JPH0881171A - Safety device for passenger conveyor - Google Patents

Abstract

PURPOSE: To provide a safety device for a passenger conveyor by which a nip accident of a passenger in a triangular part crossing point of the passenger conveyor can be surely prevented without any erroneous operation. CONSTITUTION: In a triangular space part, 3 formed between a mobile handrail 2A in a passenger conveyor 1 and an upper story side floor 2, plural protrusion detecting sensors 5A-5C detecting infrared rays are arranged, while a protrusion continuously monitoring device 6 synchronizing the detection signals of the protrusion detecting sensors 5A-5C with the moving speed of the passenger conveyor 1 is arranged. When protrusion of a passenger is continuously detected by means of the protrusion continuously monitoring device 6, the passenger conveyor 1 is stopped.

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 a passenger conveyor, and more particularly to a safety device for a passenger conveyor which is suitable for preventing an accident that occurs when a passenger runs off a moving handrail.

[0002]

2. Description of the Related Art As a safety device for a passenger conveyor for preventing an accident that occurs when a passenger gets out of a moving handrail, conventionally, Japanese Patent Laid-Open No. 252896/1988 discloses a plurality of optical sensors to cross a triangular portion. There is a description of a technique for grasping the degree of danger to passengers according to the position of the activated optical sensor according to the distance of the point and operating the passenger conveyor corresponding to the degree of danger.

[0003]

The above-mentioned prior art has a drawback in that it is impossible to determine whether the object protruding from the moving handrail is a baggage or a passenger at the intersection of the triangular portions because an optical sensor is used. In addition, the operation of the optical sensor that immediately stops the passenger conveyor detects the hand of the passenger who is instantaneously put out, so that there is a problem that an accidental stop that does not result in a trapped accident occurs.

An object of the present invention is to provide a safety device for a passenger conveyor that reliably prevents a passenger's jamming accident at a triangular intersection of the passenger conveyor without malfunction.

[0005]

In order to achieve the above object, the present invention is directed toward the floor between the upper and lower floors so as to cross the horizontal ceiling of the building or the exterior of another passenger conveyor adjacent thereto. A plurality of protrusions are arranged in a triangular boundary space formed between the moving handrails of the traveling passenger conveyor, detect infrared rays emitted from within a predetermined distance, and output a signal, and the plurality of protrusions. When each of the output signals of the detection sensors synchronizes with the moving speed of the passenger conveyor and the continuous protrusion monitoring device, when the plurality of protrusion detection sensors continuously detect the protrusion of the passengers. A stop signal for stopping the passenger conveyor is output.

[0006]

With this configuration, a plurality of infrared detection sensors are used as the protrusion detection sensor, and the operation of the plurality of protrusion detection sensors is controlled by the continuous monitoring device.
The passenger conveyor is stopped in synchronization with the moving speed of the passenger conveyor, and when the passenger's protrusion is continuously detected, the passenger conveyor is stopped so that the passenger's pinch accident can be prevented and no malfunction occurs.

[0007]

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, an upper floor is provided in a triangular space 3 formed by an upper floor 2 of a building in which an escalator 1 which is a passenger conveyor is installed, a balustrade 2 of the escalator 1, and a moving handrail 2A above. A triangular protection plate 4 is attached to the side floor 2. Also, from the intersection 3A between the triangular space 3 and the moving handrail 2A, 300 mm, 600 mm, 1400 mm
The protrusion detection sensors 5A, 5B, and 5C that output a signal when detecting a predetermined infrared ray emitted from the human body are arranged inside the triangular protective plate 4 of the upper floor 2 on the upper side, respectively. Each detection distance is 15
It is adjusted within 0 mm, 350 mm, and 800 mm.

Further, the protrusion detection sensors 5A, 5B, 5
C is connected to a control device 6 controlled by a predetermined program, and is connected between a motor IM that drives the escalator 1 and power lines R, S, and T, and an escalator start commanding an ascending / descending operation and a stop. Stop signal 6 to circuit 7
Output a. Further, the output line of the control device 6 is connected to the speaker SP installed on the upper floor 2 of the triangular space 3.

Next, the operation of the passenger conveyor safety device thus constructed will be described.

First, the escalator is in rated traveling operation (step S1). At this time, a passenger (not shown) riding on the step 1A climbs over the moving handrail 2A and leans on the body, and the protrusion detection sensor 5C detects the passenger ( In step S2), the control device 6 transmits a message stored in advance in the speaker SP, for example, a message signal "Please do not lean on your body because it is dangerous", and the speaker SP performs caution broadcasting (step S3). Next, 1.8 seconds after the protrusion detection sensor 5C detects the passenger,
That is, when the passenger who leans out of the body comes to the position of the protrusion detection sensor 5B while riding on the step 1A, it is confirmed whether or not the protrusion detection sensor 5B detects the passenger (step S
4). Here, when the protrusion detection sensor 5B detects a passenger, the control device 6 issues a warning by a buzzer sound to the passenger via the speaker SP (step S5). Furthermore, 0.5 seconds after the protrusion detection sensor 5B detects the passenger, that is, when the passenger comes to the position of the protrusion detection sensor 5A,
The protrusion detection sensor 5A confirms the presence or absence of passenger detection (step S6). Here, when the protrusion detection sensor 5A detects a passenger, the control device 6 sends a stop signal 6 to the start circuit.
a is output and the rotation of the motor IM is stopped, that is, the escalator 1 is stopped (step S7).

Since the escalator 1 is stopped at the position of the protrusion detection sensor 5A 300 mm before the intersection 3A, the passenger is not caught between the moving handrail 2A and the upper floor 2 side. Even if it is pinched, it only requires minor injury.

Further, since the passenger's body is continuously detected by the protrusion detection sensors 5C to 5A, erroneous stoppage is eliminated.

[0014]

According to the present invention, a plurality of infrared ray detection sensors of the protrusion detection sensor are used, and the operation of the plurality of protrusion detection sensors is continuously protruded and is continuously synchronized with the moving speed of the passenger conveyor. Since the passenger conveyor is stopped when the passenger's protrusion is continuously detected, the passenger's pinch accident can be prevented and no malfunction occurs.

[Brief description of drawings]

FIG. 1 is a side view and an essential block diagram of an escalator according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a flowchart illustrating an operation of the control device according to the exemplary embodiment of the present invention.

[Explanation of symbols]

 1 Escalator 2 Upper floor side floor 3 Triangular part space part 4 Triangular part protection plate 5A, 5B, 5C Overhang detection sensor 6 Continuous operation monitoring device 6a Stop signal 7 Control device SP speaker

Claims (1)

[Claims] 1. A triangle formed between a horizontal ceiling portion of a building or a moving handrail of a passenger conveyor traveling toward an upper and lower floor so as to intersect with an exterior portion of another adjacent passenger conveyor. A plurality of protrusion detection sensors that are arranged in the boundary space portion of the shape, detect infrared rays emitted from within a predetermined distance, and output a signal, and output signals of the plurality of protrusion detection sensors, the moving speed of the passenger conveyor. In the continuous protrusion monitoring device that is synchronized with, and in the continuous protrusion monitoring device, the plurality of protrusion detection sensors,
A safety device for a passenger conveyor, which is configured to output a stop signal for stopping the passenger conveyor when the protrusion of the passenger is continuously detected.