JPH0240063Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for detecting foreign matter caught in a cleat groove of a step constituting a passenger conveyor.

[Background of the idea]

As is well known, the passenger conveyor entrance has a structure in which a large number of steps 1 are successively separated from a comb plate 4 attached to a comb plate 5, as shown in FIG. Therefore, there are cases where foreign matter gets stuck in the lower part of the comb plate 4. Conventionally, as a device for detecting this foreign matter, for example, Japanese Utility Model Publication No. 41-8349,
As described in No. 46-28374, No. 49-31348, and No. 55-20712, a sensor for detecting foreign matter is attached to the comb plate 4, and when a foreign matter is detected, the passenger conveyor is stopped. Efforts have been made to Therefore, a special sensor is required, and this sensor is always attached to the comb plate 4 during operation. As a result, the passenger conveyor stops each time a foreign object is detected in the cleat groove, reducing operating time and reducing service. In addition, since the comb plate is actually used by passengers, the comb plate can only be moved very slightly, and the support structure for the comb plate is not designed to do so, so it can detect the slightest movement of the comb plate. In order to do this, a mechanism that magnifies the movement of the comb plate is essential, and the configuration becomes extremely complicated.

[Purpose of invention]

An object of the present invention is to provide a device with a simple configuration that allows foreign objects caught in the cleat groove to be easily detected.

[Summary of the idea]

A feature of the present invention is that a long neck bolt is screwed into the screw hole after removing the screw for fixing the comb plate, and a spring that applies pressing force to the comb plate is inserted between the nut of the long neck bolt and the comb plate. and the spring is longer than the thickness of the comb plate.

As mentioned above, since the comb plate is pressed so that it can float freely by a spring that is longer than the thickness of the comb plate, the comb plate can easily move upward, and when it comes into contact with a foreign object, the comb plate moves instantly and quickly. This can be easily confirmed visually, and since only a spring longer than the thickness of the comb plate and a long-necked bolt to support it are used, the configuration is also very simple.

[Example of idea]

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

In FIG. 1, the comb plate 4 is attached by being pressed against the comb plate 5 by a long neck bolt 13, a mounting device 3 which is longer than the thickness of the comb plate 4, and includes a spring 6, a spring seat 7, a double nut 8, and a handle 9. It is being Reference numeral 12 indicates a foreign object inserted into the cleat groove 2.

FIG. 2 is a plan view of FIG. 1, and 10 is a countersunk screw for fixing the comb plate 4 to the comb plate 5. In such a configuration, the comb plate 4 portion having the missing comb teeth is removed at the entrance of the passenger conveyor, and a new comb plate 4 is floated on the comb plate 5 in its place by the mounting device 3 shown in FIG. Install freely. In this state, for example, the step 1 of the passenger conveyor is operated in the direction of exiting from the comb plate 4. At this time, if there is a foreign object 12 in the cleat groove,
This foreign material 12 pushes up the corresponding comb plate 4. Therefore, by observing the movement of the comb plate 4, the position where the foreign object 12 is inserted can be confirmed.

In addition, in the above-mentioned embodiment, the case where the detection is done visually is taken as an example, but it is also possible to install a micro switch or the like during the foreign object detection work to automatically detect that the comb plate 4 has lifted up, and to It is also effective to automatically stop the system, turn on a warning lamp, or sound a warning buzzer.

[Effect of idea]

As explained above, according to the present invention, foreign objects caught in the cleat groove can be easily detected despite the simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view of one embodiment of the cleat groove foreign object detection device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a schematic diagram of an entrance of a passenger conveyor. DESCRIPTION OF SYMBOLS 1... Step, 2... Cleat groove, 3... Mounting device, 4... Comb plate, 5... Comb plate, 6
...Spring, 12...Foreign object, 13...Long neck bolt.

Claims (1)

[Scope of utility model registration request] A number of steps having cleat grooves on the passenger loading surface and running in an endlessly connected manner, a comb plate provided at the entrance and exit, and fixed to the comb plate with screws so as to mesh with the cleat grooves. In the cleat groove foreign object detection device for a passenger conveyor equipped with arranged comb plates, a long neck bolt is screwed into the screw hole after removing the screw,
A spring that applies a pressing force to the comb plate is interposed between the nut of the long neck bolt and the comb plate, and the spring is longer than the thickness of the comb plate. A device for detecting foreign objects in the cleat groove of a passenger conveyor.