JP7650503B2 - Support angle mounting structure - Google Patents

Description

The present invention relates to a support angle mounting structure suitable for use with racks that can mount multiple devices on multiple levels, such as so-called 19-inch racks.

The rack R shown in Figure 1 corresponds to a rack mount that allows devices with various functions to be stacked and mounted, and has four mounting frames 1 (1A-1D) extending vertically. In this rack R, as shown in Figure 8, a device (rack-mounted electronic device, etc.) 2 is inserted from the front and fixed to the front mounting frames 1A, 1B, for example by screwing, and the fixed device 2 is held horizontally. Each mounting frame 1 has multiple holes 3 spaced apart vertically for fixing the device 2 so that the holding height of the device 2 can be changed.

In such a rack R, for example, if the equipment 2 to be stored is heavy or deep, support angles (not shown) are attached across the front and rear mount frames 1 (1A and 1C, 1B and 1D) to support the equipment 2. In addition, for equipment that is not configured to be directly fixed to the mount frame 1, a shelf is attached to the support angle and the equipment is placed on the shelf.

Conventionally, the support angle is attached to the mount frame 1 by tightening multiple screws and cage nuts using tools. However, this type of support angle attachment structure has the problem that it requires a lot of assembly work to attach the support angle, which takes a lot of time. Moreover, it is difficult for someone who does not use tools on a daily basis to perform the attachment work, and even for someone who is accustomed to using tools, it is extremely difficult to perform the attachment work alone using tools while holding the screws and the support angle in their hands at the same time, so in many cases the installation work needs to be done by multiple people. Furthermore, there is a risk that the screws will be lost during the installation work, or that the tools will interfere with the equipment 2, making the installation work more difficult.

The present invention was made with the above in mind, and its purpose is to provide a support angle mounting structure that eliminates the need for tools and makes the installation process easier.

In order to achieve the above object, the mounting structure for a support angle according to the present invention is a mounting structure for a support angle that uses a fixing device to prevent the claw of the support angle from being released from engagement with a specific location on the mount frame. With the claw of the support angle engaged with the specific location on the mount frame, an engagement protrusion on the fixing device is inserted into both the support hole of the mount frame and the supported hole of the support angle, which are mutually connected, and an elastic engagement piece provided on the fixing device separately from the engagement protrusion is elastically engaged with the support angle, so that the engagement protrusion comes into engagement with the edge of the support hole, thereby entering a locked state that prevents the support angle from moving in the direction in which the engagement is released (Claim 1).

In the above-mentioned support angle mounting structure, the support angle may have a plurality of claws corresponding to at least one of the mount frames, and any claw may be selected to engage with a specific location of the mount frame to achieve the locked state (Claim 2).

In the mounting structure of the support angle, in addition to the engaging protrusion and the elastic engaging piece, one of a recess and a protrusion that fit together when the locking state is established may be provided on the support angle, and the other on the fixing device (Claim 3).

In the above support angle mounting structure, the support angle may be a metal member, the claw may be formed by cutting out a part of the support angle, and the supported hole may be a hole formed in the support angle by this cutting out (Claim 4).

The present invention provides a support angle mounting structure that eliminates the need for tools and makes the installation process easier.

In other words, in the support angle mounting structure of the invention according to each claim of this application, the support angle can be stably mounted to the mount frame by engaging the claws of the support angle with specific locations on the mount frame, inserting the engagement protrusions of the fixture into the support holes and supported holes, and elastically engaging the elastic engagement pieces with the support angle. Each step can be easily performed with roughly one touch without the need for tools.

For example, when attaching one support angle across two mount frames that are located apart, if there is only one claw for each mount frame (i.e., if the support angle has a total of two claws), the support angle cannot be attached unless the distance between the two mount frames is standardized. However, in the support angle attachment structure of the invention of claim 2, since there are multiple claws corresponding to at least one mount frame, the distance between the two mount frames can be set to multiple values, and the degree of freedom in setting the position of the mount frames can be increased.

In the support angle mounting structure of the invention according to claim 3, the support angle and the fixing device engage with each other in a concave-convex manner when the support angle is locked. This allows the elastic engagement piece to elastically engage with the support angle, making the elastic engagement smoother. The concave-convex engagement also makes the position of the fixing device more stable in the locked state, making it possible to more effectively prevent the support angle from moving in the direction in which the lock is released.

In the support angle mounting structure of the invention according to claim 4, the supported hole can be formed in the process of forming the claws on the support angle, and there is no need to use a separate member to provide the claws, which simplifies the structure and reduces manufacturing man-hours and costs.

1 is a perspective view of a rack to which a mounting structure for a support angle according to an embodiment of the present invention is applied; FIG. 2 is a perspective view of the rack with the mounting structure for the support angle provided. FIG. 3 is a perspective view of a main part of the rack shown in FIG. 2 . 1A and 1B are perspective views of a fixing device of the mounting structure of the support angle as viewed from one side and the other side, and 1C and 1D are perspective views of a support angle of the mounting structure of the support angle as viewed from one side and the other side. 1A is an explanatory diagram of step (1) of the method for mounting a support angle using the mounting structure for the support angle, and FIG. 1B and FIG. 1C are explanatory diagrams of step (2) of the same method. 4(A) to 4(D) are explanatory diagrams of step (3) of the method for installing the support angle. 13A and 13B are enlarged perspective views of the essential parts of a modified example of the support angle and an explanatory diagram of a mounting method thereof. 2 is a perspective view showing a main part of the rack with equipment fixed to a front mounting frame. FIG. 13A to 13C are explanatory diagrams of modified examples of the mounting structure of the support angle.

The following describes an embodiment of the present invention.

As is clear from comparing Figures 1 and 2, the rack R shown in Figures 1 and 2 has a support angle mounting structure that allows support angles 4 to be attached across two mounting frames 1 (1A and 1C or 1B and 1D) that are spaced apart from each other in the front and rear.

The mount frame 1 is a bent plate-like member made of metal, for example, that is mounted at four locations on the rack R: the front right, front left, rear right, and rear left. It is a component of the rack R.

As shown in FIG. 3, the mount frame 1A located at the right front of the rack R has a shape in which an outer bent portion 5 having a large L-shape in plan view is connected to an inner bent portion 6 having a small L-shape in plan view. The outer bent portion 5 is composed of a first outer side surface portion 5a facing the outer side in the front-rear direction of the rack R and extending in the left-right direction of the rack R, and a second outer side surface portion 5b facing the outer side in the left-right direction of the rack R and extending in the front-rear direction of the rack R, and the inner bent portion 6 is composed of a first inner side surface portion 6a extending in the left-right direction of the rack R, and a second inner side surface portion 6b extending in the front-rear direction of the rack R. Here, the first inner side surface portion 6a is shorter than the first outer side surface portion 5a, and the second inner side surface portion 6b is shorter than the second outer side surface portion 5b in plan view, extends approximately parallel to the first outer side surface portion 5a, and is located inside the rack R (inside in the front-rear direction and left-right direction of the rack R). The other mount frames 1B to 1D have the same structure as mount frame 1A.

The first outer surface portion 5a of each mount frame 1 has a plurality of holes (through holes) 3 spaced apart in the vertical direction for fixing the device 2 (see FIG. 8).

Meanwhile, the support angle 4 is, for example, a metal L-shaped member used to support the lower part of the equipment 2 fixed to the mount frame 1 or to attach a shelf. The support angle 4 in this example has a vertical surface portion 7 that extends approximately vertically along the inner surface side of each of the second inner side portions 6b of the two mount frames 1 (1A and 1C or 1B and 1D) that are positioned separately in the front and rear, and a horizontal surface portion 8 that extends approximately horizontally from one end (the lower end in the illustrated example) of the vertical surface portion 7 toward the inside of the rack R.

Below, we will explain the method of mounting the support angle 4 using the mounting structure of this example, and also provide a more detailed explanation of the configuration of the mount frame 1 and the support angle 4. This mounting method involves carrying out the following steps (1) to (3).

(1) As shown in Fig. 5(A), the claw 9A provided on the vertical surface portion 7 of the support angle 4 is inserted into a square hole (an example of a through hole) 10A provided on the second inner side surface portion 6b of the mount frame 1, and is engaged with the edge of this square hole 10A (an example of a specific location of the mount frame) (see Fig. 5(C)). This engagement causes the irregular square hole 11 located one level below the square hole 10A into which the claw 9A is inserted on the second inner side surface portion 6b of the mount frame 1 to communicate with the square hole 12A (an example of a supported hole) provided on the vertical surface portion 7 of the support angle 4 so as to be connected to the claw 9A (see Fig. 5(B)).

As shown in Figures 4(C) and (D), the claws 9A are provided at both ends of the vertical surface portion 7 of the support angle 4 in the longitudinal direction, and protrude in the opposite direction to the extension of the horizontal surface portion 8 from the vertical surface portion 7. In this example, the support angle 4 is a metal member, the claws 9A are formed by cutting out a part of the support angle 4 (its vertical surface portion 7), and the square hole 12A is a hole formed in the support angle 4 (its vertical surface portion 7) by this cutting out. Therefore, the square hole 12A can also be formed in the process of forming the claws 9A on the support angle 4, and there is no need to use a separate member to provide the claws 9A, which simplifies the configuration and reduces manufacturing labor and costs.

As shown in FIG. 5A, the square hole 10A is a hole located one level above the irregular square hole (an example of a support hole) 11, and the irregular square hole 11, the square hole 10A located one level above it, and the square hole (an example of a through hole) 10B located one level below the irregular square hole 11 form one through hole group G, and this through hole group G is lined up in the longitudinal direction (up and down direction) of the second inner side surface portion 6b of the mount frame 1. In detail, the square hole 10A is a square or rectangular through hole, the square hole 10B is a through hole with the same structure as the square hole 10A, and the irregular square hole 11 is a through hole with a notch for marking on the left and right edges of the square or rectangular hole. In each through hole group G, the distance from the irregular square hole 11 to the square hole 10A is the same as the distance from the square hole 10B to the square hole 10A. In addition, the distance between adjacent through hole groups G (the distance from the square hole 10A of the lower through hole group G to the square hole 10B of the upper through hole group G) is uniform, and in this example, the distance between adjacent through hole groups G is made smaller than the distance from the irregular square hole 11 in each through hole group G to the square holes 10A and 10B above and below it.

(2) Insert the engagement protrusion 14 of the fastener 13 into both the irregular square hole 11 and the square hole 12A that are now connected to each other in the above step (1) (see Figures 5 (B) and (C)).

The fixing device 13 is, for example, a member made of synthetic resin, and has a body portion 15 that is generally in the shape of a long plate as a whole, as shown in Figures 4(A) and (B). If the side of the body portion 15 shown in Figure 4(A) is the front side, and the side shown in Figure 4(B) is the rear side, the periphery of the rear surface of the body portion 15 protrudes rearward, and the periphery of the body portion 15 is thicker than the center portion.

In addition, an engagement protrusion 14 extends from one longitudinal end of the rear surface of the main body 15 so as to protrude rearward and longitudinally outward (away from the other longitudinal end). The engagement protrusion 14 has a roughly square cylindrical base 14a that protrudes rearward from the rear surface of the main body 15, and a tip 14b that extends longitudinally outward from the rear end of the base 14a, and the vertical center on the rear side of the tip 14b is cut out by a notch groove 14c, except for its tip.

As shown in Figures 5(B) and (C), the tip 14b has a shape or size that prevents it from being inserted into the irregular square hole 11 of the mount frame 1 that communicates with the square hole 12A of the support angle 4, even if the fixing device 13 is brought close while the main body 15 is kept approximately parallel to the second inner surface portion 6b of the mount frame 1. However, as shown in Figure 6(A), the tip 14b is configured so that it can be inserted by making the longitudinal direction of the main body 15 somewhat oblique to the second inner surface portion 6b.

(3) While the engagement protrusion 14 of the fixing device 13 inserted into the irregular square hole 11 of the mount frame 1 in the above step (2) is kept from falling out of the irregular square hole 11, as shown in FIG. 6(A), the fixing device 13 is rotated around the vertical axis so that the longitudinal direction of the main body part 15, which is inclined relative to the second inner side surface part 6b, becomes parallel to the second inner side surface part 6b. Then, the elastic engagement piece 16 provided on the opposite side of the fixing device 13 to the engagement protrusion 14 in the longitudinal direction eventually elastically engages with the edge of the longitudinal end of the support angle 4 (see FIG. 6(B) to (D)). As a result, the engagement protrusion 14 engages and abuts against the edge of the irregular square hole 11, and a locked state is created in which the movement of the support angle 4 in the direction in which the locking related to the above step (1) is released is suppressed. In order to enable the fixing device 13 to rotate as described above while the engagement protrusion 14 is inserted into the irregular square hole 11, appropriate portions of the engagement protrusion 14 are chamfered, etc.

As shown in FIG. 4(B), the elastic engagement piece 16 is a generally L-shaped portion in plan view that protrudes rearward and inward in the longitudinal direction (toward one longitudinal end) from the other longitudinal end side of the rear surface of the main body 15 of the fixing device 13. Specifically, it has a generally thin plate-like base 16a that protrudes rearward from the rear surface of the main body 15, and a tip 16b that extends from the rear end of the base 16a toward the longitudinal inward direction of the main body 15. The base 16a of the elastic engagement piece 16 is configured to be thinner than the base 14a of the engagement projection 14 so as to be elastically deformable.

To release the locked state, as shown in Figures 4(A) and (B), the knob portion 20 of the fixture 13, which protrudes further toward the other end of the fixture 13 in the longitudinal direction than the elastic engagement piece 16, is pulled forward (in the direction in which the horizontal surface portion 7 extends) to release the elastic engagement of the elastic engagement piece 16 with the edge of the longitudinal end of the support angle 4. As shown in Figures 6(B) and (C), there is sufficient space around the knob portion 20 in the locked state to insert fingers, so this release operation can be easily performed.

As explained above, the mounting structure of the support angle in this example is configured to prevent the release of the engagement of the claw 9A of the support angle 4 with the edge of the square hole 10A of the mount frame 1 by the fixing device 13. When the claw 9A of the support angle 4 is engaged with the edge of the square hole 10A of the mount frame 1, the engagement protrusion 14 on the fixing device 13 is inserted into both the square hole 11 of the mount frame 1 and the square hole 12A of the support angle 4, which are connected to each other, and the elastic engagement piece 16 provided on the fixing device 13 separately from the engagement protrusion 14 is elastically engaged with the support angle 4, so that the engagement protrusion 14 abuts against the edge of the square hole 11, resulting in a locked state that prevents the support angle 4 from moving in the direction in which the engagement is released.

In the mounting structure for the support angle in this example, the support angle 4 can be stably mounted to the mount frame 1 by engaging the claw 9A of the support angle 4 with the edge of the square hole 10A of the mount frame 1, inserting the engagement protrusion 14 of the fastener 13 into the square holes 11 and 12A, and elastically engaging the elastic engagement piece 16 with the support angle 4. Each step can be easily performed with just one touch without the need for tools.

In this example, when the locking state is established in the step (3), the fitting protrusion (an example of a protrusion) 18 (see FIG. 4(B)) provided on the fixing device 13 is fitted into the oblong hole (an example of a recess) 17A (see FIGS. 4(C) and (D)) located on the outer side of the support angle 4 in the longitudinal direction with respect to the square hole 12A in the support angle 4 (see FIG. 6(B)). In this way, if the support angle 4 and the fixing device 13 are configured to be fitted into each other in a concave-convex manner when the locking state is established, the concave-convex fitting serves as a guide for elastically engaging the elastic engagement piece 16 with the support angle 4, so that the elastic engagement can be performed smoothly. In addition, the concave-convex fitting makes the posture of the fixing device 13 in the locked state more stable, and it is possible to more effectively suppress the movement of the support angle 4 in the direction in which the locking in the step (1) is released.

In addition, in this example, the support angle 4 has two claws 9 corresponding to one mount frame 1, as shown in Figures 4(C) and (D), and for each of the two claws 9A, a claw 9B is provided that is spaced apart on the inside longitudinal direction of the support angle 4, so that the support angle 4 can be locked by selecting either claw 9A or 9B to engage with the edge of the square hole 10A of the mount frame 1.

As shown in Fig. 4(C) and (D), the claws 9B are connected to the square holes 12B on the vertical surface 7 of the support angle 4, and the two claws 9B each have an oblong hole (an example of a recess) 17B and an opening 19 on the inside in the longitudinal direction of the support angle 4. After the claws 9B are selected and engaged with the edge of the square hole 10A of the mount frame 1, the engagement protrusion 14 of the fixing device 13 is inserted obliquely into the irregular square hole 11 that is inserted into the square hole 12B, and in this state, the fixing device 13 is rotated so that the elastic engagement piece 16 of the fixing device 13 elastically engages with the edge of the opening 19, and at this time, the engagement protrusion 18 of the fixing device 13 fits into the oblong hole 17B. The claws 9B, square holes 12B, and oblong holes 17B have the same configuration as the claws 9A, square holes 12A, and oblong holes 17A, respectively. Additionally, the size and shape of the opening 19 should be such that it does not prevent the knob portion 20 from being gripped with fingers when releasing the locked state.

For example, when attaching the support angle 4 across two mount frames 1A, 1C that are positioned at a distance from each other at the front and rear of the rack R, if there is only one claw 9 corresponding to each mount frame 1A, 1C (i.e., the support angle 4 has two claws 9 in total), the support angle 4 cannot be attached unless the distance between the two mount frames 1A, 1C is standardized. However, in this example, since there are two claws 9 corresponding to one mount frame 1, the distance between the two mount frames 1A, 1C can be set to multiple values, and the degree of freedom in setting the position of the mount frame 1 can be increased.

As is clear from the above description, among the square holes 10A, 10B and irregular square holes 11 that constitute the group of through holes G (see FIG. 5A), the square hole 10B is not used in this example, but if the mount frame 1 is turned upside down, the square hole 10B plays the same role as the square hole 10A. In other words, the mount frame 1 has a structure that is reversible up and down, and for example, the mount frame 1A installed on the right front of the rack R can be used not only as the mount frame 1D installed on the left rear, but also as the mount frame 1B installed on the left front and the mount frame 1C installed on the right rear. In addition, the support angle 4 also has a structure that is reversible between the front and rear of the rack R, and the support angle 4 that spans the mount frames 1A and 1C and the support angle 4 that spans the mount frames 1B and 1D can be the same.

As shown in FIG. 3, fixing holes 21 are provided at both longitudinal ends of the vertical surface portion 7 of the support angle 4, which can be used to fix the support angle 4 to the mount frame 1 or to fix a shelf or the like to the support angle 4. In addition, a plurality of through holes 22 are provided at intervals along the entire longitudinal direction of the horizontal surface portion 8 of the support angle 4, which can be used to pass cables connected to the equipment 2, to pass ties (such as bands) for bundling cables, or to fix a shelf.

The present invention is not limited to the above embodiment, and can be modified in various ways without departing from the spirit of the present invention. For example, the following modifications can be mentioned:

In the above embodiment, as shown in FIG. 3, for example, the horizontal surface portion 8 is connected to the lower side of the vertical surface portion 7, which has the advantage of reducing the dead space that occurs below the support angle 4 that is attached to the lowest part of the rack R. However, this is not limited to this, and for example, the horizontal surface portion 8 may be connected to the upper side of the vertical surface portion 7.

In the above embodiment, two claws 9 correspond to one mount frame 1, but this is not limiting, and only one claw 9 may correspond to one mount frame 1, or conversely, three or more claws 9 may be provided to correspond to one mount frame 1, and any one of the claws 9 may be selected to engage with a specific location on the mount frame 1 to achieve the locked state.

In the above embodiment, for example, as shown in FIG. 5(A), the claw 9A extends so as to hang down from the upper edge of the square hole 12A, but this is not limited thereto, and for example, as shown in FIG. 7(A), the claw 9A may extend so as to hang down from the lower edge of the square hole 12A (similar to the claw 9B).

In this case, as shown in FIG. 7B, in the above step (1), the claw 9A is inserted into the retaining hole (square hole 11 in the illustrated example), and in the above step (2), the engagement protrusion 14 of the fastener 13 is inserted into the retaining hole (square hole 11). Alternatively, in the above step (1), the claw 9A is inserted into the irregular square hole 11 one below the retaining hole (for example, square hole 10A), and when the claw 9A is engaged with the edge of the irregular square hole 11, the vertical dimension of the square hole 12A is made somewhat large (and in some cases the vertical dimension of the vertical surface portion 7 is also made somewhat large) so that the square hole 12 is in a state of communicating with both the irregular square hole 11 and the square hole 10 one above it, so that in the above step (2), the engagement protrusion 14 of the fastener 13 can be inserted into the retaining hole (square hole 10A) one above the irregular square hole 11 into which the claw 9A is inserted.

In this way, in the mount frame 1 (the second inner side surface portion 6b), the hole into which the claw 9A is inserted and engaged and the hole into which the engagement protrusion 14 of the fastener 13 is inserted and engaged may be the same or different. Furthermore, in the above embodiment, the square hole 12A connected to the claw 9A is used as the supported hole (hole for communicating with the support hole), but a separate hole not connected to the claw 9A may be provided and used as the supported hole.

In the above embodiment, the support angle 4 is provided with an oblong hole 17A (see Figs. 4C and 4D) as a recess, and the fixing device 13 is provided with an engagement protrusion 18 (see Fig. 4B) as a protrusion, so that the two can be fitted together. However, this is not limiting, and the support angle 4 may be provided with a protrusion and the fixing device 13 with a recess, so that the two can be fitted together.

In the above embodiment, as shown in FIG. 4(D), the claws 9 (9A, 9B) provided on both ends of the vertical surface portion 7 of the support angle 4 in the longitudinal direction both extend downward. However, this is not limited to this. For example, as shown in FIG. 9(A), the claws 9 (9A, 9B) provided on one end of the vertical surface portion 7 of the support angle 4 in the longitudinal direction may extend downward, and the claws 23 (23A, 23B) provided on the other end may extend sideways (outward in the longitudinal direction of the vertical surface portion 7 in the illustrated example, but may also extend in the opposite direction).

To attach the support angle 4 shown in FIG. 9(A) to two mount frames 1 separated from each other in the front and rear, as shown in FIG. 9(B), the claw 23 (e.g., claw 23A) is inserted sideways into the irregular square hole 11 of one of the mount frames 1 and engaged with its edge, and then the claw 9 (e.g., claw 9A) is engaged with the other mount frame 1, and the fixing device 13 is attached so as to be in a locked state that prevents the claw 9 from being released (see FIG. 9(C)). In other words, when the claw 23 is inserted into one of the mount frames 1 and engaged with its edge, and then the claw 9 is engaged with the other mount frame 1, the claw 23 is in a locked state that prevents it from moving in the direction of coming out of the one mount frame 1, so there is no need to use the fixing device 13 to prevent the claw 23 from being released. The claw 9 can be engaged with the other mount frame 1 and the fixing device 13 can be attached by the method shown in FIG. 5(A)-(C) and FIG. 6(A)-(D) described in the above embodiment.

It goes without saying that the above modifications may be combined as appropriate.

1 Mount frame (1A to 1D)
2 Equipment 3 Hole 4 Support angle 5 Outside bent part 5a First outside part 5b Second outside part 6 Inside bent part 6a First inside part 6b Second inside part 7 Vertical part 8 Horizontal part 9 Claws (9A, 9B)
10A Square hole 10B Square hole 11 Irregular square hole 12 Square hole (12A, 12B)
13 Fixing tool 14 Engagement projection 14a Base portion 14b Tip portion 14c Notch groove 15 Body portion 16 Elastic engagement piece 16a Base portion 16b Tip portion 17 Elongated hole (17A, 17B)
18 Fitting protrusion 19 Opening 20 Handle portion 21 Fixing hole 22 Through hole 23 Claws (23A, 23B)
G Through holes R Rack

Claims (4)

A mounting structure for a support angle that uses a fixing device to prevent the release of a claw of the support angle from being engaged with a specific portion of a mount frame,
A mounting structure for a support angle, characterized in that, with the claws of the support angle engaged with specific locations on the mount frame, an engagement protrusion on the fixing device is inserted into both the support hole of the mount frame and the supported hole of the support angle, which are connected to each other, and an elastic engagement piece provided on the fixing device separately from the engagement protrusion is elastically engaged with the support angle, so that the engagement protrusion engages and abuts against the edge of the support hole, entering a locked state that prevents the support angle from moving in the direction in which the engagement is released. The support angle mounting structure according to claim 1, wherein the support angle has a plurality of claws corresponding to at least one of the mount frames, and the locked state can be achieved by selecting any one of the claws and engaging it with a specific location on the mount frame. The support angle mounting structure according to claim 1 or 2, in which, in addition to the engagement protrusion and the elastic engagement piece, one of a recess and a protrusion that fit together when the locking state is established is provided on the support angle, and the other is provided on the fixing device. The support angle is a metal member, the claw is formed by cutting and raising a part of the support angle, and the supported hole is a hole formed in the support angle by this cutting and raising. The mounting structure for the support angle according to any one of claims 1 to 3.