JPH09301159A - Door opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily draw out the body or a baggage clamped by a door by lessening the force of pressing the door in the closing direction immediately before the door is closed. SOLUTION: At the time of closing a door, compressed air is fed to a closing side supply and discharge port 15 of an air cylinder 4 through a closing side supply and discharge port 15. Immediately before a piston rod 7 of the air cylinder 4 reaches the closing completion position, a switching valve 27 is switched and a pressure reducing valve 30 is connected to the midway of the closing side supply and discharge pipe 21. As a result, the pressure of compressed air fed into the above closing side supply and discharge port 15 is lowered to weaken the force of pressing the door in the closing direction.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明に係る扉開閉装置は、旅
客用の乗降口を遠隔操作により開閉する為に、鉄道車両
の乗降口に組み込んだ状態で利用する。BACKGROUND OF THE INVENTION The door opening / closing device according to the present invention is used in a state in which it is incorporated in an entrance / exit of a railway vehicle in order to open / close a passenger entrance / exit by remote control.

【０００２】[0002]

【従来の技術】鉄道車両の乗降口は、圧縮空気の給排に
より伸縮するアクチュエータ（エアシリンダ）により水
平移動する扉によって開閉する。アクチュエータが伸縮
する速度は全ストロークに亙って均一ではなく、伸長し
切る直前及び収縮し切る直前には緩徐になる。従って、
上記扉の移動速度は、上記乗降口を開放し切る直前、及
びこの乗降口を閉鎖し切る直前に遅くなる。この様にア
クチュエータの伸縮速度を遅くする事は、上記アクチュ
エータの伸縮量を検出するマイクロスイッチ等のセンサ
からの信号に基づき、上記アクチュエータに圧縮空気を
給排する為の制御回路が圧縮空気の給排量を切り換える
事により調節する。2. Description of the Related Art An entrance / exit of a railway vehicle is opened / closed by a door which horizontally moves by an actuator (air cylinder) which expands and contracts by supplying and discharging compressed air. The speed at which the actuator expands and contracts is not uniform over the entire stroke and becomes slow just before it fully extends and just before it fully contracts. Therefore,
The moving speed of the door becomes slow just before the door is completely opened and immediately before the door is closed. Decreasing the expansion / contraction speed of the actuator in this way means that the control circuit for supplying / discharging compressed air to / from the actuator supplies compressed air based on a signal from a sensor such as a micro switch for detecting the expansion / contraction amount of the actuator. Adjust by switching the emissions.

【０００３】上述の様に扉の移動速度を、上記乗降口を
開放し切る直前及び閉鎖し切る直前に遅くする事は、扉
の開閉に伴う衝撃を緩和する他、閉鎖時に乗降客の身体
や手荷物等が扉に挟まれる事を防止する為に役立つ。As described above, slowing down the moving speed of the door immediately before opening and closing the entrance and exit alleviates the shock caused by opening and closing the door, as well as the body of the passengers and passengers at the time of closing. It is useful for preventing baggage from being caught in the door.

【０００４】[0004]

【発明が解決しようとする課題】従来の扉開閉装置の場
合、乗降口を閉じるべく扉を閉鎖方向に移動させる際
に、閉鎖し切る直前に扉の移動速度を緩徐にするが、こ
の扉を閉鎖方向に移動させる力の大きさは変わらない。
具体的には、アクチュエータに送り込む圧縮空気の圧力
を変える事なく、このアクチュエータから空気を排出す
る排気流路の途中に絞り弁を組み入れる事により、上記
アクチュエータの伸縮速度を遅くする。In the case of the conventional door opening / closing device, when the door is moved in the closing direction to close the entrance / exit, the moving speed of the door is slowed just before the door is completely closed. The magnitude of the force moving in the closing direction does not change.
Specifically, the expansion / contraction speed of the actuator is slowed by incorporating a throttle valve in the middle of the exhaust flow path for discharging the air from the actuator without changing the pressure of the compressed air sent to the actuator.

【０００５】この為、閉まりかけた扉に乗降客の身体や
手荷物が挟まれた場合には、この身体や手荷物を抜き取
りにくくなる。従って、一度身体や手荷物が挟まれた場
合には、車掌が扉を開く動作を行なわなければならない
等、上記身体や手荷物を抜き取る為に要する時間が長く
なる。都会の通勤電車等では、この様な時間の積み重ね
がダイヤを乱す原因となる。この為、扉に挟まれた身体
や手荷物を簡単に抜き取る事ができ、しかも扉が完全に
閉鎖された状態では、この扉を閉鎖状態に維持する力を
十分に大きくする構造の実現が望まれる。本発明の扉開
閉装置は、この様な事情に鑑みて発明したものである。For this reason, if the passenger's body or baggage is caught in the door that is closing, it becomes difficult to remove the body or baggage. Therefore, once the body or baggage is caught, the conductor has to open the door, and the time required to remove the body or baggage becomes long. In urban commuter trains, etc., such accumulation of time causes the schedule to be disturbed. For this reason, it is desired to realize a structure in which the body and baggage sandwiched between the doors can be easily pulled out, and when the door is completely closed, the force for maintaining the door in the closed state is sufficiently large. . The door opening / closing device of the present invention was invented in view of such circumstances.

【０００６】[0006]

【課題を解決するための手段】本発明の扉開閉装置は、
従来から知られている扉開閉装置と同様に、水平移動す
る事により開口部を開閉する扉と、圧縮空気の給排に基
づく伸縮により上記扉を水平移動させるアクチュエータ
と、このアクチュエータへの圧縮空気の給排を制御する
為の制御回路とを備える。特に、本発明の扉開閉装置を
構成する上記制御回路は、上記開口部を閉じるべく上記
扉を水平移動させた場合に、上記開口部を閉鎖し切る直
前に上記アクチュエータに供給する圧縮空気の圧力を低
下させて上記扉を閉鎖位置に移動させた後、上記アクチ
ュエータに送り込む圧縮空気の圧力を上昇させる機能を
有する。The door opening and closing device according to the present invention comprises:
Similar to the conventionally known door opening and closing device, a door that opens and closes an opening by moving horizontally, an actuator that horizontally moves the door by expansion and contraction based on the supply and discharge of compressed air, and compressed air to this actuator And a control circuit for controlling the supply and discharge of the. In particular, the control circuit that constitutes the door opening / closing device of the present invention, when the door is horizontally moved to close the opening, the pressure of the compressed air supplied to the actuator immediately before the opening is completely closed. Is lowered to move the door to the closed position, and then the pressure of the compressed air sent to the actuator is increased.

【０００７】[0007]

【作用】上述の様に構成される本発明の扉開閉装置の場
合には、扉が開口部を閉鎖し切る直前に、アクチュエー
タがこの扉を閉鎖方向に押圧する力が低下する。この結
果、乗降客の身体や手荷物が扉に挟まれた場合に、これ
ら身体や手荷物を抜き取る作業を容易に行なえる。In the door opening / closing device of the present invention constructed as described above, the force with which the actuator presses the door in the closing direction decreases immediately before the door completely closes the opening. As a result, when the passenger's body or baggage is caught in the door, it is possible to easily remove the body or baggage.

【０００８】[0008]

【発明の実施の形態】図１〜３は、本発明の実施の形態
の１例を示している。本例は、同一平面内に設けられた
１対の扉１ａ、１ｂを互いに逆方向に水平移動させる事
により開口部である乗降口（図示省略）を開閉する、所
謂両開き式の扉装置に、本発明を適用したものである。
上記扉１ａ、１ｂは、それぞれの上端縁部に支持ブラケ
ット２、２を介して回転自在に支持された滑車３、３に
より、上記乗降口の上方に水平方向に配設された吊り下
げレール（図示省略）に吊り下げられて、次述するアク
チュエータの伸縮に基づいて水平移動する。アクチュエ
ータであるエアシリンダ４は、伸長に基づいて上記１対
の扉１ａ、１ｂを開放方向（互いに離れる方向）に移動
させ、収縮に基づいて閉鎖方向（互いに近づく方向）に
移動させる。1 to 3 show an example of an embodiment of the present invention. This example is a so-called double door type door device that opens and closes an entrance (an illustration is omitted) that is an opening by horizontally moving a pair of doors 1a and 1b provided in the same plane in mutually opposite directions. The present invention is applied.
The doors 1a and 1b are suspended by rails 3 and 3 which are rotatably supported on the upper edge portions of the doors 1 and 2 via support brackets 2 and 2. It is hung up (not shown) and moves horizontally based on the expansion and contraction of the actuator described below. The air cylinder 4, which is an actuator, moves the pair of doors 1a and 1b in the opening direction (directions away from each other) based on expansion, and moves them in the closing direction (directions approaching each other) based on contraction.

【０００９】単一のエアシリンダ４により１対の扉１
ａ、１ｂを、互いに同期して反対方向に移動させるべ
く、図示の例では、これら両扉１ａ、１ｂを、無端ベル
ト５により連動させている。先ず、上記エアシリンダ４
とこの無端ベルト５とによる、上記１対の扉１ａ、１ｂ
の駆動機構に就いて説明する。上記エアシリンダ４は、
上記乗降口の上方に水平方向に配設固定されたシリンダ
筒６と、このシリンダ筒６の両端部への圧縮空気の給排
に基づいてこのシリンダ筒６から出入りするピストンロ
ッド７とを備える。即ち、上記シリンダ筒６の一端部
（図１〜２の左端部）を気密に貫通した上記ピストンロ
ッド７の基端部は、上記シリンダ筒６に気密に嵌装した
ピストン８（図１参照）に結合されて、このピストン８
の動きに応じて上記シリンダ筒６から出入りし、上記エ
アシリンダ４の全長を伸縮させる。A pair of doors 1 by a single air cylinder 4.
In the illustrated example, both doors 1a and 1b are interlocked by an endless belt 5 in order to move a and 1b in opposite directions in synchronization with each other. First, the air cylinder 4
And the pair of doors 1a and 1b by the endless belt 5
The drive mechanism of will be described. The air cylinder 4 is
The cylinder cylinder 6 is arranged and fixed in the horizontal direction above the entrance / exit, and the piston rod 7 that moves in and out of the cylinder cylinder 6 based on the supply and discharge of compressed air to and from both ends of the cylinder cylinder 6. That is, the base end portion of the piston rod 7 that airtightly penetrates one end portion (the left end portion in FIGS. 1 and 2) of the cylinder cylinder 6 has a piston 8 (see FIG. 1) fitted in the cylinder cylinder 6 airtightly. Combined with this piston 8
According to the movement of the air cylinder 4, the air cylinder 4 is moved in and out to expand and contract the entire length of the air cylinder 4.

【００１０】上記ピストンロッド７の先端部は、一方
（図２の左方）の扉１ａの上端縁部に固定した駆動側押
し引きブラケット９に結合している。一方、上記無端ベ
ルト５は、やはり乗降口の上方に互いに間隔をあけて回
転自在に支持された、１対のプーリ１０、１０に掛け渡
している。そして、上記駆動側押し引きブラケット９の
上端部にその一端（図２の左端）を結合した駆動側押し
引き腕１１の他端（図２の右端）を、上記無端ベルト５
の上辺５ａに結合している。又、上記無端ベルト５の下
辺５ｂにその一端（図２の左端）を結合した従動側押し
引き腕１２の他端（図２の右端）を、他方（図２の右
方）の扉１ｂの上端縁部に固定した従動側押し引きブラ
ケット１３に結合している。The tip portion of the piston rod 7 is connected to a driving side push-pull bracket 9 fixed to the upper edge of one (left side in FIG. 2) door 1a. On the other hand, the endless belt 5 is stretched around a pair of pulleys 10 and 10 which are also rotatably supported above the entrance and exit with a space therebetween. Then, the other end (right end in FIG. 2) of the drive-side push-pull arm 11 having one end (left end in FIG. 2) coupled to the upper end of the drive-side push-pull bracket 9 is connected to the endless belt 5
Is connected to the upper side 5a. Further, the other end (right end in FIG. 2) of the driven side push / pull arm 12 having one end (left end in FIG. 2) coupled to the lower side 5b of the endless belt 5 is connected to the other (right side in FIG. 2) of the door 1b. It is connected to the driven-side push-pull bracket 13 fixed to the upper edge.

【００１１】１対の扉１ａ、１ｂの駆動機構は上述の様
に構成される為、次の様にして、これら１対の扉１ａ、
１ｂを開閉する。先ず、乗降口を開放すべく、上記１対
の扉１ａ、１ｂを互いに離れる方向に移動させる際に
は、上記エアシリンダ４を伸長させるべく、上記シリン
ダ筒６からピストンロッド７を突出させる。この結果、
一方の扉１ａが開放方向（図２の左方向）に移動すると
同時に、上記駆動側押し引き腕１１に引かれて上記無端
ベルト５が、図２で反時計方向に循環する。この結果、
従動側押し引き腕１２に押されて他方の扉１ｂが、開放
方向（図２の右方向）に移動して、上記乗降口を開放す
る。これに対して、乗降口を閉鎖すべく、上記１対の扉
１ａ、１ｂを互いに近づく方向に移動させる際には、上
記エアシリンダ４を収縮させるべく、上記シリンダ筒６
にピストンロッド７を引き込む。この結果、上述の場合
と逆の動作により、上記１対の扉１ａ、１ｂがそれぞれ
閉鎖方向に移動して、上記乗降口を閉鎖する。Since the drive mechanism for the pair of doors 1a, 1b is constructed as described above, the pair of doors 1a, 1b are
Open and close 1b. First, when the pair of doors 1a and 1b are moved away from each other to open the entrance / exit, the piston rod 7 is projected from the cylinder cylinder 6 to extend the air cylinder 4. As a result,
At the same time that one door 1a moves in the opening direction (leftward in FIG. 2), the endless belt 5 is pulled by the drive-side push / pull arm 11 and circulates in the counterclockwise direction in FIG. As a result,
The other door 1b is pushed by the driven push-pull arm 12 and moves in the opening direction (rightward in FIG. 2) to open the entrance / exit. On the other hand, when the pair of doors 1a and 1b are moved toward each other in order to close the entrance / exit, the cylinder cylinder 6 is contracted in order to contract the air cylinder 4.
Pull the piston rod 7 into. As a result, the pair of doors 1a and 1b respectively move in the closing direction by the operation opposite to the above case to close the entrance / exit.

【００１２】次に、本発明の特徴である、上記エアシリ
ンダ４の伸縮速度を制御する為の制御回路（空気制御回
路）に就いて、図１により説明する。上記エアシリンダ
４を構成するシリンダ筒６の一端部（図１の右端部）に
は開放側給排ポート１４を、他端部（図１の左端部）に
は閉鎖側給排ポート１５を、それぞれ設けている。この
うちの開放側給排ポート１４は、圧縮空気の送り込みに
基づいて上記エアシリンダ４を、上記１対の扉１ａ、１
ｂを開放させるべく伸長させる。これに対して、これら
両扉１ａ、１ｂを閉鎖すべく上記エアシリンダ４を収縮
させる際には、空気を排出させる。又、上記閉鎖側給排
ポート１５は、圧縮空気の送り込みに基づいて上記エア
シリンダ４を、上記１対の扉１ａ、１ｂを閉鎖すべく収
縮させ、これら両扉１ａ、１ｂを開放すべく上記エアシ
リンダ４を伸長させる際には空気を排出させる。Next, a control circuit (air control circuit) for controlling the expansion / contraction speed of the air cylinder 4, which is a feature of the present invention, will be described with reference to FIG. An opening-side supply / discharge port 14 is provided at one end (right end in FIG. 1) of the cylinder cylinder 6 constituting the air cylinder 4, and a closing-side supply / discharge port 15 is provided at the other end (left end in FIG. 1). Each is provided. Of these, the open side supply / discharge port 14 is configured such that the air cylinder 4 is connected to the pair of doors 1a and 1a based on the feeding of compressed air.
Stretch to open b. On the other hand, when the air cylinder 4 is contracted to close both the doors 1a and 1b, air is discharged. Further, the closing side supply / discharge port 15 contracts the air cylinder 4 to close the pair of doors 1a and 1b based on the feeding of compressed air and opens the both doors 1a and 1b. Air is discharged when the air cylinder 4 is extended.

【００１３】これら開放側、閉鎖側両給排ポート１４、
１５を通じての上記シリンダ筒６への圧縮空気の給排を
制御する為の制御回路は、給気管１６及び排気管１７を
有する。このうちの給気管１６の一端（図１の下端）
は、コンプレッサ等の圧縮空気源１８に通じさせてい
る。これに対して上記排気管１７の一端（図１の下端）
は、消音器１９を介して大気に開放している。Both the open side and closed side supply / discharge ports 14,
The control circuit for controlling the supply / discharge of compressed air to / from the cylinder cylinder 6 through 15 has an air supply pipe 16 and an exhaust pipe 17. One end of the air supply pipe 16 (lower end in FIG. 1)
Communicates with a compressed air source 18 such as a compressor. On the other hand, one end of the exhaust pipe 17 (lower end in FIG. 1)
Is open to the atmosphere through the silencer 19.

【００１４】又、上記制御回路は、開放側給排管２０と
閉鎖側給排管２１とを有する。このうちの開放側給排管
２０は、一端（図１の上端）を上記開放側給排ポート１
４に通じさせている。又、上記閉鎖側給排管２１は、一
端（図１の上端）を上記閉鎖側給排ポート１５に通じさ
せている。そして、上記給気管１６及び排気管１７の他
端（それぞれ図１の上端）と、上記開放側、閉鎖側両給
排管２０、２１の他端（それぞれ図１の下端）との間
に、開閉操作弁２２を設けている。この開閉操作弁２２
は、上記給気管１６と排気管１７との何れか一方の管を
上記開放側給排管２０と閉鎖側給排管２１との何れか一
方の管に通じさせると同時に、給気管１６と排気管１７
との他方の管を上記開放側給排管２０と閉鎖側給排管２
１との他方の管に通じさせて、上記開放側、閉鎖側両給
排ポート１４、１５を通じての空気の給排状態を切り換
える。図示の例の場合に上記開閉操作弁２２は、非通電
時に図示の状態にあって、上記給気管１６と閉鎖側給排
管２１とを通じさせると同時に、上記排気管１７と上記
開放側給排管２０とを通じさせる。反対に、通電時には
図示の状態とは逆に切り換わって、上記給気管１６と開
放側給排管２０とを通じさせると同時に、上記排気管１
７と上記閉鎖側給排管２１とを通じさせる。Further, the control circuit has an open side supply / discharge pipe 20 and a close side supply / discharge pipe 21. Of these, the open side supply / discharge pipe 20 has one end (upper end in FIG. 1) at the open side supply / discharge port 1
I am familiar with 4. The closing side supply / discharge pipe 21 has one end (upper end in FIG. 1) communicating with the closing side supply / discharge port 15. Then, between the other ends of the air supply pipe 16 and the exhaust pipe 17 (upper ends in FIG. 1) and the other ends of the open-side and closed-side supply / discharge pipes 20 and 21 (lower ends in FIG. 1), respectively, An opening / closing operation valve 22 is provided. This open / close operation valve 22
Is connected to either the open-side supply / discharge pipe 20 or the closed-side supply / discharge pipe 21, and at the same time the supply pipe 16 and the exhaust pipe 17 are connected to each other. Tube 17
The other pipe is connected to the open side supply / discharge pipe 20 and the closed side supply / discharge pipe 2
The air supply and discharge states of the air through the supply and discharge ports 14 and 15 on both the open side and the closed side are switched by communicating with the other pipe. In the case of the illustrated example, the opening / closing operation valve 22 is in the illustrated state when not energized, and is made to pass through the air supply pipe 16 and the closing side supply / discharge pipe 21, and at the same time, the exhaust pipe 17 and the opening side supply / discharge are performed. Through the tube 20. On the contrary, at the time of energizing, the state is switched to the opposite of the state shown in the figure, and the air supply pipe 16 and the open side supply / discharge pipe 20 are made to pass through, and at the same time, the exhaust pipe 1
7 and the closed side supply / discharge pipe 21.

【００１５】上記開放側、閉鎖側両給排管２０、２１の
中間部には、それぞれ絞り弁と逆止弁とを互いに並列に
組み合わせた減速弁ユニット２３ａ、２３ｂを設けてい
る。これら各減速弁ユニット２３ａ、２３ｂは、それぞ
れ前記圧縮空気源１８から上記開放側、閉鎖側各給排ポ
ート１４、１５に圧縮空気を送り込む際には逆止弁を開
放する事により、圧縮空気の送り込みが円滑に行なわれ
る様にする。これに対して、上記開放側、閉鎖側各給排
ポート１４、１５から空気を排出する際には上記逆止弁
を閉じて、空気の排出速度を制御する。この様な各減速
弁ユニット２３ａ、２３ｂは、前記各扉１ａ、１ｂの開
閉速度が速くなり過ぎる事を防止する為に設けている。
又、上記閉鎖側給排管２１の途中で、上記減速弁ユニッ
ト２３ｂと閉鎖側給排ポート１５との間部分には、非常
開放弁２４を設けている。この非常開放弁２４は、通常
状態では図示の位置にあるが、事故等の非常時には乗客
等の操作に基づき図示の状態とは逆に切り換えられて、
上記閉鎖側給排ポート１５を大気に開放し、扉１ａ、１
ｂを手動により開放可能な状態とする。At the intermediate portions of the open-side and closed-side supply / discharge pipes 20 and 21, there are provided reduction valve units 23a and 23b in which a throttle valve and a check valve are combined in parallel with each other. These deceleration valve units 23a and 23b open the check valves when sending compressed air from the compressed air source 18 to the open-side and closed-side supply / discharge ports 14 and 15, respectively. Make sure the delivery is smooth. On the other hand, when air is discharged from the open-side and close-side supply / discharge ports 14 and 15, the check valve is closed to control the air discharge speed. Such deceleration valve units 23a and 23b are provided to prevent the opening and closing speeds of the doors 1a and 1b from becoming too fast.
An emergency opening valve 24 is provided in the middle of the closing-side supply / discharge pipe 21 between the deceleration valve unit 23b and the closing-side supply / discharge port 15. The emergency release valve 24 is located at the position shown in the normal state, but in an emergency such as an accident, the emergency open valve 24 is switched to the opposite state based on the operation of the passenger or the like.
The closing side supply / discharge port 15 is opened to the atmosphere, and the doors 1a, 1
b is manually opened.

【００１６】又、上記開放側給排管２０の途中で、上記
減速弁ユニット２３ａと上記開閉操作弁２２との間部分
には、減速用絞り弁２５と第一の開放側バイパス管２６
とを、互いに並列に設けている。このうちの減速用絞り
弁２５は、上記減速弁ユニット２３ａと同様に、絞り弁
と逆止弁とを互いに並列に組み合わせて成り、この逆止
弁は、上記閉鎖側給排ポート１５に向け圧縮空気を供給
する場合にのみ開放される。又、上記第一の開放側バイ
パス管２６の中間部には、後述する切換弁２７が直列に
組み込まれており、上記第一の開放側バイパス管２６
は、この切換弁２７により開閉される。In addition, in the middle of the opening-side supply / discharge pipe 20, a reduction throttle valve 25 and a first opening-side bypass pipe 26 are provided between the reduction valve unit 23a and the opening / closing operation valve 22.
And are provided in parallel with each other. The throttle valve 25 for deceleration is composed of a throttle valve and a check valve combined in parallel with each other, like the deceleration valve unit 23a, and the check valve is compressed toward the closing side supply / discharge port 15. It is opened only when supplying air. A switching valve 27, which will be described later, is incorporated in series at an intermediate portion of the first open side bypass pipe 26, and the first open side bypass pipe 26 is
Is opened and closed by the switching valve 27.

【００１７】又、上記閉鎖側給排管２１の中間部で、前
記開閉操作弁２２と上記非常開放弁２４との間には、第
一の閉鎖側バイパス管２８と第二の閉鎖側バイパス管２
９とを、互いに、且つ上記閉鎖側給排管２１に対して並
列に設けている。そして、このうちの第一の閉鎖側バイ
パス管２８の途中に、減圧弁３０と、前記閉鎖側給排ポ
ート１５に向けてのみ圧縮空気を流す逆止弁３１とを、
互いに直列に設けている。又、上記第二の閉鎖側バイパ
ス管２９には、上記閉鎖側給排ポート１５から空気を排
出する場合にのみ開く逆止弁３２を設けている。A first closed side bypass pipe 28 and a second closed side bypass pipe are provided between the open / close operation valve 22 and the emergency open valve 24 at an intermediate portion of the closed side supply / discharge pipe 21. Two
9 and 9 are provided in parallel to each other and to the closing side supply / discharge pipe 21. A pressure reducing valve 30 and a check valve 31 for flowing compressed air only toward the closing side supply / discharge port 15 are provided in the middle of the first closing side bypass pipe 28.
They are provided in series with each other. Further, the second closing side bypass pipe 29 is provided with a check valve 32 that opens only when air is discharged from the closing side supply / discharge port 15.

【００１８】又、前記エアシリンダ４を構成するピスト
ンロッド７の近傍には切換弁２７を設け、この切換弁２
７により、上記ピストンロッド７のストロークに応じ
て、上記減速用絞り弁２５と上記減圧弁３０との接続状
態を切り換え自在としている。即ち、上記ピストンロッ
ド７の先端部に、図２に示す様に、ドッグスリーブと呼
ばれるカム筒３３を外嵌固定し、このカム筒３３の変位
に応じて上記切換弁２７を、図１に示した３通りの状態
の何れかに切り換え自在としている。即ち、上記カム筒
３３の外周面には、上記切換弁２７の切り換えを行なわ
せる為のロッド４７（図１参照）の先端部に枢支したロ
ーラ３４（図２参照）を当接させており、上記カム筒３
３の外周面に当接したこのローラ３４により、上記ロッ
ド４７を軸方向（図１の左右方向、図２の上下方向）に
変位させる事で、上記切換弁２７を何れかの状態に切り
換え自在としている。A switching valve 27 is provided in the vicinity of the piston rod 7 constituting the air cylinder 4, and the switching valve 2
7, the connection state between the deceleration throttle valve 25 and the pressure reducing valve 30 can be switched according to the stroke of the piston rod 7. That is, as shown in FIG. 2, a cam cylinder 33 called a dog sleeve is externally fitted and fixed to the tip portion of the piston rod 7, and the switching valve 27 is shown in FIG. 1 according to the displacement of the cam cylinder 33. In addition, it can be switched to any of the three states. That is, the roller 34 (see FIG. 2) pivotally supported on the tip of the rod 47 (see FIG. 1) for switching the switching valve 27 is brought into contact with the outer peripheral surface of the cam barrel 33. , The cam cylinder 3
By this roller 34 that is in contact with the outer peripheral surface of 3, the rod 47 can be switched to any state by displacing the rod 47 in the axial direction (left and right direction in FIG. 1, up and down direction in FIG. 2). I am trying.

【００１９】先ず、扉１ａ、１ｂが開放方向に変位して
おり、上記ピストンロッド７の突出量が大きい場合に
は、上記ローラ３４が上記カム筒３３から外れてピスト
ンロッド７の外周面に当接しており、上記切換弁２７
は、図１に示した状態に切り換えられている。この状態
で前記開閉操作弁２２への通電を停止し、この開閉操作
弁２２を図示の状態として閉鎖側給排ポート１５に圧縮
空気を送り込むと、上記各扉１ａ、１ｂは、比較的迅速
に閉鎖方向に移動する。First, when the doors 1a and 1b are displaced in the opening direction and the amount of protrusion of the piston rod 7 is large, the roller 34 is disengaged from the cam cylinder 33 and abuts the outer peripheral surface of the piston rod 7. Is in contact with the switching valve 27.
Has been switched to the state shown in FIG. In this state, energization of the opening / closing operation valve 22 is stopped, and compressed air is sent to the closing side supply / discharge port 15 with the opening / closing operation valve 22 in the state shown in the figure, so that the doors 1a and 1b relatively quickly. Move in the closing direction.

【００２０】次に、これら両扉１ａ、１ｂが或る程度閉
鎖位置に近付くと、上記ローラ３４が上記カム筒３３の
中径部３５に乗り上げ、上記切換弁２７が図１の中央位
置に切り換えられる。この結果、それ迄開いていた前記
第一の開放側バイパス管２６が閉じられ、前記開放側給
排ポート１４から排出される空気は、前記減速弁ユニッ
ト２３ａだけでなく、前記減速用絞り弁２５も通過する
様になる。この結果、上記開放側給排ポート１４からの
空気排出が緩徐になり、上記ピストンロッド７がシリン
ダ筒６に引き込まれる速度が遅くなって、上記両扉１
ａ、１ｂの閉鎖方向への移動速度が緩徐になる。Next, when the doors 1a and 1b approach the closed position to some extent, the roller 34 rides on the medium diameter portion 35 of the cam cylinder 33, and the switching valve 27 switches to the central position of FIG. To be As a result, the first opening-side bypass pipe 26 that has been open until then is closed, and the air discharged from the opening-side supply / discharge port 14 is not limited to the deceleration valve unit 23a but also the deceleration throttle valve 25. Will also pass. As a result, the air discharge from the open side supply / discharge port 14 becomes slower, the speed at which the piston rod 7 is drawn into the cylinder cylinder 6 becomes slower, and the both doors 1
The moving speed of a and 1b in the closing direction becomes slow.

【００２１】上記両扉１ａ、１ｂが更に閉鎖位置に近付
くと、上記ローラ３４が上記カム筒３３の大径部３６に
乗り上げ、上記切換弁２７が図１の左端位置に切り換え
られる。この結果、上記第一の開放側バイパス管２６が
閉じられた状態のまま、前記閉鎖側給排管２１の上流側
部分と前記第一の閉鎖側バイパス管２８とが連通する。
この結果前記閉鎖側給排ポート１５には、前記減圧弁３
０を通過する事により、圧力が低下した圧縮空気が送り
込まれる。従って、上記１対の扉１ａ、１ｂを閉鎖側に
押圧する力が弱くなる。When the both doors 1a, 1b further approach the closed position, the roller 34 rides on the large diameter portion 36 of the cam barrel 33, and the switching valve 27 is switched to the left end position in FIG. As a result, the upstream side portion of the closing-side supply / discharge pipe 21 and the first closing-side bypass pipe 28 communicate with each other with the first opening-side bypass pipe 26 kept closed.
As a result, the pressure reducing valve 3 is attached to the closing side supply / discharge port 15.
By passing 0, compressed air whose pressure has dropped is sent. Therefore, the force for pressing the pair of doors 1a, 1b toward the closing side becomes weak.

【００２２】そして、上記両扉１ａ、１ｂが完全に閉鎖
位置にまで移動し切ると、上記ローラ３４が上記大径部
３６から外れ、上記中径部３５に当接する。この結果、
再び上記閉鎖側給排ポート１５に、上記減圧弁３０を通
過していない高圧の圧縮空気が送り込まれる様になっ
て、上記両扉１ａ、１ｂを閉鎖方向に向け強く押し付け
る。When both the doors 1a and 1b are completely moved to the closed position, the roller 34 comes off the large diameter portion 36 and comes into contact with the medium diameter portion 35. As a result,
Again, high pressure compressed air that has not passed through the pressure reducing valve 30 is sent to the closing side supply / discharge port 15, and the both doors 1a, 1b are strongly pressed toward the closing direction.

【００２３】上述の様に構成される本発明の扉開閉装置
の場合には、上記両扉１ａ、１ｂが乗降口を閉鎖し切る
直前に、前記エアシリンダ４がこれら両扉１ａ、１ｂを
閉鎖方向に押圧する力が低下する。この結果、乗降客の
身体や手荷物が扉に挟まれた場合に、これら身体や手荷
物を抜き取る作業を容易に行なえる。又、上記両扉１
ａ、１ｂが完全に閉じ切った状態では、これら両扉１
ａ、１ｂが閉鎖方向に向け十分に強い力で押し付けられ
るので、鉄道車両の乗降口が不用意に開く事がなくな
る。In the case of the door opening / closing device of the present invention constructed as described above, the air cylinder 4 closes both the doors 1a and 1b immediately before the doors 1a and 1b completely close the doors. The force pressing in the direction decreases. As a result, when the passenger's body or baggage is caught in the door, it is possible to easily remove the body or baggage. Also, both doors 1
When a and 1b are completely closed, both doors 1
Since a and 1b are pressed in the closing direction with a sufficiently strong force, the entrance / exit of the railway vehicle does not open carelessly.

【００２４】図３は、上記両扉１ａ、１ｂの開閉移動距
離と、これら両扉１ａ、１ｂを移動させる為の力との関
係を示している。図３の実線αは上記両扉１ａ、１ｂを
閉鎖方向に移動させる際に、これら両扉１ａ、１ｂに加
えられる力である。又、破線βは、上記両扉１ａ、１ｂ
を開放方向に移動させる際に、これら両扉１ａ、１ｂに
加えられる力である。更に、鎖線γは、これら両扉１
ａ、１ｂのストローク（位置）である。これら図３に記
載した各線α、β、γから明らかな通り、本発明の扉開
閉装置によれば、上記両扉１ａ、１ｂが閉じ切る直前
に、これら両扉１ａ、１ｂを押す力を弱くして、これら
両扉１ａ、１ｂに挟まった身体や手荷物を抜き取り易く
する。そして、上記両扉１ａ、１ｂが完全に閉じ切った
状態では、これら両扉１ａ、１ｂが閉鎖方向に向け十分
に強い力で押し付ける。FIG. 3 shows the relationship between the opening / closing movement distance of the doors 1a and 1b and the force for moving the doors 1a and 1b. A solid line α in FIG. 3 is a force applied to both doors 1a and 1b when the doors 1a and 1b are moved in the closing direction. Further, the broken line β indicates the both doors 1a and 1b.
Is a force applied to both doors 1a and 1b when moving in the opening direction. In addition, the chain line γ is
Strokes (positions) a and 1b. As is clear from the lines α, β, γ shown in FIG. 3, according to the door opening / closing device of the present invention, the force for pushing the doors 1a, 1b is weakened immediately before the doors 1a, 1b are completely closed. The body and baggage sandwiched between the doors 1a and 1b are easily removed. When the doors 1a and 1b are completely closed, the doors 1a and 1b are pressed with a sufficiently strong force toward the closing direction.

【００２５】尚、これら両扉１ａ、１ｂが完全に閉じ切
った状態では、閉鎖確認用リミットスイッチ４５、４５
が閉鎖状態を検知して、運転席に設けた表示灯等によ
り、出発可能である状態を知らせる。図示の例では、上
記閉鎖確認用リミットスイッチ４５、４５を１対設ける
と共に、上記両扉１ａ、１ｂにそれぞれ設けた押圧板４
６、４６（図示の例では、一方の押圧板４６は、前記従
動側押し引きブラケット１３を兼ねている。）が両リミ
ットスイッチ４５、４５を押した場合にのみ、上記表示
灯等が出発可能である事を表す表示をする様にしてい
る。従って、１対の扉１ａ、１ｂを設けた構造で、これ
ら両扉１ａ、１ｂの閉鎖確認を確実に行なわせる事がで
きる。When the doors 1a and 1b are completely closed, the closing confirmation limit switches 45 and 45 are provided.
Detects the closed state and informs the driver that the vehicle is ready for departure by the indicator light or the like provided in the driver's seat. In the illustrated example, one pair of the closing confirmation limit switches 45, 45 are provided, and the pressing plate 4 provided on each of the doors 1a, 1b.
6 and 46 (in the illustrated example, one pressing plate 46 also serves as the driven-side push-pull bracket 13) pushes both limit switches 45 and 45, and the above-mentioned indicator light or the like can be started. It is designed to display that is. Therefore, with the structure in which the pair of doors 1a and 1b are provided, it is possible to surely confirm the closing of the both doors 1a and 1b.

【００２６】更に、図示の例では、例えば寒冷地のロー
カル線等、乗降客が少なく、しかも停車している間中乗
降口を開放しておく事が好ましくない路線用の鉄道車両
に利用可能とすべく、乗降客が扉１ａ、１ｂを操作した
場合にのみ、この扉１ａ、１ｂを開閉する様にできる機
構を付設している。この為に、前記開放側給排管２０の
途中に、手動操作用切換弁３７と第二の開放側バイパス
管３８とを、互いに並列に設けている。このうち、第二
の開放側バイパス管３８の途中には、前記開放側給排ポ
ート１４に向けてのみ圧縮空気を流通させる逆止弁３９
を設けている。又、上記手動操作用切換弁３７には、上
記開放側給排管２０の他、前記閉鎖側給排管２１の途中
で、前記開閉操作弁２２と切換弁２７との間部分から分
岐した分岐給気管４０の中間部を接続している。この分
岐給気管４０の下流端は、上記開放側給排管２０の途中
で、前記減速弁ユニット２３ａと上記手動操作用切換弁
３７との間部分に接続している。又、この分岐給気管４
０の途中で、上記手動操作用切換弁３７よりも下流側部
分には、調圧用減圧弁４１と、上記開放側給排ポート１
４に向けてのみ圧縮空気を流通させる逆止弁４２とを設
けている。Further, in the example shown in the figure, it can be used for railway vehicles for routes such as local lines in cold regions where there are few passengers and it is not desirable to open the entrance during the stop. Therefore, a mechanism is provided so that the doors 1a and 1b can be opened and closed only when passengers operate the doors 1a and 1b. For this reason, a manual operation switching valve 37 and a second opening side bypass pipe 38 are provided in parallel with each other in the opening side supply / discharge pipe 20. Among these, a check valve 39 that allows compressed air to flow only toward the opening-side supply / discharge port 14 in the middle of the second opening-side bypass pipe 38.
Is provided. In addition to the opening side supply / discharge pipe 20, the switching valve 37 for manual operation has a branch branched from a portion between the opening / closing operation valve 22 and the switching valve 27 in the middle of the closing side supply / discharge pipe 21. The middle portion of the air supply pipe 40 is connected. The downstream end of the branch air supply pipe 40 is connected to a portion between the deceleration valve unit 23 a and the manual operation switching valve 37 in the middle of the open side supply / discharge pipe 20. Also, this branch air supply pipe 4
In the middle of 0, the pressure reducing valve 41 for pressure adjustment and the open side supply / discharge port 1 are provided in the downstream side of the manual operation switching valve 37.
4 and a check valve 42 that allows compressed air to flow only toward the valve 4.

【００２７】上記調圧用減圧弁４１は、上記手動操作用
切換弁３７への通電時に、上記開放側給排ポート１４に
送り込む圧縮空気の圧力を、前記閉鎖側給排ポート１５
に送り込む圧縮空気の圧力よりも少し低くして、前記ピ
ストン８の両側に作用する力の大きさをほぼ同じにする
役目を有する。即ち、上記ピストン８の受圧面積は、前
記ピストンロッド７の断面積分だけ、上記開放側給排ポ
ート１４側と上記閉鎖側給排ポート１５側とで異なる
（開放側給排ポート１４側が広い）。そこで、上記両給
排ポート１４、１５に送り込む圧縮空気の圧力を、この
受圧面積に反比例して異ならせる事により、上記手動操
作用切換弁３７への通電時に、上記ピストン８の両側
に、ほぼ同じ大きさの力が加わる様にしている。The pressure reducing valve 41 regulates the pressure of the compressed air sent to the open side supply / discharge port 14 when the manual operation switching valve 37 is energized.
The pressure of the compressed air sent to is slightly lower than that of the compressed air so that the magnitude of the force acting on both sides of the piston 8 becomes substantially the same. That is, the pressure receiving area of the piston 8 differs between the open side supply / discharge port 14 side and the closed side supply / discharge port 15 side (the open side supply / discharge port 14 side is wide) by the cross-section integration of the piston rod 7. Therefore, by making the pressure of the compressed air sent to both the supply / discharge ports 14 and 15 different in inverse proportion to this pressure receiving area, when the manual operation switching valve 37 is energized, the pressure is almost equal to both sides of the piston 8. I try to apply the same amount of force.

【００２８】又、前記扉１ａ、１ｂの近傍若しくは上記
ピストンロッド７の近傍には、これら両扉１ａ、１ｂが
閉鎖位置から少し開放位置に変位した事を検知する開放
動作検知用リミットスイッチ４３と、上記両扉１ａ、１
ｂが開放位置から少し閉鎖位置に変位した事を検知する
閉鎖動作検知用リミットスイッチ４４とを設けている。
これら両リミットスイッチ４３、４４の信号は、前記開
閉操作弁２２への通電を制御する電気制御回路（図示せ
ず）に入力している。そして、この電気制御回路は、開
放機能及び閉鎖機能を有する。このうちの開放機能は、
上記両扉１ａ、１ｂを閉鎖状態から開放方向に少し変位
させた事を上記開放動作検知用リミットスイッチ４３が
検知した場合に、前記給気管１６と前記開放側給排ポー
ト１４に通じる開放側給排管２０とを連通させる状態
に、上記開閉操作弁２２を切り換えて、上記両扉１ａ、
１ｂを開放方向に水平移動させるものである。又、閉鎖
機能は、上記両扉１ａ、１ｂを開放状態から閉鎖方向に
少し移動させた事を上記閉鎖動作検知用リミットスイッ
チ４４が検知した場合に、上記給気管１６と前記閉鎖側
給排ポート１５に通じる閉鎖側給排管２１とを連通させ
る状態に上記開閉操作弁２２を切り換えて、上記両扉１
ａ、１ｂを閉鎖方向に水平移動させるものである。In addition, in the vicinity of the doors 1a, 1b or in the vicinity of the piston rod 7, there is provided an opening operation detecting limit switch 43 for detecting that the doors 1a, 1b are displaced from the closed position to the open position. , The above doors 1a, 1
There is provided a closing motion detecting limit switch 44 for detecting a slight displacement of b from the open position to the closed position.
The signals from both limit switches 43 and 44 are input to an electric control circuit (not shown) that controls the energization of the opening / closing operation valve 22. And this electric control circuit has an opening function and a closing function. Of these, the opening function is
When the opening operation detection limit switch 43 detects that the doors 1a and 1b are slightly displaced from the closed state in the opening direction, the opening side supply communicating with the air supply pipe 16 and the opening side supply / discharge port 14 is detected. The on-off operation valve 22 is switched to a state in which it communicates with the exhaust pipe 20, and the both doors 1a,
1b is moved horizontally in the opening direction. Further, the closing function is such that, when the closing operation detecting limit switch 44 detects that the both doors 1a, 1b are slightly moved from the open state to the closing direction, the air supply pipe 16 and the closing side supply / discharge port. The open / close operation valve 22 is switched to a state in which it communicates with the closed side supply / discharge pipe 21 leading to the door 15.
The a and 1b are horizontally moved in the closing direction.

【００２９】例えばローカル線で寒冷時に停車した場合
には、前記開閉操作弁２２を図１に示した状態としたま
ま、前記手動操作弁３７を図１とは逆の状態に切り換え
る。この結果、上記閉鎖側給排ポート１５だけでなく、
前記開放側給排ポート１４にも圧縮空気が送り込まれ、
前記ピストン８の両側にほぼ同じ大きさの力が加わる。
この状態で乗降客が扉１ａ、１ｂを開放方向に動かす
と、この動きを前記開放動作検知用リミットスイッチ４
３が検知し、前記電気制御回路が上記開閉操作弁２２を
図１と反対の状態に切り換える。この結果、上記開放側
給排ポート１４に圧縮空気が供給されると共に、上記閉
鎖側給排ポート１５から空気が排出されて、上記両扉１
ａ、１ｂが乗降口を開放する。この開放時に、閉鎖動作
検知用リミットスイッチ４４が、上記両扉１ａ、１ｂが
開放端にまで移動した事を検知し、上記電気制御回路中
のタイマーを起動させる。このタイマーの設定時間中
は、上記開閉操作弁２２が図１とは逆の状態のままとな
り、上記両扉１ａ、１ｂを閉じる事はできなくなる。For example, when the vehicle is stopped on a local line during cold weather, the manual operation valve 37 is switched to the state opposite to that shown in FIG. 1 while the opening / closing operation valve 22 is kept in the state shown in FIG. As a result, not only the closing side supply / discharge port 15 but also
Compressed air is also sent to the open side supply / discharge port 14,
Forces of substantially the same magnitude are applied to both sides of the piston 8.
In this state, when passengers move the doors 1a, 1b in the opening direction, this movement causes the opening switch detection limit switch 4 to move.
3 detects and the electric control circuit switches the opening / closing operation valve 22 to the state opposite to that in FIG. As a result, compressed air is supplied to the opening-side supply / discharge port 14 and air is discharged from the closing-side supply / discharge port 15, so that both doors 1 are released.
a and 1b open the entrance and exit. At the time of this opening, the closing operation detecting limit switch 44 detects that both the doors 1a and 1b have moved to the open ends, and activates the timer in the electric control circuit. During the setting time of this timer, the opening / closing operation valve 22 remains in the state opposite to that shown in FIG. 1, and the doors 1a and 1b cannot be closed.

【００３０】上記タイマーの設定時間が経過した後、上
記開閉操作弁２２が図１の状態に戻り、再び上記ピスト
ン８の両側にほぼ同じ大きさの力が加わる様にして、上
記両扉１ａ、１ｂを、手動により閉鎖方向に移動可能な
状態とする。この状態でこれら両扉１ａ、１ｂを閉鎖方
向に移動させると、この動きを前記閉鎖動作検知用リミ
ットスイッチ４４が検知し、前記電気制御回路が上記手
動操作用切換弁３７への通電を停止して、この手動操作
用切換弁３７を図１の状態に切り換える。この結果、上
記閉鎖側給排ポート１５に圧縮空気が供給されると共
に、上記開放側給排ポート１４から空気が排出されて、
上記両扉１ａ、１ｂが乗降口を閉鎖する。この閉鎖時
に、開放動作検知用リミットスイッチ４３が、上記両扉
１ａ、１ｂが閉鎖端にまで移動した事を検知し、上記電
気制御回路中のタイマーを起動させる。このタイマーの
設定時間中は、上記手動操作用切換弁３７が図１の状態
のままとなり、上記両扉１ａ、１ｂを開く事はできなく
なる。上記タイマーの設定時間が経過した後は、上記電
気制御回路が再び上記手動操作用切換弁３７を図１と逆
の状態に切り換え、上記両扉１ａ、１ｂを手動により開
放可能な状態とする。After the time set by the timer has elapsed, the on-off operation valve 22 returns to the state shown in FIG. 1 so that forces of substantially the same magnitude are applied to both sides of the piston 8 again, so that both doors 1a, 1b is manually movable in the closing direction. When the two doors 1a, 1b are moved in the closing direction in this state, the closing operation detecting limit switch 44 detects this movement, and the electric control circuit stops energizing the manual operation switching valve 37. Then, the switching valve 37 for manual operation is switched to the state shown in FIG. As a result, compressed air is supplied to the closed side supply / discharge port 15 and air is discharged from the open side supply / discharge port 14,
The doors 1a and 1b close the entrance and exit. At the time of closing, the opening operation detecting limit switch 43 detects that both the doors 1a and 1b have moved to the closed ends, and activates the timer in the electric control circuit. During the set time of this timer, the manual operation switching valve 37 remains in the state shown in FIG. 1, and the doors 1a and 1b cannot be opened. After the set time of the timer has elapsed, the electric control circuit again switches the manual operation switching valve 37 to the state opposite to that shown in FIG. 1 so that the doors 1a and 1b can be manually opened.

【００３１】尚、本明細書に記載した「管」なる語は、
圧縮空気を流す流路としての機能を有する部分を指すも
ので、一般的な管は勿論、フレキシブルチューブ、更に
はハウジング等の内部に形成された空気流路等も含むも
のである。The term "tube" described in the present specification means
It refers to a portion having a function as a flow path for flowing compressed air, and includes not only a general tube but also a flexible tube and an air flow path formed inside a housing or the like.

【００３２】[0032]

【発明の効果】本発明の扉の開閉装置は、以上に述べた
通り構成され作用するので、扉閉鎖時に乗降客の身体や
手荷物が挟まれても、容易に扉から抜き取る事ができ
る。この為、車掌が扉を開放する作業を行なう必要がな
くなり、鉄道車両の停車時間が徒に長くなる事を防止し
て、ラッシュ時間に於ける定時運行の実現に寄与でき
る。Since the door opening / closing device of the present invention is constructed and operates as described above, even if a passenger's body or baggage is caught when the door is closed, it can be easily removed from the door. Therefore, the conductor does not need to open the door, which can prevent the train from stopping for too long and can contribute to the realization of scheduled operation during rush hours.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施の形態の１例を示す、エアシリン
ダの伸縮を制御する為の圧縮空気の制御回路の回路図。FIG. 1 is a circuit diagram of a compressed air control circuit for controlling expansion and contraction of an air cylinder, showing an example of an embodiment of the present invention.

【図２】扉を開閉駆動する為の駆動装置部分の正面図。FIG. 2 is a front view of a drive device portion for opening and closing a door.

【図３】扉の開閉移動距離と扉を移動させる為の力との
関係を示す線図。FIG. 3 is a diagram showing a relationship between a door opening / closing movement distance and a force for moving the door.

【符号の説明】[Explanation of symbols]

１ａ、１ｂ 扉 ２ 支持ブラケット ３ 滑車 ４ エアシリンダ ５ 無端ベルト ５ａ 上辺 ５ｂ 下辺 ６ シリンダ筒 ７ ピストンロッド ８ ピストン ９ 駆動側押し引きブラケット １０ プーリ １１ 従動側押し引き腕 １３ 従動側押し引きブラケット １４ 開放側給排ポート １５ 閉鎖側給排ポート １６ 給気管 １７ 排気管 １８ 圧縮空気源 １９ 消音器 ２０ 開放側給排管 ２１ 閉鎖側給排管 ２２ 開閉操作弁 ２３ａ、２３ｂ 減速弁ユニット ２４ 非常開放弁 ２５ 減速用絞り弁 ２６ 第一の開放側バイパス管 ２７ 切換弁 ２８ 第一の閉鎖側バイパス管 ２９ 第二の閉鎖側バイパス管 ３０ 減圧弁 ３１、３２ 逆止弁 ３３ カム筒 ３４ ローラ ３５ 中径部 ３６ 大径部 ３７ 手動操作用切換弁 ３８ 第二の開放側バイパス管 ３９ 逆止弁 ４０ 分岐給気管 ４１ 調圧用減圧弁 ４２ 逆止弁 ４３ 開放動作検知用リミットスイッチ ４４ 閉鎖動作検知用リミットスイッチ ４５ 閉鎖確認用リミットスイッチ ４６ 押圧板 1a 1b Door 2 Support bracket 3 Pulley 4 Air cylinder 5 Endless belt 5a Upper side 5b Lower side 6 Cylinder cylinder 7 Piston rod 8 Piston 9 Drive side push / pull bracket 10 Pulley 11 Driven side push / pull arm 13 Followed side push / pull bracket 14 Open side Supply / discharge port 15 Closed supply / discharge port 16 Air supply pipe 17 Exhaust pipe 18 Compressed air source 19 Silencer 20 Open side supply / discharge pipe 21 Closed supply / discharge pipe 22 Open / close operation valve 23a, 23b Decelerator valve unit 24 Emergency open valve 25 Deceleration Throttle valve 26 first open side bypass pipe 27 switching valve 28 first closed side bypass pipe 29 second closed side bypass pipe 30 pressure reducing valve 31, 32 check valve 33 cam cylinder 34 roller 35 medium diameter part 36 large Diameter part 37 Manual operation switching valve 38 Second opening side bypass pipe 39 Check valve 40 Branch air supply pipe 4 Pressure regulating pressure reducing valve 42 check valve 43 opening operation detecting limit switch 44 closing operation detection limit switch 45 closed confirmation limit switch 46 pressing plate

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 水平移動する事により開口部を開閉する
扉と、圧縮空気の給排に基づく伸縮により上記扉を水平
移動させるアクチュエータと、このアクチュエータへの
圧縮空気の給排を制御する為の制御回路とを備える扉開
閉装置に於いて、上記制御回路は、上記開口部を閉じる
べく上記扉を水平移動させた場合に、上記開口部を閉鎖
し切る直前に上記アクチュエータに供給する圧縮空気の
圧力を低下させて上記扉を閉鎖位置に移動させた後、上
記アクチュエータに送り込む圧縮空気の圧力を上昇させ
る機能を有する事を特徴とする扉開閉装置。1. A door that opens and closes an opening by moving horizontally, an actuator that horizontally moves the door by expansion and contraction based on supply and discharge of compressed air, and a control for supplying and discharging compressed air to and from the actuator. In a door opening / closing device including a control circuit, the control circuit is configured to control compressed air supplied to the actuator immediately before closing the opening when the door is horizontally moved to close the opening. A door opening / closing device having a function of increasing the pressure of compressed air sent to the actuator after lowering the pressure to move the door to the closed position. 【請求項２】 水平移動する事により開口部を開閉する
扉と、伸長又は収縮によりこの扉を開放方向に移動さ
せ、収縮又は伸長により上記扉を閉鎖方向に移動させる
アクチュエータと、圧縮空気の送り込みに基づいてこの
アクチュエータを、上記扉を開放させるべく伸長又は収
縮させ、この扉を閉鎖すべく上記アクチュエータを収縮
又は伸長させる際には空気を排出させる開放側給排ポー
トと、圧縮空気の送り込みに基づいて上記アクチュエー
タを、上記扉を閉鎖すべく収縮又は伸長させ、この扉を
開放すべく上記アクチュエータを伸長又は収縮させる際
には空気を排出させる閉鎖側給排ポートと、これら開放
側、閉鎖側両給排ポートを通じての上記アクチュエータ
への圧縮空気の給排を制御する為の制御回路とを備える
扉開閉装置に於いて、上記制御回路は、一端を圧縮空気
源に通じさせた給気管と、一端を大気に開放させた排気
管と、一端を上記開放側給排ポートに通じさせた開放側
給排管と、一端を上記閉鎖側給排ポートに通じさせた閉
鎖側給排管と、上記給気管及び排気管の他端と上記開放
側、閉鎖側両給排管の他端との間に設けられ、給気管と
排気管との何れか一方の管を上記開放側給排管と閉鎖側
給排管との何れか一方の管に通じさせると同時に給気管
と排気管との他方の管を上記開放側給排管と閉鎖側給排
管との他方の管に通じさせて、上記開放側、閉鎖側両給
排ポートを通じての空気の給排状態を切り換える開閉操
作弁と、上記閉鎖側給排管と並列に設けられた減圧弁
と、上記アクチュエータの近傍に設けられて、このアク
チュエータのストロークに応じて上記減圧弁の接続状態
を切り換える切換弁とを備え、この切換弁は、上記アク
チュエータが収縮し切る直前に上記開閉操作弁と上記閉
鎖側給排ポートとの間に上記減圧弁を接続し、上記アク
チュエータが収縮し切った状態で上記開閉操作弁と上記
閉鎖側給排ポートとの間から上記減圧弁を切り離すもの
である事を特徴とする扉開閉装置。2. A door that opens and closes an opening by moving horizontally, an actuator that moves the door in the opening direction by expansion or contraction, and an actuator that moves the door in the closing direction by contraction or expansion, and feeding of compressed air. Based on the above, the actuator is extended or contracted to open the door, and when the actuator is contracted or extended to close the door, an open side supply / exhaust port for discharging air and a compressed air feed Based on this, the actuator is contracted or extended to close the door, and when the actuator is expanded or contracted to open the door, a closing side supply / discharge port for discharging air, and these opening side and closing side In a door opening and closing device comprising a control circuit for controlling the supply and discharge of compressed air to and from the actuator through both supply and discharge ports, The control circuit includes an air supply pipe having one end communicated with a compressed air source, an exhaust pipe having one end opened to the atmosphere, an open side supply / discharge pipe having one end communicated with the open side supply / discharge port, and one end A closed side supply / discharge pipe communicated with the closed side supply / discharge port, and is provided between the other ends of the air supply pipe and the exhaust pipe and the other ends of both the open side and closed side supply / discharge pipes. One of the exhaust pipe is connected to one of the open-side supply / discharge pipe and the closed-side supply / discharge pipe, and at the same time, the other of the air supply pipe and the exhaust pipe is connected to the open-side supply / discharge pipe. An opening / closing operation valve that communicates with the other of the supply pipe and the closed supply / exhaust pipe to switch the air supply / exhaust state through the open / closed supply / exhaust ports, and the closed supply / exhaust pipe in parallel. The pressure reducing valve is provided near the actuator and the pressure reducing valve is provided in accordance with the stroke of the actuator. And a switching valve for switching the connection state of the actuator. The switching valve connects the pressure reducing valve between the opening / closing operation valve and the closing side supply / discharge port immediately before the actuator is completely contracted, and the actuator contracts. A door opening / closing device, wherein the pressure reducing valve is disconnected from between the opening / closing operation valve and the closing side supply / discharge port in a closed state.