JP4227584B2 - Structural member formed by assembling a grooved metal member - Google Patents

Description

  The present invention relates to a structural member such as an architectural pillar, beam or wall, a partition (partition) component material or a metal frame member of interior furniture or furniture such as an office desk, and a metal frame constituting a housing of an OA device or the like. The present invention relates to a structural member in which a grooved metal member used as a member is assembled.

  Structural members with rectangular cross-sections for construction, frame members with rectangular cross-sections for furniture such as office desks, and frame members that make up housings for office automation equipment, etc. are required to be stable, not to mention strength and weight reduction. Therefore, it is necessary that the joining means such as the joining screw does not protrude from the surface of the member and that the design is excellent.

As what satisfies such a requirement, for example, a furniture leg suitable for a desk or the like by joining an upper stay and a lower stay respectively above and below a plate-like structural member as a frame member is known. (For example, refer to Patent Documents 1 and 2.)
In addition, there is also known a closed cross-section columnar member in which unevenness is formed by roll-forming a thin steel plate and unevenness is formed on four sides by electro-welding welding or caulking. (For example, see Patent Document 3)
Further, a closed cross-section columnar member having a similar cross-sectional shape is formed by extrusion molding of aluminum.
Japanese Patent Laid-Open No. 2001-186949, FIG. Japanese Patent Laid-Open No. 7-327748, FIG. Japanese Patent Laid-Open No. 2002-266467, FIG.

However, in the case of a conventional structural member having a closed cross section in advance, there is a problem that wiring to the inside of the structural member is difficult. Further, as shown in FIG. 13, in the hollow closed section columnar member 27, when the drill 28 is used for drilling, the side plate 29 in the closed section columnar member 27 has a sufficient reaction force against the tool such as the drill 28. Therefore, as shown in FIG. 13A to FIG. 13B, the side plate 29 is deformed or curved, resulting in a defect that burrs are formed. In addition, there is a problem that the drilling accuracy is also lowered.
Moreover, what was disclosed by Unexamined-Japanese-Patent No. 2002-266467 has the problem that a roll-molding requires an extremely large installation, and therefore the cost of a product rises.
Moreover, the thing by the extrusion molding of aluminum also has the problem that it is expensive in cost.

The present invention eliminates the above-mentioned problems of the prior art, facilitates wiring inside the structural member, enables high-precision drilling without causing burrs due to bending deformation during drilling, and is lightweight. An object is to provide a structural member having high strength and low manufacturing cost.

  In order to advantageously solve the above-mentioned problem, in the structural member assembled with the groove-shaped metal member of the first invention, the second groove-shaped metal member opposed to each other with a gap therebetween and the inside thereof so as to be sandwiched between them. In the structural member composed of the first groove metal to be arranged, three or more first groove metal members formed by cold working or hot working such as roll forming, press working, etc. are arranged at intervals, A second grooved metal member formed by cold working or hot working such as roll forming or pressing, and formed with a plurality of ribs protruding inward or outward on the web is outside the flange of the first grooved metal member. The flanges of the first groove-shaped metal members and the inner ribs or webs of the second groove-shaped metal members are joined to each other by joining means such as drill screws, bolts, rivets, welding, and adhesion. To do.

  Further, in the second invention, in the structural member in which the grooved metal member of the first invention is assembled and formed, the first grooved metal members are arranged in series at intervals, and the second grooved metal member is connected to the first grooved metal member. It arrange | positions in parallel so that 1 groove-shaped metal member may be pinched | interposed.

  Further, in the third invention, in the structural member formed by assembling the grooved metal member of the first invention, the inner first groove comprising a pair of first grooved metal members disposed so as to face each other so that the groove part faces inward. The shape-shaped metal member units are arranged at equiangular intervals, and the second groove-shaped metal members, which are refracted at the center in the width direction and formed into a dogleg shape as a whole, are arranged at equiangular intervals. And

  According to a fourth aspect of the present invention, in the structural member to which the grooved metal member of the third invention is assembled, three or more first grooved metal members disposed at equiangular intervals from the center, A columnar portion having a closed cross-sectional shape is formed by the three or more first groove-shaped metal members and the second groove-shaped metal member on the center portion side by the second groove-shaped metal member that connects the groove-shaped metal members. It is characterized by that.

  According to a fifth aspect of the present invention, in the structural member formed by assembling the grooved metal member of the third invention, the inner first grooved metal member unit is arranged in three or more directions at equal angular intervals such as 90 ° or 120 °. It is characterized by.

  According to a sixth aspect of the present invention, in the structural member in which the grooved metal member according to the first to fifth aspects of the invention is assembled, at least two or more columnar portions having an annular closed cross section are formed.

According to a seventh aspect of the present invention, in the structural member in which the grooved metal member of the first to fifth inventions is assembled, a lip is formed at the flange tip of the second grooved metal member.

According to the first aspect of the present invention, in a structural member composed of the second grooved metal member opposed at an interval and the first grooved metal disposed on the inside so as to be sandwiched between them, it is possible to perform cooling such as roll forming and pressing. Three or more first groove-shaped metal members formed by hot working or hot working are arranged at intervals, and formed by cold working or hot working such as roll forming, pressing, etc., inside or outside the web A second groove-shaped metal member having a plurality of ribs protruding in the direction is arranged opposite to the outside of the flange of the first groove-shaped metal member, and the flange of each first groove-shaped metal member and the second groove-shaped metal member With the structure of the structural member formed by joining the inner rib or web of the material with a joining means such as a drill screw, a bolt, a rivet, welding, adhesion, etc., it is possible to provide a structural member with low manufacturing cost and high strength.
Moreover, the joining of the first and second grooved metal members of the present invention is not exposed to the surface by the construction in which the joining is made by the joining means such as a drill screw, a bolt, a rivet, welding, and adhesion at the recessed portion. A structural member can be provided.
Further, a structural member having a combination of a first grooved metal member formed with ribs protruding outward in the web and a second grooved metal member formed with a plurality of outer ribs and inner ribs on the web, Since the concave flat surface for joining with another member is formed, the structural member in which the joint part with the other member is not exposed to the surface can be provided.
In addition, since the structural member of the present invention is constructed by joining and assembling the second grooved metal member on both sides of the first grooved metal member, the first grooved metal member or the second grooved metal is previously formed. After wiring equipment such as wiring or wiring support equipment or internal parts are provided on the inner surface side of the member, it is possible to assemble them, and the wiring parts or internal parts can be easily attached to the inside of the structural member.
Moreover, since the drilling operation can be performed on each of the first groove-shaped metal member and the second groove-shaped metal member in a single state before assembling the structural member, it is possible to perform the drilling operation on each of the flat-shaped groove-shaped metal members. Since each groove-shaped metal member can be drilled without being bent and deformed, a highly accurate hole can be formed without burrs.

  According to the second invention, the first groove-shaped metal members are arranged in series at intervals, and the second groove-shaped metal members are arranged in parallel so as to sandwich the first groove-shaped metal members. By combining the number of 1-groove metal members and the width of the second groove-shaped metal members as appropriate, an inexpensive columnar or wall-shaped structural member that is lightweight and has high rigidity can be easily manufactured. it can.

  According to the third invention, the inner first groove-shaped metal member unit composed of a pair of first groove-shaped metal members arranged to face each other so that the groove portions face inward is disposed at equiangular intervals, and the widthwise center portion Since the second groove-shaped metal member that is refracted as a whole and is formed in a U-shape is disposed at equiangular intervals, it is easy to construct a lightweight, rigid and inexpensive radially extending structural member can do.

According to the fourth invention, since the columnar portion having the closed cross-sectional shape is formed by the three or more first groove-shaped metal members and the second groove-shaped metal member on the center side, the rigidity of the center portion is increased. It can be a structural member.
According to the fifth invention, the second groove-shaped metal in which the inner first groove-shaped metal member unit is simply arranged in three or more directions at equiangular intervals, and the widthwise central portion is appropriately refracted accordingly. By combining the members, it is possible to easily configure various structural members that are lightweight, rigid, inexpensive, and radially extend, combining the inner first groove-shaped metal member unit and the second groove-shaped metal member.

According to the sixth aspect of the present invention, since two or more columnar sections having an annular closed cross section are formed in the structural material, it is possible to obtain a structural member having significantly higher rigidity than the case of only one columnar section.
According to the seventh aspect of the present invention, a structure member with higher rigidity can be provided by the configuration in which the lip is formed on the second grooved metal member.

Example 1
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a structural member formed by assembling a grooved metal member according to a first embodiment of the present invention. The structural member 1 is formed by a first groove-shaped metal member 2 formed by cold working or hot working such as roll forming or pressing, and by cold working or hot working such as roll forming or pressing. Two types of groove-shaped metal members of the second groove-shaped metal member 3 are assembled and formed. The first and second groove-shaped metal members are formed by roll forming or pressing a metal member such as steel, an alloy of iron and another metal, aluminum, or an aluminum alloy. If necessary, the first groove-shaped metal member 2 and the second groove-shaped metal member 3 may be formed of a non-metallic material such as plastic, fiber-reinforced plastic, or resin.

  The first grooved metal member 2 has a web 4, a flange 5, and an outer rib 6 that is formed on the web 4 and protrudes in the outer direction. As the first grooved metal member 2, the outer rib 6 may be omitted.

  The second groove-shaped metal member 3 has a wide web 7, flanges 8 at both ends, and a number of inner ribs 9 projecting inwardly formed on the wide web 7, and a lip 10 at the tip of the flange 8. The second metal channel-shaped member 3 refracted as a whole through the bent portion 11 is formed by bending the intermediate portion between the inner side ribs 9 on the center side of the wide web 7 outward. It is configured.

  The webs 4 in the pair of first metal channel members 2 are arranged in parallel so as to be parallel to each other, and the outer ribs 6 (or the webs 4 in the case where there are no outer ribs 6) are outside each other. Three inner first metal channel-shaped member assembly units 12 configured to face each other so as to face each other are arranged in three sets at equal angular intervals of 120 °, and each of the two inner firsts facing each other at equal angular intervals. The second groove-shaped metal member 3 is disposed over the four outer flanges 5 in the circumferential direction of the metal groove-shaped member set unit 12, and the inner rib 9 is disposed so as to contact the flanges. 5 and the respective inner ribs 9 are integrated by a joining means such as a drill screw 16, a bolt, a rivet, welding, an adhesive, and the like, and the structural member 1 having high rigidity is configured.

  In the structural member 1 according to the first embodiment, the three first grooved metal members 2 arranged on the central side, the bent portions 11 of the second grooved metal members 3 and the inner ribs 9 on both sides thereof, On the central side, a generally closed triangular tube portion 13 that is refracted and closed is formed as a whole, and is connected to the inner tube portion 13 with an equiangular interval at the peripheral portion, and the inner inner Three refracted closed annular outer cylindrical portions 14 formed by the second groove-shaped metal member 3 opposed to the one-groove metal member assembly unit 12 are formed to form a stable structural member 1 having high rigidity. .

  About the length of the longitudinal direction of the said 1st grooved metal member 2 and the 2nd grooved metal member 3, these may be made into the same length, and others are between the edge parts of a pair of 2nd grooved metal member 3. When the member is arranged so as to be integrally joined by joining means such as a drill screw, bolt, rivet, welding, adhesive, etc., the first groove-shaped metal member is longer than the length of the second groove-shaped metal member 3. The length of 2 may be shortened.

(Second Embodiment)
FIG. 2 shows a second embodiment of the structural member 1 of the present invention, in which four sets of inner first metal groove-shaped member set units 12 are arranged at an equal angular interval of 90 degrees, and the second metal groove-shaped The members 3 are arranged at equal angular intervals of 90 degrees, and are integrally joined by a joining means such as a drill screw 16, a bolt, a rivet, welding, an adhesive, and the like.

  In the structural member 1 of the second embodiment, the four first grooved metal members 2 arranged on the center side, the bent portions 11 of the second grooved metal members 3 and the inner ribs 9 on both sides thereof, A generally closed rectangular tube portion 13 that is refracted and closed is formed on the central portion side as a whole, and is connected to the tube portion 13 with an equiangular interval between its peripheral portions and the first inner side. Four refracted closed annular outer cylindrical portions 14 formed by the second groove-shaped metal member 3 facing the groove-shaped metal member assembly unit 12 are formed, and a stable structure having higher rigidity than the case of the first embodiment. The member 1 is used. Since other configurations are the same as those of the above-described embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

(Third embodiment)
FIG. 3 shows a third embodiment of the structural member 1 of the present invention, and the first groove shape in the inner first groove-shaped metal member assembly unit 12 constituted by a pair of first groove-shaped metal members 2. In parallel with the metal member 2, another first groove-shaped metal member 2 is disposed at an interval, and the second groove-shaped metal member 3 is disposed across the flanges 5 of the three first groove-shaped metal members 2. The flange 5 of the first grooved metal member 2 and the inner rib 9 of the second grooved metal member 3 are joined so as to be integrated by a joining means such as a drill screw 16, a bolt, a rivet, welding, an adhesive or the like. Yes.

  In the structural member 1 of the third embodiment, the three first grooved metal members 2 arranged in series on the central side and the second grooved metal members 3 arranged on both sides thereof as a whole It is a stable structural member 1 having a large rigidity and having two refracted closed annular cylindrical portions 13 formed with high rigidity. Since other configurations are the same as those of the above-described embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

(Fourth embodiment)
FIG. 4 shows a fourth embodiment of the structural member 1 of the present invention, and the webs 4 in the pair of first metal channel members 2 are arranged in parallel so as to be parallel to each other. In addition, two sets of inner first groove-shaped metal member assembly units 12 configured so as to face each other so that the outer ribs 6 face each other are arranged at an equal angular interval of 90 °. The intermediate outer web 7 is made long and bent 90 ° over the four flanges 5 on the outer circumferential side of the two inner first grooved metal member set units 12 facing each other. Are disposed so that the inner ribs 9 are in contact with each other, and the flanges 5 and the inner ribs 9 are formed by drill screws 16, bolts, rivets, welding, adhesives, and the like. Integrated by In addition, the second grooved metal member 3 shown in FIG. 2 is disposed over the four flanges 5 on the outer circumferential side (inner corner side) of each inner first grooved metal member set unit 12, and the rigidity is increased. The structure part member 1 with high height is comprised.

  In the structural member 1 according to the fourth embodiment, the two adjacent first groove-shaped metal members 2 disposed on the corner portion side, the refractive outer corner portions 15 of the second groove-shaped metal members 3, and the inner ribs on both sides thereof. 9 is formed with a generally rectangular shape and a refracted closed annular cylindrical portion 13 on the corner portion side, and is connected to the cylindrical portion 13 and equiangular with the cylindrical portion 13. A bent rectangular closed annular tubular portion 13 formed by the second grooved metal member 3 facing the inner first grooved metal member assembly unit 12 at an interval and an outer tubular shape in two directions perpendicular to this. Two braces 14 are formed, and the rigid and stable structural member 1 suitable for the corner portion is obtained. In such a structural member 1, the structural member 1 having high rigidity can be used as the structural member for the corner.

(Fifth embodiment)
FIG. 5 shows a fifth embodiment of the structural member 1 of the present invention. Briefly described, FIG. 5 is a modification of the embodiment shown in FIG. Instead of the two-groove metal member 3, two second groove-shaped metal members 3 having a short linear width direction dimension without the bent outer corner 15 are used, and a drill screw 16, a bolt, a rivet, a weld, It is the form joined so that it may integrate by joining means, such as an adhesive agent, and the recessed part 17 is formed in the corner part.

  In such a form, one second groove-shaped metal member 2 disposed on the inner corner side, a pair of inner first groove-shaped metal member assembly units 12, and two second grooves disposed on the outer side. Since the cylindrical portion 14 having two closed annular cross sections is formed by the shape metal member 3, the structural member 1 having high rigidity in the front-rear direction and the left-right direction can be obtained. For example, it can be used as a structural member disposed close to a portion having a protruding corner. Since other configurations are the same as those of the above-described embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  As described above, the structural member 1 of each of the above embodiments is a structural member such as a building pillar, beam or wall, a partition (partition) component material, or a metal frame member of interior furniture or furniture such as an office desk, It can be used as a metal frame member (structural member) constituting a housing of an OA device or the like.

  For example, the structural member 1 of each of the above embodiments can also be used as a vertical frame member at a corner portion or an intermediate portion constituting a wall material panel in a building such as a steel house. In such a case, a side end portion of a structural face material such as a thin steel plate may be joined to the second grooved metal member 3. Further, the length of the first grooved metal member 2 is shortened so as to be separated from the upper and lower ends of the second grooved metal member 3, and the second grooved metal facing each other at the upper and lower ends of the second grooved metal member 3. An end portion of a horizontal frame member having a width similar to that of the first groove-shaped metal member 2 is inserted and disposed between the members 3, and the horizontal frame member and the second groove-shaped metal member 3 are joined. That's fine.

  Moreover, the structural member of each said embodiment can also be utilized as a vertical frame material (columnar structural member) which comprises the partition in a room | chamber interior. Also in this case, the first groove-shaped metal member 2 is formed to be short so as to be separated from both ends of the second groove-shaped metal member 3 in the same manner as described above, and the horizontal frame is provided between the second groove-shaped metal members 3 facing each other at the upper end portion. What is necessary is just to arrange | position material and to join to the 2nd groove-shaped metal member 3.

When practicing the present invention, the first groove-shaped metal member assembly unit 12 is, for example, 72 degrees, 60 degrees as a modification of the structural member extending in three or four directions as in the first and second embodiments. There may be a modified form in which five or six pieces are arranged in the circumferential direction at equal angular intervals such as ° and extended in five or six directions. Further, as a modification of the third embodiment, the first groove-shaped metal member 2 is arranged in the circumferential direction at an angular interval, and the middle portion of the second groove-shaped metal member 3 is refracted to form a dogleg shape. It is good also as a structural member of the structure which is combined with the 2nd groove-shaped metal member 3 made to make it, or to make it arcuate by bending.

  In addition, when the structural member 1 of the present invention is used for various applications, the structural members 1 adjacent to each other in series as shown in FIG. The flanges 8 of the adjacent structural members 1 can be brought into contact with each other and connected by the long metal fittings 23 having a locking groove for press-fitting the flange 8 and the lip 10 at the ends. it can. In addition, as shown in FIG. 7, the decorative plate 24 may be disposed in contact with the outside of the adjacent second grooved metal member 3 and attached by a fixing means such as a drill screw 16.

Next, as an example, an embodiment applied to interior furniture will be described.
8 and 9 show an example of use of the structural member of the first embodiment, wherein the length of the first grooved metal member 2 is made shorter than the length of the second grooved metal member 3, The base end portion of the arm 18 projecting in the lateral direction is joined to the lower end portion between the lower end portion in the vertical direction and the second groove-shaped metal member 3 facing each other at the upper end portion by the joining means, and is seated on the lower portion of the arm 18. A plate 19 is fixed, and a base end portion of a support arm 20 projecting in the lateral direction is joined to an upper end portion by a joining means, and an upper horizontal plate 21 is joined to the support arm 20 so as to be indoor interior. A furniture table 22 is formed. As said joining means, joining means, such as a drill screw, a volt | bolt, a rivet, welding, and an adhesive agent, are employable.

Moreover, the case where it uses for the structural material of the both sides of a desk as one form in the case of using the structural member 1 of the deformation | transformation form of 3rd Embodiment shown in FIG. 3 for a furniture leg by FIG. 10 and FIG. If it demonstrates, in this form, the 1st grooved metal member 1 of a short member will be used in which the upper and lower ends of the first grooved metal member 2 in the structural member 1 are separated from the end of the second grooved metal member 3. An upper stay 25 and a lower stay 26 made of a square steel pipe or the like are fitted and disposed in the concave groove between the upper and lower second grooved metal members 3, and the inner rib 9 in the second grooved metal member 3 and The upper stay 25 is joined by a drill screw 16 or the like, and similarly, on the lower side, the inner rib 9 and the lower stay 26 are joined by the drill screw 16 or the like. Further, leg seats 30 that can be appropriately adjusted in height are provided at the lower ends of both ends in the longitudinal direction of the lower stay 26, and desk legs 31 configured in this manner are arranged in parallel at intervals, and these legs A top plate (desk plate) 32 is placed over the top of the desk leg 31 as shown by a two-dot chain line, and is detachably installed by appropriate attachment means to constitute a furniture leg. .
In addition, in the 2nd groove-shaped metal member 3 of this embodiment, the groove-shaped metal member by which the space | interval between the inner side ribs 9 formed in the web 7 was enlarged is shown.

  Next, the advantages of the structural member 1 of the present invention over the conventional closed-section columnar member 27 shown in FIG. 13 will be described with reference to FIG. Since it is constructed by assembling the first grooved metal member 2 and the second grooved metal member 3, the outer surface of the inner rib 9 of this member is placed flat so that the lower surface is the lower surface, especially when the grooved metal member 3 is used. In addition, the inner rib 9 (or the web 7 when the web 7 side is the lower surface) is easily and accurately drilled by the drill 28 without causing the web 7 to bend or causing burrs. be able to. In order to prevent the web 7 from being bent as much as possible, the width dimension of the flange 8 from the outer surface of the web 7 and the projecting dimension of the inner rib 9 should be made the same as much as possible. And as shown in FIG.12 (b), the hole provided in the flange 5 of the 1st grooved metal member 2 and the hole previously provided in the inner rib 9 of the 2nd grooved metal member 3 as shown in FIG.12 (b). Since the drill screw 16 can be screwed into and joined to each other, the structural member 1 with high accuracy can be manufactured.

  In each of the above-described embodiments, the form in which the inner rib 9 is provided on the second grooved metal member 3 is shown, but the second grooved metal member 3 in the form in which the outer rib is provided may be used. When the second grooved metal member 3 having the outer rib in the opposite direction to the flange 5 of the first grooved metal member 2 is joined, the web 7 of the second grooved metal member 3 and the second grooved metal member 3 The flange 5 of the first grooved metal member 2 may be joined to the flange 7 of the second grooved metal member 3 by joining the flange 5 of the first grooved metal member 2 with a joining means such as a drill screw. When it is necessary to shift the first grooved metal member 2 to the inside in order to join, the protruding height of the outer rib 6 of the first grooved metal member 2 is increased to increase the first grooved metal member. The outer surface of the second outer rib 6 and the outer surface of the flange 8 of the second grooved metal member 3 may be the same surface.

It is sectional drawing which shows one Embodiment of this invention. It is sectional drawing which shows one Embodiment of this invention. It is sectional drawing which shows one Embodiment of this invention. It is sectional drawing which shows one Embodiment of this invention. It is sectional drawing which shows one Embodiment of this invention. It is sectional drawing which shows the form in the case of connecting structural members mutually. It is sectional drawing which shows the form which connected structural members mutually and provided the surface decorative board. It is a front view which shows one usage example of the form shown in FIG. It is a top view of FIG. It is a front view which shows one usage example of embodiment shown in FIG. It is a perspective view which shows the form decomposed | disassembled into the structural member of this invention shown in FIG. 10, and the upper stay and lower stay joined to this. It is explanatory drawing in the case of providing a hole in the groove-shaped metal member of this invention, and joining and comprising a structural member. It is explanatory drawing in the case of providing a hole in the conventional hollow closed cross-section columnar member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Structural member 2 1st grooved metal member 3 2nd grooved metal member 4 Web 5 flange 6 Outer rib 7 Web 8 Flange 9 Inner rib 10 Lip 11 Bending part 12 Inner 1st grooved metal member assembly unit 13 Cylindrical part DESCRIPTION OF SYMBOLS 14 Outer cylindrical part 15 Refraction outer corner part 16 Drill screw 17 Recessed part 18 Arm 19 Seat board 20 Supporting arm 21 Upper horizontal board 22 Table 23 Connecting metal fittings 24 Decorative plate 25 Upper stay 26 Lower stay 27 Closed cross-section columnar member 28 Drill 29 side Face plate 30 Leg seat 31 Desk leg 32 Top plate

Claims (7)

  Cold or hot working such as roll forming, press working, etc., in a structural member composed of a second grooved metal member opposed to each other and a first grooved metal arranged inside so as to be sandwiched between them Three or more first groove-shaped metal members formed by the above are arranged at intervals, and ribs that are formed by cold working or hot working such as roll forming or pressing and projecting inward or outward on the web are formed. A plurality of formed second grooved metal members are arranged opposite to each other over the flanges of the first grooved metal members, and the flanges of the respective first grooved metal members and the inner ribs or webs of the second grooved metal members, A structural member formed by assembling and forming a groove-shaped metal member, characterized in that the metal member is joined by joining means such as a drill screw, a bolt, a rivet, welding, and adhesion.   The first groove-shaped metal members are arranged in series at intervals, and the second groove-shaped metal members are arranged in parallel so as to sandwich the first groove-shaped metal members. A structural member formed by assembling the groove-shaped metal member described above.   Inner first groove-shaped metal member units composed of a pair of first groove-shaped metal members arranged so as to face each other inward are disposed at equiangular intervals, and the central portion in the width direction is refracted as a whole. The structural member formed by assembling the groove-shaped metal member according to claim 1, wherein the second groove-shaped metal members having a U-shape are arranged at equal angular intervals.   The three or more first groove-shaped metal members disposed at equiangular intervals from the center, and the second groove-shaped metal member connecting the first groove-shaped metal members, the three or more first groove-shaped metal members are connected to the center portion side. The structural member formed by assembling and forming the groove-shaped metal member according to claim 3, wherein the first groove-shaped metal member and the second groove-shaped metal member form a columnar portion having a closed cross-sectional shape.   4. The grooved metal member according to claim 3, wherein the inner first grooved metal member units are arranged in three or more directions at equal angular intervals such as 90 ° or 120 °. Structural member.   The structural member formed by assembling the grooved metal member according to any one of claims 1 to 5, wherein at least two or more columnar portions having an annular closed cross section are formed.   The structural member formed by assembling the grooved metal member according to any one of claims 1 to 6, wherein a lip is formed at a flange tip of the second grooved metal member.

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