JP5110179B2 - Roofing material - Google Patents

Description

  The present invention relates to a metal roofing material for a building structure, and more particularly to a roofing material for a side roof having a snowfall prevention function.

  Conventionally, in a roofing material for a side roof that is formed by bending a metal plate, a rising portion is provided in the front direction in order to provide a snowfall prevention function.

  (Prior Art 1) FIG. 8 is a cross-sectional view of a roof material having a snowfall prevention function disclosed in Patent Document 1. In FIG. In the figure, the right direction is the ridge direction (upward direction), and the left direction is the eave direction (downward direction). The upper edge contact portion 1003 protruding in the front direction in a substantially S shape on the edge of the ridge side is connected to the upper edge contact portion 1003, the central horizontal portion 1010 is connected to the central horizontal portion 1010, and the triangular direction is the front direction. The eaves side horizontal portion 1006 that continues to the protrusion 1002 is connected to the eave side horizontal portion 1006, and a substantially V-shaped lower edge contact portion 1001 is formed on the eave side edge, respectively. Yes.

  Therefore, the roof can be spread by fitting the lower edge contact portion 1001 of the second roof material to the upper edge contact portion 1003 of the first roof material installed on the eaves side. Further, the ridge side surface of the protrusion 1002 stops the snow slide by stopping the snow slide, and the eave side of the protrusion 1002 supports the snow slide pressure.

  (Prior Art 2) FIG. 9 is a cross-sectional view of a roofing material disclosed in Patent Document 2 having a snowfall prevention function. In the figure, the right direction is the ridge direction (upward direction), and the left direction is the eave direction (downward direction). The upper edge contact portion 2004 that protrudes in the front direction in a substantially S shape on the ridge side is connected to the upper edge contact portion 2004, the central horizontal portion 2010 is connected to the center horizontal portion 2010, and protrudes in the triangular shape in the front direction. The protruding part 2002 is connected to the protruding part 2002, the eaves side horizontal part 2006 is connected to the eaves side horizontal part 2006, and a substantially U-shaped lower edge contact part 2001 is formed on the edge of the eaves side. .

  Therefore, the lower edge contact part 2001 of the 2nd roof material can be fitted to the upper edge contact part 2004 of the 1st roof material installed in the eaves side, and a roof can be spread. Further, the ridge side surface of the protrusion 2002 stops the snow slide by stopping the snow slide, and the eave side of the protrusion 2002 supports the snow slide pressure. Furthermore, the air layer is secured by separating the eave side horizontal portion 2006 from the base surface.

  (Prior Art 3) FIG. 10 is a perspective view showing a part of a long roof siding board having a snowfall prevention function disclosed in Patent Document 3. In the figure, the left direction is the ridge direction (upward direction), and the right direction is the eave direction (downward direction). The reinforcing rising portion 3011 bent substantially perpendicular to the edge of the ridge side is connected to the reinforcing rising portion 3011, the tip horizontal portion 3021 having a predetermined width is connected to the tip horizontal portion 3021, and the U-shaped ridge side The contact portion 3002 is connected to the ridge-side contact portion 3002, the central horizontal portion 3022 is connected to the central horizontal portion 3022, and the trapezoidal snowfall prevention protrusion 3005 is connected to the snowfall prevention protrusion 3005. The horizontal part 3023 is formed with a U-shaped eaves side contact part 3001 at the eaves side edge part of the eaves side horizontal part 3023.

  Therefore, the eaves-side contact portion 3001 of the second roof material can be fitted to the ridge-side contact portion 3002 of the first roof material installed on the eave side, and the roof can be spread. Further, the snow fall prevention protrusion 3005 stiffened by the fitted reinforcing start-up part 3011 exhibits a snow fall prevention function.

Utility Model Registration No. 3008868 Utility Model Registration No. 3020379 JP 2000-282630 A

  However, in the prior art, the eaves-side horizontal portions 1006, 2006 or the projections 1002, 2002 that support the sliding pressure of snow or the eaves-side horizontal portions 1006, 2006 or 3023 and a lower edge contact portion 1001, 2001 or an eave side contact portion 3001 (hereinafter collectively referred to as an eave side fitting portion) is arranged on the eave side edge of the eave side horizontal portion 1006, 2006 or 3023. Therefore, there were the following problems.

  FIG. 11 is a cross-sectional view for explaining the situation of the rising portion in the prior art. In FIG. 11, the left direction in the figure is the ridge direction (upward direction), the right direction is the eave direction (downward direction), and the first roofing material 4000 installed on the eave side has a The ridge-side fitting portion in which the roof is wound by fitting the eaves-side fitting portion of the second roofing material 5000 is substantially S-shaped, and the tip horizontal portion 4001 installed at the ridge-side edge. (Side ab in the drawing), an inclined portion 4002 (side bc in the drawing) that is inclined to the eave side and bent to the eave side continuously to the tip horizontal portion 4001, and a ridge side horizontal portion 4003 that is continuous to the inclined portion 4002 (Side cd in the figure), a ridge end vertical part 4004 (side de in the figure) bent to the back side connected to the ridge side horizontal part 4003, and a ridge direction and an eave direction connected to the ridge side vertical part 4004 And a concave portion 4005 (formed by side ef and side fg in the figure).

  On the other hand, the eaves side fitting portion includes a central horizontal portion 5006 (side st in the drawing) and a rising portion 5007 (formed by side tu and side uv in the drawing) continuous to the central horizontal portion 5006. An eaves side horizontal portion 5008 (side vx in the figure) connected to the rising portion 5007, an eave side vertical portion 5009 (side xy in the drawing) bent to the back side connected to the eave side horizontal portion 5008, It has the protrusion part 5010 (side yz in a figure) which continued to the side and was bent in the substantially ridge direction.

  And the protrusion part 5010 is fitted in the recessed part 4005. In other words, the pocket part formed by the eaves side horizontal part 5008, the eaves side vertical part 5009, and the protrusion part 5010 (in the figure, the side vx, the side xy, and the side a protrusion formed by a ridge side horizontal portion 4003, a ridge tip vertical portion 4004, and a concave portion 4005 (in the figure, formed by a side cd, a side de, and a side ef). The protrusion 5010 (side yx in the drawing) is in watertight contact with the front side surface (side ef in the drawing) of the recessed portion 4005.

  Therefore, when the snow is going to slide in the eave direction, the load of snow acts on the rising portion 5007, and the rising portion 5007 uses the force pushed out in the horizontal direction (eave side) and the bent portion t as a fulcrum. Will be knocked down to the side. At this time, the eaves side horizontal portion 5008 generates a stress that is pushed out in the eave direction, and a stress that generates a gap in the fitting portion between the protruding portion 5010 and the recessed portion 4005 is generated.

  Further, since the original plate constituting the roof plate is thin, the ridge side portion of the eaves side horizontal portion 5008 sinks in the reverse direction with the bent portion v as a fulcrum while the bent portion v maintains the shape. As a reaction force of the rotational force, a stress is generated in a direction in which the tip (position z in the drawing) of the protrusion 5010 opens.

  Therefore, although the fitting part does not come off, there is a possibility that a waterproof problem may occur due to a slight opening of the fitting part.In this state, when the snow on the roof surface melts and refreezes at the eaves The risk of “spilling” is higher than usual. In addition, even when a string-like waterproof packing material is pushed into the fitting portion as in the prior art 3, since the stress in the direction of reducing the effect of the waterproof packing material acts, the waterproof property may be deteriorated. The problem with being will not be solved.

  Further, in the prior art 3, when the rising portion 3005 is stiffened by the reinforcing rising portion 3011, the strength against falling of the rising portion due to snow is improved, but stress is exerted in the direction in which the waterproofness is deteriorated. The problem that occurs is not solved. Moreover, there is also a problem that the workability is deteriorated as compared with the conventional techniques 1 and 2. That is, while the eaves side fitting portion 3001 is a form suitable for sliding and fitting to the side, the reinforcing rising portion 3011 is configured vertically, and the rising portion 3005 provided vertically Since the structure is inserted into the roof, when the roofing materials are fitted together, the leading end of the eaves-side fitting part 3001 is hooked and the reinforcing rising part 3011 is tilted forward or the rising part 3005 is opened and fitted. It becomes necessary to construct by the method, and it becomes a trouble in construction. Further, although the strength of the rising portion 3005 is improved by the stiffening of the rising portion 3005, the thickness of the reinforcing rising portion 3011 is as thin as that of the roofing material, and the direction of the stress generated in the fitting portion However, there is still an improvement effect, but it still contains the danger of waterproofing.

  FIG. 12 is a cross-sectional view schematically illustrating a situation in the case where negative pressure is applied to the roofing material in the prior art. In FIG. 12, the left direction in the figure is the eave direction (downward direction), the right direction is the ridge direction (upward direction), and the first direction from the eave side to the ridge direction (from left to right in the figure) Roof material 6000, second roof material 7000, and third roof material 8000.

  The first roofing material 6000 is fixed to the field board 9999 by installation nails 6021 at the tip horizontal portion 6001 provided at the edge on the ridge side.

  The second roofing material 7000 has an eaves-side fitting portion 7030 fitted into the ridge-side fitting portion 6020 of the first roofing material 6000, and is installed at the tip horizontal portion 7001 provided at the edge of the ridge side. It is fixed to the base plate 9999 by a nail 7021.

  The third roof material 8000 has an eaves side fitting portion 8030 fitted to a ridge side fitting portion 7020 of the second roof material 7000.

  Accordingly, when the wind pressure acts on the negative pressure, the second roofing material 7000 is loaded in a direction in which the second roofing material 7000 is displaced in a drum shape with the ridge side fitting portion 7020 and the eaves side fitting portion 7030 as fulcrums (in the drawing). , Indicated by arrows). At this time, the amount of displacement increases as the rigidity of the roofing material 7000 is lower, the distance between the fulcrums is larger, and the rotation restraining force of the fulcrum is weaker. In particular, since a rising portion 7005 is installed at an intermediate portion of these fulcrums, and the plate thickness is thin, there is a fulcrum that can be freely displaced and rotated structurally, and there is no rising portion. There is a tendency for the amount of displacement to increase as compared with the above. For this reason, there is a risk that the fitting portion may be loosened or deformed, resulting in deterioration of rain or damage to the roof.

  This invention was made in order to solve the above problem, Comprising: It aims at providing the roofing material which the force of the direction which loosens does not act on the fitting part of roofing materials mutually.

  The roofing material of the present invention for solving such a problem is as follows.

  [1] A roofing material for a side roof that has a ridge-side fitting portion arranged on the ridge side and an eave-side fitting portion arranged on the eave side, and is formed by fitting each other with metal folded plates. The ridge-side fitting portion has a recess that opens in the eave direction, and the eave-side fitting portion has a protruding portion that protrudes in the ridge direction, and the second roof material in the recess of the first roof material The projecting portion of the projecting portion can be fitted, and a rising portion that rises in the front direction from the projecting portion is formed, and the projecting portion is connected to the lower edge of the eave-side surface of the rising portion. The roofing material is characterized by being bent in the ridge direction.

  [2] In the above [1], the eaves side surface of the rising portion is inclined substantially at a right angle or in the ridge direction with respect to the protruding portion.

  [3] In the above [1] or [2], a stiffening plate is disposed between the ridge side surface and the eaves side surface of the rising portion. .

  [4] In the above [3], the plate-like body installed on the second roof material can freely contact the eaves side of the ridge-side fitting portion of the first roof material. Is.

  [5] In any one of the above [1] to [4], a watertight rod-like body is disposed in the concave portion.

According to the roof material of the present invention described above, the following remarkable effects can be obtained.
1) Since the fitting part of roof materials receives the force which fits more closely by the load of snow, watertightness is ensured and the risk of a leak of wood reduces.
2) When fitting at two locations in the width direction, when the wind pressure acts on the negative pressure, the drum-like displacement is suppressed, reducing the risk of looseness or deformation of the fitting part, and The risk of deterioration and damage to the roof is reduced.

It is sectional drawing of the width direction which shows one Embodiment of the roofing material concerning this invention. It is sectional drawing of the width direction which shows the method of constructing one embodiment of the roofing material concerning this invention. It is sectional drawing of the width direction explaining the effect | action in one Embodiment of the roofing material concerning this invention. It is sectional drawing of the width direction which shows other embodiment of the roof material concerning this invention. It is sectional drawing of the width direction which shows the method of constructing other embodiment of the roof material concerning this invention. It is the cross section of the width direction explaining the effect | action in other embodiment of the roof material concerning this invention. It is sectional drawing of the width direction which shows the installation condition in other embodiment of the roof material concerning this invention. It is sectional drawing of the roof material which has the conventional snowfall prevention function. It is sectional drawing of the roof material which has the conventional snowfall prevention function. It is a perspective view which shows a part of long roof board | substrate for recumbent which has the conventional snowfall prevention function. It is sectional drawing explaining the condition of the raising part in a prior art. It is sectional drawing which illustrates typically the condition at the time of a negative pressure acting on the roof material in a prior art.

[Embodiment 1]
(Roofing material) FIG. 1 is a sectional view in the width direction showing an embodiment of a roofing material according to the present invention, wherein the left direction is the ridge direction (upward direction) and the right direction is the eave direction (downward direction). is there. In the following description, the same parts as those in the embodiment shown in FIG. 1A are denoted by the same reference numerals in the first digit, and a part of the description is omitted.

  In FIG. 1 (a), the ridge side is bent at the edge of the ridge side at the edge horizontal portion 1 (side AB in the figure) and the edge horizontal portion 1 inclining toward the eaves side in the front direction. The ridge side inclined part 2 (side BC in the figure), the ridge side horizontal part 3 (side CD in the figure) connected to the ridge side inclined part 2, and the ridge side bent to the back side connected to the ridge side horizontal part 3 A vertical part 4 (side DE in the figure), a concave part 5 (formed by side EF and side FG in the figure) that is continuous with the ridge side vertical part 4 and bent in the ridge direction and the eave direction, and a concave part 5, a central horizontal portion 6 (side GT in the figure) is formed.

  On the eaves side, an eaves-side inclined portion 7 (side TU in the figure) that is bent in the front direction continuously to the central horizontal portion 6, and an eaves-side horizontal portion 8 (side UW in the figure) connected to the eaves-side inclined portion 7. ) And a rising portion 9 (in the figure, a ridge-side surface 9W (side WX in the drawing) and an eave-side surface 9Y (side XY in the drawing) that are connected to the eave-side horizontal portion 8 and project in the front direction. And a protruding portion 10 (side YZ in the figure) bent in the ridge direction is formed continuously to the lower edge of the eave-side surface 9Y of the rising portion 9.

  And the protrusion part 10 of the other roof material can fit in the said recessed part 5 of one roof material. In other words, the eaves-side inclined portion 7 of the other roof material, the eave-side horizontal portion 8, a part of the eave-side surface 9Y, and the projecting portion 10 (side TU, side UW and side XY in the figure). And a protrusion formed by the ridge-side inclined portion 2, the ridge-side horizontal portion 3, the ridge-side vertical portion 4, and the concave portion 5 (in the figure, side BC) The side CD, the side DE, and the side EF) are freely retractable.

  Further, in this stored state, if the back surface of the eaves side horizontal portion 8 of the other roof material comes into contact with the surface of the ridge side horizontal portion 3 of one roof material, the rigidity of the ridge side horizontal portion 3 is increased. However, this invention is not limited to what touches, and a clearance gap may exist between the surface of the ridge side horizontal part 3, and the back surface of the eaves side horizontal part 8 of the other roof material.

  Further, the present invention is not limited to the ridge-side horizontal portion 3 and the eaves-side horizontal portion 8 being substantially parallel to the central horizontal portion 6, and may be inclined toward the ridge side or the eaves side. The side horizontal part 3 and the eaves side horizontal part 8 may not be substantially parallel to each other.

  Furthermore, the ridge-side inclined part 2 and the ridge-side horizontal part 3 or the eaves-side inclined part 7 and the eaves-side horizontal part 8 may be formed by continuous curves or straight lines, respectively.

  The tip edge (position Z in the figure) of the protrusion 10 is not limited to a substantially U-shaped folded shape, but may be a substantially S shape, a substantially L shape, or other shapes. Further, the tip edge (position A in the figure) of the tip horizontal portion 1 is not limited to a flat single plate, but is bent in a substantially L shape, or substantially U-shaped or substantially V-shaped. It may be folded back into a shape.

  FIG. 1A shows an eave-side surface 9Y (side XY in the drawing) of the rising portion 9 that is substantially perpendicular to the protruding portion 10 (side YZ in the drawing), and the ridge-side surface of the rising portion 9 9W (side WX in the figure) is substantially parallel to the eave-side surface 9Y of the rising portion 9, and the ridge-side horizontal portion 3 and the eave-side horizontal portion 8 are parallel to the central horizontal portion 6.

  In FIG. 1B, the eaves-side surface 19Y is inclined toward the ridge side with respect to the protruding portion 20, the ridge-side surface 19W is substantially vertical (substantially perpendicular to the central horizontal 16), and the triangular upright portion 19 is shown. Is formed.

  In FIG. 1 (c), the eave side surface 29Y is inclined toward the ridge side with respect to the protrusion 30 (the same as the central horizontal 26), and the ridge side surface 29W is substantially parallel to the eave side surface 29Y. In addition, the ridge-side horizontal portion 23 and the eaves-side horizontal portion 28 are inclined toward the ridge side.

  1D, the eave side surface 39Y is inclined to the ridge side with respect to the protrusion 40 (the same as the central horizontal 36), and the ridge side surface 39W (side WX in the figure) is also on the ridge side. Furthermore, it inclines and forms the triangle-shaped standing part 39, and also the ridge side horizontal part 33 and the eaves side horizontal part 38 incline toward the ridge side, respectively, and the ridge side inclination part 32 and the eaves side inclination part 37 are respectively. The ridge-side inclined portion 32 and the ridge-side horizontal portion 33, and the eaves-side inclined portion 37 and the eave-side horizontal portion 38 are respectively formed by continuous straight lines.

  (Construction method) FIG. 2 is a cross-sectional view in the width direction showing a method of constructing an embodiment of the roofing material according to the present invention, wherein the left direction is the ridge direction (upward direction) and the right direction is the eave direction ( Down). 2, the same reference numerals as those in FIG. 1A are assigned to the same parts as those described in FIG. 1A, and a part of the description is omitted.

  In FIG. 2A, the first roof material 100 is wound on the base plate 999. At this time, the installation nail 111 penetrates the first roofing material 100 and is placed on the base plate 999 in the tip horizontal portion 101. The second roof material 200 is arranged on the ridge side of the first roof material 100.

  In FIG. 2B, the protruding portion 210 of the second roof material 200 is aligned with the position of the concave portion 105 of the first roof material 100. At this time, the eaves side horizontal portion 208 of the second roof material 200 is overlaid on the ridge side horizontal portion 103 of the first roof material 100.

  In FIG. 2C, the protruding portion 210 of the second roof material 200 is inserted into the concave portion 105 of the first roof material 100 by moving the second roof material 200 in the ridge direction. Then, in the tip horizontal portion 201 (not shown), the installation nail 211 (not shown) penetrates the second roof material 200 and is placed on the field board 999. At this time, the surface (side CD in the figure) of the ridge side horizontal part 103 of the first roof material 100 and the back surface (side UW in the figure) of the eaves side horizontal part 208 of the second roof material 200 come into contact. The front side (side EF in the figure) of the concave portion 105 of the first roof material 100 and the surface (side YZ in the figure) of the protrusion 210 of the second roof material 200 are in contact.

  (Operation) FIG. 3 is a cross-sectional view in the width direction for explaining the operation in the embodiment of the roofing material according to the present invention, wherein the left direction is the ridge direction (upward direction) and the right direction is the eave direction (downward direction). ). Note that the last two digits of the reference numerals in FIG. 3 are given the same reference numerals as those described with reference to FIG. 1A or FIG.

  In FIG. 3, when snow is about to slide in the eave direction, the load of snow acts on the rising portion 209, and the rising portion 209 receives a force in the direction of being tilted to the eave side with the bending position W as a fulcrum. At this time, the protruding portion 210 connected to the eave-side surface 209 </ b> Y of the rising portion 209 tends to rotate around the bending position W. Therefore, the protrusion 210 receives a force that further enters the back of the recess 105, and further tries to push up the front surface (side EF in the drawing) of the recess 105 in the front direction.

  That is, due to the load of snow, the fitting between the protrusion 210 and the recess 105 becomes tighter, and the water tightness is not deteriorated.

[Embodiment 2]
(Roofing material) FIG. 4 is a sectional view in the width direction showing another embodiment of the roofing material according to the present invention, in which the left direction is the ridge direction (upward direction) and the right direction is the eave direction (downward direction). It is. In FIG. 4, the roofing material is the one shown in FIG. 1 (Embodiment 1) in which a tip fitting portion 60 and an intermediate fitting portion 70 are arranged.

  That is, on the ridge side, the edge horizontal portion 41 (side AB in the figure) is formed on the edge of the ridge side, and the ridge side inclined portion 42 (belonging to the edge horizontal portion 41 and inclined to the eave side and bent in the front direction) In the figure, the building side horizontal part 43 (side CD in the figure) connected to the side BC) and the building side inclined part 42, and the building side vertical part 44 bent to the back side connected to the building side horizontal part 43 (in the figure). , Side DE), a concave portion 45 (formed by side EF and side FG in the figure) that is continuous with the ridge-side vertical portion 44 and bent in the ridge direction and the eave direction, and a central horizontal portion that is continuous with the concave portion 45 46 (side GT in the figure) is formed.

  On the other hand, on the eaves side, an eaves side inclined portion 47 (side TU in the figure) bent in the front direction connected to the central horizontal portion 46, and an eave side horizontal portion 48 (in the drawing, Sides UW), rising portions 49 (in the figure, ridge side surface 49W (side WX in the figure) and eaves side surface 49Y (in the figure, side) XY)), and a protrusion 50 (side YZ in the figure) bent in the ridge direction, connected to the lower edge (position Y in the figure) of the eave-side surface 49Y of the rising part 49 Is formed.

  The tip fitting portion 60 includes a tip vertical portion 61 (side in the drawing) that is bent in the front direction at a part of the tip horizontal portion 41 (side AB in the drawing) and an edge on the ridge side of the tip horizontal portion 41. AN) and a tip folded portion 62 (side NO in the figure) that is connected to the tip vertical portion 61 and folded back to the eaves side.

  The center fitting portion 70 is connected to the ridge side portion (side GH in the drawing) of the central horizontal portion 46 and is inclined toward the eave side and bent in the front direction (side HI in the drawing). A central horizontal portion 73 (side IJ in the figure) that is continuous with the central inclined portion 72, a central vertical portion 74 (side JK in the drawing) that is bent in the reverse direction and continuous with the central horizontal portion 73, and a central vertical portion 74. Is formed by a central projecting portion 75 (formed by side KL and side LM in the figure) that is bent in the building direction and the eave direction. Note that the back side surface (side LM in the drawing) of the central projecting portion 75 is continuous with the eaves side portion (side MT in the drawing) of the central horizontal portion 46.

  At this time, the horizontal distance (the horizontal distance AE in the figure) between the tip vertical portion 61 and the ridge side vertical portion 44 is the horizontal distance between the tip of the intermediate projecting portion 75 and the eaves side surface 49Y of the rising portion 49 (see FIG. Middle, horizontal distance LY). Therefore, the protrusion part 50 and the center protrusion part 75 of the other roof material can be fitted to the concave part 45 and the tip fitting part 60 of one roof material, respectively.

Note that the central projecting portion 75 may abut either the tip folded portion 62 (side NO in the drawing) or a part of the tip horizontal portion 41 (side AB in the drawing). Instead of this, the tip folding portion 62 (side NO in the figure) is a central horizontal portion 73 (side IJ in the drawing) of the center fitting portion 70 or a front side surface (in the drawing, side IJ). It may be in contact with any one of the sides KL).
(Construction Method) FIG. 5 is a cross-sectional view in the width direction showing a method for constructing another embodiment of the roofing material according to the present invention, the left direction is the ridge direction (upward direction), and the right direction is the eave direction. (Downward). 5, the same reference numerals as those in FIG. 4 are given to the same parts as those described in FIG. 4, and a part of the description is omitted.

  In FIG. 5A, the first roof material 300 is wound on the base plate 999. At this time, the installation nail 351 penetrates the first roofing material 300 and is placed on the base plate 999 at the tip horizontal portion 341. The second roof material 400 is arranged on the ridge side of the first roof material 300.

  In FIG. 5B, the protruding portion 450 of the second roof material 400 is aligned with the position of the concave portion 345 of the first roof material 300. At this time, the center fitting portion 470 of the second roof material 400 is placed on the tip horizontal portion 341 of the first roof material 300.

  In FIG. 5 (c), the second roofing material 400 is moved in the ridge direction, so that the intermediate fitting of the second roofing material 400 is performed on the front end fitting portion 360 and the recess 345 of the first roofing material 300. The central protrusion 475 and the protrusion 450 of the part 470 are fitted. Then, an installation nail 451 (not shown) is driven through the second roof material 400 and placed on the field board 999 at the tip horizontal portion 441 (not shown).

  (Operation) FIG. 6 is a cross-sectional view in the width direction for explaining the operation in the embodiment of the roofing material according to the present invention, in which the left direction is the ridge direction (upward direction) and the right direction is the eave direction (downward direction). ). The same parts as those described in FIG. 5 are denoted by the same reference numerals, and a part of the description is omitted.

  In FIG. 6, the first roofing material 300, the second roofing material 400, and the third roofing material 500 are spread from the eaves side toward the building.

  The first roof material 300 is fixed to the base plate 999 by the installation nail 351 at the tip horizontal portion 341.

  The second roof material 400 has a protruding portion 450 and a central protruding portion 475 fitted into the concave portion 345 and the front end fitting portion 360 of the first roof material 300, respectively, and an installation nail 451 at the front end horizontal portion 441. Is fixed to the base plate 999.

  In the third roof material 500, the projecting portion 550 and the central projecting portion 575 are respectively fitted into the concave portion 445 and the tip fitting portion 460 of the second roof material 400, and are not shown in the tip horizontal portion 541 (not shown). It is fixed to the base plate 999 by installation nails 551.

  Therefore, when the wind pressure acts on the negative pressure of the second roof material 400, a load (indicated by an arrow in the figure) acts in a direction in which the second roof material 400 is displaced like a drum with the concave portion 445 and the intermediate fitting portion 470 as fulcrums. To do. If the intermediate fitting portion 470 is not arranged, the middle fitting portion 470 is displaced in a drum shape with the concave portion 445 and the protruding portion 450 serving as fulcrums. The distance is greatly reduced, and the amount of displacement is reduced. Therefore, the risk of loosening or deformation of the fitting portion is reduced, and the problem that the rain performance is deteriorated is solved.

[Embodiment 3]
(Installation status of roof material) FIG. 7 is a cross-sectional view in the width direction showing the installation status in another embodiment of the roof material according to the present invention, the left direction is the ridge direction (upward direction), and the right direction is The eaves direction (downward). The same parts as those in the first embodiment described in FIGS. 1 and 2 are denoted by the same reference numerals, and a part of the description is omitted.

  In FIG. 7A, a plate-like body 80 (thickness 5 mm) made of an acrylic plate is disposed inside the rising portion 209 of the second roof material 200. In other words, the plate-like body 80 is sandwiched between the ridge-side surface 209W and the eaves-side surface 209Y of the rising portion 209, and further on the ridge-side vertical portion 104 (side DE in the drawing) of the first roof material 100. It is in contact.

  Accordingly, when a force is exerted on the rising portion 209 toward the eaves side with the bending position W as a fulcrum by the load of snow, the rising portion 209 is stiffened by the plate-like body 80, and the plate-like body 80 is Since the ridge side vertical portion 104 (side DE in the drawing) of the first roof material 100 is strongly pressed and resists rotation, the rising portion 209 is not tilted at the bent position W. In addition, the protrusion 210 receives a force in a direction to further enter the back of the recess 105 and tries to push up the front surface (side EF in the drawing) of the recess 105 in the front direction.

  That is, the rising portion 209 is prevented from falling due to the load of snow and the function of preventing snow fall is prevented, and the fitting between the protruding portion 210 and the recessed portion 105 becomes tighter, the water tightness is improved, and the rain finishes. The risk of worsening is reduced.

  The plate-like body 80 is not limited to an acrylic plate, and the same effect can be obtained even if it is another plastic plate, a metal plate such as aluminum, or wood. Further, the thickness of the plate-like body 80 can be stored in the rising portion 209 and is equal to or less than the inner width, and the height thereof is the height of the eave-side surface 209Y (height XY in the figure). Hereinafter, at least the height ½ or more of the surface 209Y on the eaves side is desirable.

  In FIG. 7B, the rod-shaped body 90 is disposed in the concave portion 105 of the first roof material 100. That is, the rod-shaped body 90 is pushed into the bottom of the recess 105 by the protruding portion 210 of the second roof material 200. Therefore, when the rising portion 209 receives a force in the direction of being tilted toward the eave side with the bending position W as a fulcrum due to the load of snow, the protruding portion 210 receives a force that further enters the back of the concave portion 105. Tightens, watertightness is further improved, and the risk of leakage is reduced.

1, 11, 21, 31, 41 Tip horizontal part 2, 12, 22, 32, 42 Building side inclined part 3, 13, 23, 33, 43 Building side horizontal part 4, 14, 24, 34, 44 Building side vertical Part 5, 15, 25, 35, 45 Recess 6, 16, 26, 36, 46 Central horizontal part 7, 17, 27, 37, 47 Eave side inclined part 8, 18, 28, 38, 48 Eave side horizontal part 9 , 19, 29, 39, 49 Rising part 9W, 19W, 29W, 39W, 49W Building side surface 9Y, 19Y, 29Y, 39Y, 49Y Eave side surface 10, 20, 30, 40, 50 Protruding part 60 Tip Fitting part 61 Front end vertical part 62 Front end folding part 70 Central fitting part 72 Central inclined part 73 Central horizontal part 74 Central vertical part 75 Central projecting part 80 Plate body 90 Rod-like body 100 First roof material 101 Front horizontal part 103 Building side horizontal section 104 Side vertical part 105 Concave part 106 Central horizontal part 111 Installation nail 200 Second roofing material 201 Tip horizontal part 206 Central horizontal part 208 Eave side horizontal part 209 Rising part 209W Building side surface 209Y Eave side surface 210 Projection part 211 Installation nail 300 First roof material 341 Front horizontal portion 343 Building side horizontal portion 345 Recess 351 Installation nail 360 Front end fitting portion 400 Second roof material 441 Front horizontal portion 445 Recess 448 Eave side horizontal portion 450 Projection portion 451 Installation nail 460 Front fitting part 470 Central fitting part 472 Central inclined part 473 Central horizontal part 475 Central protruding part 500 Third roof material 541 Horizontal tip part 551 Installation nail 545 Recessed part 550 Protruding part 999 Field plate

Claims (5)

A roofing material for a recumbent roof that has a ridge-side fitting portion arranged on the ridge side and an eave-side fitting portion arranged on the eave side, and is formed by fitting each other with metal folded plates. ,
The ridge-side fitting portion has a recess that opens in the eave direction, and the eave-side fitting portion has a protruding portion that protrudes in the ridge direction, and the protruding portion of the second roof material in the recess of the first roof material Can be freely fitted,
Furthermore, a rising portion that rises in the front direction from the protruding portion is formed,
The roof material characterized in that the protruding portion is formed by being bent in the ridge direction in a row along the lower edge of the eave-side surface of the rising portion.   The roof material according to claim 1, wherein a surface on the eaves side of the rising portion is inclined at a substantially right angle or a ridge direction with respect to the protruding portion.   The roofing material according to claim 1, wherein a stiffening plate-like body is disposed between a ridge side surface and an eave side surface of the rising portion.   4. The roofing material according to claim 3, wherein the plate-like body installed on the second roofing material is capable of contacting the eaves side of the ridge-side fitting portion of the first roofing material. The roofing material according to any one of claims 1 to 4, wherein a rod-shaped body for watertightness is disposed in the recess.

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