JP2010229718A - Hook lock for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a button switch-type hook lock for a sliding door, which makes costs low by simplifying a structure and reducing the number of components, enhances durability, and improves the opening/closing operability of the sliding. <P>SOLUTION: A crank arm 30 is formed in such a shape that the distance L of erection between a supporting shaft 55 and an eccentric hole 25 is set long so that a crank angle α swinging between a first position to bring a hook 20 into a locking attitude and a second position to bring the hook into an unlocking attitude requires only a fixed small angle. The crank arm is erected sideways in a lock case 10. An external operation means S includes a structure which makes a fitting protrusion 47 of a button switch 45 fitted into the fitting hole 50 of the crank arm so that the crank arm is directly operated. In locking/unlocking, one side of a pushing plate of an operation plate 46 is pushed, and the button switch is swung to the depth-direction front and rear sides of the lock case. In this case, the crank arm is pushed by the fitting protrusion of the operation plate fitted into the fitting hole, and swung upward and downward in the range of the small crank angle; and the hook is push-turned depending on the swing direction of the crank arm, and displaced in such a manner as to be turned between the locking and unlocking attitudes. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、外部操作でボタンスイッチを押して鎌を回動し、その先端鎌部を引戸の木口と対向する戸枠側の鎌掛け穴に対し係脱させて引戸を施解錠する、引戸用鎌錠に関する。   The present invention relates to a sickle for sliding doors, in which a button switch is pressed by an external operation to rotate the sickle, and the tip sickle part is engaged with and disengaged from the sickle hole on the door frame side facing the sliding door's mouth to lock and unlock the sliding door. Regarding locks.

従来、引戸用鎌錠の中には、鎌を回動させる外部操作手段がサムターンで、そのサムターンのツマミを回して鎌を回動することにより施解錠するサムターン式のものがある。しかし、サムターン式鎌錠は、身障者や高齢者にとって、サムターンのツマミを指先で摘んで回動操作することが難しく、使い勝手が悪いことから、最近は、外部操作手段がシーソー構造のボタンスイッチで、このボタンスイッチを押して鎌を回動することにより施解錠するボタンスイッチ式鎌錠と云われるものがある（特許文献１参照）。   Conventionally, among the sickle locks for sliding doors, there is a thumb turn type in which the external operation means for rotating the sickle is a thumb turn, and the thumb turn is turned to turn the sickle. However, Samturn-type sickle locks are difficult for the handicapped and elderly people to pick up the thumb-turn knob with their fingertips and are not easy to use. There is a so-called button switch type sickle lock that locks and unlocks by pushing the button switch and rotating the sickle (see Patent Document 1).

従来のボタンスイッチ式鎌錠は、例えば図１３に示すように、引戸ａの戸先側に錠ケース１を内設し、この錠ケース１内の下部に、図中左右の横方向へ移動可能で、引戸ａの閉時に戸枠に当たると後退するトリガ２を設ける一方、上部寄りに、鎌出入口１ａから先端鎌部３ａが突出して戸枠側の鎌掛け穴に掛止する施錠位置と錠ケース１内に引っ込む解錠位置との間を回動する鎌３を支軸３ｂで軸支し、これらトリガ２と鎌３との間において、下端の二股状部４ａをトリガ２の係止ピン２ａに係止し、上端の係合軸４ｂを鎌３の長穴３ｃに係合させて鎌３をトリガ２に連結し、トリガ２が後退すると鎌３を施錠位置へ回動させる作動部材４を支持軸４ｃで回動可能に軸支し、引戸ａが開いた状態では、ねじりばね５で鎌３を解錠位置に付勢する一方、引戸ａを閉じたときに、戸枠に先端部２ｂが当ってトリガ２が後退すると、それに従い作動部材４で鎌３を押し回し、ねじりばね５の一端Ｑの位置が基準線ｄより鎌出入口１ａ側の前方へ出ると、ねじりばね５の付勢力が鎌３を施錠位置へ回動する向きへ働いて、鎌３をさらに回動して先端鎌部３ａを鎌掛け穴に自動的に掛け止める。これにより、引戸ａを開けない限り鎌掛け穴に対する掛け止めが外れない、仮施錠状態にする。しかし、従来のボタンスイッチ式鎌錠では、閉時に、引戸ａが戸枠に強く衝突したりすると、弾みで鎌３が鎌掛け穴から外れて引戸ａが開いてしまうことがある。そこで、鎌３が鎌掛け穴から外れるのを確実に防止するため、仮施錠状態の鎌錠を、更に本施錠状態にすることができる構造になっている。即ち、図１３（Ａ）に示すように、錠ケース１の片側に装着したシーソー構造のボタンスイッチ６を外部操作してトリガ２の移動を規制し、それに基づいて鎌３の回動をロックするようにしている。   For example, as shown in FIG. 13, a conventional button switch type sickle lock has a lock case 1 provided on the door end side of the sliding door a, and can be moved laterally in the left and right directions in the lower part of the lock case 1. On the other hand, a trigger 2 is provided that retracts when it touches the door frame when the sliding door a is closed, and a lock position and a lock case where the tip sickle portion 3a protrudes from the sickle doorway 1a and hooks into the sickle hole on the door frame side. The sickle 3 rotating between the unlocking position retracted into 1 is pivotally supported by the support shaft 3 b, and the lower bifurcated portion 4 a between the trigger 2 and the sickle 3 is engaged with the locking pin 2 a of the trigger 2. , The engaging shaft 4b at the upper end is engaged with the elongated hole 3c of the sickle 3, the sickle 3 is connected to the trigger 2, and when the trigger 2 moves backward, the actuating member 4 that rotates the sickle 3 to the locking position is provided. The shaft 3 is pivotally supported by the support shaft 4c, and when the sliding door a is opened, the sickle 3 is urged to the unlocked position by the torsion spring 5. On the other hand, when the sliding door a is closed and the tip 2b hits the door frame and the trigger 2 moves backward, the sickle 3 is pushed and rotated by the operating member 4 accordingly, and the position of the one end Q of the torsion spring 5 is from the reference line d. When going forward on the sickle entrance 1a side, the urging force of the torsion spring 5 works in a direction to turn the sickle 3 to the locked position, further turning the sickle 3 and automatically using the sickle 3a as a sickle hole. Hang on. Thereby, unless the sliding door a is opened, it will be in the temporary locking state which the latch with respect to a sickle hole cannot be removed. However, in the conventional button switch type sickle lock, when the sliding door a strongly collides with the door frame when closed, the sickle 3 may come off from the sickle hole and open the sliding door a. Therefore, in order to reliably prevent the sickle 3 from being removed from the sickle hole, the temporarily locked sickle lock can be further brought into the present locked state. That is, as shown in FIG. 13 (A), the seesaw-structured button switch 6 attached to one side of the lock case 1 is externally operated to restrict the movement of the trigger 2, and based on this, the rotation of the sickle 3 is locked. I am doing so.

そのため、ボタンスイッチ６は、く字状に屈曲した操作板６ａが中央の枢軸６ｂを支点として揺動するように引手凹部６ｃ内に軸支している。操作板６ａは、その内側板面において、施錠時に押す片側の折曲板部（図中上側）６ｄに、先端が四角い角軸のロック部材７を突設している。一方、トリガ２には、基端側上面にロック用係止凹部２ｃが設けられている。そこで、図示鎌錠を本施錠状態にするとき、ボタンスイッチ６を外部操作し、操作板６ａの折曲板部６ｄを押してシーソーのように傾けると、ロック部材７が錠ケース１の奥行前後方向後方へ突出し、いま後退位置に移動しているトリガ２のロック用係止凹部２ｃに差し込まれ、このトリガ２に連結した作動部材４を介して鎌３の回動がロックされる構造になっている。   For this reason, the button switch 6 is pivotally supported in the pulling recess 6c so that the operation plate 6a bent in a square shape swings around the central pivot 6b. On the inner plate surface of the operation plate 6a, a lock member 7 having a square shaft with a tip protruding from a bent plate portion (upper side in the drawing) 6d to be pressed at the time of locking is provided. On the other hand, the trigger 2 has a locking recess 2c on the upper surface on the base end side. Therefore, when the illustrated sickle lock is brought into the locked state, when the button switch 6 is externally operated and the bent plate portion 6d of the operation plate 6a is pushed and tilted like a seesaw, the lock member 7 moves in the depth direction of the lock case 1. It has a structure in which the rotation of the sickle 3 is locked via the operating member 4 connected to the trigger 2 and inserted into the locking latching recess 2c of the trigger 2 which protrudes rearward and is now moved to the retracted position. Yes.

特開平１０−２９２６９３号公報JP-A-10-292893 特開平１０−２８０７６９号公報Japanese Patent Laid-Open No. 10-280769

ところが、従来のボタンスイッチ式鎌錠では、トリガ２の進退移動を利用して鎌３を施解錠位置に回動させる構造であるので、本施錠時は、そのトリガ２の進退移動を規制して鎌３の回動をロックするために、トリガ２側にロック用係止凹部２ｃを精密加工により凹設し、他方、ボタンスイッチ６側にはロック部材７が部品として別途に必要となり、それだけ構造が複雑になって部品点数が増加し、コストが高くなるという問題がある。   However, since the conventional button switch type sickle lock has a structure in which the sickle 3 is rotated to the unlocking / locking position by using the advance / retreat movement of the trigger 2, the forward / backward movement of the trigger 2 is restricted during the locking. In order to lock the rotation of the sickle 3, a locking latching recess 2c is formed on the trigger 2 side by precision machining, and on the other hand, a lock member 7 is separately required as a component on the button switch 6 side. However, there is a problem that the number of parts increases and the cost increases.

一方で、この従来のボタンスイッチ式鎌錠では、鎌３の下方に揺動手段８を備え、引戸ａを閉めたときに、ボタンスイッチ６の手動操作でトリガ２の進退をロックする本施錠状態にしないで、仮施錠状態のままでも、鎌３が鎌掛け穴から外れるのを防止できるように先端鎌部３ａが鎌掛け穴に掛止して施錠姿勢にある鎌３を揺動手段８で支承する構造になっている。しかし、これでは、そのように重りやバネや軸受け等で構成される揺動手段８が別途に必要となることから、それだけ構造が複雑で部品点数が増加し、コストが更に高くなるという問題がある。   On the other hand, this conventional button switch type sickle lock is provided with a swinging means 8 below the sickle 3, and when the sliding door a is closed, the locked state in which the trigger switch 2 is locked by the manual operation of the button switch 6. The tip sickle 3a is hooked on the sickle hole so that the sickle 3 can be prevented from coming out of the sickle hole even in the temporarily locked state. It has a structure to support. However, this requires a separate swinging means 8 composed of weights, springs, bearings, etc., so that there is a problem that the structure is complicated, the number of parts is increased, and the cost is further increased. is there.

また、従来のボタンスイッチ式鎌錠においても、それが施錠状態にあるときに、異常事態が発生すると、外側から解錠して引戸を開けることができるように、錠ケース１には、通常、ボタンスイッチ６と反対の外側に非常解錠用のロックオープナーを回動可能に組み付けている。その場合、ロックオープナーは、ボタンスイッチ６のロック部材７と同軸に連結すると共に、外側でコイン等を用いて回動されると、その回転運動を、錠ケース１の奥行前後方向の直線運動に変換してロック部材７に伝達する必要がある。従って、従来のボタンスイッチ式鎌錠では、このようにロックオープナー側の回転運動と、ボタンスイッチ６側のロック部材７の直線前後運動との間に運動変換機構が必要となるので、それだけ更に構造が複雑になって部品点数が増加し、その結果、コストが更に一層高くなるという問題がある。   In addition, in the conventional button switch type sickle lock, when it is in a locked state, if an abnormal situation occurs, the lock case 1 is usually equipped so that it can be unlocked from the outside and the sliding door can be opened. A lock opener for emergency unlocking is rotatably mounted on the outer side opposite to the button switch 6. In this case, the lock opener is coaxially connected to the lock member 7 of the button switch 6 and is rotated by using a coin or the like on the outside to change the rotational movement into a linear movement in the depth direction of the lock case 1. It is necessary to convert and transmit to the lock member 7. Therefore, in the conventional button switch type sickle lock, a motion conversion mechanism is required between the rotary motion on the lock opener side and the linear back-and-forth motion of the lock member 7 on the button switch 6 side. However, there is a problem that the number of parts increases and the cost increases as a result.

更に、従来のボタンスイッチ式鎌錠では、トリガ２の進退移動を利用して鎌３を施解錠位置に回動させる構造であるので、閉時は、引戸ａにかかる摩擦抵抗に加え、トリガ２を後退させて鎌３を突出させるねじりばね５のばね力が抵抗となり、開時には、鎌３を解錠位置へ引っ込めるねじりばね５のばね力が抵抗になり、その結果、引戸ａを引いてスライドさせる操作が重くて引戸の開閉操作性が悪いという問題がある。加えて、従来のボタンスイッチ式鎌錠では、本施錠状態にしないで、仮施錠状態のまま、ただ引戸ａの開閉操作を繰り返すときでも、その都度、錠ケース１内では、トリガ２のほか、鎌３、作動部材４、ねじりばね５、揺動手段８など、内部の鎌錠部品が無駄に作動するため、それら鎌錠部品の摩耗が早くて耐久性に乏しいという問題があった。   Further, the conventional button switch type sickle lock has a structure in which the sickle 3 is rotated to the locking / unlocking position by using the forward / backward movement of the trigger 2, so that when it is closed, in addition to the frictional resistance applied to the sliding door a, the trigger 2 The spring force of the torsion spring 5 that retracts the sickle 3 by retreating it becomes resistance, and when it opens, the spring force of the torsion spring 5 that retracts the sickle 3 to the unlocked position becomes resistance, and as a result, the sliding door a is pulled to slide There is a problem that the operation to be performed is heavy and the opening / closing operability of the sliding door is poor. In addition, in the conventional button switch type sickle lock, in addition to the trigger 2, in addition to the trigger 2, Since the internal sickle lock parts such as the sickle 3, the actuating member 4, the torsion spring 5, and the swinging means 8 operate wastefully, there was a problem that the wear of these sickle lock parts was quick and poor in durability.

そこで、本発明が解決しようとする課題は、ボタンスイッチ式の引戸用鎌錠において、構造をシンプルにし、部品点数を少なくして低コスト化を実現し、他方で、耐久性を上げると共に引戸の開閉操作性を良好にすることにある。   Accordingly, the problem to be solved by the present invention is that the button switch type sliding sickle lock has a simple structure, reduces the number of parts and realizes cost reduction. On the other hand, it increases the durability and the sliding door. It is to improve the opening and closing operability.

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、引戸Ａの戸先側の木口７５から鎌出入口１４を外部に向け臨ませて引戸Ａに内設する錠ケース１０と、前記鎌出入口１４から先端鎌部２０ｂが突出する施錠姿勢と前記錠ケース１０内に引っ込む解錠姿勢とに回動変位可能に、該錠ケース１０内に横架した鎌軸１５で吊持し、該鎌軸１５より前記鎌出入口１４とは反対側に片寄った位置で頭部２０ａに偏心穴２５を設けた鎌２０と、先端部に連結突起２９を設け、基端部に支軸５５が貫挿する軸穴３３を設けると共に、該軸穴３３と前記連結突起２９との間に嵌合穴５０を設け、前記連結突起２９を前記偏心穴２５に係合して前記鎌２０に連結する一方、前記支軸５５で該鎌２０が施錠姿勢となる第１位置と解錠姿勢となる第２位置との間を揺動可能に前記錠ケース１０内に枢支し、前記鎌２０の偏心穴２５と前記支軸５５間に縦向きの前記鎌出入口１４に対して横向きに架設するクランクアーム３０と、該クランクアーム３０を揺動操作する外部操作手段Ｓとを備え、前記クランクアーム３０は、前記鎌２０が施錠姿勢となる第１位置と解錠姿勢となる第２位置間を揺動するクランク角αが狭小な一定角度になるように、前記支軸５５と前記偏心穴２５間に掛け渡す架設距離Ｌを横に長く設定し、前記外部操作手段Ｓは、操作板４６および該操作板４６の中央を横断する枢軸部４６ａに凸設した嵌合突起４７からなるボタンスイッチ４５と、前記操作板４６の両端の押圧板部４６ｂ・４６ｃが前記枢軸部４６ａを支点に交互に上下するようにボタンスイッチ４５を揺動可能に支持するスイッチケース７０のような支持部材とを備え、前記ボタンスイッチ４５の枢軸部４６ａを前記クランクアーム３０の架設方向に合わせて前記嵌合突起４７を前記クランクアーム３０の嵌合穴５０に嵌合させて前記錠ケース１０に装着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 directed to the sliding door A with the sickle doorway 14 facing the outside from the wooden entrance 75 of the door-end side of the sliding door A, for example, as shown in the following illustrated embodiment. The lock case 10 is installed in the lock case 10 so as to be rotatable and displaceable between an internal lock case 10, a locking posture in which the tip sickle portion 20 b protrudes from the sickle entrance 14, and an unlocking posture in which the lock case 10 is retracted. The sickle 20 is suspended by a sickle shaft 15, and the sickle 20 is provided with an eccentric hole 25 in the head 20 a at a position offset from the sickle shaft 15 on the side opposite to the sickle entrance 14. A shaft hole 33 through which the support shaft 55 is inserted is provided at the end, and a fitting hole 50 is provided between the shaft hole 33 and the connection protrusion 29, and the connection protrusion 29 is engaged with the eccentric hole 25. The sickle 20 is connected to the sickle 20 while the sickle 20 is locked by the support shaft 55. The sickle doorway that is vertically supported between the eccentric hole 25 of the sickle 20 and the support shaft 55 is pivotally supported in the lock case 10 so as to be swingable between a first position and a second position in an unlocking posture. 14 and an external operation means S for swinging the crank arm 30, and the crank arm 30 is unlocked at a first position where the sickle 20 is in a locking posture. The installation distance L spanned between the support shaft 55 and the eccentric hole 25 is set to be long so that the crank angle α swinging between the second positions in the posture becomes a narrow constant angle, and the external operation The means S includes a button switch 45 comprising an operating plate 46 and a fitting projection 47 projecting from a pivot 46a that crosses the center of the operating plate 46, and pressing plate portions 46b and 46c at both ends of the operating plate 46. Ascending and descending alternately with the pivot 46a as a fulcrum And a support member such as a switch case 70 that supports the button switch 45 so as to be swingable. The pivot 46a of the button switch 45 is aligned with the installation direction of the crank arm 30, and the fitting protrusion 47 is The lock arm 10 is fitted into the fitting hole 50 of the crank arm 30 and is attached to the lock case 10.

請求項２に記載の発明は、請求項１に記載の引戸用鎌錠において、たとえば以下に示す図示実施の形態のとおり、前記錠ケース１０を挟んで前記外部操作手段Ｓと反対側から、非常解錠操作するロックオープナー６５を備え、該ロックオープナー６５は、非常解錠用のキー溝６５ｂが刻設された円板部６５ａに回転伝達可能な軸形状をなす前記支軸５５を突設し、該支軸５５の先端を前記軸穴３３に嵌合させて前記クランクアーム３０と一体回動可能に連結してなることを特徴とする。   According to the second aspect of the present invention, in the sliding door sickle lock according to the first aspect, for example, as shown in the embodiment shown below, an emergency operation is performed from the opposite side of the external operation means S across the lock case 10. A lock opener 65 for unlocking operation is provided, and the lock opener 65 projects the support shaft 55 having a shaft shape capable of transmitting rotation to a disk portion 65a in which a key groove 65b for emergency unlocking is formed. The tip of the support shaft 55 is fitted into the shaft hole 33 and connected to the crank arm 30 so as to be integrally rotatable.

請求項１に記載の引戸用鎌錠では、鎌が施錠姿勢となる第１位置と解錠姿勢となる第２位置間を揺動するクランク角が狭小な一定角度で足りるように、支軸と偏心穴間に掛け渡す架設距離を長く形成してクランクアームを錠ケース内で横向きに架設し、このクランクアームの嵌合穴にボタンスイッチの嵌合突起を嵌合させて、外部操作手段でクランクアームを直接操作する構造となし、施解錠時は、その時に応じて、操作板の押圧板部の一側を押し、ボタンスイッチを錠ケースの前後方向に揺動させると、嵌合穴に嵌合した操作板の嵌合突起にクランクアームが押されて狭小なクランク角の範囲で上下に揺動し、すると、その揺動方向に応じ、鎌を押し回して施錠姿勢と解錠姿勢とに回動変位させることができる。従って、本発明によれば、こうして外部操作手段とクランクアーム間に何ら運動変換機構を介さず、ボタンスイッチを前後に傾動操作して直接クランクアームを揺動し、これにより、鎌を施錠姿勢となる位置と解錠姿勢となる位置とに回動して施解錠することができ、その結果、ボタンスイッチ式の引戸用鎌錠にあって、その構造をシンプルにし、部品点数を少なくして低コスト化を実現させることができる。   In the sickle lock for sliding doors according to claim 1, the support shaft is configured so that the crank angle swinging between the first position where the sickle is in the locked posture and the second position where the sickle is in the unlocked posture is sufficient. The installation distance between the eccentric holes is long, the crank arm is installed horizontally in the lock case, and the button switch's fitting protrusion is fitted into the fitting hole of the crank arm, and the crank is operated by external operation means. The structure is such that the arm is operated directly.When locking / unlocking, if one side of the pressing plate of the operating plate is pressed and the button switch is swung back and forth in the lock case, it will fit into the fitting hole. When the crank arm is pushed by the mating projection of the combined operation plate and swings up and down within a narrow crank angle range, depending on the swing direction, the sickle is pushed and turned into the locked and unlocked positions. It can be rotated and displaced. Therefore, according to the present invention, without any movement conversion mechanism between the external operation means and the crank arm, the button switch is tilted back and forth to swing the crank arm directly, thereby the sickle is in the locked posture. Can be rotated to the position and the unlocking position, and as a result, the button switch type sliding door sickle lock has a simple structure and low number of parts. Cost reduction can be realized.

加えて、請求項１に記載の引戸用鎌錠では、従来のようにトリガの進退移動を利用して鎌を施解錠位置に回動させるのではなく、外部操作手段でクランクアームを直接操作して鎌を施解錠位置に回動させる構造であるので、開閉時、引戸には、その摩擦抵抗以外にスライド操作の抵抗となる外力が加わる余地がなく、それだけ引戸の開閉操作性を軽快で且つ良好なものにすることができ、しかも、引戸を施錠しないで、ただ開閉操作を繰り返すときは、トリガ以外の鎌錠部品は作動しないため、それら鎌錠部品の摩耗も遅くて耐久性に富むという効果を奏することができる。   In addition, the sickle lock for sliding door according to claim 1 does not rotate the sickle to the locking / unlocking position by using the forward / backward movement of the trigger as in the prior art, but directly operates the crank arm by an external operation means. Therefore, when opening and closing, the sliding door has no room for external force to resist sliding operation other than its frictional resistance, and the opening / closing operability of the sliding door is light and easy. It can be made good, and when the opening / closing operation is repeated without locking the sliding door, since the sickle lock parts other than the trigger do not operate, wear of these sickle lock parts is slow and rich in durability. There is an effect.

請求項２に記載の発明によれば、引戸の外側から非常解錠して引戸を開けるときでも、ロックオープナーの回動角度がクランクアームの狭小な揺動角度に対応して短くなり、従って、ロックオープナーの操作に必要な回動ストロークが短くて済む分だけ操作性を良好にすることができる。加えて、請求項２に記載の発明によれば、ロックオープナーは、回転伝達可能な軸形状をなす支軸の先端を軸穴に嵌合し、間に何ら運動変換機構を介さずに直接クランクアームと一体回動可能に連結するため、運動変換のために複雑な機構部品が不要となり、それだけ更に構造がシンプルになって部品点数が削減され、その結果、コストを更に低減することができる。   According to the invention of claim 2, even when the sliding door is opened by emergency unlocking from the outside of the sliding door, the rotation angle of the lock opener is shortened corresponding to the narrow swing angle of the crank arm, The operability can be improved as much as the rotation stroke required for the operation of the lock opener can be shortened. In addition, according to the second aspect of the present invention, the lock opener is configured such that the tip of the support shaft having a shaft shape capable of transmitting rotation is fitted into the shaft hole, and the crank opener is directly cranked without any motion conversion mechanism therebetween. Since it is connected to the arm so as to be able to rotate integrally, complicated mechanical parts are not required for motion conversion, the structure is further simplified, the number of parts is reduced, and as a result, the cost can be further reduced.

（Ａ）引戸用鎌錠を施錠状態で示す正面図、（Ｂ）線Ａ−Ａ断面図、（Ｃ）線Ｂ−Ｂ断面図である。(A) The front view which shows the sickle lock for sliding doors in the locked state, (B) Line AA sectional drawing, (C) Line BB sectional drawing. （Ａ）引戸用鎌錠を解錠状態で示す正面図、（Ｂ）線Ｃ−Ｃ断面図、（Ｃ）線Ｄ−Ｄ断面図である。(A) It is a front view which shows the sickle lock for sliding doors in an unlocked state, (B) Line CC sectional drawing, (C) Line DD sectional drawing. （Ａ）・（Ｂ）にそれぞれ向きを違えて示す鎌錠本体の組立斜視図であるIt is an assembly perspective view of the sickle lock body shown in (A) and (B) in different directions. （Ａ）鎌錠本体を解錠状態で示す正面図、（Ｂ）鎌錠本体を施錠状態で示す正面図である。(A) The front view which shows a sickle-lock main body in an unlocked state, (B) The front view which shows a sickle-lock main body in a locked state. 錠本体の分解斜視図である。It is a disassembled perspective view of a lock main body. 外部操作手段と表示器の分解斜視図である。It is a disassembled perspective view of an external operation means and a display. 外部操作手段の分解斜視図である。It is a disassembled perspective view of an external operation means. （Ａ）外部操作手段の側面図、（Ｂ）外部操作手段の正面図である。(A) Side view of external operation means, (B) Front view of external operation means. 鎌錠本体の表示器側の分解斜視図である。It is a disassembled perspective view of the display side of the sickle lock body. 表示器の分解斜視図である。It is a disassembled perspective view of a display. 引戸に組み込み状態の鎌錠本体を、向きを違えて示す斜視図である。It is a perspective view which shows the sickle-lock main body incorporated in the sliding door in different directions. 引戸に組み込み状態の引手一体型鎌錠本体を、向きを違えて示す斜視図である。It is a perspective view which shows the handle-integrated sickle lock main body incorporated in the sliding door in a different direction. （Ａ）従来の引戸用鎌錠を施錠状態で示す切欠き側面図、（Ｂ）その引戸用鎌錠を解錠状態で示す縦断面図である。(A) It is a notch side view which shows the conventional sickle lock for sliding doors in a locked state, (B) It is a longitudinal cross-sectional view which shows the sickle lock for sliding doors in an unlocked 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は、本発明の一例である引戸用鎌錠を引戸に組み込んで施錠状態で示し、図２は、その引戸用鎌錠を解錠状態で示し、図３は、鎌錠本体の組立斜視図である。図示例の引戸用鎌錠は、例えば木製のトイレ用扉の引戸Ａに組み込む鎌錠本体Ｒと、戸枠Ｆの縦枠材８５に取り付ける鎌受けＴとからなる。鎌錠本体Ｒは、その錠本体Ｋと、錠本体Ｋを挟んで片側に組み付ける外部操作手段Ｓと、他側に組み付ける表示器Ｄとで構成する。   FIG. 1 shows a sliding door sickle lock incorporated in a sliding door as an example of the present invention, FIG. 2 shows the sliding door sickle lock in an unlocked state, and FIG. 3 shows an assembled perspective view of the sickle lock body. FIG. The sliding door sickle lock shown in the drawing includes, for example, a sickle lock main body R incorporated in a sliding door A of a wooden toilet door and a sickle holder T attached to a vertical frame member 85 of the door frame F. The sickle lock main body R is composed of the lock main body K, external operation means S assembled on one side with the lock main body K interposed therebetween, and a display D assembled on the other side.

錠本体Ｋは、図４および図５に示すように、錠ケース１０と、錠ケース１０内に組み込んで支持する鎌２０、クランクアーム３０、付勢ばね３５、トリガ４０を備えた構成になっている。   As shown in FIGS. 4 and 5, the lock body K includes a lock case 10, a sickle 20 that is incorporated and supported in the lock case 10, a crank arm 30, a biasing spring 35, and a trigger 40. Yes.

錠ケース１０は、片側を開放した浅底なケース本体１１に蓋板１２を被せて薄箱状に組み立てる。ケース本体１１は、図中左右の横方向一側に長手の取付板１３を接着し、取付板１３の図中上下の縦方向中間に細長い鎌出入口１４を設け、鎌出入口１４の図中下側にトリガ穴１８を設けてなる。底板部１１ａには、横方向一側の図中上方に鎌軸１５を、下方にトリガ軸１６を突設し、横方向他側の上方にばね掛け軸１７を突設する一方、コーナー板部１１ｃの近くに異形な貫通穴１９と、縦長な逃げ穴４９を横に並べて穿設し、貫通穴１９と縦に並べて２つの丸穴の位置決め穴２１と呼込み軸穴２２を穿設している。貫通穴１９は、丸穴部１９ａの周縁を一部扇形に切り欠いて規制穴部１９ｂを設け、全体に鍵穴状に穿設してなる。更に、コーナー板部１１ｃには、切欠き凹部２６・２７を凹設している。こうした形状のケース本体１１には、鎌軸１５近傍のコーナーにクッションゴム３１を固着している。他方、蓋板１２には、ケース本体１１側の鎌軸１５、トリガ軸１６、ばね掛け軸１７がそれぞれ嵌着する軸穴２３を設けるほか、ケース本体１１側と同じ貫通穴１９、逃げ穴４９、２つの丸い位置決め穴２１と呼込み軸穴２２が設けられ、また、切欠き凹部２６・２７に対応するＵ形の切欠き２６ａ・２７ａが設けられている。   The lock case 10 is assembled in a thin box shape by covering a shallow case body 11 with one side open and a cover plate 12. The case main body 11 has a long mounting plate 13 bonded to one side in the horizontal direction in the figure, and a long and narrow sickle inlet / outlet 14 is provided in the vertical middle of the mounting plate 13 in the figure. Is provided with a trigger hole 18. On the bottom plate portion 11a, a sickle shaft 15 is projected on the upper side in the figure on one side in the horizontal direction, a trigger shaft 16 is projected on the lower side, and a spring hook shaft 17 is projected on the upper side on the other side in the horizontal direction. An odd-shaped through hole 19 and a vertically long escape hole 49 are formed side by side in the vicinity, and two round hole positioning holes 21 and a receiving shaft hole 22 are formed side by side with the through hole 19. The through hole 19 is formed by cutting out the periphery of the round hole portion 19a in a part of a sector to provide a restriction hole portion 19b, and is formed in a keyhole shape as a whole. Furthermore, the notch recessed part 26 * 27 is provided in the corner board part 11c. In the case body 11 having such a shape, a cushion rubber 31 is fixed to a corner near the sickle shaft 15. On the other hand, the cover plate 12 is provided with a shaft hole 23 into which the sickle shaft 15, the trigger shaft 16, and the spring hook shaft 17 on the case body 11 side are fitted, respectively, and the same through-hole 19, relief hole 49, and the like on the case body 11 side. Two round positioning holes 21 and an incoming shaft hole 22 are provided, and U-shaped notches 26a and 27a corresponding to the notch recesses 26 and 27 are provided.

鎌２０は、回転中心穴２４を有する板状の頭部２０ａと、頭部２０ａからＬ状に延びる先端鎌部２０ｂとからなる。頭部２０ａには、回転中心穴２４より先端鎌部２０ｂとは反対側へ片寄った偏心位置に、径方向に長い偏心穴２５を穿設し、周縁を一部切り欠いて一対の当接凹部２０ｃ・２０ｄを設けてなる。   The sickle 20 includes a plate-like head 20a having a rotation center hole 24 and a tip sickle 20b extending in an L shape from the head 20a. In the head 20a, an eccentric hole 25 that is long in the radial direction is formed at an eccentric position that is offset from the rotation center hole 24 to the side opposite to the distal sickle portion 20b, and a pair of contact recesses are formed by partially cutting the periphery. 20c and 20d are provided.

クランクアーム３０は、羽子板状のアーム本体３０ａの先端に、連結突起２９を板厚方向片側に向け突設する一方、基端に、円筒突部３２を板厚方向両側に突設している。円筒突部３２は、貫通穴１９の穴形状に合わせ、丸穴部１９ａに嵌合可能な短筒部３２ａと、短筒部３２ａの周縁から径方向外向きに突出して規制穴部１９ｂに係入可能な係入凸部３２ｂとからなる。短筒部３２ａには、ロックオープナー６５の支軸５５に合わせて、回転伝達が可能な断面四角形の軸穴３３を穿設している。特に、アーム本体３０ａには、軸穴３３と連結突起２９間に嵌合穴５０が設けられている。嵌合穴５０は、アーム本体３０ａの長さ方向に沿って横に長い楕円穴で、穴縁に沿って板厚方向両側に***したリブ５０ａが凸設されている。   The crank arm 30 has a connecting projection 29 projecting toward one end in the plate thickness direction at the distal end of the armature 30a having a blade plate shape, and cylindrical projections 32 projecting from both sides in the plate thickness direction at the base end. The cylindrical protrusion 32 is adapted to the hole shape of the through-hole 19 and projects from the peripheral edge of the short cylinder part 32a that can be fitted into the round hole part 19a radially outward from the peripheral edge of the short cylinder part 32a. It consists of an engaging protrusion 32b that can be inserted. A shaft hole 33 having a quadrangular cross section capable of transmitting rotation is formed in the short cylinder portion 32a in accordance with the support shaft 55 of the lock opener 65. In particular, the arm main body 30 a is provided with a fitting hole 50 between the shaft hole 33 and the connecting projection 29. The fitting hole 50 is an elliptical hole that is long horizontally along the length direction of the arm main body 30a, and ribs 50a protruding on both sides in the plate thickness direction along the hole edge are projected.

トリガ４０は、Ｌ形のトリガ本体４１と、圧縮コイルばねのトリガスプリング４２を備える。トリガ本体４１は、一端側の突端にストッパ部４１ａを形成する一方、他端側には、一端側と直交する長手方向に沿ってばね溝４３を形成すると共に、突端に突当軸４１ｂを突設してなる。   The trigger 40 includes an L-shaped trigger body 41 and a trigger spring 42 of a compression coil spring. The trigger body 41 has a stopper portion 41a formed at a protruding end on one end side, while a spring groove 43 is formed on the other end side along a longitudinal direction orthogonal to the one end side, and the abutting shaft 41b protrudes from the protruding end. Set up.

そこで、錠本体Ｋは、鎌２０、クランクアーム３０、付勢ばね３５、トリガ４０をケース本体１１に組み付け、そのケース本体１１に蓋板１２を被せて鎌軸１５と、トリガ軸１６と、ばね掛け軸１７を軸穴２３に嵌着して薄箱な錠ケース１０を組み立て、以下のように、鎌軸１５で鎌２０を、支軸５５でクランクアーム３０を、トリガ軸１６でトリガ４０をそれぞれ枢支し、付勢ばね３５は、ばね掛け軸１７に装着する。   Therefore, the lock body K has the sickle 20, the crank arm 30, the urging spring 35, and the trigger 40 assembled to the case main body 11, and the case main body 11 is covered with the cover plate 12, and the sickle shaft 15, the trigger shaft 16, and the spring. Assembling the thin lock case 10 by fitting the hanging shaft 17 into the shaft hole 23, the sickle 20 with the sickle shaft 15, the crank arm 30 with the support shaft 55, and the trigger 40 with the trigger shaft 16, as follows: The urging spring 35 is pivotally supported and attached to the spring hook shaft 17.

即ち、鎌２０は、回転中心穴２４に鎌軸１５を通して枢着し、鎌出入口１４から先端鎌部２０ｂが突出する施錠姿勢と錠ケース１０内に引っ込む解錠姿勢とに、略９０度回動変位可能に鎌軸１５で吊持する。   That is, the sickle 20 is pivotally attached to the rotation center hole 24 through the sickle shaft 15, and is rotated approximately 90 degrees between a locking posture in which the distal sickle portion 20 b projects from the sickle doorway 14 and an unlocking posture in which the sickle 20 is retracted into the lock case 10. The sickle shaft 15 is suspended so that it can be displaced.

クランクアーム３０は、連結突起２９を偏心穴２５に係合して鎌２０に連結する一方、円筒突部３２の短筒部３２ａを貫通穴１９の丸穴部１９ａに嵌合し、係入凸部３２ｂを規制穴部１９ｂに係入し、軸穴３３に貫挿する支軸５５を支点として、所定のクランク角αだけ揺動するように鎌２０の頭部２０ａと支軸５５間に横向きに掛け渡す。即ち、クランクアーム３０は、支軸５５を支点にクランク角αの範囲で揺動すると、その揺動方向に応じて、先端の連結突起２９で鎌２０を押し回し、図４に示すように、鎌２０が施錠姿勢となる第１位置と解錠姿勢となる第２位置との間を回動するようになっている。そこで、クランクアーム３０は、鎌２０が施錠姿勢となる施錠位置と解錠姿勢となる解錠位置間の略９０度回動するのに必要なクランク角αを、狭小な、例えば略２０度に設定し、即ち、貫通穴１９の丸穴部１９ａの中心点Ｐを支点としたクランクアーム３０が揺動するストロークの角度αが狭小な略２０度で足りるように錠ケース１０内に架設する。   The crank arm 30 engages the connecting protrusion 29 with the eccentric hole 25 and connects it to the sickle 20, while the short cylindrical portion 32 a of the cylindrical protrusion 32 is fitted into the round hole portion 19 a of the through hole 19, The portion 32b is engaged with the restricting hole portion 19b, and the side of the sickle 20 between the head portion 20a and the support shaft 55 is swung by a predetermined crank angle α with the support shaft 55 inserted through the shaft hole 33 as a fulcrum. Hang over. That is, when the crank arm 30 swings in the range of the crank angle α with the support shaft 55 as a fulcrum, the sickle 20 is pushed and rotated by the connecting projection 29 at the tip according to the swing direction, as shown in FIG. The sickle 20 is configured to rotate between a first position where the sickle 20 is locked and a second position where the sickle 20 is unlocked. Therefore, the crank arm 30 reduces the crank angle α necessary for the sickle 20 to rotate approximately 90 degrees between the locking position where the sickle 20 is in the locking position and the unlocking position where the sickle is in the unlocking position to a narrow, for example, approximately 20 degrees. In other words, it is installed in the lock case 10 so that the stroke angle α with which the crank arm 30 swings with the center point P of the round hole portion 19a of the through hole 19 as a fulcrum is small, approximately 20 degrees is sufficient.

そのため、錠本体Ｋでは、クランク角αが狭小な略２０度になるように、クランクアーム３０において、支軸５５が貫挿する軸穴３３を、先端の連結突起２９から長さ方向に離隔した位置に穿設すると共に、ケース本体１１において、円筒突起１９が嵌合する貫通穴１９を鎌軸１５から横方向に離隔した位置に穿設し、これにより、軸穴３３に貫挿する支軸５５と、連結突起２０が係合する鎌２０の偏心穴２５間に掛け渡すクランクアーム３０の架設距離Ｌを横に長く形成する。一方、貫通穴１９は、クランクアーム３０の係入凸部３２ｂが係入する規制穴部１９ａを、クランク角αが狭小な略２０度の角度範囲に常に規制されるように、それに対応する開き角度の扇形に穿設する。   Therefore, in the lock body K, the shaft hole 33 through which the support shaft 55 is inserted in the crank arm 30 is separated from the connecting projection 29 at the tip in the length direction so that the crank angle α is narrow and approximately 20 degrees. In the case body 11, the through hole 19 into which the cylindrical protrusion 19 is fitted is formed in a position spaced laterally from the sickle shaft 15, and thereby the support shaft that is inserted into the shaft hole 33. 55 and the construction distance L of the crank arm 30 that spans between the eccentric holes 25 of the sickle 20 with which the connecting projection 20 engages are formed to be long in the lateral direction. On the other hand, the through hole 19 has a corresponding opening so that the restricting hole portion 19a in which the engaging protrusion 32b of the crank arm 30 is engaged is always restricted to a narrow angle range of approximately 20 degrees. Drill into an angle fan.

付勢ばね３５は、ねじりコイルばねで、コイル部をばね掛け軸１７に係着して一端のばね部を後側壁１１ｂに掛け止め、他端のばね部をクランクアーム３０に掛け止めて、クランクアーム３０を、常時、図４（Ａ）に示すように、鎌２０が解錠姿勢をなる第２位置に回動付勢している。   The urging spring 35 is a torsion coil spring, the coil portion is engaged with the spring hook shaft 17, one end of the spring portion is hooked on the rear side wall 11 b, and the other end of the spring portion is hooked on the crank arm 30. As shown in FIG. 4 (A), the sickle 20 is always urged to rotate to the second position where the unlocking posture is set.

トリガ４０は、トリガ本体４１を、突当軸４１ｂをトリガ穴１８に向けてケース本体１１の下側壁１１ｄ上にスライド自在に載置し、トリガ軸１６を、ばね溝４３内に係入したトリガスプリング４２の一端フック４２ａに係合して錠ケース１０内に組み込み、常時はトリガスプリング４２のばね付勢力で突当軸４１ｂをトリガ穴１８から突出させる一方、ストッパ部４１ａを先端鎌部２０ｂに掛け止めて鎌２０の回動を規制し、先端鎌部２０ｂが錠ケース１０内に引っ込んだ解錠姿勢を保持し、鍵出入口１４から突出するのを防止する。そのとき、鎌２０には、当接凹部２０ｃにクッションゴム３１が当っている。従って、引戸Ａの閉時に、トリガ４０の突当軸４１ｂが戸枠Ｆの戸先側縦枠材８５に突き当り、トリガスプリング４２に抗して規制解除位置にスライド移動すると、ストッパ部４１ａの先端鎌部２０ｂに対する掛け止めが外れて鎌２０の回動規制が解除されるようになっている。   The trigger 40 has a trigger body 41 slidably mounted on the lower side wall 11 d of the case body 11 with the abutting shaft 41 b facing the trigger hole 18, and the trigger shaft 16 is engaged in the spring groove 43. Engage with one end hook 42a of the spring 42 and incorporate it into the lock case 10, and normally the abutment shaft 41b protrudes from the trigger hole 18 by the spring biasing force of the trigger spring 42, while the stopper portion 41a is attached to the tip sickle portion 20b. It latches and the rotation of the sickle 20 is restricted, the tip sickle part 20b is held in the unlocked posture retracted into the lock case 10, and is prevented from protruding from the key doorway 14. At that time, the sickle 20 is hit with the cushion rubber 31 against the contact recess 20c. Therefore, when the sliding door A is closed, the abutting shaft 41b of the trigger 40 abuts against the door frame side vertical frame member 85 of the door frame F, and slides to the restriction release position against the trigger spring 42. The latch with respect to the sickle part 20b is removed, and the rotation restriction of the sickle 20 is released.

外部操作手段Ｓは、図６および図７に示すように、ボタンスイッチ４５と、ボタンスイッチ４５を組み付けて支持するスイッチケース（支持部材）７０とを備える。ボタンスイッチ４５は、操作板４６に一対の嵌合突起４７を凸設してなる。操作板４６は、く字状に屈曲させて中央を横断する枢軸部４６ａの両端に、対称な押圧板部４６ｂ・４６ｃを形成してなる。枢軸部４６ａには、軸線方向に軸挿通穴４８が穿設されている。嵌合突起４７は、押圧板部４６ｂ・４６ｃが互いに曲げ起きる内側板面側において、枢軸部４６ａ上の両端から、先細ピン状に凸設してなる。スイッチケース７０は、縦長矩形の本体板部７０ａに、ボタンスイッチ４５の外形に合わせて矩形箱状で片側開放の浅底な支持凹部５９を設け、支持凹部５９の底壁部５９ａの幅方向両側に、ボタンスイッチ４５の嵌合突起４７と対応させて、左右に一対の縦長なガイド穴５６が設けられている。尚、本体板部５０ａの上下両端には、呼込みスタッド５４・５４を立設している。底壁部５９ａには、中心丸穴６０の図中上下に一対の位置決めピン６１・６２が突設されている。   As shown in FIGS. 6 and 7, the external operation means S includes a button switch 45 and a switch case (support member) 70 that supports the button switch 45 in an assembled state. The button switch 45 is formed by projecting a pair of fitting protrusions 47 on the operation plate 46. The operation plate 46 is formed by forming symmetrical pressing plate portions 46b and 46c at both ends of a pivot portion 46a which is bent like a letter and crosses the center. A shaft insertion hole 48 is formed in the axial direction in the pivot portion 46a. The fitting projection 47 is formed in a tapered pin shape from both ends on the pivot portion 46a on the inner plate surface side where the pressing plate portions 46b and 46c are bent. The switch case 70 has a vertically long rectangular main body plate portion 70 a provided with a shallow concave recess 59 that is rectangular box-shaped and open on one side in accordance with the outer shape of the button switch 45, and both widthwise sides of the bottom wall 59 a of the support recess 59. Further, a pair of vertically long guide holes 56 are provided on the left and right sides corresponding to the fitting protrusions 47 of the button switch 45. In addition, incoming studs 54 and 54 are provided upright at both upper and lower ends of the main body plate portion 50a. A pair of positioning pins 61 and 62 project from the bottom wall portion 59a above and below the center round hole 60 in the drawing.

斯かる外部操作手段Ｓにおいて、ボタンスイッチ４５は、それぞれ細軸端部５２ａを軸押え５１に嵌着した一対の軸芯５２を、軸スプリング５３を間に挟んで枢軸部４６ａの軸挿通穴４８に同軸的に挿設して組み立てる。それから、ボタンスイッチ４５は、嵌合突起４７の先端をガイド穴５６に嵌合してスイッチケース７０の支持凹部５９内に嵌入し、支持凹部５９の両側壁５９ｂに有する細軸穴２８に、軸押え５１の細管部５１ａを係合してスイッチケース７０の支持凹部５９に組み込み、図８に示すごとく、操作板４６の押圧板部４６ｂ・４６ｃが枢軸部４６ａを支点として支持凹部５９内で深さ方向に交互に上下するようにスイッチケース７０で揺動可能に支持し、以って、外部操作手段Ｓを組み立ててなる。そこで、外部操作手段Ｓは、ボタンスイッチ４５が揺動する角度が、鎌２０が施錠姿勢をとる第１位置と解錠姿勢をとる第２位置間を揺動するクランクアーム３０の狭小なクランク角α（略２０度）に対応する角度になるように、嵌合突起４７が嵌合するガイド穴５６を一定の穴長さに規定している。   In such an external operation means S, the button switch 45 includes a pair of shaft cores 52 each having a thin shaft end 52a fitted to the shaft presser 51, and a shaft insertion hole 48 in the pivot 46a with a shaft spring 53 interposed therebetween. Insert and assemble coaxially with Then, the button switch 45 is fitted into the support recess 59 of the switch case 70 by fitting the tip of the fitting protrusion 47 into the guide hole 56, and the shaft switch 28 is inserted into the narrow shaft hole 28 provided on both side walls 59 b of the support recess 59. The narrow tube portion 51a of the presser 51 is engaged and incorporated in the support recess 59 of the switch case 70. As shown in FIG. 8, the press plate portions 46b and 46c of the operation plate 46 are deep in the support recess 59 with the pivot 46a as a fulcrum. The external operation means S is assembled by supporting the switch case 70 so as to swing up and down alternately in the vertical direction. Therefore, the external operating means S is configured such that the angle at which the button switch 45 swings is a narrow crank angle of the crank arm 30 that swings between the first position where the sickle 20 takes the locking posture and the second position where the sickle 20 takes the unlocking posture. The guide hole 56 into which the fitting protrusion 47 is fitted is defined to have a constant hole length so as to have an angle corresponding to α (approximately 20 degrees).

表示器Ｄは、図９および図１０に示すように、表示器本体６３と、表示板６４と、ロックオープナー６５と、表示カバー６６を備える。表示器本体６３は、図中上下に縦長な矩形板で、中央に軸貫通穴６７を設けると共に、軸貫通穴６７の周りに浅い嵌付凹部６３ａを形成してなる。嵌付凹部６３ａは、中心に軸貫通穴６７が貫通する円形部位と、扇形の回動規制部位６８とで全体を瓢箪形状に似た形に凹設されてなる。回動規制部位６８は、錠ケース１０に有する貫通穴１９の規制穴部１９ａと同様に、クランクアーム３０のクランク角αと対応する開き角度の扇形に凹設してなる。表示板６４は、Ｕ字型の挟持部６４ａと、先端に向け次第に幅広となる表示部６４ｂとで、全体を略Ｙ形に形成してなる。表示部６４ｂの表面には、例えば使用中（施錠中）を示す、例えば赤色の着色が施されている。ロックオープナー６５は、円板部６５ａと、円板部６５ａから突出する前記支軸５５とからなる。円板部６５ａには、非常解錠用のキー溝６５ｂが刻設されている。支軸５５は、基部５５ａの先端に、一段細い角軸部５５ｂを突設してなる。支軸５５の基部５５ａは、外周に平面のカット面５５ｃを形成し、角軸部５５ｂは、クランクアーム３０の軸穴３３の穴形状に合わせて回転伝達可能な四角形の角軸からなる。表示カバー６６は、表示板６４の表示部６４ｂの形状に合わせた穴形状に開けた表示窓７１と、ロックオープナー６５の円板部６５ａに合わせて丸穴状の操作用窓７２を設けてなる。   As shown in FIGS. 9 and 10, the display D includes a display main body 63, a display plate 64, a lock opener 65, and a display cover 66. The display body 63 is a vertically long rectangular plate in the figure, and is provided with a shaft through hole 67 at the center and a shallow fitting recess 63 a around the shaft through hole 67. The fitting recess 63a is formed in a circular shape through which the shaft through hole 67 penetrates in the center and a fan-shaped rotation restricting portion 68, and is recessed in a shape similar to a bowl shape as a whole. The rotation restricting portion 68 is recessed in a fan shape having an opening angle corresponding to the crank angle α of the crank arm 30, similarly to the restricting hole portion 19 a of the through hole 19 provided in the lock case 10. The display plate 64 is formed in a substantially Y shape as a whole by a U-shaped sandwiching portion 64a and a display portion 64b that gradually becomes wider toward the tip. The surface of the display portion 64b is colored, for example, in red indicating that it is in use (locked), for example. The lock opener 65 includes a disc portion 65a and the support shaft 55 protruding from the disc portion 65a. A key groove 65b for emergency unlocking is formed in the disc portion 65a. The support shaft 55 is formed by projecting a one-step thin angular shaft portion 55b at the tip of the base portion 55a. The base portion 55a of the support shaft 55 forms a flat cut surface 55c on the outer periphery, and the square shaft portion 55b is formed of a rectangular angular shaft that can transmit rotation in accordance with the shape of the shaft hole 33 of the crank arm 30. The display cover 66 is provided with a display window 71 having a hole shape matching the shape of the display portion 64b of the display plate 64 and a round hole-shaped operation window 72 corresponding to the disc portion 65a of the lock opener 65. .

そこで、表示器Ｄは、基部５５ａのカット面５５ｃを挟持部６４ａで挟んで表示板６４をロックオープナー６５に装着してから、ロックオープナー６５の支軸５５を表示器本体６３の軸貫通穴に貫挿し、表示板６４を、嵌付凹部６３ａに嵌め付けてロックオープナー６５と一体に回動可能に表示器本体６３に組み付け、表示器本体６３に表示カバー６６を被せて組み立てる。表示カバー６６は、錠本体Ｋに表示器本体６３を組み付けた後、表示器本体６３に被せる。   Therefore, the display unit D attaches the display plate 64 to the lock opener 65 with the cut surface 55c of the base portion 55a sandwiched between the clamping portions 64a, and then the support shaft 55 of the lock opener 65 is inserted into the shaft through hole of the display unit main body 63. The display plate 64 is fitted into the fitting recess 63a and assembled to the display main body 63 so as to be rotatable together with the lock opener 65, and the display main body 63 is covered with the display cover 66 for assembly. The display cover 66 is put on the display body 63 after the display body 63 is assembled to the lock body K.

これら表示器Ｄと外部操作手段Ｓを、図３に示すように錠本体Ｋに組み付けてから、以下のように引戸Ａ内に組み込むと、鎌錠本体Ｒが組み立てられる。なお、図１および図２に示すように鎌錠本体Ｒを組み込む引戸Ａは、予め、錠本体Ｋの外形状に合わせて、戸先側の木口７５から戸尻側に向けて縦穴７６が穿設され、一方、縦穴７６に連通するように図中手前の内側板面７７に外部操作手段Ｓの外形状に合わせて取付穴が穿設され、外側板面には、表示器Ｄの外形状に合わせて嵌め込み穴が穿設されている。そこで、錠本体Ｋは、縦穴７６に差し込んで引戸Ａ内に組み込み、鎌出入口１４を外部に臨ませて取付板１３を木口７５にねじ止めする。   When the display D and the external operation means S are assembled to the lock body K as shown in FIG. 3 and then incorporated into the sliding door A as follows, the sickle lock body R is assembled. As shown in FIGS. 1 and 2, the sliding door A incorporating the sickle lock main body R has a vertical hole 76 drilled in advance from the door end side wood end 75 toward the door bottom side in accordance with the outer shape of the lock main body K. On the other hand, a mounting hole is formed in the inner plate surface 77 on the front side in the figure so as to communicate with the vertical hole 76 in accordance with the outer shape of the external operation means S, and the outer shape of the indicator D is formed on the outer plate surface. A fitting hole is drilled in accordance with the above. Therefore, the lock body K is inserted into the vertical hole 76 and incorporated into the sliding door A, and the mounting plate 13 is screwed to the wooden end 75 with the sickle doorway 14 facing outside.

一方、外部操作手段Ｓは、ボタンスイッチ４５の枢軸部４６ａを横向きのクランクアーム３０の架設方向に合わせてから、引戸Ａの内側板面７７の取付穴にスイッチケース７０を嵌め込み、位置決めピン６１を切欠き凹部２６に係止すると共に位置決めピン６２を位置決め穴２１に係合させて、取付位置を位置決める一方、一側の嵌合突起４７の先端を切欠き凹部２７に係止し、他方の嵌合突起４７の先端を、クランクアーム３０の嵌合穴５０に嵌合して錠ケース１０の肩部に装着する。   On the other hand, the external operating means S aligns the pivot 46a of the button switch 45 with the installation direction of the lateral crank arm 30, and then fits the switch case 70 into the mounting hole of the inner plate surface 77 of the sliding door A, While engaging with the notch recess 26 and engaging the positioning pin 62 with the positioning hole 21 to position the mounting position, the tip of the one-side fitting projection 47 is locked with the notch recess 27 and the other The tip of the fitting protrusion 47 is fitted into the fitting hole 50 of the crank arm 30 and attached to the shoulder of the lock case 10.

他方、表示器Ｄは、引戸Ａの外側板面の嵌め込み穴に表示器本体６３を嵌め込み、錠ケース１０内でロックオープナー６５の支軸５５を、錠ケース１０内でクランクアーム３０の軸穴３３に貫挿し、併せて、外側板面から、呼込みネジ７９を表示器本体６３のねじ挿通穴に通して呼込みスタッド５４にねじ込み、表示器本体６３とスイッチケース７０を引戸Ａの両板面に固定し、これにより、表示器Ｄ側の表示板６４を挟持したロックオープナー６５と、錠ケース１０内のクランクアーム３０とを、一体回動可能に連結して外部操作手段Ｓと表示器Ｄとを錠本体Ｋに組み付け、これにより、鎌錠本体Ｒとして組み立てて、図１１に示すように引戸Ａに組み込んでなる。   On the other hand, the indicator D is inserted into the fitting hole on the outer plate surface of the sliding door A, and the support shaft 55 of the lock opener 65 is inserted into the lock case 10 and the shaft hole 33 of the crank arm 30 is inserted into the lock case 10. At the same time, the screw 79 is inserted into the screw stud 54 through the screw insertion hole of the display main body 63 from the outer plate surface, and the display main body 63 and the switch case 70 are fixed to both plate surfaces of the sliding door A. Thus, the lock opener 65 sandwiching the display plate 64 on the display D side and the crank arm 30 in the lock case 10 are connected so as to be integrally rotatable so that the external operation means S and the display D are connected. It is assembled to the lock body K, thereby assembled as a sickle lock body R, and assembled to the sliding door A as shown in FIG.

さて、図示鎌錠では、閉時、図２に示すように、開いた引戸Ａを引いて閉方向へ横にスライド移動し、図１に示すように、戸枠Ｆの縦枠材８５に戸先側の木口７５が当って閉止すると、錠本体Ｋでは、トリガ４０の突当軸４１ｂが戸枠Ｆの戸先側縦枠材８５に突き当り、トリガスプリング４２に抗して規制解除位置にスライド移動すると、ストッパ部４１ａの先端鎌部２０ｂに対する掛け止めが外れて、鎌２０の回動規制が解除される。そこで、この閉時、内側から引戸Ａを施錠するときは、図１に示すように、操作板４６の押圧板部４６ｂ側を押し、ボタンスイッチ４５を、嵌合突起４７の先端が図中下向きの施錠方向に傾動し、嵌合突起４７を介してクランクアーム３０を支軸５５を中心に第１位置から第２位置へクランク角αだけ付勢ばね３５に抗して揺動し、偏心穴２５に係合した連結突起２９で鎌２０を押し回して施錠姿勢とし、鎌出入口１４から先端鎌部２０ｂを突出させて鎌受けＴの鎌掛け穴８１に掛け止め、こうして引戸Ａを施錠する。そのとき、鎌２０には、クッションゴム３１が当接凹部２０ｄに当ってクッションになっている。   Now, in the illustrated sickle lock, when closed, as shown in FIG. 2, the open sliding door A is pulled and slid horizontally in the closing direction, and the door is placed on the vertical frame member 85 of the door frame F as shown in FIG. When the front end 75 is closed and closed, in the lock body K, the abutment shaft 41b of the trigger 40 abuts against the door end side vertical frame member 85 of the door frame F and slides to the restriction release position against the trigger spring 42. If it moves, the latching with respect to the front-end sickle part 20b of the stopper part 41a will remove | deviate, and the rotation control of the sickle 20 will be cancelled | released. Therefore, when the sliding door A is locked from the inside when closed, as shown in FIG. 1, the pressing plate portion 46b side of the operation plate 46 is pushed, the button switch 45 is pushed, and the tip of the fitting projection 47 faces downward in the drawing. And the crank arm 30 is pivoted from the first position to the second position about the support shaft 55 through the fitting projection 47 against the biasing spring 35 by the crank angle α. The sickle 20 is pushed and rotated by the connecting projection 29 engaged with 25, and the distal sickle portion 20b is projected from the sickle entrance 14 and latched in the sickle hole 81 of the sickle receiver T, and the sliding door A is thus locked. At this time, the sickle 20 is cushioned by the cushion rubber 31 against the contact recess 20d.

反対に、図示鎌錠で施錠した引戸Ａを開ける場合は、図２に示すように、操作板４６の押圧板部４６ｃ側を押し、ボタンスイッチ４５を、嵌合突起４７の先端が図中上向きの解錠方向に揺動させる。すると、クランクアーム３０が、付勢ばね３５の付勢力と相俟って、支軸５５を中心に第２位置から第１位置へクランク角α揺動し、偏心穴２５に係合した連結突起２９で鎌２０を押し回して解錠姿勢とし、先端鎌部２０ｂと鎌受けＴの鎌掛け穴８１との掛け止めを外して錠ケース１０内に引っ込め、こうして引戸Ａを解錠する。そのとき、鎌２０には、クッションゴム３１が当接凹部２０ｃに当ってクッションになっている。しかる後、引戸Ａを引いて開方向へスライド移動させて開ける。   On the other hand, when opening the sliding door A locked with the illustrated sickle lock, as shown in FIG. 2, the pressing plate portion 46c side of the operation plate 46 is pushed, the button switch 45 is pushed, and the tip of the fitting projection 47 is upward in the drawing. Rock in the unlocking direction. Then, coupled with the urging force of the urging spring 35, the crank arm 30 swings the crank angle α from the second position to the first position around the support shaft 55 and engages with the eccentric hole 25. At 29, the sickle 20 is pushed and turned into an unlocked posture, the hook between the tip sickle portion 20b and the sickle hook hole 81 of the sickle receiver T is removed and retracted into the lock case 10, and the sliding door A is unlocked. At this time, the sickle 20 is cushioned by the cushion rubber 31 hitting the contact recess 20c. Thereafter, the sliding door A is pulled and slid in the opening direction to be opened.

図示鎌錠では、上述のように鎌２０が施錠姿勢となる第１位置と解錠姿勢となる第２位置間を揺動するクランク角αが狭小な略２０度で足りるように、支軸５５と偏心穴２５間に掛け渡す架設距離Ｌを長く形成してクランクアーム３０を錠ケース１０内で横向きに架設し、このクランクアーム３０の嵌合穴５０にボタンスイッチ４５の嵌合突起４７を嵌合させて、外部操作手段Ｓでクランクアーム３０を直接操作する構造となし、施解錠時は、その時に応じて、操作板４６の押圧板部４６ｂ・４６ｃの一側を押し、ボタンスイッチ４５を錠ケース１０の前後方向に揺動させると、嵌合穴５０に嵌合した操作板４６の嵌合突起４７にクランクアーム３０が押されて狭小なクランク角αの範囲で上下に揺動し、すると、その揺動方向に応じて、鎌２０を押し回して施錠姿勢と解錠姿勢とに回動変位させることができる。従って、図示鎌錠では、こうして外部操作手段Ｓとクランクアーム３０間に何らの運動変換機構を介さず、ボタンスイッチ４５を前後に傾動操作して直接クランクアーム３０を揺動し、これにより、鎌２０を施錠姿勢となる位置と解錠姿勢となる位置とに回動して施解錠することができる。   In the illustrated sickle lock, as described above, the support shaft 55 is sufficient so that the crank angle α swinging between the first position where the sickle 20 is in the locked posture and the second position where the sickle is in the unlocked posture is sufficient. The crank arm 30 is installed sideways in the lock case 10 so that the installation distance L is extended between the eccentric hole 25 and the fitting projection 47 of the button switch 45 is fitted into the fitting hole 50 of the crank arm 30. In combination, the crank arm 30 is directly operated by the external operation means S. When locking / unlocking, according to the time, one side of the pressing plate portions 46b and 46c of the operating plate 46 is pushed, and the button switch 45 is pressed. When the lock case 10 is swung in the front-rear direction, the crank arm 30 is pushed by the fitting protrusion 47 of the operation plate 46 fitted in the fitting hole 50 and swung up and down within a narrow crank angle α range. Then, according to the swing direction, sickle 2 It can be rotated and displaced between the locked posture and the unlocked posture by pushing and turning 0. Therefore, in the illustrated sickle lock, the crank switch 30 is swung directly by tilting the button switch 45 back and forth without any motion conversion mechanism between the external operation means S and the crank arm 30, thereby 20 can be rotated to the position where the locking posture is set and the position where the unlocking posture is set, and unlocked.

また、図示鎌錠では、引戸Ａの開閉時、ボタンスイッチ４５を押して引戸Ａを施解錠するとき、同時に、クランクアーム３０に連結したロックオープナー６５の支軸５５と一体に表示板６４が正逆方向に回動する。すると、表示板６４の正逆回動方向に応じて、表示窓７１から表示板６４の表示部６４ｂが切り替え表示され、これにより、引戸Ａの施解錠状態を外部に表示する。一方、例えば異常事態を発生したため、外側から解錠して引戸Ａを開けたいときは、コイン等を用い、これを非常解錠操作用のキー溝６５ｂに係止してロックオープナー６５を回動する。すると、支軸５５と一体にクランクアーム３０が第２位置から第１位置へクランク角α揺動し、鎌２０を解錠姿勢となる位置へ回動する。すると、先端鎌部２０ｂが鎌受けＴの鎌掛け穴８１から外れ、こうして引戸Ａの外側から非常解錠される。そこで、図示鎌錠では、外側から非常解錠して引戸Ａを開けるとき、ロックオープナー６５の回動角度がクランクアーム３０の狭小な揺動角度αに対応して短くなり、従って、ロックオープナー６５の操作に必要な回動ストロークが短くて済み、それだけ操作性を良好にすることができる。   Also, in the illustrated sickle lock, when the sliding door A is opened and closed, when the button switch 45 is pressed to lock and unlock the sliding door A, the display plate 64 is integrated with the support shaft 55 of the lock opener 65 connected to the crank arm 30 at the same time. Rotate in the direction. Then, the display part 64b of the display board 64 is switched and displayed from the display window 71 according to the forward / reverse rotation direction of the display board 64, thereby displaying the locking / unlocking state of the sliding door A to the outside. On the other hand, for example, when an abnormal situation has occurred and it is desired to unlock the door from outside and open the sliding door A, a coin or the like is used, which is locked in the key groove 65b for emergency unlocking operation and the lock opener 65 is rotated. To do. Then, the crank arm 30 swings from the second position to the first position integrally with the support shaft 55 to rotate the sickle 20 to a position where the sickle 20 is in the unlocked posture. Then, the front sickle portion 20b is detached from the sickle hole 81 of the sickle receptacle T, and thus is emergency unlocked from the outside of the sliding door A. Therefore, in the illustrated sickle lock, when the sliding door A is opened by emergency unlocking from the outside, the rotation angle of the lock opener 65 is shortened corresponding to the narrow swing angle α of the crank arm 30. The rotation stroke required for the operation is short, and the operability can be improved accordingly.

加えて、図示鎌錠では、ロックオープナー６５は、回転伝達可能な角軸状をなす支軸５５の先端を軸穴３３に嵌合し、間に運動変換機構を介さずに、直接クランクアーム３０と一体回動可能に連結するため、運動変換のために複雑な機構部品が不要となり、それだけ更に構造がシンプルになって部品点数が削減され、以って、コストを更に低減させることができる。   In addition, in the illustrated sickle lock, the lock opener 65 is fitted directly to the crank arm 30 with the tip of the support shaft 55 having a rectangular shaft shape capable of transmitting rotation being fitted into the shaft hole 33 without using a motion conversion mechanism therebetween. Therefore, complicated mechanism parts are not required for motion conversion, the structure is further simplified, the number of parts is reduced, and the cost can be further reduced.

ところで、本発明の引戸用鎌錠では、例えば図１２に示すように、外部操作手段Ｓのスイッチケース７０と表示器Ｄの表示器本体６３に、それぞれ引手部７６を一体に備える構成にすることもできる。   By the way, in the sickle lock for sliding doors of the present invention, for example, as shown in FIG. 12, the switch case 70 of the external operation means S and the display body 63 of the display D are each provided with a pulling portion 76 integrally. You can also.

Ａ 引戸
Ｄ 表示器
Ｆ 戸枠
Ｌ 架設距離
Ｒ 鎌錠本体
Ｓ 外部操作手段
Ｔ 鎌受け
α クランク角
１０ 錠ケース
１４ 鎌出入口
１５ 鎌軸
２０ 鎌
２０ｂ 先端鎌部
２５ 偏心穴
３０ クランクアーム
３３ 軸穴
３５ 付勢ばね
４０ トリガ
４５ ボタンスイッチ
４６ 操作板
４６ａ 枢軸部
４７ 嵌合突起
５０ 嵌合穴
５５ 支軸
６５ ロックオープナー
６５ｂ キー溝
７０ スイッチケース（支持部材） A sliding door D indicator F door frame L installation distance R sickle lock body S external operation means T sickle receiver α crank angle 10 lock case 14 sickle door 15 sickle shaft 20 sickle 20b tip sickle portion 25 eccentric hole 30 crank arm 33 shaft hole 35 Energizing spring 40 Trigger 45 Button switch 46 Operation plate 46a Pivot 47 Fitting protrusion 50 Fitting hole 55 Support shaft 65 Lock opener 65b Key groove 70 Switch case (support member)

Claims (2)

引戸の戸先側の木口から鎌出入口を外部に向け臨ませて引戸に内設する錠ケースと、
前記鎌出入口から先端鎌部が突出する施錠姿勢と前記錠ケース内に引っ込む解錠姿勢とに回動変位可能に、該錠ケース内に横架した鎌軸で吊持し、該鎌軸より前記鎌出入口とは反対側に片寄った位置で頭部に偏心穴を設けた鎌と、
先端部に連結突起を設け、基端部に支軸が貫挿する軸穴を設けると共に、該軸穴と前記連結突起との間に嵌合穴を設け、前記連結突起を前記偏心穴に係合して前記鎌に連結する一方、前記支軸で該鎌が施錠姿勢となる第１位置と解錠姿勢となる第２位置との間を揺動可能に前記錠ケース内に枢支し、前記鎌の偏心穴と前記支軸間に縦向きの前記鎌出入口に対して横向きに架設するクランクアームと、
該クランクアームを揺動操作する外部操作手段とを備え、
前記クランクアームは、
前記鎌が施錠姿勢となる第１位置と解錠姿勢となる第２位置間を揺動するクランク角が狭小な一定角度になるように、前記支軸と前記偏心穴間に掛け渡す架設距離を横に長く設定し、
前記外部操作手段は、
操作板および該操作板の中央を横断する枢軸部に凸設した嵌合突起からなるボタンスイッチと、前記操作板の両端の押圧板部が前記枢軸部を支点として交互に上下するように前記ボタンスイッチを揺動可能に支持する支持部材とを備え、前記ボタンスイッチの枢軸部を前記クランクアームの架設方向に合わせて前記嵌合突起を前記クランクアームの嵌合穴に嵌合させて前記錠ケースに装着してなる、引戸用鎌錠。 A lock case installed inside the sliding door with the sickle doorway facing the outside from the mouth of the sliding door end,
Suspended and disengaged between a locking posture in which the sickle portion projects from the sickle doorway and an unlocking posture in which the sickle is retracted into the lock case, and is suspended by a sickle shaft that is horizontally mounted in the lock case. A sickle with an eccentric hole in the head at a position offset to the opposite side of the sickle entrance,
A connecting projection is provided at the distal end, a shaft hole through which the support shaft penetrates is provided at the base end, a fitting hole is provided between the shaft hole and the connecting projection, and the connecting projection is engaged with the eccentric hole. Coupled to the sickle, and pivotally supported in the lock case so as to be swingable between a first position where the sickle is locked and a second position where the sickle is unlocked with the support shaft, A crank arm erected laterally with respect to the vertical sickle doorway between the eccentric hole of the sickle and the support shaft;
An external operation means for swinging the crank arm,
The crank arm is
An installation distance spanning between the support shaft and the eccentric hole so that a crank angle swinging between the first position where the sickle is in the locking posture and the second position where the sickle is in the unlocking posture becomes a narrow constant angle. Set a long side,
The external operation means is
A button switch composed of an operating plate and a fitting projection projecting from a pivot portion that crosses the center of the operation plate, and the button so that the pressing plate portions at both ends of the operation plate are alternately raised and lowered with the pivot portion as a fulcrum. A support member for swingably supporting the switch, and the lock case by fitting the fitting protrusion into the fitting hole of the crank arm with the pivot portion of the button switch aligned with the direction in which the crank arm is installed. A sickle lock for sliding doors. 前記錠ケースを挟んで前記外部操作手段と反対側から、非常解錠操作するロックオープナーを備え、該ロックオープナーは、非常解錠用のキー溝が刻設された円板部に回転伝達可能な軸形状をなす前記支軸を突設し、該支軸の先端を前記軸穴に嵌合させて前記クランクアームと一体回動可能に連結してなる、請求項１に記載の引戸用鎌錠。   A lock opener for emergency unlocking operation is provided from the opposite side of the external operation means across the lock case, and the lock opener is capable of transmitting rotation to a disk portion provided with a key groove for emergency unlocking. 2. The sliding door sickle lock according to claim 1, wherein the supporting shaft having a shaft shape is protruded, and the tip end of the supporting shaft is fitted into the shaft hole so as to be integrally rotatable with the crank arm. .

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