JPS6330785Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Field of application of invention] The present invention relates to steps for a passenger conveyor.

[Background of the idea]

Conventionally, a passenger conveyor has a drive chain 2 driven by a drive sprocket 1 as shown in FIG.
The front wheels 4 of a large number of steps 3 are connected to each other, and the front wheels 4 and rear wheels 5 of the steps 3 roll on a guide rail 6 by a drive chain 2 .

In the case of the microconveyor, when the steps are being operated in the upward direction, the direction is to lift the passengers, so the drive chain 2
is pulled, so the front wheel 4 is pressed against the rail 6, and the steps 3 are also pressed against the rail 6. However, in the case of descending operation, the step 3 no longer has the force to press against the rail surface as it does during ascending operation. Therefore, if something gets caught between the step 3 and the skirt guard (not shown), if something gets caught adjacent to the step as shown in Figure 2a, or if the riser of the step 3 gets caught by a passenger's shoes, etc. When 3a is suppressed,
As shown in FIG. 2b, when the guide rail 6a of the front wheel 4 becomes horizontal from an inclined position, it rotates clockwise around the front wheel 4 and the rear wheel 5 side rises.

If the vehicle continues to drive with the rear wheels 5 floating in the air, it may collide with a comb (not shown) that scoops up feet at the entrance or a handrail (not shown), which may cause serious injury.

In order to solve these problems, Figures 3 and 4
As shown in figures a and b, a frame 3 forming a step 3
In b, a step 3 has been proposed and put into practical use, which is integral with the frame 3b from the upper side of the front wheel 4, and is provided with a protrusion 3c that extends toward the center of the preceding rear wheel 5 and is further inclined with respect to the tread surface 3d. There is. This protrusion 3c
Since the wheel is configured to have a slight gap G from the preceding rear wheel 5, lifting of the step 3 can be prevented, which is highly effective.

However, since this protrusion 3c protrudes like a knife toward the center of the preceding rear wheel 5, when the protrusion 3c and the rear wheel 5 come into contact, the rubber tire forming the outer periphery of the rear wheel 5 ( (not shown) was damaged. If the rear wheel 5 is damaged, not only will the steps 3 not be able to run smoothly, but in the worst case scenario, there is a risk that the rubber tire of the rear wheel 5 may come off or other problems may occur.

[Purpose of invention]

An object of the present invention is to provide a step that can prevent the step from lifting up without damaging the rear wheel of the step.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIGS. 5 and 6, the front wheel 4, rear wheel 5, guide rail 6, etc. are the same as before, but a protrusion 3e is provided near the front wheel 4 side of the frame 3b forming the step 3.
(corresponding to the conventional 3c) is characterized by having a shape almost perpendicular to the tread surface 3d.

That is, in the frame 3b of the step 3, the front wheel 4
A protrusion 3e is provided near the side with a surface perpendicular to the tread surface 3d, and this vertical surface is shaped to face the preceding rear wheel 5 with a slight gap G. By providing this protrusion 3e, when the rear wheel 5 of the step 3 lifts up from the guide rail 6 due to the above-mentioned cause, the protrusion 3 provided on the frame 3b of the step 3 adjacent to the rear wheel 5
It can flatly contact the vertical surface of the rear wheel 5 to prevent it from lifting up, and it can also prevent damage to the rubber tire on the outer periphery of the rear wheel 5. The amount of lift of the rear wheel 5 is regulated by the distance G between the rear wheel 5 and the protruding portion 3e, and the distance from the guide rail is only a small amount.

When the step 3 comes to the curved portions 6a and 6b of the guide rail, the distance between the protrusion 3e of the step 3 and the rear wheel 5 is 5th.
As shown in the figure, the rotation around the front wheel 4 is limited by the gap G between the protruding portion 3e and the rear wheel 5 of the adjacent step 3 on the slope side, so that the step does not rise much. Furthermore, since the rear wheel 5 is inserted between the presser rail 6c and the guide rail 6b, lifting can also be prevented by the presser rail 6c.

[Effect of idea]

According to the present invention, it is possible to prevent the rear wheels of the steps of the passenger conveyor from lifting up around the front wheels, and also to prevent damage to the rear wheels.

[Brief explanation of drawings]

Figure 1 is a side view of the entire passenger conveyor, Figure 2 a
and b is an explanatory diagram showing the raised state of the steps of the passenger conveyor, FIG. 3 is a side view showing adjacent steps, FIG. 4 a is a side view showing the steps, and b is a front view.
Figure 5 is a side view of the present invention equivalent to Figure 3, Figure 6a
4 is a side view of the present invention corresponding to a in FIG. 4, and b is a front view of the present invention corresponding to b in FIG. 3...Steps, 3d...Treads, 3a...Riser,
3b...Frame body, 4...Front wheel, 5...Rear wheel, 6...
Guide rails, 3c, 3e...protruding parts.

Claims (1)

[Scope of utility model registration request] A step that is arranged in an endless manner and rotates, a tread, a riser, and a frame that constitute the step, a front wheel and a rear wheel that rotate while supporting the step, a guide rail that guides the front wheel and the rear wheel, and the step. In the passenger conveyor, the frame body is provided with a protrusion that faces the rear wheel of the adjacent step with a slight distance in order to prevent the rear wheel of the step adjacent to the step from lifting off from the guide rail. A step for a passenger conveyor, characterized in that a surface perpendicular to the tread surface is formed on a portion of the section facing the rear wheel.