JP3042934B2 - Escalator step device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator stepping device capable of transporting wheelchairs for disabled persons and the like in addition to general users.

[0002]

2. Description of the Related Art Conventionally, as a step device of an escalator,
There has been proposed an escalator in which at least one of a large number of steps is configured as a tiltable free step including a movable step board that can be tilted and a step body that supports the movable step board in a tiltable manner.

FIG. 5 shows an example of this stepping device. Reference numeral 1 denotes a step on which a wheelchair is mounted. Reference numeral 2 denotes a tiltable step adjacent to the upper side of the wheelchair mounting step 1. The vehicle includes a movable step board 2a which is inclined so that wheels or a footless does not interfere with the steps, and a step main body 2b which supports the movable step board 2a in a tiltable manner.

FIG. 6 is a diagram geometrically showing a dimensional relationship when the step 2 of the tiltable step 2 is inclined, wherein 3 is an upper surface of a step cleat, and 4 is an outer surface of a riser. The outer surface 4 of the riser is located at a point 5 substantially at the front end of the upper surface 3 of the cleat.
Is formed as an arc surface having a center of curvature, and the wheelchair-mounted steps 1 move up and down while moving back and forth along the riser outer surface 4.

Accordingly, if the riser outer surface of the stepping plate protrudes from the riser outer surface of the step body 2b when the movable stepping plate 2a is inclined, the wheelchair mounting step 1 and the riser interfere with each other, so that the vertical movement of the movable stepping plate 2a is hindered. Would be.

In order to solve such a problem, it is ideal that the center of tilt of the movable tread 2a and the center of curvature 5 of the riser coincide with each other. It is impossible to attach a rotating shaft or the like to the
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 rotation center of bringing the position of the point 6 shown in FIG. 6, the rotation locus of the riser upper end 7 of the movable step plate 2a is as shown by curve 8, out into the outer Ri by riser outside surface of the step body 2b As a result, an obstacle occurs in the step tilting operation. On the other hand, in the latter method, the problem of mutual interference between steps does not occur, but a mechanism for creating a virtual center of rotation is required.

FIG. 7 shows an example of a system using a virtual rotation center disclosed in Japanese Patent Publication No. 2-51836. In the figure, a movable step board 2a is supported by a step body 2b by four links 9a to 9d, and the links are rotatably connected by pins. Also, the 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 coincides with the virtual rotation center 5 'of the movable tread 2a. It is supposed to. 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 center of rotation 5 'as described above is a good method in principle because the center of rotation of the movable tread plate 2a coincides with the center of curvature of the riser. Requires four links 9a to 9d, the structure is complicated, and the precision is likely to be poor due to the play between the pins and the links. In addition, there is a disadvantage that a link configuration with good stability cannot be provided because a front wheel axle of a step is provided at a mounting position of the links 9a to 9d and a large link cannot be mounted.

SUMMARY OF THE INVENTION An object of the present invention is to provide an escalator step device provided with a tiltable step capable of guiding a movable step plate with a simple mechanism so that a riser does not protrude.

According to the present invention, there is provided an inclined escalator comprising at least one of a plurality of steps constituting an escalator, a movable step capable of inclining, and a step main body for supporting the movable step in a tiltable manner. In an escalator configured as a free step, a wheel pivotally supported at a lower portion of the movable step plate, and provided on the step main body, guides and supports the wheel movably, and reduces a moving direction of the wheel.
A guide rail is also configured to be inserted and removed from one and the previous
A cam plate provided on both sides in the width direction of serial movable tread plate, before detachably attached from the outer side of the tread stage body on the footstep body
An escalator step device including a cam roller which engages with a cam plate of the movable step board to guide the movable step board to tilt is provided.

[0012]

According to the present invention constructed as described above , at least one of a large number of steps constituting the escalator is constituted by a movable stepping plate which can be inclined and a step main body which supports the movable stepping plate in a tiltable manner. In the escalator configured as a tiltable free step, a cam plate provided on the movable step plate is tilted so as to be guided by a cam roller provided on the step body, and a wheel pivotally supported at a lower portion of the movable step plate at the time of this tilting, The movable stepboard can be moved by being guided by the guide rail provided on the step body.
Can be tilted. And in this case,
Wheels should be mounted on the step body from at least one side in the direction of travel.
And the cam rollers are located on the outside of the side of the step body.
Assembling by engaging with the movable tread cam plate
Can be.

[0013]

1 to 4 show an embodiment of the present invention.
This will be described with reference to FIG. The same parts as those of the conventional configuration are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, as shown in FIGS. 1A and 1B and FIG. 2, the movable step 2a is
It has a main body 2b. Below the front side of the movable tread 2a
Is provided with wheels 22. The wheel 22 is a movable tread 2a
Are provided on the lower surface of the movable tread plate 2a on both sides in the width direction.
Provided at both ends of a shaft 21 that is supported by a supporting member 20.
I have. On the lower side of the rear side of the movable tread 2a, on both sides in the width direction
A cam plate 26 is provided. This cam plate 26 will be described later.
The arc-shaped cam hole 26a engaging with the cam roller 25
It is formed to extend downward. On the step body 2b
Are gears for guiding and supporting the wheels 22 provided on the movable tread 2a.
An id rail 23 is provided. Guide rail 23
Each has a U-shaped cross section so that the wheel 22 can be inserted and removed.
The moving direction (front-back direction) is released and the step body
Steps provided to extend downward on both sides in the width direction of 2b
It is attached so as to face the lower frame 2c. Ma
The cam hole 2 provided in the movable step board 2a is formed in the step body 2b.
6a is provided with a cam roller 25 which is engaged with the cam roller 25a.
The cam roller 25 is detachably provided on the step lower frame 2c.
I have. A rear wheel 2d is provided on the step lower frame 2c.
It circulates on each guide rail together with the front wheels not shown . In addition, 24 is the movable tread 2a.
This is a blind plate provided on the lower side.

As shown in FIGS. 3 and 4, the cam roller 25 includes a roller 25a guided directly into a cam hole 26a, a shaft body 25b for supporting the roller 25a, and a step lower frame 2c for supporting the shaft 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 this structure, when the step 2 is tilted in the present embodiment, the cam hole 26a of the cam plate 26 provided on the movable step 2a is guided by the cam roller 25 provided on the step body 2b. The tread 2a smoothly tilts. Here, the cam hole 26 a is
The riser 2e is provided so as not to interfere with the wheelchair-mounted steps 1 when tilted. And at the same time the movable tread 2
As a tilts, the wheel 22 moves along the guide rail 23 and operates to obtain a desired center of rotation.

As described above, according to this embodiment, the link mechanism, etc.
The movable tread 2a can be mounted on a wheelchair without the complicated structure of
It can tilt without interfering with the mounting step 1. And this place
In this case, the guide rail 23 of the wheel 22
Direction and at least one of
The roller 25 can also be removed from the outside of the step lower frame 2c.
The step 2 that can be tilted is a movable
2a and the step body 2b are assembled separately,
At the stage of comprehensive assembly, the wheels 22 of the movable tread 2a are
2b into the guide rail 23 and the cam roller 25
Of the movable step board 2a by inserting
By engaging with the cam plate 26, it is easy to assemble.
Can be.

[0018]

As described above, according to the present invention, it is possible to provide an escalator step device having a freely tiltable step which can be simplified in assembly without having a complicated structure.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a tiltable step of the present invention.

FIG. 2 is a front view showing a configuration of a free-moving step according to the present invention.

FIG. 3 is a front view showing the configuration of the free step of the present invention.

FIG. 4 is a cross-sectional view showing a configuration of a cam roller of the free step of 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 illustrating a configuration of a conventional tiltable step.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Step mounted on a wheelchair, 2 ... Tilt free step, 2a ... Movable step board, 2b ... Step main body, 22 ... Wheel, 23 ... Guide rail, 25
... Cam roller, 26 ... Cam plate.

Claims (1)

(57) [Claims] An escalator in which at least one step among a large number of steps forming an escalator is configured as a tiltable step including a tiltable movable step and a step main body that supports the movable step in a tiltable manner. A wheel pivotally supported at a lower portion of the movable step board; and a wheel provided on the step main body for movably guiding and supporting the wheel , and
It is configured to be able to be inserted and removed from at least one of the moving directions of the wheel.
And the guide rail, et provided on both sides in the width direction of the movable tread plate
Cam plate and the step body from outside of the step body
An escalator step device including a detachably provided cam roller that engages with the cam plate of the movable step plate and guides the tilt of the movable step plate .