Ceiling hangers and ceiling structures

Abstract

To improve the durability of shock absorbing materials in floor structure.SOLUTION: A ceiling hanging tool 100 includes a frame side member 10 fixed to a beam 2, a support member 20 that supports a field frame support 3b, and a connection member 30 that connects the frame side member 10 to the support member 20. The frame side member 10 has a female threaded hole 13. The connection member 30 includes a shaft portion 31 that is screwed into the female threaded hole 13 and is displaced relative to the frame side member 10 by rotation with respect to the frame side member 10, and a pair of clamping portions 32 and 33 provided on the shaft portion 31 and rotatably clamping the support member 20 around an axis in the displacement direction of the shaft portion 31. The pair of clamping portions 32 and 33 cannot be displaced with respect to the shaft portion 31 in the displacement direction of the shaft portion 31.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a ceiling hanger and a ceiling structure. [Background technology]

[0002] Suspended ceilings are widely used as ceiling structures in buildings. To construct a suspended ceiling, first, ceiling hangers are fixed to the building frame so that they extend downward, and ceiling substrates are fixed to the ceiling hangers. Then, ceiling panels are fixed to the substrate to complete the suspended ceiling.

[0003] The building frame may be warped or twisted. In order to install ceiling panels at a desired height, it is necessary to adjust the height of the ceiling base material by changing the distance between the ceiling base material and the building frame. Patent Document 1 discloses a ceiling hanger that allows the distance between the ceiling base material and the building frame to be adjusted.

[0004] The ceiling hanger disclosed in Patent Document 1 includes a hanging hardware that can be attached to a C-frame, which is the building skeleton; a receiving hardware with a generally hook-shaped cross section that can support the siding support of the ceiling underlayment; and a connecting bolt that passes through a small hole in the hanging hardware and a small hole in the receiving hardware. The hanging hardware is connected to the connecting bolt by being sandwiched from above and below by a pair of nuts threaded onto the connecting bolt. The receiving hardware is connected to the connecting bolt by being sandwiched from above and below by another pair of nuts threaded onto the connecting bolt. By changing the position where the pair of nuts are sandwiched, the distance between the hanging hardware and the receiving hardware changes, and the height of the ceiling underlayment can be adjusted. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-102670 Summary of the Invention [Problem to be solved by the invention]

[0006] In the ceiling suspension device disclosed in Patent Document 1, adjusting the height of the ceiling substrate requires loosening one of a pair of nuts that clamp the suspension bracket or the receiving bracket, and then tightening the other nut, which is a cumbersome process. In particular, the height adjustment of the ceiling substrate is performed while the ceiling substrate is suspended from the building frame to increase accuracy, and workers often work on ladders or the like, which can be dangerous. For these reasons, there is a demand for a ceiling suspension device that allows for easy adjustment of the height of the ceiling substrate.

[0007] An object of the present invention is to provide a ceiling hanger that allows for easy adjustment of the height of a ceiling base material. [Means for solving the problem]

[0008] The present invention provides a ceiling suspension device for suspending a ceiling underlayment, the ceiling suspension device comprising: a frame-side member fixed to a building frame; a support member supporting the ceiling underlayment; and a connecting member connecting the frame-side member and the support member, wherein one of the frame-side member and the support member has an internally threaded hole, and the connecting member has a shaft portion that is threaded into the internally threaded hole and displaces relative to the one member when rotated relative to the one member, and a pair of clamping portions that are provided on the shaft portion and clamp the other of the frame-side member and the support member rotatably around an axis along the displacement direction of the shaft portion, and the pair of clamping portions cannot be displaced in the displacement direction relative to the shaft portion. At least one of the pair of clamping portions is a nut that is threadedly engaged with the shaft portion and fixed to the shaft portion so as not to be rotatable. do.

[0009] The present invention also provides a ceiling structure for a building, comprising a building skeleton, a ceiling base material provided below the building skeleton, and a ceiling suspension tool that suspends the ceiling base material, wherein the ceiling suspension tool comprises a skeleton-side member fixed to the building skeleton, a support member that supports the ceiling base material, and a connecting member that connects the skeleton-side member and the support member, wherein one of the skeleton-side member and the support member has a female threaded hole, and the connecting member has a shaft that screws into the female threaded hole and is displaced relative to the one member by rotation relative to the one member, and a pair of clamping parts that are provided on the shaft and clamp the other of the skeleton-side member and the support member so as to be rotatable around an axis that extends in a displacement direction of the shaft parts, and the pair of clamping parts cannot be displaced in the displacement direction relative to the shaft parts. At least one of the pair of clamping portions is a nut that is threadedly engaged with the shaft portion and fixed to the shaft portion so as not to be rotatable. do. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a ceiling hanger that allows for easy adjustment of the height of a ceiling base material. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a partially cross-sectional perspective view of a ceiling structure according to an embodiment of the present invention; [Figure 2] 1 is a side view of a ceiling hanger according to an embodiment of the present invention, showing a state in which a ceiling base material is hung. FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view of a portion IV shown in FIG. [Figure 5] FIG. 5 is a plan view of the elastic portion shown in FIG. [Figure 6] 4 is a cross-sectional view of a ceiling hanger according to a first modified example of the embodiment of the present invention, shown in correspondence with FIG. 3. FIG. [Figure 7] 5 is a cross-sectional view of a ceiling hanger according to a second modified example of the embodiment of the present invention, shown in correspondence with FIG. [Figure 8] 10 is a cross-sectional view of a ceiling hanger according to a third modified example of the embodiment of the present invention, shown in correspondence with FIG. 4. FIG. [Figure 9] 10 is a cross-sectional view of a ceiling hanger according to a fourth modified example of the embodiment of the present invention, shown in correspondence with FIG. 3. FIG. [Figure 10] 10 is a cross-sectional view of a ceiling hanger according to a fifth modified example of the embodiment of the present invention, shown in correspondence with FIG. 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] A ceiling hanger 100 according to an embodiment of the present invention will be described below with reference to the drawings. The ceiling hanger 100 is used in a ceiling structure 1 in a building.

[0013] Fig. 1 is a partial cross-sectional perspective view of a ceiling structure 1. As shown in Fig. 1, the ceiling structure 1 includes a plurality of beams 2 that form the building skeleton, a ceiling base material 3 provided below the beams 2, and a plurality of ceiling hangers 100 that hang the ceiling base material 3 from the beams 2. The beams 2 may be made of wood or metal.

[0014] The ceiling underlayment 3 includes multiple rafters 3a arranged at horizontal intervals and multiple rafter supports 3b that are provided across the multiple rafters 3a. The rafters 3a are fixed to the rafter supports 3b using metal fittings (not shown), and the rafters 3a are connected to each other by the rafter supports 3b. Ceiling boards 4 are fixed to the rafters 3a with nails, for example. The rafters 3a and rafter supports 3b may be made of metal or wood.

[0015] Fig. 2 is a side view of the ceiling hanger 100, showing the state in which the ceiling underlayment 3 is suspended. Fig. 3 is a cross-sectional view taken along line III-III shown in Fig. 2. In Figs. 2 and 3, the joists 3a and ceiling boards 4 are not shown.

[0016] As shown in Figures 2 and 3, the ceiling suspension device 100 comprises a body side member 10 fixed to the beam 2, a support member 20 supporting the siding support 3b, and a connecting member 30 connecting the body side member 10 and the support member 20.

[0017] The frame-side member 10 is formed with an L-shaped cross section. Specifically, the frame-side member 10 has a first plate-shaped portion 11 and a second plate-shaped portion 12 extending from the first plate-shaped portion 11 at a substantially right angle. A female screw hole 13 is formed in the second plate-shaped portion 12. The frame-side member 10 is made of, for example, metal, and is formed by bending a metal plate. The female screw hole 13 is formed, for example, by burring tapping.

[0018] If the beam 2 is made of wood, the skeleton-side member 10 is fixed using a nail inserted through a hole (not shown) formed in the first plate-shaped portion 11. If the beam 2 is made of metal, the skeleton-side member 10 is fixed so as to be hung on the beam 2.

[0019] The support member 20 has a plate-shaped portion 21 that is arranged approximately horizontally with the second plate-shaped portion 12 of the body side member 10, and a receiving portion 22 that extends from the plate-shaped portion 21. A through hole 23 is formed in the plate-shaped portion 21 of the support member 20. The receiving portion 22 is formed with an approximately U-shaped cross section, and the siding support 3b is inserted into the receiving portion 22. The receiving portion 22 is formed with a barb 24 that prevents the siding support 3b from slipping out. The support member 20 is made of, for example, metal, and is formed by bending a metal plate.

[0020] The support member 20 is not limited to a configuration in which the siding support 3b of the ceiling underlayment material 3 is inserted into the receiving portion 22. For example, the siding support 3b may be attached to the support member 20 using a fastening member (not shown). If the siding support 3b is made of wood, the siding support 3b may be attached to the support member 20 using nails. Furthermore, the siding 3a of the ceiling underlayment material 3 may be attached to the support member 20. In other words, the support member 20 only needs to be configured to be able to support the ceiling underlayment material 3.

[0021] The connecting member 30 has a shaft portion 31 that screws into the female threaded hole 13 of the body-side member 10, and a pair of clamping portions 32, 33 provided on the shaft portion 31. The shaft portion 31 is displaced relative to the body-side member 10 by rotation relative to the body-side member 10. The shaft portion 31 is a rod screw with a male thread formed on the outer periphery over its entire length.

[0022] 2 and 3, the frame-side member 10 is fixed to the beam 2 so that the female screw hole 13 extends vertically. The shaft portion 31 extends vertically and is displaced vertically by rotation relative to the frame-side member 10.

[0023] The body-side member 10 may be fixed to the beam 2 so that the female screw hole 13 extends at an angle relative to the vertical. In this case, the shaft 31 extends at an angle relative to the vertical, and is displaced in a direction at an angle relative to the vertical by rotation relative to the body-side member 10.

[0024] The shaft 31 is inserted through the through-hole 23 of the support member 20. The pair of clamping portions 32, 33 clamp the support member 20 rotatably around an axis A extending in the displacement direction of the shaft 31. This allows the shaft 31 to rotate relative to the body-side member 10 while restricting the rotation of the support member 20 relative to the body-side member 10. Therefore, with the joist support 3b suspended from the beam 2 using the ceiling hanger 100, the shaft 31 can rotate relative to the body-side member 10.

[0025] The pair of clamping portions 32, 33 preferably clamp the support member 20 with enough strength to prevent the support member 20 from rattling relative to the shaft portion 31 and to allow the support member 20 to be rotated relative to the shaft portion 31 by hand.

[0026] The pair of clamping parts 32, 33 cannot be displaced relative to the shaft part 31 in the displacement direction of the shaft part 31. Therefore, the pair of clamping parts 32, 33 are displaced together with the shaft part 31 simply by rotating the shaft part 31 relative to the main body side member 10. This makes it easy to adjust the height of the joist support 3b. This improves safety during ceiling height adjustment work.

[0027] The height of the sill support 3b may be adjusted so that it is horizontal or so that it is inclined. Also, the height of the sill support 3b may be adjusted so that the central part in the horizontal direction is convex upward or so that it is convex downward.

[0028] Fig. 4 is an enlarged cross-sectional view of part IV shown in Fig. 3. As shown in Fig. 4, the pair of clamping parts 32, 33 are nuts that are fixed to the shank 31 by crimping while being threaded onto the shank 31. Specifically, the nuts that are the pair of clamping parts 32, 33 bite into the shank 31 when struck on the outer circumferential surface, crushing the male threads of the shank 31. Therefore, the nuts that are the pair of clamping parts 32, 33 cannot rotate relative to the shank 31 and cannot be displaced relative to the shank 31.

[0029] Before being fixed to the shaft 31 by caulking, the nuts that are the pair of clamping portions 32, 33 rotate relative to the shaft 31, thereby displacing relative to the shaft 31. This makes it easy to fine-tune the positions of the pair of clamping portions 32, 33. Therefore, when assembling the ceiling hanger 100, the clamping strength of the pair of clamping portions 32, 33 on the support member 20 can be easily adjusted, making it easy to assemble the ceiling hanger 100.

[0030] The nuts that are the pair of clamping parts 32, 33 may be fixed to the shaft part 31 by, for example, an adhesive instead of by caulking, or may be fixed to the shaft part 31 by welding. In other words, it is sufficient that the nuts that are the pair of clamping parts 32, 33 are fixed to the shaft part 31 by some means so as not to rotate.

[0031] The connecting member 30 further includes an elastic portion 34 provided between the clamping portion 32 and the support member 20. The elastic portion 34 is more easily elastically deformed in the displacement direction of the shaft portion 31 than the pair of clamping portions 32, 33. Therefore, the support member 20 is pressed against the clamping portion 33 by the restoring force of the elastic portion 34 that is generated in accordance with the distance between the pair of clamping portions 32, 33. Therefore, when assembling the ceiling hanger 100, the clamping strength of the pair of clamping portions 32, 33 on the support member 20 can be more easily adjusted, making it easier to assemble the ceiling hanger 100.

[0032] The elastic portion 34 is a disc spring washer. The elastic portion 34 is made of spring steel such as high carbon steel, alloy steel, or stainless steel. The thickness of the elastic portion 34 is actually 1 / 10 or less of the thickness of the pair of clamping portions 32, 33 (the dimension in the displacement direction of the shaft portion 31), but the thickness of the elastic portion 34 is exaggerated in Figure 4.

[0033] 5 is a plan view of the elastic portion 34 shown in FIG. 4 (a view of the elastic portion 34 from the clamping portion 32 toward the clamping portion 33). As shown in FIGS. 4 and 5, the elastic portion 34 has a hole 34a through which the shaft portion 31 is inserted, and is formed so that the inner circumferential side is raised. A plurality of notches 34b are formed on the outer periphery of the elastic portion 34. The ease with which the elastic portion 34 elastically deforms, i.e., the elasticity of the elastic portion 34, can be adjusted by changing the material of the elastic portion 34 and the number and size of the notches 34b.

[0034] The elastic portion 34 is not limited to a disc spring washer, but may also be a spring washer, a wave washer, or a corrugated washer. Furthermore, the elastic portion 34 may be made of an elastomer material such as rubber. However, if the elastic portion 34 is made of an elastomer material, the restoring force of the elastic portion 34 may decrease due to deterioration over time, causing the support member 20 to rattle relative to the shaft portion 31. For these reasons, the elastic portion 34 is preferably made of metal.

[0035] Although not shown in the figures, an elastic portion equivalent to elastic portion 34 may be provided between clamping portion 33 and support member 20. Even in this case, when assembling ceiling hanger 100, the clamping strength of support member 20 by pair of clamping portions 32, 33 can be more easily adjusted, and ceiling hanger 100 can be more easily assembled.

[0036] However, if an elastic portion equivalent to the elastic portion 34 is provided between the clamping portion 33 and the support member 20, when the ceiling board 4 (see Figure 1) is fixed to the soffit 3a after adjusting the height of the soffit support 3b, the elastic portion may be deformed by the load of the ceiling board 4, and the ceiling board 4 may become lower than the desired position.

[0037] Specifically, the load acting on the support member 20 by the ceiling underlayment material 3 and the ceiling panel 4 is transmitted to the beam 2 via the clamping portion 33, the shaft portion 31, and the frame-side member 10, in that order. In other words, the clamping portion 33 is provided in the load transmission path of the ceiling underlayment material 3 and the ceiling panel 4 from the support member 20 to the frame-side member 10. If an elastic portion equivalent to the elastic portion 34 is provided between the clamping portion 33 and the support member 20, the elastic portion will also be provided in the load transmission path. Therefore, when the ceiling panel 4 is fixed to the frame 3a after adjusting the height of the joist support 3b, the elastic portion may deform under the load of the ceiling panel 4, causing the support member 20 to displace downward and the ceiling panel 4 to be lower than the desired position.

[0038] For this reason, it is preferable that no elastic portion equivalent to the elastic portion 34 is provided between the clamping portion 33 and the support member 20 .

[0039] In this embodiment, the elastic part 34 is provided between the clamping part 32, which is provided off the load transmission path, and the support member 20, and the elastic part 34 is not provided between the clamping part 33, which is provided on the load transmission path, and the support member 20. Therefore, the ceiling hanger 100 can be assembled more easily, and the ceiling panel 4 can be installed in the desired position with greater accuracy.

[0040] A member having the same or greater ease of elastic deformation in the displacement direction of the shaft portion 31 as the pair of clamping portions 32, 33 may be provided at least in one of the spaces between the clamping portion 32 and the elastic portion 34, between the elastic portion 34 and the support member 20, and between the support member 20 and the clamping portion 33.

[0041] As shown in Figure 2, the receiving portion 22 of the support member 20 is located away from the shaft portion 31 when viewing the support member 20 in the direction of displacement of the shaft portion 31. The soffit support 3b is supported by the support member 20 at a position away from the shaft portion 31 when viewing the support member 20 in the direction of displacement of the shaft portion 31. Therefore, a worker's hand or a jig for turning the shaft portion 31 can be moved from below the shaft portion 31 to the lower end of the shaft portion 31 or the clamping portion 33 without interfering with the soffit support 3b. Therefore, the height of the soffit support 3b can be adjusted from below the shaft portion 31, further improving safety during ceiling height adjustment work.

[0042] Next, a method for constructing the ceiling structure 1 will be described with reference to Figures 1 to 3. The ceiling structure 1 is constructed after a plurality of beams 2, which form the building skeleton, have been constructed.

[0043] First, the frame-side member 10 of the ceiling hanger 100 is fixed to the beam 2. Next, the shaft 31 is screwed into the female threaded hole 13 of the frame-side member 10. The frame-side member 10 may be fixed to the beam 2 with the shaft 31 removed from the female threaded hole 13.

[0044] Next, the joist support 3b of the ceiling underlayment material 3 is inserted into the receiving portion 22 of the support member 20 in the ceiling hanger 100, and the ceiling underlayment material 3 is hung from the beam 2. The joist 3a of the ceiling underlayment material 3 may be fixed to the joist support 3b before the joist support 3b is inserted into the receiving portion 22, or may be fixed to the joist support 3b after the joist support 3b is inserted into the receiving portion 22.

[0045] Next, the height of the joist support 3b is adjusted. With the ceiling hanger 100, the height of the joist support 3b can be changed simply by rotating the shaft 31 relative to the frame-side member 10, so the height of the joist support 3b can be easily adjusted. This improves safety during the ceiling height adjustment process.

[0046] Thereafter, the ceiling boards 4 are fixed to the joists 3a of the ceiling underlayment 3. This completes the construction of the ceiling structure 1.

[0047] According to the above embodiment, the following advantageous effects are achieved.

[0048] In the ceiling hanger 100 and the ceiling structure 1, the pair of clamping portions 32, 33 cannot be displaced relative to the shaft portion 31 in the displacement direction of the shaft portion 31. Therefore, the pair of clamping portions 32, 33 are displaced together with the shaft portion 31 simply by rotating the shaft portion 31 relative to the frame-side member 10. Therefore, the height of the joist support 3b can be easily adjusted, improving safety during the ceiling height adjustment work.

[0049] Furthermore, in the ceiling hanger 100, the pair of clamping portions 32, 33 are nuts that are screwed onto the shaft portion 31 and fixed to the shaft portion 31 by crimping. Therefore, before the pair of clamping portions 32, 33 are fixed to the shaft portion 31 by crimping, they rotate relative to the shaft portion 31 and are thereby displaced relative to the shaft portion 31. Therefore, when assembling the ceiling hanger 100, it is easy to fine-tune the positions of the pair of clamping portions 32, 33, and it is also easy to adjust the clamping strength of the pair of clamping portions 32, 33 on the support member 20. This makes it easy to assemble the ceiling hanger 100.

[0050] Furthermore, in the ceiling hanger 100, the connecting member 30 is provided between the clamping portion 32 and the support member 20, and further includes an elastic portion 34 that is more easily elastically deformed in the displacement direction of the shaft portion 31 than the pair of clamping portions 32, 33. Therefore, the support member 20 is pressed against the clamping portion 33 by the restoring force of the elastic portion 34 that is generated in accordance with the distance between the pair of clamping portions 32, 33. Therefore, when assembling the ceiling hanger 100, the clamping strength of the pair of clamping portions 32, 33 on the support member 20 can be more easily adjusted, making it easier to assemble the ceiling hanger 100.

[0051] Furthermore, in the ceiling hanger 100, no elastic portion equivalent to the elastic portion 34 is provided between the clamping portion 33 and the support member 20, and the support member 20 is in contact with the clamping portion 33. Therefore, when the ceiling board 4 is fixed to the joist 3a after adjusting the height of the joist support 3b, the support member 20 is prevented from being displaced downward due to the weight of the ceiling board 4. Therefore, the ceiling board 4 can be installed in the desired position with high precision.

[0052] Furthermore, in the ceiling hanger 100, the support member 20 supports the soffit support 3b at a position away from the soffit 31 when viewed in the direction of displacement of the soffit 31. Therefore, the worker's hand or a tool for turning the soffit 31 can be moved from below the soffit 31 to the lower end of the soffit 3b or the clamping portion 33 without interfering with the soffit support 3b. Therefore, the height of the soffit support 3b can be adjusted from below the soffit 31, further improving safety during the ceiling height adjustment work.

[0053] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments.

[0054] <First Modification> FIG. 6 is a cross-sectional view of a ceiling hanger 101 according to a first modified example of the embodiment of the present invention, and corresponds to FIG.

[0055] In the ceiling hanger 100 shown in Figures 2 to 4, a female threaded hole 13 is provided in the body side member 10, the shaft portion 31 is inserted through the through hole 23 of the support member 20, and the pair of clamping portions 32, 33 clamp the support member 20.

[0056] In the ceiling hanger 101 shown in Figure 6, a female threaded hole 25 is formed in the plate-shaped portion 21 of the support member 20, the shaft portion 31 is inserted through a through hole 14 formed in the second plate-shaped portion 12 of the frame-side member 10, and a pair of clamping portions 32, 33 clamp the frame-side member 10. As with the ceiling hanger 100 shown in Figures 2 to 4, the pair of clamping portions 32, 33 cannot be displaced relative to the shaft portion 31 in the displacement direction of the shaft portion 31.

[0057] In the ceiling hanger 101, when the shaft 31 is rotated relative to the support member 20, the support member 20 is displaced relative to the shaft 31. Because the pair of clamping portions 32, 33 cannot be displaced relative to the shaft 31 in the direction of displacement of the shaft 31, displacement of the support member 20 relative to the shaft 31 causes the support member 20 to be displaced relative to the main body member 10. Therefore, the height of the joist support 3b can be easily adjusted, improving safety during the ceiling height adjustment work.

[0058] In the ceiling hanger 101, the pair of clamping portions 32, 33 are nuts that are screwed onto the shaft portion 31 and fixed to the shaft portion 31 by crimping. Therefore, before the pair of clamping portions 32, 33 are fixed to the shaft portion 31 by crimping, they rotate relative to the shaft portion 31 and are thereby displaced relative to the shaft portion 31. Therefore, when assembling the ceiling hanger 101, it is easy to fine-tune the positions of the pair of clamping portions 32, 33, and it is also easy to adjust the clamping strength of the frame-side member 10 by the pair of clamping portions 32, 33. This makes it possible to assemble the ceiling hanger 101 easily.

[0059] Furthermore, in the ceiling hanger 101, the connecting member 30 is provided between the clamping portion 32 and the frame-side member 10, and further includes an elastic portion 34 that is more easily elastically deformed in the displacement direction of the shaft portion 31 than the pair of clamping portions 32, 33. Therefore, the frame-side member 10 is pressed against the clamping portion 33 by the restoring force of the elastic portion 34 that is generated according to the distance between the pair of clamping portions 32, 33. Therefore, when assembling the ceiling hanger 101, the clamping strength of the pair of clamping portions 32, 33 on the frame-side member 10 can be more easily adjusted, making it easier to assemble the ceiling hanger 101.

[0060] Also, in ceiling hanger 101, elastic part 34 is provided between clamping part 32, which is provided away from the load transmission path, and support member 20, and elastic part 34 is not provided between clamping part 33, which is provided in the load transmission path, and support member 20. Therefore, ceiling hanger 101 can be assembled more easily, and ceiling panel 4 can be installed in the desired position with greater accuracy.

[0061] Furthermore, in the ceiling hanger 101, the support member 20 supports the soffit support 3b at a position away from the shaft 31 when viewed in the direction of displacement of the shaft 31. Therefore, the worker's hand or a tool for turning the shaft 31 can be moved from below the shaft 31 to the lower end of the shaft 31 without interfering with the soffit support 3b. Therefore, the height of the soffit support 3b can be adjusted from below the shaft 31, further improving safety during the ceiling height adjustment work.

[0062] In the ceiling hanger 101 shown in Figure 6, the clamping portion 33 is located above the support member 20, making it difficult to rotate the clamping portion 33 from below the shaft portion 31. For this reason, it is preferable to form a non-circular hole or groove in the lower end of the shaft portion 31 and fit a jig into the hole or groove so that the shaft portion 31 can be rotated. Alternatively, it is preferable to make the outer periphery near the lower end of the shaft portion 31 non-circular, and fit the lower end of the shaft portion 31 into a jig so that the shaft portion 31 can be rotated.

[0063] <Second Modification> Fig. 7 is a cross-sectional view of a ceiling hanger 102 according to a second modified example of an embodiment of the present invention, and is shown corresponding to Fig. 4. In the ceiling hanger 100 shown in Figs. 2 to 4, the pair of clamping portions 32, 33 are nuts that are threadedly engaged with the shank 31 and fixed to the shank 31 by crimping. In the ceiling hanger 102 shown in Fig. 7, the clamping portion 32 is a nut that is threadedly engaged with the shank 31 and fixed to the shank 31 by crimping, and the clamping portion 33 is a head portion that is integrally provided on the shank 31 in advance. In other words, the shank 31 is the threaded portion of a headed bolt, and the clamping portion 33 is the head portion of the headed bolt.

[0064] In the ceiling hanger 102, when the shaft 31 is rotated relative to the support member 20, the support member 20 is displaced relative to the shaft 31. Because the pair of clamping portions 32, 33 cannot be displaced relative to the shaft 31 in the direction of displacement of the shaft 31, displacement of the support member 20 relative to the shaft 31 displaces the support member 20 relative to the main body member 10. Therefore, the height of the joist support 3b can be easily adjusted, improving safety during the ceiling height adjustment work.

[0065] The outer periphery of the clamping portion 33 is formed into a hexagonal shape. In other words, the shank 31 and the clamping portion 33 form a hexagonal bolt. The clamping portion 33 is not limited to a shape with an outer periphery formed into a hexagonal shape, but may also be a cross-recessed pan head with a circular outer periphery. The shape of the clamping portion 33 is not limited to the head portion of a hexagonal bolt or a cross-recessed pan head, and may be any shape that can be turned by a jig.

[0066] Although not shown, the clamping portion 33 in the ceiling hanger 101 shown in FIG. 6 may be a head portion, similar to the clamping portion 33 shown in FIG.

[0067] <Third Modification> FIG. 8 is a cross-sectional view of a ceiling hanger 103 according to a third modified example of the embodiment of the present invention, and corresponds to FIG.

[0068] 7, clamping portion 32 is threaded onto shaft portion 31 from the end of shaft portion 31 opposite clamping portion 33 (the upper end in FIG. 3), and then moved to the vicinity of clamping portion 33. Therefore, assembling ceiling hanger 102 takes time.

[0069] 8, clamping portion 32 is a head portion that is integrally provided in advance with shaft portion 31, and clamping portion 33 is a nut. Therefore, to assemble ceiling hanger 103, clamping portion 33 is simply threaded onto shaft portion 31 from the lower end thereof and moved to the vicinity of clamping portion 32.

[0070] The length from clamping portion 32 to the upper end of shaft portion 31 is preferably as long as possible so that shaft portion 31 can be displaced by rotation relative to body side member 10, whereas the length from clamping portion 32 to the lower end of shaft portion 31 is sufficient as long as it is long enough to fix clamping portion 33, and is short compared to the length from clamping portion 32 to the upper end of shaft portion 31. Therefore, the time required to move clamping portion 33 from the lower end of shaft portion 31 to the vicinity of clamping portion 32 by screwing can be made shorter compared to ceiling hanger 102 shown in FIG. 7, making it easier to assemble ceiling hanger 103.

[0071] Although not shown, the clamping portion 32 in the ceiling hanger 101 shown in FIG. 6 may be a head portion, similar to the clamping portion 32 shown in FIG.

[0072] <Fourth Modification> FIG. 9 is a cross-sectional view of a ceiling hanger 104 according to a fourth modified example of the embodiment of the present invention, and corresponds to FIG.

[0073] In the ceiling hanger 104, the shaft 31 includes a small diameter portion 31a and a large diameter portion 31b having an outer diameter larger than that of the small diameter portion 31a. The small diameter portion 31a is threaded into the female threaded hole 13 of the frame-side member 10, and the clamping portion 32 is fixed by caulking while threadedly engaged with the large diameter portion 31b. The clamping portion 33 is a head portion that is integrally formed in advance with the large diameter portion 31b of the shaft 31.

[0074] When assembling ceiling hanger 104, the nut that becomes clamping portion 32 can be attached to large diameter portion 31b without being screwed onto small diameter portion 31a. Therefore, ceiling hanger 104 can be easily assembled.

[0075] 7, clamping portion 33 of ceiling hanger 104 may have a hexagonal outer periphery or may have a cross-recessed pan head. In other words, clamping portion 33 may have any shape that allows it to be turned by a jig.

[0076] Although not shown, the shaft 31 of the ceiling hanger 101 shown in Figure 6 may be formed with a small diameter portion 31a and a large diameter portion 31b, with the small diameter portion 31a screwed into the female threaded hole 25 of the support member 20 and a nut that becomes the clamping portion 32 screwed onto the large diameter portion 31b.

[0077] <Fifth Modification> FIG. 10 is a cross-sectional view of a ceiling hanger 105 according to a fifth modified example of the embodiment of the present invention, and corresponds to FIG.

[0078] In the ceiling hanger 100 shown in Figures 2 to 4, a male thread is formed on the outer periphery of the shaft 31 over the entire length of the shaft 31. In the ceiling hanger 105 shown in Figure 10, a male thread is not formed on the outer periphery of the central part of the shaft 31. Even in this type of ceiling hanger 105, the height of the soffit support 3b can be easily adjusted within the range where the male thread is formed on the shaft 31, improving safety when adjusting the ceiling height. [Explanation of symbols]

[0079] 1. Ceiling structure 2. Beam (building frame) 3. Ceiling underlayment material 3a··Noen 3b... Noen Uke 4. Ceiling panel 10...Structure side members 13 Female thread hole 20 Support member 25 female thread hole 30 Connecting member 31 Shaft 32 · Clamping part 33...Pinching part 34 Elastic part

Claims

1. A ceiling hanger for hanging a ceiling underlayment, a frame-side member fixed to the building frame; A support member that supports the ceiling substrate; a connecting member that connects the body side member and the support member, one of the body-side member and the support member has a female threaded hole, The connecting member is a shaft portion that is threaded into the female threaded hole and displaces relative to the one member when rotated relative to the one member; a pair of clamping portions provided on the shaft portion and configured to clamp the other of the body side member and the support member rotatably around an axis along the displacement direction of the shaft portion, the pair of clamping portions cannot be displaced in the displacement direction relative to the shaft portion, At least one of the pair of clamping portions is a nut that is threadedly engaged with the shaft portion and fixed to the shaft portion so as not to be rotatable. Ceiling hanger.

2. the connecting member further includes an elastic portion that is provided between one of the pair of clamping portions and the other member and that is more easily elastically deformed in the displacement direction than the pair of clamping portions, The elastic portion is made of metal. The ceiling hanger according to claim 1.

3. The elastic portion has a hole through which the shaft portion is inserted, and is formed so that the inner circumferential side is raised, and a plurality of notches are formed on the outer periphery of the elastic portion. The ceiling suspension device according to claim 2.

4. The one clamping portion is provided away from a load transmission path of the ceiling substrate material from the support member to the skeleton side member, The other of the pair of clamping portions is provided on the load transmission path, the elastic portion is provided only between the one clamping portion and the other member among between the one clamping portion and the other member and between the other clamping portion and the other member, The ceiling suspension device according to claim 2 or 3.

5. The support member supports the ceiling underlayment material at a position away from the shaft portion when viewed in the displacement direction. The ceiling suspension device according to any one of claims 1 to 4.

6. A ceiling structure in a building, The building frame and a ceiling underlayment material provided below the building skeleton; and a ceiling hanger for hanging the ceiling base material, The ceiling suspension device is a skeleton-side member fixed to the building skeleton; A support member that supports the ceiling substrate; a connecting member that connects the body side member and the support member, one of the body-side member and the support member has a female threaded hole, The connecting member is a shaft portion that is threaded into the female threaded hole and displaces relative to the one member when rotated relative to the one member; a pair of clamping portions provided on the shaft portion and configured to clamp the other of the body side member and the support member rotatably around an axis along the displacement direction of the shaft portion, the pair of clamping portions cannot be displaced in the displacement direction relative to the shaft portion, At least one of the pair of clamping portions is a nut that is threadedly engaged with the shaft portion and fixed to the shaft portion so as not to be rotatable. Ceiling structure.

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