JP2006332286A - Fixing device, fixing structure, and fixing method of solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing device of a solar cell module of excellent watertightness, in which attaching/detaching of it is easily performed. <P>SOLUTION: The fixing device fixes one end of a solar cell module 1, and comprises an installation frame 2; and an elastic member 6, having watertight regions 6b and 6c, which is jointed to the installation frame 2 to constitute an insert opening 7 for the solar cell module together with a part of the installation frame 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solar cell module fixing device, a fixing structure, and a fixing method for generating power using solar energy.

  In recent years, solar power generation in which solar cell modules are arranged on the roofs of ordinary houses and public buildings due to increasing environmental awareness has attracted attention as clean energy. Conventionally, as such a solar power generation, for example, a solar power roof J in which a roof tile 91 and a roof tile-integrated solar cell module 92 are stacked on a roof 90 of a general house as shown in FIG. It has been known.

Further, as shown in FIG. 15, a digging portion 20 a is provided in the base frame 20 into which the frame portion of the solar cell module is inserted and fixed, and a movable member 17 that can be deformed is further provided in the frame W, and is movable with the digging portion 20 a. By inserting the frame part 5a of the solar cell module 1 into the opening between the members 17, the movable member 17 escapes upward to allow the solar cell module to enter, and the lower part of the frame part 5a is the digging part 20a. A method has been introduced in which the solar cell module 1 is detachably fitted and fixed without using a fastening member (see, for example, Patent Document 1).
JP 2000-104385 A

  However, the fixing method has a problem that rainwater enters between solar cell modules provided in the upper and lower stages and causes each fixing member to corrode. Moreover, in the said structure, there exists a problem that it is difficult to lift and remove the lower stage solar cell module diagonally upward in the state which accumulated the solar cell module on the upper part.

  Therefore, the present invention has been devised in view of the above-described drawbacks, and an object of the present invention is to provide a solar cell module fixing device that can easily attach and detach a solar cell module and has excellent water-stopping properties. There is.

  The fixing device of the present invention fixes one end of a solar cell module, and is configured to be connected to the installation frame and a part of the installation frame and the insertion slot for the solar cell module. And an elastic member having a water stop region.

  Further, the water stop region of the elastic member is characterized by extending to the lower side of the solar cell module arranged in a tiled manner on the upper stage.

  Furthermore, the elastic member has a corrosion prevention layer on its surface.

  Further, the solar cell module fixing structure of the present invention is such that the solar cell module is inserted into the insertion port of the fixing device and pressed into the insertion port by the restoring force of the elastic member.

  Furthermore, the fixing method of the solar cell module of the present invention is to fix one end of the solar cell module, and the step of inserting the solar cell module into the insertion port of the fixing device while deforming the elastic member. It is what has.

  According to the fixing device of the present invention, one end of the solar cell module is fixed, and the installation frame is joined to the installation frame, and a part of the installation frame and the insertion slot for the solar cell module And an elastic member having a water stop region, and the elasticity of the elastic member makes it easy to attach and detach the solar cell module to the insertion port, and rainwater that has fallen on the elastic member Corrosion that may be caused by entering the inside of the fixing device can be suppressed with a simple configuration. In this case, it is not necessary to provide a water stop area in the installation frame itself having a relatively complicated and heavy structure, and it is possible to suppress complication of processing and reduce installation frame members.

  In addition, if the water stop region of the elastic member extends to the lower side of the solar cell module arranged in a tiled manner on the upper stage, the space below the upper solar cell module is effectively used. It becomes possible.

  Furthermore, if a corrosion prevention layer is provided on the surface of the elastic member, it is possible to reduce the rust preventive material without separately performing a rust preventive treatment on the installation frame.

  Further, according to the fixing structure of the solar cell module of the present invention, the solar cell module is inserted into the insertion port of the fixing device and is pressed into the insertion port by the restoring force of the elastic member. Since it is pressed and fixed upon completion, a temporary placement operation such as a solar cell wiring check can be performed without performing a temporary fixing operation until the other end side is fixed. Moreover, the adhesiveness with a solar cell module becomes high by the press by an elastic member, and the rattling and noise of a module by wind pressure etc. can be suppressed.

  Furthermore, according to the fixing method of the solar cell module of the present invention, one end portion of the solar cell module is fixed, and the elastic member is deformed into the insertion port of the fixing device while the solar cell module is deformed. Since the step of inserting is included, for example, the solar cell module can be easily inserted or removed from an oblique angle with respect to the insertion port, and the workability can be greatly improved.

  In the following, the present invention will be described in detail based on a diagram schematically showing an example of an embodiment of the present invention.

FIG. 1 is a perspective view showing a solar cell module fixing device according to the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a partially enlarged sectional view of a peripheral portion of a ridge side frame.

  As shown in FIG. 1, the solar cell module fixing device of the present invention includes a ridge side frame 2 (eave side frame 3) that is an installation frame fixed on a roof 90 or an installation stand with screws, nails, adhesive, or the like. The water stop cover 6 is an elastic member. The eaves side cover 4 is a member that presses and fixes the solar cell module 1 on the eaves side.

  In this example, the eaves side frame 3 and the ridge side frame 2 are described as having only one solar cell module 1 mounted thereon, but a plurality of solar cell modules 1 are mounted on the same frame. The same effect can be obtained as a solar cell array.

  As shown in FIG. 2, a water-stop cover 6 is fixed on a rail-shaped ridge-side frame 2 made of metal such as iron, aluminum, and stainless steel by screws or adhesion, and the ridge-side frame 2 and the water-stop cover described later are used. The end of one side of the solar cell module 1 is inserted and fixed in the insertion port constituted by 6. Opposite sides of the solar cell module 1 are received on an eaves side frame 3 which is a metal rail fixed in the same manner as the ridge side frame described above, and tightened to the eaves side frame 3 with a fastening member such as a screw. The eaves side cover 4 to be fixed is clamped and fixed.

  FIG. 3 shows a state in which the solar cell module 1 is sandwiched and fixed by the ridge side frame 2 and the water stop cover 6. The water-stop cover 6 is made by pressing or bending iron, stainless steel, aluminum, or copper sheet metal, and is screwed, urethane-based, or synthetic rubber-based on the ridge side frame 2 attached to the roof 90 of the house or a fixed base. It is fixed with an adhesive or metal adhesive. Generally, the sheet thickness of such a sheet metal is 0.3 mm to 1.2 mm. The water stop cover 6 made of such a sheet metal has elasticity, and the ridge side frame 2 always presses the solar cell module 1, has high adhesion, and wind pressure or the like is applied to the solar cell module 1. However, there will be no noise due to rattling.

  In the example shown in the figure, the upper solar cell module is covered in a tiled pattern until the end of the lower solar cell module 1. In such a case, the solar cell module 1 is held down. The water stop cover 6 is exposed as a roof appearance. Therefore, in the conventional structure where the ridge-side rail also serves as a water-stop cover, the surface color is silver so that rust and corrosion do not impair the aesthetics, and rust prevention treatment such as hot dip galvanization, for example Therefore, it is difficult to take a sense of unity with the color of other solar cells and frames, but according to the water-stop cover 6 of the present invention, the sheet metal itself is originally a roofing material, and a coated steel plate whose surface is rust-proofed. Is generally resistant to rust and corrosion, and the paint color can be freely selected without damaging the aesthetics of the roof. Moreover, since the rust prevention process of the ridge side frame 2 does not need to be concerned about the external appearance, a simple method can be selected, and the labor of processing and the reduction of rust prevention materials can also be made possible. Moreover, since the water stop function is not required for the ridge-side frame 2, it is possible to reduce the number of frame members, and the downsizing of the frame improves the transportability and laying workability. In addition to coating with water-based or oil-based paints, anti-corrosion of coated steel plates, such as hot-dip galvanized and aluminum zinc alloy plated (galvalume steel plates), and fluororesin-coated steel plates ( In addition, there are paints that provide heat insulation and heat insulation by painting on them, and they can be selected alone or in combination depending on the purpose.

  Next, how the solar cell module 1 is easily attached and detached by the water stop cover 6 will be described. As shown in FIG. 4 (a), the solar cell module 1 is inserted by the ridge-side frame 2 fixed on the roof 90 with wood screws 40 and the waterproof cover 6 fixed on the ridge-side frame 2. Mouth 7 is configured. The solar cell module 1 is inserted into the insertion port 7. Normally, when the elastically deforming portion 6 a of the water blocking cover 6 is not elastically deformed, the solar cell module 1 is inserted in a horizontal state with respect to the insertion port 7. Otherwise, it cannot be inserted by being caught on each part frame. However, according to the fixing device of the present invention, as shown in FIG. 4 (b), the elastic deformation portion 6 a of the water stop cover 6 is indicated by an arrow in the figure by pushing the solar cell module 1 into the insertion port 7. The opening area of the insertion port 7 is expanded so that the solar cell module 1 can enter by elastically deforming upward. As a result, for example, in a roof having a gradient of 30 ° as shown in FIG. 6A, conventionally, an operator has to insert the solar cell module 1 horizontally with respect to the roof surface. Pushing work must be performed, and the scaffolding becomes unstable and there is a problem in safety. However, if the fixing device of the present invention is used, the solar cell module 1 is placed in the same horizontal state as the roof surface as shown in FIG. 3 can be inserted without lowering, and the solar cell module 1 is lowered after completion of the insertion, so that the fixed state as shown in FIG. 3 is completed, so that the working posture can be kept relatively high, workability, Safety is also improved. Furthermore, since the installed solar cell module 1 is stopped from falling toward the eaves by the pressing force of the water stop cover 6, it is temporarily fixed until the solar cell module is securely fixed by the eaves side cover. However, it is difficult to come off even if it is touched by a normal wind pressure load or an operator, and it is excellent in workability in a temporary placement state such as a wiring check of a solar cell, and the work efficiency can be improved.

  On the other hand, as shown in FIG. 5, the water stop cover 6 has water stop regions 6 b and 6 c, and plays a role of returning rain water 9 blown from a gap formed between the upper solar cell module and the eaves side cover 4. . Specifically, the rainwater 9 blown from the gap initially has movement energy, but the rain return portion 6b of the water stop cover 6 protrudes long inside the upper solar cell module and further has a gradient. As a result, rainwater gradually loses the energy of movement and decelerates, eventually flows back according to gravity and is discharged outside. Although not shown in particular, at this time, if one or a plurality of water stop projections 6c are arranged at the end or in the middle of the rain return portion 6b, the rain water 9 can be further decelerated, and the rain return portion It is also possible to shorten the distance 6b.

  As described above, by using the solar cell module fixing device of the present invention, it is easy to install and detach the solar cell module, and even if replacement or maintenance is performed, the roof has waterproofness regardless of the skill level of the operator. There is no damage, noise due to rattling or the like does not occur, and weight reduction, size reduction, and improvement in transportability can be realized by reducing the raw materials and surface treatment materials of the members.

  The present invention is not limited to the above-described embodiment, and various changes and improvements can be made without departing from the gist of the present invention.

  As shown in FIG. 7, the solar cell module 1 is inserted if a deformable sealing material 11 such as rubber or silicon is disposed in the insertion port 7 constituted by the ridge side frame 2 and the water stop cover 6. As a result, the degree of adhesion between the solar cell module 1 and the ridge-side frame 2 is further strengthened, and in the case of strong winds and the like, it is rare that rainwater is pushed back against the roof slope by the force of the wind. Since the water stopping performance of rainwater entering from the gap between the module 1 and the water stopping cover 6 is improved, the intrusion of rainwater can be prevented.

  Further, according to the structure shown in FIG. 8, the waterproofing cover 6 protrudes downward in the insertion port 7 and the sealing material 11 is fitted in the protruding portion, so that the sealing material 11 is prevented from falling off. In addition, since the sealing material 11 does not fall even when the solar cell module 1 is inserted, workability is improved.

  Furthermore, according to the structure shown in FIG. 9, the solar cell module arranged in the uppermost stage cannot exhibit water-stopping performance against wind and rain blowing from the back side of the water-stop cover 6, but covers the water-stop cover 6. If the ridge side end cover 12 is used and one end of the ridge side end cover 12 is sandwiched with the solar cell module 1 by the elastic deformation portion 6a of the water blocking cover 6 and pressed and fixed, holes such as screw tightening are formed. It is possible to install a water stop structure at the end of the building without providing it. The ridge side end cover 12 may be made of the same sheet metal as the water stop cover 6. At this time, as shown in the figure, it is preferable to add a cushioning material 14 to the back surface of the ridge-side end cover 12 so as to receive a load such as snow accumulation, thereby improving the load bearing strength.

  In addition, the solar cell module fixing device described above may be mounted by mixing a plurality of types of solar cell modules having different lengths as shown in FIG. Specifically, when the long solar cell module 1a and the short solar cell module 1b are arranged on the ridge side and the eave side, respectively, a short water stop cover 61 and a short ridge side frame as shown in FIG. 21 and the short eaves side frame 31 and the short eaves side cover 41, the short solar cell module 1b is mounted, and the long water-stop cover 61, the long ridge side frame 21 and the long eaves are placed on the ridge side. What is necessary is just to mount the elongate solar cell module 1a with the side frame 31 and the elongate eaves side cover 41, and the reverse relationship may be sufficient as long and short. In addition, as described above, since there is no particular limitation on the insertion and fixing position of the solar cell module, it is on one frame (refers to the structure of the eaves side frame, the ridge side frame, the eaves side cover, and the water stop cover). It is also possible to place a plurality of solar cell modules, and although not particularly shown, as an application, it is also possible to arrange one solar cell module across a plurality of frames installed in a row in the lateral direction. Therefore, various solar cell module mounting methods can be selected in combination with the above-described installation method using long and short solar cell modules. Therefore, it is possible to arrange solar cell modules according to various shapes of roofs.

  Next, a method for improving the strength of the water stop cover 6 will be described with reference to FIGS.

As shown in FIG. 11, the side 6d of the water stop cover 6 is bent in the same direction as the rain return portion 6b, so that the bending strength can be improved and the lateral movement of the entering rain water can be prevented. Water performance is improved. In addition, when the water stop cover 6 is fixed to the ridge side frame with screws 13 or the like, the sheet metal is an elastic material, so if it is supported by a point or line, it will be bent by its own weight from the vicinity of the screw. Thus, it is preferable to disperse the stress to the fixed portion of the water-stop cover 6 by supporting the screws 13 in a staggered arrangement so that they are supported by the surface. The same applies to the case of fixing by partial bonding using an adhesive or an adhesive material, and the arrangement of screws, adhesive material, and adhesive material can increase the strength against wind pressure and the like as the arrangement interval T increases. At the time of design, a ridge-side frame having a waterproof cover mounting width that matches the required wind pressure load is selected.

  Further, as shown in FIG. 12, a sheet metal may be press-molded to provide unevenness to improve the bending strength. In this case, for example, if the convex protrusions 14 are arranged, the strength is improved and the movement of the rainwater that has entered as shown by the arrows in the figure is inhibited from moving in the lateral direction. Further, since it is not necessary to increase the plate thickness in order to prevent bending by its own weight, it is possible to reduce the weight.

  Furthermore, as shown in FIG. 13, the waterproof cover 6 can be press-molded so that the appearance is a tiled roof (in the example shown in the figure, an image of a slate tile). Can easily cope with improvement. Further, although not particularly illustrated, if the back surface of the water stop cover 6 is uneven as described above by press molding, air permeability is improved because a gap flows between the ridge side frame and the water stop cover, Condensation and moisture are unlikely to accumulate, and rainwater is not easily drawn in by capillary action, so that the possibility that the contact surface between the ridge-side frame and the waterstop cover is corroded by moisture can be minimized, and an anti-corrosion action can be obtained.

It is a perspective view which shows typically a mode that the solar cell module was fixed with the fixing device of the solar cell module which concerns on this invention. It is a perspective view explaining typically composition of a fixing device of a solar cell module concerning the present invention. It is a partially expanded sectional view explaining the fixing structure of the solar cell module which concerns on this invention. (A), (b) is sectional drawing explaining a mode that a solar cell module is inserted in the fixing device of the solar cell module which concerns on this invention. It is a partially expanded sectional view explaining the mode of the water stop by the elastic member (water stop cover) of the fixing device of the solar cell module which concerns on this invention. (A), (b) is the schematic explaining the operator's state which fixes a solar cell module on a roof, (a) is a conventional construction method, (b) is the fixing device of the solar cell module which concerns on this invention The construction method using is shown. It is a partially expanded sectional view which illustrates typically other embodiment of the fixing device of the solar cell module which concerns on this invention. It is a partially expanded sectional view which illustrates still other embodiment of the fixing device of the solar cell module which concerns on this invention typically. It is a partially expanded sectional view which illustrates still other embodiment of the fixing device of the solar cell module which concerns on this invention typically. (A), (b) is a top view explaining a mode that several solar cell modules are mixedly arrange | positioned using the fixing device of the solar cell module which concerns on this invention, (a) is a completion figure, (b) ) Is a partial perspective view for explaining the arrangement of each member at that time. It is a perspective view explaining typically other embodiments of an elastic member (water stop cover) in the present invention. It is a perspective view explaining typically other embodiments of an elastic member (water stop cover) in the present invention. It is a perspective view explaining typically other embodiments of an elastic member (water stop cover) in the present invention. It is a perspective view which illustrates typically the example in which the conventional solar cell tile is arrange | positioned in a part of roof. It is sectional drawing which illustrates typically the structural example inserted and fixed to the dug part of the base mount which inserts and fixes the frame part of the conventional solar cell module.

Explanation of symbols

1: Solar cell module 2: Building side frame (installation frame)
3: Eave side frame (installation frame)
4: Eaves side cover 5a: Frame part 6: Water stop cover (elastic member)
6a: Elastic deformation part 6b: Rain return part (water stop area)
6c: Water stop protrusion (water stop region)
7: Insertion port 9: Rainwater 11: Sealing material 12: Building side end cover 13: Screw 14: Projection 20: Base mount 20a: Digging portion 21: Building side frame (installation frame)
22: Building side frame (installation frame)
31: Eave side frame (installation frame)
32: Eave side frame (installation frame)
40: Wood screw 41: Eave side cover 42: Eave side cover 61: Water stop cover (elastic member)
62: Water stop cover (elastic member)
90: roof 91: roof tile 92: tile-integrated solar cell module 93: tile-shaped main body 95: power generation unit 99: building 100: eaves T: arrangement interval W: power generation unit fixing frame

Claims (5)

A fixing device for fixing one end of a solar cell module, which is joined to the installation frame, constitutes a part of the installation frame and an insertion port for the solar cell module, and has a water stop And an elastic member having a region. The fixing device according to claim 1, wherein the water-stop region of the elastic member extends to a lower side of the solar cell module arranged in a tiled manner on the upper stage. The fixing device according to claim 1, wherein the elastic member has a corrosion prevention layer on a surface thereof. A solar cell module fixing structure, wherein the solar cell module is inserted into the insertion port of the fixing device according to claim 1 and pressed into the insertion port by a restoring force of the elastic member. A solar cell module fixing method for fixing one end of a solar cell module, the method comprising: inserting the solar cell module into an insertion port of a fixing device according to claim 1 while deforming the elastic member. A method for fixing a solar cell module.

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