JP2847644B2 - Weed control mat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weed control mat that covers the surrounding ground surface of, for example, a telephone pole, a road sign, a guardrail, a pole of a streetlight, and the like, to prevent the growth of weeds and the like.

[0002]

2. Description of the Related Art As this kind of weed control mat, Japanese Patent Publication Sho 56
There is one described in Japanese Patent Publication No. -20402. FIG. 10 is a perspective view showing the appearance. In this conventional grass-proof mat, a protruding shape 1a serving as both a non-slip and a reinforcement is formed at the center of a horizontally long plate-like body having a predetermined width, and connecting pins 2 are provided at front and rear edges.
Cover unit 1 with pin holes 1b for inserting
Is fixedly connected to the periphery of the pillar 3 or the like of the road shoulder sign and the ground surface of the inclined portion connected to the periphery using the pin 2 and the pin hole 1b.

[0003]

However, since the above-mentioned grass-proof mat has a structure in which a plurality of covers 1 are connected to each other by using the pins 2, the connecting work thereof is complicated. It takes a long time to lay
There are many parts.

In order to cover the periphery of the column 3, a cover unit 4 having a flat U-shaped notch 4 a corresponding to the outer diameter of the column 3 is prepared separately from the cover unit 1. Must be disposed on the left and right of the column 3.

In order to cope with columns having different outer diameters, a plurality of types of covers 4 are prepared in which the inner diameter of the notch 4a is adjusted to the columns, or the notch 4a is processed on site. Will be. Furthermore, the cover unit 1,
4 is formed in a thin plate-like body, and a part thereof is laid on top of each other. Therefore, the stability on the ground surface is extremely poor, and in order to prevent the cover from being turned by wind or the like, the cover unit 1, 4 Has to be fixed with a pin 2 or the like at a plurality of locations one by one. Also, since a gap is created at the place where the covers 1 and 4 overlap,
Weeds and the like can be bred through the gaps, and the stability is impaired due to the invasion of wind and rain.

According to the present invention, stable laying on the ground can be easily performed, and even when the ground surface is inclined or there is unevenness, the laying can be laid closely along the ground surface.
It is an object of the present invention to provide a grass-proof mat which can easily cope with a column having a different outer diameter.

[0007]

The weed control mat of the present invention comprises:
A large number of small blocks 6 are arranged on the back surface of the flexible mat base 5 provided with the column through-holes 7 while maintaining a required interval from each other.
The notch 8 is formed over the periphery of. Furthermore, a pair of small blocks 6, arranged on both sides of the cut 8
6, a joint fitting portion 10 for fitting the joint piece 9 is formed.

The above-mentioned small block 6 is preferably formed by molding innumerable recycled rubber chips, and may be formed in an inverted truncated pyramid shape and arranged in a matrix. Further, it is preferable that the small blocks arranged side by side on the periphery of the mat substrate are formed as inclined surfaces whose upper surfaces decrease in height toward the periphery. It is preferable that the above-mentioned column penetrating portion 7 is formed such that the cutting guide grooves 7a to 7f are formed concentrically.
Further, as the mat substrate 5, it is preferable that the rubber layers 5b, 5b are formed on the front and back surfaces of the substrate 5a. The joint piece 9 has fitting projections 9a formed at both ends of the upper surface of the horizontally long plate-like body. The joining fitting portion 10 includes a groove capable of fitting the end of the joint piece 9 and a fitting projection. 9a
Is preferably formed with a fitting concave portion 10a into which the wire is fitted.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. 1 is a plan view of a weed control mat as one embodiment, FIG. 2 is a front view thereof, FIG. 3 is an enlarged view of a portion surrounded by an encircling line indicated by I in FIG. 1, and FIG. II-I
It is an expanded sectional view which follows an I line.

As shown in FIGS. 1 to 3, this weed control mat A has, for example, a large number of small blocks 6 held at a required distance from each other over the entire back surface of a flexible mat substrate 5 having a rectangular shape. They are arranged in a matrix. The mat base 5 has a pillar penetrating portion 7 formed at the center thereof for penetrating a pillar P such as a road sign and the like. A notch 8 for insertion into 7 is formed.

As shown in FIG. 4, the mat substrate 5 has a weather-resistant rubber layer 5b on the front and back surfaces of a reinforcing substrate 5a such as canvas.
This is a bendable sheet formed with 5b, for example, 900 × 700 mm in length and width and 3 mm in thickness. The mat substrate 5 is not limited to a square substrate, but may be formed in a desired shape such as a polygon, a circle, an ellipse, or the like. Can be.

As shown in FIG. 3 and FIG.
A cutting guide groove formed by forming thin rubber layers 5b, 5b on the front and back along the circumference of a diameter set in consideration of the outer diameter of the pillar P which is assumed in advance so as to be in close contact with the pillar P having a different outer diameter. 7a to 7f are formed concentrically. Accordingly, by cutting off a part of the mat base 5 along the cut guide groove 7a or the like suitable for the outer diameter of the column P to be penetrated through the column penetrating portion 7, the column P and the mat substrate 5 can be always brought into close contact.

The small block 6 is formed by molding countless rubber chips (used tires or the like into chips). As shown in FIG. 4, for example, one side a of the upper end face is 48 mm and the lower end face is 48 mm. One side b is 40 mm and height t is 17 m
The small blocks 6 are arranged so that the interval c between adjacent small blocks 6 is about 5 mm.

That is, by forming each of the small blocks 6 into an inverted truncated pyramid shape and arranging them with a gap of about 5 mm, even when the mat base 5 laid on the ground surface G is bent and deformed to the back side, it is adjacent. The small blocks 6 are prevented from coming into contact with each other so as not to hinder the bending deformation of the mat base 5. Therefore, the small blocks 6 only need to have a shape and an arrangement interval that do not hinder the bending of the mat base 5.

Among the small blocks 6, the small blocks in two rows vertically and horizontally along the edge of the mat base 5 are formed as inclined surfaces whose upper surfaces decrease in height toward the edge. When the base body 5 is laid on the ground surface G, the entire periphery is gradually lowered toward the outside.
With such a structure, for example, the blade does not catch on the blade of the lawnmower, and the adhesion to the ground can be improved.

As shown in FIGS. 1 to 4, joint pieces 9 are fitted to the bottom surfaces of small blocks 6, 6 each consisting of a pair of right and left three pairs disposed on both sides of the notch 8. Are formed respectively. The joint piece 9 is in the shape of a horizontally long plate made of, for example, rubber, plastic, or the like, and has cylindrical fitting projections 9a, 9a on both ends of the upper surface thereof.
Are formed.

As shown in FIG.
The joint piece 9 is formed to have a depth substantially equal to the plate thickness, and is formed as a groove so that the ends of the joint piece 9 can be fitted respectively. Fitting recess 1 for fitting 9a
0a is provided. Reference numeral 11 denotes fixing holes provided at the four corners. Pins and the like are passed through the fixing holes 11 as necessary to fix the four corners to the ground.

An example of the manufacturing process of the weed control mat A will be described. An unvulcanized rubber sheet is put into a lower mold coated with a release agent, and a necessary number of rubber chips containing a heat-curable binder are put on the uncured rubber sheet.

The mixing ratio of the rubber chip and the binder is set to, for example, about 10: 1, and the rubber chip and the binder are mixed in advance so that the binder is sufficiently entangled with the rubber chip. In addition, a required covering plate is arranged in a portion where the column penetration portion 7 is to be formed so that the rubber chip does not adhere to this portion.

After the injected rubber chips are leveled, the rubber sheet and the rubber chips are sandwiched between the small block 6 and the upper mold having the joint fitting portion 10 recessed.
Molding is performed at a pressure of 10 to 20 kg / cm ² for about 20 minutes. After the completion of the molding, the cut 8 is formed at a predetermined position of the mat base 5 and, if necessary, deburring or the like is performed.
The numerical values shown above change according to the temperature at the time of manufacturing and the like, and are not limited to those values.

As a manufacturing method, a mat substrate is previously manufactured by pressurizing and heating with a press, and after setting this in a mold, a rubber chip mixed with a room temperature-curable binder and a curing agent is used. They can be charged and cured at normal temperature under pressure.

Next, the case where the above-mentioned weed control mat A is laid on the surrounding ground surface such as a road sign will be described. The pillar penetration part 7 is cut off along a cutout guide groove 7a or the like that matches the outer diameter of the pillar P such as a road sign to form a pillar penetration hole.

The strut P is sandwiched between the cuts 8 and the grass-proof mat A is moved so that the strut through hole approaches the strut P, and the strut P is fitted into the strut through hole. Thus, the grass-proofing mat A is spread around the support P and around the support P, and the inner edge of the support through hole is in close contact with the support P.

As shown in FIG. 4, the joint piece 9
Are divided into three sets of small blocks 6, 6 arranged along the cut 8
The notches 8 are joined by fitting into the fitting grooves 10, 10. Thereby, as shown in FIG. 7, the weed control mat A can be laid in close contact with the ground surface G.

The weed control mat A thus laid is
Due to the weight of the small block 6, the mat base 5 is
And the small blocks 6 sink into the ground surface G. Thereby, as shown in FIG. 8 and FIG. 9, a part of the ground surface G is an inclined surface as shown by Ga and Gb. The grass-proof mat A can be closely laid along them.

Further, the weight of the blocks 6 arranged on the entire back surface of the mat base 5 is equally applied to the entire mat base 5, and the small blocks 6 are embedded in the ground surface G. Therefore, it is not always necessary to perform fixing by a pin or the like, which is conventionally required.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention. The above-mentioned cut may be formed in any direction, for example, from the column penetration portion to the four corners of the mat base.

[0028]

According to the invention described in claims 1 to 7,
The following effects can be obtained. The work can be performed easily and in a short time because it can be laid only by being fitted into the support through portion through the cut of the support.

Since the small blocks are arranged at intervals on the back surface of the mat substrate, the weight can be equally applied to the entire mat substrate, and each small block can be embedded in the ground surface. It can be closely laid according to the undulation of the ground surface. In addition, since it is not easily turned up by wind or the like, the stability at the time of laying can be improved. Therefore, it is not always necessary to fix with a pin or the like as in the related art.

When the present grass-proof mat is laid on the ground surface, each small block does not hinder the bending deformation of the mat base.
Even when the ground surface on which the weed prevention mat is laid has irregularities, or when the pillars are erected on an inclined land, the laying can be performed according to the undulation of the ground surface.

The fitted joint piece is located on the back surface of the mat base and is pressed from above by the mat base and the small block, so that the joint piece does not come off the joining fitting part. Further, since the joint piece and the joint fitting portion are covered from above with the mat base, the appearance is not impaired.

According to the second aspect of the present invention, a part of the mat base is cut out along the cut guide groove, so that a support through hole having a size adapted to the outer diameter of the support can be formed on site. Even when the outer diameters of the mats are different, no gap is formed between the support and the mat substrate, whereby the propagation of weeds and the like can be completely prevented.

According to the third aspect of the present invention, since the small blocks are made into chips of used tires and the like and recycled, the cost can be reduced, the waste can be reduced and the resources can be saved. Can be contributed to.

According to the fourth aspect of the present invention, since the mat substrate has a structure in which the rubber layers are formed on the front and back surfaces of the substrate, the strength can be improved while maintaining flexibility.

According to the fifth aspect of the invention, since the fitting projection of the joint piece is fitted into the fitting recess of the fitting portion, the cut can be firmly joined.

According to the invention described in claim 6, since the inverted pyramid-shaped truncated small blocks are arranged in a matrix, the stability to the ground can be further improved.

According to the seventh aspect of the present invention, among the small blocks, the small blocks arranged on the periphery of the mat base are formed as inclined surfaces whose upper surfaces decrease in height toward the periphery. Therefore, when the mat substrate is laid on the ground surface, all the edges gradually become lower toward the outside. Thereby, for example, it is possible to prevent the blade from being caught on the blade of the lawn mower, and to improve the adhesion to the ground.

[Brief description of the drawings]

FIG. 1 is a plan view of a weed control mat as one embodiment of the present invention.

FIG. 2 is a front view thereof.

FIG. 3 is an enlarged view of a portion surrounded by an encircling line indicated by I in FIG.

FIG. 4 is an enlarged sectional view taken along line II-II of FIG.

FIG. 5 is a plan view of a joint piece.

FIG. 6 is a front view thereof.

FIG. 7 is an explanatory view showing a state in which the weed control mat of the present invention is laid on the ground surface around a column.

FIG. 8 is an explanatory view showing a state in which the weed control mat of the present invention is laid around a column erected on a slope.

FIG. 9 is an explanatory view showing a state in which the weed control mat of the present invention is laid around a column erected on a slope.

FIG. 10 is an external perspective view of a conventional grass-proof mat.

[Explanation of symbols]

 P support G ground surface 5 mat base 5a base 5b rubber layer 6 small block 7 support penetrating part 7a-7f cutting guide groove 8 cut 9 joint piece 9a fitting protrusion 10 joining fitting part 10a fitting recess

Claims (7)

(57) [Claims] 1. A grass-proof mat covering a ground surface by penetrating a pillar for a road sign or the like into a pillar penetrating part, wherein a back surface of a flexible mat base provided with the pillar penetrating part is provided.
A large number of small blocks are arranged while maintaining a required interval from each other, a cut is formed from the support post penetration portion to the periphery of the mat base, and a pair is arranged on both sides sandwiching the cut. A weed prevention mat, wherein a joint fitting portion for fitting a joint piece is formed in the small block. 2. The weed-proofing mat according to claim 1, wherein the pillar penetrating portion is formed by forming a plurality of cutting guide grooves concentrically. 3. The weed control mat according to claim 1, wherein the small block is formed by molding a myriad of recycled rubber chips. 4. The weed control mat according to claim 1, wherein the mat substrate has a rubber layer formed on the front and back surfaces of the substrate. 5. The joint piece has fitting projections formed on upper surfaces of both ends of the horizontally long plate-like body, and the joining fitting portion has a groove capable of fitting an end of the joint piece and a fitting projection. The weed control mat according to claim 1, wherein a mating recess for fitting the mat is formed. 6. The weed control mat according to claim 1, wherein the small blocks are formed in an inverted truncated pyramid shape, and the small blocks are arranged in a matrix. 7. The small blocks arranged side by side on the mat substrate, each upper surface being formed as an inclined surface whose height decreases toward the side. 6. The weed control mat according to 6.