CN213229792U - Corner protector for packaging - Google Patents

Abstract

The utility model relates to a corner protector for package, include: a top wall having a left side edge and a right side edge that are substantially perpendicular to each other; the left side wall is formed by vertically or obliquely and downwards extending from the left side edge of the top wall; the right side wall is formed by vertically or obliquely extending downwards from the right side edge of the top wall and is connected with the left side wall; the hollow glass is characterized in that at least one of the junction of the inner surfaces of the top wall and the left side wall, the junction of the inner surfaces of the top wall and the right side wall and the junction of the inner surfaces of the left side wall and the right side wall is provided with a concave groove. The utility model relates to a corner protector for packing, thereby the juncture of two adjacent walls is difficult to the fracture and is difficult for coming off from the juncture of two adjacent walls of packed material.

Description

Corner protector for packaging

Technical Field

The utility model relates to the field of packaging technology, concretely relates to angle bead is used to packing.

Background

The angle bead is as a package commonly used, fills usually in the fragile easy-to-split clearance between by the apex angle department of packing material and the packing box, can enough protect the apex angle department of article in the box to avoid colliding with to increase wear-resisting effect, can also prevent to be strikeed to cause the packing box damaged by rocking of packing material and producing to the packing box. At present, the angle bead structure on the market is the same roughly, mainly including the roof that has mutually perpendicular's first lateral margin and second lateral margin, certainly the vertical downwardly extending's of first lateral margin first lateral wall of roof, certainly the vertical downwardly extending of second lateral margin of roof and with the second lateral wall that first lateral wall is connected, the juncture of the adjacent two walls of this kind of angle bead is easy to be split when receiving the striking, makes the angle bead drop easily to the influence is to the fragile easy cracked protective effect by packing material and packing box.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that thereby it is difficult to fracture to provide a corner protector for packing that the juncture of two adjacent walls is difficult for following the juncture of two adjacent walls of by the packing material to drop to foretell technical current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a corner protector for packaging, comprising:

a top wall having a left side edge and a right side edge that are substantially perpendicular to each other;

the left side wall is formed by vertically or obliquely and downwards extending from the left side edge of the top wall;

the right side wall is formed by vertically or obliquely extending downwards from the right side edge of the top wall and is connected with the left side wall;

it is characterized in that the preparation method is characterized in that,

at least one of the junction of the inner surfaces of the top wall and the left side wall, the junction of the inner surfaces of the top wall and the right side wall, and the junction of the inner surfaces of the left side wall and the right side wall is provided with a concave groove.

The corner protector may be made of a material having a certain plasticity, such as plastic, styrofoam, etc., and more preferably, the top wall, the left side wall, and the right side wall are made of an elastic material. The elastic material refers to polypropylene foam, polyethylene foam, rubber, etc. The corner protector made of elastic materials has better toughness, is not easy to crack under stress, has the tendency of being tightly attached to the wall surface of a packaged object even when the packaged object impacts the corner protector, can increase the contact area between the inner wall of the corner protector and the packaged object so as to enhance the friction force between the inner wall of the corner protector and the packaged object, and enables the corner protector to be more difficult to fall off.

In order to ensure that the corner protector has better positioning effect at the junction of the two adjacent side walls of the packaged object, the groove is used for embedding the junction of the two adjacent wall surfaces of the packaged object. Through setting the recess to the juncture embedding that supplies between the two adjacent walls of packed article, make the notch of recess can grasp by two adjacent walls of packed article to, when the juncture of two adjacent walls of angle bead received the impact, can imbed in the recess more deeply and by the notch centre gripping of recess tighter by the juncture of two adjacent walls of packed article, be difficult to deviate from the recess more, make the angle bead more firm in the location by the juncture of the adjacent both sides wall of packed article.

In order to make the structural strength of two adjacent wall surfaces of the corner protector equal to the area of the groove corresponding to the stress dispersion of the two adjacent wall surfaces, the groove is symmetrically arranged relative to a diagonal plane between the two adjacent wall surfaces. When two adjacent wall surfaces of the corner protector are turned relatively, the pulling force of the two adjacent wall surfaces to the junction of the two adjacent wall surfaces can be evenly distributed to the two symmetrically arranged sides of the groove wall, so that the impact action on the two sides of the groove wall is more balanced, and the corner protector is more difficult to break from the groove.

In order to facilitate the processing of the groove, the groove comprises a first groove arranged at the junction of the inner surfaces of the top wall and the left side wall, a second groove arranged at the junction of the inner surfaces of the top wall and the right side wall, and a third groove arranged at the junction of the inner surfaces of the left side wall and the right side wall, wherein the first groove is provided with a first plane and a second plane which are adjacent to each other, the second groove is provided with a third plane and a fourth plane which are adjacent to each other, and the third groove is provided with a fifth plane and a sixth plane which are adjacent to each other.

In order to make the corner protector have better cushioning effect on the packaged object, the first groove is also provided with a first connecting surface connecting the inner surface of the left side wall and the first plane, and a second connecting surface connecting the inner surface of the top wall and the second plane, and the first connecting surface and the second connecting surface are arranged in parallel; the second groove is also provided with a third connecting surface for connecting the inner surface of the top wall with the third plane and a fourth connecting surface for connecting the inner surface of the right side wall with the fourth plane, and the third connecting surface and the fourth connecting surface are arranged in parallel; the third recess still have connect the internal surface of left side wall with the fifth connection face of fifth plane, and connect the internal surface of right side wall with the sixth connection face of sixth plane, and, fifth connection face and sixth connection face parallel arrangement.

Taking the outer surface interface of the top wall and the left side wall of the corner protector impacted by an external force, the external force is firstly transmitted to the interface of the first plane and the second plane and is decomposed into two component forces along the first plane and the second plane, then the two component forces are respectively transmitted to the interface of the first plane and the first connecting surface and the interface of the second plane and the second connecting surface and are decomposed again, the component force transmitted along the first plane is decomposed into a component force along the first connecting surface and a component force perpendicular to the first connecting surface, the component force transmitted along the second plane is decomposed into a component force along the second connecting surface and a component force perpendicular to the second connecting surface, finally, the component force transmitted along the first connecting surface to the interface of the inner surface of the first connecting surface and the left side wall is decomposed into a component force perpendicular to the inner surface of the left side wall and a component force along the inner surface of the left side wall, and the component force transmitted along the second connecting surface to the interface of the second connecting surface and the inner surface of the top wall is decomposed into a component force perpendicular to the inner surface The component force and the component force along the inner surface of the top wall enable the initial external force applied to the junction of the top wall and the outer surface of the left side wall of the corner protector to be reduced to be the V2/4 of the initial external force value after three-stage decomposition, and the V2/4 acts on the left side wall and the top wall of the packaged object respectively, so that the external force decomposition stage number acting on the junction of the two adjacent wall surfaces of the corner protector is increased, the force acting on the wall surface of the packaged object is further reduced, the buffering effect of the corner protector on the packaged object is better, and the protection effect is better.

In order to increase the positioning point of the groove at the junction of two adjacent walls of the packaged object, the distance between the junction of the first plane and the second plane and the plane of the notch of the first groove is less than or equal to 1/2 of the distance between the first connecting surface and the second connecting surface, the distance between the junction of the third plane and the fourth plane and the plane of the notch of the second groove is less than or equal to 1/2 of the distance between the third connecting surface and the fourth connecting surface, and the distance between the junction of the fifth plane and the sixth plane and the plane of the notch of the third groove is less than or equal to 1/2 of the distance between the fifth connecting surface and the sixth connecting surface. Through the design to the recess size, make in each recess two planar juncture can supply to be inserted wherein by the juncture of the adjacent two walls of packing material, the locating point of recess at the juncture area of the adjacent two walls of article becomes three by two, promotes the locating effect in the recess by the juncture of the adjacent two walls of packing material, still makes the angle bead inner wall higher with by packing material wall laminating degree, makes the angle bead be difficult to drop.

When the junction of two adjacent walls of the packaged object is inserted into the junction of two planes in the groove, in order to increase the contact area between the groove and the two adjacent walls of the packaged object, at least one of the included angle between the first plane and the second plane, the included angle between the third plane and the fourth plane, and the included angle between the fifth plane and the sixth plane is an acute angle or a right angle. When the contained angle that adjacent two planes formed is acute angle or right angle in the recess, can make adjacent two planes have the trend of pasting closely on by the packing material surface because the elastic recovery effect, thereby can increase each plane and by the area of contact of packing material wall reinforcing recess and by the frictional force between the packing material, make the recess be difficult to produce relative movement with the juncture of the adjacent both sides wall of packing material, the angle bead location is more firm.

In order to enable the packaged object to be embedded into the groove deeper when the boundary between the two adjacent side walls of the corner protector is stressed, the distance between the boundary between the first plane and the second plane and the plane where the notch of the first groove is located is larger than 1/2 of the distance between the first connecting surface and the second connecting surface, the distance between the boundary between the third plane and the fourth plane and the plane where the notch of the second groove is located is larger than 1/2 of the distance between the third connecting surface and the fourth connecting surface, and the distance between the boundary between the fifth plane and the sixth plane and the plane where the notch of the third groove is located is larger than 1/2 of the distance between the fifth connecting surface and the sixth connecting surface. The deeper the packaged object is inserted into the groove, the less easily the packaged object is separated from the groove.

In order to ensure that the corner protector is positioned more firmly at the top corner of the packaged object and has better protection effect on the top corner of the packaged object, the top corner formed by the intersection of the top wall, the left side wall and the right side wall is provided with a perforation. On one hand, when the wall surfaces of the corner protector are relatively turned, the pulling force of the wall surfaces to the vertex angles can be dispersed by the through holes, so that the vertex angles of the corner protector are not easy to crack and fall off from the vertex angles of the packaged objects, and the corner protector is positioned more firmly at the vertex angles of the packaged objects; on the other hand, when external force acts on the top corner of the corner protector, the external force can be decomposed into component forces in three directions along the boundary of the outer surfaces of the two adjacent wall surfaces of the corner protector, so that the extrusion impact on the packaged object is reduced, and the protection effect of the corner protector on the top corner of the packaged object is better.

In order to make the corner protector position the effect better at the apex angle of the object to be packed, the perforation is used for supplying and is inlayed at the apex angle of the object to be packed. By the apex angle department of packing material can imbed in the perforation, make to perforate and can grasp by the apex angle department of packing material to, when the apex angle department of angle bead received the impact, can imbed more deeply by the apex angle department of packing material and perforate in and grasp tighter by the perforation, be difficult to deviate from the perforation more, make the angle bead more firm in the location by the apex angle department of packing material, the angle bead is difficult to drop from the apex angle department by the packing material.

In order to enable the outer surface junction of each wall surface of the corner protector to be more smooth and save raw materials of the corner protector, at least one of the outer surface junction of the top wall and the left side wall, the outer surface junction of the top wall and the right side wall and the outer surface junction of the left side wall and the right side wall is provided with a chamfer or a fillet. In actual production, more corner protector raw materials can be saved by increasing the chamfer length and angle or the rounding angle and radius of each wall surface of the corner protector.

Compared with the prior art, the utility model has the advantages of: the corner protector has the advantages that at least one of the junction of the inner surfaces of the top wall and the left side wall, the junction of the inner surfaces of the top wall and the right side wall and the junction of the inner surfaces of the left side wall and the right side wall is provided with the concave groove, so that the flexibility of the corner protector can be increased, the corner protector has certain elastic recovery capability at the groove, when the two adjacent side walls of the corner protector are relatively overturned due to the impact of a packaged material, the pulling force of the two adjacent walls on the junction of the two adjacent walls can be dispersed by the groove, the corner protector is not easy to crack, the corner protector is not easy to fall off, and the effect of protecting the junction of the packaged material and the two adjacent walls of the packaging box is prevented; the groove is used for embedding the junction of the two adjacent walls of the packaged object, so that the two adjacent walls of the packaged object can be clamped by the notch of the groove, and when the junction of the two adjacent walls of the corner protector is impacted, the junction of the two adjacent walls of the packaged object can be embedded into the groove more deeply and clamped more tightly by the notch of the groove, the corner protector is less prone to being separated from the groove, and the corner protector is positioned more firmly at the junction of the two adjacent walls of the packaged object; on one hand, when the wall surfaces of the corner protector are relatively turned over, the pulling force of the opposite vertex angles of the wall surfaces can be dispersed by the perforations, so that the vertex angles of the corner protector are not easy to crack and fall off from the vertex angles of the packaged object, and the corner protector is more firmly positioned at the vertex angles of the packaged object; on the other hand, when external force acts on the top corner of the corner protector, the external force can be decomposed into component forces in three directions along the boundary of the outer surfaces of the two adjacent wall surfaces of the corner protector, so that the extrusion impact on the packaged object is reduced, and the protection effect of the corner protector on the top corner of the packaged object is better.

Drawings

Fig. 1 is a three-dimensional structure diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic view showing an example of the application of embodiment 1 of the present invention to the top corner of an object to be packed;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a diagram illustrating a stress analysis of the junction between the top wall and the left side wall in embodiment 1 of the present invention;

fig. 5 is a force analysis diagram of the vertex angle of embodiment 1 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

As shown in fig. 1-5, is a first preferred embodiment of the present invention.

As shown in fig. 1, the corner protector 101 in the present embodiment includes a top wall 1, a left side wall 2 and a right side wall 3, wherein the top wall 1 has a left side edge and a right side edge perpendicular to each other, the left side wall 2 extends vertically downward from the left side edge of the top wall 1, the right side wall 3 extends vertically downward from the right side edge of the top wall 1, and the right side wall 3 is connected to the left side wall 2. The inner surface junction of the top wall 1 and the left side wall 2, the inner surface junction of the top wall 1 and the right side wall 3, and the inner surface junction of the left side wall 2 and the right side wall 3 are all provided with concave grooves (see fig. 1).

In this embodiment, through making the internal surface juncture of roof 1 and left sidewall 2, the internal surface juncture of roof 1 and right sidewall 3, and all have sunken recess in the internal surface juncture of left sidewall 2 and right sidewall 3, can increase the flexibility of angle bead 101, make angle bead 101 have certain elastic recovery ability in the recess, when the adjacent both sides wall of angle bead 101 produces relative upset because of the striking by packing material 102, the pulling force of two adjacent walls to the juncture of two adjacent walls can be dispersed by the recess, make angle bead 101 be difficult to take place the fracture, thereby make angle bead 101 be difficult to drop, avoid influencing the protective effect to the two adjacent walls juncture of packing material 102 and packing box.

In order to make the corner protector 101 more flexible and less prone to cracking when subjected to stress, the top wall 1, the left side wall 2 and the right side wall 3 are made of an elastic material. In the present embodiment, the corner protector 101 is made of polypropylene foam. Even when the packed object 102 hits the corner protector 101, the corner protector 101 tends to be attached to the wall surface of the packed object 102, and the contact area between the inner wall of the corner protector 101 and the packed object 102 can be increased to increase the frictional force therebetween, so that the corner protector 101 is less likely to fall off.

In order to make the corner protector 101 have a better positioning effect at the junction between the two adjacent side walls of the packaged object 102, as shown in fig. 3, the groove is used for embedding the junction between the two adjacent wall surfaces of the packaged object 102, so that the two adjacent wall surfaces of the packaged object 102 can be clamped by the notch of the groove, and when the junction between the two adjacent wall surfaces of the corner protector 101 is impacted, the junction between the two adjacent wall surfaces of the packaged object 102 can be embedded into the groove more deeply and clamped more tightly by the notch of the groove, and the groove is less likely to be disengaged, so that the corner protector 101 is positioned at the junction between the two adjacent side walls of the packaged object 102 more firmly.

In order to equalize the structural strength of the two adjacent walls of the corner protector 101 and the area of the groove corresponding to the two adjacent walls for stress distribution, the groove is symmetrically disposed about a diagonal plane between the two adjacent walls. When two adjacent wall surfaces of the angle bead 101 are turned over relatively, the pulling force of the two adjacent wall surfaces to the junction of the two adjacent wall surfaces can be evenly distributed to the two symmetrically arranged sides of the groove wall, so that the impact action on the two sides of the groove wall is more balanced, and the angle bead 101 is more difficult to break from the groove.

Specifically, as shown in fig. 1, the grooves include a first groove 4 disposed at the boundary between the inner surfaces of the top wall 1 and the left side wall 2, a second groove 5 disposed at the boundary between the inner surfaces of the top wall 1 and the right side wall 2, and a third groove 6 disposed at the boundary between the inner surfaces of the left side wall 2 and the right side wall 3. The first recess 4 has a first connecting surface 43, a first plane 41, a second plane 42 and a second connecting surface 44 connected in sequence between the inner surface of the left side wall 2 and the inner surface of the top wall 1, and the first plane 41 and the second plane 42 are perpendicular to each other, and the first connecting surface 43 and the second connecting surface 44 are arranged in parallel. The second recess 5 has a third joint plane 53, a third plane 51, a fourth plane 52 and a fourth joint plane 54 which are connected in sequence between the inner surface of the top wall 1 and the inner surface of the right side wall 3, and the third plane 51 and the fourth plane 52 are perpendicular to each other, and the third joint plane 53 and the fourth joint plane 54 are arranged in parallel. The third recess 6 has a fifth connecting surface 63, a fifth plane 61, a sixth plane 62 and a sixth connecting surface 64 connected in sequence between the inner surface of the left sidewall 2 and the inner surface of the right sidewall 3, and the fifth plane 61 and the sixth plane 62 are perpendicular to each other, and the fifth connecting surface 63 and the sixth connecting surface 64 are arranged in parallel.

In this embodiment, as shown in fig. 4, the outer surface boundary of the top wall 1 and the left side wall 2 is subjected to an external force F₁Impact, external force F₁The force component F transmitted to the boundary between the first plane 41 and the second plane 42 is resolved into a force component F along the first plane 41₁₁And a force component F along a second plane 42₁₂(ii) a Then, the component force F₁₁The boundary between the first plane 41 and the first connection surface 43 is decomposed into a component force F perpendicular to the first connection surface 43₁₁₁And a force component F along the first connecting surface 43₁₁₂And component force F₁₂The force component F transmitted to the boundary between the second plane 42 and the second connection surface 44 is resolved into a force component F perpendicular to the second connection surface 44 again₁₂₁And a force component F along the second connection surface 44₁₂₂(ii) a Finally, the force component F along the first connection surface 43₁₁₂The interface transmitted to the first connecting surface 43 and the inner surface of the left side wall 2 is finally decomposed into a component force F perpendicular to the inner surface of the left side wall 2₁₁₂₁And a force component F along the inner surface of the left side wall 2₁₁₂₂To make an external force F₁The component force F acting on the left side wall of the article 102 after the three-stage decomposition of the first groove 4₁₁₂₁Is only F₁V 2/4, and a component force F along the second connection surface 44₁₂₂The interface transmitted to the second connection surface 44 and the inner surface of the top wall 1 is finally decomposed into a force component F perpendicular to the inner surface of the top wall 1₁₂₂₁And a force component F along the inner surface of the top wall 1₁₂₂₂To make an external force F₁The component force F acting on the top wall of the article 102 after the three-stage decomposition of the first groove 4₁₂₂₁Is only F₁The √ 2/4 (g) can reduce the force acting on the wall surface of the object 102, and make the cushioning effect of the corner protector 101 on the object 102 better and the protection effect better. In this embodiment, the process of resolving the external force by the second grooves 5 and the third grooves 6 is described in the foregoing process of resolving the external force by the first grooves 4.

As shown in fig. 3, the junction of the first plane 41 and the second plane 42At a distance d from the plane of the notch of the first groove 4₁The distance between the first connection surface and the second connection surface is d₂And d is₁Greater than d ₂1/2 of (1). The distance between the intersection of the third plane 51 and the fourth plane 52 and the plane in which the mouth of the second recess 5 lies is greater than 1/2 (not shown in the figures) which is the distance between the third connection plane 53 and the fourth connection plane 54. The distance between the intersection of the fifth plane 61 and the sixth plane 62 and the plane in which the mouth of the third recess 6 is located is greater than 1/2 (not shown in the figures) of the distance between the fifth connection surface 63 and the sixth connection surface 64.

In order to make the corner protector 101 more firmly positioned at the top corner of the packaged object 102 and have better protection effect on the top corner of the packaged object 102, as shown in fig. 1, the top wall 1, the left side wall 2 and the right side wall 3 of the corner protector 101 are provided with perforations 7 at the top corner formed by the intersection. As shown in FIG. 5, when an external force F is applied to the corner of the corner protector 101₂External force F upon impact₂Can be decomposed into a force component F in the direction along the boundary of the top wall 1 and the left side wall 2₂₁Component F in the direction of the intersection of the top wall 1 and the right side wall 3₂₂And a component force F in the direction of the boundary between the left side wall 2 and the right side wall 3₂₃The impact of squeezing on the packaged object 102 can be reduced, and the protective effect of the corner protector 101 on the top corner of the packaged object 102 is better. In this embodiment, the top corners of the packaged object 102 are not inserted into the perforations 7.

In order to make the outer surface of the corner protector 101 at the boundary between the wall surfaces smoother and to save the raw material of the corner protector 101, as shown in fig. 5, the outer surface of the boundary between the top wall 1 and the left side wall 2, the outer surface of the boundary between the top wall 1 and the right side wall 3, and the outer surface of the boundary between the left side wall 2 and the right side wall 3 are rounded. In actual production, more raw materials of the corner protector 101 can be saved by increasing the rounding angle and the radius.

Example 2

This example differs from example 1 in that: the distance between the intersection of the first plane 41 and the second plane 42 and the plane in which the mouth of the first recess 4 lies is 1/2 equal to the distance between the first connection face 43 and the second connection face 44. The distance between the intersection of the third plane 51 and the fourth plane 52 and the plane in which the mouth of the second recess 5 lies is 1/2 equal to the distance between the third connection plane 53 and the fourth connection plane 54. The distance between the intersection of the fifth plane 61 and the sixth plane 62 and the plane in which the mouth of the third recess 6 is situated is greater than 1/2 of the distance between the fifth connection surface 63 and the sixth connection surface 64.

Example 3

This example differs from example 1 in that: the distance between the intersection of the first plane 41 and the second plane 42 and the plane in which the mouth of the first recess 4 lies is 1/2 smaller than the distance between the first connection face 43 and the second connection face 44. The distance between the intersection of the third plane 51 and the fourth plane 52 and the plane in which the mouth of the second recess 5 lies is less than 1/2 of the distance between the third connection surface 53 and the fourth connection surface 54. The distance between the intersection of the fifth plane 61 and the sixth plane 62 and the plane in which the mouth of the third recess 6 is situated is less than 1/2 of the distance between the fifth connection surface 63 and the sixth connection surface 64.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.

Claims (10)

1. A corner protector for packaging, comprising:

a top wall (1) having a left side edge and a right side edge substantially perpendicular to each other;

a left side wall (2) extending vertically or obliquely downward from the left edge of the top wall (1);

the right side wall (3) extends downwards from the right edge of the top wall (1) vertically or obliquely and is connected with the left side wall (2);

it is characterized in that the preparation method is characterized in that,

at least one of the junction of the inner surfaces of the top wall (1) and the left side wall (2), the junction of the inner surfaces of the top wall (1) and the right side wall (3), and the junction of the inner surfaces of the left side wall (2) and the right side wall (3) is provided with a concave groove.

2. A corner protector for packages according to claim 1, characterised in that the top wall (1), the left side wall (2) and the right side wall (3) are made of a resilient material.

3. The corner protector for packaging as claimed in claim 1, wherein the groove is used for embedding the junction of two adjacent walls of the packaged object.

4. A corner protector for packaging as claimed in claim 3, in which the recesses are symmetrically disposed about a diagonal plane between the interfacing walls.

5. The corner protector for packaging according to claim 4, characterized in that the grooves comprise a first groove (4) arranged at the interface of the inner surfaces of the top wall (1) and the left side wall (2), a second groove (5) arranged at the interface of the inner surfaces of the top wall (1) and the right side wall (3), and a third groove (6) arranged at the interface of the inner surfaces of the left side wall (2) and the right side wall (3), wherein the first groove (4) is provided with a first plane (41) and a second plane (42) which are adjacent to each other, the second groove (5) is provided with a third plane (51) and a fourth plane (52) which are adjacent to each other, and the third groove (6) is provided with a fifth plane (61) and a sixth plane (62) which are adjacent to each other.

6. The corner protector according to claim 5, wherein the first recess (4) further has a first connecting surface (43) connecting the inner surface of the left side wall (2) and the first plane (41), and a second connecting surface (44) connecting the inner surface of the top wall (1) and the second plane (42), and wherein the first connecting surface (43) and the second connecting surface (44) are arranged in parallel; the second groove (5) is also provided with a third connecting surface (53) connecting the inner surface of the top wall (1) and the third plane (51), and a fourth connecting surface (54) connecting the inner surface of the right side wall (3) and the fourth plane (52), and the third connecting surface (53) and the fourth connecting surface (54) are arranged in parallel; the third groove (6) is also provided with a fifth connecting surface (63) for connecting the inner surface of the left side wall (2) with the fifth plane (61), and a sixth connecting surface (64) for connecting the inner surface of the right side wall (3) with the sixth plane (62), and the fifth connecting surface (63) and the sixth connecting surface (64) are arranged in parallel.

7. The corner protector according to claim 6, characterized in that the distance between the intersection of the first plane (41) and the second plane (42) and the plane in which the notch of the first recess (4) is located is less than or equal to 1/2 of the distance between the first connection face (43) and the second connection face (44), the distance between the intersection of the third plane (51) and the fourth plane (52) and the plane of the notch of the second groove (5) is less than or equal to 1/2 of the distance between the third connecting surface (53) and the fourth connecting surface (54), the distance between the intersection of the fifth plane (61) and the sixth plane (62) and the plane of the notch of the third groove (6) is smaller than or equal to 1/2 of the distance between the fifth connecting surface (63) and the sixth connecting surface (64).

8. The corner protector for packaging according to claim 7, wherein at least one of the angle between the first plane (41) and the second plane (42), the angle between the third plane (51) and the fourth plane (52), and the angle between the fifth plane (61) and the sixth plane (62) is an acute angle or a right angle.

9. The corner protector according to claim 6, characterized in that the distance between the intersection of the first plane (41) and the second plane (42) and the plane in which the notch of the first recess (4) is located is greater than 1/2 of the distance between the first connection face (43) and the second connection face (44), the distance between the intersection of the third plane (51) and the fourth plane (52) and the plane of the notch of the second groove (5) is greater than 1/2 of the distance between the third connecting surface (53) and the fourth connecting surface (54), the distance between the intersection of the fifth plane (61) and the sixth plane (62) and the plane of the notch of the third groove (6) is larger than 1/2 of the distance between the fifth connecting surface (63) and the sixth connecting surface (64).

10. A corner protector for packages according to any of claims 1-9, characterized in that the top wall (1), the left side wall (2) and the right side wall (3) meet to form a perforation (7) at the top corner.

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