JP2004339822A - Fastening structure of metal roofing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening structure of a metal roofing capable of surely preventing the incursion of rain water into a screw stop section with a cap by covering the cap around the screw head in a state to prevent it from coming out after mountain sections of the neighboring metal roofing materials are fastened to each other with a self-drilling screw. <P>SOLUTION: The ridge sections 1a and 1b on both ends of the neighboring metal roofing materials 3 and 3 are vertically piled up, and both ridge sections 1a and 1b are fastened to each other with the self-drilling screw 5 screwing from above through a packing 6 and a washer 7. A cap receiver 12 is fixed with the washer 7. The cap 13 is covered on the outer circumference of the screw head 11 of the self-drilling screw 5 from above, and the cap 13 is provided to the cap receiver 12 in a locked fashion. A waterproofing packing 23 is made to intervene between the lower end circumferential edge of the cap 13 and a flat surface part of the ridge section 1a of one metal roofing material 3 located on the upper side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fastening structure for a metal roofing material in which ridges at both ends of adjacent metal roofing materials are vertically stacked, and the ridges are fastened with self-drilling screws screwed from above through packings and washers. .
[0002]
[Prior art]
In this type of roof structure, if the screw head and the washer of the self-drilling screw are left exposed on the metal roofing material, the screw head and the washer are rusted and the durability is inferior, not only in appearance but also in appearance.
[0003]
In order to solve this basic proposition, Patent Literature 1 discloses that a bowl-shaped cap that individually covers the outer periphery of each screw head, including a washer, is covered from above.
[0004]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 52-91615 (pages 5 to 6 of the specification, FIG. 3)
[0005]
The problem is how to fix the cap on the metal roofing. In this regard, in Patent Document 1, an annular flange is formed to protrude on the outer periphery of the lower end of the cap, and an adhesive layer is applied and formed on the lower surface of the annular flange. The annular flange of the cap is fixed on the surface via the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer was protected with release paper, and the release paper was peeled off when the cap was attached.
[0006]
However, in the conventional type in which the cap is attached with the pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer itself is deteriorated with time, and the cap is likely to come off over time. If self-drilling screws are tightened too much, the metal roofing material may be dented and deformed by the washer, and the mountain is not necessarily secured on a flat surface. Unable to carry up to.
[0007]
For this reason, the screw head and the washer are rusted by rainwater, which is likely to eventually lead to water leakage from the screw stopper. In order to prevent this, conventionally, self-drilling screws and washers have to be made of stainless steel to increase durability, resulting in high material cost.
[0008]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a cap for individually covering a screw head of a self-drilling screw so as to be easily and securely fastened in association with a washer. An object of the present invention is to surely prevent rainwater from entering the screw stopper with the attached cap.
[0009]
[Means for Solving the Problems]
According to the present invention, as shown in FIG. 2, self-drilling screws 5 screwed from above from the tops 1a and 1b of both ends of the metal roofing materials 3 and 3 are piled up and down. In the fastening structure of the metal roofing material fastened through the packing 6 and the washer 7, as shown in FIG. 1, a cap 13 which is put on from above is individually provided to individually cover the outer periphery of the screw head 11 of the self-drilling screw 5. And a cap 13 is fixed to the washer 7 upwardly via the cap receiver 12 in a retaining shape. At this time, the lower peripheral edge of the cap 13 can be seated via the waterproof packing 23 on the flat surface of the ridge 1a of the one metal roofing material 3 located on the upper side. The cap receiver 12 here may be a member separate from the washer 7, or may be formed integrally with the washer 7.
[0010]
More specifically, as shown in FIGS. 1 and 3, the fastening structure of the metal roofing material according to the present invention includes a metal roofing material 3 having peaks 1a and 1b and a valley 2 and an adjacent metal roofing material. A self-drilling screw 5 and a self-drilling screw that are screwed in from the upper outside of both ridges 1a and 1b in order to fasten the flat surfaces of the ridges 1a and 1b at both ends of the material 3 in a state of being vertically stacked. 5 is inserted into the shaft 9 from the cutting edge 10 side thereof, between the flat surface portion of the ridge 1a of the one metal roofing material 3 located above and the screw head 11 of the self-drilling screw 5. It has an interposed packing 6 and a washer 7, and a lower wall 15 sandwiched between a flat surface portion of a peak 1 a of one of the metal roofing materials 3 and an outer peripheral edge 7 a of the washer 7. An upright wall 16 is formed at the upper end of the upright wall 16. A cap receiver 12 having an outward locking portion 19, and a cap 13 which is put on from above to individually cover the outer periphery of each screw head 11 including the washer 7 and the cap receiver 12 are provided. ing. In addition, the cap 13 is provided on the lower end side of the inner surface of the cap body 20, the cap body 20 formed in a dome shape having an open lower surface, the annular flange 21 formed on the outer periphery of the lower end of the cap body 20, and the cap 13. The stopper portion 22 of the cap receiver 12 has a stopper portion 22 that engages upward in a retaining shape.
[0011]
As shown in FIG. 4, the cap receiver 12 includes an annular lower wall 15, a cylindrical upright wall 16 connected to the outer periphery of the lower wall 15, and a locking portion 19 that protrudes outward from the upper edge of the upright wall 16. Including. As shown in FIG. 1, a waterproof packing 23 can be interposed between the flat surface portion of the crest 1 a of the one metal roofing material 3 and the annular flange 21 of the cap 13.
[0012]
The present invention also includes a form in which the washer 7 and the cap receiver 12 are integrally formed as shown in FIGS. In this case, the cap receiver 12 is formed integrally with the metal washer 7, and has an upright wall 16 formed upright on the outer periphery of the center-convex washer 7, and an outward engaging member provided at the upper end of the upright wall 16. A stop portion 19 is provided, and the stop portion 22 of the cap 13 is engaged with the lock portion 19 in a manner preventing the cap 13 from coming off. The cap receiver 12 in this case can be configured to include a cylindrical upright wall 16 connected to the circular outer peripheral edge of the washer 7, and a locking portion 19 bent outward from the upper peripheral edge of the upright wall 16.
[0013]
As shown in FIG. 8, the cap receiver 12 includes an annular lower wall 15 that extends horizontally to the circular outer peripheral edge portion 7 a of the central convex washer 7, a standing wall 16 that rises from the lower wall 15, and an upper end of the standing wall 16. And the waterproof packing 23 is interposed between the lower wall 15 of the cap receiver 12 and the flat surface portion of the mountain portion 1a of one of the metal roofing materials 3. You can also.
[0014]
Effects of the Invention
According to the present invention, when screwing the ridges 1a and 1b of the adjacent metal roofing materials 3 with the self-drilling screws 5 via the packing 6 and the washer 7, the cap receiver 12 is associated with the washer 7. The cap 13 is fixed, and the cap 13 is placed on the cap receiver 12 from above to hold the cap 13 in a retaining shape. Therefore, the work of covering and stopping the cap 13 can be performed easily and firmly.
[0015]
In a state where the cap 13 is covered, if the lower peripheral edge of the cap 13 is seated on the flat surface portion of the ridge portion 1a of the one metal roofing material 3 located on the upper side via the waterproof packing 23, the waterproof packing 23 Thus, it is possible to reliably prevent rainwater from entering the inside of the cap 13, that is, into the screw fastening portion, and it is possible to properly take measures against water leakage. This means that the screw head 11 and the washer 7 do not need to be formed of a rustproof stainless material, and the roof can be roofed at a low cost in terms of material costs.
[0016]
When the washer 7 and the cap receiver 12 are integrally formed, the number of members is reduced by that much, so that it can be manufactured at low cost and the roof can be constructed easily. At this time, the cap receiver 12 includes an annular lower wall 15 that is connected to the circular outer peripheral edge 7a of the central convex washer 7 horizontally, and the lower wall 15 and a flat surface portion of the peak 1a of the metal roofing material 3 are provided. When the self-drilling screw 5 is fastened, the waterproof packing 23 is interposed in a compressed state via the washer 7 when the self-drilling screw 5 is interposed therebetween. It is possible to ensure certainty.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
In FIG. 2, the roof in the illustrated example is of a type in which a folded roof panel P is overlapped on a roof base (main building) A in the left-right direction. The folded roof panel P is provided with a metal roofing material 3 made of painted steel plate located outside with peak portions 1a and 1b and a valley portion 2 and a heat insulating material 4 integrated with the metal roofing material. I have. In the folded roof panel P, the flat surfaces of the ridges 1a and 1b at the left and right ends of the adjacent metal roofing material 3 overlap each other vertically, and the flat surfaces of the corresponding ridges 1a and 1b It is fastened with a self-drilling screw 5 to be screwed in via a washer 7 and a packing 6 of a convex shape.
[0018]
The self-drilling screw 5 has a cutting edge 10 at the end of a long shaft 9, and from the side of the cutting edge 10, the flat surface portions of both ridges 1 a and 1 b of the metal roofing material 3, the heat insulating material 4, and An elastic packing 6 and a metal washer are screwed between the flat surface portion of the ridge portion 1a of one of the metal roofing materials 3 screwed into the roof foundation A and located above and the screw head 11 of the self-drilling screw 5. 7 intervenes. That is, in the fastening state in which the self-drilling screw 5 is screwed in, the screw head 11 compresses the packing 6 via the washer 7, and the packing 6 prevents rainwater from entering the inside through the screw holes formed in the peaks 1 a and 1 b. I'm blocking.
[0019]
(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of the present invention, including a cap receiver 12 separate from the washer 7 and a washer 7 and a cap receiver 12 for each screw head 11. And a cap 13 for individually covering the outer periphery thereof.
[0020]
The cap receiver 12 is a molded plastic product, and is formed in a deep dish shape having an annular lower wall 15 and a cylindrical upright wall 16 that is provided continuously from the outer periphery of the lower wall 15. At the center of the lower wall 15, there is a circular hole 17 into which the packing 6 fits, and a locking portion 19 having a downward locking surface is formed on the upper peripheral edge of the standing wall 16 outward and downward.
[0021]
The cap 13 is a plastic molded product having a cap main body 20 formed in a circular dome shape with a lower surface opening, and a circular annular flange 21 formed to protrude around the lower end of the cap main body 20. On the lower end side of the inner surface of the cap body 20, a stopper 22 having an upward locking surface is formed to project inward at a quadrant position.
[0022]
In FIG. 3, a self-drilling screw 5 is fitted with a washer 7, a cap receiver 12 and a packing 6 in this order from the cutting edge 10 side of the shaft 9 on the shaft 9 thereof, and the screw 5 is screwed in the above-described manner. . In this fastening state, the lower wall 15 of the cap receiver 12 is sandwiched between the flat surface portion of the peak 1 a of the metal roofing material 3 and the outer peripheral edge 7 a of the washer 7.
[0023]
Next, at each fastening point of the self-drilling screw 5, a ring-shaped waterproof packing 23 and a cap 13 are placed from above and outside the screw head 11 from above. At this time, the waterproof packing 23 can be temporarily fixed in advance to the lower surface of the annular flange 21 of the cap 13 with an adhesive. When the cap 13 is pushed downward, the stopper 22 of the cap 13 rides over the locking portion 19 of the cap receiver 12, and the upward locking surface of the locking portion 22 is disengaged upward with the downward locking surface of the locking portion 19. Engage with a stop. For this engagement, partial elastic deformation of both or at least one of the cap 13 and the cap receiver 12 is used, and the elastic restoring force ensures that the engagement state is securely retained.
[0024]
In the state where the cap 13 is put on and fastened to the cap receiver 12 in the above-described manner, elasticity is provided between the flat surface portion of the crest 1 a of the one metal roofing material 3 and the annular flange 21 of the cap 13. The waterproof packing 23 is interposed under compression, and the waterproof packing 23 prevents rainwater from entering the screw fastening portion in the cap 13 from the outside.
[0025]
(Another Embodiment of Embodiment 1) FIGS. 5A, 5B, and 5C show another embodiment of the shape of the cap 13 of the first embodiment. That is, the cap body 20 in FIG. 5A has a conical cross section, the cap body 20 in FIG. 5B has a trapezoidal (truncated cone) shape, and the cap body 20 in FIG. Each is formed in a shape having a peripheral side wall and a flat circular upper wall. Thus, the shape of the cap 13 can be arbitrarily selected.
[0026]
Second Embodiment FIGS. 6 and 7 show a second embodiment of the present invention, which is different from the first embodiment in that the cap receiver 12 is formed integrally with the metal washer 7.
[0027]
The cap receiver 12 according to the second embodiment includes an upright wall 16 that is bent upward from a flat circular outer peripheral edge portion 7a of a washer 7 formed in a convex shape, and an outwardly bent upper end peripheral edge of the upright wall 16. Locking portion 19. The standing wall 16 here is bent and formed as a piece at four places as shown in FIG. 7, and the stopper 22 on the cap 13 side is formed in a circular shape. Other configurations are substantially the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted.
[0028]
Third Embodiment FIG. 8 shows a third embodiment of the present invention in which the second embodiment is further modified. In this case, the cap receiver 12 includes an annular lower wall 15 that is horizontally connected to a circular outer peripheral edge 7a of the washer 7 whose center is formed in a convex shape, and a cylindrical standing wall 16 that rises from the lower wall 15. And an engaging portion 19 which is bent outward from the peripheral edge of the upper end of the standing wall 16 toward the outside. Thus, the ring-shaped waterproof packing 23 is attached to the lower surface of the lower wall 15.
[0029]
According to the third embodiment, when the ridges 1a and 1b of the adjacent metal roofing material 3 are fastened with the self-drilling screw 5 via the packing 6 and the washer 7, the flatness of the ridge 1a of the one metal roofing material 3 is improved. A waterproof packing 23 is interposed between the surface portion and the lower wall 15 of the cap receiver 12 under compression, and the waterproof packing 23 prevents rainwater from entering a screw fastening portion. When the cap 13 is put on, the annular flange 21 at the lower end thereof is received on the upper surface of the lower wall 15. Whether or not a further waterproof packing is interposed between the annular flange 21 and the lower wall 15 is optional. Other configurations are substantially the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted.
[0030]
To integrate the cap receiver 12 with the washer 7 in the third embodiment, the inner peripheral edge of the lower wall 15 of the cap receiver 12 is welded to the circular outer peripheral edge 7a of the washer 7. Alternatively, the lower wall 15 is integrally formed with the circular outer peripheral edge 7 a of the washer 7 so as to extend therefrom, and the lower end of the standing wall 16 is welded onto the lower wall 15. Alternatively, it is conceivable that the lower wall 15 is formed integrally with the circular outer peripheral edge portion 7a of the washer 7 so as to be integrally extended, folded back on the lower wall 15, and the upright wall 16 is further bent upward.
[0031]
The metal roofing material 3 targeted by the present invention may not be the folded roof panel P as in the illustrated example. The cap 13 may be formed of a stainless material. For example, in the first embodiment, the locking portion 19 may be cut and raised, or may be formed so as to bulge outward. Further, in the first embodiment, the cap receiver 12 may be formed such that the lower wall 15 is formed in a rectangular shape having the hole 17, and the upright walls 16 are raised from both ends of the lower wall 15.
[Brief description of the drawings]
FIG. 1 is a vertical sectional front view of a main part of Embodiment 1. FIG. 2 is a schematic vertical sectional front view of Embodiment 1. FIG. 3 is a vertical sectional front view showing components of Embodiment 1 in an exploded state. 5 is an exploded perspective view showing the constituent members of FIG. 5. FIGS. 5 (a), 5 (b) and 5 (c) are longitudinal sectional front views showing different embodiments of the first embodiment. FIGS. FIG. 7 is a perspective view showing the components of the second embodiment in an exploded state. FIG. 8 is a vertical front view of a third embodiment.
1a, 1b Crest of metal roofing material 2 Valley of metal roofing material 3 Metal roofing material 5 Self-drilling screw 6 Packing 7 Washer 7a Peripheral edge of washer 11 Self-drilling screw screw head 12 Cap receiver 13 Cap 15 Cap receiver Bottom wall 16 Standing wall of cap receiver 19 Locking part 20 of cap receiver 20 Cap body 21 Ring flange 22 of cap Stop part 23 of cap Waterproof packing

Claims (8)

The ridges 1a and 1b at both ends of the adjacent metal roofing material 3 are overlapped with each other vertically, and the corresponding ridges 1a and 1b are fastened with a self-drilling screw 5 screwed from above through the packing 6 and the washer 7. Metal roofing material fastening structure
In order to individually cover the outer periphery of the screw head 11 of the self-drilling screw 5, a cap 13 is provided which is put on from above,
A fastening structure for a metal roofing material, wherein a cap (13) is fixed to the washer (7) upward through a cap receiver (12) in a retaining shape. The fastening structure for a metal roofing material according to claim 1, wherein a lower end periphery of the cap (13) is seated via a waterproof packing (23) on a flat surface portion of a mountain portion (1a) of the one metal roofing material (3) located on an upper side. A metal roofing material 3 having peaks 1a and 1b and a valley 2;
A self-drilling screw 5 screwed from above the outer sides of both ridges 1a and 1b in order to fasten the flat surfaces of the ridges 1a and 1b at both ends of the adjacent metal roofing material 3 in a state of being vertically overlapped; ,
The tip of the self-drilling screw 5 is inserted into the shaft 9 from the side of the cutting edge 10, and the flat surface portion of the crest 1 a of the one metal roofing material 3 located above and the screw head 11 of the self-drilling screw 5 Packing 6 and washer 7 interposed between
One of the metal roofing materials 3 has a lower wall 15 sandwiched between a flat surface portion of a mountain portion 1a and an outer peripheral edge 7a of a washer 7, and a standing wall 16 is formed upright on the outer periphery of the lower wall 15, A cap receiver 12 having an outward locking portion 19 at the upper end of the standing wall 16;
In order to individually cover the outer periphery of each of the screw heads 11 including the washer 7 and the cap receiver 12, a cap 13 is provided which is attached from above,
The cap 13 includes a cap body 20 formed in a dome shape having an open lower surface, an annular flange 21 formed to protrude around the lower end of the cap body 20, and the cap receiving member provided on the lower end side of the inner surface of the cap body 20. A fastening structure for a metal roofing material having a stopper portion 22 that engages with the locking portion 19 of the 12 upwardly in a retaining shape. The cap receiver (12) according to claim 3, wherein the cap receiver (12) includes an annular lower wall (15), a cylindrical upright wall (16) connected to an outer periphery of the lower wall (15), and a locking portion (19) projecting outward from an upper edge of the upright wall (16). Metal roof material fastening structure. The fastening structure for a metal roofing material according to claim 3 or 4, wherein a waterproof packing (23) is interposed between the flat surface portion of the mountain portion (1a) of the one metal roofing material (3) and the annular flange (21) of the cap (13). A metal roofing material 3 having peaks 1a and 1b and a valley 2;
A self-drilling screw 5 screwed from above the outer sides of both ridges 1a and 1b in order to fasten the flat surfaces of the ridges 1a and 1b at both ends of the adjacent metal roofing material 3 in a state of being vertically overlapped; ,
The tip of the self-drilling screw 5 is inserted into the shaft 9 from the side of the cutting edge 10, and the flat surface portion of the crest 1 a of the one metal roofing material 3 located above and the screw head 11 of the self-drilling screw 5 A packing 6 and a metal washer 7 interposed between
A metal cap receiver integrally formed with the washer 7 and having a standing wall 16 formed upright on the outer periphery of the center convex washer 7 and an outwardly engaging portion 19 provided at an upper end of the standing wall 16. 12 and
In order to individually cover the outer periphery of each of the screw heads 11 including the washer 7 and the cap receiver 12, a cap 13 is provided which is attached from above,
The cap 13 includes a cap body 20 formed in a dome shape having an open lower surface, an annular flange 21 formed to protrude around the lower end of the cap body 20, and the cap receiving member provided on the lower end side of the inner surface of the cap body 20. A fastening structure for a metal roofing material having a stopper portion 22 that engages with the locking portion 19 of the 12 upwardly in a retaining shape. The fastening of a metal roofing material according to claim 6, wherein the cap receiver (12) includes a cylindrical upright wall (16) connected to a circular outer peripheral edge of the washer (7), and a locking portion (19) bent outward from an upper peripheral edge of the upright wall (16). Construction. An annular lower wall 15 in which the cap receiver 12 is horizontally connected to the circular outer peripheral edge 7 a of the central convex washer 7, an upright wall 16 rising from the lower wall 15, and an engaging portion provided at an upper end of the upright wall 16. 19 and
The fastening structure for a metal roofing material according to claim 6, wherein a waterproof packing (23) is interposed between the lower wall (15) of the cap receiver (12) and the flat surface portion of the ridge (1a) of the one metal roofing material (3).

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