JP2004137769A - Structure of crime prevention thumb-turn - Google Patents

Structure of crime prevention thumb-turn Download PDF

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Publication number
JP2004137769A
JP2004137769A JP2002303816A JP2002303816A JP2004137769A JP 2004137769 A JP2004137769 A JP 2004137769A JP 2002303816 A JP2002303816 A JP 2002303816A JP 2002303816 A JP2002303816 A JP 2002303816A JP 2004137769 A JP2004137769 A JP 2004137769A
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JP
Japan
Prior art keywords
turn
thumb
rotating disk
security
knob
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JP2002303816A
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JP4181844B2 (en
Inventor
Akira Katayama
片山 章
Mikio Hiyoudo
兵道 幹男
Manabu Mori
森 学
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Miwa Lock KK
Miwa Lock Co Ltd
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Miwa Lock KK
Miwa Lock Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent illegal rotation operation of a thumb-turn by a wire. <P>SOLUTION: This structure of a crime prevention thumb-turn covering a knob 31 of the existing thumb-turn 23 is provided with a turn disc 51 having a fitting hole 51a in for inserting the knob 31, fixing the knob 31 inserted into the fitting hole 51a by a fixing means 53, and attached surrounding the knob 31, and a locking shaft 55 which is attached and fixed to a front face 51c of the turn disc 51 having a flange part 55a. This structure of the crime prevention thumb-turn is provided with a racing member 57 formed like a bowl covering the turn disc 51 on a recessed inner face of a curved face 57a from the front face 51c, is turnably supported on the locking shaft 55, and has a window part 57b restricted from pulling out of the locking shaft 55 by the flange part 55a and exposing a peripheral fringe 51k of the turn disc 51, and a cover member 69 formed like a bowl covering the outer periphery from a front face of the racing member 57 together with the turn disc 51 and detachably attached to the racing member 57 through a stopper member 71. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、扉の施解錠操作に用いられる防犯サムターンの構造に関するものである。
【0002】
【従来の技術】
例えば扉に設けられる施錠装置は、屋外側に表出させたシリンダー錠の鍵孔に、合鍵(キー)を挿入して回動操作することにより、扉の木口より進退させたデッドボルトを扉枠に設けたストライクに係合・係合解除して施解錠を行うとともに、屋内側からは、サムターンの摘みを回動操作するのみで、デッドボルトを進退させて、扉の施解錠を簡便に行えるようにしている。
【0003】
ところが、近年、ポスト口や、機械工具によって開けた小さな穴から針金等を挿入し、回転操作の容易なサムターンに係止して回転させ、施錠装置を解錠する不正解錠が増えている。このようなサムターンに針金等を係止して回転させることを防止するものに例えば下記特許文献1に開示されるサムターン用防犯カバーがある。
【0004】
この防犯カバー1は、図7,図8に示すように、サムターン2が嵌入する嵌入孔3が形成されているとともに、回転時に円状軌跡2bを描くサムターン2の外面2aを覆う部分が、円状軌跡に沿う円形状に形成されている。そして、嵌入孔3内に螺入してサムターン2の側面に当接し、両側から挟持するセットスクリュー4,4が設けられている。
このような構成からなる防犯カバー1は、嵌入孔3にサムターン2を挿入することで、サムターン2に防犯カバー1を覆うように被せる。その後セットスクリュー4,4を螺入させて締め付けることで、防犯カバー1をサムターン2に固定する。従って、サムターン2に被せた防犯カバー1によって、針金等を係止させて回転させることが難しくなる。
【0005】
また、上記した防犯カバーの別態様として、図9に示すように、防犯カバー1を、取付部5及び本体部6から構成したものが開示されている。取付部5は、上記の防犯カバー1の外形を手での操作が容易となるように形成し、本体部6が係止する係止突部5aを設けている。取付部5は、サムターン2に被せた状態で、サムターン2を容易に回転させることができる。また、本体部6は、係止突部5aに係止可能な係止部6aを有している。このようにすることで、係止作業という簡単な作業で、防犯カバー1の着脱が行える。さらに係止部6aで本体部6が空転することにより、針金等を係止させて回転させることが不可能となる。
【0006】
さらに、上記した防犯カバーの別態様として、図10に示すように、係止部6a内に、係止突部5aとの間にバネ部材8を設け、本体部6側の外周縁に複数の係合凹部5bと、この係合凹部5bに係合可能な係合凸部6bとを設けたものが開示されている。
このような構成とすれば、本体部6を常に取り付けたままとしておくことができる。すなわち、常時は係止突部5aと係止部6aとで本体部6が空転し、サムターン2を回転させたいときは、本体部6を手で押圧し、係合凸部6bを取付部5の係合凹部5bに係合させ、この係合状態のまま本体部6を回転させることにより、サムターン2を回転させることができた。
【0007】
【特許文献1】
実公平4−40362号公報
【0008】
【発明が解決しようとする課題】
しかしながら、図7,図8に示された防犯カバーは、外形が円筒体形状であるため、サムターンに被せた場合、本来小判形状であることからその回転位置によって視認できたサムターンの施錠状態又は非施錠状態を視認不能にしてしまい、施解錠の操作性を低下させる問題があった。
【0009】
また、図9に示された防犯カバーは、サムターンを回転操作可能にする取付部と、この取付部に対し空転しかつ着脱可能となる本体部とから構成されており、簡素な係止構造であることから、取付部に対して本体部が簡単に引き抜けてしまう欠点があった。
【0010】
さらに、図10に示された防犯カバーは、本体部を常に取り付けたままとできるが、サムターンの回転操作時には本体部を手で押圧しながら回転させなければならないため、操作性を低下させた。
【0011】
本発明は上記状況に鑑みてなされたもので、その第一の目的は、針金や棒等によるサムターンの回転を阻止できるとともに、従来同様の回転のみによる操作を可能とし、かつ、サムターンの不使用時には、回転操作を不可能とする防犯サムターンの構造を提供し、もって、防犯性、操作性の向上を図ることにある。また、その第二の目的は、サムターンの回転位置が容易に視認できる防犯サムターンの構造を提供し、もって、操作性の向上を図ることにある。
【0012】
【課題を解決するための手段】
次に、上記の課題を解決するための手段を、実施の形態に対応する図面を参照して説明する。
この発明の請求項1記載の防犯サムターンの構造は、扉25の屋内面25aに取り付けられた既存サムターン23の摘み31を覆う防犯サムターンの構造であって、
前記摘み31を挿入する嵌入穴51aを後面51bに有し該嵌入穴51aに挿入した前記摘み31を固着手段53によって固定して前記摘み31を包囲して被着される回動円板51と、
該回動円板51の前面51cに取り付け固定され前端面にフランジ部55aを有した止軸55と、
湾曲面57aの凹状内面で前記回動円板51を前面51cから覆う碗状に形成され前記止軸55に回動自在に支持されるとともに前記フランジ部55aによって前記止軸55からの抜脱が規制され且つ前記回動円板51の周縁51kを表出させる窓部57bを有した空転部材57と、
前記回動円板51とともに前記空転部材57の前面から外周を覆う碗状に形成され、係脱機構71を介して前記空転部材57に脱着自在に取り付けられるカバー部材69と、
を具備したことを特徴とする。
【0013】
この防犯サムターンの構造では、既存サムターン23の摘み31が回動円板51によって覆われ、また、回動円板51には、回動円板51の一部を表出する空転部材57が被される。さらにこれら回動円板51と空転部材57とはカバー部材69にてその外周を覆われることとなる。従って、針金や棒等を用いても、カバー部材69の表面を滑ることとなり、また、カバー部材69が空転部材57とともに空回りし、摘み31への回転力を伝達しない。そして、サムターンの操作を行うには、係脱機構71を操作し、空転部材57からカバー部材69を取り外し、空転部材57とともに窓部57bから表出した回動円板51を摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。なお、サムターンの操作終了後、カバー部材69は空転部材57に取り付けられる。
【0014】
請求項2記載の防犯サムターンの構造は、請求項1記載の防犯サムターンの構造において、
前記止軸55の先端面に、回転位置表示手段55dが設けられたことを特徴とする。
【0015】
この防犯サムターンの構造では、回動円板51に覆われることで視認できなくなった摘み31の回転位置が、回転位置表示手段55dを介して知ることができ、カバー部材69を外した状態でのサムターン操作時における施錠及び解除の操作性が向上する。
【0016】
請求項3記載の防犯サムターンの構造は、扉25の屋内面25aに位置し、錠機構部内に回動操作力を入力するサムターン軸83を備える防犯サムターンの構造であって、
前記サムターン軸83に設けられ、該サムターン軸83とともに回動する略フランジ状の回動円板85と、
該回動円板85の前面及び後面に配置され、該回動円板85を挟んで連結されて、前記サムターン軸83に回動自在に支持されるとともに、前記回動円板85の周縁85aを表出させる窓部87aを有した空転部材87と、
前記回動円板85とともに前記空転部材87の前面から外周を覆う碗状に形成され、係脱機構71を介して前記空転部材87に脱着自在に取り付けられるカバー部材69と、
を具備したことを特徴とする。
【0017】
この防犯サムターンの構造では、サムターン軸83に回動円板85が設けられ、この回動円板85には、回動円板85の一部を表出する空転部材87が被される。さらにこれら回動円板85と空転部材87とはカバー部材69にてその外周を覆われることとなる。従って、針金や棒等を用いても、カバー部材69の表面を滑り、また、カバー部材69が空転部材87とともに空回りすることとなり、サムターン軸83への回転力を伝達しない。そして、サムターンの操作を行うには、係脱機構71を操作し、空転部材87からカバー部材69を取り外し、空転部材87とともに窓部87aから表出した回動円板85を摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。なお、サムターンの操作終了後、カバー部材69は空転部材87に取り付けられる。
【0018】
請求項4記載の防犯サムターンの構造は、請求項3記載の防犯サムターンの構造において、
前記サムターン軸83の先端面に、回転位置表示手段84が設けられたことを特徴とする。
【0019】
この防犯サムターンの構造では、サムターン軸83の回転位置が、回転位置表示手段84を介して知ることができ、カバー部材69を外した状態でのサムターン操作時における施錠及び解除の操作性が向上する。
【0020】
【発明の実施の形態】
以下、本発明に係る防犯サムターンの構造の好適な実施の形態を図面を参照して詳細に説明する。
なお、以下に説明する防犯サムターンの構造では、扉の屋内面に既に配設されている既存サムターンに対して、防犯サムターンを構成させる例として説明する。
図1は本発明に係る防犯サムターンの構造を既存サムターンとともに表した縦断面図、図2は図1に示した防犯サムターンの構造の分解斜視図である。
【0021】
まず、本実施の形態による防犯サムターンの構造の説明に先立ち、防犯サムターン21によって覆われることとなる既存サムターン23について説明する。
図1に示すように、扉25には図示しない錠箱が設けられ、この錠箱にはラッチボルト,デッドボルト,及びこれらを扉25の木口から進退させる錠箱機構部を内設している。
扉25は屋内側の面である屋内面25aに既存サムターン23を突設している。上記した錠箱のデッドボルトは、扉25の屋外側の面に設けたシリンダー錠をキーによって、又はこの既存サムターン23の摘み31を回動することによって扉25の木口から進退可能となる。
【0022】
既存サムターン23は、筒状支持部27と、筒状支持部27に嵌挿されるサムターン軸29と、サムターン軸29と相対回転不能に連結、若しくはこのサムターン軸29と一体に形成される摘み31と、筒状支持部27の先端部に外嵌される飾り筒33と、飾り筒33に外嵌され、筒状支持部27に外挿されたコイルバネ35によって屋内面25aに押付けられる略円錐形状の化粧リング37とを主要な構成部材として有している。
【0023】
筒状支持部27は、略円筒形に形成されている。筒状支持部27の後端部27aには、軸線に直交方向の一対の凸部39,39が外周の上下に設けられている。これら凸部39,39には固定穴41が形成されている。筒状支持部27の後端部は、屋内面25aに穿設した挿入穴25bに挿入され、扉25内に設けた図示しない錠箱にこの固定穴41を介して固定される。これにより、筒状支持部27は、錠箱に回動不能に固定され、この錠箱を介して扉25の屋内面25a側に固設されることになる。
【0024】
筒状支持部27の先端は、屋内面25aより突出し、その外周には、先端側を切除した略円錐状の化粧リング37を、先端部が筒状支持部27の先端となるように取り付けている。また、筒状支持部27の先端には、飾り筒33が設けられ、筒状支持部27の先端面を覆っている。
【0025】
サムターン軸29は、基端部が断面十字形状の入力部43となり、この入力部43が図示しない錠箱機構部の入力軸に相対回転不能に嵌入される。サムターン軸29は、筒状支持部27に挿通支持され、図示しないEリングなどの移動規制部材が取り付けられて、筒状支持部27に対して抜脱が規制され、回動自在に支持される。サムターン軸29の先端部は、飾り筒33の先端面から突出する摘み31に相対回転不能に連結される。従って、既存サムターン23は、摘み31が回動されることで、サムターン軸29を介して入力部43により錠箱機構部内が操作され、デッドボルトが扉25の木口から進退するようになっている。
【0026】
本実施の形態による防犯サムターン21は、この既存サムターン23に取り付けることができる。
防犯サムターン21は、摘み31を挿入する嵌入穴51aを後面51bに有し嵌入穴51aに挿入した摘み31を固着手段53によって固定して摘み31を包囲して被着される回動円板51と、回動円板51の前面51cに取り付け固定され前端面にフランジ部55aを有した止軸55と、湾曲面57aの反対側の面となる凹状内面で回動円板51を前面51cから覆う碗状に形成され止軸55に回動自在に支持されるとともにフランジ部55aによって止軸55からの抜脱が規制され、かつ回動円板51の周縁51kを表出させる窓部57bを有した空転部材57と、回動円板51とともに空転部材57の前面から外周を覆う碗状に形成され、係脱機構71を介して空転部材57に脱着自在に取り付けられるカバー部材69とを備えている。
【0027】
回動円板51は、後面51b側の大径部51dの前面に、小径部51eを同軸上に形成することで、段部51fを有している。大径部51dの側面には半径方向に固着手段53であるネジ孔51gが形成され、ネジ孔51gは嵌入穴51aに通じている。このネジ孔51gには固着手段53である固定用ネジ61が螺合される。すなわち、回動円板51は、嵌入穴51aに摘み31を挿入し、ネジ孔51gに螺合した固定用ネジ61を締め付けることで、固定用ネジ61の先端を摘み31に圧接して摘み31に取り付け固定できるようになっている。つまり、回動円板51は、摘み31と一体回転するように取り付けられる。
【0028】
回動円板51の前面51c略中央には凹部51hが形成され、凹部51hには止軸55の基端55bが嵌入される。また、回動円板51の後面51bから凹部51hには固定穴51jが貫通し穿設されている。一方、止軸55にはネジ孔55cが軸線方向に形成されている。止軸55は、この固定穴51jに挿通したビス52を止軸55のネジ孔55cに螺合することで、基端55bを凹部51hに嵌合して取り付け固定される。
【0029】
この止軸55のフランジ部55aには回転位置表示手段55dが設けられている。回転位置表示手段55dは、微小な凹凸による標示、印刷や刻印、あるいは部分的な着色による色分け等とされている。例えば、図2に示すように、解錠時では回転位置表示手段55dは縦長状とされており、施錠する場合、時計回り方向に回動円板51を90度回転させると、横長状となり、解錠時と施錠時とが識別可能となっている。
【0030】
空転部材57は、中央部に止軸55の挿通される貫通穴63を有している。空転部材57は、碗部57cの湾曲面57aから突出して、貫通穴63から曲面に沿って放射状に延在する複数、本実施の形態では4つの凸条部65を有している。凸条部65は、碗部57cの裾から延出している。
【0031】
空転部材57の凸条部65は、回動円板51の大径部51dの外側となり、延出先端を、化粧リング37の周囲に配置する。凸条部65の碗部57cの内側には段部65aが形成されている。この段部65aは、回動円板51の段部51fと組み合わさるようになっている。この状態で、空転部材57は止軸55に対して回転自在となる。従って、空転部材57は、回動円板51に対して相対回転自在に保持される。空転部材57は、凸条部65同士の間隙が窓部57bとなっている。この窓部57bからは、回動円板51の周縁51kが表出するようになっている。
なお、空転部材57の凸条部65の外側面には、後述する係脱機構71に係る凹溝67が形成される。この実施の形態では、4つの凸条部65のうち対向位置となる2つにそれぞれ形成されるが、各凸条部65に形成されても良い。
【0032】
従って、回動円板51には回動円板51と止軸55とが組み付けられ、回動円板51が固着手段53によって摘み31に取り付け固定されることになる。
【0033】
カバー部材69は、図2に示すように、外周面の形状が、好ましくは曲面で形成されており、また内周面には空転部材57の各凸条部65が嵌入される凹条69aが形成される。カバー部材69の基端側の外周面に略蒲鉾状の一対の突条70が軸線方向に沿って突出形成されている。各突条70は、中心軸線に対し180度の位置である互いに外方向となる位置に形成される。また、各突条70を直交して、外周面には周方向に沿って取付溝72がそれぞれ形成されている。各突条70には、軸線方向である長手方向に挿入孔70aが形成される。各取付溝72には、カバー部材69の側壁を貫通する透孔73が穿設される。そして、これら取付溝72には、それぞれ係脱機構としてのストッパ部材71が配設される。
【0034】
各ストッパ部材71は、図2,3に示すように、中途に軸孔71aが穿設され、先端に係止爪71bを有している。また、このストッパ部材71には中途から斜めに延設される付勢部71cを有している。このストッパ部材71は、カバー部材69の取付溝72内に、係止爪71b及び付勢部71cが位置し、取付溝底部に付勢部71cが当接状態で配設され、軸孔71aを貫通して突条70の挿入孔70aに挿着されるピン75にて揺動自在に取り付けられる。ストッパ部材71は、図3に示すように、基端の操作部71dが、カバー部材69の外側面より突出する。なお、このストッパ部材71は、可撓性を有するポリアセタール樹脂などで構成される。
【0035】
従って、このカバー部材69は、回動円板51とともに空転部材57の前面から外周を覆うように取り付けられ、各ストッパ部材71の係止爪71bが、空転部材57の凸条部65の凹溝67に嵌入し、カバー部材69と空転部材57とが略一体となって、防犯サムターン21全体が摘み31に取り付けられる。
【0036】
次に本実施の形態の動作について説明する。
まず、屋内側から施錠する場合について説明する。
操作者は、カバー部材69を取り外す。図4に示すように、カバー部材69の外側面から突出している各ストッパ部材71の操作部71dを同時に、それぞれの付勢部71cの付勢力に抗して揺動させる。そして、係止爪71bを凹溝67から後退させ互いの係合状態を解き、そのままカバー部材69とともに空転部材57から引き離し取り外す。
【0037】
次に、操作者は、窓部57bから表出している回動円板51の周縁51kを摘む。このとき、摘んだ手指は、空転部材57も同時に摘むこととなっても良い。
【0038】
摘んだ手を捻って回動円板51を例えば時計回りに回転させると、摘み31もそれに伴って回動する。そして、例えば90度回動されると、サムターン軸29の入力部43により錠箱機構部内が操作され、デッドボルトが扉25の木口に進出する。
【0039】
これにより屋内側から扉25が施錠される。このとき、止軸55のフランジ部55aの回転位置表示手段55dは横長になっており、屋内側から施錠されていることが視認される。
【0040】
なお、回動円板51の周縁51kを摘んだ指が回動円板51の回動に伴って凸条部65の側部に当接し、これによって、空転部材57は回動円板51と同方向に回転する。
【0041】
施錠操作を終えたら、カバー部材69を取り付ける。この取り付けは、カバー部材69を各ストッパ部材71の位置にて摘んだ状態が好ましく、これらストッパ部材71の各係止爪71bを空転部材57の凹溝67に嵌合させることで行う。
【0042】
次に、施錠状態から解掟するときは、上記施錠状態と同様に、まず、カバー部材69を取り外す。すなわち、カバー部材69の外側面から突出している各ストッパ部材71を同時に、それぞれの付勢部71cの付勢力に抗して揺動させる。そして、係止爪71bを凹溝67から後退させ互いの係合状態を解き、そのままカバー部材69とともに空転部材57から引き離し取り外す。
【0043】
次に、凸条部65の間である窓部57bより表出している回動円板51の周縁51kを摘む。回動円板51を反時計回り方向に回転させると、サムターン軸29もそれに伴って回転する。回動円板51が90度回動されると、サムターン軸29の入力部43により錠箱機構部内が操作され、扉25の木口に進出しているデットボルトが扉25の木口から後退させられる。
【0044】
これにより屋内側から扉25が解錠される。このとき、凸条部65のフランジ部55aの回転位置表示手段55dは縦長になっており、屋内側から解錠されていることが視認される。
【0045】
解錠操作を終えたら、カバー部材69を取り付ける。この取り付けは、カバー部材69を各ストッパ部材71の位置にて摘んだ状態が好ましく、これらストッパ部材71の各係止爪71bを空転部材57の凹溝67に嵌合させることで行う。
【0046】
また、施錠時において、扉25等に設けられた小窓を割り、或いは扉25と扉枠の隙間から針金を差し入れて、外部より防犯サムターン21を不正に操作しようとする場合、針金等の先端は、カバー部材69の表面を滑ることとなり、すなわち、針金等にて回転操作を行おうとしてもそのような操作を不能とする。ここで、カバー部材69の外側面より突出しているストッパ部材71に針金等が引っ掛かったとしても、カバー部材69は空転部材57とともに回転し、不正操作を不可能とし、すなわち、不正解錠を防止することができる。
【0047】
もし、カバー部材69が取り付けられていなくとも、上記のような不正な操作にて、針金が凸条部65に係止されようとしても、空転部材57自身が止軸55に対して回転自在であるため、空転部材57が空転するのみであり、止軸55及び摘み31を回動させることができず、デッドボルトも進退しないこととなる。従って、不正解錠を防止することができる。
【0048】
このように、上記の防犯サムターン21によれば、既存サムターン23の摘み31が回動円板51によって覆われ、また、回動円板51には、回動円板51の一部を表出する空転部材57が被される。さらにこれら回動円板51と空転部材57とはカバー部材69にてその外周を覆われることとなる。従って、針金や棒等を用いても、カバー部材69の表面を滑ることとなり、また、カバー部材69が空転部材57とともに空回りし、摘み31への回転力を伝達しない。そして、サムターンの操作を行うには、ストッパ部材71を操作し、空転部材57からカバー部材69を取り外し、空転部材57とともに窓部57bから表出した回動円板51を摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。
【0049】
そして、サムターンの操作時には、回動円板51の外側に空転部材57を配設するので、空転部材57とともに、窓部57bから表出した回動円板51を摘むことができ、回動円板51のみを摘む場合に比べて、指が滑り難くなり、またこの回動操作により空転部材57が回動円板51とともに回動することから、操作者の操作感を得られ、操作性を良好にすることができる。
【0050】
また、回動円板51に覆われることで視認できなくなった摘み31の回転位置が、回転位置表示手段55dを介して知ることができ、操作性を向上させることができる。
【0051】
なお、上述した実施の形態では、既設のサムターンである既存サムターン23に対して後付けを行うことで防犯性を得る防犯サムターンの構造について説明したが、予め防犯構造とされるサムターンであっても上記同様の効果を得られるものである。
すなわち、図5,6に示すように、錠機構部内に回動操作力を入力するサムターン軸83を備え、このサムターン軸83に、上記と同様の、回動円板85と空転部材87を設けるとともに、これら回動円板85と空転部材87とを覆うカバー部材69を構成した構造としてもよい。
【0052】
この防犯サムターンの構造によれば、サムターン軸83に回動円板85が設けられ、この回動円板85には、回動円板85の一部を表出する空転部材87が被される。さらにこれら回動円板85と空転部材87とはカバー部材69にてその外周を覆われることとなる。従って、針金や棒等を用いても、カバー部材69の表面を滑り、また、カバー部材69は空転部材87とともに空回りすることとなり、サムターン軸83への回転力を伝達しない。そして、サムターンの操作を行うには、係脱機構71を操作し、空転部材87からカバー部材69を取り外し、空転部材87とともに窓部87aから表出した回動円板85の周縁85aを摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。なお、サムターンの操作終了後、カバー部材69は空転部材87に取り付けられる。
【0053】
また、この防犯サムターンの構造において、サムターン軸83の先端面に、回転位置表示手段84が設けられることが好ましく、この防犯サムターンの構造によれば、サムターン軸83の回転位置が、回転位置表示手段84を介して知ることができ、カバー部材69を外した状態でのサムターン操作時における施錠及び解除の操作性が向上する。
【0054】
なお、上述した各実施の形態では、凸条部65を周方向に4つ形成することとしたが、4つに限定されることはなく、例えば、1個〜3個であってもよく、また5個以上であってもよい。この場合、凸条部65同士の間隔は、回動円板51が指に摘まれて回動操作可能となる程度の間隔であればよい。
【0055】
【発明の効果】
以上説明したように、本発明に係る請求項1記載の防犯サムターンの構造によれば、既存サムターンの摘みが回動円板によって覆われ、また、回動円板には、回動円板の一部を表出する空転部材が被され、さらにこれら回動円板と空転部材とはカバー部材にてその外周を覆われることとなるので、針金や棒等を用いて不正な解錠操作を行おうとしても、針金等はカバー部材の表面を滑ることとなり、また、カバー部材が空転部材とともに空回りし、摘みへの回転力を伝達せず、阻止することができる。そして、サムターンの操作を行うには、係脱機構を操作し、空転部材からカバー部材を取り外し、空転部材とともに窓部から表出した回動円板を摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。なお、サムターンの操作を終え、使用しないこととなれば、カバー部材にて覆われることとなり、上記のような不正な操作に対し、それを阻止するものとなり、不正解錠が不可能となる。
【0056】
請求項2記載の防犯サムターンの構造によれば、回動円板に覆われることで視認できなくなった摘みの回転位置が、回転位置表示手段を介して知ることができ、カバー部材を外した状態でのサムターン操作時における施錠及び解除の操作性を向上させることができる。
【0057】
請求項3記載の防犯サムターンの構造によれば、サムターン軸に回動円板が設けられ、この回動円板には、回動円板の一部を表出する空転部材が被され、さらにこれら回動円板と空転部材とはカバー部材にてその外周を覆われることとなるので、針金や棒等を用いて不正な解錠操作を行おうとしても、針金等はカバー部材の表面を滑ることとなり、また、カバー部材が空転部材とともに空回りし、サムターン軸への回転力の入力を阻止することができる。そして、サムターンの操作を行うには、係脱機構を操作し、空転部材からカバー部材を取り外し、空転部材とともに窓部から表出した回動円板を摘むことで、従来同様の回転操作のみにより施解錠操作することが可能となる。
【0058】
請求項4記載の防犯サムターンの構造によれば、サムターン軸の回転位置が、回転位置表示手段を介して知ることができ、カバー部材を外した状態でのサムターン操作時における施錠及び解除の操作性を向上させることができる。
【図面の簡単な説明】
【図1】本発明に係る防犯サムターンを既存サムターンとともに表した縦断面図である。
【図2】図1に示した防犯サムターンの分解斜視図である。
【図3】図1におけるA−A線断面図である。
【図4】同防犯サムターンの操作状態を示す正面図である。
【図5】他の実施の形態の防犯サムターンの縦断面図である。
【図6】同正面図である。
【図7】従来の防犯カバーの扉への取り付け状態を示す斜視図である。
【図8】図7に示した防犯カバーの内部状態を表す断面図である。
【図9】図7に示した防犯カバーの別態様を表す部分破断側面図である。
【図10】図7に示した防犯カバーのさらに別態様を表す部分破断側面図である。
【符号の説明】
21…防犯サムターン
23…既存サムターン
25…扉
25a…屋内面
31…摘み
51,85…回動円板
51a…嵌入穴
51b…後面
51c…前面
51k,85a…周縁
53…固着手段
55a…フランジ部
55…止軸
55d,84…回転位置表示手段
57,87…空転部材
57a…湾曲面
57b,87a…窓部
69…カバー部材
71…係脱機構(ストッパ部材)
83…サムターン軸
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a security thumb-turn structure used for door locking and unlocking operations.
[0002]
[Prior art]
For example, a locking device provided on a door is configured to insert a double key (key) into a keyhole of a cylinder lock exposed to the outside and rotate the door to rotate a deadbolt advanced or retracted from a door opening of the door into a door frame. Locking and unlocking is performed by engaging and disengaging the strike provided in the door, and from the indoor side, simply turning the thumb turn knob to advance and retreat the deadbolt to easily lock and unlock the door. Like that.
[0003]
However, in recent years, illegal unlocking of unlocking a locking device by inserting a wire or the like through a post opening or a small hole opened by a mechanical tool, and locking and rotating the thumb turn, which is easy to rotate, has been increasing. For example, a security cover for a thumb turn disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-133125 is known as one that locks a wire or the like to such a thumb turn to prevent rotation.
[0004]
As shown in FIGS. 7 and 8, the security cover 1 has an insertion hole 3 into which the thumb turn 2 is inserted, and a portion that covers the outer surface 2a of the thumb turn 2 that draws a circular locus 2b when rotating. It is formed in a circular shape along the shape locus. Then, set screws 4, 4 which are screwed into the fitting holes 3, abut against the side surfaces of the thumb turn 2, and are clamped from both sides are provided.
The security cover 1 having such a configuration covers the security cover 1 so as to cover the thumb turn 2 by inserting the thumb turn 2 into the fitting hole 3. After that, the set screws 4 and 4 are screwed in and tightened to fix the security cover 1 to the thumb turn 2. Therefore, it is difficult to lock and rotate a wire or the like by the security cover 1 put on the thumb turn 2.
[0005]
As another embodiment of the security cover, as shown in FIG. 9, a security cover 1 including a mounting portion 5 and a main body 6 is disclosed. The mounting portion 5 is formed so that the outer shape of the security cover 1 can be easily operated by hand, and is provided with a locking projection 5a with which the main body 6 is locked. The mounting portion 5 can easily rotate the thumb turn 2 while covering the thumb turn 2. Further, the main body 6 has a locking portion 6a that can be locked to the locking protrusion 5a. In this way, the security cover 1 can be attached and detached by a simple operation called a locking operation. Furthermore, since the main body 6 idles at the locking portion 6a, it becomes impossible to lock and rotate a wire or the like.
[0006]
Further, as another embodiment of the above security cover, as shown in FIG. 10, a spring member 8 is provided between the locking portion 6a and the locking projection 5a, and a plurality of There is disclosed an engagement concave portion 5b and an engagement convex portion 6b engageable with the engagement concave portion 5b.
With such a configuration, the main body 6 can always be kept attached. That is, the main body 6 always idles between the locking projections 5a and the locking portions 6a, and when it is desired to rotate the thumb turn 2, the main body 6 is pressed by hand and the engaging projection 6b is attached to the mounting portion 5a. By rotating the main body 6 in this engaged state, the thumb turn 2 could be rotated.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 4-40362 [0008]
[Problems to be solved by the invention]
However, since the security cover shown in FIG. 7 and FIG. 8 has a cylindrical outer shape, when it is put on the thumb turn, it is originally an oval shape, so that the locked or non-locked state of the thumb turn can be visually recognized by its rotational position. There is a problem that the locked state is made invisible and the operability of locking and unlocking is reduced.
[0009]
Further, the security cover shown in FIG. 9 is composed of a mounting portion that allows the thumb turn to be operated to rotate, and a main body portion that is idle and detachable from the mounting portion, and has a simple locking structure. For this reason, there is a drawback that the main body is easily pulled out from the mounting portion.
[0010]
Further, the security cover shown in FIG. 10 can keep the main body attached at all times. However, when rotating the thumb turn, it is necessary to rotate the main body while pressing the main body by hand, which reduces the operability.
[0011]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to prevent rotation of a thumb turn by a wire, a rod, or the like, to enable operation only by conventional rotation only, and to eliminate the use of a thumb turn. In some cases, a security thumb-turn structure that does not allow a rotation operation is provided to improve security and operability. A second object of the present invention is to provide a security thumb-turn structure in which the rotational position of the thumb-turn can be easily visually recognized, thereby improving operability.
[0012]
[Means for Solving the Problems]
Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The security thumb-turn structure according to claim 1 of the present invention is a security thumb-turn structure that covers a knob 31 of an existing thumb-turn 23 attached to the indoor surface 25a of the door 25,
The rear surface 51b has a fitting hole 51a into which the knob 31 is inserted, and the knob 31 inserted into the fitting hole 51a is fixed by fixing means 53 to surround the knob 31 and be attached to the rotating disk 51. ,
A stop shaft 55 attached to and fixed to the front surface 51c of the rotating disk 51 and having a flange portion 55a on the front end surface;
The concave inner surface of the curved surface 57a is formed in a bowl shape that covers the rotating disk 51 from the front surface 51c, is rotatably supported by the stop shaft 55, and is restricted from being pulled out from the stop shaft 55 by the flange portion 55a. An idling member 57 having a window 57b for exposing a peripheral edge 51k of the rotating disk 51;
A cover member 69 formed in a bowl shape that covers the outer periphery from the front surface of the idling member 57 together with the rotating disk 51 and detachably attached to the idling member 57 via an engaging / detaching mechanism 71;
It is characterized by having.
[0013]
In this structure of the security thumb-turn, the knob 31 of the existing thumb-turn 23 is covered by the rotating disk 51, and the rotating disk 51 is covered by the idling member 57 that exposes a part of the rotating disk 51. Is done. Further, the outer circumference of the rotating disk 51 and the idling member 57 is covered by a cover member 69. Therefore, even if a wire, a rod, or the like is used, the surface of the cover member 69 slides, and the cover member 69 idles together with the idling member 57, and does not transmit the rotational force to the knob 31. In order to perform the thumb-turn operation, the engaging / disengaging mechanism 71 is operated, the cover member 69 is removed from the idling member 57, and the rotating disk 51 exposed from the window 57b together with the idling member 57 is picked up. The locking and unlocking operation can be performed only by the same rotation operation. After the operation of the thumb turn is completed, the cover member 69 is attached to the idling member 57.
[0014]
The structure of the security thumb-turn according to claim 2 is the same as the structure of the security thumb-turn according to claim 1,
A rotation position display means 55d is provided on the distal end surface of the stop shaft 55.
[0015]
In the structure of the security thumb-turn, the rotation position of the knob 31, which has become invisible due to being covered by the rotating disk 51, can be known through the rotation position display means 55 d, and the state in which the cover member 69 is removed is provided. The operability of locking and releasing at the time of the thumb turn operation is improved.
[0016]
The security thumb-turn structure according to claim 3 is a security thumb-turn structure including a thumb-turn shaft 83 that is located on the indoor surface 25a of the door 25 and that inputs a turning operation force into the lock mechanism.
A substantially flange-shaped rotating disk 85 provided on the thumb-turn shaft 83 and rotating with the thumb-turn shaft 83;
The rotary disk 85 is disposed on the front and rear surfaces of the rotary disk 85, is connected to the rotary disk 85 via the rotary disk 85, is rotatably supported by the thumb turn shaft 83, and has a peripheral edge 85 a of the rotary disk 85. An idling member 87 having a window 87a for exposing
A cover member 69 which is formed in a bowl shape covering the outer periphery from the front surface of the idling member 87 together with the rotating disk 85, and is detachably attached to the idling member 87 via an engaging / detaching mechanism 71;
It is characterized by having.
[0017]
In the security thumb-turn structure, a rotating disk 85 is provided on the thumb-turn shaft 83, and the rotating disk 85 is covered with an idling member 87 that exposes a part of the rotating disk 85. Further, the outer circumference of the rotating disk 85 and the idling member 87 is covered by the cover member 69. Therefore, even if a wire, a rod, or the like is used, the surface of the cover member 69 slides, and the cover member 69 idles together with the idling member 87, and does not transmit the rotational force to the thumb turn shaft 83. In order to perform the thumb-turn operation, the engaging / disengaging mechanism 71 is operated, the cover member 69 is removed from the idling member 87, and the rotating disk 85 exposed from the window 87a together with the idling member 87 is picked up. The locking and unlocking operation can be performed only by the same rotation operation. After the operation of the thumb turn is completed, the cover member 69 is attached to the idling member 87.
[0018]
The structure of the security thumb-turn according to claim 4 is the same as the structure of the security thumb-turn according to claim 3,
A rotation position display means 84 is provided on the tip surface of the thumb turn shaft 83.
[0019]
In the structure of the security thumb-turn, the rotation position of the thumb-turn shaft 83 can be known through the rotation-position display means 84, and the operability of locking and releasing at the time of the thumb-turn operation with the cover member 69 removed is improved. .
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the structure of the security thumb-turn according to the present invention will be described in detail with reference to the drawings.
In the structure of the security thumb-turn described below, an example will be described in which a security thumb-turn is configured with respect to an existing thumb-turn already provided on the indoor surface of the door.
FIG. 1 is a longitudinal sectional view showing the structure of a security thumb-turn according to the present invention together with an existing thumb-turn, and FIG. 2 is an exploded perspective view of the structure of the security thumb-turn shown in FIG.
[0021]
First, prior to describing the structure of the security thumb-turn according to the present embodiment, the existing thumb-turn 23 to be covered by the security thumb-turn 21 will be described.
As shown in FIG. 1, a lock box (not shown) is provided on the door 25, and the lock box includes a latch bolt, a dead bolt, and a lock box mechanism for moving these components forward and backward from the opening of the door 25. .
The door 25 has an existing thumb tern 23 projecting from an indoor surface 25a which is an indoor surface. The deadbolt of the lock box can be advanced and retracted from the opening of the door 25 by using a key on a cylinder lock provided on the outdoor surface of the door 25 or by turning the knob 31 of the existing thumb turn 23.
[0022]
The existing thumb turn 23 includes a tubular support portion 27, a thumb turn shaft 29 that is inserted into the tubular support portion 27, and a knob 31 that is connected to the thumb turn shaft 29 so as to be relatively non-rotatable or formed integrally with the thumb turn shaft 29. A substantially conical shape which is externally fitted to the tip of the cylindrical support portion 27 and a coil spring 35 which is externally fitted to the decorative tube 33 and is externally inserted into the cylindrical support portion 27 and pressed against the indoor surface 25a. It has a decorative ring 37 as a main component.
[0023]
The cylindrical support 27 is formed in a substantially cylindrical shape. A pair of convex portions 39, 39 in a direction perpendicular to the axis are provided on the rear end portion 27a of the cylindrical support portion 27 on the upper and lower sides of the outer periphery. The fixing holes 41 are formed in these convex portions 39, 39. The rear end of the cylindrical support 27 is inserted into an insertion hole 25b formed in the indoor surface 25a, and is fixed to a lock box (not shown) provided in the door 25 through the fixing hole 41. As a result, the cylindrical support portion 27 is non-rotatably fixed to the lock box, and is fixed to the indoor surface 25a side of the door 25 via the lock box.
[0024]
The distal end of the cylindrical support portion 27 protrudes from the indoor surface 25a, and a substantially conical decorative ring 37 whose distal end is cut off is attached to the outer periphery thereof so that the distal end portion becomes the distal end of the cylindrical support portion 27. I have. A decorative cylinder 33 is provided at the distal end of the cylindrical support portion 27 and covers the distal end surface of the cylindrical support portion 27.
[0025]
The thumb turn shaft 29 has an input portion 43 having a cross-section at its base end, and the input portion 43 is fitted into the input shaft of a lock box mechanism (not shown) so as to be relatively non-rotatable. The thumb turn shaft 29 is inserted into and supported by the cylindrical support portion 27, and a movement restricting member such as an E-ring (not shown) is attached to the thumb turn shaft 29. The distal end of the thumb turn shaft 29 is connected to the knob 31 projecting from the distal end surface of the decorative cylinder 33 so as to be relatively non-rotatable. Therefore, in the existing thumb turn 23, when the knob 31 is rotated, the inside of the lock box mechanism is operated by the input unit 43 through the thumb turn shaft 29, and the dead bolt advances and retreats from the opening of the door 25. .
[0026]
The security thumb-turn 21 according to the present embodiment can be attached to the existing thumb-turn 23.
The security thumb-turn 21 has a fitting hole 51a for inserting the knob 31 on the rear surface 51b, and the knob 31 inserted into the fitting hole 51a is fixed by the fixing means 53 to surround the knob 31 and to be attached. And a stop shaft 55 attached to and fixed to the front surface 51c of the rotating disk 51 and having a flange portion 55a at the front end surface, and a concave inner surface opposite to the curved surface 57a to move the rotating disk 51 from the front surface 51c. It has a window portion 57b that is formed in a covering bowl shape, is rotatably supported by the stop shaft 55, is restricted from being pulled out from the stop shaft 55 by the flange portion 55a, and exposes the peripheral edge 51k of the rotary disk 51. And a cover member 69 that is formed in a bowl shape that covers the outer periphery from the front surface of the idling member 57 together with the rotating disk 51, and that is detachably attached to the idling member 57 via an engagement / disengagement mechanism 71. Is
[0027]
The rotating disk 51 has a step portion 51f by forming a small diameter portion 51e coaxially on the front surface of the large diameter portion 51d on the rear surface 51b side. A screw hole 51g, which is a fixing means 53, is formed in the side surface of the large diameter portion 51d in the radial direction, and the screw hole 51g communicates with the fitting hole 51a. A fixing screw 61 as a fixing means 53 is screwed into the screw hole 51g. That is, the rotating disk 51 is inserted by inserting the knob 31 into the fitting hole 51a and tightening the fixing screw 61 screwed into the screw hole 51g, so that the tip of the fixing screw 61 is pressed against the knob 31 and the knob 31 is pressed. It can be attached and fixed. That is, the rotating disk 51 is attached so as to rotate integrally with the knob 31.
[0028]
A recess 51h is formed substantially at the center of the front surface 51c of the rotating disk 51, and the base end 55b of the stop shaft 55 is fitted into the recess 51h. Further, a fixing hole 51j penetrates from the rear surface 51b of the rotating disk 51 to the concave portion 51h. On the other hand, a screw hole 55c is formed in the stop shaft 55 in the axial direction. The stop shaft 55 is attached and fixed by screwing the screw 52 inserted into the fixing hole 51j into the screw hole 55c of the stop shaft 55, thereby fitting the base end 55b into the concave portion 51h.
[0029]
Rotational position display means 55d is provided on the flange portion 55a of the stop shaft 55. The rotation position display means 55d is provided with markings with minute irregularities, printing or engraving, or coloring by partial coloring. For example, as shown in FIG. 2, when unlocking, the rotation position display means 55d has a vertically long shape, and when locking, when the rotating disk 51 is rotated 90 degrees clockwise, it becomes horizontally long, Unlocking and locking can be distinguished.
[0030]
The idling member 57 has a through hole 63 in the center thereof, through which the retaining shaft 55 is inserted. The idling member 57 has a plurality of, in the present embodiment, four ridges 65 projecting from the curved surface 57a of the bowl portion 57c and radially extending from the through hole 63 along the curved surface. The ridge 65 extends from the bottom of the bowl 57c.
[0031]
The convex portion 65 of the idling member 57 is located outside the large-diameter portion 51 d of the rotating disk 51, and the extending end is disposed around the decorative ring 37. A step 65a is formed inside the bowl 57c of the ridge 65. The step 65a is adapted to be combined with the step 51f of the rotating disk 51. In this state, the idling member 57 becomes rotatable with respect to the stop shaft 55. Therefore, the idling member 57 is held so as to be rotatable relative to the rotating disk 51. In the idling member 57, a gap between the ridges 65 is a window 57b. A peripheral edge 51k of the rotating disk 51 is exposed from the window 57b.
In addition, a concave groove 67 related to an engagement / disengagement mechanism 71 to be described later is formed on the outer surface of the ridge portion 65 of the idling member 57. In this embodiment, two of the four ridges 65 are formed at opposing positions, but may be formed on each ridge 65.
[0032]
Therefore, the rotating disk 51 and the stop shaft 55 are assembled to the rotating disk 51, and the rotating disk 51 is attached and fixed to the knob 31 by the fixing means 53.
[0033]
As shown in FIG. 2, the cover member 69 has an outer peripheral surface preferably formed with a curved surface, and a concave ridge 69 a into which each ridge 65 of the idling member 57 is fitted. It is formed. A pair of substantially semi-cylindrical ridges 70 are formed on the outer peripheral surface on the base end side of the cover member 69 so as to protrude along the axial direction. Each of the ridges 70 is formed at a position that is 180 degrees with respect to the center axis and that is outward from each other. Further, mounting grooves 72 are formed on the outer peripheral surface of the ridges 70 at right angles to each other along the circumferential direction. An insertion hole 70a is formed in each protrusion 70 in the longitudinal direction which is the axial direction. Each mounting groove 72 is provided with a through-hole 73 penetrating the side wall of the cover member 69. A stopper member 71 as an engagement / disengagement mechanism is provided in each of the mounting grooves 72.
[0034]
As shown in FIGS. 2 and 3, each stopper member 71 has a shaft hole 71a formed halfway, and has a locking claw 71b at the tip. The stopper member 71 has an urging portion 71c that extends obliquely from the middle. In the stopper member 71, a locking claw 71b and an urging portion 71c are located in the mounting groove 72 of the cover member 69, and the urging portion 71c is disposed at the bottom of the mounting groove in an abutting state. It is swingably attached by a pin 75 that penetrates and is inserted into the insertion hole 70a of the ridge 70. As shown in FIG. 3, the stopper 71 has an operation section 71 d at the base end protruding from the outer surface of the cover member 69. The stopper member 71 is made of a flexible polyacetal resin or the like.
[0035]
Therefore, this cover member 69 is attached so as to cover the outer circumference from the front surface of the idling member 57 together with the rotating disk 51, and the locking claws 71 b of each stopper member 71 are engaged with the concave groove of the ridge 65 of the idling member 57. The cover member 69 and the idling member 57 are substantially integrated with each other, and the entire security thumb turn 21 is attached to the knob 31.
[0036]
Next, the operation of the present embodiment will be described.
First, the case of locking from the indoor side will be described.
The operator removes the cover member 69. As shown in FIG. 4, the operating portions 71d of the stopper members 71 projecting from the outer surface of the cover member 69 are simultaneously swung against the urging forces of the respective urging portions 71c. Then, the locking claws 71b are retracted from the grooves 67 to disengage each other, and are separated from the idling member 57 together with the cover member 69 and removed.
[0037]
Next, the operator picks the peripheral edge 51k of the rotating disk 51 exposed from the window 57b. At this time, the picked finger may also pick the idler member 57 at the same time.
[0038]
When the rotating disk 51 is rotated, for example, clockwise by twisting the pinched hand, the knob 31 also rotates accordingly. When the lock box mechanism is operated by, for example, 90 degrees, the input unit 43 of the thumb turn shaft 29 operates the deadbolt to advance to the opening of the door 25.
[0039]
Thus, the door 25 is locked from the indoor side. At this time, the rotation position display means 55d of the flange portion 55a of the stop shaft 55 is horizontally long, and it is visually recognized that the lock is locked from the indoor side.
[0040]
Note that a finger pinching the peripheral edge 51k of the rotating disk 51 comes into contact with the side of the ridge 65 with the rotation of the rotating disk 51, whereby the idling member 57 is brought into contact with the rotating disk 51. Rotate in the same direction.
[0041]
After the locking operation is completed, the cover member 69 is attached. This attachment is preferably performed by holding the cover member 69 at the position of each stopper member 71, and is performed by fitting each locking claw 71 b of the stopper member 71 into the concave groove 67 of the idling member 57.
[0042]
Next, when unlocking from the locked state, the cover member 69 is first removed similarly to the locked state. That is, the stopper members 71 protruding from the outer surface of the cover member 69 are simultaneously swung against the urging forces of the respective urging portions 71c. Then, the locking claws 71b are retracted from the grooves 67 to disengage each other, and are separated from the idling member 57 together with the cover member 69 and removed.
[0043]
Next, the peripheral edge 51k of the rotating disk 51 that is exposed from the window 57b between the ridges 65 is picked. When the rotating disk 51 is rotated in the counterclockwise direction, the thumb turn shaft 29 also rotates accordingly. When the rotating disk 51 is rotated by 90 degrees, the inside of the lock box mechanism is operated by the input unit 43 of the thumb turn shaft 29, and the dead bolt that has advanced to the opening of the door 25 is retracted from the opening of the door 25. .
[0044]
Thus, the door 25 is unlocked from the indoor side. At this time, the rotational position display means 55d of the flange portion 55a of the ridge portion 65 is vertically long, and it is visually recognized that the door is unlocked from the indoor side.
[0045]
After the unlocking operation is completed, the cover member 69 is attached. This attachment is preferably performed by holding the cover member 69 at the position of each stopper member 71, and is performed by fitting each locking claw 71 b of the stopper member 71 into the concave groove 67 of the idling member 57.
[0046]
Further, at the time of locking, if a small window provided on the door 25 or the like is split, or a wire is inserted through a gap between the door 25 and the door frame to illegally operate the security thumb-turn 21 from the outside, the tip of the wire or the like may be used. Is to slide on the surface of the cover member 69, that is, even if it is attempted to perform a rotation operation with a wire or the like, such operation becomes impossible. Here, even if the wire or the like is caught on the stopper member 71 protruding from the outer side surface of the cover member 69, the cover member 69 rotates together with the idling member 57, thereby making unauthorized operation impossible, that is, preventing unauthorized unlocking. can do.
[0047]
Even if the cover member 69 is not attached, even if the wire tries to be locked to the ridge portion 65 by the above-described illegal operation, the idle member 57 itself can freely rotate with respect to the stop shaft 55. Therefore, the idling member 57 only spins, the stop shaft 55 and the knob 31 cannot be rotated, and the dead bolt does not advance or retreat. Therefore, unauthorized unlocking can be prevented.
[0048]
Thus, according to the security thumb-turn 21 described above, the knob 31 of the existing thumb-turn 23 is covered by the rotating disk 51, and a part of the rotating disk 51 is exposed on the rotating disk 51. The idle rotation member 57 is covered. Further, the outer circumference of the rotating disk 51 and the idling member 57 is covered by a cover member 69. Therefore, even if a wire, a rod, or the like is used, the surface of the cover member 69 slides, and the cover member 69 idles together with the idling member 57, and does not transmit the rotational force to the knob 31. In order to perform the thumb-turn operation, the stopper member 71 is operated, the cover member 69 is removed from the idling member 57, and the rotating disk 51 exposed from the window 57b together with the idling member 57 is pinched, as in the conventional case. It is possible to perform the locking and unlocking operation only by the rotation operation of.
[0049]
When the thumb turn is operated, the idling member 57 is disposed outside the rotating disk 51, so that the rotating disk 51 exposed from the window 57b can be pinched together with the idling member 57, and As compared with the case where only the plate 51 is picked, the finger is less likely to slide, and the idling member 57 is rotated together with the rotating disk 51 by this rotating operation. Can be good.
[0050]
Further, the rotational position of the knob 31 which cannot be visually recognized by being covered with the rotating disk 51 can be known via the rotational position display means 55d, and the operability can be improved.
[0051]
In the above-described embodiment, the structure of the security thumb-turn which obtains security by performing retrofitting on the existing thumb-turn 23 which is an existing thumb-turn has been described. A similar effect can be obtained.
That is, as shown in FIGS. 5 and 6, a thumb-turn shaft 83 for inputting a turning operation force is provided in the lock mechanism, and the turning disk 85 and the idling member 87 are provided on the thumb-turn shaft 83 in the same manner as described above. In addition, a structure may be adopted in which a cover member 69 that covers the rotating disk 85 and the idling member 87 is configured.
[0052]
According to the structure of this security thumb turn, the turning disk 85 is provided on the thumb turn shaft 83, and the idling member 87 that exposes a part of the turning disk 85 is covered on the turning disk 85. . Further, the outer circumference of the rotating disk 85 and the idling member 87 is covered by the cover member 69. Therefore, even if a wire, a rod, or the like is used, the cover member 69 slides on the surface of the cover member 69, and the cover member 69 idles together with the idling member 87, so that the rotational force to the thumb turn shaft 83 is not transmitted. To perform the thumb turn operation, the user operates the engagement / disengagement mechanism 71, removes the cover member 69 from the idling member 87, and grips the peripheral edge 85a of the rotating disk 85 exposed from the window 87a together with the idling member 87. Thus, the locking and unlocking operation can be performed only by the conventional rotation operation. After the operation of the thumb turn is completed, the cover member 69 is attached to the idling member 87.
[0053]
Further, in the structure of the security thumb-turn, it is preferable that a rotation position display means 84 is provided on the tip end surface of the thumb-turn shaft 83. According to the structure of the security thumb-turn, the rotation position of the thumb-turn shaft 83 is changed by the rotation position display means. The operability of locking and unlocking at the time of the thumb turn operation with the cover member 69 removed is improved.
[0054]
In each of the above-described embodiments, four ridges 65 are formed in the circumferential direction. However, the number of ridges 65 is not limited to four, and may be one to three, for example. Further, the number may be five or more. In this case, the interval between the ridge portions 65 may be an interval that allows the rotating disk 51 to be pinched by a finger and to be able to rotate.
[0055]
【The invention's effect】
As described above, according to the structure of the security thumb-turn according to claim 1 of the present invention, the knob of the existing thumb-turn is covered with the rotating disk, and the rotating disk has the rotating disk. An idler member that exposes a part is covered, and furthermore, the rotating disk and the idler member are covered by a cover member, so that an unauthorized unlocking operation using a wire, a rod, or the like is performed. Even if it is attempted, the wire or the like slides on the surface of the cover member, and the cover member idles together with the idling member, so that the rotation force is not transmitted to the knob, so that the rotation can be prevented. To operate the thumb turn, operate the engagement / disengagement mechanism, remove the cover member from the idling member, and pinch the rotating disk exposed from the window together with the idling member. Locking and unlocking operations can be performed. If the thumb-turn operation is not performed after the operation, the cover is covered by the cover member, which prevents the above-mentioned unauthorized operation and prevents unauthorized unlocking.
[0056]
According to the structure of the security thumb-turn according to the second aspect, the rotation position of the knob, which has become invisible due to being covered by the rotating disk, can be known through the rotation position display means, and the cover member is removed. The operability of locking and unlocking at the time of the thumb-turn operation can be improved.
[0057]
According to the structure of the security thumb-turn according to the third aspect, a rotating disk is provided on the thumb-turn shaft, and the rotating disk is covered with an idling member that exposes a part of the rotating disk. Since the outer periphery of the rotating disk and the idling member is covered by a cover member, even if an unauthorized unlocking operation is performed using a wire, a rod, or the like, the wire or the like will cover the surface of the cover member. As a result, the cover member slips together with the idling member, so that the input of rotational force to the thumb turn shaft can be prevented. To operate the thumb turn, operate the engagement / disengagement mechanism, remove the cover member from the idling member, and pinch the rotating disk exposed from the window together with the idling member. Locking and unlocking operations can be performed.
[0058]
According to the structure of the security thumb-turn according to the fourth aspect, the rotation position of the thumb-turn shaft can be known through the rotation position display means, and the operability of locking and unlocking at the time of the thumb-turn operation with the cover member removed. Can be improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a security thumb-turn according to the present invention together with an existing thumb-turn.
FIG. 2 is an exploded perspective view of the security thumb-turn shown in FIG.
FIG. 3 is a sectional view taken along line AA in FIG.
FIG. 4 is a front view showing an operation state of the security thumb turn.
FIG. 5 is a longitudinal sectional view of a security thumb turn according to another embodiment.
FIG. 6 is a front view of the same.
FIG. 7 is a perspective view showing a conventional security cover attached to a door.
8 is a cross-sectional view illustrating an internal state of the security cover illustrated in FIG.
FIG. 9 is a partially broken side view showing another embodiment of the security cover shown in FIG.
FIG. 10 is a partially cutaway side view showing still another embodiment of the security cover shown in FIG. 7;
[Explanation of symbols]
21 Security Thumb Turn 23 Existing Thumb Turn 25 Door 25a Indoor Surface 31 Knob 51, 85 Rotating Disk 51a Fitting Hole 51b Rear Surface 51c Front Surface 51k, 85a Peripheral Edge 53 Fixing Means 55a Flange 55 ... Stop shafts 55d, 84 ... Rotational position display means 57, 87 ... Idling members 57a ... Curved surfaces 57b, 87a ... Windows 69 ... Cover members 71 ... Disengagement mechanisms (stopper members)
83 ... Thumb turn axis

Claims (4)

扉の屋内面に取り付けられた既存サムターンの摘みを覆う防犯サムターンの構造であって、
前記摘みを挿入する嵌入穴を後面に有し該嵌入穴に挿入した前記摘みを固着手段によって固定して前記摘みを包囲して被着される回動円板と、
該回動円板の前面に取り付け固定され前端面にフランジ部を有した止軸と、
湾曲面の凹状内面で前記回動円板を前面から覆う碗状に形成され前記止軸に回動自在に支持されるとともに前記フランジ部によって前記止軸からの抜脱が規制され且つ前記回動円板の周縁を表出させる窓部を有した空転部材と、
前記回動円板とともに前記空転部材の前面から外周を覆う碗状に形成され、係脱機構を介して前記空転部材に脱着自在に取り付けられるカバー部材と、
を具備したことを特徴とする防犯サムターンの構造。
It is a structure of security thumb-turn that covers the knob of the existing thumb-turn attached to the indoor surface of the door,
A rotary disc having a fitting hole for inserting the knob on the rear surface, the knob inserted into the fitting hole fixed by fixing means, and surrounded and attached to the knob;
A stop shaft attached to and fixed to the front surface of the rotating disk and having a flange portion on a front end surface;
The concave inner surface of the curved surface is formed in a bowl shape that covers the rotating disk from the front, is rotatably supported by the stop shaft, and is prevented from being pulled out from the stop shaft by the flange portion, and the rotation circle An idling member having a window for exposing the periphery of the plate,
A cover member that is formed in a bowl shape that covers the outer periphery from the front surface of the idling member together with the rotating disk, and that is detachably attached to the idling member via an engaging and disengaging mechanism;
The structure of the security thumb turn, characterized by comprising:
請求項1記載の防犯サムターンの構造において、
前記止軸の先端面に、回転位置表示手段が設けられたことを特徴とする防犯サムターンの構造。
The structure of the security thumb turn according to claim 1,
A security thumb-turn structure, wherein a rotation position display means is provided on a tip end surface of the stop shaft.
扉の屋内面に位置し、錠機構部内に回動操作力を入力するサムターン軸を備える防犯サムターンの構造であって、
前記サムターン軸に設けられ、該サムターン軸とともに回動する略フランジ状の回動円板と、
該回動円板の前面及び後面に配置され、該回動円板を挟んで連結されて、前記サムターン軸に回動自在に支持されるとともに、前記回動円板の周縁を表出させる窓部を有した空転部材と、
前記回動円板とともに前記空転部材の前面から外周を覆う碗状に形成され、係脱機構を介して前記空転部材に脱着自在に取り付けられるカバー部材と、
を具備したことを特徴とする防犯サムターンの構造。
A security thumb-turn structure having a thumb-turn shaft that is located on the indoor surface of the door and that inputs a turning operation force into the lock mechanism,
A substantially flange-shaped rotating disk provided on the thumb-turn shaft and rotating with the thumb-turn shaft;
Windows arranged on the front and rear surfaces of the rotating disk, connected to each other with the rotating disk interposed therebetween, rotatably supported by the thumb turn shaft, and exposing the periphery of the rotating disk. An idling member having a portion,
A cover member that is formed in a bowl shape that covers the outer periphery from the front surface of the idling member together with the rotating disk, and that is detachably attached to the idling member via an engaging and disengaging mechanism;
The structure of the security thumb turn, characterized by comprising:
請求項3記載の防犯サムターンの構造において、
前記サムターン軸の先端面に、回転位置表示手段が設けられたことを特徴とする防犯サムターンの構造。
The structure of the security thumb turn according to claim 3,
A security thumb-turn structure, wherein a rotation position display means is provided on a tip surface of the thumb-turn shaft.
JP2002303816A 2002-10-18 2002-10-18 Structure of security thumb turn Expired - Fee Related JP4181844B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006336448A (en) * 2005-06-03 2006-12-14 Miwa Lock Co Ltd Crime prevention thumb-turn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006336448A (en) * 2005-06-03 2006-12-14 Miwa Lock Co Ltd Crime prevention thumb-turn
JP4566842B2 (en) * 2005-06-03 2010-10-20 美和ロック株式会社 Security thumb turn

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