JP7550977B2 - Suspension and mounting structure - Google Patents

Description

The present disclosure relates to a hanging device and mounting structure.

There is a known indoor unit that is embedded in the ceiling and attached to the ceiling. For example, Patent Document 1 describes a structure in which an indoor unit is attached to a ceiling-hanging member made of four rod-shaped angle members connected to a rectangular frame by means of a hanging bolt.

JP 2017-146063 A

In the above-mentioned structure, the ceiling-hanging member is placed above the indoor unit. This means that the combined vertical dimension of the ceiling-hanging member and the indoor unit tends to be large. This means that if the height of the ceiling space where the indoor unit is installed is relatively small, the indoor unit body may protrude from the ceiling space into the room. This can lead to problems such as the need to install a cover to cover the protruding part of the indoor unit body, or the need to change the installation location of the indoor unit.

This disclosure has been made to solve the problems described above, and aims to provide a hanging device and mounting structure that enables an indoor unit to be mounted to a ceiling while preventing the indoor unit body from protruding from above the ceiling.

One aspect of a hanger according to the present disclosure is a hanger for fixing an indoor unit to a ceiling, the hanger comprising: a hanger main body fixed to a frame member that is frame-shaped in a plan view and is fixed to the ceiling; and a flange portion that bends and protrudes from an outer edge of the hanger main body and extends along the outer edge of the hanger main body, the hanger main body having a first bolt hole through which a fixing bolt is passed for fixing the frame member and the hanger main body, and a second bolt hole through which a hanging bolt is passed for fixing the indoor unit and the hanger main body, and the portion of the hanger main body in which the second bolt hole is provided When the hoisting device main body is fixed to the frame member, the flange portion is located inside the frame member in a plan view , extends in a direction from the first bolt hole toward the second bolt hole, and is provided in a pair on either side of the first bolt hole, the flange portion is not provided on the outer edge of the hoisting device main body in a direction perpendicular to the direction in which the pair of flange portions sandwich the first bolt hole, and the portion of the hoisting device main body where the second bolt hole is provided is located farther from the first bolt hole than the pair of flange portions .

One aspect of the mounting structure disclosed herein is a mounting structure for mounting an indoor unit to a ceiling, comprising a frame member that is frame-shaped in a plan view and is fixed to the ceiling, the above-mentioned hanging device fixed to the frame member, a fixing bolt that is passed through the first bolt hole and fixes the frame member to the hanging device main body, and a hanging bolt that is passed through the second bolt hole and fixes the indoor unit to the hanging device main body.

According to the present disclosure, the indoor unit can be mounted to the ceiling while preventing the indoor unit body from protruding from above the ceiling.

1 is a perspective view showing a mounting structure and an indoor unit mounted by the mounting structure according to an embodiment. 1 is a diagram showing a mounting structure and an indoor unit according to an embodiment as viewed in a first horizontal direction. FIG. 2 is a diagram showing the mounting structure and the indoor unit according to the embodiment as viewed from above. 3 is a diagram showing a part of the indoor unit mounted by the mounting structure in the embodiment, and is a partially enlarged view of FIG. 2 . FIG. FIG. 2 is a perspective view showing a mounting structure according to the embodiment. FIG. 6 is a perspective view showing a part of the mounting structure in the embodiment, which is a partially enlarged view of FIG. 5 . FIG. 2 is a perspective view showing a hanging tool according to an embodiment. 3 is a diagram showing a part of the mounting structure and a part of the indoor unit in the embodiment as viewed in a first horizontal direction, and is a partially enlarged view of FIG. 2. 13 is a view showing a part of the mounting structure and a part of the indoor unit in the embodiment as viewed in a second horizontal direction. FIG. 11A to 11C are diagrams illustrating a part of a procedure for fixing a fixing bolt and a hanging bolt to a hanging tool in the embodiment. 1 is a diagram of a conventional mounting structure and an indoor unit mounted by the conventional mounting structure, viewed in a first horizontal direction.

Below, an embodiment of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiment, and can be modified as desired within the scope of the technical ideas of the present disclosure. Also, in the following drawings, the scale and number of each structure may differ from the scale and number of the actual structure in order to make each configuration easier to understand.

The drawings also show the X-axis, Y-axis, and Z-axis as appropriate. The X-axis indicates one of the horizontal directions. The Y-axis indicates the other of the horizontal directions. The Z-axis indicates the vertical direction. In the following description, the horizontal direction along the X-axis is called the "first horizontal direction X," and the horizontal direction along the Y-axis is called the "second horizontal direction Y." The first horizontal direction X, the second horizontal direction Y, and the vertical direction are mutually perpendicular. The side of the vertical direction toward which the Z-axis arrow points (the +Z side) is the upper side, and the side of the vertical direction opposite to the side toward which the Z-axis arrow points (the -Z side) is the lower side.

Figure 1 is a perspective view showing a mounting structure 10 in this embodiment and an indoor unit 20 mounted by the mounting structure 10. Figure 2 is a view of the mounting structure 10 and the indoor unit 20 in the first horizontal direction X. Figure 3 is a view of the mounting structure 10 and the indoor unit 20 from above. Figure 4 is a view showing a portion of the indoor unit 20, and is a partially enlarged view of Figure 2.

Unless otherwise specified, the relative positional relationships of each part described below are the relative positional relationships of each part when the indoor unit 20 is attached by the mounting structure 10. Furthermore, in this specification, "plan view" means that an object is viewed from above in the vertical direction when the indoor unit 20 is attached by the mounting structure 10.

The indoor unit 20 shown in Figures 1 to 3 is an indoor unit of an air conditioner. As shown in Figures 1 and 2, the indoor unit 20 is attached to the ceiling C by the mounting structure 10. As shown in Figure 2, the ceiling C is a double ceiling having a ceiling slab CS and a ceiling plate CB arranged below the ceiling slab CS with a gap therebelow. The ceiling slab CS is a structure such as a slab or beam on the upper floor. The ceiling slab CS has a fixing surface CSa facing downward. The ceiling plate CB is a plate-like plate with a plate surface facing vertically. The lower surface of the ceiling plate CB faces the room. In this embodiment, the ceiling plate CB is configured by attaching wallpaper CB2 such as vinyl cloth to the lower surface of a ceiling plate main body CB1 such as gypsum board.

Hereinafter, the space provided vertically between the ceiling slab CS and the ceiling plate CB will be referred to as the ceiling space CA. The height of the ceiling space CA shown in Figure 2 is a relatively small height H1. The height H1 of the ceiling space CA is the vertical distance between the fixed surface CSa of the ceiling slab CS and the upper surface of the ceiling plate CB.

The indoor unit 20 is a ceiling-embedded indoor unit that is embedded in the ceiling space CA. The indoor unit 20 includes an indoor unit body 21, a decorative panel 22, and a fixing device 23. The indoor unit body 21 is a generally rectangular prism that is flat in the vertical direction. The indoor unit body 21 has a side surface 21x along the first horizontal direction X and a side surface 21y along the second horizontal direction Y. As shown in FIG. 3, the indoor unit body 21 is generally rectangular in plan view with chamfered corners. In other words, the indoor unit body 21 is generally octagonal in plan view. The indoor unit body 21 has an inclined surface 21a at each of the four corners. The inclined surface 21a faces a direction that is inclined at 45° with respect to both the first horizontal direction X and the second horizontal direction Y.

As shown in FIG. 2, the indoor unit body 21 is embedded in the attic space CA. The lower end of the indoor unit body 21 is disposed in a through hole CBa provided in the ceiling plate CB. The through hole CBa penetrates the ceiling plate CB in the vertical direction. In a plan view, the through hole CBa is a square shape that is larger than the outer shape of the indoor unit body 21.

A decorative panel 22 is attached to the lower end of the indoor unit body 21. The decorative panel 22 is a square plate with a plate surface facing vertically and sides along the first horizontal direction X and the second horizontal direction Y. The decorative panel 22 is arranged indoors. In a plan view, the outer peripheral edge of the decorative panel 22 protrudes outward beyond the indoor unit body 21. The outer peripheral edge of the decorative panel 22 is in contact with the underside of the ceiling plate CB.

The fixing device 23 is a metal fitting to which the hanging bolt 50 described later is fixed. The fixing device 23 is fixed to the side of the indoor unit body 21. The fixing device 23 is located in the ceiling CA. As shown in FIG. 3, the fixing device 23 is fixed to each of the four inclined surfaces 21a. As shown in FIG. 4, the fixing device 23 has a base 23a fixed to the inclined surface 21a with a bolt and a protruding portion 23b protruding from the upper end of the base 23a in a direction away from the inclined surface 21a. The protruding portion 23b is a plate-like member with a plate surface facing vertically. Although not shown in the figure, the protruding portion 23b has a through portion through which the hanging bolt 50 is passed vertically.

The mounting structure 10 is a mounting structure for mounting the indoor unit 20 to a ceiling C. FIG. 5 is a perspective view showing the mounting structure 10. FIG. 6 is a perspective view showing a portion of the mounting structure 10, and is a partially enlarged view of FIG. 5. As shown in FIG. 5 and FIG. 6, the mounting structure 10 comprises a frame member 30, a hanging device 40, a hanging bolt 50, and a fixing bolt 61.

As shown in FIG. 5, the frame member 30 is a frame-shaped member in a plan view. In this embodiment, the frame member 30 is a square frame. The frame member 30 has a pair of first support members 31 and a pair of second support members 32. The pair of first support members 31 extend in the first horizontal direction X. The pair of first support members 31 are arranged at an interval in the second horizontal direction Y. The pair of second support members 32 extend in the second horizontal direction Y. The pair of second support members 32 are arranged at an interval in the first horizontal direction X. The pair of second support members 32 are located above the pair of first support members 31. Each of one end portions of the pair of second support members 32 in the second horizontal direction Y is fixed above each of both ends of one of the first support members 31 in the first horizontal direction X. The other ends of the pair of second support members 32 in the second horizontal direction Y are fixed above both end portions of the other first support member 31 in the first horizontal direction X, respectively.

In this embodiment, the first support member 31 and the second support member 32 are C-shaped channel steels having grooves that open downward. As shown in FIG. 6, the first support member 31 has a groove 31a extending in the first horizontal direction X. The second support member 32 has a groove 32a extending in the second horizontal direction Y. The grooves 31a and 32a open downward. As shown in FIG. 3, the upper wall of the first support member 31 has a long hole 31b that is long in the first horizontal direction X. A plurality of long holes 31b are provided along the first horizontal direction X. The upper wall of the second support member 32 has a long hole 32b that is long in the second horizontal direction Y. A plurality of long holes 32b are provided along the second horizontal direction Y.

As shown in FIG. 2, the frame member 30 is fixed to the ceiling C. In this embodiment, the frame member 30 is fixed to the ceiling slab CS by bolts 60 extending vertically. Four bolts 60 are provided. Each bolt 60 fixes each corner of the square frame-shaped frame member 30 to the fixing surface CSa of the ceiling slab CS. At least a part of the indoor unit 20 is inserted inside the frame member 30. In this embodiment, the upper end of the indoor unit main body 21 is inserted inside the frame member 30.

The suspender 40 is a suspender for fixing the indoor unit 20 to the ceiling C. In this embodiment, the suspender 40 is a member made by performing machining such as pressing on a metal plate member. As shown in FIG. 5, the suspender 40 is fixed to the frame member 30. More specifically, two suspenders 40 are fixed to each of a pair of first support members 31. That is, in this embodiment, a total of four suspenders 40 are provided. The two suspenders 40 provided on each first support member 31 are arranged with a gap in the first horizontal direction X. The suspender 40 fixed to one first support member 31 and the suspender 40 fixed to the other first support member 31 are fixed in an inverted orientation in the second horizontal direction Y. Each suspender 40 has the same configuration except that the positions and orientations at which they are fixed to the frame member 30 are different. In the following description of the suspender 40, the suspender 40 fixed to the first support member 31 located on one side (+Y side) in the second horizontal direction Y will be described as a representative of the various suspenders 40.

Figure 7 is a perspective view showing the sling 40. As shown in Figure 7, the sling 40 has a sling body 41 and a pair of flanges 42, 43. The sling body 41 is plate-shaped with a plate surface facing the vertical direction. In this embodiment, the sling body 41 is approximately triangular in plan view. As shown in Figure 6, in this embodiment, the sling body 41 is fixed to the underside of the frame member 30. More specifically, the sling body 41 is fixed to the underside of the first support member 31 of the frame member 30. The sling body 41 extends from the first support member 31 toward the inward side of the frame member 30, i.e., toward the -Y side in Figure 6.

Hereinafter, the portion of the sling body 41 that is located below the first support member 31 will be referred to as the fixed portion 41a, and the portion that protrudes further inwardly into the frame member 30 than the first support member 31 will be referred to as the protruding portion 41b. The fixed portion 41a is fixed to the first support member 31. The protruding portion 41b is located inside the frame member 30 in a plan view.

7, the sling body 41 has a first bolt hole 44 and a second bolt hole 45. The first bolt hole 44 and the second bolt hole 45 are circular holes that penetrate the sling body 41 in the vertical direction. The first bolt hole 44 is provided in the fixed portion 41a. The second bolt hole 45 is provided at the tip of the protruding portion 41b. A plurality of first bolt holes 44 are provided. In this embodiment, the first bolt holes 44 are provided in two spaces apart in the longitudinal direction of the first support member 31 to which the sling 40 is fixed, i.e., in the first horizontal direction X. A fixing bolt 61 for fixing the frame member 30 and the sling body 41 is passed through the first bolt hole 44. In this embodiment, only one second bolt hole 45 is provided for the sling body 41. A hanging bolt 50 for fixing the indoor unit 20 and the hanging tool main body 41 is passed through the second bolt hole 45 .

The width of the sling body 41 in plan view decreases from the portion where the first bolt hole 44 is provided to the portion where the second bolt hole 45 is provided. The width of the sling body 41 in plan view is, for example, the dimension of the sling body 41 in the first horizontal direction X. One outer edge 41c of the outer edges of the sling body 41 in the first horizontal direction X extends in the second horizontal direction Y. The other outer edge 41d of the outer edges of the sling body 41 in the first horizontal direction X extends in a direction inclined obliquely to the first horizontal direction X with respect to the second horizontal direction Y.

6, the portion of the hanging tool main body 41 where the second bolt hole 45 is provided is located inside the frame member 30 in a plan view when the hanging tool main body 41 is fixed to the frame member 30. The portion of the hanging tool main body 41 where the second bolt hole 45 is provided is located in a position that overlaps, in a plan view, with a portion of the fixing tool 23 of the indoor unit 20 where a through-hole through which the hanging bolt 50 is passed is provided.

As shown in Figure 7, the pair of flange portions 42, 43 bend downward and protrude from the outer edge portions 41c, 41d of the sling body portion 41. The flange portion 42 is provided on the outer edge portion 41c. The flange portion 43 is provided on the outer edge portion 41d. The pair of flange portions 42, 43 are plate-shaped with plate surfaces along the vertical direction. The pair of flange portions 42, 43 are arranged with a gap in the first horizontal direction X. The pair of flange portions 42, 43 sandwich the first bolt hole 44 in the first horizontal direction X.

The pair of flanges 42, 43 extend along the outer edge portions 41c, 41d of the hoist body 41. In this embodiment, the pair of flanges 42, 43 extend along a direction from the first bolt hole 44 toward the second bolt hole 45. The flange 42 extends along a direction from one of the first bolt holes 44 located on one side (+X side) of the first horizontal direction X toward the second bolt hole 45. In this embodiment, the flange 42 extends in the second horizontal direction Y. The flange 43 extends along a direction from one of the first bolt holes 44 located on the other side (-X side) of the first horizontal direction X toward the second bolt hole 45. In this embodiment, the flange 43 extends in a direction inclined obliquely in the first horizontal direction X with respect to the second horizontal direction Y. The flanges 42 and 43 approach each other in the first horizontal direction X as they approach the second bolt hole 45.

Each flange portion 42, 43 is provided only on a part of each outer edge portion 41c, 41d of the sling body 41. Each flange portion 42, 43 extends from the end of each outer edge portion 41c, 41d on the side (+Y side) closer to the first bolt hole 44 to a part of each outer edge portion 41c, 41d located between the first bolt hole 44 and the second bolt hole 45 in the second horizontal direction Y. As a result, the part of the sling body 41 where the second bolt hole 45 is provided is located farther from the first bolt hole 44 than the pair of flange portions 42, 43. The flange portion 42 is not provided on a part of the outer edge portion 41c closer to the second bolt hole 45. The flange portion 43 is not provided on a part of the outer edge portion 41d closer to the second bolt hole 45.

The fixing bolts 61 are bolts that extend vertically. Two fixing bolts 61 are provided for each hoisting device 40. In other words, a total of eight fixing bolts 61 are provided. In each hoisting device 40, the two fixing bolts 61 are passed vertically through the two first bolt holes 44. The fixing bolts 61 are bolts that fix the frame member 30 and the hoisting device main body 41. In this embodiment, the fixing bolts 61 fix the first support member 31 and the hoisting device main body 41.

Figure 8 is a view of a part of the mounting structure 10 and a part of the indoor unit 20 viewed in the first horizontal direction X, and is a partially enlarged view of Figure 2. Figure 9 is a view of a part of the mounting structure 10 and a part of the indoor unit 20 viewed in the second horizontal direction Y. Figure 10 is a diagram showing part of the procedure for fixing the fixing bolt 61 and the hanging bolt 50 to the hanging device 40.

As shown in FIG. 8, a cover member 33 is provided between the suspending tool main body 41 and the first support member 31, which are fixed by the fixing bolt 61, in the vertical direction. The cover member 33 is a plate-shaped member that covers the groove 31a of the first support member 31 from below. The cover member 33 has a through hole 33a through which the fixing bolt 61 is passed in the vertical direction. The upper surface of the cover member 33 is in contact with the lower end of the first support member 31. The lower surface of the cover member 33 is in contact with the upper surface of the suspending tool main body 41. The cover member 33 can stably support the suspending tool main body 41, and the suspending tool main body 41 can be stably fixed to the first support member 31. As shown in FIG. 9, a cover member 33 is provided for each of the fixing bolts 61.

8, the fixing bolt 61 is passed vertically through the groove 31a and the long hole 31b, penetrating the first support member 31 in the vertical direction. A fixing plate 63 having a female threaded hole 63a into which the fixing bolt 61 is fastened is attached to the portion of the fixing bolt 61 located inside the groove 31a. The fixing plate 63 is hooked from above on both edges in the second horizontal direction Y at the lower end of the first support member 31 inside the groove 31a.

A nut 62 is fastened to the fixing bolt 61. The nut 62 is located below the hoisting tool main body 41. The hoisting tool main body 41 and the lower end of the first support member 31 are clamped vertically via the cover member 33 by the fixing plate 63 fixed to the fixing bolt 61 and the nut 62, so that the hoisting tool main body 41 is fixed to the first support member 31 via the fixing bolt 61. As shown in FIG. 10, the nut 62 is fastened from below the hoisting tool main body 41 using a spanner S. As shown in FIG. 9, the lower end of the fixing bolt 61 protrudes downward from the hoisting tool 40. The upper end of the fixing bolt 61 is located at the same vertical position as the upper end of the frame member 30.

The hanging bolts 50 are bolts that extend vertically. Four hanging bolts 50 are provided. Each hanging bolt 50 is fixed to each hanging tool 40. Each hanging bolt 50 is passed vertically through the second bolt hole 45 of each hanging tool 40. The hanging bolts 50 are bolts that fix the indoor unit 20 and the hanging tool main body 41. In this embodiment, the hanging bolts 50 fix the fixing tool 23 and the hanging tool main body 41.

As shown in FIG. 8, the hanging bolt 50 is fixed to the hanging tool main body 41 by a pair of nuts 51a, 51b fastened to the hanging bolt 50. The nuts 51a, 51b are arranged to sandwich the hanging tool main body 41 in the vertical direction. The nut 51a is located below the hanging tool main body 41. The nut 51b is located above the hanging tool main body 41. The nut 51b is a double nut including two nuts. The portion of the hanging tool main body 41 where the second bolt hole 45 is provided is sandwiched vertically by the nuts 51a, 51b, thereby fixing the hanging bolt 50 to the hanging tool main body 41. As shown in FIG. 10, the nut 51a is fastened from below the hanging tool main body 41 using a wrench S.

The four hanging bolts 50 are fixed to the four fixing devices 23, respectively. As shown in FIG. 9, the hanging bolts 50 are fixed to the fixing device 23 of the indoor unit 20 by a pair of nuts 52 fastened to the hanging bolts 50. The pair of nuts 52 are arranged to sandwich the protruding portion 23b of the fixing device 23 in the vertical direction. The hanging bolts 50 are fixed to the fixing device 23 by sandwiching the protruding portion 23b vertically between the pair of nuts 52. In this way, the hanging bolts 50 are fixed to the indoor unit 20. The relative vertical positions of the hanging device main body 41 and the fixing device 23 can be adjusted by adjusting the vertical positions of the nuts 51a, 51b, and 52 relative to the hanging bolts 50.

The hanging bolt 50 extends downward further than the fixing bolt 61. As shown in FIG. 8, in this embodiment, the upper end of the hanging bolt 50 is located at the same vertical position as the upper end of the fixing bolt 61. The upper end of the hanging bolt 50 is located at the same vertical position as the upper end of the frame member 30.

A worker installing the indoor unit 20 using the mounting structure 10 first fixes the hanging device 40 and the hanging bolt 50 to the frame member 30. The worker fixes the frame member 30 with the hanging device 40 and the hanging bolt 50 attached to it to the ceiling slab CS. The worker tightens the nut 52 onto the hanging bolt 50 fixed to the ceiling slab CS via the frame member 30 to fix the indoor unit 20. Note that the hanging device 40 and the hanging bolt 50 may be fixed to the frame member 30 after the frame member 30 is fixed to the ceiling slab CS.

11 is a view of a conventional mounting structure 210 and an indoor unit 20 mounted by the conventional mounting structure 210, viewed in the first horizontal direction X. As shown in FIG. 11, the conventional mounting structure 210 includes a frame member 230 and a hanging bolt 250. The frame member 230 has a similar configuration to the frame member 30, except that the size of the frame formed by the first support member 31 and the second support member 32 is smaller than that of the frame member 30 in the above-mentioned embodiment. The frame member 230 is fixed to the ceiling slab CS by a plurality of bolts 260. The frame member 230 is located above the indoor unit 20. The hanging bolts 250 are directly fixed to each of the intersections of the frame member 230 where the first support member 31 and the second support member 32 overlap in the vertical direction. The hanging bolts 250 extend vertically to fix the frame member 230 and the fixture 23. The hanging bolt 250 protrudes upward beyond the frame member 230 .

As described above, in the conventional mounting structure 210, the hanging bolts 250 are fixed directly to the frame member 230. Therefore, when the horizontal position of each hanging bolt 250 is aligned with the horizontal position of the fixing device 23 of the indoor unit 20, the size of the frame of the frame member 230 tends to be smaller than the size of the indoor unit 20 in a plan view. This makes it impossible to place the indoor unit 20 inside the frame member 230, and it becomes necessary to place the frame member 230 higher than the indoor unit 20. Therefore, it becomes necessary to place the indoor unit 20 further downward from the ceiling slab CS by the amount that the frame member 230 is placed above.

In addition, in the conventional mounting structure 210, the hanging bolt 250 tends to protrude upward from the frame member 230. Therefore, in order to secure space for arranging the upper end of the hanging bolt 250, the frame member 230 must also be positioned downward from the ceiling slab CS to a certain extent. This creates a need to position the indoor unit 20 even further downward from the ceiling slab CS.

For the above reasons, when the height of the ceiling CA is a relatively small height H1, such as the ceiling C in the above-mentioned embodiment, the lower end of the indoor unit body 21 may protrude from the through hole CBa below the ceiling plate CB as shown in FIG. 11. In other words, a part of the indoor unit body 21 may protrude into the room. In this case, it becomes necessary to place a cover 270 that covers the outer periphery of the part of the indoor unit body 21 that protrudes into the room vertically between the ceiling plate CB and the decorative panel 22. In this case, the installation cost of the indoor unit 20 increases by the amount that the cover 270 needs to be installed, and the workability of installing the indoor unit 20 becomes worse. In addition, there is a problem that the appearance of the indoor unit 20 when viewed from inside the room becomes worse.

In addition, in cases where it is not possible to provide the cover 270, it may be necessary to change the installation location of the indoor unit 20. Specifically, it is necessary to change the installation location of the indoor unit 20 to a location where the height of the ceiling space CA is large enough to allow the ceiling board CB to be installed at the position shown by the two-dot chain line in Figure 11. The height of the ceiling space CA having the ceiling board CB shown by the two-dot chain line is height H2, which is greater than height H1.

In response to the above problems, according to the present embodiment, the mounting structure 10 is provided with a hanging tool main body 41 that is fixed to a frame member 30 that is fixed to the ceiling C and has a frame shape in a plan view. The hanging tool main body 41 has a first bolt hole 44 through which a fixing bolt 61 for fixing the frame member 30 and the hanging tool main body 41 is passed, and a second bolt hole 45 through which a hanging bolt 50 for fixing the indoor unit 20 and the hanging tool main body 41 is passed. The portion of the hanging tool main body 41 in which the second bolt hole 45 is provided is located inside the frame member 30 in a plan view when the hanging tool main body 41 is fixed to the frame member 30. Therefore, the horizontal position of the hanging bolt 50 can be inside the frame member 30 in a plan view. This allows the size of the frame of the frame member 30 to be larger than the indoor unit 20 in a plan view, while aligning the horizontal position of the hanging bolt 50 with the horizontal position of the fixture 23 of the indoor unit 20. Therefore, it is possible to adopt a configuration in which at least a part of the indoor unit 20 is inserted inside the frame member 30. In other words, there is no need to arrange the frame member 30 above and away from the indoor unit 20, and the indoor unit 20 can be arranged closer to the ceiling slab CS.

In addition, the hanging bolt 50 is not fixed directly to the frame member 30, but is fixed to the hanging device 40. Therefore, by fixing the hanging device 40 to the underside of the frame member 30, it is easy to position the hanging bolt 50 downward, and the hanging bolt 50 can be prevented from protruding above the frame member 30. This allows the frame member 30 to be positioned closer to the ceiling slab CS. Therefore, even if a part of the indoor unit 20 cannot be positioned inside the frame member 30, the indoor unit 20 together with the frame member 30 can be positioned closer to the ceiling slab CS.

As described above, by using the mounting structure 10 using the hanging device 40 of this embodiment, the indoor unit 20 can be positioned closer to the ceiling slab CS than the conventional mounting structure 210. Therefore, according to this embodiment, even if the height of the ceiling CA is relatively small, the indoor unit 20 can be mounted to the ceiling C while preventing the indoor unit body 21 from protruding from the ceiling CA. Therefore, there is no need to provide a member such as the cover 270 described above, and the installation cost of the indoor unit 20 can be prevented from increasing, and the workability of installing the indoor unit 20 can be prevented from worsening. In addition, the appearance of the indoor unit 20 as seen from inside the room can be prevented from becoming poor. In other words, the design of the indoor unit 20 as seen from inside the room can be improved. In addition, the need to change the installation location of the indoor unit 20 can be prevented.

In addition, according to this embodiment, a plurality of first bolt holes 44 are provided. Therefore, it is possible to prevent the hanging device 40 from rotating around the central axis of the fixing bolt 61 relative to the frame member 30. This allows the hanging device 40 to be stably fixed to the frame member 30. Therefore, the indoor unit 20 can be stably attached by the mounting structure 10.

In addition, according to this embodiment, the sling 40 has flanges 42, 43 that bend and protrude from the outer edge portions 41c, 41d of the sling body 41 and extend along the outer edge portions 41c, 41d of the sling body 41. Therefore, the strength of the sling 40 can be improved by the flanges 42, 43. This makes it possible to prevent the sling 40 from deforming, and the indoor unit 20 can be more stably attached via the sling 40.

In addition, according to this embodiment, the flange portions 42, 43 extend in a direction from the first bolt hole 44 toward the second bolt hole 45, and are provided in pairs with the first bolt hole 44 in between. Therefore, even if a flange portion is not provided on the outer edge of the suspender 40 in a direction perpendicular to the direction in which the pair of flange portions 42, 43 sandwich the first bolt hole 44, the strength of the suspender 40 can be easily ensured by the pair of flange portions 42, 43. As a result, as shown in FIG. 10, when the fixing bolt 61 passed through the first bolt hole 44 is fixed to the suspender main body 41, the spanner S tightening the nut 62 can be released in a direction perpendicular to the direction in which the pair of flange portions 42, 43 sandwich the first bolt hole 44. Therefore, it is possible to prevent the spanner S from interfering with the pair of flange portions 42, 43 when tightening the nut 62. Therefore, it is easy to ensure the movable range of the spanner S, and it is easy to tighten the nut 62. Therefore, the hanging device 40 can be easily fixed to the frame member 30 by the fixing bolt 61.

In addition, according to this embodiment, the portion of the hanging tool main body 41 where the second bolt hole 45 is provided is located farther from the first bolt hole 44 than the pair of flange portions 42, 43. In other words, the flange portions 42, 43 are not provided in the portions of the outer edge portions 41c, 41d that sandwich the portion where the second bolt hole 45 is provided in the first horizontal direction X. Therefore, as shown in FIG. 10, when fixing the hanging bolt 50 passed through the second bolt hole 45 to the hanging tool main body 41, the spanner S tightening the nut 51a can be prevented from interfering with the flange portions 42, 43. This makes it easier to secure the movable range of the spanner S and to tighten the nut 51a. Therefore, the hanging bolt 50 can be easily fixed to the hanging tool 40. As a result, the fixing bolt 61 and the hanging bolt 50 can be easily fixed to the hanging tool 40, and the installation work of the indoor unit 20 can be easily performed.

In addition, according to this embodiment, the width of the hanging tool main body 41 in a plan view becomes smaller from the portion where the first bolt hole 44 is provided to the portion where the second bolt hole 45 is provided. Therefore, the width of the portion of the hanging tool main body 41 where the second bolt hole 45 is provided can be made relatively small. This makes it easier to arrange the portion of the hanging tool main body 41 where the second bolt hole 45 is provided above the fixing device 23 provided on the indoor unit body 21 while suppressing interference between the hanging tool main body 41 and the indoor unit body 21. Therefore, it is easier to attach the indoor unit 20 via the hanging tool 40 while arranging at least a part of the indoor unit body 21 inside the frame member 30.

Furthermore, according to this embodiment, at least a portion of the indoor unit 20 is inserted inside the frame member 30. Therefore, the indoor unit 20 can be positioned close to the ceiling slab CS regardless of the vertical position of the frame member 30. This allows the indoor unit 20 to be attached to the ceiling C while preventing the indoor unit body 21 from protruding from the ceiling space CA, as described above.

In addition, according to this embodiment, the suspender main body 41 is fixed to the underside of the frame member 30. Therefore, it is easy to make the vertical position of the suspender main body 41 lower. This makes it easy to make the vertical position of the first bolt hole 44 and the vertical position of the second bolt hole 45 lower. Therefore, it is easy to make the vertical position of the fixing bolt 61 passed through the first bolt hole 44 and the vertical position of the hanging bolt 50 passed through the second bolt hole 45 lower. Therefore, it is possible to prevent the fixing bolt 61 and the hanging bolt 50 from protruding upward from the frame member 30. This makes it easy to bring the frame member 30 closer to the ceiling slab CS. Therefore, even if the indoor unit 20 cannot be inserted inside the frame member 30, it is possible to prevent the indoor unit main body 21 from protruding from the ceiling space CA.

In addition, according to this embodiment, the upper end of the fixing bolt 61 and the upper end of the hanging bolt 50 are located at the same vertical position as the upper end of the frame member 30. Therefore, the fixing bolt 61 and the hanging bolt 50 do not protrude above the frame member 30. This makes it easier to bring the frame member 30 closer to the ceiling slab CS. Therefore, it is possible to further prevent the indoor unit body 21 from protruding from the ceiling space CA.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of the above-described embodiments, and the following configurations and methods may also be adopted.

The shape of the suspending tool main body is not particularly limited. The suspending tool main body may be a polygonal shape other than a triangular shape in a plan view, or may be another shape such as an elliptical shape. The number of first bolt holes provided in the suspending tool main body may be one, or three or more. The suspending tool main body may be provided with a plurality of second bolt holes. The suspending tool main body may be fixed to any location of the frame member. In the above-mentioned embodiment, the suspending tool main body 41 may be fixed to the second support member 32 or may be fixed to the upper side of the frame member 30. The number of flange portions provided in the suspending tool main body may be one, or three or more. The flange portion may not be provided. The number of suspending tools included in the mounting structure for mounting the indoor unit is not particularly limited.

The frame member may have any shape as long as it is frame-shaped in a plan view. The frame member may be a polygonal frame shape other than a rectangle. The frame member may be configured in any manner. For example, in the above-described embodiment, the first support member 31 and the second support member 32 may be L-shaped angle steel or the like. The frame member may be an integrally molded frame-shaped member.

The upper ends of the fixing bolts and the upper ends of the hanging bolts may be located below the upper end of the frame member. In this case too, the fixing bolts and the hanging bolts do not protrude above the frame member, making it easier to bring the frame member closer to the ceiling slab. This further prevents the indoor unit body from protruding from above the ceiling. The upper ends of the fixing bolts and the upper ends of the hanging bolts may be located above the upper end of the frame member.

The indoor unit to be mounted by the mounting structure including the hanging device may be of any shape as long as it is a ceiling-embedded indoor unit. The indoor unit does not have to be inserted inside the frame member. In this case, the indoor unit is mounted to the ceiling while being positioned below the frame member.

The configurations and methods described in this specification can be combined as appropriate within the limits that do not contradict each other.

10... mounting structure, 20... indoor unit, 30... frame member, 40... hanging tool, 41... hanging tool main body, 41c, 41d... outer edge, 42, 43... flange, 44... first bolt hole, 45... second bolt hole, 50... hanging bolt, 61... fixing bolt, C... ceiling

Claims (7)

A hanging device for fixing an indoor unit to a ceiling,
A hanging device main body that is fixed to a frame member that is frame-shaped in a plan view and is fixed to a ceiling ;
a flange portion that is bent and protrudes from an outer edge portion of the suspender main body and extends along the outer edge portion of the suspender main body;
Equipped with
The sling body portion is
a first bolt hole through which a fixing bolt for fixing the frame member and the suspender main body is passed;
a second bolt hole through which a hanging bolt for fixing the indoor unit and the hanging tool main body is passed;
having
a portion of the suspender body in which the second bolt hole is provided is located inside the frame member in a plan view in a state in which the suspender body is fixed to the frame member,
The flange portion extends in a direction from the first bolt hole toward the second bolt hole, and a pair of flange portions are provided on either side of the first bolt hole.
The flange portion is not provided on an outer edge portion of the suspender main body in a direction perpendicular to a direction in which the pair of flange portions sandwich the first bolt hole,
a portion of the suspender body in which the second bolt holes are provided is located farther from the first bolt holes than the pair of flange portions . The lifting device according to claim 1, wherein a plurality of the first bolt holes are provided. 3 . The sling according to claim 1 , wherein a width of the sling body in a plan view decreases from a portion in which the first bolt hole is provided to a portion in which the second bolt hole is provided. A mounting structure for mounting an indoor unit on a ceiling,
A frame member that is fixed to a ceiling and has a frame shape in a plan view;
The sling device according to claim 1 , which is fixed to the frame member;
a fixing bolt that is passed through the first bolt hole and fixes the frame member and the suspender main body;
a hanging bolt that is passed through the second bolt hole and fixes the indoor unit and the hanging tool main body;
A mounting structure comprising: The mounting structure according to claim 4 , wherein at least a portion of the indoor unit is inserted inside the frame member. The mounting structure according to claim 4 or 5 , wherein the suspender body is fixed to a lower side of the frame member. 7. A mounting structure according to claim 4 , wherein the upper end of the fixing bolt and the upper end of the hanging bolt are located at the same vertical position as the upper end of the frame member or lower than the upper end of the frame member.

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