JP2000153978A - Safety device for elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fingers or the like from being caught by actuating an alarm device starting means when a car reaches specified distance in front of an object floor, starting an alarm device by its actuation signal to sound an alarm to the landing of the object floor, and opening a door after the alarm device is started. SOLUTION: An alarm device starting means 5 is provided at a car 11 and actuated when the residual distance computed by a residual resistance computing means 4 is specified distance Da or less, to transmit an actuation signal through a transmitting antenna 5a. The specified distance Da is set in front of the stop position of the car 11 so as to sound an alarm when a car door and a landing door start opening, and an alarm device 6 is provided at a landing. A receiving antenna 6a is engaged with the transmitting antenna 5a to receive the actuation signal of the alarm device starting means 5 and to start the alarm device 6 to sound an alarm. When the residual distance DR becomes distance δ or less which is a landing range, a door closing control device controls to open a door. Fingers or the like are therefore prevented from being caught.

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 prevents a finger or the like from being caught in a narrow space between the door and a three-way frame when the door is opened. is there.

[0002]

2. Description of the Related Art As a safety device for opening an elevator door, there is an elevator door safety device described in Japanese Utility Model Laid-Open No. 2-94881. FIG. 7 is of the same kind as that described in the above-mentioned publication. In the figure, the entrance formed in the front wall 13 of the hoistway on which the car 11 moves up and down is partitioned by the three-sided frame 14, and the landing door 15 is linked with the car door 11a. To open and close the entrance. When a person approaches the landing door 15 when the landing door 15 is opened, the detector 14b attached to the upper frame 14a of the three-way frame 14 detects the person and an alarm is issued from the speaker 14c. This prevents a finger or the like from being caught in the narrow gap g between the three-way frame 14 and the landing door 15. Also,
Japanese Patent Laying-Open No. 6-316391 discloses a system in which a pressure detecting device is provided in a landing door, and a warning message is issued when the pressure detecting device detects a pressure equal to or higher than a predetermined value.

[0003]

Since the conventional elevator door safety device is constructed as described above, the elevator door safety device described in Japanese Utility Model Laid-Open No. 2-94881 discloses an elevator door safety device. The detector 14b and the speaker 14c must be mounted on the three-way frame 14. For this reason, the detector 14b is required for each floor and is expensive. In particular, when retrofitting an existing elevator, there is a problem that it takes time to remodel a three-way frame for mounting the detector 14b and the speaker 14c. Also, Japanese Patent Application Laid-Open No. 6-31
In the safety device described in JP-A-6391, it cannot be detected unless a finger or the like is actually caught. For this reason, there has been a problem that it is not possible to prevent sandwiching beforehand. In addition, even in this case, there is a problem that it is expensive when retrofitting to an existing elevator.
The present invention has been made to solve the above problems, and provides an elevator door safety device that can prevent a finger or the like from being pinched and can easily attach equipment to an existing elevator. The purpose is to.

[0004]

The elevator door safety device according to the present application activates the alarm device activation means when the car reaches a predetermined distance before the destination floor, and activates the alarm device by this activation signal. An alarm is issued to the landing on the destination floor, and the door is opened after the alarm device is activated.

Further, the elevator door safety device according to the present application transmits an activation signal of an alarm device activation means wirelessly from a transmission antenna installed on a car and a reception antenna installed on a landing. The transmitting device is engaged with the transmitting antenna within a predetermined range, receives the operation signal, and activates the alarm device.

In addition, the elevator door safety device according to the present application is such that the door is once opened by a predetermined small width, stopped, restarted, and fully opened.

Furthermore, the safety device for an elevator door according to the present application opens and stops the door once by a predetermined small width, and also activates an alarm device when the door is opened by the predetermined small width to call attention. It is like that.

Further, the elevator door safety device according to the present application issues an alarm by voice synthesis of an IC type automatic announcement.

Furthermore, the safety device for an elevator door according to the present application is configured to generate an alarm by a buzzer.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 4
Embodiment 1 Embodiment 1 of the present invention will be described. FIG. 1 shows an overall configuration of the present invention. Reference numeral 1 denotes a car position detecting circuit which detects the current position of the car 11 by counting pulse signals from a pulse generator 8 as the car 11 moves up and down. 2 is a call registration circuit that registers the call when the car destination button 11b and the hall call button 12a are pressed, 3 is a stop determination circuit,
When the car 11 reaches a predetermined distance L before the nearest preceding floor among the preceding floors, if the call of the nearest preceding floor is registered, the stop is determined. Note that the predetermined distance L is a distance necessary for control, and is set as a distance necessary for decelerating to the nearest preceding floor and stopping. Reference numeral 4 denotes a remaining distance calculating means for calculating the remaining distance from the current position of the car 11 to the destination floor when the stop is determined.
The calculation of the remaining distance is commonly used, and the detailed description is omitted here. Reference numeral 5 denotes an alarm device activation means provided in the car 11, which is activated when the remaining distance calculation means 4 becomes equal to or less than a predetermined distance Da, and wirelessly transmits the activation signal via the transmitting antenna 5a.

Here, the predetermined distance Da is shorter than the stop position of the car 11 so that a warning can be issued to the landing when the car 11 arrives at the destination floor and the car door 11a and the landing door 15 start to open. For example, if the warning is "Please note the door", the time interval is set so that the door is opened after this warning is issued and the contents of the warning are understood. . Reference numeral 6 denotes an alarm device provided at the landing, which is composed of, for example, an IC type auto-announcement by voice synthesis, and receives the operation signal of the alarm device activation means 5 by engaging the receiving antenna 6a with the transmitting antenna 5a within a predetermined range. By doing so, an alarm is issued to the landing, for example, "Please note the door." Reference numeral 7 denotes a door closing control device that controls the door to open when the remaining distance DR becomes equal to or less than the distance δ that is the landing range.

FIG. 2 shows a specific mounting state of each component, and the alarm device starting means 5 is mounted on the car 11. The transmitting antenna 5a is formed in a U-shape and the car 11
Mounted on top. The receiving antenna 6a is formed of a rod-like body having a predetermined length, and is fixed to the shaft wall for each landing 12 by brackets 16 and 17, so that the car 11 is not connected to the transmitting antenna 5a before the car reaches the predetermined distance Da. The rod-shaped body is immersed in the character-shaped recess, so that a reception is possible. The alarm device 6 is provided in the upper frame 14a of the three-way frame 14 for each hall 12, and issues an alarm to the hall 12 when the hall door 15 and the car door 11a are opened. Note that the alarm device 6 includes an upper frame 14a.
Even if it is housed in the upper frame 14a without opening the through hole, it is possible to sufficiently alert.

Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. 3 and the explanatory diagram of FIG. In FIG.
When the call is registered in step S11, the car 11 is started at time t0 shown in FIG. 4 to perform the up / down operation in order to respond to the call in step S12. If the car 11 has reached the predetermined distance L in front of the nearest floor preceding in step S13, the procedure proceeds to step S14.
Detects the nearest floor call. If it has not arrived yet, the process returns to step S12 and waits for arrival. When a predetermined distance L before the nearest floor is reached (time t1), if there is a call for the preceding nearest floor, "Y" is given in step S15, and a stop decision is made in step S16. If there is no call at the preceding nearest floor, the procedure returns to step S12, and the car 11 continues to move up and down. When the stop is determined, the control of the car 11 and the control of the alarm device 6 are performed simultaneously.

(1) Control of the car 11 In step S17, the car 11 is decelerated. In this deceleration control, a control is performed such that the speed is commensurate with the remaining distance RD to the destination floor obtained by subtracting the distance from which the car 11 has moved up and down from the predetermined distance L as a starting point. It is controlled along the curve shown in FIG. Such control is already used, and the description is omitted here.
In step S18, the remaining distance RD to the destination floor is calculated, and
At 19, it is checked whether or not the remaining distance RD is equal to or less than the distance δ determined as the landing area. If the distance is larger than the distance δ, the process returns to step S17, and deceleration control is further performed. If the remaining distance RD is less than or equal to the distance δ, the car 11 is stopped in step S20 (time t3). In step S21, the car door 11a and the landing door 15
Is opened (time t3) and fully opened at time t4. When the passengers get on and off, the car door 11a and the landing door 15 start to be closed in step S22 (time t5), and are completely closed at time t6. If there are still calls left, "Y" is given in step S23 and the procedure S
Returning to step 12, the same process is repeated. If no calls remain, the answer is "N" and the process ends.

(2) Control of alarm device 6 At time t1, when the car 11 reaches a predetermined distance L from the nearest preceding floor and a call is detected, and a stop is determined (time t1), the destination floor is determined in step S24. Is calculated. If the remaining distance RD is larger than the predetermined distance Da in step S25, the process returns to step S24, and the car 11 moves to the predetermined distance D.
Wait until it reaches a. When the remaining distance RD becomes equal to or less than the predetermined distance Da, the alarm device activation means 5 operates in step S26 to output a startup command (time t2). When the start command is output in step S26, the alarm device 6 outputs the landing 12 in step S27.
An alert is issued. Here, at time t2, the alarm device 6 is activated prior to the opening of the door, and "Please pay attention to the door."
Is set to be issued.

According to the first embodiment, since an alarm is issued before the door is opened, it is possible to prevent a finger or the like from being pinched. In addition, since the alarm device 6 installed on each floor receives a signal wirelessly by the receiving tenant 6a,
It is an independent device that does not require a wire connection to elevator control equipment. Moreover, the alarm device 6 is connected to the three-way frame 1
If the three-sided frame 4 is submerged, it can be mounted on the three-sided frame 14 without any change in appearance, so that the mounting operation is easy. Further, the alarm device activation means 5 is installed on the car 11, and the remaining distance calculation means 4 is usually provided in a control panel installed in a machine room at the top of the hoistway. For this reason, when attaching to an existing elevator, wiring work from the machine room to the car 11 is required, but since the number of wires in this portion is large, spare wires are provided in advance. Since the spare wire is used for wiring to the alarm device activation means 5, substantial wiring work is unnecessary. For this reason, the alarm device starting means 5 can also be easily installed on the car 11, and the mounting operation is easy.

Embodiment 2 FIG. In the first embodiment, the car door 11a and the landing door 15 are assumed to be fully opened without stopping halfway. In the second embodiment, the door is once opened by a predetermined small width, stopped, and then restarted. It is designed to be fully opened. 5 and 6 show the operation of the second embodiment of the present invention. 5, the same reference numerals as those in FIG. 3 denote the same processes. That is, when the call is registered, the car 11
Starts ascending / descending operation and, at time t1, reaches a predetermined distance L in front of the preceding nearest floor, and if the call of the nearest floor is registered, determines to stop the car. Thereafter, the car 11 returns to the curve shown in FIG. At the time t.
When the remaining distance DR becomes equal to or less than the distance δ which is the landing range in 3, the car 11 stops and opens the door. When the car is determined to be stopped and the car 11 reaches the predetermined distance Da before the destination floor at time t2, the alarm device 6 is activated and issues an alarm to the landing. The above is the same processing as in FIG. 3, and in FIG.
This is the processing of steps S20 and steps S24 to S27.

Hereinafter, portions added in the second embodiment will be described. (1) Control of the car 11 In FIG. 5, when the car 11 stops in step S20 (time t3), the door opening is started in step S21a. In step S21b, the door is opened by a predetermined small width and the door is temporarily stopped (time t).
31) After that, the door opening is restarted in step S21c (time t32) and fully opened at time t4. When the passenger gets on and off, the door starts to be closed in step S22 (time t5), and time t6.
And fully closed. If a call has been registered in step S23, the process returns to step S12 to repeat the same processing. If no call has been registered, the processing ends. In order to stop the door by opening it by a predetermined small width, a method of detecting the opening degree of the door may be used, or a method of opening the door only for a predetermined short time and stopping it immediately may be used.

(2) Control of the alarm device 6 As in the first embodiment, when the car 11 determines to stop in the step S16 (time t1), the car 11 is decelerated in the steps S24 to S27, and the car 11 is decelerated in the time t2. Issue the first alarm. Further, when the door opening is started in step S21a (time t3), the alarm device starting means 5 is operated in step S28, and a starting signal is output from the transmitting antenna 5a. In step S29, the receiving antenna 6a receives the activation signal and the alarm device 6 issues a second alarm.

According to the second embodiment, when the door is opened by a predetermined small width, the door is temporarily stopped, restarted and fully opened, so that the user can be alerted by the operation of the door. Also, when the car 11 reaches the predetermined distance Da before the destination floor (time t2), the alarm device 6 is activated to issue the first alarm to the landing and to start the door opening (time t3). Since the second warning is issued from 6, the user can be further alerted in addition to the alert by the door opening operation itself.

Embodiment 3 In the above-described second embodiment, the second alarm starts when the door is opened from the fully closed state, that is, a start signal is issued to the alarm device 6 at time t3. The warning is intended to alert the user immediately before the door opening operation immediately before the door opening operation. The third embodiment has been made in order to ensure this intention, and FIG.
Step S2 between “1 stop” and “door opening start” in step S21a.
8 "alarm device start command" and step S29 "alarm device →
"Alarm issuance" is inserted. In other words, the door opening is started after the car 11 is stopped and an alarm is issued. According to the third embodiment as well, an alarm is issued before the door is opened, so that a finger or the like can be prevented from being pinched, and the work of attaching the door to an existing elevator is simple.

Embodiment 4 In the second embodiment, when the car 11 reaches the predetermined distance Da before the destination floor (time t2), the alarm device 6 is activated to issue the first alarm to the landing and start the door opening ( At time t3), the alarm device 6 issues the second alarm. In the fourth embodiment, in FIG. 5, procedure S28 and procedure S2
9 omits the second alarm described above. That is, when the remaining distance RD becomes equal to or less than the predetermined distance Da at the time t2, the alarm device starting means 5 is activated to output a start command, and the alarm device 6 issues an alarm to the hall 12. On the other hand, when the car 11 stops at time t3, the door starts to open, opens by a predetermined small width, temporarily stops at time t31, restarts at time t32, and fully opens at time t4. Also in the fourth embodiment, it is possible to directly alert the user by issuing an alarm, and to alert the user to open the door by operating the door. In addition, the warning may be "Please note the door." Or may be simply a buzzer sound.

[0023]

As described above, the elevator door safety device according to the present application activates the alarm device activating means when the car reaches a predetermined distance before the destination floor, and activates the alarm device in accordance with the activation signal. A warning is issued to the destination floor and the door is opened after the warning device is activated. For this reason, since an alarm is issued before the door is opened, it is possible to prevent a finger or the like from being pinched.

Further, the elevator door safety device according to the present application wirelessly transmits an activation signal of an alarm device activation means from a transmission antenna installed on a car, and transmits an activation signal to a reception antenna installed on a landing. The operation signal is received by engaging with the transmitting antenna within a predetermined range. For this reason, it becomes an independent apparatus which does not require connection with the control device of an elevator by an electric wire, and mounting work becomes easy. This simplification of the mounting operation is advantageous particularly in the case of mounting on an existing elevator.

Further, the elevator door safety device according to the present application is such that the door is once opened by a predetermined small width, stopped, restarted, and fully opened. Therefore, there is an effect that the user can be alerted to the opening of the door even by the operation of the door.

Furthermore, the safety device for an elevator door according to the present application opens the door once to a predetermined small width, stops the door, restarts it, and fully opens it, and also activates an alarm device when the door is opened. It is designed to draw attention.
For this reason, in addition to the alerting by the door opening operation itself, when the car reaches a predetermined distance in front of the destination floor and when the door starts to open, a warning is issued to the landing to further alert the user, This has an effect that a finger or the like can be prevented from being pinched.

Further, the elevator door safety device according to the present application issues an alarm by voice synthesis using an IC type automatic announcement. For this reason, there is an effect that the meaning of the alarm can be easily understood.

Further, the elevator door safety device according to the present application issues an alarm by a buzzer sound. For this reason, it is possible to provide an inexpensive alarm device, and it is possible to easily understand foreigners who are not familiar with Japanese.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a first embodiment of the present invention.

FIG. 2 is a side view showing an attached state of the constituent devices according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of the first embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 6 is an operation explanatory view of Embodiment 2 of the present invention.

FIG. 7 is a side view showing a conventional safety device for an elevator door.

[Explanation of symbols]

1 car position detection circuit, 2 call registration circuit, 3 stop decision circuit, 4 remaining distance calculation means, 5 alarm device activation means,
5a transmitting antenna, 6 alarm device, 6a receiving antenna, 7 door closing control device, 11 car, 11a car door, 12 landing, 14 three-way frame, 14a upper frame, 15
Landing door, 16 brackets, 17 brackets.

Claims (6)

[Claims] 1. An elevator door safety device which issues an alarm when a car opens a door at a destination floor, comprising: a remaining distance calculating means for calculating a remaining distance from the car to the destination floor; An alarm device activation device that is activated when the calculation result of the distance computation device reaches a predetermined distance; an alarm device that is activated by the activation signal of the alarm device activation device and issues the alarm at the landing on the destination floor; A door control device for controlling the door to open after the device is activated. 2. An alarm device starting means is provided with a transmitting antenna which is installed on a car and wirelessly transmits an operation signal of the alarm device. 2. The safety device for an elevator door according to claim 1, further comprising a receiving antenna engaged in a range to receive the operation signal. 3. The elevator door according to claim 1, wherein the door control device controls the door so that the door is once opened and stopped at a destination floor and then restarted and fully opened at the destination floor. Safety equipment. 4. The door control device controls the door so that the door is once opened and stopped at a destination floor and then restarted and fully opened at the destination floor. 2. The elevator door safety device according to claim 1, wherein the door control device is activated when the calculation result of the means becomes a predetermined distance and when the door control device opens the door by the predetermined small width. 5. The safety device for an elevator door according to claim 1, wherein the alarm device generates an alarm by voice synthesis of an IC type automatic announcement. 6. The elevator door safety device according to claim 1, wherein the alarm device issues an alarm by a buzzer.