JP2002012383A - Handrail of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handrail of a passenger conveyor capable of distributing the stress generated when the moving handrail is bent in the longitudinal direction, and improving the safety and the durability thereof. SOLUTION: A canvas layer 2 comprises a first canvas 1a arranged on a back part 5 and a side part 6, and a second canvas 1b arranged only on the back part 5. The width of the second canvas 1b is set to be larger than the width A of an opening part 8 between ears 7, and smaller than the inner width B, and a tensile layer 4 is arranged as close as possible to the first canvas 1a. The stress for deforming the side part 6 of the handrail is reduced, and most of the stress can be received by the tensile layer 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail for moving a passenger conveyor such as an escalator.

[0002]

2. Description of the Related Art An escalator 代表 which is a representative of a passenger conveyor, for example, as described in JP-A-7-228463, has a plurality of steps (that is, steps) which are connected endlessly and run between two entrances. A balustrade erected on the side of these steps, a support member formed along the upper part of the balustrade and curved at each entrance / exit, and a moving handrail attached to the outer surface of each support member. And a moving handrail fitted on the support member and running along the support member in the same direction as the step.

[0003] Such escalators are used in public places,
For example, they are placed in architectural structures such as department stores, supermarkets, shopping centers, airports, railway stations, and buildings, and are particularly used in public places as means of transportation for an unspecified number of people. Is required. And in such an escalator,
For example, a moving handrail described in JP-A-60-161888 has been proposed.

FIG. 6 is a longitudinal sectional view showing a moving handrail of such a conventional escalator. The moving handrail shown in FIG. 6 includes a canvas layer 2 composed of a plurality of canvases 1, a decorative layer 3 disposed to cover the surface of the canvas layer 2, and a canvas layer 2 provided with a tensile strength. It is constituted by laminating three layers with the tensile member layer 4 to be formed.

[0005] The canvas layer 2 is formed by laminating two to five layers of a canvas 1 made of a fabric such as natural fibers such as cotton and chemical fibers such as polyester and nylon. This canvas layer 2
Is curved so that the cross-sectional shape becomes substantially C-shaped, whereby the moving handrail is bent downward from both ends of the back 5 disposed on the balustrade (not shown) and both ends of the back 5. It is formed of a pair of side surfaces 6 extending and ears 7 protruding from the lower ends of the pair of side surfaces 6 in directions approaching each other.

The tensile member layer 4 is made of steel tape or cord, reinforced chemical fiber or glass fiber fabric or cord, and the tensile member layer 4 is formed on the back 5 of the canvas layer 2.
And is disposed near the center of the substantially C-shaped cross section.

It is known that the decorative layer 3 uses various rubbers and plastics having excellent flexibility and tensile strength, and in particular, vulcanized sulfonated polyethylene rubber is generally used. In addition, it is general that vulcanization bonding is carried out between these components and between the layers of the canvas 1 with a rubber-based adhesive.

[0008]

In the above-described conventional escalator moving handrail, an external force is applied from a device for driving the moving handrail or a guide track to compress the moving handrail.
Since the components are subjected to loads such as bending and friction, the components themselves may crack or friction with use, or peel off between the canvas 1 and between different components. In particular, since all the canvases 1 of the canvas layer 2 are arranged in a substantially C-shape, and the tensile body layer 4 is arranged substantially at the center of the substantially C-shaped cross section of the back portion 5, When the moving handrail is bent in the longitudinal direction, stress concentrates from the side surface portion 6 to the ear portion 7, so that the width dimension A of the opening 8 formed between the ear portions 7 changes or cracks in the ear portion 7 are generated. There is a problem that it often occurs. In addition, where the moving handrail enters and exits at the upper and lower entrances of the escalator, the moving handrail is bent in the longitudinal direction, so that the widening of the opening 8 creates a large gap between the handrail and the handrail of the passenger. May be pinched.

The present invention has been made in view of the above-mentioned circumstances in the prior art, and has an object to improve the safety and durability by dispersing a stress generated when a moving handrail is bent in a longitudinal direction. It is an object of the present invention to provide a handrail for moving a passenger conveyor.

[0010]

In order to achieve the above object, the invention according to claim 1 of the present invention provides a canvas layer comprising a plurality of canvases, and a decorative layer disposed so as to cover the surface of the canvas layer. And, three layers of a tensile body layer interposed in the canvas layer are laminated, a back portion arranged on the balustrade, a pair of side portions extending downward from both ends of the back portion, And in a handrail of a passenger conveyor having a pair of ears protruding in a direction approaching each other from the lower ends of the pair of side surfaces and having a substantially C-shaped cross section, the canvas layer is formed on the back and side portions. It is composed of a first canvas arranged and a second canvas arranged only on the back.

According to the first aspect of the present invention, when the moving handrail is bent in the longitudinal direction, the first canvas provided on the back and side portions is bent, so that the side portions are bent. Although the stress that deforms outward acts, the above-mentioned stress does not act even if the second canvas arranged only on the back is bent, so that the stress generated in the moving handrail can be dispersed and between the ears. The amount of change in the width dimension of the opening to be formed can be suppressed, whereby the safety and durability of the moving handrail can be improved.

According to a second aspect of the present invention, in the first aspect, the width of the second canvas is larger than the width of an opening formed between the ears. And it is set as the structure set smaller than the inner width dimension of the said side part.

According to the second aspect of the present invention, the second canvas formed between the ears of the moving handrail is disposed substantially horizontally with respect to the running surface, and the width of the moving handrail is provided. The effect of maintaining the shape in the direction can be enhanced, and no distortion stress is generated when the moving handrail is bent in the longitudinal direction, so that the safety and durability of the moving handrail can be further improved.

According to a third aspect of the present invention, in the first aspect of the present invention, the first canvas is disposed on an inner surface of the canvas layer, and the tension member layer is formed infinitely. It is configured to be arranged close to the first canvas.

In the invention according to claim 3 of the present invention, the movable handrail is generated when the moving handrail is bent in the longitudinal direction by disposing the tensile body layer as close as possible to the first canvas. The tensile layer is subjected to much of the
The stress concentrated on the first canvas from the side portion of the V-shaped cross section to the ear portion can be reduced, and thereby the safety and durability of the moving handrail can be improved.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a third canvas is disposed near the surface of the decorative layer on the back portion and the side portion, and the back portion and the side surface are provided. The rubber member is interposed between the canvases of the section.

In the invention according to the fourth aspect of the present invention, when the moving handrail is bent in the longitudinal direction, a force for pushing the ear portion, that is, a stress for deforming the side portion to the outside acts. The third canvas arranged near the surface of the decorative layer on the side portion increases the rigidity of the side portion, and the rubber member interposed between the back portion and the side portion of the canvas improves the shape retention, so that the ear portion is formed. The amount of change in the width dimension of the opening formed therebetween can be suppressed, whereby the safety and durability of the moving handrail can be improved.

In a passenger conveyor or the like in which the back of a moving handrail is sandwiched and driven by rollers, strain stress is applied to the back of the handrail to deform the decorative layer. Since the applied strain stress is indirectly received and widely dispersed in the inner fabric and the rubber member disposed therebetween, local stress concentration can be suppressed, and thereby the peeling resistance and abrasion resistance of the decorative layer are reduced. Therefore, the safety and durability of the moving handrail can be further improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a moving handrail of a passenger conveyor according to the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a moving handrail of a passenger conveyor according to an embodiment of the present invention, and FIG. 2 is a diagram showing a dimensional change amount of an opening of the moving handrail of the present embodiment. In FIG. 1, the same components as those shown in FIG. 6 described above are denoted by the same reference numerals. That is, 2 is a canvas layer, 3 is a decorative layer,
Reference numeral 4 denotes a tensile body layer, 5 denotes a back portion, 6 denotes a side portion, 7 denotes an ear portion, and 8 denotes an opening.

The moving handrail according to the present embodiment shown in FIG. 1 is different from the handrail shown in FIG. 6 in that the canvas layer 2 is provided with a first canvas 1a disposed on the back portion 5 and the side portion 6 and a back portion. 5 is different from the second canvas 1b arranged only in the fifth embodiment, and the other configurations are basically the same.

The first canvas 1a is disposed on the inner surface of the canvas layer 2, and the tensile body layer 4 is disposed close to the first canvas 1a, the first canvas 1a and the second canvas 1a. It is interposed between the canvases 1b. The width of the second canvas 1b is
A range larger than the width dimension A of the opening 8 formed therebetween and smaller than the inner width dimension B of the side face part 6, for example, 38 to 6
It is set at a predetermined size of 3 mm.

For each of the canvases 1a and 1b, it is preferable to use inexpensive fibers having excellent abrasion resistance and low hygroscopicity, such as nylon and polyester, and it is particularly preferable to use nylon. Each canvas 1a, 1b has a thickness of 0.3 to 1.5.
mm, and the canvas 1a, 1b is preferably vulcanized and bonded between the canvases 1a, 1b with an adhesive rubber, and the fabric constituting each canvas 1a, 1b is thin in the longitudinal direction of the moving handrail. It is easier to bend the fibers in the lengthwise direction of the moving handrail by weaving thick fibers in the lateral direction, and it is difficult to change the shape in the lateral direction, so that the width A of the opening 8 can be maintained and the fabric layer 2 is cracked. From the viewpoint of the effect of preventing The weaving method of the canvases 1a and 1b includes twill weave, plain weave, half mat weave, and the like. In order to improve the wear resistance and low running resistance of the first canvas 1a, plain weave and half mat weave are used. Is preferred. In addition, in order to reduce the stress applied to the canvas layer 2, the number of canvas is preferably two.

The adhesive rubber is conventionally made of chloroprene rubber, but may be made of a material which is strong in bending and can sufficiently maintain the adhesive force between the canvases 1a and 1b, that is, rubber or plastic. The decorative layer 3 is conventionally made of chlorosulfonated polyethylene, but has excellent flex resistance and adhesion to canvas like adhesive rubber, and also has abrasion resistance, weather resistance, ozone resistance, and coloring. Rubber, plastic, and other materials may be used as long as they have excellent properties. In this embodiment, nitrile-butadiene rubber, ethylene-propylene-terpolymer, and a mixed rubber thereof are used for the adhesive rubber and the decorative layer 3.

The tensile member layer 4 has an elongation of the moving handrail of 0.98.
It is a constituent material that can be suppressed to 0.17% or less during kN tension. Conventionally, steel cord is used, but aramid fiber or glass fiber is effective in terms of price. Fiber is used.

In the moving handrail of this embodiment, when the moving handrail is bent in the longitudinal direction, the first canvas 1a disposed on the back portion 5 and the side portion 6 is bent, so that the side portion 6 is bent.
Is applied to the outside, but the above-mentioned stress does not need to be applied due to the bending of the second canvas 1b disposed only on the back portion 5, so that the amount of change in the width A of the opening 8 can be suppressed.

In the moving handrail of this embodiment, the height of the second canvas 1b is set to be larger than the width A of the opening 8 and smaller than the inner width B of the side surface 6. Therefore, the second canvas is disposed substantially horizontally with respect to the running surface, so that the effect of maintaining the shape of the moving handrail in the width direction can be enhanced. No longer occurs.

Further, in the moving handrail of this embodiment, by disposing the tensile member layer 4 as close as possible to the first canvas 1a, much of the stress generated when it is bent in the longitudinal direction is increased. Is applied to the tensile strength layer 4, and the stress concentrated on the first canvas 1 a from the side portion 6 having a substantially C-shaped cross section to the ear portion 7 can be reduced.

In the embodiment configured as described above, the amount of change in the width dimension A of the opening 8 can be suppressed, so that the moving handrail deviates from the track or the passenger's hand or clothes are sandwiched between the balustrade and the moving handrail. In addition, since the stress applied to the canvas layer 2 can be reduced, cracks in the canvas and delamination of each component can be prevented.

Further, in the present embodiment, the first canvas 1a disposed particularly on the back portion 5 and the side portion 6 is subjected to complicated deformation stress, but the tensile body layer 4 receives much of this stress. Thus, stress concentrated on the first canvas 1a can be reduced, so that cracks in the first canvas 1a and peeling between layers can be reliably prevented.

Next, a comparison between the present embodiment and a comparative example (conventional example) will be described with reference to FIG. Here, in Comparative Example 1 shown in FIG. 2A, the second canvas 1b and other third and fourth canvases (not shown) are arranged in a range larger than the inner width B of the moving handrail. For this reason, when the moving handrail is bent in the longitudinal direction, the canvas of the side portion 6 follows due to the strain stress of the canvas of the back portion 5, the ear portion 7 warps, and the width A of the opening 8 changes in a direction in which the width A increases. Since there is a gap between the balustrade guide and a gap between the balustrade and the moving handrail, there is a possibility that a finger or the like may be caught in the gap by the bent portion of the entrance / exit. Further, in Comparative Example 2 shown in FIG. 2A, the second canvas 1b is disposed in a range smaller than the width dimension A of the opening 8 of the moving handrail, and therefore, the second canvas 1b is provided. May lose the effect of maintaining the shape in the width direction of the moving handrail, and the width dimension A of the opening 8 may change in a narrowing direction, and the opening 8 may sandwich the balustrade guide or the balustrade. In addition, the shape of the cords and meshes of the rollers and pulleys for driving the moving handrails and the tensile body layer 4 emerges on the decorative layer 3, and furthermore, only the protruding portions become contaminated and the aesthetics of the moving handrails themselves. There is also a defect that impairs. On the other hand, with respect to these comparative examples 1 and 2, in the present embodiment shown by the solid line in FIG. 3 (c), the width dimension A of the opening 8 hardly changes.
That is, an effect of suppressing a dimensional change of the opening 8 can be obtained.

FIG. 3 is a longitudinal sectional view of a moving handrail of a passenger conveyor according to another embodiment of the present invention, and FIG. 4 shows a force required to push open the opening of the moving handrail of the present embodiment. FIG. 5 and FIG. 5 are diagrams showing the amount of change in the total thickness of the back when the back of the moving handrail of this embodiment is pressed by a roller. In addition,
In FIG. 3, the same components as those shown in FIGS. 1 and 6 are denoted by the same reference numerals.

The moving handrail of the present embodiment shown in FIG. 3 is different from that shown in FIG. 1 in that a third canvas 1c is provided near the surface of the decorative layer 3 on the back portion 5 and the side portion 6. The difference is that a rubber member (not shown) is interposed between the side portion 6 of the canvas layer 2 and the canvas of the back portion 5.

By interposing various rubbers or plastics having excellent flexibility and tensile force between the canvases 1a, 1b and 1c, the first canvas 1a and the third canvas 1 including the canvas thickness are included.
If the thickness between c is 40 to 80% of the total thickness of the side portion 6 at the side portion 6 and 50 to 90% at the back portion 5, it is suitable for practical use.
In this case, it is practically preferable to set the thickness to about 40 to 50% of the total thickness of the side surface portion 6. The above-mentioned various rubbers and plastics need to be strongly bonded to the canvas by vulcanizing the rubber member or using various adhesives.

In the moving handrail according to the present embodiment, a third hand provided near the surface of the decorative layer 3 on the back portion 5 and the side portion 6 is provided.
The rigidity of the side portion 6 is increased by the canvas 1c, and the shape retention is improved by the rubber member interposed between the back portion 5 and the canvas of the side portion 6. Therefore, when the moving handrail is bent in the longitudinal direction, the ear 7 , That is, a stress acting to deform the side surface portion 6 outwardly, but the amount of change in the width dimension A of the opening 8 formed between the ear portions 7 can be suppressed.

In the moving handrail according to this embodiment, the amount of canvas occupying the entire moving handrail is reduced by a rubber member or the like interposed between the canvases of the back portion 5 and the side portion 6, so that the material cost can be reduced. At the same time, it is possible to suppress a change in the inner width dimension due to moisture absorption of the canvas.

In a passenger conveyor or the like in which the back 5 of the moving handrail is sandwiched and driven by a pressing roller (not shown), a strain stress is applied to the back 5 to deform the decorative layer 3. Since the provided canvas indirectly receives the strain stress received by the decorative layer 3 and widely disperses it into the inner canvas 1c and the rubber disposed therebetween, local stress concentration can be suppressed. Thereby, the running resistance when driven by the pinching roller can be reduced, and the peeling resistance and wear resistance of the decorative layer 3 can be improved. Further, when the passenger conveyor is stopped, such as at night, the portion supported by the squeezing rollers is less likely to be deformed. Thus, the durability including the material cost and the aesthetic appearance of the moving handrail can be further improved.

In the embodiment configured as described above, the amount of change in the width dimension A of the opening 8 can be suppressed while increasing the rigidity of the side surface portion 6 of the moving handrail, so that the durability of the moving handrail can be improved and the moving handrail can be improved. Can be further suppressed from deviating from the track and the passenger's hand, clothes, etc. being sandwiched between the balustrade and the moving handrail.

In the present embodiment, the force required to push open the opening 8 of the moving handrail changes as shown in FIG. Here, the solid line (a) shows the transition of the external force that pushes the ear 7 open. When the interlayer thickness C between the side portions 6 of the first canvas 1a and the third canvas 1c increases, the ear 7 pushes the ear 7. The external force required to open increases. The broken line in (a) indicates the amount of change in the size of the opening during bending, and the first canvas 1
By increasing the interlayer thickness C between the a and the third canvas 1c, a change in the width dimension A of the opening 8 when the moving handrail is bent in the longitudinal direction to increase the rigidity of the side surface 6 can be reduced.

Further, in the present embodiment, the change in the total thickness of the back when the back 5 of the moving handrail is pressed by the roller changes as shown in FIG. Here, the solid line (c) indicates the amount of change in the total thickness of the back when the back 5 is pressed by a roller, and indicates the interlayer thickness D between the back 5 of the first canvas 1a and the third canvas 1c. When it increases, the change in the total thickness E of the back when the back 5 is pressed by the roller can be reduced.

[0041]

As described above, the first aspect of the present invention is as described above.
According to the invention, when the moving handrail is bent in the longitudinal direction, the amount of change in the width dimension of the opening formed between the ears can be suppressed, so that the moving handrail deviates from the track, or between the balustrade and the moving handrail. Since it is possible to prevent the passenger's hand or clothes from being caught, and to reduce the stress applied to the canvas layer, it is possible to prevent canvas cracks and delamination of each component, thereby improving the safety and durability of the moving handrail. This has the effect.

In the invention according to claim 2 of the present invention, the effect of maintaining the shape of the moving handrail in the width direction by the second canvas disposed on the back is enhanced, and the moving handrail is bent in the longitudinal direction. In this case, the generation of strain stress can be suppressed, and thus there is an effect that the safety and durability of the moving handrail can be further improved.

In the invention according to claim 3 of the present invention, since the tensile stress applied to the tensile strength layer receives much of the deformation stress concentrated on the first canvas, the stress can be reduced to the above stress. Also, peeling between the layers can be reliably prevented. Also from this point, there is an effect that the safety and durability of the moving handrail can be improved.

According to the invention of claim 4 of the present invention, the third canvas arranged near the surface of the decorative layer on the back and the side increases the rigidity of the side and the space between the canvas on the back and the side. Since the interposed rubber member improves the shape retention, the amount of change in the width of the opening formed between the ears when the moving handrail is bent in the longitudinal direction can be suppressed, and the passenger can be moved between the balustrade and the moving handrail. The hand or clothes can be prevented from being pinched, and the moving handrail is more difficult to come off the track. Therefore, there is an effect that the safety and durability of the moving handrail can be further improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a moving handrail of a passenger conveyor according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a dimensional change amount of an opening of a moving handrail according to the present embodiment.

FIG. 3 is a longitudinal sectional view of a moving handrail of a passenger conveyor according to another embodiment of the present invention.

FIG. 4 is a diagram showing a force required when trying to push open the opening of the moving handrail according to the embodiment.

FIG. 5 is a diagram illustrating a change amount of a total thickness of the back when the back of the moving handrail of the embodiment is pressed by a roller.

FIG. 6 is a longitudinal sectional view showing a moving handrail of a conventional escalator.

[Explanation of symbols]

 1a first canvas 1b second canvas 1c third canvas 2 canvas layer 3 decorative layer 4 tensile layer 5 back 6 side 7 ear 8 opening

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tetsuya Kanai 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Inside the Hitachi Building System Co., Ltd. (72) Tatsuya Shinya 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Ltd. (72) Inventor Kiyoshi Naganuma 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Incorporated Hitachi Corporation (72) Inventor Koji Inoue 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi, Ltd. Inside the building system (72) Inventor Fushi Sekiya 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside the Hitachi Building System Co., Ltd. (72) Inventor Yukihiro Yamaguchi 1070 Ma, Hitachinaka-shi, Ibaraki Pref. Hitachi, Ltd. Building Systems Group, Hitachi, Ltd. Mito Building System Division (72) Inventor Koichi Hatayama Ibaraki Pref. City Sukegawa-cho 3-chome No. 1 Hitachi Cable, Ltd. in the (72) inventor Mamoru Shiina Hitachi City, Ibaraki Prefecture Sukegawa-cho 3-chome No. 1 Hitachi Electric Cable Co., Ltd. in the F-term (reference) 3F321 AA10 CF06

Claims (4)

[Claims] 1. A three-layer structure comprising: a canvas layer composed of a plurality of canvases; a decorative layer disposed to cover the surface of the canvas layer; and a tensile member layer interposed between the canvas layers. A back portion arranged on the railing of the passenger conveyor, a pair of side portions extending downward from both ends of the back portion, and a pair of ear portions projecting from the lower ends of the pair of side portions toward each other. A moving handrail of a passenger conveyor having a substantially C-shaped cross-section including the canvas layer, wherein the canvas layer is disposed on the back portion and the side portion.
A moving handrail of a passenger conveyor, comprising a canvas and a second canvas disposed only on the back. 2. The handrail of a passenger conveyor according to claim 1, wherein a width of the second canvas is larger than a width of an opening formed between the ears, and an inner width of the side portion. A handrail for moving a passenger conveyor, which is set smaller than the dimensions. 3. The handrail of a passenger conveyor according to claim 1, wherein the first canvas is disposed on an inner surface of the canvas layer, and the tensile member layer is brought as close as possible to the first canvas. A handrail for moving a passenger conveyor, characterized by being arranged in a row. 4. The handrail of a passenger conveyor according to claim 1, further comprising a third canvas disposed near the surface of the decorative layer on the back and the side, and a rubber member between the canvas on the back and the side. A handrail for moving a passenger conveyor, wherein a handrail is provided.