Ceiling substrate structure

Abstract

To provide a ceiling substrate structure that can prevent a rigid insulation material placed below beams from floating up.SOLUTION: In a ceiling substrate structure, two ceiling substrate frames 2, 2 neighboring in a direction intersecting a longitudinal direction of a girder 12 with a lower space of the girder 12 interposed between them and connected to each other by a ceiling substrate connecting member 3 arranged in the lower space. A frame portion 21 of each ceiling substrate frame 2 has a lip portion. The ceiling substrate connecting member 3 has both side end portions in which cutouts 31, 32 that engage with the lip portions of the ceiling substrate frames 2, 2, and a connecting portion 30 that connects both side end portions together. A rigid insulation material 4 is supported by a ceiling substrate plate 5 arranged below the girder 12 and is arranged in the lower space along the longitudinal direction of the girder 12. The connecting portion 30 of the ceiling substrate connecting member 3 prevents the rigid insulation material 4 from floating up.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a ceiling substructure structure in which two adjacent ceiling substructure frames, sandwiching a space below a beam in a direction intersecting the longitudinal direction of the beam, are connected to each other by a ceiling substructure connecting member. [Background technology]

[0002] Patent Document 1 discloses a ceiling substructure in which a ceiling substructure frame, to which ceiling boards are attached, is supported by support members attached to the girders. In this ceiling substructure, a first frame portion of the ceiling substructure frame, located on the girder side, has an opening on the girder side and an upper lip and a lower lip. Two adjacent ceiling substructure frames, located away from the girder in a direction intersecting the longitudinal direction of the girder, are connected by a ceiling substructure connecting member having upper notches that engage with the upper lips of the two ceiling substructure frames and lower notches that engage with the lower lips of the two ceiling substructure frames. This ceiling substructure connects the two adjacent ceiling substructure frames by the ceiling substructure connecting member having upper notches that engage with the upper lips and lower notches that engage with the lower lips. This eliminates the need for screwing for this connection, thereby reducing the work time required to fabricate the ceiling substructure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6393174 Summary of the Invention [Problem to be solved by the invention]

[0004] The beams on the top floor of a building, made of H-shaped steel beams, act as thermal bridges, allowing heat to escape more easily than in other areas. For this reason, it is possible to install insulating materials such as glass wool below the beams.

[0005] However, if the insulation is constructed so that rigid insulation made of urethane foam or other materials with excellent insulating properties is placed below the beams, the tips of the screws that fasten the ceiling board from below, which penetrate the ceiling board and protrude upward, may hit the underside of the rigid insulation, causing the rigid insulation to float and creating gaps, which may make it impossible to properly prevent thermal bridges.

[0006] In view of the above circumstances, an object of the present invention is to provide a ceiling substrate structure that can prevent rigid insulation material placed below beams from floating. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the ceiling substructure of the present invention is a ceiling substructure in which two adjacent ceiling substructure frames sandwiching a lower space of a beam in a direction intersecting the longitudinal direction of the beam are connected to each other by a ceiling substructure connecting member arranged in the lower space, The ceiling foundation connecting member has opposite end portions that engage with the two ceiling foundation frames and a connecting portion that connects the opposite end portions together, A rigid insulation material is arranged in the lower space along the longitudinal direction of the beam, and the floating of the rigid insulation material is prevented by the connecting portion of the ceiling underlayment connecting member.

[0008] With the above configuration, the rigid insulation material placed in the lower space of the beam is prevented from floating up by the connecting portion of the ceiling substructure connecting member, so even if the tip portion of the screw that fastens the ceiling board to the ceiling substructure plate from below penetrates the ceiling board and protrudes upward, it is less likely to create a gap below the rigid insulation material, and the beam can be prevented from becoming a thermal bridge.

[0009] The ceiling may be provided with a ceiling support member, a ceiling siding member, and a ceiling support member.

[0010] The frame portion of the ceiling base frame, which is located below the edge of the beam along the longitudinal direction of the beam and near the edge of the beam, has an opening on the edge side of the beam and has an upper lip portion and a lower lip portion, The ceiling substructure connecting member may have, at each of the two end portions, an upper notch portion that engages with the upper lip portion of the ceiling substructure frame, and a lower notch portion that engages with the lower lip portion of the ceiling substructure frame.

[0011] The ceiling subfloor connecting member may be inserted into the opening of the frame part in a state where it is tilted approximately 90 degrees from its original position when it connects the ceiling subfloor frame, and the upper notch may be engaged with the upper lip and the lower notch may be engaged with the lower lip by rotating the ceiling subfloor connecting member upright while inserted in the opening. In this way, the ceiling subfloor connecting member can be engaged with the ceiling subfloor frame by the simple operation of rotating the ceiling subfloor connecting member.

[0012] The connecting portion of the ceiling subfloor connecting member may have a hole into which a rod-shaped member useful for the upright rotation can be inserted. This makes it possible to easily perform the upright rotation of the ceiling subfloor connecting member by operating the rod-shaped member.

[0013] The frame portion of the ceiling base frame located below the edge of the beam along the longitudinal direction of the beam is a lip channel steel having an opening on the upper side, The ceiling underlayment connecting member may have a notch at each of the opposite end portions that engages with the horizontal lip portion of the lip channel steel of the frame portion.

[0014] In these ceiling foundation structures, the connecting portions of the ceiling foundation connecting members may be located on the upper side of the end portions on both sides, thereby allowing the use of rigid insulation material that is as thick as possible.

[0015] Alternatively, in these ceiling substructure structures, the connecting portions of the ceiling substructure connecting members may be positioned below the upper ends of the both end portions, which makes it easier to insert fire-resistant material or the like between the connecting portions and the beams.

[0016] In these ceiling substructure structures, the underside of the connecting portion of the ceiling substructure connecting member may be formed to be approximately flat. This makes it suitable for using the rigid insulation material with a flat upper end surface and as thick as possible. Furthermore, when the rigid insulation material is inserted under the connecting portion, it is possible to prevent the rigid insulation material from getting caught on the connecting portion. [Effects of the Invention]

[0017] With the present invention, even if the tip of a screw that fastens a ceiling board from below penetrates the ceiling board and protrudes upward, and hits the underside of the rigid insulation, the rigid insulation is prevented from floating, making it less likely for gaps to form below the rigid insulation, and preventing the beam from becoming a thermal bridge. [Brief explanation of the drawings]

[0018] [Figure 1] 1A and 1B are diagrams showing a ceiling substructure structure according to an embodiment of the present invention, in which FIG. 1A is a schematic plan view, FIG. 1B is a schematic cross-sectional view taken along the arrow AA, and FIG. 1C is a schematic cross-sectional view taken along the arrow BB. [Figure 2] 1(B) is a diagram of the ceiling underlayment connecting member shown in FIG. 1(B), in which FIG. 1(A) is a perspective explanatory view, FIG. 1(B) is a front view, and FIG. 1(C) is a side view. [Figure 3] 1 is an explanatory diagram showing the thermal insulation construction on the girder side in a ceiling substrate structure according to an embodiment of the present invention. FIG. [Figure 4]1 is an explanatory diagram showing the thermal insulation construction on the joist side in a ceiling substrate structure according to an embodiment of the present invention. FIG. [Figure 5] 5 is an explanatory diagram showing the installation operation of the ceiling subfloor connecting member in the ceiling subfloor structure in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in Figures 1(A) and 1(B), in this embodiment, a ceiling foundation structure 1 supports a ceiling foundation frame 2, to which a ceiling board (such as gypsum board) 11 is attached, by support members 13 attached to a girder 12 made of H-shaped steel or the like on the top floor of a building. Specifically, a clamp portion 13a of the support member 13 is fixed to a lower flange portion 12a of the girder 12. A height adjustment screw portion 13b is provided at the top of the clamp portion 13a, and a frame mounting portion 13c is provided at the bottom of this height adjustment screw portion 13b. The ceiling foundation frame 2 is mounted to this frame mounting portion 13c. Sub-beams 14 are fixed to the girder 12 in a crosswise manner.

[0020] The ceiling base frame 2 is formed in a rectangular frame shape and includes a first frame portion 21 (runner) and a second frame portion 22 (joint material). The ends of the second frame portion 22 are box-bent and caulked to the vertical plate portions of the first frame portion 21. The first frame portion 21 is fitted into the frame mounting portion 13c. The ceiling base frame 2 is formed in a rectangular shape, with the first frame portion 21 being 3640 mm long and the second frame portion 22 being 910 mm long, for example.

[0021] The first frame portion 21 is located on the side of the girder 12 along the longitudinal direction of the girder 12. The first frame portion 21 has an opening on the side of the girder 12, and has an upper lip portion and a lower lip portion.

[0022] Two adjacent ceiling base frames 2, 2, sandwiching the space below the girder 12 in a direction intersecting the longitudinal direction of the girder 12, are connected to each other by a ceiling base connecting member 3 arranged in the space below. The clearance from the core of the girder 12 to the upper and lower lip portions that form the outer ends of the first frame portions 21 of the two adjacent ceiling base frames 2 is, for example, about 83 mm, so that even if a fire-resistant coating (not shown) is applied, the ceiling base frames 2 can be installed without being affected by this.

[0023] The ceiling subfloor connecting member 3 is produced, for example, by pressing a metal plate. As shown in Figures 2(A), 2(B), and 2(C), the ceiling subfloor connecting member 3 has upper notches 31 that engage with the upper lip portion of the first frame portion 21, two at the upper side of one end 39 and two at the upper side of the other end 39, and has lower notches 32 that engage with the lower lip portion of the first frame portion 21, two at the lower side of one end 39 and two at the lower side of the other end 39. The ceiling subfloor connecting member 3 connects the two adjacent ceiling subfloor frames 2, 2 by the end portions 39, 39 on both sides where the notches 31, 32 are formed.

[0024] The ceiling subfloor connecting member 3 also has a connecting portion 30 that connects both end portions 39, 39 at their upper sides. This connecting portion 30 has an upper surface 30a and hanging pieces 30b, 30b hanging from both edges of the upper surface 30a, and has a generally U-shaped cross section. The upper surface 30a has two circular holes 30c into which a rod-shaped tool B, such as a screwdriver, can be inserted to rotate the ceiling subfloor connecting member 3. The underside of the connecting portion 30 is generally flat. The lower end of each hanging piece 30b has a horizontal surface 30d that extends outward and is generally perpendicular to the hanging direction of the hanging piece 30b.

[0025] When connecting ceiling substructure frames 2, 2 using a ceiling substructure connecting member 3, the ceiling substructure connecting member 3 is inserted into the opening of the first frame portion 21 in a state where it is tilted approximately 90 degrees relative to its original position when connecting the ceiling substructure frames 2, 2 (see Figure 1(B)), as shown in Figure 2(A), and the ceiling substructure connecting member 3 is rotated upright while inserted in the opening, so that the upper notch portion 31 engages with the upper lip portion of the first frame portion 21 and the lower notch portion 32 engages with the lower lip portion of the first frame portion 21.

[0026] As shown in FIG. 3 , after connecting the ceiling substructure frames 2, 2 using the ceiling substructure connecting member 3, a rigid insulation material 4 made of urethane foam or the like, which has excellent thermal insulation performance, and a ceiling substructure plate 5 are attached. The rigid insulation material 4 is supported by the ceiling substructure plate 5, which is disposed below the girders 12, and is disposed in the lower space along the longitudinal direction of the girders 12. In other words, the rigid insulation material 4 is sandwiched between the ceiling substructure plate 5 and the ceiling substructure connecting member 3. In this state, the connecting portion 30 of the ceiling substructure connecting member 3 prevents the rigid insulation material 4 from lifting up. In addition, the distance between the inner edges of the end portions 39, 39 on both sides of the ceiling substructure connecting member 3 is slightly larger than the width of the rigid insulation material 4, and the end portions 39, 39 on both sides prevent the rigid insulation material 4 from shifting laterally.

[0027] When installing the rigid insulation material 4, the rigid insulation material 4 is placed on the ceiling substrate plate 5, and then these are lifted up, and the ceiling substrate plate 5 can be attached to each first frame portion 21 of the ceiling substrate frames 2, 2. Alternatively, after the ceiling substrate plate 5 is attached to each first frame portion 21 of the ceiling substrate frames 2, 2, the rigid insulation material 4 can be inserted horizontally from the side between the ceiling substrate connecting member 3 and the ceiling substrate plate 5.

[0028] In this way, the connecting portion 30 of the ceiling underlayment connecting member 3 prevents the rigid insulation material 4 placed in the space below the main beam 12 from floating up, so even if the tip of the screw that fastens the ceiling board 11 to the ceiling underlayment plate 5 from below penetrates the ceiling board 11 and the ceiling underlayment plate 5 and protrudes upward, hits the underside of the rigid insulation material 4, a gap is less likely to form below the rigid insulation material 4, and the main beam 12 can be prevented from becoming a thermal bridge.

[0029] In addition, the ceiling subfloor connecting member 3 can be inserted into the opening of the first frame portion 21 in a state where it is tilted approximately 90 degrees from its original position when it is connecting the ceiling subfloor frame 2, and when the ceiling subfloor connecting member 3 is rotated upright while inserted into the opening, the upper notch portion 31 engages with the upper lip portion and the lower notch portion 32 engages with the lower lip portion, and then the ceiling subfloor connecting member 3 can be engaged with the ceiling subfloor frame 2 by the simple task of rotating the ceiling subfloor connecting member 3.

[0030] If the connecting portion 30 of the ceiling subfloor connecting member 3 has a hole portion 30c into which a rod-shaped material B useful for the above-mentioned upright rotation can be inserted, the above-mentioned upright rotation work of the ceiling subfloor connecting member 3 can be easily performed by operating the rod-shaped material B.

[0031] As shown in Figures 1(C) and 4, two adjacent ceiling subframes 2, 2, sandwiching a space below the joist 14 in a direction intersecting the longitudinal direction of the joist 14, are connected to each other by a ceiling subframe connecting member 3A arranged in the space below. The ceiling subframe 2 has a second frame section 22 positioned below the edge of the joist 14. The second frame section 22 is a lip channel steel with an opening facing upward and two horizontal lips. The clearance from the center of the joist 14 to the horizontal lips at the outer ends of the second frame sections 22 of the two adjacent ceiling subframes 2 is, for example, approximately 83 mm, allowing the ceiling subframe 2 to be installed without being affected by fire-resistant coating (not shown).

[0032] The ceiling subfloor connecting member 3A is made, for example, by pressing a metal plate. As shown in Fig. 5, the ceiling subfloor connecting member 3A has four notches 35 at one end 39 and four at the other end 39, which engage with the two horizontal lip portions of each second frame portion 22. The ceiling subfloor connecting member 3A connects the two adjacent ceiling subfloor frames 2, 2 via the end portions 39, 39 on both sides where the notches 35 are formed.

[0033] After the ceiling base frames 2, 2 are connected using the ceiling base connecting member 3A, the rigid insulation material 4 and ceiling base plate 5 are attached. The rigid insulation material 4 is supported by the ceiling base plate 5, which is placed below the minor beams 14, and is placed in the lower space along the longitudinal direction of the main beams 12. In other words, the rigid insulation material 4 is sandwiched between the ceiling base plate 5 and the ceiling base connecting member 3A from above and below. In this state, the connecting portion 30 of the ceiling base connecting member 3A prevents the rigid insulation material 4 from floating up.

[0034] In this way, the connecting portions 30 of the ceiling base connecting member 3A prevent the rigid insulation 4 arranged in the space below the joists 14 from lifting up, so even if the tips of the screws fastening the ceiling board 11 to the ceiling base plate 5 from below that penetrate the ceiling board 11 and the ceiling base plate 5 and protrude upward hit the underside of the rigid insulation 4, gaps are less likely to form below the rigid insulation 4, preventing the joists 14 from becoming a thermal bridge. In addition, the distance between the inner edges of the end portions 39, 39 on both sides of the ceiling base connecting member 3A is slightly larger than the width of the rigid insulation 4, so that the end portions 39, 39 on both sides prevent the rigid insulation 4 from shifting laterally.

[0035] Furthermore, if the connecting portions 30 of these ceiling foundation connecting members 3, 3A are positioned on the upper side of the ends on both sides of the ceiling foundation connecting members 3, 3A, the rigid heat insulating material 4 can be as thick as possible.

[0036] Furthermore, if the underside of the connecting portion 30 of the ceiling underlayment connecting member 3, 3A is formed to be approximately flat, it is preferable to use a rigid insulation material 4 that has a flat upper end surface and is as thick as possible. Furthermore, when inserting the rigid insulation material 4 below the connecting portion 30, it is possible to prevent the rigid insulation material 4 from getting caught on the connecting portion 30.

[0037] While the above-described embodiment is a semi-fireproof ceiling substructure, a fireproof ceiling substructure can also be achieved by wrapping fireproof felt, such as inorganic fiber felt, around the beams 12, 14. In this fireproof ceiling substructure, the ceiling substructure connecting members 3 have connecting portions 30 positioned below the upper ends of the ends 39, 39 on both sides of the ceiling substructure connecting members 3. This creates a relatively large gap between the upper surface of the connecting portions 30 and the underside of the girder 12, making it easy to insert the fireproof felt between the connecting portions 30 and the underside of the girder 12. Furthermore, since the ends 39, 39 on both sides of the ceiling substructure connecting members 3, 3A prevent the rigid insulation material 4 from shifting laterally, the rigid insulation material 4 can be prevented from shifting laterally when the fireproof felt is inserted between the rigid insulation material 4 and the beams 12, 14.

[0038] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0039] 1: Ceiling base structure 2: Ceiling base frame 3: Ceiling underlayment connecting member 3A: Ceiling underlayment connecting member 4: Rigid insulation 5: Ceiling base plate 11: Ceiling board 12: Large beam 13: Support member 13a: Clamp section 13b: Height adjustment screw 13c: Frame mounting part 14: beam 21: Part 1 22: Part 2 30: Department 30a: Upper face 30b: hanging piece 30c: hole 30d: horizontal face 31: Upper cut part 32: Lower cut part 35: Cut off the debt 39: end B: Rod

Claims

1. A ceiling substructure structure in which two adjacent ceiling substructure frames sandwiching a lower space of a beam in a direction intersecting the longitudinal direction of the beam are connected to each other by a ceiling substructure connecting member disposed in the lower space, The ceiling foundation connecting member has opposite end portions that engage with the two ceiling foundation frames and a connecting portion that connects the opposite end portions together, A ceiling substructure structure characterized in that rigid insulation material is arranged in the lower space along the longitudinal direction of the beam, and the lifting of the rigid insulation material is prevented by the connecting portion of the ceiling substructure connecting member.

2. 2. The ceiling substructure according to claim 1, wherein lateral displacement of the rigid insulation material is prevented by the ends on both sides of the ceiling substructure connecting member.

3. In the ceiling substructure structure according to claim 1, the frame portion of the ceiling substructure frame located below the edge of the beam along the longitudinal direction of the beam has an opening on the edge side of the beam and has an upper lip portion and a lower lip portion, A ceiling substructure structure characterized in that the ceiling substructure connecting member has, at each of the two end portions, an upper notch portion that engages with the upper lip portion of the ceiling substructure frame, and a lower notch portion that engages with the lower lip portion of the ceiling substructure frame.

4. In the ceiling substructure described in claim 3, the ceiling substructure connecting member can be inserted into the opening of the frame portion in a state where it is tilted approximately 90 degrees from its original position when connecting the ceiling substructure frame, and when the ceiling substructure connecting member is rotated upright while inserted into the opening, the upper notch engages with the upper lip portion and the lower notch engages with the lower lip portion.

5. 5. The ceiling substructure according to claim 4, wherein the connecting portion of the ceiling substructure connecting member has a hole into which a rod-shaped material useful for the upright rotation can be inserted.

6. In the ceiling substructure structure according to claim 1, the frame portion of the ceiling substructure frame located below the edge of the beam along the longitudinal direction of the beam is a lip channel steel having an opening on the upper side, A ceiling substructure structure characterized in that the ceiling substructure connecting member has a notch portion at each of the two end portions that engages with the horizontal lip portion of the lip channel steel.

7. A ceiling substructure according to any one of claims 1 to 6, characterized in that the connecting portion of the ceiling substructure connecting member is located on the upper side of the end portions on both sides.

8. A ceiling substructure according to any one of claims 1 to 6, characterized in that the connecting portion of the ceiling substructure connecting member is located lower than the upper ends of the ends on both sides.

9. A ceiling substructure according to any one of claims 1 to 6, characterized in that the lower surface of the connecting portion of the ceiling substructure connecting member is formed to be approximately flat.

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