JP6072416B2 - Roof waterproofing structure for roof-mounted solar panel wiring entry - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a roof water-stop structure for a roof-standing type solar panel wiring lead-in portion that draws wiring of a solar panel placed on a sheet metal roof material of a sloped roof called a horizontal steel sheet roof or the like below a roof base material. .

  Conventionally, the wiring of solar panels arranged on a sloped roof is generally drawn indoors from the outer wall that forms a vertical surface or the back of an eave that forms a horizontal surface, and therefore the piping used for the wiring is exposed outdoors. . Such exposed piping has a problem of affecting the exterior design of the building. Therefore, in order to avoid this, for example, as shown in FIGS. 8 and 9, there is a case where a wiring processing method called a concealed wiring in which wiring is drawn into the indoor side from the roof slope surface directly below the main body of the solar panel 30 is used (for example, Patent Document 1).

  In this concealed wiring, a wiring lead-in metal fitting 31 is generally used. The main body of the wiring lead-in metal fitting 31 is on the outdoor side through a roof material 32, a waterproof layer 33 such as asphalt roofing, and a roof base material 34 such as a field board. And fix with screws 35. When the wiring cable 36 is retracted, a through hole 37 is opened from the outdoor side in the roof material 32, the waterproof layer 33, and the roof base material 34, and the wiring lead-in fitting 31 is disposed in the through-hole 37. The wiring cable 36 is drawn into the indoor side from the inlet.

Japanese Patent No. 4438474

  As described above, the basic configuration of the conventional solar panel wiring lead-in part is composed of the wiring lead-in metal fitting 31, the roofing material 32, the waterproof layer 33, and the roof base material 34. A through-hole 37 communicating with each other is opened. For this reason, in order to secure a waterproof surface in a portion where the through hole 37 is opened, a resin sleeve tube 38 with a water stop material is press-fitted into the through hole 37, and the fracture surfaces of the respective constituent materials are connected to form a primary waterproof layer. Water stoppage treatment such as securing is necessary.

  Further, since the wiring lead-in metal fitting 31 is fixed with screws 35 from the outdoor side through the roof material 32, the waterproof layer 33, and the roof base material 34, a pilot hole for fixing the screws is opened in advance, and sealing is performed in the pilot hole. It is also necessary to perform a water stop treatment such as injecting materials.

  An object of the present invention is to provide a roof water-stopping structure for a roof-standing type solar panel wiring lead-in portion that can be easily constructed and can reduce drilling and water-stopping work on site.

In the roof standing type solar panel wiring lead-in structure of the present invention, a plurality of sheet metal roof materials are arranged along the roof gradient direction on the roof base material of the gradient roof, and each sheet metal roof material is In the roof where the lower edge is overlapped with the upper edge of the sheet metal roofing material arranged on the lower side, the lower edge is inclined so as to increase the distance away from the roof base material as it reaches the lower side of the roof gradient in the sheet metal roofing material. The roof water-stopping structure of the wiring lead-in part that draws the wiring of the solar panel placed on the sheet metal roof material below the roof base material.
A lower member having a cylindrical portion communicating with a wiring lead-in hole provided in the roof base material, and a flange portion extending from the lower end of the cylindrical portion to the outer periphery is fixed to the roof base material with a fixing tool, and the lower member A waterproof tape is applied from the upper surface of the flange portion to the periphery of the lower member on the upper surface of the roof base material, and the sheet metal roof material located on the wiring lead-in hole fits the cylindrical portion of the lower member. An intermediate member having a peripheral wall portion to be inserted is attached, wiring of the solar panel is inserted into the wiring drawing hole from the intermediate member, and a cover that covers the upper surface of the intermediate member is attached to the intermediate member.

According to this configuration, each sheet metal roofing material is inclined so that the distance away from the roof base material increases as it reaches the lower side of the roof gradient in the sheet metal roofing material. The space which becomes an intermediate waterproof layer between the lower member which becomes the primary waterproof layer of the wiring lead-in portion and the intermediate member which is attached on the sheet metal roof material and becomes the secondary waterproof layer of the wiring lead-in portion Is secured. The intermediate waterproof layer can separate the primary waterproof layer and the secondary waterproof layer. As a result, the intermediate member can be bonded and fixed to the sheet metal roofing material without being fixed to the sheet metal roofing material with a fixing tool such as a screw from the outdoor side. The installation work of the member and the water stop treatment work can be reduced, and the construction becomes easy.

In this invention, the intermediate member has a notch for drawing out the wiring on the peripheral wall portion, and the cover includes a wiring cover that covers an upper surface opening of the intermediate member, and a top of the wiring cover. A wiring cover and an upper cover that covers the periphery of the intermediate member, a sealing material that seals the space around the wiring between the wiring lead-out cutout portion of the intermediate member and the wiring cover, and the upper cover and the sealing material for sealing the space surrounding the wire between the intermediate member may be eclipsed set.
In the case of this configuration, the water stoppage at the wiring lead-in portion is further improved.

In the roof standing type solar panel wiring lead-in structure of the present invention, a plurality of sheet metal roof materials are arranged along the roof gradient direction on the roof base material of the gradient roof, and each sheet metal roof material is In the roof where the lower edge is overlapped with the upper edge of the sheet metal roofing material arranged on the lower side, the lower edge is inclined so as to increase the distance away from the roof base material as it reaches the lower side of the roof gradient in the sheet metal roofing material. The roof water-stop structure of the wiring lead-in part that draws the wiring of the solar panel placed on the sheet metal roof material below the roof base material,
A lower member having a cylindrical portion communicating with a wiring lead-in hole provided in the roof base material, and a flange portion extending from the lower end of the cylindrical portion to the outer periphery is fixed to the roof base material with a fixing tool, and the lower member A waterproof tape is applied from the upper surface of the flange portion to the periphery of the lower member on the upper surface of the roof base material, and the sheet metal roof material located on the wiring lead-in hole fits the cylindrical portion of the lower member. Since the intermediate member having a peripheral wall portion to be inserted is attached, the wiring of the solar panel is inserted into the wiring drawing hole from the intermediate member, and the cover that covers the upper surface of the intermediate member is attached to the intermediate member. Drilling and water-stopping work can be reduced, making construction easier.

It is sectional drawing which shows one Embodiment of the roof still water structure of the roof-mounting type solar panel wiring drawing-in part of this invention. It is a disassembled perspective view of the same roof still water structure. It is a partial expanded sectional view of the same roof still water structure. It is explanatory drawing of the lower member attachment operation | work in the same roof still water structure. It is explanatory drawing of the waterproof tape sticking operation | work in the same roof still water structure. It is explanatory drawing of the intermediate member attachment operation | work in the same roof still water structure. It is explanatory drawing of the sheet metal roof material attachment operation | work in the same roof still water structure. It is sectional drawing of a prior art example. It is a fragmentary perspective view of the prior art example.

An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the roof water-stop structure of the roof-standing solar panel wiring lead-in portion of this embodiment has a plurality of sheet metal roof materials 2 constituting a horizontal steel plate roof on a roof base material 1 of a sloped roof. Is a roof water-stop structure of a wiring lead-in part that draws the wiring 21 of the solar panel 20 placed on the sheet metal roof material 2 below the roof base material 1 in the roof arranged along the roof gradient direction. The roof base material 1 corresponds to a field plate of a conventional construction method. Each of the sheet metal roofing materials 2 is inclined at an inclination angle (θ−θ1) that is inclined so that the distance from the roof base material 1 increases as it reaches the lower side of the roof gradient (θ) in the sheet metal roofing materials 2. And the lower edge is superimposed on the upper edge of the sheet metal roofing material 2 arranged on the lower side. However, (theta) 1 is the reverse gradient of the sheet-metal roof material 2 with respect to the roof base material 1. FIG.

  The roof base material 1 is provided with a wiring lead-in hole 3 (for example, a 130 × 40 mm square hole) for drawing the wiring 21 of the solar panel 20 into the indoor side. The lower member 5 is fastened to the roof base material 1 by screws 4 as fixing tools. Prior to the fastening of the lower member 5, as shown in FIG. 4A, one side is adhered to the peripheral edge of the wiring lead-in hole 3 of the roof base material 1 and the peripheral area of the surface to which the lower member 5 is attached. A waterproof tape 6 is attached to the surface. The waterproof tape 6 is attached to the periphery of the wiring lead-in hole 3 by cutting the waterproof tape 6 at a portion corresponding to the wiring lead-in hole 3 and bending the cut portion. Thereby, the waterproof tape 6 will continue over the periphery of the wiring drawing hole 3 from the peripheral area of the surface where the lower member 5 is attached, and water-stopping will be improved.

  The lower member 5 is fastened on the roof base material 1 through the waterproof tape 6 as shown in FIG. The lower member 5 includes a rectangular tube portion 5a communicating with the wiring lead-in hole 3 provided in the roof base material 1, and a rectangular flange portion 5b extending from the lower end of the tube portion 5a to the outer periphery.

  Further, another waterproof tape 7 having adhesive surfaces on both sides is attached to a surface area extending from the upper surface of the flange portion 5b of the lower member 5 to the periphery of the lower member 5 on the upper surface of the roof base material 1. The waterproof tape 7 here is a general term for the waterproof tapes 7A and 7B. In the attaching operation of the waterproof tape 7, as shown in FIG. 5A, first, the waterproof tape 7A is attached to the lower side area of the roof gradient (θ) on the upper surface of the flange portion 5b of the lower member 5. Next, as shown in FIG. 5B, another waterproof tape 7B is attached to the left and right double-side areas of the flange portion 5b so as to overlap the previous waterproof tape 7A. Finally, as shown in FIG. 5C, another waterproof tape 7C is attached to the upper surface area of the roof slope (θ) on the upper surface of the flange portion 5b so as to overlap the previous waterproof tape 7B. By sticking the waterproof tape 7 in such a procedure, it is possible to increase the water stoppage at the attachment portion of the lower member 5 disposed on the roof base material 1 having the roof gradient (θ). A butyl tape or the like is used for the waterproof tapes 6 and 7.

  An intermediate member 8 having a peripheral wall portion 8a into which the cylindrical portion 5a of the lower member 5 is fitted is attached to the sheet metal roof material 2 positioned on the wiring lead-in hole 3. The intermediate member 8 is formed of a plastic molded product or a molded product of a metal material such as aluminum or aluminum alloy. As shown in FIGS. 2 and 3, the intermediate member 8 has a wiring lead-out notch portion 8 b through which the wiring 21 is drawn out on the surface on the lower side of the roof slope of the peripheral wall portion 8 a. Further, the sheet metal roofing material 2 positioned on the wiring lead-in hole 3 has a double structure of a wiring-dedicated steel plate 2B and a sheet metal roofing member 2A stacked thereon.

  The attachment of the intermediate member 8 is performed in advance in a factory or the like without depending on the work on site. The work procedure is shown in FIG. First, as shown in FIG. 6A, an opening 2a into which the cylindrical portion 5a of the lower member 5 is fitted is formed in the wiring-dedicated steel plate 2B of the sheet metal roof material 2, and the peripheral wall portion of the intermediate member 8 is formed in the opening 2a. The intermediate member 8 is attached to the surface of the wiring-dedicated steel plate 2B by arranging and bonding as shown in FIG. FIG. 6C shows a side view of the intermediate member 8 attached to the surface of the wiring-dedicated steel plate 2B. As described above, by attaching the intermediate member 8 to the wiring-dedicated steel plate 2B in advance at a factory or the like, the attachment work of the intermediate member 8 can be omitted by simply attaching the sheet metal roofing material 2 at the site. As shown in FIG. 1, the upper edge of the wiring-dedicated steel plate 2 </ b> B in which the intermediate member 8 is incorporated is fastened to the roof base material 1 by screws 9 as fixing tools. The lower edge of the wiring-dedicated steel plate 2B is engaged with the upper edge of another sheet metal roof material 2 arranged below the roof gradient (θ).

  As shown in FIG. 7, the sheet metal roof covering material 2 </ b> A is positioned on the left and right of the intermediate member 8, and overlapped on the upper surface of the wiring-dedicated steel plate 2 </ b> B and is fastened. In the range in the width direction in which the intermediate member 8 is disposed, the sheet metal roof covering 2A is not stacked, and the sheet metal roof 2 is single.

  As shown in FIG. 1, the main body of the solar panel 20 is installed on the sheet metal roof material 2 via an installation stand 22. The wiring 21 of the solar panel 20 is inserted into the wiring drawing hole 3 of the roof base material 1 from the wiring drawing notch 8b of the peripheral wall 8a of the intermediate member 8, and the cover 10 covering the upper surface of the intermediate member 8 is in the middle. It is attached to the member 8. The cover 10 includes a wiring cover 11 that covers the upper surface opening of the intermediate member 8 and an upper cover 12 that covers the periphery of the wiring cover 11 and the intermediate member 8 from above the wiring cover 11. As shown in FIG. 2, the wiring cover 11 is fixed to the intermediate member 8 with screws 16 that are fixing tools. The upper cover 12 is also fixed to the intermediate member 8 by a beer 17 as a fixing tool as shown in FIG. The intermediate member 8 and the wiring cover 11 constitute a wiring box 13.

  Between the wiring lead-out cutout portion 8 b of the intermediate member 8 and the wiring cover 11, a sealing material 14 for sealing a space around the wiring 21 between these members is provided. Further, a sealing material 15 for sealing a space around the wiring 21 between these members is also provided between the upper cover 12 and the intermediate member 8. The sealing materials 14 and 15 are, for example, curable clay-like or liquid wet materials. This seal structure further improves the water stoppage at the wiring lead-in part.

According to the roof still water structure of the roof-standing type solar panel wiring lead-in portion of this configuration, the sheet metal roof material 2 is inclined so that the distance away from the roof base material 1 increases as it reaches the lower side of the roof gradient (θ). The lower member 5 which is fixed on the roof base material 1 via the waterproof tape 7 and becomes the primary waterproof layer of the wiring lead-in portion, and the sheet metal roof material 2. A space serving as an intermediate waterproof layer is secured between the intermediate member 8 and the intermediate member 8 serving as a secondary waterproof layer of the wiring lead-in portion. The intermediate waterproof layer can separate the primary waterproof layer and the secondary waterproof layer. Thereby, the intermediate member 8 can be adhered and fixed to the sheet metal roofing material 2 without being fixed to the sheet metal roofing material 2 with a fixing tool such as a screw from the outdoor side. Drilling, attachment work of the intermediate member 8, and water stop treatment work can be reduced, and the construction becomes easy.

  In the case of a roof-mounted solar panel, the height and shape of the installation base and the thickness and shape of the solar panel main body greatly affect the appearance design. In this roof still water structure, the installation base of the solar panel 20 Even if the height of 22 is reduced to a minimum height of about 40 mm and the appearance design is taken into consideration, the members for the wiring lead-in portion such as the lower member 5, the intermediate member 8, and the cover 10 are concealed and arranged. can do.

DESCRIPTION OF SYMBOLS 1 ... Roof base material 2 ... Sheet metal roof material 2A ... Sheet metal roof covering material 2B ... Wiring steel plate 3 ... Wiring drawing hole 4 ... Screw (adhesive tool)
DESCRIPTION OF SYMBOLS 5 ... Lower member 5a ... Cylindrical part 5b ... Flange part 7 ... Waterproof tape 8 ... Intermediate member 8a ... Peripheral wall part 8b ... Notch part 10 for wiring drawing ... Cover 11 ... Wiring cover 12 ... Upper cover 14, 15 ... Sealing material 20 ... Solar panel 21 ... Wiring

Claims (2)

A plurality of sheet metal roof materials are arranged along the roof gradient direction on the roof base material of the sloped roof, and each sheet metal roof material is separated from the roof base material as it reaches the lower side of the roof gradient in these sheet metal roof materials. In the roof where the lower edge is inclined and separated so as to increase the distance and the upper edge of the sheet metal roofing material arranged on the lower side is overlapped, the wiring of the solar panel placed on the sheet metal roofing material is connected to the roof base material. The roof waterproof structure of the wiring lead-in part that pulls downward,
A lower member having a cylindrical portion communicating with a wiring lead-in hole provided in the roof base material, and a flange portion extending from the lower end of the cylindrical portion to the outer periphery is fixed to the roof base material with a fixing tool, and the lower member A waterproof tape is applied from the upper surface of the flange portion to the periphery of the lower member on the upper surface of the roof base material, and the sheet metal roof material located on the wiring lead-in hole fits the cylindrical portion of the lower member. An intermediate member having a peripheral wall portion to be inserted is attached, wiring of the solar panel is inserted from the intermediate member into the wiring lead-in hole, and a cover that covers the upper surface of the intermediate member is attached to the intermediate member Roof waterproof structure of solar panel wiring lead-in part.   In Claim 1, The said intermediate member has the notch part for wiring drawing | extracting from which the said wiring is drawn out in the said surrounding wall part, The said cover is a wiring cover which covers the upper surface opening of the said intermediate member, From above this wiring cover A sealing material for sealing a space around the wiring between the wiring drawing cutout portion of the intermediate member and the wiring cover, and an upper cover. The roof waterproofing structure of the roof-standing type solar panel wiring lead-in part provided with a sealing material that seals the space around the wiring between the intermediate member.

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