CN222041330U - Ultra-thin packaging containers for logistics and distribution - Google Patents

Abstract

The utility model provides an ultrathin packaging container for logistics distribution, which comprises a box body with a containing cavity and a cover body capable of being covered to close the containing cavity. The box body is provided with the interior straight edge that upwards extends at the edge that holds the chamber opening, and the upper edge of interior straight edge is provided with the horizontal outward flat edge that extends. The edge of the cover body is provided with an upward extending vertical inner groove wall, the upper edge of the inner groove wall is provided with a transverse outward extending groove top wall, the inner straight edge is positioned at the outer side of the inner groove wall and inclines relative to the inner groove wall in a state that the cover body covers the box body, a jacking intersecting line which is elastically jacked is formed between the inner straight edge and the inner groove wall, and a separation area and a deformation self-locking area are respectively formed at two sides of the line. In the separation area, the inner groove wall and the inner straight edge are spaced and form an included angle by propping the intersecting line, and in the deformation self-locking area, at least one of the inner groove wall and the inner straight edge is elastically deformed and the inner groove wall and the inner straight edge are deformed and attached together. The scheme can further improve the sealing performance in compression deformation under the premise of ensuring the labor saving of uncovering.

Description

Ultra-thin packaging container for logistics distribution

Technical Field

The utility model relates to the technical field of ultrathin injection molding, in particular to an ultrathin packaging container capable of being used for logistics distribution.

Background

The sealing structure of the traditional food packaging container, such as a plane buckling structure of a foaming plastic container, a sealing buckling structure of a jogged groove of a plastic sucking container, a locking sealing structure of a thin-wall injection molding container and the like, has the defects of poor sealing and easy damage caused by impact. In order to solve the sealing problem and eliminate the lagging productivity, the aims of energy conservation, material reduction, environmental protection, sanitation and the like are fulfilled, the applicant initiates an ultrathin injection molding technology, and develops and applies the ultrathin injection molding technology to a food container packed by take-out. By utilizing the characteristics of large deformation and excellent elasticity of the ultrathin formed product, the applicant sequentially develops and designs iterative sealing structures such as lock catch sealing, ultrathin full sealing, included angle spring top sealing, double-groove deformation-resistant sealing and the like. The results are improved continuously, the sealing leakage problem of the takeaway delivery container is solved, and meanwhile the effects of easy opening and easy covering and convenient use are achieved.

The existing ultrathin injection molding technology is applied to manufacturing of packaging containers, the molding area is in the range of 50mm multiplied by 50mm to 300mm multiplied by 300mm (or the flow length ratio is more than or equal to 150), and the wall thickness can be less than 0.55mm, even to 0.3mm. However, due to the characteristic of ultra-thin wall thickness, the box body and box cover structure of the ultra-thin container and the manufacturing process thereof are generally difficult to adapt to the sealing structure of rigid conditions such as the conventional wall thickness packaging container, even due to the precision and errors of processing dimensions, the influence of various internal and external environmental factors existing in the processes of food production packaging, logistics distribution, consumption and use and the like are overlapped, and gaps are possibly generated between the box body and the box cover or the box cover is directly fallen off, so that sealing failure is caused.

Currently, ultra-thin injection molding technology is increasingly used for containers such as cutlery boxes. With further improvement of modern logistics distribution efficiency and food safety requirements, market and consumers put higher demands on the performances of ultrathin sealed food packaging containers in terms of deformation resistance, impact resistance, compression resistance, damage resistance, sealing and the like.

Disclosure of utility model

The utility model aims to provide an ultrathin packaging container for logistics distribution, so that the sealing performance of the packaging container in compression deformation is further improved on the premise of ensuring the labor-saving uncapping.

According to one aspect of the present utility model, the ultra-thin packaging container comprises:

The box body comprises a containing cavity with an upward opening, the edge of the opening is provided with an upward extending inner straight edge, and the upper edge of the inner straight edge is provided with a transverse outward extending flat edge; and

The cover body can be covered on the box body to seal the accommodating cavity, the edge of the cover body is provided with an upward extending inner groove wall, the upper edge of the inner groove wall is provided with a groove top wall which extends outwards transversely,

The inner groove wall is vertical, the inner straight edge is inclined relative to the inner groove wall, the inner groove wall is located at the inner side of the inner straight edge in the state that the cover body covers the box body, an elastic propping intersecting line is formed between the inner groove wall and the inner straight edge, a separation area and a deformation self-locking area are formed on two sides of the propping intersecting line respectively, the separation area is formed, the inner groove wall is separated from the inner straight edge, an included angle taking the propping intersecting line as a vertex is formed, and at least one of the inner groove wall and the inner straight edge is elastically deformed and is in deformation fit with the deformation self-locking area.

The cover body and the box body are deformed to a certain extent in the buckling process, the separation area with an included angle is reserved after buckling, and meanwhile, the deformation self-locking area is formed, a circle of sealing line is formed at the jacking intersecting line, the deformation self-locking area in deformation lamination not only forms another sealing area, but also plays a role in self locking, so that the cover body and the box body cannot be accidentally opened when the cover body and the box body are expected to be opened.

In some embodiments, the angle between the inner groove wall and the inner straight edge in the separation zone is 0.1 ° to 10 °, preferably 1.25 ° to 5 °.

In some embodiments, the box body is further provided with a downward extending outer straight edge at the outer edge of the flat edge, the cover body is further provided with a downward extending outer groove wall at the outer edge of the groove top wall, wherein in the state that the cover body covers the box body, the outer groove wall is located at the outer side of the outer straight edge and inclines relative to the outer straight edge, an elastic propping intersecting line is formed between the outer groove wall and the outer straight edge, a separation area and a deformation self-locking area are respectively formed at two sides of the propping intersecting line, the outer groove wall and the outer straight edge are spaced at each other in the separation area, and at least one of the outer groove wall and the outer straight edge is elastically deformed and is deformed and attached together in the deformation self-locking area.

In some embodiments, the separation and deformation self-locking regions formed between the inner groove wall and the inner straight edge are oriented with respect to the jacking intersection line in opposition to the separation and deformation self-locking regions formed between the outer groove wall and the outer straight edge.

In some embodiments, a limiting block is disposed on the inner side surface of the outer groove wall, and the lower edge of the outer straight edge abuts against the upper side of the limiting block.

In some embodiments, the lower edge of the outer straight edge extends laterally outwards and then extends vertically upwards to form a groove, and the lower edge of the outer groove wall is provided with an embedding part extending laterally outwards, and the embedding part is embedded into the groove in a state that the cover body covers the box body.

In some embodiments, a stopper is disposed on an inner side surface of an outer side wall of the groove, and the embedded portion is located below the stopper in a state in which the cover covers the case, and a projection of the stopper and a projection of the embedded portion at least partially overlap when viewed vertically. Preferably, the embedded part abuts against the lower side of the limiting block.

In some embodiments, one of the outer straight edge and the outer groove wall extends at least partially vertically and the other of the outer straight edge and the outer groove wall is inclined outwardly at least partially as it extends downwardly so as to cooperatively form the separation zone, the jacking intersection line and the deformation self-locking zone.

In some embodiments, the deformation self-locking region is straight in a vertical cross section of the packaging container after the packaging container is capped in place.

In some embodiments, the deformation self-locking region has a width of 0.5-10mm.

According to the scheme provided by the utility model, the following beneficial effects can be obtained:

1. The deformation self-locking area mutually attached parts have the acting force of the inner and outer phase spring tops, and the self-locking effect can be realized so as to prevent the deformation self-locking area from separating from the deformation self-locking area. Particularly when the external extrusion force is applied, the attached parts can move along with deformation due to good elastoplasticity of the ultrathin wall thickness, but are always propped and attached together, so that a durable sealing effect is realized. In this way, besides a circle of sealing line is formed at the jacking intersecting line, not only is another sealing area formed in the deformation self-locking area of deformation lamination, but also the self-locking function is achieved, so that the cover body and the box body cannot be accidentally opened when the cover body and the box body are expected to be opened. Considering that different ultrathin wall thicknesses can influence the elastic performance, the elastic top attaching self-locking strength of the deformation self-locking region can be further enhanced through the proper smaller thin wall thickness; in addition, the outer cover body and the box body can also be provided with different wall thicknesses, so that the deformation area and the self-locking strength are influenced. The design reduces the processing precision requirement of the utility model, thereby the processing is easier and the cost is obviously reduced.

2. The provision of the angle makes it possible to make the vertical component of the external pressing force smaller than the vertical component of the friction force generated based on the pressing force, because the cover body can be prevented from being undesirably opened at the time of pressing, maintaining the seal. When the included angle is smaller, the cover body and the box body are easier to embed deeper, and the formed self-locking area is wider, so that the larger the jacking force is, the better the sealing is; when the included angle is set to be larger, the cover body and the box body are embedded shallower, the formed self-locking area is narrower, the jacking force is reduced, and the cover body and the box body are easy to open and close. Namely, the self-locking force can be increased or decreased according to the requirements through different deformation self-locking widths.

3. In addition, the relative inclination mode of the inner straight edge and the inner groove wall is reasonably arranged, so that the deformation joint part of the cover can be higher or lower, unnecessary friction force during cover opening can be obviously reduced, and the cover opening action is more labor-saving.

4. The utility model improves the included angle ejection into deformation lamination by utilizing the included angle ejection sealing line between the inner straight edge of the box body of the container and the inner side wall of the cover body so as to form a sealed self-locking area, and utilizes the limited ejection deformation space in the self-locking area and the lamination of the inner straight edge and the double wall thickness of the inner groove wall, thereby increasing the rigidity of the key sealing component on the ultrathin basis, realizing self-locking while sealing, enhancing the deformation resistance, impact resistance and compression resistance of the container and achieving the strict sealing effect.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present utility model, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. It will be appreciated by persons skilled in the art that the drawings are intended to schematically illustrate preferred embodiments of the utility model, and that the scope of the utility model is not limited in any way by the drawings, and that the various components are not drawn to scale. Wherein,

FIG. 1 is a vertical cut-away view of a container according to a first embodiment of the utility model;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a vertical cut-away view of a container according to a second embodiment of the utility model;

FIG. 4 is an enlarged view of part B of FIG. 3;

Fig. 5 is a modification of fig. 4;

FIG. 6 is a vertical cut-away view of a container according to a third embodiment of the utility model;

FIG. 7 is an enlarged view of a portion C of FIG. 6;

Fig. 8 and 9 show modifications of fig. 7.

Detailed Description

Specific embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. What has been described herein is merely a preferred embodiment according to the present utility model, and other ways of implementing the utility model will occur to those skilled in the art on the basis of the preferred embodiment, and are intended to fall within the scope of the utility model as well.

The present utility model provides a packaging container for logistics distribution (hereinafter referred to as a container) which can be used for containing food or the like holding liquid or solid during logistics distribution. In particular, the container according to the present utility model may be made by an ultra-thin injection molding process using a material having a certain elasticity. The ultra-thin injection molding process refers to the production of molded parts with wall thickness smaller than 0.5mm (even smaller than 0.35 mm), wall thickness precision tolerance +/-0.05 mm and molding area of 10 x 600 mm ² by injection molding, wherein the numerical ratio of the ultra-thin molded thickness to the molding area is as follows: the product obtained by the molding process technology has the characteristics of ultrathin material reduction, uniform compression resistance, excellent elastic plastic property and the like, and meets the requirements of environment-friendly and energy-saving green process technology and green utility model.

The container according to the utility model is described in detail below with reference to the accompanying drawings.

Fig. 1 shows a container 1 according to a preferred embodiment of the utility model, comprising a box 11 and a lid 12. The case 11 has a housing cavity 113 defined by a case side wall 111 and a case bottom wall 112. In the following description, reference will be made to the accommodation chamber 113, for example, inwardly in a direction toward the accommodation chamber 113 and outwardly in a direction away from the accommodation chamber 113. The receiving chamber 113 forms an opening at the top communicating with the outside. The user may put food into the receiving cavity 113 through the opening or take out food from the receiving cavity 113. The cover body 12 can be matched with the box body 11 and is covered on the opening of the containing cavity 113 so as to isolate the containing cavity 113 from the external environment, and the sealing effect is realized.

Fig. 2 shows a structure in which both the case 11 and the cover 12 are engaged when they are closed. Specifically, the case 11 is provided with an upwardly extending inner straight edge 114 at the opening edge of the accommodation chamber 113, and the upper edge of the inner straight edge 114 is provided with a laterally outwardly extending flat edge 115. The edge of the cover 12 is provided with an upwardly extending inner trough wall 121 and the upper edge of the inner trough wall 121 is provided with a laterally outwardly extending trough top wall 122.

The inner groove wall 121 is at least partially vertical, and in a state where the lid 12 is covered on the case 11, the inner groove wall 121 is located inside the inner straight edge 114, and both are disposed obliquely. By "sloped" is meant that the inner groove wall 121 and the inner straight edge 114 are not parallel and form an included angle when closed. Further, the inner sidewall 121 and the inner straight edge 114 are at least partially resiliently held together to form a resiliently held holding intersection L. And a separation area S and a deformation self-locking area D are respectively formed at two sides of the jacking intersecting line L. In the separation area S, the inner sidewall 121 and the inner straight edge 114 are spaced apart from each other, and an included angle α is formed by taking the top intersecting line L as a vertex. In the deformation self-locking region D, at least one of the inner groove wall 121 and the inner straight edge 114 is elastically deformed, and the two are deformed and fit together.

According to the above scheme, the two smooth curved surfaces of the inner groove wall 121 and the inner straight edge 114 have the acting force of inner and outer phase spring top at the mutually attached part of the deformation self-locking region D. The inner groove wall 121 is embedded into the space surrounded by the inner straight edge 114 after being sprung against the inner straight edge 114, and the inner groove wall 121 and the inner straight edge 114 are mutually extruded, so that the self-locking effect can be realized, and the self-locking effect can be realized, so that the inner groove wall and the inner straight edge are prevented from being separated. In particular, when the container 1 is subjected to an external pressing force, the portions that are in contact with each other will move with deformation due to the excellent elastoplasticity of the ultra-thin wall thickness, but will always be in contact with each other by being held against each other, achieving a good sealing effect.

In addition, the angle α between the inner groove wall 121 and the inner straight edge 114114 in the separation region S is set to 0.1 ° to 10 °, preferably 1.25 ° to 5 °. The angle is set such that, when the container 1 is subjected to a pressing force (e.g., a force perpendicular to the inner straight edge 114), the pressing force acts on the inner groove wall 121 in the vertical direction at a smaller component than the friction force generated between the inner groove wall 121 and the inner straight edge 114 based on the pressing force. Thereby, the cover 12 can be prevented from being undesirably opened by the external pressing force. The effect of preventing the cover from being opened is more obvious by taking the gravity of the cover body 12 into consideration. Thus, the container according to the present utility model has excellent sealing effect and capability of preventing accidental opening of the cover.

The capping process of the cap 12 is as follows. When the cover 12 is snapped into the opening of the receiving cavity 113, the inner groove wall 121 first contacts the inner straight edge 114, and the position where the two first contact forms the holding intersection line L, which has already entered the sealed state. As the cover 12 moves further downward, the inner groove wall 121 and the inner straight edge 114 further push against and squeeze at a position located at one side of the pushing intersection line L, so that the two are elastically deformed and attached together, and enter a self-locking state. Wherein, the separation area S, the propping intersecting line L and the deformation self-locking area D are formed into a substantially Y-shaped structure when observed in the vertical section, namely, the deformation self-locking area D is formed into a flat and straight fitting wall surface in the vertical section. The self-locking state not only can effectively prevent the cover body and the box body from being separated unintentionally, but also forms a more effective sealing area. Preferably, in some embodiments, the inner trough wall 121 may be disposed vertically, while the inner straight edge 114 is disposed inclined upwardly and outwardly. The cover body and the box body are deformed to a certain extent in the buckling process, the separation area with an included angle is reserved after buckling, and meanwhile, the deformation self-locking area is formed, a circle of sealing line is formed at the jacking intersecting line, the deformation self-locking area in deformation lamination not only forms another sealing area, but also plays a role in self locking, so that the cover body and the box body cannot be accidentally opened when the cover body and the box body are expected to be opened.

The smaller the included angle alpha between the inner groove wall 121 and the inner straight edge 114 is, the deeper the inner groove wall 121 can be embedded toward the bottom of the accommodating cavity 113, so that a deformation self-locking region D with a larger size can be formed. The greater the holding force between the inner groove wall 121 and the inner straight edge 114 in the deformation self-locking region D, the tighter the cover 12 is. In contrast, when the included angle α is larger, the fitting of the inner sidewall 121 is shallower, so that the deformed self-locking region D of smaller size is formed, the holding force is relatively smaller, and the lid 12 can be opened more easily. This allows for different angle designs to be selected and the self-locking performance and ease of opening of the container to be adjusted according to different requirements of different usage scenarios (e.g., product packaging during production, logistics distribution, or consumer use) for the strength of the self-locking seal of the container and ease of opening the lid. Preferably, the width of the deformation self-locking region D is set to 0.5-10mm. It will be appreciated that the deformation-locking region D is circumferentially encircling the container, and thus the width herein refers to the dimension of the deformation-locking region D along the generally vertical direction.

Preferably, the inner straight edge 114 and/or the inner trough wall 121 are inclined in such a manner as to incline outwardly in the vertical direction. During the opening process, once the inner straight edge 114 and the inner straight edge 121 are separated from contact in the deformation self-locking region D, as the cover 12 moves upward, the inner groove wall 121 and the inner straight edge 114 are further and further apart in the lateral direction, and even if the cover 12 is not completely removed from the opening of the case 11, and the inner groove wall 121 is still located within the range of the inner straight edge 114, the inner groove wall 121 and the inner straight edge 114 are no longer in contact. In this way, unnecessary friction force during the uncovering can be remarkably reduced, and the uncovering action is more labor-saving.

In the illustrated embodiment, the inner straight edge 114 has a larger inclination angle, and a separation region S, an elastic propping intersecting line L and a deformation self-locking region D are respectively formed between the inner straight edge 114 and the inner groove wall 121 vertically from top to bottom. It will be appreciated that in other embodiments, the inclination angle of the inner sidewall 121 may be larger, and the deformation self-locking region D, the elastic propping intersecting line L and the separation region S are respectively formed between the inner straight edge 114 and the inner sidewall 121 vertically from top to bottom. Further preferably, one of the inner straight edge 114 and the inner sidewall 121 may be provided to extend vertically, and the other to extend obliquely.

Fig. 3 and 4 show a container 2 according to another preferred embodiment of the utility model, which is substantially identical in structure to the container 1 according to the embodiment shown in fig. 1, wherein parts of similar structure or function are given the same or similar reference numerals. The difference is that in the container 2 the outer edge of the flat rim 215 of the box 21 is provided with a downwardly extending outer straight rim 216. The outer edge of the channel top wall 222 of the cover 22 is provided with a downwardly extending outer channel wall 223. In this way, the inner straight edge 214, the flat edge 215 and the outer straight edge 216 of the box 21 form a box mouth complex edge. The inner groove wall 221, the groove top wall 222, and the outer groove wall 223 of the cover 22 constitute an annular groove with a downward opening.

In the state that the cover 22 is covered on the box body 21, the annular groove is sleeved and buckled on the box mouth complex edge, namely the outer groove wall 223 is positioned outside the outer straight edge 216. The manner of fitting the inner groove wall 221 and the inner straight edge 214 is the same as the manner of fitting the inner groove wall 121 and the inner straight edge 114 in the embodiment shown in fig. 1. In addition, the outer straight edge 216 extends downward and is inclined outward at the position of at least the end portion, and abuts against the inner side surface of the outer groove wall 223. The inner side surface of the outer groove wall 223 can be further provided with a limiting block 224 protruding inwards, and the end part of the outer straight edge 214 is propped against the upper part of the limiting block 224 or directly propped against the limiting block 224, so that the locking and anti-falling effects are realized.

Although not shown in the figures, it is understood that the same or similar fit between the outer straight edge 216 and the outer groove wall 223 as between the inner straight edge 214 and the inner groove wall 221 may be formed with a sufficient length. That is, the outer straight edge 216 and the outer groove wall 223 are obliquely arranged, and form an included angle when being covered. And, the outer straight edge 216 and the outer groove wall 223 are at least partially resiliently held together, forming a resiliently held holding intersection. And a separation area and a deformation self-locking area are respectively formed at two sides of the jacking intersecting line. Wherein, in the separation region, the outer straight edge 216 and the outer groove wall 223 are spaced apart, and an included angle is formed by taking the top-holding intersecting line as the vertex. And at least one of the outer straight edge 216 and the outer groove wall 223 is elastically deformed in the deformation self-locking region, and the two are deformed and fit together.

In the case of the above-mentioned cooperation between the outer straight edge and the outer groove wall and between the inner straight edge and the inner groove wall, the orientation of the separation zone and the deformation self-locking zone with respect to the jacking intersection line is preferably opposite at these two cooperation points. As shown in fig. 4, a separation area S, an elastic propping intersecting line L and a deformation self-locking area D are respectively formed between the inner straight edge 214 and the inner groove wall 221 vertically from top to bottom. And a deformation self-locking region D, a jacking intersecting line L of elastic jacking and a separation region S are respectively formed between the outer straight edge 216 and the outer groove wall 223 vertically from top to bottom.

Fig. 5 shows a modification of the embodiment shown in fig. 3. However, the modification of fig. 5 omits the stopper, and instead, concave-convex structures are respectively provided on the inner side surface of the outer straight edge 216a and the outer side surface of the outer groove wall 223a, and the outer straight edge 216a and the outer groove wall 223a are attached to each other during the covering process, so that the concave-convex structures are matched to realize the locking function. Preferably, the outer straight edge 216a and/or the outer groove wall 223a have a substantially uniform wall thickness and are curved to provide a relief structure. That is, for a concave structure, it appears as a convex structure on the opposite side; while for a convex structure it appears as a concave structure on the opposite side. Preferably, it will be appreciated that the outer straight edge 216a and/or the outer groove wall 223a may also have a non-uniform wall thickness. For example, the convex or concave structure is formed by additionally protruding outwardly or recessing inwardly based on the wall thickness of the outer straight edge 216a and/or the outer groove wall 223a itself. Further, it is preferable that the concave-convex structure is formed in an arc shape so as to have a smoothly transitive edge, facilitating the engagement of both at the time of closing and the disengagement at the time of opening. Except for this, the modification shown in fig. 5 has substantially the same structure as the embodiment shown in fig. 3.

Fig. 6 and 7 show a container 3 according to a further preferred embodiment of the utility model, which is substantially identical in structure to the container 2 according to the embodiment shown in fig. 3, wherein parts of similar structure or function are given the same or similar reference numerals. The difference is that in the container 3, the lower end of the outer straight edge 316 does not bear against the inner side of the outer groove wall 323, but extends beyond the lower edge of the outer groove wall 323 and continues laterally outwardly at the lower edge of the outer straight edge 316 by a predetermined dimension and then continues vertically upwardly again to form the groove 317. In this way, the inner straight edge 314, the flat edge 315, the outer straight edge 316 form an inverted U-shape with the opening downward, the groove 317 forms a positive U-shape with the opening upward, and the two parts together form a composite staggered structure of the box 31. The case 31 thus has good deformation resistance at the position where it cooperates with the cover 32. This is more advantageous for the safety of the container during transport and after the food is placed. The wall thickness of the container can be reduced further to some extent while retaining sufficient resistance to deformation.

Preferably, referring to the modification shown in fig. 8, the inner side surface of the outer side wall of the groove 317a is provided with a stopper 318a protruding inward. The lower edge of the outer groove wall 323a may also be provided with a laterally outwardly extending inset 324a. In a state where the cover is covered to the case, the embedded portion 324a is embedded in the groove 317a and is located below the stopper 318a. The embedded portion 324a may be supported on the lower side of the stopper 318a or may be spaced from the stopper 318a, but the stopper 318a and the embedded portion 324a at least partially overlap when viewed in the vertical direction. Therefore, the stopper 318a can function as a lock catch for the insertion portion 324a. Fig. 9 shows a further variant on the basis of fig. 8, in which the radially outer side of the insertion portion 324b is provided with a latching wall 325b extending obliquely upwards and outwards. Wherein, the upper edge of the latch wall 325b props against the inner side surface of the outer side wall of the groove 317b, which can further improve the deformation resistance. In addition, the extending direction of the locking wall 325b enables the locking wall to automatically deform and avoid under the extrusion action of the limiting block 318b in the closing process, so that the closing is facilitated. In the closed state, the stopper 318b can also prevent the latch wall 325b from moving upwards, thereby playing a role in preventing the latch from falling off.

As in the embodiment shown in fig. 3, the container 3 also forms the same or similar fit between the inner straight edge 314 and the inner slot wall 321 as between the inner straight edge 214 and the inner slot wall 221 of the container 2. On this basis, further, the container 3 also forms a fit between the outer straight edge 316 and the outer groove wall 323 in the same or similar manner as between the inner straight edge 314 and the inner groove wall 321. That is, the structure and features of the container 2 according to the embodiment shown in fig. 3 can be applied to the container 3 according to the embodiment shown in fig. 6, except that the lower end of the outer straight edge is abutted against the inner side surface of the outer groove wall and the inner side surface of the outer groove wall is provided with a stopper.

Under the same conditions, the wall thickness of the ultrathin container is selected to be smaller, and the self-locking strength can be stronger due to the better elastic performance of the ultrathin container.

The foregoing description of various embodiments of the utility model has been presented for the purpose of illustration to one of ordinary skill in the relevant art. It is not intended that the utility model be limited to the exact embodiment disclosed or as illustrated. As above, many alternatives and variations of the present utility model will be apparent to those of ordinary skill in the art. Thus, while some alternative embodiments have been specifically described, those of ordinary skill in the art will understand or relatively easily develop other embodiments. The present utility model is intended to embrace all alternatives, modifications and variations of the present utility model described herein and other embodiments that fall within the spirit and scope of the utility model described above.

Claims (10)

1. An ultra-thin packaging container for logistics distribution, the ultra-thin packaging container comprising:

The box body (11), the box body (11) comprises a containing cavity (113) with an upward opening, an upward extending inner straight edge (114) is arranged at the edge of the opening, and a transverse outward extending flat edge (115) is arranged at the upper edge of the inner straight edge (114); and

The cover body (12), the cover body (12) can cover the box body (11) to seal the containing cavity (113), the edge of the cover body (12) is provided with an upward extending inner groove wall (121), the upper edge of the inner groove wall (121) is provided with a groove top wall (122) extending outwards transversely,

The inner trough wall (121) is vertical, the inner straight edge (114) inclines relative to the inner trough wall (121), the inner trough wall (121) is located at the inner side of the inner straight edge (114) in the state that the cover body (12) covers the box body (11), a jacking intersecting line (L) which is elastically jacked is formed between the inner trough wall (121) and the inner straight edge (114), a separation area (S) and a deformation self-locking area (D) are formed at two sides of the jacking intersecting line (L), the separation area (S) is formed, the inner trough wall (121) and the inner straight edge (114) are separated, an included angle with the jacking intersecting line (L) as an apex is formed, at least one of the inner trough wall (121) and the inner straight edge (114) is elastically deformed, and the inner trough wall and the inner straight edge (114) are deformed and attached together.

2. Ultra-thin packaging container according to claim 1, characterized in that in the separation zone (S) the angle between the inner trough wall (121) and the inner straight edge (114) is 0.1 ° to 10 °.

3. The ultra-thin packaging container according to claim 1, wherein the box body is further provided with a downwardly extending outer straight edge (216) at the outer edge of the flat edge, the cover body is further provided with a downwardly extending outer groove wall (223) at the outer edge of the groove top wall,

Wherein, in the state that the lid closes the box body, outer cell wall (223) are located the outside of outer straight edge (216) and for outer straight edge (216) slope, outer cell wall (223) with form elasticity between outer straight edge (216) and hold intersecting line (L) to form separation district (S) and deformation self-locking zone (D) respectively in the both sides of holding intersecting line (L) separation district (S), outer cell wall (223) with outer straight edge (216) are spaced apart in deformation self-locking zone (D), outer cell wall (223) with outer straight edge (216) at least one elastic deformation and both deformation laminating together.

4. -Ultra-thin packaging container according to claim 3, characterized in that the orientation of the separation zone and the deformation self-locking zone formed between the inner groove wall and the inner straight edge with respect to the jacking intersection line is opposite to the orientation of the separation zone (S) and the deformation self-locking zone (D) formed between the outer groove wall (223) and the outer straight edge (216) with respect to the jacking intersection line (L).

5. -Ultra-thin packaging container according to claim 3, characterized in that the inner side of the outer groove wall (223) is provided with a stopper (224), the lower edge of the outer straight edge (216) being abutted against the upper side of the stopper (224).

6. A packaging container as claimed in claim 3, characterized in that the lower edge of the outer straight edge extends laterally outwardly and then vertically upwardly to form a recess (317), the lower edge of the outer groove wall being provided with a laterally outwardly extending insert portion which, in the state of the cover body covering the box body, is inserted into the recess (317).

7. The ultra-thin packaging container according to claim 6, characterized in that the inner side of the outer side wall of the recess (317) is provided with a stopper, the insert portion being located below the stopper in a state in which the lid body covers the case, and the projection of the stopper at least partially overlapping the projection of the insert portion as seen in the vertical direction.

8. Ultra-thin packaging container according to claim 4, characterized in that one of the outer straight edge (216) and the outer groove wall (223) extends at least partly vertically and the other of the outer straight edge (216) and the outer groove wall (223) is inclined outwards at least partly with the downward extension so as to cooperate to form the separation zone (S), the holding intersection line (L) and the deformation self-locking zone (D).

9. Ultra-thin packaging container according to claim 1, characterized in that the deformation self-locking zone (D) is straight in the vertical section of the packaging container after the closure in place.

10. Ultra-thin packaging container according to any one of claims 1 to 9, characterized in that the deformation self-locking zone (D) has a width of 0.5-10mm.