JP2013172117A - Structure for fixing solar battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable fixation of a soft fixing sheet material on which a solar battery is placed and fixed to suppress occurrence of vibration on the fixing sheet material so as to improve durability in the fixing sheet material and the solar battery.SOLUTION: A structure for fixing a solar battery in which a fixing sheet material 12 where a solar battery 11 is placed and fixed is fixed on a folded-plate roof 13, comprises a slip-off stop part 14 formed on both sides of the outer peripheral edge of the fixing sheet material 12 and having thickness thicker than the fixing sheet material 12 and extending linearly along the side of the fixing sheet material 12, a holding member 15 which restricts the inside part of the slip-off stop part 14 to prevent the slip-off in the direction orthogonal to the longer direction of the slip-off stop part, and a fixing member 16 which is fixed to a site corresponding to the outside part of the outer peripheral edge of the fixing sheet material 12 in an installation place. In the structure, the holding member 15 and the fixing member 16 are connected by traction means 17 comprising traction bolts and nuts, and the holding member 15 can be drawn to the fixing member 16 by rotation of a screw.

Description

  The present invention relates to a structure for fixing solar cells to places illuminated by sunlight such as exterior materials such as various roofs and outer walls and rooftops, and more specifically, a fixing sheet on which solar cells are placed and fixed. The present invention relates to a solar cell fixing structure that can fix a material to an installation location with high durability.

  Some solar cells have flexible properties, and such solar cells are used by being attached to a flexible fixing sheet material for fixing (for example, see Patent Document 1 below). The fixing sheet material to which the solar cell is attached is not only used as a roof structure itself as in Patent Document 1, but also fixed as disclosed in FIG. 8, paragraphs [0076] to [0079] of Patent Document 2 below. Is done.

  The fixing structure disclosed in FIG. 8 of Patent Document 2 includes a hole formed in a large number around the fixed sheet material, a frame-shaped pipe-shaped support provided at a place where the fixed sheet material is installed, and a string. It is configured, and the fixed sheet material is stretched inside the pipe-shaped support body by passing the string through the hole of the fixed sheet material while winding the string around the pipe-shaped support body.

Japanese Patent No. 2662761 JP 2006-74068 A

  However, the fixing structure as disclosed in FIG. 8 of Patent Document 2 has the following problems. That is, since one string is passed and fixed so as to be wound, loosening occurs due to secular change, and the fixed sheet material is likely to be vibrated by an external force such as wind. As the fixed sheet material, a material having glass fiber (reinforced fiber) is used in order to obtain durability while being flexible. From the characteristics of the glass fiber, the glass fiber is broken by vibration, and as a result, Then, elongation occurs in the fixed sheet material, and the vibration becomes violent. As a result, a failure occurs in electrical contact of the solar cell.

  Accordingly, the main object of the present invention is to improve durability by performing fixing that can suppress generation of vibration.

  Means therefor is a solar cell fixing structure for fixing a fixed sheet material on which a solar cell is placed and fixed to an installation location, and is formed on at least both sides of the outer peripheral edge of the fixed sheet material. A retaining portion that is thicker than the thickness and extends linearly along the side of the fixed sheet material, and restrains the inner portion of the retaining portion to prevent the retaining portion in a direction perpendicular to the longitudinal direction of the retaining portion. A holding member and a fixing member that is fixed to a portion corresponding to the outside of the outer peripheral edge of the fixing sheet material at the installation location, and the holding member and the fixing member rotate the screw with respect to the fixing member. It is a solar cell fixing structure connected by the pulling means to draw.

  In this structure, the retaining member of the fixed sheet material is retained so that the retaining member can be retained, and the retaining member is pulled by the traction means with respect to the stationary member, and has the retaining member on at least both sides. Is installed at the installation location in a tensioned state so that it can be pulled at least on both sides to suppress vibration. And the tension | tensile_strength which tensions a fixed sheet | seat material can be adjusted with a traction means, and when tension | tensile_strength falls, the screw of a traction means can be rotated and tension | tensile_strength can be raised.

  According to the present invention, the tension can be adjusted when the fixed sheet material is fixed, and the tension is adjusted when the fixed sheet material is loosened, so that the fixing of the fixed sheet material can be suppressed. For this reason, it is possible to improve the durability of the solar cell by preventing the deterioration or damage of the reinforcing fiber of the fixed sheet material, the occurrence of elongation of the fixed sheet material, and the occurrence of poor electrical contact of the solar cell.

The perspective view which shows a solar cell fixing structure. The disassembled perspective view of a solar cell fixing structure. The perspective view of a fixing sheet material and a holding member. The perspective view of a holding member and a fixing member. Sectional drawing which shows the example of fixation of a fixing member. Sectional drawing of an action state. The perspective view of the solar cell fixing structure which concerns on another example. Sectional drawing of the solar cell fixing structure which concerns on another example. The perspective view of the holding member of FIG. Sectional drawing of the solar cell fixing structure which concerns on another example. Sectional drawing of the solar cell fixing structure which concerns on another example.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a solar cell fixing structure for fixing a fixing sheet material 12 on which a solar cell 11 is placed and fixed to an installation location. In the example shown in FIG. Some or all of the above.

  The solar cell 11 has a belt shape that is flexible and flexible. The fixing structure for fixing the solar cell on the folded plate roof 13 is formed on at least both sides of the outer peripheral edge of the fixed sheet material 12 as shown in the exploded perspective view of FIG. The retaining portion 14 that is thicker than the thickness of 12 and extends linearly along the side of the fixed sheet material 12, and in a direction orthogonal to the longitudinal direction of the retaining portion by restraining the inner portion of the retaining portion 14. A retaining member 15 that prevents the retaining sheet 15 from being detached, a fixing member 16 that is fixed to a portion of the folded plate roof 13 that corresponds to the outside of the outer peripheral edge of the fixed sheet material 12, and the holding means 15 and the fixing member 16 are connected to each other. It is comprised by the traction means 17 to do.

  The fixed sheet material 12 is formed by coating a glass fiber fabric with a difluoroethylene resin, has flexibility, and is excellent in heat resistance and weather resistance. Resins other than the above-mentioned difluoroethylene resin, for example, thermoplastic resins such as tetrafluoroethylene resin, vinyl chloride resin, polyethylene resin, polypropylene resin, polystyrene resin, and nylon resin can be used. Since the upper surface of the folded plate roof 13 which is the installation location is a square in plan view, the fixed sheet material 12 is also formed in a square shape, specifically a rectangular shape accordingly, and the longitudinal direction of the fixed sheet material 12 is the folded plate roof 13. It is fixed so that the direction coincides with the gradient direction. The length (width dimension) in the direction orthogonal to the longitudinal direction of the fixed sheet material 12 is appropriately set so as not to be too long so that it can be stretched with tension when pulled in the width direction. The fixed sheet material 12 is fixed so that a plurality of fixed sheet materials 12 are juxtaposed in the left-right direction of the folded plate roof 13.

  The retaining portions 14 are formed on both sides of the outer peripheral edge of the rectangular fixed sheet material 12 as described above, that is, on both sides in a direction perpendicular to the longitudinal direction. The retaining portion 14 can be formed by so-called KEDER processing.

  That is, as shown in FIG. 3, the Kedder structure is provided by welding on both sides of one rectangular sheet body 12a, in other words, on a pair of two sides facing each other in the direction orthogonal to the longitudinal direction (width direction). It is done. The Kedder structure is composed of a flexible long edge rope 14a having a circular cross section, and a flexible long band-shaped connecting sheet 14b that connects the edge rope 14a and the sheet body 12a. The edge rope 14a is made of a synthetic resin or the like and is flexible, but is not crushed thinner than the thickness of the sheet body 12 even when compressed.

  The processing is performed by covering the edge rope 14a so as to be wrapped and wrapped in the middle in the width direction of the coupling sheet 14b, sandwiching the edge of the sheet body 12a at the both side portions, and fixing this state by high frequency welding. The four corner portions 12b of the sheet body 12a are doubled for reinforcement.

  Since the fixed sheet material 12 is configured as described above, it is flexible including the retaining portion 14 and can be reduced by being wound or folded. The solar cell is placed and fixed on the surface (upper surface) of the fixed sheet material 12. The fixing is performed by an appropriate fixing means such as a double-sided adhesive hand tape. For example, as shown in FIGS. 1 and 2, a plurality of fixings are made in the left-right direction (width direction) which is a direction orthogonal to the longitudinal direction of the fixing sheet material 12. The solar cells 11 are arranged. Since the long side of the solar cell 11 is oriented in the same direction as the gradient direction of the roof, the length of the side in the direction blocking the flow of rainwater can be shortened. Moreover, the wiring of the solar cell 11 can be collected above the gradient direction of the folded plate roof 13.

  The holding member 15 is made of metal and has an elongated shape as shown in FIG. A retaining holder 18 for retaining the retaining part 14 of the fixed sheet material 12 is formed on one side in a direction perpendicular to the longitudinal direction, and a traction retaining part 19 for retaining the traction means 17 is formed on the other side. Has been.

  The retaining holder 18 includes a retaining space 18a that accommodates the retaining section 14 and a communication gap through which the retaining space 18a communicates with the outside to pass a sheet-like portion in the vicinity of the retaining section 14 in the fixed sheet material 12. 18b. The communication gap 18b is formed in the middle in the thickness direction.

  As shown in FIG. 4, the traction holding unit 19 is a part that holds the head 20 a of the traction bolt 20 constituting the traction means 17 so that the traction bolt 20 can be prevented from coming off, and the traction bolt 20 cannot rotate the head 20 a. A holding space 19a that is housed in a clean state, and a communication gap 19b that communicates the holding space 19a with the outside and passes the shaft portion 20b of the traction bolt 20. This communication gap 19b is also formed in the middle in the thickness direction.

  The holding member 15 having such a configuration includes a holding member carrier 15a that is vertically divided into two at the position where the retaining portion 14 is sandwiched. That is, if the holding member carriers 15a are overlapped in the vertical direction, the retaining portions 14 or the head portions 20a of the traction bolts 20 can be accommodated in the holding spaces 18a and 19a formed in cooperation with each other. .

  The holding member carriers 15a are coupled to each other by a bolt 22 inserted into a through hole 21 formed in a portion between the holding spaces 18a and 19a and the communication gaps 18b and 19b and a nut 23 screwed into the bolt 22.

  The size of the holding space 18a of the retaining portion 18 may be a size corresponding to the retaining portion 14 or a size that compresses the retaining portion 14. Depending on the dimensions of the retaining member 18 and the traction retaining part 19, the retaining member 14 and the head 20 a of the traction bolt 20 may be retained on the retaining member 15 after the retaining member carriers 15 a are overlapped. You can also.

  The length of the holding member 15 (holding member carrier 15a) may be long like the retaining portion 14, but as shown in FIGS. 1 and 2, an appropriate length in consideration of transportation and storage. It is good to make it abut against each other when fixing to the retaining portion 14.

  The fixing member 16 is formed in the shape of an elongated hollow box, and is composed of a metal-made main body 24 having a bottomed box shape as shown in FIG. 4, and a lid body 25 that closes the opening of the upper surface so as to be opened and closed. Is done. On both side walls 24a in a direction orthogonal to the longitudinal direction of the main body 24, a number of holding holes 24b for holding the shaft portion 20b of the pulling bolt 20 are formed along the longitudinal direction. Of the holding holes 24b formed in the side walls 24a, the holding hole 24b on one side and the holding hole 24b on the other side are displaced from each other in the longitudinal direction, and the shaft portions 20b of the held traction bolts 20 interfere with each other. To avoid doing.

  A nut 26 is screwed into the shaft portion 20b of the traction bolt 20 held in the holding hole 24b, and is configured to prevent the traction bolt 20 from coming off and tow the traction bolt.

  The fixing member 16 illustrated in FIG. 4 is an example of the fixing member 16 that is fixed to the inside of the installation location, and the traction bolt 20 can be held on both sides, but in the fixing member that is fixed to the outer peripheral portion of the installation location. A fixing member (not shown) having a side wall and a holding hole on only one side is used. The fixing member 16 having the holding holes 24b on both side walls 24a may be used.

  Such a fixing member 16 is fixed to an installation location by an appropriate means. When the installation location is the folded plate roof 13, as shown in FIG. 2, the well-known roof fixing bracket 27 using the tightening portion 13 a of the folded plate roof 13 and the well-known bridge spanned between the fixing brackets 27. The angle member 28 is fixed.

  As described above, a plurality of fixed sheet materials 12 are provided and fixed in parallel in the left-right direction of the folded plate roof 13, so that the above-mentioned roof fixing bracket 27 and the angle member 28 are fixed sheets in the left-right direction of the folded plate roof 13. A plurality of the members 12 are arranged at intervals slightly wider than the width of the material 12. Between the angle members 28, a round bar-like spacer bar 29 is installed in order to maintain a gap.

  The fixing member 16 is fixed to the angle member 28 by bolts and nuts or welding. In this fixing, when the inclination of the solar cell 11 is made steeper than the inclination of the folded plate roof 13, for example, as shown in FIG. 5, or on the contrary, it is made gentle between the angle member 28 and the fixing member 16. An appropriate angle holding member 30 is interposed.

  The pulling means 17 pulls the holding member 15 toward the fixing member 16 by rotating the screw. As described above, one end is held by the holding member 15 and the other end is held by the fixing member 16. The traction bolt 20 is constituted by a nut 26 screwed onto the shaft portion 20b. That is, by rotating the nut 26, the traction bolt 20 that is non-rotatably held by the holding member 15 can advance and retreat.

  In the solar cell fixing structure configured as described above, first, as shown in FIG. 2, the on-roof fixing bracket 27, the angle member 28, and the spacer rod 29 are provided at predetermined locations on the folded plate roof 13. After fixing and forming a base for fixing the fixing member 16, the fixing member 16 is fixed to the angle member 28.

  Next, the fixed sheet material 12 and the solar cell 11 are raised on the roof. Since both the fixed sheet material 12 and the solar cell 11 can be wound or folded, the work can be easily performed. Subsequently, the holding member 15 is fixed to the retaining portions 14 on both sides of the fixed sheet material 12 on the roof.

  Since the holding member 15 is composed of a pair of upper and lower holding member carriers 15a, it is only necessary to fix the retaining portion 14 with the bolt 22 nut 23 so that the retaining portion 14 is sandwiched by the retaining member 18 of the retaining member carrier 15a. Easy to do. If necessary, it is also possible to hold the retaining portion 14 by holding it firmly. At least the inner portion of the retaining portion 14 is restrained by the retaining portion 18 of the retaining member 15, and can be retained in a direction perpendicular to the longitudinal direction of the retaining portion 14 along the surface direction of the fixed sheet material 12.

  In this way, after the holding member 15 is fixed to the retaining portion 14 or when the retaining member 15 is secured to the retaining portion 14, the traction bolt 20 is also retained. That is, the head 20a of the traction bolt 20 is sandwiched or slid and held with respect to the traction holding portion 19 of the retaining member carrier 15a.

  Thereafter, the holding member 15 to which the traction bolt 20 is attached is brought close to the side surface of the fixing member 16 with the lid body 25 removed, and the shaft portion 20b of the traction bolt 20 is inserted into the holding hole 24b of the fixing member 16. The nut 26 is screwed into the shaft portion 20b that has entered from the holding hole 24b. The traction bolts 20 are held in all the holding holes 24b and the nuts 26 are screwed together, and then all the nuts 26 are tightened evenly.

  By tightening the nut 26, the pulling bolt 20 is pulled, and as shown in FIG. 6, the fixed sheet material 12 is tensioned in a tensioned state. The nut 26 is tightened so as to have an appropriate tension state.

  Since the retaining member 15 is held over the entire length of the retaining portion 14 extending in the longitudinal direction of the fixed sheet material 12, the fixed sheet material 12 is not contracted in the longitudinal direction, and the state in the longitudinal direction is maintained. Thus, the fixed sheet material 12 is pulled in the left-right direction (width direction).

  The solar cell 11 is fixed to the fixed sheet material 12 in this state or the fixed sheet material 12 in a state before the tension is applied by tightening the nut 26 by an appropriate fixing means such as an adhesive or a double-sided adhesive tape.

  After tightening the nut 26, the lid 25 closes the opening of the fixing member 16.

  If necessary, as shown in FIG. 7, the side of the fixed sheet material 12 that does not have the retaining portion 14 can be appropriately fixed to the spacer rod 29 with the string-like body 31. Further, the retaining portions 14 can be formed on all four sides of the fixed sheet material 12 and can be fixed by being stretched in all directions.

  The fixed sheet material 12 fixed in this way is always in a tensioned state, as shown in FIG. Since the drawing amount is adjusted by rotating the screw, an appropriate tension state of the fixed sheet material 12 can be obtained. For this reason, it is hard to produce slack and can also suppress a vibration. And when looseness arises, if the cover body 25 of the fixing member 16 is opened and the nut 26 is tightened, a taut state is obtained and vibration can be suppressed.

  Since vibration can be suppressed, damage to the glass fibers of the fixed sheet material 12 can be suppressed, and the strength of the fixed sheet material 12 can be maintained and the durability of the fixed sheet material 12 can be obtained. Since the fixed sheet material 12 does not stretch, the occurrence of poor electrical contact of the solar cell 11 can be avoided, and the durability of the solar cell can be improved.

  In addition, the solar cell fixing structure includes a flexible retaining portion 14 formed on the flexible fixing sheet material 12 and a holding member 15 for holding the same, and pulls the holding member 16 by the rotation of the nut 26. Therefore, it is easier to construct than a conventional structure that is fixed using a string. Moreover, since the fixed sheet material 12 can be rolled or folded, the labor required to be raised to a high place on the roof can be reduced, and since there are few members and materials necessary for fixing, the construction is easy from this point. . Nevertheless, as described above, a tensioned fixed state can be easily obtained, and high durability can be obtained.

  Further, as described above, the number of members necessary for fixing the fixed sheet material 12 can be reduced, and the retaining portion formed on the fixed sheet material 12 can be formed by keder processing, so that the manufacturing cost can be suppressed. .

Hereinafter, other examples will be described. In this description, parts that are the same as or equivalent to those in the above-described configuration are given the same reference numerals, and detailed descriptions thereof are omitted.
FIG. 8 is a cross-sectional view showing an example in which the installation location is the upper surface of the tent warehouse 41. Since the tent warehouse 41 is configured by stretching an outer cloth 43 on the pipe 42, the fixing member 16 is directly fixed to the pipe 42.

  In FIG. 8, the right fixing member 16 is fixed to the inside of the installation location, is formed in a U-shaped cross section, and the intermediate fixing piece 16 a is fixed to the pipe 42. Since the pipe 42 is circular in cross section, an auxiliary metal fitting 44 having a U-shaped cross section is provided to form a fixing surface above the pipe 42 in order to stabilize the fixed state. In FIG. 8, the left fixing member 16 is fixed to the end of the installation location, is formed in an L-shaped cross section, and one fixing piece 16 a is fixed to the pipe 42. Also in this case, an auxiliary metal fitting 45 having an L-shaped cross section is put on the pipe 42 in order to stabilize the fixed state. The auxiliary metal fittings 44 and 45 can be fixed by welding as well as tapping screws and bolts as shown.

  Further, the holding member 15 is not composed of a holding member carrier divided into upper and lower parts, but is constituted by one member as shown in FIG. 9, and a holding space 18a having a circular cross section is formed on one side in a direction perpendicular to the longitudinal direction. It has a retaining portion 18 having a retaining portion, and a traction retaining portion 19 having a rectangular cross-section on the other side.

  In order to hold the retaining portion 14 in the retaining portion 18, when the retaining portion 18 is inserted into the retaining portion 18 in order from the longitudinal end of the retaining portion 14, the state shown in FIG. 8 is obtained.

  A square nut 26 is held in the traction holding unit 19 so as not to rotate. A shaft portion 20b of the pulling bolt 20 held in the holding hole 24b of the fixing member 16 is screwed into the nut 26. That is, when the traction bolt 20 is rotated and the nut 26 is attracted, the holding member 15 is attracted.

  In order to reduce the number of parts by omitting the auxiliary metal fittings 44 and 45, for example, as shown in FIG. 10, protrusions 16b are formed on both sides of the lower end of the fixing member 16, and the protrusions 16b The both ends of a U-shaped fixing bolt 46 fitted to the pipe 42 may be inserted and fixed with nuts 47.

  FIG. 11 is a cross-sectional view of a fixing structure capable of maintaining a tensioned state in which the fixed sheet material 12 is tensioned and preventing the fixed sheet material 12 from undergoing large vibrations even in unexpected strong winds.

  That is, the urging means 51 is provided on the shaft portion 20b of the traction bolt 20 constituting the traction means 17, and the urging force by the urging means 51 is also applied when the screw is rotated and tightened. . FIG. 11A is an example in which a compression coil spring 51 a constituting the urging means 51 is held between the inner surface of the side wall 24 a of the fixing member 16 and the nut 26. In the figure, 51b is a washer. The compression coil spring 51a and the washer 51b are preferably integrated. FIG. 11B is an example in which the urging means 51 is held under the head 20 a of the traction bolt 20 held by the holding member 15.

  In any configuration, the fixed sheet material 12 is stretched by pulling by pulling the pulling bolt 20 and pulling by the biasing force of the biasing means 51. By setting the spring constant to a high value, it is possible to suppress displacement by an external force.

  With such a configuration, it is possible to strongly maintain a state in which an appropriate tension is applied to the fixed sheet material 12, and it is possible to suppress loosening of the traction bolt 20 and the nut 26 by the urging means 51 and to fix the fixed sheet material 12 due to a gust of wind. As a result, it is possible to suppress the occurrence of rapid deformation and vibration even when the film is rolled, resulting in a highly durable fixing structure as described above.

In correspondence between the configuration of the present invention and the above configuration,
The grounding location of the present invention corresponds to the folded plate roof 13 and the tent warehouse 41,
Similarly,
The traction means corresponds to the traction bolt 20 and the nut 26,
The bolt corresponds to the traction bolt 20,
The present invention is not limited to the above-described configuration, and other configurations can be employed.

  For example, the fixed sheet material may have a shape other than a square shape. The position where the retaining portion is formed can be appropriately determined depending on the shape of the fixed sheet material and the manner of stretching.

  The fixing member is not limited to a box shape, and can be formed in an appropriate shape as long as the traction means can be held.

  Further, the retaining portion formed on the fixed sheet material may be in a shape in which the inner portion is constrained by the holding member, and does not necessarily have a circular cross section as described above, and may have a triangular shape, a rectangular shape, or the like. Correspondingly, the shape of the portion of the holding member that holds the retaining portion can be appropriately set.

DESCRIPTION OF SYMBOLS 11 ... Solar cell 12 ... Fixed sheet material 13 ... Folded plate roof 14 ... Retaining part 15 ... Holding member 15a ... Holding member carrier 16 ... Fixing member 17 ... Traction means 20 ... Traction bolt 26 ... Nut 41 ... Tent warehouse

Claims (5)

A solar cell fixing structure for fixing a fixing sheet material on which a solar cell is placed and fixed to an installation location,
A retaining portion that is formed on at least both sides of the outer peripheral edge of the fixed sheet material, and is thicker than the thickness of the fixed sheet material and extends linearly along the side of the fixed sheet material,
A holding member that restrains the inner portion of the retaining portion and prevents the retaining portion in a direction perpendicular to the longitudinal direction of the retaining portion;
A fixing member fixed to a portion corresponding to the outside of the outer peripheral edge of the fixed sheet material at the installation location;
A solar cell fixing structure in which the holding member and the fixing member are connected by traction means that draws the holding member to the fixing member by rotation of a screw. The solar cell fixing structure according to claim 1, wherein the pulling means includes a bolt having one end held by a holding member and the other end held by a fixing member. The fixed sheet material is formed in a square shape,
The solar cell fixing structure according to claim 1 or 2, wherein the retaining portion is formed on a pair of two opposing sides. The said pulling means is provided in the both sides of the fixing member fixed inside the said installation location among the said fixing members, The said fixing sheet material is arranged in multiple numbers in any one of Claims 1-3. The solar cell fixing structure according to one item. The solar cell fixing structure according to any one of claims 1 to 4, wherein the holding member includes a holding member carrier that is vertically divided at a position sandwiching the retaining portion.

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