JPH07252076A - Safety device for passenger conveyor - Google Patents

Abstract

PURPOSE:To enable it to keep any function as a safety device by means of electrical resetting in fulfilling its duties as a movable body in the case where a stag impact force due to mopping or the like is produced in this safety device. CONSTITUTION:In this passenger conveyor equipped with a movable body 16 installed in an inlet part of a traveling handrail circulating, and a means detecting the displacement of this movable body 16 in the traveling direction of this traveling handrail and stopping this passenger conveyor, a fixer 15 is set up in and around the movable body 16 set up in the inner part of a protector 19, thereby checking any displacement of this movable body 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor such as an escalator or an electric road, and more particularly to a passenger conveyor having a safety device at the entrance of a moving 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 return side enters the inside of the lower part of the balustrade. Then, at the entrance of the moving handrail at the bottom of the balustrade, for example, Japanese Patent Laid-Open No.
A safety device as disclosed in Japanese Patent No. 48388 is provided, and when an external force is applied to this safety device, the detection switch inside the safety device shuts off electricity and stops the operation of the passenger conveyor.

[0003]

In the prior art, a part of the safety device is composed of a spring plate which is a movable body, and the safety device operates when the spring plate is retracted by an external force. If a mop etc. when cleaning the building floor is hit and a strong impact force is applied, the spring plate will be excessively deformed, a part of the spring plate will rise to the upper part and ride on the head of the detection switch to return to the steady position, At present, the function as a safety device is no longer fulfilled and it has not been applied to an actual machine.

An object of the present invention is to provide a passenger conveyor that does not change the structure inside the safety device and always performs a stable function.

[0005]

In order to achieve the above object, the present invention comprises a protective body and a movable body provided at an entrance of a circulating moving handrail, and the moving direction of the moving handrail of the movable body. In the passenger conveyor having a safety device that stops the operation when there is a displacement to, the fixed bodies are provided on both sides of the periphery of the movable body to suppress the change of the movable body.

[0006]

Since the present invention is configured as described above, when the movable body moves backward by a certain amount, it comes into contact with the fixed body, and the function as a safety device is stabilized without floating as in the conventional case.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Passenger conveyors, e.g. escalators,
As shown in FIG. 3, a tread 1 that is endlessly connected and rotates.
An entrance / exit 2 provided at both ends in the traveling direction, a balustrade 3 provided upright along both sides of the rotating tread 1, and a moving handrail 4 that moves the periphery of the balustrade 3 in synchronization with the tread 1. , And a frame body (not shown) installed to support them.

The balustrade 3 includes a balustrade panel 5 which is supported by the frame body and stands upright, a handrail frame 6 which guides a moving handrail 4 attached to the periphery of the balustrade panel 5, and a frame body of the balustrade panel 5. It is provided with an inner deck cover 7 and a skirt guard 8 which cover the supporting portion for the. A safety device 10 is installed at the entrance of the moving handrail 4 of the skirt guard 8. As shown in FIG. 1, the safety device 10 is installed at a position where it contacts a movable body 16 composed of a spring plate installed inside surrounded by an inner deck cover 7 and a skirt guard 8 and a part of the movable body 16. Fixed body 15 and rubber body protector 1
9. Includes a detection switch 18 that is attached to the fixed support 13 with a fastening member 17.

Now, the fixed body 15 will be described in detail with reference to FIGS. 2, 4 and 5. As shown in FIG. 5, the stationary body 15 has a contact piece 15a on the side of the movable body 16 that rises on one side by a height h, and a gap between the movable body 16 and the fixed support body 13. It is provided with a fixed piece 15b to be fitted, a long hole 15c through which the fastening member (bolt) 14 penetrates, and a support piece 15d for keeping the lower side of the movable body 16 and the gap g, and the wrap amount l, which is movable in the direction of arrow B. The body 16 is inserted from both sides and incorporated. The movable body 16
The spring plate 16b is deformed in the backward direction when an external force (such as the entry of the hand of an infant into the safety device 10) is actuated on the front surface portion 16a thereof as indicated by an arrow B. At this time, the detection switch 1
8 is a mechanism including an engaging portion 16c for activating the detection head 18a. For example, if a cleaning worker who was cleaning the floor near the entrance / exit 2 accidentally generates a strong external force in the direction of arrow B, The movable body 16 comes into contact with the fixed body 15 at the lower side (closes the gap g), and at this time, the engaging portion 16c and the detection head 18
The engagement of "a" (engagement height H) does not come off.
Therefore, the conventional problems are eliminated.

[0010]

According to the present invention, when a strong impact force is applied to a safety device, a function of the safety device is not impaired, and a highly safe passenger conveyor capable of holding its role at all times is obtained. You can

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a safety device used in the present invention.

FIG. 2 is a partial cross-sectional view showing the safety device of FIG.

FIG. 3 is a partial cross-sectional view showing how the safety device of FIG. 1 is attached to an escalator.

FIG. 4 is a side view taken along the line AA of FIG.

FIG. 5 is a perspective view of a single main component of the present invention.

[Explanation of symbols] 15 ... Fixed body, 16 ... Movable body, 18 ... Detection switch, 1
9 ... Protective body.

Claims (2)

[Claims] 1. A protective body and a movable body provided at an entrance to the inside of a balustrade where a circulating moving handrail enters, and when the movable body is displaced in the traveling direction of the moving handrail, it is stopped. In the passenger conveyor having means, when a strong impact force is applied to the front of the movable body, fixed bodies that suppress the displacement amount of the movable body are provided on both sides of the movable body, and the movable body is movable by the fixed body. A safety device for a passenger conveyor, characterized in that it holds the body in a stationary position. 2. The safety device for a passenger conveyor according to claim 1, wherein the fixed body is fastened together with the movable body via bolts.