JPS63300092A - Safety device for escalator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a safety device for escalator entrances and exits.

(Prior art) - As shown in Fig. 4, an escalator has a plurality of moving steps 1, handrails 2 provided on the left and right sides of the steps, and moving handrails 3 that move on the handrails 2 in synchronization with the steps 1. , a drive device 4 for driving these, and boarders 5 at the four entrances and exits on the upper and lower floors flush with the floor of the building, all of which are supported by a truss 6.

As shown in FIGS. 5 and 6, the board 5 has a beam 9 whose front end engages with the cleat 8 of the step 1 (a plurality of combs 7 having backs are fixed to the truss across the width of the step). This comb 7 is used to remove shoes when a passenger accidentally gets shoes caught between the comb 7 and the cleat 8, or when a foreign object gets stuck in the groove of the cleat 8. The comb is made of plastic to remove the foreign object.However, if the foreign object gets stuck and cannot be removed, the tooth of the comb that corresponds to the foreign object will break and the foreign object will be removed. If an external force of this magnitude is applied, it will break, ensuring the safety of passengers and alerting staff.

(Problem to be Solved by the Invention) However, with only the above-mentioned crosspiece, even if only the tip F of the tooth is broken for some reason, or a crack occurs in the root G of the tooth, the comb will not be able to pinch a foreign object as it is. It is also conceivable that the escalator will continue to run without stopping and a foreign object will collide with the beam 9.

In such cases, it may cause damage to the escalator equipment,
There is also a possibility that the passenger's toes may be drawn between the beam 9 and the cleat 8. In other words, it is conceivable that the removal of foreign matter may not be successful due to damage to the comb alone, so the aim is to prevent such defects.

[Structure of the invention] (Means for solving the problems and their effects) On the back side of the above-mentioned comb, for example, E D
A photocoupler consisting of a pair of photodiodes and a photodiode is provided, and the space between these couplers is blocked by a part of the comb. When the comb is damaged by a foreign object, the part of the comb that was blocking the space between the couplers due to the damage is removed. When the part is removed, the photocoupler is activated to notify that the comb is damaged.

(Example> The present invention will be explained with reference to FIGS. 1 to 3.

- Notch 10 on the back side of each comb 7 where it overlaps with the beam 9
will be established. The cutoff 10 has an elongated groove in the width direction of the step, and a light-shielding wall 11 having a height slightly protruding from the back surface of the comb is attached to the center of the groove.

This means that when an external force is applied to the tip of the comb 7 due to a foreign object, the mechanical strength of each part of the comb 7 is determined to be a specific location (i.e., the notch 10), and the part is not damaged. This is to keep the state as constant as possible.

A recess 12 is provided in the beam 9 corresponding to the light-shielding wall 11 of the opening 10 of this com, and a photocoupler 13 is attached here to sandwich the light-shielding wall 11.

In this way, a photocoupler is attached to each notch 10 of each comb 7, and an electrical connection is made so that this signal can be inputted to the electrical control circuit of the escalator.

With this configuration, if a passenger accidentally gets his or her footwear caught between the comb 7 and the cleat 8, or when the cleat 8
If a foreign object gets stuck in the groove of the comb 7 and is not removed, the comb 7 will break and its tip will be lost.
/Ara 13 is activated and detects damage to the com. In response to this signal, the escalator can be stopped or other necessary measures can be taken.

[Effects of the Invention] Since the combination of the notch provided in the comb and the photocoupler accurately detects breakage of the comb, it is possible to prevent the spread of accidents and improve the safety of the escalator.

[Brief explanation of drawings]

Fig. 1 is a partial plan view of the entrance/exit according to the present invention, and is a view corresponding to Fig. 5, Fig. 2 is a sectional view taken along the line ■ - ■ in Fig. 1, and Fig. 3 is a sectional view taken along the line - ■ in Fig. 2. Figure 4 is a schematic diagram of the escalator, Figure 5 is a plan view of the conventional boarding and boarding board, and Figure 6 is a cross-sectional view taken along the line ■ to ■ in Figure 1. 6

Claims (1)

[Claims] At the entrance of an escalator, which has a board and a plurality of combs for combing the step cleats at the front end of the board on the beam,
In the step width direction of the part that contacts the beam on the back side of each comb above,
A safety device for an escalator, characterized in that an elongated groove having a light-shielding wall is provided in the center, a recess is provided on the beam side corresponding to the light-shielding wall, and a photocoupler is provided in the groove with the light-shielding wall sandwiched therebetween.