JP7535618B1 - Suspended folded plate roof and its construction method - Google Patents

Abstract

[Purpose] A suspended type folded-plate roof and its construction method that can be installed without processing the folded-plate roof panel material for suspension.
[Configuration] The roof structure includes a folded-plate roof panel material 9 constituting a folded-plate roof C having mountain-shaped portions 9T at a predetermined interval and a fitted portion 94 at the heightwise intermediate portion of the mountain-shaped portions 9T, an upper hanging member A1 having a base portion 1 with rising side panels 12 formed on both sides in the width direction and a U-shaped locking portion 2 provided with a hanging screw portion 3 penetrating the base portion 1, a lower hanging member 4 having a fitting portion 43 at the bottom of the hanging leg portion 42 and connected to the upper hanging member A1, and an expansion fixture B. The upper hanging member A1 and the lower hanging member 4 are fixed to the flange portion 81 of the hanging structural material 8, the fitting portion 43 of the lower hanging member 4 is fitted into the mountain-shaped portions 9T, and the expansion fixture B is provided between both fitted portions 94 from the inside side of the mountain-shaped portions 9T.
[Selected figure] Figure 2

Description

The present invention relates to a suspended metal folded-plate roof that can be installed without processing the folded-plate roof material for hanging, and to a method for installing the same.

Large eaves are installed in buildings with large entrances, such as factories and warehouses. Some of these large eaves are made of metal folded-plate roofing materials. Generally, folded-plate roofs are made by installing supports on suspended structural materials such as H-shaped steel, and then installing folded-plate roofing materials through these supports to form the roof, making it easy to use this as a eaves.

However, with this type of eaves, the suspended structural material is installed under the folded roof panel material, and the suspended structural material, such as H-shaped steel, reduces the appearance of the eaves when viewed from people passing under the eaves. Also, dust accumulates on the suspended structural material, and this can be blown away by the wind, etc., causing dust to fall on people passing under the eaves.

For this reason, there are roof structures in which a suspended structural member is installed above a folded-plate roofing material, and the folded-plate roofing material is suspended by this suspended structural member to form an eaves. This suspended type of folded-plate roof is not only used for eaves, but can also be used for the roofs of normal buildings. Patent Document 1 discloses this type of suspended type roof or eaves. According to Patent Document 1, a metal folded-plate material is suspended under a suspended structural member made of H-shaped steel, and the roof is constructed accordingly. The suspended type eaves described in Patent Document 1 are also disclosed.

JP 2003-201763 A

The invention of Patent Document 1 and the prior art disclosed therein realize a hanging-type folded-plate roof eaves, but these use architectural hanging fixtures and pointed bolts to hang the metal folded-plate material from the hanging structural material, and the pointed bolts and nuts are used to hang the metal folded-plate material from the hanging structural material. Due to this configuration, a through hole for the pointed bolt is formed in the metal folded-plate material.

In this way, the formation of through holes in the metal folded plate material can cause the paint to peel off in painted metal folded plate material, leading to rust, or the through holes can even cause rainwater to leak through. And more than anything, processing such as drilling through holes in the metal folded plate material is required, which increases the number of labor hours and affects the construction cost. Therefore, the object of this invention (the technical problem to be solved) is to provide a eaves that forms a suspended type folded plate roof by suspending the folded plate roof material from a structure without processing the folded plate roof material in any way, including through holes.

Therefore, the inventors have conducted extensive research to solve the above problems, and as a result, the invention of claim 1 is a folded-plate roofing sheet material constituting a folded-plate roof having angled portions at a predetermined interval and a fitted portion at the heightwise intermediate portion of the angled portions; an upper hanging member having a base portion with rising side plates formed on both sides in the width direction and a U-shaped U-shaped locking portion having a hanging screw portion penetrating the base portion on one side of the lower locking plate, the U-shaped locking portion being fitted within both rising side plates and moving in the vertical direction; and a lower hanging member having hanging legs formed downward from both ends in the width direction of the clamping top, having fitting portions at the lower portions of the hanging legs and connected to the upper hanging member. The above problem was solved by providing a suspended folded plate roof that includes an expansion fastener that is inserted into the mountain-shaped portion and expands in the width direction within the mountain-shaped portion to span between the two fitted portions of the mountain-shaped portion and maintain a predetermined distance between the two fitted portions, and a hanging structural member having a flange portion to which the U-shaped locking portion of the upper hanging member is attached, the upper hanging member and the lower hanging member are fixed to the flange portion of the hanging structural member, the two fitting portions of the lower hanging member are fitted into the two fitted portions of the mountain-shaped portion, and the expansion fastener is installed across the area between the two fitted portions of the mountain-shaped portion.

The invention of claim 2 is a suspended folded plate roof according to claim 1, characterized in that the expansion fixture has a right expansion plate and a left expansion plate and a fastening member of the same shape, the right expansion plate and the left expansion plate are formed with an expansion main plate portion, an inclined step portion and a support plate portion continuously formed from their respective widthwise outer ends, the inclined step portion is formed with a biting groove portion along the front-rear direction to a middle position in the front-rear direction, and a connecting long hole is formed extending along the width direction from the middle position in the front-rear direction with the inclined step portion as a center, the right expansion plate and the left expansion plate are arranged symmetrically in the width direction, the biting groove portion of the right expansion plate and the biting groove portion of the left expansion plate are joined so as to bite into each other, and the bolts of the fastening member are inserted between both the connecting long holes, and the two expansion main plate portions are expanded in the width direction by both the expansion main plate portions by tightening with nuts, and the two support plate portions are abutted against the expansion main plate portion on the other side, thereby solving the above problem.

The above problem is solved by the invention of claim 3, which is a suspended folded plate roof as described in claim 2, characterized in that the support plate parts of the right extension plate and the left extension plate of the extension fixture are positioned lower than both of the extension main plate parts, and the widthwise outer ends of both of the extension main plate parts are formed with a pressing edge facing downward.The above problem is solved by the invention of claim 4, which is a suspended folded plate roof as described in claim 2, characterized in that the support plate parts of the right extension plate and the left extension plate of the extension fixture are positioned higher than both of the extension main plate parts, and the widthwise outer ends of both of the extension main plate parts are formed with a pressing edge facing upward.

The invention of claim 5 is a suspended folded plate roof according to claim 1, characterized in that the expansion fixture has a right expansion plate, a left expansion plate, and a fastening member, the right expansion plate has a pressing edge bent upward at the widthwise outer end of the expansion main plate part, and an inclined guide surface inclined upward from the inner end is formed, a connecting plate part is formed from the inner end of the inclined guide surface, and an internal thread part is formed in the connecting plate part, the left expansion plate has an inclined guide surface inclined downward at the inner end of the connected plate part, a pressing edge bent upward at the widthwise outer end of the connected plate part, and a long hole is formed in the connected plate part, and the bolt of the fastening member is inserted into the long hole and screwed into the internal thread part.

The invention of claim 6 is a suspended folded plate roof according to claim 1, characterized in that the expansion fixture has a right expansion plate, a left expansion plate, and a fastening member, the right expansion plate is rectangular with an arc-shaped corner on any diagonal, the left expansion plate has the same outer shape as the right expansion plate, the right expansion plate has a square through hole, the left expansion plate has a circular through hole, the head root of the bolt of the fastening member has an angular root with a square cross section, and the angular root of the bolt is inserted into the through hole of the right expansion plate, thereby solving the above problem.

The above problem was solved by the invention of claim 7, which is a suspended folded plate roof according to claim 1 or 2, characterized in that the hanging screw portion is fixed to the U-shaped locking portion, and the upper hanging member and the lower hanging member are connected by the hanging screw portion of the upper hanging member and a nut. The above problem was solved by the invention of claim 8, which is a suspended folded plate roof according to claim 1 or 2, characterized in that the upper hanging member and the lower hanging member are connected and fixed by welding.

The invention of claim 9 is a configuration in which an upper hanging member has a base portion with rising side plates formed on both sides in the width direction, and a U-shaped U-shaped locking portion with a hanging screw portion penetrating the base portion on one side of the lower locking plate, the U-shaped locking portion being fitted within both rising side plates and movable in the vertical direction, the flange portion of the hanging structure material is clamped between the U-shaped locking portion and the base portion, a hanging leg portion is formed downward from both ends of the clamping top in the width direction, a lower hanging member has an engagement portion at the bottom of the hanging leg portion and is connected to the upper hanging member, and the lower hanging member is connected to the upper hanging member via the hanging screw portion and a nut, The above problem was solved by the construction method for a suspended folded plate roof, which is characterized in that the U-shaped locking portion and the base portion are clamped and fixed by tightening a nut, the fitting portions of the hanging legs of the lower hanging member are fitted into the fitting portions of a folded plate roof material that has mountain-shaped portions at a predetermined distance and a fitting portion at the middle of the height direction of the mountain-shaped portions, an expansion fixture is inserted into the mountain-shaped portions, which are expanded in the width direction within the mountain-shaped portions and installed between the fitting portions of the mountain-shaped portions, and the expansion fixture maintains the distance between the fitting portions of the mountain-shaped portions at a predetermined distance.

In the invention of claim 1, the upper hanging member and the lower hanging member, which are provided with a hanging screw portion, can be easily and quickly attached to the flange portion of the hanging structure material having a flange portion without welding by tightening the hanging screw portion. The lower hanging member has a fitting portion that faces inward.

The folded roof has mountain-shaped portions at a specified interval and a fitting portion at the heightwise middle of the mountain-shaped portions. By fitting the fitting portion of the lower hanging member to the fitting portion of the mountain-shaped portion of the folded roof plate material that constitutes the folded roof, the folded roof plate material can be hung extremely easily from the hanging structural material via the upper hanging member and the lower hanging member.

Furthermore, by providing the expansion fixture between the two fitted portions of the mountain-shaped portion of the folded-plate roof, the distance between the two fitted portions can be maintained at a predetermined distance. This allows the expansion fixture to maintain a strong fit between the two fitting portions of the hanging member and the two fitted portions in the width direction (Y direction) of the mountain-shaped portion of the folded-plate roof, preventing the distance between the fitted portions on both sides of the mountain-shaped portion in the width direction (Y direction) from narrowing and preventing them from falling off the hanging member.

In the present invention, the suspended folded-plate roof is basically constructed by first installing a suspended structural material, then installing a folded-plate roof hanging device consisting of an upper hanging member and a lower hanging member to the suspended structural material, then installing the folded-plate roof material to the lower hanging member of the folded-plate roof hanging device, and then installing the expansion fixing device to the mountain-shaped portion of the folded-plate roof consisting of the folded-plate roof material. This construction sequence is from top to bottom, and construction can be carried out from the position of the suspended structural material downward, making construction work extremely easy.

The folded roof panel material of the present invention does not require any drilling processes, as is seen in conventional or general suspended folded roofs, and can be used as is without any processing. Furthermore, by providing an expansion fixture between the two fitted parts of the mountain-shaped portion, the distance between the two fitted parts can be maintained at a predetermined distance.

Therefore, the gap between the two fitted parts of the mountain-shaped portion of the folded-plate roof does not narrow for any reason, and the fitted state between the two fitting parts of the lower hanging member of the folded-plate roof hanger and the two fitted parts of the mountain-shaped portion of the folded-plate roof can be firmly maintained, thereby making it possible to construct an extremely strong and durable suspended folded-plate roof.

In the invention of claim 2, the expansion fixture has an extremely simple structure with two identical right and left expansion plates and bolts and nuts, and the two expansion main plate sections can be made horizontal by tightening the bolts and nuts, and the two support plate sections are abutted against the other side of the expansion main plate section, thereby stabilizing the horizontal state of the two expansion main plate sections. This makes it possible to maintain a strong fit between the two supports in the width direction (Y direction) of the mountain-shaped section of the folded plate roof, and ultimately to construct a strong suspended folded plate roof.

In the invention of claim 3, the support plate portions of the right and left extension plates of the extension fixture are positioned lower than the main extension plate portions, and the widthwise outer ends of the main extension plate portions are formed with downward pressing edges, so that the main extension plate portions change from a roughly "V" shape to a horizontal shape when tightened with bolts and nuts, making it easier for the right and left extension plates to become horizontal in the narrow space inside the angle-shaped portion of the folded plate roof.

In the invention of claim 4, the support plate portions of the right and left extension plates of the extension fixture are positioned above both of the extension main plate portions, and the widthwise outer ends of both of the extension main plate portions are formed with pressing edges facing upwards. By tightening the bolts and nuts, the two extension main plate portions change from a roughly V-shaped state to a horizontal state, making it easier to position the extension fixture inside the mountain-shaped portion of the folded plate roof.

In the inventions of claims 5 and 6, the expansion fixing device has a simple structure and can be made relatively small in size, making it easy to place inside the mountain-shaped portion of the folded plate roof. In the invention of claim 7, the hanging screw portion is fixed to the U-shaped locking portion, and the upper hanging member and the lower hanging member are connected by the hanging screw portion of the upper hanging member and a nut, so that the hanging screw portion and the nut can be tightened to attach the upper hanging member to the hanging structural material and connect the upper hanging member and the lower hanging member only by the hanging screw portion. In the invention of claim 8, the upper hanging member and the lower hanging member are connected and fixed by welding, so that the upper hanging member and the lower hanging member can be approximately integrated, and the number of parts can be reduced.

In the invention of claim 9, the suspended structural material is basically first installed, and then a folded-plate roof suspending device consisting of an upper suspending member and a lower suspending member is installed on the flange of the suspended structural material, the folded-plate roof material is installed on the lower suspending member, and the expansion fixing device is installed on the mountain-shaped portion. This method allows the construction of the suspended folded-plate roof to be done from above to below. In other words, construction can be done from the position of the suspended structural material to the downward side, making construction work extremely easy, significantly improving construction efficiency and achieving extremely good work.

FIG. 1A is a perspective view of a building using a suspended folded plate roof of the present invention as a eave, and FIG. 1B is a front view of the building shown in FIG. 1A is a schematic front view of the suspended folded plate roof of the present invention, FIG. 1B is an enlarged view of a main part of FIG. 1A, and FIG. 1C is an enlarged view of part (α) of FIG. 1A is an oblique view of a folded plate roof hanger with the upper hanging member and the lower hanging member separated, FIG. 1B is a longitudinal front view of the upper hanging member and the lower hanging member separated, and FIG. 1C is a longitudinal side view of the upper hanging member attached to the flange portion of the hanging structure. (A) is a side view of the main part of a folded plate roof attached to a hanging structural material using a folded plate roof hanger, (B) is a cross-sectional view of the main part of (A), (C) is an oblique view of the main part of a folded plate roof hanger attached to a hanging structural material, and (D) is a front view of the main part of a state in which a folded plate roof is supported by a folded plate roof hanger using a different type of lower hanging member. (A) is an exploded oblique view of the descending type of the first embodiment of the expansion fixture, (B) is an oblique view of the expansion fixture, (C) is a longitudinal front view of the expansion fixture, (D) is an exploded front view of the expansion fixture, and (E) (I), (II), and (III) are plan oblique views showing the process of assembling the right extension plate and the left extension plate of the expansion fixture. (A) is a front view of the first embodiment of the descending type of expansion fixture in a state where the fastening member is loosened and the right and left extension plates form a "V" shape, (B) is a diagram of the expansion fixture in a state where the fastening member is tightened and the right and left extension plates are horizontal, (C) (I), (II), and (III) are front views of key parts showing the operation of the inclined step portions and biting groove portions of the right and left extension plates of the expansion fixture, and (D) (I), (II), and (III) are front views of key parts showing the process of attaching the first embodiment of the descending type of expansion fixture to the mountain-shaped portion of a corrugated plate roof. (A) is an exploded front view of the rising type of the first embodiment of the expansion fixture, (B) is a front view of the expansion fixture in a state where the fastening member is loosened and the right and left extension plates form a "U" shape, (C) is a view of the expansion fixture in a state where the fastening member is tightened and the right and left extension plates are horizontal, and (I), (II), and (III) of (D) are front views of key parts showing the process of attaching the rising type of the first embodiment of the expansion fixture to the mountain-shaped portion of a corrugated roof. (A) is a front view of a second embodiment of the expansion fixture in which the fastening member has been loosened to place the right and left extension plates in their set pre-width state; (B) is a front view of the expansion fixture in which the fastening member has been tightened to place the right and left extension plates in their set-completed width state; (C) is an exploded, partially cross-sectional front view of the second embodiment of the expansion fixture; (D) is a cross-sectional view taken along the Y1-Y1 arrow of (C); (I), (II), and (III) of (E) are process diagrams showing the operation of the inclined guide surface and the inclined guide surface when the right and left extension plates expand in the width direction (Y direction); and (I), (II), and (III) of (F) are front views of key parts showing the process of attaching the second embodiment of the expansion fixture to the mountain-shaped portion of a corrugated roof. (A) is an exploded oblique view of the third embodiment of the expansion fastener, (B) is an oblique view of the third embodiment of the expansion fastener, (C) is a longitudinal front view of the third embodiment of the expansion fastener, (D) is a plan view of the third embodiment of the expansion fastener, (E) is a front view of the main parts of the third embodiment of the expansion fastener attached to the mountain-shaped portion of a folded plate roof, and (F) is a plan view of the main parts of the third embodiment of the expansion fastener attached to the mountain-shaped portion of a folded plate roof. (I), (II), and (III) of (A) are side views of the main parts showing the process of attaching the upper hanging member and the lower hanging member of the folded plate roof hanging device to the flange portion of the hanging structural material, and (B) is a front view of the process of attaching the upper hanging member of the folded plate roof hanging device to the hanging structural material while connecting the lower hanging member to the upper hanging member. (A) is a front view of the process of attaching a folded roof panel to a folded roof hanger attached to a hanging structural material, (B) is a front view of the process of attaching an expansion fastener to the folded roof panel attached to the hanging structural material via a folded roof hanger, and (C) is a front view of a suspended folded roof after construction has been completed in which an expansion fastener is attached to the folded roof panel attached to the hanging structural material via a folded roof hanger. 1A is a front view showing an embodiment of the shape of the folded roof panel material used in the suspended folded roof of the present invention, (B) is an enlarged view of the (β) part of (A), (C) is an enlarged view of the (γ) part of (A), (D) is a front view of the main part forming a mountain-shaped part in which the lower interlocking mountain-shaped part and the upper interlocking mountain-shaped part of the folded roof panel material overlap, and (E) is a front view of another embodiment of the folded roof panel material.

Below, an embodiment of the present invention will be described with reference to the drawings. In the present invention, the terms X direction and Y direction are used to indicate directions. In the present invention, the width direction of the folded plate roof hanger A and the longitudinal direction of the hanging structural material 8 to which the folded plate roof hanger A is attached are defined as the Y direction, and the direction perpendicular to the Y direction on a horizontal plane is defined as the X direction.

In the following text, the X direction is also referred to as the front-to-rear direction. The Y direction is also referred to as the width direction. Therefore, the longitudinal direction of the folded-plate roofing panel material 9 that constitutes the folded-plate roof C is the X direction. The X and Y directions are described in the main places in the figures. In the components of the present invention described below, all references to the directions shall follow the above-mentioned X and Y directions.

The suspended folded-plate roof of the present invention mainly comprises a folded-plate roof material 9, a folded-plate roof hanger A, an expansion fastener B, and a suspended structural member 8 made of shaped steel such as an H-shaped steel (see Figure 2). The folded-plate roof hanger A is composed of an upper hanging member A1 and a lower hanging member 4. The folded-plate roof hanger A, which is composed of the upper hanging member A1 and the lower hanging member 4, is attached to the lower flange portion 81 of the suspended structural member 8 (see Figures 2(B), (C), 3, 4, etc.).

A number of folded-plate roof panel materials 9 are suspended from the suspended structural material 8 via the folded-plate roof suspension device A, and a folded-plate roof C is formed by arranging a number of folded-plate roof panel materials 9 in parallel. A suspended folded-plate roof is formed by the suspended structural material 8 and the folded-plate roof suspension device A, or a eaves is formed by the folded-plate roof C together with the suspended structural material 8 and the folded-plate roof suspension device A, etc. (see Figures 1 and 2).

The upper hanging member A1 of the folded plate roof hanging device A is composed of a base portion 1, a U-shaped locking portion 2, and a hanging screw portion 3 (see Figures 3 (A) and (B)). The base portion 1 is composed of a substantially rectangular base bottom plate 11 and rising side plates 12, 12, and the rising side plates 12, 12 are formed along the X direction (front-back direction) from both long sides of the base bottom plate 11 (see Figures 3 (A) and (B)).

A through hole 13 is formed in the base bottom plate 11 of the base portion 1, and the through hole 13 is the portion through which the screw shaft 31 of the hanging screw portion 3 passes (see FIG. 3(B)). The U-shaped locking portion 2 is made up of an upper locking plate piece 21, a lower locking plate piece 22, and a connecting piece 23, each of which has a generally U-shaped cross section, and is formed so that the upper locking plate piece 21, the lower locking plate piece 22, and the connecting piece 23 form a generally U-shaped cross section (see FIG. 3(A), (C), FIG. 4, etc.).

Specifically, the U-shaped locking portion 2 is integrally formed from a band-shaped metal plate so that its cross section is roughly U-shaped, and a connecting piece 23 is formed in a roughly pendant manner from one end of a roughly square upper locking plate piece 21, which is formed so as to extend from the lower end of the connecting piece 23 in the same direction as the upper locking plate piece 21 (see Figures 3 and 4). The upper locking plate piece 21 and the lower locking plate piece 22 have the same or roughly the same length in the front-to-rear direction. In addition, a linear reinforcing rib 24 with a roughly semicircular cross section is formed across the upper locking plate piece 21 and the connecting piece 23.

The connecting piece 23 is a part that connects the upper locking plate piece 21 and the lower locking plate piece 22, and is formed perpendicular to the upper locking plate piece 21 and the lower locking plate piece 22. In the U-shaped locking part 2, the part located on the opposite side to the connecting piece 23 is simply an opening, and this opening is called the inserted part 25. The flange part 81 of the hanging structural material 8, which is an H-shaped steel, is inserted into the U-shaped locking part 2 from the inserted part 25 [see Figures 3(C) and 4(B)].

The upper and lower retaining plates 21 and 22 are formed to be approximately parallel with an appropriate distance between them. The distance between the upper and lower retaining plates 21 and 22 is large enough to allow the end of the flange 81 of the suspension structure 8 (described later) to be inserted, and is large enough to allow the flange 81 of a relatively large steel beam to be inserted (see FIG. 10(A)).

The hanging screw 3 is attached facing downward to the lower locking plate 22 of the U-shaped locking portion 2 (see Figure 3). The screw shaft 31 of the hanging screw 3 is provided with a nut 32 and a spring washer that screw into it. A flat-head bolt is preferably used for the hanging screw 3, and the bolt head is preferably in the shape of a flat disk. The screw shaft 31 is fixed by forming a through hole 22b at approximately the middle position of the lower locking plate 22 and pressing the screw shaft 31 of the hanging screw 3 into the through hole 22b. Although not specifically shown, the screw shaft 31 may also be fixed to the lower locking plate 22 by welding.

The longitudinal lengths of the upper and lower locking plates 21 and 22 of the U-shaped locking portion 2 are the same, but the upper locking plate 21 may be shorter than the longitudinal length of the lower locking plate 22. If the metal strength of the U-shaped locking portion 2 is extremely strong, the length of the lower locking plate 22 may be extremely short.

The length dimension Wb in the width direction (Y direction) of the U-shaped locking portion 2 is smaller than the distance Wa between the inner sides of the two rising side plates 12, 12 on both sides of the base portion 1 in the width direction (Y direction). In other words, Wb < Wa (see FIG. 3 (B)). Here, the length dimension Wb in the width direction (Y direction) of the U-shaped locking portion 2 is set smaller than the distance Wa so that the U-shaped locking portion 2 cannot rotate between the two rising side plates 12, 12. Therefore, it is preferable that the length dimension Wb is slightly smaller than the distance Wa.

Then, the screw shaft 31 of the hanging screw part 3 of the U-shaped locking part 2 is inserted into the through hole 13 formed in the base bottom plate 11 of the base part 1, and the U-shaped locking part 2 is disposed between the two rising side plates 12, 12 of the base part 1 and on the base bottom plate 11 (see Figs. 2(C), 4(C), (D)). With the U-shaped locking part 2 housed in the base part 1, the distance between the upper edge 12a of the rising side plate 12 of the base part 1, the lower surface side 21a of the upper locking plate piece 21 of the U-shaped locking part 2, and the upper edge 12a of the rising side plate 12 is set to K (see Figs. 3(C) and 10(A)). When the nut 32 of the hanging screw part 3 is tightened against the screw shaft 31, the overlapping portion increases and becomes larger, and the distance K becomes smaller accordingly (see Fig. 3(C)).

As the upper part of the U-shaped locking part 2 is housed within the two rising side plates 12, 12 of the base part 1, the vertical distance between the lower surface 21a of the upper locking plate piece 21 of the U-shaped locking part 2 and the upper edge 12a of the rising side plate 12 gradually narrows, and the distance K becomes smaller. This is a configuration that can accommodate various thicknesses of the flange part 81 of the hanging structure material 8. In other words, the distance K is the same as or slightly smaller than the thickness of the flange part 81. The lower side of the U-shaped locking part 2 is housed within the base part 1, and in this state, both ends of the U-shaped locking part 2 in the Y direction are surrounded by the two rising side plates 12, 12 and cannot rotate, and the U-shaped locking part 2 is fixed in the horizontal rotation direction relative to the base part 1.

Next, we will explain the hanging member 4. The hanging member 4 is used as a folded-plate roof hanging device A by joining it to the lower part of the upper hanging member A1. The hanging member 4 is composed of a clamping top part 41, hanging legs 42, 42, and fitting parts 43, 43 (see Figures 2, 3(A), (B), and 4(C)).

The clamping top 41 has a generally rectangular gate shape, with a flat top surface 41a and hanging pieces 41b, 41b formed from both ends of the top surface 41a in the width direction (Y direction). Hanging legs 42, 42 are formed from the lower ends of the hanging pieces 41b, 41b, and fitting parts 43, 43 are formed at the lower parts of the hanging legs 42, 42, specifically from their lower ends, protruding inward in the width direction (Y direction) of the hanging member 4 (see Figures 3(A) and (B)).

The fitting portion 43 is bent at a substantially right angle from the lower end of the hanging leg 42 toward the inside of the hanging member 4, and then bent in a straight line upward from the inner end of the bent portion, so that the fitting portion 43 is generally formed in a substantially "J" shape and an inverted substantially "J" shape as a whole (see Figures 3(A) and (B)). When the fitting portion 43 is generally "J" shaped, its tip portion fits so as to bite into the fitting portion 94 of the mountain-shaped portion 9T of the folded plate roof C described below (see Figure 2(C)).

In addition, another shape of the fitting portion 43 is one in which it is bent at a substantially right angle from the lower end of the hanging leg 42 toward the inside, and then bent from the inner end further downward in a straight line along the inclination direction of the hanging leg 42, so that it is formed into a substantially L-shape and an inverted substantially L-shape overall (see FIG. 4(D)). When the fitting portion 43 is substantially L-shaped, the bent portion of the substantially L-shape fits so as to bite into the fitting portion 94 of the mountain-shaped portion 9T of the folded plate roof C described below (see FIG. 4(D)).

The top surface 41a is formed with a connecting through hole 44, through which the hanging screw portion 3 of the upper hanging member A1 is inserted. The clamping top 41, both hanging legs 42, 42, and both fitting portions 43, 43 are integrally formed from a single metal strip by pressing or the like. The top of the clamping top 41 is the portion that is connected to the upper hanging member A1. It is preferable that the upper hanging member A1 is connected so that its center in the width direction (Y direction) coincides or nearly coincides with the center in the width direction (Y direction) of the clamping top 41 of the lower hanging member 4.

The hanging legs 42, 42 and the fittings 43, 43 of the hanging member 4 have a predetermined length in the depth direction, i.e., the X direction. Specifically, when the clamping top 41 is rectangular and the X direction is the long side, the length dimension in the X direction of the hanging legs 42 and the fittings 43 is equal to the long side of the clamping top 41 (see FIG. 3(A)).

The lower hanging member 4 is joined to the lower part of the upper hanging member A1, specifically, the face 41a of the clamping top 41 of the lower hanging member 4 is joined to the underside of the base bottom plate 11 of the base part 1 of the upper hanging member A1. Then, the hanging screw part 3 attached to the U-shaped locking part 2 of the upper hanging member A1 penetrates the base bottom plate 11 and the clamping top 41, and is tightened to the hanging screw part 3 by the spring washer 33 and the nut 32, and the upper hanging member A1 and the lower hanging member 4 are joined (see Figures 2(C), 3, and 4(B)).

At this time, the U-shaped locking portion 2 approaches the base bottom plate 11 of the base portion 1 as the hanging screw portion 3 and nut 32 are tightened. As a result, the flange portion 81 of the hanging structural member 8 is clamped and fixed between the lower surface side 21a of the upper locking plate piece 21 of the U-shaped locking portion 2 and the upper edges 12a, 12a of the rising side plates 12, 12 of the base portion 1 [see Figures 4(A), (B), (C) and Figure 10(A)].

There is also an embodiment in which the upper hanging member A1 and the lower hanging member 4 are connected and fixed by welding. In this embodiment, the lower surface side of the base bottom plate 11 of the base part 1 of the upper hanging member A1 and the clamping top part 41 of the lower hanging member 4 are connected and fixed by welding. In this embodiment, the hanging screw part 3 and the nut 32 of the upper hanging member A1 no longer serve to connect the upper hanging member A1 and the lower hanging member 4, but they still serve to clamp and fix the flange part 81 of the hanging structural material 8 by the U-shaped locking part 2 and the base part 1. In this embodiment, the welding of the upper hanging member A1 and the lower hanging member 4 is performed in advance at a factory, and the folded plate roof hanging tool A consisting of the upper hanging member A1 and the lower hanging member 4 connected by welding is brought to the site where the suspended folded plate roof is to be constructed, and the folded plate roof is constructed.

Next, the expansion fixture B will be described. The expansion fixture B is inserted into the mountain-shaped portion 9T of the folded plate roof C and expands in the width direction (Y direction) within the mountain-shaped portion 9T to be installed across the two fitted portions 94, 94 of the mountain-shaped portion 9T, thereby maintaining a predetermined distance between the two fitted portions 94, 94 so that the distance between them does not narrow, and serves to firmly maintain the fitted state between the fitting portions 43, 43 of the hanging member 4 of the folded plate roof hanger A and the fitted portions 94, 94 of the mountain-shaped portion 9T.

The expansion fixture B is provided between the vicinity of the location where the two fitted parts 94, 94 are formed in the width direction (Y direction) of the mountain-shaped part 9T of the folded plate roof C, and serves to maintain the distance between the two opposed fitted parts 94, 94 on both sides of the width direction (Y direction) of the mountain-shaped part 9T at a predetermined distance so that the distance does not narrow when the two opposed fitted parts 94, 94 of the mountain-shaped part 9T of the folded plate roof C are fitted and fixed to the two fitting parts 43, 43 of the lower hanging member 4 of the folded plate roof hanger A (see Figures 2(B) and (C)). The mountain-shaped part 9T will be described later.

The folded plate roof C is suspended from the hanging structure 8 by the engagement parts 94, 94 on both sides of the width direction (Y direction) of the mountain-shaped portion 9T being clamped and engaged with the engagement parts 43, 43 of the lower hanging member 4 of the folded plate roof hanger A (see Figures 2(B) and (C)). Then, to further strengthen the engagement between the engagement parts 43, 43 of the expansion fixture B and the engagement parts 94, 94 of the mountain-shaped portion 9T of the folded plate roof C, the expansion fixture B is installed inside the mountain-shaped portion 9T.

In other words, if the distance between the two fitted parts 94, 94 in the width direction (Y direction) of the mountain-shaped part 9T becomes narrow for some reason, the fitting force between the fitting parts 43, 43 of the lower hanging member 4 of the folded-plate roof hanging device A will weaken, and the folded-plate roof material 9 may fall from the folded-plate roof hanging device A. To prevent such a situation, the expansion fixing device B abuts against the two fitted parts 94, 94 of the mountain-shaped part 9T of the folded-plate roof C near the locations of the two fitted parts 94, 94, and acts as a "stop bar" or "bracing member" to maintain a predetermined distance so that the distance between the two fitted parts 94, 94 does not narrow [see Figures 2(B), (C), Figures 6(D), 7(D), etc.].

More specifically, the expansion fixing device B is provided over the vicinity of the upper side of both fitted portions 94, 94 in the width direction (Y direction) of the mountain-shaped portion 9T. Here, the predetermined distance refers to the distance between the opposing fitted portions 94, 94 of the mountain-shaped portion 9T or between the vicinity of the fitted portions 94, 94 when the fitted portions 94, 94 in the width direction (Y direction) of the mountain-shaped portion 9T and the fitted portions 43, 43 of the folded plate roof hanger A are firmly and stably fitted together.

There are multiple embodiments of the expansion fixture B. First, the first embodiment of the expansion fixture B will be described based on Figs. 5, 6, and 7. The first embodiment includes a descending type and an ascending type, and the descending type will be described based on Figs. 5 and 6. Here, the descending type refers to a type in which the right and left extension plates 5 and 6 are substantially V-shaped when the fastening member 7 is loosened, and the outer ends of the right and left extension plates 5 and 6 descend from above to below when the fastening member 7 is tightened, so that the right and left extension plates 5 and 6 become horizontal. On the other hand, the ascending type refers to a type in which the right and left extension plates 5 and 6 are substantially V-shaped when the fastening member 7 is loosened, and the outer ends of the right and left extension plates 5 and 6 rise from below to above when the fastening member 7 is tightened, so that the right and left extension plates 5 and 6 become horizontal (see Fig. 7).

The first embodiment of the descending type of expansion fixture B has two identically shaped right and left expansion plates 5 and 6, and a fastening member 7 consisting of a bolt 71 and a nut 72 (see Figs. 5(A) and (D)). Here, the right and left expansion plates 5 and 6 are named to be easily distinguishable for the sake of convenience, and as shown in Figs. 5 to 7, the one located on the right side is called the right expansion plate 5, and the one located on the left side is called the left expansion plate 6. Therefore, depending on the viewing direction, the right expansion plate 5 may be located on the left side, and the left expansion plate 6 may be located on the right side, and the right and left positions of the right and left expansion plates 5 and 6 are not limited.

The right extension plate 5 and the left extension plate 6 are the same and have the same size and shape (see Figures 5(A) and (D)). The right extension plate 5 is formed of an extension main plate part 51 with the outer end in the width direction (Y direction) as the pressing edge 51a, an inclined step part 52, and a support plate part 53. Similarly, the left extension plate 6 is formed of an extension main plate part 61 with the outer end in the width direction (Y direction) as the pressing edge 61a, an inclined step part 62, and a support plate part 63 (see Figures 5(A) and (D)).

The expansion fixture B is used when the right expansion plate 5 and the left expansion plate 6 are connected by the fastening member 7, and based on the state in which the right expansion plate 5 and the left expansion plate 6 are properly connected, the outer end in the width direction (Y direction) is the outer end of the right expansion plate 5 and the left expansion plate 6, and the center side in the width direction is the inner end of the right expansion plate 5 and the left expansion plate 6. In Figures 5 (D) and 5 (E) (I), the right end in the width direction of the right expansion plate 5 is the outer end, and the left end in the width direction is the inner end. Also, the left end in the width direction of the left expansion plate 6 is the outer end, and the right end in the width direction is the inner end.

The right extension plate 5 is formed in the order of the extension main plate section 51, the inclined step section 52, and the support plate section 53, which are formed continuously from the outer end side to the inner end side in the width direction (Y direction) of the right extension plate 5 (see Figs. 5(A) and (D)). In other words, the right extension plate 5 is formed so that the extension main plate section 51 is located on the inner end side in the width direction, the support plate section 53 is formed on the outer end side in the width direction, and the inclined step section 52 is located between the extension main plate section 51 and the support plate section 53 (see Figs. 5(D) and (I) in Fig. 5(E)).

Similarly, the main extension plate portion 61, the inclined step portion 62, and the support plate portion 63 are formed in succession from the inner end side in the width direction of the left extension plate 6. In other words, the main extension plate portion 61 is located on the inner end side in the width direction of the left extension plate 6, the support plate portion 63 is formed on the outer end side in the width direction, and the inclined step portion 62 is formed to be located between the main extension plate portion 61 and the support plate portion 63 (see Figures 5(D) and (I) in Figure 5(E)).

When the right extension plate 5 is positioned horizontally, the extension main plate portion 51 is located above the support plate portion 53, and specifically, an inclined step portion 52 is formed so as to slope downward from the outer end side of the extension main plate portion 51 toward the inner end side of the support plate portion 53 (see Figures 5(A) and (D)). The height difference between the extension main plate portion 51 and the support plate portion 53 is equal to or approximately equal to the thickness dimension of one plate thickness of the plate material forming the right extension plate 5 (see Figures 5(A) and (D)).

Therefore, the inclined step portion 52 is inclined so that there is a difference of one plate thickness (see Figure 5 (D)). The extension plate portion 51 of the right extension plate 5 is set to be the largest in the width direction (Y direction), the inclined step portion 52 is set to be the smallest, and the support plate portion 53 is intermediate in size between the extension plate portion 51 and the inclined step portion 52.

Similarly, when the left extension plate 6 is placed horizontally, the extension main plate portion 61 is located above the support plate portion 63, and specifically, the inclined step portion 62 is formed so as to slope downward from the outer end side of the extension main plate portion 61 toward the inner end side of the support plate portion 63 (see Figures 5(A) and (D)). The height difference between the extension main plate portion 61 and the support plate portion 63 is equal to or approximately equal to the thickness dimension of one plate thickness of the plate material forming the left extension plate 6. Therefore, the inclined step portion 62 is inclined so as to have a difference of one plate thickness (see Figure 5(D)). The extension plate portion 61 of the left extension plate 6 is set to be the largest in the width direction (Y direction), the inclined step portion 62 is set to be the smallest, and the support plate portion 63 is intermediate in size between the extension plate portion 61 and the inclined step portion 62.

A biting groove 54a is formed in the inclined step 52 of the right extension plate 5 along the front-rear direction (X direction) to the middle position in the front-rear direction (see Figures 5(A) and (E)). The groove width of the biting groove 54a is the same dimension as the width direction (Y direction) of the inclined step 52, and in reality, approximately half of the inclined step 52 in the front-rear direction (X direction) is formed as the biting groove 54a.

In other words, only about half of the inclined step portion 52 is formed in the front-to-rear direction (X direction), and the remaining half is a gap. Also, the width direction (Y direction) of the biting groove portion 54 is slightly smaller than the width direction (Y direction) of the inclined step portion 52, so that only a small portion of the inclined step portion 52 remains.

The width direction (Y direction) of the biting groove portion 54 is also slightly larger than the width direction (Y direction) of the inclined step portion 52, so that the portion that constitutes the inclined step portion 52 is not left and the portion of the inclined step portion 52 is completely void. A connecting long hole 54b is formed that extends from the middle position in the front-rear direction (X direction) of the right extension plate 5 along the width direction (Y direction) centered on the inclined step portion 52 (see Figures 5(A) and (E)). The connecting long hole 54b is formed over the entire width direction (Y direction) of the inclined step portion 52 and over part of the width direction (Y direction) of the extension main plate portion 51 and the support plate portion 53 (see (I) of Figure 5(E)).

Similarly, a biting groove 64a is formed in the inclined step 62 of the left extension plate 6 along the front-rear direction (X direction) to the middle position in the front-rear direction (see Figures 5(A) and (D)). The groove width of the biting groove 64a is the same dimension as the width direction (Y direction) of the inclined step 62, and in reality, approximately half of the inclined step 62 in the front-rear direction (X direction) is formed as the biting groove 64a.

In other words, only about half of the inclined step portion 62 is formed in the front-rear direction (X direction), and the remaining half is a gap. A connecting long hole 64b is formed that extends from the middle position in the front-rear direction (X direction) of the left extension plate 6 along the width direction (Y direction) with the inclined step portion 62 as the center. The connecting long hole 64b is formed over the entire width direction (Y direction) of the inclined step portion 62 and over part of the width direction (Y direction) of the extension main plate portion 61 and the support plate portion 63 [see (I) in Figure 5 (E)].

The right extension plate 5 and the left extension plate 6 are then arranged symmetrically in the width direction (Y direction) (see (I) of Figures 5(A), (D), and (E)). The biting groove portion 54a of the right extension plate 5 and the biting groove portion 64a of the left extension plate 6 are engaged with each other, and the inclined step portion 62 and the inclined step portion 52 of the other are joined by biting into the biting groove portion 54 and the biting groove portion 64, respectively (see (II) of Figure 5(E)).

The right and left extension plates 5 and 6 are then set so that their fore-aft directions (X direction) are aligned (see FIG. 5E (III)). At this time, the inclined step 62 of the left extension plate 6 is inserted into the biting groove 54 of the right extension plate 5, and the inclined step 52 of the right extension plate 5 is inserted into the biting groove 64 of the left extension plate 6, and the connecting long hole 54b of the right extension plate 5 and the connecting long hole 64b of the left extension plate 6 are aligned in the fore-aft direction (X direction) (see FIG. 5E (III)).

The bolt 71 of the fastening member 7 is inserted through the long connecting holes 54b and 64b of the right and left extension plates 5 and 6, and the right and left extension plates 5 and 6 are connected by the nut 72 via the spring washer 73 as necessary (see Figures 5(A) to (C)). Here, the nut 72 of the fastening member 7 is set so that it is positioned on the underside of the expansion fixture B (see Figures 6(A) and (B)).

Then, with the bolts 71 and nuts 72 of the fastening members 7 loosened, the right extension plate 5 and the left extension plate 6 can be folded into a roughly "V" shape with their outer ends facing upwards, centered on the points where their respective biting grooves 54 and 64 bite into each other (see Figure 6(A)).

Here, the widthwise (Y-direction) dimension between the outer ends of the right and left extension plates 5 and 6 when the right and left extension plates 5 and 6 are folded into a roughly "V" shape is referred to as the pre-set width. And, the widthwise (Y-direction) dimension between the outer ends of the right and left extension plates 5 and 6 when the fastening member 7 is fastened and the right and left extension plates 5 and 6 become flat is referred to as the set width (see Figures 6(A) and (B)).

When the bolts 71 and nuts 72 of the fastening members 7 are tightened, the outer ends of the extended main plate sections 51 and 61 in the width direction (Y direction) gradually lower, and the extended main plate sections 51 and 61 can expand in the width direction (Y direction) from a roughly "V"-shaped folded state (see FIG. 6A) to a horizontal state (see FIG. 6B).

When the right extension plate 5 and the left extension plate 6 are horizontal, the support plate portion 53 of the right extension plate 5 abuts against the underside of the main extension plate portion 61 of the left extension plate 6, and the support plate portion 63 of the left extension plate 6 abuts against the underside of the main extension plate portion 51 of the right extension plate 5, thereby reliably maintaining the horizontal state of the main extension plate portion 51 and the main extension plate portion 61 (see Figure 6 (B)).

When the right and left extension plates 5 and 6 are horizontally positioned with the fastening members 7 fastened, the maximum width dimension or set width dimension of the expansion fixture B in the width direction (Y direction) is the same as or greater than the distance between the inclined side pieces (92b, 93b) directly above or near the opposing mating parts 94, 94 of the mountain-shaped part 9T of the folded plate roof C. Even in this case, it is preferable that the distance is slightly larger so that the mating parts 94, 94 are always pressed down with an appropriate pressure (see Figure 2(C) and (III) in Figure 6(D)).

The process of installing the lowering type of the first embodiment of the expansion fixture B inside the mountain-shaped portion 9T of the folded plate roof C will be described. From below the mountain-shaped portion 9T of the folded plate roof C, the right expansion plate 5 and the left expansion plate 6 of the expansion fixture B gradually increase in the width direction (Y direction) dimension during the process of expanding horizontally from a substantially "V"-shaped bent state [see (I) of Figures 6(A) and (D)] [see (II) of Figures 6(A) and (D)], and when the right expansion plate 5 and the left expansion plate 6 reach a horizontal state [see (III) of Figures 6(B) and (D)], the fitting portions 43, 43 inside the mountain-shaped portion 9T fit into the opposing fitted portions 94, 94 of the mountain-shaped portion 9T of the folded plate roof C [see (III) of Figure 6(D)].

For the descending type of the first embodiment, the support plate portion 53 of the right extension plate 5 is positioned below the main extension plate portion 51, and a pressing edge 51a is formed downward at the widthwise outer end of the main extension plate portion 51 (see FIG. 5(D)). Similarly, the support plate portion 63 of the left extension plate 6 is positioned below the main extension plate portion 61, and a pressing edge 61a is formed downward at the widthwise outer end of the main extension plate portion 61 (see FIG. 5(D)).

In addition, the pressing edge 51a of the main extension plate portion 51 in the right extension plate 5 and the pressing edge 61a of the extension plate portion 61 in the left extension plate 6 are not folded downward or upward as described above, but may be formed by simply bending the outer edge portions of the extension plate portion 51 and the extension plate portion 61 as the pressing edge 51a and the pressing edge 61a, respectively.

As a result, the right extension plate 5 and the left extension plate 6 form an approximate "V" shape before being set, and by tightening the bolts 71 and nuts 72 of the fastening member 7, the right extension plate 5 and the left extension plate 6 set in an approximate "V" shape become horizontal (see Figures 6(A) and (B)). The action of the process in which the right extension plate 5 and the left extension plate 6 move from a folded state to a horizontal state by tightening the fastening member 7 is mainly centered around the meshing points of the two biting grooves 54a, 64a (see Figure 6(C)).

Then, when the right and left extension plates 5 and 6 are folded in a V-shape and fastened by the fastening members 7 (bolts 71 and nuts 72), the inclined steps 52 and 62 come into contact with the periphery of the corresponding biting grooves 64 and 54 into which they are inserted, and the biting grooves 64 and 54 slide along the inclined surfaces of the corresponding inclined steps 52 and 62 as the right and left extension plates 5 and 6 expand so that they become horizontal. As they approach horizontality, the widthwise (Y-direction) dimension of the expansion fixture B expands (see (I) to (III) in FIG. 6C). The right and left extension plates 5 and 6 transition from the V-shaped folded state to a horizontal state extremely smoothly due to the engagement of the biting grooves 64 and 54 with the corresponding inclined steps 52 and 62.

Next, in the first embodiment of the rising type, the support plate portion 53 of the right extension plate 5 is positioned above the main extension plate portion 51, and the outer width end of the main extension plate portion 51 is formed with a pressing edge 51a facing upward (see Figs. 7(A) and (C)). Similarly, the support plate portion 63 of the left extension plate 6 is positioned above the main extension plate portion 61, and the outer width end of the main extension plate portion 61 is formed with a pressing edge 61a facing upward (see Figs. 7(A) and (C)).

As a result, the right extension plate 5 and the left extension plate 6 are roughly shaped like the letter "V" before they are set together, and when the bolts 71 and nuts 72 of the fastening members 7 are tightened, the right extension plate 5 and the left extension plate 6, which are set in a roughly shaped "V", change from the shaped "V" to a horizontal shape (see (I), (II), and (III) in FIG. 7(D)).

Next, a second embodiment of the expansion fixture B will be described with reference to Figure 8. This second embodiment has a right expansion plate 5, a left expansion plate 6, and a fastening member 7 with a bolt 71 (see Figures 8(A) to (D)). The right expansion plate 5 is made up of an expansion main plate section 55 and a connection plate section 56. A pressing edge 55a is formed at the outer end of the expansion main plate section 55 in the width direction (Y direction) so as to be bent upward at an angle, and an inclined guide surface 55b is formed which is inclined upward from the inner end side in the width direction (Y direction).

Furthermore, a horizontal and flat connecting plate portion 56 is formed continuously from the inner end side of the inclined guide surface 55a in the width direction (Y direction), and an internal thread portion 56a is formed in the connecting plate portion 56. The left extension plate 6 has a horizontal and flat connected plate portion 65, and a pressing edge 65a is formed on the outer end side of the connected plate portion 65 in the width direction (Y direction) that is bent upward at an incline, and an inclined guide surface 65b is formed on the inner end side of the connected plate portion 65 in the width direction (Y direction) that is inclined downward.

The inclined guide surface 55a of the right extension plate 5 and the inclined guide surface 65b of the left extension plate 6 are inclined in the same direction and have the same inclination angle. Therefore, when the right extension plate 5 and the left extension plate 6 are overlapped and are fastened by the fastening member 7, the inclined guide surface 55a and the inclined guide surface 65b are in surface contact, allowing them to slide smoothly against each other.

Furthermore, the connected plate portion 65 has a long hole 65c formed in the longitudinal direction along the width direction (Y direction). The right extension plate 5 and the left extension plate 6 are arranged in a vertical direction, with the right extension plate 5 on top and the left extension plate 6 on the bottom. The threaded shaft of the bolt 71 of the fastening member 7 is inserted into the internal thread portion 56a of the right extension plate 5 and the long hole 65c of the left extension plate 6 from the long hole 65c side, and the bolt 71 is screwed into the internal thread portion 56a of the right extension plate 5 [see Figures 8(C) and (D)].

The right extension plate 5 has an internal thread 56a, which is formed by welding a nut to the upper surface of the connection plate 56 at the through hole (see Figs. 8A-D). Alternatively, although not shown, a through hole is drilled in the connection plate 56, and an internal thread is formed in the through hole to form the internal thread 56a. The right extension plate 5 and the left extension plate 6 are connected by a bolt 71. When the bolt 71 is loosely set, the long hole 65c of the left extension plate 6 allows the right extension plate 5 and the left extension plate 6 to move relative to each other in the width direction (Y direction).

In addition, guide pieces 56b, 56b are formed on both sides of the connection plate portion 56 of the right extension plate 5 in the front-rear direction (X direction) [see Figures 8(A) to (D)]. When the right extension plate 5 and the left extension plate 6 are overlapped in the vertical direction, the guide pieces 56b, 56b embrace both ends of the connection plate portion 65 of the left extension plate 6 in the front-rear direction (X direction). As a result, the right extension plate 5 and the left extension plate 6 are overlapped, and as an expansion fixing device B, it can slide in a substantially straight line in the longitudinal direction when performing an expansion operation in the width direction (Y direction), and it can be installed inside the mountain-shaped portion 9T, and the expansion work can be performed in a stable state.

Then, by tightening the bolt 71, the inclined guide surface 55a of the right extension plate 5 and the inclined guide surface 65b of the left extension plate 6 overlap and shift relative to each other (see (I), (II), and (III) in FIG. 8(E)). As a result, the right extension plate 5 and the left extension plate 6 move outward relative to each other in the width direction (Y direction), and the expansion fixture B formed by the right extension plate 5 and the left extension plate 6 is expanded in the width direction (Y direction). As a result, the expansion fixture B is installed in the mountain-shaped portion 9T of the folded plate roof C, and the distance between the fitted portions 94, 94 on both sides of the mountain-shaped portion 9T in the width direction (Y direction) can be maintained at a predetermined distance.

When the second embodiment of the expansion fixture B is installed inside the mountain-shaped portion 9T, the longitudinal direction (Y direction) of the expansion fixture B is aligned with the front-to-back direction (X direction) of the mountain-shaped portion 9T of the folded plate roof C, making it easier to insert between the two mating portions 94, 94 of the mountain-shaped portion 9T, and the expansion fixture B can be positioned above both mating portions 94, 94, and then it can be rotated so that the width direction (Y direction) of the expansion fixture B is perpendicular to the front-to-back direction (X direction) of the mountain-shaped portion 9T.

Next, the third embodiment of the expansion fixture B will be described with reference to FIG. 9. The third embodiment of the expansion fixture B has a right expansion plate 5, a left expansion plate 6, a bolt 71, and a nut 72, which are substantially similar to the first and second embodiments. In the third embodiment, the right expansion plate 5 and the left expansion plate 6 do not have a left-right positional relationship, and the names serve to distinguish between the two. The right expansion plate 5 is a substantially rectangular plate, and any one diagonal corner is an arc-shaped corner 57a, 57a, and the other diagonal corner is a right-angled corner 57b, 57b that is an acute angle of about 80 degrees to about 90 degrees, which is close to a right angle [see FIG. 9 (A), (D), (F)]. The right expansion plate 5 has a substantially square through hole 57c.

The left extension plate 6 has the same or nearly the same external shape as the right extension plate 5. Specifically, the left extension plate 6 is a nearly rectangular plate, and any one diagonal corner is an arc-shaped corner 67a, 67a, and the other diagonal corner is a right angle corner 67b, 67b that is an acute angle of about 80 degrees to about 90 degrees, close to a right angle. In addition, a circular through hole 67c is formed in the left extension plate 6. At both front and rear ends of the right extension plate 5, nearly vertical rising side pieces 57d, 57c are formed facing upward.

The two rising side pieces 57d, 57c have an overlapping area in the width direction (Y direction) of the right extension plate 5, and are configured to sandwich and hold the square washer 58 described below. The square washer 58 is a plate piece with a roughly square shape, and is sized to fit within the two rising side pieces 57d, 57c. A roughly square through hole 58a is formed in the center of the square washer 58. The bolt 71 has a square root part 71b with a square cross section at the base of the head, and the square root part 71b of the bolt 71 is configured to be inserted into the through hole 57c of the right extension plate 5 [see Figure 9 (C)].

A plurality of square washers 58 may be provided as necessary, and in the embodiment of the present invention, two square washers 58 are provided. Then, the right extension plate 5 and the left extension plate 6 are overlapped with each other by matching the circular arc corners 57a and 67a, and the right angle corners 57b and 67b of the right extension plate 5 and the left extension plate 6, with the right extension plate 5 on top and the left extension plate 6 on the bottom. Then, the square washer 58 is placed on the upper side of the right extension plate 5, and the square root portion 71b of the bolt 71 of the fastening member 7 is inserted into the through hole 58a of the square washer 58, the through hole 57c of the right extension plate 5, and the through hole 67c of the left extension plate 6, and the nut 72 is screwed to connect the right extension plate 5, the left extension plate 6, and the square washer 58.

Then, by rotating the screw shaft portion 71a of the bolt 71, the angular root portion 71b and the right extension plate 5 rotate together. Regarding the attachment of the extension fixture B to the inside of the mountain-shaped portion 9T of the folded-plate roof C according to the third embodiment, by aligning the longitudinal direction (Y direction) of the extension fixture B with the front-to-rear direction (X direction) of the mountain-shaped portion 9T of the folded-plate roof C, it becomes easier to insert the extension fixture B between the two fitted portions 94, 94 of the mountain-shaped portion 9T, and the extension fixture B can be positioned above both fitted portions 94, 94.

Then, in this state, rotate the bolt 71 to rotate the expansion fixture B on a horizontal plane so that the width direction (Y direction) is perpendicular to the front-to-rear direction (X direction) of the angled portion 9T, and then tighten the nut 72. When the expansion fixture B is rotated on a horizontal plane within the angled portion 9T, first, rotate the arc-shaped corners 67a, 67a so that they come into contact with the vicinity of the fitted portions 94, 94, so that both arc-shaped corners 57a, 57a and both arc-shaped corners 67a, 67a begin to smoothly come into contact with the vicinity of the fitted portions 94, 94.

Finally, both right-angled corners 57b, 57b and both right-angled corners 67b, 67b come into contact with the vicinity of the fitted portions 94, 94 of the mountain-shaped portion 9T. This reduces interference between the mountain-shaped portion 9T and the expansion fixture B, allowing the expansion fixture B to be installed directly above and in close proximity to the fitted portions 94, 94 of the mountain-shaped portion 9T.

The hanging structural material 8 to which the folded-plate roof hanger A is attached serves to suspend and support the folded-plate roof panel C, which is made up of parallel folded-plate roof panel materials 9 (see Figure 1(A)). In the present invention, H-shaped steel is mainly used for the hanging structural material 8, and the flange of the H-shaped steel is used as the flange portion 81 of the hanging structural material 8. Furthermore, the hanging structural material 8 is not limited to H-shaped steel, and any type of steel may be used as long as it has a flange, such as an angle steel with an L-shaped cross section or a channel steel with a U-shaped cross section.

Next, we will explain the folded-plate roof C and the folded-plate roofing material 9 that constitutes the folded-plate roof C. The folded-plate roofing material 9 has a trapezoidal and semi-mountain-shaped lower interlocking mountain-shaped portion 92 formed on one end of a flat main plate 91 in the width direction (Y direction), and a trapezoidal and semi-mountain-shaped upper interlocking mountain-shaped portion 93 formed on the other end of the main plate 91 in the width direction (Y direction) (see Figures 12(A) to (C), etc.). The lower interlocking mountain-shaped portion 92 is composed of a top piece 92a and an inclined side piece 92b, and similarly, the upper interlocking mountain-shaped portion 93 is composed of a top piece 93a and an inclined side piece 93b (see Figures 12(A) to (C), etc.).

One of the inclined side pieces 92b, 92b on both sides of the width direction (Y direction) of the lower interlocking mountain-shaped portion 92 is continuous with the main plate 91, and the other is formed slightly above the approximate midpoint in the height direction. Similarly, one of the inclined side pieces 93b, 93b on both sides of the width direction (Y direction) of the upper interlocking mountain-shaped portion 93 is continuous with the main plate 91, and the other is formed slightly above the approximate midpoint in the height direction.

The fitted portion 94 is a linear bent portion formed in a bent shape at the midpoint in the height direction of the inclined side piece 92b of the lower fitting mountain-shaped portion 92 and the inclined side piece 93b of the upper fitting mountain-shaped portion 93. The upper side of the fitted portion 94 is formed so as to protrude outward more than the lower side (see Figures 12(B) and (C)). In the lower fitting mountain-shaped portion 92, the fitted portion 94 is formed only on one side in the width direction (Y direction) and on the side of the inclined side piece 92b that is continuous with the main plate 91. In the upper fitting mountain-shaped portion 93, the fitted portion 94 is formed on both sides in the width direction (Y direction).

Next, the process of constructing the roof portion of a suspended folded-plate roof using the folded-plate roofing material 9 will be described. On the upper fitting ridge-shaped portion 93 of one of the adjacent folded-plate roofing material 9 of adjacent folded-plate roofing material 9, 9, ... arranged side by side, the lower fitting ridge-shaped portion 92 of the other adjacent (different) folded-plate roofing material 9 is placed, the lower fitting ridge-shaped portion 92 and the upper fitting ridge-shaped portion 93 are overlapped, and the fitted portion 94 of the upper fitting ridge-shaped portion 93 and the fitted portion 94 of the lower fitting ridge-shaped portion 92 are fitted together.

In this way, the lower fitting angle-shaped portion 92 and the upper fitting angle-shaped portion 93 of adjacent folded plate roof panels 9, 9 overlap to form the folded plate roof C, which is the roof portion of the suspended folded plate roof, and its angle-shaped portion 9T (see FIG. 12(D)). In other words, the angle-shaped portion 9T of the folded plate roof C is formed by overlapping the lower fitting angle-shaped portion 92 and the upper fitting angle-shaped portion 93 and fitting their fitted portions 94 together. The angle-shaped portion 9T is formed in a roughly trapezoidal shape, and is configured so that the portion above the fitted portions 94, 94 on both sides in the width direction (Y direction) gradually narrows in the width direction (Y direction).

In addition, there is also an embodiment in which an intermediate mountain-shaped portion 95 is formed on the main plate 91 between the lower fitting mountain-shaped portion 92 and the upper fitting mountain-shaped portion 93 on both sides in the width direction (Y direction) of the folded roof panel material 9. The intermediate mountain-shaped portion 95 also has fitting portions 94, 94 formed on both sides in the width direction (Y direction) and in the middle in the height direction. The intermediate mountain-shaped portion 95 also has a top piece 95a and inclined side pieces 95b, 95b, and the fitting portions 94, 94 are formed on the inclined side pieces 95b, 95b [see Figure 12 (A)].

In addition, unlike the mountain-shaped portion 9T formed by overlapping the lower fitting mountain-shaped portion 92 and the upper fitting mountain-shaped portion 93, the intermediate mountain-shaped portion 95 constitutes the mountain-shaped portion 9T by itself. One or more intermediate mountain-shaped portions 95 are formed on one folded roof panel material 9, and when multiple intermediate mountain-shaped portions 95 are formed, they are formed so that they are equally spaced apart along with the mountain-shaped portion 9T formed by overlapping the lower fitting mountain-shaped portion 92 and the upper fitting mountain-shaped portion 93.

There are also embodiments in which the folded roof panel material 9 does not have an intermediate angle-shaped portion 95, and is composed only of a lower fitting angle-shaped portion 92 and an upper fitting angle-shaped portion 93 (see FIG. 12(E)). Whether or not the folded roof panel material 9 has an intermediate angle-shaped portion 95, the folded roof C will have multiple angle-shaped portions 9T arranged at equal intervals.

The overall structure of the suspended folded-plate roof of this invention will be described when it is used as a canopy. Suspended structural members 8 made of steel such as H-shaped steel are arranged with their longitudinal direction along the Y direction. Multiple suspended structural members 8 are arranged side by side at a specified interval in the X direction (see Figure 1(A)). In Figure 1, there are two suspended structural members 8, but there may be three or more depending on the length of the folded-plate roof C in the front-to-rear direction (X direction).

The upper hanging member A1 of the folded-plate roof hanging device A is attached to the flange portion 81 of the hanging structural material 8, which is an H-shaped steel (see FIG. 10(A)). As described above, the upper hanging member A1 is sandwiched between the base portion 1, the U-shaped locking portion 2, and the hanging screw portion 3 and placed on the lower flange portion 81 of the hanging structural material 8 (see FIG. 10(A)(II)). Then, the lower hanging member 4 is joined to the base portion 1 of the upper hanging member A1 by the hanging screw portion 3 and the nut 32, and the U-shaped locking portion 2 and base portion 1 are attached and fixed to the flange portion 81 by tightening the nut 32 (see FIG. 10(A)(III)).

In the longitudinal direction (Y direction) of the hanging structural material 8, multiple folded roof hangers A, A, ... are attached at a predetermined interval (see Figure 10 (B)). Then, the lower fitting angle-shaped portion 92 and the upper fitting angle-shaped portion 93 of the folded roof panel material 9 are attached to the lower hanging member 4 of each folded roof hanger A attached to the hanging structural material 8 (see Figure 11 (B)).

When attaching the folded roof panel material 9 to the hanging member 4, the folded roof panel material 9 is pushed up from a position below the hanging member 4 toward the hanging member 4 located above it, and the fitted portions 94 of the lower fitting ridge-shaped portion 92 and upper fitting ridge-shaped portion 93 of the folded roof panel material 9 are set to fit into the fitting portions 43, 43 of the hanging member 4 (see Figure 11 (B)).

The lower fitting angle-shaped portion 92 is attached to the lower hanging member 4 of the folded roof hanging device A only in the case of the folded roof panel material 9 located at the very end in the width direction (Y direction) that constitutes the folded roof C, and the lower fitting angle-shaped portion 92 of the other folded roof panel materials 9 is superimposed under the upper fitting angle-shaped portion 93 of the existing folded roof panel material 9.

Then, another folded roof material 9 is pushed up from below the existing folded roof material 9 attached to the folded roof hanging tool A onto the folded roof panel material 9 attached to the hanging structural material 8 by the folded roof hanging tool A, and the lower fitting ridge-shaped portion 92 of the other folded roof panel material 9 is overlapped with the upper fitting ridge-shaped portion 93 of the existing folded roof panel material 9 and the fitted portions 94 are fitted together, and the upper fitting ridge-shaped portion 93 of this other folded roof panel material 9 is attached to the lower hanging member 4 of the other folded roof hanging tool A as it is. Also, if the folded roof panel material 9 has an intermediate ridge-shaped portion 95, the intermediate ridge-shaped portion 95 is pushed up to the folded roof hanging tool A in the same manner as the upper fitting ridge-shaped portion 93, and overlapped and the fitting portions 43, 43 and the fitted portions 94, 94 are fitted together.

In this way, the folded roof panel 9 is fixed and supported below the hanging structural member 8 via the folded roof hanger A, and multiple folded roof panels 9, 9, ... are arranged side by side below the hanging structural member 8. Then, the fitting parts 43, 43 on both sides of the width direction (Y direction) of the lower hanging member 4 of the folded roof hanger A are formed by the lower fitting angle-shaped part 92 and the upper fitting angle-shaped part 93 of the folded roof panel 9, and the inner side of each of the angle-shaped parts 9T formed by the intermediate angle-shaped part 95 is installed with an expansion fixing device B [see Figures 10 (B) and (C)].

The expansion fixture B serves to maintain the engagement between the engagement portions 94, 94 formed on both sides in the width direction (Y direction) of the mountain-shaped portion 9T, 9T, ..., which is formed by overlapping the lower engagement mountain-shaped portion 92 and the upper engagement mountain-shaped portion 93, and the intermediate mountain-shaped portion 95, and the engagement portions 43, 43 of the lower hanging member 4 of the folded plate roof hanger A.

Then, the expansion fixture B is installed as a bridge between the two fitted parts 94, 94 so that it abuts the uppermost adjacent parts of the fitted parts 94, 94 in the width direction (Y direction) of the mountain-shaped part 9T. The expansion fixture B is optimally installed in a position in the mountain-shaped part 9T of the folded-plate roof C where the fitted parts 94, 94 are fitted with the fitted parts 43, 43 of the hanging member 4 of the folded-plate roof hanger A. The expansion fixture B may also be installed in a position in the fitted parts 94, 94 that is not fitted with the fitted parts 43, 43 of the hanging member 4 of the folded-plate roof hanger A.

In this way, the folded-plate roof hanger A is attached to the hanging structural material 8, the lower fitting ridge-shaped portion 92, the upper fitting ridge-shaped portion 93, and the middle ridge-shaped portion 95 of the folded-plate roof material 9 are fitted to the lower hanging member 4 of the folded-plate roof hanger A, and finally, the extension fixture B is provided to the lower fitting ridge-shaped portion 92, the upper fitting ridge-shaped portion 93, and the middle ridge-shaped portion 95, forming a suspended folded-plate roof with eaves (see Figures 2 and 10(C)).

In the construction of the suspended folded-plate roof of the present invention, the suspended structural material 8 is basically installed first, then the folded-plate roof hanging device A is installed on the suspended structural material 8, the folded-plate roof material 9 is installed on the lower hanging member 4 of the folded-plate roof hanging device A, and the expansion fixing device B is installed on the mountain-shaped portion 9T of the folded-plate roof C composed of the folded-plate roof material 9. This construction sequence from top to bottom allows workers to always work from the bottom side of the suspended structural material 8, making the construction work extremely easy and significantly improving work efficiency. Although the suspended folded-plate roof has been described as a eaves, the suspended folded-plate roof of the present invention can also be applied to the roof of a normal building.

In FIG. 1, the symbol 8T denotes a supporting structural member, which is a beam for installing the hanging structural members 8, 8 arranged side by side in the front-to-rear direction (X direction) on the outside of a building. The supporting structural member 8T is a steel beam, and is preferably an H-shaped steel beam like the hanging structural member 8, and is even larger in size than the H-shaped steel beam of the hanging structural member 8. The supporting structural members 8T are disposed at both ends in the longitudinal direction (Y direction) of the hanging structural members 8, 8 arranged side by side in the front-to-rear direction, and are fixed to each other by welding or the like.

In addition, in FIG. 1, the symbol 8W denotes a suspending device using a wire or cable, etc., which is stretched at an angle between the exterior wall of the building and the supporting structure 8T and the suspended structure 8, and serves to firmly support the suspended structure 8 and the supporting structure 8T to the exterior wall.

Next, the construction method for the suspended folded-plate roof of the present invention will be explained with reference to Figures 10 and 11. First, the suspended structural member 8 is installed [see Figure 10(A)]. Here, the suspended structural member 8 is an H-shaped steel. Next, the folded-plate roof suspension device A is installed on the suspended structural member 8. The folded-plate roof suspension device A has an upper suspension member A1 and a lower suspension member 4.

The upper hanging member A1 has a base portion 1 with rising side plates 12, 12 formed on both sides of the width of the base bottom plate 11, and a U-shaped locking portion 2 with a hanging screw portion 3 that penetrates the base bottom plate 11 on the lower side, and the U-shaped locking portion 2 is configured to fit within both rising side plates 12, 12 and move in the vertical direction [see (I) in Figure 10(A)].

The U-shaped locking portion 2 and base portion 1 of the upper hanging member A1 clamp the lower flange portion 81 of the hanging structural material 8, which is an H-shaped steel (see (II) of Figure 10(A)). The lower hanging member 4 has hanging legs 42, 42 formed downward from both ends of the clamping top 41 in the width direction, and has fitting portions 43, 43 extending inward from the lower ends of the hanging legs 42, 42. The lower hanging member 4 is connected to the upper hanging member A1 via the hanging screw portion 3 and the nut 32, and the flange portion 81 of the hanging structural material 8 is clamped and fixed between the U-shaped locking portion 2 and base portion 1 by tightening the nut 32 (see (III) and (B) of Figure 10(A)).

Next, the folded roof panel material 9 is placed in a position lower than the lower hanging member 4 of the folded roof hanging device A, and the fitted portions 94, 94 of the lower fitting ridge-shaped portion 92 and the upper fitting ridge-shaped portion 93 are fitted into the fitting portions 43, 43 of the lower hanging member 4 (see FIG. 11(A)). Next, the lower fitting ridge-shaped portion 92 of another folded roof panel material 9 is pushed up from below the upper fitting ridge-shaped portion 93 of the existing folded roof panel material 9, so that the upper fitting ridge-shaped portion 93 and the lower fitting ridge-shaped portion 92 overlap and the fitted portions 94 fit together. This is repeated to arrange the folded roof panel materials 9 side by side to form the folded roof C.

Next, the expansion fixture B is placed inside the angled portion 9T of the folded plate roof C (see FIG. 11(B)). Next, the two fitted portions 94, 94 on both sides of the width of the angled portion 9T are pressed from the inside to maintain a predetermined distance between the fitted portions 94, 94 on both sides of the width of the angled portion 9T, and maintain a strong fit between the fitted portions 43, 43 of the lower hanging member 4 of the folded plate roof hanger A and the fitted portions 94, 94 of the angled portion 9T (see FIG. 11(C)).

A: Folded plate roof hanging tool, B: Expansion fixing tool, C: Folded plate roof, A1: Upper hanging member,
DESCRIPTION OF SYMBOLS 1...Base part, 12...Rising side plate, 2...U-shaped locking part, 22...Lower locking plate piece,
3: Suspension screw portion, 4: Lower suspension member, 41: Clamping top portion, 42: Suspension leg portion, 43: Fitting portion,
5...Right extension plate, 51...extension main plate portion, 51a...pressing edge, 52...inclined step portion,
53: Support plate portion, 55: Extended main plate portion, 55a: Pressing edge, 55b: Inclined guide surface,
56: Connection plate portion; 56a: Internal thread portion; 6: Left extension plate; 61: Extension main plate portion;
61a...pressing edge, 62...inclined step portion, 63...support plate portion, 65...connected plate portion,
65a...pressing edge, 65b...inclined guide surface, 65c...long hole, 67c...circular corner,
7... fastening member, 8... hanging structural member, 81... flange portion, 9... folded roof plate material,
9T... Mountain-shaped part, 94... Fitted part.

Claims (9)

A folded-plate roofing material that constitutes a folded-plate roof having mountain-shaped portions at a predetermined interval and a fitting portion at the heightwise intermediate portion of the mountain-shaped portions; an upper hanging member having a base portion with rising side plates formed on both sides in the width direction and a U-shaped U-shaped locking portion having a hanging screw portion that penetrates the base portion on one side of the lower locking plate, the U-shaped locking portion being fitted within both rising side plates and configured to move in the vertical direction; a lower hanging member having hanging legs formed downward from both ends in the width direction of the clamping top, having fitting portions at the lower portions of the hanging legs and connected to the upper hanging member; A suspended folded plate roof comprising: an expansion fixture that is inserted into the mountain-shaped portion and expands in the width direction within the mountain-shaped portion to span between the two fitted portions of the mountain-shaped portion and maintain a predetermined distance between the two fitted portions; and a hanging structural member having a flange portion to which the U-shaped locking portion of the upper hanging member is attached, the upper hanging member and the lower hanging member are fixed to the flange portion of the hanging structural member, the two fitting portions of the lower hanging member are fitted into the two fitted portions of the mountain-shaped portion, and the expansion fixture is installed across the vicinity of the two fitted portions of the mountain-shaped portion. In the suspended folded plate roof described in claim 1, the expansion fixture has a right expansion plate, a left expansion plate, and a tightening member of the same shape, and the right expansion plate and the left expansion plate are formed with an expansion main plate portion, an inclined step portion, and a support plate portion continuously formed from the outer ends in the width direction of each of the right and left expansion plates, and a biting groove portion is formed in the inclined step portion along the front-rear direction to a middle position in the front-rear direction, and a connecting long hole is formed extending along the width direction from the middle position in the front-rear direction with the inclined step portion as a center, and the right expansion plate and the left expansion plate are arranged symmetrically in the width direction, and the biting groove portion of the right expansion plate and the biting groove portion of the left expansion plate are joined so as to bite into each other, and the bolts of the tightening member are inserted between both the connecting long holes, and the two expansion main plate portions are expanded in the width direction by both the expansion main plate portions by tightening with nuts, and both the support plate portions are abutted against the expansion main plate portion on the other side. A suspended folded plate roof. In the suspended folded plate roof described in claim 2, the support plate parts of the right and left extension plates of the extension fixture are positioned lower than the main extension plate parts, and the outer width ends of both main extension plate parts are formed with downward pressing edges. In the suspended folded plate roof described in claim 2, the support plate parts of the right and left extension plates of the extension fixture are positioned above the main extension plate parts, and the outer width ends of both main extension plate parts are formed with pressing edges facing upward. In the suspended folded plate roof described in claim 1, the expansion fixing device has a right expansion plate, a left expansion plate, and a fastening member, and the right expansion plate has a pressing edge bent upward at the widthwise outer end of the expansion main plate part, and an inclined guide surface inclined upward from the inner end is formed, a connecting plate part is formed from the inner end of the inclined guide surface, and an internal thread part is formed in the connecting plate part, and the left expansion plate has an inclined guide surface inclined downward at the inner end of the connected plate part, a pressing edge bent upward at the widthwise outer end of the connected plate part, and a long hole is formed in the connected plate part, and the bolt of the fastening member is inserted into the long hole and screwed into the internal thread part. In the suspended folded plate roof described in claim 1, the expansion fixture has a right expansion plate, a left expansion plate, and a fastening member, the right expansion plate is rectangular with an arc-shaped corner on any diagonal, the left expansion plate has the same outer shape as the right expansion plate, the right expansion plate has a square through hole, the left expansion plate has a circular through hole, the head root of the fastening member bolt has a square cross-sectional corner, and the corner root of the bolt is inserted into the through hole of the right expansion plate. A suspended folded plate roof. A suspended folded-plate roof according to claim 1 or 2, characterized in that the hanging screw portion is fixed to the U-shaped locking portion, and the upper hanging member and the lower hanging member are connected by the hanging screw portion of the upper hanging member and a nut. A suspended folded-plate roof according to claim 1 or 2, characterized in that the upper hanging member and the lower hanging member are connected and fixed by welding. The upper hanging member has a base portion with rising side plates formed on both sides in the width direction, and a U-shaped U-shaped locking portion with a hanging screw portion that penetrates the base portion on one side of the lower locking plate, and the U-shaped locking portion fits within both rising side plates and moves in the vertical direction. The U-shaped locking portion and the base portion of the upper hanging member clamp the flange portion of the hanging structure, and hanging legs are formed downward from both ends of the clamping top in the width direction, and a lower hanging member that has an engagement portion at the bottom of the hanging leg and is connected to the upper hanging member is connected to the upper hanging member via the hanging screw portion and a nut. At the same time, the nut is tightened to clamp and fix the U-shaped locking portion and the base portion, and the fitting portions of the hanging legs of the hanging member are fitted into the fitting portions of the folded roof plate material that has a mountain-shaped portion at a predetermined distance and a fitting portion at the height direction middle part of the mountain-shaped portion, and an expansion fixture is inserted into the mountain-shaped portion, which is expanded in the width direction within the mountain-shaped portion and installed between the fitting portions of the mountain-shaped portion, and the distance between the fitting portions of the mountain-shaped portion is maintained at a predetermined distance by the expansion fixture.

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