JP3787754B2 - Escalator steps - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a step provided on an escalator for passengers to ride.
[0002]
[Prior art]
An escalator is a transport system that transports passengers by circulatingly driving a plurality of steps. In general escalators, multiple steps are connected to an endless chain, and the chain is circulated by a drive unit installed at the top, bottom or middle of the chain, so that the multiple steps are connected in a circular motion. To do. This drive machine is composed of a single motor or a motor and a speed reducer, and serves as a sound source. The steps are supported by a plurality of rollers and rails, and collision noise and rolling noise are also generated from these rollers and rails. These sounds are radiated to the space mainly through the passenger boarding portion, the kick-up portion, and the side reinforcing portion constituting the step. At the same time, rolling vibration between the roller and the rail and step-passing impact are transmitted to the step as vibration.
[0003]
These sounds and vibrations are relatively small and do not detract from the safety and reliability of the escalator, but in order to enhance the escalator's sense of quality, it is important to reduce these sounds and vibrations It is.
[0004]
As a conventional technique for reducing these sounds and vibrations, for example, there is one disclosed in JP-A-6-16374. In this gazette, by constructing the passenger boarding portion with a tread board made of a thin metal plate and a tread board base made of a synthetic resin, the transmitted sound and vibration transmitted through the passenger boarding portion are reduced. .
[0005]
[Problems to be solved by the invention]
However, the above-described conventional technology may be effective in reducing the sound transmitted through the passenger riding portion and the kick-up portion, but does not have an effect of reducing the sound transmitted through the side reinforcing portion. That is, in the escalator, as shown in FIG. 8, among the transmitted sounds from the entire step, the transmitted sound from the side reinforcing part 3 is more sound than the transmitted sound from the passenger riding part 1 and the kick-up part 2. As shown in FIG. 9, this phenomenon is remarkable at the point 6 where the step 4 enters the lower side of the floor 5 of the landing. In FIG. 8, 7 indicates a handrail belt.
[0006]
Further, in the above conventional technique, the transmitted sound is reduced by the sound insulation characteristic of the synthetic resin, but in order to obtain a larger sound insulation characteristic, the tread base made of synthetic resin must be made thick. However, if the tread base is thick, the weight of the step is increased.
[0007]
An object of the present invention is to reduce transmitted sound and vibration from a step, in particular, transmitted sound from a side reinforcing portion, without increasing the weight of the step.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the steps of the escalator of the present invention include a rectangular passenger boarding portion on which a passenger is placed, and a kick-up unit provided at a substantially right angle on one side of the long side of the passenger boarding unit. A side reinforcement part that is provided substantially at right angles to both sides of the short side of the passenger boarding part and reinforces the passenger boarding part and the kick-up part . It is characterized by a space .
[0009]
Normally, when sound that has propagated through a material has a sparse part (that is, a space) in the material, part of the sound is reflected at the boundary between dense and sparse material, and the sound is Reduced. According to the said structure, a sound is reduced around the space provided in the inside of a side part reinforcement part, and the sound which permeate | transmits a side part reinforcement part can be reduced. Further, since the space is provided, the weight of the side reinforcing portion does not increase so much, and the increase in the weight of the step can be suppressed.
[0010]
The space can be filled with a gas or a sound absorbing material. When the gas is filled, the side reinforcing portion constitutes a double wall structure, and a larger sound insulation effect can be obtained than the side reinforcing portion of the conventional single wall structure. Further, when the sound absorbing material is filled, the side reinforcing portion has a sandwich structure. Although this structure has a higher manufacturing cost than a case where gas is filled, a good sound insulation effect can be obtained for sounds in a wider frequency band.
[0011]
When configuring the steps of the escalator, the following elements can be added.
(1) The said side part reinforcement part is formed with resin, and has the said space in the center part.
(2) The side reinforcing portion is formed of a metal or resin having a through hole at the center, and the space is formed by closing both end surfaces of the through hole with a plate-like member.
[0012]
Moreover, the said space can be provided not in a side part reinforcement part but in the inside of at least any one among the said passenger mounting part and the said kick-up part. Also when comprised in this way, a sound is reduced around space and the sound which permeate | transmits a passenger boarding part or a kick-up part can be reduced. Moreover, if a space is provided in the passenger boarding section and the kick-up section, the weight of the passenger boarding section and the kick-up section is reduced, and the weight of the step can be reduced.
[0013]
The space can also be filled with gas or a sound absorbing material. The space can also be filled with metal or resin. When the metal material is filled, a sound insulation effect can be obtained by reflecting and attenuating the sound at the interface between the main constituent material and the filler constituting the passenger riding part and the kicking part. In this case, the manufacturing cost is increased as compared with the case where the gas is filled, but the strength of the structure is increased.
[0014]
And when comprising the step of the escalator which provided the space in the passenger boarding part or the kick-up part, the following elements can be added.
(1) The space is a rod-shaped hole formed inside the comb teeth of the passenger riding part and the kicking part.
(2) The space is formed below the comb teeth of the passenger riding part and the kicking part.
(3) A corrugated plate fixed on a flat plate is provided on the passenger boarding portion and the kick-up portion, and the space is a gap defined by the flat plate and the corrugated plate.
(4) A resin film is interposed between the flat plate and the corrugated plate.
[0015]
Further, the present invention provides an escalator in which a plurality of steps are connected to an endless chain and the chain is circulated and driven by a drive unit so that the plurality of steps circulate in a chain. It is characterized by providing.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 shows a step of an escalator according to the present invention, and is a perspective view of one step. The main parts constituting the step 10 are a rectangular passenger mounting part 11 on which a passenger is placed, a kick-up part 12 provided substantially at a right angle on one side of the long side of the passenger mounting part 11, and a passenger mounting part 11 and a side reinforcement portion 13 that is provided substantially at right angles to both sides of the short side and reinforces the passenger riding portion 11 and the kick-up portion 12. Rear rollers 14 are provided on both sides of the lower part of the step 10. Further, a front shaft 16 is provided on the other side of the step 10 via a fastener 15, and the front shaft 16 passes through a chain 17, and a front roller 18 is rotatably attached to a tip portion.
[0017]
Comb teeth 20 and 21 are formed on the surface of the passenger boarding part 11 and the kick-up part 12, respectively, and these comb teeth 20 and 21 mesh with adjacent steps and combing teeth at the landing, so that the foot of the passenger etc. Is prevented from being caught.
[0018]
Further, as shown in FIG. 2, the side portion reinforcing portion 13 has a triangular shape and is entirely made of metal (iron, aluminum alloy, etc.) or resin. A space 22 is formed in the inner side center of the side reinforcing portion 13. Such a space 22 can be formed by providing a core when performing casting or injection molding. The space 22 is filled with gas or a sound absorbing material. The gas may be air.
[0019]
In such a configuration, when the chain 17 is circulated and driven by a motor (not shown), the step 10 is pulled and moved by the chain 17 while being supported by the front roller 18 and the rear roller 14.
[0020]
As shown in FIG. 3, bar-like holes 23 are formed in the comb teeth 20, 21 formed in the passenger boarding portion 11 and the kick-up portion 12 as a space. This rod-shaped hole 23 is filled with gas or a sound absorbing material. The gas may be air. If the comb teeth 20 and 21 are formed of a metal such as iron or an aluminum alloy, a metal of a material different from the metal can be filled. Moreover, if the comb teeth 20 and 21 are formed of resin, it is possible to fill a resin of a material different from the resin.
[0021]
If the space 20 is formed in the side reinforcement 13 or the space 20 is filled with gas as in the above configuration, the density of the substance of the body of the side reinforcement 13 is dense, A portion of the space 20 has a sparse material density, and a part of the sound transmitted from the lower side of the step 10 is reflected at the periphery of the space 20, so that the transmitted sound in the step 20 can be reduced.
[0022]
However, in general, in a double wall structure with a gas sandwiched between them, the sound insulation effect in a specific frequency band is low. This is because in the frequency band where the wavelength of the sound wave is equal to an integral multiple of the gap between the double walls, a resonance phenomenon occurs in the double walls, and even if reflection is repeated, the sound energy is accumulated without being attenuated. . Therefore, the gas filled in the space 20 is effective when the noise frequency band to be sound-insulated is narrow and the sound-insulation target frequency band and the frequency band at which the above-mentioned sound insulation effect is reduced can be shifted.
[0023]
On the other hand, when the space 20 is filled with a sound absorbing material, it is possible to suppress the sound insulation effect reduction phenomenon in a specific frequency band. This utilizes the effect that sound energy attenuates every time it passes through the sound absorbing material by repeating reflection even in a frequency band in which resonance occurs in the double wall. As the sound absorbing material, glass wool, urethane, foamed material, tar, asphalt, asbestos, viscous paint, and the like are suitable, but other materials can be used as long as they have high internal damping.
[0024]
And if the space 20 is formed in the side part reinforcement part 13, the weight of the side part reinforcement part 13 will not increase so much, and the weight increase of the step 10 whole can also be suppressed.
[0025]
Further, in the passenger boarding portion 11 and the kick-up portion 12, the material density is dense in the body of the comb teeth 20, 21, whereas the material density is sparse in the rod-like holes 20, 21, and the side portions As in the case of the reinforcing portion 13, part of the sound transmitted from the lower side of the step 10 is reflected at the periphery of the holes 20, 21, and the transmitted sound in the step 20 can be reduced.
[0026]
When the rod-shaped holes 20 and 21 are filled with metal, a sound insulation effect is obtained by reflecting and attenuating sound at the interface between different materials. In this case, since the metal used for filling increases the strength, the effect of improving the strength of the comb teeth 20 and 21 is also obtained. As the metal to be filled, those having high internal attenuation are suitable, and for example, lead, copper, zinc, nickel and alloys containing them are suitable.
[0027]
Further, when the comb teeth 20 and 21 are manufactured by resin molding, casting, or aluminum alloy die casting, the step 10 can be easily and inexpensively processed by molding a rod-shaped body made of a sound absorbing material or a metal material. Is possible.
[0028]
In the present embodiment, the bar-shaped hole 23 is formed as a space inside the comb teeth 20, 21. However, the position where the space is formed is not limited to the same position. For example, as shown in FIG. , 21 may be formed below the space 24. However, in this case, since the passenger weight is directly applied to the space 24 particularly in the passenger mounting section 11, the passenger mounting section 11 may be made of a material having high strength, such as stainless steel.
[0029]
( Reference Example 1 )
FIG. 4 shows Reference Example 1 of the present invention. In this reference example, a flat plate 25 is provided to form the comb teeth 20 and 21 on the passenger mounting portion 11 and the kick-up portion 12, and a corrugated plate 26 is joined on the flat plate 25. The flat plate 25 and the corrugated plate 26 are formed of iron, an aluminum alloy, a synthetic resin, etc., and the flat plate 25 and the corrugated plate 26 may be joined to only a specific number of locations, or all the contacting locations may be bonded or welded. It can also be joined by welding.
[0030]
A gap formed between the flat plate 25 and the corrugated plate 26 is a space 27. This space 27 is also filled with gas, a sound absorbing material, a metal material, etc., as in the first embodiment.
[0031]
According to this reference example , casting and injection molding as in the first embodiment are not required, and all can be realized by plastic working and adhesion, welding, welding, and the like. Therefore, the assemblability is good and it can be manufactured at a lower cost.
[0032]
( Reference Example 2 )
FIG. 5 shows Reference Example 2 of the present invention. In this reference example , an attenuation material 28 is interposed between the flat plate 25 and the corrugated plate 26. As the damping material 28, a resin plate or a resin film is used. Other configurations are the same as those in the first embodiment .
[0033]
According to this reference example , in addition to the sound insulation effect by the space 27, the effect of suppressing the vibration generated in the steps 20, 21 by attenuating by the shear strain generated in the damping material 28 can be obtained.
[0034]
(Embodiment 2)
FIG. 7 shows a second embodiment of the present invention. The present embodiment is another example for forming a space in the side reinforcing portion 13, and a substantially triangular member 31 having a through hole 30 in the central portion, and a flat plate 32 having a substantially triangular shape from both sides. Is attached. The member 31 and the flat plate 32 are made of metal or resin.
[0035]
If comprised in this way, the through-hole 30 will act as space and the transmitted sound in the side part reinforcement part 13 can be reduced. The through hole 30 can be filled with gas or a sound absorbing material. The gas may be air.
[0036]
【The invention's effect】
As described above, according to the present invention, the side reinforcing portion is provided with a space, that is, a closed space , so that transmitted sound and vibration at the step can be reduced, and an escalator with a higher-class feeling is realized. be able to.
[0037]
Further, since the weight of the step does not increase, it is possible to avoid an increase in the size of the escalator drive device.
[Brief description of the drawings]
FIG. 1 is a perspective view of a step of an escalator according to Embodiment 1 of the present invention.
FIG. 2 is a detailed perspective view of a side reinforcing portion of the step shown in FIG.
FIG. 3 is a perspective view of comb teeth formed on the passenger boarding part and the kicking part of the step shown in FIG. 1;
FIG. 4 is a perspective view of comb teeth according to Reference Example 1 of the present invention.
FIG. 5 is a perspective view of comb teeth according to Reference Example 2 of the present invention.
FIG. 6 is a perspective view showing a modified example of comb teeth formed on the passenger riding part and the kicking part.
FIG. 7 is a perspective view of a step according to Embodiment 2 of the present invention.
FIG. 8 is a diagram showing the magnitude of transmitted sound in the vicinity of the passenger boarding part and the side reinforcing part.
FIG. 9 is a diagram showing the magnitude of transmitted sound near the platform.

Claims (5)

A rectangular passenger mounting part on which a passenger is placed, a kick-up part provided at a substantially right angle on one side of the long side of the passenger mounting part, and a substantially right angle provided on both sides of the short side of the passenger mounting part An escalator step comprising: a side reinforcing portion that reinforces the passenger riding portion and the kick-up portion, and a closed space is provided inside the side reinforcing portion. 2. The escalator step according to claim 1, wherein the side reinforcing portion is made of resin and has the closed space at a central portion thereof. 3. The step of the escalator according to claim 1, wherein the side reinforcing portion is formed of a metal or a resin having a through hole in a central portion, and the closed space is formed by closing both end surfaces of the through hole with a plate-like member. An escalator step characterized by being formed. The escalator step according to any one of claims 1 to 3 , wherein the closed space is filled with a gas or a sound absorbing material. Plurality of steps is connected to the chain without the endless, by circulating drive the chain by driving machine, in escalator circulating motion continuous the plurality of steps is, in any one of claims 1 to 3 An escalator provided with the described steps.

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