JP7002715B1 - Metal frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal frame structure capable of easily improving expandability and assembling property. A metal frame structure 100 includes a metal tubular frame 10 and a metal fitting 41. The tubular frame 10 is configured by connecting a plurality of cylinders including the first cylinder 1 and the second cylinder 2 along the length, and the internal space Sp1 communicating along the length is formed. It is formed. The coupling metal fitting 41 connects the first tubular body 1 and the second tubular body 2. The surface 11 facing the second cylinder 2 in the first cylinder 1 includes a support surface 111 facing in one direction intersecting the lengths, and the support surface 111 has a second direction opposite to the one direction. The movement of the cylinder 2 of 2 is restricted. The joint fitting 41 is partially fixed to the second cylinder 2 in the second cylinder 2, and the portion of the second cylinder 2 protruding from the facing surface 21 with the first cylinder 1 is the second. By being fixed to the cylinder 1 of 1, the first cylinder 1 and the second cylinder 2 are connected in the internal space Sp1. [Selection diagram] FIG. 3A

Description

The present disclosure relates generally to metal frame structures, and more particularly to metal tubulars of various structures such as workbenches used in factories, tables used in restaurants, or shelves used in homes. The present invention relates to a metal frame structure composed of a frame.

As a related technique, a skeleton structure including a metal frame structure and a plurality of content structures detachably fixed to the metal frame structure is known (see, for example, Patent Document 1). In the related technology, as a content structure, an attachment including a lighting fixture, a design panel, a flat-screen television, and a hinged door are fixed to the metal frame structure.

In the frame structure according to the related technique, the metal frame structure has a rectangular outer shape, and is made by combining a plurality of cylinders (columns and beams) in a grid pattern. The metal frame structure has squares formed by a space partially or wholly surrounded by columns extending in the vertical direction and beams extending in the horizontal direction, and the content structure has squares in each square. It is fixed by being fitted. In the related technology, basically, by setting the positions of the plurality of cylinders (beams and columns) at predetermined positions, the width and height of the squares become constant according to the positions of the plurality of cylinders.

Further, in the related art, the size of the squares may be adjustable by making the positions of the plurality of cylinders adjustable. In this case, each of the plurality of cylinders has a plurality of screw holes arranged along the axial direction. A screw is inserted into the plurality of cylinders via an L-shaped connecting metal fitting, whereby the plurality of cylinders are connected.

Japanese Unexamined Patent Publication No. 2020-148085

In the above-mentioned related technique, if the positions of the plurality of cylinders are set to predetermined positions, the shape of the metal frame structure cannot be changed, and the expandability is lowered. Further, if the positions of the plurality of cylinders are adjustable, the plurality of cylinders are screwed to each other by using the L-shaped connecting metal fittings. Therefore, until the connecting metal fittings are screwed to the cylinders, a plurality of cylinders are screwed together. Since the cylinders are not temporarily assembled, the assembleability is low.

An object of the present disclosure is to provide a metal frame structure that is easy to improve expandability and assemblability.

The metal frame structure according to one aspect of the present disclosure includes a metal tubular frame and a metal fitting. The tubular frame is configured by connecting a plurality of cylinders including a first cylinder and a second cylinder along the length, and an internal space communicating along the length is formed. To. The joint fitting connects the first cylinder body and the second cylinder body. The surface of the first cylinder facing the second cylinder includes a support surface facing one direction intersecting the length, and the support surface facing the direction opposite to the one direction. Regulate the movement of the second cylinder. The joint fitting is partially fixed to the second cylinder in the second cylinder, and the portion of the second cylinder that protrudes from the surface facing the first cylinder is the first. By being fixed to the cylinder body, the first cylinder body and the second cylinder body are connected in the internal space.

The metal frame structure according to one aspect of the present disclosure includes a metal tubular frame. The tubular frame is configured by connecting a plurality of cylindrical bodies along the length, and an internal space communicating along the length is formed. At least one of the plurality of cylinders is a curved cylinder having a curved shape in a side view. The curved cylinder has a plurality of notches open toward the inner peripheral side of the curved shape in a side view.

According to the present disclosure, it is possible to provide a metal frame structure that is easy to improve expandability and assemblability.

FIG. 1 is a schematic perspective view of the metal frame structure according to the first embodiment. FIG. 2 is a schematic exploded perspective view of the same metal frame structure. FIG. 3A is a schematic exploded perspective view showing a main part of the same metal frame structure. FIG. 3B is a schematic exploded perspective view showing a main part of the same metal frame structure. FIG. 4A is a schematic exploded perspective view showing a main part of the same metal frame structure. FIG. 4B is a schematic exploded perspective view showing a main part of the same metal frame structure. FIG. 5A is a schematic perspective view showing a main part of the same metal frame structure. FIG. 5B is a schematic perspective view showing a main part of the same metal frame structure. FIG. 6A is a schematic perspective view showing a curved cylinder of the same metal frame structure. FIG. 6B is a schematic perspective view showing a curved cylinder of the same metal frame structure. FIG. 7 is a schematic perspective view showing an example of use of the same metal frame structure. FIG. 8 is a schematic perspective view showing a main part of the same metal frame structure. FIG. 9 is a schematic perspective view showing a main part of the same metal frame structure. FIG. 10 is a schematic perspective view showing a main part of the same metal frame structure. FIG. 11A is a schematic exploded perspective view showing a main part of the same metal frame structure. FIG. 11B is a schematic perspective view showing a main part of the same metal frame structure. FIG. 12 is a schematic perspective view of the metal frame structure according to the first modification of the first embodiment. FIG. 13 is a schematic perspective view of the metal frame structure according to the second embodiment. FIG. 14A is a schematic exploded perspective view showing a branching joint of the same metal frame structure. FIG. 14B is a schematic perspective view showing a branching joint of the same metal frame structure. FIG. 15 is a schematic perspective view of the metal frame structure according to the modified example of the second embodiment.

(Embodiment 1)
[1] Outline First, an outline of the metal frame structure 100 according to the present embodiment will be described with reference to FIGS. 1 to 6B.

The metal frame structure 100 comprises various structures such as a workbench used in a factory, a table or bench used in a restaurant, or a shelf or a bed used in a house, and is made of a metal tubular frame 10. do. That is, the metal frame structure 100 constitutes, for example, a structure as furniture (including furniture) such as a workbench, a table, a bench, a shelf, or a bed having sufficient strength by the metal tubular frame 10. do. The structure composed of the metal frame structure 100 is used in a state of being installed on the installation surface S1 made of, for example, the floor surface or the ground of the building.

In the metal frame structure 100, the tubular frame 10 is configured by connecting a plurality of cylinders including the first cylinder 1 and the second cylinder 2 along the length. That is, one tubular frame 10 is configured by connecting a plurality of tubular bodies including the first tubular body 1 and the second tubular body 2. Here, it is possible to configure a tubular frame 10 having various shapes depending on how a plurality of tubular bodies constituting the tubular frame 10 are combined, the shape of the tubular body to be used, and the like. That is, by appropriately combining a plurality of cylinders selected from various cylinders, a structure having an arbitrary shape according to the application can be realized as the metal frame structure 100, and the metal frame structure can be realized. The expandability as 100 becomes high. The metal frame structure 100 according to the present embodiment is configured so that various members such as a workbench top plate 71 (see FIG. 7) can be attached by using an attachment such as a bracket 61 (see FIG. 7). It is possible to realize a wider variety of structures.

By the way, even when expandability is ensured, for example, in a configuration in which a plurality of cylinders are screwed to each other using an L-shaped connecting metal fitting as in the above-mentioned related technology, the connecting metal fitting is screwed to the cylinder. Until then, since multiple cylinders are not temporarily assembled, the assemblability is low. On the other hand, the metal frame structure 100 according to the present embodiment realizes the metal frame structure 100 which is easy to improve the expandability and the assembling property by the following configuration.

That is, the metal frame structure 100 according to the present embodiment includes a metal tubular frame 10 and a coupling fitting 41. The tubular frame 10 is configured by connecting a plurality of cylinders including the first cylinder 1 and the second cylinder 2 along the length, and is configured as an internal space Sp1 (communicating along the length). (See FIG. 2) is formed. The coupling metal fitting 41 connects the first tubular body 1 and the second tubular body 2. The surface 11 of the first cylinder 1 facing the second cylinder 2 includes a support surface 111 that intersects the length and faces in one direction, and the support surface 111 has a second direction opposite to the one direction. The movement of the cylinder 2 of 2 is restricted. The joint fitting 41 is partially fixed to the second cylinder 2 in the second cylinder 2, and the portion of the second cylinder 2 protruding from the facing surface 21 with the first cylinder 1 is the second. By being fixed to the cylinder 1 of 1, the first cylinder 1 and the second cylinder 2 are connected in the internal space Sp1.

According to this configuration, the tubular frame 10 is configured by connecting a plurality of cylinders including the first cylinder 1 and the second cylinder 2 along the length, so that a combination of the plurality of cylinders can be combined. Cylindrical frames 10 having various shapes can be configured depending on the shape of the cylinder and the shape of the cylinder to be used. That is, the expandability of the metal frame structure 100 is increased. Then, when the second cylinder 2 is combined with the first cylinder 1 from the one-way side, the second cylinder 2 in the direction opposite to the one direction on the support surface 111 of the first cylinder 1. The movement of the cylinder 2 is restricted. In this state, the first cylinder 1 and the second cylinder 2 are temporarily assembled, and the assemblability of the metal frame structure 100 is improved. Therefore, it is possible to realize the metal frame structure 100 which is easy to improve the expandability and the assembling property. Further, since the coupling metal fitting 41 couples the first cylinder body 1 and the second cylinder body 2 in the internal space Sp1 of the tubular frame 10, the first cylinder body 1 and the second cylinder body 2 are combined. It is easy to secure sufficient strength as the bond strength.

Further, in the metal frame structure 100 according to the present embodiment, the internal space Sp1 of the tubular frame 10 can be used, for example, for passing wiring or the like. That is, in the configuration in which a plurality of cylinders are screwed together using an L-shaped connecting metal fitting as in the above-mentioned related technology, the internal space of the plurality of cylinders is divided at the connecting portion between the plurality of cylinders. Therefore, for example, wiring or the like connected to the content structure cannot be passed through the inside of the cylinder. On the other hand, in the metal frame structure 100 according to the present embodiment, since the internal space Sp1 of the tubular frame 10 communicates along the length, for example, wiring or the like can be performed by using this internal space Sp1. It can be passed through the tubular frame 10.

Further, the metal frame structure 100 according to the present embodiment also adopts the following configuration. That is, the metal frame structure 100 is configured by connecting a plurality of cylinders along the length, and includes a metal tubular frame 10 in which an internal space Sp1 communicating along the length is formed. .. Here, as shown in FIGS. 6A and 6B, at least one of the plurality of cylinders is a curved cylinder having a curved shape in a side view. The curved cylinder has a plurality of notches 12 that are open toward the inner peripheral side of the curved shape in a side view. In the present embodiment, as an example, the first cylinder 1 of the plurality of cylinders constituting the tubular frame 10 is a "curved cylinder" and has a plurality of notches 12.

According to this configuration, as shown in FIG. 6A, the straightly extending first tubular body 1 is curved so as to narrow the plurality of notches 12, so that the first tubular body 1 is curved in the side view as shown in FIG. 6B. It is possible to form a "curved cylinder". As a result, for example, a linear cylinder (first cylinder 1) formed by extrusion molding or the like is easily "curved cylinder" by forming a plurality of notched portions 12 and then bending the cylinder. Can be realized. Since such a curved cylinder (first cylinder 1) is composed of one metal plate having a continuous outer peripheral surface of the curved shape, it is possible to realize a smooth curved shape by the metal plate. be. Moreover, since the plurality of notches 12 are provided, it is easy to realize a curved cylinder (first cylinder 1) having an arbitrary curvature. Therefore, it is possible to realize the metal frame structure 100 which is easy to improve the expandability and the assembling property.

[2] Definition In the present disclosure, the vertical direction in the installed state (state of FIG. 1) of the metal frame structure 100 on the installation surface S1 is defined as the height direction D1. Further, in the present embodiment, for convenience of explanation, the front-rear direction D2 and the left-right direction D3 are defined with reference to the direction seen from the person H1 (see FIG. 7) standing in front of the metal frame structure 100 in the installed state. That is, the front-rear direction D2 corresponds to the depth direction of the metal frame structure 100, and the left-right direction D3 corresponds to the width direction of the metal frame structure 100. The height direction D1, the front-rear direction D2, and the left-right direction D3 are orthogonal to each other.

The "structure" referred to in the present disclosure is a structure such as furniture (including furniture) composed of a tubular frame 10 of a metal frame structure 100, and includes a workbench, a table, a bench, a shelf, a bed, or the like. include. Further, the structure may be a private room such as a booth, a prefabricated hut, or a storage room. In the present embodiment, as an example, a case where the structure composed of the tubular frame 10 of the metal frame structure 100 is a workbench used in a factory will be described, but it is not intended to limit the use of the structure.

The "cylindrical body" referred to in the present disclosure is formed into a rectangular cylinder having a rectangular cross section, a cylinder having a circular cross section, or a cylinder having a polygonal cross section (including a triangular shape, a pentagonal shape, a hexagonal shape, etc.). Means a member. In particular, the plurality of cylinders (including the first cylinder 1 and the second cylinder 2) constituting the metal tubular frame 10 are all made of a metal pipe material (metal pipe). In the present embodiment, as an example, a case where a plurality of cylinders are all square cylinders having a rectangular cross section will be described, but the purpose is not to limit the shape of the cylinders to a square cylinder.

The term "metal" as used in the present disclosure includes members formed of various metals as materials, and includes various members such as stainless steel, iron, aluminum, carbon steel, alloy steel, and copper. Further, the "metal" tubular frame 10 is not limited to the case of being made of one kind of metal, but may be made of, for example, a plurality of cylinders made of different kinds of metals, or a plurality of cylinders. Kind of metal may form a multi-layer structure. Further, the tubular frame 10 may have at least a metal skeleton, and may have, for example, a non-metal coating, a plating layer, a coating film, or the like formed on the surface thereof. The material, thickness, and the like of each component of the metal frame structure 100 are set so as to maintain sufficient strength required for each component.

The term "parallel" as used in the present disclosure means, in addition to the case where two straight lines on one plane do not intersect with each other no matter how long they are extended, that is, the angle between the two is exactly 0 degrees (or 180 degrees). , It means that the angle between the two is within an error range of about several degrees (for example, less than 10 degrees) with respect to 0 degrees. Similarly, the term "right angle" as used in the present disclosure means that the angle between the two parties intersects exactly at 90 degrees, and the angle between the two parties is about several degrees (for example, less than 10 degrees) with respect to 90 degrees. It means that the relationship is within the error range of.

[3] Details Next, the details of the metal frame structure 100 according to the present embodiment will be described with reference to FIGS. 1 to 11B. In the present embodiment, as described above, the tubular frame 10 of the metal frame structure 100 constitutes a workbench used in a factory as a structure. On this workbench, for example, a person H1 (worker) performs work such as processing, assembling, or inspecting a product. Further, in the present embodiment, as an example, the metal frame structure 100 is a stationary type. That is, the metal frame structure 100 is only placed on the installation surface S1 and can be installed without processing the installation surface S1.

[3.1] Overall Configuration As shown in FIGS. 1 and 2, the metal frame structure 100 includes a cylindrical frame 10, a top connecting portion 51, a side connecting portion 52, a bracing portion 53, and a base portion. 54 and. In the present embodiment, the metal frame structure 100 is a pair (two) cylinders connected by a plurality of (here, three) top connecting portions 51 and a plurality of (here, four) side connecting portions 52. It is a "double frame structure" including the shaped frame 10. That is, the pair of tubular frames 10 are arranged in parallel with each other and are integrated by a plurality of top connecting portions 51 and a plurality of side connecting portions 52 so as to form a so-called ladder shape (ladder shape).

Further, each tubular frame 10 includes a plurality of (here, two) first cylinders 1, one second cylinder 2, and a plurality of (here, two) third cylinders 3. ,have. The plurality of first cylinders 1, one second cylinder 2, and the plurality of third cylinders 3 are connected along the "length" of the tubular frame 10. It constitutes a cylindrical frame 10 of a book. Specifically, the third cylinder 3 is connected to both ends of the second cylinder 2 having a length along the left-right direction D3 in the longitudinal direction via the first cylinder 1, respectively. By extending the tubular body 3 of 3 downward, the tubular frame 10 as a whole forms a substantially C-shape (arch shape) open downward. That is, the cylindrical frame 10 has a substantially C-shaped "length" that is open downward when viewed from the front.

Further, the metal frame structure 100 includes, for example, a metal frame such as a screw (including a bolt), a washer, a nut, etc. that connects the first cylinder 1 or the second cylinder 2 and the fitting 41. Further, a fastener for connecting the components of the structure 100 to each other is provided. However, these fasteners are merely one means for fastening the components to each other, and can be replaced by other means. Therefore, in FIGS. 1 and the like, these fasteners are appropriately shown. It is omitted.

In the metal frame structure 100 according to the present embodiment, the tubular frame 10 is roughly classified into a leg portion erected on the installation surface S1 and a top portion supported by the leg portion according to its shape. .. The legs have a length along the height direction D1 so as to be orthogonal to the installation surface S1. The top portion has a length along the left-right direction D3 so as to be parallel to the installation surface S1. In the present embodiment, as an example, of the plurality of cylinders constituting the tubular frame 10, the third cylinder 3 is the “leg portion” and the second cylinder 2 is the “top portion”. The first tubular body 1 connects the leg portion (third tubular body 3) and the top portion (second tubular body 2).

The pair of tubular frames 10 formed in the same shape are arranged so as to face each other in the front-rear direction D2, and are connected by a plurality of top connecting portions 51 and a plurality of side connecting portions 52. Specifically, the top portions (second tubular body 2) of the pair of tubular frames 10 are connected by a plurality of (three in this case) top connecting portions 51. The legs (third tubular body 3) of the pair of tubular frames 10 are connected by a plurality of (here, four) side connecting portions 52.

Each top connecting portion 51 has a length along the front-rear direction D2 so as to be orthogonal to the second cylinder 2, and connects the pair of second cylinders 2 separated from each other in the front-rear direction D2. .. That is, both ends of each top connecting portion 51 in the longitudinal direction are joined to the second cylinder 2, so that the pair of second cylinders 2 are connected by the top connecting portion 51. The joining of the top connecting portion 51 and the second tubular body 2 is realized by, for example, welding or bonding, or a combination thereof. Here, as an example, the three top connecting portions 51 are arranged at equal intervals in the left-right direction D3.

Each side connecting portion 52 has a length along the front-rear direction D2 so as to be orthogonal to the third cylinder 3, and connects a pair of third cylinders 3 separated from each other in the front-rear direction D2. .. That is, both ends of each side connecting portion 52 in the longitudinal direction are joined to the third tubular body 3, so that the pair of third tubular bodies 3 are connected by the side connecting portion 52. The length dimension of the side connecting portion 52 is the same as the length dimension of the top connecting portion 51. The joining of the side connecting portion 52 and the third tubular body 3 is realized by, for example, welding or bonding, or a combination thereof. Here, as an example, since two side connecting portions 52 separated from each other in the height direction D1 are provided for the pair of third cylinders 3, a total of four side connecting portions are provided for the two pairs of third cylinders 3. A portion 52 is provided.

Here, the plurality of top connecting portions 51 and the plurality of side connecting portions 52 connect the pair of tubular frames 10 so as to communicate between the internal spaces Sp1 of the pair of tubular frames 10. Specifically, an opening corresponding to the cross-sectional shape of the top connecting portion 51 is formed at the joint portion of the top connecting portion 51 in the second cylinder 2, and the inside of the pair of second cylinders 2 is provided. The spaces Sp1 are connected to each other through the top connecting portion 51. Similarly, an opening corresponding to the cross-sectional shape of the side connecting portion 52 is formed at the joint portion of the side connecting portion 52 in the third cylinder 3, and the internal space Sp1 of the pair of third cylinders 3 is formed. They are connected to each other through the inside of the side connecting portion 52.

Further, in the present embodiment, a plurality of cylinders (first cylinder 1, second cylinder 2 and third cylinder 3) constituting the tubular frame 10 and a pair of tubular frames 10 are interposed. The top connecting portion 51 and the side connecting portion 52 to be connected are both hollow square cylinders having a rectangular cross section. More specifically, the cross-sectional shape of each of the plurality of cylinders is a rectangular shape having a long side along the front-rear direction D2. As a result, no matter where in the total length of the tubular frame 10 the cylindrical frame 10 is cut, a rectangular cross section having the same shape appears.

The brace 53 is a member for improving the strength and stability of the tubular frame 10, and is attached between a pair of legs (third tubular body 3) separated in the left-right direction D3. Specifically, the brace portion 53 has a length along the left-right direction D3 so as to be orthogonal to the third tubular body 3. In the present embodiment, as an example, the brace portion 53 has a hollow square cylinder with a rectangular cross section. Here, as shown in FIGS. 1 and 2, both ends of the brace portion 53 in the longitudinal direction are joined to the back surface of the third tubular body 3, so that the brace portions 53 are paired. It is attached between the legs (third cylinder 3). The joining of the brace portion 53 and the third tubular body 3 is realized by, for example, screwing, welding or gluing, or a combination thereof.

Further, since the metal frame structure 100 according to the present embodiment is a "double frame structure" including a pair (two) of tubular frames 10, the brace portion 53 is among the pair of tubular frames 10. It suffices if it is provided for at least one of them. In this embodiment, as shown in FIGS. 1 and 2, the tubular frame 10 is attached to the leg portion (third tubular body 3) of one (rear side) tubular frame 10. As a result, when the metal frame structure 100 is installed with the back surface of the metal frame structure 100 close to the wall or the like, the brace portion 53 is located near the wall, and the metal frame structure 100 (working table) is placed. It does not easily get in the way of the user H1.

The base portion 54 is attached to the lower end portion of the leg portion (third tubular body 3) of the tubular frame 10, and supports the leg portion (third tubular body 3) when the metal frame structure 100 is installed. As a result, the legs (third cylinder 3) can be erected on the installation surface S1. Specifically, the base portion 54 has a length along the front-rear direction D2 so as to be orthogonal to the third tubular body 3. In the present embodiment, as an example, the base portion 54 has a hollow square cylinder with a rectangular cross section. The base portion 54 has a abutment 541 (see FIG. 2) made of L-shaped metal fittings protruding upward from the upper surface thereof, and the abutment 541 inserted into the lower end of the third cylinder 3 is a third cylinder. By joining to the body 3, it is attached to the third tubular body 3. The joining of the abutment 541 and the third cylinder 3 is realized, for example, by screwing, welding or gluing, or a combination thereof.

Here, one base portion 54 has a pair of abutments 541 separated in the front-rear direction D2. The pair of abutments 541 are each joined to a pair of legs (third cylinder 3). That is, since one base portion 54 is provided for each pair of third cylinders 3 separated in the front-rear direction D2, a total of two base portions 54 are attached to the two pairs of third cylinders 3. become. As a result, the four legs (third cylinder 3) are erected on the installation surface S1 by being supported by the base portion 54 so as to extend upward from the top of the two base portions 54. ..

[3.2] Bonding Structure Between Cylindrical Bodies Next, the coupling structure of a plurality of tubular bodies constituting the tubular frame 10 of the metal frame structure 100 will be described in more detail with reference to FIGS. 3A to 5B. do.

In the present embodiment, the second cylinder 2 and the third cylinder 3 are connected to each other via the first cylinder 1, so that the internal space Sp1 communicates with one tubular frame 10. Consists of. That is, both ends of the first cylinder 1 in the longitudinal direction are coupled to the second cylinder 2 and the third cylinder 3, respectively. Here, the second tubular body 2 is a top portion having a length along the left-right direction D3, and the third tubular body 3 is a leg portion having a length along the height direction D1. That is, the first cylinder 1 connects the second cylinder 2 and the third cylinder 3 that are orthogonal to each other. Therefore, in the first cylinder 1, one end in the longitudinal direction (the end on the second cylinder 2 side) is extended in the left-right direction D3, and the other end in the longitudinal direction (on the third cylinder 3 side). The end) has a shape extended in the height direction D1. Specifically, the first tubular body 1 is a curved tubular body having a curved shape in a side view.

One end in the longitudinal direction of the first cylinder 1 (the end on the side of the second cylinder 2) is coupled to the second cylinder 2 by the coupling structure described below. That is, the first cylinder 1 and the second cylinder 2 are connected to each other along the length (of the tubular frame 10) so as to communicate the internal space Sp1 with the (first) coupling fitting 41. Can be connected. As shown in FIGS. 3A to 4B, a part of the coupling metal fitting 41 is inserted into the second cylinder body 2, and a part of the joint fitting 41 is fixed to the second cylinder body 2. Further, in the coupling metal fitting 41, a portion of the second cylinder 2 that protrudes from the surface 21 facing the first cylinder 1 is inserted into the first cylinder 1, and the portion is the first cylinder. It is fixed at 1. As a result, the coupling fitting 41 couples the first cylinder 1 and the second cylinder 2 in the internal space Sp1.

As an example in the present embodiment, the coupling metal fitting 41 is a U-shaped metal fitting having a substantially U-shaped cross-sectional shape orthogonal to the longitudinal direction and opened upward. In the coupling fitting 41 made of a U-shaped fitting, one end in the longitudinal direction is fixed to the second cylinder 2 in the second cylinder 2, and the other end in the longitudinal direction is fixed in the first cylinder 1. By being fixed to the cylinder 1 of 1, the first cylinder 1 and the second cylinder 2 are connected. Here, the coupling fitting 41 has a weld nut (weld nut), and the first cylinder is formed by tightening a screw to the weld nut through each of the first cylinder 1 and the second cylinder 2. It is fixed to the body 1 and the second tubular body 2.

By the way, in the present embodiment, the facing surface 11 of the first cylinder 1 with the second cylinder 2 includes a support surface 111 facing in one direction intersecting the lengths. That is, as shown in FIGS. 3A to 4B, the end surface (opposing surface 11) of the first cylinder 1 on the second cylinder 2 side is flat and orthogonal to the length (longitudinal direction) of the tubular frame 10. It has a special shape including a support surface 111 instead of a surface.

Specifically, the facing surface 11 of the first cylinder 1 with the second cylinder 2 has both ends facing one side (left or right) of the left-right direction D3 in the side view (front view). It is a flat surface with the central part facing upward, so that it is formed in a crank shape as a whole. Of such crank-shaped facing surfaces 11, the portion facing upward (central portion) becomes the supporting surface 111 facing in one direction orthogonal to the length of the tubular frame 10 (horizontal direction D3). That is, in the present embodiment, the "one direction" to which the support surface 111 is directed is upward in the installed state of the cylindrical frame 10. In particular, in the present embodiment, since the first cylindrical body 1 has a square tubular shape, it has a pair of support surfaces 111 at both ends in the front-rear direction D2.

Similarly, the surface 21 of the second cylinder 2 facing the first cylinder 1 is a plane having both ends facing one side (left or right) of the left-right direction D3 in the side view (front view). However, since the central portion is a flat surface facing downward, it is formed in a crank shape as a whole. Of such a crank-shaped facing surface 21, a portion facing downward (central portion) becomes a contact surface 211 corresponding to the support surface 111. In particular, in the present embodiment, since the second cylindrical body 2 has a square tubular shape, it has a pair of contact surfaces 211 at both ends in the front-rear direction D2.

The first cylinder 1 and the second cylinder 2 configured as described above are combined so as to abut the facing surface 11 of the first cylinder 1 and the facing surface 21 of the second cylinder 2. And are coupled by the coupling fitting 41. That is, the first cylinder 1 and the second cylinder 2 each have crank-shaped facing surfaces 11 and 21, and these crank-shaped facing surfaces 11 and 21 are combined so as to abut each other. At this time, the contact surface 211 of the facing surface 21 of the second cylinder 2 comes into contact with the support surface 111 of the facing surface 11 of the first cylinder 1. As a result, the first cylinder 1 restricts the movement of the second cylinder 2 in the direction opposite to one direction (that is, downward) on the support surface 111. In short, the contact surface 211 of the second cylinder 2 comes into contact with the support surface 111 of the first cylinder 1, so that the weight of the second cylinder 2 is supported by the first cylinder 1. Therefore, the downward movement of the second cylinder 2 is restricted.

When connecting the first cylinder 1 and the second cylinder 2, more specifically, as shown in FIGS. 3A to 5B, the coupling metal fitting 41 is first fixed to the second cylinder 2, and this state is achieved. Then, the second cylinder 2 is combined with the first cylinder 1 from above. At this time, the portion of the coupling fitting 41 that protrudes from the facing surface 21 of the second cylinder 2 with the first cylinder 1 is inserted into the first cylinder 1. In this state, although the coupling between the first cylinder 1 and the second cylinder 2 is not completed, the weight of the second cylinder 2 is supported by the support surface 111 of the first cylinder 1. As a result, temporary assembly of the first cylinder 1 and the second cylinder 2 is realized. Finally, by fixing the coupling fitting 41 to the first cylinder 1, the coupling between the first cylinder 1 and the second cylinder 2 is completed.

Further, when removing the second cylinder 2 from the first cylinder 1, the procedure is basically the opposite of the above procedure. That is, first, the coupling between the first cylinder 1 and the coupling fitting 41 is released, and in this state, the second cylinder 2 is lifted upward with respect to the first cylinder 1, whereby the first cylinder 1 is released. The second cylinder 2 is separated from the cylinder 1.

Further, in the present embodiment, the facing surface 11 of the first cylinder 1 and the facing surface 21 of the second cylinder 2 include a convex portion 112 and a concave portion 212, respectively. The convex portion 112 and the concave portion 212 are arranged at positions where they abut against each other, and are arranged at the central portion of the facing surface 11 and the facing surface 21 in the front-rear direction D2 as an example in the present embodiment. As a result, when the first cylinder 1 and the second cylinder 2 are connected, the convex portion 112 fits into the concave portion 212, so that the first cylinder 1 and the second cylinder 2 (in the front-rear direction). Positioning (in D2) is made, and the work of joining the first cylinder 1 and the second cylinder 2 becomes easier. In particular, the coupling fitting 41 is one size smaller than the inner dimension of the first cylinder 1 or the second cylinder 2, and there is play between the coupling fitting 41 and the first cylinder 1 or the second cylinder 2. Even when (gap) is generated, the convex portion 112 and the concave portion 212 make it easy to align the first cylinder body 1 and the second cylinder body 2.

On the other hand, the other end of the first cylinder 1 in the longitudinal direction (the end on the third cylinder 3 side) is coupled to the third cylinder 3 by the coupling structure described below. That is, the first cylinder 1 and the third cylinder 3 are connected to the (second) coupling fitting 42 along the length (of the tubular frame 10) so as to communicate the internal space Sp1. Can be connected. As shown in FIGS. 3A to 4B, a part (lower end portion) of the coupling fitting 42 is inserted into the third cylinder 3, and the part is fixed to the third cylinder 3. Further, in the coupling metal fitting 42, a portion (upper end portion) of the third cylinder 3 that protrudes from the surface facing the first cylinder 1 is inserted into the first cylinder 1, and the portion is the first. It is fixed to the cylinder 1 of. As a result, the coupling fitting 42 couples the first cylinder 1 and the third cylinder 3 in the internal space Sp1.

In the present embodiment, as an example, the coupling fitting 42 is made of a U-shaped fitting and has a weld nut (weld nut) like the coupling fitting 41. Therefore, the coupling fitting 42 is fixed to the first cylinder 1 and the third cylinder 3 by tightening the screw to the welding nut through each of the first cylinder 1 and the third cylinder 3. Further, in the present embodiment, the same unevenness as the convex portion 112 and the concave portion 212 is formed on the facing surfaces of the first tubular body 1 and the third tubular body 3, respectively. As a result, the first cylinder 1 and the third cylinder 3 are positioned (in the front-rear direction D2), and the work of connecting the first cylinder 1 and the third cylinder 3 becomes easier. ..

[3.3] Curved Cylindrical Body Next, the first tubular body 1, which is a curved tubular body, will be described in more detail with reference to FIGS. 6A and 6B.

As described above, at least one of the plurality of cylinders constituting the tubular frame 10 (here, the first cylinder 1) is a curved cylinder having a curved shape in a side view. The curved cylinder (first cylinder 1) has a plurality of notches 12 that are open toward the inner peripheral side of the curved shape in a side view. In the present embodiment, the first cylinder 1 connects the second cylinder 2 and the third cylinder 3 that are orthogonal to each other, so that the first cylinder 1 is curved at an angle of about 90 degrees.

Here, in general, it is difficult to realize such a curved shape in a metal cylinder. That is, for example, since the metal cylinder formed by extrusion molding or the like is originally a linear cylinder, it is necessary to bend the cylinder (bending) in order to obtain a curved cylinder. However, if the strength of the cylinder is sufficient, it is difficult to bend the cylinder by bending, and it is very difficult to bend the cylinder to about 90 degrees like the first cylinder 1. Is. It is possible to form a bellows-shaped cylinder by forming the cylinder with a thin wall, and to bend a part of the bellows shape to bend the cylinder, but in this case, sufficient strength of the cylinder is secured. Not done.

On the other hand, in the metal frame structure 100 according to the present embodiment, a plurality of curved cylinders (first cylinder 1) having a plurality of notches 12 opened toward the inner peripheral side of the curved shape. By having the notch portion 12 of the above, it is possible to realize a curved shape. Specifically, the first tubular body 1 has, for example, a plurality of side view triangular notches 12 in the longitudinal direction, as shown in FIG. 6A. Here, as an example, the plurality of notches 12 are formed by a three-dimensional laser machine. Further, the plurality of notches 12 are not limited to the shape of a triangular shape when viewed from the side. Further, the plurality of notches 12 may have different shapes depending on the position.

According to this configuration, the straightly extending first cylinder 1 is curved so as to narrow the plurality of notches 12, thereby forming a “curved cylinder” that is curved in the side view as shown in FIG. 6B. It is possible to do. As a result, a "curved cylinder" can be easily realized. Since such a curved cylinder (first cylinder 1) is composed of one metal plate having a continuous outer peripheral surface of the curved shape, it is possible to realize a smooth curved shape by the metal plate. be. Moreover, since the plurality of notches 12 are provided, it is easy to realize a curved cylinder (first cylinder 1) having an arbitrary curvature while ensuring the strength as a cylinder. In particular, if at least a part of the opening peripheral edge of each cutout portion 12 is joined by an appropriate means such as welding or adhesion after the bending process, the cutout portion 12 can be prevented from opening. , It is easy to maintain the shape (curvature) of the curved cylinder, and it is easy to secure the strength.

By the way, in the metal frame structure 100 according to the present embodiment, the internal space Sp1 of the tubular frame 10 includes a wiring space for passing wiring. That is, the internal space Sp1 of the tubular frame 10 communicates with a plurality of tubular bodies (including the first tubular body 1, the second tubular body 2, and the third tubular body 3) constituting the tubular frame 10. Therefore, it is possible to pass the wiring through this internal space Sp1. Thereby, for example, wiring such as a power cable or a communication line can be passed along the cylindrical frame 10 while suppressing the exposure of the wiring around the metal frame structure 100.

Here, as described above, the curved cylinder (first cylinder 1) has a plurality of notches 12 that are open toward the inner peripheral side of the curved shape. Such a curved cylinder (first cylinder 1) is composed of a single metal plate having a curved outer peripheral surface continuous. Therefore, even when the wiring is passed through the curved cylinder (first cylinder 1), there is an advantage that the wall surface on the outer peripheral side of the curved cylinder is less likely to be caught and the wiring is easily passed.

[3.4] Extended Function Next, the extended function of the metal frame structure 100 according to the present embodiment will be described with reference to FIGS. 7 to 10.

As shown in FIG. 7, the metal frame structure 100 according to the present embodiment is configured so that various members such as the top plate 71 and the panel 72 of the workbench can be attached. Members such as the top plate 71 or the panel 72 are detachably attached to the metal frame structure 100. This makes it possible to easily provide the metal frame structure 100 with a desired extended function. FIG. 7 shows, as an example, a workbench used by the person H1 in a standing posture, but the present invention is not limited to this mode. For example, the person H1 uses the workbench in a sitting position (sitting position). You may.

In the present embodiment, as shown in FIG. 7, the top plate 71 of the workbench is fixed to the tubular frame 10 by the bracket 61 attached to the leg portion (third cylindrical body 3). One bracket 61 is attached to one third tubular body 3, and a total of four brackets 61 are attached to the metal frame structure 100. Therefore, the top plate 71 is installed so as to be bridged between a pair of legs (third cylinder 3) separated in the left-right direction D3, and is adjusted to the size of the metal frame structure 100. An appropriate top plate 71 can be installed.

Further, a reinforcing plate 81 is fixed to a portion of the third tubular body 3 to which the bracket 61 is attached by an appropriate means such as welding or adhesion. That is, the bracket 61 is attached to the reinforcing plate 81, which makes it easy to secure sufficient strength for attaching the top plate 71. Further, in the present embodiment, the bracket 61 is formed with a plurality of holes in the height direction D1 (see FIG. 9), and any hole among the plurality of holes is used, for example, by a screw to form the bracket 61. Is removably attached to the reinforcing plate 81. Therefore, it is possible to adjust the height of the top plate 71 depending on which of the plurality of holes is used.

The panel 72 is used, for example, as a partition or a whiteboard. In the present embodiment, as shown in FIG. 8, the panel 72 is fixed to the tubular frame 10 by a mounting bracket 62 having an L-shaped cross section attached to the lower surface of the top portion (second cylindrical body 2). .. One or more sets of mounting brackets 62 are attached to one second tubular body 2 as a set of two. The two (pair) mounting brackets 62 of each set are arranged so as to face each other in the front-rear direction D2, and hold the panel 72 so as to sandwich a part of the panel 72 between them. In the example of FIG. 8, three sets, that is, six mounting brackets 62 hold the upper end portion of the panel 72 so as to suspend the panel 72.

Further, the mounting bracket 62 has a first hole 621 used for mounting on the tubular frame 10 (second cylindrical body 2) and a second hole 622 used for mounting the panel 72. The first hole 621 is a long hole long in the front-rear direction D2, whereby the mounting position of the mounting bracket 62 to the second cylinder 2 in the front-rear direction D2 can be adjusted. Further, the second hole 622 is a long hole long in the left-right direction D3, whereby the mounting position of the panel 72 on the mounting bracket 62 in the left-right direction D3 can be adjusted. Therefore, panels 72 of various thicknesses and types can be mounted by the mounting bracket 62. Further, a reinforcing plate 82 is fixed to a portion of the second tubular body 2 to which the mounting bracket 62 is attached by an appropriate means such as welding or adhesion. That is, the mounting bracket 62 is mounted on the reinforcing plate 82, which makes it easy to secure sufficient strength for mounting the panel 72.

Further, as shown in FIG. 9, various wiring devices 73 such as an outlet, a switch, a USB outlet, a terminal block, and a wire hole can be attached to the third cylinder 3 as a leg. Specifically, the third tubular body 3 has a plurality of opening holes 31 in the height direction D1, and a wiring device can be attached to at least one of the plurality of opening holes 31. In particular, for the opening hole 31 to which the wiring device cannot be attached, a cover 74 may be attached to cover the opening hole 31, or the opening hole 31 may be used as a work hole through which wiring is passed.

Further, as shown in FIG. 9, a charging stand 75 can be attached to the side connecting portion 52. The charging stand 75 is attached so as to be hooked on the side connecting portion 52. The charging stand 75 has, for example, a wireless charger that non-contactly charges a mobile terminal such as a smartphone. Both the wiring connected to the wiring device 73, the charging stand 75, and the like can be accommodated in the internal space Sp1 of the tubular frame 10.

As described above, in the metal frame structure 100 according to the present embodiment, the tubular frame 10 has an attachment attachment portion to which the attachment can be detachably attached. The "attachment" referred to here includes a bracket 61, a mounting bracket 62, a wiring device 73, a cover 74, a charging stand 75, and the like. Further, the "attachment mounting portion" referred to here includes the reinforcing plates 81, 82, the opening holes 31, the side connecting portion 52, and the like. According to this configuration, any attachment can be attached to the cylindrical frame 10.

Further, as shown in FIG. 10, the metal frame structure 100 according to the present embodiment further includes a hanging frame 63. The suspension frame 63 projects downward from a portion of the tubular frame 10 along the horizontal plane in the installed state of the tubular frame 10. The suspension frame 63 has an instrument support portion 631 that supports the instrument 76. In the example of FIG. 10, the suspension frame 63 is attached to the lower surface of the top connecting portion 51 or the second cylinder 2 along the horizontal plane, and extends downward from the top connecting portion 51 or the second cylinder 2. There is. Specifically, the hanging frame 63 is fixed to the reinforcing plate 82 fixed to the lower surface of the top connecting portion 51. As the appliance 76, for example, a display, a camera, a speaker, a microphone, an intercom, a lighting fixture, a cooking utensil, or the like is attached to the hanging frame 63. Further, the suspension frame 63 is formed with a wire hole 632, and the wiring connected to the appliance 76 can be pulled out through the wire hole 632. Here, the reinforcing plate 82 is formed with a through hole communicating with the internal space Sp1 of the top connecting portion 51 or the second tubular body 2. Therefore, it is possible to route the wiring in the suspension frame 63 through the through hole. By providing such a hanging device 76, for example, the space on the top plate 71 can be effectively used. Further, the fixing structure of the hanging frame 63 is not limited to the structure fixed to the reinforcing plate 82. For example, as shown by an imaginary line (dashed-dashed line) in FIG. 10, the hanging frame 63 may be attached so as to be hooked on a joint portion with the top connecting portion 51 in the second tubular body 2. That is, the hanging frame 63 shown by the imaginary line in FIG. 10 is joined to the hook metal fitting attached so as to be hooked on the second cylinder 2 (so as to sandwich the second cylinder 2 in the height direction D1). By doing so, it protrudes downward from the second cylinder 2. In this case, the reinforcing plate 82 can be omitted. The mounting structure using such a hooking bracket is not limited to the fixing structure of the hanging frame 63, and can be applied to, for example, the fixing structure of the panel 72 (mounting bracket 62).

Further, as shown in FIG. 10, the metal frame structure 100 according to the present embodiment further includes a light emitting unit 64 arranged in the internal space Sp1. The tubular frame 10 has a translucent portion 641 that transmits light from the light emitting portion 64 on the outer peripheral surface. In the example of FIG. 10, the translucent portion 641 is arranged on the lower surface of the second tubular body 2. The translucent portion 641 is made of, for example, a hole (including a slit) or a transparent window made of acrylic or the like. According to this configuration, light corresponding to the shape of the translucent portion 641 can be emitted from the tubular frame 10. For example, when the translucent unit 641 imitates some characters or patterns, it can irradiate light corresponding to these characters or patterns. Further, by arranging the liquid crystal display in the translucent portion 641, it can be used like a projector.

[3.5] Height Adjusting Mechanism Next, the height adjusting mechanism of the metal frame structure 100 according to the present embodiment will be described with reference to FIGS. 11A and 11B.

The metal frame structure 100 according to the present embodiment further includes a height adjusting mechanism for adjusting the height of the legs from the installation surface S1. Here, the leg portion is a portion of the plurality of cylinders constituting the tubular frame 10 that is erected on the installation surface S1 in the installed state of the tubular frame 10, and is the third cylinder in the present embodiment. Body 3.

In the present embodiment, the height adjusting mechanism includes an elongated hole 32 formed at the lower end of the leg portion (third tubular body 3) and an adjuster 542 provided on the lower surface of the base portion 54. .. That is, in the present embodiment, the abutment 541 is fixed to the third cylinder 3 in a state where the abutment 541 projecting upward from the upper surface of the base portion 54 is inserted into the lower end portion of the third cylinder 3. By doing so, the third tubular body 3 is erected on the base portion 54. Here, the elongated hole 32 for fixing the abutment 541 to the third tubular body 3 is formed long in the height direction D1 as shown in FIG. 11A. Therefore, the position of the third cylinder 3 in the height direction D1 with respect to the base portion 54 can be adjusted, whereby the height adjusting mechanism is realized.

Further, the adjuster 542 is configured so that the amount of protrusion from the lower surface of the base portion 54 can be adjusted. Therefore, by operating the adjuster 542, the position of the base portion 54 in the height direction D1 with respect to the installation surface S1 can be adjusted, thereby realizing the height adjusting mechanism. However, the height adjusting mechanism may be realized only by one of the elongated hole 32 and the adjuster 542. Further, the height adjusting mechanism may be provided only on a part of the plurality of legs (third tubular body 3).

By providing such a height adjusting mechanism, it is possible to stably install the metal frame structure 100 even if the installation surface S1 is inclined or distorted, for example. In particular, when the tubular frame 10 includes a curved cylinder (first cylinder 1), it is difficult to precisely align the heights of the metal frame structures 100 in consideration of the shape variation of the curved cylinder. be. Therefore, it is very useful to be able to adjust the height of the legs by the height adjustment mechanism.

[4] Modification Example 1 is only one of various embodiments of the present disclosure. The first embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Each figure described in the present disclosure is a schematic view, and the ratio of the size and the thickness of each component in each figure does not necessarily reflect the actual dimensional ratio. Hereinafter, modified examples of the first embodiment are listed. The modifications described below can be applied in combination as appropriate.

[4.1] First Modified Example As shown in FIG. 12, the metal frame structure 100 according to the first modified example adopts a configuration symmetrical in the front-rear direction D2. In this metal frame structure 100, the top plate 71 of the workbench can be used from both the front-rear direction D2. Therefore, for example, two people H1 (workers) can use the metal frame structure 100 at the same time.

Further, in the metal frame structure 100 according to the first modification, both ends of the bracing portion 53 in the longitudinal direction are not directly joined to the third tubular body 3, but in the front-rear direction D2. It is joined to a side connecting portion 52 that connects a pair of separated third cylinders 3 to each other. Even in this case, the brace portion 53 is attached between the pair of leg portions (third tubular body 3) separated in the left-right direction D3, and the strength and stability of the tubular frame 10 can be improved. can. With such an arrangement, the brace 53 is located at the center of the metal frame structure 100 in the front-rear direction D2, and a person who uses the metal frame structure 100 (workbench) from both sides in the front-rear direction D2. It is hard to get in the way of H1.

Further, in the metal frame structure 100 according to the first modification, an option 65 such as a shelf or a bed is placed on the second cylinder 2 which is a top portion. Option 65 is detachably attached to the second cylinder 2.

[4.2] Other variants

The various configurations adopted by the metal frame structure 100 are not limited to "metal", and can be applied to, for example, carbon fiber reinforced plastic (carbon composite), other resin products, wood and the like.

Further, the facing surface 11 of the first cylindrical body 1 may include a support surface 111 facing in one direction orthogonal to the length of the tubular frame 10 (left-right direction D3), and is not limited to the crank shape. For example, it may be a tapered surface that is inclined at an angle.

Further, the brace portion 53 is not an essential configuration for the metal frame structure 100, and can be omitted as appropriate. In particular, when the top plate 71 as described in the first embodiment is attached between the leg portions (third cylinder 3) separated in the left-right direction D3, even if the brace portion 53 is omitted, the ceiling plate 71 is heavenly. The plate 71 can improve the strength and stability of the tubular frame 10. Further, in addition to or in place of the brace portion 53, two diagonally extending brace members (shown by an imaginary line (dashed-dotted line) in FIG. 7) may be provided so as to intersect each other. When such a brace member is joined to the third tubular body 3, the brace portion 53 is joined to, for example, the base portion 54. Further, the diagonal brace member is not limited to the third tubular body 3, and may be hung between, for example, the side connecting portion 52 and the base portion 54.

Further, the base portion 54 is not an essential configuration for the metal frame structure 100, and can be omitted as appropriate. For example, when the metal frame structure 100 is not a stationary type but a fixed position type, the base portion 54 is omitted. In this case, a fixing member is used instead of the base portion 54, and the fixing member is fixed to the installation surface S1 by, for example, screwing or adhering, or a combination thereof, so that the leg portion (third cylinder) is used. The body 3) is erected on the installation surface S1. In the case of the fixed position fixed type, the abutment 541 joined to the lower end portion of the leg portion (third tubular body 3) is provided on the fixing member instead of the base portion 54. That is, the fixing member has a pedestal 541 composed of L-shaped metal fittings protruding upward from the upper surface thereof, and the pedestal 541 inserted into the lower end portion of the third cylinder 3 is attached to the third cylinder 3. It is attached to the third tubular body 3 by joining them together.

(Embodiment 2)
As shown in FIG. 13, the metal frame structure 100A according to the present embodiment is different from the metal frame structure 100 according to the first embodiment in that it includes a branching joint 9. Hereinafter, the same configurations as those in the first embodiment will be designated by a common reference numeral and description thereof will be omitted as appropriate.

The metal frame structure 100A shown in FIG. 13 adopts a configuration symmetrical in the left-right direction D3. Specifically, the tubular frames 10 having the same double frame structure as in the first embodiment are arranged side by side in the left-right direction D3, and the tubular frames 10 having the double frame structure are connected to each other by the branching joint 9. In this metal frame structure 100A, for example, two people H1 (workers) who line up the top plate 71 of the workbench in the left-right direction D3 can use it at the same time.

Further, the metal frame structure 100A shown in FIG. 13 further includes a tubular frame 10 having a single frame structure extending from the branching joint 9 along the front-rear direction D2, and forms a substantially T-shape in a plan view as a whole. .. The panel 72 is also attached to the tubular frame 10 having a single frame structure.

Various configurations are applied to the branching joint 9 depending on its use. In the present embodiment, as described above, the configurations shown in FIGS. 14A and 14B are adopted so that the tubular frame 10 having a double frame structure and the tubular frame 10 having a single frame structure can be combined. Specifically, the branching joint 9 includes an H-shaped joint body 91 in a plan view, a post 92 projecting downward from the joint body 91, and a side post 93 projecting from the joint body 91 along the front-rear direction D2. , Is equipped. Further, the reinforcing plate 94 and the cover 95 are joined to the joint body 91.

A knockout type opening hole is provided at the joint portion between the post 92 and the side post 93 in the joint main body 91. Further, the cover 95 is detachably attached to the joint main body 91. An opening hole is formed at the attachment position of the cover 95 in the joint body 91. Therefore, by removing the cover 95, the opening hole can be used as a work hole for passing the wiring.

According to this configuration, various combinations of tubular frames 10 are possible by changing the branching joint 9. As an example, as the metal frame structure 100A according to the modified example of the second embodiment, the combination of the tubular frame 10 as shown in FIG. 15 can be realized. In FIG. 15, the metal frame structure 100A adopts a configuration symmetrical not only in the left-right direction D3 but also in the front-rear direction D2. In this metal frame structure 100A, the top plate 71 of the workbench can be used from both the front-rear direction D2. Therefore, for example, four people H1 (workers) can use the metal frame structure 100A at the same time.

The various configurations described in the second embodiment can be appropriately combined with the various configurations (including modifications) described in the first embodiment.

100,100A Metal frame structure 1 First cylinder (curved cylinder)
2 2nd cylinder 3 3rd cylinder (legs)
10 Cylindrical frame 11,21 Facing surface 12 Notch 41 Coupling bracket 63 Suspended frame 64 Light emitting part 76 Instrument 111 Support surface 631 Instrument support 641 Translucent part S1 Installation surface Sp1 Internal space

Claims (8)

A metal cylinder formed by connecting a plurality of cylinders including a first cylinder and a second cylinder along the length and forming an internal space communicating along the length. With the frame
A metal fitting for connecting the first cylinder body and the second cylinder body is provided.
The surface of the first cylinder facing the second cylinder includes a support surface facing one direction intersecting the length, and the support surface facing the direction opposite to the one direction. Regulate the movement of the second cylinder,
The joint fitting is partially fixed to the second cylinder in the second cylinder, and the portion of the second cylinder that protrudes from the surface facing the first cylinder is the first. By being fixed to the first cylinder so as to fit in the range where the support surface is formed in the cylinder 1, the first cylinder and the second cylinder are formed in the internal space. Combine and
The portion of the first cylinder in which the support surface is formed is provided with an opening for inserting the fitting into the internal space from the one direction.
Metal frame structure. The one direction is upward in the installed state of the tubular frame.
The metal frame structure according to claim 1. At least one of the plurality of cylinders is a curved cylinder having a curved shape in a side view.
The curved cylinder has a plurality of notches open toward the inner peripheral side of the curved shape in a side view.
The metal frame structure according to claim 1 or 2. The internal space includes a wiring space for passing wiring.
The metal frame structure according to any one of claims 1 to 3. A hanging frame that protrudes downward from a portion of the tubular frame along the horizontal plane in the installed state of the tubular frame is further provided.
The hanging frame has an instrument support that supports the instrument.
The metal frame structure according to any one of claims 1 to 4. The cylindrical frame has an attachment attachment portion to which the attachment can be detachably attached.
The metal frame structure according to any one of claims 1 to 5. At least one of the plurality of cylinders is a leg portion that is erected on the installation surface in the installed state of the tubular frame.
Further provided with a height adjusting mechanism for adjusting the height of the legs from the installation surface.
The metal frame structure according to any one of claims 1 to 6. Further provided with a light emitting unit arranged in the internal space,
The tubular frame has a translucent portion on the outer peripheral surface that transmits light from the light emitting portion.
The metal frame structure according to any one of claims 1 to 7 .

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