JP2004263544A - Roof fitting structure of solar battery module, module unit, solar battery structure, roof fitting method, and module unit replacement method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof fitting structure of a solar battery module, simple in structure to decrease the number of parts, and constructed simply and efficiently, a module unit, a solar battery structure, a roof fitting method and a module unit replacement method. <P>SOLUTION: This roof fitting structure includes a module frame 10 fitted to four sides of a quadrangular solar battery module M to laying the solar battery module M on an inclined roof. The module frame 10 has a pair of a first frame part and a second frame part opposite to each other, and another pair of a third frame part and a fourth frame part opposite to each other. The third frame part and the fourth frame part respectively have a water leakage preventing side projected outward and extended in the longitudinal direction of the frame part. The solar battery module M includes a module unit U provided with the module frame 10 and a fixing member for fixing the module unit U to the lateral rail 3 of the roof. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a solar cell module roof mounting structure, a module unit, a solar cell structure, a roof mounting method thereof, and a module unit replacement method.

FIG. 15 is a schematic perspective view showing a conventional module unit in which a module frame is attached to a solar cell module, FIG. 16 is an exploded perspective view of the conventional module unit, and FIG. It is a schematic perspective view explaining the conventional attachment method attached on. The solar cell module M has a super straight structure in which a plurality of solar cells 100 arranged in a matrix are electrically connected in series or in parallel by an interconnector or the like. On the front surface side of the solar cell 100, a white strengthened glass plate 102 is laminated via a filler 101 formed in a thin plate shape by a transparent resin or the like. In addition, a back film 104 is laminated on the back surface side of the solar cell 100 via a filler 103 formed in a thin plate shape by a transparent resin. As described above, the solar cell 100 is sandwiched by the white strengthened glass plate 102 and the back film 104 with the fillers 101 and 103 interposed therebetween, and a solar cell module M having a rectangular flat plate shape as a whole is configured. As shown in FIG. 15, a terminal box 105 is provided on the back surface of one of the left and right side ends of the solar cell module M, and a pair of electric cables 106 are connected to the terminal box 105. . Then, the frame body 110 is attached module unit U ₁ is configured on the periphery of the solar cell module M.

  The frame body 110 includes a front frame portion 111 and a rear frame portion 112 attached along the front and rear edges of the solar cell module M, and a left frame portion 113 and a right side attached along the left and right edges of the solar cell module M. A frame 114 is provided, and these frames 111, 112, 113, and 114 are respectively fitted to the periphery of the solar cell module M and connected by screws 115. Note that a cushioning material is provided between the front frame portion 111 and the rear frame portion 112 and the solar cell module M.

To give such a solar cell module module unit frame 110 is attached to M U ₁ on the roof of the house, as shown in FIG. 17, the roofing material 120 made of a metal plate on the upper surface of the not shown sheathing provided, set up a platform 121 consisting of a plurality of the vertical bar 121a and a plurality of rungs 121b thereon, placing the module unit U ₁ to the top of the pedestal 121, an electric cable 9 to wire, the module unit together with the cover 125 the ridge side and eaves side of the U ₁ it was attached by fixing to the frame 121 by bolts from above (for example, see Patent Document 1).

However, such a conventional roof mounting structure of the solar cell module M has the following problems.
(1) The roof mounting structure of the conventional solar cell module M has insufficient water leakage prevention and non-combustibility measures, so that the solar cell module M cannot be directly mounted on the roof base plate. provided roofing material 120 to secure the waterproof property and nonflammable, and must be installed pedestal 121 for fixing the module unit U ₁ on the roof material 120, further module unit U ₁ to the frame 112 Since the fixing cover 125 and a large number of bolts 126 are required, the mounting structure is complicated and the number of components is increased, so that the construction time is long and the cost is high.
(2) At the time of installation, the worker may damage the roofing material 120, and it is necessary to connect the frames 110 of the adjacent solar cell modules M with an earth cable, which requires time and effort for earth wiring. At this time, there is a possibility that the frame 110 may be damaged.
(3) Since the solar cell module M is mounted on the gantry 112, the surface of the solar cell module M is higher than the surrounding tiles, and the appearance is impaired.

JP-A-11-324259

  The present invention has a simplified structure, a reduced number of parts, and a solar cell module roof mounting structure, a module unit, a solar cell structure, a roof mounting method, and a module unit replacement that can be easily and efficiently installed. It is an object to provide a method.

Thus, according to the present invention, there is provided a roof mounting structure provided with a module frame for laying a solar cell module on an inclined roof, which is mounted on four sides of a rectangular solar cell module,
The module frame includes a pair of first and second frame portions facing each other and another pair of third and fourth frame portions facing each other,
A roof mounting structure for a solar cell module is provided, wherein the third frame portion and the fourth frame portion each have a water leakage prevention side projecting outward and extending along the length of the frame portion.
According to another aspect of the present invention, there is provided a module unit including a quadrangular solar cell module and a module frame in a roof mounting structure of the solar cell module mounted on the solar cell module. It is possible to provide a solar cell structure provided with a fixing member for fixing the solar cell structure to a crosspiece in a direction, a method of mounting the solar cell structure on a roof, and a method of replacing a module unit.

  ADVANTAGE OF THE INVENTION According to this invention, a solar cell module can be laid along with a roofing material on a roof with a simple structure, and leakage of rainwater between the module units or between the left and right sides of the module unit and the roofing material is prevented by a water leakage prevention side. Prevention is possible.

In the solar cell module roof mounting structure of the present invention,
The first frame portion is a front frame portion arranged on the eaves side at the lower end of the slope of the roof,
The second frame portion is a rear frame portion arranged on the ridge side at the upper end of the slope of the roof,
The third frame portion is a left frame portion arranged on the left side with respect to the slope of the roof,
The fourth frame portion is a right frame portion arranged on the right side with respect to the slope of the roof,
In the state where the module units in which the module frames are attached to the solar cell modules are laid on the roof one after the other or adjacently to the roofing material,
The rear frame overlaps with the front frame or the roofing material of the module unit adjacent to the ridge side,
The water leakage prevention side of the left side frame part overlaps below or above the water leakage prevention side of the right side frame part of the module unit adjacent to the left side or the right edge of the roofing material,
The water leakage prevention side of the right side frame portion is configured to overlap above or below the water leakage prevention side of the left side frame portion of the module unit adjacent to the right side or the left edge of the roofing material.

That is, when only a plurality of module units or a plurality of module units are laid on a roof together with a roofing material, a module frame attached to each solar cell module has a water leakage prevention side (a lower weight receiving side or An upper weight side is provided, and a water leakage prevention side (upper weight side or lower weight receiving side) is provided in the right frame portion. This prevents rainwater from leaking between adjacent module units or between module units and a roofing material in the left-right direction of a plurality of solar cell modules laid on the roof in the front-rear and left-right directions. In (direction), the eaves side of the roofing material or the module unit is placed on the ridge side of the module unit or the roofing material in the front row, so that leakage of rainwater is prevented.
In this case, depending on the type and shape of the roofing material, the module frames of the module units laid at positions adjacent to the roofing material on the left and right sides have upper and lower weight receiving sides on the left frame portion and the right frame portion. Can be selected, or the same overlapping side can be provided in the left frame portion and the right frame portion. For example, in the case of using a roofing material (for example, a flat tile or a deformed tile) having upper and lower overlapping portions at left and right ends, a lower weight is attached to a left frame portion and a right frame portion of a module unit adjacent to the upper overlapping portion of the tile. A receiving side is provided, and an upper weight side is provided in the left frame portion and the right frame portion of the module unit adjacent to the lower overlapping portion of the tile. When a roofing material such as a tile or a slate having no upper and lower overlapping portions at the left and right ends is used, a lower weight receiving side is provided in a left frame portion and a right frame portion adjacent to the roofing material. Further, when the module units are adjacent to each other on the left and right, one of the adjacent left frame portion and right frame portion may be set as the upper weight side, and the other may be set as the lower weight receiving side.
With this configuration, the module unit can be mounted on the left and right cross-sections of the roof board (so-called roof tile) without installing a metal roofing material (see FIG. 17) for preventing flooding, which was conventionally required. Can be attached directly to the bar. Therefore, in the present invention, a metal roofing material for preventing inundation and a mount for fixing the solar cell module to the roofing material are not required, and the number of parts is greatly reduced, and the mounting structure is simplified, Construction can be performed efficiently and in a short time, and construction costs are greatly reduced.
Here, in the present invention, the left-right direction is defined based on the state of the roof viewed from the eaves side, the eaves side is defined as the front, and the ridge side is defined as the rear.

Also, when installing the module units in multiple rows before and after, it is necessary to fix the front frame part and the rear frame part to the roof tiles for the eaves side (front row) module unit. For the ridge side module unit, if only the rear frame part is fixed to the roof tile, the front frame part will be hooked on the rear frame part of the module unit in the front row, and the front and rear multiple solar cell modules will be connected Become. Therefore, it is possible to reduce the number of fixing fittings such as wood screws for fixing each module unit to the roof tile, and it is possible to perform the construction efficiently. Furthermore, when a metal module frame is used, the module frames of the front and rear module units are engaged with each other to be in an electrically connected state. Therefore, one module unit in the rear row is connected to two module units in the front row. By installing the module units so as to straddle them, the module frames of all the front, rear, left and right module units are electrically connected. This eliminates the need for ground wiring between the module frames. For example, it is only necessary to connect the ground cable to only the module frame on one end side of the last row, and the ground wiring work can be completed in a short time.
In addition, by laying the module unit itself as a roofing material on a roof tile roof tile, the surface of the solar cell module becomes almost the same height as the surface of the roofing material such as surrounding tiles and slate, etc. In addition, a sense of unity with the surrounding roofing material is obtained, and the aesthetic appearance of the roof is not impaired. The length of the module unit in the left-right direction is set to be substantially equal to the length in the left-right direction of a plurality of roofing materials (for example, flat tiles) stacked side by side, and the length of the module unit in the front-rear direction is set to It is preferable to set the length substantially equal to the length of the roofing material in the front-rear direction in terms of design and ease of roofing.

In the present invention, the front frame portion has a front hook side on the lower surface side thereof, and the rear frame portion is disposed on the upper surface side thereof and engages with the front hook side of the module unit adjacent to the ridge side in the front-rear direction. It may have a rear hook side.
With this configuration, when the rear row module unit is installed on the ridge side of the eaves side front row module unit, the rear row module unit is pushed up to the ridge side, so that the front hook side is the front row module frame. Can be naturally hooked to the rear hooking side, and in the hooked state, the eaves side frame of the module unit in the rear row can be overlaid on the rear frame section of the module unit in the front row, so the module unit by strong wind There is no possibility that the eaves side floats to create a gap.

In the present invention, further comprising a fixing member for fixing the module frame to the crosspiece on the roof in the left-right direction, the rear frame portion of the module frame has a projecting side projecting forward on the lower surface thereof,
The fixing member includes a plurality of fixing brackets, a front fixing tool that can be hooked in a front and rear direction with a front hooking side of a module frame, and a rear fixing tool that can be hooked in the front and rear direction with the protruding side of a rear frame portion.
The front fixture has a hole through which the fixing bracket is inserted, and a left and right direction through a roofing material with a fixing metal inserted through the hole and a fixing metal insertion hole provided in the roofing material. Fixed on the crosspiece
The rear fixture has a hole through which the fixture is inserted, is mounted on a left-right crossbar in a state of being engaged with the protruding side of the rear frame, and allows the fixture to be inserted through the hole. You may make it fix to a crosspiece of a left-right direction.
According to this structure, the module unit can be easily and reliably fixed to the roof tile bar of the roof with fixing hardware such as nails or screws in the same manner as a roofing material such as a tile. At this time, the front fixing device can be fixed to the roof tile from above the roofing material by using the fixing fitting insertion hole (so-called nail hole) of the roofing material, and the front catching side of the frontmost module unit can be fixed. Has a function as a projection for engaging the front side frame unit of the frontmost module unit with the fixing bracket, and it is not necessary to fix the front frame unit to the roof tile, and at the time of replacement, the frontmost module unit of the frontmost module unit is replaced. It can be easily removed.

In the present invention, the first frame portion, the second frame portion, the third frame portion, and the fourth frame portion are respectively divided, and the module frame further includes a screw for connecting and assembling these frame portions. It may be.
With this configuration, the module frame can be easily manufactured for each frame portion. In addition, the module frame can be easily attached to the solar cell module, and when the module frame is damaged, it can be easily disassembled and replaced.

  In the present invention, the front hook side may be detachably attached to the front side frame portion from the front with a screw, so that the screw can be easily removed, and the front hook side can be removed. Thus, a desired module unit laid on the roof can be replaced.

  In the present invention, the module frame may further include a decorative cover detachably attached to the front frame portion to cover the front end surface, whereby the eaves side of the plurality of module units laid on the roof may be provided. It is possible to obtain a sense of unity between the end and the eaves end of the surrounding roofing material, and it is possible to hide the mounting screw on the front hooking side, so that the appearance is not spoiled.

  In the present invention, the module frame may be further provided with a reinforcing member arranged on the back surface side of the solar cell module and connecting the first frame portion and the second frame portion. It is possible to prevent rattling of the module frame attached to the vehicle and rattling of the solar cell module attached to the roof. In addition, it is possible to prevent the first frame portion from being deformed when snow falls on the roof during snowfall.

  In the present invention, the rear fixing device may be formed to have a shorter length than the rear frame portion of the module frame, whereby the air permeability between the module unit and the base plate becomes good, and the solar cell The abnormal temperature rise of the module can be suppressed, and the wiring of the electric cable of each solar cell module can be passed beside each of the rear fixtures, thereby facilitating the wiring work.

  In the present invention, the module frame may further include a foamed resin portion interposed between the solar cell module and the module frame, thereby preventing rainwater from entering the gap between the solar cell module and the module frame. As a result, it is possible to reliably prevent water from entering the roof. Further, the foamed resin portion also functions as a cushioning material when the module frame is attached to the solar cell module, so that the solar cell module is not damaged.

Next, the module unit of the present invention will be described.
The module unit of the present invention includes a rectangular solar cell module and a module frame of the above-described solar cell module roof mounting structure mounted on the solar cell module.
According to this module unit, if it is packed and stored in a warehouse of a maker or a construction company, it can be carried to the construction site as it is and the roofing work can be performed immediately, so that the workability is excellent.
The solar cell module may be a square, a rectangle, a parallelogram, or a trapezoid. In general, a rectangular module having a large production amount is used.
Further, the solar cell module may be one in which a back film containing a metal foil such as steel or aluminum is adhered to the back surface thereof, whereby the solar cell module has a non-combustible structure, which is more preferable as a roof material. It becomes.

The solar cell structure of the present invention includes a module unit including a rectangular solar cell module and a module frame attached to the solar cell module, and a fixing member for fixing the module unit to a crosspiece on the roof in the left-right direction. ,
The module frame,
A front frame located on the eaves side at the bottom of the roof slope,
A rear frame portion located on the ridge side of the upper end of the roof slope,
A left frame portion having a water leakage prevention side that is arranged on the left side with respect to the slope of the roof, protrudes outward, and extends along the frame portion longitudinal direction,
A right side frame portion is disposed on the right side with respect to the slope of the roof, has a water leakage prevention side protruding outward, and extending along the frame portion longitudinal direction,
The front side frame portion has a front hook side on its lower surface side,
The rear frame portion is disposed on the upper surface side, is positioned on the front hook side of the front hook frame of the adjacent module frame, and engages in the front-rear direction, and a protruding side projecting forward on the lower surface. Has,
The left frame portion and the right frame portion each have a water leakage prevention side projecting outward and extending along the frame portion longitudinal direction,
The fixing member,
A plurality of fixtures, a front fixture that can be engaged in the front-rear direction with the front hook side of the module frame, and a rear fixture that can be engaged in the front-rear direction with the protruding side of the rear frame portion,
The front fixture has a hole through which the fixing bracket is inserted, and a fixing bracket inserted through the hole and the fixing bracket insertion hole provided in the roofing material. It is fixed to the upper left and right crosspiece,
The rear fixture has a hole through which the fixture is inserted, is mounted on a left-right crossbar in a state of being engaged with the protruding side of the rear frame, and allows the fixture to be inserted through the hole. It is configured to be fixed to the crosspiece in the left and right direction,
Furthermore, in a state where the module units in which the module frames are attached to the solar cell modules are laid on the roof in front and rear and left and right of each other or adjacent to the roofing material,
The rear frame overlaps with the front frame or the roofing material of the module unit adjacent to the ridge side,
The water leakage prevention side of the left side frame portion overlaps the lower or upper part with the water leakage prevention side of the right side frame portion of the module unit adjacent to the left or the right edge of the roofing material,
The water leakage prevention side of the right side frame portion is configured to overlap with or below the water leakage prevention side of the left side frame portion of the module unit adjacent to the right or the left edge of the roofing material.

  According to this solar cell structure, when laying a plurality of solar cell modules vertically and horizontally on the roof, a front fixing member for fixing the eaves side of the module unit in the front row is nailed through a roofing material. If it is fixed to the roof tile with screws or other fixing brackets, the eaves side of the module unit in the front row can be hooked to the front fixture, and only the ridge side can be fixed to the roof tile with the rear fixture with the fixing bracket. It can be installed efficiently.

The method of mounting the module unit of the present invention on a roof is a method of mounting the solar cell structure on a roof,
The front fixture is fixed to the left and right rails of the roof from above the roofing material with fixing brackets, and the rear fixture is engaged with the projecting side of the rear frame of the module frame. The hook side is hooked on the front fixture, and the rear fixture is mounted on the crosspiece in the left-right direction and fixed with the fixture.
According to this roof mounting method, similarly to the above-described solar cell structure, when laying a plurality of solar cell modules vertically and horizontally on the roof, a front fixture for fixing the eaves side of each module frame in the front row. Is fixed to the crosspiece with nails or screws via a roof tile, the eaves side of the frontmost module unit can be hooked to the front fixture, and only the ridge side can be fixed with the rear fixture by the rear fixture. It can be fixed efficiently with nails or screws, and can be mounted efficiently.

  In the roof mounting method of the present invention, when laying the module units on the roof in a plurality of front and rear rows, the rear fixture is engaged with the projecting side of the rear frame portion of the module unit in the ridge side rear row, and The front hook side of the front frame portion of the module unit can be hooked on the rear hook side of the module unit in the front row, and the rear fixing tool on the rear row side can be mounted on the left-right rail and fixed with the fixing bracket. In other words, when installing the module units in the second and subsequent rows, the eaves side only needs to be hooked on the rear hook side of the module units in the front row, and only the ridge side is fixed to the tile bar with nails or screws with the rear fixture. The module units in the second and subsequent rows can be efficiently mounted.

The replacement method of the module unit of the present invention is a replacement method of replacing the module units laid in a plurality of front and rear rows on the roof by the roof mounting method of the solar cell structure described above,
Remove the front hook side from the front side frame part of the module unit to be replaced, push up the module unit to be replaced to the ridge side, disengage at least the protruding side of the rear side frame part from the rear fixture, and the module unit in the ridge side rear row The front end of the roofing material in the rear row or the rear row is lifted, the module unit to be replaced is removed from the roof, and then the rear end of the new module unit in which the front hook side has been removed from the module frame in advance is replaced with the rear row module unit. Insert it under the roofing material of the lower row or the rear row, hook at least the protruding side to the rear fixing device, attach the front hooking side to the front frame of the new module unit, and hook the front fixing device or the module unit in the front row. It is to be engaged with the side.
According to this replacement method, if the front catching side of the module unit to be replaced is removed, by pushing this module unit toward the ridge side, the protruding side of the rear frame portion is detached from the rear fixture. Further, when there is a module unit in the adjacent rear row, the rear hook side of the module unit to be replaced also separates from the front hook side of the rear row unit. Therefore, the removal of the module unit is easy, the installation of the new module unit may be performed in the reverse order of the removal, and the replacement operation is easy.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiment.

  FIG. 1 is a plan view showing a module unit according to an embodiment of the present invention, FIG. 2 is a side sectional view showing the module unit according to the embodiment, and FIG. FIG. 4 is a side sectional view showing a state in which the module units are laid in two front and rear rows, and FIG. 4 is a front sectional view showing the module unit according to the embodiment. In this embodiment, the flat tiles are laid on the roof. In general, many flat tiles are provided with an upper weight portion (so-called overlap portion) on the right side. Although the case of a flat roof tile provided with a portion is exemplified, the same configuration can be applied to the flat roof tile provided with an upper weight portion on the left side.

  The present invention relates to a roof mounting structure for a solar cell module in which a plurality of square (rectangular) solar cell modules M are laid on the roof in front and rear and left and right of each other or adjacent to a tile 1, a module unit U, and a solar cell. It is a structure, a roof mounting method thereof, and a method of replacing a module unit. As shown in FIGS. 1 to 3, the roof mounting structure of the solar cell module includes a module frame 10 mounted on four sides of the solar cell module M and a module unit U obtained by mounting the module frame 10 on the solar cell module M. A fixing member comprising a front fixing tool 31 and a rear fixing tool 32 for fixing the roof base plate 2 to the tile bar 3 is provided.

  The frameless solar cell module M seals a plurality of (in this case, 11 in each of two rows) solar cells S using a filler between the front side glass and the back side film, and The back film 10a containing a metal foil is attached to the back surface of the side film. A terminal box is provided at one of the left and right ends on the back side of the solar cell module M, and a pair of positive and negative electric cables are provided in the terminal box. The module unit U, in which the module frame 10 is attached to the solar cell module M, has a length in the left-right lateral direction substantially equal to the length in the left-right lateral direction of the plurality of tiles 1 stacked side by side. The length is set substantially equal to the length of the roof tile 1 in the vertical direction.

  The module frame 10 mainly includes a pair of opposing first and second frames, another opposing pair of third and fourth frames, and a screw for interconnecting the respective frames. . Specifically, assuming that the solar cell module M is laid on the roof, a front frame portion (first frame portion) 11 attached to the eave-side edge of the solar cell module M, and a ridge side of the module M A rear frame (second frame) 12 attached to the edge, a left frame (third frame) 13 attached to the left edge of module M, and a right frame attached to the right edge of module M (Fourth frame portion) 14 and a plurality of stainless steel screws for interconnecting the four frame portions 11, 12, 13, 14 with each other. These frames 11, 12, 13, and 14 are formed into a desired cross-sectional shape by, for example, extruding aluminum or an aluminum alloy.

To describe the shape and structure of each frame portion of the module frame 10, as shown in FIGS. 2 and 5, the front frame portion 11 is formed by forming an eave-side edge of the solar cell module M with a foamed resin {for example, foamable EPDM (ethylene A holding portion 11a having a substantially U-shaped cross section formed so as to be inserted and held through a sealing material 16 made of propylene / diene / methylene) resin｝, and a holding portion 11a connected to the holding portion 11a so as to project downward. A hanging portion 11b having a screw hole for screwing the screw 17 at a predetermined position, and a rear projecting piece 11c projecting from the rear surface of the hanging side portion 11b and having a screw hole for screwing the screw 18 at a predetermined position. And a pair of upper and lower locking sides 11d, 11d provided on the front surface of the holding portion 11a and the hanging side portion 11b.
A front hooking side 21 having an L-shaped cross section is attached to the front side frame portion 11. The front hooking side 21 is formed by bending a plate made of, for example, stainless steel, and has a screw hole for inserting the screw 17 in a state of being superposed on the front surface of the hanging side 11b of the front frame 11 on the front wall 21a. The engaging plate portion 21b is provided so as to project rearward from the lower end of the front plate portion 21a. Note that the rear end of the hanging plate portion 21b is slightly bent upward.

As shown in FIGS. 2 and 6, the rear frame portion 12 has a substantially U-shaped cross section formed so as to hold the ridge-side edge of the solar cell module M in an interposed state via a sealing material 16. Part 12a, a hollow part 12b connected to the rear surface of the holding part 12a and having a screw-threaded recess for connecting the left frame part 13 and the right frame part 14 therein, and a ridge side from the upper wall of the hollow part 12b. L-shaped mounting side portion 12c having a screw hole for screwing a screw 19 into a predetermined position, and a projection (eave side) provided on the lower surface of the hollow portion 12b. It has a side 12d and a hook portion 12e that extends forward from the lower wall of the holding portion 12a and has a bent end.
Then, a rear hook side 22 is attached to the rear frame portion 12. Thereafter, the hooking side 22 is formed by bending a plate made of, for example, stainless steel, is fitted to the mounting side 12c, and has a U-shaped mounting section having a screw hole through which the screw 19 is inserted into the upper wall. 22a and a laterally L-shaped engaging plate portion 22b projecting forward from the front end of the upper wall of the mounting portion 22a, and the front end of the engaging plate portion 22b is slightly bent upward. The rear hooking side 22 is divided into a plurality of pieces (see FIG. 1). In the case of the present embodiment, two rear hooking sides 22, 22 are separated by a predetermined distance near the center of the rear frame portion 12. Are attached, and two rear catching sides 22, 22 of which length is approximately half longer than these, are attached on both sides thereof with a predetermined space therebetween.

  As shown in FIGS. 4 and 7, the left frame portion 13 has a substantially U-shaped holding portion 13 a formed so as to hold the left end edge of the solar cell module M via a sealing material 16 in an inserted manner. A hanging side 13b projecting vertically downward from a side wall of the holding portion 13a, and a lower weight receiving side 13c for preventing water leakage projecting to the left from a lower end of the hanging side section 13b, and on an upper surface of the lower weight receiving side 13c. Has a plurality of draining protrusions 13d extending in the front-rear direction and a bent end 13e bent upward.

  As shown in FIGS. 4 and 8, the right frame portion 14 has a substantially U-shaped holding portion 14 a formed so as to hold the right end edge of the solar cell module M in an inserted manner via a sealing material 16. And an upper weight side 14b protruding rightward from the upper wall of the holding portion 14a, and the upper weight side 14b has a plurality of drainage projections 14c extending in the front-rear direction on the lower surface.

As shown in FIGS. 2 and 9, the module frame 10 is detachably attached to the front frame portion 11 and covers a front end face, and is disposed on the back side of the solar cell module M. Further, a reinforcing member 20 for connecting the front frame portion 11 and the rear frame portion 12 is further provided.
The decorative cover 15 is provided on a front wall 15a, an upper wall 15b in which the upper end of the front wall 15a is curved backward, a rear end of the upper wall 15b, and a rear surface of the front wall 15a. It has a pair of upper and lower locking sides 15c, 15c which engage with a pair of upper and lower locking sides 11d, 11d.
The reinforcing member 20 is made of, for example, a stainless steel plate, has a screw hole at the front end through which a screw 18 to be attached to the rear projecting piece 11c of the front frame 11 is inserted, and engages the hook 12e of the rear frame 12. It has an engagement hole at the rear end. One or a plurality of the reinforcing members 20 may be provided. If one reinforcing member 20 is provided, the reinforcing member 20 is disposed at an intermediate position in the left-right longitudinal direction of the module frame 10; Accordingly, the positions and numbers of the screw holes in the front frame portion and the hook portions 12e in the rear frame portion are set accordingly.

As shown in FIGS. 3 and 10, the front fixing member 31 of the fixing member is made of, for example, a stainless steel plate material, is mounted on a position corresponding to the nail hole at the ridge side end of the roof tile 1, and has a fixing bracket 33 (this In this case, a fixing plate 31b having a corresponding hole 31a through which a wood screw is inserted, and an engaging side 31c provided at the front end of the fixing plate 31b, the front end of the engaging side 31c is slightly bent upward. Have been. The front fixture 31 is formed to have a length substantially equal to the front frame 11 of the module frame 10.
On the other hand, as shown in FIGS. 3 and 11, the rear fixing member 32 of the fixing member is made of, for example, a stainless steel plate material, is mounted on the tile bar 3 in the left-right direction of the field board 2, and has a fixing member 34 (in this case, a wooden member). A fixing plate 32b which is fixed to the tile bar 3 in the left and right direction by inserting a fixing fitting 34 into the hole 32a, and from a front edge of the fixing plate 32b. And a hook side 32c bent rearward. A triangular convex portion 32d is formed on the lower surface of the end portion bent rearward of the engaging side portion 32c. Further, the rear end of the fixed plate portion 32b is formed so as to be bent downward and to be hooked on the corner portion of the roof tile 3 in the left-right direction. The rear fixture 32 is formed to be shorter than the rear frame 12 of the module frame 10.

Next, as shown in FIGS. 3 and 4, an example of a construction procedure of laying a predetermined number of solar cell modules M in two upper and lower layers together with the tile 1 on the roof will be described.
First, as shown in FIGS. 1 and 2, module frames 10 are attached to four sides of the solar cell module M. At this time, first, the front frame portion 11 is attached to the eaves side edge of the solar cell module M with screws (not shown), and then the left frame portion 13 and the right frame portion 14 are screwed to the left and right edges of the module M, respectively. Then, the rear frame 12 is attached to the ridge side edge of the module M with screws. In this way, a required number of module units U are assembled. The assembly of the module unit U may be performed at the construction site, or may be completed before transport to the site.

  The method of installing the module unit U on the roof is as follows, and will be described with reference to FIGS. 3 and 4 and FIGS. FIG. 12 is a cross-sectional view of a main part showing a mounting structure on the eaves side of the module units in the front row, and FIG. 13 is a cross-sectional view of a main part showing a mounting structure on the eaves side of the module units in the front row and the module units in the rear row. FIG. 14 is a cross-sectional view of a main part showing a mounting structure on the ridge side of the rear row of module units.

  First, the roof tile 1 is roofed from the right side in the first row of the eaves side of the field board 2. Next, using the nail holes of the roof tile 1 in the eaves side, the front fixture 31 serving as a starter for attaching the module unit U is attached with a fixture (wood screw) 33. Subsequently, the roof tiles 1 in the second row on the eaves side are mounted to a position short of the module unit mounting position.

  Then, the first module unit U is fixed to the left side of the roof tile 1 using the rear fixture 32. At this time, in a state where the rear end of the module unit U is lifted and the rear fixing member 32 is engaged with the projecting side 12 d of the rear frame portion 12 of the module frame 10, the front hook side 21 of the front frame portion 11 is fixed to the front fixing member 21. The rear fixing device 32 is mounted on the tile bar 3 in the left-right direction and fixed by the fixing metal member 34. In the first module unit U fixed in this manner, the upper weight side 14b of the right frame portion 14 overlaps the lower weight portion 1b of the roof tile 1, thereby preventing water leakage (flooding). According to the attachment procedure of the first module unit U, the second and subsequent module units U are sequentially fixed to the roof tile 3 in the left-right direction. During this time, the electric cable on the positive electrode side or the negative electrode side of the right solar cell module M is passed under the adjacent solar cell module M on the left side, and is connected to the electric cable on the negative electrode side or positive electrode side of the left solar cell module M. .

  Between these plurality of module units U, the upper weight side 14b of the left module unit U overlaps the lower weight receiving side 13c of the right module unit U, thereby preventing leakage of rainwater. Then, the tile 1 is continuously laid next to the left of the leftmost module unit U. The upper weight portion 1a of the roof tile 1 overlaps the lower weight receiving side 13c of the module unit U on the right side to prevent rainwater from leaking. Thus, the installation of the eaves-side second-tier tile 1 and the eaves-side first-tier solar cell module M is completed. Note that the surface of the solar cell module M is disposed at a height position substantially equal to the lowest portion of the surface (outer surface) of the roof tile (flat roof tile) 1.

  Next, the procedure moves to the installation of the roof tile 1 in the third row on the eaves side and the solar cell module M in the second row on the eaves side. At this time, the module unit U in the rear row straddles the module unit U in the front row installed earlier, that is, one module unit U in the rear row is placed on each rear frame portion 12 of the two module units U in the front row. Is shifted so that the front side frame part 11 is mounted. The method of attaching the rear row of module units U is substantially the same as described above, but in this case, the front fixture 31 is not required. That is, in a state where the rear fixture 32 is engaged with the protruding side 12d of the rear frame portion 12 of the module frame 10 in the rear row (second row on the eaves side), the front hook side 21 of the front frame portion 11 is connected to the module in the front row. The frame 10 is hooked on the rear hooking side 22, and the rear fixing tool 32 in the rear row is mounted on the tile bar 3 in the left-right direction, and is fixed with a fixing metal (wood screw) 34. In this manner, a plurality of module units U are sequentially laid on the left side of the tile 1, and the tile 1 is laid on the left side of the leftmost module unit U. The installation of the second row of solar cell modules M is completed. During this time, the electric cables of the solar cell modules M adjacent to the left and right are connected in series similarly to the front row, and one of the electric cables of the leftmost solar cell module M installed last is inserted indoors through a wiring port (not shown) opened on the roof. Pull in. In addition, the front frame 21 and the rear frame 22 (or the rear frame 12) of the module frame 10 of the rear row solar cell module M and the module frame 10 of the front row solar cell module M are electrically connected. Are connected electrically, the module frames 10 of all the front, rear, left and right module units U are in an electrically connected state. Therefore, the rear side of the leftmost module frame 10 installed last in the rear row An earth cable is connected only to the frame portion 12, and the earth cable is drawn indoors together with the electric cable to perform earth wiring. One of the electric cables of the rightmost solar cell module M in the front row is passed beside the rear fixture 32, connected to one of the electric cables of the rightmost solar cell module M in the rear row, and the leftmost end of the front row. One of the electric cables of the solar cell module M passes through the side of the rear fixture 32 and is drawn indoors from the wiring port. In the case of the present embodiment, as shown in FIGS. 3 and 14, the rear hook side 22 is attached to the rear frame portion 12 of the module frame 10 of the module unit U in the rear row. 22 may be removed before installing the module unit U.

  As described above, a plurality of module units U each including the solar cell module M with the module frame 10 attached thereto are arranged side by side on the roof in two front and rear rows by the fixing member to form a solar cell array. Is done. This solar cell array is provided with the above-described flood prevention in the left-right direction, and the ridge-side module unit U is installed in the eaves-side module unit U in the roof flow direction (front-back direction) in the same manner as tile laying. Water leakage is prevented by being loaded. In the fixing structure for mounting the solar cell module M on the roof surface, the eaves side of the front and rear module units U hooks the front hook side 21 to the front fixture 31 or the rear hook side 22 of the front row module units U. Since the ridge sides of the module units U in each of the front and rear rows are directly fixed to the roof tiles 3 in the left-right direction with the rear fixtures 32, the solar cell modules M can be laid directly together with the roof tiles on most roof surfaces. . In addition, since the solar cell module M (module unit U) is directly installed on the base plate as a roof material, the need for a mount is eliminated, the number of mounting parts is significantly reduced, and installation work for the mount is omitted. Time is greatly reduced, and construction costs are reduced. In addition, since there is no mount, the height of the solar cell module surface is as low as that of the surrounding tiles, and the height is not integrated with the roof material and the appearance is not spoiled. In addition, by making the rear fixing member shorter than the rear frame portion, the air permeability is improved, the temperature rise of the solar cell module M can be suppressed, and the wiring work of the electric cable becomes easy. Furthermore, by engaging the rear hooking side 22 and the front hooking side 21 of the module frames 10 of the front and rear adjacent solar cell modules M, the module frames 10 of the front and rear solar cell modules M are electrically connected to each other. The necessity of wiring a ground cable between the module frames 10 and 10 is eliminated. Further, by using the film provided on the opposite side of the light receiving surface as the back film 10a containing metal foil (for example, steel plate), a fire prevention structure can be obtained, which can be more preferable as a roof material having fire protection.

Next, a description will be given of a replacement method in the case where the solar cell module installed on the roof surface has a failure or is replaced according to its life as described above.
When replacing the module unit U in the front row, first, the decorative cover 15 of the module frame 10 of the module unit U to be replaced is removed, the screw 17 is removed, and the front hooking side 21 is removed from the front frame portion 11. At this time, a screwdriver or the like can be applied to the screw 17 from the front of the module frame 10, so that the module 17 can be easily removed. Then, the module unit U to be replaced is pushed up to the ridge side, whereby the protruding side 12d of the rear side frame portion 12 is separated from the rear fixture 32, and the rear hook side 22 is separated from the front hook side 21. Then, the front end of the module unit U in the rear row (ridge side) is lifted, and the module unit U to be replaced is removed from the roof. At this time, the electric cable of the module unit U to be replaced is disconnected from the electric cable of the module unit U adjacent to the left. Next, the rear end of the new module unit U, whose front hook side has been removed from the module frame in advance, is inserted below the ridge side module unit U, and the electric cable of the new module unit U is connected to the left adjacent module. Connect both electrical cables under unit U. Then, the projecting side of the new module unit U is hooked on the rear fixture 32, and the rear hooking side is hooked on the front hooking side 21 on the ridge side. The front hooking side is attached and engaged with the front fixture 31, and the decorative cover 15 is attached to complete the replacement operation. The procedure for replacing the module unit U in the rear row is the same.

  As described above, according to the replacement method of the module unit U of the present invention, the removal of the module unit U to be replaced and the attachment of a new module unit U can be performed only by removing and attaching the screw 17 and the front hooking side 21. Therefore, the replacement operation can be completed easily in a short time.

[Other embodiments]
1. In the above-described embodiment, the case where the tile is a flat tile having an upper weight portion on the right edge side is exemplified.However, in the case where a flat tile having an upper weight portion on the left edge side is laid on the roof, the module frame is formed as described above. The structure may be symmetrically reversed to the left and right.
2. In the above embodiment, the case where the tile is a flat tile is illustrated, but the present invention is also applicable to a case where the tile is a deformed tile. In this case, the shapes of the front frame portion and the decorative cover are matched. The shape and dimensions of the module frame are set so that the position of the surface of the solar cell module is aligned with the lowest surface (outer surface) of the deformed roof tile.
3. In the above embodiment, the case where the solar cell modules are laid on the roof in two stages before and after is exemplified. However, the number, the number, and the arrangement of the solar cell modules according to the size of the roof surface, the amount of power to be obtained, and the like. The pattern can be changed freely.
4. As the roofing material, in addition to the tile having the upper and lower overlapping portions at the left and right edges, a flat plate-shaped tile or a slate having no such upper and lower overlapping portions can be used. When the module unit of the present invention is laid on the roof together with such a roofing material having no upper and lower overlapping portions, the module frame 10 of the module unit U laid on the rightmost side will be described with reference to FIG. Is formed as the lower weight receiving side, and the lower weight receiving side on the right side is placed under the adjacent right roofing material to prevent rainwater leakage. In this case, the projecting height of the rear fixing member 32 from the base plate 2 shown in FIGS. It is preferable to make the height of the outer surface of the unit U as low as possible, so that a sense of unity between the roofing material and the module unit U can be obtained.

It is a top view showing the module unit in an embodiment of the invention. FIG. 3 is a side sectional view showing the module unit in the embodiment. It is a sectional side view showing the state where module units in the embodiment were laid in two rows on the roof front and back. FIG. 3 is a front cross-sectional view showing the module unit according to the embodiment. It is sectional drawing which shows the front side frame part of the module frame in the embodiment. It is sectional drawing which shows the rear frame part of the module frame in the embodiment. It is sectional drawing which shows the left side frame part of the module frame in the embodiment. It is sectional drawing which shows the right side frame part of the module frame in the embodiment. It is sectional drawing which shows the decorative cover of the module frame in the embodiment. It is sectional drawing which shows the front fixing tool of the fixing member in the same embodiment. It is sectional drawing which shows the rear fixing tool of the fixing member in the same embodiment. FIG. 4 is a cross-sectional view of a main part showing a mounting structure on the eaves side of the module units in the front row in a state where the module units of the embodiment are laid on a roof together with tiles. It is a principal part sectional view in the state where the module unit of the embodiment was laid on the roof with the tile, and shows the mounting structure of the ridge side of the module unit of the front row, and the eaves side of the module unit of the back row. It is a principal part sectional view in the state where the module unit of the embodiment was laid on the roof with the tile, and shows the mounting structure of the module unit of the back row on the ridge side. It is a schematic perspective view which shows the conventional module unit in which the module frame was attached to the solar cell module. It is an exploded perspective view of the conventional module unit. It is a schematic perspective view explaining the conventional mounting method of mounting the same module unit on a roof.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Roof 10 Module frame 11 Front frame part 12 Rear frame part 13 Left frame part 14 Right frame part 31 Front fixing tool 32 Rear fixing tool M Solar cell module U Module unit

Claims (16)

A roof mounting structure attached to four sides of a rectangular solar cell module and provided with a module frame for laying the solar cell module on an inclined roof,
The module frame includes a pair of first and second frame portions facing each other and another pair of third and fourth frame portions facing each other,
The roof mounting structure for a solar cell module, wherein the third frame portion and the fourth frame portion each have a water leakage prevention side projecting outward and extending along the length of the frame portion. The first frame portion is a front frame portion arranged on the eaves side at the lower end of the slope of the roof,
The second frame portion is a rear frame portion arranged on the ridge side at the upper end of the slope of the roof,
The third frame portion is a left frame portion arranged on the left side with respect to the slope of the roof,
The fourth frame portion is a right frame portion arranged on the right side with respect to the slope of the roof,
In the state where the module units in which the module frames are attached to the solar cell modules are laid on the roof one after the other or adjacently to the roofing material,
The rear frame overlaps with the front frame or the roofing material of the module unit adjacent to the ridge side,
The water leakage prevention side of the left side frame part overlaps below or above the water leakage prevention side of the right side frame part of the module unit adjacent to the left side or the right edge of the roofing material,
2. The solar cell module according to claim 1, wherein the water leakage prevention side of the right side frame portion is configured to overlap with the water leakage prevention side of the left side frame portion of the module unit adjacent to the right side or the left side edge of the roofing material on or below. Roof mounting structure. The front frame portion has a front hook side on its lower surface side,
The roof mounting structure for a solar cell module according to claim 2, wherein the rear frame portion is disposed on the upper surface side and has a rear hook side that hooks in a front-rear direction with a front hook side of a module unit adjacent to the ridge side. Along with a fixing member for fixing the module frame to the left and right rails on the roof, the rear frame portion of the module frame has a projecting side projecting forward on a lower surface thereof,
The fixing member includes a plurality of fixing brackets, a front fixing tool that can be hooked in a front and rear direction with a front hooking side of a module frame, and a rear fixing tool that can be hooked in the front and rear direction with the protruding side of a rear frame portion.
The front fixture has a hole through which the fixing bracket is inserted, and a left and right direction through a roofing material with a fixing metal inserted through the hole and a fixing metal insertion hole provided in the roofing material. Fixed on the crosspiece
The rear fixture has a hole through which the fixture is inserted, is mounted on a left-right crossbar in a state of being engaged with the protruding side of the rear frame, and allows the fixture to be inserted through the hole. The roof mounting structure for a solar cell module according to claim 3, wherein the roof mounting structure is fixed to a crosspiece in the left-right direction.   The first frame portion, the second frame portion, the third frame portion, and the fourth frame portion are respectively divided, and the module frame further includes a screw for connecting and assembling the respective frame portions. A roof mounting structure for a solar cell module according to any one of the above.   The roof attachment structure according to any one of claims 3 to 5, wherein the front hook side is detachably attached to the front frame portion from the front with screws.   The roof mounting structure for a solar cell module according to any one of claims 2 to 6, wherein the module frame further includes a decorative cover detachably attached to the front frame portion to cover a front end surface.   The solar cell module according to any one of claims 1 to 7, wherein the module frame is disposed on the back side of the solar cell module, and further includes a reinforcing member that connects the first frame portion and the second frame portion. Roof mounting structure.   The solar cell module roof mounting structure according to any one of claims 4 to 8, wherein the rear fixture is formed to have a shorter length than a rear frame portion of the module frame.   The solar cell module roof mounting structure according to any one of claims 1 to 9, wherein the module frame further includes a foamed resin part interposed between the module frame and the solar cell module.   A module unit comprising: a rectangular solar cell module; and a module frame of the solar cell module roof mounting structure according to any one of claims 1 to 3, 5 and 7 to 10 attached to the solar cell module.   The module unit according to claim 11, wherein the solar cell module has a back film containing a metal foil attached to a back surface thereof. A module unit including a square solar cell module and a module frame attached to the solar cell module, and a fixing member for fixing the module unit to a left-right crosspiece of a roof,
The module frame,
A front frame located on the eaves side at the bottom of the roof slope,
A rear frame portion located on the ridge side of the upper end of the roof slope,
A left frame portion having a water leakage prevention side that is arranged on the left side with respect to the slope of the roof, protrudes outward, and extends along the frame portion longitudinal direction,
A right side frame portion is disposed on the right side with respect to the slope of the roof, has a water leakage prevention side protruding outward, and extending along the frame portion longitudinal direction,
The front side frame portion has a front hook side on its lower surface side,
The rear frame portion is disposed on the upper surface side, is positioned on the front hook side of the front hook frame of the adjacent module frame, and engages in the front-rear direction, and a protruding side projecting forward on the lower surface. Has,
The left frame portion and the right frame portion each have a water leakage prevention side projecting outward and extending along the frame portion longitudinal direction,
The fixing member,
A plurality of fixtures, a front fixture that can be engaged in the front-rear direction with the front hook side of the module frame, and a rear fixture that can be engaged in the front-rear direction with the protruding side of the rear frame portion,
The front fixture has a hole through which the fixing bracket is inserted, and a fixing bracket inserted through the hole and the fixing bracket insertion hole provided in the roofing material. It is fixed to the upper left and right crosspiece,
The rear fixture has a hole through which the fixture is inserted, and is mounted on a left-right crossbar in a state of being engaged with the protruding side of the rear frame, and the fixture is inserted through the hole. It is configured to be fixed to the crosspiece in the left and right direction,
Furthermore, in a state where the module units in which the module frames are attached to the solar cell modules are laid on the roof in front and rear and left and right of each other or adjacent to the roofing material,
The rear frame overlaps with the front frame or the roofing material of the module unit adjacent to the ridge side,
The water leakage prevention side of the left side frame portion overlaps the lower or upper part with the water leakage prevention side of the right side frame portion of the module unit adjacent to the left or the right edge of the roofing material,
A solar cell structure, wherein the water leakage prevention side of the right side frame portion is configured to overlap above or below the water leakage prevention side of the left side frame portion of the module unit adjacent to the right or the left edge of the roofing material. body. A roof mounting method for laying the solar cell structure according to claim 13 on a roof,
The front fixture is fixed to the left and right rails of the roof from above the roofing material with fixing brackets, and the rear fixture is engaged with the projecting side of the rear frame of the module frame. A method for mounting a solar cell structure on a roof, wherein a hook side is hooked on a front fixing device, and a rear fixing device is mounted on a crosspiece in the left-right direction and fixed with a fixing metal.   When laying the module units on the roof in multiple front and rear rows, the front hook of the front frame of the rear row of module units is held with the rear fixtures hooked on the protruding sides of the rear frame of the module units in the ridge side rear row. The method according to claim 14, wherein the side is engaged with the rear hooking side of the module unit in the front row, and the rear fixing tool on the rear row side is mounted on a crosspiece in the left-right direction and fixed with the fixing bracket. . A replacement method for replacing module units laid in a plurality of front and rear rows on a roof by the method for mounting a solar cell structure on a roof according to claim 15,
Remove the front hook side from the front side frame part of the module unit to be replaced, push up the module unit to be replaced to the ridge side, disengage at least the protruding side of the rear side frame part from the rear fixture, and the module unit in the ridge side rear row The front end of the roofing material in the rear row or the rear row is lifted, the module unit to be replaced is removed from the roof, and then the rear end of the new module unit in which the front hook side has been removed from the module frame in advance is replaced with the rear row module unit. Insert it under the roofing material of the lower row or the rear row, hook at least the protruding side to the rear fixing device, attach the front hooking side to the front frame of the new module unit, and hook the front fixing device or the module unit in the front row. A method of replacing a module unit, wherein the module unit is engaged with a side.

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