KR100898547B1 - Grass protection mat - Google Patents

Abstract

There is provided a lawn protection mat that can be used for lawn protection in a golf course, lawn field, park lawn, or the like.

The grass protection mat, the body portion formed in succession of the grass passing space, the lug formed on the lower portion of the body portion, and provided in connection with the body portion or the lug prevention means configured to prevent the ground of the mat and the lug or It is characterized in that it comprises a mat rolling prevention means provided in the depression preventing means.

According to the present invention, after the construction of the grass protection mat effectively prevents the mat from sinking in the ground to maximize the grass growth and protection effect, at the same time to suppress the grass protection mat is pushed from the ground, especially after the construction of the grass protection mat Alternatively, an improved effect of minimizing the generation of flow of the grass protection mat by the moving object (person) through the mat and ultimately solidifying the maintenance of the grass protection mat can be obtained.

Golf course, lawn field, lawn, grass protection mat, grass growth mat

Description

Grass protection mat {GRASS PROTECTION MAT}

1 is a plan view showing the overall configuration of a lawn protection mat according to the present invention

2 is a side view of FIG. 1

3 is a view showing the first depression preventing means of the grass protection mat of the present invention,

(a) is a perspective view of main parts of 'A' of FIG.

(b) is a plan view of FIG. 3a

4 is a view showing the second depression preventing means of the lawn protection mat of the present invention,

(a) is a perspective view

(b) is a plan view of FIG. 4a

(c) is a plan view showing another modification of FIG. 4A

Figure 5 is a perspective view showing a third depression preventing means of the grass protection mat of the present invention

6A to 6I illustrate various forms of the first to third depression preventing means of the present invention shown in FIGS. 1 to 5 and the rolling preventing means provided in the modification.

Figure 7 is a perspective view of the fourth depression preventing means and the rolling prevention means of the grass protection mat of the present invention

8 is a view illustrating a fifth recession preventing means of the grass protection mat of the present invention.

(a) is a perspective view

(b) is a bottom view of the jungle prevention means;

(c) is a bottom view of another anti-rolling means;

9 is a view illustrating a sixth depression preventing means of the lawn protection mat of the present invention,

(a) is a perspective view

(b) is a perspective view showing a rolling prevention means

(c) is a perspective view showing another jungle preventing means

10 is a view showing an elastic part provided on the lug fastening bar included in the depression preventing means of the grass protection mat of the present invention.

(a) is a perspective view

(b) is an operating state diagram

Explanation of symbols on the main parts of the drawings

1 .... lawn protection mat 10 .... body part

12 .... Grass Passage 20 .... Rugs

30 .... protruding pillar 40 .... buffer wing

50 .... Outer Frame 60 .... Hook

70 .... Fasteners

100,110,120,130,140,150 .... Prevention measures

160 ... elastic part

200a, 200b, 210,220,230 .... Jungle Prevention Means

The present invention relates to a grass protection mat that can be used for grass protection in a golf course, grass field, park grass field, etc., or can also be used for grass growth. More specifically, the mat is recessed from the ground after construction of the grass protection mat. It effectively prevents maximizing grass growth and protection effect, while also suppressing the grass protection mat from being pushed off the ground, thereby minimizing the occurrence of flow of the grass protection mat after the construction of the grass protection mat or by moving objects (persons) through the mat. Ultimately, it relates to a grass protection mat that solidifies the maintenance of the grass protection mat.

In the grass growing areas such as golf courses, lawn fields, and lawns of parks, lawns in the main road areas where mainly aisle parts and vehicles, for example, carts in golf courses, are constantly pressed and damaged. Renovation of the turf will require significant costs.

Therefore, a grass protection mat for preventing the damage of the grass while buffering the load even if a person or vehicle passes in order to prevent the lawn damage, especially in the copper moving area in which such people or vehicles move.

Such a known conventional grass protection mat is disclosed in, for example, Utility Model Registration No. 20-0354896 filed by the applicant of the present invention.

For example, although not shown in a separate drawing, the conventional grass protection mat is largely the body portion constituting the skeleton of the mat, the lugs supported on the ground, the projection pillar supporting the load and the cushioning wings for dispersing and cushioning the load, and the mat It includes the outer frame part to keep the outer frame of the base.

In addition, the outer frame portion has hooks that enable connection construction of the mats and openings to which hooks of adjacent mats are fastened are formed at predetermined intervals on opposite sides along the outer frame portion.

Therefore, the lugs and the protruding pillars support the loads applied by the person or the vehicle passing the mat, and the shock absorbing blades distribute the loads to prevent damage to the grass that grows as a whole.

On the other hand, the registration utility model has been disclosed to prevent the depression of the mat.

For example, after a grass protection mat is laid on the ground, the grass grows and covers the sand for grass protection, or the mat is easily recessed on the ground as the ground softens by moisture during the rainy season, or the mat is constantly If a moving object such as a person or a cart (golf course) is stepped on and passed through, the mat is pressed down (while being pressed) and it is recessed in the ground.

However, such depression of the grass protection mat makes it difficult to protect the grass normally and continuously, or because the mat can not normally protect the grass grown by sinking into the ground, the applicant of the present invention in the above-mentioned utility model This proposed prevents various types of sink prevention measures.

On the other hand, the applicant of the present invention proposes a lawn protection mat of the present invention by improving the structure of various types of depression prevention means, in particular, the improved lawn protection mat of the present invention to further implement the mat anti-roll function Was done.

The present invention has been proposed in order to solve the various problems as described above, the object of the aspect is to effectively prevent the mat from sinking in the ground after the construction of the grass protection mat to maximize the grass growth and protection effect, in particular grass A grass protection mat that prevents the protection mat from being pushed off the ground to minimize the occurrence of flow of the grass protection mat after the construction of the grass protection mat or by a moving object (person) through the mat, ultimately strengthening the maintenance of the grass protection mat. To provide.

As a technical aspect for achieving the above object, the present invention, the grass passing space is successively formed body portion;

A lug formed below the body portion;

Depression prevention means provided in connection with the body portion or lug to prevent ground depression of the mat; And,

Mat rolling prevention means provided in the lug or the depression preventing means;

It provides a grass protection mat configured to include.

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

First, Figure 1 and Figure 2 shows the overall configuration of the grass protection mat 1 of the present invention, the body portion 10 in the grass protection mat of the present invention is preferably multi-faceted to improve grass growth or stickiness The body 10 is integrally connected to form a hexagonal or circular turf through space 12 to form a skeleton of the overall mat.

By the way, in the grass protection mat (1) of the present invention, the body parts 10 are connected to each other to form a grass in a hexagonal shape, which can make the grass passing space wider than a normal square mat in the case of a hexagon, By making the photosynthesis action of the grass more smooth, the growth and sticking of the grass after the mat construction is more smooth. Therefore, such a hexagonal body part 10 is most preferable, and without forming a gap between the body parts. To maintain optimum strength.

However, the hexagonal body portion in the present invention is not limited to this example only, and may be formed in other forms of square and octagonal circles as necessary.

Next, FIGS. 1 and 2 show the lugs 20 of the lawn protection mat 1 of the present invention, where the lugs 20 of the present invention are hexagonal body parts at the bottom of the body part 10. It is formed perpendicular to its vertex and enables the ground support of the mat and maintains the body part spaced from the ground at the beginning of grass growth.

In addition, the protrusion pillar 30 is also formed vertically upward on the vertex of the hexagonal body portion, such a protrusion pillar 30 receives a moving body load such as a person passing through the mat.

Next, as shown in Figures 1 and 2, the buffer blade 40 of the present invention grass protection mat 1, for example, the load dispersion buffer blade 40, the projection pillar 30 of the body portion 110. The vertically formed between), such as the buffer blades 40 of the present invention is formed so that its height is longer than the protrusion pillar 30 as shown in Figure 2 than the protrusion pillar 30 to distribute the load first It is desirable to.

That is, when a person or a cart of a golf course passes on the grass protection mat, first the contact with the buffer blades 40 having the longest height and the largest number of installations, wherein the buffer blades 40 are bent to press the grass Since the load is dispersed and buffered and then supported by the protruding pillar 30, the turf is protected by the mat.

In addition, the outer frame portion 50 which maintains the outer frame of the mat extends in a quadrangular shape to the outside of the body portion 110 is integrally formed.

Next, as shown in Figures 1 and 2, the outer frame portion of the grass protection mat (1) of the present invention hook means 60 and hook means of the adjacent mat to enable the mat connection construction on the basis of the diagonal ( 60 is provided with a fastening opening 70 is fixedly coupled.

At this time, the hook means 60 of the present invention has a cutout not indicated by a separate code to facilitate the connection construction of the mat while being elastically fastened to the fastening opening 70.

3 to 10 will be described with respect to the depression preventing means and the rolling prevention means which is a substantial characteristic constituent means in the grass protection mat (1) of the present invention. However, in order to help the understanding below, the mat basic components, the depression preventing means, and the anti-rolling means will be described with reference numerals of 10,100,200 units, respectively.

First, FIG. 3 shows the depression preventing means 100 of the first embodiment provided in the lawn protection mat 1 of the present invention.

For example, as shown in Figure 3, the first depression preventing means 100 of the present invention is both ends (as viewed from above), for example across the grass turf 12 of the hexagon formed by the body portion (10) It is configured to connect to different lugs, for example facing lugs 20, to prevent ground mating of the mat.

That is, as shown in Figures 3a and 3b, both ends of the first depression preventing means 100 of the present invention is connected between the bottom of the plurality of lugs 20 facing each other across the grass passage space 12 The predetermined width of the bars are integrated.

On the other hand, the bar connected between the lugs, which are the first depression preventing means 100 of the present invention, one end thereof is integrally formed at the bottom of the six lugs 20 arranged at the vertices of the hexagon in accordance with the hexagonal grass passing space. The other ends of the bars are connected to each other in the center of the grass passing space 12 to form a central portion 102.

Accordingly, the bars of the first depression preventing means 100 of the present invention are connected to the lug at one end (actually integrally formed), and the other end is integrally joined at the center of the grass passing space 12 to form the central portion 102. Since it is formed, it is a structure that is firmly connected between the lugs, and prevents the floor from sinking after the mat is installed on the ground.

Meanwhile, as shown in FIG. 1, the first recess preventing means 100 of the present invention may be appropriately arranged in the body parts 10 forming the grass passing space 12 of the entire mat.

In this case, although the bar is shown in the cross-sectional rectangular shape, it is also possible to form a rhombus shape to reinforce the strength.

On the other hand, as shown by the arrow in Fig. 3a, the depression preventing means 100 is integrally connected between the lower end of the lugs 20 facing each other across the grass passing space, in particular provided as the anti-rolling means It may be provided as a curved bar such as a cross-section curved (semi-spherical) bar or cross-sectional triangle (not shown) forming the inner space portion 100a.

Therefore, the other type of the first depression preventing means 100 of the curved or bent bar, such that the inner space portion (100a) is in contact with the ground because the elastic operation to be expanded when the mat is pressed, preventing depression Of course, the inner space portion can be provided at the same time to prevent the rolling of the mat into the ground.

On the other hand, although not shown in the drawings, it is preferable that the upper surface of the bar (square in cross-section) of the first sinking prevention means 100 is treated to be rounded, which removes the bar edge surface and the grass grown at the bar edge is damaged. It is to prevent being.

Next, FIGS. 4A to 4C show the depression preventing means 110 of the second embodiment of the lawn protection mat 1 according to the present invention.

That is, the second depression preventing means 110 of the present invention is connected to the connection portion 112 and the connection portion 112 made of a bar connected to the body portion 10 or the lug 20 of the mat, the grass passing space It is characterized in that it is arranged to prevent ground depressions of the mat, including an extension such as a ring 114 or plate 116, which is arranged in and enlarges the surface contact area.

Thus, the connection 112 and the ring 114 (FIG. 4B) or the plate 116 (FIG. 4C) work together to prevent the mat from sinking in the ground.

For example, in the second depression preventing means 110 of the present invention, since the connection portion 112 corresponding to the bar of the first depression prevention means 100 and the ring 114 or the plate 116 of the expansion portion are in close contact with the ground, The ground contact area will be increased to more effectively prevent the mat's depression.

4B and 4C, the ring 114 or the plate 116 of the second depression preventing means 110 of the present invention is shown in a circular shape, but a hexagonal shape such as a grass passing space by a polygonal shape, for example, a body part. Of course, it is also possible to form.

On the other hand, the ring 114 connected to the connecting portion 112 connected to the lug 20 in the second depression preventing means 110 of the present invention does not block the grass passing space 12 significantly, and facilitates grass growth, and the plate 116 will block some of the turf passing space 12 but will most certainly increase the ground contact area, thus reliably preventing ground depressions of the mat.

Therefore, it may be preferable to use the depression preventing means including the plate 116 of the extension portion of the second depression prevention means 110 in the area where the ground depression of the mat easily occurs according to the state of the ground.

At this time, although not shown in a separate drawing, in the case of the second depression preventing means 110 of the present invention, since the ring 114 or the plate 116, which is a substantially extended portion, provides a depression preventing function, Unlike the drawing, 112 may be bent and extended from the body 10 to be connected to the ring 114 or the plate 116.

4A and 4B, the connection part 112 and the ring 114 may be provided as a bar having a rectangular cross section or a rhombus shape in cross section.

Or, as shown by the arrow in Fig. 4a, in the second depression prevention means 110 of the present invention, the connection portion 112 and the ring 114, etc., the inner space portion 114a (connection portion provided as a rolling prevention means) Unsymboled) and may be provided as a curved (hemi-spherical) curved or triangular shaped bar.

In the case of being provided as such a curved or bent bar, the inner space portion 114a contacts the ground and thus is elastically expanded when it is pressed to prevent depression, as well as the inner space portion penetrates into the ground to prevent the mat from being pushed. It can provide the function to prevent them at the same time.

Meanwhile, although the ring 114 and the plate 116 are formed in a circular shape in FIG. 4, the ring 114 and the plate 116 may be formed in a polygon such as hexagon.

At this time, although not shown in a separate drawing, in the case of the second depression preventing means 110 of the present invention, as well as the connecting portion 112, the ring 114 or the plate 116 of the expansion portion is the ground contact area is increased Since the mat provides a depression preventing function, the connecting portion 112 is bent downwardly from the body portion 10 instead of the lug 20 to be in contact with the ground on the bottom of the lug in the ring 94 or plate ( 96 may be connected.

Next, FIG. 5 shows a third depression preventing means 120 provided in the lawn protection mat 1 of the present invention.

That is, as shown in Figure 5, the third depression preventing means 120 of the present invention is configured in the form of a bar integrally connected between the lower end of the adjacent lug 20 along the grass passage space 12. It is characterized by being.

Therefore, the third depression preventing means 120 of the present invention is formed across the turf passage space because it is integrated between the lower ends of the adjacent lugs 20 along the body portion without crossing the turf passage space 12. The first and second depression preventing means 100, 110 will be easier to manufacture than.

However, in the case of the third depression preventing means, it may be desirable to increase the number of installations rather than the first and second depression preventing means.

At this time, although not shown in Figure 5, the depression preventing means 120 is integrally connected between the lower end of the adjacent lug 20 along the body portion 10, as shown by the arrows in Figures 3a and 4a. While it may be provided as a curved or bent bar in the cross-section including an inner space provided to the anti-roll means.

Next, FIGS. 6A to 6I illustrate various forms 200a to 240 of the rolling prevention means provided on the bar provided in the first to third recession preventing means 100, 110 and 120 of the present invention. Doing.

That is, the anti-rolling means of the present invention is the ground contact surface of the first -3 depression preventing means of the present invention shown in Figures 3 to 5, for example, the bottom of the bar of the first depression preventing means 100, the second depression prevention The bottom of the connecting portion 112 of the means 110 and the bottom of the ring 114 or plate 116 of the expansion portion, the bottom of the bar of the third depression preventing means 120 is provided, the mat after the installation of the grass protection mat, Shows several forms of the rolling prevention means (200a to 240) to prevent the push from.

In this case, as described above, in the case of the curved or bent bar having the inner space portion, there will be no need for a separate push preventing means.

For example, the rolling preventing means of the present invention, as shown in Figures 6a and 6b, may be a groove elongated along the bar or ring, for example, v-shaped groove (200a) or circular groove (200b). have.

And, the rolling prevention means of the present invention, as shown in Figure 6c and 6b, may be a conical protrusion 210 formed integrally on the bottom of the bar or ring.

Alternatively, the rolling prevention means of the present invention, as shown in Figures 6e to 6f, the uneven portion 220, protrusions 230, for example cross-shaped protrusions or polygons provided integrally on the ground contact surface that is the bottom of the bar or ring It may be a groove 240.

Of course, several of these types of anti-rolling means may be provided in combination in a single bar or ring.

Next, as shown in Figures 6h and 6i, the anti-rolling means of the present invention is at least one of the conical projection 210 or plate formed integrally with the plate 116 of the extension of the second depression preventing means An extended groove 200a (or 200b) provided above may be provided.

At this time, the plate in the second depression preventing means 110 of the present invention may be provided with a concave-convex portion 220, a protrusion 230 (cross-shaped protrusion) or a polygonal groove 240, as shown in Figures 6e to 6g.

Meanwhile, although not shown in a separate drawing, the grooves 200a and 200b of the rolling prevention means may be integrally formed at the bottom of the lug 20 to which the depression preventing means (bar) is integrally connected.

That is, the V-shaped groove 200a or the conical protrusions 210 as shown in FIG. 6A may be formed at the bottom of the lug, which will further prevent the lugs from being pushed off the ground.

Next, Fig. 7 shows the depression preventing means 130 of the fourth embodiment provided in the lawn protection mat 1 of the present invention.

That is, as shown in FIG. 7, the fourth depression preventing means 130 of the present invention may be provided as a depression prevention plate integrally provided at the lower portion of the lug 20, for example, a circular or elliptical plate (not shown). Can be.

The fourth depression preventing means 130 of the depression preventing plate is in close contact with the ground when the grass protection mat is installed on the ground to prevent the depression of the mat.

And, such as the bottom of the depression preventing plate of the fourth depression preventing means 130 of the present invention or the elliptical plate, for example, the ground contact surface, such as v-shaped groove (200a) or conical projections (210) It may be provided.

Next, FIG. 8A shows the depression preventing means 140 of the fifth embodiment provided in the lawn protection mat 1 of the present invention.

That is, as shown in Figure 8a, the fifth depression preventing means 140 of the present invention, of the circular or oval plate provided under the connecting plate 142 is integrated between the adjacent lugs 20 along the body portion The depression prevention plate 144 is configured.

Accordingly, the fifth depression preventing means 140 of the present invention is provided with a depression prevention plate 144 under the connecting plate as shown in Figure 8a to prevent the ground depression of the mat.

In addition, the depression preventing plate 144 and the connection plate 142 of the fifth depression preventing means are connected and fixed by the reinforcing rib 146 to prevent the depression preventing means from being bent at the ground during the construction of the mat and the structure is firm. do.

At this time, as shown in Figures 8b and 8c, the bottom of the elliptical depression prevention plate 144 of the fifth depression prevention means 140 of the present invention, that is, the surface contact surface extending elongated along the plate 200a or A rolling prevention means such as a pointed conical protrusion 210 may be provided.

Of course, as shown in Figures 6e to 6f not shown, it can be provided with a concave-convex portion 220, a protrusion 230 (cross-shaped protrusion) or a polygonal groove 240.

Next, FIGS. 9A to 9C show the depression preventing means 150 of the sixth embodiment provided in the lawn protection mat 1 of the present invention.

That is, as shown in FIG. 9A, the sixth depression preventing means 150 of the present invention is adjacent to the body portion of the first and third depression prevention means 100 and 120 shown in FIGS. 3 and 5. It is characterized by providing a lug fastening type that allows the bars connected between the lugs 20 to the bottom or between the lugs 20 facing each other across the grass passage space 12.

For example, as shown in FIGS. 9B and 9C, the lug fastening type depression preventing means 150, which is the sixth depression preventing means of the present invention, may be integrally formed between the fastening ends 154 fitted to the lugs ( 152).

Therefore, the lug fastening type depression preventing means 150 is characterized in that it can be easily assembled and used at the desired position of the mat.

At this time, the fastening end 154 is fitted to the lug 20 in a ring shape, but its inner diameter is adjusted so that it does not rise too much from the lug.

And, the lug 20 of the mat is in the form of increasing the outer diameter to go up from the bottom to maintain the actual strength.

Next, as shown in FIGS. 9B and 9C, the grooves elongated along the bar on the bottom surface of the bar 152, that is, the ground contact surface, which are integrated between the fastening ends in the sixth depression preventing means 150 of the present invention. A rolling prevention means such as 200a or conical protrusion 210 may be provided.

Of course, as shown in Figures 6e to 6f not shown, it can be provided with a concave-convex portion 220, a protrusion 230 (cross-shaped protrusion) or a polygonal groove 240.

At this time, the bars 152 between the fastening ends 154 may be provided as hemispherical or triangular bars curved or bent in cross section having an inner space, although not shown in a separate drawing.

Next, in FIGS. 10A and 10B, the first, second, third and sixth recession preventing means of the type including at least a bar among the various recession preventing means of the present invention described above are provided at the same time to press the mat and press the mat. An elastic portion 160 is shown to prevent.

At this time, the elastic portion 160 includes a groove portion 162 is elongated along the bar but recessed inward.

Therefore, as shown in Figure 10b, when the lawn protection mat (1) of the present invention is actually installed on the ground, the elastic portion 160 provided in the lower portion of the bar of the depression prevention means is opened by the groove portion 162, the ground contact The area is increased to effectively prevent the depression of the mat, and in particular, the elastic portion 160 having the groove portion 162 also provides the function of the mat rolling prevention step described above.

At this time, the inner groove portion of the elastic portion 160 may be provided with conical protrusions 164 to add the anti-roll function.

Accordingly, the various types of depression preventing means provided in the grass protection mat of the present invention described above and the rolling prevention means provided in the lug or the depression preventing means effectively prevent the depression on the ground after the construction of the grass protection mat to grow the grass. It is possible to secure the space, and at the same time to prevent the phenomenon after the mat construction by the rolling prevention means provided on the surface contact surface of the depression preventing means which is in close contact with the ground.

Thus, according to the lawn protection mat of the present invention, it is possible to prevent the ground depression of the lawn protection mat by various preferred depression prevention means.

Thus, the lawn protection mat of the present invention provides an excellent effect of prolonging the mat service life by further prolonging the period in which the depression is prevented to protect the grass.

Next, the flow due to mat rolling is suppressed by the improved anti-dentation means or the anti-rolling means provided in the lug.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (22)

A body portion 10 in which the grass passing space 12 is successively formed; A lug 20 formed below the body part 10; Depression prevention means provided in connection with the body portion 10 or the lug 20 and configured to prevent ground depression of the mat; And, Mat rolling prevention means provided in the lug or the depression preventing means; Lawn protection mat consisting of. The method of claim 1, wherein the body portion 10 is configured to form a grass passage space 12 of polygonal or circular shape, the projection pillar 30 formed on the upper side of the body portion, and a buffer wing (protruding therebetween) 40) and a grass protection mat further comprises an outer frame portion 50 connected to the outer portion of the body portion to maintain the mat shape. The grass protection mat according to claim 2, wherein the outer frame portion (50) further comprises a fastener (70) to which the hook means (60) and the adjacent mat hook means for connecting the mats are connected. The grass protection mat according to claim 1, wherein the depression preventing means (100) comprises a bar integrally connected between the lower ends of the lugs (20) facing each other across the grass passage space. The inner space part 100a of claim 1, wherein the depression preventing means 100 is integrally connected between the lower ends of the lugs 20 facing each other across the turf passing space, and provided as the anti-rolling means. Lawn protection mat, characterized in that formed in the cross-section curved or bent bar to form a. The grass protection mat according to claim 4 or 5, wherein the depression preventing means (100) has one end connected to the lugs and the other end joined together in the grass passing space to form an integral central portion (102). . According to claim 1, wherein the depression preventing means 110, Connection portion 112 connected to the body portion 10 or the lug 20; And, An expansion part connected to the connection part and disposed in the grass passing space and expanding a ground contact area; Lawn protection mat consisting of. The method of claim 7, wherein the expansion of the depression preventing means 110, characterized in that configured to include a ring 114 or plate 116 connected to the connecting portion 112 and disposed in the grass passing space 12 Grass protection mat. 9. The lawn protection mat according to claim 8, wherein the connection portion 112 and the ring 114 of the depression preventing means are composed of a bar or a bar that is curved or bent in cross section including an inner space provided as a barrier preventing means. . 9. The lawn protection mat according to claim 8, wherein the ring restraint or plate (116) of the depression preventing means extension is formed in a circle or a polygon. The grass protection mat according to claim 1, wherein the depression preventing means (120) comprises a bar integrally connected between the lower ends of adjacent lugs (20) along the body portion (10). The method of claim 1, wherein the depression preventing means 120 is composed of a cross-section curved or bent bar which is integrally connected between the lower ends of the adjacent lugs 20 along the body portion and forms an inner space portion provided as the anti-rolling means. Lawn protection mat, characterized in that. The grass protection mat according to claim 1, wherein the depression preventing means (130) comprises a depression prevention plate provided at a lower end of the lug (20). The method of claim 1, wherein the depression preventing means 140, characterized in that consisting of the connection plate 142 connected between the adjacent lugs along the body portion and the depression prevention plate 144 provided in the lower portion of the connection plate. Grass protection mat. 15. The lawn protection mat according to claim 14, wherein the depression preventing plate and the connecting plate of the depression preventing means are further connected and fixed by a reinforcing rib (146). The grass protection method of claim 1, wherein the depression preventing means (150) comprises a lug fastening type that is detachably fastened between adjacent lugs or lugs facing each other across the grass passage space along the body part. mat. The grass protection mat according to claim 16, wherein the lug fastening preventing means (150) is composed of bars (152) which are integrated between fastening ends (154) fitted to the lugs. 17. The method of claim 16, wherein the lug fastening type depression preventing means 150 is a cross-section curved or bent bar including an inner space portion which is integrated between the fastening end 154 to be fitted to the lug and provided as an anti-rolling means Lawn protection mat, characterized in that consisting of. According to any one of claims 1, 4, 8, 11, 13, 14 and 17, wherein the rolling prevention means provided in the depression preventing means, Grass, characterized in that one of the elongated grooves 200a, 200b, protrusions 210, uneven parts 220, protrusions 230, polygonal grooves 240 or a mixture thereof are provided on the ground contact surface of the means Protective mat. The anti-rolling means according to any one of claims 1, 4, 5, 7, 11, and 12, wherein the anti-rolling means is provided in the lug to which the anti-depressive means is connected. Lawn protection mat, characterized in that consisting of a groove (200a) (200b) or the projection (210) provided in the lug integral with the means. 18. The method of claim 4, 9, 11 and 17, wherein the ground contact surface of the depression preventing means further comprises an elastic portion 160 to prevent mat depression and rolling. Grass protection mat. 22. The grass protection mat according to claim 21, wherein the elastic portion includes a groove portion (162) extending along the bar and recessed inwardly, and the groove portion (162) has protrusions (164).

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