JP2005194826A - Cylinder lock - Google Patents

Cylinder lock Download PDF

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Publication number
JP2005194826A
JP2005194826A JP2004004391A JP2004004391A JP2005194826A JP 2005194826 A JP2005194826 A JP 2005194826A JP 2004004391 A JP2004004391 A JP 2004004391A JP 2004004391 A JP2004004391 A JP 2004004391A JP 2005194826 A JP2005194826 A JP 2005194826A
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notch
tumbler
cylinder
key
unlocking
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JP2004004391A
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JP4478926B2 (en
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Keiji Iwata
圭司 岩田
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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 provide a cylinder lock which is improved in security against unauthentic unlocking of a lever tumbler lock or a rotary disk tumbler lock, to thereby enhance the safety thereof. <P>SOLUTION: A commercially available key duplicating tool can produce a mode of key setting by inserting a flat thin wire via a thin pipe inserted into a keyhole, into a gap between partition plates 3 of the lever tumbler lock and a lever tumbler 11, and detecting an angular position of an unlocking notch of the lever tumbler. Therefore to prevent the illegal unlocking, a shallow notch 19 is formed at least in one lever tumbler 11 at an angular position different from that of an unlocking notch 9 located at a free end outer edge, so that an outsider is led to a false recognition that the shallow notch 19 is the unlocking notch 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、シリンダ錠に係り、特に、不正解錠に対する抵抗性を高め、安全性を向上させたシリンダ錠に関する。   The present invention relates to a cylinder lock, and more particularly, to a cylinder lock with improved resistance to unauthorized unlocking and improved safety.

シリンダ錠には種々の形式のものがあるが、その一つであるレバータンブラー錠は、図1及び図2に示すように、内周面の母線に沿ってカム溝1を形成した外筒2と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板3、3を設けると共に、中心軸線に沿って鍵孔4を貫通させた内筒5と、この内筒5の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝1と係合する外側縁が外方に突出する方向に付勢されたロッキングバー6とを有している。   There are various types of cylinder locks, one of which is a lever tumbler lock, as shown in FIGS. 1 and 2, an outer cylinder 2 in which a cam groove 1 is formed along a generatrix on the inner peripheral surface. And a plurality of partition plates 3 and 3 that are rotatably fitted to the outer cylinder and are stacked in the central axis direction through a gap, and an inner cylinder 5 that penetrates the key hole 4 along the central axis line. And extending along the generatrix of the inner cylinder 5 and guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder, and the outer edge engaged with the cam groove 1 in a direction protruding outward. And a biased locking bar 6.

また、仕切板の間の各スロット7に、夫々全体の形状が略C字形で一端部を揺動自在に軸支され、鍵孔に挿入された鍵の側端縁と干渉する方向に付勢されると共に、常態では内筒を軸線方向に貫通するバックアップピン8に係止され、かつ自由端部外側端縁にロッキングバー6の内側縁を受入れる解錠切欠9を形成したレバータンブラー11が挿設されている。   Further, each slot 7 between the partition plates is substantially C-shaped as a whole and is pivotally supported at one end so as to be swingable, and is urged in a direction that interferes with the side edge of the key inserted into the key hole. At the same time, a lever tumbler 11 that is locked to a backup pin 8 that penetrates the inner cylinder in the axial direction and that has an unlocking notch 9 that receives the inner edge of the locking bar 6 at the outer edge of the free end is inserted. ing.

そして、これらのタンブラー群の夫々が鍵孔に挿通された合鍵の対応する鍵溝と係合したとき、各レバータンブラー11の解錠切欠9がロッキングバー6の内側縁と整合する(図示せず)ように構成されている。   When each of these tumbler groups is engaged with the corresponding keyway of the key inserted through the key hole, the unlocking notch 9 of each lever tumbler 11 is aligned with the inner edge of the locking bar 6 (not shown). ) Is configured as follows.

したがって、合鍵を鍵孔4に挿入して内筒5を外筒2内で相対的に回動させると、カム溝1とロッキングバー6との間に生じる楔作用による、ロッキングバー6の内筒中心軸方向への移動が可能になり、換言すればレバータンブラー錠は解錠状態となって内筒5は解錠方向に回動する。   Therefore, when the key is inserted into the key hole 4 and the inner cylinder 5 is relatively rotated in the outer cylinder 2, the inner cylinder of the locking bar 6 is caused by the wedge action generated between the cam groove 1 and the locking bar 6. In other words, the lever tumbler lock is unlocked and the inner cylinder 5 rotates in the unlocking direction.

なお、図1及び図2において、符号12はレバータンブラー11、11の一端を共通に貫通してこれらを回動自在に支承する支軸を示す。   In FIGS. 1 and 2, reference numeral 12 denotes a support shaft that penetrates one end of the lever tumblers 11 and 11 in common and rotatably supports them.

また、シリンダ錠の他の形式のものであり、本出願人が後記特許文献1によって提案したロータリーディスクタンブラー錠は、図3に示すように、中央部に鍵孔を包囲し得る大きさの鍵挿通孔13を形成した環状のロータリーディスクタンブラー14を挿設し、その実体部の1ヵ所を、内筒を軸線方向に貫通する支軸12に揺動可能に軸支すると共に、自由端部外側端縁に解錠切欠9を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔4に挿入された合鍵15のブレードの平面部又は端縁部と干渉する係合突起16を一体に突設し、各ロータリーディスクタンブラー14をこの係合突起が合鍵に近接する方向に付勢している。   Further, as shown in FIG. 3, the rotary disk tumbler lock which is another type of cylinder lock and has been proposed by the present applicant according to Patent Document 1 described later is a key having a size capable of enclosing a key hole at the center. An annular rotary disk tumbler 14 having an insertion hole 13 is inserted, and one of its substantial parts is pivotally supported on a support shaft 12 penetrating the inner cylinder in the axial direction, and outside the free end. An unlocking notch 9 is formed at the end edge, and on the other hand, at the opening end edge of the key insertion hole, the engagement trajectory of the tip interferes with the flat part or the edge part of the blade of the key 15 inserted in the key hole 4 The protrusions 16 are integrally projected, and each rotary disk tumbler 14 is urged in a direction in which the engaging protrusions are close to the key.

そして、常態ではロータリーディスクタンブラー14を内筒を軸線方向に貫通するバックアップピン8に係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪み17と係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたものである。   In a normal state, the rotary disk tumbler 14 is locked to a backup pin 8 penetrating the inner cylinder in the axial direction. On the other hand, each of the engagement protrusions of these tumbler groups is formed into a keyed blade inserted into the key hole. In addition, the unlocked cutout of each rotary disk tumbler is aligned with the inner edge of the locking bar when engaged with the corresponding recess 17.

なお、図3において符号18は係合突起16を合鍵方向に付勢する板ばねである。   In FIG. 3, reference numeral 18 denotes a leaf spring that biases the engaging protrusion 16 in the keying direction.

上記した構成のレバータンブラー錠及びロータリーディスクタンブラー錠は、作動の確実性及び使用感が優れていることから、住戸の錠前の主流になりつつある。   Lever tumbler locks and rotary disc tumbler locks having the above-described configuration are becoming mainstream before the locks of dwelling units because they are reliable and easy to use.

しかしながら、近年、後記特許文献2に記載された鍵の複製用具が提案され、かつ市販されている如くである。   However, in recent years, a key duplication tool described in Patent Document 2 described below has been proposed and seems to be commercially available.

この鍵の複製用具は、本出願人の製造販売に係る上記レバータンブラー錠用の鍵の複製用具であり、また、ロータリーディスクタンブラー錠にも適用可能である。   This key duplication tool is a key duplication tool for the lever tumbler lock according to the manufacture and sale of the applicant of the present application, and can also be applied to a rotary disc tumbler lock.

そして、この複製用具を用いると、鍵を紛失したり鍵を室内に置き忘れたまま施錠した場合に簡単に鍵の複製ができる、という効果をうたってはいるが、これを犯罪者が手にすれば、不正解錠が容易になる、換言すれば公序良俗に反する器具になる。
特開2003−226833公報 登録実用新案第3063990号公報
And with this duplication tool, there is an effect that you can easily duplicate the key if you lose the key or lock it with the key left behind in the room. For example, unauthorized unlocking becomes easier, in other words, a device that is against public order and morals.
JP 2003-226833 A Registered Utility Model No. 3063990

そこで、この発明は、上記特許文献2に記載の鍵の複製用具によって鍵違いを探られないようにしたシリンダ錠を提供し、以てシリンダ錠の安全性を高めることを目的としている。   In view of this, an object of the present invention is to provide a cylinder lock that prevents a key difference from being searched for by the key duplicating tool described in Patent Document 2 above, and thereby to increase the safety of the cylinder lock.

上記の目的を達成するため、請求項1に記載の発明は、内周面の母線に沿ってカム溝を形成した外筒と、この外筒に回転自在に嵌合し、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記内筒内に、夫々全体の形状が略C字形で一端部を支軸に揺動自在に軸支され、鍵孔に挿入された合鍵の側端縁と干渉する方向に付勢されると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止され、かつ自由端部外側端縁にロッキングバーの内側縁を受入れる解錠切欠を形成したレバータンブラーの複数を鍵孔に沿って列設し、これらのタンブラー群の夫々が鍵孔に挿通された合鍵の対応する鍵溝と係合したとき、各レバータンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたものにおいて、少なくとも1個のレバータンブラーの、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠を形成したことを特徴とする。   In order to achieve the above object, an invention according to claim 1 is characterized in that an outer cylinder having a cam groove formed along a generatrix of an inner peripheral surface, and an outer cylinder that is rotatably fitted to the outer cylinder, along the central axis. An inner cylinder that penetrates the key hole and an outer edge that extends along the generatrix of the inner cylinder and that is guided to move radially in the outer periphery of the inner cylinder, and that engages with the cam groove. And a locking bar biased in the direction of projecting in the direction, and each of the inner cylinders is substantially C-shaped and is pivotally supported with one end pivoted on a support shaft and inserted into a key hole. It is urged in a direction that interferes with the side edge of the formed key, and is normally locked to a backup pin that passes through the inner cylinder in the axial direction, and receives the inner edge of the locking bar at the outer edge of the free end. A plurality of lever tumblers with unlocked cutouts are arranged along the keyholes. In which the unlocking cutout of each lever tumbler is aligned with the inner edge of the locking bar when engaged with the corresponding keyway of the key inserted through the keyhole, A shallow notch is formed at an angular position different from the unlocked notch at the outer edge of the free end portion.

また、請求項2に記載の発明は、内周面の母線に沿ってカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成した環状のロータリーディスクタンブラーを挿設し、その実体部の1ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたものにおいて、少なくとも1個のロータリーディスクタンブラーの、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠を形成したことを特徴とする。   According to the second aspect of the present invention, an outer cylinder in which a cam groove is formed along a generatrix of the inner peripheral surface, and the outer cylinder is rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap. A plurality of partition plates are provided, and an inner cylinder that penetrates the key hole along the central axis, and extends along a generatrix of the inner cylinder, and is guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder. And a locking bar urged in a direction in which an outer edge engaged with the cam groove protrudes outward, and each slot between the partition plates has a size that can surround the key hole in the center portion. An annular rotary disk tumbler with a key insertion hole is inserted, and one of its substantial parts is pivotally supported on a pivot that penetrates the inner cylinder in the axial direction, and the outer edge of the free end An unlocking notch is formed in the opening of the key insertion hole, while the movement trajectory of the tip is inserted into the key hole. Engagement projections that interfere with the flat portion or edge of the key lock blade are integrally projected, and each rotary disk tumbler is urged in the direction in which the engagement projection approaches the key lock, and in the normal state, the inner cylinder Each of the rotary projections of the tumbler group is engaged with a corresponding recess formed on the key blade inserted through the key hole. In such a manner that the unlocking notch of the disc tumbler is aligned with the inner edge of the locking bar, the shallow notch is at a different angular position from the unlocking notch at the outer edge of the free end of at least one rotary disc tumbler. It is formed.

上記のように構成されたこの発明によるシリンダ錠は、鍵孔から薄平の細線を入れ、この細線を仕切板とレバータンブラーとの隙間からタンブラーの自由端側に差込み、その解錠切欠の角度位置を探る上記特許文献1に記載の鍵の複製用具のを使用する際、浅い切欠を解錠切欠と誤認させるので、悪意の第三者による合鍵の複製を防止することができ、シリンダ錠の安全性を格段に高めることができる。   The cylinder lock according to the present invention configured as described above is inserted into a thin thin wire from the keyhole, and the thin wire is inserted into the free end side of the tumbler from the gap between the partition plate and the lever tumbler, and the angle of the unlocking notch When using the key duplicating tool described in Patent Document 1 to search for the position, a shallow notch is misidentified as an unlocked notch, so that it is possible to prevent duplication of a duplicate key by a malicious third party. Safety can be greatly improved.

少なくとも1個のレバータンブラー或いはロータリーディスクタンブラーの、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠を形成したので、薄平の細線による合鍵の複製を防止することができ、また、その実施も容易である。   A shallow notch is formed at a different angular position from the unlocked notch on the outer edge of the free end of at least one lever tumbler or rotary disc tumbler. Moreover, the implementation is also easy.

図4において符号11はレバータンブラーを示し、このレバータンブラー11の、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠19が形成されている。   In FIG. 4, reference numeral 11 denotes a lever tumbler, and a shallow notch 19 is formed at an angular position different from the unlocking notch on the outer edge of the lever tumbler 11.

この浅い切欠の幅、すなわち、レバータンブラー11の自由端部外側端縁の円周方向の寸法は、例えば解錠切欠の幅程度、或いはこれよりも広くなるように設定する。   The width of this shallow notch, that is, the dimension in the circumferential direction of the outer edge of the free end portion of the lever tumbler 11 is set to be, for example, about the width of the unlocking notch or wider.

それは、浅い切欠の幅を過小に設定すると、前記鍵の複製用具を使用するとき解錠切欠9ではないと検知されてしまう恐れがあるからである。   This is because if the width of the shallow notch is set too small, it may be detected that it is not the unlocking notch 9 when the key duplication tool is used.

また、図5に示すように、上記浅い切欠19の底部に外側に向かって先細りになるテーパ部21が形成されている。   As shown in FIG. 5, a tapered portion 21 that is tapered outward is formed at the bottom of the shallow notch 19.

上記のように構成されたこの発明の一実施例によるシリンダ錠は、図4及び図5に示すように先端をL字形に曲げた細いパイプ22を鍵孔4内に差込み、パイプ22を通して薄平の細線を仕切板3に押圧するようにして繰り出し、次いでパイプ22を回して細線をタンブラーと仕切板との間に隙間に差し込むと共に解錠切欠9の一を検知しようとしても、浅い切欠19を解錠切欠9と誤認するので、完全な合鍵を得ることができない。なお、ここで合鍵とはスペアキーをいうものとする。   As shown in FIGS. 4 and 5, the cylinder lock according to the embodiment of the present invention constructed as described above is inserted into the key hole 4 with a thin pipe 22 bent at the tip in an L-shape, and is thinned through the pipe 22. The thin wire is pushed out against the partition plate 3, and then the pipe 22 is turned to insert the thin wire into the gap between the tumbler and the partition plate and to detect one of the unlocking cutouts 9; Since it is mistaken for the unlocking notch 9, a complete key cannot be obtained. Here, the combined key is a spare key.

浅い切欠19を解錠切欠9と誤認して合鍵を作ると、ロッキングバー6が完全にはカム溝1から脱出することができず、したがってシリンダ錠を解錠できないことは言うまでもない。   Needless to say, if the shallow notch 19 is mistakenly recognized as the unlocking notch 9 to make a key, the locking bar 6 cannot be completely removed from the cam groove 1, and therefore the cylinder lock cannot be unlocked.

また、浅い切欠の底部にテーパ部21を形成しておくと、図5から明らかなように、解錠切欠9の位置を探る上記偏平の細線から見た浅い切欠の深さが増大するので、浅い切欠19と解錠切欠9との区別がますますつかなくなる。   Further, if the tapered portion 21 is formed at the bottom of the shallow notch, as is apparent from FIG. 5, the depth of the shallow notch as seen from the flat thin line that searches for the position of the unlocking notch 9 increases. The distinction between the shallow notch 19 and the unlocking notch 9 becomes increasingly difficult.

なお、上記した浅い切欠19を全てのレバータンブラー11に形成することは必要ではない。それは、解錠切欠9の角度位置が一つでも不明ならば合鍵を完成することができないからである。   In addition, it is not necessary to form the above-mentioned shallow notch 19 in all the lever tumblers 11. This is because the key cannot be completed if even one angular position of the unlocking notch 9 is unknown.

図3に示すロータリーディスクタンブラー錠において、ロータリーディスクタンブラー14の自由端部外側端縁に浅い切欠を形成でき、更に、その機能、効果は図4及び図5に示すものと同様であることは明らかであるから、更に詳細な説明及び図示を省略する。   In the rotary disk tumbler lock shown in FIG. 3, it is clear that a shallow notch can be formed on the outer edge of the free end of the rotary disk tumbler 14, and the function and effect thereof are the same as those shown in FIGS. Therefore, further detailed description and illustration are omitted.

レバータンブラー錠の縦断面図。The longitudinal cross-sectional view of a lever tumbler lock. レバータンブラー錠の横断面図。The cross-sectional view of a lever tumbler lock. ロータリーディスクタンブラー錠の横断面図。A cross-sectional view of a rotary disc tumbler tablet. 請求項1に記載の発明の要部を示すレバータンブラー錠の横断面図。The cross-sectional view of the lever tumbler lock which shows the principal part of invention of Claim 1. レバータンブラーの自由外側端縁の浅い切欠の断面図。Sectional drawing of a shallow notch at the free outer edge of the lever tumbler. レバータンブラー錠の一部拡大従断面図。The partially expanded secondary sectional view of a lever tumbler lock.

符号の説明Explanation of symbols

1 カム溝
2 外筒
3 仕切板
4 鍵孔
5 内筒
6 ロッキングバー
7 スロット
8 バックアップピン
9 解錠切欠
11 レバータンブラー
12 支軸
13 鍵挿通孔
14 ロータリーディスクタンブラー
15 合鍵
16 係合突起
17 窪み
19 浅い切欠
21 テーパ部
DESCRIPTION OF SYMBOLS 1 Cam groove 2 Outer cylinder 3 Partition plate 4 Key hole 5 Inner cylinder 6 Locking bar 7 Slot 8 Backup pin 9 Unlocking notch 11 Lever tumbler 12 Support shaft 13 Key insertion hole 14 Rotary disk tumbler 15 Key 16 Engagement protrusion 17 Depression 19 Shallow notch 21 taper

Claims (4)

内周面の母線に沿ってカム溝を形成した外筒と、この外筒に回転自在に嵌合し、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記内筒内に、夫々全体の形状が略C字形で一端部を支軸に揺動自在に軸支され、鍵孔に挿入された合鍵の側端縁と干渉する方向に付勢されると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止され、かつ自由端部外側端縁にロッキングバーの内側縁を受入れる解錠切欠を形成したレバータンブラーの複数を鍵孔に沿って列設し、これらのタンブラー群の夫々が鍵孔に挿通された合鍵の対応する鍵溝と係合したとき、各レバータンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたものにおいて、少なくとも1個のレバータンブラーの、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠を形成したことを特徴とするシリンダ錠。   An outer cylinder in which a cam groove is formed along the generatrix of the inner peripheral surface, an inner cylinder that is rotatably fitted to the outer cylinder and penetrates the key hole along the central axis, and along the generatrix of the inner cylinder A locking bar that is guided in a radially movable manner at the outer peripheral portion of the inner cylinder and that is biased in a direction in which an outer edge engaged with the cam groove protrudes outwardly, Each of the inner cylinders is substantially C-shaped, and is pivotally supported with one end pivotably supported by a support shaft. The inner cylinder is urged in a direction that interferes with the side edge of the key combination inserted into the key hole. In a normal state, a plurality of lever tumblers that are locked by a backup pin that penetrates the inner cylinder in the axial direction and that has an unlocking notch for receiving the inner edge of the locking bar at the outer edge of the free end are arranged along the key hole. Each of these tumbler groups engaged with the corresponding keyway of the key inserted through the keyhole The unlocking notch of each lever tumbler is aligned with the inner edge of the locking bar, and at least one lever tumbler is shallow at a different angular position from the unlocking notch at the outer edge of the free end. A cylinder lock characterized by forming a notch. 内周面の母線に沿ってカム溝を形成した外筒と、この外筒に回転自在に嵌合し、間隙を介して中心軸線方向に積層された複数の仕切板を設けると共に、中心軸線に沿って鍵孔を貫通させた内筒と、この内筒の母線に沿って延在し、内筒の外周部において半径方向に移動可能に案内されると共に、上記カム溝と係合する外側縁が外方に突出する方向に付勢されたロッキングバーとを有し、上記仕切板の間の各スロットに、中央部に鍵孔を包囲し得る大きさの鍵挿通孔を形成した環状のロータリーディスクタンブラーを挿設し、その実体部の1ヵ所を、内筒を軸線方向に貫通する支軸に揺動可能に軸支すると共に、自由端部外側端縁に解錠切欠を形成し、一方、鍵挿通孔の開口端縁に、先端の移動軌跡が鍵孔に挿入された合鍵のブレードの平面部又は端縁部と干渉する係合突起を一体に突設し、各ロータリーディスクタンブラーをこの係合突起が合鍵に近接する方向に付勢すると共に、常態では内筒を軸線方向に貫通するバックアップピンに係止し、他方、これらのタンブラー群の係合突起の夫々が鍵孔に挿通された合鍵のブレードに形成された対応する窪みと係合したとき、各ロータリーディスクタンブラーの解錠切欠がロッキングバーの内側縁と整合するようにしたものにおいて、少なくとも1個のロータリーディスクタンブラーの、自由端部外側端縁における解錠切欠とは異なる角度位置に、浅い切欠を形成したことを特徴とするシリンダ錠。   An outer cylinder formed with a cam groove along the generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap are provided. And an outer edge that extends along the generatrix of the inner cylinder and is guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder and engages with the cam groove An annular rotary disk tumbler having a locking bar biased in the outward projecting direction and having a slot for inserting a key hole in the center of each slot between the partition plates. Is inserted, and one portion of the substantial part is pivotally supported on a support shaft penetrating the inner cylinder in the axial direction, and an unlocking notch is formed on the outer edge of the free end, The flat part of the blade of the key that the movement trajectory of the tip is inserted into the key hole at the opening edge of the insertion hole Is a backup pin that integrally protrudes an engaging projection that interferes with the edge, and urges each rotary disk tumbler in a direction in which the engaging projection approaches the key, and normally penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. Cylinder characterized in that a shallow notch is formed at an angular position different from the unlocking notch at the outer edge of the free end of at least one rotary disc tumbler, in alignment with the inner edge of the bar Tablets. 上記浅い切欠の幅を解錠切欠と同程度に設定した請求項1又は2に記載のシリンダ錠。   The cylinder lock according to claim 1 or 2, wherein a width of the shallow notch is set to be about the same as an unlocked notch. 上記浅い切欠の底部を外側に向かって先細りになるテーパ状に成形した請求項1又は2に記載のシリンダ錠。   The cylinder lock according to claim 1 or 2, wherein the bottom of the shallow notch is formed in a tapered shape that tapers outward.
JP2004004391A 2004-01-09 2004-01-09 Cylinder lock Expired - Fee Related JP4478926B2 (en)

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