JPH041972B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a safety device for an escalator,
In particular, it relates to an escalator safety device that detects deflection of a skirt guard and stops the operation.

[Conventional technology]

In recent years, as escalators have become more popular, the number of personal accidents has been increasing, and most of these accidents occur at locations where there is relative movement between a stationary part and a movable part. To prevent such accidents, for example, a micro switch is placed on the inside of the skirt guard installed on both sides of the running tread, and the deflection of the skirt guard is controlled by the micro switch. A safety device has been proposed that detects motion and stops escalator operation.

In addition, since such safety devices sensitively detect dangerous situations and ensure the safety of passengers, it is extremely important to adjust the operating point of the micro switch, that is, adjust the distance between the skirt guard and the micro switch detector. Moreover, high precision is required. For this reason, the above-mentioned interval can be adjusted by loosening and displacing the attachment part of the microswitch, or by attaching an adjustment mechanism to the skirt guard side.

[Problem to be solved by the invention]

According to the above-mentioned conventional configuration, the position of the micro switch must be adjusted by removing the skirt guard, and when the skirt guard is inserted after adjustment, the distance may fluctuate, which makes accurate adjustment impossible. There is. On the other hand, with the adjustment mechanism attached to the skirt guard side, there is a risk that the adjustment mechanism and the micro switch detector may be misaligned due to skirt guard assembly errors or adjustment mechanism installation errors, causing the micro switch to malfunction. There is.

SUMMARY OF THE INVENTION An object of the present invention is to provide an escalator safety device in which the precise operating point of a microswitch can be easily adjusted.

[Means to solve the problem]

In order to achieve the above object, the present invention attaches a wire to the detector of a microswitch to move the sensor forward and backward at the same time, engages a part of the wire to the microswitch so as to allow only the forward and backward movement, and A bolt is screwed in the same direction as the advancing and retracting direction at a position away from the detector, and the end thereof faces the skirt guard, and a small hole is provided in the front skirt guard facing the bolt end.

[Effect]

As mentioned above, since the adjustment mechanism is attached to the detector of the microswitch, there is no need to align the adjustment mechanism and the microswitch body, and the bolt can be rotated by inserting a wrench through the small hole in the skirt guard. , the operating point of the micro switch can be adjusted accurately without removing the skirt guard.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In Figure 1, escalator frame 1
A micro switch (not shown) fixed to the skirt guard 7 is located on the back side of the small hole b provided in the skirt guard 7 (see FIG. 2), and the endlessly connected treadle 5 is connected to the handrail 3 supported by the panel 2. It runs between the entrances and exits in synchronization with the train.

When a foreign object is caught between the footboard 5 and the skirt guard 7, the skirt guard 7 is bent to activate a micro switch and stop the operation of the escalator.

FIG. 2 is a perspective view of the vicinity of the small hole b in FIG. and detector 1
The other side of the micro switch 12a is brought into contact with the surface of the micro switch 12a. At this time, it is necessary to make contact so as to only allow the detector 12 to move forward and backward. As a result, the sensor 10 functions to stop the rotation of the detector 12 about its axis.

On the other hand, a U nut 13 is fixed at a position away from the detector 12 in the holder 10, and this U nut 13
A bolt 14 having a hexagonal hole is screwed into the detector 12 in the same direction as the advancing and retreating direction of the detector 12. A small hole b is provided in the skirt guard 7 where the tip of this bolt 14 faces, and by inserting the hexagonal wrench 15 into the hexagonal hole of the head of the bolt 14 through this small hole b, and then rotating the hexagonal wrench 15, the skirt guard 7 By changing the distance between the
Adjust the operating point.

According to this embodiment, the adjustment bolt 14 is provided so as to move forward and backward together with the detector 12, and this bolt 14 is provided so as to move forward and backward together with the detector 12.
4 is screwed in through the small hole b of the skirt guard 7, so there is no need to remove it from the skirt guard 7 or adjust the mounting position of the micro switch 12a to adjust the operating point of the micro switch 12a. The work is easy and accurate, and
Inconveniences caused by misalignment between the adjustment bolt 14 and the detector 12 of the microswitch 12a, or inconveniences caused by errors in assembling the skirt guard, etc., are eliminated.

It is also conceivable to interpose a different adjustment mechanism between the skirt guard and the microswitch detector. However, in this case, it is necessary to adjust the distance between the adjustment mechanism and the microswitch detector and between the adjustment mechanism and the skirt guard, which is not a good idea.

〔Effect of the invention〕

As explained above, according to the present invention, the operating point of the micro switch can be adjusted accurately, there is no need to center the operating point adjustment mechanism and the micro switch, and there is no problem in attaching and detaching the skirt guard. A device for adjusting the operating point of a micro switch in an escalator can be provided.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of an escalator showing an embodiment of the present invention, and FIG. 2 is a partially enlarged perspective view showing a safety device according to the present invention. 7...Skirt guard, 10...Hire, 12...
Hired child, 12a...Micro switch, 13...
U nut, 14...bolt, 15...hexagonal wrench, b...small hole.

Claims (1)

[Claims] 1 A micro switch fixed to the frame side is placed on the back side of the skirt guard provided facing the side of the tread, and the deflection of the skirt guard is detected by the movement of the detector of this micro switch back and forth, and the operation of the escalator is stopped. In the escalator safety device configured to allow the escalator to move forward and backward at the same time by attaching a wire to the detector, a part of the wire is engaged with the micro switch so as to permit only the advance and retreat; An escalator characterized in that a bolt is screwed in the same direction as the advance/retreat direction at a position away from the detector so that the end thereof faces the skirt guard, and a small hole is provided in the skirt guard facing the end of the bolt. safety equipment.