JP4328130B2

JP4328130B2 - Door lock box

Info

Publication number: JP4328130B2
Application number: JP2003153635A
Authority: JP
Inventors: 兵道幹男
Original assignee: 美和ロック株式会社
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2009-09-09
Anticipated expiration: 2023-05-30
Also published as: JP2004353349A

Description

【０００１】
【発明の属する技術分野】
本発明は扉用錠箱に関し、特に泥棒が超硬ドリル、超硬ホールソーなどの切削工具を使用して錠箱を破壊する場合に有効な扉用錠箱に関する。
【０００２】
【従来の技術】
従来の一例として特開２００３−１２００８３公報を記載する。この公報に記載の錠構造は、泥棒が挟み部を有するプライヤーを用い、化粧リングと共に、固定筒及びシリンダー錠を無理やり「もぎ取る」ことを防止している。
【０００３】
しかしながら、近年、泥棒の手口が悪化し、超硬ドリル、超硬ホールソーなどの切削工具を用い、シリンダーの外筒体の周縁部、扉の所要箇所、錠箱の施・解錠機構をカバーする幅広側壁等にそれぞれ攻撃を加えて適当な孔を開け、かつ、該孔を利用して七つ道具を操作し、デッドカム（通称、ダルマ）の駆動腕を解錠方向へと回転させる「カム送り」事件が発生している。
【０００４】
そこで、このような「カム送り」ケースの場合には、シリンダーのもぎ取り対策のみでは必ずしも万全ではなく、もっと、別の観点から錠前を保護する対策を講じる必要がある。
【０００５】
【発明が解決しようとする課題】
本発明の第１の目的は、泥棒が超硬ドリル、超硬ホールソーを用いて扉の外壁面に穴を開けて錠前を攻撃してきた場合にも防御し得る錠箱を提供することである。これにより、「カム送り」を防御することができる。第２の目的は、既存の錠箱をそのまま用いることができることである。
【０００６】
【課題を解決するための手段】
本発明の扉用錠箱は、デッドボルトの戻しを防止するために、防御プレートに収納部を形成し、該収納部に切削工具の刃先が滑る断面円形の硬い防御部品を充填し、該防御プレートを、少なくとも扉に取付けられる錠箱のシリンダーが装着される側の幅広側壁に固定される扉用錠箱であって、前記防御プレートは、外側の第１プレートと、シリンダーが装着される側の幅広側壁に固定される第２プレートと、前記第１プレートと第２プレートとの間に介在する第３プレートとから成り、前記第３プレートの少なくともデッドボルトを基準とする所要範囲の部位に前記収納部を形成し、該収納部に前記硬い防御部品が隙間なく複数個並列状態に充填されていることを特徴とする。
【０００７】
また、本発明の扉用錠箱は、デッドボルトの戻しを防止するために、防御プレートに収納部を形成し、該収納部に切削工具の刃先が滑る断面円形の硬い防御部品を充填し、該防御プレートを、少なくとも扉に取付けられる錠箱のシリンダーが装着される側の幅広側壁に固定される扉用錠箱であって、前記防御プレートはコ字型状に形成され、該コ字型状の防御プレートの対向側壁の少なくとも一側壁に前記収納部を形成し、該収納部に前記硬い防御部品が隙間なく複数個並列状態に充填され、さらに、該防御プレートを前記硬い防御部品を有する一側壁が錠箱のシリンダーが装着される幅広側壁に添設状態になるように錠箱に固定的に嵌め込んだことを特徴とする。
【０００８】
また、本発明の扉用錠箱は、デッドボルトの戻しを防止するために、防御プレートに収納部を形成し、該収納部に切削工具の刃先が滑る断面円形の硬い防御部品を充填し、該防御プレートを、少なくとも扉に取付けられる錠箱のシリンダーが装着される側の幅広側壁に固定される扉用錠箱であって、前記防御プレートは、第１プレートと、この第１プレートよりも肉厚があり、かつ所要箇所に前記第１プレートの裏面にその開口が向く横向き凹所状の収納部を有する第２プレートとから成り、前記収納部に前記硬い防御部品を隙間なく複数個並列状態に充填し、該防御プレートを錠箱のシリンダーが装着される幅広側壁に固定した本発明の扉用錠箱は、ことを特徴とする。
【０００９】
上記構成に於いて、硬い防御部品は、超硬合金としての超硬ピン、或いは炭素鋼を焼き入れ処理して形成された棒状体であることを特徴とする。
【００１０】
【発明の実施の形態】
まず、図１及び図５を参照にして本発明の実施の形態について説明する。１は錠箱で、この錠箱１はケース身２と、このケース身に固着手段を介して結合するケース蓋３とから成る。前記ケース身２は、縦長状の取り付け板４、この取り付け板４の内壁面に固定された比較的短い介在板５、取り付け板４の外壁面に固定されるフロント６をそれぞれ有する。フロント６、介在板５、取り付け板４をそれぞれ固着する固着具や錠前の施錠機構は本発明に直接関係のないので割愛している。
【００１１】
７は取り付け板４並びにフロント６から出入りできるように錠箱１に横設されたデッドボルトで、このデッドボルト７は、窓部８、ガイド軸９などに案内される。デッドボルト７は、図示しないストライクと係合する先端部、前記ガイド軸９と係合する水平長孔を有する中間部、デッドカム（通称、ダルマ）１０と係合する後端部などを有する。
【００１２】
１１はケース身２に固定的に設けられた複数本のメネジの支柱で、これらのメネジ支柱１１には、複数個の固着具がそれぞれ螺合する。
１２はケース身２並びにケース蓋３の内壁面にそれぞれカシメ固定された受け座（ケース身２側の受け座は図示を省略）で、これらの受け座１２の中央部には、円形の嵌合孔を有する嵌合部が突出形成されている。
【００１３】
しかして、前記受け座１２（ケース身の受け座も含む）の嵌合孔には、前述したデッドカム１０の筒状係合部が回動可能に嵌合する。デッドカム１０は筒状係合部から半径方向に延びる駆動腕１３を有しており、該駆動腕１３は前述したデッドボルト７の後端部に係合している。デッドカム７は、合鍵の操作によって作動するシリンダーまたはサムターンの駆動力により回転する。これによりデッドボルト７は出没する。
【００１４】
ここで、図１を参照にしてケース身２の幅広側壁に形成されたシリンダー用嵌合孔１５について説明する。普通一般に、錠箱１のケース身２及びケース蓋３の幅広側壁１４の隅角部には、シリンダー用嵌合孔１５とサムターン用の嵌合孔（図示しない）がそれぞれ形成されている。これらの嵌合孔は、外観上、「ちょうちん」の輪郭形状に形成され、ケース身２側の嵌合孔１５には、シリンダー１６の外筒端部が装着する。
【００１５】
ところで、シリンダー１６は、合鍵を操作すると、デッドカム１０の駆動腕１３が、図１の矢印方向（時計方向）に回転するから、デッドボルト７が矢印方向（施錠方向）へと突出する。
したがって、合鍵がない場合に於いて、泥棒が図示しない切削工具を用い、扉の所要箇所及び錠箱１の幅広側壁１４にそれぞれ攻撃を加えて孔を開け、かつ、七つ道具（針金等）を操作して前記駆動腕１３を矢印とは逆方向（反時計方向）へ回転させる恐れが十分にある。
【００１６】
そこで、本発明は、デッドボルト７の戻し（解錠方向への移動）を防止するために、図１で示すような防御プレート２１に収納部２２を形成し、該収納部２２に切削工具の刃先が滑る断面円形の硬い防御部品２３を複数個並列状態に充填し、該防御プレート２１を錠箱１のシリンダーが装着される側の幅広側壁１４に固定した。
【００１７】
次に、防御プレート２１の具体的構成を説明する。図２は本発明の防御プレート２１の分解図である。図３及び図４は、防御プレート２１の内部構造を錠箱１との関係で示す。
【００１８】
第１実施例の防御プレート２１は、これらの図から明らかなように、４つの構成部材からなる。すなわち、該防御プレート２１は、図２の手前側の第１プレート２５と、向こう側の第２プレート２６と、前記第１プレート２５と第２プレート２６との間に介在する中間の第３プレート２７とから成り、前記第３プレート２７の少なくともデッドボルト７を基準とする所要範囲の部位には、角形、丸形等の任意形状の収納部２２が形成されている。
【００１９】
しかして、前記収納部２２は、本実施例では、錠箱１のシリンダー用嵌合孔１５に対応するプレート嵌合孔（これを便宜上、「第３嵌合孔２９」という）の付近が段差状になっている矩形状開口であって、該矩形状開口２２内に、例えば炭素鋼を焼き入れ処理して形成された多数の棒状体２３が並列状態に収納される。つまり、多数の棒状体２３が、本発明の「硬い防御部品」の一例に相当する。
【００２０】
多数の棒状体２３は、図２で示すように、長短の細長いピン状棒状体２３である。棒状体２３長さは、矩形状開口２２の幅寸法に対応して短いものから長いものまで色々とある。各棒状体２３の断面形状は、図３で示すように円形（真円）である。
【００２１】
また各棒状体２３の直径は、第３プレート２７の肉厚に対応して第１プレート２５または／及び第２プレート２６の肉厚よりも大きい。本実施例では第３プレート２７の厚みは、第１プレート２５又は第２プレート２６の厚みの「２倍」或いは「３倍」であることから、棒状体２３の直径は、第１プレート２５又は第２プレート２６の厚みの「２倍」或いは「３倍」である。
【００２２】
ところで、泥棒が使う超硬ドリル、超硬ホールソーなどの切削工具の刃先は、タングステンＷと炭素Ｃのそれぞれの粉末を一定の割合で混合、化合、加圧成形等を施して作られる超硬合金であることから、本発明の「硬い防御部品２３」は、超硬合金としての超硬ピンを採用している。
【００２３】
また、前記第１プレート２５及び第２プレート２６の隅角部にも、前述した第３嵌合孔２９に相当する第１嵌合孔３０、第２嵌合孔３１がそれぞれ形成されている。さらに、第１乃至第３プレート２５．２６．２７の適宜箇所には、固定手段（カシメ、固着具）用の貫通小孔３３が所定間隔を有して複数個形成されている。
【００２４】
防御プレート２１に関して、さらに説明する。図３で示すように、収納部としての開口２２を有する第３プレート２７は、外から見える第１プレート２５とケース身の幅広側壁１４に直接固定される第２プレート２６にサンドイッチ状に挟着されている。
【００２５】
また、前記開口２２に収納された硬い防御部品２３は、炭素鋼を焼き入れ処理して形成された棒状体、或いは超硬合金としての超硬ピンであるが、少なくとも外側に位置する前記第１プレート２５は、その肉厚の関係も含め、超硬ドリル、超硬ホールソーなどの切削工具に対して防御が十分でないものの、炭素鋼を焼き入れ処理して形成されている。
【００２６】
しかして、前記防御プレート２１は、少なくともデッドボルトの戻し（カム送り）を防止するために、錠箱１のシリンダー１６が装着される幅広側壁１４に固定されている。
【００２７】
【実施例】
第１実施例の防御プレート２１に於いて、サンドイッチ状に挟まれた第３プレート２７の収納部（開口）２２は、角形、丸形のいずれでも良い。収納部（開口）２２には、間隙が生じないよう硬い防御部品２３が充填されている。硬い防御部品２３は水平状態に配設されているが、垂直状態、或いは傾斜状態に配設しても良い。また硬い防御部品２３は長い棒状体であるが、短い棒状体、或いはパチンコ玉のような球体であっても良い。
【００２８】
次に、この欄では、図６及び図７に示す第２実施例と、図８及び図９に示す第３実施例を説明する。なお、これらの各実施例は前記第１実施例の錠箱１と技術的思想が同一なので、同一の部分には同一または同様の符号を付して重複する説明を省略する。
【００２９】
図６及び図７に示す第２実施例に於いて、前記第１実施例と主に異なる点は、デッドボルトの戻しを防止するために、コ字型状の防御プレート２１Ａの対向側壁４０．４１の少なくとも一側壁４０に収納部２８Ａを形成し、該収納部２８Ａに切削工具の刃先が滑る断面円形の硬い防御部品２３を複数個並列状態に充填し、該防御プレート２１Ａを、前記硬い防御部品２３を有する一側壁４０が錠箱１のシリンダー１６が装着される側の幅広側壁１４に添設状態になるように錠箱に固定的に嵌め込んだことである。
【００３０】
しかして、この第２実施例では、図７で示すように、シリンダー１６が装着する錠箱１の幅広側壁１４にフイット状態に添設する一側壁４０と、サムターン１７が装着する錠箱１の幅広側壁１８にフイット状態に添設する他側壁４１の両方に前記収納部２８Ａ．２８Ａをそれぞれ形成し、これらの収納部２８Ａ．２８Ａに硬い防御部品２３の一例としての複数個の棒状体を、隙間なく、かつ、並列状態に充填している。なお、符号１９は錠箱１の上壁、４２は上壁と面接合する防御プレート２１Ａの中央壁である。
【００３１】
図７を基準にすると、防御プレート２１Ａの中央壁４２は上壁に相当するが、端面或いは断面コ字型状の防御プレート２１Ａは、錠箱１の底壁（下部側）や後壁（側部側）からも嵌め込むタイプに形成することができるから、そのような場合のコ字型状防御プレート２１Ａの前記上壁４２は、下壁或いは後壁に相当する。このように構成しても、第１実施例と同一の目的を達成することができる。
【００３２】
図８及び図９に示す第３実施例に於いて、前記第１実施例と主に異なる点は、第１実施例の防御プレート２１では、プレートが第１プレート乃至第３プレートの三層構造であるが、これを一部設計変更し、二枚構造から成る防御プレート２１Ｂにしている。
【００３３】
すなわち、防御プレート２１Ｂは、第１プレート２５Ｂと、この第１プレート２５Ｂよりも肉厚（例えば３倍の厚さ）があり、かつ、所要箇所に前記第１プレートの裏面にその開口が向く横向き凹所状の収納部２８Ｂを有する第２プレート２６Ｂとから成り、収納部２８Ｂに切削工具の刃先が滑る断面円形の硬い防御部品２３を複数個並列状態に充填し、該防御プレート２１Ｂを、少なくとも錠箱１のシリンダーが装着される側の幅広側壁１４に固定している。
【００３４】
前記収納部２８Ｂは、デッドボルトを基準とする所要範囲の部位に形成されているが、第２プレート２６Ｂに全体的に形成しても良い。このように構成しても、第１実施例と同一の目的を達成することができる。なお、本発明の防御プレートの各プレートに関して、三層構造、二層構造のものをそれぞれ示したが、もちろん、一枚のプレートを適宜に折り曲げ、対向する一側壁に硬い防御部品を収納することができる空間部を形成しても均等の範囲内である。
【００３５】
また、防御プレートには、第１乃至第３嵌合孔３０．３１．２９がそれぞれ形成されているが、これらの孔は防御プレートの形状を適宜に設計変更（例えば嵌合孔の部分を弧状にカット）することができるから、本発明の本質的部分ではない。また。貫通小孔３３も固定手段（例えば溶着）如何によっては不要である。
【００３６】
【発明の効果】
以上の説明から明らかなように、本発明にあっては、デッドボルトの戻しを防止するために、防御プレートに収納部を形成し、該収納部に切削工具の刃先が滑る断面円形の硬い防御部品を複数個並列状態に充填し、該防御プレートを錠箱のシリンダーが装着される側の幅広側壁に固定したので、防犯効果が絶大である。
【００３７】
すなわち、本発明の錠箱の防御プレートでは、デッドボルトを基準とする所要範囲の部位に収納部を形成し、該収納部に切削工具の刃先が滑る断面円形の硬い防御部品を複数個並列状態に充填したので、泥棒が切削工具にて扉に孔を開け、その孔より解錠工具（針金など）を用いて施・解錠用のデッドカムを操作しようとしても、防御プレートの硬い防御部品に阻まれるから、「カム送り」を実現することはきわめて困難である。
【００３８】
このことを敷衍すれば、硬い防御部品の断面形状が切削工具の刃先が滑る円形に形成されていること、また複数個の硬い防御部品がプレートの収納部に並列状態に設けられていることから、第１プレートを破壊して硬い防御部品まで到達しても、切削工具の刃先が、いわゆる食い付き難くなり（俗に、刃先が逃げること）、その分破壊行為に時間を要するから、防犯効果が絶大である。なお、本発明にあっては、既存の錠箱をそのまま用いることができる。
【図面の簡単な説明】
図１乃至図５は本発明の第１実施例。図６及び図７は本発明の第２実施例。図８及び図９は本発明の第３実施例。
【図１】本発明の実施の形態を示す概略説明図。
【図２】防御プレートを説明するための分解図。
【図３】錠箱の幅広側壁と防御プレートとの関係を示す説明図。
【図４】錠箱と防御プレートとの関係を示す説明図。
【図５】本発明の実施の形態を示す概略説明図（錠箱の後壁側からシリンダーとの関係を示した説明図。サムターン派省略してある。）。
【図６】本発明の第２実施例を示す縦断面の概略説明図。
【図７】第２実施例の実施の形態を示す概略説明図。
【図８】本発明の第３実施例の図３と同様の説明図。
【図９】第３実施例の図４と同様の説明図。
【符号の説明】
１…錠箱、２…ケース身、３…ケース蓋、７…デッドボルト、１３…駆動腕、１４…幅広側壁、１５…シリンダー用嵌合孔、１６…シリンダー、１７…サムターン、１８…他側壁、１９…錠箱の上壁、２１．２１Ａ．２１Ｂ…防御プレート、２２．２８Ａ．２８Ｂ…収納部、２３…硬い防御部品、２５．２５Ｂ…第１プレート、２６．２６Ｂ…第２プレート、２７…第３プレート、２９…第３嵌合孔、３０…第１嵌合孔、３１…第２嵌合孔、４０．４１…対向側壁。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door lock box, and more particularly to a door lock box effective when a thief breaks the lock box using a cutting tool such as a carbide drill or a carbide hole saw.
[0002]
[Prior art]
JP-A-2003-120083 is described as a conventional example. The lock structure described in this publication uses a pliers in which a thief has a pinching portion, and forcibly “stripping” the fixed cylinder and the cylinder lock together with the decorative ring.
[0003]
However, in recent years, the thief's technique has deteriorated, and cutting tools such as carbide drills and carbide hole saws are used to cover the peripheral edge of the cylinder outer cylinder, the required part of the door, and the locking and unlocking mechanism of the lock box. A “cam feed” incident in which an attack is made on each of the wide side walls, etc., and appropriate holes are opened, and seven tools are operated using the holes to rotate the dead cam (commonly known as Dharma) drive arm in the unlocking direction. Has occurred.
[0004]
Therefore, in the case of such a “cam feed” case, it is not always perfect to take only measures for removing the cylinder, and it is necessary to take measures to protect the lock from another viewpoint.
[0005]
[Problems to be solved by the invention]
The first object of the present invention is to provide a lock box capable of protecting even when a thief attacks a lock by making a hole in the outer wall surface of a door using a carbide drill or a carbide hole saw. Thereby, “cam feed” can be prevented. The second purpose is that an existing lock box can be used as it is.
[ 0006 ]
[Means for Solving the Problems]
In the door lock box of the present invention, in order to prevent the return of the dead bolt, a storage part is formed in the defense plate, and the storage part is filled with a hard defense part having a circular cross section in which the cutting edge of the cutting tool slides, plates, a door for a lock box that lock box cylinder which is attached to at least the door is secured to the wide side wall of the side to be mounted, the protective plate, the side and the outer side of the first plate, the cylinder is mounted A second plate fixed to the wide side wall of the first plate and a third plate interposed between the first plate and the second plate, and at least a portion of the third plate in a required range based on a dead bolt. The storage portion is formed, and the storage portion is filled with a plurality of the hard defense parts in parallel with no gap .
[ 0007]
In addition, the door lock box of the present invention is formed with a storage part in the defense plate to prevent the dead bolt from returning, and the storage part is filled with a hard protective part having a circular cross section in which the cutting edge of the cutting tool slides. the-proof control plate, a door for a lock box that lock box cylinder which is attached to at least the door is secured to the wide side wall of the side to be mounted, the protective plate is formed in a U-shape form, the U-shaped Jo of forming the storage portion on at least one side wall of the opposite side walls of the protective plate, the rigid protective part is filled in parallel a plurality state without a gap on the housing part, further having a rigid protective part a-proof control plate It is characterized in that one side wall is fixedly fitted into the lock box so as to be attached to the wide side wall on which the cylinder of the lock box is mounted.
[ 0008 ]
In addition, the door lock box of the present invention is formed with a storage part in the defense plate to prevent the dead bolt from returning, and the storage part is filled with a hard protective part having a circular cross section in which the cutting edge of the cutting tool slides. the-proof control plate, a door for a lock box that lock box cylinder which is attached to at least the door is secured to the wide side wall of the side to be mounted, the protective plate includes a first plate, than the first plate The second plate has a wall-shaped second recess-shaped storage portion that faces the opening on the back surface of the first plate at a required location, and a plurality of the hard defense parts are arranged in parallel in the storage portion without any gaps. The door lock box according to the present invention is characterized in that the state is filled and the defense plate is fixed to the wide side wall to which the cylinder of the lock box is mounted.
[0009]
In the above configuration, the hard defense component is a cemented carbide pin as a cemented carbide alloy or a rod-shaped body formed by quenching carbon steel .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
First, an embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a lock box. The lock box 1 includes a case body 2 and a case lid 3 coupled to the case body through fixing means. The case body 2 has a vertically long mounting plate 4, a relatively short interposition plate 5 fixed to the inner wall surface of the mounting plate 4, and a front 6 fixed to the outer wall surface of the mounting plate 4. The fasteners for fixing the front 6, the intervening plate 5, and the mounting plate 4 and the locking mechanism of the lock are omitted since they are not directly related to the present invention.
[0011]
Reference numeral 7 denotes a dead bolt installed in the lock box 1 so as to be able to enter and exit from the mounting plate 4 and the front 6. The dead bolt 7 is guided by the window portion 8, the guide shaft 9, and the like. The dead bolt 7 has a front end portion that engages with a strike (not shown), an intermediate portion that has a horizontal long hole that engages with the guide shaft 9, a rear end portion that engages with a dead cam (commonly called Dharma) 10, and the like.
[0012]
Reference numeral 11 denotes a plurality of female screw columns fixedly provided on the case body 2, and a plurality of fixing tools are respectively screwed into the female screw columns 11.
Reference numerals 12 are receiving seats fixed to the inner wall surfaces of the case body 2 and the case lid 3 (the receiving seats on the case body 2 side are not shown), and a circular fitting is provided at the center of these receiving seats 12. A fitting portion having a hole is formed to protrude.
[0013]
Thus, the above-described cylindrical engaging portion of the dead cam 10 is rotatably fitted in the fitting hole of the receiving seat 12 (including the case body receiving seat). The dead cam 10 has a drive arm 13 extending in the radial direction from the cylindrical engagement portion, and the drive arm 13 is engaged with the rear end portion of the dead bolt 7 described above. The dead cam 7 is rotated by a driving force of a cylinder or a thumb turn that is operated by operating a key combination. As a result, the dead bolt 7 appears and disappears.
[0014]
Here, the cylinder fitting hole 15 formed in the wide side wall of the case body 2 will be described with reference to FIG. In general, a cylinder fitting hole 15 and a thumb turn fitting hole (not shown) are formed in the corners of the case body 2 of the lock box 1 and the wide side wall 14 of the case lid 3, respectively. These fitting holes are formed to have a “lantern” contour shape in appearance, and the outer cylinder end of the cylinder 16 is fitted into the fitting hole 15 on the case body 2 side.
[0015]
By the way, when the cylinder 16 operates the key combination, the driving arm 13 of the dead cam 10 rotates in the arrow direction (clockwise direction) in FIG. 1, and thus the dead bolt 7 projects in the arrow direction (locking direction).
Therefore, when there is no key, the thief uses a cutting tool (not shown) to attack the required part of the door and the wide side wall 14 of the lock box 1 to open holes and operate seven tools (wires, etc.) Thus, there is a possibility that the driving arm 13 is rotated in the direction opposite to the arrow (counterclockwise).
[0016]
Therefore, in the present invention, in order to prevent the dead bolt 7 from returning (moving in the unlocking direction), a storage portion 22 is formed on the defense plate 21 as shown in FIG. A plurality of hard defense parts 23 having a circular cross section with which the blade edge slides were filled in parallel, and the defense plate 21 was fixed to the wide side wall 14 on the side where the cylinder of the lock box 1 is mounted.
[0017]
Next, a specific configuration of the defense plate 21 will be described. FIG. 2 is an exploded view of the defense plate 21 of the present invention. 3 and 4 show the internal structure of the defense plate 21 in relation to the lock box 1.
[0018]
The defense plate 21 of the first embodiment is composed of four components as is apparent from these drawings. That is, the defense plate 21 includes a first plate 25 on the near side in FIG. 2, a second plate 26 on the other side, and an intermediate third plate interposed between the first plate 25 and the second plate 26. 27, a storage portion 22 having an arbitrary shape such as a square shape or a round shape is formed at least in a required range of the third plate 27 with reference to the dead bolt 7.
[0019]
Thus, in the present embodiment, the storage portion 22 has a step near the plate fitting hole corresponding to the cylinder fitting hole 15 of the lock box 1 (referred to as “third fitting hole 29” for convenience). A large number of rod-like bodies 23 formed by quenching carbon steel, for example, are accommodated in parallel in the rectangular opening 22. That is, many rod-shaped bodies 23 correspond to an example of the “hard defense part” of the present invention.
[0020]
The large number of rod-like bodies 23 are long and short pin-like rod-like bodies 23 as shown in FIG. The length of the rod-shaped body 23 varies from a short one to a long one corresponding to the width dimension of the rectangular opening 22. The cross-sectional shape of each rod-like body 23 is circular (perfect circle) as shown in FIG.
[0021]
The diameter of each rod-like body 23 is larger than the thickness of the first plate 25 and / or the second plate 26 corresponding to the thickness of the third plate 27. In the present embodiment, the thickness of the third plate 27 is “2 times” or “3 times” the thickness of the first plate 25 or the second plate 26, so that the diameter of the rod-like body 23 is the first plate 25 or It is “2 times” or “3 times” the thickness of the second plate 26.
[0022]
By the way, the cutting edges of cutting tools such as carbide drills and carbide hole saws used by thieves are cemented carbides made by mixing, compounding, pressing, etc. each powder of tungsten W and carbon C at a certain ratio. Therefore, the “hard defense component 23” of the present invention employs a cemented carbide pin as a cemented carbide alloy.
[0023]
Further, the first fitting hole 30 and the second fitting hole 31 corresponding to the third fitting hole 29 described above are also formed in the corner portions of the first plate 25 and the second plate 26, respectively. Further, a plurality of through small holes 33 for fixing means (caulking, fixing tool) are formed at appropriate positions on the first to third plates 25.26.27 with a predetermined interval.
[0024]
The defense plate 21 will be further described. As shown in FIG. 3, the third plate 27 having the opening 22 as a storage portion is sandwiched between the first plate 25 that can be seen from the outside and the second plate 26 that is directly fixed to the wide side wall 14 of the case body. Has been.
[0025]
Further, the hard defense component 23 accommodated in the opening 22 is a rod-shaped body formed by quenching carbon steel or a cemented carbide pin as a cemented carbide, but the first position located at least outside. The plate 25 is formed by quenching carbon steel, although the protection against cutting tools such as a carbide drill and a carbide hole saw is not sufficient, including the thickness relationship.
[0026]
Thus, the defense plate 21 is fixed to the wide side wall 14 to which the cylinder 16 of the lock box 1 is mounted in order to prevent at least the return (cam feed) of the dead bolt.
[0027]
【Example】
In the defense plate 21 of the first embodiment, the storage portion (opening) 22 of the third plate 27 sandwiched in a sandwich shape may be either square or round. The storage portion (opening) 22 is filled with a hard defense component 23 so that no gap is generated. The hard defense component 23 is disposed in a horizontal state, but may be disposed in a vertical state or an inclined state. Moreover, although the hard defense component 23 is a long rod-shaped body, it may be a short rod-shaped body or a sphere such as a pachinko ball.
[0028]
Next, in this section, the second embodiment shown in FIGS. 6 and 7 and the third embodiment shown in FIGS. 8 and 9 will be described. Since each of these embodiments has the same technical idea as the lock box 1 of the first embodiment, the same portions are denoted by the same or similar reference numerals, and redundant description is omitted.
[0029]
The second embodiment shown in FIGS. 6 and 7 is mainly different from the first embodiment in that the opposing side walls 40. A storage portion 28A is formed on at least one side wall 40 of 41, and a plurality of hard defense parts 23 having a circular cross section in which the cutting edge of the cutting tool slides are filled in parallel in the storage portion 28A. That is, one side wall 40 having the component 23 is fixedly fitted in the lock box so as to be attached to the wide side wall 14 on the side where the cylinder 16 of the lock box 1 is mounted.
[0030]
In the second embodiment, as shown in FIG. 7, the side wall 40 attached in a fitted state to the wide side wall 14 of the lock box 1 to which the cylinder 16 is attached, and the lock box 1 to which the thumb turn 17 is attached. The storage portion 28A.B is attached to both of the other side walls 41 attached to the wide side wall 18 in a fitted state. 28A, and the storage portions 28A. A plurality of rod-shaped bodies as an example of the hard defense component 23 in 28A are filled in a parallel state with no gaps. Reference numeral 19 denotes an upper wall of the lock box 1, and 42 denotes a central wall of the defense plate 21 </ b> A that is in surface contact with the upper wall.
[0031]
With reference to FIG. 7, the central wall 42 of the defense plate 21 </ b> A corresponds to the upper wall, but the defense plate 21 </ b> A having an end surface or a U-shaped cross-section has the bottom wall (lower side) and the rear wall (side) of the lock box 1. The upper wall 42 of the U-shaped defense plate 21A in such a case corresponds to a lower wall or a rear wall. Even if comprised in this way, the objective same as 1st Example can be achieved.
[0032]
The third embodiment shown in FIGS. 8 and 9 is mainly different from the first embodiment in that the defense plate 21 of the first embodiment has a three-layer structure in which the plates are a first plate to a third plate. However, a part of this is redesigned to form a defense plate 21B having a two-plate structure.
[0033]
That is, the defense plate 21B has a first plate 25B and a thickness (for example, three times as thick) as the first plate 25B, and the opening faces the rear surface of the first plate at a required location. A second plate 26B having a recess-shaped storage portion 28B. The storage portion 28B is filled with a plurality of hard defense parts 23 having a circular cross section in which the cutting edge of the cutting tool slides in parallel, and the protection plate 21B is at least It is fixed to the wide side wall 14 on the side where the cylinder of the lock box 1 is mounted.
[0034]
The storage portion 28B is formed in a portion of a required range with reference to the dead bolt, but may be formed entirely on the second plate 26B. Even if comprised in this way, the objective same as 1st Example can be achieved. In addition, regarding each plate of the defense plate according to the present invention, a three-layer structure and a two-layer structure are shown. Of course, one plate is appropriately bent and a hard defense component is stored on one opposing side wall. Even if a space portion that can be formed is formed, it is within an equivalent range.
[0035]
In addition, the first to third fitting holes 30.31.29 are formed in the defense plate, respectively, but these holes are appropriately modified in the shape of the defense plate (for example, the fitting hole portion is arcuate) This is not an essential part of the present invention. Also. The through hole 33 is not necessary depending on fixing means (for example, welding).
[0036]
【The invention's effect】
As is clear from the above description, in the present invention, in order to prevent the dead bolt from returning, a storage portion is formed on the protection plate, and the hard defense with a circular cross section in which the cutting edge of the cutting tool slides in the storage portion. Since a plurality of parts are filled in parallel and the defense plate is fixed to the wide side wall on the side where the cylinder of the lock box is mounted, the crime prevention effect is great.
[0037]
That is, in the defense plate of the lock box of the present invention, a storage portion is formed in a required range portion with reference to the dead bolt, and a plurality of hard defense components having a circular cross section in which the cutting edge of the cutting tool slides are arranged in parallel in the storage portion. Even if you try to operate the dead cam for unlocking / unlocking using a unlocking tool (such as a wire), a thief will make a hole in the door with a cutting tool. It is very difficult to achieve “cam feed” because it is blocked.
[0038]
If this is laid down, the cross-sectional shape of the hard defense part is formed in a circular shape in which the cutting edge of the cutting tool slides, and a plurality of hard defense parts are provided in parallel in the plate storage portion. Even if the first plate is destroyed and a hard defense part is reached, the cutting edge of the cutting tool becomes difficult to bite (generally, the cutting edge escapes), and the destruction action takes time, so the crime prevention effect Is enormous. In the present invention, an existing lock box can be used as it is.
[Brief description of the drawings]
1 to 5 show a first embodiment of the present invention. 6 and 7 show a second embodiment of the present invention. 8 and 9 show a third embodiment of the present invention.
FIG. 1 is a schematic explanatory diagram showing an embodiment of the present invention.
FIG. 2 is an exploded view for explaining a defense plate.
FIG. 3 is an explanatory view showing the relationship between the wide side wall of the lock box and the defense plate.
FIG. 4 is an explanatory diagram showing a relationship between a lock box and a defense plate.
FIG. 5 is a schematic explanatory view showing an embodiment of the present invention (an explanatory view showing a relationship with the cylinder from the rear wall side of the lock box; the thumb turn group is omitted).
FIG. 6 is a schematic explanatory view of a longitudinal section showing a second embodiment of the present invention.
FIG. 7 is a schematic explanatory diagram showing an embodiment of a second example.
FIG. 8 is an explanatory view similar to FIG. 3 of the third embodiment of the present invention.
FIG. 9 is an explanatory view similar to FIG. 4 of the third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lock box, 2 ... Case body, 3 ... Case lid, 7 ... Dead bolt, 13 ... Drive arm, 14 ... Wide side wall, 15 ... Cylinder fitting hole, 16 ... Cylinder, 17 ... Thumb turn, 18 ... Other side wall 19 ... Upper wall of the lock box 21.21A. 21B ... Defense plate, 22.28A. 28B: Storage part, 23: Hard defense component, 25.25B ... First plate, 26.26B ... Second plate, 27 ... Third plate, 29 ... Third fitting hole, 30 ... First fitting hole, 31 ... 2nd fitting hole, 40.41 ... Opposite side wall.

Claims

In order to prevent the dead bolt from returning, a storage portion is formed in the defense plate, and the storage portion is filled with a hard defense component having a circular cross section on which the cutting edge of the cutting tool slides, and the defense plate is attached to at least the door. a door for a lock box that the box of the cylinder is fixed to the wide side wall of the side to be mounted, the protective plate, the second to the outer side of the first plate, the cylinder is fixed to the wide side wall of the side to be attached A plate, and a third plate interposed between the first plate and the second plate, wherein the storage portion is formed in a required range of the third plate with reference to a dead bolt, and the storage A door lock box characterized in that a plurality of said hard defense parts are filled in a parallel state with no gaps .

2. The door lock box according to claim 1, wherein the hard defense component is a cemented carbide pin as a cemented carbide alloy.

The door lock box according to claim 1, wherein the hard defense part is a rod-shaped body formed by quenching carbon steel.

In order to prevent the dead bolt from returning, a storage portion is formed in the defense plate, and the storage portion is filled with a hard defense component having a circular cross section on which the cutting edge of the cutting tool slides, and the defense plate is attached to at least the door. a door for a lock box that the box of the cylinder is fixed to the wide side wall of the side to be mounted, the protective plate is formed in a U-shape form, at least one sidewall of the side walls of the U-shaped shaped protective plate the storage portion is formed, the hard protective part is filled in parallel a plurality state without a gap on the housing part, further, one side wall having a rigid protective part a-proof control plate is cylinder lock box is attached to the A door lock box, which is fixedly fitted in a lock box so as to be attached to a wide side wall.

In order to prevent the dead bolt from returning, a storage portion is formed in the defense plate, and the storage portion is filled with a hard defense component having a circular cross section on which the cutting edge of the cutting tool slides, and the defense plate is attached to at least the door. a door for a lock box that the box of the cylinder is fixed to the wide side wall of the side to be mounted, the protective plate includes a first plate, there are thicker than the first plate, and wherein the required position the It consists of a second plate having a transverse recess shaped accommodating portion facing its opening on the back surface of the first plate, and filling the hard protective component on the housing section without gaps plurality juxtaposed state, lock box to-proof control plate A lock box for doors, which is fixed to a wide side wall on which a cylinder is mounted.