Fixing jig, installation structure of photovoltaic apparatus, photovoltaic apparatus installation kit, and installation method of photovoltaic apparatus

Abstract

To provide a fixing tool capable of more firmly fixing a photovoltaic power generation device while suppressing influence on power generation performance and suppressing construction failure, an installation structure of the photovoltaic power generation device using the fixing tool, a photovoltaic power generation device installation kit including the fixing tool, and an installation method of the photovoltaic power generation device using the fixing tool.SOLUTION: A fixing jig 1 used for fixing a photovoltaic power generation device includes a head part 2 for fixing the photovoltaic power generation device 5 from above by holding it, a rod-like pile part 3 connected to the head part 2, and a holding part 4 having unevenness provided in the pile part, wherein the head part 2 and the pile part 3 can be connected and separated by a screw part provided in each of them, and the pile part 3 has a driving part having no screw thread provided above the screw part.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fixing jig, an installation structure for a solar power generation device, an installation kit for a solar power generation device, and an installation method for a solar power generation device. [Background technology]

[0002] Photovoltaic power generation devices, such as solar cell panels made of silicon semiconductors and flexible solar cells made of organic semiconductors, have traditionally been installed on roofs or on installation bases, but in recent years, methods of installing them directly on the ground have been considered.One method of fixing a photovoltaic power generation device to the ground is to drive a stake-shaped fixing jig into the ground so that it penetrates the periphery of the photovoltaic power generation device, and the use of a support stake, such as that described in Patent Document 1, has been considered as the fixing jig. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-013410 Summary of the Invention [Problem to be solved by the invention]

[0004] 1 and 2 are schematic diagrams showing a solar power generation device fixed using a conventional fixing jig. In FIGS. 1 and 2, the upper and lower diagrams are cross-sectional views and top views, respectively. As shown in FIG. 1, when fixing a solar power generation device 5 using a general-purpose fixing jig 1 such as that described in Patent Document 1, in order to increase the fixing strength, at least a portion of the portion driven into the installation surface 6 (hereinafter referred to as the "pile portion") must be thickened to prevent the pile portion from slipping out (hereinafter, the thicker-diameter portion of the pile portion is referred to as the "holding portion"). Therefore, the through-hole (shown as a dashed circle in the top view) drilled in the solar power generation device 5 to pass the fixing jig 1 through must have a larger diameter than the thickest holding portion. Furthermore, with a general-purpose fixing jig 1 such as that described in Patent Document 1, the fixing is performed by pressing the target object against the installation surface from above with a plate-like portion (hereinafter referred to as the "head") located at the top end. However, since the through-hole portion does not contribute to the fixing because there is no place to press it, the area of ​​the head must be increased to increase the fixing strength. However, when the area of ​​the head of the fixing jig is increased as in Patent Document 1, the head of fixing jig 1 overlaps with the power generation section 51 of the solar power generation device 5 as shown in Figure 1, resulting in a problem of reduced power generation efficiency. To address this problem, one method of placing fixing jig 1 between the solar power generation devices as shown in Figure 2 can be considered to reduce the impact on the power generation section, but the placement as shown in Figure 2 requires providing gaps between the solar power generation devices 5, which increases the area required for installation. In particular, as solar power generation devices have become lighter in recent years and larger in area, higher fixing force is required for the fixing jig, making the above problem more pronounced.

[0005] To address this issue, a method has been considered in which the head of the fixing jig and the portion fixed to the installation surface (hereinafter referred to as the pile portion) are designed to be separable and connectable, and the pile portion is first fixed to the installation surface and then the head is attached. This type of fixing jig structure allows the solar power generation system to be installed after the pile portion is driven into the installation surface, and then the head is attached to the pile portion to secure the solar power generation system. Because the solar power generation system is installed after the pile portion is driven, the through-hole size can be made small enough to accommodate the small-diameter pile portion rather than the large-diameter holding portion, making the through-hole smaller. A smaller through-hole size increases the contact area between the head and the solar power generation system, thereby increasing the fixing force. Furthermore, because a higher fixing force can be achieved with a smaller area, the overlap area between the head and the power generation unit of the solar power generation system can be reduced, allowing the solar power generation system to be more firmly fixed while minimizing the impact on power generation performance.

[0006] In the fixing jig having the above structure, the structure for connecting the head and the pile portion is preferably a connection by screw fastening from the viewpoint of ease of operation and strength of connection. On the other hand, in the fixing jig having the above structure, the pile portion is driven into the installation surface using a hammer, but during driving, the threads formed on the pile portion are damaged, making it impossible to connect with the head, or the head is connected in an unintended tilted state, resulting in poor installation.

[0007] The present invention aims to provide a fixing jig that can more firmly fix a solar power generation device while minimizing the impact on power generation performance and that can reduce poor installation, an installation structure for a solar power generation device using the fixing jig, a solar power generation device installation kit that includes the fixing jig, and an installation method for a solar power generation device using the fixing jig. [Means for solving the problem]

[0008] The present invention includes the following Disclosures 1 to 10. The present invention will be described in detail below. [Disclosure 1] A fixing jig used to fix a solar power generation device, a head portion that holds the solar power generation device in place from above; A rod-shaped stake portion connected to the head portion; A holding portion having an unevenness provided in the stake portion, The head portion and the pile portion can be connected and separated by screw portions provided on each portion, A fixing jig characterized in that the pile portion has a driving portion above the screw portion where no threads are provided. [Disclosure 2] The threaded portion of the pile portion is a male thread or a female thread, The fixing jig according to Disclosure 1, wherein the driving portion is formed continuous with the threaded portion. [Disclosure 3] The fixing jig according to Disclosure 1, wherein the threaded portion of the pile portion is a female thread, and the driving portion is provided around the threaded portion of the pile portion. [Disclosure 4] The fixing jig described in any one of Disclosures 1 to 3, characterized in that the holding portion has a portion whose horizontal cross-sectional area is larger than the horizontal cross-sectional area of ​​the portion of the pile portion where the holding portion is not formed. [Disclosure 5] The fixing jig according to any one of Disclosures 1 to 4, wherein the head has a shape including a band when viewed from above in a plan view. [Disclosure 6] The fixing jig according to any one of Disclosures 1 to 5, wherein the size of the head is 1.1 times or more the diameter of a through hole of the photovoltaic power generation device provided to allow the pile portion to pass through. [Disclosure 7] The fixing jig according to any one of Disclosures 1 to 5, wherein the size of the head is 1.1 times or more the diameter of the stake portion. [Disclosure 8] An installation structure for a solar power generation device, characterized in that a fixing jig described in any one of Disclosures 1 to 7 is fixed to an installation surface through a through hole provided in the peripheral portion of the solar power generation device, and the solar power generation device is fixed to the installation surface by a head of the fixing jig. [Disclosure 9] A photovoltaic power generation device installation kit comprising a photovoltaic power generation device and a plurality of fixing jigs according to any one of Disclosures 1 to 7. [Disclosure 10] A method for installing a solar power generation device, comprising the steps of: providing a through hole in a peripheral portion of the solar power generation device; fixing a pile portion and a holding portion of a fixing jig described in any one of Disclosures 1 to 7 to a mounting surface; installing the solar power generation device so that the through hole passes through the pile portion fixed to the installation surface; and attaching a head of the fixing jig to the pile portion to fix the solar power generation device to the installation surface. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a fixing jig that can more firmly fix a solar power generation device while minimizing the impact on power generation performance and can reduce poor installation, an installation structure for a solar power generation device using the fixing jig, a solar power generation device installation kit that includes the fixing jig, and an installation method for a solar power generation device using the fixing jig. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 10 is a schematic diagram illustrating a state in which a photovoltaic power generation device is fixed using a conventional fixing jig. [Figure 2] FIG. 10 is a schematic diagram illustrating a state in which a photovoltaic power generation device is fixed using a conventional fixing jig. [Figure 3] FIG. 10 is a schematic diagram illustrating a state in which a solar power generation device is fixed using the fixing jig of the present invention. [Figure 4] 10A to 10C are schematic diagrams showing examples of the shape of a head portion in a fixing jig of the present invention. [Figure 5] 5A to 5C are schematic diagrams showing examples of shapes of holding portions in the fixing jig of the present invention. [Figure 6] 10A and 10B are schematic diagrams showing examples of driving positions in the fixing jig of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will be described in more detail below, but the present invention is not limited to these embodiments.

[0012] The fixing jig of the present invention is a fixing jig used for fixing a photovoltaic power generation device. Fixing jigs used to secure common sheet-like objects, such as picnic sheets and agricultural sheets, to the ground tend to lack sufficient fixing strength because they were not designed to secure solar power generation equipment. On the other hand, when using conventional fixing jigs with high fixing strength, i.e., with a large head area, the head of the fixing jig can overlap the power generation section of the solar power generation equipment, reducing power generation efficiency. Furthermore, changing the position of the fixing jig to avoid this problem increases the area required for installing the solar power generation equipment. In the present invention, by using a fixing jig with the structure described below, the solar power generation equipment can be firmly fixed to the installation surface without increasing the installation area and minimizing the impact on power generation efficiency.

[0013] The solar power generation device is not particularly limited, and may be a solar cell panel using a silicon semiconductor, or a sheet-like flexible solar cell using an organic semiconductor such as a perovskite solar cell. In particular, flexible solar cells are significantly lighter than solar cell panels using silicon semiconductors and tend to have a larger area, so the effects of the present invention are more pronounced.

[0014] The fixing jig of the present invention has a head portion that presses down on the photovoltaic power generation device from above to fix it in place. The head portion is the part that contacts the top when the fixing jig of the present invention is installed, and the head portion presses the photovoltaic power generation device onto the installation surface from above, thereby fixing the photovoltaic power generation device. In this specification, "down" refers to the direction that faces the installation surface when a photovoltaic power generation device is installed using the fixing jig of the present invention, and "up" refers to the opposite direction of "down," i.e., the direction toward the sky. Furthermore, "horizontal direction" refers to the direction perpendicular to the up-down direction.

[0015] The shape of the head is not particularly limited as long as it has a flat underside to hold the solar power generation device and is not likely to interfere with the power generation unit of the solar power generation device. Examples of shapes that can be used when the head is viewed from above in a planar view include circular, strip-like, and polygonal. A circular head is likely to interfere with the solar power generation device, but can be fixed regardless of the head's orientation, and the lack of corners can reduce damage to the solar power generation device. A strip-like head can be large-area while avoiding interference with the power generation unit of the solar power generation device, thereby increasing the fixing force while further minimizing the impact on power generation performance. Furthermore, even when fixing multiple solar power generation devices, a large area can be used to hold only the non-power generation portions of the solar power generation devices, thereby reducing the area required for installation. In other words, the head preferably has a shape that includes a strip-like shape when viewed from above in a planar view.

[0016] FIG. 4 shows a schematic diagram illustrating an example of the shape of the head of the fixing jig of the present invention. FIG. 4 also shows a top view of a photovoltaic power generation device fixed by the fixing jig of the present invention. FIGS. 4(a) and 4(b) show examples of the shape of the head 2 when fixing a single photovoltaic power generation device to an installation surface using the fixing jig of the present invention. In FIG. 4(a), the head 2 is L-shaped, and in FIG. 4(b), the head 2 is rectangular and strip-shaped. FIGS. 4(c) to 4(e) show the shape of the head 2 when fixing multiple photovoltaic power generation devices. In FIGS. 4(c) and 4(d), the head 2 is wider or longer than in FIG. 4(b), and in FIG. 4(e), the head 2 is T-shaped. By using a head with a shape that includes a strip shape when viewed from above, the area of ​​the head can be increased without interfering with the power generation unit of the photovoltaic power generation device or while minimizing interference. This allows the photovoltaic power generation device to be fixed more firmly while minimizing the impact on power generation performance.

[0017] The size of the head is adjusted appropriately depending on the size of the solar power generation device to be fixed, but it is preferable that it be at least 1.1 times the diameter of the through hole of the solar power generation device that is provided to allow the pile part described below to pass through. By making the size of the head 1.1 times or more larger than the diameter of the through hole to be drilled in the solar power generation device, the solar power generation device can be more firmly fixed. The size of the head is more preferably 1.25 times or more, and even more preferably 1.5 times or more, the diameter of the through hole. There is no particular upper limit to the size of the head, but it is preferably 2.5 times or less from the viewpoint of suppressing interference with the power generation section of the solar power generation device.

[0018] The size of the head is preferably 1.1 times or more the diameter of the stake portion described below. By making the size of the head 1.1 times or more larger than the diameter of the pile, the solar power generation device can be fixed more firmly. The size of the head is more preferably 1.25 times or more, and even more preferably 1.5 times or more, the diameter of the pile, which will be described later. There is no particular upper limit to the size of the head, but it is preferably 2.5 times or less from the viewpoint of suppressing interference with the power generation unit of the solar power generation device.

[0019] As a specific example of the size of the head, if the size of the solar power generation device is 1000 mm x 1000 mm and it is fixed at the four corners as shown in Figure 4(a), the area of ​​the head will be 5 cm 2 More than 500cm 2 When the area of ​​the head is within the above range, the solar power generation device can be more firmly fixed and the handling can be improved. 2 More preferably, it is 100 cm or more. 2 More preferably, it is:

[0020] The thickness (vertical length) of the head portion is adjusted appropriately to a degree that maintains the required strength depending on the size and material of the head portion. Specifically, when the size of the head portion is in the same range as the area of ​​the head portion, the thickness of the head portion is preferably 1 mm or more, more preferably 5 mm or more, and is preferably 30 mm or less, more preferably 20 mm or less.

[0021] The fixing jig of the present invention has a rod-shaped stake portion that is connected to the head portion. The stake serves to fix the fixture to the installation surface through a through-hole provided in the solar power generation system. The stake may be cylindrical or prismatic as long as it is rod-shaped, but a cylindrical shape is preferred because it has a larger surface area and is less likely to come off the installation surface. The stake may also have a pointed lower end to make it easier to fix the fixture to the installation surface.

[0022] The length of the stakes is adjusted appropriately depending on the size of the solar power generation device to be fixed and the material of the installation surface so that the stakes do not come off the installation surface. Specifically, for example, when the solar power generation device is 1000 mm × 1000 mm in size and is fixed in the arrangement shown in Fig. 4(a), the length of the stakes is preferably 10 cm or more, more preferably 15 cm or more, and is preferably 150 cm or less, and more preferably 50 cm or less.

[0023] The fixing jig of the present invention has a holding portion having projections and depressions provided in the stake portion. The retaining portion serves to increase the pressure and friction applied from the installation surface to the fixing jig after the fixing jig of the present invention is fixed to the installation surface, making it difficult for the pile portion to come out. The retaining portion may be formed anywhere within the range of the pile portion, may be formed near the bottom end of the pile portion, may be formed near the middle of the pile portion, or may be formed at multiple locations on the pile portion.

[0024] It is preferable that the retaining portion has a portion whose horizontal cross-sectional area is larger than the horizontal cross-sectional area of ​​the portion of the pile portion where the retaining portion is not formed (hereinafter, the horizontal cross-sectional area will be simply referred to as the cross-sectional area). The holding portion has a portion larger than the cross-sectional area of ​​the pile portion, i.e., the holding portion is thicker than the pile portion, which increases the pressure and friction from the installation surface and makes the pile portion more difficult to come loose. Specifically, the maximum cross-sectional area of ​​the holding portion is preferably 1.1 times or more, more preferably 1.2 times or more, even more preferably 1.3 times or more, and particularly preferably 1.5 times or more, the maximum cross-sectional area of ​​the pile portion. There is no particular upper limit to the cross-sectional area of ​​the holding portion, but from the perspective of handleability, the maximum cross-sectional area is preferably 5 times or less, more preferably 4 times or less, and even more preferably 3 times or less, the maximum cross-sectional area of ​​the pile portion.

[0025] The shape of the holding part is not particularly limited as long as it can more firmly fix the stake to the installation surface, but it is preferable that it has a screw shape, a spiral shape, a shape with a thick tip (bottom), or a claw shape. By using a holding part with such a shape, the pressure and friction from the installation surface can be further increased, making it more difficult for the stake to come off. FIG. 5 shows schematic diagrams illustrating examples of the shape of the holding portion in the fixing jig of the present invention. FIG. 5(a) shows a screw-shaped holding portion, and the pile portion can be fixed to the installation surface by rotating a screw hole provided in the pile portion. FIGS. 5(b) to 5(d) show disk-shaped or polygonal plate-shaped holding portions provided at the bottom end of the pile portion, at multiple locations on the pile portion, and in the middle of the pile portion, respectively, and the bottom is thicker than the top when viewed as a whole. FIGS. 5(e) to 5(g) show hollow pile portions, and claw-shaped holding portions provided on the inner surface, outer surface, and both surfaces of the pile portion, respectively. Pile portions having holding portions such as those shown in FIGS. 5(b) to 5(g) are fixed to the installation surface by driving the pile portion with a hammer or the like.

[0026] In the fixing jig of the present invention, the head portion and the stake portion can be connected and separated by the screw portions provided on each of them. The fixing jigs used for conventional sheets and other materials have a head and a stake that are integrated, so the fixing jig is driven into the solar power generation system through a through-hole after installation. To increase the fixing force of the fixing jig, the contact area between the head and the solar power generation system must be increased. However, the through-hole drilled in the solar power generation system must be larger in diameter than the holding part, which necessitates a larger through-hole. Furthermore, since there is no part to press the head above the through-hole and it does not contribute to fixing, the area of ​​the head must be increased to increase the fixing force. However, increasing the area of ​​the head significantly interferes with the power generation section of the solar power generation system, as shown in Figures 1 and 2. Therefore, trying to avoid interference with the power generation section can result in a larger installation area. FIG. 3 shows a schematic diagram of a solar power generation system secured using the fixing jig of the present invention. In FIG. 3, the upper diagram is a cross-sectional view, and the lower diagram is a top view. As shown in FIG. 3, the fixing jig 1 of the present invention has a structure that allows for connection and disconnection using threads provided on the pile portion 3 and head portion 2. This allows for fastening by first driving the pile portion 3 into the installation surface 6, then installing the solar power generation system 5 so that the pile portion 3 passes through the through-hole, and then connecting the head portion 2. This fastening method allows for the diameter of the through-hole to be sized to match the diameter of the pile portion 3 rather than the diameter of the thickest holding portion 4, thereby making the through-hole smaller. A smaller through-hole size increases the contact area between the head portion 2 and the solar power generation system 5, thereby increasing the fixing force. Furthermore, the area of ​​the head portion 2 required for fastening can be reduced compared to conventional fixing jigs, thereby reducing the area of ​​interference with the power generation unit 51. Furthermore, because the thickness of the holding portion can be set independently of the size of the through-hole, thickening the holding portion can prevent the pile portion from slipping out of the installation surface, even on soft ground. In addition, it can be easily attached even to heads with a large area (high fixing force) that do not interfere with the power generation part of the solar power generation device, in other words, heads with a shape that is difficult to handle. Furthermore, the shape of the head can be selected according to the installation form, while the same stake part can be used, which reduces costs.

[0027] The pile portion has a driving portion that is not provided with threads above the threaded portion. In cases where the head and pile sections are provided with threads to enable connection and separation, installation defects can occur, such as when the pile section is driven into the installation surface, the threads being damaged and unable to connect to the head, or when the head is connected with an unintended tilt. In the fixing jig of the present invention, by providing a driving section with no threads above the threaded section of the pile section and hitting the driving section with a hammer or the like, damage to the threads can be reduced, and as a result, installation defects can be reduced.

[0028] The driving portion has different possible arrangements and shapes depending on whether the threaded portion of the pile portion is male or female. Here, FIG. 6 shows a schematic diagram illustrating an example of a driving portion in the fixing jig of the present invention. As shown in FIG. 6(a), the driving portion 32 can be arranged, for example, such that when the threaded portion 31 of the pile portion 3 is male or female, the driving portion 32 is formed contiguous with the threaded portion 31. Protecting the threaded portion with the driving portion in this manner makes the threaded portion less likely to be damaged during driving of the pile portion. Furthermore, particularly when the threaded portion of the pile portion is male and the driving portion is formed contiguous with the threaded portion, it is preferable that the horizontal cross-sectional area of ​​the upper end of the driving portion be smaller than the horizontal cross-sectional area of ​​the lower end. By making the cross-sectional area of ​​the upper end of the driving portion smaller than the cross-sectional area of ​​the lower end, even if the driving portion deforms and expands horizontally during driving of the pile portion, it is less likely to exceed the diameter of the threaded portion, thereby further reducing installation defects.

[0029] When the threaded portion of the pile is a female thread, it is also possible to arrange the driving portion 32 around the threaded portion 31 of the pile 3, as shown in Figure 6(b). By arranging the driving portion on the threaded portion, a hammer or the like will not hit the threaded portion, making it less likely to damage the threaded portion when driving the pile. In addition, a driving portion such as that shown in Figure 6(b) makes it easier to increase the area on which a hammer or the like hits, making driving easier and dispersing the driving force, making the driving portion less likely to deform, thereby further reducing construction defects. The driving portion provided around the threaded portion may be donut-shaped, surrounding the entire periphery of the threaded portion, or may have a shape with a portion of the donut-shaped driving portion missing.

[0030] The thickness (vertical length) of the driving portion is not particularly limited as long as it can prevent damage to the threaded portion, but from the viewpoint of further preventing damage to the threaded portion while making it easier to connect to the head, it is preferably 5 mm or more, more preferably 10 mm or more, and preferably 30 mm or less, and more preferably 20 mm or less.

[0031] The material of the fixing jig of the present invention is not particularly limited as long as it has the strength to sufficiently fix the photovoltaic power generation device, and examples thereof include metals such as SUS, aluminum, and cast iron, resins, and composite reinforced materials such as FRP.

[0032] The method of using the fixing jig of the present invention is to first form a through-hole in the non-power-generating part of the photovoltaic power generation device, then drive the stake part of the fixing jig into the installation surface, and then install the photovoltaic sheet so that the stake part overlaps the through-hole.Then, the head part is connected to the stake part to fix the photovoltaic power generation device to the installation surface. The present invention also provides a method for installing a solar power generation device, characterized by comprising the steps of: providing a through hole in the peripheral portion of such a solar power generation device; fixing the pile portion and holding portion of the fixing jig of the present invention to an installation surface; installing the solar power generation device so that the through hole passes through the pile portion fixed to the installation surface; and attaching the head of the fixing jig to the pile portion to fix the solar power generation device to the installation surface.

[0033] The method for installing a solar power generation device according to the present invention first involves a step of providing through holes in the peripheral edge portion of the solar power generation device. Since the peripheral portion of the solar power generation device is a non-power generation portion, providing through holes in the peripheral portion can reduce the impact on the power generation portion. Methods for providing through holes in the solar power generation device include, for example, drilling and punching. The through holes may be provided in advance in the solar power generation device. Furthermore, from the viewpoint of waterproofing and durability, the through holes may be reinforced with metal, resin, or the like. By providing such reinforcement, it is possible to prevent moisture from penetrating the inside of the solar power generation device through the through holes and to prevent damage such as cracking of the through holes due to stress during fixation.

[0034] The size of the through hole is adjusted appropriately depending on the thickness of the pile portion and the holding portion, but from the standpoint of ease of construction and making the area covered by the head as large as possible, it is preferably 1.0 times or more, more preferably 1.1 times or more, of the maximum diameter of the pile portion and the holding portion, preferably 10 times or less, and more preferably 5 times or less.

[0035] The method for installing a photovoltaic power generation device of the present invention then carries out a step of fixing the pile portion and the holding portion of the fixing jig of the present invention to the installation surface. In the above process, the pile is fixed to the installation surface by driving a hammer or the like into the top of the pile, but the fixing jig of the present invention has a driving portion for hitting the hammer or the like, so the threads are less likely to be damaged during this process. As a result, poor installation can be prevented during the process of attaching the head to the pile, which will be described later.

[0036] The installation surface is a surface having a thickness that allows the pile portion to be driven into it, such as the ground, a concrete surface, etc. In particular, with the fixing jig of the present invention, even if the holding portion is made thicker, the size of the through hole does not change and the fixing force does not decrease, so the solar power generation device can be firmly fixed even in places where the ground is soft, such as so-called soft ground, such as farm fields, agricultural land, wetlands, and sandy areas, or in places where burying the device is difficult, such as gravel or rocky areas.

[0037] The method for installing a solar power generation device of the present invention then carries out a step of installing the solar power generation device so that the through-hole passes through a stake fixed to the installation surface. The fixing jig of the present invention allows the pile portion and head portion to be connected and separated, so the solar power generation system can be installed after the pile portion is driven in. Therefore, the diameter of the through hole only needs to be large enough to allow the pile portion, which is thinner than the holding portion, to pass through, so the diameter of the through hole can be smaller than when fixing with a conventional fixing jig. As a result, the area pressed by the head portion is larger, allowing for increased fixing force. Furthermore, since the area of ​​the head portion can be reduced for the same fixing force, interference with the power generation portion of the solar power generation system can be reduced.

[0038] The method for installing a photovoltaic power generation system of the present invention then carries out a step of attaching the head of the fixing jig to the pile portion to fix the photovoltaic power generation system to an installation surface. The photovoltaic power generation system is fixed by screwing the threaded portion of the head and the threaded portion of the pile, and sandwiching the photovoltaic power generation system between the installation surface and the head. The fixing jig of the present invention is less likely to damage the threads during the process of fixing the pile and holding part to the installation surface, so installation defects in this process are reduced. Note that after attaching the head, the fixing jig may be driven in to make fine adjustments to the fixation.

[0039] By using the fixing jig of the present invention and the installation method for a solar power generation device of the present invention, the solar power generation device can be fixed more firmly while minimizing the impact on power generation performance. An installation structure for a solar power generation device, characterized in that the fixing jig of the present invention is fixed to an installation surface through a through hole provided in a peripheral portion of the solar power generation device, and the solar power generation device is fixed to the installation surface by a head of the fixing jig; and The present invention also includes a solar power generation device installation kit comprising a solar power generation device and a plurality of fixing jigs according to the present invention.

[0040] The number of fixing jigs of the present invention in the solar power generation device installation kit of the present invention is not particularly limited as long as it is two or more, and is selected appropriately depending on the area of ​​the solar power generation device to be installed, the number of devices to be installed, the installation form, etc. [Explanation of symbols]

[0041] 1 Fixture 2 heads 3 Pile part 31 Threaded section 32 Injection area 4 Holding part 5. Solar power generation equipment 51 Power Generation Department 52 Non-power generation section 6 Installation surface

Claims

1. A fixing jig used to fix a solar power generation device, a head portion that holds the solar power generation device in place from above; A rod-shaped stake portion connected to the head portion; A holding portion having an unevenness provided in the stake portion, The head portion and the pile portion can be connected and separated by screw portions provided on each portion, A fixing jig characterized in that the pile portion has a driving portion above the screw portion where no threads are provided.

2. The threaded portion of the pile portion is a male thread or a female thread, 2. The fixture according to claim 1, wherein the driving portion is formed continuous with the threaded portion.

3. The fixing jig according to claim 1, wherein the threaded portion of the pile portion is a female thread, and the driving portion is provided around the threaded portion of the pile portion.

4. 2. The fixture according to claim 1, wherein the holding portion has a portion whose horizontal cross-sectional area is larger than the horizontal cross-sectional area of ​​a portion of the pile portion where the holding portion is not formed.

5. The fixing jig according to claim 1 or 2, wherein the head portion has a shape including a band shape when viewed from above.

6. 3. The fixing jig according to claim 1, wherein the size of the head is 1.1 times or more the diameter of a through hole of the photovoltaic power generation device provided to allow the pile portion to pass through.

7. 3. The fixture according to claim 1, wherein the size of the head is 1.1 times or more the diameter of the stake portion.

8. 3. An installation structure for a solar power generation device, characterized in that the fixing jig according to claim 1 or 2 is fixed to an installation surface through a through hole provided in the peripheral portion of the solar power generation device, and the solar power generation device is fixed to the installation surface by a head of the fixing jig.

9. A photovoltaic power generation device installation kit comprising a photovoltaic power generation device and a plurality of fixing jigs according to claim 1 or 2.

10. 3. A method for installing a solar power generation device, comprising the steps of: providing a through hole in a peripheral portion of the solar power generation device; fixing a pile portion and a holding portion of the fixing jig according to claim 1 or 2 to an installation surface; installing the solar power generation device so that the through hole passes through the pile portion fixed to the installation surface; and attaching a head of the fixing jig to the pile portion to fix the solar power generation device to the installation surface.

Images