Movable fence and caster for support of movable fence

Abstract

To provide a movable fence which is easily switched between installation and movement.SOLUTION: A movable fence 100 in an embodiment includes: a pair of supports 7; an installation member 8 that is installed between the pair of supports 7; and a caster 1 for a support that is attached to the support 7. The caster 1 for the support includes: a plurality of wheels 2; a base plate 3 to which the plurality of wheels 2 are attached; a sheath pipe 4 to which a base plate 3 is attached and into which the support 7 is inserted; a groove part 5 that is formed in the sheath pipe 4; and a projection part 6 that is formed in the support 7 and is relatively movable along the groove part 5. The groove part 5 has an inclined groove part 51 which is inclined with respect to the horizontal, and by relatively moving the projection part 6 along the inclined groove part 51, a state where a lower end of the support 7 is separated from the ground, and a state where the lower end of the support 7 is in contact with the ground are controlled.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a movable fence and a caster for a support post of the movable fence. [Background technology]

[0002] Conventionally, movable fences that can be moved from their installation locations have been proposed, for example, in Patent Documents 1 and 2.

[0003] The protective fence of Patent Document 1 comprises a plurality of fixed pipes fixed to the ground at predetermined locations, a protective fence main body installed on the ground at the predetermined locations and having a plurality of outer pipes extending in the vertical direction above each of the plurality of fixed pipes and beams connecting the plurality of outer pipes, and connecting members inserted into the fixed pipes so as to be positioned across the space within the outer pipes and the space within the fixed pipes and thereby be movable in the vertical direction between a connecting height position where the outer pipes and the fixed pipes are connected and a detachment height position where the connecting members detach downward from the space within the outer pipes, and the protective fence main body has a holding device that holds the connecting members at the connecting height position when they are positioned at the connecting height position.

[0004] The protective fence system of Patent Document 2 comprises a plurality of movable protective fences, and the protruding dimensions of the first front protrusion, first rear protrusion, second front protrusion and second rear protrusion of each movable protective fence are set to allow the first and second front protrusions of any movable protective fence to overlap with the first and second rear protrusions of the movable protective fence adjacent to it on the front side, and for the first front protrusion and second rear protrusion to be positioned respectively on the widthwise outside of the first rear protrusion and second front protrusion, and are set to dimensions that allow the first front protrusion of any movable protective fence to rotate around a vertical axis in a direction moving away widthwise outside from the first rear protrusion of the movable protective fence adjacent to it on the front side, thereby allowing the movable protective fence to detach from the movable protective fences on both the front and rear sides thereof. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-108769 [Patent Document 2] Japanese Patent Application Publication No. 2019-157583 Summary of the Invention [Problem to be solved by the invention]

[0006] In the technology disclosed in Patent Document 1, a connecting member is inserted into a fixed pipe buried underground. In the technology disclosed in Patent Document 2, an insertable pipe is inserted into a fixed pipe buried underground. When installing a fence in a predetermined location or moving the fence, in the technologies disclosed in Patent Documents 1 and 2, the connecting member that can be inserted into the fixed pipe or the insertable pipe must be manually lifted. This results in a significant burden when switching between installing and moving the fence.

[0007] Therefore, the present invention was devised in consideration of the above-mentioned circumstances, and its purpose is to provide a movable fence and casters for the posts of the movable fence that can be easily switched between installation and movement. [Means for solving the problem]

[0008] The movable fence of the present invention is a movable fence comprising a pair of posts, an erection material mounted on the pair of posts, and a post caster attached to the posts, wherein the post caster has a plurality of wheels, a base plate to which the plurality of wheels are mounted, a sheath tube to which the base plate is mounted and into which the post is inserted, a groove formed in either the sheath tube or the post, and a protrusion formed in the other of the sheath tube or the post and capable of moving relatively along the groove, wherein the groove has an inclined groove that is inclined with respect to the horizontal, and by moving the protrusion relatively along the inclined groove, the state in which the lower end of the post is separated from the ground and the state in which the lower end of the post is in contact with the ground can be controlled.

[0009] The caster for a movable fence post of the present invention is a caster for a movable fence post that is attached to the posts of a movable fence that has a pair of posts and erection materials that are erected on the pair of posts, and has a plurality of wheels, a base plate to which the plurality of wheels are attached, a sheath tube to which the base plate is attached and into which the post is inserted, a groove portion formed in either the sheath tube or the post, and a protrusion portion formed in the other of the sheath tube or the post and that is movable relatively along the groove portion, and is characterized in that the groove portion has an inclined groove portion that is inclined with respect to the horizontal, and by moving the protrusion portion relatively along the inclined groove portion, it is possible to control a state in which the lower end of the post is in contact with the ground and a state in which the lower end of the post is separated from the ground. [Effects of the Invention]

[0010] According to the present invention, a movable fence has a groove formed in either the sheath tube or the support post, and a protrusion formed in the other of the sheath tube or the support post that is movable along the groove, the groove having an inclined groove inclined with respect to the horizontal, and by moving the protrusion along the inclined groove, the lower end of the support post can be controlled between a state in which it is spaced apart from the ground and a state in which it is in contact with the ground. By rotating the sheath tube relative to the support post, the protrusion moves along the inclined groove, allowing the support post to switch between a state in contact with the ground and a state in which it is spaced apart. This makes it easy to install and move the movable fence.

[0011] For example, in testing ADAS (Advanced Driver Assistance Systems), the positions of lane boundaries of a vehicle may be changed as needed. In this regard, the movable fence according to the present invention can be easily set up and moved, making it suitable for use as a lane boundary in ADAS testing. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a front view showing an example of a movable fence according to the first embodiment. [Figure 2]FIG. 2(a) is a side view showing an example of the lower end of a support post of a movable fence in the first embodiment, and FIG. 2(b) is a horizontal cross-sectional view showing an example of a support post of a movable fence in the first embodiment. [Figure 3] Figure 3 is a side view showing an example of a movable fence in the first embodiment, where Figure 3(a) is a diagram showing the movable fence in a movable state, and Figure 3(b) is a diagram showing the movable fence in a fixed state. [Figure 4] Figure 4 is a horizontal cross-sectional view showing an example of a movable fence in the first embodiment, where Figure 4(a) shows the movable fence in a movable state, and Figure 4(b) shows the movable fence in a fixed state. [Figure 5] FIG. 5(a) is a plan view showing an example of a sheath pipe of a movable fence in the first embodiment, and FIG. 5(b) is a development view showing an example of a sheath pipe of a movable fence in the first embodiment. [Figure 6] Figure 6 is an enlarged front view of an example of a movable fence in the first embodiment, where Figure 6(a) shows the movable fence in a movable state, and Figure 6(b) shows the movable fence in a fixed state. [Figure 7] FIG. 7 is a front view showing an example of a movable fence according to the second embodiment. [Figure 8] FIG. 8 is a front view showing an example of a movable fence according to the third embodiment. [Figure 9] FIG. 9(a) is a side view showing an example of the lower end of a support post of a movable fence in the third embodiment, and FIG. 9(b) is a horizontal cross-sectional view showing an example of a support post of a movable fence in the third embodiment. [Figure 10] Figure 10 is an enlarged front view of an example of a movable fence in the third embodiment, where Figure 10(a) shows the movable fence in a movable state, and Figure 10(b) shows the movable fence in a fixed state. [Figure 11] FIG. 11 is a front view showing an example of a movable fence according to the fourth embodiment. [Figure 12]Figure 12 is an enlarged front view of an example of a movable fence in the fifth embodiment, where Figure 12(a) shows the movable fence in a movable state, and Figure 12(b) shows the movable fence in a fixed state. [Figure 13] FIG. 13 is a development view showing an example of the lower end portion of a support post of a movable fence in the fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out a movable fence and a caster for a support post of a movable fence to which the present invention is applied will be described in detail with reference to the drawings.

[0014] First Embodiment As shown in Fig. 1, the movable fence 100 includes a pair of posts 7, an erection member 8 mounted on the pair of posts 7, and a movable fence post caster 1 attached to the post 7. Hereinafter, the movable fence post caster 1 will also be simply referred to as the post caster 1.

[0015] For example, steel pipes 81 are used as the erection members 8. The pipes 81 are attached to the support posts 7 via mounting brackets. Three pipes 81 are attached to the support posts 7.

[0016] As shown in Figures 2(a) and 2(b), the support pillar 7 is made of steel and formed into a cylindrical shape. The support pillar 7 extends in the vertical direction. The outer diameter of the support pillar 7 is, for example, approximately 114.3 mm. The support pillar 7 has a protrusion 6 formed by a rod-shaped member passing through it. A first flat plate 71 made of a steel plate or the like is attached to the outer surface of the support pillar 7 by welding or the like.

[0017] As shown in FIGS. 3(a) and 3(b), a first flat plate 71 is formed with a through-hole 72 into which a stake 73 is inserted.

[0018] The caster 1 for a support pillar includes a plurality of wheels 2, a base plate 3, a sleeve tube 4, a groove portion 5, and a protrusion portion 6.

[0019] 4(a) and 4(b), the wheel 2 is a well-known wheel that can rotate 360° horizontally. Even when the wheel 2 is brought closest to the sleeve tube 4, the wheel 2 is separated from the support 7, so the wheel 2 can rotate 360° horizontally.

[0020] Three wheels 2 are attached to the base plate 3. Having three wheels 2 makes it easier for the support caster 1 to stand on its own. In this embodiment, three wheels 2 are attached to the base plate, but in the present invention, two or more wheels 2 may be attached to the base plate 3.

[0021] At least one of the three wheels 2 is preferably provided with a well-known stopper 21 that has the function of switching between locking and unlocking the wheel 2.

[0022] The base plate 3 is made of, for example, a steel plate formed in a triangular shape in a plan view. Wheels 2 are attached to each corner of the base plate 3. The three wheels 2 are arranged at equal intervals (120° intervals) around the circumferential direction of the base plate 3.

[0023] A base plate 3 is attached around the sleeve pipe 4. The sleeve pipe 4 passes through the base plate 3 and extends vertically. The sleeve pipe 4 is made of steel and is formed in a cylindrical shape. Three wheels 2 are arranged around the sleeve pipe 4. The outer diameter of the sleeve pipe 4 is, for example, about 139.8 mm. The inner diameter of the sleeve pipe 4 is larger than the outer diameter of the support 7.

[0024] 3(a) and 3(b), the length of the sleeve pipe 4 in the longitudinal direction is shorter than the length of the support 7 in the longitudinal direction. The support 7 penetrates the inside of the sleeve pipe 4.

[0025] As shown in Figures 5(a) and 5(b), the sleeve tube 4 has two grooves 5, an upper end insertion groove 54 that connects the upper end of the sleeve tube 4 to the grooves 5, and two second flat plates 41.

[0026] The length of the groove 5 in the circumferential direction of the sleeve tube 4 is the length of the arc of the sleeve tube 4 when the central angle is 120° (one-third of the circumference of the sleeve tube 4). The groove 5 is formed by cutting out the side wall of the sleeve tube 4. The groove 5 has an inclined groove portion 51 that is inclined with respect to the horizontal, and horizontal groove portions 52 and 53 that extend horizontally at the upper and lower ends of the inclined groove portion 51. The upper horizontal groove portion 52 has the inclined groove portion 51 formed at one end and an upper end insertion groove portion 54 formed at the other end. It should be noted that in the present invention, the horizontal groove portions 52 and 53 may be omitted.

[0027] The upper end insertion groove 54 is formed by cutting out the side wall of the sleeve tube 4 from the upper end of the sleeve tube 4. The upper end insertion groove 54 extends in the vertical direction and connects to the upper horizontal groove 52. The upper end insertion groove 54 allows the protrusion 6 to move.

[0028] Two second flat plates 41 made of steel or the like are attached to the outer surface of the sleeve pipe 4 by welding or the like.

[0029] As shown in FIGS. 3(a) and 3(b), the second flat plate 41 is formed with through holes 42 into which the pegs 73 are inserted.

[0030] The pile 73 is formed by bending the upper end of a rod-shaped member such as round steel into an L shape. When the pile 73 is inserted into the through-hole 72 of the first flat plate 71 and the through-hole 42 of the second flat plate 41, relative rotation between the sheath pipe 4 and the support 7 can be prevented. The lower end of the pile 73 contacts the base plate 3.

[0031] In the present invention, the lower end of the stake 73 may contact the ground. In this case, for example, a through-hole for inserting the stake 73 is formed in the base plate 3, and the lower end of the stake 73 inserted into the through-hole contacts the ground. This makes it possible to suppress movement of the caster for a pole 1.

[0032] As shown in FIGS. 6( a) and 6(b), the protrusion 6 is made of a rod-shaped member such as a round steel bar that penetrates the support 7. By rotating the sheath tube 4 and the support 7 relative to each other in the horizontal direction, the protrusion 6 can move relatively along the groove 5. As shown in FIG. 6(a), when the protrusion 6 is placed in the upper horizontal groove 52 of the groove 5, the lower end of the support 7 is separated from the ground. As shown in FIG. 6(b), when the protrusion 6 moves to the lower end of the inclined groove 51 and is placed in the lower horizontal groove 53, the lower end of the support 7 is in contact with the ground. In this way, by moving the protrusion 6 along the inclined groove 51, the state in which the lower end of the support 7 is separated from the ground (hereinafter also referred to as a movable state) and the state in which the lower end of the support 7 is in contact with the ground (hereinafter also referred to as a fixed state) can be controlled.

[0033] As shown in Figure 3(a), the protrusion 6 can be inserted from the upper end insertion groove 54 into the upper horizontal groove 52 of the groove 5. This allows the column caster 1 to be attached to and detached from the column 7 by inserting and removing the protrusion 6 formed on the column 7 from the upper end insertion groove 54 of the sheath tube 4. This makes it easy to attach and detach the column caster 1 to and from the column 7.

[0034] <Example of operation of the movable fence 100> Next, an example of the operation of the movable fence 100 will be described.

[0035] As shown in Figures 3(a), 5(a), and 6(a), the protrusion 6 is placed in the upper horizontal groove 52 of the groove 5. At this time, the lower end of the post 7 is separated from the ground. This allows the movable fence 100 to be moved. In the movable state, the stake 73 is inserted into the through-hole 72 of the first flat plate 71 and the through-hole 42 of one of the second flat plates 41. This prevents relative rotation between the sheath pipe 4 and the post 7.

[0036] After the movable fence 100 has been moved to a predetermined position, if the wheels 2 have stoppers 21, the wheels 2 are locked by the stoppers 21. This temporarily fixes the movable fence 100 in a movable state, and the installation position of the movable fence 100 is temporarily determined.

[0037] Then, the stake 73 inserted into the through-hole 72 of the first flat plate 71 and the through-hole 42 of one of the second flat plates 41 is pulled out. This allows relative rotation between the sheath pipe 4 and the support post 7. Note that, because locking the wheel 2 with the stopper 21 is a temporary fixation of the movable fence 100, relative rotation between the sheath pipe 4 and the support post 7 is possible even when the wheel 2 is locked by the stopper 21.

[0038] Then, as shown in FIGS. 3(b), 5(b), and 6(b), the worker rotates the support caster 1 horizontally by 120° relative to the support 7. At this time, the protrusion 6 arranged in the upper horizontal groove 52 moves relatively from the inclined groove 51 to the lower horizontal groove 53. When the protrusion 6 moves relatively to the lower end of the inclined groove 51, the lower end of the support 7 comes into contact with the ground. This allows the movable fence 100 to be installed in a predetermined position. At this time, as shown in FIG. 3(b), the wheel 2 may be spaced about 6 mm from the ground.

[0039] Thereafter, in the fixed state, the stakes 73 are inserted into the through-holes 72 of the first flat plate 71 and the through-holes 42 of the other second flat plate 41. This prevents relative rotation between the sheath pipe 4 and the support 7. This makes it easier to maintain the fixed state, and therefore makes it easier to maintain the movable fence 100 installed in a predetermined position.

[0040] To move the installed movable fence 100, the above procedure can be reversed. That is, the stakes 73 inserted into the through-holes 72 of the first flat plate 71 and one of the second flat plates 41 are pulled out. This allows the sheath pipe 4 and the support posts 7 to rotate relative to each other.

[0041] Then, the worker rotates the support caster 1 horizontally 120° relative to the support 7. At this time, the protrusion 6 arranged in the lower horizontal groove 53 moves relatively from the inclined groove 51 to the upper horizontal groove 52. When the protrusion 6 moves relatively to the upper end of the inclined groove 51, the lower end of the support 7 is separated from the ground. Furthermore, the wheel 2, which was separated from the ground by approximately 6 mm, comes into contact with the ground. When the support 7 comes into contact with the ground, the wheel 2 is locked by the stopper 21, so the movable fence 100 can be temporarily fixed. Therefore, even when the movable fence 100 is installed on a slope, the movable fence 100 can be prevented from suddenly moving. Then, the wheel 2 is unlocked by the stopper 21. Therefore, the movable fence 100 can be moved.

[0042] In the movable state, the pegs 73 are inserted into the through holes 72 of the first flat plate 71 and the through holes 42 of the other second flat plate 41. This prevents relative rotation between the sheath tube 4 and the support 7. This makes it easier to maintain the movable state.

[0043] This completes one example of the operation of the movable fence 100.

[0044] In the above-described example of the operation of the movable fence 100, the wheel 2 is locked by the stopper 21, and then the sleeve tube 4 and the support post 7 are rotated relative to each other. In another example of the operation of the movable fence 100, the wheel 2 may be locked by the stopper 21 after the sleeve tube 4 and the support post 7 are rotated relative to each other.

[0045] When the movable fence 100 is to be set in the installed state while it is in the movable state, the wheel 2 may be unlocked by the stopper 21, and the sleeve tube 4 and the support post 7 may be rotated relative to each other, and then the wheel 2 may be locked by the stopper 21. This makes it easier for the wheel 2 to roll, and therefore easier for the sleeve tube 4 and the support post 7 to rotate relative to each other.

[0046] When the movable fence 100 is set in an installed state and made movable, the wheel 2 may be locked by the stopper 21, and the sleeve tube 4 and the support 7 may be rotated relative to each other, and then the wheel 2 may be unlocked by the stopper 21. This makes it possible to prevent the movable fence 100 from moving suddenly, even when the movable fence 100 is set on a slope or the like.

[0047] According to this embodiment, the support post 7 has a groove 5 formed in the sheath tube 4 and a protrusion 6 formed on the support post 7 that is movable along the groove 5. The groove 5 has an inclined groove 51 that is inclined relative to the horizontal. By moving the protrusion 6 along the inclined groove 51, the lower end of the support post 7 can be controlled between a state in which it is separated from the ground and a state in which it is in contact with the ground. By rotating the support post caster 1 by 120° horizontally relative to the support post 7, the protrusion 6 moves along the inclined groove 51, allowing the support post 7 to switch between a state in which it is separated from the ground and a state in which it is in contact with the ground. Because the support post 7 can be moved up and down by rotating the support post caster 1, the burden on the worker is reduced compared to when the worker lifts the support post 7 itself. This makes it easy to switch between installation and movement of the movable fence 100.

[0048] For example, in testing of ADAS (Advanced Driver Assistance Systems), the positions of lane boundaries of a vehicle may be changed as needed. In this regard, the movable fence 100 of this embodiment can be easily switched between installation and movement, and is therefore suitable for use as a lane boundary in ADAS testing.

[0049] According to this embodiment, the device further includes a first flat plate 71 attached to the support 7 and having a through hole 72, a second flat plate 41 attached to the sheath pipe 4 and having a through hole 42, and a peg 73 inserted into the through hole 72 of the first flat plate 71 and the through hole 42 of the second flat plate 41. This prevents relative rotation between the sheath pipe 4 and the support 7, thereby preventing switching between the fixed state and the movable state.

[0050] According to this embodiment, by providing the upper horizontal groove 52 at the upper end of the inclined groove 51, even if there is a slight relative rotation between the sheath tube 4 and the support 7, the protrusion 6 arranged in the upper horizontal groove 52 can be prevented from moving into the inclined groove 51. This makes it easier to maintain the movable state, making it easier to move the movable fence 100.

[0051] According to this embodiment, by providing the lower horizontal groove 53 at the lower end of the inclined groove 51, even if there is a slight relative rotation between the sheath tube 4 and the support 7, the protrusion 6 arranged in the lower horizontal groove 53 can be prevented from moving into the inclined groove 51. This makes it easier to maintain the fixed state, making it easier to maintain the movable fence 100 installed in a predetermined position.

[0052] According to this embodiment, the sheath tube 4 has an upper end insertion groove 54 that connects from the upper end of the sheath tube 4 to the groove 5, and the protrusion 6 can be inserted into the upper end insertion groove 54. This allows the column caster 1 to be attached to and detached from the column 7 by inserting and removing the protrusion 6 formed on the column 7 into and from the upper end insertion groove 54 of the sheath tube 4. This makes it easy to attach and detach the column caster 1 to and from the column 7.

[0053] Second Embodiment Next, a movable fence 100 in a second embodiment will be described. Detailed description of the same configuration as in the above-mentioned embodiment will be omitted below. As shown in FIG. 7, the movable fence 100 in this embodiment uses a steel beam 82 as the erection member 8. The beam 82 is attached to a support post 7.

[0054] Third Embodiment Next, a movable fence 100 in a third embodiment will be described. As shown in FIG. 8 , the movable fence 100 in this embodiment uses horizontal members 83 and vertical members 84 as the erection members 8. The horizontal members 83 are made of steel rod-shaped members and are arranged in pairs above and below. The horizontal members 83 are provided between a pair of posts 7. The vertical members 84 are made of steel rod-shaped members and are erected on the pair of horizontal members 83. A plurality of vertical members 84 are provided between the pair of horizontal members 83. The vertical members 84 arranged at the ends are attached to the posts 7.

[0055] The pillar 7 has a pillar main body 78 to which the erection material 8 is attached, a first flat plate 71 attached to the lower end side of the pillar main body 78, and an insert member 79 attached to the underside of the first flat plate 71. The outer diameter of the pillar main body 78 is, for example, approximately 60.5 mm. The lower end of the pillar main body 78 is surrounded by the insert member 79.

[0056] As shown in Figures 9(a) and 9(b), the first flat plate 71 is penetrated by the support main body 78 and is fixed to the periphery of the support main body 78 by welding or the like. The first flat plate 71 is fixed to the upper end of an insertion member 79 by welding or the like. The first flat plate 71 is formed with a through hole 72 for inserting a stake 73. The insertion member 79 is formed in a cylindrical shape. The outer diameter of the insertion member 79 is, for example, approximately 114.3 mm. The insertion member 79 is formed with a protrusion 6 that penetrates the side wall of the insertion member 79.

[0057] 10(a) and 10(b), the longitudinal length of the sheath tube 4 is shorter than the longitudinal length of the insertion member 79. The insertion member 79 of the support 7 passes through the inside of the sheath tube 4.

[0058] According to this embodiment, the support 7 has a support body 78 to which the erection material 8 is attached and an insertion member 79 that surrounds the lower end of the support body 78. The insertion member 79 is inserted into the sheath tube 4, and a protrusion 6 is formed on the insertion member 79. As a result, even a pre-fabricated support 7 having a support body 78 with a small diameter can be attached to and detached from the support caster 1 via the insertion member 79. Therefore, the insertion member 79 can be used as an attachment to the support caster 1.

[0059] <Fourth embodiment> Next, a movable fence 100 in a fourth embodiment will be described. As shown in Fig. 11 , the movable fence 100 in this embodiment uses a cross member 83 as the erection member 8. The cross member 83 is formed by bending the upper end of the support post main body 78, and is formed integrally with the support post main body 78. A reinforcing member 85 is provided below the cross member 83. The reinforcing member 85 is installed between the pair of support columns 7. The reinforcing member 85 is, for example, a steel pipe.

[0060] Fifth Embodiment Next, a movable fence 100 in a fifth embodiment will be described. As shown in Figures 12(a) and 12(b), the movable fence 100 in this embodiment has grooves 5 formed in the posts 7 and protrusions 6 formed in the sheath pipe 4.

[0061] The sleeve pipe 4 is formed with a protrusion 6 formed by passing a rod-shaped member such as a round steel bar through it.

[0062] As shown in FIG. 13, the support 7 has two grooves 5.

[0063] The length of groove 5 in the circumferential direction of support 7 is the length of the arc of support 7 when the central angle is 120° (1 / 3 of the circumference of support 7). Groove 5 is formed by cutting out the side wall of support 7. Groove 5 has an inclined groove 51 that is inclined relative to the horizontal, and horizontal grooves 52 and 53 that extend horizontally at the upper and lower ends of inclined groove 51. The upper horizontal groove 52 has inclined groove 51 formed at one end.

[0064] According to this embodiment, the support post 7 has a groove 5 formed therein, and a protrusion 6 formed on the sheath tube 4 that is movable along the groove 5. The groove 5 has an inclined groove 51 that is inclined relative to the horizontal. By moving the protrusion 6 along the inclined groove 51, the lower end of the support post 7 can be controlled between a state in which it is spaced apart from the ground and a state in which it is in contact with the ground. By rotating the support post caster 1 by 120° horizontally relative to the support post 7, the protrusion 6 moves along the inclined groove 51, allowing the support post to switch between a state in which it is spaced apart from the ground and a state in which it is in contact with the ground. Because the support post 7 can be moved up and down by rotating the support post caster 1, the burden on the worker is reduced compared to when the worker lifts the support post 7 itself. This makes it easy to switch between installation and movement of the movable fence 100.

[0065] In the present invention, it is sufficient to provide the groove portion 5 formed on either the sheath tube 4 or the support 7, and the protrusion portion 6 formed on the other of the sheath tube 4 or the support 7.

[0066] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Furthermore, the present invention can be embodied in various novel forms in addition to the above-described embodiments. Therefore, various omissions, substitutions, and modifications are possible in the above-described embodiments without departing from the spirit of the invention. Such novel forms and modifications are included within the scope and spirit of the invention, as well as within the scope of the inventions set forth in the claims and equivalents of the inventions set forth in the claims. [Explanation of symbols]

[0067] 100: Movable fence 1: Caster for support column 2: Wheels 21: Stopper 3: Base plate 4: Sheath tube 41:Second flat plate 42: Through hole 5: Groove 51: Inclined groove part 52:Horizontal groove 53:Horizontal groove 54: Upper end insertion groove 6:Protrusion 7: Strut 71: 1st plate 72: Through hole 73:Pile 78: Main body of support 79: Insertion material 8:Erection materials 81: Pipe 82: Beam 83: Horizontal material 84: Vertical member 85: Reinforcement material

Claims

1. A movable fence comprising a pair of posts, an erection member installed between the pair of posts, and a post caster attached to the posts, The support caster is Multiple wheels and a base plate to which a plurality of the wheels are attached; a sleeve tube to which the base plate is attached and into which the support rod is inserted; a groove formed in either the sheath tube or the support; a protrusion formed on the other of the sheath tube and the support rod and relatively movable along the groove, The groove portion has an inclined groove portion inclined with respect to the horizontal, By relatively moving the protrusion along the inclined groove, a state in which the lower end of the support is separated from the ground and a state in which the lower end of the support is in contact with the ground are controlled. A movable fence characterized by:

2. a first flat plate attached to the support and having a through hole; a second flat plate attached to the sleeve pipe and having a through hole; The structure further includes a stake inserted into the through hole of the first flat plate and the through hole of the second flat plate. The movable fence according to claim 1,

3. The stakes are in contact with the ground. The movable fence according to claim 2, characterized in that

4. The groove portion has a horizontal groove portion extending horizontally at at least one of the upper end and the lower end of the inclined groove portion. The movable fence according to claim 1,

5. the sleeve pipe has an upper end insertion groove portion that is connected from an upper end of the sleeve pipe to the groove portion, The upper end insertion groove allows the protrusion to be inserted therein. The movable fence according to claim 1,

6. A movable fence caster attached to a pair of posts of a movable fence including a pair of posts and an erection member erected on the pair of posts, Multiple wheels and a base plate to which a plurality of the wheels are attached; a sleeve tube to which the base plate is attached and into which the support rod is inserted; a groove formed in either the sheath tube or the support; a protrusion formed on the other of the sheath tube and the support rod and relatively movable along the groove, The groove portion has an inclined groove portion inclined with respect to the horizontal, By relatively moving the protrusion along the inclined groove, a state in which the lower end of the support pole is in contact with the ground and a state in which the lower end of the support pole is separated from the ground are controlled. A caster for movable fence posts characterized by the above.

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