JP2017014000A - Moving handrail for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving handrail for passenger conveyor which uses a carbon cloth instead of a canvas, omits a wire group embedded in a core body, can improve maintenance inspection workability, can reduce a manufacturing cost, and can reduce a drive power due to reduction in the weight.SOLUTION: A moving handrail for passenger conveyor is formed of a core body which is formed of a thermoplastic elastomer resin, includes a back portion and a pair of ear portions extending in both sides from the back portion, and has a C-shape cross section; and a slider layer provided from one end in a width direction toward the other end thereof provided on the inner peripheral surface of the core body, where the slider layer is configured so that a carbon cloth is joined to the inner peripheral surface of the core body.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a moving handrail of a passenger conveyor such as an escalator or a moving sidewalk.

  A conventional handrail for a passenger conveyor has a core body mainly composed of a thermoplastic elastomer resin and a cross section formed in a substantially C shape, and a plurality of wires in a central portion in the width direction inside the central portion of the core body. It was comprised from the tensile layer comprised by embedding, and the slider layer comprised by joining the canvas produced with synthetic fibers, such as polyester, to the inner peripheral surface of a core (for example, patent document 1). reference).

JP2013-227148A

Conventional handrails for passenger conveyors have been manufactured by continuous extrusion so that the canvas sheet and the wire group are covered with a thermoplastic elastomer resin. At that time, it is necessary to form the wire with great care so that the wires do not overlap or bend, and it takes time for manufacturing management and increases the manufacturing process, resulting in an increase in manufacturing cost. there were.
In addition, since the steel wire is embedded in the core body in order to increase the tensile strength of the moving handrail, there is a problem that the weight of the moving handrail becomes heavy and the electric power for driving the moving handrail increases.
Furthermore, since the bending stress repeatedly acts on the steel wire during operation of the passenger conveyor, the steel wire may be broken by long-term use of the passenger conveyor. Therefore, it is necessary to inspect whether or not the steel wire is broken at the time of maintenance and inspection, and there is a problem that the maintenance and inspection work becomes complicated.

  The present invention has been made to solve such problems, and is embedded in a core body using a carbon cloth having characteristics such as high strength, light weight, wear resistance, and a low coefficient of friction instead of canvas. A moving handrail for passenger conveyors that can improve maintenance and inspection workability, reduce manufacturing costs by reducing manufacturing man-hours, and reduce driving power by reducing weight. The purpose is to obtain.

  The moving handrail of the passenger conveyor according to the present invention is made of a thermoplastic elastomer resin, and has a C-shaped cross section composed of a back portion and a pair of ear portions extending from the back portion to both sides, and an inner peripheral surface of the core body. And a slider layer provided so as to extend from one end to the other in the width direction, and the slider layer is configured by bonding a carbon cloth to the inner peripheral surface of the core body.

  According to the present invention, the tensile strength of the slider layer formed by bonding the carbon cloth to the inner peripheral surface of the core body is increased, and the wire group embedded in the core body can be omitted. Therefore, it is not necessary to inspect whether or not the wire is broken during the maintenance inspection, and the maintenance inspection work can be improved. In addition, since it is not necessary to form the wires while paying close attention so that the wires do not overlap or bend, manufacturing management is facilitated, manufacturing steps are reduced, and manufacturing costs can be reduced. Further, the weight of the moving handrail can be reduced, and the power for driving the moving handrail can be reduced.

It is a schematic diagram which shows the escalator which concerns on Embodiment 1 of this invention. It is II-II arrow sectional drawing of FIG. It is a top view which shows the carbon cloth which comprises the slider layer in the moving handrail of the passenger conveyor which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the moving handrail of the passenger conveyor which concerns on Embodiment 2 of this invention. It is a top view which shows the carbon cloth which comprises the slider layer in the moving handrail of the passenger conveyor which concerns on Embodiment 2 of this invention. It is a top view which shows the carbon cloth which comprises the slider layer in the moving handrail of the passenger conveyor which concerns on Embodiment 3 of this invention. It is a top view which shows the carbon cloth which comprises the slider layer in the moving handrail of the passenger conveyor which concerns on Embodiment 4 of this invention.

Embodiment 1 FIG.
1 is a schematic diagram showing an escalator according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a moving handrail of a passenger conveyor according to Embodiment 1 of the present invention. It is a top view which shows the carbon cloth which comprises a slider layer.

  1 and 2, an escalator as a passenger conveyor includes a main frame 1 spanned between upper and lower floors, a balustrade 2 erected on both sides of the main frame 1, and an upper floor portion in the main frame 1. , A drive sprocket 5 provided on the upper floor portion in the main frame 1 and connected by the drive 3 and the drive chain 4, and an upper step attached coaxially to the drive sprocket 5. An endless shape wound around the sprocket 6, the lower step sprocket 7 provided in the lower floor portion in the main frame 1, and the upper step sprocket 6 and the lower step sprocket 7 and driven by the drive unit 3. A step chain 8, a step 9 fixed to a step shaft (not shown) attached to the step chain 8 at regular intervals, and a T-shaped guide rail 19 provided on the upper part of the balustrade 2 Attached to And an endless moving handrail 20 that moves at the same speed as the step 9 by the moving handrail driving device 10.

  The moving handrail 20 includes an endless core 21 having a substantially C-shaped cross section and a carbon cloth 23 using a known thermoplastic elastomer resin material such as a urethane-based, polystyrene-based, or polyolefin-based material. And a slider layer 22 configured to be joined to the inner peripheral surface of the core body 21. The core body 21 is formed in a C-shaped cross section including a back portion 21a disposed on the upper portion of the guide rail 19 and a pair of ear portions 21b that are curved and extended from both sides in the width direction of the back portion 21a. Has been. The moving handrail 20 is attached to the guide rail 19 so that the ear portion 21b includes guide portions 19a protruding on both sides of the guide rail 19 in the width direction. As shown in FIG. 3, the carbon cloth 23 is produced by plain weaving first warp yarns 24a and first weft yarns 24b made of carbon fibers. The carbon cloth 23 is joined to the inner peripheral surface of the core body 21 so that the length direction of the first warp yarn 24a coincides with the length direction of the core body 21, and from one end of the inner peripheral surface of the core body 21 in the width direction. Arranged to reach the other end.

  In the escalator configured as described above, when the drive machine 3 is driven, the power of the drive machine 3 is transmitted to the drive sprocket 5 via the drive chain 4, and the drive sprocket 5 is rotationally driven. Therefore, the upper step sprocket 6 rotates in conjunction with the rotation of the drive sprocket 5 and the step chain 8 is driven. As a result, the step 9 circulates. Further, the power of the driving sprocket 5 is transmitted to the moving handrail driving device 10, and the moving handrail 20 moves at the same speed as the step 9. Then, a passenger gets on the step 9 from a lower entrance / exit, for example, puts a hand on the moving handrail 20, and moves to an upper floor.

  The moving handrail 20 is driven by the portion of the back portion 21 a of the core body 21 being pulled by the moving handrail driving device 10, and the ear portion 21 b of the core body 21 slides on the guide portion 19 a of the guide rail 19. Therefore, the moving handrail 20 includes a high pulling strength that suppresses the occurrence of elongation due to the pulling of the moving handrail driving device 10, wear resistance that suppresses wear with the guide rail 19, and high sliding that improves slidability with the guide rail 19. Mobility is required.

  In the first embodiment, the carbon cloth 23 having characteristics such as high strength, light weight, wear resistance, and low friction coefficient is obtained by aligning the length direction of the first warp yarn 24a with the length direction of the core body 21. It is joined to the inner peripheral surface of the body 21 and arranged so as to reach from one end to the other end in the width direction of the inner peripheral surface of the core body 21. Therefore, the region of the carbon cloth 23 bonded to the inner peripheral surface of the back portion 21a of the core body 21 bears high tensile strength, and the region of the carbon cloth 23 bonded to the inner peripheral surface of the ear portion 21b of the core body 21 is Responsible for wear resistance and high slidability.

  As described above, according to the first embodiment, the slider layer 22 is configured by joining the carbon cloth 23 to the inner peripheral surface of the core body 21, so that the tensile strength in the length direction of the moving handrail 20 is increased. It is done. Therefore, conventionally, a steel wire embedded in the core body 21 in order to increase the tensile strength can be omitted. Thus, the weight of the moving handrail 20 is reduced, and the sliding resistance between the slider layer 22 and the guide rail 19 is reduced, so that the electric power for driving the moving handrail 20 can be reduced. Moreover, when extruding the movable handrail 20, it is not necessary to pay attention so that the wires do not overlap or bend, making manufacturing management easy, reducing manufacturing steps, and reducing manufacturing costs. . Furthermore, it is not necessary to inspect whether or not the wire is broken at the time of maintenance and inspection, and the maintenance and inspection workability is improved. Furthermore, since the wear resistance of the slider layer 22 is improved, the occurrence of damage due to wear of the moving handrail 20 associated with long-term use can be suppressed.

  In addition, since the length direction of the first warp 24a of the carbon cloth 23 joined to the inner peripheral surface of the core body 21 coincides with the length direction of the core body 21, the tensile strength in the length direction of the moving handrail 20 Is further enhanced.

Embodiment 2. FIG.
4 is a cross-sectional view showing a moving handrail of a passenger conveyor according to Embodiment 2 of the present invention, and FIG. 5 is a plan view showing a carbon cloth constituting a slider layer in the moving handrail of a passenger conveyor according to Embodiment 2 of the present invention. FIG.

  In FIG. 4, the moving handrail 20 </ b> A includes a core body 21 and a slider layer 22 </ b> A configured by joining a carbon cloth 25 to the inner peripheral surface of the core body 21.

  The carbon cloth 25 constituting the slider layer 22A includes a high tensile strength region 25a and low sliding resistance regions 25b provided on both sides in the width direction of the high tensile strength region 25a. As shown in FIG. 5, the high tensile strength region 25a is produced by weaving the first warp yarn 24a and the first weft yarn 24b into a plain weave, that is, the first warp yarn 24a and the first weft yarn 24b alternately. Thereby, in the high tensile strength region 25a, the warp yarn 24a and the weft yarn 24b are firmly combined, so that the tensile strength in the length direction of the slider layer 22A, that is, the carbon cloth 25 is increased. Further, as shown in FIG. 5, the low sliding resistance region 25b includes the first warp 24a and the first warp so that the seven first wefts 24b fly after the first warp 24a once intersects the first weft 24b. It is produced by weaving the weft 24b. Therefore, the low sliding resistance region 25b has fewer contact points between the warp yarns 24a and the weft yarns 24b than the high tensile strength region 25a, so that the tensile strength in the longitudinal direction of the carbon cloth 25 is reduced, but the first warp yarn 24a is exposed. The area increases and the sliding resistance decreases.

  The carbon cloth 25 configured in this way is joined to the inner peripheral surface of the core body 21 with the length direction of the first warp yarn 24a being matched with the length direction of the core body 21, and the inner peripheral surface of the core body 21 It is arrange | positioned so that it may reach from one end of the width direction to the other end. And the high tensile strength area | region 25a is joined to the internal peripheral surface of the back part 21a, and the low sliding resistance area | region 25b is joined to the internal peripheral surface of the ear | edge part 21b.

Also in the second embodiment, since the slider layer 22A is composed of the carbon cloth 25, the same effect as in the first embodiment can be obtained.
According to the second embodiment, the method of weaving the carbon cloth 25 is changed, and the region of the carbon cloth 25 joined to the inner peripheral surface of the back portion 21a of the core body 21 is set as the high tensile strength area 25a. A region of the carbon cloth 25 bonded to the inner peripheral surface of the portion 21b is a low sliding resistance region 25b. Therefore, since the sliding resistance between the slider layer 22A and the guide portion 19a of the guide rail 19 is smaller than that in the first embodiment, the power for driving the moving handrail 20A can be further reduced.

  In the second embodiment, the low sliding resistance region 25b has the first warp 24a and the first weft so that the seven first wefts 24b fly after the first warp 24a once intersects the first weft 24b. 24b is knitted, but the number of the first weft yarns 24b to be blown after the first warp yarn 24a intersects the first weft yarn 24b once is not limited to seven. For example, if the number of the first weft yarns 24b to be blown after the first warp yarns 24a once intersect with the first weft yarns 24b is two or more, the high tensile strength region in which the sliding resistance of the low sliding resistance region 25b is plain-woven It can be made smaller than 25a.

Embodiment 3 FIG.
6 is a plan view showing a carbon cloth constituting a slider layer in a moving handrail of a passenger conveyor according to Embodiment 3 of the present invention.

  In FIG. 6, the carbon cloth 26 constituting the slider layer includes a high tensile strength region 26a and low sliding resistance regions 26b provided on both sides in the width direction of the high tensile strength region 26a. The high tensile strength region 26a is produced by alternately weaving the first warp yarn 24a and the first weft yarn 24b. Thereby, in the high tensile strength region 26a, the tensile strength in the length direction of the carbon cloth 26 is increased. The low sliding resistance region 26b is made of carbon fiber, and the second warp 24c, which is thinner than the first warp 24a, intersects the first weft 24b once and then the seven first wefts 24b are skipped. It is produced by weaving two warp yarns 24c and first weft yarns 24b. Thereby, in the low sliding resistance region 26b, the exposed area of the second warp yarn 24c is increased, and the sliding resistance is decreased. Further, since the low sliding resistance region 26b uses the second warp yarn 24c thinner than the first warp yarn 24a, the flexibility is enhanced.

  The carbon cloth 26 configured in this manner is joined to the inner peripheral surface of the core body 21 with the length direction of the first and second warps 24a, 24c aligned with the length direction of the core body 21. The inner peripheral surface of 21 is disposed so as to extend from one end to the other end in the width direction. The high tensile strength region 26a is joined to the inner peripheral surface of the back portion 21a, and the low sliding resistance region 26b is joined to the inner peripheral surface of the ear portion 21b.

Also in the third embodiment, since the slider layer is composed of the carbon cloth 26, the same effect as in the first embodiment can be obtained.
According to the third embodiment, by changing the weaving method of the carbon cloth 26 and the thickness of the warp, the region of the carbon cloth 26 joined to the inner peripheral surface of the back portion 21a of the core body 21 is set as the high tensile strength region 26a. A region of the carbon cloth 26 joined to the inner peripheral surface of the ear portion 21b of the core body 21 is a low sliding resistance region 26b. Therefore, since the sliding resistance between the slider layer and the guide portion 19a of the guide rail 19 is smaller than that in the first embodiment, the power for driving the moving handrail can be further reduced. Furthermore, since the bendability of the low sliding resistance region 26b is improved, a situation in which the second warp yarn 24c is cut even when bending stress repeatedly acts on the ear portion 21b during operation of the escalator is avoided. .

Embodiment 4 FIG.
7 is a plan view showing a carbon cloth constituting a slider layer in a moving handrail of a passenger conveyor according to Embodiment 4 of the present invention.

  In FIG. 7, the carbon cloth 27 constituting the slider layer includes a high tensile strength region 27a and high bendable regions 27b provided on both sides in the width direction of the high tensile strength region 27a. The high tensile strength region 27a is produced by alternately weaving the first warp yarn 24a and the first weft yarn 24b. Thereby, the tensile strength in the longitudinal direction of the carbon cloth 27 is increased in the high tensile strength region 27a. Further, the highly flexible region 27b is made of carbon fiber and is knitted alternately with the second warp yarn 24c and the first weft yarn 24b which are thinner than the first warp yarn 24a. Since the high warp region 27b uses the second warp yarn 24c thinner than the first warp yarn 24a, the tensile strength in the length direction of the carbon cloth 27 is reduced, but the flexibility is improved. Further, since the high flexibility region 27b uses the carbon cloth 27, it functions as a low sliding resistance region.

  The carbon cloth 27 configured as described above is joined to the inner peripheral surface of the core body 21 with the length direction of the first and second warp yarns 24a and 24c aligned with the length direction of the core body 21. The inner peripheral surface of 21 is disposed so as to extend from one end to the other end in the width direction. The high tensile strength region 27a is joined to the inner peripheral surface of the back portion 21a, and the high bendable region 27b is joined to the inner peripheral surface of the ear portion 21b.

Also in the fourth embodiment, since the slider layer is composed of the carbon cloth 27, the same effect as in the first embodiment can be obtained.
According to the fourth embodiment, the thickness of the carbon cloth 27 is changed to change the area of the carbon cloth 27 joined to the inner peripheral surface of the back portion 21a of the core body 21 to the high tensile strength area 27a. A region of the carbon cloth 27 joined to the inner peripheral surface of the ear portion 21b is a highly flexible region 27b. Therefore, even when bending stress repeatedly acts on the ear portion 21b during operation of the escalator, a situation in which the second warp yarn 24c is cut is avoided.

  In each of the above embodiments, the case where the present invention is applied to an escalator has been described. However, the same effect can be obtained even when applied to a moving sidewalk.

  20, 20A moving handrail, 21 core, 21a back, 21b ear, 22, 22A slider increase, 23 carbon cloth, 24a first warp, 24b first weft, 24c second warp, 25 carbon cloth, 25a high tensile strength Region, 25b Low sliding resistance region, 26 Carbon cloth, 26a High tensile strength region, 26b Low sliding resistance region, 27 Carbon cloth, 27a High tensile strength region, 27b High flexibility region.

Claims (4)

A core body made of a thermoplastic elastomer resin, comprising a back portion and a pair of ear portions extending from the back portion to both sides, and a widthwise direction from one end to the other end of the inner peripheral surface of the core body In a moving handrail of a passenger conveyor provided with a slider layer,
The slider layer is a moving handrail for a passenger conveyor formed by bonding a carbon cloth to the inner peripheral surface of the core.   2. The carbon cloth according to claim 1, wherein the carbon cloth is produced by weaving warp and weft, and is joined to an inner peripheral surface of the core body so that a length direction of the warp yarn coincides with a length direction of the core body. Moving handrail on passenger conveyor.   In the carbon cloth, the number of contact points between the warp yarn and the weft yarn in the region joined to the inner peripheral surface of the back portion is the contact point between the warp yarn and the weft yarn in the region joined to the inner peripheral surface of the ear portion. The moving handrail of the passenger conveyor according to claim 2, wherein the warp is made by weaving the warp and the weft so as to be larger than the number.   The carbon cloth is thicker than the warp knitted in the region joined to the inner peripheral surface of the ear part, and the thickness of the warp knitted in the region joined to the inner peripheral surface of the back part is thicker. The moving handrail of the passenger conveyor described.

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