Coffered ceiling structure for reducing inter-floor noise

Abstract

The present invention relates to a recessed ceiling structure for reducing inter-floor noise by preventing the amplification of inter-floor noise caused by the ceiling structure using a recessed ceiling formed in the living room ceiling of a multi-unit dwelling. Specifically, the invention relates to a recessed ceiling structure for reducing inter-floor noise in which a perimeter board is installed vertically between a recessed ceiling board provided on the lower side of an upper slab and a ceiling board, and a damping board is provided on the front surface of the perimeter board, spaced apart from the perimeter board and parallel to the perimeter board. The inter-floor noise reduction recessed ceiling structure of the present invention is characterized by being composed of: a recessed ceiling board provided on the lower side of an upper slab, spaced apart from the upper slab and parallel to the upper slab; a perimeter board provided on the side end of the recessed ceiling board in a downward vertical direction; a ceiling board provided on the lower side of the perimeter board to the outside; and a damping board provided on the upper side of the ceiling board, spaced apart from the perimeter board and parallel to the perimeter board.

Description

Technology Field

[0001] The present invention relates to a recessed ceiling structure for reducing inter-floor noise by preventing the amplification of inter-floor noise caused by the ceiling structure using a recessed ceiling formed in the living room ceiling of a multi-unit dwelling. A perimeter board is installed vertically between a recessed ceiling board and a ceiling board provided on the lower side of an upper slab, and a damping board is provided on the front of the perimeter board, spaced apart from the perimeter board and parallel to the perimeter board. Background Technology

[0003] Recently, the use of multi-unit dwellings as residential buildings has become increasingly common. Due to their structure, inter-floor noise is inevitable in multi-unit dwellings; as disputes between neighbors arise from this, inter-floor noise is emerging as a serious social issue.

[0004] Accordingly, institutional regulations to reduce inter-floor noise are being strengthened, such as limiting floor thickness to 210 mm or more for wall-type or flat-slab structures and 150 mm or more for frame structures to block floor impact noise in multi-unit housing, and regulating the performance of cushioning materials installed on floor structures to absorb impact noise.

[0005] Noise generated in multi-unit dwellings can be broadly divided into light impact sound, which is caused by the impact of relatively light and hard objects such as falling objects or dragging furniture, and heavy impact sound, which is caused by the impact of heavy and soft objects on the floor, such as when a child runs.

[0006] Among these, lightweight impact sound is characterized by a high frequency range, weak impact force, and short duration, whereas heavyweight impact sound is relatively low-frequency, has a high impact force, and a long acoustic duration. Furthermore, the magnitude of lightweight impact sound is significantly influenced by the flexibility of surface finishing materials, whereas the magnitude of heavyweight impact sound is heavily affected by the stiffness, density, surface area, and fixing conditions of the transmission medium, namely the floor or walls.

[0007] In existing multi-unit housing, ceiling panels are installed spaced apart from the lower part of the slab, and the upper part of the framed walls or dry walls within the unit is extended to the underside of the upper slab.

[0008] However, impact sound transmitted from concrete slabs is carried by the air acting as the medium; since such ceiling structures are closed structures that prevent air pressure from escaping, there is a problem in that the weak ceiling panels vibrate when impact sound occurs, thereby amplifying inter-floor noise. Prior art literature

[0010] (Patent Document 0001) KR 10-1244461 B1(Patent Document 0002) KR 10-2299256 B1 The problem to be solved

[0011] In order to solve the above-mentioned problems, the present invention aims to provide a recessed ceiling structure for reducing inter-floor noise that can reduce inter-floor noise by preventing the amplification of inter-floor noise caused by the ceiling structure through the use of a recessed ceiling formed in the living room ceiling of a multi-unit dwelling. means of solving the problem

[0013] The present invention, according to a preferred embodiment, provides a recessed ceiling structure for reducing inter-floor noise, characterized by comprising: a recessed ceiling board provided parallel to the upper slab and spaced apart from the upper slab on the lower side of the upper slab; a perimeter board provided in a downward vertical direction on the side end of the recessed ceiling board; a ceiling board provided outwardly from the bottom of the perimeter board; and a damping board provided parallel to the perimeter board and spaced apart from the perimeter board on the upper side of the ceiling board.

[0014] According to another preferred embodiment, the present invention provides a floor noise reduction well ceiling structure characterized in that the damping board is a perforated board having a plurality of holes formed therein.

[0015] According to another preferred embodiment, the present invention provides a recessed ceiling structure for reducing inter-floor noise, characterized in that the end of the ceiling board is spaced apart from the bottom of the perimeter board, and an air vent is formed between them.

[0016] According to another preferred embodiment, the present invention provides a recessed ceiling structure for reducing inter-floor noise, characterized in that a sound-absorbing material is provided on the front surface of the damping board, and an air exhaust passage communicating with the air exhaust port is formed between the sound-absorbing material and the edge board.

[0017] According to another preferred embodiment, the present invention provides a recessed ceiling structure for reducing inter-floor noise, characterized in that support bars are respectively provided on the upper and lower front sides of the damping board in the longitudinal direction of the damping board and fixedly coupled to the damping board, and the sound-absorbing material is provided between the upper and lower support bars.

[0018] According to another preferred embodiment, the present invention provides a recessed ceiling structure for reducing inter-floor noise, characterized in that a spacer is provided on the front of the upper support bar to separate the edge board from the sound-absorbing material.

[0019] According to another preferred embodiment, the present invention provides a recessed ceiling structure for reducing inter-floor noise, characterized in that a finishing board is provided on the front surface of the perimeter board, and a cover portion that conceals the air outlet is formed protruding toward the ceiling board at the bottom of the finishing board. Effects of the invention

[0021] According to the present invention, a recessed ceiling structure for reducing inter-floor noise can be provided, wherein a perimeter board is installed vertically between a recessed ceiling board and a ceiling board provided on the lower side of an upper slab, and a damping board is provided on the front of the perimeter board, spaced apart from the perimeter board and parallel to the perimeter board.

[0022] Accordingly, since the sound energy of the air within the ceiling space is reduced as it passes through the damping board rather than being reflected, it is possible to reduce inter-floor noise by preventing the amplification of inter-floor noise caused by the ceiling structure using a recessed ceiling formed in the living room ceiling of an apartment building.

[0023] In addition, sound absorption effects can be achieved by utilizing the air layer space on the back of the damping board. Brief explanation of the drawing

[0025] FIG. 1 is a cross-sectional view illustrating the inter-floor noise reduction coffered ceiling structure of the present invention. FIG. 2 is an enlarged cross-sectional view illustrating the coffered ceiling structure of FIG. 1. FIG. 3 is a perspective view illustrating an embodiment of the well ceiling structure shown in FIG. 2. FIG. 4 is a perspective view illustrating an embodiment of a damping board. FIG. 5 is a perspective view illustrating another embodiment of a damping board. FIG. 6 is a cross-sectional view illustrating a coffered ceiling structure equipped with sound-absorbing material. FIG. 7 is a perspective view illustrating an embodiment of the well ceiling structure shown in FIG. 6. FIG. 8 is a perspective view illustrating a damping bar. Specific details for implementing the invention

[0026] The present invention will be described in detail below according to the attached drawings and preferred embodiments.

[0028] FIG. 1 is a cross-sectional view illustrating the inter-floor noise reduction coffered ceiling structure of the present invention, FIG. 2 is an enlarged cross-sectional view illustrating the coffered ceiling structure of FIG. 1, and FIG. 3 is a perspective view illustrating an embodiment of the coffered ceiling structure illustrated in FIG. 2.

[0029] As illustrated in FIGS. 1 to 3, the inter-floor noise reduction coffered ceiling structure of the present invention is characterized by being composed of: a coffered ceiling board (21) provided parallel to the upper slab (1) and spaced apart from the upper slab (1) on the lower side of the upper slab (1); a perimeter board (22) provided in a downward vertical direction on the side end of the coffered ceiling board (21); a ceiling board (23) provided outwardly from the bottom of the perimeter board (22); and a damping board (24) provided parallel to the perimeter board (22) and spaced apart from the perimeter board (22) on the upper side of the ceiling board (23).

[0030] The present invention aims to provide a recessed ceiling structure for reducing inter-floor noise that can reduce inter-floor noise by preventing the amplification of inter-floor noise caused by the ceiling structure using a recessed ceiling formed in the living room ceiling of a multi-unit dwelling.

[0031] The inter-floor noise reduction coffered ceiling structure of the present invention is applied to a ceiling structure (2) comprising a coffered ceiling board (21), a border board (22), and a ceiling board (23).

[0032] The above-mentioned well ceiling board (21), border board (22) and ceiling board (23) may be composed of gypsum board, etc.

[0033] The above-mentioned well ceiling board (21) is provided parallel to and spaced apart from the upper slab (1) on the lower side of the upper slab (1).

[0034] The above-mentioned well ceiling board (21) is installed at a higher height than the surrounding ceiling board (23) so that the well ceiling board (21) is formed to be concave upward.

[0035] Although not shown in the drawing, the above-mentioned well ceiling board (21) and ceiling board (23) can be fixedly installed on the lower part of the upper slab (1) by means of a hanger and an embar, etc.

[0036] A vertical edge board (22) is provided at the boundary between the above-mentioned well ceiling board (21) and the ceiling board (23).

[0037] The upper edge of the above-mentioned border board (22) can be joined to the side edge of the well ceiling board (21) by means of fastening members such as screws.

[0038] A ceiling board (23) is provided on the outer side of the bottom of the above-mentioned border board (22).

[0039] At this time, since the height of the ceiling space (10b) above the ceiling board (23) is higher than the ceiling space (10a) above the well ceiling board (21), the airflow within the ceiling space moves from the upper part of the well ceiling board (21) to the upper space of the ceiling board (23).

[0040] Accordingly, a damping board (24) is installed on the upper part of the ceiling board (23).

[0041] The above damping board (24) is provided with a long length parallel to the rim board (22) and is spaced apart from the rim board (22) at a certain distance.

[0042] That is, the damping board (24) is provided vertically on the upper part of the ceiling board (23).

[0043] The above damping board (24) does not completely block air transfer between compartments separated by the damping board (24), but rather allows air movement so that sound energy within the ceiling space is transmitted and lost without being reflected.

[0044] That is, sound energy (noise) transmitted through the air medium is converted into thermal energy and kinetic energy as it passes through the damping board (24) and partially absorbed, thereby reducing the sound energy overall. Accordingly, the transmission of inter-floor noise within the ceiling space can be reduced or blocked.

[0045] In the case where a curtain box (3) is installed on the upper outer side of the living room, a damping board (24) may also be provided on the side of the curtain box (3).

[0046] In this case, the curtain box (3) is composed of an upper board (31) and a side board (32), and the damping board (24) may be provided parallel to the side board (32) on the upper part of the ceiling board (23) at a position spaced apart from the side board (32).

[0048] FIG. 4 is a perspective view illustrating an embodiment of a damping board, and FIG. 5 is a perspective view illustrating another embodiment of a damping board.

[0049] As shown in FIGS. 4 and 5, the damping board (24) may be composed of a perforated board having a plurality of holes (240) formed therein.

[0050] In order to reduce sound energy passing through the damping board (24) while preventing the ceiling space from being closed on the left and right sides of the damping board (24), the damping board (24) may be composed of a perforated board having a plurality of perforations (240) formed therein.

[0051] The above hole (240) can be formed by penetrating the plate-shaped damping board (24).

[0052] The above-mentioned holes (240) can be formed in various shapes such as circular, square, rhombus, slit, etc.

[0053] The damping board (24) can be formed by perforating a gypsum board or an MDF board (Fig. 4). Alternatively, the damping board (24) can be formed by assembling a mesh net (242) or a non-woven fabric, etc., onto a board body (241) having an opening (Fig. 5).

[0054] In order to fully achieve sound energy reduction efficiency by the damping board (24), it is preferable that the perforations (240) be configured with a diameter of 1 to 120 mm and a perforation rate (opening rate) of 8 to 25%.

[0056] As illustrated in FIG. 2, the end of the ceiling board (23) may be spaced apart from the bottom of the perimeter board (22) so that an air outlet (201) can be formed between them.

[0057] The present invention aims to attenuate sound energy in the damping board (24) while guiding the air inside the ceiling space to the outside of the well ceiling.

[0058] However, if the ceiling space is closed, it is difficult for air to move smoothly.

[0059] Therefore, the side edge of the ceiling board (23) and the bottom edge of the border board (22) can be spaced apart from each other to form an air outlet (201).

[0060] Accordingly, the air inside the ceiling space (10a) on the side of the recessed ceiling board (21) moves to the ceiling space (10b) on the side of the ceiling board (23) on the outer side of the recessed ceiling, passes through the damping board (24), and is discharged into the lower space of the ceiling structure through the air outlet (201). At this time, sound energy in the air is reduced as it passes through the damping board (24).

[0062] FIG. 6 is a cross-sectional view illustrating a coffered ceiling structure equipped with sound-absorbing material, and FIG. 7 is a perspective view illustrating an embodiment of the coffered ceiling structure illustrated in FIG. 6.

[0063] As shown in FIGS. 6 and 7, a sound-absorbing material (25) is provided on the front surface of the damping board (24), and an air exhaust passage (202) communicating with the air exhaust port (201) may be formed between the sound-absorbing material (25) and the edge board (22).

[0064] In order to effectively reduce sound energy passing through the damping board (24), a sound-absorbing material (25) may be provided on the front surface of the damping board (24).

[0065] Sound energy passing through the damping board (24) is absorbed and scattered by the sound-absorbing material (25) and is not reflected back into the ceiling space.

[0066] The sound-absorbing material (25) may be polyester, glass wool, etc.

[0067] The sound-absorbing material (25) can be provided in a long length so as to be continuous in the longitudinal direction of the damping board (24).

[0068] In order for the air passing through the damping board (24) to be smoothly discharged through the sound-absorbing material (25) to the lower air outlet (201), an air discharge path (202) may be formed on the front of the sound-absorbing material (25) at a certain width apart from the border board (22).

[0070] FIG. 8 is a perspective view illustrating a damping bar.

[0071] As shown in FIGS. 2 and 6, support bars (26) are respectively provided on the upper and lower front sides of the damping board (24) in the longitudinal direction of the damping board (24) and fixedly connected to the damping board (24), and the sound-absorbing material (25) may be provided between the upper and lower support bars (26).

[0072] A support bar (26) may be provided to facilitate connection with the ceiling board (23), etc. while simultaneously installing the damping board (24) and the sound-absorbing material (25).

[0073] The above support bar (26) is provided as a pair on the upper and lower front of the damping board (24), so that the upper support bar (26) and the lower support bar (26) are spaced apart from each other vertically.

[0074] The above support bar (26) may be a wooden beam, etc.

[0075] The above support bar (26) may be provided in multiple numbers so as to be adjacent in the horizontal direction according to the width of the sound-absorbing material (25).

[0076] The above damping board (24) can be fixed to the rear of the support bar (26) by a fastening member.

[0077] Sound-absorbing material (25) is filled into the space between the upper support bar (26) and the lower support bar (26).

[0078] Accordingly, the damping board (24), support bar (26), and sound-absorbing material (25) are assembled in advance to form the damping bar (20) (Fig. 8), and then the damping bar (20) is installed all at once, making construction easier and reducing construction time. As shown in Fig. 2, the damping bar (20) may be composed only of the damping board (24) and the upper and lower support bars (26).

[0079] The above ceiling board (23) can be fixed by being in close contact with the lower surface of the lower support bar (26) and secured by a fastening member.

[0081] As shown in FIGS. 2 and 6, a spacer (27) that separates the edge board (22) from the sound-absorbing material (25) may be provided on the front of the upper support bar (26).

[0082] A spacer (27) may be provided on the front of the upper support bar (26) to separate the pre-assembled damping bar (20) and the rim board (22) to secure an air exhaust passage (202).

[0083] The above spacer (27) can be formed in the shape of a long strip plate along the length of the support bar (26).

[0084] The above spacer (27) can be fixedly installed on the front of the upper support bar (26) by means of a fastening member. And the above edge board (22) can be installed in close contact with the front of the spacer (27) by means of a fastening member.

[0086] As illustrated in FIGS. 2 and 6, a finishing board (28) is provided on the front of the edge board (22), and a cover portion (281) that conceals the air outlet (201) may be formed protruding toward the ceiling board (23) at the bottom of the finishing board (28).

[0087] When an air outlet (201) is provided by forming a gap between the ceiling board (23) and the border board (22), the gap may be exposed to the lower part of the ceiling structure (2), which may impair the aesthetics.

[0088] Therefore, to visually shield the air outlet (201) when viewed from inside, a finishing board (28) is installed on the front of the border board (22), and a cover portion (281) can be formed on the bottom of the finishing board (28).

[0089] The above cover portion (281) is formed to protrude from the bottom of the finishing board (28) toward the ceiling board (23).

[0090] At this time, so that the air outlet (201) is not closed by the cover portion (281), the bottom of the finishing board (28) can be formed to extend a certain length downward from the bottom surface of the ceiling board (23). Accordingly, the cover portion (281) and the bottom surface of the ceiling board (23) are spaced apart from each other.

[0091] That is, the above cover portion (281) only needs to visually conceal the air outlet (201) and does not close the air outlet (201) itself.

[0092] When a damping bar (20) is provided on the side of the curtain box (3), a cover molding (33) is installed on the lower surface of the ceiling board (23), and the lower end of the side board (32) is formed short so that it is spaced apart from the upper surface of the cover molding (33) at a certain distance, thereby securing an air outlet (201). Explanation of the symbols

[0094] 1: Upper slab 10a, 10b: Ceiling space 2: Ceiling Structure 20: Damping bar 201: Air outlet 202: Air exhaust passage 21: Coffered ceiling board 22: Border board 23: Ceiling board 24: Damping board 240: Meritorious Service 241: Board body 242: Mesh net 25: Sound-absorbing material 26: Jijiba 27: Spacer 28: Finishing board 281: Cover section 3: Curtain Box 31: Top board 32: Side board 33: Cover molding

Claims

Claim 1 A floor noise reduction coffered ceiling structure characterized by comprising: a coffered ceiling board (21) provided parallel to the upper slab (1) and spaced apart from the upper slab (1) on the lower side of the upper slab (1); a perimeter board (22) provided in a downward vertical direction on the side end of the coffered ceiling board (21); a ceiling board (23) provided outwardly from the bottom of the perimeter board (22); and a damping board (24) provided parallel to the perimeter board (22) and spaced apart from the perimeter board (22) on the upper side of the ceiling board (23). Claim 2 A floor noise reduction well ceiling structure according to claim 1, characterized in that the damping board (24) is a perforated board having a plurality of perforations (240) formed therein. Claim 3 A floor noise reduction well ceiling structure according to claim 1, characterized in that the end of the ceiling board (23) is spaced apart from the bottom of the rim board (22) and an air outlet (201) is formed between them. Claim 4 In paragraph 3, the inter-floor noise reduction well ceiling structure is characterized in that a sound-absorbing material (25) is provided on the front surface of the damping board (24), and an air exhaust passage (202) communicating with the air exhaust port (201) is formed between the sound-absorbing material (25) and the edge board (22). Claim 5 In claim 4, the inter-floor noise reduction well ceiling structure is characterized in that a support bar (26) is provided at the front upper and lower portions of the damping board (24) in the longitudinal direction of the damping board (24) and is fixedly coupled to the damping board (24), and the sound-absorbing material (25) is provided between the upper and lower support bars (26). Claim 6 In claim 5, the inter-floor noise reduction well ceiling structure is characterized by having a spacer (27) on the front of the upper support bar (26) that separates the edge board (22) from the sound-absorbing material (25). Claim 7 In paragraph 3, the inter-floor noise reduction well ceiling structure is characterized in that a finishing board (28) is provided on the front of the rim board (22), and a cover part (281) that conceals the air outlet (201) is formed protruding toward the ceiling board (23) at the bottom of the finishing board (28).

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