JP2011196121A - Connecting structure of metal roofing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure of metal roofing, improving executability of work by fixing the metal roofing to a main house through a splicing fitting by a short self-drilling screw.SOLUTION: This connecting structure of metal roofing includes: a metal roofing 21 in which heat insulating material 24 is integrated between a metal upper plate 22 provided with half-mountain parts 21a, 21b formed at both sides and a lower plate 23, one side lower part of which is provided with an engagement projection 21e, the other side lower part thereof being provided with an engagement recessed part 21f engaged with the engagement projection; a splicing fitting 25, which is L-shaped and jointly fastened and fixed to the main house 30, with a horizontal part 25a placed on the engagement projection, by the self-drilling screw 26, and a vertical part 25b of which abuts on the heat insulating material and extends upward, so that a locking part 25d at the upper end locks the heat insulating material of the adjacent metal roofing; locking parts 22c, 22d formed by extending upward the upper plate 22 above the half-mountain parts with upper ends thereof turned back toward the half-mountain parts; and a cap 27 mounted to the locking parts of the half-mountain parts to which the adjacent metal roofing abuts so that locking parts 27b thereof are locked on the lower ends of the locking parts of the half-mountain parts.

Description

  The present invention relates to a connection structure for a metal roof material.

  In recent years, vertical roof metal roofing materials have begun to be used as roofing materials for large stores and warehouses in the suburbs. In connection with this, various connection structures for metal roof materials have been proposed. As a connection structure of a metal roof material, there is a structure in which a metal roof panel having a heat insulating structure is connected to a roof base (main house) (see, for example, Patent Document 1).

  As shown in FIG. 8, this metal roof connection structure is one in which the folded roof panel P is overlapped in the left-right direction on the roof base A, and the folded roof panel P includes the mountain portions 1a and 1b and the valley portion 2. A heat insulating material 4 is integrally formed between a metal roofing material 3 made of a coated steel plate located outside and a lower plate located inside. The folded roof panel P is formed by overlapping the flat surfaces of the crests 1a and 1b at the left and right ends of the adjacent metal roofing materials 3 and 3, and self-drilling screws 5 from the upper outside on these crests 1a and 1b. Is fixed to the roof base A. The self-drilling screw 5 has a cutting edge 10 at the end of a long shaft 9, and the flat surface portions of the peaks 1 a and 1 b of the metal roof material 3 and 3, the heat insulating material 4, and then the roof from the cutting edge 10 side. The cap receiver 12 is fixed to the outer periphery of the screw head 11 and is screwed into the base A.

JP 2004-339822 A (FIG. 2, pages 4-6)

  However, in the above connection structure, the long self-drilling screw 5 is screwed into the roof base A through the heat insulating material 4 from the flat surface portion of the mountain portions 1a and 1b where the adjacent metal roof materials 3 and 3 overlap. It has become. For this reason, the shaft 9 is bent and screwed to be detached from the roof base A, and the metal roof material 3 may not be fixed to the roof base A. For this reason, the workability is poor and the work requires skill.

  Further, the metal roofing material 3 is formed with high mountain parts 1a and 1b in order to prevent rainwater from entering from the self-drilling screws 5 penetrating the mountain parts 1a and 1b and to improve rain performance. The height from the part 1a * 1b to the roof base A becomes high. As a result, the self-drilling screw 5 becomes long. Since the self-drilling screw 5 is long, the strength is lowered, and there is a possibility that the self-drilling screw 5 may be broken by its own load due to the inclination of the metal roof material 3.

  Originally, the long self-drilling screw 5 is high in cost, and further, if it is thickened to prevent breakage as described above, the cost further increases.

  Further, since the screw head 11 of the self-drilling screw 5 protrudes from the flat surface portion of the peak portion 1 b of the metal roof material 3, even if the packing 6, the washer 7 and the cap receiver 12 are attached, these packing 6 and washer 7. In addition, there is a problem that it causes rain leakage due to deterioration due to aging of the seal portion between the cap receiver 12 and the cap receiver 12. If the self-drilling screw 5 is tightened too much, the screw head 11 is pushed into the ridges 1a and 1b and a dent is generated, and rainwater accumulates in the dent and causes rain leakage.

  Furthermore, the metal roofing material 3 and the roof base A are thermally connected by connecting the peak portions 1a and 1b of the metal roofing material 3 and 3 and the metal roof base A via the self-drilling screw 5. This causes deformation of the metal roofing material 3 due to thermal strain and rain leakage associated therewith.

  An object of the present invention is to fix a metal roofing material to a main building through a connection fitting with a short self-drilling screw to improve workability, and to prevent rain leakage from a connecting portion of adjacent metal roofing materials. It is to provide a connection structure.

In order to solve the above-described problems, the connection structure of the metal roof material according to the present invention is:
A metal roofing material is formed by integrating a heat insulating material between a metal upper plate and a metal lower plate, which are half-crested along the longitudinal direction on both sides. A metal roofing material connecting structure in which a half mountain part of an adjacent metal roofing material is brought into contact with and fixed to the main building, and a cap is attached to the abutting half mountain part,
The metal roofing material is formed with an engaging protrusion over the entire length along the longitudinal direction at the lower part on one side, and can be engaged with the engaging protrusion over the entire length along the longitudinal direction at the lower part on the other side. An engaging recess is formed,
The upper half of the upper plate is formed with a locking portion in which the upper portion of the half peak extends upward and the upper end is folded back toward the half peak.
The engaging protrusion is formed such that one side of the lower plate protrudes laterally with a substantially square cross-section over the entire length along the longitudinal direction, and an end portion extends toward the half-mountain portion and is one side of the heat insulating material. Formed fixed to the end face,
The engaging recess is recessed so that the other side of the lower plate can be engaged with the engaging protrusion along the entire length along the longitudinal direction, and an end portion extends toward the half-mountain and the other side of the heat insulating material. Formed fixed to the end face,
The connection fitting is substantially L-shaped, and is placed on the engagement protrusion and is fixed to the purlin together with the self-drilling screw, and is in contact with the end surface of the heat insulating material and is upward. A vertical portion provided with a locking portion for locking the heat insulating material of the metal roof material adjacent to the upper end of the extension is formed,
The cap has a substantially inverted U-shape, and is mounted over the entire length of the locking portion of the half-mountain that abuts along the longitudinal direction of the adjacent metal roofing material, and the half-peaking portion is locked at the lower part of both sides. A locking portion that is locked to the lower end of the portion is formed.

  The metal roofing material has heat insulation properties by integrating a heat insulating material between a metal upper plate and a metal lower plate. The horizontal portion of the connection fitting is placed on the engagement protrusion of the metal roof material, and is fastened and fastened to the main building with a self-drilling screw. By forming the engagement protrusion of the metal roof material on the lower part on one side, the distance from the upper surface of the engagement protrusion to the purlin is shortened, and the length of the self-drilling screw that penetrates the heat insulating material and fixes it to the purlin, Compared with the conventional one, it can be shortened (about 1/3), and the cost of the self-drilling screw can be reduced. Further, since the self-drilling screw is shortened, the strength is increased and it is easy to screw straight into the engaging protrusion, thereby improving the workability.

  The engaging recess of the metal roof material that is newly sputtered adjacent to the metal roof material is engaged with the engaging protrusion of the fixed metal roof material, and the latch formed at the tip of the vertical portion of the connection fitting The heat insulating material of the adjacent metal roofing material is locked by the part. And the half-mountain part of the adjacent metal roof material newly crazed is made to contact | abut the half-mountain part of the metal roof material sown previously. Adjacent half ridges form one ridge, and the locking part also forms one ridge. Attach a cap to the locking part that forms this one peak, and lock the lower locking parts on both sides to the lower ends of both locking parts that form one peak, Are brought into contact with the upper surface (surface) of each half-mountain portion.

  The cap is prevented from deviating by locking both locking portions to both lower ends of the locking portions forming a single chevron, and each bottom end abuts against the upper surface of each half-mountain, so that rainwater Prevent the intrusion. Moreover, the latching part of the half mountain part is formed by extending the upper part of the half mountain part of the upper plate upward, the front end is folded back to the half mountain part side, and the lower end latches the latching part of the cap. Since the lower end of the cap abuts against the upper surface of the half-mountain, the intrusion of rainwater can be prevented very effectively. In this way, the metal roof materials are sequentially connected adjacent to each other.

Moreover, the connection structure of the metal roof material which concerns on Claim 2 of this invention is the connection structure of the metal roof material of Claim 1,
The engaging protrusion is formed in a tapered surface whose upper surface is flat and the end surface is inclined inward from the upper end to the lower end, and the engaging recess has an end surface facing the tapered surface of the engaging protrusion. Accordingly, it is characterized in that it is formed in a tapered surface inclined outward from the upper end to the lower end, and an accommodating portion for accommodating the head of the self-drilling screw is provided in the upper portion.

  A taper surface inclined inward from the upper end to the lower end formed on the engagement protrusion of the adjacent metal roof material and a taper surface inclined outward from the upper end to the lower end of the opposing engagement recess of the adjacent metal roof material By doing so, the taper surface of the engagement recess is suppressed from above by the taper surface of the engagement protrusion, and the engagement recess is prevented from floating. As a result, it is possible to effectively prevent the adjacent metal roofing material from being lifted on the side of the engaging recess, and the strength of the metal roofing material against negative pressure can be increased.

  Moreover, since the head of the self-drilling screw is accommodated in the engagement recess, the head of the self-drilling screw does not protrude to the upper part (outside) of the metal roof material, and rainwater is transmitted through the self-drilling screw. It is possible to prevent entry into the connecting portion. In addition, the self-drilling screw is not visible from the outside, so it looks good.

Moreover, the connection structure of the metal roof material which concerns on Claim 3 of this invention is the connection structure of the metal roof material of Claim 1 or Claim 2,
The engagement protrusion is characterized in that a ridge is formed over the entire length along the longitudinal direction on one end face side of the heat insulating material on the upper surface.

  A cap is attached to the upper part of the half mountain part where the adjacent metal roofing material abuts, but rain water intrudes into the connection part from the contact part of the half mountain part, or in the cap. When the condensed water enters the connection portion, the intruded water flows into the ridge provided on the upper surface of the engaging projection and is discharged to the outside. Thereby, the rain leak from the connection part of a metal roof material can be prevented.

Moreover, the connection structure of the metal roof material which concerns on Claim 4 of this invention is the connection structure of the metal roof material of Claim 1,
The connection fitting is substantially L-shaped, and is placed between a horizontal portion that is placed on the engagement protrusion and is fastened to the purlin together with the self-drilling screw, and a half-mountain portion of the adjacent metal roofing material. A first locking portion that extends upward through the upper end and locks the locking portion of one half-mountain portion from above, and a second locking portion that locks the locking portion of the other half-mountain portion from above. The vertical part provided with is formed.

  Place the horizontal part of the connecting bracket on the engaging projection, and lock the first locking part formed on the upper end of the vertical part of the connecting bracket over the locking part of the half-height part of the metal roof material from above Then, the horizontal portion and the engaging protrusion are fastened and fixed to the purlin with self-drilling screws. Then, the engagement concave portions of the adjacent metal roofing materials are engaged, and the vertical portions of the connecting metal fittings are extended upward through the upper portions of the respective half-mountain portions of these adjacent metal roofing materials, and are formed at the upper ends. The two locking portions are bent so as to press down the locking portions of the adjacent metal roof material half-mountain from the upper side (outside), and the locking portions are fixed. In this way, the locking portions of the adjacent metal roof materials are connected and fixed.

  According to the present invention, the engagement protrusion is formed in the lower part on one side of the metal roof material, and the engagement recess is formed in the lower part on the other side, so that the distance from the upper surface of the engagement protrusion to the purlin is shortened. The length of the self-drilling screw that penetrates the mating protrusion and is fixed to the main building can be made shorter than the conventional one, and the cost of the self-drilling screw can be reduced. Further, since the self-drilling screw is shortened, the strength is increased, and it becomes easy to screw the engaging protrusion straight, thereby improving the workability. Moreover, the structure of the connection fitting is simple, and the cost and workability are excellent.

  In addition, by locking the engagement protrusion and the engagement recess of the adjacent metal roof material with the tapered surface, it is possible to prevent the metal roof material from being lifted, and to increase the strength of the metal roof material against negative pressure. Can do.

  In addition, even if rainwater enters the connecting portion from the contact portion of the half-mountain portion or water condensed in the cap enters the connecting portion, the intruded water is provided on the upper surface of the engaging protrusion. It can be discharged to the outside through the fence, and rain leakage from the connection part of the metal roofing material can be prevented.

It is a partial cross section figure of the metal roof material connected by the connection structure of the metal roof material which concerns on one Embodiment of this invention. It is an enlarged view of the both sides of the metal roof material shown in FIG. It is a perspective view of the connection metal fitting shown in FIG. It is a perspective view of the cap with which the peak part of the adjacent metal roof material shown in FIG. 1 is mounted | worn. It is an enlarged view of the connection part of the metal roof material shown in FIG. It is a perspective view which shows the other Example of the connection metal fitting which concerns on this invention. It is sectional drawing of the connection part of the adjacent metal roof material which uses the connection metal fitting shown in FIG. It is explanatory drawing of the connection structure of the conventional metal roof material.

  Hereinafter, the connection structure of the metal roof material which concerns on one Embodiment of this invention is demonstrated based on drawing. 1 is a cross-sectional view of a metal roofing material connection structure according to an embodiment of the present invention, and FIG. 2 is an enlarged view of both sides of the metal roofing material shown in FIG.

  As shown in FIG. 1, the metal roofing material 21 is a vertical roofing material, and half ridges 21 a and 21 b are formed on both sides along the longitudinal direction over the entire length, and a ridge 21 c is formed at the approximate center of the valley. ing. The metal roofing material 21 is formed by integrating a heat insulating material 24 between a metal upper plate (roofing material) 22 and a lower plate 23. The upper plate 22 and the lower plate 23 are roll-formed with, for example, a galvalume steel plate having excellent corrosion resistance, and the entire surface is rust-proof coated, and a predetermined color coating is applied to the surface (upper surface) of the upper plate 22. Yes. For the heat insulating material 24, for example, urethane foam or glass wool is used.

  The metal roofing material 21 has an engaging protrusion 21e at the lower part on one side and an engaging recess 21f at the lower part on the other side over the entire length along the longitudinal direction. The engagement recesses 21f and the engagement projections 21e corresponding to the adjacent metal roof materials 21 and 21 are engaged with each other so that they can be sequentially connected in the right direction in the figure. In the metal roofing material 21 located at the center of FIG. 1, the engaging projection 21 e is fixed to the main building (roof foundation) 30 by the self-drilling screw 26 via the connection fitting 25. The engagement protrusion 21e of the left metal roof material 21 is also fixed to the main building 30 in the same manner. As shown in FIG. 5 to be described later, the self-drilling screw 26 has a cutting edge 26c formed at the tip of a shaft portion 26b. The self-drilling screw 26 passes through the engaging projection 21e while being screwed into the main house 30.

  The engagement recess 21f on the left side of the metal roofing material 21 located at the center shown in FIG. 1 is engaged with and connected to the engagement protrusion 21e on the right side of the metal roofing material 21 adjacent to the left, and the engagement protrusion 21e on the right side. Is engaged with and connected to the engagement recess 21f on the left side of the right metal roofing material 21. Then, one peak 21d is formed by the half peaks 21a and 21b of the metal roofing material adjacent to the left and right, and a cap 27 is mounted on the peak 21d. In this way, the metal roofing material 21 is sequentially connected from the left side to the right side in FIG. The purlin 30 is, for example, C-shaped steel, and is fixed to a beam (not shown).

  As shown in FIG. 2, the upper plate 22 is bent substantially vertically upward at the ends of the half ridges 21a, 21b on both sides to form upper portions 22a, 22b, and the upper ends thereof are on the half ridges 21a, 21b side, respectively. The engagement portions 22c and 22d are formed by being folded back into a substantially inverted U shape.

  On the lower plate 23, an engagement protrusion 23a and an engagement recess 23b for forming an engagement protrusion 21e of the metal roof material 21 and an engagement recess 21f are formed. The engagement protrusion 23a has one side of the lower plate 23 projecting sideways along the longitudinal direction with a substantially square cross-section over the entire length, and the end 23c extends upward toward the upper part 22a of the half-mountain portion 21a. The upper end 23d is formed so as to be folded back in a substantially inverted U shape on the inner side at a position below the half mountain portion 21a. The upper surface 23e is flat and oblique, and a flange 23f is formed over the entire length along the longitudinal direction on the end 23c side. Further, the end face 23g is formed as a tapered face that is inclined inward from the upper end to the lower end.

  The height of the engaging protrusion 23a is, for example, about half of the height of the valley portion of the metal roof material 21, and is about 1/3 of the height of the half mountain portion 21a. That is, the height of the engaging protrusion 23a is formed to be about a fraction of the height of the half mountain portion 21a. Note that the height of the engaging protrusion 23 a can be set as appropriate according to the shape of the metal roof material 21.

  The engagement recess 23b is recessed so that the other side of the lower plate 23 can be engaged with the engagement protrusion 23a along the entire length in the longitudinal direction, and the end 23h extends upward toward the upper portion 22b of the half mountain portion 21b. The upper end 23i is formed by being folded back in a substantially inverted U shape on the inner side at a position below the half mountain portion 21b. In the engaging recess 23b, an end surface 23j facing the end surface 23g forming the tapered surface of the engaging protrusion 23a is formed as a tapered surface that inclines outward from the upper end to the lower end according to the tapered surface of the end surface 23g. An accommodating portion 23k for accommodating the head portion 26a of the self-drilling screw 26 is provided on the upper portion of the engaging recess 23b.

  The heat insulating material 24 is filled and integrated between the upper plate 22 and the lower plate 23. The end surface 24a on one side of the heat insulating material 24 is flush with the end portion 23c of the engaging protrusion 23a, and the upper end 23d is fixed to the end surface 24a. The end surface 24b on the other side of the heat insulating material 24 is flush with the end portion 23h of the engaging recess 23b, and the upper end 23i is fixed to the end surface 24b. Thus, the engagement protrusion 21e and the engagement recess 21f of the metal roof material 21 are formed.

  As shown in FIG. 3, the connection fitting 25 is substantially L-shaped, and has a horizontal portion 25a and a vertical portion 25b. The horizontal portion 25a is provided with a hole 25c for allowing the self-drilling screw 26 to pass through substantially in the center. The vertical portion 25b is formed with a plurality of, for example, two locking portions 25d spaced apart from each other, with the upper end bent at a substantially right angle toward the horizontal portion 25a. Both side portions of these locking portions 25d are cut out in a tapered shape. This connection fitting 25 is also formed of a galvalume steel plate and is rust-proofed on the entire surface.

  The engaging portion 25d is inserted into the end surface 24b of the heat insulating material 24 above the upper end 23i of the engaging concave portion 23b and below the upper plate 22 in the half mountain portion 21b to connect the adjacent metal roof materials 21. The locking portion 25d is easily pierced into the end surface 24b of the heat insulating material 24 by having both sides cut away in a tapered shape. Further, the upper plate 22 and the upper end 23i of the engagement recess 23b are separated from each other, and the locking portion 25d of the connection fitting 25 is separated from the upper plate 22 and the upper end 23i of the engagement recess 23b. 25 is thermally shut off completely.

  As shown in FIG. 4, the cap 27 is set to an appropriate length, and has a substantially inverted U shape with a square cross section. The lower portions of both side portions 27a and 27a of the cap 27 are constricted into L-shapes on the inner side to form locking portions 27b and 27b. The locking portions 27b and 27b can be locked to the front ends of the locking portions 22c and 22d of the upper plate 22 of the half mountain portions 21a and 21b of the adjacent metal roof materials 21 and 21, respectively. The lower end portions 27c and 27c are folded inward so as to be able to elastically contact the upper surfaces of the upper plates 22 and 22 of the half mountain portions 21a and 21b of the adjacent metal roof materials 21 and 21. The cap 27 is also roll-formed with a galvalume steel plate in the same manner as the upper plate 22, and the entire surface is coated with rust prevention, and the surface (upper surface) is colored with the same color as the upper plate 22.

  Next, the case where the said metal roof material 21 is connected is demonstrated using FIG.2 and FIG.5. As shown in FIG. 5, the metal roofing material 21 is placed on the purlin 30, the horizontal portion 25a of the connection fitting 25 is placed on the upper surface of the engaging projection 21e (23a), the vertical portion 25b is insulated from the end portion 23c and the heat insulation. The end portion 24a on one side of the material 24 is brought into contact, and the locking portion 25d is arranged outward. In this state, the vertical portion 25b is located substantially immediately above the flange 23f.

  Next, the self-drilling screw 26 is passed through the hole 25c of the horizontal portion 25a of the connection fitting 25, and the engagement protrusion 21e is screwed through and screwed into the purlin 30. In this manner, the engagement protrusion 21e of the metal roof material 21 is fixed to the main building 30. The connection fitting 25 has a function as a hanging member for fixing the metal roof material 21 to the main building 30. Since the engaging protrusion 21e is formed lower than the half mountain portion 21a, a short self-drilling screw 26 can be used. As a result, the self-drilling screw 26 can be screwed into the purlin 30 through the engaging protrusion 21e straightly. As a result, workability is improved.

  Next, the metal roofing material 21 that is newly sprinkled is placed on the right side of the metal roofing material 21, and the engagement recess 21 f (23 b) is engaged with the engagement protrusion 21 e of the left metal roofing material 21. Then, the end surface 23j forming the taper surface of the engagement recess 21f is brought into contact with the end surface 23g forming the taper surface of the opposing engagement protrusion 21e, and the head portion 26a of the self-drilling screw 26 is stored in the storage portion 23k. The locking part 25d of the connection fitting 25 is pierced (bite in) and locked (connected) to the end surface 24b on the other side of the material 24. Then, as shown in FIG. 5, the end surface 24 b on the other side of the heat insulating material 24 of the right metal roof material 21 is brought into contact with the end surface 24 a on one side of the heat insulating material 24 of the left metal roof material 21, and the left and right metal The upper plates 22 and the upper portions 22a and 22b of the roof materials 21 and 21 forming the half mountain portions 21a and 21b are brought into contact with each other.

  The end surface 23g of the engagement protrusion 21e of the left metal roofing material 21 forms a tapered surface inclined inward from the upper end toward the lower end, and the end surface 23j of the engagement recess 21f of the right metal roofing material 21 extends from the upper end. By forming a tapered surface that is inclined outward toward the lower end and abutting them, the upward lifting of the engaging recess 21f is prevented. This prevents the right metal roofing material 21 from being lifted by the negative pressure on the engagement recess 21f side.

  And as shown in FIG. 1, the one peak part 21d is formed by the half peak parts 21a and 21b of the metal roof materials 21 and 21 adjacent on both right and left sides. Further, the upper plate 22 and the upper plates 22 forming the half ridge portions 21a and 21b shown in FIG. 2 are formed into one ridge shape by the engagement portions 22c and 22d bent in a substantially U shape.

  Next, as shown in FIG. 5, the cap 27 is mounted over the entire length on the locking portions 22c and 22d having one mountain shape. Locking portions 27b and 27b constricted in a substantially L shape below both side portions 27a and 27a of the cap 27 are locked to the lower ends of the locking portions 22c and 22d, and the lower ends 27c and 27c are formed on the half-peak portions 21a and 21b. It elastically contacts the upper surfaces of the upper plates 22 and 22. Therefore, it becomes difficult for rainwater to enter from between the lower end portion 27 c of the cap 27 and the upper plate 22. Further, even when rainwater enters, it is blocked by the locking portions 22c and 22d that are folded back in an inverted U shape, thereby preventing this rainwater from entering the inside of the connection portion. This prevents rain leakage. In addition, since the self-drilling screw 26 is accommodated in the engagement recess 21f of the connection portion, the intrusion of rainwater from the self-drilling screw 26 is prevented, and rain leakage is prevented.

  Further, rainwater enters from between the locking portions 22c and 22d and the locking portions 27b and 27b of the cap 27 to reach the upper portion, and enters the connecting portion through the contact surface between the locking portions 22c and 22d. In some cases, water condensed in the cap 27 may enter the connecting portion through the contact surface between the locking portions 22c and 22d. In this case, the infiltrated rain water or condensed water flows into the ridge 23f formed on the upper surface of the engaging projection 21e, and is discharged to the outside of the metal roof material 21. Thereby, the rain leak from a connection part can be prevented.

  Further, by sticking the waterproof tape 28 on the upper surfaces of the contact portions 22c and 22d that are in contact with each other, so-called "smear leakage" that is often seen on vertical roofs and long vertical roofs in snowy countries. Can be effectively prevented. The waterproof tape 28 is not limited to the “spill leak” countermeasure, and may be used for normal construction. The waterproof tape 28 may be interposed between the locking portions 22c and 22d.

  Further, since the upper plate 22 of the metal roof material 21 and the connection fitting 25 are separated and thermally cut off, the metal roof material 21 is thermally cut off and fixed to the main building 30 and is thermally expanded by solar heat. The deformation | transformation of the metal roof material 21 resulting from this, the rain leak accompanying this, etc. can be prevented.

  FIG. 6 shows another embodiment of the connection fitting 25 shown in FIG. The connection fitting 29 is substantially L-shaped, and has a horizontal portion 29a and a vertical portion 29b. The horizontal portion 29a can be placed on the upper surface of the engaging projection 21e, and a hole 29c for allowing the self-drilling screw 26 to pass therethrough is provided at substantially the center. The vertical portion 29b has a plurality of, for example, three locking portions 29d, 29e, and 29f formed at the upper end. These locking portions 29d, 29e, and 29f are formed by dividing the upper end into three parts.

  And the latching | locking parts 29d and 29f of both sides are made into the 1st latching | locking part, and it is folded by the cross-sectional substantially reverse U-shape at one side, and the latching | locking part 22c of the upper end of the half mountain part 21a of the metal roof material 21 is carried out. It is formed so as to cover and press from the upper side (outer side). Further, the locking portion 29e at the center is a second locking portion, and is vertical along the vertical portion 29b. The locking portion 29e is bent so as to cover and hold the locking portion 22d at the upper end of the half mountain portion 21b of the adjacent metal roof material 21 from the upper side (outside). The connection fitting 29 is also formed of a galvalume steel plate, and the surface is coated with a heat insulating member (heat insulating member) such as vinyl chloride.

  FIG. 7 is an explanatory diagram of a state in which the adjacent metal roof materials 21 and 21 are connected by the connection fitting 29 shown in FIG. In FIG. 7, the same members as those in FIG. In addition, as shown in FIG. 7, the latching | locking parts 29d and 29f of the upper end part of the connection metal fitting 29 are covered with the latching | locking part 22c of the upper end of the half mountain part 21a of the metal roofing material 21 on the left side in the figure from the upper side (outside). The horizontal portion 29a is placed on the engaging protrusion 21e and fixed to the purlin 30 by the self-drilling screw 26.

  Next, a metal roof material 21 that is newly sown is arranged next to the right side of the left metal roof material 21, and the engagement recess 21 f is engaged with the engagement protrusion 21 e of the left metal roof material 21. Next, the locking portion 29e in the center of the connection fitting 29 is bent so as to press down the locking portion 22d of the right metal roofing material 21 from the upper side (outside), and the locking portion 22d is fixed. In this way, the locking portions 22c and 22d of the left and right metal roof materials 21 and 21 are connected and fixed.

  Further, in the connection fitting 29, the horizontal portion 29 a abuts on the lower plate 23 of the joint portion of the metal roof material 21, and the vertical portion 29 b and the locking portions 29 d, 29 e, 29 f lock the adjacent metal roof materials 21, 21. Although it is in contact with the portions 22c and 22d, the metal roofing material 21 and the main building 30 are thermally insulated because the surface is coated with a heat insulating member (heat insulating member). In this manner, adjacent metal roof materials 21 are sequentially connected and fixed to the purlin 30. Note that the waterproof tape 28 may be attached to the upper surfaces of the engaging portions 29d to 29f of the connection fitting 29 in the same manner as described above.

DESCRIPTION OF SYMBOLS 1a, 1b Mountain part 2 Valley part 3 Metal roof material 4 Heat insulating material 5 Self-drilling screw 6 Packing 7 Washer 9 Axis 10 Cutting edge 11 Screw head 12 Cap holder A Roof base P Folding roof panel 21 Metal roof material 21a, 21b Half mountain Part 21c, 21d Mountain part 21e Engaging protrusion 21f Engaging recess 22 Upper plate 22a, 22b Upper part 22c, 22d Locking part 23 Lower plate 23a Engaging protrusion 23b Engaging recess 23c End part 23d Upper end 23e Upper surface 23f 上面 23g End surface (tapered surface)
23h End portion 23i Upper end 23j End surface (tapered surface)
23k housing part 24 heat insulating material 24a, 24b end face 25 connection fitting 25a horizontal part 25b vertical part 25c hole 25d locking part 26 self-drilling screw 26a head part 26b shaft part 26c cutting blade 27 cap 27a side part 27b locking part 27c lower end part 28 waterproof tape 29 connecting bracket 29a horizontal portion 29b vertical portion 29c hole 29d, 29f first locking portion 29e second locking portion 30 purlin

Claims (4)

A metal roofing material is formed by integrating a heat insulating material between a metal upper plate and a metal lower plate, which are half-crested along the longitudinal direction on both sides. A metal roofing material connecting structure in which a half mountain part of an adjacent metal roofing material is brought into contact with and fixed to the main building, and a cap is attached to the abutting half mountain part,
The metal roofing material is formed with an engaging protrusion over the entire length along the longitudinal direction at the lower part on one side, and can be engaged with the engaging protrusion over the entire length along the longitudinal direction at the lower part on the other side. An engaging recess is formed,
The upper half of the upper plate is formed with a locking portion in which the upper portion of the half peak extends upward and the upper end is folded back toward the half peak.
The engaging protrusion is formed such that one side of the lower plate protrudes laterally with a substantially square cross-section over the entire length along the longitudinal direction, and an end portion extends toward the half-mountain portion and is one side of the heat insulating material. Formed fixed to the end face,
The engaging recess is recessed so that the other side of the lower plate can be engaged with the engaging protrusion along the entire length along the longitudinal direction, and an end portion extends toward the half-mountain and the other side of the heat insulating material. Formed fixed to the end face,
The connection fitting is substantially L-shaped, and is placed on the engagement protrusion and is fixed to the purlin together with the self-drilling screw, and is in contact with the end surface of the heat insulating material and is upward. A vertical portion provided with a locking portion for locking the heat insulating material of the metal roof material adjacent to the upper end of the extension is formed,
The cap has a substantially inverted U-shape, and is mounted over the entire length of the locking portion of the half-mountain that abuts along the longitudinal direction of the adjacent metal roofing material, and the half-peaking portion is locked at the lower part of both sides. A connection structure for a metal roofing material, wherein a locking portion that is locked to a lower end of the portion is formed.   The engaging protrusion is formed in a tapered surface whose upper surface is flat and the end surface is inclined inward from the upper end to the lower end, and the engaging recess has an end surface facing the tapered surface of the engaging protrusion. 2. The metal roof according to claim 1, wherein the metal roof is formed on a tapered surface that is inclined outward from the upper end to the lower end, and is provided with an accommodating portion that accommodates a head portion of the self-drilling screw at an upper portion. Material connection structure.   3. The metal roof according to claim 1, wherein the engagement protrusion is formed with a ridge over the entire length along the longitudinal direction on one end face side of the heat insulating material on the upper surface. Material connection structure. The connection fitting is substantially L-shaped, and is placed between a horizontal portion that is placed on the engagement protrusion and is fastened to the purlin together with the self-drilling screw, and a half-mountain portion of the adjacent metal roofing material. A first locking portion that extends upward through the upper end and locks the locking portion of one half-mountain portion from above, and a second locking portion that locks the locking portion of the other half-mountain portion from above. The metal roofing material connection structure according to claim 1, wherein a vertical portion provided with a metal is formed.

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