JP3955046B2

JP3955046B2 - Sliding door self-closing device

Info

Publication number: JP3955046B2
Application number: JP2004198946A
Authority: JP
Inventors: 純一川名; 光昭庄司
Original assignee: Best Corp
Current assignee: Best Corp
Priority date: 2004-07-06
Filing date: 2004-07-06
Publication date: 2007-08-08
Anticipated expiration: 2024-07-06
Also published as: JP2006022480A

Description

本発明は、引戸が全開すると、その全開位置で引戸を保持していったん停止させ、非全開の開位置にあるときは、その都度、引戸を自動的に閉止させると共に、特に火災など異常を発生した緊急時に引戸が全開位置で停止状態にあるときは、異常発生検知器と連動して防災のため引戸を閉止させるようにした引戸自閉装置に関する。 When the sliding door is fully opened, the sliding door is held and stopped once in the fully opened position. When the sliding door is in the non-fully opened position, the sliding door is automatically closed each time and an abnormality such as a fire is generated. The present invention relates to a sliding door self-closing device that closes a sliding door for disaster prevention in conjunction with an abnormality occurrence detector when the sliding door is in a fully open position and stopped in an emergency.

従来、この種の引戸自閉装置は、たとえば引戸を組み付ける戸枠の上枠部戸先寄りに設置され、うず巻きバネによって巻取方向に常時付勢したワイヤーを内装した引戸付勢手段を備えている。そして、付勢ワイヤーの自由端側を引戸上の戸車に掛け止め、把手を持って引戸を押し開くと、うず巻きバネに抗して付勢ワイヤーが繰り出され、開く途中で手を離すと、うず巻きバネで付勢ワイヤーを巻き取り、引戸を閉止方向へ引っ張って自動的に閉止させるようにしている。一方、この引戸自閉装置は、たとえば図１１に示すように、引戸ａの戸尻側上端に係止体ｂを搭載する一方、戸枠ｃの上枠部戸尻側に、舌片状の板バネからなるラッチ体ｄを作動させる駆動制御手段（緊急解除手段）ｅを設置している。 Conventionally, this type of sliding door self-closing device is equipped with a sliding door urging means that is installed near the top edge of the door frame for assembling the sliding door, for example, and is internally urged in the winding direction by a spiral spring. Yes. And when the free end side of the urging wire is hooked on the door wheel on the sliding door and the sliding door is pushed open by holding the handle, the urging wire is fed out against the spiral spring, and if you release your hand while opening, The urging wire is wound with a spring and the sliding door is automatically closed by pulling it in the closing direction. On the other hand, as shown in FIG. 11, for example, this sliding door self-closing device has a locking piece b mounted on the upper end of the sliding door a on the door bottom side, while the upper frame portion of the door frame c has a tongue-like shape. Drive control means (emergency release means) e for operating a latch body d made of a leaf spring is provided.

そして、この従来の引戸自閉装置では、引戸ａを押し開いて全開位置に近づくと、その戸尻側で係止体ｂが、ラッチ体ｄに当接して該ラッチ体ｄを押し上げながら通過し、ラッチ体ｄを越えるとそれと係合し、引戸ａは全開位置でいったん停止される。しかる後、全開位置で停止した引戸ａを閉止する場合は、把手を持って引戸ａを押し引くと、係止体ｂによりラッチ体ｄが押し上がって係合状態が解除され、その後、手を離せば上記引戸付勢手段のワイヤー巻取作用によって引戸ａは自動的に閉止する。 In this conventional sliding door self-closing device, when the sliding door a is pushed open and approaches the fully opened position, the locking body b passes on the door bottom side while abutting against the latch body d and pushing up the latch body d. When the latch body d is exceeded, it engages with it, and the sliding door a is stopped once in the fully open position. After that, when closing the sliding door a stopped at the fully opened position, if the sliding door a is pushed and pulled by holding the handle, the latch body d is pushed up by the locking body b and the engaged state is released. When the door is released, the sliding door a is automatically closed by the wire winding action of the sliding door urging means.

さて、引戸ａが全開位置で停止状態にある場合に、異常発生検知器が火災などの異常発生を検知すると、たとえば図１２に示すように、異常検知信号を受けたソレノイド１が励磁されてプランジャ１ａを引き込むと、そのプランジャ１ａの先端に、支軸２ａを中心として回動可能に連結されたＬ状フック２が図中反時計方向へ回動し、ランナー３に突設した係止ピン３ａとの係合が外れ、ランナー３が作動用スプリング４のバネ付勢力で図中矢印方向へと移動する。すると、ランナー３の移動に伴い、そのランナー３と可動板６とを連結ピン５ａで連結したリンク５を介し、可動板６が回動ピン６ａを支点として上方へ回動し、該可動板６の下面に設けたラッチ体ｄも上方の退避位置へ回動して係止体ｂとの係合が外れ、引戸ａの停止状態が解除される。これにより、引戸ａは、上記引戸付勢手段のワイヤー巻取作用により引っ張られて自動的に閉止方向へ移動し、戸枠ｃの開口部を閉鎖して火災による煙の流出入や延焼を未然に防止しようとする。
特開平１１−３０３４８９号公報 Now, when the sliding door a is in the stopped state at the fully open position and the abnormality detection detector detects an abnormality such as a fire, the solenoid 1 that has received the abnormality detection signal is excited as shown in FIG. When the lever 1a is pulled in, the L-shaped hook 2 connected to the tip of the plunger 1a so as to be rotatable about the support shaft 2a rotates counterclockwise in the figure, and the locking pin 3a protruding from the runner 3 is provided. Is disengaged, and the runner 3 moves in the direction of the arrow in the figure by the spring biasing force of the actuating spring 4. Then, along with the movement of the runner 3, the movable plate 6 is rotated upward with the rotation pin 6a as a fulcrum through the link 5 in which the runner 3 and the movable plate 6 are connected by the connection pin 5a. The latch body d provided on the lower surface of the door is also rotated to the upper retracted position so as to be disengaged from the locking body b, and the stopped state of the sliding door a is released. As a result, the sliding door a is pulled by the wire winding action of the sliding door urging means and automatically moves in the closing direction, and the opening of the door frame c is closed to prevent smoke from flowing in and out and spreading fire. Try to prevent.
JP 11-303489 A

従来の引戸自閉装置は、そもそもソレノイド１が少ない消費電力で出力する駆動装置であるため、異常発生時に引戸ａの停止状態を解除するときに、斯かるソレノイド１の駆動力でもラッチ体ｄが退避位置へ回動するように、ソレノイド１とラッチ体ｄ間には、作動用スプリング４の他に、Ｌ状フック２やランナー３やリンク５や可動板６等からなる駆動力増幅機構を介在させた構造になっている。しかし、これでは、駆動制御手段ｅの構造が複雑になり、それだけ部品点数も増大してコスト高を招くという問題があった。しかも、装置全体が大型になるため、それだけ戸枠ｃの上枠部側に装置の設置スペースを上下方向に余計に確保する必要があり、最近、戸車構造に代え、薄板なスライドレールを使って引戸を吊設し、引戸取付構造のコンパクト化と省スペース化を図ろうとする技術開発傾向に逆行するという課題があった。 Since the conventional sliding door self-closing device is a driving device in which the solenoid 1 outputs with low power consumption in the first place, when the suspension state of the sliding door a is canceled when an abnormality occurs, the latch body d is also driven by the driving force of the solenoid 1. A driving force amplifying mechanism including an L-shaped hook 2, a runner 3, a link 5, a movable plate 6 and the like is interposed between the solenoid 1 and the latch body d so as to rotate to the retracted position in addition to the operating spring 4. The structure is However, in this case, there is a problem that the structure of the drive control means e becomes complicated, and the number of parts increases accordingly, resulting in high costs. Moreover, since the entire device becomes large, it is necessary to secure an additional installation space in the vertical direction on the upper frame portion side of the door frame c. Recently, instead of the door structure, a thin slide rail is used. There was a problem that the sliding doors were suspended to go against the technological development trend to make the sliding door mounting structure compact and space-saving.

そこで、本発明の目的は、上述のような引戸自閉装置において、従来の課題を解決し、構造を簡単にしてコストを低減し、しかも、全体に装置のコンパクト化を実現して薄型なスライドレールを使って防災用引戸を吊設する場合にも適用可能にすることにある。 Accordingly, an object of the present invention is to solve the conventional problems in the sliding door self-closing device as described above, simplify the structure and reduce the cost, and realize a compact device as a whole to achieve a thin slide. It is to make it applicable also when hanging a sliding door for disaster prevention using a rail.

上記した発明の目的を達成すべく、請求項１に記載の発明は、戸枠の上枠部に固定するアウターレールに対し引戸上に組み付けるインナーレールをリテーナで保持した多数のボールを介して摺動自在に係合させた構造のスライドレール体を介して開閉方向にスライド自在に前記上枠部に吊設する引戸の自閉装置であって、引戸が全開すると、その全開位置で引戸を保持していったん停止させ、非全開の開位置にあるときは、その都度、引戸を自動的に閉止させると共に、異常発生時に引戸が全開位置で停止状態にあるときは、異常発生検知器と連動して引戸を閉止させる引戸自閉装置において、前記インナーレールに組み付ける引戸上端側に前記戸枠の上枠部に向けて取り付ける第１磁性体と、引戸が全開位置にあるときに前記第１磁性体と対向する位置の前記戸枠の上枠部に設置して引戸の自閉動作をコントロールする駆動制御手段を備え、該駆動制御手段は、励磁動作に応じてプランジャを作動させるソレノイドと、前記異常発生検知器から異常検知信号を受信しない正常時は前記プランジャに一端のプランジャ係合部を係止した回転規制位置で保持される一方、異常検知信号を受信した異常発生時に前記ソレノイドが励磁動作すると、そのプランジャから前記プランジャ係合部が外れて回動可能になるように軸支した回動カムとを備え、該回動カムには、それが回転規制位置にあるときに引戸が全開されると、真向かいにある第１磁性体との磁気的吸引作用により引戸を全開位置の停止状態で保持する一方、異常発生時に前記回動カムが回動すると、それに従って前記第１磁性体に対しズレ動いて互いの磁気吸引力が弱められ引戸の停止状態を解除する第２磁性体を付設し、それら第１および第２磁性体の双方又は一方が永久磁石からなることを特徴とする。 In order to achieve the object of the invention described above, the invention according to claim 1 is slid through a plurality of balls holding an inner rail assembled on a sliding door with a retainer with respect to an outer rail fixed to the upper frame portion of the door frame. A self-closing device for a sliding door that is suspended from the upper frame portion so as to be slidable in the opening and closing direction through a slide rail body that is movably engaged. When the sliding door is fully opened, the sliding door is held in its fully open position. When it is in the open position that is not fully open, the sliding door is automatically closed each time, and when the sliding door is in the stopped state in the fully open position when an abnormality occurs, it is linked with the abnormality detection detector. In the sliding door self-closing device that closes the sliding door, the first magnetic body attached to the upper frame of the door frame on the upper end side of the sliding door assembled to the inner rail, and the first magnetic body when the sliding door is in the fully open position When Installed in the upper frame portion of the door frame in the position toward a drive control means for controlling the self-closing operation of the sliding door, the drive control means includes a solenoid to actuate the plunger in response to excitation operation, the abnormality occurrence When the abnormality detection signal is not received from the detector, the solenoid is excited at the time of occurrence of an abnormality while receiving the abnormality detection signal, while being held at the rotation restricting position where the plunger engaging portion at one end is locked to the plunger, and a rotating cam that said plunger engaging portion from the plunger is axially supported so as to be rotatable off, the the pivoting cam, when it sliding door is fully opened when in the rotation restriction position while held in the stopped state of the fully open position the sliding door by magnetic attraction acting between the first magnetic body directly opposite, when the rotating cam when an abnormality occurs is rotated, the first magnetic accordingly Moving displacement relative to the body by attaching a second magnetic body to release the stopped state of the sliding door weakened magnetic attraction of each other, one or both of their first and second magnetic body and characterized by comprising a permanent magnet To do.

本発明の引戸自閉装置によれば、正常時に全開位置にある引戸は、向かい合った引戸側の第１磁性体と戸枠側の回動カムにある第２磁性体間の磁気的吸引作用で保持して停止する一方、異常発生時は、ソレノイドを励磁動作させて、プランジャからプランジャ係合部を外して回動カムを回動し、その第２磁性体を引戸側の第１磁性体からズレ動かして離隔させることによって引戸の停止状態を解除する構成であるため、従来の如く複雑な駆動力増幅機構を介在させることのない簡単な構造とし、それだけ部品点数を少なくしてコストを著しく低減することができる。また、全体に装置のコンパクト化を実現し、それだけ戸枠の上枠部側に装置の設置スペースを余計に確保する必要がなく、そのため戸車方式に限らず、薄型なスライドレールを使って防災用引戸を吊設する場合にも、そのまま適用することができる。 According to the sliding door self-closing device of the present invention, the sliding door in the fully open position at the normal time is a magnetic attraction between the first magnetic body on the sliding door side and the second magnetic body on the rotating cam on the door frame side. While holding and stopping, when an abnormality occurs, the solenoid is energized to remove the plunger engaging portion from the plunger and rotate the rotating cam to move the second magnetic body from the first magnetic body on the sliding door side. Because it is configured to release the sliding door stop state by moving it apart, it has a simple structure that does not intervene a complicated driving force amplification mechanism as in the past, and the number of parts is reduced accordingly and the cost is significantly reduced. can do. In addition, the overall size of the device has been reduced, and it is not necessary to secure an extra space for installing the device on the upper frame side of the door frame. The present invention can be applied as it is even when the sliding door is suspended.

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

図１は、本発明の一例である引戸自閉装置を適用した引戸構造体の要部を拡大して示す分解斜視図、図２は、その引戸自閉装置を適用した引戸構造体全体を示す分解斜視図である。図１および図２において、符号Ａ・Ｂは、図示省略した戸枠の上枠部に、連動的にスライドさせて戸枠の開口部を開閉する、所謂２連片引式の防災用引戸で、図中右の戸枠奥寄りの引戸を第１引戸Ａとし、図中左の手前寄りの引戸を第２引戸Ｂとする。図示例の両引戸Ａ・Ｂは、第２引戸Ｂのスライドに連動して第１引戸がスライドするようにスライドレール装置Ｒを介して前記戸枠の上枠部に吊設している。 FIG. 1 is an exploded perspective view showing an enlarged main part of a sliding door structure to which a sliding door self-closing device as an example of the present invention is applied, and FIG. 2 shows the entire sliding door structure to which the sliding door self-closing device is applied. It is a disassembled perspective view. In FIG. 1 and FIG. 2, reference symbols A and B are so-called double-strip type disaster-proof sliding doors that open and close the opening of the door frame by sliding on the upper frame of the door frame (not shown). The sliding door on the right side in the figure is the first sliding door A, and the sliding door on the left side in the figure is the second sliding door B. Both sliding doors A and B in the illustrated example are suspended from the upper frame portion of the door frame via a slide rail device R so that the first sliding door slides in conjunction with the sliding of the second sliding door B.

スライドレール装置Ｒは、第１引戸Ａをスライドさせる第１スライドレール体ｒ１と、第２引戸Ｂをスライドさせる第２スライドレール体ｒ２と、第１引戸Ａを第１スライドレール体ｒ１に取り付ける第１取付金具ユニットａ１と、第２引戸Ｂを第１スライドレール体ｒ１に取り付ける第２取付金具ユニットａ２と、第１引戸Ａと第２引戸Ｂを連結する連動ワイヤーＷ１を備えた構造になっている。 The slide rail device R includes a first slide rail body r1 that slides the first sliding door A, a second slide rail body r2 that slides the second sliding door B, and a first slide door A that attaches the first sliding door A to the first slide rail body r1. 1 mounting bracket unit a1, a second mounting bracket unit a2 for mounting the second sliding door B to the first slide rail body r1, and an interlocking wire W1 for connecting the first sliding door A and the second sliding door B. Yes.

スライドレール体ｒ１・ｒ２は、共にアウターレール１０と、２本のインナーレール１１と、リテーナ１２とを備え、全体に薄板なスライドレール構造に組み立ててなる。アウターレール１０は、帯状の金属プレートをプレスで成形し、図３に示すように、平らな取付板部１０ａの両側縁を互いに向き合う内向きに湾曲させて、そこにボールガイド部１０ｂを形成している。インナーレール１１は、アウターレール１０の長さに所定の開閉ストロークの距離を差し引いた長さサイズの帯状金属プレートを用いてプレスで成形し、中央で断面略コ形状に屈曲させた取付部１１ａの両側縁を互いに離れる外向きに湾曲させて、そこにボールガイド部１１ｂを形成してなる。リテーナ１２は、長尺な金属プレートを用いて曲げ成形し、平行なリテーナ本体部１３・１３に、コ状に屈曲させた多数の支持片部１３ａ…を連設し、各支持片部１３ａにそれぞれ保持穴を形成し、それら保持穴にそれぞれ金属製の小径ボール１４を嵌着して転動自在に保持してなる。 The slide rail bodies r1 and r2 each include an outer rail 10, two inner rails 11, and a retainer 12, and are assembled into a thin slide rail structure as a whole. The outer rail 10 is formed by pressing a band-shaped metal plate with a press and curving both side edges of the flat mounting plate portion 10a inward to face each other to form a ball guide portion 10b there. ing. The inner rail 11 is formed by a press using a belt-shaped metal plate having a length size obtained by subtracting a predetermined opening / closing stroke distance from the length of the outer rail 10, and the inner rail 11 is bent in a substantially U-shaped cross section at the center. Both side edges are curved outwardly away from each other, and a ball guide portion 11b is formed there. The retainer 12 is bent using a long metal plate, and a plurality of support piece portions 13a... Bent in a U-shape are connected to the parallel retainer main body portions 13 and 13, and the support piece portions 13a are connected to each other. Each holding hole is formed, and a metal small-diameter ball 14 is fitted into each holding hole so as to be freely rollable.

そして、リテーナ１２を、アウターレール１０に対し、保持したボール１４を左右のボールガイド部１０ｂに係合して嵌入し、次いで、インナーレール１１を、左右のボールガイド部１１ｂをボール１４に係合させてリテーナ１２内に嵌入し、リテーナ１２を介してアウターレール１０に相対的に摺動可能に嵌合し、スライドレール体ｒ１・ｒ２をそれぞれ組み立てる。スライドレール体ｒ１・ｒ２は、それぞれインナーレール１１を摺動させると、ボール１４…が両レール１０・１１間で転動し、それらボール１４に押されてリテーナ１２がアウターレール１０に対して所定開閉ストロークの略１／２分だけ移動すると同時に、一方で、インナーレール１１がアウターレール１０に対し所定開閉ストロークだけ相対移動するように設定されている。 Then, the retainer 12 is fitted to the outer rail 10 by engaging the held ball 14 with the left and right ball guide portions 10 b, and then the inner rail 11 is engaged with the left and right ball guide portions 11 b with the ball 14. Then, it is fitted into the retainer 12, and is fitted to the outer rail 10 via the retainer 12 so as to be relatively slidable, and the slide rail bodies r1 and r2 are assembled. When the inner rail 11 is slid on the slide rail bodies r1 and r2, the balls 14 roll between the rails 10 and 11, and the retainer 12 is pressed against the outer rail 10 by being pushed by the balls 14. At the same time, the inner rail 11 is set to move relative to the outer rail 10 by a predetermined opening / closing stroke.

第１取付金具ユニットａ１は、図１および図２に示すように、第１引戸Ａの上端面において、それぞれ木口面寄りの戸先側と戸尻側に細長い取付プレート１５・１６をねじ止めし、それら取付プレート上の片側にそれぞれレール取付金具１７・１８を軸支し、他側に滑車１９・２０を軸支して組み付けてなる。第２取付金具ユニットａ２は、第２引戸Ｂの上端面において、同様にそれぞれ木口面寄りの戸先側と戸尻側に取付プレート２１・２２をねじ止めし、それら取付プレート上にそれぞれレール取付金具２３・２４を軸支して組み付け、特に、戸尻側取付金具２４に、ワイヤー連結プレート２５を立ててねじ止めしてなる。 As shown in FIGS. 1 and 2, the first mounting bracket unit a1 is configured by screwing elongate mounting plates 15 and 16 to the door end side and the door bottom side near the end of the first sliding door A, respectively. The rail mounting brackets 17 and 18 are pivotally supported on one side of the mounting plates, and the pulleys 19 and 20 are pivotally supported on the other side. In the second mounting bracket unit a2, the mounting plates 21 and 22 are similarly screwed to the door end side and the door bottom side near the mouth end surface on the upper end surface of the second sliding door B, and rail mounting is performed on each of the mounting plates. The metal fittings 23 and 24 are pivotally supported and assembled, and in particular, the wire connection plate 25 is erected and screwed to the door-side mounting metal fitting 24.

連動ワイヤーＷ１は、有端状の金属ワイヤーで、両端をローラ形状のワイヤーリング２６に繋いでループ状に形成する。そして、斯かる連動ワイヤーＷ１は、ワイヤーリング２６を、後述する前記戸枠の上枠部の所定まぐさ位置に固着し、全体を第１引戸Ａ上で滑車１９・２０間に掛け回す一方、そのワイヤー途中を第２引戸Ｂ上のワイヤー連結プレート２５に止着し、これにより、両引戸Ａ・Ｂを連動して移動可能に連結してなる。なお、連動ワイヤーＷ１は、テンション調整金具２７で張り具合いを調整して滑車１９・２０間に張り渡されている。 The interlocking wire W1 is an end-shaped metal wire, and both ends are connected to a roller-shaped wire ring 26 to form a loop shape. And such an interlocking wire W1 fixes the wire ring 26 to a predetermined lintel position of the upper frame portion of the door frame described later, and hangs the whole between the pulleys 19 and 20 on the first sliding door A, The middle of the wire is fastened to the wire connecting plate 25 on the second sliding door B, thereby connecting the sliding doors A and B so as to be movable. The interlocking wire W1 is stretched between the pulleys 19 and 20 by adjusting the tension with the tension adjusting bracket 27.

以上の構成部品からなるスライドレール装置Ｒは、スライドレール体ｒ１・ｒ２を横向きに寝かせて配置し、各アウターレール１０を前記上枠部の天井側に固定して並列的に敷設し、下向きの各一対のインナーレール１１に対し、それぞれ取付金具ユニットａ１・ａ２を介して引戸Ａ・Ｂを組み付ける。これによって、両引戸Ａ・Ｂは、前記戸枠の上枠部に、戸枠開口部の左右開閉方向へ連動してスライドするように吊設される。従って、たとえば引戸閉時に、戸枠開口部を全開させた全開位置にある第２引戸Ｂを閉止方向へ引き出すと、これに従って連動ワイヤーＷ１が引っ張られ、そのループ形状の位置が閉止方向へ移動し、この第２引戸Ｂの動き出しに対し連動して第１引戸Ａが少し遅れて引き出される。こうして両引戸Ａ・Ｂが順次連動的にスライドして戸枠開口部を全閉させる。 The slide rail device R composed of the above-described components is arranged by laying the slide rail bodies r1 and r2 sideways, fixing the outer rails 10 to the ceiling side of the upper frame portion, and laying them in parallel. Sliding doors A and B are assembled to each pair of inner rails 11 via mounting bracket units a1 and a2, respectively. Thus, the sliding doors A and B are suspended from the upper frame portion of the door frame so as to slide in conjunction with the left and right opening and closing directions of the door frame opening. Therefore, for example, when the sliding door is closed, when the second sliding door B in the fully opened position where the door frame opening is fully opened is pulled out in the closing direction, the interlocking wire W1 is pulled accordingly, and the position of the loop shape moves in the closing direction. The first sliding door A is pulled out with a slight delay in conjunction with the movement of the second sliding door B. In this way, the sliding doors A and B sequentially slide in an interlocking manner to fully close the door frame opening.

さて、このようにスライドレール装置Ｒでスライドさせて開閉する引戸Ａ・Ｂは、それらが半開きなど非全開の開位置にあるとき又は火災などの異常発生時に全開位置にあるときには、本発明の引戸自閉装置Ｃが作動して自動的に閉止するようになっている。 Now, the sliding doors A and B that are opened and closed by sliding with the slide rail device R in this way are in the fully open position when they are in the fully open position such as half-opened or when an abnormality such as a fire occurs. The self-closing device C operates to automatically close.

図示例の引戸自閉装置Ｃは、図１および図２に示すように、引戸Ａ・Ｂを自閉動作させるゼンマイ式駆動手段３０と、ゼンマイ式駆動手段３０に備えた付勢ワイヤーＷ２を第２引戸Ｂに連結するワイヤー連結手段３５と、両引戸Ａ・Ｂの自閉動作をコントロールする駆動制御手段４０とからなる。 As shown in FIGS. 1 and 2, the sliding door self-closing device C in the illustrated example includes a spring-type driving means 30 for automatically closing the sliding doors A and B, and a biasing wire W2 provided in the mainspring-type driving means 30. It comprises wire connecting means 35 for connecting to the two sliding doors B, and drive control means 40 for controlling the self-closing operation of both sliding doors A and B.

ゼンマイ式駆動手段３０は、前記戸枠の上枠部戸先寄りに固定している。斯かるゼンマイ式駆動手段３０は、図示省略するが、うず巻きバネとそれと同軸にワイヤーリールを内蔵すると共に、ワイヤーリールにワイヤー基端を固定して付勢ワイヤーＷ２を巻装し、うず巻きバネのばね力によって常時巻き取る方向に常時付勢して内装した構造になっている。そして、付勢ワイヤーＷ２の先端を、後述するとおり、第１引戸Ａ上に搭載したワイヤー連結手段３５に連結してなる。 The mainspring driving means 30 is fixed to the upper frame portion of the door frame near the door. Although not shown in the drawings, the mainspring driving means 30 incorporates a spiral spring and a wire reel coaxially with the spiral spring, fixes the wire proximal end to the wire reel and winds the urging wire W2, and the spring of the spiral spring It is structured so that it is always energized in the direction of continuous winding by force. And the front-end | tip of the urging | biasing wire W2 is connected with the wire connection means 35 mounted on the 1st sliding door A so that it may mention later.

ワイヤー連結手段３５は、図４および図５に示すように、金属製の取付プレート２８と、樹脂製ブロック２９と、矩形板片状をなす永久磁石の第１磁性体ｍ１とからなる。取付プレート２８は、長尺な金属板を曲げ成形し、細長い一端側の取付板部２８ａおよび他端側の一段幅広な取付板部２８ｂと、両取付板部間の片側側縁から図中下向きにＬ板状に屈曲させたワイヤー係止片２８ｃとからなる。樹脂製ブロック２９は、片側側面２９ａに第１磁性体ｍ１の外形状に合わせて取付凹部２９ｂを形成し、取付凹部２９ｂに第１磁性体ｍ１を嵌め付けてねじ止めし、取付用長穴２９ｃに止めネジ３１を通して取付プレート２８の他側取付板部２８ｂの下面に固定している。そこで、ワイヤー連結手段３５は、図１でも示すように、第１磁性体ｍ１を前記戸枠の上枠部側に向けて、取付プレート２８の取付板部２８ａを、第１引戸Ａ上の第１取付金具ユニットａ１におけるレール取付金具１７と、スライドレール体ｒ１の戸先側インナーレール１１との間に挟んで止めネジ３２で挟着してなる。 As shown in FIGS. 4 and 5, the wire connecting means 35 includes a metal mounting plate 28, a resin block 29, and a first magnet m <b> 1 of a permanent magnet having a rectangular plate shape. The mounting plate 28 is formed by bending a long metal plate, and faces downward in the figure from one side of the elongated mounting plate 28a, the other wide mounting plate 28b, and one side edge between the mounting plates. And a wire locking piece 28c bent into an L plate shape. The resin block 29 has a mounting recess 29b formed on one side surface 29a in accordance with the outer shape of the first magnetic body m1, the first magnetic body m1 is fitted into the mounting recess 29b and screwed, and a mounting elongated hole 29c is formed. The fixing plate 31 is fixed to the lower surface of the other mounting plate portion 28b through the fixing screw 31. Therefore, as shown in FIG. 1, the wire connecting means 35 is arranged so that the first magnetic body m1 faces the upper frame portion side of the door frame, and the mounting plate portion 28a of the mounting plate 28 is placed on the first sliding door A. It is sandwiched between the rail mounting bracket 17 in the one mounting bracket unit a1 and the door end side inner rail 11 of the slide rail body r1, and is clamped with a set screw 32.

そして、斯かるワイヤー連結手段３５には、ワイヤー係止片２８ｃに付勢ワイヤーＷ２の先端を止めネジ３３で固着して連結している。従って、不図示の把手を持って、第２引戸Ｂを第１引戸Ａと共に図中右方向の開位置へと移動させると、付勢ワイヤーＷ２は、ゼンマイ式駆動手段３０のうず巻きバネに抗してワイヤーリールから繰り出される一方、把手から手を離すと、今度は、うず巻きバネの付勢力でワイヤーリールに巻き取られ、この巻き取り作用によって第２引戸Ｂを第１引戸Ａと共に開位置から強制的に図中左の閉止方向へスライドさせるようになっている。 The wire connecting means 35 is connected to the wire locking piece 28c by fixing the tip of the urging wire W2 with a set screw 33. Therefore, when the second sliding door B is moved together with the first sliding door A to the open position in the right direction in the figure by holding a handle (not shown), the urging wire W2 resists the spiral spring of the mainspring driving means 30. When the hand is released from the wire reel, it is wound around the wire reel by the urging force of the spiral spring, and the second sliding door B is forced from the open position together with the first sliding door A by this winding action. Therefore, it is slid in the closing direction on the left in the figure.

一方、本発明の引戸自閉装置Ｃにおいて、駆動制御手段４０は、前記戸枠の上枠部戸尻寄りに設置し、図１および図６に示すように、金属板を断面Ｌ状に曲げ成形して取付板部４１ａ・４１ｂを形成した固定プレート４１と、固定プレート４１の取付板部４１ａに片側（図中左側）から順に並べて組み付けた、端子台４２と、マイクロスイッチ４３と、ソレノイド４４と、回動カム４５を備えてなる。 On the other hand, in the sliding door self-closing device C of the present invention, the drive control means 40 is installed near the upper frame portion of the door frame and as shown in FIGS. 1 and 6, and the metal plate is bent into an L-shaped cross section. The fixed plate 41 formed with the mounting plate portions 41a and 41b by molding, and the terminal block 42, the micro switch 43, and the solenoid 44, which are assembled to the mounting plate portion 41a of the fixed plate 41 in order from one side (left side in the drawing). And a rotating cam 45 is provided.

固定プレート４１には、取付板部４１ａの他側に、幅方向に長い矩形な回動規制穴４１ｃが設けている。この回動規制穴４１ｃと隣接した位置には、前記連動ワイヤーＷ１のワイヤーリング２６を取り付ける取付軸５５が突設されている。端子台４２は、図７に概略的に示すように、ＡＣ電源４６に繋いだ通電制御盤４７を介し異常発生検知器としての火災検知器４８と電気的に接続されている。火災検知器４８は、例えば煙や温度を検出すると、異常検知信号を引戸閉鎖指令として出力し通電制御盤４７へ送信する。通電制御盤４７は、火災検知器４８からの異常検知信号の有無とマイクロスイッチ４３のオンオフに応じて判断し、ソレノイド４４を通電制御する。 The fixed plate 41 is provided with a rectangular rotation restricting hole 41c that is long in the width direction on the other side of the mounting plate portion 41a. A mounting shaft 55 for attaching the wire ring 26 of the interlocking wire W1 projects from a position adjacent to the rotation restricting hole 41c. As schematically shown in FIG. 7, the terminal block 42 is electrically connected to a fire detector 48 as an abnormality occurrence detector via an energization control panel 47 connected to an AC power source 46. When the fire detector 48 detects smoke or temperature, for example, it outputs an abnormality detection signal as a sliding door closing command and transmits it to the energization control panel 47. The energization control panel 47 determines whether there is an abnormality detection signal from the fire detector 48 and whether the microswitch 43 is on or off, and controls energization of the solenoid 44.

マイクロスイッチ４３は、ソレノイド４４と対向する片側側面に接点バネ４３ａ（図６参照）を有し、端子台４２と電気的に接続されている。ソレノイド４４は、図１および図６に示すように、マイクロスイッチ４３と対向する片側端部に、反対側のプランジャ５０と連動して出没自在に往復動する作動ピン５１を、接点バネ４４ａに対し常時圧接させた状態で突設してなる。そして、通電制御盤４８が異常検知信号を受信しない正常時は、ソレノイド４４は、通電制御盤４８から通電されず、図８（Ａ）に示すように、プランジャ５０が一段突出した固定状態にある一方、マイクロスイッチ４３は、一段引き込んだ作動ピン５１によって接点バネ４４ａを起されたオフの状態にある。 The micro switch 43 has a contact spring 43 a (see FIG. 6) on one side surface facing the solenoid 44 and is electrically connected to the terminal block 42. As shown in FIGS. 1 and 6, the solenoid 44 has an operating pin 51 that reciprocates freely in association with the plunger 50 on the opposite side at one end facing the micro switch 43 with respect to the contact spring 44a. It protrudes in a state where it is always in pressure contact. When the energization control panel 48 does not receive the abnormality detection signal, the solenoid 44 is not energized from the energization control panel 48 and is in a fixed state in which the plunger 50 protrudes one step as shown in FIG. On the other hand, the micro switch 43 is in an OFF state in which the contact spring 44a is raised by the actuating pin 51 pulled in one step.

次に、回動カム４５は、図６および図８（Ａ）に示すように、やや長手で厚肉な樹脂製のカム板５３を有する。カム板５３は、長さ方向一端に、その上側を一部切り欠いて段状に形成したプランジャ係合部５３ａを設ける一方、他端に、幅方向片側へ向けて一部を突出させて形成した係合突部５３ｂを設けると共に、係合突部５３ｂと反対の幅方向他側の側面５３ｃにおいて、係合突部５３ｂ寄りに磁石取付凹部５３ｄを設けてなる。 Next, as shown in FIGS. 6 and 8A, the rotating cam 45 has a resin cam plate 53 that is slightly long and thick. The cam plate 53 is provided with a plunger engaging portion 53a formed in a step shape by partially cutting away the upper side at one end in the length direction, and a portion protruding toward one side in the width direction at the other end. In addition to the engagement protrusion 53b, a magnet mounting recess 53d is provided near the engagement protrusion 53b on the side surface 53c on the other side in the width direction opposite to the engagement protrusion 53b.

更に、回動カム４５は、カム板５３の磁石取付凹部５３ｄに、矩形板片状をなす永久磁石の第２磁性体ｍ２を嵌め付けてねじ止めしている。駆動制御手段４０は、固定プレート４１の取付板部４１ａに、この回動カム４５を、プランジャ係合部５３ａの有する他端寄りにおいて、支軸５４を中心として回動可能に取り付ける。そして、斯かる回動カムを、係合突部５３ｂを回動規制穴４１ｃの上穴縁に係止させる一方、プランジャ係合部５３ａを、図示正常時は突出状態にあるソレノイド４４のプランジャ５０に係止させた水平な回転規制位置に保持してなる。斯かる構造の駆動制御手段４０は、回動カム４５側を図中手前の引戸Ａ・Ｂ側に向けて、前記戸枠の上枠部天井側に固定プレート４１の取付板部４１ｂをねじ止めする。そして、両引戸Ａ・Ｂを全開したときに、図８（Ａ）に示すように、第１引戸Ａ側の第１磁性体ｍ１と、回転規制位置にある回動カム４５側の第２磁性体ｍ２とが対向し、その間に僅かな隙間をあけて重なり合う位置で固定してなる。 Further, the rotating cam 45 is screwed by fitting a second magnetic body m2 of a permanent magnet having a rectangular plate shape into the magnet mounting recess 53d of the cam plate 53. The drive control means 40 attaches the rotation cam 45 to the attachment plate portion 41a of the fixed plate 41 so as to be rotatable around the support shaft 54 near the other end of the plunger engaging portion 53a. Then, the rotating cam engages the engaging projection 53b with the upper hole edge of the rotation restricting hole 41c, while the plunger engaging portion 53a is in the protruding state in the normal state in the plunger 50 of the solenoid 44. It is held at a horizontal rotation restricting position that is locked to the. The drive control means 40 having such a structure has the rotation cam 45 side directed toward the sliding doors A and B in the figure, and the mounting plate portion 41b of the fixing plate 41 is screwed to the upper frame portion ceiling side of the door frame. To do. When both sliding doors A and B are fully opened, as shown in FIG. 8A, the first magnetic body m1 on the first sliding door A side and the second magnetic on the rotating cam 45 side in the rotation restricting position. The body m2 faces and is fixed at a position where it overlaps with a slight gap therebetween.

さて、上述した構成の引戸自閉装置Ｃでは、正常時において、例えば全閉位置にある引戸Ａ・Ｂを開くときは、把手を持ち、第２引戸Ｂを開方向へ引いて、第１引戸Ａを連動ワイヤーＷ１を介して連動的にスライドさせると、付勢ワイヤーＷ２がゼンマイ式駆動手段３０からうず巻きバネに抗してワイヤーリールから繰り出され、両引戸Ａ・Ｂをそのまま開くことができる。このとき、必要に応じ、この開動作途中に把手から手を離すと、ゼンマイ式駆動手段３０のうず巻きバネの付勢力で付勢ワイヤーＷ２がワイヤーリールに巻き取られ、この巻き取り作用で第１引戸Ｂを引っ張り、連動ワイヤーＷ１を介して第２引戸Ｂも連動的に引っ張り込んで、両引戸Ａ・Ｂを、途中の開位置から閉止方向へ強制的にスライドさせて戸枠開口部を自動的に閉止する。 Now, in the sliding door self-closing device C having the above-described configuration, when opening the sliding doors A and B in the fully closed position, for example, hold the handle and pull the second sliding door B in the opening direction. When A is slid in an interlocked manner via the interlocking wire W1, the urging wire W2 is fed from the wire reel against the spiral spring from the mainspring driving means 30, and the sliding doors A and B can be opened as they are. At this time, if the hand is released from the handle during the opening operation as necessary, the urging wire W2 is wound around the wire reel by the urging force of the spiral spring of the mainspring driving means 30. Pulling the sliding door B, the second sliding door B is also pulled in conjunction with the interlocking wire W1, and the sliding doors A and B are forcibly slid from the halfway open position to the closing direction to automatically open the door frame opening. Close.

一方、開動作を途中で止めずに、戸枠開口部が全開する位置まで両引戸Ａ・Ｂを開くと、第１引戸Ａ上のワイヤー連結手段３５にある第１磁性体ｍ１と、駆動制御手段４０の回動カム４５にある第２磁性体ｍ２とが真向かいに対向する。すると、磁性体ｍ１・ｍ２が磁気的に吸引し合い、この吸引作用で両引戸Ａ・Ｂを全開位置で保持し、いったん停止させる。 On the other hand, when the sliding doors A and B are opened to the position where the door frame opening is fully opened without stopping the opening operation halfway, the first magnetic body m1 in the wire connecting means 35 on the first sliding door A and the drive control The second magnetic body m2 on the rotating cam 45 of the means 40 faces directly opposite. As a result, the magnetic bodies m1 and m2 are magnetically attracted to each other, and by this attraction action, the sliding doors A and B are held in the fully opened position, and are temporarily stopped.

そして、戸枠開口部を人などが通過して後、全開位置に停止した引戸Ａ・Ｂを閉止させる場合は、把手を持って第２引戸Ｂを押し、磁気的吸引力に抗して第２磁性体ｍ２から第１磁性体ｍ１を引き離して第２引戸Ｂを閉止方向へ引き寄せる。すると、その後は、把手から手を離せば、上述したと同様にゼンマイ式駆動手段３０の付勢ワイヤーＷ２の巻き取り作用で両引戸Ａ・Ｂを引っ張って連動的にスライドさせ、戸枠開口部を自動的に閉止する。 Then, when the sliding doors A and B stopped at the fully opened position after the person passes through the door frame opening, the second sliding door B is pushed with the handle to resist the magnetic attraction force. The first magnetic body m1 is pulled away from the second magnetic body m2, and the second sliding door B is pulled in the closing direction. Then, when the hand is released from the handle, the sliding doors A and B are pulled and slid in an interlocking manner by the winding action of the urging wire W2 of the mainspring driving means 30 as described above, and the door frame opening Is automatically closed.

他方、引戸Ａ・Ｂが全開位置で停止状態にあるときに、図７で示した火災検知器４８が異常を検知すると、異常検知信号を引戸閉鎖指令として出力し通電制御盤４７へ送信する。すると、通信制御盤４７は、引戸閉鎖指令に従ってソレノイド４４を通電する。ソレノイド４４は、通電されると励磁状態となり、図８（Ｂ）に示すように、プランジャ５０を引き込む一方、反対に作動ピン５１を突出させてマイクロスイッチ４３をオンする。すると同時に、回動カム４５は、プランジャ係合部５３ａがプランジャ５０から外れて回転規制状態が解除される。そのため、回動カム４５は、その長さ方向他端寄りにある支軸５４を支点として、その支軸４５より一端部側の重さで図中時計方向へ僅かに回動し、それに従って第１引戸Ａ側の第１磁性体ｍ１に対し、回動カム４５側の第２磁性体ｍ２がズレ動いて互いの磁気的吸引力が弱められ、それが契機となって、第１引戸Ａがゼンマイ式駆動手段３０のうず巻きバネの付勢力によって閉止方向へ移動し始める。すると、この第１引戸Ａの移動に従って、回動カム４５側の第２磁性体ｍ２に対し第１引戸Ａ側の第１磁性体ｍ１が更にズレ動き、このとき磁性体ｍ１・ｍ２間に発生する磁力の変化に引っ張られて回動カム４５は更に回動し、図８（Ｃ）および図９に示すように、係合突部５３ｂが回動規制穴４１ｃの下穴縁に当たる退避位置まで回動する。その結果、第１磁性体ｍ１と第２磁性体ｍ２は互いに離隔され、図８（Ｄ）および図１０に示すように、引戸Ａ・Ｂの停止状態が解除される。 On the other hand, if the fire detector 48 shown in FIG. 7 detects an abnormality when the sliding doors A and B are in the stopped state at the fully open position, an abnormality detection signal is output as a sliding door closing command and transmitted to the energization control panel 47. Then, the communication control panel 47 energizes the solenoid 44 in accordance with the sliding door closing command. When energized, the solenoid 44 is energized, and as shown in FIG. 8B, the plunger 50 is pulled in, while the operating pin 51 is projected to turn on the micro switch 43. At the same time, the rotation cam 45 is released from the rotation restricting state because the plunger engaging portion 53a is disengaged from the plunger 50. Therefore, the rotating cam 45 rotates slightly in the clockwise direction in the drawing with the weight at one end side from the supporting shaft 45 as a fulcrum with the supporting shaft 54 near the other end in the length direction as the fulcrum. With respect to the first magnetic body m1 on the first sliding door A side, the second magnetic body m2 on the rotating cam 45 side shifts and the mutual magnetic attraction force is weakened. It starts to move in the closing direction by the urging force of the spiral spring of the mainspring driving means 30. Then, according to the movement of the first sliding door A, the first magnetic body m1 on the first sliding door A side further shifts with respect to the second magnetic body m2 on the rotating cam 45 side, and at this time, it is generated between the magnetic bodies m1 and m2. The rotating cam 45 is further rotated by being pulled by the change in the magnetic force, and as shown in FIGS. 8C and 9, the engaging protrusion 53b reaches the retracted position where it hits the lower hole edge of the rotation restricting hole 41c. Rotate. As a result, the first magnetic body m1 and the second magnetic body m2 are separated from each other, and the stopped state of the sliding doors A and B is released as shown in FIG. 8D and FIG.

そのように停止状態が解除されると、引戸Ａ・Ｂは、上述したと同様に、ゼンマイ式駆動手段３０の付勢ワイヤーＷ２の巻き取り作用で両引戸Ａ・Ｂを引っ張って連動的にスライドさせ、戸枠開口部を自動的に全閉し、火災による延焼や煙の流出入を防止する。なお、この異常発生時に、上述のようにソレノイド４４の作動ピン５１に押されてマイクロスイッチ４３がオンしたとき、それに基づいて通電制御盤４７では、引戸自閉装置Ｃで引戸Ａ・Ｂを自動閉止させるために作動したことを確認し、これ以上のソレノイド４４への通電を遮断する。 When the stop state is released in such a manner, the sliding doors A and B slide in conjunction with each other by pulling the sliding doors A and B by the winding action of the urging wire W2 of the mainspring driving means 30 as described above. And automatically close the door frame opening to prevent the spread of fire and the inflow and outflow of smoke. When this abnormality occurs, when the micro switch 43 is turned on by being pushed by the operating pin 51 of the solenoid 44 as described above, the energization control panel 47 automatically controls the sliding doors A and B by the sliding door self-closing device C. After confirming that the actuator has been operated to close, energization of the solenoid 44 beyond that is cut off.

ところで、図示例の引戸自閉装置Ｃは、第１磁性体ｍ１と第２磁性体ｍ２の双方が永久磁石であったが、本発明では、第１磁性体ｍ１と第２磁性体ｍ２のいずれか一方が永久磁石からなり、他方を鉄片などの磁性体を用いて構成することもできる。 By the way, in the sliding door self-closing device C in the illustrated example, both the first magnetic body m1 and the second magnetic body m2 are permanent magnets. In the present invention, either the first magnetic body m1 or the second magnetic body m2 is used. One of them can be made of a permanent magnet, and the other can be made of a magnetic material such as an iron piece.

本発明の一例である引戸自閉装置を適用した引戸構造体の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 sliding door structure which applied the sliding door self-closing apparatus which is an example of this invention. その引戸構造体の全体を示す分解斜視図である。It is an exploded perspective view showing the whole sliding door structure. スライドレール装置の構造を示す端面図である。It is an end view which shows the structure of a slide rail apparatus. ワイヤー連結手段の分解斜視図である。It is a disassembled perspective view of a wire connection means. 引戸全開時に駆動制御手段で引戸を停止状態で保持した引戸自閉装置の要部を示す斜視図である。It is a perspective view which shows the principal part of the sliding door self-closing apparatus which hold | maintained the sliding door in the stop state by the drive control means at the time of sliding door full open. 図５における駆動制御手段を別の角度から見て示す斜視図である。It is a perspective view which shows the drive control means in FIG. 5 from another angle. 引戸自閉装置と火災検知器の電気的接続構成を説明するブロック図である。It is a block diagram explaining the electrical connection structure of a sliding door self-closing apparatus and a fire detector. 駆動制御手段の動作を段階的に説明する正面図である。It is a front view explaining operation | movement of a drive control means in steps. 駆動制御手段を、回動カムが退避位置に回動した状態において示す斜視図である。It is a perspective view which shows a drive control means in the state which the rotation cam rotated to the retracted position. 駆動制御手段で引戸の停止状態を解除した状態において、引戸自閉装置の要部を示す斜視図である。It is a perspective view which shows the principal part of a sliding door self-closing apparatus in the state which canceled the stop state of the sliding door by the drive control means. 従来の引戸自閉装置で全開した引戸を停止させた状態を示す部分正面図である。It is a partial front view which shows the state which stopped the sliding door fully opened by the conventional sliding door self-closing apparatus. その従来の引戸自閉装置の要部構造を示す正面図である。It is a front view which shows the principal part structure of the conventional sliding door self-closing apparatus.

符号の説明Explanation of symbols

Ａ第１引戸
Ｂ第２引戸
Ｃ引戸自閉装置
Ｒスライドレール装置
Ｗ１連動ワイヤー
Ｗ２付勢ワイヤー
ｍ１第１磁性体
ｍ２第２磁性体
ｒ１・ｒ２スライドレール体
１０アウターレール
１１インナーレール
１２リテーナ
１４ボール
３０ゼンマイ式駆動手段
４０駆動制御手段
４４ソレノイド
４５回動カム
４８火災検知器（異常発生検知器）
５０プランジャ
５３ａプランジャ係合部
A 1st sliding door B 2nd sliding door C Sliding door self-closing device R Slide rail device W1 Interlocking wire W2 Energizing wire m1 1st magnetic body m2 2nd magnetic body r1 and r2 Slide rail body 10 Outer rail 11 Inner rail 12 Retainer 14 Ball 30 Spring-type drive means 40 Drive control means 44 Solenoid 45 Rotating cam 48 Fire detector (abnormality detector)
50 Plunger 53a Plunger engaging portion

Claims

戸枠の上枠部に固定するアウターレールに対し引戸上に組み付けるインナーレールをリテーナで保持した多数のボールを介して摺動自在に係合させた構造のスライドレール体を介して開閉方向にスライド自在に前記上枠部に吊設する引戸の自閉装置であって、
引戸が全開すると、その全開位置で引戸を保持していったん停止させ、非全開の開位置にあるときは、その都度、引戸を自動的に閉止させると共に、異常発生時に引戸が全開位置で停止状態にあるときは、異常発生検知器と連動して引戸を閉止させる引戸自閉装置において、
前記インナーレールに組み付ける引戸の上端側に、前記戸枠の上枠部に向けて取り付ける第１磁性体と、引戸が全開位置にあるときに前記第１磁性体と対向する位置の前記戸枠の上枠部に設置して引戸の自閉動作をコントロールする駆動制御手段を備え、
該駆動制御手段は、
励磁動作に応じてプランジャを作動させるソレノイドと、
前記異常発生検知器から異常検知信号を受信しない正常時は前記プランジャに一端のプランジャ係合部を係止した回転規制位置で保持される一方、異常検知信号を受信した異常発生時に前記ソレノイドが励磁動作すると、そのプランジャから前記プランジャ係合部が外れて回動可能になるように軸支した回動カムとを備え、
該回動カムには、それが回転規制位置にあるときに引戸が全開されると、真向かいにある第１磁性体との磁気的吸引作用により引戸を全開位置の停止状態で保持する一方、異常発生時に前記回動カムが回動すると、それに従って前記第１磁性体に対しズレ動いて互いの磁気吸引力が弱められ引戸の停止状態を解除する第２磁性体を付設し、それら第１および第２磁性体の双方又は一方が永久磁石からなることを特徴とする、引戸自閉装置。 Slides in the open / close direction via a slide rail body with a structure in which an inner rail assembled on the sliding door is slidably engaged with a plurality of balls held by a retainer with respect to an outer rail fixed to the upper frame portion of the door frame. A self-closing device for a sliding door that is freely suspended from the upper frame part,
When the sliding door is fully opened, the sliding door is held and stopped once in the fully opened position.When the sliding door is in the non-fully opened position, the sliding door is automatically closed each time, and the sliding door is stopped in the fully opened position when an abnormality occurs. In the sliding door self-closing device that closes the sliding door in conjunction with the abnormality occurrence detector,
A first magnetic body attached to an upper end side of the sliding door to be assembled to the inner rail toward the upper frame portion of the door frame ; and the door frame at a position facing the first magnetic body when the sliding door is in a fully open position . Drive control means installed on the upper frame to control the self-closing operation of the sliding door,
The drive control means includes
A solenoid that activates the plunger according to the excitation operation;
When the abnormality detection signal is not received from the abnormality occurrence detector, it is held at a rotation restricting position where the plunger engaging portion at one end is locked to the plunger, while the solenoid is excited when an abnormality occurs when the abnormality detection signal is received. A rotating cam that is pivotally supported so that the plunger engaging portion is disengaged from the plunger and is rotatable when operated.
The the pivoting cam, when it sliding door is fully opened when in the rotation restriction position, while held in the stopped state of the fully open position the sliding door by magnetic attraction acting between the first magnetic body is directly opposite, abnormal When the rotating cam is rotated at the time of occurrence, a second magnetic body is attached to move the first magnetic body in accordance with the rotation and weaken the mutual magnetic attraction force to release the sliding door stop state. A sliding door self-closing device characterized in that both or one of the second magnetic bodies is made of a permanent magnet.