Belt-shaped sheet pressing fixture

Abstract

To enable a sheet-like material such as a weed-control sheet to be stably pressed and fixed to the ground. [Solution] A band-shaped sheet-like object pressing and fixing device that presses and fixes a sheet-like object 7 to the ground via a pressing pin. A pressing portion 5 is provided on the surface of a pressing plate 2 extending in the longitudinal direction, and the back surface of the pressing plate 2 abuts against the sheet-like object to press and fix the sheet-like object to the ground. The pressing pin has a pressing portion at the upper end of the pin body that presses the pressed portion 5. An insertion portion 15 through which the pin body can be inserted is provided at each of both longitudinal end portions of the pressing plate, and a plurality of insertion portions 15 are provided at a required interval in the longitudinal direction in the middle portion. When the pin body is inserted through the insertion portion 15 and inserted into the ground, the pressing portion presses the pressed portion 5 toward the ground.

Description

[Technical field]

[0001] The present invention relates to a band-shaped sheet pressing and fixing device that presses and fixes a sheet-like material, such as a weed control sheet, to the ground via a pressing pin. [Background technology]

[0002] 2. Description of the Related Art Patent Documents 1 and 2 disclose sheet fasteners that are used to press and fasten sheet-like objects such as weed control sheets to the ground.

[0003] The sheet fastener according to Patent Document 1 has circular plates with holes attached to both ends of a pressing plate that holds down the weed control sheet. Patent Document 1 does not specify the specific usage state for pressing and fixing the weed control sheet against the ground, but the overall description of Patent Document 1 can be understood as follows: That is, with the pressing plate pressed against the surface of the weed control sheet, a fixing pin inserted into the communicating holes of the overlapping circular plates is driven into the ground with a hammer, and the head of the pin is pressed against the circular plate to press and fix the weed control sheet against the ground.

[0004] However, when pressing and fixing the weed control sheet against the ground in this manner, the following problem occurs because holes are provided only in the circular plates connected to both ends of the pressing plate. That is, when the fixing pin inserted into the connecting holes is being driven into the ground, if the lower end of the fixing pin hits an obstacle such as a stone in the soil, the fixing pin may not be driven any further. This means that the weed control sheet cannot be pressed and fixed against the ground.

[0005] On the other hand, the sheet fixing device described in Patent Document 2 is equipped with a resin fastening belt having a width that enables it to be laid across the peripheral edge of the weed control sheet and the adjacent peripheral ground surface, and is configured to fasten the fastening belt to the ground on both side portions of the peripheral edge with the fastening pins.

[0006] However, although a sheet fixing device of this configuration could indirectly press the peripheral edge of the weed control sheet against the ground via the fastening strap, it was not able to directly press the peripheral edge against the ground in a stable state to fix it. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Design Registration No. 1620844 [Patent Document 2] Patent Publication No. 2021-36838 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention was developed in consideration of the above-mentioned problems in the conventional art, and has as its object to provide a band-shaped sheet-like object pressing and fixing device that can stably press and fix sheet-like objects, such as weed-control sheets, to the ground. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention employs the following means. That is, the first aspect of the belt-shaped sheet pressing and fixing device according to the present invention is a belt-shaped sheet pressing and fixing device that presses and fixes a sheet-like object against the ground via a pressing pin, and has a pressed part on the surface of a belt-shaped pressing plate extending in the longitudinal direction, and the back surface of the pressing plate abuts against the sheet-like object to press and fix the sheet-like object against the ground. The pressing pin has a pressing part that presses the pressed part at the upper end of the pin body. The pressing plate is provided with at least four insertion parts that can insert the pin body in the thickness direction of the pressing plate at required intervals in the longitudinal direction. The pin body that has inserted through the insertion parts is inserted into the ground, and the pressing part presses the pressed part toward the ground.

[0010] A second aspect of the band-like sheet pressing and fixing device of the present invention is characterized in that, in the first aspect, an insertion portion through which the pin body can be inserted is provided at each of both longitudinal end portions of the pressing plate, and a plurality of the insertion portions are provided at the longitudinal middle portion at a required interval in the longitudinal direction.

[0011] A third aspect of the band-shaped sheet material pressing and fixing device according to the present invention is characterized in that the band-shaped sheet material pressing and fixing device according to the first aspect is configured to be interconnected, the insertion portions provided at both longitudinal end portions of the pressing plates are configured as connecting holes, and when the pin body is inserted into a communicating connecting hole formed by aligning the hole centers of the connecting holes, the pressing plates are capable of rotating around the axis of the pin body.

[0012] A fourth aspect of the band-shaped sheet pressing fixture according to the present invention is configured such that the band-shaped sheet pressing fixture according to the first aspect can be connected to each other, and the pressing plate has first and second connecting pieces connected to both ends of the pressing plate body, and the first and second connecting pieces are each provided with the insertion part configured as a connecting hole, and the pressing plates are rotatable about the axis of the pin body when the pin body of the pressing pin is inserted into a connecting hole formed by matching the hole centers of the connecting holes. The pressing plate body has the same thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 the thickness of the pressing plate body. The surface of the first connecting piece is connected to the surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, and the back surface of the first connecting piece is flush with the back surface of the pressing plate body.

[0013] A fifth aspect of the band-shaped sheet pressing and fixing device according to the present invention is the fourth aspect, characterized in that the leading edge of each of the first and second connecting pieces is a semicircular arc protruding outward, and the connecting hole provided in the first and second connecting pieces is located at the center of the semicircular arc. An annular protrusion is provided on the front surface of the first connecting piece at the periphery of the connecting hole, and when the annular protrusion is fitted into the connecting hole of the second connecting piece, the outer circumferential surface of the annular protrusion abuts on the inner circumferential surface of the connecting hole, or an annular protrusion is provided on the back surface of the second connecting piece at the periphery of the connecting hole, and when the annular protrusion is fitted into the connecting hole of the first connecting piece, the outer circumferential surface of the annular protrusion abuts on the inner circumferential surface of the connecting hole. In the fitted state, the annular protrusion is rotatable around the axis of the connecting hole.

[0014] In a sixth aspect of the band-like sheet pressing fixture according to the present invention, the band-like sheet pressing fixture according to the first aspect is configured to be interconnected, and the pressing plate has first and second connecting pieces connected to both ends of the pressing plate body, the pressing plate has the same thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 the thickness of the pressing plate body. The surface of the first connecting piece is connected to the surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, and the back surface of the first connecting piece is flush with the back surface of the pressing plate body. The surface of the second connecting piece is flush with the surface of the pressing plate body, and the back surface of the second connecting piece is connected to the back surface of the pressing plate body via a step surface perpendicular to the longitudinal direction. Furthermore, with the front surface of the first connecting piece portion and the back surface of the second connecting piece portion abutting against each other, a pivot protruding from either the front surface or the back surface is inserted into a bearing hole provided on the other surface, and a slip-out prevention locking protrusion provided at the tip of the pivot engages with the outer edge of the bearing hole, thereby allowing the pressure plates to rotate about the axis of the pivot without the pivot escaping from the bearing hole.

[0015] A seventh aspect of the band-shaped sheet-like object pressing and fixing device of the present invention is characterized in that, in any of the first to sixth aspects, the insertion portion provided in the pressure plate is an insertion hole penetrating the pressure plate in its thickness direction, and / or left and right cutout portions provided in the left and right side edge portions of the pressure plate and opening at the side edges of the pressure plate.

[0016] An eighth aspect of the band-like sheet pressing fixture according to the present invention is the seventh aspect, wherein the insertion portion provided in the presser plate is an insertion hole penetrating the presser plate in the thickness direction thereof, and / or left and right notches provided in left and right opposite positions on the left and right side edge portions of the presser plate and opening at the side edges of the presser plate. The insertion hole is formed as an elliptical insertion hole that is long in the longitudinal direction of the presser plate and has an enlarged margin portion larger than the diameter of the pin body. The notch is formed as a U-shaped notch that opens at the side edges of the presser plate as an enlarged margin portion larger than the diameter of the pin body, and the front and back sides of the bottom portion of the U-shape of the U-shaped notch are configured as enlarged inclined surfaces that expand in an inclined state toward the inside of the presser plate.

[0017] A ninth aspect of the band-like sheet pressing and fixing device of the present invention is characterized in that, in any one of the first to sixth aspects, the pressing plate is provided with a continuous small hole structure portion including a honeycomb structure portion in which countless small holes are provided in succession.

[0018] A tenth aspect of the belt-shaped sheet pressing and fixing device according to the present invention is a belt-shaped sheet pressing and fixing device for pressing and fixing a sheet-like object to the ground via a pressing pin, which is connectable to each other and has a pressed part on the surface of a belt-shaped pressing plate extending in the longitudinal direction, and the back surface of the pressing plate abuts against the sheet-like object to press and fix the sheet-like object to the ground. The pressing pin has a pressing part at the upper end of the pin body for pressing the pressed part. The pressing plate has first and second connecting pieces each having a connecting hole provided at both ends of the pressing plate body, the pressing plate body has the same thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 the thickness of the pressing plate body. a surface of the first connecting piece portion is connected to a surface of the pressing plate body via a stepped surface perpendicular to the longitudinal direction, a back surface of the first connecting piece portion is flush with the back surface of the pressing plate body, a surface of the second connecting piece portion is flush with the surface of the pressing plate body, and a back surface of the second connecting piece portion is connected to a back surface of the pressing plate body via a stepped surface perpendicular to the longitudinal direction; an annular protrusion is provided on the surface of the first connecting piece portion at a periphery of the connecting hole, and when the annular protrusion is fitted into the connecting hole of the second connecting piece portion, an outer circumferential surface of the annular protrusion abuts against an inner circumferential surface of the connecting hole; or, when the annular protrusion is fitted into the connecting hole of the first connecting piece portion, an annular protrusion is provided on the back surface of the second connecting piece portion at a periphery of the connecting hole, and when the annular protrusion is fitted into the connecting hole of the first connecting piece portion, an outer circumferential surface of the annular protrusion abuts against an inner circumferential surface of the connecting hole;

[0019] In the fitted state, the annular protrusion is rotatable about the axis of the connecting hole. The presser plate body is provided with the insertion portions, which are formed as elliptical insertion holes that are long in the longitudinal direction and have an enlarged allowance portion larger than the diameter of the pin body, at a required interval in the extension direction on a center line in the longitudinal direction. U-shaped cutouts, which are provided on the left and right side edge portions of the presser plate body in a lateral opposing relationship and open at the side edges of the presser plate, and have an enlarged allowance portion larger than the diameter of the pin body of the presser pin, are provided, and the front and back sides of the bottom portion of the U-shape of the U-shaped cutouts are configured as enlarged inclined surfaces that expand in an inclined state toward the inside of the presser plate. The pressing plate body has its peripheral edge, the elliptical insertion hole and the U-shaped cutout each bordered by a border having a thickness extending across the front and back of the pressing plate body, and a center line reinforcement having a thickness extending across the front and back of the pressing plate body is provided along a longitudinal center line of the pressing plate body, the center line reinforcement comprising a connecting reinforcement portion connecting the long axis ends of the elliptical border portions of the adjacent elliptical insertion holes and an end reinforcement portion connecting the elliptical border portions located at the ends to the end of the pressing plate body. The pressing plate body is characterized in that continuous small hole structures including honeycomb structures are provided on both sides of the center line reinforcement in areas surrounded by the center line reinforcement, the peripheral edge, the elliptical border and the border of the U-shaped cutout. Effect of the Invention

[0020] When the device for pressing and fixing a strip-like sheet according to the present invention is used, a sheet such as a weed control sheet can be pressed directly against the ground, and the sheet can be pressed and fixed stably against the ground. [Brief description of the drawings]

[0021] [Figure 1] 1 is a perspective view showing a band-shaped sheet pressing and fixing device according to the present invention; [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4]FIG. 2 is a perspective view showing first and second connecting piece portions with the centers of their connecting holes aligned and shifted vertically; [Diagram 5] 10 is a cross-sectional view showing a state in which a sheet-like material is pressed and fixed to the ground via a strip-like sheet-like material pressing and fixing device using a nail-shaped pressing pin. FIG. [Figure 6] 13 is a cross-sectional view showing a state in which a sheet-like material is pressed and fixed to the ground using a U-shaped pressing pin via a band-shaped sheet-like material pressing and fixing device. FIG. [Figure 7] A cross-sectional view showing the first and second connecting piece portions with the center of their connecting holes aligned and abutted, a side view showing the first and second connecting piece portions shifted vertically, and an enlarged cross-sectional view showing the annular protrusion of the first connecting piece portion inserted into the connecting hole of the second connecting piece portion. [Figure 8] FIG. 2 is a perspective view showing a nail-shaped presser pin. [Figure 9] FIG. 2 is a perspective view showing an L-shaped nail-type pressing pin. [Figure 10] FIG. 13 is a perspective view showing a U-shaped type pressing pin. [Figure 11] 1 is a plan view showing a state in which the band-shaped sheet pressing and fixing devices according to the present invention are connected in a straight line. FIG. [Figure 12] 1 is a plan view showing a state in which the band-shaped sheet pressing and fixing device according to the present invention is connected at a required angle. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0022] 1 to 6, a band-shaped sheet material pressing and fixing device (hereinafter also referred to as pressing and fixing device) 1 according to the present invention can be interconnected, and as shown in Figs. 5 to 6, has a pressed portion 5 on a front surface 3 of a pressing plate 2 extending in a longitudinal direction F (Fig. 1), and can abut a sheet material 7 on a back surface 6 of the pressing plate 2, and presses and fixes the sheet material 7 against a ground surface 10 via a pressing pin 9. Here, the front surface is the upper surface, and the back surface is the lower surface facing the ground surface 10. The pressing pin 9 has a pressing portion 13 at an upper end 12 of a pin body 11 for pressing the pressed portion 5. The pressing plate 2 is provided with at least four insertion portions 15 at required intervals in the longitudinal direction, through which the pin body 11 can be inserted in the thickness direction of the pressing plate 2, and the pin body 11, having been inserted through the insertion portions 15, is inserted into the ground 10, causing the pressing portion 13 to press the pressed portion 5 towards the ground 10. This will be described in detail below.

[0023] 1 to 4 and 7, the presser plate 2 is formed by connecting first and second connecting pieces 19, 20, each having a connecting hole (one of the insertion parts 15) 17, connected to both ends of a presser plate body 16, and has a band-like shape, and in this embodiment, is integrally molded entirely from a flexible resin (e.g., polyethylene). The presser plate body 16 has the same thickness over its entire length, and the thickness of the first and second connecting pieces 19, 20 is set to 1 / 2 the thickness of the presser plate body 16.

[0024] The surface 21 of the first connecting piece portion 19 is connected to the surface 22 of the pressure plate main body 16 via a stepped surface 26 (having a step equivalent to 1 / 2 the thickness of the pressure plate main body) perpendicular to the longitudinal direction F, and the back surface 23 of the first connecting piece portion 19 is flush with the back surface 25 of the pressure plate main body 16.

[0025] In addition, the surface 27 of the second connecting piece portion 20 is flush with the surface 22 of the pressure plate main body 16, and the back surface 30 of the second connecting piece portion 20 is connected to the back surface 25 of the pressure plate main body 16 via a stepped surface 29 (having a step equivalent to 1 / 2 the thickness of the pressure plate main body 16) perpendicular to the longitudinal direction F.

[0026] The leading edges of the first and second connecting pieces 19, 20 are semicircular as shown in Figures 1 to 3, and as shown in Figure 3, linear edges 33, 33 extending in the longitudinal direction F are connected to both ends 32, 32 of the semicircular edge 31. The center 35 of the connecting hole 17 approximately coincides with the center of the semicircular edge 31.

[0027] 1, 4 and 7, an annular protrusion 37 is provided on the surface 21 of the first connecting piece 19 at the periphery of the connecting hole 17 (referred to as connecting hole 17a), and when the annular protrusion 37 is fitted into the connecting hole 17 (referred to as connecting hole 17b) of the second connecting piece 20, an outer peripheral surface 39 of the annular protrusion 37 abuts against an inner peripheral surface 40 of the connecting hole 17b as shown in Fig. 7(C), and in this fitted state, the annular protrusion 37 is rotatable around the axis of the connecting hole 17b (can rotate in forward and reverse directions around the axis). As a result, when the pin body 11 is inserted into the communicating connecting hole 41 as shown in Fig. 7(A), the pressing plates 2, 2 are rotatable around the axis of the pin body 11 (Fig. 7(A)).

[0028] In this embodiment, as described above, the leading edges of the first and second connecting piece portions 19, 20 are semicircular, the straight edges 33, 33 are connected to the semicircular edge 31 (Figure 3), and the step surfaces 26, 29 are provided (Figure 4, etc.), so that the rotation in the forward and reverse directions is performed within a rotation range (an angle range of 180 degrees) in which the straight edges 33, 33 abut against the step surfaces 26, 29.

[0029] 1 to 3, the pressing plate body 16 is provided with the insertion portions 15 formed as elliptical insertion holes 45 (configured as insertion holes 44) that are long in the longitudinal direction F and have an enlarged margin portion larger than the diameter of the pin body 11, at required intervals on a center line 42 (FIG. 3) in the longitudinal direction F. In this embodiment, the insertion portions 15 as the elliptical insertion holes 45 are arranged such that the center-to-center distance between adjacent elliptical insertion holes 45, 45 is about 50 mm, and the distance between the centers of the elliptical insertion holes 45a, 45a arranged at the ends and the step surfaces 26, 29 is about 32 mm.

[0030] Also, U-shaped notches 49, 49 having an enlarged margin larger than the diameter of the pin body 11, 11 of the presser pin 9 are provided in the left and right opposing side edge portions 46, 46 of the presser plate body 16 in a left-right opposing state as the insertion portion 44, and the front and back sides of the bottom portion 50 of the U-shape of the U-shaped notches 49, 49 are configured as enlarged inclined surfaces 53 that expand in an inclined state toward the inside of the presser plate 2 (FIGS. 3 and 6). In this embodiment, as shown in FIG. 2, a set 55 of a pair of the U-shaped notches 49, 49 facing left and right is provided in the center between the adjacent elliptical insertion holes 45, 45 (FIG. 2) and is provided in an end portion 56 of the presser plate body 16 (FIG. 2).

[0031] 2, the peripheral edge 57 (FIG. 3) of the presser plate body 16 (interrupted by the U-shaped cutout 49), the elliptical insertion hole 45, and the U-shaped cutout 49 are each bordered by a border 59 having a thickness extending across the front and back of the presser plate body 16, and a center line reinforcement 60 having a thickness extending across the front and back of the presser plate body 16 is provided along the center line 42 (FIG. 3) in the longitudinal direction of the presser plate body 16. The center line reinforcement 60, as shown in FIG. 3, is made up of a connecting reinforcement 63 connecting the long axis ends 62, 62 of the elliptical borders 61 of the adjacent elliptical insertion holes 45, 45, and an end reinforcement 66 connecting the elliptical border 61a located at the end to an end 65 of the presser plate body 16. A continuous small hole structure 69 is provided in a portion surrounded by the center line reinforcement 60, the peripheral edge 57 (the edging 59), the elliptical edging 61, and the edging 67 (the edging 59) of the U-shaped cutout 49. The continuous small hole structure 69 is configured as a honeycomb structure 69a in this embodiment. These edging portions and the center line reinforcement 60, together with the honeycomb structure 69a, contribute to improving the strength of the pressing plate body 16, and in particular the elliptical edging 61 and the edging 67 of the U-shaped cutout 49 contribute to improving the strength of the pressed portion 5.

[0032] To further exemplify the dimensions of the main parts of the pressing plate 2, in Fig. 2, the entire length of the pressing plate 2 is set to about 430 mm. Also, the distance between the centers of the connecting holes 17, 17 at both ends is set to, for example, about 400 mm, the thickness is set to about 4 mm, the protruding length of the first and second connecting pieces 19, 20 is set to about 35 mm, and the thickness is set to about 2 mm. The outer diameter of the annular protrusion 37 is about 9 mm, the amount of protrusion is about 2 mm, the inner diameter of the annular protrusion 37 (the diameter of one connecting hole 17a (Figure 1)) is about 7 mm, the diameter of the other connecting hole 17b (Figure 1) is about 9 mm, the length of the major axis of the elliptical insertion hole 45 is about 8 mm, the length of its minor axis is about 7 mm, the width of the U-shaped cutout 49 is about 5 mm, and its depth is about 6 mm, the width of the elliptical edging portion 61 is about 3 mm, the width of the edging portion 67 of the U-shaped cutout is about 3.5 mm on average, and the width of the center line reinforcement portion 60 is about 3 mm.

[0033] As described above, the pressure pin 9 has the pressing portion 13 at the upper end of the pin body 11 which presses the pressed portion 5, and there are two types of pressure pins 9: a nail-shaped type and a U-shaped type.

[0034] The nail-shaped presser pin 9a, for example, as shown in Fig. 8, is formed by providing a circular plate-like pressing part 13 of 10 to 12 mm diameter at the upper end of a pin body 11 that is 150 to 200 mm long and has a tapered tip of 5 mm diameter, and is shaped like a nail. The nail-shaped presser pin 9a also includes a pin body 11 whose upper end is bent horizontally into an L-shape, and the bent part serves as the pressing part 13, as shown in Fig. 9.

[0035] As shown in FIG. 10, the U-shaped pressure pin 9b is formed by connecting the upper ends of a pair of left and right pin bodies 11, 11, which are 200 mm long and have a diameter of 3.2 mm and a tapered tip, with the upper ends connected by a horizontal connecting piece 70 (the pressing portion 13) which is 30 mm long, giving the pin an overall U-shape.

[0036] The following describes how to use the pressing and fixing device 1 having such a configuration, taking as an example a case in which the edge portion of a weed control sheet 7a laid on the ground is pressed and fixed continuously against the ground in its extension direction.

[0037] 7(A) and 11 show the state in which the pressing fixture 1, which is in an interconnected state by fitting the annular protrusion 37 into the connecting hole 17b, is placed on the upper surface 72 of the linear edge portion 71 of the weed control sheet 7a. In this state, the pin body 11 of the nail-shaped pressing pin 9a is inserted into the communicating connecting hole 41 (FIG. 7(C)), as shown in FIG. 7(A). Then, the pressing portion 13 at the upper end of the pin body 11 is struck downward with a hammer to drive the pin body 11 into the ground, and the pressing portion 13 is pressed against the pressed portion 5 on the surface of the pressing plate 2 (the surface of the first connecting piece portion 19).

[0038] Furthermore, the pin body 11 of the nail-shaped presser pin 9a is inserted into a required one of the elliptical insertion holes 45 arranged in parallel in the presser plate body 16, for example the centrally located elliptical insertion hole 45a (Fig. 5). Thereafter, the pressing portion 13 at the upper end of the pin body 11 is struck downward with a hammer to drive the pin body 11 into the ground 10, and the pressing portion 13 is pressed against the pressed portion (the surface of the elliptical edging portion 61 (Fig. 3) of the elliptical insertion hole 45) 5 on the surface of the presser plate 2. As a result, the linear edge portion 71 of the weed control sheet 7a is pressed and fixed against the ground 10, as shown in Fig. 11.

[0039] The pin body is driven in in this manner, and at the end of the driving, the pressed portion 5 is strongly pressed by the pressing portion 13. As a result, the impact of the impact may cause cracks in the pressed portion 5 of the pressing plate body 16 or its surrounding portion. However, in the pressing fixture 1 according to this embodiment, as described above, the honeycomb structure portion 69a is provided on both sides of the center line reinforcement portion 60 (FIGS. 2-3), so that cracks generated in the pressed portion 5 or its surrounding honeycomb structure portion 69a due to the impact of the impact can be stopped at some side of the honeycomb structure portion 69a and further propagation of the cracks can be prevented, and therefore the crack damage to the pressing plate body 16 due to the impact of the impact can be suppressed to a certain range.

[0040] Figure 12 shows the case where the weed-control sheet 7a is laid on the ground 10 in a location where there are obstacles such as an erect utility pole, a rock, or a protruding structure, or at an edge portion of the weed-control sheet that is bent at a right angle, and the bent edge portion 71 of the weed-control sheet 7a is pressed and fixed to the ground with the pressing and fixing device 1.

[0041] The state shown by solid lines in Fig. 12 shows an example of a state in which the pressing fixture 1 in an interconnected state is rotated about the axis of the connecting hole 17 to be in a required bent state and this is placed on the upper surface 72 of the bent edge portion 71 of the weed control sheet 7a, with the interconnected pressing fixture 1 bent at 90 degrees. Also, the interconnected state shown by dashed dotted lines in Fig. 12 shows a state in which the pressing fixture 1 in an interconnected state bent at an angle other than a right angle (for example, an internal angle of 120 degrees) is placed on the upper surface 72 of the bent edge portion 71 of the weed control sheet.

[0042] In this manner, the pressing fixture 1 is placed on the upper surface 72 of the edge portion 71 of the weed-control sheet 7a, and the edge portion 71 is fixed to the ground 10 via the pressing pin 9. During this fixing, even if the ground 10 is uneven, the pressing plate 2 elastically deforms appropriately to curve and easily follow the unevenness. In particular, in this embodiment, as shown in Figs. 1 and 2, the U-shaped cutouts 49, 49 are provided in the left and right opposing side edge portions 46, 46 of the pressing plate body 16 in a left-right opposing state, so that the pressing plate body 16 is more easily curved and deformed. Meanwhile, a center line reinforcing portion 60 having a thickness extending from the front to the back of the pressing plate body 16 is provided along the center line 42 (Fig. 3) in the longitudinal direction F of the pressing plate body 16, so that the center line reinforcing portion 60 exerts a certain reinforcing effect against the curving deformation.

[0043] Since the center line reinforcement portion 60 is thus arranged along the center line 42 in the longitudinal direction F, it also contributes to mitigating the impact shock and, if a crack occurs on one side of the center line reinforcement portion 60 (either the left or right side), it also contributes to preventing the crack from propagating to the other side.

[0044] The weed-control sheet 7a is fixed to the ground 10 by using the nail-shaped pressing pin 9a, as shown in Figure 5, by inserting the pin body 11 into the elliptical insertion hole 45 as described above, and then striking the pressing portion 13 of the pin body 11 downward with a hammer to drive the pin body 11 into the ground 10, and pressing the pressed portion 5 of the pressing plate body 16 with the pressing portion 13, thereby fixing the weed-control sheet 7a in a pressed state against the ground 10.

[0045] However, when the pin body 11 is driven in, the lower end of the pin body 11 may hit an obstacle such as a stone in the ground, making it impossible to drive the pin body 11 in any further.

[0046] When this happens, pull out the pin 11, select another elliptical insertion hole (e.g., the one indicated by reference symbol 45B in FIG. 2) away from the elliptical insertion hole (e.g., the one indicated by reference symbol 45A in FIG. 2), and apply pressure to the pin 11 in the same manner as above. This makes it easier to drive the pin 11 into the ground 10 normally.

[0047] In this embodiment, the insertion portion 15 arranged on the center line 42 (Fig. 3) in the longitudinal direction F of the pressure plate body 16 is formed as the elliptical insertion hole 45 which is long in the longitudinal direction and has an enlarged margin portion larger than the diameter of the pin body 11 of the pressure pin 9. Therefore, when the lower end of the pin body 11 hits an obstacle such as a stone in the ground, the pin body 11 may be tilted as required within the margin of the enlarged margin portion, as shown by the dashed line in Fig. 5, and driven into the ground 10 as it is.

[0048] If the pin body 11 is forcibly driven into the ground 10 without the enlarged margin, the pin body 11 may be forcibly driven into the ground 10 at an angle, which may result in the pressure plate 2 being twisted and deformed, making it impossible to reliably press and fix the edge portion 71. In addition, the pressure plate 2 may be deteriorated due to such twisting deformation.

[0049] 6 shows another embodiment in which the sheet-like object 7 is pressed and fixed to the ground via the pressing fixture 1. In this embodiment, the U-shaped pressing pin 9b is used instead of inserting the nail-shaped pressing pin 9a into the elliptical insertion hole 45. In this case, the left and right pin bodies 11, 11 are inserted into the U-shaped cutouts 49, 49 provided in a left-right opposed state on the left and right opposed side edge portions of the pressing plate main body 16, and the left and right pin bodies 11, 11 are driven into the ground 10 on the edge portion 71 by hitting the horizontal connecting piece 70 (the pressing portion 13) downward with a hammer.

[0050] In this case, too, when driving the pin body 11, the lower end of the pin body 11 may hit a stone in the ground, making it impossible to drive the pin body 11 any further. In that case, the left and right pin bodies 11, 11 are temporarily pulled out, another U-shaped notch away from the U-shaped notches 49, 49 is selected, and the horizontal connecting piece 70 (the pressing portion 13) is pressed in the same manner as above. This makes it easier to drive the left and right pin bodies 11, 11 into the ground 10 normally.

[0051] In this embodiment, the U-shaped cutouts 49, 49 have an enlarged margin portion larger than the diameter of the pin body 11 of the presser pin 9, and the front and back sides of the bottom part 50 of the U-shaped cutouts 49, 49 are configured as the enlarged inclined surfaces 53, 53 (Figs. 3 and 6) which expand in an inclined state toward the inside of the presser plate 2. Therefore, when the lower end of the pin body 11 hits a stone in the ground, if the U-shaped presser pin 9b is tilted as required within the margin of the enlarged margin portion and by utilizing the inclination of the enlarged inclined surface 53, the pin body 11 may be driven directly into the ground.

[0052] If the pin bodies 11, 11 were forcibly driven in without the expansion margin, the pin bodies 11, 11 would be forcibly driven into the ground 10 at an angle, which could result in the pressure plate 2 being twisted and deformed, making it impossible to reliably press and fix the edge portion 71. In addition, such twisting deformation could cause the pressure plate 2 to deteriorate.

[0053] In the above, the pin body 11 of the nail-shaped pressing pin 9a is inserted into the communicating connection hole 41 (Figs. 7(A)(C)), but there are cases where the lower end of the pin body 11 hits an obstacle such as a stone in the ground and it cannot be driven any further. In this case, the pin body 11 is pulled out. In this state, the pin body 11 is not driven into the communicating connection hole 41, but if the pin body 11 is driven into the elliptical insertion hole 45 or the U-shaped cutout portion 49, the sheet-like material 7 will be pressed and fixed by the pressing fixture 1.

[0054] The pin body 11 of the nail-shaped pressure pin 9a is intended to be inserted into the communicating connection hole 41, but instead of the nail-shaped pressure pin 9a, the pin body 11 of the U-shaped pressure pin 9b can also be driven into the communicating connection hole 41. EXAMPLES

[0055] The present invention is by no means limited to the above-mentioned embodiment, and it goes without saying that various design modifications are possible within the scope of the claims. Examples thereof are as follows.

[0056] (1) In the above embodiment, an annular protrusion 37 is protruded from the surface 21 of the first connecting piece portion 19 at the peripheral portion of the connecting hole 17a, and when the annular protrusion 37 is fitted into the connecting hole 17b of the second connecting piece portion 20, the outer peripheral surface 39 of the annular protrusion 37 abuts against the inner peripheral surface 40 of the connecting hole 17b. In this fitted state, the annular protrusion 37 is configured to be rotatable around the axis of the connecting hole 17b. Conversely, a ring-shaped protrusion 37 may be protruded from the back surface 30 of the second connecting piece portion 20 at the peripheral portion of the connecting hole 17b, and when the ring-shaped protrusion 37 is fitted into the connecting hole 17a of the first connecting piece portion 19, the outer peripheral surface 39 of the ring-shaped protrusion 37 abuts against the inner peripheral surface of the connecting hole 17a, and in this fitted state, the ring-shaped protrusion 37 may be configured to be rotatable around the axis of the connecting hole 17a.

[0057] (2) The annular projection 37 may be omitted.

[0058] (3) When the annular protrusion (one of the pivots described later) 37 is provided on the periphery of the connecting hole 17a or the connecting hole 17b, a claw-shaped or other anti-slip engaging protrusion may be provided at the tip of the annular protrusion 37, and the anti-slip engaging protrusion may be configured to engage with the outer edge of the connecting hole when the annular protrusion 37 is fitted into the connecting hole 17b of the second connecting piece 20 or when the annular protrusion 37 is fitted into the connecting hole 17a of the first connecting piece 19. This allows the relative rotation to be achieved while preventing the annular protrusion from falling off.

[0059] (4) When the first and second connecting pieces 19, 20 are connected to both ends of the pressure plate body 16, a pivot protruding from either the front surface 21 or the back surface 30 where the first and second connecting pieces 19, 20 abut may be inserted into a bearing hole provided in the other surface so that the pressure plates 2, 2 can rotate relatively around the axis of the pivot. The pivot may be a hollow shaft or a solid shaft. In this case, a claw-shaped or other anti-pullout protrusion provided at the tip of the pivot engages with the outer edge of the bearing hole to prevent the pivot from coming out of the bearing hole.

[0060] (5) As shown in Fig. 1, the presser plate 2 is provided with at least four insertion portions 15 at required intervals in the longitudinal direction, through which the pin body 11 can be inserted in the thickness direction of the presser plate 2. The insertion portions 15 may be formed only of insertion holes such as the elliptical insertion holes 45 penetrating the presser plate 2, or may be formed only of the U-shaped notches 49, 49 provided in a left-right opposed state on the left and right opposed side edge portions 46, 46 (Fig. 3) of the presser plate 2. Alternatively, they may be formed as a combination of the insertion holes and the U-shaped notches. This makes it possible to fix the sheet-like material 7 in a pressed state against the ground 10 through the pressing fixture 1, using the pressing pin, whether the pressing pin in hand is the nail-shaped type 9a pressing pin or the U-shaped type pressing pin 9b.

[0061] (6) The elliptical insertion hole 45 may be configured as an insertion hole that does not have the enlarged margin portion, and the U-shaped cutout portion 49 may be configured as a cutout portion that does not have the enlarged margin portion and the expanded inclined surface 53. In addition, the elliptical insertion hole 45 and the U-shaped cutout portion 49 may not be bordered by the border portion 59.

[0062] (7) As long as the cutout as the insertion portion can insert the pin body, it may be a U-shaped cutout, or may be a semicircular cutout, a rectangular cutout, a trapezoidal cutout, a triangular cutout, or the like.

[0063] (8) The pressing fixture 1 according to the present invention having the above-described configuration may be used without being connected to each other. The pressing fixture 1 may also be configured in a manner that does not anticipate interconnection (i.e., does not have the connecting hole 17 or does not have the pivot).

[0064] (9) The insertion portions 15 provided at required intervals along the longitudinal direction of the pressure plate 2 are set to at least four in order to enable the selection of another insertion portion in the event that the lower end of the pin body 11 hits a stone in the ground and cannot be driven any further. The number of insertion portions is set to a required number of four or more depending on the length of the pressure plate.

[0065] (10) As long as the presser plate 2 has at least four insertion portions 15 at required intervals in the longitudinal direction through which the pin body 11 can be inserted in the thickness direction of the presser plate 2, it is not necessary that the first and second connecting pieces 19, 20 are connected to both ends of the presser plate body 16. Even if the first and second connecting pieces 19, 20 are connected, the presser plate 2 may not have the step surfaces 26, 29. As long as the presser plate 2 has a band-like shape, the shape of its cross section does not matter, and it may have, for example, a kamaboko-shaped cross section in which the front surface 3 has a convex arc shape and the back surface 6 has a flat surface.

[0066] (11) When the insertion portion 15 is configured as an insertion hole 44 penetrating in the thickness direction of the presser plate 2, the insertion hole 44 is not necessarily provided on the center line in the longitudinal direction of the presser plate 2. In addition, the U-shaped cutout portion 49 is not necessarily provided in the center between the adjacent insertion holes 44, 44.

[0067] (12) The continuous small hole structure 69 including the honeycomb structure may be configured as a continuous small hole structure consisting of circular holes, triangular holes, rectangular holes, or other angular holes, or a combination of these. As described above, the continuous small hole structure 69 can suppress crack damage of the pressing plate body 16 due to impact to a certain extent, and by providing the continuous small hole structure 69, deterioration of a sheet-like material such as a weed control sheet due to heat storage in the pressing fixture 1 can be prevented by good heat dissipation in the continuous small hole structure 69 under the scorching sun, etc. Furthermore, since a large number of small holes are provided, it is possible to save on resin material for manufacturing the pressing fixture.

[0068] (13) The continuous small hole structure 69 may not be provided.

[0069] (14) The leading edges of each of the first and second connecting pieces 19, 20 do not need to be configured to have an outwardly protruding semicircular arc shape as shown in the above embodiment, but may have a rectangular shape with rounded corners, etc.

[0070] (15) In the present invention, the sheet-like material 7 is not limited to the weed control sheet, but may be mulch, a cover sheet such as a blue tarp for covering materials, or the like. The pressing and fixing of the sheet-like material 7 by the pressing and fixing device 1 is not limited to the pressing and fixing of the edge portion of the sheet-like material 7, but may be performed at any portion of the surface of the sheet-like material 7. Moreover, the pressing and fixing does not need to be performed by sequentially connecting the pressing and fixing devices 1.

[0071] (16) The overall length of the pressing fixture 1 according to the present invention (the overall length of the pressing plate) is set to about 430 mm in the above embodiment, but may be longer, such as about 500 to 1000 mm, depending on the application. [Explanation of symbols]

[0072] 1. Belt-shaped sheet pressing fixture 2 Presser plate 3 surface 5 Pressed part 6 Back side 7 Sheet-like objects 9 Presser pin 10 ground 11 pin body 13 Pressing section 15 Insertion part 16 Presser plate body 17 Connection hole 19 First connecting piece 20 Second connecting piece 26 Step surface 29 Step surface 37 Annular protrusion 39 Outer surface 40 Inner surface 41 Communication connection hole 45 Oval Through Hole 49 U-shaped notch 53 Extended Inclined Plane 59 Border 60 Center line reinforcement 69 Continuous pore structure 69a Honeycomb structure

Claims

1. A belt-shaped sheet-like object pressing and fixing device that presses and fixes a sheet-like object to the ground via a pressing pin, A pressing portion is provided on the surface of a band-shaped pressing plate extending in the longitudinal direction, and the back surface of the pressing plate is brought into contact with the sheet-like material to press and fix the sheet-like material to the ground, The pressing pin has a pressing portion at an upper end of a pin body, the pressing portion pressing the pressed portion, The pressing plate is provided with at least four insertion portions at required intervals in the longitudinal direction thereof, through which the pin body can be inserted in the thickness direction of the pressing plate, A belt-shaped sheet pressing and fixing device, characterized in that the pin body, having passed through the insertion portion, is inserted into the ground, whereby the pressing portion presses the pressed portion toward the ground.

2. 2. A belt-shaped sheet pressing and fixing device as described in claim 1, characterized in that the pressing plate has an insertion portion through which the pin body can be inserted at each of both longitudinal end portions, and a plurality of the insertion portions are provided at a required interval in the longitudinal direction at the intermediate portion in the longitudinal direction.

3. The belt-shaped sheet pressing and fixing device according to claim 1 is configured to be interconnected, and the insertion portions provided at both ends of the pressing plate in the longitudinal direction are configured as connecting holes, A band-shaped sheet-like object pressing and fixing device characterized in that, when the pin body is inserted into a communicating connecting hole formed by aligning the center of the connecting holes, the pressure plates are capable of rotating around the axis of the pin body.

4. The belt-shaped sheet pressing and fixing device according to claim 1 is configured to be interconnected, and the pressing plate has first and second connecting pieces connected to both ends of the pressing plate body, and the first and second connecting pieces are each provided with the insertion portion configured as a connecting hole, and the pressing plates are rotatable about the axis of the pin body when the pin body of the pressing pin is inserted into a communicating connecting hole formed by aligning the hole centers of the connecting holes, the pressure plate body has the same thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 of the thickness of the pressure plate body, a surface of the first connecting piece portion is connected to a surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, and a back surface of the first connecting piece portion is flush with a back surface of the pressing plate body, A strip-shaped sheet-like object pressing and fixing device characterized in that the surface of the second connecting piece is flush with the surface of the pressing plate main body, and the back surface of the second connecting piece is connected to the back surface of the pressing plate main body via a step surface perpendicular to the longitudinal direction.

5. The leading edge of each of the first and second connecting pieces is semicircular and protruding outward, and the connecting hole provided in each of the first and second connecting pieces is disposed at the center of the semicircular shape, an annular protrusion is provided on the surface of the first connecting piece portion at a peripheral portion of the connecting hole, and an outer peripheral surface of the annular protrusion abuts against an inner peripheral surface of the connecting hole when the annular protrusion is fitted into the connecting hole of the second connecting piece portion; Alternatively, an annular protrusion is provided on the back surface of the second connecting piece portion at a peripheral portion of the connecting hole, and an outer peripheral surface of the annular protrusion abuts against an inner peripheral surface of the connecting hole when the annular protrusion is fitted into the connecting hole of the first connecting piece portion, 5. The band-like sheet pressing and fixing device according to claim 4, wherein said annular projection is rotatable about the axis of said connecting hole in said fitted state.

6. The belt-shaped sheet-like object holder according to claim 1 is configured to be connectable to each other, and the pressing plate has first and second connecting pieces connected to both ends of the pressing plate body, the pressure plate has a uniform thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 of the thickness of the pressure plate body, a surface of the first connecting piece portion is connected to a surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, and a back surface of the first connecting piece portion is flush with a back surface of the pressing plate body, The surface of the second connecting piece is flush with the surface of the pressing plate body, and the back surface of the second connecting piece is connected to the back surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, A band-shaped sheet-like object pressing and fixing device characterized in that, when the front surface of the first connecting piece portion and the back surface of the second connecting piece portion are abutted, a pivot protruding from either the front surface or the back surface is inserted into a bearing hole provided on the other surface, and a slip-out prevention locking protrusion provided at the tip of the pivot is engaged with the outer edge portion of the bearing hole, thereby allowing the pressing plates to rotate around the axis of the pivot without the pivot escaping from the bearing hole.

7. A band-shaped sheet-like object pressing and fixing device as described in any one of claims 1 to 6, characterized in that the insertion portion provided on the pressure plate is an insertion hole penetrating the pressure plate in its thickness direction, and / or left and right cutout portions provided on the left and right side edge portions of the pressure plate and opening at the side edges of the pressure plate.

8. the insertion portion provided in the pressing plate is an insertion hole penetrating the pressing plate in a thickness direction thereof, and / or left and right notches provided in left and right side edge portions of the pressing plate in a state of being opposed to each other laterally and opening at the side edges of the pressing plate, The insertion hole is formed as an elliptical insertion hole that is long in the longitudinal direction of the pressing plate and has an enlarged margin portion that is larger than the diameter of the pin body, The interconnectable band-like sheet pressing and fixing device as described in claim 7, characterized in that the cutout portion is formed as a U-shaped cutout portion that opens at the side edge of the pressure plate as an expanded margin portion larger than the diameter of the pin body, and the front and back sides of the bottom part of the U-shape of the U-shaped cutout are configured as expanded inclined surfaces that expand in an inclined manner toward the inside of the pressure plate.

9. A band-shaped sheet pressing and fixing device as described in any one of claims 1 to 6, characterized in that the pressing plate is provided with a continuous small hole structure portion including a honeycomb structure portion in which countless small holes are provided in succession.

10. A belt-shaped sheet-like object pressing and fixing device that presses and fixes a sheet-like object to the ground via a pressing pin, and is capable of being interconnected; A pressing portion is provided on the surface of a band-shaped pressing plate extending in the longitudinal direction, and the back surface of the pressing plate is brought into contact with the sheet-like material to press and fix the sheet-like material to the ground, The pressing pin has a pressing portion at an upper end of a pin body, the pressing portion pressing the pressed portion, The presser plate has a first and a second connecting piece portion provided at both ends of a presser plate body, the first and second connecting pieces having connecting holes provided therein, the pressure plate body has a uniform thickness over its entire length, and the thickness of the first and second connecting pieces is set to 1 / 2 of the thickness of the pressure plate body, a surface of the first connecting piece portion is connected to a surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, and a back surface of the first connecting piece portion is flush with a back surface of the pressing plate body, The surface of the second connecting piece is flush with the surface of the pressing plate body, and the back surface of the second connecting piece is connected to the back surface of the pressing plate body via a step surface perpendicular to the longitudinal direction, an annular protrusion is provided on the surface of the first connecting piece portion at a peripheral portion of the connecting hole, and an outer peripheral surface of the annular protrusion abuts against an inner peripheral surface of the connecting hole when the annular protrusion is fitted into the connecting hole of the second connecting piece portion; Alternatively, an annular protrusion is provided on the back surface of the second connecting piece portion at a peripheral portion of the connecting hole, and when the annular protrusion is fitted into the connecting hole of the first connecting piece portion, an outer peripheral surface of the annular protrusion abuts against an inner peripheral surface of the connecting hole, In the fitted state, the annular protrusion is rotatable about the axis of the connecting hole, the pressing plate body is provided with the insertion portions formed as elliptical insertion holes having enlarged margin portions that are long in the longitudinal direction and larger than the diameter of the pin body, the insertion portions being spaced apart from each other at required intervals in the extension direction on a center line in the longitudinal direction, The presser plate body has left and right side edge portions that are opposed to each other and open at the side edges of the presser plate, and U-shaped cutouts having an expanded margin larger than the diameter of the pin body of the presser pin are provided, and the front and back sides of the bottom portion of the U-shape of the U-shaped cutouts are configured as expanded inclined surfaces that expand in an inwardly inclined state of the presser plate, the peripheral edge of the pressing plate body, the elliptical insertion hole and the U-shaped cutout are each bordered by a border having a thickness extending across the front and back of the pressing plate body, and a center line reinforcement having a thickness extending across the front and back of the pressing plate body is provided along a longitudinal center line of the pressing plate body, the center line reinforcement comprising a connecting reinforcement portion connecting the long axis ends of the elliptical border portions of adjacent elliptical insertion holes and an end reinforcement portion connecting the elliptical border portions located at the ends to the end of the pressing plate body, A band-like sheet pressing and fixing device characterized in that a continuous small hole structure including a honeycomb structure portion is provided on both sides of the center line reinforcement portion in the area surrounded by the center line reinforcement portion, the peripheral edge portion, the elliptical edging portion, and the edging portion of the U-shaped cutout portion.

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