JPH11173003A - Door electric switchgear - Google Patents
Door electric switchgearInfo
- Publication number
- JPH11173003A JPH11173003A JP9346195A JP34619597A JPH11173003A JP H11173003 A JPH11173003 A JP H11173003A JP 9346195 A JP9346195 A JP 9346195A JP 34619597 A JP34619597 A JP 34619597A JP H11173003 A JPH11173003 A JP H11173003A
- Authority
- JP
- Japan
- Prior art keywords
- door
- screw shaft
- motor
- closing
- door opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
(57)【要約】
【課題】 空気圧式の扉開閉装置の欠点を解消し、我国
のラッシュ事情に適合した乗客に優しい扉電動開閉装置
を提供する。
【解決手段】 ねじ軸1に螺合した送りナット2a,2bに吊
り下げた扉3a,3bを、ねじ軸1の一端に連結したモータ4
の正逆転により開閉する。一方向クラッチ5の内輪5aを
ねじ軸1の他端に連結して,扉開き方向へのねじ軸の回転
力のみが外輪5cに伝わるようにする。非通電時に外輪5c
に連結してこれをロックし,通電時に外輪5cから切断さ
れてロックを解除する電磁ロック装置6と、閉動作中の
扉3a,3bに物が挟まれたか否かを検知する検知手段8を設
ける。検知手段8が物が挟まれたと検知したとき、制御
部7によって、電磁ロック装置6への通電を開始し、モー
タ4を扉開き方向へ所定時間だけ回転駆動した後、電磁
ロック装置6への通電を終了し、かつモータ4を扉閉じ方
向へ回転駆動する。
(57) [Problem] To provide a passenger-friendly door-operated door opening / closing apparatus that solves the drawbacks of the pneumatic door opening / closing apparatus and is suitable for the rush situation in Japan. A motor (4) in which doors (3a, 3b) suspended from feed nuts (2a, 2b) screwed to a screw shaft (1) are connected to one end of the screw shaft (1).
It opens and closes by the forward and reverse rotation of. The inner ring 5a of the one-way clutch 5 is connected to the other end of the screw shaft 1 so that only the rotational force of the screw shaft in the door opening direction is transmitted to the outer ring 5c. Outer ring 5c when not energized
And an electromagnetic lock device 6 which is disconnected from the outer ring 5c to release the lock when energized, and a detecting means 8 which detects whether or not an object is caught between the doors 3a, 3b during the closing operation. Provide. When the detecting means 8 detects that an object has been caught, the control unit 7 starts energization of the electromagnetic lock device 6, and after rotating the motor 4 in the door opening direction for a predetermined time, the control unit 7 controls the electromagnetic lock device 6. The energization is terminated, and the motor 4 is driven to rotate in the door closing direction.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電車の乗降口など
の扉を開閉する扉電動開閉装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric door opening / closing apparatus for opening / closing a door such as a train entrance.
【０００２】[0002]
【従来の技術】従来、電車の乗降口の扉は、空気圧源か
ら配管を経て供給される圧縮空気で往復作動するエアシ
リンダによって開閉駆動されている。しかし、このよう
な空気圧式の扉開閉装置は、作動流体が空気であるた
め、夏冬の気温の変化によって作動速度が変化し、扉の
開閉速度が変動するという問題がある。また、配管やエ
アタンクが何らかの原因で破損した場合、エアシリンダ
から圧縮空気が抜けて扉を手動で開くことが可能となっ
て、乗客が転落しかねないという問題がある。さらに、
上記空気圧式の扉開閉装置は、乗降客を強制的に戸閉め
分断して発車可能な状態にするという見地から、扉が所
定寸法以下に閉じていると、僅かに開いていても戸閉め
完了信号が出るため、特にラッシュ時には、ホームに残
された乗客の身体等を挟んだまま電車が発車する危険が
ある一方、このような危険を無くすには、扉を強大な力
で押し開きつつ扉に挟まれた乗客を車内に押し込む「押
し屋」という職員をホームの各所に配置しなければなら
ない。2. Description of the Related Art Conventionally, a door at an entrance / exit of a train is driven to open and close by an air cylinder reciprocating with compressed air supplied from a pneumatic source via a pipe. However, such a pneumatic door opening / closing device has a problem in that since the working fluid is air, the operating speed changes due to changes in summer and winter temperatures, and the door opening / closing speed fluctuates. In addition, when the pipe or the air tank is damaged for some reason, the compressed air escapes from the air cylinder, and the door can be opened manually, so that there is a problem that the passenger may fall. further,
From the viewpoint that the pneumatic door opening and closing device forcibly closes and disengages passengers so that the vehicle can be departed, if the door is closed to a predetermined size or less, the door is completely closed even if it is slightly opened. Because there is a signal, especially during a rush hour, there is a danger that the train will depart with the passenger's body left on the platform, etc. There must be staff at every part of the platform, called "pushers," who push passengers into the car.
【０００３】[0003]
【発明が解決しようとする課題】これに対して、乗客の
安全を優先する欧州の国々では、電動モータで扉を開閉
駆動する扉開閉装置が普及しており、このような扉電動
開閉装置は、安全優先の見地から、扉に物が挟まると、
これを検知したセンサからの信号に基づき扉が自動的に
開駆動されるようになっている。ところが、ラッシュア
ワーの混雑が激しい我国でこのような扉電動開閉装置を
そのまま採用すると、戸挟み検知が続発して、電車がい
つまでたっても発車できないという新たな問題が生じ
る。On the other hand, in European countries where priority is given to passenger safety, a door opening / closing device that opens and closes a door with an electric motor has become widespread. , From the viewpoint of giving priority to safety, when an object gets caught in the door,
The door is automatically opened based on a signal from a sensor that detects this. However, if such a door-operated door opening / closing device is used as it is in Japan where rush hour is highly congested, a new problem arises in that the detection of a door jam continues, and the train cannot be started forever.
【０００４】そこで、本発明の目的は、モータと扉の間
に適切な機構を介設することによって、乗客を挟んだま
ま発車したり,扉の押し開きに強大な力を要するなどの
空気圧式の扉開閉装置の欠点を解消でき、我国のラッシ
ュ事情に適合し、しかも乗客に優しい扉電動開閉装置を
提供することにある。Accordingly, an object of the present invention is to provide a pneumatic type such that a passenger interposes a vehicle or a door requires a large force to open and close by providing an appropriate mechanism between a motor and a door. It is an object of the present invention to provide a door-operated door opening / closing apparatus which can solve the drawbacks of the door opening / closing apparatus of the present invention, is adapted to the rush situation in Japan, and is friendly to passengers.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、ねじ軸に螺合した送りナットに
吊り下げた扉を、上記ねじ軸の一端に連結したモータの
正逆転により開閉する扉電動開閉装置において、上記ね
じ軸の他端に一方が連結されるとともに、扉開き方向へ
のねじ軸の回転力のみが他方に伝わるように設けられた
一方向クラッチと、非通電時に上記一方向クラッチの他
方に連結して、この他方をロックするとともに、通電時
に上記一方向クラッチの他方から切断されてロックを解
除する電磁ロック装置と、閉動作中の扉に物が挟まれた
か否かを検知する検知手段と、この検知手段が物が挟ま
れたと検知したとき、上記電磁ロック装置への通電を開
始し、上記モータを扉開き方向へ回転駆動した後、上記
電磁ロック装置への通電を終了し、かつ上記モータを扉
閉じ方向へ回転駆動する制御部を備えたことを特徴とす
る。In order to achieve the above object, according to the present invention, a door suspended from a feed nut screwed to a screw shaft is connected to one end of the screw shaft. A one-way clutch provided with one end connected to the other end of the screw shaft, and provided so that only the rotational force of the screw shaft in the door opening direction is transmitted to the other end. Sometimes, the one-way clutch is connected to the other, and the other is locked, and at the time of energization, the one-way clutch is disconnected from the other of the one-way clutch to release the lock, and an object is pinched by the door during the closing operation. Detecting means for detecting whether or not the electromagnetic lock device starts energizing the electromagnetic locking device when the detecting device detects that an object has been caught, rotating the motor in the door opening direction, and To Exit conductive, and characterized by comprising a control unit for rotationally driving the motor to the door closing direction.
【０００６】扉を吊り下げた送りナットにねじ軸が螺合
し、このねじ軸の一端に正逆転するモータが連結される
一方、上記ねじ軸の他端に一方を連結し、扉開き方向へ
のねじ軸の回転力のみが他方に伝わるように一方向クラ
ッチが設けられ、この一方向クラッチの他方に、非通電
時に連結してこの他方をロックし,通電時にこの他方か
ら切断されてロックを解除する電磁ロック装置が設けら
れている。モータによってねじ軸が扉閉じ方向に回転す
ると、この回転は一方向クラッチの一方から他方には伝
わらないので、この他方をロックまたはロック解除する
電磁ロック装置の非通電,通電に拘わらず、ねじ軸が回
転し、送りナットを介して扉を閉動させる。この閉動作
中に、検知手段が扉に物が挟まれたことを検知すると、
制御部は、電磁ロック装置への通電を開始し、モータを
扉開き方向へ回転駆動する。すると、モータによるねじ
軸の扉開き方向の回転が電磁ロック装置の一方から他方
に伝わっても、電磁ロック装置がロックを解除するの
で、ねじ軸が回転している間は、送りナットを介して扉
が開動される。次いで、制御部は、電磁ロック装置への
通電を終了し、かつモータを扉閉じ方向へ回転駆動す
る。すると、電磁ロック装置が、一方向クラッチの他方
をロックするが、モータによるねじ軸の扉閉じ方向への
回転は一方向クラッチの一方から他方には伝わらないの
で、ねじ軸が回転して、送りナットを介して扉を閉動さ
せる。[0006] A screw shaft is screwed into a feed nut with the door suspended, and one end of the screw shaft is connected to a motor that rotates in the forward and reverse directions, and one end is connected to the other end of the screw shaft to open the door. A one-way clutch is provided so that only the rotational force of the screw shaft of the one-way clutch is transmitted to the other. An electromagnetic lock device for releasing is provided. When the screw shaft is rotated by the motor in the door closing direction, this rotation is not transmitted from one side of the one-way clutch to the other, so regardless of whether the electromagnetic lock device that locks or unlocks the other side is de-energized or energized, Rotates to close the door via the feed nut. During this closing operation, when the detecting means detects that an object is caught in the door,
The control unit starts energization of the electromagnetic lock device, and rotationally drives the motor in the door opening direction. Then, even if the rotation of the screw shaft in the door opening direction by the motor is transmitted from one side of the electromagnetic lock device to the other side, the electromagnetic lock device releases the lock, so while the screw shaft is rotating, the feed nut is used. The door is opened. Next, the controller terminates the energization of the electromagnetic lock device and drives the motor to rotate in the door closing direction. Then, the electromagnetic lock device locks the other one-way clutch, but since the rotation of the screw shaft in the door closing direction by the motor is not transmitted from one side of the one-way clutch to the other, the screw shaft rotates and the feed is stopped. Close the door via the nut.
【０００７】こうして、閉動作中の扉に物が挟まれる
と、扉がモータの回転駆動時間に対応する所定距離だけ
自動的に開かれた後に、閉動されるので、例えば電車の
扉に乗客を挟んだまま発車したり,挟んだ物を外すため
に手で扉を押し開く必要がないうえ、気温の変化で開閉
速度が変動するとか、空気圧系の破損で扉が勝手に開く
といった従来の空気圧式の扉開閉装置の欠点を解消で
き、乗客にも優しく、混雑の激しい我国のラッシュ事情
にも適合する。一方、モータによってねじ軸が扉開き方
向に回転すると、この回転は一方向クラッチの一方から
他方に伝わるので、この他方を、電磁ロック装置への非
通電によりロックし、あるいは通電によりロック解除す
れば、ロック時に、ねじ軸の回転が阻止されて扉の開動
が停止され、ロック解除時に、ねじ軸の回転により送り
ナットを介して扉が開動される。また、電磁ロック装置
を非通電によりロック状態にするので、停電時に扉を手
で押し開くことができないから、電車等の扉では乗客に
とってより安全つまりフェイルセーフとなる。さらに、
駆動手段であるモータは、空気圧式のシリンダに比して
シール材等の摩耗部材がないので、メインテナンスが容
易という利点がある。In this way, when an object is caught by the door during the closing operation, the door is automatically opened for a predetermined distance corresponding to the rotational driving time of the motor and then closed, so that, for example, a passenger There is no need to depart with the pinch or to open the door by hand in order to remove the pinch, and the opening / closing speed will fluctuate due to changes in temperature, or the door will open on its own due to damage to the pneumatic system. It eliminates the drawbacks of the pneumatic door opening and closing device, is gentle on passengers, and can be adapted to the rush situation in Japan with heavy congestion. On the other hand, when the screw shaft is rotated in the door opening direction by the motor, the rotation is transmitted from one side of the one-way clutch to the other side, so that the other side can be locked by de-energizing the electromagnetic lock device or unlocked by energizing. At the time of locking, the rotation of the screw shaft is prevented and the opening of the door is stopped. At the time of unlocking, the rotation of the screw shaft opens the door via the feed nut. Further, since the electromagnetic lock device is locked by de-energization, the door cannot be pushed open by hand at the time of power failure, so that the door of a train or the like is safer for passengers, that is, fail-safe. further,
The motor, which is the driving means, has an advantage that maintenance is easy because there is no wear member such as a seal member as compared with a pneumatic cylinder.
【０００８】請求項２の扉電動開閉装置は、上記検知手
段が、上記モータに過大電流が所定時間継続して流れた
か否かで、物が挟まれたか否かを検知することを特徴と
する。モータによるねじ軸の扉閉じ方向の回転は、一方
向クラッチが電磁ロック装置に対して切断状態となるた
め、電磁ロック装置のロック,ロック解除の如何に拘わ
らず、回転できて、ねじ軸に螺合した送りナットを介し
て扉を閉動させる。この閉動作中の扉に物が挟まれる
と、回転を阻止されたモータには過大電流が流れるの
で、検知手段は、過大電流が所定時間継続して流れたか
否かで物が挟まれたか否かを検知する。従って、タッチ
スイッチなど耐久性の比較的悪い部材を要さずに、簡素
かつ安価に扉開閉装置を構成することができる。According to a second aspect of the present invention, there is provided an electric door opening and closing apparatus, wherein the detecting means detects whether or not an object is caught by detecting whether or not an excessive current continuously flows through the motor for a predetermined time. . The rotation of the screw shaft in the door closing direction by the motor can be rotated regardless of whether the electromagnetic lock device is locked or unlocked because the one-way clutch is disconnected from the electromagnetic lock device, and the screw shaft can be screwed onto the screw shaft. The door is closed via the combined feed nut. When an object is caught in the door during the closing operation, an excessive current flows through the motor whose rotation has been prevented, so that the detecting means determines whether or not the object has been caught based on whether or not the excessive current has continued to flow for a predetermined time. Is detected. Therefore, the door opening / closing device can be simply and inexpensively configured without requiring a member having relatively low durability such as a touch switch.
【０００９】[0009]
【発明の実施の形態】以下、本発明を図示の実施の形態
により詳細に説明する。図１は、扉電動開閉装置の一例
を示す全体図であり、この扉電動開閉装置は、外周の中
央から左側に左ねじ１aが,右側に右ねじ１bが夫々設け
られたねじ軸１と、上記左ねじ１a,右ねじ１bに夫々螺
合した左ねじおよび右ねじの送りナット２a,２bと、各
送りナット２a,２bに夫々吊り下げた左扉３a,右扉３b
と、上記ねじ軸１の右端に出力軸を連結した正逆転する
モータ４と、上記ねじ軸１の左端に内輪５aが固定され,
この内輪５aにスプラグ５bを介して外輪５cが外嵌され
て、モータ４の正転によるねじ軸１の扉開き(両扉３a,３
bが離間)方向への回転力のみを内輪５aから外輪５cに伝
える一方向クラッチ５と、基部６aが固定され、非通電時
に上記外輪５cに連結(接)してこれをロックするととも
に、通電時に上記外輪５cから切断(断)されてロックを解
除する電磁ロック装置６と、上記モータ４および電磁ロ
ック装置６を制御する制御部７とからなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is an overall view showing an example of a door electric switchgear. The door electric switchgear includes a screw shaft 1 provided with a left screw 1a on the left and a right screw 1b on the right from the center of the outer periphery. Left-hand and right-hand feed nuts 2a and 2b screwed to the left and right screws 1a and 1b, respectively, and left and right doors 3a and 3b suspended from the feed nuts 2a and 2b, respectively.
A forward / reverse rotating motor 4 having an output shaft connected to the right end of the screw shaft 1 and an inner ring 5a fixed to the left end of the screw shaft 1;
An outer ring 5c is fitted over the inner ring 5a via a sprag 5b, and the door of the screw shaft 1 is opened by forward rotation of the motor 4 (both doors 3a, 3a).
The one-way clutch 5, which transmits only the rotational force in the direction (b is separated) from the inner race 5a to the outer race 5c, and the base 6a are fixed, and when not energized, are connected to (contact with) the outer race 5c to lock and lock the same. It comprises an electromagnetic lock device 6 that is sometimes disconnected (cut) from the outer race 5c to release the lock, and a control unit 7 that controls the motor 4 and the electromagnetic lock device 6.
【００１０】上記制御部７は、モータ４を正転,つまり
扉開き方向に回転させるとき、電磁ロック装置６を通電
停止によりロックする一方、モータ４を逆転,つまり扉
閉じ方向に回転させるとき、電磁ロック装置６を通電に
よりロック解除するとともに、閉動作(モータ逆転)中に
扉３a,３bに物が挟まれたか否かを、モータ４に過大電
流が所定時間ｔ1継続して流れたか否かで検知する検知
手段８を備え、この検知手段８が物が挟まれたと検知し
たとき、電流ロック装置６への通電を開始し、モータ４
を所定時間ｔ2正転駆動(扉開動)した後、電磁ロック装
置６への通電を終了し、かつモータ４を逆転駆動する。
なお、上記所定時間ｔ1は、例えば0.5秒、上記所定時間
ｔ2は、例えば扉開き寸法100mmに相当する駆動時間であ
り、両所定時間ｔ1,ｔ2とも制御部７内のタイマ９で計
時される。The control unit 7 locks the electromagnetic lock device 6 by stopping power supply when the motor 4 is rotated in the normal direction, that is, when the door is opened, while rotating the motor 4 in the reverse direction, that is, when the motor 4 is rotated in the door closing direction. thereby unlocking by energizing an electromagnetic locking device 6, closing operation (motor reverse) door 3a in, whether the object is sandwiched 3b, or excessive motor 4 current flows continuously for a predetermined time t 1 whether When the detecting means 8 detects that an object has been caught, it starts energizing the current lock device 6 and the motor 4
After the predetermined time t 2 forward drive (door opening motion), and terminates the energization of the electromagnetic lock unit 6, and reverse driving of the motor 4.
The predetermined time t 1 is, for example, 0.5 seconds, and the predetermined time t 2 is, for example, a driving time corresponding to a door opening dimension of 100 mm. Both the predetermined times t 1 and t 2 are determined by the timer 9 in the control unit 7. Timed.
【００１１】ねじ軸１に送りナット２a,２bを介して吊
り下げられた扉３a,３bは、モータ４の逆回転端で、ね
じ軸１の中央で戸先が互いに当接して図１の如く全閉
し、モータ４の正回転端で、戸先が最大幅に開いて全開
するようになっており、右扉３bの戸先には、左扉３aに
当接して全閉検知信号を制御部７に出力する全閉検知ス
イッチ１０が、全開した右扉３bの戸尻に相当する位置
には、当接により全開検知信号を制御部７に出力する全
開検知スイッチ１１が夫々設けられている。The doors 3a, 3b suspended from the screw shaft 1 via feed nuts 2a, 2b are opposite rotation ends of the motor 4, and the door ends contact each other at the center of the screw shaft 1 as shown in FIG. At the forward end of the motor 4, the door is fully opened and the door is opened to the maximum width. The door of the right door 3b contacts the left door 3a to control the fully closed detection signal. At a position where the fully closed detection switch 10 that outputs to the unit 7 corresponds to the door bottom of the fully opened right door 3b, a fully open detection switch 11 that outputs a fully open detection signal to the control unit 7 by contact is provided. .
【００１２】上記構成の扉電動開閉装置の動作につい
て、図２を参照しつつ次に述べる。まず、全開している
扉３a,３bが閉じる場合、図２(Ａ)に示すように、制御
部７は、ステップＳ１で、電磁ロック装置６を通電停止
により外輪５cをロックする状態にし、ステップＳ２
で、モータ４を逆転駆動してねじ軸１と送りナット２a,
２bを介して扉３a,３bを互いに接近するように動かす。
このとき、ねじ軸１の逆転,つまり扉閉じ方向の回転
は、一方向クラッチ５のスプラグ５bが働かない断状態
なので内輪５aから外輪５cには伝わらないから、外輪５
cがロックされていてもねじ軸１は自由に逆転し、扉３
a,３bは閉動する。いま、閉動中の扉３a,３bに物が挟ま
れると、逆転を阻止されたモータ４には過大電流が流れ
るので、制御部７の検知手段８は、ステップＳ３で肯と
判断して、ステップＳ４に進み、タイマ９で所定時間ｔ
1の計時を開始し、ステップＳ５で、電流過大のまま所
定時間ｔ1の計時が終了したか否かを判断し、肯と判断
すると、ステップＳ６に進む。The operation of the electric door opening / closing device having the above-described structure will be described below with reference to FIG. First, when the fully opened doors 3a and 3b are closed, as shown in FIG. 2A, the control unit 7 sets the electromagnetic lock device 6 to a state in which the outer ring 5c is locked by stopping the energization in step S1. S2
Then, the motor 4 is driven in reverse to drive the screw shaft 1 and the feed nut 2a,
The doors 3a and 3b are moved closer to each other via 2b.
At this time, the reverse rotation of the screw shaft 1, that is, the rotation in the door closing direction, is not transmitted from the inner ring 5 a to the outer ring 5 c because the sprag 5 b of the one-way clutch 5 does not work, so that the outer ring 5
Even if c is locked, the screw shaft 1 rotates freely and the door 3
a and 3b are closed. If an object is caught between the closing doors 3a and 3b, an excessive current flows through the motor 4 that has been prevented from reversing. Therefore, the detecting unit 8 of the control unit 7 determines that the answer is YES in step S3. Proceeding to step S4, the timer 9 sets the predetermined time t.
1 timekeeping starts, in step S5, it is determined whether still counting of the predetermined time t 1 of the current excessive is completed, when it is determined that affirmation, the flow proceeds to step S6.
【００１３】制御部７は、ステップＳ６で、電磁ロック
装置６による外輪５cのロックを通電により解除し、ス
テップＳ７で、モータ４を所定時間ｔ2だけ正転駆動し
てねじ軸１と送りナット２a,２bを介して扉３a,３bを互
いに離間するように動かす。すると、ねじ軸１の正転
は、スプラグ５bが働いて接状態になる一方向クラッチ
５の内輪５aから外輪５cに伝わるが、外輪５cのロック
が解除されているので、ねじ軸１は自由に正転できて、
扉３a,３bが100mmほど開動される。次いで、制御部７
は、ステップＳ８で、電磁ロック装置６を通電終了にし
て一方向クラッチ５の外輪５cをロックさせ、続いてス
テップＳ９で、モータ４を逆転駆動する。モータ４によ
るねじ軸１の逆転は、一方向クラッチ１の内輪５aから
外輪５cへを伝わらないので、外輪５cがロックされてい
ても、ねじ軸１は自由に逆転できて、扉３a,３bは閉動
される。最後に、両扉３a,３bが当接して、戸先の全閉
検知スイッチ１０が全閉検知信号を出力すると、制御部
７は、ステップＳ１０で扉全閉と判断して、扉閉じ動作
を終了する。The control unit 7, in step S6, and released by energizing the lock of the outer ring 5c by the electromagnetic locking device 6, in step S7, the motor 4 for a predetermined time t 2 driven forward by the feed screw shaft 1 and nut The doors 3a and 3b are moved so as to be separated from each other via 2a and 2b. Then, the forward rotation of the screw shaft 1 is transmitted from the inner ring 5a of the one-way clutch 5 which is brought into contact with the sprags 5b to the outer ring 5c, but since the lock of the outer ring 5c is released, the screw shaft 1 can be freely rotated. Can rotate forward,
The doors 3a and 3b are opened about 100 mm. Next, the control unit 7
In step S8, the energization of the electromagnetic lock device 6 is terminated to lock the outer race 5c of the one-way clutch 5, and then, in step S9, the motor 4 is driven to rotate in the reverse direction. Since the reverse rotation of the screw shaft 1 by the motor 4 does not propagate from the inner ring 5a of the one-way clutch 1 to the outer ring 5c, even if the outer ring 5c is locked, the screw shaft 1 can freely rotate reversely, and the doors 3a and 3b It is closed. Finally, when both doors 3a and 3b come into contact with each other and the fully closed detection switch 10 at the door end outputs a fully closed detection signal, the control unit 7 determines that the door is fully closed in step S10, and performs the door closing operation. finish.
【００１４】このように、ねじ軸１の扉開き方向への回
転のみを内輪５aから外輪５cに伝える一方向クラッチ５
と、非通電で外輪５cをロックする電磁ロック装置６と
により、停電時の扉開動が確実に阻止されるとともに、
閉動作中の扉３a,３bに物が挟まれると、電磁ロック装
置６のロック解除とモータ４の所定時間ｔ2の正転とに
より、扉３a,３bが適切な距離(例えば100mm)だけ自動的
に開かれた後に閉動されるので、上記扉３a,３bが電車
の扉である場合、エアタンク等の破損で扉が勝手に開い
たり、扉に乗客を挟んだまま電車が発車したりせず、扉
を強大な力で押し開いて挟んだ物を排除するいわゆる
「押し屋」をホームの各所に配置する必要もないうえ、
気温の変化で扉開閉速度が変動せず、従来の空気圧式の
扉開閉装置の種々の欠点を解消することができる。つま
り、扉に物を挟んだ場合、押し屋が駆けつける前に、制
御部７が自動的に押し屋の動作をしてしまうので、我国
のラッシュ事情に適合し、しかも乗客に優しい扉開閉装
置となる。なお、ステップＳ３で、戸挟みが生じず否の
場合は、扉全閉を判断するステップＳ１０に進み、ステ
ップＳ５で、戸挟みが所定時間ｔ1だけ継続しない場合
は、戸挟みを判断するステップＳ３に戻る。As described above, the one-way clutch 5 that transmits only the rotation of the screw shaft 1 in the door opening direction from the inner race 5a to the outer race 5c.
And the electromagnetic lock device 6 that locks the outer ring 5c without power supply, prevents the door from opening when a power failure occurs, and
Door 3a during the closing operation, when the object is sandwiched 3b, by the forward rotation of the predetermined time t 2 Unlocking and motor 4 of the electromagnetic locking device 6, the door 3a, 3b are suitable distance (e.g., 100 mm) Automatic When the doors 3a and 3b are train doors, the doors may open without permission due to damage to the air tank or the train may depart with the passenger sandwiched between the doors. In addition, there is no need to place so-called `` push shops '' at every part of the platform that push the door open with great force and remove the sandwiched objects.
The door opening / closing speed does not fluctuate due to a change in temperature, and various disadvantages of the conventional pneumatic door opening / closing device can be solved. In other words, when an object is sandwiched between the doors, the control unit 7 automatically performs the operation of the pusher before the pusher rushes, so that the door opening / closing device adapted to the rush situation in Japan and more passenger-friendly. Become. In step S3, in the case of absence does not occur Tohasami, the process proceeds to step S10 to determine the door fully closed, at step S5, if the Tohasami does not continue for a predetermined time t 1, to determine Tohasami step Return to S3.
【００１５】次に、全閉している扉３a,３bが開く場
合、図２(Ｂ)に示すように、制御部７は、ステップＳ１
１で、電磁ロック装置６を通電により外輪５cのロック
を解除する状態にし、ステップＳ１２で、モータ４を正
転駆動してねじ軸１と送りナット２a,２bを介して扉３
a,３bを互いに離間するように動かす。このとき、ねじ
軸１の正転,つまり扉開き方向の回転は、一方向クラッ
チ５のスプラグ５bが働く状態なので内輪５aから外輪５
cに伝わるが、外輪５cがロックされていないからねじ軸
１は自由に正転し、扉３a,３bは開動する。最後に、両
扉３a,３bが全開し、右扉３bの戸尻の当接により全開検
知スイッチ１１が全開検知信号を出力すると、制御部７
は、ステップＳ１１で扉全開と判断して、扉開き動作を
終了する。Next, when the fully closed doors 3a and 3b are opened, as shown in FIG. 2B, the control unit 7 executes step S1.
In step 1, the electromagnetic lock device 6 is turned on to release the lock of the outer ring 5c, and in step S12, the motor 4 is driven to rotate forward to rotate the door 3 through the screw shaft 1 and the feed nuts 2a, 2b.
Move a and 3b away from each other. At this time, the forward rotation of the screw shaft 1, that is, the rotation in the door opening direction, is in a state where the sprags 5b of the one-way clutch 5 are in operation, so that the inner ring 5a
The screw shaft 1 freely rotates forward because the outer ring 5c is not locked, and the doors 3a and 3b open. Finally, when both doors 3a and 3b are fully opened and the full open detection switch 11 outputs a full open detection signal by the contact of the door bottom of the right door 3b, the control unit 7
Determines that the door is fully opened in step S11, and ends the door opening operation.
【００１６】上記実施の形態では、扉３a,３bの全閉お
よび全開を検知する全閉検知スイッチ１０および全開検
知スイッチ１１を設けているので、扉の全閉,全開を確
実に検知して、制御部７による閉動,開動制御を終了さ
せることができるという利点がある。また、図２(Ａ)の
閉動制御で物が長時間に亘って扉に挟まれて、ステップ
Ｓ７が何度も繰り返される場合に対処するため、閉スタ
ートから所定時間経過してもステップＳ１０から全閉検
知信号が出力されない場合、制御部７に警報を出させる
ようにしてもよい。なお、全閉,全開検知スイッチは、
上記実施の形態のものに限られない。In the above embodiment, since the full-close detection switch 10 and the full-open detection switch 11 for detecting the full-close and full-open of the doors 3a and 3b are provided, the full-close and full-open of the door are reliably detected. There is an advantage that the closing / opening control by the control unit 7 can be terminated. Further, in order to cope with the case where the object is pinched by the door for a long time and the step S7 is repeated many times in the closing movement control of FIG. When the fully closed detection signal is not output from the control unit 7, the control unit 7 may output an alarm. The fully closed / full open detection switch is
The invention is not limited to the above embodiment.
【００１７】また、上記実施の形態では、検知手段８
が、モータ４に過大電流が所定時間継続して流れたこと
で戸挟みを検知するようにしているので、センサなどの
格別な部材を要さずに、簡素かつ安価に扉開閉装置を構
成できるという利点がある。なお、本発明の検知手段
は、上記実施の形態の検知手段８に限らず、タッチセン
サなどでもよく、一方向クラッチは、上記実施の形態の
スプラグ式のものに限られない。さらに、扉駆動手段と
してのモータ４は、摩耗部材がブラシだけで、パッキン
やピストンなどをもつ従来の空気圧式のシリンダよりも
遥かに摩耗部材が少ないので、メインテナンスが容易と
いう利点もある。また、本発明の扉電動開閉装置は、上
記実施の形態の電車の扉に限らず、他の扉にも適用でき
るのは勿論である。In the above embodiment, the detecting means 8
However, since the excessive current flows through the motor 4 for a predetermined time to detect the door jam, a door opening / closing device can be simply and inexpensively configured without requiring any special member such as a sensor. There is an advantage. The detecting means of the present invention is not limited to the detecting means 8 of the above embodiment, but may be a touch sensor or the like, and the one-way clutch is not limited to the sprag type of the above embodiment. Further, the motor 4 as the door driving means has an advantage that maintenance is easy because the wear member is only a brush and the number of wear members is far smaller than that of a conventional pneumatic cylinder having a packing and a piston. Further, the electric door opening / closing device of the present invention is not limited to the train door of the above embodiment, but can be applied to other doors.
【００１８】[0018]
【発明の効果】以上の説明で明らかなように、請求項１
の発明は、ねじ軸に螺合した送りナットに吊り下げた扉
を、上記ねじ軸の一端に連結したモータの正逆転により
開閉する扉電動開閉装置において、一方向クラッチの一
方を上記ねじ軸の他端に連結して,扉開き方向へのねじ
軸の回転力のみが他方に伝わるようにし、非通電時に上
記一方向クラッチの他方に連結してこれをロックし,通
電時に上記一方向クラッチの他方から切断されてロック
を解除する電磁ロック装置と、閉動作中の扉に物が挟ま
れたか否かを検知する検知手段とを設けるとともに、こ
の検知手段が物が挟まれたと検知したとき、制御部によ
って、上記電磁ロック装置への通電を開始し、上記モー
タを扉開き方向へ回転駆動した後、上記電磁ロック装置
への通電を終了し、かつ上記モータを扉閉じ方向へ回転
駆動するようにしているので、空気圧式の扉開閉装置の
ような気温の変化による開閉速度の変動や破損による扉
の開動がないうえ、停電時には一方向クラッチがロック
されて扉が開かないから、フェイセーフで安全性に優
れ、戸挟みが生じると扉が自動的に開動するから、扉を
強大な手の力で押し開く必要がなく、例えば混雑の激し
い我国の電車の乗客にも優しい扉電動開閉装置となる。As is apparent from the above description, claim 1
The invention provides a door electric opening / closing device that opens and closes a door suspended by a feed nut screwed to a screw shaft by forward and reverse rotation of a motor connected to one end of the screw shaft. Connected to the other end, so that only the torque of the screw shaft in the door opening direction is transmitted to the other, connected to the other one-way clutch when not energized and locked, and when energized the one-way clutch An electromagnetic lock device that is disconnected from the other side to release the lock, and a detection unit that detects whether an object is caught in the door during the closing operation are provided, and when the detection unit detects that the object is caught, The control unit starts energization of the electromagnetic lock device, and after rotating the motor in the door opening direction, terminates energization of the electromagnetic lock device and rotates the motor in the door closing direction. To As a result, there is no opening / closing of the door due to fluctuations in air temperature or opening / closing due to breakage as in a pneumatic door opening / closing device, and in the event of a power failure, the one-way clutch is locked and the door does not open, so it is safe and safe. Since the door is automatically opened when the door is caught, there is no need to push the door open with strong hand force. For example, a door electric opening / closing apparatus that is gentle to passengers of a congested Japanese train can be provided.
【００１９】請求項２の扉電動開閉装置は、上記検知手
段が、上記モータに過大電流が所定時間継続して流れた
か否かで、物が挟まれたか否かを検知するようになって
いるので、戸挟みを検知するセンサなどの格別な部材を
要さないので、簡素かつ安価に扉電動開閉装置を構成で
きる。According to a second aspect of the present invention, the detecting means detects whether or not an object has been caught by detecting whether or not an excessive current has continuously flowed through the motor for a predetermined time. Therefore, no special member such as a sensor for detecting the pinching of the door is required, so that the electric door opening / closing device can be configured simply and inexpensively.
【図１】 本発明の扉電動開閉装置の一例を示す全体図
である。FIG. 1 is an overall view showing an example of an electric door opening / closing device according to the present invention.
【図２】 図１の扉電動開閉装置の制御動作の流れを示
すフローチャートである。FIG. 2 is a flowchart showing a control operation flow of the electric door opening / closing device of FIG. 1;
１…ねじ軸、１a…左ねじ、１b…右ねじ、２a…左ねじ
送りナット、２b…右ねじ送りナット、３a,３b…扉、４
…モータ、５…一方向クラッチ、５a…内輪、５b…スプ
ラグ、５c…外輪、６…電磁ロック装置、７…制御部、
８…検知手段、９…タイマ、１０…全閉検知スイッチ、
１１…全開検知スイッチ。DESCRIPTION OF SYMBOLS 1 ... screw shaft, 1a ... left screw, 1b ... right screw, 2a ... left screw feed nut, 2b ... right screw feed nut, 3a, 3b ... door, 4
... motor, 5 ... one-way clutch, 5a ... inner ring, 5b ... sprag, 5c ... outer ring, 6 ... electromagnetic lock device, 7 ... control unit,
8 detection means, 9 timer, 10 full-close detection switch
11 Fully open detection switch.
Claims (2)
た扉を、上記ねじ軸の一端に連結したモータの正逆転に
より開閉する扉電動開閉装置において、 上記ねじ軸の他端に一方が連結されるとともに、扉開き
方向へのねじ軸の回転力のみが他方に伝わるように設け
られた一方向クラッチと、 非通電時に上記一方向クラッチの他方に連結して、この
他方をロックするとともに、通電時に上記一方向クラッ
チの他方から切断されてロックを解除する電磁ロック装
置と、 閉動作中の扉に物が挟まれたか否かを検知する検知手段
と、 この検知手段が物が挟まれたと検知したとき、上記電磁
ロック装置への通電を開始し、上記モータを扉開き方向
へ回転駆動した後、上記電磁ロック装置への通電を終了
し、かつ上記モータを扉閉じ方向へ回転駆動する制御部
を備えたことを特徴とする扉電動開閉装置。1. A door electric opening and closing device for opening and closing a door suspended by a feed nut screwed to a screw shaft by forward and reverse rotation of a motor connected to one end of the screw shaft, wherein one end is connected to the other end of the screw shaft. A one-way clutch provided so that only the rotational force of the screw shaft in the door opening direction is transmitted to the other, and connected to the other of the one-way clutch when not energized to lock the other, An electromagnetic lock device that is disengaged from the other one-way clutch to release the lock when energized, a detection unit that detects whether or not an object is caught by the door during the closing operation, and that the detection unit is caught by the object. When it is detected that the power supply to the electromagnetic lock device is started, the motor is driven to rotate in the door opening direction, then the power supply to the electromagnetic lock device is terminated, and the motor is driven to rotate in the door closing direction. Door electric opening and closing device, characterized in that with a control unit.
て、上記検知手段は、上記モータに過大電流が所定時間
継続して流れたか否かで、物が挟まれたか否かを検知す
ることを特徴とする扉電動開閉装置。2. The electric door opening and closing apparatus according to claim 1, wherein the detecting means detects whether or not an object has been caught by detecting whether or not an excessive current continuously flows through the motor for a predetermined time. A door electric opening and closing device characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34619597A JP3392741B2 (en) | 1997-12-16 | 1997-12-16 | Door electric switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34619597A JP3392741B2 (en) | 1997-12-16 | 1997-12-16 | Door electric switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11173003A true JPH11173003A (en) | 1999-06-29 |
| JP3392741B2 JP3392741B2 (en) | 2003-03-31 |
Family
ID=18381765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34619597A Expired - Fee Related JP3392741B2 (en) | 1997-12-16 | 1997-12-16 | Door electric switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3392741B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003137086A (en) * | 2001-11-02 | 2003-05-14 | Hitachi Ltd | Railway platform door control system |
| JP2003339576A (en) * | 2002-05-28 | 2003-12-02 | Matsushita Electric Works Ltd | Automatic opening/closing apparatus for toilet seat and toilet cover |
| KR101007187B1 (en) | 2008-12-02 | 2011-01-12 | 한국철도기술연구원 | Door opener of electric car |
| JP2012097442A (en) * | 2010-11-01 | 2012-05-24 | Toyo Electric Mfg Co Ltd | Electric door closing device for vehicle entrance door |
| EP2639131A1 (en) * | 2012-03-13 | 2013-09-18 | Pintsch Bamag Antriebs- und Verkehrstechnik GmbH | Automatic folding hinged door for railway vehicles, railway vehicle comprising a plurality of such doors and upgrade set for swinging folding doors of railway vehicles |
-
1997
- 1997-12-16 JP JP34619597A patent/JP3392741B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003137086A (en) * | 2001-11-02 | 2003-05-14 | Hitachi Ltd | Railway platform door control system |
| JP2003339576A (en) * | 2002-05-28 | 2003-12-02 | Matsushita Electric Works Ltd | Automatic opening/closing apparatus for toilet seat and toilet cover |
| KR101007187B1 (en) | 2008-12-02 | 2011-01-12 | 한국철도기술연구원 | Door opener of electric car |
| JP2012097442A (en) * | 2010-11-01 | 2012-05-24 | Toyo Electric Mfg Co Ltd | Electric door closing device for vehicle entrance door |
| EP2639131A1 (en) * | 2012-03-13 | 2013-09-18 | Pintsch Bamag Antriebs- und Verkehrstechnik GmbH | Automatic folding hinged door for railway vehicles, railway vehicle comprising a plurality of such doors and upgrade set for swinging folding doors of railway vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3392741B2 (en) | 2003-03-31 |
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