JP7166768B2 - roof structure - Google Patents

Description

The present invention relates to a roof structure in which a roofing material with solar cell modules is arranged on the roof surface.

In Patent Document 1, a long rectangle is formed in the purlin direction, one joint edge is formed on the ridge side edge, the other joint edge is formed on the eave side edge, and joint edges are formed on both ends in the purlin direction. A roofing material which consists of a formed roof body and a heat insulating material provided on the back side thereof, is placed on a sheathing board of a roof, and is joined and fixed to other adjacent roofing materials for roofing, wherein the roof body is A roof structure is disclosed in which a solar cell module is integrally attached to the front surface of the roof. In this structure, an output cable with a connector is present floating above the roof surface, and the metal fittings of the solar cell module are positioned below the output cable.

JP-A-2005-36604

However, the structure is not structured to receive the output cable, and there is a risk that the output cable may fall onto the mounting hardware or onto the sheathing board. Then, as described above, in a state where the output cable has fallen on the sheathing board, if a spark is generated due to damage to the covering of the output cable, poor connection of the connector, etc., and flies onto the sheathing board, There is a risk of fire breaking out from this roof board. In addition, even if the output cable falls on the mounting bracket, if spark is generated from the output cable, the heat is transmitted through the mounting bracket and directly to the roofing board below it, and from this roofing board Fire may occur.

The present invention provides a roof structure capable of suppressing a fire from erupting from the roof even when sparks are generated from cables of solar cell modules installed on the roof.

In order to solve the above problems, the roof structure of the present invention is a roof structure in which a roof material with a solar cell module is arranged on a roof surface, wherein a receiving surface portion for receiving a cable of the solar cell module is provided with the roof material It is characterized in that it exists through a space or a fireproof material between the roof surface on the lower side of the

With the above configuration, the receiving surface portion for receiving the cable of the solar cell module prevents direct contact between the cable and the roof surface. Therefore, it is possible to suppress the spark generated from the cable from reaching the roof surface, thereby suppressing the outbreak of fire from the roof surface. In addition, since the receiving surface portion exists between the roof surface and the roof surface on the lower side of the roof material via a space or a fireproof material, it is possible to suppress the occurrence of a fire when the receiving surface portion is heated by the spark. .

The receiving surface portion may be a surface portion of a receiving member that receives the cable.

The receiving member may have a housing recess for housing the cable. According to this, simplification of the arrangement|positioning work of the said cable can be achieved.

The receiving member may be made of metal. According to this, it is possible to employ a receiving member made of, for example, a steel plate or other metal plate, thereby reducing the manufacturing cost of the receiving member and facilitating the installation work.

The receiving member may be fixed to a crosspiece on the roof surface. According to this, the height of the horizontal rail can be used, and it becomes easy to interpose a space or a fireproof material under the receiving member.

A roofing material integrally provided with the receiving member may be fixed to the horizontal beam. According to this, the number of parts can be reduced, and the construction cost can be reduced.

The receiving member may have legs, and the legs may be fixed to the roof surface. According to this, a space or a fireproof material can be interposed under the receiving member without using a crosspiece or the like.

The upper surface portion of the fireproof material may form the receiving surface portion. According to this, it is possible to obtain a structure in which the receiving surface portion is provided on the roof surface without the receiving member.

A detachment prevention means may be provided to prevent the cable from detaching from the receiving surface portion.

According to the present invention, even when sparks are generated due to damage to the covering of the cable of the solar cell module installed on the roof, poor connection of the connector, etc., it is possible to suppress the outbreak of fire from the roof surface. Play.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which showed the outline of the cross section of the roof structure of embodiment of this invention. FIG. 2 is an explanatory view showing the outline of the wiring of the roof material with the solar cell module used in the roof structure of FIG. 1; It is explanatory drawing which expanded and showed the outline of the cross section of the receiving member and wiring which are used by the roof structure of FIG. 4 is an enlarged perspective view of the receiving member of FIG. 3; FIG. FIG. 10 is a diagram showing another embodiment, and is an explanatory diagram showing an enlarged outline of the cross section of the receiving member and the wiring. FIG. 10 is a diagram showing another embodiment, and is an explanatory diagram showing an enlarged outline of the cross section of the receiving member and the wiring. FIG. 10 is a diagram showing another embodiment, and is an explanatory diagram showing an enlarged outline of the cross section of the receiving member and the wiring. FIG. 10 is a diagram showing another embodiment, and is an explanatory diagram showing an enlarged outline of the cross section of the receiving member and the wiring. It is explanatory drawing which showed the outline of the cross section of the roof structure of other embodiment. 10 is an enlarged perspective view of the receiving member of FIG. 9; FIG. It is explanatory drawing which showed the outline of the cross section of the roof structure of other embodiment. FIG. 12 is an enlarged plan view and side view of the receiving member of FIG. 11;

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the roofing material 1 with solar cell modules used in the roof structure of this embodiment has, as an example, a structure in which the peripheral edge of the solar cell panel section 14 is surrounded by a frame 11. there is The solar cell panel section 14 includes a glass plate section sandwiching a photovoltaic layer, a wiring section for extracting electric power generated in the photovoltaic layer, and the like.

Moreover, a mounting bracket 12 is engaged with a portion of the roof material 1 on the back side of the water side. The mounting bracket 12 is formed with a protruding fixing portion protruding to the water side. This protruding fixing portion is fixed to the horizontal beam 21 by a screw 26 screwed from above on the horizontal beam (tile beam) 21 fixed on the roof surface 2 . In the work of laying the roof material 1, the mounting bracket 12 can be fixed to the horizontal beam 21 with the screw 26 in advance. In this embodiment, the roof surface 2 has a structure in which an asphalt roofing 23 is attached on a sheathing board 22 .

Further, a terminal portion 15 for extracting electric power generated by the solar cell panel portion 14 is provided on the back surface of the roofing material 1 with the solar cell module. Cables 16 for outputting the electric power are drawn out from the terminal portion 15, and connectors 16a are attached to the ends of the cables 16 for easy connection with other cables.

A receiving member 3 made of metal for receiving the cable 16 is attached to the upper surface side of the horizontal beam 21 . The lateral length of the receiving member 3 is made shorter than the lateral length of the roofing material 1 with the solar cell module. can be extended vertically. The receiving member 3 has a fixing plate portion 31 projecting to the underwater side, and is fixed to the upper surface of the horizontal beam 21 substantially parallel to the roof surface 2 . This fixation may be performed with the screw 26 or another screw. The fixing plate portion 31 is formed with a hole through which the screw (26) is inserted.

Further, as shown in FIGS. 3 and 4, the receiving member 3 has an accommodation recess 32 forming a long groove in the girder direction on the water side of the fixing plate portion 31 . The bottom surface of the accommodation recess 32 is formed substantially parallel to the fixed plate portion 31 , and the bottom surface is aligned with the roof surface 2 when the fixed plate portion 31 is fixed to the upper surface of the horizontal beam 21 . It seems that they are positioned substantially parallel to each other. Furthermore, a hemming bent portion 32a is provided at the upper end of the above-water side wall portion of the housing recess 32. As shown in FIG. The bent hemming portion 32a improves the strength of the receiving member 3 and prevents the covering of the cable 16 from being damaged.

In this embodiment, the receiving member 3 is formed by bending a steel plate. The thickness of the steel plate is approximately the same as the thickness of the mounting bracket 12, for example. The upper side surface of the bottom portion of the housing recess 32 functions as a receiving portion that contacts and receives the cable 16 . The bottom of the housing recess 32 is separated from the roof surface 2 between the roof material 1 and the roof surface 2 to form a space with the roof surface 2 .

With the above configuration, direct contact between the cable 16 and the roof surface 2 is prevented by the receiving member 3 having the receiving surface portion for receiving the cable 16 of the solar cell module. Therefore, the spark generated from the cable 16 is suppressed from reaching the roof surface 2, and the outbreak of fire from the roof surface 2 can be suppressed. Further, since the receiving surface portion exists between the roof surface 2 and the roof surface 2 on the lower side of the roof material 2 with a space intervening therebetween, fire outbreak due to the receiving surface portion of the receiving member 3 being heated by the spark is also suppressed. can.

Further, if the receiving member 3 has the housing recess 32 for housing the cable 16, the installation work of the cable 16 can be facilitated.

Further, if the receiving member 3 is made of metal, it is easy to process, so that the production cost of the receiving member 3 can be reduced and the installation work can be facilitated.

Further, if the receiving member 3 is fixed to the horizontal beam 21 on the roof surface 2, the height of the horizontal beam 21 can be utilized to provide a space below the receiving member 3. become easier.

It should be noted that the receiving member 3 may be formed as a simple flat plate-shaped portion without the accommodating recess. Moreover, the flat plate portion may be positioned parallel to the roof surface 2 or may be positioned horizontally. Further, a hole is formed in the upper part of the above-mentioned flat plate-shaped part and the upper part of the side wall part above the water of the accommodation recess 32, and a binding band passed through the hole on the tip end side is applied to the cable 16, and the tip end of the binding band is applied. can be passed through the locking portion of the binding band to prevent the cable 16 from falling off. In other words, the binding band can form separation preventing means for restraining the cable 16 so as to be held on the receiving surface portion side. Of course, the cable 16 may be constrained to the accommodation recess 32 or the flat plate portion without using the binding band. It is also possible to prevent the cable 16 from coming out of the accommodation recess 32 by partially covering the upper opening of the accommodation recess 32 with the binding band or the like. By combining with a binding band or the like, it is possible to form a detachment prevention means that encloses the cable 16 so as to fasten it to the receiving surface portion side.

Further, in the above example, a space is interposed under the receiving member 3, but a fireproof material may be interposed instead of the space. Here, the fireproof material includes incombustible material, quasi-incombustible material and flame-retardant material. Preferably, as the fireproof material, a noncombustible material such as rock wool, which has higher heat insulation than metal, is used.

Next, another embodiment will be described based on FIG. In this embodiment, the receiving member 3A is formed integrally with the mounting bracket 12, and the portion of the mounting bracket 12 protruding above the water functions as a fixing plate portion 31 for the receiving member 3A. The receiving member 3A is fixed to the roof surface 2 by fixing the fixing plate portion 31 to the horizontal beam 21 with screws 26. As shown in FIG. When the receiving member 3A is integrally provided with the roofing material 1 in this manner, the number of parts can be reduced, and the construction cost can be reduced. Alternatively, the receiving member 3A may be simply a flat plate-shaped portion without a housing recess, and the cable 16 may be bound on the flat plate-shaped portion with a binding band. Further, a hole for passing the banding band or the like may be formed in the flat plate portion. Of course, the receiving member 3 can also be shaped like a flat plate.

Next, another embodiment will be described based on FIG. In this embodiment, a receiving member 3B is used. The receiving member 3B is elongated in the direction of the girder, has a housing recess 32 for housing the cable 16, and has legs 33 on the water side and the water side. A mounting piece is formed on the lower end side of each leg 33, and the receiving member 3B is fixed to the roof surface 2 with a screw 27 screwed into the mounting piece. A space is formed between the roof surface 2 and the lower side of the housing recess 32 by the leg portion 33 . According to this, even without using the horizontal beam 21, a space or a fireproof material can be interposed under the receiving member 3B.

In addition, in the receiving member 3B, the accommodation recess 32 and the leg portion 33 are formed by bending one sheet of steel plate, thereby reducing the cost. Further, even when the receiving member 3B is used, the binding band may be used to prevent the cable 16 from coming off. Instead of the binding band, an adhesive tape or the like may be attached to the receiving member 3B above the cable 16 so as to straddle the accommodation recess 32. As shown in FIG. The adhesive tape or the like also serves as detachment prevention means for restraining the cable 16 so as to be held on the receiving surface side.

Next, another embodiment will be described based on FIG. In this embodiment, a receiving member 3C is used. The receiving member 3C is formed elongated in the direction of girders, has a housing recess 32 for housing the cable 16, and has a covering piece 34 for narrowing the upper opening of the housing recess 32. It has a configuration that does not require a band. The covering piece portion 34 also forms a detachment prevention means that encloses the cable 16 so as to be fastened to the receiving surface portion side. In addition, in the receiving member 3C, the accommodation recess 32 and the covering piece 34 are formed by bending one steel plate, thereby reducing the cost. Between the receiving member 3C and the roof surface 2, a fireproof material 4 elongated in the girder direction is interposed. Here, the fireproof material 4 includes an incombustible material, a semi-incombustible material, and a flame-retardant material. For example, as the fireproof material 4, a noncombustible material such as a hard rock wool board, a glass wool board, a cement board, etc., which has higher heat insulation than metal can be used. Screw insertion holes are formed at predetermined intervals in the bottom plate portion of the housing recess 32. By screwing screws 28 passed through the screw insertion holes into the roof surface 2, the receiving member 3C and the fireproof material 4 are separated from each other. is fixed on the roof surface 2.

Next, another embodiment will be described based on FIG. In this embodiment, the receiving surface portion for receiving the cable 16 of the solar cell module is formed by the fireproof material 4 elongated in the girder direction. That is, the upper side surface portion of the fireproof material 4 forms the receiving surface portion. This makes it possible to easily obtain a structure in which the receiving surface portion is provided on the roof surface 2 with the fireproof material 4 interposed therebetween. The cable 16 can be fastened to the fireproof material 4 using a binding band or the like. The binding band or the like also forms a detachment preventing means for restraining the cable 16 so as to be held on the receiving surface side. The fireproof material 4 can be fixed to the roof surface 2 using the screws 28 . For the fireproof material 4, a hard rock wool board, a glass wool board, a cement board, or the like, which has higher heat insulation than metal, can be used as in the above embodiment.

Another embodiment will now be described with reference to FIGS. 9 and 10. FIG. In this embodiment, the roof structure is related to the roof material 1A with the solar cell module, which is arranged on the most eaves side of the roof surface 2. As shown in FIG. The installation fixing portion 17 that engages the roof material 1A is placed on the substantially horizontal upper surface of the horizontal rail (Hirokomai) 21A arranged on the roof surface 2, and is fixed to the horizontal rail 21A with screws 29. As shown in FIG. A through hole through which the screw 29 is inserted is formed in the installation fixing portion 17 . A receiving member 3D for receiving the cable 16 is attached to the upper surface side of the horizontal beam 21A. The receiving member 3D has a fixing plate portion 31A projecting to the underwater side, and is fixed to the substantially horizontal upper surface of the cross beam 21 which is not parallel to the inclination of the roof surface 2. As shown in FIG. This fixing may be performed with the screw 29, or may be performed with another screw. A hole through which the screw (29) is inserted is formed in the fixing plate portion 31A. The bottom surface of the housing recess 32 of the receiving member 3D is formed non-parallel to the fixing plate portion 31A. It is positioned substantially parallel to the roof surface 2 .

A hemming bent portion 32a is provided at the upper end of the above-water side wall of the housing recess 32. As shown in FIG. The bottom portion of the housing recess 32 is separated from the roof surface 2 between the roof material 1 and the roof surface 2 and positioned with a space interposed with respect to the roof surface 2 .

Next, another embodiment will be described based on FIGS. 11 and 12. FIG. In this embodiment, a receiving member 3E is used. The receiving member 3E is formed as a piece member elongated in the direction of girders, and has a cover piece 34 that narrows the upper opening of the accommodation recess 32 that accommodates the cable 16. To prevent the cable 16 from detaching from the receiving surface. Further, the receiving member 3E is provided with leg portions 33A on both end sides in the column direction. A mounting piece is formed on the lower end side of each leg 33A, and the receiving member 3E is fixed to the roof surface 2 by a screw (not shown) screwed into this mounting piece. A space is formed below the housing recess 32 by the leg portion 33A. In addition, in the receiving member 3E, the receiving recess 32, the covering piece 34, the mounting piece and the leg 33A are formed by cutting and bending a single steel plate.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope.

1: Roofing material 1A with solar cell module : Roofing material 2 : Roof surface 3 : Receiving member 3A : Receiving member 3B : Receiving member 3C : Receiving member 3D : Receiving member 3E : Receiving member 4 : Fireproof material 11 : Frame 12 : Mounting bracket 14 : Solar cell panel portion 15 : Terminal portion 16 : Cable 16a : Connector 17 : Installation fixing portion 21 : Horizontal beam 21A : Horizontal beam 22 : Roofing board 23 : Asphalt roofing 26 : Screw 27 : Screw 28 : Screw 29 : screw 31 : fixing plate portion 31A : fixing plate portion 32 : accommodation recess 32a : hemming bent portion 33 : leg portion 33A : leg portion 34 : covering piece portion

Claims (6)

In a roof structure in which a roofing material with a solar cell module is arranged on the roof surface,
a receiving member having a receiving surface portion for receiving the cable of the solar cell module;
a crossbar fixed on the roof surface;
a mounting bracket that is a member for mounting the roof material on the roof surface and is fixed on the horizontal beam with a screw;
and
The receiving member has a fixed plate portion positioned on the underwater side with respect to the receiving surface portion. A roof structure characterized in that it exists through a space between it and a roof surface. 2. The roof structure according to claim 1, wherein said receiving member has a receiving recess for receiving said cable. 3. The roof structure according to claim 1, wherein said receiving member is made of metal. The roof structure according to any one of claims 1 to 3, wherein the receiving member is a separate member from the mounting bracket and is cantilever supported by screwing the screw. . 4. The roof structure according to any one of claims 1 to 3, wherein said receiving member is provided integrally with said mounting bracket. 6. The roof structure according to any one of claims 1 to 5, further comprising detachment preventing means for preventing the cable from detaching from the receiving surface portion.

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