JP6647718B2 - Sheet retainer - Google Patents

Description

  The present invention relates to a sheet retainer that fixes a sheet such as a grass sheet laid on the ground to the ground and can be coupled to the sheet.

  Conventionally, as one of means for preventing weeds from growing on the ground, laying a weed prevention sheet can be cited. Further, when laying the grass sheet, a holding tool for holding the grass sheet against the ground is required.

  As a conventional holding tool, there is a holding tool including a disk-shaped washer having two holes formed on a surface thereof and a U-shaped anchor (see Patent Document 1). Specifically, an operator places the washer on a portion of the grass sheet that the user wants to fix to the ground, and inserts the anchor into two holes of the washer. Thus, the anchor penetrates the weed prevention sheet and is inserted into the ground, and the area of the weed prevention sheet covered by the washer is maintained in a state in which it is in close contact with the ground. As a result, the grass sheet becomes less likely to peel off from the ground, and the ground is maintained in a state covered by the grass sheet.

  However, in the U-shaped anchor, since a pair of bar-shaped portions are parallel to each other, when a force is applied to the washer to push the washer upward from below, the anchor moves upward together with the washer, and the anchor moves to the ground. There is a risk of falling off. As a solution to such a problem, a sheet holding washer that can stably maintain a state where the ground is covered with a grass sheet by preventing an anchor inserted into the ground from easily coming off from the ground. It is described in Patent Document 2.

  The washer for sheet pressing described in Patent Document 2 is laid on the ground, in which at least two through holes for inserting an anchor formed by bending a bar member made of mild steel into a substantially U-shape are formed in a flat plate member. A washer for holding a sheet placed on a sheet, wherein two through holes extend in the thickness direction from the surface of the flat plate member, and further extend obliquely from a predetermined portion in the thickness direction to reach the back surface. Things.

JP-A-3-126449 JP 2015-21480 A

  In a washer as described in Patent Documents 1 and 2, for example, when frost is present, a force for pushing upward is exerted. The washer also pushes upwards due to strong winds. In this case, if the washer comes off the sheet, the washer may be lost.

  An object of the present invention is to provide a sheet pressing device that solves such a problem and prevents the sheet pressing device from coming off the sheet.

  In order to achieve the above object, the present invention has the following configuration.

(1) A sheet presser according to the present invention is a sheet presser combined with a sheet laid on the ground,
A curved plate-shaped member, provided on the back surface of the plate-shaped member, comprising a sheet coupling portion coupled to the sheet,
The sheet coupling portion, a pointed part penetrating the sheet, a support part connected to the plate-shaped member, connected to the support part and the pointed part, an outer periphery of a lower end of the support part and the A sheet insertion portion having an outer periphery smaller than the outer periphery of the root of the cusp, wherein a cross section of the sheet insertion portion and the cusp is an arrow ,
The gap between the root of the cusp of the sheet coupling portion and the lower end of the support portion is set to be 10 mm or less, exceeding the thickness of the sheet,
A sheet presser provided with a step at a boundary between the support section and the sheet insertion section and a boundary between the sheet insertion section and the pointed head .

(2) In the sheet presser described in (1), a lower end of the plate-shaped member is located on an outer periphery of the plate-shaped member, and a lower end of the plate-shaped member and a root of the pointed head of the sheet coupling portion. Can be approximately the same height.

( 3 ) In the sheet press according to ( 1 ), a lower end of the plate-shaped member is located on an outer periphery of the plate-shaped member, and a lower end of the plate-shaped member is a root of the pointed head of the sheet coupling portion. And a lower end of the supporting portion.

( 4 ) In the sheet press according to any one of (1) to ( 3 ), the cusp may be a cone.

( 5 ) In the sheet press according to ( 4 ), a side surface of the cone may have a plurality of blades perpendicular to the side surface.

( 6 ) In the sheet presser according to any one of (1) to ( 5 ), the plate-shaped member has at least two concave portions or through holes into which an anchor bent in a substantially U shape is inserted. Is also good.

  ADVANTAGE OF THE INVENTION According to this invention, a sheet | seat and a sheet presser are couple | bonded, and it becomes possible to prevent a sheet | seat presser from detaching from a sheet.

It is a perspective view showing appearance of a sheet presser in one embodiment of the present invention. It is an explanatory view showing appearance of a sheet presser in one embodiment of the present invention. It is explanatory drawing which shows the positional relationship of the sheet presser of this embodiment of this invention, and a sheet | seat. It is explanatory drawing which shows the usage method of the sheet presser of this embodiment of this invention. It is explanatory drawing which shows the state which fixed the grass sheet to the ground using the sheet | seat holding tool and the anchor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an appearance of a sheet presser according to an embodiment of the present invention. 2A and 2B are explanatory views showing the appearance of the sheet presser 1 according to one embodiment of the present invention. FIG. 2A is a top view showing the front (upper) side, and FIG. 2) is a cross-sectional view taken along line AA, and FIG. 2C is a bottom view showing the back (lower) side.

The sheet presser 1 includes a curved disk portion 10 corresponding to a plate-like member, and a sheet coupling portion 25 provided on the lower surface (back surface) side of the disk portion 10.
On the surface (upper surface) of the disk portion 10, there are provided concave portions 21a and 21b forming two through holes, a concave portion 22, and straight grooves 23a and 23b.

As shown in FIG. 2B, the recesses 21a and 21b are recesses extending obliquely outward from the upper opening. Since the concave portions 21a and 21b extend obliquely outwardly, when the U-shaped anchor is driven into the concave portions 21a and 21b with a hammer or the like, the U-shaped anchor penetrates the bottom surfaces of the concave portions 21a and 21b. The pair of rod-shaped portions of the anchor extend in a “C” shape. This will be described later with reference to FIG.
The concave portion 22 is provided in order to configure the support portion 25c shown in FIG. 2 (b) by a hollow U-shaped hollow base, and is provided when the support portion 25c is formed by a column other than the hollow base. It is not necessary.
The straight grooves 23a and 23b serve as guides into which the "U" -shaped bent portion enters when the anchor is formed into a "U" shape, and may not be provided when the anchor is formed into a "U" shape. Good.

The disk portion 10 is a plate-shaped member made of a hard resin or metal, but the material is not particularly limited as long as weather resistance and strength can be secured. Although the size of the disk portion 10 is not particularly limited, it has a diameter of 80 mm here.
As shown in FIG. 2A, the concave portion 22 is provided at the center of the disk portion 10 on the surface side of the disk portion 10, and the concave portions 21a and 21b are arranged so as to sandwich the center. . When the disk portion 10 is viewed from above, the concave portion 22 and the two concave portions 21a and 21b are arranged on the same straight line passing through the center of the disk portion 10. The interval between the concave portions 21a and 21b is not particularly limited. Here, the interval between the centers of the upper openings of the concave portions 21a and 21b is set to 44 mm.

On the back (lower surface) side of the disk portion 10, there are provided trapezoidal protrusions 24a and 24b, linear protrusions 26a and 26b, and a hollow cylindrical sheet coupling portion 25.
The sheet coupling section 25 includes a pointed head 25a, a sheet insertion section 25b, and a support section 25c. The outer periphery of the sheet insertion portion 25b is smaller than the root of the pointed head 25a and the outer periphery of the lower end of the support portion 25c. A part of the cross section including the cusp 25a of the sheet joining portion 25 (here, the cross section of the cusp 25a and the sheet insertion portion 25b) has an arrow shape.
Since a part of the cross section including the pointed head 25a of the sheet coupling part 25 has an arrow shape, when the pointed head 25a penetrates the weedproof sheet 100, the weedproof sheet 100 enters the sheet insertion part 25b, The sheet connecting portion 25 is connected. The support portion 25c regulates the movable range of the grass sheet 100, but need not be provided.
The protruding portions 24a and 24b are provided to form the concave portions 21a and 21b. When the U-shaped anchor is driven into the recesses 21a, 21b, a pair of rod-shaped portions of the U-shaped anchor, which protrude from the bottom surfaces of the recesses 21a, 21b and penetrate the upper surfaces of the portions 24a, 24b, have a "C" shape. Extend.
The linear protrusions 26a and 26b are provided to form the linear grooves 23a and 23b. If the straight grooves 23a and 23b are not provided, they need not be provided.

The lower end of the disk portion 10 and the position of the root of the cusp 25a of the sheet joining portion 25 are arranged at the same height. Here, the same height does not mean that they are completely the same, and the lower end of the disc portion 10 may be higher or lower than the root position of the cusp 25a of the sheet connecting portion 25 within a predetermined range. Good. Normally, in consideration of the thickness of the grass sheet 100, the lower end of the disk portion 10 is set to be higher than the root position of the cusp 25a of the sheet joining portion 25 only in the thickness portion of the grass sheet 100. Is preferred.
If the lower end of the disc portion 10 is too lower than the base of the cusp 25a of the sheet joining portion 25, the grass sheet 100 will float from the ground inside the disc portion 10, and the lower end of the disc portion 10 If the height of the cusp 25a of the sheet connecting portion 25 is too high, the cusp 25a enters the ground, and it is difficult to regulate the movable range of the sheet at the root of the cusp 25a.

  When the support portion 25c is provided, the lower end of the disk portion 10 has a height between the base of the pointed head 25a of the sheet connecting portion 25 and the lower end of the support portion 25c (within the interval d in FIG. 3B). It is desirable to be located in. When the support portion 25c is provided, the grass sheet 100 can be sandwiched between the base of the cusp 25a of the sheet joining portion 25 and the lower end of the support portion 25c. Can be more regulated. It is desirable that the distance d exceeds the thickness of the grass sheet 100 and is set to 10 mm or less. The predetermined range is desirably set to this range regardless of the presence or absence of the support portion 25c.

The pointed head 25a is configured by attaching four blades 25a-2 to a side surface of a cone 25a-1. The shape of the cusp 25a is not limited to such a shape, and may be a pyramid such as a cone without a wing, a triangular pyramid, or a quadrangular pyramid. In the present application, these shapes are referred to as cones. The tip of the cone may have a rounded corner (R). The shape of the pointed head 25a may be any shape as long as the sheet can be penetrated, and may be, for example, a shell shape, a three-dimensional shape in which a plurality of triangular blades are combined so that the cross section is radial such as a cross, or the like.
The pointed head 25a penetrates the grass sheet 100, and the pointed head 25a protrudes to the back of the grass sheet 100, and the grass sheet 100 enters the sheet insertion portion 25b. Thus, the grass sheet 100 enters the sheet insertion portion 25b between the pointed head 25a and the support portion 25c, and is joined to the sheet presser 1.
By providing the pointed head 25a, the sheet connecting portion 25 can penetrate the sheet. And since the grass-proof sheet 100 and the sheet presser 1 are combined, the sheet presser 1 does not come off from the grass-proof sheet 100.

  The sheet press 1 is used together with an anchor 50 as shown in FIG. The anchor 50 is obtained by bending a cylindrical rod-shaped member made of mild steel into a substantially U-shape, and includes a central bent portion 50a and rod-shaped portions 50b, 50b extending linearly from both sides of the bent portion 50a. . The rod portions 50b, 50b are parallel to each other.

  The thickness of the anchor 50 is smaller (for example, 4 mm) than the opening on the upper surface of the concave portions 21a and 21b. Further, according to the present embodiment, the interval between the rod portions 50b, 50b is set to 44 mm. Therefore, both ends of the anchor 50 can be simultaneously inserted into the openings on the upper surface side of the recesses 21a and 21b.

Next, a method of using the sheet press 1 of the present embodiment will be described. FIG. 4 is an explanatory diagram showing a method of using the sheet presser 1 of the embodiment of the present invention.
First, as shown in FIG. 1, the worker places the sheet presser 1 on a grass sheet 100 laid on the ground with the surface thereof facing upward, and presses the sheet presser 1. Then, as shown in FIG. 3A, the sheet connecting portion 25 of the sheet presser 1 penetrates the weed prevention sheet 100, and the sheet presser 1 and the weed prevention sheet 100 are connected. Further, since the sheet connecting portion 25 of the sheet presser 1 enters the ground, it also has a function of fixing the grass sheet 100.

Next, as shown in FIG. 4A, the worker inserts both ends of the anchor 50 into the openings of the recesses 21a, 21a. At this time, both ends of the anchor 50 bend along the inclined concave portions 21a, 21a. Then, the anchor 50 is driven in using a hammer or the like. When the anchor 50 is driven, as shown in FIG. 4B, the rod-shaped portions 50b, 50b penetrate through the bottom surfaces of the recesses 21a, 21b and are sent out obliquely in the shape of "C". Thus, as shown in FIG. 4C, the rod-shaped portions 50b, 50b are inserted obliquely with respect to the ground. Then, the rod-shaped portions 50b, 50b are inserted into the ground until the bent portion 50a of the anchor 50 reaches the sheet presser 1.
By the above operation, the grass sheet 100 is fixed to the ground by the sheet presser 1 and the anchor 50.

  Then, by fixing a plurality of portions of the weed prevention sheet 100 to the ground using the sheet presser 1 and the anchor 50, the fixing work of the weed prevention sheet 100 is completed as shown in FIG.

  According to the present embodiment configured as described above, the grass holding sheet 100 and the sheet presser 1 are connected to each other by the sheet connecting portion 25, so that, for example, when there is frost, the sheet presser 1 , The sheet presser 1 receives the force of pulling back by the combined grass-proof sheet 100. Further, since the sheet presser 1 is connected to the grass sheet 100, it does not come off from the grass sheet 100. Further, since the sheet connecting portion 25 of the sheet presser 1 enters the ground, the grass sheet 100 can be fixed.

  The sheet holder 1 is placed on the grass sheet 100, and the anchor 50 is inserted into the recesses 21a and 21b from the surface of the sheet holder 1 so that the anchor 50 bends when passing through the recesses 21a and 21b. By driving the anchor 50, the anchor 50 extends obliquely from the back surface of the sheet holder 1. For this reason, the anchor 50 that has penetrated the grass sheet 100 is inserted obliquely with respect to the ground. Accordingly, when a force that pushes up from below is applied to the sheet presser 1, resistance when the anchor 50 attempts to move upward increases, and the anchor 50 and the sheet presser 1 move upward. Since it is difficult to move, it is possible to stably maintain a state in which the ground is covered with the grass sheet 100.

The embodiment of the present invention has been described above, but the embodiment according to the present invention is not limited to the above-described embodiment.
For example, the shapes of the recesses 21a and 21b are not particularly limited, and when a U-shaped anchor is used as shown in FIG. The shapes of the recesses 21a and 21b may be configured to form the through holes described in FIGS. 5 and 6 of Patent Document 2.
In addition. Here, the through holes are formed by driving the anchors with a hammer or the like to penetrate the bottom surfaces of the recesses 21a and 21b through the anchors. However, the through holes are formed without the bottom surfaces of the recesses 21a and 21b. You may comprise a sheet presser.

Further, according to the above-described embodiment, the number of the concave portions is two, but may be more. Further, according to the above-described embodiment, an example in which the substantially U-shaped anchor 50 is inserted has been described. For example, two anchors having upper ends formed in a hook shape are inserted into the two concave portions 21a and 21b, respectively. May be.
In the above-described embodiment, the sheet fixed with the sheet presser has been described as an example of the grass sheet, but the sheet is not particularly limited to the grass sheet, and may be, for example, a leisure sheet.
Further, although the curved disk portion 10 is used as the plate member, a flat disk may be used. The shape of the plate member is not limited to a circle, but may be another shape, for example, a polygon including a square, an ellipse, or the like.

DESCRIPTION OF SYMBOLS 1 Sheet presser 10 Disk part 21a, 21b recessed part 22 recessed part 23a, 23b Straight groove 24a, 24b Projection part 25 Sheet coupling part 26a, 26b Linear projection part 50 Anchor 50a Bending part 50b Rod part 100 Weedproof sheet

Claims (6)

A sheet retainer coupled to a sheet laid on the ground,
A curved plate-shaped member, provided on the back surface of the plate-shaped member, comprising a sheet coupling portion coupled to the sheet,
The sheet coupling portion, a pointed part penetrating the sheet, a support part connected to the plate-shaped member, connected to the support part and the pointed part, an outer periphery of a lower end of the support part and the A sheet insertion portion having an outer periphery smaller than the outer periphery of the root of the cusp, and a cross section of the sheet insertion portion and the cusp is an arrow;
The distance between the root of the cusp of the sheet coupling portion and the lower end of the support portion is set to be 10 mm or less, exceeding the thickness of the sheet ,
A sheet press, wherein a step is provided at a boundary between the support section and the sheet insertion section and at a boundary between the sheet insertion section and the pointed head . The lower end of the plate-like member is in the periphery of the plate-like member,
The sheet presser according to claim 1, wherein a lower end of the plate-shaped member and a base of the pointed head of the sheet connecting portion are substantially the same height. The lower end of the plate-like member is in the periphery of the plate-like member,
The sheet presser according to claim 1, wherein a lower end of the plate-shaped member is located at a height between a root of the cusp of the sheet coupling portion and a lower end of the support portion.   4. The sheet press according to claim 1, wherein the cusp is a cone. 5.   The sheet presser according to claim 4, wherein the side surface of the cone has a plurality of blades perpendicular to the side surface.   The sheet presser according to any one of claims 1 to 5, wherein the plate-shaped member has at least two concave portions or through holes into which an anchor bent in a substantially U shape is inserted.

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