JP4856491B2

JP4856491B2 - Door opener

Info

Publication number: JP4856491B2
Application number: JP2006212201A
Authority: JP
Inventors: 薫延原
Original assignee: 佐伯金属株式会社
Priority date: 2006-08-03
Filing date: 2006-08-03
Publication date: 2012-01-18
Anticipated expiration: 2026-08-03
Also published as: JP2008038406A

Description

本発明は、冷蔵庫のドア等への使用が好適なドア開閉装置に関するものである。 The present invention relates to a door opening / closing device suitable for use in a refrigerator door or the like.

大型の冷蔵庫には、ドア側に設けられたスライド可能なラッチ部材の端部に設けた掛止片をハンドル操作により出入れして、固定枠体側に設けられた掛止部材に対して係止または解除するための掛止装置に加えて、係止操作用のハンドルを動かないようにロックすることによって閉止されたドアが開かないようにするロック装置が付加されているドア開閉装置が設けられる。特に業務用の大型の冷蔵庫においては、人が無断で庫内に入り込むと危険であるため、および庫内の冷蔵品の盗難を防止するため、ロック装置が付設されているのが一般的である。 In a large refrigerator, a latching piece provided at the end of a slidable latch member provided on the door side is put in and out by a handle operation and is locked to a latching member provided on the fixed frame side. Alternatively, in addition to a latching device for releasing, a door opening / closing device is provided to which a locking device is added to prevent the closed door from being opened by locking the handle for locking operation so as not to move. . Especially in large refrigerators for business use, it is generally dangerous that people enter the cabinet without permission, and in order to prevent the refrigerated goods in the cabinet from being stolen, a lock device is generally attached. .

かかるロック装置として、ドアが閉じられた状態でキーをキー孔に差し込み、キー操作を行うことでハンドルが動かないロック状態にする一方、キーを逆操作することによって上記ロック状態を解除するように機能する構成のものが知られている（例えば特許文献１参照）。
特開２００１−４９９１４号公報 As such a locking device, the key is inserted into the key hole with the door closed, and the key is operated so that the handle does not move, while the key is reversely operated to release the locked state. The thing of the structure which functions is known (for example, refer patent document 1).
JP 2001-49914 A

ところで、上記のようなロック装置による場合には、ロック状態になっているとハンドル操作ができないものの、掛止装置のラッチ部材を外部から無理矢理にスライドさせることで、掛止片を突出状態から没入状態にして掛止片の係止を解いてドアを開状態にし、これによりロック装置が有効に機能しないという虞がある。 By the way, in the case of the locking device as described above, the handle cannot be operated when the locking device is in the locked state, but the latching piece is sunk from the protruding state by forcibly sliding the latch member of the locking device from the outside. In this state, the latching piece is unlocked to open the door, which may cause the lock device to not function effectively.

本発明は、上記のような問題点を解決するためになされたものであり、係止状態の掛止片を外部からでは内側に入るようにスライドさせ得ず、確実に係止状態を確保することができるドア開閉装置を提供することを目的とする。 The present invention has been made to solve the above-described problems, and the latching piece in the latched state cannot be slid so as to enter the inside from the outside, and the latched state is reliably ensured. It is an object of the present invention to provide a door opening and closing device that can be used.

本発明の請求項１に記載のドア開閉装置は、ドアに固定されるケーシングと、端部に設けた掛止片を外方へ突出し得るよう上記ケーシングにスライド可能に設けられたラッチ部材と、上記ケーシングに、上記ラッチ部材をスライドさせて上記掛止片の出入れ操作を行うように設けられたハンドルと、上記ハンドル操作をロックする状態とロック解除する状態とのいずれかに外側から操作されるロック手段と、上記ロック手段の操作により、上記掛止片の外方へ突出した状態を保持すべくラッチ部材の入りスライドを防止する第１状態とラッチ部材の出入りスライドを許容する第２状態とに可変されるスライド防止・許容手段と、前記スライド防止・許容手段を前記第１状態から前記第２状態へ変更することと、前記ラッチ部材を入りスライドさせることを、前記ドアの内側からの操作により実行させる非常開ドア機構とを有し、上記ロック手段は、ハンドルに対し干渉してハンドル操作をロックするロック位置と、上記干渉が解除されることによりハンドル操作を可能にする解除位置との間で位置変更可能なロック部材と、そのロック部材が上記ロック位置に位置するときに上記スライド防止・許容手段を第１状態に、一方ロック部材が上記解除位置に位置するときに上記スライド防止・許容手段を第２状態に操作する操作片とを有するもので、前記スライド防止・許容手段は、前記ケーシングの内部であって前記ラッチ部材のドア内部側に設けられた係止部と、前記ケーシングに設けられ、ドア寄り側とその反対側に変位可能であって、反対側への変位に伴って上記係止部に係合して第１状態とし、上記ドア寄り側への変位に伴って上記係止部との係合を解除して第２状態とする被係止部材とを有し、前記非常開ドア機構は、上記ラッチ部材と連結されていて、前記操作片の操作により上記第１状態となっているとき、揺動することにより上記被係止部材を上記ドア寄り側へ変位させて上記第２状態にするとともに上記ラッチ部材を入りスライドさせるカムと、このカムをドア内側から揺動させる棒部材を挿入する、ドアに設けられた操作孔とを有することを特徴とする。 A door opening and closing device according to claim 1 of the present invention includes a casing fixed to the door, a latch member provided slidably on the casing so as to protrude outwardly from a latching piece provided at an end, A handle that is provided on the casing to slide the latch member to perform the operation of putting in and out the latch piece, and is operated from the outside in either a locked state or an unlocked state of the handle operation. A first state in which the latch member is prevented from entering and sliding in order to maintain the state of the latching piece protruding outwards and a second state in which the latch member is allowed to enter and exit. and changing the slide prevention and permission means variably, the slide preventing and allowing means from said first state to said second state to preparative, slide enters the latch member That to have a very open door mechanism to be executed by the operation from the inside of the door, the locking means comprises a locking position for locking the steering interfere to handle, that the interference is canceled A locking member whose position can be changed between the unlocking position enabling the handle operation, and when the locking member is located at the locking position, the slide preventing / allowing means is set to the first state, while the locking member is And an operation piece for operating the slide prevention / permission means to the second state when the slide prevention / permission means is located at the release position, the slide prevention / permission means being inside the casing and inside the door of the latch member. The locking portion provided on the casing and provided on the casing and displaceable on the side closer to the door and on the opposite side, and engages with the locking portion in accordance with the displacement to the opposite side. And a locked member that is disengaged from the locking portion in accordance with the displacement toward the door, and is in a second state. When it is connected to the latch member and is in the first state by operating the operation piece, the member to be locked is displaced toward the door side by swinging to be in the second state. It has a cam for inserting and sliding the latch member, and an operation hole provided in the door for inserting a bar member for swinging the cam from the inside of the door .

本発明の請求項２に記載のドア開閉装置は、請求項１に記載のドア開閉装置において、前記非常開ドア機構は、前記ラッチ部材とカムとに対して設けられていてカムの揺動開始からラッチ部材の入りスライドを遅延させる遅延手段を有し、上記遅延手段は、カムとラッチ部材のうちの一方に円弧状長孔が、他方にピン取付孔がそれぞれ設けられ、長孔とピン取付孔にわたってピンが挿入されていて、前記棒部材によりカムが揺動駆動されると上記長孔の分だけ遅れてラッチ部材を入りスライドさせる構成となっていることを特徴とする。 The door opening / closing device according to claim 2 of the present invention is the door opening / closing device according to claim 1 , wherein the emergency opening door mechanism is provided with respect to the latch member and the cam to start swinging of the cam. A delay means for delaying the sliding of the latch member from the cam, and the delay means is provided with an arc-shaped elongated hole on one of the cam and the latch member, and a pin mounting hole on the other, respectively. pins have been inserted over the hole, characterized in that the cam by the rod member is turned when driven swinging configured to slide enters minute delayed latch member of the long hole.

本発明の請求項３に記載のドア開閉装置は、請求項１または２に記載のドア開閉装置において、前記ラッチ部材を前記掛止片がケーシングの外方へ突出するように押圧付勢するスプリングを有することを特徴とする。 A door opening and closing device according to a third aspect of the present invention is the door opening and closing device according to the first or second aspect , wherein the latch member is pressed and urged so that the latching piece protrudes outward of the casing. It is characterized by having.

本発明の請求項１記載のドア開閉装置によれば、ロック手段を外側から操作してロック部材を解除位置に位置させると、ハンドル操作がロック解除されるとともに、操作片が
スライド防止・許容手段を、ラッチ部材の出入りスライドを許容する第２状態にする。よってハンドル操作によりラッチ部材をスライドさせて掛止片の出入れが可能となり、ドアを開閉することができる。一方、ロック手段を外側から操作してロック部材をロック位置に位置させると、ハンドル操作がロック状態にされるとともに、操作片がスライド防止・許容手段を、ラッチ部材の入りスライドを防止する第１状態にする。よって、ハンドルが操作できず、しかも掛止片が外方へ突出した係止状態に保持され、ドアを閉じた状態に保持させ得る。そして、このドアが閉じた状態において、スライド防止・許容手段が、ラッチ部材の入りスライドを防止する第１状態になっているので、係止状態の掛止片を外部からでは内側に入るようにスライドさせ得ず、確実に係止状態を確保することができる。 According to the door opening and closing apparatus of the present invention, when the lock member is operated from the outside and the lock member is positioned at the release position, the handle operation is unlocked and the operation piece is prevented from sliding / allowing. To a second state in which the sliding movement of the latch member is allowed. Therefore, the latch member can be slid by the handle operation to allow the latch piece to be taken in and out, and the door can be opened and closed. On the other hand, when the lock member is operated from the outside and the lock member is positioned at the lock position, the handle operation is locked, and the operation piece serves as a slide preventing / allowing device, and the first member prevents the latch member from entering and sliding. Put it in a state. Therefore, the handle cannot be operated, and the latching piece is held in the locked state protruding outward, and the door can be held in the closed state. When the door is closed, the slide preventing / allowing means is in the first state for preventing the latch member from entering and sliding, so that the latching piece is placed inside from the outside. It cannot be slid, and a locked state can be ensured reliably.

また、本発明のドア開閉装置にあっては、スライド防止・許容手段を第１状態から第２状態へ変更することと、ラッチ部材を入りスライドさせることを、ドアの内側から非常開ドア機構を操作することにより実行させることができる。よって、ハンドルがロック状態とされているとき、閉状態のドアの内側に人が入っていても、ドアの内側から非常開ドア機構を操作することで、スライド防止・許容手段を第１状態から第２状態へ変更し、ラッチ部材を入りスライドさせると、非常時にドアを開けることができる。 In the door opening and closing device of the present invention, the emergency opening door mechanism is changed from the inside of the door to change the slide preventing / allowing means from the first state to the second state and to enter and slide the latch member. It can be executed by operating. Therefore, when the handle is in the locked state, even if a person is inside the closed door, operating the emergency open door mechanism from the inside of the door can prevent the slide prevention / permission means from the first state. When the state is changed to the second state and the latch member is inserted and slid, the door can be opened in an emergency.

更に、本発明のドア開閉装置によれば、被係止部材がドア寄り側へ変位すると係止部との係合が解除され、スライド防止・許容手段がラッチ部材の出入りスライドを許容する第２状態になる。一方、被係止部材が反対側へ変位すると係止部に係合する状態、つまりスライド防止・許容手段がラッチ部材の入りスライドを防止する第１状態になる。そして、この第１状態において、ドアの内側から棒部材を操作孔より挿入してカムを揺動させ被係止部材をドア寄り側へ変位させることでスライド防止・許容手段を第２状態にすることができる。よって、ハンドルがロック状態とされ、かつドアが閉状態になっていても、ドアの内側からの棒部材の操作でドアを容易に開けることができる。そして、このドア開閉装置を、例えば冷蔵庫に適用することにより、従来頻発していた冷蔵庫内への閉じ込め事故を確実に防止することができる。 Furthermore, according to the door opening and closing device of the present invention, when the locked member is displaced toward the door, the engagement with the locking portion is released, and the slide preventing / allowing means allows the latch member to slide in and out. It becomes a state. On the other hand, when the member to be locked is displaced to the opposite side, a state of engaging with the locking portion, that is, a first state in which the slide preventing / allowing means prevents the latch member from entering and sliding is brought about. And in this 1st state, a rod member is inserted from the inside of a door from an operation hole, a cam is rock | fluctuated, and a to-be-latched member is displaced to a door near side, A slide prevention and permissive means is made into a 2nd state. be able to. Therefore, even when the handle is locked and the door is closed, the door can be easily opened by operating the bar member from the inside of the door. By applying this door opening / closing device to, for example, a refrigerator, it is possible to reliably prevent a confinement accident in the refrigerator that has frequently occurred in the past.

本発明の請求項２記載のドア開閉装置によれば、ドアの内側から棒部材によりカムを揺動駆動させると、遅延手段の長孔の分だけ遅れてラッチ部材が入りスライドすることになる。換言すると、カムを揺動駆動させて被係止部材を係止部に対して非係止状態とした後に、ラッチ部材を入りスライドさせることができる。よって、被係止部材と係止部との間に遊びを持たせておかなくても両者が引っ掛かること無しにラッチ部材の入りスライドが可能な状態でドアを開けることができる。なお、遅延時間は長孔の長さにより調整し得る。 According to the door opening and closing apparatus of the second aspect of the present invention, when the cam is driven to swing by the rod member from the inside of the door, the latch member enters and slides with a delay corresponding to the long hole of the delay means. In other words, the latch member can be inserted and slid after the cam is driven to swing to bring the locked member into the non-locking state with respect to the locking portion. Therefore, the door can be opened in a state in which the latch member can enter and slide without being caught even if no play is provided between the locked member and the locking portion. The delay time can be adjusted by the length of the long hole.

本発明の請求項３記載のドア開閉装置によれば、スプリングにより掛止片がケーシングの外側へ突出するようにラッチ部材を押圧付勢する構成となっていても、スライド防止・許容手段が、ラッチ部材の入りスライドを防止する第１状態になっているので、前同様に係止状態の掛止片を外部からでは内側に入るようにスライドさせ得ず、確実に係止状態を確保することができる。 According to the door opening and closing apparatus according to claim 3 of the present invention, even if the latch member is configured to press and urge the latch member so that the latching piece protrudes to the outside of the casing by the spring, the slide preventing / allowing means includes: Since it is in the first state to prevent the sliding of the latch member, the latched latch piece cannot be slid from the outside so as to enter the inside as before, and the latched state is reliably ensured. Can do.

以下に本発明を具体的に説明する。 The present invention will be specifically described below.

（第１実施形態）
図１は、本発明に係るドア開閉装置の第１実施形態を示す分解斜視図であり、図２は、図１のドア開閉装置の組み立て斜視図である。また、図３は、図２のＩＩＩ−ＩＩＩ線断面図であり、ハンドルをロックした状態を示す。図４は図３に対応する部分の断面図であり、ハンドルロックを解除した状態を示す。なお、これらの図において、Ｘ−Ｘ方向を幅方向、Ｙ−Ｙ方向を前後方向、Ｚ−Ｚ方向を上下方向といい、特に−Ｘ方向を左方、＋Ｘ方向を右方、−Ｙ方向を前方、＋Ｙ方向を後方、−Ｚ方向を下方、＋Ｚ方向を上方という。 (First embodiment)
FIG. 1 is an exploded perspective view showing a first embodiment of a door opening and closing device according to the present invention, and FIG. 2 is an assembled perspective view of the door opening and closing device of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2 and shows a state in which the handle is locked. FIG. 4 is a cross-sectional view of a portion corresponding to FIG. 3 and shows a state where the handle lock is released. In these figures, the XX direction is referred to as the width direction, the YY direction is referred to as the front-rear direction, and the ZZ direction is referred to as the up-down direction. In particular, the -X direction is the left direction, the + X direction is the right direction, and the -Y direction. Is the front, the + Y direction is the rear, the -Z direction is the lower side, and the + Z direction is the upper side.

この第１実施形態のドア開閉装置１は、冷蔵庫のドアＤ（図２）に固定されるケーシング２と、このケーシング２の内側に摺動可能に設けられたラッチ部材４と、上記ラッチ部材４にピン９０を介して連結されるカム５と、上記カム５を揺動させて上記ラッチ部材４を摺動させるハンドル６と、このハンドル６をロックする状態とロック解除状態のいずれかに外側から操作されるロック手段８とを備える。 The door opening and closing apparatus 1 according to the first embodiment includes a casing 2 fixed to a door D (FIG. 2) of a refrigerator, a latch member 4 slidably provided inside the casing 2, and the latch member 4 described above. The cam 5 connected to the pin 90 via the pin 90, the handle 6 that swings the cam 5 to slide the latch member 4, and the handle 6 is locked or unlocked from the outside. Locking means 8 to be operated.

上記ケーシング２は、ドアＤに固定するために下部の左右に設けられた取付部２１と、前方に設けられた前面壁２２と、前面壁２２の後側に幅方向で対向するように設けられた一対の側壁２３とを有する。取付部２１は幅方向両側に設けられているものの、図１および図２には右方のみ表れている。上記前面壁２２にはラッチ部材４の先端側の掛止片４１を外方（前方）に突出させるための切欠き孔２２ａが設けられ、両側壁２３の間の隙間２３ａにはハンドル６が装着される。 The casing 2 is provided so as to be opposed to the mounting portions 21 provided on the left and right sides of the lower portion for fixing to the door D, the front wall 22 provided in front, and the rear side of the front wall 22 in the width direction. And a pair of side walls 23. Although the attachment portions 21 are provided on both sides in the width direction, only the right side appears in FIGS. 1 and 2. The front wall 22 is provided with a notch 22a for projecting the latching piece 41 on the front end side of the latch member 4 outward (forward), and the handle 6 is mounted in the gap 23a between the side walls 23. Is done.

また、ケーシング２は、底部が開口していて、その底部にはドアＤとの間に挟持した状態で底蓋３が取付けられる。この底蓋３には、上方に突出した凸部３１と操作孔３２とが設けられ、凸部３１が操作孔３２よりも前側に配されている。凸部３１の前側にはコイルスプリング３３の後端に挿入する突起３１ａが形成されている。一方、凸部３１の後側には上方から見てコの字状の案内部３１ｂが形成されている。凸部３１と操作孔３２との間には後述する被係止部材７が取付けられる。 Moreover, the bottom part of the casing 2 is opened, and the bottom cover 3 is attached to the bottom part while being sandwiched between the door D and the bottom part. The bottom cover 3 is provided with a convex portion 31 and an operation hole 32 protruding upward, and the convex portion 31 is arranged on the front side of the operation hole 32. A protrusion 31 a that is inserted into the rear end of the coil spring 33 is formed on the front side of the convex portion 31. On the other hand, a U-shaped guide part 31b is formed on the rear side of the convex part 31 as viewed from above. A locked member 7 described later is attached between the convex portion 31 and the operation hole 32.

底蓋３とケーシング２との内側には、ラッチ部材４およびカム５が設けられる。ラッチ部材４の先端側には、上述した掛止片４１が設けられていて、その掛止片４１の下側には円弧状に形成された湾曲部４１ａが形成されている。ラッチ部材４の後端側には下側に切欠部４２が設けられ、その切欠部４２の下面は、切欠部４２と湾曲部４１ａとの間の平滑な下面４３に対して一定寸法だけ上方に位置する。よって、下面４３と切欠部４２との境界には係止部としての段差４４が形成されている。また、ラッチ部材４の後部には、カム５を挟むように一対の対向片４５が形成され、各対向片４５のそれぞれにはピン取付孔４５ａが設けられている。そして、これらピン取付孔４５ａに対し、カム５の下部に設けたピン取付孔５１を位置合わせし、これらピン取付孔４５ａ、５１には前記ピン９０が挿着される。これによりラッチ部材４とカム５とが連結される。 A latch member 4 and a cam 5 are provided inside the bottom lid 3 and the casing 2. The latching piece 41 described above is provided on the distal end side of the latch member 4, and a curved portion 41 a formed in an arc shape is formed below the latching piece 41. On the rear end side of the latch member 4, a notch 42 is provided on the lower side, and the lower surface of the notch 42 is above the smooth lower surface 43 between the notch 42 and the curved portion 41 a by a certain dimension. To position. Therefore, a step 44 as a locking portion is formed at the boundary between the lower surface 43 and the cutout portion 42. A pair of opposing pieces 45 are formed at the rear of the latch member 4 so as to sandwich the cam 5, and each of the opposing pieces 45 is provided with a pin mounting hole 45 a. The pin mounting holes 51 provided in the lower portion of the cam 5 are aligned with the pin mounting holes 45a, and the pins 90 are inserted into the pin mounting holes 45a and 51, respectively. Thereby, the latch member 4 and the cam 5 are connected.

一対の対向片４５の間には凸部３１が位置するようになっていて、凸部３１の前側に形成された突起３１ａに後端が挿入されたコイルスプリング３３の前端が掛止片４１の後側に当接し（図３、図４参照）、コイルスプリング３３が掛止片４１を前方に突出させる押圧付勢力をラッチ部材４に付与する。上記コイルスプリング３３としては、図示例では二重に重なったものを使用しているが、一重のものでもよい。 The convex portion 31 is positioned between the pair of opposed pieces 45, and the front end of the coil spring 33 in which the rear end is inserted into the protrusion 31 a formed on the front side of the convex portion 31 is the hooking piece 41. The coil spring 33 abuts against the rear side (see FIGS. 3 and 4), and applies a pressing biasing force to the latch member 4 to cause the latching piece 41 to protrude forward. As the coil spring 33, the double spring is used in the illustrated example, but a single spring may be used.

上記カム５は、ケーシング２の前記隙間２３ａに装着されるハンドル６の内側に上部５２を挿入した状態でケーシング２の内部に取付けられる。このことをより詳細に説明する。ハンドル６は、その長手方向のほぼ全長にわたり下面に凹部６１が形成されていて（図３および図４参照）、その凹部６１にカム５の上部５２を挿入し、ケーシング２の両側壁２３のそれぞれに設けたピン取付孔２３ｂと、ハンドル６に設けたピン取付孔６２と、カム５の上部５２に設けたピン取付孔５３との位置を合わせ、これらピン取付孔２３ｂ、６２、５３にピン９１を挿着することで、ケーシング２の内部に取付けられる。 The cam 5 is attached to the inside of the casing 2 with the upper part 52 inserted inside the handle 6 mounted in the gap 23 a of the casing 2. This will be described in more detail. The handle 6 has a recess 61 formed on the lower surface over almost the entire length in the longitudinal direction (see FIGS. 3 and 4). The upper portion 52 of the cam 5 is inserted into the recess 61, and the both side walls 23 of the casing 2 are respectively inserted. The pin mounting hole 23b provided in the handle 5, the pin mounting hole 62 provided in the handle 6, and the pin mounting hole 53 provided in the upper portion 52 of the cam 5 are aligned, and the pin 91 is inserted into the pin mounting holes 23b, 62, 53. Is attached to the inside of the casing 2.

このように取付けられるカム５とハンドル６は、図３および図４に示すようにピン９１を軸として揺動可能である。加えて、ハンドル６の内側上面６３にカム５の上面５４が接触しているので、ハンドル６の後端側に設けた把持部６４を上方に引き矢印方向にハンドル６を揺動させると、カム５も同じ角度分だけ揺動する。その後、ハンドル６の把持部６４から手を離すと、コイルスプリング３３の押圧付勢力により掛止片４１が前方に突出するようにラッチ部材４をスライドさせ、これによりカム５とハンドル６が元の状態に戻るとともに、掛止片４１が、冷蔵庫の固定枠体Ｈに設けた掛止部材Ｆに掛止めされ、ドアＤは閉とされる。 The cam 5 and the handle 6 attached in this way can swing around a pin 91 as shown in FIGS. In addition, since the upper surface 54 of the cam 5 is in contact with the inner upper surface 63 of the handle 6, if the handle 6 is pulled upward and the handle 6 is swung in the direction of the arrow, the cam 6 5 also swings by the same angle. Thereafter, when the hand is released from the grip portion 64 of the handle 6, the latch member 4 is slid by the pressing biasing force of the coil spring 33 so that the latching piece 41 protrudes forward, whereby the cam 5 and the handle 6 are moved back to their original positions. While returning to a state, the latching piece 41 is latched by the latching member F provided in the fixed frame H of the refrigerator, and the door D is closed.

一方、ハンドル６の内側上面６３に接触するカム５の上面５４がピン９１よりも前側に位置するように形成されているので、ハンドル６を一定角度に保持したままカム５のみをピン９１の回りに揺動できる。その揺動は、カム５の後端部５５を上方に押し上げることで可能となる。その押し上げは、例えばドアＤに設けた操作孔Ｇおよび底蓋３に設けた操作孔３２から棒部材１１０、例えば鉛筆やボールペンなどの硬質の棒状部材を挿入してカム５を揺動させることで可能となる。そして、カム５の揺動を受けて、ピン９０を介して連結されたラッチ部材４が前後方向にスライドする。このとき、ピン取付孔４５ａとピン取付孔５１とのうち少なくとも片方、図３ではピン取付孔４５ａの直径をピン９０の直径よりも大きく形成しておくことが好ましい。つまり、カム５の揺動によりピン取付孔５１が上下方向に変位しても、ラッチ部材４を支障なくスライドさせ得る。なお、棒部材１１０としては、鉛筆やボールペンに限らず、ドライバーの先端部分や釘などの棒状部材や、専用に作製したものでもよい。 On the other hand, since the upper surface 54 of the cam 5 that contacts the inner upper surface 63 of the handle 6 is formed to be positioned in front of the pin 91, only the cam 5 is rotated around the pin 91 while the handle 6 is held at a constant angle. Can be swung. The swinging is made possible by pushing up the rear end 55 of the cam 5 upward. The push-up is performed, for example, by inserting a rod member 110, for example, a hard rod-shaped member such as a pencil or a ballpoint pen, through the operation hole G provided in the door D and the operation hole 32 provided in the bottom cover 3, and swinging the cam 5. It becomes possible. And the latch member 4 connected via the pin 90 slides in the front-back direction in response to the swing of the cam 5. At this time, it is preferable that at least one of the pin mounting hole 45a and the pin mounting hole 51, that is, the diameter of the pin mounting hole 45a in FIG. That is, even if the pin mounting hole 51 is displaced in the vertical direction due to the swing of the cam 5, the latch member 4 can be slid without trouble. The rod member 110 is not limited to a pencil or a ballpoint pen, but may be a rod-shaped member such as a driver tip or a nail, or a dedicated member.

更に、ケーシング２の内側には、前記ロック手段８が設けられている。ロック手段８は、ケーシング２の内部に設けられた凹溝２４に前後方向へスライド可能に嵌め込まれるロック部材８１と、このロック部材８１をケーシング２の天井に取付けるねじ８２と、ロック部材８１とケーシング２の天井との間にロック部材８１のスライドを可能にするための隙間を形成するコイルばね８３と、図示しないキーにより回転操作されるシリンダ錠８４と、ロック部材８１の後側に一体に設けられた下向きに長い操作片８５とを有する。 Further, the locking means 8 is provided inside the casing 2. The lock means 8 includes a lock member 81 that is slidably fitted in a recessed groove 24 provided in the casing 2 in the front-rear direction, a screw 82 that attaches the lock member 81 to the ceiling of the casing 2, a lock member 81, and the casing. A coil spring 83 that forms a gap for allowing the locking member 81 to slide between the ceiling of the second member, a cylinder lock 84 that is rotated by a key (not shown), and a rear portion of the locking member 81. And an operation piece 85 that is long and downward.

ロック部材８１には、前側に前後方向に長い長孔８１ｂが、後側に幅方向に長い長孔８１ａが形成されている。長孔８１ｂには、下側からねじ８２がケーシング２の天井に達する状態で取付けられていて、ロック部材８１とケーシング２の天井との間には、コイルばね８３が、その内部にねじ８２を挿入した状態で設けられ、これによりロック部材８１とケーシング２の天井との間に形成される隙間によりロック部材８１のスライドを可能にしている。一方、長孔８１ａには、シリンダ錠８４の下面側に突出し図示しないキーの回転に伴って回転する凸部８４ａが挿入されていて、上記キーの回転によりロック部材８１を前後方向にスライドさせる。このロック部材８１のスライドにより操作片８５も一緒に前後方向へスライドする。 The lock member 81 has a long hole 81b long in the front-rear direction on the front side and a long hole 81a long in the width direction on the rear side. A screw 82 is attached to the long hole 81b from below so as to reach the ceiling of the casing 2, and a coil spring 83 is provided between the lock member 81 and the ceiling of the casing 2 so that the screw 82 is provided therein. It is provided in the inserted state, and this allows the lock member 81 to slide by a gap formed between the lock member 81 and the ceiling of the casing 2. On the other hand, a projection 84a that protrudes from the lower surface side of the cylinder lock 84 and rotates with the rotation of a key (not shown) is inserted into the long hole 81a, and the lock member 81 is slid in the front-rear direction by the rotation of the key. As the lock member 81 slides, the operation piece 85 also slides forward and backward together.

ロック部材８１が後端位置にあるとき（図３参照）、その後端位置は、ハンドル６の前端６５がロック部材８１に干渉してハンドル６の操作をロックするロック位置に相当する。一方、ロック部材８１が前端位置にあるとき（図４参照）、ハンドル６を操作しても、その前端６５がロック部材８１に干渉しないので、上記前端位置はハンドル６の操作を可能するロック解除位置に相当する。 When the lock member 81 is in the rear end position (see FIG. 3), the rear end position corresponds to a lock position where the front end 65 of the handle 6 interferes with the lock member 81 and locks the operation of the handle 6. On the other hand, when the lock member 81 is in the front end position (see FIG. 4), even if the handle 6 is operated, the front end 65 does not interfere with the lock member 81, so the front end position is unlocked so that the handle 6 can be operated. Corresponds to position.

なお、ハンドル６を操作しない場合は、ケーシング２の両側壁２３のそれぞれに設けたピン取付孔２３ｃと、ハンドル６に設けたピン取付孔６３とを位置合わせし、これらピン取付孔２３ｃ、６３にピン９２を挿着すればよい。 When the handle 6 is not operated, the pin mounting holes 23c provided in the both side walls 23 of the casing 2 and the pin mounting holes 63 provided in the handle 6 are aligned, and the pin mounting holes 23c and 63 are aligned with each other. What is necessary is just to insert the pin 92.

図５は上記底蓋３に前記被係止部材７を取付けた状態を示す正面図、図６はその平面図である。 FIG. 5 is a front view showing a state in which the locked member 7 is attached to the bottom lid 3, and FIG. 6 is a plan view thereof.

被係止部材７は、例えば弾性を有する金属板を加工して一体に形成されたもので、後側に固定部７１が、その前側に高さ変更部７２が形成され、高さ変更部７２の前側には被案内部７３が形成されている。高さ変更部７２は、固定部７１を水平にして底蓋３にビス７７により固定した状態で、前端部７４が上方に浮いてラッチ部材４の切欠部４２の下面に接触するか或いは前記下面４３よりも上方に位置する傾斜状態になるように設計されている。よって、この傾斜状態において、ラッチ部材４を後退、つまり入りスライドさせると、前端部７４がラッチ部材４の段差４４に引っ掛かり、入りスライドを防止する第１状態となる。このとき、段差４４に引っ掛かることにより被係止部材７に変形が生じ難くするために被案内部７３は案内部３１ｂの内側で案内されるように設計されている。 The locked member 7 is formed integrally by processing a metal plate having elasticity, for example, a fixed portion 71 is formed on the rear side, and a height changing portion 72 is formed on the front side, and the height changing portion 72 is formed. A guided portion 73 is formed on the front side. The height changing portion 72 is configured such that the front end portion 74 floats upward and comes into contact with the lower surface of the notch portion 42 of the latch member 4 in a state where the fixing portion 71 is leveled and fixed to the bottom lid 3 with screws 77. It is designed to be in an inclined state located above 43. Accordingly, in this inclined state, when the latch member 4 is retracted, that is, inserted and slid, the front end portion 74 is hooked on the step 44 of the latch member 4, and a first state is established in which the entry slide is prevented. At this time, the guided portion 73 is designed to be guided inside the guide portion 31 b in order to prevent the locked member 7 from being easily deformed by being caught by the step 44.

一方、高さ変更部７２に下向きの力を付与し、前端部７４を下面４３よりも低くすると、前端部７４が段差４４に引っ掛からず、出入りスライドを許容する第２状態となる。つまり、被係止部材７と段差（係止部）４４とは、スライド防止・許容手Ａとして機能する（図５参照）。 On the other hand, when a downward force is applied to the height changing portion 72 and the front end portion 74 is made lower than the lower surface 43, the front end portion 74 is not caught by the step 44, and a second state is allowed in which the slide in and out is allowed. That is, the to-be-latched member 7 and the level | step difference (engagement part) 44 function as the anti-slide / allowable hand A (see FIG. 5).

上記被案内部７３は、上記傾斜状態において高さ変更部７２よりも傾斜が急な傾斜角度を有する上面７３ａと、その上面７３ａの幅方向両端から下へ垂れ下がった側面７３ｂとを備える。側面７３ｂは上面７３ａの変形を防止する機能を有する。 The guided portion 73 includes an upper surface 73a having an inclination angle steeper than the height changing portion 72 in the inclined state, and side surfaces 73b that hang downward from both ends of the upper surface 73a in the width direction. The side surface 73b has a function of preventing deformation of the upper surface 73a.

上記操作片８５は、ロック部材８１がロック解除位置（前端位置）にあるとき（図４参照）、操作片８５の下部８５ａが上面７３ａを下側へ押し付ける。一方、ロック位置（後端位置）にあるとき（図３参照）、下部８５ａが上面７３ａから離れ、高さ変更部７２は上記傾斜状態になる。 When the lock member 81 is in the unlocked position (front end position) (see FIG. 4), the lower part 85a of the operation piece 85 presses the upper surface 73a downward. On the other hand, when in the locked position (rear end position) (see FIG. 3), the lower portion 85a is separated from the upper surface 73a, and the height changing portion 72 is in the inclined state.

上記高さ変更部７２に下向きの力を作用させる手段としては、本実施形態では、高さ変更部７２の中央部に上側に若干突出させて形成した突起７５と、図３に示すようにカム５の周面に突出形成され、上記突起７５を下方に押し付ける押し付け部５６とを有する第１手段と、被案内部７３を下方に押し付ける操作片８５を有する第２手段とが設けられている。なお、上記第１手段と第２手段とを作用させる時期については、以下のドアの開閉操作内容において説明する。 As means for applying a downward force to the height changing portion 72, in this embodiment, a protrusion 75 formed by slightly projecting upward at the center of the height changing portion 72 and a cam as shown in FIG. 5 and a second means having an operation piece 85 for pressing the guided portion 73 downward. The first means has a pressing portion 56 that presses the protrusion 75 downward. Note that the timing for operating the first means and the second means will be described in the following door opening / closing operations.

このように構成された本実施形態に係るドア開閉装置１がドアＤに取付けられた場合におけるドアの開閉操作内容につき説明する。 The door opening / closing operation contents when the door opening / closing apparatus 1 according to the present embodiment configured as described above is attached to the door D will be described.

図４に示すように、ロック手段８のロック部材８１をロック解除位置（前端位置）にセットすると、ハンドル６の前端６５がロック部材８１に干渉しない状態になる。これによりハンドル６は操作が可能な状態になるとともに、操作片８５が前側に位置して被案内部７３を下方に押し付ける。つまり、上記第２手段が作用する状態になる。 As shown in FIG. 4, when the lock member 81 of the lock means 8 is set at the unlock position (front end position), the front end 65 of the handle 6 is not in interference with the lock member 81. As a result, the handle 6 becomes operable, and the operation piece 85 is positioned on the front side to press the guided portion 73 downward. That is, the second means is activated.

このように被案内部７３が下方に押し付けられることにより、前端部７４が下面４３よりも低くなって、前端部７４が段差４４に引っ掛からず、被係止部材７と段差４４とを有するスライド防止・許容手段Ａは、ラッチ部材４の出入りスライドを許容する第２状態となる。この第２状態においては、ハンドル６の操作が可能であるため、ドアＤの開閉を自由に行うことができる。この開閉に際し、ドアＤを開状態から閉状態にするとき、前記湾曲部４１ａを介して掛止片４１が掛止部材Ｆにより内側に入るように押され、ハンドル６の操作を必要としない。 As the guided portion 73 is pressed downward in this manner, the front end portion 74 is lower than the lower surface 43, and the front end portion 74 is not caught by the step 44, and the slide prevention including the locked member 7 and the step 44 is achieved. The permitting means A is in the second state in which the latch member 4 is allowed to slide in and out. In the second state, since the handle 6 can be operated, the door D can be freely opened and closed. At the time of opening and closing, when the door D is changed from the open state to the closed state, the latching piece 41 is pushed inward by the latching member F via the curved portion 41a, and the operation of the handle 6 is not required.

これに対し、ロック手段８のシリンダ錠８４にキーを挿入して回し、ロック部材８１をロック位置（後端位置）にセットすると、ハンドル６の前端６５がロック部材８１に干渉する状態になる。これによりハンドル６は操作を行うことができないロック状態になる。このようなロック状態において、ドアＤを開けるとき、ドアＤに設けた操作孔Ｇおよび底蓋３に設けた操作孔３２に対し、図３に示すようにドアＤの内側から前記棒部材１１０を挿入してドアＤの外側へ向いた力Ｊを付与することによりカム５を矢印方向に揺動させ、カム５の押し付け部５６にて高さ変更部７２の突起７５を下方に押し付ける。つまり、第１手段を作用させて第２状態にする。そして、カム５の揺動に伴ってラッチ部材４が後側へ引っ張られ、つまり入りスライドし、掛止片４１が冷蔵庫の掛止部材Ｆから外れる。上記棒部材１１０、カム５の押し付け部５６および被係止部材７の突起７５は非常開ドア機構Ｂを構成する。上記押し付け部５６および突起７５は、前端部７４の上を段差４４が後側に通過するまで高さ変更部７２を下方に押し付けるように設計されている。そして、掛止片４１が冷蔵庫の掛止部材Ｆから外れるとき、前記棒部材１１０には、カム５を揺動させるための力、つまりドアＤの外側へ向いた力Ｊを付与しているので、その力ＪによりドアＤは開とされる。よって、ハンドル６がロック状態に保持されたドアの内側に人が入っていても、ドアＤの内側から前記非常開ドア機構Ｂを操作することで、スライド防止・許容手段Ａを第１状態から第２状態へ変更し、ラッチ部材４を入りスライドさせると、非常時にドアＤを開けることができる。 On the other hand, when the key is inserted into the cylinder lock 84 of the locking means 8 and turned to set the lock member 81 at the lock position (rear end position), the front end 65 of the handle 6 interferes with the lock member 81. As a result, the handle 6 is in a locked state where it cannot be operated. In such a locked state, when the door D is opened, the bar member 110 is moved from the inside of the door D to the operation hole G provided in the door D and the operation hole 32 provided in the bottom cover 3 as shown in FIG. The cam 5 is swung in the direction of the arrow by inserting and applying a force J directed to the outside of the door D, and the protrusion 75 of the height changing portion 72 is pressed downward by the pressing portion 56 of the cam 5. That is, the first means is operated to enter the second state. Then, as the cam 5 swings, the latch member 4 is pulled rearward, that is, enters and slides, and the latching piece 41 is detached from the latching member F of the refrigerator. The bar member 110, the pressing portion 56 of the cam 5, and the protrusion 75 of the locked member 7 constitute an emergency open door mechanism B. The pressing portion 56 and the protrusion 75 are designed to press the height changing portion 72 downward until the step 44 passes rearward on the front end portion 74. And when the latching piece 41 is removed from the latching member F of the refrigerator, a force for swinging the cam 5, that is, a force J directed to the outside of the door D is applied to the rod member 110. The door D is opened by the force J. Therefore, even if a person is inside the door where the handle 6 is held in the locked state, by operating the emergency opening door mechanism B from the inside of the door D, the slide prevention / permission means A can be moved from the first state. If it changes to a 2nd state and the latch member 4 enters and slides, the door D can be opened in an emergency.

しかる後、棒部材１１０を操作孔３２から抜くと、ラッチ部材４がコイルスプリング３３の押圧付勢力により前側へスライドし、掛止片４１が前方に突出するとともにカム５が逆方向に揺動して元の状態に戻る。 Thereafter, when the rod member 110 is removed from the operation hole 32, the latch member 4 slides forward by the pressing biasing force of the coil spring 33, the latching piece 41 projects forward, and the cam 5 swings in the reverse direction. To return to the original state.

したがって、この第１実施形態による場合には、ロック手段８のシリンダ錠８４を外側からキー操作してロック部材８１をロック解除位置に位置させると、ハンドル６の操作がロック解除されるとともに、操作片８５がスライド防止・許容手段Ａを、ラッチ部材４の出入りスライドを許容する第２状態にする。よってハンドル６の操作によりラッチ部材４をスライドさせて掛止片４１の出入れが可能となり、ドアＤを開閉することができる。一方、ロック手段８のシリンダ錠８４を外側からキー操作してロック部材８１をロック位置に位置させると、ハンドル６の操作がロック状態にされるとともに、操作片８５がスライド防止・許容手段Ａを、ラッチ部材４の入りスライドを防止する第１状態にする。よって、掛止片４１が外方へ突出し、かつハンドル６が操作できないロック状態に保持され、ドアＤを閉じた状態に保持させ得る。そして、このドアＤが閉じた状態において、スライド防止・許容手段Ａが、ラッチ部材４の入りスライドを防止する第１状態になっているので、係止状態における掛止片４１を外部からでは内側に入るようにスライドさせ得ず、確実に係止状態を確保することができる。 Therefore, in the case of this first embodiment, when the cylinder lock 84 of the lock means 8 is operated from the outside and the lock member 81 is positioned at the unlock position, the operation of the handle 6 is unlocked and the operation The piece 85 puts the slide prevention / permission means A into a second state in which the latch member 4 is allowed to slide in and out. Therefore, the latch member 4 can be slid by operating the handle 6 to allow the latch piece 41 to be put in and out, and the door D can be opened and closed. On the other hand, when the cylinder lock 84 of the lock means 8 is operated from the outside and the lock member 81 is positioned at the lock position, the operation of the handle 6 is locked and the operation piece 85 moves the slide prevention / allowance means A. The first state is set to prevent the latch member 4 from entering and sliding. Therefore, the latching piece 41 protrudes outward and the handle 6 can be held in a locked state, and the door D can be kept closed. When the door D is closed, the slide preventing / allowing means A is in the first state for preventing the latch member 4 from entering and sliding. It cannot be slid to enter, and the locked state can be reliably ensured.

また、第１実施形態において、上記第１状態において、ドアＤの内側から前記棒部材１１０を操作孔Ｇ、３２より挿入してカム５を揺動させることにより、被係止部材７の高さ変更部７２をドアＤ寄り側へ変位させるとスライド防止・許容手段Ａを第２状態にすることができる。よって、ドアＤが閉状態になっていても、非常開ドア機構Ｂを用い、つまりドアＤの内側からの棒部材１１０の操作でドアＤを容易に開けることができる。そして、このドア開閉装置１を、例えば冷蔵庫に適用することにより、従来頻発していた冷蔵庫内への閉じ込め事故を確実に防止することができる。 In the first embodiment, in the first state, the rod member 110 is inserted from the inside of the door D through the operation holes G and 32 and the cam 5 is swung, whereby the height of the locked member 7 is increased. When the changing portion 72 is displaced toward the door D, the slide preventing / allowing means A can be brought into the second state. Therefore, even if the door D is in the closed state, the door D can be easily opened by using the emergency opening door mechanism B, that is, by operating the bar member 110 from the inside of the door D. Then, by applying the door opening / closing device 1 to, for example, a refrigerator, it is possible to reliably prevent a confinement accident in the refrigerator that has frequently occurred in the past.

（第２実施形態）
図７は本発明の第２実施形態に係るドア開閉装置を示す正面断面図、図８はそのドア開閉装置の要部を示す平面図である。 (Second Embodiment)
FIG. 7 is a front sectional view showing a door opening / closing device according to a second embodiment of the present invention, and FIG. 8 is a plan view showing a main part of the door opening / closing device.

この第２実施形態のドア開閉装置１Ａは、非常開ドア機構が第１実施形態と異なる構成となっており、非常開ドア機構以外の箇所は第１実施形態と同一構成となっている。 In the door opening and closing apparatus 1A of the second embodiment, the emergency open door mechanism has a different configuration from that of the first embodiment, and portions other than the emergency open door mechanism have the same configuration as the first embodiment.

第２実施形態のドア開閉装置１Ａは、第１実施形態のカム５に代えて、カム５Ａと揺動部材９５とを備える。揺動部材９５は、ハンドル６の操作によりラッチ部材４を出入りスライドさせるものであって、ピン取付孔９６に取付けたピン９１を中心として揺動する。この揺動部材９５とラッチ部材４とは、ラッチ部材４のピン取付孔４５ａと揺動部材９５のピン取付孔９７にピン９０を取付けることで連結されている。この揺動部材９５には前記押し付け部５６が省略されている。 A door opening and closing device 1A according to the second embodiment includes a cam 5A and a swinging member 95 instead of the cam 5 according to the first embodiment. The swing member 95 slides the latch member 4 in and out by operating the handle 6, and swings around the pin 91 attached to the pin mounting hole 96. The swing member 95 and the latch member 4 are connected by attaching a pin 90 to the pin mounting hole 45a of the latch member 4 and the pin mounting hole 97 of the swing member 95. The pressing portion 56 is omitted from the swing member 95.

上記カム５Ａは、ハンドル６の操作がロックされた状態でドアＤを開にするという非常時にラッチ部材４を入りスライドさせるものであって、カム５Ａに設けたピン取付孔５７に前記ピン９１を挿着することにより、揺動部材９５と同様にピン９１を中心として揺動するようになっている。このカム５Ａの下部には、円弧状長孔５８が形成されていて、この長孔５８には上記ピン９０が取付けられている。つまり、このピン９０を介して、カム５Ａと揺動部材９５とラッチ部材４とが連結されている。 The cam 5A slides the latch member 4 in an emergency in which the door D is opened while the operation of the handle 6 is locked. The pin 91 is inserted into the pin mounting hole 57 provided in the cam 5A. By inserting and attaching, like the swing member 95, it swings around the pin 91. An arc-shaped long hole 58 is formed in the lower portion of the cam 5A, and the pin 90 is attached to the long hole 58. That is, the cam 5 </ b> A, the swing member 95, and the latch member 4 are connected via the pin 90.

上記カム５Ａは、揺動部材９５を挟む状態で設けられた一対のカム片９９、１００を有し、これらカム片９９、１００は金属板を加工したもので、前記ピン取付孔５７と、前記長孔５８と、後下側に相手側の揺動片へ向けて折曲げた折曲げ部９９ａ、１００ａとを備える。 The cam 5A has a pair of cam pieces 99, 100 provided with a swinging member 95 in between. The cam pieces 99, 100 are formed by processing a metal plate, and the pin mounting holes 57, The long hole 58 is provided with bent portions 99a and 100a that are bent toward the other swing piece on the rear lower side.

これらカム片９９、１００は、上記折曲げ部９９ａ、１００ａが重なる状態で、ピン９０に揺動可能に支持されており、周面には被係止部材７の突起７５を下方に押し付ける押し付け部９９ｂ、１００ｂが形成されている。この押し付け部９９ｂ、１００ｂと突起７５とは、非常開ドア機構Ｂ'を構成する。また、円弧状長孔５８の曲率半径は、揺動部材
９５のピン取付孔９６の中心とピン取付孔９７の中心との間の距離と同一寸法に設定されている。なお、図８中の１０１はラッチ部材４の対向片４５とカム片９９、１００との隙間を調整するためのスペーサである。 These cam pieces 99 and 100 are supported by the pin 90 in a state where the bent portions 99a and 100a are overlapped, and a pressing portion that presses the protrusion 75 of the locked member 7 downward on the peripheral surface. 99b and 100b are formed. The pressing portions 99b and 100b and the protrusion 75 constitute an emergency open door mechanism B ′. Further, the radius of curvature of the arc-shaped long hole 58 is set to the same dimension as the distance between the center of the pin mounting hole 96 of the swinging member 95 and the center of the pin mounting hole 97. Note that reference numeral 101 in FIG. 8 denotes a spacer for adjusting the gap between the opposing piece 45 of the latch member 4 and the cam pieces 99 and 100.

次に、この第２実施形態のドア開閉装置の開閉動作につき図９〜図１２に基づき説明する。 Next, the opening / closing operation of the door opening / closing device of the second embodiment will be described with reference to FIGS.

図９はロック手段８のロック部材８１にハンドル６の先端６５が干渉しないロック解除の状態を示す図で、図１０〜図１２はロック部材８１にハンドル６の先端６５が干渉したロック状態を示す図である。 FIG. 9 is a view showing the unlocked state in which the tip 65 of the handle 6 does not interfere with the lock member 81 of the lock means 8, and FIGS. 10 to 12 show the locked state in which the tip 65 of the handle 6 interferes with the lock member 81. FIG.

図９のロック解除状態においては、ロック部材８１にハンドル６の先端６５が干渉しないためハンドル６の操作が可能であり、また操作片８５の下部８５ａが被案内部７３の上面７３ａを下方に押し下げてラッチ部材４の段差４４が被係止部材７の前端部７４の上を通過し得る状態になっているので、ハンドル６の操作により揺動部材９５を揺動させることができ、これに伴いラッチ部材４が出入りスライドな第２状態にさせ得る。よって、ドアＤを開け閉めできる。 In the unlocked state of FIG. 9, the handle 65 can be operated because the tip 65 of the handle 6 does not interfere with the lock member 81, and the lower portion 85 a of the operation piece 85 pushes down the upper surface 73 a of the guided portion 73. Since the step 44 of the latch member 4 can pass over the front end portion 74 of the locked member 7, the swing member 95 can be swung by operating the handle 6. The latch member 4 can be brought into the second state where the slide member enters and exits. Therefore, the door D can be opened and closed.

一方、図１０のロック状態においては、ロック部材８１が図９に示す状態から後側にスライドし、ロック部材８１にハンドル６の先端６５が干渉しているため、ハンドル６を操作することができない。つまり、ハンドル６の操作によりドアＤを開け閉めできない。また、上述したようにロック部材８１の後方スライドに伴い、下部８５ａによる上面７３ａの押し下げ量が少ないか或いは押し下げない状態となっているため、ラッチ部材４の段差４４が被係止部材７の前端部７４に当たってラッチ部材４の入りスライドが防止された第１状態となっている。この場合において、ドアＤを開けるために、図１０および図１１に示すように、ドアＤの内側から前記棒部材１１０を操作孔Ｇ、３２より挿入してカム５Ａを揺動させる。これにより、カム５Ａの押し付け部９９ｂ、１００ｂが被係止部材７の突起７５を下側へ押し付けてドア寄り側へ変位させ、スライド防止・許容手段Ａ（第１実施形態と同じ構成）が第１状態からラッチ部材４を入りスライドさせ得る状態（第２状態）になる。上記押し付け部９９ｂ、１００ｂは、被係止部材７の前端部７４の上をラッチ部材４の段差４４が後側に通過するまで高さ変更部７２を下方に押し付けるように周面に沿って所定長さ形成しておくことで、スライド防止・許容手段Ａを第２状態に保持させ得る。 On the other hand, in the locked state of FIG. 10, the lock member 81 slides rearward from the state shown in FIG. 9, and the tip 65 of the handle 6 interferes with the lock member 81, so the handle 6 cannot be operated. . That is, the door D cannot be opened and closed by operating the handle 6. In addition, as described above, as the locking member 81 slides rearward, the lower surface 85a pushes the upper surface 73a little or not, so that the step 44 of the latch member 4 is at the front end of the locked member 7. It is in the first state where the latch member 4 is prevented from entering and sliding against the portion 74. In this case, in order to open the door D, as shown in FIGS. 10 and 11, the bar member 110 is inserted from the inside of the door D through the operation holes G and 32, and the cam 5A is swung. As a result, the pressing portions 99b and 100b of the cam 5A press the projection 75 of the locked member 7 downward to displace it toward the door, and the slide preventing / allowing means A (the same configuration as in the first embodiment) is the first. From the first state, the latch member 4 can enter and slide (second state). The pressing portions 99b and 100b are predetermined along the peripheral surface so as to press the height changing portion 72 downward on the front end portion 74 of the locked member 7 until the step 44 of the latch member 4 passes to the rear side. By forming the length, the slide preventing / allowing means A can be held in the second state.

そして、ラッチ部材４を入りスライドさせ得る状態（第２状態）になった後、カム５Ａの更なる揺動に伴って長孔５８の前側端部５８ａにピン９０が当たるようになると、図１２に示すように、前記棒部材１１０の更なる押し込みにより、つまりカム５Ａの更なる揺動により、ラッチ部材４が入りスライドする（このラッチ部材４の入りスライドにより揺動部材９５が揺動する。）。上記長孔５８とピン取付孔４５ａとピン９０とは、カム５Ａの揺動開始から長孔５８の長さ分だけ遅れてラッチ部材４を入りスライドさせる、つまりカム５Ａを揺動駆動させて被係止部材７の前端部７４が係止部である段差４４に引っ掛からない非係止の状態になった後に、ラッチ部材４を入りスライドさせる遅延手段Ｃを構成する。 When the pin 90 comes into contact with the front end 58a of the long hole 58 as the cam 5A is further swung after the latch member 4 can enter and slide (second state), FIG. As shown, the latch member 4 enters and slides when the rod member 110 is further pushed, that is, when the cam 5A further swings (the swing member 95 swings due to the sliding of the latch member 4). ). The long hole 58, the pin mounting hole 45a, and the pin 90 are inserted into the latch member 4 with a delay of the length of the long hole 58 from the start of swinging of the cam 5A, that is, the cam 5A is driven to swing. After the front end portion 74 of the locking member 7 is in a non-locking state where it does not get caught by the step 44 that is the locking portion, a delay means C that enters and slides the latch member 4 is configured.

そして、上述したラッチ部材４の入りスライドにより、ドアＤが閉状態で施錠されても、ドアＤの内側からの棒部材の操作でドアＤを容易に開けることができる。また、このドア開閉装置１Ａを、例えば冷蔵庫に適用することにより、従来頻発していた冷蔵庫内への閉じ込め事故を確実に防止することができる。 And even if the door D is locked in the closed state by the sliding of the latch member 4 described above, the door D can be easily opened by operating the bar member from the inside of the door D. Further, by applying the door opening / closing device 1A to, for example, a refrigerator, it is possible to reliably prevent a confinement accident in the refrigerator that has frequently occurred in the past.

したがって、この第２実施形態による場合には、上記遅延手段Ｃを有するので、被係止部材７（前端部７４）と係止部（段差４４）との間に遊びを持たせておかなくても、両者が引っ掛かること無しにラッチ部材４の入りスライドを行わせることが可能になる。 Therefore, in the case of the second embodiment, since the delay means C is provided, there is no play between the locked member 7 (front end portion 74) and the locking portion (step 44). However, it is possible to cause the latch member 4 to slide without being caught by both.

なお、上述した第２実施形態においてはカムに円弧状長孔を、ラッチ部材にピン取付孔をそれぞれ設けているが、本発明はこれに限らない。例えば、逆にカムにピン取付孔を、ラッチ部材に円弧状長孔をそれぞれ設けてもよく、同様の効果が得られる。 In the second embodiment described above, the cam is provided with the arc-shaped elongated hole and the latch member is provided with the pin mounting hole, but the present invention is not limited to this. For example, conversely, a pin mounting hole may be provided in the cam, and an arcuate long hole may be provided in the latch member, and the same effect can be obtained.

また、第２実施形態においても第１実施形態と同様に、揺動部材９５の揺動によりピン取付孔５１が上下方向に変位しても、ラッチ部材４を支障なくスライドさせ得るように、ピン取付孔４５ａとピン取付孔５１とのうちの少なくとも片方の直径（ピン取付孔５１が円弧状長孔の場合は大径半径と小径半径との差）を大きく形成しておくことが好ましい。 Also in the second embodiment, as in the first embodiment, the pin can be slid without trouble even if the pin mounting hole 51 is displaced in the vertical direction by the swing of the swing member 95. It is preferable that a diameter of at least one of the mounting hole 45a and the pin mounting hole 51 (a difference between a large-diameter radius and a small-diameter radius when the pin mounting hole 51 is an arc-shaped long hole) is formed large.

更に、上述した第１、第２実施形態ではスライド防止・許容手段Ａとして、カムに設けた押し付け部５６（９９ａ、１００ａ）で被係止部材７の突起７５を下側に押し付ける構成としているが、本発明はこれに限らない。例えば被係止部材７の突起７５は省略してもよい。 Further, in the first and second embodiments described above, as the slide preventing / allowing means A, the projection 75 of the locked member 7 is pressed downward by the pressing portion 56 (99a, 100a) provided on the cam. The present invention is not limited to this. For example, the protrusion 75 of the locked member 7 may be omitted.

本発明に係るドア開閉装置の第１実施形態を示す分解斜視図である。1 is an exploded perspective view showing a first embodiment of a door opening and closing device according to the present invention. 図１のドア開閉装置の組み立て斜視図である。It is an assembly perspective view of the door opening and closing apparatus of FIG. 図２のＩＩＩ−ＩＩＩ線断面図であり、ハンドルをロックした状態を示す。It is the III-III sectional view taken on the line of FIG. 2, and shows the state which locked the handle. 図３に対応する部分の断面図であり、ハンドルロックを解除した状態を示す。FIG. 4 is a cross-sectional view of a portion corresponding to FIG. 3, showing a state where the handle lock is released. 底蓋に被係止部材を取付けた状態を示す正面図である。It is a front view which shows the state which attached the to-be-latched member to the bottom cover. 図５の平面図である。FIG. 6 is a plan view of FIG. 5. 本発明の第２実施形態に係るドア開閉装置を示す正面断面図である。It is front sectional drawing which shows the door opening / closing apparatus which concerns on 2nd Embodiment of this invention. 図７のドア開閉装置の要部を示す平面図である。It is a top view which shows the principal part of the door opening / closing apparatus of FIG. ロック手段のロック部材にハンドルの先端が干渉しないロック解除の状態を示す図である。It is a figure which shows the state of unlocking which the front-end | tip of a handle does not interfere with the locking member of a locking means. ロック部材にハンドルの先端が干渉したロック状態を示す図であり、カムの揺動前の状況を示す。It is a figure which shows the locked state which the front-end | tip of the handle interfered with the lock member, and shows the condition before the cam swinging. ロック部材にハンドルの先端が干渉したロック状態を示す図であり、カムを少し揺動させた状況を示す。It is a figure which shows the locked state which the front-end | tip of the handle interfered with the locking member, and shows the situation where the cam was slightly swung. ロック部材にハンドルの先端が干渉したロック状態を示す図であり、揺動部材の揺動によりラッチ部材が入りスライドした状況を示す。It is a figure which shows the locked state which the front-end | tip of the handle interfered with the lock member, and shows the situation where the latch member entered and slid by the swing of the swing member.

１、１Ａドア開閉装置
２ケーシング
４ラッチ部材
４１掛止片
５、５Ａカム
６ハンドル
７被係止部材（スライド防止・許容手段Ａ）
８ロック手段
３３コイルスプリング
４４段差（係止部：スライド防止・許容手段Ａ）
５８円弧状長孔
８１ロック部材
８５操作片
９５揺動部材Ｂ、Ｂ' 非常開ドア機構
Ｃ遅延手段
Ｄ冷蔵庫のドア
Ｇ操作孔 DESCRIPTION OF SYMBOLS 1, 1A Door opening and closing device 2 Casing 4 Latch member 41 Latching piece 5, 5A Cam 6 Handle 7 Locked member (slide prevention / allowance means A)
8 Locking means 33 Coil spring 44 Step (Locking part: Slide prevention / allowing means A)
58 Arc-shaped long hole 81 Lock member 85 Operation piece 95 Swing member B, B 'Emergency open door mechanism C Delay means D Refrigerator door G Operation hole

Claims

A casing fixed to the door;
A latch member slidably provided on the casing so that the latching piece provided at the end can protrude outward;
A handle provided on the casing so as to slide the latch member to perform the operation of moving the latch piece;
Locking means operated from the outside to either the state of locking the handle operation or the state of unlocking;
By the operation of the locking means, the first state in which the latch member is prevented from entering / sliding to maintain the state in which the latching piece protrudes outward is changed to the second state in which the latch member is allowed to enter / exit. Anti-sliding / allowing means ,
An emergency opening door mechanism that changes the sliding prevention / permission means from the first state to the second state and allows the latch member to enter and slide by an operation from the inside of the door. ,
The lock means includes a lock member that can change a position between a lock position that interferes with the handle and locks the handle operation, and a release position that enables the handle operation by releasing the interference, and the lock member. An operation piece for operating the slide prevention / permission means in the first state when the member is in the lock position, and operating the slide prevention / permission means in the second state when the member is in the release position; as it has,
The slide preventing / allowing means is provided inside the casing and on the inside of the door of the latch member, and on the casing, and is displaceable on the door side and on the opposite side. , Engaged with the locking portion with the displacement to the opposite side to be in the first state, and disengaged with the locking portion with the displacement toward the door side to be in the second state. A locked member,
The emergency opening door mechanism is connected to the latch member and swings to displace the locked member toward the door side by swinging when the first state is established by operating the operation piece. And opening and closing the door, characterized by having a cam for entering and sliding the latch member and an operating hole provided in the door for inserting a rod member for swinging the cam from the inside of the door. apparatus.

The door opening and closing apparatus according to claim 1,
The emergency opening door mechanism has a delay means provided for the latch member and the cam, and delays the sliding of the latch member from the start of swinging of the cam,
The delay means includes an arc-shaped elongated hole on one of the cam and the latch member, and a pin mounting hole on the other, and a pin is inserted over the elongated hole and the pin mounting hole. A door opening and closing device characterized in that when it is driven to swing, the latch member is inserted and slid with a delay corresponding to the long hole.

The door opening and closing device according to claim 1 or 2,
A door opening and closing device comprising a spring that presses and urges the latch member so that the latching piece protrudes outward of the casing.