JPH0912253A - Door safety device of elevator - Google Patents

Abstract

PURPOSE: To provide a door safety device of an elevator capable of preventing malfunction of a sensor to detect a passenger. CONSTITUTION: This is constituted of a signal processing device 10 to reversally control a door by a detection signal by setting a sensor 5 in the inside of the door 2 on the side of an elevator cage to effect a target and actuating the sensor 5 only immediately before the door is closed up. Consequently, it is possible to prevent a passenger from being sandwiched by the doors on the side of a platform having no safety device by detecting the passenger by using the sensor 5 actuated only immediately before the door 2 is closed and reversally controlling the doors.

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 which prevents a passenger using an elevator from getting into and out of a car from being caught by a door on the hall side where a safety device is not installed.

[0002]

2. Description of the Related Art In an elevator, a safety device called a safety shoe is installed on a door on a side of a car, and the door is turned over when a passenger gets in contact with the door when the door is closed. However, since this safety shoe cuts off its movement immediately before the door is closed, there is a risk that passengers may get caught in the door at this moment. Further, since a safety device such as a safety shoe is not installed on the hall door, when a person gets on or off the car, it may be caught in the hall door.

Japanese Unexamined Patent Publication (Kokai) No. 3-243588 proposes a device for mounting an infrared detector for detecting passengers on a hanger plate of an elevator door to improve the safety of door opening and closing.

[0004]

In the above-mentioned prior art, since the infrared sensor for detecting passengers is installed on the upper part of the door, there is a possibility that the infrared detection range will widen and malfunction as the detection position increases. . Further, since the infrared sensor always operates during opening and closing of the door, there is a possibility that the door may be turned over in response to a person who does not get on the elevator at the hall side.

Therefore, the present invention has been made in view of the method of detecting passengers in the door safety device as described above,
It is an object of the present invention to provide an elevator door safety device capable of preventing malfunction of a sensor for detecting passengers.

[0006]

To achieve the above object, the present invention is mounted on a door of an elevator car,
When the door is closed, a sensor for detecting the presence / absence of a passenger so that the passenger does not get caught in the hall door, and a control means for controlling the operation of the door by a detection signal of the sensor are provided. In the elevator door safety device, the operation of the sensor is restricted by the opening / closing position of the door.

[0007]

According to the above construction, when the door of the elevator is closed, it is possible to prevent passengers from getting caught in the door on the hall side, and by restricting the optoelectronic sensor operation depending on the opening / closing position of the door. Therefore, it is possible to prevent a malfunction that the door is turned over by a person near the hall.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment for detecting passengers using an elevator will be described below with reference to FIGS. Here, FIGS. 1 and 2 are perspective views showing an elevator door viewed from the landing side, FIGS. 3 and 4 are plan views showing the movement of the safety shoe and the landing side door viewed from the upper surface, and FIG. Is a block diagram of the apparatus of the present invention, and FIG. 6 is a processing flowchart of the present invention.

In FIGS. 1 and 2, reference numeral 1 is a car-side door safety shoe, 2 is a landing-side door, and 3 is an elevator car. Reference numeral 4 denotes a slit formed on the surface of the safety shoe 2 for allowing the light detected by the optoelectronic sensor to pass therethrough. Here, FIG. 1 is a diagram showing a state where the door is fully opened, and FIG. 2 is a diagram showing a state immediately before the door is completely closed in the direction of arrow a. Note that FIG. 2 shows only one door.

Generally, a safety shoe 1 is attached to a car side door of an elevator, and when the door is closed,
When passengers touch safety shoes 1, the door flips over,
The door is controlled so that it does not collide with passengers. In addition, the safety shoe 1 is shown in Fig. 1 when the door is open.
When the door is closed, it is retracted as shown in FIG.

3 and 4 are views showing the above-mentioned state from the top, 5 is an optoelectronic sensor, 6 is detection light of the optoelectronic sensor, 7 is a landing side wall, 8 is a car side wall, and 9 is a wall. The closed end of the hall door is shown. The optoelectronic sensor 5 has a feature of operating by itself receiving the detection light 6 output to the detection target. FIG. 3 is a diagram showing a state where the door is fully opened, and FIG. 4 is a diagram showing a state where the door is closed in the direction of the arrow a. In FIG. 3, the safety shoe 1 pops out more than the landing side door 2. It is in a state of At this time, the optoelectronic sensor 5 installed inside the safety shoe 1
Since the detection light 6 of No. 1 is deviated from the slit 4 of the safety shoe 1, the optoelectronic sensor 5 is in a state of not detecting passengers. However, when the door is closed in the direction of arrow a as shown in FIG. 4, the safety shoe 1 is retracted, and the safety device 1 is not operated. At this time, as shown in FIG. 4, the detection light 6 of the optoelectronic sensor 5 installed inside the safety shoe 3 passes through the slit 4 just before the door is closed and near the closed end 9 of the door 2 on the landing side. To detect passengers. The detection range of the optoelectronic sensor 5 can be limited to the detection target, and it is possible to detect only the range of the thickness of the door 2 on the landing side as shown in FIG.

FIG. 5 shows the configuration of the device of the present invention.
Reference numeral 10 is a signal processing device, 11 is a door control device, 12 is a door motor, and 13a and 13b are elevator doors. The signal processing device 10 is connected to the optoelectronic sensor 5, processes ON / OFF of the detection signal of the optoelectronic sensor 5, and outputs a door inversion command to the door control device 11. The door control device 11 controls the door motor 12 to open and close the elevator doors 13a and 13b.

Next, the control of the door by the operation of the optoelectronic sensor 5 will be described with reference to the processing flowchart of FIG. First, in S1, it is determined whether the door is opened by the door opening / closing signal of the door control device 11. If the door opens,
In S2, the power of the photoelectronic sensor 5 is turned on. Then, in S3, it is determined whether the optoelectronic sensor 5 is operating. Since the detection signal of the optoelectronic sensor 5 passes through the slit 4 only at the closed end of the door to detect the passengers getting on and off, it is in an operating state in other cases. Therefore, the process of S3 is repeatedly performed until the door is closed, and when the door is closed and is close to the closing end, the optoelectronic sensor 5 turns off as in S4.
After that, the passengers are detected. Next, in S5, it is detected whether the optoelectronic sensor 5 is operating, that is, whether or not the passenger has reacted to the passengers. If the optoelectronic sensor 5 is operating, the process proceeds to S6 to output a door inversion command to the door control device 11. Then, the door control device 11 reverses the door motor 12 in S7, and the door is opened in S8. In S5, when the optoelectronic sensor 5 does not operate, it is a case where the passenger does not react to the passengers, and the process proceeds to S9 to determine whether the door is closed. If the door is not closed, the process of S5 is repeated until it is closed. When the door is closed in S9, the power source of the photoelectric sensor is turned off in the next S10, and the processes from S1 are repeated.

In the embodiment, the optoelectronic sensor is used to detect passengers, but any optoelectronic sensor can be used as long as the sensor operates by receiving the detection light output to the object to be detected. It can be applied without limitation.

[0015]

According to the present invention, when a door of an elevator is closed, a sensor detects a passenger getting on and off the car, thereby preventing the passenger from being caught in a landing door without a safety device. It is possible to provide a door safety device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an open door of an elevator as seen from a landing side.

FIG. 2 is a perspective view showing a closed door of an elevator as seen from the landing side.

FIG. 3 is a plan view showing an open elevator door as viewed from above.

FIG. 4 is a plan view showing a closed elevator door as seen from above.

FIG. 5 is a configuration diagram showing an embodiment of an elevator door safety device of the present invention.

FIG. 6 is a flowchart showing a processing procedure of an elevator door safety device according to the present invention.

[Explanation of symbols]

 1 Safety Tissue 2 Door on Door 3 Car 4 Slit 5 Photoelectric Sensor 6 Photoelectric Sensor Detection Light 7 Wall on Landing Side 8 Wall on Car Side 9 Door End on Landing Side 10 Signal Processing Device 11 Door Control Device 12 Door Motor 13a, 13b Elevator doors

Claims (2)

[Claims] 1. Attached to a door of an elevator car,
When the door is closed, a sensor for detecting the presence / absence of a passenger so that the passenger does not get caught in the hall door, and a control means for controlling the operation of the door by a detection signal of the sensor are provided. An elevator door safety device according to claim 1, wherein the operation of the sensor is restricted depending on an opening / closing position of the door. 2. The elevator door safety device according to claim 1, wherein the detection range of the sensor is limited to a certain range.