Combinable size-adjustable double-layer buffering corner protection edge strip

Abstract

The utility model discloses a combinable size-adjustable double-layer buffering corner protection edge strip, and relates to the technical field of product packaging. Comprising an upper corner protector, a lower corner protector and a protective edge which are all of a hollow double-layer wall structure with a buffering function, and the adjacent corner protectors are connected through the protective edge. The safe edge comprises a large-size adjusting safe edge and a step safe edge; the two ends and the two sides of the protective edge, the upper protective corner and the lower protective corner are all provided with yin-yang corresponding steps, the inner steps are provided with connecting holes, and the outer steps are provided with kidney-shaped holes. The large-size adjusting safe edge comprises an inner side plate and an outer side plate arranged on the outer side of the inner side plate, and corresponding steps are formed after the inner side plate and the outer side plate are combined. According to the size of a product needing to be protected, the matched edge protecting size modules are selected to be connected and combined with the upper angle bead and the lower angle bead through the connecting holes corresponding to the female and male steps and the kidney-shaped holes through screws, the size is adjusted through the kidney-shaped holes, and the screws are tightened after the matched size is obtained; therefore, various lengths, widths and heights can be obtained to adapt to corner protection of products of various sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging products, in particular to a double-layer buffer corner guard strip with combinable and adjustable size. Background Art

[0002] At present, for household appliances such as refrigerators, washing machines, air conditioners, televisions, range hoods, etc., as well as various daily necessities, furniture, cabinets, industrial products, and other products that need to be protected by corner guard strips, most of them use paper corner guard strips, foam strips, pearl cotton strips, EVA strips, rubber strips, and single-wall plastic strips, etc. However, each of them has the following fatal defects:

[0003] 1. The foam strip is not environmentally friendly. It not only fails to pass the environmental protection test, but also the fragmented fine particles will produce non-recyclable microplastics, causing serious pollution to the environment.

[0004] 2. The foam strip is very brittle and easy to break. It is easy to break and lose its protective function when encountering a larger impact force.

[0005] 3. Both the EVA strip and the pearl cotton strip are very soft and easy to compress, with little strength and unable to protect products that are slightly heavier.

[0006] 4. Both the paper corner guard strip and the single-wall plastic corner guard strip have no buffering property and are not applicable to occasions that require buffering.

[0007] 5. Both the rubber strip and the thick paper corner guard strip are too heavy and expensive, lacking economy.

[0008] 6. The above-mentioned corner guard strips do not have much connectivity and installability. Content of the Utility Model

[0009] To solve the above practical problems and achieve the above-mentioned purpose of connectivity and installability at the same time, the utility model provides the following technical solution: A double-layer buffer corner guard strip with combinable and adjustable size, including an upper corner guard, a lower corner guard, and a guard edge. The number of the upper corner guard, the lower corner guard, and the guard edge is not less than one. A guard edge is arranged between the upper corner guard and the lower corner guard, between adjacent upper corner guards, and between adjacent lower corner guards. The upper corner guard, the lower corner guard, and the guard edge are all provided with corresponding waist-shaped holes for adjusting the size and for holes used in combined connection. The upper corner guard, the lower corner guard, and the guard edge are all provided with corresponding male and female steps for overlapping combined connection, with a flat appearance. The upper corner guard, the lower corner guard, and the guard edge are all provided with corresponding connection holes through which screws are used for combined connection and fixation. The upper corner guard, the lower corner guard, and the guard edge are all double-layer wall structures with a cavity inside and having a buffering function.

[0010] The upper corner guard, lower corner guard, and edge guard can be used independently, or two or more of them can be used in combination through self - combination and mutual combination;

[0011] The edge guard includes a large - size adjustable edge guard and a stepped edge guard. The large - size adjustable edge guard includes an inner side plate and an outer side plate arranged outside the inner side plate. There are no less than one kidney - shaped hole one opened on the outer side plate. A bolt for locking the relative positions of the inner side plate and the outer side plate is arranged inside the kidney - shaped hole one. After being locked and formed by the bolt, steps will be formed at both ends and on both sides. The large - size adjustable edge guard can be overlapped and combined with the stepped edge guard, the upper corner guard, and the corresponding yin - yang steps at both ends of the lower corner guard, and then locked and connected together with screws for use.

[0012] As a preferred technical solution of the present utility model, one end of the inner side plate extends to the outside of one end of the outer side plate to form a first edge - plate male concave platform, and the other end of the inner side plate sinks into the inside of the other end of the outer side plate to form a first edge - plate female concave platform.

[0013] As a preferred technical solution of the present utility model, one end of the stepped edge guard is provided with a second stepped - edge - guard male concave platform, and the other end is provided with a second stepped - edge - guard female concave platform.

[0014] As a preferred technical solution of the present utility model, there are no less than one kidney - shaped hole two arranged inside the first edge - plate female concave platform, and no less than one kidney - shaped hole three arranged inside the second stepped - edge - guard female concave platform. Bolts are arranged inside both the kidney - shaped hole two and the kidney - shaped hole three. The second stepped - edge - guard male concave platform is clamped into the inside of the first edge - plate female concave platform and locked by the bolt inside the kidney - shaped hole two.

[0015] As a preferred technical solution of the present utility model, one end of the upper corner guard is provided with an upper male concave platform, and the other end is provided with an upper female concave platform. Connection holes are arranged on both the upper male concave platform and the upper female concave platform for the mutual connection or self - connection between the edge guard, the upper corner guard, and the lower corner guard.

[0016] As a preferred technical solution of the present utility model, there are no less than one kidney - shaped hole four arranged inside the upper female concave platform and a bolt is arranged inside the kidney - shaped hole four. The first edge - plate male concave platform between two adjacent upper corner guards is clamped into the inside of the upper female concave platform and locked by the bolt inside the kidney - shaped hole four. The second stepped - edge - guard female concave platform between two adjacent upper corner guards is clamped into the inside of the upper male concave platform and locked by the bolt inside the kidney - shaped hole three.

[0017] As a preferred technical solution of the present utility model, one end of the lower corner guard is provided with a lower male concave platform, and the other end is provided with a lower female concave platform. Connection holes are arranged on both the lower male concave platform and the lower female concave platform for the mutual connection or self - connection between the edge guard, the upper corner guard, and the lower corner guard.

[0018] As a preferred technical solution of the present utility model, there are no less than one kidney-shaped hole five provided inside the lower vaginal concave platform, and bolts are provided inside the kidney-shaped hole five. The edge plate male concave platform one between two adjacent lower corner guards is snapped into the inside of the lower vaginal concave platform and locked by the bolts inside the kidney-shaped hole five. The stepped edge female concave platform two between two adjacent lower corner guards is snapped into the inside of the lower male concave platform and locked by the bolts inside the kidney-shaped hole three.

[0019] As a preferred technical solution of the present utility model, one side of the upper corner guard is provided with an upper corner guard female concave platform, and the other side is provided with an upper corner guard male concave platform. There are no less than one kidney-shaped hole six provided inside the upper corner guard female concave platform, and bolts are provided inside the kidney-shaped hole six. One side of the lower corner guard is provided with a lower corner guard male concave platform, and the other side is provided with a lower corner guard female concave platform.

[0020] As a preferred technical solution of the present utility model, the edge plate male concave platform one between the upper corner guard and the lower corner guard is snap-connected with the upper corner guard female concave platform and locked by the bolts inside the kidney-shaped hole six. The stepped edge female concave platform two between the upper corner guard and the lower corner guard is snap-connected with the upper corner guard male concave platform and locked by the bolts inside the kidney-shaped hole three.

[0021] Compared with the prior art, the present utility model provides a combinable and adjustable-size double-layer buffer corner guard strip, which has the following beneficial effects:

[0022] 1. For the combinable and adjustable-size double-layer buffer corner guard strip, the setting of multiple kidney-shaped holes enables the relative positions between the large-size adjustable edge guard and the stepped edge guard, between the large-size adjustable edge guard and the upper corner guard, between the stepped edge guard and the lower corner guard, and between the inner edge plate and the outer edge plate to be adjusted. The combined size can be large or small, and the applicable product size range is wide, further ensuring the versatility of the product.

[0023] 2. For the combinable and adjustable-size double-layer buffer corner guard strip, the upper corner guard, the lower corner guard, and the edge guard are all formed by using an environment-friendly, tough and flame-retardant material. The tough material has good plastic formability and can be formed according to the edge shape of the product to be adhered, achieving good matching.

[0024] 3. For the combinable and adjustable-size double-layer buffer corner guard strip, the strength is adjusted by adjusting the thickness between the inner and outer walls of the upper corner guard, the lower corner guard, and the edge guard. The connecting holes between the inner and outer walls can also strengthen the wall. A smaller wall thickness can generate greater strength, saving materials, being light in weight, reducing the packaging volume, and saving the packaging cost.

[0025] 4. The combinable and adjustable-size double-layer buffer corner guard strip can form a protective frame structure of a rectangular body by four upper corner guards, four lower corner guards and the guard edges connected between the corner guards, and can wrap and protect all the corners of the product to be protected. Due to its good strength support and convenient combination mode for changing the size, the six surfaces of the rectangular protective frame form concave platforms that can connect flat plates due to the combination of male and female concave platforms, and the protective frame can be further combined with the flat plate.

[0026] 5. Since the upper corner guards, lower corner guards and guard edges of the combinable and adjustable-size double-layer buffer corner guard strip are all independent modules, the upper corner guards, lower corner guards and guard edges can all be used independently to protect the corners and edges of the product, or can be used in combination with each other to protect the corners. With multiple usage methods, the application prospect is broader. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0028] Figure 2 It is an exploded view of the structure of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0029] Figure 3 It is an exploded view of the guard edge structure of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0030] Figure 4 It is a schematic structural diagram of the upper corner guard of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0031] Figure 5 It is a schematic structural diagram of the lower corner guard of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0032] Figure 6 It is a schematic structural diagram of the guard edge of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model;

[0033] Figure 7 It is a schematic structural diagram of the adjustable edge of a combinable and adjustable-size double-layer buffer corner guard strip proposed by the present utility model.

[0034] In the figure: 1. Upper corner guard; 11. Male concave-convex of upper corner guard; 12. Female concave platform of upper corner guard; 13. Upper male concave platform; 14. Upper female concave platform; 2. Lower corner guard; 22. Female concave-convex of lower corner guard; 23. Lower male concave platform; 24. Lower female concave platform; 21. Male concave platform of lower corner guard; 3. Edge guard; 31. Large-size adjustable edge guard; 311. Inner side plate; 312. Outer side plate; 313. First male concave platform of side plate; 314. First female concave platform of side plate; 32. Step edge guard; 321. Second male concave platform of step edge guard; 322. Second female concave platform of step edge guard; 4. Waist-shaped hole; 41. First waist-shaped hole; 42. Second waist-shaped hole; 43. Third waist-shaped hole; 44. Fourth waist-shaped hole; 45. Fifth waist-shaped hole; 46. Sixth waist-shaped hole; 5. Step; 6. Connecting hole. Detailed implementation manner

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-7 , a combinable and adjustable double-layer buffer corner guard edge strip, including an upper corner guard 1, a lower corner guard 2 and an edge guard 3. The number of the upper corner guard 1, the lower corner guard 2 and the edge guard 3 is not less than one. An edge guard 3 is arranged between the upper corner guard 1 and the lower corner guard 2, between adjacent upper corner guards 1 and between adjacent lower corner guards 2. The upper corner guard 1, the lower corner guard 2 and the edge guard 3 are all provided with corresponding waist-shaped holes 4 for adjusting the size and combination connection holes; the upper corner guard 1, the lower corner guard 2 and the edge guard 3 are all provided with corresponding male and female steps 5 for overlapping combination connection and the appearance is flat; the upper corner guard 1, the lower corner guard 2 and the edge guard 3 are all provided with corresponding connecting holes 6, and screws are used for combination connection and fixation through them. The upper corner guard 1, the lower corner guard 2 and the edge guard 3 are all double-layer wall structures with cavities inside and having a buffer function. The ductile material has good plastic formability. The design of the inner wall with a hollow double layer causes the outer wall to deform inward when impacted by an external force, and the reaction force offsets the impact external force to achieve a buffer effect. It is only necessary to measure the strength of the outer wall and the distance between the inner wall and the hollow to ensure that the deformation process of the outer wall does not affect the protection of the product by the inner wall.

[0037] The upper corner guard 1, the lower corner guard 2 and the edge guard 3 can be used alone, or two or more of them can be used in combination through self-combination and mutual combination.

[0038] The edge guard 3 includes a large-size adjustable edge guard 31 and a stepped edge guard 32. The large-size adjustable edge guard 31 includes an inner side plate 311 and an outer side plate 312 disposed outside the inner side plate 311. The outer side plate 312 is provided with at least one kidney-shaped hole 41. A bolt for locking the relative positions of the inner side plate 311 and the outer side plate 312 is disposed inside the kidney-shaped hole 41. After being locked and formed by the bolt, steps will be formed at both ends and on both sides. The large-size adjustable edge guard 31 can be overlapped and combined with the corresponding male and female steps at both ends of the stepped edge guard 32, the upper corner guard 1, and the lower corner guard 2, and then locked and connected together by screws for use. The male and female steps provided on both sides of the large-size adjustable edge guard 31 can be connected with other parts for use.

[0039] As a specific technical solution of this embodiment, the upper corner guard 1, the lower corner guard 2, and the edge guard 3 are all formed of an environment-friendly tough flame-retardant material. The tough material can be plastic or a thin metal plate with high elasticity. Due to its good plastic formability, it can be formed according to the edge shape of the product to be adhered, achieving good matching.

[0040] As a specific technical solution of this embodiment, a plurality of connection holes 6 are provided on the upper corner guard 1, the lower corner guard 2, and the edge guard 3. The connection holes 6 can connect bolts, and the connection holes 6 between the inner and outer walls can also strengthen the wall between them. With a smaller wall thickness, greater strength can be generated, saving materials and being light in weight. At the same time, the strength can also be adjusted by adjusting the wall thickness according to the situation of the product to be protected. Through the above measures, the size has strong versatility, the materials can be greatly reduced, the packaging volume can be reduced, and the packaging cost can be saved.

[0041] As a specific technical solution of this embodiment, refer to Figures 1-2 , a rectangular protection frame structure can be formed by four upper corner guards 1, four lower corner guards 2, and a plurality of edge guards 3, and all the corners of the product to be protected can be covered and protected.

[0042] As a specific technical solution of this embodiment, since the upper corner guard 1, the lower corner guard 2, and the edge guard 3 are all independent modules, the upper corner guard 1, the lower corner guard 2, and the edge guard 3 can all be independently used to protect the corners and edges of the product, or can be used in combination with each other to protect the corners. With multiple usage methods, the application prospect is broader.

[0043] As a specific technical solution of this embodiment, one end of the inner side plate 311 extends to the outside of one end of the outer side plate 312 to form a side plate male concave platform 313, and the other end of the inner side plate 311 sinks into the inside of the other end of the outer side plate 312 to form a side plate female concave platform 314.

[0044] In this embodiment, referring to FIGS. 6-7, not only are the two ends of the inner side plate 311 and the outer side plate 312 staggered from each other to form a first edge plate male concave platform 313 and a first edge plate female concave platform 314, but also the two sides of the inner side plate 311 and the outer side plate 312 are designed to be staggered from each other. As a result, after the upper corner protector 1, the lower corner protector 2, and the edge protector 3 are combined into a protective frame, concave platforms are formed on the six faces of the protective frame.

[0045] As a specific technical solution of this embodiment, one end of the stepped edge protector 32 is provided with a second stepped edge protector male concave platform 321, and the other end is provided with a second stepped edge protector female concave platform 322. The second stepped edge protector male concave platforms 321 and the second stepped edge protector female concave platforms 322 provided on both sides of the stepped edge protector 32 can be connected to other parts for use.

[0046] In this embodiment, the upper corner protector 1, the lower corner protector 2, and the waist-shaped holes on the stepped edge protector 32 and the female concave platform of the large-size adjustable edge protector 31 all have the function of fine-tuning the size. The waist-shaped hole 41 on the outer side plate 312 of the large-size adjustable edge protector 31 can be used for large-size adjustment, greatly increasing the size range. Different size modules can be infinitely adjusted in relative position through the waist-shaped hole 41 to obtain all the sizes within the range of this size module. Refer to Figures 6-7 , the two sides of the stepped edge protector 32 are designed to be staggered from each other in the same way as the two sides of the large-size adjustable edge protector 31. As a result, after the upper corner protector 1, the lower corner protector 2, and the edge protector 3 are combined into a protective frame, concave platforms are formed on the six faces of the protective frame.

[0047] As a specific technical solution of this embodiment, the inside of the first edge plate female concave platform 314 is provided with no less than one waist-shaped hole 42, and the inside of the second stepped edge protector female concave platform 322 is provided with no less than one waist-shaped hole 43. Bolts are arranged inside both the waist-shaped hole 42 and the waist-shaped hole 43. The second stepped edge protector male concave platform 321 is snapped into the inside of the first edge plate female concave platform 314 and locked by the bolt inside the waist-shaped hole 42.

[0048] In this embodiment, the waist-shaped hole 42 can adjust the distance between the stepped edge protector 32 and the large-size adjustable edge protector 31, so as to adjust the overall length of the edge protector 3 and adapt it to products of different sizes for use.

[0049] As a specific technical solution of this embodiment, one end of the upper corner guard 1 is provided with an upper male concave platform 13, and the other end is provided with an upper female concave platform 14. Connecting holes 6 are provided on both the upper male concave platform 13 and the upper female concave platform 14 for the mutual connection or self-connection between the edge guard 3, the upper corner guard 1, and the lower corner guard 2. The interior of the upper female concave platform 14 is provided with no less than one kidney-shaped hole four 44, and bolts are arranged inside the kidney-shaped hole four 44. The edge plate male concave platform one 313 between two adjacent upper corner guards 1 is snapped into the interior of the upper female concave platform 14 and locked by the bolts inside the kidney-shaped hole four 44. The stepped edge guard female concave platform two 322 between two adjacent upper corner guards 1 is snapped into the interior of the upper male concave platform 13 and locked by the bolts inside the kidney-shaped hole three 43. One end of the lower corner guard is provided with a lower male concave platform 23, and the other end is provided with a lower female concave platform 24. Connecting holes 6 are provided on both the lower male concave platform 23 and the lower female concave platform 24 for the mutual connection or self-connection between the edge guard 3, the upper corner guard 1, and the lower corner guard 2. The interior of the lower female concave platform 24 is provided with no less than one kidney-shaped hole five 45, and bolts are arranged inside the kidney-shaped hole five 45. The edge plate male concave platform one 313 between two adjacent lower corner guards 2 is snapped into the interior of the lower female concave platform 24 and locked by the bolts inside the kidney-shaped hole five 45. The stepped edge guard female concave platform two 322 between two adjacent lower corner guards 2 is snapped into the interior of the lower male concave platform 23 and locked by the bolts inside the kidney-shaped hole three 43.

[0050] In this implementation scheme, the upper corner guard 1, the lower corner guard 2, and the edge guard 3 can be formed by flattening blow molding and then folding in half, greatly reducing the processing difficulty, reducing the processing cost, saving processing materials, and making the structural design more reasonable.

[0051] As a specific technical solution of this embodiment, one side of the upper corner guard 1 is provided with an upper corner guard female concave platform 12, and the other side is provided with an upper corner guard male concave platform 11. The interior of the upper corner guard female concave platform 12 is provided with no less than one kidney-shaped hole six 46, and bolts are arranged inside the kidney-shaped hole six 46. One side of the lower corner guard 2 is provided with a lower corner guard male concave platform 21, and the other side is provided with a lower corner guard female concave platform 22.

[0052] In this implementation scheme, refer to Figure 4 , one side of the upper corner guard is provided with an upper corner guard female concave platform 12, and the other side is provided with an upper corner guard male concave platform 11. Thus, after the upper corner guard 1, the lower corner guard 2, and the edge guard 3 are combined into a protective frame, concave platforms are formed on the six surfaces of the protective frame, ensuring the consistency of the six surfaces of the protective frame.

[0053] As a specific technical solution of this embodiment, the first male concave platform 313 of the side plate between the upper corner guard 1 and the lower corner guard 2 is clamped with the female concave platform 12 of the upper corner guard and locked by the bolt inside the sixth kidney-shaped hole 46. The second female concave platform 322 of the stepped edge guard between the upper corner guard 1 and the lower corner guard 2 is clamped with the male concave platform 21 of the lower corner guard and locked by the bolt inside the third kidney-shaped hole 43.

[0054] In this implementation scheme, referring to Figure 5 , on one side of the lower corner guard, there is a male concave platform 21 of the lower corner guard, and on the other side, there is a female concave platform 22 of the lower corner guard. Thus, after the upper corner guard 1, the lower corner guard 2, and the edge guard 3 are combined into a protective frame, concave platforms are formed on the six faces of the protective frame, ensuring the consistency of the six faces of the protective frame.

[0055] As a specific technical solution of this embodiment, the settings of the first kidney-shaped hole 41, the second kidney-shaped hole 42, the third kidney-shaped hole 43, the fourth kidney-shaped hole 44, the fifth kidney-shaped hole 45, and the sixth kidney-shaped hole 46 enable the relative positions between the large-size adjustable edge guard 31 and the stepped edge guard 32, between the large-size adjustable edge guard 31 and the upper corner guard 1, between the stepped edge guard 32 and the lower corner guard 2, and between the inner side plate 311 and the outer side plate 312 to be adjusted. The upper corner guard 1, the lower corner guard 2, and the edge guard 3 with matching sizes can be adjusted infinitely within each set section, and the connected combinations can be large or small, so that almost all common sizes can be obtained, further ensuring the versatility of this product.

[0056] In summary, for this combinable and adjustable-size double-layer buffer corner guard strip, the settings of multiple kidney-shaped holes enable the relative positions between the large-size adjustable edge guard 31 and the stepped edge guard 32, between the large-size adjustable edge guard 31 and the upper corner guard 1, between the stepped edge guard 32 and the lower corner guard 2, and between the inner side plate 311 and the outer side plate 312 to be adjusted. The combined size can be large or small, and the applicable product size range is wide, further ensuring the versatility of this product.

[0057] For this combinable and adjustable-size double-layer buffer corner guard strip, the upper corner guard 1, the lower corner guard 2, and the edge guard 3 are all formed by using environmentally friendly, tough, and flame-retardant materials. The tough materials have good plastic formability and can be formed according to the edge shape of the product to be adhered, achieving good matching.

[0058] For this combinable and adjustable-size double-layer buffer corner guard strip, the strength is adjusted by adjusting the thickness between the inner and outer walls of the upper corner guard 1, the lower corner guard 2, and the edge guard 3. The connecting holes 6 between the inner and outer walls can also strengthen the wall between them. A smaller wall thickness can generate greater strength, saving materials, being lightweight, reducing the packaging volume, and saving the packaging cost.

[0059] The combinable and adjustable-size double-layer buffer corner guard strip can form a rectangular protection frame structure by several upper corner guards 1, four lower corner guards 2 and a side guard 3, and can wrap and protect all the corners of the product to be protected. Because of its good strength support and convenient combination mode for changing the size, the six surfaces of the rectangular protection frame form concave platforms that can connect flat plates due to the combination of male and female concave platforms, and the protection frame can be further combined with the flat plate.

[0060] For the combinable and adjustable-size double-layer buffer corner guard strip, since the upper corner guard 1, the lower corner guard 2 and the side guard 3 are all independent modules, the upper corner guard 1, the lower corner guard 2 and the side guard 3 can all be used independently to protect the corners and edges of the product, or can be used in combination with each other to protect the corners. With various usage methods, the application prospect is broader.

[0061] It should be noted that in this text, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combinable and size-adjustable double-layer buffer corner edge strip, comprising an upper corner guard (1), a lower corner guard (2) and an edge guard (3), characterized in that: The number of the upper corner protector (1), the lower corner protector (2) and the edge protector (3) is not less than one. An edge protector (3) is provided between the upper corner protector (1) and the lower corner protector (2), between two adjacent upper corner protectors (1) and between two adjacent lower corner protectors (2). The upper corner protector (1), the lower corner protector (2) and the edge protector (3) are provided with corresponding waist-shaped holes (4) for adjusting the size and holes for combined connection; the upper corner protector (1), the lower corner protector (2) and the edge protector (3) are provided with corresponding yin-yang steps (5) for overlapping combined connection and smooth appearance; the upper corner protector (1), the lower corner protector (2) and the edge protector (3) are provided with corresponding connection holes (6) through which screws are passed for combined connection and fixing; the upper corner protector (1), the lower corner protector (2) and the edge protector (3) are double-wall structures with a buffer function and a cavity inside; The upper corner protector (1), the lower corner protector (2) and the edge protector (3) can be used individually, or two or more of them can be used in combination by self-combination or mutual combination; The edge guard (3) comprises a large-size adjustable edge guard (31) and a step edge guard (32). The large-size adjustable edge guard (31) comprises an inner edge plate (311) and an outer edge plate (312) arranged outside the inner edge plate (311). The outer edge plate (312) is provided with at least one waist-shaped hole (41). Bolts for locking the relative positions of the inner edge plate (311) and the outer edge plate (312) are arranged inside the waist-shaped hole (41). After being formed by bolt locking, steps are formed at both ends and both sides. The large-size adjustable edge guard (31) can overlap and combine with the corresponding yin and yang steps at the two ends of the step edge guard (32), the upper corner guard (1), and the lower corner guard (2) through the yin and yang steps arranged at the two ends, and then be locked and connected together by screws for use.

2. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 1, characterized in that: One end of the inner side plate (311) extends to the outside of one end of the outer side plate (312) to form a positive concave platform (313) of the side plate, and the other end of the inner side plate (311) sinks into the inside of the other end of the outer side plate (312) to form a negative concave platform (314) of the side plate.

3. The combinable and adjustable-size double-layer buffer corner edge strip according to claim 2, characterized in that: One end of the step edge guard (32) is provided with a second step edge guard positive concave platform (321), and the other end is provided with a second step edge guard negative concave platform (322).

4. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 3, characterized in that: The inner part of the side plate concave platform 1 (314) is provided with at least one waist-shaped hole 2 (42), the inner part of the step edge protection concave platform 2 (322) is provided with at least one waist-shaped hole 3 (43), the inner parts of the waist-shaped hole 2 (42) and the waist-shaped hole 3 (43) are both provided with bolts, and the step edge protection positive concave platform 2 (321) is inserted into the inner part of the side plate concave platform 1 (314) and is locked by the bolts in the inner part of the waist-shaped hole 2 (42).

5. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 1, characterized in that: An upper positive concave platform (13) is provided at one end of the upper corner protector (1), and an upper negative concave platform (14) is provided at the other end. Both the upper positive concave platform (13) and the upper negative concave platform (14) are provided with connection holes (6) for mutual connection or self-connection between the edge protector (3), the upper corner protector (1) and the lower corner protector (2).

6. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 5, characterized in that: The upper concave platform (14) is provided with at least one waist-shaped hole four (44) inside and a bolt is provided inside the waist-shaped hole four (44); the side plate positive concave platform one (313) located between two adjacent upper corner guards (1) is inserted into the interior of the upper concave platform (14) and is locked by the bolt inside the waist-shaped hole four (44); the step edge guard negative concave platform two (322) located between two adjacent upper corner guards (1) is inserted into the interior of the upper positive concave platform (13) and is locked by the bolt inside the waist-shaped hole three (43).

7. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 1, characterized in that: One end of the lower corner protector (2) is provided with a lower male concave platform (23), and the other end is provided with a lower female concave platform (24). Both the lower male concave platform (23) and the lower female concave platform (24) are provided with connection holes (6) for mutual connection or self-connection between the edge protector (3), the upper corner protector (1), and the lower corner protector (2).

8. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 7, characterized in that: The lower concave platform (24) is provided with at least one waist-shaped hole five (45) inside and a bolt is provided inside the waist-shaped hole five (45); the side plate positive concave platform one (313) located between two adjacent lower corner guards (2) is inserted into the lower concave platform (24) and is locked by the bolt inside the waist-shaped hole five (45); the step edge guard negative concave platform two (322) located between two adjacent lower corner guards (2) is inserted into the lower positive concave platform (23) and is locked by the bolt inside the waist-shaped hole three (43).

9. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 1, characterized in that: The upper corner guard (1) is provided with an upper corner guard concave platform (12) on one side and an upper corner guard male concave platform (11) on the other side; the upper corner guard female concave platform (12) is provided with at least one waist-shaped hole (46) inside, and bolts are provided inside the waist-shaped hole (46); the lower corner guard (2) is provided with a lower corner guard male concave platform (21) on one side and a lower corner guard female concave platform (22) on the other side.

10. The combinable and size-adjustable double-layer buffer corner edge strip according to claim 1, characterized in that: The first positive concave platform (313) of the side plate located between the upper corner guard (1) and the lower corner guard (2) is snap-fitted with the upper corner guard female concave platform (12) and is locked by bolts inside the sixth waist-shaped hole (46); the second negative concave platform (322) of the step edge guard located between the upper corner guard (1) and the lower corner guard (2) is snap-fitted with the lower corner guard positive concave platform (21) and is locked by bolts inside the third waist-shaped hole (43).

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