KR102431092B1 - Multi-material grass protecting mat - Google Patents

Abstract

The present invention provides a lawn protection mat made of various materials. The lawn protection mat made of various materials includes: a frame positioned upwardly away from the ground, on which a turf is laid, and having grass passage holes; support pillars placed on the ground and integrated with the frame to extend vertically from vertices of each grass passage hole; and an anti-dent member for preventing dents through surface contact with the ground, provided only at anti-dent grass passage holes which are some of the grass passage holes, provided with a material different from the materials of the frame and the support pillars, and integrally connected to connecting sides of the anti-dent member, wherein the connecting sides are sides surrounding each anti-dent grass passage hole. Various materials can be selected, and thus various functions can be imparted.

Description

Multi-material lawn protection mat {MULTI-MATERIAL GRASS PROTECTING MAT}

The present invention relates to a turf protection mat installed in a turf growing area together with a turf to protect the turf, and more particularly, to a turf protection mat made of a variety of materials in which the material of the depression preventing member and the material of the other members are different. .

Grass is a perennial grass that grows in fields or mountains in groups with short roots attached. Today, grass is artificially grown in various areas for landscaping, preventing injuries to athletes, and preventing soil from collapsing.

The turf growing area is generally created by laying a turf (a piece of grass removed from the roots with soil attached) on the ground and growing the turf turf. However, in this case, if a load by pedestrians or vehicles traveling in and out of the grass growing area is repeatedly applied to the grass, there is a problem in that the grass cannot grow. Therefore, when creating a grass growing area, a lawn protection mat is installed in parallel to prevent a load from being applied to the lawn.

In general, a lawn protection mat includes a frame having regularly arranged lawn passage holes, and support posts extending downward from the frame to be positioned around the lawn passage holes. When the turf protection mat is installed on the ground, the lower ends of the support posts are in contact with the ground, thereby providing space for the turf to be located while the frame is supported by the support posts while being separated upward from the ground. Such grass protection mats are manufactured by injection molding. And depending on the area of the turf growing area, as few as tens of sheets or as many as thousands of turf protection mats are combined with each other and installed on the ground of the turf growing area.

If a load from pedestrians or vehicles is repeatedly applied to the grass protection mat, the support posts may dig into the ground and the grass protection mat may collapse. . In this case, the depression preventing member is provided in the form of connecting two adjacent support pillars as disclosed in Registered Utility Model No. 20-0354896 (grass protection mat), or registered in Patent No. 10-1844876 (grass protection mat). It is provided on a support pole as disclosed, or it is provided on a part of the frame surrounding the grass passage hole as disclosed in Patent Registration No. 10-1598680 (grass protection mat), or registered patent No. 10-0898546 (grass protection mat) As disclosed in , it may be provided to be located in the grass passage hole.

Registered Utility Model No. 20-0354896 (lawn protection mat) Registered Patent No. 10-1844876 (lawn protection mat) Registered Patent No. 10-1598680 (lawn protection mat) Registered Patent No. 10-0898546 (lawn protection mat)

Since the above conventional lawn protection mat is manufactured by injection molding, it has no choice but to have a single material, and thus, there are several disadvantages in the conventional lawn protection mat.

For example, the anti-recession member should not interfere with photosynthesis of the turf while exhibiting the function of preventing the collapse of the turf protection mat. , there is a disadvantage that the shape and the like must be limited.

In addition, it is good that the turf protection mat has ductility so that it can be installed on a curved ground. Then, in the conventional turf protection mat, the depression preventing member also has ductility. There are also disadvantages that the function cannot be improved.

Accordingly, an object of the present invention is to provide a lawn protection mat that not only solves the above disadvantages of the prior art, but can also exhibit various advantages that cannot be expected from the conventional lawn protection mat.

The present invention is positioned away from the ground on which the turf is laid, the frame having turf through holes; Supporting pillars formed integrally with the frame so as to extend up and down from the vertices of each grass passage hole and placed on the ground; and to prevent depression through surface contact with the ground, provided only in the turf passage holes for preventing depression which are some of the turf passage holes, and provided with a material different from the material of the frame and the support pillars, each depression Provides a turf protection mat made of a variety of materials, including; a depression prevention member integrally connected to the sides surrounding the prevention turf passage hole.

The depression preventing member may be made of a material that transmits visible light, or may be made of a material having a higher strength than the material of the frame. In addition, the depression preventing member may be provided in the form of a convex dome toward the ground.

The frame and the support pillars may be made of a biodegradable material.

The multi-material lawn protection mat may be manufactured by heterogeneous injection molding in which the depression preventing member is molded before the frame and the supporting pillars.

According to the present invention, since the material of the depression prevention member can be selected in various ways, various functions other than the depression prevention function can be given to the depression prevention member, and the effect that the depression prevention member can be firmly coupled to the frame occurs. .

In addition, according to the present invention, since the depression preventing member can transmit visible light, the design of the depression preventing member is much more free than in the prior art.

In addition, according to the present invention, since the depression preventing member has greater strength than the frame, there is an effect that the depression preventing function of the depression preventing member can be further improved compared to the prior art.

In addition, according to the present invention, due to the biodegradable material of the frame and the supporting pillars, there is an effect that the grass protection mat can have eco-friendliness.

In addition, according to the present invention, since the anti-recession member is provided in the form of a convex dome toward the ground, as the turf protection mat progresses, the anti-recession power and the anti-skid power in the horizontal direction of the anti-recession member are further strengthened. .

In addition, according to the present invention, since the anti-recession member is injection-molded before the frame and the support pillars during heterogeneous injection molding of the lawn protection mat, there is an effect of not having to complicate the shape of the injection mold used for the heterogeneous injection molding. Occurs.

1 is an upper perspective view of a multi-material lawn protection mat according to the present invention.
FIG. 2 is an enlarged upper perspective view of the depression preventing member shown in FIG. 1 .
3 is a lower perspective view of the depression preventing member shown in FIG.

Hereinafter, preferred embodiments of the multi-material lawn protection mat according to the present invention will be described in detail with reference to the drawings. The terms or words used below should not be construed as being limited to conventional or dictionary meanings, and on the basis of the principle that the inventor can appropriately define the concept of a term to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

The multi-material lawn protection mat 100 according to the present invention is installed in a state of being coupled to the ground of a grass growing area on which a turf has already been laid to protect the turf of the turf, and as shown in FIG. 1 , the frame (110), and the support pillars (120), and includes a depression preventing member (130).

The frame 110 provides a space for the turf to be positioned while the turf protection mat 100 is positioned upwardly away from the ground when the turf protection mat 100 is installed on the ground of the turf growing area. The shape of the frame 110 is generally rectangular as shown in FIG. 1 , but is not necessarily limited thereto.

In addition, the frame 110 also has turf passage holes 112 through which the turf turf passes. Each grass passage hole 112 may be provided in a polygonal shape, such as a square or hexagon. 1 illustrates a turf passage hole 112 in a hexagonal shape.

And some of the turf passage holes 112 are composed of the turf passage holes 112 for preventing the depression from which the depression prevention member 130 is provided. 1 shows an example in which 16 turf passage holes 112 are configured as turf passage holes 112 for anti-recession, but the number of turf passage holes 112 for anti-recession may be more or less depending on the ground condition. to be.

The support pillars 120 extend up and down from the vertices of each grass passage hole 112 . Each support post 120 slightly protrudes upward from each vertex of the grass passage hole 112, and protrudes relatively long downward. When the lawn protection mat 100 is installed, the lower ends of the support posts 120 come into contact with the ground, and thereby the frame 110 is supported by the support posts 120 while being separated upward from the ground. These support pillars 120 are integral with the frame 110 .

The depression prevention member 130 is provided only in the grass passage holes 112 for prevention of depression. And each depression prevention member 130 is integrally connected to the depression prevention member connecting sides 114 as shown in FIGS. Here, the dent-preventing member connecting sides 114 are sides surrounding the turf passage hole 112 for dent-prevention, and are a portion of the frame 110 .

In addition, each depression preventing member 130 is provided in a form that can be in surface contact with the ground. The lawn protection mat 100 is installed one by one on the ground on which the turf is laid and is connected to each other, and then is pressed toward the ground while repeatedly receiving a load by pedestrians, vehicles, etc. At this time, the depression preventing members 130 ) is in surface contact with the ground to prevent the turf protection mat 100 from sinking.

In the lawn protection mat 100 as described above, the frame 110 and the supporting pillars 120 have the same material, while the depression preventing members 130 are different from the material of the frame 110 and the supporting pillars 120 . have material.

For example, as a material of the frame 110 and the support pillars 120, EVA (Ethylene-Vinyl Acetate copolymer, ethylene vinyl acetate copolymer) having flexibility is used to adjust the lawn protection mat 100 to the curvature of the ground. As the material of the depression prevention members 130, a polypropylene-based or polyethylene-based material having greater strength than EVA is used to further improve the depression prevention function of the depression prevention members 130 compared to the prior art. can do it At this time, by using a transparent material among polypropylene-based or polyethylene-based materials, the depression prevention members 130 may transmit visible light. The design of the number, position, and shape of the prevention members 130 is much freer than that of the prior art. In addition, a biodegradable material may be used as a material of the frame 110 and the support pillars 120 . In this case, after a predetermined time elapses after the installation of the grass protection mat 100 and the grass grows sufficiently, the frame 110 and the support posts 120 occupying most of the grass protection mat 100 are naturally decomposed on the ground. , the grass protection mat 100 has eco-friendliness.

In the turf protection mat 100, each dent prevention member 130 may be integrally connected to the vertices of the turf passage holes 112 for dent prevention or the support posts 120 located at these vertices, but It is preferable to be integrally connected to the depression preventing member connecting sides 114 as described. As in the lawn protection mat 100, when the anti-recessing members 130 have a material different from that of the frame 110 and the supporting pillars 120, it is important that the firm coupling of the anti-recessing members 130 is, each When the anti-recession member 130 is integrally connected to the connecting sides 114 of the anti-recession member rather than the vertices or the support pillars 120, each anti-recession member 130 has a larger area of connection and is depressed. This is because the coupling of the prevention members 130 can be made firmly. 1 to 3, each depression prevention member ( 130), an example of strengthening the bonding force is shown.

The anti-recession members 130 do not need to be particularly limited in shape as long as they can make surface contact with the ground, but each anti-recession member 130 is positioned toward the ground (lower side) as shown in FIGS. 1 to 3 . ) is preferably provided in the form of a convex dome. When the depression prevention member 130 is provided in the form of a convex dome toward the ground, the contact area between the depression prevention member 130 and the ground increases as the depression progresses. This is because not only the force is further strengthened, but also the anti-skid force in the horizontal direction of the depression preventing member 130 can be further strengthened.

The dome-shaped depression preventing member 130 convex toward the ground may include curved surface members 132 connected to two opposite depression preventing member connection sides 114. In this case, the curved surface members 132 are different from each other. It is connected to the collapsing prevention member connecting side 114, and forms an integral part at the mutual intersection point. For example, as shown in FIG. 2, if there are six connecting sides 114 of the anti-recession member, a pair of connecting sides 114 of the anti-recession member 114, the other pair of the three curved members 132 are opposite to each other. Each of the anti-collapse member connecting side 114 and the other pair of collapsing preventing member connecting side 114 are connected to each other, and form an integral part at the central portion that intersects with each other. And each curved member 132 is provided in a convex shape toward the ground.

As shown in FIGS. 2 and 3, each of the curved members 132 has a width W that is smaller than the length of the dent-preventing member connecting side 114, so that the light transmitting space 142 between the curved members 132 is shown. ) is formed, and another light transmitting space 144, 146 can be formed by forming two portions separated from each other and extending in parallel. It is a suitable form when it does not have

And, although not shown, each curved member 130 has a width W that is almost the same as the length of the dent prevention member connecting side 114, so that the light transmitting space 142 is hardly formed, and the above two parts are one It is provided in a connected form and may not form the above light transmitting spaces 144 and 146 , but these curved members 130 are in a form that can be used when the depression preventing member 130 has a visible light transmitting function.

On the other hand, the above grass protection mat 100, which differs from the material of the frame 110 and the support pillars 120 and the material of the depression prevention members 130, is a heterogeneous injection molding such as insert injection molding, double injection molding, etc. can be manufactured.

When insert injection molding is used, the plurality of depression prevention members 130 are first molded through the primary injection molding, and then separated from the primary injection mold used for the primary injection molding, and the depression formed by the primary injection molding. Secondary injection molding is performed for molding the frame 110 and the support pillars 120 in a state in which the prevention members 130 are inserted into the secondary injection mold. And the depression prevention members 130 are formed integrally with the depression prevention member connecting sides 114 in the process of performing the secondary injection molding.

In insert injection molding, a method of molding the frame 110 and the support pillars 120 by primary injection molding and molding the depression preventing members 130 by secondary injection molding may be considered. However, in this case, a cavity for molding the frame 110 and the supporting pillars 120 must be provided in the primary injection mold, and the frame 110 and the supporting pillars 120 are also inserted in the secondary injection mold. There is a disadvantage that the form of both the primary and secondary injection molds is complicated because a place must be prepared for it. Therefore, it is advantageous to mold the frame 110 and the support pillars 120 by secondary injection molding after molding the depression prevention members 130 by primary injection molding as shown above.

When double injection molding is used, first, the depression prevention members 130 are molded in a state in which the movable plate (core part) and the fixed plate (cavity part) of the injection mold are in contact. After that, the movable plate is rotated 180 degrees while the depression preventing members 130 remain on the movable plate, and then injection molding is performed again in a state where the movable plate is in contact with the fixed plate again, then one area of the movable plate and the fixed plate. In , the anti-collapse members 130 are newly formed, and in another area, the frame 110 and the support pillars 120 are formed, and the already formed anti-recessing members 130 are formed with the connecting sides 114 of the anti-recessing member. become one

Even during double injection molding, it is preferable to mold the frame 110 and the support pillars 120 after molding the depression preventing members 130 in order to exclude the disadvantages as described above.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. It goes without saying that various modifications and variations can be made within the equivalent scope of the claims to be described, and the above-described embodiments can be variously combined.

100: grass protection mat of various materials 110: frame
112: grass through hole 114: collapsing prevention member connection side
120: support column 130: depression prevention member
132: curved member 142, 144, 146: light transmitting space

Claims (6)

a frame positioned upwardly away from the turf ground and having turf passage holes;
Supporting pillars formed integrally with the frame to extend up and down from the vertices of each grass passage hole and placed on the ground; and
As for preventing depression through surface contact with the ground, it is provided only in some of the grass passage holes for preventing depression, and is provided with a material different from the material of the frame and the support pillars, for each depression prevention Containing; includes a;
The anti-recession member is provided with a material having a higher strength than that of the frame, and has a dome shape convex toward the ground. The method of claim 1,
The anti-recession member is a grass protection mat made of a material that transmits visible light. delete delete 3. The method of claim 1 or 2,
The frame and the supporting pillars are multi-material grass protection mats made of biodegradable materials. According to claim 1,
A multi-material lawn protection mat manufactured by heterogeneous injection molding in which the depression prevention member is molded before the frame and the supporting pillars.

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