Ceiling support bracket, its installation method, ceiling material mounting structure using this ceiling support bracket, and exterior structure

Abstract

To provide a ceiling receiving fitting which can be mounted on shaped steel (roof purlin) used as a framework of a roof from above without welding, and enables various ceiling materials to be mounted on its upper surface.SOLUTION: A ceiling receiving fitting is mounted on shaped steel 1 having an upper flange 11 and includes: an inside fitting 2 which is arranged so as to sandwich the upper flange of the shaped steel from above and below, in which a sandwiching lower piece 22 is provided along the rear face of the upper flange and an upward bolt 24 is erected from a sandwiching upper piece 23; an outside fitting 3 having an upper face part 31 having a hole 310 to which the upward bolt is inserted, extension pieces 32, 32' formed downwards from its end edge, and receiving pieces 33, 33' which are formed outward horizontally from the extension pieces; and a fastener 4 which is fastened to the upward bolt in a state where the outside fitting is assembled on the inside fitting, wherein the receiving pieces are formed in a base end 11b direction from a tip 11a of the upper flange or in a tip direction from the base end, with respect to the shaped steel, and enable mounting of a ceiling material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ceiling bracket that can be attached from above without welding to structural steel (roof purlins) used as the framework of a roof, and to which various ceiling materials can be attached on its upper surface, as well as to a method of installation, a ceiling material mounting structure using this ceiling bracket, and an 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 involves constructing a wall surface by erecting wall materials such as ceiling materials on structural steel (structural materials), and therefore is a configuration that is adopted before the roof is constructed, so it could not be adopted for existing buildings.

[0004] On the other hand, Patent Documents 2 and 3 have proposed a structure (method) for constructing a ceiling or other wall surface on an existing roof (on the building frame regardless of whether it has a roof or not), in which the ceiling surface is finished by arranging ceiling materials on the frame, which is made of H-shaped steel or C-shaped steel, via supports, etc. [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, the steel members that make up the framework of a building are often spaced at irregular intervals due to construction errors, etc., which makes it difficult to provide stable support for 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 purpose of this invention is 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 method of installation, a ceiling material mounting structure using this ceiling bracket, and an exterior structure. [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, comprising: an inner bracket that is arranged to sandwich the upper flange of the structural steel from above and below, with the sandwiching lower piece running along the back surface of the upper flange and an upward bolt erected on the sandwiching upper piece; an outer bracket that has an upper surface portion with a hole through which the upward bolt is inserted, extension pieces formed downward from each of the edge of the upper surface, and receptacle pieces formed horizontally outward from the extension pieces; and a fastener that is tightened to the upward bolt when the outer bracket is assembled to the inner bracket, wherein each of the receptacle pieces is formed with respect to the structural steel in a direction away from the tip or base end of the upper flange, and is capable of attaching a ceiling material. In addition, the "lower clamping piece" refers to the lower piece that is located on the lower side when clamping the upper flange of the structural steel, and the "upper clamping piece" refers to the upper piece that is located on the upper side when clamping the upper flange of the structural steel.

[0009] The present invention also proposes a ceiling support fitting as described above, characterized in that the outer fitting has opposing side ends of the upper surface portion bent downward, with the lower ends abutting on the upper flange.

[0010] Furthermore, the present invention also proposes a method for installing the ceiling bracket, comprising: a first step of arranging the lower piece of the inner bracket so that it is positioned on the back side of the upper flange and the upper piece is positioned on the front side; a second step of assembling the outer bracket so that an upward bolt erected on the upper piece is inserted into a hole provided on the upper surface; and a third step of tightening the fastener onto the upward bolt, thereby integrally attaching the ceiling bracket to the upper flange of the structural steel.

[0011] 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.

[0012] Furthermore, the present invention also proposes 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]

[0013] The ceiling bracket of the present invention can be attached from above to the structural steel (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 time and strength to carry 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.

[0014] Furthermore, when the lower ends of the opposing side ends (regulating pieces) of the upper surface portion are bent downward and abut against the upper flange, the outer fitting has high strength against pressure in the vertical direction, so it can be attached stably without deformation even when the fastener is tightened excessively.

[0015] In addition, the installation method for the ceiling support bracket includes a first step of arranging the lower piece of the inner bracket so that it is positioned on the back side of the upper flange and the upper piece is positioned on the front side; a second step of inserting an upward bolt erected on the upper piece into a hole provided on the upper surface; and a third step of tightening the fastener onto the upward bolt, thereby integrally attaching the ceiling support bracket to the upper flange of the structural steel.Therefore, all steps are welding-free and can be easily performed from above without the use of special equipment or special jigs, and the bracket can be easily and firmly fixed to the upper flange of the structural steel.

[0016] 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 be fitted into the receiving piece, and an attachment overlap portion at the other side end that can be fitted 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 the ceiling material can be arranged without any gaps.

[0017] Furthermore, in the 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 on the upper side of the structural steel and the ceiling structure is formed on the lower side of the structural steel. [Brief explanation of the drawings]

[0018] [Figure 1] 1A is a perspective view showing a state in which the ceiling bracket of the present invention is placed against a structural steel, and FIG. 1B is a perspective view showing a state in which the ceiling bracket is attached. [Figure 2] (a) A side view showing the state in which the inner metal fittings are arranged on the structural steel, (b) a front view thereof, (c) a side view showing the state in which the outer metal fittings are further arranged, (d) a front view thereof, (e) a side view showing the state in which the fasteners are further tightened, and (f) a front view thereof. [Figure 3] FIG. 10 is a perspective view showing a state in which a ceiling material is partially attached to a ceiling support bracket attached to structural steel. [Figure 4] FIG. 1A is a front view showing an example of an exterior structure using the ceiling receiver of Example 1, FIG. 1B is a cross-sectional view taken along line bb, and FIG. 1C is a cross-sectional view taken along line cc. DETAILED DESCRIPTION OF THE INVENTION

[0019] The ceiling support fitting of the present invention is a component attached to a structural steel having an upper flange, and is arranged to sandwich the upper flange of the structural steel from above and below, and comprises an inner fitting having a lower piece that is located on the lower side when sandwiched along the back surface of the upper flange, and an upper piece that is located on the upper side when sandwiched and has an upward bolt erected on it; an outer fitting having an upper surface portion with a hole through which the upward bolt is inserted, extension pieces formed downward from each of the edge of the upper surface, and receiving pieces formed horizontally outward from the extension pieces; and a fastener that is tightened to the upward bolt when the outer fitting is assembled to the inner fitting, and each of the receiving pieces is formed with respect to the structural steel in a direction away from the tip or base end of the upper flange, allowing ceiling material to be attached.

[0020] This ceiling support bracket is a component attached to a structural steel with an upper flange, 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 an upper flange, and may be a C-shaped steel as in the illustrated embodiment described later, or an L-shaped steel or a Z-shaped steel.

[0021] As described above, the inner fitting used in this ceiling support fitting is arranged so as to sandwich the upper flange of the structural steel from above and below, with the lower piece located on the lower side when sandwiched running along the back surface of the upper flange, and an upward-facing bolt being erected on the upper piece located on the upper side when sandwiched. It is desirable that this inner metal fitting be an inverted U-shaped molding with a groove, as in the illustrated embodiment described below, so that each of the upper and lower pieces has high strength against pressure in the vertical direction. In this case, the groove can be inserted from the tip side of the upper flange. The upward bolt has a configuration in which its lower end (head) is fixed integrally to the upper piece of the inner fitting, and the upward bolt may be installed upright on the upper piece by inserting the upward bolt from the back side of the upper piece, which has a hole, as in the illustrated example described below.

[0022] The outer fitting used in this ceiling support fitting is configured to have an upper surface portion with a hole through which the upward bolt is inserted, as described above, extension pieces formed downward from each of the edges of the upper surface, and receiving pieces formed horizontally outward from the extension pieces. The edges refer to the edges that will become the leading and base ends of the upper flange when assembled. Therefore, each of the support pieces is formed to extend away from the leading end or the base end of the upper flange relative to the structural steel. Furthermore, the support pieces can be used to attach ceiling materials. This outer fitting has holes formed in its upper surface, and is assembled from above so that the holes match the upper ends of the upward-facing bolts of the installed inner fitting, with the upward-facing bolts passing through the upper surface. Furthermore, when the opposing side ends (regulating pieces) of the upper surface are bent downward so that their lower ends abut on the upper flange, as in the illustrated embodiment described below, the outer fitting has high strength against pressure in the vertical direction, allowing for stable installation without deformation even when the fastener is overtightened.

[0023] The fastener used in this ceiling support metal fitting is configured to be fastened to the upward 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 upward bolt and tightened, pulling the inner bracket upward and pressing the outer bracket downward to secure it in place, allowing the ceiling support bracket to be attached integrally to the structural steel.

[0024] It is to be noted that a ceiling material can be attached to the letter receiving piece, and it is desirable that this ceiling material has a structure that allows it to be attached to the letter receiving piece and that it can be attached stably. The ceiling material is a component having a panel portion that forms the ceiling surface, and this panel portion 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.

[0025] 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 (roof purlins) used as the roof framework without welding, and various ceiling materials can be attached to its upper surface.

[0026] Furthermore, the present invention also proposes a method for installing the ceiling bracket, comprising: a first step of arranging the lower piece of the inner bracket so that it is positioned on the back side of the upper flange and the upper piece is positioned on the front side; a second step of assembling the outer bracket so that an upward bolt erected on the upper piece is inserted into a hole provided on the upper surface; and a third step of tightening the fastener onto the upward bolt, thereby integrally attaching the ceiling bracket to the upper flange of the structural steel.

[0027] In the first step of this construction method, as described above, the lower piece of the inner metal fitting is disposed on the back side of the upper flange, and the upper piece is disposed on the front side. In the illustrated embodiment described below, a groove-like portion is provided in the inner fitting, and the groove-like portion faces the tip side of the upper flange. In this state, the inner fitting is slid toward the base end side, and the inner fitting is arranged in a loose fit with respect to the upper flange.

[0028] The second step in this construction method is to assemble the outer metal fitting so that the upward bolts erected on the upper piece as described above are inserted into the holes provided in the upper surface portion. In the illustrated embodiment described below, the outer metal fitting is assembled from above so that the upward bolt passes through the hole in the top surface and the restricting piece is positioned outside the inner metal fitting.

[0029] The third step in this construction method is to fasten the fastener to the upward bolt as described above, thereby integrally attaching the ceiling bracket to the upper flange of the structural steel. In the illustrated embodiment described below, when the fastener is screwed onto the upper end of the upward bolt and tightened, the fastener descends until it abuts the upper surface of the outer fitting, and by further tightening the fastener, it cannot descend any further, so that the upper piece of the inner fitting is pulled upward and the upper surface of the outer fitting is pressed downward, allowing the ceiling support fitting to be firmly and integrally fixed onto the upper flange.

[0030] In this way, the ceiling bracket of the present invention can be easily attached to the upper flange of the steel beam without welding, and can be easily and firmly attached from above without using special equipment or special jigs. Therefore, there is no need for the time and strength to carry various welding tools to the roof, and there is no need for large equipment to assemble scaffolding or the like inside the room to perform installation from below, making the installation itself easy to perform.

[0031] The mounting structure (ceiling structure) of the ceiling material using the ceiling support fittings is formed by fitting the mounting receiving portion and mounting portion of the ceiling material into the receiving piece of each ceiling support fitting, so that the ceiling material can be arranged without any gaps.

[0032] Furthermore, the exterior structure using the ceiling support brackets is characterized in that the ceiling material is attached to each of 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.

[0033] 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]

[0034] Example 1 of the ceiling bracket of the present invention comprises an inner bracket 2, an outer bracket 3, and a fastener 4 attached to a structural steel 1 having an upper flange 11 shown in Figures 1 and 2, and the receiving pieces 33, 33' provided on the outer bracket 3 are formed in the direction from the tip 11a to the base end 11b of the upper flange 11 or from the base end 11b to the tip 11a with respect to the structural steel 1, and can be used to attach a ceiling material (not shown).

[0035] The structural steel 1 in this Example 1 is a C-shaped steel, and is composed of an upper flange 11, a lower flange 12, and a web 13. In the drawing, reference numeral 11a denotes the tip end of the upper flange 11, and reference numeral 11b denotes the base end of the upper flange 11. The upper flange 11 is formed so as to taper from the base end 11b toward the tip end 11a, so that while its upper surface is horizontal, its lower surface is inclined.

[0036] The inner fitting 2 is arranged so as to sandwich the upper flange 11 of the structural steel 1 from above and below, and in the sandwiched state, the lower piece 23, which is located on the lower side, runs along the back surface of the upper flange 11, and an upward bolt 24 is erected on the upper piece 22, which is located on the upper side in the sandwiched state. The inner fitting 2 in Example 1 is formed from an inverted U-shaped molded material having a groove 21, so that each of the upper piece 22 and the lower piece 23 has high strength against pressure in the vertical direction. The inner fitting 2 can be arranged so that the groove 21 is inserted from the tip 11a side of the upper flange 11. The insertion depth of the groove 21 is formed to be approximately the same as the width of the upper flange 11, so that the tip of the upper piece 22 after arrangement is arranged so as to follow the base end 11b of the upper flange 11, as shown in Figure 2(a).

[0037] Furthermore, the upward bolt 24 is configured so that its lower end (head) is fixed integrally to the upper piece 22 of the inner fitting 2, and by inserting a hexagonal bolt from the back side of the upper piece 22, which has a hole, the upward bolt 24 (threaded portion) is erected (exposed) from the front side of the upper piece 22. In this embodiment 1, the upper piece 22 has a shape in which both side pieces of a horizontal piece are folded downward (consisting of one horizontal piece and two vertical pieces), and the lower piece 23 consists of two vertical pieces spaced a predetermined distance apart.

[0038] The outer metal fitting 3 is configured to include an upper surface portion 31 having a hole 310 through which the upward bolt 24 is inserted, extension pieces 32, 32' formed downward (vertically) from the edge of the upper surface portion 31, and receiving pieces 33, 33' formed horizontally outward from the extension pieces 32, 32'. The edges refer to the edges that will be on the tip 11a and base 11b sides of the upper flange 11 when assembled. Therefore, the front receiving piece 33 is formed to extend further forward from the tip 11a of the upper flange 11, and the rear receiving piece 33' is formed to extend further rearward from the base 11b of the upper flange 11. In other words, these receiving pieces 33, 33' are formed to extend in directions away from the lower ends of the vertical extension pieces 32, 32', respectively.

[0039] Additionally, the outer fitting 3 in this Example 1 is provided with restriction pieces 34, 34 formed downward (vertically) from the side edges of the upper surface portion 31, and the lower ends of these restriction pieces 34, 34 (central portions 341) abut on the upper flange 11. Therefore, the outer fitting 3 formed by the horizontal upper surface portion 31 and the vertical restriction pieces 34, 34 has high strength against pressure in the vertical direction, and therefore can be stably attached without deformation even when the fastener 4 is excessively tightened. Furthermore, the distance between the opposing restriction pieces 34, 34 is formed slightly larger than the width of the inner fitting 2, so that the upper surface portion 31 can be attached to the upper piece 23 of the inner fitting 2 in a mating manner. In this way, the upper surface portion 31 of the outer metal fitting 3 of Example 1, which is formed in a rectangular shape, has downward extending pieces 32, 32' formed on opposing end edges, and downward restricting pieces 34, 34 formed on opposing side edges.

[0040] Furthermore, by removing (cutting from the lower end) the central portion 341 at the lower end of this regulating piece 34 to the width dimension of the upper flange 11, it is formed shorter than the tip portion 342 and base portion 343. Therefore, the lower end of the central portion 341 abuts against the upper flange 11, and the tip portion 342 is disposed in engagement with the tip 11a of the upper flange 11, and the base portion 343 is disposed in engagement with the base end 11b of the upper flange 11. Also, as described above, the regulating piece 34 is formed on each of the two side edges of the upper surface portion 31, and therefore the central portion 341, tip portion 342, and base portion 343 are formed on each regulating piece 34, so that it is stably disposed in a fitted state on the upper flange 11. Of course, this alone allows it to move along the upper flange 11, but as described above, the upward bolt 24 is inserted through the hole 310, so it is stably attached in the appropriate position.

[0041] The fastener 4 is a member (nut) that is fastened to the upward bolt 24 in a state in which the outer metal fitting 3 is assembled to the inner metal fitting 2. This fastener 4 is screwed onto the upper end of the upward bolt 24 and tightened, thereby pulling the inner fitting 2 upward and pressing the outer fitting 3 downward to secure it in place, so that the ceiling support fitting can be attached integrally to the structural steel 1.

[0042] In this way, the ceiling support bracket of the present invention can be attached from above to the structural steel 1 (roof purlin) used as the framework of the roof without welding, and various ceiling materials can be attached to the upper surface. Therefore, there is no need for the effort or strength required to bring various welding tools to the roof side, and there is no need for huge equipment to assemble scaffolding etc. inside the room to carry out construction from below, so the construction itself can be carried out easily.

[0043] Next, the method of installing the ceiling bracket will be described. In the first step of this construction method, as described above, the inner fitting 2 is arranged so that the lower piece 23 is positioned on the back side of the upper flange 11 and the upper piece 22 is positioned on the front side. That is, as shown in Figure 1(a), the groove-like portion 21 of the inner fitting 2 faces the tip end 11a of the upper flange 11, and in this state the inner fitting 2 is slid toward the base end 11b as indicated by the white arrow in the figure, and the inner fitting 2 is arranged in a loose fit with respect to the upper flange 11 as shown in Figure 2(a). Prior to construction, a hexagonal bolt is inserted from the back side of the upper piece 22, in which a hole has been drilled, so that a hexagonal column-shaped head is positioned on the back side of the upper piece 22, and a threaded portion (upward bolt 24) is positioned upright on the front side. However, since the upper piece 22 has a shape in which both side pieces of a horizontal piece are bent downward, the head is positioned in the space surrounded by the horizontal piece and both side pieces, as shown in Figure 2(b).

[0044] In the second step of this construction method, as described above, the outer fitting 3 is assembled so that the upward bolts 24 erected on the upper piece 22 are inserted into the holes 310 formed in the upper surface portion 31. That is, as shown in FIG. 1(a), the outer fitting 3 is positioned from above so that the upward bolts 24 are inserted into the holes 310 in the upper surface portion 31 and so that the extension pieces 32, 32' straddle the upper flange 11, and in this state the outer fitting 3 is slid downward as indicated by the outline arrow in the figure, and assembled so that the outer fitting 3 is positioned outside the inner fitting 2 as shown in FIG. 2(c). Note that when arranging the upward bolts 24 to be inserted into the holes 310 in the upper surface portion 31, the outer fitting 3 is attached so that the restricting pieces 34, 34 of the outer fitting 3 are positioned outside the opposing vertical pieces of the inner fitting 2, as described above.

[0045] In the third step of this construction method, as described above, the fastener 4 is tightened onto the upward bolt 24, thereby integrally attaching the ceiling bracket to the upper flange 11 of the structural steel 1. That is, when the fastener 4 is screwed onto the upper end of the upward bolt 24 and tightened, the fastener 4 descends until it comes into contact (abuts) with the upper surface 31 of the outer bracket 3, as shown in FIG. 2(e). Further tightening prevents the fastener 4 from descending any further, so that the inner bracket 2 (upper piece 22) is pulled upward and the outer bracket 3 (upper surface 31) is pressed downward, allowing the ceiling bracket to be firmly and integrally fixed onto the upper flange 11.

[0046] In this way, the installation method for the ceiling bracket of the present invention, from the first step to the second step and the third step, can be easily carried out without welding and without using special equipment or special jigs, and can easily and firmly fix the bracket to the upper flange 11 of the structural steel 1.

[0047] Furthermore, the mounting structure (ceiling structure) of the ceiling material 6 of the present invention is such that, as shown in Figure 3, the ceiling material 6 has an attachment receiving portion 62 at one side end of the panel portion 61 that can fit onto the receiving pieces 33, 33', and an attachment overlap portion 63 at the other side end that can fit onto the attachment receiving portion 62, and the attachment receiving portion 62 and the attachment overlap portion 63 of the ceiling material 6 are fitted onto the receiving pieces 33, 33' of each of the ceiling receiving fittings attached to the structural steel 1 at a predetermined interval. In the drawing, reference numeral 5 denotes an H-shaped steel, and the C-shaped steel 1 is installed in the center thereof.

[0048] The ceiling material 6 is a molded material formed by molding both side edges of a rectangular metal panel material, and each side edge of a flat panel portion 61 is folded up into an approximately inverted J shape to form an attachment receiving portion 62 and an attachment overlap portion 63.In the attached state, the attachment overlap portion 63 is positioned outside the attachment receiving portion 62, so the attachment overlap portion 63 is formed slightly larger than the attachment receiving portion 62. In Figure 3, the mounting receiving portion 62 and mounting overlap portion 63 of the ceiling material 6 are attached from above to the receiving pieces 33, 33' of the outer metal fitting 3 of the ceiling bracket. More specifically, the mounting portion 62 of the ceiling material 6 is arranged so as to drop from above into the receiving piece 33 or receiving piece 33' of the outer metal fitting 3, and the mounting overlap portion 63 of the adjacent ceiling material 6 is attached in a fitted manner from above, and then fastened by driving in fasteners 6b. The dotted lines in the figure indicate the driving in of the fasteners 6b. In addition, in FIG. 3, no heat insulating material is provided on the upper surface side of the face plate portion 61 of the ceiling material 6, but the ceiling structure may be provided with heat insulating material as shown in FIG. 4 described later.

[0049] Figure 4(a) shows an example of an exterior structure using the ceiling support fittings, in which an insulating material 7 made of an amorphous elastic material is arranged on the surface side of the panel portion 61 of the ceiling material 6 to form a ceiling structure, and this amorphous insulating material 7 is deformed and arranged from the upper side from the panel portion 61 of the ceiling material 6 to the edge (the fitting portion of the mounting receiving portion 62 and the mounting overlap portion 63). In the drawing, reference numeral 8A denotes a ceiling frame erected on the structural steel 1, and reference numeral 8B denotes a receiving bracket attached to the upper end of the ceiling frame 8A by a fixing device 8f. Reference numerals 8C and 8D denote mounting brackets for fixing the ceiling frame 8A, and are fixed integrally with the bottom edge of the ceiling frame 8A to the upper flange 11 of the structural steel 1 by a fastener 8e. Reference numerals 2 and 3 denote the ceiling receiving brackets (inner and outer brackets).

[0050] A cross-sectional view taken along line bb in FIG. 4(a) is shown in FIG. 4(b), and a cross-sectional view taken along line cc in FIG. 4(c). As shown in Figure 4(b), the mounting fittings (8C, 8D) are arranged by arranging the roughly U-shaped first fitting 8C above and below the upper flange 11 of the structural steel 1 on which the bottom of the tight frame 8A is placed, and by placing the roughly N-shaped second fitting 8D along the upper surface of the upper flange 11, and then tightening the fastener 8e from above, the mounting fittings (8C, 8D) can be fixed so that the bottom of the tight frame 8A is sandwiched between the upper flange 11 of the structural steel 1. In addition, the receiving bracket 8B fixed to the upper end of the tight frame 8A has its front and rear ends rising from the bottom surface, which is the fixed part, and its side and upper ends support the back surface of the side part of the exterior material 9A, which is a vertically roofed exterior material. Furthermore, the exterior material 9A has side portions 92, 92 that rise at an angle from the side edge of the substantially horizontal face plate portion 91, and an attachment molding portion that is attached to the receiving metal fitting 8B is formed at the upper end of the side portion 92. Furthermore, the cap material 9B is a member that is attached so as to straddle adjacent exterior materials 9A, 9A, and can be elastically fitted (engaged) simply by pressing from above. The cap material 9B forms the mountain-shaped portions of the exterior surface, and the flat face plate portion 91 of the exterior material 9A forms the valley-shaped portions of the exterior surface.

[0051] The portion where the ceiling support fittings (inner fitting 2 and outer fitting 3) shown in Figure 4(c) are used is as described in Figures 1 to 3 above, and an exterior surface having the mountain-shaped portions and valley-shaped portions described above is formed on the upper surface thereof.

[0052] The exterior structure of Figure 4(a) constructed in this manner has the ceiling material 6' attached to each of the ceiling brackets 2, 3 fixed at a predetermined interval to the structural steel 1, and the exterior structure (9A, 9B) attached to support members (8A to 8f) fixed at a predetermined interval to the structural steel 1, so that the exterior structure is formed above the structural steel 1 and the ceiling structure is formed below the structural steel 1. [Explanation of symbols]

[0053] 1 Section steel 11 Upper flange 11a (Top flange) tip 11b (base end of upper flange) 12 Lower flange 2 Inner bracket 21 Groove 22 Upper piece 23 Lower piece 3 Outer metal fittings 31 Top part 310 holes 32,32' extension piece 33,33' receipt piece 4 Fasteners 6 Ceiling materials 6b Fixture 61 Face plate part 62 Mounting portion 63 Mounting overlap part 7. Insulation 8A Tight Frame 8B Bracket 9A Exterior material 9B Cap Material

Claims

1. A ceiling bracket attached to a structural steel with an upper flange, an inner metal fitting arranged to sandwich the upper flange of the structural steel from above and below, with the sandwiching lower piece running along the back surface of the upper flange and the sandwiching upper piece having an upward bolt erected thereon; an outer metal fitting including an upper surface portion having a hole through which the upward bolt is inserted, extension pieces formed downward from the edge of the upper surface portion, and receiving pieces formed horizontally outward from the extension pieces; a fastener that is tightened onto the upward bolt in a state in which the outer metal fitting is assembled to the inner metal fitting, The ceiling bracket is characterized in that each of the receiving pieces is formed on the structural steel in a direction away from the tip or base end of the upper flange, allowing ceiling material to be attached.

2. 2. The ceiling bracket according to claim 1, wherein the outer bracket has opposite side edges of the upper surface bent downward so that the lower ends thereof abut on the upper flange.

3. A method for installing the ceiling bracket according to claim 1 or 2, a first step of arranging the inner metal fitting so that the lower piece is positioned on the back surface side of the upper flange and the upper piece is positioned on the front surface side; a second step of assembling the outer metal fitting so that the upward bolt erected on the upper piece passes through a hole formed in the upper surface portion; a third step in which the ceiling bracket is integrally attached to the upper flange of the structural steel by tightening the fastener to the upward bolt; A method for installing a ceiling bracket, comprising:

4. A ceiling material mounting structure using the ceiling support bracket according to claim 1 or 2, The ceiling material has an attachment receiving portion at one side end of a face plate portion that can be fitted onto the receiving piece, and an attachment overlap portion at the other side end that can be fitted onto the attachment receiving portion, A ceiling material mounting structure characterized in that the mounting receiving portion and the mounting overlap portion of the ceiling material are fitted into the receiving pieces of each of the ceiling support fittings attached to the structural steel at a predetermined interval.

5. An exterior structure using the ceiling bracket according to claim 1 or 2, An 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 the exterior structure is attached to support members fixed to the structural steel at a predetermined interval.

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