JP2012224458A - Moving handrail for man conveyor, handrail for the man conveyor, and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving handrail for a man conveyor which can form part of an inner face of the moving handrail by use of a fiber which has an extremely small coefficient of friction and further prevents deformation upon forming to enhance the productivity drastically.SOLUTION: A moving handrail 8 includes a body resin part 16, sailcloth 18, and sailcloth 19. The body resin part 16 shows a C shape in lateral cross section, and is formed in an endless state. The sailcloth 18 is provided in the body resin part 16 and disposed along a longitudinal direction of the body resin part 16 on an inner face of one side part of the body resin part 16. The sailcloth 19 is provided in the body resin part 16 and disposed along the longitudinal direction of the body resin part 16 at given intervals with the sailcloth 18 on an inner face of the other side part of the body resin part 16. The sailcloth 18 and sailcloth 19 are integrally formed with resins constituting the body resin part 16.

Description

  The present invention relates to a moving handrail used on a man conveyor such as an escalator or a moving sidewalk, a man conveyor handrail intended for use on a man conveyor, and a manufacturing method thereof.

  In a man conveyor such as an escalator or a moving sidewalk, an endless moving handrail having a C-shaped cross section is generally used. The moving handrail is gripped for safety by passengers on the step. The moving handrail is driven to synchronize with the steps, and its traveling direction is guided by the guide rail.

  In a man conveyor, in general, driving of a moving handrail and traveling guidance are performed via its inner surface (hereinafter also simply referred to as “inner surface”). For this reason, the moving handrail has a high friction characteristic (friction coefficient) for generating sufficient driving force on its inner surface and a low friction characteristic (friction coefficient) for reducing sliding resistance during travel. It is required to have both functions.

  In view of such circumstances, as a prior art, a material that uses fluororesin fiber for the canvas forming the inner surface of the moving handrail and greatly reduces the traveling resistance (sliding resistance during traveling) of the moving handrail has been proposed. (For example, see Patent Documents 1 and 2).

JP 2010-105801 A JP 2011-42413 A

  Since the fluororesin fiber has an extremely small friction coefficient, it can be an effective means for reducing the running resistance of the moving handrail, but there is a problem that it is extremely difficult to bond the moving handrail to the main body resin.

For this reason, in what is described in Patent Document 1, by fixing a portion of the main body resin from the inner surface of the canvas through a large number of through holes formed in the canvas, the canvas can be fixed (and High friction part).
Moreover, in the thing of patent document 2, the sliding cloth which consists of a fluororesin fiber is woven in a base cloth, a sliding cloth is fixed, and main body resin is put between the fibers of the base cloth woven coarsely than a sliding cloth. The base fabric is fixed to the main body resin by infiltration.

  In the thing of patent document 1 and 2, since the hole was formed in the center part of the canvas, or the fiber of the center part was coarsely woven, the canvas was bent (twisted from the center part) when forming the handrail. ), There is a problem that the moving handrail cannot be maintained in a normal shape.

Note that Japanese Patent Publication No. 2009-538804 discloses that a sliding layer is formed by attaching a thin film to the inner surfaces of both sides of a moving handrail (see FIG. 2). However, when a canvas is formed using a fiber having a very small friction coefficient such as a fluororesin fiber, the canvas cannot be pasted on the main body resin of the moving handrail later. For this reason, in the thing of Japanese translations of PCT publication No. 2009-535804 gazette, the inner surface (part of) of a moving handrail was not able to be formed using a fluororesin fiber etc.
In the case of the one described in JP-T-2009-538804, since a thin film is attached to the curved inner surface of the moving handrail, the workability is remarkably deteriorated and the attachment is neatly performed so as not to increase the sliding resistance during traveling. It was also difficult.

  The present invention has been made to solve the above-described problems. The object of the present invention is to form a part of the inner surface of the moving handrail using a fiber having a very small friction coefficient, and to prevent the deformation of the molding at the time of molding. It is to provide a moving handrail for a man conveyor that can prevent and greatly improve manufacturability, and a man hand conveyor handrail having such a function and a manufacturing method thereof.

  The moving handrail of the man conveyor according to the present invention has a C-shaped cross section and is provided with an endless main body resin portion and a main body resin portion. The first canvas arranged along the length of the portion and the main body resin portion, the inner surface of the other side portion of the main body resin portion has a predetermined interval between the first canvas and the main body resin portion. A second canvas disposed along the longitudinal direction, and the first canvas and the second canvas are integrally formed with a resin constituting the main body resin portion.

  A handrail for a man conveyor according to the present invention is provided in a long main body resin portion having a C-shaped cross section and a main body resin portion, and on the inner surface of one side portion of the main body resin portion, along the length of the main body resin portion. The first canvas disposed in the main body resin portion, and disposed on the inner surface of the other side portion of the main body resin portion along the length of the main body resin portion with a predetermined distance from the first canvas. The first canvas and the second canvas are integrally formed with the resin constituting the main body resin portion.

  The method for manufacturing a handrail for a man conveyor according to the present invention includes a step of preparing two long canvases, an extrusion integral molding of the two canvases and a predetermined resin, and one canvas on the inner surface of one side. The other canvas is formed on the inner surface of the other side portion, and a handrail main body having a C-shaped cross section is formed.

  According to the present invention, a part of the inner surface of the moving handrail can be formed using fibers having a very small coefficient of friction, and further, the shape can be prevented from being lost during molding, thereby greatly improving the productivity. become able to.

It is a side view which shows the whole structure of a man conveyor. It is sectional drawing which shows the moving handrail of the man conveyor in Embodiment 1 of this invention. It is sectional drawing which shows the moving handrail of the man conveyor in Embodiment 1 of this invention. It is sectional drawing which shows the principal part of the moving handrail of the man conveyor in Embodiment 1 of this invention. It is FIG. 4 equivalent view which shows the other structure of the moving handrail of the man conveyor in Embodiment 1 of this invention. It is sectional drawing which shows the moving handrail of the man conveyor in Embodiment 2 of this invention. It is sectional drawing which shows the moving handrail of the man conveyor in Embodiment 3 of this invention. It is sectional drawing which shows the structure of the canvas in Embodiment 3 of this invention.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a side view showing the overall configuration of the man conveyor. Below, the structure of the escalator utilized in the case of the movement between an upper and lower floor is demonstrated concretely. Description of other examples of man conveyors, such as moving walkways, is omitted.

  In FIG. 1, reference numeral 1 denotes an escalator truss spanned between upper and lower floors. The truss 1 supports the escalator's own weight and load capacity. 2 is a step on which the passenger rides when moving between the upper and lower floors. The step 2 is connected to an endless step chain 3. 4 is a step drive sprocket around which the step chain 3 is wound, 5 is a drive motor for driving the step drive sprocket 4 and the like, and 6 is a step drive sprocket through which the output of the drive motor 5 is decelerated. A speed reducer that rotates 4, and a control panel 7 that controls operation of the escalator, such as control of the drive motor 5.

  Reference numeral 8 denotes a moving handrail for a passenger who gets on and off the step 2 or a passenger on the step 2 to grab. The moving handrail 8 has an endless shape and is driven to synchronize with the step 2. The upper side of the moving handrail 8 moves along the upper end of the balustrade 9 erected on both sides of the step 2. Further, the moving handrail 8 is inverted up and down at each entrance of the escalator, and the lower side is disposed in a skirt guard or the like provided on both sides of the step 2.

  Reference numeral 10 denotes a handrail driving device for driving the moving handrail 8. The handrail drive device 10 drives the moving handrail 8 by a friction drive system including a drive roller 11 and a pressure roller 12 (both not shown in FIG. 1). That is, the handrail drive device 10 sandwiches the moving handrail 8 from above and below (front and back) by the driving roller 11 and the pressure roller 12, thereby rotating the driving roller 11 in this sandwiched state, The moving handrail 8 is driven using the frictional force. During driving, the driving roller 11 contacts the inner surface of the moving handrail 8, and the pressure roller 12 contacts the outer surface of the moving handrail 8 (the gripping surface gripped by the passenger).

  13 is a handrail driving sprocket provided coaxially with the step driving sprocket 4, and 14 is a handrail chain for transmitting the rotational force of the handrail driving sprocket 13 to the handrail driving device 10. When the handrail drive sprocket 13 rotates together with the step drive sprocket 4 by the drive force of the drive motor 5, the drive force is transmitted to the handrail drive device 10 via the handrail chain 14. The moving handrail 8 is driven by the handrail driving device 10 and circulates between the upper and lower entrances and exits in synchronization with the steps 2.

Next, the moving handrail 8 will be specifically described.
2 and 3 are sectional views showing the moving handrail of the man conveyor in the first embodiment of the present invention. 2 shows an AA arrow view of FIG. 1, and FIG. 3 shows a BB arrow view of FIG. FIG. 4 is a cross-sectional view showing a main part of the moving handrail of the man conveyor according to the first embodiment of the present invention.

  The moving handrail 8 has a substantially C-shaped transverse (short direction) cross section, and driving by the handrail driving device 10 and traveling guidance by the guide rail 15 are performed via the inner surface. That is, the moving handrail 8 has a high friction characteristic (friction coefficient) for generating a sufficient driving force on its inner surface and a traveling resistance (sliding resistance with the guide rail 15) during traveling. Both functions with low friction properties (friction coefficient) are required.

The main part of the moving handrail 8 in the present embodiment is constituted by the main body resin portion 16, the tensile body 17, and the canvases 18 and 19.
The main body resin portion 16 constitutes a main portion of the moving handrail 8 and has a substantially C-shaped cross section and is formed in an endless shape as a whole. The main body resin portion 16 is made of, for example, a resin member such as rubber or polyurethane. In addition, in FIG. 2 etc., the case where the main body resin part 16 consists of one type of elastic body is shown as an example. However, the configuration of the main body resin portion 16 is not limited to this, and the main body resin portion 16 may be configured by a plurality of resin layers in accordance with the function to be given to the moving handrail 8 or the like.

  The tensile body 17 is for imparting a predetermined tensile strength to the moving handrail 8 and preventing its extension. The tensile body 17 is made of, for example, a wire made of steel and is provided inside the main body resin portion 16 along the length thereof. The tensile body 17 may be made of steel tape or the like.

  The canvases 18 and 19 are entirely (or at least the surface thereof) made of woven fabric (woven fabric) or non-woven fabric woven with fibers having extremely low friction characteristics such as fluororesin fibers. The canvases 18 and 19 are firmly fixed to the inner surface of the main body resin portion 16 by being molded (integrated) simultaneously with the resin constituting the main body resin portion 16.

  Specifically, one canvas 18 is provided on one side portion of the main body resin portion 16, and is disposed on the inner surface of one side portion of the main body resin portion 16 along the length thereof. One side edge portion 18a of the canvas 18 is curved, for example, in a U shape (or U shape), and an end thereof is embedded in the inside of the main body resin portion 16 (inside the resin) along its length. Yes.

  The other canvas 19 has a symmetric configuration with the canvas 18. That is, the canvas 19 is provided on the other side portion of the main body resin portion 16, and is disposed along the length of the inner surface of the other side portion of the main body resin portion 16. One side edge portion 19a of the canvas 19 is curved, for example, in a U shape (or U shape), and an end thereof is embedded in the inside of the main body resin portion 16 (inside the resin) along its length. Yes.

  A predetermined interval is formed between the canvas 18 and the canvas 19 along the length of the main body resin portion 16. Therefore, a part of the main body resin portion 16 (resin constituting the main body resin portion 16) is exposed between the other side edge portion 18b of the canvas 18 and the other side edge portion 19b of the canvas 19. The driving roller 11 of the handrail driving device 10 drives the moving handrail 8 without contacting the surfaces of the canvases 18 and 19 and in contact with the exposed portion (exposed inner surface) of the main body resin portion 16.

  In manufacturing the movable handrail 8, first, a long handrail body having the same configuration as that of the movable handrail 8 shown in FIG. 2 is manufactured, then the handrail body is cut to a predetermined length and both ends thereof are connected. Thus, the endless (annular) moving handrail 8 is completed.

  For example, when manufacturing the handrail main body by extrusion molding, first, the tensile body 17 and the canvases 18 and 19 having the above-described configuration are prepared. Then, extrusion is integrally formed with a predetermined resin so that the canvas 18 is arranged on the inner surface of one side and the canvas 19 is arranged on the inner surface of the other side, and a long member having a cross section shown in FIG. Form. Thereafter, molding is carried out once or a plurality of times as required, and the outer surface of the member shown in FIG. 4 is covered with resin to complete the C-shaped main body resin portion 16 (handrail main body) shown in FIG. Let

  Since the canvases 18 and 19 are composed of a woven or non-woven fabric of predetermined fibers, the dimensions thereof change somewhat due to tension and heat during molding. For this reason, the canvases 18 and 19 are positioned on the basis of the respective side edges 18a and 19a during the integral molding by the extrusion. With such a configuration, the canvases 18 and 19 are appropriately arranged on the inner surface of the one side portion and the inner surface of the other side portion of the main body resin portion 16 without damaging the shape of the handrail main body (moving handrail 8). Can do.

  Due to the dimensional change at the time of molding, the canvases 18 and 19 have the other side edge portions 18b and 19b moved to the anti-center portion side of the handrail body. However, since the canvases 18 and 19 are not integrated, the shape of the handrail main body is not impaired without bending during molding. It is also effective to set the dimensions of the canvases 18 and 19 in advance by considering the amount of contraction. Further, the fluororesin fiber having a small heat shrinkage can be a particularly effective means as the fiber constituting the canvas 18 and 19.

  In the case of the moving handrail 8 (handrail main body) having the above configuration, the resin constituting the main body resin portion 16 enters between the resins constituting the canvas 18 and the canvas 19, and the canvas 18 and the canvas 19 are firmly attached to the main body resin portion 16. Can be fixed to. As shown in FIGS. 2 to 4, if the inner surface of the main body resin portion 16 disposed between the canvases 18 and 19 is disposed flush with the surfaces of the canvases 18 and 19, the other side edges of the canvases 18 and 19. The portions 18b and 19b can be more firmly fixed to the main body resin portion 16.

  FIG. 5 is a view corresponding to FIG. 4 showing another configuration of the moving handrail of the man conveyor according to the first embodiment of the present invention. In the case shown in FIG. 5, the other side edges 18 b and 19 b of the canvases 18 and 19 also have their ends along the length of the inside of the main body resin part 16 (inside the resin), similarly to the side edges 18 a and 19 a. Embedded. With this configuration, it is possible to reliably prevent the canvases 18 and 19 from being peeled off from the other side edge portions 18b and 19b.

Embodiment 2. FIG.
FIG. 6 is a cross-sectional view showing a moving handrail of a man conveyor in Embodiment 2 of the present invention. FIG. 6 corresponds to an AA arrow view of FIG. 1 in the present embodiment.

  In FIG. 6, 20 is a rod-shaped reinforcing material provided on one side of the main body resin portion 16, and 21 is a rod-shaped reinforcing material provided on the other side of the main body resin portion 16. The reinforcing members 20 and 21 are, for example, materials (nylon, polyester, urethane) that are softened and melted at the temperature at which the main body of the handrail is molded and integrated with the resin and the canvases 18 and 19 constituting the main body resin portion 16. Consists of. The reinforcing members 20 and 21 may be wires or the like.

  One side edge portion 18 a of the canvas 18 is curved in a U shape (or U shape) so as to surround (a part of) the reinforcing material 20 over the length of the main body resin portion 16. Similarly, the side edge 19a of the canvas 19 is also curved in a U-shape (or U-shape) so as to surround the reinforcing material 21 (a part thereof) over the length of the main body resin portion 16.

  As described above, since the canvases 18 and 19 are made of woven or non-woven fabric of predetermined fibers, the dimensions thereof are slightly changed by the tension and heat at the time of molding. For this reason, in the present embodiment, at the time of integral molding by extrusion, the canvas 18 is positioned by pressing its one side edge 18a against the reinforcing material 20, and for the canvas 19, the one side edge 19a is used as the reinforcing material. Press to 21 to perform positioning. And in this state, integral molding by extrusion is performed together with the reinforcing members 20 and 21 to form a long member having a cross section corresponding to FIG. With such a configuration, the shape of each side edge 18a and 19a of the canvas 18 and 19 can always be stabilized during extrusion molding, and the shape of the handrail body (moving handrail 8) can be surely damaged. Can be prevented.

  The rest of the configuration is the same as that of the first embodiment.

Embodiment 3 FIG.
FIG. 7 is a cross-sectional view showing a moving handrail of a man conveyor in Embodiment 3 of the present invention. 7 corresponds to the AA arrow view of FIG. 1 in the present embodiment. FIG. 8 is a cross-sectional view showing the configuration of the canvas according to Embodiment 3 of the present invention.

In the present embodiment, the canvases 18 and 19 each have a two-layer structure of a base cloth 22 and a sliding cloth 23.
The base fabric 22 constitutes each lower layer portion of the canvas 18 and 19. That is, the base fabric 22 is provided on the inner surface of the main body resin portion 16 and is disposed along the length of the main body resin portion 16. The base fabric 22 is for imparting various performances such as an increase in rigidity and a reduction in shrinkage to the canvases 18 and 19, for example. Since the base fabric 22 is directly fixed to the main body resin portion 16, the base fabric 22 may be composed of fibers having excellent adhesiveness with the resin constituting the main body resin portion 16. The base fabric 22 is made of a woven fabric using fibers such as nylon, polyester, and urethane, for example.

  The sliding cloth 23 constitutes each upper layer portion of the canvas 18 and 19. The sliding cloth 23 is for reducing sliding resistance with the guide rail 15. For this reason, the sliding cloth 23 has a lower friction characteristic than the base cloth 22, and is composed of a woven cloth using fibers having an extremely low friction coefficient such as a fluororesin fiber. The sliding cloth 23 is provided on the base cloth 22 so as to cover the surface of the base cloth 22, and forms the surfaces of the canvases 18 and 19. The sliding cloth 23 is firmly fixed to the base cloth 22 by, for example, the fibers being woven into the fibers of the base cloth 22.

With such a configuration, various functions required for the canvases 18 and 19, for example, functions such as adhesion to the resin constituting the main body resin portion 16, low friction characteristics of the surface, overall high rigidity and low shrinkage, etc. Can be appropriately applied to the base cloth 22 and the sliding cloth 23.
Others have the same configuration as in the first or second embodiment.

DESCRIPTION OF SYMBOLS 1 Truss 2 Step 3 Step chain 4 Step drive sprocket 5 Drive motor 6 Reducer 7 Control panel 8 Moving handrail 9 Railing 10 Handrail drive device 11 Drive roller 12 Pressure roller 13 Handrail drive sprocket 14 Handrail chain 15 Guide rail 16 Main body Resin part 17 Tensile body 18, 19 Canvas 18a, 19a One side edge part 18b, 19b Other side edge part 20, 21 Reinforcement material 22 Base cloth 23 Sliding cloth

Claims (10)

A main body resin portion having a C-shaped cross section and formed in an endless shape,
A first canvas provided in the main body resin portion, and disposed on an inner surface of one side portion of the main body resin portion along a length of the main body resin portion;
A second canvas provided in the main body resin portion and arranged along the length of the main body resin portion with a predetermined interval between the inner surface of the other side portion of the main body resin portion and the first canvas When,
With
The first canvas and the second canvas are moving handrails of a man conveyor formed integrally with a resin constituting the main body resin portion.   The moving handrail of the man conveyor according to claim 1, wherein both side edges of the first canvas and the second canvas are embedded in the main body resin portion along the length of the main body resin portion.   2. The main body resin portion according to claim 1, wherein an inner surface disposed between the first canvas and the second canvas is disposed flush with each surface of the first canvas and the second canvas. A handrail on the man conveyor. A bar-shaped reinforcing material provided on one side and the other side of the main body resin portion, respectively, and disposed along the length of the main body resin portion;
With
The first canvas is curved so that one side edge portion surrounds one of the reinforcing members along the length of the main body resin portion,
The movement of the man conveyor according to any one of claims 1 to 3, wherein the second canvas is curved so that one side edge portion surrounds the other reinforcing member along a length of the main body resin portion. handrail. The first canvas and the second canvas are:
A base cloth provided along the length of the inner surface of the main body resin portion;
A sliding cloth provided on the base cloth so as to cover the surface of the base cloth, and having a friction characteristic lower than that of the base cloth;
The moving handrail of the man conveyor according to any one of claims 1 to 4, comprising:   The moving handrail of the man conveyor according to any one of claims 1 to 5, wherein at least surfaces of the first canvas and the second canvas are made of a woven or non-woven fabric of fluororesin fibers. A long main body resin portion having a C-shaped cross section;
A first canvas provided in the main body resin portion, and disposed on an inner surface of one side portion of the main body resin portion along a length of the main body resin portion;
A second canvas provided in the main body resin portion and arranged along the length of the main body resin portion with a predetermined interval between the inner surface of the other side portion of the main body resin portion and the first canvas When,
With
The first canvas and the second canvas are handrails for a man conveyor which are integrally formed with a resin constituting the main body resin portion. Preparing two long canvases,
A handrail having a C-shaped cross section in which the two canvases and a predetermined resin are integrally formed by extrusion and one canvas is disposed on the inner surface of one side and the other canvas is disposed on the inner surface of the other side. Molding the body;
Manufacturing method of handrail for man conveyor provided with   At the time of extrusion integral molding, the one canvas is positioned with reference to one side edge disposed on one side of the handrail body, and the other canvas is disposed on the other side of the handrail body. The manufacturing method of the handrail for man conveyors of Claim 8 positioned based on a side edge part.   10. The man conveyor according to claim 8, wherein each of the canvases is integrally formed with the predetermined resin together with the reinforcing material in a state in which each side edge portion is pressed against a rod-shaped reinforcing material. Handrail manufacturing method.

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