JP3863794B2 - Connecting brackets that connect laying materials such as civil engineering stability sheets - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection fitting for connecting laying materials such as a civil engineering stabilization sheet.
[0002]
[Prior art]
Conventionally, in the embankment method for improving soft ground, laying materials such as civil engineering stability sheets and nets having the required tensile strength are laid on the surface of soft ground, and embankment is carried out from there, but laying materials are generally A roll having a width of about 2 to 3 meters, and the sides of the laying material are overlapped by about 50 cm to 1 meter, and a hard wire of about 70 cm is folded into an inverted U shape. U-pins (mesh skewers) were skewered into the overlapped part and fixed to the soil, or laid together by connecting them manually.
[0003]
[Problems to be solved by the invention]
However, in the method of connecting with the stitch skewer, the stitch skewer is only inserted into the ground, so the coupling is insufficient, and there is a problem that the connection will come off when the sheet is lifted by the wind. Therefore, there was a problem that labor cost was increased and the cost was high.
[0004]
The present invention solves the above-described problems, and provides a connection fitting for connecting laying materials such as a civil engineering stability sheet that can increase the working efficiency of laying material connection and increase the connection strength. Let it be an issue.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a connecting metal fitting for connecting laying materials such as a civil engineering stabilization sheet according to the invention of claim 1 is a laying material such as a civil engineering stabilizing sheet when stabilizing soil such as soft ground or slope. Is a connecting bracket that connects the laid materials to each other, and the connecting bracket includes at least two leg pieces arranged in parallel at a predetermined interval. The rear end of the leg piece is connected by a connecting part, and the front part of the leg piece is folded back to the connecting part side to form a retaining part, and the retaining part is folded back so as to overlap the leg piece and the tip The leg part is separated from the leg piece, and the folded part of the leg piece is formed with a sharp-angled projection part toward the front .
[0006]
In addition, the connection metal fitting which connects construction materials, such as a civil engineering stabilization sheet | seat which concerns on invention of Claim 2, when stabilizing soils, such as a soft ground and a slope, laying materials, such as a civil engineering stabilization sheet, is used for a soft ground and a law. A connecting bracket that is laid on a surface such as a surface and connects the laid materials together. The connecting bracket includes two leg pieces arranged in parallel at a predetermined interval, and a rear end portion of the leg pieces is connected. So that the front part of the leg piece is folded back to the connecting part side to form a retaining part, and the retaining part is arranged side by side at a predetermined interval on the side of the leg piece. The tip portion is bent and bent in a direction away from the back surface of the leg piece, and either one of the opposing surfaces of the leg piece and the turn-back portion is formed with a saw blade for retaining.
[0007]
In addition, a serrated engagement groove is formed on the surface of the leg piece in the longitudinal direction, and an insertion hole is formed through which the fitting is inserted. You may provide the engaging claw to engage.
[ 0008 ]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of a connecting bracket (hereinafter referred to as a connecting bracket) for connecting laying materials such as a civil engineering stabilization sheet according to the present invention. The connecting bracket A has two leg pieces 1 and 1 at a predetermined interval. The rear ends of the leg pieces 1 and 1 are connected by the connecting portion 2 and the front portions of the leg pieces 1 and 1 are folded back so as to overlap the connecting portion 2 side to prevent the leg pieces 1 and 1 from coming off. The parts 3 and 3 are formed.
[ 0009 ]
As shown in the central longitudinal sectional view of FIG. 2, the retaining portion 3 is formed to have a length of about 2/3 of the length of the leg piece 1, and the intermediate portion 3 a is pressed against the lower surface of the leg piece 1. The tip portion 3b is formed to be bent downward so as to be separated from the lower surface of the leg piece 1.
[ 0010 ]
And the outer side surface of the folding | returning part 1a of the leg piece 1 is provided with the acute-shaped protrusion part 4 toward the front, and it is easy to stab a laying material.
[ 0011 ]
When connecting the laying materials using the connecting metal A, as shown in FIG. 3A, the ends of the laying materials B1 and B2 are overlapped, and the connecting metal A is pierced from above the overlapping portion a. Then, the connecting portion 2 is pushed in until it comes into contact with the upper laying material B1 (see FIG. 3B). In this state, the retaining portion 3 penetrates the lower laying material B2, and the tip 3b of the retaining portion 3 is located below the lower laying material B2.
[ 0012 ]
Next, when both laying materials B1 and B2 are pulled in opposite directions so as to be separated, the lower laying material B2 is bent downward at the front portion of the retaining portion 3 as shown in FIG. Therefore, it is smoothly guided between the retaining portion 3 and the leg piece 1 and stopped by the folded portion 1a, and the upper laying material B1 is stopped by the connecting portion 2, and the upper laying material B1 The laying material B2 on the side can be easily and reliably connected by the connecting metal fitting A.
[ 0013 ]
This connection work is performed by sufficiently piercing the connection fitting A from above the overlapping portion a of the laying material B as described above and pulling the two laying materials B1 and B2 in opposite directions. In addition, since it is possible to confirm whether or not they are connected, the operation can be processed smoothly and completely.
[ 0014 ]
FIG. 4 shows another example of the connecting metal fitting. The connecting metal fitting A ′ has a plurality of leg pieces 1 arranged in parallel at predetermined intervals, and the end portions thereof are connected by the connecting portion 2 to form a comb shape as a whole. Is formed.
[ 0015 ]
According to this connecting metal fitting A ′, as shown in FIG. 5, even when the laying material is a net-like net B1 ′, B2 ′, the connecting member A includes the two leg pieces 1 and the retaining pieces 3. Compared to the fact that the number of wefts caught on the connecting part is small or not caught at all because it is configured so that the wefts are more likely to break or cannot be connected. Since the load applied to the weft thread of the net B ′ is distributed, the weft thread of the net B ′ is less likely to be disconnected, and the connection of the net B ′ can be reliably performed, and also due to the disconnection. Separation hardly occurs. The connecting metal fitting A ′ is not limited to the net B ′, and may be used for connecting the sheet-like laying material B described above.
[ 0016 ]
FIG. 6 shows a perspective view of still another example of the connecting bracket. The connecting bracket A1 includes two leg pieces 11, 11 arranged in parallel at a predetermined interval, and a rear end portion of the leg pieces 11, 11. Are connected by the connecting portion 12 and the front portions of the leg pieces 11 and 11 are folded back so as to be juxtaposed with the inner side surfaces of the leg pieces 11 and 11 toward the connecting portion 12 side at a predetermined interval. The parts 13 and 13 are formed (see FIG. 7A).
[ 0017 ]
And the folding | returning part 11a of the leg piece 1 is provided with the acute-shaped protrusion part 14 toward the front, and is easy to pierce a laying material.
[ 0018 ]
Furthermore, a retaining saw blade 15 is formed on the side surface 11a of the leg piece 11 facing the retaining part 13, and the retaining part 13 is formed so as to bend away from the back surface of the leg piece 11. (See FIG. 7B).
[ 0019 ]
Although not shown, the retaining portion 13 may be formed by being folded back so as to be juxtaposed on the outer side surface of the leg piece 11, and the saw-tooth 15 for retaining is provided on the leg piece 11 of the retaining portion 13. You may form in the side surface which opposes.
[ 0020 ]
When connecting the laying materials using the connection fitting A1, the ends of the laying materials B1 and B2 are overlapped in the same manner as the connection fitting A, and the connection fitting A1 is pierced from above the overlapping portion a. Push in until the connecting portion 12 contacts the upper laying material B1. In this state, the retaining portion 13 penetrates the lower laying material B2, and the tip 13b of the retaining portion 13 is located below the lower laying material B2.
[ 0021 ]
Next, when both the laying materials B1 and B2 are pulled in the opposite directions so as to be separated, the lower laying material B2 is bent downward at the tip portion 13a of the retaining portion 13, so that the retaining portion 13 and the leg It is guided smoothly between the pieces 11 and stopped by the folded-back portion 11a, and the upper laying material B1 and the lower laying material B2 can be easily and reliably connected to each other by the connecting metal A1 and the upper laying. The material B1 is caught on the saw blade 15 and is difficult to return, and the gap between the laying material B1 and the laying material B2 can be reduced. (See FIG. 8).
[ 0022 ]
In addition, since the connecting metal fitting A1 leg piece 11 and the retaining portion 13 are juxtaposed laterally and formed as a flat plate as a whole, it can be manufactured by punching a metal plate such as stainless steel. Further, it becomes possible to manufacture by injection molding (injection) of synthetic resin such as plastic, and the production efficiency can be improved.
[ 0023 ]
Further, FIG. 9 is a perspective view of another example of the connection fitting, FIG. 10 is a plan view, and a cross-sectional view taken along the line XX and YY, and this connection fitting A2 is the leg piece 11 of the connection fitting A1 described above. An engagement groove 20 having a sawtooth cross section in the longitudinal direction is formed on the front side. By attaching an engagement member 21 to the connection fitting A2, it is possible to connect the laying materials B1 and B2 with less displacement. Is. The engagement groove 20 is formed so that the tip 20a does not protrude from the surface of the leg piece 11, as shown in the enlarged sectional view of FIG.
[ 0024 ]
The engaging member 21 is formed with an insertion hole 22 for insertion from the rear side of the connection fitting A2 on the front and rear, and an engagement claw 23 that engages in a reverse direction when inserted into the insertion hole 22 obliquely downward from the upper wall surface. The protrusions are formed so that when the connecting fitting A2 is inserted, the engaging claws 23 engage with the engaging grooves 20 so that they cannot be returned. Reference numeral 24 denotes a knob that makes it easy to hold the engaging member 21 when the engaging member 21 is attached to the connection fitting A2.
[ 0025 ]
When the laying materials B1 and B2 are connected to each other using the connection fitting A2, the ends of the laying materials B1 and B2 are overlapped with each other as in the case of the connection fitting A (see FIG. 11A), and polymerization is performed. The connection fitting A2 is pierced from above the portion, and is pushed in until the retaining portion 13 penetrates the lower laying material B2 (see FIG. 11B).
[ 0026 ]
Next, as shown in FIG.11 (c), the engaging member 21 is inserted from the back of the connection metal fitting A2, and is inserted until it contacts the upper laying material B1. Since the engaging claw 23 provided on the engaging member 21 is engaged with the engaging groove 20 formed in the leg piece 11 in a non-returning manner, the engaging member 21 does not return from the inserted position. For this reason, as shown in FIG. 11 (d), the upper laying material B1 is blocked by the engaging member 21 and cannot return to the connecting portion 12 side, so the gap between the connecting portions of both the laying materials B1 and B2 Can be more reliably held in a small state.
[ 0027 ]
According to this connecting metal fitting A2, the lower laying material B2 is smoothly guided between the retaining portion 13 and the leg piece 11 because the front end portion 13a of the retaining portion 13 is curved downward, and is turned back. The upper laying material B1 is stopped by the engaging member 21, and the upper laying material B1 and the lower laying material B2 can be easily and reliably connected to each other by the connecting metal fitting A2. At the same time, since the gap between the upper laying material B1 and the lower laying material B2 does not widen, the earth and sand covered with the laying material does not flow out from the gap at the connecting portion.
[ 0028 ]
The connecting metal fitting A2 may be manufactured by punching a metal such as stainless steel or a synthetic resin such as plastic by injection molding in the same manner as the connecting metal fitting A1.
[ 0029 ]
As described above, the ends of the laying material can be overlapped and laid on the soil, and the laying materials can be connected to each other simply by piercing the connecting fitting into the overlapping portion of the laying material, thereby improving work efficiency. In addition, the work cost can be reduced. In addition, since the reliability of the connection is improved, work reliability can be obtained.
[ 0030 ]
In addition, although the above-mentioned connection metal fitting demonstrated the case where a civil engineering stabilization sheet | seat was connected as a laying material, this laying material is not limited to a civil engineering stabilization sheet | seat. It may be used for connecting anti-scatter sheets, or sand-proof nets such as nets with a fine mesh (such as insect-proof nets) so that the earth and sand in civil engineering works rise in the wind and do not damage nearby private houses and afforestation. Can be used for connecting when laying vertically, or for connecting building nets to prevent paint splashing or accidents due to falling tools when painting buildings in construction work As long as it is a sheet-like or net-like connection, its use is not limited.
[ 0031 ]
【The invention's effect】
According to the first aspect of the present invention, since the sharp projection is provided at the tip of the connecting metal fitting, it can be easily and reliably stabbed into the overlapping portion of the laying material , and the laying material is pulled apart. Since the retaining portion is caught by the lower laying material and the connecting portion is caught by the upper laying material, the laying material can be easily and reliably connected by simply pulling the laying material after piercing the connecting fitting.
[ 0032 ]
According to the invention of claim 2, since the retaining portion is folded back to the side of the leg portion, the metal plate can be formed by punching, and the production efficiency can be increased.
[ 0033 ]
Furthermore, since the sawtooth is formed on the side surface of the leg piece that faces the retaining portion, it is possible to reliably prevent the laying material once connected from being separated.
[ 0034 ]
According to the invention of claim 3, since the upper laying material can be held on the distal end side of the leg piece by engaging the engaging member after the connecting metal is pierced into the overlapping portion of the laying material, The gap generated between the laying materials can be reduced, and the outflow of earth and sand from the gap can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a connecting bracket according to the present invention. FIG. 2 is a central longitudinal sectional view of the connecting bracket. FIG. 3 is an explanatory view of a usage mode of the connecting bracket. A perspective view showing another example of a connecting metal fitting.
FIG. 5 is a perspective view showing a usage state of the connection fitting of the other example. FIG. 6 is a perspective view showing another example of the connection fitting.
FIGS. 7A and 7B are a plan view and a central vertical cross-sectional view of another example of the connecting bracket. FIG. 8 is an explanatory view of a usage example of the connecting bracket of the other example. FIG. 10 is a perspective view showing still another example. FIGS. 10A to 10C are a plan view, a cross-sectional view taken along the line X-X, and a cross-sectional view taken along the line Y-Y, respectively, of the coupling metal. FIGS. ) Is an explanatory diagram of how to use the above connecting bracket [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Leg piece 2 Connection part 3 Retaining piece 4 Protruding part A, A ', A1, A2 Connection metal fitting B Laying material

Claims (3)

A connecting bracket for laying a laying material such as a civil engineering stabilization sheet on the surface of a soft ground or slope when stabilizing soil such as soft ground or slope, and connecting the laid materials together. The at least two leg pieces are arranged in parallel at a predetermined interval, and the rear end portions of the leg pieces are connected by a connecting portion, and the front portion of the leg piece is folded back to the connecting portion side to prevent the retaining portion. And the turn-off preventing portion is folded back so as to overlap the leg piece and the tip portion is separated from the leg piece, and the folded-back portion of the leg piece forms an acute-shaped protruding portion toward the front . Connecting metal fittings that connect laying materials such as civil engineering stability sheets. A connecting bracket for laying a laying material such as a civil engineering stabilization sheet on the surface of a soft ground or slope when stabilizing soil such as soft ground or slope, and connecting the laid materials together. The two leg pieces are arranged side by side at a predetermined interval, and the rear ends of the leg pieces are connected by a connecting portion, and the front portion of the leg piece is folded back to the connecting portion side to prevent the retaining portion. And forming the retaining portion to be folded side by side at a predetermined interval on the side of the leg piece, and bending the tip portion in a direction away from the back surface of the leg piece. A connecting bracket for connecting laying materials, such as a civil engineering stabilization sheet, characterized in that a saw tooth for retaining is formed on either one of the opposing surfaces.   A serrated engagement groove is formed on the surface of the leg piece in the longitudinal direction, and an insertion hole is formed through which the fitting is inserted. The coupling fitting according to claim 2, wherein an engaging claw is provided.

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