JP2006274659A - Mounting structure for photovoltaic power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for a photovoltaic power generator which is set on a roof in a manner imbricately overlapping solar battery modules, the mounting structure overcoming inconveniences such as interference of the modules with roof tiles, an increased gap between the roof tile and the module, and degraded appearance of the roof, by making the height of the solar battery module variable at an eaves edge. <P>SOLUTION: The photovoltaic power generator is formed of the solar battery modules, bearing members, and bearing fittings. Each bearing member is formed of a ridge-side fixing portion, and a guide portion forming an inclination angle with respect to a roof surface, and each bearing fitting is formed of a fixing portion, a support portion, and a bearing portion. Then by engaging the bearing portion of the bearing fitting with the guide portion, and by changing a distance between the ridge-side fixing portion and the bearing fitting, the height of the solar battery module at the eaves edge is made variable. Further by forming steps on an inclined surface of the guide portion, the bearing portion of the bearing fitting is stably fixed. Besides by forming a plurality of engaging portions different in length on the bearing fitting, a height adjustable range of the mounting structure is extended. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention mainly relates to an installation structure of a solar power generation apparatus that is installed in a tiled manner on an inclined roof.

  In recent years, with increasing interest in global environmental problems, new energy technology using natural energy has attracted attention. As one of them, interest in systems using solar energy is high, and in particular, the spread of solar power generation systems to houses has been accelerated.

  The solar power generation system reduces the electric load of the home by converting solar energy into electric power by using a solar cell as a main component. In a house, since a solar cell module is often disposed and used on the roof of a house, various structures for mounting the solar cell module on the roof have been devised.

  Currently, there are two types of mounting structures, one is a roof-standing system that is often used for mounting on existing houses, and the roof is made of roofing materials such as tiles and sheet metal. A metal fitting is attached to a rafter and a mounting structure called a rack system is installed thereon, and a solar cell module is attached thereto.

The other is a solar power generation system to which a roof material type solar cell module is attached, and this is generally performed when a roof material is replaced with a newly built roof or a renovation. The roof material type solar cell module is a solar cell module provided with a roof material function, and is designed to have the same ability as the roof material in terms of rain and fire resistance. In addition, it is a method that is currently attracting attention because its appearance is more beautiful than the roof-standing system in harmony with the roofing material.

  FIG. 1 shows a typical rooftop residential solar power generation system as an example. The solar power generation system J includes a solar cell module 11 that converts sunlight into electric energy, a roof mount for fixing the solar cell module 11 on a roof 9 that is attached to the back surface of the solar cell module, although not shown in detail. It is composed of a connection box 12 that collects electric energy generated by the solar cell module, and a power conditioner 13 that converts DC power into AC power. Usually, the DC power generated by the solar cell module is put into the connection box 12 by the power transmission cable 8. Then, after the series system of a plurality of solar cell modules is connected in parallel in the junction box 12 and aggregated, it is converted into AC power by the power conditioner 13 and used as household power, or the amount of power generation is used at home. If it is greater than the power, it is sold to the commercial power grid of the power company.

  FIG. 2 shows the structure of a general solar cell module 11. A light-transmitting substrate 14 such as tempered glass is provided on the surface on which sunlight is incident, and the solar cells 16 are wrapped with a filler 15 such as ethylene vinyl acetate (EVA), and the back surface is made of a material such as PET. The back sheets 17 are pasted and bonded together by a crosslinking process. A frame member 18 made of aluminum or the like is provided around it as a reinforcing member, and the power generation unit is protected and attached to the rack system described above. Moreover, the junction box 19 and the cable for taking out the electric power which the photovoltaic cell generated are provided in the back surface, ie, non-light-receiving surface, of a solar cell module.

  By installing a plurality of such solar cell modules 11 on the roof mount described above to form an array, the solar power generation device 1 as shown in FIG. 1 is completed.

Moreover, in the solar power generation system using the roof material type solar cell module 202 as shown in FIG. 3A, the roof material type solar cell module 202 is tiled on the roof surface 201 of the roof 9 of the house. The roof structure type solar cell module 202 includes a solar cell module 203, a support member 204, a guide portion 207, and a ridge-side fixing portion 206. ), The guide portion 207 attached to the back surface of the support member 204 is engaged with the engagement portion of the support metal fitting 205 fixed on the roof surface 201 with screws or nails, so that the roof material type solar cell module The tile 202 is fixed in a tiled state in a state of being floated on the roof tile 210 at the front stage. An installation structure has been proposed in which the upper portion of the support fitting 205 is joined to such a guide portion 207 (see, for example, Patent Document 1).
JP 2004-27734 A

  However, in the installation structure of the solar power generation device described above, the height from the roof surface to the top surface of the tile is uniform, for example, when the solar power generation device is installed on the most eaves side and stacked on the roof tile. Therefore, there is a problem that the roof tile and the photovoltaic power generation apparatus mechanically interfere with each other, or a large gap is generated between the roof tile and the photovoltaic power generation apparatus. Specifically, as shown in FIG. 4, in the basic structure of the tiled roof, a vertical pier 208 is constructed on the roof surface 201, a horizontal pier 209 is arranged on the upper part of the vertical pier 208, and the horizontal pier 209 A structure in which a roof tile 210 is arranged at the upper part is general. The height of the upper surface of the roof tile 210 is the thickness of the vertical pier 208, its presence, the thickness of the horizontal pier 209, and the thickness of the tile 210. Therefore, the roof tile 210 and the roof material type solar cell module 202 interfere mechanically as shown in FIG. As shown in FIG. 6, there is a problem that a large gap is generated between the solar cell module 202 and the roof material type solar cell module 202 and rainwater or the like is blown.

  Conventionally, in the case of mechanical interference, as shown in FIG. 7, a support metal spacer 211 is interposed between the support metal 205 and the roof surface 201, or the support metal 205 is replaced with one having a different height. Measures such as were necessary. In addition, when a large gap is generated, a roof tile is obtained by interposing a tile spacer 212 between the tile 210 and the horizontal pier 209, or replacing the horizontal pier 209 with one having a different height, as shown in FIG. Although measures such as adjusting the height of 210 to reduce the gap were necessary, these measures all required the acquisition of new members and the number of man-hours for construction, and the cause of significantly worsening workability Met.

  In addition, there are many cases where the roof surface has an overall distortion called unevenness and the flatness is low. In this case, not only the above-described problem occurs, but also when a plurality of solar power generation devices are installed, The problem arises that the photovoltaic devices are not flush with each other and the appearance is impaired.

  Therefore, the solar power generation device of the present invention has been devised in view of the above-described problems, and the height of the eaves of the solar cell module in the solar power generation device installed in a tiled manner on the roof is installed. It is an object of the present invention to provide an installation structure that can easily solve problems such as interference with roof tiles, increase in gaps, and deterioration in appearance by changing the height.

  In order to achieve the above object, the solar power generation device installation structure of the present invention is configured such that the solar power generation device is constituted by a solar cell module, a support member, and a support fitting, and the support member includes a ridge-side fixing portion, A guide portion having an inclination angle with respect to the roof surface, and the support bracket includes a fixing portion, a support column portion, and a support portion. The support portion of the support bracket is combined with the guide portion, and the ridge side fixing is performed. The height of the eaves of the solar cell module is made variable by changing the distance to the part.

  Moreover, it is set as the structure which has a step-like level | step difference in the inclined surface of the said guide part, and the support part of a support metal fitting is stably fixed.

  Moreover, it is set as the structure which gave the system | strain part of several length to the said support metal fitting, and makes a height adjustment range wider.

  According to the installation structure of the photovoltaic power generation apparatus of the present invention, in the photovoltaic power generation apparatus that is stacked and installed on the roof, the height of the eaves of the photovoltaic power generation apparatus can be varied, It is possible to provide an installation structure that can easily solve problems such as interference with the screen, an increase in gaps, and a decrease in appearance.

  In addition, when the structure having a stepped step on the inclined surface of the guide portion, the height of the eaves of the photovoltaic power generation device can be adjusted step by step, so that the guide portion is a simple inclined surface. When a positive or heavy load due to snow or wind pressure exceeding a certain level is applied to the photovoltaic power generation system, lateral stress in the eaves / ridge direction is generated in the support bracket and guide part, so the support part slips and shifts to the support position. However, if a stepped step is provided on the inclined surface as described above, the frictional resistance can be increased compared to the inclined state, so that the sliding between the support part and the guide part is difficult. Is less likely to occur and the effect of maintaining the support height can be expected.

  Moreover, when it is set as the structure which gave the system | strain part of several length to the said support metal fitting, changing height by selecting the object which a support member mate | combines from a some system | strain part. Is possible. By using this mechanism in combination with the guide portion having the aforementioned inclination angle, it is possible to adjust the eaves height of the solar cell module in a wider range.

Further, when a plurality of such photovoltaic power generation devices are arranged on the roof, even if the roof surface has an overall distortion called unevenness and the flatness is low, the surface positions of the plurality of solar cell modules are And the angle can be adjusted, and the effect of improving the appearance can be obtained.

  EMBODIMENT OF THE INVENTION Below, one Embodiment of the installation structure of the solar power generation device which concerns on this invention is described in detail based on the figure typically illustrated.

  As shown in FIG. 10, the solar power generation device of the present invention is a solar power generation device (minimum unit) in which a supporting member 306 is attached to the lower part of a solar cell module 305, and screws or The fitting portion of the support member 306 is fitted to and fixed to the support fitting 303 fixed with a nail. Hereinafter, each part will be described in detail.

  As shown in FIG. 11A, the support member 306 has a guide portion 308 below the placement portion 36. In this example, the hook portion 37 and the fixing hole 39 for fixing the screw are used as a method for attaching the solar cell module, but both may be screw-fixed or fitted. A ridge side fixing portion 307 is provided on the most ridge side, and is fixed on the roof with screws, nails or the like. FIG. 11B shows a support fitting 303 that fits with the support member 306. The support fitting 303 includes a fixing portion 21, a support portion 22, and a support portion 23. The fixing portion 21 is fixed to the roof surface with screws or nails, and the support portion 23 is inserted into the guide portion 308 of the support member 306. The fixed height of the solar cell module is determined by the height of the portion 22.

  As shown in FIG. 9A, the roof tile 210 or the solar power generation device 300 is installed at the eaves portion on the roof surface 201, and the support fitting 303 is fixed with the support fitting fixing screw 304 in the vicinity of the ridge side of the tile 302. To do. The solar cell module 305 and the support member 306 are integrally fixed before installation. The solar cell module 305 and the support member 306 are overlapped with the roof tile 302 and at the same time, the support portion 23 of the support fitting 303 and the support member 306 are It arrange | positions so that the guide part 308 may join. After that, the ridge side fixing portion 307 of the support member 306 is fixed to the roof surface 201 with the support member fixing screw 311. By doing in this way, the position of the solar cell module 305 is fixed by the support fitting 303 in a state where the eaves portion is suspended in the air.

  FIG. 9B shows a state in which the eaves portion is supported and fixed in a floating state. The guide portion 308 of the support member 306 of the solar power generation device 300 is provided with a fitting portion having an inclination angle with respect to the roof surface 201, and is supported by the support portion 23 of the support fitting 303 at any one of the inclined portions. Yes. Therefore, the standard dimension A, which is an ideal support fixing height at which the photovoltaic power generation apparatus 300 does not interfere with the roof tile 210 in the previous stage and does not generate a large gap, is determined by the height of the support fitting 303. Become. At this time, when the roof tile 201 and the solar power generation device 300 interfere with each other, if the fixing position of the support fitting 303 is moved to the ridge side as shown in FIG. Since it is inclined, the solar power generation device 300 is lifted upward. By refixing in this state, the eaves height of the solar cell module 305 can be increased. In the figure, the description has been made based on an example of interference because the height of the roof tile 210 in the previous stage is higher than the standard dimension A. However, in the case where the roof surface 201 where the support metal fitting 303 is fixed is lower than the surroundings. Even if there is, it is the same. On the other hand, when a large gap is generated between the roof tile 210 and the solar cell module 305, the fixing position of the support fitting 303 is moved to the eave side as shown in FIG. The eaves height of the apparatus 300 can be made lower than the standard dimension A. The same applies to the case where the roof surface 201 where the support metal fitting 303 is fixed is higher than the surrounding area.

  Thus, by moving the fixing position of the support fitting 303 to the ridge side or the eaves side, the height at which the photovoltaic power generation apparatus 300 is fixed with the same support fitting 303 can be changed steplessly.

  Next, another embodiment of the support fitting introduced above will be described. In the support fitting 303 described with reference to FIG. 11B, the support portion 23 is the first support portion, and the support portion 310 similar to the support portion 23 is provided at the end of the fixed portion 21. The length of the fixed portion 21 and the length of the support column 22 are the support fittings 309 that are different. By adopting such a structure having a plurality of mating parts, as shown in FIG. 14, the first support part 23 is provided at one end of the L-shaped support fitting 309 and the second support part 310 is provided at the other end. It is possible to change the height in two ways by selecting which surface of the support fitting 309 is fixed in contact with the roof surface 201 during installation. Specifically, FIG. 14A shows a state in which the support fitting 309 is fixed to the roof surface 201 with the second support part 310 side as a fixed part, and FIG. 14B shows the first support part 23 side as a fixed part. It is in the state. In this example, since the length on the side where the second support portion 310 is present is longer than the side where the first support portion 23 is present, the height of the support portion can be increased during the installation shown in FIG. By using the support fitting 309 and the above-described support member in combination, it is possible to adjust the eaves height of the solar cell module 305 in a wider range.

  Further, as shown in FIG. 15, by providing a stepped step on the inclined surface of the guide portion 38 of the support member 306, the height of the eaves of the photovoltaic power generation apparatus 300 may be adjusted step by step. In this case, if the guide part 38 is a simple inclined surface, when positive / load weight due to snow accumulation / wind pressure exceeding a certain level is applied to the photovoltaic power generation apparatus 300, the support metal and the guide part may be placed sideways in the eave / ridge direction. Since the stress is generated, there is a concern that the support part 23 slips and the support position shifts and it is difficult to keep the height constant. However, as described above, if a stepped step is provided on the inclined surface, the slope is inclined. Since the frictional resistance can be made larger than that in the state, the support portion 23 and the guide portion 38 are unlikely to slip, and an effect that the support height can be maintained can be expected.

  Further, in the above-described embodiment, the solar power generation apparatus 300 and the support metal fitting 303 are applied to the rear stage after the roof tiles 210 are arranged on the eaves side. It may be applied in a plurality of stages including the case of stages. Thus, by using the installation structure of the photovoltaic power generation apparatus of the present invention at various places on the roof, a plurality of roof tiles can be obtained even when the roof surface 201 has an overall distortion called unevenness and the flatness is low. Even if solar power generators are combined, the surface position and angle can be adjusted, and the appearance can be improved.

It is the perspective view which showed the general photovoltaic power generation system for roof-mounted houses. It is sectional drawing which showed the structure of the general solar cell module with a frame. (A), (b) is sectional drawing which showed the roof type solar power generation system of the prior art, (b) is the enlarged view which expanded the eaves part. It is sectional drawing which shows a mode that the conventional roof material type solar cell module was installed on the tile roof. It is sectional drawing which shows a mode that it interferes with a roof tile in installation of the conventional roof material type solar cell module. It is sectional drawing which shows a mode that the clearance gap has arisen between roof tiles in installation of the conventional roof material type solar cell module. It is sectional drawing which shows a mode that height is adjusted with a support bracket spacer in installation of the conventional roof material type solar cell module. It is sectional drawing which shows a mode that the height of a roof tile is adjusted in order to reduce a clearance gap in installation of the conventional roof material type solar cell module. (A), (b) is sectional drawing which showed typically one Embodiment of the installation structure of the solar power generation device which concerns on this invention, (b) is a partially expanded view of the eaves part. It is the perspective view which showed typically one Embodiment of the installation structure of the solar power generation device which concerns on this invention. (A), (b) is a perspective view showing typically one embodiment of a support member and a support metal fitting concerning the present invention. It is sectional drawing which showed typically the Example which raises the installation height of the solar power generation device which concerns on this invention. It is sectional drawing which showed typically the Example which lowers the installation height of the solar power generation device which concerns on this invention. (A), (b) is sectional drawing which showed typically a mode that height was changed with the direction of a support metal fitting in the installation structure of the solar power generation device which concerns on this invention. It is sectional drawing which showed typically other embodiment of the installation structure of the solar power generation device which concerns on this invention.

Explanation of symbols

1: Solar power generation device 8: Power transmission cable 9: Roof 11: Solar cell module 12: Connection box 13: Power conditioner 14: Transparent substrate 15: Filler 16: Solar cell 17: Back sheet 18: Frame material 19 : Junction box 21: Fixed part 22: Supporting part 23: Support part (first support part)
36: Placement part 37: Hook part 38: Guide part 39: Fixing hole 201: Roof surface 202: Roof material type solar cell module 203: Solar cell module 204: Support member 205: Support metal fitting 206: Building side fixing part 207: Guide section 208: Vertical pier 209: Horizontal pier 210: Roof tile 211: Support bracket spacer 212: Tile spacer 300: Solar power generation device 303: Support bracket 304: Support bracket fixing screw 305: Solar cell module 306: Support member 307: Building side fixing part 308: guide part 309: support metal fitting 310: second support part 311: support member fixing screw J: photovoltaic power generation system

Claims (3)

A solar power generation device installation structure that is installed in a tiled manner on a roof, the solar power generation device including a support member and a solar cell module placed on the support member, and a roof And a support fitting that supports the support member, the support member having an inclined surface that is inclined with respect to a roof surface, and a guide portion that is supported by the support fitting. Photovoltaic generator installation structure. The solar power generator installation structure according to claim 1, wherein the inclined surface of the guide portion has a stepped step. The installation structure of the solar power generation device according to claim 1 or 2, wherein a height of the solar power generation device can be adjusted by shifting a support position between the guide portion and the support metal fitting. .

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