JPH10310355A - Handrail drive device for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drive handrails by providing the dedicated sprockets of a handrail drive device between the forward side and return side of tread chains, and meshing the lugs of dedicated chains wound on the dedicated sprockets between the chain rollers of the tread chains for synchronization. SOLUTION: A main sprocket 2 is driven by a drive machine 11 via a drive chain 12, tread chains 5 wound on it are rotated, and treads 4 connected to the tread chains 5 are rotated. Handrails 14 are pinched and driven by handrail drive devices 15. Sprockets 16a, 16b are arranged on the return side tread chains 5b, dedicated chains 17 are wound on them, and the lugs of the dedicated chains 17 are inserted between the chain rollers of the tread chains 5. Rotation is applied to the sprockets 16a, 16b by the movement of the tread chains 5, this rotation is transferred to handrail drive rollers via drive chains 18, and the handrails 14 are delivered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor for transporting passengers by a plurality of treads connected to an endless tread chain.

[0002]

2. Description of the Related Art In general, an electric road, which is a kind of a passenger conveyor on which a passenger moves, is constructed by connecting a plurality of treads to endless tread chain provided on the left and right through a shaft. It is configured to be wound around two sprockets and apply a rotational force to one of the sprockets to move the tread.

[0003] As a prior art relating to this type of passenger conveyor, for example, a technology described in Japanese Patent Application Laid-Open No. 2-193886 is known.

[0004]

In the prior art, the driving force of the sliding handrail must be increased as the traveling distance becomes longer, so that the power is transmitted from the main driving gear on the driving side. There are problems that the handrail driving device needs to be complicated and the frame frame must be enlarged in order to cope with the general method of obtaining.

There is also a handrail driving method for obtaining power from a tread chain via a sprocket at an intermediate portion, but it cannot be said to be a good means for generating pulsation. SUMMARY OF THE INVENTION An object of the present invention is to provide a comfortable passenger conveyor that prevents the handrail drive device from becoming complicated and the frame frame from becoming large, and that causes less unpleasant pulsation.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a dedicated sprocket between an inflow side and a return side of a tread chain continuously arranged between two driving side and driven side sprockets. Are provided, and the projections of the dedicated chain wound around these two dedicated sprockets are engaged with the chain rollers of the tread chain to synchronize them, whereby the dedicated sprocket can obtain rotation with little speed fluctuation. Thereby, the handrail can be driven without complicating the handrail driving device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a passenger conveyor according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view schematically showing an electric road according to one embodiment of the present invention, FIG. 2 is an enlarged view of a main part showing one embodiment of the present invention, FIG. 3 is a cross-sectional view along II, and FIG. It is an enlarged view of the meshing part of a chain.
1 to 4, 1 is a frame, 2 is a main sprocket, 3 is a sub-sprocket, 4 is a tread plate, 5 is a tread chain, 6 is a front wheel, 7 is a front shaft, 8 is a rear wheel, and 9 is a rear shaft. , 10 is a front and rear wheel rail, 11 is a drive machine, 12 is a drive chain,
13 is a balustrade panel and 14 is a handrail. In one embodiment of the present invention described below, a pair of main sprockets 2 is pivotally supported on one of two longitudinal sides of a frame 1 that is horizontally installed on a passage, and a pair of sub-sprockets 3 is mounted on the other.
A tread chain 5 as a main chain is wound left and right between the main sprocket 2 and the sub sprocket 3. The left and right treadboard chains 5 are connected by a front shaft 7, and a front wheel 6 is incorporated at a side end thereof.

A rear shaft 9 is fixed to the tread plate 4, and the rear shaft 9
Is mounted with a rear wheel 8. Then, the vehicle travels on front and rear wheel rails 10 that guide and support the front wheel 6 and the rear wheel 8.

The main sprocket 2 is driven by a drive machine 11 via a drive chain 12 to rotate the tread chain 5 wound therearound, and to turn the tread plate 4 together with the front shaft 7 connected to the tread chain 5. To move passengers.

On the other hand, a balustrade panel 13 supported by the frame 1 is erected along the moving direction of the step board 4, and a handrail 1 is provided on the periphery of the balustrade panel 13.
4 is movably supported.

The handrail 14 is provided in a frame.
It is driven by the handrail driving device 15 to pinch. In order to squeeze and drive the handrail 14, two sprockets 16a, 16b
And a dedicated chain 17 is wound around the two sprockets 16a and 16b.

FIG. 4 is an enlarged view of the meshing portion of the special chain. The projection 17a of the special chain 17 enters between the chain rollers of the tread chain 5, and the sprockets 16a and 16b are rotated by the movement of the tread chain 5,
A handrail drive roller 19 rotates from a sprocket 16 c provided coaxially via a drive chain 18,
The handrail 14 is sent out.

At this time, when the special chain 17 engages with the tread chain 5b, the protrusion 17a of the special chain 17 is used.
However, it interferes with the chain roller 5c of the tread chain 5b. In order to prevent this, the projection 17a of the exclusive chain 17 has a slide structure so as to be pushed when it comes into contact with the chain roller 5c, and a spring 20 is provided to return the pushed projection 17a to its original position. ing.
When the projection 17a of the special chain 17 comes near the middle of the two sprockets, it is returned by the spring 20 and moves with the movement of the tread chain.

Further, an auxiliary guide 21 is provided near the sprockets 16a and 16b in consideration of the case where the rubber portion of the front wheel 6 or the rear wheel 8 is peeled off.

According to the present embodiment, even if the passenger conveyor has a long running distance, it is necessary to increase the size of the frame frame without complicating the handrail driving device by disposing the passenger conveyor at several places in the above-described configuration. Can respond without. Furthermore, since power is obtained from the tread chain, speed fluctuations are less likely to occur, so that unpleasant pulsation can be prevented.

[0016]

According to the present invention, even when a passenger conveyor having a long mileage is installed, it is possible to cope without complicating the handrail driving device and without increasing the size of the frame. A comfortable passenger conveyor with less unpleasant pulsation can be provided.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an electric road according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a main part showing one embodiment of the present invention.

FIG. 3 is a sectional view taken along the line II.

FIG. 4 is a side view of a meshing portion of a dedicated chain.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame frame body, 4 ... Tread plate, 5, 5a, 5b ... Tread chain, 5c ... Chain roller, 6 ... Front wheel, 7 ... Front shaft,
8 ... rear wheel, 9 ... rear axle, 10 ... front and rear wheel rail, 14 ... handrail, 15 ... handrail drive, 16c ... sprocket, 17 ... dedicated chain, 18 ... drive chain,
19: drive roller, 20: spring.

Claims (3)

[Claims] 1. A treadle chain which is connected endlessly and turns, a front shaft which is incorporated into the treadle chain at a fixed interval, and a front wheel which is provided at a side end thereof, and which is incorporated into the front shaft together with the treadle chain. A tread plate having a rear wheel that turns, a handrail that moves at the same speed as the tread plate, and a passenger conveyor with a balustrade that supports the tread plate, wherein the driving force of the handrail is obtained from the turning tread plate chain. Handrail drive for passenger conveyor. 2. The driving force of the handrail is provided by a dedicated chain and a sprocket disposed between the tread chain on the outgoing side and the tread chain on the return side.
The handrail driving device for a passenger conveyor, wherein the dedicated chain has a projection provided on a link plate, and the projection is inserted between chain rollers of the tread chain. 3. The handrail drive device for a passenger conveyor according to claim 2, wherein the engagement between the exclusive chain and the tread chain is made at a plurality of positions.