JP3125694B2 - Handrail - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel handrail used as a handrail for escalators and auto line passengers.

[0002]

2. Description of the Related Art Generally, escalators and auto lines installed in buildings such as department stores, stations, airports, and the like are provided with handrails called handrails for stably transporting passengers. This handrail is an endless endless belt stretched between drive pulleys.
It is driven continuously and cyclically in synchronization with the movement of the escalator and auto line.

[0003] As shown in FIG.
The cross section is formed in a substantially C-shape, and the opening side is circulated along the guide rail G while being engaged with the top of the guide rail G having a substantially T-shaped cross section, for example. The handrail H has a portion in contact with the guide rail G side formed of a canvas layer 1 formed by laminating a plurality of cotton fabrics, so that frictional resistance with the guide rail G is reduced and the outside thereof covers the same. It is formed from the decorative rubber 2 coated as described above, so that tactile sensation and aesthetic appearance are improved. Further, a tension member 3 composed of a plurality of steel wires 3a is embedded in the decorative rubber 2 along the length direction thereof, thereby preventing the handrail H from being stretched against tension. ing.

[0004]

By the way, most of such handrails H are conventionally used indoors in department stores, stations and the like in many cases, but due to recent diversification of buildings, the handrails H have been used outdoors. The examples used are increasing.

[0005] However, when used outdoors, there are various problems that could not be considered when used indoors, because they are easily affected by rainwater and dust. That is, the conventional handrail H
Is a canvas layer 1 for reducing friction with the guide rail G.
If the fabric is used outdoors as it is, the canvas layer 1 absorbs water such as rainwater, and dust and germs adhere to and propagate on the canvas layer 1 and the surface thereof. (Slip) occurs, and the handrail H is likely to idle. Therefore, if the tension of the handrail H is increased to prevent this idling, a large stress is applied to the entire handrail H,
The life will be shortened. Further, since the metal steel wire 3a is used as the tension member, the metal member is rusted by the influence of moisture permeating from the surface of the canvas layer 1, and the entire handrail H shrinks to increase running resistance. Further, in the worst case, it is conceivable that the steel wire 3a breaks due to rust or increase in tension, and the end of the steel wire 3a jumps out of the surface of the canvas layer 1 or the decorative rubber 2 to injure the passenger. .

The present invention has been devised in order to effectively solve such a problem, and the object of the present invention is to sufficiently withstand outdoor use which is easily affected by rainwater and dust. It provides a new handrail.

[0007]

In order to solve the above-mentioned problems, the present inventor has laid a synthetic fiber, such as rayon, in a sudare weave instead of the steel wire 3a which causes the above-mentioned inconvenience as the tension member 3. However, in the case of this rayon, the initial elongation is large, so that it is not compatible with the existing handrail H, and further elongation occurs during use. There are many disadvantages such as the necessity of adjustment, and it has been found that practical application is difficult. Therefore, we decided to use aramid fiber with relatively low elongation and weaving it.
As shown in FIG. 5, when the handrail H is concavely curved to the rear side, wrinkles appear on the surface of the decorative rubber 2, and the surface has irregularities, which greatly impairs the appearance. This is because, as shown in FIG. 6, the warp yarn T floats upward at the intersection with the weft yarn Y, which not only impairs the aesthetic appearance but also causes stress to accumulate in the decorative rubber 2 and the handrail H itself. It was found that the life was extremely shortened. For this reason, we tried to manufacture a handrail using only the warp yarns T without the weft yarns Y. However, as shown in FIG. 7, the twists of the warp yarns T still frayed, which emerged on the surface of the decorative rubber 2 to give an appearance. It turned out to be bad. This degree is improved as the number of twists of the warp yarn T is increased or as the thickness of the warp yarn is reduced. Did not reach.

Accordingly, in order to solve the above-mentioned various problems, the present invention firstly superimposes a decorative rubber on the back surface of an endless belt-like canvas layer having a substantially C-shaped cross section, In a handrail having a tension member embedded therein, the canvas layer is formed of a woven fabric made of polyester fiber or polyamide fiber.

That is, the entire canvas layer located on the inner surface of the handrail is formed of a woven fabric made of polyester fiber or polyamide fiber having excellent water absorption and antibacterial properties, instead of conventional cotton, so that dust and bacteria can be prevented. Slime due to adhesion and propagation of such as can be effectively suppressed.

Next, as the tension member, a band having a width of 20 mm to 50 mm made of aramid fiber or a chemical fiber mainly composed of aramid fiber is used.
It is possible to suppress the elongation by exhibiting the same tensile strength as that of the steel wire, and to prevent the adverse effect of moisture as in the case of using the steel wire.
Further, as this band, a plurality of main warps extending linearly in the length direction, a plurality of wefts crossing the main warp in a lattice shape, and an intersection of the warp and the weft are connected along the main warp. When the handrail itself is concavely curved, the woof does not emerge on the surface of the decorative rubber by forming the warp yarn for the binder. In addition, by making the warp yarn for the binder smaller in diameter than the main warp yarn, the rising of the warp yarn for the binder can be effectively suppressed.

[0011]

Next, a preferred embodiment of the present invention will be described.

FIG. 1 shows an embodiment of a handrail A according to the present invention. In the drawing, reference numeral 1 denotes a canvas layer formed in a substantially C-shaped cross section, and 2 denotes a back portion of the canvas layer 1. Is a tension member embedded in the canvas layer 1.

First, the canvas layer 1 is formed by laminating a plurality of layers of canvas 1a woven in a belt shape using an interlayer rubber such as natural rubber or synthetic rubber as an adhesive. In No. 1, such a canvas 1a is formed by laminating five layers via an interlayer rubber (not shown).

The fabric constituting the canvas layer 1 is made of a chemical fiber having excellent antibacterial properties and low water absorption. That is, by using such a chemical fiber in place of the conventionally used cotton, it is difficult for moisture to be sucked in, dust and bacteria hardly adhere and propagate, and are generated on the surface of the canvas layer 1. Slime can be effectively suppressed. Furthermore, by using such a chemical fiber, the tensile strength of the canvas layer 1 is also improved, and the thickness of the canvas layer 1 can be reduced. And, specifically, as this chemical fiber,
As shown in Table 1, polyester fibers are superior to conventional cotton and rayon in terms of water absorption, abrasion resistance, dimensional stability, microbial resistance, ease of availability, price fluctuation, etc. Or a polyamide fiber is most suitable.

[0015]

[Table 1]

Next, as the decorative rubber 2 to be formed on the back side of the canvas layer 1, a rubber excellent in tactile sensation, stain resistance, repetitive elongation, bending property and coloring property can be used. There is no particular limitation, for example, chloroprene rubber, chlorosulfonated polyethylene rubber,
Synthetic rubber such as styrene butadiene rubber and ethylene propylene rubber and natural rubber can be used as they are.

Next, the tension member 3 embedded in the canvas layer 1 is made of a band 3b made of aramid fiber having excellent tensile strength or chemical fiber mainly composed of aramid fiber.

As is well known, this aramid fiber has a particularly high tensile strength among chemical fibers, and has a strength of, for example, about 25 to 30 kgf per 1500 deniers. Warp 1
Per book, a tensile strength of 50 to 200 kgf can be obtained. Since the tensile force of the handrail is practically about 1000 kgf, and 2000 kgf is sufficient even if a margin is added, if ten to several tens of such warp yarns are used, there is no problem in tensile strength. There is no. Therefore, by using such a band body 3b made of aramid fiber as the tension member 3, it is possible to exhibit the same tensile force as the conventional steel wire 3a and effectively suppress the elongation of the entire handrail A. Even if water has penetrated into the canvas layer 1, the steel wire 3
There is almost no adverse effect of moisture as in the case of using a.

More specifically, as shown in FIGS. 2 and 3, the belt 3b has a plurality of main warp yarns 4a extending linearly in the longitudinal direction thereof and crossing the main warp yarns 4a in a lattice shape. A plurality of weft yarns 4b, and a binder warp yarn 4 connecting an intersection of the warp yarns 4a and the weft yarns 4b along the main warp yarns 4a.
c. The main warp yarns 4a exhibit a high tensile strength to prevent the elongation of the handrail A, and are arranged in a straight line. Therefore, even if the handrail A itself is concavely curved, the main warp yarns 4a and the weft yarns 4b are loose. It does not break or loosen and emerge on the surface of the decorative rubber 2, and does not cause inconvenience such as impairing the conventional aesthetic appearance. It is to be noted that the smaller the elongation of the aramid fiber, the better, and it is a matter of course that the aramid fiber is inserted as linearly as possible along its length as shown in the figure.

The width of the band 3b is set so as to be sufficiently hidden in the canvas layer 1, and is set, for example, in a range of 20 mm to 50 mm. That is, if the width of the band 3b is too narrow, it becomes difficult to produce a specified tensile force, and the force for maintaining the cross-sectional shape of the handrail is weakened, so that the handrail tends to come off the guide rail. On the other hand, if the width is too large, the rigidity of the rigid handrail A becomes too high, so that it is difficult to bend. In addition, a large amount of expensive aramid fiber is used, which leads to an inconvenience of increasing the cost. . Then, the band 3b is usually woven in a wide width, the surface thereof is subjected to an adhesive treatment, and both sides or one side is coated with a thin rubber, and then cut into an appropriate width in the range of about 20 mm to 50 mm as described above. Will be used.

Further, since the binder warp yarn 4c prevents the main warp yarn 4a and the weft yarn 4b from shifting or fraying, the diameter of the binder warp yarn is not more than 1/3 of the main warp yarn. This also effectively prevents the warp 4c itself from rising out of the binder. Further, as shown in FIG.
Is woven so that it is wound around the weft 4b,
There is no problem even if it is not necessarily straightened like the main warp yarn 4a. The binder warp yarn 4c and the main warp yarn 4
Although a is inserted so as to extend in the length direction, it is most effective to insert alternately. However, the binder warp thread 4b may be one binder warp thread 4b or the binder warp thread 4b may be coarser, and the present invention is not limited to the illustrated case. Further, the warp yarn 4b and the weft yarn 4b for the binder are used.
The material is not particularly limited to aramid fiber only for b,
For example, if inexpensive polyester, polyamide, cotton, etc. are used, cost reduction can be achieved.

[0022]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) Since the canvas layer is made of a chemical fiber such as polyester fiber or polyamide fiber having excellent water absorption, antibacterial properties, abrasion resistance, etc., slime due to propagation of germs and the like is eliminated, and long-term use is possible. However, the canvas layer is not scraped. Also, by using such a chemical fiber, the strength of the canvas layer is improved, and the thickness of the canvas layer can be reduced, so that the cost can be reduced and, at the same time, the adhesive can be used even outdoors. The reduction in force is small and the life is extended.

(2) Since the tension member is made of a chemical fiber mainly composed of aramid fiber having a high tensile strength, the tension member does not rust and shrinks during use to increase running resistance. There is no danger of cutting.

(3) Since the aramid fiber is used in a straight state, a handrail having relatively small elongation can be obtained, and the compatibility with the conventional handrail is excellent.

(4) Since the tension member is knitted so that the main warp made of aramid fiber is not easily frayed by the weft and the binder warp, even if the handrail is bent, it is difficult for the surface of the decorative rubber to have irregularities. It can prevent the aesthetic appearance from deteriorating and the stress of the cosmetic rubber.

(5) Therefore, even when used under severe conditions such as outdoors, it is possible to achieve high reliability and safety and at the same time to achieve a long life.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a handrail according to the present invention.

FIG. 2 is a partially enlarged side view showing an embodiment of a belt forming a tension member according to the present invention.

FIG. 3 is a partially enlarged side view showing another embodiment of the band forming the tension member according to the present invention.

FIG. 4 is a cross-sectional view showing one form of a conventional handrail.

FIG. 5 is a partial perspective view showing a state where a conventional handrail is curved upward.

FIG. 6 is a conceptual diagram showing a state in which a straight aramid fiber woven in a sudare is bent.

FIG. 7 is a conceptual diagram showing a state where a straight stranded wire is bent.

[Explanation of symbols]

 Reference Signs List 1 canvas layer 1a canvas 2 decorative rubber 3 tension member 3a steel wire 3b band 4a main warp yarn 4b weft yarn 4c warp yarn for binder

──────────────────────────────────────────────────の Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 23/24

Claims (2)

(57) [Claims] 1. A handrail in which a decorative rubber is superimposed on the back surface of an endless strip-shaped canvas layer having a substantially C-shaped cross section, and a tension member is embedded in the canvas layer or the interior of the decorative rubber. Is formed of a woven fabric made of polyester fiber or polyamide fiber, and the tension member is made of aramid fiber or a chemical fiber mainly composed of aramid fiber having a width of 20 m.
a plurality of main warps extending linearly in the longitudinal direction of the belt, a plurality of wefts crossing the main warp in a lattice, and a warp and a weft. A handrail comprising a binder warp connecting the crossing portion along a main warp. 2. The handrail according to claim 1, wherein the warp yarn for the binder has a smaller diameter than the main warp yarn.