Ceiling receiving metal fitting, fitting structure of ceiling material used with said ceiling receiving metal fitting, and ceiling and exterior structure

Abstract

To provide a ceiling receiving metal fitting, a fitting structure of ceiling material using the ceiling receiving metal fitting, and a ceiling / exterior structure, which can be mounted from above onto a shaped steel (beam, roof purlin) or the like used as a roof frame without welding, and on which various ceiling materials can be mounted on its upper surface.SOLUTION: A ceiling receiving metal fitting 1 comprises: a pair of left and right inside fittings 2, 2 that are mounted to a shaped steel H having an upper flange h1 whose both side ends h1a extend outward, the pair of inside fittings 2, 2 being arranged so as to sandwich the side ends h1a of the shaped steel H from above and below; an outside fitting 3 arranged so as to cover the inside fittings 2, 2; and fastening members 4 assembled so as to penetrate both fittings 2 and 3 in a state where the outside fitting 3 is arranged to cover the inside fittings 2, 2. The outside fitting 3 is integrally mounted on the upper flange h1 of the shaped steel H and enables mounting of a ceiling material 5.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ceiling bracket that can be attached from above to structural steel (beams, roof purlins) used as the framework of a roof without welding, and to which various ceiling materials can be attached on its upper surface, as well as to a ceiling material mounting structure using the ceiling bracket, and to a ceiling / exterior structure. [Background technology]

[0002] Many types of steel-framed architectural structures are known, including those in which multiple roof purlins made of C-shaped steel are fixed parallel to the eaves and ridge direction on top of H-shaped steel beams arranged at an angle, and roof underlayment material is laid and attached on top of these roof purlins.

[0003] The present applicant also proposed a wall structure for a building shown in Patent Document 1 as a structure that provides thermal insulation to the roof surface of a building and enhances the design of the underside of the attic (ceiling surface). However, the wall structure described in Patent Document 1 is constructed by erecting wall materials such as ceiling materials on structural steel (structural materials) to construct the wall surface, and therefore is a configuration that is adopted before the roof is constructed.

[0004] On the other hand, Patent Documents 2 and 3 describe a structure (method) for constructing a wall surface such as a ceiling, in which ceiling materials are arranged on a skeleton of H-shaped steel or C-shaped steel via support materials or the like. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4764375 [Patent Document 2] Japanese Patent Application Publication No. 5-255994 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-224417 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned cited documents 1 to 3, the steel members that make up the framework of the building are often spaced at irregular intervals due to construction errors, etc., which makes it difficult to stably support the ceiling materials, etc., and there is a risk of them falling off. To prevent such falling off, it is necessary to prepare ceiling materials, etc. that match the intervals each time, which is time-consuming.

[0007] Therefore, the present invention aims to provide a ceiling bracket that can be attached from above to structural steel (roof purlins) used as the framework of a roof without welding, and that can also be used to attach various ceiling materials to its upper surface, as well as a ceiling material mounting structure and ceiling / exterior structure that use this ceiling bracket. [Means for solving the problem]

[0008] The present invention has been proposed in view of the above, and relates to a ceiling bracket that is attached to a structural steel having an upper flange whose both ends extend outward, and that comprises a pair of left and right inner brackets arranged to sandwich both ends of the upper flange of the structural steel from above and below, an outer bracket arranged to cover the inner brackets, and a fastener that is assembled so as to pass through both brackets with the outer brackets arranged to cover the inner brackets, and the outer brackets are attached integrally to the upper flange of the structural steel, and a ceiling material can be attached to the ceiling bracket. The "fastener" refers to a mounting bolt that is disposed so as to pass through the inner metal fitting and the outer metal fitting, and a nut that is disposed on the upper surface of the outer metal fitting.

[0009] The present invention also proposes a ceiling support bracket characterized in that, in the ceiling support bracket, the outer bracket is attached so as to extend from the upper flange of the structural steel, and the ceiling material is erected on this extended portion.

[0010] The present invention also proposes an installation structure for a ceiling material using the above-mentioned ceiling support fittings, characterized in that the ceiling material has an installation receiving portion at one side end of the panel portion that can fit onto the support piece, and an installation overlap portion at the other side end that can fit onto the installation receiving portion, and the installation receiving portion and the installation overlap portion of the ceiling material are fitted onto the support pieces of each of the ceiling support fittings attached to the structural steel at a predetermined interval.

[0011] Furthermore, the present invention also proposes a ceiling / exterior structure that is an exterior structure using the above-mentioned ceiling support bracket, characterized in that the ceiling material is attached to each of the ceiling support brackets fixed to the structural steel at a predetermined interval, and the exterior structure is attached to support members fixed to the structural steel at a predetermined interval. [Effects of the Invention]

[0012] The ceiling bracket of the present invention can be attached from above to the structural steel (beams, roof purlins) used as the framework of the roof without welding, and various ceiling materials can be attached to its upper surface. Therefore, there is no need for the effort or strength to bring various welding tools to the roof side, and there is no need for large facilities to assemble scaffolding or the like inside the room to perform construction from below, making the construction itself easy to carry out.

[0013] Furthermore, when the outer metal fittings are attached so as to extend from the upper flange of the structural steel and a ceiling material is erected on this extending portion, a gapless ceiling structure can be constructed by alternately using a type of ceiling material that has an attachment receiving portion at one side end of the face plate that can fit into the extending portion and an attachment overlapping portion at the other side end that can fit into the attachment receiving portion, or by alternately using ceiling material A that has attachment receiving portions at both ends of the face plate and ceiling material B that has attachment overlapping portions at both ends of the face plate.

[0014] Furthermore, the mounting structure (ceiling structure) of the ceiling material of the present invention is such that the ceiling material has an attachment receiving portion at one side end of the panel portion that can fit into the extended portion, and an attachment overlap portion at the other side end that can fit into the attachment receiving portion, and the attachment receiving portion and the attachment overlap portion of the ceiling material are fitted into the receiving pieces of each of the ceiling receiving fittings attached to the structural steel at a predetermined interval, so that a ceiling structure can be constructed without gaps using a single type of ceiling material.

[0015] Furthermore, in the ceiling and exterior structure of the present invention, the ceiling material is attached to each of the ceiling support brackets fixed at a predetermined interval to the structural steel, and the exterior structure is attached to support members fixed at a predetermined interval to the structural steel, so that the exterior structure is formed above the structural steel and the ceiling structure is formed below the structural steel. [Brief explanation of the drawings]

[0016] [Figure 1] (a) An oblique view showing the state in which the ceiling support bracket of Example 1 of the present invention is attached to a structural steel, (b) a front view of the structural steel, (c) an oblique view showing the state in which a ceiling material is attached to the right-hand extension of the ceiling support bracket attached to the structural steel, (d) a plan view and front view of the inner bracket used, and (e) an oblique view showing the state in which a ceiling material is attached to the right-hand extension of the ceiling support bracket attached to the structural steel and a ceiling material is attached to the left-hand extension. [Figure 2] (a) A front view showing the state in which the ceiling support bracket of Example 1 of the present invention is attached to structural steel, (b) A side view showing the attached state of the inner and outer brackets in that state, (c) A plan view of the outer bracket used, (d) A front view thereof, (e) A side view thereof, (f) A front view of the fastener used, (g) A side view of the inner bracket used, (h) A plan view thereof, (i) A front view thereof, (j) A front view showing the state in which the ceiling support bracket of Example 2 is attached to structural steel, (k) A side view showing the attached state of the inner and outer brackets in that state. [Figure 3](a) An exploded oblique view of a ceiling support bracket according to a first embodiment of the present invention, (b) an oblique view of the assembly thereof, (c) an oblique view showing the state in which the ceiling support bracket is attached to a structural steel, (d) an oblique view showing the attached state, (e) an oblique view showing an example of a ceiling material, (f) an oblique view showing the state in which a ceiling material is attached to the left extension portion between adjacent ceiling support brackets attached to a structural steel, (g) an oblique view showing the state in which a ceiling material is attached to the right extension portion of a ceiling support bracket attached to a structural steel, and (h) an oblique view showing the state in which a ceiling material is attached to the left and right extension portions between adjacent ceiling support brackets attached to a structural steel. [Figure 4] 1A is a front view showing an example of a ceiling / exterior structure in which the ceiling receiving fixture of Example 1 is used, and FIG. 1B is a side cross-sectional view in the flow direction thereof. [Figure 5] (a) A front view showing a ceiling / exterior structure formed without gaps using the ceiling support of Example 1, (b) a side cross-sectional view thereof, (c) a front view showing a ceiling / exterior structure formed without gaps without using an extension decorative material, and (d) a side cross-sectional view thereof. [Figure 6] (a) A front view showing the state in which the outer fittings are about to be installed on the structural steel, as part of the procedure for constructing a ceiling structure using the extension decorative material; (b) A side cross-sectional view thereof; (c) A front view showing the state in which the ceiling material is about to be installed on both ends of the outer fittings attached to the structural steel; (d) A side cross-sectional view thereof; (e) A front view showing the procedure for installing the extension decorative material on the installed ceiling material; (f) A side cross-sectional view thereof. [Figure 7] (a) A front view showing the procedure for installing insulation on the installed extension decorative material, (b) a side cross-sectional view thereof, (c) a front view showing the insulation installed without any gaps, and (d) a side cross-sectional view thereof. DETAILED DESCRIPTION OF THE INVENTION

[0017] The ceiling support bracket of the present invention is attached to a structural steel having upper flanges whose both ends extend outward, and comprises a pair of left and right inner brackets arranged to sandwich both ends of the upper flange of the structural steel from above and below, an outer bracket arranged to cover the inner brackets, and a fastener assembled to pass through both brackets with the outer brackets arranged to cover the inner brackets, and is characterized in that the outer brackets are attached integrally onto the upper flange of the structural steel, allowing ceiling material to be attached.

[0018] This ceiling support bracket is a component attached to a structural steel beam with upper flanges extending outward on both sides, and consists of the inner bracket, the outer bracket, and the fastener.The inner bracket, the outer bracket, and the fastener will be described below. The structural steel to which this ceiling bracket is attached has upper flanges extending outward on both side ends, and may be an H-shaped steel as in the illustrated embodiment described later, or a T-shaped steel.

[0019] The inner metal fitting used in this ceiling support metal fitting is a pair of left and right members arranged to sandwich both side edges of the upper flange of the structural steel from above and below, as described above. The left and right members are arranged to sandwich the left and right side edges of the structural steel from above and below, with the lower piece located at the bottom in the sandwiched state running along the back surface of the upper flange, and the upper piece located at the top in the sandwiched state being arranged above the upper flange. As in the illustrated embodiment described below, this inner fitting is a piece-shaped member in a horizontal U-shape with an open side, which is attached to the upper flange of the structural steel from the side by fitting it, with its lower piece positioned along the back surface of the upper flange and its upper piece positioned above the upper flange. In this state, the upper piece simply needs to have an upward-facing bolt, i.e., a mounting bolt that forms the fastener, erected thereon.

[0020] The outer fitting used in this ceiling support fitting is a component arranged to cover the inner fitting as described above, and since the inner fitting is attached to both side ends of the upper flange as described above, this outer fitting has a length that at least exceeds the upper flange (this length is called the extension portion). As in the illustrated example described below, this outer metal fitting is made of an inverted U-shaped material that is open at the bottom and consists of a top surface and side surfaces (front and rear surfaces), so it can be easily attached to the inner metal fitting from above and is arranged so that the lower ends of the side surfaces (front and rear surfaces) abut (set against) the surface of the upper flange. The top surface is also provided with holes through which fasteners (mounting bolts) pass.

[0021] The fastener used in this ceiling bracket consists of a mounting bolt (= an upward bolt with the head at the bottom and the threaded portion extending upward) that is arranged to pass through the inner and outer brackets of the above-mentioned configuration, and a nut that is arranged on the upper surface of the outer bracket. This fastener may be in a form (first form) in which the mounting bolt (upward bolt) is integrated in an upright position into the upper piece of the inner fitting in advance, or in a form (second form) in which the mounting bolt (upward bolt) is attached from the back surface side of the upper piece of the inner fitting after the inner fitting and outer fitting have been assembled.

[0022] In the first aspect, the mounting bolt (upward bolt) is fixed in an upright position in advance to the upper piece of the inner fitting by means of bonding, welding, or the like, and the mounting bolt is inserted into a hole provided in the upper surface portion of the outer fitting, and then a nut is tightened from the upper surface portion of the outer fitting to form a single unit. Even if the mounting bolt is fixed to the inner fitting by welding, this is done in a factory or the like, and does not contradict the premise of weldless construction, which does not require on-site welding. Therefore, in this first aspect, the operation of fitting the outer metal fitting to the inner metal fitting with the mounting bolts already integrated thereto can be easily accomplished.

[0023] In the second aspect, the inner fitting and the outer fitting are assembled so that the hole provided in the upper piece of the inner fitting and the hole provided in the top surface portion of the outer fitting are connected, and a mounting bolt (upward bolt) is attached from the back surface side of the upper piece of the inner fitting, and a nut is tightened onto the mounting bolt that protrudes from the hole provided in the top surface portion of the outer fitting to form a single unit. Therefore, in this second embodiment, two steps are required: the step of connecting the holes provided in both fittings, and the step of inserting the mounting bolt from below into this connecting hole.

[0024] Regardless of these modes, the fastener (nut) is tightened onto the threaded portion of the mounting bolt in a state in which the outer metal fitting is assembled to the inner metal fitting as described above. This fastener (nut) is threaded onto the mounting bolt and tightened from above, thereby pressing the outer metal fitting downward (upper flange) and pulling the inner metal fitting upward. Therefore, the lower end of the side portion of the outer fitting is pressed against the surface of the upper flange, and the lower piece of the inner fitting is pressed against the back surface of the upper flange, so that the ceiling support fitting can be attached integrally to the upper flange.

[0025] As mentioned above, the outer metal fitting has a length (extending portion) that exceeds the upper flange, and therefore consists of a portion (covering portion) that covers the upper surface of the upper flange in a cladding manner and a portion (extending portion) that extends from the side end of the outer metal fitting. Since this extension portion extends outward from the side end of the structural steel, various ceiling materials can be attached, and it is desirable that the ceiling material be installed on the extension portions of adjacent ceiling support brackets.

[0026] The ceiling material to be installed preferably has a face plate portion that forms the ceiling surface, with one side end of this face plate portion having an attachment receiving portion that can fit into the extension portion, and the other side end having an attachment overlap portion that can fit into the attachment receiving portion. It is also possible to alternately use ceiling material A, which has attachment receiving portions on both sides of the face plate portion, and ceiling material B, which has attachment overlap portions on both sides of the face plate portion, but this requires preparing two types of ceiling material A and B, and it is also time-consuming to manage them so as not to get them mixed up.

[0027] This panel portion has dimensions that correspond to the spacing between adjacent ceiling support brackets, and may be flat or a perforated plate (punched) as in the illustrated example described below, and a board-shaped or irregularly shaped insulating material may be placed on the upper surface thereof. The mounting receiving portion and the mounting overlap portion formed on the side edge of the face plate portion preferably have side portions that rise upward as in the illustrated embodiment described later. In this case, a heat insulating material or the like can be fitted between the left and right side portions. Furthermore, although the attachment receiving portion is shaped in a generally inverted J-shape in the illustrated embodiment described below, since it is an extended portion of the outer fitting which is an inverted U-shaped member that opens downward, there are no particular limitations on the shape as long as it can be fitted from above into the inverted U-shape that opens downward. The same is true for the attachment overlap portion that can be fitted thereto; the attachment receiving portion is formed larger than the extended portion of the outer fitting, and the attachment overlap portion is formed even larger.

[0028] The ceiling support bracket of the present invention, consisting of these inner and outer brackets and fasteners, can be attached from above to structural steel (beams, roof purlins) used as the roof framework without welding, and various ceiling materials can be attached to its extended parts.

[0029] The mounting structure (ceiling structure) of the ceiling material using the ceiling support fittings is formed by fitting the mounting receiving portion and the mounting portion of the ceiling material into the extended portion of each ceiling support fitting, so that the ceiling material can be arranged without any gaps.

[0030] Furthermore, the ceiling and exterior structure using the ceiling support brackets is characterized in that the ceiling material is attached in an erected state using the ceiling support brackets fixed to the structural steel at predetermined intervals, and the exterior structure is attached to support members fixed to the structural steel at predetermined intervals, so that the ceiling structure using the ceiling support brackets is arranged below the structural steel (inside the room) and the exterior structure is attached above the structural steel. Therefore, both the ceiling structure and the exterior structure can be easily constructed from above the structural steel.

[0031] It should be noted that the exterior structure formed above the structural steel is not particularly limited in terms of the configuration of its support members, exterior materials, etc., as long as it can be constructed from above the structural steel. In the illustrated embodiment described below, a structure in which a mounting bracket is fixed to the structural steel in the same way as the ceiling bracket, so that a tight frame is firmly fixed in an upright position, and a bracket capable of holding exterior materials and cap materials is fixed to the upper end of the frame, is desirable because it can be easily constructed from above the structural steel in the same way as the ceiling structure, but is not limited to this. [Example]

[0032] The ceiling support bracket 1 of the first embodiment of the present invention is attached to a structural steel H having an upper flange h1 with both side ends h1a, h1a extending outward as shown in Figure 1(b), and comprises a pair of left and right inner brackets 2, 2 arranged so as to sandwich both side ends h1a, h1a of the upper flange h1 of the structural steel H from above and below as shown in Figures 1(a) and 2(a), an outer bracket 3 arranged so as to cover the inner brackets 2, 2, and a fastener 4 (mounting bolt 41, nut 42) assembled so as to pass through both brackets 2, 3 with the outer bracket 3 arranged so as to cover the inner brackets 2, 2.

[0033] The structural steel H is an H-beam (H-shaped steel) having an upper flange h1 with both side ends h1a, h1a extending outward as shown in FIG. 1(b), with reference numeral h2 representing the web and reference numeral h3 representing the lower flange.

[0034] As shown in FIG. 1(d), the inner fitting 2 is a pair of horizontally U-shaped piece materials consisting of an upper piece 21, a middle piece 22, and a lower piece 23. When the inner fitting 2 is arranged so as to sandwich both side ends h1a, h1a of the upper flange h1 of the structural steel H from above and below (sandwiched state) as shown in FIGS. 1(a), (c) and 2(g) to (i), the lower lower piece 23 is positioned along the back surface of the upper flange h1, and the upper piece 21, which is positioned above the upper flange h1 in the sandwiched state, is arranged above the upper flange h1.

[0035] As shown in Figure 1(a) and Figures 2(c) to (e), the outer fitting 3 is an inverted U-shaped molded material that is open at the bottom and consists of an upper surface portion 31 and side surfaces 32 (front surface portion and rear surface portion), and is arranged to cover the inner fittings 2, 2. As described above, the inner fittings 2, 2 are attached to both side ends h1a, h1a of the upper flange h1, so the outer fitting 3 has extending portions 33, 33 whose length exceeds the upper flange h1. The outer metal fitting 3 can be easily attached to the inner metal fittings 2, 2 from above, and is disposed so that the lower end of the side surface portion 32 abuts (is in a mounted state) against the surface of the upper flange h1. The upper surface portion 31 is also provided with a hole through which the mounting bolt 41 of the fastener 4 passes.

[0036] As shown in Figures 1(a), (b) and 2(f), the fastener 4 comprises a mounting bolt (upward bolt) 41 arranged to pass through the inner fitting 2 and the outer fitting 3, and a nut 42 arranged on the upper surface 31 of the outer fitting 3. This fastener 4 may be of a first type in which the mounting bolt 31 is integrated in an upright state into the upper piece 21 of the inner fitting 2 in advance (i.e. before installation), or of a second type in which the mounting bolt 41 is attached from the back surface side of the upper piece 21 of the inner fitting 2 with the inner fitting 2 and the outer fitting 3 assembled.

[0037] Regardless of the two aspects described above, when the nut 42 is tightened onto the mounting bolt 42 with the inner fitting 2 and the outer fitting 3 assembled, the inner fitting 2 is pulled upward and the outer fitting 3 is pressed downward. Therefore, the lower end of the side surface portion 32 of the outer metal fitting 3 acts on the front surface of the upper flange h1, and the lower piece 23 of the inner metal fitting 2 acts on the back surface of the upper flange h1 in a crimping manner, allowing them to be attached integrally.

[0038] Furthermore, the outer metal fitting 3 has extending portions 33 whose length exceeds the upper flange h1, so that a ceiling material 5 can be attached to each extending portion 33 as shown in FIG. 1(e). Reference numeral 5D in the figure denotes a heat insulating material with a rectangular cross section that is placed on the face plate portion 51 of the ceiling material 5, and is made of a porous material and has sound absorbing properties. The ceiling material 5 has upright side portions 52, 52 formed on both ends of a substantially flat panel portion 51, and an outward-facing horizontal piece-like mounting receiving portion 53 and a mounting overlap portion 54 formed on the upper end of each side portion 52. Therefore, the heat insulating material 5D arranged on the face plate portion 51 of the ceiling material 5 is sandwiched between the side surface portions 52, 52 of the ceiling material 5, and is therefore stably installed.

[0039] In this way, the ceiling bracket 1 of Example 1 can be attached from above to the shaped steel H used as the framework of the roof without welding, and the ceiling material 5 and heat insulating material 5D can be easily attached to its upper surface. Therefore, there is no need for the effort or strength to carry various welding tools to the roof side, and there is no need for huge equipment to assemble scaffolding or the like inside the room to perform construction from below, making the construction itself easy to carry out.

[0040] Furthermore, the outer metal fitting 3 in this Example 1 is attached so as to extend from the upper flange h1 of the structural steel H, and the ceiling material 5 is erected on the extending portions 33, 33, and the ceiling material 5 and the insulating material 5D can be attached onto the face plate portion 51 of the ceiling material 5, so that a ceiling structure without gaps can be constructed.

[0041] Fig. 3 shows an example of a construction of a mounting structure (ceiling structure) for a ceiling material 5 using the ceiling bracket 1 of Example 1 shown in Figs. 3(a) and (b). The ceiling material 5 and heat insulating material 5D shown in Fig. 3(e) are the same as those used in Fig. 1(e) above. Therefore, strictly speaking, the construction example of a mounting structure (ceiling structure) for a ceiling material 5 using the ceiling bracket 1 is shown in Figs. 3(c) to (d) and (f) to (h).

[0042] Figure 3(c) shows the state in which the ceiling support bracket 1 is attached to the upper flange h1 of the structural steel H, and Figure 3(d) shows the state in which two ceiling support brackets 1, 1 are attached with a gap between them in a direction perpendicular to the longitudinal direction of the structural steel H.

[0043] Figure 3(f) shows the state in which the ceiling material 5 and the insulating material 5D are attached to the extension portions 33, 33 on the left side (rear side) between adjacent ceiling support brackets 1, 1 attached to the structural steel H, and Figure 3(g) shows the state in which the ceiling material 5 and the insulating material 5D are attached to the extension portions 33, 33 on the right side (front side) of the ceiling support brackets 1, 1 attached to the structural steel H, but the ceiling material 5 and the insulating material 5D are attached without any gaps on the left side (rear side) between the ceiling support brackets 1, 1. Figure 3(h) shows the state in which ceiling material 5 and heat insulating material 5D are attached without any gaps on the left and right (rear and front sides) between adjacent ceiling support brackets 1, 1 attached to the structural steel H.

[0044] The construction method for the ceiling structure will be described below with reference to FIGS. 3(a) to 3(h). In this construction method, the process (first process) of attaching the ceiling support bracket 1 to the structural steel H is performed by aligning the inner brackets 2, 2 from the sides against both end portions h1a, h1a of the upper flange h1 of the structural steel H, as shown in Figures (a) to (d), and attaching the inner brackets 2, 2 so that the upper pieces 21 of each inner bracket 2 are aligned along the surface of the side end h1a of the upper flange h1. It should be noted that a mounting bolt 41 may be provided upright on the upper piece 21 of this inner fitting 2.

[0045] In this state, the outer fitting 3 is arranged so that the mounting bolts 41, 41 erected on the inner fittings 2, 2 attached to both side ends h1a, h1a of the upper flange h1 of the structural steel H are inserted through the holes 30, 30, and then the fasteners 4 (nuts 42, 42) are screwed onto the mounting bolts 41, 41. Here, when the fastener 4 (nuts 42, 42) is tightened from above, the inner metal fitting 2 is pulled upward and the outer metal fitting 3 is pressed downward. More specifically, the upper piece 21 of the inner fitting 2 rises so as to move away from the surface of the upper flange h1, and the lower piece 23 rises so as to approach the back surface of the upper flange h1. In contrast, the lower end of the side surface portion 32 of the outer fitting 3 remains in contact with the surface of the upper flange h1, but as the fasteners 4 (nuts 42, 42) continue to be tightened, the upper surface portion 31 of the outer fitting 3 is pressed downward, and the lower end of the side surface portion 32 is crimped onto the surface of the upper flange h1. If tightening is continued in this state, the lower piece 23 of the inner fitting 2 will be crimped onto the back surface of the upper flange h1, and the two will be attached together.

[0046] In this construction method, the process (second process) of attaching the ceiling material 5 to the ceiling support bracket 1 is to attach the ceiling material 5 in an erected state to the extension portions 33, 33 of adjacent ceiling support brackets 1, 1 attached to the upper flange h1 of the structural steel H, as shown in Figures 3(e) to (h). In addition, this ceiling material 5 may be installed on the structural steel H with the insulating material 5D attached to the face plate portion 51, or the ceiling material 5 may be installed on the structural steel H with the insulating material 5D attached. At each extension portion 33, the mounting receiving portions 53 and mounting overlapping portions 54 of the adjacent ceiling materials 5, 5 are arranged in an overlapping manner, and in this state, a fixing tool 5b, which is a mounting bolt, is pressed and fixed from above. Then, a ceiling structure is constructed in which the ceiling material 5 is laid without any gaps between the ceiling support brackets 1, 1. In this example, the ceiling materials 5, 5 are continuous with no gaps, but it is desirable to take measures shown in Figures 5 and 6 (described later) to prevent gaps from forming between the heat insulating materials 5D, 5D.

[0047] In this way, the construction method for the ceiling structure (construction method for the ceiling support bracket 1), from the first step to the second step, can be easily carried out without welding and without using special equipment or special jigs, and the ceiling support bracket 1 can be easily and firmly fixed to the upper flange h1 of the structural steel H.

[0048] 4(a) and (b) show an example of a ceiling / exterior structure in which the ceiling support 1 of Example 1 is used, and an exterior structure is constructed on the surface side of the ceiling structure, in which the mountain-shaped portion of the exterior material, which has an insulating material 8B formed of an amorphous elastic material interposed between an interior roofing material 8A and an exterior roofing material 9A, is supported by a support member 7A including a tight frame.

[0049] In addition, the symbol Y in the figure indicates a body arranged perpendicular to the structural steel H, and the mounting member indicated by the symbol 6A is a member that fixes the bottom of a tight frame-shaped support member 7A to the body Y in an upright position together with a fastening device 6B and a crimping device 6C at the side end of the body Y. A metal receiving bracket 7B is fixed to the top (upper piece) of this support member 7A by a fixture 7C, and an interior roofing material 8A is attached to the metal receiving bracket 7B, and a mounting bracket 9B is also fixed to the metal receiving bracket 7B. The exterior roofing material 9A is attached to this mounting bracket 9B in a holding state.

[0050] The exterior roofing material 9A used in this exterior structure has both side edges of a flat portion 91 that forms the valley portion raised at an angle to form side portions 92, 92, and the upper end of the side portion 92 is raised further to form a crimped portion 93.The crimped portions 93, 93 of adjacent exterior roofing materials 9A, 9A on the left and right are overlapped and crimped to connect them, and are attached in a retaining manner to mounting bracket 9B. The interior roofing material 8A has substantially the same configuration as the exterior roofing material 9A, except that it is attached to the receiving metal fittings 7B in a holding state instead of the mounting metal fittings 9B.

[0051] This ceiling and exterior structure has the ceiling material 5 attached to each of the ceiling brackets 1, 1 fixed at a predetermined interval to the structural steel H, and the exterior structure attached to support members 7A fixed at a predetermined interval to the structural steel H, so that the exterior structure is formed above the structural steel H and the ceiling structure is formed below the structural steel H.

[0052] Figures 5(a) and (b) show an example of a ceiling / exterior structure in which the ceiling support 1 of Example 1 is used, similar to Figure 4 above, but by using the extension decorative material 5E, the ceiling surface is continuous and the insulating layer is formed without any gaps in the ceiling structure. In this example, an exterior structure is constructed in which the mountain-shaped portion of the exterior material 9A' of the ceiling structure is supported by a support member 7A including a tight frame. The extension decorative material 5E used in this example has a gutter-shaped cross-sectional shape with raised side edges, and the back side of the insulating material 5D' is covered in a fitting manner by the extension decorative material 5E, so that the side edges of the ceiling material 5 face closely to the web h2 of the main body H, and the side edges of the insulating material 5D' arranged on the upper layer also face closely to the web h2 of the main body H. The exterior material 9A' and the insulating material 5D' correspond to the exterior roofing material 9A and the insulating material 5D in Figure 4, and the insulating material 5D' is formed wider and longer than the insulating material 5D, but since the other symbols in the figure are the same as the components in Figure 4, the same symbols are used in the figure and their explanations are omitted.

[0053] In this example, as mentioned above, the side end of the insulating material 5D' faces closely to the web h2 of the main body H at the extension decorative material 5E, so that the ceiling and exterior structure shown in Figures 5(a) and (b) is formed with no gaps between the ceiling material 5 and the insulating layer, preventing any loss of insulating and acoustic performance and improving the design from the inside of the room.

[0054] In contrast, Figures 5(c) and (d) show ceiling and exterior structures that do not use the extension decorative material 5E, but by using a rigid material such as a wood-based cement board as the insulation material 5D", there is no risk or concern of it falling off, so the extension decorative material 5E as described above is not necessary. As described above, this insulation material 5D" has different material properties, but like the insulation material 5D', it is formed wider and longer than the insulation material 5D in Figure 4. Therefore, the ceiling and exterior structure shown in Figures 5(c) and (d) also has a ceiling structure with no gaps in the insulation layer, preventing any loss of insulation and acoustic performance and improving the design from the inside of the room.

[0055] 6(a) to 6(f) and 7(a) to 7(d) show the construction procedure for the ceiling structure in the ceiling / exterior structure. 6(a) and 6(b) show a state in which the outer metal fitting 3 faces the upper flange h1 of the shaped steel H as indicated by the hatched arrow in the figure. 6(c) and (d) show the state in which ceiling materials 5 are about to be installed on both side ends of the outer metal fittings 3 attached to the upper flange h1 of the shaped steel H. Furthermore, in FIGS. 6(e) and 6(f), the procedure for installing the extension decorative material 5E inside the installed ceiling material 5 is shown by hatched arrows in the drawing. 7(a) and (b) show, by hatched arrows in the drawing, the procedure for installing a heat insulating material 5C' made of an irregular elastic material inside the attached extension decorative material 5E. Furthermore, FIGS. 7(c) and (d) show the completed ceiling structure, showing the state in which the heat insulating material 5C' is attached without any gaps. In the ceiling and exterior structures of these Figures 6 and 7, two layers of heat insulating material 8C, 5D' are arranged above and below. [Example]

[0056] 2(j) and (k) show the state in which the ceiling bracket 1' of Example 2 is attached to a structural steel H having an upper flange h1, and will be explained in comparison with the state in which the ceiling bracket 1 of Example 1 is attached to a structural steel H shown in FIGS. 2(a) and (b).

[0057] The inner fitting 2' of this Example 2 is a pair of horizontally U-shaped pieces of material, and is similar to Example 1 in that it has an upper piece 21 and a lower piece 23, but differs in that it has a middle piece 22' with a taller vertical dimension. Furthermore, the outer metal fitting 3' of this Example 2 is an inverted U-shaped molded material that is open at the bottom, and is similar to Example 1 in that it has an upper surface portion 31 similar to that of Example 1, but differs in that it has side surfaces 32' (front surface and rear surface) that are tall in vertical dimension.

[0058] In this Example 2, as in Example 1, tightening the fasteners 4 (nuts 42, 42) from above pulls the inner fitting 2 upward and presses the outer fitting 3 downward. In other words, the upper piece 21 of the inner fitting 2 rises so as to move away from the surface of the upper flange h1, and the lower piece 23 rises so as to approach the back surface of the upper flange h1. In contrast, the lower end of the side surface portion 32' of the outer fitting 3 remains in contact with the surface of the upper flange h1, but as tightening of the fasteners 4 (nuts 42, 42) continues, the upper surface portion 31 of the outer fitting 3 is pressed downward, and the lower end of the side surface portion 32' is crimped onto the surface of the upper flange h1. If tightening is continued in this state, the lower piece 23 of the inner fitting 2 is crimped onto the back surface of the upper flange h1, and the two fittings can be attached together. [Explanation of symbols]

[0059] 1.1' Ceiling bracket 2,2' inner fitting 21 Upper piece 22,22' Middle piece 23 Lower piece 3,3' outer fitting 30 holes 31 Top part 32,32' Side part (front part, rear part) 33 Extending part 4 Fasteners 41 Mounting bolt (upward bolt) 42 Nut 5. Ceiling materials 5b Fixing bolt 5c Fixing nut 5D, 5D', 5D" insulation 5E Extension Cosmetic Material 51 Face plate part 52 Side piece 53 Mounting portion 54 Mounting overlap part 6A Mounting material 6B Fastener 6C Crimping Tool 7A Support member (tight frame) 7B Receptacle 7C Fixture 8A Interior roofing material 8B Bracket 8C (irregular) insulation 9A Exterior roofing materials 9A' Exterior material 91 Plane section 92 Side part 9B Mounting bracket H-shaped steel h1 Upper flange h1a (side edge of upper flange) Y frame

Claims

1. A ceiling bracket attached to a structural steel having upper flanges extending outward at both ends, A pair of left and right inner metal fittings arranged to sandwich both side ends of the upper flange of the structural steel from above and below; an outer metal fitting disposed so as to cover the inner metal fitting; a fastener that is assembled so as to penetrate both the inner metal fittings with the outer metal fitting disposed so as to cover the inner metal fitting, The outer metal fitting is integrally attached onto the upper flange of the structural steel, and a ceiling material can be attached thereto.

2. 2. The ceiling bracket according to claim 1, wherein the outer member is attached so as to extend from the upper flange of the structural steel, and the ceiling material is erected on the extension.

3. A ceiling material mounting structure using the ceiling support bracket according to claim 1 or 2, the ceiling material is provided with an attachment receiving portion at one side end of a face plate portion that can be fitted to the outer metal fitting, and an attachment overlap portion at the other side end that can be fitted to the attachment receiving portion, A ceiling mounting structure characterized in that the mounting receiving portion and the mounting overlap portion of the ceiling material are fitted into the extended portion of each of the ceiling support fittings attached to the structural steel at a predetermined interval.

4. An exterior structure using the ceiling bracket according to claim 1 or 2, A ceiling / exterior structure characterized in that the ceiling material is attached to each of the ceiling support brackets fixed to the structural steel at a predetermined interval, and an exterior structure is attached to support members fixed to the structural steel at a predetermined interval.

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