JP2001139271A - Handrail belt driving device for man conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handrail driving device for a man conveyor permitting the smooth, positive travel of a handrail belt and suppressing the formation of indentation on the surface of the handrail belt. SOLUTION: This driving device is provided with driving rollers 15 and pressure rollers 16. The pressure rollers 16 are energized by a spring mechanism 20 in a direction of coming in elastic contact with the driving rollers 15, and the driving rollers 15 are rotated to drive the handrail belt 13 by frictional force between the driving rollers 15 and the handrail belt 13 so as to endlessly travel in one direction. The driving device is provided with a belt mechanism 21 formed by extending an endless flat belt 23 between a pair of pulleys 22. A partial area of the flat belt 23 in the belt mechanism 21 is interposed between the pressure rollers 16 and the surface of the handrail belt 13, and the pressure rollers 16 are pressed to the handrail belt 18 through the flat belt 23 by the elastic energizing force of the spring mechanism 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving apparatus for a handrail belt in a man conveyor that transports passengers by traveling a series of steps in which a number of steps are connected endlessly through a chain.

[0002]

2. Description of the Related Art In an escalator as a man conveyor, for example, a truss and a balustrade are installed between a lower floor and an upper floor of a building, and a truss is formed by connecting a number of steps endlessly. An endless handrail belt made of a synthetic resin having flexibility is attached to the outer periphery of the balustrade, and the step train is driven endlessly by a driving device to transport passengers, and the outer periphery of the balustrade is The handrail belt runs endlessly in synchronization with the step train.

FIG. 4 shows a truss 1 and a balustrade 2, and an endless handrail belt 3 is movably mounted on an outer periphery of the balustrade 2. A handrail belt driving device 4 is provided in the middle of the travel path of the handrail belt 3.

As shown in FIG. 5, the handrail belt driving device 4 has a plurality of drive rollers 5 provided in parallel so as to contact the handrail belt 3, and the drive rollers 5 and the handrail belt 3 are sandwiched therebetween. It comprises a plurality of pressing rollers 6 provided to face each other. Each drive roller 5 is driven and rotated by a motor (not shown) as a drive source, and the handrail belt 3 is driven to travel in one direction by the frictional force between the rotating drive rotor 5 and the handrail belt 3.

In order for the handrail belt 3 to run smoothly and reliably, it is necessary to generate a sufficient frictional force between the handrail belt 3 and each drive roller 5. For this reason, in the prior art, the pressing roller 6 is movably supported in a direction perpendicular to the handrail belt 3, and the pressing roller 6 is pushed upward by a strong force using a spring mechanism 7, so that the pressing roller 6 and each drive The handrail belt 3 is sandwiched between the roller 5 and the roller 5 with a strong force to obtain a sufficient frictional force.

[0006]

By the way, if the structure is such that the handrail belt 3 is sandwiched between the driving roller 5 and the pressing roller 6 facing each other with a strong force to travel, the pressing roller 6 and the driving roller 5 become Handrail belt 3
Is pressed in a line contact state locally. If such a pressure contact state continues for a certain period of time at a part of the handrail belt 3 due to the stop of the handrail belt 3, an impression is generated on the handrail belt 3 at the part of the handrail belt 3 by the pressing of the pressing roller 6.

In particular, the pressing rollers 6 in contact with the surface side of the handrail belt 3 have a relatively small diameter, so that these pressing rollers 6 bite relatively deeply into the surface of the handrail belt 3 to generate strong impressions. When the handrail belt 3 travels, the indentation moves to the upper side of the balustrade 2 and is exposed, resulting in impairing the appearance of the handrail belt 3.

Further, if such indentations are repeatedly formed on the handrail belt 3, the life of the handrail belt 3 is shortened, and the handrail belt 3 may be deteriorated relatively early.

If the pressing force of the pressing roller 6 and the driving roller 5 against the handrail belt 3 is weakened, it is possible to suppress the occurrence of indents. However, if the pressing force is weakened, the driving force of the handrail belt 3 is reduced, The smoothness and certainty of running of the handrail belt 3 are impaired.

The present invention has been made in view of such a point, and an object of the present invention is to make it possible to make a handrail belt run smoothly and surely and to reduce the occurrence of indentations on the surface of the handrail belt. An object of the present invention is to provide a handrail belt driving device for a man conveyor that can be suppressed.

[0011]

According to the present invention, a driving roller and a holding roller are provided so as to face each other with an endless handrail belt provided on an outer periphery of a balustrade. The pressing roller is elastically urged by a spring mechanism in a direction of pressing against the driving roller, and the rotation of the driving roller drives the handrail belt with a frictional force between the driving roller and the handrail belt to endlessly move in one direction. In a handrail belt driving device to be run, a belt mechanism is provided in which an endless flat belt is stretched between a pair of pulleys, and a part of the flat belt in the belt mechanism is formed by the pressing roller and the surface of the handrail belt. Interposed between, the pressing roller is pressed against a handrail belt via the flat belt by an elastic biasing force of the spring mechanism,
A sufficient frictional force is applied between the driving roller and the handrail belt based on the pressing.

In particular, according to the invention of claim 2, the flat belt in the belt mechanism is a toothed belt having uneven teeth on its inner surface, and each pulley has teeth on its peripheral surface corresponding to the uneven shape. It is characterized in that it is a pulley with attachment.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an escalator truss 11 and a balustrade 12 as a man conveyor, and an endless handrail belt 13 is movably mounted on the outer periphery of the balustrade 12.

A handrail belt driving device 14 is provided on the running path of the handrail belt 13. The handrail belt drive device 14 includes a plurality of drive rollers 1 provided in parallel above the handrail belt 13.
5 and a plurality of pressing rollers 16 provided in parallel on the lower side so as to face the respective driving rollers 15.

As shown in FIGS. 2 and 3, each drive roller 15 is supported by a frame 17 attached to the truss 11, and these drive rollers 15 are driven via a motor (not shown) as a drive source. It is designed to rotate.

Each pressing roller 16 is rotatably supported on a frame 17 via a bracket 18 and movably in a direction perpendicular to the handrail belt 13, and is pressed against a driving roller 15 opposed thereto by a spring mechanism 20. To be elastically biased.

Further, the frame 17 is provided with a belt mechanism 21. The belt mechanism 21 is located at both ends in the arrangement direction of the pressing rollers 15 and is rotatably mounted on the frame 17 with a pair of pulleys 22. 21 and an endless flat belt 23 which is stretched so as to be able to run.

The flat belt 23 is partially interposed between the surface of the handrail belt 13 and each of the pressing rollers 16. The peripheral surface of each pressing roller 16 elastically urged by the spring mechanism 20 is strongly pressed against the surface of the handrail belt 13 via the flat belt 23.

During operation of the escalator, each drive roller 1
5 rotates, and accordingly, the handrail belt 13 sequentially travels in one direction due to the frictional force between each drive roller 15 and the handrail belt 13. The flat belt 23 runs endlessly between the pulleys 22 by the frictional force between the handrail belt 13 and the flat belt 23 in accordance with the running of the handrail belt 13.

The flat belt 23 interposed between each press roller 15 and the handrail belt 13 is in surface contact with the surface of the handrail belt 13, so that each press roller 16 is pressed against the drive roller 15 by the spring mechanism 20. Even if the pressing roller 16 is urged elastically strongly in the direction in which the handrail belt 13 is formed,
Therefore, the appearance of the surface of the handrail belt 13 can always be kept good, and since no indentation is formed, a reduction in the life of the handrail belt 13 due to this can be suppressed.

Since there is no danger of indentation, each pressing roller 16 is strongly pressed by the spring mechanism 20 in the direction of pressing against the driving roller 15, and a sufficient frictional force is applied between each driving roller 15 and the handrail belt 13. , And the handrail belt 13 can be driven smoothly and reliably by the sufficient frictional force to travel.

In another embodiment of the present invention, the flat belt 23 in the belt mechanism 21 is a toothed belt having uneven teeth on its inner surface, and each pulley 22 is provided with teeth corresponding to the uneven shape on its peripheral surface. It is also possible to use a toothed pulley with a handle. In this case, the toothed flat belt 23 travels while meshing with the toothed pulley 22, and the traveling reliability is improved.

The present invention can be applied not only to the handrail belt of an escalator but also to a handrail belt of a man conveyor such as a moving sidewalk.

[0024]

As described above, according to the present invention,
The holding roller is strongly urged by a spring mechanism to secure a large frictional force between the driving roller and the handrail belt, so that the handrail belt can run smoothly and reliably, and between the holding roller and the handrail belt. With the flat belt interposed therebetween, the occurrence of indentations on the surface of the handrail belt can be suppressed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a schematic configuration of an escalator according to an embodiment of the present invention.

FIG. 2 is an enlarged side view showing a handrail belt driving device incorporated in the escalator.

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

FIG. 4 is a configuration diagram showing a schematic configuration of a conventional escalator.

FIG. 5 is an enlarged side view showing a handrail belt driving device incorporated in the escalator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Truss 12 ... Balustrade 13 ... Handrail belt 14 ... Handrail belt drive device 15 ... Drive roller 16 ... Holding roller 20 ... Spring mechanism 21 ... Belt mechanism 22 ... Pulley 23 ... Flat belt

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tsutomu Otsuki 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in the Fuchu factory of Toshiba Corporation (reference) 3F321 AA03 CA43 CA46

Claims (2)

[Claims] A driving roller and a pressing roller are provided so as to face each other with an endless handrail belt provided on an outer periphery of a balustrade, and the pressing roller is elastically pressed against the driving roller by a spring mechanism. A handrail belt driven by the rotation of the drive roller to drive the handrail belt with frictional force between the drive roller and the handrail belt to run endlessly in one direction. A belt mechanism is provided over the belt, a part of the flat belt in the belt mechanism is interposed between the pressing roller and the surface of the handrail belt, and the pressing roller is elastically driven by the spring mechanism. A handrail belt driving device for a man conveyor, wherein the handrail belt is pressed against the handrail belt via the flat belt by an urging force. 2. A flat belt in a belt mechanism is a toothed belt having teeth on its inner surface with irregularities, and each pulley is a toothed pulley with teeth on the peripheral surface corresponding to the irregularities. The driving device for a handrail belt of a man conveyor according to claim 1.