Support device and construction method

Abstract

To suppress a lowering of conveyance efficiency and to efficiently perform an installation work of a ceiling suspended object at a construction site.SOLUTION: A support device 1 for supporting a ceiling suspended object in a suspended state is provided with a suspended member 2 extending upward in a vertical direction from a position near the upper surface of the ceiling suspended object, a support member 3 for supporting the side surface of the ceiling suspended object, and a connecting member 4 for mutually connecting the lower end part of the suspended member 2 and the upper end part of the support member 3. The connecting member 4 can be folded from a state where the suspended member 2 is erected upward in the vertical direction to a state where it is tilted. As a result, the support device 1 can be conveyed from a factory to a construction site in a folded state, a lowering in conveyance efficiency can be suppressed, and installation work of a ceiling suspended object can be efficiently performed at the construction site.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a support device for supporting a ceiling-suspended object such as an air conditioner while hanging it in a ceiling space, and to an installation method using the same. [Background technology]

[0002] Conventionally, as a support device for supporting a ceiling-suspended object such as an air conditioner while hanging it at a predetermined height in the ceiling space, a device is known in which a suspension bolt is attached to the underside of an upper floor structure such as a floor slab forming the floor of the upper floor, the lower end of the suspension bolt is connected to a frame body in a grid shape, and a support bolt hanging from the frame body is connected to the side of the ceiling-suspended object to support the ceiling-suspended object (for example, Patent Documents 1 and 2). In this type of support device, when the gap between the underside of the upper floor structure and the ceiling-suspended object is relatively large, a brace bolt is placed in advance between two adjacent suspension bolts as a diagonal reinforcement, thereby suppressing the vibration of the suspension bolts in the event of an earthquake. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-12344 A [Patent Document 2] Patent No. 6709485 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the past, at the construction site where the ceiling-hanging object is to be installed, it was necessary to create a support device by assembling each part, and then attach the support device to the ceiling-hanging object, and it took a lot of time to attach the support device to the ceiling-hanging object. In particular, this type of support device requires a certain level of skill from the worker to properly attach it to the ceiling-hanging object within a specified time. In other words, if a worker with low skill performs the work, it is not possible to complete the work within the specified time, and the work time tends to be extended.

[0005] For example, when multiple ceiling-suspended objects must be installed on one floor, such as at a construction site for a large-scale building, the work of assembling support devices for the ceiling-suspended objects takes a lot of time, which impedes the execution of other work on the same floor. In recent years, it has become particularly difficult to secure highly skilled workers at construction sites, leading to situations where work is easily delayed, which is a factor that has a major impact on construction plans.

[0006] As a method for efficiently installing ceiling-suspended objects, the first method is to assemble each part in advance at a factory to make a complete support device, and then transport the completed device to the construction site. In this case, the work of assembling each part to create the support device at the construction site can be reduced. However, on the other hand, since the completed support device has a three-dimensional shape, it has a large volume. Therefore, it is not possible to load many support devices onto a transportation vehicle, which leads to a problem of increased costs due to reduced transportation efficiency.

[0007] Secondly, a method is conceivable in which each part is assembled in advance in a factory to make a complete support device, and then the support device is attached to a ceiling-hanging object in the factory to form an integrated unit, and the integrated unit is transported to the construction site. In this case, both the work of assembling each part to create the support device and the work of attaching the support device to the ceiling-hanging object at the construction site can be reduced. Therefore, at the construction site, it is only necessary to attach the integrated unit transported from the factory to the underside of the upper floor structure. However, even in this case, the integrated unit assembled with the support device and the ceiling-hanging object has a relatively large three-dimensional shape, so its volume is large. Therefore, the same problem occurs that many integrated units cannot be loaded onto a transport vehicle, leading to increased costs due to reduced transport efficiency.

[0008] Therefore, the present invention has been made to solve the above-mentioned problems in the conventional art, and aims to provide a support device that suppresses a decrease in transport efficiency and enables efficient installation work of ceiling-suspended objects at a construction site, and a construction method using the support device. [Means for solving the problem]

[0009] In order to achieve the above object, first, the present invention provides a support device for supporting a ceiling-suspended object in a suspended state, the support device comprising: a suspension member extending vertically upward from a position near the upper surface of the ceiling-suspended object; a support member supporting a side surface of the ceiling-suspended object; and a connecting member connecting a lower end of the suspension member and an upper end of the support member to each other, the connecting member being: The fastening member is rotated around a horizontal axis when the fastening member is in a temporarily fastened state. The hanging member can be folded from a vertically upward standing state to a tilted state. and wherein the fastening members are fully fastened with the hanging member standing upright in the vertical direction so that the hanging member does not rotate about the horizontal axis, and the hanging member is fixed in the vertically upward standing state. It is a composition.

[0011] No. 2 In particular, the present invention relates to the above-mentioned 1 ofIn a support device having this configuration, the connecting member comprises a first frame member arranged in a first direction near the top surface of the ceiling-suspended object, and a second frame member arranged in a second direction perpendicular to the first frame member near the top surface of the ceiling-suspended object, and the upper end of the support member is connected to the first frame member, and the lower end of the suspension member is connected to the second frame member.

[0012] No. 3 In particular, the present invention relates to the above-mentioned 2 In the support device having the above configuration, the connecting member further includes a holding member whose lower portion is connected to the first frame member and whose upper portion supports the second frame member, thereby holding the first frame member and the second frame member at different height positions, and the holding member is configured to be able to fold the hanging member into a tilted state by rotating around a horizontal axis when the connection portion connected to the first frame member is in a temporarily fixed state.

[0013] No. 4 The present invention relates to the above first to third aspects. 3 In a support device having any one of the above configurations, the hanging member includes a plurality of hanging bolts arranged at the four corners of a rectangle when viewed in plan, and a plurality of brace bolts arranged between two adjacent hanging bolts among the plurality of hanging bolts, and the connecting member is configured to be able to fold the hanging member when a brace bolt among the plurality of brace bolts that is arranged parallel to the direction in which the hanging member is tilted is not attached.

[0014] No. 5 In particular, the present invention relates to the above-mentioned 4 In the support device having the above configuration, a ceiling mounting bracket capable of being received by a bolt member hanging down from the underside of the upper floor structure is pre-attached to the upper end of the suspension bolt.

[0015] No. 6 The present invention relates to the above first to third aspects. 5A construction method for constructing a ceiling-suspended object in a suspended state on the underside of an upper floor structure using a support device having any one of the above configurations, comprising: a first step of attaching the support device to the ceiling-suspended object in a factory and folding the suspension member to the upper side of the ceiling-suspended object; a second step of transporting the ceiling-suspended object to which the support device is attached in the first step from the factory to a construction site; and a second step of transporting the ceiling-suspended object to which the support device is attached in the first step from the factory to a construction site. The fastening member is completely fastened, so that the hanging member is vertically upwardly erected from the connecting member. The method is characterized by having a third step of fixing the ceiling-suspended object, and a fourth step of lifting the ceiling-suspended object with the hanging member in an upright position and attaching the hanging member to the underside of the upper floor structure.

[0016] No. 7 The present invention relates to the above first to third aspects. 5 A construction method for constructing a ceiling-suspended object in a suspended state from the underside of an upper floor structure using a support device having any one of the above configurations, comprising: a first step of tilting the suspension member of the support device in a folded state in a factory; a second step of transporting the support device with the suspension member folded in the first step from the factory to a construction site; and a second step of attaching the support device to the ceiling-suspended object at the construction site, wherein the support device is attached to the ceiling-suspended object and the suspension member is erected vertically upward from the connecting member. The fastening member is completely fastened, so that the hanging member is vertically upwardly erected from the connecting member. The method is characterized by having a third step of fixing the ceiling-suspended object, and a fourth step of lifting the ceiling-suspended object with the hanging member in an upright position and attaching the hanging member to the underside of the upper floor structure. Effect of the Invention

[0017] According to the present invention, the support device can be transported from the factory to the construction site in a folded state, thereby suppressing a decrease in transportation efficiency and enabling efficient installation work of ceiling-suspended objects at the construction site. [Brief description of the drawings]

[0018] [Figure 1]FIG. 2 is a perspective view showing a state in which the support device of the first embodiment is assembled to an air conditioner. [Diagram 2] FIG. 2 is a front view showing the support device assembled to the air conditioner. [Diagram 3] FIG. 4 is a side view showing the support device assembled to the air conditioner. [Figure 4] FIG. 4 is a perspective view showing a configuration example of a rotating member. [Diagram 5] 11A and 11B are diagrams illustrating changes in posture of a connecting member caused by a rotating member. [Figure 6] 13 is a diagram showing the state in which brace bolts arranged on the front and rear sides of the air conditioner have been removed from the support device attached to the air conditioner. FIG. [Figure 7] 13 is a diagram showing a state in which one of the two hanging members arranged on both the left and right sides is tilted toward the upper surface of the air conditioner and folded. FIG. [Figure 8] 13 is a diagram showing the state in which both hanging members are tilted toward the upper surface of the air conditioner and folded down. FIG. [Figure 9] FIG. 11 is a perspective view showing a state in which a support device of a second embodiment is assembled to an air conditioner. [Figure 10] FIG. 2 is a front view showing the support device assembled to the air conditioner. [Figure 11] FIG. 4 is a side view showing the support device assembled to the air conditioner. [Figure 12] FIG. 4 is an enlarged view showing a mounting manner of the holding member. [Figure 13] 13 is a view showing a state in which the holding member connects the first frame member and the second frame member to each other. FIG. [Figure 14] 13A and 13B are diagrams illustrating a change in the posture of the connecting member when the holding member is temporarily fixed. [Figure 15] 13A and 13B are diagrams illustrating a change in the posture of the connecting member when the holding member is temporarily fixed. [Figure 16] 11A and 11B are diagrams showing a mounting manner of the support bracket. [Figure 17] 11A and 11B are diagrams illustrating changes in the attitude of a support bolt. [Figure 18]13 is a diagram showing the state in which brace bolts arranged on the front and rear sides of the air conditioner have been removed from the support device attached to the air conditioner. FIG. [Figure 19] 13 is a diagram showing a state in which one of the two hanging members arranged on both the left and right side surfaces is tilted toward the upper surface of the air conditioner and folded down. FIG. [Figure 20] 13 is a diagram showing the state in which both hanging members are tilted toward the upper surface of the air conditioner and folded down. FIG. [Figure 21] FIG. 13 is a view showing the support device with the hanging member folded. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the drawings referred to below, the same reference numerals are used to designate common members, and redundant description thereof will be omitted.

[0020] (First embodiment) First, a first embodiment of the present invention will be described. FIG. 1 is a perspective view showing a support device 1 in the first embodiment of the present invention. This support device 1 is a device that supports a ceiling-suspended object in a state where it is suspended in a ceiling space, and is suspended in the ceiling space in the manner shown in FIG. 1. In this embodiment, a concealed air conditioner 100 is exemplified as a ceiling-suspended object. The concealed air conditioner 100 is an air conditioner that is installed in a concealed state in a ceiling space between an upper floor structure such as a floor slab or deck plate that forms the floor of the upper floor and a ceiling panel. FIG. 1 shows a state in which the support device 1 is assembled to the air conditioner 100. FIG. 2 is a front view of the support device 1 shown in FIG. 1, and FIG. 3 is a side view of the support device 1 shown in FIG. The XYZ three-dimensional coordinate system shown in each of these figures is a coordinate system in which the XY plane is the horizontal plane and the Z direction is the vertical direction, and is a coordinate system common to each of the figures. The three-dimensional coordinate systems shown in the other figures are similar.

[0021] The air conditioner 100, which is a ceiling-suspended object, is a box-shaped unit that is generally rectangular in plan view. In this embodiment, the left-right direction of the air conditioner 100 is a direction parallel to the X direction in an XYZ three-dimensional coordinate system, and the front-rear direction is a direction parallel to the Y direction in the same coordinate system. The air conditioner 100 has connection parts 101 for connecting bolt members on both the left and right sides. The air conditioner 100 also has an intake port 105 on the rear side for drawing in air, and an outlet port 104 on the front side for blowing out conditioned air.

[0022] The support device 1 comprises a hanging member 2 extending vertically upward from a position near the top surface of the air conditioner 100, a support member 3 supporting the side surface of the air conditioner 100, and a connecting member 4 connecting the lower end of the hanging member 2 and the upper end of the support member 3 to each other.

[0023] The hanging member 2 includes a plurality of hanging bolts 11 arranged along the vertical direction. These hanging bolts 11 are bolts for suspending the air conditioner 100 in the ceiling space. For example, the hanging bolts 11 are formed of a 3 / 4 bolt member, and are cut in advance to an appropriate length according to the installation height position of the air conditioner 100. In this embodiment, the hanging member 2 includes four hanging bolts 11. These four hanging bolts 11 are respectively arranged at the four corner positions of a rectangle in a plan view.

[0024] A ceiling mounting bracket 15 is attached to the upper end of the hanging bolt 11 for mounting to a bolt member hanging down on the underside of the upper floor structure. This ceiling mounting bracket 15 is a bracket for connecting the upper end of the hanging bolt 11 to a bolt member that is previously attached to the upper floor structure. For example, the ceiling mounting bracket 15 is similar to the "ceiling installation bracket" described in JP 2020-12344 A. That is, the ceiling mounting bracket 15 has a mounting hole into which a bolt member attached to the upper floor structure can be inserted, and is a bracket that can rotate around the axis of the hanging bolt 11 to match the mounting hole to the position of the bolt member and insert the bolt member into the mounting hole. By attaching the ceiling mounting bracket 15 to the upper end of the hanging bolt 11, it is possible to lift the integrated unit in which the support device 1 is assembled to the air conditioner 100 from the floor surface as it is and attach it to the underside of the upper floor structure. In other words, by providing the ceiling mounting bracket 15 to the upper end of the hanging bolt 11, it becomes possible to assemble the supporting device 1 to the air conditioner 100 before suspending the supporting device 1 in the ceiling space. Also, the lower end of the hanging bolt 11 is fixed to the connecting member 4.

[0025] In the hanging member 2, when the length of the hanging bolt 11 is a predetermined length (for example, about 50 cm) or more, as shown in FIG. 1, a brace bolt 12 serving as a diagonal reinforcement is disposed between two adjacent hanging bolts 11, 11 among the multiple hanging bolts 11. For example, the brace bolt 12 is formed of a 3 / 4 bolt member having the same diameter as the hanging bolt 11, and is pre-cut to a length required to diagonally cross between the two hanging bolts 11, 11. Such a brace bolt 12 is disposed at a position corresponding to each side of a rectangle in a plan view. In addition, two brace bolts 12, 12 are disposed between the two hanging bolts 11, 11 so as to cross each other. Brace connecting fittings 13 are attached to two positions at the top and bottom of the hanging bolt 11. The brace connecting fitting 13 is an L-shaped fitting, and its corner portion is fixed to the hanging bolt 11, and the brace bolt 12 can be fixed to a flat plate portion extending from the corner portion in a perpendicular direction in the XY plane. Both ends of the brace bolt 12 are fixed to the brace connecting metal fittings 13. That is, one end of the brace bolt 12 is fixed to the brace connecting metal fitting 13 attached to the upper part of one of the hanging bolts 11, and the other end is fixed to the brace connecting metal fitting 13 attached to the lower part of the other hanging bolt. As a result, the four hanging bolts 11 are reinforced in a state where they are mutually connected by a total of eight brace bolts 12, and the earthquake resistance strength is increased. Therefore, even if an earthquake occurs when the length of the hanging bolts 11 is a predetermined length or more, the swing width of the hanging bolts 11 can be suppressed to be small. It is more preferable to attach a cross connecting metal fitting (not shown) to the intersection 14 where the two brace bolts 12, 12 cross each other to fix the intersection 14 of the two brace bolts 12, 12 to each other.

[0026] Furthermore, if the length of the hanging bolt 11 is less than a specified length, even if an earthquake occurs, the swing range of the hanging bolt 11 is small, so it is also possible to configure the structure so that the brace bolt 12 is not placed between two adjacent hanging bolts 11, 11.

[0027] The support member 3 is constituted by a support bolt 16. For example, the support bolt 16 is constituted by a bolt member of 3 / 4 diameter having the same diameter as the hanging bolt 11. The upper end of the support bolt 16 is fixed to the connecting member 4. The support bolt 16 is also arranged in the vertical direction parallel to the side surface of the air conditioner 100 at a position separated by a predetermined distance from the side surface of the air conditioner 100. The lower end of the support bolt 16 is connected to and fixed to a connection part 101 provided at the lower part of both the left and right sides of the air conditioner 100. For example, the connection part 101 has a flat plate part provided with a U-shaped notch, and the lower end of the support bolt 16 is inserted into the notch and fixed to the connection part 101 by fastening the flat plate part between two nuts. As a result, the support member 3 is in a state of supporting the side surface of the air conditioner 100.

[0028] The connecting member 4 includes a rotating member 17 that is rotatable around a predetermined horizontal axis when in a temporarily fastened state. Fig. 4 is a perspective view showing a configuration example of the rotating member 17. This rotating member 17 includes a first member 21, a second member 22, a bolt 23, and a nut 24.

[0029] The first member 21 is a member for fixing the lower end of the hanging bolt 11, and is formed as a metal fitting having a generally U-shape as a whole. That is, the first member 21 includes two wall portions 211, 212 facing each other, and a flat plate portion 213 connecting the ends of the two wall portions 211, 212. At the center of the two wall portions 211, 212, holes 21a, 21b are formed through which the shaft portion of the bolt 23 is inserted. At the center of the flat plate portion 213, a hole 21c is formed through which the lower end of the hanging bolt 11 is inserted. The lower end of the hanging bolt 11 is inserted through the hole 21c of the flat plate portion 213, and is fixed to the flat plate portion 213 of the first member 21 by fastening two nuts 25a, 25b attached to the hanging bolt 11 in a state in which the flat plate portion 213 is sandwiched between them.

[0030] The second member 22 is a member for fixing the upper end of the support bolt 16, and is formed as a metal fitting having a generally U-shape as a whole, similar to the first member 21. That is, the second member 22 includes two walls 221, 222 facing each other, and a flat plate portion 223 connecting the ends of the two walls 221, 222. For example, the distance between the outer surfaces of the two walls 221, 222 is formed to be the same as the distance between the inner surfaces of the two walls 211, 212 of the first member 21, or a distance slightly smaller than that. In addition, it is preferable that the tip corners of the two walls 211, 222 are chamfered to have an R shape. In the center of the two walls 221, 222, holes 22a, 22b through which the shaft portion of the bolt 23 is inserted are formed. In addition, in the center of the flat plate portion 223, a hole 22c through which the upper end of the support bolt 16 is inserted is formed. The upper end of the support bolt 16 is inserted through hole 22c of the flat portion 223, and is fixed to the flat portion 223 of the second member 22 by tightening two nuts 25c, 25d attached to the support bolt 16 while sandwiching the flat portion 223.

[0031] The second member 22 is fitted so that the two walls 221, 222 are disposed inside the two walls 211, 212 of the first member 21, and the holes 22a, 22b formed in the two walls 221, 222 communicate with the holes 21a, 21b formed in the first member 21. In this state, the shaft of the bolt 23 is inserted into the holes 21a, 22a, 22b, 21b formed in the first member 21 and the second member 22, and the nut 24 is attached to the shaft of the bolt 23. When the bolt 23 and the nut 24 are in a provisionally fastened state, the first member 21 and the second member 22 are in a state in which they can rotate relatively around the shaft of the bolt 23. On the other hand, when the bolt 23 and the nut 24 are in a completely fastened state in which they are tightly fastened, the first member 21 and the second member 22 are in a fixed state in which they do not rotate relatively around the shaft of the bolt 23.

[0032] FIG. 5 is a diagram showing a change in the posture of the connecting member 4 formed by the rotating member 17. When the bolt 23 and the nut 24 of the rotating member 17 are in a provisionally fixed state, the rotating member 17 changes its posture between a first state shown in FIG. 5(a) and a second state shown in FIG. 5(b) by relatively rotating the first member 21 and the second member 22 about the shaft of the bolt 23. When the rotating member 17 is in the first state, the hanging bolt 11 and the support bolt 16 are positioned on the same straight line along the vertical direction. In contrast, when the rotating member 17 is in the second state, the hanging bolt 11 and the support bolt 16 are not on the same straight line with each other, but are bent via the rotating member 17. In other words, the rotating member 17 can change the posture of the hanging bolt 11 with respect to the support bolt 16 from the first state to the second state by provisionally fixing the bolt 23 and the nut 24. Furthermore, by completely fastening the bolt 23 and the nut 24, the rotating member 17 can completely fix the suspension bolt 11 with respect to the support bolt 16 in the first position.

[0033] Therefore, the connecting member 4 of this embodiment can fold the hanging member 2 from a state in which it is erected vertically upward to a state in which it is tilted toward the upper surface side of the air conditioner 100, by using the function of the rotating member 17 as described above. The support device 1 of this embodiment makes it possible to attach the support device 1 to the air conditioner 100 in a factory by using such connecting member 4, and to fold the hanging member 2 toward the upper surface side of the air conditioner 100 when transporting it from the factory to the construction site. This reduces the volume of the support device 1 attached to the air conditioner 100, making it possible to load more support devices onto a transport vehicle, thereby improving transport efficiency compared to conventional methods.

[0034] 6 is a diagram showing a state in which the brace bolts 12 arranged on the front and rear sides of the air conditioner 100 have been removed from the support device 1 assembled to the air conditioner 100. When the brace bolts 12 arranged on two parallel surfaces in this manner are not attached, the support device 1 can fold the hanging member 2 onto the upper surface side of the air conditioner 100 by temporarily fastening the bolts 23 and nuts 24 of the rotating member 17. The support device 1 is capable of folding the hanging member 2 when, of the multiple brace bolts 12 assembled to the hanging member 2, the brace bolts 12 arranged in a surface parallel to the direction in which the hanging member 2 is tilted are not attached.

[0035] FIG. 7 is a diagram showing a state in which one of the two hanging members 2 arranged on both the left and right side surfaces is inclined toward the upper surface side of the air conditioner 100 and folded. FIG. 8 is a diagram showing a state in which both of the two hanging members 2 are inclined toward the upper surface side of the air conditioner 100 and folded. For example, the rotating member 17 connected to the lower end of the two hanging members 2, 2 arranged on both the left and right side surfaces of the air conditioner 100 is temporarily fixed, and the two hanging members 2, 2 are folded one by one in order, whereby the position of the support device 1 can be changed from the position shown in FIG. 6 to the position shown in FIG. 7, and further changed from the position shown in FIG. 7 to the position shown in FIG. 8. When the hanging members 2 of the support device 1 are folded toward the upper surface side of the air conditioner 100 as shown in FIG. 8, the volume occupied by the hanging members 2 in the support device 1 can be reduced. In other words, the volume of the state in which the support device 1 is assembled to the air conditioner 100 can be regarded as almost the same as the volume of the air conditioner 100 alone. Therefore, by folding the hanging members 2 onto the upper surface side of the air conditioner 100 as shown in Fig. 8, a larger number of air conditioners 100 with the support device 1 attached thereto can be loaded onto the bed of a transport vehicle than before. For example, it becomes possible to load multiple air conditioners 100 shown in Fig. 8 in a vertical manner onto the bed of a transport vehicle.

[0036] As described above, the support device 1 of this embodiment includes the hanging member 2 extending vertically upward from a position near the upper surface of the air conditioner 100, the support member 3 supporting the side surface of the air conditioner 100, and the connecting member 4 connecting the lower end of the hanging member 2 and the upper end of the support member 3 to each other, and the connecting member 4 is configured to be foldable from a state in which the hanging member 2 is erected vertically upward to a tilted state. The support device 1 having such a configuration can reduce the volume occupied by the support device 1 by folding the hanging member 2 in a tilted state while assembled to the air conditioner 100. Therefore, it is possible to suppress a decrease in the transportation efficiency when the support device 1 is assembled to the air conditioner 100 in advance at the factory and transported from the factory to the construction site in a folded state of the hanging member 2. Then, at the construction site, the hanging member 2 in a tilted state is fixed in a vertically erected state, and the support device 1 is completed simply by additionally attaching the brace bolt 12. Therefore, the workload for creating the support device 1 at the construction site can be reduced more than ever before. Therefore, even if the number of highly skilled workers at the construction site is small, the workload is reduced, so that delays in work can be prevented in advance.

[0037] Then, at the construction site, when the support device 1 assembled to the air conditioner 100 is completed, the air conditioner 100 is lifted using a lifting platform or the like, and the ceiling mounting bracket 15 attached to the upper end of the hanging member 2 is fixed to a bolt member hanging down from the underside of the upper floor structure. As a result, the air conditioner 100 is installed in a state where it is suspended in the ceiling space. Therefore, by using the support device 1 of this embodiment, the installation work of the air conditioner 100 at the construction site can be carried out efficiently.

[0038] Second embodiment Next, a second embodiment of the present invention will be described. Fig. 9 is a perspective view showing a support device 1 in the second embodiment of the present invention. Fig. 9 shows a state in which the support device 1 is assembled to an air conditioner 100. The support device 1 is suspended in the ceiling space in the manner shown in Fig. 9. Fig. 10 is a front view of the support device 1 shown in Fig. 9, and Fig. 11 is a side view of the support device 1 shown in Fig. 9.

[0039] In this embodiment, a concealed air conditioner 120 is exemplified as a ceiling hanging object. This air conditioner 120 is a concealed air conditioner like the first embodiment, and includes an air conditioner body 130, a blow-out chamber 140, and an intake chamber 150. The air conditioner body 130 has the same configuration as the air conditioner 100 described in the first embodiment. However, the air conditioner body 130 of this embodiment includes a filter unit 135 on the rear side. The intake chamber 150 is connected to the rear side of the filter unit 135. This intake chamber 150 is a box-shaped unit with a hollow interior, and a duct connection part (not shown) is provided on at least one side of the intake chamber 150, to which a duct for taking in outside air is connected. In addition, the blow-out chamber 140 is connected to the front side of the air conditioner body 130. The blow-out chamber 140 is also a hollow box-shaped unit, and is connected to a plurality of ducts (not shown) for supplying the air conditioned in the air conditioner main body 130 to the room.

[0040] The support device 1 of this embodiment supports the air conditioner 120, in which the blow-out chamber 140 and the intake chamber 150 are attached in the front-rear direction of the air conditioner main body 130 as described above, in a suspended state in the ceiling space. This support device 1 comprises a hanging member 2 extending vertically upward from a position near the top surface of the air conditioner 120, a support member 3 supporting the side surface of the air conditioner main body 130, a connecting member 4 connecting the lower end of the hanging member 2 and the upper end of the support member 3 to each other, and a support member 5 supporting the end faces of the blow-out chamber 140 and the intake chamber 150.

[0041] The hanging member 2 includes a plurality of hanging bolts 11 arranged along the vertical direction. These multiple hanging bolts 11 are bolts for suspending the air conditioner 120 from the ceiling space, and are similar to those described in the first embodiment. This embodiment also illustrates an example in which the hanging member 2 includes four hanging bolts 11. These four hanging bolts 11 are respectively arranged at the four corners of a rectangle in a plan view.

[0042] As in the first embodiment, a ceiling mounting bracket 15 is attached to the upper end of the hanging bolt 11 for mounting to a bolt member hanging down on the underside of the upper floor structure. By providing the ceiling mounting bracket 15 to the upper end of the hanging bolt 11, it becomes possible to assemble the support device 1 to the air conditioner 120 before suspending the support device 1 in the ceiling space. In addition, the lower end of the hanging bolt 11 is fixed to the connecting member 4.

[0043] Moreover, in this embodiment, the length of the hanging bolts 11 is a predetermined length (for example, about 50 cm) or more. Therefore, as shown in Fig. 9, among the multiple hanging bolts 11, brace bolts 12 serving as diagonal reinforcement members are disposed between two adjacent hanging bolts 11, 11. The manner in which the brace bolts 12 are attached to the hanging bolts 11 is the same as in the first embodiment. That is, the brace bolts 12 are attached in a crossing state within four planes parallel to the front, rear, and both left and right sides of the air conditioner 120.

[0044] When the length of the suspension bolts 11 is less than a predetermined length, the brace bolt 12 may not be disposed between two adjacent suspension bolts 11, 11.

[0045] The support member 3 is constituted by a support bolt 16. The upper end of the support bolt 16 is fixed to the connecting member 4. The support bolt 16 is arranged in the vertical direction parallel to the side surface of the air conditioner body 130 at a position spaced a predetermined distance from the side surface of the air conditioner body 130. The lower end of the support bolt 16 is connected to and fixed to a connection portion 131 provided at the lower part of both the left and right sides of the air conditioner body 130. The attachment mode of the support bolt 16 to the connection portion 131 is the same as that described in the first embodiment. The upper end of the support bolt 16 is fixed to the connecting member 4.

[0046] The connecting member 4 of this embodiment is configured to include a frame body 30. The frame body 30 includes a pair of first frame members 31, 31 arranged along a first direction (X direction) near the upper surface of the air conditioner 120, and a pair of second frame members 32, 32 arranged along a second direction (Y direction) perpendicular to the first frame members 31, 31 near the upper surface of the air conditioner 120, and is configured by assembling the first frame members 31, 31 and the second frame members 32, 32 in a grid shape. For example, each of the first frame members 31, 31 and the second frame members 32, 32 is configured from a metal angle bar with an L-shaped cross section, and includes a vertical plate portion and a horizontal plate portion that form a right angle with each other.

[0047] For example, the first frame members 31, 31 are longer than the length of the air conditioner main body 130 in the left-right direction (X direction), and are arranged in a state in which the horizontal plate portion is joined to the upper surface of the air conditioner main body 130 and both ends protrude on both the left and right sides of the air conditioner main body 130. In addition, both ends of the first frame members 31, 31 are arranged at positions above the connection portions 131 provided on both the left and right sides of the air conditioner main body 130. The upper ends of the support bolts 16 provided as the support members 3 are connected and fixed to the horizontal plate portions of both protruding ends of the first frame members 31, 31. For example, holes through which the support bolts 16 are inserted are formed in the horizontal plate portions at both ends of the first frame members 31, 31, and the upper ends of the support bolts 16 are inserted into the holes. Then, the upper ends of the support bolts 16 are fixed to the first frame members 31, 31 by fastening the horizontal plate portions of the first frame members 31, 31 in a state in which they are sandwiched between the two nuts attached to the support bolts 16.

[0048] In addition, a connecting bolt 33 arranged along the Y direction is connected to the vertical plate portions of the pair of first frame members 31, 31. That is, the pair of first frame members 31, 31 are connected and fixed to each other by the connecting bolt 33, and are fixed so that their relative positions do not change even if an earthquake occurs. In addition, both ends of the connecting bolt 33 are extended from the first frame members 31, 31 to positions beyond both end faces of the air conditioner main body 130 in the front-rear direction. Then, a pressing plate 34 is attached to both ends of the connecting bolt 33. This pressing plate 34 engages with the upper parts of both end faces of the air conditioner main body 130 in the front-rear direction. Therefore, the pair of first frame members 31, 31 are positioned and fixed to the upper surface of the air conditioner main body 130, and are integrated with the air conditioner main body 130.

[0049] The second frame members 32, 32 are attached at a height position spaced a predetermined distance from the upper surface of the air conditioner 120. That is, the second frame members 32, 32 are disposed at a position slightly higher than the first frame members 31, 31. The lower end of the hanging bolt 11 provided as the hanging member 2 is connected and fixed to the horizontal plate portion of the second frame members 32, 32. For example, a hole through which the hanging bolt 11 is inserted is formed in the horizontal plate portion of the second frame members 32, 32, and the lower end of the hanging bolt 11 is inserted into the hole. The lower end of the hanging bolt 11 is fixed to the second frame members 32, 32 by clamping the horizontal plate portion of the second frame members 32, 32 with two nuts attached to the hanging bolt 11 and tightening them.

[0050] The frame body 30 also includes a holding member 35 that holds the second frame members 32, 32 at a predetermined height from the first frame members 31, 31. The holding member 35 includes a vibration-proof member 36 made of a coil spring or the like, and holds the second frame members 32, 32 via the vibration-proof member 36. The vibration-proof member 36 is a member that prevents minute vibrations generated in the air conditioner body 130 during operation of the air conditioner 120 from being transmitted to the second frame members 32, 32. The holding member 35 holds the second frame members 32, 32 via the vibration-proof member 36, so that vibrations generated during operation of the air conditioner 120 can be prevented from being transmitted to the upper floor structure via the hanging bolts 11. Furthermore, the holding member 35 is configured to be rotatable around a predetermined horizontal axis when it is temporarily fixed to the first frame members 31, 31.

[0051] 12 is an enlarged view showing the mounting state of the holding member 35. The holding member 35 includes a holding metal fitting 35a, a bolt member 35b, and a vibration-proof member 36. The holding metal fitting 35a has a first plate portion 351 and a second plate portion 352, and is a metal fitting having an L-shaped cross section in which the first plate portion 351 and the second plate portion 352 form a right angle with each other. The second plate portion 352 has a predetermined length, and the first plate portion 351 extends from one end of the second plate portion 352 in a direction perpendicular to the second plate portion 352. A hole through which the bolt member 35b is inserted is provided in the center of the first plate portion 351, and the vibration-proof member 36 is attached to the hole. In addition, a hole 353 through which the shaft portion 382 of the bolt 381 is inserted is formed in the second plate portion 352.

[0052] The vibration-proof member 36 includes an elastic body 361 formed of a coil spring or the like, a mounting portion 362 mounted in a hole in the first plate portion 351, and a support body 363 formed of a washer or the like. The mounting portion 362 mounted in the hole in the first plate portion 351 has a hole on the inside thereof through which the bolt member 35b can be inserted. The mounting portion 362 is configured to hold an upper end portion of the elastic body 361 on the lower surface side of the first plate portion 351. The upper end portion of the elastic body 361 is mounted in the mounting portion 362, and the support body 363 is mounted in a lower end portion thereof.

[0053] The bolt member 35b has a smaller diameter than the inner hole of the mounting portion 362, and its shaft is loosely inserted into the hole of the mounting portion 362 and further inserted into the inside of the elastic body 361. A nut 373 is attached to the lower end of the bolt member 35b. The nut 373 is disposed so as to be joined to the lower surface of the support body 363 in a state where it is screwed onto the bolt member 35b.

[0054] On the other hand, the first frame member 31 has the vertical plate portion 311 and the horizontal plate portion 312 which form a right angle with each other as described above. The horizontal plate portion 312 of the first frame member 31 is provided with a hole 31b for fixing the upper end portion of the support bolt 16 described above at a predetermined position near the end. Also, the vertical plate portion 311 of the first frame member 31 is provided with a mounting hole 31a for attaching the holding member 35 at a predetermined position. For example, the mounting hole 31a is formed as an elongated hole having a predetermined length in the up-down direction (Z direction) as shown in Fig. 12.

[0055] As described above, the second frame member 32 has the vertical plate portion 321 and the horizontal plate portion 322 which form a right angle with each other. A hole 32a for fixing the upper end of the bolt member 35b is provided at a predetermined position of the horizontal plate portion 322 of the second frame member 32. The horizontal plate portion 322 of the second frame member 32 also has a hole 32b for fixing the lower end of the suspension bolt 11.

[0056] The retaining member 35 is attached to the first frame member 31 by inserting a shaft portion 382 of a bolt 381 into each of the holes 353, 31a with a hole 353 provided in the second plate portion 352 aligned with a hole 31a formed in the vertical plate portion 311 of the first frame member 31 and attaching a washer 384 and a nut 383 to the tip of the shaft portion 382. The retaining member 35 is also attached to the second frame member 32 by inserting a tip of the bolt member 35b into a hole 32a formed in the horizontal plate portion 322 of the second frame member 32 with a nut 371 and a washer 372 attached to the bolt member 35b and attaching a washer 375 and a nut 374 to the tip of the bolt member 35b on the upper surface side of the horizontal plate portion 322. In other words, the bolt member 35b has a predetermined position of the shaft portion fixed to the horizontal plate portion 322 of the second frame member 32 by sandwiching the horizontal plate portion 322 of the second frame member 32 with the two nuts 371,374.

[0057] FIG. 13 is a diagram showing a state in which the holding member 35 connects the first frame member 31 and the second frame member 32 to each other. The holding member 35 is attached to the first frame member 31 with the lower end of the holding metal fitting 35a (second plate portion 352) joined to the horizontal plate portion 312 of the first frame member 31. The lower end of the bolt member 35b of the holding member 35 is held by the vibration-proof member 36, and the upper end supports the second frame member 32. The fixing position of the second frame member 32 relative to the bolt member 35b is adjustable in the axial direction of the bolt member 35b, so that the height position of the second frame member 32 relative to the first frame member 31 can be adjusted by adjusting the fixing position. In this way, the second frame member 32 is connected to the first frame member 31 via the vibration-proof member 36, so that the vibration generated during operation of the air conditioner 120 is absorbed by the vibration-proof member 36. Therefore, the vibration of the air conditioner 120 is not transmitted to the second frame member 32.

[0058] The above-described holding member 35 can rotate about the shaft 382 of the bolt 381 when the bolt 381 and the nut 383 that fix the holding metal fitting 35a to the first frame member 31 are loosened and in a provisionally fixed state, and can change the attitude of the connecting member 4 (the attitude of the second frame member 32 relative to the first frame member 31). FIGS. 14 and 15 are diagrams showing the change in attitude of the connecting member 4 when the holding member 35 is in a provisionally fixed state. The shaft 382 of the bolt 381 is inserted into the mounting hole 31a formed as an elongated hole in the vertical plate portion 311 of the first frame member 31. Therefore, when the bolt 381 and the nut 383 are in a provisionally fixed state, if the second frame member 32 is lifted in the direction of the arrow F1 (vertically upward) as shown in FIG. 14, the holding member 35 is lifted upward, and a gap D is generated between the lower end of the holding metal fitting 35a (second plate portion 352) and the horizontal plate portion 312 of the first frame member 31. This gap D allows the retaining metal fitting 35a to rotate, and the retaining member 35 can be rotated around the shaft portion 382 of the bolt 381. FIG. 15 shows a state in which the retaining member 35 is rotated. When the bolt 381 and the nut 383 are in a provisionally fastened state, the retaining member 35 changes its posture between the first state shown in FIG. 13 and the second state shown in FIG. 15 by rotating the retaining metal fitting 35a around the shaft portion 382 of the bolt 381 arranged in the horizontal direction. Note that FIG. 15 illustrates an example in which the second frame member 32 is rotated in the R direction. When the retaining member 35 is in the first state, the retaining metal fitting 35a and the bolt member 35b are arranged along the vertical direction. On the other hand, when the retaining member 35 is in the second state, the retaining metal fitting 35a is in a tilted state, and the bolt member 35b is also in a tilted state in the approximately horizontal direction. At this time, the second frame member 32 has its vertical plate portion 321 in a substantially horizontal position and its horizontal plate portion 322 in an upright position, with the tip of the horizontal plate portion 322 joined to the upper end of the vertical plate portion 311 of the first frame member 31. In other words, as the second frame member 32 changes from the first position to the second position, its position changes by approximately 90 degrees and it is supported by the first frame member 31.As the holding member 35 changes position from the first position to the second position in this manner, the hanging member 2 fixed to the second frame member 32 is folded from a vertically upward standing position to a tilted position toward the upper surface of the air conditioner 120.

[0059] Next, the support member 5 will be described. As described above, the support member 5 is a member that supports the end faces of the blow-out chamber 140 and the intake chamber 150. The support member 5 is attached to both the left and right sides of the end faces of the blow-out chamber 140 and the intake chamber 150. This support member 5 includes a support bolt 40, a support bracket 41, a bolt fixing bracket 42, and a vibration-proof member 50. The support bracket 41 includes two types of support brackets 41a and 41b that are attached to both the left and right sides of the blow-out chamber 140 and the intake chamber 150, respectively. These support brackets 41a and 41b are brackets having shapes that are left-right inverted from each other.

[0060] Fig. 16 is a diagram showing the mounting manner of the support fittings 41a and 41b. Fig. 16(a) shows the mounting manner of one of the two types of support fittings 41a and 41b, the support fitting 41a, and Fig. 16(b) shows the mounting manner of the other support fitting 41b. The support fittings 41a and 41b differ in that they have shapes that are mirror images of each other, but are otherwise common to each other.

[0061] The support fittings 41a, 41b are provided with a plate-shaped fixing portion 45 fixed to the end face of the blow-out chamber 140 or the intake chamber 150, a flat plate portion 44 connected to the upper end of the fixing portion 45 and disposed substantially horizontally, and a plate-shaped holding portion 47 connected to the left and right ends of the flat plate portion 44 and substantially parallel to the vertical plate portion 321 of the second frame member 32. The upper end of the holding portion 47 extends to a height position substantially the same as the upper end position of the second frame member 32.

[0062] The fixing portion 45 is fixed to an end surface of the blow-out chamber 140 or the intake chamber 150 by driving in a fastening member such as a screw. The flat plate portion 44 is provided with a slit 46 formed toward the holding portion 47. The slit 46 has a width allowing the support bolt 40 to be inserted therethrough. The holding portion 47 is provided with a slit 48 in the vertical direction that communicates with the slit 46 formed in the flat plate portion 44. The lower end of the holding portion 47 extends further downward than the flat plate portion 44, and this extended portion forms a restricting portion 49 that restricts the vibration-proof member 50 from sliding in the lateral direction (X direction).

[0063] The upper end of the support bolt 40 is fixed to the vertical plate portion 321 of the second frame member 32 by a bolt fixing metal fitting 42. That is, the bolt fixing metal fitting 42 has a U-shaped recess that engages with the outer circumferential surface of the support bolt 40, and the support bolt 40 is accommodated in the recess and fixed to the second frame member 32 by a bolt and a nut, thereby fixing the support bolt 40 in a state where it is sandwiched between the bolt fixing metal fitting 42 and the vertical plate portion 321 of the second frame member 32.

[0064] In addition, a truncated cone-shaped vibration-proof member 50 made of an elastic material such as rubber is attached to the lower end of the support bolt 40. The truncated cone-shaped vibration-proof member 50 has a hole in its center through which the support bolt 40 is inserted, and the lower end of the support bolt 40 is inserted into the hole. A washer and a nut 51 are attached to the tip of the support bolt 40 protruding from the lower surface of the vibration-proof member 50. By adjusting the position of the nut 51, the upper surface of the vibration-proof member 50 is joined to the lower surface of the flat plate portion 44, and the vibration-proof member 50 supports the end surface of the blow-out chamber 140 or the intake chamber 150. In this way, the support bolt 40 supports the end surface of the blow-out chamber 140 or the intake chamber 150 via the vibration-proof member 50, so that the blow-out chamber 140 or the intake chamber 150 attached to the front and rear of the air conditioner main body 130 can be held parallel to the air conditioner main body 130.

[0065] 16, even if an earthquake occurs while the support member 5 is supporting the blow-out chamber 140 or the intake chamber 150, causing the support bolt 40 to vibrate, the lateral sliding of the vibration-proof member 50 supporting the underside of the flat plate portion 44 is restricted by the restricting portion 49. Therefore, the state in which the vibration-proof member 50 supports the underside of the flat plate portion 44 is maintained in an excellent condition, and the support bolt 40 can be prevented from slipping out of the slit 48 formed in the retaining portion 47.

[0066] The support member 5 having the above configuration can change the posture of the support bolt 40 as the holding member 35 provided on the connecting member 4 changes its posture from the first state to the second state. FIG. 17 is a diagram showing the posture change of the support bolt 40. When the holding member 35 changes from the first state to the second state, the posture of the support member 5 changes from the state shown in FIG. 16 to the state shown in FIG. 17. FIG. 17(a) shows the posture change of the support bolt 40 attached to one support fitting 41a of the two types of support fittings 41a and 41b, and FIG. 17(b) shows the posture change of the support bolt 40 attached to the other support fitting 41b. For example, when changing the posture of the holding member 35 from the first state to the second state, the worker lifts up the ends of the blow-out chamber 140 and the intake chamber 150. When the ends of the blow-out chamber 140 and the intake chamber 150 are raised, the lower surface of the flat plate portion 44 is lifted from the vibration-proof member 50, and the tip (lower end) of the restricting portion 49 is higher than the upper surface of the vibration-proof member 50. Therefore, when the second frame member 32 rotates as the posture of the holding member 35 changes from the first state to the second state, the support bolt 40 is displaced from the state shown in Fig. 16(a) and (b) to the state shown in Fig. 17(a) and (b). That is, the support bolt 40 is displaced from the posture of standing vertically to the state of being tilted substantially horizontally. At this time, it is not necessary to remove the bolt fixing metal fitting 42 or the vibration-proof member 50 from the support bolt 40. Therefore, the posture of the support member 5 can be easily changed.

[0067] Therefore, in the support device 1 of this embodiment, the frame body 30 provided as the connecting member 4 is configured to be foldable so that the hanging member 2 is tilted when the holding member 35 is in a temporary fixing state with respect to the first frame member 31. By utilizing such a frame body 30 (connecting member 4), the support device 1 of this embodiment makes it possible to attach the support device 1 to the air conditioner 120 in a factory, and to fold the hanging member 2 to the upper surface side of the air conditioner 120 when transporting from the factory to the construction site. This reduces the volume of the support device 1 attached to the air conditioner 120, making it possible to load many support devices 1 onto a transport vehicle. This improves transport efficiency compared to the conventional method.

[0068] 18 is a diagram showing a state in which the brace bolts 12 arranged on the front and rear sides of the air conditioner 120 have been removed from the support device 1 assembled to the air conditioner 120. When the brace bolts 12 arranged on two parallel surfaces in this manner are not yet attached, the support device 1 can fold the hanging members 2 onto the upper surface side of the air conditioner 120 by temporarily fastening the holding members 35 to the first frame member 31.

[0069] FIG. 19 is a diagram showing a state in which one of the two hanging members 2 arranged on both the left and right sides is tilted toward the upper surface side of the air conditioner 120 and folded. FIG. 20 is a diagram showing a state in which both of the two hanging members 2 are tilted toward the upper surface side of the air conditioner 120 and folded. For example, the holding member 35 provided on the frame body 30 is temporarily fixed, and the two hanging members 2, 2 are folded one by one in order, so that the position of the support device 1 can be changed from the position shown in FIG. 18 to the position shown in FIG. 19, and further from the position shown in FIG. 19 to the position shown in FIG. 20. When the hanging member 2 of the support device 1 is folded toward the upper surface side of the air conditioner 120 as shown in FIG. 20, the volume occupied by the hanging member 2 in the support device 1 can be reduced. In other words, the volume of the state in which the support device 1 is assembled to the air conditioner 120 can be regarded as almost the same as the volume of the air conditioner 120 alone. Therefore, by folding the hanging members 2 onto the upper surface side of the air conditioner 100 as shown in Fig. 20, a larger number of air conditioners 120 with the support device 1 attached thereto can be loaded onto the bed of a transport vehicle than before. For example, the air conditioners 120 shown in Fig. 20 can be loaded vertically in multiple layers onto the bed of a transport vehicle.

[0070] As described above, the support device 1 of this embodiment includes the hanging member 2 extending vertically upward from a position near the upper surface of the air conditioner 100, the support member 3 supporting the side surface of the air conditioner 100, and the connecting member 4 connecting the lower end of the hanging member 2 and the upper end of the support member 3 to each other, as in the first embodiment. The connecting member 4 of this embodiment is configured as a frame body 30 as described above. This frame body 30 is formed by assembling the first frame member 31 and the second frame member 32 in a grid shape by the holding member 35. Then, when the holding member 35 is in a temporarily fixed state, it is possible to tilt the second frame member 32 relative to the first frame member 31. By tilting the second frame member 32, the connecting member 4 can be folded from a state in which the hanging member 2 is erected vertically upward to a tilted state.

[0071] The support device 1 having such a configuration can reduce the volume occupied by the support device 1 by folding the hanging member 2 in a tilted state while assembled to the air conditioner 120. Therefore, it is possible to suppress a decrease in transportation efficiency when the support device 1 is assembled to the air conditioner 120 in advance at a factory and transported from the factory to the construction site with the hanging member 2 folded. In other words, the air conditioner 120 to which the support device 1 is assembled can be efficiently transported from the factory to the construction site. Then, at the construction site, the hanging member 2 in a tilted state is erected in the vertical direction, the holding member 35 that has been temporarily fixed is completely fixed to the first frame member 31, and the brace bolt 12 is additionally attached to complete the support device 1. Therefore, the workload for creating the support device 1 at the construction site can be reduced more than before. Therefore, even if the number of highly skilled workers at the construction site is small, the workload is reduced, and delays in work can be prevented in advance.

[0072] Then, at the construction site, when the support device 1 assembled to the air conditioner 120 is completed, the air conditioner 120 is lifted using a lifting platform or the like, and the ceiling mounting bracket 15 attached to the upper end of the hanging member 2 is fixed to a bolt member hanging down from the underside of the upper floor structure. As a result, the air conditioner 120 is installed in a state suspended in the ceiling space. Therefore, by using the support device 1 of this embodiment, the installation work of the air conditioner 120 at the construction site is reduced, and the work can be performed efficiently.

[0073] Furthermore, the support device 1 of the present embodiment is not limited to being assembled to the air conditioner 120 at a factory, and may be assembled to the air conditioner 120 at a construction site. In this case, the air conditioner 120 is transported to the construction site separately from the support device 1, and the support device 1 is assembled at the construction site. Even when the support device 1 is transported alone from a factory to the construction site, it is possible to improve transportation efficiency by transporting the hanging members 2 in a folded state as described above.

[0074] FIG. 21 is a diagram showing the support device 1 in a state in which the hanging members 2 are folded. The support device 1 is fabricated in a factory in the state shown in FIG. 21, and is transported from the factory to a construction site. That is, the support device 1 is fabricated in a state in which the brace bolts 12 arranged on two parallel surfaces are not attached, and further, the retaining members 35 are temporarily fastened to the first frame member 31, and the hanging members 2 are folded. This makes it possible to reduce the volume occupied by the hanging members 2 in the support device 1. Then, the support device 1 in the state shown in FIG. 21 is loaded onto a transport vehicle and transported to the construction site. At this time, since the volume of the hanging members 2 is small, the transport vehicle can carry and transport a large number of support devices 1.

[0075] Then, at the construction site, the hanging member 2 in the tilted state is set up vertically, the retaining member 35 that was temporarily fastened is completely fixed to the first frame member 31, and the brace bolt 12 is additionally attached to complete the support device 1. This makes it possible to reduce the workload for creating the support device 1 at the construction site compared to the conventional method. After that, the completed support device 1 is attached to the air conditioner 120, so that the support device 1 and the air conditioner 120 become one unit. The process of setting the hanging member 2 up vertically may be performed after the support device 1 is attached to the air conditioner 120.

[0076] When the support device 1 is attached to the air conditioner 120, the air conditioner 120 is lifted using a lifting platform or the like, and the ceiling mounting bracket 15 attached to the upper end of the hanging member 2 is fixed to a bolt member hanging down from the underside of the upper floor structure. As a result, the air conditioner 120 is installed in a state where it is suspended in the ceiling space. In this way, even when the support device 1 of this embodiment is transported to the construction site separately from the air conditioner 120, it is possible to reduce the work at the construction site.

[0077] (Modification) Although the preferred embodiments of the present invention have been described above, the present invention is not limited to those described in the above embodiments. In other words, the present invention includes various modified versions of the above embodiments.

[0078] For example, in the above embodiment, the air conditioners 100 and 120 are given as an example of a ceiling-suspended object. However, the ceiling-suspended object supported by the support device 1 of the present embodiment is not limited to the air conditioners 100 and 120. In other words, the support device 1 described above is a device that can support a ceiling-suspended object having a roughly box-like shape in a state where it is suspended from the underside of the upper floor structure.

[0079] In the above embodiment, the connection parts 101, 131 for connecting bolt members are provided at the lower part of the side surface of the air conditioners 100, 120, and the support bolts 16 provided as the support members 3 support the connection parts 101, 102 provided at the lower part of the side surface of the air conditioners 100, 120. However, the position at which the connection parts 101, 131 are provided in the air conditioners 100, 120 is not necessarily limited to the lower part of the side surface. That is, in the present invention, the connection parts 101, 131 of the air conditioners 100, 120 supported by the support members 3 may be provided at any height position on the side surface of the air conditioners 100, 120. For example, the connection parts 101, 131 may be provided at a position near the upper end of the side surface of the air conditioners 100, 120. In this case, the connection parts 101, 131 may be provided on the side surface in a state of being flush with the upper surface of the air conditioners 100, 120.

[0080] In the second embodiment, the first frame member 31 and the second frame member 32 constituting the frame body 30 are held at different heights by the holding member 35. However, the first frame member 31 and the second frame member 32 are not necessarily provided at different heights. That is, the first frame member 31 and the second frame member 32 may be assembled in the same plane. For example, by connecting the ends of the second frame member 32 to both ends of the first frame member 31, a rectangular frame body can be formed in the same plane. In addition, when forming a frame body in which the first frame member 31 and the second frame member 32 are assembled in the same plane, when the second frame member 32 is temporarily fixed to the first frame member 31, the second frame member 32 is configured to be rotatable with respect to the first frame member 31, so that the hanging member 2 can be folded.

[0081] In the above embodiment, an example was described in which the hanging member 2 is folded in the left-right direction of the air conditioner 100, 120 when the brace bolts 12 arranged on the front and rear sides of the air conditioner 100, 120 are not attached. However, this is not limited to this, and the brace bolts 120 arranged in a plane parallel to both the left and right side surfaces of the air conditioner 100, 120 may be left in an unattached state, and the hanging member 2 may be folded in the front-rear direction of the air conditioner 100, 120. For example, in the case of the second embodiment, if the hole connecting the lower end of the hanging bolt 11 to the second frame member 32 is an elongated hole having a predetermined length in the front-rear direction (Y direction) of the air conditioner 120, the hanging member 2 can be folded in the front-rear direction of the air conditioner 120 by loosening the nut attached to the lower end of the hanging bolt 11. [Explanation of symbols]

[0082] 1...support device, 2...hanging member, 3...support member, 4...connecting member, 5...support member, 11...hanging bolt, 12...brace bolt, 13...brace connecting fitting, 15...ceiling mounting fitting, 16...support bolt, 17...rotating member, 30...frame body, 31...first frame member, 32...second frame member, 35...retaining member, 100, 120...air conditioner (ceiling-hanging object).

Claims

1. A support device for supporting a ceiling-suspended object in a suspended state, A hanging member extending vertically upward from a position near the upper surface of the ceiling hanging object; A support member for supporting a side surface of the ceiling hanging object; a connecting member that connects a lower end of the hanging member and an upper end of the support member to each other; Equipped with The connecting member has a fastening member, and when the fastening member is in a temporarily fixed state, it can be rotated about a horizontal axis to fold the hanging member from a state in which it is standing vertically upward to a tilted state, and when the fastening member is in a fully fastened state with the hanging member standing vertically upward, it becomes unable to rotate about the horizontal axis, and the hanging member is fixed in the state in which it is standing vertically upward.

2. The connecting member is A first frame member disposed in a first direction near an upper surface of the ceiling-suspended object; A second frame member disposed in a second direction perpendicular to the first frame member at a position adjacent to an upper surface of the ceiling suspended object; Equipped with 2. The support device according to claim 1, wherein an upper end of the support member is connected to the first frame member, and a lower end of the hanging member is connected to the second frame member.

3. The connecting member is a holding member having a lower portion connected to the first frame member and an upper portion supporting the second frame member, thereby holding the first frame member and the second frame member at different height positions; Further comprising: The support device according to claim 2, characterized in that the holding member is capable of folding the hanging member into a tilted state by rotating about a horizontal axis when the connection portion connected to the first frame member is in a temporarily fastened state.

4. The hanging member is A plurality of hanging bolts arranged at four corners of a rectangle in a plan view; A plurality of brace bolts arranged between two adjacent hanging bolts among the plurality of hanging bolts; Equipped with The support device according to any one of claims 1 to 3, characterized in that the connecting member is capable of folding the hanging member when a brace bolt among the plurality of brace bolts that is arranged parallel to the direction in which the hanging member is tilted is not attached.

5. 5. The support device according to claim 4, wherein a ceiling mounting bracket capable of being received by a bolt member hanging down from the underside of the upper floor structure is attached in advance to the upper end of the hanging bolt.

6. A method for installing a ceiling-suspended object in a suspended state on the underside of an upper floor structure using the support device according to any one of claims 1 to 5, A first step of attaching the support device to the ceiling hanging object in a factory and folding the hanging member onto the upper surface side of the ceiling hanging object; A second step of transporting the ceiling hanging object to which the support device is attached in the first step from the factory to a construction site; A third step of fixing the hanging member in a state in which the hanging member is erected vertically upward from the connecting member at the construction site and the fastening member is completely fastened to fix the hanging member in a state in which the hanging member is erected vertically upward from the connecting member; A fourth step of lifting the ceiling-suspended object with the suspension member in an upright position and attaching the suspension member to the underside of the upper floor structure; A construction method comprising the steps of:

7. A method for installing a ceiling-suspended object in a suspended state on the underside of an upper floor structure using the support device according to any one of claims 1 to 5, a first step of tilting the hanging member of the support device to a folded state in a factory; A second step of transporting the support device in which the hanging member is folded by the first step from the factory to a construction site; A third step of attaching the support device to the ceiling hanging object at the construction site, and fixing the hanging member in a state in which the hanging member is erected vertically upward from the connecting member by completely fastening the fastening members; and A fourth step of lifting the ceiling-suspended object with the suspension member in an upright position and attaching the suspension member to the underside of the upper floor structure; A construction method comprising the steps of:

Images