Ceiling joist connection metal fitting for ceiling substrate

Abstract

To provide a ceiling joist metal fitting for a ceiling substrate, which attaches a ceiling joist for a ceiling plate attaching to a prescribed structure material of a building side and which is free in adjustment of a ceiling joist attaching height and high in rigidity and earthquake-resistant strength after attaching.SOLUTION: This ceiling joist metal fitting for attaching a ceiling joist for ceiling plate attaching to a prescribed structure material of a building side comprises: a fixed side metal filling of a U shape in section fixed to the prescribed structure material of the building side; and a movable side metal fitting of a U shape in section fitted so as to be vertically slidable with respect to the fixed side metal fitting. A long hole for adjusting attaching height, which vertically extends is provided on one side of the movable side metal fitting and the fixed side metal fitting, and temporary fixing means slidably engaged with the long hole for adjusting attaching height to temporarily fix the metal fitting is provided on the other side. After adjustment of the vertical position of the movable side metal fitting with respect to the fixed side metal fitting, by fixing the movable side metal fitting to the fixed side metal fitting, the ceiling joist for ceiling plate attaching can be horizontally attached irrespective of the horizontal state of the prescribed structure material of the building side.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the configuration of a ceiling underlayment siding connecting fitting that directly attaches a ceiling-side siding to a specified structural member fixed to a building structural frame. [Background technology]

[0002] A ceiling frame suspension structure (so-called suspended ceiling) in which a conventional ceiling frame is suspended via ceiling frame suspension members suspended from the building structure (such as the upper floor floor slab) is well known.

[0003] A conventional ceiling frame consists of, for example, multiple rafters made of channel steel and multiple rafter supports, also made of channel steel, to which the rafters are attached.The rafters and rafter supports are arranged in a lattice pattern, and the intersecting parts of the rafters and rafter supports are connected to each other at the top and bottom with specified clip fittings to form a single unit.

[0004] On the other hand, a plurality of suspension bolts are used as the ceiling frame suspension materials for suspending such ceiling frames. Each of the plurality of suspension bolts is made of a rod member of a predetermined length, and at its upper end is provided an engagement member that engages with the building structure (such as the upper floor floor slab), and at its lower end is provided a hanger member that engages with the ceiling frame side joist support. These are then used to suspend the ceiling frame by engaging the upper end of the suspension bolt with the building structure (such as the upper floor floor slab) and the lower end with the ceiling frame side joist support (see, for example, the configuration of Patent Document 1).

[0005] However, in the case of a suspended ceiling type ceiling substructure in which the ceiling frame is suspended from the building structure (such as the upper floor floor slab) using such rod-axis structure suspension bolts and hanger structure suspension fittings, the strength of the suspension bolts themselves and the connection strength between the suspension bolts and the joist supports are low, resulting in a lack of earthquake resistance when the ceiling frame is suspended.

[0006] The exciting forces during an earthquake include vertical vibrations caused by vertical shaking, and horizontal vibrations (towards the ceiling surface) caused by horizontal shaking, and in reality, these vibrations are combined in a more complex manner. Therefore, the suspension bolts and upper and lower mounting brackets are subjected to horizontal loads in addition to vertical loads, and are required to have sufficient seismic resistance to withstand loads in both directions.

[0007] However, a suspension bolt with a rod shaft structure alone or a mounting bracket with a hanger structure cannot meet such requirements, and there is a risk that the suspension bolt portion will bend or the hanger portion will become disengaged.

[0008] Therefore, in order to cope with lateral shaking (swaying in the direction of the ceiling surface), this structure required the installation of horizontal members perpendicular to the joist support, bracing members that diagonally connect the horizontal members to the hanging bolts, and measures to secure the hanger parts, which increased the number of components and made the structure more complex.However, even with this, it was not possible to achieve sufficient earthquake resistance strength.

[0009] In light of these circumstances, recently, in order to solve such problems, semi-structural ceiling underlayment structures have been proposed in which, without using hanging bolts with a rod shaft structure, mounting hardware with hook structures and hanger structures, siding supports, etc., specified structural materials such as lip channel steel fixed horizontally to the building's structural body are used as supporting materials, and siding is attached directly to the specified structural material (supporting structural material) via siding mounting hardware, and ceiling panels are attached to the siding (see, for example, the configuration in Patent Document 2).

[0010] With this type of ceiling underlayment structure, the structural materials, such as lip channel steel, which serve as support for the joists, are fixed to the building's structural frame, so that the structural materials have roughly the same strength as the building's structural frame, greatly improving their strength as support materials for the ceiling panels. Therefore, with this configuration, there is no need to install braces or other materials to improve the strength and earthquake resistance of the structural materials.

[0011] The rafters are then directly attached to these high-strength structural materials via rafter mounting brackets. Therefore, the ceiling substructure, consisting of the structural materials and the rafters attached to the structural materials via rafter mounting brackets, is integrated into the structural frame of the building as a quasi-structural structure (capable of following the movement of the structural frame during an earthquake). As a result, it is possible to prevent the amplification of vibrations on the ceiling surface, as in the conventional suspended ceilings, and to realize a quasi-structural earthquake-resistant ceiling that does not fall under the regulations for specific ceilings.

[0012] In this case, the specified structural materials such as lip channel steel fixed to the building structural body are fixed as horizontally as possible to the building structural body, and are installed so that the ceiling panels that will ultimately be attached to the joists are installed horizontally.

[0013] However, in reality, there is a considerable error (variation) in the horizontal level of the specified structural materials fixed to the building's structural body, and it is necessary to adjust the height when installing the furring strip using the furring strip mounting brackets.

[0014] Therefore, in the configuration of Patent Document 2, the above-mentioned siding mounting bracket is configured as two sets of mounting brackets, with the main body (trunk body) fixed (wrapped and fixed) to a predetermined structural material on the building side engaging with a fixed side bracket with a U-shaped cross section so as to be able to slide up and down relative to the fixed side bracket, and the main body (trunk body) to which the siding is attached at the lower end side is configured as a movable side bracket with a U-shaped cross section, and the main body parts (trunk board parts) of the two sets of mounting brackets are hooked via the hook groove of the side wall part (receiving piece) of the fixed side bracket and the ear piece of the side wall part (guide piece) of the movable side bracket so as to be able to slide in a mutually overlapping state, and further overlapped. The main body part (trunk board part) of the movable side fitting is provided with screw holes of vertical dimensions corresponding to the vertical dimensions of the hanging groove in the side wall part of the fixed side fitting, and screw support holes (pre-holes) are provided at positions corresponding to the same screw holes in the fixed side fitting, and the height of the joist attached to the movable side fitting is adjusted in a relatively slidable temporary fastening state via the hanging groove in the side wall part (receiving piece) of the fixed side fitting, the ear piece of the side wall part (guide piece) of the movable side fitting, the screw hole in the main body part (trunk board part) of the movable side fitting, and the screw in the main body part (trunk board part) of the fixed side fitting.The joist is then attached to a specified structural material fixed to the building structural body.

[0015] Therefore, with this configuration, the engagement between the hook groove on the side wall of the fixed bracket (receiving piece) and the lug on the side wall of the movable bracket (guide piece) and the engagement between the screw hole on the main body of the movable bracket (trunk board) and the screw on the main body of the fixed bracket (trunk board) allow the movable bracket, with the rafter attached to its lower end, to be raised and lowered while securely fastened temporarily to the fixed bracket, which is fixed to a specified structural material on the building side, to adjust the installation height of the rafter to which the ceiling board is attached.This makes height adjustment work easier when installing the rafter. [Prior art documents] [Patent documents]

[0016] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-50784 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-141597 Summary of the Invention [Problem to be solved by the invention]

[0017] In the case of the siding mounting bracket of Patent Document 2, the siding mounting bracket consists of a fixed-side bracket that is wrapped around and fixed to a specified structural material (lip channel steel) on the building side, and a movable-side bracket that is slidably attached to the fixed-side bracket, and the mounting height of the siding is adjusted by raising and lowering the movable-side bracket up and down relative to the fixed-side bracket and changing the overlap dimension (overlap dimension). Then, after adjusting the mounting height of the siding, the brackets are fastened together with screws at the overlap dimension (overlap dimension).

[0018] Therefore, with this configuration, the horizontal (ceiling surface) rigidity and seismic strength of the siding mounting bracket after the fixed side bracket and movable side bracket are integrated are not constant; if the installation error of the structural material specified on the building side is small and the adjustment dimension for the siding mounting height is small, the overlap dimension (overlapping dimension) of the fixed side bracket and the movable side bracket is large and the vertical dimension of the siding mounting bracket itself is short, so the horizontal (ceiling surface) rigidity and seismic strength are high; on the other hand, if the installation error of the structural material specified on the building side is large and the adjustment dimension for the siding mounting height is large, the overlap dimension (overlapping dimension) of the fixed side bracket and the movable side bracket is small and the vertical dimension of the siding mounting bracket itself becomes long, so the horizontal (ceiling surface) rigidity and seismic strength are low.

[0019] In the case of the siding mounting bracket of Patent Document 2, the main body portions (trunk portions) that overlap with each other on both the fixed and movable brackets are formed with a U-shaped cross section and are equipped with a pair of side walls (receiving pieces, guide pieces) on both the left and right sides, but the width of these side walls (receiving pieces, guide pieces) is narrow and they basically only function as receiving pieces when overlapping and as guide pieces when sliding, and do not contribute much to increasing the rigidity of the main body portions (trunk portions) that overlap with each other. In particular, the side wall portion (receiving piece) of the fixed bracket has a lug guide groove and a hook groove cut deeply into its middle, and the side wall portion (guide piece) of the movable bracket has a lug at its upper end, and in light of these points, it is not possible to expect an increase in the rigidity of the main body portions (trunk portions).

[0020] As is clear from these descriptions, the overlapping main body portions (trunk portions) of the fixed and movable brackets in the rafter mounting brackets of Patent Document 2 are essentially vertically elongated flat plate structures. Furthermore, the open sides of the side walls are not opposed to each other; rather, the flat main body portions (trunk portions) are simply slidably overlapped to form a double-wall structure. Therefore, even though the rear web wall of the lip channel steel, a structural material required for the building, is used as the mounting surface, the horizontal rigidity (toward the ceiling surface) of the rafter mounting brackets is low. Furthermore, as the rafter mounting height adjustment dimension becomes large and the vertical dimension of the rafter mounting bracket itself increases, its horizontal rigidity (toward the ceiling surface) and seismic strength further decrease. For this reason, it cannot be said that the rafter mounting brackets have sufficient seismic strength to serve as a ceiling substructure for a semi-structural earthquake-resistant ceiling.

[0021] Furthermore, in the case of the siding mounting bracket described in Patent Document 2, the vertical dimensions of the hook grooves in the fixed-side bracket sidewall (receiving piece), which engage the lugs of the movable-side bracket sidewall (guide piece) for vertical sliding, and the vertical dimensions of the screw holes in the movable-side bracket main body (trunk portion), which engage the screws supported by the fixed-side bracket for vertical sliding, are limited to a small range—a fraction of the overall length of the overlapping fixed-side bracket and movable-side bracket main body (trunk portion). This makes it difficult to adjust the mounting height. While it is possible to intentionally increase the vertical dimensions of the hook grooves in the fixed-side bracket sidewall (receiving piece) and the screw holes in the movable-side bracket main body (trunk portion), doing so would reduce the strength of the hook grooves in the fixed-side bracket sidewall (receiving piece) and the movable-side bracket main body (trunk portion), making it impossible to maintain stable mounting of the movable-side bracket to the fixed-side bracket. As a result, the rigidity and seismic strength of the siding mounting bracket would be further reduced.

[0022] Therefore, the configuration of the rough siding mounting fittings in Patent Document 2 above cannot adjust mounting errors of a certain level or more for a specified structural material fixed to the building's structural frame, and there is naturally a limit to the mounting height adjustment function.

[0023] Furthermore, in the case of the siding mounting bracket of Patent Document 2, due to its structure, the mounting of the fixed side bracket main body (trunk plate) is limited to the back web side of the lip channel steel, which is the structural material, and it cannot be mounted on the lip side. Therefore, there is a drawback in that the degree of freedom of mounting is low.

[0024] The present invention has been made to solve the problems of the conventional examples, and aims to provide a ceiling underlayment mounting bracket that directly attaches ceiling panel mounting brackets to specified structural materials on the building side, and that allows for free adjustment of the mounting height of the ceiling underlayment, and has sufficiently high rigidity and earthquake resistance after installation regardless of the adjustment dimension of the mounting height of the ceiling underlayment, making it suitable for constructing a semi-structural earthquake-resistant ceiling. [Means for solving the problem]

[0025] In order to solve the above problems, the ceiling underlayment mounting fixtures of claims 1 to 8 of the present application are each configured with the following problem-solving means.

[0026] (1) Means for solving the problem of the invention of claim 1 of the present application First, the ceiling underlayment mounting bracket of the invention of claim 1 is a ceiling underlayment mounting bracket that directly mounts a ceiling board mounting bracket to a predetermined structural material on the building side that is supported in a horizontal position by being fixed directly or indirectly to the structural frame of the building side, The above-mentioned siding mounting bracket is a fixed-side bracket with a U-shaped cross section and a predetermined length in the vertical direction, which has side plate portions on the back plate portion and both sides of the front side of the back plate portion, and the back plate portion is fixed perpendicular to the wall surface of the predetermined structural material of the building side, and a movable-side bracket with a U-shaped cross section and a predetermined length in the vertical direction, which has side plate portions on the back plate portion and both sides of the front side of the back plate portion, and the side plate portions are fitted so that they can slide in the vertical direction while facing the side plate portions of the fixed-side bracket, and the siding mounting bracket is on the lower end of the back plate portion, A vertically extending elongated hole for adjusting the mounting height of the siding is provided in one of the side plate portions of the movable side fitting or the fixed side fitting, while the other side plate is provided with a temporary fastening means for temporarily fastening the movable side fitting to the fixed side fitting by slidably engaging with the elongated hole for adjusting the mounting height of the siding. After adjusting the vertical position of the movable-side fitting relative to the fixed-side fitting fixed to a predetermined structural material on the building side, the movable-side fitting is fixed to the fixed-side fitting with a predetermined screwing means, Regardless of the horizontal state of the predetermined structural material on the building side, the ceiling board mounting joist can be mounted horizontally to the predetermined structural material on the building side.

[0027] In this configuration, the structural material on the building side that serves as the support for the joist is fixed to the structural frame of the building, so the structural material has almost the same strength as the structural frame of the building, greatly improving its strength as a supporting structural material for the ceiling panels. Therefore, with this configuration, there is no need to install braces or other materials to improve the strength and earthquake resistance of the structural material.

[0028] The rafters are then attached directly to these high-strength structural members of the building using rafter mounting brackets. Therefore, the ceiling substructure, consisting of the structural members and the rafters attached to the structural members via rafter mounting brackets, is integrated into the structural frame of the building as a quasi-structure (capable of following the movement of the structural frame during an earthquake). This prevents the amplification of vibrations on the ceiling surface, as occurs with conventional suspended ceilings, and allows for the realization of a highly earthquake-resistant quasi-structural earthquake-resistant ceiling that does not fall under the regulations for specific ceilings.

[0029] In this case, the specified structural materials fixed to the building structural body are fixed as horizontally as possible to the building structural body, and are constructed so that the ceiling panels that will ultimately be attached to the joists are installed horizontally.

[0030] However, in reality, there is a considerable error (variation) in the horizontal level of the specified structural materials fixed to the building's structural body, and it is necessary to adjust the height when installing the furring strip using the furring strip mounting brackets.

[0031] Therefore, in the configuration of the ceiling underlayment mounting bracket of the invention of claim 1, the bracket is configured with a fixed-side bracket having a U-shaped cross section with a predetermined length in the vertical direction, which has side panels on both sides of the back panel and the front side of the back panel, and the back panel is fixed perpendicular to the wall surface of the predetermined structural material of the building, and a movable-side bracket having a U-shaped cross section with a predetermined length in the vertical direction and a bracket on the lower end of the back panel, which has side panels on both sides of the back panel and the front side of the back panel, and the side panels are fitted so as to be slidable in the vertical direction in a state facing the side panels of the fixed-side bracket, and One of the side panels is provided with a long hole of a predetermined length extending in the vertical direction for adjusting the mounting height of the siding, while the other side panel is provided with a temporary fastening means that slidably engages with the long hole for adjusting the mounting height of the siding and temporarily fastens the movable side fitting to the fixed side fitting, and after adjusting the vertical position of the movable side fitting relative to the fixed side fitting fixed to the specified structural material of the building, the movable side fitting is fastened to the fixed side fitting with a predetermined screwing means, so that the siding for mounting the ceiling panel can be mounted horizontally to the specified structural material of the building, regardless of the horizontal state of the specified structural material of the building.

[0032] In this configuration, the siding mounting bracket for mounting the siding has side panels on the back panel and both sides of the front side of the back panel, and the back panel is fixed perpendicular to the wall surface of the specified structural material on the building side. It is composed of a fixed-side bracket with a U-shaped cross section and a predetermined length in the vertical direction, and side panels on the back panel and both sides of the front side of the back panel, and the side panels are fitted so that they can slide up and down in a state facing the side panels of the fixed-side bracket. It is composed of a movable-side bracket with a U-shaped cross section and a siding mounting part on the lower end of the back panel. The fixed-side bracket and movable-side bracket, each with a U-shaped cross section, are fitted together with their open sides facing each other, so that a completely closed cross-sectional structure is formed at the fitting portion of the fixed-side bracket and the movable-side bracket.

[0033] This closed cross-section structure has side panels on both sides of the fixed bracket and the movable bracket overlapping on both the left and right sides, so that while the front and back sides each have a single wall (together they are double walls), the left and right sides each have a strong double wall (together they are four-walls).Furthermore, since each of these double wall sections is ultimately fastened together with screws, the rigidity and seismic strength in the horizontal direction (towards the ceiling surface) are far greater than the configuration of the main body overlapping section (trunk plate overlapping section) of the conventional example described above, regardless of the size of the installation error of the structural materials specified on the building side (the size of the length of the fitting section).

[0034] In addition, one of the side plates of either the movable or fixed bracket has a vertically extending elongated hole for adjusting the mounting height of the siding, while the other side plate of the fixed or movable bracket has a temporary fastening means that slidably engages with the elongated hole for adjusting the mounting height of the siding, and the movable bracket is temporarily fastened in the front-to-rear direction by the temporary fastening means in a state where it can slide relative to the fixed bracket, making it easy to adjust the mounting height of the siding. Since the temporary fastening is also performed at a distance on both the left and right sides, a more stable temporary fastening state can be maintained.

[0035] In addition, the elongated holes for adjusting the mounting height of the sill and the temporary fastening means that slidably engage with the elongated holes are provided on the side panel of either the fixed side fitting or the movable side fitting, respectively, so that free installation is possible, unlike in the conventional example where screw holes and screws are provided perpendicular to the main body part of the fixed side fitting or the movable side fitting that is aligned with the mounting surface of a specified structural material on the building side.

[0036] Furthermore, since the elongated holes for adjusting the furring strip mounting height can be formed using the entire vertical length of the fixed or movable bracket side plate, the adjustment dimension for the furring strip mounting height can be set to a sufficiently large value that corresponds to the maximum anticipated mounting error of the specified building structural material, thereby fully accommodating anticipated mounting errors.

[0037] In addition, in this configuration, if the sill is slidably engaged with the sill mounting portion provided on the lower end side of the movable side metal fitting back plate portion, it becomes possible to adjust the sill height as well as the mounting position of the sill in the longitudinal direction.

[0038] (2) Means for solving the problem of the invention of claim 2 of the present application Next, in the ceiling underlayment mounting bracket of the invention of claim 2 of the present application, in the configuration of the ceiling underlayment mounting bracket of the invention of claim 1, The temporary fastening means for temporarily fastening the movable side fitting to the fixed side fitting by slidably engaging with the elongated hole for adjusting the mounting height of the siding comprises a temporary fastening bolt of a predetermined length and a temporary fastening nut corresponding to the temporary fastening bolt, The temporary fixing bolt is passed through an elongated hole for adjusting the sill mounting height in one of the side plate portions of the movable side fitting or the fixed side fitting, and then passed through a temporary fixing bolt insertion hole provided in the side plate portion of the other side fitting, A temporary fastening nut is screwed onto the outer end of the connector to temporarily fasten it in place.

[0039] In this configuration, a temporary fastening bolt of a predetermined length and a corresponding temporary fastening nut are used, and the temporary fastening bolt is passed through an elongated hole for adjusting the siding installation height in either the side plate of the movable or fixed metal fitting, and then through a temporary fastening bolt insertion hole in the side plate of the other metal fitting, and the temporary fastening nut is screwed onto the outer end of the bolt, thereby making it possible to temporarily fasten the movable metal fitting in a more accurate and stable state, thereby facilitating the installation of the siding.

[0040] (3) Means for solving the problem of the invention of claim 3 of the present application Next, in the ceiling underlayment cladding fixture of the invention of claim 3 of the present application, in the configuration of the ceiling underlayment cladding fixture of the invention of claim 1, The temporary fastening means for temporarily fastening the movable-side fitting to the fixed-side fitting by slidably engaging with the elongated hole for adjusting the furring strip mounting height is comprised of a protrusion provided at a position corresponding to the elongated hole for adjusting the furring strip mounting height on the side plate portion of the movable-side fitting or the fixed-side fitting that does not have an elongated hole for adjusting the furring strip mounting height, The protrusion is temporarily fastened by engaging it with a long hole for adjusting the siding installation height in the side plate portion of the other metal fitting, which has a long hole for adjusting the siding installation height.

[0041] In this configuration, the convex portion provided at a position corresponding to the long hole for adjusting the soffit mounting height on the side plate portion of the movable side fitting or fixed side fitting, which does not have a long hole for adjusting the soffit mounting height, moves up and down while engaged with the long hole for adjusting the soffit mounting height provided on the side plate portion of the other fixed side fitting or movable side fitting, and the mounting height of the soffit attached to the movable side fitting can be freely adjusted while the movable side fitting is temporarily fastened to the fixed side fitting.

[0042] Therefore, just as with the temporary fastening bolts and the temporary fastening nuts corresponding to the temporary fastening bolts in the means for solving the problems of the invention of claim 2, the rough siding attached to the movable metal fitting can be installed at an appropriate height position with the movable metal fitting and the rough siding temporarily fastened to the fixed metal fitting, thereby facilitating the installation work of the rough siding.

[0043] In particular, with this configuration, there is no need for temporary fastening bolts and corresponding temporary fastening nuts as in the problem-solving means of the invention of claim 2 above, so the number of parts and construction labor are reduced, resulting in lower costs.

[0044] The convex portion provided at a position corresponding to the long hole for adjusting the furring strip mounting height on the side plate portion of the movable side fitting or fixed side fitting that does not have the long hole for adjusting the furring strip mounting height can be realized extremely easily, for example, by doweling, burring, or a leaf spring structure made by bending.

[0045] In these cases, the engagement of the protrusions provided at positions corresponding to the oblong holes for adjusting the furring strip mounting height on the side plate of the movable or fixed fitting that does not have oblong holes for adjusting the furring strip mounting height with the oblong holes for adjusting the furring strip mounting height provided on the side plate of the other fixed or movable fitting is achieved, for example, by forcibly fitting the left and right side plate portions of the movable or fixed fitting into each other. Therefore, in the fitted state, the two engage with a predetermined pressing force acting on each other, allowing them to slide, while also exerting the necessary locking force according to the weight of the furring strip being supported.

[0046] (4) Means for solving the problem of the invention of claim 4 of the present application Next, in the ceiling underlayment cladding fixture of the invention of claim 4 of the present application, in the configuration of the ceiling underlayment cladding fixture of the invention of claim 1, 2 or 3, The lower end of the back plate of the movable metal fitting has a width corresponding to the dimension between the flanges of the flange consisting of the web and flange, and at both ends thereof, first and second flange mounting pieces of a predetermined length and a predetermined height are provided which are bent at right angles in opposite directions to each other. The first and second sill mounting pieces extending in opposite directions are inserted between the flanges at the sill opening, tilted at a predetermined angle horizontally along the sill longitudinal direction, and rotated so that the sill mounting parts are perpendicular to the sill within the sill. The first and second sill mounting pieces are overlapped with the inner wall of the flange portion of the sill, and the sill is attached by screwing a predetermined screwing means from the outside in this overlapped state.

[0047] In this configuration, the first and second sill mounting pieces extending in opposite directions are inserted between the flange portions in the sill opening, at a predetermined angle inclined horizontally along the sill longitudinal direction, and then simply rotated so that the sill mounting portions are perpendicular to the sill within the sill, causing the first and second sill mounting pieces to overlap with the inner walls of the flange portions of the sill, and the sill can be attached by screwing in a predetermined screwing means from the outside in this overlapping state, making it easy to attach the sill to the movable side fittings and at the same time allowing the sill to be attached securely and firmly to the movable side fittings.

[0048] In this configuration, before the specified screwing means is screwed, the siding can slide relative to the first and second siding mounting pieces. Therefore, the mounting position of the siding can be adjusted in the longitudinal direction, and the siding can be attached to the siding mounting bracket after appropriately adjusting the mounting position in the longitudinal direction. As a result, the siding can be better attached to the specified structural material on the building side.

[0049] (5) Means for solving the problem of the invention of claim 5 of the present application Next, in the ceiling underlayment cladding fixture of the invention of claim 5 of the present application, in the configuration of the ceiling underlayment cladding fixture of the invention of claim 4, The first or second furring strip has a tip end portion that protrudes higher than the upper end of the flange portion of the furring strip, The protrusion is configured to overlap the first and second sill mounting pieces with the inner wall of the flange portion of the sill, and to serve as a marker for determining the screwing position when screwing a specified screwing means from the outside of the flange portion toward the first and second sill mounting pieces in this overlapped state.

[0050] In this configuration, the first and second sill mounting pieces are overlapped with the inner wall of the flange portion of the sill, using the protruding portion that protrudes higher above the upper end of the flange portion of the sill at the tip side of the first or second sill mounting piece as a landmark, and in this overlapped state, a specified screwing means is screwed from the outside of the flange portion toward the first and second sill mounting pieces, making it easy to install and fix the sill.

[0051] (6) Means for solving the problem of the invention of claim 6 of the present application Next, in the ceiling underlayment cladding fixture of the invention of claim 6 of the present application, in the configuration of the ceiling underlayment cladding fixture of the invention of claim 1, 2, 3, 4 or 5, The fixed metal fitting has fitting pieces at both the top and bottom ends of the rear side of the back plate portion that fit onto both the top and bottom surfaces of a specified structural material on the building side.

[0052] With this configuration, when fixing the fixed-side bracket to the specified building structural material, simply by fitting the upper and lower fitting pieces on the back panel to the upper and lower surfaces of the specified building structural material, the back panel can be properly abutted against the mounting surface of the specified building structural material, making the fixing work to the specified building structural material easy. Therefore, there is no need to mark reference lines on the mounting part of the rough frame bracket on the specified building structural material, as in the conventional example.

[0053] Furthermore, if fitting pieces that fit onto both the upper and lower surfaces of a specified structural material on the building side are provided on both the upper and lower ends of the back side of the back panel portion of the fixed side metal fitting, it can also effectively respond to vertical loads during earthquakes.

[0054] (7) Means for solving the problem of the invention of claim 7 of the present application Next, in the ceiling underlayment siding mounting bracket of the invention of claim 7 of the present application, in the configuration of the ceiling underlayment siding mounting bracket of the invention of claim 1, 2, 3, 4, 5 or 6, The specified structural material on the building side is made of lip channel steel, and the back plate portion of the fixed side fitting is attached and fixed to the upper and lower lip portions or web portions of the lip channel steel.

[0055] In the case of the means for solving the problems of the invention of claim 1, 2, 3, 4, 5 or 6, by selecting an appropriate structural material having the same strength as the building's structural frame as the specified structural material on the building side to which the joists are attached, it is possible to construct a semi-structural ceiling underlayment with a sufficiently high strength that is integrated with the building's structural frame. And, for example, lip channel steel consisting of a web portion, a flange portion and a lip portion can be used as such a specified structural material on the building side with high strength.

[0056] When such lip channel steel is used as the designated structural material on the building side to which the rough joist is attached, the configuration and function of the problem-solving means of the invention of claim 1, 2, 3, 4, 5 or 6 can be properly realized by attaching the back plate portion of the fixed side fittings in the problem-solving means of the invention of claim 1, 2, 3, 4, 5 or 6 to the upper and lower lip portions or web portion of the same lip channel steel.

[0057] (8) Means for solving the problem of the invention of claim 8 of the present application Next, in the ceiling underlayment cladding fixture of the invention of claim 8 of the present application, in the configuration of the ceiling underlayment cladding fixture of the invention of claim 1, 2, 3, 45 or 6, The specified structural material on the building side is made of a square steel pipe, and the back plate portion of the fixed side fitting is attached and fixed to the vertical wall portion of the same square steel pipe.

[0058] In the case of the solution to the problems of the invention of claim 1, 2, 3, 4, 5 or 6, by selecting an appropriate structural material having the same strength as the building's structural frame as the structural material on the building side to which the joists are attached, it is possible to construct a semi-structural ceiling substrate with sufficient strength that is integrated with the building's structural frame.And, for example, square steel pipes can be used as the structural material on the building side with such high strength.

[0059] When such a square steel pipe is used as the designated structural material on the building side to which a rough joist is attached, the configuration and function of the problem-solving means of the invention of claim 1, 2, 3, 4, 5 or 6 can be properly realized by attaching the back plate portion of the fixed side fitting in the problem-solving means of the invention of claim 1, 2, 3, 4, 5 or 6 to the vertical wall portion of the same square steel pipe. [Effects of the Invention]

[0060] As a result of the above, the ceiling underlayment mounting bracket of the present invention is a ceiling underlayment mounting bracket that directly mounts a ceiling panel mounting bracket to a specified structural material on the building side that is high in strength and fixed to the building's structural frame, and it is possible to provide a ceiling underlayment mounting bracket that is suitable for constructing a semi-structural earthquake-resistant ceiling, which allows for free adjustment of the mounting height of the bracket and has sufficiently high rigidity and earthquake resistance strength after the mounting part has been installed regardless of the adjustment dimension of the mounting height of the bracket.

[0061] Moreover, its structure is simple, does not require many parts or components, and it also has a function to temporarily fasten the siding when installing it, making installation easy.

[0062] In addition, lip channel steel or square steel pipes can be freely selected as the structural material for the building to which the joists are attached, and there are no restrictions on the mounting surface, making the installation process easy. [Brief explanation of the drawings]

[0063] [Figure 1] 1 is a perspective view showing the structure of a semi-structural earthquake-resistant ceiling substructure constructed using ceiling substructure siding mounting brackets according to an embodiment of the present invention. FIG. [Figure 2] FIG. 10 is a perspective view showing the mounting structure of the ceiling-side rough joist to a predetermined structural material (lip channel steel) on the building side using rough joist mounting brackets in the earthquake-resistant ceiling base. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] 4 is a cross-sectional view of the sill mounting structure taken along line AA in FIG. 3. [Figure 6] FIG. [Figure 7] FIG. 2 is an exploded perspective view showing the configuration of the fixed-side fitting and the movable-side fitting in the frame mounting structure before they are fitted together. [Figure 8]10 is a perspective view showing the configuration of the fixed metal fitting in the frame mounting structure, viewed from diagonally above the left. FIG. [Figure 9] FIG. 10 is a right side view showing the configuration of the fixed-side fitting in the frame mounting structure. [Figure 10] 10 is a perspective view showing the configuration of the movable metal fitting in the frame mounting structure, as viewed from diagonally below on the left side. FIG. [Figure 11] 10 is a perspective view showing the configuration of the movable metal fitting in the frame mounting structure, viewed from diagonally above the left. FIG. [Figure 12] FIG. 10 is a top view showing the configuration of the movable metal fitting in the frame mounting structure. [Figure 13] FIG. 10 is a bottom view showing the configuration of the movable metal fitting in the frame mounting structure. [Figure 14] This figure shows the configuration and operation of the siding mounting bracket of this embodiment, which can appropriately adjust the mounting height of the siding in accordance with the differences (a) to (c) in the mounting height of the lip channel steel, which is the designated structural material on the building side to which the siding is attached, in the same siding mounting structure when there are three levels of difference (error) from (a: minimum) to (b: medium) to (c: maximum). [Figure 15] In the same siding mounting structure, (a) shows the bolt insertion state in which the movable side bracket, which has the siding engaged and supported at the lower end siding mounting portion, is fitted to the fixed side bracket fixed to the lip channel steel, which is a specified structural material for the building, and is about to be temporarily fastened using a temporary fastening means consisting of a bolt and nut; after the bolt has been inserted, the movable side bracket is engaged with the fixed side bracket, which has a nut loosely screwed onto its outer end, and the movable side bracket is raised and lowered to adjust the mounting height of the siding, and the siding engaged with the siding mounting portion at the lower end of the movable side bracket is slid longitudinally to adjust the mounting position of the siding relative to the siding mounting portion at the lower end of the movable side bracket; and (c) shows the explanatory oblique view after the adjustment of the siding mounting height and the adjustment of the siding mounting position relative to the siding mounting portion at the lower end of the movable side bracket have been completed, and drill screws are screwed into each set position to fix the movable side bracket to the fixed side bracket and attach the siding to the siding mounting portion. [Figure 16]This is a diagram (oblique view a, top view b, front view c) showing the first operating state (furring sill mounting portion insertion state) in which the furring sill mounting portion at the lower end of the movable side fitting is inserted into the furring sill mounting structure. [Figure 17] 16A and 16B are diagrams (oblique view a, top view b, front view c) showing a second operating state in which the sill mounting portion at the lower end of the movable fitting, which has been inserted into the sill after passing through the first operating state in FIG. 16, is rotated a predetermined angle in the horizontal direction to engage the sill mounting portion with the flange portions on both sides of the sill. [Figure 18] In the same sill mounting structure, the second operation in Figure 17 rotates the sill mounting portion of the lower end of the movable side fitting inserted into the sill by a predetermined angle in the horizontal direction, and finally the outer surfaces of the sill mounting pieces at both ends of the sill mounting portion are abutted against the inner surfaces of the flange portions on both sides of the sill, and the upper ends of the sill mounting pieces are engaged with the hook portions at the upper ends of the sill flange portions (oblique view a, top view b, front view c) showing a third operating state. [Figure 19] This is a front view showing the state in which the flange portion of the sill is screwed to the sill mounting pieces at both ends of the sill mounting portion of the movable metal fitting after the third operation of Figure 18 is completed in the same sill mounting structure. [Figure 20] This is a top view showing the state in which the flange portion of the sill is screwed to the sill mounting pieces at both ends of the sill mounting portion of the movable side fitting after the third operation of Figure 18 is completed in the same sill mounting structure. [Figure 21] This is a left side view showing the state in which the flange portion of the sill is screwed to the sill mounting pieces at both ends of the sill mounting portion of the movable metal fitting after the third operation of Figure 18 is completed in the same sill mounting structure. [Figure 22] This is a right side view showing the state in which the flange portion of the siding is screwed to the siding mounting pieces at both ends of the siding mounting portion of the movable metal fitting after the third operation of Figure 18 is completed in the same siding mounting structure. [Figure 23] This figure shows the configuration of variant 1 (a) in the same siding mounting structure, in which the fixed side bracket is fixed to the web surface side of the lip channel steel, and the configuration of variant 2 (b) in which a square steel pipe is used instead of the lip channel steel and the fixed side bracket is attached to the vertical wall surface of the square steel pipe. [Figure 24]This is an oblique view showing the cabling installation state in the configuration of variant 3, in which the fitting relationship (inside and outside relationship) between the fixed side fitting side plate on the lip channel steel side and the movable side fitting side plate on the cabling side is reversed in the same cabling installation structure. [Figure 25] This is an oblique view showing the configuration of the movable side fittings on the siding side in variant example 4, in which, in the siding mounting structure of Figure 24, instead of using bolts and nuts to temporarily fasten the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side, the movable side fittings on the siding side are temporarily fastened by a protrusion made by dowel processing provided at the bolt insertion hole position of the movable side fittings on the siding side. [Figure 26] This is a cross-sectional view showing the temporary fastening state of the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side in the configuration of variant 4, in which the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side are temporarily fastened by the convex portion formed by doweling processing in Figure 25 instead of the bolts and nuts that temporarily fasten the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side in the siding mounting structure of Figure 24 (cross-sectional view at the engagement position between the convex portion formed by doweling processing and the long hole for adjusting the siding mounting height). [Figure 27] This is an oblique view showing the configuration of the movable side fittings on the siding side in variant example 5, in which, in the siding mounting structure of Figure 24, instead of using bolts and nuts to temporarily fasten the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side, the movable side fittings on the siding side are temporarily fastened by a protrusion created by burring processing provided at the bolt insertion hole position of the movable side fittings on the siding side. [Figure 28] This is a cross-sectional view showing the temporary fastening state of the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side in the configuration of variant example 5, in which the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side are temporarily fastened using the convex portion formed by dowel processing in Figure 27 instead of the bolts and nuts that temporarily fasten the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side in the siding mounting structure of Figure 24 (cross-sectional view at the engagement position between the convex portion formed by burring processing and the long hole for adjusting the siding mounting height). [Figure 29] This is an oblique view showing the configuration of the movable side fittings on the siding side in variant 6, in which, in the siding mounting structure of Figure 24, instead of using bolts and nuts to temporarily fasten the movable side fittings on the siding side to the fixed side fittings on the lip channel steel side, the movable side fittings on the siding side are temporarily fastened by a convex portion formed by bending the plate spring portion provided at the bolt insertion hole position of the movable side fittings on the siding side. [Figure 30] This is a cross-sectional view showing the temporary fastening state of the movable side fitting on the siding side to the fixed side fitting on the lip channel steel side in the configuration of variant example 6, in which the movable side fitting on the siding side to the fixed side fitting on the lip channel steel side is temporarily fastened by the convex part formed by bending the leaf spring part in Figure 29 instead of the bolts and nuts that temporarily fasten the movable side fitting on the siding side to the fixed side fitting on the lip channel steel side in the siding mounting structure of Figure 24 (cross-sectional view at the engagement position between the convex part formed by bending the leaf spring part and the long hole for adjusting the siding mounting height). DETAILED DESCRIPTION OF THE INVENTION

[0064] Below, with reference to the attached Figures 1 to 30, we will explain in detail the form for implementing the configuration of the ceiling substructure furring strip mounting bracket related to the invention of this application, and the form for implementing a ceiling substructure structure in which furring strips are attached to a specified structural material on the building side using the same ceiling substructure furring strip mounting bracket.

[0065] First, FIG. 1 shows a ceiling underlayment structure in which a ceiling underlayment siding is attached to a predetermined structural material (supporting structural material) on the building side using a ceiling underlayment siding mounting bracket according to an embodiment of the invention of this application.

[0066] The ceiling substructure (ceiling structure) of Figure 1 is generally composed of structural materials 3, 3... on the building side, multiple rafters 1, 1... on the ceiling side, rafter mounting brackets 4, 4... that attach the multiple rafters 1, 1... on the ceiling side perpendicular to the structural materials 3, 3... on the building side, and ceiling panels 2 attached to the rafters 1, 1... that are attached to the structural materials 3, 3... on the building side via the rafter mounting brackets 4, 4...

[0067] The specific configuration of the predetermined structural members 3, 3·· on the building side, the plurality of ceiling joists 1, 1··, the joist mounting brackets 4, 4·, and the ceiling board 2 that make up the ceiling base structure will be described in detail below.

[0068] <About the composition of structural materials 3, 3... specified by the building> As shown in Figures 2 to 4, the building-side structural members 3, 3... are made up of lip channel steel with a backside web portion 3a, upper and lower flange portions 3b, 3b, and frontside upper and lower lip portions 3c, 3c. In this embodiment, the flange portions 3b, 3b have a width smaller than that of the web portion 3a and are set up vertically. The frontside lip portions 3c, 3c are basically configured as mounting surfaces for the joist mounting brackets 4, 4....

[0069] In this embodiment, the building-side structural members 3, 3... are not the building's structural frame itself, but are made of high-strength structural members having the same strength as the building's structural frame in order to form a highly earthquake-resistant semi-structural ceiling structure. One example of such structural members 3, 3... is a semi-structural member directly fixed to a ceiling mounting position using a support pillar or the like of the building's structural frame. Another example is a semi-structural member indirectly fixed to the building's structural frame, such as a lower horizontal reinforcement member of the ceiling base of a steel-frame grape trellis structure.

[0070] <About the composition of multiple nobori 1,1··> The multiple siding members 1, 1·· are made, for example, of standardized, general-purpose C-shaped steel, and are configured with a wide web portion 1a which serves as the mounting portion for the ceiling panel 2 described later, a pair of left and right flange portions 1b, 1b which serve as the mounting portions for the first and second siding mounting pieces 42B, 42C of the siding mounting brackets 4, 4·· which will be described later, and an inverted U-shaped hook portion (lip portion) 1c, 1c located at the upper ends of the pair of left and right flange portions 1b, 1b which serve as the engaging portions for the first and second siding mounting pieces 42B, 42C of the siding mounting brackets 4, 4··.

[0071] The web portion 1a, which forms the underside when attached to the structural members 3, 3... via the siding mounting brackets 4, 4..., has grooves of a predetermined width at both ends and in the center, improving the rigidity of the siding body. The undersides of these grooves form the mounting surfaces for the ceiling board 2, which will be described later. Meanwhile, the groove 1d located in the center is wider than the grooves at both ends, and serves as a support groove that engages and supports the lower-end protrusion 42E of the siding mounting portion 42A at the bottom of the movable bracket 42 of the siding mounting bracket 4, 4..., as will be described later.

[0072] <Configuration of the sill mounting brackets 4, 4··> As shown in Figures 6 and 7, the sill mounting brackets 4, 4... are composed of two sets of bracket materials: a fixed-side bracket 41 to which the entire structure (both upper and lower ends) of the structural material 3, 3... made of lip channel steel having the above-mentioned rear-side web portion 3a, upper and lower double-sided flange portions 3b, 3b, and front-side upper and lower lip portions 3c, 3c, and a movable-side bracket 42 that is slidably fitted into the fixed-side bracket 41 and fixed at a predetermined sliding position.

[0073] As shown in Figures 8 and 9, the fixed side fitting 41 as a whole comprises a back plate portion 41a that abuts the upper and lower lip portions 3c, 3c on the front side of the structural material 3, 3· made of the lip channel steel, side plate portions 41b, 41b on both sides of the back plate portion 41a, and mating pieces 41c, 41c on both the upper and lower end sides of the back plate portion 41a, and is a member with a U-shaped cross section in which the front sides of the side plate portions 41b, 41b are open toward the front, and its vertical length corresponds approximately to the width between the upper and lower flange portions 3b, 3b of the structural material 3, 3· made of the lip channel steel (the vertical dimension of the lip channel steel).

[0074] Drill screw insertion holes 41d, 41d are opened at both upper and lower ends of the back plate portion 41a at positions corresponding to the upper and lower lip portions 3c, 3c on the front side of the structural members 3, 3..., for inserting drill screws 51, 51 toward the lip portions 3c, 3c of the structural members 3, 3.... Furthermore, at the lower ends of the side plate portions 41b, 41b, insertion holes 41e, 41e for temporary fastening bolts 52 that temporarily fasten the height adjustment position of the movable-side metal fitting 42 relative to the fixed-side metal fitting 41 (the mounting position of the joist 1, 1...) through elongated holes (loose holes) 42c, 42c for adjusting the mounting position of the movable-side metal fitting 42, which will be described later.

[0075] Furthermore, mating pieces 41c, 41c of a predetermined width on both upper and lower ends of the back panel 41a extend parallel to each other by a predetermined distance from the upper and lower ends of the back panel 41a toward the center of the flanges 3b, 3b of the structural members 3, 3.... These upper and lower pieces 41c, 41c serve as guides for accurately positioning the fixed-side bracket 41 body relative to the structural members 3, 3..., allowing for fastening with drill screws 51, 51 in this accurately positioned state. Therefore, with this configuration, the fixed-side bracket 41 body, which serves as the base for the furring strip mounting bracket 4 with its furring strip mounting position adjustment function, can be more accurately mounted relative to the building structural members 3, 3.... As a result, the mounting position of the movable-side bracket 42, which is mounted slidably relative to the fixed-side bracket 41, is also accurate.

[0076] On the other hand, as shown in Figures 6, 7, 10, and 11, the movable-side fitting 42 generally comprises a back plate 42a, side plates 42b, 42b on both sides of the back plate 42a, and a siding mounting portion 42A extending downward from the back plate 42a. The front sides of the side plates 42b, 42b are open toward the rear, forming a U-shaped cross section, and its vertical length roughly corresponds to the length of the fixed fitting 41. The dimension between the side plates 42b, 42b corresponds to the dimension (outer diameter) between the outer surfaces of the side plates 41b, 41b of the fixed-side fitting 41. The side plates 42b, 42b are fitted to the outsides of the left and right side plates 41b, 41b of the fixed fitting 41, and can be slid vertically to adjust the mounting height of the siding 1, 1...

[0077] The side plate portions 42b, 42b are provided with elongated holes (loose holes) 42c, 42c with vertical dimensions (lengths) sufficient to adjust the installation height of the sills 1, 1... in consideration of dimensional errors in the installation position of the above-mentioned structural materials 3, 3... (for example, a maximum dimension of 50 mm: see dimension H in Figure 14), and when the elongated holes (loose holes) 42c, 42c are fitted to the left and right side plate portions 41b, 41b of the fixed side fitting 41, temporary fastening bolts 52 are inserted into the elongated holes (loose holes) 42c, 42c, and the temporary fastening bolts 52 are passed through the temporary fastening bolt insertion holes 41e, 41e of the left and right side plate portions 41b, 41b of the fixed side fitting 41, and temporary fastening (temporary tightening) is achieved by screwing temporary fastening nuts 52a into the outer end protrusions. Furthermore, drill screw insertion holes 42d, 42d are opened at the upper ends of the side plate portions 42b, 42b, through which drill screws 53, 53 are inserted toward the upper ends of the left and right side plate portions 41b, 41b of the fixed-side metal fitting 41. Then, by accurately adjusting and positioning the height position of the main body of the movable-side metal fitting 42, i.e., the height position of the sidings 1, 1... attached via the movable-side metal fitting 42, with respect to the fixed-side metal fitting 42, and then screwing the drill screws 53, 53 into the upper ends of the left and right side plate portions 41b, 41b of the fixed metal fitting 41 in this accurately positioned state, the attachment height of the sidings 1, 1... can be adjusted to accommodate dimensional errors (for example, a maximum dimension H = 50 mm) in the installation positions of the structural members 3, 3... and then fixed.

[0078] In Figure 14, (a) shows the case where there is no installation error in the structural material 3 on the building side and the adjustment dimension is zero, (b) shows the case where there is an installation error of 25 mm, which is about half of the expected maximum dimension H = 50 mm, and (c) shows the case where there is an installation error of the expected maximum dimension H = 50 mm.The siding mounting bracket 4 of this embodiment can appropriately accommodate the installation error ranges of (a) to (c) and can be installed by adjusting the height of the sidings 1, 1, etc. so that they remain constant in either case.

[0079] <Regarding the engagement and mounting structure of the sill 1, 1... with the sill mounting portion 42A of the movable side metal fitting 42> 10 to 13, a sill mounting portion 42A is provided at the lower end of the back plate portion 42a of the movable-side metal fitting 42. This sill mounting portion 42A is formed by widening the lower end of the back plate portion 42a in a mountain shape from the upper end side to the lower end side, and is configured by providing first and second sill mounting pieces 42B, 42C on both left and right ends of the widened portion that abut relatively slidably along the inner surfaces of the left and right flange portions 1b, 1b of the sill 1, 1... and engage with the undersides of the hook portions 1c, 1c at the upper ends of the flange portions 1b, 1b.

[0080] The first and second sill mounting pieces 42B, 42C are formed by bending portions of both the left and right ends of the widened portion of the sill mounting portion 42A in opposite directions at right angles to the desired length, and the tip of the second mounting piece 42C on one side is further bent at a right angle toward the inside of the sill 1,1··, so that a portion of its upper end protrudes upward a predetermined distance higher than the height of the flange portions 1b,1b·· (hook portions 1c,1c··) of the sill 1,1·· (see Figures 10, 11, 19 to 22).

[0081] The vertical width of the main body of these first and second siding mounting pieces 42B, 42C (the part that abuts against the flange parts 1b, 1b... of the siding 1, 1...) corresponds to the dimension between the upper surface of the web part 1a of the siding 1, 1... and the lower surface of the hook part 1c, 1c.... For example, as shown in Figures 16 and 17, the first and second siding mounting pieces 42B, 42C are inserted into the siding 1, 1... and rotated horizontally by a predetermined angle. 18 (the main body portions of the first and second sill mounting pieces 42B, 42C are in contact with and overlap the flange portions 1b, 1b of the sill 1, 1·· inside the sill 1, 1··), the first and second drill screws 50a, 50b are threadedly inserted and fastened from the outside of the flange portions 1b, 1b of the sill 1, 1·· to the first and second sill mounting pieces 42B, 42C on the inside, as shown in Figures 19 and 20. Therefore, the main body portions of the first and second sill mounting pieces 42B, 42C are formed with a vertical width and horizontal length sufficient to threadably insert and fasten the first and second drill screws 50a, 50b.

[0082] The insertion of the first and second sill mounting pieces 42B, 42C into the sills 1, 1... shown in Figure 16, the rotation horizontally by a predetermined angle after insertion as shown in Figure 17, and the engagement into the state shown in Figure 18 are each performed as follows.

[0083] <Insertion of the first and second sill mounting pieces 42B, 42C shown in FIG. 16 into the sills 1, 1...> To insert the first and second sill mounting pieces 42B, 42C into the sill 1, 1..., as shown in the oblique view (a), top view (b), and front view (c) of Figure 16, the first and second sill mounting pieces 42B, 42C are first rotated horizontally to the right by a predetermined angle relative to the longitudinal direction of the sill 1, so that they are in an oblique position (narrow width) that allows them to be inserted between the flange portions 1b, 1b, and then inserted from above downward.

[0084] <Rotation of the first and second sill mounting pieces 42B, 42C in the reverse direction by a predetermined angle after insertion into the sills 1, 1...> As described above, when the first and second sill mounting pieces 42B, 42C are inserted up to the upper surface of the web portion 1a inside the sill 1,1·, the first and second sill mounting pieces 42B, 42C are then returned to the left within the sill 1 by the same horizontal angle, opposite to the insertion position, as shown in the oblique view (a), top view (b), and front view (c) of Figure 17.

[0085] As a result, the main body portions of the first and second sill mounting pieces 42B, 42C abut and overlap parallel to the flange portions 1b, 1b of the sill 1 within the sill 1, 1·, while the back panel portion 42a and the sill mounting portion 42A are perpendicular to the sill 1, thereby achieving the sill engagement state shown in (a) to (c) of Figure 18.

[0086] In this case, the bottom end of the center of the furring strip mounting portion 42A is provided with an inverted trapezoidal convex portion 42E, while the top center of the web 1a of the furring strip 1 is provided with a wide groove 1d corresponding to the convex portion 42E. Therefore, when the first and second furring strip mounting pieces 42B and 42C are inserted into the furring strip 1, the bottom end of the inverted trapezoidal convex portion 42E of the furring strip mounting portion 42A fits into the wide groove 1d at the top center of the web 1a of the furring strip 1. 1d, and the first and second sill mounting pieces 42B, 42C rotate smoothly as shown by the arrows in Figure 17(b) with the inverted trapezoidal convex portion 42E as a fulcrum, and with the corner portion (rounded surface) on the back side of the bent portion of the first and second sill mounting pieces 42B, 42C as the front end in the rotation direction, they smoothly engage into a perpendicular state (state in Figure 18) without significant collision or friction with the inner wall surfaces of the flange portions 1b, 1b of the sill 1.

[0087] In the engaged state shown in Fig. 18, the first and second siding mounting pieces 42B, 42C on both ends of the siding mounting portion 42A can slide relative to the siding 1. Therefore, as shown by the arrows in Fig. 15(b), not only can the mounting height of the siding 1 be adjusted, but the mounting position of the siding 1 in the longitudinal direction can also be adjusted. Then, as shown in Figs. 15(c), 19, and 20, first and second drill screws 50a, 50b are threadedly inserted from the outside to the inside of the first and second siding mounting pieces 42B, 42C of the flange portions 1b, 1b of the siding 1, whereby the siding 1 is finally attached to the first and second siding mounting pieces 42B, 42C on both sides of the siding mounting portion 42A of the movable metal fitting 42, and fastened and fixed as shown in Figs. 21 and 22.

[0088] <Regarding the realization of an appropriate screw-fitting structure of the furring strip 1 to the main body portions of the first and second furring strip mounting pieces 42B and 42C> However, when threading and inserting the first and second drill screws 50a, 50b from the outside of the flange portions 1b, 1b of the siding 1 into the main body portions of the first and second siding mounting pieces 42B, 42C on the inside as described above, the location of the main body portions of the first and second siding mounting pieces 42B, 42C on the inside (the appropriate threading position that can achieve effective fastening strength) cannot be determined simply by looking from the outside of the flange portions 1b, 1b of the siding 1, which creates a problem in that proper drilling work cannot be performed.

[0089] However, in the above configuration, the position of the main body portion of the first sill mounting piece 42B on one side is set to correspond to the side width of the sill mounting bracket 4 located at the top, as is clear from Figure 21, so that drilling work (threading and inserting the first drill screw 50a) can be performed using the side width of the sill mounting bracket 4 as a reference.The position of the main body portion of the second sill mounting piece 42C on the other side is set to be located between the protrusion 42D, which is formed by bending the tip side of the second sill mounting piece 42C at a right angle toward the inside of the sill 1,1·· and protruding a portion of its upper end upward by a predetermined dimension higher than the height of the flange portions 1b,1b·· (hook portions 1c,1c··) of the sill 1,1··, and the upper wall portion of the sill mounting portion 42A, so that drilling work (threading and inserting the second drill screw 50b) can be performed using the intermediate portion thereof as a position reference. Therefore, after the adjustment of the furring strip installation height and the adjustment of the furring strip longitudinal installation position as shown in (a) to (b) of Figure 15 above have been completed, the final installation work (fixing work) of the furring strip 1 as shown in (c) of Figure 15, Figure 19, and Figure 20 becomes very easy.

[0090] <Configuration of ceiling panel 2> The ceiling panel 2 is made of, for example, gypsum board, and as shown in Figures 1 and 2, is attached by using the plurality of rough siding mounting brackets 4, 4... to screw from below to the wide groove portions 1d, 1d... in the center of the lower web portions 1a, 1a... of the plurality of rough sidings 1, 1... which are arranged in a crosswise manner on the lower side of the plurality of structural members 3, 3... made of the lip channel steel.

[0091] <Features and functions of the siding mounting brackets 4, 4... according to the embodiment of the invention of this application> As described above, the ceiling sill mounting bracket 4, 4... according to the embodiment of the invention of this application is a ceiling underlayment ceiling sill mounting bracket that directly mounts ceiling board mounting sills 1, 1... to the building's designated structural members (supporting structural members) 3, 3... that are supported in a horizontal state by being fixed directly or indirectly to the building's structural frame, and the ceiling sill mounting bracket 4, 4... has a back panel portion 41a and side panel portions 41b, 41b on both sides of the front side of the back panel portion 41a. The fixed-side metal fitting 41 has a U-shaped cross section and a predetermined length in the vertical direction, and the back plate portion 41a is fixed perpendicularly to the wall surface of the predetermined structural member 3, 3, on the building side. The fixed-side metal fitting 41 has side plate portions 42b, 42b on both sides of the back plate portion 42a and the front side of the back plate portion 42a, and the side plate portions 42b, 42b are fitted to the side plate portions 41b, 41b of the fixed-side metal fitting 41 so as to be slidable in the vertical direction. The movable side fitting 42 has a U-shaped cross section and a siding mounting portion 42A. The movable side fitting 42 has side plate portions 42b, 42b provided with elongated holes 42c, 42c for adjusting the siding mounting height of a predetermined length extending in the vertical direction. The side plate portions 41b, 41b of the fixed side fitting 41 have temporary fastening bolts 52 and temporary fastening nuts 52a that slidably engage with the elongated holes 42c, 42c for adjusting the siding mounting height to temporarily fasten the movable side fitting 42 to the fixed side fitting 41. After adjusting the vertical position of the movable side metal fitting 42 relative to the fixed side metal fitting 41 fixed to the predetermined structural material 3, 3... on the building side, the movable side metal fitting 42 is fixed to the fixed side metal fitting 41 with drill screws 53, 53, so that the ceiling panel mounting framing 1, 1... can be mounted horizontally to the predetermined structural material 3, 3... on the building side regardless of the horizontal state of the predetermined structural material 3, 3... on the building side.

[0092] In this configuration, the structural members 3, 3... on the building side, which serve as support members for attaching the rough joists, are fixed to the structural frame of the building, so the structural members 3, 3... have roughly the same strength as the structural frame of the building, greatly improving their strength as support structural members for the ceiling boards 2. Therefore, with this configuration, there is no need to install reinforcing means to improve the strength and earthquake resistance of the structural members 3, 3...

[0093] The rafters 1,1... are attached directly to the high-strength structural members 3,3... via rafter mounting brackets 4,4.... Therefore, the ceiling substructure, consisting of the structural members 3,3... and the rafters 1,1... attached to the structural members 3,3... via rafter mounting brackets 4,4..., is integrated into the structural frame of the building as a quasi-structure (capable of following the movement of the structural frame of the building during an earthquake). This prevents the amplification of vibrations on the ceiling surface, as occurs with conventional suspended ceilings, and realizes a highly earthquake-resistant quasi-structural earthquake-resistant ceiling that does not fall under the regulations for special ceilings.

[0094] In this case, the specified structural materials 3, 3·· fixed to the building structural body are fixed as horizontally as possible to the building structural body, and are constructed so that the ceiling panels 2, 2·· that are ultimately attached to the joists 1, 1·· are installed horizontally.

[0095] However, as shown in Figure 14, the reality is that there is a considerable error (variation) in the horizontal level of the specified structural members 3, 3... that are actually fixed to the building's structural body, and it is therefore necessary to adjust the height when installing the rough siding 1, 1... via the rough siding mounting brackets 4, 4...

[0096] Therefore, in the configuration of the ceiling underlayment joist mounting bracket 4, 4·· in this embodiment, as described above, the joist mounting bracket 4, 4·· is comprised of a fixed-side bracket 41 having a U-shaped cross section and a predetermined length in the vertical direction, which has side plates 41 b, 41 b on both sides of the back plate 41 a and the front side of the back plate 41 a, and the back plate 41 a is fixed perpendicular to the wall surface of the predetermined building structural material 3, 3··, and a movable-side bracket 42 having a U-shaped cross section and a predetermined length in the vertical direction, which has side plates 42 b, 42 b on both sides of the front side of the back plate 42 a, and the side plates 42 b, 42 b are fitted to the fixed-side bracket 41 so as to be slidable in the vertical direction while facing the side plates 41 b, 41 b, and the movable-side bracket 42 has a U-shaped cross section and a joist mounting portion 42A on the lower end of the back plate 42 a, and the side plates 42 b, 42 b of the movable-side bracket 42 are fitted to the fixed-side bracket 41 so as to be slidable in the vertical direction. b are provided with elongated holes 42c, 42c of a predetermined length extending in the vertical direction for adjusting the joist installation height, while the side plate portions 41b, 41b of the fixed side fitting 41 support temporary fastening bolts 52 and temporary fastening nuts 52a that slidably engage with the elongated holes 42c, 42c for adjusting the joist installation height and temporarily fasten the movable side fitting 42 to the fixed side fitting 41, and after adjusting the vertical position of the movable side fitting 42 relative to the fixed side fitting 41 fixed to the predetermined structural material 3, 3... on the building side, the movable side fitting 42 is fixed to the fixed side fitting 41 with drill screws 53, 53, so that the joist 1, 1... for attaching the ceiling board can be attached horizontally to the predetermined structural material 3, 3... on the building side regardless of the horizontal state of the predetermined structural material 3, 3...

[0097] In this configuration, the siding mounting brackets 4, 4·· for mounting the siding 1, 1·· have a back plate portion 41 a and side plate portions 41 b, 41 b on both sides of the front side of the back plate portion 41 a, and the back plate portion 41 a is fixed perpendicularly to the wall surface of the predetermined structural material 3, 3· on the building side. The fixed side bracket 41 has a U-shaped cross section with a predetermined length in the vertical direction, and a back plate portion 42 a and side plate portions 42 b, 42 b on both sides of the front side of the back plate portion 42 a, and is opposed to the side plate portions 41 b, 41 b of the fixed side bracket 41. The fixed side fitting 41 and the movable side fitting 42 are each U-shaped in cross section and are fitted together with their open sides facing each other, forming a completely closed cross section structure of approximately a square shape, as shown in Figure 5, for example.

[0098] In this closed cross-section structure, the side plate portions 41b, 41b on both sides of the fixed side fitting 41 and the side plate portions 42b, 42b on both sides of the movable side fitting 42, which have similar width dimensions, overlap each other on the left and right sides, so that while the front and back sides each have a single wall (together they are double walls), the left and right sides each have a strong double wall (together they are four-walls).Furthermore, since these double wall portions are ultimately fastened together with drill screws 53, 53 as shown in Figures 2 and 3, the rigidity and seismic strength in the horizontal direction (towards the ceiling surface) are greatly improved compared to the configuration of the main body overlapping portion (trunk plate overlapping portion) of the conventional example described above, regardless of the size of the installation error (the size of the length of the fitting portion) of the specified structural members 3, 3... on the building side as shown in Figures 14(a) to (c).

[0099] Furthermore, the side plate portions 42b, 42b of the movable side fitting 42 are provided with elongated holes 42c, 42c of a predetermined length extending in the vertical direction for adjusting the installation height of the siding, while the side plate portions 41b, 41b of the fixed side fitting 41 are provided with temporary fastening bolts 52 and temporary fastening nuts 52a that slidably engage with the elongated holes 42c, 42c for adjusting the installation height of the siding, and the movable side fitting 42 can be temporarily fastened to the fixed side fitting 41 as desired using the temporary fastening bolts 52 and temporary fastening nuts 52a, making it easy to adjust the installation height of the siding 1, 1... Furthermore, because the temporary fastening is performed at a predetermined distance on both the left and right sides, a more stable temporary fastening state can be maintained.

[0100] Furthermore, the elongated holes 42c, 42c for adjusting the joist mounting height and the temporary fastening bolts 52 and temporary fastening nuts 52a that slidably engage with the elongated holes 42c, 42c are provided on the side plate portions 42b, 42b and 41b, 41b of the movable-side bracket 42 and the fixed-side bracket 41, respectively, allowing for free installation, unlike the conventional example in which screw holes (elongated holes) and screws are provided perpendicular to the main body portions (trunk plate portions) of the fixed-side bracket and movable-side bracket that are aligned with the mounting surface (web surface) of the specified structural material (lip channel steel) on the building side. In other words, the joist mounting brackets 4, 4... can be attached to either the front or back surface (web surface or lip surface of the lip channel steel) of the specified structural material (lip channel steel) on the building side.

[0101] Furthermore, the elongated holes 42c, 42c for adjusting the joist mounting height can be formed using almost the entire length of the side plate portions 42b, 42b of the movable metal fitting 42, excluding the portions where the drill screws 53, 53 are threaded in the vertical direction, so the adjustment dimension for the joist mounting height can be set to a sufficiently large value corresponding to the maximum dimension (H in FIG. 14) of the expected mounting error of the specified structural members 3 on the building side. Therefore, it is possible to fully accommodate the expected mounting error of the specified structural members 3 on the building side.

[0102] In addition, in this configuration, the first and second sill mounting pieces 42B, 42C of the sill mounting portion 42A provided on the lower end side of the back plate portion 42a of the movable side fitting 42 can be inserted diagonally between the flanges 1b, 1b of the sill 1,1·, and then returned in the opposite direction within the sill 1,1·, so that the sill 1,1· can be easily supported in an engaged state, and moreover, in this engaged state, the sill 1,1· can be slid longitudinally.

[0103] Therefore, it is easy to attach the sills 1, 1... to the movable side metal fitting 42, and it is also easy to adjust the attachment position of the sills 1, 1... in the longitudinal direction.

[0104] <Configurations of Modifications 1 and 2> In the configuration of the above embodiment, lip channel steel is used as the specified structural material 3, 3... on the building side, and as shown in Figures 2 to 4, the web portion 3a of the lip channel steel is stood upright in the vertical direction, and the fixed side bracket 41 of the siding mounting bracket 4 is attached vertically using the open side lip portions 3c, 3c as the mounting surface.However, this can also be changed so that the fixed bracket 41 of the siding mounting bracket 4 is attached using the web portion 3a of the lip channel steel as the mounting surface, as shown in Figure 23 (a) for example (variant 1).

[0105] With this configuration, for example, in the case of a ceiling substructure as shown in Figure 1, where the basic configuration is to attach the furring strip mounting brackets 4, 4... using the lip portions 3c, 3c as the mounting surface, it becomes possible to deal with cases where it is difficult to install the furring strips from the lip portions 3c, 3c side, such as near the wall at the very edge of the ceiling surface, without any problems.

[0106] The state in which the rough siding mounting bracket 4 is attached to the structural material 3 on the front side in FIG. 1 shows the state in which it is attached using such a configuration.

[0107] Furthermore, a similar installation can also be applied when the structural members 3, 3... on the building side are replaced with lip channel steel as described above, and square steel pipes of similar vertical dimensions are used, as shown in (b) of Figure 23 (variant 2).

[0108] In this case, the same mounting method as that used when mounting the fixing bracket 41 of the rough siding mounting bracket 4 using the web portion 3a of the lip channel steel as the mounting surface can be used.

[0109] In this case, the cross-sectional shape of the square steel pipe is not limited to a vertically elongated rectangle, but may be, for example, a square.Furthermore, the steel pipe is not limited to a welded steel pipe, but may be a corner-crimped steel pipe with crimped corners.

[0110] <Configuration of Modification 3> In the above embodiment, the sill mounting bracket 4 is configured so that the side plates 42b, 42b of the movable side bracket 42 are slidably fitted to the outside of the side plates 41b, 41b of the fixed side bracket 41. However, the fitting relationship of these side plates can also be reversed, for example, as shown in Figure 24, in which the side plates 42b, 42b of the movable side bracket 42 are slidably fitted to the inside of the side plates 41b, 41b of the fixed side bracket 41. In this case, long holes (loose holes) 41f, 41f for adjusting the sill mounting height are provided on the side plates 41b, 41b of the fixed side fitting 41, and insertion holes (support parts) for temporary fixing bolts 52 are provided on the upper end parts of the side plates 42b, 42b of the movable fitting 42.

[0111] With this configuration, the same effects as those of the above embodiment can be achieved.

[0112] <Configurations of Modifications 4, 5, and 6> In the above embodiment, the siding mounting bracket 4 is provided with insertion holes 41e, 41e for the temporary fixing bolt 52 at the lower end of the side plates 41b, 41b of the fixed side bracket 41, and elongated holes (loose holes) 42c, 42c for adjusting the mounting position of the siding in the side plates 42b, 42b of the movable side bracket 42, and the side plates 42b, 42b of the movable side bracket 42 are fitted to the outside of the side plates 41b, 41b of the fixed side bracket 41, and the temporary fixing bolt 52 is fitted slidably as a mutual engagement means. However, as in the above-mentioned modified example 3, When the side plates 42b, 42b of the movable fitting 42 are slidably fitted inside the side plates 41b, 41b, instead of the temporary fixing bolt 52, circular protrusions 42f, 42f made by dowel processing, for example as shown in Figure 25, can be provided at the insertion position of the temporary fixing bolt 52, and the circular protrusions 42f, 42f made by dowel processing can be slidably forced into the long holes (loose holes) 41f, 41f for adjusting the sill mounting height of the side plates 41b, 41b of the fixed side fitting 41, as shown in Figure 26.

[0113] In other words, with this configuration, the circular protrusions 42f, 42f formed by dowel processing slidably engage with the elongated holes (loose holes) 41f, 41f for adjusting the installation height of the siding, with a predetermined level of pressing force (pressing force due to forced fitting) being applied. If the level of this pressing force is designed to be sufficient to support the weight of the siding 1, 1..., it is possible to obtain both the sliding ability required for height adjustment and the locking force required for temporary fastening after sliding.

[0114] As a result, the circular protrusions 42f, 42f formed by the dowel processing function as mutual engagement and temporary fastening means similar to the temporary fastening bolt 52 and nut 52a of the above-described embodiment (Modification 4).

[0115] In addition, the same engagement and temporary fastening action as the circular protrusions 42f, 42f formed by the above-mentioned dowel processing can also be achieved by, instead of the circular protrusions 42f, 42f formed by the above-mentioned dowel processing, for example, circular protrusions 42g, 42g formed by burring processing (variant 5) as shown in Figures 27 and 28, or even by approximately circular protrusions 43a, 43a formed by bending deformation of a leaf spring structure (variant 6) as shown in Figures 29 and 30.

[0116] The circular protrusions 42g, 42g can be formed more easily by burring than by doweling.

[0117] In addition, the approximately circular convex portions 43a, 43a caused by bending deformation of the leaf spring structure can be easily formed by horizontally cutting out a portion of the upper end of the side plates 42b, 42b of the movable side fitting 42 and bending the middle of the cutout portion (cutout piece) 43, 43 into a convex shape.

[0118] In either case, as with the bolts 52 and nuts 52a in Fig. 24, once the adjustment of the furring strip mounting height is completed, drill screws 53 are threadedly inserted from both sides of the lower portions of the elongated holes (loose holes) 41f for adjusting the furring strip mounting height, fastening and fixing the overlapping side plates 41b of the fixed-side metal fitting 41 and the side plates 42b of the movable-side metal fitting 42 together, firmly integrating them. Therefore, it is possible to achieve connection strength substantially similar to that of the above embodiment.

[0119] It should be noted that the configurations of these modified examples 4, 5 and 6 are not necessarily limited to the configuration of modified example 3 as shown in Figure 24 above. In the above-mentioned embodiment (Figure 5) in which the siding mounting bracket 4 is configured so that the side plates 42b, 42b of the movable side bracket 42, which have long holes 42c, 42c for adjusting the siding mounting height, are slidably fitted to the outside of the side plates 41b, 41b of the fixed side bracket 41, it goes without saying that a similarly configured protrusion may be provided at the position of the bolt 52 insertion holes 41e, 41e of the fixed side bracket 41. [Explanation of symbols]

[0120] 1: No-en 1a: Web part of the rough frame (C-shaped steel) 1 1b: Flange part of rough frame (C-shaped steel) 1 1c: Hook part (lip part) of rough frame (C-shaped steel) 1 2: Ceiling panel 3: Structural material specified on the building side (lip channel steel) 3a: Web part of the structural material (lip channel steel) 3 on the building side 3b: Flange part of the structural material (lip channel steel) 3 specified on the building side 3c: Lip part of the structural material (lip channel steel) 3 specified on the building side 4: Rough frame mounting bracket 41: Fixed side bracket 41a: Back plate portion of fixed side bracket 41 41b: Side plate portion of fixed side metal fitting 41 41c: Fitting piece of fixed side metal fitting 41 42: Movable side fitting 42a: Back plate portion of movable side metal fitting 42 42b: Side plate portion of movable side metal fitting 42 42c: Long hole (loose hole) for adjusting the mounting height of the movable side bracket 42 42A: Movable side bracket 42 rough frame mounting portion 42B: First frame mounting piece of the movable side bracket 42 42C: Second frame mounting piece of the movable side bracket 42 42D: upward protrusion of the second sill mounting piece 42C of the movable side metal fitting 42 50a: Rough edge 1,1··Drill screws for installation 50b: Rough edge 1,1··Drill screws for installation 51: Drill screw for mounting the fixed side bracket 41 52: Temporary fastening bolt 52a: Temporary fastening nut corresponding to temporary fastening bolt 52 53: Drill screw for mounting the movable bracket 42

Claims

1. A ceiling underlayment mounting bracket that directly attaches a ceiling board mounting bracket to a predetermined structural material on the building side that is supported horizontally by being fixed directly or indirectly to the structural frame of the building side. The above-mentioned siding mounting bracket is a fixed-side bracket with a U-shaped cross section and a predetermined length in the vertical direction, which has side plate portions on the back plate portion and both sides of the front side of the back plate portion, and the back plate portion is fixed perpendicular to the wall surface of the predetermined structural material of the building side, and a movable-side bracket with a U-shaped cross section and a predetermined length in the vertical direction, which has side plate portions on the back plate portion and both sides of the front side of the back plate portion, and the side plate portions are fitted so that they can slide in the vertical direction while facing the side plate portions of the fixed-side bracket, and the siding mounting bracket is on the lower end of the back plate portion, A vertically extending elongated hole for adjusting the mounting height of the siding is provided in one of the side plate portions of the movable side fitting or the fixed side fitting, while the other side plate is provided with a temporary fastening means for temporarily fastening the movable side fitting to the fixed side fitting by slidably engaging with the elongated hole for adjusting the mounting height of the siding. After adjusting the vertical position of the movable-side fitting relative to the fixed-side fitting fixed to a predetermined structural material on the building side, the movable-side fitting is fixed to the fixed-side fitting with a predetermined screwing means, This ceiling underlayment mounting bracket is characterized in that the ceiling board mounting bracket can be mounted horizontally to the specified structural material on the building side regardless of the horizontal state of the specified structural material on the building side.

2. The temporary fastening means for temporarily fastening the movable side fitting to the fixed side fitting by slidably engaging with the elongated hole for adjusting the mounting height of the siding comprises a temporary fastening bolt of a predetermined length and a temporary fastening nut corresponding to the temporary fastening bolt, The temporary fixing bolt is passed through an elongated hole for adjusting the sill mounting height in one of the side plate portions of the movable side fitting or the fixed side fitting, and then passed through a temporary fixing bolt insertion hole provided in the side plate portion of the other side fitting, 2. The ceiling underlayment siding mounting bracket according to claim 1, wherein a temporary fastening nut is screwed onto the outer end of the bracket to temporarily fasten the bracket.

3. The temporary fastening means for temporarily fastening the movable-side fitting to the fixed-side fitting by slidably engaging with the elongated hole for adjusting the furring strip mounting height is comprised of a protrusion provided at a position corresponding to the elongated hole for adjusting the furring strip mounting height on the side plate portion of the movable-side fitting or the fixed-side fitting that does not have an elongated hole for adjusting the furring strip mounting height, The ceiling underlayment mounting bracket as described in claim 1 is temporarily fastened by engaging the convex portion with a long hole for adjusting the mounting height of the soffit on the side plate portion of the other bracket, which has a long hole for adjusting the mounting height of the soffit.

4. The lower end of the back plate of the movable metal fitting has a width corresponding to the dimension between the flanges of the flange consisting of the web and flange, and at both ends thereof, first and second flange mounting pieces of a predetermined length and a predetermined height are provided which are bent at right angles in opposite directions to each other, The first and second sill mounting pieces extending in opposite directions are inserted between the flanges at the sill opening, tilted at a predetermined angle horizontally along the sill longitudinal direction, and rotated so that the sill mounting parts are perpendicular to the sill within the sill. A ceiling underlayment mounting bracket as described in claim 1, 2 or 3, characterized in that the first and second mounting pieces are overlapped with the inner wall of the flange portion of the ceiling underlayment, and the ceiling underlayment is attached by screwing in a specified screwing means from the outside in this overlapped state.

5. The first or second furring strip mounting piece has a tip end portion that protrudes higher than the upper end of the flange portion of the furring strip, The ceiling underlayment mounting bracket as described in claim 4, characterized in that the protrusion is configured to overlap the first and second furring strip mounting pieces with the inner wall of the flange portion of the furring strip, and to serve as a marker for determining the screwing position when screwing a specified screwing means from the outside of the flange portion toward the first and second furring strip mounting pieces in this overlapping state.

6. A ceiling underlayment mounting bracket as described in claim 1, 2, 3, 4 or 5, characterized in that fitting pieces are provided on both the upper and lower ends of the back side of the back panel portion of the fixed side bracket to fit onto both the upper and lower surfaces of a specified structural material on the building side.

7. A ceiling underlayment siding mounting bracket as described in claims 1, 2, 3, 4, 5 or 6, characterized in that the specified structural material on the building side is made of lip channel steel, and the back plate portion of the fixed side bracket is attached and fixed to the upper and lower lip portions or web portions of the lip channel steel.

8. 7. A ceiling underlayment mounting bracket as claimed in claim 1, 2, 3, 4, 5 or 6, characterized in that the specified structural material on the building side is made of a square steel pipe, and the back plate portion of the fixed side bracket is attached and fixed to the vertical wall portion of the square steel pipe.

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