Mounting structure for building

Abstract

To provide a mounting structure for a building which can be made compact even when used at a joint of a structural frame of the building.SOLUTION: A mounting structure (5) for a building is for attaching a support member (4) that supports an object to a joint of a structural frame (2) of the building. The mounting structure (5) includes a base plate (50) disposed between the structural frame (2) and the support member (4), a first connector (51) that connects the base plate (50) to the structural frame (2), and a second connector (52) that connects the base plate (50) to the support member (4) and is provided at a position different from the first connector (51).SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for a building, and more particularly to a mounting structure for a building for mounting a support member for supporting an object to a joint portion of a structural frame of a building. [Background technology]

[0002] Various conventional techniques have been used to attach support members for supporting objects to the structural frame of a building. For example, a support member for supporting a mounting for equipment such as a solar panel is fastened to a building beam or the like with bolts. As shown in the conventional diagrams of FIGS. 9(A) and 9(B), a support member 104 is fixed to a joint (joint) of a beam structure 120 formed by a main beam 121 and an auxiliary beam 125 arranged perpendicular to the main beam 121. The support member 104 is formed of a support member main body 140 protruding upward and a base portion 142 that supports the lower end of the support member main body 140 and is arranged on the main beam 121. The main beam 121 and the support member 104 are fastened by vertically aligning bolt holes provided in each member and inserting the same bolt 105 through the bolt holes.

[0003] Furthermore, as a technology for fastening the structural frames of a building together, for example, Japanese Patent Laid-Open Publication No. 2-296942 (Patent Document 1) can be cited. Patent Document 1 discloses that when fastening a reinforced concrete foundation to a column, a column support bracket with two holes is placed between the reinforced concrete foundation and the column. It is disclosed that the column support bracket has an insertion hole through which a fastening bolt for connecting the base to the column is inserted, and an insertion hole through which an anchor bolt for connecting the base to the reinforced concrete foundation is inserted, which are each located in different positions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Unexamined Patent Publication No. 2-296942 Summary of the Invention [Problem to be solved by the invention]

[0005] When the beam 104 is fixed on the joint between the main beam 121 and the auxiliary beam 125, the size of the base portion 142 of the beam 104 becomes large due to the fitting relationship between the main beam 121 and the auxiliary beam 125, as shown in Figure 9(B).

[0006] Furthermore, the fixing structure of Patent Document 1 can only be used for techniques such as fixing a pillar to a foundation.

[0007] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a mounting structure for a building that can be made compact in shape even when used at the joints of the structural frame of a building. [Means for solving the problem]

[0008] A building mounting structure according to one aspect of the present invention is a building mounting structure for attaching a support member that supports an object to a joint portion of a building's structural body, and includes a base plate arranged between the structural body and the support member, a first connector that connects the base plate to the structural body, and a second connector that connects the base plate to the support member and is provided at a position different from the first connector.

[0009] Preferably, the base plate is provided with a first connecting point that connects to the structural body by a first connecting device and a second connecting point that connects to the support member by a second connecting device, and the base plate includes a pair of fixed support parts that extend linearly at both widthwise ends and position and fix and support the first connecting point and the second connecting point.

[0010] Preferably, the fixed support portion has a shape with a downward opening that is roughly U-shaped in cross section, and includes a pair of side wall portions, one end of which is fixed to the base plate, and a vertical wall portion that connects the other ends of the pair of side wall portions and abuts the support member, and a space is formed by the pair of side wall portions, the vertical wall portions, and the upper surface of the base plate.

[0011] Preferably, the first connector includes a first head, a first shaft extending axially from the first head, and a first fixing portion removably fixed to the first shaft, and the second connector includes a second head, a second shaft extending axially from the second head, and a second fixing portion removably fixed to the second shaft, and the first head or first fixing portion of the first connector and the second head or second fixing portion of the second connector are arranged in a space.

[0012] Preferably, the support member is a beam member, the structural body is a main beam arranged horizontally perpendicular to the auxiliary beam, and the base plate is within the flange width of the main beam and the auxiliary beam.

[0013] Preferably, the bundle member includes a base portion and a bundle member main body that protrudes upward from the base portion to support the object, the extension direction of the pair of fixed support portions is approximately the same as the extension direction of the main beam, and the pair of fixed support portions sandwich the bundle member main body. [Effects of the Invention]

[0014] According to the mounting structure of the present invention, even when used at a joint portion of the structural frame of a building, it can be made compact in shape. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an external view of a building using a mounting structure according to an embodiment of the present invention. [Figure 2] 1 is a perspective view of a support member used in a building using the mounting structure according to this embodiment. FIG. [Figure 3] 1 is an exploded perspective view showing the relationship between the mounting structure, the support member, and the structural body according to the present embodiment. FIG. [Figure 4] 4A and 4B are diagrams showing a mounting structure according to the present embodiment, in which (A) is a plan view, (B) is a cross-sectional view taken along line IVb-IVb, and (C) is a cross-sectional view taken along line IVc-IVc. [Figure 5]1A and 1B are diagrams showing a construction method of the mounting structure according to the present embodiment, in which (A) is a plan view and (B) is a cross-sectional view taken along line Vb-Vb. [Figure 6] 6A and 6B are diagrams showing a construction method of the mounting structure according to the present embodiment, in which (A) is a plan view and (B) is a cross-sectional view taken along line VIb-VIb. [Figure 7] 4A to 4C are cross-sectional views showing a construction method for the mounting structure according to the present embodiment. [Figure 8] 8A and 8B are diagrams showing a construction method of the mounting structure according to the present embodiment, in which (A) is a plan view and (B) is a cross-sectional view taken along line VIIIb-VIIIb. [Figure 9] 9A and 9B are diagrams showing a conventional mounting structure, in which (A) is a plan view and (B) is a cross-sectional view taken along line IXb-IXb. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in which like reference numerals denote like or corresponding parts and will not be described repeatedly.

[0017] <About the building> Prior to describing the mounting structure according to this embodiment, a building in which the mounting structure is to be installed will be described with reference to Figures 1 and 2. Building 1 is, for example, a steel-framed house with a flat roof, and solar panels 3 are installed on the flat roof. The mounting structure according to this embodiment is used when installing solar panels on a flat roof.

[0018] The building 1 is built on a base that is installed on a foundation poured into the ground. A beam structure 2 is installed on multiple columns that protrude upward from the base. The beam structure 2 extends horizontally and transmits the load of the flat roof to the columns. Specifically, the beam structure 2 includes a first beam 20 and a second beam 25 that is installed perpendicular to the first beam 20. The first beam 20 is a main beam, for example, an H-shaped steel beam with an H-shaped cross section, and includes a web 21 that extends vertically, an upper flange 22 located above the web 21, and a lower flange 23 located below the web 21. A support portion 24 for supporting the second beam 25 is attached to the web 21 of the first beam 20. As shown in FIG. 5 , the support portion 24 includes a horizontal portion 24a that is perpendicular to the extension direction of the web 21 and a vertical portion 24b that extends perpendicular to the horizontal portion 24a and in the same direction as the extension direction of the web 21.

[0019] 1 and 2, the second beam 25 is an auxiliary beam and, like the first beam 20, is an H-shaped steel beam with an H-shaped cross section. The second beam 25 includes a vertically extending web 26, an upper flange 27 located above the web 26, and a lower flange 28 located below the web 26. As shown in FIG. 5, the second beam 25 has a support portion 29 attached to its longitudinal end, which is perpendicular to the direction in which the web 26 extends. The vertical portion 24b of the first beam 20 and the support portion 29 of the second beam 25 are fixed, for example, by bolts. As a result, in the beam structure 2, the first beam 20 and the second beam 25 are perpendicular to each other, and the portion where the first beam 20 and the second beam 25 join is a joint portion. For ease of understanding, the flat roof is omitted from FIG. 1.

[0020] As shown in FIG. 1, a solar mounting frame 30 on which a solar panel 3 is placed is placed on a flat roof (beam structure 2). The solar mounting frame 30 is formed by a plurality of roof fixing members 31 placed on the flat roof, a plurality of cross beams 32 suspended over the plurality of roof fixing members 31, and a tilting base 33 placed on the cross beams 32 to tilt the solar panel 3. The solar mounting frame 30 is fixed to a beam member 4, and the beam member 4 is fixed directly above the joint (joint) between the first beam 20 and the second beam 25 via a mounting structure 5 (FIG. 3). The mounting structure 5 will be described later.

[0021] An example of a bundle member is shown in Figure 2. The bundle member 4 includes a base portion 42 and a bundle member main body 40 that protrudes upward from the base portion 42 and supports the solar mounting frame 30. The base portion 42 is fixed to a mounting structure 5, which will be described later. The base portion 42 is provided with a bundle hole 43 through which a first connector 51 (Figure 3) for connecting to the mounting structure 5, which will be described later, passes. The bundle member main body 40 is, for example, cylindrical, and is provided at its upper end with an upper fixing portion 41 that fixes the lower end of the roof fixing member 31 of the solar mounting frame 30.

[0022] The bundle member 4 of this embodiment supports the solar mounting frame 30 and is therefore a support member that supports the object, and the beam structure 2 of this embodiment is the framework of the building 1 and is therefore the structural body of the building 1. Therefore, the mounting structure 5 of this embodiment is for attaching the support member that supports the object to the structural body of the building. The mounting structure 5 for attaching the bundle member 4 to the joint of the beam structure 2 will be described in detail below.

[0023] <About the implementation form> (About the mounting structure) The mounting structure according to this embodiment will be described with reference to Figures 3 and 4. Figure 3 is an exploded perspective view of the mounting structure disposed between the bundle member and the beam structure, Figure 4(A) is a plan view, Figure 4(B) is a cross-sectional view taken along line IVb-IVb, and Figure 4(C) is a cross-sectional view taken along line IVc-IVc. The direction of arrow A shown in Figures 3, 4(A), and 4(C) is the extension direction of the first beam 20, which is also referred to as the depth direction of the base plate 50. The direction of arrow B shown in Figures 3, 4(A), and 4(B) is the extension direction of the second beam 25 (a direction perpendicular to the extension direction of the first beam 20), which is also referred to as the width direction of the base plate 50.

[0024] The mounting structure 5 generally comprises a base plate 50, a first connector 51, and a second connector 52. The configuration of each of these components will be described in detail.

[0025] The base plate 50 is attached directly onto the upper flange 22 of the first beam 20 via a first connector 51. The base plate 50 is made of, for example, steel and has, for example, a rectangular shape in a plan view. The thickness of the base plate 50 is, for example, 3 mm to 10 mm, and is typically 6 mm. The base plate 50 is sized to fit within the flange widths of the first beam 20 and the second beam 25. Specifically, the width dimension of the base plate 50 is approximately the same as or smaller than the horizontal width of the upper flange 22 of the first beam 20, and the depth dimension is approximately the same as or smaller than the upper flange 27 of the second beam 25. This eliminates the need to consider interference with other connecting elements, thereby improving design freedom.

[0026] Base holes 50a through which first connectors 51 pass are provided at both widthwise ends of the base plate 50 and approximately in the center in the depthwise direction. The base plate 50 includes fixed support parts 53 that support the first connectors 51 and the second connectors 52, and the fixed support parts 53 will be explained after the first connectors 51 and the second connectors 52 are explained.

[0027] The first connector 51 connects the base plate 50 and the beam structure 2, and for example, two first connectors 51 are provided. The first connector 51 is, for example, a bolt and nut, and is formed of a first head 51a, a first shaft 51b that extends axially from the first head 51a and has a groove formed therein, and a first fixing part 51c that is detachably fixed to the first shaft 51b.

[0028] The first shaft portion 51b of the first connector 51 passes through both the base hole 50a of the base plate 50 described above and the flange hole 21a formed in the upper flange 22 of the first beam 20, the first head portion 51a abuts against the base plate 50, and the first fixing portion 51c is tightened and fixed to the back surface of the upper flange 22. Note that the first connector 51 is not limited to a bolt and a nut, and various other connectors may be used. For example, a tapped hole may be formed in the base hole 50a or the flange hole 21a, or the first connector may be a fastener that does not have the first head portion 51a or the first fixing portion 51c.

[0029] The second connectors 52 connect the base plate 50 and the bundle member 4, and for example, four of them are provided. The second connectors 52 are provided at positions different from the first connectors 51. Specifically, the second connectors 52 are provided at positions offset, for example, in the depth direction or width direction, with respect to the first connectors 51. The second connectors 52 are similar to the first connectors 51, and are, for example, a bolt and nut, and are formed by a second head 52a, a second shaft portion 52b extending axially from the second head 52a and having a groove formed therein, and a second fixing portion 52c that is detachably fixed to the second shaft portion 52b.

[0030] The second shaft portion 52b of the second connector 52 passes through both a fixing support hole 54a of the fixing support portion 53 (described later) and a mounting hole 43 formed in the base portion 42 of the mounting member 4, and is fastened and fixed by the second fixing portion 52c. Note that the second connector 52 is not limited to a bolt and a nut, and various other connectors may be used. For example, the second connector 52 may be a fastener in which tapped holes are formed in the fixing support hole 54a and the mounting hole 43, and which is not provided with the second head portion 52a or the second fixing portion 52c.

[0031] The base plate 50 includes a fixing support portion 53 that positions and fixes and supports a first connection point between the first connector 51 and the base plate 50 and a second connection point between the second connector 52 and the base plate 50. Here, the first connection point is a point where the beam structure 2 and the base plate 50 are connected by the first connector 51, specifically a point where the first connector 51 passes through the base hole 50a of the base plate 50 and the flange hole 21a of the first beam 20. Furthermore, the second connection point is a point where the second connector 52 connects the bundle member 4 and the base plate 50, specifically a point where the second connector 52 passes through the fixing support hole 54a of the fixing support portion 53 and the bundle hole 43 of the bundle member 4.

[0032] The fixed support portions 53 are provided in two linear rows at both widthwise ends of the base plate 50. The fixed support portions 53 are made of steel like the base plate 50 described above, and are formed by bending a single plate into a generally U-shape. The thickness of the fixed support portions 53 is preferably thinner than the thickness of the base plate 50, and is, for example, between 1 mm and 4.5 mm, and preferably 3.2 mm or less.

[0033] The fixed support portion 53 has, for example, a generally U-shaped cross section, and includes a pair of side wall portions 55 whose lower ends are fixed to the base plate 50, and a standing wall portion 54 that connects the upper ends of the pair of side wall portions 55 and abuts against the pedestal portion 42 of the bundle member 4. The lower ends of the pair of side wall portions 55 are welded and fixed to the surface of the base plate 50. As a result, the fixed support portion 53 is formed integrally with the base plate 50.

[0034] The height from the base plate 50 to the standing wall portion 54 (height dimension of the side wall portion 55) is greater than the height dimension of the base plate 50, for example, at least twice the height dimension of the base plate 50, and preferably at least four times the height dimension of the base plate 50. The height from the base plate 50 to the standing wall portion 54 depends on the sizes of the first head portion 51a and the second fixing portion 52c, but is greater than the combined height of the first head portion 51a and the second fixing portion 52c. Furthermore, the width dimension of the standing wall portion 54 is greater than the width dimension of the first head portion 51a and the second fixing portion 52c, and from the viewpoint of strength, is preferably between one-fifth and one-third of the width dimension of the base plate 50.

[0035] As shown in FIGS. 4(B) and 4(C), a space 56 is formed, surrounded on all four sides, by the pair of side walls 55, the upright wall 54, and the base plate 50 of the fixed support portion 53. The first head 51a of the first connector 51 and the second fixing portion 52c of the second connector 52 are preset in this space 56. Specifically, a pair of fixing support holes 54a are formed in the upright wall 54, and the second fixing portion 52c of the second connector 52 is disposed and fixed at a position corresponding to the pair of fixing support holes 54a. Furthermore, the base hole 50a formed in the base plate 50 is formed within the space 56, the first head 51a of the first connector 51 is formed in the space 56, and the first shaft portion 51b passes through the base hole 50a.

[0036] 4(A) and 4(C), the base hole 50a through which the first connector 51 passes and the fixed support hole 54a of the second connector 52 are arranged in a straight line in the depth direction within the space 56, with the base hole 50a being sandwiched between the two fixed support holes 54a. Note that the base hole 50a and the fixed support hole 54a only need to be arranged within the space 56 of the fixed support part 53, and may be offset by approximately 10 mm in the width direction. Using such a mounting structure 5, the bundle member 4 can be attached to the joint of the beam structure 2.

[0037] Furthermore, the second fixing portion 52c is disposed within the space 56, but is disposed closer to the side wall portion 55 rather than at the center of the width of the space 56. This prevents the second fixing portion 52c from coming into contact with the side wall portion 55 and rotating when the second connector 52 is fixed to the fixed support portion 53.

[0038] (Installation method of the mounting structure) Next, a method for attaching the bundle member 4 to the joint portion of the beam structure 2 will be described with reference to FIGS.

[0039] Fig. 5(A) is a plan view showing the state in which the mounting structure is placed above the beam structure, and Fig. 5(B) is a cross-sectional view taken along line Vb-Vb in Fig. 5(A). As shown in Fig. 5(B), the mounting structure 5 is placed above the beam structure 2. In this state, the head 51a and shaft 51b of the first connector 51 and the second fixing portion 52c of the second connector 52 are placed in the space 56 formed by the fixed support portion 53 and the base plate 50.

[0040] Specifically, the first shaft portion 51b is inserted through the base hole 50a of the base plate 50, and the second fixing portion 52c of the second connector 52 is temporarily fixed to the fixing support hole 54a of the fixing support portion 53. First, the first shaft portion 51b of the first connector 51 is aligned so that it passes through the flange hole 21a of the first beam 20.

[0041] Fig. 6(A) is a plan view showing the state in which the bundle member is placed above the mounting structure, and Fig. 6(B) is a cross-sectional view taken along line VIb-VIb in Fig. 6(A). As shown in Fig. 6(B), the first shaft portion 51b of the first connector 51 is inserted through the flange hole 21a of the first beam 20, and the first fixing portion 51c is fastened to the first shaft portion 51b protruding from below the upper flange 22.

[0042] This allows the first beam 20 and the base plate 50 of the mounting structure 5 to be fixed together. In this state, the bundle member 4 is placed above the fixed support part 53. At this time, the second shaft part 52b of the second connector 52 is aligned so that it passes through the bundle hole 43 of the bundle member 4 and the fixed support hole 54a of the fixed support part 53.

[0043] 7 is a cross-sectional view of the state in which the bundle member is attached to the mounting structure. As shown in Fig. 7, the second shaft portion 52b of the second connector 52 is inserted through the bundle hole 43 and the fixed support hole 54a, and the second fixing portion 52c preset in the fixed support portion 53 is fastened and fixed to the second shaft portion 52b. This connects the bundle member 4 to the fixed support portion 53 of the base plate 50.

[0044] Fig. 8(A) is a plan view showing the roofing material after it has been attached, and Fig. 8(B) is a cross-sectional view taken along line VIIIb-VIIIb in Fig. 8(A). As shown in Fig. 8(A), the roofing material 60 has a cutout 61 formed by cutting out the outer shape of the base portion 42 of the beam member 4, so that it can be installed above the beam structure 2. In this way, by connecting the beam structure 2 to the base plate 50 and then connecting the beam member 4 to the base plate 50 without directly connecting the beam structure 2 to the beam member 4, it is possible to connect and fix the beam structure 2 to the beam member 4.

[0045] As shown in Figure 9(B), in the past, when fixing the beam member 104 on top of the joint of the main beam 121, it was necessary to align the bolt holes of the main beam 121 and the beam member 104, which sometimes resulted in the size of the base portion of the beam member 104 becoming larger due to the joint relationship with the auxiliary beam 125.

[0046] In contrast, the mounting structure of this embodiment allows the connection points of the first connectors 51 connecting the beam structure 2 and the base plate 50 to be different from the connection points of the second connectors 52 connecting the beam structure 2 and the base plate 50, making it possible to make the base plate 50 more compact. This allows the size of the cutouts 61 in the roofing material 60 to be smaller, making it easier to install rain protection. Furthermore, since the connection points of the beam structure 2 and the beam members 4 do not need to be the same, installation work can be improved compared to conventional methods.

[0047] In addition, fixed support portions 53 that arrange the first and second connection points in a straight line and fix and support them are provided at both widthwise ends of the base plate 50, so that the load of the solar mounting frame 30 received by the bundle member 4 can be supported with the first and second connection points offset.

[0048] <About modified examples> In the above embodiment, the fixed support portion 53 has been described as being roughly U-shaped in cross section, but it may also be, for example, roughly L-shaped in cross section, and may not have a side wall portion 55 located inward in the width direction, but may be formed by a side wall portion 55 located outward in the width direction and a standing wall portion 54 protruding inward from the upper end of the side wall portion 55.

[0049] Furthermore, although the fixed support portion 53 has a shape with a downward opening that is generally U-shaped in cross section, the fixed support portion 53 may have a solid shape without the space 56 provided inside the fixed support portion 53. For example, the fixed support portion 53 may be a square piece of timber whose thickness is greater than that of the base plate 50, and the square piece of timber may have tapped holes formed therein, and the first connector 51 and the second connector 52 may be connected by the tapped holes.

[0050] In this embodiment, two first connectors 51 connect the base plate 50 and the beam structure 2, and four second connectors 52 connect the fixed support part 53 integral with the base plate 50 and the bundle member 4, but they may be upside down or arranged differently. Also, while the first connectors 51 are provided in two locations and the second connectors 52 are provided in four locations, they may be arranged in the opposite direction, and the numbers of connectors 51 and 52 are selected depending on strength.

[0051] In the above embodiment, the second fixing portion 52c of the second connector 52 is disposed within the space 56 of the fixed support portion 53. However, the second head portion 52a may be disposed within the space 56 and the second shaft portion 52b may be preset by passing through the fixed support hole 54a in advance. In this case, by adjusting the height of the upright wall portion 54 of the fixed support portion 53 to a height that allows it to abut against the second head portion 52a, it is possible to prevent rotation of the second head portion 52a without welding.

[0052] The mounting structure 5 in this embodiment is attached to the solar mounting frame 30, but it may be any structure that attaches a support member that supports an object to the structural frame of a building. For example, it may be a structure that attaches a support member that supports an exterior to an H-beam column, or a structure that attaches a support member that supports a floor board to the foundation of a building. Furthermore, the mounting structure 5 is for attaching the beam member 4 onto the joint of the orthogonal beam structures 2, but it is not limited to the orthogonal beam structures 2, and it may be any structure that attaches a support member that supports an object to the joint of the structural frame of a building.

[0053] The above-described embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present invention should not be interpreted solely by the above-described embodiments, but should be defined by the claims. Furthermore, all modifications within the scope and meaning equivalent to the claims are included. [Explanation of symbols]

[0054] 1 Building, 2 Beam structure (structural body), 4 Bundle member, 5 Mounting structure, 30 Solar mounting base, 40 Bundle member main body, 42 Base portion, 50 Base plate, 51 First connector, 51b First axis portion, 51b Axle portion, 51c First fixing portion, 51c Fixing portion, 52 Second connector, 52a Second head portion, 52b Second axis portion, 52c Second fixing portion, 53 Fixed support portion, 54 Standing wall portion, 55 Side wall portion, 56 Space.

Claims

1. A mounting structure for a building for mounting a support member that supports an object to a joint portion of a structural frame of the building, a base plate disposed between the structural body and the support member; a first connector that connects the base plate and the structural body; A mounting structure for a building, comprising: a second connector that connects the base plate and the support member and is provided at a position different from that of the first connector.

2. The base plate is provided with a first connection portion that connects to the structural body via the first connector and a second connection portion that connects to the support member via the second connector, The building mounting structure according to claim 1, wherein the base plate includes a pair of fixed support portions extending linearly at both widthwise ends thereof, and which position and fix and support the first connecting point and the second connecting point.

3. the fixed support portion has a shape that is generally U-shaped in cross section and has a downward opening, and includes a pair of side wall portions whose one ends are fixed to the base plate, and a standing wall portion that connects the other ends of the pair of side wall portions and abuts against the support member, The mounting structure for a building according to claim 2 , wherein a space is formed by the pair of side wall portions, the standing wall portion, and the upper surface of the base plate.

4. the first coupling device includes a first head, a first shaft extending axially from the first head, and a first fixing portion detachably fixed to the first shaft, the second coupling device includes a second head, a second shaft extending axially from the second head, and a second fixing portion detachably fixed to the second shaft, The building mounting structure according to claim 3, wherein the first head or first fixing portion of the first connector and the second head or second fixing portion of the second connector are arranged within the space.

5. the support member is a bundle member, The structural frame is a main beam that is provided perpendicular to the auxiliary beam in the horizontal direction, The mounting structure for a building according to claim 1 or 2, wherein the base plate is within a flange width of the main beam and the auxiliary beam.

6. the bundle member includes a base portion and a bundle member main body that protrudes upward from the base portion and supports the object, The extending direction of the pair of fixed support parts is substantially the same as the extending direction of the main beam, The mounting structure for a building according to claim 5 , wherein the pair of fixed support parts sandwich the bundle member body.

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