A packaging corner for a steel-edged photovoltaic module product

Abstract

The present application relates to a kind of packing corner for steel frame photovoltaic module product, the packing corner includes integrated fold surface one, fold surface two and fold surface three, by the tooth cutter line one and tooth cutter line two that are set, three fold surface is folded inwards to form the packing corner of acute angle included angle, corner also includes elastic puller and side wall fastening mechanism, elastic puller is set between fold surface one and fold surface three, side wall fastening mechanism includes arc paperboard, outer paperboard and side fixed paperboard, by the arc paperboard that elastic puller pulls, increase the camber and adhere to the recess surface of steel frame, outer paperboard increases friction force by resisting recess surface, side fixed paperboard is extruded and deformed by arc paperboard and is filled between arc paperboard and recess, further fastening.Elastic puller forms the protection piece to the corner of packing corner after installation, simultaneously, its pulling effect can keep the state of arc paperboard, outer paperboard and side fixed paperboard, further improve the fastening effect of packing corner on steel frame.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module packaging technology, specifically to a corner protector for packaging photovoltaic module products with steel frames. Background Technology

[0002] Steel-framed photovoltaic (PV) modules are a type of photovoltaic product encapsulated from materials such as steel frames, solar cells, glass, and backsheets. The steel frame, as a crucial component, primarily serves to enhance the module's strength, protect the PV modules, and facilitate transportation and installation. Steel frames possess high load-bearing capacity and corrosion resistance, enabling them to meet the needs of large or extra-large modules, making them a widely used module structure in the photovoltaic industry.

[0003] Steel frame corner protectors are specially designed packaging protective components for steel frame photovoltaic modules. They are typically made of cardboard or similar materials, featuring multiple integrally molded folds. A specific toothed crease design allows them to fold into acute angles to accommodate the right-angled structure of the steel frame. Through elastic pull tabs and side-wall fastening mechanisms, the corner protectors fit snugly against the steel frame, effectively preventing damage caused by collisions or friction during transportation and handling, thus protecting the photovoltaic modules and improving transport safety.

[0004] Currently, the corner protectors for the steel frame of photovoltaic modules have the following drawbacks when in use. For example, in order to improve the protection effect, plastic corner protectors are used, but plastic corner protectors are expensive and not environmentally friendly. If paper corner protectors are chosen to save costs, the protection effect is generally poor, especially at the corners, which are points of abrupt change in geometric shape. When subjected to external impact, stress is easily concentrated at these points, leading to material fatigue or cracking, which in turn damages the corner protectors and causes them to lose their protective effect.

[0005] Therefore, we propose a packaging corner protector for steel-framed photovoltaic module products. Summary of the Invention

[0006] The purpose of this invention is to provide a packaging corner protector for steel-framed photovoltaic module products to overcome the aforementioned shortcomings of the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a packaging corner protector for steel frame photovoltaic module products, comprising an integrally formed folded surface one, folded surface two, and folded surface three, wherein a toothed line two is provided between folded surface two and folded surface three, and a toothed line one is provided between folded surface one and folded surface two, wherein the included angle between the toothed line one and the toothed line two is an acute angle, and the folded surface one, folded surface two, and folded surface three are folded inward through the toothed line one and the toothed line two to form a packaging corner protector, and the included angle between folded surface one and folded surface three of the formed packaging corner protector is an acute angle;

[0008] The packaging corner protector used for steel frame photovoltaic module products also includes an elastic pull member disposed between fold one and fold three, and a side wall fastening mechanism disposed on the elastic pull member. When the packaging corner protector is installed on the steel frame, the side wall fastening mechanism is made to fit against the groove surface of the steel frame through the elastic pull member, and the elastic pull member itself forms a protective part for the corner of the packaging corner protector.

[0009] As a further description of the above technical solution: the side wall fastening mechanism includes an arc-shaped cardboard disposed on the folded surface three. The width of the arc-shaped cardboard is smaller than the width of the folded surface three, and one end is connected to an elastic pull member. When the packaging corner protector is installed on the steel frame, the elastic pull member pulls the arc-shaped cardboard to increase the curvature of the arc-shaped cardboard.

[0010] As a further description of the above technical solution: the curved cardboard is also provided with an outward-flowing cardboard, and after the packaging corner protectors are installed on the steel frame, the end of the outward-flowing cardboard abuts against the groove surface of the steel frame.

[0011] As a further description of the above technical solution: the folded surface three is also provided with a side fixing cardboard, and the side fixing cardboard is inclined, with the inclined end of the side fixing cardboard overlapping the protruding position of the arc-shaped cardboard.

[0012] As a further description of the above technical solution: the hardness of the curved cardboard material is greater than the hardness of the side-fixed cardboard material.

[0013] As a further description of the above technical solution: the end of the elastic pull member away from the curved cardboard is provided with a dovetail protrusion that fits into the dovetail snap-fit ​​groove, and the dovetail snap-fit ​​groove is provided on the first folded surface.

[0014] As a further description of the above technical solution: the first fold surface is provided with a mutually cooperating slot. When the two fold surfaces are brought close to each other by the first toothed line and the second toothed line, the slot is used to lock the two fold surfaces together and fix them in place.

[0015] As a further description of the above technical solution: after the packaging corner protectors formed by the first fold, the second fold, and the third fold are installed on the steel frame, the arc-shaped cardboard abuts against the groove surface of the steel frame.

[0016] As a further description of the above technical solution: the folded surface three has a raised position on the side near the curved cardboard, and the raised position is used to make the initial state of the curved cardboard curved.

[0017] The sum of the width of the curved cardboard and the width of the side-fixed cardboard is greater than the width of the folded surface and the groove.

[0018] In the above technical solution, the packaging corner protector for steel-framed photovoltaic module products provided by the present invention has the following beneficial effects:

[0019] High adaptability and natural fixation: The packaging corner protectors of this invention, through the designed folded surfaces one, two, and three, as well as the toothed lines, can easily fold into an acute angle, perfectly adapting to the right-angled structure of the steel frame. Under pressure, the corner protectors can be naturally fixed to the corner of the steel frame without the need for additional fixing devices, improving the convenience of installation.

[0020] Multiple fastening mechanisms: The corner protectors incorporate multiple designs including elastic pull tabs, curved cardboard, outward-flaring cardboard, and side-fixing cardboard, effectively increasing the contact area and friction with the steel frame. The curved cardboard, pulled by the elastic pull tabs, adheres more deeply to the grooved surface of the steel frame, while the outward-flaring and side-fixing cardboard further enhance the fastening effect, preventing the corner protectors from falling off during handling.

[0021] Corner Protection and Structural Stability: After installation, the elastic tension member not only acts as a tensioning element but also forms a protective component for the corners of the packaging, effectively preventing overall structural failure due to corner damage during transportation. Simultaneously, its tensioning action maintains the shape of the curved cardboard, the outward-flaring cardboard, and the side-fixed cardboard, enhancing the overall structural stability of the corner protector. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the packaging corner protectors in an folded state provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the folded corner protectors and steel frame provided in an embodiment of the present invention;

[0025] Figure 3 This is a structural schematic diagram of the corner protector side view provided in an embodiment of the present invention;

[0026] Figure 4 This is a structural schematic diagram of the front view cross-section of the corner protector provided in an embodiment of the present invention;

[0027] Figure 5 Provided for embodiments of the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Fold surface one; 2. Toothed line one; 3. Toothed line two; 4. Slot; 5. Fold surface two; 6. Fold surface three; 7. Elastic pull piece; 71. Dovetail protrusion; 72. Dovetail snap-fit ​​groove; 8. Side fixing cardboard; 81. Curved cardboard; 82. Outward-flaring cardboard; 9. Steel frame; 10. Groove. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Please see Figures 1-5 This invention provides a technical solution: a corner protector for packaging of steel-framed photovoltaic modules, comprising an integrally formed folded surface 1, folded surface 5, and folded surface 3 6. A toothed line 2 3 is provided between folded surface 2 5 and folded surface 3 6, and a toothed line 2 is provided between folded surface 1 and folded surface 2 5. The angle between toothed line 2 3 and toothed line 2 3 is an acute angle. Folded surface 1, folded surface 2 5, and folded surface 3 6 inwards through toothed line 2 2 and toothed line 2 3 to form the corner protector. A matching groove 4 is provided on folded surface 1. When the two folded surfaces 1 are brought closer together through toothed line 2 2 and toothed line 2 3, the groove 4 engages and fixes the two folded surfaces 1 together. Thus, when the two folded surfaces 1 are fixed together, the entire folded surface 1, folded surface 2 5, and folded surface 3 6 form a package for protecting the corners of the steel frame 9. The corner protector has an acute angle between fold 1 and fold 3 6. When the corner protector is placed on the corner of the steel frame 9, since the corner of the steel frame 9 is a right angle but the corner protector is an acute angle, the corner of the steel frame 9 will compress the corner protector. Under pressure, the corner protector will gradually change from an acute angle to a right angle. Fold 1, fold 2 5, and fold 3 6 are made of cardboard and have a certain degree of elasticity. After being forcibly deformed into a right angle by the steel frame 9, it will want to return to its original acute angle state. Since the corner protector is attached to the steel frame 9 at this time, this force that wants to return to the original acute angle state will compress the steel frame 9 and generate friction, thereby pressing the corner protector tightly against the steel frame 9. This allows the corner protector to be naturally fixed to the corner of the steel frame 9, initially preventing the corner protector from falling off when the photovoltaic module of the steel frame 9 is being transported.

[0032] It should be noted here that you should refer to Figure 2 The steel frame 9 has a groove 10. After the packaging corner protector is installed on the corner of the steel frame 9, the packaging corner protector directly abuts against the outer edge of the steel frame 9 due to the presence of the groove 10, and there is a gap between the groove 10 and the packaging corner protector.

[0033] To further prevent the packaging corner protectors from detaching from the steel frame 9, the packaging corner protectors used for photovoltaic module products with the steel frame 9 also include an elastic pull member 7 disposed between fold facet 1 and fold facet 3 6, and a side wall fastening mechanism disposed on the elastic pull member 7. When the packaging corner protector is installed onto the steel frame 9, the elastic pull member 7 causes the side wall fastening mechanism to fit against the surface of the groove 10 of the steel frame 9. At the same time, the elastic pull member 7 itself forms a protective element for the corner of the packaging corner protector. This elastic pull member 7 is disposed between fold facet 1 and fold facet 3 6. When the packaging corner protector is installed, the included angle between fold facet 1 and fold facet 3 6 is forced to become a right angle, causing the entire packaging corner protector to deform. In this way, fold 1 and fold 3 will move away from each other, thereby pulling the elastic pull member 7 and causing the side wall fastening mechanism to fit against the surface of the groove 10 of the steel frame 9. This side wall fastening mechanism further increases the tightness of the packaging corner protector installation. After the installation is complete, the elastic pull member 7 is located at the corner of the packaging corner protector and abuts against the corner of the steel frame 9. This can prevent the corner of the paper packaging corner protector from being easily damaged and causing damage to the corner of the steel frame 9. The elastic pull member 7 can be used as a pulling member to pull the side wall fastening mechanism during installation, and it can also be used as a protective member to protect the corner of the steel frame 9 after installation. It has multiple beneficial effects.

[0034] In one embodiment of the present invention, the sidewall fastening mechanism includes an arc-shaped cardboard 81 disposed on the folded surface 6. The width of the arc-shaped cardboard 81 is smaller than the width of the folded surface 6, and one end is connected to an elastic pull member 7. When installing the packaging corner protector, the elastic pull member 7 pulls one end of the arc-shaped cardboard 81, while one end of the arc-shaped cardboard 81 is fixed to the folded surface 6, and the other end connected to the elastic pull member 7 is slidably disposed on the folded surface 6. Thus, when the arc-shaped cardboard 81 is pulled by the elastic pull member 7, the mechanism provides a secure fastening mechanism. After one end of the board 81 is removed, the curvature of the curved cardboard 81 will increase, allowing the curved cardboard 81 to penetrate deeper into the groove 10 on the steel frame 9. This allows the packaging corner protector formed by fold 1, fold 2, and fold 3 to be installed on the steel frame 9. At this time, the curvature of the curved cardboard 81 increases and it contacts the surface of the groove 10 on the steel frame 9. This allows the curved cardboard 81 to buffer the space between the steel frame 9 and the packaging corner protector.

[0035] An outward-flaring cardboard 82 is also provided on the curved cardboard 81. After the packaging corner protector is installed on the steel frame 9, the end of the outward-flaring cardboard 82 abuts against the surface of the groove 10 of the steel frame 9. When the curved cardboard 81 is pulled deeper into the groove 10, the outward-flaring cardboard 82 will also enter the groove 10 and abut against the surface of the groove 10. This further fixes the packaging corner protector through the friction between the outward-flaring cardboard 82 and the surface of the groove 10 of the steel frame 9. It should be noted that when the curved cardboard 81 is not pulled, the installation position of the outward-flaring cardboard 82 is on the outer surface of the end of the curved cardboard 81 near the fold face 6. This position minimizes friction during installation as the corner protector is inserted into the steel frame 9. Only when the corner of the steel frame 9 is about to be inserted into the corner protector is the curved cardboard 81 pulled by the elastic puller 7 to allow the outward-flaring cardboard 82 to enter the groove 10. As the curvature of the curved cardboard 81 increases, the outward-flaring cardboard 82 gradually tilts and abuts against the surface of the groove 10 until the corner protector is completely installed on the steel frame 9. At this point, the outward-flaring cardboard 82 is completely against the surface of the groove 10. Then, the friction force further secures the corner protector to the steel frame 9, preventing it from falling off.

[0036] When the curvature of the curved cardboard 81 increases, a side fixing cardboard 8 is also provided on the fold face 3 6. The side fixing cardboard 8 is inclined, and the inclined end of the side fixing cardboard 8 overlaps the protruding position of the curved cardboard 81. In this way, as the curvature of the curved cardboard 81 increases, it will also abut against the side fixing cardboard 8, so that the inclined side fixing cardboard 8 gradually returns to a position perpendicular to the fold face 3 6. After the fold face 3 6 returns to a state perpendicular to the fold face 3 6, since the sum of the width of the curved cardboard 81 and the width of the side fixing cardboard 8 is greater than the width of the fold face 3 6 and the groove 10, when the curved cardboard 81 squeezes the side fixing cardboard 8 to make the side fixing cardboard 8 become perpendicular to the fold face 3 6, the side fixing cardboard 8 will be squeezed and deformed, and will be located between the curved cardboard 81 and the groove 10 of the steel frame 9. Thus, the friction between the side fixing cardboard 8 and the groove 10 of the steel frame 9 further secures the packaging corner protector and prevents it from falling off during handling.

[0037] In order to prevent the material of the curved cardboard 81 from deforming when it comes into contact with the side fixing cardboard 8, so that the side fixing cardboard 8 will not deform, the hardness of the material of the curved cardboard 81 is greater than that of the material of the side fixing cardboard 8.

[0038] It should also be noted that after the packaging corner protector is fully installed on the steel frame 9, that is, after the corner of the steel frame 9 is fully abutting against the corner of the packaging corner protector, since the elastic pull member 7 is between fold 1 and fold 3 6, the elastic pull member 7 will also be squeezed by the corner of the steel frame 9 and adhere to fold 1 and fold 3 6, and pass through the corner of fold 1, fold 2 5 and fold 3 6, that is, through the corner of the packaging corner protector. At this time, the corner of the steel frame 9 abuts against the corner of the packaging corner protector through the abutting elastic pull member 2. In this way, there is a layer of elastic pull member 7 between the corner of the packaging corner protector and the corner of the steel frame 9. When the corner of the packaging corner protector is damaged, the elastic pull member 7 can also protect the corner of the steel frame 9 and prevent the corner of the steel frame 9 from being damaged. At this time, the elastic pull member 7 is in a fixed state by the steel frame 9. That is, at this time, whether it is the curved cardboard 81 or the outward-flaring cardboard 82, the elastic pull member 7 is in a fixed state. Both the side-fixed cardboard 8 and the side-fixed cardboard 8 are under tension to maintain their functions. The elastic pull member 7 can not only act as a pull member, but also as a protective member for the corners of the steel frame 9. Finally, after installation, it can maintain the state of the curved cardboard 81, the outward-flaring cardboard 82 and the side-fixed cardboard 8. At this time, the elastic pull member 7 is still in a state of deformation under tension (the steel frame 9 squeezes the elastic pull member 7). Through this elastic force, the first fold and the third fold 6 are further pulled, and the first fold and the third fold 6 are further adhered to the outer surface of the steel frame 9, increasing the positive pressure, thereby increasing the friction, and further improving the fastening effect of the packaging corner protector installed on the steel frame 9. The elastic pull member 7 has multiple functions and has a better performance. The elastic pull member 7 can be an elastic band or a cardboard with elasticity, which is existing technology and will not be described in detail here.

[0039] When installing the elastic pull member 7, the end of the elastic pull member 7 away from the curved cardboard 81 is provided with a dovetail protrusion 71 that fits into the dovetail snap-fit ​​groove 72. The dovetail snap-fit ​​groove 72 is provided on the first fold face 1. After folding the first fold face 1, the second fold face 5 and the third fold face 6 by the toothed knife line 2 and the toothed knife line 3, the dovetail protrusion 71 is inserted into the dovetail snap-fit ​​groove 72, and the installation of the elastic pull member 7 can be realized. The installation method is relatively convenient.

[0040] A raised position is provided on the side of the folded surface 6 near the curved cardboard 81. The raised position is used to make the initial state of the curved cardboard 81 curved. The raised position is set to prevent the curved cardboard 81 from being in a straight state and thus unable to be stretched into a curved shape.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A packaging corner protector for a steel framed photovoltaic module product comprising an integrally formed fold one (1), fold two (5) and fold three (6), wherein, The tooth cutter line two (3) is arranged between the fold surface two (5) and the fold surface three (6), and the tooth cutter line one (2) is arranged between the fold surface one (1) and the fold surface two (5), characterized in that the included angle between the tooth cutter line one (2) and the tooth cutter line two (3) is an acute angle, the fold surface one (1), the fold surface two (5) and the fold surface three (6) are folded inward to form a packaging corner protector through the tooth cutter line one (2) and the tooth cutter line two (3), and the included angle of the fold surface one (1) and the fold surface three (6) of the formed packaging corner protector is an acute angle. The packaging corner protector for the steel frame (9) photovoltaic module product further comprises an elastic pulling piece (7) arranged between the fold surface one (1) and the fold surface three (6), and a side wall fastening mechanism arranged on the elastic pulling piece (7), when the packaging corner protector is installed on the steel frame (9), the side wall fastening mechanism is adhered to the surface of the groove (10) of the steel frame (9) through the elastic pulling piece (7), meanwhile, the elastic pulling piece (7) itself forms a protection piece for the corner of the packaging corner protector, and the elastic pulling piece is in a deformed state of being pulled, the fold surface one and the fold surface three are further pulled through the elastic force, and the fold surface one and the fold surface three are further adhered to the outer surface of the steel frame. The side wall fastening mechanism comprises an arc-shaped paperboard (81) arranged on the fold surface three (6), the width of the arc-shaped paperboard (81) is less than the width of the fold surface three (6), and one side end is connected with the elastic pulling piece (7), when the packaging corner protector is installed on the steel frame (9), the elastic pulling piece (7) pulls the arc-shaped paperboard (81) to increase the curvature of the arc-shaped paperboard (81), an outward paperboard (82) is further arranged on the arc-shaped paperboard (81), and after the packaging corner protector is installed on the steel frame (9), the end of the outward paperboard (82) abuts against the surface of the groove (10) of the steel frame (9), a side fixing paperboard (8) is further arranged on the fold surface three (6), and the side fixing paperboard (8) is arranged obliquely, and the oblique end of the side fixing paperboard (8) is overlapped on the protruding position of the arc-shaped paperboard (81).

2. A packaging corner protector for use with a steel framed photovoltaic module product according to claim 1, wherein, The hardness of the material of the arc-shaped paperboard (81) is greater than the hardness of the material of the side fixing paperboard (8).

3. A packaging corner protector for use with a steel framed photovoltaic module product according to claim 1, wherein, The end of the elastic pulling piece (7) away from the arc-shaped paperboard (81) is provided with a dovetail convex part (71) embedded in a dovetail clamping groove (72), and the dovetail clamping groove (72) is arranged on the fold surface one (1).

4. A packaging corner protector for use with a steel framed photovoltaic module product according to claim 1, wherein, The fold surface one (1) is provided with a clamping groove (4) matched with each other, when the two fold surface ones (1) are close to each other through the tooth cutter line one (2) and the tooth cutter line two (3), the clamping groove (4) is used for clamping and fixing the two fold surface ones (1) to each other.

5. A packaging corner protector for a steel-edged photovoltaic module product according to claim 1, wherein After the packaging corner protector formed by the fold surface one (1), the fold surface two (5) and the fold surface three (6) is installed on the steel frame (9), the arc-shaped paperboard (81) abuts against the surface of the groove (10) of the steel frame (9).

6. A packaging corner protector for a steel-edged photovoltaic module product according to claim 1, wherein The side of the fold surface three (6) close to the arc-shaped paperboard (81) is provided with a protruding position, and the protruding position is used for making the initial state of the arc-shaped paperboard (81) be arc-shaped.

7. A packaging corner protector for use with a steel framed photovoltaic module product according to claim 6, wherein, The sum of the width of the arc-shaped paperboard (81) and the width of the side fixed paperboard (8) is greater than the width of the fold surface three (6) and the groove (10). The sum of the width of the arc-shaped paperboard (81) and the width of the side fixed paperboard (8) is greater than the width of the fold surface three (6) and the groove (10).

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