Pole stand

Abstract

To provide a novel pole stand which is lightweight and can be installed even in a place with a step or in a narrow space. The pole stand 100 supports a columnar hollow pole 200 and includes a cylindrical stand body 10 with a bottom and a fitting hole 11 on the top surface into which the bottom end of the hollow pole 200 fits, and a magnet member 20 attached to the bottom of the stand body 10. Compared to conventional rubber pole stands, it is lighter and can be made smaller, so it can be installed in places with steps or in narrow spaces.

Description

[Technical Field]

[0001] This invention relates to a pole stand used to prevent people or vehicles from entering a site, or to define taxiways or other structures. [Background technology]

[0002] Conventionally, methods for preventing people or vehicles from entering a site or for dividing up taxiways, etc., have often been used, for example, by erecting multiple poles and connecting them with chains. Many poles have been proposed for this purpose, ranging from full-scale, embedded metal poles to simple, portable plastic poles, but in all cases the chains connecting the poles are separate from the poles, making assembly and storing the chains when not in use cumbersome.

[0003] Therefore, the inventors have proposed a partition device in which an opening through which a resin chain passes and a hook for hooking the end of the chain are formed near the upper end of a hollow resin pole, and end rings with a diameter larger than the maximum diameter of the opening are provided on both ends of the chain, as shown in the following Patent Document 1. Then, as shown in the following Patent Document 2, this hollow pole is supported vertically by a weight-shaped pole stand made of rubber having a thick central portion with an engagement hole in the center and an outer annular portion extending around the periphery. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2024-138135 [Patent Document 2] Utility Model Registration No. 3190591 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the pole stands shown in Patent Documents 1 and 2 consist of a semi-conical rubber disk with a raised center, so in order to set it up, a flat space is required for the entire bottom surface to fit snugly. This makes it difficult to set up a hollow pole in a place with a step or in a narrow space where the entire bottom surface cannot fit snugly. Furthermore, the pole needs to be heavy to prevent it from easily shifting or falling over due to wind or vibration.

[0006] Therefore, the purpose of this invention was devised to solve these problems, and its purpose is to provide a new pole stand that is lightweight and can be installed even in places with steps or in narrow spaces. [Means for solving the problem]

[0007] The first invention to solve the above problem is a pole stand that supports a columnar hollow pole, characterized by having a cylindrical stand body with a bottom and a fitting hole on the top surface into which the lower end of the hollow pole fits, and a magnetic member attached to the bottom of the stand body.

[0008] With this configuration, the stand body for supporting the hollow pole can be made significantly smaller than conventional rubber disc-shaped pole stands, allowing it to be securely installed in places with uneven surfaces or in narrow spaces. It can also be installed on pillars (iron poles), walls, or ceilings, as long as the surface is made of a ferromagnetic material such as a steel plate to which the built-in magnetic member can be attracted. Furthermore, because the stand body is firmly fixed by the magnetic force, it can be made significantly lighter than conventional heavy rubber pole stands.

[0009] The second invention is a pole stand that, in addition to the first invention, has a protrusion that protrudes radially outward at the lower end of the hollow pole, and the inner surface of the mating hole in the stand body has a vertical groove into which the protrusion fits, and a circumferential groove that extends from the bottom of the vertical groove along the circumferential direction of the mating hole.

[0010] With this configuration, the protrusion of the hollow pole is fitted all the way to the bottom along the vertical groove on the inner surface of the fitting hole in the stand body, and then the hollow pole is rotated to fit the protrusion into the circumferential groove, preventing the hollow pole from coming off the stand body. This means that the hollow pole will not come off by itself even if someone touches it or if it is subjected to vibrations such as an earthquake.

[0011] The third invention is a pole stand according to the second invention, characterized in that the circumferential groove gradually narrows from the vertical groove along the circumferential direction. With this configuration, when the protrusion of the hollow pole is inserted from the vertical groove into the circumferential groove, the protrusion is gradually tightened into the circumferential groove as the hollow pole is rotated, so that the hollow pole can be reliably prevented from wobbling or coming loose after installation.

[0012] The fourth invention is a pole stand according to any one of the first to third inventions, further comprising a base made of a ferromagnetic material that is attracted to the magnetic member of the stand body. With this configuration, by fixing the base that is attracted to the magnetic member of the stand body in a predetermined location, the hollow pole can be installed even in places where magnets are not attracted, such as the ground, floor, wall, ceiling, or fixed object made of non-magnetic material such as concrete or wood.

[0013] The fifth invention is a pole stand that, in the fourth invention, further comprises a fixing member for fixing the base to the ground, floor, wall, ceiling, or fixed object made of a non-magnetic material. With this configuration, by fixing the base to which the stand body is attached with the fixing member, the hollow pole can be installed in any location where a magnet is not attached.

[0014] The sixth invention is a pole stand according to the fifth invention, characterized in that the fixing members are bolts, nuts, nails, screws, anchors, adhesives, etc. With this configuration, the base to which the stand body is attached can be easily and firmly fixed to the ground such as grass or soil, or to floors or walls such as concrete or wood. [Effects of the Invention]

[0015] According to this device, the stand body for supporting the hollow pole can be significantly smaller than conventional rubber disc-shaped pole stands, allowing it to be securely installed on uneven surfaces or in narrow spaces. Furthermore, it can be installed on any ferromagnetic surface, such as a pillar (steel pole), wall, or ceiling, as long as it is made of a steel plate to which the built-in magnet can be attached. Furthermore, because the stand body is firmly fixed by the magnetic force of the magnetic member, it can be significantly lighter than conventional heavy rubber pole stands, demonstrating other excellent effects. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view showing one embodiment of a pole stand 100 according to the present invention. [Figure 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Figure 3] FIG. 3 is an enlarged view showing part S in FIG. 2. [Figure 4] 1 is a front view showing a state in which hollow poles 200 are supported by pole stands 100 according to the present invention. [Figure 5] FIG. 2 is a perspective view showing a second embodiment of a pole stand 100 according to the present invention. [Figure 6] FIG. 10 is a perspective view showing another embodiment of the base 30. [Figure 7] FIG. 10 is an explanatory diagram showing an example of use according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 3 show one embodiment of a pole stand 100 according to the present invention, in which Figure 1 is a perspective view of the pole stand 100 seen from above, Figure 2 is a cross-sectional view taken along line AA in Figure 1, Figure 3 is an enlarged view of part S in Figure 2, and Figure 4 is a front view showing the pole stand 100 supporting a hollow pole 200.

[0018] 1 and 2, this pole stand 100 is mainly composed of a cylindrical stand body 10 with a bottom that supports a cylindrical hollow pole 200, and a magnet member 20 attached to the bottom of this stand body 10. The stand body 10 is made of a lightweight, high-strength hard plastic such as polycarbonate (PC) or ABS resin, and has a fitting hole 11 formed on its top surface into which the lower end of the hollow pole 200 fits. Note that this stand body 10 may also be made of metal such as steel or aluminum.

[0019] The diameter of the fitting hole 11 is not particularly limited as long as it is large enough to fit the cylindrical hollow pole 200 with almost no gap, but for example, if the outer diameter of the hollow pole 200 is 65 mm, it is desirable that it be approximately 65.5 to 66.0 mm. In addition, the depth of the fitting hole 11 is not particularly limited either, but it is desirable that it be approximately the same size as the outer diameter of the hollow pole 200, for example, approximately 60 to 70 mm.

[0020] As shown in the figure, the inner surface of the fitting hole 11 is formed with a linear vertical groove 12 extending from the opening 11a to the bottom 11b, and a circumferential groove 13 extending from the bottom of the vertical groove 12 along the circumferential direction of the fitting hole 11. Furthermore, the vertical groove 12 and the circumferential groove 13 are each provided in pairs facing each other across the axial center of the fitting hole 11. Each of the circumferential grooves 13, 13 has a length that is less than half the circumference of the inner surface of the fitting hole 11.

[0021] On the other hand, as shown in Figure 2, the lower end of 200 is provided with a pair of protrusions 210, 210 that protrude radially outward, and when the lower end of the hollow pole 200 is fitted into the fitting hole 11, these protrusions 210, 210 fit into and pass through the vertical groove 12 and the circumferential groove 13, respectively.

[0022] For example, if the width of each of the protrusions 210 is 7 to 8 mm, the width of the vertical groove 12 is preferably about 0.5 to 1.0 mm larger, that is, about 7.5 to 8.5 mm. In contrast, as shown in Figure 3, the height h1 of the circumferential groove 13, i.e., the axial size of the fitting hole 11, gradually decreases (becomes thinner) from the connecting part p1 with the vertical groove 12 along the circumferential direction.

[0023] For example, if the height of each protrusion 210 is 7 to 8 mm, the height h1 near the connecting portion p1 with the longitudinal groove 12 is about 0.5 to 1.0 mm larger, that is, about 7.5 to 8.5 mm, so that each protrusion 210 can pass through easily, but the height of the middle portion p2 of the circumferential groove 13 is 7 to 8 mm, the same as the height of each protrusion 210. Furthermore, the height of the terminal end p3 of the circumferential groove 13 is about 0.5 to 1.0 mm lower than the middle portion p2.

[0024] The magnet member 20 is made of a permanent magnet such as a neodymium magnet, a samarium-cobalt magnet, or a ferrite magnet. As shown in FIGS. 1 and 2, the magnet member 20 is coin-shaped and is fixed to the center of the bottom of the stand main body 10 by a magnet holding part 21. As shown in FIG. 3, the magnet holding part 21 is made of a metal disk and has a storage recess 21a formed in its center. The coin-shaped magnet member 20 is stored in this storage recess 21a and is fixed with an adhesive to prevent the stored magnet member 20 from falling out. The magnet holding part 21 is attached to the bottom of the stand main body 10 by screws 22 or the like.

[0025] The pole stand 100 of the present invention configured as described above can support each hollow pole 200 by its magnetic force while being attached to a floor surface made of a steel plate or the like, as shown in Figure 4. The stand main body 10 constituting this pole stand 100 is cylindrical and slightly larger than the hollow pole 200, requiring a small installation area, allowing it to be securely installed even on uneven surfaces or in narrow spaces. It can also be installed on any surface that can be attached to the magnetic member 20, such as a pillar (iron pillar), wall, or ceiling. Furthermore, because the stand main body 10 is cylindrical and slightly larger than the hollow pole 200, it can be significantly lighter than conventional heavy rubber pole stands.

[0026] Furthermore, the inner surface of the fitting hole 11 of the stand body 10 is formed with a vertical groove 12 into which the protrusion 210 of the hollow pole 200 is fitted, and a circumferential groove 13 extending from the bottom of the vertical groove 12 in the circumferential direction of the fitting hole 11. Therefore, after fitting the protrusion 210 of the hollow pole 200 all the way to the bottom along the vertical groove 12 on the inner surface of the fitting hole 11 of the stand body 10, by rotating the hollow pole 200 to fit the protrusion 210 into the circumferential groove 13, the hollow pole 200 can be prevented from easily falling out of the stand body 10. In particular, when the stand body 10 is attached to a pillar, wall, ceiling, etc., this can reliably prevent the hollow pole 200 from falling out of the stand body 10 by itself even if a person touches the hollow pole 200 or if vibrations such as an earthquake are applied.

[0027] Furthermore, as shown in Figure 3, the circumferential groove 13 gradually narrows from the vertical groove 12 in the circumferential direction, so when fitting the protrusion 210 of the hollow pole 200 from the vertical groove 12 to the circumferential groove 13, the protrusion 210 gradually becomes tightly fitted and fastened into the circumferential groove 13 as the hollow pole 200 is rotated. This more reliably prevents the hollow pole 200 from wobbling or falling out after installation.

[0028] 5 to 7 show a second embodiment of a pole stand 100 according to the present invention. In this embodiment, in addition to the stand main body 10 and the magnetic member 20, a base 30 that is attached to the magnetic member 20 is further provided. The base 30 is made of a ferromagnetic material such as steel or stainless steel, and is in the shape of a plate or block as shown in FIGS. 5 and 6.

[0029] Then, by attaching the base 30, which is attached to the magnetic member 20 of the stand main body 10, to a predetermined location as shown in Fig. 5 and allowing the magnetic member 20 to be attracted to this base 30, the hollow pole 200 can be reliably supported and installed even in places where magnets are not attracted, such as the ground, such as soil or grass, or floors made of non-magnetic materials such as concrete or wood. Also, by fixing this base 30 not only to the floor of a building but also to walls, ceilings, and other structures as shown in Fig. 7, the hollow pole 200 can be installed in any place where magnets are not attracted.

[0030] One method for fixing the base 30 to a location where a magnet will not be attracted is, for example, to drill holes 31 in the four corners of the base 30 as shown in the figure, and use the holes 31 to securely fasten the base 30 with general-purpose fastening members 40, such as bolts and nuts, nails, screws, or anchors. Alternatively, adhesive may be used as the fastening member 40, either alone or in combination with screws. As shown in FIG. 6, if the base 30 is block-shaped, it has a sufficient weight and is stable, so that when installed on the ground or floor, the stand body 10 can be firmly supported without the need for fastening members 40. While the base 30 in the example of FIG. 5 is rectangular, it may also be circular or have other shapes. [Explanation of symbols]

[0031] 10...Stand body 11...Mating hole 11a...Opening 11b...bottom 12...Vertical groove 13...Peripheral groove 20...Magnetic member 21...Magnet holder 21a...accommodating recess 22...bis 30...Pedestal 31...hole 40...Fixing member 100...Pole stand 200...Hollow pole 210...Protrusion p1...Connection p2…middle part p3…Terminal part

Claims

1. A pole stand for supporting a hollow columnar pole, a cylindrical stand body having a bottom and a fitting hole on the upper surface into which the lower end of the hollow pole is fitted; and a magnetic member attached to the bottom of the stand body.

2. 2. The pole stand according to claim 1, The hollow pole has a protrusion at its lower end that protrudes radially outward, A pole stand characterized in that the inner surface of the fitting hole of the stand body has a vertical groove into which the protrusion is fitted, and a circumferential groove extending from the bottom of the vertical groove along the circumferential direction of the fitting hole.

3. The pole stand according to claim 2, A pole stand characterized in that the circumferential groove gradually narrows from the vertical groove along the circumferential direction.

4. The pole stand according to any one of claims 1 to 3, A pole stand further comprising a base made of a ferromagnetic material that is attracted to the magnetic member of the stand body.

5. The pole stand according to claim 4, A pole stand further comprising a fixing member made of a non-magnetic material for fixing the base to the ground, floor, wall, ceiling, or structure.

6. The pole stand according to claim 5, A pole stand characterized in that the fixing members are bolts and nuts, nails, screws, anchors, or adhesive.

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