Support device

Abstract

To provide a support device capable of shortening the time required to replace an indoor unit of an air conditioner. [Solution] Support device 20 includes support member 21 and a hanging bracket 30 to which ceiling hanging member 11 is attached. Support member 21 has first stays 22 and second stays 23 that extend parallel to each other, third stays 24 and fourth stays 25 that intersect with first stays 22 and second stays 23 and extend parallel to each other, and an indoor unit hanging member mounting portion to which indoor unit hanging member 12 is attached. Hanging bracket 30 is configured to be movable relative to first stay 22 and second stay 23 in the longitudinal direction of first stay 22 and second stay 23. The indoor unit hanging member mounting portion has a first hole set for mounting indoor unit 1 to a ceiling in a first mounting state and a second hole set for mounting indoor unit 1 to a ceiling in a second mounting state.

Description

[Technical Field]

[0001] The present disclosure relates to a support device. [Background technology]

[0002] Patent Document 1 discloses a known technique for replacing an existing ceiling-suspended indoor unit of an air conditioner with a new one. Patent Document 1 discloses a replacement ceiling suspension member that allows the indoor unit of the existing air conditioner to be replaced with a new one without changing the suspension pitch of the suspension bolts of the indoor unit. The ceiling suspension member of Patent Document 1 moves the positions of the upper angle member and suspension fixture relative to the lower angle member, thereby attaching the new air conditioner indoor unit without changing the suspension pitch of the suspension bolts of the existing air conditioner indoor unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-145933 Summary of the Invention [Problem to be solved by the invention]

[0004] In the replacement ceiling suspension member described in Patent Document 1, the position of the upper angle member relative to the lower angle member needs to be adjusted to match the suspension bolts of the indoor unit of the new air conditioner, which makes the adjustment work time-consuming. [Means for solving the problem]

[0005] A support device according to a first aspect that solves the above-described problem is a support device that supports an indoor unit of an air conditioner in a suspended state from a ceiling, and includes a support member and a hanging bracket to which a ceiling hanging member extending from the ceiling is attached, the support member having first and second stays that extend parallel to each other, third and fourth stays that intersect with the first and second stays and extend parallel to each other, and an indoor unit hanging member mounting portion to which an indoor unit hanging member for mounting the indoor unit is attached, the hanging brackets being provided on the first and second stays and configured to be movable relative to the first and second stays in the longitudinal direction of the first and second stays, and the indoor unit hanging member mounting portion having a first hole set for mounting the indoor unit to the ceiling in a first mounting state and a second hole set for mounting the indoor unit to the ceiling in a second mounting state different from the first mounting state.

[0006] According to the above configuration, the support device can suspend the indoor unit from the ceiling using the first hole set and the second hole set without changing the pitch interval of the ceiling suspension member. Therefore, the support device can shorten the time it takes to replace the indoor unit.

[0007] In the support device of the second aspect, the second mounting state is a mounting state in which the indoor unit is rotated by a predetermined angle from the first mounting state.

[0008] According to the above configuration, the support device can install the indoor unit on the ceiling in an installation state that suits the conditions of the installation location of the indoor unit.

[0009] In the support device of the third aspect, the predetermined angle is 90 degrees.

[0010] According to the above configuration, the support device can be installed on the ceiling in the second installation state in which the indoor unit is rotated 90 degrees.

[0011] In the support device of the fourth aspect, the first stay is movable relative to the third stay and the fourth stay in the longitudinal direction of the third stay and the fourth stay, and the second stay is movable relative to the third stay and the fourth stay in the longitudinal direction of the third stay and the fourth stay.

[0012] According to the above configuration, the support device can finely adjust the position of the hanging fitting by moving the first stay and the second stay relative to the third stay and the fourth stay.

[0013] In the support device of the fifth aspect, the hanging fitting extends in the longitudinal direction of the third stay and the fourth stay and has a ceiling hanging member mounting portion to which the ceiling hanging member is attached, the third stay has a first positioning hole for determining the position of the first stay relative to the third stay and a second positioning hole arranged adjacent to the first positioning hole, the fourth stay has a third positioning hole for determining the position of the first stay relative to the fourth stay and a fourth positioning hole arranged adjacent to the third positioning hole, a first distance from the first positioning hole to the second positioning hole is less than the length by which the ceiling hanging member can move in the longitudinal direction of the third stay and the fourth stay of the ceiling hanging member mounting portion, and a second distance from the third positioning hole to the fourth positioning hole is less than the length.

[0014] According to the above configuration, the support device can finely adjust the position of the hanging fitting provided on the first stay.

[0015] In the support device of the sixth aspect, the third stay has a fifth positioning hole and a sixth positioning hole adjacent to the fifth positioning hole for determining the position of the second stay relative to the third stay, the fourth stay has a seventh positioning hole and an eighth positioning hole adjacent to the seventh positioning hole for determining the position of the second stay relative to the fourth stay, a third distance from the fifth positioning hole to the sixth positioning hole is less than or equal to the length, and a fourth distance from the seventh positioning hole to the eighth positioning hole is less than or equal to the length.

[0016] According to the above configuration, the support device can finely adjust the position of the hanging fitting provided on the second stay.

[0017] In the support device of the seventh aspect, the first stay is provided with a first mark for determining the position of the hanging fitting relative to the first stay, the second stay is provided with a second mark for determining the position of the hanging fitting relative to the second stay, and the hanging fitting is provided with a third mark for determining the position of the hanging fitting relative to the first stay and the second stay.

[0018] According to the above configuration, the support device can suitably adjust the position of the hanging fitting relative to the first stay using the first and third marks. Also, according to the above configuration, the support device can suitably adjust the position of the hanging fitting relative to the second stay using the second and third marks.

[0019] In the support device of the eighth aspect, the third stay is provided with a fourth mark for determining the position of the first stay and the second stay relative to the third stay, and the fourth stay is provided with a fifth mark for determining the position of the first stay and the second stay relative to the fourth stay.

[0020] According to the above configuration, the support device can suitably adjust the positions of the first stay and the second stay relative to the third stay by using the fourth mark. Also, according to the above configuration, the support device can suitably adjust the positions of the first stay and the second stay relative to the fourth stay by using the fifth mark. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of an indoor unit of an air conditioner attached to a ceiling in a first attachment state by a support structure including a support device of a first embodiment. [Figure 2] FIG. 2 is a plan view of the indoor unit of the air conditioner of FIG. [Figure 3] 10 is a perspective view of an indoor unit of an air conditioner attached to a ceiling in a second attachment state by a support structure including the support device of the first embodiment. FIG. [Figure 4] FIG. 4 is a plan view of the indoor unit of the air conditioner of FIG. [Figure 5] FIG. 2 is a perspective view of the support device of FIG. [Figure 6] FIG. 2 is a plan view of the support device of FIG. [Figure 7] FIG. 2 is a bottom view of the support device of FIG. [Figure 8] 2 is a side view of the support device of FIG. 1 as viewed from a first direction. [Figure 9] 2 is a side view of the support device of FIG. 1 as viewed from a second direction. [Figure 10] 10 is a perspective view of an indoor unit of an air conditioner attached to a ceiling in a first attachment state by a support structure including a support device of a second embodiment. FIG. [Figure 11] FIG. 11 is a plan view of the indoor unit of the air conditioner of FIG. [Figure 12] 10 is a perspective view of an indoor unit of an air conditioner attached to a ceiling in a second attachment state by a support structure including a support device of a second embodiment. FIG. [Figure 13] FIG. 13 is a plan view of the indoor unit of the air conditioner of FIG. [Figure 14] FIG. 11 is a perspective view of the support device of FIG. [Figure 15] FIG. 11 is a plan view of the support device of FIG. [Figure 16] 11 is a side view of the support device of FIG. 10 as viewed from a first direction. [Figure 17] 11 is a side view of the support device of FIG. 10 as viewed from a second direction. FIG. [Figure 18] 11 is an enlarged perspective view of a portion of the support device of FIG. 10. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] First Embodiment A support device 20 according to a first embodiment will be described with reference to FIGS.

[0023] [Support structure] As shown in Figures 1 to 4, the support structure 10 supports an object in a suspended state. In this embodiment, the object is an indoor unit 1 of an air conditioner. The indoor unit 1 is, for example, a ceiling-embedded type. The air outlet and air inlet of the indoor unit 1 are exposed through an opening in a ceiling board inside the room.

[0024] The support structure 10 includes a ceiling suspension member 11, an indoor unit suspension member 12, and a support device 20. The ceiling suspension member 11 is attached to the ceiling. In this embodiment, the ceiling refers to the underside of a slab between a lower floor and an upper floor. The ceiling suspension member 11 extends downward from the ceiling. The ceiling suspension member 11 includes, for example, a male screw.

[0025] Support device 20 is attached to ceiling hanging member 11. Ceiling hanging member 11 has first ceiling hanging member 11A, second ceiling hanging member 11B, third ceiling hanging member 11C, and fourth ceiling hanging member 11D. First ceiling hanging member 11A, second ceiling hanging member 11B, third ceiling hanging member 11C, and fourth ceiling hanging member 11D are attached to four corners of support device 20, respectively.

[0026] The indoor unit 1 is attached to the support device 20 via an indoor unit hanging member 12. One end of the indoor unit hanging member 12 is attached to the support device 20. The other end of the indoor unit hanging member 12 is attached to the indoor unit 1. The indoor unit hanging member 12 includes, for example, a male screw.

[0027] Indoor unit hanging member 12 has first indoor unit hanging member 12A, second indoor unit hanging member 12B, third indoor unit hanging member 12C, and fourth indoor unit hanging member 12D. First indoor unit hanging member 12A, second indoor unit hanging member 12B, third indoor unit hanging member 12C, and fourth indoor unit hanging member 12D are attached to each of the four corners of indoor unit 1.

[0028] [Support device] The support device 20 is used in renovation work to remove an existing indoor unit and replace it with a new indoor unit. The support device 20 supports the air conditioner indoor unit 1 while it is suspended from the ceiling. The support device 20 includes a support member 21 and a hanging bracket 30 to which a ceiling hanging member 11 extending from the ceiling is attached.

[0029] 5 to 9, the support member 21 has a first stay 22 and a second stay 23. The first stay 22 and the second stay 23 extend parallel to each other. The first stay 22 and the second stay 23 extend in a first direction A1 that coincides with the longitudinal direction of the first stay 22 and the second stay 23. The first stay 22 and the second stay 23 are arranged in the same plane as the first direction A1, spaced apart from each other in a second direction A2 that is perpendicular to the first direction A1.

[0030] The first stay 22 has a first bottom plate portion 22A, a first vertical plate portion 22B, and a first side plate portion 22C. The first vertical plate portion 22B extends upward from the first bottom plate portion 22A. The first vertical plate portion 22B extends upward from one end of the first bottom plate portion 22A in the second direction A2. The first stay 22 has a first end portion 22D that is one end in the first direction A1, and a second end portion 22E that is the other end. The first side plate portion 22C is provided at the first end portion 22D and the second end portion 22E.

[0031] The second stay 23 has a second bottom plate portion 23A, a second vertical plate portion 23B, and a second side plate portion 23C. The second vertical plate portion 23B extends upward from the second bottom plate portion 23A. The second vertical plate portion 23B extends upward from one end of the second bottom plate portion 23A in the second direction A2. The second stay 23 has a third end portion 23D, which is one end in the first direction A1, and a fourth end portion 23E, which is the other end. The second side plate portion 23C is provided at the third end portion 23D and the fourth end portion 23E.

[0032] The support member 21 has a third stay 24 and a fourth stay 25. The third stay 24 and the fourth stay 25 intersect with the first stay 22 and the second stay 23 and extend parallel to each other. In this embodiment, the intersecting of the stays includes the end of one stay contacting the other stay. The third stay 24 and the fourth stay 25 extend in the second direction A2. The second direction A2 coincides with the longitudinal direction of the third stay 24 and the fourth stay 25. The third stay 24 and the fourth stay 25 are arranged at an interval from each other in the first direction A1.

[0033] The third stay 24 has a third bottom plate portion 24A and a third vertical plate portion 24B. The third vertical plate portion 24B extends upward from the third bottom plate portion 24A. The third vertical plate portion 24B extends upward from one end of the third bottom plate portion 24A in the first direction A1. The third stay 24 has a fifth end portion 24C that is one end in the second direction A2, and a sixth end portion 24D that is the other end.

[0034] In this embodiment, the third stay 24 is combined with the first stay 22 so that the fifth end 24C of the third stay 24 contacts the first end 22D of the first stay 22. The third stay 24 is attached to the first stay 22 with bolts and nuts. The first side plate portion 22C located at the first end 22D of the first stay 22 is provided with a first hole through which a bolt for attaching the third stay 24 to the first stay 22 is inserted. The third vertical plate portion 24B of the third stay 24 is provided at a portion corresponding to the first hole with a second hole through which a bolt for attaching the third stay 24 to the first stay 22 is inserted. A nut is provided integrally with the third vertical plate portion 24B at a position corresponding to the second hole. The nut may be separate from the third vertical plate portion 24B. The first hole and the second hole may be provided with a female thread for engaging with the bolt.

[0035] In this embodiment, the third stay 24 is combined with the second stay 23 so that the sixth end 24D of the third stay 24 contacts the third end 23D of the second stay 23. The third stay 24 is attached to the second stay 23 with bolts and nuts. A third hole is provided in the second side plate portion 23C located at the third end 23D of the second stay 23, and a bolt for attaching the third stay 24 to the second stay 23 is inserted therein. A fourth hole is provided in a portion of the third vertical plate portion 24B of the third stay 24 corresponding to the third hole, and a bolt for attaching the third stay 24 to the second stay 23 is inserted therein. A nut is provided integrally with the third vertical plate portion 24B at a position corresponding to the fourth hole. The nut may be separate from the third vertical plate portion 24B. The third hole and the fourth hole may be provided with a female thread for engaging with the bolt.

[0036] The fourth stay 25 has a fourth bottom plate portion 25A and a fourth vertical plate portion 25B. The fourth vertical plate portion 25B extends upward from the fourth bottom plate portion 25A. The fourth vertical plate portion 25B extends upward from one end of the fourth bottom plate portion 25A in the first direction A1. The fourth stay 25 has a seventh end 25C that is one end in the second direction A2, and an eighth end 25D that is the other end.

[0037] In this embodiment, the fourth stay 25 is combined with the first stay 22 so that the seventh end 25C of the fourth stay 25 contacts the second end 22E of the first stay 22. The fourth stay 25 is attached to the first stay 22 with a bolt and a nut. The first side plate portion 22C located at the second end 22E of the first stay 22 is provided with a fifth hole through which a bolt for attaching the fourth stay 25 to the first stay 22 is inserted. The fourth vertical plate portion 25B of the fourth stay 25 is provided at a portion corresponding to the fifth hole through which a bolt for attaching the fourth stay 25 to the first stay 22 is inserted. A nut is provided integrally with the fourth vertical plate portion 25B at a position corresponding to the sixth hole. The nut may be separate from the fourth vertical plate portion 25B. The fifth and sixth holes may be provided with female threads for engaging with the bolts.

[0038] In this embodiment, the fourth stay 25 is combined with the second stay 23 so that the eighth end 25D of the fourth stay 25 contacts the fourth end 23E of the second stay 23. The fourth stay 25 is attached to the second stay 23 with a bolt and a nut. The second side plate portion 23C located at the fourth end 23E of the second stay 23 is provided with a seventh hole, through which a bolt for attaching the fourth stay 25 to the second stay 23 is inserted. The fourth vertical plate portion 25B of the fourth stay 25 is provided at a portion corresponding to the seventh hole, through which a bolt for attaching the fourth stay 25 to the second stay 23 is inserted. A nut is provided integrally with the fourth vertical plate portion 25B at a position corresponding to the eighth hole. The nut may be separate from the fourth vertical plate portion 25B. The seventh and eighth holes may be provided with female threads for engaging with the bolts.

[0039] The hoisting fitting 30 is provided on the first stay 22 and the second stay 23. The hoisting fitting 30 is configured to be movable in the first direction A1 relative to the first stay 22. The hoisting fitting 30 is configured to be movable in the first direction A1 relative to the second stay 23.

[0040] The hanging hardware 30 has a first portion 31 and a second portion 32 extending from the first portion 31 in the second direction A2. The first portion 31 is formed integrally with the second portion 32. The first portion 31 extends in a third direction A3 perpendicular to the first direction A1 and the second direction A2. The end of the second portion 32 opposite the first portion 31 is bent in the third direction A3. The end of the second portion 32 opposite the first portion 31 does not have to be bent in the third direction A3.

[0041] A ceiling hanging member mounting portion 32A is provided in the second portion 32. A ceiling hanging member 11 is mounted to the ceiling hanging member mounting portion 32A. The ceiling hanging member mounting portion 32A extends in the second direction A2. The ceiling hanging member mounting portion 32A has a recess. The ceiling hanging member 11 is inserted into the ceiling hanging member mounting portion 32A from the third direction A3. The ceiling hanging member mounting portion 32A is configured so that the ceiling hanging member 11 can be moved and mounted within the ceiling hanging member mounting portion 32A. By moving and mounting the ceiling hanging member 11 within the ceiling hanging member mounting portion 32A, the hanging bracket 30 can accommodate existing hanging bolt pitches.

[0042] The first portion 31 has a plurality of holes 31A. A bolt is inserted into each of the plurality of holes 31A. Each of the plurality of holes 31A is provided with an internal thread that engages with the external thread of the bolt. Nuts may be provided in portions of the first portion 31 that correspond to the plurality of holes 31A.

[0043] The hanging bracket 30 has a first hanging bracket 30A and a second hanging bracket 30B. The first hanging bracket 30A and the second hanging bracket 30B are attached to the first stay 22. The second portion 32 of the first hanging bracket 30A is attached to the first elongated hole 22F of the first stay 22. The distance from the first elongated hole 22F to the first end 22D of the first stay 22 is shorter than the distance from the first elongated hole 22F to the second end 22E of the first stay 22. A bolt inserted into the first elongated hole 22F engages with female threads provided in the multiple holes 31A of the first hanging bracket 30A. A first ceiling hanging member 11A is attached to the ceiling hanging member attachment portion 32A of the first hanging bracket 30A.

[0044] The second portion 32 of the second hanging fitting 30B is attached to the second elongated hole 22G of the first stay 22. The distance from the second elongated hole 22G to the second end 22E of the first stay 22 is shorter than the distance from the second elongated hole 22G to the first end 22D of the first stay 22. The bolt inserted into the second elongated hole 22G engages with the female threads provided in the multiple holes 31A of the second hanging fitting 30B. The second ceiling hanging member 11B is attached to the ceiling hanging member attachment portion 32A of the second hanging fitting 30B.

[0045] The hanging bracket 30 includes a third hanging bracket 30C and a fourth hanging bracket 30D. The third hanging bracket 30C and the fourth hanging bracket 30D are attached to the second stay 23. The second portion 32 of the third hanging bracket 30C is attached to the third elongated hole 23F of the second stay 23. The distance from the third elongated hole 23F to the third end 23D of the second stay 23 is shorter than the distance from the third elongated hole 23F to the fourth end 23E of the second stay 23. A bolt inserted into the third elongated hole 23F engages with female threads provided in the multiple holes 31A of the third hanging bracket 30C. A third ceiling hanging member 11C is attached to the ceiling hanging member attachment portion 32A of the third hanging bracket 30C.

[0046] The second portion 32 of the fourth hanging fitting 30D is attached to the fourth elongated hole 23G of the second stay 23. The distance from the fourth elongated hole 23G to the fourth end 23E of the second stay 23 is shorter than the distance from the fourth elongated hole 23G to the third end 23D of the second stay 23. A bolt inserted into the fourth elongated hole 23G engages with female threads provided in the multiple holes 31A of the fourth hanging fitting 30D. A fourth ceiling hanging member 11D is attached to the ceiling hanging member attachment portion 32A of the fourth hanging fitting 30D.

[0047] 1 to 9, support member 21 has indoor unit hanging member mounting portions 26 to which indoor unit hanging members 12 for mounting indoor unit 1 are attached. Indoor unit hanging member mounting portions 26 are provided on at least one of first stay 22, second stay 23, third stay 24, and fourth stay 25.

[0048] The indoor unit hanging member mounting portion 26 has a first hole set 27 for mounting the indoor unit 1 to the ceiling in a first mounting state, and a second hole set 28 for mounting the indoor unit 1 to the ceiling in a second mounting state that is different from the first mounting state. Figures 1 and 2 show the indoor unit 1 mounted to the ceiling in the first mounting state. Figures 3 and 4 show the indoor unit 1 mounted to the ceiling in the second mounting state.

[0049] The second mounting state is a mounting state in which the indoor unit 1 is rotated a predetermined angle from the first mounting state. The predetermined angle is the angle formed by an imaginary line connecting the predetermined point P and the center of the first mounting hole 27A and an imaginary line connecting the predetermined point P and the center of the sixth mounting hole 28B. The predetermined point P is, for example, the intersection of an imaginary line connecting the center of the first mounting hole 27A and the center of the fourth mounting hole 27D with an imaginary line connecting the center of the sixth mounting hole 28B and the center of the seventh mounting hole 28C. The predetermined angle is greater than 0 degrees and less than 180 degrees. The predetermined angle is equal to or greater than 45 degrees and equal to or less than 135 degrees. In this embodiment, the predetermined angle is 90 degrees.

[0050] The first hole set 27 includes a first mounting hole 27A, a second mounting hole 27B, a third mounting hole 27C, and a fourth mounting hole 27D. The first mounting hole 27A and the second mounting hole 27B are provided in the third bottom plate portion 24A of the third stay 24. The distance from the first mounting hole 27A to the fifth end 24C of the third stay 24 is shorter than the distance from the first mounting hole 27A to the sixth end 24D of the third stay 24. The distance from the second mounting hole 27B to the sixth end 24D of the third stay 24 is shorter than the distance from the second mounting hole 27B to the fifth end 24C of the third stay 24.

[0051] The third mounting hole 27C and the fourth mounting hole 27D are provided in the fourth bottom plate portion 25A of the fourth stay 25. The distance from the third mounting hole 27C to the seventh end 25C of the fourth stay 25 is shorter than the distance from the third mounting hole 27C to the eighth end 25D of the fourth stay 25. The distance from the fourth mounting hole 27D to the eighth end 25D of the fourth stay 25 is shorter than the distance from the fourth mounting hole 27D to the seventh end 25C of the fourth stay 25.

[0052] When indoor unit 1 is mounted to a ceiling in the first mounting state using first hole set 27, indoor unit hanging member 12 is attached to each of mounting holes 27A, 27B, 27C, and 27D of first hole set 27. First indoor unit hanging member 12A is attached to first mounting hole 27A. Second indoor unit hanging member 12B is attached to second mounting hole 27B. Third indoor unit hanging member 12C is attached to third mounting hole 27C. Fourth indoor unit hanging member 12D is attached to fourth mounting hole 27D.

[0053] The second hole set 28 includes a fifth mounting hole 28A, a sixth mounting hole 28B, a seventh mounting hole 28C, and an eighth mounting hole 28D. The fifth mounting hole 28A and the sixth mounting hole 28B are provided in the first bottom plate portion 22A of the first stay 22. The distance from the fifth mounting hole 28A to the first end 22D of the first stay 22 is shorter than the distance from the fifth mounting hole 28A to the second end 22E of the first stay 22. The distance from the sixth mounting hole 28B to the second end 22E of the first stay 22 is shorter than the distance from the sixth mounting hole 28B to the first end 22D of the first stay 22.

[0054] The seventh mounting hole 28C and the eighth mounting hole 28D are provided in the second bottom plate portion 23A of the second stay 23. The distance from the seventh mounting hole 28C to the third end 23D of the second stay 23 is shorter than the distance from the seventh mounting hole 28C to the fourth end 23E of the second stay 23. The distance from the eighth mounting hole 28D to the fourth end 23E of the second stay 23 is shorter than the distance from the eighth mounting hole 28D to the third end 23D of the second stay 23.

[0055] When indoor unit 1 is mounted to the ceiling in the second mounting state using second hole set 28, indoor unit hanging member 12 is attached to each of mounting holes 28A, 28B, 28C, and 28D of second hole set 28. First indoor unit hanging member 12A is attached to fifth mounting hole 28A. Second indoor unit hanging member 12B is attached to sixth mounting hole 28B. Third indoor unit hanging member 12C is attached to seventh mounting hole 28C. Fourth indoor unit hanging member 12D is attached to eighth mounting hole 28D.

[0056] The first stay 22 is provided with a first mark 40 for determining the position of the hanging hardware 30 relative to the first stay 22. The first mark 40 is provided in the center of the first vertical plate portion 22B of the first stay 22. The first mark 40 may be provided on the first stay 22 by any method as long as it can be confirmed from the outside. The first mark 40 is, for example, a hole. The first mark 40 may be a protrusion formed from metal or resin, or may be a mark made with ink or the like.

[0057] The second stay 23 is provided with a second mark 41 for determining the position of the hanging fitting 30 relative to the second stay 23. The second mark 41 is provided in the center of the second vertical plate portion 23B of the second stay 23. The second mark 41 may be provided on the second stay 23 by any method as long as it can be confirmed from the outside. The second mark 41 is, for example, a hole. The second mark 41 may be a protrusion formed from metal or resin, or may be a mark made with ink or the like.

[0058] The hanging hardware 30 is provided with a third mark 42 for determining the position of the hanging hardware 30 relative to the first stay 22 and the second stay 23. The third mark 42 is provided in the center of the first portion 31 of the hanging hardware 30. The third mark 42 may be provided on the hanging hardware 30 by any method as long as it can be confirmed from the outside. The third mark 42 is, for example, a hole. The third mark 42 may be a protrusion formed from metal or resin, or may be a mark made with ink or the like.

[0059] A fourth mark 43 is provided on the third stay 24 to determine the center position of the support device 20. The fourth mark 43 is provided at the center of the third bottom plate portion 24A of the third stay 24. The fourth mark 43 may be provided on the third stay 24 by any method as long as it can be confirmed from the outside. The fourth mark 43 is, for example, a hole. The fourth mark 43 may be a protrusion formed from metal or resin, or may be a mark made of ink or the like.

[0060] A fifth mark 44 is provided on the fourth stay 25 to determine the center position of the support device 20. The fifth mark 44 is provided at the center of the fourth bottom plate portion 25A of the fourth stay 25. The fifth mark 44 may be provided on the fourth stay 25 by any method as long as it can be confirmed from the outside. The fifth mark 44 is, for example, a hole. The fifth mark 44 may be a protrusion formed from metal or resin, or may be a mark made of ink or the like.

[0061] [Renewal work procedure] The procedure for renovation work to replace an existing indoor unit with a new indoor unit will be explained below. The renovation work is carried out in steps 1, 2, 3, 4, and 5. In step 1, the existing indoor unit is removed. In step 2, the pitch interval of the ceiling hanging member 11 is measured.

[0062] In the third step, the support devices 20 are attached to the ceiling hanging members 11 in accordance with the pitch intervals of the ceiling hanging members 11. In the third step, the positions of the first to fourth hanging fittings 30A, 30B, 30C, and 30D in the first direction A1 are adjusted to match the ceiling hanging members 11, thereby attaching the support devices 20 to the ceiling hanging members 11. In the third step, the position of the hanging fittings 30 relative to the first stay 22 is adjusted using the first mark 40 and the third mark 42. In the third step, the position of the hanging fittings 30 relative to the second stay 23 is adjusted using the second mark 41 and the third mark 42. In the third step, the position of the ceiling hanging member 11 in the second direction A2 is adjusted by moving the ceiling hanging member 11 within the ceiling hanging member mounting portion 32A of the hanging fittings 30.

[0063] In a fourth step, the indoor unit hanging member 12 is attached to the first hole set 27 or the second hole set 28. In a fifth step, a new indoor unit is attached to the indoor unit hanging member 12. In the fifth step, the new indoor unit is attached to the ceiling in the first attachment state or the second attachment state, depending on whether the first hole set 27 or the second hole set 28 is used. For example, even if the attachment state of the new indoor unit needs to be changed depending on the position of piping or the like, the attachment state can be easily changed using the first hole set 27 or the second hole set 28.

[0064] <Effects of the first embodiment> The effects of the first embodiment will be described. (1-1) Support device 20, which supports indoor unit 1 of an air conditioner in a suspended state from the ceiling, includes support member 21 and hanging bracket 30 to which ceiling hanging member 11 extending from the ceiling is attached. Support member 21 has first stay 22 and second stay 23 that extend parallel to each other, third stay 24 and fourth stay 25 that intersect with first stay 22 and second stay 23 and extend parallel to each other, and indoor unit hanging member mounting portion 26 to which indoor unit hanging member 12 for mounting indoor unit 1 is attached. Hanging bracket 30 is provided on first stay 22 and second stay 23, and is configured to be movable relative to first stay 22 and second stay 23 in the longitudinal direction of first stay 22 and second stay 23. The indoor unit hanging member mounting portion 26 has a first hole set 27 for mounting the indoor unit 1 to the ceiling in a first mounting state, and a second hole set 28 for mounting the indoor unit 1 to the ceiling in a second mounting state different from the first mounting state.

[0065] According to the above configuration, support device 20 can suspend indoor unit 1 from the ceiling using first hole set 27 and second hole set 28 without changing the pitch interval of ceiling hanging member 11. Therefore, support device 20 can shorten the time it takes to replace indoor unit 1.

[0066] (1-2) The second mounting state is a mounting state in which the indoor unit 1 is rotated by a predetermined angle from the first mounting state.

[0067] According to the above configuration, the support device 20 can install the indoor unit 1 on the ceiling in an installation state that suits the situation of the installation location of the indoor unit 1.

[0068] (1-3) The predetermined angle is 90 degrees.

[0069] According to the above configuration, the support device 20 can be installed on the ceiling in the second installation state in which the indoor unit 1 is rotated by 90 degrees.

[0070] (1-4) A first mark 40 is provided on the first stay 22 for determining the position of the sling 30 relative to the first stay 22. A second mark 41 is provided on the second stay 23 for determining the position of the sling 30 relative to the second stay 23. A third mark 42 is provided on the sling 30 for determining the position of the sling 30 relative to the first stay 22 and the second stay 23.

[0071] According to the above configuration, the support device 20 can suitably adjust the position of the suspension fitting 30 relative to the first stay 22 using the first mark 40 and the third mark 42. Furthermore, according to this configuration, the support device 20 can suitably adjust the position of the suspension fitting 30 relative to the second stay 23 using the second mark 41 and the third mark 42.

[0072] Second Embodiment A support device 50 according to a second embodiment will be described with reference to Figures 10 to 18. In this embodiment, components common to those in the first embodiment are assigned the same reference numerals as those in the first embodiment, and descriptions of overlapping components will be omitted.

[0073] The support device 50 of the second embodiment includes a support member 51 and a hanging bracket 30. The support member 51 has a first stay 52, a second stay 53, a third stay 54, and a fourth stay 55.

[0074] The first stay 52 has a first bottom plate portion 52A, a first vertical plate portion 52B, and a first side plate portion 52C. The first vertical plate portion 52B extends upward from the first bottom plate portion 52A. The first vertical plate portion 52B extends upward from one end of the first bottom plate portion 52A in the second direction A2. The first stay 52 has a first end portion 52D and a second end portion 52E. The first side plate portion 52C is provided at the first end portion 52D and the second end portion 52E. The first side plate portion 52C extends on the opposite side from the first bottom plate portion 52A in the second direction A2. The first stay 52 has a first elongated hole 52F to which the first suspending bracket 30A is attached and a second elongated hole 52G to which the second suspending bracket 30B is attached.

[0075] The second stay 53 has a second bottom plate portion 53A, a second vertical plate portion 53B, and a second side plate portion 53C. The second vertical plate portion 53B extends upward from the second bottom plate portion 53A. The second vertical plate portion 53B extends upward from one end of the second bottom plate portion 53A in the second direction A2. The second stay 53 has a third end portion 53D and a fourth end portion 53E. The second side plate portion 53C is provided at the third end portion 53D and the fourth end portion 53E. The second side plate portion 53C extends on the opposite side from the second bottom plate portion 53A in the second direction A2. The second stay 53 has a third elongated hole 53F to which the third suspender 30C is attached and a fourth elongated hole 53G to which the fourth suspender 30D is attached.

[0076] The third stay 54 has a first upper plate portion 54A and a third vertical plate portion 54B. The third vertical plate portion 54B extends downward from the first upper plate portion 54A. The third vertical plate portion 54B extends downward from one end of the first upper plate portion 54A in the first direction A1. The third stay 54 has a fifth end portion 54C and a sixth end portion 54D.

[0077] The fourth stay 55 has a second upper plate portion 55A and a fourth vertical plate portion 55B. The fourth vertical plate portion 55B extends downward from the second upper plate portion 55A. The fourth vertical plate portion 55B extends downward from one end of the second upper plate portion 55A in the first direction A1. The fourth stay 55 has a seventh end portion 55C and an eighth end portion 55D.

[0078] The first stay 52 and the second stay 53 are movable relative to the third stay 54 and the fourth stay 55 in the longitudinal direction of the third stay 54 and the fourth stay 55. The first stay 52 and the second stay 53 are movable relative to the third stay 54 and the fourth stay 55 in the second direction A2. The third stay 54 and the fourth stay 55 are each provided with a plurality of positioning holes 56 for determining the positions of the first stay 52 and the second stay 53 relative to the third stay 54 and the fourth stay 55, respectively.

[0079] The first stay 52 is combined with the third stay 54 so that the first side plate portion 52C on the first end portion 52D side of the first stay 52 contacts the third vertical plate portion 54B of the third stay 54. The first stay 52 is attached to the third stay 54 with bolts and nuts.

[0080] A ninth hole is provided in the first side plate portion 52C on the first end portion 52D side of the first stay 52, and a bolt is inserted therein to couple the first stay 52 with the third stay 54. The position of the first stay 52 relative to the third stay 54 is changed by arranging the ninth hole at a position corresponding to one of the plurality of positioning holes 56 in the third stay 54. A nut is provided integrally with the first side plate portion 52C at a position corresponding to the ninth hole and on the opposite side of the first side plate portion 52C from the third stay 54. The nut may be separate from the first side plate portion 52C. The ninth hole may be provided with a female thread that engages with the bolt.

[0081] The third stay 54 has a first positioning hole 56A and a second positioning hole 56B adjacent to the first positioning hole 56A for determining the position of the first stay 52 relative to the third stay 54. The first positioning hole 56A and the second positioning hole 56B are provided in the third vertical plate portion 54B of the third stay 54. The first positioning hole 56A and the second positioning hole 56B are provided in the third vertical plate portion 54B of the third stay 54, aligned in order from the fifth end portion 54C of the third stay 54 in the second direction A2. The distance from the first positioning hole 56A to the fifth end portion 54C of the third stay 54 is shorter than the distance from the second positioning hole 56B to the fifth end portion 54C of the third stay 54.

[0082] When three or more positioning holes 56 corresponding to the ninth hole are provided in the third vertical plate portion 54B of the third stay 54, the positioning holes 56 are provided in the third vertical plate portion 54B of the third stay 54 in order from the fifth end 54C of the third stay 54 in the second direction A2. When the positioning holes 56 are numbered in order of increasing distance to the fifth end 54C of the third stay 54, the positioning holes 56 have the following relationship. The relationship between the first positioning hole 56 and the second positioning hole 56 of the first set is the same as the relationship between the first positioning hole 56A and the second positioning hole 56B, and is also the same as the relationship between the second positioning hole 56 and the third positioning hole 56 of the second set. Similarly, the relationship between the two positioning holes 56 of the third set is the same as the relationship between the two positioning holes 56 of the fourth set. In other words, the relationship between the two positioning holes 56 of a given set is the same as the relationship between the two positioning holes 56 of the set immediately preceding the given set.

[0083] 18, the first distance X from the first positioning hole 56A to the second positioning hole 56B is equal to or less than the length S of the ceiling hanging member mounting portion 32A that the ceiling hanging member 11 can move in the second direction A2. The length S may be equal to or different from the length of the recess of the ceiling hanging member mounting portion 32A. In this embodiment, the length S is shorter than the length of the recess of the ceiling hanging member mounting portion 32A.

[0084] The first stay 52 is combined with the fourth stay 55 so that the first side plate portion 52C on the second end portion 52E side of the first stay 52 contacts the fourth vertical plate portion 55B of the fourth stay 55. The first stay 52 is attached to the fourth stay 55 with bolts and nuts.

[0085] The first side plate portion 52C on the second end portion 52E side of the first stay 52 is provided with a tenth hole into which a bolt for combining the first stay 52 with the fourth stay 55 is inserted. The tenth hole is disposed at a position corresponding to one of the plurality of positioning holes 56 of the fourth stay 55, thereby changing the position of the first stay 52 relative to the fourth stay 55. A nut is provided integrally with the first side plate portion 52C at a position corresponding to the tenth hole and on the opposite side of the first side plate portion 52C from the fourth stay 55. The nut may be separate from the first side plate portion 52C. The tenth hole may be provided with a female thread that engages with the bolt.

[0086] The fourth stay 55 has a third positioning hole 56C and a fourth positioning hole 56D adjacent to the third positioning hole 56C, which are used to determine the position of the first stay 52 relative to the fourth stay 55. The third positioning hole 56C and the fourth positioning hole 56D are provided in a fourth vertical plate portion 55B of the fourth stay 55. The third positioning hole 56C and the fourth positioning hole 56D are provided in the fourth vertical plate portion 55B of the fourth stay 55, aligned in order from a seventh end portion 55C of the fourth stay 55 in the second direction A2. The distance from the third positioning hole 56C to the seventh end portion 55C of the fourth stay 55 is shorter than the distance from the fourth positioning hole 56D to the seventh end portion 55C of the fourth stay 55.

[0087] When three or more positioning holes 56 corresponding to the tenth hole are provided in the fourth vertical plate portion 55B of the fourth stay 55, the positioning holes 56 are provided in the fourth vertical plate portion 55B of the fourth stay 55 in order from the seventh end 55C of the fourth stay 55 in the second direction A2. When the positioning holes 56 are numbered in order of increasing distance to the seventh end 55C of the fourth stay 55, the positioning holes 56 have the following relationship. The relationship between the first positioning hole 56 and the second positioning hole 56 of the first set is the same as the relationship between the third positioning hole 56C and the fourth positioning hole 56D, and is also the same as the relationship between the second positioning hole 56 and the third positioning hole 56 of the second set. Similarly, the relationship between the two positioning holes 56 of the third set is the same as the relationship between the two positioning holes 56 of the fourth set. In other words, the relationship between the two positioning holes 56 of a given set is the same as the relationship between the two positioning holes 56 of the set immediately preceding the given set.

[0088] A second distance from the third positioning hole 56C to the fourth positioning hole 56D is equal to or less than the length S by which the ceiling hanging member 11 of the ceiling hanging member mounting portion 32A can move in the second direction A2. The second distance has the same dimension as the first distance X. The relationship between the second distance and the length S is the same as the relationship between the first distance X and the length S, and therefore an enlarged view is omitted.

[0089] The second stay 53 is combined with the third stay 54 so that the second side plate portion 53C on the third end portion 53D side of the second stay 53 contacts the third vertical plate portion 54B of the third stay 54. The second stay 53 is attached to the third stay 54 with bolts and nuts.

[0090] The second side plate portion 53C on the third end portion 53D side of the second stay 53 is provided with an eleventh hole into which a bolt for assembling the second stay 53 with the third stay 54 is inserted. The position of the second stay 53 relative to the third stay 54 is changed by arranging the eleventh hole at a position corresponding to one of the plurality of positioning holes 56 of the third stay 54. A nut is provided integrally with the second side plate portion 53C at a position corresponding to the eleventh hole and on the opposite side of the second side plate portion 53C from the third stay 54. The nut may be separate from the second side plate portion 53C. The eleventh hole may be provided with a female thread that engages with the bolt.

[0091] The third stay 54 has a fifth positioning hole 56E and a sixth positioning hole 56F adjacent to the fifth positioning hole 56E, which are used to determine the position of the second stay 53 relative to the third stay 54. The fifth positioning hole 56E and the sixth positioning hole 56F are provided in the third vertical plate portion 54B of the third stay 54. The third positioning hole 56C and the fourth positioning hole 56D are provided in the third vertical plate portion 54B of the third stay 54, aligned in order from the sixth end portion 54D of the third stay 54 in the second direction A2. The distance from the fifth positioning hole 56E to the sixth end portion 54D of the third stay 54 is shorter than the distance from the sixth positioning hole 56F to the sixth end portion 54D of the third stay 54.

[0092] When three or more positioning holes 56 corresponding to the eleventh hole are provided in the third vertical plate portion 54B of the third stay 54, the positioning holes 56 are provided in the third vertical plate portion 54B of the third stay 54 in order from the sixth end 54D of the third stay 54 in the second direction A2. When the positioning holes 56 are numbered in order of increasing distance to the sixth end 54D of the third stay 54, the positioning holes 56 have the following relationship. The relationship between the first and second positioning holes 56 of the first set is the same as the relationship between the fifth positioning hole 56E and the sixth positioning hole 56F, and is also the same as the relationship between the second and third positioning holes 56 of the second set. Similarly, the relationship between the two positioning holes 56 of the third set is the same as the relationship between the two positioning holes 56 of the fourth set. In other words, the relationship between the two positioning holes 56 of a given set is the same as the relationship between the two positioning holes 56 of the set immediately preceding the given set.

[0093] A third distance from the fifth positioning hole 56E to the sixth positioning hole 56F is equal to or less than the length S of the ceiling hanging member mounting portion 32A over which the ceiling hanging member 11 can move. The third distance has the same dimension as the first distance X. The relationship between the third distance and the length S is the same as the relationship between the first distance X and the length S, and therefore an enlarged view is omitted.

[0094] The second stay 53 is combined with the fourth stay 55 so that the second side plate portion 53C on the fourth end portion 53E side of the second stay 53 contacts the fourth vertical plate portion 55B of the fourth stay 55. The second stay 53 is attached to the fourth stay 55 with bolts and nuts.

[0095] The second side plate portion 53C on the fourth end portion 53E side of the second stay 53 is provided with a twelfth hole into which a bolt for combining the second stay 53 with the fourth stay 55 is inserted. The position of the second stay 53 relative to the fourth stay 55 is changed by arranging the twelfth hole at a position corresponding to one of the plurality of positioning holes 56 of the fourth stay 55. A nut is provided integrally with the second side plate portion 53C at a position corresponding to the twelfth hole and on the opposite side of the second side plate portion 53C from the fourth stay 55. The nut may be separate from the second side plate portion 53C. The twelfth hole may be provided with a female thread that engages with the bolt.

[0096] The fourth stay 55 has a seventh positioning hole 56G and an eighth positioning hole 56H adjacent to the seventh positioning hole 56G, which are used to determine the position of the second stay 53 relative to the fourth stay 55. The seventh positioning hole 56G and the eighth positioning hole 56H are provided in the fourth vertical plate portion 55B of the fourth stay 55. The seventh positioning hole 56G and the eighth positioning hole 56H are provided in the fourth vertical plate portion 55B of the fourth stay 55, aligned in order from the eighth end portion 55D of the fourth stay 55 in the second direction A2. The distance from the seventh positioning hole 56G to the eighth end portion 55D of the fourth stay 55 is shorter than the distance from the eighth positioning hole 56H to the eighth end portion 55D of the fourth stay 55.

[0097] When three or more positioning holes 56 corresponding to the twelfth hole are provided in the fourth vertical plate portion 55B of the fourth stay 55, the positioning holes 56 are provided in the fourth vertical plate portion 55B of the fourth stay 55 in order from the eighth end 55D of the fourth stay 55 in the second direction A2. When the positioning holes 56 are numbered in order of increasing distance to the eighth end 55D of the fourth stay 55, the positioning holes 56 have the following relationship. The relationship between the first and second positioning holes 56 of the first set is the same as the relationship between the seventh positioning hole 56G and the eighth positioning hole 56H, and is also the same as the relationship between the second and third positioning holes 56 of the second set. Similarly, the relationship between the two positioning holes 56 of the third set is the same as the relationship between the two positioning holes 56 of the fourth set. In other words, the relationship between the two positioning holes 56 of a given set is the same as the relationship between the two positioning holes 56 of the set immediately preceding the given set.

[0098] A fourth distance from the seventh positioning hole 56G to the eighth positioning hole 56H is equal to or less than the length S by which the ceiling hanging member 11 of the ceiling hanging member mounting portion 32A can move. The fourth distance has the same dimension as the first distance X. The relationship between the fourth distance and the length S is the same as the relationship between the first distance X and the length S, and therefore an enlarged view is omitted.

[0099] In this embodiment, the first hole set 27 and the second hole set 28 are provided in the first upper plate portion 54A of the third stay 54 and the second upper plate portion 55A of the fourth stay 55. The first mounting hole 27A and the second mounting hole 27B of the first hole set 27 and the fifth mounting hole 28A and the sixth mounting hole 28B of the second hole set 28 are provided in the first upper plate portion 54A of the third stay 54. The third mounting hole 27C and the fourth mounting hole 27D of the first hole set 27 and the seventh mounting hole 28C and the eighth mounting hole 28D of the second hole set 28 are provided in the second upper plate portion 55A of the fourth stay 55.

[0100] The distance from the first mounting hole 27A to the fifth end 54C of the third stay 54 is shorter than the distance from the first mounting hole 27A to the sixth end 54D of the third stay 54. The distance from the second mounting hole 27B to the sixth end 54D of the third stay 54 is shorter than the distance from the second mounting hole 27B to the fifth end 54C of the third stay 54. The distance from the fifth mounting hole 28A to the fifth end 54C of the third stay 54 is shorter than the distance from the fifth mounting hole 28A to the sixth end 54D of the third stay 54. The distance from the sixth mounting hole 28B to the sixth end 54D of the third stay 54 is shorter than the distance from the sixth mounting hole 28B to the fifth end 54C of the third stay 54. The distance from the fifth mounting hole 28A to the fifth end 54C of the third stay 54 is shorter than the distance from the first mounting hole 27A to the fifth end 54C of the third stay 54. The distance from the sixth mounting hole 28B to the sixth end 54D of the third stay 54 is shorter than the distance from the second mounting hole 27B to the sixth end 54D of the third stay 54.

[0101] The distance from the third mounting hole 27C to the seventh end 55C of the fourth stay 55 is shorter than the distance from the third mounting hole 27C to the eighth end 55D of the fourth stay 55. The distance from the fourth mounting hole 27D to the eighth end 55D of the fourth stay 55 is shorter than the distance from the fourth mounting hole 27D to the seventh end 55C of the fourth stay 55. The distance from the seventh mounting hole 28C to the seventh end 55C of the fourth stay 55 is shorter than the distance from the seventh mounting hole 28C to the eighth end 55D of the fourth stay 55. The distance from the eighth mounting hole 28D to the eighth end 55D of the fourth stay 55 is shorter than the distance from the eighth mounting hole 28D to the seventh end 55C of the fourth stay 55. The distance from the seventh mounting hole 28C to the seventh end 55C of the fourth stay 55 is shorter than the distance from the third mounting hole 27C to the seventh end 55C of the fourth stay 55. The distance from the eighth mounting hole 28D to the eighth end 55D of the fourth stay 55 is shorter than the distance from the fourth mounting hole 27D to the eighth end 55D of the fourth stay 55.

[0102] In this embodiment, the fourth mark 43 provided on the third stay 54 is used to determine the positions of the first stay 52 and the second stay 53 relative to the third stay 54. The fifth mark 44 provided on the fourth stay 55 is used to determine the positions of the first stay 52 and the second stay 53 relative to the fourth stay 55.

[0103] [Renewal work procedure] The following describes the procedure for renovation work to replace an existing indoor unit with a new indoor unit using the support device 50 of the second embodiment. The renovation work is carried out in steps 1, 2, 3, 4, and 5. Steps 1, 2, 4, and 5 are the same as those in the first embodiment.

[0104] After the first and second steps, in the third step, the support device 20 is attached to the ceiling hanging member 11 in accordance with the pitch interval of the ceiling hanging member 11. In the third step, the positions of the first to fourth hanging fittings 30A, 30B, 30C, and 30D are adjusted to match the ceiling hanging member 11, thereby attaching the support device 20 to the ceiling hanging member 11. Furthermore, in the support device 50 of the second embodiment, the first stay 52 and the second stay 53 can be moved relative to the third stay 54 and the fourth stay 55, thereby accommodating a wider variety of pitch intervals of the ceiling hanging member 11. After the third step, the fourth and fifth steps are performed, and a new indoor unit is attached to the ceiling in the first attachment state or the second attachment state.

[0105] <Effects of the second embodiment> The effects of the second embodiment will be described. (2-1) The first stay 52 is movable relative to the third stay 54 and the fourth stay 55 in the longitudinal direction of the third stay 54 and the fourth stay 55. The second stay 53 is movable relative to the third stay 54 and the fourth stay 55 in the longitudinal direction of the third stay 54 and the fourth stay 55.

[0106] According to the above configuration, the support device 50 can finely adjust the position of the hoisting fitting 30 by moving the first stay 52 and the second stay 53 relative to the third stay 54 and the fourth stay 55.

[0107] (2-2) The hanging bracket 30 extends in the longitudinal direction of the third stay 54 and the fourth stay 55 and has a ceiling hanging member mounting portion 32A to which the ceiling hanging member 11 is attached. The third stay 54 has a first positioning hole 56A for determining the position of the first stay 52 relative to the third stay 54 and a second positioning hole 56B provided adjacent to the first positioning hole 56A. The fourth stay 55 has a third positioning hole 56C for determining the position of the first stay 52 relative to the fourth stay 55 and a fourth positioning hole 56D provided adjacent to the third positioning hole 56C. A first distance X from the first positioning hole 56A to the second positioning hole 56B is equal to or less than a length S of the ceiling hanging member mounting portion 32A in the longitudinal direction of the third stay 54 and the fourth stay 55 that the ceiling hanging member 11 can move. A second distance from the third positioning hole 56C to the fourth positioning hole 56D is equal to or less than the length S.

[0108] According to the above configuration, the support device 50 can finely adjust the position of the hanging fitting 30 attached to the first stay 52.

[0109] (2-3) The third stay 54 has a fifth positioning hole 56E and a sixth positioning hole 56F adjacent to the fifth positioning hole 56E for determining the position of the second stay 53 relative to the third stay 54. The fourth stay 55 has a seventh positioning hole 56G and an eighth positioning hole 56H adjacent to the seventh positioning hole 56G for determining the position of the second stay 53 relative to the fourth stay 55. A third distance from the fifth positioning hole 56E to the sixth positioning hole 56F is equal to or less than the length S. A fourth distance from the seventh positioning hole 56G to the eighth positioning hole 56H is equal to or less than the length S.

[0110] According to the above configuration, the support device 50 can finely adjust the position of the suspending fitting 30 attached to the second stay 53.

[0111] (2-4) The third stay 54 is provided with a fourth mark 43 for determining the positions of the first stay 52 and the second stay 53 relative to the third stay 54. The fourth stay 55 is provided with a fifth mark 44 for determining the positions of the first stay 52 and the second stay 53 relative to the fourth stay 55.

[0112] According to the above configuration, the support device 50 can suitably adjust the positions of the first stay 52 and the second stay 53 relative to the third stay 54 by using the fourth mark 43. Furthermore, according to the above configuration, the support device 50 can suitably adjust the positions of the first stay 52 and the second stay 53 relative to the fourth stay 55 by using the fifth mark 44.

[0113] <Example of change> In addition to the above-described embodiments, the support device of the present disclosure may also be configured in the following modified examples, or in a form that combines at least two modified examples that are not mutually contradictory.

[0114] The object suspended by the support structure may be an air purifier.

[0115] In addition to the first hole set 27 and the second hole set 28, the indoor unit hanging member mounting portion 26 may further have a third hole set for mounting the indoor unit 1 to the ceiling in a third mounting state different from the first and second mounting states. The third mounting state is, for example, a mounting state in which the indoor unit 1 is rotated from the first mounting state by an angle different from that of the second mounting state.

[0116] In the support device 50 of the second embodiment, the third stay 54 may be configured to be movable relative to the first stay 52 and the second stay 53, and the fourth stay 55 may be configured to be movable relative to the first stay 52 and the second stay 53.

[0117] The first stay 22 may be provided with a mark different from the first mark 40 for determining the position of the hanging fitting 30 relative to the first stay 22.

[0118] The second stay 23 may be provided with a mark different from the second mark 41 for determining the position of the sling 30 relative to the second stay 23.

[0119] Although various embodiments of the support device and modified examples thereof have been described above, it will be understood that various modifications in form and details are possible without departing from the spirit and scope of the support device as set forth in the claims.

[0120] As used in this specification, ordinal numbers such as "first, second, and third" are used merely to distinguish between multiple elements having the same name and do not have any special meaning. [Explanation of symbols]

[0121] 1...indoor unit, 11...ceiling hanging member, 12...indoor unit hanging member, 20,50...support device, 21,51...support member, 22,52...first stay, 23,53...second stay, 24,54...third stay, 25,55...fourth stay, 26...indoor unit hanging member mounting portion, 27...first hole set, 28...second hole set, 30...hanging hardware, 32A...ceiling hanging member mounting portion, 40...first mark, 41...second mark, 42...third mark, 43...fourth mark, 44...fifth mark, 56A...first positioning hole, 56B...second positioning hole, 56C...third positioning hole, 56D...fourth positioning hole, 56E...fifth positioning hole, 56F...sixth positioning hole, 56G...seventh positioning hole, 56H...eighth positioning hole.

Claims

1. A support device (20) that supports an indoor unit (1) of an air conditioner while suspending it from a ceiling, A support member (21); and a hanging fitting (30) to which a ceiling hanging member (11) extending from the ceiling is attached, The support member (21) a first stay (22) and a second stay (23) extending parallel to each other; a third stay (24) and a fourth stay (25) that intersect the first stay (22) and the second stay (23) and extend parallel to each other; an indoor unit suspension member mounting portion (26) to which an indoor unit suspension member (12) for mounting the indoor unit (1) is attached, The hoisting fitting (30) is provided on the first stay (22) and the second stay (23), and is configured to be movable relative to the first stay (22) and the second stay (23) in the longitudinal direction of the first stay (22) and the second stay (23), The indoor unit hanging member mounting portion (26) has a first hole set (27) for mounting the indoor unit (1) to the ceiling in a first mounting state, and a second hole set (28) for mounting the indoor unit (1) to the ceiling in a second mounting state different from the first mounting state. Support device.

2. The second mounting state is a mounting state in which the indoor unit (1) is rotated by a predetermined angle from the first mounting state. The support device of claim 1 .

3. The predetermined angle is 90 degrees. The support device of claim 2 .

4. The first stay (22) is movable relative to the third stay (54) and the fourth stay (55) in the longitudinal direction of the third stay (54) and the fourth stay (55), The second stay (53) is movable relative to the third stay (54) and the fourth stay (55) in the longitudinal direction of the third stay (54) and the fourth stay (55). The support device of claim 1 .

5. The hanging fitting (30) extends in the longitudinal direction of the third stay (54) and the fourth stay (55), and has a ceiling hanging member mounting portion (32A) to which the ceiling hanging member (11) is attached, The third stay (54) has a first positioning hole (56A) for determining the position of the first stay (52) relative to the third stay (54) and a second positioning hole (56B) provided adjacent to the first positioning hole (56A), The fourth stay (55) has a third positioning hole (56C) for determining the position of the first stay (52) relative to the fourth stay (55), and a fourth positioning hole (56D) provided adjacent to the third positioning hole (56C), a first distance (X) from the first positioning hole (56A) to the second positioning hole (56B) is equal to or less than a length (S) of the ceiling hanging member mounting portion (32A) along the longitudinal direction of the third stay (54) and the fourth stay (55) that allows the ceiling hanging member (11) to move; A second distance from the third positioning hole (56C) to the fourth positioning hole (56D) is equal to or less than the length (S).

5. The support device of claim 4.

6. The third stay (54) has a fifth positioning hole (56E) for determining the position of the second stay (53) relative to the third stay (54) and a sixth positioning hole (56F) provided adjacent to the fifth positioning hole (56E), The fourth stay (55) has a seventh positioning hole (56G) and an eighth positioning hole (56H) provided adjacent to the seventh positioning hole (56G) for determining the position of the second stay (53) relative to the fourth stay (55), a third distance from the fifth positioning hole (56E) to the sixth positioning hole (56F) is equal to or less than the length (S); A fourth distance from the seventh positioning hole (56G) to the eighth positioning hole (56H) is equal to or less than the length (S).

6. The support device of claim 5.

7. The first stay (52) is provided with a first mark (40) for determining the position of the hanging fitting (30) relative to the first stay (52), The second stay (53) is provided with a second mark (41) for determining the position of the hanging fitting (30) relative to the second stay (53), The hanging fitting (30) is provided with a third mark (42) for determining the position of the hanging fitting (30) relative to the first stay (52) and the second stay (53). The support device of claim 1 .

8. The third stay (54) is provided with a fourth mark (43) for determining the positions of the first stay (52) and the second stay (53) relative to the third stay (54), The fourth stay (55) is provided with a fifth mark (44) for determining the positions of the first stay (52) and the second stay (53) relative to the fourth stay (55). The support device of claim 1 .

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