JP2007303192A - Variable cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a variable cylinder lock which dispenses with provision of a number of additional variable keys for changing a duplicate key, and can easily change the duplicate key with an opening/closing door kept closed, by operating the cylinder lock from outside. <P>SOLUTION: According to the structure of the variable cylinder lock, even if a reference key K is inserted into a key insertion groove 20 in an initial insertion position and turned to a variable operation position, a hooking projection 5 of the reference key assuming the variable operating position hitches with a slipout prevention portion 43 of a rotary body (change disk) 40 which is locked and assumes a locking position and the initial insertion position, and therefore withdrawal of the reference key is inhibited. Thus by turning only the reference key to the variable operating position, its withdrawal/insertion operation in the variable operating position is disabled. On the other hand, if the reference key is turned to the variable operation position after fitting between a lock pin (projection) 54 and a lock hole (hole) 51 is disengaged by operating an attachment A to cancel rotation inhibition of the rotary body, the rotary body is turned to the variable operation position together with the reference key in one body while an insertion portion 2 is kept engaged with an engaging recess 42. Thus the reference key can be withdrawn/inserted via the engaging recess to be variable into a new variable key. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動販売機等の開閉扉の施解錠手段として使用されるシリンダ錠で、特に合鍵として施解錠に使用する基準の鍵を必要に応じて変更することができる可変式シリンダ錠に関する。   The present invention relates to a cylinder lock used as a locking / unlocking means for an opening / closing door of a vending machine or the like, and more particularly to a variable cylinder lock that can change a reference key used for locking / unlocking as a joint key as necessary.

一般に、この種の可変式シリンダ錠は、たとえば自動販売機の開閉扉を開錠し、本来は正当に料金を回収する集金担当者が不正を行うのを予防する目的で、施解錠に使用する合鍵の基準キーを変更できる構造になっているが、従来の可変式シリンダ錠の中には、合鍵として使う基準キーの他に変更操作用に可変キーを別途に多数用意する必要がない構造にしたものがある（特許文献１参照）。   In general, this type of variable cylinder lock is used for locking and unlocking, for example, to unlock the door of a vending machine and to prevent fraudulent operations by a collector who normally collects charges. The structure is such that the reference key of the key combination can be changed, but in the conventional variable cylinder lock, there is no need to prepare a large number of variable keys separately for the change operation in addition to the reference key used as a key combination. (See Patent Document 1).

この従来の可変式シリンダ錠は、シリンダに対し軸芯に沿って鍵挿入溝が設けられたプラグを嵌合し、該プラグを、シリンダに対しその外周部からピン穴を通して出入りするピン群のシアライン形成に応じて回動可又は否とするピンシリンダ錠で、シリンダには、外周部に軸芯に向け貫通する複数のピン穴を軸芯方向に列設したピン穴列を鍵の初期抜差し位置に設け、その初期抜差し位置から周方向へ所定の回動角度離隔した鍵の可変操作位置にも同様に複数のピン穴を軸芯方向に列設したピン穴列を並設する一方、プラグには、それがシリンダに対し初期抜差し位置又は可変操作位置にあるとき、シリンダ側のピン穴列の各ピン穴と連通する同数一列のピン穴列を径方向に設け、いま合鍵として使用する基準鍵を鍵挿入溝に差し込んでプラグを可変操作位置に回動させてから、その可変操作位置で抜き差し、基準鍵から所望の変更鍵に差し換えて該変更鍵と対応するピン群の組合せに変えることにより合鍵を変更する構造になっている。
特開２００２−４６５７号公報 In this conventional variable cylinder lock, a plug having a key insertion groove provided along the axis of the cylinder is fitted to the cylinder, and the plug is inserted into and out of the cylinder from the outer peripheral portion thereof through a pin hole. A pin cylinder lock that can be rotated or not according to its formation. The cylinder has a pin hole row in which a plurality of pin holes penetrating toward the shaft core in the outer peripheral portion are arranged in the axial direction. Similarly, a pin hole row in which a plurality of pin holes are arranged in the axial direction is arranged in parallel at the variable operation position of the key that is spaced from the initial insertion / removal position in the circumferential direction by a predetermined rotation angle. When the cylinder is in the initial insertion / removal position or variable operation position with respect to the cylinder, the same number of pin hole rows communicating with the respective pin holes of the cylinder side pin hole row are provided in the radial direction, and the reference key is now used as a joint key. Into the key insertion slot Is turned to a variable operation position, and then is inserted / removed at the variable operation position, the reference key is changed to a desired change key, and the change key is changed to a combination of pins corresponding to the change key. Yes.
JP 2002-4657 A

ところで、一般のシリンダ錠において、プラグには、その先端部に、シリンダに対する回動範囲を上記初期抜差し位置から所定角度（例えば９０度）の範囲に規制する板カムがナット等の固着具で嵌脱自在に嵌着されている。そこで、上記従来の可変式シリンダ錠では、合鍵を、いま施解錠に使用する基準鍵から他の鍵に変えるときに、基準鍵を鍵挿入溝に差し込んでプラグを可変操作位置の方向へ回動させるためには、いったん開閉扉を開けてから、前記ナット等の固着具を緩めて板カムによるプラグの回動規制を解除し、しかる後にプラグを可変操作位置へ回動し、その可変操作位置で抜き差して基準鍵から変更鍵に差し換える作業が必要であった。しかし、これでは、合鍵を変更するときは、その都度、いちいち開閉扉を開けてから、板カムによるプラグの回動規制状態を解除する一連の作業が必要であるため、それだけ合鍵の変更作業が著しく面倒であるという課題があった。   By the way, in a general cylinder lock, a plate cam that regulates a rotation range with respect to the cylinder within a predetermined angle (for example, 90 degrees) from the initial insertion / removal position is fitted to a plug with a fastener such as a nut. Removably fitted. Therefore, in the above conventional variable cylinder lock, when the key is changed from the reference key used for locking / unlocking to another key, the reference key is inserted into the key insertion groove and the plug is rotated in the direction of the variable operation position. To open the door, once open the door, loosen the fasteners such as nuts, release the plug rotation restriction by the plate cam, then rotate the plug to the variable operation position, the variable operation position It was necessary to replace the reference key with the change key. However, in this case, each time the key is changed, it is necessary to open the doors one after another and then perform a series of operations to release the plug rotation restriction state by the plate cam. There was a problem that it was extremely troublesome.

そこで、本発明の目的は、別途に合鍵変更用の可変鍵を多数用意する必要がなく、しかも、開閉扉を閉めたまま外部操作で簡単に合鍵を可変とする可変式シリンダ錠を提供することにある。   Therefore, an object of the present invention is to provide a variable cylinder lock that does not require a large number of variable keys for changing the key separately and that can be easily changed by an external operation while the door is closed. It is in.

そこで、上記目的を達成すべく、請求項１に記載の発明は、たとえば以下に示す図示実施の形態のとおり、軸芯に沿って鍵挿入溝２０を有したプラグＰを筒状シリンダＣに嵌合し、該シリンダＣに対し前記プラグＰをピン群によるシアライン形成に応じて回動可又は否とするシリンダ錠であって、前記シリンダＣには、その軸芯に向け貫通する複数のピン穴１２…を長さ方向に列設した第１のピン穴列α・β・γを合鍵の初期抜差し位置に設けると共に、初期抜差し位置から周方向へ所定の回動角度離隔した合鍵の可変操作位置に同様に複数のピン穴１４…を長さ方向に列設した第２のピン穴列α´・β´・γ´を並設する一方、前記プラグＰには、それが初期抜差し位置又は可変操作位置にあるとき、前記シリンダ側の第１又は第２のピン穴列の各ピン穴と連通する複数のピン穴１９…を列設した第３のピン穴列２５を前記鍵挿入溝２０に向けて設け、いま合鍵として使用する基準鍵Ｋを初期抜差し位置で前記鍵挿入溝２０に差し込んで前記プラグＰを可変操作位置へ回動してから、その可変操作位置で抜き差して前記基準鍵Ｋから変更鍵Ｋ´に差し換え、該変更鍵Ｋ´と対応するピン群の組合せに変更することにより合鍵を可変とする可変式シリンダ錠において、前記合鍵は、摘み部１から前記第１および第２のピン穴列のピン群と対応する形状にカギ山３が刻設された細長板状の差込み部２を延設し、その差込み部２の幅方向に掛止め凸部５を突設する一方、前記プラグＰの頭部２１に、前記シリンダＣに被せる保護キャップ３０を、その鍵通し穴３１を前記プラグＰの鍵挿入溝２０に合わせて取り付け、これら保護キャップ３０と前記シリンダＣ間に鍵抜差し制御手段Ｒを配設し、該鍵抜差し制御手段Ｒは、チェンジディスク４０のような回転体と、初期抜差し位置で前記プラグＰの鍵挿入溝２０に前記合鍵を差し込んだとき、ロックピン５４とロック穴５１のような突起と穴の嵌め合いで前記回転体の回転を規制する一方、アタッチメントＡのような外部操作部材の操作で前記突起と前記穴の嵌め合いが外されると、前記回転体の回転規制を解除して前記回転体を前記合鍵と一体に可変操作位置へ回転可能とする回転制御部５０とを備え、前記回転体は、初期抜差し位置にある前記プラグＰの鍵挿入溝２０に前記合鍵を差し込むと、該合鍵の差込み部２が係合する係合凹部４２を穴縁に設けた鍵挿通穴４１と、前記回転制御部５０によって初期抜差し位置で回転規制状態にあるとき、その初期抜差し位置で前記合鍵のみを可変操作位置へ回動させると、その可変操作位置では、前記掛止め凸部５が引っ掛かって前記合鍵の引き抜きを規制する抜け止め部４３と、を備えてなることを特徴とする。   Therefore, in order to achieve the above object, the invention described in claim 1 is configured such that, for example, as shown in the embodiment shown below, a plug P having a key insertion groove 20 along the axis is fitted into the cylindrical cylinder C. A cylinder lock that allows or disengages the plug P with respect to the cylinder C in accordance with the formation of a shear line by a group of pins, and the cylinder C has a plurality of pin holes penetrating toward the axis. The first pin hole row α, β, γ in which 12... Are arranged in the length direction is provided at the initial insertion / removal position of the key, and the variable operation position of the key is separated from the initial insertion / removal position by a predetermined rotation angle in the circumferential direction. Similarly, the second pin hole row α ′, β ′, γ ′ in which a plurality of pin holes 14 are arranged in the length direction is juxtaposed, while the plug P has an initial insertion / removal position or variable. When in the operating position, the first or second pin hole row on the cylinder side A third pin hole row 25 in which a plurality of pin holes 19 communicated with the pin holes are provided facing the key insertion groove 20, and a reference key K used as a key is now inserted in the key insertion groove at an initial insertion / removal position. 20 and the plug P is rotated to the variable operation position, and then inserted / removed at the variable operation position to replace the reference key K with the change key K ′, and to the combination of the pin group corresponding to the change key K ′. In the variable cylinder lock that can change the key by changing the key, the key is an elongated shape in which a key mountain 3 is engraved in a shape corresponding to the pin group of the first and second pin hole rows from the knob 1. A plate-like insertion portion 2 is extended, and a latching convex portion 5 is projected in the width direction of the insertion portion 2, while a protective cap 30 that covers the cylinder C is placed on the head 21 of the plug P. The key passage hole 31 is inserted into the key insertion groove 20 of the plug P. In addition, a key insertion / removal control means R is disposed between the protective cap 30 and the cylinder C. The key insertion / removal control means R is connected to a rotating body such as a change disk 40 and the plug P at the initial insertion / removal position. When the key is inserted into the key insertion groove 20, the rotation of the rotating body is restricted by the fitting of the projection and the hole such as the lock pin 54 and the lock hole 51, while the external operation member such as the attachment A is operated. A rotation control unit 50 for releasing the rotation restriction of the rotating body and allowing the rotating body to rotate together with the key to a variable operation position when the protrusion and the hole are disengaged; When the rotary body inserts the key into the key insertion groove 20 of the plug P at the initial insertion / removal position, a key insertion hole 41 provided with an engagement recess 42 that engages with the insertion portion 2 of the key, The rotation When the control unit 50 is in a rotation-restricted state at the initial insertion / removal position, when only the key is rotated to the variable operation position at the initial insertion / removal position, the latching convex portion 5 is caught at the variable operation position, and the lock And a retaining portion 43 for restricting the pulling out.

請求項２に記載の発明は、請求項１に記載の可変式シリンダ錠において、たとえば以下に示す図示実施の形態のとおり、前記鍵抜差し制御手段Ｒは、前記回転体の回転角度範囲を初期抜差し位置と可変操作位置間の前記所定回動角度に規制する回転角度規制部４５を備えてなることを特徴とする。   According to a second aspect of the present invention, in the variable cylinder lock according to the first aspect, for example, as shown in the embodiment shown below, the key insertion / removal control means R sets the rotation angle range of the rotating body to an initial insertion / removal. A rotation angle restricting portion 45 that restricts the predetermined rotation angle between the position and the variable operation position is provided.

請求項３に記載の発明は、請求項１又は２に記載の可変式シリンダ錠において、たとえば以下に示す図示実施の形態のとおり、前記外部操作部材は、前記合鍵の前記差込み部２を貫通させて前記摘み部１を挟んで保持する鍵保持穴６４を備えると共に、前記突起と前記穴の嵌め合いを外して前記回転体の回転規制を解除する押圧突起６６を、前記鍵保持穴６４と平行に突設したアタッチメントＡで構成してなることを特徴とする。   According to a third aspect of the present invention, in the variable cylinder lock according to the first or second aspect, for example, as in the illustrated embodiment shown below, the external operation member allows the insertion portion 2 of the key to pass through. The key holding hole 64 that holds the knob 1 in between is provided, and the pressing protrusion 66 that releases the fitting of the protrusion and the hole to release the rotation restriction of the rotating body is parallel to the key holding hole 64. It is characterized by comprising an attachment A protruding from the top.

請求項１に記載の発明によれば、合鍵を基準鍵から他の鍵に不正に変更しようとして、合鍵の初期抜差し位置において、基準鍵を鍵挿入溝に差し込みプラグを回動して可変操作位置へ移動させたとしても、可変操作位置では、基準鍵の掛止め凸部が、ロック状態のまま初期抜差し位置にある回転体の抜け止め部に引っ掛かり、基準鍵の引き抜きが規制され、これにより、基準鍵のみを、そのように可変操作位置へただ回動するだけでは、その可変操作位置で基準鍵を抜き差し操作できないので、勝手に合鍵を変更することはできない。一方で、正規に合鍵の基準鍵を変更するときは、開閉扉を閉止状態のまま外側から、外部操作部材を使った外部操作で合鍵を可変する。そのときは、外部操作部材の操作で突起と穴の嵌め合いを外して回転体の回転規制を解除してから、基準鍵を可変操作位置へ回動させると、基準鍵の差込み部が係合凹部に係合したまま回転体は基準鍵と一体に可変操作位置へ回転するため、基準鍵は係合凹部を通して抜き差しが可能となり、これによって、基準鍵から新たな変更鍵に差し換えて合鍵を変更可能な状態にする。こうして本発明によれば、従来の如く、別途に合鍵変更用の可変キーを多数用意する必要がなく、しかも、合鍵変更時のたびに、いちいち開閉扉を開けてから、回動規制用の板カムによるプラグの回動規制状態を解除するような面倒な作業が必要でなくなり、開閉扉を閉止状態にしたまま、外側から、簡単な外部操作で合鍵を変更することができる。   According to the first aspect of the invention, in order to illegally change the combined key from the reference key to another key, the reference key is inserted into the key insertion groove and the plug is rotated at the variable operation position at the initial insertion / removal position of the combined key. Even in the variable operation position, the locking projection of the reference key is hooked on the retaining portion of the rotating body at the initial insertion / removal position in the locked state, and the extraction of the reference key is restricted. Only by rotating the reference key only to the variable operation position in this manner, the reference key cannot be inserted / removed at the variable operation position, so that the combined key cannot be changed without permission. On the other hand, when the reference key of the key is properly changed, the key is changed by an external operation using an external operation member from the outside while the door is closed. At that time, the protrusion of the protrusion and the hole are removed by operating the external operation member, the rotation restriction of the rotating body is released, and then the reference key is turned to the variable operation position, so that the insertion portion of the reference key is engaged. Since the rotating body rotates together with the reference key to the variable operation position while being engaged with the recess, the reference key can be inserted / removed through the engagement recess, thereby changing the combined key by replacing the reference key with a new change key. Make it possible. Thus, according to the present invention, it is not necessary to separately prepare a large number of variable keys for changing the key as in the prior art. The troublesome work of releasing the rotation restriction state of the plug by the cam is no longer necessary, and the key can be changed from the outside by a simple external operation while the door is closed.

請求項２に記載の発明によれば、回転体を回転規制を解除して合鍵と一緒に、初期抜差し位置から所定の回動角度離れた可変操作位置へ回転させるとき、回転角度規制部で回転体の回転を可変操作位置に止めて、簡単に且つ正確に位置決めることができる。   According to the second aspect of the present invention, when the rotating body is released from the rotation restriction and rotated together with the key to the variable operation position separated from the initial insertion / removal position by the predetermined rotation angle, the rotation body is rotated by the rotation angle restriction portion. The rotation of the body can be stopped at the variable operation position and can be positioned easily and accurately.

請求項３に記載の発明によれば、合鍵の差込み時、アタッチメントの押圧突起で押して突起と穴の嵌め合いを外し、これにより、回転体の回転規制を簡単に且つ適確に解除することができる。しかも、このアタッチメントを、たとえば所有者など責任ある管理者等が一括に管理することにすれば、不正の行われ易い自動販売機等の開閉扉の合鍵を勝手に変更することを予防することができる。   According to the third aspect of the present invention, when the key is inserted, it is pushed with the pressing protrusion of the attachment to release the fitting between the protrusion and the hole, and thereby the rotation restriction of the rotating body can be easily and accurately released. it can. Moreover, if this attachment is managed collectively by a responsible manager such as the owner, for example, it is possible to prevent the opening / closing door of a vending machine or the like that is likely to be fraudulently changed. it can.

以下、図面を参照しつつ、本発明の最良の実施形態について説明する。   Hereinafter, the best embodiment of the present invention will be described with reference to the drawings.

図１は、本発明の一例である可変式シリンダ錠の分解斜視図、図２（ａ）は鍵非挿入時のシリンダ錠の側面図、（ｂ）は縦断面図、（ｃ）はシリンダ錠を先端側から見て示す端面図である。図示シリンダ錠は、外筒のシリンダＣと、内筒のプラグＰと、ピン群ｐ１〜ｐ６を有したシリンダ錠本体に対し、シリンダ錠本体の施解錠に使用する合鍵と、合鍵をいま使用中の基準鍵Ｋから所望の変更鍵に変えるときに用いるアタッチメント（外部操作部材）Ａを備えた構成になっている。   1 is an exploded perspective view of a variable cylinder lock as an example of the present invention, FIG. 2 (a) is a side view of the cylinder lock when the key is not inserted, (b) is a longitudinal sectional view, and (c) is a cylinder lock. It is an end elevation which sees seeing from the front end side. The cylinder lock shown in the figure is currently used for the cylinder lock body with the outer cylinder C, the inner cylinder plug P, and the cylinder lock body with the pin groups p1 to p6. It is the structure provided with the attachment (external operation member) A used when changing from the reference | standard key K of this to a desired change key.

図示シリンダ錠に使用する合鍵は、図１に基準鍵Ｋを例に示すとおり、幅広な板状の摘み部１から細長板状の差込み部２を延設し、合鍵の複製防止上、鍵通りを増やすために、差込み部２の両側板面と角縁にもカギ山３を刻設したディンプル型のキーである。そして、本発明で使用する合鍵は、特に、差込み部２において摘み部１寄りの根元側に、逃げ凹部４を削設すると共に、その逃げ凹部４の先端側に隣接して掛止め凸部５を幅方向に突設してなる。   As shown in FIG. 1, the key used for the cylinder lock shown in FIG. 1 extends from the wide plate-like knob 1 to the elongated plate-like insertion portion 2 to prevent duplication of the key. In order to increase this, the key is a dimple-type key in which the key 3 is engraved on both side plate surfaces and corner edges of the insertion portion 2. The key to be used in the present invention has a relief recess 4 on the base side near the knob 1 in the insertion portion 2 and a latching projection 5 adjacent to the distal end side of the relief recess 4. Projecting in the width direction.

一方、シリンダＣは、略筒状をなす外周部１０の軸芯にプラグ貫通穴１１を穿設する一方、外周面には、鍵抜差し方向手前の基端寄りに順次、リング嵌込み溝１０ａとキャップ受け鍔部１０ｂをそれぞれ環状に形成してなる。また、外周面には（図２・図３も参照）、施解錠時に合鍵を抜き差しする一定の初期抜差し位置に、キャップ受け鍔部１０ｂから鍵抜差し方向先端に至る長さ方向に、細長い浅底な蟻溝形の第１の凹溝１０ｃを、上記合鍵の差込み部２の両側板面と片側角縁の３箇所に有したカギ山３に対応させて、周方向に間隔をあけて３列並設している。３列の第１の凹溝１０ｃには、それぞれ軸芯に向け貫通するピン穴１２…を複数列設して第１のピン穴列α・β・γを形成している。更に、外周面には、各々の第１の凹溝１０ｃから、周方向へ所定の回動角度（例えば３５度）離隔した合鍵の可変操作位置に、第１の凹溝１０ｃとそれぞれ平行に第２の凹溝１０ｄを並設し、これら第２の凹溝１０ｄに、それぞれ軸芯に向け貫通するピン穴１４…を、同様に複数列設して第２のピン穴列α´・β´・γ´を形成している。そして、合計６列のピン穴列α・β・γ、α´・β´・γ´のピン穴１２・１４には、それぞれピン群ｐ１〜ｐ３、ピン群ｐ４〜ｐ６が径方向に移動可能に挿設され、それらピン群の飛び出しを防止するため、凹溝１０ｃ・１０ｄには、それぞれ溝形に合わせた形状の穴埋板１６・１７をそれぞれ圧入して外側から押えている。なお、ピン群ｐ１〜ｐ６は、図１に示すように、ボトムピンａ、チェンジピンｂ、ドライバｃ、チェンジドライバｄ、ピンスプリングｅを、適宜に組み合わせた異なる６種類のピン群からなる。   On the other hand, the cylinder C has a plug through hole 11 formed in the axial center of the outer peripheral portion 10 having a substantially cylindrical shape, while the ring insertion groove 10a is sequentially formed on the outer peripheral surface toward the proximal end in front of the key insertion / removal direction. Each of the cap receiving collars 10b is formed in an annular shape. Further, on the outer peripheral surface (see also FIGS. 2 and 3), a shallow shallow bottom in the length direction from the cap receiving portion 10b to the front end of the key insertion / removal position at a predetermined initial insertion / removal position where the key is inserted / removed at the time of locking / unlocking. 3 rows of circumferentially spaced first dovetail-shaped first concave grooves 10c corresponding to the key ridges 3 provided at the three positions of both side plate surfaces and one side corners of the insertion portion 2 of the key. It is installed side by side. In the three rows of first concave grooves 10c, a plurality of pin holes 12 penetrating toward the axis are provided to form first pin hole rows α, β, and γ. Further, on the outer peripheral surface, each of the first concave grooves 10c is parallel to the first concave groove 10c at a variable key operation position separated from the first concave groove 10c by a predetermined rotation angle (for example, 35 degrees) in the circumferential direction. 2 ditches 10d are arranged side by side, and a plurality of pin holes 14 penetrating through the second ditches 10d toward the shaft core are provided in the same manner to form a second pinhole row α ′ · β ′. -Γ 'is formed. The pin groups p1 to p3 and the pin groups p4 to p6 are movable in the radial direction in the pin holes 12 and 14 of a total of six pin hole rows α, β and γ and α ′, β ′ and γ ′, respectively. In order to prevent the pin group from popping out, hole-filling plates 16 and 17 having a shape corresponding to the groove shape are respectively pressed into the concave grooves 10c and 10d and pressed from the outside. As shown in FIG. 1, the pin groups p <b> 1 to p <b> 6 include six different types of pin groups in which a bottom pin a, a change pin b, a driver c, a change driver d, and a pin spring e are appropriately combined.

プラグＰは、軸芯に沿って切り溝からなる鍵挿入溝２０を、溝幅を合鍵の板厚に合わせて削設し、鍵挿入溝２０の鍵挿入側基端に有した頭部２１の周縁に、鍔状の顎部２１ａを形成する一方、反対の先端側外周にねじ部２２を螺刻すると共に、頭部２１とねじ部２２間の胴部２３の先端側外周には、環状スリット２４を設けてなる。そして、頭部２１は、ピン嵌込み用の***２１ｂを凹設している。一方、胴部２３には、シリンダＣ側の第１および第２のピン穴列α・β・γ、α´・β´・γ´に対応させて、周方向に間隔をあけてピン穴列を３列並設して第３のピン穴列２５を形成しなる。第３のピン穴列２５は、それぞれ軸方向に複数列設したピン穴１９を、鍵挿入溝２０へ通ずる径方向に向けて放射状に空けて形成してなる。   The plug P has a key insertion groove 20 made of a cut groove along the axis of the key 21 that has a groove width that matches the plate thickness of the key. While forming a bowl-shaped jaw portion 21 a at the periphery, a screw portion 22 is threaded on the outer periphery on the opposite tip side, and an annular slit is formed on the outer periphery on the distal end side of the body portion 23 between the head portion 21 and the screw portion 22. 24 is provided. The head 21 has a small hole 21b for pin insertion. On the other hand, the body portion 23 has pin hole rows spaced in the circumferential direction so as to correspond to the first and second pin hole rows α, β, γ, α ′, β ′, γ ′ on the cylinder C side. Are arranged side by side to form the third pin hole array 25. The third pin hole row 25 is formed by radially forming a plurality of pin holes 19 provided in the axial direction in a radial direction leading to the key insertion groove 20.

図示シリンダ錠において、斯かるプラグＣには、特に、頭部２１に保護キャップ３０を取り付ける。図示例の保護キャップ３０は、例えば焼入れ強化したステンレス製で、シリンダＣの外周部１０の基端外周に被せて嵌込み可能な椀形をなし、表側の丸いガード部３０ａに、その中心を径方向に横断して細長い鍵通し穴３１を設ける一方、ガード部３０ａの内面に、頭部２１のピン嵌込み用***２１ｂと対応させて同様なピン嵌合穴３０ｂを凹設している。   In the illustrated cylinder lock, a protective cap 30 is particularly attached to the head 21 of the plug C. The protective cap 30 in the illustrated example is made of, for example, hardened and reinforced stainless steel, has a hook shape that can be fitted on the outer periphery of the outer peripheral portion 10 of the cylinder C, and has a center on the round guard portion 30a on the front side. A long and narrow key passage hole 31 is provided across the direction, and a similar pin fitting hole 30b is formed in the inner surface of the guard portion 30a so as to correspond to the pin fitting small hole 21b of the head portion 21.

そこで、プラグＰは、鍵挿入溝２０と鍵通し穴３１を位置合わせし、頭部２１のピン嵌込み用***２１ｂに、軸方向両端に突部を有した位置決めピン３２の一端突部を嵌め込む一方、他端突部を保護キャップ３０のピン嵌合穴３０ｂに嵌め込むことにより、保護キャップ３０を頭部２１に装着する。斯かるプラグＰは、鍵挿入溝２０と鍵通し穴３１の向きを、シリンダＣに対し所定の初期抜差し位置に合わせてプラグ貫通穴１１に嵌挿するが、最も奥まで嵌挿したとき、保護キャップ３０を、Ｃリング３３で抜け止めして外周部１０の基端外周に冠着する一方、先端側のねじ部２２をプラグ貫通穴１１から外部に突出させた状態で回動可能に嵌着する。そこで、プラグＰは、後述するとおり、シリンダＣに対し回動させて初期抜差し位置又は可変操作位置にあるときは、第３ピン穴列２５の各ピン穴１９が、シリンダＣ側の第１のピン穴列α・β・γ又は第２のピン穴列α´・β´・γ´の各ピン穴１２・１４と連通するようになっている。なお、プラグＰは、環状スリット２４に止め輪３４を嵌着して抜け止めし、ねじ部２２には、シリンダＣ側の規制凸部１０ｅに突き当てて、プラグＰの回動可能範囲を、合鍵の初期抜差し位置から解錠位置までの所定角度、例えば９０度の回動範囲に規制するプラグストップカム３５を嵌着した構成になっている。   Therefore, the plug P aligns the key insertion groove 20 and the key passage hole 31, and fits one end protrusion of the positioning pin 32 having protrusions at both ends in the axial direction into the pin insertion small hole 21b of the head 21. On the other hand, the protective cap 30 is attached to the head 21 by fitting the other end protrusion into the pin fitting hole 30 b of the protective cap 30. Such a plug P is inserted into the plug through hole 11 so that the direction of the key insertion groove 20 and the key passage hole 31 is aligned with the cylinder C at a predetermined initial insertion / removal position. The cap 30 is prevented from coming off by a C-ring 33 and is attached to the outer periphery of the proximal end of the outer peripheral portion 10, while the screw portion 22 on the distal end side is rotatably fitted in a state of protruding from the plug through hole 11. To do. Therefore, as described later, when the plug P is rotated with respect to the cylinder C and is in the initial insertion / removal position or the variable operation position, each pin hole 19 of the third pin hole row 25 is connected to the first side on the cylinder C side. The pin hole rows α, β, γ or the second pin hole rows α ′, β ′, γ ′ are communicated with the pin holes 12, 14 respectively. The plug P is fitted to the annular slit 24 to prevent the plug P from coming off, and the threaded portion 22 is abutted against the regulating convex portion 10e on the cylinder C side so that the rotatable range of the plug P is A plug stop cam 35 that restricts a predetermined angle from the initial insertion / extraction position of the key to the unlocking position, for example, a rotation range of 90 degrees, is fitted.

さて、本発明の可変式シリンダ錠では、特に、上述の如くプラグＰに取り付ける保護キャップ３０と、シリンダＣの外周部１０との間に、以下の如く可変操作位置での合鍵の抜き差し動作をコントロールする鍵抜差し制御手段Ｒを配設した構成になっている。   Now, in the variable cylinder lock of the present invention, the operation of inserting and removing the key at the variable operation position is controlled between the protective cap 30 attached to the plug P and the outer peripheral portion 10 of the cylinder C as described above. The key insertion / removal control means R is arranged.

鍵抜差し制御手段Ｒは、図１に示すように、回転体のチェンジディスク４０と、チェンジディスク４０の回転角度範囲を初期抜差し位置と可変操作位置間の所定回動角度（例えば３５度）の範囲に規制する回転角度規制部４５と、チェンジディスク４０の回転を制御する回転制御部５０とを備えてなる。   As shown in FIG. 1, the key insertion / removal control means R includes a change disk 40 of the rotating body and a rotation angle range of the change disk 40 within a predetermined rotation angle (for example, 35 degrees) between the initial insertion / removal position and the variable operation position. And a rotation control unit 50 for controlling the rotation of the change disk 40.

チェンジディスク４０は、中心に、プラグＰの頭部２１とほぼ対応する穴径の鍵挿通穴４１をあけた異形リング状に、例えば金属プレート板を用いて成形し、鍵挿通穴４１の穴縁には、初期抜差し位置で合鍵を鍵通し穴３１に通してプラグＰの鍵挿入溝２０に差し込むとき、合鍵の差込み部２の幅方向片側部分が係合する係合凹部４２を径方向外向きに削設すると共に、係合凹部４２の横から周方向片側に、上記した合鍵の初期抜差し位置から解錠位置間の離隔角度（９０度）にほぼ対応させた円周長さ範囲にわたり、円弧状に抜け止め部４３を形成してなる。更に、チェンジディスク４０は、外周縁の対角位置に、同様に初期抜差し位置と可変操作位置間の離隔角度（３５度）に対応させた円周長さ範囲にわたり、円弧状に一対の切欠き凹部４４・４４を凹設してなる。一方、シリンダＣ側には、その外周部１０の基端面１０ｆに、チェンジディスク４０における切欠き凹部４４・４４の相対位置に合わせて、一対のピン取付穴４６・４６を穿設し、ピン取付穴４６・４６にディスクストップピン４７・４７を圧入して切欠き凹部４４・４４と係合可能に立設する。そして、図示例の鍵抜差し制御手段Ｒでは、切欠き凹部４４・４４とディスクストップピン４７・４７とで、チェンジディスク４０の回転角度規制部４５を構成してなる。   The change disk 40 is formed in a deformed ring shape having a key insertion hole 41 having a hole diameter substantially corresponding to the head 21 of the plug P at the center by using, for example, a metal plate plate, and a hole edge of the key insertion hole 41 is formed. In the initial insertion / removal position, when the key is passed through the key hole 31 and inserted into the key insertion groove 20 of the plug P, the engagement recess 42 that engages one side in the width direction of the key insertion portion 2 is directed radially outward. In the circumferential length range substantially corresponding to the separation angle (90 degrees) between the initial insertion / extraction position of the above-mentioned key and the unlocking position, from the side of the engagement recess 42 to the one side in the circumferential direction. A retaining portion 43 is formed in an arc shape. Further, the change disk 40 has a pair of cutouts in a circular arc shape over a circumferential length range corresponding to the separation angle (35 degrees) between the initial insertion / removal position and the variable operation position in the diagonal position of the outer peripheral edge. Concave portions 44 are formed. On the other hand, on the cylinder C side, a pair of pin mounting holes 46 and 46 are formed in the base end face 10f of the outer peripheral portion 10 in accordance with the relative positions of the notch recesses 44 and 44 in the change disk 40, and pin mounting is performed. The disc stop pins 47 and 47 are press-fitted into the holes 46 and 46 so as to be able to engage with the notches 44 and 44. In the illustrated key insertion / removal control means R, the notch recesses 44 and 44 and the disk stop pins 47 and 47 constitute a rotation angle restricting portion 45 of the change disk 40.

更に、鍵抜差し制御手段Ｒにおいて、チェンジディスク４０には、係合凹部４２との対角位置にピン係合用のロック穴５１を開けている。一方、シリンダＣ側には、外周部１０の基端面１０ｆに、チェンジディスク４０側のロック穴５１に対応させて軸ガイド穴５２を穿設し、軸ガイド穴５２内に順次、ピンスプリングのコイルばね５３とロックピン５４とを挿入する。ロックピン５４は、挿入方向端部に、その端面から軸方向へばね収納穴５４ａを凹設し、ばね収納穴５４ａ内にばね一端を嵌め込んでコイルばね５３を保持した状態で軸ガイド穴５２へ挿設し、コイルばね５３で常時付勢してピン頭部５４ｂが軸ガイド穴５２の穴開口から突出するロック位置に出没自在に立設する。他方、保護キャップ３０側には、ガード部３０ａに、チェンジディスク４０側のロック穴５１およびシリンダＣ側のロックピン５４に対応させて、段付き貫通穴からなるボール保持穴５５を設け、ボール保持穴５５に球状の保護ボール５６を遊嵌する。そして、保護キャップ３０を外周部１０に被せてシリンダＣに装着したとき、その基端面１０ｆと保護キャップ３０との間で保護ボール５６を転動自在に保持してなる。なお、保護ボール５６は、悪戯や破壊等の不正行為防止のため、例えば保護キャップ３０と同様に焼入れ強化したステンレス製であることが望ましい。そして、図示例の鍵抜差し制御手段Ｒでは、ボール保持穴５５で保持した保護キャップ３０側の保護ボール５６と、チェンジディスク４０側のロック穴５１と、シリンダＣ側で軸ガイド穴５２からコイルばね５３を介して出没するロックピン５４とで、チェンジディスク４０の回転制御部５０を構成してなる。   Further, in the key insertion / removal control means R, the change disk 40 has a pin engagement lock hole 51 at a diagonal position with respect to the engagement recess 42. On the other hand, on the cylinder C side, a shaft guide hole 52 is formed in the base end surface 10f of the outer peripheral portion 10 so as to correspond to the lock hole 51 on the change disk 40 side. The spring 53 and the lock pin 54 are inserted. The lock pin 54 has a spring housing hole 54a recessed in the axial direction from the end surface of the lock pin 54 in the insertion direction, and the shaft guide hole 52 is held in a state in which one end of the spring is fitted in the spring housing hole 54a and the coil spring 53 is held. The pin head 54b is urged by a coil spring 53 and is erected at a lock position where the pin head 54b protrudes from the opening of the shaft guide hole 52. On the other hand, on the protective cap 30 side, a ball holding hole 55 consisting of a stepped through hole is provided in the guard portion 30a so as to correspond to the lock hole 51 on the change disk 40 side and the lock pin 54 on the cylinder C side. A spherical protective ball 56 is loosely fitted into the hole 55. When the protective cap 30 is put on the outer peripheral portion 10 and attached to the cylinder C, the protective ball 56 is held between the base end face 10f and the protective cap 30 so as to be able to roll. The protective ball 56 is preferably made of stainless steel that has been hardened and hardened in the same manner as the protective cap 30, for example, to prevent illegal acts such as mischief and destruction. In the key insertion / removal control means R in the illustrated example, the coil spring is formed from the protective ball 56 on the protective cap 30 side held by the ball holding hole 55, the lock hole 51 on the change disk 40 side, and the shaft guide hole 52 on the cylinder C side. The rotation control unit 50 of the change disk 40 is configured by a lock pin 54 that appears and disappears through 53.

そこで、鍵抜差し制御手段Ｒにおいて、チェンジディスク４０は、シリンダＣに対しプラグＰを初期抜差し位置に合わせてプラグ貫通穴１１に嵌挿し、そのプラグＰの頭部２１に保護キャップ３０を取り付けるとき、抜け止め部４３を可変操作位置寄りに向け、且つ係合凹部４２を鍵挿入溝２０に一致させて鍵挿通穴４１にプラグＰの頭部２１を嵌め込ませ、図２（ｂ）に示すように、鍵挿通穴４１の穴縁を顎部２１ａの上に載せて、頭部２１を中心として回転可能にプラグＰに嵌着する。すると、チェンジディスク４０は、初期抜差し位置において、図３（ｂ）に示すように、切欠き凹部４４・４４の片側側縁４４ａにストップピン４７・４７が係止する一方、ロック穴５１にロックピン５４が係合して回転ロック状態で組み付けられる。そして、保護キャップ３０をシリンダＣに被せてプラグＰの頭部２１に取り付けると、図２（ｂ）に示すように、保護ボール５６がロックピン５４の真上に配置される。従って、鍵抜差し制御手段Ｒでは、外部から回転制御部５０の保護ボール５６が押し込まれると、保護ボール５６によってロックピン５４がコイルばね５３に抗して軸ガイド穴５２内の底側へ押し込まれ、ピン頭部５４ａがロック穴５１から外れて、回転制御部５０によるチェンジディスク４０の回転ロック状態が解除される構成になっている。   Therefore, in the key insertion / removal control means R, when the change disk 40 is inserted into the plug through hole 11 in accordance with the initial insertion / removal position of the plug P with respect to the cylinder C, and the protective cap 30 is attached to the head 21 of the plug P, The head 21 of the plug P is fitted in the key insertion hole 41 with the retaining portion 43 facing the variable operation position and the engagement recess 42 aligned with the key insertion groove 20, as shown in FIG. Then, the hole edge of the key insertion hole 41 is placed on the jaw portion 21 a and is fitted to the plug P so as to be rotatable around the head portion 21. Then, as shown in FIG. 3B, the change disk 40 is locked in the lock hole 51 while the stop pins 47 and 47 are engaged with the one side edge 44a of the notch recesses 44 and 44 at the initial insertion / removal position. The pin 54 is engaged and assembled in a rotationally locked state. When the protective cap 30 is put on the cylinder C and attached to the head 21 of the plug P, the protective ball 56 is disposed immediately above the lock pin 54 as shown in FIG. Therefore, in the key insertion / removal control means R, when the protective ball 56 of the rotation control unit 50 is pushed from the outside, the lock pin 54 is pushed against the coil spring 53 by the protective ball 56 to the bottom side in the shaft guide hole 52. The pin head 54a is removed from the lock hole 51, and the rotation lock state of the change disk 40 by the rotation control unit 50 is released.

更に、鍵抜差し制御手段Ｒでは、図１に示すように、チェンジディスク４０に、ロック穴５１とは別にストッパ穴５８を開ける一方、シリンダＣの外周部１０の基端面１０ｆに、軸ガイド穴５２と平行にボール収納穴５９を穿設し、ボール収納穴５９内に、コイルばね６０を介してストッパボール６１を挿設し、コイルばね６０で常時付勢してストッパボール６１の一部をボール収納穴５９の穴開口から突出したロック位置に出没自在に内設している。ボール収納穴５９は、チェンジディスク４０を初期抜差し位置でプラグＰの頭部２１に嵌着した状態において、初期抜差し位置から可変操作位置間の離隔角度（３５度）に合わせた円周長さだけ係合凹部４２から周方向へ離隔した位置で、シリンダＣの基端面１０ｆに開けられている。従って、ストッパボール６１は、チェンジディスク４０を初期抜差し位置でプラグＰの頭部２１に嵌着した状態のときは、チェンジディスク４０の裏板面に押し付けられてボール収納穴５９内のロック解除位置に押し込まれる一方、チェンジディスク４０が回転して可変操作位置にあるときは、ボール収納穴５９の穴開口から突出してストッパ穴５８に係合し、チェンジディスク４０を可変操作位置に位置決め保持する構造になっている（図１２参照）。   Further, in the key insertion / removal control means R, as shown in FIG. 1, a stopper hole 58 is opened in the change disk 40 separately from the lock hole 51, while a shaft guide hole 52 is formed in the base end face 10 f of the outer peripheral portion 10 of the cylinder C. A ball storage hole 59 is formed in parallel to the ball storage hole, and a stopper ball 61 is inserted into the ball storage hole 59 via a coil spring 60. A part of the stopper ball 61 is urged constantly by the coil spring 60. It is provided in a lock position protruding from the hole opening of the storage hole 59 so as to be able to appear and retract. The ball storage hole 59 has a circumferential length corresponding to the separation angle (35 degrees) between the initial insertion / removal position and the variable operation position when the change disk 40 is fitted to the head 21 of the plug P at the initial insertion / removal position. The base end surface 10 f of the cylinder C is opened at a position spaced apart from the engaging recess 42 in the circumferential direction. Accordingly, the stopper ball 61 is pressed against the back plate surface of the change disk 40 when the change disk 40 is fitted to the head 21 of the plug P at the initial insertion / removal position, so that the unlocking position in the ball storage hole 59 is reached. When the change disc 40 is rotated and is in the variable operation position, the change disc 40 protrudes from the hole opening of the ball storage hole 59 and engages with the stopper hole 58 to position and hold the change disc 40 at the variable operation position. (See FIG. 12).

そこで、図示シリンダ錠では、上述した構成の鍵抜差し制御手段Ｒに対し、回転制御部５０を外部から操作する外部操作部材として、図１に示すようなアタッチメントＡを備えている。アタッチメントＡは、例えば金属製（樹脂製であってもよい）で、合鍵の板厚に合わせた幅狭な鍵保持穴６４を貫通させた略Ｌ形薄箱形につくり、片側に摘み部６５を形成する一方、他側に先細ピン状の押圧突起６６を鍵保持穴６４と平行に突設してなる。そして、アタッチメントＡの使用時は、押圧突起６６の突出方向に合鍵の差込み部２を合わせて鍵保持穴６４に挿通させ、摘み部６５を鍵保持穴６０内で挟持させて装着する。   Therefore, the illustrated cylinder lock is provided with an attachment A as shown in FIG. 1 as an external operation member for operating the rotation control unit 50 from the outside with respect to the key insertion / removal control means R having the above-described configuration. The attachment A is made of, for example, metal (may be made of resin) and is formed in a substantially L-shaped thin box shape through which a narrow key holding hole 64 corresponding to the thickness of the combined key is penetrated. On the other hand, a tapered pin-shaped pressing projection 66 is provided on the other side so as to protrude in parallel with the key holding hole 64. When the attachment A is used, the key insertion hole 2 is aligned with the protruding direction of the pressing protrusion 66 and inserted into the key holding hole 64, and the knob 65 is clamped in the key holding hole 60 and attached.

さて、以上のような構成の可変式シリンダ錠は、図示省略するが、たとえば自動販売機の開閉扉内に、保護キャップ３０のガード部３０ａを扉表面側から外部へ臨ませて、シリンダＣを固定的に取り付ける。その場合、図示シリンダ錠は、図３（ｃ）・（ｄ）に示すように、プラグＰが第３ピン穴列２５とシリンダＣ側の第１ピン穴列α・β・γとが一致する初期抜差し位置にあり、そのとき鍵の未挿入状態であるとすると、ピン群ｐ１・ｐ２のドライバーピンｃがシリンダＣに跨って介在し、シアラインは形成されないため、プラグＰの回転は抑止されて施錠状態にしている。このとき、鍵抜差し制御手段Ｒは、図２（ｂ）に示すように、回転制御部５０のロック穴５１にロックピン５４が係合し、チェンジディスク４０を初期抜差し位置にロックして回転を規制している。   The variable cylinder lock having the above-described configuration is not shown in the figure. For example, the guard C 30a of the protective cap 30 faces the outside from the door surface side inside the opening / closing door of the vending machine, and the cylinder C is placed. Install fixedly. In this case, in the illustrated cylinder lock, as shown in FIGS. 3C and 3D, the plug P has the third pin hole row 25 and the first pin hole row α, β, γ on the cylinder C side coincide with each other. If it is in the initial insertion / removal position and the key is not inserted at that time, the driver pins c of the pin groups p1 and p2 are interposed over the cylinder C, and no shear line is formed, so that the rotation of the plug P is suppressed. Locked. At this time, as shown in FIG. 2 (b), the key insertion / removal control means R is engaged with the lock pin 54 in the lock hole 51 of the rotation control unit 50 and locks the change disk 40 at the initial insertion / removal position to rotate. It is regulated.

次いで、図示シリンダ錠では、閉止状態で施錠した開閉扉を開錠するとき、図４（ａ）・（ｂ）に示すように、初期抜差し位置において、合鍵の基準鍵Ｋを保護キャップ３０の鍵通し穴３１から挿入し、差込み部２を、その幅方向片側部分をチェンジディスク４０の係合凹部４２に通してプラグＰの鍵挿入溝２０に差し込む。そのとき、シリンダ錠では、図５（ｃ）・（ｄ）に示すように、差込み部２のカギ山３の凹凸形状に応じて、ピン群ｐ１〜ｐ３のボトムピンａがプラグＰの放射状にあいた第３ピン穴列２５のピン穴１９…に沿って押し上げられ、ドライバーピンｃがシリンダＣとプラグＰの境界線上に接することによりシアラインが形成され、プラグＰは回動可能となる。そこで、基準鍵Ｋを、図中時計方向に大きく回してプラグＰをプラグストップカム３５で規制する回動角度範囲（９０度）まで回動し、それに応じてプラグＰの先端で、例えばデッドボルト（ロックボルト）を動かして開閉扉を開錠する。このとき、基準鍵Ｋは、初期抜差し位置のままロック状態にあるチェンジディスク４０に対し、その鍵挿通穴４１の穴縁を、差込み部２の逃げ凹部４に係合させながら回動する。しかる後、開閉扉を開けて、自動販売機内から、例えば料金を回収するなどの作業を行ってから、再び開閉扉を閉止し、差し込んだ基準鍵Ｋを反対の反時計方向へ９０度回動してプラグＰを基準位置に戻し、それに応じてプラグＰの先端でデッドボルトを逆向きに動かして開閉扉を施錠する。   Next, in the illustrated cylinder lock, when the open / close door locked in the closed state is unlocked, as shown in FIGS. 4 (a) and 4 (b), the reference key K for the key is used as the key of the protective cap 30 at the initial insertion / removal position. The insertion part 2 is inserted into the key insertion groove 20 of the plug P through the engagement recess 42 of the change disk 40 at one side in the width direction. At that time, in the cylinder lock, as shown in FIGS. 5C and 5D, the bottom pins a of the pin groups p <b> 1 to p <b> 3 are arranged in a radial pattern of the plug P according to the uneven shape of the key mountain 3 of the insertion portion 2. When the driver pins c are pushed up along the pin holes 19 of the third pin hole row 25 and come into contact with the boundary line between the cylinder C and the plug P, a shear line is formed, and the plug P can be rotated. Therefore, the reference key K is rotated largely clockwise in the figure to rotate the plug P to a rotation angle range (90 degrees) regulated by the plug stop cam 35, and at the tip of the plug P accordingly, for example, dead bolt (Lock bolt) is moved to unlock the door. At this time, the reference key K rotates with respect to the change disk 40 in the locked state in the initial insertion / removal position while engaging the edge of the key insertion hole 41 with the relief recess 4 of the insertion portion 2. After that, open the door and perform work such as collecting charges from the inside of the vending machine, then close the door again and rotate the inserted reference key K 90 degrees counterclockwise. Then, the plug P is returned to the reference position, and the dead bolt is moved in the opposite direction at the tip of the plug P accordingly, and the door is locked.

ところで、図示シリンダ錠において、たとえば合鍵を基準鍵から他の鍵に変更しようとして、初期差込み位置において、同様に基準鍵ＫをプラグＰの鍵挿入溝２０に差し込んだ状態から、図６（ａ）・（ｂ）に示すように、仮にプラグＰを図中時計方向へ３５度回動して可変操作位置へ移動させたとする。すると、この可変操作位置では、図７（ｃ）・（ｄ）に示すように、プラグＰの第３ピン穴列２５と、シリンダＣ側の第２ピン穴列α´・β´・γ´のピン穴とが一致した同心円となり、ボトムピンａが径方向へ移動可能な状態にあるために、基準鍵Ｋは、一応、引き抜き可能になるが、しかし、引き抜こうとすると、図６（ｂ）および同図中符号Ｅで示す箇所を拡大した図６（ｃ）に示すように、基準鍵Ｋの掛止め凸部５が、ロック状態のまま初期抜差し位置にあるチェンジディスク４０の抜け止め部４３に引っ掛かり、基準鍵Ｋの引き抜きを規制される。従って、本発明の可変式シリンダ錠では、基準鍵Ｋを可変操作位置へただ回動するだけでは、その可変操作位置で基準鍵Ｋを抜き差し操作できないので、合鍵を変更することはできない。   By the way, in the illustrated cylinder lock, for example, from the state in which the reference key K is inserted into the key insertion groove 20 of the plug P at the initial insertion position in an attempt to change the combined key from the reference key to another key, FIG. As shown in (b), it is assumed that the plug P is rotated 35 degrees clockwise in the drawing and moved to the variable operation position. Then, in this variable operation position, as shown in FIGS. 7C and 7D, the third pin hole row 25 of the plug P and the second pin hole row α ′, β ′, γ ′ on the cylinder C side. Since the bottom pin a is in a state in which it can move in the radial direction, the reference key K can be pulled out temporarily. However, if it is attempted to be pulled out, FIG. As shown in FIG. 6 (c) in which the portion indicated by the symbol E in FIG. 6 is enlarged, the latching convex portion 5 of the reference key K remains on the retaining portion 43 of the change disk 40 in the initial insertion / removal position in the locked state. The reference key K is restricted from being caught. Therefore, in the variable cylinder lock of the present invention, the key cannot be changed because the reference key K cannot be inserted / removed by simply rotating the reference key K to the variable operation position.

そこで、図示シリンダ錠では、合鍵の基準鍵Ｋを変える合鍵可変時は、開閉扉を閉止状態のまま、その外側から、外部操作部材として、例えば以下のようにアタッチメントＡを使用して外部操作することによって合鍵を変更する。   Therefore, in the illustrated cylinder lock, when the key is changed to change the reference key K of the key, the door is closed and the external operation is performed from the outside as an external operation member using, for example, the attachment A as follows. By changing the key.

そのときは、前述のように差込み部２を押圧突起６６の突出方向に合わせて基準鍵ＫをアタッチメントＡに装着し、それから、図８（ａ）・（ｂ）および図９（ａ）・（ｂ）に示すように、押圧突起６６を保護キャップ３０のボール保持穴５５から外部に臨む保護ボール５６に合わせて、基準鍵Ｋを鍵通し穴３１から挿入し、差込み部２を、その幅方向片側部分をチェンジディスク４０の係合凹部４２に通してプラグＰの鍵挿入溝２０に差し込む。すると、押圧突起６６でボール保持穴５５内の保護ボール５６が押し込まれ、次いで、その保護ボール５６によってロックピン５４がコイルばね５３に抗して軸ガイド穴５２内の底側へ押し込まれ、ピン頭部５４ａがロック穴５１から外れる。その結果、チェンジディスク４０は、回転制御部５０による回転ロック状態を解除され、基準鍵Ｋと共に回転可能になる。そのとき、前記図５（ｃ）・（ｄ）に示したと同様に、基準鍵Ｋの差込み部２に有したカギ山３の凹凸形状に応じて、ピン群ｐ１〜ｐ３のボトムピンａがプラグＰの第３ピン穴列２５のピン穴１９…に沿って押し上げられ、ドライバーピンｃがシリンダＣとプラグＰの境界線上に接することによるシアラインが形成され、プラグＰも回動可能になっている。   At that time, as described above, the reference key K is attached to the attachment A with the insertion portion 2 aligned with the protruding direction of the pressing projection 66, and then, FIGS. 8 (a), 8 (b), 9 (a), ( As shown in b), the reference key K is inserted from the keying hole 31 with the pressing protrusion 66 aligned with the protective ball 56 facing the outside from the ball holding hole 55 of the protective cap 30, and the insertion portion 2 is moved in the width direction. One side portion is inserted into the engagement recess 42 of the change disk 40 and inserted into the key insertion groove 20 of the plug P. Then, the protective ball 56 in the ball holding hole 55 is pushed by the pressing protrusion 66, and then the lock pin 54 is pushed against the coil spring 53 by the protective ball 56 to the bottom side in the shaft guide hole 52. The head 54 a is detached from the lock hole 51. As a result, the change disk 40 is released from the rotation lock state by the rotation control unit 50 and can be rotated together with the reference key K. At that time, as shown in FIGS. 5C and 5D, the bottom pins a of the pin groups p1 to p3 are connected to the plugs P according to the concave / convex shape of the key 3 provided in the insertion portion 2 of the reference key K. The third pin hole row 25 is pushed up along the pin holes 19 to form a shear line when the driver pin c contacts the boundary line between the cylinder C and the plug P, and the plug P is also rotatable.

そこで、基準鍵ＫをプラグＰの鍵挿入溝２０に差し込んだまま、アタッチメントＡの摘み部６５を摘んで、基準鍵Ｋを、図１０および図１１に示すように、初期抜差し位置からチェンジディスク４０と一体に図中時計方向へ回動する。すると、チェンジディスク４０は、板裏面でロックピン５４のピン頭部５４ａを押えながら、初期抜差し位置から３５度回転したところで、図１１（ｂ）に示すように、回転角度規制部４５の切欠き凹部４４・４４の他側縁４４ｂに、シリンダＣ側のディスクストップピン４７・４７が当って回転が停止され、基準鍵Ｋを可変操作位置に止めて位置決める。このとき、基準鍵Ｋは、差込み部２が係合凹部４２に係合したまま、チェンジディスク４０と一体に可変操作位置へ回動したため、図１０（ｂ）および同図中符号Ｅで示す箇所を拡大した図１０（ｃ）に示すように、可変操作位置では、プラグＰの鍵挿入溝２０から手前に引き抜き可能になっている。また、可変操作位置では、前記図７（ｃ）・（ｄ）に示したと同様に、プラグＰの第３ピン穴列２５と、シリンダＣ側の第２ピン穴列α´・β´・γ´のピン穴とが同心円となり、ボトムピンａが径方向へ移動可能な状態にあるために、プラグＰに対しても、基準鍵Ｋは引き抜き可能になっている。   Therefore, with the reference key K inserted into the key insertion groove 20 of the plug P, the knob 65 of the attachment A is picked, and the reference key K is moved from the initial insertion / removal position to the change disc 40 as shown in FIGS. And rotate clockwise in the figure. Then, the change disk 40 is rotated 35 degrees from the initial insertion / removal position while pressing the pin head 54a of the lock pin 54 on the back surface of the change disk 40. As shown in FIG. The disc stop pins 47 and 47 on the cylinder C side are brought into contact with the other side edges 44b of the recesses 44 and 44 to stop the rotation, and the reference key K is stopped and positioned at the variable operation position. At this time, the reference key K is rotated to the variable operation position integrally with the change disk 40 while the insertion portion 2 is engaged with the engagement recess 42, and therefore, the portion indicated by symbol E in FIG. As shown in FIG. 10C, which is enlarged, it can be pulled out from the key insertion groove 20 of the plug P to the front at the variable operation position. At the variable operation position, as shown in FIGS. 7C and 7D, the third pin hole row 25 of the plug P and the second pin hole row α ′, β ′, γ on the cylinder C side. Since the pin hole of ′ is a concentric circle and the bottom pin a is movable in the radial direction, the reference key K can be pulled out even for the plug P.

そこで、そのまま可変操作位置において、図１２（ａ）・（ｂ）・（ｃ）に示すように、アタッチメントＡと共に基準鍵ＫをプラグＰの鍵挿入溝２０から引き抜く。この鍵引抜き状態で可変操作位置にあるときは、チェンジディスク４０は、同図（ｃ）に示すように、ストッパ穴５８に、シリンダＣ側のボール収納穴５９からストッパボール６１が突出して係合し、可変操作位置で動かないように位置決め保持される。それから、基準鍵Ｋに代え、図１３（ａ）・（ｂ）に示すように、変更鍵Ｋ´を、プラグＰの鍵挿入溝２０内に差し込む。すると、この可変操作位置では、ピン群ｐ４〜６が、変更鍵Ｋ´のカギ山部の凹凸形状に応じて、チェンジピンｂの配置が変更鍵Ｋ´に合致し、基準鍵Ｋとは異なる所定のピン群の組合せに揃えられて、シアラインが形成され、変更鍵Ｋ´は回転可能になる。   Therefore, the reference key K is pulled out from the key insertion groove 20 of the plug P together with the attachment A as shown in FIGS. When the key is pulled out and is in the variable operation position, the change disc 40 is engaged with the stopper hole 58 with the stopper ball 61 protruding from the ball storage hole 59 on the cylinder C side, as shown in FIG. However, it is positioned and held so as not to move at the variable operation position. Then, instead of the reference key K, the change key K ′ is inserted into the key insertion groove 20 of the plug P as shown in FIGS. Then, at this variable operation position, the pin groups p4 to 6 are arranged differently from the reference key K in the arrangement of the change pin b according to the uneven shape of the key crest portion of the change key K ′. A shear line is formed by aligning with a predetermined combination of pins, and the change key K ′ can be rotated.

そこで、変更鍵Ｋ´をプラグＰに差込み状態のまま図中反時計方向へ回動させて、プラグＰを元の初期抜差し位置へ戻す。このとき、チェンジディスク４０は、図１３（ｂ）に示すように、係合凹部４２に係合した変更鍵Ｋ´の差込み部２に押されて、変更鍵Ｋ´と一体に図中反時計回りに回転する。すると、チェンジディスク４０は、板裏面でロックピン５４のピン頭部５４ａを押えながら、可変操作位置から３５度回転したところで、再び切欠き凹部４４・４４の片側縁４４ａに、シリンダＣ側のディスクストップピン４７・４７が当って回転が停止し、基準鍵Ｋを初期抜差し位置に止めて位置決める。すると今度は、初期抜差し位置においても、変更キーＫ´をプラグＰに差し込んだ状態では、変更鍵Ｋ´の差込み部２に有したカギ山部３の凹凸形状に応じて、基準鍵Ｋの場合とは異なる所定のピン群の組合せに揃えられて、シアラインが形成される。こうして開閉扉を閉止状態のまま、外側から、アタッチメントＡを使った外部操作によって合鍵を基準キーＫから変更キーＫ´へ変える合鍵変更操作を完了する。よって、変更鍵Ｋ´を逆向きに回動して初期抜差し位置へいったん戻すと、その初期抜差し位置にて、改めて元の基準キーＫを差し込んで開錠しようとしても、ピン群ｐ１〜ｐ３にシアラインが形成されず、プラグＰは回転不能になるため、合鍵として元の基準鍵Ｋを使用することができない。即ち、所定の変更鍵Ｋ´でしか施解錠操作できないようになる。   Therefore, the change key K ′ is inserted in the plug P and rotated counterclockwise in the figure to return the plug P to the original initial insertion / removal position. At this time, as shown in FIG. 13B, the change disk 40 is pushed by the insertion portion 2 of the change key K ′ engaged with the engagement recess 42 to be integrated with the change key K ′ counterclockwise. Rotate around. Then, the change disk 40 is rotated 35 degrees from the variable operation position while pressing the pin head 54a of the lock pin 54 on the back side of the plate. When the change disk 40 is turned to the one side edge 44a of the notches 44 and 44 again, Stop pins 47 and 47 hit to stop the rotation, and the reference key K is stopped and positioned at the initial insertion / removal position. Then, in the state where the change key K ′ is inserted into the plug P even at the initial insertion / removal position, the reference key K is used in accordance with the concave / convex shape of the key crest 3 in the insertion portion 2 of the change key K ′. A shear line is formed by aligning with a combination of predetermined pin groups different from. In this way, the key change operation for changing the key from the reference key K to the change key K ′ by the external operation using the attachment A is completed from the outside with the open / close door closed. Therefore, once the change key K ′ is rotated in the reverse direction and returned to the initial insertion / removal position, even if the original reference key K is inserted again at the initial insertion / removal position, the pin group p1 to p3 is unlocked. Since the shear line is not formed and the plug P cannot rotate, the original reference key K cannot be used as a joint key. That is, the locking / unlocking operation can be performed only with the predetermined change key K ′.

一方、上述のように変更鍵Ｋ´を回して可変操作位置から初期抜差し位置へ戻すと、変更鍵Ｋ´と一緒にチェンジディスク４０も回転して初期抜差し位置に復帰するため、回転制御部５０のロックピン５４は、コイルばね５３の付勢力で突出してロック穴５１に係合し、チェンジディスク４０を再び初期抜差し位置でロックして回転規制状態に戻す。従って、仮に、変更鍵Ｋ´を更に他の鍵に勝手に変更しようと、可変操作位置へ回しても、チェンジディスク４０が初期抜差し位置で固定状態のままなので、可変操作位置では、変更鍵Ｋ´の掛止め凸部５がチェンジディスク４０の抜け止め部４３に引っ掛かり、変更鍵Ｋ´を引き抜くことができない。このように本発明の可変式シリンダ錠では、変更鍵Ｋ´や基準鍵Ｋの合鍵を可変操作位置へただ回すだけでは、その可変操作位置で抜き差し操作できないので、勝手に合鍵を変更することはできないのである。   On the other hand, when the change key K ′ is turned to return from the variable operation position to the initial insertion / removal position as described above, the change disk 40 also rotates together with the change key K ′ to return to the initial insertion / removal position. The lock pin 54 protrudes by the urging force of the coil spring 53 and engages with the lock hole 51, and locks the change disk 40 again at the initial insertion / removal position to return to the rotation restricted state. Therefore, even if the change key K ′ is changed to another key without permission, even if the change disk 40 is turned to the variable operation position, the change disk 40 remains fixed at the initial insertion / removal position. The 'hanging convex portion 5' is caught on the retaining portion 43 of the change disk 40, and the change key K 'cannot be pulled out. As described above, in the variable cylinder lock of the present invention, simply by turning the key combination of the change key K ′ or the reference key K to the variable operation position, the insertion / extraction operation cannot be performed at the variable operation position. It is not possible.

本発明の一例である可変式シリンダ錠の分解斜視図である。It is a disassembled perspective view of the variable cylinder lock which is an example of this invention. （ａ）は鍵非挿入時のシリンダ錠の側面図、（ｂ）は図３中線Ｂ−Ｂ断面図、（ｃ）はシリンダ錠を先端側から見て示す端面図である。(A) is a side view of the cylinder lock when the key is not inserted, (b) is a sectional view taken along the line BB in FIG. 3, and (c) is an end view showing the cylinder lock as viewed from the front end side. （ａ）は鍵非挿入時のシリンダ錠を基端側から見て示す端面図、（ｂ）は図２中線Ａ−Ａ断面図、（ｃ）は図２中線Ｃ−Ｃ断面図、（ｄ）は図２中線Ｄ−Ｄ断面図である。(A) is an end view showing the cylinder lock when the key is not inserted from the base end side, (b) is a cross-sectional view taken along the line AA in FIG. 2, (c) is a cross-sectional view taken along the line CC in FIG. (D) is a sectional view taken along line DD in FIG. （ａ）は初期抜差し位置における基準鍵挿入時のシリンダ錠を示す側面図、（ｂ）は図５中線Ｂ−Ｂ断面図である。(A) is a side view which shows the cylinder lock at the time of the reference | standard key insertion in an initial stage insertion / extraction position, (b) is sectional drawing BB in FIG. （ａ）は初期抜差し位置における基準鍵挿入時のシリンダ錠を基端側から見て示す端面図、（ｂ）は図４中線Ａ−Ａ断面図、（ｃ）は図４中線Ｃ−Ｃ断面図、（ｄ）は図４中線Ｄ−Ｄ断面図である。(A) is an end view showing the cylinder lock when the reference key is inserted at the initial insertion / removal position as seen from the base end side, (b) is a cross-sectional view taken along line AA in FIG. 4, and (c) is a line C- in FIG. C sectional drawing, (d) is a DD sectional view taken on the line in FIG. （ａ）は基準鍵のみを可変操作位置に回動した時のシリンダ錠を示す側面図、（ｂ）は図７中線Ｂ−Ｂ断面図、（Ｃ）図６中符号Ｅで示す箇所の拡大断面図である。(A) is a side view showing the cylinder lock when only the reference key is rotated to the variable operation position, (b) is a sectional view taken along the line BB in FIG. It is an expanded sectional view. （ａ）は基準鍵のみを可変操作位置に回動した時のシリンダ錠を基端側から見て示す端面図、（ｂ）は図６中線Ａ−Ａ断面図、（ｃ）は図６中線Ｃ−Ｃ断面図、（ｄ）は図６中線Ｄ−Ｄ断面図である。(A) is an end view showing the cylinder lock as viewed from the base end side when only the reference key is rotated to the variable operation position, (b) is a cross-sectional view taken along line AA in FIG. 6, and (c) is FIG. Middle line CC sectional drawing, (d) is sectional line DD line sectional drawing of FIG. （ａ）は初期抜差し位置においてアタッチメント装着状態で基準鍵を差し込んだ時のシリンダ錠を示す側面図、（ｂ）は図９中線Ｂ−Ｂ断面図である。(A) is a side view showing a cylinder lock when a reference key is inserted in an attachment mounted state at an initial insertion / removal position, and (b) is a cross-sectional view taken along line BB in FIG. （ａ）は初期抜差し位置においてアタッチメント装着状態で基準鍵を差し込んだ時のシリンダ錠を基端側から見て示す端面図、（ｂ）は図８中線Ａ−Ａ断面図である。(A) is an end view showing the cylinder lock as viewed from the base end side when the reference key is inserted with the attachment mounted at the initial insertion / removal position, and (b) is a cross-sectional view taken along line AA in FIG. （ａ）はアタッチメント装着状態で基準鍵を可変操作位置へ回動した時のシリンダ錠を示す側面図、（ｂ）は図１１中線Ｂ−Ｂ断面図、（Ｃ）図１０中符号Ｅで示す箇所の拡大断面図である。(A) is a side view showing the cylinder lock when the reference key is rotated to the variable operation position in the attachment mounted state, (b) is a cross-sectional view taken along the line BB in FIG. 11, and (C) is denoted by E in FIG. It is an expanded sectional view of the location shown. （ａ）はアタッチメント装着状態で基準鍵を可変操作位置へ回動した時のシリンダ錠を基端側から見て示す端面図、（ｂ）は図１０中線Ａ−Ａ断面図である。(A) is an end view showing the cylinder lock as viewed from the base end side when the reference key is rotated to the variable operation position in the attachment mounted state, and (b) is a cross-sectional view taken along line AA in FIG. チェンジディスクを可変操作位置に回動して鍵未挿入時のシリンダ錠を、基端側から見て示す端面図、（ｂ）は線Ａ−Ａ断面図、（ｃ）は線Ｂ−Ｂ断面図である。An end view showing the cylinder lock when the key is not inserted by rotating the change disk to the variable operation position, as viewed from the base end side, (b) is a sectional view taken along line AA, and (c) is a sectional view taken along line BB. FIG. （ａ）は可変操作位置において変更鍵挿入時のシリンダ錠を示す縦断面図、（ｂ）は横断面図である。(A) is a longitudinal cross-sectional view which shows the cylinder lock at the time of a change key insertion in a variable operation position, (b) is a cross-sectional view.

符号の説明Explanation of symbols

Ａ アタッチメント（外部操作部材）
Ｃ シリンダ
Ｋ 基準鍵
Ｋ´ 変更鍵
Ｐ プラグ
ｐ１〜ｐ６ ピン群
α・β・γ 第１のピン穴列
α´・β´・γ´ 第２のピン穴列
１ 合鍵の摘み部
２ 差込み部
３ カギ山
５ 掛止め凸部
１０ シリンダの外周部
１１ シリンダのプラグ貫通穴
１２・１４・１９ ピン穴
２０ プラグの鍵挿入溝
２１ プラグの頭部
３０ 保護キャップ
３１ 保護キャップの鍵通し穴
４０ チェンジディスク（回転体）
４１ 鍵挿通穴
４２ 係合凹部
４３ 抜け止め部
４４ 切欠き凹部
４５ 回転角度規制部
４７ ディスクストップピン
５０ 回転制御部
５１ ロック穴
５４ ロックピン
６６ アタッチメントの押圧突起
A Attachment (External operation member)
C Cylinder K Reference key K ′ Change key P Plugs p1 to p6 Pin group α, β, γ First pin hole row α ′, β ′, γ ′ Second pin hole row 1 Joint key knob portion 2 Insert portion 3 Key 5 Snap projection 10 Cylinder outer periphery 11 Cylinder plug through hole 12, 14, 19 Pin hole 20 Plug key insertion groove 21 Plug head 30 Protective cap 31 Protective cap keyhole 40 Change disc ( Rotating body)
41 Key insertion hole 42 Engaging recess 43 Retaining portion 44 Notch recess 45 Rotation angle restricting portion 47 Disc stop pin 50 Rotation control portion 51 Lock hole 54 Lock pin 66 Attachment protrusion

Claims (3)

軸芯に沿って鍵挿入溝を有したプラグを筒状シリンダに嵌合し、該シリンダに対し前記プラグをピン群によるシアライン形成に応じて回動可又は否とするシリンダ錠であって、前記シリンダには、その軸芯に向け貫通する複数のピン穴を長さ方向に列設した第１のピン穴列を合鍵の初期抜差し位置に設けると共に、初期抜差し位置から周方向へ所定の回動角度離隔した合鍵の可変操作位置に同様に複数のピン穴を長さ方向に列設した第２のピン穴列を並設する一方、前記プラグには、それが初期抜差し位置又は可変操作位置にあるとき、前記シリンダ側の第１又は第２のピン穴列の各ピン穴と連通する複数のピン穴を列設した第３のピン穴列を前記鍵挿入溝に向けて設け、いま合鍵として使用する基準鍵を初期抜差し位置で前記鍵挿入溝に差し込んで前記プラグを可変操作位置へ回動してから、その可変操作位置で抜き差して前記基準鍵から変更鍵に差し換え、該変更鍵と対応するピン群の組合せに変更することにより合鍵を可変とする可変式シリンダ錠において、
前記合鍵は、摘み部から前記第１および第２のピン穴列のピン群と対応する形状にカギ山が刻設された細長板状の差込み部を延設し、その差込み部の幅方向に掛止め凸部を突設する一方、
前記プラグの頭部に、前記シリンダに被せる保護キャップを、その鍵通し穴を前記プラグの鍵挿入溝に合わせて取り付け、これら保護キャップと前記シリンダ間に鍵抜差し制御手段を配設し、
該鍵抜差し制御手段は、
回転体と、初期抜差し位置で前記プラグの鍵挿入溝に前記合鍵を差し込んだとき、突起と穴の嵌め合いで前記回転体の回転を規制する一方、外部操作部材の操作で前記突起と前記穴の嵌め合いが外されると、前記回転体の回転規制を解除して前記回転体を前記合鍵と一体に可変操作位置へ回転可能とする回転制御部とを備え、
前記回転体は、
初期抜差し位置にある前記プラグの鍵挿入溝に前記合鍵を差し込むと、該合鍵の差込み部が係合する係合凹部を穴縁に設けた鍵挿通穴と、前記回転制御部によって初期抜差し位置で回転規制状態にあるとき、その初期抜差し位置で前記合鍵のみを可変操作位置へ回動させると、その可変操作位置では、前記掛止め凸部が引っ掛かって前記合鍵の引き抜きを規制する抜け止め部と、を備えてなることを特徴とする、可変式シリンダ錠。 A cylinder lock for fitting a plug having a key insertion groove along an axial center to a cylindrical cylinder, and allowing the plug to rotate or not according to shear line formation by a pin group with respect to the cylinder, The cylinder is provided with a first pin hole row in which a plurality of pin holes penetrating toward its axis are arranged in the length direction at the initial insertion / removal position of the key, and a predetermined rotation in the circumferential direction from the initial insertion / removal position. Similarly, a second pin hole row in which a plurality of pin holes are arranged in the length direction is arranged side by side in the variable operation position of the key separated at an angle, while the plug has the initial insertion / removal position or the variable operation position. In some cases, a third pin hole row in which a plurality of pin holes communicating with each pin hole of the first or second pin hole row on the cylinder side is arranged toward the key insertion groove, and is now used as a key. Insert the reference key to be used into the key insertion slot at the initial insertion / removal position. And turning the plug to the variable operation position, and then inserting / removing the plug at the variable operation position, replacing the reference key with the change key, and changing the combination key to a combination of pins corresponding to the change key. In the variable cylinder lock
The key key extends from the knob portion an elongated plate-like insertion portion in which a key is engraved in a shape corresponding to the pin group of the first and second pin hole rows, and extends in the width direction of the insertion portion. While protruding the protruding protrusion,
A protective cap that covers the cylinder is attached to the head of the plug, with its key-through hole aligned with the key insertion groove of the plug, and a key insertion / removal control means is disposed between the protective cap and the cylinder,
The key insertion / extraction control means includes:
When the joint key is inserted into the key insertion groove of the plug at the initial insertion / removal position, the rotation of the rotation body is regulated by the fitting of the protrusion and the hole, while the protrusion and the hole are operated by operating an external operation member. A rotation control unit that releases the rotation restriction of the rotating body and enables the rotating body to rotate to the variable operation position integrally with the key.
The rotating body is
When the key is inserted into the key insertion groove of the plug at the initial insertion / removal position, the key insertion hole provided at the hole edge with which the insertion portion of the combination key is engaged, and the rotation control unit at the initial insertion / removal position. When in the rotation restricted state, when only the key is rotated to the variable operation position at the initial insertion / removal position, at the variable operation position, the latch protrusion protrudes to restrict the withdrawal of the key. And a variable cylinder lock. 前記鍵抜差し制御手段は、前記回転体の回転角度範囲を初期抜差し位置と可変操作位置間の前記所定回動角度に規制する回転角度規制部を備えてなることを特徴とする、請求項１に記載の可変式シリンダ錠。   The said key insertion / extraction control means is provided with the rotation angle control part which controls the rotation angle range of the said rotary body to the said predetermined rotation angle between an initial insertion / extraction position and a variable operation position, It is characterized by the above-mentioned. The variable cylinder lock as described. 前記外部操作部材は、前記合鍵の前記差込み部を貫通させて前記摘み部を挟んで保持する鍵保持穴を備えると共に、前記突起と前記穴の嵌め合いを外して前記回転体の回転規制を解除する押圧突起を、前記鍵保持穴と平行に突設したアタッチメントで構成してなることを特徴とする、請求項１又は２に記載の可変式シリンダ錠。
The external operation member includes a key holding hole that passes through the insertion portion of the key and holds the knob portion, and removes the fitting of the protrusion and the hole to release the rotation restriction of the rotating body. 3. The variable cylinder lock according to claim 1, wherein the pressing protrusion to be formed is an attachment projecting in parallel with the key holding hole.

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