JPH0741274A - Door safety device of elevator - Google Patents

Door safety device of elevator

Info

Publication number
JPH0741274A
JPH0741274A JP18791993A JP18791993A JPH0741274A JP H0741274 A JPH0741274 A JP H0741274A JP 18791993 A JP18791993 A JP 18791993A JP 18791993 A JP18791993 A JP 18791993A JP H0741274 A JPH0741274 A JP H0741274A
Authority
JP
Japan
Prior art keywords
door
side door
car
obstacle
car side
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.)
Pending
Application number
JP18791993A
Other languages
Japanese (ja)
Inventor
Eiji Takahashi
英二 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP18791993A priority Critical patent/JPH0741274A/en
Publication of JPH0741274A publication Critical patent/JPH0741274A/en
Pending legal-status Critical Current

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  • Elevator Door Apparatuses (AREA)

Abstract

PURPOSE:To provide a door safety device of an elevator which can surely detect any obstacle with no-contact extending over the whole territory of closing operation at closing the door and can perfectly prevent a pinched trouble. CONSTITUTION:A pair of photoelectric switches 6 which are moved synchronizing with movement of a car side door 2 are provided preceding the extreme end parts of the car side door 2 on right and left both sides of the lower part of the car side door 2. This photoelectric switch 6 is arranged on the preceding position from the extreme end of the car side door 2 by an appropriate margin against the closing operation distance of the car side door 2 from detecting an obstacle to reversing and actually shifting to the reopening motion.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、エレベータのドア安全
装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door safety device.

【0002】[0002]

【従来の技術】エレベータにおける利用上の事故で最も
多く発生しているのは、ドア閉時におけるはさまれ事故
である。そこで、このドア閉時に、はさまれ事故の発生
するのを防ぐため、事前に障害物を検出する方法がとら
れている。
2. Description of the Related Art The most frequent accidents in elevator use are pinching accidents when the door is closed. Therefore, when the door is closed, a method of detecting an obstacle in advance is taken in order to prevent the occurrence of a pinch accident.

【0003】一般的には、ドアの移動先端部に機械式ド
アセーフティを取付け、障害物に当たると機械的にリミ
ットスイッチが動作して障害物を検出し、ドアを反転リ
オープンさせることにより、はさまれ事故を防止するよ
うにしている。
Generally, a mechanical door safety is attached to a moving front end of a door, and when an obstacle is hit, a limit switch is mechanically operated to detect the obstacle, and the door is reversed and reopened. I am trying to prevent a trapped accident.

【0004】また、障害物を非接触で検出する方法とし
ては、一例を図4に示すようにドア開閉時の移動部近傍
のかご側又はホール側に固定式の光電スイッチを1対も
しくは2対取付け、その光軸上に障害物が存在する場合
にこれを検出してドアを反転リオープンさせる方法、そ
の他かご上部より乗場床面へ向って超音波を発信し、そ
の反射波から障害物を検出し、ドアを反転リオープンさ
せる方法、機械式ドアセーフティ内に設置されたアンテ
ナのもつ対地静電容量の変化から障害物を検出してドア
を反転リオープンさせるタッチレスドアセーフティ方法
がある。
Further, as a method of detecting an obstacle without contact, as shown in FIG. 4, one or two pairs of fixed photoelectric switches are provided on the car side or the hall side near the moving part when the door is opened and closed. Install it, and if there is an obstacle on its optical axis, detect it and reopen the door.Otherwise, ultrasonic waves are transmitted from the top of the car toward the floor of the platform, and the obstacle is reflected from the reflected wave. There are a method of detecting and reopening the door by reversing, and a method of touchless door safety reversing and reopening the door by detecting an obstacle from the change in the capacitance to ground of the antenna installed in the mechanical door safety.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、一般的
に用いられている機械式ドアセーフティは、障害物に当
ってからリミットスイッチを動作させてドアを反転リオ
ープンさせるので、障害物の検出時点が遅く、実際に機
械式ドアセーフティが障害物を検出してからドアが反転
するまでドアが閉動作を続行するため、大形のドアやア
ップスライド式のドア等では特にはさまれ事故を完全に
防止することが困難となっていた。
However, in the mechanical door safety generally used, the limit switch is operated and the door is inverted and reopened after hitting an obstacle, so that the time when the obstacle is detected is Slow, since the door continues to close until the door is flipped after the mechanical door safety actually detects an obstacle, it is especially caught in large doors and upsliding doors, and accidents are completely caught. It was difficult to prevent.

【0006】また、非接触で障害物を検出する一般的な
光電スイッチを用いる方法では、光電スイッチが取付け
られている高さの光軸上の障害物しか検出できず、ドア
の閉動作時全ての領域に亘る障害物の検出ができないと
いう欠点があった。
Further, in the method of using a general photoelectric switch which detects an obstacle without contact, only an obstacle on the optical axis at the height where the photoelectric switch is attached can be detected, and it is possible to detect all obstacles when the door is closed. There is a drawback that obstacles cannot be detected over the area of.

【0007】一方、超音波ドアセーフティやタッチレス
ドアセーフティ等のドア安全装置は、高価であり、ま
た、誤検出防止のためにドア周りの材質の制限や乗場付
近の他の物の配置や電波使用上等の制約があり、所望の
ドア安全装置を選択し難い欠点があった。
On the other hand, door safety devices such as ultrasonic door safety and touchless door safety are expensive, and in order to prevent erroneous detection, restrictions on materials around the door, placement of other objects near the hall, and radio waves. There is a drawback in that it is difficult to select a desired door safety device because of restrictions in use.

【0008】そこで、本発明の目的は、ドア閉時におい
て、障害物を、閉動作の全ての領域に亘り非接触で確実
に検出でき、はさまれ事故を完全に防止できるエレベー
タのドア安全装置を提供することにある。
Therefore, an object of the present invention is to provide an elevator door safety device capable of surely detecting an obstacle in a non-contact manner over the entire region of the closing operation when the door is closed and completely preventing a pinched accident. To provide.

【0009】[0009]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、かご室に移動自在に設けたかご側ドアも
しくは乗場に移動自在に設けたホール側ドア又はかご側
ドアおよびホール側ドアの閉動作時における移動先端部
に、障害物を検出する光電スイッチを装着して成り、こ
の光電スイッチを、かご側ドアおよびホール側ドアが反
転しリオープンするまでに移動する距離以上先行した位
置に配置するようにしたものである。
In order to achieve the above object, the present invention provides a car side door movably provided in a cab or a hall side door or a car side door and a hall side movably provided in a landing. A photoelectric switch that detects an obstacle is attached to the moving tip of the door when the door is closed, and the photoelectric switch is moved over the distance that the car-side door and the hall-side door move before reversing and reopening. It is arranged to be placed in a position.

【0010】[0010]

【作用】本発明によれば、非接触で、かご側ドアやホー
ル側ドアの閉動作時に、障害物を検出時点よりかご側ド
アやホール側ドアが実際に反転しリオープンするまでの
遅れを見込んで早い時点で検出し、しかも光電スイッチ
が移動することにより、かご側ドアやホール側ドアの閉
動作する全ての領域における障害物の検出が可能とな
り、かご側ドアやホール側ドアによるはさまれ事故を確
実に防ぐことができる。
According to the present invention, when the car-side door or the hall-side door is closed without contact, there is a delay from the time when the obstacle is detected until the car-side door or the hall-side door is actually inverted and reopened. By detecting at an early point in time, and by moving the photoelectric switch, it is possible to detect obstacles in all areas where the car side door and hall side door are closed. It can prevent accidents.

【0011】[0011]

【実施例】以下、本発明の実施例を図面を参照して説明
する。図1は、本発明の一実施例を示す正面図、図2
は、図1のA−A断面図、図3は、本発明の一実施例の
要部の拡大図である。図1,図2および図3において、
1は図示しない巻上機に懸架されて昇降路を昇降するか
ご室で、このかご室1の正面側出入口には、アップスラ
イド式のかご側ドア2が図示しない機構部を介して昇降
自在に設けられ、このかご側ドア2に対向し、かつかご
側ドア2に連動して昇降するホール側ドア3が乗場4に
設けられている。
Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of the present invention, FIG.
1 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is an enlarged view of a main part of one embodiment of the present invention. In FIGS. 1, 2 and 3,
1 is a car room which is suspended by a hoist (not shown) to ascend and descend in a hoistway. At the front door of the car room 1, an up-sliding car side door 2 is vertically movable through a mechanism part (not shown). A hall side door 3 that is provided and faces the car side door 2 and that moves up and down in conjunction with the car side door 2 is provided in the hall 4.

【0012】かご側ドア2の下部には、水平方向に沿っ
た上下移動可能の機械式ドアセーフティ5が設けられ、
左右両側には、かご側ドア2の先端部より先行し、かご
側ドア2の移動に同期して移動する一対の光電スイッチ
6が設けられている。この光電スイッチ6は、機械式ド
アセーフティ5より突出した位置にあり、かつ、障害物
を検出してかご側ドア2が反転しリオープン動作に実際
移行するまでのかご側ドア2の閉動作距離に、適宜の余
裕度を持たせた分だけがかご側ドア2の先端より先行し
た位置に、かご側ドア2が開閉動しているとき位置する
ようになっている。
At the lower part of the car side door 2, there is provided a mechanical door safety 5 which is vertically movable along the horizontal direction.
A pair of photoelectric switches 6 are provided on both the left and right sides, which precede the tip of the car-side door 2 and move in synchronization with the movement of the car-side door 2. This photoelectric switch 6 is in a position protruding from the mechanical door safety 5, and the closing operation distance of the car side door 2 until an obstacle is detected and the car side door 2 reverses and actually shifts to a reopening operation. In addition, only a portion having an appropriate margin is located at a position preceding the tip of the car side door 2 when the car side door 2 is opened and closed.

【0013】一方、光電スイッチ6は、かご側ドア2に
支持部材7およびスプリング(図示しない)を介して前
後進可能に設けられ、かご側ドア2の閉動作時において
光電スイッチ6がかご室1の床面に当たったときには、
かご側ドア2に設けた開口部2aから内部へ後退し、か
ご側ドア2の閉動作に支障を与えないようになってい
る。また、かご側ドア2の全閉手前で、光電スイッチ6
がかご室1の床面に到達した後かご側ドア2の内部に後
退するとき、光軸が遮断されて誤動作するのを防ぐた
め、光電スイッチ6が床面に到達したときから動作する
(かご側ドア2によって)スイッチ(図示しない)を設
けて、このスイッチによって光電スイッチ6の機能が解
除される構成としている。
On the other hand, the photoelectric switch 6 is provided on the car side door 2 so as to be able to move forward and backward through a supporting member 7 and a spring (not shown), and when the car side door 2 is closed, the photoelectric switch 6 is operated. When you hit the floor of
The car 2 is retracted inward from an opening 2a provided in the car side door 2 so as not to hinder the closing operation of the car side door 2. Also, before the car door 2 is fully closed, the photoelectric switch 6
When the photoelectric switch 6 reaches the floor surface in order to prevent the optical axis from being cut off and malfunctioning when the car is retracted into the car door 2 after reaching the floor surface of the car room 1 (car A switch (not shown) is provided by the side door 2 and the function of the photoelectric switch 6 is released by this switch.

【0014】次に、本発明の実施例の作用を説明する。
かご側ドア2の閉動作時において、障害物が存在すると
これを光電スイッチ6が検出し、かご側ドア2をホール
側ドア3と共に反転しリオープンさせる。このとき、光
電スイッチ6は、障害物の検出時点より実際にかご側ド
ア2が反転しリオープンする動作に移行するまでの距離
に余裕を持たせた分だけ早く検出するので、かご側ドア
2やホール側ドア3によるはさまれ事故を防ぐことがで
きる。
Next, the operation of the embodiment of the present invention will be described.
At the time of closing operation of the car side door 2, if an obstacle is present, the photoelectric switch 6 detects it, and the car side door 2 and the hall side door 3 are inverted and reopened. At this time, the photoelectric switch 6 detects the obstacle earlier than the time when the obstacle is detected, by an amount that has a margin in the distance until the car door 2 actually reverses and reopens. It is possible to prevent an accident due to being pinched by the door 3 on the hall side.

【0015】以上のような本実施例と固定して設けられ
た光電スイッチによる従来の非接触式のドア安全装置を
比較すると、従来の方式においては光電スイッチが取付
けられた高さ位置の光軸上の障害物しか検出できなかっ
たのに対し、本実施例ではかご側ドア2の閉動作と同期
して光電スイッチ6が移動するため、かご側ドア2の閉
動作における全領域に亘り障害物の検出が可能となり、
さらに安全性の向上を図ることができる。
Comparing this embodiment with the conventional non-contact type door safety device using the photoelectric switch fixedly provided, in the conventional system, the optical axis at the height position where the photoelectric switch is mounted is compared. While only the above obstacle can be detected, in this embodiment, the photoelectric switch 6 moves in synchronization with the closing operation of the car side door 2, so that the obstacle is covered over the entire area in the closing operation of the car side door 2. Can be detected,
Further, the safety can be improved.

【0016】また、超音波式ドアセーフティやタッチレ
ス式ドアセーフティと比較すると、本実施例においては
従来から用いられている光電スイッチ6を一対用いるこ
とにより実現できるため、安価であり、使用上の制約も
緩和され、製作が容易になる。
Further, in comparison with ultrasonic type door safety and touchless type door safety, this embodiment can be realized by using a pair of photoelectric switches 6 which have been conventionally used, so that it is inexpensive and practical. The restrictions are relaxed and the production becomes easier.

【0017】さらに、反転しリオープンさせる信号を出
力してから実際にかご側ドア2が反転しリオープンの動
作に移行するまでに時間がかかるアップスライド式ドア
や大型ドアには、本実施例を適用することにより確実に
はさまれ事故を防止できるので効果的である。
Further, this embodiment is applicable to an up-sliding door or a large-sized door in which it takes time for the car-side door 2 to actually reverse and shift to the reopening operation after the signal for reversing and reopening is output. By applying the method, it is possible to prevent the accident without being pinched, which is effective.

【0018】なお、以上説明した実施例は、アップスラ
イド式のドア構造に適用したものであるが、中央開き,
横開きのドア構造においても、光電スイッチをドアの移
動部先端の上下両サイドに設け、光電スイッチの光軸を
鉛直方向とすることにより適用できる。また、図4に示
す従来の光電スイッチ6を固定取付式としたドア安全装
置に本発明を組合わせた方式としてもよい。
Although the embodiment described above is applied to an upslide type door structure,
Even in a laterally open door structure, photoelectric switches are provided on both upper and lower sides of the front end of the moving part of the door, and the optical axis of the photoelectric switch is in the vertical direction. Alternatively, the conventional photoelectric switch 6 shown in FIG. 4 may be a fixed type door safety device in which the present invention is combined.

【0019】[0019]

【発明の効果】以上説明したように本発明によれば、か
ご室に移動自在に設けたかご側ドアもしくは乗場に移動
自在に設けたホール側ドア又はかご側ドアおよびホール
側ドアの閉動作時における移動先端部に、障害物を検出
する光電スイッチを装着して成り、この光電スイッチ
を、かご側ドアおよびホール側ドアが反転しリオープン
するまでに移動する距離以上先行した位置に配置するよ
うにしているので、ドア開閉時において、障害物を、閉
動作の全ての領域に亘り非接触で確実に検出でき、はさ
まれ事故を完全に防止できるエレベータのドア安全装置
を提供できる。
As described above, according to the present invention, when the car side door movably provided in the cab or the hall side door movably provided in the hall or the car side door and the hall side door are closed. A photoelectric switch for detecting an obstacle is attached to the moving front end of the car, and the photoelectric switch is placed at a position ahead of the distance that the car side door and the hall side door move before reversing and reopening. As a result, it is possible to provide an elevator door safety device capable of reliably detecting an obstacle in a non-contact manner over the entire region of the closing operation when the door is opened / closed and completely preventing a pinch accident.

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

【図1】本発明の一実施例を示す正面図。FIG. 1 is a front view showing an embodiment of the present invention.

【図2】図1のA−A断面図。FIG. 2 is a sectional view taken along line AA of FIG.

【図3】本発明の一実施例の要部を示す拡大図。FIG. 3 is an enlarged view showing a main part of an embodiment of the present invention.

【図4】従来のエレベータのドア安全装置を示す縦断面
図。
FIG. 4 is a vertical cross-sectional view showing a conventional elevator door safety device.

【符号の説明】[Explanation of symbols]

1…かご室、2…かご側ドア、3…ホール側ドア、4…
乗場、5…機械式ドアセーフティ、6…光電スイッチ、
7…支持部材。
1 ... Car room, 2 ... Car door, 3 ... Hall door, 4 ...
Landing hall, 5 ... Mechanical door safety, 6 ... Photoelectric switch,
7 ... Support member.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 かご室に移動自在に設けたかご側ドアも
しくは乗場に移動自在に設けたホール側ドア又は前記か
ご側ドアおよび前記ホール側ドアの閉動作時における移
動先端部に、障害物を検出する光電スイッチを装着して
成り、この光電スイッチを、前記かご側ドアおよび前記
ホール側ドアが反転しリオープンするまでに移動する距
離以上先行した位置に配置するようにしたことを特徴と
するエレベータのドア安全装置。
1. An obstacle is attached to a car-side door movably provided in a car room, a hall-side door movably provided in a hall, or a moving front end portion of the car-side door and the hall-side door when the door is closed. A photoelectric switch for detection is mounted, and the photoelectric switch is arranged at a position ahead of the distance moved by the car side door and the hall side door before reversing and reopening. Elevator door safety device.
【請求項2】 かご室又は乗場におけるかご側ドア又は
ホール側ドアの移動範囲内に光電スイッチを装着した請
求項1記載のエレベータのドア安全装置。
2. The elevator door safety device according to claim 1, wherein a photoelectric switch is mounted within a moving range of a car side door or a hall side door in a car room or a hall.
JP18791993A 1993-07-29 1993-07-29 Door safety device of elevator Pending JPH0741274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18791993A JPH0741274A (en) 1993-07-29 1993-07-29 Door safety device of elevator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18791993A JPH0741274A (en) 1993-07-29 1993-07-29 Door safety device of elevator

Publications (1)

Publication Number Publication Date
JPH0741274A true JPH0741274A (en) 1995-02-10

Family

ID=16214505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18791993A Pending JPH0741274A (en) 1993-07-29 1993-07-29 Door safety device of elevator

Country Status (1)

Country Link
JP (1) JPH0741274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012025520A (en) * 2010-07-22 2012-02-09 Mitsubishi Electric Corp Device for driving elevator door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012025520A (en) * 2010-07-22 2012-02-09 Mitsubishi Electric Corp Device for driving elevator door

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