JPH06144766A - Safety device for boarding and alighting gate of man conveyor - Google Patents

Abstract

PURPOSE:To surely detect the deformation of a comb by means of a simple structure, prevent the whole of the comb from being damaged, and thereby enhance safety. CONSTITUTION:A wire rope 12 is stretched within the groove 11b of a comb 11 along the width direction of a step 1 in such a way as to be pulled out when the comb 11 is deformed, in addition, a safety switch 15 which is actuated when the wire rope is pulled out, is provided at one end section of the wire rope 12, so that a man conveyor is suspended in operation when the safety switch 15 is actuated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entrance / exit safety device for passenger conveyors such as escalators and moving walkways.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of an essential part of an example of a conventional passenger entrance / exit. In the figure, 1 is a step, 2 is a floor board provided at the entrance / exit, and 3 is a comb that is fixed to the entrance / exit adjacent to the floor board 2. The combs 3 are plural along the width direction of the step 1. It is lined up individually. 4 are skirt guards provided on both sides of the step 1 in the width direction.

FIG. 7 is a sectional view taken along line VII-VII in FIG. In the figure, 5 is a mounting beam for the floor plate 2, and 6 is a flat head screw for fixing the comb 3 to the mounting beam 5. Also, comb 3
Has a comb tooth portion 3a which meshes with the cleat 1a of step 1. Further, as the material of the comb 3, for example, a polycarbonate resin containing glass fiber or the like is used.

Usually, most passengers step up with their legs raised and step over the comb 3, but some passengers try to get down without raising their legs. Therefore, the comb 3 is engaged with the cleat 1a of step 1 with a sufficient depth of engagement 7 while keeping a slight gap in the width direction, thereby scooping up the passenger's foot, thereby ensuring the safety of the passenger's foot at the entrance / exit Have secured. However, shoes or the like may be caught in the slight gap between the step 1 and the comb 3, and in such a case, as shown in FIG. The rest is deformed upward.

[0005]

In the conventional entrance / exit safety device configured as described above, when the deformation of the comb 3 progresses further from the state shown in FIG. 8, the comb 3 comes from the vicinity of the fixed portion of the comb 3.
There is a problem that the whole is cut off and the gap 9 between the upper surface of the cleat 1a in step 1 and the iron mounting beam 5 is exposed, which is very dangerous.

On the other hand, for example, Japanese Patent Laid-Open No. 63-272.
In Japanese Patent No. 772, a comb is provided with a through hole extending in the step width direction, a light emitting element and a light receiving element are arranged at both ends of the through hole, and an escalator is provided when a light beam from the light emitting element is blocked by deformation of the comb. An entrance / exit safety device for stopping the operation of the vehicle is shown. However, in the case of this product, it is difficult to provide a small-diameter elongated through-hole in a comb, which is a plastic molded product, and it is difficult to realize it because a large-sized photoelectric device is required to narrow the light beam to a small diameter. There was a problem.

Further, in Japanese Patent Laid-Open No. 63-300092, a recess is provided in a portion of the mounting beam facing the comb, and a photocoupler is provided in the recess so that the photocoupler operates when the comb is damaged. It is shown that the operation is stopped by doing so. However, in the case of this, there is a problem in that the tip portion of the mounting beam, which is most important in terms of rigidity, must be thinned, which is not practical.

Further, Japanese Utility Model Laid-Open No. 63-173176 discloses a switch provided between a mounting beam and a comb so that the switch is opened to stop the operation when the comb is deformed or cut. ing. However, this device has a problem that it is very dangerous because the terminals of the switch are exposed when the comb is broken.

Further, in Japanese Patent Laid-Open No. 1-288596, a gap is provided between the upper surface of the step and the boarding / alighting plate, and an optical means for detecting a foreign substance entering the gap and stopping the operation is opposed to the gap. The arrangement is shown. However, in this device, since the photoelectric device is provided immediately in front of the mounting beam, there is a problem that intruders such as shoes do not operate unless they reach this position and safety is not sufficient.

Further, in Japanese Patent Laid-Open No. 4-153195, a comb is provided with a through hole extending in the step width direction, a flexible tube is passed through the through hole, and a light emitting element and a light receiving element are provided at both ends of the tube. It is arranged to stop the operation of the escalator when the light beam from the light emitting element is blocked by the deformation of the tube. However, with this one, it is difficult to provide through holes in the comb, and
There is a problem that it takes time and effort to insert the tube into the through hole, and that the tube must be replaced every time the comb is replaced.

The present invention has been made to solve the above-mentioned problems, and it is possible to detect the deformation of a comb more reliably with a simple structure and to cut the entire comb. It is an object of the present invention to provide a passenger conveyor entrance / exit safety device that can prevent damage and thereby improve safety.

[0012]

According to a first aspect of the present invention, there is provided a passenger conveyor entrance / exit safety device in which a wire rope is stretched along the width direction of a step so that the comb is pulled by the comb when it is deformed. It is provided with a safety switch that detects the deformation of the comb by pulling the wire rope and stops the operation of the man conveyor.

In the passenger conveyor entrance / exit safety device according to a second aspect of the present invention, the wire rope is wound around a pulley in the middle of the path from the comb to the safety switch, and the direction of the path is bent.

[0014]

According to the first aspect of the invention, the deformation of the tip of the comb is detected by the wire rope, and the operation of the man conveyor is stopped to prevent the comb from being totally cut.

According to the second aspect of the invention, the safety switch can be installed at an arbitrary location by changing the direction of the wire rope by the pulley.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. 1 is a sectional view showing a part of an entrance / exit safety device for a passenger conveyor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG. The same or corresponding parts as those in FIG. 8 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 11 designates a comb which is fixed to the mounting beam 5 with countersunk screws 6 as in the conventional case and has a comb tooth portion 11a which meshes with the cleat 1a. A groove 11b as an engaging portion that opens rearward is formed in a portion facing the portion. 12 is groove 1
1b is a wire rope stretched along the width direction of the step 1, and the wire rope 12 has one end fixed to a fixing portion 13a of the man conveyor and the other end as shown in FIG. Is attached to the fixed portion 13b of the passenger conveyor via a spring 14.

Reference numeral 15 is a limit switch (micro switch) which is attached to the fixed portion 13b and operates by the displacement of the end of the wire rope 12,
The operation of the passenger conveyor is stopped by the operation of the limit switch 15.

Next, the operation will be described. FIG. 3 shows FIG.
Sectional view showing a state in which an accident in which the comb 11 of FIG.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. For example, when the comb tooth portion 11a of one of the plurality of combs 11 is damaged by the shoes of passengers and the comb 11 is deformed upward, the wire rope 12 is hooked in the groove 11b of the comb 11 and pulled. To be As a result, the end portion of the wire rope 12 on the side of the fixed portion 13b is opposed to the spring 14 in FIG.
2 is displaced in the direction of arrow A. In this way, when the end portion of the wire rope 12 is displaced by a predetermined amount or more, the limit switch 15 operates and the operation of the man conveyor is stopped.

According to such an entrance / exit safety device, the comb 1
Since the operation of the passenger conveyor is stopped at the stage when 1 is deformed, the comb 11 is not totally cut off, and the safety of passengers is more reliably ensured. Further, it is not necessary to provide the comb 11 with a small-diameter through hole, and the structure is simple. Furthermore, by adjusting the position of the limit switch 15 or the like, it is possible to easily adjust the amount of upward displacement of the comb 11 when the switch is activated, and when replacing the comb 11, it is not necessary to remove the wire rope 12. Easy to install and maintain.

Example 2. Next, FIG. 5 is a cross-sectional view of a passenger conveyor entrance / exit safety device according to an embodiment of the present invention. In the figure, reference numeral 16 denotes a pulley around which the wire rope 12 is attached and which is attached to the fixed portion 13b, and the wire extending direction of the wire rope 12 is bent by the pulley 16.

The entrance / exit safety device as described above is the first embodiment.
Although it operates in the same manner as the above, the limit switch 15 can be installed at an arbitrary position by bending the path of the wire rope 12 with the pulley 16. Normally, many parts such as an operation panel, an inlet safety device, and a rubber handrail on the return path are mounted inside the skirt guard 4 on the floor plate, so that it may be difficult to install the limit switch 15. According to the second embodiment, it is possible to easily install by selecting an appropriate position.

In the above embodiment, the groove 11 is used as the engaging portion.
Although b is shown, it is sufficient that the wire rope 12 can be pulled when the comb 11 is deformed, and for example, a protrusion or the like may be used.
Although one pulley 16 is provided in the second embodiment, the path of the wire rope 12 may be bent multiple times using a plurality of pulleys 16.

[0024]

As described above, in the passenger conveyor entrance / exit safety device according to the first aspect of the present invention, the wire rope is stretched along the width direction of the step so as to be pulled by the comb when the comb is deformed. Moreover, since a safety switch that detects the deformation of the comb by pulling the wire rope and stops the operation of the conveyor is provided, it is possible to detect the deformation of the comb more reliably with a simple structure, and It is possible to prevent breakage, which can avoid or minimize injury to passengers and improve safety.

In the passenger conveyor entrance / exit safety device according to the second aspect of the present invention, the wire rope is wound around the pulley in the middle of the path from the comb to the safety switch and the direction of the path is bent. In addition to the same effect as the invention of Item 1, the safety switch can be installed at any position,
The effect is that it can be easily applied to all passenger conveyors.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a part of a passenger entrance / exit safety device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

3 is a cross-sectional view showing a state in which an accident has occurred in which the comb 11 of FIG. 1 is cut off.

4 is a sectional view taken along the line IV-IV of FIG.

FIG. 5 is a sectional view of an entrance / exit safety device for a passenger conveyor according to an embodiment of the present invention.

FIG. 6 is a perspective view of an essential part showing an example of an entrance / exit of a conventional passenger conveyor.

7 is a sectional view taken along the line VII-VII in FIG.

8 is a cross-sectional view showing a state in which an accident has occurred in which the comb of FIG. 7 is cut off.

[Explanation of symbols]

 1 step 1a Cleat 11 Comb 11b Groove (engagement part) 12 Wire rope 15 Limit switch (safety switch) 16 Pulley

Claims (2)

[Claims] 1. A comb provided at an entrance / exit of a man conveyor, engaged with a cleat of a step, stretched along a width direction of the step, and engaged with the comb so as to be pulled when the comb is deformed. A wire rope engaged in the joint portion, and a safety switch for detecting deformation of the comb by pulling the wire rope, and a safety switch for stopping the operation of the man conveyer, characterized by: Mouth safety device. 2. The passenger entrance / exit safety device according to claim 1, wherein the wire rope is wound around the pulley in the middle of the path from the comb to the safety switch, and the path is bent.