JP2003341962A - Safety device for elevator door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the hands of passengers or objects at a landing from being caught between a jamb and a landing door and to prevent to give unpleasant feeling to persons around the landing by preventing an alarm from starting when no passengers exist at the landing. <P>SOLUTION: Whether or not the hands of the passengers 11 exist within a prescribed distance from the landing door 4 in a closed state of the landing door 4 is decided by an alarm generating device 10, regardless of the position of a car constituting an elevator, based on a landing door opening/closing detecting signal outputted from an opening/closing detecting device 8 and an obstacle detecting signal outputted from a light receiving device 7. When the hands of the passengers 11 exist within the prescribed distance from the landing door 4 in the closed state of the landing door 4, buzzer sound is given from an alarm device 12 to give an alarm to the passengers 11 excessively approaching the landing door. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an elevator door, which warns a passenger when there is an abnormally close passenger to a hall door of an elevator and keeps the passenger away from the hall door.

[0002]

2. Description of the Related Art In order to ensure safety when an elevator landing door is opened, conventionally, a proposal for a safety device for an elevator door is known.

As an example, a conventional elevator door safety device includes a remaining distance calculating section for calculating a remaining distance to a destination floor, and an alarm device which is activated when the calculation result of the remaining distance calculating section reaches a predetermined distance. It is equipped with an activation unit and an alarm device that is activated by a signal from the alarm device activation unit to give an alarm to the hall on the destination floor.When opening the landing door on the destination floor, the passengers in the hall are alerted to The door is announced to prevent the fingers from getting caught between the three-sided frame and the landing door.

[0004]

By the way, in such a conventional safety device, since an alarm is issued even when a passenger who pushes a call leaves the hall without using the elevator, an alarm is issued around the hall. Not only will it cause discomfort to other people who are present, but when passengers arrive at the hall without passengers in response to the call in the car, the alarm will be issued, There is a problem that it gives people around the landing a discomfort.

In view of the above circumstances, the present invention outputs an alarm when there is a person or an object that is abnormally approaching the landing door with the landing door closed regardless of the position of the car. It is possible to prevent people, things, etc. in the hall from being caught between the three-way frame and the hall door, and when there are no passengers in the hall, make sure that there is no excessive chime noise, etc. The main object of the present invention is to provide a safety device for an elevator door that can prevent people in the area from feeling uncomfortable.

[0006]

In order to achieve the above-mentioned object, the present invention provides a hall door closing detection signal indicating that the hall door is closed from a hall door closing detection device, When an obstacle detection signal indicating that a human body or an object is present is being output from the obstacle detection device, an alarm is issued by an alarm notification device so that people or objects in the hall can be seen in a three-way frame Be careful not to get caught between the door and when there are no passengers in the hall so that there is no strange chime noise and the like so that people around the hall do not feel uncomfortable.

According to a second aspect of the present invention, in the elevator door safety device according to the first aspect, a semiconductor element is used as the obstacle detection device to emit / receive a light beam and abnormally approach the landing door. Using a light emitting / receiving device for detecting a human body or an object, or a photoelectric tube to emit / receive a light beam, a human body abnormally approaching the landing door, a photoelectric tube door safety device for detecting an object, or a change in capacitance. Based on this, by using either a human body or an electrostatic capacitance detection device that detects an object that is abnormally approaching the landing door, while keeping the construction cost of the entire system low, passengers can get their hands caught in the landing door. When there are no passengers in the hall, avoid excessive noises such as chimes to prevent people around the hall from feeling uncomfortable.

According to a third aspect of the present invention, in the elevator door safety device according to any one of the first and second aspects, when the hall door closing detector is attached to the hall door and the hall door is closed. , Detecting this, a hall door opening / closing switch that generates a hall door closing detection signal, or analyzing an elevator control signal output from the elevator control device, and when the hall door is closed, By using one of the hall door closing detection devices that detect and generate a hall door closing detection signal, while keeping the construction cost of the entire system low, it is possible to prevent passengers from being caught in the hall door. , When there are no passengers in the hall,
Avoid excessive chime noise and make sure people around the hall do not experience discomfort.

According to a fourth aspect of the present invention, in the elevator door safety device according to any one of the first to third aspects, as the alarm issuing device, an automatic announcement device for issuing an alarm by voice, a buzzer sound, or a chime sound is used. By using either an alarm device that issues an alarm or a display device that displays the content of the alarm, while keeping the construction cost of the entire system low, it is possible to prevent passengers from getting their hands caught in the landing door and When there are no passengers, avoid excessive chime noises and the like so that people around the hall are not uncomfortable.

[0010]

1 is a schematic configuration diagram showing a first embodiment of a safety device for an elevator door according to the present invention.

Elevator door safety device 1 shown in this figure
a is a semiconductor element or the like, is provided on one side surface of the three-way frame 3 provided in the hall 2 of the elevator, and emits a light beam 5 in parallel with the hall door 4.
And a light receiver 7 that is formed of a semiconductor element or the like and is provided on the other side surface of the three-way frame 3 and that generates an obstacle detection signal when the light beam 5 emitted from the light emitter 6 is no longer received. An open / close detector 8 configured to include an open / close detection switch provided on the door 4 to detect opening / closing of the hall door 4 and generate a hall door open / close detection signal, and a hall door open / close detection output from the open / close detector 8. When the obstacle detection signal is output from the light receiver 7 constituting the detection device 9 in the state where the signal indicates “closed”, the warning signal generation device 10 that generates the warning signal and the hall 2 An alarm device 12 is provided which, when an alarm signal is output from the alarm signal generation device 10, emits a buzzer sound and gives an alarm to the passenger 11 who is too close to the landing door 4.

Regardless of the position of the car forming the elevator, when the landing door 4 is closed and the hand of the passenger 11 is within a predetermined distance from the landing door 4, for example, "5 cm", This is detected by the alarm signal generation device 10 that takes in the landing door opening / closing detection signal output from the opening / closing detector 8 and the obstacle detection signal output from the light receiver 7, and at the same time generates an alarm signal. The alarm device 12 emits a buzzer sound to give a warning to the passenger 11 who is too close to the landing door 4.

As described above, in the first embodiment, the landing door opening / closing detection signal output from the opening / closing detector 8 composed of the opening / closing detection switch and the obstacle detection signal output from the light receiver 7 are used. On the basis of the above, the alarm generation device 10 causes the passenger 11's hand or the like within a predetermined distance from the hall door 4 such as “5 cm” with the hall door 4 closed regardless of the position of the elevator car. If there is a hand of the passenger 11 within a predetermined distance from the hall door 4 when the hall door 4 is closed, a buzzer sound is emitted from the alarm device 12 and the hall door 4 is judged. By giving a warning to passengers 11 who are too close,
Is to be separated from the landing door 4. For this reason,
Regardless of the position of the car, with the landing door 4 closed,
When there is a passenger 11 or an object that is abnormally close to the landing door 4, an alarm is issued and the hand, object, etc. of the passenger 11 at the landing 2 is sandwiched between the three-way frame 3 and the landing door 4. It is possible to prevent it, and even if the car approaches the landing 2, the hands and objects of the passengers 11 on the landing 2 are three-sided frame 3
When there is no danger of being caught between the passenger and the landing door 4, or when there is no passenger 11 in the landing 2, the buzzer sound is not emitted from the alarm device 12 and the passengers 1 around the landing 2
It is possible to prevent people other than 1 from feeling uncomfortable.

Further, in the first embodiment, a light emitting device 6 and a light receiving device 7 formed of semiconductor elements or the like are used as the detecting device 9, and an open / close detecting switch is used as the open / close detecting device 8. Furthermore, as the alarm device 12,
Since a buzzer or the like is used, the construction cost of the entire system can be kept low by using inexpensive and easily available equipment or equipment already installed.

FIG. 2 is a schematic diagram showing a second embodiment of the elevator door safety device according to the present invention. In addition,
In this figure, the same parts as those shown in FIG. 1 are designated by the same reference numerals.

Elevator door safety device 1 shown in this figure
1 is different from the elevator door safety device 1a shown in FIG. 1 in that instead of the detection device 9 including the light emitter 6 and the light receiver 7, a plurality of light beams 21 are used and passengers 11 within a predetermined distance from the landing door 4. Using the photoelectric tube door safety device 22 that detects whether or not there is a passenger, the passenger 11 within a predetermined distance from the hall door 4 such as “5 cm” while the hall door 4 is closed.
If there is a hand of the passenger 11 within a predetermined distance from the hall door 4 when the hall door 4 is closed, a buzzer sound is emitted from the alarm device 12, and This is to give a warning to the passengers 11 who have come too close to the door 4 so that the passenger 11 can be separated from the landing door 4.

The photoelectric tube door safety device 22 is composed of a plurality of light bulbs and the like, and is provided on one side surface of the three-way frame 3 provided in the hall 2 of the elevator. When an obstacle detection signal is generated when it becomes impossible to receive any one of the light rays 21 emitted from the light emitter 23, which is configured by a light emitter 23 that emits And a light receiver 24 for generating a predetermined distance from the landing door 4,
For example, the hand of passenger 11 enters within 5 cm, and each light beam 21 emitted from light emitter 23 is received by light receiver 24.
When any of the above can no longer receive light, an obstacle detection signal is output.

As described above, according to the second embodiment, the alarm generation device 10 operates based on the landing door opening / closing detection signal output from the opening / closing detector 8 and the obstacle detection signal output from the light receiver 24. , Regardless of the position of the car forming the elevator, with the hall door 4 closed, it is determined whether or not the hand of the passenger 11 is within a predetermined distance from the hall door 4, for example, within “5 cm”, When the passenger's 11 hand is within a predetermined distance from the landing door 4 with the landing door 4 closed, a buzzer sound is emitted from the alarm device 12,
Since the warning is given to the passengers 11 who are too close to the landing door 4 and the passengers 11 are made to move away from the landing door 4, the landing door 4 is abnormally approached when the landing door 4 is closed regardless of the position of the car. When there is an occupant 11 or an object, etc., an alarm can be issued so that the hand, object, etc. of the occupant 11 in the hall 2 will not be caught between the three-way frame 3 and the hall door 4. At the same time, even if the car approaches the hall 2, there is no risk that the hands, objects, etc. of the passenger 11 in the hall 2 will be caught between the three-way frame 3 and the hall door 4, or the passenger 1 at the hall 2
When 1 is not present, it is possible to prevent the alarm device 12 from producing a buzzer sound so that no one other than the passengers 11 around the hall 2 feels uncomfortable.

Further, in the second embodiment, a light emitter 23 composed of a plurality of light bulbs and the like, and a light receiver 24 composed of a plurality of photoelectric tubes are used. In addition, since a buzzer or the like is used as the alarm device 12, the cost of constructing the entire system can be kept low by using inexpensive and easily available devices or already installed devices. You can

FIG. 3 is a schematic diagram showing a third embodiment of a safety device for an elevator door according to the present invention. In addition,
In this figure, the same parts as those shown in FIG. 1 are designated by the same reference numerals.

Elevator door safety device 1 shown in this figure
1 is different from the elevator door safety device 1a shown in FIG. 1, in place of the opening / closing detector 8 for detecting opening / closing of the landing door 4, an elevator control signal output from the control panel controlling the operation of the elevator. On the basis of the above, when the landing door 4 is closed, the door closing detection device 31 that detects this and generates the landing door closing detection signal is provided, and the door closing detection device 31 outputs the landing door closing detection signal. The receiver 7
When an obstacle detection signal is output from the alarm signal generator 10, the alarm signal generator 10 outputs an alarm signal, and the alarm device 12 emits a buzzer sound or the like to give a warning to the passenger 11 who is too close to the landing door 4, That is, it is arranged to be separated from the landing door 4.

As described above, in the third embodiment, the elevator control signal output from the control panel that controls the elevator is guided to the door closing detection device 31, and whether the landing door 4 is closed or not. When it is detected that the landing door 4 is closed, it is determined whether or not the hand of the passenger 11 is within a predetermined distance from the landing door 4, for example, “5 cm”, regardless of the car position. When the passenger's 11 hand etc. are within a predetermined distance from the landing door 4, a buzzer sound is emitted from the alarm device 12 to give a warning to the passenger 11 who is too close to the landing door 4, and the passenger 11 is separated from the landing door 4. Therefore, regardless of the position of the car, the passenger 1 who is abnormally approaching the landing door 4 with the landing door 4 closed.
1 or there is an object, an alarm is issued and the hall 2
It is possible to prevent the hands, objects, etc. of the passenger 11 in the car from getting caught between the three-way frame 3 and the hall door 4, and even if the car approaches the hall 2, the hand of the passenger 11 in the hall 2 ,
When there is no danger that an object or the like will be caught between the three-way frame 3 and the landing door 4, or when there are no passengers 11 in the landing 2, the buzzer sound will not be output from the alarm device 12 and the surroundings of the landing 2 It is possible to prevent any one other than the passengers 11 who are present from feeling uncomfortable.

In the third embodiment, the elevator control signal output from the control panel that controls the elevator is guided to the door closing detector 31 to monitor whether the hall door 4 is closed. In addition, as the detection device 9,
Light-emitter 6 and light-receiver 7 configured by semiconductor elements or the like
In addition, since a buzzer or the like is used as the alarm device 12, the cost of constructing the entire system can be kept low by using inexpensive and easily available devices or already installed devices. You can

Further, in each of the above-described embodiments, the passenger 11 who is abnormally approaching the landing door 4 by the detection device 9 composed of a semiconductor element or the like, or the photoelectric tube door safety device 22 composed of a light bulb, a photoelectric tube or the like. (Or an object) or the like, but another detection device, for example, a capacitance detection device that detects a passenger 11, an object, or the like that is abnormally approaching the landing door 4 based on a change in capacitance. You may make it use such as.

Even in this case, as in each of the above-described embodiments, the cost of constructing the entire system can be suppressed to a low level by using inexpensive and easily available equipment or equipment already installed. it can.

In each of the above-described embodiments, the landing door 4
When it is detected that the car is closed, regardless of the car position, a predetermined distance from the landing door 4, for example, "5 cm"
It is determined whether or not the passenger 11's hand is within the range, and when the passenger 11's hand or the like is within a predetermined distance from the landing door 4,
A buzzer sound or the like is emitted from the alarm device 12 to warn the passengers 11 who have come too close to the landing door 4 so that the passenger 11 is separated from the landing door 4. However, an alarm method other than such an alarm method, for example, an automatic announcement The warning may be given to the passengers 11 at the hall 2 by a method of issuing a warning by voice from the device or a method of displaying the warning content on the display device.

Even in this case, as in each of the above-described embodiments, the construction cost of the entire system can be kept low by the amount of equipment already installed.

[0028]

As described above, according to the elevator door safety device of the present invention, regardless of the position of the car, a person or an object that is abnormally approaching the hall door with the hall door closed. When there is a warning, it can prevent people and things in the hall from being caught between the three-way frame and the hall door, and when there are no passengers in the hall, an extra chime sound etc. Can be prevented so that people around the hall do not feel uncomfortable.

[Brief description of drawings]

FIG. 1 is a first safety device for an elevator door according to the present invention.
It is a schematic structure figure showing an embodiment.

FIG. 2 is a second safety device for an elevator door according to the present invention.
It is a schematic structure figure showing an embodiment.

FIG. 3 is a third safety device for an elevator door according to the present invention.
It is a schematic structure figure showing an embodiment.

[Explanation of symbols]

1a-1c: Elevator door safety device 2: Platform 3: Three-sided frame 4: Landing door 5: Ray 6: Light emitter 7: Light receiver 8: Open / close detector (landing door closing detection device) 9: Detection device (obstacle detection device) 10: Alarm signal generation device (alarm reporting device) 11: Passengers 12: Alarm device (alarm reporting device) 21: Ray 22: Phototube door safety device (obstacle detection device) 23: Light emitter 24: Light receiver 31: Door closing detection device (landing door closing detection device)

Claims (4)

[Claims] 1. An obstacle detecting device for detecting a human body or an object that is abnormally approaching a hall door of an elevator hall, and a hall door closing for detecting the obstacle when the hall door is closed. With the detection device and the hall door closing detection signal indicating that the hall door is closed from the hall door closing detection device,
A safety device for an elevator door, comprising: an alarm reporting device that issues an alarm when an obstacle detection signal indicating the presence of a human body or an object is output from the obstacle detection device. 2. The elevator door safety device according to claim 1, wherein the obstacle detection device emits / receives a light beam to detect a human body or an object that is abnormally approaching the landing door. A phototube door safety device comprising a light emitting / receiving device or a phototube, or a capacitance detection device for detecting a human body or an object abnormally approaching the landing door based on a change in capacitance. Elevator door safety featured. 3. The elevator door safety device according to claim 1, wherein the hall door closing detection device is attached to the hall door.
When this hall door is closed, it is detected to detect the hall door closing detection signal, or the elevator control signal output from the elevator control device is analyzed to obtain the hall door. When is closed,
An elevator door safety device, which is any of the hall door closing detection devices that detect this and generate a hall door closing detection signal. 4. The elevator door safety device according to any one of claims 1 to 3, wherein the alarm issuing device issues an alarm by an auto-announce device that issues an alarm by voice, a buzzer sound, or a chime sound. A safety device for an elevator door, which is either an alarm device or a display device for displaying alarm contents.