JP7688917B2 - Mounting hardware and installation method - Google Patents

Description

The present invention relates to a mounting bracket and a mounting method for attaching a load to the exterior wall of a building to which siding boards are attached.

In some cases, loads such as clotheslines, sunshades, and outdoor decorations are attached to the exterior walls of buildings to which siding boards are attached. These loads are usually attached to the exterior walls of buildings using support brackets that have support parts with openings through which bolts or the like can pass (for example, Non-Patent Document 1).

However, when attempting to attach such a load to the exterior wall of a building to which siding boards are attached, there is an issue that the force applied to the siding board when, for example, tightening a bolt can cause damage such as cracks to the siding board. In addition, even after the load is attached, there is an issue that the force applied to the siding board from the load can cause damage such as cracks to the siding board.

A method is known in which a load is attached to the exterior wall of a building before siding boards are attached (for example, Patent Document 1). However, if you try to attach a load to the exterior wall of a building to which siding boards have already been attached, it is necessary to remove the siding boards or cut them into large sections, which increases the construction time and costs of the work.

"Hosscreen for window walls" (searched on June 3, 2022) <https://www.kawaguchigiken.co.jp/products/monohoshi/window>

JP 2015-218448 A

The present invention aims to provide a mounting bracket and mounting method that can prevent external forces from being applied to the siding board when and after a load is attached to the exterior wall of a building to which the siding board is attached, and that can be easily attached to the exterior wall to which the siding board is attached.

To achieve the above object, the mounting bracket of the present invention is composed of a plurality of columnar spacers having a length greater than the thickness of the siding board and whose longitudinal axes are parallel to each other, and a base plate to which one end of the plurality of columnar spacers is fixed to set the spacing between the longitudinal axes, and through holes are provided that pass through each of the columnar spacers and the base plate along the longitudinal axis.

The mounting method of the present invention uses the above mounting hardware and includes the following steps in this order: a first step of forming multiple holes in the siding board that have a diameter larger than the outer diameter of the columnar spacer and that penetrate the siding board in the thickness direction; a second step of applying a waterproof sealant around the multiple holes in the siding board; a third step of inserting the columnar spacers of the mounting hardware into the multiple holes in the siding board and abutting the ends of the columnar spacers against the building's framework; and a fourth step of fixing the load and mounting hardware to the building's framework through the opening in the load support portion, which is part of the load, and through the through hole in the mounting hardware.

The mounting hardware of the present invention can prevent damage such as cracks from occurring in the siding board when a load is attached to the exterior wall of a building to which the siding board is attached, and after the load is attached.

The installation method of the present invention allows loads to be attached to the exterior walls of buildings to which siding boards have been attached, without having to remove or cut the siding boards.

1A is a perspective view showing an example of the configuration of a mounting bracket 10 according to an embodiment, and FIG. FIG. 2 is a perspective view illustrating the arrangement of components including the mounting bracket 10 according to the embodiment. 1 is a cross-sectional view showing a state in which a load 20 is attached to the exterior wall of a building using a mounting bracket 10 according to an embodiment. FIG. FIG. 2 is a flow diagram showing a process for attaching a load 20 to the exterior wall of a building using a mounting bracket 10 according to an embodiment. FIG. 13 is a perspective view showing a modified example of the mounting bracket 10.

Figure 1 shows an example of the configuration of a mounting bracket 10 according to an embodiment. Figure 1(A) shows an oblique view of the mounting bracket 10 according to an embodiment. Figure 1(B) shows a side view of the mounting bracket 10 as viewed from the +X direction. Figure 1(C) shows a side view of the mounting bracket 10 as viewed from the +Y direction. Identical parts of the mounting bracket 10 shown in Figures 1(A), (B), and (C) are given the same reference numerals.

The mounting bracket 10 is composed of three parts: a first columnar spacer 12, a second columnar spacer 14, and a base plate 16. The mounting bracket 10 is a metal bracket in which the first columnar spacer 12, the second columnar spacer 14, and the base plate 16 are made of, for example, stainless steel.

The first columnar spacer 12 corresponds to a columnar portion extending in the direction of the longitudinal axis L1. The second columnar spacer 14 corresponds to a columnar portion extending in the direction of the longitudinal axis L2. The base plate 16 is a plate-like portion having a surface perpendicular to the longitudinal axis L1 and the longitudinal axis L2, and having one end of the first columnar spacer 12 and the second columnar spacer 14 bonded to its surface in the extension direction. The base plate 16 fixes one end of the first columnar spacer 12 and one end of the second columnar spacer 14, thereby setting the longitudinal axis L1 of the first columnar spacer 12 and the longitudinal axis L2 of the second columnar spacer 14 approximately parallel to each other.

As shown in FIG. 1A, the first columnar spacer 12 is joined to the base plate 16 at one end 122 in the direction of the longitudinal axis L1. The second columnar spacer 14 is joined to the base plate 16 at one end 142 in the direction of the longitudinal axis L2. As a result, the base plate 16 sets the distance between the first columnar spacer 12 and the second columnar spacer 14.

The first columnar spacer 12 and the base plate 16 may be joined by welding. The second columnar spacer 14 and the base plate 16 may be joined by welding. Alternatively, one end 122 of the first columnar spacer 12 and one end 142 of the second columnar spacer 14 may be joined by screwing them into threaded holes provided in the base plate 16. Alternatively, one end 122 of the first columnar spacer 12 and one end 142 of the second columnar spacer 14 may be joined by fitting them into holes provided in the base plate 16.

As shown in FIG. 1B, the first columnar spacer 12 has one end 122 on the opposite side of the other end 123 along the longitudinal axis L1, and the distance between the one end 122 and the other end 123 corresponds to the length of the first columnar spacer 12 along the longitudinal axis L1. The second columnar spacer 14 has one end 143 on the opposite side of the one end 142 along the longitudinal axis L2, and the distance between the one end 142 and the other end 143 corresponds to the length of the second columnar spacer 14 along the longitudinal axis L2.

The first columnar spacer 12 has a through hole 121 along the longitudinal axis L1 of the first columnar spacer 12. The through hole 121 is a through hole that penetrates the first columnar spacer 12 and the base plate 16 along the longitudinal axis L1. The second columnar spacer 14 has a through hole 141 along the longitudinal axis L2 of the second columnar spacer 14. The through hole 141 is a through hole that penetrates the second columnar spacer 14 and the base plate 16 along the longitudinal axis L2.

Figure 1 shows an example in which the first columnar spacer 12 and the second columnar spacer 14 are cylindrical. The through hole 121 penetrates the first columnar spacer 12 and the base plate 16 along the cylindrical central axis of the first columnar spacer 12. The through hole 141 penetrates the second columnar spacer 14 and the base plate 16 along the cylindrical central axis of the second columnar spacer 14.

The first columnar spacer 12 shown in FIG. 1 is a cylindrical member having an outer diameter of, for example, 15 mm, and a length between one end 122 and the other end 123 of, for example, 40 mm. The second columnar spacer 14 is a cylindrical member having an outer diameter of, for example, 15 mm, and a length between one end 142 and the other end 143 of, for example, 40 mm. In addition, the inner diameter of the through hole 121 and the inner diameter of the through hole 141 are both, for example, 10 mm.

The base plate 16 shown in FIG. 1 is a plate-like member with a surface for fixing the first columnar spacer 12 and the second columnar spacer 14, the surface being, for example, 150 mm×30 mm in size and, for example, 5 mm in thickness. The first columnar spacer 12 and the second columnar spacer 14 are fixed perpendicularly to the plate surface of the base plate 16, with a distance between the longitudinal axis L1 and the longitudinal axis L2 being, for example, 110 mm.

Figure 2 is a perspective view illustrating the arrangement of components including the mounting bracket 10 according to the embodiment. Figure 2 is a perspective view illustrating the arrangement of a building's framework material 50, such as a pillar, the mounting bracket 10, and the load 20 when the mounting bracket 10 is used to attach the load 20 to the exterior wall of a building to which a siding board is attached. The mounting bracket 10 shown in Figure 2 has the same reference numerals as the mounting bracket 10 shown in Figure 1 for the same parts. Also, to simplify the drawing, the siding board is not shown in Figure 2.

Figure 2 shows the arrangement of a part of the building's framework 50, mounting bracket 10, and load 20 in a coordinate system in which the vertical direction is the Z direction and the horizontal direction is the XY direction. The vertically upward direction corresponds to the +Z direction, and the vertically downward direction corresponds to the -Z direction, and the outer surface 51 of the building's framework 50 is represented by a surface approximately parallel to the XZ plane.

The mounting bracket 10 is arranged so that the through hole 121 provided along the longitudinal axis L1 of the first columnar spacer 12 and the through hole 141 provided along the longitudinal axis L2 of the second columnar spacer 14 face in the Y-axis direction, perpendicular to the outer surface 51 of the building frame material 50.

The first columnar spacer 12 of the mounting bracket 10 has a length from one end 122 to the other end 123 in the length direction that is greater than the thickness of the siding board attached to the exterior wall of the building. The first columnar spacer 12 is positioned so that the other end 123 in the length direction abuts against the outer surface 51 of the building's framework 50. The second columnar spacer 14 of the mounting bracket 10 has a length from one end 142 to the other end 143 in the length direction that is greater than the thickness of the siding board attached to the exterior wall of the building. The second columnar spacer 14 is positioned so that the other end 143 in the length direction abuts against the outer surface 51 of the building's framework 50.

The siding board (not shown in FIG. 2) is attached along the outer surface 51 of the framework 50, on the outer side (+Y side) of the outer surface 51. The length from one end 122 to the other end 123 of the first columnar spacer 12 is greater than the thickness from the outer surface 51 of the framework 50 of the building to the +Y side surface of the siding board, including the gap space required to attach the siding board to the exterior wall of the building. The length from one end 142 to the other end 143 of the second columnar spacer 14 is greater than the thickness from the outer surface 51 of the framework 50 of the building to the +Y side surface of the siding board, including the gap space required to attach the siding board to the exterior wall of the building.

As a result, the siding board is sandwiched between the outer surface 51 of the building's framework 50 and the base plate 16 of the mounting bracket 10, with an appropriate gap between the front side, which is the +Y side, and the back side, which is the -Y side. The first columnar spacer 12 and the second columnar spacer 14 form a space in which the siding board can be installed without coming into contact with the outer surface 51 of the building's framework 50 or the base plate 16 of the mounting bracket 10.

In one example, the length of the first columnar spacer 12 and the second columnar spacer 14 is, for example, 40 mm, and the thickness from the outer surface 51 of the building's framework material 50 to the +Y side surface of the siding board, including the gap space for attaching the siding board, is, for example, 37 mm. As a result, the siding board is sandwiched between the outer surface 51 of the building's framework material 50 and the base plate 16 of the mounting bracket 10, with a gap of approximately 3 mm on the surface side, which is the +Y side.

The length of the first columnar spacer 12 and the second columnar spacer 14 may be changed depending on the thickness of the siding board. The first columnar spacer 12 and/or the second columnar spacer 14 may have a scale marking indicating the length of the columnar spacer along part of the length direction. This scale may be used to determine the length of the first columnar spacer 12 and the second columnar spacer 14 depending on the thickness of the siding board.

The load 20 to be attached to the exterior wall of a building is composed of a support portion 21 and a load body portion 24. The support portion 21 has a number of openings for attaching the load 20 to the exterior wall of the building. The openings in the support portion 21 are used as holes for passing bolts or the like for attaching the load 20 to the exterior wall of the building. There are various types of loads 20 depending on the purpose, such as a clothesline pole and a clothesline pole support bracket as shown in Non-Patent Document 1, a sunshade sheet and a support bracket for mounting the sunshade sheet, and an outdoor decoration and a support bracket for mounting the outdoor decoration. Although FIG. 2 does not show the details of the load body portion 24, the load body portion 24 corresponds to a part of these loads 20.

Figure 2 shows an example in which two openings 22, 23 are provided in the support part 21. Gravity acting on the load 20 generates a load in the vertical downward direction (-Z direction) and a moment around the X axis in the support part 21 of the load 20. For this reason, the openings 22, 23 of the support part 21 are usually used spaced apart in the approximately vertical direction.

The first columnar spacer 12 and through hole 121 of the mounting bracket 10, as well as the second columnar spacer 14 and through hole 141, are set according to the openings 22, 23 provided in the support portion 21 of the load 20. That is, the through hole 121 provided along the longitudinal axis L1 of the first columnar spacer 12 is configured to be on the same L1 axis as the opening 22. The through hole 141 provided along the longitudinal axis L2 of the second columnar spacer 14 is configured to be on the same L2 axis as the opening 23. As a result, the first columnar spacer 12 and through hole 121 of the mounting bracket 10, as well as the second columnar spacer 14 and through hole 141, are usually spaced apart in the approximately vertical direction.

Figure 3 is a cross-sectional view showing a load 20 attached to the exterior wall of a building using a mounting bracket 10 according to an embodiment. Figure 3 shows the arrangement of a portion of the load 20, including a building framework 50 such as a pillar, a siding board 40, the mounting bracket 10, and a support portion 21 of the load 20, when the load 20 is attached. In the cross-sectional view shown in Figure 3, parts that are the same as those shown in Figures 1 and 2 are given the same reference numerals and will not be described repeatedly.

The cross-sectional view shown in FIG. 3 is a cross-sectional view of the framework material 50, siding board 40, mounting bracket 10, and part of the load 20 cut out in a plane parallel to the YZ plane including the longitudinal axis L1 of the first columnar spacer 12 and the longitudinal axis L2 of the second columnar spacer 14 in a coordinate system in which the vertical direction is the Z direction and the horizontal direction is the XY direction.

The siding board 40 is a finishing board material that is attached along the exterior wall of a building, including the outer surface 51 of the framework material 50. Siding boards 40 are available in a variety of materials, including ceramic, metal, wood, and resin. Siding boards 40 have the advantages of being available in a wide variety of designs, stable quality, and lightweight, as well as the ability to shorten the time required for exterior wall finishing. Siding boards 40 are used in many buildings as a finishing exterior wall material.

As shown in FIG. 3, siding board 40 is made by attaching boards 41 and 42 cut according to the size and shape of the exterior wall of a building to the exterior wall of the building using fasteners 61 or the like. The joints between boards 41 and 42 are filled with a waterproof sealant 62 (called sealing or caulking).

In the cross-sectional view shown in FIG. 3, a portion of the siding board 40 that covers the building's framework material 50, such as a pillar, has a plurality of holes that penetrate the siding board 40 in the thickness direction. These holes are for installing the mounting brackets 10. The holes in the siding board 40 for installing the mounting brackets 10 each have an inner diameter larger than the outer diameters of the first columnar spacer 12 and the second columnar spacer 14, and are arranged in a row in the approximately vertical direction at a distance corresponding to the distance between the longitudinal axis L1 of the first columnar spacer 12 and the longitudinal axis L2 of the second columnar spacer 14.

In one example, the outer diameter of the first columnar spacer 12 and the second columnar spacer 14 is, for example, 15 mm, and the inner diameter of the multiple holes in the siding board 40 is, for example, 20 mm. The multiple holes in the siding board 40 are arranged in a row in the approximately vertical direction, with a distance between their central axes of, for example, 110 mm, just like the first columnar spacer 12 and the second columnar spacer 14.

The mounting bracket 10 is installed by inserting the first columnar spacer 12 and the second columnar spacer 14 fixed to the base plate 16 into the multiple holes provided in the siding board 40 in a direction perpendicular to the outer surface 51 of the skeleton 50 (Y-axis direction). The mounting bracket 10 is installed by inserting the other end 123 of the first columnar spacer 12 in the length direction until it abuts against the outer surface 51 of the skeleton 50. The mounting bracket 10 is installed by inserting the other end 143 of the second columnar spacer 14 in the length direction until it abuts against the outer surface 51 of the skeleton 50.

As described above, the multiple holes provided in the siding board 40 have an inner diameter larger than the outer diameter of the columnar spacer of the mounting bracket 10. In addition, the columnar spacer of the mounting bracket 10 has a length larger than the thickness from the outer surface 51 of the building's framework 50 to the surface of the siding board, including the gap space for attaching the siding board. As a result, when the other end 123 of the first columnar spacer 12 and the other end 143 of the second columnar spacer 14 of the mounting bracket 10 are inserted until they abut the outer surface 51 of the framework 50, the first columnar spacer 12 and the second columnar spacer 14 of the mounting bracket 10, as well as the base plate 16, are not in contact with the siding board 40.

The fixing bolt 32 fixes the load 20 and the mounting bracket 10 to the building's framework 50 through the opening 22 of the support portion 21 of the load 20 and the through hole 121 of the mounting bracket 10 with the first columnar spacer 12 of the mounting bracket 10 inserted into the hole in the siding board 40. The fixing bolt 34 fixes the load 20 and the mounting bracket 10 to the building's framework 50 through the opening 23 of the support portion 21 of the load 20 and the through hole 141 of the mounting bracket 10 with the second columnar spacer 14 of the mounting bracket 10 inserted into the hole in the siding board 40.

The other end 123 of the first columnar spacer 12 and the other end 143 of the second columnar spacer 14 of the mounting bracket 10 abut against the outer surface 51 of the building's framework 50, and the first columnar spacer 12 and second columnar spacer 14 of the mounting bracket 10 and the base plate 16 are not in contact with the siding board 40. Therefore, even if the fixing bolts 32, 34 are tightened, the siding board 40 does not receive force from the fixing bolts 32, 34. In other words, when the load 20 is attached to the exterior wall of the building, no external force is applied to the siding board 40 from the fixing bolts 32, 34.

In addition, after the load 20 is attached to the exterior wall of the building, the load and moment due to gravity acting on the load 20 are supported by the building's framework 50, the fixing bolts 32, 34 fixed to the framework 50, the support portion 21 of the load 20, and the mounting bracket 10 whose other end 123, 143 abuts against the framework 50. In other words, even after the load 20 is attached to the exterior wall of the building, no external force from the load 20 is applied to the siding board 40.

In other words, by using the mounting bracket 10 according to this embodiment, the force applied to the exterior wall when attaching the load 20 to the exterior wall to which the siding board 40 is attached, and the force applied from the load 20 to the exterior wall after the load 20 is attached, are not transmitted to the siding board 40. These forces can be prevented from causing damage such as cracks in the siding board 40.

Figure 3 shows a case where the waterproof sealant 63 fills the gap between the outside of the columnar spacers 12, 14 of the mounting bracket 10 and the inside of the hole in the siding board 40. The waterproof sealant 63 prevents rainwater and other elements from entering the building through the gap between the columnar spacers and the siding board. Since the waterproof sealant 63 retains elasticity even after solidification, even if the gap is filled with the waterproof sealant 63, the force applied to the exterior wall when attaching the load 20 and the force applied to the exterior wall after the load 20 is attached are not directly transmitted to the siding board 40, preventing damage such as cracks from occurring in the siding board 40.

In relation to this, the through holes 121, 141 of the mounting bracket 10 into which the fixing bolts 32, 34 are inserted are sealed with the base plate 16, the support portion 21 of the load 20, and the fixing bolts 32, 34. This prevents rainwater and the like from entering through the through holes 121, 141. To ensure waterproofing, a waterproof sealant 63 may be applied to the gap between the base plate 16 and the siding board 40, the contact portion between the base plate 16 and the support portion 21 of the load 20, and the contact portion between the support portion 21 of the load 20 and the head of the fixing bolt.

Figure 4 is a flow diagram showing the steps of a method for attaching a load 20 to the exterior wall of a building using the mounting bracket 10 according to the embodiment. The steps shown in Figure 4 are steps for retrofitting the load 20 to the exterior wall of a building to which a siding board has already been attached.

First, a number of holes are drilled through the siding board 40 covering the framework 50 of the building in the thickness direction (step 202). The holes that penetrate the siding board 40 can be easily drilled with an appropriate tool such as an electric drill. Each hole has a diameter of, for example, 20 mm. The positions of the holes to be drilled correspond to the framework 50 and are determined according to the spacing of the openings through which the fixing bolts or the like are passed that are provided in the support portion 21 of the load 20.

The waterproof sealant 63 is applied around the opening of the hole in the siding board 40 (step 204). The waterproof sealant 63 has sufficient plasticity when applied, and the waterproof sealant 63 is applied around the opening of the hole from the outside (+Y side, see Figure 3) of the hole in the siding board 40.

The columnar spacers 12 and 14 of the mounting bracket 10 are inserted into the holes in the siding board 40, and the other ends 123 and 143 of the columnar spacers are butted against the outer surface 51 of the framework 50 (step 206). The first columnar spacer 12 and the second columnar spacer 14 of the mounting bracket 10 are inserted into the holes in the siding board 40 along the longitudinal axis L1 and the longitudinal axis L2. The waterproof sealant 63 applied around the opening of the holes spreads to fill the gap between the outside of the columnar spacers 12 and 14 and the inside of the holes in the siding board 40. The columnar spacers 12 and 14 are inserted until the other longitudinal ends 123 and 143 of each of them butt against the outer surface 51 of the framework 50.

The support portion 21 of the load 20 is fixed to the framework 50 together with the mounting bracket 10 by the fixing bolts (step 208). The openings 22, 23 of the support portion 21 of the load 20 are on the same axes L1, L2 as the through holes 121, 141 of the mounting bracket 10, respectively, and the fixing bolts 32, 34 can be passed through them. As a result, the fixing bolts 32, 34 fix the load 20 together with the mounting bracket 10 to the framework 50.

The mounting method shown in Fig. 4 allows the load 20 to be mounted after the siding board has already been attached to the exterior wall of the building. The work on the siding board 40 is simply to drill a number of holes, for example 20 mm in diameter, and to apply a waterproof sealant. There is no need to remove the siding board or cut a large area of the board. The mounting method shown in Fig. 4 contributes to reducing the construction time and cost of mounting the load 20 to the exterior wall of a building to which a siding board has been attached.
(Modification)

Figure 5 is a perspective view showing a modified example of the mounting bracket 10. Figure 5(A) shows an example with four columnar spacers, and Figures 5(B) and (C) show examples with columnar spacers that are not cylindrical.

The load 20 to be attached to the exterior wall of a building may have two or more openings in the support portion 21. The columnar spacers and through holes of the mounting bracket 10 may be set according to the number and arrangement of openings provided in the support portion 21 of the load 20.

Figure 5 (A) shows an example in which the mounting bracket 10 is composed of four columnar spacers 152, 154, 156, 158 and a base plate 16. The columnar spacers 152, 154, 156, 158 have a length greater than the thickness of the siding board, and their longitudinal axes are parallel to each other. The mounting bracket 10 shown in Figure 5 (A) also has through holes that penetrate each columnar spacer and the base plate 16, and the columnar spacers 152, 154, 156, 158 and each through hole are on the same axis as the four openings provided in the support portion 21 of the load 20.

The mounting bracket 10 shown in FIG. 5(A) can be used to fix a load 20 to the framework 50 without the mounting bracket 10 coming into contact with the siding board 40 by drilling four holes in the siding board 40 and inserting columnar spacers until they abut the framework 50.

Figure 5(B) shows the case where the mounting bracket 10 is composed of rectangular columnar spacers 162, 164 and a base plate 16. Figure 5(C) shows the case where the mounting bracket 10 is composed of columnar spacers 172, 174 with a gutter-shaped cross section and a base plate 16. The columnar spacers 162, 164 and columnar spacers 172, 174 shown in Figures 5(B) and 5(C) each have a length greater than the thickness of the siding board, and their longitudinal axes are parallel to each other. In addition, the mounting bracket 10 shown in Figures 5(B) and 5(C) has through holes that penetrate each columnar spacer and the base plate 16, and the columnar spacers 162, 164 and columnar spacers 172, 174 and each through hole are on the same axis as the opening provided in the support portion 21 of the load 20.

The mounting bracket 10 shown in Figures 5(B) and 5(C) can be used to secure a load 20 to the framework 50 without the mounting bracket 10 coming into contact with the siding board 40 by drilling two holes of appropriate size in the siding board 40 and inserting a columnar spacer until it abuts against the framework 50.

The above describes the mounting fixture and mounting method for a load on a siding exterior wall of the present invention through the embodiment example and its modified examples. The present invention is not limited to the described embodiment and modified examples, and various modifications can be made within the scope of the claims. Such modified forms are also included in the scope of the present invention.

10...mounting metal fitting, 12...first columnar spacer, 121...through hole, 122...one end, 123...other end, 14...second columnar spacer, 141...through hole, 142...one end, 143...other end, 16...base plate, 20...load, 21...support part, 22, 23...opening, 24...load body part, 32, 34...fixing bolt, 40...siding board, 41, 42...board, 50...skeleton material, 51...outer surface, 61...fastener, 62, 63...waterproof sealant, 152, 154, 156, 158, 162, 164, 172, 174...columnar spacer, L1, L2...longitudinal axis

Claims (2)

A mounting bracket for attaching a load to the exterior wall of a building to which siding boards are attached,
a plurality of columnar spacers having a length greater than a thickness of the siding board, the longitudinal axes of the columnar spacers being parallel to one another;
a base plate to which one ends of the plurality of columnar spacers are fixed and which sets the intervals between the longitudinal axes;
A mounting bracket having a through hole passing through each of the columnar spacers and the base plate along the longitudinal axis. A mounting method for mounting a load to an exterior wall of a building to which a siding board is attached, using a mounting bracket comprising a plurality of columnar spacers having a length greater than the thickness of the siding board, and a base plate for determining the arrangement of the plurality of columnar spacers, the mounting bracket having a plurality of through holes penetrating the columnar spacers and the base plate, the method comprising the steps of:
a first step of forming a plurality of holes in the siding board, the holes having a diameter larger than an outer diameter of the columnar spacer and penetrating the siding board in a thickness direction;
a second step of applying a waterproof sealant around the plurality of holes in the siding board;
a third step of inserting the columnar spacer into the holes in the siding board and abutting ends of the columnar spacer against a framework of a building;
A fourth step of fixing the load and the mounting fixture to a framework of a building through an opening in a load support portion that is a part of the load and through a through hole in the mounting fixture;
An installation method consisting of:

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