Fence auxiliary fixing device

Abstract

To provide a fence auxiliary fixing tool capable of stably supporting a fence even if it is a panel fence which is susceptible to wind resistance, and capable of being installed on an existing fence afterwards. [Solution] The auxiliary fence fixing device 1 is used to auxiliary fix adjacent fences 12 that are fixed across a post 11 erected on the ground, and includes a pair of L-shaped members 2 fixed to each of the adjacent fences 12, and a connecting member 3 that connects the pair of L-shaped members 2. The L-shaped member 2 has a vertical portion 21 that is bolted to the vertical surface of the perimeter frame 12b of the fence 12, and a bent portion 22 that extends approximately perpendicularly from one end of the vertical portion 21. The pair of L-shaped members 2 are connected to each other by bolting each bent portion 22 to the connecting member 3.

Description

[Technical Field]

[0001] This invention relates to an auxiliary fence fixing device that assists in fixing adjacent fences that are fixed across a support pole erected on the ground. [Background technology]

[0002] Generally, guardrails are installed along the boundaries of neighboring properties, such as factories and residential areas, to prevent intruders and clarify the boundaries. Mesh fences, which are made of wires arranged in a grid pattern, are often used for such guardrails. However, mesh fences cannot conceal the inside of the property from outside, and they do not provide sound insulation from inside or outside the property. For this reason, planar panel fences are sometimes used to enclose private properties, such as residential areas (see, for example, Patent Document 1). Such panel fences are generally bolted to posts erected in the ground via panel fasteners. Panel fences offer superior privacy and sound insulation compared to mesh fences.

[0003] Figure 5 shows the fixing structure of a protective fence using a typical panel fence. A protective fence 110 has a panel fence 112 fixed to a cylindrical support post 111 erected on the ground via a joint fitting 113. The joint fitting 113 has an arc-shaped support post abutting portion 113a that abuts against the support post 111, and a plate-shaped panel abutting portion 113b extending from one end of the support post abutting portion 113a. The joint fitting 113 is fixed to the support post 111 by inserting a bolt 114a into a bolt hole provided so as to pass through the support post 111 and the support post abutting portion 113a, and tightening a nut 114b. In addition, the panel fence 112 is fixed to the support 111 via the joint fitting 113 by inserting a bolt 115a into a bolt hole provided in each of the furring strips 112b that clamp the slit panel 112a and the panel abutment portion 113b, and tightening a nut 115b. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-195770 Summary of the Invention [Problem to be solved by the invention]

[0005] However, unlike mesh fences, panel fences are subject to significant wind resistance because wind cannot pass through them. Therefore, there is a risk that the panel fence 112 may not be able to be safely supported simply by being fixed to the posts 111 via the joint fittings 113, as shown in Figure 5 above. Specifically, the furring strips 112b of the panel fence 112 are made by bending a thin metal plate into a three-dimensional shape, and the bolt holes drilled therein are not particularly sturdy. For example, if a strong wind causes the panel fence 112 and the bolts 115a to shake violently, the bolt holes may deform, causing the panel fence 112 to come off.

[0006] In particular, it is said that typhoons have become larger and more powerful in recent years due to the effects of global warming. For example, Typhoon No. 21 of 2018 wreaked havoc mainly on Western Japan, causing extensive damage such as the collapse of numerous utility poles and steel towers. It has been reported that many of the protective fences that used panel fences at that time suffered damage such as the panels becoming detached from the supports or becoming damaged.

[0007] To stably support the panel fence, it is possible to adopt a new, sturdy fixing structure specifically for the panel fence. However, adopting a new fixing structure would require changes to the design of the posts and the fence itself, which could make it impossible to install on an existing fence.

[0008] The purpose of this invention is to provide an auxiliary fence fixing device that can stably support a fence, even if it is a panel fence that is susceptible to wind resistance, and that can be installed on an existing fence after the fact. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides an auxiliary fence fixing device that auxiliary fastens adjacent fences that are fixed across a post erected on the ground, and is characterized in that it comprises a pair of L-shaped members fixed to each of the adjacent fences, and a connecting member that connects the pair of L-shaped members, and the L-shaped members have a vertical portion that is bolted to the vertical surface of the fence's perimeter frame, and a bent portion that extends approximately perpendicularly from one end of the vertical portion, and the pair of L-shaped members are connected to each other by bolting each of the bent portions to the connecting member.

[0010] In the auxiliary fence fixing device according to claim 1, the vertical portion is formed in an elongated shape and has an elongated bolt insertion groove that is open toward the other end where the bent portion is not provided. is preferred.

[0011] In the above auxiliary fence fixing device, the vertical portion is preferably fixed to the peripheral frame of the fence by at least two bolts or screws provided on the peripheral frame of the fence.

[0012] In the above-mentioned auxiliary fence fixing device, it is preferable that the bent portion has a bolt insertion hole for bolting to the connecting member, and that the bolt insertion hole is provided at an end away from the vertical portion and is an elongated hole extending in the extension direction of the bent portion.

[0013] In the above-mentioned auxiliary fence fixing device, it is preferable that the connecting member is a long, flat plate having a pair of bolt insertion holes for bolting to the bent portion, the bolt insertion holes being provided at both ends of the connecting member and being elongated holes extending in the longitudinal direction of the connecting member. [Effects of the Invention]

[0014] The auxiliary fence fixture of this invention connects adjacent fences across a post by the auxiliary fence fixture, providing stable support for the fence. Furthermore, it is made up of a pair of L-shaped members and a connecting member. The L-shaped members can be fastened to the fence using existing bolts or the like used to fasten fences to posts, so it can be installed on existing fences after the fact. [Brief explanation of the drawings]

[0015] [Figure 1] (a) is a perspective view of a fixing point of a protective fence using an auxiliary fence fixing device according to one embodiment of the present invention, and (b) is a plan view. [Figure 2] (a) is a front view of the fixing point of the protective fence using the above-mentioned fence auxiliary fixing device, (b) is a side view, and (c) is a back view. [Figure 3] 1A is a plan view of an L-shaped member used in the above-mentioned fence auxiliary process tool, FIG. 1B is a side view, and FIG. 1C is a front view. [Figure 4] 1A is a plan view of a connecting member used in the above-mentioned fence auxiliary process tool, FIG. 1B is a side view, and FIG. 1C is a front view. [Figure 5] (a) is a perspective view of the fixing points of a conventional protective fence, and (b) is a plan view. DETAILED DESCRIPTION OF THE INVENTION

[0016] An auxiliary fence fixing device according to one embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIGS. 1(a) and 1(b), the auxiliary fence fixing device 1 is used to auxiliary fix adjacent fences (panel fences 12) that are fixed across a post 11 erected on the ground. The auxiliary fence fixing device 1 is preferably installed on the site side of a protective fence 10 using a panel fence 12. Note that FIG. 1(a) shows the fixing location of the protective fence 10 equipped with the auxiliary fence fixing device 1 as viewed from the site side, with the front view taken from the lower right to the upper left in the figure. The horizontal front-to-back direction in the front view is defined as the X direction, the horizontal direction perpendicular to the X direction is defined as the Y direction, and the vertical direction is defined as the Z direction. Note that FIGS. 2(a) to 2(c) show the outlines of each component in partial perspective.

[0017] The protective fence 10 is constructed by driving posts 11 into foundations built at regular intervals on the ground and erecting a panel fence 12 between the posts 11. One end of the panel fence 12 is fixed to the post 11 via a joint fitting 13. In this embodiment, one of the two joint fittings 13 is arranged on the outer surface of the post 11 facing away from the site, and the other is arranged on the inner surface of the post 11 facing away from the site.

[0018] The joint fitting 13 has an arc-shaped pillar abutting portion 13a that abuts against the pillar 11, and a plate-shaped panel abutting portion 13b that extends from one end of the pillar abutting portion 13a. The joint fitting 13 is fixed to the pillar 11 by inserting a bolt 14a into a bolt hole provided in the pillar 11 and the pillar abutting portion 13a and tightening a nut 14b. The panel fence 12 is fixed to the pillar 11 via the joint fitting 13 by inserting a bolt 15a into a bolt hole provided in the peripheral frame 12b that holds the slit panel 12a and the panel abutting portion 13b, and tightening the bolt with a nut 15b and a washer 15c. The panel fence 12 is assembled by sandwiching multiple slit panels 12a between vertical frames (perimeter frames 12b) with a U-shaped cross section on both the left and right sides, and these vertical frames are further sandwiched between upper and lower horizontal frames on the top and bottom sides. The vertical and horizontal frames are fastened together with screws 16a on both sides. The screws 16a preferably have flat heads so that they do not protrude from the surface of the peripheral frame 12b.

[0019] The auxiliary fence fixing device 1 comprises a pair of L-shaped members 2 fixed to adjacent panel fences 12, and a connecting member 3 connecting the pair of L-shaped members 2. The L-shaped member 2 has a vertical portion 21 fixed with a bolt to the vertical surface of the peripheral frame 12b of the panel fence 12, and a bent portion 22 extending substantially perpendicularly in the X direction from one end of the vertical portion 21. The pair of L-shaped members 2 are connected to each other by fixing each bent portion 22 to the connecting member 3 with a bolt. The L-shaped member 2 and connecting member 3 are made of a metal material that has sufficient strength and rust resistance, such as stainless steel, and may be painted or plated as appropriate.

[0020] As shown in Figures 3(a) to 3(c), the vertical portion 21 of the L-shaped member 2 is formed long in the Z direction and has a long bolt insertion groove 21a that opens toward the other end 21b where the bent portion 22 is not provided. The other end 21b of this split vertical portion 21 is bent in the direction opposite to the abutment surface with the panel (X direction). The bent portion 22 also has a bolt insertion hole 22a for bolting to the connecting member 3 (see Figure 3(a)). This bolt insertion hole 22a is provided at the end of the bent portion 22 away from the vertical portion 21 and is an elongated hole that extends in the extension direction of the bent portion 22 (X direction).

[0021] The vertical portion 21 of the L-shaped member 2 is fixed to the peripheral frame 12b of the panel fence 12 by at least two bolts or screws provided on the peripheral frame 12b of the panel fence 12 (see FIG. 1(a)). Specifically, the vertical portion 21 is fixed to the vertical frame portion of the peripheral frame 12b by a bolt 15a inserted through the panel abutment portion 13b of the joint fitting 13 and a screw 16a used to assemble the peripheral frame 12b. When fixing the bolt 15a, the nut 15b is inserted into the bolt 15a from outside the premises toward the inside of the premises, and the bolt is fixed inside the premises using the nut 15b and a square washer 15c. The screw 16a is inserted from inside the premises toward the outside of the premises with a round washer 16b interposed therebetween. In this way, the vertical portion 21 is firmly fixed to the peripheral frame 12b of the panel fence 12 by two bolts and screws. As a result, the vertical portions 21 reinforce the peripheral frame 12b, which is merely made by bending a thin metal plate.

[0022] Bolt 15a is originally a bolt for fastening coupling fitting 13, and screw 16a is originally a screw for assembling the vertical and horizontal frames of peripheral frame 12b, but because bolt insertion groove 21a is provided elongated along the longitudinal direction of vertical portion 21, these bolts 15a and screws 16a can also be used to fasten L-shaped member 2. Furthermore, even if the installation positions of bolt 15a and screw 16a differ depending on the type of panel fence, because bolt insertion groove 21a is elongated, they can be used to accommodate a variety of existing panel fences.

[0023] Furthermore, because the other end 21b of the vertical portion 21 is bent, if a square washer 15c is used, the washer 15c will not rotate when the nut 15b is fastened, allowing for a smooth fastening operation. Furthermore, because the square washer 15c has a large surface area that comes into contact with the vertical portion 21, even if the panel fence 12 and bolt 15a are shaken by a strong wind, for example, the force is not concentrated locally but is absorbed by the wide area of ​​the vertical portion 21, thereby preventing deformation of the bolt holes formed in the peripheral frame 12b of the panel fence 12.

[0024] 4(a) to 4(c), the connecting member 3 is a flat plate that is long in the Y direction, and has a pair of bolt insertion holes 3a provided at both ends thereof for bolting to the bent portion 22 of the L-shaped member 2. The bolt insertion holes 3a are elongated holes that extend in the longitudinal direction of the connecting member 3 (Y direction).

[0025] The connecting member 3 is attached so as to bridge the bent portions 22 of a pair of L-shaped members 2 adjacent in the Y direction (see FIG. 1(a)). The connecting member 3 is disposed on the underside of the bent portion 22, and a bolt 17a is inserted through the top surface of the bent portion 22 with a washer 17b interposed therebetween (see FIG. 2(b)). A nut 17d is then fastened to the underside of the connecting member 3 with a washer 17c interposed therebetween. As a result, the pair of L-shaped members 2 are connected to each other by the connecting member 3, and the auxiliary fence fixing device 1 is attached to the protective fence 10.

[0026] As shown in FIG. 5, in a conventional protective fence 110, the panel fence 112 is simply fixed to the support post 111 via a joint fitting 113. Furthermore, because the joint fitting 113 faces vertically, just like the panel fence 112, if a strong crosswind blows against one of the panel fences 112, for example, force is concentrated on the joint fitting 113, potentially bending the joint fitting 113 and causing the panel fence 112 to come off. In contrast, as shown in FIG. 1, in a protective fence 10 equipped with the auxiliary fence fixing device 1 of this embodiment, adjacent panel fences 12 on either side of the support post 11 are connected by the auxiliary fence fixing device 1, enabling stable support of the panel fence 12. In particular, even if a strong crosswind blows against one of the panel fences 12, the force acting on that panel fence 12 is instead applied to the auxiliary fence fixing device 1, rather than concentrating on the joint fitting 113. Furthermore, because the connecting member 3 is arranged horizontally, the connecting member 3 will not bend easily even if a force is applied from the panel fence 12 when it is hit by a crosswind. This makes it possible to prevent the panel fence 12 from coming off.

[0027] Furthermore, auxiliary fence fixing device 1 is composed of a pair of L-shaped members 2 and connecting member 3, and L-shaped member 2 can be fixed to panel fence 12 using existing bolts 15a, etc., used to fix panel fence 12 to support posts 11, so it can be installed on existing fences after the fact. In particular, bolt insertion groove 21a formed in vertical portion 21 of L-shaped member 2 is elongated, so as mentioned above, it can be used with a variety of existing panel fences.

[0028] The auxiliary fence fixing device 1 according to the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above embodiment, the L-shaped member 2 is attached to the panel fence 12 with the bent portion 22 facing up, but it may also be attached with the bent portion 22 facing down. Furthermore, while the connecting member 3 is shown as being rectangular in plan view, it may also be V-shaped (boomerang-shaped) in plan view, for example. In this way, even if the post 11 is thick in the X direction and protrudes toward the site, the auxiliary fence fixing device 1 can be attached to the safety fence 10 without the connecting member 3 coming into contact with the post 11. Furthermore, although the auxiliary fence fixing device 1 is intended for use with a safety fence using a panel fence, it may also be used with a safety fence using a mesh fence. [Explanation of symbols]

[0029] 1 Fence auxiliary fixing device 10 Protective fence 11 Posts 2 L-shaped members 21 Vertical section 21a Bolt insertion groove 22 Bend 22a Bolt insertion hole 3 Connecting members 3a Bolt insertion hole

Claims

1. This is a fence auxiliary fixing device that auxiliary fixes adjacent fences fixed on either side of a support pole erected on the ground, A pair of L-shaped members fixed to adjacent fences, respectively, and a connecting member connecting the pair of L-shaped members, The L-shaped member has a vertical portion that is fixed to a vertical surface of the perimeter frame of the fence with a bolt, and a bent portion that extends substantially vertically from one end of the vertical portion, The pair of L-shaped members are connected to each other by fastening the bent portions of each member to the connecting member with bolts.

2. The auxiliary fence fixing device according to claim 1, characterized in that the vertical portion is formed in an elongated shape and has an elongated bolt insertion groove that is open toward the other end where the bent portion is not provided.

3. 3. The auxiliary fence fixing device according to claim 2, wherein the vertical portion is fixed to the peripheral frame of the fence by at least two bolts or screws provided on the peripheral frame of the fence.

4. the bent portion has a bolt insertion hole for fastening to the connecting member with a bolt, 2. The auxiliary fence fixing device according to claim 1, wherein the bolt insertion hole is an elongated hole provided at an end remote from the vertical portion and extending in the direction of extension of the bent portion.

5. the connecting member is a long flat plate having a pair of bolt insertion holes for fastening to the bent portion with a bolt, 2. The auxiliary fence fixing device according to claim 1, wherein the bolt insertion holes are elongated holes provided at both ends of the connecting member and extending in the longitudinal direction of the connecting member.

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