JP2014181461A - Soundproof panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof panel that improves sound insulation performance by preventing resonance while achieving weight saving and that increases strength by uniformizing load bearing performance.SOLUTION: A core material 3, in which a plurality of plate materials 6 along a facing direction of a set of surface plates 2 and 2 parallel to each other are combined together, and a core frame material 4 surrounding an outer peripheral part are arranged between the surface plates 2 and 2. In the core material 3, a space sandwiched between both the surface plates 2 and 2 is divided into a large number of small spaces 7 enclosed with the plate material 6. Pieces 5a and 5b of packing are provided on the outer surface of the core frame material 4.

Description

  The present invention relates to a soundproof panel, and more particularly to a soundproof panel in which a core material is disposed so as to be sandwiched between a pair of surface plates.

  In recent years, soundproof panels have been used in buildings such as apartment houses and office buildings to prevent sound leakage to the outside. This soundproof panel has a structure in which a core material is disposed so as to be sandwiched between a pair of surface plates, and is lightweight and has high strength.

  As this type of soundproof panel, for example, a floor foundation panel in Patent Document 1 is known. This floor foundation panel is used for a floor structure supported by a plurality of anti-vibration support legs, and the area on the support board of the anti-vibration support legs is solid, and the other areas are parallel to the floor surface. A plurality of cavities are formed. According to this, the vibration energy propagated from the impact point of the floor base panel is reflected at the boundary between the cavity forming region and the solid region, and repeatedly passes through the cavity forming region to be attenuated, and the vibration energy and acoustic energy transmitted to the slab. Can be reduced.

Japanese Patent Laid-Open No. 2004-239061

By the way, it is known that when a vibration is applied to a specific object from the outside, the amplitude rapidly increases due to a resonance phenomenon as the vibration approaches the natural frequency of the object. In order to shield the sound with the soundproof panel, it is important to prevent this resonance.
However, in the floor foundation panel of Patent Document 1, since a plurality of cavities are formed at regular intervals in a direction parallel to the floor surface, this long cavity plays a role like a tube, depending on its length. When a sound with a different frequency is transmitted, it tends to resonate, and as a result, the sound is amplified and the sound insulation performance tends to deteriorate. Since it is a long cavity, it is particularly likely to resonate with low-frequency sound having a long wavelength.
In addition, since the core material arranged inside has a waveform in which peaks and valleys are alternately arranged, the load resistance varies depending on the location on the upper surface of the surface plate of the panel. In the groove portion to be formed, the load resistance is weakened because the back surface of the front plate is hollow.

  The present invention has been made in view of such circumstances, and provides a soundproof panel that improves resonance by preventing resonance while reducing weight, and improves strength by uniformizing load bearing performance in the surface. For the purpose.

  In the soundproof panel of the present invention, a core material formed by combining a plurality of plate materials along a facing direction of these surface plates is disposed between a pair of surface plates parallel to each other, and the core material is sandwiched between both surface plates. The space is divided into a large number of small spaces surrounded by the plate material.

Since the small space partitioned by the core material between both surface plates is a closed space surrounded by the plate material, the resonance phenomenon when sound is transmitted to the panel is suppressed by the small space and escapes from the outer periphery of the panel Is prevented. This air space in the closed space improves soundproofing, and in particular, resonance at low frequencies is prevented, sound amplification is suppressed, and sound insulation performance is improved.
In addition, the core material disposed between the two surface plates is dispersed and disposed at a plurality of locations between the two surface plates, and the plate material is disposed along the opposing direction of the two surface plates. The strength with respect to the load applied in the vertical direction is large, each part of the surface plate is uniformly supported, and the load resistance performance in the plane direction is made uniform. For this reason, when using this panel as a flooring, a heavy article can be supported without choosing an installation place.
As the shape of the core material, a lattice shape, a honeycomb shape, a geometric pattern shape, or the like can be adopted, and those in which small spaces are evenly distributed in the plane direction are preferable.

In the soundproof panel of the present invention, it is desirable that a core frame member that closes between both surface plates is provided on the outer peripheral portion along the outer peripheral direction.
When the soundproof panels are arranged side by side with the structure described in Patent Document 1, there is a possibility that a gap is generated between these panels, and a sound that resonates from this gap leaks, and the sound insulation is likely to be lowered.
With the structure of the present invention, by providing the core frame material on the outer peripheral portion, the small space disposed on the outer peripheral portion can also be a closed space, and sound leakage can be reliably prevented, and the soundproof panels can be connected to each other. Even when they are arranged, the small space does not communicate with the gap between the panels, so that the sound insulation performance can be further improved.

In the soundproof panel of the present invention, a long packing may be provided on the outer surface of the core frame member along the outer peripheral direction.
When a plurality of soundproof panels are arranged vertically and horizontally, a gap between adjacent soundproof panels is closed by packing, sound leakage to the outside is prevented, and sound insulation performance is improved.

In the soundproof panel of the present invention, the surface plate may be formed in a rectangular shape, and the packing may be provided so as to be shifted in the thickness direction by two sides arranged at opposite corners of the surface plate.
By arranging the packings in this way, when the panels are arranged, the packings are in contact with each other by arranging the packings arranged in the opposing portions of the adjacent panels so as to have a positional relationship shifted in the thickness direction. The occurrence of peeling due to this is avoided. In particular, since the packings do not overlap each other when the panel is fitted from above, the peeling of the packing is prevented, and at the same time, the friction at the time of contact is reduced, so that the panel is easily fitted and workability is improved.
In addition, an air layer can be formed between the packings of adjacent panels, and this air layer produces a sound absorbing action, further improving the sound insulation performance.

In the soundproof panel of the present invention, a layered packing may be provided on one of the surface plates so as to cover the outer surface.
By providing a layered packing on the mounting surface side of the soundproof panel, the gap with the external contact surface is closed by this packing, and the soundproof panel and the external contact surface are brought into close contact with each other for high precision mounting without rattling. It becomes possible.

Furthermore, in the soundproof panel of the present invention, it is desirable that the surface plate and the core material are formed of different materials, and the pair of surface plates may be formed of different materials.
As a result, the natural frequency of the surface plate, the core material, and the pair of surface plates is changed, so that it is difficult to resonate when vibration is generated by sound, and sound insulation is improved in a wide frequency range.

  According to the soundproof panel of the present invention, while reducing the weight, the space sandwiched between both surface plates is divided into a large number of small spaces by the core material, and each small space is a closed space that hardly resonates with sound. Thus, resonance can be prevented and the sound insulation performance can be improved. Moreover, between the surface plates can be evenly reinforced by the core material formed by combining the plate materials along the opposing direction of the surface plates, and uniform load resistance can be exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS (a) which shows the soundproof panel of 1st Embodiment of this invention is a top view, (b) is a side view. It is a top view which expands and shows the corner | angular part of the soundproof panel of FIG. FIG. 2 is a perspective view showing a partially broken soundproof panel of FIG. 1. (A) which shows the core material and core frame material after removing the surface board of the soundproof panel of FIG. 1 is a top view, (b) is a side view. It is sectional drawing which shows the laying condition of a soundproof panel in order of (a) (b). It is a top view in the middle of laying. It is the partially broken top view which shows the soundproof panel of 2nd Embodiment.

Hereinafter, embodiments of the soundproof panel of the present invention will be described with reference to the drawings.
The soundproof panel 1 of the first embodiment is used, for example, as a flooring or the like when a soundproof room is divided into a room and constructed as shown in FIG. The core material 3 and the core frame material 4 are sandwiched between the surface plates 2 and 2, and packings 5a and 5b are provided on the outer peripheral portion.

  The surface plate 2 is formed in a rectangle of an appropriate size, for example, a square, for example, using wood such as particle board or plywood, or resin such as plastic. These surface plates 2 and 2 are arranged in parallel to each other, and the core material 3 is provided in the space between the surface plates 2 and 2.

  The core material 3 is formed of, for example, a material such as cardboard, wood, or injection molded plastic. In the example shown in FIGS. 1 and 4, the plurality of plate materials 6 are combined in a lattice pattern with a constant interval. The plate members 6 are arranged in a direction perpendicular to the two surface plates 2 and 2 by arranging the surface directions of the plate members 6 along the opposing direction of the two surface plates 2 and 2. The core material 2 divides a space between the surface plates 2 and 2 into a plurality of small spaces 7 with a constant interval. These small spaces 7 constitute a closed space whose periphery is surrounded by the plate material 6 of the core material 3 except for those disposed on the outer peripheral portion of the soundproof panel 1. The small space 7 of the core material 3 is desirably smaller so that a sound with a large wavelength is not easily formed. Also, by making the small space 7 small, the arrangement pitch of the plate members 6 is also reduced, and this soundproofing. This is advantageous in improving load bearing performance when the panel 1 is used as a flooring material.

  The core frame member 4 is made of wood or the like, similar to the surface plate 2, and is provided along the outer circumferential direction of the pair of surface plates 2, 2. The space between the four sides is closed. By providing the core frame material 4, the small space 7 in the outer peripheral portion described above can be surrounded by the plate material 6 of the core material 3 and the core frame material 4 to form a closed space.

  The packings 5a and 5b are formed in a long shape according to the length of the side of the surface plate 2 with a porous material such as polyurethane foam, and are provided on the outer surface of the core frame member 4 along the outer peripheral direction of the panel. Yes. The packings 5a and 5b are attached to the core frame member 4 by, for example, a double-sided tape, and can close a gap between adjacent soundproof panels 1 when a plurality of soundproof panels 1 are arranged.

As shown in FIG. 3, the packings 5 a and 5 b are provided at the same height along two orthogonal sides of the four sides of the soundproof panel 1, but two sides arranged at opposite corners. The two side packings 5a arranged at one corner are close to one of the surface plates 2 (the upper surface of the soundproof panel 1) and arranged at the other corner. The two side packings 5b are close to the other surface plate 2 (the lower surface of the soundproof panel 1).
Further, a laminar packing 8 formed by laminating a porous material such as foamed polyurethane on one surface of the surface plates 2 and 2 is provided in a laminated state.

  When assembling the soundproof panel 1 configured in this way, first, as shown in FIG. 4, the core frame material 4 is temporarily assembled into a quadrangular frame and formed into a size that fits within the frame of the core frame 4. The core material 3 is fixed. Then, a pair of surface plates 2 and 2 are bonded to both sides of the core material 3. Further, as shown in FIG. 3, the packings 5 a and 5 b are attached to predetermined positions on the outer surface of the core frame member 4, and the layered packing 8 is attached to one surface of the surface plates 2 and 2.

When this soundproof panel 1 is used as a flooring, as shown in FIGS. 5 and 6, for example, a plurality of soundproof panels 1 are arranged side by side on a floor frame 11.
The floor frame 11 is composed of a frame material 12 formed into a frame shape with an appropriate metal and an anti-vibration rubber 13 affixed to the back surface of the frame material 12. Performance is further enhanced.
The soundproof panel 1 is provided with a layered packing 8 on one side. By laying the layered packing 8 on the floor frame 11, errors in the dimensional accuracy of the floor frame 11 and the soundproof panel 1 are layered. Air propagation sound between the soundproof panel 1 and the floor frame 11 can be more reliably prevented by being absorbed by the packing 8 and closing the gaps generated in these.

When laying a plurality of soundproof panels 1 on the floor frame 11, the packings 5a and 5b on the outer periphery of the soundproof panel 1 are disposed so as to be shifted in the thickness direction, and therefore, as shown in FIGS. Thus, it is good to arrange | position so that the packing 5a arrange | positioned at the upper surface side of the adjacent soundproof panel 1 may overlap with the packing 5b arrange | positioned at the lower surface side among packing 5a, 5b of the soundproof panel 1 laid previously. .
By laying in this way, the packings 5a and 5b of the soundproofing panels 1 do not come into contact with each other, and peeling due to the rubbing of the packings 5a and 5b can be prevented. Can be laid side by side.

In the laid state of the soundproof panel 1, in each soundproof panel 1, the space between the pair of surface plates 2 and 2 is partitioned into a large number of small spaces 7 by the core material 3 and the core frame material 4. This suppresses the sound transmitted to the floor from resonating in the soundproof panel 1. In this case, not only the small space 7 in the core material 3 but also the small space 7 disposed on the outer peripheral portion of the core material 3 is closed by the core frame material 4 without being opened to the outside. The small space 7 becomes a closed space, and the occurrence of the resonance phenomenon can be effectively suppressed.

  In addition, between the soundproof panels 1, the packings 5 a and 5 b disposed on the outer periphery of the adjacent soundproof panels 1 are in close contact with each other without forming a gap. Can be prevented. Moreover, since the packings 5a and 5b are displaced in the thickness direction between the adjacent soundproof panels 1, an air layer 9 is formed between the packings 5a and 5b. The air is vibrated by the sound propagating through the air layer 9, and the acoustic energy is reduced by friction with the surrounding soundproof panel side surface.

In the soundproof panel 1 having the sound insulation effect as described above, when the both surface plates 2 and 2, the core material 3, and the core frame material 4 that are constituent members are formed of different materials, the natural frequency of each member Therefore, the sound insulation performance can be exhibited in a wide frequency range. It is more preferable that the surface plates 2 and 2 are made of different materials. For example, the sound insulation performance can be improved in a wide sound range by appropriately selecting a combination of wood and plastic, or corrugated cardboard, particle board and plywood among wood.
5 and 6, the sound absorbing material 14 may be disposed below the soundproof panel 1 inside the floor frame 11 as indicated by a chain line. Moreover, a finishing floor material is laid on the upper surface of the soundproof panel 1 as necessary.

FIG. 7 shows a second embodiment of the soundproof panel. This soundproof panel 15 is the same as that of the first embodiment in that it has both surface plates 2, 2, a core material 16, a core frame material 4, and packings 5a, 5b. Is formed. As the core material 16, a so-called paper honeycomb using corrugated cardboard as a plate material 17 is used. The core material 16 is folded during transportation and storage before assembly, and the core frame material 4 is expanded in a honeycomb shape. And is covered with both surface plates 2 and 2.
Also in the soundproof panel 15, the honeycomb-shaped core material 16 can form a large number of small spaces 18 between the both surface plates 2 and 2, and the sound insulation performance can be improved. , 2 along the opposing direction, and has excellent mechanical strength.

  In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention. For example, the soundproof panel of the present invention can be used for walls, doors, ceilings, partitions and the like in addition to the floor.

  DESCRIPTION OF SYMBOLS 1 ... Soundproof panel, 2, 2 ... Surface board, 3 ... Core material, 4 ... Core frame material, 5a, 5b ... Packing, 6 ... Plate material, 7 ... Small space, 8 ... Layered packing, 11 ... Floor frame, 12 ... Frame material, 13 ... vibration-proof rubber, 14 ... sound absorbing material, 15 ... soundproof panel, 16 ... core material, 17 ... plate material, 18 ... small space.

Claims (7)

  Between the pair of mutually parallel surface plates, a core material formed by combining a plurality of plate materials along the facing direction of the surface plates is disposed, and the core material surrounds a space sandwiched between both surface plates by the plate materials. A soundproof panel characterized by being divided into a large number of small spaces.   The soundproof panel according to claim 1, wherein a core frame member that closes between both surface plates is provided on the outer peripheral portion along the outer peripheral direction.   The soundproof panel according to claim 1 or 2, wherein a long packing is provided on an outer surface of the core frame member along an outer peripheral direction.   The said surface board is formed in a rectangular shape, and the said packing is shifted and provided in the thickness direction by two sides arrange | positioned at the corner | angular part which the said surface board opposes, It is provided. Soundproof panel.   The soundproof panel according to any one of claims 1 to 4, wherein a layered packing covering an outer surface of the surface plate is provided on one of the surface plates.   The soundproof panel according to any one of claims 1 to 5, wherein the surface plate and the core material are formed of different materials.   The soundproof panel according to any one of claims 1 to 6, wherein the pair of surface plates are formed of different materials.

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