Interior column structure and construction method for interior column structure

Abstract

To provide an interior column structural body capable of being easily formed between a ceiling and a floor and having earth quake resistance, and a construction method of the interior structural body .SOLUTION: An interior column structural body 100 includes: a column hollow member 110 having a longitudinal direction; flange members 410, 420 attached to the inside of the column hollow member 110 and having cylindrical parts 510, 520; and engaging members 310, 320 fixable on a ceiling 910 or a floor 920 to be engaged on the cylindrical parts 510, 520, wherein engaging structures of the engaging members 310, 320 and the cylindrical parts 510, 520 are to be engaged with fastening of a screw B10 and long holes 310H, 320H along a longitudinal direction.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention relates to an interior column structure that connects a ceiling and a floor in an indoor space and a construction method of the interior column structure. 【Background Art】 【0002】 For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-183273) discloses a partition panel that can easily and inexpensively attach and remove room partitions. 【0003】 The partition panel described in Document 1 includes a plurality of partition columns and a plurality of decorative panels attached to the front and back surfaces of the partition columns, and is a partition panel fixed to the ceiling and floor of a room. The decorative panel is detachable, and a T-shaped rail or an L-shaped rail for attaching the partition column is provided on the ceiling and floor. A groove provided above and below the partition column is inserted into the convex portion of the T-shaped rail or the L-shaped rail, and the T-shaped rail or the L-shaped rail and the partition column are fixed by a guide pin or a bolt. 【0004】 Patent Document 2 (Japanese Patent No. 5655184) discloses a screen-type furniture, a seismic bracing mechanism-equipped support column (hereinafter referred to as a seismic bracing support column), and a seismic bracing mechanism-equipped furniture (hereinafter referred to as a seismic bracing furniture), which are composed of three basic items. By combining or reorganizing the three basic items in various ways, partitions are formed. When a change of residence or a change of partition becomes necessary, the diversion, addition, and partial replacement of the partition can be easily achieved, and it has adaptability versatility for various living rooms and can be used continuously for a long time. A seismic bracing mechanism-equipped support column and furniture connection type, screen-type portable partition (hereinafter referred to as a portable partition) is disclosed. 【0005】 The folding screen-type portable partition described in Patent Document 2 comprises a plurality of parallel panels and a detachable paper hinge device connecting adjacent panels. The detachable paper hinge device comprises a pair of grooved members and a modern paper hinge, which has the same configuration as the wings of traditional paper hinges used in folding screens, but is made of a material that is stronger and more flexible than Japanese paper. The grooves of each grooved member have a web that fits into the vertical ends of each panel for detachable connection, and a pair of flanges provided on both sides of the web. The modern paper hinges are alternately bonded to the pair of grooved members, and the pair of grooved members are connected so that one panel can rotate 360 ​​degrees relative to the other panel between adjacent panels. A folding screen-type joinery is constructed by connecting multiple panels in a series using a detachable paper hinge device. The support column equipped with the seismic isolation bracing mechanism is fitted with a seismic isolation bracing mechanism, which comprises a hollow outer cylinder, a hollow inner cylinder that can slide vertically, a ball bearing, and a holder that holds the ball material of the ball bearing. This mechanism allows for bracing between the ceiling and floor, thus enabling fixation to the room. The support column equipped with the seismic isolation bracing mechanism and the panels located at one or both ends of the multiple panels constituting the folding screen-type joinery are connected by a detachable paper hinge device. 【0006】 Patent Document 3 (Japanese Patent Publication No. 2013-199768) discloses an inner glass skin structure for a double glass skin that is made of frameless plate glass with excellent design, has a structure that can compensate for its lack of rigidity, has sufficient seismic resistance, and is easy to maintain once installed. 【0007】 The inner glass structure for double glass skin described in Patent Document 3 is an inner glass skin structure for double glass skin that is arranged inside a glass curtain wall as outer glass at a certain interval, and comprises a plurality of inner glass plates arranged inside the outer glass at a certain interval to face the outer glass, each of which is not supported on all four sides by a rigid frame, a roller placed at the bottom of each of the plurality of glass plates, a lower rail member placed on the floor surface directly below the plurality of glass plates and an upper rail member placed on the ceiling surface directly above the plurality of glass plates that is paired with the lower rail member, the lower rail member that supports the bottom of the inner glass plates movably via the roller and the upper rail member that supports the top of the glass plates movably, and a fixing means configured in a support means located between the outer glass and the inner glass that fixes and holds each side of each adjacent pair of glass plates in the middle in the height direction, the fixing means that allows a hand to be inserted through the gap between the adjacent pairs of glass plates from the interior side and release the fixing and holding to each side of each adjacent pair of glass plates. 【0008】 Patent document 4 (Japanese Utility Model Publication No. 60-120111) discloses a panel fixing device. 【0009】 The panel fixing device described in Patent Document 4 is characterized by comprising a panel member fixed between opposing first and second fixing members, and fixing means for elastically fixing and holding the panel member. 【0010】 Patent document 5 (Japanese Utility Model Publication No. 61-51051) discloses a panel for creating a beauty salon space. 【0011】 The panel for forming a beauty salon space described in Patent Document 5 is characterized in that a continuous beauty salon is formed by multiple columnar frames made of multiple pipes connected in a polygonal shape, multiple hinges that can rotate around round bars that simply protrude from the top and bottom of the pipes as pivots, adjusters that can extend and retract with their axis aligned with the lower round bar, small panels fixed to the hinges that cover the columnar frames in an openable and closable manner, and large panels that are further fixed to other hinges that connect each columnar frame. 【0012】 Patent document 6 (Japanese Patent Publication No. 5781379) discloses a column structure for a temporary column that is temporarily fixed and erected between the floor and ceiling surfaces inside a building. 【0013】 In the column structure described in Patent Document 6, the column structure is such that a column is erected across the floor and ceiling surfaces near an indoor wall surface. The column is inserted into recesses in an upper support having an upper end recess for accommodating the upper end of the column and a compression spring disposed at the bottom of the upper end recess, and into a lower support having a lower end recess for accommodating the lower end of the column. The column is arranged in an inclined state such that the side surface of the upper support is in contact with the wall surface on the ceiling side, and the lower support is separated from the wall surface on the floor side. 【0014】 Patent document 7 (Japanese Unexamined Patent Publication No. 8-284289) discloses a partition wall that forms a seismic isolation structure. 【0015】 The partition wall described in Patent Document 7 is a partition wall that divides the space between the ceiling and the floor by interposing panels between support columns erected on the floor at predetermined intervals, and comprises a tilting support mechanism that tiltably supports the lower end of the support column, and a free-moving connection mechanism that connects the upper end of the support column to a ceiling rail attached to the ceiling so that it can slide, tilt and move up and down. 【0016】 Patent document 8 (Japanese Unexamined Patent Publication No. 2-279854) discloses a suspended ceiling structure and its support column device. 【0017】 In the suspended ceiling structure described in Patent Document 8, the suspended ceiling structure encloses a plurality of lattice members suspended from the lower part of the superstructure of a building and at least one extendable support device extending between the superstructure and the lattice members, wherein the support device comprises an outer support member and an inner support member that are inserted into each other so as to be able to move in and out in the axial direction, and a fixing device fixed to the first end of the inner support member, the first end of the inner support member being positioned within the outer support member, and the fixing device being provided to engage with the inner surface of the outer support member to enable axial extension while suppressing contraction, the fixing device being made of an elastic disc-shaped spring clip, the edge of which can be engaged with the inner surface of the outer support member. [Prior art documents] [Patent Documents] 【0018】 [Patent Document 1] Japanese Patent Publication No. 2006-183273 [Patent Document 2] Patent No. 5655184 [Patent Document 3] Japanese Patent Publication No. 2013-199768 [Patent Document 4] Japanese Utility Model Publication No. 60-120111 [Patent Document 5] Japanese Utility Model Publication No. 61-51051 [Patent Document 6] Patent No. 5781379 [Patent Document 7] Japanese Patent Application Publication No. 8-284289 [Patent Document 8] Japanese Patent Application Publication No. 2-279854 [Overview of the Initiative] [Problems that the invention aims to solve] 【0019】 As shown in Patent Documents 1 to 8, a structure is disclosed in which a column is formed between the ceiling or floor. However, in recent years, the usage situation in offices and the like has changed, and there is a demand for spaces where meetings and the like can be held casually in addition to formal meeting rooms. Furthermore, while it was previously normal for members to conduct business at designated desks or chairs, the demand for a free-address system is also increasing. 【0020】 Under such circumstances, there is an increasing need to firmly and easily fix an interior column structure between the ceiling and the floor. In particular, it is required that the interior column structure does not easily come off and can also cope with disasters such as earthquakes. 【0021】 An object of the present invention is to provide an interior column structure and a construction method thereof that can be easily formed between a ceiling and a floor and also have earthquake resistance. 【Means for Solving the Problems】 【0022】 (1) An interior column structure according to one aspect includes a column hollow member having a longitudinal direction, a flange member attached inside the column hollow member and having a cylindrical portion, and an engaging member that can be fixed to a ceiling or a floor and engages with the cylindrical portion. The engaging structure of the engaging member and the cylindrical portion is engaged by screw fastening and a long hole along the longitudinal direction. 【0023】 In this case, by fixing the engaging member to the ceiling or the floor and engaging the column hollow member to which the flange member is attached with the engaging member, the interior column structure can be easily formed. In particular, an interior column structure can be additionally formed for an already completed interior. Also, by fixing the engaging members to both the ceiling and the floor respectively, engaging one end of the interior column structure with the engaging member on the floor side, and engaging the other end of the interior column structure with the engaging member on the ceiling side, the interior column structure can be easily installed between the ceiling and the floor. Furthermore, the engagement structure between the engaging member and the cylindrical portion is engaged by elongated holes and screw fastening along the longitudinal direction. This allows the interior column structure to absorb fluctuations even when the distance between the ceiling and floor changes. Specifically, it prevents the interior column structure from damaging the ceiling or floor during disasters such as earthquakes. Note that screw fastening includes fastening with bolts, nuts, screws, rivets, etc. 【0024】 (2) In the interior column structure according to the second invention, in an interior column structure relating to one aspect, the hollow column member may have a table support fixing portion on which a table can be placed. 【0025】 In this case, since the hollow column members of the interior column structure have table support fixing parts, a table can be formed on the interior column structure. Furthermore, since the table legs can be omitted, the space at the base can be utilized to the fullest extent. In addition, the table top may be fixed to the table support fixing parts, or it may be fitted into the table support fixing parts. 【0026】 (3) In the interior column structure according to the third invention, or in the interior column structure according to the second invention, the hollow column member may be made of a cylindrical shape. 【0027】 In this case, since the hollow column member is made of a cylindrical shape, safety, design, and aesthetic appeal can be enhanced. 【0028】 (4) In the interior column structure according to the fourth invention, or in the interior column structure according to the second invention, the flange member may be fixed inside the hollow column member by welding, adhesive, or screw fastening. 【0029】 In this case, the hollow column member to which the flange member is attached can be used as a single integrated component, allowing for one-touch installation after the engagement member has been attached. 【0030】 (5) The interior column structure according to the fifth invention is, in one aspect or in the interior column structure according to the second invention, wherein the flange member has a hole for connecting wiring passed from the ceiling or floor to the inside of the hollow column member, and the hollow column member may have at least one or more of the following: an outlet connection part for which an outlet can be placed, a liquid crystal fixing part for which a liquid crystal screen can be placed, and a lighting fixing part for which a lighting fixture can be placed. 【0031】 In this case, electrical outlets, LCD screens, and lighting fixtures can be further installed in the hollow column members of the interior column structure. In particular, in the case of electrical wiring, power can be supplied, and in the case of network wiring, signals can be transmitted and received. 【0032】 (6) The interior column structure according to the sixth invention further includes a concealing cylindrical portion in one aspect or in the interior column structure according to the second invention, wherein the concealing cylindrical portion has a double-cylinder relationship with the column hollow member, houses a flange member and an engaging member inside, and may be formed to be able to move up and down. 【0033】 In this case, the concealing tube can conceal the engagement portion between the flange member and the engaging member. Furthermore, the double-tube relationship with the hollow column member enhances the design or aesthetic appeal. It is desirable that the diameter of the concealing tube be smaller than that of the hollow column member. In addition, while the concealing tube provided on the floor side moves downward due to its own weight, the concealing tube provided on the ceiling side may be made to move upward by providing an elastic body, such as a spring. As a result, the design or aesthetic appeal of the ceiling side can be enhanced. 【0034】 (7) The construction method for interior column structures relating to other aspects comprises a first step of attaching engaging members to the ceiling and floor, respectively, and a second step of screwing the cylindrical portion of a hollow column member, which includes a flange member having a longitudinal direction and a cylindrical portion inside, between the engaging members attached in the first step, using elongated holes formed in the longitudinal direction. 【0035】 In this case, since the hollow column member can be used as a single component, after attaching the engaging member, the hollow column member can be installed with a single touch to form an interior column structure. Furthermore, the engagement structure between the engaging member and the cylindrical portion is engaged by elongated holes and screw fastening along the longitudinal direction. This allows the interior column structure to absorb fluctuations even when the distance between the ceiling and floor changes. Specifically, it prevents the interior column structure from damaging the ceiling or floor during disasters such as earthquakes. [Brief explanation of the drawing] 【0036】 [Figure 1] This is a perspective view showing an example of an interior column structure according to this embodiment. [Figure 2] Figure 1 is a schematic cross-sectional view showing an example of the internal structure of an interior column structure. [Figure 3] This is a schematic perspective view showing an example of the engagement structure of the engaging member and the cylindrical portion. [Figure 4] This is a schematic cross-section diagram showing an example of the structure of a flange member. [Figure 5] This is a schematic perspective view showing an example of a lighting fixture, power strip, and table attached to an interior column structure 100. [Figure 6] This is a schematic perspective view showing an example of a liquid crystal display device attached to an interior column structure. [Modes for carrying out the invention] 【0037】 Embodiments of the present invention will be described below with reference to the drawings. In the following description, identical parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed descriptions of them will not be repeated. 【0038】 [This embodiment] Figure 1 is a perspective view showing an example of an interior column structure 100 according to this embodiment. 【0039】 As shown in Figure 1, the interior column structure 100 is installed between the ceiling 910 and the floor 920. Furthermore, as shown in Figure 1, the interior column structure 100 mainly consists of hollow column members 110. A concealing cylindrical section 210 is provided on the ceiling 910 side, and a concealing cylindrical section 220 is provided on the floor 920 side. 【0040】 The hollow column member 110 has a cylindrical shape, and the outer diameters of the concealing tube portion 210 and the concealing tube portion 220 are smaller than the inner diameter of the hollow column member 110. Therefore, one end of the hollow column member 110 and the concealing tube portion 210, and the other end of the hollow column member 110 and the concealing tube portion 220, are in a double-tube state in part. Specifically, the hollow column member 110 is mainly made of a metal material such as steel, and the concealed cylindrical portion 210 and the concealed cylindrical portion 220 are mainly made of aluminum. However, the hollow column member 110 and the concealed cylindrical portions 210 and 220 may be made of any other material. For example, the length of the hollow column member 110 may be approximately 2400 mm to 3000 mm, and its diameter may be approximately 30 mm to 130 mm. Also, the length of the concealed tube sections 210 and 220 may be in the range of 35 mm to 75 mm, and their diameter may be smaller than that of the hollow column member 110, in the range of approximately 5 mm to 9 mm. 【0041】 Next, Figure 2 is a schematic cross-sectional view showing an example of the internal structure of the interior column structure 100 in Figure 1, and Figure 3 is a schematic perspective view showing an example of the engagement structure of the engaging member 320 and the cylindrical portion 520. 【0042】 (Ceiling side 910 of interior column structure 100) As shown in Figure 2, in the interior column structure 100, the engaging member 310 is fixed to the ceiling 910 with fixing screws B11. Furthermore, the interior column structure 100 has a flange member 410, which is integrally formed with the cylindrical portion 510, fixed to the ceiling 910 side of the hollow column member 110 by welding WD. Details of the flange member 410 will be described later. On the ceiling 910 side, a spring 610 is provided around the cylindrical portion 510. One end of the spring 610 is supported by the flange member 410, and the other end of the spring 610 is positioned to contact the concealing cylindrical portion 210. As a result, the concealing cylindrical portion 210 is in contact with the ceiling 910. Furthermore, the cylindrical portion 510 is fixed by a screw B10 inserted into the elongated hole 310H of the engaging member 310. 【0043】 (Floor 920 side of interior column structure 100) Next, the floor 920 side has almost the same structure as the ceiling 910 side, the only difference being that the floor 920 side does not have a spring 610. As shown in Figures 2 and 3, in the interior column structure 100, the engaging member 320 is fixed to the floor 920 with fixing screws B11. Furthermore, in the interior column structure 100, a flange member 420, which is integrally formed with the cylindrical portion 520, is fixed to the floor 920 side of the hollow column member 110 by welding WD. Furthermore, the cylindrical portion 520 is fixed by a screw B10 inserted into the elongated hole 320H of the engaging member 320. In this embodiment, the engaging members 310 and 320 have a cross shape, which is done to accommodate the routing of the wiring CB described later. If the wiring CB is not required, they may be rectangular, polygonal, circular, elliptical, or any other shape. 【0044】 (Structure of flange members 410 and 420) Figure 4 is a schematic cross-section showing an example of the structure of flange members 410 and 420. In Figure 4, the area indicated by the dashed line represents the cross-section. 【0045】 As shown in Figure 4, the flange members 410 and 420 are not simply disc-shaped, but consist of flange members 410 and 420 having notches 411 and 412. In the portions of the flange members 410 and 420 where notches 411 and 412 are not formed, they are fixed to the inner wall of the hollow column member 110 by welding WD. In this embodiment, fixing is done by welding WD, but it is not limited to this, and any fixing method such as screw fixing, adhesive, or crimping can be used. 【0046】 Next, cylindrical portions 510 and 520 are fixed to the central parts of flange members 410 and 420. Note that the cylindrical portions 510 and 520 and flange members 410 and 420 may be made from a single integrated component, or they may be separate components fixed together as a single unit. 【0047】 Furthermore, the notches 411 and 412 in the flange members 410 and 420 are notch structures for passing the wiring CB from the ceiling 910 side or the floor 920 side into the hollow column member 110 of the interior column structure 100. In this embodiment, three notch structures are provided, but the embodiment is not limited to this, and one or any other number may be used. 【0048】 (Lighting device 810, power strip 820, and table 830 attached to the interior column structure 100) Figure 5 is a schematic perspective view showing an example of a lighting device 810, a power strip 820, and a table 830 attached to an interior column structure 100. 【0049】 As shown in Figure 5, a lighting device 810, a power strip 820, and a table 830 can be attached to the interior column structure 100. For example, a table 830 can be installed by screw-fixing a table support member 831 to a hollow column member 110 of an interior column structure 100. The height of the table 830 may be the same as the height of a typical desk or chair, or it may be positioned at a height that allows a beverage to be placed on it while standing next to a vending machine. In this case, since the hollow column member 110 does not rotate around its axis, the table 830 is securely fixed, providing the user with peace of mind. Furthermore, the table 830 in Figure 5 needs to be inserted through the hollow column member 110 before the hollow column member 110 is installed on the ceiling 910 and floor 920. However, as shown in the table 832 in Figure 5, a notch may be provided in the hollow column member 110 so that it can be attached later, and then screwed to the table support member 831. 【0050】 Furthermore, as shown in Figure 5, since wiring CB can be inserted from the floor 920 side, a power strip 820 may be provided. As a result, a personal computer or the like can be placed on the table 830 and work can be performed. Note that the power strip 820 may be equipped not only with electrical wiring CB but also with LAN connectors for network wiring, etc. 【0051】 Furthermore, as shown in Figure 5, the wiring CB may be routed from the ceiling 910 to supply power to the lighting device 810. As a result, it can be used as indirect lighting. 【0052】 (Liquid crystal display device 850 attached to interior column structure 100) Figure 6 is a schematic perspective view showing an example of a liquid crystal display device 850 attached to an interior column structure 100. 【0053】 As shown in Figure 6, a liquid crystal display device 850 can be attached to the interior column structure 100. As a result, it can be used as digital signage, and furthermore, it can be effectively used for web meetings, advertising, video conferencing, etc. 【0054】 (Regarding the seismic resistance of interior column structure 100) In the interior column structure 100 according to the present invention, even if the distance to the ceiling 910 and floor 920 fluctuates due to an earthquake or the like, the elongated holes 310H and 320H formed in the longitudinal direction of the interior column structure 100 can absorb such fluctuations through the structure of the elongated holes 310H and 320H, the screws B10, and the engaging members 310 and 320. 【0055】 In an experiment conducted with a heavy liquid crystal display device 850 mounted on the interior column structure 100 shown in Figure 6, and using the seismic intensity of the Great East Japan Earthquake, it was confirmed that the ceiling 910 and floor 920 remained undamaged, and the interior column structure 100 was safely supported. 【0056】 (Construction method for interior column structure 100) Next, we will explain the construction method for the interior column structure 100. First, if the flange members 410 and 420 have not been attached to the hollow column member 110 of the interior column structure 100, the flange members 410 and 420 are attached to the hollow column member 110 of the interior column structure 100 by welding (preparation step). 【0057】 Next, the engaging member 310 is attached to the vertical ceiling 910 on which the interior column structure 100 will be installed using fixing screws B11. Furthermore, the engaging member 320 is attached to the vertical floor 920 on which it will be installed using fixing screws B11 (first step). 【0058】 Next, the spring 610 is attached to the cylindrical portion 510 of the flange member 410 of the hollow column member 110, and the concealed cylindrical portion 210 is attached. Similarly, the concealed cylindrical portion 210 is attached to the cylindrical portion 520 of the hollow column member 110. 【0059】 Finally, the cylindrical portion 510 is fixed to the engaging member 310 through the elongated hole 310H with a screw B10. Similarly, the cylindrical portion 520 is fixed to the engaging member 320 through the elongated hole 320H with a screw B10 (second step). 【0060】 In the present invention, the interior column structure 100 corresponds to the "interior column structure," the hollow column member 110 corresponds to the "hollow column member," the cylindrical parts 510 and 520 correspond to the "cylindrical parts," the flange members 410 and 420 correspond to the "flange members," the ceiling 910 corresponds to the "ceiling," the floor 920 corresponds to the "floor," the engaging members 310 and 320 correspond to the "engaging members," the screw B10 corresponds to the "screw," the elongated holes 310H and 320H correspond to the "elongated holes," the tables 830 and 832 correspond to the "tables," the table support member 831 corresponds to the "table support fixing part," the wiring CB corresponds to the "wiring," the notches 411 and 412 correspond to the "communicating holes," and the concealed cylindrical parts 210 and 220 correspond to the "concealed cylindrical parts." 【0061】 While the above describes a preferred embodiment of the present invention, the invention is not limited thereto. It will be understood that various other embodiments can be made without departing from the spirit and scope of the invention. Furthermore, although the operation and effects of the configuration of the present invention are described in this embodiment, these operation and effects are examples and do not limit the invention. [Explanation of symbols] 【0062】 100 Interior Column Structure 110 Hollow column member 210, 220 Concealing tube section 310, 320 Engaging members 310H, 320H long hole 410, 420 Flange members 411, 412 Notches 510, 520 cylinder part Tables 830 and 832 831 Table support member 910 Ceiling 920 beds B10 Screw B11 Fixing screw CB wiring

Claims

[Claim 1] A column hollow member having a longitudinal direction, A flange member having a cylindrical portion is fixedly attached to the upper and lower parts inside the hollow column member, respectively. It includes ceiling-side and floor-side engaging members that can be fixed to the ceiling and floor, respectively, and that engage with the cylindrical portion, The engaging members on the ceiling side and the floor side and the engaging structure of the cylindrical portion are engaged by screw fastening and by elongated holes along the longitudinal direction, forming an interior column structure. [Claim 2] The interior column structure according to claim 1, wherein the hollow column member has a table support fixing portion on which a table can be placed. [Claim 3] The interior column structure according to claim 1 or 2, wherein the hollow column member is made of a cylindrical tube. [Claim 4] The interior column structure according to claim 1 or 2, wherein the flange member is fixed inside the hollow column member by welding, adhesive, or screw fastening. [Claim 5] The flange member has a hole that allows wiring passed from the ceiling or floor to communicate with the inside of the hollow column member. The interior column structure according to claim 1 or 2, wherein the hollow column member has at least one or more of the following: an outlet connection portion on which an outlet can be placed, an LCD fixing portion on which an LCD screen can be placed, and a lighting fixing portion on which a lighting fixture can be placed. [Claim 6] It further includes a blindfold tube section, The aforementioned concealing cylindrical portion has a double-cylinder relationship with the hollow column member, The interior column structure according to claim 1 or 2, wherein the flange member and the engaging member are housed inside and are formed to be able to move up and down. [Claim 7] The first step involves attaching engaging members to the ceiling and floor, respectively. A method for constructing an interior column structure, comprising: a second step of fastening the cylindrical portions of a hollow column member, which includes a flange member having a longitudinal direction and fixedly provided at the upper and lower parts of the interior, to the engaging members attached in the first step using elongated holes formed in the longitudinal direction.

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