JP2014005631A - Sound-proof wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound-proof wall capable of preventing the occurrence of sound leakage via a gap between a magnetic substance and a magnetic unit installed on a sound insulation plate, thereby preliminarily preventing the occurrence of a noise damage.SOLUTION: The sound-proof wall includes: a sound insulating board 13 supported so as to be freely rotatable via a sound insulating board support shaft 15A in a frame body 12, and installed such that an opening 11 surrounded by frame body 12 is opened or closed; and a magnetic force adsorbent M disposed between the lower frame of the frame body 12 and the sound insulating board 13 such that when the sound insulating board 13 is closed, the sound insulating board 13 is held in a closed state. At least one of the sound insulating board 13 and the magnetic absorbent M is formed with a sealing member (an elastic body 15B of an elastic hinge 15, a horizontal/vertical sealing member 18 constituted of a viscoelastic body) for adhering the frame body 12 and the sound insulating board 13.

Description

  The present invention relates to a soundproof wall installed for the purpose of absorbing and blocking noise.

  Noise generated by railroad travel includes rolling noise generated from wheel and rail vibrations, noise generated from pantographs, vehicle aerodynamic noise generated from the action of the vehicle body and airflow, and vibrations of structures such as viaducts. The generated structural sounds are the main ones. A sound barrier is installed along the railroad track for the purpose of absorbing and shielding rolling noise, vehicle aerodynamic sound, and the like (see, for example, Patent Document 1).

By the way, higher soundproof walls are required in recent years when the number of houses along the line is increasing. However, when the height of the soundproof wall is increased, the rotational moment due to the wind load increases during strong winds. Therefore, when the soundproof wall is installed on a structure such as a viaduct or a bridge, the load on these structures increases. Therefore, it is necessary to reinforce the structure and fundamentally reconstruct the structure so that it can withstand the load during strong winds, and enormous costs and time are required for large-scale construction. In view of this, there has been proposed a soundproof wall that does not require a large-scale construction and that has a certain sound insulation performance in a normal state and can reduce a wind load in a strong wind.
For example, in Patent Document 2, a plurality of soundproof members are arranged substantially horizontally at a predetermined interval between support members that are erected at intervals, and the sound insulation members are arranged to be openable and closable between the soundproof members. A soundproof wall is disclosed in which the sound insulation member falls when it exceeds a predetermined wind pressure, the sound insulation member is opened, and the sound insulation member is restored when it falls below a predetermined wind pressure, and the sound insulation member is closed. Yes.

JP-A-10-121599 JP 09-209316 A

  However, the soundproof wall shown in Patent Document 2 is composed of a number of members such as a soundproof member, a soundproof member, a rotating shaft, and a support arm, and the structure thereof is very complicated. Therefore, while it is possible to relax the wind load during strong winds and ensure safety, there is a problem that the construction becomes complicated and the material costs increase and the construction costs.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a magnetic body and a magnetic adsorption body composed of a magnetic body and a magnet unit between a frame body and a sound insulating plate that can be opened and closed on the frame body. In the closed state, the magnetic body installed between the sound insulation plate and the frame and the magnet unit are magnetically adsorbed so that the sound does not leak, and the sound insulation plate can smoothly rotate. An object of the present invention is to provide a soundproof wall capable of realizing a mechanism capable of being easily and at low cost.

  In order to solve the above problems, the present invention proposes the following means. That is, in the present invention, the sound insulating plate that is rotatably supported in the frame body via the sound insulating plate support shaft and is provided so as to open or close the opening surrounded by the frame body, and the frame body A magnetic force adsorber that is disposed between the lower frame and the sound insulation plate and holds the sound insulation plate in a closed state when the sound insulation plate is closed, and the sound insulation plate or the magnetic force adsorption body At least one of them is provided with a sealing member for bringing the frame body and the sound insulating plate into close contact with each other.

According to the present invention, the frame and the sound insulating plate are in close contact with at least one of the sound insulating plate supported by the frame so as to be freely opened and closed, or the magnetic adsorption member disposed between the lower frame of the frame and the sound insulating plate. Since the sealing member is installed, when the sound insulation plate is closed, the sealing member can prevent sound leakage through the gap between the sound insulation plate and the frame body. Can be prevented.
Further, in the present invention, by using an elastic hinge for opening and closing the sound insulation plate, the magnetic body and the magnet unit installed between the sound insulation plate and the frame body are magnetically adsorbed so as not to leak sound when in the closed state. In this state, a mechanism that can smoothly rotate the sound insulating plate can be realized easily and at low cost.
Further, in the present invention, a member such as a viscoelastic body or a sheet-like seal member is used as the sealing member, and further, the viscoelastic body or the seal member is formed in various forms, thereby corresponding to the installation situation / installation environment. An excellent soundproof wall can be configured.

It is a front view of the soundproof wall concerning a 1st embodiment of the present invention. It is the figure which looked at the soundproof wall of FIG. 1 from the front, Comprising: (A) has shown the closed state, (B) has shown the open state. It is the figure which looked at the soundproof wall of FIG.2 (B) from the arrow III side direction. It is the top view which looked at the elastic hinge vicinity of the soundproof wall of FIG. 2 from upper direction. It is a figure which shows the modification 1 of 1st Embodiment, Comprising: It is a side view for demonstrating arrangement | positioning state (A)-(D) of the support shaft of the elastic hinge shown by FIG. It is a figure which shows the modification 2 of 1st Embodiment, Comprising: (A) is a front view of a soundproof wall, (B) is a figure which shows the sound-insulation board closed state which looked at (A) from the side, (C) is It is a figure which shows the sound-insulation board open state which looked at (A) from the side. It is a figure which shows the other form of FIG. 6, Comprising: (A) The figure which shows a sound-insulation board closed state, (B) is a figure which shows a sound-insulation board open | released state. It is a front view of the soundproof wall concerning the modification 3 of 1st Embodiment, Comprising: (A)-(E) has shown the various installation patterns of the magnet unit and a magnetic body. It is a front view of the soundproof wall which concerns on the modification 4 of 1st Embodiment, Comprising: (A)-(I) has shown the various shapes which can set these magnet units and a magnetic body. It is a front view of the soundproof wall concerning a 2nd embodiment of the present invention, and (A) shows a closed state and (B) shows an open state. It is a front view which shows the modification 1 of 2nd Embodiment. It is a front view which shows the modification 2 of 2nd Embodiment. It is a front view which shows the modification 3 of 2nd Embodiment. It is a front view which shows the modification 4 of 2nd Embodiment. It is a front view which shows the modification 5 of 2nd Embodiment. It is a front view which shows the modification 6 of 2nd Embodiment. It is a front view of the soundproof wall concerning a 3rd embodiment, (A) shows a closed state and (B) shows an open state. It is a front view which shows the modification 1 of 3rd Embodiment. It is a figure which shows the modification 2 of 3rd Embodiment, Comprising: (A) is a perspective view which shows the vicinity where the viscoelastic body is arrange | positioned, (B) is a top view.

(First embodiment)
Hereinafter, with reference to FIGS. 1-9, the structure of the sound barrier which concerns on 1st Embodiment of this invention is demonstrated first. 1 is a schematic perspective view showing an appearance of a soundproof wall 10 according to the first embodiment, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a side view of FIG.
As shown in FIG. 1, the soundproof wall 10 includes a frame body 12 having an opening 11 therein, a sound insulation plate 13 provided in the opening 11 of the frame body 12, and a lower frame 12 </ b> A of the frame body 12. And a magnetic force adsorbing body M (described later) that holds the sound insulating plate 13 in a closed state when the sound insulating plate 13 is closed. Although not shown in detail in FIG. 1, the soundproof wall 10 configured in this way is installed on a structure on the side of the railway track on which the railway runs or on a soundproof wall laid on the structure.

  The frame 12 has a lower frame 12A extending in the horizontal direction, a pair of left and right side frames 12B erected on the lower frame 12A at a predetermined interval, and an upper end of the pair of side frames 12B. An upper frame 12C extending in the horizontal direction. Then, by surrounding the four sides with the lower frame 12A, the upper frame 12C, and the left and right side frames 12B, the substantially rectangular opening 11 is formed in a front view.

  As shown in FIG. 1, the sound insulating plate 13 has a substantially rectangular shape when viewed from the front and is provided with a flat plate-like main body portion 14 provided to close the opening portion 11, and a side frame 12 </ b> B of the frame body 12. And an elastic hinge 15 that rotatably supports the main body 14 and absorbs or shields noise.

2 and 3, the elastic hinge 15 is horizontally provided on both sides of the upper portion of the main body portion 14 of the sound insulating plate 13 and is connected to the side frame 12B of the frame body 12A. An elastic body 15B (sealing member) that is installed on the side frame 12B of the frame body 12 and rotatably supports the sound insulation plate support shaft 15A around the sound insulation plate support shaft 15A; The casing 15C is installed in the part frame 12B and accommodates the elastic body 15B.
Then, with the elastic hinge 15 as a center, the sound insulation plate 13 is located at the closed position shown in FIG. 2A and the open position shown in FIG. 2B and FIG. 3 around the axis 15D of the sound insulation plate support shaft 15A along the horizontal direction. Open and close as shown by arrows (b)-(b). Further, by the elastic body 15B disposed on the sound insulating plate support shaft 15A of the elastic hinge 15, when the sound insulating plate 13 is closed, sound leakage through the gap between the sound insulating plate 13 and the frame body 12 can be prevented. This makes it possible to prevent noise damage from occurring.

  The magnetic force adsorbing body M includes a magnet unit 16 disposed on the upper surface of the lower frame 12A facing the opening 11 of the frame body 12 and a magnetic body 17 provided along the lower end of the main body portion 14 of the sound insulating plate 13. .

The magnetic body 17 is made of a ferromagnetic body and holds the main body portion 14 of the sound insulating plate 13 so as not to move by a magnetic action with the magnet unit 16.
As shown in FIG. 1, the magnetic body 17 is a substantially rectangular parallelepiped member, and the longitudinal method is set substantially equal to the width method of the main body portion 14, that is, substantially equal to the lateral width of the opening 11. Yes. The magnetic body 17 configured as described above is fixed to the lower end of the main body 14 in a state where the longitudinal direction thereof is directed to the lateral width direction of the opening 11.

The magnet unit 16 is installed on the upper surface of the lower frame 12A of the frame body 12, and holds the sound insulation plate 13 so as not to rotate by attracting the magnetic body 17 by magnetic action. The magnet unit 16 includes a columnar magnet 16A in the longitudinal direction on the upper surface of a magnet holder (not shown).
Moreover, the vertical sealing member 18 which consists of a viscoelastic body is provided in the side part of the sound insulation board 13 which opposes the side part frame 12B of the frame 12 at the time of closure. As shown in FIG. 2, the vertical sealing member 18 is formed to have substantially the same length and width as the side portion of the sound insulating plate 13, and the sound insulating plate 13 closes the opening 11. At some point, the magnetic body 17 and the magnet unit 16 are brought into close contact with each other. As a result, sound leakage is prevented from occurring through the gap between the magnetic body 17 and the magnet unit 16, and noise damage can be prevented from occurring.
In addition, as a viscoelastic body which comprises the vertical sealing member 18, butyl rubber, gel-like bodies, such as silicone, foams, such as urethane, are used.

Both ends of the magnet 16 </ b> A of the magnet unit 16 are rotatably supported by the side frame 12 </ b> B of the frame body 12 via elastic hinges 19.
As shown in FIGS. 2 and 4, the elastic hinge 19 includes a magnet unit support shaft 19 </ b> A disposed horizontally along the length direction of the magnet 16 </ b> A at both ends thereof, and side portions of the frame body 12. An elastic body 19B installed around the magnet unit support shaft 19A on the frame 12B and rotatably supporting the magnet unit support shaft 19A, and an elastic body 19B installed on the side frame 12B of the frame body 12 It has a casing 19 </ b> C for housing.
When the sound insulation plate 13 is opened and closed by such an elastic hinge 19, the magnet unit 16 swings about the axis 19D of the magnet unit support shaft 19A, so that the magnet unit 16 and the magnetic body 17 are Adsorption or separation can be performed smoothly.
In addition, although the structure of the elastic hinge 19 was shown in FIG. 4, the elastic hinge 15 which supports the sound insulation board 13 is also the same structure.

  In the magnetic adsorption body M, the magnet unit 16 is provided in the lower frame 12A of the frame body 12 and the magnetic body 17 is provided in the lower portion of the sound insulating plate 13. However, the positions of the magnet unit 16 and the magnetic body 17 are determined. You may do the opposite. That is, the magnetic body 17 may be provided on the lower frame 12 </ b> A of the frame body 12, and the magnet unit 16 may be provided below the sound insulating plate 13. The position change of the magnetic force adsorbing body M is the same in the following modified examples, embodiments, and modified examples.

  And in the soundproof wall 10 comprised as mentioned above, in the state without a wind or a weak wind, the sound insulation board 13 will be in a closed state by the magnet unit 16 adsorb | sucking the magnetic body 17, ie, an opening part. 11 is closed. As a result, noise generated on the railway track is absorbed or shielded by the sound insulation plate 13 and is prevented from diffusing outside. At this time, the viscoelastic body 15A disposed on the sound insulating plate support shaft 15A of the elastic hinge 15 and the viscoelastic body provided on the side of the sound insulating plate 13 facing the side frame 12B of the frame 12 when closed. Since the frame 12 and the sound insulation plate 13 are brought into close contact with each other by the vertical sealing member 18, sound leakage through the gap between the frame 12 and the sound insulation plate 13 is completely prevented, and noise damage occurs. Can be prevented.

  When strong wind blows, the sound insulation plate 13 tries to rotate around the sound insulation plate support shaft 15A of the elastic hinge 15 as shown by the dotted line in FIG. At this time, the wind load applied to the sound insulating plate 13 causes a force to pull the magnetic body 17 and the magnet 16A apart. And in a strong wind state, since the force which is going to separate exceeds the magnetic attraction force of the magnet 16A and becomes a dog, the magnetic body 17 is pulled away from the magnet 16A. Thereby, the sound insulation plate 13 released from the magnetic attraction force of the magnet 16A is turned away from the magnet 16A to be in an open state, that is, a state in which the opening 11 of the frame body 12 is opened. A ventilation space 50 is formed between the sound insulating plate 13 and the lower frame 12A. Then, the strong wind blown to the sound insulation plate 13 passes through the ventilation space 50 from one side of the sound insulation plate 13 to the other side, so that the wind load acting on the sound insulation plate 13 is reduced.

As described above in detail, in the soundproof wall 10 shown in the first embodiment, the viscoelastic body 15A disposed on the elastic hinge 15 of the sound insulating plate 13 and the side frame 12B of the frame body 12 are opposed when closed. Since the frame 12 and the sound insulation plate 13 are brought into close contact with each other by the vertical sealing member 18 made of a viscoelastic body provided on the side portion of the sound insulation plate 13, the gap between the frame body 12 and the sound insulation plate 13 is passed through. Sound leakage is completely prevented and noise damage can be prevented.
Further, in the soundproof wall 10 shown in the first embodiment, the elastic body 15 is used to open and close the sound insulation plate 13, so that the magnetic body 17 installed between the sound insulation plate 13 and the frame body 12 when in the closed state. In addition, a mechanism that can smoothly rotate the sound insulating plate 13 while the magnet unit 16 is magnetically attracted so as not to leak sound can be realized simply and at low cost.

The soundproof wall 10 shown in the first embodiment described above may be modified as follows.
<< Modification 1 >>
In the elastic hinge 19 of the soundproof wall 10 shown in the first embodiment, the magnet unit support shaft 19A is directly supported by the elastic body 19B as shown in FIG. 5A, and the collar 19E as shown in FIG. 5B. 5A, the magnet unit support shaft 19A is supported in the elastic body 19B. As shown in FIG. 5C, the magnet unit support shaft 19A is directly supported by the elastic body 19B partially disposed around the periphery. As shown by D), various forms such as supporting the magnet unit support shaft 19A by the elastic body 19B partially disposed around the collar 19E can be adopted.

<< Modification 2 >>
The magnet unit 16 of the magnetic force adsorbing body M is not limited to being composed entirely of the magnet 16A, and as shown in FIGS. 6A to 6C, the magnet holder 16B formed as a whole in a rectangular parallelepiped shape. The form which affixes the thin magnet board 16C to a both-ends end surface may be sufficient. At this time, as shown in FIGS. 6B and 6C, the magnet unit 16 appropriately rotates around the magnet unit support shaft 19A of the elastic hinge 19 in accordance with the closing or opening of the sound insulating plate 13. It is good to make it.
Further, the magnet unit 16 and the magnetic body 17 constituting the magnetic force adsorbing body M are not limited to a rectangular parallelepiped shape as a whole, and as shown in FIGS. 7A and 7B, a circular shape as a whole. It may be formed in a columnar shape or a cylindrical shape. Then, by making the entire shape of the magnet unit 16 and the magnetic body 17 into a columnar shape or a cylindrical shape in this way, the magnet unit 16 and the magnetic body 17 are in line contact with each other, and the sound insulating plate 13 is smoothly opened and closed. be able to.

<< Modification 3 >>
The structure shown in FIG. 8A may be in the vicinity of the magnetic adsorption body M of the soundproof wall 10.
That is, the sealing members 41 and 42 shown as the horizontal sealing member in the modified example 3 are formed of a sheet-like elastic material, and the upper surface of the lower frame 12A of the frame 12 that is in a positional relationship facing each other when closed, and the sound insulation On the lower surface of the lower end edge portion 14A located at the lower portion of the main body portion 14 of the plate 13, a space (referred to as space portions 41A and 42A) is formed inside.
A columnar magnet unit 43 is disposed in the space 41A of the sealing material 41 located on the lower side, and is attracted to the magnet unit 43 by a magnetic action in the space 42A of the sealing material 42 located on the upper side. A columnar magnetic body 44 is disposed.
The magnet unit 43 and the magnetic body 44 are fixed to the inner surfaces of the sealing materials 41 and 42 by adhesion or the like. Moreover, although the magnet unit 43 has the whole shape hold | maintained with the magnet holder, it is abbreviate | omitted in drawing.

In the soundproof wall 10 as described above, the seal members 41 and 42 are in contact with each other when the sound insulation plate 13 is closed when the wind is not blowing, and the magnet unit 43 in the seal member 41 is in contact with the seal member 42. By adsorbing the inner magnetic body 44 by a magnetic action, the seal members 41 and 42 are brought into close contact with each other. Thereby, sound leakage is prevented from occurring through the gap between the magnetic body 44 and the magnet unit 43, and noise damage can be prevented.
Further, when strong wind blows and the sound insulation plate 13 rotates about the sound insulation plate support shaft 15A of the elastic hinge 15, the magnetic coupling between the magnet unit 43 and the magnetic body 44 is released, and the sound insulation plate A ventilation space 50 is formed between 13 and the lower frame 12A. As a result, the strong wind blown against the sound insulation plate 13 passes through the ventilation space 50 from one side of the sound insulation plate 13 to the other side, so that the wind load acting on the sound insulation plate 13 is reduced.

  In the sound barrier 10 described above, the space portions 41A and 42A are provided on the upper surface of the lower frame 12A of the frame body 12 and the lower surface of the lower end edge portion 14A of the main body portion 14 of the sound insulating plate 13 which are in a positional relationship facing each other when closed. Seal members 41 and 42 to be formed are installed, and a magnet unit 43 and a magnetic body 44 are disposed in the seal members 41 and 42. Thus, when the sound insulation plate 13 is closed when no wind is blowing, the seal members 41 and 42 come into contact with each other, and the magnet unit 43 and the magnetic body 44 in the seal members 41 and 42 are attracted by a magnetic action. These seal members 41 and 42 are in close contact with each other. Thereby, sound leakage is prevented from occurring through the gap between the magnet unit 43 and the magnetic body 44, and noise damage can be prevented.

In addition, you may change the structure of the soundproof wall 10 shown by this modification 3 as follows.
In the soundproof wall 10, the magnet unit 43 and the magnetic body 44 are respectively fixed to the inner surfaces of the seal members 41 and 42 by adhesion or the like. However, the present invention is not limited to this, as shown in FIGS. 8B to 8D below. You may store in a form.
That is, as shown in FIG. 8B, the magnet unit 43 and the magnetic body 44 in the seal members 41 and 42 may be housed in the seal members 41 and 42 in a free state without being fixed.
8C, the magnet unit 43 in the seal member 41 is fixed to the upper surface of the lower frame 12A of the frame body 12, and the magnetic body 44 in the seal member 42 is fixed to the main body portion 14 of the sound insulating plate 13. You may fix to the lower end edge part 14A lower surface.

Further, as shown in FIGS. 8D and 8E, the magnet unit 43 in the seal member 41 may be provided to be rotatable around a rotation shaft 43A installed therein. As a result, as shown in FIG. 8 (E), when the sound insulation plate 13 is closed when the wind is not strong, the magnet unit 43 in the seal member 41 is appropriately rotated around the rotation shaft 43A by magnetic action (rotates itself). ) And can be attracted to each other at an optimum angle.
In order to realize the state shown in FIG. 8E, the magnet unit 43 is formed in a rectangular parallelepiped shape, and the dimensions of the magnet unit 43 are determined so that the inner surface of the space 41A of the seal member 41 can be rotated. And good.

<< Modification 4 >>
8A to 8E, the magnet unit 43 and the magnetic body 44 are configured in a rectangular parallelepiped shape in cross section, but various other shapes may be set.
For example, the cross-sectional shape shown in FIG. 9A is a perfect circular cylinder, the cross-sectional shape shown in FIG. 9B is an elliptical column, and the cross-sectional shape shown in FIG. 9C is a hemisphere. 9D, the cross-sectional shape as shown in FIG. 9D is a daruma-shaped column, the cross-sectional shape as shown in FIG. 9E is a triangular column, and the cross-sectional shape as shown in FIG. 9G is a polygonal (in this example, pentagonal) columnar shape, and the magnet unit 43 as shown in FIG. 9H has a hemispherical columnar shape. The magnetic body 44 has a columnar shape having a recess that fits in the hemispherical shape, and the magnet unit 43 has a polygonal (pentagonal) cross-sectional shape as shown in FIG. 9I, and the magnetic body 44 has the hemispherical shape. It may be a column having a recess that fits into the shape.

In the third modified example, both the magnet unit 43 and the magnetic body 44 are accommodated in the seal members 41 and 42. However, the present invention is not limited to this, and only one of the magnet unit 43 or the magnetic body 44 is sealed. The remaining magnet unit 43 or the magnetic body 44 may be accommodated in the upper surface of the lower frame 12A of the frame body 12 or the lower surface of the lower edge 14A of the sound insulating plate 13 as it is. Even if only one of the sealing member 41 or the sealing member 42 is brought into contact with and in close contact with the magnetic body 44 or the magnet unit 43, the effect of sealing the gap between the magnetic body 44 and the magnet unit 43 can be obtained. Because.
(Second Embodiment)
Hereinafter, with reference to FIGS. 10-19, the structure of the soundproof wall 20 which concerns on 2nd Embodiment of this invention is demonstrated first.

As shown in FIG. 10, the soundproof wall 20 according to the second embodiment is similar to the soundproof wall 10 according to the first embodiment, and has a frame body 12 having an opening 11 therein, and an opening 11 of the frame body 12. The sound insulating plate 13 is rotatably supported by the frame 12 by an elastic hinge 15.
Between the lower frame 12A of the frame 12 and the sound insulation plate 13, there is disposed a magnetic force adsorbing body M that holds the sound insulation plate 13 in a closed state when the sound insulation plate 13 is closed. The configuration in the vicinity is different from that of the first embodiment.

  The magnetic force adsorbing body M has a magnet unit 16 provided on the lower frame 12A of the frame body 12 and a magnetic body 17 provided on the lower portion of the sound insulating plate 13, but as in the first embodiment. The magnet unit 16 is not swingably supported by the elastic hinge 19 but is fixed on the lower frame 12A of the frame 12.

  Also, as shown in FIG. 10, a viscoelastic body 21 (horizontal sealing member) is provided on the lower surface of the magnetic body 17 that faces the upper surface of the magnet unit 16 when closed. The viscoelastic body 21 is formed to have the same length and width as the magnetic body 17 and is formed in a rectangular shape as a whole. When the sound insulating plate 13 is in a state in which the opening 11 is closed, the viscoelastic body 21 is magnetic. The body 17 and the magnet unit 16 are brought into close contact with each other. As a result, sound leakage is prevented from occurring through the gap between the magnetic body 17 and the magnet unit 16, and noise damage can be prevented from occurring.

  And in the soundproof wall 20 comprised as mentioned above, as shown to FIG. 10 (A), in the state without a wind or the state of a weak wind, the magnet unit 16 passes the magnetic body 17 via the viscoelastic body 21. By adsorbing, the sound insulating plate 13 is in a closed state, that is, a state in which the opening 11 is closed. As a result, noise generated on the railway track is absorbed or shielded by the sound insulation plate 13 and is prevented from diffusing outside. At this time, since the magnetic body 17 and the magnet unit 16 are brought into close contact with each other by the viscoelastic body 21 disposed on the magnetic body 17, sound leakage occurs through the gap between the magnetic body 17 and the magnet unit 16. It is completely prevented and noise damage can be prevented.

  As shown in FIG. 10B, when strong wind blows, the sound insulation plate 13 tries to rotate around the sound insulation plate support shaft 15 </ b> A of the elastic hinge 15. At this time, the wind load applied to the sound insulating plate 13 causes a force to pull the magnetic body 17 and the magnet 16A apart. And in a strong wind state, since the force which is going to separate exceeds the magnetic attraction force of the magnet 16A and becomes a dog, the magnetic body 17 is pulled away from the magnet 16A. Thereby, the sound insulation plate 13 released from the magnetic attraction force of the magnet 16A is turned away from the magnet 16A to be in an open state, that is, a state in which the opening 11 of the frame body 12 is opened. A ventilation space 50 is formed between the sound insulating plate 13 and the lower frame 12A. Then, the strong wind blown to the sound insulation plate 13 passes through the ventilation space 50 from one side of the sound insulation plate 13 to the other side, so that the wind load acting on the sound insulation plate 13 is reduced.

As described above in detail, in the soundproof wall 20 shown in the second embodiment, the magnetic body 17 of the sound insulating plate 13 provided so as to be openable and closable so as to open or close the opening 11 surrounded by the frame 12. Since the viscoelastic body 21 that closely contacts the sound insulating plate 13 and the magnet unit 16 is installed between the magnet unit 16 located in the lower frame 12A of the frame body 12, the viscoelastic body 21 is provided. Therefore, it is possible to prevent sound leakage from occurring through the gap between the magnetic body 17 and the magnet unit 16 installed on the sound insulating plate 13, thereby preventing noise damage from occurring.
In addition, the soundproof wall 20 shown in the second embodiment has a configuration in which the viscoelastic body 21 is disposed on the magnetic body 17, so that it is possible to prevent dirt from adhering to the magnetic body 17.

The soundproof wall 20 shown in the second embodiment described above may be modified as follows.
<< Modification 1 >>
As shown in FIG. 11A, the magnetic force adsorbing body M of the soundproof wall 20 shown in the second embodiment has a case 22 installed on the upper surface of the lower frame 12 </ b> A of the frame 12. You may accommodate so that it can move with respect to case 22 in the state which joined the magnet 16 to the viscoelastic body 21 and its upper part.
In addition, the present invention is not limited thereto, and as shown in FIG. 11B, a recess 23 is formed in the lower portion of the lower end edge portion 14A of the main body 14 of the sound insulating plate 13, and the viscoelastic body 21 and its You may hold | maintain the magnetic force adsorption body M by accommodating with respect to the case 22 in the state which joined the magnetic body 17 to the lower part. The magnet 16 or the magnetic body 17 of the magnetic force adsorbing body M is interposed via the viscoelastic body 21 at the recess 22A formed in the case 22 and the recess 23 formed in the lower end edge 14A of the sound insulating plate main body 14. Is supported by the viscoelastic body 21 and the horizontal direction of the magnet unit 16 and the viscoelastic body 21 is absorbed by the viscoelastic body 21 when the sound insulation plate 13 is opened in a strong wind. Therefore, when the sound insulation plate 13 is swung, the vertical movement of the magnet unit 16 or the magnetic body 17 of the magnetic force adsorbing body M can be stabilized.

<< Modification 2 >>
In the soundproof wall 20 shown in the second embodiment, the viscoelastic body 21 is arranged on the lower surface of the magnetic body 17 constituting the sound insulating plate 13, but the present invention is not limited to this, as shown in FIG. The viscoelastic body 21 may be disposed on the upper surface of the magnet 16A of the magnet unit 16 that faces the lower surface of the magnetic body 17 when closed. The viscoelastic body 21 arranged on the magnet 16A of the magnet unit 16 seals the magnetic body 17 and the magnet unit 16 and prevents dirt from adhering to the magnet 16A of the magnet unit 16. The effect that can be obtained is also obtained.

<< Modification 3 >>
In the soundproof wall 20 shown in the second embodiment, the viscoelastic body 21 is arranged on the magnetic body 17 constituting the sound insulating plate 13, but the present invention is not limited to this, and as shown in FIG. The viscoelastic body 21 is disposed on the lower surface of the magnetic body 17 constituting the sound insulating plate 13 and the viscoelastic body 21 is also disposed on the magnet 16A of the magnet unit 16 that faces the lower surface of the magnetic body 17 when closed. Also good. The magnetic body 17 and the magnet unit 16 are sealed by the magnetic body 17 of the sound insulating plate 13 and the viscoelastic body 21 arranged on the magnet 16A of the magnet unit 16, and the magnetic body 17 and the magnet 16A are sealed. The effect which can prevent that dirt adheres to both of these is also acquired.

<< Modification 4 >>
In the soundproof wall 20 shown in the first modification of the second embodiment, the viscoelastic body 21 is arranged on the magnet 16A of the fixed-side magnet unit 16, and this viscoelastic body 21 is shown in FIG. Thus, a two-layer structure may be used. And the effect which prevents the sound leakage of the soundproof wall 20 can be heightened by the viscoelastic body 21 of the two-layer structure arrange | positioned on the magnet 16A of such a magnet unit 16. FIG. The viscoelastic body 21 is not limited to two layers and may have a multilayer structure of two or more layers.

<< Modification 5 >>
In the soundproof wall 20 shown in the first modification of the second embodiment, the viscoelastic body 21 is disposed so as to be exposed on the magnet 16A of the magnet unit 16, but the present invention is not limited to this. For example, FIG. As shown to (A) and (B), you may provide the closing board 90 along the length direction of the both sides. The closing plate 90 is provided so as to cover the magnet 16A of the magnet unit 16 and the sides of the viscoelastic body 21, and adheres to the magnet 16A and the viscoelastic body 21 and deteriorates the viscoelastic body 21. It has functions such as prevention. The block 90 does not cover the entire side portion of the viscoelastic body 21 on the magnet 16A, and is arranged so that the upper portion of the viscoelastic body 21 is slightly exposed, so that the viscoelastic body 21 and the magnetic body 17 are disposed. It is good to maintain the adhesion at the time of contact.

<< Modification 6 >>
In the soundproof wall 20 shown in the second embodiment, the viscoelastic body 21 is arranged only on the lower surface of the magnetic body 17 of the sound insulation board 13, but the present invention is not limited to this, and as shown in FIG. The viscoelastic bodies 21 may be arranged on both side portions of the 13 main body portions 14. That is, by arranging the viscoelastic body 21 on both side portions and the lower portion of the sound insulating plate 13, the sealing performance of the sound insulating plate 13 at the time of closing can be further enhanced.

(Third embodiment)
The configuration of the soundproof wall 30 according to the third embodiment of the present invention will be described below with reference to FIGS.

It is the configuration of the magnet unit 21 that makes the soundproof wall 30 shown in the third embodiment different in configuration from the soundproof wall 20 shown in the second embodiment.
As shown in FIGS. 17A and 17B, the magnet unit 31 includes a plurality of magnet pieces 32 arranged at regular intervals, and is arranged between the magnet pieces 32 so as to be substantially the same as the magnet pieces 32. A viscoelastic body 33 having a shape and a magnet holder (not shown) that holds the viscoelastic bodies 33 in a columnar shape are installed on the lower frame 12 </ b> A of the frame body 12.

As shown in FIG. 17A, the viscoelastic body 33 brings the magnetic body 17 and the magnet unit 31 into close contact with each other when the sound insulating plate 13 is in the state of closing the opening 11. Sound leakage through the gap between the magnet unit 31 and the magnet unit 31 is prevented, and noise damage is prevented. Further, the viscoelastic body 33 has a structure in which the viscoelastic body 31 is not laminated on the lower surface of the magnetic body 17 of the sound insulating plate 13 or the upper surface of the magnet 16A of the magnet unit 16 as in the first embodiment. The size is not increased.
Further, when a strong wind blows and the sound insulation plate 13 rotates about the sound insulation plate support shaft 15A of the elastic hinge 15, the magnetic coupling between the magnet unit 31 and the magnetic body 17 is performed as in the first embodiment. By being released, a ventilation space 50 is formed between the sound insulating plate 13 and the lower frame 12A. As a result, the strong wind blown against the sound insulation plate 13 passes through the ventilation space 50 from one side of the sound insulation plate 13 to the other side, so that the wind load acting on the sound insulation plate 13 is reduced.

In the soundproof wall 30 shown in the third embodiment as described above, the viscoelastic body 33 having substantially the same shape as the magnet piece 32 is disposed between the plurality of magnet pieces 32. The elastic body 33 prevents the sound leakage from occurring through the gap between the magnetic body 17 installed on the sound insulating plate 13 and the magnet unit 31, thereby obtaining an effect of preventing noise damage. It is done.
In the viscoelastic body 33 shown in the third embodiment, the viscoelastic body 31 is not laminated on the lower surface of the magnetic body 17 of the sound insulating plate 13 or the upper surface of the magnet 16A of the magnet unit 16 as in the first embodiment. Since there is, the effect that it does not enlarge in a height direction is also acquired.

  The soundproof wall 30 shown in the third embodiment described above may be modified as follows.

<< Modification 1 >>
The magnet unit 31 of the soundproof wall 30 shown in the first modification of the third embodiment is provided in a single layer structure on the lower frame 12A of the frame body 12, but is not limited to this, and two layers as shown in FIG. It may be structured. And the effect which prevents the sound leakage of the sound-proof wall 30 can be heightened by such a two-layer magnet unit 31. The magnet unit 31 is not limited to two layers, and may have a multilayer structure of two or more layers.

<< Modification 2 >>
In the soundproof wall 30 shown in the third embodiment and the modification 1 thereof, the magnet unit 31 is arranged so that the side surface along the length direction is exposed. However, the present invention is not limited to this, and for example, FIG. As shown to (B), you may provide the closing board 91 along the length direction of the both sides. The closing plate 91 is provided so as to cover the side of the magnet piece 32 and the viscoelastic body 33 of the magnet unit 31, and adheres to the magnet piece 32 and the viscoelastic body 33, and the viscoelastic body 33. It has functions such as preventing deterioration. In addition, this blockage 91 does not cover the whole side part of the magnet piece 32 and the viscoelastic body 33, but arrange | positions so that the uppermost part of this magnet piece 32 and the viscoelastic body 33 may be exposed a little, so that this viscoelastic body It is good to maintain the adhesion at the time of contact between 33 and the magnetic body 17.

  In the first and second embodiments and the modifications thereof, the arrangement patterns of various viscoelastic bodies 18, 21, and 33 and the seal members 41 and 42 are shown. It is possible to combine them.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  The present invention relates to a soundproof wall installed for the purpose of absorbing and blocking noise.

DESCRIPTION OF SYMBOLS 10 Soundproof wall 11 Opening part 12 Frame 12A Lower frame 13 Sound insulation board 15 Elastic hinge 15A Sound insulation board support shaft 15B Elastic body (sealing member)
15C Casing 15D Axis 16 Magnet unit 16A Magnet 17 Magnetic body 18 Viscoelastic body (vertical sealing member)
19 Elastic hinge 19A Magnet unit support shaft 19B Elastic body 19C Casing 19D Axis 19E Color 20 Soundproof wall 21 Viscoelastic body (horizontal / vertical sealing member)
22 Case 22A Concave part 23 Concave part 30 Soundproof wall 31 Magnet unit 32 Magnet 33 Viscoelastic body (horizontal sealing member)
41 sealing member 41A space 42 sealing member (horizontal sealing member)
42A Space part 43 Magnet unit 44 Magnetic body (magnetic body)
90 Blocking plate 91 Blocking plate M Magnetic adsorption body

Claims (14)

A sound insulation plate that is rotatably supported in the frame body via a sound insulation plate support shaft, and is provided to open or close an opening surrounded by the frame body;
A magnetic force adsorber that is disposed between the lower frame of the frame and the sound insulation plate and holds the sound insulation plate in a closed state when the sound insulation plate is closed;
A soundproof wall characterized in that a sealing member is provided on at least one of the sound insulating plate or the magnetic force adsorbing member to bring the frame body and the sound insulating plate into close contact with each other.   The sealing member is an elastic body arranged around the sound insulation plate support shaft and rotatably supporting the sound insulation plate support shaft, and an elastic hinge is constituted by the elastic body and the sound insulation plate support shaft. The soundproof wall according to claim 1, wherein:   The magnetic force adsorbing body is composed of a magnetic body and a magnet unit that adsorbs the magnetic body, and is disposed between the sound insulating plate and the lower frame of the frame that are opposed to each other when closed. The soundproof wall according to any one of claims 1 and 2.   The magnet unit of the magnetic force adsorbing body is disposed in a lower frame of the frame body, and is swingably supported by the frame body via a magnet unit support shaft. The sound barrier described.   The said sealing member is arrange | positioned as a horizontal sealing member in the opposing surface of the magnetic body of the said magnetic force adsorption body and magnet unit which mutually oppose at the time of closure, The Claim 1 characterized by the above-mentioned. The sound barrier described. The sealing member is disposed as a horizontal sealing member in the recess of one of the sound insulating plate and the lower frame of the frame,
The soundproof wall according to any one of claims 1 to 4, wherein the magnetic force adsorbing body is disposed on the horizontal sealing member and between the sound insulating plate and a lower frame of the frame body. .   The soundproof wall according to claim 5, wherein the horizontal sealing member is formed in a multilayer structure.   The soundproof wall according to any one of claims 5 to 7, wherein a blocking plate that protects the horizontal sealing member is disposed on a side portion along a length direction of the horizontal sealing member. The magnet unit has a plurality of magnet pieces arranged at regular intervals,
The soundproof wall according to claim 5, wherein the horizontal sealing member is disposed between magnet pieces of the magnet unit.   The soundproof wall according to claim 5, wherein the horizontal sealing member is formed of a sheet-like seal member and is disposed so as to form a space portion therein.   The soundproof wall according to claim 10, wherein a magnet unit and a magnetic body of the magnetic force adsorbing body are disposed in a space portion of the seal member.   The soundproof wall according to claim 11, wherein the magnet unit and the magnetic body housed in the space of the seal member have various shapes.   The said sealing member is further arrange | positioned as a vertical sealing member between the both sides of the said sound insulation board which mutually oppose at the time of closing, and the said frame. The sound barrier described.   The soundproof wall according to any one of claims 5 to 10 or 13, wherein the horizontal sealing member or the vertical sealing member is formed of a viscoelastic body having viscoelasticity.