KR102414565B1 - Damping Apparatus For Interlayer Noise-Proof - Google Patents

Abstract

Disclosed is a vibration absorbing body for preventing noise between floors, which is arranged in a concrete floor to support finishing mortar of an upper layer and minimize shock and noise generated from the upper layer. The vibration absorbing body comprises: a base part (2) arranged on the concrete floor and made of a synthetic rubber material in a cup shape; a spacer (4) of which the lower end passes through the base part and is fastened with a nut (3); a first washer (5) arranged and coupled to the inner face of the top of the base part (2); a second washer (6) arranged on the upper surface of an interlayer buffering material at the top of the spacer (4); and a nut (7) coupled to the spacer in a state in which the second washer (6) is interposed. Accordingly, the shock noise transmitted from the upper layer to the concrete floor is absorbed and dispersed by shock absorbing bodies arranged at regular intervals in a point-supported structure in front of a floor noise buffering material, a load of a finishing mortar layer (9) is independently supported not by the floor noise buffering material but by the shock absorbing bodies (1). Furthermore, a contact state between the finishing mortar layer (9) and a floor noise buffering material (8) is maintained to minimize floor noise and vibration generated from the upper layer from being transmitted to a lower layer, thereby solving the problems caused by floor noise.

Description

Damping Apparatus For Interlayer Noise-Proof

The present invention relates to a vibration isolator for preventing noise between floors, and in particular, in a building such as an apartment, in order to improve the cushioning and dustproof performance provided to block the transmission of the floor impact sound of the upper floor to the lower floor, the interlayer cushioning material between the floor and mortar layer It relates to a vibration isolator for preventing noise between floors arranged in a point support structure provided on the lower side.

In general, in apartment houses, floor impact and vibrations of the upper floors are transmitted to the lower floors, causing many problems of inter-floor noise, and inter-floor buffers are used to solve these problems. However, even when the same interlayer cushioning material is used, the sound insulation grade results according to the slab thickness and area are different during heavy impact, so a method for correcting this was required.

In order to solve the inter-floor noise problem, in Korean Patent Registration No. 10-2018586 (registered on August 30, 2019), an inter-floor noise buffer disposed on the top of a concrete slab, and aerated concrete laminated on top of the inter-floor noise buffer and a point support structure installed in a floor structure including a finished mortar layer poured and laminated on top of the foam concrete, a vibration-proof material inserted into a penetration formed in the shock-absorbing material, the end of which is fixed to the vibration-proof material A bolt, a first nut and a second nut fastened to the bolt, a washer with a vibration-proof pad disposed to close the hole of the through-portion on the second nut, and the second nut of the bolt to be disposed on the upper surface of the aerated concrete A vibration isolator of a point support structure has been proposed, comprising a third nut fastened at two ends.

However, in the prior art described above, the work efficiency is lowered due to the fact that the interlayer anti-vibration agent is pre-installed on the floor and a separate follow-up process that requires leveling work at each location through drilling afterwards, There was a problem in that there was a problem in that there was a problem that the quality control in the field was difficult because the vibration-proof effect that occurs depending on the material and density of the interlayer cushioning material used at the same level is different from each other.

In addition, in order not to interfere with structural safety and walking comfort, the hardness of rubber vibration dampers must be maintained at 70 or higher. Impact sound reduction methods are needed in other areas.

Korean Patent Registration No. 10-20188586 (registered on August 30, 2019)

It is an object of the present invention to solve the problems of the prior art, and to use a hardness of 70 or more in order not to interfere with structural safety and walking feeling as a vibration isolator arranged in a point support structure while using a taper with a different thickness in the vibration isolator It forms a closed space in the vibration-proof body by covering the shape of the spring and the washer, and the cushioning function by the air layer in the closed space controls the impact sound in various frequency bands caused by the load or impact caused by the finishing mortar layer, and provides a uniform vibration-proof effect. It is to provide a vibration isolator for preventing noise between floors with an improved structure so that the interlayer vibration isolator can be easily constructed on site in the state of a finished product manufactured at the factory.

In order to achieve the above object, the vibration isolator for preventing noise between floors according to the present invention is disposed on the concrete floor and supporting the finishing mortar of the upper layer while minimizing the impact and noise generated in the upper layer In a vibration isolator for preventing noise between floors ,

A base formed in a cup shape with synthetic rubber material disposed on the concrete floor layer;

A spacer that is fastened through the lower end to the base thereof;

a first washer disposed inside the upper end of the base and fastened to the spacer with a nut;

and a nut fastened to the spacer under the interposition of a second washer disposed on the upper surface of the interlayer buffer at the upper end of the spacer.

The base is formed in a cup shape, the diameter of the upper end is larger than the lower end, the head of the lower end of the spacer made of long bolts is disposed in the groove formed on the bottom surface, the concave groove is formed in the upper part, and concentrically protruding in the center of the groove A protrusion is formed.

The inner side of the upper end of the base is formed as an inclined surface to absorb shock through an elastic action generated through a difference in elastic modulus due to a change in the thickness of the upper end of the base, and the first washer is disposed on a chin formed inside the upper end of the base.

The space between the groove inside the base and the first washer is closed to have a restoring force against displacement at the tapered upper end of the base caused by an impact from the upper layer by a cushioning action by the air layer of the space.

By the vibration isolator for preventing inter-floor noise according to the present invention, the impact sound transmitted from the upper layer to the concrete floor supports the upper load by the vibration isolators having a predetermined hardness or more, which are arranged in a point support structure at regular intervals prior to the inter-floor noise cushioning material. , the load of the finishing mortar layer 9 is independently supported by the vibration isolators 1 instead of by the interlayer noise cushioning material, and the finishing mortar layer 9 and the interlayer noise cushioning material 8 are maintained in close contact with the upper layer The interlayer noise and vibration generated in the upper part of the tapered vibration isolator acts as a spring and covers the washer to form an enclosed space in the vibration isolator, and the cushioning function by the air layer in the enclosed space minimizes the transmission to the lower floors. It has the effect of resolving the problem.

1 is a schematic perspective view of a vibration isolator for preventing noise between floors according to the present invention.
Figure 2 is a schematic perspective view arranged in a point support structure on the bottom layer using the vibration isolator of Figure 1;
3 is a schematic cross-sectional view of the bottom layer in which the vibration isolator of FIG. 2 is installed.
4 is a schematic cross-sectional view showing the displacement of the vibration isolator with respect to the impact in FIG.
5 is a schematic conceptual diagram showing the spring action of the vibration isolator and the cushioning action of the air layer for the impact in FIG.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of the present invention.

1, the vibration isolator 1 for preventing inter-floor noise of the present invention includes a base 2 formed in a cup shape with a synthetic rubber material having a certain hardness in consideration of structural safety, which is disposed on a concrete floor layer, and the lower end is at the base. A spacer 4 disposed through and fastened with a nut 3, a first washer 5 disposed inside the upper end of the base 2 and fastened with a nut, on the upper surface of the interlayer cushioning material at the upper end of the spacer 4 and a nut 7 which is fastened to the bolt with the interposition of a second washer 6 disposed therebetween.

The base 2 is formed in a cup shape, the upper end having a larger diameter than the lower end, and the head 41 of the lower end of the long bolt spacer 4 is disposed in the groove 21 formed on the lower surface, and a concave groove ( 22) is formed, and concentrically protruding projections 24 are formed in the center of the grooves 22 to stably support the spacers 4 penetrating the projections. The inner side of the upper end of the base 2 is an inclined surface to have a tapered shape that varies the thickness of the synthetic rubber material according to the height. ) and stably supported.

As described above, since the base 2 is formed in a cup shape with synthetic rubber material, the thickness of the synthetic rubber material is varied according to the height of the shock transmitted from the upper layer, and the impact sound and It minimizes the transmission of vibrations to the lower floors.

2 and 3, the vibration isolators 1 according to the present invention are arranged at regular intervals on the concrete floor of the upper layer, the first washers 5 are arranged on the bottom of the interlayer cushioning material 8, and the second washers (6) in the state disposed on the upper surface of the interlayer cushioning material 8, the finishing mortar layer 9 is formed on the upper surface of the interlayer cushioning material (8). The interlayer noise cushioning material 8 may use an existing EPS material, XPS material, EVA material, or a general insulating material satisfying the physical properties of the interlayer noise cushioning material. A floor finish BF may be provided on the upper surface of the finishing mortar layer 9 .

In FIG. 4, the base 2 is formed as an inclined portion so that the thickness gradually increases toward the lower side, and is transmitted through the spacer 4 and the first washer 5 by the impact generated from the upper layer. The vertical load is absorbed as the tapered upper part spreads as much as the vertical displacement (Δt). At this time, the upper end of the base can be displaced by the difference in height between the bottom surface of the first washer 5 disposed on the chin 25 formed at the upper end of the base 2 and the central protrusion 24 . In addition, the impact force transmitted to the base through the spacer is absorbed by the elastic displacement Δt' of the lower portion in which the groove is formed.

In addition, the space between the groove 22 and the first washer 5 inside the base 2 of the vibration isolator is closed, and as a cushioning action is generated by the air layer in the space, the vibration isolator is subjected to impact from the upper layer. It has elastic restoring force with respect to

That is, when the cement-based finishing mortar is cured on the interfloor noise buffer 8 to secure uniform rigidity, the impact sound transmitted to the concrete floor is provided in a point support structure at regular intervals prior to the interfloor noise buffer 8. It absorbs and disperses the impact by the sieve (1).

As a result, in the prior art, there was a problem that the inter-floor noise cushioning material did not fully contact the concrete floor due to unevenness or inclination of the concrete floor so that it could not exert its proper function. ) are arranged at regular intervals, and the spacer 4 is fixed to the vibration isolator 1 through the interlayer noise cushioning material 8, so that the load of the finishing mortar layer 9 is not caused by the interlayer noise cushioning material and the vibration isolator 1 ), and the finishing mortar layer 9 and the interlayer noise buffer 8 are maintained in close contact to minimize the transmission of noise and vibrations between floors generated in the upper floors to the lower floors. The problem is solved.

The present invention can be used to solve a problem caused by noise generation between floors in a multi-story building.

1: Vibration isolator 2: Donation
3,7: Nut 4: Spacer
5: first washer 6: second washer
8: cushioning material 9: finishing mortar layer

Claims (4)

A base (2) formed of a synthetic rubber material disposed on the concrete floor and supporting the finishing mortar of the upper layer while supporting the finishing mortar of the upper layer and formed of a synthetic rubber material disposed on the concrete floor layer to minimize the impact and noise generated in the upper layer, and the lower end is disposed through the base and a nut ( The spacer 4 fastened by 3), the head 41 of the lower end of the spacer 4 made of a long bolt is disposed in the groove 21 formed on the bottom surface of the base 2, and is arranged and fastened inside the upper end of the base In the vibration isolator for preventing interlayer noise comprising a first washer (5) and a nut (7) fastened to the spacer under the interposition of a second washer (6) disposed on the upper surface of the interlayer buffer at the upper end of the spacer (4),
The base 2 has a cup shape with an upper end having a larger diameter than the lower end, a concave groove 22 is formed on the upper portion, and a concentrically protruding protrusion 24 is formed in the center of the groove 22,
The inner side of the upper end of the base (2) is formed with an inclined surface to absorb shock through an elastic action generated through a difference in elastic modulus due to a change in the thickness of the upper end of the base, and the first washer (5) is disposed inside the upper end of the base (2) The jaw 25 is formed so as to be
In the base 2, the space between the inner groove 22 and the first washer 5 is closed, and the inner side of the base 2 generated by the impact from the upper layer due to the cushioning action of the air layer in the space. A vibration isolator for preventing inter-floor noise, characterized in that the inclined upper part has a restoring force against deformation.
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