JPH09240975A - Handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively reduce an extending-contracting quantity, a bending angle and bending force of a collar part, and improve bending resistance and durability of a handrail by laminating corrugated canvases on a core body of the collar part in the handrail formed by adhering decorative rubber on the C-shaped core body formed by laminating plural canvases. SOLUTION: A handrail 1 as a moving handrail arranged on both sides of an escalator and a moving sidewalk is formed by adhering a decorative rubber layer 9 on a C-shaped canvas laminated body 7, and bead rubber 11 is embedded in a central part of a collar part 10 of a core body 7 made by laminating general canvases impregnated with plural rubber cement in an almost C shape. In this case, the core body of the collar part 10 is made by laminating corrugated canvas 14, and a cushion rubber layer 12 excellent in bending resistance is interposed between the bead rubber layer 11 and a canvas layer 14. Therefore, an extending-contracting quantity, a bending angle and bending force of the collar part applied at operation time of the handrail 1 are reduced, and bending resistance and durability of the handrail 1 can be improved.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a handrail. More specifically, the present invention relates to a novel handrail used as a moving handrail such as an escalator or a moving walkway.

[0002]

2. Description of the Related Art The spread of escalators and moving walkways in recent years has been remarkable.

Handrails are installed as moving handrails on both sides of the escalator and the moving sidewalk.

Generally, this handrail is used while being repeatedly bent for several years to several decades after being installed on an escalator or a moving walkway.

FIG. 2 is a side view showing the running track of the handrail installed on the escalator.

In FIG. 2, 1 is a hand rail, 2 is an upper end guide, 31, 32, 33 and 34 are guide rollers, 4 is a drive roller, 5 is an intermediate guide, and 6 is a lower end guide.

In FIG. 2, the handrail 1 travels endlessly while repeatedly undergoing the following forward and reverse bends.

[0008] Together with passengers (not shown), the escalator goes up from the upper lower part to the upper upper part, and the upper end guide 2
While traveling in the right direction, drive to the lower upper part of the escalator.

Next, the plurality of guide rollers 31 are subjected to reverse bending.

Next, the drive roller 4 undergoes forward bending.

Next, the guide roller 32 is subjected to reverse bending.

Next, the guide roller 33 is subjected to reverse bending.

Next, the intermediate guide 5 is subjected to positive bending.

Next, the guide roller 34 is subjected to reverse bending.

Next, while traveling at the lower end guide 6, the vehicle travels to the upper lower part of the escalator while undergoing forward bending.

(Hereinafter, this is repeated) FIG. 3 is a perspective explanatory view of the handrail 1 that has undergone forward bending, and FIG. 3 is a perspective explanatory view of the handrail 1 that has undergone reverse bending.

A handrail of this type is made by adhering a decorative rubber layer on a C-shaped canvas laminate.

FIG. 5 is a sectional explanatory view of such a conventional handrail.

In FIG. 5, 7 is a core, 8 is a tensile body, 9 is surface decorative rubber, 10 is a jaw, and 11 is beet rubber embedded in the jaw.

Here, the core body 7 is made by laminating a plurality of general canvases impregnated with rubber glue in a substantially C-shape. It is bent so as to wrap the beet rubber embedded in the center of the portion 10. Also here, the tension body 8
As the cord, a steel cord, a steel tape cord, a polyester fiber cord, a polyamide fiber cord, etc. are used, and these are embedded between the C-shaped laminated canvases corresponding to the back of the handrail 1. FIG. 6 is an enlarged cross-sectional view of the conventional handrail shown in FIG.

In FIG. 6, 9 is a decorative rubber, 11 is a beat rubber, 12 is a cushion rubber, and 13 is a laminated canvas core.

As can be seen from FIGS. 5 and 6, the surface decorative rubber 9, the beat rubber 11, the cushion rubber 12 and the general canvas laminated core 13 are all integrally formed linearly in the longitudinal direction of the handrail 1. There is.

When the handrail is mounted on the escalator for operation as described above, the handrail is repeatedly subjected to forward bending, reverse bending, extension, contraction, compression, deformation and the like.

Such normal bending, reverse bending, elongation, contraction,
It is widely known that the most severely subjected to bending, compression, deformation and the like is the handrail jaw 10 structurally.

On the other hand, as described above, the surface decorative rubber 9, the beat rubber 11, the cushion rubber 12, and the general canvas laminated core 13 are all integrally formed linearly in the longitudinal direction of the handrail 1. The collar portion 10 of the handrail is most subject to fatigue deterioration due to bending, expansion, contraction, bending, compression, deformation and the like.

For this reason, wear, cracks, breakage, etc. of the general canvas laminated core 13 are most often generated in the collar portion 10.

On the other hand, when a flexible synthetic fiber canvas having a large mechanical strength is used in place of the cotton fiber which is usually used as the structural fabric of the core body 7, the flexible synthetic fiber canvas and other constituent materials are used. Strength balance occurs, and as a result, a defect in which the jaw 10 is deformed abnormally occurs.

[0028]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and its object is to solve the above-mentioned drawbacks of the prior art, and to expand and contract the jaw portion and bend the angle. Another object of the present invention is to provide a handrail that can effectively reduce the bending force and, as a result, can significantly improve the bending resistance and durability.

[0029]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a handrail comprising a C-shaped core body formed by laminating a plurality of canvases and a decorative rubber bonded to the handrail. The body is characterized by being made by laminating corrugated canvas.

That is, by constructing the core of the jaw of the handrail with a corrugated canvas, it is possible to measure the amount of expansion and contraction of the jaw, the bending angle and the bending force, which are received during handrail operation.
As a result, the bending resistance and durability of the handrail are remarkably improved.

In the present invention, the handrail is basically formed by adhering a decorative rubber on a C-shaped core body formed by laminating a plurality of canvases, and beet rubber may be embedded in the jaw. it can.

When beet rubber is embedded in the jaw in the present invention, a cushion rubber layer having excellent bending resistance can be inserted between the beet rubber layer and the canvas layer.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the handrail of the present invention will be described with reference to the drawings.

FIG. 1 is an enlarged sectional view taken along the line XX 'of the jaw of the handrail according to an embodiment of the present invention.

In FIG. 1, 9 is a decorative rubber layer, 11 is a bid rubber, 12 is a cushion rubber layer, and 14 is a corrugated canvas laminated core layer.

A jaw extension test and a model endurance test of the handrail (crack generation time of the core) of the thus obtained handrail of one embodiment of the present invention and the conventional handrail shown in FIGS. Tested.

The model durability test of the handrail is
The handrail of one embodiment of the present invention and the conventional handrail shown in FIGS. 5 and 6 are installed on a model escalator,
This is a measurement of the crack initiation time of the core.

Table 1 shows the results of these tests.

[0039]

[Table 1]

As can be seen from Table 1, the conventional handrail has a small jaw extension, and as a result, the durability is poor even in the model durability test.

On the other hand, the handrails of the examples have a large extension of the jaw, and as a result, excellent durability was exhibited in the model durability test.

[0042]

The handrail of the present invention effectively reduces the amount of expansion and contraction of the jaw portion, the bending angle and the bending force received during the operation of the handrail by forming the core of the jaw portion with the corrugated canvas. As a result, the bending resistance and durability of the handrail are remarkably improved, which is industrially useful.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of the handrail of the present invention taken along line XX ′.

FIG. 2 is a side view illustrating a traveling track of a handrail installed on an escalator.

FIG. 3 is a perspective explanatory view of a handrail that has been subjected to normal bending.

FIG. 4 is a perspective explanatory view of a handrail that has undergone reverse bending.

FIG. 5 is a cross-sectional explanatory view of a conventional handrail.

FIG. 6 is an enlarged cross-sectional view of the conventional handrail shown in FIG.

[Explanation of symbols]

 1 Handrail 2 Upper guide 31, 32, 33, 34 Guide roller 4 Drive roller 5 Intermediate guide 6 Lower guide 7 C-shaped canvas laminate 8 Tensile body 9 Decorative rubber layer 10 Jaw 11 Bead rubber 12 Cushion rubber layer 13 General canvas laminated core 14 Corrugated canvas laminated core layer

Claims (3)

[Claims] 1. A handrail having a C-shaped core body formed by laminating a plurality of canvases with a decorative rubber bonded thereto, wherein the jaw core body is formed by laminating corrugated canvas fabrics. A handrail that is characterized by being. 2. The handrail according to claim 1, wherein beet rubber is embedded in the jaw of the core, and the beet rubber is embedded so as to be wrapped in a corrugated canvas. 3. A beet rubber is embedded in the jaw portion of the core body, and a corrugated canvas laminated core body is provided so as to wrap around the outer peripheral side of the beet rubber, and the beat rubber and the corrugated canvas laminated core are provided. The handrail according to claim 1, wherein a cushion rubber layer is provided between the handrail and the body.