JP2015145574A - Fixture and solar cell system including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture capable of reducing an installation area while improving workability and reducing manufacturing cost.SOLUTION: A fixture 6 is fixing means for fixing a first solar cell module 2a and a second solar cell module 2b which are disposed side by side along an inclined direction of a roof 1, to a fixing plane 401. The fixture 6 includes: a fixing part 600 formed with an open hole 603 for allowing a shank 803 of a fastening screw 8 to penetrate; a first engaging part 601 that engages with an end part of the first solar cell module 2a; and a second engaging part 602 that engages with an end part of the second solar cell module 2b. A shaft line of the fastening screw 8 does not overlap with the first engaging part 601 and the second engaging part 602. A head part 802 of the fastening screw 8 is positioned within a projection area on a fixing plane 401 where the first engaging part 601 and the second engaging part 602 are projected on the projection area in a vertical direction.

Description

  The present invention relates to a fixture and a solar cell system including the fixture.

  For example, a fixture is used when fixing an object to be fixed such as a solar cell module on a fixed surface. For example, in Patent Document 1, a fixing bracket is fixed to a fixing surface of a gantry with a fastening screw. Engagement portions that are engaged with the end portions of the solar cell module from above are formed on both sides of the fixing metal fitting with the fastening screws. The solar cell module is fixed on the gantry by sandwiching the end portions of the solar cell module provided on both sides of the fixing bracket between the engaging portion and the gantry. When using this fixing bracket, the solar cell modules on both sides are fixed simultaneously by disposing the solar cell modules on both sides of the fixing bracket and then fixing the fixing bracket to the mount.

  Moreover, in patent document 2, the solar cell module is fixed by inserting the solar cell module between the fixtures fixed in advance on the pedestal with fastening screws. In addition, the head of the fastening screw is housed in a pedestal formed on the fixing bracket so that the fastening screw for fixing the fixing bracket and the solar cell module can be arranged in a plane, and the solar cell module is placed on the pedestal. Installed.

JP 2000-220268 A JP 2013-217084 A

  However, in the fixing bracket disclosed in Patent Document 1, an interval greater than the width obtained by integrating the width of the head of the fastening screw and the thickness of the tool for fastening the fastening screw is required between the solar cell modules. It was. Therefore, the installation area required when installing a plurality of solar cell modules tends to increase. Moreover, since it is a fixing operation | work after arranging a solar cell module on both sides of a fixing metal fitting, the solar cell module got in the way and workability | operativity might fall.

  In addition, in the fixing bracket disclosed in Patent Document 2, since the solar cell module and the fastening screw are arranged in a planar manner, the installation area can be reduced, but the material for forming the pedestal is extra. This is necessary and may increase manufacturing costs. In addition, since the solar cell module is fixed apart from the pedestal by the height of the pedestal, the aesthetic appearance may be impaired, or the fixing may become unstable.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a fixing metal fitting capable of reducing an installation area, improving workability, and suppressing manufacturing costs, and a solar cell system including the same. And

  In order to solve the above-described problems and achieve the object, the present invention fixes the first solar cell module and the second solar cell module arranged side by side along the first direction to the fixed surface. A fixing bracket, which is located between the first solar cell module and the second solar cell module, has a through hole that penetrates the shaft portion of the fastening screw, and allows the shaft portion to pass through the through hole. A fixing portion that is fixed to the fixing surface by a fastening screw, and a first engagement that extends from the fixing portion toward the first solar cell module and sandwiches the end portion of the first solar cell module between the fixing surface And a second engagement portion extending from the fixing portion to the second solar cell module side and sandwiching the end portion of the second solar cell module between the fixing surface and being penetrated by the through hole. The fastening screw has an axis that overlaps with the first engaging portion and the second engaging portion. The head of the fastening screw that is tilted with respect to the vertical direction of the fixed surface and penetrated through the through hole is a projection obtained by projecting the first engaging portion and the second engaging portion in the vertical direction of the fixed surface. It fits inside the part.

  According to the present invention, it is possible to obtain a fixture that can reduce the installation area, improve the workability, and reduce the manufacturing cost.

FIG. 1 is a perspective view of a solar cell system according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along the line II shown in FIG. FIG. 3 is a cross-sectional view of the solar cell module. FIG. 4 is a cross-sectional view of the fixture. FIG. 5 is a diagram illustrating one process of fixing the solar cell module. FIG. 6 is a diagram illustrating one process of fixing the solar cell module. FIG. 7 is a diagram showing one process of fixing the solar cell module. FIG. 8 is a diagram showing one process of fixing the solar cell module. FIG. 9 is a diagram illustrating one process of fixing the solar cell module. FIG. 10 is a diagram illustrating one process of fixing the solar cell module. FIG. 11 is a diagram illustrating one process of fixing the solar cell module. FIG. 12 is a plan view illustrating a fixing example of the solar cell module using the fixing bracket according to the first embodiment. FIG. 13 is a cross-sectional view showing another example of fixing the solar cell module using the fixture according to the first embodiment. FIG. 14: is sectional drawing of the solar cell system concerning Embodiment 2 of this invention. FIG. 15 is a diagram showing one process of fixing the solar cell module. FIG. 16 is a diagram illustrating one process of fixing the solar cell module. FIG. 17 is a diagram illustrating one process of fixing a solar cell module. FIG. 18 is a diagram illustrating an interval between solar cell modules in the solar cell system according to the second embodiment. FIG. 19 is a cross-sectional view illustrating a state in which the solar cell modules according to the second embodiment are stacked.

  Below, the fixture and solar cell system concerning an embodiment of the invention are explained in detail based on a drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a solar cell system according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along the line II shown in FIG. As shown in FIGS. 1 and 2, the solar cell system 900 includes a solar cell module (fixed object) 2 provided on a roof 1 of a building, a gantry 4 fixed on the roof 1, and a gantry 4. And a fixing bracket 6 that is fixed and fixes the solar cell module 2 on the roof 1. In the first embodiment, the roof 1 is an inclined roof.

  In the drawing, the direction indicated by arrow X is the eaves side, and the direction indicated by arrow Y is the ridge side. The solar cell module 2 arranged on the eaves side is also referred to as a first solar cell module (fixed object) 2a, and the solar cell module 2 provided on the ridge side is referred to as a second solar cell module (fixed object). Also referred to as 2b. That is, the first solar cell module 2a and the second solar cell module 2b are installed side by side along the inclination direction (first direction) of the roof 1. In the drawing, only two solar cell modules 2 arranged on the ridge side and the eaves side are shown, but in practice, a large number of solar cell modules are often arranged side by side.

  FIG. 3 is a cross-sectional view of the solar cell module 2. The solar cell module 2 includes a solar cell panel 20 and a holding frame 200. The solar cell panel 20 has a plate shape that is rectangular in plan view. The solar cell panel 20 generates electric power when light enters the light receiving surface 20a.

  The holding frame 200 surrounds the solar cell panel 20 and holds the solar cell panel 20. The holding frame 200 is a frame member made of metal, for example, aluminum. The holding frame 200 includes a side surface portion 201, a light receiving surface side protruding portion 202, a back surface side protruding portion 203, a bottom portion 204, and a flange portion 205.

  The side surface portion 201 extends in parallel with the side surface of the solar cell panel 20. The light receiving surface side protrusion 202 and the back surface side protrusion 203 protrude from the side surface portion 201 to the solar cell panel 20 side, and sandwich the solar cell panel 20 from the light receiving surface 20a side and the back surface 20b side. The bottom portion 204 is provided on the roof 1 side with respect to the rear surface side protruding portion 203 and protrudes from the side surface portion 201 to the solar cell panel 20 side. The flange portion 205 is provided closer to the solar cell panel 20 than the bottom portion 204, and protrudes from the side surface portion 201 to the side opposite to the solar cell panel 20.

  The holding frame 200 configured as described above is provided so as to surround the periphery of the solar cell panel 20. In the following description, among the holding frames 200 surrounding the solar cell panel 20, the holding frame 200 provided on the eave side is also referred to as a lower holding frame 200a, and the holding frame 200 provided on the ridge side is referred to as the upper holding frame. Also referred to as 200b.

  FIG. 4 is a cross-sectional view of the fixture 6. The fixing bracket 6 is fixed on the fixing surface 401 of the gantry 4 fixed to the roof 1. In the following description, the direction perpendicular to the fixed surface 401 and away from the roof 1 is defined as the upper direction, and the opposite direction is defined as the lower direction.

  The fixture 6 includes a fixing part 600, a first engaging part 601, a second engaging part 602, and a contact part 604. The fixing part 600 is located between the first solar cell module 2a and the second solar cell module 2b. A through hole 603 through which the shaft portion 803 of the fastening screw 8 passes is formed in the fixing portion 600. The fixing bracket 6 is fixed to the fixing surface 401 with the fastening screw 8 having the shaft portion 803 passing through the through hole 603.

  The first engaging portion 601 extends from the fixing portion 600 toward the eave side, and sandwiches the end portion of the solar cell module 2 (the flange portion 205 of the upper holding frame 200b) between the fixing surface 401 and the first engaging portion 601. The second engagement portion 602 extends from the fixed portion 600 toward the ridge, and sandwiches the end portion of the solar cell module 2 (the flange portion 205 of the lower holding frame 200a) between the second engaging portion 602 and the fixed surface 401.

  The contact portion 604 protrudes toward the ridge side from the lower end of the fixing portion 600, enters between the lower holding frame 200a of the second solar cell module 2b and the fixing surface 401 of the gantry 4, and holds the lower side. The frame 200a is supported from below. The through hole forming surface 605 in which the through hole 603 is formed is inclined to the second engaging portion 602 side from the fixed surface 401 so that the second engaging portion 602 side is lower than the first engaging portion 601 side. It is formed. The angle formed by the through-hole forming surface 605 and the fixing surface 401 is an angle at which the axis 801 of the fastening screw 8 that has passed through the through-hole 603 does not overlap the first engagement portion 801 and the second engagement portion 602.

  Therefore, the angle formed by the through-hole forming surface 605 and the fixing surface 401 is an angle determined by the protruding amount of the second engaging portion 602 and the distance between the second engaging portion 602 and the fixing surface 401. In the present embodiment, the angle θ1 formed by the through hole forming surface 605 and the fixed surface 401 is 45 degrees (the angle θ2 formed by the axis 801 and the vertical direction of the fixed surface 401 is also 45 degrees).

  The through-hole 603 is formed inside a projection portion obtained by projecting the first engagement portion 601 and the second engagement portion 602 downward. As a result, the head 802 of the fastening screw 8 penetrated through the through-hole 603 is accommodated inside the projected portion obtained by projecting the first engagement portion 601 and the second engagement portion 602 downward.

  The fixed portion 600 is formed with a first contact surface 600a that contacts the solar cell module 2 (first solar cell module 2a) disposed on the eaves side from the side surface. The fixed portion 600 is formed with a second contact surface 600b that contacts the solar cell module 2 (second solar cell module 2b) disposed on the ridge side from the side surface. More specifically, one surface of the protrusion protruding upward from the boundary portion between the fixed portion 600 and the contact portion 604 becomes the second contact surface 600b.

  Next, a procedure for fixing the above-described solar cell module 2 on the roof 1 using the fixing bracket 6 will be described. FIGS. 5 to 11 are diagrams for explaining the fixing procedure of the solar cell module 2. On the roof 1, a gantry 4 on which a fixing surface 401 is formed is fixed using a wood screw 5 (see also FIG. 1).

  First, the fixture 6 is fixed at a position closer to the eave side than the first solar cell module 2a provided on the eave side (see FIG. 5). Specifically, the nut 7 is inserted into the hollow portion 402 of the gantry 4, the shaft portion 803 of the fastening screw 8 is inserted into the through hole 603 formed in the fixing bracket 6, and the female screw 701 formed in the nut 7 is inserted. The shaft portion 803 of the fastening screw 8 is screwed.

  The nut 7 has an abutting surface 702 that abuts the gantry 4 in parallel with the fixed surface 401 of the gantry 4. In addition, the formation direction of the female screw 701 on the nut 7 is formed to be inclined with respect to the vertical direction of the contact surface 702. In the state where the nut 7 is screwed to the fastening screw 8, the forming direction of the female screw 701 and the vertical direction of the through-hole forming surface 605 coincide. That is, the inclination of the axis 801 of the fastening screw 8 described above is also realized by the formation direction of the female screw 701.

  Next, after letting the flange portion 205 formed on the lower holding frame 200a of the first solar cell module 2a under the second engaging portion 602 of the fixing bracket 6 (see FIG. 6), The bottom portion 204 of the lower holding frame 200a is placed on the contact portion 604 of the fixing bracket 6 so that the solar cell panel 20 is parallel to the fixing surface 401 (see FIG. 7).

  Accordingly, the lower holding frame 200a (the end portion of the first solar cell module 2a) is sandwiched between the fixed surface 401 (the contact portion 604) and the second engagement portion 602. Specifically, the second engagement portion 602 presses the flange portion 205 downward. Then, the gantry 4 and the contact portion 604 press the bottom portion 204 upward. In addition, the movement to the eaves side of the 1st solar cell module 2a is controlled because the side surface of the side part 201 of the lower side holding frame 200a contacts the 2nd contact surface 600b of the fixture 6. FIG.

  Next, the fixing bracket 6 is provided by covering the flange portion 205 of the upper holding frame 200b of the first solar cell module 2a with the first engagement portion 601 from above (see FIG. 8). Then, the fixture 6 is fixed to the fixing surface 401 of the gantry 4 with the fastening screw 8. Accordingly, the upper holding frame 200b (the end portion of the first solar cell module 2a) is sandwiched between the fixed surface 401 and the first engagement portion 601. Here, the movement of the first solar cell module 2a to the ridge side is restricted by the side surface of the side surface portion 201 of the upper holding frame 200b coming into contact with the first contact surface 600a of the fixture 6.

  In this way, the first solar cell module 2a is moved in the vertical direction by the holding frame 200 being sandwiched by the first engaging portion 601, the second engaging portion 602, and the fixing surface 401 (contact portion 604). The first contact surface 600a and the second contact surface 600b restrict the movement of the solar cell module 2a toward the eaves side and the ridge side, and the first solar cell module 2a is fixed on the roof 1. The Before fixing the first solar cell module 2a, the nut 7 is inserted into the base 4 in advance and the fastening screw 8 is lightly tightened, so that the fixing bracket 6 for clamping the upper holding frame 200b is temporarily assembled and fixed. It may be left. In this case, when the upper holding frame 200b is clamped by the fixing bracket 6, the fastening screw 8 is finally tightened after the flange portion 205 is covered with the first engagement portion 601.

  Next, the second engagement of the fixture 6 holding the flange portion 205 formed on the lower holding frame 200a of the second solar cell module 2b with the upper holding frame 200b of the first solar cell module 2a. The bottom portion 204 of the lower holding frame 200a is placed on the contact portion 604 so that the solar cell panel 20 is parallel to the fixing surface 401 after being submerged under the portion 602 (see FIG. 9). (See FIG. 10).

  Accordingly, the lower holding frame 200a (the end portion of the second solar cell module 2b) is sandwiched between the fixed surface 401 and the second engagement portion 602. Moreover, the movement of the second solar cell module 2b to the eaves side is restricted by the side surface portion 201 and the side surface of the lower holding frame 200a coming into contact with the second contact surface 600b of the fixture 6.

  Then, the first solar cell module is fixed by fixing the upper holding frame 200b of the second solar cell module 2b with the fixing bracket 6 in the same manner as the upper holding frame 200b of the first solar cell module 2a is fixed. 2a and the 2nd solar cell module 2b are arranged along the inclination direction, and are fixed on the roof 1 (refer FIG. 11).

  According to the solar cell system 900 described above, as shown in FIGS. 2, 5, etc., the head 802 of the fastening screw 8 passed through the through-hole 603 has the first engaging portion 601 and the second engaging portion 602. Since the axis 801 of the fastening screw 8 is not overlapped with the second engaging portion 602 but is displaced to the ridge side even though it is within the projected portion projected downward, the second engaging portion The screw tightening operation can be performed by engaging the tool with the head 802 while avoiding 602. For example, as shown in FIGS. 2 and 5, a socket wrench 10 attached to the electric screwdriver 9 can be engaged with a head 802 formed in a hexagonal shape to perform screw tightening work. At that time, the socket wrench 10 does not interfere with the second engaging portion 602.

  As described above, the head 802 of the fastening screw 8 penetrated through the through hole 603 is accommodated inside the projected portion in which the first engaging portion 601 and the second engaging portion 602 are projected downward, so that the solar cell is obtained. Since it is not necessary to provide the width of the head 802 of the fastening screw 8 between the modules 2, the planar installation area of the solar cell module 2 can be reduced.

  For example, as shown in FIG. 11, in the first solar cell module 2a, the length L from the front end of the flange portion 205 of the lower holding frame 200a to the front end of the flange portion 205 of the upper holding frame 200b is set to 858 mm. Assuming that the outer diameter D of the shaft portion 803 of the screw 8 is 8 mm, the gap W between the first solar cell module 2a and the second solar cell module 2b adds a slight clearance to the wall thickness 2 mm of the fixture 6. Only 3mm is enough.

  The mounting pitch of the solar cell modules 2 along the inclination direction of the roof 1 is 858 mm + 3 mm = 861 mm. The mounting pitch is 858 mm which is a length L from the front end of the flange portion 205 of the lower holding frame 200a to the front end of the flange portion 205 of the upper holding frame 200b, and the outer diameter dimension D of the shaft portion 803 of the fastening screw 8. It is 5mm shorter than 866mm which added 8mm.

  Further, when the head portion 802 of the fastening screw 8 that has passed through the through hole 603 protrudes beyond the projected portion in which the first engagement portion 601 and the second engagement portion 602 are projected downward, the solar cell In order to let the head 802 of the fastening screw 8 enter under the module 2, a contact portion 604 is formed at a position higher than the head 802 of the fastening screw 8, or a pedestal for housing the head 802 is formed. There is a need.

  On the other hand, in the present embodiment, the head portion 802 of the fastening screw 8 that is penetrated through the through hole 603 is accommodated inside the projection portion in which the first engagement portion 601 and the second engagement portion 602 are projected downward. Therefore, it is not necessary to provide the contact portion 604 of the fixing bracket 6 above the head 802 of the fastening screw 8. Therefore, the distance from the roof 1 to the solar cell module 2 can be suppressed, and the aesthetics can be improved and the fixation can be stabilized. In the present embodiment, the height of the head 802 is 4 mm, whereas the thickness of the contact portion 604 is 2 mm. Moreover, since the material used can be suppressed rather than forming the pedestal, the manufacturing cost can be suppressed. In addition, workability is improved.

  Further, as described in the fixing procedure, when the fixing bracket 6 is fixed to the gantry 4, the solar cell module 2 is not fixed to both the eave side and the ridge side at the same time, but the first provided on the eave side. Only the solar cell module 2a can be fixed. Therefore, if the worker who performs fixing stands on the ridge side of the fixing metal fitting 6, it is not necessary to climb on the solar cell module 2, so that damage to the solar cell module 2 can be suppressed.

  Further, even if the head portion 802 of the fastening screw 8 penetrated through the through hole 603 is accommodated inside the projected portion in which the first engagement portion 601 and the second engagement portion 602 are projected downward, the tool on the head portion 802 Therefore, it is not necessary to cut away the second engaging portion 602 above the through hole 603 so that the tool can be easily engaged with the head 802. This can be said in other words that the end surfaces on the near side and the back side of the fixture 6 are formed by one plane on the paper surface of FIG. Therefore, in the manufacturing process of the fixing bracket 6, it is possible to reduce the number of steps such as press working for cutting off a part of the second engaging portion 602 in addition to the process of cutting the one formed by extrusion molding. Thereby, suppression of manufacturing cost can be aimed at.

  In the present embodiment, in order to shift the axis 801 of the fastening screw 8 to the ridge without overlapping the second engaging portion 602, the through hole forming surface 605 is tilted or the forming direction of the female screw 701 is tilted. ing. Here, the method of shifting the axis 801 of the fastening screw 8 to the ridge without overlapping the second engaging portion 602 is not limited to these. For example, the forming direction of the through hole 603 may be inclined, and the insertion direction of the fastening screw 8 itself may be inclined. That is, even when the through hole forming surface 605 and the female screw 701 are not inclined in the forming direction, the axis line 801 of the fastening screw 8 fixed to the through hole 603 through the shaft portion 803 is used as the second engaging portion 602. What is necessary is just the structure shifted to the ridge side, without overlapping.

  FIG. 12 is a plan view showing an example of fixing the solar cell module using the fixture 6 according to the first embodiment. The fixture 6 is manufactured by an extrusion mold and is formed by cutting to an arbitrary length. A plurality of solar cell modules arranged in a direction (also referred to as a lateral direction (second direction) in the following description) parallel to the fixed surface 401 (see also FIG. 2) and perpendicular to the inclination direction of the roof 1 can be sandwiched simultaneously. By cutting the fixing bracket 6 to such a length, the number of the gantry 4 can be reduced. In particular, when solar cell modules having different sizes are provided, the number of the gantry 4 can be reduced.

  In the example shown in FIG. 12, a trapezoidal shape having an area of about half beside the first solar cell module 2 a and the second solar cell module 2 b that are rectangular and arranged along the inclination direction of the roof 1. Trapezoidal solar cell modules (third solar cell modules) 11, 12 and square-shaped square solar cell modules (third solar cell modules) 13 whose area is about half are arranged.

  Since the wind pressure load or snow load applied to the solar cell module increases in proportion to the area of the solar cell module, if the area of the solar cell module is small, the fixing force against the wind pressure load and snow load can be reduced. .

  For example, even if the fixing force against the wind pressure load and snow load applied to the first and second solar cell modules 2 a and 2 b is combined with the fixing of other solar cell modules provided in the inclination direction of the roof 1, 4. When satisfied with the individual bases 4 and the fixing brackets 6, the number of the bases 4 and the fixing brackets 6 necessary for fixing the solar cell modules 11 to 13 is less than four. However, at least three fixed points are required to maintain a planar rigid body in a posture in space.

  Therefore, a fixing metal 14 is prepared which is cut by a longer length than the fixing metal 6 manufactured by forming a cross-sectional shape with an extrusion die. Then, by placing the gantry 4 and the fixing bracket 14 at a position where both the trapezoidal solar cell module 12 and the second solar cell module 2b are engaged, the number of the gantry 4 holding the trapezoidal solar cell module 12 is three or less. Can be suppressed.

  Similarly, a length that engages both the square solar cell module 13 disposed beside the second solar cell module 2b and the trapezoidal solar cell module 11 disposed beside the first solar cell module 2a. The fixing bracket 15 cut and processed in step 1 is fixed to one gantry 4 provided at the center thereof, and the fixing bracket 14 includes a square solar cell module 13 and a flange of the upper holding frame 200b of the second solar cell module 2b. The part 205 (see also FIG. 2 and the like) is engaged with the first engaging part 601, and the first solar cell module 2 a and the lower holding frame of the trapezoidal solar cell module 11 are connected to the second engaging part of the fixture 6. It is engaged with 602 and sandwiches four solar cell modules and is fixed to one frame 4 to resist wind pressure load and snow load applied to each solar cell module.

  The trapezoidal solar cell modules 11 and 12 are often used when the roof shape is a dormitory. However, the trapezoidal solar cell modules 11 and 12 are not used when the solar cell module is provided on the gable roof surface. Further, the square solar cell module 13 is used when a space is left on the roof surface even if a plurality of solar cell modules having the same area as the first solar cell module 2a are provided in the gable roof shape. Therefore, even if an extrusion die for manufacturing the fixing brackets 14 and 15 having a lateral length different from that of the fixing bracket 6 is manufactured exclusively, the shipment quantity is small compared to the fixing bracket 6 and the unit price of the parts. The mold allocation cost added to is increased.

  If the cross-sectional shapes of the fixing bracket 6 and the fixing brackets 14 and 15 having different lengths are the same, all the fixing brackets can be manufactured with the same extrusion mold, and the contact portion 604 avoids interference with the head 802. Therefore, even if the fixing brackets 14 and 15 are extruded with the same cross-sectional shape as the fixing bracket 6, it is possible to suppress an excessive material in terms of strength. As described above, in the present embodiment, the cross-sectional shape of the fixture is the same.

  FIG. 13 is a cross-sectional view showing another example of fixing the solar cell module using the fixture according to the first embodiment. In this fixed example, the case where the solar cell module 2 is installed on a mount made of a frame structure having an inclination on the south upper surface of the float placed on the ground, on a flat roof, or on a lake is shown.

  The gantry 410 is a gantry in which a pile foundation (not shown) is planted on a leveled ground, and a slope of a frame-like structure is assembled and fixed on the pile foundation with steel materials having an L-shaped cross section. is there. The fixed surface 411 of the gantry 410 is mainly directed in the south direction. In addition, the solar cell module 2 is installed at a relatively high position from the ground in order to prevent the sunlight from being blocked by the growth of weeds and snow on the ground and not reaching the light receiving surface of the solar cell module 2. Therefore, unlike the case where the solar cell module 2 is installed on the roof surface, an assembly operator can enter the back side of the fixed surface 411.

  Therefore, in this fixing example, the fixing bracket 6 is used in the direction opposite to the example shown in FIGS. That is, the flange portion 205 of the upper holding frame 200b of the first solar cell module 2a is engaged with the second engaging portion 602, and the flange portion 205 of the lower holding frame 200a of the second solar cell module 2b is set to the first. Engage with the engaging portion 601.

  The fastening screw 8 is inserted into the through-hole 603 such that the axis 801 and the vertical direction of the fixed surface 411 form an angle θ3. In this fixed example, θ3 is 45 degrees in this embodiment. At this time, since the axis 801 of the fastening screw 8 does not overlap the second engaging portion 602, the head 802 does not interfere with the second engaging portion 602 when the fastening screw 8 is inserted into the through hole 603. Easy assembly work.

  A hole 412 is formed in a part of the fixed surface 411. The nut receiving fitting 71 in which the hole portion 72 is formed from the back side of the fixing surface 411 is inserted at an arbitrary angle into the shaft portion 803 of the fastening screw 8 that has passed through the through hole 603 and the hole portion 412. An abutting surface 73 perpendicular to the axis 801 of the fastening screw 8 is formed on the back surface of the nut catch 71, and the nut 74 is screwed onto the fastening screw 8 until it abuts on the abutting surface 73, so that the first sun The battery module 2a and the second solar cell module 2b are fixed to the mount 410. As described above, even when the nut 74 having a general shape is used, the axis 801 of the fastening screw 8 is inclined with respect to the vertical direction of the fixing surface 411 by inserting the nut support 71 as a spacer. Is possible. In addition, since the fixture 6 is used in the reverse direction, the second solar cell module 2b comes first in the fixing order of the solar cell modules 2.

Embodiment 2. FIG.
FIG. 14: is sectional drawing of the solar cell system concerning Embodiment 2 of this invention. FIGS. 15-17 is a figure which shows 1 process of the fixing operation | work of a solar cell module. In addition, about the structure similar to the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the present embodiment, in the holding frame 200 provided in the solar cell module 2, the side part 201 is located on the inner side of the holding frame 200 at the part where the bottom part 204 protrudes than the part where the rear surface side protruding part 203 protrudes. To be formed. Further, the holding frame 200 is not formed with a flange portion protruding outward.

  In the fixture 610 according to the present embodiment, the first engaging portion 611 and the second engaging portion 612 are light receiving surface side protrusions 202 (end portions of the solar cell module 2) of the holding frame 200 of the solar cell module 2. Engage with. Accordingly, a part of the outer region of the solar cell panel 20 included in the solar cell module 2 also enters the inside of the projected portion obtained by projecting the first engagement portion 611 and the second engagement portion 612 downward.

  The procedure for fixing the solar cell module 2 is the same as that in the first embodiment. That is, after fixing the fixture 610 provided on the eaves side relative to the first solar cell module 2a to the mount 4, the first solar cell module 2a, the fixture 610 provided on the ridge side, the second solar The battery modules 2b are fixed in this order.

  In the present embodiment, the angle θ4 formed by the through hole forming surface 615 of the fixing bracket 610 and the fixing surface 401 of the gantry 4 is 22 degrees. The angle θ5 formed by the penetration direction of the female screw 701 formed on the nut 7 and the vertical direction of the fixed surface 401 is 90−22 = 68 degrees.

  Even though the head 802 of the fastening screw 8 passed through the through-hole 603 is within the projected portion of the first engaging portion 611 and the second engaging portion 612 projected downward, the fastening screw 8 8 axis 801 is shifted to the ridge without overlapping the second engagement portion 612, so that the tool is inserted into the hexagonal hole 804 formed in the head 802 while avoiding the second engagement portion 612. The screw tightening work can be performed by engaging. For example, the torque wrench 16 attached to the electric screwdriver 9 can be engaged with the hole 804 to perform the screw tightening operation. At that time, the torque wrench 16 does not interfere with the second engaging portion 612.

  Furthermore, since the tip of the torque wrench 16 has a hexagonal cross section, the tip and the neck are chamfered, so the torque wrench 16 is inserted into the hole 804 at a slightly different angle from the axis 801 of the fastening screw 8. Further, the rotation engagement with the hole 804 can be maintained, and the rotational force of the electric screwdriver 9 can be transmitted to the fastening screw 8. Therefore, even if the distance between the axis 801 and the second engagement portion 612 is closer than in the first embodiment, the workability of tightening the fastening screw 8 is not impaired.

  The fixing bracket 610 clamped to the gantry 4 by fastening the fastening screw 8 and the nut 7 includes the first engaging portion 611 and the second engaging portion 612, and the light receiving surface side protruding portion 202 of the holding frame 200 is fixed to the fixing surface 401. Press in the direction of. Then, the gantry 4 presses the bottom portion 204 upward.

  A taper-shaped gap portion 209 is formed in a part of the holding frame 200 formed of the same extrusion mold so that the bottom portion 204 side of the side surface portion 201 enters inside. As shown in FIG. 17, the head 802 of the fastening screw 8 is housed in a space generated by the gaps 209 facing each other.

  FIG. 18 is a diagram illustrating an interval between solar cell modules in the solar cell system according to the second embodiment. In the present embodiment, in the first solar cell module 2a, the length L from the outside of the lower holding frame 200a to the outside of the upper holding frame 200b is 834 mm, and the outer diameter dimension D of the shaft portion 803 of the fastening screw 8 is 8 mm.

  Here, the gap W between the first solar cell module 2a and the second solar cell module 2b is only 3 mm obtained by adding a slight clearance to the thickness 2 mm of the fixing metal 610, and the direction through the fixing metal 610 (roof 1 The mounting pitch of the solar cell module 2 in the inclination direction is 834 mm + 3 mm = 837 mm. Therefore, the mounting pitch is 842 mm, which is 834 mm which is the length L from the outside of the lower holding frame 200a to the outside of the upper holding frame 200b, plus 8 mm which is the outer diameter D of the shaft portion 803 of the fastening screw 8. Shorter by 5 mm.

  When the length of the solar cell module that can be installed on the wall of the building is 32 m, when inserting a fastening screw between the modules in the vertical direction between the modules by the conventional method, the thickness of the socket wrench and the fastening screw A thickness of a stopper or the like is necessary to prevent the fixing bracket from being deformed by tightening, and a space of about 25 mm is necessary between the solar cell modules. Therefore, even if the same solar cell module as that of the present embodiment is used, the pitch between the solar cell modules is required to be 834 mm + 25 mm = 859 mm, and 37 solar cell modules can be provided on the wall having a length of 32 m (859 × 37-25). = 31758 mm).

  On the other hand, in the solar cell module of the present embodiment, 38 solar cell modules can be laid on a wall surface having a length of 32 m (837 × 38-3 = 31803 mm). Therefore, in this embodiment, when the effective length that can be laid is limited to 32 m, the power generation amount can be increased by (38 ÷ 37−1) × 100 = about 2.7% compared to the conventional method.

  FIG. 19 is a cross-sectional view illustrating a state in which the solar cell modules according to the second embodiment are stacked. The solar cell module 2 may be temporarily placed on the ground until it is raised to the roof 1. In the solar cell module 2 according to the present embodiment, the bottom 204 side of the side surface portion 201 of the holding frame 200 is inward, but the distance L1 between the lower ends of the side surface portions 201 is the distance between the tips of the light receiving surface side protrusions 202. Is larger than the distance L2.

  Therefore, when the solar cell module 2 is vertically stacked, a gap corresponding to the thickness of the bottom portion 204 is formed between the bottom portion 204 of the holding frame 200 and the solar cell panel 20. Therefore, the solar cell panel 20 of the solar cell module 2 placed below is hardly damaged by the holding frame 200 of the solar cell module 2 stacked above. For example, the distance L1 is 816 mm and the distance L2 is 810 mm.

  Even in the fixture 610 according to the second embodiment, the fixtures 610 having different lengths are prepared as shown in FIG. 12, and a plurality of solar cell modules 2 are fixed by one fixture 610. Good.

  In the above-described embodiment, an example in which a spring washer or a flat washer is not inserted into the dynamic shaft in the fastening screw 8 for fastening and fixing the fixing bracket 6 or the like is shown. Depending on the angle of 801 and the height of the head 802, even if a spring washer or a flat washer is provided below the head 802, it does not interfere with the holding frame of the solar cell module 2. Moreover, although the example in which the female screw is directly formed on the nut 7 has been shown, the nut 7 may be formed of a soft material, and a separate insert nut or caulking nut may be inserted to constitute the female screw portion.

  Further, a plurality of fixing brackets 6 may be fixed to one gantry 4. Further, in the fixing example shown in FIG. 13, the nut support 71 having the abutment surface 73 so that the seat surface of the nut 74 is orthogonal to the axis 801 is shown, but a part of the gantry 410 is abbreviated as the axis 801. The nut may be cut and raised at an orthogonal angle, and the nut may be screwed directly to the fastening screw 8 from the back surface of the cut and raised portion without using the nut catch 71.

  Moreover, in the said embodiment, although the example which is not engaged with the 1st engaging part 601 of the fixing metal fitting 6 fixed to the mount 4 on the most eaves side was shown, the holding frame of a solar cell module, Instead of the flange, a decorative part such as an eaves cover may be engaged with the first engagement portion so that the exposure of the fastening screw or the like is not noticeable.

  Moreover, the fixing metal fitting shown in the said embodiment is applicable also to fixation of the signboard which displays one huge advertisement by arrange | positioning several sheets adjacently.

  As described above, the fixing metal fitting according to the present invention is useful as a fixing metal fitting that fixes objects to be fixed on a fixed surface in a plane.

  DESCRIPTION OF SYMBOLS 1 Roof, 2 Solar cell module (fixed object), 2a 1st solar cell module (fixed object), 2b 2nd solar cell module (fixed object), 20 Solar cell panel, 200 Holding frame, 200a Bottom Side holding frame, 200b Upper holding frame, 201 Side surface portion, 202 Light receiving surface side protrusion, 203 Back surface side protrusion, 204 Bottom portion, 205 Flange portion, 209 Gap portion, 4 mounts, 401 fixing surface, 402 hollow portion, 410 mount 411 Fixed surface, 412 Hole, 5 Wood screw, 6 Fixed bracket, 600 Fixed portion, 600a First contact surface, 600b Second contact surface, 601 First engagement portion, 602 Second engagement portion, 603 Through Hole, 604 contact portion, 605 through hole forming surface, 610 fixing bracket, 7 nut, 701 female screw, 702 contact surface, 8 fastening screw, 801 axis, 802 head , 803 shaft portion 9 electric screwdriver, 10 socket wrench, 11, 12 trapezoidal photovoltaic module (third solar cell modules), 13 square solar cell module (third solar cell module), 900 solar cell system.

Claims (8)

A fixing bracket for fixing the first solar cell module and the second solar cell module arranged side by side along a first direction to a fixed surface,
A through hole is formed between the first solar cell module and the second solar cell module, and a shaft portion of a fastening screw is passed therethrough, and the shaft portion is passed through the through hole. A fixing portion fixed to the fixing surface with a fastening screw;
A first engaging portion extending from the fixing portion toward the first solar cell module and sandwiching an end portion of the first solar cell module with the fixing surface;
A second engaging portion that extends from the fixing portion toward the second solar cell module and sandwiches an end portion of the second solar cell module between the fixing surface and the second engaging portion.
The fastening screw penetrated through the through hole is inclined with respect to the vertical direction of the fixed surface so that its axis does not overlap the first engaging portion and the second engaging portion,
The head of the fastening screw that is penetrated through the through hole fits inside a projected portion obtained by projecting the first engaging portion and the second engaging portion in the vertical direction of the fixed surface. securing bracket.   The fixing bracket according to claim 1, wherein a first abutting surface that abuts the first solar cell module from a side surface is formed on the fixing portion.   3. The fixing bracket according to claim 1, wherein a second contact surface that contacts the second solar cell module from a side surface is formed in the fixing portion. The fixing bracket according to any one of claims 1 to 3,
A mount on which the fixed surface is formed;
A solar cell system comprising the first and second solar cell modules,
The solar cell module has a solar cell panel, and a holding frame surrounding the periphery of the solar cell panel,
The holding frame includes a side surface portion extending in parallel with the side surface of the solar cell panel, and a light receiving surface side that protrudes from the side surface portion toward the solar cell panel and sandwiches the solar cell panel from a light receiving surface and a back surface side thereof. A protrusion, a rear surface-side protrusion, a bottom provided on the fixed surface side from the back surface-side protrusion, and projecting from the side surface toward the solar cell panel; and the solar cell panel side from the bottom And a flange portion that protrudes from the side surface portion to the opposite side of the solar cell panel,
The solar cell system, wherein the first engagement portion and the second engagement portion engage with the flange portion. The fixing bracket according to any one of claims 1 to 3,
A mount on which the fixed surface is formed;
A solar cell system comprising the first and second solar cell modules,
The solar cell module has a solar cell panel, and a holding frame surrounding the periphery of the solar cell panel,
The holding frame includes a side surface portion extending in parallel with the side surface of the solar cell panel, and a light receiving surface side that protrudes from the side surface portion toward the solar cell panel and sandwiches the solar cell panel from a light receiving surface and a back surface side thereof. A projecting portion and a rear surface side projecting portion, and a bottom portion provided on the fixed surface side from the rear surface side projecting portion and projecting from the side surface portion to the solar cell panel side,
The side part is formed such that the part from which the bottom part protrudes is located inside the holding frame rather than the part from which the back side protrusion protrudes,
The solar cell system, wherein the first engagement portion and the second engagement portion are engaged with the light receiving surface side protrusion.   The solar cell system according to claim 5, wherein a distance between lower ends of the side surface portions is larger than a distance between tips of the light receiving surface side protrusions.   The fixing bracket is arranged in a second direction parallel to the fixing surface and perpendicular to the first direction with respect to the first solar cell module or the second solar cell module. The solar cell system according to any one of claims 4 to 6, wherein a plurality of solar cell modules and a plurality of the first solar cell modules or the second solar cell modules are fixed. A fixing bracket for fixing the first fixed object and the second fixed object that display characters, still images, and moving images by being arranged side by side to a fixed surface,
A through hole is formed between the first object to be fixed and the second object to be fixed so as to penetrate the shaft portion of the fastening screw, and the shaft portion is made to penetrate the through hole. A fixing portion fixed to the fixing surface with a fastening screw;
A first engaging portion extending from the fixed portion toward the first fixed object side and sandwiching an end portion of the first fixed object between the fixed surface;
A second engagement portion extending from the fixing portion toward the second object to be fixed and sandwiching the second object to be fixed with the fixing surface;
The fastening screw penetrated through the through hole is inclined with respect to the vertical direction of the fixed surface so that its axis does not overlap the first engaging portion and the second engaging portion,
The head of the fastening screw that is penetrated through the through hole fits inside a projection portion in which the first engagement portion and the second engagement portion are projected in the vertical direction of the fixed surface. securing bracket.

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