KR102344024B1 - Assembling type mat with air circulation pattern - Google Patents

Abstract

The present invention relates to a prefabricated mat having an air circulation pattern, and the prefabricated mat according to an embodiment of the present invention includes a first coupling part disposed on a first unit block mat, and a second adjacent to the first unit block mat A second coupling part disposed on the unit block mat is combined, and each of the first unit block mat and the second unit block mat defines a unit block and a unit block disposed on the bottom surface in contact with the floor surface on which the prefabricated mat is laid, and defines the unit block of the bottom surface. A plurality of air circulation patterns having a predetermined depth and spacing in the horizontal and vertical directions and arranged in an area where the air circulation passages and the air circulation passages intersect to communicate with each other and having a height lower than the height of the plane of the unit block are included. can do. Accordingly, the prefabricated mat having an air circulation pattern according to an embodiment of the present invention is an air circulation pattern that allows air to be circulated through the air circulation passage in a pump-type air filled in the air circulation pattern when an external force is applied to the mat By disposing it, it is possible to smoothly circulate air at the bottom of the prefabricated mat.

Description

Prefabricated mat with air circulation pattern {ASSEMBLING TYPE MAT WITH AIR CIRCULATION PATTERN}

The present invention relates to a prefabricated mat having an air circulation pattern, and more particularly, to a prefabricated mat having an air circulation pattern that facilitates air circulation on the bottom surface of the mat in contact with the floor surface.

In general homes or kids cafes, for the purpose of preventing noise between floors, a plurality of prefabricated mats that are arranged in an assembled state to form a cushioning mat of a predetermined size are widely used. These prefab mats serve to provide a unique space for children to play and run indoors to their heart's content.

This prefabricated mat is made by combining a plurality of unit block mats constituting each unit block in the form of a thick plate. In each unit block mat, a plurality of coupling grooves and coupling pieces are alternately formed at regular intervals on the edge. In this way, the coupling grooves and coupling pieces formed in each unit block mat are coupled to each other to form a general prefabricated mat.

The coupling groove and the coupling piece of a general prefabricated mat have shapes corresponding to each other. For example, if the coupling groove has a rectangular shape, the coupling piece also has a rectangular shape to be coupled according to the shape. However, since the general prefabricated mat is coupled only according to the shape of the coupling groove and the coupling piece, when the user applies an external force on the mat, the coupling force is lowered and the problem is continuously separated.

In addition, the bottom of a general prefabricated mat comes into contact with the floor on which the prefabricated mat is laid, so air circulation on the bottom is not good, and if water or beverages fall on the mat, water may seep into the gap where the prefabricated mat is combined. And it is not easy to clean it, so there is a problem that the floor is contaminated.

The present invention has been devised to solve the above problems, and forms an air circulation pattern for air circulation on the bottom of the prefabricated mat in contact with the floor on which the prefabricated mat is laid, so that water or moisture evaporates easily. It is to provide a prefabricated mat having a circulation pattern.

The present invention is to provide a prefabricated mat having an air circulation pattern that allows the user to easily manage the prefabricated mat by improving the pattern of the upper surface of the prefabricated mat in contact with the user to facilitate cleaning while improving the aesthetics.

An object of the present invention is to provide a prefabricated mat having an air circulation pattern in which the coupling portion of the unit block mat can be made more robust by improving the coupling portion of the unit block mat constituting the prefabricated mat.

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

The prefabricated mat having an air circulation pattern according to an embodiment of the present invention includes a first coupling part disposed on a first unit block mat, and a second coupling part disposed on a second unit block mat adjacent to the first unit block mat. Each of the first unit block mat and the second unit block mat defines a unit block and unit block disposed on the bottom surface in contact with the floor surface on which the prefabricated mat is laid, and a predetermined depth and spacing in the horizontal and vertical directions of the bottom surface and may include a plurality of air circulation patterns disposed in an area where the air circulation passage and the air circulation passage intersect each other and having a height lower than the height of the plane of the unit block. Accordingly, the prefabricated mat having an air circulation pattern according to an embodiment of the present invention forms a plurality of air circulation patterns to circulate air on the lower surface of the prefabricated mat so that the air of the bottom circulates, thereby managing the bottom of the prefabricated mat can be made easier.

According to various embodiments, the plurality of air circulation patterns may have a height higher than the depth of the air circulation passage, but may have a height lower than the height of the unit block.

According to various embodiments, a plurality of flat portions and a plurality of concave portions are alternately disposed on the upper surface of each unit block mat, each flat portion and each concave portion are disposed symmetrically to each other, and a connection surface of the flat portion and the concave portion A minute step may be formed.

According to various embodiments, the flat portion and the concave portion may have the same shape and the same area.

According to various embodiments, the first coupling part includes a first protrusion disposed to protrude outwardly from the side surface of the first unit block mat, a coupling groove formed under the first protrusion, and a locking protrusion formed by protruding upward from the coupling groove. Including, the second coupling portion includes a second protrusion in contact with the first protrusion, a coupling protrusion formed under the second protrusion and having a shape corresponding to the coupling groove to be accommodated in the coupling groove, and a side surface of the coupling protrusion and the second unit block mat It is disposed between and may include a locking groove formed in a shape to accommodate the locking jaw.

Details of other embodiments are included in the detailed description and drawings.

The present invention forms a plurality of pump-type air circulation patterns having a height lower than the plane of the bottom on the bottom of the prefabricated mat, so that when an external force such as a user is located on the top of the mat is applied, the air filled in the air circulation pattern is air The air on the bottom circulates through the circulation path to facilitate evaporation of water or moisture, and at the same time, as the air filled in the air circulation pattern exits, the air circulation pattern becomes close to the floor to further prevent slipping of the mat.

The present invention can improve the aesthetics of the mat by alternately arranging a flat portion and a concave portion having a fine step on the upper surface of the prefabricated mat to form a pattern on the upper surface.

The present invention makes it easier to clean the upper surface by eliminating the existing grooves by disposing the flat portion and the concave portion on the upper surface of the prefabricated mat to have the same shape and size or a corresponding shape and size.

The present invention can prevent separation between the unit block mats by improving the shape of the coupling portion of the unit block mat constituting the prefabricated mat to be fitted secondarily, thereby further improving the bonding force.

The present invention can reduce the occurrence of trapping of foreign substances between the unit block mats by improving the coupling portion of the prefabricated mat so that a space between the unit block mats does not occur even when an external force is generated.

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

1 is a perspective view schematically showing a prefabricated mat according to an embodiment of the present invention.
Figure 2a is a plan view schematically showing the upper surface of the prefabricated mat according to an embodiment of the present invention.
FIG. 2B is a cross-sectional view taken along line a-a' of FIG. 2A.
3 is a plan view schematically showing the upper surface of a general prefabricated mat.
Figure 4 is a plan view schematically showing the bottom surface of the prefabricated mat according to an embodiment of the present invention.
5 is an enlarged view of part B of FIG. 4 and a cross-sectional view taken along line b-b'.
Figure 6a is a cross-sectional view schematically showing a part including the coupling portion of each unit block mat of the prefabricated mat according to an embodiment of the present invention.
Figure 6b is a cross-sectional view schematically showing the bonding state of the unit block mat of the prefabricated mat according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the detailed description in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments presented below, it can be implemented in various different forms, and it is understood to include all transformations, equivalents and substitutes included in the spirit and scope of the present invention. should be The embodiments presented below are provided to complete the disclosure of the present invention, and to fully inform those of ordinary skill in the art to the scope of the invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

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

1 is a perspective view schematically showing a prefabricated mat according to an embodiment of the present invention.

1, the prefabricated mat 1000 according to an embodiment of the present invention is made by assembling and connecting the unit block mat 100a and the neighboring unit block mat 100b to each other.

Each of the unit block mats 100a and 100b has a rectangular shape having the same thickness and size, and may be made of a flexible material capable of absorbing an impact, for example, EVA or urethane. The unit block mats 100a and 100b may be formed by integrally molding by injecting and releasing a flexible material into a mold. In the present embodiment, it has been described that the unit block mats 100a and 100b have a rectangular shape, but the present invention is not limited thereto, and may have various shapes, such as a triangular shape, a diamond shape, and the like.

The unit block mats 100a and 100b include a top surface 110 and a bottom surface 120, and the side surfaces, ie, edges, of the unit block mats 100a and 100b, respectively, for coupling the unit block mats 100a and 100b. The coupling part 130 is formed. In this case, the top surface 110 and the bottom surface 120 of the unit block mats 100a and 100b may have different patterns. In addition, the coupling portion 130 of any one unit block mat 100a and the neighboring unit block mat 100b has a shape corresponding to each other. According to the shape of the coupling part 130 having a shape corresponding to each other, any one unit block mat 100a and the neighboring unit block mat 100b are fitted to form the prefabricated mat 1000 .

Let's look at each configuration of the unit block mat (100a, 100b) of the prefabricated mat 1000 according to an embodiment of the present invention configured as described above. First, in order to take a closer look at the pattern of the upper surface 110 of the unit block mats 100a and 100b, the following FIGS. 2A and 2B will be referred to.

Figure 2a is a plan view schematically showing the upper surface of the prefabricated mat according to an embodiment of the present invention, Figure 2b is a cross-sectional view taken along the line a-a' of Figure 2a, Figure 3 is a general view of the top surface of the prefabricated mat schematically It is a flat view.

2a and 2b, the upper surface 110 of each unit block mat (100a, 100b) constituting the prefabricated mat 1000 according to an embodiment of the present invention is a flat portion 111 and a concave portion (112) may be alternately arranged.

The flat portion 111 is formed in a plate shape to form the upper surface 110 of the mat.

The concave portion 112 is formed in a plate shape to form the upper surface 110 of the mat together with the flat portion 111 . In this case, the concave portion 112 is formed to have a rather low height with respect to the flat portion 111 . That is, the concave portion 112 means a portion having a thickness lower than that of the flat portion 111 by the first thickness t. At this time, the first thickness (t) will preferably have a thickness that does not feel uncomfortable when the user is located on the top of the mat. For this reason, the flat portion 111 and the concave portion 112 are formed with a fine step on the connection surface of each other, and the flat portion 111 and the concave portion 112 with the minute step formed on the overall pattern of the upper surface 110 . This can improve the aesthetics of the mat.

Meanwhile, as shown in FIG. 2A , the flat portion 111 and the concave portion 112 of the upper surface 110 may be disposed symmetrically to each other. In addition, the flat portion 111 and the concave portion 112 of the upper surface 110 may be symmetrical to each other and disposed in a one-to-one correspondence. In this case, the area of the planar part 111 and the concave part 112 corresponding to one-to-one while forming symmetry may be the same. Referring to FIG. 2A , the area of the portion having a triangular shape of the symmetrical plane part 111 and the part having a triangular shape of the concave part 112 are the same, and the trapezoidal shape of the symmetrical plane part 111 is The area of the portion having the trapezoidal shape of the concave portion 112 is the same as that of the portion having the concave portion 112 . On the other hand, in Figure 2a, some of each of the flat portion 111 and some of each of the concave portion 112 has been illustrated as having a different shape, for example, a triangular shape or a trapezoidal shape, but is not limited thereto, and the same shape, For example, a plurality of flat portions 111 and a plurality of concave portions 112 having a square shape or a rectangular shape may be alternately disposed.

Referring to FIG. 3 , in a general prefabricated mat, there is a case in which grooves 10 are arranged to form a pattern of the mat. That is, a general prefabricated mat defines a pattern based on the intersection point of the grooves 10 formed in communication with the upper surface of the mat in the horizontal and vertical directions. However, in general, a user is more active on the upper surface of the prefabricated mat, and for this reason, foreign substances such as dust are inevitably caught in the groove 10 formed on the upper surface of the prefabricated mat. Since the grooves 10 formed in a general mat are generally formed in the shape of a valley having a narrow width, it is not easy to remove foreign substances caught between the grooves 10 . In contrast, the upper surface 110 of the prefabricated mat 1000 according to an embodiment of the present invention alternately arranges a flat portion 111 and a concave portion 112 having a minute step difference and has a shape and size corresponding to each other. Since there is no need to form the groove 10 formed in a general prefabricated mat by forming a pattern, it is possible to prevent foreign substances from being caught, and this can facilitate cleaning of the mat.

Next, the pattern of the bottom surface 120 of the prefabricated mat 1000 according to an embodiment of the present invention will be looked at in more detail.

4 is a plan view schematically showing a bottom surface of a prefabricated mat according to an embodiment of the present invention, and FIG. 5 is an enlarged view of part B of FIG. 4 and a cross-sectional view taken along line b-b'.

4 and 5, the bottom surface 120 of the unit block mat 100a constituting the prefabricated mat 1000 according to an embodiment of the present invention has a plurality of unit blocks 121, each unit block 121 ) to define a plurality of air circulation passages 122 and the bottom surface 120 spaced apart from each other at regular intervals and arranged to communicate with each other having a predetermined depth and spacing in the horizontal and vertical directions of the unit block 121 to define An air circulation pattern 123 may be disposed.

The plurality of unit blocks 121 are formed in a plate shape to form the bottom surface 120 of the mat. Each unit block 121 may be defined by an intersection of the air circulation passages 122 arranged to communicate in the horizontal and vertical directions.

The air circulation passage 122 is disposed to communicate with the bottom surface 120 in the horizontal and vertical directions, and has a narrow width and is disposed in the form of a valley having a constant depth. The air circulation passage 122 may be disposed in a shape corresponding to the shape of the air circulation pattern 123 . This is because the air circulation passage 122 is disposed to surround the air circulation pattern 123 . The air circulation passage 122 facilitates evaporation of moisture or moisture by having a structure in which the air of the bottom surface 120 is circulated through the neighboring air passages even when the user is positioned on the upper surface 110 and pressed. .

The air circulation pattern 123 may be located on the boundary surface of the unit block 121 . More specifically, the air circulation pattern 123 may be disposed at a point where the air circulation passage 122 disposed in the horizontal direction and the vertical direction intersect. The air circulation passage 122 is disposed around the air circulation pattern 123 in a surrounding form. Accordingly, when the user is positioned on the upper surface 110 of the mat and an external force is applied, the air in the air circulation pattern 123 is smoothly circulated through the air circulation passage 122 .

The air circulation pattern 123 may have a larger circular shape than the width of the air circulation passage 122 . Meanwhile, although the air circulation pattern 123 is illustrated as having a circular shape in FIG. 5 , the present invention is not limited thereto and may have various patterns capable of air circulation.

The air circulation pattern 123 may have a height t2 lower than the plane height t1 of the unit block 121 with respect to the upper surface 110 , which is the opposite surface of the bottom surface 120 . In more detail, the air circulation pattern 123 may have a height higher than that of the air circulation passage 122 , but may have a height lower than the plane of the unit block 121 . In this case, the height of the air circulation pattern 123 may have a height of about 1/2 of the height t1 of the plane of the unit block 121 . However, the height of the air circulation pattern 123 is not limited thereto, and it will most preferably have a height suitable for air circulation of the bottom surface of the prefabricated mat 1000 . For example, the height of the air circulation pattern 123 may be greater than 1/3 and less than 2/3 of the plane height of the unit block 121 with respect to the air circulation passage 122 . If the height of the air circulation pattern 123 is 1/3 or less of the plane height of the unit block 121, the user may feel uncomfortable when stepping on it due to the height difference between the unit block 121 and the air circulation pattern 123 In addition, when the height of the air circulation pattern 123 is 2/3 or more of the plane height of the unit block 121, there may be no significant difference in air circulation efficiency from the case in which only the air circulation passage 122 is disposed.

As such, the air circulation pattern 123 having a height lower than the unit block 121 constituting the plane of the bottom surface 120 serves as a kind of pump to facilitate air circulation in the bottom surface of the mat 120 . In other words, when the user is positioned on the upper surface 110 of the mat, the air of the air circulation pattern 123 having a height different from the plane of the bottom surface 120 moves the air circulation passage 122 by the user's pressure action. to allow air flow through it. Accordingly, the prefabricated mat 1000 according to an embodiment of the present invention has a lower height than the unit block 121 on the bottom surface 120, and an air circulation pattern ( By forming 123), the air circulation in the bottom surface 120 is made more smoothly than when only the air circulation passage 122 is arranged. Therefore, the prefabricated mat 1000 according to an embodiment of the present invention includes an air circulation pattern 123 on the bottom surface 120 so that moisture or moisture is more on the bottom surface 120 of the prefab mat 1000 in close contact with the floor. By allowing it to evaporate well or to escape, it is possible to reduce the occurrence of mold and odor due to moisture or moisture on the bottom surface 120 .

In addition, the air circulation pattern 123 formed on the bottom surface 120 of the prefabricated mat 1000 according to an embodiment of the present invention is air circulation when an external force such as a user is located on the upper surface 110 of the mat is applied. As the pattern 123 is pressed, the air filled in the air circulation pattern 123 goes out through the air circulation passage 122, and the air circulation pattern 123 comes into close contact with the floor, thereby further preventing the mat from slipping. .

Next, the coupling portion 130 of the prefabricated mat 1000 and the coupling method of the prefabricated mat 1000 according to an embodiment of the present invention will be looked at in more detail.

Figure 6a is a plan view schematically showing a part of each unit block mat including the coupling portion of the prefabricated mat according to an embodiment of the present invention, Figure 6b is a combined state of the unit block mat of the prefabricated mat according to an embodiment of the present invention is a schematic plan view of

First, referring to FIG. 6A , the prefabricated mat 1000 according to an embodiment of the present invention is coupled by a coupling unit 130 disposed on each of the unit block mat 100a and the neighboring unit block mat 100b. is done Hereinafter, for convenience of description, the unit block mat 100a is referred to as a first unit block mat 100a, and the neighboring unit block mat 100b is referred to as a second unit block mat 100b, and the first unit The coupling part of the block mat 100a will be referred to as a first coupling part 130a, and the coupling part of the second unit block mat 100b will be referred to as a second coupling part 130b.

The first coupling portion 130a of the first unit block mat 100a may be formed to protrude outward by a first length l1 from the side surface of the first unit block mat 100a, as shown in FIG. 6A . can The first coupling part 130a may include a first protrusion part 131a, a coupling groove 132a, and a locking protrusion 133a.

The first protrusion 131a may be formed to protrude outward by a second length l2 from the side surface of the first unit block mat 100a. Here, the second length l2 may be as long as the minimum width of a gap that may occur when the first unit block mat 100a and the second unit block mat 100b are combined. This first protrusion 131a comes into contact with the second protrusion of the second coupling part 130b, and due to the first protrusion 131a, the first unit block mat 100a and the second unit block mat 100b) It is possible to prevent the occurrence of minute gaps while making the bonding of the Accordingly, the prefabricated mat 1000 according to an embodiment of the present invention can further prevent foreign matter from being caught in the bonding area between the unit block mats 100a and 100b.

The coupling groove 132a is formed under the first protrusion 131a and is formed to accommodate the coupling protrusion of the second coupling part 130b. The coupling groove 132a is fitted with the coupling protrusion of the second coupling part 130b so that the first unit block mat 100a and the second unit block mat 100b are coupled.

The locking protrusion 133a is formed to protrude upward from the coupling groove 132a. The engaging projection 133a prevents the coupling protrusion of the second coupling part 130b from being separated when accommodated in the coupling groove 132a.

The second coupling portion 130b of the second unit block mat 100b may be formed to protrude outward by a fourth length 14 from the side surface of the second unit block mat 100b, as shown in FIG. 6A . can In this case, the fourth length l4 may have the same length as the first length l1 . The second coupling portion 130b may include a second protrusion 131b, a coupling protrusion 132b, and a locking groove 133b.

The second protrusion 131b may be in contact with the first protrusion 131a, and the protruding vertical length may be longer than the vertical length of the first protruding portion 131a. The second protrusion 131b may be formed to protrude outward by a fifth length 15 from the side surface of the coupling protrusion 132b. Here, the fifth length 15 may be as long as the minimum width of a gap that may occur when the first unit block mat 100a and the second unit block mat 100b are combined. In this case, the fifth length l5 may have the same length as the second length l2, which is the length at which the first protrusion 131a protrudes to the outside. In general prefabricated mats, when the user applies an external force to the part where each unit block mat is coupled, a gap occurs, foreign substances are caught in the generated gap, or each coupling part is separated, which may cause a risk of injury to the user. The prefabricated mat according to an embodiment of the present invention is a first unit block mat 100a and a second unit block mat 100b formed of a flexible material by forming a first protrusion 131a and a second protrusion 131b. Even if the user applies an external force, it is possible to prevent any gap from occurring.

The coupling protrusion 132b is formed under the second protrusion 131b and is formed to protrude downward. The coupling protrusion 132b is formed to correspond to the shape of the coupling groove 132a of the first coupling part 130a. Accordingly, the coupling protrusion 132b may be fitted into the coupling groove 132a.

The locking groove 133b may be disposed between the coupling protrusion 132b and the side surface of the second unit block mat 100b. The locking groove 133b may be formed in a shape in which the locking projection 133a can be accommodated in a direction opposite to the direction in which the coupling protrusion 132b protrudes, that is, in an upper direction. That is, the locking groove 133b may have a shape corresponding to the shape of the locking jaw 133a. Accordingly, the locking groove 133b is coupled to the coupling protrusion 133a so that the first unit block mat 100a and the second unit block mat 100b can be more firmly coupled.

In this way, the first unit block mat 100a and the second unit block mat 100b are, as shown in FIG. 6B , the coupling groove 132a of the first unit block mat 100a and the second unit block mat The engaging protrusion 132b of (100b) is fitted primarily, and the engaging protrusion 133a of the first unit block mat 100a and the engaging groove 133b of the second unit block mat 100b are secondarily fitted. It is fitted so that even if the user applies any external force, the first unit block mat 100a and the second unit block mat 100b may not be easily separated.

In the above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments No, those of ordinary skill in the art to which the present invention pertains can devise various modifications and variations from these descriptions.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1000: prefab mat 100a, 100b: unit block mat
110: upper surface 111: flat portion
112: recess 120: bottom
121: unit block 122: air circulation passage
123: air circulation pattern 130: coupling portion

Claims (5)

A prefabricated mat comprising a first coupling part disposed on a first unit block mat and a second coupling part disposed on a second unit block mat adjacent to the first unit block mat,
Each of the first unit block mat and the second unit block mat includes an upper surface and a lower surface positioned on an opposite surface of the upper surface and having a different pattern from the upper surface,
On the bottom surface of each of the first unit block mat and the second unit block mat,
a unit block disposed on the bottom surface in contact with the floor surface on which the prefabricated mat is laid;
an air circulation passage defining the unit block and having a predetermined depth and spacing in the horizontal and vertical directions of the bottom surface and arranged to communicate with each other; and
a plurality of air circulation patterns disposed in an area where the air circulation passages intersect, the plurality of air circulation patterns having a height lower than the height of the plane of the unit block;
A plurality of flat portions and a plurality of concave portions are alternately disposed on the upper surfaces of each of the first unit block mat and the second unit block mat,
Each of the flat portions and each of the concave portions are arranged to be symmetrical to each other and formed in a plate shape,
A prefabricated mat having an air circulation pattern in which a minute step is formed on a connection surface of each of the flat portions and each of the concave portions. According to claim 1,
The plurality of air circulation patterns are prefabricated mat having an air circulation pattern having a height that is higher than the depth of the air circulation passage but lower than the height of the unit block. delete According to claim 1,
The prefabricated mat having an air circulation pattern having the same shape and the same area as each of the flat portions and the respective concave portions corresponding to the respective flat portions. According to claim 1,
The first coupling part includes a first protrusion disposed to protrude outward from the side surface of the first unit block mat, a coupling groove formed under the first protrusion, and a locking protrusion formed to protrude upward from the coupling groove. do,
The second coupling part includes a second protrusion in contact with the first protrusion, a coupling protrusion formed under the second protrusion and having a shape corresponding to the coupling groove to be accommodated in the coupling groove, and the coupling protrusion and the second unit block A prefabricated mat having an air circulation pattern that is disposed between the side surfaces of the mat and includes a locking groove formed in a shape to accommodate the locking protrusion.

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