WO2010087035A1

WO2010087035A1 - Lock device and door using same

Info

Publication number: WO2010087035A1
Application number: PCT/JP2009/054583
Authority: WO
Inventors: 丈季田所
Original assignee: 株式会社ニフコ
Priority date: 2009-02-02
Filing date: 2009-03-10
Publication date: 2010-08-05
Also published as: JP2010174588A

Abstract

Disclosed in the present invention is a lock device (5), which is used for a door (9B) that is switched between being closed and being open with respect to an open part in the side of a main body and that is always energized in the opening direction, and said device has a holder (2) that engages with or detaches from a receiving part (55a) when the door is closed. The device is equipped a with case (1) that is provided on the door and that supports the holder 2 in a slidable manner, a latch (3) that is supported at the top of the holder and is able to pivot up or down against the energizing force, a regulating plate (35) that is able to slide on holder (2) and is able to contact or separate from the latch (3), an energizing means that energizes the latch (3) in a direction to engage with a receiving part (8d) through the regulating plate (35) and the holder (2), and cam mechanisms (39, P) set at an operating history to control sliding of the regulating plate (35) to keep latch (3) engaged with the receiving part (8d) held down by the regulating plate (35) by the door being pushed from the opening direction to the closing direction against the energizing force, and to separate the regulating plate (35) from the latch (3) to disengage the latch by again pushing the door in the closing direction. Thus, a lock device with high strength and outstanding operability and appearance can be provided.

Description

ロック装置及びそれを用いた扉Lock device and door using the same

　本発明は、扉に対する押し操作により扉を閉扉状態（扉が閉じた状態）に保つよう係合し、次の押し操作により係合解除するロック装置及びそれを用いた扉に関する。なお、対象の扉は、本体側開口部に対し一端側を支点（この一端側は形態例のごとくガイドレール等に沿って移動される構成を含む）として回動されることで本体側開口部を塞ぐ閉扉状態と開放する開扉状態（扉が開いた状態）とに切り換えられるタイプである。好ましくは、クローゼットや間仕切り等に用いられて折り畳み展開しつつ移動可能な中折れ式扉（折戸）である。 The present invention relates to a lock device that engages so as to keep a door in a closed state (a state in which the door is closed) by a pushing operation on the door and releases the engagement by a next pushing operation, and a door using the same. Note that the target door is rotated by using one end side as a fulcrum with respect to the main body side opening (this one end side includes a configuration that moves along a guide rail or the like as in the embodiment). The door can be switched between a closed state that closes the door and an open state that opens the door (a state where the door is open). Preferably, it is a foldable door (folding door) that is used for a closet, a partition, or the like and is movable while being folded and unfolded.

　例えば、従来の中折れ式扉では、扉同士がロック装置により閉扉状態に保持されると共に、扉同士を連結している蝶番が付勢手段を有しその付勢力により閉扉状態での係合や保持作用を補う場合もある。また、従来構造では、ロック装置の係合解除と共に扉を開方向へ引く際の取っ手が必要となるため、見栄えが扉の意匠面側の取っ手により悪くなる。特許文献１はその対策例を開示している。構造特徴は、操作時に使用する取っ手として、扉に設けられる手掛け用凹所を蝶番（ヒンジ）との関係で見えにくく設けることで外観性を向上したものである。また、公知技術には、取っ手の一種としてワンプッシュで扉表面に没入させ、この状態で再度プッシュすることにより扉表面に突出する出没式取っ手にした構成、閉扉状態における扉のばた付きを押さえるための手段として、レール内に納めるためのキャッチ部材を設けた構成もある。 For example, in a conventional folding door, the doors are held in a closed state by a locking device, and a hinge connecting the doors has a biasing means, and the biasing force causes the engagement in the closed state. In some cases, the holding action is supplemented. Moreover, in the conventional structure, since the handle for pulling the door in the opening direction is required together with the engagement of the lock device, the appearance is worsened by the handle on the design surface side of the door. Patent Document 1 discloses a countermeasure example. The structural feature is that the appearance is improved by providing a handle recess provided on the door that is difficult to see in relation to a hinge as a handle used during operation. In addition, in the publicly known technology, as a kind of handle, it is immersed in the door surface with one push and pushed again in this state to make a retractable handle that protrudes on the door surface, suppressing the flapping of the door in the closed state As a means for this, there is a configuration in which a catch member is provided for being accommodated in the rail.

　日本国特許出願公開第２００８－２４０３７７号公報（特許文献１）の構造では、手掛け用の凹所を小さくするほど見栄えを改善できるが、当該凹所を小さくすると操作性が悪くなる。また、陥没式取っ手では、扉表面を完全には平面にできない上、操作も悪くなる。また、キャッチ部材を用いる構造では、キャッチ部材の取付精度が悪いと操作性も悪くなる。なお、従来のロック装置には、扉を最初の押し操作により本体側に係合保持し、次の押し操作により係合解除するプッシュ・プッシュ係止機構（例えば、日本国特許出願公開第２００６－２１４１０５号公報に開示の構成）がある。しかし、この構造は、ロック装置と該ロック装置に係脱する棒状係脱部材（ストライカ等と称されている）が必要となることから、係合強度に制約され易く、また、扉がクローゼット等のように大型で重い場合や、中折れ式の場合には適用が難しい。 In the structure of Japanese Patent Application Publication No. 2008-240377 (Patent Document 1), the appearance can be improved as the recess for handling is reduced, but the operability is deteriorated if the recess is reduced. In addition, with the retractable handle, the door surface cannot be made completely flat, and the operation becomes poor. Moreover, in the structure using a catch member, if the mounting accuracy of the catch member is poor, the operability is also deteriorated. In the conventional locking device, a push-push locking mechanism (for example, Japanese Patent Application Publication No. 2006-2006) that engages and holds the door on the main body side by the first pushing operation and releases the engagement by the next pushing operation. No. 214105 publication). However, this structure requires a locking device and a rod-like engaging / disengaging member (called a striker or the like) that engages with or disengages from the locking device, so that the engagement strength is easily restricted, and the door is closet or the like. It is difficult to apply in the case of large and heavy as in the case of, or in the case of a folding type.

　本発明の目的は以上のような背景から、閉扉状態で本体の開口部側に設けられた係止用受け部に係脱、つまり突出係合したり係合解除するロック部材を有した高強度のロック装置として、特に、扉が開から押されることで閉扉状態に係合保持され、閉扉状態から再び押されることで係合解除され、かつ開方向へ付勢力で回動されるようにし操作性及び見栄えを向上することにある。 The object of the present invention is based on the above background, and has a high strength with a locking member that engages / disengages, that is, engages / disengages from / into the engagement receiving portion provided on the opening side of the main body in the closed state. As a locking device, in particular, the door is engaged and held in the closed state by being pushed from the open state, the engagement is released by being pushed again from the closed state, and the door is rotated by the biasing force. It is to improve sex and appearance.

　上記目的を達成するために、本発明は、後述の形態例により例示されるように、本体側開口部に対し一端側を支点として回動されて前記開口部を塞ぐ閉扉状態と開放する開扉状態とに切り換えられ、かつ常時開方向へ付勢されている扉９Ｂに用いられて、閉扉状態で前記開口部側の係止用受け部８ｄに係脱するラッチ３を有したロック装置であって、前記扉９Ｂに配設されてホルダー２を摺動可能に支持しているケース１と、前記ホルダー２の上側に付勢力に抗して転倒可能に枢支されている前記ラッチ３と、前記ホルダー２に摺動可能かつ前記ラッチ３に接離可能に配設されている規制板３５と、前記規制板３５及びホルダー２を介して前記ラッチ３を前記受け部８ｄと係合する方向へ付勢している付勢手段（Ｓ１又は／及びＳ２）と、前記規制板３５の摺動を制御して、前記扉を付勢力に抗して開から閉方向へ押すことにより前記ラッチ３を前記規制板３５にて転倒規制した状態で前記受け部８ｄに係合可能にし、前記扉を再度閉方向へ押すことにより前記規制板３５を前記ラッチ３から離間して該ラッチの係合を解除可能にする動作履歴に設定されたカム機構（３９，Ｐ）とを備えていることを特徴としている。 In order to achieve the above object, the present invention, as exemplified by the embodiments described later, is opened with a closed state in which the opening is rotated with one end as a fulcrum with respect to the opening on the main body side to close the opening. This is a locking device having a latch 3 which is used for the door 9B which is switched to the state and is always urged in the opening direction, and is engaged with and disengaged from the locking receiving portion 8d on the opening side in the closed state. A case 1 disposed on the door 9B and slidably supporting the holder 2, and the latch 3 pivotally supported on the upper side of the holder 2 so as to be able to fall against an urging force; A restricting plate 35 slidably mounted on the holder 2 and detachably attached to the latch 3, and the latch 3 is engaged with the receiving portion 8 d via the restricting plate 35 and the holder 2. Energizing means (S1 or / and S2) energizing; By controlling the sliding of the regulating plate 35 and pushing the door against the urging force from the open to the closed direction, the latch 3 is engaged with the receiving portion 8d in a state of being regulated by the regulating plate 35 to fall. A cam mechanism (39, P) set to an operation history that enables the engagement of the latch by separating the latch plate 3 from the latch 3 by pushing the door in the closing direction again. It is characterized by having.

　また、本発明のロック装置は、前記ケース１に対し前記ホルダー２と同方向に摺動可能に支持されている第２ホルダー４と、前記第２ホルダー４にばね部材Ｓ４を介して出没可能に支持されていると共に、前記開口部側で前記受け部に並設されている仮受け部（８ｄ）に係脱される補助ラッチ４５と、前記ケース側に枢支した状態で一端側を前記第２ホルダー４に連結し、他端側を前記ホルダー２に連結しているシーソレバー２８とからなる押し込み防止手段を有し、前記扉９Ｂが開から閉方向へ押される過程で、前記第２ホルダー４が前記ホルダー２及びシーソレバー２８を介して上昇され、前記補助ラッチ４５が付勢力により突出し前記仮受け部（８ｄ）と一時的に係合して前記扉を閉扉状態に保った後、前記ラッチ３が前記受け部８ｄに対し前記補助ラッチ４５の係合解除前に係合してその閉扉状態に保持することがより好ましい。 In addition, the locking device of the present invention can support the second holder 4 supported to be slidable in the same direction as the holder 2 with respect to the case 1, and can be moved into and out of the second holder 4 via a spring member S4. An auxiliary latch 45 that is supported and engaged / disengaged with a temporary receiving portion (8d) arranged in parallel with the receiving portion on the opening side, and one end side of the auxiliary latch 45 is pivotally supported on the case side. 2 in the process of pushing the door 9B in the closing direction from the open to the closing direction. The second holder 4 has a push-in prevention means comprising a seesaw lever 28 connected to the holder 4 and the other end connected to the holder 2. Is lifted through the holder 2 and the seesaw lever 28, and the auxiliary latch 45 protrudes by an urging force to temporarily engage the temporary receiving portion (8d) to keep the door closed, and then the latch 3 Is said receiving part 8 It is more preferable to retain its closing state engaged before disengagement of the secondary latch 45 to.

　なお、前記仮受け部と前記受け部とは、本体側開口部の対応部に対して独立して設ける構成に限られず、例えば、本体側開口部に設けられて扉を回動したり移動するためのガイドレールの凹溝やガイド用凹溝を利用する構成でもよい。また、ラッチと補助ラッチとは、通常、扉開閉方向の形状として逆形状に形成される。好ましくは、後述の形態例により例示されるように、ラッチは前側（扉開方向にある側）が係止用の略垂直面で後側（扉閉方向にある側）が解除用傾斜面である。逆に、補助ラッチは、前側が解除用傾斜面で後側が係止用の略垂直面である。 The provisional receiving portion and the receiving portion are not limited to the configuration provided independently with respect to the corresponding portion of the main body side opening, for example, provided in the main body side opening to rotate or move the door. For this reason, the guide rail may be provided with a groove or a guide groove. In addition, the latch and the auxiliary latch are usually formed in a reverse shape as a shape in the door opening / closing direction. Preferably, as exemplified by the following embodiments, the latch has a substantially vertical surface for locking on the front side (side in the door opening direction) and a release inclined surface on the rear side (side in the door closing direction). is there. Conversely, the auxiliary latch has a release inclined surface on the front side and a substantially vertical surface for locking on the rear side.

　また、本発明のロック装置において、前記カム機構は、前記規制板３に設けられたカム溝３９及び前記ケース１に設けられて前記カム溝をトレースするピンＰからなり、前記扉９Ｂが閉扉状態から更に閉方向へ押され、押し力が解放されて開方向へ動いたときに、前記規制板３５の摺動を規制した状態で前記ラッチ２を付勢力に抗して転倒可能にすることがより好ましい。 In the locking device of the present invention, the cam mechanism includes a cam groove 39 provided in the restriction plate 3 and a pin P provided in the case 1 and tracing the cam groove, and the door 9B is in a closed state. The latch 2 is allowed to fall against the urging force in a state where the sliding of the regulating plate 35 is regulated when the pushing force is further released from the closing direction and the pushing force is released to move in the opening direction. More preferred.

　また、本発明のロック装置において、前記押し込み防止手段は、前記第２ホルダー４が前記シーソレバー２８を介して上昇された後、制動されながら下降されるようにするダンパー手段５３を有していることがより好ましい。 Further, in the locking device of the present invention, the push-in preventing means includes a damper means 53 that causes the second holder 4 to be lowered while being braked after being lifted through the seesaw lever 28. Is more preferable.

　また、本発明のロック装置は、前記扉９Ｂに固定されて前記ケース１を転倒可能に枢支する取付ベース６と、前記ケース１を前記取付ベース６の正規位置に付勢している付勢手段Ｓ６とを有し、前記ラッチ３が前記受け部８ｄと係合した状態で、前記ケース１が所定レベルよりも大きな振動を受けると転倒して前記係合を解除可能となることがより好ましい。 The locking device according to the present invention includes a mounting base 6 fixed to the door 9B and pivotally supporting the case 1 so that the case 1 can be overturned, and a biasing force that biases the case 1 to a normal position of the mounting base 6. It is more preferable that when the case 1 receives vibration greater than a predetermined level in a state where the latch 3 is engaged with the receiving portion 8d, the case 3 is overturned and can be released from the engagement. .

　また、本発明は、以上のいずれかの特徴を有するロック装置を備えた扉を提供する。この場合、扉構造としては、後述の各形態により例示されるように、扉がガイドレールに沿って折り畳み展開しつつ移動可能な中折れ式の扉構造であることがより好ましい。 The present invention also provides a door provided with a lock device having any of the above features. In this case, the door structure is more preferably a middle-folding door structure that can move while being folded and unfolded along the guide rails, as exemplified by each form described below.

　本発明に係るロック装置によれば、閉扉状態で本体の開口部側に設けられた係止用受け部に係脱、つまり係合したり係合解除するラッチを有した高強度のロック装置構造を採用しながら、カム機構を含む簡単な構造により、扉に対する押し操作により扉を開から閉扉状態に切り換えたり、次の押し操作により係合解除して開扉状態に切り換えるため、操作性を良好にでき、しかも従来の取っ手を不要にして外観性も向上できる。 According to the lock device of the present invention, a high-strength lock device structure having a latch that engages and disengages, that is, engages and disengages, with the latch receiving portion provided on the opening side of the main body in the closed state. With a simple structure including a cam mechanism, the door can be switched from open to closed by pushing the door, or the door can be opened and released by the next push to switch to the open state. In addition, the appearance can be improved without the need for a conventional handle.

　また、本発明のロック装置は、上記押し込み防止手段を有することにより、当該押し込み防止手段により補助ラッチがラッチに先行して仮受け部に係合した状態で、ラッチが受け部に係合（つまり本止め）するため、扉を閉じる際の押し操作時の急激な押圧動作によってもラッチによる本止めが確実に行われるようになり、それによって誤作動を未然に防止できる。 In addition, the locking device of the present invention includes the push-in preventing unit, so that the latch is engaged with the receiving unit (that is, the auxiliary latch is engaged with the temporary receiving unit prior to the latch by the push-in preventing unit). Therefore, even if the pressing operation is performed when the door is closed, the latch is surely fixed, thereby preventing malfunction.

　また、本発明のロック装置は、カム機構が規制板側のカム溝及びケース側のピンからなり、閉扉状態から扉を開に切り換える操作に連動して規制板の摺動を規制制御してラッチを付勢力に抗して転倒可能にすることにより、受け部に対するラッチの係脱構造を簡易化できる。 In the locking device of the present invention, the cam mechanism is composed of a cam groove on the restriction plate side and a pin on the case side, and the sliding of the restriction plate is controlled and latched in conjunction with the operation of switching the door from the closed state to the open state. By making it possible to overturn against the urging force, the latch engagement / disengagement structure with respect to the receiving portion can be simplified.

　また、本発明のロック装置は、前記第２ホルダーが前記シーソレバーを介して上昇された後、制動されながら下降されるようにするダンパー手段を前記押し込み防止手段に設けることにより、当該ダンパー手段が第２ホルダーの下降、つまり仮受け部に対する補助ラッチの係合状態から係合解除されるまでの時間を遅らせ、その遅延時間に比例して受け部に対するラッチの係合をより確実に行えるようにする。 In the locking device of the present invention, the pushing means may be provided with damper means for causing the second holder to be lowered while being braked after being lifted through the seesaw lever. (2) The time until the holder is lowered, that is, until the auxiliary latch is disengaged from the temporary receiving portion is delayed, and the latch is more reliably engaged with the receiving portion in proportion to the delay time. .

　また、本発明のロック装置は、上記取付ベースおよび上記付勢部材を有することにより、例えば、子供が扉で開閉される本体側開口部の内側（収納室等）に閉じこめられた場合等の非常時において、扉の背面から扉を叩く等して所定レベルよりも大きな振動を加えるだけで、ロック装置が付勢力に抗して強制的に転倒しながら係合解除するため、異常事態（人が扉の背面側空間に閉じ込められたとき等）が発生したときに無理開きができるので、信頼性及び安全性が向上する。　 In addition, the locking device of the present invention has the mounting base and the biasing member, so that, for example, when the child is confined inside the body-side opening (such as a storage chamber) that is opened and closed by the door, At that time, the locking device is forced to overturn against the urging force and disengagement by simply striking the door from the back of the door and applying a vibration greater than a predetermined level. For example, when it is confined in the space behind the door, the door can be forcibly opened, improving reliability and safety. *

　また、本発明のロック装置を備えた扉は、当該ロック装置による上記作用効果を奏する。また、扉の他端の移動を案内するガイド用凹溝、或いはガイドレールを有し、当該ガイドレールの凹溝に沿って折り畳み展開しつつ移動可能な中折れ式の扉であれば、本発明のロック装置を備えることにより、係止用受け部として前記凹溝を利用できる。 Moreover, the door provided with the lock device of the present invention exhibits the above-described effects by the lock device. In addition, if the door is a half-folding type door that has a guide groove or guide rail for guiding the movement of the other end of the door and can be folded and unfolded along the groove of the guide rail, the present invention By providing this locking device, the concave groove can be used as a receiving portion for locking.

本発明を適用したロック装置を備えた中折れ式の扉を示し、（ａ）は扉の意匠面側から見た概略斜視図、（ｂ）は背面側から見た概略斜視図である。The folding door provided with the locking device to which this invention is applied is shown, (a) is a schematic perspective view seen from the design surface side of the door, (b) is a schematic perspective view seen from the back side. 上記蝶番の一部を破断して示す概略斜視図である。It is a schematic perspective view which fractures | ruptures and shows a part of said hinge. 上記ロック装置の全体構成を示す概略分解斜視図である。It is a schematic exploded perspective view which shows the whole structure of the said locking device. 上記ロック装置の主要部を拡大して示す分解斜視図である。It is a disassembled perspective view which expands and shows the principal part of the said locking device. 上記ロック装置の扉側への取付構造及び蝶番との関係を示す説明図である。It is explanatory drawing which shows the attachment structure to the door side of the said locking device, and the relationship with a hinge. （ａ）～（ｃ）は、扉を開から閉方向へ押している状態におけるロック装置の要部、押し込み防止手段、それら両者の関係を示す模式作動図である。(A)-(c) is a typical operation | movement figure which shows the principal part of a locking device in the state which has pushed the door from the opening to the closing direction, a pushing-in prevention means, and the relationship between both. （ａ）～（ｃ）は、扉が押し込み防止手段で一時的に閉扉状態にされた状態でのロック装置の要部、押し込み防止手段、それら両者の関係を示す模式作動図である。(A)-(c) is a typical operation | movement figure which shows the principal part of a locking device in the state by which the door was temporarily closed by the push-in prevention means, the push-in prevention means, and the relationship between them. （ａ）～（ｃ）は、扉がロック装置のラッチで閉扉状態にされたときのロック装置の要部、押し込み防止手段、それら両者の関係を示す模式作動図である。(A)-(c) is a typical operation | movement figure which shows the principal part of a locking device when a door is made into a closed state by the latch of a locking device, a pushing-in prevention means, and the relationship between them. （ａ）～（ｃ）は、扉が閉扉状態から開扉状態に切り換えられるときのロック装置の要部、押し込み防止手段、それら両者の関係を示す模式作動図である。(A)-(c) is a typical operation | movement figure which shows the principal part of a locking device when a door is switched from a closed state to an open state, a pushing-in prevention means, and the relationship between them. （ａ）～（ｃ）は、閉扉状態で子供等が閉じ込められた非常時における係合解除（無理抜き構造）の動作を示す部分断面図である。(A)-(c) is a fragmentary sectional view which shows the operation | movement of disengagement (reasonable structure) in the case of emergency when the child etc. were confined in the closed state.

符号の説明Explanation of symbols

　１…ケース（１０はホルダー用空間、１１は第２ホルダー用空間）
　２…ホルダー（２１はラッチ用配置部、２２は連通部）
　３…ラッチ（３０は係止用の略垂直面、３１は解除用の傾斜面、３２は軸孔）
　４…第２ホルダー（押し込み防止手段、４０は内部）
　５…ロック装置
　６…取付ベース
　７…蝶番（４９は付勢ばね）
　８…框（８ａは縦材、８ｂは横材、８ｄは受け部又は凹溝、（８ｄ）は仮受け部）
　９Ａ，９Ｂ…中折れ式扉（９ａは凹所）
　１７…カム溝（カム機構）
　２８…シーソレバー（２９は軸孔）
　４５…補助ラッチ（押し込み防止手段、４６は略垂直面、４７は傾斜面）
　５１…トレース用ピン（カム機構、５２板ばね）
　Ｓ１～Ｓ６…ばね部材（付勢手段） 1 ... Case (10 is a holder space, 11 is a second holder space)
2 ... Holder (21 is a latch arrangement part, 22 is a communication part)
3 ... Latch (30 is a substantially vertical surface for locking, 31 is an inclined surface for releasing, 32 is a shaft hole)
4. Second holder (push-in prevention means, 40 is inside)
5 ... Locking device 6 ... Mounting base 7 ... Hinge (49 is a biasing spring)
8 ... 框 (8a is a vertical member, 8b is a cross member, 8d is a receiving part or a concave groove, (8d) is a temporary receiving part)
9A, 9B ... Folding type door (9a is a recess)
17 ... Cam groove (cam mechanism)
28 ... Seesaw lever (29 is a shaft hole)
45 ... Auxiliary latch (pushing prevention means, 46 is a substantially vertical surface, 47 is an inclined surface)
51 ... Trace pin (cam mechanism, 52 leaf spring)
S1 to S6 ... Spring members (biasing means)

　以下、本発明を適用した形態例を図１～図１０を参照して説明する。この説明では、本体側開口部と扉の構成、蝶番の構成、ロック装置の構成、カム機構と関連部材の作動、ロック装置の主作動、無理抜き構造の順に詳述する。 Hereinafter, exemplary embodiments to which the present invention is applied will be described with reference to FIGS. In this description, the structure of the main body side opening and the door, the structure of the hinge, the structure of the locking device, the operation of the cam mechanism and related members, the main operation of the locking device, and the forced removal structure will be described in detail in this order.

（本体側開口部と扉の構成）
　形態例のロック装置５は、図１に例示したごとく本体側開口部に対し一端側を支点として回動されることで本体側開口部を塞ぐ閉扉状態と開放する開扉状態とに切り換えられる扉９Ｂ又は扉９Ａに用いられる。図１はその一例として、本体８の開口部が左右の縦材８ａ及び上下の横材８ｂで区画形成されている。この開口部は、例えば、居室や廊下などの共有空間と、ウオークインクローゼットや物入れ等の閉空間とを、中折れ式扉９Ａ，９Ｂを介して開閉ないしは連通する箇所である。上側の横材８ｂ或いは上下の横材８ｂの内面には、ガイド用凹溝８ｄが長手方向に沿って形成されている。この凹溝８ｄは、本発明の受け部として、更に後述する仮受け部として利用される。そこで、以下の説明において、凹溝８ｄは受け部８ｄと表記したり、仮受け部（８ｄ）と表記する。勿論、受け部８ｄや仮受け部（８ｄ）は、本体側開口部に凹溝８ｄが無い場合は、受け部８ｄや仮受け部（８ｄ）を横材８ｂに窪みや凹状として設けることになる。 (Body side opening and door configuration)
As illustrated in FIG. 1, the locking device 5 of the embodiment is a door that is switched between a closed state that closes the main body side opening and an open door state that is opened by rotating about one end side with respect to the main body side opening. Used for 9B or door 9A. In FIG. 1, as an example, the opening of the main body 8 is partitioned by left and right vertical members 8a and upper and lower horizontal members 8b. For example, the opening is a portion that opens and closes or communicates a shared space such as a living room or a corridor and a closed space such as a walk-in closet or a storage box via the

folding doors

9A and 9B. A guide groove 8d is formed along the longitudinal direction on the inner surface of the upper cross member 8b or the upper and lower cross members 8b. The concave groove 8d is used as a receiving portion of the present invention and as a temporary receiving portion described later. Therefore, in the following description, the concave groove 8d is expressed as a receiving portion 8d or a temporary receiving portion (8d). Of course, the receiving portion 8d and the temporary receiving portion (8d) are provided with a recess or a concave shape in the cross member 8b when the main body side opening has no concave groove 8d. .

　扉９Ａ,９Ｂは、前面（意匠面）側、すなわち前記した共有空間に配される側は、図１（ａ）に示されるごとく平坦面に形成され、取っ手或いは手掛け用凹所等を一切なくした意匠形状に造形されている。これに対し、扉９Ａ,９Ｂの背面、すなわち前記した閉空間側における扉同士の対向端は、図１（ｂ）に示されるごとく複数（この例では２つ）の蝶番７によって折曲可能に連結されている。扉９Ａは、一端側が縦材８ａに接近配置されて、ガイド用凹溝８ｄの対応端側に対し不図示の枢軸等を介して回動可能に枢支されているが、凹溝８ｄに沿って不図示の枢軸等を介して移動可能かつ回動可能に枢支するようにしてもよい。これに対し、扉９Ｂは、一端側がガイド用凹溝８ｄに沿って不図示の枢軸（この枢軸はピン構成、ローラー構成の場合もある）を介して移動可能かつ回動可能に枢支されている。また、扉９Ｂには、上側の蝶番６の近傍で、扉の背面上縁には図５に示されるごとく凹所９ａが設けられていると共に、ロック装置５がその凹所９ａに配設されている。 The

doors

9A and 9B are formed on a flat surface as shown in FIG. 1 (a) on the front surface (design surface) side, that is, the side arranged in the above-mentioned common space, and there are no handles or recesses for handling. It is shaped into a designed shape. On the other hand, the rear surfaces of the

doors

9A and 9B, that is, the opposite ends of the doors on the closed space side can be bent by a plurality of hinges 7 (two in this example) as shown in FIG. It is connected. One end of the door 9A is disposed close to the vertical member 8a, and is pivotally supported via a pivot (not shown) with respect to the corresponding end of the guide groove 8d, but along the groove 8d. Further, it may be supported so as to be movable and rotatable via a pivot shaft (not shown). On the other hand, the door 9B is pivotally supported at one end side so as to be movable and turnable via a pivot (not shown) along the guide groove 8d (this pivot may be a pin configuration or a roller configuration). Yes. Further, the door 9B is provided with a recess 9a in the vicinity of the upper hinge 6 and at the upper rear edge of the door as shown in FIG. 5, and the lock device 5 is provided in the recess 9a. ing.

（蝶番の構成）
　図１（ｂ）、図２において、蝶番７は、扉９Ａと扉９Ｂとにまたがって複数のねじＢにより扉対応部に固定されると共に、各扉を常時扉開状態、つまり外側に向けて折曲するよう付勢する付勢ばね５９を有している。詳述すると、蝶番７は、図２に例示されるごとく対応する扉に取り付けられる左右の蝶番片５７，５７と、各蝶番片５７，５７を上下の連結部５７ａを介して回動自在に支持している枢軸５８と、枢軸５８の外周に配置されるコイル形の付勢ばね５９と、枢軸５８に対し付勢ばね５９を覆うようにして回動自在に枢支され、かつ付勢ばね５９の対応端５９ａ又は５９ｂを掛け止めした状態で対応する蝶番片５７に重ねられるカバー兼用のばね受け片７ａ，７ｂとからなる。そして、各蝶番片５７には、付勢ばね５９及びばね受け片７ａ，７ｂを介して、矢印で示す折り曲げる付勢力が常時加わっている。このため、この蝶番７では、ロック装置５の係合解除、つまり非ロック状態において、図１（ａ）に示されるごとく扉９Ａ，９Ｂ同士を略ヘの字形（付勢力が強い場合は略Ｖの字形）となる方向へ折り曲げて扉開状態に切り換える。このような蝶番は市販品を使用してもよい。 (Hinge structure)
In FIG. 1 (b) and FIG. 2, the hinge 7 is fixed to the door-corresponding portion by a plurality of screws B across the door 9A and the door 9B, and each door is always in the door open state, that is, facing outward. An urging spring 59 is urged so as to be bent. In detail, the hinge 7 supports the left and

right hinge pieces

57, 57 attached to the corresponding door as illustrated in FIG. 2, and the

hinge pieces

57, 57 rotatably via the upper and lower connecting portions 57a. The pivot 58, a coil-type biasing spring 59 disposed on the outer periphery of the pivot 58, and pivotally supported by the pivot 58 so as to cover the biasing spring 59, and the biasing spring 59. The

cover receiving springs

7a and 7b, which are also used as covers, are overlapped with the corresponding hinge pieces 57 in a state in which the corresponding ends 59a or 59b are latched. Each hinge piece 57 is constantly applied with a biasing force indicated by an arrow via a biasing spring 59 and

spring receiving pieces

7a and 7b. For this reason, in this hinge 7, when the locking device 5 is disengaged, that is, in the unlocked state, the

doors

9A and 9B are made to have a substantially square shape (approximately V when the biasing force is strong) as shown in FIG. Bend it in the direction of the shape and switch to the door open state. Such a hinge may use a commercial item.

（ロック装置の構成）
　このロック装置５は、扉９Ｂの凹所９ａに対し直接或いは取付ベース６を介して配設されるケース１と、ケース側空間１０に上下摺動可能に支持されるホルダー２と、ホルダー２の上側にばね部材Ｓ3の付勢力に抗して転倒可能に枢支されているラッチ３と、ホルダー２に摺動可能かつラッチ３に接離可能に配設されている規制板３５と、規制板３５及びホルダー２を介してラッチ３を受け部８ｄと係合する方向へ付勢しているばね部材Ｓ１又は／及びＳ２と、規制板３５の摺動を制御して、扉９Ｂを付勢力に抗して開から閉方向へ押し操作することによりラッチ３を規制板３５にて転倒規制した状態で受け部８ｄに係合可能にし、扉９Ｂを再度閉方向へ押し操作することにより規制板３５をラッチ３から離間して該ラッチの係合を解除可能にする動作履歴に設定されたカム機構（３９，Ｐ）とを備えている。そして、ロック装置５は、扉９Ｂが付勢ばね４９の付勢力に抗して開から閉方向へ押されると共にラッチ３がカム機構（３９，Ｐ）を介して受け部８ｄに係合されて閉扉状態に保持され、閉扉状態から更に閉方向へ押されることで係合解除されると共にラッチ３の係合解除状態をカム機構（３９，Ｐ）を介して維持し開方向へ切り換えられるようにする。なお、以上のロック装置５は、扉側への取付構造として、扉側凹所９ａにねじＢで固定される樹脂製の取付ベース６と、ばね部材Ｓ６とを備えており、後述するごとく閉じた状態（閉扉状態）の扉を背面側より簡単に開くことができる（これが無理抜き構造である）。 (Configuration of locking device)
The lock device 5 includes a case 1 disposed directly or via a mounting base 6 with respect to the recess 9a of the door 9B, a holder 2 supported by the case side space 10 so as to be slidable up and down, A latch 3 pivotally supported on the upper side so as to be able to fall against the urging force of the spring member S3, a regulation plate 35 slidable on the holder 2 and arranged so as to be able to contact and separate from the latch 3, and a regulation plate 35 and the spring member S1 and / or S2 biased in the direction of engaging with the receiving portion 8d through the holder 2 and the sliding of the regulating plate 35 are controlled, and the door 9B is biased. The latch 3 can be engaged with the receiving portion 8d in a state where the latch 3 is overturned by the restriction plate 35 by pushing the door 9B in the closing direction, and the restriction plate 35 is pushed again by pushing the door 9B in the closing direction. Can be released from the latch 3 to disengage the latch. And a cam mechanism (39, P) set in the operation history. In the locking device 5, the door 9B is pushed in the opening to closing direction against the biasing force of the biasing spring 49, and the latch 3 is engaged with the receiving portion 8d via the cam mechanism (39, P). It is held in the closed state, and is disengaged by being pushed further in the closing direction from the closed state, and the disengaged state of the latch 3 is maintained via the cam mechanism (39, P) and can be switched to the opening direction. To do. The locking device 5 includes a resin mounting base 6 fixed to the door-side recess 9a with a screw B and a spring member S6 as a door-side mounting structure, and is closed as described later. The door in a closed state (closed state) can be easily opened from the back side (this is a forced-extraction structure).

　また、以上のロック装置５は、扉９Ｂを閉じる際の押し操作時の急激な押圧動作によってもラッチ３が受け部８ｄに確実に係合するようにする押し込み防止手段を有している。すなわち、この押し込み防止手段は、ケース側空間１１に対しホルダー２と同方向に摺動可能に支持されている第２ホルダー４と、第２ホルダー４にばね部材Ｓ４を介して出没可能に支持されていると共に、本体８の開口部側で受け部８ｄの近くに設けられている仮受け部（８ｄ）に係脱される補助ラッチ４５と、ケース側下側空間１２，１３に枢支した状態で一端２８ａ側を第２ホルダー４に作動連結し、他端２８ｂ側をホルダー２に作動連結しているシーソレバー２８とからなる。そして、押し込み防止手段は、扉９Ｂが開から閉方向へ押される過程で、ホルダー２及びシーソレバー２８を介して上昇され、補助ラッチ４５がばね部材Ｓ４の付勢力により突出して仮受け部（８ｄ）と一時的に係合して、すなわち、一旦係合した後、自動で係合解除されて扉９Ｂを閉扉状態に保った後、ラッチ３が受け部８ｄに対し補助ラッチ４５の係合解除前に係合してその閉扉状態に保持する。 Further, the locking device 5 described above has a push-in preventing means that ensures that the latch 3 is engaged with the receiving portion 8d even by a sudden pressing operation during a pressing operation when closing the door 9B. In other words, the push-in preventing means is supported by the second holder 4 so as to be slidable in the same direction as the holder 2 with respect to the case side space 11, and supported by the second holder 4 so as to be able to protrude and retract. In addition, the auxiliary latch 45 that is engaged with and disengaged from the temporary receiving portion (8d) provided near the receiving portion 8d on the opening side of the main body 8 and the case-side

lower spaces

12 and 13 are pivotally supported. The seesaw lever 28 is operatively connected to the second holder 4 at one end 28a and is operatively connected to the holder 2 at the other end 28b. The push-in preventing means is raised through the holder 2 and the seesaw lever 28 in the process in which the door 9B is pushed from the opening to the closing direction, and the auxiliary latch 45 protrudes by the urging force of the spring member S4, and the temporary receiving portion (8d). Is temporarily engaged, that is, once engaged, then automatically disengaged to keep the door 9B closed, before the latch 3 is disengaged from the auxiliary latch 45 with respect to the receiving portion 8d. And is held in its closed state.

　次に細部構成を明らかにする。まず、ケース１は、概略上開口した容器状をなし、ホルダー２を配置する空間１０と、第２ホルダー４を配置する空間１１と、シーソレバー２８を配置する各空間１０，１１の下側を形成している下側空間１２，１３とからなる。空間１０と空間１１とは、上側が隔壁１４で区画されていると共に、下側つまり空間１２と空間１３とが連通されている。空間１２には、図示を省略したが、図６（ａ）から推察されるごとくホルダー用のばね部材Ｓ１及び規制板用のばね部材Ｓ２を支持するばね支持部が内側の左右略中間位置にあって前後に設けられている。符号１０ａは、空間１０の内面に設けられてホルダー２の摺動を案内する複数のガイド溝、符号１１ａ及び１１ｂは、空間１１の内面に設けられて第２ホルダー４の摺動を案内する複数のガイド溝である。符号１３ａは、後述するばね部材Ｓ５の下端側を掛け止める箇所、符号１７は、ホルダー２の上昇位置を規制する嵌合溝、符号１８は、ダンパー手段５３を取り付ける取付孔である。符号１５は、ケース１の両側壁の上外側に設けられた嵌合部である。符号１６は、ケース１の両側壁の下側に対し同軸線上に貫通された軸孔である。 Next, the detailed configuration will be clarified. First, the case 1 has a substantially open container shape, and forms a space 10 in which the holder 2 is disposed, a space 11 in which the second holder 4 is disposed, and a lower side of the

spaces

10 and 11 in which the seesaw lever 28 is disposed.

Lower spaces

12 and 13. The space 10 and the space 11 are partitioned by the partition wall 14 on the upper side, and the lower side, that is, the space 12 and the space 13 are communicated. Although not shown, the space 12 has a spring support portion for supporting the spring member S1 for the holder and the spring member S2 for the regulating plate at a substantially intermediate position on the inner side as inferred from FIG. It is provided before and after. Reference numeral 10 a is a plurality of guide grooves provided on the inner surface of the space 10 to guide the sliding of the holder 2, and

reference numerals

11 a and 11 b are a plurality of guide grooves provided on the inner surface of the space 11 to guide the sliding of the second holder 4. This is a guide groove. Reference numeral 13 a denotes a position for latching a lower end side of a spring member S <b> 5 described later, reference numeral 17 denotes a fitting groove for restricting the raised position of the holder 2, and reference numeral 18 denotes a mounting hole for attaching the damper means 53. Reference numeral 15 denotes a fitting portion provided on the upper and outer sides of both side walls of the case 1. Reference numeral 16 denotes a shaft hole that is penetrated on the coaxial line with respect to the lower side of both side walls of the case 1.

　ホルダー２は、空間１０に対応した縦長のブロック状をなし、本体２０が上側に略コ形状に一体化されたラッチ用配置部２１と、配置部２１の前下側を切り欠いて規制板３５の上端側をその配置部内に出没可能にしている連通部２２と、本体２０の後面に突設されている縦リブ２５及び左上側に突設されている抜け止め用爪２７と、本体２０の下面に突設されてばね部材Ｓ１の上側を支持する逆凹状の支持部２６とを有している。また、本体２０の前面２４には、不図示の規制板用の配置部が形成されている。符号２１ａは配置部２１の対向側面を貫通している軸孔、符号２３ａは本体２０の前側上下に設けられたガイド溝、符号２３ｂは本体２０及び配置部２１の両側に突設されている縦リブである。 The holder 2 has a vertically long block shape corresponding to the space 10, and the main body 20 is integrated in a substantially U-shape on the upper side, and the restriction plate 35 is formed by cutting out the front lower side of the arrangement portion 21. A communication portion 22 that allows the upper end side of the main body 20 to protrude into and out of the arrangement portion, a vertical rib 25 protruding from the rear surface of the main body 20, a retaining claw 27 protruding from the upper left side, It has an inverted concave support portion 26 that protrudes from the lower surface and supports the upper side of the spring member S1. In addition, on the front surface 24 of the main body 20, an arrangement portion for a restriction plate (not shown) is formed. Reference numeral 21 a denotes a shaft hole penetrating the opposing side surface of the arrangement part 21, reference numeral 23 a denotes a guide groove provided on the upper and lower sides of the front side of the main body 20, and reference numeral 23 b denotes a vertical projection protruding on both sides of the main body 20 and the arrangement part 21. It is a rib.

　ラッチ３は、前側（扉開方向に配置される側）が係止用の略垂直面３０、後側（扉閉方向に配置される側）が上側を解除用の傾斜面３１に形成している。また、ラッチ３は、下側で左右を貫通している軸孔３２と、後側で傾斜面３１の下片側に設けられて軸孔３２に連通しているばね配置用の小空間３３と、下端側に設けられて前記した連通部２２に配置される下当接部３３ａとを有している。そして、このラッチ３は、小空間３３にばね部材Ｓ３を配置した状態で、配置部２１に対し位置決め配置された後、シャフト３４が一方軸孔２１ａ、軸孔３２、他方軸孔２１ａに挿通されて抜け止めされることにより、ばね部材Ｓ３の付勢力で起立方向に付勢され、かつばね部材Ｓ３の付勢力に抗して転倒可能に枢支される。 The latch 3 has a front side (side disposed in the door opening direction) formed as a substantially vertical surface 30 for locking, and a rear side (side disposed in the door closing direction) formed as an inclined surface 31 for release. Yes. The latch 3 includes a shaft hole 32 penetrating the left and right sides on the lower side, a small space 33 for spring arrangement provided on the lower piece side of the inclined surface 31 on the rear side and communicating with the shaft hole 32, A lower abutting portion 33a provided on the lower end side and disposed in the communication portion 22 described above. The latch 3 is positioned and arranged with respect to the arrangement portion 21 in a state where the spring member S3 is arranged in the small space 33, and then the shaft 34 is inserted into the one shaft hole 21a, the shaft hole 32, and the other shaft hole 21a. By being prevented from coming off, the spring member S3 is urged in the standing direction by the urging force of the spring member S3, and is pivotably supported against the urging force of the spring member S3.

　規制板３５は、下側に設けられてばね部材Ｓ２の上側を支持する逆凹状の支持部３６と、上側に設けられてホルダー側連通部２２に出没される突当部３７と、後面に設けられてホルダー側ガイド溝２３ａに嵌合される縦リブ３８と，前面に設けられてカム機構を構成している旋回タイプのカム溝３９（図６～図９の各（ａ）を参照）とを形成している。そして、この規制板３５は、ホルダー本体側前面２４の配置部に対し、縦リブ３８をガイド溝２３ａに嵌合した状態でガイド溝２３ａに沿って上下に摺動可能、かつラッチ３の下当接部３３ａに接離可能に支持される。なお、カム溝３９の細部は後述する。 The restricting plate 35 is provided on the lower side and is provided with an inverted concave support portion 36 that supports the upper side of the spring member S2, an abutting portion 37 that is provided on the upper side and protrudes and retracts in the holder side communication portion 22, and is provided on the rear surface. A vertical rib 38 fitted into the holder side guide groove 23a, and a swivel type cam groove 39 (see each (a) of FIGS. 6 to 9) provided on the front surface and constituting a cam mechanism; Is forming. The restricting plate 35 is slidable up and down along the guide groove 23a with the vertical rib 38 fitted to the guide groove 23a with respect to the arrangement portion of the holder main body side front surface 24, and the latch 3 The contact portion 33a is supported so as to be able to contact and separate. Details of the cam groove 39 will be described later.

　そして、上記したホルダー２は、ラッチ３及び規制板３５を支持した状態から、ケース側空間１０に対し、各縦リブ２３ｂ及び２５を対応するガイド溝１０ａに沿って嵌合しながら移動しかつ爪２７を嵌合溝１７に嵌合すると、嵌合溝１７の範囲で上下方向に摺動可能に組み込まれる。その際、ばね部材Ｓ１及びばね部材Ｓ２は、下端側が上記した空間１２に設けられた対応するばね支持部に位置規制した状態から、その上端側がホルダー側の支持部２６や規制板側の支持部３６内に入れて係止される。この組立状態において、図６のごとく、ホルダー２及びラッチ３はばね部材Ｓ１の付勢力で上昇位置に摺動されている。ラッチ３はばね部材Ｓ３の付勢力で起立方向に付勢され、かつ、ばね部材Ｓ２の付勢力で上昇されている規制板３５の突当部３７で下当接部３３ａを押し、それにより転倒不能となっている。 The holder 2 moves from the state in which the latch 3 and the restriction plate 35 are supported while the

vertical ribs

23b and 25 are fitted to the case-side space 10 along the corresponding guide grooves 10a and the claws are moved. When 27 is fitted into the fitting groove 17, the fitting groove 17 is incorporated so as to be slidable in the vertical direction. At that time, the spring member S1 and the spring member S2 are arranged such that the lower end side of the spring member S1 and the spring member S2 are restricted to the corresponding spring support portions provided in the space 12 described above, and the upper end side thereof is the support portion 26 on the holder side or the support portion on the restriction plate side. 36 and locked. In this assembled state, as shown in FIG. 6, the holder 2 and the latch 3 are slid to the raised position by the urging force of the spring member S1. The latch 3 is urged in the standing direction by the urging force of the spring member S3, and pushes the lower abutting portion 33a with the abutting portion 37 of the restricting plate 35 which is raised by the urging force of the spring member S2, thereby falling It is impossible.

　ケース１には、以上の組立状態からトレース用ピン５１が取り付けられる。ピン５１は、金属製線材を略コ形状に屈曲形成したものであり、下端５２ａがケース側の対応部に枢支され、上端５２ｂがケース側対応部に設けられた不図示の小開口からケース内に突出され、その状態でピン中間部が板ばね５２で付勢保持される。この板ばね５２は、下部５２ａがケース側対応部に設けられた係合凹部に圧着された状態で、上部５２ｂでピン対応部を付勢し、ピン５１が該付勢力に抗して下端５２ａを支点として揺動されるようにする。 The trace pin 51 is attached to the case 1 from the above assembled state. The pin 51 is formed by bending a metal wire into a substantially U shape. The lower end 52a is pivotally supported by a corresponding part on the case side, and the upper end 52b is provided from a small opening (not shown) provided in the case side corresponding part. The pin intermediate portion is biased and held by the leaf spring 52 in this state. The plate spring 52 urges the pin-corresponding portion with the upper portion 52b in a state where the lower portion 52a is crimped to the engaging recess provided in the case-side corresponding portion, and the pin 51 resists the urging force and the lower end 52a. Oscillate around the fulcrum.

　これに対し、押し込み防止手段は次のような構成である。まず、第２ホルダー４は、空間１１に対応した上開口した容器状をなし、内部４０にあって後側内面及び両側内面に設けられた縦リブ４０ａ，４０ｂと、両側外面に設けられた縦リブ４１と、片側面の下側に突設されたばね用掛け止め部４１ａと、後壁側に設けられた比較的大きな矩形窓４２と、矩形窓４２の片側の側縁に沿って設けられている歯部ないしはラック４３と、後外面に設けられた縦リブ４２ａと、前壁に設けられて補助ラッチ４５の上昇位置を規制する嵌合溝４４と、内底面に突設されている不図示のばね用支持部とを有している。 In contrast, the push-in prevention means has the following configuration. First, the second holder 4 has a container shape corresponding to the space 11 and has an upper opening. The vertical holders 40a and 40b are provided on the inner surface of the rear side and the inner surfaces of both sides, and the vertical holders are provided on the outer surfaces of both sides. A rib 41, a spring latch 41a projecting on the lower side of one side, a relatively large rectangular window 42 provided on the rear wall side, and a side edge on one side of the rectangular window 42 are provided. Teeth or rack 43, vertical ribs 42a provided on the rear outer surface, fitting grooves 44 provided on the front wall for restricting the raised position of the auxiliary latch 45, and protruding from the inner bottom surface (not shown). Spring support.

　補助ラッチ４５は、ラッチ３と前後逆の形状をなし、後側が略垂直面４６で、前側の上側を解除用傾斜面４７に形成しており、前側の垂直面となった下側４７ａに設けられて嵌合溝４４に嵌合される不図示の抜け止め用爪と、垂直面４６に設けられた上下方向に延びるガイド溝４８ａと、両側に対向して設けられたガイド溝４８ｂとを有している。そして、以上の補助ラッチ４５は、第２ホルダー４に対し、ガイド溝４８ａを縦リブ４０ａに嵌合し、両側のガイド溝４８ｂを対応する縦リブ４０ｂに嵌合しながら移動しかつ上記の前側の爪２７を嵌合溝４４に嵌合すると、嵌合溝４４の範囲で上下方向に摺動可能に組み込まれる。その際は、ばね部材Ｓ４が内部４０の内底側のばね支持部で支持した状態から、その上側を補助ラッチ４５の底面側の対応部に係止することになる。組立状態において、押し込み防止手段は、図６のごとく、補助ラッチ４５はばね部材Ｓ４の付勢力で上昇位置に摺動されている。 The auxiliary latch 45 has a shape reverse to that of the latch 3, the rear side is a substantially vertical surface 46, the front upper side is formed as a release inclined surface 47, and the auxiliary latch 45 is provided on the lower side 47 a that is the front vertical surface. A retaining claw (not shown) fitted in the fitting groove 44, a guide groove 48a provided in the vertical surface 46 extending in the vertical direction, and a guide groove 48b provided facing both sides. is doing. The auxiliary latch 45 moves with respect to the second holder 4 while the guide grooves 48a are fitted to the vertical ribs 40a and the guide grooves 48b on both sides are fitted to the corresponding vertical ribs 40b, and the front side described above. When the claw 27 is fitted into the fitting groove 44, it is incorporated so as to be slidable in the vertical direction within the range of the fitting groove 44. In that case, from the state where the spring member S4 is supported by the spring support portion on the inner bottom side of the interior 40, the upper side is locked to the corresponding portion on the bottom surface side of the auxiliary latch 45. In the assembled state, as shown in FIG. 6, in the assembled state, the auxiliary latch 45 is slid to the raised position by the urging force of the spring member S4.

　そして、以上の第２ホルダー４は、ケース側空間１１に対し両側の縦リブ４１及び後側の縦リブ４２ａを対応するガイド溝１１ａなどに嵌合し、掛け止め部４１ａをガイド溝１１ｂに嵌合すると、上下方向に摺動可能に組み込まれる。その際は、ばね部材Ｓ５が一端側を掛け止め部４１ａに係止し、他端側をケース側の係止箇所１３ａに設けられた掛け止め部に係止される。このばね部材Ｓ５は第２ホルダー４を軽度の付勢力により下降側に付勢している。但し、第２ホルダー４が重い場合は省略してもよい。また、ケース側取付孔１８にはダンパー手段５３が装着される。このダンパー手段５３は、周知のロータリー式オイルダンパー等からなり、本体５４及び作動油の抵抗を受けている出力軸に装着された回転ギア５５を有している。そして、本体５４は、取付孔１８に配置されてねじなどにより固定される。すると、回転ギア５５は、第２ホルダー側のラック４３の歯と噛み合う。 In the second holder 4 described above, the vertical ribs 41 on both sides and the vertical ribs 42a on the rear side of the case-side space 11 are fitted in the corresponding guide grooves 11a and the like, and the latching portions 41a are fitted in the guide grooves 11b. When combined, they are incorporated so as to be slidable in the vertical direction. At that time, the spring member S5 is engaged at one end side with the latching portion 41a and the other end side is latched with the latching portion provided at the locking portion 13a on the case side. The spring member S5 urges the second holder 4 downward with a slight urging force. However, when the second holder 4 is heavy, it may be omitted. A damper means 53 is mounted in the case side mounting hole 18. The damper means 53 is composed of a known rotary oil damper or the like, and has a main body 54 and a rotating gear 55 attached to an output shaft receiving resistance of hydraulic oil. And the main body 54 is arrange | positioned at the attachment hole 18, and is fixed with a screw | thread etc. As shown in FIG. Then, the rotation gear 55 meshes with the teeth of the rack 43 on the second holder side.

　また、シーソレバー２８は、下空間１２，１３内に配置されて、その枢支部２９がケース前側から後方向に配置される支軸５０を介してケース内下部に揺動可能に支持される。すなわち、シーソレバー２８は、支軸５０を基準とし、枢支部２９と一端２８ａの間の長さが、枢支部２９と他端２８ｂの間の長さに比べて長く設定されている。そして、シーソレバー２８は、図６（ｃ）に示されるごとく、一端２８ａ側が補助ホルダ４の下面に対し当接した状態で作動連結し、他端２８ｂがホルダー２の下縁側面に対し摺接した状態で作動連結している。この作動は、例えば、図６（ａ）の右側や図８のごとくラッチ３が上位置にあるときは補助ラッチ４５を第２ホルダ４と共に下降し、図７や図９のごとくラッチ３が下降すると補助ラッチ４５を第２ホルダ４と共に上昇させる。 Further, the seesaw lever 28 is disposed in the

lower spaces

12 and 13, and the pivotal support portion 29 is supported by the lower portion in the case via a support shaft 50 disposed in the rear direction from the front side of the case. That is, the seesaw lever 28 is set so that the length between the pivotal support portion 29 and the one end 28a is longer than the length between the pivotal support portion 29 and the other end 28b with the support shaft 50 as a reference. As shown in FIG. 6C, the seesaw lever 28 is operatively connected in a state where one end 28a is in contact with the lower surface of the auxiliary holder 4, and the other end 28b is in sliding contact with the lower edge side surface of the holder 2. It is connected in operation. For example, when the latch 3 is at the upper position as shown in the right side of FIG. 6A or FIG. 8, the auxiliary latch 45 is lowered together with the second holder 4, and the latch 3 is lowered as shown in FIGS. Then, the auxiliary latch 45 is raised together with the second holder 4.

（カム機構と関連部材の作動）
　次に、以上のカム溝３９の旋回溝形状、及び該カム溝３９をトレースするピン５１の軌跡とケース１内の各部材の動作との関係を説明する。図６（ａ）の右側に示した拡大図において、カム溝３９は、凸でハート形の島３９ｆの周囲に形成されており、下側から右上側へ延びている住路溝３９ａと、上側に位置して左右に別れている係止用誘導溝３９ｂ及び解除用誘導溝３９ｄと、誘導溝３９ｂ，３９ｄの間で少し下側に位置した凹状係止溝３９ｃと、誘導溝３９ｄから下側へ延びる復帰溝３９ｅなどで構成されている。 (Operation of cam mechanism and related members)
Next, the relationship between the turning groove shape of the cam groove 39 and the locus of the pin 51 that traces the cam groove 39 and the operation of each member in the case 1 will be described. In the enlarged view shown on the right side of FIG. 6A, the cam groove 39 is formed around a convex heart-shaped island 39f, and extends from the lower side to the upper right side, and the upper side of the dwelling groove 39a. The guide groove 39b for release and the guide groove 39c for release which are separated from each other right and left, the concave lock groove 39c positioned slightly below the

guide grooves

39b and 39d, and the lower side from the guide groove 39d The return groove 39e extends to

　そして、ピン５１（の他端５１ｂ）は、ラッチ３（及びホルダー２）がばね部材Ｓ１又は／及びＳ２の付勢力により上昇位置にあるときは係止溝３９ｃに係合されており、ラッチ３（及びホルダー２）がばね部材Ｓ１又は／及びＳ２の付勢力に抗して上昇位置から下降されると、係止溝３９ｃから誘導溝３９ｄに移動する。また、ピン５１は、ラッチ３（及びホルダー２）が図８のごとくばね部材Ｓ１又は／及びＳ２の付勢力で上昇して受け部８ｄに係合されると、誘導溝３９ｄから復帰溝３９ｅの下端ないしは住路溝３９ａの下端に移動する。更に、ピン５１は、ラッチ３（及びホルダー２）が図９の丸数字３のごとくばね部材Ｓ３の付勢力に抗して転倒されると、住路溝３９ａから誘導溝３９ｂに移動し、その状態からラッチ３（及びホルダー２）が図６（ａ）の右側のごとく本体側開口部を区画している横材８ｂ側に対する負荷を受けなくなると、ばね部材Ｓ１又は／及びＳ２の付勢力により上昇され、誘導溝３９ｂから再び係止溝３９ｃに移動することになる。　 The pin 51 (the other end 51b) is engaged with the locking groove 39c when the latch 3 (and the holder 2) is in the raised position by the biasing force of the spring member S1 and / or S2. When (and the holder 2) is lowered from the raised position against the biasing force of the spring member S1 and / or S2, it moves from the locking groove 39c to the guide groove 39d. Further, when the latch 3 (and the holder 2) is lifted by the urging force of the spring member S1 and / or S2 and engaged with the receiving portion 8d as shown in FIG. 8, the pin 51 moves from the guide groove 39d to the return groove 39e. It moves to the lower end or the lower end of the dwelling groove 39a. Furthermore, when the latch 3 (and the holder 2) is overturned against the urging force of the spring member S3 as indicated by the circled numeral 3 in FIG. 9, the pin 51 moves from the dwelling groove 39a to the guide groove 39b. When the latch 3 (and the holder 2) no longer receives a load on the side member 8b defining the main body side opening as shown on the right side of FIG. 6A from the state, the biasing force of the spring member S1 and / or S2 As a result, the guide groove 39b is moved again to the locking groove 39c. *

（ロック装置の主作動）
　次に、以上のロック装置５を用いたときの開扉状態（扉の開）から、閉扉状態に切り換えたり、閉扉状態から再び扉開状態に切り換えるときの作動について図６～図９を参考にして明らかにする。これらの図中、矢印は移動方向又は力の加わる方向を示している。 (Main operation of the locking device)
Next, with reference to FIGS. 6 to 9, the operation when switching from the open state (opening of the door) when using the locking device 5 to the closed state or switching from the closed state to the open state of the door again will be described. To clarify. In these drawings, arrows indicate the moving direction or the direction in which force is applied.

（１）まず、開扉状態では、図１から推察されるごとく蝶番側の付勢ばね４９の付勢力により、扉９Ａ，９Ｂ同士の対向端部は手前方向へ向けてへの字形（付勢力がより強いと更にＶの字形）に回動されている。なお、この状態で、扉９Ｂを手で矢印方向へ押圧することにより、扉９Ａ，９Ｂ同士が折り畳まれ、本体８側の開口部の幅を大きく開口することができる。この開扉状態において、ラッチ３及びホルダー２は図６（ａ）の右側のラッチ３のごとくばね部材Ｓ１又は／及びＳ２の付勢力により上方へ摺動されて上昇位置にあり、規制板３５は、ピン５１（の他端５１ｂ）が係止溝３９ｃに係合されているためばね部材Ｓ２の付勢力に抗して下降位置に維持され、ラッチ３と離間している。シーソレバー２８は、以上のラッチ３及びホルダー２の上昇位置において、他端２８ｂがホルダー２の下縁側面に軽く押された状態で最上段となり、一端２８ａ側が他端２８ｂと略水平に配置、つまり最下段で第２ホルダー４を下から受け止めて支持している。 (1) First, in the open state, as inferred from FIG. 1, the opposing end of the

doors

9A and 9B is shaped forward (biasing force) by the biasing force of the biasing spring 49 on the hinge side. If is stronger, it is further rotated into a V shape. In this state, by pressing the door 9B in the direction of the arrow by hand, the

doors

9A and 9B can be folded and the width of the opening on the main body 8 side can be increased. In this open state, the latch 3 and the holder 2 are slid upward by the biasing force of the spring member S1 and / or S2 as in the right latch 3 in FIG. Since the pin 51 (the other end 51b thereof) is engaged with the locking groove 39c, the pin 51 is maintained at the lowered position against the urging force of the spring member S2, and is separated from the latch 3. The seesaw lever 28 is in the uppermost position with the other end 28b lightly pressed against the lower edge side surface of the holder 2 at the raised position of the latch 3 and the holder 2, and the one end 28a side is arranged substantially horizontally with the other end 28b. The second holder 4 is received from below and supported at the bottom.

（２）扉９Ａ，９Ｂを開から閉扉状態にする場合は、図６（ａ）のごとく手や指で扉９Ｂ又は扉９Ａを蝶番７の付勢ばね４９の付勢力に抗して矢印で示す閉方向へ押す。この押圧過程において、ラッチ３及びホルダー２は、ラッチ側傾斜面３１が本体側横材８ｂに当たり下向きの応力を受けて下降しつつ、横材８ｂの内面に移行される。このとき、そのラッチ３及びホルダー２の下降により、ピン５１（の他端５１ｂ）は係止溝３９ｃから誘導溝３９ｄに移動する。すると、規制板３５は、ピン５１による規制が解かれてばね部材Ｓ２の付勢力によって最上段まで摺動され、上側の突当部３７を連通部２２からラッチ３の下当接部３３ａに当接してラッチ３を転倒不能とする。シーソレバー２８は、図６（ｃ）の右側のごとく他端２８ｂが下降され、逆に一端２８ａ側が枢支部２９を支点とし時計回りに回動され、それにより第２ホルダー４を上昇する。すると、上記した押し込み防止手段は、第２ホルダー４が上昇されると、補助ラッチ４５がばね部材Ｓ４を弾性縮小つまり付勢力を蓄えながら第２ホルダー４内に没入される。 (2) When the

doors

9A and 9B are opened from the open state to the closed state, as shown in FIG. 6A, the door 9B or the door 9A is resisted against the urging force of the urging spring 49 of the hinge 7 with an arrow by a hand or a finger. Push in the closing direction shown. In this pressing process, the latch 3 and the holder 2 are transferred to the inner surface of the cross member 8b while the latch side inclined surface 31 hits the main body side cross member 8b and descends due to downward stress. At this time, as the latch 3 and the holder 2 are lowered, the pin 51 (the other end 51b) moves from the locking groove 39c to the guide groove 39d. Then, the restriction plate 35 is released from the restriction by the pin 51 and is slid to the uppermost stage by the urging force of the spring member S2, and the upper abutting portion 37 is brought into contact with the lower abutting portion 33a of the latch 3 from the communication portion 22. In contact with it, the latch 3 cannot be toppled. The seesaw lever 28 is lowered at the other end 28b as shown on the right side of FIG. 6C, and conversely, the one end 28a is rotated clockwise around the pivotal support 29, thereby raising the second holder 4. Then, when the second holder 4 is raised, the above-described push-in preventing means is inserted into the second holder 4 while the auxiliary latch 45 elastically reduces the spring member S4, that is, stores an urging force.

　図７は扉９Ａ，９Ｂが閉扉状態の直前まで押された段階、又は補助ラッチ４５が仮受け部（８ｄ）に入って一時的に係合したときの状態を示している。上記した押し込み防止手段は、ラッチ３が受け部８ｄに本止めされる前段階で、補助ラッチ４５が仮受け部（８ｄ）に係合されることで閉方向への押圧力をその係合で受け止め、それにより扉９Ａ，９Ｂが閉じる際の押し操作時の急激な押圧動作によっても、オーバーストローク（扉９Ｂ又は扉９Ａが横材８ｂ側の凹溝８ｄつまり受け部８ｄを通り過ぎること）する虞を確実に防ぐ。 FIG. 7 shows a state where the

doors

9A and 9B are pushed until just before the door is closed, or a state where the auxiliary latch 45 is temporarily engaged after entering the temporary receiving portion (8d). The push-in preventing means described above is a stage before the latch 3 is finally fixed to the receiving portion 8d, and the auxiliary latch 45 is engaged with the temporary receiving portion (8d) so that the pressing force in the closing direction can be reduced by the engagement. There is a risk of overstroke (the door 9B or the door 9A passes through the concave groove 8d on the side member 8b side, that is, the receiving portion 8d) also by a sudden pressing operation at the time of the pressing operation when the

doors

9A and 9B are closed. Surely prevent.

　図８は扉９Ａ，９Ｂが図７から正規の閉扉状態に切り換えられて、ラッチ３が受け部８ｄに突出係合した本止め状態を示している。すなわち、以上のロック装置５は、ラッチ３が受け部８ｄに対向すると、ラッチ３がホルダー２と共にばね部材Ｓ１又は／及びＳ２の付勢力により上昇されて受け部８ｄに突出係合する。このとき、ラッチ３及びホルダー２が上昇すると、ピン５１（の他端５１ｂ）は誘導溝３９ｄから復帰溝３９ｅを移動して住路溝３９の入口に移動される。また、シーソレバー２８は、ラッチ３及びホルダー２の上昇に伴って他端２８ｂが上昇され、逆に一端２８ａが枢支部２９を支点とし逆時計回りに回動されて第２ホルダー４を下降する。シーソレバー２８は、図６（ｃ）の左側と同様に一端２８ａ側が他端２８ｂと略水平に配置した状態つまり最下段で第２ホルダー４を下から受け止めて支持している。この場合、第２ホルダー４は、ケース側に装着されたダンパー手段５３の回転ギア５５が第２ホルダー側のラック５３の歯と噛み合っているため自重、及びばね部材Ｓ５の付勢力に抗して緩和され速度で下降する。 FIG. 8 shows a final stop state in which the

doors

9A and 9B are switched to the normal closed state from FIG. 7 and the latch 3 protrudes and engages with the receiving portion 8d. That is, in the above locking device 5, when the latch 3 faces the receiving portion 8d, the latch 3 is raised together with the holder 2 by the urging force of the spring member S1 and / or S2, and protrudes and engages with the receiving portion 8d. At this time, when the latch 3 and the holder 2 are raised, the pin 51 (the other end 51b) moves from the guide groove 39d to the return groove 39e and is moved to the entrance of the dwelling groove 39. Also, the seesaw lever 28 is lifted at the other end 28b as the latch 3 and the holder 2 are lifted, and conversely, the one end 28a is rotated counterclockwise around the pivotal support portion 29 and the second holder 4 is lowered. As in the left side of FIG. 6C, the seesaw lever 28 supports the second holder 4 by receiving the second holder 4 from below in a state where the one end 28a side is disposed substantially horizontally with the other end 28b. In this case, the second holder 4 resists its own weight and the urging force of the spring member S5 because the rotation gear 55 of the damper means 53 mounted on the case side meshes with the teeth of the rack 53 on the second holder side. Relax and descend at a speed.

（３）扉９Ｂ，９Ａを再び開扉状態にする場合は、図９（ａ）のごとく手や指で扉９Ｂ又は扉９Ａを蝶番側付勢ばね４９の付勢力に抗して、閉方向へオーバーストロークするまで押す。この押圧過程において、図９（ａ）の丸数字１はその閉方向への押したときの状態を示し、丸数字２はその押し力を解放したときの状態を示し、丸数字３はラッチ３が付勢力に抗して転倒したときの状態を示している。 (3) When the

doors

9B and 9A are opened again, as shown in FIG. 9A, the door 9B or the door 9A is closed against the urging force of the hinge-side urging spring 49 with a hand or a finger. Press until overstroke. In this pressing process, a circled number 1 in FIG. 9A indicates a state when the pressing force is closed, a circled number 2 indicates a state when the pressing force is released, and a circled number 3 indicates a latch 3. Shows the state when falls over the biasing force.

　このうち、丸数字１において、ラッチ３及びホルダー２はラッチ側傾斜面３１が受け部８ｄを区画している逆凹状の縁部に当たって下向きの応力を受けて下降しつつ、横材８ｂの内面に移行される。このとき、そのラッチ３及びホルダー２の下降により、ピン５１（の他端５１ｂ）は住路溝３９ａから誘導溝３９ｂに移動する。また、シーソレバー２８は、ラッチ３及びホルダー２の下降に伴って他端２８ｂも下降され、逆に一端２８ａ側が枢支部２９を支点とし時計回りに回動されて第２ホルダー４を上昇させる。すると、補助ラッチ４５はばね部材Ｓ４を弾性縮小つまり付勢力を蓄えながら第２ホルダー４内に没入される。 Among them, in the circled number 1, the latch 3 and the holder 2 are lowered to the inner surface of the cross member 8b while the latch-side inclined surface 31 hits the reverse concave edge portion defining the receiving portion 8d and receives downward stress. Migrated. At this time, as the latch 3 and the holder 2 are lowered, the pin 51 (the other end 51b) moves from the dwelling groove 39a to the guide groove 39b. The seesaw lever 28 is also lowered at the other end 28b as the latch 3 and the holder 2 are lowered, and conversely, the one end 28a is rotated clockwise with the pivotal support 29 as a fulcrum to raise the second holder 4. Then, the auxiliary latch 45 is immersed in the second holder 4 while elastically reducing the spring member S4, that is, storing an urging force.

　丸数字２において、扉９Ｂ，９Ａは押し力が解放されると、付勢ばね４９の付勢力で開方向へ回動ないしは移動される。そして、ラッチ３は、逆凹状の受け部８ｄと対向すると、丸数字３のごとくばね部材Ｓ１又は／及びＳ２の付勢力により再び上昇されると共に、受け部８ｄの凹状縁部から受ける反力によりシャフト３４を支点としてばね部材Ｓ３の付勢力に抗して転倒される。換言すると、ラッチ３は受け部８ｄ内に入ると、ホルダー２と共に少し上昇される。このとき、ピン５１（の他端５１ｂ）は誘導溝３９ｂから係止溝３９ｃに係合して、規制板３５がホルダー２と共に上昇されないよう規制する。そのため、規制板３５は、上側の突当部３７が連通部２２に没した状態となって、ラッチ３の下当接部３３ａから離間され、その結果、ラッチ３を転倒可能（つまりラッチ３の転倒を許容）にする。そして、ラッチ３は、扉９Ｂ，９Ａが開方向へ回動ないしは移動されて、本体側横材８ｂの内面から離れると、図６（ａ）の右側のごとくばね部材Ｓ３の付勢力で正規の垂直状態となる。以後は、扉９Ｂ，９Ａの閉方向への押圧動作毎に扉９Ｂ，９Ａの係合保持、係合解除が繰り返されることになる。 In the round numeral 2, when the pushing force is released, the

doors

9B and 9A are rotated or moved in the opening direction by the urging force of the urging spring 49. When the latch 3 faces the reverse concave receiving portion 8d, the latch 3 is lifted again by the urging force of the spring member S1 and / or S2 as indicated by the round numeral 3, and by the reaction force received from the concave edge of the receiving portion 8d. The shaft 34 is turned over against the urging force of the spring member S3 with the shaft 34 as a fulcrum. In other words, the latch 3 is slightly raised together with the holder 2 when entering the receiving portion 8d. At this time, the pin 51 (the other end 51b thereof) engages with the locking groove 39c from the guide groove 39b to restrict the restriction plate 35 from being lifted together with the holder 2. Therefore, the restricting plate 35 is separated from the lower contact portion 33a of the latch 3 with the upper abutting portion 37 submerged in the communication portion 22, and as a result, the latch 3 can be overturned (that is, the latch 3 of the latch 3). Allow toppling over). When the

doors

9B and 9A are rotated or moved in the opening direction so as to be separated from the inner surface of the main body side cross member 8b, the latch 3 becomes normal with the urging force of the spring member S3 as shown on the right side of FIG. It becomes a vertical state. Thereafter, each time the

doors

9B and 9A are pressed in the closing direction, the

doors

9B and 9A are repeatedly held and released.

（無理抜き構造）
　以上のロック装置５は、幼児や子供等が扉９Ｂ，９Ａの背面側閉空間（収納室等）に閉じ込められた場合の対策として簡単に係合解除可能となっている。次に、その無理抜き構造を図３と図５及び図１０により詳述する。 (Unreasonable structure)
The above locking device 5 can be easily disengaged as a countermeasure when an infant, a child, or the like is confined in the back side closed space (such as a storage room) of the

doors

9B, 9A. Next, the unreasonable structure will be described in detail with reference to FIG. 3, FIG. 5 and FIG.

　上記した取付ベース６は、プレス品ないしは樹脂成形品からなり、概略扉側凹所９ａに対応した形状となっていて、両側に設けられてねじＢを通す孔６ｅを形成しているフランジ部６ａと、両フランジ部６ａの間にあって下側に設けられた下壁６ｂと、両側壁の下奥側に同軸線上に貫通されている軸孔６ｃと、両側壁の上部側にそれぞれ内側に向けて突設されている弾性係止爪６ｄとを有している。 The mounting base 6 described above is made of a pressed product or a resin molded product, has a shape corresponding to the door-side recess 9a, and is provided on both sides of the flange portion 6a forming a hole 6e through which the screw B is passed. And a lower wall 6b provided between the flange portions 6a on the lower side, a shaft hole 6c penetrating on the coaxial line on the lower back side of the both side walls, and inward on the upper side of the both side walls. It has a protruding elastic locking claw 6d.

　そして、以上のロック装置５は、両側の軸孔１６と各軸孔６ｃとが一致するようにして取付ベース６に配置され、ヒンジピン５６が一方軸孔６ｃ、一方軸孔１６、他方軸孔１６、他方軸孔６ｃに挿通されると共にヒンジピン先端の周回溝５６ａに止め輪Ｅを掛止めて抜け止めされることで、取付ベース６の内側に転倒可能に枢支される。その際には、ヒンジピン５０の外周に巻きばね等のばね部材Ｓ６が支持され、ばね部材Ｓ６の一端がケース側の対応壁部に係止され、他端が付勢力を発現しながら傾斜壁６ｂに係止される。このため、ロック装置５は、取付ベース６に対しヒンジピン５６を介して枢支された状態で、図１０（ａ）に示されるごとくばね部材Ｓ６の付勢力及び取付ベース側弾性係止爪６ｄとケース側嵌合部１５との弾性係合により起立した正規位置に保持される。すなわち、図１０（ａ）はロック装置５が正規位置で、かつ、扉９Ｂ，９Ａがラッチ３が受け部８ｄに係合されて閉扉状態に保持されている。右側が扉９Ｂの意匠面、左側が扉９Ｂの背面側で物入れ等の閉空間になっているものとする。 The above locking device 5 is arranged on the mounting base 6 so that the shaft holes 16 on both sides coincide with the shaft holes 6c, and the hinge pins 56 are one shaft hole 6c, one shaft hole 16, and the other shaft hole 16. Further, it is inserted into the other shaft hole 6 c and is pivotally supported on the inner side of the mounting base 6 by being hooked to the circumferential groove 56 a at the tip of the hinge pin to be prevented from coming off. At that time, a spring member S6 such as a winding spring is supported on the outer periphery of the hinge pin 50, one end of the spring member S6 is locked to the corresponding wall portion on the case side, and the other end develops an urging force and the inclined wall 6b. It is locked to. For this reason, the lock device 5 is pivotally supported with respect to the mounting base 6 via the hinge pin 56, and the urging force of the spring member S6 and the mounting base side elastic locking claw 6d as shown in FIG. It is held in a normal position raised by elastic engagement with the case side fitting portion 15. That is, in FIG. 10A, the lock device 5 is in the normal position, and the

doors

9B and 9A are held in the closed state with the latch 3 engaged with the receiving portion 8d. It is assumed that the right side is a design surface of the door 9B and the left side is a closed space such as a container on the back side of the door 9B.

　そして、図８（ａ）の状態において、例えば、子供が前記閉空間に閉じ込められた場合、扉９Ｂ，９Ａの意匠面及び背面ともに取っ手や手掛け用凹所がないため、その子供はロック装置５の係合を解除したくとも扉９Ｂ，９Ａを自力で閉空間側へ引っ張ることができず危機的な状態となる。しかし、この構造では、子供が前記閉空間側から扉９Ｂ又は扉９Ａを押したり、あるいは叩くだけでロック装置５が自動的に係合解除し、かつ扉９Ｂ，９Ａが自動的に開扉状態に切り換えられる。 In the state of FIG. 8A, for example, when a child is confined in the closed space, the

door

9B, 9A has neither a handle nor a recess for the handle on both the design surface and the back surface. Even if it is desired to release the engagement, the

doors

9B and 9A cannot be pulled by themselves to the closed space side, which is in a critical state. However, in this structure, the locking device 5 is automatically disengaged when the child pushes or knocks the

door

9B or 9A from the closed space side, and the

doors

9B and 9A are automatically opened. Can be switched to.

　換言すると、この構造では、振動や荷重が扉９Ｂ，９Ａに加わると、ロック装置５がヒンジピン５６を支点として、ばね部材Ｓ６の付勢力及び係止爪６ｄと嵌合部１５との弾性係合に抗して図８（ｂ）のごとく転倒され、この転倒によりラッチ３が受け部８ｄから外れて係合解除される。また、ロック装置５は、係合解除した後、図８（ｃ）のごとく扉９Ｂ，９Ａが付勢ばね４９の付勢力により開方向へ切り換えられると同時にばね部材Ｓ６の付勢力により矢印方向へ回動されて元の正規位置に復帰されることになる。 In other words, in this structure, when vibration or a load is applied to the

doors

9B and 9A, the locking device 5 uses the hinge pin 56 as a fulcrum, and the elastic engagement between the urging force of the spring member S6 and the engaging claw 6d and the fitting portion 15. Against this, it is overturned as shown in FIG. 8B, and by this overturn, the latch 3 is disengaged from the receiving portion 8d and is disengaged. In addition, after the lock device 5 is disengaged, the

doors

9B and 9A are switched to the opening direction by the biasing force of the biasing spring 49 as shown in FIG. 8C, and at the same time the arrow 9 by the biasing force of the spring member S6. It is rotated and returned to the original normal position.

　なお、以上の形態例では扉として中折れ式扉を挙げたが、本発明のロック装置は開方向へ付勢される回動タイプ（一端を支点として回動される構成、一端の枢軸や枢支部を移動しながら回動される構成を含む）の扉であれば、一枚物の扉、あるいは３枚以上連結した折り戸式扉にも適用可能である。また、本発明のロック装置は、扉に対し上側ではなく下側に配設してもよい。 In the above embodiment, a folding door is used as the door. However, the locking device of the present invention is a rotation type that is urged in the opening direction (a structure that is rotated with one end as a fulcrum, a pivot or pivot at one end). (Including a structure that is rotated while moving the support portion), the door can be applied to a single door or a folding door that connects three or more doors. Moreover, you may arrange | position the locking device of this invention not on the upper side but on the lower side with respect to the door.

　本出願は、２００９年２月２日出願の日本特許出願（特願２００９－２１３２６）に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on a Japanese patent application (Japanese Patent Application No. 2009-21326) filed on Feb. 2, 2009, the contents of which are incorporated herein by reference.

Claims

　本体側開口部に対し一端側を支点として回動されて前記開口部を塞ぐ閉扉状態と開放する開扉状態とに切り換えられ、かつ常時開方向へ付勢されている扉に用いられて、閉扉状態で前記開口部側の係止用受け部に係脱するラッチを有したロック装置において、
　前記扉に配設されてホルダーを摺動可能に支持しているケースと、
　前記ホルダーの上側に付勢力に抗して転倒可能に枢支されている前記ラッチと、
　前記ホルダーに摺動可能かつ前記ラッチに接離可能に配設されている規制板と、
　前記規制板及びホルダーを介して前記ラッチを前記受け部と係合する方向へ付勢している付勢手段と、
　前記規制板の摺動を制御して、前記扉を付勢力に抗して開から閉方向へ押すことにより前記ラッチを前記規制板にて転倒規制した状態で前記受け部に係合可能にし、前記扉を再度閉方向へ押すことにより前記規制板を前記ラッチから離間して該ラッチの係合を解除可能にする動作履歴に設定されたカム機構と、を備えていることを特徴とするロック装置。 The door is used as a door that is rotated with one end side as a fulcrum with respect to the opening on the main body side to switch between a closed state that closes the opening and an open state that opens, and is always urged in the opening direction. In the locking device having a latch that engages and disengages with the locking receiving portion on the opening side in the state,
A case disposed on the door and slidably supporting the holder;
The latch pivotally supported on the upper side of the holder so as to be able to fall against an urging force;
A regulating plate arranged to be slidable to the holder and to be able to contact and separate from the latch;
An urging means for urging the latch in a direction to engage the receiving portion via the regulating plate and the holder;
By controlling the sliding of the restricting plate, the latch can be engaged with the receiving portion in a state where the latch is prevented from falling by the restricting plate by pushing the door in a closing direction against the biasing force, And a cam mechanism set in an operation history that enables the engagement of the latch by separating the regulating plate from the latch by pushing the door in the closing direction again. apparatus.
　前記ケースに対し前記ホルダーと同方向に摺動可能に支持されている第２ホルダーと、前記第２ホルダーにばね部材を介して出没可能に支持されていると共に、前記開口部側で前記受け部に並設されている仮受け部に係脱される補助ラッチと、前記ケース側に枢支した状態で一端側を前記第２ホルダーに連結し、他端側を前記ホルダーに連結しているシーソレバーと、からなる押し込み防止手段を有し、
　前記扉が開から閉方向へ押される過程で、前記第２ホルダーが前記ホルダー及びシーソレバーを介して上昇され、前記補助ラッチが付勢力により突出し前記仮受け部と一時的に係合して前記扉を閉扉状態に保った後、前記ラッチが前記受け部に対し前記補助ラッチの係合解除前に係合してその閉扉状態に保持することを特徴とする請求項１に記載のロック装置。 A second holder supported to be slidable in the same direction as the holder with respect to the case; and supported by the second holder via a spring member so as to be able to protrude and retract, and the receiving portion on the opening side. An auxiliary latch that is engaged with and disengaged from the temporary receiving portion provided in parallel with the case, and a seesaw lever having one end connected to the second holder and the other end connected to the holder while being pivotally supported on the case side And having a push-in preventing means consisting of:
In the process in which the door is pushed from the opening to the closing direction, the second holder is lifted through the holder and a seesaw lever, and the auxiliary latch protrudes by an urging force and temporarily engages with the temporary receiving portion. 2. The locking device according to claim 1, wherein the latch is engaged with the receiving portion before the auxiliary latch is disengaged and held in the closed state after the door is kept closed.
　前記カム機構は、前記規制板に設けられたカム溝及び前記ケースに設けられて前記カム溝をトレースするピンからなり、
　前記扉が閉扉状態から更に閉方向へ押され、押し力が解放されて開方向へ動いたときに、前記規制板の摺動を規制した状態で前記ラッチを付勢力に抗して転倒可能にすることを特徴とする請求項１又は２に記載のロック装置。 The cam mechanism includes a cam groove provided in the restriction plate and a pin provided in the case to trace the cam groove,
When the door is further pushed in the closing direction from the closed state and the pushing force is released and moved in the opening direction, the latch can be turned over against the biasing force in a state where the sliding of the restriction plate is restricted. The locking device according to claim 1, wherein:
　前記押し込み防止手段は、前記第２ホルダーが前記シーソレバーを介して上昇された後、制動されながら下降されるようにするダンパー手段を有していることを特徴とする請求項２又は３に記載のロック装置。 The said pushing-in prevention means has a damper means which makes it descend | fall while being braked, after the said 2nd holder is raised via the seesaw lever. Locking device.
　前記扉に固定されて前記ケースを転倒可能に枢支する取付ベースと、前記ケースを前記取付ベースの正規位置に付勢している付勢手段と、を有し、
　前記ラッチが前記受け部と係合した状態で、前記ケースが所定レベルよりも大きな振動を受けると転倒して前記係合を解除可能となることを特徴とする請求項１から４の何れかに記載の扉のロック装置。 A mounting base that is fixed to the door and pivotally supports the case so that it can be overturned; and a biasing means that biases the case to a normal position of the mounting base,
5. The device according to claim 1, wherein when the case receives a vibration greater than a predetermined level in a state where the latch is engaged with the receiving portion, the case can be overturned to release the engagement. The door locking device described.
　請求項１から５の何れかに記載のロック装置を備えていることを特徴とする扉。 A door comprising the lock device according to any one of claims 1 to 5.