JPH0624678A - Step device of escarator - Google Patents

Abstract

PURPOSE:To provide a step device of an escarator provided with an inclinable step which can be inclined by a simple mechanism while guiding a movable step plate without pushing out a riser. CONSTITUTION:At least one of a plurality of steps constituting an escarator is constituted as an inclinable step 2 consisting of an inclinable movable step plate 2a and a step body 2b for inclinably supporting the movable step plate 2a in the escarator. A cam plate 26 provided on the movable step plate 2a is guided by a cam roller 25 provided on the step body 2b to be slanted. In the slanting a wheel 22 shaft-supported in the lower portion of the movable step plate 2a is movably guided by a guide rail 23 provided on the step body 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step device for an escalator which is capable of transporting wheelchairs for general users as well as disabled persons.

[0002]

2. Description of the Related Art Conventionally, as a step device for an escalator,
It has been proposed that at least one step among a large number of steps forming an escalator is configured as a tiltable step including a tiltable movable step plate and a step main body that tiltably supports the movable step plate.

FIG. 5 shows an example of this step device. Reference numeral 1 is a step on which a wheelchair is mounted, and 2 is a tiltable step adjacent to the upper side of the wheelchair-installed step 1. It is composed of a movable step plate 2a that is inclined so that the wheels or the footless do not interfere with the step, and a step body 2b that tiltably supports the movable step plate 2a.

FIG. 6 is a diagram geometrically showing the dimensional relationship of the tiltable step 2 when the step plate is tilted. Reference numeral 3 denotes the step cleat upper surface and 4 denotes the riser outer surface. The riser outer surface 4 is located at a point 5 located approximately at the front end of the cleat upper surface 3.
Is formed by an arcuate surface with the center of curvature as the center of curvature, and the wheelchair-equipped steps 1 move up and down along the outer surface 4 of the riser.

Therefore, when the riser outer surface of the step plate projects from the riser outer surface of the step body 2b when the movable step plate 2a is tilted, the wheelchair-equipped step 1 and the riser interfere with each other to prevent the movable step plate 2a from moving up and down. Will be lost.

In order to solve such a problem, it is ideal that the tilt center of the movable tread 2a and the center of curvature 5 of the riser are aligned with each other, but in reality, the front end position of the upper surface 3 of the step cleat is located. It is impossible to attach a rotary shaft to the cleat, and the tilt center (below,
It is necessary to support the movable tread 2a with a special mechanism so that the virtual center of rotation comes to the point 5.

However, in the former method, the movable tread 2a
When the center of rotation of the movable tread 2a is brought to the position 6a shown in FIG. 4, the turning locus of the riser upper end 7 of the movable tread 2a becomes as shown by the curve 8, and it goes out from the riser outer surface 4 of the step body 2b to the outside of the step. Movement is impaired. On the other hand, in the latter method, the problem of interference between steps as described above does not occur, but a mechanism for forming a virtual center of rotation is required.

FIG. 7 shows an example of a method utilizing a virtual rotation center disclosed in Japanese Patent Publication No. 2-51836. In the figure, the movable tread 2a is supported by the step body 2b by four links 9a to 9d, and the links are rotatably connected by pins. Also, link pins 10a and 10
The line connecting b and the line connecting the link pins 10c and 10d are in the shape of "C", and the intersection formed by extending the two lines further coincides with the virtual rotation center 5'of the movable tread 2a. It is supposed to do. By supporting the movable tread 2a with such a link mechanism, the movable tread 2a is prevented from protruding from the outer surface of the riser.

[0009]

The method of forming the virtual rotation center 5'as described above is, in principle, a good method because the rotation center of the movable tread 2a coincides with the curvature center of the riser. Requires four links 9a to 9d, the structure is complicated, and precision failure is likely to occur due to play between the pins and the links. Further, since there is a front wheel shaft of the step at the mounting position of the links 9a to 9d and a large link cannot be mounted, there is a drawback that a link structure with good stability cannot be formed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a step device for an escalator having a tiltable step which can be tilted while guiding a movable tread with a simple mechanism so as to prevent the riser from protruding.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a movable step plate capable of inclining at least one step among a large number of steps constituting an escalator, and a tiltable support for the movable step plate. In an escalator configured as a freely tiltable step including a step body, a wheel pivotally supported on a lower portion of the movable step plate, a guide rail provided on the step body for movably guiding the wheel, and a step body on the step body. There is provided a step device for an escalator including a cam roller that is provided to guide the tilting movement of the movable tread plate, and a cam plate that is provided to the movable tread plate and guided by the cam roller.

[0012]

As described above, according to the present invention, at least one step among the many steps forming the escalator is a tiltable step including a movable step plate that can be tilted and a step body that tiltably supports the movable step plate. In the configured escalator, the cam plate provided on the movable tread is tilted so as to be guided by the cam roller provided on the step body, and at the time of this tilting, the wheels pivotally supported on the lower part of the movable tread are provided.
Guide rails are provided on the step body so that they can be guided and moved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be explained. The same parts as those of the conventional structure are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, the tiltable step 2 includes a shaft support member 20 provided below the movable step plate 2a and a shaft 21 supported by the shaft support member 20 as shown in FIG. 1 (a). , A wheel 22 provided on both ends of the shaft 21, a guide rail 23 provided on the step body 2b for guiding the wheel 22 in the left-right direction, and having both ends detachable, and an eye provided on the lower side of the movable tread 2a. The movable plate 2a is provided on the cover plate 24 and the plate body 2b.
And a cam plate 26 having a cam hole 26a which is provided in the movable step plate 2a and is guided by the cam roller 25. The step lower frames 2c provided at both ends of the step body 2b are provided with rear wheels. 2d is provided so as to circulate on a guide rail (not shown).

As shown in FIGS. 3 and 4, the cam roller 25 includes a roller 25a which is directly guided to the cam hole 26a, a shaft main body 25b which pivotally supports the roller 25a, and a step lower frame 2c which supports the shaft main body 25b. And a support 25c for supporting the
The support 25c is supported and fixed to the step lower frame 2c by bolts 25d. The diameter D2 of the roller 25a
Is smaller than the diameter D1 of the mounting hole of the cam roller 25 provided in the step lower frame 2c, and the cam roller 25 can be easily attached and detached from the outside of the step lower frame 2c.

With such a structure, when the freely tiltable step 2 is tilted in this embodiment, the cam hole 26a of the cam plate 26 provided on the movable step plate 2a is guided by the cam roller 25 provided on the step body 2b to move. The tread 2a can be smoothly tilted. Here, the cam hole 26a is the movable tread 2
The riser 2e of a is provided so as not to interfere with the wheelchair-equipped steps 1 when tilting. And at the same time the movable tread 2
As a is tilted, the wheels 22 move along the guide rails 23 and operate to obtain a desired center of rotation.

As described above, according to this embodiment, the movable tread 2a is
Is capable of tilting without interfering with the wheelchair-equipped steps 1, and does not require a complicated structure such as a link mechanism. Further, the guide rail 23 of the wheel 22 is configured so that the wheel 22 can be inserted and removed. Very easy to assemble. or,
Since the cam roller 25 can also be attached from the outside of the step lower frame 2c, the retrofitting and adjustment of the parts can be simplified.

[0018]

As described above, according to the present invention, it is possible to provide a step device for an escalator having a freely tiltable step which does not have a complicated structure and can be easily assembled.

[Brief description of drawings]

FIG. 1 is a sectional view showing the structure of a freely tiltable step according to the present invention.

FIG. 2 is a front view showing the structure of a freely tiltable step according to the present invention.

FIG. 3 is a front view showing the structure of a freely tiltable step according to the present invention.

FIG. 4 is a sectional view showing a configuration of a cam roller of a freely tiltable step according to the present invention.

FIG. 5 is an external perspective view showing a tilting operation of the present invention and a conventional tiltable step.

FIG. 6 is a geometric diagram for explaining the operation of a conventional tiltable step.

FIG. 7 is a cross-sectional view showing the structure of a conventional tiltable step.

[Explanation of symbols]

1 ... Wheelchair-mounted steps, 2 ... Freely tiltable steps, 2a ... Movable steps, 2b ... Step body, 22 ... Wheels, 23 ... Guide rails, 25
… Cam roller, 26… Cam plate.

Claims (3)

[Claims] 1. An escalator in which at least one step among a large number of steps constituting an escalator is configured as a freely tiltable step including a tiltable movable step plate and a step main body that tiltably supports the movable step plate, A wheel pivotally supported on the lower part of the movable tread, and a guide rail provided on the step body for movably guiding the wheel,
A step device for an escalator, comprising a cam roller provided on the step body for guiding tilting of the movable step plate, and a cam plate provided on the movable step plate and guided by the cam roller. 2. An escalator configured as a freely tiltable step, comprising a movable step plate capable of inclining at least one step among a large number of steps constituting an escalator, and a step main body supporting the movable step plate in a tiltable manner. Wheels pivotally supported on the lower part of the movable tread, and guide rails provided on the step body, movably guiding the wheels, and detachable from the wheels in at least one of the moving directions of the wheels, A step device for an escalator, comprising a cam roller provided on the step body for guiding tilting of the movable step plate, and a cam plate provided on the movable step plate and guided by the cam roller. 3. The step device for an escalator according to claim 1 or 2, wherein the cam plate is guided by the cam roller so that the movable step plate does not interfere with the step adjacent to the lower side. Step device for escalator.