JP5254566B2 - Elevator door equipment - Google Patents

Elevator door equipment Download PDF

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JP5254566B2
JP5254566B2 JP2007115592A JP2007115592A JP5254566B2 JP 5254566 B2 JP5254566 B2 JP 5254566B2 JP 2007115592 A JP2007115592 A JP 2007115592A JP 2007115592 A JP2007115592 A JP 2007115592A JP 5254566 B2 JP5254566 B2 JP 5254566B2
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door
detection range
elevator
car
entrance
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JP2008273638A (en
JP2008273638A5 (en
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真剣 山本
光 田渕
満 坂井
崇 福田
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Hitachi Ltd
Hitachi Building Systems Co Ltd
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Hitachi Ltd
Hitachi Building Systems Co Ltd
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Priority to JP2007115592A priority Critical patent/JP5254566B2/en
Priority to CN200810092350XA priority patent/CN101293613B/en
Publication of JP2008273638A publication Critical patent/JP2008273638A/en
Priority to HK09101489.7A priority patent/HK1121432A1/en
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Description

本発明は、エレベータの出入口に近づく乗降客や物を検出するエレベータのドア装置に関する。   The present invention relates to an elevator door device that detects passengers and objects approaching an elevator doorway.

乗かごに乗り降りする乗降客がドアに衝突する事故を防止するため、出入口に近づく乗降客を検出しドアの開閉動作を制御するものとして従来、乗降客を検出する検出手段の検出範囲を、乗降客の乗り降りする移動方向に狭く、かつ、この移動方向と直交する方向に広く設定し、乗降客が乗かご内に乗り込んだり乗かごから降りたりする際に、乗場側に位置する乗降客を乗かご出入口の幅方向いずれの位置でも検出することを可能としたものが提案されている（例えば、特許文献１参照）。
特開平６−１６３７３号公報（段落番号００１３〜００１５、図１） In order to prevent passengers getting in and out of the car from colliding with the door, the detection range of the detection means for detecting passengers is conventionally considered as a means of detecting the passengers approaching the entrance and controlling the opening and closing operation of the door. It is set narrowly in the direction in which the passengers get on and off and wide in the direction perpendicular to the direction of movement, and when passengers get in or out of the car, they get on and off the passengers located on the landing side. There has been proposed one capable of detecting at any position in the width direction of the car doorway (see, for example, Patent Document 1).
JP-A-6-16373 (paragraph numbers 0013 to 0015, FIG. 1)

前述した従来のものでは、乗かご内の乗客を検出することなく、乗場側に位置する乗降客を乗かご出入口の幅方向いずれの位置でも検出することができるが、検出範囲が広いため、閉じてくるドアを検出してしまう恐れがある。このため、乗かごが着床しドアが全開しているときに検出手段を検出状態とするとともに、ドアの閉扉動作に応じて検出手段を非検出状態とする必要があり、したがって、閉扉動作中に乗かごに乗り込もうとする乗客を検出することはできないという問題があった。   In the above-described conventional apparatus, passengers located on the landing side can be detected at any position in the width direction of the car entrance without detecting passengers in the car. There is a risk of detecting the incoming door. For this reason, it is necessary to set the detection means to the detection state when the passenger car has landed and the door is fully open, and to set the detection means to the non-detection state according to the door closing operation. There was a problem that it was not possible to detect passengers trying to get into the car.

本発明は、前述した従来技術における実状からなされたもので、その目的は、閉扉動作中に乗かごに乗り込もうとする乗客を検出することのできるエレベータのドア装置を提供することにある。   The present invention has been made from the above-described prior art, and an object of the present invention is to provide an elevator door device capable of detecting a passenger who is about to enter the car during the closing operation.

前記目的を達成するために、本発明に係る発明は、乗かごの出入口に立設され中央部から左右に開閉可能なドアと、このドア上部に取付けられ前記ドアを開閉駆動するドア開閉手段と、前記出入口の上方に設置され、前記出入口を通過する物体を検出する検出手段を備えたエレベータのドア装置において、前記検出手段は、前記出入口の幅方向中央に配置され赤外線を投受光する投受光部を有し、投光した赤外線が物体に当たり反射した反射光により当該物体を検出する反射型のビームセンサからなり、その検出範囲を、ドア通過位置にあって前記出入口の幅方向に１００〜３００ｍｍの値に設定するとともにその検出範囲の中心軸が前記出入口中心から左右どちらか一方に芯ずれして設定され、前記赤外線の投光軸を、乗場方向に所定角度傾けたことを特徴としている。 In order to achieve the above-mentioned object, the invention according to the present invention comprises a door standing at the entrance of a passenger car and capable of opening and closing from the center to the left and right, and a door opening / closing means attached to the upper portion of the door for opening and closing the door. In the elevator door apparatus provided with a detecting means that is installed above the doorway and detects an object passing through the doorway, the detecting means is arranged at the center in the width direction of the doorway to project and receive light. And a reflection type beam sensor that detects the object by the reflected light reflected by the projected infrared ray hitting the object. The detection range is 100 to 300 mm in the width direction of the doorway at the door passing position. And the center axis of the detection range is set to be shifted from the center of the entrance to the left or right, and the infrared projection axis is set at a predetermined angle in the landing direction. It is characterized by tilting.

このように本発明に係る発明は、反射型のビームセンサの検出範囲をドア通過位置にあって出入口の幅方向に１００〜３００ｍｍの値に設定することにより、ドア全閉間際まで検出手段であるビームセンサを検出状態とすることが可能となる。また、赤外線の投光軸が乗場方向に所定角度傾けられていることから、乗かご内の乗客を不必要に検出することなく、確実に乗場側の乗降客を検出することができる。これによって、乗かごに乗り込もうとする乗客を乗場側でドア全閉間際まで検出することができる。また、エレベータの利用状況に応じ、検出手段の検出範囲の中心軸を出入口中心から左右どちらか一方に芯ずれするように設定することで、検出率を上げることができる。なお、ビームセンサの検出範囲をドア通過位置にあって出入口の幅方向に１００ｍｍ以上の値に設定したが、これは赤外線のビーム幅を１００ｍｍ以下の値にまで細くすることが困難なためである。また、ビームセンサの検出範囲をドア通過位置にあって出入口の幅方向に３００ｍｍ以下の値に設定したが、これは乗かごに乗り込もうとする乗客を可能な範囲でドア全閉間際まで検出するためである。 Thus the invention according to the present onset Ming, by setting the value of 100~300mm in the width direction of the doorway of the detection range of the reflection-type photoelectric sensor which are in the door passage position, the detection means to the time the door all閉間A certain beam sensor can be brought into a detection state. Further, since the infrared light projecting axis is inclined at a predetermined angle in the landing direction, it is possible to reliably detect passengers on the landing side without unnecessarily detecting passengers in the car. As a result, it is possible to detect a passenger who is about to enter the car until the door is fully closed on the landing side. Further, the detection rate can be increased by setting the center axis of the detection range of the detection means so as to be misaligned from the center of the entrance to the left or right according to the use situation of the elevator. Note that the detection range of the beam sensor is set to a value of 100 mm or more in the width direction of the entrance and exit at the door passing position. This is because it is difficult to reduce the infrared beam width to a value of 100 mm or less. . In addition, the detection range of the beam sensor is set to a value of 300 mm or less in the width direction of the entrance / exit at the door passage position, but this is to detect a passenger who is going to get into the car as far as possible until the door is fully closed. It is.

本発明によれば、乗かごに乗り込もうとする乗客を乗場側でドア全閉間際まで検出することができることから、乗客がドアに衝突する事故を低減し、エレベータの安全性の向上を図ることができる。   According to the present invention, it is possible to detect a passenger who is going to get into the car until the door is fully closed on the landing side, so that it is possible to reduce an accident that the passenger collides with the door and to improve the safety of the elevator. it can.

以下、本発明に係るエレベータのドア装置の実施の形態を図に基づいて説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an elevator door device according to the present invention will be described with reference to the drawings.

図１は本発明に係るエレベータのドア装置の第１の実施形態における正面図、図２は第１の実施形態における上面図である。   FIG. 1 is a front view of an elevator door device according to a first embodiment of the present invention, and FIG. 2 is a top view of the first embodiment.

第１の実施形態のエレベータのドア装置は図１に示すように、かごドア１ａ、１ｂはハンガ２ａ、２ｂによりドアレール枠３に設置されたドアレール４に懸架され、ハンガローラ５ａ、５ｂ、５ｃ、５ｄがドアレール４上を転動することで開閉自由な構造となっており、ドアレール枠３、ドアレール４、および図示しないモータなどからなるドア開閉手段により乗かご６の出入口を開閉駆動される。また、かごドア１ａ、１ｂの少なくとも一方、たとえば、かごドア１ｂにはドアセフティ７が備えられているとともに、かごドア１ａにおけるドアセフティ７と対向する位置にはカバー８が取付けられており、ドアセフティ７が物体に当接し反閉扉方向に変位することに応じて、かごドア１ａ、１ｂの全開保持、あるいは開反転動作を行う安全装置を構築している。さらに、乗場１３側には図２に示すように、かごドア１ａ、１ｂと対向可能な乗場ドア９ａ、９ｂが備えられており、これらの乗場ドア９ａ、９ｂはかごドア１ａ、１ｂと同期して開閉する。   In the elevator door device of the first embodiment, as shown in FIG. 1, the car doors 1a and 1b are hung on the door rail 4 installed on the door rail frame 3 by hangers 2a and 2b, and hanger rollers 5a, 5b, 5c and 5d. Can be opened and closed freely by rolling on the door rail 4, and the door 6 is opened and closed by door opening / closing means including the door rail frame 3, the door rail 4, and a motor (not shown). Further, at least one of the car doors 1a and 1b, for example, the car door 1b is provided with a door safety 7, and a cover 8 is attached at a position facing the door safety 7 in the car door 1a. A safety device is constructed that holds the car doors 1a and 1b fully open or opens and reverses when the safety 7 abuts against an object and is displaced in the counter-closing direction. Further, as shown in FIG. 2, the hall 13 is provided with hall doors 9a and 9b that can face the car doors 1a and 1b, and these hall doors 9a and 9b are synchronized with the car doors 1a and 1b. Open and close.

そして、第１の実施形態のドア装置は、出入口を通過する物体を検出する検出手段として、出入口の幅方向中央、たとえば、ドアレール４の中央に取付けられ赤外線を投受光する図示しない投受光部を有し、投光した赤外線が物体に当たり反射した反射光により当該物体を検出する反射型のビームセンサ１１を備えている。また、ビームセンサ１１の検出範囲１２を、ドア通過位置（ｈ１）にあって出入口の幅方向に、たとえば、２００ｍｍの値に設定しているとともに、赤外線の投光軸を乗場１３方向に所定角度傾けている。また、検出範囲１２の中心軸を出入口中心と重なるように設定することで、出入口の左右方向にあって平均して乗降客を検出するようになっている。 The door apparatus of the first embodiment, as detection means for detecting an object passing through the doorway, the center in the width direction of the doorway, for example, light emitting and receiving (not shown) for emitting and receiving infrared rays are mounted in the center of the door rail 4 And a reflection type beam sensor 11 that detects the object by reflected light reflected by the projected infrared rays upon the object. Further, the detection range 12 of the beam sensor 11 is set at a door passage position (h1) in the width direction of the entrance / exit, for example, a value of 200 mm, and the infrared light projection axis is set at a predetermined angle in the direction of the landing 13. Tilt. Further, by setting the central axis of the detection range 12 so as to overlap the center of the doorway, passengers are detected on average in the left-right direction of the doorway.

第１の実施形態にあっては、乗かご６の着床に応じてドア１ａ、１ｂ、９ａ、９ｂが開扉し、かごドア１ａとかごドア１ｂ間の間隙、および乗場ドア９ａと乗場ドア９ｂ間の間隙が２００ｍｍを超えたことに応じて、すなわち、ドア通過位置におけるビームセンサ１１の検出範囲１２より大きくなったことに応じてビームセンサ１１は検出状態となり、投光部から赤外線を投光する。ビームセンサ１１の検出状態はドア１ａ、１ｂ、９ａ、９ｂが全開した後、閉扉動作に移り、再びかごドア１ａとかごドア１ｂ間の間隙、および乗場ドア９ａと乗場ドア９ｂ間の間隙が２００ｍｍとなるまで続けられる。そして、ビームセンサ１１が検出状態にあるときに検出範囲１２内に乗降客が入ると、乗降客により赤外線が反射され、これをビームセンサ１１の受光部により受光し、検出信号を出力する。この検出信号に応じて図示しない制御手段はドア１ａ、１ｂ、９ａ、９ｂを開反転動作する。   In the first embodiment, the doors 1a, 1b, 9a, 9b are opened according to the landing of the car 6, the gap between the car door 1a and the car door 1b, and the landing door 9a and the landing door. The beam sensor 11 is in a detection state in response to the gap between 9b exceeding 200 mm, that is, in response to being larger than the detection range 12 of the beam sensor 11 at the door passing position, and infrared rays are projected from the light projecting unit. Shine. The detection state of the beam sensor 11 is that the doors 1a, 1b, 9a, 9b are fully opened and then the door closing operation is started. The gap between the car door 1a and the car door 1b and the gap between the landing door 9a and the landing door 9b are 200 mm. Continue until. When a passenger enters the detection range 12 when the beam sensor 11 is in a detection state, infrared rays are reflected by the passenger, and this is received by the light receiving unit of the beam sensor 11 and a detection signal is output. In response to this detection signal, a control means (not shown) opens and reverses the doors 1a, 1b, 9a, 9b.

また、ビームセンサ１１から投光される赤外線の投光軸を乗場方向に所定角度傾けているが、この角度の値は検出性能に大きくかかわってくる。たとえば、乗場１３方向への傾きが少ない場合、乗場ドア９ａ、９ｂに近づかないと乗客を検出できないため、たとえ乗り込んでくる乗客を検出できたとしても、ドア１ａ、１ｂ、９ａ、９ｂの開反転動作が間に合わず乗客がドア１ａ、１ｂ、９ａ、９ｂに衝突する恐れがある。逆に、乗場１３方向への傾きが大きい場合、エレベータ前を通行する一般客や、次の乗場呼びを待つ乗客を検出してしまい、ドア１ａ、１ｂ、９ａ、９ｂの開反転動作が不必要に繰り返される恐れがある。そこで、赤外線の投光軸を乗場１３方向に所定角度傾けるその値は、検出率が高く、かつ、誤動作が少ない値に設定する必要がある。   In addition, the infrared projection axis projected from the beam sensor 11 is tilted by a predetermined angle in the landing direction. The value of this angle greatly affects the detection performance. For example, when the inclination in the direction of the landing 13 is small, passengers cannot be detected unless they approach the landing doors 9a and 9b. Therefore, even if passengers can be detected, the doors 1a, 1b, 9a, and 9b are opened and reversed. There is a possibility that the passenger cannot collide with the doors 1a, 1b, 9a, and 9b because the operation is not in time. On the other hand, when the inclination in the direction of the hall 13 is large, a general customer who passes in front of the elevator or a passenger waiting for the next hall call is detected, and the opening and reversing operation of the doors 1a, 1b, 9a, 9b is unnecessary. There is a risk of being repeated. Therefore, it is necessary to set the value of tilting the infrared light projection axis by a predetermined angle in the direction of the hall 13 to a value with a high detection rate and few malfunctions.

第１の実施形態によれば、乗かご６に乗り込もうとする乗客を乗場１３側でドア全閉間際まで検出することができることから、乗客がドア１ａ、１ｂ、９ａ、９ｂに衝突する事故を低減し、エレベータの安全性の向上を図ることができる。   According to the first embodiment, since passengers entering the car 6 can be detected until the door is fully closed on the landing 13 side, the number of accidents in which the passenger collides with the doors 1a, 1b, 9a, 9b is reduced. Thus, the safety of the elevator can be improved.

なお、第１の実施形態では、ビームセンサ１１の検出範囲１２を、ドア通過位置にあって出入口の幅方向に２００ｍｍの値に設定したが、本発明はこれに限らず、エレベータの利用状況等に応じて１００〜３００ｍｍの値の中で任意に設定することができる。ここで、ビームセンサ１１の検出範囲１２をドア通過位置にあって出入口の幅方向に１００〜３００ｍｍの値としたのは、赤外線のビーム幅を１００ｍｍ以下の値にまで細くすることが困難なこと、また、３００ｍｍ以上では、乗かご６に乗り込もうとする乗客をドア全閉間際で検出することが難しくなるためである。また、第１の実施形態ではビームセンサ１１の検出範囲１２を、ドア通過位置にあって出入口の幅方向に２００ｍｍの値に設定し、ドア１ａ、１ｂ、９ａ、９ｂが開扉動作に入り、かごドア１ａとかごドア１ｂ間の間隙が２００ｍｍを超えた時点でビームセンサ１１を検出状態とするとともに、ドア１ａ、１ｂ、９ａ、９ｂが閉扉動作に入り、かごドア１ａとかごドア１ｂ間の間隙が２００ｍｍとなった時点でビームセンサ１１を非検出状態とすると説明しているが、実際にはビームセンサ１１がドア１ａ、１ｂ、９ａ、９ｂを誤検出することを防ぐため、かごドア１ａとかごドア１ｂ間の間隙と検出範囲１２とに所定の差異をもたせた状態でビームセンサ１１のＯＮ、ＯＦＦが制御される。   In the first embodiment, the detection range 12 of the beam sensor 11 is set to a value of 200 mm in the width direction of the doorway at the door passing position. However, the present invention is not limited to this, and the usage status of the elevator, etc. It can be arbitrarily set within the range of 100 to 300 mm according to the above. Here, the reason why the detection range 12 of the beam sensor 11 is set to a value of 100 to 300 mm in the width direction of the entrance and exit at the door passing position is that it is difficult to narrow the infrared beam width to a value of 100 mm or less. In addition, when the distance is 300 mm or more, it is difficult to detect a passenger who is about to enter the car 6 just before the door is fully closed. In the first embodiment, the detection range 12 of the beam sensor 11 is set to a value of 200 mm in the width direction of the doorway at the door passage position, and the doors 1a, 1b, 9a, 9b enter the door opening operation, When the gap between the car door 1a and the car door 1b exceeds 200 mm, the beam sensor 11 is set in a detection state, and the doors 1a, 1b, 9a, and 9b enter a closing operation, and the car door 1a and the car door 1b are in a closed state. Although it has been described that the beam sensor 11 is in a non-detection state when the gap reaches 200 mm, in order to prevent the beam sensor 11 from erroneously detecting the doors 1a, 1b, 9a, 9b in practice, the car door 1a ON / OFF of the beam sensor 11 is controlled with a predetermined difference between the gap between the car door 1b and the detection range 12.

図３は本発明に係るエレベータのドア装置の第２の実施形態における正面図、図４は第２の実施形態における上面図である。なお、前述したものと同等のものには同一符号が付してある。   FIG. 3 is a front view of the elevator door device according to the second embodiment of the present invention, and FIG. 4 is a top view of the second embodiment. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was mentioned above.

第２の実施形態のエレベータのドア装置は図３、図４に示すように、ビームセンサ１１の検出範囲１２ａの中心軸が出入口中心から左右どちらか一方に芯ずれして設定されている。たとえば、図３、図４に示すエレベータにあっては、ドアセフティ７を押すとドア１ａ、１ｂ、９ａ、９ｂが開反転することを知っており、ドア１ｂ、９ｂに近い位置から乗かご６に乗り込む乗客が多い傾向があることから、検出範囲１２ａの中心軸をドアセフティ７が付いている側のドア１ｂ、９ｂ方向に芯ずれしたものとしてある。また、たとえば、利き手、すなわち、過半数を占める右手でドア１ａ、９ａに触れることが多いことが観察される場合、図示しないが検出範囲１２ａの中心軸をドア１ａ、９ａ方向に芯ずれすることも可能である。   As shown in FIGS. 3 and 4, the elevator door device of the second embodiment is set such that the center axis of the detection range 12 a of the beam sensor 11 is misaligned from the center of the entrance to the left or right. For example, in the elevator shown in FIGS. 3 and 4, it is known that when the door safety 7 is pressed, the doors 1a, 1b, 9a, 9b are opened and reversed, and the car 6 starts from a position close to the doors 1b, 9b. Therefore, the center axis of the detection range 12a is misaligned in the direction of the doors 1b and 9b on the side where the door safety 7 is attached. For example, when it is observed that the doors 1a and 9a are often touched by the dominant hand, that is, the right hand occupying the majority, the center axis of the detection range 12a may be misaligned in the doors 1a and 9a direction although not shown. Is possible.

第２の実施形態によれば、左右のドア１ａ、１ｂ、９ａ、９ｂのうち統計的に多く触れられるドア方向に検出範囲１２ａを傾けることで、検出率を上げることができる。なお、検出範囲１２ａの左右方向への芯ずれ量が少ないと、第１の実施形態に示すものとほとんど変わらず、一方、検出範囲１２ａの左右方向への芯ずれ量が多いと、従来のものと同様にドア全閉間際まで乗降客を検出することができなることから、検出範囲１２ａの左右方向への芯ずれ量は、検出率の向上を図り、かつ、ドア全閉間際まで乗降客を検出するという本発明の目的に支障をきたすことのない値に調整する必要がある。そこで、検出範囲１２の左右の傾き量は、第1の実施例とほぼ同程度乗場１３側を検出ができるように調整する必要がある。   According to the second embodiment, the detection rate can be increased by inclining the detection range 12a in the door direction that is statistically touched among the left and right doors 1a, 1b, 9a, and 9b. If the amount of misalignment in the left-right direction of the detection range 12a is small, it is almost the same as that shown in the first embodiment. On the other hand, if the amount of misalignment in the left-right direction of the detection range 12a is large, Since it is possible to detect passengers just before the door is fully closed, the amount of misalignment in the left-right direction of the detection range 12a improves the detection rate, and makes it possible to detect passengers until the door is fully closed. It is necessary to adjust to a value that does not hinder the object of the present invention to detect. Therefore, it is necessary to adjust the left and right inclination amounts of the detection range 12 so that the hall 13 side can be detected to the same extent as in the first embodiment.

図５、図６は本発明に係るエレベータのドア装置の第３の実施形態を示す正面図で、図５はドア全開時、図６はドアが途中まで閉鎖してきた状態を示している。   5 and 6 are front views showing a third embodiment of an elevator door device according to the present invention. FIG. 5 shows a state in which the door is fully opened, and FIG. 6 shows a state in which the door is partially closed.

この図５，図６に示すように、検出範囲１２を変化させることができるビームセンサ１１を用いることで、さらに検出率を上げることができる。つまり、エレベータのドア１a、１b、９a、９bが広く開いているときには、図５のように検出範囲１２が広く、エレベータのドア１a、１b、９a、９bが閉じてくると通行可能な出入口幅に合わせて図６のように検出範囲１２を狭く変化させることができるビームセンサ１１を用いることで、検出範囲の死角を少なくすることができ、検出率の向上を図ることができる。 As shown in FIGS. 5 and 6, the detection rate can be further increased by using the beam sensor 11 that can change the detection range 12. That is, when the elevator doors 1a, 1b, 9a, and 9b are wide open, the detection range 12 is wide as shown in FIG. 5, and the doorway width that is accessible when the elevator doors 1a, 1b, 9a, and 9b are closed. Accordingly, by using the beam sensor 11 that can change the detection range 12 narrowly as shown in FIG. 6, the blind spot of the detection range can be reduced, and the detection rate can be improved.

図７、図８は本発明に係るエレベータのドア装置の第４の実施形態を示す正面図で、図７はドア全開時、図８はドアが途中まで閉鎖してきた状態を示している。   7 and 8 are front views showing a fourth embodiment of an elevator door device according to the present invention. FIG. 7 shows a state in which the door is fully opened, and FIG. 8 shows a state in which the door has been partially closed.

図７、図８に示すように、検出範囲１２を複数持つビームセンサ１１を用いて、本発明の第３の実施例と同じような効果を得ることができる。つまり、エレベータのドア１a、１b、９a、９bが広く開いているときには図７のように検出範囲１２が広いビームセンサ１１と検出範囲１２が狭いビームセンサ１１が有効であるが、エレベータのドア１a、１b、９a、９bが閉じてくると通行可能な出入口幅に合わせて図８のように検出範囲１２が広いビームセンサ１１を無効にし、検出範囲１２が狭いビームセンサ１１のみを有効にしておくことで、検出範囲１２の死角を少なくすることができる。なお、エレベータのドア１a、１b、９a、９bが広く開いているときには検出範囲１２が広いビームセンサ１１のみを有効にし、エレベータのドア１a、１b、９a、９bが閉じてくると通行可能な出入口幅に合わせて検出範囲１２が広いビームセンサ１１を無効にし、検出範囲１２が狭いビームセンサ１１のみを有効にするよう切り替えて用いることでも、同様の効果が得られる。このときのビームセンサ１１は、ひとつのセンサに複数の検出範囲を持たせてもよいし、複数の異なる検出範囲を持つセンサを組み合わせてもよい。 As shown in FIGS. 7 and 8, the same effect as that of the third embodiment of the present invention can be obtained by using the beam sensor 11 having a plurality of detection ranges 12. That is, the door 1a of the elevator, 1b, 9a, is a the detection range 12 is wide beam sensor 11 detection range 12 is narrow beam sensor 11 is enabled as shown in Figure 7 when 9b is wide open, the elevator door 1a When 1b, 9a, and 9b are closed, the beam sensor 11 having a wide detection range 12 is disabled and only the beam sensor 11 having a narrow detection range 12 is enabled as shown in FIG. Thus, the blind spot in the detection range 12 can be reduced. When the elevator doors 1a, 1b, 9a and 9b are wide open, only the beam sensor 11 having a wide detection range 12 is enabled, and the elevator doors 1a, 1b, 9a and 9b can be accessed when the elevator doors 1a, 1b, 9a and 9b are closed. The same effect can be obtained by switching the beam sensor 11 having a wide detection range 12 in accordance with the width and switching only the beam sensor 11 having a narrow detection range 12 to be valid. In this case, the beam sensor 11 may have one sensor having a plurality of detection ranges, or may combine sensors having a plurality of different detection ranges.

図９は本発明に係るエレベータのドア装置の第５の実施形態における正面図、図１０は第５の実施形態における上面図である。   FIG. 9 is a front view of a fifth embodiment of an elevator door device according to the present invention, and FIG. 10 is a top view of the fifth embodiment.

図９、図１０に示すように、ビームセンサ１１を複数個用いて検出範囲１２の死角を少なくしつつ、戸閉動作中に乗り込もうとする乗客を検出することもできる。 As shown in FIGS. 9 and 10, it is possible to detect a passenger who tries to get in during the door closing operation while reducing the blind spot of the detection range 12 by using a plurality of beam sensors 11.

図１１は本発明に係るエレベータのドア装置の第６の実施形態における正面図、図１２は第６の実施形態における上面図である。   FIG. 11 is a front view of a sixth embodiment of an elevator door device according to the present invention, and FIG. 12 is a top view of the sixth embodiment.

図１１、図１２のようにビームセンサ１１をドアに取付けることによっても同様の効果を得ることができる。 Similar effects can be obtained by attaching the beam sensor 11 to the door as shown in FIGS.

なお、本発明は出入口中央から左右にドアが開閉する中央開きのドアを有するエレベータのみではなく、出入口の左右どちらか一方から他方へ開閉する片開きのドアを有するエレベータにも適用が可能である。     The present invention can be applied not only to an elevator having a center opening door that opens and closes from the center of the entrance to the left and right, but also to an elevator having a single opening door that opens and closes from either the left or right of the entrance. .

本発明に係るエレベータのドア装置の第１の実施形態における正面図である。It is a front view in a 1st embodiment of the door device of the elevator concerning the present invention. 第１の実施形態における上面図である。It is a top view in a 1st embodiment. 本発明に係るエレベータのドア装置の第２の実施形態における正面図である。It is a front view in 2nd Embodiment of the door apparatus of the elevator which concerns on this invention. 第２の実施形態における上面図である。It is a top view in 2nd Embodiment. 本発明に係るエレベータのドア装置の第３の実施形態を示す正面図でドア全開時を示している。The front view which shows 3rd Embodiment of the door apparatus of the elevator which concerns on this invention is shown at the time of door full open. ドアが途中まで閉鎖してきた状態を示す第３の実施形態を示す正面図である。It is a front view which shows 3rd Embodiment which shows the state which has closed the door to the middle. 本発明に係るエレベータのドア装置の第４の実施形態を示す正面図で、ドア全開時を示している。It is a front view which shows 4th Embodiment of the door apparatus of the elevator which concerns on this invention, and shows the time of door full open. ドアが途中まで閉鎖してきた状態を示す第４の実施形態を示す正面図である。It is a front view which shows 4th Embodiment which shows the state which has closed the door to the middle. 本発明に係るエレベータのドア装置の第５の実施形態における正面図である。It is a front view in 5th Embodiment of the door apparatus of the elevator which concerns on this invention. 第５の実施形態における上面図である。It is a top view in a 5th embodiment. 本発明に係るエレベータのドア装置の第６の実施形態における正面図である。It is a front view in 6th Embodiment of the door apparatus of the elevator which concerns on this invention. 第６の実施形態における上面図である。It is a top view in a 6th embodiment.

符号の説明Explanation of symbols

１ａ、１ｂ かごドア
２ ハンガ
３ ドアレール枠
４ ドアレール
５ ハンガローラ
６ 乗かご
７ ドアセフティ
８ カバー
９ａ、９ｂ 乗場ドア
１１ ビームセンサ
１２、１２ａ 検出範囲
１３ 乗場 1a, 1b Car door 2 Hanger 3 Door rail frame 4 Door rail 5 Hanger roller 6 Car cage 7 Door safety 8 Cover 9a, 9b Landing door 11 Beam sensor 12, 12a Detection range 13 Landing

Claims (1)

乗かごの出入口に立設され中央部から左右に開閉可能なドアと、このドア上部に取付けられ前記ドアを開閉駆動するドア開閉手段と、前記出入口の上方に設置され、前記出入口を通過する物体を検出する検出手段を備えたエレベータのドア装置において、
前記検出手段は、前記出入口の幅方向中央に配置され赤外線を投受光する投受光部を有し、投光した赤外線が物体に当たり反射した反射光により当該物体を検出する反射型のビームセンサからなり、その検出範囲を、ドア通過位置にあって前記出入口の幅方向に１００〜３００ｍｍの値に設定するとともにその検出範囲の中心軸が前記出入口中心から左右どちらか一方に芯ずれして設定され、前記赤外線の投光軸を、乗場方向に所定角度傾けたことを特徴とするエレベータのドア装置。 A door erected at the entrance of the passenger car that can be opened and closed from the center to the left and right, door opening and closing means attached to the upper part of the door for opening and closing the door, and an object installed above the entrance and passing through the entrance In an elevator door device provided with detection means for detecting
The detecting means includes a light projecting / receiving unit arranged at the center in the width direction of the entrance / exit to project and receive infrared rays, and includes a reflective beam sensor that detects the object by reflected light reflected by the projected infrared ray and reflected by the object. The detection range is set to a value of 100 to 300 mm in the width direction of the doorway at the door passage position, and the center axis of the detection range is set to be shifted from the center of the doorway to either the left or right side, An elevator door device characterized in that the infrared light projection axis is inclined at a predetermined angle in a landing direction.
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