JP3718507B2 - Fastening structure for metal roofing materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fastening structure for a metal roof material, in which crests at both ends of adjacent metal roof materials are stacked one above the other and the corresponding crests are fastened with a self-drilling screw screwed from above via packing and a washer. .
[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 roof material, the screw head and the washer are rusted and inferior in durability as well as appearance.
[0003]
In order to solve this basic proposition, Patent Document 1 discloses that a cap-like cap that covers the outer periphery of each screw head, including a washer, is covered from above.
[0004]
[Patent Document 1]
Japanese Utility Model Publication 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 material. In this regard, in Patent Document 1, an annular ridge is formed 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 ridge, so that the flat portion of one metal roofing material located on the upper side is flat. On the surface, the annular collar of the cap is fixed via the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer is protected with release paper, and the release paper is peeled off when the cap is 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 with use over time. If the self-drilling screw is tightened too much, the metal roofing material may be dented and deformed by the washer, and the peak is not necessarily secured on a flat surface. It cannot be fully loaded.
[0007]
For this reason, the screw head and the washer are rusted by rainwater, and are likely to eventually lead to water leakage from the screw stopper. In order to prevent this, conventionally, the self-drilling screw and the washer are made of stainless steel to increase the durability, which has led to high material costs.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily and securely fasten a cap that individually covers the screw head of a self-drilling screw in association with a previous washer. An object of the present invention is to reliably prevent rainwater from entering the screw stopper with the attached cap.
[0009]
[Means for Solving the Problems]
In the present invention, as shown in FIG. 2, the crests 1a and 1b at both ends of the adjacent metal roof materials 3 and 3 are stacked one above the other, and the corresponding crests 1a and 1b are screwed from above. In the metal roof material fastening structure that is fastened via the packing 6 and the washer 7, a cap 13 that is applied from above is provided to individually cover the outer periphery of the screw head 11 of the self-drilling screw 5 as shown in FIG. The cap 13 is characterized in that the cap 13 is fixed to the washer 7 through the cap receiver 12 in a retaining manner upward. At that time, the lower end periphery of the cap 13 can be seated via the waterproof packing 23 on the flat surface portion of the peak portion 1a of the one metal roofing material 3 located on the upper side. The cap receiver 12 may be a separate member 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 roof material according to the present invention includes a metal roof material 3 having peak portions 1a and 1b and a valley portion 2, and an adjacent metal roof. A self-drilling screw 5 screwed from the upper outside of both mountain parts 1a and 1b, and a self-drilling screw, in order to fasten the flat surface portions of the mountain parts 1a and 1b at both ends of the materials 3 and 3 5 between the flat surface portion of the peak portion 1a of the metal roofing material 3 located on the upper side and the screw head 11 of the self-drilling screw 5. The lower wall 15 is sandwiched between the packing 6 and the washer 7 interposed, the flat surface portion of the peak portion 1 a of the metal roof material 3, and the outer peripheral edge portion 7 a of the washer 7. An upright wall 16 is formed on the upper end of the upright wall 16. A cap receiver 12 having an outward locking portion 19, and a cap 13 that is covered from above to individually cover the outer periphery of each screw head 11 including the washer 7 and the cap receiver 12. ing. In addition, the cap 13 is provided on the lower end side of the inner surface of the cap main body 20, the cap main body 20 formed in a dome shape whose lower surface is open, the annular flange 21 formed to protrude on the outer periphery of the lower end of the cap main body 20, and The cap receiving portion 19 of the cap receiver 12 has a stopper portion 22 that engages upward in a retaining manner.
[0011]
As shown in FIG. 4, the cap receiver 12 includes an annular lower wall 15, a cylindrical standing wall 16 connected to the outer periphery of the lower wall 15, and a locking portion 19 that protrudes outward from the peripheral edge of the upper end of the standing wall 16. Including. And between the flat surface part of the peak part 1a of one metal roof material 3, and the annular collar 21 of the cap 13, the waterproof packing 23 can be interposed as shown in FIG.
[0012]
Further, the present invention 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 stands upright on the outer periphery of the middle convex washer 7, and an outward engagement provided at the upper end of the upright wall 16. The locking portion 19 is engaged with the locking portion 19 so that the locking portion 22 of the cap 13 is prevented from coming off upward. The cap receiver 12 there can be configured to include a cylindrical standing wall 16 connected to the circular outer peripheral edge of the washer 7 and a locking portion 19 that is bent outward from the upper end peripheral edge of the standing wall 16.
[0013]
Further, as shown in FIG. 8, the cap receiver 12 includes an annular lower wall 15 connected horizontally to the circular outer peripheral edge portion 7 a of the middle convex washer 7, a standing wall 16 rising from the lower wall 15, and an upper end of the standing wall 16. The waterproof packing 23 is interposed between the lower wall 15 of the cap receiver 12 and the flat surface portion of the peak portion 1a of the one metal roof material 3. You can also.
[0014]
[Effects of the invention]
According to the present invention, when the crests 1a and 1b of the adjacent metal roofing materials 3 and 3 are screwed together with the self-drilling screw 5 via the packing 6 and the washer 7, the cap receiver 12 is associated with the washer 7. The cap 13 is designed to cover the cap receiver 12 from above and hold it in a retaining shape. Therefore, the operation of covering and stopping the cap 13 can be easily and firmly performed.
[0015]
In the state where the cap 13 is put on, if the lower end periphery of the cap 13 is seated via the waterproof packing 23 on the flat surface portion of the mountain portion 1a of the one metal roofing material 3 located on the upper side, the waterproof packing 23 Thus, it is possible to reliably prevent rainwater from entering the inside of the cap 13, that is, the screw fastening portion, and to take a good countermeasure against water leakage. This means that the screw head 11 and the washer 7 need not be formed of a rust-proof stainless material, and the roof can be made inexpensively in terms of material cost.
[0016]
If the washer 7 and the cap receiver 12 are integrally formed, the number of members is reduced by that amount, so that it can be manufactured at a low cost and the roof can be constructed well. At that time, the cap receiver 12 includes an annular lower wall 15 connected horizontally to the circular outer peripheral edge portion 7 a of the middle convex washer 7, and the lower wall 15 and the flat surface portion of the peak portion 1 a of the metal roof material 3. If the waterproof packing 23 is interposed between them, the waterproof packing 23 is interposed in a compressed state via the washer 7 when the self-drilling screw 5 is fastened. Certainty can be expected.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 2, the roof in the illustrated example has a form in which a folded roof panel P is overlapped on the roof base (main building) A in the left-right direction. The origami roof panel P includes a metal roofing material 3 made of a coated steel plate that has a peak portion 1a, 1b and a trough portion 2 and is located outside, and a heat insulating material 4 is integrated therein. Yes. The folded roof panel P is formed by stacking the flat surfaces of the peak portions 1a and 1b at the left and right ends of the adjacent metal roof materials 3 and 3 up and down, and the flat surfaces of the corresponding peak portions 1a and 1b from above and outside. The self-drilling screw 5 to be screwed in is fastened via the intermediate convex washer 7 and the packing 6.
[0018]
The self-drilling screw 5 has a cutting edge 10 at the tip of a long shaft 9, and the flat surface portions of both mountain parts 1a and 1b of the metal roofing materials 3 and 3 from the side of the cutting edge 10, the heat insulating material 4, and then An elastic packing 6 and a metal washer between the flat surface portion of the peak portion 1a of the one metal roofing material 3 that is screwed into the roof base A 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 through the washer 7, and the rain 6 enters the inside from the screw holes opened in the peaks 1 a and 1 b with the packing 6. It is blocking.
[0019]
(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of the present invention, and include 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 these outer peripheries.
[0020]
The cap receiver 12 is a plastic molded product, and is formed in a deep dish shape having an annular lower wall 15 and a cylindrical standing wall 16 that is continuously provided from the outer periphery of the lower wall 15. The lower wall 15 has a circular punching hole 17 into which the packing 6 is fitted, and a locking portion 19 having a downward locking surface on the upper peripheral edge of the standing wall 16 is formed facing outward and downward.
[0021]
The cap 13 is a plastic molded product having a cap main body 20 formed in a circular dome shape (opened) whose bottom surface is open, and a circular annular ridge 21 formed to protrude from the outer periphery of 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 portion 22 having an upward locking surface is projected inward at the quadrant position.
[0022]
In FIG. 3, the self-drilling screw 5 is inserted into the shaft 9 with a washer 7, a cap receiver 12 and a packing 6 in this order from the cutting edge 10 side, and then screwed in the manner described above. . In this fastened state, the lower wall 15 of the cap receiver 12 is sandwiched between the flat surface portion of the peak portion 1 a of the metal roof material 3 and the outer peripheral edge portion 7 a of the washer 7.
[0023]
Next, at each fastening point of the self-drilling screw 5, the cap 13 is attached from above the ring-shaped waterproof packing 23 from the upper outside of the screw head 11. At that time, the waterproof packing 23 can be temporarily fixed to the lower surface of the annular flange 21 of the cap 13 with an adhesive in advance. When the cap 13 is pushed downward, the stopping portion 22 of the cap 13 gets over the engaging portion 19 of the cap receiver 12, and the upward locking surface of the stopping portion 22 is pulled upward to 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 utilized, and the engagement state is maintained securely and in a retaining shape by its elastic restoring force.
[0024]
In a state where the cap 13 is put on and fixed to the cap receiver 12 in the manner described above, elasticity is provided between the flat surface portion of the peak portion 1a of one metal roof 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 Example of Example 1) FIGS. 5A, 5 </ b> B, and 5 </ b> C show another embodiment example regarding the shape of the cap 13 of Example 1. FIG. That is, the cap body 20 in FIG. 5A has a conical cross section, the cap body 20 in FIG. 5B has a trapezoidal shape (a frustoconical 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]
(Embodiment 2) FIGS. 6 and 7 show Embodiment 2 of the present invention, which is different from Embodiment 1 in that a cap receiver 12 is formed integrally with a metal washer 7.
[0027]
The cap receiver 12 according to the second embodiment has a standing wall 16 bent upward from a flat circular outer peripheral edge portion 7a of a washer 7 formed in a middle convex shape, and is bent outward from an upper end peripheral edge of the standing wall 16 outwardly. And the locking portion 19. The standing wall 16 here is bent and formed as a piece at four locations 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 is omitted.
[0028]
(Example 3) FIG. 8 shows Example 3 of the present invention in which Example 2 is further modified. The cap receiver 12 in this case includes an annular lower wall 15 connected horizontally to the circular outer peripheral edge portion 7a of the washer 7 whose center is formed in a middle convex shape, and a cylindrical standing wall 16 rising from the lower wall 15. , And a locking portion 19 bent continuously from the peripheral edge of the upper end of the standing wall 16 toward the lower 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 crests 1a and 1b of the adjacent metal roofing material 3 are fastened with the self-drilling screw 5 through the packing 6 and the washer 7, the flatness of the crest 1a of one metal roofing material 3 is flat. 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 the screw fastening portion. When the cap 13 is put on, the annular flange 21 at the lower end of the cap 13 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 arbitrary. Since other configurations are substantially the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.
[0030]
In the third embodiment, for integrating the cap receiver 12 with the washer 7, the inner peripheral edge of the lower wall 15 of the cap receiver 12 is welded to the circular outer peripheral edge portion 7 a of the washer 7. Alternatively, the lower wall 15 is integrally formed on the circular outer peripheral edge portion 7 a of the washer 7, and the lower end of the standing wall 16 is welded onto the lower wall 15. Alternatively, the lower wall 15 may be integrally extended on the circular outer peripheral edge portion 7a of the washer 7, folded back on the lower wall 15, and further the standing wall 16 bent upward.
[0031]
The metal roofing material 3 targeted by the present invention does not have to 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. In the first embodiment, the cap receiver 12 may be formed in a rectangular shape in which the lower wall 15 has the punched hole 17, and the standing wall 16 may be raised from both ends of the lower wall 15.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of essential parts of Example 1. FIG. 2 is a schematic longitudinal front view of Example 1. FIG. 3 is a longitudinal front view showing components of Example 1 in an exploded state. 5 is a perspective view showing the components of FIG. 1 in an exploded state. FIGS. 5 (a), 5 (b), and 5 (c) are longitudinal front views showing different embodiments of the first embodiment. FIG. FIG. 7 is a perspective view showing the components of the second embodiment in an exploded state. FIG. 8 is a front view of the vertical section of the third embodiment.
DESCRIPTION OF SYMBOLS 1a, 1b Metal roofing material peak 2 Metal roofing material valley 3 Metal roofing material 5 Self-drilling screw 6 Packing 7 Washer 7a Washer outer peripheral edge 11 Self-drilling screw screw head 12 Cap receiver 13 Cap 15 Cap receiver Lower wall 16 Cap holder standing wall 19 Cap receiver locking portion 20 Cap body 21 Cap annular collar 22 Cap stopper 23 Waterproof packing

Claims (6)

A metal roofing material (3) having peaks (1a, 1b) and valleys (2);
Screwed from the upper outside of both mountain parts (1a, 1b) in order to fasten the flat surfaces of the mountain parts (1a, 1b) at both ends of the adjacent metal roofing material (3, 3) vertically Self-drilling screw (5)
The flat surface portion of the peak portion (1a) of one metal roofing material (3) that is inserted into the shaft (9) of the self-drilling screw (5) from the cutting edge (10) side of the tip of the self-drilling screw (5). A packing (6) and a washer (7) interposed between the screw head (11) of the self-drilling screw (5),
One metal roof material (3) has a lower wall (15) sandwiched between the flat surface portion of the peak (1a) and the outer peripheral edge (7a) of the washer (7). And a cap receiver (12) having a standing wall (16) formed on the outer periphery of the outer wall and having an outward locking portion (19) at the upper end of the standing wall (16),
Each screw head (11) includes a cap (13) that is covered from above in order to individually cover the outer periphery including the washer (7) and the cap receiver (12).
The cap (13) includes a cap body (20) formed in a dome shape having an open bottom surface, an annular flange (21) formed to project from the outer periphery of the lower end of the cap body (20), and an inner surface of the cap body (20). The fastening structure of the metal roof material which has a stop part (22) which is provided in the lower end side of the cap and engages with the locking part (19) of the cap receiver (12) upward in a retaining manner . The cap receiver (12) has an annular lower wall (15), a cylindrical standing wall (16) connected to the outer periphery of the lower wall (15), and a latch protruding outward from the upper edge of the standing wall (16). The fastening structure of the metal roofing material of Claim 1 containing a part (19) . The waterproof packing (23) is interposed between the flat surface portion of the peak (1a) of the one metal roofing material (3) and the annular flange (21) of the cap (13). Fastening structure of the described metal roofing material. A metal roofing material (3) having peaks (1a, 1b) and valleys (2);
Screwed from the upper outside of both mountain parts (1a, 1b) in order to fasten the flat surfaces of the mountain parts (1a, 1b) at both ends of the adjacent metal roofing material (3, 3) vertically Self-drilling screw (5)
The flat surface portion of the peak portion (1a) of one metal roofing material (3) that is inserted into the shaft (9) of the self-drilling screw (5) from the cutting edge (10) side of the tip of the self-drilling screw (5). A packing (6) and a metal washer (7) interposed between the screw head (11) of the self-drilling screw (5),
A standing wall (16) formed integrally with the washer (7) and raised on the outer periphery of the center convex washer (7), and an outward locking portion provided on the upper end of the standing wall (16) ( 19) a metal cap receiver (12) having
Each screw head (11) includes a cap (13) that is covered from above in order to individually cover the outer periphery including the washer (7) and the cap receiver (12).
The cap (13) includes a cap body (20) formed in a dome shape having an open bottom surface, an annular flange (21) formed to project from the outer periphery of the lower end of the cap body (20), and an inner surface of the cap body (20). The fastening structure of the metal roof material which has a stop part (22) which is provided in the lower end side of the cap and engages with the locking part (19) of the cap receiver (12) upward in a retaining manner . The cap receiver (12) includes a cylindrical standing wall (16) connected to the circular outer peripheral edge of the washer (7), and a locking part (19) formed by bending outward from the upper end peripheral edge of the standing wall (16). The metal roofing material fastening structure according to claim 4. An annular lower wall (15) in which the cap receiver (12) is connected horizontally to the circular outer peripheral edge (7a) of the middle convex washer (7), and a standing wall (16) rising from the lower wall (15) And an engaging portion (19) provided at the upper end of the standing wall (16),
The waterproof packing (23) is interposed between the lower wall (15) of the cap receiver (12) and the flat surface portion of the peak (1a) of the one metal roofing material (3). Fastening structure of metal roofing material .

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