JPH0215904Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to steps of an escalator.

[Conventional technology]

Conventionally, as described in Japanese Utility Model Publication No. 48-8877, an escalator has been developed in which the riser is made of a synthetic resin molded product instead of a light metal die-cast molded product to achieve weight reduction and color change. The steps are known.

However, in conventional treads, the treads were made of metal for safety and strength reasons, so the synthetic resin riser and the synthetic resin safety display demacom of the adjacent step came into contact and generated static electricity. charged,
There was a problem in that passengers' clothes were drawn to the risers by this static electricity, and at the up and down bends of the escalator where the steps moved relative to each other, the clothes that were pulled were caught between the risers and the demacom. .

[Summary of the idea]

This idea solves the above-mentioned problem by forming a conductive film on the surface of at least one of the Demacom and Riser, which are made of molded synthetic resin, to prevent static electricity from being charged. The object of the present invention is to provide an escalator step having a riser etc. made of synthetic resin.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 shows a curved escalator with steps according to an embodiment of the invention. In Fig. 1, 1 is a main frame, and 2 is a conveyance path formed in the main frame 1, and this conveyance path 2 has an inclination angle on both sides above and below an intermediate constant slope part that is inclined at a constant angle in the vertical direction. The upper and lower horizontal parts are formed through the upper and lower curved parts.
Turning portions connecting the outbound path and the return path are formed at both ends of these upper and lower horizontal portions, and the horizontal projection plane of these transport paths as a whole is curved into a substantially semicircular shape. 3 is a railing installed on both sides of the conveyance path 2 along the longitudinal direction of the main frame 1; 4 is a railing erected on both sides of the conveyance path 2;
The steps are connected to each other so as to move the steps.

In step 4, as shown in FIGS. 2 to 4, a demacom 4b is fixed to one end of a tread plate 4a whose plane is substantially fan-shaped, and a riser 4 is fixed to the other end of the tread plate 4a.
c is placed. These treads 4a and riser 4
c are each fixed to the bracket 4l by tightening bolts. Inner and outer drive rollers 4e and 4f are attached to a step shaft 4d attached to the lower side of the bracket 4l, and a side roller 4g is attached via a frame 4h. Outer step chain mounting portions 4k, 4j are provided. Inner and outer guide rollers 4m, 4m are pivotally supported at the lower part of the other side of the bracket 4l. Note that 4n is a cleat of the riser 4c.

The step board 4a is a die-cast molded product of light metal such as aluminum alloy, the demacom 4b is a molded product of synthetic resin, the bracket 4l is a molded product of light metal such as aluminum alloy, and the step shaft 4d and step chains 4k and 4j are made of a molded product of light metal such as aluminum alloy. It is made of iron.

As shown in FIG. 5, the surface of the riser 4c is coated with a conductive material to form a conductive film 4p.

The steps of the embodiment configured as above are as follows:
Since the riser 4c is made of a synthetic resin molded product, the mold cost is lower than that of a die-cast molded product of light metal such as aluminum alloy, and it is especially useful for small-scale production such as curved escalator steps. It can be provided at low cost and is lighter than aluminum alloy, reducing the load on the electric motor that drives the steps.

The step of this embodiment has a riser 4c and a demacomb 4b of an adjacent step due to poor centering during installation or one-sided stretching of the step chain.
Since the riser 4c is made of a synthetic resin molded product with a conductive coating, static electricity is transferred from the riser 4c to the light metal bracket 4l, the iron step shaft 4d, and the step chains 4k and 4j.
Grounded through. Therefore, it is possible to prevent passengers' clothes from getting caught between the riser 4c and the demacom 4b or from being electrocuted due to static electricity.

As shown in FIG. 5, in this embodiment, a conductive film 4p is formed, and a conductive material such as carbon is not included in the synthetic resin constituting the riser 4c. 4
There is an advantage that the color of c can be freely selected, and in particular, the conductive coating 4p formed on the surface of the riser 4c has the unique effect of preventing deterioration of the physical properties of the synthetic resin constituting the riser 4c due to ultraviolet rays. is obtained.

In the above embodiment, the surface of the riser is made conductive, but the surface of the demacom 4b may be coated or painted with a conductive material to make the demacom 4b conductive. Furthermore, both the riser and the demacom may be electrically conductive.
Although the embodiment of the curved escalator has been described, this invention can also be applied to a normal straight escalator, and the same effects as those of the embodiment can be obtained in this case as well.

[Effect of idea]

As explained above, in the escalator step according to this invention, the demacom and the riser are molded from synthetic resin, and a conductive film is formed on the surface of at least one of the demacom and the riser, so the riser is made of synthetic resin material. Without compromising the reduction in manufacturing costs and weight reduction due to molding,
It is a riser that attracts the attention of passengers because it can prevent accidents such as passengers' clothes getting caught due to static electricity caused by contact between the riser and the demacom, and because it has a conductive coating formed on the surface. Not only is it possible to freely select the color of the demacom, but also the coating can provide remarkable effects such as preventing deterioration of the synthetic resin material from ultraviolet rays and the like.

[Brief explanation of drawings]

Fig. 1 is a front view of a curved escalator equipped with a step according to an embodiment of this invention, Fig. 2 is a side sectional view of the step seen from the - line in Fig. 1, and Fig. 3 is an embodiment of this invention. FIG. 4 is a front view of the same, and FIG. 5 is a partially enlarged sectional view showing the riser of the step according to an embodiment of this invention. 4...Step, 4a...Treadboard, 4b...Demacom, 4c...Riser, 4l...Bracket, 4
n... Cleat, 4p... Conductive film. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] An escalator step characterized in that a demacom and a riser fixed to an end of a tread are molded from synthetic resin, and the surface of at least one of the demacom and riser is coated with a conductive material to form a conductive film. .