main switch 31 for automatic unlocking.
[0032]
9 and 10 show a second embodiment of the present invention. In the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals and only different portions will be described.
In the second embodiment, as shown in FIG. 9, four open / close windows 2 are provided in place of the single open / close window 2 (four continuous windows). A latch lock 7 is attached to each opening / closing window 2, and each slider portion 19 is connected by a wire 25, and left and right ends of the wire 25 have pulling portions S 1 and S 2 that hang down via pulleys 26 and 27. A drive circuit Dv is provided corresponding to the latch lock 7 installed in each opening / closing window 2. The energization path 33 of each drive circuit Dv is connected in parallel to the control unit 31A as shown in FIG.
[0033]
For this reason, in the case of automatic unlocking, when the drive motor 10 is driven by turning on the main switch 31, each drive circuit Dv operates in the same manner as (a) to (d) in FIG. Open all at once (broadcast mode).
In the case of manual locking, when one of the pulling portions S <b> 1 and S <b> 2 is pulled, the slider portion 19 moves in either the left or right direction via the wire 25 and the connecting piece portion 24. For this reason, the latch shaft 18 is pushed upward by the notch cam portion 21 as in FIG. For this reason, the latch 11 is lifted and displaced from the locking position to the unlocking position, and the engagement of the tongue piece 14 with the locking hole 6 is released to unlock the opening / closing window 2.
[0034]
FIG. 11 shows a third embodiment of the present invention. In the third embodiment, the same members as those in the second embodiment are denoted by the same reference numerals and only different portions will be described. The third embodiment is different from the second embodiment in that the drive circuits Dv are sequentially connected.
In the adjacent drive circuit Dv, the fixed contact b2 of the microswitch M2 is connected to the movable contact piece A1 of the microswitch M1 via the connection path 36. In the case of automatic unlocking, when the drive motor 10 is driven by turning on the main switch 31, the leftmost drive circuit Dv operates in the same manner as in (a) to (d) of FIG. The leftmost opening / closing window 2 in FIG. 9 is opened. When the leftmost drive circuit Dv opens the leftmost opening / closing window 2 at the same stage as in FIG. 7C, the energization path 33 of the second drive circuit Dv is energized by the connection path.
[0035]
As a result, the second drive circuit Dv operates in the same manner as (a) to (d) in FIG. 7 and opens the second opening / closing window 2 in FIG. 9 as in the second embodiment. When the second drive circuit Dv opens the second opening / closing window 2 at the same stage as in FIG. 7C, the bypass path 32 of the third drive circuit Dv is energized by the connection path. Therefore, the third drive circuit Dv operates in the same manner as (a) to (d) in FIG. 7 and opens the third opening / closing window 2 in FIG. 9 as in the second embodiment.
[0036]
In this way, the bypass path 32 is sequentially energized by the connection path 36 to drive the drive motor 10 of the drive circuit Dv sequentially from the left end to the right end, so that the leftmost open / close window 2 is opened and then adjacent to the right side. The second, third and fourth open / close windows 2 are opened one after another with a time difference (about 1 second) (sequential open mode). In this sequential opening mode, each of the open / close windows 2 is sequentially operated one by one with a predetermined time difference, so that a current capacity as small as 0.3 A × 1 open / close window 2 is sufficient. For this reason, unlike the simultaneous open mode that requires a current capacity equivalent to the number of 0.3 A × opening and closing windows 2, it is possible to avoid a large amount of current flowing through the electric wiring portion at one time.
[0037]
FIG. 12 shows a fourth embodiment of the present invention. In the fourth embodiment, the same members as those in the first embodiment are denoted by the same reference numerals and only different portions will be described. The fourth embodiment differs from the first embodiment in that the fourth embodiment is applied to an inward window that opens the opening / closing window 2 to the indoor side.
The locking plate 5 in the fourth embodiment is a non-perforated plate in which the locking holes 6 are not provided. When the open / close window 2 is closed, the tip of the locking plate 5 abuts against the tongue piece 14 to hold the open / close window 2 in the closed position. When the opening / closing window 2 is opened, the tongue piece 14 of the latch 11 is displaced upward, so that the contact of the tip 5a of the locking plate 5 with the tongue piece 14 is released. For this reason, the opening / closing window 2 falls in an inclined state indoors as shown in FIGS.
[0038]
FIG. 13 shows a fifth embodiment of the present invention. In the fifth embodiment, the same members as those in the first embodiment are denoted by the same reference numerals and only different portions will be described. In the fifth embodiment, a slider portion 19 is provided in which the support shaft 20a is integrated with the ear portions 19a and 19b. The support shaft 20a of the slider portion 19 is provided so as to be movable left and right with respect to the left and right vertical piece portions 20A and 20B of the support member 20. For this reason, the slider part 19 moves integrally with the spindle 20a by pulling-down operation of the wire 25 at the time of manual unlocking. As a result of this movement, the notch cam portion 21 pushes the latch shaft 18 up and displaces it to the unlocked position, as in FIG. 3 of the first embodiment.
[0039]
14 to 17 show a sixth embodiment of the present invention. In the sixth embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and only different portions will be described. The pin column 40 of the sixth embodiment is provided on the left side of the latch 11 in the figure so as to be movable in the vertical direction. The pin column 40 is formed with pressing pieces 40a and 40b at the upper end and an arcuate sliding portion 40c at the lower end. When the window is opened, the pin column 40 is moved to the lower locking position by the urging force of the compression coil spring 41, and the movable contact pieces A2 and A3 of the micro switches M2 and M3 are closed by the pressing pieces 40a and 40b (FIG. 14). And FIG. 15). When the window is closed, the sliding portion 40c of the pin column 40 is pushed up together with the latch 11 to the horizontal piece 42a of the inverted L-shaped locking plate 42, and the pressing pieces 40a and 40b are movable contact pieces A2 and A3 of the micro switches M2 and M3. (See FIG. 16 and FIG. 17). In the sixth embodiment, the pin column 40 is pushed up together with the latch 11 to the common horizontal piece 42a, so that it is easy to adjust the timing for operating the movable contact pieces A1, A2, A3 of the microswitches M1, M2, M3. can get.
[0040]
18 and 20 show a seventh embodiment of the present invention. In the seventh embodiment, the same members as those in the first embodiment are denoted by the same reference numerals and only different portions will be described. In the seventh embodiment, a rack portion 43 as an unlocking means is provided in place of the notched cam portion 21 of the slider portion 19 of the first embodiment, and the circular cam 45 is connected to the front end portion of the latch shaft 18 in an eccentric state. The pinion 46 is connected to the rear end (see FIGS. 18 and 19). The pinion 46 meshes with the rack portion 43, and the circular cam 45 constitutes an unlocking means in the vicinity of the communication port 9b formed on the rear end surface of the latch guide 9. A push-up piece 11A protruding from the communication port 9b is formed at the rear end portion of the latch 11, and is in sliding contact with the outer peripheral portion of the circular cam 45. When the slider portion 19 is moved in the arrow Q direction by the wire 25 during the opening of the window, the circular cam 45 rotates in the arrow R direction through the pinion 46 of the latch shaft 18 as shown in FIG. As shown in (a), the push-up piece 11A is pushed up to move the latch 11 from the locked position to the unlocked position.
[0041]
In the first to seventh embodiments, the drive motor 10 is provided for automatic unlocking. However, as an eighth embodiment of the present invention, the drive motor 10 is removed from the rectangular box 8 and latched only by manual operation with the wire 25. 11 can be unlocked.
[0042]
(Modification)
In addition, in the said Example, although the opening / closing window 2 was applied as a to-be-locked object, it is applicable not only to the opening / closing window 2 but in the following case.
(A) A swing-up type swing door (unlocked manually or electrically),
(B) a smoke-proof screen and a fire-proof screen (unlocked manually or electrically) for winding and holding the screen for shielding in a roll shape;
(C) Use in smoke-proof wall and hold in closed position (manually or electrically unlocked),
(D) Use in a fire door and keep it open (closed manually or electrically)
(E) Used for self-closing sliding doors and kept open (closed manually or electrically)
(F) A sliding door crescent (manually or electrically unlocked) that can be used as a smoke evacuation device in combination with the opening urging means;
(G) Use the fire damper to keep the opening open (manually or electrically closed).
[0043]
Moreover, in the said Example, although the wire 25 was used as a cable member, what can move the slider part 19, such as not only the wire 25 but a band, a string, a cable, a reinforcing fiber, may be used.
The cam portion 17 for displacing the latch rod 13 is not limited to a substantially semicircular disk shape but can be formed in a desired cam profile such as an elliptical shape or a triangular shape.
The opening / closing window 2 is opened by pulling the handle portions S1 and S2 of the wire 25, but may be performed by pressing the inner wire along the outer wire using the inner wire and the outer wire.
[0044]
Although the lamp 34 is used as a display part for the open display part of the open / close window 2, not only the lamp 34 but also a light emitting diode (LED) may be used, and an acoustic member that sounds a buzzer or plays a melody may be activated.
In the sequential opening mode of the quadruple windows, the open / close windows 2 are sequentially opened with a time difference of about 1 second, but this time difference is not limited to about 1 second, and can be set as desired using a delay circuit or the like.
In the specific implementation of the present invention, the installation location of the lamp 34 is not limited to the vicinity of the opening / closing window 2, the central management room of the disaster prevention facility or the security facility, but may be a monitoring room with a monitor, etc. Various modifications can be made without departing from the scope of the present invention, such as not limited to a continuous window.
[Brief description of the drawings]
1A is a longitudinal sectional view of an opening / closing window when closed, and FIG. 1B is a longitudinal sectional view of the opening / closing window when opened (first embodiment).
FIG. 2 is a top view showing a latch lock.
3A is a longitudinal sectional view taken along line AA in FIG. 2 when the opening / closing window is closed, and FIG. 3B is a longitudinal sectional view taken along line AA in FIG. 2 when the opening / closing window is opened. is there.
4 is a longitudinal sectional view taken along line BB in FIG. 2. FIG.
5A is a cross-sectional view taken along the line CC of FIG. 4 when the open / close window is closed, and FIG. 5B is a cross-sectional view taken along the line CC of FIG. 4 when the open / close window is opened. is there.
FIG. 6 is a front view showing the open / close window as a single window.
FIGS. 7A to 7D are electrical connection diagrams showing opening and closing windows in stages.
8A is a side view showing the lower limit position of the cam portion, and FIG. 8B is a side view showing the upper limit position of the cam portion.
FIG. 9 is a front view showing the open / close window as a quadruple window (second embodiment).
FIG. 10 is an electrical connection diagram for performing a simultaneous opening mode of the opening and closing windows.
FIG. 11 is an electrical connection diagram for performing a sequential opening mode of opening and closing windows (third embodiment).
12A is a side view of an opening / closing window when closed, and FIG. 12B is a side view of the opening / closing window when opened (fourth embodiment).
FIG. 13 is a top view showing a latch lock (fifth embodiment).
FIG. 14 is a top view showing a latch lock (sixth embodiment).
15 is a longitudinal sectional view taken along line EE of FIG.
FIG. 16 is a longitudinal sectional view showing the latch lock when the opening / closing window is closed.
17 is a cross-sectional view taken along line FF of FIG. 16 when the opening / closing window is closed.
FIG. 18 is a top view showing a latch lock (seventh embodiment).
FIG. 19 is an enlarged exploded perspective view of a slider portion, a rack portion, a circular cam, a latch guide, and a latch.
20A is a cross-sectional view showing a latch lock at the time of unlocking, and FIG. 20B is a cross-sectional view showing the latch lock at the time of locking.
[Explanation of symbols]
  2 Opening and closing windows (locked objects)
  4 Stay damper (biasing member)
  7 Latch lock
  9 Latch guide
  9a Ceiling
  10 Drive motor (unlocking means)
  11 Latch
  11a Horizontal piece
  13 Latch cage (unlocking means)
  14  Tongue
  15 Compression coil spring (biasing member)
  16 Rotating shaft (unlocking means)
  17 Cam part (unlocking means)
  18 Latch shaft (unlocking means)
  19 Slider (unlocking means)
  21 Notch cam
  22, 23 Compression coil spring (position biasing member)
  25 Wire (Rope member)
  29, 40 Pin pillar
  31 Main switch
  31A Control unit
  34 Lamp (display)
  43 Rack (unlocking means)
  45 Circular cam (unlocking means)
  46 Pinion (unlocking means)
  Pw power supply
  M1  Microswitch
  a1, b1  Fixed contact
  A1  Movable contact

Claims

A latch which is provided so as to be movable in the direction of separation with respect to the locked object, and is always urged by the urging member in a direction close to the locked object to lock the locked object in a locked position by engagement;
A drive motor having a cam portion slidably contacted with a latch rod formed on the latch, and a rotation shaft;
At the time of automatic operation, when the drive motor is energized, the cam portion is rotated by a predetermined angle while being slidably contacted with the latch rod from the original position where the cam portion is in a predetermined rotation state, and the latch is engaged. Unlocking means for detaching and displacing from the locked position to the unlocked position away from the locked object against the biasing force of the biasing member ;
After unlocking the object to be locked, the cam portion is further rotated by a certain angle in the same direction, and then the drive motor is stopped by de-energization, and the cam portion is returned to the original position, thereby the latch Locking return means for returning to the locked position so as to prepare for engagement with the locked object ,
The unlocking means includes
A latch shaft provided in the latch in a direction perpendicular to the moving direction of the latch with respect to the locked object;
A notch cam portion for engaging the latch shaft; and moving the latch shaft in a direction perpendicular to the moving direction of the latch shaft to disengage the latch shaft from the notch cam portion; A slider part that is displaced to the unlocking position;
A position urging member that urges the slider portion in a direction in which the notch cam portion always engages the latch shaft to hold the latch in the locking position;
A strip member connected to the slider portion and moving the slider portion against a biasing force of the position biasing member during manual operation to displace the latch from the locked position to the unlocked position; Latch lock characterized by.

The locked object is an opening / closing window of a building, and the opening / closing window is opened by displacing the latch from the locking position to the unlocking position when the building is ventilated or smoke is exhausted. The latch lock according to claim 1.

A display unit that operates to display the opening / closing window at a predetermined location when the opening / closing window is opened by displacing the latch from the locking position to the unlocking position during ventilation or smoke emission of the building. The latch lock according to claim 2, further comprising:

When the latch is held in the locked position, the opening / closing window is closed against the biasing force of the biasing member, and when the opening / closing window is opened, the opening / closing window is biased by the biasing member. The latch lock according to claim 2 or 3, wherein the latch lock is released by the above.

The latch lock according to claim 1, wherein the object to be locked is a shielding screen installed in an opening of a building, the shielding screen is held in a rolled-up state, and unlocked by manual operation or electric operation. .