Flag pole

Abstract

To provide a bamboo flag installation having a simple structure, easy to process and assemble, and excellent not only in terms of weight and beauty but also in terms of strength and durability. [Solution] A flag pole 10 comprises a bamboo vertical rod 20 having a node 20a and to which the long side 40a of a flag 40 having a rectangular planar shape is detachably attached via a tit 50, and a bamboo horizontal rod 30 having a node 30a and to which the upper side of the flag 40 is detachably attached via the tit 50, wherein the vertical rod 20 has a cross-sectional diameter of at least 30 mm, the horizontal rod 30 is tapered with a cross-sectional diameter of less than 15 mm at its tip end and a cross-sectional diameter of 15 mm or more apart from the tip end, the length ratio of the vertical rod 20 to the horizontal rod 30 is 9:2, and a circular through-hole 26 having a diameter of 15 mm is drilled on one end side of the vertical rod 20 at a position 30 mm from the nearest node, and the tip end of the horizontal rod 30 is pushed into the through-hole 26 and fixed so as to be detachable.

Description

[Technical field]

[0001] This invention relates to a flagpole for flags used in shrines, temples, religious facilities, etc. to enhance their unique psychological effects, or for flags used as advertising materials, and in particular to a flagpole made of bamboo, which has been used since ancient times. [Background technology]

[0002] Traditionally, flag banners, which are basically made of vertically long rectangular fabric, have been fixed at the top and two long sides to a bamboo or wooden pole, or a metal or resin pole, via a loop-shaped "chichi" sewn to the fabric. Since flag banners are generally used outdoors and are exposed to wind and rain, the pole or pole on which they are attached must be strong and durable.

[0003] The following Patent Document 1 discloses a flagpole for flagpole that has high strength and can be disassembled and assembled. This flagpole for flagpole consists of a main post made of inner and outer metal tubes, and a horizontal pole that can be attached and detached to the tip of the inner tube, and the lower end of the inner tube that can be fitted into the outer tube is formed with a flange leaving a certain length of insertion part, and a horizontal pole holder that can fix the horizontal pole via a cap is attached rotatably to the tip of the inner tube.

[0004] The following Patent Document 2 discloses a wooden flagpole that is made up of a vertical pole whose lower end is supported by a base and that is set approximately perpendicular to the ground, and a horizontal pole whose base end is detachably attached to the upper end of the vertical pole, and that holds the piece of cloth by inserting the vertical pole and the horizontal pole into hanging rings provided on the piece of cloth. This flagpole has a lacquer finish applied to it to make the surface of the flagpole sturdy and to make the decoration less likely to peel off, as well as to prevent the adhesion of oils and dirt from hands.

[0005] The following Patent Document 3 discloses a flag banner device that is set up in front of a store or along a street for advertising purposes. This device has a flagpole with a small diameter pole and a large diameter pole attached to one side edge and the top edge of the flag area, a flagpole with a small diameter pole and a large diameter pole is passed through the flagpole located at one side edge of the flag area, a horizontal pole is passed through the flagpole located at the top edge, the horizontal pole is attached to the top end of the flagpole via a rotating member so as to be freely rotatable around the axis of the flagpole, and a tensioning core is attached to one side edge of the flag area so as to be positioned along that side edge. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 59-89386 [Patent Document 2] Utility Model Registration No. 3200805 [Patent Document 3] Japanese Patent Application Publication No. 9-281915 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0007] Bamboo, a natural material that has been used since ancient times as a material for flagpole attachment, is not only lightweight and beautiful, but also has excellent strength and durability. However, it requires time and effort in terms of processing, productivity, and mass production. In addition, with the recent promotion of the SDGs (Sustainable Development Goals), there is now room to reconsider the material of flagpole attachment in order to ensure a sustainable production and consumption pattern.

[0008] The flagpole disclosed in Patent Document 1 has a metal main pole, which is therefore inferior in terms of weight and aesthetics. In addition, there is a risk of sudden damage or breakage due to deterioration caused by metal fatigue.

[0009] The wooden flagpole disclosed in Patent Document 2 is also inferior in terms of weight and aesthetics. In terms of durability, there is also a risk of sudden damage or breakage due to the nature of the material.

[0010] The flag banner device disclosed in Patent Document 3 is easily assumed to be made of synthetic materials, and is therefore inferior in terms of aesthetics and weight.

[0011] The present invention was made in consideration of the above circumstances, and aims to provide a flagpole that eliminates the above-mentioned problems and is made specifically for use with bamboo, a material that is superior not only in terms of weight and aesthetics, but also in strength and durability. Another object of the present invention is to provide a flagpole mounting system that has a simple structure, is easy to process and assemble, and has improved productivity and mass production capabilities. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention has the following configuration.

[0013] (1) A flag pole comprising a bamboo vertical rod having knots and to which one long side of a flag having a rectangular planar shape is detachably attached via four or more attachment parts made of a durable material and spaced at predetermined intervals, and a bamboo horizontal rod having knots and to which one short side of the flag is detachably attached via three or more attachment parts made of a durable material and spaced at predetermined intervals, The cross-sectional diameter of the vertical bar is at least 30 mm, the cross-sectional diameter of the horizontal bar is tapered, the cross-sectional diameter of the tip side is less than 15 mm and the cross-sectional diameter of the other side is 15 mm or more, the length ratio of the vertical bar to the horizontal bar is 9:2, a through hole portion having a circular planar shape with a diameter of 15 mm is drilled at a position 30 mm from the nearest node on one end side of the vertical bar, and the tip side of the horizontal bar is pushed into and fixed in this through hole portion so as to be freely inserted and removed.

[0014] (2) A flag pole comprising a vertical bamboo rod with a joint and a cross-sectional diameter of at least 30 mm to which one long side of the flag, which has a rectangular planar shape, is detachably attached via four or more attachment parts made of a material having strength and durability and arranged at specified intervals, and a horizontal bamboo rod with joints and a tapered shape with a cross-sectional diameter of less than 15 mm at the tip side and a cross-sectional diameter of 15 mm or more at the other side of the tip side, to which one short side of the flag is detachably attached via three or more attachment parts made of a material having strength and durability and arranged at specified intervals, A first circular hole having a diameter of 5 mm is drilled on one end side of the vertical bar at a position 37.5 mm from the nearest node, a second circular hole having a diameter of 10 mm is drilled above the first hole at a position 35 mm from the nearest node of the vertical bar, and a third circular hole having a diameter of 15 mm is drilled above the second hole at a position 30 mm from the nearest node of the vertical bar to form a through hole, and the tip end of the horizontal bar is inserted and fixed into this through hole so that it can be removed, thereby manufacturing a flagpole mounting pole.

[0015] According to the above-mentioned configuration, it is possible to provide a flag pole which is excellent not only in terms of weight and aesthetics, but also in terms of strength and durability.

[0016] Furthermore, the above-mentioned configuration has an extremely simple and compact structure, which facilitates processing and assembly, and is advantageous in terms of productivity, mass production, and economic efficiency.

[0017] Furthermore, according to the above configuration, the use of bamboo as a material is consistent with ensuring sustainable production and consumption patterns as part of the SDGs. Effect of the Invention

[0018] According to the present invention, it is possible to provide a flag pole and a method of manufacturing a flag pole that is specialized for bamboo, a material that is excellent not only in terms of weight and aesthetics but also in strength and durability, thereby achieving practical effects. In addition, the flagpole of the present invention has an extremely simple and compact structure, which allows easy processing and assembly, and is excellent in terms of productivity and mass production, resulting in excellent economic efficiency. [Brief description of the drawings]

[0019] [Figure 1] 1 is an overall view showing a flag pole according to an embodiment of the present invention; [Diagram 2] 1A and 1B are diagrams showing cross sections of a vertical bar and a horizontal bar in the same embodiment, where FIG. 1A is a diagram showing a cross section of a vertical bar, and FIG. 1B is a diagram showing a cross section of a horizontal bar. [Diagram 3] FIG. 11 is a diagram showing a schematic view of the main part of the attachment state of the vertical bar and the horizontal bar in the embodiment. [Figure 4] 5A and 5B are diagrams illustrating a through-hole portion formed in a vertical bar in the embodiment, in which (a) is a front view of the through-hole portion, and (b) is a side view of the through-hole portion. [Diagram 5] 1A and 1B are diagrams showing the process of drilling a through hole portion in the same embodiment, where (a) is a diagram showing the process of drilling a first hole portion, (b) is a diagram showing the process of drilling a second hole portion, and (c) is a diagram showing the process of drilling a third hole portion. [Figure 6] 11A and 11B are diagrams illustrating an example of a flagpole mounting pole installed in accordance with the embodiment, in which (a) shows the pole mounted on a base, and (b) shows the pole mounted on a fence. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] The flagpole 10 according to this embodiment is made of natural bamboo and is used as a flagpole or advertising material for the purpose of enhancing a unique psychological effect at shrines, temples, religious facilities, etc.

[0022] That is, the flag pole 10 is provided with a cylindrical bamboo vertical rod 20 having a joint 20a, to which one long side 40a of the flag 40, which has a rectangular planar shape, is detachably attached via a pair of attachment parts 50 made of a material having strength and durability and four or more of which are provided at predetermined intervals, and a cylindrical bamboo horizontal rod 30 having a joint 30a, to which one short side 40b of the flag 40 is detachably attached via a pair of attachment parts 50 made of a material having strength and durability and three or more of which are provided at predetermined intervals, and the cross section of the vertical rod 20 excluding the joint 20a is provided with a pair of attachment parts 50 made of a material having strength and durability and three or more of which are provided at predetermined intervals, and the cross section of the vertical rod 20 is provided with a pair of attachment parts 50 made of a material having strength and durability and three or more of which are provided at predetermined intervals, and the cross section of the vertical rod 20 excluding the joint 20a is provided with a pair of attachment parts 50 made of a material having strength and durability and ... The diameter VD of the surface is at least 30 mm, the cross bar 30 is tapered and the diameter HD1 of the cross section excluding the node 30a portion on the tip 30b side is less than 15 mm, and the diameter HD2 (not shown) of the cross section other than the tip 30b side is 15 mm or more, the length ratio L:W of the vertical bar 20 and the horizontal bar 30 is 9:2, a through hole portion 26 having a circular planar shape with a diameter (R) of 15 mm is drilled on one end 20b side of the vertical bar 20 at a position 30 mm (D) from the nearest node, and the tip 30b side of the cross bar 30 is inserted and removably pushed into the through hole portion 26 to be fixed. In this specification, the “closest node” refers to a portion of the bamboo that is used as a reference point, and refers to the node that is closest to the through-hole portion 26 .

[0023] The vertical bar 20 is a cylindrical natural bamboo having a vertical length L of 3,600 mm (see FIG. 1) and a horizontal cross-sectional diameter VD of at least 30 mm (see FIG. 2(a)). At a position 30 mm (D) below the nearest node 20a on one end 20b side of the vertical bar 20, a cylindrical through-hole 26 having a planar shape of a circle with a diameter (R) of 15 mm is drilled.

[0024] The horizontal bar 30 is tapered toward the tip 30b, and has a horizontal length W of 800 mm (see FIG. 1). The diameter HD1 of the cross section in the vertical direction (see FIG. 1) excluding the joint 30a on the tip 30b side of the horizontal bar 30 is less than 15 mm (see FIG. 2(b)), and the diameter HD2 (not shown) of the cross section other than the tip 30b side is 15 mm or more.

[0025] Here, a length ratio L:W of 9:2 between the vertical bar 20 and the horizontal bar 30 is preferable in terms of stability and aesthetics, and in this embodiment, the length L (3,600 mm) of the vertical bar 20 and the length W (800 mm) of the horizontal bar 30 correspond to this ratio.

[0026] The through hole portion 26 has a function of fixing the cross bar 30 in a penetrated state by pushing the tip portion 30b of the cross bar 30 into the through hole portion 26 so as to be freely insertable and removable.

[0027] The flag 40 has a rectangular planar shape, and the top side, which is one long side 40a and one short side 40b, is detachably attached to the vertical bar 20 and the horizontal bar 30 via a loop-shaped attachment part, a nipple 50. In consideration of strength and durability, the flag 40 is generally made of natural materials such as hemp or cotton, or more preferably synthetic materials such as polyester or vinyl, but is not limited to these.

[0028] The twill 50 is made of, for example, a strong, durable, and attractive cloth material, and is sewn to the flag 40 at a predetermined interval on the long side 40a and the short side 40b. In consideration of strength and durability, the material generally used is natural material such as hemp or cotton, or more preferably synthetic material such as polyester or vinyl, but is not limited to these.

[0029] The operation of the above configuration will be described below.

[0030] To assemble the flagpole 10, the horizontal bar 30 is attached to the vertical bar 20. That is, the tip 30b of the horizontal bar 30 is pushed from one opening side of the through-hole portion 26 of the vertical bar 20 toward the other opening side so that it can be inserted and removed freely. Then, the tip 30b side of the horizontal bar 30 appears from the other opening side of the through-hole portion 26.

[0031] As the horizontal bar 30 is continued to be pushed in, the diameter HD2 of the cross section of the tapered horizontal bar 30 other than the tip 30b side is 15 mm or more, and therefore is larger than the diameter R of one opening side of the through-hole portion 26. Here, the horizontal bar 30 is fixed by being pushed into the through-hole portion 26 to an extent that does not damage the opening and being held in a pressure-welded state. Thus, the horizontal bar 30 is attached to the vertical bar 20, and the assembly of the flag pole 10 is completed.

[0032] Thereafter, the flag 40 is attached to the vertical rod 20 and the horizontal rod 30 via the hook 50, and the attachment of the flag 40 to the flag attachment pole 10 is completed.

[0033] To disassemble the assembled flag pole 10, the tie rod 50 is removed from the vertical rod 20 and the horizontal rod 30, and the flag 40 is removed from the flag pole 10.

[0034] Next, the horizontal bar 30, which has been pushed and fixed into the through-hole portion 26, is moved in the opposite direction from the tip portion 30b so as to be pulled out of the through-hole portion 26, whereby the attachment is released and the vertical bar 20 and the horizontal bar 30 are disassembled.

[0035] The process of forming the through hole 26 drilled in the vertical bar 20 will be described below.

[0036] First, a first hole 22 having a circular opening shape and a diameter of 5 mm (R1) is drilled using a 5 mm diameter drill bit at a position 37.5 mm (D1) away from the nearest node 20a on one end side of the vertical bar 20 (see FIG. 5(a)).

[0037] Next, a second hole 24 having a circular opening shape and a diameter of 10 mm (R2) is drilled using a 10 mm diameter drill bit at a position that is identical to the center of the first hole 22 and 35 mm (D2) from the nearest node 20a of the vertical bar 20 (see Figure 5 (b)).

[0038] Next, a third hole portion is drilled at a position that is the same as the center portion of the second hole portion 24 and 30 mm (D) from the nearest node 20a of the vertical bar 20 using a drill bit with an opening diameter of 15 mm, so that the third hole portion is a circular through hole portion 26 with a diameter of 15 mm (R).

[0039] Finally, any splinters that were generated during drilling or that are inherent to the bamboo are removed using a sander or electric saw, and the area around the opening of the through hole 26 is polished to make it even. Thus, the through hole 26 is completed.

[0040] In this embodiment, the through hole 26 is drilled at a position 30 mm from the nearest node on one end side of the vertical bar 20 because this position is less likely to splinter on the vertical bar 20 and is therefore suitable for machining.

[0041] The flagpole 10 completed as described above can be used, for example, by erecting the vertical rod 20 on the base 60 (see FIG. 6(a)). Alternatively, the vertical rod 20 can be attached to a fence 70 via mounting members 80, 80.

[0042] According to the above embodiment, the vertical rod 20 and the horizontal rod 30 are made of natural bamboo, making it possible to provide a flag pole 10 that is excellent not only in terms of weight and aesthetics, but also in strength and durability.

[0043] Furthermore, according to the above embodiment, it is possible to provide a flag pole 10 which has an extremely simple and compact structure, is easy to process, assemble and disassemble, and is advantageous in terms of productivity, mass production, economy and handling.

[0044] Furthermore, according to the above embodiment, since natural bamboo is used as the material, it is useful in contributing to ensuring sustainable production and consumption patterns of the SDGs.

[0045] The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present invention. [Explanation of symbols]

[0046] 10 ... Flag pole 20 ... Vertical bar Verse 20a... 22 ... First hole 24 ... second hole 26 ...Through hole section 30 ... horizontal bar Verse 30a... 30b...Tip 40 ... Flag 50 ... Chichi (mounting part)

Claims

1. A flag pole comprising a bamboo vertical rod having knots and attached detachably to one long side of a flag having a rectangular planar shape via four or more attachment parts made of a material having strength and durability and spaced at predetermined intervals, and a bamboo horizontal rod having knots and attached detachably to one short side of the flag via three or more attachment parts made of a material having strength and durability and spaced at predetermined intervals, The cross-sectional diameter of said vertical bar is at least 30 mm; The horizontal bar is tapered, the diameter of the cross section on the tip side is less than 15 mm, and the diameter of the cross section other than the tip side is 15 mm or more, The length ratio of the vertical bar to the horizontal bar is 9:

2. A through hole having a circular shape with a diameter of 15 mm in plan view is drilled at a position 30 mm away from the nearest node on one end side of the vertical bar, The flagpole mounting pole is characterized in that the tip end of the horizontal bar is inserted and fixed into the through hole in a removable manner.

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