Method for manufacturing soundproof wall unit and soundproof panel

Abstract

To provide an acoustic insulation wall unit which prevents diffusion of noise and can be easily disassembled and reassembled.SOLUTION: A plurality of acoustic insulation boards 100a to 100g having main surfaces are arranged so that their main surfaces are flush with one another and are connected with connecting tools 200a to 200g. When gaps occur, they are blocked with acoustic insulation bags 600A to 600C of which volume increases according to an injection rate of air, thus structuring an acoustic insulation wall unit. Each of the plurality of acoustic insulation boards 100a to 100g includes a plate body having a waterproof surface, and an acoustic isolation sheet fixed to a surface opposite the waterproof surface of the plate body. Exposed surfaces of the acoustic insulation boards and the plate body are covered with a first fabric material having vibration absorbing property, such as a punching carpet.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a soundproof wall unit and a soundproof panel that can be temporarily installed near a noise source to prevent the noise from diffusing to the surrounding area and that can be easily disassembled and reassembled. [Background technology]

[0002] As a technique for preventing noise from diffusing to the surroundings, for example, a soundproof panel described in Patent Document 1, a vibration-proof material described in Patent Document 2, and a sound-absorbing mat described in Patent Document 3 are known. The soundproof panel described in Patent Document 1 includes a frame body having a connection part formed on the edge part for connecting the panels together and covering the noise source, a reinforcing material provided in an appropriate position within the frame body, an iron plate layer provided under the reinforcing material, a concrete layer poured on the lower surface of the iron plate layer, and a sound-absorbing layer provided on the lower surface of the concrete layer with an air layer between them. The vibration-proof material described in Patent Document 2 includes a plurality of vibration-proof rubbers arranged at a predetermined interval, and a synthetic resin foam and a plate material or a mesh material are laminated and arranged in the interval parts, and the vibration-proof rubbers, the synthetic resin foam, and the plate material or the mesh material are integrally formed. The sound-absorbing mat described in Patent Document 3 is configured by surrounding a sheet-like material having sound absorbing properties or sound absorbing and insulating properties with natural or synthetic fabric, and reinforcing the edge part of the fabric surrounding the sheet-like material with a reinforcing material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-032400 A [Patent Document 2] Japanese Patent Application Publication No. 09-242314 [Patent Document 3] Japanese Patent Application Publication No. 11-022055 Summary of the Invention [Problem to be solved by the invention]

[0004] At the site of interior construction work of buildings, soundproof walls are often installed or moved depending on the work location. In addition, during work, noises of various frequencies are mixed, such as the impact sound when power tools are operated, the impact sound when metal building materials collide with each other, and the voice of the worker. The soundproof panel described in Patent Document 1 is composed of an iron plate layer and a concrete layer, so although it has high rigidity, it is difficult to change the size or move it once installed, and is not suitable for temporary use. The vibration-proof material described in Patent Document 2 is also similar, and since it is composed of vibration-proof rubber, synthetic resin foam, and plate material or net material integrally, it is difficult to move it after installation, and is not suitable for temporary use. In addition, the sound-absorbing mat described in Patent Document 3 is simply reinforced with a reinforcing material at the edge of the fabric surrounded by a sheet-like material, so it is difficult to obtain sufficient rigidity for use as a soundproof wall.

[0005] The main object of the present invention is to provide a soundproof wall unit that can be temporarily installed in any size near noise sources of various frequencies to prevent the diffusion of noise and that can be easily disassembled and reassembled. Another object of the present invention is to provide a method for manufacturing soundproof panels that are the main components of the soundproof wall unit. Other objects of the present invention will become clear from the embodiments described below. [Means for solving the problem]

[0006] One embodiment of the present invention is a soundproof wall unit formed by arranging a number of soundproof panels having main surfaces so that the main surfaces are on the same plane, wherein each of the plurality of soundproof panels includes a plate body having a water-resistant surface and a soundproof sheet fixed to the surface of the plate body opposite the water-resistant surface, and the soundproof sheet and the exposed surface of the plate body are covered with a first base material having thermal insulation and vibration-proofing properties.

[0007] Another embodiment of the present invention is a method for manufacturing a soundproofing panel, comprising: a first step of creating a composite sheet by laminating a sound-absorbing material to a sound-insulating sheet made of rubber, resin, or a combination of these; a second step of fixing the created composite sheet to a surface opposite to a water-resistant surface of a wooden plywood having a water-resistant surface; and a third step of covering the water-resistant surface and edge surfaces of the wooden plywood and the surface of the sound-insulating sheet with a first base material having thermal insulation and vibration-proofing properties. Effect of the Invention

[0008] According to the present invention, the water-resistant surface of the board (e.g., wooden composite) that constitutes the soundproof panel, the sound-insulating sheet (e.g., a sheet made of rubber, resin or a combination of these), and the first base material with insulating and vibration-proofing properties prevent the diffusion of noise of various frequencies, and since the soundproof wall unit is made up of multiple soundproof panels, there is the exceptional effect of facilitating disassembly and reassembly. [Brief description of the drawings]

[0009] [Figure 1] 1A is a perspective view of the soundproofing board of this embodiment, FIG. 1B is a top view of the main surface viewed from above, FIG. 1C is an explanatory diagram of the structure of the side surface of the soundproofing board, and FIG. 1D is an explanatory diagram of the structure of the end surface of the soundproofing board. [Diagram 2] FIG. 2 is a process diagram for manufacturing a soundproof panel. [Diagram 3] FIG. 1A is a plan view of a connector used in this embodiment, (b) and (c) are diagrams showing various bent states of the connector, and (d) is a diagram showing the connected state of adjacent soundproofing panels. [Figure 4] 1A is a front view of the soundproof belt used in this embodiment, FIG. 1B is a back view, and FIG. 1C is a side view. [Diagram 5] (a) is a right side view of a long-sized filling bag, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a back view. [Figure 6] (a) is a right side view of a short-sized filling bag, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a back view. [Figure 7] 1A is a top view of the soundproof bag used in this embodiment, and FIG. [Figure 8] FIG. 2 is an explanatory diagram of the structure of a soundproof bag. [Figure 9] FIG. 2 is a diagram showing one aspect of the soundproof wall unit of the present embodiment. [Figure 10] FIG. 13 is a diagram showing another aspect of the soundproof wall unit of the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, an example will be described in which the present invention is applied to a soundproof wall unit that is temporarily installed to surround a work site where various sounds including sounds of frequencies other than audible sounds, such as impact sounds when using electric tools, motor sounds, collision sounds of metal members, and voice sounds of workers, occur suddenly, for example, at a site of interior construction work of a building. The soundproof wall unit of this embodiment is composed of a plurality of soundproof boards, a flexible filling bag, a soundproof bag for sealing gaps, and a connector used as necessary to connect adjacent soundproof boards to each other so that they can be freely detached.

[0011] <Soundproofing board> Fig. 1(a) is a perspective view of a soundproof board 100 according to this embodiment, (b) is a top view of the main surface (wide surface) viewed from above, (c) is a structural explanatory diagram of the side surface of the soundproof board 100, and (d) is a structural explanatory diagram of the end surface of the soundproof board 100. Referring to Figs. 1(a) and (b), the soundproof board 100 is a rectangular or approximately rectangular panel body with a vertical (long side) size of the wide surface, which is the main surface, W11, a horizontal (width) size of H11, and a height (thickness) size of D11. These vertical and horizontal sizes W11 and H11 may be small sizes that become the basic size of a plywood board (910 mm x 1820 mm) when multiple sheets are used. In addition, multiple sheets with the same vertical and horizontal sizes W11 and H11 are manufactured, and in that case, it is desirable to make the thickness D11 approximately the same. In addition, in FIGS. 1(c) and 1(d), for the convenience of explaining the structure, the members that are in contact with each other in reality are shown separated from each other, and therefore are shown as being larger than the thickness D11 of the actual soundproof panel 100.

[0012] The soundproof panel 100 has as its base material a plate 11 having such high rigidity that it will not deform even if it is hit by tools, metal parts, etc. The plate 11 can be made of wood (e.g., lauan) plywood 112, the wide surface of which is a water-resistant surface 111. The wood plywood 112 is manufactured to standard length and width dimensions by heating and pressing multiple types of wood with different sound absorption rates, transmittance rates, or reflection coefficients, and has a higher rigidity and sound absorbing / blocking effect than a single-ply board of the same thickness.

[0013] In addition, the water-resistant surface 111 is coated with a water-resistant paint containing a hardener after the exposed surface of the plywood structure of the wooden plywood is polished, and has the effect of blocking the passage of perpendicular incident sound and reflecting sound incident at angles other than perpendicular. Of the reflected sounds, the sound pressure of the sound that returns to the wooden plywood 112 is attenuated and eventually disappears. The board 11 may be made by coating the surface of a general wooden plywood with a water-resistant paint, but it is also possible to use a wooden concrete panel (hereinafter abbreviated as "concrete panel"), which is a plywood for concrete formwork, cut to a predetermined size. The concrete panel may be one used in concrete manufacturing work, which can improve the cost performance of soundproofing. In the following explanation, the board 11 may be called a concrete panel 11.

[0014] The soundproof panel 100 can be manufactured, for example, through the process shown in FIG. 2. First, a plywood panel 11 of a predetermined size, for example, a size obtained by cutting the basic size of the plywood panel 11 (910 mm×1820 mm) into an integer fraction, is set on a workbench. If necessary, a countersunk nut (registered trademark) is driven into the corners of the four end faces or wide faces (S101). The countersunk nut is used to assemble a soundproof room by connecting multiple soundproof panels 100 at a predetermined angle to the main face, or to reinforce the connector 200 described later. By using the countersunk nut, it becomes possible to disassemble and reassemble the panel any number of times without destroying the component structure.

[0015] Once the plywood 11 of a given size has been set on the workbench, the sheet-like soundproof rubber mat 12 is cut to fit the length and width of the plywood 11 (S102). A commercially available product can be cut to size for the soundproof rubber mat 12. The soundproof rubber mat 12 can be one that blocks the passage of sound and has a thickness that absorbs vibrations caused by sound pressure applied to the surface, particularly low-frequency sounds below 900 Hz.

[0016] Also, cotton-like glass wool 13 is wrapped in glass cloth 14, which is then laminated on the exposed surface of the soundproof rubber mat 12 to create a composite sheet (S103). The glass wool 13 can be made of a material (commercially available product) that absorbs vibration waves of various frequencies transmitted from various directions with random sound pressure, particularly sounds of various frequencies above 900 Hz, with a sound absorption rate of 90% or more. The glass cloth 14 absorbs sound by itself, but also serves to mold the glass wool 13 into a square prism shape on the plate 11. The glass wool 13 and the glass cloth 14 can be made of materials with different sound absorption rates.

[0017] The glass cloth 14 may completely encase the glass wool 13, or may encase the glass wool 13 in a sheet shape with its wide portion exposed. The composite sheet thus produced functions as a composite sound-absorbing material that effectively absorbs sounds incident from various directions with various frequencies and sound pressures. Therefore, the propagation of sound inside and outside the composite sheet can be effectively prevented.

[0018] The composite sheet prepared as described above is fixed to the surface (rear surface) opposite to the water-resistant surface 111 (front surface) of the plywood 11 (S104). As a result, the plywood 112, the soundproof rubber mat 12, the glass wool 13, and the glass cloth 14 are laminated in this order on the water-resistant surface 111 of the plywood 11, which serves as the base layer, and sound vibrations and transmission of the vibrations near the plywood 11, as well as sound passing through the front and back surfaces of the plywood 11 are more reliably prevented.

[0019] Next, an end punched carpet 15 is attached to the end face of the plywood 11 (S105). The end punched carpet 15 prevents sound from entering from the end and from leaking to the outside. The end punched carpet 15 may be made of the same heat insulating and vibration resistant fabric material as the back punched carpet 16 and the front punched carpet 17 described below, or may be made of a different type of fabric material. Alternatively, a soundproof rubber sheet or other insulating sheet may be attached, or the end punched carpet 15 may be coated with a water resistant paint.

[0020] Next, the back surface and all edge surfaces of the plywood 11 are covered with a back surface punched carpet 16, and the edge of the back surface punched carpet 16 is extended to the vicinity of the edge surface of the plywood 11, and then secured with tucker needles 101 (S106). The exposed portion of the front surface of the plywood 11 is covered with a front surface punched carpet 17, and secured with tucker needles 101 (S107). The tucker needles 101 are driven into the plywood 11 so that each exposed portion is in a straight line on the same plane as the exposed portions of the adjacent needles 101, except for the corners of the plywood 11. At this time, driving the needles 101 at intervals such that the length of the exposed portion of each needle 101 is shorter than the length of the exposed portion of the adjacent needles 101 is effective in preventing the perforated carpets 16, 17 from peeling off and the diffusion of sound. Each of the punch carpets 16, 17 may be fixed with nails or wedges instead of the staples 101 of a tacker.

[0021] The underside punched carpet 16 and the surface punched carpet 17 are nonwoven carpets with intertwined fibers, and the surface of the carpet is a fabric material to which a hook-shaped processed sheet fabric material (second fabric material) described later is attached in a peelable manner. As long as the fabric material to which such a processed sheet fabric material is attached has heat insulating properties, fabric materials other than punched carpets can also be used.

[0022] Finally, cut a cross shape near the eye nut with a cutter (S108). When using an eye nut, roll up the cut part. When not using an eye nut, return the cut part to its original position so that the eye nut is not exposed.

[0023] The soundproof board 100 manufactured as described above uses the plywood 11 as the base material, the water-resistant surface 111 as the sound-proofing material, and the wooden plywood 112 as the sound-absorbing material, so it has high rigidity and can function as a wall by itself. In addition, the soundproof rubber mat 12 suppresses the diffusion of low-frequency sounds below 900 Hz, and the glass wool 13 and glass cloth 14 absorb audible frequency sounds above 900 Hz, so there is no need to use expensive soundproofing materials, and soundproofing performance relative to manufacturing costs can be significantly improved. Furthermore, it is possible to assemble a soundproof wall unit of any size by arranging multiple soundproof panels 100 so that their main surfaces are on the same plane, or to form a part of a soundproof room by connecting multiple soundproof walls three-dimensionally. Also, since the soundproof wall unit can be disassembled and reassembled by each soundproof panel 100, temporary construction work can be greatly simplified.

[0024] In this embodiment, an example has been described in which the soundproof rubber mat 12 is used as the soundproof sheet. However, instead of the soundproof rubber mat 12, a synthetic resin plate such as an acrylic plate or a plastic plate may be used.

[0025] <Connector> Next, a connector used for connecting a pair of adjacent soundproofing panels 100 on the same plane will be described. FIG. 3(a) is a plan view of a connector 200 according to this embodiment. This connector 200 can be easily made from a single metal plate, for example, a rectangular steel plate. That is, as shown in FIG. 3(a), a flat area 203 having a pair of long sides 2031, 2032 facing each other at an interval equal to the thickness of the soundproofing panel 100 is formed from approximately the center of the long side of the metal plate in parallel with the short side. Also, in an upper area of ​​the metal plate that is relatively above the flat area 203 and a lower area that is relatively below the flat area 203, three sides excluding the long sides 2031, 2032 are cut out at a predetermined distance from the outer edge toward the inside. The areas other than the cutout parts are frame-shaped.

[0026] For convenience, the frame-shaped region in the upper region is called the first frame region 201. Also, the region whose outer edge is the cut-out portion of the upper region is called the first cut-out region 204. Similarly, the frame-shaped region in the lower region is called the second frame region 202. Also, the region whose outer edge is the cut-out portion of the lower region is called the second cut-out region 205.

[0027] In the metal plate, the first frame region 201 and the second frame region 202 may be bent in a first direction, for example, vertically upward, or in a second direction, for example, vertically downward, with respect to the flat region 203. However, the first cutout region 204 is bent in the opposite direction with respect to the first frame region 201, and the second cutout region 205 is bent in the opposite direction with respect to the second frame region 202. FIG. 3(b) shows an example in which the first frame region 201 is bent in a first direction relative to the planar region 203, the first cutout region 204 is bent in a second direction relative to the planar region 203, the second frame region 202 is bent in the second direction relative to the planar region 203, and the second cutout region 205 is bent in the first direction relative to the planar region 203. Fig. 3(c) shows an example in which the first frame region 201 is bent in a first direction relative to the flat region 203, the first cutout region 204 is bent in a second direction relative to the flat region 203, the second frame region 202 is bent in the first direction relative to the flat region 203, and the second cutout region 205 is bent in the second direction relative to the flat region 203. Note that the bending may be performed in a manner in which the up-down direction in Fig. 3(b) is reversed.

[0028] In either case, a pair of first bent pieces extending in a first direction from one long side and the other long side of the flat area 203, respectively, facing each other, and a pair of second bent pieces extending in a second direction from one long side and the other long side of the flat area 203, respectively, facing each other, are molded, and one of two adjacent soundproofing boards is sandwiched between the pair of first bent pieces, and the other of two adjacent soundproofing boards is sandwiched between the pair of second bent pieces. Fig. 3(d) is a front view showing a state in which two adjacent soundproofing boards 100A, 100B are connected. The first frame area 201 holds the front side of one soundproofing board 100A, and the first cutout area 204 holds the front side of the other soundproofing board 100B.

[0029] By using the connector 200 having such a structure, the pair of soundproof panels 100A, 100B whose end faces face each other can be easily connected or removed. Even if the soundproof panels 100A, 100B have different vertical and horizontal sizes, as long as they have the same thickness, they can be connected to each other to easily assemble or remove a soundproof wall unit in which the main surfaces of the soundproof panels 100A, 100B are flush with each other.

[0030] 3(a) and (d) show an example in which the metal plate is a rectangular steel plate, but the shape of the metal plate may be a circle, an ellipse, a triangle, a polygon with five or more sides, or other shapes. The size may also be arbitrary. Furthermore, the first frame region 201 and the second frame region 202, the first cutout region 204 and the second cutout region 205 may each have a different shape. Furthermore, after being connected, the soundproof panels 100 may be temporarily fixed to each other with screws or the like.

[0031] <Soundproof belt> Next, referring to FIG. 4, the soundproof belt 300 according to this embodiment will be described. FIG. 4(a) is a front view of the soundproof belt 300, FIG. 4(b) is a back view, and FIG. 4(c) is a side view. The soundproof belt 300 has a front and back surface processed into a long bag shape. The front surface side can use the same fabric material (first fabric material) 301 of the same color as the back surface punched carpet 16 or the front surface punched carpet 17 of the soundproof board 100. The back surface side can use a processed sheet fabric material (second fabric material) 302 that is raised into a hook shape and removably attached to the surface of the back surface punched carpet 16 or the front surface punched carpet 17. A fastener 303 is provided in the approximate center of the processed sheet fabric material 302. The fastener 303 is provided to fill a rubber sheet, a soft acrylic sheet, a glass cloth, or the like in the cavity between the front surface and the back surface of the soundproof belt 300 to adjust its thickness. The position of the fastener 303 in FIG. 4 is an example, and it may be provided in another position. Also, other fasteners may be used in place of the fastener 303. Alternatively, a configuration may be used in which a rubber sheet, glass cloth, or the like is stuffed into the cavity and then sewn in place without using a fastener.

[0032] The soundproof belt 300 thus constructed has a vibration-proofing effect by its fabric material itself, but by filling the inside with a rubber sheet or the like, the sound pressure of the incident sound can be reduced and the diffusion of the incident sound can be suppressed. Therefore, even if a small gap occurs between a pair of adjacent soundproof boards 100, the soundproof belt 300 can close the gap and prevent the soundproof performance of each soundproof board 100 from being reduced. In addition, since the front side of the soundproof belt 300 is made of the first fabric material 301 of the same color as each soundproof board 100, the gap can be covered and concealed. In addition, since the processed sheet fabric material 302 on the back side of the soundproof belt 300 is a fabric material that can be peelably attached to the first fabric material 301, the gap can be easily covered and concealed, and further, the soundproof belt 300 can be used in a laminated state.

[0033] <Refill bag> In some cases, pipes for intake and exhaust or hoses for water supply and drainage are provided in a part of a soundproof wall unit, and the location of these pipes and hoses cannot be changed. In addition, when an existing wall is converted into a soundproof wall unit, piping may be provided in the wall. In this embodiment, a filling bag will be described that blocks the periphery of pipes, hoses, piping, etc. to prevent sound leakage, etc., when such pipes, hoses, piping, etc. are present.

[0034] 5 and 6 are explanatory diagrams of the structure of the refilling bag 500 of this embodiment, where (a) is a right side view, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a rear view. Since Fig. 5 and Fig. 6 have the same structure except for the size, the same reference numerals are used for convenience.

[0035] The replenishing bag 500 has a bag body 501 made of a flexible third fabric material having a substantially parallelogram shape when viewed from the right side or the left side. The third fabric material may be pile carpet, but from the viewpoint of emphasizing flexibility, a thinner cotton-acrylic blend, polyester-cotton blend, cotton-linen blend, or the like may be used. The size of the bag body 501 shown in FIG. 5 is 910 mm in the longitudinal direction and 70 mm in width. The size of the bag body 501 shown in FIG. 6 is 455 mm in the longitudinal direction and 70 mm in width. At least one of a sound absorbing material and a sound insulating material is filled inside the bag body 501. The sound absorbing material may be a polyester material (commercially available) having a sound absorption rate of 90% or more at a frequency of 900 Hz or more. The sound insulating material may be a sheet material (commercially available) in which a high specific gravity component is mixed with an olefin resin.

[0036] The front end of the bag body 501 is provided with an inclined portion 5011 and a non-inclined portion 5012. The rear end of the bag body 501 is provided with an inclined portion 5013 and a non-inclined portion 5014. The inclined portions 5011 and 5013 are provided to reduce the gap in the center when the bag body 501 is wound in a spiral shape from the center to the outer periphery and to reduce the deviation of the outer periphery diameter. The inclined portions 5011 and 5013 are also provided to form a ring of approximately the same diameter when the ends are opposed to each other. The non-inclined portions 5012 and 5014 are also provided to make it difficult for the inner corners to be cut into the bases of the inclined portions 5011 and 5013 when the filling bag 500 is wound. In the illustrated example, the non-inclined portions 5012 and 5014 are corners, but since the filling bag 500 is filled with a sound absorbing material or the like, in reality, they have a shape close to an R shape.

[0037] The filling bag 500 thus constructed is used to fill gaps around a pipe or the like that exists in the center of a rectangular parallelepiped space surrounded by a number of soundproof walls 100, for example. The relatively long filling bag 500 shown in Fig. 5 is often used by wrapping it around a pipe or the like in a spiral shape, but because a pair of ends are inclined portions 5011, 5013, respectively, it is possible to reduce the gap at the beginning of the wrapping around the pipe or the like. Even at the outermost end, it is possible to reduce the gap between the end face of the soundproof wall 100. In addition, the spiral or annular shape can be maintained by the non-inclined portions 5012 and 5014. Therefore, sound transmitted to the filling bag 500 through the piping is absorbed by the sound absorbing or insulating material filled in the bag body 501, and the sound is prevented from diffusing to the surroundings of the piping.

[0038] <Soundproof bag> Next, a description will be given of the soundproof bag 600 according to this embodiment. The soundproof bag 600 is configured to include a bag body that enters into gaps that cannot be completely blocked by the above-mentioned soundproof panel 100 and changes in volume depending on the amount of fluid that has entered through the fluid intake mechanism.

[0039] Fig. 7(a) is a top view of an elastic tube (rubber tube in this example) 601, which is a main component of a soundproof bag 600, and Fig. 7(b) is a side view. Fig. 8 is an explanatory diagram of the structure of the soundproof bag 600. In this embodiment, an example is given in which compressed air is used as the fluid. The bag body is mainly configured by abutting a sound absorbing material 612 and a sound insulating sheet 613 around a rubber tube 601, inside which an air-filled space 610 is formed, and then covering the entire bag with a first fabric material (punch carpet) 602 of the same color as that used in the soundproof panel 100.

[0040] The rubber tube 601 has a rectangular shape when viewed from above as shown in Fig. 7(a) and a substantially elliptical shape when viewed from the side as shown in Fig. 7(b). Both ends of the rubber tube 601 are sealed with rubber plates 605 and 606.

[0041] A fluid intake mechanism is attached to a predetermined portion of the rubber tube 601. In this embodiment, the fluid intake mechanism includes an American valve 604 as a main component. The American valve 604 is a valve with the same structure as those used in American automobiles and motorcycles, and is commercially available as a valve with a structure that can withstand an air pressure of 300 to 600 kPa. That is, a spring is attached to the plunger (valve body), and the valve is opened and closed by the expansion and contraction force of the spring. It is said to be highly durable, has the least air leakage and is excellent in air retention compared to English valves and French valves.

[0042] In this embodiment, a valve base 6040 is fixed to the inside of a rubber tube 601 via an internal rubber packing 6042, and an external rubber packing 6043, a washer 6044, and a spring washer 6045 are inserted between the valve base 6040 and the valve stem 6041 on the outside of the rubber tube 601, and the valve base 6040 is fastened and fixed with a nut 6046. The valve stem 6041 is L-shaped, and is fixed with a nut 6047 to the output part of an air compressor (not shown).

[0043] The size of the rubber tube 601 is arbitrary, but as an example, the length L71 in the longitudinal direction is approximately 910 mm, which corresponds to the width of the basic size of the plywood 11, the length (protrusion amount) L72 of the rubber plates 605, 606 is 15 mm, the length L73 from the tip of one of the rubber plates 605 to the mounting position of the American valve 604 is 150 mm, and the thickness D71 is 6 mm.

[0044] When soundproof bag 600 with this structure is in its initial state after the air has been deflated, its size is only the thickness of rubber tube 601, sound absorbing material 612, and shielding sheet 613. In this initial state, when American valve 604 is brought to the front and set into a narrow gap, and compressed air is then injected through American valve 604, soundproof bag 600 expands and closes the gap. When disassembling, the air is deflated to return it to its initial state, and when reassembling, compressed air is injected as described above.

[0045] <Use of soundproofing panels, etc.> Next, usage of the above-mentioned soundproof panel 100 etc. will be described. FIG. 9 is a diagram showing one aspect of the soundproof wall unit of this embodiment, illustrating a partial example of a soundproof wall unit in which eleven soundproof panels 100a to 100k are connected and abutted against the surface of an existing wall of a building. Here, the soundproof boards 100a-100d and 100e-100h are the same size, but the soundproof boards 100i-100k are the same height but smaller width. Although not necessarily required, the connectors 200a-200c that connect the soundproof boards 100a-100d and the connectors 200e-200g that connect the soundproof boards 100e-100h are the same size, but the connectors 200h, 200i that connect the soundproof boards 100i-100k are slightly smaller in size. Also, gaps are generated between the smaller soundproofing plates 100i to 100k and the larger soundproofing plates 100e to 100h. Therefore, three soundproofing bags 600A to 600C of different lengths are fitted in the gaps and expanded by compressed air through a US valve 604 to close the gaps. Also, in the upper part of the figure, there is an existing pipe 900. Since the periphery of this pipe 900 cannot be sealed with the soundproof panel 100, the periphery of the pipe 900 is sealed by wrapping a supplementary bag 500 around it.

[0046] Fig. 10 shows an example in which soundproof belts 300A-300F are attached to the soundproof wall unit of Fig. 9. In the case of Fig. 9, depending on the frequency and sound pressure of the incident sound, there is a risk of leakage from the joints of the soundproof plates 100a-100h and the gaps in the soundproof bags 600A-600C. In addition, the connectors 200a-200g are also exposed, leaving a patchwork feel. Therefore, in the example of Fig. 10, soundproof belts 300A-300F are attached to the joints, and other soundproof belts 300G-300L are attached on top of these soundproof belts 300A-300F. The soundproof belts 300A-300L are punch carpets of the same color and material as the soundproof panels 100a-100h, so the soundproof wall unit can be used as a single soundproof wall without any sense of incongruity. In the example of Fig. 10, the soundproof belt 300 is not attached to the portion of the filling bag 500 near the piping 900, but by using a soundproof belt 300 of a size that partially overlaps the soundproof panels 100a, 100i, and 100e surrounding the filling bag 500, the exposed area of ​​the filling bag 500 can be reduced.

[0047] In this manner, according to this embodiment, a number of soundproofing panels 100 that prevent the diffusion of sounds of various frequencies are connected in a freely detachable manner with connecting devices 200, and soundproofing belts 300 are attached in a freely peelable manner to any gaps that arise when the panels are connected, and if the gap is large it is sealed with a soundproofing bag 600, and if a pipe 900 is present, the area around it is sealed with a filling bag 500, thereby preventing the diffusion of noise of various frequencies and realizing a soundproof wall unit that is easy to disassemble and reassemble. It goes without saying that the manner in which the soundproof panel 100, the connector 200, the filling bag 500, and the soundproof bag 600 are used is not limited to the manner shown in FIGS. Moreover, a soundproof wall unit using the soundproof panel 100 of this embodiment can be used as a soundproof wall not only at construction sites but also in homes and offices.

Claims

1. A soundproof wall unit comprising a plurality of soundproof panels each having a main surface, the main surfaces of which are arranged on the same plane, A soundproof wall unit in which each of the plurality of soundproof panels includes a plate body having a water-resistant surface and a sound-insulating sheet fixed to the surface of the plate body opposite the water-resistant surface, and the sound-insulating sheet and the exposed surface of the plate body are covered with a first fabric material having thermal insulation and vibration-proofing properties.

2. The sound-proof sheet is made of rubber or resin.

2. The soundproof wall unit according to claim 1.

3. A sound absorbing material is interposed between the sound insulation sheet and the first fabric material.

3. A soundproof wall unit according to claim 1 or 2.

4. The soundproof belt has a front and back surface, a second fabric material is provided on the back surface side so as to be releasably attached to any portion of the first fabric material, and the first fabric material is provided on the front surface side. A soundproof wall unit according to any one of claims 1 to 3.

5. Further comprising a connector for connecting adjacent soundproofing panels to each other, The connector is a molded product of a single metal plate, and has a planar region having a pair of long sides opposed to each other with an interval of the thickness of the soundproof panel; a pair of first bent pieces extending in a first direction from one long side and the other long side of the planar region, respectively, and facing each other; a pair of second bent pieces extending in a second direction from one long side and the other long side of the planar region, respectively, and facing each other; One of the two adjacent soundproofing panels is sandwiched between the pair of first folded pieces, and the other of the two adjacent soundproofing panels is sandwiched between the pair of second folded pieces. A soundproof wall unit according to any one of claims 1 to 4.

6. The flexible bag body has a shape of a parallelogram when viewed from the side, and is filled with at least one of a sound absorbing material and a sound insulating material. A soundproof wall unit according to any one of claims 1 to 5.

7. a soundproof bag having a fluid intake mechanism, which enters into gaps that cannot be completely blocked by the soundproof panel and whose volume changes according to the amount of fluid that enters through the fluid intake mechanism, the soundproof bag being made by wrapping an elastic tube having at least one of a sound absorbing material and a sound insulating material on its outer surface, the sound absorbing material and the sound insulating material in the first fabric material; A soundproof wall unit according to any one of claims 1 to 6.

8. A first step of preparing a composite sheet by laminating a sound absorbing material onto a sound insulation sheet made of rubber, resin or a combination of these; A second step of fixing the prepared composite sheet to a surface opposite to the water-resistant surface of a wooden plywood having a water-resistant surface; and a third step of covering the water-resistant surface, the end surface and the surface of the sound-insulating sheet of the wooden plywood with a first base material having heat insulating and vibration-proof properties. A method for manufacturing soundproofing panels.

Images