JP7197843B1 - metal frame structure - Google Patents

Abstract

A metal frame structure is provided that is mainly easy to improve assemblability. A metal frame structure (10) includes a metal tubular frame (1) and a tubular support frame (2). The support frame 2 projects upward from a portion of the tubular frame 1 along the horizontal plane when the tubular frame 1 is installed, and supports an object to be supported. The tubular frame 1 has a fixing portion 100 to which the lower end of the support frame 2 is fixed. A through hole 101 through which the support frame 2 penetrates is formed in the fixing portion 100 so that the support frame 2 is inserted upward from below. [Selection drawing] Fig. 3

Description

FIELD OF THE DISCLOSURE The present disclosure relates generally to metal frame structures, and more particularly, to frame various structures such as, for example, 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 metal frame structure including a metal tubular frame and a fitting has been proposed (see Patent Document 1, for example). The tubular frame is constructed by connecting a plurality of tubular bodies along the length, and an internal space communicating along the length is formed. The joint fitting joins the plurality of cylinders.

In the metal frame structure according to the related art, the tubular frame has two first tubular bodies, a second tubular body and two third tubular bodies, which are are connected along the "length" of to construct one tubular frame. Specifically, a third cylinder is connected via the first cylinder to both ends in the longitudinal direction of the second cylinder having a length along the left-right direction. extends downward, the tubular frame as a whole forms a substantially C-shape (arch shape) that opens downward. The tubular frame configured in this way is roughly divided into a leg part erected on an installation surface and a top part supported by the leg part, according to its shape. That is, among the plurality of cylinders forming the tubular frame, the third cylinder is the "leg" and the second cylinder is the "top". The first cylinder connects between the leg portion (third cylinder) and the top portion (second cylinder).

In the metal frame structure according to the above-mentioned related art, when supporting a device such as a display, for example, a suspension frame that protrudes downward from the top portion (second cylinder) of the tubular frame is provided. A device such as a display is attached to the frame. In this case, the internal space of the suspension frame communicates with the internal space of the second cylinder, and the wiring connected to the instrument can be routed from the second cylinder into the suspension frame. Since the instrument is suspended from the top portion of the tubular frame by the suspension frame, the attachment state of the instrument is likely to be stable.

Japanese Patent No. 7002715

In the metal frame structure according to the above-mentioned related art, the cylindrical frame itself is a relatively large structure having a sufficient height so that the suspension frame can be attached, and the assembly of the metal frame structure is also a large-scale work. Sometimes.

A primary object of the present disclosure is to provide a metal frame structure that is easy to improve assemblability.

A metal frame structure according to an aspect of the present disclosure includes a metal tubular frame and a tubular support frame. The support frame protrudes upward from a portion of the tubular frame along a horizontal plane when the tubular frame is installed, and supports an object to be supported. The tubular frame has a fixing portion to which the lower end of the support frame is fixed. The fixing portion is formed with a through hole through which the support frame passes so that the support frame is inserted upward from below.

A metal frame structure according to an aspect of the present disclosure includes a metal tubular frame and fittings. The tubular frame is configured by connecting a plurality of tubular bodies including a first tubular body and a second tubular body. The fitting joins the first cylindrical body and the second cylindrical body. The first cylindrical body and the second cylindrical body have a first opening hole formed in one side surface of the first cylindrical body along the longitudinal direction, and a longitudinal direction of the second cylindrical body. They are combined in a state in which the second openings formed in the one end face face each other. The fitting includes a first piece fixed around the first opening hole of the first cylindrical body within the first cylindrical body, and a first piece fixed to the periphery of the first opening of the first cylindrical body within the first cylindrical body, and a first piece fixed to the second cylindrical body within the second cylindrical body. and a second piece secured around the second aperture.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide a metal frame structure that is mainly easy to improve assemblability.

FIG. 1 is a schematic perspective view of a metal frame structure according to Embodiment 1. FIG. FIG. 2 is a schematic perspective view showing an example of use of the same metal frame structure. FIG. 3 is a schematic exploded perspective view of the same metal frame structure. FIG. 4 is a schematic perspective view of the same metal frame structure with the top plate and the like removed. FIG. 5 is a schematic perspective view of the same metal frame structure with the top plate and the like removed, viewed obliquely from below. FIG. 6A is a schematic exploded perspective view showing a main part of the same metal frame structure; FIG. 6B is a schematic exploded perspective view showing a main part of the same metal frame structure as seen from diagonally below. FIG. 7A is a schematic perspective view showing a main part of the same metal frame structure; FIG. 7B is a schematic perspective view showing a main part of the metal frame structure same as the above, seen from diagonally below. FIG. 8 is a schematic exploded perspective view showing a main part of the metal frame structure as seen from obliquely below. FIG. 9 is a schematic perspective view showing a main part of the metal frame structure as seen from diagonally below. FIG. 10 is a schematic cross-sectional view showing a main part of the same metal frame structure. 11 is a schematic perspective view of a metal frame structure according to Embodiment 2. FIG. FIG. 12 is a schematic perspective view of the same metal frame structure as seen obliquely from below. FIG. 13 is a schematic exploded perspective view of the same metal frame structure. 14 is a schematic perspective view of a metal frame structure according to Embodiment 3. FIG. FIG. 15 is a schematic perspective view of the same metal frame structure as seen obliquely from below.

(Embodiment 1)
[1] Overview First, an overview of the metal frame structure 10 according to the present embodiment will be described with reference to FIGS. 1 to 3 and 8. FIG.

The metal frame structure 10 is, for example, a work table used in a factory, a table or bench used in a restaurant or a coworking space, or a shelf or bed used in a house. It consists of frame 1. In other words, the metal frame structure 10 constitutes a structure as furniture (including furniture) such as a workbench, a table, a bench, a shelf, or a bed with sufficient strength secured by the metal cylindrical frame 1. do. A structure composed of the metal frame structure 10 is used in a state of being installed on an installation surface S1 such as the floor surface of a building or the ground, for example.

In the metal frame structure 10 , the tubular frame 1 is constructed by connecting a plurality of tubular bodies including a first tubular body 11 and a second tubular body 12 . That is, one tubular frame 1 is configured by connecting a plurality of tubular bodies including the first tubular body 11 and the second tubular body 12 . Here, various shapes of the tubular frame 1 can be configured depending on how to combine the plurality of tubular bodies constituting the tubular frame 1, the shape of the tubular bodies to be used, and the like. In other words, by appropriately combining a plurality of cylinders selected from various cylinders, the metal frame structure 10 can have any shape according to the application. 10 is highly expandable. In particular, the metal frame structure 10 according to the present embodiment is configured to be able to attach various members such as the top plate 71 of the workbench using attachments such as brackets 61 (see FIG. 4). Various structures can be realized.

By the way, even if expandability is ensured, for example, when supporting a device such as a display as in the related art, the device may be attached to a suspension frame projecting downward from the top portion of the tubular frame 1. In this configuration, the tubular frame 1 itself becomes a relatively large structure having a sufficient height. Therefore, assembling the metal frame structure 10 may also be a large-scale work. On the other hand, the metal frame structure 10 according to the present embodiment realizes the metal frame structure 10 that mainly facilitates the improvement of the assemblability due to the following configuration.

That is, as shown in FIGS. 2 and 3, the metal frame structure 10 according to the present embodiment includes a metal tubular frame 1 and a tubular support frame 2 . The support frame 2 projects upward from a portion of the tubular frame 1 along the horizontal plane when the tubular frame 1 is installed, and supports the object 73 to be supported. The tubular frame 1 has a fixing portion 100 to which the lower end of the support frame 2 is fixed. A through hole 101 through which the support frame 2 penetrates is formed in the fixed portion 100 so that the support frame 2 is inserted upward from below.

According to this configuration, a device (such as a display) as the object to be supported 73 can be mounted on the tubular frame 1 by supporting it with the support frame 2 . Here, the support frame 2 projects upward from a portion along the horizontal plane of the tubular frame 1 with its lower end fixed to the fixing portion 100 of the tubular frame 1 . The height of the tubular frame 1 itself can be kept low compared to a configuration in which the instrument is attached to a suspension frame protruding downward from the top portion. Therefore, the metal frame structure 10 can be embodied as a relatively small structure, and the assemblability of the metal frame structure 10 can be easily improved. Further, the fixing portion 100 to which the support frame 2 is fixed is provided with a through hole 101 through which the support frame 2 passes so that the support frame 2 is inserted upward from below. Inclination of the support frame 2 is suppressed by the inner peripheral edge of 101 , and the support frame 2 is stably fixed to the fixing portion 100 . As a result, the mounting state of the object to be supported 73 (equipment) supported by the support frame 2 tends to be stable.

Moreover, as shown in FIGS. 3 and 8 , the metal frame structure 10 according to the present embodiment includes a metal cylindrical frame 1 and fittings 3 . The tubular frame 1 is configured by connecting a plurality of tubular bodies including a first tubular body 11 and a second tubular body 12 . The fitting 3 joins the first cylindrical body 11 and the second cylindrical body 12 . The first cylindrical body 11 and the second cylindrical body 12 are arranged in a first opening hole 111 formed on one side surface of the first cylindrical body 11 along the longitudinal direction thereof, and the second cylindrical body 12 extending in the longitudinal direction thereof. are joined with the second openings 121 formed in one end face of the two facing each other. The fitting 3 comprises an angle having a first piece 31 (see FIG. 8) and a second piece 32 (see FIG. 8). The first piece 31 is fixed inside the first cylindrical body 11 around the first opening hole 111 of the first cylindrical body 11 . The second piece 32 is fixed inside the second cylinder 12 around the second opening 121 of the second cylinder 12 .

According to this configuration, the first cylindrical body 11 and the second cylindrical body 12 are joined together so that one end surface of the second cylindrical body 12 abuts against one side surface of the first cylindrical body 11 . . Here, the angle material (L-shaped fitting) of the fitting 3 fixes the first piece 31 around the first opening hole 111 of the first tubular body 11 inside the first tubular body 11, and the second The first and second cylinders 11 and 12 are joined together by fixing the second piece 32 within the cylinder 12 around the second opening 121 of the second cylinder 12 . Therefore, for example, if the first piece 31 is fixed to the first cylindrical body 11 in advance, the second piece 32 protruding from the first opening hole 111 of the first cylindrical body 11 can be attached to the second cylindrical body 12 . The first cylindrical body 11 and the second cylindrical body 12 can be combined only by fixing them to each other. Alternatively, if the second piece 32 is fixed to the second cylinder 12 in advance, the first piece 31 protruding from the second opening 121 of the second cylinder 12 is fixed to the first cylinder 11 . The first cylindrical body 11 and the second cylindrical body 12 can be joined only by doing so. Therefore, it is easy to improve the assemblability of the metal frame structure 10 .

[2] Definition In the present disclosure, the vertical direction when the metal frame structure 10 is installed on the installation surface S1 (the state shown in FIG. 1) is defined as the height direction D1. Further, in this embodiment, for convenience of explanation, the front-rear direction D2 and the left-right direction D3 are defined with reference to the direction viewed from the person H1 (see FIG. 2) standing in front of the metal frame structure 10 in the installed state. That is, the front-rear direction D2 corresponds to the depth direction of the metal frame structure 10, and the left-right direction D3 corresponds to the width direction of the metal frame structure 10. As shown in FIG. 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 fixtures (including furniture) composed of the cylindrical frame 1 of the metal frame structure 10, and includes a workbench, table, bench, shelf, bed, or the like. include. The structure may also be a private room such as a booth, prefabricated shed or storeroom. In this embodiment, as an example, a case where a structure composed of the cylindrical frame 1 of the metal frame structure 10 is a workbench used in a factory will be described, but the use of the structure is not limited.

The term “cylindrical body” as used in the present disclosure means a cylindrical shape with a rectangular cross section, a cylindrical shape with a circular cross section, or a cylindrical shape with a polygonal cross section (including triangular, pentagonal, hexagonal, etc.). means a member. In particular, the plurality of tubular bodies (including the first tubular body 11 and the second tubular body 12) forming the metallic tubular frame 1 are all made of metallic pipe materials (metal pipes). In this embodiment, as an example, a case where each of the plurality of cylinders has a square tube shape with a rectangular cross section will be described, but the shape of the cylinders is not limited to a square tube shape.

In the present disclosure, "metallic" includes members made of various metals, such as stainless steel, iron, aluminum, carbon steel, alloy steel, and copper. Further, the “metal” tubular frame 1 is not limited to being made of one kind of metal, but may be made up of, for example, a plurality of tubular bodies made of different kinds of metal. Different metals may form a multi-layer structure. Furthermore, the cylindrical frame 1 may have at least a metallic skeleton, and may have a non-metallic coating, plating layer, coating film, or the like formed on its surface, for example. Each part of the metal frame structure 10 has its material, thickness, etc. set so as to maintain sufficient strength required for each part.

The “supported object” in the present disclosure is a device that is supported by the support frame 2 or the like and attached to the metal frame structure 10, such as a display (monitor), a microphone, a speaker, a camera, or a lighting device. Including various instruments. Further, the object to be supported 73 is not limited to one instrument, and may be multiple instruments of the same type or different types. Furthermore, the object to be supported 73 may be an object other than an instrument, such as a shelf, box, or stand, for example. In this embodiment, as an example, a case where the support object 73 is a display will be described, but it is not intended to limit the support object 73 to a display.

"Parallel" in the present disclosure means that two straight lines on one plane do not intersect no matter how far they are extended, that is, the angle between the two is strictly 0 degrees (or 180 degrees). , means that the angle between the two is within an error range of several degrees (for example, less than 10 degrees) from 0 degree. Similarly, the term “perpendicular” in the present disclosure means that the angle between the two is exactly 90 degrees, and the angle between the two is about 90 degrees (for example, less than 10 degrees). It means that the relationship is within the error range of

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

[3.1] Overall Configuration As shown in FIGS. , is equipped with The support frame 2 supports the support object 73 such as the display as described above, but the support object 73 is not included in the metal frame structure 10 . In FIG. 1, the supporting object 73 (display) supported by the supporting frame 2 is indicated by an imaginary line (chain double-dashed line).

The tubular frame 1 has one first tubular body 11 and a plurality of (here, four) second tubular bodies 12 . The tubular frame 1 is configured by connecting a plurality of tubular bodies including a first tubular body 11 and (a plurality of) second tubular bodies 12 . Here, the plurality of tubular bodies (including the first tubular body 11 and the second tubular body 12) that constitute the tubular frame 1 have internal spaces Sp1 (see FIG. 5) that are continuously connected (communication ), they are coupled using the coupling fittings 3 .

Specifically, the first tubular body 11 includes a pair of side frames 13 and a back frame 14 . Each side frame 13 extends in one direction (the front-rear direction D2 in this embodiment), and the back frame 14 connects one ends (rear ends in this embodiment) of the pair of side frames 13 to each other. That is, when viewed from the person H1 standing in front of the metal frame structure 10, the rear end portions (back end portions) of the pair of side frames 13 are attached to both longitudinal end portions of the back frame 14 having a length along the left-right direction D3. By connecting the pair of side frames 13 to each other and extending forward (front), the entire first cylindrical body 11 forms a substantially C shape that is open forward. In other words, the first cylindrical body 11 has a substantially C-shaped "length" that opens toward the front when viewed from above.

In this way, the pair of side frames 13 and back frame 14 are connected along the "length" of the first cylindrical body 11, and one cylindrical frame 1 (first cylindrical body 11) is connected. configure. Therefore, the internal space Sp1 of the first cylindrical body 11 forms one space that communicates from the pair of side frames 13 to the back frame 14 . Joining of the pair of side frames 13 and back frame 14 is achieved by, for example, welding or adhesion, or a combination thereof.

Here, caps 52 are attached to both ends of the first cylindrical body 11, that is, to the other longitudinal ends (front ends in this embodiment) of the side frames 13, respectively. As a result, both ends of the first cylindrical body 11 are closed with the pair of caps 52 . As an example, the cap 52 is attached to the first cylindrical body 11 in a detachable manner. FIG. 4 and the like illustrate a state in which the cap 52 is removed.

A plurality of (here, four) second cylinders 12 protrude downward from the lower surface of the first cylinder 11 . That is, the first cylinder 11 is connected to one longitudinal end (upper end in this embodiment) of the second cylinder 12 having a length along the height direction D1. Specifically, one second cylinder 12 is coupled to each end of each side frame 13 of the first cylinder 11 in the longitudinal direction (the front-rear direction D2).

Here, a plurality of (here, four) second cylinders 12 are connected to the first cylinder 11 so as to communicate the internal space Sp1 of the tubular frame 1 . Specifically, at both ends of the side frame 13 of the first cylinder 11 in the longitudinal direction (the front-rear direction D2), a first opening hole 111 is formed on one side surface (lower surface in this embodiment). there is On the other hand, a second opening hole 121 is formed in one end face (upper end face in this embodiment) of each second cylindrical body 12 in the longitudinal direction (height direction D1). Each second cylinder 12 is coupled to the first cylinder 11 (side frame 13) with the second opening 121 abutting against the first opening 111 of the first cylinder 11. be. Thereby, the internal space Sp1 of the first cylindrical body 11 and the internal space Sp1 of the second cylindrical body 12 communicate with each other through the first opening hole 111 and the second opening hole 121 that face each other.

Further, in the present embodiment, the plurality of tubular bodies (the first tubular body 11 and the second tubular body 12) forming the tubular frame 1 are all hollow rectangular tubular shapes with a rectangular cross section. More specifically, among the plurality of cylinders, the cross-sectional shape of the second cylinder 12 is square. Of the first tubular body 11, the side frame 13 has a rectangular cross-sectional shape with long sides along the height direction D1, and the back frame 14 has a square cross-sectional shape. Here, the short side (dimension in the left-right direction D3) of the cross section (rectangular) of the side frame 13 is approximately the same size as one side of the cross section (square) of the second tubular body 12 . On the other hand, the long side (dimension in the height direction D1) of the cross section (rectangular) of the side frame 13 is substantially the same size as one side of the cross section (square) of the back frame 14 . That is, the cross-sectional shape of the back frame 14 is one size larger than the cross-sectional shape of the second tubular body 12 . However, the plurality of tubular bodies that constitute the tubular frame 1 are not limited to the square tubular shape, and may be, for example, a hollow cylindrical shape having a circular cross section.

The support frame 2 is a member that protrudes upward from the upper surface of the cylindrical frame 1 and supports a support object 73 (a display in this embodiment). The support frame 2 has a length along the height direction D1. That is, the support frame 2 is fixed to the tubular frame 1 in a self-supporting posture. By supporting the object 73 to be supported by such a support frame 2, for example, the space on the top plate 71 can be effectively used.

Specifically, the support frame 2 supports an instrument support 74 (see FIG. 2) to which a display as a support object 73 can be attached. A support object 73 is detachably attached to the instrument support 74 , whereby the support object 73 is indirectly supported with respect to the support frame 2 . In this embodiment, as an example, the support frame 2 has a hollow cylindrical shape with a circular cross section. The instrument support 74 can be attached to the support frame 2 at a variable position along the longitudinal direction of the support frame 2 (height direction D1). Therefore, the mounting height of the object to be supported 73 with respect to the tubular frame 1 can be adjusted. However, the support frame 2 is not limited to a cylindrical shape, and may be, for example, a hollow square tube having a rectangular cross section.

The support frame 2 is open at least at one end face in the longitudinal direction (height direction D1), and the wiring connected to the object to be supported 73 can be led through the one end face. In this embodiment, since both longitudinal end surfaces of the support frame 2 are open, for example, wiring drawn from the lower end surface of the support frame 2 is drawn from the upper end surface of the support frame 2 and connected to the object to be supported 73 . It is possible.

The joint fitting 3 is a member that joins the first tubular body 11 and the second tubular body 12 . The fitting 3 includes an angle member having a first piece 31 and a second piece 32 as described above, the first piece 31 and the second piece 32 forming the first tube 11 and the second tube, respectively. By being fixed to the body 12, the first cylinder 11 and the second cylinder 12 are mechanically connected. In this embodiment, as an example, two fittings 3 (angle members) are used for one second cylindrical body 12 . Eight fittings 3 (angles) are used to connect to the .

In addition, the metal frame structure 10 includes, for example, rivets, screws (including bolts), washers, nuts, etc. that connect the first cylindrical body 11 or the second cylindrical body 12 and the fittings 3, Fasteners are also provided for joining the components of the metal frame structure 10 together. However, these fasteners are merely one means for fastening the component parts together, and other means can be substituted for them. omitted.

In the metal frame structure 10 according to the present embodiment, the tubular frame 1 is roughly divided into a leg portion erected on the installation surface S1 and a top portion supported by the leg portion, depending on the shape thereof. . The leg has a length along the height direction D1 perpendicular 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 this embodiment, as an example, the second tubular body 12 among the plurality of tubular bodies constituting the tubular frame 1 is a "leg portion", and the first tubular body 11 (a pair of side frames 13 and a back frame). 14) is the "top part".

Various wiring devices 72 such as an outlet, a switch, a USB outlet, a terminal block, or a wire connection hole can be attached to the tubular frame 1, for example. Specifically, the tubular frame 1 is formed with at least one device attachment hole 15 , and the wiring device 72 can be attached to the device attachment hole 15 . In this embodiment, as an example, the tubular frame 1 is provided with a first tubular body 11 as a top portion and a plurality (for example, three) of instrument mounting holes 15 . As shown in FIG. 4, the instrument mounting holes 15 are formed in the upper surface of one side frame 13 and the upper and lower surfaces of the back frame 14, respectively. In particular, the device mounting hole 15 to which the wiring device 72 is not attached may be covered with a cover, or may be used as a work hole through which wiring is passed.

In the metal frame structure 10 according to the present embodiment, the internal space Sp1 of the tubular frame 1 includes a wiring space for wiring. In other words, since the internal space Sp1 of the tubular frame 1 communicates with the plurality of tubular bodies (including the first tubular body 11 and the second tubular body 12) constituting the tubular frame 1, this internal space Wiring can be passed through Sp1. As a result, wiring such as a power supply cable or a communication line connected to the wiring device 72 or the like can be passed along the tubular frame 1 while suppressing exposure of the wiring around the metal frame structure 10 .

The metal frame structure 10 is configured such that various members such as a top plate 71 of a workbench and a seat surface of a bench can be attached to the tubular frame 1 . Members such as the top plate 71 are detachably attached to the metal frame structure 10 . Thereby, it is possible to easily give the desired extension function to the metal frame structure 10 . Although FIG. 2 shows a work table used by the person H1 in a standing posture as an example, the work table is not limited to this mode. may

In this embodiment, the top plate 71 of the workbench is fixed to the tubular frame 1 with a bracket 61 attached to the top portion (first tubular body 11) of the tubular frame 1. As shown in FIG. Specifically, the bracket 61 is made of an angle member attached to the facing surfaces (the inner surfaces in the left-right direction D3) of the pair of side frames 13 of the first cylindrical body 11, respectively. The bracket 61 has a length along the front-rear direction D<b>2 and is attached to one side frame 13 , so that a total of two brackets 61 are attached to the metal frame structure 10 . Therefore, the top plate 71 is installed so as to bridge between the pair of side frames 13 spaced apart in the left-right direction D3. It is possible.

Here, the shape and size of the top plate 71 in plan view are set according to the space surrounded by the pair of side frames 13 and back frame 14 . Thereby, the tubular frame 1 can support the top plate 71 in the space surrounded by the pair of side frames 13 and back frame 14 . That is, the top plate 71 is surrounded by the tubular frame 1 from three sides in plan view, and the tubular frame 1 can firmly support the top plate 71 . Moreover, when the wiring device 72 is attached to the top portion (first cylindrical body 11 ) of the tubular frame 1 , the wiring device 72 is arranged around the top plate 71 . is easy to use.

Furthermore, the upper surface of the bracket 61 is arranged at a position lower than the upper surface of the first cylindrical body 11 . In other words, there is a step between the upper surface of the bracket 61 and the upper surface of the first cylindrical body 11 such that the bracket 61 side is lowered by one step. Here, the thickness of the top plate 71 is set according to the step between the upper surface of the bracket 61 and the upper surface of the first cylindrical body 11 . Accordingly, when the top plate 71 is attached between the pair of side frames 13, the top surface of the first cylindrical body 11 and the top surface of the top plate 71 are substantially flush with each other. Therefore, for example, the space on the cylindrical frame 1 positioned around the top plate 71 can be used as a working space that is continuous with the top plate 71 .

The back panel portion 4 is attached across a pair of leg portions (second cylinders 12) spaced apart in the left-right direction D3. In the present embodiment, of the four second cylinders 12, the two second cylinders 12 located on the rear side (back side when viewed from the person H1 standing in front of the metal frame structure 10) are A back panel section 4 is attached. Here, both ends of the back panel portion 4 in the longitudinal direction (left-right direction D3) are joined to the second cylindrical body 12, respectively, so that the back panel portion 4 becomes a pair of legs (second cylindrical body). It is mounted between the bodies 12). The connection between the back panel portion 4 and the second cylindrical body 12 is realized by, for example, screwing, welding, adhesion, or a combination thereof.

In this embodiment, as an example, the back panel portion 4 is formed in a thin box shape having a rectangular shape with long sides along the left-right direction D3 when viewed from the front and a thickness in the front-rear direction D2. Specifically, the back panel section 4 has a rear cover 41 and a front cover 42 . The front cover 42 is combined with the rear cover 41 in the front-rear direction D2 while securing a space therebetween. Thereby, the back panel section 4 can accommodate a device such as a power tap (table tap) between the rear cover 41 and the front cover 42 . A wire passage hole 43 (see FIG. 5) is formed in the lower surface of the back panel portion 4 for passing wires connected to the equipment housed in the back panel portion 4 .

By providing the back panel portion 4, the metal frame structure 10 can secure a space for housing a device such as a power tap (table tap). Moreover, the back panel part 4 is attached between the pair of legs (the second tubular body 12), so that it also functions as a brace, thereby improving the strength and stability of the tubular frame 1. can be done. Furthermore, in the present embodiment, the back panel portion 4 is attached to the leg portion (second cylindrical body 12) of the tubular frame 1 on the rear side. As a result, when the metal frame structure 10 is installed with the back surface of the metal frame structure 10 close to a wall or the like, the back panel portion 4 is positioned near the wall, so that the metal frame structure 10 (workbench) can be It is hard to get in the way of the user H1.

The base portion 51 is attached to the lower end portion of the leg (second cylinder 12) of the tubular frame 1, and supports the leg (second cylinder 12) when the metal frame structure 10 is installed. Thus, the leg portion (second cylindrical body 12) can be erected on the installation surface S1. Specifically, the base portion 51 has a length along the front-rear direction D2 so as to be perpendicular to the second cylindrical body 12 . In this embodiment, as an example, the base portion 51 is in the shape of a hollow rectangular tube with a rectangular cross section. The base portion 51 has a projecting base 511 (see FIG. 3) made of an angle member (L-shaped metal fitting) protruding upward from its upper surface, and the projecting base 511 is inserted into the lower end portion of the second cylindrical body 12 . It is attached to the second cylinder 12 by being joined to the second cylinder 12 . Joining of the projecting base 511 and the second cylindrical body 12 is achieved by, for example, screwing, welding, adhesion, or a combination thereof.

Here, one base portion 51 has a pair of projecting bases 511 spaced apart in the front-rear direction D2. A pair of projecting bases 511 are joined to a pair of leg portions (second cylindrical body 12), respectively. That is, since one base portion 51 is provided for each pair of second cylinders 12 spaced apart in the front-rear direction D2, a total of two base portions 51 are attached to the two pairs of second cylinders 12. become. As a result, the four legs (the second cylindrical body 12) are supported by the base 51 so as to extend upward from the two bases 51, thereby standing on the installation surface S1. .

In addition, the metal frame structure 10 according to the present embodiment is provided on the lower surface of the base portion 51 as a height adjustment mechanism for adjusting the height of the leg portion (second cylindrical body 12) from the installation surface S1. An adjuster 512 is provided. The adjuster 512 is configured to be able to adjust the amount of protrusion from the lower surface of the base portion 51 . Therefore, by operating the adjuster 512, the position of the base portion 51 in the height direction D1 with respect to the installation surface S1 can be adjusted, thereby realizing a height adjustment mechanism. By providing such a height adjustment mechanism, for example, even if the installation surface S1 is inclined or distorted, the metal frame structure 10 can be installed stably.

[3.2] Fixing Structure of Supporting Frame Next, the fixing structure of the supporting frame 2 to the cylindrical frame 1 of the metal frame structure 10 will be described in more detail with reference to FIGS. 6A to 7B. 6A and 6B show a state in the process of attaching the support frame 2 to the tubular frame 1, and FIGS. 7A and 7B show a state in which the support frame 2 is attached to the tubular frame 1. FIG. 6A and 7A are enlarged schematic diagrams of the region Z1 in FIG. 4 when the metal frame structure 10 is viewed obliquely from above, and FIGS. Fig. 6 is a schematic diagram showing an enlarged view of the area Z1 of Fig. 5;

In this embodiment, the tubular support frame 2 that supports the object to be supported 73 protrudes upward from a portion of the tubular frame 1 along the horizontal plane when the tubular frame 1 is installed. In this embodiment, as an example, the support frame 2 protrudes upward from a portion (upper surface) of the first tubular body 11 that faces upward when the tubular frame 1 is installed. Therefore, a fixing portion 100 to which the lower end portion of the support frame 2 is fixed is provided on the first cylindrical body 11 of the cylindrical frame 1 .

A through-hole 101 is formed in the fixed portion 100 so as to penetrate along the height direction D1. The support frame 2 penetrates through the through hole 101 of the fixed portion 100 in such a manner that it is inserted upward from below. In other words, the support frame 2 is fixed to the fixing portion 100 at its lower end while penetrating through the through hole 101 formed in a part of the tubular frame 1 (first tubular body 11). It is erected on the shaped frame 1.

More specifically, the support frame 2 has a frame body 21 and a flange portion 22 . The frame main body 21 extends along the vertical direction (height direction D1) in the installed state of the tubular frame 1 . The flange portion 22 protrudes outward from the outer peripheral surface of the lower end portion of the frame body 21 . Here, the frame main body 21 has a cylindrical tubular shape, and the flange portion 22 is formed in a rectangular plate shape having a long side along the left-right direction D3 in a plan view. In this embodiment, the frame main body 21 and the flange portion 22 are integrated. The joint between the frame main body 21 and the flange portion 22 is achieved by, for example, welding or adhesion, or a combination thereof.

The opening surface of the through hole 101 is larger than the outer diameter of the frame main body 21 and smaller than the outer shape of the flange portion 22 in plan view. Therefore, of the support frame 2 , the frame main body 21 can pass through the through hole 101 , but the flange portion 22 cannot pass through the through hole 101 . Furthermore, an introduction hole 102 that is slightly larger than the flange portion 22 is formed in a portion (lower surface) of the tubular frame 1 (first tubular body 11 ) that faces the fixing portion 100 . Therefore, when the support frame 2 is inserted upward from the introduction hole 102 , the frame body 21 protrudes upward from the fixed portion 100 through the through hole 101 , and the flange portion 22 faces the periphery of the through hole 101 in the fixed portion 100 . do.

Here, a plurality of (here, four) fixing holes 103 are formed around the through hole 101 in the fixing portion 100 . On the other hand, a plurality of (here, four) through holes 23 are formed at positions corresponding to the plurality of fixing holes 103 in the flange portion 22 . Therefore, for example, the fixing part 100 and the flange part 22 can be connected by tightening the fixing holes 103 and the through holes 23 together with fasteners such as screws (including bolts), washers and nuts. is possible. In short, in the present embodiment, the flange portion 22 is fixed to the fixing portion 100 in a state in which the flange portion 22 faces the periphery of the through hole 101 on the lower surface of the fixing portion 100 and the frame main body 21 passes through the through hole 101 . be.

According to this configuration, the fixing portion 100 to which the support frame 2 is fixed is provided with the through hole 101 through which the frame body 21 of the support frame 2 passes. 2 is suppressed, and the support frame 2 is stably fixed to the fixing portion 100 . Moreover, since the flange portion 22 is positioned below the fixing portion 100, the flange portion 22 is not positioned on the tubular frame 1, and it is possible to avoid the deterioration of the appearance due to the exposure of the flange portion 22. .

Fasteners for coupling fixed portion 100 and flange portion 22 are preferably removable fasteners such as screws (including bolts) and nuts. Thereby, the support frame 2 is attached to the tubular frame 1 in a detachable manner. However, without being limited to this configuration, the fastener for coupling the fixing portion 100 and the flange portion 22 may be a non-removable fastener such as a rivet.

Further, in this embodiment, the internal space Sp1 of the tubular frame 1 and the internal space Sp2 of the support frame 2 communicate with each other and include a wiring space for passing wiring. That is, since the support frame 2 is fixed to the cylindrical frame 1 while passing through the through hole 101 of the fixing portion 100, the opening of the lower end surface of the support frame 2 is not blocked by the fixing portion 100, and the fixing portion 100 does not block the opening. The internal space Sp2 of the support frame 2 is connected to the internal space Sp1 of the tubular frame 1 (first tubular body 11) through the opening. As a result, wiring such as a power cable or a communication line connected to the supporting object 73 can be passed through while suppressing exposure of the wiring around the metal frame structure 10 .

Furthermore, in the present embodiment, as described above, the tubular frame 1 (first tubular body 11) includes the pair of side frames 13 and the back frame 14, and the fixing portion 100 is attached to the back frame 14. are placed. Specifically, a fixing portion 100 is provided in the central portion of the back frame 14 in the longitudinal direction (horizontal direction D3). Therefore, the support frame 2 is fixed to the back frame 14 having particularly high rigidity among the cylindrical frames 1, and the strength of the fixing structure of the support frame 2 can be improved. Moreover, since the support object 73 supported by the support frame 2 is arranged near the rear end (the end on the far side) when viewed from the person H1 standing in front of the metal frame structure 10, for example, the top plate 71 The top can be used widely.

[3.3] Connection structure between cylinders Next, the connection structure of a plurality of cylinders constituting the tubular frame 1 of the metal frame structure 10 will be described in more detail with reference to Figs. 8 to 10 . do. FIG. 8 shows a state in which the second cylinder 12 is attached to the first cylinder 11, and FIG. 9 shows the second cylinder 12 attached to the first cylinder 11. Indicates status. 8 and 9 are schematic diagrams enlarging the region Z2 in FIG. 5 when the metal frame structure 10 is viewed obliquely from below.

In the present embodiment, the first cylindrical body 11 and a plurality of (here, four) second cylindrical bodies 12 are connected with the fittings 3, thereby forming an integrated cylinder with the internal space Sp1 communicating. It constitutes a shaped frame 1. Here, the first cylindrical body 11 and the second cylindrical body 12 are arranged such that the second cylindrical body 12 is inserted into the first opening hole 111 formed in one side surface of the first cylindrical body 11 along the longitudinal direction. are joined with the second openings 121 formed in one end face in the longitudinal direction facing each other. The fitting 3 includes an angle member (L-shaped fitting) having a first piece 31 and a second piece 32 . The first piece 31 is fixed inside the first cylindrical body 11 around the first opening hole 111 of the first cylindrical body 11 . The second piece 32 is fixed inside the second cylinder 12 around the second opening 121 of the second cylinder 12 .

In this embodiment, as an example, the first opening hole 111 is formed in the “lower surface” as one side surface along the longitudinal direction of the first cylindrical body 11 . On the other hand, the second opening hole 121 is formed in the “upper end surface” as one end surface in the longitudinal direction of the second cylindrical body 12 . Therefore, the first cylindrical body 11 and the second cylindrical body 12 have a first opening hole 111 on the lower surface of the first cylindrical body 11 and a second opening hole 121 on the upper end surface of the second cylindrical body 12 . They are combined in a butted state and joined to the fittings 3 .

More specifically, a plurality (here, four) of first opening holes 111 are provided for one first cylinder 11 so as to correspond to a plurality (here, four) of second cylinders 12 . is provided. Two of the plurality of first opening holes 111 are arranged at corners between the side frame 13 and the back frame 14 , and the remaining two are arranged at the front ends of the side frames 13 respectively. Each of the plurality of first apertures 111 is formed in a square shape that is substantially the same shape as the second aperture 121 in plan view.

In this embodiment, two fittings 3 (angle members) are used for one second cylindrical body 12 as described above. The first piece 31 of each fitting 3 is inserted into the first cylinder 11 through the first opening 111 , and the first piece 31 is coupled to the first cylinder 11 inside the first cylinder 11 . be done. Thereby, the second piece 32 of each fitting 3 protrudes (downward) from the first opening 111 to the outside of the first cylinder 11 . The second piece 32 of each fitting 3 is inserted into the second cylindrical body 12 through the second opening 121 , and the second piece 32 is inserted into the second cylindrical body 12 inside the second cylindrical body 12 . coupled to As a result, the second cylinder 12 is connected to the first cylinder 11 via the fitting 3 .

Here, the two fittings 3 corresponding to one second tubular body 12 are arranged so that the respective second pieces 32 protrude from two different sides of the periphery of the first opening hole 111. 31 is connected to the first barrel 11 . Strictly speaking, in the first opening 111 arranged at the corner between the side frame 13 and the back frame 14, the side (front side) where the side frame 13 extends and the side where the back frame 14 extends. The fittings 3 are attached to two sides including the one on the side (inner side in the left-right direction D3). In the first opening 111 arranged in the side frame 13 , the fittings 3 are attached to two sides facing each other in the longitudinal direction D2 of the side frame 13 .

By the way, the joining between the first piece 31 and the first cylindrical body 11 is achieved by, for example, riveting, screwing, welding or adhesion, or a combination thereof. Similarly, the joining of the second piece 32 and the second cylindrical body 12 is achieved by riveting, screwing, welding or gluing, or a combination thereof, for example. However, in this embodiment, the first piece 31 is non-removably fixed to the first cylinder 11 and the second piece 32 is detachably fixed to the second cylinder 12. be. That is, the first piece 31 and the first cylindrical body 11 are joined by, for example, a non-removable fastener such as a rivet, and the second piece 32 and the second cylindrical body 12 are joined by, for example, , by means of removable fasteners such as screws (bolts and nuts).

As a result, the first cylindrical body 11 and the plurality of (here, eight) fittings 3 can be treated as one member, further improving the ease of assembly. That is, the operator inserts the second piece 32 of the fitting 3 protruding from the first cylindrical body 11 into the second cylindrical body 12 through the second opening hole 121, and inserts the second piece 32 into the second cylindrical body 12. Only by connecting the second piece 32 to the second cylindrical body 12, the first cylindrical body 11 and the second cylindrical body 12 can be connected.

Specifically, each second piece 32 is formed with a plurality of (here, two) screw holes 33 (see FIG. 8). On the other hand, a plurality (here, four) of screw holes 33 are provided around the second opening 121 of the second cylindrical body 12, that is, at positions corresponding to the plurality of screw holes 33 at the upper end of the leg (second cylindrical body 12). A long hole 122 (see FIG. 8) is formed. Therefore, for example, the second piece 32 and the second cylinder 12 are coupled by tightening the long hole 122 and the screw hole 33 together with fasteners such as screws (including bolts) and washers. It is possible.

Further, the elongated hole 122 formed in the upper end portion of the leg portion (second cylindrical body 12) is elongated in the height direction D1 as shown in FIG. Therefore, the position of the fitting 3 (second piece 32) in the height direction D1 with respect to the second cylindrical body 12 can be adjusted. As a result, the position of the first cylinder in the height direction D1 with respect to the second cylinder 12 can be adjusted. Even if the height of 12 slightly deviates, it becomes easy to install the first cylindrical body 11 horizontally.

[3.4] Other Configurations A wiring through hole 16 communicating with the internal space Sp1 of the tubular frame 1 is formed on one side surface of the tubular frame 1 along the longitudinal direction. The wiring through-hole 16 is mainly used by the operator to access the internal space Sp1 during the wiring work of passing the wiring through the tubular frame 1 . A metal frame structure 10 according to the present embodiment has a plurality of wiring through holes 16 at appropriate locations in the tubular frame 1 . By providing such a wiring through-hole 16, the wiring work is facilitated. At least one of the plurality of wiring through-holes 16 may be covered with a cover, or may be used as a wire-through hole for wiring.

In particular, the wiring through hole 16 is located near the connecting portion of the plurality of cylindrical bodies (including the first cylindrical body 11 and the second cylindrical body 12) that constitute the cylindrical frame 1, or between the supporting frame 2 and the cylindrical frame 1. It is preferably located in the vicinity of the joint with the Here, "near the joint" refers to a position close to the joint so that the operator can touch the wiring passing through the joint with fingers or a jig.

Specifically, as shown in FIGS. 4 and 5, in the first cylindrical body 11, wiring through holes 16 are provided near the connecting portions of the side frame 13, the back frame 14, and the second cylindrical body 12, respectively. is provided. The wiring through holes 16 are arranged on the front surfaces of both ends of the back frame 14 in the longitudinal direction (left-right direction D3). Further, a wiring through-hole 16 is also provided in the vicinity of the coupling portion (fixing portion 100 ) with the support frame 2 in the first cylindrical body 11 . The wiring through-holes 16 are arranged on the upper and lower surfaces of the central portion of the back frame 14 in the longitudinal direction (horizontal direction D3).

[4] Modifications Embodiment 1 is merely one of various embodiments of the present disclosure. Embodiment 1 can be modified in various ways according to design and the like, as long as the object of the present disclosure can be achieved. Each drawing described in this disclosure is a schematic drawing, and the ratio of the size and thickness of each component in each drawing does not necessarily reflect the actual dimensional ratio. Modifications of the first embodiment are listed below. Modifications described below can be applied in combination as appropriate.

Various configurations adopted by the metal frame structure 10 are applicable not only to "metal" but also to, for example, carbon fiber reinforced plastic (carbon composite), other resin products, wood, and the like.

Further, the back panel portion 4 is not an essential component of the metal frame structure 10, and can be omitted as appropriate. In particular, when the top plate 71 as described in the first embodiment is attached across the leg portions (the second cylinders 12) spaced apart in the left-right direction D3, even if the back panel portion 4 is omitted, the top plate 71 can be The plate 71 can improve the strength and stability of the tubular frame 1 . Furthermore, in addition to or instead of the back panel portion 4, two diagonally extending bracing members may be provided so as to intersect each other.

Further, the base portion 51 is not an essential component of the metal frame structure 10 and can be omitted as appropriate. For example, if the metal frame structure 10 is not a stationary type but a stationary type, the base portion 51 is omitted. In this case, a fixing member is used in place of the base portion 51, and the fixing member is fixed to the installation surface S1 by, for example, screwing or adhesion, or a combination thereof, so that the leg portion (second cylinder The body 12) is erected on the installation surface S1. In the fixed-position type, the projecting base 511 joined to the lower end of the leg (second cylindrical body 12) is provided on the fixed member instead of the base 51. As shown in FIG. That is, the fixing member has a projecting base 511 made of an L-shaped metal fitting that protrudes upward from its upper surface, and the projecting base 511 inserted into the lower end of the second cylindrical body 12 is attached to the second cylindrical body 12 . It is attached to the second cylindrical body 12 by joining them together.

Further, as the fittings 3 for coupling the first tubular body 11 and the second tubular body 12, it is not essential that two fittings 3 are used for one second tubular body 12. One fitting 3 or three or more fittings 3 may be used for one second tubular body 12 . That is, one second cylindrical body 12 may be connected to the first cylindrical body 11 by one fitting 3 (angle material), or by three or more fittings 3 (angle material). It may be combined with the first cylindrical body 11 . By adjusting the number of fittings 3 (angle members) used for one second cylindrical body 12, the bonding strength of the second cylindrical body 12 to the first cylindrical body 11 can be adjusted.

Furthermore, the arrangement of a plurality of (for example, two) fittings 3 provided for one second cylindrical body 12 is not limited to the configuration described in the first embodiment. For example, when the first openings 111 at the corners between the side frames 13 and the back frame 14 are arranged slightly toward the front, the first openings 111 extend in the front-rear direction, which is the longitudinal direction of the side frames 13 . The fittings 3 may be attached to two sides facing D2. In this case, the second tubular body 12 attached to the corner between the side frame 13 and the back frame 14 is arranged forward of the rear end of the side frame 13 . By adjusting the arrangement of a plurality of fittings 3 provided for one second cylindrical body 12, the strength of connection of the second cylindrical body 12 to the first cylindrical body 11 can be adjusted.

(Embodiment 2)
As shown in FIGS. 11 to 13, the metal frame structure 10A according to the present embodiment has a substantially C-shaped (arch-shaped) shape in which the cylindrical frame 1 is open downward. is different from the metal frame structure 10 according to In the following, configurations similar to those of the first embodiment are denoted by common reference numerals, and descriptions thereof are omitted as appropriate.

In this embodiment, the configuration of the first cylindrical body 11 is significantly different from that of the first embodiment. The first tubular body 11 has a pair of side frames 13 and a back frame 14 , a plurality of (here, two) vertical frames 17 and one upper frame 18 . The plurality of vertical frames 17 and upper frame 18 are connected along the “length” of the first cylindrical body 11 to form one first cylindrical body 11 . Specifically, the vertical frames 17 are coupled to both longitudinal ends of the upper frame 18 having a length along the left-right direction D3, and the vertical frames 17 extend downward to form the first cylindrical body 11. is a substantially C-shaped (arch-shaped) opening downward when viewed from the front.

The upper end of each vertical frame 17 has a curved shape when viewed from the front, and the tip of the vertical frame 17 is joined to the upper frame 18 by a joining structure described below. That is, the vertical frame 17 and the upper frame 18 are connected by the connecting plate 19 along the length so as to communicate the internal space Sp1. As shown in FIG. 13 , the coupling plate 19 is a rectangular plate-shaped member, a portion of which is inserted into the upper frame 18 and a portion of which is fixed to the upper frame 18 . A portion of the coupling plate 19 protruding from the upper frame 18 is inserted into the vertical frame 17 and fixed to the vertical frame 17 . Thereby, the connecting plate 19 connects the vertical frame 17 and the upper frame 18 in the internal space Sp1.

In this embodiment, the support frame 2 is attached so as to be suspended from the upper frame 18 of the first cylindrical body 11 . The upper frame 18 is configured such that the support frame 2 can be attached at a plurality of locations (here, three locations) in the longitudinal direction. 11 and 12 show an example in which two support frames 2 are attached to the upper frame 18 to support two objects 73 to be supported.

By the way, the vertical frame 17 having a length along the height direction D1 has a first opening hole 111 formed in the central portion in the longitudinal direction. The side frames 13 and the back frame 14 are combined with the vertical frame 17 so that the second openings 121 formed in one end face in the longitudinal direction of each frame abut against the first openings 111 . Here, the fitting 3 has its first piece 31 (see FIG. 8) fixed to the vertical frame 17 so that the second piece 32 (see FIG. 8) protrudes from the first opening 111 . Then, the second piece 32 of the fitting 3 is inserted through the second opening 121 and fixed to the side frame 13 and back frame 14 inside the side frame 13 and back frame 14 . As a result, the side frames 13 and the back frame 14 are joined to the vertical frames 17 by the joint fittings 3 . That is, the side frames 13 and the back frame 14 correspond to the "second cylinder", and the vertical frame 17 corresponds to the "first cylinder".

In this configuration, portions of the vertical frame 17 protruding downward from the side frames 13 and the back frame 14 function as legs in place of the second cylindrical body 12 . Therefore, in this embodiment, there are only two second cylinders 12 that function as legs.

Further, in this embodiment, a plurality of wiring through holes 16 are provided on the rear surfaces of the vertical frame 17 and the upper frame 18 . This facilitates the wiring work of passing the wiring through the vertical frame 17 and the upper frame 18 .

Further, in this embodiment, the tubular frame 1 is configured by connecting a plurality of tubular bodies. Here, at least one cylinder among the plurality of cylinders may be reversed in plan view and combined. As an example, by making the back frame 14 reversible in the left-right direction D3, it is possible to move the wiring device 72 on the left side of the central portion in the longitudinal direction (left-right direction D3) of the back frame 14 to the right side of the central portion. can. According to such a configuration, the degree of freedom in assembly is increased, and customization is possible according to user's usability.

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

(Embodiment 3)
As shown in FIGS. 14 and 15, the metal frame structure 10B according to this embodiment differs from the metal frame structure 10 according to Embodiment 1 in that it adopts a symmetrical configuration in the front-rear direction D2. . In the following, configurations similar to those of the first embodiment are denoted by common reference numerals, and descriptions thereof are omitted as appropriate.

In this metal frame structure 10B, the top plate 71 of the workbench can be used from both the front and rear directions D2. Therefore, for example, a plurality of persons H1 (workers) can use the metal frame structure 10 at the same time.

Specifically, in the metal frame structure 10B, a pair of side frames 13 extend in the front-rear direction D2, and the longitudinal central portions of the pair of side frames 13 are connected to each other by a back frame 14. . Thereby, the first cylindrical body 11 has a substantially H-shaped shape that is open on both sides in the front-rear direction D2 in a plan view. In this embodiment, the top plate 71 can be attached to both sides of the back frame 14 in the front-rear direction D2, so two top plates 71 can be attached.

The second cylindrical body 12 as a leg portion is provided at four locations at both ends in the longitudinal direction (front-rear direction D2) of each side frame 13, and at the central portion in the longitudinal direction (left-right direction D3) of the back frame 14, for a total of five. installed in place. That is, the tubular frame 1 has five second tubular bodies 12 .

The metal frame structure 10B further includes a pair of reinforcing frames 75 that are arranged parallel to the back frame 14 and connect the longitudinal ends of the pair of side frames 13 to each other. In addition, the metal frame structure 10B includes a pair of reinforcing frames 76 arranged parallel to the side frames 13 and connecting the longitudinal central portions of the pair of reinforcing frames 75 to the longitudinal central portion of the back frame 14, respectively. Prepare more. By providing these reinforcing frames 75 and 76, even when the top plate 71 is relatively large, sufficient load-bearing performance can be achieved.

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

[Additional remarks of the invention]
An outline of the invention extracted from the above-described embodiments will be added below. It should be noted that each configuration and each processing function described in the appendix below can be selected and combined arbitrarily.

<Appendix 1>
a metal tubular frame;
a cylindrical support frame that projects upward from a portion of the cylindrical frame along a horizontal plane in the installed state of the cylindrical frame and supports an object to be supported;
The tubular frame has a fixing portion to which the lower end of the support frame is fixed,
The fixed portion is formed with a through hole through which the support frame passes in such a manner that the support frame is inserted upward from below.
Metal frame structure.

<Appendix 2>
The support frame has a frame main body that extends in the vertical direction when the tubular frame is installed, and a flange portion that protrudes outward from the outer peripheral surface of the lower end portion of the frame main body,
The flange portion is fixed to the fixing portion in a state in which the flange portion faces around the through hole in the lower surface of the fixing portion, and the frame body passes through the through hole.
A metal frame structure according to Appendix 1.

<Appendix 3>
The inner space of the tubular frame and the inner space of the support frame communicate with each other, and include a wiring space for passing wiring,
A metal frame structure according to appendix 1 or 2.

<Appendix 4>
The tubular frame is configured by connecting a plurality of tubular bodies including a first tubular body and a second tubular body,
The first cylindrical body and the second cylindrical body have a first opening hole formed in one side surface of the first cylindrical body along the longitudinal direction, and a longitudinal direction of the second cylindrical body. joined with the second openings formed in one end faces facing each other,
A fitting that joins the first cylindrical body and the second cylindrical body includes a first piece fixed around the first opening hole of the first cylindrical body in the first cylindrical body. and a second piece fixed within the second barrel around the second opening of the second barrel,
A metal frame structure according to any one of Appendices 1 to 3.

<Appendix 5>
the first piece is non-removably fixed to the first barrel;
the second piece is removably secured to the second barrel;
The metal frame structure according to appendix 4.

<Appendix 6>
The cylindrical frame includes a pair of side frames extending in one direction and a back frame connecting one end portions of the pair of side frames. can support
The fixed part is arranged on the back frame,
A metal frame structure according to any one of Appendices 1 to 5.

<Appendix 7>
A wiring through-hole leading to an internal space of the tubular frame is formed on one side surface of the tubular frame along the longitudinal direction,
A metal frame structure according to any one of Appendices 1 to 6.

Reference Signs List 1 tubular frame 2 support frame 3 fitting 10, 10A, 10B metal frame structure 11 first tubular body 12 second tubular body 13 side frame (second tubular body)
14 back frame (second cylinder)
16 Wiring through hole 17 Vertical frame (first cylindrical body)
21 frame main body 22 flange portion 31 first piece 32 second piece 71 top plate 73 object to be supported 100 fixed portion 101 through hole 111 first opening hole 121 second opening hole Sp1 Internal space (of cylindrical frame) Sp2 (support frame ) interior space

Claims (5)

a metal tubular frame;
a cylindrical support frame that projects upward from a portion of the cylindrical frame along a horizontal plane in the installed state of the cylindrical frame and supports an object to be supported;
The tubular frame has a fixing portion to which the lower end of the support frame is fixed,
The fixed portion is formed with a through-hole through which the support frame passes so that the support frame is inserted upward from below,
The support frame has a frame main body that extends in the vertical direction when the tubular frame is installed, and a flange portion that protrudes outward from the outer peripheral surface of the lower end portion of the frame main body,
The flange portion is fixed to the fixing portion in a state in which the flange portion faces around the through hole in the lower surface of the fixing portion, and the frame body passes through the through hole.
Metal frame structure. a metal tubular frame;
a cylindrical support frame that projects upward from a portion of the cylindrical frame along a horizontal plane in the installed state of the cylindrical frame and supports an object to be supported;
The tubular frame has a fixing portion to which the lower end of the support frame is fixed,
The fixed portion is formed with a through-hole through which the support frame passes so that the support frame is inserted upward from below,
The tubular frame is configured by connecting a plurality of tubular bodies including a first tubular body and a second tubular body,
The first cylindrical body and the second cylindrical body have a first opening hole formed in one side surface of the first cylindrical body along the longitudinal direction, and a longitudinal direction of the second cylindrical body. joined with the second openings formed in one end faces facing each other,
A fitting that joins the first cylindrical body and the second cylindrical body includes a first piece fixed around the first opening hole of the first cylindrical body in the first cylindrical body. and a second piece fixed within the second barrel around the second opening of the second barrel,
the first piece is non-removably fixed to the first barrel;
the second piece is removably secured to the second barrel;
Metal frame structure. The inner space of the tubular frame and the inner space of the support frame communicate with each other, and include a wiring space for passing wiring,
A metal frame structure according to claim 1 or 2. The cylindrical frame includes a pair of side frames extending in one direction and a back frame connecting one end portions of the pair of side frames. can support
The fixed part is arranged on the back frame,
A metal frame structure according to claim 1 or 2. A wiring through-hole leading to an internal space of the tubular frame is formed on one side surface of the tubular frame along the longitudinal direction,
A metal frame structure according to claim 1 or 2 .

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