JP2010047344A - Elevator doorway safety device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an elevator doorway safety device capable of detecting an obstacle or a person across a wide range mainly on a bottom face of a landing door, and also sufficiently detecting an obstacle and the like which locates near the landing door and might be drawn between the landing door and a landing jamb. <P>SOLUTION: This elevator doorway safety device comprises a landing door including a sliding door openably/closably installed to a landing doorway provided to a landing, at which a car of an elevator stops, a jamb comprising an upper frame arranged at an upper edge of the landing doorway and side columns arranged on both edges, and sensor means having a sensor light source outputting sensor lights and detecting an obstacle by blocking an optical axis 9a of the sensor light in the middle. The optical axis 9a passes through an interval formed between the landing door 1 and the side columns 2b, and the plurality of optical axes 9a are provided on the landing side of the landing door. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator entrance / exit safety device.

  In the conventional elevator entrance / exit safety device, the elevator door opening / closing door, the car door opening / closing the car room entrance / exit, the car door, and the car door side surface along the car door side. The car side sensor that passes through the optical axis and detects the interruption of the optical axis, and the car door, respectively, emit light toward the landing side and incident light returning from the landing side to the car side. A landing-side sensor that is provided on the landing door to face each landing-side sensor, passes light from the landing side along the landing-side surface of the landing door, and passes the optical axis. There is known an optical system for returning to (see, for example, Patent Document 1).

JP 2005008300 A

However, in the conventional elevator entrance / exit safety device disclosed in Patent Document 1, a single optical axis used for the sensor is usually arranged substantially horizontally along the landing side surface of the landing door. There is a problem that obstacles and people cannot be detected over almost the entire surface of the door.
Especially for short children and things that cannot be detected, for example, in elevators where windows are provided on landing doors such as observation elevators, children who look into this window arrive at the elevator. When the door is opened, there is a problem that it may be drawn between the landing door and the landing three-way frame.
In addition, since the optical axis on the landing side is arranged in the immediate vicinity of the surface on the landing side of the landing door, the landing door is almost in contact with the landing door at a position where the optical axis is blocked. It can not be detected unless it is an obstacle just before being pulled in between the three-way frame, and there is a risk that it will be pulled in between the landing door and the three-way frame near the landing door There is also a problem that an obstacle cannot be detected.

  The present invention has been made to solve the above-described problems, and can detect obstacles and people over a wide area centering on the lower surface of the landing door, and is located near the landing door. Thus, an elevator entrance / exit safety device capable of sufficiently detecting an obstacle or the like that may be drawn between the landing door and the landing three-way frame is obtained.

  In the elevator entrance / exit safety device according to the present invention, a landing door comprising a sliding door that can be opened and closed at a landing entrance provided at a landing where the elevator car stops, and an upper edge of the landing entrance. A sensor that has a three-sided frame composed of side pillars respectively disposed on the upper frame and both side edges and a sensor light source that outputs sensor light, and detects an obstacle by blocking the optical axis of the sensor light in the middle. And the optical axis passes through a gap formed between the landing door and the side pillar, and a plurality of the optical axes exist on the landing side of the landing door.

  The present invention relates to an elevator entrance / exit safety device, a landing door comprising a sliding door that can be freely opened and closed at a landing entrance provided in a landing where the elevator car stops, and an upper door disposed at an upper edge of the landing entrance. A three-way frame composed of side pillars disposed on the frame and both side edges, a sensor light source for outputting sensor light, and sensor means for detecting an obstacle when the optical axis of the sensor light is interrupted in the middle; The optical axis passes through a gap formed between the landing door and the side pillar, and a plurality of the optical axes exist on the landing side of the landing door. Obstacles and people can be detected over a wide area centering on the lower surface, and there is a risk of being caught near the landing door and between the landing door and the three-way frame. Fully check for obstacles An effect that can be.

Embodiment 1 FIG.
1 to 4 relate to Embodiment 1 of the present invention, FIG. 1 is a front view of an elevator hall, and FIG. 2 is a diagram illustrating a state in which an obstacle or the like near the landing door is detected, FIG. 3 is a plan sectional view of the landing and the car, and FIG. 4 is a flowchart showing the operation of the elevator entrance / exit safety device.
In the figure, 1 is a landing door made up of a sliding door that can be freely opened and closed at a landing doorway provided in the elevator hall, and 2 is an upper frame 2a disposed on the upper edge of the landing doorway and both side edges. It is a three-way frame composed of the side pillars 2b provided. The landing door 1 and the side pillar 2b are arranged such that a gap 3 is formed between the landing door 1 and the side pillar 2b of the three-way frame 2.
On the upper frame 2a of the three-way frame 2 above the landing doorway, an elevator operation display 4 for displaying the current traveling direction and current position of the elevator is provided.
In addition, a hall operation panel 5 is installed on the hall wall at the side of the hall entrance, and the hall operation panel 5 is used for registering an upward hall call when pressed by a user. A direction hall call button 5a and a downward hall call button 5b for registering a downward hall call when pressed by the user are provided.
In the elevator hoistway, there is a car 6 provided with a car room 6a for a user to ride inside. The car doorway provided on the front of the car 6 has an elevator. A car door 7 made of a sliding door is installed to be openable and closable. The landing door 1 and the car door 7 are arranged so as to face each other when the car 6 stops on the floor of the landing, and the landing door 1 and the car door 7 are The door 6 is configured to open and close in conjunction with the car 6 being stopped.

Sensor light sources 8 are respectively attached to the outsides of both side surfaces of the car 6. From these sensor light sources 8, for example, in the infrared region approximately horizontally toward the front of the car 6, that is, toward the landing side. Sensor light 9 is output.
These sensor lights 9 are obliquely moved downward and forward by reflecting mirrors 10 attached respectively to positions outside the side pillars 2b constituting both sides of the three-way frame 2, that is, on the surface opposite to the landing entrance side, near the hoistway. It becomes an optical axis 9a that passes through the gap 3 formed between the landing door 1 and the side pillar 2b. These optical axes 9a pass through a position slightly above the center in the vertical direction of the landing door 1 in the gap 3 and proceed diagonally downward and forward, in front of the opposite side pillar 2b (the landing). It is oriented toward the direction.

In other words, a plurality of, here two, optical axes 9a exist on the surface of the landing door 1 on the landing side, and one of the optical axes 9a is one of the landing door 1 and the other. The other side pillar that is opposed to the side pillar 2b passes through a position slightly above the center of the landing door 1 in the gap 3 that is formed between the side pillar 2b and the front side. It is directed in the direction of the landing 2b.
The other of the optical axes 9a is slightly above the center in the vertical direction of the landing door 1 in the gap 3 formed between the landing door 1 and the other side pillar 2b. It passes through the position and proceeds obliquely downward and forward, and is directed in the direction closer to the landing of the opposite side pillar 2b.
The optical axes 9a intersect with each other at substantially the center in the left-right direction of the landing door 1.

The optical axis 9a is configured such that the obstacle is sensed by a sensor when an obstacle such as an elevator user 11 interrupts the optical axis 9a in the middle. The side pillars 2b are attached to the floors.
The sensor light source 8, the sensor light 9, the optical axis 9a, and the reflection mirror 10 constitute sensor means.

The flow chart of FIG. 4 shows the operation of the entrance / exit safety device in this embodiment.
When the elevator arrives and the car 6 stops at the landing (step S1), the sensor light source 8 is activated and the sensor light 9 is output and reflected by the reflecting mirror 10 provided on the stop floor. Thus, the optical axis 9a is formed on the landing side of the landing door 1 (step S2).
In step S3, it is determined whether or not the sensor detects an obstacle, that is, whether or not the optical axis 9a is blocked by an obstacle such as the user 11. In this determination, if it is determined that the sensor does not sense an obstacle, that is, it is determined that the optical axis 9a is not blocked, the process proceeds to step S7, and the landing door 1 and the car door 7 are moved. After opening, step S8 is reached and the series of operations ends.

On the other hand, if it is determined in step S3 that the sensor detects an obstacle, that is, it is determined that the optical axis 9a is blocked, the process proceeds to step S4, where the landing door 1 and the car door 7 are opened. Not (when the door opening operation is being performed, the door opening operation is stopped and the reversing door is closed), and a warning sound for calling attention to the user 11 is sounded.
After this alarm sounding, the routine proceeds to step S5, where it is determined whether or not the sensor is still detecting an obstacle, that is, whether or not the optical axis 9a is still blocked. In this determination, if it is determined that the sensor is no longer detecting an obstacle, that is, it is determined that the optical axis 9a is no longer blocked, the process proceeds to step S7, where the landing door 1 and the car are moved. After the door 7 is opened, the process reaches step S8, and the series of operations ends.

On the other hand, if it is determined in step S5 that the sensor is still sensing an obstacle, that is, it is determined that the optical axis 9a is still blocked, the process proceeds to step S6, where the landing door 1 And the car door 7 is kept closed, for example, “Please leave the door”, alerting the user 11 and detecting an obstacle near the landing door 1. Since the door cannot be opened, a warning announcement is issued asking for the distance between the landing door 1 and the obstacle.
Then, the process returns to step S5, and it is determined again whether or not the sensor is still sensing an obstacle. If it is determined that the sensor is no longer sensing an obstacle, the process proceeds to step S7. After moving to open the landing door 1 and the car door 7, the process reaches step S8, and the series of operations ends. On the other hand, if it is determined in step S5 again that the sensor still senses an obstacle, the operation in step S6 and until the sensor determines that the obstacle is not sensed. The determination in step S5 is repeated.

In the elevator entrance / exit safety device configured as described above, a plurality of optical axes are arranged on the landing side surface of the landing door, and one of these optical axes is between the landing door and one side pillar. Pass through a position slightly above the vertical center of the landing door in the gap formed in the gap and proceed diagonally downward and forward, directed to the direction of the position near the landing on the opposite side pillar, The other of the optical axes passes through a position slightly above the center in the vertical direction of the landing door in the gap formed between the landing door and the other side pillar, and proceeds diagonally downward and forward. The one side pillar is oriented in the direction toward the landing.
Therefore, since these optical axes are arranged at an angle from substantially horizontal to the downward direction, obstacles and people can be detected over a wide range centering on the lower surface of the landing door, and these optical axes are Because it is arranged at an angle from the substantially parallel to the landing door to the landing door, there are enough obstacles etc. that are near the landing door and may be drawn between the landing door and the three-way frame Can be detected.
For this reason, for example, in an elevator provided with a window in a viewing door such as an observation elevator, a short child or the like looking into the window is detected by a small number of optical axes for sensors, and the short child Can be prevented from being drawn between the landing door and the three-way frame when the elevator arrives.

  In addition, a sensor light source that outputs sensor light is not provided at the landing on each floor, but is provided on the passenger car for reflection, and the sensor light output from this sensor light source is reflected in a predetermined direction at the landing on each floor. Since the configuration can be simplified by providing a mirror, the device can be efficiently created, transported, installed, etc., has good design at the landing, and is necessary for sensor operation. It is also possible to reduce the energy consumption.

It is a front view of the elevator hall in Embodiment 1 of this invention. It is a figure explaining the state in which the obstruction etc. near the landing door in Embodiment 1 of this invention are detected. It is a plane sectional view of a hall and a car in Embodiment 1 of the present invention. It is a flowchart which shows operation | movement of the elevator entrance-exit safety device in Embodiment 1 of this invention.

Explanation of symbols

1 landing door 2 three-way frame 2a upper frame 2b side pillar 3 gap 4 elevator operation display 5 landing operation panel 5a upward landing call button 5b downward landing call button 6 car 6a car room 7 car door 8 sensor light source 9 sensor light 9a Optical axis 10 Reflection mirror 11 User

Claims (4)

A landing door consisting of sliding doors that can be freely opened and closed at the landing entrance provided at the landing where the elevator car stops.
A three-sided frame composed of an upper frame disposed on the upper edge of the landing entrance and side pillars disposed on both side edges;
A sensor light source for outputting sensor light, and sensor means for sensing an obstacle by blocking the optical axis of the sensor light halfway,
The elevator entrance / exit safety device according to claim 1, wherein a plurality of the optical axes pass through a gap formed between the landing door and the side pillar, and a plurality of the optical axes exist on the landing side of the landing door.   The optical axis passes through a position closer to the upper side with respect to the vertical center of the landing door in the gap, proceeds obliquely downward and forward, and moves toward the landing of the opposite side pillar. Item 2. The elevator entrance / exit safety device according to Item 1. The plurality of optical axes are two,
One of the two optical axes passes diagonally below the center of the landing door in the gap formed between the landing door and one of the side pillars. Proceeding forward, heading toward the landing on the other side pillar facing the other,
The other of the two optical axes passes diagonally below the center in the vertical direction of the landing door in the gap formed between the landing door and the other side pillar. The elevator entrance / exit safety device according to claim 2, wherein the elevator entrance / exit safety device travels forward and heads toward the landing of one of the opposite side pillars. The sensor light source is provided in the car, and outputs the sensor light toward the front of the car.
The sensor means is attached to a position near the hoistway on the outer surface of the side pillar, and reflects the sensor light so as to pass through the gap formed between the landing door and the side pillar. The elevator entrance / exit safety device according to any one of claims 1 to 3, further comprising a reflecting mirror.

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