JPH0720834B2 - Escalator platform - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an escalator, and more particularly to a structure for ensuring the safety of a boarding / alighting place.

[Technical Background of the Invention and Problems Thereof] Generally, an escalator is provided between the boarding points 1 and 1 provided on the upper and lower floors as shown in FIGS. 5 and 6 (however, only the upper floor is shown in the same figure). ), And a moving handrail 4 that travels on the balustrade 3 in synchronization with the step 2, and is a device for transporting passengers in the vertical direction. In order to confirm the safety of passengers' feet when getting on and off, a comb 6 that engages with a step cleat 5 mounted on the surface of the step 2 with a slight gap and scoops up the passenger's foot is provided on the boarding board 7 of the boarding board 7. Installed on. A plurality of combs 6 made of a synthetic resin material are arranged in parallel and attached to the boarding / alighting plate 7. Normally, passengers are getting on and off across the Com6. The boarding / alighting plate 7 is attached to the beam 8 of the building, and the steps 2
The moving handrail 4 is driven by the drive device 9.

By the way, when a passenger rides from the escalator, the footwear may be caught in a slight gap between the step 2 and the comb 6 due to carelessness. Therefore, for safety, the comb 6 is broken to prevent an accident due to the pinching.

Further, in order to prevent the passenger from tripping over, the comb 6 has a thick end portion having an angle of 30 to 50 °, and the root portion 10 is formed when the footwear is sandwiched as described above. It is made thin so that it breaks at the part.

As is well known, molded products of synthetic resin materials are liable to have internal defects such as voids, sink marks or cracks in a portion with a large thickness change or a thick portion (when the thickness is 6 mm or more). It reduces the strength of the molded product and causes breakage. Therefore, even if an attempt is made to break the comb 6 at the root portion 10 for safety at a predetermined time, the break position is not constant due to this internal defect, and the broken pieces are sharp and sharp like a blade or small. It may be scattered as a fragment and impair safety.

On the other hand, when the sand grains are caught in the groove of the step cleat 5, the comb 6 must be broken by the sand grains, so the comb 6 is provided in parallel with the bottom surface 11a of the tooth 11 as shown in FIG. It is designed to break from the base portion 11b. Furthermore, this base 11b has an external force suitable for the comb 6 (currently about 500 kg.
Since it is designed to break when f) acts, if this part is deleted, it will break with a small external force and it will not be suitable for practical use.

[Object of the Invention] The present invention has been made in view of the above circumstances, and provides an escalator boarding / alighting field in which safety is not deteriorated when an external force acts on a comb to break the comb. The purpose is to

[Summary of the Invention] The present invention forms a notch at the root of a tooth of a comb in a landing area of an escalator in which a comb having teeth that engage with a step cleat is mounted on a boarding plate arranged on each of upper and lower floors. However, the occurrence of internal defects at the time of comb molding is eliminated, and the fracture position is kept constant so that an irregularly shaped fractured portion is not formed, thereby improving safety.

[Embodiment of the Invention] An embodiment of an escalator boarding / alighting apparatus of the present invention will be described below with reference to the drawings. The same parts as those in FIGS. 5, 6 and 7 are designated by the same reference numerals, and the description thereof will be omitted. In FIGS. 1 and 2, the plurality of combs 15 are beams 8.
Mounted in parallel with. In this comb 15, a notch 19 is formed in a root portion 18 of a tooth 17 as shown by a dotted line in FIG. Alternatively, the base 17b of the tooth 17 is parallel to the bottom surface 17a of the tooth 17.
(Root) is provided, and an appropriate external force (currently
It is designed to break from this base 17b when 500 kgf) acts. The notch 19 is formed in a substantially triangular cross-section so that the base 17b is left in a portion between the tooth 17 and the tooth 17 which are adjacent to each other on the inner side of the root portion 18, and the thick portion of the tip of the comb 15 is formed. Is to reduce. Therefore, the teeth
If the width of the one formed between 17 and 17 is W, the width of the one formed outside the outermost tooth 17 is W / 2.

When manufacturing the comb 15 provided with the cutout portion 19, a convex portion is added to a portion corresponding to the cutout portion 19 in the conventional molding die,
Since the injection molding method similar to the conventional one may be used, there is no difficulty as compared with the conventional one.

There is also a method of forming the cutout portion 19 by machining, but this is not appropriate from the viewpoint of removing internal defects, and the tips of the teeth 17 and other portions are molded separately, and these are integrated. There is also an assembly method, but it is not suitable in terms of productivity.

The comb 15 and the conventional comb 6 configured as described above are attached to the jig 20 as shown in FIG. 4, and an external force is applied from the direction of the arrow 21 to perform a mechanical strength test, and the results of Table 1 are obtained. It was

From this table, the comb 15 of the present invention has a larger breaking load than the conventional comb 6 and hardly scatters.
The breaking positions were all fixed at the root shown by a in the figure. This is because the provision of the notch 19 makes the wall thickness uniform and the cooling at the time of molding becomes uniform.
It is considered that this is because the internal defect that occurred in the

On the other hand, in the conventional comb 6, the breaking load is small and the breaking position is not constant because there are b positions shown in FIG.

Therefore, the comb 15 breaks at a predetermined position without causing an internal defect, so that the breaking portion does not become irregular and does not have a sharp pointed shape, so that safety can be improved.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, an abnormality occurs when a passenger mistakenly inserts footwear or a foreign matter such as sand is inserted into a step cleat. sometimes,
Since the comb is broken at a predetermined position and the broken portion does not have a sharp pointed shape, safety can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a boarding / alighting place of an escalator according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1 in the direction of the arrow, and FIG. FIG. 4 is a perspective view showing a comb of one embodiment, FIG. 4 is an explanatory view showing a test method related to one embodiment of the present invention, and FIG. 5 is a perspective view showing a conventional escalator by cutting an upper portion thereof, FIG. Is a cross-sectional view as seen in the direction of the arrow A in FIG. 5, and FIG. 7 is a perspective view showing a part of a comb of a conventional escalator. 1 ... Boarding place 2 ... Crossing 4 ... Step cleat 7 ... Boarding board 15 ... Com 17 ... Teeth

Claims (1)

[Claims] 1. In an escalator entry / exit field in which a comb provided with teeth engaging with a step cleat is mounted on the boarding / alighting plates arranged on the upper and lower floors, the bottom of the teeth is substantially formed at the root of the teeth of the comb. A escalator boarding / alighting field characterized in that a base portion serving as a root of the tooth is provided in parallel, and a cutout portion having a substantially triangular cross section is formed at the base portion located between the teeth to leave the base portion. .