Fence mounting structure

Abstract

To provide a fence installation structure capable of installing a new fence while keeping the existing fence in place.SOLUTION: A fence installation structure 1 comprises an existing fence 2 in which vertical bars 22 and horizontal bars 23 are arranged in a grid pattern and a new fence 3 attached thereto. The fence installation structure includes an existing fence fixed part 41, a new fence fixed part 42, and a connecting part 43 for connecting the same. The existing fence fixed part 41 includes: a fixing part 411 abutted on one side of vertical bar 22; a sub-plate 412 arranged opposite to the fixing part 411 and in contact with the other side of the vertical bar 22; multiple vertical bar fixing members 413 for fixing the vertical bar 22 in the state sandwiching the same between fixing part 411 and sub-plate 412; a fixing hole 414 that is used to fix the fixing part 411 and the sub-plate 412 with one-side vertical bar fixing members 413 out of the multiple vertical bar fixing members 413; and a fixing position change part capable of changing the fixing position of the other-side vertical bar fixing members 413 out of the multiple vertical bar fixing members 413.SELECTED DRAWING: Figure 4A

Description

[Technical Field]

[0001] The present disclosure relates to a fence mounting structure. [Background technology]

[0002] BACKGROUND ART Conventionally, a structure has been known in which a new fence is fixed by attaching metal fittings to the posts of an existing fence. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-225892 Summary of the Invention [Problem to be solved by the invention]

[0004] Even if there was no problem with the existing fence itself, there were requests to install a new fence while leaving the existing fence in place, such as by installing board-shaped panels to provide privacy or by installing a fence that was taller than the existing fence. [Means for solving the problem]

[0005] the existing fence fixing part has a fixing part that abuts one side of the vertical reinforcement bars in the thickness direction of the fence, a sub-plate that is arranged opposite the fixing part and abuts the other side of the vertical reinforcement bars in the thickness direction of the fence, a plurality of vertical reinforcement fixing members that fix the vertical reinforcement bars while sandwiching them between the fixing part and the sub-plate, fixing holes that can fix the fixing part and the sub-plate with the vertical reinforcement fixing member on one side of the plurality of vertical reinforcement fixing members, and a fixing position changing part that can change the fixing position of the vertical reinforcement fixing member on the other side of the plurality of vertical reinforcement fixing members. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a front view of the fence mounting structure of the first embodiment as viewed from outside the site. FIG. [Figure 2] FIG. 1 is a plan view of a fence mounting structure according to a first embodiment. [Figure 3] FIG. 1 is a side view of a fence mounting structure according to a first embodiment. [Figure 4A] 1 is a partial perspective view of the fence mounting structure of the first embodiment as viewed from inside the site. FIG. [Figure 4B] FIG. [Figure 5] FIG. 10 is a front view of the fence mounting structure of the second embodiment as viewed from outside the site. [Figure 6] FIG. 10 is a plan view of the fence mounting structure of the second embodiment. [Figure 7] FIG. 10 is a side view of the fence mounting structure of the second embodiment. [Figure 8] FIG. 10 is a perspective view of a fence mounting structure according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0007] A first embodiment of the present disclosure will be described in detail below with reference to the drawings. As shown in FIG. 1 , in a fence mounting structure 1 of the first embodiment, a new fence 3 is disposed outside the site where an existing fence 2 is to be installed. A fence 10 is configured by attaching the new fence to the existing fence 2. The front side of FIG. 1 indicates the outside of the site, and the back side indicates the inside of the site. In this specification, the side of the site separated by the fence 10 is referred to as the inside, and the side opposite the site is referred to as the outside, with respect to the boundary between the site and the outside of the site. Outside the site may be, for example, a road surface or the site of another owner. The thickness direction of the fence 10 refers to the direction from the inside to the outside of the site. The fence mounting structure 1 includes an existing fence 2, a new fence 3, a connection part 4, and a cable tie 6.

[0008] The existing fence 2 is installed to separate an outdoor area and includes posts 21, vertical reinforcement bars 22, and horizontal reinforcement bars 23. The posts 21 are long, rectangular cylindrical members fixed to an installation surface 24 and extending upward. The installation surface 24 is the upper surface of the foundation of the fence to which the posts 21 are fixed. In this embodiment, the installation surface 24 is formed above the ground. The vertical reinforcement bars 22 and horizontal reinforcement bars 23 are strips of metal with smaller outer diameters than the posts 21. The vertical reinforcement bars 22 extend in the up-down direction, and the horizontal reinforcement bars 23 extend in the left-right direction when viewed from the front of the fence 10, and are arranged so as to intersect with each other. The vertical reinforcement bars 22 and horizontal reinforcement bars 23 are arranged in a lattice pattern and supported by the posts 21.

[0009] The new fence 3 is a separate component from the existing fence 2. The new fence 3 has a frame 31 and a panel 32. The frame 31 has a pair of vertical frames 311 extending vertically at both ends of the new fence 3 in a front view, and horizontal frames 312 connecting the vertical frames 311 at the upper and lower ends. Overall, the frame 31 forms a substantially rectangular edge. The lower horizontal frame 312 forms the lower end of the new fence 3, whose lower end is supported by the installation surface 24 of the existing fence 2. The panel 32 is formed by arranging thin, rectangular plates 321, each extending horizontally, vertically. Gaps 322 are formed between the plates 321. Because the panel 32 is formed by arranging the plates 321, attaching the new fence 3 to the existing lattice-like fence 2 makes it difficult to see the site from the outside.

[0010] The connection part 4 is a metal fitting that connects and secures the existing fence 2 and the new fence 3. The connection part 4 abuts and is secured to the existing fence 2 and the new fence 3, and is formed in a roughly U-shape in plan view, as shown in Figure 2. The connection part 4 has an existing fence fixing part 41, a new fence fixing part 42, a connecting part 43, and a corner part 44.

[0011] The existing fence fixing portion 41 is a flat plate-shaped member that is fixed to the vertical reinforcement 22 of the existing fence 2. The existing fence fixing portion 41 has a fixing portion 411, a sub-plate 412, a plurality of screws 413 as vertical reinforcement fixing members, fixing holes 414, and a fixing position changing portion 415.

[0012] As shown in FIGS. 4A and 4B, the fixing portion 411 is formed in a substantially U-shape when viewed from the front when attached to the existing fence 2. As shown in FIG. 4A, the fixing portion 411 is arranged so as to abut against one side of the vertical reinforcement 22 in the thickness direction of the fence 10. In the first embodiment, the fixing portion 411 abuts against the surface of the vertical reinforcement 22 on the inner side of the site. The fixing portion 411 has a first fixing surface 4111, a second fixing surface 4112, and a vertical fixing surface 4113. The first fixing surface 4111, the second fixing surface 4112, and the vertical fixing surface 4113 are formed from a single continuous plate-like member.

[0013] The first fixing surface 4111 is a horizontally long plate that extends in the left-right direction above the fixing portion 411 when the existing fence fixing portion 41 is fixed to the existing fence 2. The second fixing surface 4112 is a horizontally long plate that extends in the left-right direction below the fixing portion 411. The second fixing surface 4112 is disposed below the first fixing surface 4111 with a space between them. The first fixing surface 4111 and the second fixing surface 4112 are disposed so as to sandwich a plurality of vertical reinforcement bars 22 between them and the sub-plate 412, which will be described later. For example, the first fixing surface 4111 and the second fixing surface 4112 have a length that allows them to straddle two vertical reinforcement bars 22 that are disposed with a space between them.

[0014] The vertical fixing surface 4113 is disposed at one longitudinal end of the first fixing surface 4111 and the second fixing surface 4112, and is a portion that connects the first fixing surface 4111 and the second fixing surface 4112 in the up-down direction. The vertical fixing surface 4113 has a notch 4114 and a claw 4115.

[0015] The cutout 4114 is formed by cutting out the center of the vertical fixing surface 4113 in the up-down direction. The cutout 4114 is arranged to divide the vertical fixing surface 4113 into upper and lower parts, and is formed continuous with the connecting portion 43 described below. The upper and lower parts of the vertical fixing surface 4113 and the first fixing surface 4111 and second fixing surface 4112 are connected by the surface surrounding the cutout 4114 of the connecting portion 43. The cutout 4114 is formed to allow the horizontal reinforcing bars 23 to be avoided if they are arranged in an obstructive position. It is not necessary to arrange the horizontal reinforcing bars 23 in the cutout 4114, but this cutout 4114 is used when the horizontal reinforcing bars 23 are located where you want to attach the connecting portion 4. Arranging the horizontal reinforcing bars 23 in the cutout 4114 increases the fixing strength of the existing fence fixing portion 41 to the existing fence 2.

[0016] The claws 4115 are arranged at the top and bottom of the notch 4114 in the vertical center of the vertical fixing surface 4113. The claws 4115 are formed to protrude from the vertical fixing surface 4113 to the other side in the thickness direction of the fence 10, i.e., toward the inside of the roughly U-shaped connecting portion 4. The claws 4115 are not formed on the back surfaces of the first fixing surface 4111 and the second fixing surface 4112. By protruding the claws 4115 toward the back side of the vertical fixing surface 4113, i.e., toward the inside of the U-shaped connecting portion 4, the fixing portion 411 and the claws 4115 are arranged to surround the vertical reinforcement 22. The claws 4115, on the back side of the fixing portion 411, regulate the left-right position of the fixing portion 411 relative to the vertical reinforcement 22, thereby determining the left-right position of the fixing portion 411.

[0017] The sub-plate 412 is a horizontally long plate whose longitudinal and lateral dimensions are smaller than those of the first fixing surface 4111 and the second fixing surface 4112. The sub-plate 412 is arranged to abut against the other side of the vertical reinforcement 22 in the thickness direction of the fence 10. The sub-plate 412 is arranged on the back side of the fixing portion 411, i.e., inside a recess formed in the connecting portion 4 that is approximately U-shaped in plan view, so as to face the fixing portion 411. The sub-plate 412 is fixed to the fixing portion 411 with a plurality of screws 413, which will be described later. The sub-plate 412 is fixed to the back side of either the first fixing surface 4111 or the second fixing surface 4112, whichever is selected. In this embodiment, the sub-plate 412 is arranged on the back side of the first fixing surface 4111.

[0018] The fixing holes 414 are formed in both the fixing portion 411 and the sub-plate 412. The fixing holes 414 are holes through which a plurality of screws 413 (described later) can pass to fix the fixing portion 411 and the sub-plate 412 together. The fixing holes 414 include a fixing portion fixing hole 4141 and a sub-plate fixing hole 4142. The fixing portion fixing holes 4141 are formed at the ends of the first fixing surface 4111 and the second fixing surface 4112 on the longitudinal fixing surface 4113 side. A female thread is formed on the inner periphery of the fixing portion fixing hole 4141. The sub-plate fixing hole 4142 is formed at one longitudinal end of the sub-plate 412. The fixing portion fixing hole 4141 and the sub-plate fixing hole 4142 have the same inner diameter.

[0019] Each of the multiple screws 413 has a shank 413a and a shank head 413b with an outer diameter larger than that of the shank 413a. Of the multiple screws 413, one screw 413 is fastened with the shank 413a aligned along the inward / outward direction of the site, with the vertical reinforcing bars 22 sandwiched between the fixing part 411 and the sub-plate 412. The screw 413 on one side is fastened with the vertical reinforcing bars 22 sandwiched between the connecting part 43 (described later) and the shank 413a of the screw 413. In other words, the screw 413 on one side is fastened with the vertical reinforcing bars 22 positioned within the space surrounded by the shank 413a of the screw 413, the connecting part 43 (described later), the fixing part 411, and the sub-plate 412. The screw 413 on one side is inserted from the sub-plate 412 side and fixed by penetrating the fixing hole 414.

[0020] The fixing position change portion 415 is composed of two through holes 415a, 415b arranged at a distance from each other along the longitudinal direction of the fixing portion 411, and two through holes 415c, 415d arranged at a distance from each other along the longitudinal direction of the sub-plate 412. Female threads are formed on the inner peripheries of the through holes 415a, 415b formed in the fixing portion 411. The fixing position change portion 415 is formed to the same size as the fixing hole 414 and is arranged at a distance from the fixing hole 414 in the left-right direction of the fence 10. The distance between the two through holes 415a, 415b and between the through holes 415c, 415d are shorter than the distance between the fixing hole 414 and the through holes 415b, 415d on the fixing hole 414 side of the fixing position change portion 415. The other screw 413 of the plurality of screws 413 that is fastened at a position spaced apart from the fixing hole 414 in the left-right direction is fixed to the fixing position changing portion 415 .

[0021] As shown in FIG. 4A , the fixing portion 411 and the sub-plate 412 are fixed with the vertical reinforcing bars 22 sandwiched between them. At this time, a second vertical reinforcing bar 22 extending vertically is positioned adjacent to the vertical reinforcing bar 22 secured by the screw 413 inserted through the fixing hole 414, laterally spaced from the fixing hole 414. The fixing hole 414 and the through-holes of the fixing position change portion 415 are pre-formed in the existing fence fixing portion 41. The vertical reinforcing bars 22 are spaced at various intervals depending on the fence 10. For this reason, if the fixing position change portion 415 only has one through-hole, if that through-hole overlaps with another adjacent vertical reinforcing bar 22, it will be impossible to fasten the screw 413 through the through-hole on the fixing position change portion 415 side. This will prevent the fixing portion 411 and the sub-plate 412 from being fixed at two points. If the fixing portion 411 and the sub-plate 412 could only be fixed at one point, the components constituting the connection portion 4 would rotate around the vertical reinforcement 22, resulting in unstable fixation. The fixing position change portion 415 is configured with two through-holes, allowing the fixing position of the screw 413 on the other side to be changed. Even if the position of another adjacent vertical reinforcement 22 overlaps with one of the through-holes in the fixing position change portion 415, the fixing portion 411 and the sub-plate 412 can be fixed at two points by inserting the screw 413 into the other through-hole. In FIG. 2 , none of the through-holes 415a and 415b in the fixing position change portion 415 (and the through-holes 415c and 415d located behind the through-holes 415a and 415b) overlap with the vertical reinforcement 22. In such a case, the screw 413 may be fastened to either of the through-holes 415a and 415b (and the through-holes 415a and 415b). By fixing at two points, the vertical reinforcement bars 22 adjacent in the left-right direction can be stably sandwiched between the fixing portion 411 and the sub-plate 412.

[0022] The new fence fixing portion 42 is a plate-shaped member fixed to the new fence 3. The new fence fixing portion 42 has a new fence abutment surface 421, a frame engagement surface 422, a notch groove 423, and a first slit hole 51. The new fence abutment surface 421 is a thin, approximately rectangular plate surface that abuts against the surface of the vertical frame 311 of the new fence 3 on the inside of the site. The new fence abutment surface 421 is positioned opposite the fixed portion 411. The frame engagement surface 422 is a surface that bends from a free end on one side of the new fence abutment surface 421 in the left-right direction toward the opposite side of the fixed portion 411. The frame engagement surface 422 extends along the surface of the vertical frame 311 in the thickness direction of the fence 10 and is positioned so that it can engage with the surface of the vertical frame 311 in the thickness direction. The notch groove 423 is formed in a position opposite a fixing hole 414 formed in the fixed portion 411. The notched groove 423 is formed by cutting out a roughly U-shape in the new fence abutment surface 421. The notched groove 423 is formed so that the shank of a screwdriver does not interfere when fastening the screw 413 in the fixing hole 414.

[0023] The connecting portion 43 is a surface that connects the existing fence fixing portion 41 and the new fence fixing portion 42. The connecting portion 43 extends along the thickness direction of the fence 10. A portion of the connecting portion 43 that continues to the existing fence fixing portion 41 is cut out continuing from the notch 4114 formed in the vertical fixing surface 4113, forming a roughly U-shaped opening in the vertical center. The connecting portion 43 has a second slit hole 52.

[0024] The corner portion 44 is a portion where the new fence fixing portion 42 and the connecting portion 43 are connected in a generally L-shape in plan view. At the corner portion 44, the new fence fixing portion 42 and the connecting portion 43 are connected at an angle of, for example, approximately 90 degrees.

[0025] The slit 5 is a collective term for the first slit 51 formed in the new fence fixing portion 42 and the second slit 52 formed in the connecting portion 43. The slit 5 is a thin through-hole that extends in the vertical direction when the connecting portion 4 is attached to the new fence 3 and the existing fence 2. As shown in FIG. 4B , the first slit 51 extends in the vertical direction along the edge 42a that faces the edge 44a on which the corner 44 of the new fence fixing portion 42 is located. The second slit 52 extends in the vertical direction along the edge 44a on which the corner 44 of the connecting portion 43 is located.

[0026] The cable tie 6 has a length that allows it to be inserted through the first slit hole 51 and the second slit hole 52 and engage with the end of the new fence 3. By inserting the cable tie 6 through the first slit hole 51 and the second slit hole 52, it is connected to the new fence fixing part 42 and the connecting part 43. The cable tie 6 is string- or band-shaped and made of a material that is easily deformed. The cable tie 6 connects and secures the new fence 3 to the existing fence 2 via the connecting part 43. For this reason, it is preferable that the cable tie 6 be made of a material with high rigidity and strength. For example, it can be made of metal.

[0027] The fence installation method will be described. First, the existing fence fixing portion 41 of the connection portion 4 is fixed to the existing fence 2 (existing fence fixing step S1). Specifically, the vertical reinforcement bars 22 are positioned so that they contact the connecting portion 43, and the vertical reinforcement bars 22 are positioned inside the claw portions 4115. At the same time, the first fixing surface 4111 and the second fixing surface 4112 are positioned on the inside side of the vertical reinforcement bars 22. Next, the sub-plate 412 is positioned on the back side of either the first fixing surface 4111 or the second fixing surface 4112. Then, screws 413 are inserted into the fixing holes 414 from the sub-plate 412 side and fastened. At this time, the vertical reinforcement bars 22 are positioned relative to the existing fence fixing portion 41 so that they are surrounded by the connecting portion 43, fixing portion 411, sub-plate 412, and claw portions 4115, and are fixed with the screws 413 passing through the fixing holes 414. Furthermore, if the position of the vertical reinforcing bars 22 overlaps with any of the through holes 415a, 415b, 415c, and 415d of the fixing position changing part 415, the through holes 415a, 415b, 415c, and 415d are shifted to avoid the vertical reinforcing bars 22. Furthermore, if the horizontal reinforcing bars 23 overlap with the connecting part 4, it is preferable to position the horizontal reinforcing bars 23 so that they pass through the notches 4114 formed in the vertical fixing surface 4113.

[0028] Next, the new fence fixing portion 42 is brought into contact with the surface of the new fence 3 on the inside of the site (abutting step S2). Then, the cable ties 6 are inserted through the first slit holes 51 and the second slit holes 52 (cable tie insertion step S3). The cable ties 6 may be inserted through the slit holes 5 while the new fence fixing portion 42 is in contact with the new fence 3. Alternatively, the cable ties 6 may be inserted through the slit holes 5 in advance. Next, the cable ties 6 are wrapped around and engaged with the end of the new fence 3, specifically, around the vertical frame 311. The cable ties 6 are passed through the gaps 322 between the plates 321 to secure the vertical frame 311 and the new fence fixing portion 42. As a result, the new fence 3 and the new fence fixing portion 42 of the connection portion 4 are connected to the connecting portion 43, and the new fence 3 is secured to the existing fence 2 via the connecting portion 43 (securing step S4).

[0029] The first embodiment provides the following advantages: The fence mounting structure 1 is a mounting structure for a fence 10 configured by attaching a new fence 3 to an existing fence 2 having vertical reinforcement bars 22 and horizontal reinforcement bars 23 arranged in a grid pattern. The fence mounting structure 1 is configured to include an existing fence fixing part 41 that is fixed to the existing fence 2, a new fence fixing part 42 that is fixed to the new fence 3, and a connecting part 43 that connects the existing fence fixing part 41 and the new fence fixing part 42 and extends in the thickness direction of the fence 10. The existing fence fixing portion 41 includes a fixing portion 411 that abuts against one side of the vertical reinforcement 22 in the thickness direction of the fence 10, a sub-plate 412 that is arranged opposite the fixing portion 411 and abuts against the other side of the vertical reinforcement 22 in the thickness direction of the fence 10, a plurality of screws 413 that fix the vertical reinforcement 22 while sandwiching it between the fixing portion 411 and the sub-plate 412, a fixing hole 414 that can fix the fixing portion 411 and the sub-plate 412 with one of the plurality of screws 413, and a fixing position change portion 415 that can change the fixing position of the other of the plurality of screws 413. The existing fence 2 and the new fence 3 can be connected by the existing fence fixing portion 41, the new fence fixing portion 42, and the connecting portion 43, so that the existing fence 2 and the new fence 3 can be connected and the fence 10 can be installed without removing or partially replacing the existing fence 2. Furthermore, because the existing fence fixing part 41 has the fixing position changing part 415, it is possible to attach the existing fence fixing part 41 to the existing fence 2 regardless of the pitch of the vertical bars 22 of the existing fence 2. Therefore, regardless of the pitch of the vertical bars 22 of the existing fence 2, it is possible to attach the new fence 3 while the existing fence 2 remains in place.

[0030] According to the first embodiment, the vertical reinforcement fixing member is formed by a plurality of screws 413, and the fixing position changing part 415 is formed by a plurality of through holes 415a, 415b, 415c, and 415d that are spaced apart from each other and that are arranged at intervals from the fixing hole 414 in the left-right direction of the fence 10. By arranging the plurality of through holes 415a, 415b, 415c, and 415d, if a vertical reinforcement 22 is positioned at a position where a screw 413 is to be fastened, it is possible to easily avoid the vertical reinforcement 22 by simply shifting the through holes 415a and 415b that fasten the screw 413 and the through holes 415c and 415d behind them.

[0031] According to the first embodiment, the fixing portion 411 is formed in a generally U-shape when viewed from the front, and when fixed to the existing fence 2, includes a first fixing surface 4111, a plate-like surface extending in the left-right direction at the top, a second fixing surface 4112, a plate-like surface extending in the left-right direction at the bottom, and a vertical fixing surface 4113 that vertically connects the first fixing surface 4111 and the second fixing surface 4112. The vertical fixing surface 4113 includes a cutout portion 4114 that is partially cut out to allow the fixing portion 4 to avoid the horizontal bars 23. The formation of the cutout portion 4114 makes it possible to fix the connecting portion 4 while avoiding the horizontal bars 23. This makes it easier to fix the connecting portion 4 in the desired position, regardless of the pitch of the horizontal bars 23. Furthermore, by arranging the horizontal reinforcement 23 in the cutout 4114 formed in the vertical fixing surface 4113, the horizontal reinforcement 23 engages with the vertical fixing surface 4113, making the fixing portion 411 less likely to slip, and improving the fixing strength of the fixing portion 411.

[0032] According to the first embodiment, the fence 10 is configured to include claws 4115 that are disposed on the vertical fixing surfaces 4113 and protrude toward the other side in the thickness direction of the fence 10 so as to surround the vertical reinforcement bars 22. The claws 4115 define the left-right position of the vertical reinforcement bars 22 on the back surface (the surface on the other side in the thickness direction) of the vertical fixing surfaces 4113. Therefore, the connecting parts 4 are less likely to move relative to the vertical reinforcement bars 22 while fastened with the screws 413, making the fixing work easier and improving workability.

[0033] According to the first embodiment, the new fence fixing portion 42 and the connecting portion 43 each include a slit hole 5 that extends vertically. The new fence 3 is connected to the new fence fixing portion 42 and the connecting portion 43 with a cable tie 6 that passes through the slit hole 5 and engages with the end of the new fence 3, and is then attached to the existing fence 2 via the connecting portion 43. By passing the cable tie 6 through the slit hole 5, the existing fence 2 and the connecting portion 4 can be connected, and the existing fence 2 can be attached to the new fence 3 via the connecting portion 4. This eliminates the need to drill holes in the existing fence 2 with an electric drill or use large tools for installation, improving workability.

[0034] The present disclosure is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope of achieving the object of the present disclosure are included in the present disclosure. In a fence mounting structure 1A of a second embodiment shown in FIG. 5, a fence 10A is configured by placing a new fence 3 inside the site where an existing fence 2 is to be installed. The front side of FIG. 5 represents the outside of the site, and the back side represents the inside of the site. As shown in FIGS. 6 and 7, an existing fence fixing portion 41 is placed on the inside surface of the site of the existing fence 2. The vertical reinforcement bars 22 are arranged relative to the existing fence fixing portion 41 so as to be surrounded by the connecting portion 43, fixing portion 411, sub-plate 412, and claw portion 4115, and are fixed by screws 413 passing through fixing holes 414. The screws 413 are fixed through through holes 415a, 415b, 415c, and 415d of the fixing position change portion 415. At this time, unlike the first embodiment, the screw 413 is fastened so that the shaft head 413b faces inside the premises and the end of the shaft portion 413a faces outside the premises. The new fence 3 is abutted against the outer surface of the new fence fixing portion 42 and fixed with the cable tie 6.

[0035] According to the second embodiment, the new fence 3 can be seen when looking outside the site from a building on the site, improving the scenery seen by people on the site. In addition, the support posts 21 of the existing fence 2 are positioned between the existing fence 2 and the new fence 3. If the new fence 3 is installed avoiding the support posts 21, the new fence 3 will be positioned further inward than the existing fence 2. However, because the new fence 3 is located within the site, there is no concern that the structure will extend outside the site.

[0036] 4A, the connecting part 4 has a symmetrical shape above and below the cutout 4114. Therefore, whether the new fence 3 is placed inside or outside the site of the existing fence 2, the same connecting part 4 can be used by turning it upside down.

[0037] Furthermore, the fixing portion 411 of the connecting portion 4 has a first fixing surface 4111 and a second fixing surface 4112. When placing the connecting portions 4 on both the left and right ends of the new fence 3, the connecting portion 4 fixed to the left side and the connecting portion 4 fixed to the right side are fixed at 180-degree inverted positions. By placing a sub-plate 412 on the back side of the first fixing surface 4111 on one side of the fixing portions 411 of the left and right connecting portions 4 and on the back side of the second fixing surface 4112 on the other side and fastening them with screws 413, the height at which the connecting portions 4 are fixed to the existing fence 2 can be made the same on the left and right sides.

[0038] Furthermore, for ease of explanation, Figures 1 and 5 show only one new fence 3 installed, but in reality, it is conceivable that multiple new fences 3 will be connected in the left-right direction, as shown in Figure 8. In this case, the connecting parts 4 of adjacent new fences 3 should be arranged so that they face opposite each other. Because the connecting parts 43 of the connecting parts 4 are thin plates, even when the connecting parts 43 are brought into contact with each other, large gaps are unlikely to form between adjacent new fences 3.

[0039] In the above embodiment, the fixing position change portion 415 is configured by two lined up through holes 415a, 415b and two lined up through holes 415c, 415d in each of the fixing portion 411 and the sub-plate 412. However, the fixing position change portion is not limited to two through holes as long as it can change its position to a position spaced apart in the left-right direction from the fixing hole 414 and can be fixed while avoiding the vertical stripes. The number of through holes may be three or more. The through holes may be formed as elongated holes that are long in the left-right direction and may be fixed using screws and nuts in a location where there are no vertical stripes.

[0040] In the above embodiment, the multiple screws 413 are fastened by penetrating the fixing portion 411 and the sub-plate 412, but this is not limiting. For example, the fixing position change portion 415 may be configured as a recessed portion with a female thread formed therein, and the screws may be fastened in this recessed portion. [Explanation of symbols]

[0041] 1 fence mounting structure, 2 existing fence, 2 new fence, 5 slit hole, 6 cable tie, 10 fence, 22 vertical reinforcement, 23 horizontal reinforcement, 41 existing fence fixing portion, 42 new fence fixing portion, 43 connecting portion, 411 fixing portion, 412 sub-plate, 413 multiple screws, 414 fixing hole, 415 fixing position change portion, 415a, 415b, 415c, 415d multiple through holes, 4111 first fixing surface, 4112 second fixing surface, 4113 vertical fixing surface, 4114 notch portion, 4115 claw portion

Claims

1. A fence mounting structure for a fence that is configured by attaching a new fence to an existing fence in which vertical and horizontal bars are arranged in a lattice pattern, an existing fence fixing portion fixed to the existing fence; a new fence fixing portion fixed to the new fence; a connecting portion that connects the existing fence fixing portion and the new fence fixing portion and extends in the thickness direction of the fence, The existing fence fixing portion is a fixing portion that abuts against one side of the vertical reinforcement in the thickness direction of the fence; a sub-plate disposed opposite the fixed portion and abutting against the other side of the vertical reinforcement in the thickness direction of the fence; A plurality of vertical reinforcement fixing members that fix the vertical reinforcement in a sandwiched state between the fixing portion and the sub-plate; a fixing hole that can fix the fixing portion and the sub-plate by one of the plurality of vertical reinforcement fixing members; a fixing position changing unit that can change the fixing positions of other vertical reinforcing bar fixing members that are located to the left and right of the fence relative to one of the vertical reinforcing bar fixing members by selecting from a plurality of positions.

2. the plurality of vertical reinforcing bar fixing members are screws, 2. The fence mounting structure according to claim 1, wherein the fixing position change portion is a plurality of through holes spaced apart from each other and arranged at intervals from the fixing hole in the left-right direction of the fence.

3. The fixing portion is formed in a substantially U-shape when viewed from the front, When fixed to the existing fence, the fence has a first fixing surface in the shape of a plate extending in the left-right direction at an upper part, a second fixing surface in the shape of a plate extending in the left-right direction at a lower part, and a vertical fixing surface connecting the first fixing surface and the second fixing surface in the up-down direction, 3. The fence mounting structure according to claim 1, wherein the vertical fixing surface has a cutout portion that is partially cut out so as to be able to avoid the horizontal reinforcement.

4. 4. The fence mounting structure according to claim 3, further comprising a claw portion disposed on the vertical fixing surface and projecting toward the other side in the thickness direction of the fence so as to surround the vertical reinforcement.

5. The new fence fixing portion and the connecting portion each have a slit hole extending long in the vertical direction, A fence mounting structure as described in any one of claims 1 to 4, wherein the new fence is connected to the new fence fixing portion and the connecting portion by a cable tie that passes through the slit hole and engages with the end of the new fence, and is attached to the existing fence via the connecting portion.

Images