JP2008273638A - Door device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device for an elevator capable of detecting a passenger who are about to get in a car during door closing action. <P>SOLUTION: A detecting means installed above a doorway of the elevator to detect an article passing through the doorway, is made from a reflecting type beam sensor 11 disposed at a doorway center, having light emitting/receiving portion emitting/receiving infrared light, and detecting the article by reflecting light which is the irradiated infrared light strikes on the article and reflected. A detection range 12 is set to have a value of 100-300 mm in a width direction of the doorway at a door passing position. A light emitting/receiving axis of the infrared light is tilted in a landing direction by a prescribed angle, and the passenger who are about to get in the car 6 can be detected on a landing side until when a door is about to fully close. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator door device that detects passengers and objects approaching an elevator doorway.

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)

  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.

  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.

  In order to achieve the above object, the invention according to claim 1 of the present invention is a door standing at the entrance / exit of a car and capable of opening and closing from the center to the left and right, and attached to the upper part of the door to open and close the door. In an elevator door device including door opening / closing means and detection means installed above the entrance and detecting an object passing through the entrance, the detection means is disposed at the center in the width direction of the entrance and emits infrared rays. It has a light projecting / receiving unit that receives light, and is composed of a reflective beam sensor that detects the object by reflected light that is reflected by the projected infrared ray and reflects the object. The detection range is at the door passing position and the width direction of the entrance / exit The infrared light projection axis is inclined at a predetermined angle in the landing direction.

  As described above, according to the first aspect of the present invention, the detection range of the reflective beam sensor is set to a value of 100 to 300 mm in the width direction of the doorway at the door passing position, so that the door is fully closed. It becomes possible to set the beam sensor as the detection means to the detection state. Further, since the infrared light projection 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. 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.

  The invention according to claim 2 of the present invention is characterized in that the detection means is set so that a center axis of the detection range overlaps with the center of the entrance / exit.

  Thus, the invention according to claim 2 of the present invention detects passengers on average in the left-right direction of the entrance / exit by setting the central axis of the detection range of the detection means so as to overlap the entrance / exit center. Can do.

  Furthermore, the invention according to claim 3 of the present invention is characterized in that the detection means is set such that a center axis of the detection range is misaligned from the center of the entrance to the left or right.

  As described above, according to the third aspect of the present invention, the detection rate is set by setting the center axis of the detection range of the detection means to be misaligned from the center of the entrance to the left or right according to the use situation of the elevator. Can be raised.

  Further, the invention according to claim 4 of the present invention is characterized in that the detection means can change the detection range in conjunction with the opening and closing of the door, and has a detection range that is substantially the same as an entrance / exit width that can be always passed. It is said.

  Thus, the invention according to claim 4 of the present invention can reduce the blind spot in the detection range, leading to an improvement in the detection rate.

  Further, in the invention according to claim 5 of the present invention, the detection means has two or more different detection ranges, and the detection means has a detection range wider than an entrance / exit width that can pass in conjunction with opening and closing of the door. The feature is that the function of the means is stopped.

  Thus, the invention according to claim 5 of the present invention can reduce the blind spot in the detection range.

  The invention according to claim 6 of the present invention is characterized in that the detection means is composed of two or more sensors, and each detection range is different.

  As described above, the invention according to claim 6 of the present invention can reduce the blind spot in the detection range and detect a passenger who is about to get in during the door closing operation.

  Further, the invention according to claim 7 of the present invention is characterized in that the detection means is attached to an upper part of the door contact side.

  As described above, the invention according to claim 7 of the present invention can reduce the blind spot in the detection range and detect the passenger who is about to get in during the door closing operation, as in the case of claim 6.

  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.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an elevator door device according to the present invention will be described with reference to the drawings.

  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.

  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.

  The door device according to the first embodiment is a light projecting / receiving unit (not shown) that transmits and receives infrared rays 11a as a detecting means for detecting an object passing through the doorway, which is attached to the widthwise center of the doorway, for example, 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.

  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.

  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 hall 13 is small, passengers cannot be detected unless they are close to the hall doors 9a and 9b. 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.

  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.

  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.

  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.

  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.

  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, whereas if the amount of misalignment in the left-right direction of the detection range 12a is large, the conventional one 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.

  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.

  As shown in FIGS. 5 and 6, the detection rate can be further increased by using the detection 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 detection 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.

  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.

  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 detection sensor 11 having a plurality of detection ranges 12. That is, when the elevator doors 1a, 1b, 9a, 9b are wide open, the detection sensor 11 having a wide detection range 12 and the detection sensor 11 having a narrow detection range 12 are effective as shown in FIG. 7, but the elevator door 1a is effective. When 1b, 9a, and 9b are closed, the detection sensor 11 with the wide detection range 12 is disabled and only the detection sensor 11 with the 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, 9b are wide open, only the detection sensor 11 with a wide detection range 12 is enabled, and the elevator doors 1a, 1b, 9a, 9b can be accessed when the elevator doors 1a, 1b, 9a, 9b are closed. The same effect can be obtained by switching the detection sensor 11 having the wide detection range 12 in accordance with the width to be invalid and switching only the detection sensor 11 having the narrow detection range 12 to be valid. In this case, the detection sensor 11 may have a plurality of detection ranges in one sensor, or a combination of sensors having a plurality of different detection ranges.

  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.

  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 detection sensors 11.

  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.

  Similar effects can be obtained by attaching the detection sensor 11 to the door as shown in FIGS.

    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. .

It is a front view in a 1st embodiment of the door device of the elevator concerning the present invention. It is a top view in a 1st embodiment. It is a front view in 2nd Embodiment of the door apparatus of the elevator which concerns on this invention. It is a top view in 2nd Embodiment. 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. It is a front view which shows 3rd Embodiment which shows the state which has closed the door to the middle. 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. It is a front view which shows 4th Embodiment which shows the state which has closed the door to the middle. It is a front view in 5th Embodiment of the door apparatus of the elevator which concerns on this invention. It is a top view in a 5th embodiment. It is a front view in 6th Embodiment of the door apparatus of the elevator which concerns on this invention. It is a top view in a 6th embodiment.

Explanation of symbols

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 (7)

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 infrared projection axis is inclined at a predetermined angle in the landing direction. Door device.   The elevator door device according to claim 1, wherein the detection means is set so that a center axis of the detection range overlaps with the center of the entrance / exit.   2. The elevator door device according to claim 1, wherein the detection means is set such that a center axis of the detection range is misaligned from the center of the entrance to the left or right. 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. And the said detection means can change the said detection range in connection with opening and closing of a door, and has the detection range substantially the same as the entrance-and-exit width | variety which can always be passed, The elevator door apparatus characterized by the above-mentioned. 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. And, the detection means has two or more types of different detection ranges, and the function of the detection means having a detection range wider than an entrance / exit width capable of passing in conjunction with opening / closing of the door is stopped. An elevator door device characterized by the above. 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. And the said detection means consists of two or more sensors, and each detection range differs, The door apparatus of the elevator characterized by the above-mentioned.   The elevator door device according to claim 6, wherein the detection means is attached to an upper part of the door contact side.

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