JP3522128B2 - Elevator door safety device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door safety device for preventing a human finger or the like from being caught in a narrow space between the door and the three-way frame when the elevator 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 Publication No. 2-94881. FIG. 7 is the same as the one described in the above publication, and in the figure, the entrance and exit formed in the front wall 13 of the hoistway where the car 11 moves up and down is partitioned by the three-way frame 14, and the landing door 15 interlocks with the car door 11a. Then the doorway is opened and closed. When a person approaches the hall door 15 when the hall door 15 opens, 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 fingers or the like from being caught in the narrow gap g between the three-way frame 14 and the landing door 15. Also,
Japanese Unexamined Patent Publication No. 6-316391 discloses a pressure detecting device provided on 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 disclosed in Japanese Utility Model Laid-Open No. 2-94881 has a floor of each floor. The detector 14b and the speaker 14c must be attached to the three-way frame 14. Therefore, the detector 14b is required for each floor, which is expensive. Especially when retrofitting to an existing elevator, there is also a problem that it takes time to modify the three-sided frame for mounting the detector 14b and the speaker 14c. In addition, JP-A-6-31
The safety device described in Japanese Patent No. 6391 cannot be detected unless a finger or the like is actually caught. Therefore, there is a problem in that it cannot be prevented from being caught. Further, even in this case, there is a problem that it is expensive when it is retrofitted to an existing elevator.
The present invention has been made to solve the above problems, and obtains an elevator door safety device that can prevent fingers and the like from being caught and that can also be easily attached to an existing elevator. The purpose is to

[0004]

The elevator door safety device according to the present application has a predetermined narrow width when the door is opened on the destination floor.
Just open it, stop the door and then restart it to fully open
Safety device for elevator doors equipped with a door control device
When the car reaches a certain distance before the destination floor,
When opening the door by the specified width,
It is designed to give an alarm to the landing.

Further, the elevator door safety device according to this application wirelessly transmits the operation signal of the alarm device starting means from the transmitting antenna installed on the car, and the receiving antenna installed at the hall. The alarm device is activated by engaging with the transmitting antenna within a predetermined range and receiving the operation signal.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 to 4 show a first embodiment of the present invention. Figure 1
Shows the entire configuration of the present invention, and 1 is a car position detection circuit, which detects the current position of the car 11 by counting the pulse signals from the pulse generator 8 as the car 11 moves up and down. 2 car destination button 11b and hall call button 1
Call registration circuit that registers the call when 2a is pressed, 3
Is a stop determination circuit, which determines stop when the car 11 reaches a predetermined distance L before the nearest preceding floor of the preceding floors and the call of the nearest preceding floor is registered.
The predetermined distance L is a distance required for control, and is set as a distance required to decelerate and stop at the nearest preceding floor. Reference numeral 4 denotes a remaining distance calculating means, which calculates the remaining distance from the current position of the car 11 to the destination floor when the stop is determined. This remaining distance calculation is commonly used,
Detailed description is omitted here. Reference numeral 5 is an alarm device starting means provided in the car 11, and the remaining distance calculating means 4 is a predetermined distance D.
It operates when it becomes a or less and wirelessly transmits the above operation signal through the transmitting antenna 5a.

Here, the predetermined distance Da is in front of the stop position of the car 11 so that an alarm can be issued to the car 11 when the car 11 has landed on the destination floor and the car door 11a and the landing door 15 start to open. For example, if the alarm is "Please be careful of the door.", It is set so that the door opens after the alarm is issued and the alarm content is understood. . Reference numeral 6 denotes an alarm device provided at the hall, which is composed of, for example, an IC type automatic announcement by voice synthesis, and the receiving antenna 6a is engaged with the transmitting antenna 5a within a predetermined range to receive the activation signal of the alarm device starting means 5. By doing so, it activates and issues an alarm at the landing, for example, "Be careful of 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 which is the floor landing range.

FIG. 2 shows a concrete 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 has a basket 11
Mounted on. The receiving antenna 6a is made of a rod-shaped body having a predetermined length, and is fixed to the hoistway side wall for each landing 12 by the brackets 16 and 17, so that the cage 11 of the transmitting antenna 5a can be reached before the car 11 reaches the predetermined distance Da. The rod-shaped body is recessed into the letter-shaped recess to be in a receivable state. The warning device 6 is provided in the upper frame 14a of the three-way frame 14 for each hall 12, and issues a warning to the hall 12 when the hall door 15 and the car door 11a are opened. The alarm device 6 includes an upper frame 14a.
Even if it is housed in the upper frame 14a without forming a through hole in it, the attention can be sufficiently given.

Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. 3 and the explanatory view of FIG. In FIG.
When the call is registered in step S11, the car 11 starts up at time t0 shown in FIG. 4 to perform a lifting operation in order to respond to the call in step S12. When the car 11 reaches the predetermined distance L on the nearest floor to which the car 11 precedes in step S13, step S14
Detects the preceding call on the nearest floor. If it has not arrived yet, the process returns to step S12 and waits for arrival. When the predetermined distance L before the nearest floor is reached (time t1), if there is a call to the preceding nearest floor, "Y" is obtained in step S15 and a stop decision is made in step S16. When there is no call at the preceding nearest floor, the process returns to step S12 and the car 11 continues to move up and down. When it is decided to stop, the control of the car 11 and the control of the alarm device 6 occur concurrently.

In the control procedure S17 of the car 11, the car 11 is decelerated. This deceleration control is performed so that the speed is commensurate with the remaining distance RD to the destination floor obtained by subtracting the distance that the car 11 moves 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 in common use and will not be described here.
In step S18, the remaining distance RD to the destination floor is calculated, and the step S
In 19 it is checked whether the remaining distance RD is less than or equal to the distance δ defined as the landing range. If it is greater than the distance δ, the process returns to step S17 and further deceleration control is performed. When the remaining distance RD is less than or equal to the distance δ, the car 11 is stopped in step S20 (time t3). Car door 11a and landing door 15 in step S21
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 close (time t5) in step S22, and fully close at time t6. If the call still remains, the result in step S23 is "Y" and the step S
Returning to step 12, the same processing is repeated thereafter. If no call remains, the process ends with "N".

(2) At the control time t1 of the alarm device 6, when the car 11 reaches a predetermined distance L from the nearest preceding floor and a call is detected and a stop decision is made (time t1), the destination floor is determined in step S24. The remaining distance RD up to is calculated. When the remaining distance RD is larger than the predetermined distance Da in step S25, the process returns to step S24, and the car 11 is set 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 is activated in step S26, and the activation command is output (time t2). When the start command is output in step S26, the alarm device 6 is used to dise
The alarm is issued to. Here, at time t2, the alarm device 6 is activated prior to opening the door, and “please be careful of the door.”
Is set to be issued.

According to the first embodiment, since the alarm is issued before the door is opened, it is possible to prevent a finger or the like from being caught. Further, since the alarm device 6 installed on each floor receives a signal wirelessly by the receiving antenna 10a,
It is an independent device that does not require a wire connection with the elevator control equipment. Moreover, the alarm device 6 is mounted on the three-sided frame 1
If the three-sided frame 14 is installed in the four-sided frame 4, the three-way frame 14 can be mounted without any change in the external appearance, so that the mounting work is easy. Further, the alarm device starting means 5 is installed on the car 11, and the remaining distance calculating means 4 is usually installed in the control panel installed in the machine room at the top of the hoistway. For this reason, when it is installed in an existing elevator, wiring work from the machine room to the car 11 is required. However, since the number of wires in this part is large, a spare electric wire is provided in advance. Since the spare electric wire is used for wiring to the alarm device starting means 5, no substantial wiring work is required. Therefore, the alarm device starting means 5 can be easily installed on the car 11, and the installation work is easy.

Embodiment 2. In the first embodiment, the car door 11a and the landing door 15 are assumed to be fully opened without being stopped halfway, but in the second embodiment, the door is once opened by a predetermined narrow width and then stopped, and then restarted. It was designed to be fully opened. 5 and 6 show the operation of the second embodiment of the present invention. 5, the same symbols as in FIG. 3 indicate the same processing. That is, when the call is registered, the car 11 starts the ascending / descending operation and the time t
When the predetermined distance L before the nearest floor preceding by 1 is reached,
When the call of the nearest floor is registered, it is decided to stop, and thereafter, the car 11 is decelerated and gradually decelerated according to the curve shown in FIG. 6, and at time t3, the remaining distance DR is the distance δ which is the landing range. When the following occurs, the car 11 stops and opens the door. Further, when it is decided to stop and the car 11 reaches a predetermined distance Da before the destination floor at time t2, the alarm device 6 is activated to issue an alarm to the hall. The above is the same processing as in FIG. 3, and in FIG. 5, steps S11 to S20 and step S24 are performed.
~ It is the processing of the part shown in step S27.

The parts added in the second embodiment will be described below. (1) Control of Car 11 In FIG. 5, when the car 11 is stopped in step S20 (time t3), the door is opened in step S21a. In step S21b, the door is stopped by opening a predetermined narrow width (time t
31), the door is opened again in step S21c (time t32) and fully opened at time t4. When the passenger finishes getting on and off, the door starts to be closed in step S22 (time t5), time t6.
To close it completely. If the call is registered in step S23, the process returns to step S12 and the same process is repeated. If no call is registered, the process ends. In addition, in order to open the door by a predetermined small width and stop the door, a method of detecting the opening of the door may be used, or a method of opening the door for a predetermined small time and then immediately stopping it may be used.

(2) Control of the alarm device 6 When the car 11 is determined to stop in step S16 (time t1) as in the first embodiment, the car 11 is decelerated in steps S24 to S27, and at time t2. The first alarm is issued. Further, when the door opening is started (time t3) in step S21a, the alarm device starting means 5 is operated in step S28 and the 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 narrow width, the door is temporarily stopped and then restarted to be fully opened. Therefore, the operation of the door can also alert the user. Further, 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 hall, and when the door opening is started (time t3), the alarm device is activated. Since the second alarm is issued from 6, it is possible to call the user further attention in addition to calling attention by the door opening operation itself.

Embodiment 3. In the second embodiment, the second alarm is issued when the door is opened from the fully closed state, that is, the activation signal is issued to the alarm device 6 at time t3. The warning is intended to call attention from immediately before the door is opened to the early stage of the door opening operation. The third embodiment is made in order to thoroughly implement such an intention, and in FIG. 5, in FIG. 5, between the “stop of the car 11” in step S20 and the “start of door opening” in step S21a, the “alarm device activation in step S28” is performed. Command"
Then, “alarm device → alarm issuance” in step S29 is inserted. That is, the car 11 is started after the car 11 is stopped and an alarm is issued. Also according to the third embodiment, since the alarm is issued before the door is opened, it is possible to prevent the fingers and the like from being caught, and the installation work to the 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 hall and start the door opening ( At time t3), the second alarm is issued from the alarm device 6. In the fourth embodiment, in FIG. 5, the second warning described in steps S28 and S29 is omitted. That is, at time t2, the remaining distance R
When D becomes equal to or less than the predetermined distance Da, the alarm device activation means 5 is activated and an activation command is output, and the alarm device 6 causes the hall 12 to exit.
The alarm is issued to. On the other hand, when the car 11 stops at the time t3, the door starts to open, and the door is opened by a predetermined narrow width and the time t31
After being temporarily stopped at, the system is restarted at time t32 and fully opened at time t4. In the fourth embodiment as well, it is possible to call attention directly by issuing an alarm, and also to call the attention of the user to open the door by the action of the door. The alarm may have the content "Please be careful of the door.", Or may simply be a buzzer sound.

[0019]

As described above, the elevator door safety device according to the present application has a predetermined function when the door is opened at the destination floor.
Open a small width, stop the door once, and then restart it to fully open
Safety equipment for elevator doors equipped with door control device
When the car reaches a predetermined distance in front of the destination floor
And when opening the door by the above specified width,
It is designed to give an alarm to the landing. For this reason,
In addition to calling attention by the door-opening action itself,
When a predetermined distance before the target floor is reached and when the door starts to open
Will issue a warning at the landing to alert the user to further attention.
It is possible to prevent fingers from being caught.
Produce an effect.

Further, the elevator door safety device according to the present application wirelessly transmits the operation signal of the alarm device activation means from the transmitting antenna installed on the car, and the receiving antenna installed at the hall. Engage with the transmitting antenna within a predetermined range to receive the operation signal and activate the alarm device.
It was made to let. For this reason, it becomes an independent device that does not require connection to the elevator control equipment by an electric wire, and the mounting work becomes easy. This simplification of the mounting work has an effect of being particularly advantageous when mounting on an existing elevator.

[Brief description of 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 a mounted 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 diagram of the second embodiment of the present invention.

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

[Explanation of symbols]

1 car position detection circuit, 2 call registration circuit, 3 stop determination 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.

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-56-37974 (JP, A) JP-A-5-278963 (JP, A) JP-A-5-70070 (JP, A) JP-A-7- 157247 (JP, A) Actual opening 59-46964 (JP, U) Actual opening Flat 1-176674 (JP, U) Actual opening Sho 59-105266 (JP, U) Actual opening Sho 63-167441 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B66B 1/00-13/30

Claims (2)

(57) [Claims] 1. When opening the door on the destination floor, the door opens only a specified width.
Stop the above door and then restart it to fully open it.
Elevator door safety device with door control device
To calculate the remaining distance from the car to the destination floor
When the calculation result of the distance calculation means reaches a predetermined distance and
When the door control device opens the door by the predetermined narrow width,
Alarm device activation means that operate independently and this alarm device activation
Each time the means is activated, a warning is issued to the landing on the destination floor.
Elevator safety device with alarm device. 2. The alarm device activating means is provided with a transmitting antenna installed on the car and wirelessly transmitting an operation signal thereof, and the alarm device is installed in a hall and has the transmitting antenna and a predetermined antenna. 2. The elevator door safety device according to claim 1, further comprising a receiving antenna that engages in range to receive the actuation signal.