JP5124052B1

JP5124052B1 - Lock protection cap

Info

Publication number: JP5124052B1
Application number: JP2012098400A
Authority: JP
Inventors: 基次佐々木; 隆行平田
Original assignee: Best Corp
Current assignee: Best Corp
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2013-01-23
Anticipated expiration: 2032-04-24
Also published as: JP2013227725A

Abstract

【課題】開けるときにキャップカバーが手前側に飛び出さず安全で、しかも、構造的にも意匠的にも従来にない斬新でシンプルな錠前の保護キャップを提供する。
【解決手段】保護キャップＣは、キャップカバー２０を、キャップベース１５に被せて鍵操作穴１６を塞いだ閉位置と、鍵操作穴１６を開放する開位置との間をスライド自在にキャップベースに係合させて連結する一方、開位置に向けて常時付勢ばね４５・４５で付勢し、開時は、ストッパピン４０・４０に押し当てて開位置に位置決め保持する。閉時は、キャップカバーを付勢ばね４５・４５に抗して閉位置までスライドさせて完全にキャップベースに被せると、磁石Ｍでロックピン３５を吸着して軸部３５ａを掛け止め穴６０に係合し、キャップカバーをキャップベースに掛け止めて自動的にロックする構造になっている。
【選択図】図１
Provided is a novel and simple lock protection cap that is safe since the cap cover does not protrude to the front side when opened, and is unprecedented in terms of structure and design.
A protective cap C is slidable between a closed position where a cap cover 20 is put on a cap base 15 to close the key operation hole 16 and an open position where the key operation hole 16 is opened. While being engaged and connected, they are always urged by the urging springs 45 and 45 toward the open position, and when opened, they are pressed against the stopper pins 40 and 40 to be positioned and held at the open position. When closed, if the cap cover is slid to the closed position against the urging springs 45 and 45 and completely covered with the cap base, the lock pin 35 is attracted by the magnet M and the shaft portion 35a is engaged with the retaining hole 60. The cap cover is hooked on the cap base and automatically locked.
[Selection] Figure 1

Description

本発明は、扉や壁面など板状体に組み付ける錠前の鍵穴から雨水や塵埃が侵入したり、不正な道具を挿入して悪戯されたりしないように鍵穴を隠蔽して保護する錠前の保護キャップに関する。 The present invention relates to a lock protection cap that covers and protects a keyhole so that rainwater or dust does not enter from a lock keyhole to be assembled to a plate-like body such as a door or a wall, or an unauthorized tool is inserted to be mischievous. .

例えば交通信号機の制御盤を収納する電気制御ボックスの扉に使用される錠前は、鍵穴を扉の外側板面から外部に臨ませて扉に組み付けるが、その鍵穴から雨水や塵埃が侵入したり不正な道具を挿入して悪戯されたりしないように、錠前の正面に保護キャップを装着して鍵穴を隠蔽している。 For example, a lock used for the door of an electric control box that houses a traffic signal control panel is assembled to the door with the keyhole facing the outside from the outside plate surface of the door. A protective cap is attached to the front of the lock to conceal the keyhole so that you can not be mischievous by inserting a simple tool.

従来、この種の保護キャップの中には、扉の外側板面から突出した錠前の正面側上部に鍵操作穴を鍵穴に連通させて固定する固定プレート（キャップベース）と、固定プレートにヒンジ機構を介して回転可能に連結して鍵操作穴を開閉する可動プレート（キャップカバー）とで構成し、可動プレートは、開く方向に常時ばね付勢する一方、閉時は固定プレートに重ね合わせた閉位置に掛け止めて保持し、開時、外部操作部材を用いて固定プレートとの掛け止めを解除すると、ばね付勢力により開方向に跳ね上がるように自動的に回転して鍵穴を開放する回転跳ね上げ式のものが多い（特許文献１参照）。 Conventionally, in this type of protective cap, there is a fixing plate (cap base) that fixes the key operation hole in communication with the key hole in the upper part of the front side of the lock protruding from the outer plate surface of the door, and a hinge mechanism on the fixing plate. It is composed of a movable plate (cap cover) that is rotatably connected via a key to open and close the key operation hole. The movable plate is always spring-biased in the opening direction, and when closed, it is closed on the fixed plate. Rotating and holding up by holding it in position, and when unlocked, when it is unlocked from the fixed plate using an external operation member, it automatically rotates so that it springs up in the opening direction by the spring biasing force and opens the keyhole There are many formulas (see Patent Document 1).

特開２００５−２００９３９号公報Japanese Patent Laying-Open No. 2005-200939

ところが、従来、回転跳ね上げ式の保護キャップでは、可動プレートを回転可能に固定プレートに連結するためにヒンジ機構を備えることが必要になることから、それだけ構造的に複雑になり、意匠的にもスッキリしないという課題があった。しかも、回転跳ね上げ式保護キャップでは、可動プレートを開けるとき、固定プレートとの掛け止めを解除すると、いきなり、手前側の操作者に向かって回転しながら可動プレートが飛び出すために、可動プレートが手等にぶつかって危ないという課題があった。 However, conventionally, in the rotation-up type protective cap, since it is necessary to provide a hinge mechanism in order to connect the movable plate to the fixed plate in a rotatable manner, it is structurally complicated, and also in terms of design. There was a problem of not refreshing. Moreover, in the rotating flip-up type protective cap, when the movable plate is opened, when the latch with the fixed plate is released, the movable plate suddenly pops out while rotating toward the operator on the near side. There was a problem that it was dangerous to hit it.

そこで、本発明が解決せんとする課題は、開けるときにキャップカバーが手前側に飛び出さず安全で、構造的にも意匠的にも従来にない斬新でシンプルな錠前の保護キャップを提供することにある。 Therefore, the problem to be solved by the present invention is to provide a novel and simple lock protection cap that is safe, structurally and designally unprecedented before the cap cover pops out to the near side when opening. It is in.

この課題を解決すべく、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、板状体の外側板面ｄから外部に臨ませた錠前に、その鍵穴１３に、表面側に開口した鍵操作穴１６を連通させて固定するキャップベース１５と、該キャップベース１５に連結して前記鍵操作穴１６を開閉するキャップカバー２０とからなる錠前の保護キャップＣにおいて、前記キャップベース１５には、前記キャップカバー２０との間から浸入する水を受ける樋部２１を高さ方向上部に幅方向に沿って設け、前記キャップカバー２０は、その樋部２１の上に上カバー部４９を載せた状態で、前記キャップベース１５を嵌め込むことにより表面側に被せて前記鍵操作穴１６を塞いだ閉位置と、該鍵操作穴１６を開放して前記鍵穴１３を外部に臨ませる開位置の間をスライド自在に前記キャップベース１５に連結し、前記キャップベース１５および前記キャップカバー２０は、該キャップカバー２０がスライドするとき、前記鍵操作穴１６の周りで互いに接触する摺接面１８ａ・４１ａを備え、それら摺接面１８ａ・４１ａを、前記キャップカバー２０が閉位置にスライドすると、互いに圧接する傾きのテーパ面で形成すると共に、前記樋部２１は、前記キャップベース１５の表面側と裏面側にそれぞれ防水壁２１ａ・２１ｂを立設して溝形に形成し、浸入した水を受けると、幅方向両端から裏面側を経て外部へ流れ落す排水路ｗを形成してなることを特徴とする。 In order to solve this problem, the invention described in claim 1 is, for example, as shown in the embodiment shown below , the surface of the keyhole 13 is formed on the surface of the lock 13 facing the outside from the outer plate surface d of the plate-like body. the cap base 15 for fixing communicates the key operation hole 16 that opens to the side, in the protective cap C of the lock consisting of the cap cover 20 for opening and closing the key operation hole 16 and coupled to the cap base 15, the cap The base 15 is provided with a flange 21 that receives water entering from between the cap cover 20 and the upper portion along the width direction at an upper portion in the height direction , and the cap cover 20 has an upper cover portion on the flange 21. 49 in a state carrying the, face and a closed position which closes the key operation hole 16 by covering the surface side by fitting the cap base 15, the keyhole 13 to open the said key operation hole 16 to the outside The cap base 15 and the cap cover 20 are slidably connected between the open positions, and the cap base 15 and the cap cover 20 are in sliding contact with each other around the key operation hole 16 when the cap cover 20 slides. The sliding contact surfaces 18a and 41a are formed with tapered surfaces inclined so as to come into pressure contact with each other when the cap cover 20 is slid to the closed position, and the flange portion 21 is formed on the cap base 15. Waterproof walls 21a and 21b are erected on the front side and the back side, respectively, and formed into a groove shape, and when drained water is received, drainage channels w are formed that flow down from both ends in the width direction to the outside through the back side. It is characterized by that.

請求項２に記載の発明は、請求項１に記載の錠前の保護キャップＣにおいて、たとえば以下に示す図示実施の形態のとおり、前記キャップカバー２０は、開位置に向けて常時ばね付勢する一方、閉時は前記キャップベース１５に掛け止めて閉位置に位置決め保持し、開時は該キャップベース１５に設けた差込穴２７に外部操作部材の先端を差し込んで前記キャップベース１５に対する掛け止めを解除すると、ばね付勢力により自動的に開位置にスライドしてなることを特徴とする。 According to a second aspect of the present invention, in the protective cap C of the lock according to the first aspect, for example, as shown in the embodiment shown below, the cap cover 20 is always spring-biased toward the open position. When closed, the cap base 15 is latched and positioned and held in the closed position. When the cap base 15 is opened, the tip of an external operation member is inserted into the insertion hole 27 provided in the cap base 15 to latch the cap base 15. When released, it is automatically slid to the open position by a spring biasing force.

請求項３に記載の発明は、請求項２に記載の錠前の保護キャップＣにおいて、たとえば以下に示す実施の形態のとおり、前記差込穴２７は、前記キャップベース１５を前記板状体の外側板面１４上に設置した状態において、前記外部操作部材の差込方向入口側に向かうに従い次第に前記外側板面ｄから離れる方向に傾斜して外周部に穿設してなることを特徴とする。 According to a third aspect of the present invention, in the protective cap C of the lock according to the second aspect, as in the embodiment shown below, for example, the insertion hole 27 connects the cap base 15 to the outside of the plate-like body. In the state of being installed on the plate surface 14, the outer operation member is gradually inclined toward the direction away from the outer plate surface d toward the insertion direction entrance side of the external operation member, and is formed in the outer peripheral portion.

従って、請求項１に記載の発明では、キャップカバーを、キャップベースに被せて鍵操作穴を塞いだ閉位置と、鍵操作穴を開放して錠前の鍵穴を外部に臨ませる開位置の間をスライド自在にキャップベースに連結したスライド式であるため、回転式に必要なヒンジ機構が不要となり、それだけ構造的にも意匠的にも従来にない斬新でシンプルな錠前の保護キャップを得ることができる。しかも、請求項１に記載の発明では、キャップカバーを、閉位置と開位置との間を扉など板状体の外側板面に沿って直線的にスライドさせて開閉する構造であるため、従来の回転跳ね上げ式のようにキャップカバーが回転しながら手前側の操作者に向かって飛び出して手等にぶつかるような危険はなく安全で、簡単な操作でキャップカバーを開閉することができる。更に、請求項１に記載の発明によれば、保護キャップは、キャップカバーを閉位置までスライドさせて完全にキャップベースに被せると、互いに接触するキャップカバーの摺接面とキャップベースの摺接面とが互いに圧接する傾きのテーパ面で形成されているため、鍵操作穴の周りで互いの摺接面が固く重なり合った食い込み状態で密着し、これにより、キャップベースとキャップカバーを、たとえ間にガタがあってもこれを吸収して連結し、その結果、鍵操作穴を液密に塞いで防水効果を上げることができる。また、たとえキャップベースとキャップカバーの間に水が染み込んで浸入することがあっても、キャップベースには、鍵操作穴の周りに溝状樋部を設けるため、浸入した水は、樋部で受けて鍵操作穴の高さ方向上部から排水路を通して外部へと流し落として排水したり、樋部に留まっても自然乾燥させたりすることにより防水効果を上げることができる。 Therefore, in the invention described in claim 1, the cap cover is placed between the closed position where the cap base is covered and the key operation hole is closed, and the open position where the key operation hole is opened and the lock key hole is exposed to the outside. Because it is slidably connected to the cap base, it can be slid freely, eliminating the need for a hinge mechanism that is necessary for the rotary type, and thus obtaining a novel and simple lock protection cap that is unprecedented in terms of structure and design. . Moreover, in the invention described in claim 1, since the cap cover is configured to open and close by sliding linearly along the outer plate surface of a plate-like body such as a door between a closed position and an open position. The cap cover can be opened and closed with a simple operation without any danger of jumping toward the operator on the front side and colliding with the hand etc. Further, according to the first aspect of the present invention, when the cap is slid to the closed position and completely covered on the cap base, the protective cap is in contact with the sliding surface of the cap cover and the sliding surface of the cap base. Are formed with tapered surfaces that are in pressure contact with each other, so that the sliding contact surfaces tightly overlap each other around the key operation hole, so that the cap base and the cap cover Even if there is a backlash, it is absorbed and connected, and as a result, the key operation hole can be liquid-tightly closed to increase the waterproof effect. In addition, even if water penetrates between the cap base and the cap cover, the cap base has a grooved collar around the key operation hole. The waterproof effect can be improved by receiving and draining from the upper part in the height direction of the key operation hole through the drainage channel to the outside and allowing it to dry naturally even if it stays in the collar.

請求項２に記載の発明では、通常の非施解錠時には、キャップカバーをキャップベースに被せて鍵操作穴を塞ぐことにより、鍵穴から雨水や塵埃が侵入したり不正な道具を挿入して悪戯されたりしないように鍵穴を隠して保護している。この閉時は、キャップカバーをキャップベースに掛け止めて閉位置に位置決め保持し、錠前を解錠する開時は、差込穴に外部操作部材の先端を差し込んでキャップベースに対する掛け止めを解除すると、ばね付勢力により自動的に開位置までスライドし、そうすれば、簡単にキャップカバーが開いて鍵穴を外部に臨ませることができる。 According to the second aspect of the present invention, at the time of normal non-locking / unlocking, the cap cover is covered with the cap base to close the key operation hole, so that rainwater or dust enters from the key hole or an unauthorized tool is inserted to be mischievous. The keyhole is concealed and protected so that it does not fall. When closed, hold the cap cover on the cap base and position and hold it in the closed position.When unlocking the lock, insert the tip of the external operation member into the insertion hole to release the lock on the cap base. By sliding to the open position automatically by the spring biasing force, the cap cover can be easily opened and the keyhole can be exposed to the outside.

請求項３に記載の発明では、キャップベースが扉等の板状体の外側板面上に設置された状態で錠前に固着し、差込穴の入口が板状体の外側板面に近接するため、外部操作部材を手で持って先端を差込穴に差し込み、キャップカバーの掛け止めを解除する操作をするとき、板状体の外側板面が手に当たって解除操作の障害になりそうな状況にある。しかし、本発明の保護キャップは、差込穴を、キャップベースを板状体の外側板面上に設置した状態において、操作部材の差込方向入口側に向かうに従い次第に外側板面から離れる方向に傾斜してキャップベースに穿設する構成であるため、外部操作部材の先端を差込穴に差し込んだとき、外部操作部材の持ち手側が板状体の外側板面から遠ざかるので、従来のように板面が手にぶつかって解除操作の障害になるようなことがなく、それだけ解錠操作を手間なく簡単にすることができる。 In the invention according to claim 3 , the cap base is fixed to the lock in a state where it is installed on the outer plate surface of the plate-like body such as a door, and the entrance of the insertion hole is close to the outer plate surface of the plate-like member. Therefore, when holding the external operation member with your hand and inserting the tip into the insertion hole to release the cap cover, the outer plate surface of the plate-shaped body may hit the hand and cause an obstacle to the release operation. It is in. However, in the protective cap of the present invention, in the state where the insertion hole is installed on the outer plate surface of the plate-like body, the protective cap is gradually separated from the outer plate surface toward the insertion direction entrance side of the operation member. Since it is configured to be inclined and drilled in the cap base, when the tip of the external operation member is inserted into the insertion hole, the handle side of the external operation member moves away from the outer plate surface of the plate-like body. The plate surface does not hit the hand and obstruct the release operation, and the unlocking operation can be simplified without much trouble.

本発明の一例である保護キャップを扉のラッチ錠装置に組み付けて使用し、キャップカバーを被せた掛け止め状態で示す縦断面図である。It is a longitudinal cross-sectional view shown in the latching state which used the protective cap which is an example of this invention assembled | attached to the latch lock apparatus of a door, and covered the cap cover. （Ａ）は扉のラッチ錠装置に組み付けた保護キャップを、キャップカバーを被せた掛け止め状態で示す正面図、（Ｂ）は側面図である。(A) is a front view which shows the protective cap assembled | attached to the latch lock apparatus of the door in the latching state which covered the cap cover, (B) is a side view. 扉のラッチ錠装置に組み付けた保護キャップを、キャップカバーを被せた掛け止め状態で示す斜視図である。It is a perspective view which shows the protective cap assembled | attached to the latch lock apparatus of the door in the latching state which covered the cap cover. 保護キャップの分解斜視図である。It is a disassembled perspective view of a protective cap. 保護キャップを図４と向きを違えて示す分解斜視図である。It is a disassembled perspective view which shows a protective cap in a different direction from FIG. （Ａ）は保護キャップのキャップベースを示す斜視図、（Ｂ）はそのキャップベースを向きを違えて示す斜視図である。(A) is a perspective view which shows the cap base of a protective cap, (B) is a perspective view which shows the cap base in different directions. （Ａ）は図１に示す保護キャップの下部の拡大縦断面図、（Ｂ）は図１１に示す保護キャップの下部の拡大縦断面図、（Ｃ）は図１２に示す保護キャップの下部の拡大縦断面図である。(A) is an enlarged vertical sectional view of the lower part of the protective cap shown in FIG. 1, (B) is an enlarged vertical sectional view of the lower part of the protective cap shown in FIG. 11, and (C) is an enlarged lower part of the protective cap shown in FIG. It is a longitudinal cross-sectional view. （Ａ）は保護キャップをキャップカバーの開いた掛け止め解除状態で示す正面図、（Ｂ）はキャップカバーを被せた掛け止め状態で示す正面図である。(A) is a front view showing a protective cap in a latch release state with the cap cover open, and (B) is a front view showing a latch state with the cap cover covered. （Ａ）は保護キャップをキャップカバーの開いた掛け止め解除状態で示す側面図、（Ｂ）はキャップカバーを被せた掛け止め状態で示す側面図である。(A) is a side view showing the protective cap in the latch release state with the cap cover open, and (B) is a side view showing in the latch state with the cap cover covered. （Ａ）は保護キャップをキャップカバーの開いた掛け止め解除状態で示す斜視面図、（Ｂ）はキャップカバーを被せた掛け止め状態で示す斜視図である。(A) is a perspective view which shows a protective cap in the latch release state in which the cap cover is opened, and (B) is a perspective view in a latch state where the cap cover is put on. 扉のラッチ錠装置に組み付けた保護キャップをキャップカバーの掛け止め解除途中の状態で示す縦断面図である。It is a longitudinal cross-sectional view which shows the protective cap assembled | attached to the latch lock apparatus of the door in the state in the middle of latch release of a cap cover. 扉のラッチ錠装置に組み付けた保護キャップをキャップカバーの開いた掛け止め解除状態で示す縦断面図である。It is a longitudinal cross-sectional view which shows the protection cap assembled | attached to the latch lock apparatus of the door in the latching release state which the cap cover opened. 扉のラッチ錠装置に組み付けた保護キャップをキャップカバーの開いた掛け止め解除状態で示す斜視図である。It is a perspective view which shows the protection cap assembled | attached to the latch lock apparatus of the door in the latch release state which the cap cover opened. （Ａ）は扉のラッチ錠装置に組み付けた保護キャップをキャップカバーの開いた掛け止め解除状態で示す正面図、（Ｂ）は側面図である。(A) is a front view which shows the protective cap assembled | attached to the latch lock apparatus of the door in the latch release state which the cap cover opened, (B) is a side view. 本発明の他例の保護キャップを示す分解斜視図である。It is a disassembled perspective view which shows the protective cap of the other example of this invention. 他例の保護キャップを示し、（Ａ）はキャップカバーの開いた掛け止め解除状態で示す正面図、（Ｂ）はキャップカバーを被せた掛け止め状態で示す正面図である。The protection cap of another example is shown, (A) is the front view shown in the latch release state in which the cap cover is opened, and (B) is the front view in the latch state with the cap cover covered. （Ａ）は他例の保護キャップをキャップカバーを被せた掛け止め状態で示す縦断面図、（Ｂ）はキャップカバーの掛け止め解除途中の状態で示す縦断面図、（Ｃ）はキャップカバーの開いた掛け止め解除状態で示す縦断面図である。(A) is a longitudinal cross-sectional view showing a state in which the protective cap of another example is covered with the cap cover, (B) is a vertical cross-sectional view showing a state in which the cap cover is being released, and (C) is a view of the cap cover. It is a longitudinal cross-sectional view shown in the open latch release state.

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

図１、図２および図３に本発明の一例である保護キャップを扉のラッチ錠装置に組み付けて使用する状態を示し、図４および図５に保護キャップの構成部品を示す。図示例の保護キャップＣは、交通信号機の電気制御ボックス正面の開口部１０を開閉する扉Ｄに取り付けるラッチ錠装置Ｒに組み付けて使用する。ラッチ錠装置Ｒは、ラッチボルトを出没自在に組み込んだ錠ケース１１の正面１１ａに錠前のシリンダ錠１２を固定し、そのシリンダ錠１２の正面から鍵穴１３を外部に臨ませた構造になっている。 1, 2 and 3 show a state in which a protective cap as an example of the present invention is assembled and used in a door latch lock device, and FIG. 4 and FIG. 5 show components of the protective cap. The protective cap C in the illustrated example is used by being assembled to a latch lock device R that is attached to a door D that opens and closes the opening 10 in front of the electric control box of the traffic signal. The latch lock device R has a structure in which a lock cylinder lock 12 is fixed to a front surface 11a of a lock case 11 in which a latch bolt is removably incorporated, and a key hole 13 is exposed to the outside from the front surface of the cylinder lock 12. .

保護キャップＣは、いずれも亜鉛ダイカスト製の、キャップベース１５とキャップカバー２０とからなる。キャップベース１５は、図４、図５および図６に示すように、図中左右の幅方向に横長な略矩形厚板状をなし、中央の厚さ方向裏面側にシリンダ錠１２のシリンダ形状に合わせて円形凹状の嵌付段部１４を設け、その嵌付段部１４から表面１７側に貫通する鍵操作穴１６を同軸線上に穿設している。さらに、表面１７には、鍵操作穴１６の開口周縁に一段厚肉な半楕円状の凸板部１８を形成し、幅方向両側には、図中上下の高さ方向に長い一対の係合凸部１９・１９を設けて両側部を段状に形成し、高さ方向上部には、幅方向に沿って樋部２１を設けると共に、樋部２１を間に挟んだ両端に高さ方向に深く穿設した一対のばね収納穴２２・２２のばね突出口２２ａが開いている。 The protective cap C includes a cap base 15 and a cap cover 20 both made of zinc die casting. As shown in FIGS. 4, 5 and 6, the cap base 15 has a substantially rectangular thick plate shape that is horizontally long in the left and right width directions in the figure, and has a cylinder shape of the cylinder lock 12 on the back side in the thickness direction of the center. In addition, a circular concave fitting step 14 is provided, and a key operation hole 16 penetrating from the fitting step 14 toward the surface 17 is formed on the coaxial line. Furthermore, a thick semi-elliptical convex plate portion 18 is formed on the opening edge of the key operation hole 16 on the surface 17, and a pair of engagements that are long in the vertical direction in the figure on both sides in the width direction. Protrusions 19 and 19 are provided to form both sides in a stepped manner, and at the top in the height direction, a flange portion 21 is provided along the width direction, and at both ends with the flange portion 21 interposed therebetween in the height direction. The spring protrusion ports 22a of the pair of spring housing holes 22 and 22 that are deeply drilled are opened.

嵌付段部１４には、底面１４ａにおいて、鍵操作穴１６の図中上側に、凸板部１８へ貫通する一対の細径なピン取付穴２３・２３を穿設し、下側に同じく貫通するガイド穴２５を穿設している。凸板部１８は、正面の凸板面１８ａを、表面１７に対して傾けてテーパになった摺接面で形成している。即ち、摺接面１８ａは、キャップカバー２０が閉位置にスライドすると、キャップカバー２０の摺接面４１ａと互いに圧接する傾きのテーパ面で形成する。樋部２１は、表面１７側の鍵操作穴１６と裏面側の嵌付段部１４のそれぞれ入口開口の真上に防水壁２１ａ・２１ｂを立設して溝形に形成し、さらに裏面側の防水壁２１ｂの両端を切り欠いて、鍵操作穴１６の高さ方向上部側からばね突出口２２ａの裏面側を経て外部へと至る排水路ｗを形成してなる。排水路ｗは、防水壁２１ａ・２１ｂ間の溝底を山形に成形して底面２１ｃをテーパ面で形成し、浸水した水が傾斜に沿って流れ落ちやすくしている。 The fitting step 14 has a pair of small pin mounting holes 23 and 23 penetrating to the convex plate 18 on the bottom surface 14a on the upper side of the key operation hole 16 in the figure, and the same is formed on the lower side. A guide hole 25 is formed. The convex plate portion 18 is formed by forming a front convex plate surface 18 a as a slidable contact surface that is inclined with respect to the surface 17 and is tapered. That is, the slidable contact surface 18a is formed by a tapered surface having an inclination that presses against the slidable contact surface 41a of the cap cover 20 when the cap cover 20 slides to the closed position. The flange portion 21 is formed in a groove shape by standing up the waterproof walls 21a and 21b directly above the entrance openings of the key operation hole 16 on the front surface 17 side and the fitting step portion 14 on the back surface side. Both ends of the waterproof wall 21b are cut out to form a drainage path w that extends from the upper side in the height direction of the key operation hole 16 to the outside through the back side of the spring protrusion 22a. In the drainage channel w, the bottom of the groove between the waterproof walls 21a and 21b is formed in a mountain shape and the bottom surface 21c is formed as a tapered surface so that the submerged water can easily flow down along the slope.

ガイド穴２５は、図１および図７に示すように、厚さ方向裏面側の第１穴部２５ａより表面１７側の第２穴部２５ｂを一段細径に穿設し、第２穴部２５ｂに表面１７側に開口するピン挿通口２６を有する穴形状になっている。更に、キャップベース１５には、ガイド穴２５の第１穴部２５ａと奥側を連通させた外部操作部材５０の差込穴２７を穿設している。図示例において、外部操作部材５０は、先端に細軸部５０ａを有したシリンダ錠１２に専用の施解除キーである。従って、差込穴２７は、施解除キー５０の細軸部５０ａに合わせて、それを抜き差し可能な細い穴径の隠し穴で形成する。しかも、差込穴２７は、キャップベース１５を扉Ｄの外側板面ｄ上に設置した状態において、施解錠キー５０の図中矢示する差込方向入口２７ａ側に向かうに従い次第に外側板面ｄから離れる方向に傾斜して穿設してなる。 As shown in FIG. 1 and FIG. 7, the guide hole 25 has a second hole 25b on the surface 17 side with a smaller diameter than the first hole 25a on the back surface in the thickness direction. It has a hole shape having a pin insertion opening 26 opened to the surface 17 side. Further, the cap base 15 is provided with an insertion hole 27 of the external operation member 50 in which the first hole portion 25a of the guide hole 25 communicates with the back side. In the illustrated example, the external operation member 50 is an application / release key dedicated to the cylinder lock 12 having a thin shaft portion 50a at the tip. Accordingly, the insertion hole 27 is formed as a hidden hole having a narrow hole diameter that can be inserted and removed in accordance with the thin shaft portion 50a of the application release key 50. In addition, the insertion hole 27 gradually increases from the outer plate surface d toward the insertion direction inlet 27a side indicated by the arrow of the locking / unlocking key 50 in a state where the cap base 15 is installed on the outer plate surface d of the door D. It is formed by inclining in the direction of leaving.

キャップベース１５は、ガイド穴２５にロックピン３５を組み込む。ロックピン３５は、磁性体の金属からなり、細径な軸部３５ａに対し頭部３５ｂを一段太径に形成してなる。ロックピン３５は、ガイド穴２５内へ第１穴部２５ａから挿入し、その第１穴部２５ａの入口を、嵌付段部１４にビス止めする中蓋３６で塞いで組み込む。そして、軸部３５ａをピン挿通口２６から出没自在にガイド穴２５内に遊嵌してなる。中蓋３６は、図１、図４および図５に示すように、嵌付段部１４に合わせて環板状をなし、鍵操作穴１６に合わせて円形の透穴３７を設けると共に外周縁に一対の切欠き穴３８・３８を設けてなる。そして、キャップベース１５は、短軸状のストッパピン４０・４０を切欠き穴３８・３８からピン取付穴２３・２３に貫挿し、図８（Ａ）に示すように、それぞれ先端４０ａ・４０ａを摺接面１８ａから突出させた状態で嵌着している。ばね収納穴２２・２２には、上半分をばね突出口２２ａから突出させて長尺な圧縮コイルばねの付勢ばね４５・４５を挿設する。そして、厚さ方向裏面側には、板状の防水ゴムパッキン４４を接着する。防水ゴムパッキン４４は、キャップベース１５の裏面側の外形状に合わせ、高さ方向上部に樋部２１に対応させて肩部４４ａを形成し、中央には嵌付段部１４と同様にシリンダ形状に合わせて円形の透穴４４ｂを設けてなる。 The cap base 15 incorporates a lock pin 35 in the guide hole 25. The lock pin 35 is made of a magnetic metal, and has a head portion 35b having a one-step thick diameter with respect to a thin shaft portion 35a. The lock pin 35 is inserted into the guide hole 25 from the first hole portion 25a, and the inlet of the first hole portion 25a is closed and assembled with an inner lid 36 that is screwed to the fitting step portion 14. The shaft portion 35a is loosely fitted into the guide hole 25 so as to be able to protrude and retract from the pin insertion port 26. As shown in FIGS. 1, 4 and 5, the inner lid 36 has an annular plate shape in accordance with the fitting step portion 14, a circular through hole 37 in accordance with the key operation hole 16 and an outer peripheral edge. A pair of notch holes 38 and 38 are provided. And the cap base 15 inserts the short shaft-like stopper pins 40, 40 into the pin mounting holes 23, 23 from the cutout holes 38, 38, and as shown in FIG. It is fitted in a state of protruding from the sliding contact surface 18a. The spring housing holes 22 and 22 are inserted with urging springs 45 and 45 of a long compression coil spring with the upper half protruding from the spring protrusion 22a. And the plate-shaped waterproof rubber packing 44 is adhere | attached on the thickness direction back surface side. The waterproof rubber packing 44 has a shoulder portion 44a corresponding to the flange portion 21 at the upper part in the height direction in accordance with the outer shape of the back surface side of the cap base 15, and has a cylinder shape in the center like the fitting step portion 14. A circular through hole 44b is provided in accordance with the above.

一方、キャップカバー２０は、図１、図４および図５に示すとおり、キャップベース１５に被せられるように、図中下部と裏側の背面部を開放した幅方向に横長の略矩形な平箱キャップ状につくり、表側の正面板部３９の内面３９ａに、キャップベース１５の凸板部１８と対応し、内面３９ａより一段凹んだ凹状部４１を形成している。凹状部４１は、凹板面４１ａを、内面３９ａに対して傾けてテーパになった摺接面で形成している。即ち、摺接面４１ａは、キャップカバー２０が閉位置にスライドすると、キャップベース１５の摺接面１８ａと互いに圧接する傾きのテーパ面で形成している。摺接面４１ａには、ストッパピン４０・４０と対応し、高さ方向に一対のガイド溝５５・５５を平行に凹設し、ガイド溝５５・５５間の下側に、ガイド穴２５のピン挿通口２６と対応する位置に掛け止め穴６０を穿設してなる。掛け止め穴６０は、入口にピン挿入口６０ａをあけた有底の小穴で、その穴底に磁石Ｍを嵌着してなる。図示例の磁石Ｍは、永久磁石である。また、キャップカバー２０には、後述するとおり、それをキャップベース１５に被せたとき、差込穴２７の入口２７ａが外部に臨むように、その入口２７ａと対応する位置に半円凹形状の切欠き穴２７ｂが設けられている。 On the other hand, as shown in FIGS. 1, 4, and 5, the cap cover 20 is a substantially rectangular flat box cap that is horizontally long in the width direction with the lower part and the back part on the back side open in the figure so as to be covered with the cap base 15. A concave portion 41 corresponding to the convex plate portion 18 of the cap base 15 and recessed by one step from the inner surface 39a is formed on the inner surface 39a of the front side front plate portion 39. The concave portion 41 has a concave plate surface 41a formed by a slidable contact surface that is tapered with respect to the inner surface 39a. That is, the slidable contact surface 41a is formed by an inclined taper surface that is in pressure contact with the slidable contact surface 18a of the cap base 15 when the cap cover 20 slides to the closed position. A pair of guide grooves 55, 55 corresponding to the stopper pins 40, 40 are formed in the sliding contact surface 41a in parallel in the height direction, and the pin of the guide hole 25 is provided below the guide grooves 55, 55. A retaining hole 60 is formed at a position corresponding to the insertion opening 26. The retaining hole 60 is a bottomed small hole having a pin insertion opening 60a at the entrance, and a magnet M is fitted to the bottom of the hole. The magnet M in the illustrated example is a permanent magnet. Further, as will be described later, the cap cover 20 is cut into a semicircular concave shape at a position corresponding to the inlet 27a so that the inlet 27a of the insertion hole 27 faces the outside when it is put on the cap base 15. A notched hole 27b is provided.

更に、キャップカバー２０の両側部４２・４２には、向い合う内側面と内面３９ａとの間の角縁に、キャップベース１５の係合凸部１９・１９に対応させて係合溝４３・４３を凹設する。上カバー部４９には、内端面にキャップベース１５のばね突出口２２ａ・２２ａと対応する一対のばね押え穴４９ａ・４９ａが凹設されている。 Further, on both side portions 42 and 42 of the cap cover 20, engagement grooves 43 and 43 are formed at the corner edges between the facing inner surface and the inner surface 39 a so as to correspond to the engagement convex portions 19 and 19 of the cap base 15. Is recessed. In the upper cover portion 49, a pair of spring presser holes 49a and 49a corresponding to the spring projecting openings 22a and 22a of the cap base 15 are recessed in the inner end surface.

そこで、キャップカバー２０は、係合溝４３・４３にキャップベース１５の係合凸部１９・１９を係合し、ガイド溝５５・５５にストッパピン４０・４０を係合する一方、ばね突出口２２・２２から突出した付勢ばね４５・４５の上端コイル部４５ａを、ばね押え穴４９ａ・４９ａに嵌め込み、上カバー部４９で付勢ばね４５・４５を押えながらキャップベース１５に被せる。すると、保護キャップＣは、キャップカバー２０がキャップベース１５に被さり鍵操作穴１６を塞いだ閉位置と、鍵操作穴１６を開放する開位置との間をスライド自在に係合する一方、開位置に向けてばね付勢力が働き、図８（Ａ）・図９（Ａ）・図１０（Ａ）に示すように、ガイド溝５５・５５の下側溝壁５５ａをストッパピン４０・４０に押し当てて、キャップカバー２０を開いた開位置に位置決め保持して組み立てられる。 Therefore, the cap cover 20 engages the engagement protrusions 19 and 19 of the cap base 15 with the engagement grooves 43 and 43 and engages the stopper pins 40 and 40 with the guide grooves 55 and 55, respectively, The upper end coil portions 45a of the urging springs 45 and 45 projecting from 22 and 22 are fitted into the spring holding holes 49a and 49a, and the upper base portion 49 is placed on the cap base 15 while pressing the urging springs 45 and 45. Then, the protective cap C is slidably engaged between a closed position where the cap cover 20 covers the cap base 15 and closes the key operation hole 16 and an open position where the key operation hole 16 is opened. As shown in FIGS. 8A, 9A and 10A, the lower groove wall 55a of the guide grooves 55 and 55 is pressed against the stopper pins 40 and 40 as shown in FIGS. Then, the cap cover 20 is assembled while being positioned and held in the open position.

従って、保護キャップＣは、開位置に保持したキャップカバー２０を付勢ばね４５・４５に抗して閉位置までスライドさせて完全にキャップベース１５に被せると、図１および図７に示すように、磁石Ｍでロックピン３５を吸着して軸部３５ａをピン挿通口２６から掛け止め穴６０に係合し、これにより、キャップカバー２０をキャップベース１５に掛け止めて自動的にロックする構造になっている。しかも、保護キャップＣは、図８（Ｂ）・図９（Ｂ）・図１０（Ｂ）に示すように、キャップカバー２０を閉位置までスライドさせて完全にキャップベース１５に被せると、鍵操作穴１６の周りで互いにテーパ面のキャップカバー２０の摺接面４１ａとキャップベース１５の摺接面１８ａとが圧接した状態で重なり合ってキャップカバー２０がキャップベース１５に隙間なく液密に連結される防水構造になっている。 Therefore, when the cap cover 20 held in the open position is slid to the closed position against the biasing springs 45 and 45 and completely put on the cap base 15 as shown in FIGS. Then, the lock pin 35 is attracted by the magnet M, and the shaft portion 35a is engaged with the latch hole 60 from the pin insertion port 26, whereby the cap cover 20 is latched on the cap base 15 and automatically locked. It has become. Moreover, as shown in FIGS. 8 (B), 9 (B), and 10 (B), the protective cap C can be operated as a key by sliding the cap cover 20 to the closed position and completely covering the cap base 15. Around the hole 16, the slidable contact surface 41a of the cap cover 20 having a tapered surface and the slidable contact surface 18a of the cap base 15 overlap each other so that the cap cover 20 is liquid-tightly connected to the cap base 15 without a gap. It is waterproof.

そこで、今度、保護キャップＣは、キャップカバー２０をキャップベース１５から開けるときは、図７（Ｂ）に示すように、外部操作部材として、専用の施解錠キー５０を用い、その細軸部５０ａを切欠き穴２７ｂを通して入口２７ａから差込穴２７に差し込んで頭部３５ｂに係止し、図７（Ｃ）に示すように、ロックピン３５を磁石Ｍに抗してガイド穴２５に押し込んで軸部３５ａを掛け止め穴６０から外し、キャップベース１５に対するキャップカバー２０の掛け止めを解除する。すると、キャップカバー２０が付勢ばね４５・４５の付勢力により開方向へ自動的にスライドし、図８（Ａ）・図９（Ａ）・図１０（Ａ）に示すように、ガイド溝５５・５５の下側溝壁５５ａがストッパピン４０・４０に押し当たる開位置まで開いて鍵操作穴１６を開放する構造になっている。 Therefore, this time, when opening the cap cover 20 from the cap base 15, the protective cap C uses a dedicated locking / unlocking key 50 as an external operation member as shown in FIG. Is inserted into the insertion hole 27 from the inlet 27a through the cutout hole 27b and locked to the head 35b, and the lock pin 35 is pushed into the guide hole 25 against the magnet M as shown in FIG. The shaft portion 35a is removed from the latch hole 60, and the latch of the cap cover 20 with respect to the cap base 15 is released. Then, the cap cover 20 is automatically slid in the opening direction by the urging force of the urging springs 45 and 45, and as shown in FIGS. 8A, 9 A, and 10 A, the guide groove 55. The lower groove wall 55a is opened to the open position where it presses against the stopper pins 40 and 40 to open the key operation hole 16.

さて、上述した構成の保護キャップＣは、図１、図２および図３に示すように、扉Ｄに取り付けるラッチ錠装置Ｒのシリンダ錠１２に組み付けて使用する。ラッチ錠装置Ｒは、鍵穴１３を外部に臨ませたシリンダ錠１２の正面側上部を扉Ｄの呼込み穴７０に通して外側板面ｄから突出させ、錠ケース１１の正面１１ａを内側板面にねじ止めして扉Ｄに固着する。そこで、使用時に、保護キャップＣは、シリンダ錠１２の正面側上部をキャップベース１５の嵌付段部１４に嵌め込み、鍵穴１３に鍵操作穴１６を連通させた状態で、キャップベース１５をシリンダ錠１２上にねじ止めして扉Ｄの外側板面ｄ上に設置する。そして、通常の非施解錠時には、キャップカバー２０をキャップベース１５に被せて鍵操作穴１６を塞ぐことにより、鍵穴１３から雨水や塵埃が侵入したり不正な道具を挿入して悪戯したりしないように鍵穴１３を隠して保護している。 Now, the protective cap C having the above-described configuration is used by being assembled to the cylinder lock 12 of the latch lock device R attached to the door D, as shown in FIGS. In the latch lock device R, the front side upper portion of the cylinder lock 12 with the key hole 13 facing outside is passed through the entrance hole 70 of the door D and protrudes from the outer plate surface d, and the front surface 11a of the lock case 11 is formed on the inner plate surface. Secure to door D with screws. Therefore, when the protective cap C is used, the upper part of the front side of the cylinder lock 12 is fitted into the fitting step 14 of the cap base 15, and the key base hole 16 is connected to the key hole 13, and the cap base 15 is connected to the cylinder lock. 12 is screwed onto the outside plate surface d of the door D. During normal non-locking / unlocking, the cap cover 20 is put on the cap base 15 to close the key operation hole 16 so that rainwater or dust does not enter from the key hole 13 or an unauthorized tool is inserted to make a mischief. The keyhole 13 is hidden and protected.

保護キャップＣは、このようにキャップベース２０に被せたキャップカバー２０が閉位置にあると、図１および図７（Ａ）に示すように、磁石Ｍでロックピン３５を吸着し、その軸部３５ａを掛け止め穴６０に係合させてキャップカバー２０の開閉を自動的にロックすることができる。しかも、保護キャップＣは、キャップカバー２０を閉位置までスライドさせて完全にキャップベース２０に被せると、互いに接触するキャップカバー２０の摺接面４１ａとキャップベース１５の摺接面１８ａとが互いに圧接する傾きのテーパ面で形成されているため、鍵操作穴１６の周りで互いの摺接面４１ａ・１８ａが固く重なり合った食い込み状態で密着し、これにより、キャップベース１５とキャップカバー２０を、たとえ間にガタがあってもこれを吸収して連結し、その結果、鍵操作穴１６を液密に塞いで防水効果を上げることができる。 When the cap cover 20 covering the cap base 20 is in the closed position, the protective cap C attracts the lock pin 35 with the magnet M as shown in FIG. 1 and FIG. The opening / closing of the cap cover 20 can be automatically locked by engaging 35a with the retaining hole 60. Moreover, when the protective cap C is completely covered by sliding the cap cover 20 to the closed position, the sliding contact surface 41a of the cap cover 20 and the sliding contact surface 18a of the cap base 15 that are in contact with each other are pressed against each other. Therefore, the slidable contact surfaces 41a and 18a tightly overlap each other around the key operation hole 16 so that the cap base 15 and the cap cover 20 are attached to each other. Even if there is a gap between them, it is absorbed and connected, and as a result, the key operation hole 16 can be liquid-tightly closed to improve the waterproof effect.

保護キャップＣは、そのようにキャップベース１５とキャップカバー２０とを鍵操作穴１６の周りで液密に密着させて防水するが、それでも、毛細管現象などによっては、キャップベース１５とキャップカバー２０の間に水が染み込んで浸入することが考えられる。しかし、図示例の保護キャップＣでは、キャップベース１５の鍵操作穴１６の周りに溝状樋部２１を設けるため、浸入した水は、樋部２１で受けて鍵操作穴１６の高さ方向上部から排水路を通して外部へと流し落として排水したり、樋部２１に留まっても自然乾燥させたりすることにより防水効果を上げることができる。 The protective cap C waterproofs the cap base 15 and the cap cover 20 in such a manner that the cap base 15 and the cap cover 20 are in close contact with each other around the key operation hole 16 to waterproof. However, depending on the capillary phenomenon or the like, the cap base 15 and the cap cover 20 It is conceivable that water penetrates in between. However, in the illustrated protective cap C, since the grooved flange portion 21 is provided around the key operation hole 16 of the cap base 15, the intruded water is received by the flange portion 21 and the upper portion of the key operation hole 16 in the height direction. The waterproof effect can be increased by draining the water from the water through the drainage channel to the outside or by allowing it to dry naturally even if it remains on the collar 21.

一方、電気制御ボックスの扉Ｄを開けるために、ラッチ錠装置Ｒのシリンダ錠１２を解錠するとき、キャップカバー２０を開ける。キャップカバー２０を開けるときには、図７（Ｂ）および図１１に示すように、施解錠キー５０を用い、施解錠キー５０の摘み５０ｂを手で摘んで細軸部５０ａを、切欠き穴２７ｂを通して入口２７ａから差込穴２７に差し込んで頭部３５ｂに係止させ、ロックピン３５を磁石Ｍに抗してガイド穴２５内に押し込み、図７（Ｃ）に示すように、軸部３５ａを掛け止め穴６０から外してキャップカバー２０の掛け止めロック状態を解除する。すると、保護キャップＣは、図１２、図１３および図１４に示すように、キャップカバー２０が付勢ばね４５・４５の付勢力により開方向へ自動的にスライドし、図８（Ａ）に示すように、ガイド溝５５・５５の下側溝壁５５ａがストッパピン４０・４０に当たる開位置まで開いて鍵操作穴１６を開放し、鍵穴１３を外部に臨ませる。そして、そのまま同じ専用施解錠キー５０を使い、鍵操作穴１６から鍵穴１３に差し込んでシリンダ錠１２を解錠する。 On the other hand, when the cylinder lock 12 of the latch lock device R is unlocked to open the door D of the electric control box, the cap cover 20 is opened. When opening the cap cover 20, as shown in FIGS. 7B and 11, the locking / unlocking key 50 is used, the knob 50b of the locking / unlocking key 50 is picked by hand, and the thin shaft portion 50a passes through the notch hole 27b. Inserted into the insertion hole 27 from the inlet 27a and locked to the head portion 35b, pushed the lock pin 35 into the guide hole 25 against the magnet M, and hung the shaft portion 35a as shown in FIG. The cap cover 20 is released from the latching lock state by removing it from the retaining hole 60. Then, as shown in FIGS. 12, 13, and 14, the cap cover 20 automatically slides in the opening direction by the urging force of the urging springs 45 and 45, as shown in FIG. 8 (A). As described above, the lower groove wall 55a of the guide grooves 55 and 55 is opened to the open position where it contacts the stopper pins 40 and 40, the key operation hole 16 is opened, and the key hole 13 is exposed to the outside. Then, using the same dedicated locking / unlocking key 50 as it is, the cylinder lock 12 is unlocked by being inserted into the keyhole 13 from the key operation hole 16.

従って、図示例の保護キャップＣは、専用施解錠キー５０の保持者が施解錠操作のためにキャップカバー２０を開けるときに、そのまま専用施解錠キー５０を使用し、細軸部５０ａを差込穴２７に差し込む操作をするだけでキャップカバー２０の掛け止めロック状態が解除され、キャップカバー２０を簡単にスライドさせて開けることができる。一方、専用の施解錠キー５０を保持しない者がロック状態で被せたキャップカバー２０を不正に開けようとしても、到底、簡単には開けることはできない。仮に、差込穴２７に気付いて、扉Ｄの周辺で、操作部材として細いピンや軸などを手に入れ、斯かる操作部材を代用して、それを差込穴２７に差し込んで解除操作しない限り、キャップカバー２０を開けることはできない。そのような代用品があるという限定的な条件下で、しかも面倒で時間のかかる不正行為をしない限り、キャップカバー２０は開けられないので、それだけ錠前に対する悪戯を効果的に防止することができる。 Therefore, the protective cap C in the illustrated example uses the dedicated locking / unlocking key 50 as it is when the holder of the dedicated locking / unlocking key 50 opens the cap cover 20 for locking / unlocking operation, and inserts the thin shaft portion 50a. By simply inserting the hole 27 into the hole 27, the latching lock state of the cap cover 20 is released, and the cap cover 20 can be easily slid and opened. On the other hand, even if a person who does not hold the dedicated locking / unlocking key 50 tries to open the cap cover 20 covered in a locked state, it cannot be easily opened. If the user notices the insertion hole 27 and obtains a thin pin or shaft as an operation member around the door D, substitute the operation member and insert it into the insertion hole 27 and do not perform the release operation. As long as the cap cover 20 cannot be opened. Since the cap cover 20 cannot be opened unless there is a troublesome and time-consuming fraud under the limited condition that there is such a substitute, it is possible to effectively prevent mischief against the lock.

図示例の保護キャップＣは、図１および図７に示すように、キャップベース１５が扉Ｄの外側板面ｄ上に設置された状態で錠前のシリンダ錠１２に固着し、差込穴２７の入口２７ａが扉Ｄの外側板面ｄに近接しているため、外部操作部材の施解錠キー５０の摘み５０ｂを手で摘んで細軸部５０ａを差込穴２７に差し込み、キャップカバー２０の掛け止めロック状態を解除する操作をするとき、扉Ｄの外側板面ｄが手に当たって解除操作の障害になりそうな状況にある。しかし、保護キャップＣは、差込穴２７を、キャップベース１５を扉Ｄの外側板面ｄ上に設置した状態において、外部操作部材の施解錠キー５０の図中矢示する差込方向入口２７ａ側に向かうに従い次第に扉Ｄの外側板面ｄから離れる方向に傾斜してキャップベース１５に穿設する構成であるため、施解錠キー５０の細軸部５０ａを差込穴２７に差し込んだとき、施解錠キー５０の摘み部５０ｂ、つまり持ち手側が扉Ｄの外側板面ｄから遠ざかるので、従来のように扉Ｄが手にぶつかって解除操作の障害になるようなことがなく、それだけ解錠操作を手間なく簡単にすることができる。 As shown in FIGS. 1 and 7, the protective cap C of the illustrated example is fixed to the cylinder lock 12 of the lock with the cap base 15 installed on the outer plate surface d of the door D, Since the entrance 27a is close to the outer plate surface d of the door D, the knob 50b of the locking / unlocking key 50 of the external operation member is picked by hand, the thin shaft portion 50a is inserted into the insertion hole 27, and the cap cover 20 is hung. When performing an operation of releasing the stop-lock state, the outer plate surface d of the door D hits the hand and is in a situation where the release operation is likely to be an obstacle. However, the protective cap C has the insertion hole 27 on the side of the insertion direction inlet 27a indicated by the arrow of the locking / unlocking key 50 of the external operation member in the state where the cap base 15 is installed on the outer plate surface d of the door D. Since the cap base 15 is formed so as to incline in a direction away from the outer plate surface d of the door D as it goes to the position, when the thin shaft portion 50a of the locking / unlocking key 50 is inserted into the insertion hole 27, Since the knob 50b of the lock key 50, that is, the handle side is moved away from the outer plate surface d of the door D, the door D does not hit the hand as in the conventional case and the unlocking operation is not obstructed. Can be made easy without any hassle.

ところで、上述した図示実施の形態において、キャップカバー２０を開位置に向けて付勢する付勢ばね４５・４５が圧縮コイルばねであったが、本発明では、付勢ばね４５・４５は圧縮コイルばねに限らず、例えば以下に示す他の実施形態のとおり、ねじりコイルばねを用いてキャップカバー２０を開位置に向けて付勢する構成にすることもできる。尚、他の実施形態において、上記実施形態における構成と同じ構成は、同一の符号を付して以下に説明する。 In the illustrated embodiment described above, the urging springs 45 and 45 that urge the cap cover 20 toward the open position are compression coil springs. In the present invention, the urging springs 45 and 45 are compression coils. For example, as in other embodiments described below, the cap cover 20 may be biased toward the open position using a torsion coil spring. In other embodiments, the same components as those in the above embodiment will be described below with the same reference numerals.

図示他例の保護キャップＣ´は、図１５に示すように、キャップベース１５の高さ方向上部に溝状樋部２１を設けるが、その表側防水壁２１ａの内壁面の両端に、上記圧縮コイルばねのばね収納穴２２・２２に代え、一対のねじりコイルばね６５・６６のばね掛け軸７５・７６を突設する。 As shown in FIG. 15, the protective cap C ′ of the illustrated other example is provided with a groove-like flange portion 21 at the upper part in the height direction of the cap base 15, and the compression coil is provided at both ends of the inner wall surface of the front waterproof wall 21a. Instead of the spring housing holes 22 and 22, spring engagement shafts 75 and 76 of a pair of torsion coil springs 65 and 66 are provided to project.

そこで、保護キャップＣ´は、図１６（Ａ）に示すように、第１のばね掛け軸７５を、第１のねじりコイルばね６５のコイル部６５ａに係合し、短いばね一端６５ｂを樋部２１の溝底面の片側に掛け止める一方、長いばね他端６５ｃをキャップカバー２０の上カバー部４９の内端面に掛け止める。第２のねじりコイルばね６６は、コイル部６６ａに第２のばね掛け軸７６を係合し、短いばね一端６６ｂを樋部２１の溝底面の他側に掛け止める一方、長いばね他端６６ｃを同じ上カバー部４９の内端面に掛け止める。それから、上カバー部４９で第１および第２のねじりコイルばね６５・６６を押え込みながら、キャップカバー２０をキャップベース１５に被せると、保護キャップＣ´は、キャップカバー２０が鍵操作穴１６を塞いだ閉位置と、鍵操作穴１６を開放する開位置の間をスライド自在にキャップベース１５と係合する一方、常時開位置に向けて働くばね付勢力により、ガイド溝５５・５５の下側溝壁５５ａをストッパピン４０・４０に押し当てて、キャップカバー２０を開位置に位置決め保持した状態で組み立てられる。 Accordingly, as shown in FIG. 16A, the protective cap C ′ engages the first spring hook shaft 75 with the coil portion 65a of the first torsion coil spring 65, and the short spring end 65b with the flange portion 21. The other end 65c of the long spring is hooked on the inner end surface of the upper cover portion 49 of the cap cover 20 while being hooked on one side of the groove bottom surface. The second torsion coil spring 66 engages the second spring hooking shaft 76 with the coil portion 66a and hooks the short spring one end 66b on the other side of the groove bottom surface of the flange portion 21, while the long spring other end 66c is the same. Hang on the inner end surface of the upper cover portion 49. Then, when the cap cover 20 is put on the cap base 15 while pressing the first and second torsion coil springs 65 and 66 with the upper cover portion 49, the cap cover 20 closes the key operation hole 16 with the cap cover 20. The lower groove walls of the guide grooves 55 and 55 are engaged with the cap base 15 so as to be slidable between the closed position and the open position where the key operation hole 16 is opened, while being constantly urged toward the open position. The cap cover 20 is assembled in a state where the cap cover 20 is positioned and held at the open position by pressing 55a against the stopper pins 40 and 40.

従って、保護キャップＣ´は、図１６（Ｂ）に示すように、キャップカバー２０をねじりコイルばねの付勢ばね６５・６６に抗して閉位置までスライドさせて完全にキャップベース１５に被せると、図１７（Ａ）に示すように、磁石Ｍでロックピン３５を吸着して軸部３５ａを掛け止め穴６０に係合し、これにより、キャップカバー２０をキャップベース１５に掛け止めて自動的にロックする。一方、キャップカバー２０をキャップベース１５から開けるときは、図１７（Ｂ）に示すように、外部操作部材の施解錠キー５０を用い、その細軸部５０ａを差込穴２７内に差し込んで頭部３５ｂに係止し、図１７（Ｃ）に示すように、ロックピン３５を磁石Ｍに抗してガイド穴２５に押し込んで軸部３５ａを掛け止め穴６０から外し、キャップベース１５に対するキャップカバー２０の掛け止めを解除する。すると、キャップカバー２０がねじりコイルばねの付勢ばね６５・６６の付勢力により開方向へ自動的にスライドし、図１６（Ａ）に示すように、ガイド溝５５・５５の下側溝壁５５ａがストッパピン４０・４０に押し当たる開位置まで開いて鍵操作穴１６を開放する。そして、前述したと同様に、シリンダ錠１２の鍵穴１３を外部に臨ませ、そのまま同じ専用施解錠キー５０を使い、鍵操作穴１６から鍵穴１３に差し込んでシリンダ錠１２を解錠することができる。 Accordingly, as shown in FIG. 16B, the protective cap C ′ is completely covered with the cap base 15 by sliding the cap cover 20 to the closed position against the biasing springs 65 and 66 of the torsion coil spring. 17A, the lock pin 35 is attracted by the magnet M and the shaft portion 35a is engaged with the retaining hole 60, whereby the cap cover 20 is latched on the cap base 15 and automatically Lock to. On the other hand, when opening the cap cover 20 from the cap base 15, as shown in FIG. 17B, the locking / unlocking key 50 of the external operation member is used and the thin shaft portion 50 a is inserted into the insertion hole 27 to As shown in FIG. 17C, the lock pin 35 is pushed into the guide hole 25 against the magnet M to remove the shaft part 35a from the retaining hole 60, and the cap cover for the cap base 15 is engaged. Release 20 latches. Then, the cap cover 20 automatically slides in the opening direction by the urging force of the urging springs 65 and 66 of the torsion coil spring, and the lower groove wall 55a of the guide grooves 55 and 55 is formed as shown in FIG. The key operation hole 16 is opened by opening to the open position where it is pressed against the stopper pins 40. As described above, the cylinder lock 12 can be unlocked by facing the key hole 13 of the cylinder lock 12 to the outside and using the same dedicated locking / unlocking key 50 as it is and inserting it into the key hole 13 from the key operation hole 16. .

ところで、上述した図示実施の形態において、外部操作部材は、先端に細軸部５０ａを形成した錠前のシリンダ錠１２に専用の施解錠キー５０であったが、本発明では、それに限らず、例えばシリンダ錠のような錠前に専用の施解錠キーとは別に、一部に細軸部を形成したキャップカバー２０のロック解除に専用の差込治具を備え、それら施解錠キーと差込治具をキーホルダでまとめて保持する一方、差込穴は、差込治具の細軸部を抜き差し可能な穴形状に形成する構成にすることもできる。 Incidentally, in the illustrated embodiment described above, the external operation member is the locking / unlocking key 50 dedicated to the cylinder lock 12 of the lock having the thin shaft portion 50a formed at the tip. In addition to a lock key used exclusively for locking, such as a cylinder lock, a dedicated insertion jig is provided for unlocking the cap cover 20 formed with a thin shaft part in part, and the lock key and the insertion jig are provided. Are held together with a key holder, and the insertion hole can be formed in a hole shape in which the thin shaft portion of the insertion jig can be inserted and removed.

なお、以上の図示実施の形態において、錠前を固着する板状体は、扉Ｄであったが、それに限らず、錠前が固着される側が壁面や扉枠であれば、それら板状体も含まれる。 In the above illustrated embodiment, the plate-like body that fixes the lock is the door D. However, the plate-like body is not limited thereto, and the plate-like body is also included if the side to which the lock is fixed is a wall surface or a door frame. It is.

Ｃ・Ｃ´ 保護キャップ
Ｄ扉（板状体）
Ｍ磁石
ｄ外側板面
１２シリンダ錠（錠前）
１３鍵穴
１５キャップベース
１６鍵操作穴
１８ａ・４１ａ摺接面
２０キャップカバー
２１樋部
２７差込穴
３５ロックピン
４５圧縮コイルばね（付勢ばね）
６５・６６ねじりコイルばね（付勢ばね）
５０専用施解錠キー（外部操作部材）
５０ａ細軸部 C / C 'Protective cap D Door (plate-shaped body)
M Magnet d Outer plate surface 12 Cylinder lock (lock)
13 Key hole 15 Cap base 16 Key operation hole 18a / 41a Sliding contact surface 20 Cap cover 21 Gutter part 27 Insertion hole 35 Lock pin 45 Compression coil spring (biasing spring)
65 ・ 66 Torsion coil spring (biasing spring)
50 Dedicated locking / unlocking key (external operation member)
50a Fine shaft

Claims

Before the lock that faces the outside from the outer plate surface of the plate-like body, a key base that has a key operation hole that opens on the surface side is connected to the key hole, and the key operation hole is connected to the cap base. In a lock protection cap consisting of a cap cover that opens and closes,
The cap base is provided with a collar portion that receives water entering from between the cap cover along the width direction at the top in the height direction ,
The cap cover has a closed position in which the key operation hole is closed by covering the surface side by fitting the cap base with the upper cover portion placed on the collar portion, and opening the key operation hole. Then, the cap base is slidably connected between the open positions where the key holes are exposed to the outside,
The cap base and the cap cover have sliding contact surfaces that contact each other around the key operation hole when the cap cover slides, and when the cap cover slides to the closed position, In addition to forming a tapered surface with a pressure-contact slope , the flange portion is formed in a groove shape by standing a waterproof wall on each of the front surface side and the back surface side of the cap base. A protective cap for a lock, characterized in that it forms a drainage channel that flows from the back to the outside through the back side .

The cap cover is always spring-biased toward the open position, and when closed, the cap cover is latched to the cap base and positioned and held in the closed position. When open, the cap cover is inserted into an insertion hole provided in the cap base. 2. The lock protection cap according to claim 1, wherein the lock cap is automatically slid to an open position by a spring biasing force when the end of the cap is released to release the latch on the cap base.

The insertion hole gradually inclines away from the outer plate surface as it goes toward the insertion direction entrance side of the external operation member in a state where the cap base is installed on the outer plate surface of the plate-like body. The protective cap for a lock according to claim 2 , wherein the protective cap is formed in a peripheral portion.