Fixed reinforcement members and ceiling structure

Abstract

To provide a reinforcement member capable of preventing a ceiling material from being dropped and a ceiling structure.SOLUTION: A fixing reinforcement member (a reinforcement metal fitting 100) is constructed between a skeleton A of a building H and a support member supporting a ceiling joist 50 of the building H (a ceiling joist receiver 30, a ceiling joist receiving and transferring member 40) and is fixed with a ceiling joist receiving brace 70 and a ceiling joist receiving and transferring brace 80 arranged in a cross shape in a plan view. The fixing reinforcement member includes a ceiling material fixing part to which a ceiling surface material 60 supported by the ceiling joist 50 is fixed, a ceiling joist receiving fixing part and a ceiling joist receiving and transferring fixing part to which the support member is fixed, and a ceiling joist receiving brace fixing part and a ceiling joist receiving and transferring brace fixing part to which ends of a plurality of braces are fixed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technique for a fixed reinforcing member and a ceiling structure. [Background technology]

[0002] Conventionally, techniques for fixing reinforcing members to which braces used in ceiling structures are fixed are publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 describes a reinforcing bracket that is fixed to the intersection of a siding that supports a ceiling surface material and a siding receiver. The reinforcing bracket fixes the lower part of diagonal braces that are arranged in a cross shape in a plan view.

[0004] With this configuration, the soffit supports and soffits are firmly fixed to the braces, so that seismic forces or horizontal forces during an earthquake can be transmitted directly from the soffit supports and soffits to the braces. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4845212 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the technology described in Patent Document 1, stress acts on the lower part of the brace from multiple directions during an earthquake, which may cause deformation or damage (hereinafter simply referred to as "deformation") to the joist support and joist located around the brace. If the joist support and joist are deformed in this way, there is a possibility that the ceiling material may fall off.

[0007] The present invention was made in consideration of the above-mentioned circumstances, and the problem it aims to solve is to provide a fixed reinforcement member and a ceiling structure that can prevent ceiling materials from falling off. [Means for solving the problem]

[0008] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0009] That is, in claim 1, a rafter that supports the ceiling material of the building from above, a rafter support member that is hung from the framework of the building and supports the rafter from above via a clip member, a rafter joint member that is fixed to a plurality of the rafter support members from above so as to intersect in a plan view and supports the rafter via a plurality of the rafter support members, and a plurality of braces that are installed between the framework of the building and the rafter support member and the rafter joint member and are arranged in a cross shape in a plan view. The ceiling material fixing portion has a ceiling material fixing portion to which the ceiling material is fixed, a furring strip receiving member fixing portion to which the furring strip receiving member is fixed, a furring strip connecting member fixing portion to which the furring strip connecting member is fixed, and a brace fixing portion to which the ends of the plurality of braces are fixed, and the ceiling material fixing portion is provided in pairs in two areas facing each other across the intersecting portion of the four areas of the ceiling material that are partitioned on four sides in a plan view based on the intersecting portion when viewed from above by the furring strip receiving member and the furring strip connecting member intersecting. The plurality of braces include a pair of first braces arranged parallel to the joist support member in a plan view, and a pair of second braces arranged parallel to the joist support member in a plan view, and the fixing reinforcement member is a first fixing reinforcement member to which the pair of first braces are respectively fixed via the brace fixing portion, and a second fixing reinforcement member to which the pair of second braces are respectively fixed via the brace fixing portion and formed separately from the first fixing reinforcement member, and the first fixing reinforcement member is fixed to two opposing regions of the four regions of the ceiling material across the intersecting portion via the ceiling material fixing portion, and the second fixing reinforcement member is fixed to two regions of the four regions different from the region to which the first fixing reinforcement member is fixed via the ceiling material fixing portion. It is something.

[0010] In claim 2, The siding support member fixing portion has a notch cut out at a position corresponding to a hanging member for hanging the siding support member from the frame. It is something.

[0011] In claim 3, At least one of the first fixed reinforcing member and the second fixed reinforcing member has a first fixing portion fixed to the other of the first fixed reinforcing member and the second fixed reinforcing member. It is something.

[0012] In claim 4, A fixed reinforcing member used in a ceiling structure that includes: a siding that supports the ceiling material of a building from above; a siding support member that is hung from the building's framework and supports the siding from above via a clip member; a siding joint member that is fixed to a plurality of the siding support members from above so as to intersect in a plan view and supports the siding via a plurality of the siding support members; and a plurality of braces that are installed between the building's framework and the siding support member and the siding joint member and are arranged in a cross shape in a plan view. The ceiling material fixing portion has a ceiling material fixing portion to which the ceiling material is fixed, a rafter support member fixing portion to which the rafter support member is fixed, a rafter support member fixing portion to which the rafter support joint member is fixed, and a brace fixing portion to which the ends of the plurality of braces are fixed, and the ceiling material fixing portion is provided in pairs in two areas facing each other across the intersecting portion of the four areas of the ceiling material that are partitioned on four sides in a plan view based on the intersecting portion when viewed from above by the rafter support member and the rafter joint member intersecting, The plurality of braces include a pair of first braces that are arranged so that the direction in which they move away from each other in a plan view is parallel to the furring strip support member, and a pair of second braces that are arranged so that the direction in which they move away from each other in a plan view is parallel to the furring strip support member. The fixed reinforcement member is composed of a third fixed reinforcement member to which one of the pair of first braces and one of the pair of second braces are respectively fixed via the brace fixing portion, and a fourth fixed reinforcement member to which the other of the pair of first braces and the other of the pair of second braces are respectively fixed via the brace fixing portion and formed separately from the third fixed reinforcement member. The third fixed reinforcement member is fixed via the ceiling material fixing portion to one of two regions that face each other across the intersecting portion, and the fourth fixed reinforcement member is fixed via the ceiling material fixing portion to one region of the two regions that face each other across the intersecting portion, different from the region to which the third fixed reinforcement member is fixed. It is something.

[0013] In claim 5, At least one of the third fixed reinforcing member and the fourth fixed reinforcing member has a second fixing portion fixed to the other of the third fixed reinforcing member and the fourth fixed reinforcing member. It is something.

[0014] In claim 6, A ceiling structure comprising: a rafter that supports the ceiling material of a building from above; a rafter support member that is suspended from the framework of the building and supports the rafter from above via a clip member; a rafter joint member that is fixed to a plurality of the rafter support members from above so as to intersect in a plan view and supports the rafter via a plurality of the rafter support members; a plurality of braces that are installed between the framework of the building and the rafter support members and the rafter joint members and are arranged in a cross shape in a plan view; and a fixed reinforcement member, wherein the fixed reinforcement member has a ceiling material fixing portion to which the ceiling material is fixed, a rafter support member fixing portion to which the rafter support member is fixed, a rafter joint member fixing portion to which the rafter joint member is fixed, and a brace fixing portion to which the ends of the plurality of braces are fixed, and the ceiling material fixing portion is a portion of the ceiling material that is fixed to the rafter support member and the rafter joint member that is fixed to the intersecting portion in a plan view, and The plurality of braces include a pair of first braces arranged parallel to the joist support member in a plan view, and a pair of second braces arranged parallel to the joist support member in a plan view, and the fixing reinforcement members are first fixing reinforcement members to which the pair of first braces are respectively fixed via the brace fixing portions, and second fixing reinforcement members to which the pair of second braces are respectively fixed via the brace fixing portions and formed separately from the first fixing reinforcement members. The first fixing reinforcement members are fixed to two of the four regions of the ceiling material that face each other across the intersecting portion via the ceiling material fixing portions, and the second fixing reinforcement members are fixed to two of the four regions that are different from the region to which the first fixing reinforcement members are fixed via the ceiling material fixing portions. It is something.

[0015] In claim 7, A ceiling structure comprising: a siding that supports the ceiling material of a building from above; a siding support member that is suspended from the building's framework and supports the siding from above via a clip member; a siding joint member that is fixed to a plurality of the siding support members from above so as to intersect in a plan view and supports the siding via a plurality of the siding support members; a plurality of braces that are installed between the building's framework and the siding support member and the siding joint member and are arranged in a cross shape in a plan view; and a fixed reinforcing member. The ceiling material fixing portion has a ceiling material fixing portion to which the ceiling material is fixed, a furring strip receiving member fixing portion to which the furring strip receiving member is fixed, a furring strip connecting member fixing portion to which the furring strip connecting member is fixed, and a brace fixing portion to which the ends of the plurality of braces are fixed, and the ceiling material fixing portion is provided in pairs in two areas facing each other across the intersecting portion of the four areas of the ceiling material that are partitioned on four sides in a plan view based on the intersecting portion when viewed from above by the furring strip receiving member and the furring strip connecting member intersecting. The plurality of braces include a pair of first braces arranged such that the direction in which they are spaced apart from each other in a plan view is parallel to the joist support member, and a pair of second braces arranged such that the direction in which they are spaced apart from each other in a plan view is parallel to the joist support member. The fixed reinforcement member is a third fixed reinforcement member to which one of the pair of first braces and one of the pair of second braces are respectively fixed via the brace fixing portion, and the other of the pair of first braces and the other of the pair of second braces are respectively fixed via the brace fixing portion, and a fourth fixed reinforcement member formed separately from the third fixed reinforcement member. The third fixed reinforcement member is fixed to one of two regions facing each other across the intersecting portion via the ceiling material fixing portion, and the fourth fixed reinforcement member is fixed to one region of the two regions facing each other across the intersecting portion, different from the region to which the third fixed reinforcement member is fixed, via the ceiling material fixing portion. It is something. [Effects of the Invention]

[0020] The present invention has the following effects.

[0021] In claim 1, the ceiling material can be prevented from falling off. Also, the fixing reinforcement member secures the braces, the ceiling material, and the soffit support part. Materials In addition, the fixing reinforcement members can secure the braces, ceiling materials, and joist joints. Materials It can be fixed. Furthermore, one member and a pair of braces can be fixed together, and the first and second fixed reinforcing members can be fixed to the ceiling material in a balanced manner.

[0024] Claim 2 In this case, contact between the fixed reinforcing member and the hanging member can be suppressed.

[0025] In claim 3, By fixing the first fixing reinforcing member and the second fixing reinforcing member to each other, the pair of first braces and the pair of second braces can be fixed to each other.

[0026] In claim 4, It is possible to prevent the ceiling material from falling off. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, it is possible to fix one member, a first brace, and a second brace together. Furthermore, it is possible to simplify construction.

[0027] In claim 5, By fixing the third fixing reinforcing member and the fourth fixing reinforcing member to each other, the pair of first braces and the pair of second braces can be fixed to each other.

[0028] In claim 6, The ceiling material can be prevented from falling off. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, one member and a pair of braces can be fixed together. Furthermore, the first fixing reinforcement member and the second fixing reinforcement member can be fixed to the ceiling material in a balanced manner.

[0029] In claim 7, It is possible to prevent the ceiling material from falling off. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, the fixing reinforcement member can fix multiple braces, ceiling material, and joist support members. Furthermore, it is possible to fix one member, the first brace, and the second brace together. Furthermore, it is possible to simplify construction. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic perspective view showing a reinforcing metal fitting and a ceiling structure according to a first embodiment of the present invention. [Figure 2] FIG. [Figure 3](a) A front view of the first reinforcing metal fitting, (b) a right side view of the same. [Figure 4] FIG. [Figure 5] (a) Right side view of the second reinforcing metal fitting. (b) Front view of the same. [Figure 6] An exploded oblique view showing a sill support, a sill joint member, a first reinforcing metal fitting, and a second reinforcing metal fitting. [Figure 7] FIG. 10 is a perspective view showing the first reinforcing metal fitting attached to the soffit support. [Figure 8] An oblique view showing the second reinforcing fitting attached to the sill support member. [Figure 9] 1 is a schematic plan view showing the partitioned areas of the ceiling surface material and the ceiling material fixing portion. FIG. [Figure 10] FIG. [Figure 11] Also, front view. [Figure 12] Also, right side view. [Figure 13] FIG. 10 is a perspective view showing a reinforcing metal fitting and a ceiling structure according to a second embodiment of the present invention. [Figure 14] FIG. 10 is a perspective view showing a third reinforcing metal fitting. [Figure 15] (a) Front view of the third reinforcing metal fitting. (b) Right side view of the same. [Figure 16] FIG. 10 is a perspective view showing a fourth reinforcing metal fitting. [Figure 17] (a) Right side view of the fourth reinforcing metal fitting. (b) Front view of the same. [Figure 18] FIG. 10 is a perspective view showing the state in which the third reinforcing metal fitting is attached to the soffit support. [Figure 19] An oblique view showing the fourth reinforcing fitting attached to the sill support member. [Figure 20] FIG. 10 is a front view showing a reinforcing metal fitting and a ceiling structure according to a second embodiment. [Figure 21] Also, right side view. [Figure 22] FIG. 10 is a perspective view showing a modified example of the reinforcing metal fitting. [Figure 23]FIG. 10 is a perspective view showing a reinforcing metal fitting and a ceiling structure according to a third embodiment of the present invention. [Figure 24] (a) A perspective view of the fifth reinforcing metal fitting, (b) A front view of the same, (c) A right side view of the same, and (d) A cross-sectional view of the same in the direction of the arrow AA. [Figure 25] (a) A perspective view of the sixth reinforcing metal fitting, (b) A front view of the same, and (c) A right side view of the same. [Figure 26] (a) A perspective view of the seventh reinforcing metal fitting, (b) A front view of the same, and (c) A right side view of the front seventh reinforcing metal fitting. [Figure 27] An exploded oblique view showing the sill support, sill support member, fifth reinforcing bracket, sixth reinforcing bracket, seventh reinforcing bracket and eighth reinforcing bracket. [Figure 28] FIG. 10 is a front view showing a reinforcing metal fitting and a ceiling structure according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0033] In the following description, the up-down direction, left-right direction, and front-rear direction are defined according to the arrows shown in the drawings.

[0034] A ceiling structure 1 according to the first embodiment will be described below with reference to FIG.

[0035] The ceiling structure 1 is a ceiling structure in building H. For convenience, FIG. 1 shows only a portion of the entire ceiling structure in building H. Below, the ceiling structure 1 shown in FIG. 1, i.e., a portion of the entire ceiling structure, will be described. The ceiling structure 1 comprises hanging bolts 10, hangers 20, joist supports 30, joist joint members 40, joists 50, ceiling surface materials 60, joist support braces 70, joist joint braces 80, and reinforcing fittings 100.

[0036] The suspension bolt 10 is suspended from the skeleton A of the building H. The suspension bolt 10 is attached to an insert (not shown) provided in the skeleton A. A plurality of suspension bolts 10 are provided. Three suspension bolts 10 are shown in FIG. 1.

[0037] The hanger 20 supports the siding support 30, which will be described later. The hanger 20 is attached to the lower end of each hanging bolt 10. The hanger 20 is formed in a roughly J-shape when viewed from the side, so that the siding support 30, which will be described later, can be hooked onto it (see FIG. 7). The hanger 20 is formed by appropriately bending a strip-shaped metal member.

[0038] The siding support 30 supports the siding 50, which will be described later. The siding support 30 is formed in an elongated shape and is arranged with its longitudinal direction facing the left-right direction. The siding support 30 is supported by the hanger 20 by being hooked onto the hanger 20. In this state, most of the hanger 20 is positioned in front of the siding support 30 (see Figure 7). In this way, the siding support 30 is suspended from the frame A of the building H via the hanger 20 and the hanging bolt 10. Multiple siding support 30 are provided. Three siding support 30 are shown in Figure 1.

[0039] The siding support member 40 is a long member. The siding support member 40 is arranged above a plurality of (three in this embodiment) siding support members 30, with its longitudinal direction perpendicular to the longitudinal direction of the siding support members 30. The siding support member 40 is arranged to span the three siding support members 30 and is fixed to these siding support members 30.

[0040] The siding 50 supports the ceiling surface material 60, which will be described later. The siding 50 is formed in an elongated shape and is arranged with its longitudinal direction facing the front-to-rear direction. The siding 50 is supported by the siding support 30 using clip members 51. A plurality of sidings 50 are provided. Two sidings 50 are shown in FIG. 1.

[0041] The ceiling surface material 60 constitutes the ceiling surface. The ceiling surface material 60 is formed, for example, from a plate-shaped gypsum board. The ceiling surface material 60 is placed with the plate surface facing up and down. The ceiling surface material 60 is fixed to the underside of the rough joist 50 using screws.

[0042] The siding support brace 70 is installed between the frame A of the building H and the siding support 30. The siding support brace 70 is formed in an elongated shape and is arranged with its longitudinal direction tilted relative to the vertical direction. The upper end of the siding support brace 70 is fixed to the frame A of the building H. The lower end of the siding support brace 70 is fixed to the siding support 30 side by bolts B. Specifically, the lower end of the siding support brace 70 is fixed to a first reinforcing bracket 110 (described later) fixed to the siding support 30 (see FIG. 11). The siding support brace 70 is formed in a substantially C-shape when viewed in longitudinal cross section. In this embodiment, the siding support brace 70 is arranged so that the front side is open and the rear side is closed. A pair of siding support braces 70 is installed side by side on the left and right.

[0043] The pair of siding support braces 70 are formed symmetrically in the left-right direction. More specifically, of the pair of siding support braces 70, the siding support brace 70 located on the left side (hereinafter sometimes referred to as the "left siding support brace 70L") is positioned so that its upper side is located to the left and its lower side is located to the right. Furthermore, of the pair of siding support braces 70, the siding support brace 70 located on the right side (hereinafter sometimes referred to as the "right siding support brace 70R") is positioned so that its upper side is located to the right and its lower side is located to the left. The left siding support brace 70L and the right siding support brace 70R are formed symmetrically around the hanging bolt 10 when viewed from the front. The left siding support brace 70L and the right siding support brace 70R are positioned so that they approach each other as they go toward their respective lower ends.

[0044] The siding joint brace 80 is installed between the frame A of the building H and the siding joint member 40. The shape of the siding joint brace 80 is the same as the siding support brace 70. The upper end of the siding joint brace 80 is fixed to the frame A of the building H. The lower end of the siding joint brace 80 is fixed to the siding joint member 40 by a bolt B. Specifically, the siding joint brace 80 is fixed to a second reinforcing bracket 120 (described later) that is fixed to the siding joint member 40 (see Figure 12). A pair of siding joint braces 80 are installed side by side, front to back.

[0045] The pair of soffit joint braces 80 are formed symmetrically in the front-to-rear direction. More specifically, of the pair of soffit joint braces 80, the soffit joint brace 80 located on the front side (hereinafter sometimes referred to as the "front soffit joint brace 80F") is arranged so that its upper side is located forward and its lower side is located rearward. Furthermore, of the pair of soffit joint braces 80, the soffit joint brace 80 located on the rear side (hereinafter sometimes referred to as the "rear soffit joint brace 80B") is arranged so that its upper side is located rearward and its lower side is located forward. The front soffit joint brace 80F and the rear soffit joint brace 80B are formed symmetrically around the suspension bolt 10 when viewed from the right side. The front soffit joint brace 80F and the rear soffit joint brace 80B are arranged so that they approach each other as they go toward their respective lower ends.

[0046] As described above, the ceiling structure 1 according to this embodiment is provided with two types of braces: a pair of soffit support braces 70 fixed to the soffit support 30 side, and a pair of soffit joint braces 80 fixed to the soffit joint member 40 side. The pair of soffit support braces 70 and the pair of soffit joint braces 80 are arranged so as to intersect in a plan view (a cross shape in a plan view). The pair of soffit support braces 70 and the pair of soffit joint braces 80 are arranged in directions (left-right and front-back directions) that are perpendicular to each other in a plan view, and are arranged so as to approach each other as they go toward their respective lower ends.

[0047] The configuration of the reinforcing metal fitting 100 will be described in detail below with reference to FIGS.

[0048] As will be described later, the reinforcing metal fittings 100 are components that are fixed to a pair of siding support braces 70, a pair of siding joint braces 80, a siding support 30, a siding joint member 40, and a ceiling surface material 60. The reinforcing metal fittings 100 include a first reinforcing metal fitting 110 and a second reinforcing metal fitting 120.

[0049] The first reinforcing bracket 110 shown in Figures 1 to 3 is a component that is fixed to a pair of siding support braces 70, a siding support 30, and a ceiling surface material 60. The first reinforcing bracket 110 is formed in a shape that is long from side to side. The first reinforcing bracket 110 is formed by appropriately bending a single flat metal member. The first reinforcing bracket 110 has a siding support fixing portion 111, a siding support hook portion 112, a siding support brace fixing portion 113, a notch portion 114, and a ceiling material fixing portion 115.

[0050] The siding support fixing portion 111 is the portion to which the siding support 30 is fixed. The siding support fixing portion 111 is formed with the board surface facing in the front-to-rear direction. The siding support fixing portion 111 is formed in a generally rectangular shape that is elongated from side to side when viewed from the front. The siding support fixing portion 111 is divided into left and right halves by a notch 114 described below. Note that, below, the portion of the siding support fixing portion 111 divided on the right side may be referred to as the "right siding support fixing portion 111R," and the portion divided on the left side may be referred to as the "left siding support fixing portion 111L." Note that, although not shown, the siding support fixing portion 111 has appropriate pilot holes formed therein through which the screws S1 used to fix the siding support 30 are inserted.

[0051] The siding support hook portion 112 is a portion that is hooked onto the upper end of the siding support 30. Note that "hooked onto the upper end of the siding support 30" also includes the case where it is temporarily placed on the upper end of the siding support 30 (placed during the installation work). The siding support hook portion 112 is formed with the board surface facing in the vertical direction. The siding support hook portion 112 is formed so as to protrude rearward from the upper end of the siding support fixing portion 111. The front end of the siding support hook portion 112 is connected to the upper end of the siding support fixing portion 111. The siding support hook portion 112 is divided into left and right halves by a cutout portion 114, which will be described later.

[0052] The soffit support brace fixing portion 113 is the portion where the soffit support brace 70 is fixed. The soffit support brace fixing portion 113 is formed with the board surface facing in the front-to-back direction. When viewed from the front, the soffit support brace fixing portion 113 is formed in a roughly rectangular shape that is long in the left-to-right direction. The soffit support brace fixing portion 113 is formed to protrude upward from the rear end of the soffit support hook portion 112. The lower end of the soffit support brace fixing portion 113 is connected to the rear end of the soffit support hook portion 112. The soffit support brace fixing portion 113 is cut out from the lower end at the left-to-right center to the middle in the up-down direction by a cutout portion 114 described below.

[0053] The cutout portion 114 is a portion formed by cutting out the soffit support fixing portion 111, the soffit support hook portion 112, and the soffit support brace fixing portion 113. The cutout portion 114 is formed to extend from the lower end portion in the left-right center of the soffit support fixing portion 111 to the middle portion in the up-down direction in the left-right center of the soffit support brace fixing portion 113. The cutout portion 114 comprises a first cutout portion 114a, a second cutout portion 114b, and a third cutout portion 114c.

[0054] The first cutout 114a is a portion formed in the soffit support brace fixing portion 113. The first cutout 114a is formed so as to extend from the lower end at the left-right center of the soffit support brace fixing portion 113 to the middle in the up-down direction. When viewed from the front, the first cutout 114a is formed in a substantially rectangular shape large enough to insert and receive the soffit support member 40. Specifically, when viewed from the front, the size (left-right width and up-down width) of the first cutout 114a is formed to be larger than the soffit support member 40 when viewed from the front (see FIG. 11).

[0055] The second cutout 114b is a portion formed in the siding support hook 112. The second cutout 114b is formed over the entire siding support hook 112 in the front-to-rear direction. The second cutout 114b is formed in a shape (approximately trapezoidal in plan view) that gradually slopes to the right as the right side moves forward. In other words, the left-to-right width of the second cutout 114b is greater than the left-to-right width of the first cutout 114a.

[0056] The third cutout 114c is a portion formed in the soffit support fixing portion 111. The third cutout 114c is formed over the entire soffit support fixing portion 111 in the up-down direction. The upper portion of the third cutout 114c is formed to have the same width as the left-right width of the front end of the second cutout 114b. The left-right width is formed to correspond to the shape and dimensions of the hanger 20. Specifically, in a front view, the size (left-right width) of the upper portion of the third cutout 114c is formed to be larger than that of the hanger 20 (see FIG. 11). The lower portion of the third cutout 114c is formed in a shape that gradually slopes leftward as the right side goes downward (approximately an inverted trapezoid shape in a front view). The left-right width of the lower end of the third cutout 114c is formed to have the same width as the left-right width of the first cutout 114a.

[0057] By gradually sloping the right side of the second notch 114b as described above, the change in the left-right width (cross-sectional loss) between the first notch 114a and the upper part of the third notch 114c can be made gentler, thereby preventing stress concentration in a portion of each notch. Furthermore, by gradually sloping the right side of the lower part of the third notch 114c as described above, the left-right width of the lower end of the right soffit support fixing part 111R can be made relatively large. This allows for a relatively large width of the ceiling material fixing part 115, which is connected to the lower end of the right soffit support fixing part 111R and has the same width as the lower end, as described below. This in turn increases the area of the portion that can be fixed to the ceiling panel 60. Furthermore, by sloping the lower parts of the second notch 114b and the third notch 114c so that the left-right width gradually decreases in one direction, the area of the notch 114 can be made relatively small, thereby improving the strength of the first reinforcing bracket 110.

[0058] In the above example, the right side of second cutout 114b and the right side of the lower part of third cutout 114c are inclined, but the present invention is not limited to this. For example, both the left and right sides of the lower parts of second cutout 114b and third cutout 114c may be inclined, so that cutout 114 has a symmetrical shape.

[0059] The ceiling material fixing portion 115 is the portion to which the ceiling surface material 60 is fixed. The ceiling material fixing portion 115 is formed with the plate surface facing in the vertical direction. The ceiling material fixing portion 115 is provided on the right soffit support fixing portion 111R and the left soffit support fixing portion 111L, respectively. Hereinafter, the ceiling material fixing portion 115 provided on the right soffit support fixing portion 111R will be referred to as the "right ceiling material fixing portion 115R," and the ceiling material fixing portion 115 provided on the left soffit support fixing portion 111L will be referred to as the "left ceiling material fixing portion 115L." Although not shown in the figure, the ceiling material fixing portion 115 has appropriate pilot holes formed therein through which screws S2 used to fasten the ceiling surface material 60 are inserted.

[0060] The right-side ceiling material fixing portion 115R is a portion formed to extend forward from the right-side soffit support fixing portion 111R. The rear end of the right-side ceiling material fixing portion 115R is connected to the lower end of the right-side soffit support fixing portion 111R. The right-side ceiling material fixing portion 115R is formed in a substantially rectangular shape in a plan view. The left-right width of the right-side ceiling material fixing portion 115R is formed to be the same width as the left-right width of the lower end of the right-side soffit support fixing portion 111R.

[0061] The left ceiling material fixing portion 115L is a portion formed to extend rearward from the left soffit support fixing portion 111L. The front end of the left ceiling material fixing portion 115L is connected to the lower end of the left soffit support fixing portion 111L. The left ceiling material fixing portion 115L is formed in the same shape as the right ceiling material fixing portion 115R. The left-right width of the left ceiling material fixing portion 115L is formed to be the same width as the left-right width of the left soffit support fixing portion 111L.

[0062] The second reinforcing bracket 120 shown in Figures 1, 4, and 5 is a component that is fixed to a pair of rafter joint braces 80, a rafter joint member 40, and a ceiling surface material 60. The second reinforcing bracket 120 is formed in a shape that is long from front to back. The second reinforcing bracket 120 is formed by appropriately bending a single flat metal member. The second reinforcing bracket 120 has a rafter joint fixing portion 121, a rafter joint hook portion 122, a rafter joint brace fixing portion 123, a notch portion 124, a ceiling material fixing portion 125, and a reinforcing bracket fixing portion 126.

[0063] The siding joint fixing portion 121 is the portion to which the siding joint member 40 is fixed. The siding joint fixing portion 121 is formed with the board surface facing left and right. When viewed from the right side, the siding joint fixing portion 121 is formed in a generally rectangular shape that is elongated from front to back. The siding joint fixing portion 121 is divided into front and rear portions by a notch 124, which will be described later. Note that, below, the front divided portion of the siding joint fixing portion 121 may be referred to as the "front siding joint fixing portion 121F," and the rear divided portion may be referred to as the "rear siding joint fixing portion 121B." Note that, although not shown, the siding joint fixing portion 121 has appropriate pilot holes formed therein through which the screws S1 used to fasten the siding joint member 40 are inserted.

[0064] The furring strip connecting hook portion 122 is the portion that is hooked onto the upper end of the furring strip connecting member 40. Note that "hooked onto the upper end of the furring strip connecting member 40" also includes the case where it is temporarily placed on the upper end of the furring strip connecting member 40 (placed during the installation work). The furring strip connecting hook portion 122 is formed with the board surface facing in the vertical direction. The furring strip connecting hook portion 122 is formed so as to protrude to the left from the upper end of the furring strip connecting fixing portion 121. The right end of the furring strip connecting hook portion 122 is connected to the upper end of the furring strip connecting fixing portion 121. The furring strip connecting hook portion 122 is divided into front and rear portions by a cutout portion 124, which will be described later.

[0065] The joist joint brace fixing portion 123 is the portion where the joist joint brace 80 is fixed. The joist joint brace fixing portion 123 is formed with the board surface facing in the left-right direction. When viewed from the right side, the joist joint brace fixing portion 123 is formed in a roughly rectangular shape that is long in the front-to-back direction. The joist joint brace fixing portion 123 is formed to protrude upward from the left end of the joist joint hook portion 122. The lower end of the joist joint brace fixing portion 123 is connected to the left end of the joist joint hook portion 122. The joist joint brace fixing portion 123 is cut out from the lower end at the front-to-back center to the middle in the up-down direction by a cutout portion 124 described below.

[0066] The cutout portion 124 is a portion formed by cutting out the rafter joint fixing portion 121, the rafter joint hook portion 122, and the rafter joint brace fixing portion 123. The cutout portion 124 is formed to extend from the lower end portion in the front-to-back center portion of the rafter joint fixing portion 121 to the middle portion in the up-down direction in the front-to-back center portion of the rafter joint brace fixing portion 123. The cutout portion 124 comprises a first cutout portion 124a, a second cutout portion 124b, and a third cutout portion 124c.

[0067] The first cutout 124a is a portion formed in the soffit support brace fixing portion 123. The first cutout 124a is formed so as to extend from the lower end at the front-to-rear center of the soffit support brace fixing portion 123 to the middle in the up-down direction. When viewed from the right side, the first cutout 124a is formed in a substantially rectangular shape large enough to receive the upper part of the first reinforcing bracket 110 (soffit support brace fixing portion 113) inserted therein. Specifically, the front-to-rear width of the first cutout 124a is formed to be larger than the thickness (front-to-rear width) of the soffit support brace fixing portion 113.

[0068] The second cutout 124b is a portion formed in the furring strip connecting hook portion 122. The second cutout 124b is formed over the entire furring strip connecting hook portion 122 in the front-to-rear direction. The front-to-rear width of the second cutout 124b is formed to be larger than the front-to-rear width of the first cutout 124a. The second cutout 124b is formed so that its width gradually increases from the front-to-rear width of the lower part of the first cutout 124a to the front-to-rear width of the upper part of the third cutout 124c. Specifically, the second cutout 124b is formed in a shape that gradually slopes forward as the front side moves to the right.

[0069] The third cutout 124c is a portion formed in the furring strip joining and fixing portion 121. The third cutout 124c is formed over the entire furring strip joining and fixing portion 121 in the vertical direction. The third cutout 124c is formed to correspond to the shape and dimensions of the hanger 20. Specifically, when viewed from the right side, the front-to-rear width of the third cutout 124c is formed to be larger than that of the hanger 20 (see FIG. 12). The front-to-rear width of the third cutout 124c is formed to be the same width as the front-to-rear width of the second cutout 124b.

[0070] As described above, by gradually inclining the front side of the second cutout portion 124b, the change in the front-to-rear width (cross-sectional loss) between the first cutout portion 124a and the third cutout portion 124c can be made gradual, and stress concentration in a part of each cutout portion can be suppressed.

[0071] The shape of the cutout 124 is not limited to the above example. For example, the front-to-rear width of the second cutout 124b may be the same as the front-to-rear width of the first cutout 124a, and the front-to-rear width of the upper half of the third cutout 124c may be gradually increased downward. In this case, for example, the front side of the upper half of the third cutout 124c may be gradually inclined, so that the shape is gradually inclined forward downward. Even when the front side of the upper half of the third cutout 124c is gradually inclined as described above, the change in the front-to-rear width (cross-sectional loss) of the first cutout 124a and the third cutout 124c can be made gradual, and stress concentration on a portion of each cutout can be suppressed.

[0072] The ceiling material fixing portion 125 is the portion to which the ceiling surface material 60 is fixed. The ceiling material fixing portion 125 is formed with the board surface facing in the vertical direction. The ceiling material fixing portion 125 is provided on the front soffit joint fixing portion 121F and the rear soffit joint fixing portion 121B, respectively. Hereinafter, the ceiling material fixing portion 125 provided on the front soffit joint fixing portion 121F will be referred to as the "front ceiling material fixing portion 125F," and the ceiling material fixing portion 125 provided on the rear soffit joint fixing portion 121B will be referred to as the "rear ceiling material fixing portion 125B." Although not shown in the figure, the ceiling material fixing portion 125 has appropriate pilot holes formed therein through which screws S2 used to fasten the ceiling surface material 60 are inserted.

[0073] The front ceiling material fixing portion 125F is formed to extend to the left from the front soffit joint fixing portion 121F. The right end of the front ceiling material fixing portion 125F is connected to the lower end of the front soffit joint fixing portion 121F. The front ceiling material fixing portion 125F is formed in a roughly rectangular shape in a plan view. The front-to-rear width of the front ceiling material fixing portion 125F is formed to be the same width as the front-to-rear width of the lower end of the front soffit joint fixing portion 121F.

[0074] The rear ceiling material fixing portion 125B is a portion formed to extend to the right from the rear soffit joint fixing portion 121B. The left end of the rear ceiling material fixing portion 125B is connected to the lower end of the rear soffit joint fixing portion 121B. The rear ceiling material fixing portion 125B is formed in approximately the same shape as the front ceiling material fixing portion 125F. The front-to-rear width of the rear ceiling material fixing portion 125B is formed to be the same width as the front-to-rear width of the rear soffit joint fixing portion 121B.

[0075] The reinforcing bracket fixing portion 126 is the portion that is fixed to the first reinforcing bracket 110. The reinforcing bracket fixing portion 126 is formed with its plate surface facing in the front-to-rear direction. Although not shown, the reinforcing bracket fixing portion 126 is formed with appropriate pilot holes through which screws S1 used to fix the first reinforcing bracket 110 are inserted. The reinforcing bracket fixing portion 126 comprises a first reinforcing bracket fixing portion 126a and a second reinforcing bracket fixing portion 126b.

[0076] The first reinforcing bracket fixing portion 126a is formed to protrude leftward from the front soffit joint fixing portion 121F. The right end of the first reinforcing bracket fixing portion 126a is connected to the lower part of the rear end of the front soffit joint fixing portion 121F. The first reinforcing bracket fixing portion 126a is formed in a substantially rectangular shape when viewed from the front.

[0077] The second reinforcing bracket fixing portion 126b is formed to protrude to the right from the rear soffit support fixing portion 121B. The left end of the second reinforcing bracket fixing portion 126b is connected to the upper part of the front end of the rear soffit support fixing portion 121B. The second reinforcing bracket fixing portion 126b is formed in a substantially rectangular shape when viewed from the front. The second reinforcing bracket fixing portion 126b is fixed to the soffit support brace fixing portion 113 of the first reinforcing bracket 110 (see Figure 8).

[0078] The following describes how the reinforcing metal fitting 100 is attached to the ceiling structure 1, using FIGS. 6 to 12.

[0079] First, the relative positions of the first reinforcing metal fitting 110 and the siding support 30 will be described.

[0080] As shown in Figures 6 and 7, the first reinforcing bracket 110 is positioned with its longitudinal direction aligned with the longitudinal direction (left-right direction) of the soffit support 30. Specifically, the soffit support fixing portion 111 of the first reinforcing bracket 110 is positioned in front of the soffit support 30, facing the soffit support 30 in the front-to-back direction. The soffit support fixing portion 111 contacts the front surface of the soffit support 30. Furthermore, the soffit support hook portion 112 of the first reinforcing bracket 110 is positioned above the soffit support 30, facing the soffit support 30 in the up-down direction. The soffit support hook portion 112 contacts the upper surface of the soffit support 30 from above. In this way, the soffit support hook portion 112 is hooked onto the upper end of the soffit support 30. Here, the left-side ceiling material fixing portion 115L and the right-side ceiling material fixing portion 115R of the first reinforcing bracket 110 have the same area. Therefore, even if the worker releases the first reinforcing bracket 110 while it is hooked onto the soffit support 30, the first reinforcing bracket 110 can remain hooked onto the soffit support 30.

[0081] The above-mentioned first reinforcing bracket 110 can be positioned by hooking the siding bracket hook portion 112 onto the upper end of the siding bracket 30 from above the siding bracket 30. This allows the first reinforcing bracket 110 to be fixed to the siding bracket 30, as described below, with the first reinforcing bracket 110 hooked onto the siding bracket 30.

[0082] Furthermore, the notch 114 of the first reinforcing bracket 110 is provided in a position corresponding to the hanger 20 that supports the soffit support 30. Specifically, the notch 114 is positioned so that at least a portion of the hanger 20 (in the illustrated example, the portion excluding the upper part of the hanger 20) is located inside the notch 114 (the second notch 114b and the third notch 114c) when viewed from the front. In this way, the suspension bolt 10 that suspends the hanger 20 is positioned in front of the soffit support brace fixing portion 113 of the first reinforcing bracket 110 so as not to come into contact with the first reinforcing bracket 110. Furthermore, clip members 51 supported by the soffit support 30 are positioned on the left and right sides of the first reinforcing bracket 110.

[0083] Next, the positional relationship between the second reinforcing metal fitting 120, the sill joint member 40, and the first reinforcing metal fitting 110 will be described.

[0084] As shown in Figures 6 and 8, the second reinforcing bracket 120 is arranged with its longitudinal direction aligned with the longitudinal direction (front-to-back direction) of the siding joint member 40. Specifically, the siding joint fixing portion 121 of the second reinforcing bracket 120 is arranged to the right of the siding joint member 40, in a position facing the siding joint member 40 in the left-right direction. The siding joint fixing portion 121 contacts the right surface of the siding joint member 40. In addition, the siding joint hook portion 122 of the second reinforcing bracket 120 is arranged above the siding joint member 40, in a position facing the siding joint member 40 in the up-down direction. The siding joint hook portion 122 contacts the upper surface of the siding joint member 40 from above. In this way, the siding joint hook portion 122 is hooked onto the upper end of the siding joint member 40. Here, the areas of the front ceiling material fixing portion 125F and the rear ceiling material fixing portion 125B of the second reinforcing bracket 120 are the same. Therefore, even if the worker releases the second reinforcing bracket 120 while it is hooked onto the furring edge joint member 40, the second reinforcing bracket 120 can remain hooked onto the furring edge joint member 40.

[0085] The above-mentioned second reinforcing metal fitting 120 can be positioned by hooking the reinforcing metal fitting hook 122 onto the upper end of the reinforcing metal fitting 40 from above the reinforcing metal fitting 40. This allows the second reinforcing metal fitting 120 to be fixed to the reinforcing metal fitting 40 (described later) while the second reinforcing metal fitting 120 is hooked onto the reinforcing metal fitting 40.

[0086] Furthermore, the notch 124 of the second reinforcing bracket 120 is provided at a position corresponding to the hanger 20. Specifically, the notch 124 is positioned so that the hanger 20 is located inside the notch 124 when viewed from the right side. Furthermore, the suspension bolt 10 that suspends the hanger 20 is positioned to the right of the joist joint brace fixing portion 123 of the second reinforcing bracket 120 so as not to come into contact with the second reinforcing bracket 120.

[0087] Furthermore, the second reinforcing bracket 120 is positioned above the first reinforcing bracket 110 so as to straddle the first reinforcing bracket 110. Specifically, the second reinforcing bracket 120 is positioned so that the siding support brace fixing portion 113 of the first reinforcing bracket 110 is inserted into and receives the cutout portion 124. In this state, the upper portion of the second reinforcing bracket 120 (the portion above the cutout portion 124) is positioned above the first reinforcing bracket 110. Thus, the second reinforcing bracket 120 is positioned so as to intersect (orthogonally intersect) with the first reinforcing bracket 110 in a plan view. Furthermore, in this state, the ceiling material fixing portion 125 of the second reinforcing bracket 120 is positioned at the same height as the ceiling material fixing portion 115 of the first reinforcing bracket 110.

[0088] The first reinforcing bracket fixing portion 126a of the second reinforcing bracket 120 is disposed in front of the soffit support fixing portion 111 of the first reinforcing bracket 110, at a position facing the notch 114 (third notch 114c) in the front-to-rear direction. In addition, the second reinforcing bracket fixing portion 126b of the second reinforcing bracket 120 is disposed behind the soffit support brace fixing portion 113 of the first reinforcing bracket 110, at a position facing the soffit support brace fixing portion 113 in the front-to-rear direction.

[0089] Next, the relative positions of the first reinforcing bracket 110 and the pair of siding support braces 70 and the relative positions of the second reinforcing bracket 120 and the pair of siding support braces 80 will be described.

[0090] 10 and 11, the siding support brace fixing portion 113 of the first reinforcing bracket 110 is positioned approximately rearward of the pair of siding support braces 70. Specifically, the siding support brace fixing portion 113 is positioned rearward of the lower ends of the pair of siding support braces 70, facing the lower ends of the pair of siding support braces 70 in the front-to-rear direction. The siding support brace fixing portion 113 is provided so as to span between the pair of siding support braces 70 in a front view. The siding support brace fixing portion 113 comes into contact with the rear surfaces of the lower ends of the pair of siding support braces 70.

[0091] 10 and 12, the siding joint brace fixing portion 123 of the second reinforcing bracket 120 is positioned approximately to the left of the pair of siding joint braces 80. Specifically, the siding joint brace fixing portion 123 is positioned to the left of the lower ends of the pair of siding joint braces 80, facing the lower ends of the pair of siding support braces 70 in the left-right direction. The siding joint brace fixing portion 123 is provided so as to span between the pair of siding joint braces 80 when viewed from the right side. The siding joint brace fixing portion 123 comes into contact with the left surfaces of the lower ends of the pair of siding joint braces 80.

[0092] Next, the positional relationship between the first reinforcing metal fitting 110, the second reinforcing metal fitting 120, and the ceiling surface material 60 will be described.

[0093] As shown in Figures 8, 9, and 11, the first reinforcing bracket 110 is disposed above the ceiling surface material 60. Specifically, the ceiling material fixing portions 115 (right-side ceiling material fixing portion 115R and left-side ceiling material fixing portion 115L) of the first reinforcing bracket 110 are disposed above the ceiling surface material 60, in positions facing the ceiling surface material 60 in the vertical direction. The right-side ceiling material fixing portion 115R and left-side ceiling material fixing portion 115L are disposed so as to be located on the same horizontal plane as the underside of the joist 50. In this way, the right-side ceiling material fixing portion 115R and left-side ceiling material fixing portion 115L come into contact with the upper surface of the ceiling surface material 60. More specifically, as shown in Figures 8 and 9, the right-side ceiling material fixing portion 115R comes into contact with the upper surface of the right front region of the four regions (hereinafter referred to as "divided regions") of the ceiling surface material 60 defined by the intersection of the joist support 30 and the joist joint member 40 in a plan view. Furthermore, the left ceiling material fixing portion 115L comes into contact with the upper surface of the left rear region of the partitioned region of the ceiling surface material 60.

[0094] As shown in Figures 8, 9, and 12, the second reinforcing bracket 120 is also arranged above the ceiling surface material 60, similar to the first reinforcing bracket 110. Specifically, the ceiling material fixing portions 125 (front ceiling material fixing portion 125F and rear ceiling material fixing portion 125B) of the second reinforcing bracket 120 are arranged above the ceiling surface material 60, facing the ceiling surface material 60 in the up-down direction. The front ceiling material fixing portion 125F and the rear ceiling material fixing portion 125B are arranged so as to be located on the same horizontal plane as the ceiling material fixing portion 115 of the first reinforcing bracket 110 and the underside of the joist 50. In this way, the front ceiling material fixing portion 125F and the rear ceiling material fixing portion 125B come into contact with the upper surface of the ceiling surface material 60. More specifically, as shown in Figures 8 and 9, the front ceiling material fixing portion 125F comes into contact with the upper surface of the front left region of the partitioned region of the ceiling surface material 60. Moreover, the rear ceiling material fixing portion 125B comes into contact with the upper surface of the right rear area of the partitioned area of the ceiling surface material 60.

[0095] The reinforcing fittings 100 arranged as described above are fixed to the soffit support brace 70, soffit joint brace 80, soffit support 30, soffit joint member 40 and ceiling surface material 60 using screws, bolts, etc. (fixing means).

[0096] First, the manner in which the first reinforcing metal fitting 110, the second reinforcing metal fitting 120, the siding support 30, and the siding support member 40 are fixed together will be described below.

[0097] 10 and 11, the soffit holder fixing portion 111 of the first reinforcing bracket 110 (the portion arranged to overlap the soffit holder 30 in a front view) is fixed to the soffit holder 30 using multiple (six in this embodiment) screws (hereinafter referred to as "screws S1"). The multiple screws S1 are inserted from the front to the rear (horizontally).

[0098] 10 and 12, the siding joint fixing portion 121 of the second reinforcing metal fitting 120 (the portion arranged to overlap the siding joint member 40 when viewed from the right side) is fixed to the siding joint member 40 using multiple (six in this embodiment) screws S1. The multiple screws S1 are inserted from right to left (horizontally).

[0099] 10, the first reinforcing bracket fixing portion 126a of the second reinforcing bracket 120 is fixed to the soffit support brace fixing portion 111 of the first reinforcing bracket 110 using multiple (three in this embodiment) screws S1. The second reinforcing bracket fixing portion 126b of the second reinforcing bracket 120 is fixed to the soffit support brace fixing portion 113 of the first reinforcing bracket 110 using multiple (two in this embodiment) screws S1. The multiple screws S1 are inserted from the rear to the front (horizontally).

[0100] Next, the manner in which the first reinforcing bracket 110 is fixed to the pair of siding support braces 70 and the manner in which the second reinforcing bracket 120 is fixed to the pair of siding support braces 80 will be described.

[0101] 10 and 11, the siding support brace fixing portion 113 of the first reinforcing bracket 110 is fixed to the lower ends of the pair of siding support braces 70 using multiple (two in this embodiment) bolts (hereinafter referred to as "bolts B"). The multiple bolts B are inserted from front to rear (laterally).

[0102] 10 and 12, the joist joint brace fixing portion 123 of the second reinforcing bracket 120 is fixed to the lower ends of the pair of joist joint braces 80 using a plurality of (two in this embodiment) bolts B. The plurality of bolts B are inserted from right to left (horizontally).

[0103] Next, the manner in which the first reinforcing metal fitting 110, the second reinforcing metal fitting 120, and the ceiling surface material 60 are fixed together will be described.

[0104] As shown in Figures 10 and 12, the right ceiling material fixing portion 115R of the first reinforcing bracket 110 is fixed to the right front region of the partitioned area of the ceiling surface material 60 using a plurality of screws (hereinafter referred to as "screws S2"). Similarly to the right ceiling material fixing portion 115R, the left ceiling material fixing portion 115L of the first reinforcing bracket 110 is also fixed to the right front region of the partitioned area of the ceiling surface material 60 using a plurality of screws S2. The plurality of screws S2 are inserted from below to above. The plurality of screws S2 are arranged at appropriate intervals from one another in the front-to-back and left-to-right directions.

[0105] As shown in Figures 10 and 11, the front ceiling material fixing portion 125F of the second reinforcing bracket 120 is fixed to the front left region of the partitioned area of the ceiling surface material 60 using multiple screws S2. Also, as shown in Figures 10 and 12, the rear ceiling material fixing portion 125B of the second reinforcing bracket 120, like the front ceiling material fixing portion 125F, is also fixed to the rear right region of the partitioned area of the ceiling surface material 60 using multiple screws S2. The multiple screws S2 are inserted from below to above. The multiple screws S2 are arranged at appropriate intervals from one another in the front-to-back and left-to-right directions.

[0106] The following describes the function and effect of the reinforcing metal fitting 100 in the ceiling structure 1.

[0107] The reinforcing bracket 100 described above can secure a pair of siding support braces 70, a pair of siding joint braces 80, a siding support 30, a siding joint member 40, and a ceiling surface material 60. As a result, if the ceiling surface material 60 sways horizontally during an earthquake, for example, the horizontal force generated in the ceiling surface material 60 can be effectively transmitted by the reinforcing bracket 100 to the siding support 30 and the siding joint member 40, and ultimately to the pair of siding support braces 70 and the siding joint member 40. In this way, the ceiling structure 1 can displace the various components constituting the ceiling structure 1 as a whole, suppressing the amount of displacement and preventing the ceiling surface material 60 from falling off due to, for example, collisions of the various components with the walls of the building H. Furthermore, because the reinforcing bracket 100 is screwed to both the siding support 30 and the siding joint member 40 and secured together, damage to the various components can be effectively suppressed.

[0108] Furthermore, the pair of soffit support braces 70 and the pair of soffit joint braces 80 are fixed to the ceiling surface material 60 not only via the soffit joint members 40, the soffit support 30, and the soffit 50, but also via the soffit support 30 and the reinforcing bracket 100 (ceiling material fixing portion 115 and ceiling material fixing portion 125). In this way, it is possible to prevent stress from concentrating between the pair of soffit support braces 70 and the pair of soffit joint braces 80 and the ceiling surface material 60. In this way, it is possible to prevent deformation of the various components (for example, the soffit support 30) due to stress concentration, and to prevent the ceiling surface material 60 from falling off due to this deformation.

[0109] Furthermore, in this embodiment, the ceiling material fixing portions 115 (right-side ceiling material fixing portion 115R and left-side ceiling material fixing portion 115L) and the ceiling material fixing portions 125 (front-side ceiling material fixing portion 125F and rear-side ceiling material fixing portion 125B) of the reinforcing bracket 100 can be fixed to each of the partitioned areas of the ceiling surface material 60. This allows the ceiling surface material 60 to be fixed in a balanced manner over a wide area, thereby increasing the surface rigidity of the ceiling surface material 60.

[0110] In addition, in this embodiment, the first reinforcing bracket 110 and the second reinforcing bracket 120 are separate components, which makes it easier to attach each component to the siding support 30 and the siding support member 40.

[0111] In addition, in this embodiment, by fixing the first reinforcing bracket 110 and the second reinforcing bracket 120 to each other via the reinforcing bracket fixing portion 126 of the second reinforcing bracket 120, a pair of furring strip support braces 70 and a pair of furring strip support braces 80 can be fixed to each other, thereby increasing the out-of-plane rigidity of each reinforcing bracket.

[0112] As described above, in the reinforcing member (reinforcing metal fitting 100) according to this embodiment, A fixed reinforcement member (reinforcement metal fitting 100) is installed between the skeleton A of the building H and the support member (furring support 30, furring support joint member 40) that supports the furring 50 of the building H, and a plurality of braces (furring support brace 70, furring support joint brace 80) arranged in a cross shape in a plan view are fixed, Ceiling material fixing portions 115, 125 to which the ceiling material (ceiling surface material 60) supported by the joist 50 is fixed; The support members (furring strip support 30, furring strip support member 40) are fixed to the support member fixing portions (furring strip support fixing portion 111, furring strip support fixing portion 121), Brace fixing portions (furring edge support brace fixing portions 113, furring edge joint brace fixing portions 123) to which the ends of the plurality of braces (furring edge support brace 70, furring edge joint brace 80) are fixed; It is equipped with the following.

[0113] In addition, in the ceiling structure 1 according to this embodiment, A joist 50 supporting the ceiling material (ceiling surface material 60) of the building H; A support member for supporting the siding 50; A plurality of braces (rafter support braces 70, rafter joint braces 80) are installed between the skeleton A of the building H and the support member and arranged in a cross shape in a plan view; A fixed reinforcing member (reinforcing bracket 100) having ceiling material fixing portions 115, 125 to which the ceiling material (ceiling surface material 60) is fixed, support member fixing portions (rafter support fixing portion 111, rafter joint fixing portion 121) to which the support member is fixed, and brace fixing portions to which the ends of the plurality of braces (rafter support brace 70, rafter joint brace 80) are fixed, It is equipped with the following.

[0114] This configuration prevents the ceiling material (ceiling surface material 60) from falling off. Specifically, the fixing reinforcement members (reinforcement brackets 100) can secure multiple braces (rafter support braces 70, rafter joint braces 80) arranged in a cross shape in a plan view, the ceiling material (ceiling surface material 60), and the support members. This prevents stress concentration between the multiple braces (rafter support braces 70, rafter joint braces 80) and the ceiling material (ceiling surface material 60) from deforming each member (e.g., the rafter support member (rafter support 30) among the support members), and prevents the ceiling material (ceiling surface material 60) from falling off due to such deformation. Furthermore, if the ceiling material (ceiling surface material 60) sways horizontally during an earthquake, for example, the fixing reinforcement members can effectively transmit the horizontal force generated in the ceiling material (ceiling surface material 60) to the multiple braces (rafter support braces 70, rafter joint braces 80) and the support members. This allows each component that makes up the ceiling structure 1 to be displaced as a unit, suppressing the amount of displacement and preventing the ceiling material (ceiling surface material 60) from falling off due to, for example, various components colliding with the wall of the building H.

[0115] The support member is The sill 50 includes a sill support member (sill support 30) to which the sill 50 is fixed, The support member fixing portion is It is provided with a soffit support fixing portion 111 to which the soffit support member (soffit support 30) is fixed.

[0116] With this configuration, the fixing reinforcement member (reinforcement bracket 100) can secure multiple braces (rafter support braces 70, rafter joint braces 80), the ceiling material (ceiling surface material 60), and the rafter support member (rafter support 30). This allows the components that make up the ceiling structure 1, including the rafter support member (rafter support 30), to be displaced together, preventing the ceiling material (ceiling surface material 60) from falling off.

[0117] The support member is The siding 50 includes a siding support member 40 fixed to the siding support member (siding support 30) so as to intersect in a plan view, The support member fixing portion is It is provided with a furring strip joint fixing portion 121 to which the furring strip joint member 40 is fixed.

[0118] With this configuration, the fixing reinforcement member (reinforcement bracket 100) can fix multiple braces (rafter support braces 70, rafter joint braces 80), the ceiling material (ceiling surface material 60), and the rafter joint member 40. This allows the components that make up the ceiling structure 1, including the rafter joint member 40, to be displaced together, preventing the ceiling material (ceiling surface material 60) from falling off.

[0119] In addition, the support member fixing portion (furring strip receiving fixing portion 111, furring strip joining fixing portion 121) is, The support member has a notch 114 cut out at a position corresponding to a hanging member (hanger 20) for hanging the support member from the body A.

[0120] This configuration can prevent contact between the fixed reinforcement member (reinforcement bracket 100) and the hanging member (hanger 20). In other words, even if the ceiling material (ceiling surface material 60) sways horizontally during an earthquake and the horizontal force generated in the ceiling material (ceiling surface material 60) is transmitted to the fixed reinforcement member (reinforcement bracket 100), contact between the fixed reinforcement member (reinforcement bracket 100) and the hanging member (hanger 20) can be prevented. In this way, deformation of the hanging member (hanger 20) can be prevented, and the ceiling material (ceiling surface material 60) can be prevented from falling off due to the deformation.

[0121] The support member is The siding 50 is fixed to a siding support member (siding support 30), and the siding support member (siding support 30) is fixed to the siding support member (siding support 30) so as to intersect in a plan view. The fixed reinforcing member (reinforcing metal fitting 100) is Among the plurality of braces (furring strip support braces 70, furring strip joint braces 80), a pair of first braces (furring strip support braces 70) provided on the furring strip support member (furring strip support 30) side are fixed via the brace fixing portion (furring strip support brace fixing portion 113) to first fixing reinforcement members (first reinforcing brackets 110), Among the plurality of braces (rafter support braces 70, rafter joint braces 80), a pair of second braces (rafter joint braces 80) provided on the rafter joint member 40 side are fixed via the brace fixing portion (rafter joint brace fixing portion 123), and a second fixing reinforcement member (second reinforcing bracket 120) formed separately from the first fixing reinforcement member (first reinforcing bracket 110); It is composed of the following.

[0122] This configuration allows one component and a pair of braces to be fixed together. That is, a pair of first braces (furring siding support braces 70) provided on the furring siding support component (furring siding support 30) side can be fixed together with a first fixed reinforcement component (first reinforcing bracket 110). Also, a pair of second braces (furring siding support braces 80) provided on the furring siding support component 40 side can be fixed together with a second fixed reinforcement component (second reinforcing bracket 120). Furthermore, by providing the first fixing reinforcing member (first reinforcing metal fitting 110) and the second fixing reinforcing member (second reinforcing metal fitting 120) as separate members, it is possible to easily attach these members to the support member.

[0123] In addition, at least one of the first fixing reinforcing member (first reinforcing metal fitting 110) and the second fixing reinforcing member (second reinforcing metal fitting 120) is It has a first fixing portion (reinforcing bracket fixing portion 126) that is fixed to the other of the first fixing reinforcement member (first reinforcing bracket 110) and the second fixing reinforcement member (second reinforcing bracket 120).

[0124] With this configuration, by fixing the first fixed reinforcement member (first reinforcement bracket 110) and the second fixed reinforcement member (second reinforcement bracket 120) to each other, a pair of first braces (rafter support braces 70) and a pair of second braces (rafter joint braces 80) can be fixed to each other.

[0125] The first fixed reinforcing member (first reinforcing metal fitting 110) is In a plan view, the ceiling material (ceiling surface material 60) is partitioned by the intersection of the siding support member (siding support 30) and the siding support member 40. The ceiling material is fixed to two of the four areas (partitioned areas) of the ceiling material (ceiling surface material 60) via the ceiling material fixing portion 115. The second fixed reinforcing member (second reinforcing metal fitting 120) is Of the four areas (partitioned areas), it is fixed via the ceiling material fixing portion 125 to two areas different from the area where the first fixing reinforcement member (first reinforcing bracket 110) is fixed.

[0126] With this configuration, the first fixing reinforcement member (first reinforcing bracket 110) and the second fixing reinforcement member (second reinforcing bracket 120) can be fixed to the ceiling material (ceiling surface material 60) in a balanced manner. In other words, by fixing the first fixing reinforcement member (first reinforcing bracket 110) and the second fixing reinforcement member (second reinforcing bracket 120) to four areas of the ceiling material (ceiling surface material 60) partitioned by the joist support members (joist support members 30) and the joist joint members 40 in a plan view, the first fixing reinforcement member (first reinforcing bracket 110) and the second fixing reinforcement member (second reinforcing bracket 120) can be fixed to the ceiling material (ceiling surface material 60) in a balanced manner over a wide area, thereby increasing the surface rigidity of the ceiling material (ceiling surface material 60).

[0127] The reinforcing metal fitting 100 is one embodiment of a reinforcing member. The first reinforcing metal fitting 110 is one embodiment of a first fixed reinforcing member. The second reinforcing metal fitting 120 is an embodiment of a second fixed reinforcing member. Moreover, the joist support brace fixing portion 113 is one embodiment of a brace fixing portion. Moreover, the joist joint brace fixing portion 123 is one embodiment of the brace fixing portion. The reinforcing metal fitting fixing portion 126 is an embodiment of a first fixing portion. Furthermore, the sill support 30 and the sill support member 40 are one embodiment of the support member. The siding support 30 is one embodiment of a siding support member. The hanger 20 is an embodiment of a hanging member. The joist support brace 70 is an embodiment of the first brace. The joist joint brace 80 is an embodiment of the second brace.

[0128] Although the first embodiment has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0129] For example, in this embodiment, an example has been shown in which the second reinforcing bracket 120 is positioned above the first reinforcing bracket 110, but this is not limited to this, and the first reinforcing bracket 110 may also be positioned above the second reinforcing bracket 120. In this case, the second reinforcing bracket 120 (rough joist joint brace fixing portion 123) is inserted into and accepted by the cutout portion 114 of the first reinforcing bracket 110. Also, in this case, the shape of the first reinforcing bracket 110 is appropriately modified so that the ceiling material fixing portion 115 of the first reinforcing bracket 110 and the ceiling material fixing portion 125 of the second reinforcing bracket 120 are positioned at the same height.

[0130] Furthermore, for example, the shapes of the first reinforcing bracket 110 and the second reinforcing bracket 120 may be identical to each other except for the height of each hook (furring strip support hook 112 and furring strip joint hook 122), and they may be treated as the same component. In this case, the first reinforcing bracket 110 and the second reinforcing bracket 120 may each be formed with cutouts (cutouts 114 and 124) of approximately the same shape or with reinforcing strip fixing portions (first reinforcing strip fixing portion 126a and second reinforcing strip fixing portion 126b) of approximately the same shape. In this case, the cutout of the upper reinforcing bracket may be formed relatively large so that the lower reinforcing bracket can be inserted and received.

[0131] In addition, in this embodiment, the left ceiling material fixing portion 115L and the right ceiling material fixing portion 115R are shown as flat plates, but this is not limited to this. For example, the right end of the left ceiling material fixing portion 115L and the left end of the right ceiling material fixing portion 115R may be bent upward to form a rib. This allows the rib to be fixed to the sill joint fixing portion 121 of the second reinforcing bracket 120 (see Figure 8, etc.) using appropriate screws, thereby integrating the first reinforcing bracket 110 and the second reinforcing bracket 120.

[0132] Furthermore, the configuration of the reinforcing bracket 100 is not limited to that according to this embodiment. For example, it may be similar to the reinforcing bracket 200 according to a second embodiment shown in Figures 13 to 21. The reinforcing bracket 200 according to the second embodiment will be described below. Furthermore, the same descriptions as those for the reinforcing bracket 100 according to the first embodiment will be omitted as appropriate.

[0133] Like the reinforcing bracket 100, the reinforcing bracket 200 is composed of two components: a third reinforcing bracket 210 and a fourth reinforcing bracket 220. The reinforcing bracket 200 differs from the first embodiment in that each component (the first reinforcing bracket 110 and the second reinforcing bracket 120) of the reinforcing bracket 100 according to the first embodiment is fixed to either the soffit support 30 or the soffit support connecting component 40, whereas each component of the reinforcing bracket 200 according to the second embodiment is fixed to both the soffit support 30 and the soffit support connecting component 40. The reinforcing bracket 200 also differs from the first embodiment in that each component of the reinforcing bracket 100 is fixed with a pair of braces of the same type (soffit support braces 70 or soffit connecting braces 80), whereas each component of the reinforcing bracket 200 is fixed with different types (both the soffit support braces 70 and the soffit connecting braces 80).

[0134] The third reinforcing bracket 210 shown in Figures 13 to 15 is a component fixed to the right-side soffit support brace 70R, the front soffit support joint brace 80F, the soffit support 30, the soffit support member 40, and the ceiling surface material 60. The third reinforcing bracket 210 is formed by appropriately bending a single flat metal member. The third reinforcing bracket 210 includes a first plate portion 211, a soffit support hook portion 212, a second plate portion 213, a soffit support joint hook portion 214, a ceiling material fixing portion 215, a reinforcing bracket fixing portion 216, and a notch portion 217.

[0135] The first plate portion 211 is a portion to which the right soffit support brace 70R and the soffit support 30 are fixed. The first plate portion 211 is formed in a flat plate shape. The first plate portion 211 is formed with its plate surface facing the front-to-rear direction. The upper right end portion of the first plate portion 211 is formed so as to be cut out in a substantially rectangular shape when viewed from the front. Thus, the lower portion of the first plate portion 211 is formed so that its length in the left-to-right direction is longer than that of the upper portion. Note that hereinafter, the lower portion of the first plate portion 211 (the portion whose length in the left-to-right direction is longer than that of the upper portion) may be referred to as the "lower portion 211a," and the upper portion of the first plate portion 211 may be referred to as the "upper portion 211b." As shown in FIG. 13, the soffit support 30 is fixed to the lower portion 211a. Furthermore, the right soffit support brace 70R is fixed to the upper portion 211b. Although not shown in the drawings, the lower portion 211a is provided with an appropriate pilot hole through which a screw S1 used for fixing to the siding support 30 is inserted.

[0136] The siding support hook portion 212 is a portion that is hooked onto the upper end of the siding support 30. The siding support hook portion 212 is formed with the board surface facing in the vertical direction. The siding support hook portion 212 is formed so as to protrude rearward from the upper right end of the lower portion 211a of the first board portion 211. The front end of the siding support hook portion 212 is connected to the upper right end of the lower portion 211a.

[0137] The second plate portion 213 is the portion to which the front sill support brace 80F and the sill support member 40 are fixed. The second plate portion 213 is located to the left of the first plate portion 211. The second plate portion 213 is formed in a flat plate shape. The second plate portion 213 is formed with its plate surface facing the left-right direction. The front upper end portion of the second plate portion 213 is formed so as to be cut out in a substantially rectangular shape when viewed from the right side. Thus, the lower portion of the second plate portion 213 is formed so that its length in the front-to-back direction is longer than that of the upper portion. Note that, hereinafter, the lower portion of the second plate portion 213 (the portion whose length in the front-to-back direction is longer than that of the upper portion) may be referred to as the "lower portion 213a," and the upper portion of the second plate portion 213 may be referred to as the "upper portion 213b." The lower portion 213a has a larger vertical width than the lower portion 211a of the first plate portion 211. As shown in FIG. 13, the sill support member 40 is fixed to the lower portion 213a. In addition, the front side siding joint brace 80F is fixed to the upper part 213b. Although not shown, the lower part 213a has an appropriate pilot hole through which the screw S1 used for fixing to the siding joint member 40 is inserted.

[0138] The furring strip connecting hook portion 214 is a portion that is hooked onto the upper end of the furring strip connecting member 40. The furring strip connecting hook portion 214 is formed with the board surface facing in the vertical direction. The furring strip connecting hook portion 214 is formed so as to protrude to the left from the front upper end of the lower portion 213a of the second board portion 213. The right end of the furring strip connecting hook portion 214 is connected to the front upper end of the lower portion 213a.

[0139] The ceiling material fixing portion 215 is the portion to which the ceiling surface material 60 is fixed. The ceiling material fixing portion 215 is formed in a flat plate shape. The ceiling material fixing portion 115 is formed with the plate surface facing in the vertical direction. The rear end of the ceiling material fixing portion 215 is connected to the lower end of the first plate portion 211. Furthermore, the left end of the ceiling material fixing portion 215 is connected to the lower end of the second plate portion 213. Although not shown in the figure, the ceiling material fixing portion 215 has an appropriate pilot hole formed therein through which the screw S2 used to fix it to the ceiling surface material 60 is inserted.

[0140] The reinforcing bracket fixing portion 216 is the portion that is fixed to the fourth reinforcing bracket 220. The reinforcing bracket fixing portion 216 is provided on the second plate portion 213. The reinforcing bracket fixing portion 216 includes a first reinforcing bracket fixing portion 216a and a second reinforcing bracket fixing portion 216b. Although not shown in the figures, the reinforcing bracket fixing portion 216 is formed with an appropriate pilot hole through which the screw S1 used to fix the fourth reinforcing bracket 220 is inserted.

[0141] The first reinforcing bracket fixing portion 216a is a portion formed to protrude leftward from the rear end of the upper portion 213b of the second plate portion 213. The first reinforcing bracket fixing portion 216a is formed with its plate surface facing in the front-to-rear direction. The right end of the first reinforcing bracket fixing portion 216a is connected to the rear end of the upper portion 213b. The first reinforcing bracket fixing portion 216a is formed in a substantially rectangular shape when viewed from the front. The first reinforcing bracket fixing portion 216a is fixed to the first plate portion 221 of the fourth reinforcing bracket 220 (see FIG. 13).

[0142] The second reinforcing bracket fixing portion 216b is a portion formed below the first reinforcing bracket fixing portion 216a so as to protrude rearward from the rear end of the upper portion 213b of the second plate portion 213. The second reinforcing bracket fixing portion 216b is formed with its plate surface facing left and right. The front end of the second reinforcing bracket fixing portion 216b is connected to the rear end of the upper portion 213b. The second reinforcing bracket fixing portion 216b is formed in a substantially rectangular shape when viewed from the right side. The second reinforcing bracket fixing portion 216b is fixed to the second plate portion 223 of the fourth reinforcing bracket 220 (see FIG. 13).

[0143] The cutout portion 217 is a portion formed by cutting out the left end portion of the first plate portion 211. The cutout portion 217 is formed over the entire first plate portion 211 in the up-down direction. The cutout portion 217 is formed to correspond to the hanger 20. Specifically, the width of the cutout portion 217 in the left-right direction is formed to be larger than that of the hanger 20 when viewed from the front.

[0144] 13, 16, and 17 is a member that is fixed to the left soffit support brace 70L, the rear soffit joint brace 80B, the soffit support 30, the soffit joint member 40, and the ceiling surface material 60. The fourth reinforcing bracket 220 is formed by appropriately bending a single flat metal member.

[0145] The fourth reinforcing bracket 220 has roughly the same shape as the third reinforcing bracket 210, except that it does not have the notch 217. More specifically, the fourth reinforcing bracket 220 has roughly the same shape as the third reinforcing bracket 210 rotated 180 degrees around an axis facing up and down. Therefore, in the following description, similarities with the third reinforcing bracket 210 will be omitted as appropriate. The fourth reinforcing bracket 220 comprises a first plate portion 221, a joist support hook portion 222, a second plate portion 223, a joist joint hook portion 224, a ceiling material fixing portion 225, and a reinforcing bracket fixing portion 226.

[0146] The first plate portion 221 is the portion to which the left soffit support brace 70L and the soffit support 30 are fixed. The first plate portion 221 is generally similar to the first plate portion 211 of the third reinforcing bracket 210, except that the first plate portion 221 does not have the notch 217. Note that hereinafter, the lower portion of the first plate portion 221 (the portion longer in the left-right direction than the upper portion) may be referred to as the "lower portion 221a," and the upper portion of the first plate portion 221 may be referred to as the "upper portion 221b." As shown in FIG. 13, the soffit support 30 is fixed to the lower portion 221a. Furthermore, the left soffit support brace 70L is fixed to the upper portion 221b.

[0147] The siding support hook portion 222 is a portion that is hooked onto the upper end of the siding support 30. The siding support hook portion 222 is generally similar to the siding support hook portion 212 of the third reinforcing metal fitting 210.

[0148] The second plate portion 223 is the portion to which the rear soffit joint brace 80B and the soffit joint member 40 are fixed. The second plate portion 223 is generally similar to the second plate portion 213 of the third reinforcing bracket 210. Note that hereinafter, the lower portion of the second plate portion 223 (the portion whose length in the front-to-rear direction is longer than that of the upper portion) may be referred to as the "lower portion 223a," and the upper portion of the second plate portion 223 may be referred to as the "upper portion 223b." As shown in FIG. 13, the soffit joint member 40 is fixed to the lower portion 223a. Furthermore, the rear soffit joint brace 80B is fixed to the upper portion 223b.

[0149] The furring strip joint hook portion 224 is a portion that is hooked onto the upper end portion of the furring strip joint member 40. The furring strip joint hook portion 224 is generally similar to the furring strip joint hook portion 214 of the third reinforcing metal fitting 210.

[0150] The ceiling material fixing portion 225 is the portion to which the ceiling surface material 60 is fixed. The ceiling material fixing portion 225 is generally similar to the ceiling material fixing portion 215 of the third reinforcing metal fitting 210.

[0151] The reinforcing metal fitting fixing portion 226 is the portion fixed to the third reinforcing metal fitting 210. The reinforcing metal fitting fixing portion 226 is provided on the second plate portion 223. The reinforcing metal fitting fixing portion 226 includes a first reinforcing metal fitting fixing portion 226a and a second reinforcing metal fitting fixing portion 226b.

[0152] The first reinforcing bracket fixing portion 226a is generally similar to the first reinforcing bracket fixing portion 216a of the third reinforcing bracket 210, except that it is formed on the lower portion 223a of the second plate portion 223 (positioned lower than the reinforcing bracket fixing portion 216 of the third reinforcing bracket 210). The first reinforcing bracket fixing portion 226a is fixed to the first plate portion 211 of the third reinforcing bracket 210 (see FIG. 13).

[0153] The second reinforcing bracket fixing portion 226b is generally similar to the second reinforcing bracket fixing portion 216b of the third reinforcing bracket 210, except that it is formed on the lower portion 223a of the second plate portion 223 (positioned lower than the reinforcing bracket fixing portion 216 of the third reinforcing bracket 210). The second reinforcing bracket fixing portion 226b is fixed to the second plate portion 213 of the third reinforcing bracket 210 (see FIG. 13).

[0154] 18 to 21, the manner in which the reinforcing metal fitting 200 is attached to the ceiling structure 1 will be described. Note that, below, the points described in the manner in which the reinforcing metal fitting 100 according to the first embodiment is attached will be omitted as appropriate.

[0155] First, the positional relationships between the third reinforcing metal fitting 210, the fourth reinforcing metal fitting 220, the siding support 30, and the siding support member 40 will be described.

[0156] 19, the third reinforcing bracket 210 is positioned in front of the siding support 30 and to the right of the siding support member 40. The siding support hook portion 212 of the third reinforcing bracket 210 is hooked onto the upper end of the siding support 30, and the siding support hook portion 214 is hooked onto the upper end of the siding support member 40. The notch 217 of the third reinforcing bracket 210 is provided in a position corresponding to the hanger 20.

[0157] As shown in Figures 18 and 19, the fourth reinforcing bracket 220, like the third reinforcing bracket 210 described above, is positioned behind the sill support 30 and to the left of the sill support member 40, and is hooked onto the upper ends of the sill support 30 and the sill support member 40.

[0158] As shown in Figure 19, the first reinforcing bracket fixing portion 216a of the third reinforcing bracket 210 is positioned in front of the first plate portion 221 of the fourth reinforcing bracket 220, facing the first plate portion 221 in the front-to-rear direction. The first reinforcing bracket fixing portion 216a faces the first plate portion 221 across the width of the siding support 30 in the front-to-rear direction. The second reinforcing bracket fixing portion 216b is positioned to the right of the second plate portion 223 of the fourth reinforcing bracket 220, facing the second plate portion 223 in the left-to-right direction. The second reinforcing bracket fixing portion 216b faces the first plate portion 221 across the width of the siding support member 40 in the left-to-right direction.

[0159] 19, the first reinforcing bracket fixing portion 226a of the fourth reinforcing bracket 220 is positioned behind the first plate portion 211 of the third reinforcing bracket 210, facing the first plate portion 211 in the front-to-rear direction. The first reinforcing bracket fixing portion 226a faces the first plate portion 211 across the width of the siding support 30 in the front-to-rear direction. The second reinforcing bracket fixing portion 226b is positioned to the left of the second plate portion 213 of the third reinforcing bracket 210, facing the second plate portion 223 in the left-to-right direction. The second reinforcing bracket fixing portion 226b faces the first plate portion 211 across the width of the siding support member 40 in the left-to-right direction.

[0160] As described above, in this embodiment, a gap equal to the width of the siding support 30 or siding support member 40 is formed between the reinforcing metal fitting fixing portion 216 and the reinforcing metal fitting fixing portion 226 and the opposing member. Therefore, in this embodiment, an appropriate spacer (not shown) is interposed in the gap. Note that instead of interposing a spacer, the reinforcing metal fitting fixing portion 216 and the reinforcing metal fitting fixing portion 226 may be appropriately bent to eliminate the gap.

[0161] Next, the positional relationships between the third reinforcing bracket 210, the fourth reinforcing bracket 220, the pair of sill support braces 70, and the pair of sill joint braces 80 will be described.

[0162] As shown in Figures 13 and 20, the first plate portion 211 (upper portion 211b) of the third reinforcing bracket 210 is positioned rearward of the lower end of the right-side soffit support brace 70R, facing the lower end in the front-to-rear direction. The upper portion 211b contacts the rear surface of the right-side soffit support brace 70R. Also, as shown in Figures 13 and 21, the second plate portion 213 (upper portion 213b) of the third reinforcing bracket 210 is positioned to the left of the lower end of the front soffit support brace 80F, facing the lower end in the left-to-right direction. The upper portion 213b contacts the left surface of the front soffit support brace 80F.

[0163] As shown in FIGS. 13 and 20, the first plate portion 221 (upper portion 221b) of the fourth reinforcing bracket 220 is positioned rearward of the lower end of the left soffit support brace 70L, facing the lower end in the front-to-rear direction. In this embodiment, the fourth reinforcing bracket 220 is positioned rearward of the soffit support 30, so the first plate portion 221 is positioned rearward of the first plate portion 211. Therefore, a gap is formed between the first plate portion 221 and the rear surface of the left soffit support brace 70L. Therefore, in this embodiment, an appropriate spacer (not shown) is interposed in this gap. Furthermore, as shown in FIGS. 13 and 21, the second plate portion 223 (upper portion 223b) of the fourth reinforcing bracket 220 is positioned to the left of the lower end of the rear soffit support brace 80B, facing the lower end in the left-to-right direction. The upper portion 223b contacts the left surface of the rear soffit support brace 80B. In this embodiment, the fourth reinforcing bracket 220 is positioned to the left of the siding joint member 40, so the second plate portion 223 is positioned to the left of the second plate portion 213. Therefore, a gap is formed between the second plate portion 223 and the left surface of the rear siding joint brace 80B. Therefore, in this embodiment, an appropriate spacer (not shown) is inserted in the gap.

[0164] Next, the positional relationship between the third reinforcing metal fitting 210, the fourth reinforcing metal fitting 220, and the ceiling surface material 60 will be described.

[0165] 13, 20, and 21, the ceiling material fixing portion 215 of the third reinforcing bracket 210 and the ceiling material fixing portion 225 of the fourth reinforcing bracket 220 are positioned so as to be flush with the underside of the joist 50. In this way, the ceiling material fixing portion 215 and the ceiling material fixing portion 225 come into contact with the upper surface of the ceiling surface material 60. More specifically, as shown in FIG. 13, the ceiling material fixing portion 215 of the third reinforcing bracket 210 comes into contact with the upper surface of the right front region of the partitioned area of the ceiling surface material 60. Furthermore, the ceiling material fixing portion 225 of the fourth reinforcing bracket 220 comes into contact with the upper surface of the left rear region of the partitioned area of the ceiling surface material 60.

[0166] The third reinforcing bracket 210 and fourth reinforcing bracket 220 arranged as described above are each fixed via a reinforcing bracket fixing portion 216, as shown in Figure 13. Specifically, the first reinforcing bracket fixing portion 216a of the third reinforcing bracket 210 is fixed to the first plate portion 221 of the fourth reinforcing bracket 220 using a plurality of screws S1. Furthermore, the second reinforcing bracket fixing portion 216b is fixed to the second plate portion 223 of the fourth reinforcing bracket 220 using a plurality of screws S1.

[0167] Furthermore, the first reinforcing bracket fixing portion 226a of the fourth reinforcing bracket 220 is fixed to the first plate portion 211 of the third reinforcing bracket 210 using multiple screws S1. Furthermore, the second reinforcing bracket fixing portion 226b is fixed to the second plate portion 213 of the third reinforcing bracket 210 using multiple screws S1.

[0168] The reinforcing fittings 200 arranged as described above are fixed to the soffit support brace 70, soffit joint brace 80, soffit support 30, soffit joint member 40 and ceiling surface material 60 using fixing means such as screws S1, screws S2 and bolts B, in a manner similar to the first embodiment described above.

[0169] The reinforcing bracket 200 arranged as described above can displace the various components constituting the ceiling structure 1 as a whole, similar to the first embodiment, and can prevent the ceiling surface material 60 from falling off.

[0170] In this embodiment, the ceiling material fixing portion 215 and the ceiling material fixing portion 225 are fixed to two of the four divided areas of the ceiling surface material 60. This reduces the number of installation locations where the screws S2 are fastened, simplifying the installation process.

[0171] As described above, in the reinforcing member (reinforcing metal fitting 200) according to this embodiment, The support member is The siding is fixed to a siding support member (siding support 30), and the siding support member (siding support 30) is fixed to the siding support member (siding support 30) so as to intersect in a plan view. The fixed reinforcing member (reinforcing metal fitting 200) is Among the plurality of braces (furring strip support brace 70, furring strip joint brace 80), one of the pair of first braces (furring strip support brace 70) provided on the furring strip support member (furring strip support 30) side and one of the pair of second braces (furring strip joint brace 80) provided on the furring strip joint member 40 side are fixed via the brace fixing portion (upper portion 211b, upper portion 213b) to a third fixing reinforcement member (third reinforcing bracket 210), the other of the pair of first braces and the other of the pair of second braces are fixed via the brace fixing portions (upper portion 221b, upper portion 223b), respectively; and a fourth fixing reinforcing member (fourth reinforcing bracket 220) formed separately from the third fixing reinforcing member (third reinforcing bracket 210); It is composed of the following.

[0172] This configuration allows one component, the first brace (furring strip support brace 70), and the second brace (furring strip joint brace 80) to be integrally fixed. That is, one of the pair of first braces (furring strip support brace 70) provided on the furring strip support component (furring strip support 30), one of the pair of second braces (furring strip joint brace 80) provided on the furring strip joint component 40, and the third fixing reinforcement member (third reinforcing bracket 210) can be integrally fixed. Furthermore, the other of the pair of first braces (furring strip support brace 70), the other of the pair of second braces (furring strip joint brace 80), and the fourth fixing reinforcement member (fourth reinforcing bracket 220) can be integrally fixed. Furthermore, by providing the third fixing reinforcement member (third reinforcing bracket 210) and the fourth fixing reinforcement member (fourth reinforcing bracket 220) as separate components, the component can be easily attached to the support component.

[0173] In addition, at least one of the third fixing reinforcing member (third reinforcing metal fitting 210) and the fourth fixing reinforcing member (fourth reinforcing metal fitting 220) is It has a second fixing portion (reinforcing bracket fixing portion 216, 226) that is fixed to the other of the third fixing reinforcement member (third reinforcing bracket 210) and the fourth fixing reinforcement member (fourth reinforcing bracket 220).

[0174] With this configuration, by fixing the third fixing reinforcement member (third reinforcing bracket 210) and the fourth fixing reinforcement member (fourth reinforcing bracket 220) to each other, a pair of first braces (furring sill support braces 70) and a pair of second braces (furring sill joint braces 80) can be fixed to each other.

[0175] The third fixing reinforcing member (third reinforcing metal fitting 210) is In a plan view, the ceiling material (ceiling surface material 60) is partitioned by the intersection of the siding support member (siding support 30) and the siding support member 40. The ceiling material is fixed to one of the four areas (partitioned areas) of the ceiling material (ceiling surface material 60) via the ceiling material fixing portion 215. The fourth fixed reinforcing member (fourth reinforcing metal fitting 220) is Of the four areas (partitioned areas), it is fixed to one area different from the area to which the third fixed reinforcement member (third reinforcing bracket 210) is fixed via the ceiling material fixing portion 225.

[0176] This configuration simplifies installation. That is, by fixing the third fixing reinforcement member (third reinforcing bracket 210) and the fourth fixing reinforcement member (fourth reinforcing bracket 220) to two of the four areas of the ceiling material (ceiling surface material 60) partitioned by the joist support member (joist support 30) and the joist joint member 40 in a plan view, the number of fixing points between the ceiling material (ceiling surface material 60) and the ceiling material fixing parts 215, 225 can be relatively reduced. This reduces the number of installation points using screws, etc.

[0177] The reinforcing metal fitting 200 is one embodiment of a fixed reinforcing member. The third reinforcing metal fitting 210 is an embodiment of a third fixed reinforcing member. The fourth reinforcing metal fitting 220 is one embodiment of a fourth fixed reinforcing member. Moreover, the upper portion 211b of the first plate portion 211 is an embodiment of a brace fixing portion. Moreover, the upper portion 213b of the second plate portion 213 is one embodiment of a brace fixing portion. Moreover, the reinforcing metal fitting fixing portion 216 and the reinforcing metal fitting fixing portion 226 are an embodiment of a second fixing portion.

[0178] Although each embodiment has been described above, the present invention is not limited to the above configurations, and various modifications are possible within the scope of the invention described in the claims.

[0179] For example, in the second embodiment shown in FIG. 13 , appropriate spacers (not shown) are interposed in the gap between the first plate portion 211 of the fourth reinforcing bracket 220 and the left-side siding support brace 70L and the gap between the second plate portion 223 and the rear siding support brace 80B. However, this is not limited to this configuration. For example, as shown in the modified example in FIG. 22 , the third reinforcing bracket 210 or the fourth reinforcing bracket 220 may be appropriately bent to form the upper portions 211b and 221b on the same plane, and the upper portions 213b and 223b on the same plane. This eliminates the gaps between the braces as shown in FIG. 13 . Note that, although the illustrated example shows an example in which the third reinforcing bracket 210 is bent, the fourth reinforcing bracket 220 may also be bent.

[0180] Furthermore, the configuration of the reinforcing metal fitting is not limited to those described in the above embodiments. For example, it may be a reinforcing metal fitting 300 according to a third embodiment shown in Figures 23 to 28. The reinforcing metal fitting 300 according to the third embodiment will be described below. Furthermore, the same description as for the reinforcing metal fitting 100 according to the first embodiment will be omitted as appropriate.

[0181] The reinforcing metal fitting 300 is composed of four members: a fifth reinforcing metal fitting 310, a sixth reinforcing metal fitting 320, a seventh reinforcing metal fitting 330, and an eighth reinforcing metal fitting 340.

[0182] The configuration of the fifth reinforcing metal fitting 310 will be described in detail below with reference to FIGS.

[0183] As shown in Figure 23, the fifth reinforcing bracket 310 is fixed to the left and right sill support braces 70L and 70R, respectively, and is arranged to span between the left and right sill support braces 70L and 70R. The fifth reinforcing bracket 310 is a metal member. The fifth reinforcing bracket 310 is formed by appropriately bending a single flat plate-shaped member. The fifth reinforcing bracket 310 has a main body 311, an upper end extension 312, a lower end extension 313, a claw portion 314, and a notch 318.

[0184] The main body 311 shown in FIG. 24 is the main structure of the fifth reinforcing bracket 310. The main body 311 is formed in a flat plate shape. The main body 311 is disposed with its longitudinal direction oriented in the left-right direction. In this embodiment, the length of the main body 311 in the longitudinal direction is 440 mm. The main body 311 is disposed with its short side oriented in the up-down direction. In this embodiment, the length of the short side of the main body 311 is formed in a 100 mm. The main body 311 is disposed with its plate thickness oriented in the front-to-back direction. In this embodiment, the length of the main body 311 in the plate thickness direction is 2.3 mm. In this way, the main body 311 is formed to be large enough to be easily grasped in one hand by a worker (a person installing the fifth reinforcing bracket 310, the sixth reinforcing bracket 320, etc.).

[0185] The upper end extension 312 is a portion that extends rearward from the upper end of the main body 311. The upper end extension 312 is formed so as to span the left and right ends of the main body 311.

[0186] The lower end extension 313 is a portion that extends rearward from the lower end of the main body 311. The lower end extension 313 is formed in a portion of the main body 311 excluding the left and right ends and the notch 318 described below.

[0187] In this way, the upper end extension 312 and the lower end extension 313 improve the rigidity of the fifth reinforcing bracket 310. Furthermore, when a worker grasps the fifth reinforcing bracket 310 with one hand, for example, by hooking the thumb into the lower end extension 313 and the other fingers into the upper end extension 312, the worker can firmly grasp the fifth reinforcing bracket 310 (compared to a case in which the upper end extension 312 and the lower end extension 313 are not present). The lower end extension 313 also functions to temporarily place the main body 311 on the upper end of the joist support 30.

[0188] The claw portions 314 extend generally downward from the left and right lower end portions of the main body portion 311. The left and right claw portions 314 are formed symmetrically in the left-right direction. The claw portions 314 include a first portion 315 and a second portion 316.

[0189] The first portion 315 is a portion that connects the second portion 316 of the claw portion 314 and the main body portion 311. The first portion 315 is formed in a generally rectangular flat plate shape when viewed from the front. The first portion 315 is formed by bending a portion of the lower end portion of the main body portion 311 downward and forward. That is, the upper end portion of the first portion 315 is connected to the main body portion 311. The first portion 315 is formed in an inclined shape that moves away from the main body portion 311 in the front-to-rear direction as it extends downward.

[0190] The second portion 316 is a portion that extends downward from the first portion 315 of the claw portion 314. The second portion 316 is formed in a generally rectangular flat plate shape when viewed from the front. The second portion 316 is provided with its plate surface facing in the front-to-rear direction. The upper end of the second portion 316 is connected to the lower end of the first portion 315. The rear side of the second portion 316 is formed so as to be generally flush with the front side of the main body portion 311 in the front-to-rear direction. The second portion 316 is formed with a screw hole 317 that penetrates in the front-to-rear direction.

[0191] The cutout 318 is a portion formed by cutting out the main body 311. The cutout 318 is formed to extend from the lower end at the center in the left-right direction of the main body 311 to the middle in the up-down direction. The cutout 318 is formed in a substantially rectangular shape in a front view that is large enough to insert and receive the furring edge joint member 40. Specifically, the size (left-right width and up-down width) of the cutout 318 in a front view is larger than the furring edge joint member 40 in a front view (see FIG. 28).

[0192] The configuration of the sixth reinforcing metal fitting 320 will be described in detail below with reference to FIGS.

[0193] As will be described later, the sixth reinforcing bracket 320 is fixed to the joist support 30 and the ceiling surface material 60. The sixth reinforcing bracket 320 is formed in a generally longitudinal shape. In this embodiment, the longitudinal (left-right) length of the sixth reinforcing bracket 320 is 220 mm. The sixth reinforcing bracket 320 is formed by appropriately bending a single metal plate member with a thickness of 1.2 mm. The sixth reinforcing bracket 320 is formed in a generally box-like shape that is open toward the front in side view. The sixth reinforcing bracket 320 has an upper end extension portion 321, a hanging portion 322, a connecting portion 323, and a lower end extension portion 324.

[0194] The upper end extension 321 is a portion that constitutes the upper side surface of the sixth reinforcing bracket 320. The upper end extension 321 is provided so as to extend horizontally at the upper end of the sixth reinforcing bracket 320. The upper end extension 321 is arranged with its plate surface facing in the vertical direction. The upper end extension 321 is formed in a generally rectangular shape that is elongated in the left-right direction in a plan view.

[0195] The hanging portion 322 is a portion that hangs down from the front end of the upper extension portion 321. The hanging portion 322 is arranged with its plate surface facing in the front-to-rear direction. The hanging portion 322 is formed in a generally rectangular shape that is elongated in the left-to-right direction when viewed from the front. The upper end of the hanging portion 322 is connected to the front end of the upper extension portion 321. The hanging portion 322 is formed with screw holes 322a that penetrate in the front-to-rear direction. A plurality of screw holes 322a (three in this embodiment) are formed at intervals from each other in the left-to-right direction.

[0196] The connecting portion 323 is a portion that constitutes the rear side surface of the sixth reinforcing bracket 320. The connecting portion 323 connects the upper end extension portion 321 and the lower end extension portion 324, which will be described later. The connecting portion 323 is disposed with its plate surface facing upward and rearward and downward and frontward. That is, the connecting portion 323 is formed so that it extends linearly from its lower end to its upper and frontward in a side view. Thus, the entire connecting portion 323 is formed in a position that is inclined forward from its lower end relative to the vertical direction. The upper end of the connecting portion 323 is connected to the rear end of the upper end extension portion 321. Note that, in the above example, the connecting portion 323 is formed in an inclined position (with its plate surface facing upward and rearward and downward), but instead of the above, the connecting portion 323 may be formed in a position that extends in the vertical direction (with its plate surface facing the front-to-rear direction).

[0197] The lower end extension 324 is a portion that constitutes the lower surface of the sixth reinforcing bracket 320. The lower end extension 324 is provided to extend horizontally at the lower end of the sixth reinforcing bracket 320. The lower end extension 324 is arranged with its plate surface facing in the vertical direction and is parallel to the upper end extension 321. The lower end extension 324 is formed in a generally rectangular shape that is elongated in the left-right direction in a plan view. The rear end of the lower end extension 324 is connected to the lower end of the connection portion 323. The front end of the lower end extension 324 is formed in a rib shape that is bent upward. Although not shown in the figure, the lower end extension 324 has appropriate pilot holes through which screws S2 used to fasten to the ceiling surface material 60 are inserted in the vertical direction.

[0198] The length of the lower end extension 324 in the short side direction (front-rear direction) is longer than the length of the upper end extension 321 in the short side direction (front-rear direction). In this embodiment, the length of the lower end extension 324 in the long side direction is 50 mm (approximately 3 to 4 times the length of the upper end extension 321 in the long side direction). The rear end of the lower end extension 324 is located rearward of the rear end of the upper end extension 321 in the long side direction. Note that if the connecting portion 323 is not inclined but is formed in an orientation extending in the vertical direction (an orientation in which the plate surface faces in the long side direction), the rear end of the lower end extension 324 and the rear end of the upper end extension 321 may be located at the same position in the long side direction. Furthermore, the front end of the lower end extension 324 is located forward of the front end of the upper end extension 321 in the long side direction.

[0199] Thus, in the sixth reinforcing bracket 320, the upper end extension 321 is located inside the lower end extension 324 in the front-to-rear direction via the connecting portion 323, which is inclined forward relative to the vertical direction as a whole. Also, the front end of the upper end extension 321 (i.e., the hanging portion 322) is located at the same position as the center of the lower end extension 324 in the front-to-rear direction.

[0200] In addition, in the sixth reinforcing metal fitting 320, a generally U-shaped space that is open downward in side view is formed by the upper end extension 321, the hanging portion 322, and the upper portion of the connecting portion 323. The upper portion of the joist support 30 is inserted into this space, as will be described later. Note that hereinafter, this space is referred to as the "insertion portion 325."

[0201] The configuration of the seventh reinforcing metal fitting 330 will be described in detail below with reference to FIGS.

[0202] As shown in Figure 23, the seventh reinforcing bracket 330 is fixed to the front and rear nodular joint braces 80F and 80B, respectively, and is arranged to span between the front and rear nodular joint braces 80F and 80B. The seventh reinforcing bracket 330 is a metal member. The seventh reinforcing bracket 330 is formed by appropriately bending a single flat plate-shaped member of the same thickness as the fifth reinforcing bracket 310.

[0203] A pair of seventh reinforcing brackets 330 are arranged on both sides of the fifth reinforcing bracket 310 in the front-rear direction. Hereinafter, the front seventh reinforcing bracket 330 may be referred to as the "seventh reinforcing bracket 330F," and the rear seventh reinforcing bracket 330 may be referred to as the "seventh reinforcing bracket 330B." The pair of seventh reinforcing brackets 330 are formed to be roughly symmetrical with each other in the front-rear direction, except for the reinforcing bracket fixing portion 338, which will be described later. Therefore, the following description will mainly focus on the configuration of the front seventh reinforcing bracket 330F, and will omit a description of the rear seventh reinforcing bracket 330B as appropriate. The seventh reinforcing bracket 330 includes a main body portion 331, an upper end extension portion 332, a lower end extension portion 333, a claw portion 334, and a reinforcing bracket fixing portion 338.

[0204] The main body 331 shown in FIG. 25 is the main structure of the seventh reinforcing bracket 330. The main body 331 is formed in a flat plate shape. The main body 331 is arranged with its longitudinal direction oriented in the front-to-rear direction. In this embodiment, the longitudinal length of the main body 331 is formed to be approximately half the longitudinal length of the main body 311 of the fifth reinforcing bracket 310. The main body 331 is arranged with its short side oriented in the up-down direction. In this embodiment, the short side length of the main body 331 is formed to be shorter than the short side length of the main body 311 of the fifth reinforcing bracket 310. The main body 331 is arranged with its plate thickness oriented in the left-to-right direction.

[0205] The upper end extension 332 is a portion that extends leftward from the upper end of the main body 331. The upper end extension 332 is formed so as to extend across the front and rear ends of the main body 331.

[0206] The lower end extension 333 is a portion that extends leftward from the lower end of the main body 331. The lower end extension 333 is formed on the main body 331 except for the front end portion.

[0207] In this way, the upper end extension 332 and the lower end extension 333 improve the rigidity of the seventh reinforcing bracket 330. Furthermore, when a worker grasps the seventh reinforcing bracket 330 with one hand, for example, by hooking the thumb on the lower end extension 333 and the other fingers on the upper end extension 332, the worker can firmly grasp the seventh reinforcing bracket 330 (compared to a case in which the upper end extension 332 and the lower end extension 333 are not present). The lower end extension 333 also has the function of temporarily placing the main body 331 on the upper end of the siding joint member 40.

[0208] The claw portion 334 is a portion that extends generally downward from the lower end portion on the front side of the main body portion 331. The claw portion 334 includes a first portion 335 and a second portion 336.

[0209] The first portion 335 is a portion that connects the second portion 336 of the claw portion 334 and the main body portion 331. The first portion 335 is formed in a similar shape to the first portion 315 of the fifth reinforcing metal fitting 310, except that the first portion 335 is formed by bending a portion of the lower end portion of the main body portion 331 downward and to the right.

[0210] The second portion 336 extends downward from the first portion 335 of the claw portion 334. The second portion 336 is formed in a similar shape to the second portion 316 of the fifth reinforcing metal fitting 310, except that the plate surface of the second portion 336 faces in the left-right direction. A screw hole 337 is formed in the second portion 336, penetrating it in the left-right direction.

[0211] The reinforcing bracket fixing portion 338 is a portion that is fixed to the main body portion 311 of the fifth reinforcing bracket 310. The reinforcing bracket fixing portion 338 is formed with its plate surface facing in the front-to-rear direction. The reinforcing bracket fixing portion 338 extends rightward from the rear end of the main body portion 331. The reinforcing bracket fixing portion 338 is formed so as to span the upper and lower ends of the main body portion 331. The reinforcing bracket fixing portion 338 is formed in a substantially rectangular shape when viewed from the front. The vertical dimension of the reinforcing bracket fixing portion 338 is formed to be approximately the same as the vertical dimension from the upper end of the notch 318 of the fifth reinforcing bracket 310 to the upper end of the main body portion 311. Although not shown in the figure, the reinforcing bracket fixing portion 338 has an appropriate pilot hole formed therein through which the screw S1 used to fix the fifth reinforcing bracket 310 is inserted in the front-to-rear direction.

[0212] As described above, the configuration of the seventh reinforcing bracket 330 has been described, focusing on the front-side seventh reinforcing bracket 330F. As mentioned above, the rear-side seventh reinforcing bracket 330B is formed in a shape that is generally symmetrical in the front-rear direction to the front-side seventh reinforcing bracket 330F, except for the reinforcing bracket fixing portion 338. Specifically, as shown in Figure 26(a), the rear-side seventh reinforcing bracket 330B is formed in a shape that is generally symmetrical in the front-rear direction to the front-side seventh reinforcing bracket 330F, except for the fact that the reinforcing bracket fixing portion 338 extends leftward from the front end of the main body portion 331.

[0213] The configuration of the eighth reinforcing metal fitting 340 will be described in detail below with reference to FIGS.

[0214] As will be described later, the eighth reinforcing bracket 340 is fixed to the joist support member 40 and the ceiling surface material 60. The eighth reinforcing bracket 340 is formed in substantially the same shape as the sixth reinforcing bracket 320, except that the vertical dimension of the connecting portion 323 is larger than the vertical dimension of the connecting portion 323 of the sixth reinforcing bracket 320, and that the eighth reinforcing bracket 340 is fixed to the joist support member 40 rather than the joist support 30. Therefore, the components that make up the eighth reinforcing bracket 340 are given the same reference numerals as the components of the sixth reinforcing bracket 320 (such as the upper end extension portion 321), and descriptions thereof will be omitted.

[0215] The fifth reinforcing bracket 310, sixth reinforcing bracket 320, seventh reinforcing bracket 330, and eighth reinforcing bracket 340 described above can be installed in the ceiling structure 1 after all of the components constituting the ceiling structure 1 (hanging bolts 10, hangers 20, joist supports 30, joist joint members 40, joist 50, ceiling surface material 60, joist support braces 70, and joist joint braces 80) except for the ceiling surface material 60 have been installed. Specifically, the sixth reinforcing bracket 320 and the eighth reinforcing bracket 340 are first installed after all of the components except for the ceiling surface material 60 have been installed as described above. In this embodiment, as shown in FIG. 27 etc., two sixth reinforcing brackets 320 and two eighth reinforcing brackets 340 are installed. Next, the fifth reinforcing bracket 310 and the seventh reinforcing bracket 330 are installed. Finally, the ceiling surface material 60 is installed.

[0216] The manner in which the fifth reinforcing metal fitting 310, the sixth reinforcing metal fitting 320, the seventh reinforcing metal fitting 330, and the eighth reinforcing metal fitting 340 are attached to the ceiling structure 1 will be described below.

[0217] First, the manner in which the sixth reinforcing metal fitting 320 is attached will be described with reference to FIGS. 23, 25, 27 and 28. FIG.

[0218] In this embodiment, two sixth reinforcing brackets 320 are attached as described above. The attachment manner of the two sixth reinforcing brackets 320 is substantially the same, except that they are symmetrical in the left-right direction. Therefore, the following description will focus mainly on the sixth reinforcing bracket 320 on the right side, and description of the sixth reinforcing bracket 320 on the left side will be omitted where appropriate.

[0219] The sixth reinforcing bracket 320 is hooked onto the siding support 30 from above. More specifically, as shown in FIG. 27 , the upper end of the siding support 30 is inserted into the insertion portion 325 of the sixth reinforcing bracket 320, and the upper extension portion 321 of the sixth reinforcing bracket 320 is placed on the upper end of the siding support 30. The hanging portion 322 of the sixth reinforcing bracket 320 (the front surface of the insertion portion 325) comes into contact with the front surface of the siding support 30. As shown in FIGS. 23 and 25 , a screw S1 is screwed into the screw hole 322a of the hanging portion 322. Of the three screw holes 322a, the screw S1 is screwed into the leftmost screw hole 322a via the screw hole 317 of the fifth reinforcing bracket 310. In this way, the hanging portion 322 (part of the insertion portion 325) of the sixth reinforcing bracket 320 is fixed to the siding support 30 by the screw S1.

[0220] In this way, the sixth reinforcing bracket 320 is fixed to the soffit support 30 by a fixing means (screw S1) inserted laterally, so that even if a large shear force acts on the soffit support 30, such as when an earthquake occurs and a force acts in one longitudinal direction on one of a pair of soffit support braces 70 and a force acts in the other longitudinal direction on the other soffit support brace 70, deformation of the soffit support 30 is suppressed, and stress can be transmitted more reliably between the soffit support 30, the sixth reinforcing bracket 320 and the ceiling surface material 60.

[0221] Furthermore, when a worker fastens the sixth reinforcing bracket 320 to the joist support 30, the sixth reinforcing bracket 320 can be hooked onto the joist support 30 and fastened (temporarily fastened) even before fastening with the screws S1. This improves the ease of installation when installing the sixth reinforcing bracket 320 (more specifically, the screw fastening work).

[0222] 28, the underside of the lower end extension 324 of the sixth reinforcing bracket 320 is located on the same horizontal plane as the underside of the joist 50. The lower end extension 324 of the sixth reinforcing bracket 320 is fixed to a ceiling surface material 60 supported by the joist 50. Specifically, the lower end extension 324 of the sixth reinforcing bracket 320 is overlapped with the ceiling surface material 60 with almost no gap between them, and is fixed to the ceiling surface material 60 with multiple screws S2 screwed from below to above the ceiling surface material 60 (see FIG. 23). In this way, the sixth reinforcing bracket 320 is fixed to the joist support 30 and the ceiling surface material 60, respectively.

[0223] Next, the installation mode of the eighth reinforcing bracket 340 will be described using Figures 23, 27, and 28. As shown in Figures 23 and 27, in this embodiment, two eighth reinforcing brackets 340 are installed as described above. The installation mode of the eighth reinforcing bracket 340 is generally similar to the installation mode of the sixth reinforcing bracket 320, except that it is installed to the siding support member 40 rather than the siding support 30. Therefore, a detailed description of the installation mode of the eighth reinforcing bracket 340 will be omitted.

[0224] As shown in Figure 28, the underside of the lower end extension 324 of the eighth reinforcing bracket 340 is located on the same horizontal plane as the underside of the joist 50. Like the lower end extension 324 of the sixth reinforcing bracket 320, the lower end extension 324 of the eighth reinforcing bracket 340 is fixed to the ceiling surface material 60 by a plurality of screws S2 that are screwed from below to above the ceiling surface material 60 (see Figure 23). In this way, the sixth reinforcing bracket 320 is fixed to the joist joint member 40 and the ceiling surface material 60, respectively.

[0225] Next, the fifth mode of attachment of the reinforcing metal fitting 310 will be described with reference to FIGS.

[0226] In this embodiment, the attachment modes of the right and left halves of the fifth reinforcing bracket 310 are substantially the same except that they are symmetrical in the left-right direction. Therefore, the following description will focus on the right half of the fifth reinforcing bracket 310, and description of the left half will be omitted where appropriate.

[0227] As shown in Figures 23 and 28, the fifth reinforcing bracket 310 is installed above the siding support 30, clip member 51, and sixth reinforcing bracket 320. The fifth reinforcing bracket 310 is placed on the siding support 30, clip member 51, and sixth reinforcing bracket 320. More specifically, the lower end extension 313 of the fifth reinforcing bracket 310 is placed directly on the clip member 51 and sixth reinforcing bracket 320. The lower end extension 313 of the fifth reinforcing bracket 310 is placed indirectly on the siding support 30 via the clip member 51 and sixth reinforcing bracket 320. In this manner, the fifth reinforcing bracket 310 is installed so as to directly or indirectly contact the siding support 30, clip member 51, and sixth reinforcing bracket 320 from above. In this state, the siding support joint member 40 is inserted into the notch 318 of the fifth reinforcing bracket 310.

[0228] The fifth reinforcing bracket 310 is also provided with a claw portion 314 that laterally abuts against the siding support 30. More specifically, the rear surface of the second portion 316 of the claw portion 314 abuts against the front surface of the hanging portion 322 of the sixth reinforcing bracket 320 from the front side. The hanging portion 322 of the sixth reinforcing bracket 320 abuts against the siding support 30. Therefore, the claw portion 314 of the fifth reinforcing bracket 310 abuts against the siding support 30 via the hanging portion 322 of the sixth reinforcing bracket 320.

[0229] Furthermore, the fifth reinforcing bracket 310 (claw portion 314) is fixed to the sixth reinforcing bracket 320 (hanging portion 322) and the siding support 30 by a screw S1 inserted through a screw hole 317 (see FIG. 27). The screw hole 317 of the fifth reinforcing bracket 310 is arranged to overlap in the front-to-rear direction with the screw hole 322a at the left end of the sixth reinforcing bracket 320. In this way, the fifth reinforcing bracket 310 and the sixth reinforcing bracket 320 are fastened together via the screw holes (screw hole 317 and screw hole 322a) that are arranged to overlap in the front-to-rear direction.

[0230] The fifth reinforcing bracket 310 is also provided so as to abut against the lower end of the right sill support brace 70R (the portion above the portion fixed to the sill support 30 by the bolt B). More specifically, the front side of the main body 311 of the fifth reinforcing bracket 310 abuts against the rear side (closed surface) of the lower end of the right sill support brace 70R.

[0231] The fifth reinforcing bracket 310 is also fixed to the lower end of the right-side soffit support brace 70R with a screw S1. The screws S1 are provided at least at the top and bottom of the portion of the fifth reinforcing bracket 310 that engages the main body 311. While the example shown in FIG. 23 shows an example in which two screws S1 are used to fasten the fifth reinforcing bracket 310 to the right-side soffit support brace 70R, three or more screws S1 may also be used for fastening. In this way, the right-side soffit support brace 70R is not only fixed directly to the soffit support 30 with the bolt B, but is also fixed indirectly to the soffit support 30 via the fifth reinforcing bracket 310 and the sixth reinforcing bracket 320. That is, the right-side soffit support brace 70R not only supports the ceiling surface material 60 via the soffit 50 supported by the soffit support 30, but also via the fifth reinforcing bracket 310 and the sixth reinforcing bracket 320 (more specifically, the lower end extension 324). In other words, the right-side soffit support brace 70R can support the ceiling surface material 60 not only at a location relatively close to the lower end but also at a location relatively far away. In this way, in this embodiment, the two sixth reinforcing brackets 320 (lower end extensions 324) can support the ceiling surface material 60 at a location relatively far away horizontally from the intersection (attraction point) P of the axes of the pair of soffit support braces 70 in a front view, as shown in FIG. 28 .

[0232] Next, a mounting method for the seventh reinforcing metal fitting 330 will be described with reference to FIGS. 23, 25, 27 and 28. FIG.

[0233] In this embodiment, the attachment modes of the front seventh reinforcing bracket 330F and the rear seventh reinforcing bracket 330B are substantially the same except that they are generally symmetrical in the front-to-rear direction. Therefore, the following description will focus on the front seventh reinforcing bracket 330F, and description of the rear seventh reinforcing bracket 330B will be omitted where appropriate.

[0234] As shown in Figures 23 and 28, the seventh reinforcing bracket 330 is provided above the siding support member 40 and the eighth reinforcing bracket 340. The seventh reinforcing bracket 330 is placed on the siding support member 40 and the eighth reinforcing bracket 340. More specifically, the lower end extension 333 of the seventh reinforcing bracket 330 is placed directly on the eighth reinforcing bracket 340. Furthermore, the lower end extension 333 of the seventh reinforcing bracket 330 is placed indirectly on the siding support member 40 via the eighth reinforcing bracket 340. In this way, the seventh reinforcing bracket 330 is provided so as to directly or indirectly contact the siding support member 40 and the eighth reinforcing bracket 340 from above.

[0235] The seventh reinforcing bracket 330 is also configured so that its claw portion 334 abuts the siding joint member 40 from the side. More specifically, the left side surface of the second portion 336 of the claw portion 334 abuts the right side surface of the hanging portion 322 of the eighth reinforcing bracket 340 from the right side. The hanging portion 322 of the eighth reinforcing bracket 340 abuts the siding joint member 40. Therefore, the claw portion 334 of the seventh reinforcing bracket 330 abuts the siding joint member 40 via the hanging portion 322 of the eighth reinforcing bracket 340.

[0236] The seventh reinforcing bracket 330 (claw portion 334) is fixed to the eighth reinforcing bracket 340 (hanging portion 322) and the siding support member 40 by a screw S1 inserted through a screw hole 337 (see FIG. 27). The screw hole 337 of the seventh reinforcing bracket 330 is provided so as to overlap in the left-right direction with the screw hole 322a at the rear end of the eighth reinforcing bracket 340. In this way, the seventh reinforcing bracket 330 and the eighth reinforcing bracket 340 are fastened together via the screw holes (screw hole 337 and screw hole 322a) that are provided so as to overlap in the left-right direction.

[0237] The seventh reinforcing bracket 330 is provided so that its reinforcing bracket fixing portion 338 abuts against the main body 311 of the fifth reinforcing bracket 310. More specifically, the rear side of the reinforcing bracket fixing portion 338 of the seventh reinforcing bracket 330 (the front seventh reinforcing bracket 330F) abuts against the front side of the main body 311 of the fifth reinforcing bracket 310. The reinforcing bracket fixing portion 338 of the seventh reinforcing bracket 330 is fixed to the main body 311 of the fifth reinforcing bracket 310 with a screw S1. This fixes the fifth reinforcing bracket 310 and the seventh reinforcing bracket 330 to each other.

[0238] The seventh reinforcing bracket 330 is also provided to abut against the lower end of the front soffit joint brace 80F (the upper part of the part fixed to the soffit joint member 40 by the bolt B). More specifically, the right side surface of the main body 331 of the seventh reinforcing bracket 330 abuts against the left side surface (closed surface) of the lower end of the front soffit joint brace 80F.

[0239] The seventh reinforcing bracket 330 is fixed to the lower end of the front soffit joint brace 80F with a screw S1. The screw S1 is provided at least at the upper and lower parts of the part of the seventh reinforcing bracket 330 that is attached to the main body 331. While the example shown in FIG. 23 shows an example in which two screws S1 are used to fasten the seventh reinforcing bracket 330 to the front soffit joint brace 80F, three or more screws S1 may be used for fastening. In this way, the front soffit joint brace 80F is not only directly fixed to the soffit joint member 40 with the bolt B, but is also indirectly fixed to the soffit joint member 40 via the seventh reinforcing bracket 330 and the eighth reinforcing bracket 340. That is, the front soffit joint brace 80F not only supports the ceiling surface material 60 via the soffit joint member 40 and the soffit support 30, but also via the seventh reinforcing bracket 330 and the eighth reinforcing bracket 340 (more specifically, the lower end extension 324). In other words, the front soffit joint brace 80F can support the ceiling surface material 60 not only at a location relatively close to the lower end, but also at a location relatively far away. Thus, in this embodiment, the two eighth reinforcing brackets 340 (lower end extensions 324) can support the ceiling surface material 60 at a location relatively far away horizontally from the intersection (not shown) of the axes of the pair of soffit joint braces 80 in a right side view (see FIG. 23).

[0240] Similar to the first and second embodiments, the reinforcing bracket 300 arranged as described above can displace the various components constituting the ceiling structure 1 as a whole, preventing the ceiling surface material 60 from falling off. In this embodiment, the sixth reinforcing bracket 320 (lower end extension 324) and the eighth reinforcing bracket 340 (lower end extension 324) can support the ceiling surface material 60 at a location relatively distant horizontally from the intersection P between the axes of a pair of joist support braces 70 in a front view and the intersection (not shown) between the axes of a pair of joist connecting braces 80. This can prevent stress concentration when the braces are arranged in a cross shape.

[0241] The reinforcing metal fitting 300 is one embodiment of a fixed reinforcing member. The fifth reinforcing metal fitting 310 and the sixth reinforcing metal fitting 320 are an embodiment of the first fixed reinforcing member. The seventh reinforcing metal fitting 330 and the eighth reinforcing metal fitting 340 are an embodiment of the second fixed reinforcing member. The lower end extension 324 is an embodiment of a ceiling material fixing portion. The claw portion 314 and the hanging portion 322 are one embodiment of a fixing portion for the soffit support member. The claw portion 334 and the hanging portion 322 are one embodiment of the furring strip support member fixing portion. Furthermore, the main body portion 311 and the main body portion 331 are an embodiment of a brace fixing portion. Also, the notch 318 is an embodiment of the notch. The reinforcing metal fitting fixing portion 338 is an embodiment of a first fixing portion.

[0242] Furthermore, in each of the above embodiments, examples have been shown in which notches (notch 114, notch 124, notch 217, and notch 318) are formed in reinforcing bracket 100, reinforcing bracket 200, and reinforcing bracket 300, but this is not limited to such an embodiment, and the above-mentioned notches do not have to be formed.

[0243] Furthermore, in each of the above embodiments, examples have been shown in which the reinforcing bracket 100, reinforcing bracket 200 and reinforcing bracket 300 are provided with fixing portions (reinforcing bracket fixing portion 126, reinforcing bracket fixing portion 216, reinforcing bracket fixing portion 226 and reinforcing bracket fixing portion 338), but this is not limited to such an embodiment, and the above fixing portions may not be provided.

[0244] Furthermore, in each of the above embodiments, the reinforcing metal fittings 100 and 200 are shown as being made up of two members (first reinforcing metal fitting 110 and second reinforcing metal fitting 120, third reinforcing metal fitting 210 and fourth reinforcing metal fitting 220), but are not limited to this. The reinforcing metal fittings 100 and 200 may be made up of a single member, or may be made up of three or more members.

[0245] Furthermore, the configuration of the reinforcing metal fitting 100 is not limited to that described in each of the above embodiments. For example, the size and shape of the reinforcing metal fitting 100 and the reinforcing metal fitting 200 can be changed as appropriate. Furthermore, although the reinforcing metal fitting 100 and the reinforcing metal fitting 200 have been described as being formed by appropriately bending a single flat metal member, they are not limited to this form. [Explanation of symbols]

[0246] 1 Ceiling structure 30 Noenuke 40 Rough edge joint members 50 Rinkai 60 Ceiling surface material 70 Rafter brace 80 Rough edge joint brace 100 Reinforcement metal fittings

Claims

1. A joist that supports the ceiling material of the building from above, A siding support member that is suspended from the building frame and supports the siding from above via a clip member; A siding support member is fixed to the plurality of siding support members so as to intersect with each other in a plan view from above, and supports the siding through the plurality of siding support members; A plurality of braces are installed between the building frame and the joist support member and the joist joint member and are arranged in a cross shape in a plan view; A fixed reinforcing member used in a ceiling structure comprising: a ceiling material fixing portion to which the ceiling material is fixed; A siding support member fixing portion to which the siding support member is fixed; A furring strip joint fixing portion to which the furring strip joint member is fixed; a brace fixing portion to which the ends of the plurality of braces are fixed; and The ceiling material fixing portion is The ceiling material is divided into four areas based on the intersection in a plan view, and two areas are provided facing each other across the intersection, as a pair of the ceiling material. The plurality of braces are A pair of first braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, and a pair of second braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, The fixed reinforcing member is a first fixing reinforcing member to which the pair of first braces among the plurality of braces are respectively fixed via the brace fixing portion; a second fixing reinforcement member to which the pair of second braces among the plurality of braces are respectively fixed via the brace fixing portion and formed separately from the first fixing reinforcement member; It is composed of The first fixed reinforcing member is The ceiling material is fixed to two opposing areas of the four areas of the ceiling material, sandwiching the intersecting portion, via the ceiling material fixing portion, The second fixed reinforcing member is The first fixing reinforcement member is fixed to two of the four regions via the ceiling material fixing portion. Fixed reinforcement member.

2. The soffit receiving member fixing portion is The siding support member has a notch cut out at a position corresponding to a hanging member for hanging the siding support member from the frame. The fixed reinforcement member of claim 1 .

3. At least one of the first fixed reinforcing member and the second fixed reinforcing member is a first fixing portion fixed to the other of the first fixing reinforcing member and the second fixing reinforcing member; The fixed reinforcing member according to claim 1 or 2.

4. A joist that supports the ceiling material of a building from above; A siding support member that is suspended from the building frame and supports the siding from above via a clip member; A siding support member is fixed to the plurality of siding support members so as to intersect with each other in a plan view from above, and supports the siding through the plurality of siding support members; A plurality of braces are installed between the building frame and the joist support member and the joist joint member and are arranged in a cross shape in a plan view; A fixed reinforcing member used in a ceiling structure comprising: a ceiling material fixing portion to which the ceiling material is fixed; A siding support member fixing portion to which the siding support member is fixed; A furring strip joint fixing portion to which the furring strip joint member is fixed; a brace fixing portion to which the ends of the plurality of braces are fixed; and The ceiling material fixing portion is The ceiling material is divided into four areas based on the intersection in a plan view, and two areas are provided facing each other across the intersection, as a pair of the ceiling material. The plurality of braces are A pair of first braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, and a pair of second braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, The fixed reinforcing member is a third fixing reinforcing member to which one of the pair of first braces and one of the pair of second braces are respectively fixed via the brace fixing portion; a fourth fixing reinforcement member to which the other of the pair of first braces and the other of the pair of second braces are respectively fixed via the brace fixing portion, and which is formed separately from the third fixing reinforcement member; It is composed of The third fixed reinforcing member is The ceiling material is fixed to one of two regions facing each other across the intersecting portion via the ceiling material fixing portion, The fourth fixed reinforcing member includes: The third fixing reinforcement member is fixed to one of two regions facing each other across the intersecting portion via the ceiling material fixing portion, the third fixing reinforcement member being fixed to the other of the two regions facing each other across the intersecting portion. Fixed reinforcement member.

5. At least one of the third fixed reinforcing member and the fourth fixed reinforcing member is a second fixing portion fixed to the other of the third fixing reinforcing member and the fourth fixing reinforcing member; The fixed reinforcement member of claim 4 .

6. A joist that supports the ceiling material of a building from above; A siding support member that is suspended from the building frame and supports the siding from above via a clip member; A siding support member is fixed to the plurality of siding support members so as to intersect with each other in a plan view from above, and supports the siding through the plurality of siding support members; A plurality of braces are installed between the building frame and the joist support member and the joist joint member and are arranged in a cross shape in a plan view; A fixed reinforcing member; A ceiling structure comprising: The fixed reinforcing member is a ceiling material fixing portion to which the ceiling material is fixed; A siding support member fixing portion to which the siding support member is fixed; A furring strip joint fixing portion to which the furring strip joint member is fixed; a brace fixing portion to which the ends of the plurality of braces are fixed; and The ceiling material fixing portion is The ceiling material is divided into four areas based on the intersection in a plan view, and two areas are provided facing each other across the intersection, as a pair of the ceiling material. The plurality of braces are A pair of first braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, and a pair of second braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, The fixed reinforcing member is a first fixing reinforcing member to which the pair of first braces among the plurality of braces are respectively fixed via the brace fixing portion; a second fixing reinforcement member to which the pair of second braces among the plurality of braces are respectively fixed via the brace fixing portion and formed separately from the first fixing reinforcement member; It is composed of The first fixed reinforcing member is The ceiling material is fixed to two opposing areas of the four areas of the ceiling material, sandwiching the intersecting portion, via the ceiling material fixing portion, The second fixed reinforcing member is The first fixing reinforcement member is fixed to two of the four regions via the ceiling material fixing portion. Ceiling structure.

7. A joist that supports the ceiling material of a building from above; A siding support member that is suspended from the building frame and supports the siding from above via a clip member; A siding support member is fixed to the plurality of siding support members so as to intersect with each other in a plan view from above, and supports the siding through the plurality of siding support members; A plurality of braces are installed between the building frame and the joist support member and the joist joint member and are arranged in a cross shape in a plan view; A fixed reinforcing member; A ceiling structure comprising: The fixed reinforcing member is a ceiling material fixing portion to which the ceiling material is fixed; A siding support member fixing portion to which the siding support member is fixed; A furring strip joint fixing portion to which the furring strip joint member is fixed; a brace fixing portion to which the ends of the plurality of braces are fixed; and The ceiling material fixing portion is The ceiling material is divided into four areas based on the intersection in a plan view, and two areas are provided facing each other across the intersection, as a pair of the ceiling material. The plurality of braces are A pair of first braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, and a pair of second braces are arranged in a plan view such that the direction in which they are spaced apart from each other is parallel to the joist support member, The fixed reinforcing member is a third fixing reinforcing member to which one of the pair of first braces and one of the pair of second braces are respectively fixed via the brace fixing portion; a fourth fixing reinforcement member to which the other of the pair of first braces and the other of the pair of second braces are respectively fixed via the brace fixing portion, and which is formed separately from the third fixing reinforcement member; It is composed of The third fixed reinforcing member is The ceiling material is fixed to one of two regions facing each other across the intersecting portion via the ceiling material fixing portion, The fourth fixed reinforcing member includes: The third fixing reinforcement member is fixed to one of two regions facing each other across the intersecting portion via the ceiling material fixing portion, the third fixing reinforcement member being fixed to the other of the two regions facing each other across the intersecting portion. Ceiling structure.

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