KR102188790B1 - Floor noise prevention mat - Google Patents

Abstract

Disclosed is an inter-floor noise prevention mat, which maximizes the buffering and sound absorption effects to effectively prevent vibration and sound from being delivered to a lower floor. To this end, the inter-floor noise prevention mat according to an embodiment of the present invention is an inter-floor noise prevention mat which is detachable to another mat, and comprises: a first buffering unit of a flat plate shape; a coupling unit which is arranged along the edge of the first buffering unit, and can be horizontally coupled to and separated from the coupling unit disposed at another mat; and a second buffering unit arranged at the lower surface of the first buffering unit, and forming an air layer between the floor and the lower surface of the first buffering unit when being mounted on the floor. The coupling unit comprises: a coupling member protruding to the outer side of the first buffering unit, and being detachable to the coupling groove disposed at another mat; and a coupling groove recessed to the inner side of the first buffering unit, and being detachable to the coupling member disposed at another mat.

Description

Floor noise prevention mat

The present invention relates to a mat for preventing interlayer noise.

In a multi-story building such as an apartment or villa, which is a modern residential type, the impact sound and vibration generated during the life of the upper-floor residents are transmitted to the lower floor intact, causing disputes between upper and lower residents.

For this reason, in families with infants and children, by laying a mat of a predetermined size in the living room, etc., to some extent prevent the impact sound and vibration transmitted to the lower floor when the child runs or play around, and at the same time prevents injury when the child falls. have.

However, in a conventional mat, the flat bottom surface is in close contact with the floor surface of a living room, and ventilation is difficult. Accordingly, after a certain period of time, mold may form on the bottom surface of the mat, or the mat is separated from the floor surface. There is a problem that becomes fluid.

In addition, most of the conventional mats are composed of a single layer of foamed synthetic resin or formed by laminating a finishing layer on the surface of the foamed synthetic resin layer. This has a problem that the effect of blocking noise and vibration does not meet expectations.

Registered Utility Model Publication No. 20-00489566 (Name: Floor noise prevention mat, registered on June 29, 2019)

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a mat for preventing interlayer noise that can efficiently prevent vibration and noise from being transmitted to the lower layer by maximizing the buffering and sound-absorbing effect. .

The subject of the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

A mat for preventing interlayer noise according to an embodiment of the present invention for solving the above problem is a mat for preventing interlayer noise that can be detachable from another mat, comprising: a first buffer unit having a flat plate shape; A coupling portion disposed along an edge of the first buffer portion and capable of being horizontally coupled and detachable to a coupling portion provided on the other mat; And a second buffer unit disposed on a lower surface of the first buffer unit and forming an air layer between the floor and the lower surface of the first buffer unit when seated on the floor, wherein the coupling unit protrudes outward from the first buffer unit. A coupling member formed and detachable to a coupling groove provided in the other mat; And a coupling groove recessed into the first buffer part and detachable to a coupling member provided on the other mat.

The coupling member may include a hook-shaped first locking member that is hooked and supported by a coupling groove provided on the other mat; A foreign material receiving groove for receiving a foreign material introduced into the gap between the first buffer part and the other mat; A 1-1 coupling guide inclined surface guiding the coupling portion of the other mat toward the foreign material receiving groove when the mat is coupled to the other mat; And a 1-2 coupling guide inclined surface formed at both ends of the coupling member in the longitudinal direction so that the width of the cross section gradually narrows along the direction in which the coupling member is coupled with the other mat. , The coupling groove, a hook-shaped second locking member that is hooked and supported by a coupling member provided on the other mat; A 2-1 coupling guide inclined surface configured to limit the coupling position of the coupling member provided on the other mat by pressing the outer surface of the coupling member provided on the other mat when the mat is coupled; And a 2-2 coupling guide inclined surface formed at both ends of the coupling groove in the longitudinal direction so that the width of the cross section gradually narrows along the direction in which the coupling groove is separated from the other mat, , The coupling part further includes a horizontal coupling magnet inserted into the outer surface of the first buffer portion and disposed between the coupling member and the coupling groove, and capable of being coupled to a horizontal coupling magnet provided on the other mat, and the first buffer portion It is formed in a hexahedral structure, and the coupling portions are disposed on the front, rear, left and right sides, respectively, to be coupled to the other mat in the front and rear directions and in the left and right directions, and the first buffer unit includes a first foam molding unit; A second foam-molding part disposed under the first foam-molding part and detachable to the first foam-molding part; An air cushion disposed between the first foamed molding part and the second foamed molding part; It is formed in a tubular shape with a flow path provided therein, communicates with the air cushion, is disposed between the first foaming molding part and the second foaming molding part, and selectively supplying air to the air cushion by opening and closing the flow path provided therein. A connector made of an elastic material configured to be; A first vertical coupling magnet disposed on a lower surface of the first foam molding part; And a second vertical coupling magnet disposed on an upper surface of the second foam molding part and capable of being coupled to the first vertical coupling magnet, wherein the connector includes the first coupling portion when the coupling portion and the coupling portion provided on the other mat are not coupled. The first buffer is disposed in a state protruding outward of the buffer unit to close the flow path provided therein, and when the coupling part and the coupling part provided on the other mat are combined, the first buffer is pressed against the connector provided on the other mat and contracted in the longitudinal direction. It is accommodated in the inside of the unit and at the same time extending in the radial direction, opening the flow path provided therein to communicate the air cushion with the air cushion provided on the other mat, and the second buffer unit is between the bottom and the lower surface of the first buffer unit A plurality of buffer cells disposed on the floor to distribute a load applied from an upper portion to the floor, and forming an air groove having a honeycomb shape between the floor and a lower surface of the first buffer unit; And an anti-slip pad attached to the plurality of buffer cells, wherein the plurality of buffer cells have a height of 1 mm or more and 3 mm or less, and are formed of the same material as the first buffer unit, or the first buffer unit is It can be formed from other hyperelastic polymers or silicone materials.

A load detection sensor disposed between the first buffer unit and the second buffer unit and configured to sense a load applied from the first buffer unit; And receiving the signal sensed from the load detection sensor, calculating the load and noise applied to the first buffer based on this, and outputting the calculated load and noise information in the form of images and sounds. It may further include a notification device.

It is disposed above the first buffer unit, further includes a third buffer unit capable of expanding and contracting, the third buffer unit is coupled to the upper surface of the first buffer unit, is formed of an elastic material, and an internal space on one side A telescopic pocket provided with an on-off valve configured to selectively communicate with the external space; And a buffer material accommodated in the expansion pocket and disposed in a compressed state, and configured to expand while inhaling the external air when the opening/closing valve is opened and in contact with external air.

According to an embodiment of the present invention, a hook-shaped fastening structure that is coupled to the other mat to limit the flow of the other mat in the vertical and horizontal directions is provided on the mat for preventing interlayer noise, thereby maximizing the fastening force and impacting from the outside. Even in the case, it is possible to prevent the mats from being separated or separated from each other.

In addition, a foreign material receiving groove is formed in a portion where the plurality of mats are connected to each other to prevent foreign matters flowing into the connection portion between the plurality of mats from penetrating into the floor, thereby preventing contamination of the floor.

In addition, a plurality of cushioning cells are formed on the lower surface of the mat supported on the floor, so that the area in which the mat directly contacts the floor is minimized, and cushioning and sound absorption power can be maximized.

In addition, a honeycomb-structured air groove is formed on the lower surface of the mat to ensure ventilation, and when a load is applied from the top, air is circulated inside the air groove to maximize the shock absorption effect, as well as to prevent the occurrence of moisture and mold. Can be prevented.

In addition, a coupling member and a coupling groove are provided along the edge of each mat, so that the mat can be combined with other mats in any direction, and the coupling member and the coupling groove are each provided with a coupling guide inclined surface to facilitate coupling between the mats. , When mats are coupled, the coupling member and the coupling groove can be automatically aligned to the set position.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a view schematically showing a state in which a mat for preventing interlayer noise according to an embodiment of the present invention is combined with another mat.
2 is a plan view showing a mat for preventing interlayer noise according to an embodiment of the present invention.
3 is a bottom view showing a mat for preventing interlayer noise according to an embodiment of the present invention.
4 is a cross-sectional view taken along line IV-IV of FIG. 2.
5 is a cross-sectional view showing a coupling structure of a portion "A" of FIG. 1.
6 is an enlarged view showing an enlarged portion "B" of FIG. 1.
7 and 8 are views schematically showing a bonding process of the mat for preventing interlayer noise and other mats according to an embodiment of the present invention.
9 is a cross-sectional view schematically showing a coupling structure of a first foamed molded part and a second foamed molded part of the mat for preventing interlayer noise according to an embodiment of the present invention.
10 is an enlarged view showing an enlarged portion "C" of FIG. 4.
11 is a front view schematically showing a mat for preventing interlayer noise according to another embodiment of the present invention.
12 is a cross-sectional view showing the internal structure of a portion "D" of FIG. 11.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described in this specification may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only intended to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it is to be understood as including all equivalents or substitutes included in the spirit and scope of the invention.

Terms including ordinal numbers such as first and second may be used to describe various elements, but these elements are not limited by the above-described terms. The above-described terms are used only for the purpose of distinguishing one component from other components.

In the present specification, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance. When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Meanwhile, a "module" or "unit" for a component used in the present specification performs at least one function or operation. In addition, the "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of "modules" or a plurality of "units" excluding "module" or "unit" to be performed in specific hardware or performed by at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

1 is a view schematically showing a state in which the mat 1 for preventing interlayer noise according to an embodiment of the present invention is coupled to the other mat 2, and FIG. 2 is a mat for preventing interlayer noise according to an embodiment of the present invention. ) Is a plan view, and FIG. 3 is a bottom view showing an interlayer noise prevention mat 1 according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2.

Referring to Figure 1, the interlayer noise prevention mat 1 (hereinafter referred to as'interlayer noise prevention mat 1)' according to an embodiment of the present invention is provided with a plurality of coupling means, the other mat 2 formed in the same shape. ), or configured to be separated.

Referring to FIGS. 1 to 3, the mat 1 for preventing interlayer noise includes a first buffer part 11, a coupling part 12, and a second buffer part 13.

1, 2 and 4, the first buffer 11 is formed in a flat plate shape having a predetermined thickness.

The first cushioning part 11 is formed in a hexahedral structure having a predetermined thickness, and coupling parts 12 are disposed on the front, rear, left and right sides, respectively, and are combined with the other mat 2 in the front and rear directions and the left and right directions. Can be. In addition, the first buffer 11 may be formed of a foam molded material or the like so as to absorb and disperse the impact when an external shock is applied thereto. However, the material of the first buffer unit 11 is not necessarily limited thereto, and may be changed to various materials capable of absorbing shock and blocking noise.

1 and 2, a plurality of coupling portions 12 are disposed along the edge of the first buffer portion 11, and coupled and separated horizontally to the coupling portion 12 provided on the other mat 2 It is configured to be. For reference, the other mat 2 may have the same structure as the mat 1 for preventing interlayer noise.

The coupling part 12 includes a coupling member 121 and a coupling groove 122.

The coupling member 121 is formed to protrude outward from the first buffer portion 11 and is detachably coupled to the coupling groove 212 provided on the other mat 2. For reference, the coupling groove 212 provided on the other mat 2 may have the same structure and shape as the coupling groove 122 provided on the mat 1 for preventing interlayer noise.

The coupling groove 122 is recessed into the first buffer part 11 and is detachably coupled to the coupling member 121 provided on the other mat 2. For reference, the coupling member 121 provided on the other mat 2 may have the same structure and shape as the coupling member 121 provided on the mat 1 for preventing interlayer noise.

5 is a cross-sectional view showing a coupling structure of a portion "A" of FIG. 1.

Referring to FIG. 5, the coupling member 121 includes a hook-shaped first locking member 121A that is caught and supported by a coupling groove 212 provided in the other mat 2, the first buffer 11 and the other mat. (2) The first to guide the foreign matter receiving groove (121B) in which the foreign matter introduced into the gap is accommodated, and the coupling part of the other mat (2) toward the foreign matter receiving groove (121B) when the mat (2) is coupled. 1 may include a coupling guide inclined surface (121C).

In addition, referring to Figure 2, the coupling member 121 is formed in a wedge structure in which the width of the cross section gradually narrows along the direction in which the coupling member 121 is coupled to the other mat 2, the coupling member ( 121) may further include a 1-2 coupling guide inclined surface 121D formed at both ends of the longitudinal direction side.

Referring back to FIG. 5, the coupling groove 122 is a hook-shaped second locking member 122A that is hooked and supported by the coupling member 211 provided on the other mat 2 and the other mat 2 It may include a 2-1 coupling guide inclined surface 122B configured to limit the coupling position of the coupling member 211 provided on the other mat 2 by pressing the outer surface of the coupling member 211 provided on the mat 2 have.

In addition, referring to Figure 2, the coupling groove 122 is formed in a wedge structure in which the width of the cross section gradually narrows along the direction in which the coupling groove 122 is separated from the other mat 2, It may further include a 2-2 coupling guide inclined surface (122C) formed respectively at both ends of the longitudinal direction.

For example, the 1-2 coupling guide inclined surface 121D provided in the coupling member 121 and the 2-2 coupling guide inclined surface 122C provided in the coupling groove 122 are the outer surfaces of the first buffer unit 11 It can be arranged to be inclined at an angle of about 45 degrees. Accordingly, the interlayer noise prevention mat 1 and the other mat 2 can be more easily combined.

6 is an enlarged view showing an enlarged portion "B" of FIG. 1.

Referring to FIG. 6, the coupling part 12 may further include a horizontal coupling magnet 123.

The horizontal coupling magnet 123 is inserted into the outer surface disposed around the first shock absorbing part 11 along the edge of the first shock absorbing part 11 to be disposed between the coupling member 121 and the coupling groove 122. I can. And, the horizontal coupling magnet 123 may be coupled by magnetically interacting with the horizontal coupling magnet 213 provided on the other mat (2). Accordingly, it is possible to more maximize the bonding force between the mat (1) for preventing interlayer noise and the other mat (2).

Meanwhile, the first buffer unit 11 may be changed to various structures capable of maximizing buffering and sound absorption performance.

7 and 8 are diagrams schematically showing a bonding process of the mat 1 for preventing interlayer noise and the other mat 2 according to an embodiment of the present invention.

Referring to FIGS. 7 and 8, the first buffer unit 11 may be provided with a plurality of members that can be coupled and separated.

Specifically, the first buffer part 11 is disposed at the top and is disposed under the first foam molding part 111 to which the impact is transmitted directly from the outside, and the first foam molding part 111 is supported on the floor, 1 It may include a second foam molding part 112 detachable from the foam molding part 111 and an air cushion 113 disposed between the first foam molding part 111 and the second foam molding part 112. For example, the first foam molding part 111 and the second foam molding part 112 are formed of a conventional foam molding material to implement a cushioning function, and the air cushion 113 is a pouch that can be filled with air inside. It can be provided in a form.

In addition, the first buffer unit 11 may further include a connector 114.

The connector 114 may be formed in a tubular shape in which a flow path 114A is provided therein to communicate with the air cushion 113. In addition, the connector 114 is disposed between the first foamed molding part 111 and the second foamed molding part 112 and supported through the first foamed molding part 111 and the second foamed molding part 112, and a flow path provided therein Air can be selectively supplied to the air cushion 113 by opening and closing 114A.

Specifically, the connector 114 protrudes to the outside of the first buffer unit 11 when the coupling portion 12 and the coupling portion 21 provided on the other mat 2 are not coupled, as shown in FIG. 7 The flow path 114A provided therein may be closed. In addition, the connector 114 is pressed against the connector 22 provided on the other mat 2 when the coupling part 12 and the coupling part 21 provided on the other mat 2 are combined as shown in FIG. The air cushion 23 provided on the other mat 2 by opening the flow path 114A provided therein while being contracted in the direction and being accommodated inside the first buffer part 11 and extending in the radial direction. Can communicate with. Through this, the air cushion 113 provided on the mat 1 for preventing interlayer noise is supplied with air from the air cushion 23 provided on the other mat 2, or the air cushion 23 provided on the other mat 2 Air can be supplied.

9 is a cross-sectional view schematically showing a coupling structure between the first foamed molded part 111 and the second foamed molded part 112 of the mat 1 for preventing interlayer noise according to an embodiment of the present invention.

Referring to FIG. 9, the first buffering part 11 is disposed on the first vertical coupling magnet 115 disposed on the lower surface of the first foaming molding part 111, and the first buffering part 11 disposed on the upper surface of the second foaming molding part 112. A second vertical coupling magnet 116 capable of magnetic interaction with the vertical coupling magnet 115 may be further included.

However, the first buffer unit 11 is not necessarily limited to its structure, and may be changed into various structures.

3 and 4, the second buffer unit 13 is disposed on the lower surface of the first buffer unit 11, and when seated on the floor, an air layer is formed between the floor and the lower surface of the first buffer unit 11 To form.

Specifically, the second buffer part 13 is disposed between the floor and the lower surface of the first buffer part 11 to distribute the load applied from the upper part to the floor, and between the floor and the lower surface of the first buffer part 11 It may include a plurality of buffer cells 131 forming an air groove 131A having a honeycomb shape.

Therefore, the interlayer noise prevention mat 1 can effectively disperse pressure through the plurality of buffer cells 131 and allow air to flow through the honeycomb-shaped air groove 131A. It is possible to prevent moisture and mold from occurring in the lower part of the prevention mat 1, as well as to keep the temperature constant.

10 is an enlarged view showing an enlarged portion "C" of FIG. 4.

Referring to FIG. 10, the second buffer part 13 may further include an anti-slip pad 132 attached to the plurality of buffer cells 131 and supported and fixed on the floor. For example, the anti-slip pad 132 may be formed of a silicon material. Accordingly, it is possible to prevent the interlayer noise prevention mat 1 seen through the non-slip pad 132 from being pushed or separated.

In addition, the plurality of buffer cells 131 protrude from the lower surface of the first buffer unit 11 to a height t of 1 mm or more and 3 mm or less, and are formed of the same material as the first buffer unit 11 or the first buffer unit 11 It may be formed of a hyper-elastic polymer or silicone material different from the part 11. However, the protruding height and material of the buffer cell 131 are not necessarily limited thereto, and may be changed to various materials.

11 is a front view schematically showing a mat 1 for preventing interlayer noise according to another embodiment of the present invention, and FIG. 12 is a cross-sectional view showing an internal structure of a portion "D" of FIG. 11.

Referring to FIG. 11, the mat 1 for preventing interlayer noise may further include a load sensing sensor 14 and a notification device 15.

The load detection sensor 14 is disposed between the first buffer unit 11 and the second buffer unit 13 and may be configured to sense a load applied from the first buffer unit 11. For example, the load sensing sensor 14 can be applied as a conventional load sensor.

The notification device 15 receives the signal sensed from the load detection sensor 14, calculates the load and noise applied to the first buffer 11 based on this, and then displays the calculated load and noise information. And it may be configured to output in the form of sound. For example, the notification device 15 receives a signal sensed from the display unit that outputs load and noise information as an image, a speaker unit that outputs load and noise information as sound, and the load detection sensor 14 It may include a communication unit that calculates the signal received from the communication unit as data on load and noise.

In addition, the interlayer noise prevention mat 1 may further include a third buffer unit 16.

The third buffer unit 16 may be disposed above the first buffer unit 11 and may have a structure capable of expanding and contracting.

Specifically, the third buffer unit 16 may include an elastic pocket 161 and a buffer material 162.

The elastic pocket 161 is coupled to the upper surface of the first buffer unit 11 and may be formed of an elastic material. In addition, an opening/closing valve 161A configured to selectively communicate the inner space and the outer space may be provided on one side of the expansion pocket 161.

The cushioning material 162 may be accommodated in the elastic pocket 161 and disposed in a compressed state. In addition, the cushioning material 162 may be expanded while inhaling external air when the on/off valve 161A is opened and in contact with external air.

Accordingly, the interlayer noise prevention mat 1 may maximize a buffering effect by additionally forming a buffer structure on the upper portion of the first buffer 11 through the third buffer unit 16.

As described above, according to an embodiment of the present invention, the hook-shaped coupling portion 12 is coupled to the other mat 2 to the interlayer noise prevention mat 1 to limit the flow of the other mat 2 in the vertical and horizontal directions. By providing, it is possible to maximize the fastening force and prevent the mats from being separated or separated from each other even when an impact is applied from the outside.

In addition, a foreign material receiving groove 121B is formed in a portion where the plurality of mats are connected to each other to prevent foreign matter introduced into the connection portion between the plurality of mats from penetrating into the floor, thereby preventing contamination of the floor.

In addition, a plurality of cushioning cells 131 are formed on the lower surface of the mat supported on the floor, so that the area in which the mat directly contacts the floor is minimized, and cushioning and sound absorption power can be maximized.

In addition, an air groove (131A) having a honeycomb structure is formed on the lower surface of the mat to ensure ventilation, and when a load is applied from the top, air is circulated inside the air groove (131A) to maximize the shock absorption effect as well as moisture. And it is possible to prevent the occurrence of mold and the like.

In addition, a coupling member 121 and a coupling groove 122 are provided along the edge of each mat, so that the mats can be coupled to each other in any direction, and the coupling member 121 and the coupling groove 122 have a coupling guide inclined surface, respectively. This arrangement facilitates coupling between mats, as well as automatically aligning the coupling member 121 and the coupling groove 122 to a set position when mats are coupled.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications may be made by those skilled in the art, and these modifications should not be individually understood from the technical idea or perspective of the present invention.

1. Floor noise prevention mat
11. The first buffer part
111. First Foam Molding Part
112. The second foam molding part
113. Air cushion
114. Connector
114A. Euro
115. First vertically coupled magnet
116. Second Vertically Coupled Magnet
12. Joint
121. Coupling member
121A. First locking member
121B. Foreign body receiving home
121C. Article 1-1 Combined guide slope
121D. Article 1-2 combined guide slope
122. Combination groove
122A. Second locking member
122B. Article 2-1 Combined guide slope
122C. 2-2 Combined guide slope
123. Horizontal coupling magnet
13. Second buffer part
131. Buffer cell
131A. Air Home
132. Non-slip pad
14. Load detection sensor
15. Notification device
16. 3rd buffer part
161. Expansion Pocket
161A. On-off valve
162. Cushioning material
2. Other mat
21. Joint
211. Coupling member
212. Combination groove
213. Horizontal coupling magnet
22. Connector
23. Air cushion

Claims (2)

As a mat for preventing interlayer noise that can be attached to other mats,
A flat plate-shaped first buffer;
A coupling portion disposed along an edge of the first buffer portion and capable of being horizontally coupled and detachable to a coupling portion provided on the other mat; And
And a second buffer unit disposed on a lower surface of the first buffer unit and forming an air layer between the floor and the lower surface of the first buffer unit when seated on the floor,
The coupling part,
A coupling member protruding outward from the first buffer portion and detachable to a coupling groove provided in the other mat; And
It is formed recessed into the inner side of the first buffer, and includes a coupling groove detachable to the coupling member provided on the other mat,
The coupling member,
A hook-shaped first locking member that is hooked and supported by a coupling groove provided on the other mat;
A foreign material receiving groove for receiving a foreign material introduced into the gap between the first buffer part and the other mat;
A 1-1 coupling guide inclined surface guiding the coupling portion of the other mat toward the foreign material receiving groove when the mat is coupled to the other mat; And
The coupling member comprises a 1-2 coupling guide inclined surfaces respectively formed at both ends of the coupling member in the longitudinal direction so as to form a wedge structure in which the width of the cross section gradually narrows along the direction in which the mat is coupled,
The coupling groove,
A second hook-shaped hook-shaped hook supported by a coupling member provided on the other mat;
A 2-1 coupling guide inclined surface configured to limit the coupling position of the coupling member provided on the other mat by pressing the outer surface of the coupling member provided on the other mat when the mat is coupled; And
The coupling groove comprises a 2-2 coupling guide inclined surfaces respectively formed at both ends of the coupling groove in the longitudinal direction so that the width of the cross-section gradually narrows along a direction in which the mat is separated from the other mat,
The coupling part,
Further comprising a horizontal coupling magnet that is inserted into the outer surface of the first buffer unit, is disposed between the coupling member and the coupling groove, and can be coupled to the horizontal coupling magnet provided on the other mat,
The first buffer portion is formed in a hexahedral structure, and the coupling portions are disposed on the front, rear, left and right sides, respectively, and can be coupled to the other mat in the front-rear direction and left-right direction,
The first buffer unit,
A first foam molding part;
A second foam-molding part disposed under the first foam-molding part and detachable to the first foam-molding part;
An air cushion disposed between the first foamed molding part and the second foamed molding part;
It is formed in a tubular shape with a flow path provided therein, communicates with the air cushion, is disposed between the first foaming molding part and the second foaming molding part, and selectively supplying air to the air cushion by opening and closing the flow path provided therein. A connector made of an elastic material configured to be;
A first vertical coupling magnet disposed on a lower surface of the first foam molding part; And
And a second vertical coupling magnet disposed on the upper surface of the second foam molding part and capable of being coupled to the first vertical coupling magnet,
The connector is disposed to protrude outward from the first buffer portion when the coupling portion and the coupling portion provided on the other mat are not coupled to close the flow path provided therein, and the coupling portion and the coupling portion provided on the other mat are coupled. When the negatives are coupled, the air provided on the other mat is pressed against the connector provided on the other mat and contracted in the longitudinal direction, accommodated inside the first buffer unit, and expanded in the radial direction to open the flow path provided therein to release the air cushion to the air provided on the other mat. Communicate with the cushion,
The second buffer unit,
A plurality of buffer cells disposed between the floor and the lower surface of the first buffer unit to distribute the load applied from the upper portion to the floor and to form an air groove having a honeycomb shape between the floor and the lower surface of the first buffer unit ; And
Includes an anti-slip pad attached to the plurality of buffer cells,
The plurality of buffer cells has a height of 1 mm or more and 3 mm or less, and is formed of the same material as the first buffer unit, or is formed of a hyper-elastic polymer or silicone material different from the first buffer unit. delete

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