Pillars and covers

Abstract

The challenge is to avoid the formation of a groove or gap between the first and second covering materials. [Solution] The pillar (1) comprises a support body (3), a first cover material (20) fixed to the support body (3) around the support body (3) and forming a semi-cylindrical shape around the central axis of the support body (3), and a second cover material (20) that is fixed to the support body (3) around the support body (3) and forms a semi-cylindrical shape around the central axis of the support body (3) and is combined with the first cover material (20) to form a cylindrical shape together with the first cover material (20). 40), first flanges (26, 27) protruding inward from the edge of the opening of the cavity (20a) of the first cover material (20), second flanges (46, 47) protruding inward from the edge of the opening of the cavity (40a) of the second cover material (40) and abutting against the first flanges (26, 27), and a hook joint (60) joining the first flanges (26, 27) and the second flanges (46, 47).

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a pillar and a cover. [Background technology]

[0002] Patent Document 1 discloses a decorative material for freestanding columns that is attached to freestanding columns of a building. This freestanding decorative material is basically composed of four base materials and four cover materials. The base materials are strip-shaped members. The base materials have flanges on their side edges. The flanges are formed by bending the sides of the base material perpendicularly to the back side of the base material. The base material has two vertical ribs between its side edges. These vertical ribs extend vertically. The vertical ribs are provided in a convex shape on the front side of the base material. These vertical ribs are provided in a concave shape on the back side of the base material. Notches are formed on the opposing side surfaces of the vertical ribs. The notches penetrate all the way to the back side of the vertical rib. In one of the vertical ribs, a hole is formed that continues from the notch to the convex top surface of the vertical rib. The hole also penetrates all the way to the back side of the vertical rib. The flange of the base material is hooked onto the rectangular independent column, the back side of the base material is placed against the side of the independent column, and the base material is fastened to the independent column with screws. The cover material is formed in a mountain shape. The cover material has a thickness surface, a water-stop material mounting surface, and a locking edge on both sides of the edge. The thickness surface is formed by bending the side of the cover material perpendicularly to the back side. The water-stop material mounting surface is formed by bending the thickness surface perpendicularly to the back side of the cover material. The locking piece is formed in a convex shape on the edge of the water-stop material mounting surface. When attaching the cover material, the locking piece on one side of the cover material is hooked onto one of the notches in the base material, and the cover material is rotated around the hook as an axis toward the corner of the independent column, and the locking piece on the other side of the cover material is inserted into the hole in the adjacent base material. The locking piece is then dropped into the lower notch, fitting each locking piece into the notch, firmly securing the cover material across the two base materials. Because adjacent coverings are spaced apart, vertical grooves are formed between the coverings, which detract from the aesthetic appearance of the decorative column. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-28235 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem that the technology disclosed in this specification aims to solve is to prevent a groove or gap from being formed between the first cover material and the second cover material that cover the support body. [Means for solving the problem]

[0005] In order to solve the above problems, this specification discloses the following shelf and shelf board installation method. The following reference numerals in parentheses are referenced in Figures 1 to 24. The reference numerals in parentheses are provided to facilitate understanding of the means for solving the problems, and the scope of the present invention is not limited to the examples in the drawings.

[0006] (Section 1) A support body (3), a first cover material (20) fixed to the support body (3) around the support body (3), formed in a semi-cylindrical shape around the central axis of the support body (3), and having an open cavity (20a) inside; a second cover material (40) that is formed around the support body (3) in a semi-cylindrical shape around the central axis of the support body (3), that is combined with the first cover material (20) to form a cylindrical shape together with the first cover material (20), and that has an internal cavity (40a) that opens to face the opening of the cavity (20a) of the first cover material (20); a first flange (26 or 27) protruding inward from the edge of the opening of the cavity (20a) of the first cover material (20); a second flange (46 or 47) that protrudes inward from the edge of the opening of the cavity (40a) of the second cover material (40) and abuts against the first flange (26 or 27); a hook joint (60) connecting the first flange (26 or 27) and the second flange (46 or 47); A pillar (1) comprising:

[0007] According to paragraph 1, the semi-cylindrical second cover material (40) is combined with the semi-cylindrical first cover material (20), so that the first cover material (20) and the second cover material (40) together form a cylindrical shape, and the second flange (46 or 47) is abutted against the first flange (26 or 27), so that no groove or gap is formed between the first cover material (20) and the second cover material (40), particularly between the first flange (26 or 27) and the second flange (46 or 47). This improves the aesthetic appearance of the pillar (1). The first cover material (20) is fixed to the support body (3), and the first flange (26 or 27) and the second flange (46 or 47) are joined by a hook joint (60), thereby attaching the first cover material (20) and the second cover material (40) to the support body (3).

[0008] (Section 2) The hook joint (60) a hook (64 or 65) protruding obliquely downward from the second flange (46 or 47) toward the first flange (26 or 27); a hook portion (62 or 63) formed in the first flange (26 or 27) in the shape of a hole or a notch; and The hook (64 or 65) is passed through the hooked portion (62 or 63), and the hook (64 or 65) is hooked onto the lower edge of the hooked portion (62 or 63). 3. A pillar (1) as described in paragraph 2.

[0009] According to paragraph 2, the hook (64 or 65) is passed through the hooked portion (62 or 63), and the hook (64 or 65) is hooked onto the lower edge of the hooked portion (62 or 63), thereby joining the first flange (26 or 27) and the second flange (46 or 47). Even if the hook (64 or 65) protrudes from the second flange (46 or 47) toward the first flange (26 or 27), the hook (64 or 65) is passed through the hooked portion (62 or 63), and therefore the hook (64 or 65) is not pinched between the first flange (26 or 27) and the second flange (46 or 47). The hook (64 or 65) does not cause a groove or gap to be formed between the first flange (26 or 27) and the second flange (46 or 47). Because the hook (64 or 65) protrudes obliquely downward from the second flange (46 or 47) toward the first flange (26 or 27), the hook (64 or 65) acts to guide the second flange (46 or 47) toward the first flange (26 or 27) due to the load of the second cover material (40) and the second flange (46 or 47). The hook (64 or 65) firmly keeps the second flange (46 or 47) abutted against the first flange (26 or 27), making it difficult for the hook (64 or 65) to come off the hooked portion (62 or 63).

[0010] (Section 3) The hook (64 or 65) wraps around the back of the first flange (26 or 27) under the hooked portion (62 or 63), and the first flange (26 or 27) is sandwiched between the hook (64 or 65) and the second flange (46 or 47). 3. A pillar (1) as described in paragraph 2.

[0011] According to paragraph 3, the hook (64 or 65) firmly keeps the second flange (46 or 47) pressed against the first flange (26 or 27), and the hook (64 or 65) is less likely to come off the hooked portion (62 or 63).

[0012] (Section 4) The hook joint (60) a hook (64A) protruding obliquely upward from the first flange (26 or 27) toward the second flange (46 or 47); a hook portion (62A) formed in the second flange (46 or 47) in the shape of a hole or a notch; and The hook (64A) is passed through the hooked portion (62A), and the hook (64A) is hooked onto the upper edge of the hooked portion (62A). 2. A pillar (1) as described in paragraph 1.

[0013] According to paragraph 4, the hook (64A) is passed through the hooked portion (62A) and the hook (64A) is hooked onto the upper edge of the hooked portion (62A), thereby joining the first flange (26 or 27) and the second flange (46 or 47). Even if the hook (64A) protrudes from the first flange (26 or 27) toward the second flange (46 or 47), the hook (64A) passes through the hooked portion (62A), and therefore the hook (64A) is not pinched between the first flange (26 or 27) and the second flange (46 or 47). The hook (64A) does not cause a groove or gap to be formed between the first flange (26 or 27) and the second flange (46 or 47). Because the hook (64A) protrudes obliquely upward from the first flange (26 or 27) toward the second flange (46 or 47), the hook (64A) acts to guide the second flange (46 or 47) toward the first flange (26 or 27) due to the load of the second cover material (40) and the second flange (46 or 47). The hook (64A) firmly keeps the second flange (46 or 47) abutted against the first flange (26 or 27), making it difficult for the hook (64A) to come off the hooked portion (62A).

[0014] (Section 5) The hook (64A) wraps around the back of the second flange (46 or 47) on the hooked portion (62A), and the second flange (46 or 47) is sandwiched between the hook (64A) and the first flange (26 or 27). 5. A pillar (1) according to claim 4.

[0015] According to the fifth aspect, the hook (64A) firmly keeps the second flange (46 or 47) abutted against the first flange (26 or 27), and the hook (64A) is unlikely to come off the hooked portion (62A).

[0016] (Section 6) A contact piece (28 or 29) protruding from the edge of the first flange (26 or 27) toward the cavity (40a) of the second cover material (40). Further provided with The contact piece (28 or 29) is directly or indirectly contacted with the outer periphery of the support body (3), and the screw (32 or 33) is driven into the contact piece (28 or 29) and the support body (3), and the head of the screw (32 or 33) is fitted into the cavity (40a) of the second cover material (40). A pillar (1) according to any one of items 1 to 5.

[0017] According to paragraph 6, the pad (28 or 29) protrudes from the edge of the first flange (26 or 27) toward the cavity (40a) of the second cover material (40), so the pad (28 or 29) is hidden inside the second cover material (40). The heads of the screws (32 or 33) fit inside the cavity (40a) of the second cover material (40), so the heads of the screws (32 or 33) are hidden inside the second cover material (40). The pad (28 or 29) and the screws (32 or 33) do not detract from the aesthetic appearance of the pillar (1).

[0018] (Section 7) A stopper (34 or 35) that protrudes from the first flange (26 or 27) toward the second flange (46 or 47) and receives the second flange (46 or 47) from below. The pillar (1) according to any one of claims 2 to 4, further comprising:

[0019] According to paragraph 7, even if the second flange (46 or 47) and the second cover material (40) are subjected to an excessive downward load, the second flange (46 or 47) and the second cover material (40) are supported by the stopper (34 or 35). The stopper (34 or 35) prevents damage to the hook (64, 65 or 64A) due to the excessive downward load of the second flange (46 or 47) and the second cover material (40).

[0020] (Section 8) a first upper cover material (120) that is fixed to the support body (3) on top of the first cover material (20) and around the support body (3), has a semi-cylindrical shape around the central axis of the support body (3), and has an open cavity (120a) inside; a second upper cover material (140) that is formed on the second cover material (40) and around the support body (3) in a semi-cylindrical shape around the central axis of the support body (3), and that is combined with the first upper cover material (120) to form a cylindrical shape together with the first upper cover material (120), and that has an internal cavity (140a) that opens to face the opening of the cavity (120a) of the first upper cover material (120); a pair of clamper receivers (131L and 131R) attached to the first upper cover material (120) in the cavity (120a) of the first upper cover material (120) and disposed on both sides of the support column body (3); a clamper (147) attached to the second upper cover material (140) in the cavity (140a) of the second upper cover material (140), inserted from the cavity (140a) of the second upper cover material (140) into the cavity (120a) of the first upper cover material (120), and clamping the pair of clamper receivers (131L and 131R) from both sides of the support body (3); The pillar (1) according to any one of claims 2 to 4, comprising:

[0021] According to paragraph 8, the semi-cylindrical second upper cover material (140) is combined with the semi-cylindrical first upper cover material (120), so that the first upper cover material (120) and the second upper cover material (140) form a cylindrical shape together, and no groove or gap is formed between the first upper cover material (120) and the second upper cover material (140). This improves the aesthetic appearance of the pillar (1). If the second cover material (40) needs to move downward when it is attached to the first cover material (20), a space to ensure this movement is required above the second cover material (40). The support body (3) is covered by the second upper cover material (140) in this space. The clamper (147) is inserted from the cavity (140a) of the second upper cover material (140) into the cavity (120a) of the first upper cover material (120), and the clamper (147) clamps the pair of clamper receivers (131L and 131R) from both sides of the support body (3). Therefore, when the second upper cover material (140) is assembled to the first upper cover material (120), the movement of the second upper cover material (140) is in a radial direction perpendicular to the up-down direction. Therefore, even if there is no space above or below the second upper cover material (140), the second upper cover material (140) can be assembled to the first upper cover material (120).

[0022] (Section 9) The clamper (147) passes from the cavity (140a) of the second upper cover material (140) to the side of the pair of clamper receivers (131L and 131R), goes around to the back of the pair of clamper receivers (131L and 131R), and is caught on the back of the pair of clamper receivers (131L and 131R). 8. A pillar (1) according to claim 8.

[0023] According to paragraph 9, the clamper (147) goes around to the back of the pair of clamper receivers (131L and 131R) and the clamper (147) gets caught on the back of the pair of clamper receivers (131L and 131R), so the clamper (147) is not easily detached from the pair of clamper receivers (131L and 131R), and the second upper cover material (140) is not easily detached from the first upper cover material (120).

[0024] (Section 10) a first cover material (20) formed in a semi-cylindrical shape around an axis and having an open cavity (20a) inside; a second cover material (40) formed in a semi-cylindrical shape around the axis, combined with the first cover material (20) to form a cylindrical shape together with the first cover material (20), and having an internal cavity (40a) that opens to face the opening of the cavity (20a) of the first cover material (20); a first flange (26 or 27) protruding inward from the edge of the opening of the cavity (20a) of the first cover material (20); a second flange (46 or 47) that protrudes inward from the edge of the opening of the cavity (40a) of the second cover material (40) and abuts against the first flange (26 or 27); a hook joint (60) connecting the first flange (26 or 27) and the second flange (46 or 47); A cover (10) comprising:

[0025] According to paragraph 10, the semi-cylindrical second cover material (40) is combined with the semi-cylindrical first cover material (20), so that the first cover and the second cover material (40) together form a cylindrical shape, and the second flange (46 or 47) is abutted against the first flange (26 or 27), so that no groove or gap is formed between the first cover material (20) and the second cover material (40), particularly between the first flange (26 or 27) and the second flange (46 or 47).This results in a good appearance of the cover.

[0026] (Section 11) The hook joint (60) a hook (64 or 65) protruding obliquely from the second flange (46 or 47) toward the first flange (26 or 27) with respect to the axial direction; a hook portion (62 or 63) formed in the first flange (26 or 27) in the shape of a hole or a notch; and The hook (64 or 65) is passed through the hooked portion (62 or 63), and the hook (64 or 65) is hooked onto the edge of the hooked portion (62 or 63). 10. A cover (10) as described in paragraph 10.

[0027] According to paragraph 11, the first flange (26 or 27) and the second flange (46 or 47) are joined by passing the hook (64 or 65) through the hooked portion (62 or 63) and hooking the hook (64 or 65) onto the edge of the hooked portion (62 or 63). Even if the hook (64 or 65) protrudes from the second flange (46 or 47) toward the first flange (26 or 27), the hook (64 or 65) is passed through the hooked portion (62 or 63), and therefore the hook (64 or 65) is not pinched between the first flange (26 or 27) and the second flange (46 or 47). The hook (64 or 65) does not cause a groove or gap to be formed between the first flange (26 or 27) and the second flange (46 or 47). Because the hooks (64 or 65) protrude obliquely from the second flange (46 or 47) toward the first flange (26 or 27) in the axial direction, the hooks (64 or 65) act to guide the second flange (46 or 47) toward the first flange (26 or 27). The hooks (64 or 65) firmly keep the second flange (46 or 47) abutted against the first flange (26 or 27), making it difficult for the hooks (64 or 65) to come off the hooked portion (62 or 63).

[0028] (Section 12) The hook (64 or 65) wraps around the hooked portion (62 or 63) to the back of the first flange (26 or 27), and the first flange (26 or 27) is sandwiched between the hook (64 or 65) and the second flange (46 or 47). 12. A cover (10) as described in paragraph 11.

[0029] According to paragraph 12, the hook (64 or 65) firmly keeps the second flange (46 or 47) pressed against the first flange (26 or 27), and the hook (64 or 65) is less likely to come off the hooked portion (62 or 63). [Effects of the Invention]

[0030] No grooves or gaps are formed between the first cover material and the second cover material, particularly between the first flange and the second flange, and the appearance of the pillar and cover is good. [Brief explanation of the drawings]

[0031] [Figure 1] FIG. 1 is a perspective view of a pillar. [Figure 2] FIG. 2 is a cross-sectional view taken along horizontal section II-II. [Figure 3] FIG. 3 is a cross-sectional view taken along the horizontal section III-III. [Figure 4] FIG. 4 is a top view of the first cover material. [Figure 5] FIG. 5 is a right side view of the first cover material. [Figure 6] FIG. 6 is a rear view of the first cover material. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII. [Figure 8] FIG. 8 is an enlarged view of region VIII. [Figure 9] FIG. 9 is an enlarged view of region IX. [Figure 10] FIG. 10 is a cross-sectional view of the end surface along line XX. [Figure 11] FIG. 11 is a top view of the second cover material. [Figure 12] FIG. 12 is a right side view of the second cover material. [Figure 13] FIG. 13 is a front view of the second cover material. [Figure 14] FIG. 14 is a cross-sectional view taken along line XIV-XIV. [Figure 15] FIG. 15 is an enlarged view of region XV. [Figure 16] FIG. 16 is a cross-sectional view taken along line XVI-XVI. [Figure 17] FIG. 17 is a cross-sectional view of a modified example. [Figure 18] FIG. 18 is an enlarged view of region XVIII. [Figure 19] FIG. 19 is a top view of the first upper cover material. [Figure 20] FIG. 20 is a front view of the first upper cover material. [Figure 21] FIG. 21 is a right side view of the first upper cover material. [Figure 22] FIG. 22 is a top view of the second upper cover material. [Figure 23] FIG. 23 is a rear view of the second upper cover material. [Figure 24] FIG. 24 is a right side view of the second upper cover material. DETAILED DESCRIPTION OF THE INVENTION

[0032] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0033] <1. Pillar> Fig. 1 is a perspective view of a pillar 1. Fig. 2 is a cross-sectional view taken along horizontal section II in Fig. 1. Fig. 3 is a cross-sectional view taken along horizontal section III in Fig. 1.

[0034] The pillar 1 is used for, for example, handrails, railings, parapets, fences, carports, decks, gates, gateposts, etc. The pillar 1 may be installed on a balcony or roof of a building such as a house. The pillar 1 may also be installed on the outside of a building, such as an entrance porch, approach, gate, exterior structure, garden, or parking lot.

[0035] The pillar 1 comprises a support body 3, a fireproofing material 5, a waterproof sheet 7, buffer materials 8 and 9, and a cover 10.

[0036] The support body 3 is installed in an upright position. The central axis of the support body 3 extends vertically in the up-down direction. Hereinafter, the direction in which this central axis extends will be referred to as the axial direction. The axial direction will also be referred to as the up-down direction. The direction perpendicular to this central axis will be referred to as the radial direction. The direction around this central axis will be referred to as the circumferential direction.

[0037] The lower end of the support body 3 may be fixed to the installation location so that the support body 3 stands up from the installation location. The upper end of the support body 3 may be fixed to the installation location so that the support body 3 hangs down from the installation location. The support body 3 may be connected to a supported object such as a handrail body, a cross bar, a shelf board, a partition, a coping board, a deck floor, a roof, etc.

[0038] The pole body 3 is made of metal, resin, wood, or lumber. When the pole body 3 is made of metal, the metal may be, for example, stainless steel or aluminum alloy. Wood material refers to a molded or extruded product made from wood fiber. Wood material may be medium density fiberboard (MDF), hard fiberboard (hardboard), or soft fiberboard (insulation board). Wood refers to solid wood, plywood, glued laminated timber, cross-laminated timber (CLT), or laminated veneer lumber (LVL). The pole body 3 may be an assembled part or a single part. The surface of the pole body 3 may be coated with a film such as a paint film, a protective film, or a plating film.

[0039] In the example shown in Fig. 2, the support column body 3 has a hollow space. However, the support column body 3 may be a solid body without a hollow space. In the example shown in Figure 2, the strut body 3 has a rectangular, particularly square, cross-sectional shape. However, the strut body 3 may also have a circular, elliptical, or polygonal cross-sectional shape. The cross-section here refers to a plane perpendicular to the axial direction.

[0040] The fire-retardant material 5 is attached to the outer peripheral surface of the support body 3 with screws or the like. The fire-retardant material 5 may be a non-combustible material, a semi-non-combustible material, or a flame-retardant material. The fire-retardant material 5 is made of a flame-retardant foam board, a concrete board, a brick board, a ceramic board, a cement board, a fiber-reinforced cement board, a glass fiber-mixed cement board, a fiber-mixed calcium silicate board, a steel plate, an aluminum plate, a metal plate, a glass plate, a mortar board, a plaster board, a stone plate, a gypsum board, a rock wool board, or a glass wool board.

[0041] The waterproof sheet 7 is attached to the outer periphery of the fire retardant material 5. The waterproof sheet 7 blocks liquid water. The waterproof sheet 7 may be water resistant. The waterproof sheet 7 may be water repellent. The waterproof sheet 7 may be breathable or non-breathable.

[0042] The cover 10 surrounds the pole body 3 from the outside of the waterproof sheet 7, covering the outer periphery of the pole body 3. The cover 10 is an assembled product. The cover 10 comprises a first cover material 20, a second cover material 40, a first upper cover material 120, and a second upper cover material 140.

[0043] The first cover material 20 extends in the axial direction. The shape of the first cover material 20 in a cross section perpendicular to the axial direction is a groove shape. A groove shape is also called a C-shape or a U-shape. The first cover material 20 forms a semi-rectangular cylindrical shape around the central axis. The first cover material 20 has a cavity 20a inside. The cavity 20a opens toward the second cover material 40.

[0044] The second cover material 40 extends in the axial direction. The cross section of the second cover material 40 perpendicular to the axial direction has a groove shape. The second cover material 40 has a semi-cylindrical shape around the central axis. The second cover material 40 has a cavity 40a inside. The cavity 40a opens toward the first cover material 20.

[0045] The first cover material 20 and the second cover material 40 are assembled together so that the openings of their respective internal cavities 20a, 40a face each other. The assembly of the first cover material 20 and the second cover material 40 has a rectangular frame shape, i.e., a square-shaped overall skeleton, in a cross section perpendicular to the axial direction. In other words, the assembly of the first cover material 20 and the second cover material 40 forms a square tubular shape, particularly a regular square tubular shape. Note that the cover materials 20, 40 may be shaped like half of a cylinder, i.e., a semi-cylinder, and the assembly of the cover materials 20, 40 may form a cylindrical shape.

[0046] The first covering material 20 is attached to the pillar body 3 and the fire-retardant material 5 from the front and sides thereof, surrounding the front half of the pillar body 3 and the fire-retardant material 5. The first covering material 20 is fixed to the pillar body 3 and the fire-retardant material 5 with a plurality of screws 32 and 33. The second covering material 40 is attached to the pillar body 3 and the fire-retardant material 5 from the rear and sides thereof, surrounding the rear half of the pillar body 3 and the fire-retardant material 5. The screws 32 and 33 are arranged inside the second covering material 40. The second covering material 40 is connected to the first covering material 20 by a plurality of hook joints 60. The hook joints 60 generate a load that pulls the second covering material 40 toward the first covering material 20 due to the weight of the second covering material 40. The hook joints 60 will be described in detail later.

[0047] The first upper cover material 120 extends in the axial direction. The shape of the first upper cover material 120 in a cross section perpendicular to the axial direction is a groove shape. The first upper cover material 120 forms a semi-rectangular cylindrical shape around the central axis. The size of the first upper cover material 120 in the axial direction is smaller than the size of the first cover material 20 in the axial direction. The first upper cover material 120 has a cavity 120a inside. The cavity 120a opens toward the second upper cover material 140.

[0048] The second upper cover material 140 extends in the axial direction. The shape of the second upper cover material 140 in a cross section perpendicular to the axial direction is a groove shape. The second upper cover material 140 forms a semi-rectangular cylindrical shape around the central axis. The size of the second upper cover material 140 in the axial direction is smaller than the size of the second cover material 40 in the axial direction. The second upper cover material 140 has a cavity 140a inside. The cavity 140a opens toward the first upper cover material 120.

[0049] The first upper cover material 120 and the second upper cover material 140 are assembled together so that the openings of their respective internal cavities 120a, 140a face each other. The assembly of the first upper cover material 120 and the second upper cover material 140 has a rectangular frame shape, i.e., a square-shaped overall skeleton shape, in a cross section perpendicular to the axial direction. In other words, the assembly of the first upper cover material 120 and the second upper cover material 140 forms a square tubular shape, particularly a regular square tubular shape. Note that the upper cover materials 120, 140 may be shaped like half of a cylinder, i.e., a semi-cylindrical shape, and the assembly of the upper cover materials 120, 140 may form a cylindrical shape.

[0050] The first upper covering material 120 is attached to the pillar body 3 and the fire-retardant material 5 on top of the first covering material 20 so as to surround the front half of the pillar body 3 and the fire-retardant material 5 from the front and sides of the pillar body 3 and the fire-retardant material 5. The first upper covering material 120 is fixed to the pillar body 3 and the fire-retardant material 5 with screws 133L and 133R. The second upper covering material 140 is attached to the pillar body 3 and the fire-retardant material 5 on top of the second covering material 40 so as to surround the rear half of the pillar body 3 and the fire-retardant material 5 from the rear and sides of the pillar body 3 and the fire-retardant material 5. The screws 133L and 133R are arranged inside the second upper covering material 140. The second upper covering material 140 is attached to the first upper covering material 120 with a clamp.

[0051] The upper end of the second cover material 40 abuts against the second upper cover material 140, so that the second upper cover material 140 restricts the upward movement of the second cover material 40. This prevents the connection between the second cover material 40 and the first cover material 20 by the hook joint 60 from being released, and also prevents the second cover material 40 from coming off the first cover material 20.

[0052] <2. First cover material> Fig. 4 is a top view of the first cover material 20. Fig. 5 is a right side view of the first cover material 20. Fig. 6 is a rear view of the first cover material 20. Fig. 7 is a vertical cross-sectional view taken along line VII-VII shown in Fig. 4.

[0053] The first cover material 20 is made of resin, metal, carbon fiber reinforced resin, or a composite of these. For example, the first cover material 20 is made of a vinyl chloride steel plate. That is, the first cover material 20 is obtained by processing a steel plate coated with vinyl chloride.

[0054] The first cover member 20 has a front plate 21 and side plates 22 and 23 .

[0055] The front plate 21 and the side plates 22, 23 are provided in the form of strips extending in the axial direction. The side plates 22, 23 are provided along the left and right edges of the front plate 21, respectively. The side plates 22, 23 extend rearward from the left and right edges of the front plate 21, respectively. The side plates 22, 23 are bent perpendicular to the front plate 21. The side plates 22, 23 are provided parallel to and facing each other in the left-right direction. The combination of the front plate 21 and the side plates 22, 23 has a groove-shaped horizontal cross section, and the combination forms a half-square cylindrical shape.

[0056] The cushioning material 8 is attached to the inner surfaces of the front plate 21 and the side plates 22, 23. The cushioning material 8 is made of a foam material such as styrene foam. The cushioning material 8 maintains the shape of the front plate 21 and the side plates 22, 23.

[0057] The front half of the pillar body 3 and the fire-retardant material 5 are housed inside the combination of the front plate 21 and the side plates 22, 23. The front plate 21 is spaced forward from the pillar body 3 and the fire-retardant material 5 and faces the front of the pillar body 3. The side plates 22, 23 are spaced laterally from the pillar body 3 and the fire-retardant material 5 and face the left and right side surfaces of the pillar body 3, respectively.

[0058] A top end plate 24 is provided integrally with the first cover material 20 at the upper end of the first cover material 20. The top end plate 24 is bent from the upper edge of the front plate 21 or the side plates 22, 23 perpendicularly to the front plate 21 or the side plates 22, 23. The top end plate 24 covers the fire retardant material 5 from above.

[0059] A bottom end plate 25 is provided integrally with the first cover material 20 at the lower end of the first cover material 20. The bottom end plate 25 is bent perpendicularly from the lower edge of the front plate 21 or the side plates 22, 23 to the front plate 21 or the side plates 22, 23. The bottom end plate 25 covers the fire retardant material 5 from below. The top end plate 24 and the bottom end plate 25 are provided facing each other in the vertical direction and parallel to each other.

[0060] A flange 26 protrudes inward from the left edge of the opening of the cavity 20a inside the first cover material 20, and a flange 27 protrudes inward from the right edge of the opening of the cavity 20a inside the first cover material 20. Specifically, the flanges 26 and 27 are provided along the rear edges of the side plates 22 and 23, respectively. The flanges 26 and 27 protrude inward from the rear edges of the side plates 22 and 23, respectively. The flanges 26 and 27 are bent perpendicular to the side plates 22 and 23. The flanges 26 and 27 are provided parallel to the front plate 21.

[0061] The contact pieces 28, 29 are provided along the inner edges of the flanges 26, 27, respectively. The contact pieces 28, 29 protrude rearward from the inner edges of the flanges 26, 27, respectively, and the contact pieces 28, 29 enter the cavity 40a inside the second cover material 40. The contact pieces 28, 29 face the left and right side surfaces of the support main body 3, respectively. The contact pieces 28, 29 are in contact with the left and right side surfaces of the fire-retardant material 5, respectively. Because the fire-retardant material 5 is provided, the contact pieces 28, 29 are indirectly in contact with the side surfaces of the support main body 3 via the fire-retardant material 5. On the other hand, if the fire-retardant material 5 is not provided, the contact pieces 28, 29 may be in direct contact with the side surfaces of the support main body 3, respectively.

[0062] A plurality of holes 30 are formed in the backing piece 28. These holes 30 are arranged at equal intervals in the vertical direction. A plurality of screws 32 are passed through each of the holes 30, and these screws 32 are screwed into the fire-retardant material 5 and the support body 3. A plurality of holes 31 are formed in the backing piece 28. These holes 31 are arranged at equal intervals in the vertical direction. A plurality of screws 33 are passed through each of the holes 31, and these screws 33 are screwed into the fire-retardant material 5 and the support body 3. The screws 32, 33 tighten the backing pieces 28, 29 to the fire-retardant material 5 and the support body 3, thereby fixing the first cover material 20 to the fire-retardant material 5 and the support body 3. The screws 32, 33 fit into a cavity 40a inside the second cover material 40, and the heads of the screws 32, 33 are hidden by the second cover material 40.

[0063] <3. Components of the hook joint provided in the first cover material> FIG. 8 is an enlarged view of region VIII in FIG. The hook joint 60 has a plurality of hooked portions 62, 63. These hooked portions 62, 63 are formed on the rear surface of the first cover material 20. Specifically, the hooked portion 62 is formed on the flange 26, and the hooked portion 63 is formed on the flange 27. The hooked portions 62 are arranged at equal intervals in the vertical direction, and the hooked portions 63 are arranged at equal intervals in the vertical direction. The hooked portions 62, 63 are holes or notches.

[0064] <4. Stopper provided on the first cover material> Fig. 9 is an enlarged view of region IX in Fig. 5. Fig. 10 is a vertical cross-sectional view taken along line XI-XI shown in Fig. 9.

[0065] Stoppers 34, 35 protrude rearward from the rear surface of the first cover material 20. Specifically, stopper 34 protrudes rearward from flange 26, and stopper 35 protrudes rearward from flange 27.

[0066] Stopper 34 rests against the inner surface of flange 26, and fasteners 36, such as rivets, secure stopper 34 to flange 26. A notch or opening 38 is formed in flange 26, and stopper 34 projects through notch or opening 38 behind flange 26. In the same way that stopper 34 is attached to flange 26 in this manner, stopper 35 is attached to flange 27 by fasteners 37, and stopper 35 projects behind flange 27 through a notch or opening 39 formed in flange 27.

[0067] If the flanges 26, 27 have high rigidity, the stoppers 34, 35 may be formed by cutting and raising the flanges 26, 27.

[0068] <5. Second cover material> Fig. 11 is a top view of the second cover material 40. Fig. 12 is a right side view of the second cover material 40. Fig. 13 is a front view of the second cover material 40. Fig. 14 is a vertical cross-sectional view taken along line VII-VII shown in Fig. 4.

[0069] The second cover material 40 is made of resin, metal, carbon fiber reinforced resin, or a composite of these. For example, the second cover material 40 is made of vinyl chloride steel plate.

[0070] The second cover member 40 has a rear plate 41 and side plates 42 and 43 .

[0071] The rear plate 41 and the side plates 42, 43 are provided in the form of strips extending in the axial direction. The side plates 42, 43 are provided along the left and right edges of the rear plate 41, respectively. The side plates 42, 43 extend forward from the left and right edges of the rear plate 41, respectively. The side plates 42, 43 are bent perpendicular to the rear plate 41. The side plates 42, 43 are provided parallel to and facing each other in the left-right direction. The combination of the rear plate 41 and the side plates 42, 43 has a groove-shaped horizontal cross section, and the combination forms a semi-rectangular cylindrical shape.

[0072] A cushioning material 9 made of a foam material is attached to the inner surfaces of the rear plate 41 and the side plates 42 and 43.

[0073] The rear half of the pillar body 3 and the fire-retardant material 5 are housed inside the combination of the rear plate 41 and the side plates 42, 43. The rear plate 41 is spaced rearward from the pillar body 3 and the fire-retardant material 5 and faces the rear surface of the pillar body 3. The side plates 42, 43 are spaced laterally from the pillar body 3 and the fire-retardant material 5 and face the left and right side surfaces of the pillar body 3, respectively. The front edges of the side plates 42, 43 abut the rear edges of the side plates 22, 23 of the first cover material 20, so that the side plate 42 and the side plate 22 are flush, and the side plate 43 and the side plate 23 are flush.

[0074] The top end plate 44 is bent from the upper edge of the rear plate 41 or the side plates 42, 43 perpendicularly to the rear plate 41 or the side plates 42, 43. The top end plate 44 covers the fire retardant material 5 from above.

[0075] The bottom end plate 45 is bent perpendicularly from the lower edge of the rear plate 41 or the side plates 42, 43 to the rear plate 41 or the side plates 42, 43. The bottom end plate 45 covers the fire retardant material 5 from below. The top end plate 44 and the bottom end plate 45 are provided inside the combination of the rear plate 41 and the side plates 42, 43, facing each other in the vertical direction and parallel to each other.

[0076] A flange 46 protrudes inward from the left edge of the opening of the cavity 40a inside the second cover material 40, and a flange 47 protrudes inward from the right edge of the opening of the cavity 40a inside the second cover material 40. Specifically, the flanges 46, 47 are provided along the front edges of the side plates 42, 43, respectively. The flanges 46, 47 protrude inward from the front edges of the side plates 42, 43, respectively. The flanges 46, 47 are bent perpendicular to the side plates 42, 43. The flanges 46, 47 are provided parallel to the rear plate 41.

[0077] The flanges 46, 47 are respectively abutted against the flanges 26, 27 of the first cover member 20. The flanges 46, 47 are joined to the flanges 26, 27 by hook joints 60.

[0078] <6. Components of the hook joint provided in the second cover material> Figure 15 is an enlarged view of area XV in Figure 13. Figure 16 is a vertical cross-sectional view taken along line XVI-XVI shown in Figure 15. Figure 16 illustrates a state in which the second cover material 40 is assembled to the first cover material 20.

[0079] The hook joint 60 has a plurality of hooks 64, 65. The hooks 64, 65 protrude diagonally downward and forward from the front surface of the second cover material 40. Specifically, the hook 64 protrudes diagonally downward and forward from the flange 46, and the hook 65 protrudes diagonally downward and forward from the flange 27, with these hooks 64, 65 oriented at an angle relative to the axial direction.

[0080] Hook 64 rests against the inner surface of flange 46, and fasteners 66, such as rivets, secure hook 64 to flange 46. A notch or opening 68 is formed in flange 46, and hook 64 passes through notch or opening 68 and protrudes forward of flange 46. In the same way that hook 64 is attached to flange 46 in this manner, hook 65 is attached to flange 47 by fastener 67, and its stopper 35 protrudes forward of flange 47 through a notch or opening 69 formed in flange 47.

[0081] The hooks 64, 65 are plate springs. The width of the hooks 64, 65 gradually decreases downward. The hooks 64, 65 are formed in an asymmetrical shape.

[0082] If the flanges 46, 47 have high rigidity, the hooks 64, 65 may be formed by cutting and raising the flanges 46, 47.

[0083] <7. Hook and hooked part> As shown in FIG. 16 , the hook 64 of the second cover material 40 is inserted into the hooked portion 62 from behind the flange 26 of the first cover material 20, and the hook 64 is hooked onto the lower edge of the hooked portion 62. The hook 64 wraps around to the back of the flange 26 below the hooked portion 62, and the flange 26 of the first cover material 20 is sandwiched between the hook 64 and the flange 46 of the second cover material 40. Because the hook 64 elastically deforms due to the weight of the second cover material 40, the elastic force of the hook 64 is applied to the flange 26 as a load that sandwiches the flange 26 of the first cover material 20 between the hook 64 and the flange 46 of the second cover material 40. The elastic force of the hook 64 causes the second cover material 40 to be pulled towards the first cover material 20.

[0084] Similarly, the hook 65 of the second cover material 40 is inserted into the hooked portion 63 from behind the flange 27 of the first cover material 20 , and the hook 65 is hooked onto the lower edge of the hooked portion 63 .

[0085] <8. Modifications of the hook and the hooked part> Fig. 17 is a cross-sectional view of a modified example, and corresponds to Fig. 16.

[0086] As shown in FIG. 17, a hook 64A, which is a leaf spring, may be provided on the flange 26 of the first cover material 20, and a hole-shaped or notched hooked portion 62A may be formed on the flange 46 of the second cover material 40.

[0087] The hooked portions 62A are arranged at equal intervals in the vertical direction. The hooks 64A are placed against the inner surface of the flange 26, and fasteners 66A such as rivets secure the hooks 64A to the flange 26. Notches or openings 68A are formed in the flange 26, and the hooks 64A pass through the notches or openings 68A and protrude to the rear of the flange 26. The hooks 64A protrude diagonally upward and rearward from the flange 26, with the hooks 64a oriented diagonally relative to the axial direction. The hooks 64A are arranged at equal intervals in the vertical direction.

[0088] The hook 64A is inserted into the hooked portion 62A from the front of the flange 46 of the second cover material 40, and the hook 64A is hooked onto the upper edge of the hooked portion 62A. The hook 64A wraps around to the back of the flange 46 above the hooked portion 62A, and the flange 46 of the second cover material 40 is sandwiched between the hook 64A and the flange 26 of the first cover material 20. Because the hook 64A elastically deforms due to the weight of the second cover material 40, the elastic force of the hook 64A is applied to the flange 46 as a load that sandwiches the flange 46 of the second cover material 40 between the hook 64A and the flange 26 of the first cover material 20. The elastic force of the hook 64A causes the second cover material 40 to be pulled towards the first cover material 20.

[0089] Similarly, a hook that is a leaf spring may be provided on the flange 27 of the first cover material 20, and a hole-shaped or notched hooking portion may be provided on the flange 47 of the second cover material .

[0090] <9. Inserted part> FIG. 18 is an enlarged view of region XVIII in FIG. As shown in Fig. 18, inserted portions 54, 55 are formed on the front surface of the second cover material 40. Specifically, inserted portion 54 is formed on flange 46, and inserted portion 55 is formed on flange 47. In the example shown in Fig. 18, inserted portions 54, 55 are notches. However, inserted portions 54, 55 may also be holes.

[0091] As shown in Figure 10, the stopper 34 provided on the first cover material 20 protrudes toward the flange 46 of the second cover material 40. The stopper 34 is inserted into the inserted portion 54. The stopper 34 receives the flange 46 from below within the inserted portion 54. The upper edge of the inserted portion 54 abuts against the stopper 34, thereby determining the relative position of the second cover material 40 with respect to the first cover material 20.

[0092] Similarly, the stopper 35 is inserted into the receiving portion 55. The stopper 35 receives the flange 47 from below within the receiving portion 55.

[0093] <10. How to attach the first and second cover materials> Before attaching the cover 10, the fireproof material 5 is attached to the outer periphery of the support body 3 with screws or the like. The waterproof sheet 7 is wrapped around the fireproof material 5.

[0094] Next, the first covering material 20 is positioned vertically in front of the pillar body 3, with the opening of the cavity 20a of the first covering material 20 facing the outer circumferential surface of the pillar body 3. The first covering material 20 is brought close to the pillar body 3, and the front half of the pillar body 3 and the fire-retardant material 5 are surrounded by the first covering material 20 from the front and sides of the pillar body 3 and the fire-retardant material 5. At this time, the pillar body 3 and the fire-retardant material 5 are inserted between the pads 28, 29, and the pillar body 3 and the fire-retardant material 5 are sandwiched between the pads 28, 29.

[0095] A plurality of screws 32 are passed through each of the plurality of holes 30, and the screws 32 are driven into the fire-retardant material 5 and the support body 3. A plurality of screws 33 are passed through each of the plurality of holes 31, and the screws 33 are driven into the fire-retardant material 5 and the support body 3. In this way, the first cover material 20 is fixed to the fire-retardant material 5 and the support body 3.

[0096] Next, the second covering material 40 is positioned vertically behind the support body 3, and the opening of the cavity 40a in the second covering material 40 is directed toward the outer periphery of the support body 3. The second covering material 40 is then brought close to the support body 3, and the rear half of the support body 3 and the fire-retardant material 5 is surrounded by the second covering material 40 from behind and to the sides of the support body 3 and the fire-retardant material 5. At this time, the flanges 46, 47 of the second covering material 40 are positioned opposite the flanges 26, 27 of the first covering material 20. Furthermore, multiple hooks 64 are inserted into the multiple hooked portions 62 from behind the flange 26, and multiple hooks 65 are inserted into the multiple hooked portions 63 from behind the flange 27. Furthermore, the stoppers 34, 35 are inserted into the inserted portions 54, 55, respectively.

[0097] Next, the second cover material 40 is moved downward. As a result, the hooks 64, 65 hook onto the lower ends of the hooked portions 62, 63. When the second cover material 40 is further moved downward, the hooks 64 guide the flange 46 toward the flange 26, causing the flange 46 to abut against the flange 26. Similarly, the hooks 65 guide the flange 47 toward the flange 27, causing the flange 47 to abut against the flange 27. This guidance is achieved by the inclination of the hooks 64, 65.

[0098] Furthermore, even when the hooks are provided on the flanges 26, 27 of the first cover material 20 and the hooked portions are formed on the flanges 46, 47 of the second cover material 40 as shown in Figure 17, the flanges 46, 47 are guided by the hooks and come into contact with the flanges 26, 27.

[0099] When the flanges 46, 47 abut against the flanges 26, 27, respectively, the lower ends of the inserted portions 54, 55 abut against the stoppers 34, 35. This prevents the second cover material 40 from moving downward.

[0100] <11. First upper cover material> Figure 19 is a top view of the first upper cover material 120. Figure 20 is a front view of the first upper cover material 120. Figure 21 is a right side view of the first upper cover material 120.

[0101] The first upper cover material 120 is made of resin, metal, carbon fiber reinforced resin, or a composite of these. For example, the first upper cover material 120 is made of a vinyl chloride steel plate. That is, the first upper cover material 120 is obtained by processing a steel plate coated with vinyl chloride.

[0102] The first upper cover material 120 has a front plate 121 and side plates 122 and 123 .

[0103] The front plate 121 is rectangular. The side plates 122 and 123 are provided along the left and right edges of the front plate 121, respectively. The side plates 122 and 123 extend rearward from the left and right edges of the front plate 121, respectively. The side plates 122 and 123 are bent perpendicular to the front plate 121. The side plates 122 and 123 are provided parallel to and facing each other in the left-right direction. The combination of the front plate 121 and the side plates 122 and 123 has a groove-shaped horizontal cross section, and the combination forms a half-square cylindrical shape.

[0104] The front plate 121 and the side plates 122, 123 may be formed integrally and continuously with the front plate 21 and the side plates 22, 23 of the first cover material 20. In other words, the first upper cover material 120 may be formed integrally with the first cover material 20.

[0105] The front half of the upper part of the pillar body 3 and the fire-retardant material 5 is fitted inside the combination of the front plate 121 and the side plates 122, 123. The front plate 121 is spaced forward from the pillar body 3 and the fire-retardant material 5 and faces the front of the pillar body 3. The side plates 122, 123 are spaced laterally from the pillar body 3 and the fire-retardant material 5 and face the left and right side surfaces of the pillar body 3, respectively.

[0106] A pair of left and right brackets 127L, 127R are attached to the inside of the first upper cover material 120. Specifically, the left bracket 127L is attached to the convex pieces 124, 126 with fasteners such as rivets or screws, and the right bracket 127R is attached to the convex pieces 125, 126 with a rivet. The convex piece 124 is formed on the inner surface of the side plate 122 and protrudes inward from the inner surface of the side plate 122. The convex piece 125 is formed on the inner surface of the side plate 123 and protrudes inward from the inner surface of the side plate 123. The convex piece 126 is formed on the inner surface of the front plate 121 and protrudes inward from the inner surface of the front plate 121.

[0107] The bracket 127L has an upper receiving portion 128L, a contact portion 129L, a lower receiving portion 130L, and a clamper receiving portion 131L.

[0108] The upper receiving portion 128L is formed in a plate shape. With a portion of the upper receiving portion 128L resting on the protruding pieces 124, 126, the upper receiving portion 128L is fixed to the protruding pieces 124, 126 with fasteners such as rivets or screws. The upper receiving portion 128L protrudes rearward from the cavity 120a of the first upper cover material 120.

[0109] The contact portion 129L is formed in a plate shape. The contact portion 129L is bent perpendicular to the upper receiving portion 128L, and the contact portion 129L hangs down from the right edge of the upper receiving portion 128L. The contact portion 129L protrudes rearward from the cavity 120a of the first upper cover material 120. A hole 132L is formed in the portion of the contact portion 129L protruding from the cavity 120a. The vertical size of the hole 132L is larger than the front-to-back size of the hole 132L. For this reason, the hole 132L is also called an elongated hole.

[0110] The lower support portion 130L is a small, plate-shaped piece. The lower support portion 130L is bent perpendicular to the portion of the contact portion 129L that protrudes from the cavity 120a, and the lower support portion 130L protrudes to the left from the upper edge of the protruding portion. The position of the lower support portion 130L in the vertical direction is lower than the position of the upper support portion 128L in the vertical direction.

[0111] The clamper receiver 131L is a small plate-shaped piece that is bent perpendicular to the upper receiving portion 128L and hangs down from the rear edge of the upper receiving portion 128L.

[0112] The bracket 127R is symmetrical to the bracket 127L. The bracket 127R has an upper receiving portion 128R, an abutting portion 129R, a lower receiving portion 130R, and a clamper receiving portion 131R.

[0113] The upper receiving portion 128R is formed in a plate shape. With a portion of the upper receiving portion 128R resting on the protruding pieces 125, 126, the upper receiving portion 128R is fixed to the protruding pieces 125, 126 with fasteners such as rivets or screws. The upper receiving portion 128R protrudes rearward from the cavity 120a of the first upper cover material 120. The position of the upper receiving portion 120R in the vertical direction is aligned with the position of the upper receiving portion 120L in the vertical direction.

[0114] The contact portion 129R is formed in a plate shape. The contact portion 129R is bent perpendicular to the upper receiving portion 128R, and the contact portion 129R hangs down from the left edge of the upper receiving portion 128R. The contact portion 129R protrudes rearward from the cavity 120a of the first upper cover material 120. A hole 132R is formed in the portion of the contact portion 129R protruding from the cavity 120a. The hole 132R is an elongated hole.

[0115] The lower support portion 130R is a small, plate-shaped piece. The lower support portion 130R is bent perpendicular to the portion of the contact portion 129R that protrudes from the cavity 120a, and the lower support portion 130R protrudes to the left from the upper edge of the protruding portion. The vertical position of the lower support portion 130R is aligned with the vertical position of the lower support portion 130L.

[0116] The clamper receiver 131R is a small plate-shaped piece that is bent perpendicular to the upper receiving portion 128R and hangs down from the rear edge of the upper receiving portion 128R.

[0117] The portions of the abutment portions 129L, 129R that protrude from the cavity 120a of the first upper cover material 120 enter the cavity 140a inside the second upper cover material 140. The abutment portions 129L, 129R face the left and right side surfaces of the pillar main body 3, respectively. The abutment portions 129L, 129R are abutted against the left and right side surfaces of the fire-retardant material 5, respectively. Because the fire-retardant material 5 is provided, the abutment portions 129L, 129R are abutted against the side surfaces of the pillar main body 3 indirectly via the fire-retardant material 5. On the other hand, if the fire-retardant material 5 is not provided, the abutment portions 129L, 129R may be abutted directly against the side surfaces of the pillar main body 3, respectively.

[0118] Screws 133L and 133R are passed through holes 132R and 132L, respectively, and are screwed into the fire-retardant material 5 and the support body 3. The screws 133L and 133R tighten the abutment portions 129L and 129R to the fire-retardant material 5 and the support body 3, thereby fixing the first upper cover material 120 to the fire-retardant material 5 and the support body 3. The screws 133L and 133R fit into a cavity 140a inside the second upper cover material 140, and the heads of the screws 133L and 133R are hidden by the second upper cover material 140.

[0119] The portions of the upper receiving portions 128L, 128R that protrude from the cavity 120a of the first upper cover material 120 fit into the inner cavity 140a of the second upper cover material 140. The clamper receivers 131L, 131R are located within the cavity 140a of the second upper cover material 140. The clamper receiver 131L is located on the left side of the support main body 3, and the clamper receiver 131R is located on the right side of the support main body 3.

[0120] When the first cover material 20 and the first upper cover material 120 are attached to the support main body 3, the upper end of the first cover material 20 abuts against the lower end of the first upper cover material 120. In other words, the lower ends of the front plate 21 and the side plates 22, 23 abut against the lower ends of the front plate 121 and the side plates 122, 123.

[0121] <12. Second upper cover material> Figure 22 is a top view of the second upper cover material 140. Figure 23 is a rear view of the second upper cover material 140. Figure 24 is a right side view of the second upper cover material 140.

[0122] The second upper cover member 140 has a rear plate 141 and side plates 142 and 143 .

[0123] The rear plate 141 is rectangular. The side plates 142, 143 are provided along the left and right edges of the rear plate 141, respectively. The side plates 142, 143 extend forward from the left and right edges of the rear plate 141, respectively. The side plates 142, 143 are bent perpendicular to the rear plate 141. The side plates 142, 143 are provided parallel to and facing each other in the left-right direction. The combination of the rear plate 141 and the side plates 142, 143 has a groove-shaped horizontal cross section, and the combination forms a half-square cylindrical shape.

[0124] The rear half of the upper part of the pillar body 3 and the fire-retardant material 5 is fitted inside the combination of the rear plate 141 and the side plates 142, 143. The rear plate 141 is spaced rearward from the pillar body 3 and the fire-retardant material 5 and faces the rear surface of the pillar body 3. The side plates 142, 143 are spaced laterally from the pillar body 3 and the fire-retardant material 5 and face the left and right side surfaces of the pillar body 3, respectively.

[0125] A clamper 147 is attached to the inside of the second upper cover material 140. The clamper 147 elastically clamps the brackets 127L, 127R, particularly the clamper receivers 131L, 131R, in the left-right direction. This clamping allows the second upper cover material 140 to be assembled to the first upper cover material 120.

[0126] The clamper 147 has left and right clamp pieces 148L, 148R. The left clamp piece 148L is attached to the convex pieces 144, 146 with fasteners such as rivets or screws, and the right clamp piece 148L is attached to the convex pieces 145, 146 with a rivet. The convex piece 144 is formed on the inner surface of the side plate 142 and protrudes inward from the inner surface of the side plate 142. The convex piece 145 is formed on the inner surface of the side plate 143 and protrudes inward from the inner surface of the side plate 143. The convex piece 146 is formed on the inner surface of the rear plate 141 and protrudes inward from the inner surface of the rear plate 141.

[0127] Clamp piece 148L has a claw 149L. Claw 149L is a leaf spring that extends forward and is bent into a left-convex mountain shape. Clamp piece 148R has a claw 149R. Claw 149R is a leaf spring that extends forward and is formed into a right-convex mountain shape. Claw 149R is spaced to the right from claw 146L.

[0128] The clamp piece 148L, particularly its claw 149L, is in contact with the clamper receiver 131L from the left of the clamper receiver 131L. The claw 149L wraps around from behind the clamper receiver 131L, along the left side of the clamper receiver 131L, to the front of the clamper receiver 131L, and the claw 149L is caught on the front surface of the clamper receiver 131L.

[0129] The clamp piece 148R, particularly its claw 149R, is in contact with the clamper receiver 131R from the right of the clamper receiver 131R. The claw 149R wraps around from behind the clamper receiver 131R, along the right side of the clamper receiver 131R, to the front of the clamper receiver 131R, and the claw 149R is hooked onto the front surface of the clamper receiver 131R. The hooking of these claws 149L and 149R prevents the second upper cover material 140 from coming off rearward.

[0130] The lower ends of the clamp pieces 148L, 148R are respectively abutted against the lower receiving portions 130L, 130R from above the lower receiving portions 130L, 130R behind the clamper receiving portions 131L, 131R, and the upper ends of the clamp pieces 148L, 148R are respectively abutted against the upper receiving portions 128L, 128R in front of the clamper receiving portions 131L, 131R. These prevent the second upper cover material 140 from tilting.

[0131] <13. How to install the first and second upper cover materials> After the first cover material 20 is attached and before the second cover material 40 is attached, the first upper cover material 120 is attached to the support body 3. After the second cover material 40 is attached, the second upper cover material 140 is assembled to the first upper cover material 120.

[0132] The first upper cover material 120 is attached as follows. In front of the pillar body 3, the opening of the cavity 120a of the first upper cover material 120 is directed toward the outer peripheral surface of the pillar body 3. The first upper cover material 120 is brought close to the pillar body 3, and the front half of the upper parts of the pillar body 3 and the fire-retardant material 5 are surrounded by the first upper cover material 120 from the front and sides of the pillar body 3 and the fire-retardant material 5. At this time, the pillar body 3 and the fire-retardant material 5 are inserted between the abutment parts 129L, 129R, and the pillar body 3 and the fire-retardant material 5 are sandwiched between the abutment parts 129L, 129R.

[0133] The screws 133L and 133R are passed through the holes 132L and 132R, respectively, and driven into the fireproofing material 5 and the support body 3. This fixes the first cover material 20 to the fireproofing material 5 and the support body 3. Since the holes 132L and 132R are elongated holes, the position of the first upper cover material 120 can be adjusted before the screws 133L and 133R are fully tightened.

[0134] The second upper cover material 140 is attached as follows. Behind the support body 3, the opening of the cavity 140a of the second upper cover material 140 is directed toward the outer peripheral surface of the support body 3, and the lower ends of the clamp pieces 148L, 148R are brought into contact with the lower receiving parts 130L, 130R from above the lower receiving parts 130L, 130R, respectively. After that, when the second upper cover material 140 is moved forward toward the support body 3, the clamp pieces 148L, 148R slide backward on the lower receiving parts 130L, 130R, and the claws 149L, 149R of the clamp pieces 148L, 148R come into contact with the clamper receiving parts 131L, 131R, respectively.

[0135] Thereafter, when the second upper cover material 140 is brought further forward toward the support column main body 3, the claws 149L and 149R elastically deform so as to move away from each other. When the second upper cover material 140 is brought further forward toward the support column main body 3, the claw 149L wraps around the clamper receiver 131L from its left to the front of the clamper receiver 131L, and the claw 149L hooks onto the front surface of the clamper receiver 131L, and the upper end of the claw 149L abuts against the upper receiving portion 128L from below. The claw 149R also wraps around the clamper receiver 131R from its right to the front of the clamper receiver 131R, and the claw 149R hooks onto the front surface of the clamper receiver 131R, and the upper end of the claw 149R abuts against the upper receiving portion 128L from below.

[0136] When the claws 149L and 149R are caught on the front surfaces of the clamper receivers 131L and 131R, respectively, the elastic deformation of the claws 149L and 149R is released, which gives the operator a clicking sensation.

[0137] <14. Summary> (1) The semi-cylindrical second cover material 40 is combined with the semi-cylindrical first cover material 20, so that the first cover material 20 and the second cover material 40 together form a cylindrical shape, and the flanges 46, 47 are abutted against the flanges 26, 27, respectively, so that no grooves or gaps are formed between the first cover material 20 and the second cover material 40, particularly between the flanges 26, 27 and the flanges 46, 47. This results in a good aesthetic appearance for the pillar 1 and the cover 10.

[0138] (2) As shown in FIG. 16, the hooks 64, 65 of the hook joint 60 are passed through the hooked portions 62, 63 of the hook joint 60, respectively, and the hooks 64, 65 are hooked onto the lower edges of the hooked portions 62, 63, thereby joining the first flanges 26, 27 and the second flanges 46, 47.

[0139] (3) Even if the hooks 64, 65 protrude from the flanges 46, 47 toward the flanges 26, 27, the hooks 64, 65 are passed through the hooked portions 62, 63, and therefore the hooks 64, 65 are not pinched between the flanges 26, 27 and the flanges 46, 47. The hooks 64, 65 do not cause a groove or a gap to be formed between the flanges 26, 27 and the flanges 46, 47.

[0140] (4) Because the hooks 64, 65 protrude obliquely downward from the flanges 46, 47 toward the flanges 26, 27, the hooks 64, 65 act to guide the flanges 46, 47 toward the flanges 26, 27 due to the load of the second cover material 40. The hooks 64, 65 firmly maintain the state in which the flanges 46, 47 are abutted against the flanges 26, 27, making it difficult for the hooks 64, 65 to come off the hooked portions 62, 63.

[0141] (5) The hooks 64, 65 wrap around behind the flanges 26, 27 below the hooked portions 62, 63, and the flanges 26, 27 are sandwiched between the hooks 64, 65 and the flanges 46, 47. This firmly keeps the flanges 46, 47 against the flanges 26, 27, making it difficult for the hooks 64, 65 to come off the hooked portions 62, 63.

[0142] (6) The heads of the contact pieces 28, 29 and the screws 32, 33 are hidden inside the second cover material 40. The contact pieces 28, 29 and the screws 32, 33 do not detract from the aesthetic appearance of the pillar 1.

[0143] (7) Even if the second cover material 40 receives an excessive downward load, the flanges 46, 47 of the second cover material 40 are supported by the stoppers 34, 35. The stoppers 34, 35 prevent damage to the hooks 64, 65 due to the excessive downward load of the second cover material 40.

[0144] (8) The semi-cylindrical second upper cover material 140 is combined with the semi-cylindrical first upper cover material 120, so that the first and second upper covers 140 form a cylindrical shape together, and no groove or gap is formed between the first and second upper cover materials 120 and 140. This improves the aesthetic appearance of the pillar 1 and cover 10.

[0145] (9) When assembling the second cover material 40 to the first cover material 20, downward movement of the second cover material 40 is necessary, so a space is required above the second cover material 40 to ensure this movement. The pillar body 3 is covered by the second upper cover material 140 in such a space. This not only improves the aesthetic appearance of the pillar 1 and the cover 10, but also protects the upper part of the pillar body 3.

[0146] (10) The clamper 147 is inserted from the cavity 140a of the second upper cover material 140 into the cavity 120a of the first upper cover material 120, and the clamper 147 clamps the pair of clamper receivers 131L, 131R from both sides of the pillar body 3. Therefore, when the second upper cover material 140 is assembled to the first upper cover material 120, the movement of the second upper cover material 140 is in a radial direction perpendicular to the vertical direction. Therefore, even if there is no space above or below the second upper cover material 140, the second upper cover material 140 can be assembled to the first upper cover material 120. Because the second upper cover material 140 is positioned immediately above and adjacent to the second cover material 40, there is no groove or gap between the second upper cover material 140 and the second cover material 40. This results in a good appearance of the pillar 1 and the cover 10.

[0147] (11) Since the clamper 147 goes around to the back of the pair of clamper receivers 131L, 131R and gets caught on the back of the pair of clamper receivers 131L, 131R, the clamper 147 is difficult to come off the pair of clamper receivers 131L, 131R, and the second upper cover material 140 is difficult to come off the first upper cover material 120.

[0148] (12) The upper end of the clamper 147 abuts against the lower surfaces of the abutting portions 129L and 129R, thereby restricting the upward movement of the second upper cover member 140 and the second cover member 40. Therefore, the hooks 64, 65 do not come off the hooked portions 62, 63, and the second cover material 40 does not come off the first cover material 20.

[0149] (13) The portions of the brackets 127L, 127R that protrude rearward from the cavity 120a of the first upper cover material 120 fit into the cavities 140a, 40a of the second upper cover material 140 and the second cover material 40. The screws 133L, 133R and their heads fit into the cavities 140a, 40a of the second upper cover material 140 or the second cover material 40. This improves the aesthetic appearance of the pillar 1 and the cover 10.

[0150] (14) As shown in FIG. 19 , the flange 26 and the flange 46 are joined by passing the hook 64A through the hooked portion 62A and hooking the hook 64A onto the upper edge of the hooked portion 62A. Even if the hook 64A protrudes from the flange 26 toward the flange 46, the hook 64A is passed through the hooked portion 62A, and therefore the hook 64A is not pinched between the flange 26 and the flange 46. Therefore, the hook 64A does not cause a groove or gap to form between the flange 26 and the flange 46. Because the hook 64A protrudes obliquely upward from the flange 26 toward the flange 46, the hook 64A acts to guide the flange 46 toward the flange 26 due to the load of the second cover material 40. The hook 64A firmly keeps the flange 46 abutted against the flange 26, making it difficult for the hook 64A to come off the hooked portion 62A.

[0151] (15) The pillar body 3 is covered by the cover 10, which extends the life of the pillar body 3. Since the pillar body 3 can be used for a long period of time without being replaced, a carbon-neutral society that effectively reduces carbon dioxide emissions to zero is realized, and the Sustainable Development Goals (SDGs) are achieved.

[0152] (16) The above-disclosed embodiments have been made for the purpose of illustration and example only, and are not intended to limit the scope of the present invention, which should be interpreted by the terms of the claims. [Explanation of symbols]

[0153] 1 Pillar 3. Support body 10 Cover 20 First cover material 26,27 First flange 28,29 Pads 32,33 Bis 34,35 Stopper 40 Second cover material 46,47 Second flange 60 Hook Joint 62, 63, 62A Hooked part 64,65,64A Hook 120 First upper cover material 131L, 131R Clamper holder 140 Second upper cover material 147 Clamper

Claims

1. The support body and a first cover material fixed to the support body around the support body, having a semi-cylindrical shape around the central axis of the support body and an open cavity therein; a second cover material that is formed around the support body in a semi-cylindrical shape around the central axis of the support body, and that is combined with the first cover material to form a cylindrical shape together with the first cover material, and that has an internal cavity that opens to face the opening of the cavity of the first cover material; a first flange protruding inward from an edge of the opening of the cavity of the first cover material; a second flange that protrudes inward from an edge of the opening of the cavity of the second cover material and abuts against the first flange; a hook joint having a hook protruding obliquely downward from the second flange toward the first flange and a hooked portion formed in the first flange in the shape of a hole or a notch, the hook being passed through the hooked portion and hooked onto a lower edge of the hooked portion, connecting the first flange and the second flange; a first upper cover material fixed to the support body on top of the first cover material and around the support body, the first upper cover material having a semi-cylindrical shape around the central axis of the support body and an open cavity therein; a second upper cover material that is on top of the second cover material and around the support body, has a semi-cylindrical shape around the central axis of the support body, and is combined with the first upper cover material to form a cylindrical shape together with the first upper cover material, and has an internal cavity that opens to face the opening of the cavity of the first upper cover material; a pair of clamper receivers attached to the first upper cover material in the cavity of the first upper cover material and disposed on both sides of the support column body; a clamper attached to the second upper cover material in the cavity of the second upper cover material, inserted from the cavity of the second upper cover material into the cavity of the first upper cover material, and clamping the pair of clamper receivers from both sides of the support body; A pillar equipped with:

2. The hook wraps around the back of the first flange under the hooked portion, and the first flange is sandwiched between the hook and the second flange. The pillar of claim 1 .

3. A support body, a first cover material fixed to the support body around the support body, having a semi-cylindrical shape around the central axis of the support body and an open cavity therein; a second cover material that is formed around the support body in a semi-cylindrical shape around the central axis of the support body, and that is combined with the first cover material to form a cylindrical shape together with the first cover material, and that has an internal cavity that opens to face the opening of the cavity of the first cover material; a first flange protruding inward from an edge of the opening of the cavity of the first cover material; a second flange that protrudes inward from an edge of the opening of the cavity of the second cover material and abuts against the first flange; a hook joint having a hook protruding obliquely upward from the first flange toward the second flange and a hooked portion formed in the second flange in the shape of a hole or a notch, the hook being passed through the hooked portion and hooked onto an upper edge of the hooked portion, thereby joining the first flange and the second flange; A cover member is fixed to the support body on the first cover member and around the support body. a first upper cover material formed in a semi-cylindrical shape around the central axis of the support body and having an open cavity therein; a second upper cover material that is on top of the second cover material and around the support body, has a semi-cylindrical shape around the central axis of the support body, and is combined with the first upper cover material to form a cylindrical shape together with the first upper cover material, and has an internal cavity that opens to face the opening of the cavity of the first upper cover material; a pair of clamper receivers attached to the first upper cover material in the cavity of the first upper cover material and disposed on both sides of the support column body; a clamper attached to the second upper cover material in the cavity of the second upper cover material, inserted from the cavity of the second upper cover material into the cavity of the first upper cover material, and clamping the pair of clamper receivers from both sides of the support body; A pillar equipped with:

4. The hook wraps around the back of the second flange above the hooked portion, and the second flange is sandwiched between the hook and the first flange. The pillar according to claim 3.

5. a pad projecting from an edge of the first flange toward the cavity of the second cover material; Further provided with A pillar as described in any one of claims 1 to 4, wherein the contact piece is directly or indirectly contacted with the outer periphery of the pillar body, a screw is driven into the contact piece and the pillar body, and the head of the screw is fitted within the cavity of the second cover material.

6. a stopper that projects from the first flange toward the second flange and receives the second flange from below; The pillar according to claim 1 , further comprising:

7. The clamper passes from the cavity of the second upper cover material to the side of the pair of clamper receivers, wraps around to the back of the pair of clamper receivers, and is caught on the back of the pair of clamper receivers. A pillar according to any one of claims 1 to 4.

8. a first cover material formed in a semi-cylindrical shape around the axis and having an open cavity therein; a second cover material formed in a semi-cylindrical shape around the axis, and combined with the first cover material to form a cylindrical shape together with the first cover material, the second cover material having an internal cavity that opens to face the opening of the cavity of the first cover material; a first flange protruding inward from an edge of the opening of the cavity of the first cover material; a second flange that protrudes inward from an edge of the opening of the cavity of the second cover material and abuts against the first flange; a hook joint having a hook that protrudes obliquely downward in the axial direction from the second flange toward the first flange and a hooked portion that is formed in the first flange in the shape of a hole or a notch, the hook being passed through the hooked portion and hooked onto an edge of the hooked portion, thereby joining the first flange and the second flange; a first upper cover material disposed on the first cover material, forming a semi-cylindrical shape around the axis and having an open cavity therein; a second upper cover material disposed on the second cover material, forming a semi-cylindrical shape around the axis, and combined with the first upper cover material to form a cylindrical shape together with the first upper cover material, the second upper cover material having an internal cavity that opens to face the opening of the cavity of the first upper cover material; a pair of clamper receivers attached to the first upper cover material in the cavity of the first upper cover material and disposed on both sides of the shaft; a clamper attached to the second upper cover material in the cavity of the second upper cover material, inserted from the cavity of the second upper cover material into the cavity of the first upper cover material, and clamping the pair of clamper receivers from both sides of the shaft; A cover provided.

9. The hook passes from the hooked portion to the rear of the first flange, and the first flange is sandwiched between the hook and the second flange. The cover according to claim 8.

10. A first cover material formed in a semi-cylindrical shape around an axis and having an open cavity inside; a second cover material formed in a semi-cylindrical shape around the axis, and combined with the first cover material to form a cylindrical shape together with the first cover material, the second cover material having an internal cavity that opens to face the opening of the cavity of the first cover material; a first flange protruding inward from an edge of the opening of the cavity of the first cover material; a second flange that protrudes inward from an edge of the opening of the cavity of the second cover material and abuts against the first flange; a hook joint having a hook that protrudes obliquely upward in the axial direction from the second flange toward the first flange and a hooked portion that is formed in the second flange in the shape of a hole or a notch, the hook being passed through the hooked portion and hooked onto an upper edge of the hooked portion, thereby joining the first flange and the second flange; a first upper cover material disposed on the first cover material, forming a semi-cylindrical shape around the axis and having an open cavity therein; a second upper cover material disposed on the second cover material, forming a semi-cylindrical shape around the axis, and combined with the first upper cover material to form a cylindrical shape together with the first upper cover material, the second upper cover material having an internal cavity that opens to face the opening of the cavity of the first upper cover material; a pair of clamper receivers attached to the first upper cover material in the cavity of the first upper cover material and disposed on both sides of the shaft; a clamper attached to the second upper cover material in the cavity of the second upper cover material, inserted from the cavity of the second upper cover material into the cavity of the first upper cover material, and clamping the pair of clamper receivers from both sides of the shaft; A cover provided.

11. The hook wraps around the back of the second flange above the hooked portion, and the second flange is sandwiched between the hook and the first flange. The cover of claim 10.

12. The clamper passes from the cavity of the second upper cover material to the side of the pair of clamper receivers, wraps around to the back of the pair of clamper receivers, and is caught on the back of the pair of clamper receivers. A cover according to any one of claims 8 to 11.

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