KR102061573B1 - sound absorption panel for building - Google Patents

Abstract

The present invention relates to an interlayer sound absorbing device of a building, and more particularly, to an interlayer sound absorbing device of a building that absorbs the noise between floors generated in an apartment.
In the sound absorbing device of the building of the present invention, by installing a weight member having an upper and a lower part supported by an elastic unit on the floor of the building, the vibration transmitted to the lower floor of the building due to the noise generated in the upper floor is transferred to the weight member and absorbed to the lower floor. The transmitted vibrations can be attenuated or interrupted.
In addition, the lower spring is provided with a larger number than the number of the upper spring or the elastic modulus of the lower spring is formed higher than the elastic modulus of the upper spring can increase the damping efficiency of the vibration.
In addition, by providing a sound absorbing member in the lower portion of the lower spring can increase the damping efficiency of the vibration.

Description

Sound absorption panel for building

The present invention relates to an interlayer sound absorbing device of a building, and more particularly, to an interlayer sound absorbing device of a building that absorbs the noise generated between apartments.

In recent years, noise pollution in apartments, villas, townhouses and multi-family houses has been a major factor in determining the residential environment. Among them, floor impact sound directly affects the residents' discomfort. It is recognized as one of the factors.

The general structure of the multi-family house floor is finished with a cement mortar by installing lightweight foamed concrete for insulation performance on the upper surface of the concrete slab, and then installing heating piping on the upper surface of the lightweight foamed concrete that has been poured. The apartment house to which the floor structure is applied has a problem in that the floor shock sound is transmitted to the lower generation as it is through the floor slab and the wall.

Korean Patent Publication No. 10-1488443 discloses a vibration reducer for floor noise reduction and a floor structure using the same, and Korean Patent Publication No. 10-0852791 discloses a floor shock reduction panel and a floor structure using the same. .

These prior arts have a problem that the lower part of the weight and mass is not connected to the bottom portion, so that the vibration of the weight and the mass is inefficiently attenuated.

Republic of Korea Patent Publication No. 10-1488443: Vibration reducer for reducing the noise between floors and floor structure using the same. Republic of Korea Patent Publication No. 10-0852791: Floor impact sound reduction panel and floor structure using the same.

The problem to be solved by the present invention is to provide an inter-floor sound absorbing device of the building to attenuate the vibration transmitted to the lower floor of the building due to the floor noise generated in the apartment house using an object having a predetermined mass supported by the elastic body There is.

In order to achieve the above object, an interlayer sound absorbing device of a building of the present invention includes: a housing having a sound absorbing space formed therein; and a weight member disposed inside the housing; and the weight member spaced apart from an inner surface of the housing. An elastic unit that elastically supports the housing and attenuates vibration of the weight member when vibration is transmitted to the sound absorbing space, wherein the elastic unit connects an upper portion of the weight member to an inner ceiling of the housing. A plurality of upper springs, and a plurality of lower springs connecting the lower portion of the weight member and the inner bottom of the housing.

The housing is formed of a metal material at the top.

The elastic modulus of the lower spring is formed higher than the elastic modulus of the upper spring.

The lower spring is provided in more than the number of the upper spring.

The interior of the housing has a first coupling means for coupling the inner ceiling of the housing and the upper spring, and a second coupling means for coupling the inner bottom of the housing and the lower spring, the weight member has the upper spring and the lower And a third coupling means to which the spring is coupled.

The first coupling means is a fixed frame formed in the form of a square frame fixed to the ceiling inside the housing, a plurality of auxiliary frames are coupled to both ends on the inner surface of the fixed frame and spaced apart from each other, in the auxiliary frame It has a plurality of hooks that protrude to be coupled to the top of the upper spring.

The first and second coupling means protrude from the housing to the sound absorbing space is formed with a plurality of insertion protrusions for inserting the upper portion of the upper spring and the lower portion of the lower spring.

The second coupling means has a friction layer formed on the upper and lower portions of the weight member and the lower portion of the upper spring and the upper portion of the lower spring are in friction contact.

It is provided on the inner bottom of the housing having a sound absorbing member for absorbing the vibration transmitted to the sound absorbing space.

In the sound absorbing device of the building of the present invention, by installing a weight member having an upper and lower portion supported by an elastic unit on the floor of the building, the vibration transmitted to the lower floor of the building due to the noise generated in the upper floor is transmitted to the weight member and absorbed to the lower floor. The transmitted vibrations can be attenuated or interrupted.

In addition, the lower spring is provided with a greater number than the number of the upper spring or the elastic modulus of the lower spring is formed higher than the elastic modulus of the upper spring can increase the damping efficiency of the vibration.

In addition, by providing a sound absorbing member in the lower portion of the lower spring can increase the damping efficiency of the vibration.

1 is a partial cross-sectional perspective view showing a state in which an inter-floor sound absorbing device of a building according to a first embodiment of the present invention is installed on a building floor;
FIG. 2 is an exploded perspective view illustrating an interlayer sound absorbing device of a building installed on the building floor of FIG. 1.
3 is a cross-sectional view showing the interlayer cracking device of a building according to a second embodiment of the present invention.
4 is a cross-sectional view showing the interlayer cracking device of a building according to a third embodiment of the present invention.
5 is a cross-sectional view showing the interlayer cracking device of a building according to a fourth embodiment of the present invention.
Figure 6 is a perspective view showing a first coupling means applied to the fifth embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating the interlayer cracking device of a building to which the first coupling unit of FIG. 6 is applied.
8 is a cross-sectional view showing the interlayer cracking device of a building according to a sixth embodiment of the present invention.
9 is a cross-sectional view showing the interlayer cracking device of a building according to a seventh embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in more detail the sound absorbing device between the floor according to an embodiment of the present invention.

The present invention relates to an interlayer sound absorbing device of a building installed to be embedded in a floor structure in order to absorb noise generated in an apartment house.

1 to 2, the floor structure of a conventional multi-story building is the floor slab layer 10 from the complement layer 20, lightweight foam concrete layer 30, finishing mortar layer 40 and decorative finishing layer 50 ) Is formed in sequence.

The floor slab layer 10 is made of reinforced concrete as a framework for dividing the floors of the building, and the complementary layer 20 is a buffer material for cushioning the movement of the joint surface of each floor, a damping material for vibration damping, a soundproofing material for soundproofing, Sound absorbing materials and the like are used. Lightweight foam concrete layer 30 is formed by injecting bubbles into the concrete to reduce the weight of the unit while the lightweight foam concrete having a thermal insulation effect is laminated. The finishing mortar layer 40 is formed by stacking mortar so that the decorative finishing layer 50 may be fixed to the lightweight foam concrete layer. The decorative finishing layer 50 is constructed with a floor covering or tiles to decorate the upper portion of the finishing mortar layer (40).

The interlayer sound absorbing device of the building of the present invention is embedded in the lightweight foam concrete layer (30).

The inter-floor sound absorbing device of a building according to the first embodiment of the present invention includes a housing 100 having a sound absorbing space 105 therein, a weight member 120 disposed inside the housing 100, and a weight member 120. ) Is provided with a turnable unit 130 to elastically support the inner surface of the housing 100 spaced apart.

The housing 100 has a bottom 111 formed in a plate shape, a side wall 114 formed in a rectangular frame shape extending upward from an edge of the bottom 111, and a ceiling 117 closing an upper portion of the side wall 114. It is provided.

The bottom surface of the bottom 111 is in contact with the supplement layer 20. The bottom 111 may be formed in various shapes differently from the illustrated example.

Unlike the illustrated example, the side wall 114 may be formed in various frame shapes in the same manner as the edge of the bottom 111.

The ceiling 117 is formed in the same plate shape as the bottom 111, but is formed with a downward protrusion 118 protruding downward to fit with the side wall 114. The ceiling 117 is preferably formed of a metal material so that vibration can be easily transmitted to the sound absorbing space 105.

The weight member 120 is formed in the sound absorbing space 105 of the housing 100 and is formed to have a predetermined weight so as to damp vibrations. Unlike the illustrated example, the weight member 120 may be formed in various shapes according to the shape of the sound absorbing space 105. The weight member is preferably formed of a material having a high specific gravity. For example, the weight member may be formed of a material such as metal or concrete.

In addition, the weight member 120 is supported by the elastic unit 130 so as to be spaced apart from the ceiling 117, the bottom 111 and the side wall 114 by a predetermined distance so that the weight member 120 collides with the inner surface of the housing 100. To prevent them.

The elastic unit 130 has a plurality of upper springs 131 elastically connecting the weight member 120 and the ceiling 117, and a plurality of lower portions elastically connecting the weight member 120 and the bottom 111. A spring 135 is provided. The upper spring 131 and the lower spring 135 may be fixed to the weight member 120 and the housing 100 by welding.

In the inter-floor sound absorbing device of a building according to the first embodiment of the present invention, vibration generated in the upper floor of the building is transmitted to the sound absorbing space 105 through the ceiling 117 of the housing 100. Due to the transmitted vibration, the weight member 120 vibrates. The weight member 120 may effectively damp the vibration by the upper spring 131 and the lower spring 135 connected to the upper and lower parts.

In addition, by supporting the lower portion of the weight member 120 spaced apart from the bottom 111 by the lower spring 135, the lower portion of the weight member 120 and the upper portion of the bottom 111 can be prevented from impact sound. .

Meanwhile, the interlayer sound absorbing device of the building according to the second embodiment of the present invention is shown in FIG. 3. In the building according to the second embodiment of the present invention, the sound absorbing device of the building is the same as that of the first embodiment except for the housing 100.

Referring to FIG. 3, the housing 100 of the interlayer sound absorbing device of a building according to the second embodiment of the present invention has a ceiling 117a formed in a plate shape and a rectangular frame shape extending downward from an edge of the floor 117a. And a bottom 111a for closing the lower side of the sidewall 114.

The bottom surface of the bottom 111a is in contact with the complementary material layer 20 and the upper protrusion 112 protruding upwardly to be fitted to the side wall 114 is formed. The bottom 111a may be formed in various shapes differently from the illustrated example.

The side wall 114 has a sound absorbing space 105 formed therein. Unlike the illustrated example, the side wall 114 may be formed in various frame shapes in the same manner as the edge of the bottom 111a.

The ceiling 117a is formed in the same plate shape as the floor 111a, but the ceiling 117a is preferably formed of a metal material so that vibration can be easily transmitted to the sound absorbing space 105. Unlike the illustrated example, the ceiling 117a may be formed in the same various shapes as the floor 111a.

Meanwhile, the interlayer sound absorbing device of the building according to the third embodiment of the present invention is shown in FIG. 4. In the building according to the third embodiment of the present invention, the building's interlayer sound absorbing device has the same configuration as that of the first embodiment except for the sound absorbing member 119 of the housing 100.

Referring to FIG. 4, the housing 100 of the interlayer sound absorbing device of a building according to the third embodiment of the present invention includes a sound absorbing member 119 stacked on an upper surface of the floor 111. The sound absorbing member 119 may be formed of a conventional foam material that can form a structure having a plurality of pores, for example, foamed urethane resin, foam rubber, EPS, EPP, PE, EVA and other various materials.

The housing 100 of the interlayer sound absorbing device of the building according to the third embodiment of the present invention may increase the insulation, insulation, and sound insulation of the sound absorbing space 105 by stacking the sound absorbing member 119 on the upper surface of the floor 111. It has an effect.

Meanwhile, the interlayer sound absorbing device of the building according to the fourth embodiment of the present invention is shown in FIG. 5. In the building according to the fourth embodiment of the present invention, all the constructions except for the lower spring 135 are the same as those of the first embodiment.

Referring to FIG. 5, in the building of the inter-floor sound absorbing device according to the fourth embodiment of the present invention, the lower spring 135 is provided in a larger number than the number of the upper springs 131. Unlike the illustrated example, the number of the upper spring 131 and the lower spring 135 may be the same, and the elastic modulus of the lower spring 135 may be higher than that of the upper spring 131.

In the building according to the fourth embodiment of the present invention, the floor sound absorbing device has a lower spring 135 having a larger number than the upper spring 131 or the elastic modulus of the lower spring 135 is elastic in the upper spring 131. When the vibration transmitted from the ceiling 117 is absorbed by the vibration of the weight member 120, the lower displacement of the weight member 120 is smaller than the upward displacement of the weight member 120. When the downward displacement of the weight member 120 becomes smaller than the upward displacement, the vibration of the weight member 120 is quickly canceled, thereby increasing the sound absorption efficiency.

Meanwhile, the interlayer sound absorbing device of the building according to the fifth embodiment of the present invention is shown in FIG. 7. In the building of the inter-floor sound absorbing device according to the fifth embodiment of the present invention, all configurations except for the first coupling unit 150 and the upper spring 131 are the same as in the first embodiment.

Referring to FIG. 7, the housing 100 of the interlayer sound absorbing device of a building according to the fifth embodiment of the present invention includes first coupling means 150 for coupling the lower surface of the ceiling 117 and the upper spring 131. do.

As shown in FIG. 6, the first coupling means 150 has a fixed frame 151 formed in a rectangular frame shape fixed to the bottom surface of the ceiling 117, and both ends are coupled to an inner surface of the fixed frame 151. A plurality of auxiliary frames 153 formed to be spaced apart from each other, and a plurality of hooks 155 protruding from the auxiliary frame 153 is coupled to the upper portion of the upper spring 131.

The fixing frame 151 is preferably formed smaller than the width of the inner circumferential surface of the side wall 114 so as not to interfere with the side wall 114 when coupled with the lower surface of the ceiling 117. Unlike the illustrated example, the fixing frame 151 may be formed in various shapes that may be fixed to the sound absorbing space 105 rather than the rectangular frame shape.

The hook 155 extends toward the bottom 111. Hanging ring 155 is formed to be curved in a circular shape so as to hang the upper spring (131).

The upper spring 131 is caught in the locking ring 155 is formed in a ring shape or a hook shape to be fitted with the locking ring 155.

Unlike the illustrated example, the weight member 120 has a locking ring formed therein, which can be combined with the lower portion of the upper spring 131.

The interlayer sound absorbing device of the building according to the fifth embodiment of the present invention includes the first coupling means 150, thereby increasing the coupling force between the ceiling 117 and the upper spring 131, and facilitates repair and assembly.

Meanwhile, the interlayer sound absorbing device of the building according to the sixth embodiment of the present invention is shown in FIG. 8. In the building according to the sixth embodiment of the present invention, the sound absorbing device of the building is the same as that of the first embodiment except for the first and second coupling means.

Referring to FIG. 8, the housing 100 of the interlayer sound absorbing device of a building according to the sixth embodiment of the present invention includes first coupling means for coupling the lower surface of the ceiling 117 and the upper spring 131, and the floor 111. The second coupling means for coupling the upper surface and the lower spring 135 of the).

The first coupling means has a plurality of first insertion protrusions 161 protruding to the bottom of the ceiling 117 and the upper spring 131 is inserted, and the second coupling means protrudes to the top of the bottom 111 and the lower portion. It is provided with a plurality of second insertion protrusions 165 into which the spring 135 is inserted.

The first insertion protrusion 161 is formed to protrude downward from the lower surface of the ceiling 117. The first insertion protrusion 161 is tapered to reduce the cross-sectional area as it extends from the top to the bottom. The outer diameter of the first insertion protrusion 161 is preferably smaller than the inner diameter of the upper spring 131 so that the upper spring 131 can be inserted.

The second insertion protrusion 165 is formed to protrude upward from the top surface of the bottom 111. The second insertion protrusion 165 is tapered to reduce the cross-sectional area as it extends from the bottom to the top. The outer diameter of the second insertion protrusion 165 is preferably smaller than the inner diameter of the lower spring 135 so that the lower spring 135 can be inserted.

Unlike the illustrated example, the weight member 120 may also have insertion protrusions protruding upward and downward to couple both ends of the upper spring 131 and the lower spring 135.

In the building of the inter-layer sound absorbing device according to the sixth embodiment of the present invention, the first insertion protrusion 161 is formed on the ceiling 117, and the second insertion protrusion 165 is formed on the floor 111, thereby the ceiling 117. Coupling force of the upper spring 131 and the coupling force of the bottom 111 and the lower spring 135 is increased and easy to repair and assembly.

Meanwhile, the interlayer sound absorbing device of the building according to the seventh embodiment of the present invention is shown in FIG. 9. In the building of the inter-floor sound absorbing device according to the seventh embodiment of the present invention, all configurations except for the weight member 120 are the same as those of the fifth embodiment.

Referring to FIG. 9, the weight member 120 of the interlayer sound absorbing device of the building according to the seventh embodiment of the present invention includes a third coupling unit 180 to which the upper spring 131 and the lower spring 135 are coupled. .

The third coupling means 180 has first and second friction layers 181 and 182 fixed to the upper and lower portions of the weight member 120 and in friction contact with the upper spring 131 and the lower spring 135. do.

The first friction layer 181 is fixed to the upper portion of the weight member 120 and is formed with the same area as the area of the upper surface of the weight member 120. The first friction layer 181 may be formed of a double-sided tape or rubber plate so that the upper spring 131 and the weight member 120 may be adhered or fixed by friction.

The second friction layer 182 is fixed to the lower portion of the weight member 120 and is formed with the same area as the area of the lower surface of the weight member 120. The second friction layer 182 is preferably formed of a double-sided tape or a rubber plate so that the lower spring 135 and the weight member 120 can be fixed by adhesion or friction.

In the building according to the seventh embodiment of the present invention, the upper and lower portions of the weight member 120 are provided with first and second friction layers 181 and 182 on the upper and lower portions of the weight member 120. The coupling force of the spring 131 and the coupling force of the lower portion and the lower spring 135 of the weight member 120 are increased and the repair and assembly are easy.

Hereinafter, the flaw effect of the interlayer sound absorbing device of the building according to the first embodiment of the present invention was tested.

<Shock shock sound blocking performance measurement experiment>

In order to prove the effect on the interlayer sound absorbing device of the present invention shown in Figure 2 was conducted floor shock measurement performance measurement test. The floor shock sound insulation performance measurement test was performed according to the method specified in KS F 2810-1 and KS F2810-2.

The experimental results are shown in Table 1 below.

frequency
(Hz) Lightweight Shock Sound (dB) Heavy Shock Sound (dB) A B C A B C 53 - - - 81.2 82.7 79.3 63 - - - 72.5 73.3 70.6 80 - - - 65.4 66.2 64.5 100 68.7 68.5 65.4 70.6 70.6 66.9 125 70.5 70.0 66.8 67.1 66.7 65.6 160 78.3 78.2 70.1 68.4 71.0 66.1 200 74.7 73.8 66.7 64.3 64.8 58.7 250 72.5 73.1 62.6 58.7 60.2 57.3 315 69.8 70.7 60.9 49.9 53.7 53.6 400 64.0 65.2 61.4 43.8 50.2 40.5 500 62.7 63.5 59.2 41.3 45.4 34.7 630 61.3 62.4 58.8 36.8 42.0 32.1 800 63.3 63.5 61.0 - - - 1000 63.9 63.9 59.8 - - - 1250 65.8 64.3 59.5 - - - 1600 65.8 66.9 58.1 - - - 2000 65.1 67.9 57.5 - - - 2500 63.0 66.5 57.2 - - - 3150 58.0 62.5 55.4 - - -

A of Table 1 is a bottom structure of foamed concrete with a thickness of 40 mm after laminating a 20 mm thick soft foamed resin on top of the slab, and B is a soft foamed resin having a thickness of 10 mm on top of the slab. After stacking the 10mm thick rigid foam resin on top of the foamed concrete to form a 40mm thickness, C is a flexible foamed resin having a thickness of 20mm on the top of the slab and the first embodiment of the present invention on the top After installing the sound absorbing device (thickness 30mm) of the building according to the example, it is a floor structure in which foam concrete is formed to be 40mm thick.

Referring to the results of Table 1, it was found that when the floor sound absorbing device of the building of the present invention is installed as compared with the floor structure of A and B, the floor noise is greatly reduced.

The problem part of the noise between floors of MDUs is the weight shock sound. It is important to reduce the weight shock sound of 63Hz and 125Hz, in order to calculate the weight shock sound by 63Hz, 125Hz, 250Hz, 500Hz.

As can be seen from the experimental results, in the case of the C installed with the interlayer sound absorbing device of the present invention, the weight shock sound was reduced by about 3 dB compared with the A and B structures. In the case of light impact sound, C was reduced by about 4dB compared with A and B structures. Therefore, it was confirmed that the interlayer sound absorbing device of the present invention is effective in reducing the weight shock sound and the light impact sound.

As described above, the present invention has been described with reference to one embodiment, which is merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

110 housing 120 weight member
131: upper spring 135: lower spring

Claims (9)

A housing having a sound absorbing space formed therein; and
A weight member disposed inside the housing; and
And an elastic unit for elastically supporting the weight member in the housing so that the weight member is spaced apart from the inner surface of the housing and damping the vibration of the weight member when vibration is transmitted to the sound absorbing space.
The elastic unit has a plurality of upper springs connecting the upper portion of the weight member and the inner ceiling of the housing, and a plurality of lower springs connecting the lower portion of the weight member and the inner bottom of the housing,
The elastic modulus of the lower spring is higher than the elastic modulus of the upper spring interlayer sound absorption device of the building. The method of claim 1,
The housing is an interlayer sound absorbing device of a building, characterized in that the upper portion is formed of a metal material. delete A housing having a sound absorbing space formed therein; and
A weight member disposed inside the housing; and
And an elastic unit for elastically supporting the weight member in the housing so that the weight member is spaced apart from the inner surface of the housing and damping the vibration of the weight member when vibration is transmitted to the sound absorbing space.
The elastic unit has a plurality of upper springs connecting the upper portion of the weight member and the inner ceiling of the housing, and a plurality of lower springs connecting the lower portion of the weight member and the inner bottom of the housing,
The lower spring is an inter-floor sound absorbing device of a building, characterized in that the number is provided more than the number of the upper spring. The method of claim 1,
Inside the housing is provided with a first coupling means for coupling the inner ceiling of the housing and the upper spring, and a second coupling means for coupling the inner bottom of the housing and the lower spring,
The weight member has an interlayer sound absorbing device comprising a third coupling means for coupling the upper spring and the lower spring. The method of claim 5,
The first coupling means is a fixed frame formed in the form of a rectangular frame fixed to the ceiling inside the housing, a plurality of auxiliary frames are coupled to both ends on the inner surface of the fixed frame and spaced apart from each other, in the auxiliary frame An interlayer sound absorbing device of a building, comprising: a plurality of hooks protruding from and coupled to an upper portion of the upper spring. The method of claim 5,
The first and second coupling means interlayer sound absorbing device of the building, characterized in that the projecting from the housing to the sound absorbing space is formed a plurality of insertion projections are inserted into the upper and lower springs of the upper spring. The method of claim 5,
The third coupling means is formed between the upper and lower portions of the weight member, and the lower floor of the upper spring and the upper floor of the lower spring, the interlayer sound absorbing device of a building, characterized in that the frictional contact. The method of claim 1,
And a sound absorbing member formed on an inner bottom of the housing to absorb vibrations transmitted to the sound absorbing space.

Images