KR102776073B1 - Interfloor noise prevention mat using air tube - Google Patents

Abstract

An embodiment of the present invention discloses a construction-type inter-floor noise prevention mat using an air tube capable of minimizing the transmission of weight impact noise.
The disclosed inter-floor noise prevention mat has a mat structure of a predetermined unit size, and includes a mat body having a flat upper surface, a connecting wing and a connecting groove formed on the side for joining with an adjacent unit mat, a receiving groove formed on the lower surface, and a hollow air tube formed with a plurality of air cells and joined to the receiving groove of the mat body, and an air circulation path formed between the air cells.
According to an embodiment of the present invention, an air tube having an excellent cushioning effect is inserted into the lower part of the mat body, so that even when the soft foam mat body is compressed and hardened by a weight impact, the air layer of the air tube efficiently absorbs upper vibrations, thereby preventing the vibrations from being transmitted to the floor surface, thereby reducing interfloor noise.

Description

{Interfloor noise prevention mat using air tube}

The present invention relates to a construction-type inter-floor noise prevention mat, and more specifically, to a construction-type inter-floor noise prevention mat using an air tube capable of minimizing the transmission of weight impact noise.

In general, in buildings with two or more floors, the upper floor and the lower floor ceiling are shared as the same structure called the interfloor slab, so there is a problem that various noises generated on the upper floor are transmitted to the lower floor through the interfloor slab. In particular, in the case of apartment complexes where the floor must be shared with neighboring units, noise and vibration caused by walking, children running, objects falling, and other furniture moving are transmitted to neighboring units, causing unpleasant situations among neighbors.

Interfloor noise in apartment buildings like this can be divided into 'airborne noise' and 'impact noise', and in particular, impact noise on the floor can be divided into light impact noise mainly in the mid- and high-frequency range caused by things like falling and chair dragging, and heavy impact noise mainly in the low-frequency range caused by things like walking or children running around. In general, heavy impact noise is a sound generated by heavy objects that has a long duration and low frequency components, and light impact noise is a sound generated by light objects that has a high frequency component.

The Korean Intellectual Property Office discloses a patent publication, No. 10-2515950, regarding a 'buffer mat for building floors to reduce inter-floor noise' (hereinafter referred to as 'patent document 1'). The buffer mat of patent document 1 is formed by assembling and installing a buffer support means formed of a packing cap and a buffer packing into an assembly groove formed in the lower part of a mat body in a plate shape, wherein the inside of the buffer packing is formed as a hollow portion, and an upper cushion portion is formed on the upper part of the insertion portion inserted into the packing cap, and a lower cushion support portion supported on the building floor is formed on the lower part, so that when constructing a floor surface of a building, not only the mat body but also the upper cushion portion and the lower cushion support portion of the buffer packing perform multi-stage buffering operations.

In addition, an 'interfloor noise reduction mat' (hereinafter referred to as 'patent document 2') is disclosed in the Korean Intellectual Property Office's Patent Gazette under registration number 10-2623316. The mat of patent document 2 has an upper sheet layer constituting a mat body formed in the form of a sheet or film, a lower foam layer constituting the mat body is formed by foaming, an assembly protrusion is formed on one end of the mat body, an assembly groove is formed on the other end of the mat body opposite to the assembly protrusion so as to be mutually assembled, and a plurality of lattice-shaped airflow grooves are formed on the lower surface of the lower foam layer.

KR 10-2515950 B1 KR 10-2623316 B1

The existing commercially available thermoplastic polyurethane (TPU) film and polyurethane (PU) foam construction-type inter-floor noise prevention mats are effective to some extent for light impact noise, but have the problem that their noise prevention effect is low for heavy impact noise. In other words, the existing construction-type inter-floor noise prevention mats are made so that the PU soft foam absorbs vibrations, but even though it is a soft foam, it is constructed so that it is in close contact with the floor, and when there is a weight impact such as the heels of adults or children, the soft foam hardens as it is installed, so the vibration is inevitably transmitted to the floor as it is.

The present invention has been proposed to solve the above problems, and the problem that the present invention seeks to solve is to provide a construction-type inter-floor noise prevention mat that uses air tubes to minimize the transmission of heavy impact noise by changing the shape of polyurethane (PU) foam in the construction-type inter-floor noise prevention mat and installing air tubes that are excellent in vibration absorption, thereby capable of maximally reducing vibration transmitted to the floor surface.

An embodiment of the present invention discloses a construction-type inter-floor noise prevention mat using an air tube capable of minimizing the transmission of heavy impact noise.

The disclosed inter-floor noise prevention mat has a mat structure of a predetermined unit size, and includes a mat body having a flat upper surface, a connecting wing and a connecting groove formed on the side for joining with an adjacent unit mat, a receiving groove formed on the lower surface, and a hollow air tube formed with a plurality of air cells and joined to the receiving groove of the mat body, and an air circulation path formed between the air cells.

The above-mentioned construction-type interlayer noise prevention mat may further include a TPU film layer attached to the upper surface of the mat body.

In addition, the air tube is manufactured by cutting a fabric with an inner layer of TPU or PVC film and an outer layer of fabric, or a fabric without a fabric but made of TPU or PVC film, into a predetermined shape, overlapping the fabric with an air layer in between, forming a plurality of air cells through ultrasonic welding, injecting air into the air cells, and then sealing them.

In addition, the air tube may be formed with an inflating button at one edge to replenish air to the air cells by stepping on it, an inflating cylinder to distribute the air injected through the inflating button to other air cells, and an automatic air pressure maintenance cylinder may be formed at the other edge to automatically release air when air pressure greater than a reference value is generated in the air cell to maintain the pressure at a constant level.

In addition, the air tube and the mat body can be combined into any one of an assembled type in which the air tube is assembled under a mat body made of PE, PVC or PU foam, an integral type in which one side of the air tube is bonded to the mat body made of PE, PVC or PU foam, a sealed type in which the air tube is positioned in the middle of the mat body made of PE, PVC or PU foam so that the air tube is sealed, or a composite type in which the assembled type and the sealed type are mixed and have two air tubes.

According to an embodiment of the present invention, an air tube having an excellent cushioning effect is inserted into the lower part of the mat body, so that even when the soft foam mat body is compressed and hardened by a weight impact, the air layer of the air tube efficiently absorbs upper vibrations, thereby preventing the vibrations from being transmitted to the floor surface, thereby reducing interfloor noise.

In addition, in the past, it was necessary to add an air passage shape to the bottom surface of the mat to prevent moisture and mold, but according to the embodiment of the present invention, since the air tube is positioned on the bottom surface, an air passage is formed between small air cells by a high-frequency fusion part, so there is an advantage in that the bottom surface can breathe without having to create a separate air passage.

In addition, according to an embodiment of the present invention, the mat body and the air tube can be manufactured in various forms, such as an assembled type, an integral type, a sealed type, a composite tube type, etc., to provide a product suitable for the construction site, and in the case of an assembled type, various rigid boards can be selectively positioned between the PU foam and the air tube to provide more stable characteristics.

In addition, according to an embodiment of the present invention, since the insufficient air in the air cells can be supplemented by the inflating button and the inflating cylinder, a uniform cushioning effect can always be maintained, and when excessive air pressure is applied to the air cells, the automatic air pressure maintenance cylinder relieves the pressure, thereby preventing the air cells from being damaged, which has the advantage of being possible.

In addition, the inter-floor noise prevention mat according to an embodiment of the present invention can be directly applied to old apartments with thin inter-floor cement slabs, thereby improving the living environment of old apartments, and has the advantage of being easy to construct, thereby reducing construction costs.

Figure 1 is an exploded perspective view of an interlayer noise prevention mat according to the first embodiment of the present invention.
Figure 2 is a side view of an inter-floor noise prevention mat according to the first embodiment of the present invention.
Figure 3 is a plan view and a side view of an air tube according to the first embodiment of the present invention.
Figure 4 is a cross-sectional view of an air tube according to the first embodiment of the present invention.
Figure 5 is a flow chart showing an air tube manufacturing procedure according to the first embodiment of the present invention.
Figure 6 is a schematic diagram illustrating an air tube manufacturing process according to the first embodiment of the present invention.
Figure 7 is a plan view of an inter-floor noise prevention mat according to the second embodiment of the present invention.
Figure 8 is a bottom view of an inter-floor noise prevention mat according to the second embodiment of the present invention.
Figure 9 is a side view and a cross-sectional side view of an interlayer noise prevention mat according to the second embodiment of the present invention.
Figure 10 is a plan view of an air tube according to the second embodiment of the present invention.
Figure 11 is a bottom view and a side cross-sectional view of an air tube according to the second embodiment of the present invention.
Figure 12 is a schematic diagram of an automatic air pressure maintenance cylinder used in an embodiment of the present invention.
Figure 13 is a drawing showing various examples of combinations of the mat body and the air tube in the interlayer noise prevention mat according to the present invention.
Figure 14 is a plan view of an interlayer noise prevention mat according to the third embodiment of the present invention.
Figure 15 is a bottom view of an interlayer noise prevention mat according to the third embodiment of the present invention.
Figure 16 is a cross-sectional side view of an interlayer noise prevention mat according to the third embodiment of the present invention.
Fig. 17 is a plan view of an air tube according to the third embodiment of the present invention.
Figure 18 is a bottom view and a side cross-sectional view of an air tube according to a third embodiment of the present invention.
Figure 19 is a performance comparison graph of an inter-floor noise prevention mat according to an embodiment of the present invention.

The advantages and features of the present invention and the methods for achieving them will become apparent with reference to the embodiments described in detail below together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform a person skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

Hereinafter, the specific details for carrying out the present invention will be described in detail with reference to the attached drawings. Regardless of the drawings, the same reference numerals refer to the same components, and "and/or" includes each and every combination of one or more of the mentioned items.

Although the terms first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another.

Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical concept of the present invention.

The terminology used herein is for the purpose of describing embodiments only and is not intended to limit the invention. In this specification, the singular also includes the plural unless specifically stated otherwise. The terms "comprises" and/or "comprising" as used herein do not exclude the presence or addition of one or more other components in addition to the components mentioned.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with a meaning that can be commonly understood by a person of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries shall not be ideally or excessively interpreted unless explicitly specifically defined.

The spatially relative terms "below," "beneath," "lower," "above," "upper," and the like can be used to easily describe the relationship of one component to other components as depicted in the drawings. The spatially relative terms should be understood to include different orientations of the components when used or operated in addition to the orientations depicted in the drawings. For example, if a component depicted in the drawings is flipped over, a component described as "below" or "beneath" another component may be placed "above" the other component. Thus, the exemplary term "below" can include both the above and below orientations. The components may also be oriented in other directions, and thus the spatially relative terms may be interpreted according to the orientation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

First, the inter-floor noise prevention mat according to an embodiment of the present invention uses an air tube that has an excellent cushioning effect even for heavy impact noise, and such an air tube can be manufactured in various shapes. In the embodiments of the present invention, for the convenience of understanding, a first embodiment uses an air tube in which air cells are completely sealed, a second embodiment uses an air tube in which the air cells are connected through an air passage so that air can be replenished through an inflating button and the air cells can be prevented from being damaged by excessive air pressure by an automatic air pressure maintenance cylinder, and a third embodiment uses an air tube from which some of the air cushions are removed in order to support a heavy object placed on the floor while being able to replenished through an inflating button and preventing damage to the air cells by an automatic air pressure maintenance cylinder. The structures of the mat bodies in the first to third embodiments, excluding the air tubes, can all be implemented in the same shape.

<Example 1>

FIG. 1 is an exploded perspective view of an interlayer noise prevention mat according to a first embodiment of the present invention, FIG. 2 is a side view of an interlayer noise prevention mat according to the first embodiment of the present invention, FIG. 3 is a plan view and a side view of an air tube according to the first embodiment of the present invention, and FIG. 4 is a cross-sectional view of an air tube according to the first embodiment of the present invention.

The inter-floor noise prevention mat (100) according to the first embodiment of the present invention, as illustrated in FIGS. 1 and 2, may be composed of a mat structure having a predetermined unit size, a flat upper surface, a connecting wing (114) and a connecting groove (116) formed on the side for joining with an adjacent mat during construction, a receiving groove (112) formed on the lower surface, a mat body (110) made of a predetermined foam material, a plurality of air cells (126) divided by high-frequency fusion and joined to the receiving groove (112) of the mat body (110), a hollow air tube (120) that allows the floor surface to breathe by means of an air circulation path (127) formed between the air cells by high-frequency fusion, and a TPU film layer (130) attached to the upper surface of the mat body (110).

Referring to FIGS. 1 and 2, the mat body (110) can be manufactured by foaming PE, PVC, or PU foam into a mold, and has a flat upper surface and a receiving groove (112) formed on the lower surface for mounting an air tube (120). In addition, small grid-shaped grooves (112a) for receiving air cells (126) can be formed inside the receiving grooves (112), and connecting wings (114) and connecting grooves (116) can be formed on each of the four sides for fastening to adjacent mats during construction. The structure of the mat body (110) can be the same as the structure of the mat body (210) of the second embodiment, which will be described later.

Therefore, the inter-floor noise prevention mat according to the embodiment of the present invention can be constructed in four directions in such a way that unit mats of a certain size are mutually fitted and connected by means of connecting wings and connecting grooves, so that they can be assembled into a single, stable sheet as a whole. To this end, the connecting wings (114) and connecting grooves (116) of each mat are arranged in an alternating manner so that the connecting wings of one mat can be fastened to the connecting grooves of the other mat.

In addition, the air tube (120) according to the first embodiment of the present invention is manufactured by cutting a fabric in which the inner layer is made of a TPU or PVC film (121) and the outer layer is made of a fabric (122), or a fabric made of a TPU or PVC film (121) without a fabric, into a predetermined shape, overlapping the fabrics with an air layer in between, forming a plurality of air cells (126) through ultrasonic welding, injecting air into the air cells (126) and sealing them, as shown in FIGS. 3 and 4, and an air flow path (127) can be formed in the ultrasonic welding portion (124) between the air cells. FIG. 3 (A) is a plan view of the air tube according to the first embodiment, and (B) is a side view of the air tube according to the first embodiment.

In addition, (A) of FIG. 4 is a side cross-sectional view of an air tube according to the first embodiment, (B) is a schematic cross-sectional view enlarged of the air cell (k) illustrated in (A), showing an example in which the air cell (k) has a total of four layers, two upper layers and two lower layers. (C) is a schematic cross-sectional view enlarged of the air cell (k) illustrated in (A), showing an example in which the air cell (k) has a total of three layers, one upper layer and two lower layers, and (D) is a schematic cross-sectional view enlarged of the air cell (k) illustrated in (A), showing an example in which the air cell (k) has a total of two layers, one upper layer and one lower layer.

Referring to FIG. 4, the air tube (120) used in the first embodiment of the present invention may be implemented in any one of the following forms: a four-layer structure in which the inner layer is made of a TPU or PVC film (121) and the outer layer is made of a fabric (122), with air filled between the upper and lower structures; a three-layer structure in which the upper layer is made of a TPU or PVC film (121) and the lower layer is made of a TPU or PVC film (121) and a fabric (122); or a two-layer structure in which both the upper and lower layers are made of a TPU or PVC film (121) without using a fabric. In this case, the fabric (122) may be a low-cost fabric such as nylon to reduce costs, and TPU or PE may cause noise or air cells to burst due to friction with the floor, so the fabric is coated to prevent this.

The air tube (120) of the first embodiment can be manufactured in the following manner.

FIG. 5 is a flowchart illustrating an air tube manufacturing procedure according to the first embodiment of the present invention, and FIG. 6 is a schematic diagram illustrating an air tube manufacturing process according to the first embodiment of the present invention.

Referring to FIGS. 5 and 6, a TPU-coated fabric sheet is cut into a square sheet having an air inlet (123) on one side as shown in (A) of FIG. 6, and two sheets are overlapped (S1). In the embodiment of the present invention, the air tube (120) can be implemented in any one of two layers (2 Layers) to four layers (4 Layers) as described above.

Then, the overlapping TPU-coated fabric sheets are high-frequency fused as shown in Fig. 6 (B), and the edge portion except for the air inlet (123) is sealed by the high-frequency fusion section (124) so that a plurality of air cells (126) are formed, and each air cell (126) is formed so that air can be injected through an air passage (125) (S2).

Then, air is injected through the air inlet (123) to fill the entire air cell (126) with air as shown in (C) of Fig. 6 (S3). At this time, each air cell (126) receives air from an air cell adjacent to the air inlet (123) through an air passage (125), thereby filling the entire air cells (126) with air.

When the air injection into the air cells (126) is completed, only the air injection port (123) and the air passage (125) section are re-fused through secondary high-frequency welding as shown in (D) of Fig. 6 to completely seal the air cells (126) (S4).

And when the air inlet (123) is removed as shown in (E) of Fig. 6, an air tube (20) having air cells (126) and an air distribution path (127) is completed (S5).

<Example 2>

FIG. 7 is a plan view of an interfloor noise prevention mat according to a second embodiment of the present invention, FIG. 8 is a bottom view of an interfloor noise prevention mat according to a second embodiment of the present invention, FIG. 9 is a side view and a side sectional view of an interfloor noise prevention mat according to a second embodiment of the present invention, FIG. 10 is a plan view of an air tube according to a second embodiment of the present invention, FIG. 11 is a bottom view and a side sectional view of an air tube according to a second embodiment of the present invention, and FIG. 12 is a schematic diagram of an automatic air pressure maintenance cylinder used in an embodiment of the present invention.

According to the second embodiment of the present invention, the inter-floor noise prevention mat (200) may be configured, as shown in FIGS. 7 to 12, with a mat structure having a flat upper surface and a predetermined unit size, and having connecting wings (214) and connecting grooves (214) formed therein for joining with adjacent mats when extended laterally, and a receiving groove (212) formed on a lower surface, a mat body (210) made of a predetermined foam material, a plurality of air cells (222) divided by high-frequency fusion and joined to the receiving grooves (212) of the mat body (210), and a hollow air tube (220) that allows the floor surface to breathe by means of air circulation channels (228) formed between air cells by high-frequency fusion, and a TPU film layer (230) attached to the upper surface of the mat body (210).

Referring to FIGS. 7 to 12, the mat body (210) can be manufactured by foaming PE, PVC, or PU foam into a mold, and has a flat upper surface and a receiving groove (212) formed on the lower surface for mounting an air tube (220). In addition, connecting wings (214) and connecting grooves (216) can be formed on each of the four sides of the mat body (210) for fastening to adjacent mats during construction. Therefore, the interlayer noise prevention mat (200) according to the embodiment of the present invention can be constructed in four directions by mutually fitting and connecting unit mats of a certain size by means of the connecting wings (214) and connecting grooves (216), and can be assembled into a single, stable sheet overall.

In addition, according to the second embodiment of the present invention, an air tube (220) is formed by ultrasonically fusing a TPU film-coated fabric or a TPU or PVC film without a fabric, so that a plurality of air cells (222) are formed, and an inflating button (224) for replenishing air to the air cells by stepping on it with a foot and an inflating cylinder (225) for distributing the air injected through the inflating button (224) to other air cells are formed at one edge, and an automatic air pressure maintenance cylinder (226) for automatically releasing air when air pressure greater than a reference value is generated to maintain the pressure at a constant level may be formed at the other edge, and an air flow path (228) may be formed at the ultrasonic fusing portion between air cells.

The air tube (120) of the second embodiment can be manufactured by applying the procedure for manufacturing the air tube of the first embodiment described above, while maintaining an air passage for injecting air into each air cell. In addition, the inflating button (224) has an elastic sponge inserted therein and is connected to the inflating cylinder (225) by a one-way air passage so that air can flow from the inflating button (224) to the inflating cylinder (225), but cannot flow in the reverse direction.

Accordingly, when the inflating button (224) is stepped on with the foot to replenish air in the air cell (222), the inflating button (224) is compressed flat and the air in the inflating button (224) is injected into the inflating cylinder (225), and when the foot is removed, the air passage between the inflating cylinder (225) and the inflating button (224) is blocked and the inflating button (224) is restored to its original shape by the elasticity of the sponge and sucks in outside air. To this end, the inflating button (224) is designed so that outside air can only flow in through the one-way air passage and cannot flow in the reverse direction.

In addition, in the air tube (220) according to the second embodiment of the present invention, when a high load due to a weight impact such as a heel of an adult or a child is transmitted to the air cell (222), a strong air pressure is generated inside the air cell (222), which may cause the air cell (222) to burst or tear. Therefore, to prevent this, an automatic air pressure maintenance cylinder (226) is formed on one edge to automatically release air when an air pressure greater than a reference value is generated in the air cell (222) to maintain the pressure at a constant level.

As shown in Fig. 12, this automatic air pressure maintenance cylinder (226) may be composed of a sponge (226-1), an elastic spring (226-3) that provides elasticity corresponding to a reference value, and a plate (226-2) that blocks an air outlet (226-4) by the elasticity of the elastic spring (226-3) and then opens the air outlet (226-4) to release air when air pressure greater than the reference value is generated.

FIG. 13 is a drawing showing various examples of combinations of a mat body (110) and an air tube (120) in an inter-floor noise prevention mat according to the present invention, where (A) shows an assembled type, (B) shows an assembled type with sheet, (C) shows an integrated type, (D) shows a sealed type, and (E) shows a mixed type where the sealed type and the assembled type are mixed.

Referring to FIG. 13, the structure of the interlayer noise reduction mat using an air tube according to an embodiment of the present invention is not limited to one, and can be made in various structures such as an assembled type, an integral type, a sealed type, and a composite tube type.

Fig. 13 (A) is an example of an assembled air tube interlayer noise reduction mat, which has a structure in which an air tube (120) is assembled under a mat body (110) made of PE, PVC or PU foam, and a TPU film (130) is attached on top of the mat body.

(B) of Fig. 13 is a modified example of an assembled air tube interlayer noise reduction mat. Since the small air cells (126) inside the air tube (120) are filled with air, there is no significant difficulty in keeping the center of gravity even when a person stands on the mat. However, a more stable structure is manufactured by positioning various rigid sheets (sheets; 140) between the mat body (110) made of PU foam and the air tube (120).

Fig. 13 (C) is an example of an integrated air tube interlayer noise reduction mat, which is structured such that when manufacturing a mat body (110) using PU foam, an air tube (120) is positioned inside a mold so that one side of the air tube (120) is bonded to the mat body (110) made of PU foam.

Fig. 13 (D) is an example of a sealed air tube interlayer noise reduction mat, in which the mat body (110) is manufactured using PU foam foam, and an air tube (120) is positioned in the middle of the PU foam to form a completely sealed structure. In this case, it is desirable to form an air circulation path (127) on the bottom surface.

Fig. 13 (E) is an example of a mixed-type air tube interlayer noise reduction mat, which has a structure that combines an assembled type and a sealed type, and has two air tubes (120-1, 120-2).

According to this embodiment of the present invention, an inter-floor noise prevention mat is prepared by combining the air tube (120) and the mat body (110) in various forms, and then an appropriate structure can be selected and constructed according to the situation at the construction site.

<Example 3>

FIG. 14 is a plan view of an interfloor noise prevention mat according to a third embodiment of the present invention, FIG. 15 is a bottom view of an interfloor noise prevention mat according to a third embodiment of the present invention, FIG. 16 is a side cross-sectional view of an interfloor noise prevention mat according to a third embodiment of the present invention, FIG. 17 is a plan view of an air tube according to a third embodiment of the present invention, and FIG. 18 is a bottom view and side view of an air tube according to a third embodiment of the present invention.

The third embodiment of the present invention removes a part (320q) of the air tube from the inter-floor noise prevention mat (320) and fills the removed part (320q) with a mat body (310) made of PU foam material so that it can support a heavy object such as a desk or wardrobe.

According to the third embodiment of the present invention, the inter-floor noise prevention mat (300) may be configured, as shown in FIGS. 14 to 18, with a mat structure having a flat upper surface and a predetermined unit size, and having connecting wings (314) and connecting grooves (316) formed for joining with adjacent mats when expanded laterally, and a receiving groove (312) formed on a lower surface, a mat body (310) made of a predetermined foam material, a plurality of air cells (323) divided by high-frequency fusion and joined to the receiving grooves (312) of the mat body (310), and a hollow structure air tube (320) that allows the floor surface to breathe by means of air circulation channels (328) formed between air cells by high-frequency fusion, and a TPU film layer (330) attached to the upper surface of the mat body (310).

Referring to FIGS. 14 to 18, the mat body (310) can be manufactured by foaming PE, PVC, or PU foam into a mold, and has a flat upper surface and a receiving groove (312) formed on the lower surface for mounting an air tube (320). At this time, the shape of the receiving groove is such that when a square is divided into four parts, one side is removed and only 3/4 of the part can be inserted. The 1/4 part (320q) without the air tube is filled with the mat body (310) that is harder than the air cushion so that it can support heavy objects such as a desk or chest of drawers.

In addition, the four sides of the mat body (310) may be formed with connecting wings (314) and connecting grooves (316) for fastening to adjacent mats during construction. Accordingly, the inter-floor noise prevention mat (300) according to the embodiment of the present invention may be constructed in four directions in a manner in which unit mats of a certain size are mutually fitted and connected by connecting wings (314) and connecting grooves (316), and may be assembled into a single, stable sheet as a whole.

In addition, according to the third embodiment of the present invention, an air tube (320) is formed by ultrasonically fusing a TPU film-coated fabric or a TPU or PVC film without a fabric, so that a plurality of air cells (322) are formed, and an inflating button (324) for replenishing air to the air cells by stepping on it with a foot and an inflating cylinder (325) for distributing the air injected through the inflating button (324) to other air cells are formed at one edge, and an automatic air pressure maintenance cylinder (326) for automatically releasing air when air pressure greater than a reference value is generated to maintain the pressure at a constant level may be formed at the other edge, and an air flow path (328) may be formed at the ultrasonic fusing portion between air cells.

In addition, the air tube (320) according to the third embodiment of the present invention is formed in a form in which, like the insertion groove, when a square is divided into four equal parts, one side (320q) is removed so that only 3/4 of the square can be inserted.

The air tube (320) of the third embodiment can be manufactured using the same method as the procedure for manufacturing the air tube (220) of the second embodiment described above, but only by changing the formation of the cut sheet when cutting the TPU-coated fabric or TPU or TE film fabric. In addition, the inflating button (324) has an elastic sponge inserted inside and is connected to the inflating cylinder (325) by a one-way air passage so that air can flow from the inflating button (324) to the inflating cylinder (325), but air cannot flow in the opposite direction.

Accordingly, when the inflating button (324) is stepped on with the foot to replenish air in the air cell, the inflating button (324) is compressed flat and the air in the inflating button (324) is injected into the inflating cylinder (325), and when the foot is removed, the air passage between the inflating cylinder (325) and the inflating button (324) is blocked and the inflating button (324) is restored to its original shape by the elasticity of the sponge to suck in outside air. To this end, the inflating button (324) is designed so that outside air can only flow in through the one-way air passage and cannot flow in the reverse direction.

In addition, in the air tube (320) according to the third embodiment of the present invention, when a high load due to a weight impact such as a heel of an adult or a child is transmitted to the air cell (322), a strong air pressure is generated inside the air cell (322), which may cause the air cell (322) to burst or tear. Therefore, to prevent this, an automatic air pressure maintenance cylinder (326) is formed on one edge to automatically release air when an air pressure greater than a reference value is generated in the air cell (322) to maintain the pressure at a constant level.

The inter-floor noise prevention mat (300) of this third embodiment is identical to the second embodiment except that the shape of the air tube (320) and the insertion groove (312) into which the air tube (320) is inserted is such that when a square is divided into four equal parts, one-fourth side (320q) is removed so that only three-fourths can be inserted, and therefore further description thereof will be omitted.

Figure 19 is a performance comparison graph of an inter-floor noise prevention mat according to an embodiment of the present invention, where the vertical axis (Y-axis) represents the noise level (unit: dB(A)) and the horizontal axis (X-axis) represents the number of tests.

When comparing a prototype of an inter-floor noise prevention mat using an air tube according to an embodiment of the present invention with a product of a third party, it was confirmed that the inter-floor noise prevention mat according to an embodiment of the present invention was superior to the product of a third party in terms of inter-floor noise suppression characteristics, as shown in the graph of Fig. 19.

Referring to Fig. 19, the test method was to prepare for the test by installing mats of the same size, Company A mats, Company B mats, Company C mats, and the mat of the present invention, in an apartment with an interfloor cement thickness of 310 mm, before starting the test, and then positioning a noise meter 125 cm away from the living room floor of the lower floor to the microphone.

And before the start of the test, the background noise on the lower floor was measured for 30 seconds to check the average dB(A), and then the landing place of a child weighing 17.5 kg on the upper floor was set at the same position as the noise meter on the lower floor. Then, the noise on the lower floor was measured at the same time as the child standing on a 27 cm high chair on the upper floor jumped up about 20 cm and landed on the floor.

According to the test result graph, the noise was the greatest in the living room floor condition before the installation of the inter-floor noise prevention mat, and when the inter-floor noise prevention mat was installed, the overall noise was reduced, confirming the noise prevention effect. In particular, it was confirmed that the inter-floor noise prevention mat using an air tube according to the embodiment of the present invention had the greatest noise reduction effect.

Although the embodiments of the present invention have been described with reference to the above and the attached drawings, those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

100,200,300: Interfloor noise prevention mat 110,210,310: Mat body
120,220,320: Air tube 130,230,330: TPU film
112,212,312: Insert groove 114,214,314: Connecting wing
116,216,316: Connection Home 126,222,322: Air Cell
127,228,328: Air circulation 224,324: Inflating button
225,325: Inflating cylinder 226,326: Automatic air pressure maintenance cylinder

Claims (5)

A mat body having a mat structure of a predetermined unit specification, the upper surface being flat, the side surface having connecting wings and connecting grooves for joining with adjacent unit mats, and the lower surface having a receiving groove formed; and
It includes a hollow air tube made of a plurality of air cells, which is connected to the receiving groove of the mat body, and has an air circulation path formed on the outside between the air cells.
The above air tube
It is manufactured by cutting a fabric with an inner layer of TPU or PVC film and an outer layer of fabric or a fabric without a fabric but made of TPU or PVC film into a predetermined shape, overlapping the cut fabrics upper and lower with an air layer in between, and ultrasonically fusing them to form a number of air cells in a shape that is symmetrical above and below, and connecting adjacent air cells with air passages from the inside, and then injecting air into each air cell and sealing it.
One air cell located at one corner of the above multiple air cells is implemented as an inflating cylinder for distributing the injected air to other air cells.
The inflating cylinder is connected to the inflating cylinder by a one-way air passage so that air can flow through it but cannot flow in the opposite direction, and an elastic sponge is inserted inside so that when stepped on, it is compressed and injects the air inside into the inflating cylinder, and when the foot is removed, the air passage with the inflating cylinder is blocked and the elasticity of the sponge restores the original shape, allowing outside air to be sucked in and replenishing air to the air cells, characterized by having an inflating button.
Interfloor noise prevention mat using air tubes. In the first paragraph, the construction-type interlayer noise prevention mat
It is characterized by further including a TPU film layer attached to the upper surface of the mat body.
Interfloor noise prevention mat using air tubes. delete In the first paragraph, the air tube
An automatic air pressure maintenance cylinder is formed on the other side edge to automatically release air when air pressure greater than the standard value is generated in the air cell to maintain the pressure at a constant level.
The above automatic air pressure maintenance cylinder
It is characterized by comprising a sponge, an elastic spring that provides elasticity corresponding to a reference value, and a plate that blocks the air outlet by the elasticity of the elastic spring and opens the air outlet to release air when air pressure greater than the reference value is generated.
Interfloor noise prevention mat using air tubes. In the first paragraph, the air tube and the mat body,
An assembled type with an air tube assembled under a mat body made of PE, PVC or PU foam.
One side of the air tube is an integral type that is bonded to the mat body made of PE, PVC or PU foam.
A sealed type is created by placing an air tube in the middle of a mat body made of PE, PVC or PU foam, and the air tube is sealed.
It is characterized by combining the assembled type and the sealed type into one of the composite types with two air tubes.
Interfloor noise prevention mat using air tubes.