JP2011240933A - Packing structure and laminate-packing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing structure by which even a large-sized solar battery panel can effectively and inexpensively be packed.SOLUTION: The packing structure 1 laminate-packs a pair of solar battery panel bodies 2 in such a manner that the terminal boxes 9 may be confronted with each other. The packing structure 1 includes: a bottom surface part which has a rectangular shape, and on which the solar battery panel body 2 is mounted; an external corrugated board 17 having rectangular shorter edge folding parts 27 and longer edge folding parts 29 which are installed in a manner to respectively project to the outside on the four edges of the bottom surface part; a partitioning plate 19 having an approximately rectangular shape which is interposed within the pair of solar battery panel bodies 2; and a cellular cushioning material 21 which is mounted on the top of the laminated solar battery panel bodies 2 in a manner to cover a range being smaller than the aluminum frames 15. The shorter edge folding parts 27 and the longer edge folding parts 29 are folded in a manner to cover the peripheral edge parts of the side surfaces and the top surfaces of the pair of solar battery panel bodies 2. An overlapped part at which the shorter edge folding part 27 and the longer edge folding part 29 are stacked is formed at four corners, and spaces between respective overlapped parts are fastened by a band 23 to constitute the packing structure 1.

Description

  The present invention relates to a packing structure and a stacked packing structure for packing and transporting a solar cell panel.

  In transporting the solar cell panel from the manufacturing site to the installation site, a packing operation is required to prevent damage or damage. On the other hand, solar cell panels tend to be used in large areas due to recent improvements in manufacturing technology, and are becoming larger in size and weight. For transportation to overseas or domestic mass-use sites, a sturdy packaging structure is used that allows for container transportation.

  For example, as shown in Patent Document 1, a solar cell panel is stacked on a pallet in a horizontal state with a corrugated board sandwiched between solar cell panels, and the periphery is surrounded by a plate material and packed with a fastening band. On the premise that loading / unloading work is performed by a large forklift, 25 solar cell panels are stored per pallet as a work unit, and the total amount is 500 kg to 600 kg. In addition, the entire package is covered with a plastic cover that is transparent and impervious to water.

By the way, as in Patent Document 1, in which 25 solar cell panels are transported as an integral package, it is efficient to transport a large number of solar cell panels to a delivery location. It is inefficient to transport solar cell panels to a place where the number of units is small, and there is a difference in the number of solar panels.
In other words, when shipping to domestic homes and small and medium businesses, the required number of solar panels varies from about 10 to about 100, so 25 solar panels per pallet can be left as they are. Since it cannot be used, a transportation mode that takes into account unloading by a truck vehicle or movement at an installation site is desired.

Moreover, when individually sending a solar cell panel from a delivery place to a construction place, it is necessary to separately pack one sheet to a plurality of sheets. It took time and effort to pull out the required number of solar panels and package them separately.
In consideration of these, it has been proposed to stack and transport solar cell panels in a small number of 1 to 2 units and transport them in large quantities.
When packing in a small number of 1 to 2 units, the general form is a solar cell panel in a C-type box (with a lower box and an upper box) or an N-type box (with a lid on top) However, since it becomes a strict box that prevents the glass breakage of the solar cell panel, a large amount of packing materials are required and the packing cost is high.

In order to simplify the packing form, reduce the packing material, and reduce the packing cost, for example, those shown in Patent Documents 2 to 4 have been proposed.
What is shown in Patent Document 2 is a packing structure of one solar cell panel, and has a structure in which two long sides of the solar cell panel are covered with a packing material assembled in a box shape. The packing material is provided with locking portions at the top and bottom, and can be stacked so that the adjacent locking portions engage with each other when the packed solar cell panels are stacked so as not to collapse the load.

The thing shown by patent document 3 is packing two solar cell panels, and coats and wraps two long side parts of a solar cell panel with a packing material. This packing material is devised with a partition structure for holding a gap between solar cell panels.
What is shown in Patent Document 4 is for packing two solar cell panels, and covering and packaging four sides of the solar cell panel with a packing body.
This is devised so that the side wall portion of the package can be folded and held and the partition plate inserted between the solar cell panels can be cut out from the side wall portion and bent.

JP 2007-223639 A Utility Model Registration No. 3097147 Japanese Patent No. 3828338 JP 2009-173332 A

By the way, in what is shown by patent document 2, the intensity | strength of a latching | locking part is weak and the effect in a large sized solar cell panel is doubtful.
Since what is shown in Patent Document 3 is basically a two-sided package, application to a large-sized solar cell panel, which is a heavy object, may have insufficient protection. Moreover, since the center part of the photovoltaic cell panel arrange | positioned facing is not partitioned, it is necessary to fix a cable so that the cable extended from a terminal box may not hit the panel surface of the photovoltaic cell panel which opposes. There is a problem that it takes time to form the partition and to process the end of the packing material that surrounds the end of the short side.

  The one shown in Patent Document 4 has a complicated cardboard shape, and the assembly work becomes complicated. As a result, there is a problem that the packaging cost increases despite a decrease in the packaging material.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a packing structure and a stacked packing structure that can be packed effectively and at a low cost even with a large-sized solar battery panel. And

In order to solve the above problems, the present invention employs the following means.
That is, according to the first aspect of the present invention, a pair of objects to be packaged in which four sides of a rectangular solar cell panel each having a terminal portion on one surface are held by a frame, the one surface faces each other, and the planar position of the terminal portion is A packing structure in which the relationship is a point-symmetrical relationship with respect to the center of the one surface and is packed in a rectangular shape, has a rectangular shape, and a bottom portion on which the package object is placed, and four sides of the bottom portion A packing member having a rectangular bent portion provided so as to protrude toward the outside, and a substantially rectangular buffer member interposed between the pair of objects to be packaged are laminated. An elastic member placed on an upper part of the packaged object so as to cover the solar cell panel in a range smaller than the frame, and the bent portion includes a side surface and an upper surface of the pair of packaged objects 4 corners of the upper surface Wherein the short side portion side the overlapping portion and the overlapping folded portions of the bent portion and the long side portion side is formed, a packaging structure in which between the respective overlapping portions, which are fastened by a plurality of bands.

  In the packaging structure according to this aspect, the first solar cell panel with a frame, which is an article to be packaged, is placed in a horizontal state so that the terminal box is on the upper side, and a buffer member is placed thereon. . Next, the solar cell panel with the second frame is horizontally placed on the buffer member so that the terminal box is on the lower side to form a pair of packages. Further, an elastic member is placed on the upper surface of the pair of objects to be packaged, the bent portion is bent in the upper direction at the periphery of the lower surface of the pair of objects to be packaged, and the periphery of the upper surface of the pair of objects to be packaged. The bent portion is bent in a substantially horizontal direction by the portion so as to cover the side surface and the peripheral edge portion of the upper surface of the pair of objects to be packaged. Next, a packing structure is formed by fastening a plurality of overlapping portions where the bent portions formed at the four corners of the upper surface of the pair of objects to be packaged overlap with each other with a band.

Thus, since the four sides of the article to be packaged are covered with the packaging member, even a large-sized solar cell panel can be protected from the damage means.
Since the upper surface of the article to be packaged is only covered with the peripheral edge by the packaging member, the packaging member can be made cheaper accordingly. Further, if a transparent or translucent member is used as the elastic member, the contents can be observed as the glass of the solar cell panel, so that careful handling can be promoted during transportation work, and damage to the solar cell panel can be suppressed.
Since the buffer member is present between the first and second solar cell panels that are the objects to be packaged, the cable does not damage the counterpart solar cell panel even if the cable extending from the terminal box is not fixed. Since the cable fixing operation can be omitted and the packaging member is simply bent, the packaging operation time can be reduced.
Since the overlapping portions formed at the four corners are formed by overlapping bent portions, the strength is high. Thereby, even if it packs up a packing structure, since it is supported by the duplication part with high intensity | strength, it can stack without inclining.

  In the aspect, it is preferable that the overlapping portion is formed such that the bent portion on the long side portion side is on the upper side with respect to the upper surface than the bent portion on the short side portion side. is there.

In the packaging of solar panels installed horizontally, when the overlapping parts are fastened with a band, the upper bent part is the space below the thickness of the packaging member between the solar cell panel member at the fastening position. Because there is, it moves downward by that much. With this movement, the folded portion of the packing member located at the overlapping portion is pulled in a small amount so that a step is generated in the downward direction.
Since the overlapping part is formed so that the long side part side is on the upper side, the interval between the overlapping part and the band fastening part can be increased. Therefore, the step generated in the lower direction of the upper bent portion of the packaging member located in the overlapping portion becomes smooth, and the influence on the deformation of the packing member in the bent portion located in the overlapping portion can be reduced. Overlapping portions can be formed correctly and accurately.

In the said aspect, the peripheral part area | region of the said elastic member may be comprised so that it may be covered with the said bending part.
If it does in this way, since a possibility that an elastic member may fall out can be controlled, the upper surface of a pair of to-be-packaged objects can always be protected from being damaged.

  In the said aspect, the engagement part engaged with the edge | side of the said to-be-packaged item may be provided in at least one place of the peripheral part of the said buffer member.

When the second solar cell panel is placed, if the position of the buffer member is shifted, the position of the buffer member is shifted to an appropriate position when the weight of the article to be packaged (second solar cell panel) is large. The work is difficult, and a complicated return work for correcting the position of the buffer member after lifting the second solar cell panel again is required.
In this aspect, the buffer member can be installed and held in the correct position by installing the buffer member so that the engaging portion is engaged with the side of the article to be packaged.

  In the above aspect, the bent portion positioned below the upper surface in the overlapping portion is configured such that a protruding amount increases outward from the bottom portion to a portion forming a side surface. The protrusion part which can be bend | folded with respect to may be formed.

The bent part located on the lower side in the overlapping part is folded first. When the bent portion is folded, the protruding portion is present at the portion forming the side surface so as to protrude outward. When the folded portion located on the upper side in the overlapping portion that is folded later is folded, the side surface is folded so that the protruding portion enters the inside of the folded portion.
In this way, even if a gap is generated between the adjacent bent portions on the long side and the short side, the projecting portion covers the gap without hindering the bending on the long side and the short side. Therefore, it can prevent that the member of the solar cell panel in an inside is exposed.

  A second aspect of the present invention is a laminate in which a plurality of the packing structures are supported on a pallet as a laminated body that is stacked in the vertical direction in a horizontal state, and the laminated body and the pallet are integrally fastened by a plurality of bands. It is a packing structure.

Since there are overlapping portions where the packing members overlap at the four corners of the upper surface periphery of the packing structure, the overlapping portions can effectively suppress the inclination of the laminate.
Since the bottom surface portion of the upper packaging structure serves as a protective material for the upper surface of the lower packaging structure when the packaging structure is loaded, damage to the solar cell panel can be suppressed without using an extra buffer member.
In fastening with the band, it is preferable to reinforce the corner portion between the side surface and the upper surface of the laminate with a packing material or a similar material.

In the said aspect, you may make it wind around the side surface of the said laminated body with a transparent or semi-transparent film.
In this way, since the plurality of packing structures constituting the laminated body are further integrated than the fastening by the plurality of bands, the collapse of the laminated body can be more reliably prevented even if the handling is rough. .

In the said aspect, you may make it cover at least the upper surface of the said laminated body with a transparent or translucent cover.
If it does in this way, since a cover will cover including the part which is not covered with the packing member in the uppermost packing structure, the bad influence by rain etc. can be prevented, for example.

In the said aspect, you may make it the upper surface part of the said laminated body be covered with the rigid member.
If it does in this way, since a to-be-packaged object can be reliably protected with respect to the fallen object etc. in transportation, the reliability in transportation can be improved further.

According to the packaging structure according to the present invention, since the packaged object is covered on the four sides by the packaging member, even a large-sized solar cell panel can be sufficiently protected from scratches from the outside. .
Since the upper surface of the article to be packaged is only covered with the peripheral edge by the packaging member, the packaging member can be made cheaper accordingly. In addition, if a transparent or translucent member is used as the elastic member, the contents can be observed as a solar cell panel, so that careful handling can be promoted during transportation work.
Since the buffer member exists between each packaged item (between the solar cell panels), there is no fear of damaging the counterpart solar cell panel without fixing the cable extending from the terminal box. Since the cable fixing operation can be omitted and the packaging member is simply bent, the packaging operation time can be reduced.
Even when the packing structure is stacked, the packing structure can be stacked on the pallet without being inclined because it is supported by the overlapping portion so as to have a high strength and a stable structure.
According to the stacked packaging structure according to the present invention, the overlapping structure in which the packing members overlap is present in the packing structure, and thus the overlapping part in which the packing structure is stacked can effectively suppress the inclination of the stacked body. Further, since the bottom surface portion of the upper packaging structure serves as a protective material for the upper surface of the lower packaging structure when the packaging structure is loaded, damage to the solar cell panel can be suppressed without using an extra buffer member.

It is a perspective view which shows the packing structure concerning one Embodiment of this invention. It is XX sectional drawing of FIG. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the packing structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the laminated packaging structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the laminated packaging structure concerning one Embodiment of this invention. It is a perspective view which shows the procedure which forms the laminated packaging structure concerning one Embodiment of this invention. It is a perspective view which shows another embodiment of the partition plate concerning one Embodiment of this invention. It is a perspective view which expands and shows a part of partition plate of FIG. It is a perspective view which expands and shows a part of partition plate of FIG. It is a perspective view which shows another embodiment of the partition plate concerning one Embodiment of this invention. It is a perspective view which shows another aspect of the outer side cardboard concerning one Embodiment of this invention. It is a perspective view which shows another embodiment of the laminated packing structure concerning one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing a packaging structure 1 according to the present embodiment. 2 is a cross-sectional view taken along the line XX of FIG. 3 to 9 are perspective views showing the structure of the packing structure and the procedure for forming it.
The packaging structure 1 is a packaging for simplifying and simplifying the packaging form as much as possible, reducing the packaging material and reducing the packaging cost, and transporting two solar panels 3 to the country (or a nearby foreign country). It is used for unloading and unpacking work on site or for storage.

In the solar cell panel 3, a photoelectric conversion layer 7 that converts sunlight into electric power is formed on one surface on a glass substrate 5, and supplies electric power from a terminal box (terminal portion) 9 to the outside. The solar cell panel 3 has a rectangular shape with dimensions of, for example, 1.4 m × 1.1 m × t 3 to t 5 mm.
The photoelectric conversion layer 7 has a large number of power generation cells. A large number of power generation cells are connected in series, and these are collected in the terminal box 9 by a copper foil wiring (not shown) to extract electric power. At this time, the surface on which the photoelectric conversion layer 7 is formed is covered with an adhesive filler sheet (EVA: ethylene vinyl acetate copolymer, etc.) (not shown) so as to cover the entire photoelectric conversion layer 7. A back sheet 8 using a material having a high waterproof effect is installed and sealed. A positive terminal 11 and a negative terminal 13 are provided from the terminal box 9.

On the four sides of the solar cell panel 3, an aluminum frame (frame) 15 is attached to add strength to the solar cell panel 3 and serve as a mounting seat for the installation location.
The solar cell panel 3 (packaged object) 2 is formed by the solar cell panel 3 and the aluminum frame 15. The solar cell panel body 2 has, for example, a rectangular shape with outer dimensions of 1.41 m × 1.11 m × t35 mm, and a mass of about 21 kg.

The packing structure 1 has two solar cell panel bodies 2 to be a pair of objects to be packaged, one surface on which the photoelectric conversion layer 7 is formed faces each other, and the planar positional relationship of the terminal box 9 is relative to the center of the surface. Are stacked and packed so as to have a point-symmetrical relationship. In other words, the terminal boxes 9 of the two solar cell panel bodies 2 that are generally installed at positions eccentric from the center of the surface are arranged in a positional relationship where the terminal portions are not close to each other and do not interfere with each other in the horizontal plane.
Hereinafter, the structure of the packing structure 1 and the procedure for forming it will be described with reference to FIGS.
The packing structure 1 is interposed between two solar cell panel bodies 2 and an outer box cardboard (packing member) 17 that covers the bottom surface, side surface, and peripheral edge of the upper surface of the two solar cell panel bodies 2. A substantially rectangular partition plate (buffer member) 19, a bubble cushioning material (elastic member) 21 placed on top of the two solar cell panel bodies 2, and a band 23 that fastens the outer box cardboard 17. Is provided.

The partition plate 19 is a substantially rectangular plate member that covers substantially the entire surface of the solar cell panel body 2, and is formed of a corrugated cardboard sheet having a thickness of 2 mm. The total thickness (height) of the two solar cell panel bodies 2 and the partition plate 19 is about 75 to 80 mm.
The outer box cardboard 17 is formed of a cardboard sheet having a thickness of 2 mm. The outer box cardboard 17 has a substantially rectangular bottom surface portion (bottom portion) 25 and a pair of rectangular short side bent portions provided so as to protrude outward from the short side portion of the bottom surface portion 25 ( A pair of rectangular long side bent portions (long side portion side bent portions) provided so as to protrude outward from the long side portion of the bottom surface portion 25. 29).

  In addition, by using corrugated cardboard for the outer box corrugated cardboard 17 and the partition plate 19 which are packing members, there is an effect of suppressing damage from the wound means to the solar cell panel body 2 due to its buffer characteristics. In addition, it can be used as an effective curing sheet when the package is unpacked outdoors. Further, when the solar cell panel body 2 is discarded after being transported, it can be recycled.

The bottom surface portion 25 is sized to cover the entire surface of the aluminum frame 15 on the glass surface (surface on which the terminal box 9 does not exist) side.
A first fold 31 is processed at the boundary between the short side bent portion 27 and the long side bent portion 29 and the bottom surface portion 25.
The projecting lengths of the short side bent portion 27 and the long side bent portion 29 are a pair of objects to be packaged (two solar cell panel bodies 2) at the height of the two solar cell panel bodies 2 and the partition plate. The total length is about 100 mm which is engaged with the upper surface of the plate.
A second fold 33 is processed at the boundary between the side surface surrounding portion and the upper surface surrounding portion in the short side bent portion 27 and the long side bent portion 29.

  The bubble cushioning material 21 is a material in which air is confined in a cylindrical protrusion formed by molding a transparent or translucent sheet and has a function of a cushioning material by its air pressure (for example, trade name: air cap, etc.), aluminum The size is such that it covers the glass surface of the solar cell panel 3 located in the inner part of the frame 15. The bubble cushioning material 21 can suppress the dirt and damage of the solar cell panel 3.

Here, the bubble cushioning material 21 is directed so that the side with the projection containing the cylindrical air is directed to the glass surface side of the solar cell panel 3 and the flat side of the opposite surface is the outside (in this embodiment, the upper side). It is preferable to point. Thereby, the surface of the bubble cushioning material 21 arranged on the upper surface of the packing structure 1 becomes a flat surface, and there is no possibility that rainwater and dust remain during the carrying work to cause inconvenience.
Further, the peripheral edge portion of the bubble cushioning material 21 is covered with a short side bent portion 27 and a long side bent portion 29. Thereby, since the possibility that the bubble cushioning material 21 falls off can be suppressed, it is possible to always protect the upper surfaces of the pair of objects to be packaged (two solar cell panel bodies 2) from being damaged.

  The band 23 may be made of polypropylene that is excellent in tensile strength, impact resistance, and wear resistance, and that is suitable for packaging that does not absorb water and does not change strength even when wet. The reason why the band 23 is made of polypropylene is that the band 23 only needs to be strong enough to hold the two solar cell panel bodies 2, so that the band 23 is manually tightened and is cheaper than, for example, a polyester band.

Hereinafter, a procedure for forming the packing structure 1 will be described.
As shown in FIG. 3, for example, the outer box cardboard 17 is installed on a horizontal floor surface. Next, as shown in FIG. 4, the first solar cell panel body 2 is installed in accordance with the folds 31 of the outer box cardboard 17 with the glass surface facing down (terminal box 9 facing up). At this time, the cable of the terminal box 9 of the solar cell panel body 2 is secured in a loop shape when the terminal box 9 is attached, and the same end of the cable end is temporarily connected to each other at the time of packing. Even if light hits and generates an electromotive force, it is in a safe situation so that it does not leak at the end of the cable.
As shown in FIG. 5, the partition plate 19 is placed on the aluminum frame 15 of the solar cell panel body 2.

Next, as shown in FIG. 6, the second solar cell panel body 2 is divided so that the position of the aluminum frame 15 is aligned so that the glass surface is on the upper side (terminal box 9 is on the lower side). 19 is placed on.
At this time, the same end of the cable end of the terminal box 9 of the second solar cell panel body 2 is temporarily connected. The first solar cell panel is arranged so that the horizontal position of the terminal box 9 of the second solar cell panel 2 is not close to the terminal box 9 of the lower first solar cell panel 2. The terminal box 9 of the body 2 is opposite to the position opposite to the horizontal position. In other words, both terminal boxes 9 are lines extending in the vertical direction passing through the intersection (plane center) of the line connecting the middle positions of the long sides of the bottom surface 25 and the line connecting the middle positions of the short sides. It is located at a line-symmetrical position. For this reason, the terminal box 9 of the second solar cell panel body 2 and the terminal box 9 of the first solar cell panel body 2 contact or interfere with each other, or a cable or This is preferable because the tip end portion of the cable is not pinched and causes damage.

In this state, as shown in FIG. 7, the bubble cushioning material 21 is placed on the glass substrate 5 so as to be positioned inside the aluminum frame 15 of the second solar cell panel body 2.
Next, the short side bent portion 27 is folded upward along the first fold line 31 to cover the short side surface of the two solar cell panel bodies 2. Thereafter, the short side bent portion 27 is folded inward along the second fold 33 so as to cover the peripheral edge portion of the upper surface of the solar cell panel body 2 (see FIG. 8).
Following the short side bent portion 27, a long side bent portion 29 is folded upward along the first fold line 31 as shown in FIG. Thereafter, the long side bent portion 29 is folded inward along the second fold 33 so as to cover the peripheral edge portion of the upper surface of the solar cell panel body 2.

In this way, the short side bent portion 27 and the long side bent portion 29 of the outer box corrugated cardboard 17 are provided with the folds 31 and 33 at the folding portion, so that two solar cell panel bodies 2 are placed. Later, it is possible to easily fold it into an accurate size.
As shown in FIG. 9, there is an overlapping portion 35 in which the short side bent portion 27 and the long side bent portion 29 overlap each other at the corners of the four corners by folding the short side bent portion 27 and the long side bent portion 29. It is formed. The overlapping portion 35 is a square having a side of 50 mm to 200 mm, and more preferably a square of about 100 mm as will be described later.

  After folding the short side bent portion 27 and the long side bent portion 29 of the outer box cardboard 17, as shown in FIG. 9, two or more places between the overlapping portions 35 are secured on each side by the band 23. Thereby, in the operation of folding the short side bent portion 27 and the long side bent portion 29 of the outer box corrugated cardboard 17, the slit work and the flap portion are provided in a part of the cardboard, and the complicated work of inserting and fixing the flap portion is performed. Can be omitted.

In this case, it is preferable to print an appropriate fixing position of the band 23 on the outer cardboard 17. In this way, the band can be tightened and secured in an optimum position without individual differences among workers, and quality during transportation can be easily ensured.
When the overlapping portion 35 is fastened with the band 23, the long side bent portion 29 has a space corresponding to the thickness of the packing member between the solar cell panel member and the lower side bent portion 29 at the fastening position. To do. Along with this movement, the long side bent portion 29 located at the overlapping portion 35 is pulled by a small amount so that the bent portion of the packing member is stepped downward.

Since the overlapping portion 35 is formed such that the long side bent portion 29 is on the upper side, the interval between the overlapping portion 35 and the band fastening portion can be increased (that is, at a long distance interval).
Therefore, the level | step difference which the long side bending part 29 of the packaging member located in the duplication part 35 produces in a downward direction becomes smooth, and it has an influence on a deformation | transformation of a packing member in the long side bending part 29 located in an duplication part. Therefore, the overlapping portion 35 can be formed correctly and accurately.
By forming the overlapping portion 35 accurately and uniformly, it is possible to obtain an effect that is effective for stably stacking the packing structure 1 without inclining at the time of loading described later.

In this way, the packing structure 1 in which the two solar cell panel bodies 2 are packed is formed.
As shown in FIG. 1, a seal 37 on which a QR code, a barcode, an ID number, and the like are printed may be attached to a predetermined position on the side surface of the packing structure 1.
In this way, even when the packaging structures 1 are stacked, the ID numbers and the like of the solar cell panel bodies 2 housed in the respective packaging structures 1 can be confirmed when viewed from the outside. Since the required solar cell panel body 2 can be selected and used from the panel characteristics of a solar cell, etc., it is preferable.
The affixed sticker 37 with a QR code, for example, can be replaced with a warranty card for a delivery destination. This makes it easier to implement traceability management using guarantees.

In this packing structure 1, since at least four side surfaces and the lower surface of the two solar cell panel bodies 2 are covered with the outer corrugated cardboard 17, even the large-sized solar cell panel body 2 is sufficiently protected. be able to.
Since the upper surface of the solar cell panel 2 (the glass surface of the solar cell panel 3) is only covered with the outer peripheral cardboard 17, the outer cardboard 17 can be made cheaper accordingly. Further, since the bubble cushioning material 21 is transparent or translucent, it can be observed that the glass substrate 5 is present inside. If the contents can be observed, the contents of the packaging can be understood as the solar cell panel 3, so that it is possible to encourage careful handling during transportation, and the solar cell panel 3 can be prevented from being damaged, and an unnecessarily strong packaging is unnecessary. effective.

Since the partition plate 19 exists between the two solar cell panel bodies 2, even if the cable extending from the terminal box 9 is not fixed, the end portion of the cable may contact the lower solar cell panel 2 and be injured. There is no need to carry out special cable fixing work. Since the cable fixing operation can be omitted and the outer corrugated cardboard 17 is simply bent, the packaging work time can be reduced.
Since the overlapping portion 35 formed at the four corners is formed by overlapping the short side bent portion 27 and the long side bent portion 29, the strength is high. Thereby, even if the packing structure 1 is stacked, the packing structure 1 is supported by the high-strength overlapping portion 35, so that the packing structures 1 can be stacked without being inclined.

Thus, in order to stack the packing structure 1 stably without inclining, it is desirable that there are overlapping portions 35 that support the load evenly at almost equal areas at the four corners of the packing structure 1. As a result of trial and error regarding the size of the overlapping portion 35, it was found that a square or rectangular shape with one side of 50 mm to 200 mm is desirable, and more preferably a square or rectangular shape with one side being 100 mm ± 20 mm. If one side of the overlapping portion 35 is smaller than 50 mm, the two solar cell panel bodies 2 (two pieces are approximately 50 kg) are crushed and the effect of the overlapping portion 35 cannot be exhibited, while if one side is larger than 200 mm Due to the variation in shape, the load cannot be supported uniformly, and the packaging structure 1 may be inclined when stacked.
For this reason, it turns out that it is an effective method with very simple management to form the overlapping part 35 of a dimension in the corner part of the four corners of the packing structure 1 like this embodiment in exact and uniform shape. did.

When the packing structure 1 is unpacked at the installation site, the unpacking work is often performed outdoors or on the roof, so that the glass surface of the solar panel 3 is damaged by the unpacking work with the glass surface down. There is a fear. In the case of the present embodiment, the bottom surface portion 25 of the outer corrugated cardboard 17 covers the entire glass surface of the first solar cell panel 3, so that the solar cell panel body 2 is temporarily placed using the outer corrugated cardboard 17 as a curing material. This is preferable because it can be utilized for the purpose of preventing damage to the solar cell panel 3.
In addition, when unpacking, the removed partition plate 21 is suitable because it can be used, for example, as a temporary curing material for the second solar cell panel body 2.
Thereby, since it is not necessary to prepare a curing material separately, the work in an installation place becomes easy.

Next, the structure and formation procedure of the laminated packaging structure 41 used when transporting a plurality of packaging structures 1 will be described with reference to FIGS.
As shown in FIG. 10, a plurality of, for example, twelve packing structures 1 are sequentially stacked on a wooden pallet (pallet) 43 to form a laminated body 45.
As the wooden pallet 43, a known pallet having a fork insertion port into which a fork of a forklift can be inserted is used.

At this time, since the overlapping portion 35 where the short side bent portion 27 and the long side bent portion 29 overlap is present on the upper surface of the packing structure 1, the overlapping portion 35 effectively suppresses the inclination of the stacked body 45. it can.
Moreover, since the bottom surface portion 25 of the upper packaging structure 1 serves as a protective material for the upper surface of the lower packaging structure 1 when the packaging structure 1 is loaded, the solar cell panel body 2 can be used without using an extra buffer member. Damage to the battery panel body 2 can be suppressed.
However, only the uppermost packing structure 1 has a structure in which only the bubble cushioning material 21 is installed on the upper surface side of the packing structure 1. However, since the upper surface side of the vinyl cover 55 which will be described later is folded and folded and fixed with an adhesive tape or the like, the upper surface side is substantially also in the uppermost solar cell panel body 2 of the uppermost packaging structure 1. The solar cell panel 3 is sufficiently protected to suppress damage.

An L-shaped corrugated cardboard sheet 47 is attached to the corners on the four sides of the upper surface of the uppermost packaging structure 1 and reinforced. The portion of the cardboard sheet 47 is fastened to the wooden pallet 43 by a band 49 at a plurality of locations, and the whole is fixed.
The band 49 is made of polyester suitable for packaging that has excellent tensile strength, impact resistance, and wear resistance, and does not absorb water, so that the strength does not change even when wet. The use of polyester is disadvantageous in terms of tightening workability and cost compared to polypropylene, but the band 49 needs to be strong enough to hold a plurality of solar cell panel bodies 2, so that stress relaxation is achieved. This is because it is small and can maintain tension for a long time and is suitable for long-term transportation.

Next, after pasting a display sheet 51 indicating a destination or the like on the side surface of the laminate 45, a transparent stretch film (film) 53 is wound around the laminate 45, for example, twice, and the laminate 45 is tightened. .
In this way, since the plurality of packaging structures 1 constituting the laminated body 45 are integrated, even if an impact load is applied to the laminated body 45 due to some rough handling during transportation and loading operations, Load collapse can be reliably prevented.

Next, as shown in FIG. 11, a vinyl cover 55 is installed around and above the outer side of the stretch film 53. In this embodiment, the cover 55 is wound around and fixed in a cylindrical shape with an adhesive tape or the like, and the upper part is folded and folded. A cylindrical cover 55 that has been bent in advance at the top may be inserted from above, and is not particularly specified. When the cover 55 is installed at a predetermined position, the lower part is tightened by a band 57 made of polypropylene to suppress the flapping of the cover 55.
Then, as shown in FIG. 12, the upper portion of the laminated body 45 is sealed by folding and folding the upper portion of the cover 55 and fixing it with an adhesive tape or the like.
If it does in this way, since the cover 55 will cover the part which is not covered with the outer side cardboard 17 in the uppermost packaging structure 1, for example, moisture will enter the packaging structure 1 due to rain during transportation or temporary storage. Can prevent adverse effects.

By the way, in this embodiment, since the partition plate 19 is a flat plate material, the installation position may not be specified strictly. For example, when placing the second solar cell panel body 2, if the second solar cell panel body 2 is installed with the partition plate 19 left in an inappropriate position, the solar cell panel body 2 is heavy. It is not easy to adjust the position of the partition plate 19 again.
In order to install the partition plate 19 at a correct position, for example, as shown in FIGS. 13 to 15, an engagement portion 59 that engages the aluminum frame 15 may be provided on the partition plate 19.

As shown in FIG. 14, the engaging portion 59 is formed using a notch 61 provided in a corner portion of the partition plate 19. The notches 61 are cut at both end portions of the short side portion of the partition plate 19 substantially parallel to the long side portion. A first fold 63 is machined from the inner end of the cut 61 to the outside of the partition plate 19 along the short side direction at an angle of 45 ° toward the long side. A second fold 65 substantially parallel to the short side is processed from the intersection of the first fold 63 and the long side toward the cut 61.
When the portion separated by the notch 61 is folded along the first fold 63, a projecting portion substantially perpendicular to the long side portion is formed, and the projecting portion is folded downward along the second fold 65. Then, as shown in FIG. 15, an engaging portion 59 that hangs down along the long side portion of the partition plate 19 is formed.

FIG. 13 shows a state where the engaging portions 59 are formed at both ends of one long side portion and a state before the engaging portions 59 are formed at both ends of the other long side portion.
When the engaging portion 59 is hooked on the aluminum frame 15 of the first panel (the lower arrangement of the packing structure 1), the position of the long side portion of the partition plate 19 is correctly positioned with respect to the aluminum frame 15 Be made. After that, the position of the short side may be set.
In the engaging portion 59 shown in FIG. 13, the long side portion of the partition plate 19 can be positioned, but the notch 61, the first fold 63 and the second fold 65 are as shown in FIG. When processed, an engaging portion 59 that defines the position of the long side portion at one opposing corner portion and an engaging portion 59 that defines the position of the short side portion at the other opposing corner portion are formed.
In this way, since the position of the partition plate 19 is defined for both the short side portion and the long side portion, the position fixing of the partition plate 19 becomes more effective.

In addition, a gap is generated between the short side bent portion 27 and the long side bent portion 29 at the side corner portion of the packing structure 1 depending on the accuracy of the fold line 31 and the manner in which the solar cell panel body 2 is placed. However, the corners of the aluminum frame 15 may be exposed. Since the exposed portion is on the inner side of the outer corrugated cardboard 17, the aluminum frame 15 is not damaged in normal transportation, but it is not preferable in appearance.
For example, when there is a possibility that scratches may occur during long-distance transportation or the like, as shown in FIG. A flap (protrusion) 67 configured to increase the protrusion amount toward the surface may be formed.

When the short side bent portion 27 is folded, the flap 67 is in a state of protruding to the long side. In this state, when the long side bent portion 29 is folded, the flap 67 is placed inside the long side bent portion 29.
In this way, even if a gap is generated between the adjacent short-side bent portion 27 and the long-side bent portion 29, the flap 67 covers the gap, so that the internal aluminum frame 15 can be prevented from being exposed.
If the flap 67 is large, it interferes with the bending of the long side bent portion 29, and in particular, accurate folding cannot be performed at the fold 31. Therefore, the flap 67 has a substantially triangular shape and is located near the fold 31. There is no flap 67, and the flap 67 is present at the upper part of the side surface where gaps are likely to occur.

Further, when the stacked packaging structure 41 is transported for a long distance, as shown in FIG. 18, the entire top surface of the uppermost packaging structure 1 is made of a plywood or a panel material covering the entire uppermost upper surface. A member (rigid member) 69 may be provided.
If it does in this way, to-be-packaged goods can be reliably protected with respect to a fallen thing etc. also during the medium-to-long term transportation. Further, it is not necessary to attach and reinforce the L-shaped corrugated cardboard sheet 47 at the corners on the four sides of the upper surface of the uppermost packaging structure 1, which is preferable because workability is improved.

  The present invention is not limited to the embodiment described above, and various modifications may be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Packing structure 2 Solar cell panel 3 Solar cell panel 8 Back sheet 9 Terminal box 15 Aluminum frame frame 17 Outer corrugated cardboard 19 Partition plate 21 Bubble cushioning material 23 Band 25 Bottom part 27 Short side bend part 29 Long side bend part 35 Overlap portion 41 Laminated packing structure 43 Wooden pallet 45 Laminated body 49 Band 53 Stretch film 55 Cover 59 Engaging portion 67 Flap 69 Top plate member

Claims (9)

A pair of objects to be wrapped in which four sides of a rectangular solar cell panel each having a terminal portion on one surface are held by a frame, the one surface faces each other, and the planar positional relationship of the terminal portion is relative to the surface center of the one surface It is a packing structure that stacks and packs so as to have a point symmetry relationship,
A packing member having a rectangular shape and having a bottom portion on which the article to be packaged is placed, and a rectangular bent portion provided so as to protrude outward on the four sides of the bottom portion;
A substantially rectangular buffer member interposed between the pair of packages;
An elastic member placed on the upper part of the packaged article so as to cover the solar cell panel in a range smaller than the frame;
The bent portions are bent so as to cover the side surfaces and the peripheral edge portions of the upper surface of the pair of objects to be packaged, and the bent portions on the short side and the long side on the four corners of the upper surface. Overlapping part is formed, and
A packaging structure characterized in that the overlapping portions are fastened by a plurality of bands.   2. The overlapping portion is formed so that the bent portion on the long side portion side is on the upper side with respect to the upper surface than the bent portion on the short side portion side. Packing structure as described in.   The packing structure according to claim 1, wherein a peripheral region of the elastic member is configured to be covered with the bent portion.   The packaging according to any one of claims 1 to 3, wherein an engagement portion that engages with a side of the article to be packaged is provided at at least one of the peripheral portions of the buffer member. Construction.   The bent portion located below the upper surface in the overlapping portion is configured such that a protruding amount increases outward from the bottom to a portion forming a side surface, and is bent with respect to the side surface. The packaging structure according to any one of claims 1 to 4, wherein a projecting portion capable of being formed is formed. A plurality of the packing structures according to any one of claims 1 to 5 are supported on a pallet as a laminate in which the packing structures are stacked in a vertical direction in a horizontal state,
A stacked packing structure, wherein a plurality of the packing structures and the pallet are integrally fastened by a plurality of bands.   The stacked packaging structure according to claim 6, wherein the periphery of the side surface of the stacked body is wound with a transparent or translucent film.   The stacked packaging structure according to claim 6 or 7, wherein at least an upper surface of the stacked body is covered with a transparent or translucent cover. The stacked packaging structure according to any one of claims 6 to 8, wherein an upper surface portion of the stacked body is covered with a rigid member.

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