Trap for reducing inter-floor noise

Abstract

The present invention relates to a noise reduction trap that can prevent inter-floor noise amplification by preventing the concentration of impact sound within the ceiling space and inducing the redistribution of sound energy within the ceiling space by installing the noise reduction trap, which is formed by mounting a sound-absorbing block on the upper part of a lower plate, in a corner part inside the ceiling space. The noise reduction trap of the present invention relates to a noise reduction trap installed in a corner part of a ceiling space formed between a slab and a ceiling panel installed spaced apart from the lower part of the slab, and is characterized by comprising: a lower plate provided on the upper part of the ceiling panel so as to be spaced apart from the lower part of the slab; and a sound-absorbing block mounted on the upper part of the lower plate so as to face the central part of the ceiling space.

Description

Technology Field

[0001] The present invention relates to a noise reduction trap capable of preventing inter-floor noise amplification by preventing the concentration of impact sound within the ceiling space and inducing the redistribution of sound energy within the ceiling space, by installing a noise reduction trap, formed by mounting a sound-absorbing block on the upper part of a lower plate, in a corner portion within the ceiling space. Background Technology

[0003] As multi-unit dwellings such as apartments and officetels have recently become the standard form of housing, disputes over inter-floor noise between households are emerging as a serious social problem.

[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] Sound has different properties in the low-frequency and high-frequency bands. However, in the case of inter-floor noise, the influence of the low-frequency band within floor impact sound is more significant, and it is more difficult to reduce the low-frequency band than the high-frequency band.

[0008] In particular, low-frequency bands have long wavelengths, so they spread easily in wall corners, door gaps, and room corners, and are difficult to attenuate.

[0009] In recent multi-unit housing, ceiling panels are installed spaced apart from the slab to shorten the structural construction period and prevent various plumbing pipes from being exposed, and plumbing pipes are installed within the ceiling space between the slab and the ceiling panels.

[0010] Impact sound transmitted from concrete slabs is carried by the air acting as the medium. However, conventional ceiling structures are closed, preventing air pressure from escaping the ceiling space. Consequently, when impact sound occurs, the low-rigidity ceiling panels vibrate, amplifying inter-floor noise. Furthermore, within the ceiling space, low-frequency sounds are less easily reflected and undergo greater diffraction than high-frequency sounds, often resulting in concentrated sound energy. This leads to increased amplification of inter-floor noise caused by the vibration of the ceiling panels.

[0011] Accordingly, in Registered Patent No. 10-2788460, a metallic sound transmission member, a noise reduction panel, and a sound-absorbing material are installed on the underside of the upper slab to block the transmission of noise through the interior space of the ceiling.

[0012] However, the aforementioned registered patent involves a cumbersome process for attaching sound transmission members, noise reduction panels, and sound-absorbing materials to the underside of the upper slab, and workability is significantly reduced, particularly because the noise reduction panels must be fixed to the slab with anchor bolts. Furthermore, since various materials are installed across the entire underside of the slab, it is difficult to secure sufficient ceiling height for the installation of various pipes.

[0013] In addition, Registered Patent No. 10-1244461 installs a resonator inside the ceiling space to provide sound insulation and sound absorption performance.

[0014] In this case, the resonator is installed by attaching it to the wall or mounting it on the upper surface of the ceiling panel. However, if the resonator is attached to the entire wall surface in the above technology, it is difficult to reduce sound energy in the low-frequency band because it is impossible to prevent sound energy from accumulating in the corners and amplifying inter-floor noise. The problem to be solved

[0016] To solve the above-mentioned problems, the present invention aims to provide a noise reduction trap capable of preventing inter-floor noise amplification by preventing the concentration of impact sound within the ceiling space and inducing the redistribution of sound energy within the ceiling space. means of solving the problem

[0018] The present invention, according to a preferred embodiment, relates to a noise reduction trap installed in a corner of a ceiling space formed between a slab and a ceiling panel spaced apart from the lower part of the slab, and provides a noise reduction trap characterized by comprising: a lower plate provided on the upper part of the ceiling panel spaced apart from the lower part of the slab; and a sound-absorbing block mounted on the upper part of the lower plate so as to face the central part of the ceiling space.

[0019] According to another preferred embodiment, the present invention provides a noise reduction trap characterized in that the sound-absorbing block is in close contact with the lower surface of the slab.

[0020] According to another preferred embodiment, the present invention provides a noise reduction trap characterized by having a diffusion plate provided on the front surface of the sound-absorbing block.

[0021] According to another preferred embodiment, the present invention provides a noise reduction trap characterized in that the diffusion plate comprises a substrate provided on the front surface of a sound-absorbing block and a plurality of diffusion protrusions formed protruding from the front surface of the substrate.

[0022] According to another preferred embodiment, the present invention provides a noise reduction trap characterized by a plurality of rows of slits being formed through the diffusion plate. Effects of the invention

[0024] According to the present invention, by installing a noise reduction trap formed by mounting a sound-absorbing block on the upper part of a lower plate in a corner portion inside a ceiling space, a noise reduction trap can be provided that prevents the concentration of impact sound inside the ceiling space and induces the redistribution of sound energy within the ceiling space, thereby preventing the amplification of inter-floor noise.

[0025] In particular, sound-absorbing blocks can prevent the amplification of impact sound caused by the reflection and diffraction of sound energy by absorbing sound energy concentrated at the corners using air as a medium within the ceiling space.

[0026] In addition, when the upper surface of the sound-absorbing block is in close contact with the lower surface of the upper slab, it can directly absorb vibration energy transmitted from the frame itself and radiated sound energy generated by vibration.

[0027] In addition, if a diffusion plate is provided on the front of the sound-absorbing block, it is possible to prevent strong concentration of impact sound at the corners and reduce inter-floor noise by inducing the redistribution of sound energy. Brief explanation of the drawing

[0029] FIG. 1 is a bottom perspective view illustrating the state in which the noise reduction trap of the present invention is installed in a ceiling structure. FIG. 2 is a perspective view illustrating the state in which a lower plate is installed. FIG. 3 is a perspective view illustrating the state in which sound-absorbing blocks are installed. FIG. 4 is a perspective view illustrating the state in which the upper plate is installed. Figure 5 is a diagram showing the waveform pattern of slab vibration. FIG. 6 is a perspective view illustrating the state in which a slab-attached sound-absorbing block is installed. FIG. 7 is an exploded perspective view illustrating the coupling relationship of the diffusion plate. FIG. 8 is a perspective view illustrating the combined state of the diffusion plate. FIG. 9 is a side view illustrating the diffusion plate of FIG. 8. FIG. 10 is a perspective view illustrating an embodiment equipped with a horizontal slit. FIG. 11 is a perspective view illustrating an embodiment equipped with a separable diffusion plate. Specific details for implementing the invention

[0030] The present invention will be described in detail below according to the attached drawings and preferred embodiments.

[0032] FIG. 1 is a bottom perspective view showing the noise reduction trap of the present invention installed in a ceiling structure. FIG. 2 is a perspective view showing the state in which a lower plate is installed, FIG. 3 is a perspective view showing the state in which a sound-absorbing block is installed, and FIG. 4 is a perspective view showing the state in which an upper plate is installed.

[0033] As illustrated in FIGS. 1 to 4, the noise reduction trap of the present invention relates to a noise reduction trap (4) installed in a corner of a ceiling space formed between a slab (1) and a ceiling panel (3) spaced apart from the lower part of the slab (1), and is characterized by comprising: a lower plate (41) provided on the upper part of the ceiling panel (3) so as to be spaced apart from the lower part of the slab (1); and a sound-absorbing block (42) mounted on the upper part of the lower plate (41) so as to face the central part of the ceiling space.

[0034] The present invention is intended to provide a noise reduction trap capable of preventing inter-floor noise amplification by preventing the concentration of impact sound within the ceiling space and inducing the redistribution of sound energy within the ceiling space.

[0035] The above noise reduction trap (4) is configured to include a lower plate (41) and a sound-absorbing block (42) and is installed in the corner of the ceiling space.

[0036] The above ceiling space is formed between the slab (1) and the ceiling panel (3) installed spaced apart from the lower part of the slab (1).

[0037] The above noise reduction trap (4) may be provided at all four corners of the ceiling space depending on the planar arrangement, or may be provided at only some of the four corners.

[0038] The lower plate (41) is provided on the upper part of the ceiling panel (3) so as to be spaced apart from the lower part of the slab (1). That is, the lower plate (41) is provided so as to be spaced apart from the lower surface of the upper slab (1) at a certain distance.

[0039] The lower plate (41) is formed in the shape of a right triangle, with the opposite side fixedly installed on a ceiling frame member (5) or curtain box (6) installed on the front of the wall (2), and the hypotenuse may be provided to face the center of the ceiling space.

[0040] A sound-absorbing block (42) is provided on the upper part of the lower plate (41).

[0041] The above sound-absorbing block (42) may be EPS, polyester, glass wool, etc.

[0042] The above sound-absorbing block (42) is provided so that its front face is towards the center of the ceiling space.

[0043] Accordingly, the sound-absorbing block (42) absorbs sound energy transmitted through air as a medium within the ceiling space and concentrated in the corner section, thereby preventing impact sound from being amplified by reflection and diffraction of sound energy.

[0044] As shown in FIG. 3, the sound-absorbing block (42) can be configured in a bar shape.

[0045] The above noise reduction trap (4) may be configured by installing an upper plate (43) spaced apart from the lower plate (41) and filling a sound-absorbing material between the lower plate (41) and the upper plate (43) to form a sound-absorbing block (42).

[0047] FIG. 5 is a drawing showing the waveform pattern of slab vibration, and FIG. 6 is a perspective view showing the state in which a slab-attached sound-absorbing block is installed.

[0048] As shown in FIG. 6, the sound-absorbing block (42) can be configured to be in close contact with the lower surface of the slab (1).

[0049] The impact applied to the upper concrete slab (1) proceeds as a circular waveform in the low frequency band.

[0050] In this case, the vibration of the slab (1) is reinforced and amplified by interference and resonance at the corner where the three faces of the slab (1) and the two orthogonal walls (2) meet, causing the waveform pattern to be distorted (Fig. 5).

[0051] Therefore, the upper surface of the sound-absorbing block (42) can be attached to the lower surface of the upper slab (1) so as to directly absorb not only sound energy transmitted through the air medium within the ceiling space, but also vibration energy transmitted from the frame itself and radiated sound energy generated by vibration.

[0052] In this case, the upper plate (43) is not installed on the upper part of the sound-absorbing block (42), and the upper surface of the sound-absorbing block (42) can be configured to come into direct contact with the lower surface of the slab (1).

[0053] It is preferable that the sound-absorbing block (42) be configured in the shape of a right triangle so that it extends to the boundary of the slab (1).

[0054] Accordingly, the overall level of inter-floor noise can be lowered by fundamentally reducing sound energy that is partially amplified and reinforced within the living room.

[0056] FIG. 7 is an exploded perspective view illustrating the coupling relationship of the diffusion plate, FIG. 8 is a perspective view illustrating the coupled state of the diffusion plate, and FIG. 9 is a side view illustrating the diffusion plate of FIG. 8.

[0057] As shown in FIGS. 7 to 9, a diffusion plate (44) may be provided on the front surface of the sound-absorbing block (42).

[0058] A diffusion plate (44) may be provided on the front of the sound-absorbing block (42) so that impact sound concentrated in the corner of the ceiling space can be dissipated without being amplified.

[0059] The above diffusion plate (44) can be treated with a rough surface to diffusely reflect the transmitted impact sound.

[0060] The above diffusion plate (44) prevents strong concentration of impact sound and induces redistribution of sound energy within the living room, thereby reducing inter-floor noise.

[0061] A portion of the sound energy transmitted to the above diffusion plate (44) is diffusely reflected and diffused, and the remaining portion is transmitted to and absorbed by the sound-absorbing block (42) by the diffusion plate (44).

[0063] As illustrated in FIGS. 7 to 9, the diffusion plate (44) may be composed of a substrate (441) provided on the front surface of the sound-absorbing block (42) and a plurality of diffusion protrusions (442) formed protruding from the front surface of the substrate (441).

[0064] The above diffusion plate (44) may be composed of a substrate (441) and a diffusion protrusion (442).

[0065] The above substrate (441) is provided in close contact with the front surface of the sound-absorbing block (42).

[0066] The lower part of the above substrate (441) can be fixedly connected to the front end of the lower plate (41) by a fastening member such as a piece.

[0067] The above-mentioned diffusion protrusions (442) may be formed in multiple numbers protruding from the front surface of the substrate (441).

[0068] Since the above-mentioned diffusion protrusion (442) diffuses sound energy transmitted in a horizontal direction within the ceiling space back into a horizontal direction, it can be formed such that its outer surface becomes a vertical surface. At this time, it is preferable to form the above-mentioned diffusion protrusion (442) in the shape of a triangle with a pointed front on a plane so that the direction of incidence and the direction of reflection of sound energy do not coincide with each other.

[0069] The above-mentioned diffusion protrusions (442) may be provided in multiple rows in the vertical direction.

[0070] At this time, for efficient diffusion of negative energy, it is desirable to arrange the upper and lower heat diffusion protrusions (442) in an alternating manner.

[0072] FIG. 10 is a perspective view illustrating an embodiment equipped with a horizontal slit, and FIG. 11 is a perspective view illustrating an embodiment equipped with a separable diffusion plate.

[0073] As shown in FIGS. 8, 10 and 11, a plurality of rows of slits (443) may be formed through the diffusion plate (44).

[0074] If the above diffusion plate (44) is fixedly installed at the front end of the lower plate (41) or if the thickness of the diffusion plate (44) is thick, the sound energy transmitted to the diffusion plate (44) may not be transmitted to the sound-absorbing block (42) on the back side.

[0075] Therefore, a slit (443) is formed in the above-mentioned diffusion plate (44) so ​​that sound energy can be transmitted to and absorbed by the sound-absorbing block (42) on the back side.

[0076] The above slit (443) can be formed vertically as in FIG. 8 or formed horizontally as in FIG. 10 and penetrate the substrate (441) of the diffusion plate (44).

[0077] Alternatively, as shown in FIG. 11, the diffusion plate (44) may be divided in a horizontal direction, and adjacent diffusion plates (44) may be spaced apart at a certain distance to form a slit (443) between them. Explanation of the symbols

[0079] 1: Slab 2: Wall 3: Ceiling panels 4: Noise Reduction Trap 41: Bottom plate 42: Sound-absorbing block 43: Upper plate 44: Diffusion Plate 441: Board 442: Diffusion Stone 443: Slit 5: Ceiling frame member 6: Curtain box

Claims

Claim 1 The noise reduction trap (4) is installed in the corner of a ceiling space formed between a slab (1) and a ceiling panel (3) spaced apart from the lower part of the slab (1), and is characterized by comprising: a lower plate (41) provided on the upper part of the ceiling panel (3) spaced apart from the lower part of the slab (1); and a sound-absorbing block (42) mounted on the upper part of the lower plate (41) so that its front face faces the central part of the ceiling space. Claim 2 A noise reduction trap according to claim 1, characterized in that the sound-absorbing block (42) is in close contact with the lower surface of the slab (1). Claim 3 A noise reduction trap according to claim 1 or 2, characterized in that a diffusion plate (44) is provided on the front surface of the sound-absorbing block (42). Claim 4 In paragraph 3, the noise reduction trap is characterized in that the diffusion plate (44) is composed of a substrate (441) provided on the front surface of the sound-absorbing block (42) and a plurality of diffusion protrusions (442) formed protruding from the front surface of the substrate (441). Claim 5 A noise reduction trap according to paragraph 3, characterized in that a plurality of rows of slits (443) are formed through the diffusion plate (44).

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