JP2022097975A - handrail - Google Patents

Abstract

To provide a handrail that can inexpensively prevent sounding of the handrail, particularly resonance sound, with a simple structure.SOLUTION: A handrail has an outer edge formed by a coping part, a lower furring strip and columns. Between the columns, multiple vertical hollow lattices 2 are further provided with upper ends fixed to an upper furring strip engaged with the lower side of the coping part and lower ends fixed to the lower furring strip. Inside of at least one vertical hollow lattice 2 is filled with a filling material 3, and when the wind hits the vertical hollow lattices 2, the center of gravity of the vertical hollow lattices 2 moves by the movement of the filling material 3.SELECTED DRAWING: Figure 4

Description

The present invention relates to a handrail capable of preventing an audible harmful sound generated by the wind hitting the handrail.

Various handrails have been conventionally installed on the veranda of the building and the stairs and corridors provided outside the building for the purpose of preventing the fall of humans, pets, articles, etc. and for the purpose of improving the aesthetics. There is. Among this type of handrail, a handrail composed of vertically arranging hollow lattices in the horizontal direction at substantially equal intervals is known, and is generally used in various places.

Conventionally, it is known that in a handrail formed of a hollow body such as metal in a vertical lattice shape, the vertical lattice may generate a sound when the wind blows. This kind of sound is generally referred to by those skilled in the art as so-called ringing. Here, the sounding is a whistling sound that is a high-pitched sound like a whistle, a resonance sound generated by resonance between lattices, and harmful noise such as rattling sound that appears in relation to assembly and installation. Point to.

When this kind of so-called noise occurs, there have been problems such as noise problems, annoyance to humans near the handrail, and sometimes discomfort such as fear. is doing. In addition, the above-mentioned resonance sound may propagate inside the building, and in such a case, the sound may propagate on the floor and reach the ears of sleeping people, causing great discomfort. ..

When the wind hits the lattice, the lattice vibrates, and the lattice having a natural frequency equal to that of the lattice resonates, so that a resonance sound is considered to be generated. Further, it is known that a filling material is housed in a hollow handrail in order to prevent the resonance sound (for example, Patent Document 1), but the mechanism by which the packing material can prevent the resonance sound is not clear.

Japanese Unexamined Patent Publication No. 2009-30364

Therefore, it is an object of the present invention to provide a handrail that can prevent the sound of a handrail, particularly a resonance sound, at a low cost while having a simple structure.

This task is a handrail whose outer edge is composed of a cap tree portion (4), a lower furring strip (5), and a support column (6, 6'), and an upper end portion is provided between the support columns (6, 6'). A plurality of vertical hollow lattices (2, 2, ...) Fixed to the upper furring strip fitted to the lower side of the cap tree portion (4) and fixed to the lower furring strip (5) at the lower end portion. ) Is further provided, the inside of at least one vertical hollow lattice (2, 2, ...) Is filled with the filler (3), and the wind is blown in the vertical direction. Solved by a handrail characterized in that the center of gravity of the vertical hollow grid (2, 2, ...) Moves due to the movement of the filler (3) when it hits the hollow grid (2, 2, ...). Will be done.

According to the present invention, it is possible to effectively prevent the so-called noise generated by the wind blowing in the handrail provided outside the building, and it is possible to easily configure this type of handrail. ..

The effect of the present invention is not limited to the grid which is a member for handrails. For example, it can be applied to gates and the like configured in a vertical grid pattern.

It is a schematic front view of the handrail in the shape of a vertical hollow lattice. It is an enlarged view of the part A in FIG. It is a schematic bird's-eye view of a storm test device. It is a schematic perspective view of the vertical hollow grid 2 in which a hole 15 is formed in a part of the front side of the grid so that the upper surface of the filler 3 can be visually recognized. It is a figure which shows the structure, condition and the experimental result of the handrail 1 used in an experiment. It is a noise measurement result at a wind speed of 10 m / s when the storm test apparatus is applied to the handrail according to the embodiment of the present invention in the test body A. It is a noise measurement result at a wind speed of 20 m / s when the storm test apparatus is applied to the handrail according to the embodiment of the present invention in the test body B.

As mentioned above, the mechanism that can prevent the resonance sound of the handrail by filling the hollow lattice with the filling is not clear, but as a result of the filling preventing the matching of the natural frequencies of the lattice, the resonance sound. Is considered to disappear. Now, as a mechanism by which the natural frequencies of the lattice do not match each other and do not resonate, the present inventor moves the filler in the lattice up, down, left and right when the lattice is hit by wind, and in particular, the filler moves up and down. It was thought that the weight of the entire grid including the filling would change, and the center of gravity of the entire grid including the filling would move up and down. Therefore, an experiment was conducted to test this hypothesis.

FIG. 1 is a front view of a handrail made of a metal vertical hollow lattice according to the present invention.
In the handrail 1 shown in FIG. 1, the vertical hollow grids 2, 2, ... Can be seen. In FIG. 1, the vertically standing hollow lattices 2, 2 ... Are the vertical hollow lattices 2, 2, ... respectively on the upper furring strip fitted to the lower side of the cap tree portion 4. The upper end surface is fixed, and the lower end surface thereof is fixed to the lower furring strip 5. For these fixing methods, for example, fixing means such as screws and screws are used. Further, the lower furring strip 5 extends in the horizontal direction, and both end faces thereof are fixed to the left and right columns 6 and 6'standing vertically. Further, the upper end surfaces of the columns 6, 6'are also fixed to the upper furring strip fitted to the lower side of the cap tree portion 4, similarly to the vertical hollow lattices 2, 2, .... Again, these cases are also fixed by any fixing means (for example, bolting).

Further, for example, the cap tree portion 4 may form a substantially quadrangular cross-section together with the upper furring strip fitted to the lower side of the cap tree portion 4, or may form a substantially circular cross-section. Further, the cross sections of the vertical hollow lattices 2, 2, ... May be substantially quadrangular or circular. Regarding other members used for the handrail of the present invention, the effect of the present invention does not depend on the shape, dimensions, materials, etc. of the members. Further, even in the handrail that has already been installed, the effect of the present invention can be exhibited by filling the internal hollow space of the vertical hollow lattices 2, 2, ...

FIG. 2 is an enlarged view of the portion indicated by the symbol A in FIG. 1. In FIG. 2, the portion indicated by the diagonal line at the lower end of the metal vertical grid 2 is filled with the filling material 3, and the symbol W indicates the height at which the filling material 3 is filled.

Hereinafter, examples to which the present invention is applied will be described in comparison with reference examples of the prior art.

The appearance of the vertical grid-shaped handrails used in the experiment is the same as that of the handrail shown in FIG. 1, and all the members used for the handrail 1 are made of an aluminum mold material. The approximate dimensions and shape are such that the height from the bottom surface of the columns 6 and 6'to the upper surface of the cap tree portion 4 is 1200 mm, and the distance between the central axes of the columns 6 and 6'is 871.4 mm. .. Further, the distance between the longitudinal central axes of the adjacent vertical hollow lattices is set to 80 mm. The metal vertical hollow grid used in this experiment is approximately square with a cross section of 30 x 15 mm, and the shorter side surface (15 mm side) is arranged so that it can be seen in front of the drawing, and the longer side surface (30 mm side). Are arranged so as to face the columns 6 and 6', respectively. Further, the length of the metallic vertical lattice was equal to the distance from the upper end surface of the lower furring strip 5 to the lower end surface of the cap tree portion 4, and the length was 1058 mm. The cap tree portion 4 used in this experiment forms a substantially quadrangle with a cross section of 60 × 40 mm together with the cap tree portion 4 and the upper furring strip fitted to the lower side thereof, and the upper end portion thereof extends outward from the center when viewed in cross section. Gently incline downward toward. The columns 6 and 6'consisting of approximately a square having a cross section of 50 x 50 mm, and are configured such that the central axis in the longitudinal direction of the column is located 100 mm from the outermost end in the longitudinal direction of the cap tree portion 4. The lower furring strip 5 has an approximately square shape of 40 × 25 mm in cross section, and its lower end surface is located 85 mm from the lowermost end surface of the column. Further, the 40 mm longer side surface side becomes the upper and lower surfaces and is mounted so as to be parallel to the installation surface.

In the experiment, as shown in FIG. 4, a vertical hollow grid 2 in which a hole 15 is formed in a part of the front side of the grid so that the upper surface of the filler 3 can be visually recognized (hereinafter, appropriately referred to as “hole processing grid 2”). And a vertical hollow lattice 2 without holes 15 (hereinafter, appropriately referred to as “non-hole processing lattice 2”) was used. In the hole processing lattice 2, the hole length is 60 mm and the width is 11 mm, the hole 15 is closed with a transparent sheet 16, and the transparent sheet 16 is adhered to the vertical hollow lattice 2 with a transparent adhesive tape 17 to form a filler 3. Leakage was prevented. By limiting the hole length to 60 mm with respect to the length of the vertical hollow grid 2 of 1058 mm, the influence of the hole 15 on the rigidity of the vertical hollow grid 2 was minimized.

In the example shown in FIG. 4, the filling is 30 mm from the lower end of the hole and 30 mm from the upper end of the hole, and is filled up to 100 mm from the lower end of the grid, but varies from the lower end of the grid as described later. The experiment was carried out by packing the filler 3 to a high height. The weight of the filler 3 used in the experiment was 20 g to 210 g.

Since it is clear that the noise is generated when the wind is blown to the conventional handrail that is not filled with the filler 3, the presence or absence of the noise in this case is not observed.

As a means of blowing the wind, a storm test device generally used in wind experiments was used. The schematic configuration is shown in FIG. 3 as a bird's-eye view. In FIG. 3, the symbol 10 is an outlet pipe 10 for sending out wind, and the tip portion 11 thereof indicates an outlet having an outlet diameter of 600 mm and having a circular cross section. The handrail 1 in the test device is installed in the center of the turntable 12, and by moving the turntable 12 and adjusting its position, the wind sent from the outlet 11 of the blowout pipe 10 hits the center of the handrail 1. It is installed like this. That is, the position of the turntable 12 is adjusted in the horizontal plane direction and the vertical direction so that the cross-sectional center axis of the outlet 11 is aligned with the center of the grid portion of the handrail 1. It is also possible to rotate the turntable 12 with the handrail 1 fixed, and in the experiment, the front surface of the handrail 1 (the surface shown in FIG. 1) is placed parallel to the cross section of the outlet 11. Assuming that the case is 0 ° (plane angle 0 °), there are cases where the plane angle is 0 °, when it is rotated clockwise by 30 ° (plane angle 30 °), and when it is rotated by 60 ° (plane angle 60 °). The wind speed was changed in a total of 3 patterns, and the presence or absence of noise was confirmed. Further, as will be described later, frequency measurement (noise measurement) is performed on the non-hole processing grid 2 filled with 70 g of glass beads, the hole processing grid 2 filled with 70 g of glass beads, and the non-hole processing grid 2 filled with 50 g of glass beads. Was carried out. Since the object of the present invention is to prevent the generation of audible sound, whether or not the sound is generated can be determined by the experimenters' hearing, that is, whether the experimenters can confirm the sound by their own hearing. I went with or without. The wind speed was changed every 1 m / s from 4 m / s to 20 m / s in each of the three patterns of experiments.

In the conventional handrail, the noise is generated at 0 °, that is, at a wind speed of about 10 to 13 m / s when the wind hits the front of the handrail 1 as seen in FIG. 1, at 30 ° and 30 °. It is known that no audible noise is generated at 60 °.

The noise was measured using an integral sound level meter (model NA-28) manufactured by RION. In the setting of the sound level meter, the frequency weighting characteristic was set to A characteristic and the time weighting characteristic was set to F (Fast), and the noise was measured for 10 seconds. Further, the sound level meter is performed at a position 2 m from the center point of the handrail 1 from diagonally forward of the handrail 1 (on the side of the outlet 11 when viewed from the handrail 1). Here, the AP value shown in FIGS. 6 and 7 is an all pass noise level value, which is a value indicating all the volume (noise level) of all frequencies at the time of measurement, and is noise. It is a value obtained by directly calculating the total power from the sound pressure signal of the meter.

FIG. 5 is a diagram showing the configuration, conditions, and experimental results of the handrail 1 used in the experiment.
The test piece A of FIG. 5A is a non-hole processing grid 2 in which a hole 15 is not formed, and in order to prevent the noise, the filling material 3 is used in all the non-hole processing grids 2, 2, ... -It is filled from the lower end surface to a height of about 13% of the total length, that is, to a height of W = 140 mm. Glass beads are used for the filling, and the filling weight per lattice is 70 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is about 23%. As is clear from FIG. 5 (a), the sound audible to the experimenter did not occur not only at 30 ° and 60 ° but also at 0 °.

Especially when sand is filled in the aluminum handrail of the balcony on the beach, rainwater, seawater and moist air containing salt are easily mixed with the sand, and the sand easily corrodes the aluminum handrail, and sometimes the handrail. Has an accident that explodes. However, such a problem can be avoided by using glass beads that do not absorb water. Further, if the glass beads are used, it is possible to manufacture a handrail having an effect of preventing noise at a very low cost. In the experiment, soda-lime glass beads having a particle size of 2000 to 2500 μm were used.

Further, FIG. 6 shows the result of noise measurement at a wind speed of 10 m / s with the test body A, and FIG. 7 shows the result of noise measurement at a wind speed of 20 m / s. As can be seen from FIGS. 6 and 7, only background noise was observed at both wind speeds of 10 m / s and 20 m / s, and no sound or sound was observed from the handrail 1 of the test piece A. Specifically, as shown in FIG. 6, the AP value at a wind speed of 10 m / s was less than 60 dB, and was less than 50 dB at a frequency of 16 to 8000 Hz. Further, as shown in FIG. 7, the AP value at a wind speed of 20 m / s was about 70 dB, which was less than 70 dB at a frequency of 16 to 8000 Hz.

The test piece B of FIG. 5B is a hole processing grid 2 having a hole 15, and the filling material 3 is placed under all the hole processing grids 2, 2, ... In order to prevent the noise. It is filled from the side end face to a height of about 13% of its total length, that is, to a height of W = 140 mm. Glass beads are used for the filling, and the filling weight per lattice is 70 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is about 23%. As is clear from FIG. 5 (b), the sound audible to the experimenter did not occur not only at 30 ° and 60 ° but also at 0 °.

Further, in the case of these angles, the experimenter can see from the hole 15 that the filler 3 (see FIG. 4) near the upper surface vibrates as the wind speed hitting the hole processing grids 2, 2, ... Is increased. It could be confirmed visually. In addition, the experimenter visually confirmed from the hole 15 that the filler 3 (see FIG. 4) near the upper surface repeatedly soared and landed irregularly when the wind speed hitting the hole processing grids 2, 2, ... Was confirmed by. Further, it was the filler 3 near the upper surface that soared up, but it was considered that the filler 3 packed further down also vibrated slightly. Therefore, the reason why the sounding could be prevented in the test piece B is that the filling 3 near the upper surface soars and the minute vibration of the filling 3 packed further downward causes the entire hole processing grid 2 including the filling 3 to be prevented. It is probable that the weight of the holes changed, and as a result, the center of gravity of the entire hole processing grid 2 moved slightly up and down, and the natural frequencies of the adjacent hole processing grids 2, 2, ... Did not match. Therefore, it was proved that this hypothesis is correct in the test body B.

Further, since the experimental results of the test body A and the test body B were the same except for the presence or absence of the hole 15, the soaring of the filling material 3 and the vertical movement of the center of gravity of the entire non-hole processing grid 2 also in the test body A. It can be inferred that this has occurred, and it has also been confirmed that there is no effect on the hole processing grid 2 and the handrail 1 due to the processing of the hole 15.

Further, FIG. 6 shows the result of noise measurement at a wind speed of 10 m / s with the test body B, and FIG. 7 shows the result of noise measurement at a wind speed of 20 m / s. As can be seen from FIGS. 6 and 7, only background noise was observed at both wind speeds of 10 m / s and 20 m / s, and no sound or sound was observed from the handrail 1 of the test body B. Specifically, as shown in FIG. 6, the AP value at a wind speed of 10 m / s was less than 60 dB, and was less than 50 dB at a frequency of 16 to 8000 Hz. Further, as shown in FIG. 7, the AP value at a wind speed of 20 m / s was about 70 dB, which was less than 70 dB at a frequency of 16 to 8000 Hz.

The test piece C of FIG. 5 (c) is a non-hole machined grid 2 without holes 15, and in order to prevent the noise, the filler 3 is filled with all the non-hole machined grids 2, 2, ... -It is filled from the lower end surface to a height of about 10% of the total length, that is, to a height of W = 100 mm. Glass beads are used for the filling, and the filling weight per lattice is 50 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is about 17%. As is clear from FIG. 5 (c), the sound audible to the experimenter did not occur not only at 30 ° and 60 ° but also at 0 °.

Further, FIG. 6 shows the result of noise measurement at a wind speed of 10 m / s with the test body C, and FIG. 7 shows the result of noise measurement at a wind speed of 20 m / s. As can be seen from FIGS. 6 and 7, only background noise was observed at both wind speeds of 10 m / s and 20 m / s, and no sound or sound was observed from the handrail 1 of the test body C. Specifically, as shown in FIG. 6, the AP value at a wind speed of 10 m / s was less than 60 dB, and was less than 50 dB at a frequency of 16 to 8000 Hz. Further, as shown in FIG. 7, the AP value at a wind speed of 20 m / s was about 70 dB, which was less than 70 dB at a frequency of 16 to 8000 Hz.

The test piece D in FIG. 5D is a hole processing grid 2 having a hole 15, and in order to prevent the noise, the filling material 3 is used in all the non-hole processing grids 2, 2, ... It is filled from the lower end face to a height of about 41% of the total length, that is, to a height of W = 430 mm. Glass beads are used for the filling, and the filling weight per lattice is 210 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is about 70%. As is clear from FIG. 5 (d), the sound audible to the experimenter did not occur not only at 30 ° and 60 ° but also at 0 °.

Further, in the case of these angles, the experimenter can see from the hole 15 that the filler 3 (see FIG. 4) near the upper surface vibrates as the wind speed hitting the hole processing grids 2, 2, ... Is increased. It could be confirmed visually. In addition, the experimenter visually confirmed from the hole 15 that the filler 3 (see FIG. 4) near the upper surface repeatedly soared and landed irregularly when the wind speed hitting the hole processing grids 2, 2, ... Was confirmed by. Further, it was the filler 3 near the upper surface that soared up, but it was considered that the filler 3 packed further down also vibrated slightly. Therefore, the reason why the sounding could be prevented in the test piece D is that the filling 3 near the upper surface soars and the minute vibration of the filling 3 packed further downward causes the entire hole processing grid 2 including the filling 3 to be prevented. It is probable that the weight of the holes changed, and as a result, the center of gravity of the entire hole processing grid 2 moved slightly up and down, and the natural frequencies of the adjacent hole processing grids 2, 2, ... Did not match. Therefore, it was proved that this hypothesis is correct in the test body D.

In this embodiment, the filling weight is 210 g, which is the upper limit. This is because the filling 3 can be further filled in the hole processing grids 2, 2, ..., But it is preferable to avoid an increase in the weight of the entire handrail 1.

The test piece E of FIG. 5 (e) is a non-hole machined grid 2 without holes 15, and in order to prevent the noise, the filler 3 is filled with all the non-hole machined grids 2, 2, ... -It is filled from the lower end surface to a height of about 4% of the total length, that is, to a height of W = 40 mm. Glass beads are used for the filling, and the filling weight per lattice is 20 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is about 7%. As is clear from FIG. 5 (e), the sound audible to the experimenter did not occur at 30 ° and 60 °, but occurred at a wind speed of 12 m / s to 13 m / s at 0 °. did.

Specifically, in the case of 0 °, first, a friction sound generated when the glass beads move greatly up and down in the aluminum non-hole processing grid 2 and rub against the non-hole processing grid 2 is heard, and immediately after the friction sound, the non-hole processing grid 2 is heard. I heard the noise of the hole processing grid 2. In FIG. 5 (e), this sound is indicated by "x". The cause of the noise in this case is that the weight of the filling 3 packed in the non-hole processing grid 2 is small and many of the fillings 3 are soared, so that the non-hole processing grid 2 including the filling 3 is generated. Since the overall weight has decreased, approaching the weight of the non-hole drilling grid 2 itself, and the vertical movement of the center of gravity of the non-hole drilling grid 2 has also disappeared, the resonance sound is generated by the matching of the natural frequencies of the adjacent non-hole drilling grids 2. It is probable that it occurred. Therefore, it was proved that this hypothesis is correct also in the test body E. The correctness of this hypothesis is supported by the fact that the sound of the non-hole processing grid 2 was heard immediately after the fricative sound.

The test piece F of FIG. 5 (f) is a non-perforated grid 2 without holes 15, and in order to prevent the noise, the filler 3 is filled with all the non-perforated grids 2, 2, ... -It is filled from the lower end surface to a height of about 6% of the total length, that is, to a height of W = 60 mm. Glass beads are used for the filling, and the filling weight per lattice is 30 g. Since the weight of one grid is 300 g, the ratio of the filler 3 per grid is 10%. As is clear from FIG. 5 (f), the sound audible to the experimenter did not occur at 30 ° and 60 °, but at 0 °, a peculiar sound was produced at a wind speed of 12 m / s to 13 m / s. It occurred in the vicinity.

This peculiar sound is a fricative sound generated when the above-mentioned glass beads move greatly up and down in the non-perforated lattice 2 made of aluminum and rub against aluminum. Since this fricative noise is not harmful noise unlike the noise that should be prevented, it was confirmed that the noise was prevented even in the test body F. In FIG. 5 (f), this fricative is indicated by “Δ”. The reason why the noise could be prevented even if the test body F generated a friction sound is that the weight of the test body F is 10 g heavier than that of the test body F, so that a friction sound is generated when a small amount of the filler 3 near the upper surface rises. However, the minute vibration of the remaining filling 3 that did not rise changed the weight of the entire non-hole processing grid 2 including the filling 3, and as a result, the center of gravity of the entire non-hole processing grid 2 moved slightly up and down. It is probable that the natural frequencies of the adjacent non-hole machined lattices 2 did not match. Therefore, it was proved that this hypothesis is correct also in the test body F.

As described above, according to the present invention, in order to prevent noise by preventing the natural frequencies of the adjacent vertical hollow grids 2, 2, ... It is not necessary to fill 2, 2 ... As a modification, in the handrail 1, the vertical hollow lattice 2 filled with the filling 3 and the vertical hollow lattice 2 not filled with the filling 3 are provided. , May be arranged alternately.

Further, as a further modification, the handrail 1 may be filled with the filling 3 so that the weights of the fillings 3 filled in the two adjacent vertical hollow lattices 2, 2, ... Are different.

Further, as a further modification, it is sufficient that the filling 3 to be filled in the two adjacent vertical hollow lattices 2, 2, ... In the handrail 1 is not fixed and can vibrate.

As described above, according to the embodiment of the present invention, it is a handrail whose outer edge is composed of the cap tree portion 4, the lower furring strip 5, and the columns 6 and 6', and the upper end is between the columns 6 and 6'. A plurality of vertical hollow lattices 2, 2, ... In the handrail 1, at least one of the vertical hollow grids 2, 2 ... Is filled with the filler 3, and the wind hits the vertical hollow grids 2, 2, ... At that time, the center of gravity of the vertical hollow lattices 2, 2, ... Is moved by the movement of the filling 3.

1 Handrail 2 Vertical hollow lattice 3 Filling 4 Kasagi part 5 Lower trunk edge 6 Strut

Claims (7)

It is a handrail whose outer edge is composed of a cap tree portion (4), a lower trunk edge (5), and a support column (6, 6'). 4) Further provided with a plurality of vertical hollow lattices (2, 2, ...) Fixed to the upper furring strip fitted to the lower side and fixed to the lower furring strip (5) at the lower end. In the handrail (1) composed of
The inside of at least one of the vertical hollow grids (2, 2, ...) Is filled with the filler (3), and when the wind hits the vertical hollow grids (2, 2, ...), A handrail characterized in that the center of gravity of the vertical hollow lattice (2, 2, ...) Moves due to the movement of the filler (3). The handrail according to claim 1, wherein the filling (3) is filled inside all the vertical hollow lattices (2, 2, ...). The vertical hollow grid (2, 2, ...) Filled with the filling (3) and the vertical hollow grid (2, 2, ...) Not filled with the filling (3). The handrail according to claim 1, wherein the handrails are arranged alternately. It is characterized in that the filling (3) is filled so that the weights of the fillings (3) filled in the two adjacent vertical hollow lattices (2, 2, ...) Are different. The handrail according to any one of claims 1 to 3. The handrail according to any one of claims 1 to 4, wherein the filling material (3) weighs 30 g to 210 g. Any of claims 1 to 5, wherein the ratio of the weight of the filling (3) to the weight of one vertical hollow lattice (2, 2 ...) Is 10% to 70%. The handrail described in item 1. The handrail according to any one of claims 1 to 6, wherein the filling material (3) is a glass bead.

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