JPS63701Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in a device for driving a moving handrail of a passenger conveyor.

The moving handrails and steps of passenger conveyors such as escalators and moving walkways are driven by respective chain gears provided within the main frame. In order to reduce the overall width of the passenger conveyor for a given step width, efforts have been made to arrange the chain gears, as shown in, for example, Japanese Patent Laid-Open No. 57-4875. This is shown in FIGS. 1 to 4.

In the figure, 1 is a truss that forms the skeleton of the passenger conveyor, 2 is a parapet fixedly erected on the truss 1, 3 is a moving handrail placed around the outer periphery of the balustrade 2, and 4 and 5 are inside the truss 1 from the upper floor. Step rails 6 are connected to each other in an endless manner and are fixed to the upper end.A front wheel 8 is attached to the shaft 7 and the shaft 9 is fixed to the lower end.
The rear wheels 10 are attached to the step rails 4,
Steps 5 move by rolling on them; 11 is a driving machine installed in the machine room on the upper floor side of the truss 1;
is a drive shaft rotatably supported by truss 1, 13
is fixed to the drive shaft 12 and connected to the drive shaft 1 via a chain 14.
1 is a drive chain gear driven by 1, 15 is a step chain gear fixed to the shaft 12 in pairs on the left and right, 16 is a step chain wound around the step chain gear 15 and connected to the shafts 7 of all steps 6, 17 is a drive First handrail chain gears are fixed to the shaft 12 in pairs on the left and right and are arranged between the step chain gear 15 and the drive chain gear 13; 18 is a chain wrapped around the first handrail chain gear 17; 19 is fixed to the truss 1; 20 is a pair of left and right handrail chain gears that are rotatably attached to the shaft 19 and around which the chain 18 is wound; 21 is a pair of third handrail chain gears that are fixed to the second handrail chain gear 20 and rotate integrally therewith; handrail chain gear,
22 is a chain wrapped around the third handrail chain gear 21, and 23 is a fourth handrail chain gear that is rotatably attached to the truss 1 (four pieces in the figure) and arranged along the return side of the movable handrail 3. , 24 is a handrail drive wheel that is driven by the fourth handrail chain gear 23 and contacts the moving handrail 3 to drive it.

That is, when the drive machine 11 is driven, the chain 14
The drive chain gear 13 rotates via the step chain gear 1
5 is driven. Now, the step 6 is connected via the chain 16.
The front wheel 8 is guided by the step rail 4 and the rear wheel 10 is guided by the step rail 5, thereby moving between the parapets 2, 2. On the other hand, due to the rotation of the drive chain gear 13,
The first handrail chain gear 17 also rotates, and the second handrail chain gear 20 is driven via the chain 18. With this, the third handrail chain gear 21 also rotates, the fourth handrail chain gear 23 rotates via the chain 22, and the handrail drive wheel 24 rotates.
is driven. As a result, the moving handrail 3 is
The outer periphery of the step 6 is moved in synchronization with the movement of the steps 6.

In this way, by arranging the first handrail chain gear 17 between the step chain gear 15 and the drive chain gear 13, the width of the truss 1 is reduced.

However, since the first handrail chain gear 17 is provided as a pair on the left and right, the second handrail chain gear 20 and the chain 18
One on each side is required, which increases the manufacturing cost and requires time and effort to attach and adjust the chain 18.

This idea is to improve the above-mentioned problems, and the first
A handrail drive device for a passenger conveyor that has one handrail chain gear on each side and fixes the second and third handrail chain gears on the same axis, thereby reducing manufacturing costs and reducing the labor of installation, adjustment, maintenance, etc. The purpose is to provide

An embodiment of this invention will be described below with reference to FIGS. 5 to 7.

In this embodiment, the first handrail chain gear 17 is connected to the shaft 1
It is provided only on one side of 2. Further, the shaft 19 is rotatably attached to the truss 1, and the second and third handrail chain gears 20 and 21 are fixed to the shaft 19, respectively. Furthermore, the second handrail chain gear 20 is also connected to the shaft 19.
It is provided only on one side of the Other than the above, it is the same as in FIGS. 1 to 4.

When the drive machine 11 rotates and the drive chain gear 13 is driven, the second handrail chain gear 20 rotates through the first handrail chain gear 17 and the chain 18, and the third handrail chain gear 21 rotates through the shaft 19. is also driven. The subsequent operations are similar to those shown in FIGS. 1 to 4, and power transmission is performed without any problem. Since there are only one first and second handrail chain gears 17, 20 and one chain 18, it goes without saying that this is advantageous in terms of manufacturing costs, installation, etc.

In addition, in the embodiment, the first handrail chain gear 17 was provided between the drive chain gear 13 and the step chain gear 15,
It may also be provided at a corresponding position on the opposite side of the drive chain gear 13 (on the left side in FIG. 6).

As explained above, in this invention, the first handrail chain gear is fixed between the drive chain gear and the step chain gear or in the opposite position corresponding thereto, and the second handrail chain gear is driven by the first handrail chain gear; a third handrail coupled to a fourth handrail chain gear that drives the moving handrail;
Since the chain gear and the chain gear are fixed coaxially, the first and second
Only one handrail chain gear and one chain are needed, which reduces manufacturing costs and makes installation, adjustment, and
The effort required for maintenance etc. can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view showing a conventional handrail drive device for a passenger conveyor, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 5 is a cross-sectional view showing an embodiment of the handrail drive device for a passenger conveyor according to this invention, and FIG. 6 is a view corresponding to FIG. 3, and FIG. 7 is a cross-sectional view corresponding to FIG. is also a diagram equivalent to Figure 4. 3...Movable handrail, 6...Steps, 11...Driver, 12...Drive shaft, 13...Drive chain gear, 15
...Step chain gear, 17...First handrail chain gear, 1
9... shaft, 20... second handrail chain gear, 21...
Third handrail chain gear, 23... Fourth handrail chain gear.
Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A drive machine installed in the machine room, a drive chain gear driven by the drive machine, a pair of step chain gears fixed to a shaft to which the drive chain gears are fixed and driving the steps, the drive chain gear and the step chain gear. a first handrail chain gear fixed to the shaft to which they are fixed, arranged between or in corresponding opposite positions; a second handrail chain gear driven by this first handrail chain gear; this second handrail chain gear; A handrail drive device for a passenger conveyor, comprising: a pair of third handrail chain gears fixed to a fixed shaft; and a pair of fourth handrail chain gears each provided with a pair and driven by the third handrail chain gear to drive a movable handrail. .