Reversible gate

Abstract

To provide a lodgeable fence capable of easily bringing a panel part into a lodged state.SOLUTION: A lodgeable fence comprises a panel part arranged between the respective fixing parts, and a connection part of the panel part is pivoted to a supporting part of the respective fixing parts by a shaft part, and rotation of the panel part with the shaft part as an axis is regulated by a regulation member comprising a fastening member penetrating the connection part. Since the rotation of the panel part around the shaft part is regulated by the regulation member formed of the fastening member, the regulation and release of the rotation of the panel part can be easily performed by releasing the fastening of the fastening member and removing the regulating member, and the operation of bringing the panel part into a lodged state can be easily performed.SELECTED DRAWING: Figure 20

Description

[Technical Field]

[0001] The present invention relates to a retractable fence in which the panel parts of an erected fence can be rotated to a collapsed position. [Background technology]

[0002] Fences installed along rivers can be damaged by contact with water and driftwood and other floating debris when the river floods due to heavy rain, etc. To prevent such damage, fence configurations that allow panel-like sections to be changed from an upright position to a lying position have been studied, and various inventions have been disclosed.

[0003] For example, Patent Document 1 discloses a protective fence erected along the water's edge, such as along a riverbank or a pond, which comprises a fence body 1 formed into a rectangular shape of unit length and height by combining horizontal and vertical bars, an upper connecting rod 2 onto which legs 11 protruding from both ends of the fence body 1 are fitted so as not to be able to rotate, a lower connecting rod 3 to which the lower end of the upper connecting rod 2 is connected so as to be bendable, and a sheath pipe 4 buried in the ground and fitted into the upper connecting rod 2 and the lower connecting rod 3 so as to be able to move up and down as a unit, and the upper end of the sheath pipe 4 The structure of a retractable protective fence is shown, characterized in that a locking hole 41 is drilled near the end, and locking holes 21 and 31 of the same diameter as locking hole 41 are provided in the upper connecting rod and lower connecting rod, respectively, and a locking pin 5 is inserted through both locking holes 41 and 21, or through both locking holes 41 and 31, and has one end flexibly connected to the fence main body 1, and the other end supports a pin stopper 51 which has a head 56 of the same diameter as locking pin 5 and is rotatable about its axis. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] No. 3050193 Publication Summary of the Invention [Problem to be solved by the invention]

[0005] The folding protective fence shown in Patent Document 1 is designed so that the fence body 1 can be collapsed by bending the connecting part between the upper connecting rod 2 and the lower connecting rod 3. However, when collapsing the fence body 1, it is necessary to lift the fence body 1 so that the connecting part can be pulled out from the inside of the sheath pipe 4, which places a heavy burden on the worker, especially when the fence body 1 is heavy.

[0006] The present invention provides a folding fence whose panel section can be easily folded down. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention has the following configuration. That is, the foldable fence according to the present invention is a foldable fence comprising a plurality of fixed sections installed at intervals in the longitudinal direction, and panel sections arranged between the fixed sections and pivotally supported by the fixed sections, each of the fixed sections being formed with an installation section fixed to an installation surface and a support section extending upward from the installation section, and the panel sections being formed with connection sections that are respectively connected to the support sections of the fixed sections, the connection sections being pivotally supported by shaft sections to the support sections, and the rotation of the panel sections around the shaft sections being restricted by a restricting member made of a fastening member that passes through the connection sections. The fixing portion is provided with a contact portion, which is formed so that the outer surface of the connecting portion of the panel portion in the collapsed state comes into contact with the contact portion, and the portion where the outer surface of the connecting portion comes into contact is formed in a shape corresponding to the outer surface. It is characterized by the following. Also, The panel portion may be rotatable from an upright state to a lying state until the outer surface of the connecting portion abuts against the abutting portion.

[0008] The foldable fence of the present invention comprises multiple fixed sections that are installed at intervals in the longitudinal direction, and panel sections that are positioned between each of the fixed sections and pivotally supported by each of the fixed sections, so that the panel sections can be rotated relative to the fixed sections to switch between an upright state and a collapsed state. Further, each of the fixing portions is formed with an installation portion that is fixed to an installation surface and a support portion that extends upward from the installation portion, Connection portions are formed on the panel portion to connect to the support portions of each of the fixed portions, and these connection portions are supported on the support portions by shaft portions, so that the connection portions can be rotated around the shaft portions to switch the panel portion between an upright state and a laid-down state. In addition, the rotation of the panel part around the shaft part is restricted by a restricting member made of a fastening member, so that by releasing the fastening of the fastening member and removing the restricting member, the rotation of the panel part can be easily restricted and released, and the panel part can be easily placed in a lying position. Furthermore, since the fastening members that make up the regulating member are arranged to pass through the connection portion, when the panel portion receives an external force during use of the foldable fence and a load is placed on the connection portion, the load is placed on the edge portion of the hole-shaped portion formed to allow the regulating member to pass through, thereby reducing the load on other portions such as the outer surface of the connection portion.

[0009] Furthermore, if the regulating member is provided with a male threaded portion and a head portion that is radially larger than the male threaded portion, and the male threaded portion is screwed into place with the head portion abutting the outer surface of the connection portion, this makes it less likely that a gap will occur between the connection portion and the support portion in the area where the regulating member is positioned, and allows the panel portion to be stably attached to the fixed portion, which is preferable.

[0010] In addition, a contact portion is provided on the fixed portion, and the contact portion is formed so that the outer surface of the connecting portion of the rotating panel portion comes into contact with the contact portion. So The connecting portion is brought into contact with the contact portion to restrict the rotation of the panel portion, and the angle of the panel portion in the collapsed state can be kept within a certain range. In addition, the portion of the contact portion that the outer surface of the connecting portion contacts is formed in a shape that corresponds to the outer surface. So The load on the outer surface of the connection part due to contact with the contact part is distributed, making it difficult for deformation such as dents to occur on the outer surface of the connection part. 。

[0011] Furthermore, if multiple support parts are formed on the fixed part and each support part is pivotally supported by a connection part of a different panel part, multiple panel parts can be attached to one fixed part and the panel parts can be arranged side by side, which makes it easier to install the foldable fence and is therefore preferable. [Effects of the Invention]

[0012] According to the folding fence of the present invention, the panel portion can be easily folded down. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view showing an embodiment of a folding fence according to the present invention. FIG. [Figure 2] FIG. 2 is a front view showing the panel portion of FIG. [Figure 3] FIG. 2 is a front view showing the fixing part of FIG. [Figure 4] FIG. 4 is a right side view of FIG. 3. [Figure 5] FIG. 4 is a plan view of FIG. 3. [Figure 6] FIG. 4 is a left side view of FIG. 3. [Figure 7] FIG. 4 is a rear view of FIG. 3. [Figure 8] 4 is a front view showing a state in which the panel portion of FIG. 2 is attached to the fixing portion of FIG. 3. FIG. [Figure 9] 9 is a cross-sectional view taken along the line AA in FIG. 8. [Figure 10] 9 is an enlarged rear view showing the vicinity of the shaft portion of FIG. 8. FIG. [Figure 11] 9 is an enlarged rear view showing the vicinity of the restricting member in FIG. 8. FIG. [Figure 12] FIG. 2 is a front view showing the fixing part of FIG. [Figure 13] FIG. 13 is a left side view of FIG. 12. [Figure 14] FIG. 13 is a plan view of FIG. [Figure 15] 13 is a front view showing a state in which the panel portion of FIG. 2 is attached to the fixing portion of FIG. 12. FIG. [Figure 16] 16 is a cross-sectional view taken along the line AA in FIG. 15. [Figure 17]16 is an enlarged rear view showing the vicinity of the shaft portion of FIG. 15. FIG. [Figure 18] 16 is an enlarged rear view showing the vicinity of the restricting member in FIG. 15. FIG. [Figure 19] 10 is a diagram showing a state in which the panel section of FIG. 9 is laid down. [Figure 20] FIG. 17 is a diagram showing a state in which the panel section of FIG. 16 is laid down. DETAILED DESCRIPTION OF THE INVENTION

[0014] In the drawing, 1 is a retractable fence. The foldable fence 1 shown in Figure 1 comprises fixed sections 3 and 4 that are installed at intervals on an installation surface G, and a panel section 2 that is placed between each of the fixed sections 3 and 4. The panel section 2 is installed by connecting pillar sections 21 that are placed at both ends of the panel section 2 to each of the fixed sections 3 and 4. The fixing parts 3, 4 have fixing part 3 that supports one pillar part 21 of the panel part 2 and fixing part 4 that can support two of the pillar parts 21, and the fixing part 3 is placed and installed at the end of the folding fence 1, and the fixing part 4 is placed between multiple panel parts 2 that are arranged side by side, and the pillar parts 21 are connected to each other to support the panel parts 2, thereby forming the folding fence 1. In the following description, the left-right direction in FIG. 1 is the longitudinal direction, the up-down direction in the figure perpendicular to the longitudinal direction is the up-down direction, and the directions perpendicular to both the longitudinal direction and the up-down direction are the front-rear directions.

[0015] FIG. 2 is a front view showing the panel portion 2 of FIG. The panel section 2 has the column sections 21 formed from round steel pipes arranged at both ends in the longitudinal direction, and beam sections 26 provided to span the column sections 21. The beam portion 26 is formed in an elongated shape with a substantially circular cross section, and both ends in the longitudinal direction are connected to each of the pillar portions 21. Two beam portions 26 are arranged with a gap between them in the vertical direction, and the upper beam portion 26 is connected to the top of each pillar portion 21, and the lower beam portion 26 is connected to the bottom of each pillar portion 21. A grating section 27 is disposed between each of the beam sections 26 . The lattice portion 27 is formed in an elongated shape with a substantially circular cross section, and both ends in the upper and lower directions are connected to the beam portions 26, respectively. Twelve lattice sections 27 are arranged at equal intervals in the longitudinal direction, forming the panel section 2 into a so-called vertical lattice panel.

[0016] 3 is a front view showing the fixing part 3 of FIG. 1, FIG. 4 is a right side view of FIG. 3, FIG. 5 is a plan view of FIG. 3, FIG. 6 is a left side view of FIG. 3, and FIG. 7 is a rear view of FIG. 3. The fixed portion 3 has a rectangular plate-shaped installation portion 39 arranged at the lower end and a support portion 30 protruding upward from the upper surface of the installation portion 39, and is configured so that the lower surface of the installation portion 39 abuts against the installation surface G for installation. Specifically, as shown in Figure 5, the installation part 39 has four circular through holes 39a that penetrate in the vertical direction, and the male threaded portion of an anchor bolt B that is embedded and fixed in the installation surface G is inserted into each of these through holes 39a and a nut is screwed into it, thereby allowing the fixing part 3 to be installed on the installation surface G.

[0017] The support column 30 is formed as a long body having a generally U-shaped cross section, and includes a flat base plate 30a and flat side plate portions 30b extending vertically from both edges of the base plate 30a. The support column 30 has the base plate 30a disposed on the front side and the side plate portions 30b disposed on both sides in the longitudinal direction, and its lower end is fixed to the upper surface of the installation portion 39 by welding. The support column 30 is formed so that one of the two side plate portions 30b functions as a support portion 31 that supports the column portion 21 of the panel portion 2. In the support portion 30 shown in FIG. 3, the side plate portion 30b arranged on the right side in the drawing is provided to function as the support portion 31. The base plate portion 30a of the support portion 30 is provided to function as an abutment portion 32 against which the column portion 21 of the panel portion 2 in a laid-down state, which will be described later, abuts. The base plate portion 30a serving as the abutment portion 32 has an upper edge portion 32a formed in a concave shape recessed in an arc shape corresponding to the outer surface of the column portion 21.

[0018] 6, two circular through holes 31a and 31b are formed at intervals in the vertical direction in the side plate portion 30b that forms the support portion 31. The through hole 31a is formed and located at the top of the side plate portion 30b, and the through hole 31b is formed and located directly below the through hole 31a.

[0019] 4, the other side plate portion 30b opposite to the side plate portion 30b forming the support portion 31 has circular through holes 33a, 33b and an insertion portion 34. The through hole 33a is disposed at a position corresponding to the through hole 31a and has a larger circular shape than the through hole 31a, while the through hole 33b is disposed at a position corresponding to the through hole 31b and has a larger circular shape than the through hole 31b. The insertion portion 34 is a substantially rectangular cutout that is disposed between the through holes 33a and 33b and extends forward from the rear edge of the side plate portion 30b. That is, the insertion portion 34 is formed in the shape of a cutout that opens rearward on the opposite side from the front where the base portion 30a that functions as the abutment portion 32 is disposed.

[0020] Fig. 8 is a front view showing the state in which the panel part 2 of Fig. 2 has been attached to the fixing part 3 of Fig. 3, and Fig. 9 is a cross-sectional view taken along line AA of Fig. 8. Fig. 8 is an enlarged view of the fixing part 3 and its vicinity of the folding fence 1 of Fig. 1. In Fig. 9 and Fig. 19 described later, anchor bolts B have been omitted to simplify the drawings. The panel part 2 is provided to function as a connection part that connects the lower part of the column part 21 to the support part 31 of the fixed part 3. Specifically, a through hole (not shown) is formed in the lower part of the column part 21, through which the shaft part 5 can be inserted in the longitudinal direction, and the panel part 2 is attached to the support part 31 by the column part 21 and the shaft part 5 inserted into the through hole 31a. In addition, a through hole (not shown) is formed in the lower part of the column portion 21, which serves as the connection portion, so that the regulating member 6 can be inserted longitudinally, and the panel portion 2 is attached to the support portion 31 by the column portion 21 and the regulating member 6 inserted into the through hole 31b.

[0021] FIG. 10 is an enlarged rear view showing the vicinity of the shaft portion 5 in FIG. The shaft portion 5 includes a male screw member 51, a female screw member 52, and a spacer 53. Specifically, the male screw member 51 is formed by a hexagon bolt having a screw head 51a and a male screw portion 51b, the female screw member 52 is formed by a nut, and the spacer 53 is formed by a cylindrical metal fitting into which the male screw portion 51b can be inserted. The female screw member 52 is a so-called double nut in which two nuts are screwed onto the male screw portion 51b. The screw head 51a of the male screw member 51 and the female screw member 52 each function as a head 5a of the shaft portion 5 formed to be larger in the radial direction than the male screw portion 51b.

[0022] The shaft portion 5 has a spacer 53 inserted into the pillar portion 21 of the panel portion 2, with one end of the spacer 53 positioned near the outer surface of the pillar portion 21 and the other end positioned inside the through hole 31a of the side plate portion 30b which forms the support portion 31. The male screw member 51 has its male screw portion 51b inserted into the inside of the spacer 53 and passed through the column portion 21 and the support portion 31, and the panel portion 2 is supported on the fixed portion 3 by the shaft portion 5, in which the female screw member 52 is screwed into the male screw portion 51b protruding from the support portion 31. That is, the folding fence 1 is provided so that the panel portion 2 can rotate relative to the fixed portion 3 around the shaft portion 5 as an axis. Furthermore, the male screw portion 51b, which serves as the rotation axis, is positioned inside the spacer 53, thereby reducing friction between the support portion 31 or the column portion 21 and the axis portion 5, and enabling the panel portion 2 to be rotated with less force.

[0023] The through hole 33a of the side plate portion 30b of the fixing portion 3 is formed in a circular shape with an inner diameter larger than the radial size of the screw head 51a, and is formed so that the screw head 51a can be inserted inside. The male screw member 51 is attached by abutting the screw head 51a, which is housed inside the through hole 33a, against the outer surface of the column portion 21. That is, the shank 5 has a screw head 51a (which serves as the head portion 5a) and a female screw member 52, with the female screw member 52 abutting against the support portion 31, and the screw head 51a abutting against the column portion 21 of the panel portion 2 (which serves as the connecting portion), thereby fastening the female screw member 52 to the male screw portion 51b. By attaching the panel portion 2 to the fixing portion 3 in this manner, a gap is less likely to occur between the column portion 21 and the supporting portion 31. Specifically, if a gap S occurs in the longitudinal direction between the column portion 21 of the panel portion 2 and each side plate portion 30b of the fixing portion 3, as shown in FIG. 10 , the gap S occurs not on the side of the side plate 30b (which serves as the supporting portion 31) but between the other side plate 30b and the column portion 21. With the shank 5 fastened in this manner, a gap is less likely to occur between the column portion 21 and the supporting portion 31, and rattle and other problems are suppressed, allowing the panel portion 2 to be stably attached to the fixing portion 3.

[0024] FIG. 11 is an enlarged rear view showing the vicinity of the restricting member 6 in FIG. The restricting member 6 includes a male thread member 61 and a female thread member 62 . Specifically, the male screw member 61 is formed by a hexagon bolt having a screw head 61a and a male screw portion 61b, and the female screw member 52 is formed by a so-called wing nut. The screw head 61a and the female screw member 62 of the male screw member 61 each function as a head 6a of the restricting member 6 which is formed larger in the radial direction than the male screw portion 61b.

[0025] The restricting member 6 attaches the panel portion 2 to the fixing portion 3 by inserting the male threaded portion 61b into the through hole 31b of the column portion 21 and the support portion 31, and screwing the female threaded member 62 into the male threaded portion 61b protruding from the support portion 31. The folding fence 1 has the restricting member 6 restricting the rotation of the panel portion 2 around the shaft portion 5 as an axis.

[0026] The through hole 33b of the side plate portion 30b of the fixing portion 3 is formed in a circular shape with an inner diameter larger than the radial size of the screw head 61a, and is formed so that the screw head 61a can be inserted inside. The male screw member 61 is attached by abutting the screw head 61a, which is housed inside the through hole 33b, against the outer surface of the column portion 21. That is, the restricting member 6 has a screw head 61a (which serves as the head portion 6a) and a female screw member 62, with the female screw member 62 abutting against the support portion 31, and the screw head 61a abutting against the column portion 21 of the panel portion 2 (which serves as the connecting portion), and the female screw member 62 is screwed into the male screw portion 61b. By attaching the panel portion 2 to the fixing portion 3 in this manner, a gap is less likely to occur between the column portion 21 and the support portion 31. Specifically, if a gap S occurs in the longitudinal direction between the column portion 21 of the panel portion 2 and each side plate portion 30b of the fixing portion 3, as shown in FIG. 11 , the gap S occurs not on the side of the side plate 30b that serves as the support portion 31, but between the other side plate portion 30b and the column portion 21. With the restricting member 6 fastened in this manner, a gap is less likely to occur between the column portion 21 and the support portion 31, and rattle and other problems are suppressed, allowing the panel portion 2 to be stably attached to the fixing portion 3.

[0027] 11, in the panel part 2 attached to the fixing part 3, the beam part 26 connected to the column part 21 is arranged so as to be inserted into the insertion part 34 formed in the side plate part 30b. In other words, the insertion part 34 is formed at a position corresponding to the beam part 26.

[0028] 12 is a front view showing the fixing part 4 of FIG. 1, FIG. 13 is a left side view of FIG. 12, and FIG. 14 is a plan view of FIG. Similar to the fixed portion 3, the fixed portion 4 has a rectangular plate-shaped installation portion 49 located at the lower end and a support portion 40 protruding upward from the upper surface of the installation portion 49, and is configured so that the lower surface of the installation portion 49 abuts against the installation surface G and is installed using an anchor bolt B inserted into the through hole 49a. The support column 40 has a U-shaped cross section and includes a flat base plate 40a and flat side plate portions 40b extending vertically from both edges of the base plate 40a.

[0029] The support 40 has a rectangular upper plate 40c arranged to connect to the upper edge of the base plate 40a and each of the side plate portions 40b. The upper plate 40c is fixed to the base plate 40a and each of the side plate portions 40b by welding. The support pillar 40 has abutment portions 42 formed so as to protrude outward in the longitudinal direction from each side plate 40c. The abutment portions 42 are formed by abutting a substantially rectangular metal plate against the front surface of the base plate 40a and fixing it by welding. In addition, the upper edge portions 42a of the abutment portions 42 protruding from each side plate 40b are formed into a concave shape recessed in an arc shape corresponding to the outer surface of the pillar portion 21 of the panel 2.

[0030] 12 to 14, the support portion 40 of the fixing portion 4 is formed so that two side plate portions 40b each function as a support portion 41 that supports the support portion 21 of the panel portion 2. In other words, the fixing portion 4 is provided so that two panel portions 2 are attached to one support portion 40. As shown in Figure 13, a left side view of the fixed part 4, circular through holes 41a and 41b are formed in the side plate part 40b that forms the support part 41, one each at a distance in the vertical direction. The through hole 41a is formed and positioned at the top of the side plate part 40b, and the through hole 41b is formed and positioned directly below the through hole 41a. The through holes 41a and 41b are formed with the same size and arrangement as the through holes 31a and 31b formed in the support part 31 of the fixed part 3. Furthermore, the other side plate part 40b opposite to the side plate part 40b shown in Figure 13 has through holes 41a and 41b with the same size and arrangement.

[0031] Fig. 15 is a front view showing the state in which the panel part 2 of Fig. 2 is attached to the fixing part 4 of Fig. 12, and Fig. 16 is a cross-sectional view taken along the line AA of Fig. 15. Fig. 15 is an enlarged view of the fixing part 4 and its vicinity of the folding fence 1 of Fig. 1. Each panel portion 2 shown in Figure 15 is attached to the support portion 41 of the fixed portion 4 by a column portion 21, an axis portion 5 inserted into the through hole 41a, and a regulating member 6 inserted into the column portion 21 and the through hole 41b.

[0032] FIG. 17 is an enlarged rear view showing the vicinity of the shaft portion 5 in FIG. FIG. 17 shows the vicinity of the shaft 5 disposed on the left side of the figure, of the two shafts 5 attached to the fixed part 4 in FIG. 15 to 17 is the same as the shaft portion 5 shown in Figures 8 to 10, and includes a male threaded member 51 made of a hexagonal bolt, a female threaded member 52 constituting a double nut, and a cylindrical spacer 53. The shaft portion 5 has one end of the spacer 53 inserted into the column portion 21 positioned near the outer surface of the column portion 21, and the other end positioned inside the through-hole 41a of the side plate portion 40b that forms the support portion 41. The male screw member 51 has its male screw portion 51b inserted into the inside of the spacer 53 and passed through the column portion 21 and the support portion 41, and the female screw member 52 is screwed into the male screw portion 51b protruding from the support portion 41. The panel portion 2 is pivotally supported on the fixing portion 4 by the shaft portion 5. That is, the folding fence 1 is provided so that the panel portion 2 can rotate relative to the fixed portion 4 around the shaft portion 5 as an axis.

[0033] 17, the screw head 51a serving as the head portion 5a and the female screw member 52 are brought into contact with the column portion 21 of the panel portion 2 serving as the connecting portion and the side plate portion 40b serving as the support portion 41, respectively, and the female screw member 52 is fastened to the male screw portion 51b. By attaching the panel portion 2 to the fixing portion 4 in this manner, as in the case of attaching the panel portion 2 using the shaft portion 5 shown in FIG. 10, gaps are less likely to occur between the column portion 21 and the support portion 41, and rattles and the like are suppressed, so the panel portion 2 can be stably attached to the fixing portion 4. In addition, Figure 17 shows a configuration in which the pillar portion 21 is attached to one of the two support portions 41 formed on the fixed portion 4, but the pillar portion 21 can also be attached to the other support portion 41 using the shaft portion 5 in a similar configuration.

[0034] FIG. 18 is an enlarged rear view showing the vicinity of the restricting member 6 in FIG. The restricting member 6 shown in FIG. 18 is the same as the restricting member 6 shown in FIG. 11, and includes a male threaded member 61 made of a hexagonal bolt and a female threaded member 62 made of a wing nut. The regulating member 6 attaches the panel portion 2 to the fixed portion 4 by inserting the male thread portion 61b of the male thread member 61 through the through hole 41b of the support portion 41 and the column portion 21, and screwing the female thread member 62 into the male thread portion 61b protruding from the column portion 21. When the panel section 2 is attached to the fixing section 4, the rotation of the panel section 2 about the shaft section 5 is restricted by the restricting member 6, similar to the panel section 2 attached to the fixing section 3.

[0035] As shown in Figure 18, the regulating member 6 attached to the fixed portion 4 has a screw head 61a which serves as the head portion 6a and a female screw member 62, with the female screw member 62 abutting against the column portion 21 of the panel portion 2 which serves as the connecting portion, and the screw head 61a abutting against the support portion 41, so that the female screw member 62 is screwed into the male screw portion 61b. In this way, by attaching the panel portion 2 to the fixed portion 3 using the regulating member 6, gaps are less likely to occur between the column portion 21 and the support portion 41, as in the case of attaching the fixed portion 3 to the panel portion 2, and rattles and the like are suppressed, so that the panel portion 2 can be stably attached to the fixed portion 4. 18 shows a configuration in which the pillar 21 is attached to one of the two support parts 41 formed on the fixed part 4, but the pillar 21 can also be attached to the other support part 41 in a similar configuration using the regulating member 6. The foldable fence 1 shown in FIG. 1 has the pillars 21 of two panel parts 2 arranged in the longitudinal direction attached to each support part 41 of the fixed part 4.

[0036] The panel part 2 attached to the fixed part 3 or 4 can be made rotatable around the shaft part 5 by releasing the fastening between the male screw member 61 and the female screw member 62 of the regulating member 6 and removing it from each column part 21. The panel part 2, which rotates relative to the fixed parts 3 and 4, moves so that the part located above the shaft part 5 tilts forward, bringing it into a lying down state, and is able to rotate until the outer surface of the column part 21 abuts against the abutment part 32 and the abutment part 42. In other words, the forward tilt of the lying down panel part 2 is restricted by the abutment of the column part 21 against the abutment part 32 and the abutment part 42. The abutment portions 32 and 42 are provided so that the pillars 21 of the panel portion 2 abut against each other when the pillars 21 are moved in a direction along the underside of the installation portion 39 and the installation portion 49. In other words, the folding fence 1 is provided so that the panel portion 2 can be folded down until it is positioned approximately horizontally relative to the installation surface G.

[0037] Figure 19 is a diagram showing the state in which the panel unit 2 of Figure 9 has been laid down. The panel unit 2 shown in Figure 19 shows a state in which the restricting member 6 of Figure 9 has been removed from the column 21 and the fixed unit 3, and the panel unit 2 has been rotated around the shaft 5 as an axis until the column 21 abuts against the abutment 32 of the fixed unit 3. The restricting member 6 attached to the fixed part 3 and the column part 21 has an internally threaded member 62 formed by a wing nut, so that an operator can manually rotate it without using tools to screw the internally threaded member 62 into the externally threaded member 61 or unscrew it. In other words, the operation of placing the panel part 2 in a laid-down state and the operation of placing the panel part 2 in an upright state where it cannot rotate relative to the fixed part 3 can be easily performed.

[0038] Furthermore, the abutment portion 32 has an upper edge portion 32a formed in a concave shape recessed in an arc shape corresponding to the outer surface of the column portion 21, so that when the column portion 21 abuts against the abutment portion 32, the entire edge portion 32a comes into contact with the column portion 21. By abutting the abutment portion 32 in this way, damage such as scratches on the outer surface of the column portion 21 caused by force being concentrated in one area is suppressed.

[0039] FIG. 20 is a view showing the state in which the panel section 2 of FIG. 16 is laid down. The panel part 2 shown in Figure 20 shows a state in which the regulating member 6 in Figure 16 has been removed from the column part 21 and the fixed part 4, and the panel part 2 has been rotated around the axis part 5 as an axis, and fallen down until the column part 21 abuts against the abutment part 42 of the fixed part 4. As with the regulating member 6 attached to the fixed portion 3, the regulating member 6 attached to the fixed portion 4 can be easily operated by an operator by manually rotating the female screw member 62 formed by a wing nut to screw in or out, thereby placing the panel portion 2 in a laid-down position or in an upright position where it cannot rotate relative to the fixed portion 4. Furthermore, each abutment portion 42 of the fixing portion 4 has an upper edge portion 42a formed in a concave shape recessed in an arc shape corresponding to the outer surface of the column portion 21, so that, similar to the abutment portion 32, damage to the outer surface caused by the concentration of force on a part of the column portion 21 abutting against the abutment portion 42 is suppressed.

[0040] The panel unit 2 has the attachment position of the restricting member 6 on the column 21 located below the shaft 5. With this configuration, when the panel unit 2 is collapsed, as shown in FIGS. 19 and 20 , the portion of the panel unit 2 located above the shaft 5 tilts forward, and the portion of the panel unit 2 located below the shaft 5, including the attachment position of the restricting member 6, tilts backward on the opposite side. By attaching the restricting member 6 to the side opposite the portion that tilts in the collapse direction, the portion that faces the opposite direction to the collapse direction when the panel unit 2 is collapsed is made larger, thereby reducing the force required to rotate the panel unit 2. Specifically, this reduces the force required to support the upper portion of the panel unit 2 to slowly rotate and tilt it when collapsing the panel unit 2, and the force required to lift and rotate the upper portion of the panel unit 2 when returning the collapsed panel unit 2 to its upright position. This makes each of the above operations easier.

[0041] The folding fence 1 can effectively arrange a plurality of panel sections 2 side by side by using the fixing section 4 having two support sections 41. Specifically, as shown in Fig. 1, by arranging and installing the fixing section 4 between adjacent panel sections 2, it is possible to pivotally mount each of the pillar sections 21 of each panel section 2 with a single fixing section 4. In particular, when arranging a large number of panel sections 2 side by side in the longitudinal direction, by using the fixing section 4 having two support sections 41, it is possible to reduce the number of fixing sections to be installed on the installation surface G, and to facilitate the installation work of the folding fence 1. Furthermore, by installing the fixing part 3 having one support part 31 at the end in the longitudinal direction, the aesthetic appearance of the folding fence 1 can be improved.

[0042] The foldable fence 1 according to the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention. For example, the foldable fence 1 shown in Fig. 1 has the fixed parts 3 and 4 installed at a distance in the longitudinal direction, with the panel part 2 attached between each of the fixed parts 3, 4, but this is not limited to this configuration. Two fixed parts 3 may be installed with one panel part 2 attached between them. When attaching the panel part 2 between two fixed parts 3, each fixed part is formed so that the support part 31 of each support part 30 can be positioned corresponding to the post part 21 of the panel part 2.

[0043] Furthermore, although the foldable fence 1 has the restricting member 6 equipped with a male screw member 61 and a female screw member 62, this is not limited to this. A female screw for fastening the male screw member 61 may be formed in the support part 31 of the fixed part 3 or the support part 41 of the fixed part 4, and a part of the support part 31 or the support part 41 may function as the female screw member 62 of the restricting member 6.

[0044] The regulating member 6 may also be formed of another object that does not have a male or female thread. For example, a pin member such as a so-called round-head pin may be used as the regulating member. Specifically, the body of a pin member having a rod-shaped body and a head that is radially larger than the body may be inserted into the panel portion 2 and the through-hole 31b or the through-hole 41b, similar to the male thread portion 61b of the regulating member 6, to function as the regulating member. When a pin member is attached as a regulating member, a through-hole that penetrates radially may be formed in the end of the body, and a snap pin, split pin, or the like may be attached to the through-hole to prevent the pin member from being removed. Alternatively, a groove extending in the circumferential direction may be formed in the end of the body, and a snap ring, such as a C-type or E-type retaining ring, may be attached to the groove to prevent the pin member from being removed. A wire may also be used as the restricting member. Specifically, similar to the male thread portion 61b of the restricting member 6, a wire may be inserted through the panel portion 2 and the through-hole 31b or the through-hole 41b, and both ends of the wire may be connected outside the panel portion 2 to form a ring shape, which may then be attached to function as the restricting member.

[0045] Furthermore, the panel portion 2 is formed as a vertical lattice panel having a lattice portion 27, but is not limited to this, and may be formed as a panel body having only beam-shaped portions extending in the longitudinal direction between each of the pillar portions 21 that serve as connection portions, or may be formed as a panel body in which a mesh-like body or plate-like body is arranged between each of the pillar portions 21, or may be formed as another panel body. [Explanation of symbols]

[0046] 1 Retractable fence 2 Panel section 21 Column section 26 Beam section 27 Lattice section 3 Fixed part 30 Support section 30a Board section 30b Side plate part 30c upper plate 31 Support part 32 Contact part 34 Insertion part 39 Installation part 4 Fixed part 40 Support section 40a Circuit board 40b Side plate part 41 Support part 42 Contact part 49 Installation part 5 Shaft 5a head 51 Male threaded member 52 Female thread member 53 Spacer 6 Regulatory elements 61 Male threaded member 62 Female thread member B anchor bolt

Claims

1. A foldable fence comprising a plurality of fixed parts installed at intervals in the longitudinal direction and panel parts arranged between the fixed parts and pivotally supported by the fixed parts, Each of the fixing portions includes an installation portion fixed to an installation surface and a support portion extending upward from the installation portion, The panel portion is formed with connection portions that are respectively connected to the support portions of the fixing portions, and the connection portions are pivotally supported on the support portions by shaft portions, and rotation of the panel portion around the shaft portions is restricted by restricting members made of fastening members that pass through the connection portions, A foldable fence characterized in that a contact portion is provided on the fixed portion, the contact portion is formed so that the outer surface of the connection portion of the panel portion in a collapsed state contacts the contact portion, and the portion where the outer surface of the connection portion contacts is formed in a shape corresponding to the outer surface.

2. A foldable fence as described in Claim 1, characterized in that the panel portion is rotatable from an upright position to a position where it is folded down until the outer surface of the connection portion abuts against the abutment portion.

3. A foldable fence as described in claim 1 or 2, characterized in that the regulating member has a male threaded portion and a head portion that is radially larger than the male threaded portion, and the male threaded portion is screwed in with the head portion abutting the outer surface of the connection portion.

4. A foldable fence as described in any one of claims 1 to 3, characterized in that a plurality of support portions are formed on the fixed portion, and each support portion is pivotally supported by a connection portion of a different panel portion.

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