JPH0543181A - Safety device for passenger conveyor - Google Patents

Abstract

PURPOSE:To provide a safety device for passenger conveyor in which a safety device at the draw part of an escalator handrail always functions stably and can be improved easily. CONSTITUTION:A fixed piece 15 for suppressing a displacement of a working piece 14 is fixed to the end of the contact portion 14c of the working piece 14 made in contact with switches 12 and 12a.

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 improvement of a safety device for an entrance / exit of a handrail.

[0002]

2. Description of the Related Art Generally, a passenger conveyor is constructed such that the outward side of a circulating handrail is guided along the periphery of the balustrade and the returning side enters inside the lower part of the balustrade. And, for example, at the entrance of the handrail at the bottom of the balustrade
A safety device as disclosed in Japanese Patent Laid-Open No. 6-48388 is provided, and when an external force is applied to this safety device, a detection switch inside the safety device shuts off electricity and stops the operation of the passenger conveyor.

[0003]

In the above prior art, a part of the safety device is constituted by a spring plate which is a movable body, and the safety device is operated when the spring plate is retracted by an external force. However, if a strong impact force is applied to the mop when cleaning the building floor, for example, the displacement of the spring plate will become excessive,
There is a problem that part of the spring plate floats above and rides on the head of the switch and does not return to the steady position, and it does not function as a safety device, so it is not applied to the actual machine at present. Is.

It is an object of the present invention to provide a safety device for a passenger conveyor, in which the safety device always performs stable operation and the device can be easily improved.

[0005]

[Means for Solving the Problems] In order to achieve the above object, inside the inlet provided at the handrail entrance / exit,
A support body to which a switch for detecting an external force pressing the front plate of the inlet is fixed, and a leaf spring having one end fixed to the support body and the other end being a bending portion facing the front plate of the inlet, An operating piece having a contact portion that can come into contact with the switch is provided at the rear end side which is located at the tip of the front portion connected to the bent portion of the leaf spring and is folded back in an inverted U shape. In the safety device of the passenger conveyor that is designed so that the passenger conveyor stops when the switch operates through the piece, in a configuration in which a fixed piece that suppresses the displacement of the operation piece is fixed to the end portion of the contact portion of the operation piece. It was done.

[0006]

Since the present invention is configured as described above, even if a strong impact force is applied to the operating piece, the fixing piece contacts the switch to suppress the displacement of the operating piece, and the operating piece is attached to the head of the switch. The safety device can be maintained in a stable state at all times because it does not ride up.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The passenger conveyor, such as an escalator, is an endless entrance and exit 2 provided at both ends in the traveling direction of the tread 1, which is connected endlessly, and a balustrade 3, which is erected along both sides of the tread 1. The handrail 4 includes a handrail 4 that moves along the periphery of the balustrade 3 in synchronization with the tread 1, and a frame body (not shown) installed to support these.

The balustrade 3 is a parapet panel 5 which is supported by the frame body and stands upright, a handrail frame 6 which guides the handrails 4 attached to the periphery of the parapet panel 5, and a frame body of the parapet panel 5. An inner deck cover 7 for covering a supporting portion for the outer deck cover and an outer deck cover (not shown) are provided.

A safety device including a rubber cover 11, a switch 12 and an operating body 14 is provided at the entrance of the handrail 4. The switch 12 is provided with a contact (not shown) inside, and is a cylinder 12 that is brought into contact with the operating body 14.
a is provided. The actuating body 14 includes a leaf spring 14a, an actuating piece 14b, and a contact portion 14c that comes into contact with the cylinder 12a.

The operating body 14 and the switch 12 are fixed to the support body 13 by fastening members 14d and 12b, respectively. The fixing piece 15 bent into a dogleg is fixed to the end of the contact portion 14c.

When a cleaner who is cleaning around the entrance / exit 2 accidentally accidentally hits the actuating body 14 with a mop while the escalator equipped with the safety device constructed as described above is in operation, 14 displaces to come into contact with the contact portion 14c, and a contact (not shown) opens to stop the escalator. When the displacement is excessive, the actuation type 14b causes the cylinder 12a to
May surface to the top of the. To prevent this, actuation piece 1
During displacement of 4b, the fixed piece 15 and the lower portion of the cylinder 12a are brought into contact with each other to suppress the displacement, and the operating piece 14b is held at the steady position.

[0012]

According to the present invention, even if a strong impact force is applied to the operating piece, the fixed piece contacts the switch to suppress the displacement of the operating piece, and the operating piece does not ride on the head of the switch. Since it disappears, the safety device can always be kept in a stable state.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a safety device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing how the safety device of FIG. 1 is attached to an escalator.

[Explanation of Codes] 11 Rubber Cover 12 Switch 12a Cylinder 14 Actuator 15 Fixing Piece

Claims (1)

[Claims] 1. A support body in which a switch for detecting an external force for pressing a front plate of the inlet is fixed inside an inlet provided at an inlet / outlet of a handrail, and one end is fixed to the support body and the other end is an inlet. The leaf spring, which is a bent portion facing the front plate, and the rear end, which is located at the tip of the front portion connected to the bent portion of the leaf spring and folded back in an inverted U shape, abuts on the switch. A safety device for a passenger conveyor, in which a working piece serving as a possible contact portion is provided, and the passenger conveyor is stopped when a switch is actuated through the working piece, in an end portion of the contact portion of the working piece. A safety device for a passenger conveyor, characterized in that a fixing piece for restraining displacement of the actuating piece is fixed to the.