JP2004257204A - Sound suppression structure of opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound suppression structure of an opening/closing device, which can expect a higher degree of silence at the time of opening/closing an opening/closing body and the like. <P>SOLUTION: The shutter curtain, which serves as the opening/closing body of a shutter device serving as the opening/closing device, has a slat curtain part 11 which is formed by continuously providing a plurality of slats 12. While a front side 12A, on the side of an outdoor space L2, of each of the slats 12, which are turnably connected together by curled parts 13 and 14 serving as connecting parts, is formed as a slat skin surface, a backside 12B on the side of an indoor space L1 is formed as an implanted surface which is provided with many piles 15. When the curtain part 11 is wound up by means of a wind-up member of the shutter device, the occurrence of an unusual noise is reduced by virtue of the sound suppression effect of the pile 15 because the implanted surface of the slat 12 is brought into contact with the skin surface of the other slat 12. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sound damping structure for reducing abnormal sounds such as opening and closing sounds generated when an opening and closing body of an opening and closing device moves to and from an immovable body, for example, a shutter device, a swing door device, and a sliding door device. And so on.
[0002]
[Background Art]
In a slat-type shutter device in which a shutter curtain, which is an opening and closing body, is a slat curtain portion formed by rotatably connecting a plurality of slats, the shutter curtain has a shutter that opens and closes. The slat curtain portion is wound and unwound with respect to the winding member by being guided by a guide rail which is immovable with respect to the curtain. One of two adjacent slats rotates with respect to the other. Since this rotation is performed by contacting the rotatably connected connecting portions of the respective slats, there is a possibility that abnormal noise is generated at this time. In order to suppress the generation of the abnormal noise, in Patent Document 1 below, a cushioning material made of a resin film is laminated on the connecting portion.
[0003]
[Patent Document 1]
JP-A-10-184231 (Claims, FIGS. 1, 6 and 7)
[0004]
[Problems to be solved by the invention]
According to the technique of Patent Document 1, since the connecting portion is rotated without the metals, which are the materials of the slats, coming into direct contact with each other by the buffer material made of the resin film, it is possible to suppress the generation of large noise. In recent years, as one of the performances required for the shutter device, there is a higher degree of quietness when opening and closing the shutter curtain, and a new technology that can meet this demand is required.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a sound control structure of an opening / closing device that can expect higher quietness when opening / closing an opening / closing body.
[0006]
[Means for Solving the Problems]
The sound control structure of the opening / closing device according to the present invention is an opening / closing device including an opening / closing body that opens and closes and an immovable body that is immovable with respect to the opening / closing body. At least one of a first member that forms one of the first member and a second member that forms one of the open / close body and the immovable body and contacts the first member contacts at least the other. It is a flocked member in which a large number of piles are provided.
[0007]
According to the sound control structure of this opening / closing device, since a large number of piles are provided in at least one of the first member and the second member that are in contact with each other, at least one of the first member and the second member is in contact with each other. Generation of a large noise due to contact with the other and the noise generation suppression member, since the noise generation suppression member is a hair or a hair-like member, can exert a greater noise suppression effect than a cushioning material made of a resin film. Thus, higher quietness can be expected.
[0008]
In the sound control structure of the opening and closing device, the first member may be a member of the opening and closing member, and the second member may be a member of the opening and closing member. The first member is a member of the opening and closing member and the second member is immovable. The first member may be an immovable member and the second member may be an opening / closing member. The first member may be an immovable member and the second member may be immovable. It may be a body member.
[0009]
The first example of the above four examples is not limited to the case where the opening / closing body is formed by a combination of a plurality of members, and the opening / closing body is formed of, for example, a large-area sheet. The first member and the second member may include a part where the same member is present and another part where the part is in contact with another part of the same sheet.
[0010]
A fourth example of the above four examples is, for example, a case where the immovable body is a storage case for storing the opening / closing body, and the storage case is formed by combining a plurality of members. However, when the opening and closing movement of the opening and closing body and the like, there is a slight shift between these members due to fine vibrations and the like, and there is a possibility that abnormal noise may occur due to this slight shift made in a state where they are in contact with each other. , And at least one of the two members that come into contact with each other is the flocked member.
[0011]
The immovable body in the present invention is a member or an object that is immovable in the sense that it does not open and close with respect to the opening and closing body that opens and closes. A rotating member or the like that rotates is included in the immovable body in the present invention. Therefore, for example, the opening / closing member is wound by a winding member that rotates forward and backward, and the winding member in the opening / closing device that is a shutter curtain that is fed out is an immovable body, and rotates the opening / closing movement of the shutter curtain. The guide shaft of the opening / closing device having the guide shaft for guiding while moving is also an immovable body.
[0012]
As described above, in the present invention, the first member and / or the second member serving as the flocked member may be a member forming an open / close body or a member forming an immovable body. When the opening / closing member moves and opens and closes, and there is a higher possibility of generating abnormal noise than the immovable member, the first member or the second member serving as the flocked member or these members By forming both of them as members forming the opening / closing body, it is possible to expect a greater noise suppression effect.
[0013]
Furthermore, the opening and closing body is a shutter curtain that is opened and closed by winding by a winding member, and the shutter curtain has a slat curtain portion formed by connecting a plurality of slats in a freely rotatable manner. In this case, when these slats are used as the flocked member, the generation of abnormal noise in the slat curtain portion can be effectively reduced by the noise control effect of the flocked member.
[0014]
In the case where each slat forming the slat curtain portion of the shutter curtain is used as a flocked member, at least one of the front surface and the back surface of each slat is provided with a large number of piles provided with the pile. A surface may be provided, and a plurality of piles may be provided on at least one of the connecting portions that are rotatably connected to each other and contact and rotate in two adjacent slats, and these requirements may be satisfied simultaneously. That is, at least one of the front surface and the back surface of each slat is a flocking surface provided with a large number of piles, and the two slats adjacent to each other are rotatably connected to each other so as to be in contact with each other. A large number of piles may be provided on at least one of the connecting portions.
[0015]
When at least one of the front surface and the back surface of each slat is a flocking surface provided with a large number of piles, when the slat curtain is wound by the winding member, the slats are wound. Even if they come into contact with each other, generation of abnormal noise due to this contact can be reduced on the flocked surface.
[0016]
Also, if a large number of piles are provided on at least one of the connecting portions of two adjacent slats which are rotatably connected to each other and rotate in contact with each other, the slat curtain portion is wound up by the winding member. Even when the connecting portion of these slats is rotated while contacting when it is unwound from the winding member, the contact rotation is performed through a large number of piles. Generation of abnormal noise can be reduced.
[0017]
In addition, at least one of the front surface and the back surface of each slat is a flocking surface provided with a large number of piles, and the two slats adjacent to each other are rotatably connected to each other so as to be in contact with each other. If a large number of piles are provided on at least one of the connecting portions, the above two effects can be achieved simultaneously.
[0018]
As described above, in the case where the opening / closing member is a shutter curtain that is wound by the winding member and fed out, the type and structure of the winding member are arbitrary. Specifically, the winding member may be formed by connecting a single shaft or a plurality of shafts in series, and the shutter curtain is wound around an outer periphery of a fixed shaft arranged at the center. The rotating member for feeding out may be rotatably arranged. In the latter, the rotating member includes a plurality of wheels rotatably fitted on the outer periphery of the fixed shaft, and a bar-shaped connection or the like connecting the wheels arranged apart from each other in the axial direction of the fixed shaft. It may be formed to include members, or may be formed to include these wheels, and a pipe-shaped member fixedly fitted to the outer periphery of these wheels and connecting the wheels to each other.
[0019]
Further, when the opening and closing body is a shutter curtain, the unmovable body is a guide rail for guiding the opening and closing movement of the shutter curtain by inserting the end in the width direction of the shutter curtain slidably. A large number of piles may be provided on at least a portion of the rail that comes into contact with the width direction end of the shutter curtain.
[0020]
According to this, when the width direction end of the shutter curtain inserted into the guide rail is opened and closed while being guided by the guide rail, the width direction end of the shutter curtain and the shutter curtain on the guide rail Even if the end portion in the width direction comes into contact with the facing portion, at least this portion of the guide rail is a flocked portion provided with a large number of piles, so that generation of large abnormal noise due to the contact can be suppressed.
[0021]
In this case, a large number of piles may be provided at least in the width direction end of the shutter curtain, and a structure may be employed in which both the flocking portions of the guide rail and the shutter curtain face each other.
[0022]
In the present invention described above, the shutter curtain is wound by a winding member, and is a non-winding shutter device, such as an unwinding shutter device, such as an overhead door. Shutter device that opens and closes while being slightly deformed into a curved shape or the like, and a shutter device in which each shutter curtain forming member formed of a panel or the like is folded while being connected when the shutter curtain is stored or stacked while being separated from each other. Also applicable to
[0023]
Further, the shutter curtain may be entirely or substantially entirely formed of slats, may be formed of panels, may be formed of sheets, or may be formed of pipes connected by links. Well, it may be formed of a net, or may be a composite of a plurality of members of different types, for example, a composite of a plurality of these members, such as a slat and a pipe.
Further, the shutter device to which the present invention is applied may be a device for opening and closing an opening such as an entrance or a window with a shutter curtain, and a shutter curtain may be used in a structure such as a building or a ship like a disaster prevention shutter device. For forming an area such as a disaster prevention section. Further, the shutter device may be a garage shutter device or a shutter device installed on a bed of a vehicle such as a truck.
[0024]
Further, the present invention can be applied to an automatic shutter device in which the opening and closing movement of the shutter curtain is performed by a driving force of an electric motor or the like, or to a manual shutter device manually performed. A shutter device in which the downward movement, which is the movement, is performed by the weight of the shutter curtain, and the upward movement, which is the opening movement, is performed by a driving unit such as an electric motor, and the closing movement is performed by a manual operation or an automatic driving device such as an electric motor. At the same time, the opening movement can also be applied to a shutter device or the like that is operated manually or by an automatic driving device such as an electric motor using the spring force of the return spring accumulated during the closing movement as an auxiliary force.
[0025]
The opening and closing movement direction of the shutter curtain may be a vertical direction, a horizontal direction, or a direction inclined with respect to the vertical direction or the horizontal direction.
[0026]
Further, the present invention can be applied to an opening / closing device other than the shutter device, for example, an opening / closing device such as a hinged door device, a sliding door device, and an awning device. In the case where the present invention is applied to a hinged door device or a sliding door device, the immovable body in these devices is, for example, an outer frame body that forms an opening portion that is opened and closed by the hinged door body or the sliding door body.
[0027]
Further, in the present invention, the member forming the opening / closing body or the immovable body and serving as the flocked member is a material provided with a large number of piles since the material before the processing such as bending is performed. The material may be obtained by performing a process such as bending on this material, or a number of piles may be provided by a fixing operation such as bonding after the process such as bending or at the same time as the process. May be used.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing the entirety of a shutter device serving as the opening / closing device according to the present embodiment. This shutter device is opened and closed by a shutter curtain 2 serving as an opening and closing body that moves up and down an opening 1 that is an entrance of a building. The upper end of the shutter curtain 2 is connected to a horizontal take-up member 4 whose both ends are rotatably supported by a pair of brackets 3, and the take-up member 4 is located above the opening 1. 5 is housed inside. A switch 6 composed of a combination of an electric motor and a brake is attached to one of the pair of brackets 3, and the switch 6 and the winding member 4 are connected by a transmission means 7 such as a chain and a sprocket. The shutter curtain 2 is wound and unreeled with respect to the winding member 4 by the forward and reverse rotation of the winding member 4 due to the forward and reverse driving of the electric motor performed by releasing the shutter. Perform some vertical movement.
[0029]
Guide rails 9 attached to a building frame 8 such as a wall or a pillar of a building are provided on both left and right sides of the opening 1, and these guide rails 9 which are immovable with respect to the shutter curtain 2 are provided. The shutter curtain 2 is slidably inserted at both left and right ends, which are ends in the width direction. Therefore, the opening and closing movement of the shutter curtain 2 is performed while the left and right ends are guided by the guide rail 9.
[0030]
The shutter curtain 2 is formed by a seat plate 10, which is a tip member on the closing side, and a plurality of slats 12 connected in the opening and closing movement direction of the shutter curtain 2 and connected to the upper end of the seat plate 10. The shutter curtain 2 is fully closed when the seat plate 10 is placed on the floor 1 </ b> A of the opening 1 and the slat curtain portion 11 is connected to the winding member 4.
[0031]
Each slat 12 forming the slat curtain portion 11 occupying most of the area of the shutter curtain 2 is made of metal, and FIG. 2 shows a cross section of the slat curtain portion 11 formed by these slats 12. FIG. 2 is a sectional view taken along line S2-S2 of FIG. As shown in FIG. 2, the slats 12 are rotatably connected to both ends of the shutter curtain 2 in the opening and closing direction of the slats 12, in other words, to both upper and lower ends of the slats 12. Curl portions 13 and 14 are formed. The lower curl portion 13 of the upper slat 12 is rotatably engaged inside the upper curl portion 14 of the lower slat 12, and the slat curtain portion 11 is formed by the continuation of this connection structure. Are connected to each other.
[0032]
In FIG. 2, L1 is an indoor space of a building partitioned by the shutter curtain 2, and L2 is an outdoor space. A large number of piles 15 are provided on the back surface 12B of each slat 12 facing the room space L1 when the shutter curtain 2 is unreeled from the winding member 4 and is fully closed. Therefore, this back surface 12B is a flocking surface. On the other hand, the surface 12A of each of the slats 12 facing the outdoor space L2 is formed of a metal, which is a material of the slats 12, or a slat surface on which a coating film formed by plating or painting is coated. It has become.
[0033]
FIG. 3 is an enlarged sectional view of the slat 12. An adhesive layer 16 is provided on the back surface 12B side of the slat 12, and a large number of piles 15 made of synthetic resin bristle members or hair-like members are implanted on the back surface 12B of the slat 12 via the adhesive layer 16.
[0034]
In FIG. 2, the upper curl portion 14 of each slat 12 is curved by opening toward the outdoor space L2, and the lower curl portion 13 of each slat 12 inserted and engaged inside the curl portion 14. Is curved on the outdoor space L2 side, opening downward. For this reason, for each of the slats 12 in the slat curtain section 11, of the upper and lower two slats 12 connected to each other by the curl sections 13 and 14, the flocking surface of the lower curl section 13 in the upper slat 12 and the lower The upper and lower two slats 12 are connected to each other by the upper slat 12 facing the slat surface of the upper curl portion 14.
[0035]
As described above, each of the slats 12 having the entire back surface 12B as a flocked surface is produced by processing a metal material, which has one surface previously formed as a flocked surface, into a slat shape. More specifically, a coiling device having one surface formed as a flocked surface is fed out from an uncoiler and cut into a predetermined length, and the cut piece is formed into a multi-stage forming roller. Then, each cut piece is formed into a slat 12 having the cross-sectional shape shown in FIG. 2, and thereafter, the respective slats 12 are connected to each other by connecting the curled portions 13 and 14. For example, “Fiber Coat” (trade name, manufactured by Fiber Coat Co., Ltd.) can be used as the coil material that has one surface formed as a flocked surface in advance.
[0036]
When the shutter curtain 2 which is fully closed or semi-closed is wound up by the winding member 4 and the slat curtain portion 11 is wound by the winding member 4, the back surface 12B of the slat 12 forming the slat curtain portion 11 is formed. And the surface 12A of the other slats 12 come into contact with each other. According to this embodiment, the front surface 12A is a slat ground surface, but the back surface 12B is a flocked surface provided with a large number of piles 15, so that contact between these slats reduces generation of abnormal noise. And a high degree of quietness when the shutter curtain 2 is opened can be realized.
[0037]
In addition, when the slat curtain portion 11 is configured to be wound around the winding member 4 with the back surface 12B of each slat 12 facing the winding member 4, a plurality of slats for the first winding are provided. 12, the back surface 12B comes into contact with the winding member 4 and is wound by the winding member 4. Since the back surface 12B is a flocked surface, generation of a loud noise when the slats 12 and the winding member 4 come into contact with each other is generated. Can be suppressed.
[0038]
In addition, the surface of the winding member 4 with which the back surface 12B of the slat 12 contacts may be a flocked surface, and according to this, generation of abnormal noise can be more effectively suppressed.
[0039]
Further, when the slat curtain portion 11 is wound on the winding member 4 and when the slat curtain portion 11 is unwound from the winding member 4, each slat 12 forming the slat curtain portion 11 is in relation to other adjacent slats 12. The curl portions 13 and 14 are rotated while the curl portions 13 and 14 are in contact with each other. According to this embodiment, as described above, the curl portions 13 and 14 Since the flocked surfaces of the piles 15 are in contact with each other, this rotation can be performed while generating the noise control effect by the large number of piles 15.
[0040]
FIG. 4 shows an embodiment in which the surface of the slat facing the outdoor space L2 side is a flocked surface. That is, a large number of piles 15 are provided on the surface 22A of each slat 22 forming the slat curtain portion 21 according to this embodiment facing the outdoor space L2 side. In this embodiment, the upper curl portion 24 of each slat 22 opens and curves toward the outdoor space L <b> 2, whereas the upper curl portion 24 of each slat 22 inserts and engages inside the curl portion 24. The lower curl portion 23 of 22 is curved toward the outdoor space L2 side, opening upward. For this reason, these curled portions 23 and 24 which are connecting portions for connecting the upper and lower two slats 22 have their flocking surfaces facing each other.
[0041]
Therefore, according to this embodiment, when the slat curtain portion 21 is wound up on the winding member 4 and when the slat curtain portion 21 is unwound from the winding member 4, the rotation generated between the adjacent slats 22 is curled. Since the rotation is performed by the contact rotation between the flocked surfaces of the portions 23 and 24, a greater noise suppression effect can be produced.
[0042]
Also in this embodiment, the surface 22A of each slat 22, which is a flocking surface, is wound around the winding member 4 toward the winding member 4, so that the first one by the winding member 4 is formed. At the time of winding the plurality of slats 22 in the slat curtain portion 21 for the winding, generation of abnormal noise can be suppressed.
[0043]
As in the above embodiments, the flocked surface provided on the slat may be the back surface of the slat facing the indoor space L1 or the surface of the slat facing the outdoor space L2. Then, for example, in the nighttime when the shutter curtain is fully closed, it is possible to prevent dew from attaching to the flocking surface on the surface facing the outdoor space L2 side and prevent the flocking surface from being damaged by external force or the like. .
[0044]
As described above, the flocking surface provided on the slat may be the entire surface of the slat, the entire back surface, or both the front surface and the back surface.
[0045]
The flocked surface provided on the slat may be a part of the front surface of the slat, a part of the back surface, or both the front surface and the back surface. Surface and the other part may be a flocked surface.
[0046]
5 and 6 show an embodiment in which attention is paid only to the noise generated when one of the slats adjacent to each other rotates relative to the other, and this noise is reduced.
[0047]
The embodiment of FIG. 5 corresponds to the embodiment of FIG. 2, and the upper curl portion 34 of the lower slat 32 is opened toward the outdoor space L2 and is curved, and the lower slat 32 is below the upper slat 32. The curl portion 33 on the side is the outdoor space L2 side and is opened downward and curved. Then, of the rear surface 32B of the upper slat 32 facing the room space L1, only the lower curl portion 33 inserted and engaged inside the upper curl portion 34 of the lower slat 32. It has a flocked surface.
[0048]
Thus, the upper and lower two slats 32 are rotated while the flocking surface of the curl portion 33 and the ground surface of the curl portion 34 are in contact with each other.
[0049]
The embodiment of FIG. 6 corresponds to the embodiment of FIG. 4, and the upper curl portion 44 of the lower slat 42 is open to the outdoor space L2 and curved, but the lower curl of the upper slat 42 is curved. The curl portion 43 on the side is the outdoor space L2 side and is opened upward and curved. And, of the surface 42A of the upper slat 42 facing the outdoor space L2 side, a portion of the lower curl portion 43 inserted and engaged inside the upper curl portion 44 of the lower slat 42, Of the surface 42A of the upper slat 42 facing the outdoor space L2, the curl portion 44 is a flocking surface.
[0050]
Thus, the upper and lower two slats 42 are rotated while the flocking surfaces of the curled portions 43 and 43 are in contact with each other.
[0051]
In each of the embodiments described above, the slats forming the shutter curtain are used as the flocking members. However, FIG. 7 shows an immovable shutter guide for moving the shutter curtain with respect to the shutter curtain that opens and closes. It is a plane sectional view showing an embodiment in which a guide rail serving as a body is used as a flocked member.
[0052]
The left and right ends 52A of the shutter curtain 52 are slidably inserted into the left and right guide rails 59. Each of the guide rails 59 is provided with an end portion 52A and a facing portion 59A facing the shutter curtain 52 in the thickness direction. A large number of piles 15 are provided on the facing portion 59A toward the end portion 52A. Is provided. Therefore, the facing portion 59A is a flocking surface.
[0053]
The shutter curtain 52 opens and closes while the end portion 52A contacts the facing portion 59A, and this contact is made via the pile 15, so that the metal which is the material of the shutter curtain 52 and the guide rail 59 comes into direct contact with each other. Therefore, generation of a loud noise at the time of opening and closing movement of the shutter curtain 52 is suppressed.
[0054]
The end 52A of the shutter curtain 52 may also be a flocked surface so that the shutter curtain is opened and closed while the flocked surfaces are in contact with each other.
[0055]
Further, as in the embodiment of FIG. 7, in the case where a flocked surface is provided on an immovable body that is immovable with respect to the shutter curtain, the front surface or the back surface of each slat forming the shutter curtain or both surfaces thereof are: It may be a flocked surface, or may be a ground surface instead of a flocked surface. Furthermore, the connection part of each slat may be formed by the contact between the flocking surfaces, may be formed by the contact between the flocking surface and the ground surface, or may be formed by the contact between the ground surfaces.
[0056]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the effect that higher quietness at the time of opening / closing of an opening / closing body etc. can be expected is acquired.
[Brief description of the drawings]
FIG. 1 is a front view showing the entirety of a shutter device as an opening / closing device according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line S2-S2 of FIG.
FIG. 3 is an enlarged sectional view of the slat shown in FIG. 2;
FIG. 4 is a view similar to FIG. 2 showing an embodiment in which the surface of the slat facing the outdoor space side has a flocked surface;
FIG. 5 is an enlarged cross-sectional view of a main part of a slat according to a first embodiment for reducing only the abnormal noise generated when one of the slats adjacent to each other rotates with respect to the other; FIG.
FIG. 6 is an enlarged cross-sectional view of a main part of a slat according to a second embodiment for reducing only the abnormal noise generated when one of the slats adjacent to each other is rotated with respect to the other. FIG.
FIG. 7 is a plan sectional view showing an embodiment in which a guide rail serving as an immovable body for guiding the movement of the shutter curtain is used as a flocked member.
[Explanation of symbols]
1 opening
2,52 shutter curtain
4 Winding member
6 Switchgear
9,59 Guide rails that are immobile
11 Slat curtain
12 slats
13, 14, 23, 24 Curl portion as connection portion
15 pile

Claims (6)

An opening / closing device configured to include an opening / closing body that opens and closes and an immovable body that is immovable with respect to the opening / closing body, wherein a first member that forms one of the opening / closing body and the immovable body; A flocked member having at least one of a second member that forms one of the opening and closing body and the immovable body and that contacts the first member, and a plurality of piles provided at least in a portion that contacts the other member; The sound control structure of the switchgear, which is characterized in that: The sound control structure for a switchgear according to claim 1, wherein the flocked member is a member forming the switchgear. In the sound control structure of the opening / closing device according to claim 2, the opening / closing body is a shutter curtain that is wound by a winding member, and is opened and closed by unreeling, and the shutter curtain includes a plurality of slats serving as the flocked members. A sound control structure for an opening and closing device, comprising a slat curtain portion formed so as to be rotatably connected. 4. The flocked surface provided with the plurality of piles, wherein at least one of a front surface and a back surface of each slat forming the slat curtain portion is provided on the sound control structure of the switchgear according to claim 3. The sound control structure of the switchgear, characterized in that: 4. The sound control structure for a switchgear according to claim 3, wherein the plurality of piles are provided on at least one of the connecting portions of two adjacent slats which are rotatably connected to each other and rotate in contact with each other. The sound control structure of the switchgear, characterized in that: In the sound damping structure of the opening / closing device according to claim 1, the opening / closing body is a shutter curtain, and the immovable body is slidably inserted at an end of the shutter curtain in a width direction to open and close the shutter curtain. A sound guide structure for an opening / closing device, which is a guide rail for guiding, and wherein the plurality of piles are provided at least in a part of the guide rail that comes into contact with a width direction end of the shutter curtain.

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