JPS6141839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for a passenger conveyor provided at an entrance/exit.

First, a conventional safety device for a passenger conveyor will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is the main body of the passenger conveyor, 2 is its entrance, 3 is the floor of the entrance 2, 4 is a handrail that enters the main body 1 at the entrance 2, and 5 is the handrail and the floor 3. A space that is open on one side and is formed between
6 is a safety device placed in the space 5 and attached to the main body 1; 7 is a box that constitutes the main part of the safety device 6;
It is made of a flexible material such as rubber, and one side is the end surface 1 of the main body 1.
An entrance portion 7a of the movable handrail 4 is provided, which is fixed to the movable handrail 4 and protrudes into the space 5, and has a groove shape. Reference numeral 8 is a support arm provided inside the box body 7, with one side fixed to and protruding from the end surface 1a and the other side facing the back side of the projecting surface 7b of the box body 7; It is a detector consisting of a switch which is attached and has an actuator 9a disposed opposite to the back surface of the projecting surface 7b.

That is, the box body 7 of the safety device 6 is placed in the space 5 and is placed so as to surround the vicinity of the entrance part of the moving handrail 4, so that children and the like may become interested in the moving handrail 4 and move between the entrance part 7a and the moving handrail 4. If a hand is caught between the
It is deformed as shown by the chain line in the figure, which causes the detector 9 to operate and the passenger conveyor to suddenly stop. Furthermore, if an object such as a fallen infant enters the space 5, it is conceivable that the object will be pinched between the floor surface 3 and the moving handrail 4 due to the movement of the moving handrail 4 into the main body 1. However, even at this time, the projecting surface 7b is pressed by the object, and the detector 9 is thereby activated.
In this way, the safety device 6 is provided to prevent accidents at the entrance/exit 2 mainly caused by mischief or falls by young children. However, even if the passenger conveyor suddenly stops, the moving handrail 4 will still move due to inertia. On the other hand, since a fixed object such as the detector 9 is provided close to the back side of the projecting surface 7b of the box body 7, even if the box body 7 is pressed and the detector 9 is activated and the passenger conveyor suddenly stops,
Due to the inertial movement of the movable handrail 4, the infant's fingers, etc. may still be drawn in and collide with a fixed object such as the detector 9, or be caught between this and the movable handrail 4, causing injury. Ta.

The present invention aims to solve the above-mentioned drawbacks and to provide a safety device for a passenger conveyor that prevents accidents caused by children's mischief at entrances and exits.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5.

In the figure, the same reference numerals as those in Figures 1 and 2 indicate corresponding parts, and 10 is a holder made of a flexible material such as rubber;
The bottom surface of the groove shape is fixed to the floor surface 3 with adhesive or the like, and one end surface is the end surface 1 of the main body 1.
It is placed in contact with a. Reference numeral 7 is a flexible body made of a flexible material such as rubber, which is a hollow body and has a fluid such as air or liquid sealed inside, and is fitted into a groove of the holder 10 and attached thereto by frictional force. ing. 7
Barrier bodies c stand upright from the upper part of the flexible body 7 and are placed on both sides of the entry portion of the moving handrail 4, and are made of the same material as the flexible body 7. Reference numeral 11 denotes a tube that is provided at a portion facing the end surface 1a of the flexible body 7, is inserted into the main body 1, and forms a cavity that communicates with the inside of the flexible body 7; 12 is a counter-flexible body of the tube 11; 7 is the actuating part consisting of a diaphragm covered at the end, 9 is the main body 1
An actuator 9a fixed inside and facing the actuator 12
This is a detector consisting of a switch.

That is, the flexible body 7 is arranged in the space 5 from below the moving handrail 4 and is attached to the floor surface 3 via the holder 10. Then, the flexible body 7 is
When is pressed, the flexible body 7 is deformed together with the holder 10, as shown by chain lines in FIGS. As shown by the chain line in FIG. 5, it expands and presses the actuator 9a. This causes the detector 9 to operate and the passenger conveyor to suddenly stop.
Even if the handrail 4 continues to move due to inertia during this sudden stop, the child's fingers will not reach a fixed object such as the end surface 1a within a distance equivalent to the length of the flexible body 7 along the length of the handrail 4. Although he is caught between the flexible body 7 and the moving handrail 4, he is not injured. In this way, if an infant or the like presses the flexible body 7 at the entrance 2 due to mischief or carelessness, the detector 9
Even if the passenger conveyor is inertly operated when stopped, the flexible body 7 is further pressed and deformed, and the movement of the infant or the like due to inertial movement is not blocked by the fixed object.
Therefore, accidents caused by children's mischief at the entrance/exit 2 can be prevented with a high degree of safety.

In this embodiment, the flexible body 7 is attached via the holder 10, so it can be easily attached and detached, making it easy to maintain the detector 9 and replace the flexible body 7 when it is damaged. can. However, when the flexible body 7 is
The same main effect can be obtained even if it is directly fixed to. Furthermore, it is clear that the same effect can be obtained even if the actuating portion 12 is made of a bellows.

As explained above, the present invention arranges a flexible body filled with a fluid in the space formed by the moving handrail that enters the main body at the entrance and exit, and the floor surface, and when the flexible body is pressed, the fluid The detector is operated by the displacement of the flow. As a result, even if a child, etc. gets caught in the entrance of the moving handrail or between the moving handrail and the floor due to mischief or inadvertence at the entrance/exit, the passenger conveyor can be quickly moved by the pressure of the flexible body. The flexible body is further pressed and deformed by the movement of the child, etc. accompanying the inertial movement at this time, and the inertial movement of the child, etc. is not blocked by the fixed object, which prevents secondary accidents. This provides a safety device for passenger conveyors with a high degree of safety.

[Brief explanation of the drawing]

Figure 1 is a side view of the main part of a passenger conveyor entrance showing the safety device of a conventional passenger conveyor.
FIG. 3 is a longitudinal sectional view of the safety device shown in FIG.
FIG. 4 is a sectional view taken along the line -- in FIG. 3, and FIG. 5 is a longitudinal sectional view of the safety device shown in FIG. 3. 1... Main body, 2... Entrance/exit, 3... Floor surface, 4...
...Movable handrail, 5...Space, 6...Safety device, 7...
...flexible body, 9...detector, 12...actuating section. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A hollow flexible body that is arranged in a space formed between a moving handrail that enters the main body of the passenger conveyor and a floor surface of the passenger conveyor at the passenger conveyor entrance, and that has a fluid sealed inside. , an actuating part that is provided on the rear side of the flexible body in the entry direction and that is displaced when the fluid flows based on the deformation of the flexible body due to the pressing force caused by the entry of an object into the space; A safety device for a passenger conveyor, comprising: a detector installed at a position facing the actuating part and activated by a displacement operation of the actuating part.