Overturning fence and method for assembling overturning fence

Abstract

To provide an overturning fence and a method for assembling the overturning fence, capable of immediately folding an upper panel at the time of disaster or the like to bring the total height of the fence to a predetermined height or less and easily changing a direction of folding the upper panel.SOLUTION: An overturning fence comprises a lower panel fixed to a plurality of struts, and an upper panel arranged above the lower panel, wherein the lower panel and the upper panel are constituted of a plurality of vertical wire rods and a plurality of horizontal wire rods arranged in a lattice shape, and the upper panel is rotatably attached to the horizontal wire rod arranged at the uppermost end of the lower panel via a vertical connecting member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fence constructed along a property boundary, and in particular to a collapsible fence whose upper panel can be folded, and a method for assembling a collapsible fence. [Background technology]

[0002] A commonly known fence constructed along the boundary of a property is a mesh fence, which is constructed by suspending panels made of vertical and horizontal steel wires welded together in a grid pattern between a number of posts erected at intervals on the ground. Such mesh fences are sometimes used along the boundary of the ground floor of buildings, such as multi-story parking garages.

[0003] Fences installed on the boundaries of ground floors of buildings must be set at a certain height for safety and crime prevention reasons, so that they cannot be easily climbed over.

[0004] On the other hand, the Fire Service Act stipulates that the height of such fences must be set below a certain height so as not to hinder evacuation or firefighting activities.

[0005] Therefore, there is a need for a foldable fence that can maintain a sufficient height required for safety during normal use and can be adjusted to a height that complies with Fire Service Act regulations in the event of a disaster.

[0006] For example, Patent Document 1 describes the structure of a folding fence that includes a lower panel that is fixed between multiple posts erected on the ground, an upper panel that is detachably attached to the posts and is foldable relative to the lower panel, and an elastically deformable plate-like member that connects the upper panel and the lower panel. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2023-67675 Summary of the Invention [Problem to be solved by the invention]

[0008] The folding fence shown in Patent Document 1 has an upper panel and a lower panel connected by a plate-like member attached to either the front or rear side, and the upper panel can be folded toward the lower panel by deforming the plate-like member.

[0009] However, the folding fence shown in Patent Document 1 has an upper panel that is bolted to the support posts via mounting members, and the upper panel cannot be folded up instantly. For this reason, conventional folding fences are not suitable for use as fences installed on the ground floor of a building, where the upper panel needs to be folded up instantly to a height below a certain level in the event of a disaster or other such event.

[0010] Furthermore, the folding fence shown in Patent Document 1 has a structure in which the upper panel can only be folded in one direction, making it difficult to change the folding direction to suit the conditions at the installation site. As a result, conventional folding fences require the preparation of multiple types of components to suit each folding direction, which increases manufacturing costs and makes parts management complicated.

[0011] Therefore, the present invention has been made in consideration of the above matters, and its objective is to provide a foldable fence and a method for assembling a foldable fence that allows the upper panel to be instantly folded in the event of a disaster, etc., to reduce the overall height of the fence to a predetermined height or less, and that allows the direction in which the upper panel is folded to be easily changed. [Means for solving the problem]

[0012] The present invention has been made to achieve the above object and has the following features.

[0013] The foldable fence of the present invention comprises a lower panel fixed to a plurality of posts and an upper panel arranged above the lower panel, wherein the lower panel and the upper panel are composed of a plurality of vertical wires and a plurality of horizontal wires arranged in a grid pattern, and the upper panel is rotatably attached to the horizontal wire arranged at the top end of the lower panel via upper and lower connecting members.

[0014] In the folding fence according to the present invention, it is preferable to provide a panel stopper that is attached to the support post so that it can be moved and adjusted in the depth direction, and the panel stopper has a panel pressing surface that presses the panel surface of the upper panel.

[0015] In the folding fence according to the present invention, it is preferable that the upper panel is provided with a round drop fitting that fits into the support post.

[0016] The method for assembling a foldable fence according to the present invention is a method for assembling a foldable fence in which an upper panel is rotatably attached to a lower panel, and is characterized in that the fence is assembled by the following steps: an upper panel temporary placement process in which the upper panel is temporarily placed in a predetermined position above the lower panel via an assembly auxiliary member; a round drop fitting attachment process in which a round drop fitting is attached to the upper panel while the upper panel is in a temporarily placed state; and an upper and lower panel connection process in which the lower panel and the upper panel are connected while the upper panel is hanging from a support via the round drop fitting.

[0017] In the method of assembling a foldable fence according to the present invention, it is preferable that the assembly auxiliary member has an approximately H-shaped cross section with grooves formed at the upper and lower ends, the groove formed at the upper end into which the upper panel can be inserted, and the groove formed at the lower end into which the lower panel can be inserted.

[0018] The above summary of the invention does not list all of the features necessary for the present invention, and subcombinations of these features may also constitute inventions. [Effects of the Invention]

[0019] According to the folding fence of the present invention, in the event of a disaster or the like, the upper panel can be instantly folded to change the overall height of the fence to a predetermined height, thereby ensuring compliance with the Fire Service Act.

[0020] Furthermore, with the folding fence of the present invention, the folding direction of the upper panel can be easily changed without changing any components, which eliminates the need to prepare multiple types of components in advance, reducing manufacturing costs and facilitating parts management.

[0021] Furthermore, according to the method for assembling a foldable fence of the present invention, when installing the upper panel, the upper panel can be temporarily placed above the lower panel to allow for positioning and attachment of accessories, etc., making it possible for even a single worker to easily assemble the fence. [Brief explanation of the drawings]

[0022] [Figure 1] A front view showing the fence of this embodiment. [Figure 2] A side view showing the fence of this embodiment. [Figure 3] FIG. 10 is a perspective view showing a state in which a lower panel of the fence according to the present embodiment is attached; [Figure 4] Enlarged view of part B in Figure 2 [Figure 5] FIG. 1 is a perspective view showing a connecting fitting for the fence of this embodiment. [Figure 6] FIG. 1 is a side view showing a state in which the upper panel of the fence of this embodiment is folded. [Figure 7] Enlarged view of part A in Figure 1 [Figure 8] CC cross section of Figure 7 [Figure 9] DD cross section of Figure 7 [Figure 10] A flowchart showing a method for assembling a fence according to this embodiment. [Figure 11] FIG. 1 is a perspective view showing an assembly auxiliary member according to the present embodiment; [Figure 12] FIG. 10 is a perspective view showing an attached state of an assembly auxiliary member according to the embodiment; [Figure 13] FIG. 10 is a front view showing an example of the fence of the present embodiment that is erected when the installation surface is a slope. DETAILED DESCRIPTION OF THE INVENTION

[0023] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0024] FIG. 1 is a front view of the fence of this embodiment, FIG. 2 is a side view of the fence of this embodiment, FIG. 3 is a perspective view showing the attached state of the lower panel of the fence of this embodiment, FIG. 4 is an enlarged view of portion B of FIG. 2, FIG. 5 is a perspective view showing a connecting fitting of the fence of this embodiment, FIG. 6 is a side view showing the folded state of the upper panel of the fence of this embodiment, FIG. 7 is an enlarged view of portion A of FIG. 1, FIG. 8 is a cross-sectional view taken along line CC of FIG. 7, and FIG. 9 is a cross-sectional view taken along line DD of FIG. 7. In this specification, the height direction and width direction of the fence are defined as the directions of the arrows shown in FIG. 1. In this specification, the depth direction is defined as the direction perpendicular to the panel surface of the lower panel 20 (described later) and as the direction of the arrow shown in FIG. 2. In this specification, the front side and rear side in the depth direction are defined as the directions of the arrows shown in FIG. 2.

[0025] As shown in FIGS. 1 and 2, the fence 1 according to this embodiment includes a post 10, a lower panel 20, and an upper panel 30.

[0026] The posts 10 are formed, for example, from hollow steel pipes having a rectangular cross section. A plurality of the posts 10 are installed at intervals along the boundary of the site where the fence 1 is to be installed.

[0027] 2, the posts 10 are fixed to beam members 3 installed along the boundary of the property via gusset plates 2. The beam members 3 are installed at a predetermined height by a plurality of leg members 4 erected on the floor surface or the like (hereinafter referred to as the installation surface) of the building on which the fence 1 is to be installed.

[0028] The support 10 is not limited to a hollow steel pipe with a rectangular cross section, but may be a pipe with a polygonal cross section or a round pipe, or may be made of metal such as a stainless steel alloy or an aluminum alloy. The method of erecting the support 10 is not limited to a method of fixing it to the beam member 3 via the gusset plate 2, but it may be erected by any known method, such as a method of directly burying the lower end of the support 10 in a foundation such as mortar, or a method of fixing a base plate to the installation surface and erecting it.

[0029] The support pole 10 is provided with a panel stopper 60 that determines the folding direction of the upper panel 30. The panel stopper 60 is placed within the height range at which the upper panel 30 is placed, and is preferably placed near the upper end of the support pole 10. Details of the panel stopper 60 will be described later.

[0030] Furthermore, pin holes 11 are formed in the support posts 10, opening in a direction facing the adjacent support posts 10. The pin holes 11 are formed to a size that allows slide pins 42 of round drop fittings 40, which will be described later, to fit in. The pin holes 11 are positioned within the height range at which the upper panel 30 is arranged, and are preferably positioned near the upper ends of the support posts 10. Note that in this embodiment, the pin holes 11 are described as being positioned above the panel stoppers 60, but the position at which the pin holes 11 are positioned is not limited to this, and they may also be positioned below the panel stoppers 60.

[0031] The lower panel 20 is formed by arranging a plurality of vertical wires 21 and a plurality of horizontal wires 22 in a grid pattern. The vertical wires 21 and horizontal wires 22 are, for example, made of iron wire, and the intersections of the vertical wires 21 and horizontal wires 22 arranged in a grid pattern are connected by welding. To prevent corrosion due to rust and the like, the vertical wires 21 and horizontal wires 22 are preferably subjected to zinc plating or electrostatic powder coating using a polyester resin as a base paint. In this specification, the planar portion formed by arranging the vertical wires 21 and horizontal wires 22 in a grid pattern is defined as the panel surface of the lower panel 20.

[0032] The lower panel 20 is positioned so that a gap of a predetermined height is formed between it and the installation surface. As shown in FIG. 2, a lower furring strip 23 is formed at the lower end of the lower panel 20. As an example, the vertical wires 21 of the lower furring strip 23 are inclined toward the front in the depth direction, and the tips of the inclined vertical wires 21 are bent toward the rear in the depth direction so that they are approximately parallel to the installation surface. Note that the shape of the lower furring strip 23 is not limited to this shape and may be appropriately set, for example, to a ring shape when viewed in the width direction. Furthermore, horizontal wires 22 are attached to the vertical wires 21 that form the lower furring strip 23 by welding, in the same way as the panel surface of the lower panel 20.

[0033] The lower panel 20 is preferably formed so that the height from the installation surface to the upper end is 1200 mm or less. The lower panel 20 is also arranged across the entire width to correspond to the boundary of the property where the fence 1 is to be installed. The lower panel 20 may be formed as a single piece in the width direction, or multiple lower panels 20 divided into predetermined widths may be connected and installed. When connecting multiple lower panels 20, adjacent lower panels 20 can be connected together using fixing metal fittings of a conventionally known structure.

[0034] As shown in FIG. 3 , the lower panel 20 is fixed to the support pillar by, for example, a hook bolt 12. The hook bolt has a hook portion 12a bent into a substantially J-shape at one longitudinal end and a bolt shank 12b having a threaded portion at the other longitudinal end. The hook portion 12a of the hook bolt engages with the horizontal wire 22 of the lower panel 20 on the front side of the support pillar 10 in the depth direction, and the bolt shank 12b penetrates the support pillar 10 in the depth direction. When the bolt shank 12b protruding from the back side of the support pillar 10 is tightened with a nut or the like, the hook portion 12a of the hook bolt 12 restrains the horizontal wire 22. In this way, the lower panel 20 is fixed to the support pillar 10.

[0035] Like the lower panel 20, the upper panel 30 is formed by arranging a plurality of vertical wires 31 and a plurality of horizontal wires 32 in a grid pattern. The vertical wires 31 and horizontal wires 32 are, for example, made of iron wire, and the intersections of the vertical wires 31 and horizontal wires 32 arranged in a grid pattern are connected by welding. To prevent corrosion due to rust and the like, the vertical wires 31 and horizontal wires 32 are preferably subjected to zinc plating or electrostatic powder coating using a polyester resin as a base paint. In this specification, the planar portion formed by arranging the vertical wires 31 and horizontal wires 32 in a grid pattern is defined as the panel surface of the upper panel 30.

[0036] The upper panel 30 is positioned so that a gap S of a predetermined height is formed between it and the upper end of the lower panel 20. Preferably, the upper end of the upper panel 30 is formed at a height corresponding to the upper end of the support 10. The upper panel 30 is also formed so that its width corresponds to the distance between adjacent support 10, and a gap of a predetermined width is formed between each support 10.

[0037] As shown in Figure 2, an upper furring strip 33 is formed at the upper end of the upper panel 30. As an example, the upper furring strip 33 is formed by bending the vertical wire material 31 into a ring shape when viewed in the width direction. The shape of the upper furring strip 33 is not limited to this ring shape and may be appropriately set, for example, to a rectangular shape when viewed in the width direction. Furthermore, horizontal wire materials 32 are attached to the vertical wire material 31 that forms the upper furring strip 33 by welding, in the same way as the panel surface of the upper panel 30.

[0038] 1, the upper panel 30 is connected to the lower panel 20 via a plurality of upper and lower connecting members 50. As an example, the upper and lower connecting members 50 are preferably attached at four locations in total, two at both widthwise ends of the upper panel 30 and two at the middle portion. Furthermore, it is preferable that the upper and lower connecting members 50 are attached so that the intervals between each other are approximately the same.

[0039] As shown in Figure 4, the upper and lower connecting member 50 comprises a connecting fitting 51 that is arranged to bridge the upper end of the lower panel 20 and the lower end of the upper panel 30 and engages with the lower panel 20, and a retaining fitting 52 that clamps the upper panel 30 together with the connecting fitting 51.

[0040] 4 and 5, the connecting fitting 51 is a plate-like member with a generally J-shaped cross section. The connecting fitting 51 is made, for example, of a steel plate, and is preferably zinc-plated or electrostatically powder-coated with a polyester resin base paint to prevent corrosion due to rust and the like. The connecting fitting 51 has a long piece, a fitting body 51a, and an engaging portion 51b formed by folding back one end of the fitting body 51a.

[0041] The metal fitting body 51a is formed to have a length sufficient to bridge the upper end of the lower panel 20 and the lower end of the upper panel 30 when the vertical connecting member 50 is attached. The metal fitting body 51a also has a plurality of screw holes 51c, 51d formed in it at intervals in the longitudinal direction. It is also preferable that a rubber plate 53 of a predetermined thickness be attached to the surface of the metal fitting body 51a that faces the engaging portion 51b.

[0042] As shown in FIG. 4, when the vertical connecting member 50 is attached, the engaging portion 51b engages with the horizontal wire 22 (hereinafter referred to as the upper horizontal wire 22a) located at the uppermost end of the lower panel 20. The engagement between the engaging portion 51b and the upper horizontal wire 22a allows the vertical connecting member 50 to be attached rotatably around the upper horizontal wire 22a. A bolt-through hole 51e is formed in the engaging portion 51b at a position corresponding to the screw hole 51d formed in the metal fitting main body 51a. The bolt-through hole 51e is formed as an elongated hole extending in the longitudinal direction of the metal fitting main body 51a. Furthermore, with the engaging portion 51b engaged with the upper horizontal wire 22a of the lower panel 20, a bolt 54 is attached to the metal fitting main body 51a, passing through the bolt-through hole 51e. At this time, the engaging portion 51b may be bent toward the metal fitting main body 51a by fastening the bolt 54.

[0043] As shown in FIG. 5, the rubber plate 53 is preferably formed in a generally U-shape to avoid the screw hole 51d. As shown in FIG. 4, the rubber plate 53 is preferably positioned so that, when the upper and lower connecting members 50 are attached, it abuts against the upper horizontal wire 22a and the tip of the engaging portion 51b bent by tightening the bolt 54. With this rubber plate 53, the upper horizontal wire 22a is attached so as to compress the rubber plate 53. Therefore, no gaps are formed between the upper horizontal wire 22a and the metal fitting main body 51a or between the upper horizontal wire 22a and the engaging portion 51b, preventing rattle of the connecting fitting 51 attached to the upper horizontal wire 22a. Furthermore, since the tip of the engaging portion 51b abuts against the rubber plate 53, tightening of the engaging portion 51b with the bolt 54 does not damage the metal fitting main body 51a, and the elastic force of the rubber plate 53 prevents the bolt 54 from loosening.

[0044] As shown in Fig. 4, the clamping fittings 52 are plate-like members whose both longitudinal ends are formed into a generally C-shaped cross section. The clamping fittings 52 are fastened to the connecting fittings 51 with bolts 54, and clamp the horizontal wires 32 located at the lower end of the upper panel 30. The clamping fittings 52 are made of, for example, a steel plate, and are preferably zinc-plated or electrostatically powder-coated with a polyester resin-based paint to prevent corrosion due to rust and the like.

[0045] The retaining metal fitting 52 has a flat portion 52a that abuts against the metal fitting body 51a of the connecting metal fitting 51, and locking portions 52b, 52c that are arranged at both ends of the flat portion 52a in the longitudinal direction.

[0046] The flat portion 52a is formed with a bolt-through hole 52d that corresponds to the screw hole 51c formed in the metal fitting body 51a of the connecting metal fitting 51. The bolt-through hole 52d is formed as an elongated hole that extends in the longitudinal direction of the pressing metal fitting 52.

[0047] As shown in Figure 4, the locking portions 52b, 52c are formed at positions corresponding to the spacing between the horizontal wire 32 located at the lowest end of the upper panel 30 (hereinafter referred to as the lower horizontal wire 32a) and the horizontal wire 32 located second from the lowest end of the upper panel 30 (hereinafter referred to as the lower horizontal wire 32b). The lower horizontal wires 32a, 32b of the upper panel 30 are clamped between the locking portions 52b, 52c and the fitting body 51a of the connecting fitting 51. In this way, the retaining fitting 52 fixes the multiple lower horizontal wires 32a, 32b of the upper panel 30 to the connecting fitting 51, so that the upper and lower connecting member 50 can be attached to the upper panel 30 without rotating.

[0048] 6, such a vertical connecting member 50 allows the upper panel 30 to be rotated around the upper horizontal wire member 22a of the lower panel 20 as an axis, making it foldable. Furthermore, the engaging portion 51b is fastened to the metal fitting body 51a by a bolt 54 while the upper horizontal wire member 22a of the lower panel 20 is engaged with it. Therefore, when the upper panel 30 rotates, the engaging portion 51b disengages from the upper horizontal wire member 22a, preventing the upper panel 30 from falling.

[0049] 1 and 7, the upper panel 30 is provided with round drop fittings 40 at both widthwise ends. The round drop fittings 40 are preferably attached near the upper end of the upper panel 30.

[0050] 7 and 8, the round drop fitting 40 includes a fixing bracket 41 fixed to the upper panel 30 and a slide pin 42 slidably held by the fixing bracket 41. The round drop fitting 40 is attached so that the slide pin 42 is slidable along the width direction. The round drop fitting 40 is attached at a height where the slide pin 42 corresponds to the pin hole 11 formed in the support 10.

[0051] The slide pin 42 is movable between a fixed stop position where the tip of the slide pin 42 protrudes from the fixed bracket 41 and is fitted into the pin hole 11, and a release stop position where the tip of the slide pin 42 is retracted within the fixed bracket 41. The slide pin 42 also has a locking mechanism that enables it to be held in both the fixed stop position and the release stop position. The locking mechanism may have a conventionally known structure, and as an example, it may have a structure in which a handle portion 42a extending in a direction intersecting the sliding direction of the slide pin 42 engages with a groove formed in the fixed bracket 41. The slide pin 42 preferably includes a spring 43 that is arranged to urge the slide pin 42 toward the fixed stop position when the locking mechanism is released.

[0052] With this type of round drop fitting 40, the rotation of the upper panel 30 can be prevented and the upright state of the upper panel 30 can be maintained by fitting the slide pin 42 into the pin hole 11 of the support 10. Furthermore, when folding the upper panel 30, the slide pin 42 of the round drop fitting 40 can be moved to the release side stop position, and the upper panel 30 can be easily rotated and folded.

[0053] Furthermore, since the slide pin 42 is biased toward the fixed stop position by the spring 43, even if the locking mechanism of the slide pin 42 is accidentally released, the slide pin 42 will not immediately be released from the engagement with the pin hole 11. This makes it possible to prevent the upper panel 30 from being accidentally knocked over, resulting in a structure with excellent safety.

[0054] In this way, the fence 1 according to this embodiment allows the upper panel 30 to be folded using the upper horizontal wire 22a of the lower panel 20 as a rotation axis via the upper and lower connecting members 50. Furthermore, because an appropriate gap S is formed between the upper panel 30 and the lower panel 20, the upper panel 30 can be rotated smoothly, and a uniform gap S in the width direction is maintained, resulting in a good appearance. Furthermore, the upper panel 30 can be folded in either the front or rear direction in the depth direction. If the folding direction needs to be restricted to one of the depth directions, a panel stopper 60 is installed on the support 10.

[0055] 7 and 9, the panel stopper 60 is a plate-like member formed in a substantially L-shape. The panel stopper 60 is made of, for example, a steel plate, and is preferably zinc-plated or electrostatically powder-coated with a polyester resin base paint to prevent corrosion due to rust, etc. The panel stopper 60 has an attachment surface 61 that abuts against the support 10, and a panel pressing surface 62 that extends in the width direction.

[0056] The mounting surface 61 has a long hole 61a formed to extend in the depth direction when the panel stopper 60 is mounted to the support 10. The panel stopper 60 is mounted to the support 10 with a mounting bolt that passes through the long hole 61a. The panel stopper 60 is mounted so that its position in the depth direction can be adjusted using the long hole 61a. The panel stoppers 60 are mounted independently on the left and right sides of the support 10 in the width direction. Therefore, the mounting positions in the depth direction of the panel stoppers 60 located on the left and right sides of the support 10 can be changed for each panel stopper 60.

[0057] 9, the panel stopper 60 may be attached by a mounting bolt that penetrates the support 10 in the width direction. Two panel stoppers 60 arranged on the left and right sides of the support 10 in the width direction may be fastened together and fixed by such a mounting bolt.

[0058] The panel pressing surface 62 is formed to a size that overlaps in the depth direction with at least one vertical wire 31 of the upper panel 30 when the panel stopper 60 is attached to the support 10. The panel pressing surface 62 is also located on either the front side or the back side of the upper panel 30 in the depth direction.

[0059] When setting the upper panel 30 to be foldable toward the rear side, the attachment position of the panel stopper 60 in the depth direction is adjusted, and the panel stopper 60 is attached so that the panel pressing surface 62 is positioned on the front side of the upper panel 30. Conversely, when setting the upper panel 30 to be foldable toward the front side, the panel stopper 60 is attached so that the panel pressing surface 62 is positioned on the rear side of the upper panel 30.

[0060] Thus, with the fence 1 according to this embodiment, the mounting position of the panel stopper 60 can be adjusted in the depth direction, making it easy to determine the rotation direction of the upper panel 30. Furthermore, with the fence 1 according to this embodiment, rotation of the upper panel 30 in the direction in which the panel pressing surface 62 is disposed can be reliably restricted, preventing the upper panel 30 from falling in the wrong direction, resulting in a structure with excellent safety.

[0061] Next, we will explain how to assemble such a fence 1. Figure 10 is a flowchart showing the method for assembling the fence according to this embodiment.

[0062] First, in step S1, a support 10 is erected on a predetermined installation surface. At this time, as shown in Fig. 2, when erecting the support 10 using a gusset plate 2, a plurality of leg members 4 are erected in advance at intervals on the installation surface. The leg members 4 can be erected by burying them in a foundation such as mortar. Then, beam members 3 are spanned and fixed across the plurality of leg members 4 erected at intervals, and gusset plates 2 are attached to the fixed beam members 3 at predetermined intervals.

[0063] When attaching the support 10 to the gusset plate 2, it can be fixed with a bolt or the like that penetrates the support 10 in the width direction. The support 10 is fixed so that the pinhole 11 faces the adjacent support 10. The support 10 may be erected by directly burying the lower end of the support 10 in a foundation such as mortar, or by fixing a base plate to the installation surface. In this embodiment, the process in step S1 is defined as the support erection process.

[0064] Next, in step S2, the lower panel 20 is attached to the multiple upright supports 10. First, the lower panel 20 is pressed against the support 10 to determine the attachment position of the lower panel 20. Then, as shown in FIG. 3, the hook portion 12a of the hook bolt 12 is engaged with the horizontal wire 22 of the lower panel 20, and the bolt shank 12b of the hook bolt 12 is inserted into the support 10 in the depth direction. The vertical wire 21 of the lower panel 20 is fixed to the support 10 by tightening the threaded portion of the bolt shank 12b protruding from the back side of the support 10 with a nut or the like. Note that multiple hook bolts 12 may be attached to the support 10 at predetermined intervals in the height direction. In this embodiment, the process in step S2 is defined as a lower panel attachment process.

[0065] Next, in step S3, the upper panel 30 is temporarily placed above the fixed lower panel 20 and positioned in an appropriate position. To temporarily place the upper panel 30, an assembly auxiliary member 90 as shown in FIG. 11 is used.

[0066] The assembly auxiliary member 90 is a substantially rectangular plate-like member, and the cross section of the long side, which is the end face in the width direction, is formed into a substantially H-shape. Groove portions 91 are formed on both end faces of the short side, which is the end face in the height direction of the assembly auxiliary member 90. The groove portions 91 have a depth along the long side and are formed to extend along the short side. The assembly auxiliary member 90 is made of a resin material, for example, polypropylene.

[0067] The groove width of the groove 91 of the assembly aid member 90 is slightly larger than the overlapping thickness of the vertical wires 21 and horizontal wires 22 of the lower panel 20 and the overlapping thickness of the vertical wires 31 and horizontal wires 32 of the upper panel 30. The groove depth of the groove 91 of the assembly aid member 90 is deeper than the distance between the upper horizontal wire 22a located at the top end of the lower panel 20 and the second horizontal wire 22 from the top, and the distance between the lower horizontal wire 32a located at the bottom end of the upper panel 30 and the second lower horizontal wire 32b from the bottom. In other words, the groove 91 formed in the lower part of the assembly aid member 90 is formed so that multiple horizontal wires 22 of the lower panel 20 can be inserted therein, and the groove 91 formed in the upper part of the assembly aid member 90 is formed so that multiple horizontal wires 32 of the upper panel 30 can be inserted therein.

[0068] In addition, it is preferable that the distance between the bottom surfaces of the grooves 91, 91 is formed to a size corresponding to the gap S between the upper end of the lower panel 20 and the lower end of the upper panel 30.

[0069] To position the upper panel 30, an assembly auxiliary member 90 is attached to the upper end of the lower panel 20, as shown in Figure 12. The assembly auxiliary member 90 is attached by inserting a groove 91 formed in the lower part into the lower panel 20. It is preferable to attach multiple assembly auxiliary members 90 spaced apart in the width direction.

[0070] At this time, the multiple horizontal wires 22 located at the upper end of the lower panel 20 are inserted into the grooves 91, and the assembly auxiliary member 90 is constrained in the depth direction. Therefore, the assembly auxiliary member 90 can stand on its own without rotating around the upper horizontal wire 22a located at the top end of the lower panel 20 as an axis, and will not fall even if the worker releases the assembly auxiliary member 90.

[0071] Next, the upper panel 30 is inserted into the groove 91 formed in the upper part of the assembly auxiliary member 90 attached to the lower panel 20. At this time, the multiple horizontal wires 32 located at the lower end of the upper panel 30 are inserted into the grooves 91, and the upper panel 30 is constrained in the depth direction. As a result, the upper panel 30 can stand on its own without rotating around the lower horizontal wire 32a located at the lowest end of the upper panel 30 as an axis, and will not fall even if the worker releases the upper panel 30.

[0072] In this way, by using the assembly auxiliary member 90 when attaching the upper panel 30, the upper panel 30 can be temporarily placed above the lower panel 20. Furthermore, because the gap between the bottom surfaces of the grooves 91, 91 formed at the top and bottom of the assembly auxiliary member 90 is formed to be a predetermined size, the lower panel 20 and the upper panel 30 can be temporarily placed with an appropriate size gap S formed between them, and the widthwise position of the upper panel 30 can be easily adjusted while maintaining the appropriate gap S. In this embodiment, the process in step S3 is defined as an upper panel temporary placement process.

[0073] Next, in step S4, the round drop fitting 40 is attached to the upper panel 30. The round drop fitting 40 is attached with the tip of the slide pin 42 protruding and locked in the fixed stop position. The tip of the slide pin 42 is inserted into the pin hole 11 of the support 10, and the attachment position of the round drop fitting 40 relative to the upper panel 30 is adjusted. Then, the fixing bracket 41 is fixed to the upper panel 30. By fixing the fixing bracket 41 in this manner, the round drop fitting 40 can be easily attached at an appropriate height. For example, the fixing bracket 41 can be attached by clamping the upper panel 30 in the depth direction together with an attachment plate corresponding to the fixing bracket 41. In this embodiment, the process in step S4 is defined as the round drop fitting attachment process.

[0074] Next, in step S5, the assembly auxiliary member 90 used to temporarily place the upper panel 30 is removed. To remove the assembly auxiliary member 90, first, the slide pin 42 of the round drop fitting 40 is housed within the fixing fitting 41, and the slide pin 42 is locked in the release stop position, releasing the engagement between the slide pin 42 and the pin hole 11. Next, the upper panel 30 is lifted, and the assembly auxiliary member 90 is removed. After that, the upper panel 30 is returned to its original position, and the slide pin 42 is protruded from the fixing fitting 41 and inserted into the pin hole 11. At this time, the upper panel 30 is suspended from the support 10 via the slide pin 42. In other words, an appropriate gap S can be maintained between the lower panel 20 and the upper panel 30. In this embodiment, the process in step S5 is defined as an assembly auxiliary member removal process.

[0075] Next, in step S6, the vertical connecting member 50 is attached to connect the lower panel 20 and the upper panel 30. First, the engaging portion 51b of the connecting fitting 51 is engaged with the upper horizontal wire 22a located at the uppermost end of the lower panel 20. Next, a bolt 54 is inserted through the bolt-through hole 51e of the engaging portion 51b and fastened to the threaded hole 51d formed in the fitting body 51a. Next, the lower horizontal wire 32a located at the lowermost end of the upper panel 30 and the lower horizontal wire 32b located second from the lowermost end of the upper panel 30 are clamped between the clamp 52 and the fitting body 51a of the connecting fitting 51, and the clamp 52 is fastened with the bolt 54. In this step, the upper panel 30 is suspended from the support 10 via the slide pin 42 with an appropriate gap S formed between it and the lower panel 20, so that even a single worker can easily install the vertical connecting member 50. In this embodiment, the process in step S6 is defined as a top and bottom panel connecting process.

[0076] Next, in step S7, the panel stopper 60 is attached to the support column 10. When folding the upper panel 30 so that it rotates toward the front in the depth direction, the panel stopper 60 is attached to the support column 10 so that the panel pressing surface 62 is located on the back side of the upper panel 30. Conversely, when folding the upper panel 30 so that it rotates toward the back in the depth direction, the panel stopper 60 is attached to the support column 10 so that the panel pressing surface 62 is located on the front side of the upper panel 30. In this embodiment, the process in step S7 is defined as a panel stopper attachment process. Note that this process may be omitted when the upper panel 30 is set to rotate to both sides in the depth direction.

[0077] As described above, according to the method for assembling the fence 1 of this embodiment, the assembly auxiliary member 90 allows the upper panel 30 to be temporarily placed on top of the lower panel 20, allowing even a single worker to easily position and attach the round drop fitting 40. Furthermore, according to the method for assembling the fence 1 of this embodiment, the assembly auxiliary member 90 allows an appropriate gap S to be formed between the upper panel 30 and the lower panel 20, making it easy to attach the upper and lower connecting members 50 and assemble the fence 1. Furthermore, while the assembly auxiliary member 90 has been described as being a unitary, plate-like member with a substantially H-shaped cross section, the assembly auxiliary member 90 is not limited to this configuration and may be composed of multiple parts that can be separated in the depth direction. In such a case, when removing the assembly auxiliary member 90 in step S5, the assembly auxiliary member 90 can be easily removed without lifting the upper panel 30.

[0078] In this embodiment, the fence 1 has been described as having the lower panel 20 and the upper panel 30 attached to the support posts 10 that are erected perpendicular to a flat installation surface, as shown in FIG. 1 . However, the fence 1 is not limited to this configuration. For example, as shown in FIG. 13 , the fence 1 may be configured such that the lower panel 20 and the upper panel 30 are attached to the support posts 10 that are erected at an angle to the installation surface and extend in the direction of gravity, even when the installation surface is sloped. With a fence 1 having such a configuration, a portion of the upper panel 30 may interfere with the support posts 10 when the upper panel 30 rotates. According to the fence 1 of this embodiment, the upper panel 30 is composed of vertical wires 31 and horizontal wires 32 made of iron wire. Therefore, the shape of the upper panel 30 can be adjusted by cutting the iron wire. Therefore, even if interference between the upper panel 30 and the support posts 10 is discovered at the installation site, correction can be easily performed. It is clear from the claims that such modifications and improvements are also within the technical scope of the present invention. [Explanation of symbols]

[0079] 1. Fence 2 Gusset Plates 3 Beam members 4 Leg members 10 pillars 11 Pinhole 12 Hook bolt 12a Hook part 12b Bolt shank 20 Lower Panel 21 Vertical wire 22 Horizontal wire 22a Upper horizontal wire 23 Lower furring strip 30 Upper Panel 31 Vertical wire 32 Horizontal wire 32a, 32b Lower horizontal wire 40 Round drop fittings 41 Fixing bracket 42 Slide pin 43 Handle 50 Upper and lower connecting members 51 Connecting fittings 51a Metal fittings body 51b Engagement part 51c, 51d threaded section 51e Bolt hole 52 Clamp 52a Flat part 52b, 52c Locking part 53 Rubber Plate 60 Panel stopper 61 Mounting surface 61a long hole 62 Panel pressing surface 90 Assembly auxiliary parts 91 Groove

Claims

1. A lower panel fixed to a plurality of posts and an upper panel disposed above the lower panel, The lower panel and the upper panel are configured by a plurality of vertical wire members and a plurality of horizontal wire members arranged in a lattice pattern, A foldable fence characterized in that the upper panel is rotatably attached to the horizontal wire located at the uppermost end of the lower panel via upper and lower connecting members.

2. The folding fence according to claim 1, a panel stopper attached to the support so as to be adjustable and movable in the depth direction; A foldable fence characterized in that the panel stopper has a panel pressing surface that presses the panel surface of the upper panel.

3. The folding fence according to claim 1, A foldable fence characterized in that the upper panel is equipped with a round drop fitting that fits into the support post.

4. A method for assembling a folding fence in which an upper panel is rotatably attached to a lower panel, comprising: an upper panel temporary placement step of temporarily placing the upper panel above the lower panel via an assembly auxiliary member; a round drop fitting attachment process for attaching a round drop fitting to the upper panel in a state where the upper panel is temporarily placed; A method for assembling a foldable fence, characterized in that the folding fence is assembled by an upper and lower panel connecting process, in which the lower panel and the upper panel are connected while the upper panel is hanging from the support via the round drop fitting.

5. The folding fence assembly method according to claim 4, The assembly auxiliary member has a substantially H-shaped cross section and grooves formed at the upper and lower ends thereof. the groove formed at the upper end portion allows the upper panel to be inserted; A method for assembling a folding fence, characterized in that the groove formed at the lower end allows the lower panel to be inserted.

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