JP2006193948A - A horizontal roofing roof boarding and joint for the roof boarding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide horizontal roofing roof boarding having an uneven step in the roof boarding and excellent in workability as well as weathering having high architectural design property and a joint for the roof boarding capable of easily mounting the horizontal roofing roof boarding to have the excellence in the weathering. <P>SOLUTION: The horizontal roofing boarding is constituted of the roof boarding body 1 forming an uneven step section 1c between the upper step roof boarding section 1a and the lower step roof boarding section 1b and forming a projecting section 1d in the lower step roof boarding section 1b side, a lower side interlocking section 2 having a down-stream side fall section 2a formed in four circuits thereof, an upper side fixing section 3 having an upper step projecting section 3a and turning fixing pieces 4, 4, 4 and 4 turning to the back side of the roof boarding body 1 and, at the same time, the joint for the roof boarding is constituted of a permanent plate 5 consisting of a corrugated plate forming turning sections 5f and 5f parallel to the longitudinal direction in both right and left side sections and forming an upper step permanent plate section 5a and a lower step permanent plate section 5b by bending to the front side with a bending section 5c at right angles to the longitudinal direction and a joint body 6 installed in the center in the width direction of the permanent plate 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a roofing roof board that has a step in the roofing board, has a high design and has excellent rain performance and workability, and can be easily attached to the roofing roof board and installed on the roof. Is related to a roof plate joint that is simple and excellent in rain.

  In a roof made of metal such as a copper plate, a roof surface is formed by connecting a large number of rectangular roof plates in the vertical direction and in the horizontal direction in order to make the appearance beautiful. Such roofs are classified into horizontal roofs, flat roofs, and the like depending on how they are laid, and are conventionally used according to the purpose.

  On the side roof, a relatively large roof plate is widely used because it is easy to construct and inexpensive. Some horizontal roofs can form a three-dimensional roof by stepping the upper and lower engaging parts of the roof plate like a stepped roof. Compared to a flat roof where a small roof plate is used, it is slightly inferior in terms of design, so improvement in design is required.

  In order to solve the problem of the design of such a horizontal roof, in the horizontal material using a copper plate and a colored iron plate, the intermediate horizontal seam is formed in a Z shape, and the horizontal distance and height between the upper and lower bent portions are set. There is a horizontal material characterized by being formed approximately equally (see, for example, Patent Document 1). In this horizontal material, a Z-shaped horizontal seam is provided in the center of the horizontal material, and the horizontal material is formed by a plurality of small horizontal materials by sequentially laminating the horizontal material on the horizontal seam. It looks like this and forms a one-tone roof. However, when such specially shaped roof boards are rolled up, it is very difficult to perform rain at the joints in the lateral direction. However, in the case of lightweight roofing boards such as copper plates, wind up is a major problem. However, this part is also locked in the vertical direction by the side springs. So, no measures are taken against the wind from the side.

  In addition, as the step part parallel to the longitudinal direction is formed in the middle part, a step shape is formed on the upper surface of the side cross section with a metal plate having a long lateral width, and a large number of holes are formed integrally with the flat lower surface, On the one end side in the vertical direction, there are provided a goby receiving part formed by bending a rising part having a stopper groove in the center width direction, and a back meshing part formed by bending a cutout shape, and on the other end side, A front meshing portion that is formed by bending a reverse mating shape that matches the rear meshing portion in the middle of the lowermost step length of the lower surface end portion, and a goby hook that is formed by bending the upper surface end portion to the lower surface side There is a long horizontal stacked panel characterized in that the entire space sandwiched between the upper surface and the lower surface is integrally filled with a heat insulating material (see, for example, Patent Document 2). This long horizontal stacked panel is filled with foamed hard urethane material, so the shape is highly maintainable, and a metal plate is also provided on the back side, so it is necessary to use a ground plate for construction. I do not. However, the long horizontal stacked panel has a disadvantage that it is monotonous and low in design because there is no seam in the width direction of the roof because one panel is spread over the entire width of the roof. is there.

  In addition, as a joint member that facilitates the construction of side roofing boards that form seams in the width direction of the roof and takes into account the rain performance, side facing exterior materials consisting of eave side molded parts, ridge side molded parts, and face plate parts A joint member for connecting the side edges of the outer cover material, a substantially planar discard plate member, and a side edge of the exterior material by folding up one side edge of the substrate portion and the substrate portion to form an upper piece portion The joint member is integrated on the discard plate member so that an insertion space is formed between the front surface of the discard member and the back surface of the substrate portion of the joint member. There is a joint member of a horizontal covering material characterized in that it is made into a material (see, for example, Patent Document 3). Since the joint member of this horizontal covering material is integrated on the discard plate member, installation is not troublesome, and it can be easily constructed only by inserting the side edge portion of the horizontal covering material. However, since the joint member of the side covering material is simply a united member of a conventional shape with a discarded plate member and a joint part, a special design with a high design such as having a stepped part in the roof plate. It cannot be used for roof panels with various shapes.

Japanese Utility Model Publication No. 64-29411 Japanese Utility Model Publication No. 6-71660 JP 2001-12020 A

  The present invention solves the above-mentioned problems in the prior art, and has a step roof in the roof plate, has a high design and is excellent in rain performance and workability, and the side roof plate easily. It is an object of the present invention to provide a roof plate joint that can be attached and is easy to install on a roof and excellent in rain.

  As a result of diligent research to solve the above-mentioned problems, the present inventor has found that the roof plate body of the horizontal roof plate has an upper roof plate portion, a lower roof plate portion, and a stepped portion that is lowered from the upper roof plate portion at a substantially right angle therebetween. If it is formed, it will appear that two roof boards are spliced in spite of being a single roof board, and the design will be improved. However, it is very difficult to perform the rain of the part between the left and right edges of the roofing board, but if a convex part protruding to the surface side is provided on the water side of the stepped part, Rainwater that has entered the back side of the stepped part from between the left and right edges flows down to the back side of the convex part along the back side of the stepped part, but a space is formed on the back side of the convex part. Therefore, it does not cause capillarity etc. If it is provided with an upper convex part on the water side of the upper roof plate part in accordance with this convex part, each step is simply bent at a right angle. Since it looks like a special step formed from two different shapes instead of a shape, the design is remarkably improved, and on the left and right edges of the upper and lower roof slabs on the back side of the roof slab body respectively. If the folded back locking pieces are respectively formed, the right and left side edges of the roof plate body are securely positioned by the roof plate joints by locking these folded back locking pieces to the roof plate joints. Because it is regulated, it has been found that it can form a roof with good rain and good appearance.

  In addition, if the roof plate joint used for such a horizontal roofing board is constructed by installing a joint body having substantially the same cross-sectional shape as the horizontal roofing board in the center in the width direction of the discarded board, Most of the rainwater that has entered the back side from the left and right sides of the adjacent roofing roofboard is a joint body that has substantially the same cross-sectional shape as the horizontal roofing board on which the left and right sides of the side roofing board are locked It is possible to drain rainwater from the joint body to the water side, and the corrugated plate is provided with folded portions that are folded back on the left and right sides on the left and right sides, respectively. Even if a large amount of rainwater intrudes and overflows from the joint body by forming, the rainwater will flow vigorously on the discard board to the lower side of the water, so that the rainwater reaches the top of the field board over the left and right side edges of the discard board There is nothing, and the discard plate is longer If the folding plate is bent at the right angle and the back side of the discard board is in contact with the base plate, the stability of the horizontal roofing board will be improved. A part that becomes a joint part, a part that becomes an upper joint part, a part that becomes a step part, a part that becomes a lower joint part, a part that becomes a falling part, and a part that becomes a bent part in order, and a part that becomes an upper joint part If the folded portions of a predetermined width are formed on both sides of the portion that becomes the lower joint portion and the lower joint portion, the folding engagement pieces provided on the left and right side edges of the upper roof plate portion and the lower roof plate portion of the horizontal roof plate are provided. Further, the present invention has also been found out that it can be easily constructed by simply inserting and locking between the upper joint portion and the folded portions on both sides thereof and between the lower joint portion and the folded portions on both sides thereof from the underwater side. Was completed.

That is, according to the present invention, a stepped portion that is lowered from the upper roofboard portion at a substantially right angle between the upper roofboard portion and the lower roofboard portion, and a convex portion that protrudes on the surface side on the lower roofboard portion side. On the four sides of the formed roof plate body,
A lower side composed of a water-side falling part bent at a substantially right angle on the back side and a bent part bent at a substantially right angle from the water-side falling part to the back side of the lower roof plate part. The locking part is
An upper convex portion projecting to the surface side on the water side of the upper roof plate portion, and the lower side locking portion extending from the upper convex portion to the first folded portion on the water side substantially parallel to the upper roof plate portion. A placing portion for the folded portion, a first inclined portion folded obliquely on the surface side from the first folded portion to the second folded portion, and a first folded portion folded obliquely on the surface side at the second folded portion Two inclined portions, a protruding portion protruding to the surface side on the water side of the second inclined portion, a water-side falling portion that is lowered from the protruding portion, and a roof from the end of the water-side falling portion An upper side latching portion composed of a field plate fixing piece bent to the surface side so as to be located on an extension line connecting the lower end of the convex portion of the plate body and the lower end of the upper convex portion,
Folding locking pieces folded back on the back side of the roof plate main body on the left and right side edges of the upper roof plate portion and the lower roof plate portion,
Horizontal roof boards characterized by being formed respectively,
The left and right side portions are each provided with a folded portion that is folded back on the surface side in parallel with the longitudinal direction, and at least the entire width direction of the portion other than the folded portion is continuously provided with waves parallel to the longitudinal direction. It consists of corrugated plates and is bent to the front surface side at a bent portion orthogonal to the longitudinal direction to form an upper step discard plate portion and a lower step discard plate portion. The water-side falling part bent at a substantially right angle is folded back obliquely to the surface side on the water side of the upper-stage discard plate part, and the joint plate latched back to the surface side at the upper center in the width direction A discard plate on which upper side locking portions provided with portions are respectively formed;
A portion that becomes an upper engaging portion, a portion that becomes an upper joint portion, a portion that becomes a step portion, a portion that becomes a lower joint portion, a portion that becomes a falling portion, and a portion that becomes a bent portion are sequentially provided, A portion that becomes the upper engaging portion and a portion that becomes the upper joint portion have a first turning portion with a predetermined width folded on the surface side on both sides thereof, and a portion that becomes the step portion has the first turning portion. The second folded portion folded to the surface side narrower than the width of the first folded portion is formed at the portion that becomes the lower joint portion, and the third folded portion folded to the surface side with substantially the same width as the first folded portion. The upper joint is made of a plate material provided so that the folding line is in a straight line, and the portion that becomes the upper engagement portion on the water side of the portion that becomes the upper joint portion is folded obliquely to the surface side, and the upper joint The part that becomes the stepped part stands at a substantially right angle below the water that becomes the part. The portion that becomes the lower joint at the lower end of the portion that becomes the step portion is bent to the surface side substantially in parallel with the portion that becomes the upper joint portion, and the portion that becomes the lower joint portion The part that becomes the falling part under the water is bent at a substantially right angle on the back side, and the part that becomes the bent part at the lower end of the part that becomes the falling part is bent at a substantially right angle on the back side. The joint body and
The back surface of the lower joint portion of the joint main body is in contact with the surface of the lower waste plate portion of the waste plate with the water-side end located at the bent portion of the waste plate, The lower falling portion is locked to the falling portion and the bent portion of the joint body, and the upper engaging portion of the joint body is locked to the joint plate locking portion of the upper side locking portion of the discard plate. The roof plate joint is characterized in that, in the state, the joint body is installed at the center in the width direction of the discard plate.

  Also, in this horizontal roofing board, the upper roofing board part and the lower roofing board part are formed with substantially the same dimensions, or the stepped part and the falling piece of the lower side locking part are formed at substantially the same height. In addition, it is preferable that the projecting portion protruding on the surface side on the lower roof plate portion side of the step portion and the upper projecting portion are formed at substantially the same height, so that the design can be further improved. . Furthermore, if the edge on the water side of the folded back locking piece is located on the water side as it goes to the center line side of the roof board body, it is formed on the left and right edges of the upper roof board part and the lower roof board part, respectively. The folding latch piece folded back on the back side of the plate body can be easily inserted and locked between the upper joint portion and the first folding portion and between the lower joint portion and the third folding portion. If the left and right sides of the bent part of the lower side latching part are notched from the water side to the predetermined position on the water side, they will enter the discarded board installed on the left and right side parts of the side roofing board. It is preferable that rainwater or the like that has been drained can be smoothly drained from the left and right sides of the cut-out bent portion without being blocked by the bent portion of the lower side locking portion.

  Furthermore, in the above-mentioned roof plate joint, if the lower edge of the first folded portion and the third folded portion is located on the water side as it goes to the center line side of the joint body, Folding engagement pieces respectively formed on the left and right side edges of the roof plate portion and the lower roof plate portion are easily inserted between the upper joint portion and the first folded portion and between the lower joint portion and the third folded portion. If the stepped portion of the joint body has an inclined portion inclined toward the lower joint portion at the lower end thereof, the lower roof plate portion side of the stepped portion of the side roofing plate is preferable. The formed convex part protruding to the front side is supported from the back side by the inclined part, so the shape and position of the convex part are preferably maintained firmly, and the plate material is the folding line side of each folding part of the joint body Is a plate material provided with ridges parallel to the longitudinal direction. For example, it is preferable because the bending rigidity of each folded portion to which the folded locking pieces provided on the left and right side edges of the upper roof plate portion and the lower roof plate portion of the horizontal roof plate are increased and does not easily deform. If the plate material is a plate material provided with a fourth folded portion that is folded back on the surface side by a folding line that is the same straight line as the folding line of each folded portion on both sides of the portion where the plate portion becomes the falling portion of the joint body, It is preferable that rainwater overflows at the lower end of the main body and does not flow to the left and right side edges of the discard plate and reach the top of the field plate, and the bent portion of the discard plate is provided at the approximate center in the longitudinal direction. If it is, it has also been found that it is preferable to improve the design of a roof constructed so as to be able to cope with an aspect in which the upper roof plate portion and the lower roof plate portion are formed with substantially the same dimensions.

  The horizontal roofing board according to the present invention has an upper roofing board part, a lower roofing board part, and a stepped part that is lowered substantially perpendicularly from the upper roofing board part between the upper roofing board part and the lower roofing board part. Although it is a roofboard, it looks like two roofboards are connected, and it has a high design, and if a step is provided in the roofboard, it is very difficult to finish the rain on that part. Since the convex part protruding to the surface side is formed on the lower roof plate part side of the step part, rainwater that has entered the back side of the step part from the left and right side edges of the roof board adjacent in the lateral direction is If it flows down to the back side of this convex part along the back side, a space is formed on the back side of this convex part, so that it does not cause capillary action etc. Because it is immediately guided to the throwing board, it can rain enough, and the upper stage is aligned with this convex part. Since the upper convex portion is provided on the water side of the root plate portion, it is not a simple shape in which each step is simply bent at a right angle, unlike a roof plate having a plurality of steps. Since it is formed from a portion having a shape, the design is remarkably improved.

  Also, at the upper and lower ends of the roof plate body, the lower side of the lower roof plate part is bent at a substantially right angle on the back side, and the water fall side is bent at a substantially right angle from the lower side fall part to the back side. The lower side latching part consisting of the bent part is folded on the upper side of the upper roof plate part, and the upper convex part projecting to the surface side. A mounting portion for the bent portion of the lower side locking portion reaching the first folded portion on the side, a first inclined portion folded obliquely on the surface side from the first folded portion to the second folded portion, A second inclined portion that is folded back to the surface side by two folded portions, a protruding portion that protrudes to the surface side on the water side of the second inclined portion, and a water-side falling portion that is lowered from the protruding portion And an extension line connecting the lower end of the convex portion of the roof plate body and the lower end of the upper convex portion from the end of the water-side falling portion Since the upper side latching part comprised from the field board fixed piece bent to the surface side so that it may be located is provided, if the horizontal roof board concerning the present invention is successively connected up and down, the lower side Since the bent portion of the locking portion is inserted and locked in the space formed between the placement portion of the upper side locking portion and the first inclined portion, rainwater only enters this space and goes deeper. In the case of intrusion, rainwater is on the back side of the roof plate body because there is a protruding portion protruding on the surface side on the water side of the second inclined portion of the upper side locking portion. It will never reach.

  Furthermore, since the folding latch pieces folded back on the back side of the roof plate body are provided on the left and right side edges of the upper roof plate portion and the lower roof plate portion, respectively, these folded latch pieces are provided on the roof plate joints. By locking, the right and left side edges of the roof plate body are reliably regulated by the roof plate joints, so that it is possible to form a roof with good rain performance and good appearance.

  Further, the roof plate joint according to the present invention used for such a horizontal roof plate is composed of a discard plate and a joint body, and the discard plate is folded back to the surface side in parallel with the longitudinal direction on the left and right sides, respectively. Is formed from a corrugated plate in which waves parallel to the longitudinal direction are continuously provided on the entire width direction of at least the portion other than the folded portion. Since it flows down along the bottom of the water, not only is it highly drainable, but it does not reach the top of the field board over the folded part, and it is bent at a right angle on the back side of the lower dumping board part under water. The water-side falling part is folded back obliquely to the surface side on the water side of the upper-stage discard plate part, and a joint plate locking part folded back to the surface side is provided at the upper part in the center in the width direction. Are the upper side locking parts formed? When the roof plate joint according to the present invention is arranged on the eaves side, the lower side locking portion of the horizontal roofing plate is locked to the water-side falling portion and the upper-stage discard plate portion and the upper side locking portion are locked. When the base plate fixing piece of the horizontal roofing board is inserted between the base plate and the base plate fixing piece is nail-fixed on the base plate at a position where there is no discard board, it is arranged on the water side from the eave side. In this case, the underwater falling part is arranged along the second folded part of the underside roofing board, and the underside locking part of the underside roofing board is engaged with the underwater falling part. At the same time, insert a field roof plate fixing piece of a horizontal roofing board between the upper dumping plate portion and the upper edge locking portion and nail and fix the field plate fixing piece on the field plate at a position where there is no dumping plate. Since the operation is repeated, the discard board can be easily laid without nailing or the like.

Also, the joint body is provided with an upper engaging part, an upper joint part, a step part, a lower joint part, a falling part, and a bent part. The first folded portion with a predetermined width folded to the surface side is formed on both sides of the upper engaging portion and the upper joint portion, and the first folded portion is formed on the step portion. The second folded part folded back to the surface side narrower than the width of the part, and the third folded part folded back to the surface side with substantially the same width as the first folded part at the part that becomes the lower joint part, Since the folding line is formed from a plate material provided in a straight line, the folding latch provided on the back side of the left and right side edges of the upper roof plate part and the lower roof plate part of the horizontal roof board respectively Place the piece between the upper joint and the first folded part and the lower part A horizontal roofing board can be easily constructed just by inserting and locking between the joint part and the third folded part from the underwater side, and this joint body is the upper side of the part that becomes the upper joint part. The part that becomes the upper engaging part is folded back diagonally to the surface side, and the part that becomes the step part on the underwater side of the part that becomes the upper joint part is lowered at a substantially right angle, and the part that becomes the step part The part that becomes the lower joint at the lower end of the bottom is bent to the surface side substantially parallel to the part that becomes the upper joint part, and the part that becomes the falling part on the water side of the part that becomes the lower joint part is on the back side It is bent at a substantially right angle, and the part that becomes the bent part at the lower end of the part that becomes the falling part is bent at a substantially right angle on the back side. The left and right sides of the horizontal roofing board that have a surface shape and are adjacent in the horizontal direction Because many rainwater that has infiltrated the rear surface side from between the edge flows into the joint body can be reliably drained rainwater from the coupling body,
In addition, the back surface of the lower joint part of the joint body is in contact with the surface of the lower discard plate part of the discard plate with the upper end of the joint located at the bent part of the discard plate. With the lower part engaged with the falling part and the bent part of the joint body, and the upper engaging part of the joint body engaged with the joint plate engaging part of the upper side locking part of the discard plate, Since it is installed in the center of the discard plate in the width direction, even if a large amount of rainwater enters and overflows from the joint body, it overflows in the center of the discard plate in the width direction. Since the board and the joint body are integrated, it is possible to save time and labor compared to the case where the discard board and the joint body are separately installed on the roof.

  And in the horizontal roofing board concerning the above-mentioned present invention, when the upper stage roofing board part and the lower stage roofing board part are formed in substantially the same size, the comparatively small roofing board of about the same dimension is rolled up one by one. If the step part and the falling piece of the lower side locking part are formed at substantially the same height, the step part of the roof plate body and the falling part of the lower side locking part respectively Since the steps are formed, the steps appear to have substantially the same height, and the convex portion and the upper convex portion protruding to the surface side on the lower roof plate portion side of the step portion are formed to have substantially the same height. In this case, since the convex portions appear to be substantially the same height, it is possible to construct a roof in which a three-dimensional pattern having substantially the same dimensions is repeated. Thus, in order to improve the designability, it is preferable that the bent portion of the discard plate is provided at the approximate center in the longitudinal direction. Furthermore, when the edge of the upper side of the folded back locking piece is located on the lower side as it goes to the center line side of the roof plate body, the left and right sides of the upper and lower roof plate parts of the roof plate body Folding engagement pieces formed at the edges and folded back on the back side are easily inserted between the upper joint portion and the first folding portion of the roof plate joint and between the lower joint portion and the third folding portion. If the left and right sides of the bent portion of the lower side latching part are cut out from the water side to a predetermined position on the water side, respectively, It is preferable that rainwater or the like that has entered the dumping plate installed in the can be drained smoothly from the left and right side portions of the bent portion without being blocked by the bent portion of the lower side locking portion. .

  Further, in the above-described roof plate joint according to the present invention, when the lower edge of the first folded portion and the third folded portion is located on the water side as going to the center line side of the joint body, Folding engagement pieces respectively formed on the back side of the right and left side edges of the upper roof plate portion and the lower roof plate portion of the horizontal roofing plate are provided between the upper joint portion and the first folded portion, and the lower joint portion and the third folded portion. If the stepped portion of the joint body has an inclined portion inclined toward the lower joint portion at the lower end thereof, the step of the horizontal roofing board is preferred. The convex part formed on the lower roof plate part side and projecting to the front side is supported from the back side by the inclined part, so the shape and position of the convex part are preferably maintained firmly, and the plate material is the joint body Convex ridges parallel to the longitudinal direction on the folding line side of each folding part Is the plate material provided with the bending rigidity of each folded portion where the folded locking pieces respectively provided on the left and right side edges of the upper roof plate portion and the lower roof plate portion of the horizontal roof plate are locked. It is preferable because it becomes large and difficult to deform, and further, a fourth folded portion that is folded back to the surface side by a folding line that is collinear with the folding line of each folding portion on both sides of the portion where the plate material becomes the falling portion of the joint body. In the case of the provided plate material, it is preferable that rainwater does not overflow at the lower end of the joint body and flow to the left and right side ends of the discard plate and reach the field plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a horizontal roof panel and a roof panel joint according to the present invention will be described in detail with reference to the drawings.
1 is a front explanatory view showing one embodiment of a horizontal roofing board according to the present invention, FIG. 2 is a rear explanatory view of the horizontal roofing board of FIG. 1, and FIG. 3 is a side explanatory view of the horizontal roofing board of FIG. 4 is a front explanatory view showing an embodiment of a roof plate joint according to the present invention, FIG. 5 is a side explanatory view of the roof plate joint of FIG. 4, and FIG. 6 is a bottom view of the roof plate joint of FIG. FIGS. 7 and 7 are perspective explanatory views showing a state in which the horizontal roofing board in FIG. 1 is attached to the roofing plate joint of FIG. 4, and FIG. 8 is a schematic explanatory view showing an arrangement state of the horizontal roofing board at the time of construction. .

  In the drawings, 1 projects between the upper roof plate portion 1a and the lower roof plate portion 1b to the surface side toward the stepped portion 1c that is lowered substantially perpendicularly from the upper roof plate portion 1a and to the lower roof plate portion 1b side. This is a roof plate body in which a convex portion 1d is formed. A lower side locking part 2, an upper side locking part 3, and folded back locking pieces 4, 4, 4, which will be described later, are formed on the four circumferences of the roof plate main body 1. The roof plate body 1 in which the locking portions 2, 3, 4, 4, 4, and 4 are formed on the four circumferences is formed from a single metal plate, and a copper plate can be preferably used as the metal plate. It may be a coated steel plate or the like. In addition, if the upper roof plate portion 1a and the lower roof plate portion 1b are approximately the same size, it is preferable that relatively small roof plates of approximately the same size appear to be rolled sequentially and the design is improved.

  2 is a waterfall side 2a which is bent at a substantially right angle on the back side of the lower roof plate part 1b of the roof plate body 1 and is bent at a substantially right angle from the water fall side 2a to the back side. The side roofing plate according to the present invention is a lower side locking portion composed of the bent portion 2b, and the lower side locking portion 2 is locked so as to cover an upper side locking portion 3 described later. It is passed up and down sequentially. Moreover, the falling part 2a of the covered lower side locking part 2 appears outside as a step. Therefore, if the stepped portion 1c of the roofboard body 1 and the falling portion 2a of the lower side locking portion 2 are substantially the same height, the stepped portion 1c of the roofboard main body 1 and the lower side locking portion 2 can be seen from the outside. Since the falling part 2a has substantially the same height, the design is improved, which is preferable. Further, if the left and right side portions of the bent portion 2b of the lower side latching portion 2 are cut out from the water side to a predetermined position on the water side, the later-described discard plates installed on the left and right side portions of the horizontal roofing board. It is preferable that rainwater or the like that has entered the wall 5 can be smoothly drained from the left and right side portions of the cut-out bent portion 2b without being blocked by the bent portion 2b of the lower side locking portion 2.

  3 is an upper convex portion 3a that protrudes to the surface side on the upper side of the upper roof plate portion 1a of the roof plate main body 1, and a first turn on the upper side of the water from the upper convex portion 3a to the upper roof plate portion 1a. A mounting portion 3b for the bent portion 2b of the lower side locking portion 2 that reaches the portion A, a first inclined portion 3c that is bent obliquely on the surface side from the first folded portion A to the second folded portion B, A second inclined portion 3d folded obliquely to the surface side at the second folded portion B, a protruding portion 3e protruding to the surface side on the water side of the second inclined portion 3d, and lowered from the protruding portion 3e The water-side falling part 3f and the surface side so as to be located on the extension line connecting the lower end of the convex part 1d of the roof plate body 1 and the lower end of the upper convex part 3a from the end of the water-side falling part 3f It is an upper side latching | locking part comprised from the baseplate fixed piece 3g bent by 1 side. When the lower side locking part 2 is locked to the upper side locking part 3 and the horizontal roofing boards according to the present invention are successively joined up and down, the bent part 2b of the lower side locking part 2 is the upper side locking part. 3 is inserted into the space formed between the placing portion 3b and the first folded portion A and locked. In addition, if the convex portion 1d and the upper convex portion 3a protruding to the surface side on the lower roof plate portion 1b side of the step portion 1c of the roof plate main body 1 are substantially the same height, each convex portion is substantially the same height. Therefore, it is possible to construct a roof in which a three-dimensional pattern having substantially the same dimensions is repeated, so that the design is improved, which is preferable.

  Reference numeral 4 denotes folded back locking pieces folded back on the back side of the roof plate body 1 at the left and right side edges of the upper roof plate portion 1a and the lower roof plate portion 1b, respectively. By engaging with the first turn-up portion 6ba and the third turn-up portion 6da of a predetermined width, which are turned back to the surface side on both sides of the upper joint portion 6b and the lower joint portion 6d of the joint body 6 for the joint, respectively. The upper roof plate portion 1a and the lower roof plate portion 1b are firmly held. Moreover, if the edge of the upper side of the folded back locking pieces 4, 4, 4, 4 is located on the lower side as it goes to the center line side of the roof plate body 1, the upper roof plate portion 1 a and the lower roof plate portion The folding engagement pieces 4, 4, 4, and 4 formed on the left and right edges of 1b and folded back on the back side of the roof plate body 1 are respectively connected to the upper joint portion 6b and the first folded portion 6ba of the roof plate joint described later. And between the lower joint portion 6d and the third folded portion 6da can be easily inserted and locked.

  5 is formed with folded portions 5f and 5f which are folded back on the surface side in parallel with the longitudinal direction on the left and right sides, and waves parallel to the longitudinal direction are at least on the entire width direction of the portions other than the folded portions 5f and 5f. It consists of corrugated plates provided continuously, and is bent to the surface side by a bent portion 5c orthogonal to the longitudinal direction to form an upper-stage discard plate portion 5a and a lower-stage discard plate portion 5b. A water-side falling portion 5d that is bent at a substantially right angle on the back side is formed on the water side of 5b, and a water-side falling portion 5d that is bent at an angle on the surface side on the water side of the upper-stage discard plate portion 5a. The upper side locking portion 5e is provided with a joint plate locking portion 5ea that is folded back to the surface side. Since the discard plate 5 is formed of a corrugated plate, even if rainwater enters, rainwater flows down along the bottom of the wave, so drainage is high, and the folded portions folded back on the surface side on the left and right sides respectively. Because it is provided, even if a large amount of rainwater enters and overflows from the joint body, the rainwater does not reach the field plate beyond the left and right side edges of the discard plate, and it is further bent perpendicular to the longitudinal direction. Since it is bent at the portion, the rear side of the discard board can be installed in contact with the base plate, so that the stability of the horizontal roofing plate is improved.

  Reference numeral 6 denotes an upper engaging portion 6a, an upper joint portion 6b, a step portion 6c, a lower joint portion 6d, a falling portion 6e, and a bent portion 6f. Are sequentially provided, and the first folded portions 6aa and 6ba having a predetermined width folded to the surface side are provided on both sides of the portion to be the upper engaging portion 6a and the portion to be the upper joint portion 6b, respectively. The second folded portion 6ca folded back to the surface side narrower than the width of the first folded portions 6aa and 6ba is formed at the portion 6c, and the width approximately the same as the first folded portions 6aa and 6ba at the portion to be the lower joint portion 6d. The third folded portion 6da folded back to the front side is made of a plate material provided so that the folded lines of the folded portions 6aa, 6ba, 6ca, 6da are in a straight line, and is a portion of the upper joint portion 6b. The part that becomes the upper engaging part 6a on the water side is folded back to the front side and becomes the upper joint part 6b The part that becomes the step part 6c on the water side is lowered substantially at a right angle, and the part that becomes the lower joint part 6d at the lower end of the part that becomes the step part 6c is substantially parallel to the upper joint part 6b on the surface side at a substantially right angle Is bent at the lower end of the portion that becomes the falling portion 6e, the portion that becomes the falling portion 6e is bent at a substantially right angle on the back side. This is a joint body in which the portion to become the portion 6f is bent at a substantially right angle on the back surface side. The joint body 6 is in contact with the surface of the lower discard plate portion 5b of the discard plate 5 with the back surface of the lower joint portion 6d positioned on the bent portion 5c of the discard plate 5 with the water-side end thereof positioned at the bent portion 5c. The water-side falling portion 5d of the discard plate 5 is connected to the falling portion 6e and the bent portion 6f of the joint body 6, and the upper engaging portion 6a of the joint body 6 is the joint of the upper side locking portion 5e of the discard plate 5. It is installed in the center in the width direction of the discard plate 5 while being locked to the plate locking portion 5ea, and is integrated with the discard plate 5 so that the discard plate 5 and the joint body 6 are separately to the roof. This saves time and effort compared to the installation.

  Moreover, in such a joint main body 6, when the lower edge of the first folded portion 6ba and the third folded portion 6da is located on the water upper side as it goes to the center line side of the joint main body 6, Folding locking pieces 4, 4, 4, and 4 formed on the back sides of the left and right side edges of the upper roofing board portion 1a and the lower roofing board portion 1b of the horizontal roofing board are respectively connected to the upper joint portion 6b and the first folding portion 6ba. And the lower joint portion 6d and the third folded portion 6da can be easily inserted and locked, and the step portion 6c of the joint body 6 is inclined at the lower end of the lower joint portion 6d. In the case of having 6cb, the convex portion 1d protruding to the front surface side formed on the lower roof plate portion 1b side of the step portion 1c of the horizontal roof plate is supported from the back surface side by the inclined portion 6cb. Therefore, it is preferable that the shape and position of the convex portion 1d are firmly maintained, and the plate material is each folded portion 6aa of the joint body 6. 6b, 6ca, 6da If the plate is provided with ridges 6g, 6g parallel to the longitudinal direction on the folding line side, the left and right sides of the upper roof plate portion 1a and the lower roof plate portion 1b of the horizontal roof plate The folded portions 6aa, 6ba, 6ca, 6da, which are engaged with the folded locking pieces 4, 4, 4, 4 provided on the side edges, respectively, are preferable because the bending rigidity is increased and the deformation is difficult to occur. On both sides of the portion of the joint body 6 that becomes the falling portion 6e, there are provided fourth turn-up portions 6ea that are turned back to the surface side by fold lines that are collinear with the fold lines of the turn-back portions 6aa, 6ba, 6ca, 6da. In the case of the plate material, it is preferable that rainwater overflows at the lower end of the joint body 6 and does not flow to the left and right side end portions of the discard plate 5 and reach the field plate.

  Generally, in the construction of side roofing boards and joints for roofing boards, the sideboard roofing boards are locked to the joints for roofing boards and joined in the horizontal direction, so the joints for roofing boards are firmly fixed on the base plate. There is a need. However, when the roof plate joint is fixed on the base plate with a nail or the like, rainwater or the like infiltrates from the nailed portion onto the base plate and causes rain leakage or the like. In particular, in the case of a horizontal roofing board in which a step portion is provided between the upper roofing board part 1a and the lower roofing board part 1b, such as the horizontal roofing board according to the present invention, the inside of the joint for roofing boards from this stepping part. Since rainwater etc. is easy to enter, rain leakage etc. is likely to occur when the roof plate joint is fixed on the base plate with a nail or the like. However, in the case of the horizontal roof plate and the roof plate joint according to the present invention, the roof is covered with a nail or the like. Work without fixing the plate joint directly on the base plate.

  If the roofing plate joint is not fixed to the base plate, the roofing plate is fixed to the roofing plate joint by holding the roofing plate joint that is locked to the left and right edges of the horizontal roofing plate. Although it is necessary to lock the left and right side edges of the roofboard, manual installation is required for the horizontal roofing board and the roofing board joint according to the present invention even though the roofing board joint is not directly fixed to the field board. it can. The construction method will be described in detail below.

  The side roofing boards and roofing board joints according to the present invention are sequentially rolled from the eave side row to the building side. The roof panel joint is locked and integrated before rolling. For example, in the case where the side roofing boards are spread from the left side to the eaves side on the field board in order, the folded back locking pieces 4 and 4 formed on the right side edge of each side roofing board are Water between the upper joint portion 6b of the joint and the first folded portion 6ba folded to the front side on the left side and between the lower joint portion 6d and the third folded portion 6da folded to the front side on the left side Insert and lock from the lower side to be integrated, and then turn the left side edge folded locking pieces 4 and 4 that are not locked to the roofing joints of the side roofing boards that are to be put on the right side, An upper joint portion 6b for a roof plate joint mounted on a horizontal roof plate in which a base plate fixing piece 3g of the upper side locking portion 3 is already nailed and fixed at a position where the discard plate 5 does not exist on the main plate. And the first folded part 6ba folded to the front side on the right side and the lower joint part 6d and the right side It is inserted and locked between the third folded portion 6da folded back to the surface side. At this time, the lower side locking portion 2 of the horizontal roofing plate is locked to the water-side falling portion 5d of the roofing plate joint, and the field plate fixing piece 3g of the upper side locking portion 3 is discarded on the upper side of the discarding plate 5. It is inserted into a space formed between the plate portion 5a and the upper side locking portion 5e that is folded back to the surface side on the water side of the upper-stage discard plate portion 5a. The newly installed horizontal roofing board is fixed to the field board by nailing the field board fixing piece 3g of the upper side locking portion 3 at a position where the discard board 5 does not exist.

  In this way, if the side roofing board and the roofing plate joint are integrated and installed, it is not necessary to manually press the roofing board joint that is not fixed directly to the field board, and it can be easily installed by a small number of people. be able to. Also, the roofboard joint is not fixed directly to the baseboard, but the left and right side roofboards that have been locked are fixed to the baseboard using nails etc. In addition, the underwater side falling part 5d of the roof plate joint is locked to the lower side locking part 2 of the horizontal roofing board, and the upper stage discarding board part 5a is locked to the upper side of the horizontal roofing board. Since the position is fixed in the ridge side and eaves side direction because it is locked to the portion 3, the roof panel joint according to the present invention can be completely fixed without using nails or the like.

  Also, when the side roofing board and the roofing board joint are arranged on the most water side from the eaves side, the roofing board joint is previously placed on one of the determined side edges of the side roofing board as described above. It is necessary not only to connect the horizontal roofing board and the roofing plate joint to the left and right, but also to lock it to the horizontal roofing board on the underwater side. For that purpose, first, the underwater falling part 2a of the roofing roofboard and the underwater falling part 5d of the roofboard joint are arranged along the second folded part B of the underwatering roofing board. In this state, the lower side locking portion 2 of the horizontal roofing board is covered with the upper side locking part 3 of the horizontal roofing board located on the eaves side. Next, the base plate fixing piece 3g of the horizontal roof plate is fixed by nailing to the base plate at a position where the discard plate 5 does not exist. By repeating such an operation, the horizontal roofboard and the roofboard joint are sequentially connected from the eave side to the ridge side as shown in FIG. At this time, as shown in FIG. 8, if the right and left side edges of each side roofing board are positioned so as to be located at the approximate center in the longitudinal direction of the underside roofing roof board, only the design is improved. Rainwater that flows in between the left and right side edges of the side roofing boards that are adjacent to each other in the horizontal direction falls under the roofboard joints installed on the side plate between the left and right sides of the adjacent horizontal roofing boards. Since it is discharged on the side roofing board on the side, rainwater etc. discharged through the joint for roofing board does not flow again between the left and right side edges of the side roofing board adjacent in the horizontal direction on the underwater side. It is.

  The side roofing board thus constructed is of a side roofing board in which the bent part 2b of the lower side locking part 2 of the sided roofing board fixed to the waterside when being joined in the vertical direction is fixed to the waterside. Since it is inserted and locked in the space formed between the placing portion 3b of the upper side locking portion 3 and the first inclined portion 3c, most of the rainwater penetrates further into the space just by entering this space. There is almost nothing, and even when it has entered, a projection 3e projecting to the surface side is provided on the water upper side of the second inclined portion 3d of the upper side latching portion 3, so that rainwater is on the back surface of the roof plate body 1. Since it never reaches the side, the up and down rain is complete.

  In addition, when the step portion 1c is provided in the roof plate like the side roof plate according to the present invention, it is very difficult to finish the rain of the portion, but on the lower roof plate portion 1b side of the step portion 1c of the side roof plate. Since the convex part 1d protruding to the front side is formed, rainwater that has entered the back side of the step part 1c from between the left and right edges of the horizontal roofing boards adjacent in the lateral direction is on the back side of the step part 1c. Along the back side of this convex part 1d, but because there is a space on the back side of this convex part 1d, the left and right sides of the horizontal roofing boards that are adjacent in the horizontal direction without causing capillary action etc. Since it is immediately guided to the joint main body 6 and the discard plate 5 installed between the side portions, a sufficient rain can be performed. Further, the rainwater that has entered from the side edges other than the step portion 1c of the lateral roofing board adjacent in the lateral direction is separated from the upper joint portion 6b on both sides of the upper joint portion 6b and the lower joint portion 6d of the joint body 6, respectively. The upper joint portion 6b and the lower joint portion 6d between the folding engagement pieces 4 and 4 of the roof plate main body 1 and between the lower joint portion 6d of the roof board main body 1 and the folding engagement pieces 4 and 4 of the roof plate body 1 due to a capillary phenomenon or the like. Although it flows toward the left and right side edges, the side of the upper joint portion 6b between the upper joint portion 6b and the first turn-up portions 6ba, 6ba and the lower step between the lower joint portion 6d and the third turn-up portions 6da, 6da On the side edge side of the joint portion 6d, there is a space portion in which the folded back locking pieces 4, 4, 4 and 4 of the roof plate body 1 are not inserted, so rainwater flows down the space portion as it is and below the joint body 6 Between the surface of the falling part 6e formed on the bottom and the back side of the bottom side locking part 2 of the side roofing board Underwater than is flowing on a fixed horizontal roofing plate side. Further, the first folding parts 6ba, 6ba of the joint body 6 and the folding locking pieces 4, 4 of the roof board body 1 and the third folding parts 6da, 6da of the joint body 6 and the roof board body 1 are folded back. Rainwater that has flowed in between the stop pieces 4 and 4 due to capillarity or the like is on the side edge side of the roof plate body 1 between the roof plate body 1 and the folded back locking pieces 4, 4, 4, 4. Since there is a space portion in which the first turn-up portions 6ba and 6ba of 6b and the third turn-up portions 6da and 6da of the lower joint portion 6d are not inserted, rainwater flows down the space portion as it is and is formed below the joint body 6 From the surface of the falling part 6e thus formed and the back surface of the lower side locking part 2 of the horizontal roofing board, the liquid flows out on the horizontal roofing board fixed to the water side. Further, the rainwater flowing between the first folded portions 6ba and 6ba and the third folded portions 6da and 6da of the joint body 6 and the roof plate body 1 is on the side of the folded portions 6aa, 6ba, 6ca and 6da of the joint body 6. If the ridges 6g, 6g parallel to the longitudinal direction are provided on the edge side, the ridges 6g, 6g are prevented from flowing to the surface of the discard plate 5 and flowed to the surface of the discard plate 5. In this case, along the bottom of the wave of the discard plate 5, from the surface of the lower-side falling portion 5 d of the lower-stage discard plate portion 5 b and the back surface of the lower side locking portion 2 of the horizontal roof plate to the lower side of the water. It flows out on a fixed side roofing board. Even when a large amount of rainwater overflows into the discarding plate 5 due to heavy rain or the like, the discarding plate 5 is formed of a corrugated plate, so that the wave parallel to the longitudinal direction provided in the width direction of the discarding plate 5 is generated. The rainwater is difficult to flow to the left and right of the discard plate 5 because it flows down along the left and right sides of the discard plate 5 and the folded portions 5f and 5f extending over the entire length in the longitudinal direction are formed. The rainwater does not flow up to the left and right side edges of the plate 5 and reach the top of the field plate, and the rainwater is surely disposed on the surface of the lower falling portion 5d of the lower-stage discard plate portion 5b of the discard plate 5 and the side roof plate. It flows out on the horizontal roofing board fixed to the underwater side from between the back surface of the lower side latching | locking part 2. FIG.

  As described above, the roof joint according to the present invention has a number of contrivances with respect to rainwater that has entered from between the left and right side edges of the horizontal roof slabs that are adjacent in the lateral direction. There is no such thing as reaching the top of the field plate.

  In addition, when installing a horizontal roofing board using a normal roofing board joint, rainwater can easily enter from the joined part, so a cover material is attached to the joined part from the surface side of the roofing board. In many cases, however, the roofing joint according to the present invention can reliably drain rainwater that has entered from the left and right edges of the horizontal roofing boards that are adjacent in the lateral direction, so a cover material is not required. As a result, the design of the horizontal roofing board is not impaired.

It is front explanatory drawing which shows one Example of the horizontal roofing board which concerns on this invention. It is back surface explanatory drawing of the horizontal roofing board in FIG. It is side surface explanatory drawing of the horizontal roofing board in FIG. It is front explanatory drawing which shows one Example of the joint for roof boards which concerns on this invention. It is side surface explanatory drawing of the joint for roof boards in FIG. FIG. 5 is an explanatory bottom view of the roof plate joint in FIG. 4. It is a perspective explanatory view which shows a mode that the horizontal roofing board of FIG. 1 was attached to the joint for roofing boards in FIG. It is a schematic explanatory drawing which shows the arrangement | positioning state of the horizontal roofing board at the time of construction.

Explanation of symbols

1 Roof plate body
1a Upper roof panel
1b Lower roof plate
1c Step
1d Convex part 2 Lower side locking part
2a Water-side falling part
2b Bending part 3 Upper side locking part
3a Upper convex part
3b Mounting part
3c 1st inclined part
3d 2nd inclined part
3e protrusion
3f Water-side falling part
3g Field plate fixed piece A 1st folded part B 2nd folded part 4 Folded locking piece 5 Discarded board
5a Upper plate
5b Lower plate
5c Folding part
5d Water-side falling part
5e Upper side locking part
5ea joint plate locking part
5f Turn-up part 6 Fitting body
6a Upper engaging part
6aa 1st turning part
6b Upper joint
6ba 1st turning section
6c Stepped part
6ca 2nd turning part
6cb slope
6d Lower joint
6da 3rd turning section
6e Falling part
6ea 4th turning part
6f Bending part
6g ridge

Claims (12)

A stepped portion (1c) and a lower roofboard portion (1b) side of the upper roofboard portion (1a) and the lower roofboard portion (1b), which are lowered substantially perpendicularly from the upper roofboard portion (1a). On the four sides of the roof plate body (1), on which the convex part (1d) protruding to the surface side is formed,
The lower roof plate part (1b) is bent at a substantially right angle from the water-side falling part (2a) and the water-side falling part (2a) which is bent at a substantially right angle to the back side at the water side. The lower side locking part (2) consisting of the bent part (2b)
The upper ridge (3a) protruding to the surface side on the water side of the upper roof slab (1a), and the upper ridge (3a) from the upper ridge (3a) substantially parallel to the upper roof slab (1a) A placing portion (3b) for the bent portion (2b) of the lower side locking portion (2) reaching the first turned portion (A), and a second turned portion (B) from the first turned portion (A). A first inclined portion (3c) that is folded back to the front surface side, a second inclined portion (3d) that is folded back to the front surface side at the second folded portion (B), and the second inclined portion ( 3d), a protrusion (3e) protruding on the surface side, a water-side falling part (3f) lowered from the protrusion (3e), and a water-side falling part (3f) A field plate fixed to the surface side so as to be positioned approximately on an extension line connecting the lower end of the convex portion (1d) of the roof plate body (1) and the lower end of the upper convex portion (3a) from the end. The upper side locking part (3) composed of a piece (3g)
Folding locking pieces (4, 4, 4, 4) folded back on the back side of the roof plate body (1) are provided on the left and right edges of the upper roof plate (1a) and the lower roof plate (1b), respectively. ,
A horizontal roofing board characterized by being formed respectively.   The horizontal roofing board according to claim 1, wherein the upper roofing board part (1a) and the lower roofing board part (1b) have substantially the same dimensions.   The horizontal roofing board according to claim 1 or 2, wherein the stepped portion (1c) and the falling portion (2a) of the lower side locking portion (2) have substantially the same height.   The convex part (1d) and the upper convex part (3a) protruding to the surface side on the lower roof plate part (1b) side of the step part (1c) are substantially the same height. A horizontal roofing board according to claim 1.   The water-side edge of the folded back locking piece (4, 4, 4, 4) is located on the water side as it goes to the center line side of the roof plate body (1). A horizontal roofing board according to item 1.   The horizontal side according to any one of claims 1 to 5, wherein left and right side portions of the bent portion (2b) of the lower side locking portion (2) are cut away from a predetermined position on the water side to the water side. Thatched roof board. Folded portions (5f, 5f) are provided on the left and right side in parallel with the longitudinal direction, respectively, and at least the portions other than the folded portions (5f, 5f) in the width direction are parallel to the longitudinal direction. Consists of corrugated plates in which waves are continuously provided, and is bent to the surface side by a bent portion (5c) orthogonal to the longitudinal direction to form an upper discard plate portion (5a) and a lower discard plate portion (5b) The lower-side discarded plate portion (5b) has a lower-side falling portion (5d) that is bent at a substantially right angle on the back side, and is located on the upper side of the upper-stage discarded plate portion (5a). The upper side locking portion (5e) is formed with a joint plate locking portion (5ea) which is folded back to the front surface side and is folded back to the front surface side at the top in the width direction. Plate (5),
A portion to be the upper engaging portion (6a), a portion to be the upper joint portion (6b), a portion to be the step portion (6c), a portion to be the lower joint portion (6d), and a portion to be the falling portion (6e) Folded portions (6f) are sequentially provided, and the upper engaging portion (6a) and the upper joint portion (6b) are folded on the surface side on both sides thereof. The first folded portion (6aa, 6ba) of the predetermined width is folded back to the surface side narrower than the width of the first folded portion (6aa, 6ba) at the portion that becomes the stepped portion (6c). A portion where the portion (6ca) becomes the lower joint portion (6d) has a third folded portion (6da) which is folded back to the surface side with substantially the same width as the first folded portion (6aa, 6ba). (6aa, 6ba, 6ca, 6da) is made of a plate material provided so that the folding line is in a straight line, and the upper engagement portion (6a) is on the water side of the portion that becomes the upper joint portion (6b) Will be folded diagonally to the surface side The portion that becomes the stepped portion (6c) is lowered at a substantially right angle below the portion that becomes the upper joint portion (6b), and the lower end of the portion that becomes the stepped portion (6c) The portion that becomes the lower joint portion (6d) is bent to the surface side substantially in parallel with the portion that becomes the upper joint portion (6b), and the standing portion on the water side of the portion that becomes the lower joint portion (6d). The part that becomes the falling part (6e) is bent at a substantially right angle on the back surface side, and the part that becomes the bending part (6f) at the lower end of the part that becomes the falling part (6e) is substantially right angle on the back side. It consists of a joint body (6) that is bent,
Discard the lower plate of the waste plate (5) with the back surface of the lower joint portion (6d) of the joint body (6) positioned on the bent portion (5c) of the waste plate (5). Abutting against the surface of the plate portion (5b), the water-side falling portion (5d) of the discard plate (5) is connected to the falling portion (6e) and the bent portion (6f) of the joint body (6). In addition, the upper engaging portion (6a) of the joint body (6) is engaged with the joint plate engaging portion (5ea) of the upper side engaging portion (5e) of the discard plate (5). The roof plate joint, wherein the joint body (6) is installed at the center in the width direction of the discard plate (5).   The roof board according to claim 7, wherein the lower edge of the first folded part (6ba) and the third folded part (6da) is located on the water side as it goes to the center line side of the joint body (6). Fittings.   The roof plate joint according to claim 7 or 8, wherein the step portion (6c) of the joint main body (6) has an inclined portion (6cb) inclined toward the lower joint portion (6d) at the lower end thereof.   The plate material is a plate material in which a ridge (6g, 6g) parallel to the longitudinal direction is provided on the fold line side of each folded portion (6aa, 6ba, 6ca, 6da) of the joint body (6). 10. The roof plate joint according to any one of 9 to 9.   The plate material was folded back to the surface side by a folding line that is the same straight line as the folding line of each folding part (6aa, 6ba, 6ca, 6da) on both sides of the part that becomes the falling part (6e) of the joint body (6) The roof plate joint according to any one of claims 7 to 10, wherein the roof plate joint is a plate member provided with a fourth folded portion (6ea). The roof plate joint according to any one of claims 7 to 11, wherein the bent portion (5c) of the discard plate (5) is provided at substantially the center in the longitudinal direction.

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