Mounting brackets and hanging object mounting structure

Abstract

To provide a mounting bracket that facilitates arrangement of suspended objects at appropriate locations relative to ceiling materials, and a suspension structure for the suspended objects.SOLUTION: A building comprises a mounting bracket 20 for suspending a suspended object 7 from a cross member 5, which comprises: a first mounting portion 21 attached to a cross member 5 in a ceiling cavity 1A; a hanging-down portion 22 extending downward from the first mounting portion 21; a second mounting portion 23 provided at a lower end 22B of the hanging-down portion 22; and a suspended member 24 provided so as to be relatively movable with respect to the second mounting portion 23.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a mounting bracket and a mounting structure for a suspended object. [Background technology]

[0002] When placing a hanging object such as a sign near the ceiling, the hanging object is hung from a ceiling material or a horizontal member. Specifically, the hanging object is hung via a metal fitting attached to the ceiling material or horizontal member. One example of a technique for hanging an object from a horizontal member is known from Patent Document 1. One end of the support fitting in Patent Document 1 engages with a part of the horizontal member, and the other end is attached to the top surface of a wall cabinet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-194447 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a suspended object is suspended via a metal fitting attached to a ceiling material, the weight of the suspended object is applied to the ceiling material, making it difficult to improve earthquake resistance. Therefore, as with the technology described in Patent Document 1, it is conceivable to attach a metal fitting to a cross member and place the suspended object in a predetermined position below the ceiling material. However, in order to place the suspended object in a predetermined position below the ceiling material, it is time-consuming to prepare metal fittings according to the distance between the ceiling material and the cross member. This disclosure provides a mounting bracket and a mounting structure for a suspended object that makes it easy to place the suspended object in an appropriate position relative to the ceiling material. [Means for solving the problem]

[0005] (1) A mounting bracket that solves the above problem is a mounting bracket for suspending a suspended object from a cross member, and includes a first mounting part that is attached to the cross member located above the ceiling, a hanging part that extends downward from the first mounting part, a second mounting part that is provided at the lower end of the hanging part, and a hanging member that is provided so as to be movable relative to the second mounting part.

[0006] According to this configuration, the mounting bracket can position the suspended object at a predetermined position below the ceiling material by moving the hanging member relative to the second mounting portion, making it easy to position the suspended object at an appropriate position relative to the ceiling material.

[0007] (2) In the mounting fixture described above in (1), the hanging portion is provided with a reinforcing portion. With this configuration, the strength of the mounting fixture can be improved by the reinforcing portion.

[0008] (3) In the mounting bracket of (1) or (2) above, the second mounting portion has a through hole, a first nut is welded to the upper part of the through hole, the suspension member has a male thread, the male thread engages with the first nut when inserted into the through hole, a second nut attached from the lower part of the second mounting portion engages with the male thread, and the suspension member is attached to the second mounting portion by tightening the second nut. With this configuration, the first nut is welded to the second mounting portion, making it easy to attach the suspension member to the second mounting portion.

[0009] (4) The mounting bracket of any one of (1) to (3) above further includes a suspended object mounting portion that is provided on the hanging member and for mounting the suspended object. According to this configuration, the mounting bracket can suspend the suspended object from the cross member by the suspended object mounting portion.

[0010] (5) In the mounting bracket of (4) above, the hanging members include a first hanging member and a second hanging member, and the suspended object attachment part is supported by the first hanging member and the second hanging member. With this configuration, since the suspended object attachment part is supported by the first hanging member and the second hanging member, small swaying of the suspended object can be suppressed.

[0011] (6) A hanging object mounting structure that solves the above problem is a hanging object mounting structure comprising the mounting bracket of (4) or (5) above, the horizontal member, and a ceiling material, wherein the first mounting portion, the hanging portion, and the second mounting portion are disposed above the ceiling, the hanging member is disposed to pass through an insertion hole provided in the ceiling material, and the hanging object mounting portion is disposed below the ceiling material. With this configuration, the hanging object mounting structure can position the hanging object at a predetermined position below the ceiling material. Therefore, the mounting bracket makes it easy to position the hanging object in an appropriate position relative to the ceiling material.

[0012] (7) In the mounting structure for a suspended object described above in (6), the ceiling material is disposed at a distance from the hanging portion. With this configuration, the ceiling material is disposed at a distance from the hanging portion, thereby preventing the mounting bracket from coming into contact with the ceiling material.

[0013] (8) In the hanging object mounting structure of (6) or (7) above, the hanging member is configured not to come into contact with the insertion hole. With this configuration, the hanging object mounting structure is less likely to damage the ceiling material with the hanging member.

[0014] (9) In the mounting structure for a suspended object according to any one of (6) to (8) above, the diameter of the insertion hole is 30 mm or more and 40 mm or less. With this configuration, when a suspended object having a diameter of 8 mm or more and 20 mm or less is used, the mounting structure for a suspended object can ensure a clearance of the insertion hole from the suspended object.

[0015] (10) The hanging object mounting structure of any one of (6) to (9) above further includes a plate provided on the lower part of the ceiling material so as to close the insertion hole. According to this configuration, the hanging object mounting structure can prevent foreign matter from entering the insertion hole by the plate. [Effects of the Invention]

[0016] According to the mounting bracket and the mounting structure for a suspended object of the present disclosure, the mounting bracket and the mounting structure for a suspended object make it easy to position the suspended object in an appropriate position relative to the ceiling material. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of a building having a mounting bracket and a hanging object mounting structure according to an embodiment. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along line D2-D2 in FIG. [Figure 3] FIG. 3 is an enlarged cross-sectional view of the mounting bracket of FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line D4-D4 in FIG. 3. [Figure 5] FIG. 10 is a cross-sectional view of a modified example of the mounting bracket. [Figure 6] FIG. 10 is a cross-sectional view of a modified example of the mounting bracket. DETAILED DESCRIPTION OF THE INVENTION

[0018] 1 to 4, the mounting structure 10 for the mounting bracket 20 and the suspended object 7 will be described. In this embodiment, terms indicating "up," "down," "left," "right," and any other similar directions refer to those directions determined based on a front view of the suspended object 7.

[0019] 1 shows a building 1 having a mounting structure 10 for a mounting bracket 20 and a suspended object 7. Examples of the building 1 include a commercial facility, a detached house, and an apartment building. In this embodiment, the building 1 will be described as a commercial facility.

[0020] As shown in Figures 1 and 2, building 1 has a ceiling 2. Ceiling 2 is substantially horizontal to the ground. Ceiling 2 includes indoor ceilings, outdoor ceilings such as pilotis, eaves soffits at the eaves, and the underside of a veranda. Ceiling 2 has a ceiling substructure 3 and ceiling material 4 attached to ceiling substructure 3. Ceiling substructure 3 includes rafters and rafter supports. When ceiling 2 is viewed from above, the rafters intersect with the rafter supports. Ceiling material 4 includes eaves soffit material. Note that the ceiling substructure 3 is omitted from Figures 3 and 4.

[0021] The building 1 has a skeleton including cross members 5. Examples of the cross members 5 include girders and beams. In this embodiment, the cross members 5 are ceiling beams arranged near the ceiling. The cross members 5 are H-shaped steel beams. The cross members 5 have flange portions 5A and web portions 5B.

[0022] The cross member 5 is placed in the attic space 1A. The attic space 1A is the space between the ceiling material 4 and the ceiling-mounted member 1B. The attic space 1A includes the back of the eaves. The cross member 5 supports the ceiling-mounted member 1B. In this embodiment, the ceiling-mounted member 1B is a roof underlayment material.

[0023] As shown in FIG. 2, the ceiling 2 is attached to the cross member 5 by a ceiling mounting bracket 6. One end of the ceiling mounting bracket 6 is attached to a flange portion 5A of the cross member 5. The other end of the ceiling mounting bracket 6 is attached to the ceiling substrate 3. A plurality of ceiling mounting brackets 6 are arranged on the cross member 5. Each of the plurality of ceiling mounting brackets 6 is arranged on the cross member 5 at intervals in the longitudinal direction of the cross member 5.

[0024] The suspended object 7 is suspended from the cross member 5. The suspended object 7 is attached to the cross member 5 via mounting brackets 20. In one example, the suspended object 7 is attached to the cross member 5 via two mounting brackets 20. The number of mounting brackets 20 is not limited to two. The number of mounting brackets 20 can be changed depending on the size and weight of the suspended object 7. Examples of suspended objects 7 include guide signs, guiding signs, name signs, explanatory signs, and regulatory signs.

[0025] <Mounting structure> 3 and 4 show cross-sectional views of mounting structure 10 and mounting bracket 20 for suspended object 7. FIG. 3 is a cross-sectional view taken along line D3-D3 in FIG. 4. Line D3-D3 is a line passing through the central axes of mounting bolt 11 and suspended member 24. FIG. 4 is a cross-sectional view taken along line D4-D4 in FIG. 3. Line D4-D4 is a line passing through the central axes of mounting bolt 11 and suspended member 24.

[0026] The mounting structure 10 for the suspended object 7 includes a mounting bracket 20, a cross member 5, and a ceiling member 4. The mounting bracket 20 is a bracket for suspending the suspended object 7 from the cross member 5. The mounting bracket 20 is attached to the cross member 5.

[0027] Mounting bracket 20 comprises first mounting portion 21, hanging portion 22, second mounting portion 23, and hanging member 24. First mounting portion 21 is attached to cross member 5 located in attic space 1A. In this embodiment, first mounting portion 21 is attached to cross member 5. First mounting portion 21 extends along cross member 5.

[0028] A first mounting hole 21A is provided in the first mounting portion 21. A second mounting hole 5C is provided in the flange portion 5A of the cross member 5. The mounting structure 10 for the suspended object 7 further includes a mounting bolt 11 that is inserted into the first mounting hole 21A and the second mounting hole 5C, and a mounting nut 12 that engages with the mounting bolt 11. The mounting bolt 11 is inserted into the first mounting hole 21A and the second mounting hole 5C from the top of the mounting bracket 20. The head 11A of the mounting bolt 11 contacts the top of the first mounting hole 21A. The first mounting portion 21 is tightened by the mounting nut 12 from the bottom of the first mounting portion 21.

[0029] Hanging portion 22 extends downward from end 21B of first mounting portion 21. First mounting portion 21 is provided at upper end 22A of hanging portion 22. Hanging portion 22 is connected to lateral end 21B of first mounting portion 21 in front view. Second mounting portion 23 is provided at lower end 22B of hanging portion 22. Hanging portion 22 is connected to lateral end 23B of second mounting portion 23 in front view. First mounting portion 21, hanging portion 22, and second mounting portion 23 are integrally formed. First mounting portion 21, hanging portion 22, and second mounting portion 23 are arranged in the attic space 1A.

[0030] A reinforcing portion 25 is provided on the hanging portion 22. As shown in FIG. 4, the reinforcing portion 25 is provided in the center of the hanging portion 22 in a side view. An upper end 25A of the reinforcing portion 25 is connected to the first mounting portion 21. A lower end 25B of the reinforcing portion 25 is connected to the second mounting portion 23. The reinforcing portion 25 includes a stiffener. The reinforcing portion 25 may include a rib plate.

[0031] 3 and 4, ceiling material 4 is disposed with a gap between it and hanging portion 22. Ceiling material 4 is also disposed with a gap between it and second mounting portion 23. In other words, hanging portion 22 and second mounting portion 23 do not come into contact with ceiling material 4. Because hanging portion 22 and second mounting portion 23 do not come into contact with ceiling material 4, ceiling material 4 is less likely to be damaged by mounting bracket 20.

[0032] Hanging member 24 is provided so as to be movable relative to second mounting portion 23. Second mounting portion 23 is provided with through-hole 23A. Hanging member 24 has male threads 24A. Male threads 24A are provided on the outer circumferential surface of hanging member 24. Hanging member 24 is a threaded bolt. Male threads 24A are inserted into through-hole 23A.

[0033] Mounting structure 10 includes first nut 13. First nut 13 is separate from second mounting portion 23. First nut 13 is welded to the upper portion of through hole 23A. First nut 13 may be formed integrally with second mounting portion 23. Male thread 24A of hanging member 24 engages with first nut 13 when male thread 24A is inserted into through hole 23A. Upper end 24B of hanging member 24 engages with first nut 13.

[0034] The mounting structure 10 includes a second nut 14. The second nut 14 engages with the male thread 24A of the hanging member 24. The second nut 14 is attached from the bottom of the second mounting portion 23. The hanging member 24 engages with the second nut 14. The hanging member 24 is attached to the second mounting portion 23 by tightening the second nut 14. The downward projection dimension of the hanging member 24 from the ceiling material 4 can be adjusted by the position to which the second nut 14 is tightened.

[0035] The hanging member 24 is arranged to pass through an insertion hole 4A provided in the ceiling material 4. In one example, the insertion hole 4A is a perfect circle. The insertion hole 4A may be an ellipse. The diameter of the insertion hole 4A is larger than the diameter of the hanging member 24. The diameter of the insertion hole 4A is larger than the diameter of the tool used to tighten the second nut 14. The diameter of the insertion hole 4A is 30 mm or more and 40 mm or less. Preferably, the diameter of the insertion hole 4A is 35 mm.

[0036] Hanging member 24 is configured so as not to come into contact with insertion hole 4A. Insertion hole 4A has a size that prevents hanging member 24 from coming into contact with it even when hanging member 24 sways slightly due to wind, an earthquake, etc. Even when hanging member 24 sways slightly due to wind, an earthquake, etc., hanging member 24 does not come into contact with insertion hole 4A, and therefore ceiling material 4 is unlikely to be damaged by hanging member 24 coming into contact with ceiling material 4.

[0037] The mounting structure 10 for the suspended object 7 further includes a plate 15 provided on the lower part of the ceiling material 4 so as to cover the insertion hole 4A. The plate 15 is circular in a plan view. The shape of the plate 15 is not particularly limited. The plate 15 may be rectangular in a plan view.

[0038] Plate 15 includes plate hole 15A through which hanging member 24 is inserted. The diameter of plate hole 15A is smaller than that of insertion hole 4A. Mounting structure 10 for suspended object 7 further includes third nut 16 for attaching plate 15 to ceiling material 4. Third nut 16 engages with male thread 24A of hanging member 24. Plate 15 is tightened by third nut 16 from the bottom of insertion hole 4A.

[0039] Mounting bracket 20 further includes suspended object mounting portion 26. Suspended object mounting portion 26 is provided on hanging member 24. Suspended object mounting portion 26 is provided on lower end 24C of hanging member 24. Suspended object mounting portion 26 is a member for mounting suspended object 7. Suspended object mounting portion 26 is formed separately from suspended object 7, and is attached to suspended object 7 by welding. Suspended object mounting portion 26 may also be formed integrally with suspended object 7. Suspended object mounting portion 26 is positioned below ceiling material 4.

[0040] 3, suspended object attachment portion 26 has first and second portions 26A and 26B extending downward, and third portion 26C connecting first and second portions 26A and 26B. Third portion 26C is provided with hole 26D through which hanging member 24 is inserted. First portion 26A and second portion 26B may be omitted. The diameter of hole 26D is substantially the same as the diameter of plate hole 15A.

[0041] Suspended object mounting portion 26 is attached to suspended member 24 from below third nut 16. Mounting structure 10 for suspended object 7 further includes fourth nut 17 and fifth nut 18 for mounting suspended object mounting portion 26 to suspended member 24. Fourth nut 17 and fifth nut 18 engage with male thread 24A of suspended member 24. Suspended member 24 engages with fourth nut 17 and fifth nut 18. Fifth nut 18 is a locking nut. Suspended object mounting portion 26 is tightened from below by two nuts, fourth nut 17 and fifth nut 18.

[0042] As shown in FIG. 4 , mounting bracket 20 includes first hanging member 27 and second hanging member 28 as hanging member 24. Hanging object mounting portion 26 is supported by first hanging member 27 and second hanging member 28. Second mounting portion 23 is provided with two through holes 23A through which first hanging member 27 and second hanging member 28 are inserted, respectively. Ceiling material 4 is provided with two insertion holes 4A through which first hanging member 27 and second hanging member 28 are inserted, respectively. Third portion 26C of hanging object mounting portion 26 is provided with two holes 26D through which first hanging member 27 and second hanging member 28 are inserted, respectively.

[0043] <How to install a hanging item on the ceiling> An example of an installation procedure for suspending the suspended object 7 from the cross member 5 will be described. The suspended object 7 is suspended from the cross member 5 through the first to seventh steps.

[0044] In a first step, the first mounting portion 21 of the mounting bracket 20 is attached to the cross member 5 with the mounting bolt 11 and the mounting nut 12. In a second step, the ceiling material 4 is attached to the ceiling substrate 3. In a third step, an insertion hole 4A is formed in the ceiling material 4 in accordance with the position of the through hole 23A of the second mounting portion 23.

[0045] In a fourth step, male thread 24A of hanging member 24 is inserted into insertion hole 4A and through-hole 23A, and engages with first nut 13. In a fifth step, with the projection dimension of male thread 24A of hanging member 24 from the bottom of ceiling material 4 adjusted to match suspended object 7, second nut 14 is tightened, thereby attaching hanging member 24 to second mounting portion 23.

[0046] In a sixth step, hanging member 24 is inserted into plate hole 15A of plate 15, and plate 15 is attached from the bottom of ceiling material 4 with third nut 16. In a seventh step, hanging member 24 is inserted into hole 26D of suspended object attachment portion 26, and suspended object attachment portion 26 is attached from the bottom of third nut 16 with fourth nut 17 and fifth nut 18.

[0047] <Operation of the embodiment> The operation of the embodiment will be described. In this embodiment, the suspended object 7 is attached to the cross member 5 via a mounting bracket 20. The mounting bracket 20 includes a first mounting portion 21, a hanging portion 22, a second mounting portion 23, and a hanging member 24. The hanging member 24 is provided so as to be movable relative to the second mounting portion 23. This allows the suspended object 7 to be positioned at a predetermined position below the ceiling material 4.

[0048] Mounting bracket 20 is resistant to twisting and bending because it is provided with reinforcing portion 25 that intersects first mounting portion 21, hanging portion 22, and second mounting portion 23. With this structure, suspended object 7 is firmly attached to cross member 5. Therefore, mounting structure 10 for suspended object 7 has a structure that is resistant to shaking caused by earthquakes and the like.

[0049] Mounting bracket 20 has two hanging members 24. Each of the two hanging members 24 is detachable from second mounting portion 23. Therefore, the number of hanging members 24 to which suspended object 7 is attached can be selected depending on the weight of suspended object 7.

[0050] <Effects of the embodiment> The effects of the embodiment will be described. (1) The mounting bracket 20 for suspending the suspended object 7 from the cross member 5 comprises a first mounting portion 21 attached to the cross member 5 located in the ceiling space 1A, a hanging portion 22 extending downward from the first mounting portion 21, a second mounting portion 23 provided at the lower end 22B of the hanging portion 22, and a hanging member 24 provided so as to be movable relative to the second mounting portion 23.

[0051] According to this configuration, mounting bracket 20 can position suspended object 7 at a predetermined position below ceiling material 4 by moving hanging member 24 relative to second mounting portion 23. Therefore, mounting bracket 20 makes it easy to position suspended object 7 at an appropriate position relative to ceiling material 4.

[0052] (2) The hanging portion 22 is provided with a reinforcing portion 25. With this configuration, the reinforcing portion 25 can improve the strength of the mounting bracket 20.

[0053] (3) Second mounting portion 23 is provided with through hole 23A. First nut 13 is welded to the upper part of through hole 23A. Suspension member 24 has male threads 24A. Male thread 24A engages with first nut 13 when male thread 24A is inserted into through hole 23A. Second nut 14, which is attached from the lower part of second mounting portion 23, engages with male thread 24A. Suspension member 24 is attached to second mounting portion 23 by tightening second nut 14. With this configuration, first nut 13 is welded to second mounting portion 23, so that suspension member 24 can be easily attached to second mounting portion 23.

[0054] (4) Mounting bracket 20 is provided on hanging member 24 and further includes suspended object mounting portion 26 for mounting suspended object 7. According to this configuration, mounting bracket 20 can suspend suspended object 7 from cross member 5 by suspended object mounting portion 26.

[0055] (5) Hanging member 24 includes first hanging member 27 and second hanging member 28. Hanging object attachment portion 26 is supported by first hanging member 27 and second hanging member 28. According to this configuration, since hanging object attachment portion 26 is supported by first hanging member 27 and second hanging member 28, small swaying of hanging object 7 can be suppressed.

[0056] (6) Mounting structure 10 for a suspended object 7 includes mounting bracket 20, cross member 5, and ceiling material 4. First mounting portion 21, hanging portion 22, and second mounting portion 23 are disposed in attic space 1A. Hanging member 24 is disposed so as to pass through insertion hole 4A provided in ceiling material 4. Hanging object mounting portion 26 is disposed below ceiling material 4. With this configuration, mounting structure 10 for a suspended object 7 can position the suspended object 7 at a predetermined position below ceiling material 4. Therefore, mounting bracket 20 makes it easy to position the suspended object 7 in an appropriate position relative to ceiling material 4.

[0057] (7) The ceiling material 4 is disposed at a distance from the hanging portion 22. With this configuration, the ceiling material 4 is disposed at a distance from the hanging portion 22, which prevents the mounting bracket 20 from coming into contact with the ceiling material 4.

[0058] (8) Hanging member 24 is configured so as not to come into contact with insertion hole 4 A. With this configuration, hanging member 24 is less likely to damage ceiling material 4 in mounting structure 10 for suspended object 7.

[0059] (9) The diameter of insertion hole 4A is 30 mm or more and 40 mm or less. With this configuration, when using hanging member 24 with a diameter of 8 mm or more and 20 mm or less, mounting structure 10 for suspended object 7 can ensure a clearance of insertion hole 4A from hanging member 24.

[0060] (10) Mounting structure 10 for a suspended object 7 further includes plate 15 provided on the lower part of ceiling material 4 so as to close insertion hole 4A. According to this configuration, mounting structure 10 for a suspended object 7 can prevent foreign matter from entering insertion hole 4A by plate 15. Examples of foreign matter include dust, pollen, sand, insects, small animals, etc.

[0061] <Example of change> The embodiments are examples of possible forms of the mounting bracket 20 and the mounting structure 10 for the suspended object 7. The embodiments are not intended to limit the possible forms of the mounting bracket 20 and the mounting structure 10 for the suspended object 7. The mounting bracket 20 and the mounting structure 10 for the suspended object 7 may take forms different from those exemplified in the embodiments. Forms different from those exemplified in the embodiments include, for example, forms in which part of the configuration of the embodiments is replaced, modified, or omitted, or forms in which a new configuration is added to the embodiments. Modified examples of the embodiments are shown below.

[0062] As shown in FIG. 5 , mounting structure 10 for suspended object 7 may further include protective member 29 for protecting lower end 24C of suspended member 24. In this case, suspended object mounting portion 26, fourth nut 17, and fifth nut 18 are omitted. Protective member 29 is attached to suspended member 24 from below third nut 16. Protective member 29 includes, for example, a cap nut. Protective member 29 may also include a protective cap. In the case where suspended object mounting portion 26 is not attached to suspended member 24, attaching protective member 29 to lower end 24C of suspended member 24 can improve the appearance of ceiling 2 of building 1.

[0063] As shown in FIG. 6, the mounting structure 10 for a suspended object 7 may include a stringing fixture 30 for suspending the suspended object 7 that is suspended by a string. In this case, the suspended object mounting portion 26, the fourth nut 17, and the fifth nut 18 are omitted. Examples of suspended objects 7 that are suspended by a string include hammocks and curtains. The stringing fixture 30 has a female thread 30A and a stringing portion 30B. The female thread 30A of the stringing fixture 30 engages with the male thread 24A of the hanging member 24. The stringing fixture 30 is attached to the lower end 24C of the hanging member 24. The string of the suspended object 7 is attached to the stringing portion 30B.

[0064] Hanging object attachment portion 26 may be supported by only one of first hanging member 27 and second hanging member 28. In this case, a protective member 29 as shown in Fig. 5 is attached to the other of first hanging member 27 and second hanging member 28. When hanging object attachment portion 26 is supported by only one of first hanging member 27 and second hanging member 28, the other of first hanging member 27 and second hanging member 28 may be removed.

[0065] The ceiling material 4 may have a cable hole different from the insertion hole 4A. When the suspended object 7 is an electrical device, the electric cable of the suspended object 7 is inserted through the cable hole. The electric cable is connected to a power supply unit provided in the ceiling space 1A.

[0066] This specification discloses the following techniques: [Appendix 1] The mounting bracket of Appendix 1 is a mounting bracket for suspending a suspended object from a cross member, and comprises a first mounting part attached to the cross member located above the ceiling, a hanging part extending downward from the first mounting part, a second mounting part provided at the lower end of the hanging part, and a hanging member provided so as to be movable relative to the second mounting part.

[0067] [Appendix 2] In the mounting bracket described in Appendix 1, the hanging portion is provided with a reinforcing portion.

[0068] [Appendix 3] In the mounting bracket described in Appendix 1, a through hole is provided in the second mounting portion. A first nut is welded to the upper part of the through hole. The suspension member has a male thread. The male thread engages with the first nut when the male thread is inserted into the through hole. A second nut attached from the lower part of the second mounting portion engages with the male thread. The suspension member is attached to the second mounting portion by tightening the second nut.

[0069] [Appendix 4] The mounting bracket described in Supplementary Note 1 further comprises a suspended object mounting portion that is provided on the hanging member and that is used to mount the suspended object.

[0070] [Appendix 5] In the mounting bracket described in Supplementary Note 4, the hanging members include a first hanging member and a second hanging member. The suspended object mounting portion is supported by the first hanging member and the second hanging member.

[0071] [Appendix 6] The hanging object mounting structure of Supplementary Note 6 comprises the mounting bracket of Supplementary Note 4 or 5, the horizontal member, and a ceiling material. The first mounting portion, the hanging portion, and the second mounting portion are arranged above the ceiling. The hanging member is arranged to pass through an insertion hole provided in the ceiling material. The hanging object mounting portion is arranged below the ceiling material.

[0072] [Appendix 7] In the hanging object mounting structure described in Supplementary Note 6, the ceiling material is disposed at a distance from the hanging portion.

[0073] [Appendix 8] In the hanging object mounting structure described in Supplementary Note 6, the hanging member is configured not to come into contact with the insertion hole.

[0074] [Appendix 9] In the hanging object mounting structure described in Supplementary Note 6, the diameter of the insertion hole is 30 mm or more and 40 mm or less.

[0075] [Appendix 10] The hanging object mounting structure described in Supplementary Note 6 further includes a plate provided on a lower part of the ceiling material so as to close the insertion hole. [Explanation of symbols]

[0076] 1A...attic, 4...ceiling material, 4A...insertion hole, 5...cross member, 7...suspended object, 10...mounting structure, 13...first nut, 14...second nut, 15...plate, 20...mounting bracket, 21...first mounting portion, 22...hanging portion, 22B...lower end, 23...second mounting portion, 23A...through hole, 24...suspending member, 24A...male screw, 25...reinforcement portion, 26...suspended object mounting portion, 27...first hanging member, 28...second hanging member.

Claims

1. A mounting bracket for suspending a suspended object from a cross member, a first mounting portion attached to the cross member located above the ceiling; a hanging portion extending downward from the first mounting portion; a second attachment portion provided at a lower end of the hanging portion; a first suspension member as a suspension member provided so as to be movable relative to the second attachment portion; a second suspension member as the suspension member; a hanging object attachment portion that is provided on the hanging member and that attaches the hanging object, the suspended object attachment portion is supported by the first suspension member and the second suspension member, The hanging portion is provided with a reinforcing portion, the reinforcing portion is provided between the first suspension member and the second suspension member in a plan view. Mounting brackets.

2. The second mounting portion is provided with a through hole, a first nut is welded to an upper portion of the through hole; The suspension member has a male thread, the male screw engages with the first nut in a state in which the male screw is inserted into the through hole, a second nut attached to the lower part of the second attachment portion engages with the male thread; The suspension member is attached to the second attachment portion by tightening the second nut. The mounting bracket according to claim 1 .

3. A mounting structure for a suspended object, The mounting bracket according to claim 1 or 2; The cross member; a ceiling material; the first mounting portion, the hanging portion, and the second mounting portion are disposed in the ceiling space; The hanging member is arranged to pass through an insertion hole provided in the ceiling material, The hanging object attachment portion is disposed below the ceiling material. Mounting structure for hanging objects.

4. The ceiling material is disposed at a distance from the hanging portion. The hanging object mounting structure according to claim 3.

5. The suspension member is configured not to come into contact with the insertion hole. The hanging object mounting structure according to claim 3.

6. The diameter of the insertion hole is 30 mm or more and 40 mm or less. The hanging object mounting structure according to claim 3.

7. Further, a plate is provided on the lower part of the ceiling material so as to close the insertion hole. The hanging object mounting structure according to claim 3.

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