JP4008308B2

JP4008308B2 - Rotary disc tumbler lock with construction key device

Info

Publication number: JP4008308B2
Application number: JP2002235221A
Authority: JP
Inventors: 将明木野瀬
Original assignee: 美和ロック株式会社
Priority date: 2001-10-31
Filing date: 2002-08-12
Publication date: 2007-11-14
Anticipated expiration: 2022-08-12
Also published as: JP2003201782A

Description

【０００１】
【発明の属する技術分野】
この発明は、コンストラクションキー装置付ロータリーディスクタンブラー錠（以下単にコンス錠という）に係り、特に、コンストラクションキー装置を合鍵で解除できるようにしたコンス錠に関する。
【０００２】
【従来の技術】
本出願人は、先に、特願２００１−３１６８８５を以て、従来の所謂レバータンブラー錠（ロータリーディスクシリンダ錠）を改良した新規なロータリーディスクタンブラー錠を提案した。
【０００３】
このロータリーディスクタンブラー錠は、内周面の母線に沿ってカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成した環状のロータリーディスクタンブラーを挿設し、その実体部の１ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたことを特徴とするものである。
【０００４】
上記したロータリーディスクタンブラー錠の構成を更に要約すると、図１に示すように、中央部に鍵孔を包囲し得る大きさの鍵挿通孔１を形成した環状のロータリーディスクタンブラー２を支軸３に揺動可能に軸支すると共に、自由端部外側端縁に解錠切欠４を形成し、一方、鍵挿通孔１の開口端縁に、先端の移動軌跡が鍵孔５に挿入された合鍵６のブレードの平面部又は端縁部と干渉する係合突起７を一体に突設し、各ロータリーディスクタンブラー２をこの係合突起７が合鍵６に近接する方向に付勢すると共に、常態ではバックアップピン８に係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔５に挿通された合鍵６のブレードに形成された対応する窪み９と係合したとき、各ロータリーディスクタンブラーの解錠切欠４をロッキングバー１１の内側縁と整合させるものである。
【０００５】
一方、コンストラクションキー装置とは、工事中はコンストラクションキー（工事専用鍵）という特殊な鍵で各住戸の錠前の施解錠を行い、工事完了後に、コンストラクションキー装置を解除すれば、コンストラクションキーは使用不能となり、以後施主又は入居者が使う合鍵（住戸鍵）だけが使えるようになる装置のことで、工事中における施工者の錠前施解錠作業及び鍵管理業務の合理化を図り、更に施主又は入居者のより一層の安全を確保するために案出されたものである。
【０００６】
尚、ここで合鍵とは、所謂スペアキー（予備の鍵）のことではなく、一の錠前を解錠するための正規の鍵形状を有する鍵をいうものとする。
【０００７】
【発明が解決しようとする課題】
本出願人は、先に、特願平６−１２６９６６号を以て、コンストラクションキー装置を解除するために特殊な工具を必要とせず、住戸鍵で解除できるコンストラクションキー装置付レバータンブラー錠を提案した。
【０００８】
この発明は、上記特願平６−１２６９６６号に係る技術思想を前記特願２００１−３１６８８５に係るロータリーディスクタンブラー錠に適用したコンス錠を提案すると共に、コンストラクションキー装置の機能を更に向上させ、工事中使用する第１コンストラクションキー装置と、工事完成後家主等が使用する管理用の第２コンストラクションキー装置に切換えることができるコンス錠を提供することを目的としている。
【０００９】
【課題を解決するための手段】
上記の目的を達成するため、請求項１に記載の発明は、内周面の母線に沿って横断面形状が略Ｖ字形のカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成し、剛性を高めるため環状に成形したロータリーディスクタンブラーを挿設し、その実体部の１ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、鍵挿通孔を挟んで上記支軸と対峙するロータリーディスクタンブラーの実体部であり、円弧の一部をなす自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにし、以て、合鍵と一体的に内筒を回動させたさせたとき、カム溝とロッキングバーとの間に生じる楔作用によりロッキングバーを内筒中心軸方向に移動させ、内筒を外筒に対し相対回動できるようにしたロータリーディスクタンブラー錠の少なくとも１個のタンブラーを休止タンブラーとして指定し、休止タンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部内側端縁に係止突起を形成して、コンストラクションキー装置作動時、この係止突起をバックアップピンに係合させることにより休止タンブラーを不作動状態に置き、もって休止タンブラーに臨む部分より先のブレードの側端縁を切り欠いて細くし、或いは短くした工事専用のコンストラクションキーの使用を可能にし、一方、コンストラクションキー装置作動時上記休止タンブラーと係合する部分の近傍を切り欠いたバックアップピンを、軸線方向に一定距離移動可能に案内すると共に、上記切欠部分が休止タンブラーと整合する方向に付勢し、他方、コンストラクションキー装置作動時上記バックアップピンと係合してこれをコンストラクションキー装置作動位置に係止する作動板を内筒半径方向に移動可能に設け、この作動板に重合するように配設され、内筒半径方向に移動可能に案内されたリセットタンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部外側縁に、コンストラクションキーが鍵孔に挿入された時ロッキングバーと整合する解錠切欠を形成し、もってコンストラクションキー使用時ロッキングバーのリセットタンブラーの切欠への係入を許して作動板をバックアップピン係止位置に保持し、リセットタンブラーの係合突起に臨むブレード平面部を確保した住戸鍵の操作時、リセットタンブラー及びリセットタンブラーと作動板との係止部を介してロッキングバーにより作動板を動かし、作動板によるバックアップピンの係止を解いてバックアップピンを解放し、もってバックアップピンの切り欠き部分と休止タンブラーとを整合させて、コンストラクションキー装置を解除するようにしたことを特徴とする。
【００１０】
また、請求項２に記載の発明は、内周面の母線に沿って横断面形状が略Ｖ字形のカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成し、剛性を高めるため環状に成形したロータリーディスクタンブラーを挿設し、その実体部の１ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、鍵挿通孔を挟んで上記支軸と対峙するロータリーディスクタンブラーの実体部であり、円弧の一部をなす自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにし、以て、合鍵と一体的に内筒を回動させたさせたとき、カム溝とロッキングバーとの間に生じる楔作用によりロッキングバーを内筒中心軸方向に移動させ、内筒を外筒に対し相対回動できるようにしたロータリーディスクタンブラー錠の少なくとも１個のタンブラーを第１休止タンブラーとして指定し、また、第１休止タンブラーより内方においてこれに隣接する少なくとも１個のタンブラーを第２休止タンブラーとして指定し、これら第１及び第２休止タンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部内側端縁に係止突起を形成して、コンストラクションキー装置作動時、この係止突起をバックアップピンに係合させることにより休止タンブラーを不作動状態に置き、もって休止タンブラーに臨む部分より先のブレードの側端縁を切り欠いて細くし、或いは短くした第１コンストラクションキーの使用を可能にし、一方、コンストラクションキー装置作動時上記休止タンブラーと係合する部分の近傍を切り欠いたバックアップピンを、第１休止タンブラーと係合する第１バックアップピンと、第２休止タンブラーと係合する第２バックアップピンとに分割し、夫々軸線方向に一定距離移動可能に案内すると共に、第１バックアップピンをその切欠部分が休止タンブラーと整合する方向に付勢し、他方、コンストラクションキー装置作動時上記第１バックアップピンと係合してこれをコンストラクションキー装置作動位置に係止する第１作動板と、第２バックアップピンをコンストラクションキー装置作動位置に係止する第２作動板とを、夫々内筒半径方向に移動可能に設け、これらの作動板の夫々に重合するように配設され、内筒半径方向に移動可能に案内された第１及び第２リセットタンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部外側縁に、コンストラクションキーが鍵孔に挿入された時ロッキングバーと整合する解錠切欠を形成し、もって第１コンストラクションキー使用時ロッキングバーのリセットタンブラーの切欠への係入を許して作動板をバックアップピン係止位置に保持し、一方、第１リセットタンブラーの係合突起に臨むブレード平面部を確保すると共に、第２休止タンブラーに臨む部分より先のブレードの側端縁を切り欠いて細くし、或いは短くした第２コンストラクションキーの操作時、第１リセットタンブラー及び第１リセットタンブラーと第１作動板との係止部を介してロッキングバーにより第１作動板を動かし、第１作動板による第１バックアップピンの係止を解いて第１バックアップピンを解放し、以て第１バックアップピンの切り欠き部分と第１休止タンブラーとを整合させて、第２コンストラクションキーの使用を可能にし、また、第２リセットタンブラーの係合突起に臨むブレード平面部を確保した住戸鍵の最初の使用時、第２リセットタンブラー及び第２リセットタンブラーと第２作動板との係止部を介してロッキングバーにより第２作動板を動かし、第２作動板による第２バックアップピンの係止を解くと共に、１バックアップピンを介して第２バックアップピンを解放し、以て第２バックアップピンの切り欠き部分と第２休止タンブラーとを整合させ、以てコンストラクションキー装置を解除するようにしたことを特徴とする。
【００１１】
更にまた、請求項３に記載の発明は、内周面の母線に沿って横断面形状が略Ｖ字形のカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成し、剛性を高めるため環状に成形したロータリーディスクタンブラーを挿設し、その実体部の１ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、鍵挿通孔を挟んで上記支軸と対峙するロータリーディスクタンブラーの実体部であり、円弧の一部をなす自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにし、以て、合鍵と一体的に内筒を回動させたさせたとき、カム溝とロッキングバーとの間に生じる楔作用によりロッキングバーを内筒中心軸方向に移動させ、内筒を外筒に対し相対回動できるようにしたロータリーディスクタンブラー錠の少なくとも１個のタンブラーを第１休止タンブラーとして指定し、また、第１休止タンブラーより内方においてこれに隣接する少なくとも１個のタンブラーを第２休止タンブラーとして指定し、これら第１及び第２休止タンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部内側端縁に係止突起を形成して、コンストラクションキー装置作動時、この係止突起をバックアップピンに係合させることにより休止タンブラーを不作動状態に置き、もって休止タンブラーに臨む部分より先のブレードの側端縁を切り欠いて細くし、或いは短くした第１コンストラクションキーの使用を可能にし、一方、コンストラクションキー装置作動時上記休止タンブラーと係合する部分の近傍を切り欠いたバックアップピンの内筒中心軸線に対向する側に、その長さ方向にそって、第１及び第２の係止切欠を形成し、バックアップピンを内方に移動可能に案内すると共に、内方に付勢し、他方、コンストラクションキー装置作動時上記第１係止切欠と係合してこれをコンストラクションキー装置作動位置に係止する第１作動板と、これら第１係止切欠と第１作動板との係合が解け、バックアップピンが更に内方に移動したとき第２係止切欠と係合する第２作動板とを夫々内筒半径方向に移動可能に設け、これらの作動板の夫々に重合するように配設され、内筒半径方向に移動可能に案内された第１及び第２リセットタンブラーの、鍵挿通孔を挟んで支軸と対峙するロータリーディスクタンブラーの実体部である自由端部外側縁に、コンストラクションキーが鍵孔に挿入された時ロッキングバーと整合する解錠切欠を形成し、もって第１コンストラクションキー使用時ロッキングバーのリセットタンブラーの切欠への係入を許して作動板をバックアップピン係止位置に保持し、一方、第１リセットタンブラーの係合突起に臨むブレード平面部を確保すると共に、第２休止タンブラーに臨む部分より先のブレードの側端縁を切り欠いて細くし、或いは短くした第２コンストラクションキーの操作時、第１リセットタンブラー及び第１リセットタンブラーと第１作動板との係止部を介してロッキングバーにより第１作動板を動かし、第１作動板によるバックアップピンの係止を解いてバックアップピンを解放し、以てバックアップピンの切り欠き部分と第１休止タンブラーとを整合させて、第２コンストラクションキーの使用を可能にし、また、第２リセットタンブラーの係合突起に臨むブレード平面部を確保した住戸鍵の最初の使用時、第２リセットタンブラー及び第２リセットタンブラーと第２作動板との係止部を介してロッキングバーにより第２作動板を動かし、第２作動板によるバックアップピンの係止を解き、以て第２バックアップピンの切り欠き部分と第２休止タンブラーとを整合させ、以てコンストラクションキー装置を解除するようにしたことを特徴とする。
【００１２】
【実施例】
以下、この発明の実施例を図面を参照して説明する。
この発明によるコンス錠は、上記特願２００１−３１６８８５によって提案されたロータリーディスクタンブラー錠に、後述のコンストラクションキー装置を組込んだものである。
【００１３】
しかして、前記して簡単に構成を説明したロータリーディスクタンブラー錠と従来のレバータンブラー錠との大きな違いは、タンブラーの形状が環状であること、及び、ブレードの側端縁の鍵溝の代りに合鍵の平面部及び端縁部に窪みを形成したことの２点であるから、ロータリーディスクタンブラー錠の更に詳細な説明は省略する。
【００１４】
また、説明の都合上、構成がより複雑な請求項２に記載のコンス錠についてのみ実施例を説明する。請求項１に記載のコンス錠の説明は、請求項２についての説明の中に含まれてしまうからである。
【００１５】
図２及び図３において符号１２は回り止めの凸条１３を一体的に結合した外筒であって、この突条１３の内側にはカム溝１４が形成されている。
【００１６】
上記外筒１２の内孔内には、全体を符号１４で示す内筒が回転自在に嵌合している。この内筒１４は、図３に示すように、扉等の外面側に露出するフランジ付盤状のキーガイド１５と、尾栓１６との間に、複数の仕切板１７、１７が間隙を介して内筒軸線方向に積層されて配設されている。図示の実施例では、第１及至第１０仕切板１７−１〜１７−１０が設けられている。
【００１７】
各仕切板１７は、例えば図２に示すように、全体の形状が略円形の板状体であり、図２で左右両側には円弧状の挿入片１７ａ，１７ａが一体に形成され、中央部には図示のように複雑な形状の鍵孔５と、台形と矩形とを組合せた六角形のバックアップピン挿通孔１７ｂとが開口している。
【００１８】
図示の実施例で鍵孔５の横断面形状を図示のように複雑にしたのは、所謂ウォードの種類を多くして鍵違いを多くする目的の他、鍵孔５内におけるピッキング工具の操作を困難にするためである。
【００１９】
また、鍵孔５（合鍵６）の断面形状を内筒１４の中心軸線に関して点対称としたのは、合鍵の裏表に関係無く合鍵を鍵孔５に挿入できる所謂リバーシブルキーにするためである。
【００２０】
また、図２に示すように、鍵孔５に関して支軸３と反対側の外周部は図示のように凸字形に切り欠かれ、ロッキングバー１１を内筒の半径方向に移動可能に案内するための案内溝１７ｃが形成されている。
【００２１】
上記のように構成された例えば１０枚の仕切板１７−１〜１７−１０、後述の作動板、前記キーガイド１５及び尾栓１６は、図２に示すリテーナ１８、１８を介して相互に一体的に結合され、内筒１４を構成している。
【００２２】
上記リテーナ１８は、円筒の一部をその母線に沿って一定の幅で切り欠いた形状の、湾曲した板状体で（図示せず）、その長さ方向に沿って、仕切板１７の挿入片１７ａと嵌合する矩形の開口が列設されており、これら一対のリテーナ１８、１８は、仕切板１７、１７を介して相互に結合されるのだが、その構造は既に周知であるから、更に詳細な説明は省略する。
【００２３】
上記のように構成された内筒１４の一の仕切板１７と、隣接する他の仕切板１７との間に形成されたスロットには、図１及び図２に示すように、中央部に鍵孔５を包囲し得る大きさの鍵挿通孔１を形成した環状のロータリーディスクタンブラー２が挿設されている。
【００２４】
以上述べたのはロータリーディスクタンブラー錠の代表的な構成であり、その作用は前記した通りであるから、更に詳細な説明は省略するが、本発明によるコンス錠は、上記したロータリーディスクタンブラー錠の一部を変更してコンストラクションキー装置を組込んでいる。
【００２５】
すなわち、図３に示すコンス錠においては、複数のロータリーディスクタンブラーの内少なくとも１個のタンブラーを第１休止タンブラー２１として、また、第１休止タンブラー２１より内方においてこれに隣接する少なくとも１個のタンブラーを第２休止タンブラー２２として指定する。
【００２６】
図３に示す実施例においては、鍵孔５の外側の開口から見て４個目のタンブラーが第１休止タンブラー２１として、同じく６個目から１０個目迄の５個のタンブラーが第２休止タンブラー２２−１〜２２−５として指定されている。
【００２７】
なお、内筒１４において外側の３個のタンブラー２、２は工事中用いられるタンブラーを、５個目のタンブラー及び最も奥にあるタンブラーは後述する第１及び第２リセットタンブラーを夫々示す。
【００２８】
上記第１及び第２休止タンブラー２１、２２は、図２に示すように、通常のロータリーディスクタンブラー２と同様の形状であり、その自由端部外側縁には解錠切欠４も形成されている。異なるところは、その自由端部内側縁に係止突起１９が形成されている点のみである。
【００２９】
係止突起１９の形成箇所と解錠切欠４の位置関係は、第１及び第２休止タンブラー２１、２２共、図２に示すように、鍵孔５に合鍵６が挿入されていない常態において、係止突起１９がバックアップピン８に当接してその角度位置に係止されているとき、解錠切欠４がロッキングバー１１に整合するように設定するものとする。
【００３０】
また、図３に示すように、バックアップピンは、第１休止タンブラー２１を制御する第１バックアップピン８１と、第２休止タンブラー２２を制御する第２バックアップピン８２とに分割されている。
【００３１】
これら第１及び第２バックアップピン８１、８２は、夫々軸線方向（長手方向）に一定距離移動可能に案内されていると共に、リセットばね２３の弾力により、第１バックアップピン８１は内方（図３で右方）に付勢されている。
【００３２】
一方、各休止タンブラー２１、２２の近傍における第１又は第２バックアップピン８１（８２）の部分は、休止タンブラー２１、２２に対応して断続的に切り欠かれ、少なくとも休止タンブラー２１、２２と同数の切欠部分８１ａ、８２ａが形成されている。
【００３３】
図３に示す実施例では、第１休止タンブラー２１は１個、第２休止タンブラー２２は５個としたから、第１バックアップピン８１に於ける切欠部分８１ａの数は１、第２バックアップピン８２に於けるそれは５である。
【００３４】
上記第１及び第２バックアップピン８１、８２の各切欠部分８１ａ、８２ａの形成箇所は、そのロッキングバー１１に対向する側面部分で、且つ、対応する休止タンブラー２１、２２より鍵孔５の開口に近い部分である。
【００３５】
また、バックアップピン８１、８２の各切欠部分８１ａ、８２ａのロッキングバー１１から見た切込み深さは、この切欠部分８１ａ、８２ａと休止タンブラー２１、２２とが内筒軸線方向において整合したとき、後者の係止突起１９がこの切欠部分を潜り抜けることができる程度に設定されている。
【００３６】
他方、図３はコンストラクションキー装置が作動している状態を示し、この状態では、切欠部分８１ａ、８２ａが対応する休止タンブラー２１、２２と整合しない位置に第１及び第２バックアップピン８１、８２が係止されている。
【００３７】
上記バックアップピン８１、８２を作動位置に係止し、コンストラクションキー装置を作動させるため、図３で左から４番目の仕切板１７−４が第１バックアップピン８１を作動位置に係止する第１作動板２４として、内筒最奥の第１０仕切板１７−１０が第２バックアップピン８２を作動位置に係止する第２作動板２５として指定されている。
【００３８】
この作動板２４（２５）の形状構造は、図４に示すように、概ね、他の仕切板１７（図２参照）と同様である。異なるところの第一点は、上下方向においてほぼ２等分に分割されていて、その下半分が図４で上下方向、すなわち内筒の半径方向に移動できることである。
【００３９】
また、バックアップピン８１（８２）の挿通孔の両側、及び案内溝１７ｃの両側の計４ヵ所のハッチングを施した部分は、図面手前側に突出してリセット突起１７ｄを構成している。
【００４０】
尚、図示の実施例では、このリセット突起１７ｄ、１７ｄは、図４に示すように、後述のリセットタンブラー２８（２９）を挟むように配設されているが、実際にはリセットタンブラー２８（２９）の自由端部内側端縁に臨むもの（図７で上側のもの）だけあれば作動に支障はない。
【００４１】
また、図４において符号２６で示す富士山形の部分は、作動板２４（２５）の可動の下半分の上端縁においてバックアップピンの挿通孔に隣接して突設された係止部を示し、この係止部２６は、バックアップピン８１（８２）の挿通孔の上方を一部塞ぐ態様で形成されている。
【００４２】
そして、作動板２４（２５）の移動可能な下半分は、図４に示すように、作動板ばね２７、２７（図４参照）の弾力により、上記係止部２６が各バックアップピン８１（８２）の内端部の切欠段部（付番せず）と係合する方向に付勢されている。
【００４３】
一方、これら第１及び第２作動板２４、２５に重合するようにして、図３において第１作動板２４の左側に形成されたスロットには第１リセットタンブラー２８が、第２作動板２５の右側のスロットには第２リセットタンブラー２９が夫々挿設されている。
【００４４】
これらのリセットタンブラー２８、２９は、休止タンブラー２１、２２と同様に、その支軸挿通孔１７ｅが長孔になっていて（図２及び図４参照）、作動板２４、２５と同様に、全体として内筒半径方向に移動できる。
【００４５】
また、例えばタンブラーばね３１の弾力によりその係合突起７が鍵孔１１に近接する方向に付勢されている点、或いは自由端部外側縁に解錠切欠４が形成されている点等は、他のロータリーディスクタンブラー２と同様である。
【００４６】
上記リセットタンブラー２８、２９に於ける解錠切欠４の形成角度位置は、図４に示すように外力が作用しない常態においては、ロッキングバー１１と角度的に整合するように設定されている。
【００４７】
尚、リセットタンブラー２８、２９は、その自由端部が前記作動板２４、２５のリセット突起１７ｄ、１７ｄの間に挟まれた状態でスロット内に組込まれる。
【００４８】
上記のように構成された請求項２に係る発明の一実施例によるコンス錠は、第１及び第２コンストラクションキー装置作動時には、図３及び図４に示すように、リセットばね２３の弾力により内方に付勢された第１バックアップピン８１が、内端の段部を第１作動板２４の係止部２６に弾接させるようにして、コンストラクションキー装置作動位置に係止されている。
【００４９】
また、第２バックアップピン８２は、図３に示すように、内端の付番しない切欠を第２作動板２５の係止部２６と係合させると共に、外端を第１作動板２４の係止部の内面に当接させる態様で、コンストラクションキー装置作動位置に係止されている。
【００５０】
この第１及び第２の双方のコンストラクションキー装置作動時には、図２及び図３に示すように、第１及び第２休止タンブラー２１、２２共、その係止突起１９がバックアップピン８１（８２）と当接し、解錠切欠４がロッキングバー１１の内側縁と整合する角度位置にある。
【００５１】
工事中、図３に示すように、第１リセットタンブラー２８に対応する部分より内方を短くした第１コンストラクションキーＣＫ１を鍵孔に挿入すると、第１コンストラクションキーＣＫ１は第１リセットタンブラー２８に接触せず、したがってリセットタンブラー２８の解錠切欠４（図４参照）はロッキングバー１１と整合した状態を保つ。
【００５２】
この状態は、第２作動板２５（図３及び図４参照）においても同様である。
【００５３】
このとき内筒を回せば、ロッキングバー１１はリセットタンブラーとは干渉せずに内筒半径方向に移動するから、他のロータリーディスクタンブラー２、２も解錠角度位置に置かれることを条件として、このコンス錠は工事期間中第１コンストラクションキーＣＫ１によって施解錠できる。
【００５４】
しかして、図５に示すように、工事完了後最初に第２コンストラクションキーＣＫ２を鍵孔５に挿入すると、図６に示すように、第１リセットタンブラー２８の係合突起７に臨むブレード平面部を確保した第２コンストラクションキーＣＫ２が第１リセットタンブラー２８を時計方向に押動し、その結果、第１リセットタンブラー２８の解錠切欠４がロッキングバー１１と整合しなくなる。
【００５５】
この状態で内筒１４を回動させると、図７に示すように、楔作用により外筒のカム溝３２から外筒１２の内周面に乗り上がるロッキングバー１１が、その過程において、内筒半径方向に移動して第１リセットタンブラー２８の自由端部と干渉し、これをロッキングバー１１の移動方向と同方向に押動する。
【００５６】
このとき、第１リセットタンブラー２８と第１作動板２４とは、後者に形成された突起１７ｄを介して一体的に結合されているから、両者は内筒の半径方向、すなわち図７で上方に移動し、その結果第１作動板２４と第１バックアップピン８１との係合が解かれ、後者は前者から解放される。
【００５７】
すると、第１バックアップピン８１はリセットばね２３（図３参照）の弾力によりその切欠部分８１ａが対応する第１休止タンブラ２１と整合する方向に移動し、このようにして第１コンストラクションキー装置が解除される。
【００５８】
第１コンストラクションキー装置の解除状態では、図５に示すように、第１バックアップピン８１の内端が第２バックアップピン８２の外端に当接してこれに係止され、このようにして第１バックアップピン８１の内筒軸線方向の延在位置が規定される。
【００５９】
第２バックアップピン８２は、図５に示すように、その内端に形成された付番しない切欠を第２作動板２５の係止部２６と係合させた状態にあり、第１バックアップピン８１が弾接してもその軸線方向の位置は変らない。この状態が第２コンストラクションキー装置が作動している状態である。
【００６０】
尚、図示の実施例では、第１リセットタンブラー２８の動きを第１作動板２４に伝達するため、第１作動板２４に突起を形成し、これを第１リセットタンブラー２８に係合させるようにしたが、これは、例えば第１リセットタンブラー２８の第１作動板側の面に係合ピンを突設し、これを第１作動板２４に形成した長穴に係合させるようにしてもよい（図示せず）。この場合、長穴の形状は、第１コンストラクションキーＣＫ１による第１リセットタンブラー２８の回動に伴い円弧となる。
【００６１】
上記した第１コンストラクションキー装置解除時（第２コンストラクションキー装置作動時）には、図８に示すように、第１休止タンブラー２１（図示の実施例では１個）の係止突起１９が第１バックアップピン８１の切欠部分８１ａを潜り抜けるので、第１休止タンブラー２１はその付勢力により所定の角度回動する。
【００６２】
そして、その解錠切欠４がロッキングバー１１と角度的に整合しなくなるので、この第１休止タンブラー２１がロータリーディスクタンブラー２として機能し始める。
【００６３】
そのため、この第１休止タンブラー２１の係合突起７に臨む部分に適切な深さの窪み９（図１参照）を形成した第２コンストラクションキーＣＫ２のみが使用可能になり、それまで（すなわち工事中）使用していた第１コンストラクションキーＣＫ１は無効となる。
【００６４】
上記第２コンストラクションキーＣＫ２は、例えば完成した建物が販売されるまで、不動産会社が建物管理のために使用する。
【００６５】
ところで、その建物が売れると、不動産会社は居住者に建物を引き渡す際合鍵（住戸鍵：図示せず）をも引き渡す。この合鍵は、内筒の奥の５枚の第２休止タンブラー２２−１〜２２−５（図３参照）に対応する窪みを正規に形成すると共に、最奥の第２リセットタンブラー２９の係合突起７に臨むブレード平面部を確保できる程度に長くしたものである。
【００６６】
そして居住者がこの合鍵を鍵孔に最初に挿入すると、このときには第２コンストラクションキー装置が作動中であるから、当然解錠されるのだが、同時に、前記したように、また、図６及び図７に示すように、第２リセットタンブラー２９が第２バックアップピン２９を解放する。
【００６７】
すると、図９に示すように、リセットばね２３の弾力を第１バックアップピン８１を介して受けている第２バックアップピン８２は、第１バックアップピン８１によって内方に押動され、図９に示す所定の位置に迄押込まれる。
【００６８】
すると、第２バックアップピン８２の切欠部分８２ａ、８２ａが夫々対応する第２休止タンブラ２２と整合する方向に移動し、このようにして第２コンストラクションキー装置も解除される。
【００６９】
この第２コンストラクションキー装置の解除時、第１バックアップピン８１も第２バックアップピン８２と一体的に更に内筒の奥に移動するが、第１バックアップピン８１の切欠部分８１ａは少し長くなっているので（図３参照）、第１休止タンブラー２１が切欠部分８１ａから外れてしまうことはない。
【００７０】
上記のようにして第２コンストラクションキー装置が解除されると、それまで不動産会社が使用していた第２コンストラクションキーＣＫ２は無効となり、以後合鍵のみが使用可能となる。
【００７１】
図１０乃至図１９はこの請求項３に記載の発明の実施例を示し、この実施例においても、コンストラクションキー装置作動時、図１０に示すように、休止タンブラー２１、２２の係止突起１９はバックアップピン８に係止され、その解錠切欠４が常時ロッキングバー１１と整合する不作動角度位置にある。
【００７２】
しかしながら、コンストラクションキー装置装置が解除されると、図１１に示すように、休止タンブラーがバックアップピンの切欠８ａ（図１２参照）と整合し、上記係止突起１８がこの切欠８ａに係入する結果、解錠切欠４がロッキングバー１１と整合しなくなり、タンブラーとして作動し始めることは上記した実施例と同様である。
【００７３】
なお、図１１及び図１２で係合突起７が２重線で表わされているのは、この部分に例えばプレス加工により傾斜をつけ、合鍵との係合時作動を円滑にするためである（図１３参照）。
【００７４】
また、タンブラーばね３１はロータリーディスクタンブラーの作動の確実性を向上させるため捩りコイルばねとなっており、これに対応して、支軸３に関し内筒中心軸とは反対側にばね軸３３が付設され、これにタンブラーばね３１が巻装されている（図１０参照）。
【００７５】
一方、図１２に示すように、請求項３に記載の発明におけるバックアップピン８は前記したように分割されておらず、単一の杆体である。
【００７６】
そして、このバックアップピン８の内筒中心軸線に対向する側に、その長さ方向に沿って、第１及び第２係止切欠３４、３５、その反対側に切欠８ａ、８ａが夫々形成されている。
【００７７】
一方、請求項３に記載の発明においては、図１３に示す合計１１枚のロータリーディスクタンブラーの内キーガイド１５に近い３枚は、コンストラクションキー装置作動時、及び解除時に渡って常時使用されるロータリーディスクタンブラーを示す。
【００７８】
そして、以下図３と同様にして、１時休止タンブラー２１、第１リセットタンブラー２８、第１乃至第５の２次休止タンブラー２２−１〜２２−５及び第２リセットタンブラー２９となっている。
【００７９】
前記請求項２に記載の発明によるコンストラクションキー装置付ロータリーディスクタンブラー錠と請求項３に記載の発明によるそれとの違いは、前者が１次及び２次休止タンブラー２１、２２を２本に分割されて長さ方向に連設された第１及び第２バックアップピン８１、８２の夫々に係止するようにし、これらのバックアップピンの間に間隙を設け、第１バックアップピン８にが内方に移動して１次休止タンブラーを解放するときには第２バックアップピンを動かさないようにしている。
【００８０】
これに対し、後者、すなわち請求項３に記載の発明によるコンストラクションキー装置付ロータリーディスクタンブラー錠においては、図１３に示すように、第１コンストラクションキーＣＫ１使用時、第１係止切欠３４（図１２参照）と第１作動板２４とを係合させ、バックアップピン８を図１３に示す作動位置に保つとき、第２係止切欠３５の左方の段部と第２作動板２５との間に間隙を保たせる。
【００８１】
前記したように、また後にもう１回述べるように、第２コンストラクションキーＣＫ２を鍵孔に挿入して、第１リセットタンブラー２８により作動板２６の係止部２６を内筒中心軸線方向に動かして係止部２６と第１係止切欠３４との係合を解くとき、図１４に示すように、バックアップピン８はリセットばね２３の弾力により右方に移動して、切欠８ａ（図１２参照）と１次休止タンブラー２１とを内筒軸線方向において整合させる。
【００８２】
同時に、第２係止切欠３５の左方の段部が第２作動板２５の係止部２６に衝止され、バックアップピン８が図１４に示す位置に保たれると共に、第２コンストラクションキーＣＫ２の使用が可能となる。
【００８３】
そして、不動産会社から住戸鍵ＨＫを手渡された居住者が最初に住戸鍵ＨＫを挿入すると、前記したと同様にして第２作動板２５がバックアップピン８を解放し、バックアップピン８は図１５に示すように更に右方に移動して、全ロータリーディスクタンブラーがタンブラーとして作動するに致る。
【００８４】
図１６は第１（第２）作動板２４（２５）を内方（図１３で右方）から見た図で、作動板は上下２枚に別れ、上方の作動板は固定されているが、下方のものは上下方向に移動可能に案内されると共に、下方に付勢されていることは前記した第４図示のものと同様である。
【００８５】
また、下方の作動板に開口したバックアップピン挿通孔１７ｂ（図１７参照）の上方に係止部２６が形成されていて、バックアップピン８はその係止切欠３４（３５）の図１７で手前側の段部をこの係止部２６と係合させることにより作動板に係止される。
【００８６】
しかして、リセットタンブラー２８（２９）の係合突起７が鍵の平面部に当接すると、図１７に示すように、リセットタンブラーの解錠切欠４がロッキングバー１１から外れ、この状態で合鍵を介して内筒を回動させると、リセットタンブラー２８（２９）が作動板のリセット突起１７ｄを介して作動板の下半分を内筒中心軸線に近接させるように押動し、この結果バックアップピン８は係止部２６から解放されて紙面方向に移動し、図１９に示すように、係止部２６の下方に潜り込むようにして新しい位置に落ち着く。
【００８７】
【発明の効果】
以上の説明から明らかなように、請求項１に記載された発明は、選択された少なくとも１個のタンブラーを休止タンブラーとして指定し、これら休止タンブラーに係止突起を形成して、コンストラクション装置作動時、この係止突起をバックアップピンに係合させて休止タンブラーを不作動状態に置き、もってこの休止タンブラーに臨む部分を細くし或いは短くしたコンストラクションキーを使用可能とし、一方、工事完了後最初の合鍵の使用により、バックアップピンを内筒軸線方向に移動させ、休止タンブラーをバックアップピンの切り欠き部分を潜らせて自由にし、もってコンストラクション装置を専門の工具や技術無しに解除できるようにしたので、コンストラクション装置の解錠作業を格段に合理化することができる。
【００８８】
又、同じ理由により、合鍵を取り扱う者の数を最小にすることができ、錠前の安全性をより一層高めることができる。
【００８９】
更に又、原理上、コンストラクションキーの形状を合鍵のそれとは全く異なったものにすることができるので、コンストラクションキーから合鍵を複製される恐れが全く無い。
【００９０】
加えて、請求項２及び請求項３に記載の発明によれば、コンストラクションキー装置を２段階に切換えることができ、錠前の安全性を更に向上させることができると共に、工事及び建物の管理を更に容易にすることができる、等種々の効果を奏する。
【図面の簡単な説明】
【図１】本出願人が先に提案したロータリーディスクタンブラー錠の拡大横断面図。
【図２】請求項２に記載の発明の一実施例によるコンス錠の拡大横断面図で、コンストラクションキー装置が作動している場合を示す。
【図３】請求項２に記載の発明の一実施例によるコンス錠の拡大縦断面図で、第１及び第２コンストラクションキー装置が作動している場合を示す。
【図４】図３に示すコンス錠の作動板及びリリースタンブラー部分の横断面図で、コンストラクションキー装置が作動している場合を示す。
【図５】図３と同様のコンス錠の縦断面図で、第１コンストラクションキー装置が解除された状態を示す。
【図６】図４と同様のコンス錠の作動板及びリリースタンブラー部分の横断面図で、鍵孔に第２コンストラクションキー又は合鍵が挿入された状態を示す。
【図７】図４と同様のコンス錠の作動板及びリリースタンブラー部分の横断面図で、鍵孔に第２コンストラクションキー又は合鍵を挿入して解錠し、内筒を少し回動させた状態を示す。
【図８】図２と同様のコンス錠の拡大横断面図で、コンストラクションキー装置が解除された状態を示す。
【図９】図３と同様のコンス錠の縦断面図で、第１及び第２コンストラクションキー装置が解除された状態を示す。
【図１０】請求項３に記載の発明の一実施例によるコンス錠の拡大横断面図で、コンストラクションキー装置が作動している場合を示す。
【図１１】請求項３に記載の発明の一実施例によるコンス錠の拡大横断面図で、コンストラクションキー装置が解除された場合を示す。
【図１２】請求項３に記載の発明の一実施例によるコンス錠のバックアップピンの側面図。
【図１３】請求項３に記載の発明の一実施例によるコンス錠の拡大縦断面図で、第１及び第２コンストラクションキー装置が作動している場合を示す。
【図１４】請求項３に記載の発明の一実施例によるコンス錠の拡大縦断面図で、第２コンストラクションキー装置が作動している場合を示す。
【図１５】請求項３に記載の発明の一実施例によるコンス錠の拡大縦断面図で、コンストラクションキー装置が解除された場合を示す。
【図１６】請求項３に記載の発明によるコンス錠の作動板及びリリースタンブラー部分の横断面図で、コンストラクションキー装置が作動している場合を示す。
【図１７】図１６と同様のコンス錠の作動板及びリリースタンブラー部分の横断面図で、鍵孔に第２コンストラクションキー又は合鍵が挿入された状態を示す。
【図１８】図１６と同様のコンス錠の作動板及びリリースタンブラー部分の横断面図で、鍵孔に第２コンストラクションキー又は合鍵を挿入して解錠し、内筒を少し回動させた状態を示す。
【図１９】図１６と同様のコンス錠の拡大横断面図で、コンストラクションキー装置が解除された状態を示す。
【符号の説明】
１鍵挿通孔
２ロータリーディスクタンブラー
３支軸
４解錠切欠
５鍵孔
６合鍵
７係合突起
８バックアップピン
９窪み
１１ロッキングバー
１２外筒
１３凸条
１４内筒
１５キーガイド
１６尾栓
１７仕切板
１８リテーナ
１９係止突起
２１第１休止タンブラー
２２第２休止タンブラー
２３リセットばね
２４第１作動板
２５第２作動板
２６係止部
２７作動板ばね
２８第１リセットタンブラー
２９第２リセットタンブラー
３１タンブラーばね
３２カム溝
３３ばね軸
３４第１係止切欠
３５第２係止切欠
８１第１バックアップピン
８２第２バックアップピン[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary disc tumbler lock with a construction key device (hereinafter simply referred to as a “cons lock”), and more particularly to a construction lock that allows a construction key device to be released with a combined key.
[0002]
[Prior art]
The present applicant has previously proposed a novel rotary disk tumbler lock improved from the so-called lever tumbler lock (rotary disk cylinder lock) according to Japanese Patent Application No. 2001-316885.
[0003]
The rotary disk tumbler lock includes an outer cylinder having a cam groove formed along a generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap. An inner cylinder having a key hole extending along the central axis, and extending along a generatrix of the inner cylinder, and guided in a radially movable manner on the outer periphery of the inner cylinder, and the cam A locking bar biased in a direction in which an outer edge engaged with the groove protrudes outward, and a key insertion hole of a size capable of enclosing the key hole in a central portion in each slot between the partition plates Insert the formed annular rotary disk tumbler and pivotally support one part of its substantial part on a support shaft that penetrates the inner cylinder in the axial direction and unlocks the notch on the outer edge of the free end. On the other hand, the movement trajectory of the tip is at the opening edge of the key insertion hole. Engagement protrusions that interfere with the flat part or edge part of the keyed blade inserted into the hole are integrally projected, and each rotary disk tumbler is urged in the direction in which the engagement protrusions are close to the keyed key, and in a normal state. Then, when the inner cylinder is locked to the backup pin penetrating in the axial direction, on the other hand, when each of the engaging projections of these tumbler groups is engaged with the corresponding recess formed in the keyed blade inserted through the key hole. The unlocking notch of each rotary disk tumbler is aligned with the inner edge of the locking bar.
[0004]
To further summarize the structure of the rotary disk tumbler lock described above, as shown in FIG. 1, an annular rotary disk tumbler 2 having a key insertion hole 1 of a size capable of enclosing the key hole at the center is provided on the support shaft 3. The unlocking notch 4 is formed on the outer end edge of the free end portion while being pivotably supported, and on the other hand, a joint key 6 in which the movement locus of the tip is inserted into the key hole 5 at the opening edge of the key insertion hole 1. Engaging projections 7 that interfere with the flat portion or the edge of the blade of the blade are integrally projected, and each rotary disk tumbler 2 is urged in the direction in which the engaging projections 7 approach the joint key 6 and is normally backed up. When each of the engaging protrusions of the tumbler group is engaged with the corresponding recess 9 formed in the blade of the key 6 inserted through the key hole 5, each of the rotary disk tumblers is locked. Unlock notch 4 It is intended to match with the inner edge of the king bar 11.
[0005]
On the other hand, the construction key device is a special key called a construction key (construction key) that is used to lock and unlock each dwelling unit during construction, and if the construction key device is released after the construction is complete, the construction key cannot be used. After that, it is a device that allows only the key used by the owner or resident (dwelling unit key) to be used, and to streamline the lock and unlocking work and key management work of the contractor during the construction. It was devised to ensure further safety.
[0006]
Here, the combined key is not a so-called spare key (reserve key) but a key having a regular key shape for unlocking one lock.
[0007]
[Problems to be solved by the invention]
The present applicant has previously proposed a lever tumbler lock with a construction key device that can be released with a dwelling unit key without requiring a special tool to release the construction key device with Japanese Patent Application No. 6-126966.
[0008]
The present invention proposes a cons lock in which the technical idea of the above-mentioned Japanese Patent Application No. 6-126966 is applied to the rotary disc tumbler lock according to the above-mentioned Japanese Patent Application No. 2001-316985, and further improves the function of the construction key device. It is an object of the present invention to provide a cons lock that can be switched to a first construction key device for use inside and a second construction key device for management used by a landlord or the like after completion of construction.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. The unlocking notch is formed on the outer edge of the free end that forms part of the arc, while the flat part of the blade of the key is inserted at the opening edge of the key insertion hole and the movement locus of the tip is inserted into the key hole. Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to And to allow relative rotation with respect to the cylinder At least one tumbler of the rotary disk tumbler lock is designated as a pause tumbler, and a locking protrusion is formed on the inner edge of the free end that is the substantial part of the rotary disk tumbler that faces the support shaft across the key insertion hole of the pause tumbler When the construction key device is activated, the resting tumbler is placed in the inoperative state by engaging the locking projection with the backup pin, and the side edge of the blade ahead of the portion facing the resting tumbler is cut away. It is possible to use a construction key that is thin or shortened for construction, while the construction key device is activated, the backup pin cut out in the vicinity of the part that engages with the pause tumbler can be moved a certain distance in the axial direction When the above-mentioned notch is aligned with the pause tumbler On the other hand, when the construction key device is activated, an operating plate that engages with the backup pin and locks it to the construction key device operating position is provided so as to be movable in the radial direction of the inner cylinder, and is superposed on the operating plate. The construction key is placed on the outer edge of the free end, which is the substantial part of the rotary disk tumbler that faces the spindle with the key insertion hole in between. Forms an unlocking notch that aligns with the locking bar when inserted into the hole, so that when the construction key is used, the locking bar is allowed to engage the reset tumbler notch and the operating plate is held in the back-up pin locking position to reset When operating a dwelling unit key that secures the blade flat part facing the engagement protrusion of the tumbler, the reset tumbler and reset The operating plate is moved by the locking bar through the locking part between the tombar and the operating plate, the backup pin is unlocked by the operating plate and the backup pin is released, so that the notch portion of the backup pin and the pause tumbler are The construction key device is released by matching.
[0010]
The invention according to claim 2 An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. The unlocking notch is formed on the outer edge of the free end that forms part of the arc, while the flat part of the blade of the key is inserted at the opening edge of the key insertion hole and the movement locus of the tip is inserted into the key hole. Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to And to allow relative rotation with respect to the cylinder At least one tumbler of the rotary disc tumbler tablet is designated as a first pause tumbler, and at least one tumbler adjacent to it inward of the first pause tumbler is designated as a second pause tumbler, In addition, a locking projection is formed on the inner edge of the free end that is the substantial part of the rotary disk tumbler that faces the support shaft across the key insertion hole of the second pause tumbler, and this locking is performed when the construction key device is operated. By using the first construction key, the rest tumbler is put into an inoperative state by engaging the protrusion with the backup pin, and the side edge of the blade ahead of the part facing the rest tumbler is cut out to be thin or shortened. On the other hand, when the construction key device is activated, it engages with the above-mentioned pause tumbler The backup pin that is cut out in the vicinity of the first part is divided into a first backup pin that engages with the first resting tumbler and a second backup pin that engages with the second resting tumbler, and can be moved by a certain distance in the axial direction. In addition to guiding, the first backup pin is urged in the direction in which the notch portion is aligned with the resting tumbler. On the other hand, when the construction key device is activated, the first backup pin is engaged and locked in the construction key device operating position. A first actuating plate and a second actuating plate for locking the second backup pin at the construction key device actuating position are provided so as to be movable in the radial direction of the inner cylinder, respectively, and are superposed on each of these actuating plates. The first and second reset tumblers that are arranged and guided so as to be movable in the radial direction of the inner cylinder sandwich the key insertion hole. An unlocking notch that aligns with the locking bar when the construction key is inserted into the key hole is formed on the outer edge of the free end, which is the substantial part of the opposing rotary disc tumbler, so that the locking bar is reset when the first construction key is used. The operation plate is held at the backup pin locking position by allowing the tumbler to be inserted into the notch, while the blade flat portion facing the engaging protrusion of the first reset tumbler is secured and the portion facing the second resting tumbler is secured. When operating the second construction key, which is made by cutting away or shortening the side edge of the previous blade, the first reset tumbler and the locking portion between the first reset tumbler and the first operating plate are used by a locking bar. The first operation plate is moved, and the first backup pin is unlocked by the first operation plate to release the first back plate. The blade plane that releases the top pin and thereby aligns the cut-out portion of the first backup pin with the first resting tumbler to allow the use of the second construction key and faces the engaging protrusion of the second reset tumbler At the first use of the dwelling unit key that secures the part, the second operating plate is moved by the locking bar via the second reset tumbler and the engaging part of the second reset tumbler and the second operating plate. 2 Unlock the backup pin and release the second backup pin via the 1 backup pin, thereby aligning the notch portion of the second backup pin with the second pause tumbler, and the construction key device It is characterized by being released.
[0011]
Furthermore, the invention according to claim 3 An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. The unlocking notch is formed on the outer edge of the free end that forms part of the arc, while the flat part of the blade of the key is inserted at the opening edge of the key insertion hole and the movement locus of the tip is inserted into the key hole. Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to And to allow relative rotation with respect to the cylinder At least one tumbler of the rotary disc tumbler tablet is designated as a first pause tumbler, and at least one tumbler adjacent to it inward of the first pause tumbler is designated as a second pause tumbler, In addition, a locking projection is formed on the inner edge of the free end that is the substantial part of the rotary disk tumbler that faces the support shaft across the key insertion hole of the second pause tumbler, and this locking is performed when the construction key device is operated. By using the first construction key, the rest tumbler is put into an inoperative state by engaging the protrusion with the backup pin, and the side edge of the blade ahead of the part facing the rest tumbler is cut out to be thin or shortened. On the other hand, when the construction key device is activated, it engages with the above-mentioned pause tumbler The backup pin can be moved inward by forming first and second locking cutouts along the length direction on the side of the backup pin that is notched in the vicinity of the center portion of the backup pin. And a first operating plate that engages with the first locking notch when the construction key device is activated and locks it in the construction key device operating position. When the engagement between the locking notch and the first operation plate is released and the backup pin further moves inward, a second operation plate that engages with the second locking notch is provided to be movable in the inner cylinder radial direction. The rotary disc tumbler which is arranged so as to overlap with each of these operation plates and is opposed to the support shaft with the key insertion hole between the first and second reset tumblers guided so as to be movable in the radial direction of the inner cylinder The free end that is the real part of On the outer edge, an unlocking notch is formed that aligns with the locking bar when the construction key is inserted into the keyhole, so that when the first construction key is used, the locking plate is allowed to enter the notch of the reset tumbler. While maintaining the backup pin locking position, the blade flat portion facing the engaging protrusion of the first reset tumbler is secured, and the side edge of the blade ahead of the portion facing the second resting tumbler is cut out and thinned. Alternatively, when the shortened second construction key is operated, the first operating plate is moved by the locking bar via the first reset tumbler and the engaging portion between the first reset tumbler and the first operating plate, and is backed up by the first operating plate. Unlock the pin and release the backup pin, so the notch of the backup pin and the first rest button The second construction key can be used by aligning with the blur, and the second reset tumbler and the second second key can be used during the first use of the dwelling key with the blade flat portion facing the engaging projection of the second reset tumbler. The second actuating plate is moved by the locking bar via the engaging part between the reset tumbler and the second actuating plate, the backup pin is unlocked by the second actuating plate, and the notch portion of the second backup pin is It is characterized in that the construction key device is released by aligning the two pause tumblers.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
The cons lock according to the present invention is a rotary disk tumbler lock proposed by the Japanese Patent Application No. 2001-316885 and a construction key device described later.
[0013]
Thus, the major difference between the rotary disk tumbler lock and the conventional lever tumbler lock, whose configuration has been briefly described above, is that the shape of the tumbler is annular, and instead of the keyway on the side edge of the blade. Since it is two points that the depression is formed in the flat portion and the edge portion of the key, further detailed description of the rotary disc tumbler lock is omitted.
[0014]
For convenience of explanation, only the cons lock according to claim 2 having a more complicated configuration will be described. This is because the explanation of the cons lock according to claim 1 is included in the explanation of claim 2.
[0015]
In FIGS. 2 and 3, reference numeral 12 denotes an outer cylinder in which a non-rotating protrusion 13 is integrally coupled, and a cam groove 14 is formed inside the protrusion 13.
[0016]
In the inner hole of the outer cylinder 12, an inner cylinder denoted as a whole by 14 is rotatably fitted. As shown in FIG. 3, the inner cylinder 14 has a plurality of partition plates 17, 17 interposed between a tail plug 16 and a flanged disk-shaped key guide 15 exposed on the outer surface side of a door or the like. Are stacked in the inner cylinder axis direction. In the illustrated embodiment, first to tenth partition plates 17-1 to 17-10 are provided.
[0017]
For example, as shown in FIG. 2, each partition plate 17 is a plate-like body having a substantially circular shape. Arc-shaped insertion pieces 17a and 17a are integrally formed on the left and right sides in FIG. As shown in the figure, a key hole 5 having a complicated shape and a hexagonal backup pin insertion hole 17b in which a trapezoid and a rectangle are combined are opened.
[0018]
The reason why the cross-sectional shape of the keyhole 5 is complicated as shown in the illustrated embodiment is to increase the number of so-called wards and increase the key difference, as well as to operate the picking tool in the keyhole 5. This is to make it difficult.
[0019]
The reason why the cross-sectional shape of the key hole 5 (joint key 6) is point-symmetric with respect to the central axis of the inner cylinder 14 is to make a so-called reversible key that can be inserted into the key hole 5 regardless of the front and back of the key.
[0020]
Further, as shown in FIG. 2, the outer peripheral portion of the key hole 5 opposite to the support shaft 3 is notched in a convex shape as shown in the figure, so that the locking bar 11 is guided so as to be movable in the radial direction of the inner cylinder. The guide groove 17c is formed.
[0021]
For example, ten partition plates 17-1 to 17-10 configured as described above, an operation plate described later, the key guide 15 and the tail plug 16 are integrated with each other via retainers 18 and 18 shown in FIG. The inner cylinder 14 is configured.
[0022]
The retainer 18 is a curved plate-like body (not shown) in which a part of a cylinder is cut out with a certain width along its generatrix, and the partition plate 17 is inserted along its length direction. Rectangular openings for fitting with the pieces 17a are arranged in a row, and the pair of retainers 18 and 18 are connected to each other via the partition plates 17 and 17, but the structure is already well known. Further detailed description is omitted.
[0023]
A slot formed between one partition plate 17 of the inner cylinder 14 configured as described above and another partition plate 17 adjacent thereto has a key in the center as shown in FIGS. An annular rotary disk tumbler 2 having a key insertion hole 1 having a size capable of surrounding the hole 5 is inserted.
[0024]
What has been described above is a typical configuration of a rotary disc tumbler tablet, and its operation is as described above. Therefore, a more detailed description is omitted, but the cons lock according to the present invention is the above-described rotary disc tumbler tablet. A construction key device has been incorporated with some changes.
[0025]
That is, in the cons lock shown in FIG. 3, at least one tumbler of the plurality of rotary disc tumblers is used as the first rest tumbler 21, and at least one adjacent to the inner side of the first rest tumbler 21. The tumbler is designated as the second pause tumbler 22.
[0026]
In the embodiment shown in FIG. 3, the fourth tumbler viewed from the opening outside the keyhole 5 is the first pause tumbler 21, and the fifth tumbler from the sixth to the tenth is the second pause tumbler. Designated as tumblers 22-1 to 22-5.
[0027]
In the inner cylinder 14, the outer three tumblers 2 and 2 are tumblers used during construction, and the fifth and innermost tumblers are first and second reset tumblers described later, respectively.
[0028]
As shown in FIG. 2, the first and second pause tumblers 21 and 22 have the same shape as that of a normal rotary disk tumbler 2, and an unlocking notch 4 is also formed on the outer edge of the free end. . The only difference is that a locking projection 19 is formed on the inner edge of the free end.
[0029]
The positional relationship between the location where the locking projection 19 is formed and the unlocking notch 4 is the same as the first and second rest tumblers 21 and 22, as shown in FIG. It is assumed that the unlocking notch 4 is set so as to align with the locking bar 11 when the locking projection 19 abuts on the backup pin 8 and is locked at the angular position.
[0030]
As shown in FIG. 3, the backup pin is divided into a first backup pin 81 that controls the first pause tumbler 21 and a second backup pin 82 that controls the second pause tumbler 22.
[0031]
The first and second backup pins 81 and 82 are guided so as to be movable by a predetermined distance in the axial direction (longitudinal direction), respectively, and the first backup pin 81 is inward (FIG. 3) by the elasticity of the reset spring 23. And to the right).
[0032]
On the other hand, the portion of the first or second backup pin 81 (82) in the vicinity of each pause tumbler 21, 22 is intermittently cut out corresponding to the pause tumblers 21, 22, and at least the same number as the pause tumblers 21, 22. The notches 81a and 82a are formed.
[0033]
In the embodiment shown in FIG. 3, since the number of the first pause tumblers 21 is one and the number of the second pause tumblers 22 is five, the number of the notch portions 81a in the first backup pin 81 is one, and the second backup pin 82 It is 5 in
[0034]
The cutout portions 81a and 82a of the first and second backup pins 81 and 82 are formed on the side surface facing the locking bar 11, and from the corresponding pause tumblers 21 and 22 to the opening of the keyhole 5. It is a close part.
[0035]
Further, the depth of cut as viewed from the locking bar 11 of each notch portion 81a, 82a of the backup pin 81, 82 is such that the notch portion 81a, 82a and the rest tumblers 21, 22 are aligned in the inner cylinder axis direction. The locking projection 19 is set to such an extent that it can penetrate through the notch.
[0036]
On the other hand, FIG. 3 shows a state in which the construction key device is operating. In this state, the first and second backup pins 81 and 82 are located at positions where the cutout portions 81a and 82a are not aligned with the corresponding pause tumblers 21 and 22. It is locked.
[0037]
In order to lock the backup pins 81 and 82 in the operating position and operate the construction key device, the first partition plate 17-4 from the left in FIG. 3 locks the first backup pin 81 in the operating position. As the operation plate 24, the innermost tenth partition plate 17-10 is designated as the second operation plate 25 that locks the second backup pin 82 in the operation position.
[0038]
The shape structure of the operation plate 24 (25) is generally the same as that of the other partition plate 17 (see FIG. 2), as shown in FIG. The first difference is that it is divided into almost equal halves in the vertical direction, and its lower half can be moved in the vertical direction in FIG. 4, that is, in the radial direction of the inner cylinder.
[0039]
In addition, the hatched portions in total of four locations on both sides of the insertion hole of the backup pin 81 (82) and on both sides of the guide groove 17c project to the front side of the drawing to constitute a reset projection 17d.
[0040]
In the illustrated embodiment, the reset protrusions 17d and 17d are disposed so as to sandwich a reset tumbler 28 (29), which will be described later, as shown in FIG. If there is only one that faces the inner edge of the free end portion (upper side in FIG. 7), there is no problem in operation.
[0041]
In addition, the Mt. Fuji-shaped portion indicated by reference numeral 26 in FIG. 4 indicates a locking portion protruding adjacent to the insertion hole of the backup pin at the upper end edge of the movable lower half of the operating plate 24 (25). The locking part 26 is formed in such a manner as to partially block the upper part of the insertion hole of the backup pin 81 (82).
[0042]
As shown in FIG. 4, the lower half of the movable plate 24 (25) is moved by the elastic force of the operating plate springs 27 and 27 (see FIG. 4). ) Is biased in a direction to engage with a notch step portion (not numbered) of the inner end portion.
[0043]
On the other hand, the first reset tumbler 28 is attached to the slot formed on the left side of the first operation plate 24 in FIG. 3 so as to overlap with the first and second operation plates 24 and 25. A second reset tumbler 29 is inserted in each slot on the right side.
[0044]
These reset tumblers 28 and 29, like the suspension tumblers 21 and 22, have a long shaft insertion hole 17e (see FIGS. 2 and 4). Can be moved in the radial direction of the inner cylinder.
[0045]
Further, for example, the point that the engaging projection 7 is urged in the direction approaching the key hole 11 by the elasticity of the tumbler spring 31, or the unlocking notch 4 is formed on the outer edge of the free end, etc. The same as other rotary disc tumblers 2.
[0046]
The formation angle position of the unlocking notch 4 in the reset tumblers 28 and 29 is set so as to be angularly aligned with the locking bar 11 in a normal state where no external force acts as shown in FIG.
[0047]
The reset tumblers 28 and 29 are assembled into the slots with their free ends sandwiched between the reset protrusions 17d and 17d of the operating plates 24 and 25.
[0048]
When the first and second construction key devices are operated, the lock lock according to an embodiment of the invention according to claim 2 configured as described above is formed by the elastic force of the reset spring 23 as shown in FIGS. The first backup pin 81 urged in the direction is locked at the construction key device operating position so that the stepped portion at the inner end is brought into elastic contact with the locking portion 26 of the first operating plate 24.
[0049]
Further, as shown in FIG. 3, the second backup pin 82 engages a notch that is not numbered at the inner end with the engaging portion 26 of the second operation plate 25, and engages the outer end with the first operation plate 24. It is locked at the construction key device operating position in such a manner that it abuts against the inner surface of the stopper.
[0050]
When both the first and second construction key devices are operated, as shown in FIGS. 2 and 3, both the first and second rest tumblers 21 and 22 have their locking projections 19 connected to the backup pins 81 (82). Abutting and the unlocked notch 4 is in an angular position where it aligns with the inner edge of the locking bar 11.
[0051]
During the construction, as shown in FIG. 3, when the first construction key CK1 whose inside is shorter than the portion corresponding to the first reset tumbler 28 is inserted into the key hole, the first construction key CK1 contacts the first reset tumbler 28. Therefore, the unlocking notch 4 (see FIG. 4) of the reset tumbler 28 remains aligned with the locking bar 11.
[0052]
This state is the same in the second operation plate 25 (see FIGS. 3 and 4).
[0053]
If the inner cylinder is rotated at this time, the locking bar 11 moves in the radial direction of the inner cylinder without interfering with the reset tumbler, so that the other rotary disk tumblers 2 and 2 are also placed at the unlocking angle position. This cons lock can be locked and unlocked by the first construction key CK1 during the construction period.
[0054]
Then, as shown in FIG. 5, when the second construction key CK2 is inserted into the key hole 5 for the first time after the completion of the construction, as shown in FIG. 6, the blade plane portion facing the engaging protrusion 7 of the first reset tumbler 28. The second construction key CK2 that secures the first reset tumbler 28 is pushed in the clockwise direction. As a result, the unlocking notch 4 of the first reset tumbler 28 is not aligned with the locking bar 11.
[0055]
When the inner cylinder 14 is rotated in this state, as shown in FIG. 7, the locking bar 11 that rides on the inner peripheral surface of the outer cylinder 12 from the cam groove 32 of the outer cylinder by the wedge action in the process. It moves in the radial direction, interferes with the free end portion of the first reset tumbler 28, and pushes it in the same direction as the moving direction of the locking bar 11.
[0056]
At this time, the first reset tumbler 28 and the first actuating plate 24 are integrally coupled via a projection 17d formed on the latter, so that both are located upward in the radial direction of the inner cylinder, that is, in FIG. As a result, the first operating plate 24 and the first backup pin 81 are disengaged, and the latter is released from the former.
[0057]
Then, the first backup pin 81 is moved in the direction in which the cutout portion 81a is aligned with the corresponding first pause tumbler 21 by the elasticity of the reset spring 23 (see FIG. 3), and thus the first construction key device is released. Is done.
[0058]
In the released state of the first construction key device, as shown in FIG. 5, the inner end of the first backup pin 81 comes into contact with and is locked to the outer end of the second backup pin 82. The extension position of the backup pin 81 in the inner cylinder axis direction is defined.
[0059]
As shown in FIG. 5, the second backup pin 82 is in a state in which an unnumbered notch formed at the inner end thereof is engaged with the locking portion 26 of the second operating plate 25, and the first backup pin 81 The position in the axial direction does not change even if the ball is in elastic contact. This state is a state in which the second construction key device is operating.
[0060]
In the illustrated embodiment, in order to transmit the movement of the first reset tumbler 28 to the first actuating plate 24, a projection is formed on the first actuating plate 24, and this is engaged with the first reset tumbler 28. However, for example, an engagement pin may protrude from the surface of the first reset tumbler 28 on the first operation plate side, and this may be engaged with an elongated hole formed in the first operation plate 24. (Not shown). In this case, the shape of the long hole becomes an arc as the first reset tumbler 28 is rotated by the first construction key CK1.
[0061]
When the first construction key device is released (when the second construction key device is actuated), as shown in FIG. 8, the first stop tumbler 21 (one in the illustrated embodiment) has a first locking projection 19. Since the cut-out portion 81a of the backup pin 81 passes through, the first pause tumbler 21 rotates by a predetermined angle by the biasing force.
[0062]
Since the unlocking notch 4 is not angularly aligned with the locking bar 11, the first resting tumbler 21 starts to function as the rotary disc tumbler 2.
[0063]
Therefore, only the second construction key CK2 in which the depression 9 (see FIG. 1) having an appropriate depth is formed in the portion facing the engagement protrusion 7 of the first resting tumbler 21 can be used. ) The first construction key CK1 used is invalid.
[0064]
The second construction key CK2 is used by a real estate company for building management until, for example, a completed building is sold.
[0065]
By the way, when the building is sold, the real estate company also delivers a joint key (dwelling unit key: not shown) when handing over the building to the resident. This dug key normally forms recesses corresponding to the five second pause tumblers 22-1 to 22-5 (see FIG. 3) at the back of the inner cylinder and engages with the second reset tumbler 29 at the back. The blade is long enough to secure the blade flat portion facing the protrusion 7.
[0066]
When the resident first inserts this key into the keyhole, since the second construction key device is in operation at this time, it is naturally unlocked, but at the same time, as described above, FIG. 6 and FIG. 7, the second reset tumbler 29 releases the second backup pin 29.
[0067]
Then, as shown in FIG. 9, the second backup pin 82 receiving the elasticity of the reset spring 23 via the first backup pin 81 is pushed inward by the first backup pin 81, and shown in FIG. It is pushed to a predetermined position.
[0068]
Then, the notch portions 82a and 82a of the second backup pin 82 move in the direction aligned with the corresponding second pause tumbler 22, and thus the second construction key device is also released.
[0069]
When the second construction key device is released, the first backup pin 81 is also moved further into the inner cylinder integrally with the second backup pin 82, but the cutout portion 81a of the first backup pin 81 is slightly longer. Therefore (see FIG. 3), the first pause tumbler 21 does not come off from the cutout portion 81a.
[0070]
When the second construction key device is released as described above, the second construction key CK2 used by the real estate company until then becomes invalid, and only the combined key can be used thereafter.
[0071]
FIGS. 10 to 19 show an embodiment of the invention described in claim 3. In this embodiment as well, when the construction key device is operated, the locking projections 19 of the pause tumblers 21 and 22 are as shown in FIG. Locked to the backup pin 8, the unlocking notch 4 is always in the non-operating angular position where it is aligned with the locking bar 11.
[0072]
However, when the construction key device is released, as shown in FIG. 11, the pause tumbler is aligned with the notch 8a of the backup pin (see FIG. 12), and the locking protrusion 18 is engaged with the notch 8a. As in the above-described embodiment, the unlocking notch 4 is not aligned with the locking bar 11 and starts to operate as a tumbler.
[0073]
Note that the engagement protrusion 7 is represented by a double line in FIGS. 11 and 12 in order to make this portion inclined by, for example, press working so that the operation when engaged with the key is smooth. (See FIG. 13).
[0074]
The tumbler spring 31 is a torsion coil spring for improving the reliability of the operation of the rotary disc tumbler. Correspondingly, a spring shaft 33 is attached to the support shaft 3 on the opposite side to the inner cylinder central axis. A tumbler spring 31 is wound around this (see FIG. 10).
[0075]
On the other hand, as shown in FIG. 12, the backup pin 8 in the invention of claim 3 is not divided as described above, but is a single casing.
[0076]
The first and second locking notches 34 and 35 are formed along the length direction of the backup pin 8 on the side facing the central axis of the inner cylinder, and the notches 8a and 8a are formed on the opposite sides. Yes.
[0077]
On the other hand, in the invention according to the third aspect, three of the 11 rotary disc tumblers shown in FIG. 13 which are close to the inner key guide 15 are used at all times when the construction key device is operated and released. Indicates a disc tumbler.
[0078]
In the same manner as in FIG. 3, the one-time pause tumbler 21, the first reset tumbler 28, the first to fifth secondary pause tumblers 22-1 to 22-5, and the second reset tumbler 29 are provided.
[0079]
The difference between the rotary disk tumbler lock with a construction key device according to the invention described in claim 2 and that according to the invention described in claim 3 is that the former is divided into the primary and secondary pause tumblers 21, 22 in two. The first and second backup pins 81 and 82 connected in the lengthwise direction are engaged with each other, a gap is provided between these backup pins, and the first backup pin 8 moves inwardly. When releasing the primary pause tumbler, the second backup pin is not moved.
[0080]
On the other hand, in the latter, that is, in the rotary disk tumbler lock with the construction key device according to the third aspect of the invention, as shown in FIG. 13, when the first construction key CK1 is used, the first locking notch 34 (FIG. 12) is used. When the back-up pin 8 is kept in the operating position shown in FIG. 13, the left operating portion of the second locking notch 35 and the second operating plate 25 are Keep the gap.
[0081]
As described above and as will be described later, the second construction key CK2 is inserted into the key hole, and the first reset tumbler 28 moves the locking portion 26 of the operating plate 26 in the direction of the inner cylinder central axis. When the engagement between the locking portion 26 and the first locking notch 34 is released, as shown in FIG. 14, the backup pin 8 moves to the right due to the elasticity of the reset spring 23, and the notch 8a (see FIG. 12). And the primary pause tumbler 21 are aligned in the inner cylinder axis direction.
[0082]
At the same time, the stepped portion on the left side of the second locking notch 35 is stopped by the locking portion 26 of the second operating plate 25, and the backup pin 8 is maintained at the position shown in FIG. 14, and the second construction key CK2 Can be used.
[0083]
Then, when the resident who is handed over the dwelling unit key HK from the real estate company first inserts the dwelling unit key HK, the second operating plate 25 releases the backup pin 8 in the same manner as described above, and the backup pin 8 is shown in FIG. Moving further to the right as shown, all rotary disc tumblers are in operation as tumblers.
[0084]
FIG. 16 is a view of the first (second) operating plate 24 (25) viewed from the inside (right side in FIG. 13). The operating plate is divided into two upper and lower plates, and the upper operating plate is fixed. The lower one is guided so as to be movable in the vertical direction, and is biased downward as in the fourth illustrated embodiment.
[0085]
Further, a locking portion 26 is formed above the backup pin insertion hole 17b (see FIG. 17) opened in the lower working plate, and the backup pin 8 is on the near side in FIG. 17 of the locking notch 34 (35). The step portion is engaged with the engagement portion 26 to be engaged with the operation plate.
[0086]
When the engaging protrusion 7 of the reset tumbler 28 (29) comes into contact with the flat surface of the key, the unlocking cutout 4 of the reset tumbler is detached from the locking bar 11 as shown in FIG. When the inner cylinder is rotated, the reset tumbler 28 (29) is pushed through the reset protrusion 17d of the operating plate so that the lower half of the operating plate is brought close to the central axis of the inner cylinder. As a result, the backup pin 8 Is released from the locking portion 26 and moves in the direction of the paper, and settles in a new position so as to sink under the locking portion 26 as shown in FIG.
[0087]
【The invention's effect】
As is clear from the above description, the invention described in claim 1 designates at least one selected tumbler as a resting tumbler and forms a locking projection on these resting tumblers so that when the construction device is in operation. By engaging this locking projection with the backup pin, the resting tumbler is placed in an inoperative state, so that a construction key with a narrowed or shortened portion facing the resting tumbler can be used, while the first key after construction is completed By moving the backup pin in the direction of the inner cylinder axis, the resting tumbler can be hidden under the notch of the backup pin, so that the construction device can be released without specialized tools and techniques. The unlocking operation of the device can be greatly streamlined.
[0088]
For the same reason, the number of persons handling the key can be minimized, and the security of the lock can be further enhanced.
[0089]
Furthermore, in principle, the construction key can have a shape completely different from that of the key, so there is no possibility of duplicating the key from the construction key.
[0090]
In addition, according to the invention described in claim 2 and claim 3, the construction key device can be switched between two stages, the safety of the lock can be further improved, and construction and building management can be further improved. There are various effects, such as being easy.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view of a rotary disc tumbler tablet previously proposed by the present applicant.
FIG. 2 is an enlarged cross-sectional view of a cons lock according to an embodiment of the present invention as set forth in claim 2, showing a case where the construction key device is operating.
FIG. 3 is an enlarged longitudinal sectional view of a cons lock according to an embodiment of the present invention as set forth in claim 2, and shows a case where the first and second construction key devices are operating.
4 is a cross-sectional view of the operation plate and release tumbler portion of the cons lock shown in FIG. 3, showing a case where the construction key device is operating.
FIG. 5 is a longitudinal sectional view of a cons lock similar to FIG. 3, showing a state in which the first construction key device is released.
6 is a cross-sectional view of an operation plate and a release tumbler portion of a cons lock similar to FIG. 4, showing a state in which a second construction key or a combined key is inserted into a key hole.
7 is a cross-sectional view of the operation plate and the release tumbler portion of the cons lock similar to FIG. 4, with the second construction key or the combined key inserted into the key hole and unlocked, and the inner cylinder slightly rotated Indicates.
FIG. 8 is an enlarged cross-sectional view of a cons lock similar to FIG. 2, showing the construction key device released.
FIG. 9 is a longitudinal sectional view of a cons lock similar to FIG. 3, showing a state in which the first and second construction key devices are released.
FIG. 10 is an enlarged cross-sectional view of a cons lock according to an embodiment of the present invention as set forth in claim 3, showing a case where the construction key device is operating.
FIG. 11 is an enlarged cross-sectional view of a cons lock according to an embodiment of the present invention as set forth in claim 3, and shows a case where the construction key device is released.
FIG. 12 is a side view of a backup pin of a cons lock according to an embodiment of the invention as set forth in claim 3;
FIG. 13 is an enlarged longitudinal sectional view of a cons lock according to one embodiment of the present invention as set forth in claim 3, and shows a case where the first and second construction key devices are operating.
FIG. 14 is an enlarged longitudinal sectional view of a cons lock according to an embodiment of the present invention as set forth in claim 3, and shows a case where the second construction key device is operating.
FIG. 15 is an enlarged longitudinal sectional view of a cons lock according to one embodiment of the present invention as set forth in claim 3, and shows a case where the construction key device is released.
FIG. 16 is a cross-sectional view of the operation plate and the release tumbler portion of the lock according to the third aspect of the present invention, showing a case where the construction key device is operating.
17 is a cross-sectional view of an operation plate and a release tumbler portion of a cons lock similar to FIG. 16, showing a state in which a second construction key or a combined key is inserted into a key hole.
FIG. 18 is a cross-sectional view of the operation plate and release tumbler portion of the cons lock similar to FIG. 16, with the second construction key or the combined key inserted into the key hole, unlocked, and the inner cylinder slightly rotated Indicates.
FIG. 19 is an enlarged cross-sectional view of a cons lock similar to FIG. 16, showing the construction key device released.
[Explanation of symbols]
1 Key insertion hole
2 Rotary disc tumbler
3 spindles
4 Unlock notch
5 Keyhole
6 Joint key
7 Engagement protrusion
8 Backup pin
9 depression
11 Locking bar
12 outer cylinder
13 ridges
14 inner cylinder
15 Key guide
16 Tail plug
17 Partition plate
18 retainers
19 Locking projection
21 First pause tumbler
22 Second pause tumbler
23 Reset spring
24 1st operation plate
25 Second operating plate
26 Locking part
27 Actuating leaf spring
28 First reset tumbler
29 Second reset tumbler
31 Tumbler spring
32 Cam groove
33 Spring shaft
34 First locking notch
35 Second locking notch
81 First backup pin
82 Second backup pin

Claims

An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. The unlocking notch is formed on the outer edge of the free end that forms part of the arc, while the flat part of the blade of the key is inserted at the opening edge of the key insertion hole and the movement locus of the tip is inserted into the key hole. Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to Specified as pause tumbler at least one tumbler of the rotary disc tumbler lock which is to be relative rotation with respect to the cylinder, is the entity portion of the rotary disc tumbler facing the shaft across the rest tumbler, the key insertion hole A locking projection is formed on the inner edge of the free end, and when the construction key device is activated, the locking projection is engaged with the backup pin to place the pause tumbler in a non-operating state. It is possible to use a construction-specific construction key that has been cut by cutting or shortening the side edge of the previous blade. On the other hand, when the construction key device is in operation, the back-up is cut out in the vicinity of the part that engages with the pause tumbler. The pin is guided so that it can move a certain distance in the axial direction. The part is urged to align with the resting tumbler. On the other hand, when the construction key device is activated, an operating plate that engages with the backup pin and locks it to the construction key device operating position is provided to be movable in the inner cylinder radial direction. The free end portion of the reset disk tumbler arranged so as to overlap with the operation plate and guided so as to be movable in the radial direction of the inner cylinder is the substantial part of the rotary disk tumbler facing the support shaft across the key insertion hole On the outer edge, an unlocking notch that aligns with the locking bar when the construction key is inserted into the keyhole is formed, so that when the construction key is used, the locking bar is allowed to enter the reset tumbler notch to back up the operating plate Operation of the dwelling unit key, which is held in the locked position and has a flat blade section facing the engaging protrusion of the reset tumbler At the time, the operating plate is moved by the locking bar through the locking portion between the reset tumbler and the reset tumbler and the operating plate, the backup pin is unlocked by the operating plate to release the backup pin, and the cutout portion of the backup pin A rotary disk tumbler lock with a construction key device, wherein the construction key device is released by aligning the suspender and the pause tumbler.

An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. Ri, unlocking cutouts formed on the free end portion outer edge forming part of the arc, while the opening edge of the key insertion hole, the planar portion of the blade of a duplicate key of the movement locus of the tip is inserted into the key hole Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to At least one tumbler of the rotary disc tumbler lock which is to be relative rotation with respect to the cylinder designated as a first rest tumbler, also at least one tumbler adjacent to the inside than the first pause tumbler first Designated as two rest tumblers, a locking projection is formed on the inner edge of the free end, which is the substantial part of the rotary disc tumbler facing the support shaft across the key insertion hole of the first and second rest tumblers. When the construction key device is activated, the resting tumbler is placed in a non-actuated state by engaging this locking projection with the backup pin, so that the side edge of the blade ahead of the portion facing the resting tumbler is cut out and thinned. Alternatively, a shorter first construction key can be used, while a construction key A backup pin that is cut out in the vicinity of a portion that engages with the pause tumbler at the time of installation is divided into a first backup pin that engages with the first pause tumbler and a second backup pin that engages with the second pause tumbler; The first backup pin is guided so as to be movable by a certain distance in the axial direction, and the first backup pin is urged in a direction in which the notch portion is aligned with the resting tumbler. On the other hand, when the construction key device is operated, the first backup pin is engaged with A first operation plate for locking the operation key device at the construction key device operating position and a second operation plate for locking the second backup pin at the construction key device operation position, respectively, so as to be movable in the inner cylinder radial direction. First and second resetters arranged to overlap each of the operation plates and guided to be movable in the radial direction of the inner cylinder An unlocking notch that aligns with the locking bar when the construction key is inserted into the key hole is formed on the outer edge of the free end, which is the substantial part of the rotary disk tumbler that faces the support shaft across the key insertion hole of the blur. Therefore, when the first construction key is used, the locking plate is allowed to be engaged with the reset tumbler notch to hold the operating plate at the backup pin locking position, while the blade flat portion facing the engaging protrusion of the first reset tumbler is provided. The first reset tumbler and the first reset tumbler and the first operation at the time of operation of the second construction key, which is secured, and the side edge of the blade ahead of the portion facing the second rest tumbler is cut out and thinned or shortened The first actuating plate is moved by the locking bar via the engaging part with the plate, and the first back plate by the first actuating plate is moved. The first backup pin is released by unlocking the first pin, so that the notch portion of the first backup pin and the first pause tumbler are aligned to enable the use of the second construction key, and the second During the first use of the dwelling unit key that secures the blade flat surface facing the engagement protrusion of the reset tumbler, the second operation is performed by the locking bar via the second reset tumbler and the engaging portion of the second reset tumbler and the second operation plate. The plate is moved, the second backup pin is unlocked by the second operation plate, and the second backup pin is released via the one backup pin, so that the notch portion of the second backup pin and the second pause tumbler are The rotary key with the construction key device is characterized in that the construction key device is released. Disk tumbler tablets.

An outer cylinder in which a cam groove having a substantially V-shaped cross section is formed along the generatrix of the inner peripheral surface, and a plurality of partitions that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap While providing a plate, the inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, is guided to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and A locking bar which is biased in a direction in which an outer edge engaged with the cam groove protrudes outward, and a key insertion hole having a size capable of enclosing the key hole in the center in each slot between the partition plates In order to increase rigidity, an annularly shaped rotary disc tumbler is inserted, and one of its substantial parts is pivotally supported on a spindle that penetrates the inner cylinder in the axial direction, and a key is inserted. This is the actual part of the rotary disc tumbler that faces the above spindle with a hole in between. Ri, unlocking cutouts formed on the free end portion outer edge forming part of the arc, while the opening edge of the key insertion hole, the planar portion of the blade of a duplicate key of the movement locus of the tip is inserted into the key hole Or, an engaging protrusion that interferes with the end edge portion is integrally projected, and each rotary disk tumbler is urged in a direction in which the engaging protrusion approaches the key, and normally, a backup pin that penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. When the inner cylinder is aligned with the inner edge of the bar and the inner cylinder is rotated integrally with the key, the locking bar is moved in the direction of the center axis of the inner cylinder by the wedge action generated between the cam groove and the locking bar. Move the inner cylinder to At least one tumbler of the rotary disc tumbler lock which is to be relative rotation with respect to the cylinder designated as a first rest tumbler, also at least one tumbler adjacent to the inside than the first pause tumbler first Designated as two rest tumblers, a locking projection is formed on the inner edge of the free end, which is the substantial part of the rotary disc tumbler facing the support shaft across the key insertion hole of the first and second rest tumblers. When the construction key device is activated, the resting tumbler is placed in a non-actuated state by engaging this locking projection with the backup pin, so that the side edge of the blade ahead of the portion facing the resting tumbler is cut out and thinned. Alternatively, a shorter first construction key can be used, while a construction key The first and second locking notches are formed along the length direction of the backup pin that is notched in the vicinity of the portion that engages with the pause tumbler during the installation operation, on the side facing the central axis of the inner cylinder. The backup pin is guided so as to be movable inward, and urged inward. On the other hand, when the construction key device is operated, it engages with the first locking notch and locks it in the construction key device operating position. A first operating plate and a second operating plate that is engaged with the second locking notch when the engagement between the first locking notch and the first operating plate is released and the backup pin further moves inward are respectively provided. The first and second reset tumblers that are provided so as to be movable in the inner cylinder radial direction and are arranged so as to overlap each of the operation plates and are guided so as to be movable in the inner cylinder radial direction sandwich the key insertion holes. Rotary disc facing the spindle An unlocking notch that aligns with the locking bar when the construction key is inserted into the keyhole is formed on the outer edge of the free end, which is the tumbler body, so that when the first construction key is used, the locking bar reset tumbler notch The operation plate is held at the backup pin locking position while securing the blade flat portion facing the engagement protrusion of the first reset tumbler and the blade ahead of the portion facing the second rest tumbler. When operating the second construction key, which has a side edge cut out and narrowed or shortened, the first actuating plate is moved by the locking bar via the first reset tumbler and the engaging part between the first reset tumbler and the first actuating plate. To release the backup pin by releasing the lock of the backup pin by the first operating plate. The first use of the dwelling key that allows the use of the second construction key by aligning the notch portion of the pin with the first resting tumbler, and also securing the blade flat portion facing the engaging protrusion of the second reset tumbler The second reset tumbler and the second reset tumbler through the locking portion of the second reset tumbler and the second actuating plate, the second actuating plate is moved by the locking bar, and the backup pin is unlocked by the second actuating plate. 2. A rotary disk tumbler lock with a construction key device, wherein the notch portion of the backup pin and the second rest tumbler are aligned to release the construction key device.

The locking portion between the reset tumbler and the operation plate projects from the surface of the operation plate facing the reset tumbler, and is a substantial portion of the rotary disk tumbler that faces the support shaft across the key insertion hole of the reset tumbler. The rotary disk tumbler lock with a construction key device according to claim 1 or 2, wherein the rotary protrusion is a reset protrusion facing the inner edge of the free end.

The engaging portion between the reset tumbler and the operation plate is an engagement pin that protrudes from a surface facing the operation plate of the reset tumbler and is fitted to a pin hole opened in the operation plate. Rotary disk tumbler lock with construction key device.