JPS638701Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a handrail guide rail for an escalator that slides and guides a moving handrail of an escalator.

[Technical background of the invention and its problems]

Generally, as shown in Fig. 1, an escalator consists of steps 1 that move between the inclined upper and lower entrances A and B, and a parapet deck 4 between the upper and lower neutral sections 2 and 3.
The movable handrail 5 that moves along the upper end of the second
Passengers are transported by synchronized movement by a drive device consisting of a drive motor 6, step drive wheels 7, and handrail drive pressure rollers 8 as shown in the figure.

Conventionally, when installing the above-mentioned movable handrail 5 so as to be able to freely slide along the upper end of the balustrade deck 6, a metal handrail having a cross-sectional shape with a central part recessed along the longitudinal direction as shown in Fig. 3 has been used. Using the guide rail 41,
As shown in FIGS. 4 and 5, this metal guide rail 41 is fixed along the upper end of the balustrade deck 4 with bolts 42 and nuts 43, and the movable handrail 5 is engaged with this guide rail 41. At the same time, the sliding surface with which the moving handrail 5 comes into contact is formed into a smooth surface to provide sliding guidance.

In order to drive such a moving handrail, normally a driving force greater than the running resistance of the moving handrail is applied to ensure smooth running, but it is necessary to reduce this driving force. In other words, reducing the running resistance of moving handrails is an important issue in terms of saving energy and extending the life of moving handrails.

However, since the above-mentioned conventional guide rail is made of extruded metal material, the frictional force between it and the contact surface of the moving handrail is large, which increases the running resistance of the moving handrail and reduces the energy saving for its drive. Not only is it difficult to use handrails, but the lifespan of mobile handrails is short, they require large tension against the driving force and a complicated cross-sectional shape, and they are extremely heavy and difficult to install on the parapet deck. There were various drawbacks such as:

Recently, in view of the above-mentioned drawbacks of the metal guide rail, a guide rail 9 made of extruded synthetic resin, especially thermoplastic synthetic resin, which is lightweight and easy to install, as shown in FIG. 6, has been used. However, even with this type, the surface portion 9a that the moving handrail comes into contact with is a smooth surface, so the coefficient of friction between it and the moving handrail is high, making it insufficient for energy saving. It was hot.

[Purpose of invention]

The present invention was developed under the above circumstances, and its purpose is to provide a guide rail made of synthetic resin that can reduce the coefficient of friction between the guide rail and the moving handrail.

[Summary of the idea]

In order to achieve the above purpose, the present invention:
The guide rail that slides and guides the moving handrail is made of a synthetic resin material, and the surface that the moving handrail comes in contact with has many grooves along the traveling direction of the moving handrail, thereby reducing the coefficient of friction between the handrail and the moving handrail. It is characterized by reducing the amount of

[Example of idea]

Hereinafter, the present invention will be explained with reference to an embodiment shown in FIGS. 7 to 9.

As shown in FIG. 7, the reference numeral 10 in the figure is a guide rail for slidingly guiding a movable handrail attached to the upper end of the escalator balustrade deck according to the present invention. This guide rail 10 is formed of an extruded material made of a thermoplastic synthetic resin material such as nylon, and has a cross-sectional shape in which the central part of the upper surface is recessed along the longitudinal direction (travel direction of the moving handrail). Both left and right surface portions 10a, 1 in contact with the movable handrail in the range indicated by the broken line
0a has a large number of grooves 11 along the running direction of the moving handrail, which is also the extrusion direction during extrusion processing.
is formed. These grooves 11... are the ninth
As shown in the enlarged part of the figure, it has a wavy cross-section and is formed with a desired fine pitch p, and its depth d is approximately 1/2 of the pitch p.
Moreover, the ridged portions 11a on both sides of the groove are rounded to have roundness.

Therefore, according to the configuration of the guide rail 10 according to the present invention described above, since a large number of grooves 11 along the running direction of the moving handrail are formed on the surface portions 10a, 10a with which the moving handrail comes into contact, the macroscopic From a physical perspective, the contact area between the moving handrail and the guide rail can be reduced, thereby increasing the apparent contact surface pressure, so the coefficient of kinetic friction between the moving handrail and the guide rail can be decreases.

That is, according to Coulomb's law regarding friction, it is generally believed that the coefficient of friction is constant regardless of the normal pressure between friction surfaces, but recent experimental results for a wide range of surface pressures show that, for example, in steel It has been found that the coefficient of kinetic friction μ between the ball and various synthetic resins decreases as the surface pressure p increases, and the relationship approximately holds: μ∝P ^- 〓 (α: constant). By forming a large number of grooves on the contact surface of the guide rail, it is possible to reduce the coefficient of friction between the guide rail and the moving handrail.

[Effect of idea]

As explained above, in the present invention, the guide rail is made of a synthetic resin material, and a large number of grooves are formed along the traveling direction of the moving handrail on the surface that the moving handrail comes into contact with. The coefficient of dynamic friction of the moving handrail can be reduced, which reduces the running resistance of the moving handrail, so the driving force for driving the moving handrail can be reduced, making it possible to save energy. Since the maximum tension acting on the movable handrail is also reduced, the cross-sectional structure of the movable handrail can be simplified, resulting in excellent practical effects.

[Brief explanation of the drawing]

Figure 1 is a schematic explanatory diagram of an escalator, Figure 2 is a schematic enlarged diagram of the main parts showing the drive system, and Figure 3 is the main part of a parapet deck that slides and guides a conventional handrail along the line in Figure 1. 4 is a sectional view taken along the line shown in FIG. 3, FIGS. 5 and 6 are partial perspective views showing two examples of conventional guide rails, and FIG. 7 is a handrail according to the present invention. FIG. 8 is a partial perspective view showing an embodiment of the guide rail, FIG. 8 is a sectional view taken along the line shown in FIG. 7, and FIG. 9 is an enlarged sectional view of the surface thereof. DESCRIPTION OF SYMBOLS 10... Guide rail, 10a... Contact surface portion of moving handrail, 11... Groove, 11a... Mountain portion.

Claims (1)

[Claims for Utility Model Registration] (1) In an escalator handrail guide rail made of a synthetic resin material that slides and guides a movable handrail, the surface with which the movable handrail comes into contact has a number of grooves each extending in the running direction of the movable handrail. A handrail guide rail for an escalator, characterized in that the handrail guide rail is formed with a desired spacing. (2) The escalator according to claim 1 of the utility model registration, characterized in that the grooves have a fine pitch and a depth of about half the pitch, and the peaks on both sides of the grooves are rounded. Handrail guide rail.