Metal building panels and connecting structures for metal building panels

Abstract

To provide a metallic building board that is provided with firm and secure cut-off performance, and connection structure of the metallic building board.SOLUTION: In a metallic building board, a male tongue 100 is formed by protruding a metal skin outward at an upper end of the metallic building board that is composed of a core material 1100 coated with the metal skin, a female groove 500 is formed by recessing the metal skin inward at a lower end, and when coupling metallic building boards adjacent to each other in a vertical direction by abutting a male tongue side first arcuate connection piece 130 and a female groove side first arcuate connection piece 530 of the other metallic building board on each other by fitting of the male tongue 100 and the female groove 500, a rear face side end edge 110E of a male tongue side first inclined plane 110 is formed so as to be placed at a front face side as compared with a female groove side connection joint bottom face 520. Since rain water (water droplets) blown up by wind from beneath passes over a triangular space part from the male tongue side first inclined plane 110 and reaches the female groove side connection joint bottom face 520, connection structure of the metallic building board can efficiently restrain immersion of the rain water to an indoor side.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a metal building panel (sometimes referred to as metal siding) used for the outer wall of a building or the like, and particularly to a metal building panel and a connection structure of the metal building panel that can efficiently suppress the intrusion of rainwater into the indoor side (synonymous with the inner side, the rear side, the back side, the back surface side, and the back face side). The metal building panel forms a rectangular plate shape when viewed from the front, and there are cases where it is constructed in a "horizontal installation" where its longitudinal direction coincides with the horizontal direction and a "vertical installation" where its longitudinal direction coincides with the vertical (synonymous with perpendicular) direction. However, the metal building panel and the connection structure of the metal building panel according to the present invention are preferably applied to "horizontal installation".

Background Art

[0002] Conventionally, as an outer wall material having fitting portions configured to be mutually fitted at each end in the vertical direction in the case of forming a rectangular plate shape when viewed from the front and making its longitudinal direction coincide with the horizontal direction (constructed in a "horizontal installation"), a metal building panel is known. When using such an outer wall material, the outer wall can be formed by a method of sequentially installing adjacent outer wall materials in the vertical direction on the outer surface of the building by fitting them to each other in the vertical direction. This metal building panel generally has a metal surface material, a sheet-like backing material (such as an aluminum foil sheet), and a filler filled between the surface material and the backing material, which is a foamed heat insulating material.

[0003] In the connection of adjacent metal building panels in the vertical direction when such a metal building panel is constructed in a "horizontal installation", it is necessary to ensure good fitting workability, strong watertight performance, and no other problems. Japanese Patent No. 4306631 (Patent Document 1) discloses a connection structure of metal siding that is improved as required, can ensure good fitting workability, and can surely obtain strong water stopping performance.

[0004] The metal siding connecting structure disclosed in Patent Document 1 is a metal siding connecting structure in which a core material is covered with a metal outer shell, a fitting projection is formed at one end of the metal outer shell by curving the metal outer shell outward, and a fitting groove is formed at the other end by recessing the metal outer shell inward, a fixing piece is provided at the building-side end of one end of the metal siding with the metal outer shell protruding outward longer than the fitting projection, the fixing piece is fixed to the substrate by driving in fasteners such as nails, the metal siding is arranged along the substrate and adjacent metal sidings are connected by fitting the fitting projection and the fitting groove, the fitting groove A storage recess is formed in a roughly semicircular shape in the outdoor portion at the back of the structure, and a watertight material with a circular cross-section is stored in this storage recess so that a part of it protrudes into the fitting groove. A pressing bulge is formed on the outdoor portion of the protruding tip of the fitting projection, which protrudes outwards, and a gap is formed between the pressing bulge and the outdoor side surface of the fitting groove. The building-side portion of the fitting groove of one of the adjacent metal sidings is brought into contact with the building-side portion of the fitting projection of the other metal siding, which has a fixing piece fixed to the substrate, and the pressing bulge of this fitting projection is pressed outwards by biting into the watertight material, thereby fitting the fitting projection and the fitting groove together.

[0005] This metal siding connection structure allows for easy fitting of the interlocking protrusions and grooves of adjacent metal siding panels. The resulting fit ensures that the interlocking protrusions and grooves abut against each other on the building side, preventing the protrusions from rattling in the opposite direction to the packing's pressure. The pressure-protruding portion of the interlocking protrusions bites into the watertight material, which is stored without misalignment in the recess of the interlocking groove, and presses against the exterior side. This provides a strong and reliable waterproofing performance. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Patent No. 4306631 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] The metal siding interlocking structure disclosed in Patent Document 1 has been well-received for its ability to provide robust and reliable waterproofing performance, as described above. Incidentally, the conventional approach to achieving robust and reliable waterproofing performance has been to minimize the gap at the joint to suppress the accumulation of rainwater (water droplets). However, while suppressing rainwater accumulation in this way reduces the amount of rainwater that accumulates, it also tends to linger deep within the gap, making it difficult to integrate with rainwater flowing down from above. This approach has its limitations in that it tends to remain in the depths of the gap.

[0008] Therefore, the applicant has decided to address this issue by introducing a new approach to the metal siding connection structure described in Patent Document 1, which has been well-received: (1) In light of the fact that rainwater (droplets) blown up by wind from below tends to enter the gaps in the butt joints (fitting parts), the approach is to suppress the entry of such rainwater (droplets) into the gaps; and (2) In order to discharge the rainwater (droplets) that have entered and accumulated in the gaps by combining them with other rainwater (droplets) to increase their own weight and causing them to fall due to gravity.

[0009] This invention was developed in view of the limitations of the basic concepts in the prior art, and its objective is to provide a metal building panel, a type of exterior wall material used in buildings, that has strong and reliable water-stopping performance, and a connecting structure for metal building panels. [Means for solving the problem]

[0010] To achieve the above objectives, the metal building panel according to one aspect of the present invention and the connecting structure for the metal building panel according to another aspect of the present invention employ the following technical means. In other words, a metal building panel according to a certain aspect of the present invention is a metal building panel in which a core material is covered with a metal outer shell, a male joint is formed at one end of the metal building panel by projecting the metal outer shell outward, and a female joint is formed at the other end of the metal building panel by recessing the metal outer shell inward, a fixing piece is provided at the building-side end of one end of the metal building panel by projecting the metal outer shell outward from the tip of the male joint, the fixing piece is fixed to the substrate with fasteners including screws, the metal building panel is arranged along the substrate, and adjacent metal building panels are connected to each other by fitting the male joint and the female joint, wherein the male joint is located at the surface-side corner of one end and has a first male joint-side inclined surface that slopes outward on the back side, a second male joint-side inclined surface that is continuous from the back-side edge of the first male joint-side inclined surface and slopes toward the back side, and a first male joint-side arc-shaped connecting piece that is continuous from the back-side edge of the second male joint-side inclined surface and is parallel to the surface The female joint comprises a male joint side first contact surface extending outward, the female joint is located at the surface side corner of the other end and inclined outward on the back side, a female joint side connecting joint bottom surface that is continuous from the back side edge of the female joint side first inclined surface and extends outward parallel to the surface, and a female joint side first contact surface that is continuous from the outer side edge of the female joint connecting joint bottom surface via a female joint side first arc-shaped connecting piece and extends inward parallel to the surface, and adjacent to one The metal building panel is characterized in that, when the first abutting surface on the male side of one metal building panel is brought into contact with the first abutting surface on the female side of the other metal building panel, and the first arc-shaped connecting piece on the male side of one metal building panel is brought into contact with the first arc-shaped connecting piece on the female side of the other metal building panel, adjacent metal building panels are connected by fitting the male and female parts together, and the back edge of the first inclined surface on the male side is positioned on the front side of the bottom surface of the connecting joint on the female side.

[0011] Preferably, in the metal building panel described above, the first arc-shaped connecting piece on the male side and the first arc-shaped connecting piece on the female side are in continuous surface contact from the contact portion between the second inclined surface on the male side and the first arc-shaped connecting piece on the female side, and the first contact surface on the male side and the first contact surface on the female side are in continuous surface contact. Furthermore, a connecting structure for metal building panels according to another aspect of the present invention is a connecting structure for metal building panels in which a metal building panel, having a core material covered with a metal outer shell, has a male joint formed at one end by projecting the metal outer shell outward, and a female joint formed at the other end by recessing the metal outer shell inward, and adjacent metal building panels are connected by fitting the male joint and the female joint, wherein the male joint is located at the surface corner of the one end and has a first inclined surface on the male joint side that inclins outward on the back side, a second inclined surface on the male joint side that is continuous from the back edge of the first inclined surface on the male joint side and inclined on the back side, and a first contact surface on the male joint side that is continuous from the back edge of the second inclined surface on the male joint side via a first arc-shaped connecting piece on the male joint side and extends outward parallel to the surface, and the female joint is located at the surface corner of the other end, The metal building panel comprises a first inclined surface on the female side that slopes outward on the back side, a bottom surface of a connecting joint on the female side that extends outward parallel to the front surface and is continuous with the back edge of the first inclined surface on the female side, and a first abutment surface on the female side that extends inward parallel to the front surface and is continuous with the outer edge of the bottom surface of the connecting joint on the female side via a first arc-shaped connecting piece on the female side, and is characterized in that when the adjacent metal building panels are connected by fitting the male side to the female side, the back edge of the first inclined surface on the male side is positioned on the front side of the bottom surface of the connecting joint on the female side.

[0012] Preferably, in the above-described connecting structure for metal building panels, the male side second inclined surface and the female side first arc-shaped connecting piece are in continuous surface contact from the contact portion between the male side second inclined surface and the female side first arc-shaped connecting piece, and the male side first contact surface and the female side first contact surface are in continuous surface contact. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a metal building panel, which is a type of exterior wall material used in buildings, that has strong and reliable water-stopping performance, and a connecting structure for metal building panels. [Brief explanation of the drawing]

[0014] [Figure 1] (A) is a perspective view and (B) is a side view showing the entire exterior wall 10 constructed by horizontally installing metal building panels 1000 according to an embodiment of the present invention. [Figure 2] A perspective view showing one metal building panel 1000. [Figure 3] (A) Front view (surface view), (B) Side view of one metal building panel 1000. [Figure 4] This is a cross-sectional view showing a connecting structure in which a male joint 100 and a female joint 500 of a metal building panel 1000 are fitted together. [Figure 5] Figure 4 is a cross-sectional view of male fruit 100. [Figure 6] Figure 4 is a cross-sectional view of the female fruit 500. [Figure 7] This is a diagram (part 1) illustrating the characteristics and effects of the connecting structure in Figure 4. [Figure 8] This is a second diagram illustrating the characteristics and effects of the connecting structure shown in Figure 4. [Modes for carrying out the invention]

[0015] The metal building panel 1000 and the connecting structure of the metal building panel 1000 according to embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 1 and 2, this metal building panel 1000 is a building material that constitutes the outer wall 10 used for a building. Its overall shape is substantially rectangular (substantially rectangular) when viewed from the front. Assuming that the dimension L in the longitudinal direction is 4000 (a relative value, not an absolute value), it has a shape with the dimension H in the short direction (working width) being 360 to 580 and the thickness t being 14 to 23. For example, in terms of absolute values, the longitudinal direction L is 4000 mm or L 3030 mm (hereinafter, L 3030 mm is used), the short direction H is 430 mm (working width of 400 mm excluding the male part 100 and the female part 500), and the thickness t is 16 mm. It has such a shape and is an outer wall material with features such as having fitting parts (male part 100 and female part 500) at the upper and lower ends when the longitudinal direction is aligned with the horizontal direction, so that the connection structure is stable.

[0016] In addition, this metal building panel 1000 is constructed in a "horizontal installation" where the longitudinal direction coincides with the horizontal direction. Hereinafter, based on this horizontal installation state, as shown in FIG. 1, the direction parallel to the short direction is defined as the "vertical direction", the direction parallel to the longitudinal direction is defined as the "horizontal direction", and the direction orthogonal to the vertical direction and the horizontal direction is defined as the "front-back direction" (front-back direction / surface-back surface direction / outdoor-indoor direction) is used.

[0017] As shown in FIGS. 1 to 6, this metal building panel 1000 has a core material 1100 made of a foamed heat insulating material such as polyisocyanurate foam or polyurethane. The surface of this core material 1100 is covered with a surface material (metal outer skin) made of a metal plate. Further, the back surface of the core material 1100 is covered with a back surface material 1110 made of aluminum foil or the like. The back surface material 1110 is provided so as to cover the back surface of the core material 1100 after or when expanding the foamed heat insulating material to form the core material 1100. On the front side (front side, outdoor side) of this metal building panel 1000, horizontal concave grooves 1020 are formed as a design (three locations for each metal building panel). The shape of this concave groove 1020 forms substantially the same design as the state in which the male part 100 and the female part 500 forming the fitting part are fitted. As shown in FIG. 1, in the outer wall 10 in which a plurality of metal building panels 1000 are horizontally arranged, substantially the same concave grooves are repeated (so that the fitting part is not conspicuous, like one large metal building panel instead of a plurality of metal building panels 1000).

[0018] The upper and lower ends of this metal building panel 1000 are shaped such that a plurality of metal building panels 1000 are arranged vertically and fitted to each other. On the lower end of the metal building panel 1000, a female part 500 that covers the core material 1100 and recesses the metal outer skin inward is provided. On the upper end of the metal building panel 1000, a male part 100 that fits into the female part 500 and projects the metal outer skin that covers the core material 1100 and forms the surface of the metal building panel 1000 outward is formed. Then, in the state where the metal building panels 1000 are arranged vertically, the fixing piece 200 of the lower metal building panel 1000 is fixed to the base 1200 with a fixing tool 1300 such as a screw or a nail, and the female part 500 of the upper metal building panel 1000 fits (is fitted) into the male part 100 of the lower metal building panel 1000 for construction.

[0019] The surface of the metal building panel 1000 is made of a thin metal sheet material (painted steel sheet, etc.) with a thickness of approximately 0.3 mm, and forms the appearance of the metal building panel 1000. This surface material (metal skin) is formed by roll forming or the like, and on the surface, between the male joint 100 and female joint 500 described above, a flat section 1010, a groove 1020 (described above), a flat section 1010, a groove 1020, a flat section 1010, a groove 1020, and a flat section 1010 are formed in that order from top to bottom. In other words, the flat sections 1010 and grooves 1020 are formed at the same interval and are arranged alternately in the vertical direction.

[0020] In the following, the metal building panel 1000 according to this embodiment and the connecting structure of the metal building panel according to this embodiment will be described in detail. Here, in particular, the male and female joints 100 and 500 provided on the metal building panel 1000 will be described in detail, and the connecting structure formed by the fitting of the male and female joints 100 and 500 will be described in detail. In this embodiment, the metal building panel 1000 is formed by covering a core material 1100 with a metal outer shell (which forms the surface of the metal building panel 1000). A male joint 100 is formed at one end (here, the upper end) of the metal outer shell by projecting outward, and a female joint 500 is formed at the other end (here, the lower end) by recessing the metal outer shell inward.

[0021] Then, as shown in Figures 4 and 5, a fixing piece 200 is provided protruding from the building-side end of one side of the metal building panel 1000, with the metal outer sheath projecting outward from the tip of the male tongue 100. As shown in Figure 7(A), the fixing piece 200 is fixed to the base 1200 with fasteners 1300 including screws and nails, and the metal building panel 1000 is arranged along the base 1200, while adjacent (in this case, adjacent vertically) metal building panels are connected by fitting the male tongue 100 and female tongue 500 together.

[0022] More specifically, as shown in Figures 4 and 5, the male joint 100 is located at the surface-side corner 102 of one end (here, the upper end of the metal building panel 1000) and comprises a first male joint-side inclined surface 110 that inclins outward on the back side, a second male joint-side inclined surface 120 that is continuous with the back-side edge 110E of the first male joint-side inclined surface 110 and inclined on the back side, and a first male joint-side contact surface 140 that is continuous with the back-side edge 120E of the second male joint-side inclined surface 120 via the first male joint-side arc-shaped connecting piece 130 and extends outward parallel to the surface. Also, as shown in Figures 4 and 6, the female joint 500 is located at the surface-side corner 502 of the other end (here, the lower end of the metal building panel 1000), The joint comprises a first inclined surface 510 on the back side that slopes outward, a bottom surface 520 on the back side connecting joint that extends outward parallel to the front surface and is continuous with the back side edge 510E of the first inclined surface 510, and a first contact surface 540 on the back side connecting joint that extends inward parallel to the front surface and is continuous with the outer side edge 520E of the bottom surface 520 via a first arc-shaped connecting piece 530 on the back side.

[0023] Then, as shown in Figure 4, when the first abutment surface 140 on the male tongue side of one (here, the lower) metal building panel 1000 and the first abutment surface 540 on the female tongue side of the other (here, the upper) metal building panel 1000 are brought into contact, and the first arc-shaped connecting piece 130 on the male tongue side of one metal building panel 1000 and the first arc-shaped connecting piece 530 on the female tongue side of the other metal building panel 1000 are brought into contact, and the adjacent metal building panels 1000 are connected by fitting the male tongue 100 and the female tongue 500, the back edge 110E of the first inclined surface 110 on the male tongue side is formed to be on the front side of the female tongue side connection joint bottom surface 520, as shown in Figure 7(A) where the straight line LM is located on the surface side (front side, outdoor side) than the straight line LL.

[0024] Furthermore, the connecting structure for metal building panels according to this embodiment is a connecting structure that has the features described above. More specifically, this is a connecting structure in which adjacent metal building panels 1000 having the structural features described above are placed adjacent to each other (in the vertical direction), and the first contact surface 140 on the male tongue side of one adjacent metal building panel 1000 (here, the lower one) is brought into contact with the first contact surface 540 on the female tongue side of the other metal building panel 1000 (here, the upper one), and the first arc-shaped connecting piece 130 on the male tongue side of one metal building panel 1000 is brought into contact with the first arc-shaped connecting piece 530 on the female tongue side of the other metal building panel 1000, thereby connecting adjacent metal building panels 1000 by fitting together a male tongue 100 and a female tongue 500. As shown in Figure 7(A) by the fact that the straight line LM is located on the surface side (front side, outdoor side) than the straight line LL, this is a connecting structure characterized in that the back edge 110E of the first inclined surface 110 on the male tongue side is formed to be on the surface side than the bottom surface 520 of the connecting joint on the female tongue side.

[0025] Furthermore, in the metal building panels 1000 according to this embodiment, when the metal building panels 1000 are connected by fitting the male joint 100 and the female joint 500 together, the male joint side second inclined surface 120 and the female joint side first arc-shaped connecting piece 530 are in continuous surface contact from the contact portion 130T between the male joint side first arc-shaped connecting piece 130 and the female joint side first arc-shaped connecting piece 530, and the male joint side first contact surface 140 and the female joint side first contact surface 540 are in continuous surface contact. The connecting structure of the metal building panels according to this embodiment is characterized by being formed such that the male joint side first arc-shaped connecting piece 130 and the female joint side first arc-shaped connecting piece 530 are in continuous surface contact, and the male joint side first contact surface 140 and the female joint side first contact surface 540 are in continuous surface contact.

[0026] Next, the metal building panels 1000 and the connecting structure of the metal building panels according to this embodiment, other than those described above, will be explained in detail with reference to Figures 4 to 6. As shown in Figures 4 and 5, the male joint 100 of the metal building panel 1000 according to this embodiment includes a male joint side connecting inclined surface 150 that is continuous with the male joint side first contact surface 140 and inclined toward the back side, a male joint side connecting plane 160 that is continuous with the male joint side connecting inclined surface 150 and extends outward parallel to the surface, a male joint side second arc-shaped connecting piece 170 that is continuous with the male joint side connecting plane 160 and changes direction by 180 degrees, and a male joint side second arc-shaped connecting piece 170 that extends inward parallel to the surface. The device further comprises a male-to-bodied second contact surface 180, a male-to-bodied third arc-shaped connecting piece 190 that is continuous with the male-to-bodied second contact surface 180 and changes direction by 180 degrees, a (male-to-bodied) fixing piece 200 that is continuous with the male-to-bodied third arc-shaped connecting piece 190 and extends outward parallel to the surface, a male-to-bodied fourth arc-shaped connecting piece 210 that is continuous with the fixing piece 200 and changes direction by 180 degrees, and a male-to-bodied end plane 220 that is continuous with the male-to-bodied fourth arc-shaped connecting piece 210 and extends inward parallel to the surface.

[0027] Furthermore, as shown in Figures 4 and 6, the female joint 500 provided by the metal building panel 1000 according to this embodiment includes a female joint connecting inclined surface 550 that is continuous with the first contact surface 540 on the female joint side and is gently inclined (approximately 20 to approximately 30 degrees) towards the back side, a female joint second arc-shaped connecting piece 560 that is continuous with the female joint connecting inclined surface 550 and changes direction by approximately 150 to approximately 160 degrees (not 180 degrees because the female joint connecting inclined surface 550 is gently inclined (approximately 20 to approximately 30 degrees)), and the female joint side The device further comprises a second female contact surface 570 that is continuous with the second arc-shaped connecting piece 560 and extends outward parallel to the surface, a third female arc-shaped connecting piece 580 that is continuous with the second female contact surface 570 and changes direction by 180 degrees, and a female end plane 590 that is continuous with the third female arc-shaped connecting piece 580 and extends inward parallel to the surface.

[0028] Furthermore, the metal building panel connecting structure according to this embodiment is characterized in that, when metal building panels 1000 are connected by fitting a male joint 100 and a female joint 500, the second contact surface 180 on the male joint side and the second contact surface 570 on the female joint side are formed to be in continuous surface contact, as shown in Figure 4. In the metal building panel connecting structure according to this embodiment, as shown in Figure 4, a watertight material 300 is provided in the space formed by the outer side of the second arc-shaped connecting piece 170 on the male joint side as seen from the male joint 100 and the outer side of the second arc-shaped connecting piece 560 on the female joint side as seen from the female joint 500. This watertight material 300 is, for example, a dry packing which is an elastically deformable solid resin body in the shape of a rod (about 5 mm in diameter). Here, in Figure 4, the shape of such a packing before deformation is shown by a dotted line. A wet type may also be used, for example, a hot melt adhesive can be used.

[0029] Next, the effects of the metal building panel 1000 and the connecting structure for the metal building panel according to this embodiment, which have the features described above, will be explained in detail with reference to Figures 7 and 8. As shown in Figure 7(A), when metal building panels 1000 are connected by fitting a male tongue 100 and a female tongue 500, the back edge 110E of the first inclined surface 110 on the male tongue side is positioned on the front side than the bottom surface 520 of the connecting joint on the female tongue side, as indicated by the fact that the straight line LM is located on the surface side (front side, outdoor side) than the straight line LL. Furthermore, a triangular space TR is formed by the second inclined surface 120 on the male tongue side and the first arc-shaped connecting piece 530 on the female tongue side.

[0030] Therefore, as shown by the dotted arrow in Figure 7(B), rainwater (droplets) blown up by the wind from below jumps over the triangular space TR from the first inclined surface 110 on the male side to the bottom surface 520 of the connecting joint on the female side, thus efficiently suppressing the intrusion of rainwater into the indoor side. Furthermore, as shown in Figures 7(C) and 8, because the triangular space TR is formed, some rainwater (droplets) can be retained in this triangular space TR, and the rainwater (droplets) retained in this triangular space TR can combine with rainwater (droplets) flowing from above, making it easier for the rainwater (droplets) in the gap of the butt joint (fitting part) to flow down together. Note that Figure 8 is a diagram showing the sequence from (A) to (D) in chronological order.

[0031] First, as shown in Figure 8(A), with some rainwater W(D) accumulating in the triangular space TR, rainwater W(U) flows down from above as indicated by the solid arrow. After some time, as shown in Figure 8(B), the rainwater W(U) flows down to the position of the rainwater W(D) accumulating in the triangular space TR, and the rainwater W(D) and rainwater W(U) merge to form combined rainwater W(+) as shown in Figure 8(C). Then, as shown in Figure 8(D), the combined rainwater W(+) has increased in weight and falls due to gravity, which allows the rainwater W(D) that has entered the gap and accumulated to be discharged.

[0032] Thus, in the metal building panels and connecting structures for metal building panels according to this embodiment, we were able to achieve robust and reliable water-stopping performance by introducing new ideas: (1) the idea of ​​suppressing rainwater (droplets) blown up by wind from below from entering the gaps in the butt joints (fitting parts), and (2) the idea of ​​combining (combining) rainwater (droplets) that have entered and accumulated in the gaps with other rainwater (droplets) to increase their own weight and cause them to fall due to gravity.

[0033] As described above, the metal building panel and the connecting structure for metal building panels according to this embodiment provide a metal building panel, which is a type of exterior wall material used in buildings, and which has strong and reliable water-stopping performance, and a connecting structure for metal building panels. It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is indicated by the claims rather than the foregoing description, and all modifications within the meaning and scope of equivalents of the claims are intended to be understood. It is illustrated.

[0034] Herein lies an example of the metal building panel and connecting structure for metal building panels according to the present invention (the metal building panel and connecting structure for metal building panels as described in each claim of the patent claims). As described above, the metal building panel 1000 according to the embodiment of the present invention is formed from a thin metal sheet material, and during its formation, manufacturing errors (in addition to the design dimensional tolerances) inevitably occur. Therefore, even if it is described as simply "parallel" rather than "approximately parallel," it is not limited to strictly "parallel" in accordance with general technical common sense. Furthermore, such general technical common sense should also apply to the description of the claims that define the technical scope of the patented invention. For example, even if it is described as simply "parallel" rather than "approximately parallel" in the claims, it is not permissible to define the technical scope of the patented invention by limiting it to strictly "parallel" in accordance with general technical common sense. [Industrial applicability]

[0035] This invention is preferable for building panels (exterior wall materials) used in buildings, and is particularly preferable in that it provides strong and reliable water-stopping performance. [Explanation of symbols]

[0036] 10 Exterior walls 100 Male Fruit 110 First inclined surface on the male fruit side 120 Second inclined surface on the male fruit side 130 First arc-shaped connecting piece on the male side 140 First contact surface on the male side 150 Male side connecting slope 160 Male side connection plane 170 Second arc-shaped connecting piece on the male side 180 Second contact surface on the male side 190 Male fruit side third arc-shaped connecting piece 200 Fixed piece 210 Male fruit side fourth arc-shaped connecting piece 220 Male end plane 300 Watertight material 500 female fruits 502 Surface side corner 510 Female side first inclined surface 520 Female tongue-and-groove connecting joint bottom surface 530 Female side first arc-shaped connecting piece 540 First contact surface on the female side 550 Female side connecting inclined surface 560 Female side second arc-shaped connecting piece 570 Second contact surface on the female side 580 Female side third arc-shaped connecting piece 590 Female side end plane 1000 Metal building panels 1010 Plane part 1020 groove 1100 Core material 1110 Backing material 1200 Primer 1300 Fixtures

Claims

1. A metal building panel, formed by covering a core material with a metal outer shell, has a male joint formed at one end by projecting the metal outer shell outward, and a female joint formed at the other end by recessing the metal outer shell inward. A metal building panel is provided in which a fixing piece is provided on the building-side end of one side of the metal building panel, with the metal outer sheath protruding outward from the tip of the male joint, and the fixing piece is fixed to the substrate with fasteners including screws, thereby arranging the metal building panel along the substrate, and adjacent metal building panels are connected to each other by fitting the male joint and the female joint, The aforementioned male fruit, The first inclined surface on the male side is located at the surface-side corner of the aforementioned end and inclined outward on the back side, A second inclined surface on the male fruit side, which is continuous with the back edge of the first inclined surface on the male fruit side and inclined toward the back side, The male-side first contact surface extends outward parallel to the surface, continuous with the back edge of the male-side second inclined surface via the male-side first arc-shaped connecting piece, The aforementioned female fruit is The female side first inclined surface is located at the surface-side corner of the other end and inclined outward on the back side, The bottom surface of the connecting joint on the female side extends outward from the back edge of the first inclined surface on the female side, and is continuous with the back edge of the female side, and is parallel to the front surface. The female tongue-side connection joint bottom surface is continuous with the female tongue-side first arc-shaped connecting piece, and comprises a female tongue-side first contact surface that extends inward parallel to the surface, A metal building panel characterized in that, when adjacent metal building panels are connected by fitting the male and female tongues together, the back edge of the first inclined surface on the male tongue side is positioned on the front side of the female tongue joint bottom surface, by bringing the first abutting surface on the male tongue side of one metal building panel and the first arc-shaped connecting piece on the female tongue side of the other metal building panel into contact, the adjacent metal building panels are formed such that the back edge of the first inclined surface on the male tongue side is positioned on the front side of the female tongue joint bottom surface.

2. The metal building panel according to claim 1, characterized in that the first arc-shaped connecting piece on the male side and the first arc-shaped connecting piece on the female side are in continuous surface contact from the contact portion between the second inclined surface on the male side and the first arc-shaped connecting piece on the female side, and the first contact surface on the male side and the first contact surface on the female side are in continuous surface contact.

3. A metal building panel connecting structure is provided, wherein a metal building panel, formed by covering a core material with a metal outer shell, has a male joint formed at one end by projecting the metal outer shell outward, and a female joint formed at the other end by recessing the metal outer shell inward, and adjacent metal building panels are connected by fitting the male and female joints together. The aforementioned male fruit, The first inclined surface on the male side is located at the surface-side corner of the aforementioned end and inclined outward on the back side, A second inclined surface on the male fruit side, which is continuous with the back edge of the first inclined surface on the male fruit side and inclined toward the back side, The male-side first contact surface extends outward parallel to the surface, continuous with the back edge of the male-side second inclined surface via the male-side first arc-shaped connecting piece, The aforementioned female fruit is The female side first inclined surface is located at the surface-side corner of the other end and inclined outward on the back side, The bottom surface of the connecting joint on the female side extends outward from the back edge of the first inclined surface on the female side, and is continuous with the back edge of the female side, and is parallel to the front surface. The female tongue-side connection joint bottom surface is continuous with the female tongue-side first arc-shaped connecting piece, and comprises a female tongue-side first contact surface that extends inward parallel to the surface, The first contact surface of the male tongue side of one adjacent metal building panel and the first contact surface of the female tongue side of the other metal building panel A connecting structure for metal building panels, characterized in that when adjacent metal building panels are connected by fitting the male and female tongues together, with the contact surfaces abutting, and the first arc-shaped connecting piece on the male tongue side of one metal building panel abutting with the first arc-shaped connecting piece on the female tongue side of the other metal building panel, the back edge of the first inclined surface on the male tongue side is positioned on the front side of the bottom surface of the connecting joint on the female tongue side.

4. The metal building panel connecting structure according to claim 3, characterized in that the male side second inclined surface and the female side first arc-shaped connecting piece are in continuous surface contact with the female side first arc-shaped connecting piece from the contact portion between the male side second inclined surface and the female side first arc-shaped connecting piece, and the male side first contact surface and the female side first contact surface are in continuous surface contact.

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