JP4145483B2

JP4145483B2 - Pin cylinder lock

Info

Publication number: JP4145483B2
Application number: JP2000379509A
Authority: JP
Inventors: 三徳三宅
Original assignee: Goal Co Ltd
Current assignee: Goal Co Ltd
Priority date: 2000-11-07
Filing date: 2000-11-07
Publication date: 2008-09-03
Anticipated expiration: 2020-11-07
Also published as: JP2002147072A

Description

【０００１】
【発明の属する技術分野】
本発明は、合鍵以外の部材を鍵穴に差し込んで、上ピンと下ピンとの境界線が内筒と外筒との境界線であるシェアラインに一致しない状態において、内筒にその回動方向に力を作用させた時、下ピンは外筒と内筒とに挟まれた（つまりシェアラインと交差した）状態となり上下方向に作動できないときでも、前記合鍵以外の部材の接触面に下ピンとの圧接により痕跡が形成されないようにしたピンシリンダー錠に関する。
【０００２】
【従来の技術】
従来のピンシリンダー錠では、合鍵以外の部材を鍵穴に差し込んで、上ピンと下ピンとの境界線が内筒と外筒との境界線であるシェアラインに一致しない状態において、内筒にその回動方向に力を作用させると、下ピンが外筒と内筒とに挟まれた状態となり上下方向に作動できない固定状態となった。この状態で前記合鍵以外の部材を強く掴んだまま梃子の作用で上下方向に何度も抉ると、固定された下ピンと接触する合鍵以外の部材の接触面に、下ピンとの圧接による痕跡が形成されるようになる。
【０００３】
前記合鍵以外の部材として、例えば、鍵山が全く形成されていない生鍵（ブランクキー）を用いた場合について以下に説明する。この生鍵（ブランクキー）を内筒の鍵穴に差し込んで、上記の方法で該生鍵と下ピンとの接触面に痕跡を形成させる。そして、その痕跡をヤスリ等で少しずつ削っていく。それを繰り返していくうちに、痕跡が残らない状態になり、生鍵を削って形成した鍵山の高さが正規な合鍵の鍵山の高さと一致する状態に到達する。すると、この状態では、上ピンと下ピンとの境界線が外筒と内筒とのシェアラインに一致するから、内筒は下ピンと共に回動可能状態となり、この状態にある下ピンは固定状態とはならない。下ピンが固定されないと、前記方法によって生鍵を抉ても下ピンとの接触面に痕跡は形成されなくなる。
【０００４】
例えば、上ピンと下ピンとが６個所（コラム）設けてある、所謂６本シリンダー錠では、前記の方法を６個所分だけ繰り返すことにより生鍵（ブランクキー）の６個所に正規の合鍵の鍵山と同じ高さの鍵山を形成することができる。
【０００５】
【発明が解決しようとする課題】
このようにして、従来では、生鍵などの合鍵以外の部材に下ピンの痕跡が形成されなくなるまで、その痕跡を少しずつ削って行くことによって、正規の合鍵の鍵山と同じ高さの鍵山を形成することができる。従って、合鍵がなくても、生鍵から正規な合鍵と同じ合鍵を作成することができた。この合鍵作成方法が、正しい目的のために使用されればよいが、悪用される危険もあるという問題点があった。
【０００６】
本発明は、上記従来の問題点を解消しようとするものであって、合鍵を複製されて悪用される危険のない防犯性に優れたピンシリンダー錠を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記目的を達成するため、本発明のピンシリンダー錠は、ピン孔を有する外筒にピン孔と鍵穴とを有する内筒を回動自在に嵌装し、前記外筒のピン孔にバネで内筒側へ付勢した上ピンを、内筒のピン孔に下ピンをそれぞれ摺動可能に嵌装し、この上下両ピンの境界線が外筒と内筒との境界線であるシェアラインに一致するときに内筒の回動を可能としたピンシリンダー錠において、
前記内筒の鍵穴に合鍵以外の部材を差し込んで回転力を付与したときに、下ピンと合鍵以外の部材とは離間して非接触状態となるように隙間を形成する非接触状態保持機構を設け、
前記非接触状態保持機構として、下ピンは、円柱状に形成して、その下ピンの一部に傾斜面を形成する一方、該下ピンが摺動される内筒のピン孔には係合部を形成し、合鍵以外の部材を内筒の鍵穴に差し込んで内筒に回転力を付与した時に、該内筒の係合部が前記下ピンの傾斜面を押し上げて、下ピンと合鍵以外の部材との接触面同士が非接触状態となるように隙間を形成するようにしてあることを特徴とする。
【０００８】
ここで、合鍵以外の部材とは、鍵山が全く形成されていない生鍵（ブランクキー）、その他合鍵の鍵山を複製して正規な合鍵と同じ鍵として作成できる部材をいう。
【０００９】
また、非接触状態保持機構とは、合鍵以外の部材を内筒の鍵穴に差し込んで、上下・左右その他の方向に揺動して回転力を付与したときに、下ピンと合鍵以外の部材の接触部同士が離間して接触しないようになるものであればよい。
【００１０】
例えば、非接触状態保持機構として下ピンは、円柱状に形成して、その下ピンの一部に傾斜面を形成する一方、該下ピンが摺動される内筒のピン孔には係合部を形成し、合鍵以外の部材を内筒の鍵穴に差し込んで内筒に回転力を付与した時に、該内筒の係合部が前記下ピンの傾斜面を押し上げて、下ピンと合鍵以外の部材との接触面同士が非接触状態となるように隙間を形成するようにしてある場合、下ピンの傾斜面と内筒のピン孔に形成した係合部とによって、下ピンと合鍵以外の部材との接触面同士が非接触状態になる時点は、合鍵以外の部材を鍵穴に差し込んで回転力を付与した第一回目の時点でもよく、又は第二回目から正規な合鍵の鍵山が完全に複製し終わる前の回目までの中途時点でもよい。
【００１１】
前記の如く、合鍵以外の部材の回転力によって下ピンを押し上げるための具体的構成は、上記構成のほか、下ピンの構造と内筒のピン孔の構造との相関関係により、適宜設計変更できるものである。本発明では、前述のように、合鍵以外の部材により回転力を付与した初期又は中途の時点で、下ピンを押し上げる構造に限定されず、例えば、正規な合鍵の鍵山が複製できないように、合鍵以外の部材による複製行為中の任意時点で下ピンが内筒のピン孔の任意個所に係止又は保持されて、合鍵以外の部材の接触面に下ピンの痕跡を残さない構成であってもよく、任意である。
【００１２】
非接触状態保持機構は、上ピンと下ピンとを１組として複数組のピン群を有するピンシリンダー錠において、少なくとも１個以上の下ピンの接触面が、合鍵以外の部材を鍵穴に差し込んで回転したときに、該下ピンと合鍵以外の部材とが離間して非接触状態となればよい。
【００１３】
【実施例１】
本発明の実施例１を図１〜図８に基づいて以下に説明する。
このピンシリンダー錠は、図１、図２に示すように、ピン孔２ａ、２ｂ、２ｃ、２ｄ、２ｅ、２ｆを有する外筒１に、ピン孔６ａ、６ｂ、６ｃ、６ｄ、６ｅ、６ｆと鍵穴８とを有する内筒５を回動自在に嵌装し、前記ピン孔２ａ〜２ｆにはバネ３…３で内筒５側へ付勢した上ピン４ａ、４ｂ、４ｃ、４ｄ、４ｅ、４ｆを、ピン孔６ａ〜６ｆには下ピン７ａ、７ｂ、７ｃ、７ｄ、７ｅ、７ｆをそれぞれ摺動可能に嵌装している。
【００１４】
そして、図１に示すように、正規な合鍵Ｋを内筒５の鍵穴８に差し込んだときに、上下両ピン４ａ〜４ｆ、７ａ〜７ｆの境界線９ａ〜９ｆが、外筒１と内筒５との境界線であるシェアラインＬに一致するときに内筒５の回動ができ、内筒の回動によって施解錠部材（図示せず）を作動させて施解錠できるようにしてなるものである。
【００１５】
従来のピンシリンダー錠における下ピン群は、図１の第２コラムの下ピン７ｂや第３コラムの下ピン７ｃの如く、全部が円柱状に形成されているため、上記従来技術で説明したように、合鍵以外の部材〔生鍵（ブランクキー）など〕ＢＫを鍵穴に差し込んで、図２のような状態で前記合鍵以外の部材ＢＫを内筒の回動方向に力を作用させながら、上下方向に何度も抉ると、合鍵以外の部材ＢＫの接触面に下ピンの圧接による痕跡が形成される。この痕跡を前述したようにヤスリ等で削って行くことによって、正規の合鍵Ｋの鍵山Ｋ１〜Ｋ６と同じ高さの鍵山が形成でき、合鍵以外の部材ＢＫから正規な合鍵Ｋと同じ合鍵が作成できるという、問題があった。
【００１６】
そこで、本発明では、内筒５の鍵穴８に、例えば鍵山が全く形成されていない生鍵（ブランクキー）などの合鍵以外の部材ＢＫを差し込んで内筒に回転力を付与したときに、下ピン７ａ、７ｄ、７ｅ、７ｆと合鍵以外の部材ＢＫとは離間して非接触状態となるように隙間を形成する非接触状態保持機構１０を設けてなるものである。
この場合、内筒５の鍵穴８に合鍵以外の部材ＢＫを差し込んだだけの状態においては、図２に示すように、各上下両ピン４ａ〜４ｆ、７ａ〜７ｆの境界線９ａ〜９ｆが、外筒１と内筒５との境界線であるシェアラインＬに一致していないので、内筒５を前記合鍵以外の部材ＢＫで回動することはできない。
【００１７】
非接触状態保持機構１０について以下に詳細に説明する。
この実施例１における非接触状態保持機構１０…１０は、図１及び図２に示すように、第１コラムの下ピン７ａ、第４コラムの下ピン７ｄ、第５コラムの下ピン７ｅ、第６コラムの下ピン７ｆの４個所に設けてあり、第２コラムの下ピン７ｂと第３コラムの下ピン７ｃの２個所は前述したように公知の従来ピンである。
【００１８】
前記４個所の非接触状態保持機構１０、１０、１０、１０は、いずれも、下ピン７ａ、７ｄ、７ｅ、７ｆを、円柱状に形成して、その下ピン７ａ、７ｄ、７ｅ、７ｆの一部に傾斜面１２…１２を有する小径の段差部１１…１１を形成する一方、該下ピン７ａ、７ｄ、７ｅ、７ｆが摺動される内筒５のピン孔６ａ、６ｄ、６ｅ、６ｆの入口（内筒側の開口部）には、合鍵以外の部材ＢＫを内筒５の鍵穴８に差し込んで回転力を付与した時に、前記下ピン７ａ、７ｄ、７ｅ、７ｆの傾斜面１２…１２を押し上げて、下ピン７ａ、７ｄ、７ｅ、７ｆと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるようにした係合部１５…１５を形成してある点で共通する。この場合の係合部１５…１５は、略漏斗状とした内筒５のピン孔６ａ、６ｄ、６ｅ、６ｆの入口（内筒側の開口部）位置にあって大径部１６から下方の下り傾斜面部位が担っている。
【００１９】
前記４個所の非接触状態保持機構１０…１０のうち、第４コラムの下ピン７ｄと第５コラムの下ピン７ｅとは同一態様を示し、第１コラムの下ピン７ａと第６コラムの下ピン７ｆとは同一態様を示している。
【００２０】
非接触状態保持機構１０の第５コラムの下ピン７ｅについて図３〜図４、図２に基づいて以下に説明する。
この場合の下ピン７ｅの段差部１１に形成した傾斜面１２と、下ピン孔６ｅ、６ｄの入口（内筒側の開口部）に形成した係合部１５とは、図３と図２に示すように、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態で、殆ど接触する程に接近しているとともに、該合鍵以外の部材ＢＫの接触面１４と下ピン７ｅの接触面１３とは接触している。
【００２１】
図３、図２の状態で、合鍵以外の部材ＢＫに回転力を付与すると、図４に示すように、内筒５は回転されて内筒５の係合部１５が、下ピン７ｅの傾斜面１２を押し上げて、下ピン７ｅと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じる。そのため、合鍵以外の部材ＢＫの接触面１４に下ピン７ｅの痕跡が残らないから、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができない。従って、合鍵以外の部材から合鍵を複製することはできない。
第４コラムの下ピン７ｄについても同様である。
これにより、合鍵以外の部材ＢＫにより回転力を付与した初期の時点で、下ピン７ｅ、７ｄを押し上げて合鍵以外の部材ＢＫの接触面１４に痕跡を全く残さない。
【００２２】
非接触状態保持機構１０の第６コラムの下ピン７ｆについて図６〜図８、図２に基づいて以下に説明する。
この場合の下ピン７ｆの段差部１１に形成した傾斜面１２と、内筒５のピン孔６ｆの入口（内筒側の開口部）に形成した係合部１５とは、図６と図２に示すように、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態で図３〜図５の場合と比較して、かなり離間している。そのため、図６と図２の状態では、合鍵以外の部材ＢＫに回転力を付与した場合、内筒５のピン孔６ｆの大径部１６が下ピン７ｆの大径部に当接するので、下ピン７ｆが内筒５と外筒１とに挟まれた状態となり固定される。従って、合鍵以外の部材ＢＫを、回転力を付与したまま上下方向に抉ると、合鍵以外の部材ＢＫの接触面１４には下ピン７ｆの痕跡が残り、この痕跡をヤスリ等で削ることができる。次に、図７は、上記痕跡部をヤスリで削って痕跡の深さ２０を形成した合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態を示す。この場合下ピン７ｆの傾斜面１２と、内筒のピン孔６ｆの入口（内筒側の開口部）の係合部１５とは図７に示すように、殆ど接触する程に接近している。
【００２３】
図７の状態で、合鍵以外の部材ＢＫに回転力を付与すると、図８に示すように、内筒５も回転されて内筒５の係合部１５が下ピン７ｆの傾斜面１２を押し上げて、下ピン７ｆと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じる。そのため、合鍵以外の部材ＢＫの接触面１４に下ピン７ｆの痕跡が残らないから、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができない。従って、合鍵以外の部材から合鍵を複製することはできない。
【００２４】
第１コラムの下ピン７ａについても、同様である。
【００２５】
この非接触状態保持機構１０の第６コラムの場合（図６〜図８）によれば、合鍵以外の部材を鍵穴に差し込んで回転力を付与した少なくとも初回目には、該合鍵以外の部材の接触面に痕跡が残り複製行為が行なえる。しかし、初回目に形成された痕跡を削った後、回転力付与の２回目以降の複製加工途中で、内筒５のピン孔の入口（内筒側の開口部）の係合部１５が、内筒５のピン孔７ｆ、７ａの段差部１１に形成した傾斜面１２と係合して該下ピン７ｆ、７ａを押し上げて、下ピンと合鍵以外の部材ＢＫの接触面１４とが離間し隙間Ｓを形成する。そのため、複製加工が行なえないようになるものである。
【００２６】
非接触状態保持機構１０は、前述のものに限定されるものではなく、例えば下ピンの段差部１１や内筒５の下ピン孔の入口近傍の形状を変えることにより、適宜設計変更できるものである。例えば、図９や、図１０〜図１２に示す実施例２および３のものでもよい。
【００２７】
【実施例２】
図９は本発明の実施例２を示し、非接触状態保持機構１０の図３〜図５の変形例と言えるものである。この図９では、内筒５のピン孔６ａ〜６ｆの入口（内筒側の開口部）が、図３の如く大径部１６を有する座ぐりを形成していないものであって、大径部１６と同一径からなる円筒部の一部を形成している点と、下ピン７ａ〜７ｆに形成した小径の段差部１１を図３に比べて上部に形成して、その傾斜面１２と、内筒５のピン孔の入口端縁が形成する係合部１５とを、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態では図３の如く殆んど接触する程に接近させ、前記合鍵以外の部材ＢＫに回転力を付与すると、図９の如く内筒５も回転されて係合部１５が下ピンの傾斜面１２と係合して押し上げられて、下ピンと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じ、合鍵以外の部材ＢＫの接触面１４に下ピンの痕跡が残らないため、図４、図５の場合と同様に正規の合鍵の鍵山を作ることができない。
【００２８】
【実施例３】
図１０〜図１２は本発明の実施例３を示し、非接触状態保持機構１０の図３〜図５のものと図６〜図８のものの両者の機能を有するものである。すなわち、図１０〜図１２の場合、下ピン７ａ〜７ｆに二段の段差部１１、１１を形成して傾斜面１２、１２を２個設け、下部の傾斜面１２と、内筒５のピン孔６ａ〜６ｆの入口（内筒側の開口部）の座ぐりに形成した係合部１５とは、図１０に示すように、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態で、殆んど接触する程に接近しているとともに、上部の傾斜面１２と前記係合部１５とは、図１０に示す状態で、かなり離間している。
【００２９】
合鍵以外の部材（生鍵）ＢＫを鍵穴８に差し込み回転力を付与していない図１０の状態で、合鍵以外の部材ＢＫに回転力を付与すると、図４と同様に、内筒５も回転されて内筒５の係合部１５が、下ピン７ａ〜７ｆの上部の傾斜面１２を押し上げて、下ピン７ａ〜７ｆと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じる。そのため、合鍵以外の部材ＢＫの接触面１４に下ピン７ａ〜７ｆの痕跡が残らないから、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができない。従って、合鍵以外の部材から合鍵を複製することはできない。これにより、合鍵以外の部材ＢＫにより回転力を付与した初期の時点で、下ピンを押し上げて合鍵以外の部材ＢＫの接触面１４に痕跡を全く残させない。
【００３０】
図１１の状態で、合鍵以外の部材ＢＫに回転力を付与すると、図１２に示すように、内筒５も回転されて内筒５の係合部１５が、下ピンの上部の傾斜面１２を押し上げて、下ピンと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じる。そのため、合鍵以外の部材ＢＫの接触面１４に下ピンの痕跡が残らないから、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができない。従って、合鍵以外の部材から合鍵を複製することはできない。
【００３１】
【実施例４】
本発明の実施例４を図１３〜図１９に基づいて以下に説明する。
このピンシリンダー錠は、上・左右の３方向のコラムに上・下両ピンからなるピン群を配設するとともに、合鍵Ｋは図１３〜図１５に示すように上下・左右にディンプル状の鍵山Ｋ１０〜Ｋ１６…を形成した点に特徴を有し、合鍵Ｋによる施・解錠の原理は前記実施例１と同様である。
【００３２】
このピンシリンダー錠は、外筒１に内筒５を回動自在に嵌装し、外筒１には、上・左右の３方向にピン孔２ｈ、２ｉ、２ｊ、２ｋ、２ｌ、２ｍ、２ｐ、２ｑ、２ｒを形成して、該ピン孔２ｈ〜２ｒにバネ３…３で内筒５側へ付勢した上ピン４ｈ、４ｉ、４ｊ、４ｋ、４ｌ、４ｍ、４ｐ、４ｑ、４ｒを摺動可能に嵌装している。また、内筒５には、上・左右の３方向に前記外筒１のピン孔２ｈ〜２ｒと貫通する内筒５のピン孔６ｈ、６ｉ、６ｊ、６ｋ、６ｌ、６ｍ、６ｐ、６ｑ、６ｒを形成して、該内筒５のピン孔６ｈ〜６ｒに下ピン７ｈ、７ｉ、７ｊ、７ｋ、７ｌ、７ｍ、７ｐ、７ｑ、７ｒを摺動可能に嵌装しているとともに、鍵穴８を形成している。
この実施例４では、上・左右の３方向のそれぞれのコラムを３個ずつ形成しているが、４個以上ずつのコラム数としてもよく任意である。
【００３３】
そして、図１３、図１４に示すように、図１５に示す如き正規な合鍵Ｋを内筒５の鍵穴８に差し込んだときに、上下両ピン群４ｈ〜４ｒ、７ｈ〜７ｒの境界線９ｈ〜９ｒが、外筒１と内筒５との境界線であるシェアラインＬに一致するときに内筒５の回動ができ、内筒５の回動によって施解錠部材（図示せず）を作動させて施解錠できるようにしてなるものである。
【００３４】
この実施例４では、各下ピンが挿入される内筒５のピン孔６ｈ〜６ｒの入口（内筒側の開口部）は、図１〜図８の実施例１と同様に大径部１６の座ぐりが形成されているとともに、下ピン７ｉ、７ｊ、７ｋ、７ｑは従来の形状のもので合鍵の複製防止対策は採られていないものであり、下ピン７ｈ、７ｌ、７ｍ、７ｐ、７ｒは、内筒５の鍵穴８に、鍵山が全く形成されていない生鍵（ブランクキー）などの合鍵以外の部材ＢＫを差し込んで内筒に回転力を付与しながら上下方向に抉ったときに、該下ピン７ｈ、７ｌ、７ｍ、７ｐ、７ｒと合鍵以外の部材ＢＫとは離間して非接触状態となるようにした非接触状態保持機構１０を構成するものであって、合鍵の複製防止対策が採られているものである。
【００３５】
合鍵の複製防止対策が採られている上記下ピン７ｈ、７ｌ、７ｍ、７ｐ、７ｒは、いずれも、二段の段差部１１、１１を形成して傾斜面１２、１２を２個所形成してある点で共通する。
【００３６】
しかし、上記下ピンのうち、下ピン７ｈ、７ｍ、７ｐは、実施例１の下ピン７ｄ、７ｅと同様に、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態において、上部の傾斜面１２と、内筒５のピン孔６ｈ、６ｍ、６ｐの入口（内筒側の開口部）の座ぐりに形成した係合部１５とは殆んど接触する程に接近しており、非接触状態保持機構１０としては前記実施例１の下ピン７ｄ、７ｅと同様に作動する。
【００３７】
下ピン７ｌ、７ｒは、実施例１の下ピン７ａ、７ｆと同様に、合鍵以外の部材ＢＫを鍵穴８に差し込んだ状態において、上部の傾斜面１２と、内筒５のピン孔６ｌ、６ｒの入口（内筒側の開口部）の座ぐりに形成した係合部１５とはかなり離間しており、非接触状態保持機構１０としては前記実施例１の下ピン７ａ、７ｆと同様に作動する。
【００３８】
この場合、内筒５の鍵穴８に合鍵以外の部材ＢＫを差し込んでだけの状態においては、図１６〜図１８に示すように、少なくとも合鍵の複製防止対策が採られた各上下両ピン４ｈ〜４ｒ、７ｈ〜７ｒの境界線９ｈ〜９ｒが、外筒１と内筒５との境界線であるシェアラインＬに一致していないので、内筒５を前記合鍵以外の部材ＢＫで回動することはできない。
【００３９】
図１６〜図１８の状態で、合鍵以外の部材ＢＫを回転すると、図１９に示すように、実施例１の下ピンに相当する下ピン７ｈ、７ｍ、７ｐは、前記実施例１の下ピン７ｄ、７ｅと同様に作動して、合鍵以外の部材ＢＫの接触面１４に下ピン７ｈ、７ｍ、７ｐの痕跡が残らないから、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができない。従って、合鍵以外の部材から合鍵を複製することはできない。
【００４０】
一方、実施例１の下ピン７ａ、７ｆに相当する下ピン７ｌ、７ｒは、前記実施例１の図６〜図８と同様に、合鍵以外の部材ＢＫを鍵穴８に差し込んで回転力を付与した少なくとも初回目には、該合鍵以外の部材の接触面に痕跡が残り複製行為が行なえる。しかし、回転力付与の２回目以降の複製加工途中で、複製加工が行なえないようになるものである（図１９参照）。従って、痕跡部分をヤスリ等で削ることができず、正規な合鍵の鍵山を作ることができないため、合鍵以外の部材から合鍵を複製することはできないのである。
【００４１】
なお、図１９は、合鍵以外の部材ＢＫの接触面１４への痕跡部をヤスリ等で削って深さ２０を形成した合鍵以外の部材ＢＫを内筒５に差し込んだ状態と、各下ピン７ｈ、７ｌ、７ｐと合鍵以外の部材ＢＫとの接触面１３、１４同士が非接触状態となるように離間して隙間Ｓが生じている状態を示している。
【００４２】
【変形例等】
本発明は、上ピンと下ピンとを１組として複数組のピン群（コラム）が、実施例１のように内筒及び外筒の軸方向と垂直方向に一列に配置されたもの、実施例２のように内筒及び外筒の軸方向と垂直方向に三列に配置されたものに限定されず、二列又は四列に配置されたものにも適用できる。また、複数組のピン群（コラム）の個数は任意である。
【００４３】
非接触状態保持機構１０は、複数組のピン群（コラム）の少なくとも１つの下ピンに設けてあればよいが、２つ以上でもよいし、或いは全部の下ピンに設けてもよい。
【００４４】
係合部１５が傾斜面１２に係合して該当の下ピンの下動を阻止する位置は、正規な合鍵Ｋの鍵山の深さ等を考慮して設計するとよい。
【００４５】
【発明の効果】
請求項１のピンシリンダー錠によれば、内筒の鍵穴に合鍵以外の部材を差し込んで回転力を付与したときに、下ピンと合鍵以外の部材とは離間して非接触状態となるように隙間を形成する非接触状態保持機構を設けているから、前記合鍵以外の部材を回転することにより、該合鍵以外の部材の接触面に下ピンとの圧接による痕跡を形成することができないため、合鍵以外の部材から正規な合鍵を複製されることがなく、防犯性に優れたピンシリンダー錠を提供することができる。
より具体的に言うと、本発明は、前記非接触状態保持機構として、下ピンは、円柱状に形成して、その下ピンの一部に傾斜面を形成する一方、該下ピンが摺動される内筒のピン孔には係合部を形成し、合鍵以外の部材を内筒の鍵穴に差し込んで内筒に回転力を付与した時に、該内筒の係合部が前記下ピンの傾斜面を押し上げて、下ピンと合鍵以外の部材との接触面同士が非接触状態となるように隙間を形成するようにしてある。つまり、下ピンの一部に形成した傾斜面と、内筒のピン孔に形成した係合部とで非接触状態保持機構を構成しているから、下ピンの形状と内筒のピン孔の形状とを工夫するだけで非接触状態保持機構が作成できるため、特別な部材は不要で構造が簡単である。
【図面の簡単な説明】
【図１】本発明の実施例１を示し、合鍵を鍵穴に差し込んだ状態のピンシリンダー錠の全体の縦断面図である。
【図２】本発明の実施例１において、合鍵以外の部材（生鍵）を鍵穴に差し込んだ状態のピンシリンダー錠の全体の縦断面図である。
【図３】図２の第５コラムを示し合鍵以外の部材（生鍵）が非回転状態の縦断面図である。
【図４】図３の状態より合鍵以外の部材（生鍵）が回転されて、合鍵以外の部材（生鍵）の接触面が下ピンと接触していない状態を示す縦断面図である。
【図５】図２の第４コラムを示し合鍵以外の部材（生鍵）が回転されて、合鍵以外の部材（生鍵）の接触面が下ピンと接触していない状態を示す縦断面図である。
【図６】図２の第６コラムを示し合鍵以外の部材（生鍵）が非回転状態の縦断面図である。
【図７】図６の状態で合鍵以外の部材（生鍵）の接触面に生じた下ピンの痕跡を削った後に、更に合鍵以外の部材（生鍵）を鍵穴に差し込み回転力を付与していない状態の第６コラムの縦断面図である。
【図８】図７の状態より合鍵以外の部材（生鍵）が回転されて、合鍵以外の部材（生鍵）の接触面が下ピンと接触していない状態を示す縦断面図である。
【図９】本発明の実施例２の縦断面図である。
【図１０】本発明の実施例３で合鍵以外の部材（生鍵）を鍵穴に差し込み回転力を付与していない状態を示す縦断面図である。
【図１１】図１０で合鍵以外の部材（生鍵）を回転した後に生じた痕跡を削って、同合鍵以外の部材を鍵穴に再度挿入した状態を示す縦断面図である。
【図１２】図１１の状態で合鍵以外の部材（生鍵）を回転した状態を示す縦断面図である。
【図１３】本発明の実施例４を示し、正規な合鍵を鍵穴に差し込んだ状態のピンシリンダー錠の全体の水平断面図である。
【図１４】図１３のＡーＡ線断面図である。
【図１５】本発明の実施例４における正規な合鍵の正面図である。
【図１６】本発明の実施例４において、合鍵以外の部材（生鍵）を鍵穴に差し込んだ状態のピンシリンダー錠の全体の縦断面図である。
【図１７】本発明の実施例４において、合鍵以外の部材（生鍵）を鍵穴に差し込んだ状態のピンシリンダー錠の全体の水平断面図である。
【図１８】図１７のＢーＢ線断面図である。
【図１９】図１８の状態より合鍵以外の部材（生鍵）が回転されて、合鍵以外の部材（生鍵）の接触面が下ピンと接触していない状態を示す縦断面図である。
【符号の説明】
１外筒
２ａ〜２ｆピン孔
２ｈ、２ｉ、２ｊ、２ｋ、２ｌ、２ｍ、２ｐ、２ｑ、２ｒピン孔
３バネ
４ａ〜４ｆ上ピン
４ｈ、４ｉ、４ｊ、４ｋ、４ｌ、４ｍ、４ｐ、４ｑ、４ｒ上ピン
５内筒
６ａ〜６ｆピン孔
６ｈ、６ｉ、６ｊ、６ｋ、６ｌ、６ｍ、６ｐ、６ｑ、６ｒピン孔
７ａ〜７ｆ下ピン
７ｈ、７ｉ、７ｊ、７ｋ、７ｌ、７ｍ、７ｐ、７ｑ、７ｒ下ピン
８鍵穴
９ａ〜９ｆ上下両ピンの境界線
９ｈ、９ｉ、９ｊ、９ｋ、９ｌ、９ｍ、９ｐ、９ｑ、９ｒ上下両ピンの境界線
１０非接触状態保持機構
１１段差部
１２傾斜面
１３接触面
１４接触面
１５係合部
２０痕跡の深さ
Ｋ合鍵
ＢＫ合鍵以外の部材（生鍵）
Ｌシェアライン
Ｓ隙間[0001]
BACKGROUND OF THE INVENTION
  In the present invention, when a member other than the key is inserted into the keyhole, the boundary line between the upper pin and the lower pin does not coincide with the shear line that is the boundary line between the inner cylinder and the outer cylinder. Even when the lower pin is sandwiched between the outer cylinder and the inner cylinder (that is, intersects the shear line) and cannot be operated in the vertical direction, the lower pin is pressed against the contact surface of the member other than the key. It is related with the pin cylinder lock which did not form a trace by this.
[0002]
[Prior art]
  In a conventional pin cylinder lock, a member other than the key is inserted into the key hole, and the inner cylinder rotates in a state where the boundary line between the upper pin and the lower pin does not coincide with the shear line that is the boundary line between the inner cylinder and the outer cylinder. When a force is applied in the direction, the lower pin is sandwiched between the outer cylinder and the inner cylinder, and a fixed state is established in which the upper pin cannot be operated in the vertical direction. In this state, if the member other than the key is strongly gripped in the vertical direction by the action of the lever, a trace due to the pressure contact with the lower pin is formed on the contact surface of the member other than the key that contacts the fixed lower pin. Will come to be.
[0003]
  For example, a case where a raw key (blank key) in which no key ridge is formed is used as a member other than the key will be described below. This raw key (blank key) is inserted into the key hole of the inner cylinder, and traces are formed on the contact surface between the raw key and the lower pin by the above method. Then, scrape the trace little by little with a file. As the process is repeated, no trace remains, and the height of the key pile formed by cutting the raw key coincides with the height of the key pile of the regular key. Then, in this state, since the boundary line between the upper pin and the lower pin coincides with the share line between the outer cylinder and the inner cylinder, the inner cylinder becomes rotatable with the lower pin, and the lower pin in this state is in the fixed state. Must not. If the lower pin is not fixed, no trace is formed on the contact surface with the lower pin even if the raw key is hit by the above method.
[0004]
  For example, in a so-called 6-cylinder lock in which 6 pins (columns) are provided for the upper pin and the lower pin, the above-mentioned method is repeated for 6 locations, so that a key ring of a regular key is obtained at 6 locations of the raw key (blank key). A key pile with the same height can be formed.
[0005]
[Problems to be solved by the invention]
  In this way, conventionally, by removing the traces of the lower pins little by little until the traces of the lower pin are not formed on members other than the key, such as a raw key, a key mountain having the same height as the key chain of the regular key is obtained. Can be formed. Therefore, even if there was no key, it was possible to create the same key as the normal key from the raw key. This method of creating a key is only required to be used for a correct purpose, but there is a problem that there is a risk of misuse.
[0006]
  An object of the present invention is to provide a pin-cylinder lock excellent in crime prevention without risk of being duplicated and misused.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the pin cylinder lock of the present invention is configured such that an inner cylinder having a pin hole and a key hole is rotatably fitted to an outer cylinder having a pin hole, and the inner cylinder is pinned by a spring. The upper pin urged toward the cylinder side is slidably fitted into the pin hole of the inner cylinder, and the boundary line between the upper and lower pins is a share line that is the boundary line between the outer cylinder and the inner cylinder In the pin cylinder lock that allows the inner cylinder to rotate when they match,
  Provided with a non-contact state holding mechanism that forms a gap so that when a member other than the key is inserted into the key hole of the inner cylinder and rotational force is applied, the lower pin and the member other than the key are separated from each other to be in a non-contact state.,
    AboveAs a non-contact state holding mechanism, the lower pin is formed in a cylindrical shape, and an inclined surface is formed on a part of the lower pin.ShapeThe pin hole of the inner cylinder in which the lower pin is slidInIsForming the engaging partInsert a member other than the key into the key hole of the inner cylinder.On the inner cylinderWhen applying rotational force,The engagement part of the inner cylinder isBy pushing up the inclined surface of the lower pin, a gap is formed so that contact surfaces between the lower pin and members other than the key are in a non-contact state.likeHaveIt is characterized by.
[0008]
  Here, the member other than the key is a raw key (blank key) in which no key ridge is formed, and a member that can be created as a key that is the same as a normal key by duplicating the key KEY of the other key.
[0009]
  In addition, the non-contact state holding mechanism means that when a member other than the key is inserted into the key hole of the inner cylinder, and a rotational force is applied by swinging in the up / down / left / right directions, the member other than the key is in contact. If the parts are separated and do not come into contactGood.
[0010]
  For example, the lower pin as a non-contact state holding mechanism is formed in a cylindrical shape, and an inclined surface is formed on a part of the lower pin.ShapeThe pin hole of the inner cylinder in which the lower pin is slidInIsForming the engaging partInsert a member other than the key into the key hole of the inner cylinder.On the inner cylinderWhen applying rotational force,The engagement part of the inner cylinder isBy pushing up the inclined surface of the lower pin, a gap is formed so that contact surfaces between the lower pin and members other than the key are in a non-contact state.likeThenRuIn case, the inclined surface of the lower pin and the pin hole of the inner cylinderInThe time when the contact surfaces between the lower pin and the member other than the key are brought into a non-contact state by the formed engaging portion may be the first time when the member other than the key is inserted into the key hole and the rotational force is applied, Alternatively, it may be midway from the second time to the first time before the key pile of the regular key is completely copied.
[0011]
  As described above, the specific configuration for pushing up the lower pin by the rotational force of a member other than the key can be changed as appropriate depending on the correlation between the structure of the lower pin and the structure of the pin hole of the inner cylinder in addition to the above configuration. Is. In the present invention, as described above, the invention is not limited to the structure in which the lower pin is pushed up at the initial or midway when the rotational force is applied by a member other than the key, for example, the key Even if the lower pin is locked or held at an arbitrary position in the pin hole of the inner cylinder at any time during the duplication act by a member other than the member, even if it is configured to leave no trace of the lower pin on the contact surface of the member other than the key Well, optional.
[0012]
  In the non-contact state holding mechanism, in the pin cylinder lock having a plurality of groups of pins each composed of the upper pin and the lower pin, the contact surface of at least one lower pin is rotated by inserting a member other than the key into the key hole. Sometimes, the lower pin and a member other than the key are separated from each other to be in a non-contact state.
[0013]
[Example 1]
  A first embodiment of the present invention will be described below with reference to FIGS.
  As shown in FIGS. 1 and 2, the pin cylinder lock has pin holes 6a, 6b, 6c, 6d, 6e, 6f and an outer cylinder 1 having pin holes 2a, 2b, 2c, 2d, 2e, and 2f. An inner cylinder 5 having a key hole 8 is rotatably fitted, and upper pins 4a, 4b, 4c, 4d, 4e, which are biased toward the inner cylinder 5 by springs 3 ... 3 in the pin holes 2a to 2f, 4f, and lower pins 7a, 7b, 7c, 7d, 7e, and 7f are slidably fitted in the pin holes 6a to 6f, respectively.
[0014]
  As shown in FIG. 1, when the regular key K is inserted into the key hole 8 of the inner cylinder 5, the boundary lines 9a to 9f of the upper and lower pins 4a to 4f and 7a to 7f are connected to the outer cylinder 1 and the inner cylinder. The inner cylinder 5 can be rotated when it coincides with the share line L, which is a boundary line with 5, and the locking / unlocking member (not shown) is operated by the rotation of the inner cylinder so that it can be locked / unlocked. It is.
[0015]
  The lower pin group in the conventional pin cylinder lock is formed in a columnar shape like the lower pin 7b of the second column and the lower pin 7c of the third column in FIG. In addition, a member other than the key (such as a raw key (blank key)) BK is inserted into the keyhole, and the member BK other than the key is moved up and down while applying a force in the rotational direction of the inner cylinder in the state shown in FIG. If it turns in the direction many times, a trace due to the pressure contact of the lower pin is formed on the contact surface of the member BK other than the key. By scraping this trace with a file as described above, a key pile having the same height as the key piles K1 to K6 of the normal key K can be formed, and the same key as the normal key K is created from the member BK other than the key. There was a problem of being able to do it.
[0016]
  Therefore, in the present invention, when a member BK other than a key, such as a raw key (blank key) in which no key ridge is formed, is inserted into the key hole 8 of the inner cylinder 5 and rotational force is applied to the inner cylinder, A pin 7a, 7d, 7e, 7f and a member BK other than the key are provided with a non-contact state holding mechanism 10 that forms a gap so as to be in a non-contact state.
  In this case, when only the member BK other than the key is inserted into the key hole 8 of the inner cylinder 5, as shown in FIG. 2, the boundary lines 9a to 9f of the upper and lower pins 4a to 4f and 7a to 7f are Since it does not coincide with the share line L that is the boundary line between the outer cylinder 1 and the inner cylinder 5, the inner cylinder 5 cannot be rotated by a member BK other than the key.
[0017]
  The non-contact state holding mechanism 10 will be described in detail below.
  As shown in FIGS. 1 and 2, the non-contact state holding mechanism 10... 10 according to the first embodiment includes a lower pin 7a of the first column, a lower pin 7d of the fourth column, a lower pin 7e of the fifth column, It is provided at four locations of the lower pin 7f of the 6 columns, and the two locations of the lower pin 7b of the second column and the lower pin 7c of the third column are known conventional pins as described above.
[0018]
  Each of the four non-contact state holding mechanisms 10, 10, 10, 10 has the lower pins 7a, 7d, 7e, 7f formed in a cylindrical shape, and the lower pins 7a, 7d, 7e, 7f While forming a small-diameter step portion 11... 11 having inclined surfaces 12... 12 in part, pin holes 6 a, 6 d, 6 e, 6 f of the inner cylinder 5 in which the lower pins 7 a, 7 d, 7 e, 7 f are slid. When the member BK other than the key is inserted into the key hole 8 of the inner cylinder 5 and rotational force is applied to the inlet (opening on the inner cylinder side), the inclined surfaces 12 of the lower pins 7a, 7d, 7e, 7f. 12 is formed by engaging portions 15... 15 in which the contact surfaces 13 and 14 between the lower pins 7a, 7d, 7e and 7f and the member BK other than the key are in a non-contact state. Common. In this case, the engaging portions 15... 15 are located at the positions of the inlets (openings on the inner tube side) of the pin holes 6 a, 6 d, 6 e, 6 f of the inner tube 5 having a substantially funnel shape and below the large-diameter portion 16. Downhill inclined surface part is responsible.
[0019]
  Of the four non-contact state holding mechanisms 10 ... 10, the lower pin 7d of the fourth column and the lower pin 7e of the fifth column show the same mode, and the lower pin 7a of the first column and the lower pin 7e of the sixth column are the same. The pin 7f shows the same mode.
[0020]
  The lower pin 7e of the fifth column of the non-contact state holding mechanism 10 will be described below with reference to FIGS. 3 to 4 and FIG.
  In this case, the inclined surface 12 formed in the step portion 11 of the lower pin 7e and the engaging portion 15 formed in the inlets (openings on the inner cylinder side) of the lower pin holes 6e and 6d are shown in FIGS. As shown in the drawing, the member BK other than the key is inserted so as to be almost in contact with the key hole 8, and the contact surface 14 of the member BK other than the key and the contact surface 13 of the lower pin 7e are in contact with each other. is doing.
[0021]
  3 and 2, when a rotational force is applied to the member BK other than the key, the inner cylinder 5 is rotated and the engaging portion 15 of the inner cylinder 5 is inclined by the lower pin 7e as shown in FIG. The surface 12 is pushed up, and a clearance S is generated so that the contact surfaces 13 and 14 between the lower pin 7e and the member BK other than the key are in a non-contact state. Therefore, since the trace of the lower pin 7e does not remain on the contact surface 14 of the member BK other than the key, the trace portion cannot be shaved with a file or the like, and a key ring of a regular key cannot be created. Therefore, the duplicate key cannot be duplicated from a member other than the duplicate key.
  The same applies to the lower pin 7d of the fourth column.
  Thereby, at the initial point of time when the rotational force is applied by the member BK other than the key, the lower pins 7e and 7d are pushed up, and no trace is left on the contact surface 14 of the member BK other than the key.
[0022]
  The lower pin 7f of the sixth column of the non-contact state holding mechanism 10 will be described below with reference to FIGS.
  In this case, the inclined surface 12 formed in the step portion 11 of the lower pin 7f and the engaging portion 15 formed in the inlet (opening portion on the inner cylinder side) of the pin hole 6f of the inner cylinder 5 are shown in FIGS. As shown in FIG. 3, the member BK other than the key is inserted in the key hole 8 and is considerably separated from the case of FIGS. Therefore, in the state of FIGS. 6 and 2, when a rotational force is applied to the member BK other than the key, the large diameter portion 16 of the pin hole 6f of the inner cylinder 5 contacts the large diameter portion of the lower pin 7f. The pin 7f is sandwiched between the inner cylinder 5 and the outer cylinder 1 and fixed. Therefore, when the member BK other than the key is turned up and down with a rotational force applied, a trace of the lower pin 7f remains on the contact surface 14 of the member BK other than the key, and the trace can be shaved with a file or the like. . Next, FIG. 7 shows a state in which a member BK other than the key having a trace depth 20 formed by scraping the trace portion is inserted into the key hole 8. In this case, as shown in FIG. 7, the inclined surface 12 of the lower pin 7f and the engaging portion 15 at the entrance (opening portion on the inner cylinder side) of the pin hole 6f of the inner cylinder are close enough to contact each other. .
[0023]
  In the state of FIG. 7, when a rotational force is applied to the member BK other than the key, as shown in FIG. 8, the inner cylinder 5 is also rotated and the engaging portion 15 of the inner cylinder 5 pushes up the inclined surface 12 of the lower pin 7f. Thus, a gap S is generated by separating the contact surfaces 13 and 14 between the lower pin 7f and the member BK other than the combined key so as to be in a non-contact state. For this reason, since the trace of the lower pin 7f does not remain on the contact surface 14 of the member BK other than the key, the trace portion cannot be shaved with a file or the like, and a key ring of a regular key cannot be formed. Therefore, the duplicate key cannot be duplicated from a member other than the duplicate key.
[0024]
  The same applies to the lower pin 7a of the first column.
[0025]
  In the case of the sixth column of the non-contact state holding mechanism 10 (FIGS. 6 to 8), at least the first time when a member other than the key is inserted into the keyhole and rotational force is applied, Traces remain on the contact surface and duplication can be performed. However, after scraping the trace formed in the first time, in the middle of the second and subsequent replication of the rotational force application, the engagement portion 15 at the pin hole entrance (inner cylinder side opening) of the inner cylinder 5 is The lower pin 7f, 7a is pushed up by engaging with the inclined surface 12 formed in the step portion 11 of the pin hole 7f, 7a of the inner cylinder 5, and the lower pin and the contact surface 14 of the member BK other than the key are separated to form a gap. S is formed. For this reason, the duplication processing cannot be performed.
[0026]
  The non-contact state holding mechanism 10 is not limited to the above-described one. For example, the design of the non-contact state holding mechanism 10 can be appropriately changed by changing the shape of the step portion 11 of the lower pin or the vicinity of the inlet of the lower pin hole of the inner cylinder 5. is there. For example, the second and third embodiments shown in FIG. 9 and FIGS. 10 to 12 may be used.
[0027]
[Example 2]
  FIG. 9 shows a second embodiment of the present invention, which can be said to be a modification of the non-contact state holding mechanism 10 in FIGS. In FIG. 9, the inlets (openings on the inner cylinder side) of the pin holes 6a to 6f of the inner cylinder 5 do not form a counterbore having the large diameter part 16 as shown in FIG. A part of the cylindrical portion having the same diameter as the portion 16 is formed, and a step portion 11 having a small diameter formed on the lower pins 7a to 7f is formed on the upper portion as compared with FIG. The engagement portion 15 formed by the entrance edge of the pin hole of the inner cylinder 5 is brought close to the engagement portion 15 as shown in FIG. 3 in a state where the member BK other than the key is inserted into the key hole 8, When the rotational force is applied to the other member BK, the inner cylinder 5 is also rotated as shown in FIG. 9, and the engaging portion 15 is engaged with the inclined surface 12 of the lower pin and pushed up. The contact surfaces 13 and 14 are separated from each other so as to be in a non-contact state, and a gap S is generated. Since not remain traces of lower pin, Figure 4, can not make Kagiyama the duplicate key when similarly normalized in FIG.
[0028]
[Example 3]
  10 to 12 show a third embodiment of the present invention, which has both the functions of the non-contact state holding mechanism 10 of FIGS. 3 to 5 and FIGS. 6 to 8. That is, in the case of FIG. 10 to FIG. 12, two stepped portions 11, 11 are formed on the lower pins 7 a to 7 f to provide two inclined surfaces 12, 12, and the lower inclined surface 12 and the pin of the inner cylinder 5 are provided. The engagement portion 15 formed in the counterbore of the inlets (openings on the inner cylinder side) of the holes 6a to 6f is almost in a state where a member BK other than the key is inserted into the key hole 8, as shown in FIG. The upper inclined surface 12 and the engaging portion 15 are considerably separated from each other in the state shown in FIG.
[0029]
  When a member other than the key (raw key) BK is inserted into the keyhole 8 and no rotational force is applied, when the rotational force is applied to the member BK other than the key, the inner cylinder 5 also rotates as in FIG. Then, the engaging portion 15 of the inner cylinder 5 pushes up the inclined surface 12 at the upper part of the lower pins 7a to 7f, and the contact surfaces 13 and 14 between the lower pins 7a to 7f and the member BK other than the key are in a non-contact state. A gap S is generated so as to be separated. For this reason, since the traces of the lower pins 7a to 7f are not left on the contact surface 14 of the member BK other than the key combination, the trace portion cannot be shaved with a file or the like, and a key ring of a regular key combination cannot be formed. Therefore, the duplicate key cannot be duplicated from a member other than the duplicate key. Thereby, at the initial time point when the rotational force is applied by the member BK other than the key, the lower pin is pushed up so that no trace is left on the contact surface 14 of the member BK other than the key.
[0030]
  In the state of FIG. 11, when a rotational force is applied to the member BK other than the key, as shown in FIG. 12, the inner cylinder 5 is also rotated so that the engaging portion 15 of the inner cylinder 5 becomes the inclined surface 12 above the lower pin. , And the contact surfaces 13 and 14 of the member BK other than the lower pin and the key are separated so that they are not in contact with each other, and a gap S is generated. Therefore, since the trace of the lower pin does not remain on the contact surface 14 of the member BK other than the key, the trace portion cannot be shaved with a file or the like, and a key ring of a regular key cannot be created. Therefore, the duplicate key cannot be duplicated from a member other than the duplicate key.
[0031]
[Example 4]
  A fourth embodiment of the present invention will be described below with reference to FIGS.
  In this pin cylinder lock, a group of pins consisting of upper and lower pins is arranged in three columns in the upper, left and right directions, and the key K is a dimple-shaped key pile in the vertical and horizontal directions as shown in FIGS. .. Are characterized in that K10 to K16... Are formed, and the principle of locking and unlocking with the combined key K is the same as in the first embodiment.
[0032]
  The pin cylinder lock is configured such that the inner cylinder 5 is rotatably fitted to the outer cylinder 1, and the pin holes 2 h, 2 i, 2 j, 2 k, 2 l, 2 m, 2 p are formed in the outer cylinder 1 in three directions, upper, left and right. 2q and 2r are formed, and the upper pins 4h, 4i, 4j, 4k, 4l, 4m, 4p, 4q, and 4r that are urged toward the inner cylinder 5 by the springs 3 ... 3 are slid into the pin holes 2h to 2r. It is movably fitted. Further, the inner cylinder 5 has pin holes 6h, 6i, 6j, 6k, 6l, 6m, 6p, 6q of the inner cylinder 5 penetrating through the pin holes 2h to 2r of the outer cylinder 1 in three directions of upper, left and right. 6r is formed, and the lower pins 7h, 7i, 7j, 7k, 7l, 7m, 7p, 7q, 7r are slidably fitted in the pin holes 6h to 6r of the inner cylinder 5, and the keyhole 8 Is forming.
  In the fourth embodiment, three columns in each of the upper, left, and right directions are formed, but the number of columns may be four or more and is arbitrary.
[0033]
  As shown in FIGS. 13 and 14, when a normal combined key K as shown in FIG. 15 is inserted into the key hole 8 of the inner cylinder 5, the boundary lines 9 h to 4 h to 4 r and 7 h to 7 r The inner cylinder 5 can be rotated when 9r coincides with the share line L which is a boundary line between the outer cylinder 1 and the inner cylinder 5, and the locking / unlocking member (not shown) is operated by the rotation of the inner cylinder 5. It can be locked and unlocked.
[0034]
  In the fourth embodiment, the inlets (openings on the inner cylinder side) of the pin holes 6h to 6r of the inner cylinder 5 into which the lower pins are inserted are the large-diameter portions 16 as in the first embodiment of FIGS. The lower pins 7i, 7j, 7k, and 7q are of a conventional shape and are not provided with measures for preventing duplication of the combined key. The lower pins 7h, 7l, 7m, 7p, 7r is a case where a member BK other than a key, such as a raw key (blank key) in which no key ridge is formed, is inserted into the key hole 8 of the inner cylinder 5 and rolled up and down while applying a rotational force to the inner cylinder. The lower pins 7h, 7l, 7m, 7p, 7r and the members BK other than the key are separated from each other to form a non-contact state holding mechanism 10, and the duplication of the key is prevented. Measures are taken.
[0035]
  Each of the lower pins 7h, 7l, 7m, 7p, and 7r for which the duplicate key prevention measures are taken has two stepped portions 11 and 11 and two inclined surfaces 12 and 12 formed. Common in some respects.
[0036]
  However, among the lower pins, the lower pins 7h, 7m, and 7p are similar to the lower pins 7d and 7e of the first embodiment when the member BK other than the key is inserted into the key hole 8, and The contact hole 15 is formed so as to be almost in contact with the engagement part 15 formed in the counterbore of the inlets (openings on the inner cylinder side) of the pin holes 6h, 6m, and 6p of the inner cylinder 5, and is kept in a non-contact state. The mechanism 10 operates in the same manner as the lower pins 7d and 7e of the first embodiment.
[0037]
  Similarly to the lower pins 7a and 7f of the first embodiment, the lower pins 7l and 7r have the upper inclined surface 12 and the pin holes 6l and 6r of the inner cylinder 5 in a state where a member BK other than the key is inserted into the key hole 8. The engagement portion 15 formed in the counterbore of the entrance (opening portion on the inner cylinder side) of the first contact is considerably separated, and the non-contact state holding mechanism 10 operates in the same manner as the lower pins 7a and 7f of the first embodiment. To do.
[0038]
  In this case, in a state where only the member BK other than the key is inserted into the key hole 8 of the inner cylinder 5, as shown in FIGS. 16 to 18, the upper and lower pins 4h to which at least measures for preventing duplication of the key are taken. Since the boundary lines 9h to 9r of 4r and 7h to 7r do not coincide with the share line L that is the boundary line between the outer cylinder 1 and the inner cylinder 5, the inner cylinder 5 is rotated by the member BK other than the key. It is not possible.
[0039]
  16 to 18, when the member BK other than the key is rotated, as shown in FIG. 19, the lower pins 7h, 7m, and 7p corresponding to the lower pins of the first embodiment are the lower pins of the first embodiment. 7d and 7e are operated in the same manner, and the traces of the lower pins 7h, 7m, and 7p are not left on the contact surface 14 of the member BK other than the key, so that the trace portion cannot be shaved with a file or the like. I can't make Kagiyama. Therefore, the duplicate key cannot be duplicated from a member other than the duplicate key.
[0040]
  On the other hand, the lower pins 7l and 7r corresponding to the lower pins 7a and 7f of the first embodiment apply rotational force by inserting a member BK other than the key into the keyhole 8 as in FIGS. 6 to 8 of the first embodiment. At least for the first time, a trace remains on the contact surface of the member other than the key and the duplication can be performed. However, the replication process cannot be performed during the second or subsequent replication process of applying the rotational force (see FIG. 19). Therefore, the trace portion cannot be cut with a file or the like, and a key pile of a regular key cannot be created. Therefore, the key cannot be duplicated from a member other than the key.
[0041]
  FIG. 19 shows a state in which a member BK other than the key having a depth of 20 formed by scraping a trace portion on the contact surface 14 of the member BK other than the key is inserted into the inner cylinder 5, and each lower pin 7h. , 7l, 7p and the contact surfaces 13, 14 of the member BK other than the key are separated so that the contact surfaces 13 and 14 are not in contact with each other, and a gap S is generated.
[0042]
[Modifications]
  In the present invention, an upper pin and a lower pin are used as a set, and a plurality of sets of pins (columns) are arranged in a line perpendicular to the axial direction of the inner cylinder and the outer cylinder as in the first embodiment. Thus, the present invention is not limited to those arranged in three rows in the direction perpendicular to the axial direction of the inner cylinder and the outer cylinder, and can also be applied to those arranged in two rows or four rows. Further, the number of the plurality of sets of pin groups (columns) is arbitrary.
[0043]
  The non-contact state holding mechanism 10 may be provided on at least one lower pin of a plurality of sets of pin groups (columns), but may be two or more, or may be provided on all lower pins.
[0044]
  The position where the engaging portion 15 engages with the inclined surface 12 to prevent the corresponding lower pin from moving downward may be designed in consideration of the depth of the key pile of the proper key K or the like.
[0045]
【The invention's effect】
  According to the pin cylinder lock of the first aspect, when a member other than the key is inserted into the key hole of the inner cylinder and a rotational force is applied, the lower pin and the member other than the key are separated so as to be in a non-contact state. Since there is a non-contact state holding mechanism for forming a mark, it is not possible to form a trace due to pressure contact with the lower pin on the contact surface of a member other than the key by rotating a member other than the key. Therefore, a pin-cylinder lock excellent in crime prevention can be provided without duplicating a regular key from the member.
  More specifically, in the present invention, as the non-contact state holding mechanism, the lower pin is formed in a cylindrical shape, and an inclined surface is formed on a part of the lower pin, while the lower pin slides. An engaging portion is formed in the pin hole of the inner cylinder, and when the member other than the key is inserted into the key hole of the inner cylinder and rotational force is applied to the inner cylinder, the engaging portion of the inner cylinder The inclined surface is pushed up to form a gap so that the contact surfaces between the lower pin and the members other than the key are in a non-contact state. That meansSince the inclined surface formed in a part of the lower pin and the engaging portion formed in the pin hole of the inner cylinder constitute a non-contact state holding mechanism, the shape of the lower pin and the shape of the pin hole of the inner cylinder Since a non-contact state holding mechanism can be created simply by devising, no special member is required and the structure is simple.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an entire pin cylinder lock in a state in which a joint key is inserted into a keyhole, showing Embodiment 1 of the present invention.
FIG. 2 is a longitudinal sectional view of the entire pin cylinder lock in a state in which a member (raw key) other than a key is inserted into a key hole in Embodiment 1 of the present invention.
FIG. 3 is a longitudinal sectional view showing a fifth column in FIG. 2 in which members other than the key (raw key) are not rotated.
4 is a longitudinal sectional view showing a state in which a member other than the key (raw key) is rotated from the state of FIG. 3 and a contact surface of the member other than the key (raw key) is not in contact with the lower pin.
FIG. 5 is a longitudinal sectional view showing a fourth column of FIG. 2 in which a member other than the key (raw key) is rotated and a contact surface of the member other than the key (raw key) is not in contact with the lower pin. is there.
FIG. 6 is a longitudinal sectional view showing a sixth column in FIG. 2 in which members (raw keys) other than the combined key are not rotated.
FIG. 7 shows the state of FIG. 6 after cutting the trace of the lower pin generated on the contact surface of the member other than the key (raw key), and then inserting the member other than the key (raw key) into the key hole to give a rotational force. It is a longitudinal cross-sectional view of the 6th column in the state which is not.
8 is a longitudinal sectional view showing a state in which a member (raw key) other than the key is rotated from the state of FIG. 7 and a contact surface of the member (raw key) other than the key is not in contact with the lower pin.
FIG. 9 is a longitudinal sectional view of Embodiment 2 of the present invention.
FIG. 10 is a longitudinal sectional view showing a state where a member other than a key (raw key) is inserted into a key hole and no rotational force is applied in Embodiment 3 of the present invention.
11 is a longitudinal sectional view showing a state in which a trace generated after rotating a member other than the key (raw key) in FIG. 10 is cut and a member other than the key is reinserted into the key hole.
12 is a longitudinal sectional view showing a state in which a member (raw key) other than the key is rotated in the state of FIG.
FIG. 13 is a horizontal sectional view of the whole pin cylinder lock in a state in which a regular key is inserted into the keyhole, showing Embodiment 4 of the present invention.
14 is a cross-sectional view taken along line AA in FIG.
FIG. 15 is a front view of a regular key in Example 4 of the present invention.
FIG. 16 is a longitudinal sectional view of an entire pin cylinder lock in a state where a member (raw key) other than a key is inserted into a key hole in Embodiment 4 of the present invention.
FIG. 17 is an overall horizontal sectional view of a pin cylinder lock in a state in which a member (raw key) other than a key is inserted into a key hole in Embodiment 4 of the present invention.
18 is a cross-sectional view taken along line BB in FIG.
19 is a longitudinal sectional view showing a state in which a member (raw key) other than the key is rotated from the state of FIG. 18 and a contact surface of the member (raw key) other than the key is not in contact with the lower pin.
[Explanation of symbols]
  1 outer cylinder
  2a ~ 2f Pin hole
  2h, 2i, 2j, 2k, 2l, 2m, 2p, 2q, 2r pin hole
  3 Spring
  4a-4f Upper pin
  4h, 4i, 4j, 4k, 4l, 4m, 4p, 4q, 4r Upper pin
  5 inner cylinder
  6a-6f Pin hole
  6h, 6i, 6j, 6k, 6l, 6m, 6p, 6q, 6r Pin hole
  7a-7f Lower pin
  7h, 7i, 7j, 7k, 7l, 7m, 7p, 7q, 7r Lower pin
  8 Keyhole
  9a to 9f Boundary line between upper and lower pins
  9h, 9i, 9j, 9k, 9l, 9m, 9p, 9q, 9r Borderline between upper and lower pins
  10 Non-contact state holding mechanism
  11 Steps
  12 Inclined surface
  13 Contact surface
  14 Contact surface
  15 Engagement part
  20 Trace depth
  K key
  Members other than BK key (raw key)
  L share line
  S clearance

Claims

ピン孔を有する外筒にピン孔と鍵穴とを有する内筒を回動自在に嵌装し、前記外筒のピン孔にバネで内筒側へ付勢した上ピンを、内筒のピン孔に下ピンをそれぞれ摺動可能に嵌装し、この上下両ピンの境界線が外筒と内筒との境界線であるシェアラインに一致するときに内筒の回動を可能としたピンシリンダー錠において、
前記内筒の鍵穴に合鍵以外の部材を差し込んで回転力を付与したときに、下ピンと合鍵以外の部材とは離間して非接触状態となるように隙間を形成する非接触状態保持機構を設け、
前記非接触状態保持機構として、下ピンは、円柱状に形成して、その下ピンの一部に傾斜面を形成する一方、該下ピンが摺動される内筒のピン孔には係合部を形成し、合鍵以外の部材を内筒の鍵穴に差し込んで内筒に回転力を付与した時に、該内筒の係合部が前記下ピンの傾斜面を押し上げて、下ピンと合鍵以外の部材との接触面同士が非接触状態となるように隙間を形成するようにしてあることを特徴とするピンシリンダー錠。An inner cylinder having a pin hole and a key hole is rotatably fitted to an outer cylinder having a pin hole, and an upper pin biased toward the inner cylinder side by a spring in the pin hole of the outer cylinder is inserted into the pin hole of the inner cylinder. A pin cylinder that allows the inner cylinder to rotate when the lower pin is slidably fitted to the upper and lower pins and the boundary line between the upper and lower pins coincides with the shear line that is the boundary line between the outer cylinder and the inner cylinder In the lock,
Provided with a non-contact state holding mechanism for forming a gap so that a member other than the key is inserted into the key hole of the inner cylinder and a rotational force is applied, so that the member other than the key is separated from the lower pin and is in a non-contact state. ,
As the non-contact state holding mechanism, the lower pin is formed in a cylindrical shape, whereas that form the inclined surface portion of the lower pin, engaged in the pin holes in the cylinder lower pin is slid When a member other than the key is formed and a member other than the key is inserted into the key hole of the inner cylinder and rotational force is applied to the inner cylinder, the engaging portion of the inner cylinder pushes up the inclined surface of the lower pin, pin cylinder lock, characterized in that the contact surfaces of the members are are so as to form a gap so that the non-contact state.