Fixture, solar power generation device fixing structure

Abstract

To provide a fixture to be used for fixing, to a fixing target, a solar power generation device bent along the fixing target and enables the solar power generation device to be easily removed from the state in which the solar power generation device is fixed with the fixture.SOLUTION: A fixture 3 in this invention features a two-leg shape and comprises: a pair of pinch parts 60A, 60B that fixes a solar power generation device 2 to a fixing target 51 by pinching bent parts 52 of the solar power generation device 2 bent along the fixing target 51; and a connection part 61 that connects the pair of pinch parts 60A, 60B. The pair of pinch parts 60A, 60B are provided with hook parts 67A, 67B for locking to-be-locked objects.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fastener for fastening a solar power generation device and a fastening structure for a solar power generation device. [Background technology]

[0002] Conventionally, photovoltaic power generation devices that generate electricity from incident sunlight have been used, but a technology for fixing a photovoltaic power generation device to a fixed object in a state where the photovoltaic power generation device is folded along the fixed object has not yet been established. Patent Document 1 discloses a technology for fixing a shading sheet to a convex portion called a seam of a folded-plate roof. In Patent Document 1, the shading sheet is fixed to the convex portion by clamping the folded portion of the shading sheet that is folded along the convex portion with fixing metal fittings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-40150 A Summary of the Invention [Problem to be solved by the invention]

[0004] The shading sheet fixed in Patent Document 1 does not normally need to be removed for maintenance, etc. In contrast, a solar power generation device needs to be removed from its fixed object at appropriate times for electrical maintenance, replacement, etc. Therefore, a particular issue of solar power generation devices is that a technology for fixing a solar power generation device that makes it easy to remove the solar power generation device from its fixed object is required.

[0005] The present invention has been made in consideration of the above matters, and its object is to provide a fixing device for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, which fixing device can be easily removed from the solar power generation device when the solar power generation device has been fixed to the fixing object by the fixing device, and a fixing structure for a solar power generation device that includes the fixing device and the solar power generation device.

[0006] Another object of the present invention is to provide a method for removing a fastener that can easily remove the fastener from the solar power generation device when the solar power generation device has been fixed to the fixing object using the fastener. [Means for solving the problem]

[0007] To achieve the above object, the present invention includes the following subject matter.

[0008] Item 1. A fixing device for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, the fixing portion is bifurcated and includes a pair of clamping portions that clamp a bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions, A fastener in which at least one of the pair of clamping parts is provided with a locking part for locking an object to be locked.

[0009] Item 2. The fixing device according to Item 1, wherein the locking portion is provided on the opposite side of the clamping portion from the connecting portion.

[0010] Item 3. The fixture according to item 1, wherein the locking portion is provided on the connecting portion side of the clamping portion.

[0011] Item 4. One of the clamping parts is provided with a first locking part for locking the first object to be locked, 4. The fastener according to any one of items 1 to 3, wherein the other clamping portion is provided with a second fastening portion for fastening a second object to be fastened, which may be the same as or different from the first object to be fastened.

[0012] Item 5. The one clamping portion has a first side plate portion extending from one end of the connecting portion and the first locking portion protruding from the first side plate portion to the opposite side of the other clamping portion, the other clamping portion has a second side plate portion extending from the other end of the connecting portion and the second locking portion protruding from the second side plate portion to the opposite side of the one clamping portion, The first object to be locked is locked to the first locking portion by inserting a curved portion of the first object to be locked into a recess formed in the first locking portion, Item 5. The fastener according to item 4, wherein the second object is fastened to the second fastening portion by inserting a curved portion of the second object into a recess formed in the second fastening portion.

[0013] Item 6. The fixture according to Item 5, wherein each of the first locking portion and the second locking portion has a through hole that opens into the surface of the recess.

[0014] Item 7. A through hole is formed in each of the pair of clamping parts, The first object to be locked is passed through the through hole formed in one of the clamping portions from the opposite side of the other clamping portion to the other clamping portion, and the curved portion of the first object to be locked is brought into contact with the peripheral portion of the through hole in one of the clamping portions, so that the curved portion of the first object to be locked is locked to the peripheral portion of the through hole in one of the clamping portions that constitutes the first locking portion, Item 5. A fixing device according to item 4, wherein the curved portion of the second object to be locked is locked to the peripheral portion of the through hole in the other clamping portion by passing the curved portion of the second object to be locked from the opposite side of the one clamping portion to the side of the one clamping portion through the through hole formed in the other clamping portion, and bringing the curved portion of the second object into contact with the peripheral portion of the through hole in the other clamping portion.

[0015] Item 8. The connecting portion has an easily deformable portion formed therein, Item 8. The fixing device according to any one of Items 1 to 7, wherein the easily deformable portion causes deformation along the easily deformable portion in the connecting portion by applying an external force to the fixing device that compresses or expands the connecting portion in a direction in which the pair of clamping portions face each other.

[0016] Item 9. The fastener according to any one of Items 1 to 7, wherein the connecting portion has a thin-walled portion that is thinner than the average thickness of the fastener, or a through-hole that penetrates the connecting portion in the thickness direction.

[0017] Item 10. The fixture according to Item 9, wherein the thin-walled portion or the through-hole is located at the boundary between the two branches of the fixture.

[0018] Item 11. A solar power generation device and a fixture according to any one of Items 1 to 10, A fixing structure for a solar power generation device in which the solar power generation device is fixed to the fixing object by clamping the bent portion of the solar power generation device bent along the fixing object between the pair of clamping portions.

[0019] Item 12. The fixing structure for a solar power generation device according to Item 11, wherein the solar power generation device is fixed to the fixing object with a gap between the bent portion and the connecting portion.

[0020] Item 13. The fixing structure for a photovoltaic power generation device according to Item 11 or 12, further comprising a packing formed from an elastic material and covering the bent portion, wherein the bent portion and the packing are sandwiched between the pair of clamping portions, thereby fixing the photovoltaic power generation device to the fixing target.

[0021] Item 14. A method for removing the fixing device from the photovoltaic power generation device using the first and second objects when the photovoltaic power generation device is fixed to the fixing target by the fixing device according to any one of items 1 to 10, The solar power generation device fixed to the fixing object by the fixing tool is in a state where a bent portion of the solar power generation device bent along the fixing object is sandwiched between the pair of clamping portions of the fixing tool, The method for removing the fixing device includes: a locking step of locking the object to be locked to the locking portion; a deformation step of causing a deformation in the fixing tool such that the pair of clamping portions move away from the bent portion of the solar power generation device; and and a removing step of removing the fastener from the bent portion while the fastener portion is in the deformed state. [Effects of the Invention]

[0022] According to the fixture and fixing structure of the present invention, when the photovoltaic power generation device is fixed to the fixing object by the fixture, the fixture can be easily removed from the photovoltaic power generation device.

[0023] According to the method for removing a fastener of the present invention, the fastener can be easily removed from the solar power generation device. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a cross-sectional view showing a fixing structure for a solar power generation device according to an embodiment of the present invention. [Figure 2] Fig. 2(A) is a cross-sectional view showing the solar power generation device in a cut state, Fig. 2(B) is an enlarged view of part a in Fig. 2(A), and Fig. 2(C) is a cross-sectional view showing the power generation unit cut along line AA in Fig. 2(A). [Figure 3] 3A is an enlarged view of the area A in FIG. 1, and FIG. 3B is an enlarged view of the area B in FIG. [Figure 4] FIG. 4 is an enlarged view showing the area C in FIG. [Figure 5]Figure 5 is a schematic diagram showing the process of using a crimping tool to fix a solar power generation device to a fixing object with a fixing device. Figure 5(A) shows the state in which the crimping tool is positioned so that the connecting member of the crimping tool is aligned with the connecting portion of the fixing device, and Figure 5(B) shows the state in which the fixing device has been crimped with the crimping tool to fix the solar power generation device to the fixing object. [Figure 6] Figure 6 is a cross-sectional view showing the process of removing a fixing device from a solar power generation device using a first and second fastening object, where Figure 6(A) shows a state in which the first fastening object is fastened to the first fastening portion of the fixing device and the second fastening object is fastened to the second fastening portion of the fixing device, and Figure 6(B) shows a state in which the fixing device is deformed in such a way that the pair of clamping portions of the fixing device are separated by movement of the first and second fastening objects. [Figure 7] FIG. 7 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. [Figure 8] FIG. 8 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. [Figure 9] Figure 9 is a cross-sectional view showing the process of removing a fixing device from a solar power generation device using a first and second fastening object, where Figure 9(A) shows a state in which the first fastening object is fastened to the first fastening portion of the fixing device and the second fastening object is fastened to the second fastening portion of the fixing device, and Figure 9(B) shows a state in which the fixing device is deformed in such a way that the pair of clamping portions of the fixing device are separated by movement of the first and second fastening objects. [Figure 10] FIG. 10 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. [Figure 11] FIG. 11 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing a fixing structure 1 for a solar power generation device 2 according to an embodiment of the present invention.

[0026] A fixing structure 1 according to an embodiment of the present invention includes a solar power generation device 2, a fixing device 3, and a packing 4. In the fixing structure 1, a folded portion 52 of the solar power generation device 2 that is folded along the "convex portion 51 of the folded roof 50" and the packing 4 that covers the folded portion 52 are sandwiched between a pair of clamping portions 60A, 60B of the fixing device 3, whereby the solar power generation device 2 is fixed to the "convex portion 51 of the folded roof 50" that is the fixing target.

[0027] The folded roof 50 is made up of a plurality of metal plates 54 arranged side by side. In the folded roof 50, the side edges 54a, 54b of two adjacent metal plates 54A, 54B are bent upward, and the side edge 54a of one metal plate 54A is wrapped around the outside of the side edge 54b of the other metal plate 54B, so that the side edges 54a, 54b form the above-mentioned protrusion 51, connecting the two adjacent metal plates 54A, 54B.

[0028] The packing 4 is a sheet material made of an elastic material and is arranged to cover the bent portion 52 of the solar power generation device 2. Examples of elastic materials that can be used to form the packing 4 include polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polyvinyl fluoride (PVF), ethylene propylene diene terpolymer (EPDM), natural rubber (NR), chloroprene rubber (CR), nitrile rubber (NBR), Creseed, butyl rubber (IIR), urethane rubber (U), silicone rubber, fluororubber (FKM), styrene butadiene rubber (SBR), glass fiber reinforced thermoplastic resin (FRTP), glass fiber reinforced plastic (GRP), glass fiber reinforced thermoplastic resin (GRTP), and thermoplastic elastomer (TPE).

[0029] (Solar power generation device 2) Fig. 2(A) is a cross-sectional view showing a state in which the solar power generation device 2 is cut. Fig. 2(B) is an enlarged view of part a in Fig. 2(A). Fig. 2(C) is a cross-sectional view showing a state in which the power generation unit 10 is cut along line AA in Fig. 2(A).

[0030] The solar power generation device 2 has a power generation section 10 and a sealant 11 disposed between a barrier sheet 5 and a back sheet 6, and the sealant 11 is filled around the power generation section 10. A sealing edge material 12 is provided on the outer periphery of the solar power generation device 2 to seal between the outer periphery of the barrier sheet 5 and the outer periphery of the back sheet 6. The solar power generation device 2 generates electricity in the power generation section 10 when light irradiated onto the outer surface 7 of the barrier sheet 5 is incident on the power generation section 10.

[0031] The solar power generation device 2 has a sheet shape. In this specification, "sheet shape" refers to a shape in which the thickness of the object is 10% or less of the maximum length between the outer edges in a planar view. For example, if the shape in a planar view is rectangular, the "maximum length between the outer edges in a planar view" refers to the length of the diagonal. Also, for example, if the shape in a planar view is circular, the "maximum length between the outer edges in a planar view" refers to the length of the diameter. In this specification, "sheet shape" also includes membrane, foil, film, etc.

[0032] The solar power generation device 2 is formed in a generally rectangular shape when viewed from above. However, the present invention does not particularly limit the shape of the solar power generation device 2, and the solar power generation device 2 may be, for example, a generally circular shape when viewed from above, an elliptical shape when viewed from above, a polygonal shape when viewed from above, or the like.

[0033] The solar power generation device 2 has flexibility (the property of allowing an object to bend). In the present invention, the solar power generation device 2 having flexibility means that the solar power generation device 2 has a bending strength of 10 MPa or more, or a bending modulus of elasticity of 100 MPa or more. The bending strength of the solar power generation device 2 is more preferably 20 MPa or more, and more preferably 50 MPa or more. The bending strength of the solar power generation device 2 is preferably 200 MPa or less, more preferably 150 MPa or less, and more preferably 50 MPa or less. The bending modulus of elasticity of the solar power generation device 2 is more preferably 500 MPa or more. The bending modulus of elasticity of the solar power generation device 2 is preferably 10,000 MPa or less, and more preferably 5,000 MPa or less. When evaluating the flexibility of the solar power generation device 2 by bending strength, the bending modulus does not have to be within the above range. When evaluating the flexibility of the solar power generation device 2 by bending modulus of elasticity, the bending strength does not have to be within the above range. The bending strength and bending modulus of the solar power generation device 2 are measured in accordance with JIS K 7171. The bending radius of the solar power generation device 2 is preferably 10 cm or less. The bending radius of the solar power generation device 2 is measured using an R caliper (radius measuring device) or the like.

[0034] (Back seat 6) The backsheet 6 has a barrier property against water vapor and a protective property against external forces. The backsheet 6 may be translucent, but is not necessarily translucent. As used herein, "translucent" means that the light transmittance is greater than 15% with respect to the peak wavelength of light before incidence. Examples of materials for the backsheet 6 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, and vinyl resins (e.g., polyvinyl chloride), natural resins, rubber, metals, carbon, and pulp.

[0035] The modulus of longitudinal elasticity of the back sheet 6 is preferably 2400 MPa or more, more preferably 3000 MPa or more. The modulus of longitudinal elasticity of the back sheet 6 is preferably 4200 MPa or less, more preferably 3100 MPa or less. Examples of materials for the back sheet 6 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, and vinyl resins (e.g., polyvinyl chloride). In addition to synthetic resins, materials for the back sheet 6 may also include natural resins, rubber, metals, carbon, and pulp.

[0036] The thickness of the back sheet 6 is preferably 50 μm or more, more preferably 100 μm or more, and is preferably 2000 μm or less, more preferably 1000 μm or less.

[0037] (Power Generation Unit 10) The power generation section 10 includes a power generation cell 20, which is a photoelectric conversion element that utilizes the photovoltaic effect. In this embodiment, the power generation section 10 is configured as a photoelectric conversion unit in which a plurality of power generation cells 20 are arranged in the surface direction of the solar power generation device 2 (for example, in the longitudinal direction or width direction of the solar power generation device 2). Note that the power generation section 10 may be configured with a single power generation cell 20.

[0038] (Power generating cell 20) The power generating cell 20 includes a light-transmitting substrate 21, a light-transmitting conductive layer 22, a power generating layer 23, and an electrode 24. The light-transmitting substrate 21, the light-transmitting conductive layer 22, the power generating layer 23, and the electrode 24 are laminated in this order along the direction from the barrier sheet 5 toward the back sheet 6. In other words, the light-transmitting substrate 21 is disposed opposite the barrier sheet 5, and the electrode 24 is disposed opposite the back sheet 6.

[0039] (Translucent base material 21) The translucent substrate 21 supports the translucent conductive layer 22, the power generation layer 23, and the electrode 24. The translucent substrate 21 is translucent. The translucency of the translucent substrate 21 is sufficient if the light transmittance is greater than 15% with respect to the peak wavelength of the light before incidence, but is preferably 50% or more, and more preferably 80% or more. In this specification, a light transmittance of 80% or more with respect to the peak wavelength of the light before incidence is defined as "transparent."

[0040] Examples of materials for the light-transmitting substrate 21 include inorganic materials, organic materials, and metal materials. Examples of inorganic materials include quartz glass and alkali-free glass. Examples of organic materials include plastics and polymer films such as polyethylene terephthalate (PET), polyethylene naphthalene (PEN), polyethylene, polyimide, polyamide, polyamideimide, liquid crystal polymer, and cycloolefin polymer. Examples of metal materials include stainless steel, aluminum, titanium, and silicon.

[0041] The thickness of the translucent substrate 21 is not particularly limited as long as it can support the translucent conductive layer 22, the power generation layer 23, and the electrodes 24, and may be, for example, 10 μm or more and 300 μm or less.

[0042] The light-transmitting base material 21 is a base material that is needed in the manufacturing process of the power generating cell 20, but is not an essential component. The light-transmitting base material 21 may be used, for example, only during the manufacturing process of the solar power generation device 2, or may be removed after or during manufacturing. When the light-transmitting base material 21 is removed, a base material that does not have light-transmitting properties may be used instead.

[0043] (Transparent conductive layer 22) The light-transmitting conductive layer 22 is a layer having electrical conductivity and functions as a cathode. The light-transmitting conductive layer 22 is light-transmitting. The light-transmitting conductive layer 22 is preferably transparent.

[0044] Examples of the transparent conductive layer 22 include transparent materials such as indium tin oxide (ITO), fluorine-doped tin oxide (FTO), NESA film, etc. The transparent conductive layer 22 is formed on the surface of the transparent substrate by, for example, sputtering, ion plating, plating, coating, etc.

[0045] Alternatively, the translucent conductive layer 22 may be configured to be translucent by forming a light-transmitting pattern using an opaque material. Examples of opaque materials include platinum, gold, silver, copper, aluminum, rhodium, indium, titanium, nickel, tin, zinc, and alloys containing these. Examples of light-transmitting patterns include a lattice pattern, a line pattern, a wavy line pattern, a honeycomb pattern, and a round hole pattern.

[0046] The thickness of the transparent conductive layer 22 is preferably, for example, 30 nm or more and 300 nm or less. When the transparent conductive layer 22 is 30 nm or more and 300 nm or less, good conductivity can be obtained while maintaining high flexibility.

[0047] (Power Generation Layer 23) The power generation layer 23 is a layer that causes photoelectric conversion when irradiated with light, and generates electrons and holes from excitons that are generated by absorbing light. As shown in Fig. 2(B), the power generation layer 23 includes a hole transport layer 30, a photoelectric conversion layer 31, and an electron transport layer 32. The hole transport layer 30, the photoelectric conversion layer 31, and the electron transport layer 32 are stacked in this order along the direction from the translucent conductive layer 22 toward the electrode 24.

[0048] (Hole transport layer 30) The hole transport layer 30 extracts holes generated in the photoelectric conversion layer 31 to the translucent conductive layer 22 and prevents electrons generated in the photoelectric conversion layer 31 from migrating to the translucent conductive layer 22. Examples of materials that can be used for the hole transport layer 30 include metal oxides. Examples of metal oxides include titanium oxide, molybdenum oxide, vanadium oxide, zinc oxide, nickel oxide, lithium oxide, calcium oxide, cesium oxide, and aluminum oxide. Other examples that can be used for the hole transport layer 30 include delafossite-type compound semiconductors (CuGaO), copper oxide, copper thiocyanate (CuSCN), vanadium pentoxide (VO), and graphene oxide. Alternatively, a p-type organic semiconductor or a p-type inorganic semiconductor can be used for the hole transport layer 30.

[0049] The thickness of the hole transport layer 30 is, for example, preferably 1 nm to 1000 nm, more preferably 10 nm to 500 nm, and even more preferably 10 nm to 50 nm. When the thickness of the hole transport layer 30 is 1 nm to 1000 nm, the transport of holes can be achieved.

[0050] (Photoelectric conversion layer 31) The photoelectric conversion layer 31 (photoactive layer) is a layer that photoelectrically converts absorbed light. The material of the photoelectric conversion layer 31 is not particularly limited as long as it can photoelectrically convert absorbed light, and examples thereof include amorphous silicon, perovskite, and non-silicon materials (semiconductor material CIGS). The photoelectric conversion layer 31 may also have a tandem stacked structure that combines these materials. The photoelectric conversion layer 31 that uses a non-silicon material uses the semiconductor material CIGS, which contains copper (Cu), indium (In), gallium (Ga), and selenium (Se), making it easy to reduce the thickness of the photoelectric conversion layer.

[0051] Below, as an example of a case where the power generation unit 10 contains an organic component, a case where a perovskite compound containing an organic component is contained in the photoelectric conversion layer 31 of the power generation unit 10 will be described. The photoelectric conversion layer 31 containing a perovskite compound has the advantage that the dependency of power generation efficiency on the angle of incident light (hereinafter sometimes referred to as incident angle dependency) is relatively low. This allows for higher power generation efficiency to be obtained in this embodiment.

[0052] A perovskite compound is a structure having a perovskite crystal structure or a crystal similar thereto. The perovskite crystal structure is expressed by the composition formula ABX3. In this composition formula, for example, A represents an organic cation, B represents a metal cation, and X represents a halogen anion. However, the A site, B site, and X site are not limited to these.

[0053] The organic group of the organic cation constituting the A site is not particularly limited, and examples thereof include alkylammonium derivatives, formamidinium derivatives, etc. The organic cation constituting the A site may be of one type or of two or more types.

[0054] The metal of the metal cation constituting the B site is not particularly limited, and examples thereof include Cu, Ni, Mn, Fe, Co, Pd, Ge, Sn, Pb, Eu, etc. The metal cation constituting the B site may be of one type or of two or more types.

[0055] The halogen of the halogen anion constituting the X site is not particularly limited, and examples thereof include F, Cl, Br, and I. The halogen anion constituting the X site may be of one type or of two or more types.

[0056] The thickness of the photoelectric conversion layer 31 is, for example, preferably 1 nm or more and 1,000,000 nm or less, more preferably 100 nm or more and 50,000 nm or less, and even more preferably 300 nm or more and 1,000 nm or less. When the thickness of the photoelectric conversion layer 31 is 1 nm or more and 1,000,000 nm or less, the photoelectric conversion efficiency is improved.

[0057] (Electron transport layer 32) The electron transport layer 32 extracts electrons generated in the photoelectric conversion layer 31 to the electrode 24, and prevents holes generated in the photoelectric conversion layer 31 from moving to the electrode 24. The electron transport layer 32 preferably contains, for example, either a halogen compound or a metal oxide.

[0058] Examples of halogen compounds include lithium halides (LiF, LiCl, LiBr, LiI) and sodium halides (NaF, NaCl, NaBr, NaI). Elements constituting metal oxides include titanium, molybdenum, vanadium, zinc, nickel, lithium, potassium, cesium, aluminum, niobium, tin, and barium. Furthermore, n-type organic semiconductors or n-type inorganic semiconductors can also be used as the material for the electron transport layer 32.

[0059] The thickness of the electron transport layer 32 is, for example, preferably 1 nm or more and 1000 nm or less, more preferably 10 nm or more and 500 nm or less, and even more preferably 10 nm or more and 50 nm or less. When the thickness of the electron transport layer 32 is 1 nm or more and 1000 nm or less, electron transport can be achieved.

[0060] (electrode 24) The electrode 24 is conductive and functions as an anode. The electrode 24 can extract electrons from the photoelectric conversion layer 31 in response to photoelectric conversion caused by the photoelectric conversion layer 31. The electrode 24 may be formed of a light-transmitting material or a light-opaque material. However, forming the electrode 24 from a light-opaque material can further improve the light-blocking properties of the solar power generation device 2 (i.e., can further prevent light from the side opposite the surface 7 from entering the power generation unit 10). Examples of materials for the electrode 24 include platinum, gold, silver, copper, aluminum, rhodium, indium, titanium, nickel, tin, zinc, and alloys containing any of these.

[0061] (Barrier Sheet 5) The barrier sheet 5 is translucent and, as described above, constitutes the surface 7 of the solar power generation device 2. The barrier sheet 5 is preferably transparent. The barrier sheet 5 has a barrier property against water vapor and a protective property against external forces.

[0062] The barrier sheet 5 is flexible. The material used for the barrier sheet 5 preferably has a modulus of longitudinal elasticity of 100 Pa or more and 10,000 MPa or less, and more preferably 1,000 MPa or more and 5,000 MPa or less. Specific examples of materials for the barrier sheet 5 include plastic films, vinyl films, etc.

[0063] The thickness of the barrier sheet 5 is preferably 50 μm or more, and more preferably 100 μm or more. The thickness of the barrier sheet 5 is preferably 2000 μm or less, and more preferably 1000 μm or less. When the thickness of the barrier sheet 5 is 50 μm or more and 2000 μm or less, the bending strength of the solar power generation device 2 can be easily set to 50 MPa or more and 150 MPa or less.

[0064] (Sealant 11) The sealant 11 prevents water from seeping into the power generation layer 23 from around the power generation layer 23. The sealant 11 is translucent and is preferably transparent. Note that the sealant 11 does not necessarily have to cover the entire power generation section 10. For example, if a portion of the power generation section 10 is exposed from the sealant 11, the exposed portion may be covered with a sealing edge material 12 or the like.

[0065] Examples of materials for the sealant 11 include ethylene vinyl acetate (EVA), polyolefin, butyl rubber, silicone resin, polyvinyl butyral, acrylic resin, polyisobutylene resin, SBS resin, SIBS resin, and epoxy resin.

[0066] The transverse elastic modulus of the sealant 11 is preferably 0.01 to 500 MPa, more preferably 0.05 to 250 MPa, and even more preferably 0.1 to 100 MPa. This allows the sealant 11 to deform in the planar direction in response to thermal expansion and contraction caused by the temperature difference between the back sheet 6 and the barrier sheet 5. This makes it possible to prevent the back sheet 6 and the barrier sheet 5 from peeling off from the sealant 11 due to shear stress caused by thermal expansion and contraction. The "transverse elastic modulus" referred to in this application is a value calculated from, for example, the longitudinal elastic modulus and Poisson's ratio obtained by a tensile test method.

[0067] From another perspective, the viscosity of sealant 11 can also be specified. The viscosity of sealant 11 is preferably 11,000 mPa·S or more and 700,000 mPa·S or less, more preferably 26,000 mPa·S or more and 450,000 mPa·S or less, and even more preferably 40,000 mPa·S or more and 110,000 mPa·S or less.

[0068] In this case, examples of the material for the sealant 11 include polyolefin, butyl rubber, silicone resin, polyvinyl butyral, acrylic resin, polyisobutylene resin, etc. The "viscosity" referred to in this specification is a value measured at an ambient temperature of 23°C in accordance with the rotational viscometer method of JIS Z8803.

[0069] The back sheet 6 and the barrier sheet 5 are bonded via the sealant 11, and the adhesive strength is preferably 0.1 N / 10 mm or more and 10 N / 10 mm or less in a peel test. In particular, when the solar power generation device 2 is installed in a bent state, the shear stress generated in the solar power generation device 2 becomes larger, so by adopting an adhesive strength in the above range in the peel test, peeling can be effectively suppressed for a long period of time. The peel test is performed in accordance with JIS Z 0237.

[0070] From the viewpoint of enhancing the effect of preventing peeling, the thickness of the sealant 11 is preferably 10 μm or more, more preferably 30 μm or more, and even more preferably 50 μm or more. On the other hand, the thickness of the sealant 11 is preferably 300 μm or less, more preferably 200 μm or less, and even more preferably 100 μm or less. By making the thickness of the sealant 11 10 μm or more, it is possible to ensure a sufficient escape margin for shear stress during thermal expansion and contraction. By making the thickness of the sealant 11 300 μm or less, it is possible to reduce the weight of the solar power generation device 2, thereby improving installation and workability.

[0071] The sealant 11 is not necessarily required and may not be provided. When the sealant 11 is not provided, the solar power generation device 2 may be configured such that, for example, only the power generation unit 10 is disposed between the barrier sheet 5 and the back sheet 6, and the barrier sheet 5 and the back sheet 6 are each adhered to the power generation unit 10.

[0072] (Sealing edge material 12) The sealing edge material 12 has a structure in which a first adhesive portion 40 adhered to the outer surface 7 of the barrier sheet 5, a sealing portion 41 that seals the space between the outer edge of the barrier sheet 5 and the outer edge of the back sheet 6, and a second adhesive portion 42 adhered to the outer surface 8 of the back sheet 6 are connected in sequence.

[0073] Examples of the material for the sealing edge material 12 include tape materials made of butyl rubber, silicone rubber, and the like.

[0074] The sealing edge material 12 is not necessarily required. For example, the edge of the barrier sheet 5 may be folded toward the back sheet 6, and the folded tip may be joined to the back sheet 6. Alternatively, the edge of the back sheet 6 may be folded toward the barrier sheet 5, and the folded tip may be joined to the barrier sheet 5. If this is done, the sealing edge material 12 will not be necessary.

[0075] (Action of solar power generation device 2) In the solar power generation device 2 described above, when light irradiating the outer surface 7 of the barrier sheet 5 enters the power generation section 10, the photoelectric conversion layer 31 of the power generation layer 23 absorbs the light and performs photoelectric conversion, generating electrons and holes in the photoelectric conversion layer 31. The electrons are extracted to the electrode 24 (anode) via the electron transport layer 32, and the holes are extracted to the translucent conductive layer 22 (cathode) via the hole transport layer 30, causing a current to flow from the translucent conductive layer 22 to the electrode 24 (i.e., power generation is performed).

[0076] In the photovoltaic conversion unit constituting the power generation section 10, an extension 24a is provided on the electrode 24 (anode) of each power generation cell 20 (FIG. 2(C)). The extension 24a of the electrode 24 extends toward the translucent conductive layer 22 (cathode). In two adjacent power generation cells 20, 20, the extension 24a of the electrode 24 of one cell 20 is joined to the translucent conductive layer 22 of the other cell 20. Due to this joining, while the solar power generation device 2 is irradiated with light, a current flows from the translucent conductive layer 22A at one end of the power generation section 10 (photovoltaic conversion unit) to the electrode 24A at the other end of the power generation section 10 (the current flow is indicated by an arrow in FIG. 2(C)). The current is extracted via a power distribution line (not shown).

[0077] By configuring the power generation section 10 from the above-described photoelectric conversion unit, the amount of electricity extracted from the power generation section 10 can be stabilized even if a malfunction occurs in some of the power generation cells 20.

[0078] Instead of providing the extension 24a on the electrode 24 (anode) of each power generating cell 20, an extension extending toward the electrode 24 (anode) may be provided on the translucent conductive layer 22 (cathode) of each power generating cell 20. In this case, between two adjacent power generating cells 20, 20, the extension of the translucent conductive layer 22 of one cell 20 is joined to the electrode 24 of the other cell 20. In this way, the same effect as above can be obtained.

[0079] Furthermore, when providing the power generation unit 10 with a translucent base material 21, it is preferable to support the translucent conductive layer 22, power generation layer 23, and electrode 24 of each power generation cell 20 on a common translucent base material 21, as shown in Figure 3(C), in order to facilitate the manufacture of the power generation unit 10.

[0080] Furthermore, when the power generating section 10 is configured by one power generating cell 20, the current flowing from the electrode 24 to the translucent conductive layer 22 is extracted via a power distribution line.

[0081] The solar power generation device 2 may include a plurality of power generation units 10. In this case, the plurality of power generation units 10 are arranged in the surface direction of the solar power generation device 2 and are electrically connected in series or in parallel.

[0082] When the power generation units 10 are composed of photoelectric conversion units, in order to connect multiple power generation units 10 in series, the translucent conductive layer 22A at an end of one of two adjacent power generation units 10 is connected via a power distribution line to the electrode 24A at the end of the other power generation unit 10. When connecting multiple power generation units 10 in parallel, the translucent conductive layers 22A at the ends of two adjacent power generation units 10 are connected to each other via a power distribution line, and the electrodes 24A at the ends of the two adjacent power generation units 10 are connected to each other via a power distribution line.

[0083] Furthermore, when the power generation unit 10 is composed of one power generation cell 20, in order to connect a plurality of power generation units 10 in series, the translucent conductive layer 22 of one of two adjacent power generation units 10 is connected to the electrode 24 of the other power generation unit 10 via a power distribution line. When connecting a plurality of power generation units 10 in parallel, the translucent conductive layers 22 of two adjacent power generation units 10 are connected to each other and the electrodes 24 of the two adjacent power generation units 10 are connected to each other via a power distribution line.

[0084] Whether the power generation section 10 is composed of the above-mentioned photoelectric conversion unit or a single power generation cell 20, the distance between adjacent power generation sections 10, 10 may be greater than 0 mm, and is preferably 2 mm or more, more preferably 5 mm or more, more preferably 10 mm or more, and even more preferably 15 mm or more. The distance between adjacent power generation sections 10, 10 is preferably 100 mm or less, more preferably 50 mm or less, and even more preferably 20 mm or less.

[0085] In order to avoid damage to the power generation section 10, it is preferable that the power generation section 10 be provided in an area of ​​the solar power generation device 2 other than the bent section 52.

[0086] (fixture 3) 1, the fixing device 3 is bifurcated and has a pair of clamping portions 60A, 60B that sandwich the bent portion 52 of the solar power generation device 2 covered with the packing 4, and a connecting portion 61 that connects the pair of clamping portions 60A, 60B. The fixing device 3 can fix the solar power generation device 2 to the protruding portion 51 (the object to be fixed) of the folded roof 50 by sandwiching the bent portion 52 between the pair of clamping portions 60A, 60B. In the fixing structure 1 according to this embodiment, the bent portion 52 of the solar power generation device 2 is covered with the packing 4, so that the solar power generation device 2 is fixed to the protruding portion 51 (the object to be fixed) with a gap equal to or greater than the thickness of the packing 4 between the bent portion 52 and the connecting portion 61 of the fixing device 3.

[0087] Linking portion 61 is a portion of fastener 3 that includes a bifurcated boundary 63 of fastener 3, and positions 64A, 64B of fastener 3 that form a corner when bent portion 52 and packing 4 are sandwiched between a pair of clamping portions 60A, 60B are defined as both ends of linking portion 61. In this embodiment, fastener 3 has a line-symmetric bifurcated shape in the state before bent portion 52 and packing 4 are sandwiched between clamping portions 60A, 60B (the state shown by the two-dot chain line in FIG. 1), so that bifurcated boundary 63 of fastener 3 (hereinafter simply referred to as bifurcated boundary 63) is located on a plane that divides fastener 3 line-symmetrically. Furthermore, in this embodiment, the above-mentioned corners forming the ends 64A, 64B of the connecting portion 61 are formed in advance in the fixing device 3, but the corners forming the ends 64A, 64B of the connecting portion 61 may also be created by clamping the bent portion 52 and the packing 4 with a pair of clamping portions 60A, 60B (in this case, the range of the connecting portion 61 can be identified by clamping the bent portion 52 and the packing 4 with a pair of clamping portions 60A, 60B to create the corners forming the ends 64A, 64B).

[0088] One clamping portion 60A extends from one end 64A of connecting portion 61 and is a portion that forms part of one leg of fixing device 3 (i.e., a portion of one leg of fixing device 3 that is further than end 64A). The other clamping portion 60B extends from the other end 64B of connecting portion 61 and is a portion that forms part of the other leg of fixing device 3 (i.e., a portion of the other leg of fixing device 3 that is further than end 64B).

[0089] In the fastener 3 of this embodiment, before the clamping portions 60A and 60B sandwich the bent portion 52 and the packing 4 (the state of the fastener 3 shown by the two-dot chain line in FIG. 1), the connecting portion 61 has a shape that is bent at an obtuse angle at the bifurcated boundary 63. In this embodiment, one clamping portion 60A has a first side plate portion 66A extending from an end 64A of the connecting portion 61, a first locking portion 67A that protrudes from the tip of the first side plate portion 66A to the opposite side of the clamping portion 60B (the left side in FIG. 1), and a first claw portion 68A that protrudes from the tip of the first side plate portion 66A to the clamping portion 60B side (the right side in FIG. 1). The first side plate portion 66A and the second side plate portion 66B are parallel to each other in the state before the bent portion 52 and the packing 4 are clamped by the clamping portions 60A and 60B (the state of the fixing device 3 shown by the two-dot chain line in FIG. 1).

[0090] The shape of the fastener 3 is not limited to the above-described shape, and may be changed to various bifurcated shapes depending on the shape of the bent portion 52, etc. For example, before the clamping portions 60A and 60B sandwich the bent portion 52 and the packing 4, the connecting portion 61 may have a shape that bends at an acute angle at the bifurcated boundary 63, an arc shape, a wavy shape, or a straight shape. Furthermore, before the clamping portions 60A and 60B sandwich the bent portion 52 and the packing 4, the first side plate portion 66A and the second side plate portion 66B do not have to be parallel, and may be inclined so that they move apart or approach each other toward the tip ends of the first side plate portion 66A and the second side plate portion 66B (the opposite side of the connecting portion 61 (the lower side in FIG. 1 )). In addition, in this embodiment, first claw portion 68A and second claw portion 68B are provided as parts of the fixing device 3 that bite into the gasket 4, but first claw portion 68A and second claw portion 68B are not necessarily required and may be omitted.

[0091] 3A is an enlarged view of the area A in FIG. 1, and FIG. 3B is an enlarged view of the area B in FIG.

[0092] The first locking portion 67A and the second locking portion 67B are provided to facilitate removal of the fixing device 3 from the solar power generation device 2 (the fixing device 3 is removed for electrical maintenance, replacement, etc. of the solar power generation device 2). The first locking portion 67A has a recess 70A (FIGS. 3(A) and 6) formed therein for inserting the curved portion 201A of the first locking object 200A shown in FIG. 6. The second locking portion 67B has a recess 70B (FIGS. 3(A) and 6) formed therein for inserting the curved portion 201B of the second locking object 200B shown in FIG. 6. The first locking object 200A and the second locking object 200B shown in FIG. 6 are rods or plates made of metal or resin, and the tip of the first locking object 200A is constituted by the curved portion 201A, and the tip of the second locking object 200B is constituted by the curved portion 201B.

[0093] In this embodiment, first locking portion 67A is formed in a bent shape, extending from first side plate portion 66A to the opposite side of clamping portion 60B (left side in FIGS. 1 and 3(A)) and then extending toward connecting portion 61 (upper side in FIGS. 1 and 3(A)), so that first locking portion 67A has recessed portion 70A recessed on the opposite side of connecting portion 61 (lower side in FIGS. 1 and 3(A)). Furthermore, second locking portion 67B is formed in a bent shape, extending from second side plate portion 66B to the opposite side of clamping portion 60A (right side in FIGS. 1 and 3(B)) and then extending toward connecting portion 61 (upper side in FIGS. 1 and 3(B)), so that second locking portion 67B has recessed portion 70B recessed on the opposite side of connecting portion 61 (lower side in FIGS. 1 and 3(B)).

[0094] In this embodiment, as shown in Fig. 3(A), the first locking portion 67A has a through-hole 72A that opens to the surface 71A of the recess 70A, and as shown in Fig. 3(B), the second locking portion 67B has a through-hole 72B that opens to the surface 71B of the recess 70B. The through-holes 72A and 72B are provided to discharge liquid (such as water) that has entered the recesses 70A and 70B.

[0095] The present invention does not limit the shapes of the first locking portion 67A and the second locking portion 67B to the above shapes. For example, the first locking portion 67A may be formed in a bent shape extending from the first side plate portion 66A to the opposite side of the clamping portion 60A (the left side in FIGS. 1 and 3A) and then extending to the opposite side of the connecting portion 61 (the lower side in FIGS. 1 and 3A), so that the first locking portion 67A has a recess 70A recessed toward the connecting portion 61 side (the upper side in FIGS. 1 and 3A). Furthermore, the second locking portion 67B may be formed in a bent shape extending from the second side plate portion 66B to the opposite side of the clamping portion 60A (the left side in FIGS. 1 and 3A) and then extending to the opposite side of the connecting portion 61 (the lower side in FIGS. 1 and 3A), so that the second locking portion 67B has a recess 70A recessed toward the connecting portion 61 side (the upper side in FIGS. 1 and 3A). Furthermore, the first locking portion 67A and the second locking portion 67B may have an arc shape with a recess that is recessed on the side opposite to or toward the connecting portion 61. Furthermore, the through holes 72A, 72B are not necessarily required, and do not have to be formed in the locking portions 67A, 67B.

[0096] 4 is an enlarged view showing an enlarged view of range C in FIG. 1. A deformable portion 80 is formed in connecting portion 61. In the present invention, the deformable portion is "a portion that causes deformation along the deformable portion in connecting portion 61 by applying an external force to fixing device 3 that compresses or expands connecting portion 61 in the direction in which the pair of clamping portions 60A, 60B face each other (the left-right direction in FIGS. 1 and 4)," and the above-mentioned "deformation along the deformable portion" includes compressive deformation, expansion deformation, and breakage of connecting portion 61.

[0097] In the present embodiment, the easily deformable portion 80 is formed in the connecting portion 61 as a thin portion having a thickness T thinner than the average thickness of the fastener 3 (hereinafter, the symbol "80" of the easily deformable portion 80 is used as the symbol for the thin portion). The average thickness of the fastener 3 is calculated by dividing the cross-sectional area of ​​the fastener 3 by the sum of the lengths of the line segments extending through the thickness center of the fastener 3. The sum of the lengths of the line segments extending through the thickness center of the fastener 3 is calculated by adding the lengths of the line segments extending through the thickness center of the connecting portion 61, the line segments extending through the thickness center of the clamping portion 60A, and the line segments extending through the thickness center of the clamping portion 60B. In the present embodiment, the length of the line segment extending through the thickness center of the clamping portion 60A is calculated by adding the lengths of the line segments extending through the thickness centers of the first side plate portion 66A, the first locking portion 67A, and the first claw portion 68A. The length of the line segment extending through the center of thickness of the clamping portion 60B is calculated by adding the lengths of the line segments extending through the centers of thickness of the second side plate portion 66B, the second locking portion 67B, and the second claw portion 68B.

[0098] In this embodiment, as shown in Fig. 4, a recess 81 recessed in the thickness direction of the connecting portion 61 is formed in the connecting portion 61, thereby forming a thin-walled portion 80 (easily deformable portion) on the opposite side of the recess 81 in the thickness direction of the connecting portion 61. The cross-sectional shape of the recess 81 is not particularly limited, and may be triangular as in the illustrated example, rectangular, or may have a shape with a rounded outline (such as a semicircular shape). From the viewpoint of preventing the recess 81 from expanding when the solar power generation device 2 is fixed by the fixing device 3, it is preferable that the recess 81 be provided on the side of the clamping portions 60A and 60B of the connecting portion 61 (the lower side in Figs. 1 and 4). Furthermore, from the viewpoint of ensuring that deformation of the connecting portion 61 occurs along the thin-walled portion 80 (easily deformable portion) when the fixing device 3 is removed from the solar power generation device 2, the thickness T (Figure 4) of the thin-walled portion 80 (easily deformable portion) is preferably 75% or less of the average thickness of the fixing device 3, more preferably 50% or less of the average thickness of the fixing device 3, and even more preferably 40% or less of the average thickness of the fixing device 3.

[0099] In addition, in order to ensure that deformation of the connecting portion 61 occurs along the thin-walled portion (easily deformable portion 80) when the fixing device 3 is removed from the solar power generation device 2, it is preferable that the thin-walled portion 80 (easily deformable portion) be located at the bifurcated boundary 63 of the fixing device 3, as shown in the illustrated example.

[0100] Furthermore, the number of thin-walled portions 80 (easily deformable portions) formed in the connecting portion 61 is arbitrary, and one or more thin-walled portions 80 may be formed in the connecting portion 61. When one thin-walled portion 80 (easily deformable portion) is formed in the connecting portion 61, it is preferable that the one thin-walled portion 80 (easily deformable portion) extends over the entire length of the connecting portion 61 in the depth direction of the fixing device 3. When multiple thin-walled portions 80 (easily deformable portions) are formed in the connecting portion 61, it is preferable that the multiple thin-walled portions 80 (easily deformable portions) are arranged at intervals in the depth direction of the fixing device 3. The depth direction of the fixing device 3 mentioned above refers to the direction perpendicular to the cross section of the fixing device 3 (the front-rear direction in FIGS. 1 and 4 ).

[0101] The above-mentioned fastener 3 is made of metal or resin. Examples of metals that can be used to form the fastener 3 include stainless steel (Steel Use Stainless: SUS), steel, aluminum, brass, zinc alloy, and iron. Examples of resins that can be used to form the fastener 3 include synthetic resins such as acrylic, polycarbonate, thermoplastic resin, thermosetting resin, general-purpose plastic, engineering plastic, and vinyl resin (e.g., polyvinyl chloride), natural resin, and rubber.

[0102] In this embodiment, a crimping tool 100 shown in FIG. 5 is used to fix the solar power generation device 2 to the protrusion 51 (fixing target) with the fixing tool 3.

[0103] The crimping tool 100 includes a pair of rod- or plate-shaped tilting members 101A and 101B and a rod- or plate-shaped connecting member 102. One end of the connecting member 102 is connected to one tilting member 101A at an intermediate position via a first hinge 103, and the other end of the connecting member 102 is connected to the other tilting member 101B at an intermediate position via a second hinge 104, so that one tilting member 101A can tilt about the first hinge 103 as an axis, and the other tilting member 101B can tilt about the second hinge 104 as an axis. The symbol 101a in FIG. 5 indicates a region on one side of the first hinge 103 on one tilting member 101A, and the symbol 101b in FIG. 5 indicates a region on one side of the second hinge 104 on the other tilting member 101B. When the fixing device 3 is positioned between the region on one side 101a of one tilting member 101A and the region on one side 101b of the other tilting member 101A, the crimping tool 100 can align the connecting member 102 with the connecting portion 61 as shown in FIG. 5.

[0104] The materials of the members constituting the crimping tool 100 (tilting members 101A and 101B, connecting member 102, first hinge 103, second hinge 104) are not particularly limited, but may be metals such as stainless steel (Steel Use Stainless: SUS), steel, aluminum, brass, zinc alloy, or iron, or synthetic resins such as acrylic, polycarbonate, thermoplastic resin, thermosetting resin, general-purpose plastic, engineering plastic, or vinyl resin (e.g., polyvinyl chloride), natural resin, or resin such as rubber. Here, the crimping tool 100 only needs to be equally hard or harder than the fixing tool 3, and the modulus of elasticity of the crimping tool is preferably 1.0 times or more, more preferably 1.1 times or more, and even more preferably 1.5 times or more, that of the fixing tool 3.

[0105] When fixing the solar power generation device 2 to the convex portion 51 (fixing target) of the folded roof 50 with the fixing device 3, first, a covering step is performed in which the bent portion 52 of the solar power generation device 2 bent along the bent portion 51 (fixing target) is covered with the packing 4, and the fixing device 3 is placed over the bent portion 52 covered with the packing 4 so that the bent portion 52 covered with the packing 4 is inserted into the space between the pair of clamping portions 60A, 60B. Note that from the viewpoint of being able to remove the fixing device 3 without damaging the solar power generation device 2, it is preferable that in the covering step, the fixing device 3 is placed over the bent portion 52 so that a gap is created between the bent portion 52 of the solar power generation device 2 and the connecting portion 61 of the fixing device 3. In this embodiment, covering the bent portion 52 with the packing 4 necessarily creates a gap that is equal to or greater than the thickness of the packing 4 between the bent portion 52 and the connecting portion 61 of the fixing device 3.

[0106] Next, as shown in Figure 5(A), an arrangement process is carried out in which the fixing device 3 is positioned between one side area 101a of one tilting member 101A and one side area 101b of the other tilting member 101B, and the crimping device 100 is arranged so that the connecting member 102 is along the connecting portion 61.

[0107] Next, as shown in Figure 5(B), an operation is performed to tilt the pair of tilting members 101A, 101B so that one side ranges 101a, 101b of the pair of tilting members 101A, 101B approach each other, and the pair of tilting members 101A, 101B presses the pair of clamping portions 60A, 60B to crimp the fixing device 3, whereby the gasket 4 and the folded portion 52 are clamped between the pair of clamping portions 60A, 60B, and the solar power generation device 2 is fixed to the convex portion 51 (fixing object) of the folded roof 50, thereby performing a fixing process.

[0108] When removing the fixing device 3 from the solar power generation device 2 after the solar power generation device 2 has been fixed to the convex portion 51 (fixing object) by the fixing device 3 (i.e., after the bent portion 52 of the solar power generation device 2, which is bent along the convex portion 51 (fixing object) is clamped between the pair of clamping portions 60A, 60B), first, as shown in Figure 6 (A), the bent portion 201A of the first interlocking object 200A is inserted into the recess 70A of the first interlocking portion 67A to interlock the first interlocking object 200A with the first interlocking portion 67A, and the bent portion 201B of the second interlocking object 200B is inserted into the recess 70B of the second interlocking portion 67B to interlock the second interlocking object 200B with the second interlocking portion 67B, an interlocking process is carried out.

[0109] 6(B), a deformation step is carried out in which the first and second objects to be locked 200A and 200B are moved in a direction away from the bent portion 52 of the solar power generation device 2, thereby causing a deformation in which the pair of clamping portions 60A, 60B are separated (the arrows shown in FIG. 6(B) indicate the direction in which the first and second objects to be locked 200A and 200B are moved). At this time, the movement of the objects to be locked 200A and 200B applies an external force to the fixing device 3 that stretches the connecting portion 61, and this also causes deformation (such as breakage) of the connecting portion 61 along the thin-walled portion 80 (easily deformable portion).

[0110] Next, in a state where the above-described deformation has occurred in the fixing device 3, a removal step is carried out in which the fixing device 3 is removed from the bent portion 52 of the solar power generation device 2.

[0111] It should be noted that the present invention does not require the use of the crimping tool 100 in the operation of fixing the solar power generation device 2 to the convex portion 51 (fixing object) using the fixing tool 3, or the use of the first fastening object 200A and the second fastening object 200B in the operation of removing the fixing tool 3 from the solar power generation device 2; the above operations may be performed using tools other than the crimping tool 100 and the fastening objects 200A and 200B.

[0112] According to the fixing device 3 and fixing structure 1 of this embodiment, by fixing the first object to be fixed 200A to the first locking portion 67A and fixing the second object to be fixed 200B to the second locking portion 67B, and causing the fixing device 3 to deform so that the pair of clamping portions 60A, 60B move away from each other due to the movement of the objects to be fixed 200A, 200B, the fixing device 3 can be made into a shape that makes it easy to remove from the bent portion 52 of the solar power generation device 2. This makes it possible to easily remove the fixing device 3 from the solar power generation device 2.

[0113] Furthermore, according to the fixing structure 1 of this embodiment, the solar power generation device 2 is fixed to the protrusion 51 (fixing target) with a gap between the bent portion 52 and the connecting portion 61, which prevents the connecting portion 61, which has been deformed such as broken, from coming into contact with the bent portion 52 of the solar power generation device 2. Therefore, it is possible to remove the fixing device 3 without damaging the bent portion 52 of the solar power generation device 2. Furthermore, according to the fixing structure 1 of this embodiment, the bent portion 52 is covered with the packing 4, which also prevents damage to the bent portion 52.

[0114] 5, the fixing method for the solar power generation device 2 according to the present embodiment involves placing the crimping tool 100 so that the connecting member 102 is along the connecting portion 61, and then pressing the pair of clamping portions 60A, 60B with the pair of tilting members 101A, 101B to crimp the fixing device 3, thereby preventing deformation along the thin-walled portion 80 (easily deformable portion) due to the force applied to the pair of clamping portions 60A, 60B by the pair of tilting members 101A, 101B. This allows the solar power generation device 2 to be fixed to the protrusion 51 (fixed object) without causing deformation along the thin-walled portion 80 (easily deformable portion) in the connecting portion 61, thereby ensuring reliable fixation of the solar power generation device 2 to the protrusion 51 (fixed object).

[0115] Furthermore, according to the method for removing the fixing device 3 of this embodiment, a removal process is carried out to remove the fixing device 3 from the bending portion 52 of the solar power generation device 2 when the fixing device 3 has undergone deformation in which the pair of clamping portions 60A, 60B are separated, so that the fixing device 3 can be easily removed from the solar power generation device 2.

[0116] Furthermore, according to the method for removing the fixing device 3 of this embodiment, an external force that stretches the connecting portion 61 is applied to the fixing device 3, causing deformation of the connecting portion 61 along the thin-walled portion 80 (easily deformable portion), so that the fixing device 3 can be easily removed from the solar power generation device 2.

[0117] The present invention is not limited to the above-described embodiment and may be modified in various ways. Modifications of the present invention will be described below. In the following, components corresponding to those shown in the above-described embodiment will be assigned the same reference numerals as those in the above-described embodiment, and detailed descriptions thereof will be omitted.

[0118] For example, in the above embodiment, an example was shown in which first locked object 200A and second locked object 200B are used to remove fixture 3 from solar power generator 2. However, if first locking portion 67A and second locking portion 67B have the same shape, a single locked object may be used to remove fixture 3 from solar power generator 2. In this case, to remove fixture 3, a first locking step is first performed in which the bent portion of the locked object is inserted into recess 70 of one of locking portions 67A, 67B to lock the locked object to one of locking portions 67A, 67B. Next, a first deformation step is performed in which the locked object is moved in a direction away from bent portion 52 of solar power generator 2, thereby deforming one of the pair of clamping portions 60A, 60B and separating them. Next, a second locking step is performed in which the bent portion of the object to be locked is inserted into the recess 70 of the other of the locking portions 67A, 67B, thereby locking the object to be locked to the other of the locking portions 67A, 67B. Next, a second deformation step is performed in which the object to be locked is moved in a direction away from the bent portion 52 of the solar power generation device 2, thereby deforming the other of the pair of clamping portions 60A, 60B, further separating the pair of clamping portions 60A, 60B. Next, a removal step is performed in which the fixing device 3 is removed from the bent portion 52 of the solar power generation device 2.

[0119] Furthermore, only one of the clamping portions 60A, 60B may be provided with a locking portion 67 for locking an object to be locked (i.e., one of the first locking portion 67A and the second locking portion 67B may be omitted). Even in this case, the object to be locked to the locking portion 67 may be moved in a direction away from the bent portion 52 of the solar power generation device 2, thereby causing deformation of one of the pair of clamping portions 60A, 60B that separates the pair of clamping portions 60A, 60B, thereby making it possible to easily remove the fixing device 3 from the solar power generation device 2.

[0120] In addition, in the above embodiment, an example was shown in which the first locking portion 67A is provided at the tip of the first side plate portion 66A (the end of the first side plate portion 66A on the "opposite side of the connecting portion 61 (lower side in Figure 1)") and the second locking portion 67B is provided at the tip of the second side plate portion 66B (the end of the second side plate portion 66B on the "opposite side of the connecting portion 61 (lower side in Figure 1)"), but the first locking portion 67A can be provided at any position on the "opposite side of the connecting portion 61 (lower side in Figure 1)" of the clamping portion 60A, and the second locking portion 67B can be provided at any position on the "opposite side of the connecting portion 61 (lower side in Figure 1)" of the clamping portion 60B. Also, as shown in Figure 7, the first locking portion 67A may be provided on the connecting portion 61 side (upper side in Figure 7) of the clamping portion 60A, and the second locking portion 67B may be provided on the connecting portion 61 side (upper side in Figure 7) of the clamping portion 60B.

[0121] 8 and 9, a pair of clamping portions 60A, 60B may have through holes 90A, 90B formed therein, respectively, so that a peripheral portion 91A of the through hole 90A in one clamping portion 60A serves as a first locking portion for locking a curved portion 201A of the first object to be locked 200A, and a peripheral portion 91B of the through hole 90B in the other clamping portion 60B serves as a second locking portion for locking a curved portion 201B of the second object to be locked 200B. Hereinafter, "the peripheral portion 91A of the through-hole 90A in the clamping portion 60A" will be referred to as "first locking portion 91A", and "the peripheral portion 91B of the through-hole 90B in the clamping portion 60B" will be referred to as "second locking portion 91B".

[0122] In the above case, the curved portion 201A of the first object to be locked 200A is capable of passing through the through-hole 90A, and the curved portion 201B of the second object to be locked 200B is capable of passing through the through-hole 90B.

[0123] After the solar power generation device 2 has been fixed to the convex portion 51 (fixing object) by the fixing device 3 (i.e., the bent portion 52 of the solar power generation device 2, which has been bent along the convex portion 51 (fixing object), is clamped between the pair of clamping portions 60A, 60B), when removing the fixing device 3 from the solar power generation device 2, a locking process is carried out in which the bent portion 201A of the first object to be locked 200A is locked to the first locking portion 91A by the following operation 1, and the bent portion 201B of the second object to be locked 200B is locked to the second locking portion 91B by the following operation 2 (Figure 9(A)).

[0124] Step 1: Pass the curved portion 201A of the first object to be locked 200A through the through hole 90A formed in the clamping portion 60A from the "opposite side of the clamping portion 60B (left side in Figures 8 and 9)" to the "side of the clamping portion 60B (right side in Figures 8 and 9)," so that the curved portion 201A of the first object to be locked 200A is in contact with the first locking portion 91A (the peripheral portion of the through hole 90A in the clamping portion 60A), thereby locking the curved portion 201A of the first object to be locked to the first locking portion 91A. Step 2: Pass the curved portion 201B of the second object to be locked 200B through the through hole 90B formed in the clamping portion 60B from the "opposite side of the clamping portion 60A (right side in Figures 8 and 9)" to the "side of the clamping portion 60A (right side in Figures 8 and 9)," so that the curved portion 201B of the second object to be locked 200B is in contact with the second locking portion 91B (the peripheral portion of the through hole 90B in the clamping portion 60B), thereby locking the curved portion 201B of the second object to be locked to the second locking portion 91B.

[0125] Next, a deformation step is performed in which the first and second interlocked objects 200A and 200B are moved in a direction away from the bent portion 52 of the solar power generation device 2, thereby causing a deformation in which the pair of clamping portions 60A, 60B are separated from each other.

[0126] Next, in a state where the above-described deformation has occurred in the fixing device 3, a removal step is carried out in which the fixing device 3 is removed from the bent portion 52 of the solar power generation device 2.

[0127] 8 and 9 show an example in which the through hole 90A and the first locking portion 91A are provided on the "opposite side of the connecting portion 61 (lower side in FIGS. 8 and 9)" of the clamping portion 60A, and the through hole 90B and the second locking portion 91B are provided on the "opposite side of the connecting portion 61 (lower side in FIGS. 8 and 9)" of the clamping portion 60B, but as shown in FIG. 10, the through hole 90A and the first locking portion 91A may be provided on the "side of the connecting portion 61 (upper side in FIGS. 8 and 9)" of the clamping portion 60A, and the through hole 90B and the second locking portion 91B may be provided on the "opposite side of the connecting portion 61 (upper side in FIGS. 8 and 9)" of the clamping portion 60B.

[0128] Note that, in cases where through-hole 90A and through-hole 90B have the same shape, a single locked object may be used to remove fixture 3 from solar power generation device 2. In this case, in order to remove fixture 3, a first locking step is first carried out in which the locked object is locked to one of locking portions 91A, 91B.

[0129] Next, a first deformation step is performed in which the object to be locked is moved in a direction away from the bending portion 52 of the solar power generation device 2, thereby deforming one of the pair of clamping portions 60A, 60B and separating the pair of clamping portions 60A, 60B. Next, a second locking step is performed in which the object to be locked to the other of the locking portions 91A, 91B. Next, a second deformation step is performed in which the object to be locked is moved in a direction away from the bending portion 52 of the solar power generation device 2, thereby deforming the other of the pair of clamping portions 60A, 60B and further separating the pair of clamping portions 60A, 60B. Next, a removal step is performed in which the fixing device 3 is removed from the bending portion 52 of the solar power generation device 2.

[0130] Furthermore, by forming through hole 90 in only one of clamping portions 60A, 60B, only one of clamping portions 60A, 60B may have a locking portion (periphery of through hole 90) that locks the object to be locked. Even in this case, the object to be locked can be moved in a direction away from bent portion 52 of solar power generation device 2 while the object to be locked is locked in the locking portion (periphery of through hole 90), causing "deformation of one of clamping portions 60A, 60B" that separates the pair of clamping portions 60A, 60B, thereby making it possible to easily remove fixture 3 from solar power generation device 2.

[0131] The fixing structure of the present invention may also be a structure in which the packing 4 is omitted (FIG. 11 shows an example in which the packing 4 is omitted from the fixing structure 1 shown in FIG. 1). In this case, the fixing structure of the present invention includes a solar power generation device 2 and a fixing device 3, and the solar power generation device 2 is fixed to the protrusion 51 (fixing target) of the half-height roof 50 by clamping a bent portion 52 of the solar power generation device 2 between a pair of clamping portions 60A, 60B of the fixing device 3.

[0132] Even when the gasket 4 is omitted as described above, the operation of fixing the solar power generation device 2 to the convex portion 51 (fixing object) using the fixing device 3 and the operation of removing the fixing device 3 from the solar power generation device 2 that has been fixed to the convex portion 51 (fixing object) using the fixing device 3 can be performed in the same manner as in the above embodiment.

[0133] In addition, when the gasket 4 is omitted as described above, in the step corresponding to the covering step shown in the embodiment, the fixing device 3 is placed over the folded portion 52 of the solar power generation device 2 bent along the convex portion 51 (fixing object) so that the folded portion 52 is inserted into the space between the pair of clamping portions 60A, 60B, and the steps other than the covering step are carried out in a state where the folded portion 52 is not covered with the gasket 4.

[0134] Furthermore, when the packing 4 is omitted as described above, in order to configure the fixing structure of the present invention to fix the solar power generation device 2 to the convex portion 51 (fixing target) of the folded roof 50 with a gap between the bent portion 52 of the solar power generation device 2 and the connecting portion 61 of the fixing device 3, it is preferable to cover the bent portion 52 with the fixing device 3 so as to leave a gap between the bent portion 52 and the connecting portion 61 of the fixing device 3 in a step corresponding to the covering step described above. In this way, when the connecting portion 61 is caused to deform along the thin-walled portion 80 (easily deformable portion) in a step corresponding to the deformation step described in the above embodiment, the deformed connecting portion 61 can be prevented from coming into contact with the solar power generation device 2, and the fixing device 3 can be removed from the solar power generation device 2 without damaging the solar power generation device 2.

[0135] When packing 4 is omitted as described above, positions 64A, 64B of fastener 3 that form a corner when bent portion 52 is sandwiched between pair of clamping portions 60A, 60B are defined as both ends of connecting portion 61. In the example shown in Fig. 11, before bent portion 52 is sandwiched between clamping portions 60A, 60B, fastener 3 has a line-symmetrical bifurcated shape, and thus bifurcated boundary 63 of fastener 3 is located on a plane that divides fastener 3 line-symmetrically. In the example shown in FIG. 7, the above-mentioned corners forming ends 64A, 64B of connecting portion 61 are formed in advance in fastener 3, but the corners forming ends 64A, 64B of connecting portion 61 may also be created by clamping bent portion 52 with a pair of clamping portions 60A, 60B (in this case, the extent of connecting portion 61 can be identified by clamping bent portion 52 with a pair of clamping portions 60A, 60B to create the corners forming ends 64A, 64B).

[0136] Furthermore, when the packing 4 is omitted as described above, before the clamping portions 60A and 60B sandwich the bent portion 52, the connecting portion 61 may have a shape that bends at an acute angle at the bifurcated boundary 63, an arc shape, a wavy shape, or a straight shape. Furthermore, before the clamping portions 60A and 60B sandwich the bent portion 52, the first side plate portion 66A and the second side plate portion 66B do not have to be parallel (for example, the first side plate portion 66A and the second side plate portion 66B may be inclined so as to move away from or toward the tip ends thereof (the opposite sides of the connecting portion 61)). Furthermore, in the example shown in FIG. 11 , the clamping portions 60A are provided with first claw portions 68A and the clamping portions 60B are provided with second claw portions 68B as portions of the fixing device 3 that bite into the solar power generation device 2. However, the first claw portions 68A and the second claw portions 68B are not necessarily required and may be omitted.

[0137] Furthermore, in the above example, the thin-walled portion 80 forming the easily deformable portion is formed in the connecting portion 61. However, a through-hole (not shown) forming the easily deformable portion may be formed in the connecting portion 61. The through-hole (easily deformable portion) penetrates the connecting portion 61 in its thickness direction, and when an external force that brings the pair of clamping portions 60A, 60B closer together is applied to the fixing device 3, deformation along the through-hole (easily deformable portion) occurs in the connecting portion 61. From the viewpoint of reliably causing the above-mentioned deformation when the fixing device 3 is removed from the solar power generation device 2 that has been fixed to the protrusion 51 (fixing target) by the fixing device 3, it is preferable that the through-hole (easily deformable portion) be formed at the boundary 63 of the fork of the fixing device 3.

[0138] The number of through holes (easily deformable portions) formed in the connecting portion 61 is arbitrary, and one or more through holes (easily deformable portions) may be formed in the connecting portion 61. When one through hole (easily deformable portion) is formed in the connecting portion 61, it is preferable that the length of one through hole in the depth direction of the fixing device 3 is 5% or more of the total length of the connecting portion 61 in the depth direction. When multiple through holes (easily deformable portions) are formed in the connecting portion 61, it is preferable that the multiple through holes are arranged at intervals in the depth direction.

[0139] Furthermore, in the present invention, the object to which the solar power generation device 2 is fixed is not limited to the protruding portion 51 of the folded roof 50. The object to which the solar power generation device 2 is fixed can be various objects along which the folded portion 52 of the solar power generation device 2 (the folded portion of the solar power generation device 2) is aligned. For example, the object to which the solar power generation device 2 is fixed is formed by a portion of a building material along which the folded portion 52 of the solar power generation device 2 is aligned. Examples of building materials include roofing materials other than folded roofs, wall materials (metal siding materials, ceramic siding materials, sandwich panels, etc.), partitions, door materials, fence materials, flooring materials, etc. Examples of the roofing materials include roofing materials used for slate roofs, roof decks, tile roofing, and vertical flat roofing. The roof may be vertically or horizontally tiled. Furthermore, in the present invention, the member having the portion that constitutes the object to be fixed may be a pavement forming a road, or may be a structure such as an automobile, train, or ship. In the illustrated example, the material of the "member having a portion to be fixed" is not particularly limited, and may be, for example, metal, resin, asphalt, or concrete. [Explanation of symbols]

[0140] 1 Fixed structure 2. Solar power generation equipment 3 Fixtures 4. Gasket 51 Convex part of half-height roof (fixed object) 52 Bent portion of solar power generation device 60A,60B clamping part 61 Joint 63 Fixture fork boundary 66A First side plate part 66B Second side plate part 67A First locking part 67B Second locking part 70A Recess of first locking part 70B Recess of second locking portion 71A, 71B Recessed surface 72A Through hole of first locking part 72B Through hole of second locking portion 80 Thin-walled section (easily deformable section) 90A, 90B Through holes in clamping section 91A First locking part 91B Second locking part 200A First locked object 200B Second locked object 201A Bent portion of first object to be fastened 201B Bent portion of second object to be fastened

Claims

1. A fixture for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, the fixing portion is bifurcated and includes a pair of clamping portions that clamp a bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions, A fastener in which at least one of the pair of clamping parts is provided with a locking part for locking an object to be locked.

2. The fixture according to claim 1 , wherein the locking portion is provided on the opposite side of the clamping portion from the connecting portion.

3. The fixture according to claim 1 , wherein the locking portion is provided on the clamping portion on a side of the connecting portion.

4. One of the clamping portions is provided with a first locking portion for locking the first object to be locked, 2. The fixture according to claim 1, wherein the other clamping portion is provided with a second engaging portion for engaging a second object to be engaged, which may be the same as or different from the first object to be engaged.

5. the one clamping portion has a first side plate portion extending from one end of the connecting portion and a first locking portion protruding from the first side plate portion to the opposite side of the other clamping portion, the other clamping portion has a second side plate portion extending from the other end of the connecting portion and a second locking portion protruding from the second side plate portion to the opposite side of the one clamping portion, The first object to be locked is locked to the first locking portion by inserting a curved portion of the first object to be locked into a recess formed in the first locking portion, The fastener according to claim 4, wherein the second object is engaged with the second engaging portion by inserting a curved portion of the second object into a recess formed in the second engaging portion.

6. The fixture according to claim 5 , wherein each of the first and second locking portions has a through hole formed therein that opens onto a surface of the recess.

7. A through hole is formed in each of the pair of clamping portions, The first object to be locked is passed through the through hole formed in one of the clamping portions from the opposite side of the other clamping portion to the other clamping portion, and the curved portion of the first object to be locked is brought into contact with the peripheral portion of the through hole in one of the clamping portions, so that the curved portion of the first object to be locked is locked to the peripheral portion of the through hole in one of the clamping portions that constitutes the first locking portion, 5. The fixing device according to claim 4, wherein the curved portion of the second object to be fastened is passed through the through hole formed in the other clamping portion from the opposite side of the one clamping portion to the side of the one clamping portion, and the curved portion of the second object to be fastened is brought into contact with the peripheral portion of the through hole in the other clamping portion, thereby fastening the curved portion of the second object to the peripheral portion of the through hole in the other clamping portion that forms the second fastening portion.

8. The connecting portion has an easily deformable portion formed therein, 2. The fixing device according to claim 1, wherein the easily deformable portion causes the connecting portion to deform along the easily deformable portion by applying an external force to the fixing device that compresses or expands the connecting portion in a direction in which the pair of clamping portions face each other.

9. The fixture according to claim 1 , wherein the connecting portion is formed with a thin portion having a thickness thinner than an average thickness of the fixture, or with a through hole that penetrates the connecting portion in the thickness direction.

10. The fixture according to claim 9 , wherein the thinned portion or the through hole is located at a boundary between two branches of the fixture.

11. A solar power generation device; The fixture according to claim 1, A fixing structure for a solar power generation device in which the solar power generation device is fixed to the fixing object by clamping the bent portion of the solar power generation device bent along the fixing object between the pair of clamping portions.

12. The fixing structure for a solar power generation device according to claim 11 , wherein the solar power generation device is fixed to the fixing object with a gap between the bent portion and the connecting portion.

13. Further, a packing made of an elastic material and covering the bent portion is provided. The fixing structure for a solar power generator according to claim 11 , wherein the bent portion and the packing are sandwiched between the pair of clamping portions, thereby fixing the solar power generator to the fixing object.

14. 2. A method for removing the fixing device from the photovoltaic power generation device using the first and second fastening objects in a state in which the photovoltaic power generation device is fixed to the fixing target by the fixing device according to claim 1, The solar power generation device fixed to the fixing object by the fixing tool is in a state where a bent portion of the solar power generation device bent along the fixing object is sandwiched between the pair of clamping portions of the fixing tool, The method for removing the fixing device includes: a locking step of locking the object to be locked to the locking portion; a deformation step of causing a deformation in the fixing tool such that the pair of clamping portions move away from the bent portion of the solar power generation device; and and a removing step of removing the fastener from the bent portion while the fastener portion is in the deformed state.

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