JP3771356B2 - Moving handrail cleaning device for passenger conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a moving handrail cleaning device for a passenger conveyor provided in a passenger conveyor such as an escalator.
[0002]
[Prior art]
Conventionally, in passenger conveyors such as escalators, for example, as described in Japanese Patent Application Laid-Open No. 5-24782, etc., there is provided a means for selectively abutting a cleaning tool that comes into sliding contact with a moving handrail to the moving handrail. An automatic cleaning device for moving handrails has been proposed that automatically cleans the surface of the moving handrail with the cleaning tool and automatically updates the cleaning tool.
[0003]
[Problems to be solved by the invention]
However, in the conventional automatic handrail cleaning device for passenger conveyors, the vertical movement drive system of the pressing portion when the cleaning tool is automatically updated is mechanically complicated, and must always be energized during pressing. There are many problems in terms of device reliability and energy saving because of the solenoid system.
[0004]
An object of the present invention is to provide a moving handrail cleaning device for a passenger conveyor that is most advantageous in terms of energy saving because it has a simple structure, is highly reliable, and can be operated by energization only when the pressing portion moves up and down.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the present invention comprises means for selectively bringing a cleaning tool that comes into sliding contact with a moving handrail of a passenger conveyor into contact with the moving handrail, and the moving handrail is moved by the cleaning tool as the moving handrail moves. automatically cleaning the surface of, and in the moving handrail cleaning device of a passenger conveyor for automatically updating the cleaning tool, pulling away the cleaning tool during automatic updating of the cleaner from the moving handrail, again after updating end wherein comprising a cleaning tool pressing means for pressing the moving handrail, the cleaning tool pressing means, an eccentric cam for vertically moving said cleaning tool, and a one-way rotation clutch that prevents the reverse rotation of the eccentric cam, the one-way rotation clutch And a clutch support bracket to which the outer periphery of the motor is fixed .
[0006]
According to this means, as the cleaning tool pressing means for bringing the cleaning tool in sliding contact with the moving handrail of the passenger conveyor into contact with or moving away from the moving handrail, the eccentric cam for moving the cleaning tool up and down, and the reverse rotation of the eccentric cam. Since it has a configuration that combines a one-way rotating clutch that prevents it , it has few components and is highly reliable in operation. It can be inexpensive. It only needs to be energized when the cleaning tool is pulled away from the moving handrail or pressed. There are many advantages.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the form of the handrail cleaning device for passenger conveyors of the present invention will be described with reference to the drawings.
[0008]
FIG. 1 is a side view of a passenger conveyor equipped with a passenger handrail cleaning device according to an embodiment of the present invention.
[0009]
The moving handrail 1 is configured to be movable along the guide 2 and moves in synchronization with an endless step (not shown). A moving handrail cleaning device 3 is provided at a portion facing the surface of the moving handrail 1, and details of the moving handrail cleaning device 3 are shown in FIG.
[0010]
FIG. 2 is a side view showing a moving handrail cleaning device for a passenger conveyor according to an embodiment of the present invention showing an enlarged main part of FIG.
[0011]
As shown in FIG. 2, the moving handrail cleaning device 3 installed on the passenger conveyor includes a main body case 4 having an upper surface opening, a first shaft body 6 in which an unused belt-shaped cleaning tool 5 is mounted in a roll shape, and belt-shaped cleaning. A cleaning tool pressing means comprising a second shaft body 7 that winds up a used part of the tool 5 and a part of the unused portion of the belt-like cleaning tool 5 that presses a part of the moving handrail 1 and makes contact with the surface of the moving handrail 1. 8, a moving handrail speed detecting means 9 for detecting whether or not the moving handrail moves, a moving direction of the moving handrail, a cleaning liquid tank 10 for impregnating the cleaning tool 5 with a cleaning liquid such as silicon liquid for improving the cleaning effect, and a moving handrail Control means 11 that monitors, stores, calculates, and controls the state of the cleaning device 3, an operation unit that instructs operation start of the moving handrail cleaning device 3, and an operation display unit 12 that displays the state are provided at least.
[0012]
The pressing means 8 is disposed between the first shaft body 6 and the second shaft body 7 as shown in FIG. The second shaft body 7 that winds up the used portion of the belt-shaped cleaning tool 5 is provided with a clutch mechanism 13 that prevents reverse rotation of the shaft body and the used belt-shaped cleaning tool 5 for winding the second belt body 7 around the second shaft body 7. Cleaning tool updating means 14 for rotating the second shaft body 7 is provided.
[0013]
3-4 is a principal part structure figure which shows one Embodiment of the press mechanism of this invention.
[0014]
As described above, the pressing means 8 is configured to press the belt-shaped cleaning tool against the surface of the handrail when cleaning the moving handrail of the passenger conveyor, and to update the dirty belt-shaped cleaning tool after the set cleaning time has elapsed, This is a press-separation repeating mechanism in which a belt-shaped cleaning tool is pulled away from the surface and a predetermined amount is taken up, and then pressed against the moving handrail surface again.
[0015]
The structure of the pressing means 8 of the present plan will be described in detail. As shown in FIGS. 3 to 5, the pressing means 8 is held by guides 23 and 24 inside a pressing holder 22 fixed on the pressing support base 21, and There is a pressing shaft 25 fixed to the guide 24 with a screw. Further, a pressing base 29 having a sponge cushion 28 attached to the upper surface, supported by a pin 27 from a receiving metal 26 screwed to the guide 24, is provided on the guide 23. The belt-shaped cleaning tool 5 is pressed against the moving handrail 1 by a pressing spring 30 set between 24 and 24.
[0016]
Further, the driving portion of the pressing means 8 is integrated with an eccentric cam 40 fixed to the extension shaft 37 on the shaft of the motor 35 attached to the motor support bracket 36 and an outer periphery thereof integrated with the motor support base 36. A one-way rotary clutch 39 that is fixed to the clutch support bracket 38 by rotation is inserted.
[0017]
In addition, a roller 42 supported by a pin 41 at the lower end of the guide 23 is in contact with the outer peripheral surface of the cam 23 in order to transmit the rotation of the cam 40 to the pressing table 29, and the cam 40 is rotated when the cam 40 is rotated by the motor 35. The pressing table 29 is driven in the up-down direction while rolling on the outer periphery. In addition, the pressing means 8 includes means (not shown) for detecting the upper limit position and the lower limit position of the cam 40.
[0018]
Due to such a configuration, when the operation of the moving handrail 1 of the passenger conveyor is started, an operation start command is received from the moving handrail speed detecting means 9, and the motor 35 moves the cam 40 in the direction of the solid arrow 50 (left Rotation) and the pressing stand 29 presses the belt-shaped cleaning tool 5 against the moving handrail 1 via the pressing spring 30 and the cushion 28 (FIGS. 3 and 4).
[0019]
In this case, since the one-way rotary clutch 39 rotates in the forward direction, no rotation resistance is generated, and the cam 40 stops at a position where the upper limit position detecting means operates, that is, a position 15 ° before the upper limit point in this embodiment. (FIG. 3). The reason for operating before the upper limit is to prevent the stop position of the cam 40 from exceeding the upper limit due to the inertia of the motor and other rotating bodies after the motor stop command by the operation of the detecting means.
[0020]
In this way, the cleaning of the moving handrail is started, but during the cleaning, the cam 40 stopped before the upper limit point is always in the direction of the dotted arrow 50 '(right rotation) due to the reaction force of the spring 30 of the pressing table 29. It receives the rotational force pushed back to (FIG. 3) In order to hold the pressing table 29 against this reaction force, the reverse rotation preventing force of the one-way rotation clutch 39 is applied in this proposal.
[0021]
That is, the one-way rotary clutch 39 does not rotate in the direction of the dotted arrow 50 ′ because the outer periphery of the clutch is fixed to the clutch support fitting 38, and maintains the reaction force of the spring 30. However, it should be noted here that, as shown in FIG. 3, the reaction force must be received in the direction of the dotted arrow 50 '. If the cam 40 exceeds the upper limit point, the reaction force is If you receive it in the direction, it will not function at all.
[0022]
Of course, the one-way rotary clutch 39 is selected to have a blocking torque that can sufficiently withstand the reaction force of the spring.
[0023]
Now, when the set cleaning time has passed and the belt-like cleaning tool 5 has become dirty, the belt-like cleaning tool 5 needs to be pulled away from the moving handrail 1 when the cleaning surface is updated. In the case of the present plan, the cleaning device receives a command from the control means 11, and the motor 35 again rotates the cam 40 almost in half in the direction of the solid arrow 50 (left rotation). Stop at the lower limit. As a result, as shown in FIG. 5, a gap is formed between the moving handrail 1 and the cushion 28 of the pressing table 29, and the belt-like cleaning tool 5 can be wound.
[0024]
【The invention's effect】
As described above , according to the present invention , the cleaning tool pressing means for separating or pressing the cleaning tool from the moving handrail has the eccentric cam that moves the cleaning tool up and down, and the one-way rotary clutch that prevents the eccentric cam from reversing. Therefore, the number of components for moving the cleaning tool up and down is smaller than that of the prior art, so that high reliability can be maintained , and a small, light and inexpensive cleaning device can be provided.
[Brief description of the drawings]
FIG. 1 is a side view of a passenger conveyor equipped with a moving handrail cleaning device for passenger conveyor according to an embodiment of the present invention.
FIG. 2 is a side view showing a moving handrail cleaning device for a passenger conveyor according to an embodiment of the present invention showing an enlarged main part of FIG. 1;
FIG. 3 is a structural diagram showing an embodiment of a belt-like cleaning tool pressing portion of the present invention.
4 is a structural diagram in a direction perpendicular to the passenger conveyor moving handrail of FIG. 3;
FIG. 5 is an operation diagram of a pressing portion lower limit point in FIG. 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Moving handrail 2 Guide 3 Moving handrail cleaning apparatus 4 Main body case 5 Band-shaped cleaning tool 6 1st shaft body 7 2nd shaft body 8 Cleaning tool press means 9 Moving handrail speed detection means 10 Cleaning liquid tank 11 Control means 12 Operation display means 13 Clutch mechanism 14 Cleaning tool update means 15 Cleaning tool update drive motor 21 Press support base 22 Press holder 23 Guide 24 Guide 25 Press shaft 26 Receiving bracket 27 Pin 28 Cushion 29 Press base 30 Press spring 35 Motor 36 Motor support bracket 37 Extension shaft 38 Clutch support bracket 39 One-way rotation clutch 40 Cam 41 Pin 42 Roller 50 Rotation direction (left rotation)
50 'direction of rotation (right rotation)

Claims (1)

A means for selectively contacting the moving handrail with a cleaning tool that is in sliding contact with the moving handrail of a passenger conveyor, and automatically cleaning the surface of the moving handrail with the cleaning tool as the moving handrail moves; and In the handrail cleaning device for passenger conveyors that automatically updates the cleaning tool,
Wherein the automatic updating of cleaner pull the said cleaner from the moving handrail, with a cleaning tool pressing means for pressing again the moving handrail after the update completion,
The cleaning tool pressing means includes an eccentric cam that moves the cleaning tool up and down, a one-way rotation clutch that prevents reverse rotation of the eccentric cam, and a clutch support fitting to which an outer periphery of the one-way rotation clutch is fixed. A handrail cleaning device for passenger conveyors.

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