Sealing structure of a packaging box

Abstract

The utility model provides a sealing structure of a packaging box, which relates to the technical field of food packaging boxes and solves the technical problem that the packaging box is not tightly sealed and is easy to leak. The sealing structure of the packaging box includes a box body, a box cover, a card edge, and a card slot; the card slot is arranged around the bottom of the box cover, and the card edge is arranged around the top of the box body; the card slot and the card edge are tightly fitted; and the inner edge of the top of the box body to the card edge is an oblique flow surface. The utility model arranges the card edge on the box body, thereby forming an upward protruding mechanism at the edge of the box body. When the packaging box is tilted, the protruding structure protrudes from the top of the box body cavity, plays a blocking role, increases the overflow blocking effect, forms a secondary seal, and has a better sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging boxes, in particular to a sealing structure of a packaging box. Background Art

[0002] As people's living standards improve, more people like to eat in restaurants or order takeout. When they need to take food home, packaging boxes play a very important role. Packaging boxes are a must-have item for modern commodities, especially for food. Packaging boxes can not only ensure that the food is not damaged, but also ensure the safety of the food in the box and ensure the hygiene of the food. For food with soup or strong smell, the sealing of the packaging box must be good, otherwise it is easy to cause soup leakage or smell overflow during transportation or carrying.

[0003] In order to solve the sealing problem of the packaging box, the prior art provides a sealed transparent square box, including a box body and a box cover arranged on the top of the box body, the top of the box body is provided with card slots all around, and the bottom of the box cover is provided with card edges adapted to the card slots all around, and the card edges are inserted into the card slots to realize the connection between the box cover and the box body.

[0004] The applicant has found that the prior art has at least the following technical problems:

[0005] The existing box body is provided with a card slot, and the box cover is provided with a card edge sealing structure. When the packaging box is tilted, there is still a problem of liquid leakage and a poor seal. Utility Model Content

[0006] The utility model aims to provide a sealing structure for a packaging box, so as to solve the technical problem that the packaging box is not tightly sealed and is easy to leak in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a sealing structure of a packaging box, comprising a box body, a box cover, a card edge, and a card slot;

[0009] in:

[0010] The card slots are arranged around the bottom of the box cover;

[0011] The card edge is arranged around the top of the box body;

[0012] The clamping slot and the clamping edge are tightly fitted.

[0013] Furthermore, the cross section of the card edge is a double-drum gourd-shaped structure; the cross section shape of the card slot is the same as the cross section shape of the card edge.

[0014] Furthermore, the cross section of the card edge is trapezoidal, with the large end at the end; the cross section of the card slot is adapted to the cross section of the card edge.

[0015] Furthermore, when the cross-section of the card edge is a double-drum gourd-shaped structure, the number of the card edge is one; when the cross-section of the card edge is a trapezoid, the number of the card edges is one or two, and when the number of the card edges is two, they are arranged side by side.

[0016] Furthermore, the two card edges have different heights, and the height of the card edge closer to the inner side is greater than the height of the card edge closer to the outer side.

[0017] Furthermore, the edge of the box cover is provided with an upward-folding handle, and the edge of the box body is provided with a downward-folding handle.

[0018] Furthermore, the handles are respectively located at two end corners of the same side of the box cover and the box body; or, the handles are respectively located at two diagonally opposite corners of the box cover and the box body.

[0019] Furthermore, the specifications of the handle located on the box cover are larger than those of the handle located on the box body.

[0020] Furthermore, when the number of the clamping edges is one, an oblique flow surface is formed between the inner edge of the top of the box body and the clamping edge.

[0021] The sealing structure of the packaging box provided by the utility model is that a card edge is arranged on the box body, so that an upward protrusion mechanism is formed at the edge of the box body, and a primary sealing effect is achieved through the tight fit between the card edge and the card slot. However, since the packaging box is made of environmentally friendly PET material and is relatively soft, it is inevitable that the sealing effect between the card edge and the card slot will be reduced due to deformation and the like during use. The utility model arranges the card edge on the box body. When the packaging box is tilted, the protrusion structure protrudes from the top of the inner cavity of the box body, so the card edge functions like a wall and can play a blocking role. Food overflow needs to rush through the card edge before it can overflow to the vicinity of the outer edge of the box body, thereby increasing the overflow blocking effect and forming a secondary seal. Compared with the structure in the prior art in which the card edge is arranged on the box cover, the sealing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is the front view of the packaging box of the utility model;

[0024] Figure 2 It is a structural schematic diagram of an embodiment of a card edge in the sealing structure of the packaging box of the utility model;

[0025] Figure 3 It is a structural schematic diagram of another embodiment of the card edge in the sealing structure of the packaging box of the utility model;

[0026] Figure 4 It is a top view of an embodiment of a box body in a packaging box of the utility model.

[0027] In the figure, 1, box body; 2, box cover; 3, card edge; 4, card slot; 5, handle. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0029] like Figure 1 As shown, the utility model provides a sealing structure of a packaging box, comprising a box body 1, a box cover 2, a card edge 3, and a card slot 4; wherein:

[0030] The box body 1 has a containing cavity therein, and the box cover 2 is a flat cover structure with an avoidance cavity therein. When the box cover 2 is closed on the box body 1, a sealed cavity is formed between the two to prevent fluid food from leaking.

[0031] It should be noted here that both the box body 1 and the box body 2 are transparent and made of environmentally friendly PET material.

[0032] The card slot 4 is arranged around the bottom of the box cover 2;

[0033] The card edge 3 is arranged around the top of the box body 1;

[0034] The card slot 4 and the card edge 3 are tightly fitted.

[0035] In this embodiment, the top outer edge of the box body 1 extends vertically outward to form a side platform, the bottom outer edge of the box cover 2 extends vertically outward to form a side platform, and the card slot 4 and the card edge 3 are both arranged in the side platform.

[0036] In the prior art, the card edge 3 is arranged at the bottom of the box cover 2, and the card groove 4 is arranged at the top of the box body 1. Although this structure can achieve a certain sealing effect, since the box body 1 and the box cover 2 are both relatively soft and easy to deform, the primary seal of the card edge 3 and the groove 4 still has the possibility of leakage. Moreover, when the packaging box is tilted, since the groove 4 is located at the top edge of the box body 1 and is concave downward, it is easy to cause liquid to overflow to the bottom of the card edge 3. If there is a gap between the bottom of the card edge 3 and the bottom of the card groove 4 in the case of deformation, it is easy for the liquid to overflow to the outside of the card edge 3, increasing the risk of leakage.

[0037] In the present invention, the card edge 3 is arranged on the box body 1, so that an upward protrusion mechanism is formed at the edge of the box body 1, and a primary sealing effect is achieved through the tight fit between the card edge 3 and the card slot 4. However, since the packaging box is made of environmentally friendly PET material and is relatively soft, it is inevitable that the sealing effect between the card edge 3 and the card slot 4 will be reduced due to deformation and the like during use. The present invention arranges the card edge 3 on the box body 1. When the packaging box is tilted, since the protrusion structure protrudes from the top of the inner cavity of the box body 1, the card edge 3 functions like a wall and can play a blocking role. If food overflows, it needs to rush through the card edge 3 before it can overflow to the vicinity of the outer edge of the box body 1, thereby increasing the overflow blocking effect and forming a secondary seal. Compared with the structure in the prior art in which the card edge 3 is arranged on the box cover 2, the sealing effect is better.

[0038] like Figure 2 As shown, further, in order to further improve the sealing effect, as an optional embodiment of the present utility model, the cross section of the card edge 3 is a double-drum gourd-shaped structure;

[0039] Furthermore, the cross-sectional shape of the card slot 4 is the same as the cross-sectional shape of the card edge 3 .

[0040] Through this structural setting, not only the contact area between the card edge 3 and the card slot 4 is increased, the sealing effect is improved, but also further overflow prevention can be achieved. The two drum shapes increase the difficulty of overflow. In addition to increasing the height direction, the overflow difficulty in the horizontal direction is also increased, and a curved contact surface is formed between the card edge 3 and the card slot 4, which is not conducive to the flow of fluid and increases the flow resistance.

[0041] It should be noted here that when the cross-section of the card edge 3 is a double-drum gourd-shaped structure, the number of card edges 4 is one. The reason for setting only one is that, in addition to believing that one gourd-shaped card edge 3 can have a sufficient sealing effect, the difficulty of processing and the convenience in actual use are also taken into consideration.

[0042] Further, such as Figure 3As shown, in order to further improve the sealing effect, as another optional embodiment of the present invention, the cross-section of the card edge 3 is trapezoidal, and the large end is at the end, that is, the connection between the card edge 3 and the box body 1 is the small end; the cross-sectional shape of the card slot 4 is adapted to the cross-sectional shape of the card edge 3.

[0043] Through this structural setting, not only the contact area between the card edge 3 and the card slot 4 is increased, the sealing effect is improved, but also it can further prevent overflow. The specifications of the large head end are larger than the small head end, and the inclined surface between the large head end and the small head end forms a horizontal extension effect. The liquid can flow downward under the action of gravity, but the flow in the horizontal direction needs to overcome more resistance, which increases the difficulty of overflow. In addition to increasing the height direction, the difficulty of overflow in the horizontal direction is also increased, and a non-direct contact surface is formed between the card edge 3 and the card slot 4, which is not conducive to the flow of fluid and increases the circulation resistance.

[0044] Moreover, in order to further increase the resistance, the inclined surface of the trapezoid can be set to be a curved surface that is slightly convex outward.

[0045] Further, when the cross section of the card edge 3 is a trapezoid, the number of the card edge 3 can be one or two, and when the number of the card edge 3 is two, they are arranged side by side.

[0046] The packaging box in the present invention only considers the sealing effect during transportation, and does not consider the repeated use effect after being transported to the site and disassembled. Therefore, there is a certain possibility that the card edge 3 will be deformed after disassembly and cannot be used. However, since the technical problem solved by the present invention is the problem of poor sealing of the packaging box, the problem of non-reusability is not considered here, and it can be improved according to the actual use effect when the products produced by our company are used in the future.

[0047] Furthermore, in order to further ensure the sealing effect, when two card edges 3 are provided, the heights of the two card edges 3 may be different, for example, the height of the card edge 3 close to the inner side (close to the inner cavity of the box body 1) is greater than the height of the card edge 3 outside.

[0048] Through this structural setting, the blocking and sealing effect of the inner card edge 3 with a large amount of fluid is first ensured. Even if a small amount of fluid overflows to the outside of the first card edge 3, due to its small amount, only the shorter card edge 3 can be used for blocking and sealing. Under the premise of ensuring the sealing effect as much as possible, it can also save materials, reduce costs and reduce unnecessary expenses.

[0049] like Figure 1 and Figure 4 As shown, further, in order to facilitate the disassembly between the box body 1 and the box cover 2, an upward-turned handle 5 is provided on the edge of the box cover 2, and a downward-turned handle 5 is provided on the edge of the box body 1.

[0050] By flipping the handles up and down, a sufficient space is left between the two handles, which is convenient for direct grasping and disassembly. Compared with the structure in the prior art in which the two handles are fitted together when the packaging box is packaged, it is more convenient to grasp, and there is no need to put fingers into the narrow seal between the other handles to grasp the handles, which is more convenient and quicker to use.

[0051] Furthermore, considering that in daily use, when the sealing structure of the packaging box is well sealed, the box cover 2 is not easy to be removed from the box body 1, and when one corner of the box body 1 and the box cover 2 is opened, the other corners are often still in a connected and sealed state. The existing method is to slowly pull the box apart by pressing or pushing and pulling other positions of the packaging box with hands. This disassembly method is not easy to push, pull or press because the edges of the box body 1 and the box cover 3 are narrow, which may cause the problem of cutting hands and inconvenience in pushing and pulling. Therefore, the utility model arranges the handles 5 at the two end corners of the same side of the box cover 2 and the box body 1 respectively. When in use, the handle 5 at one corner can be grasped to disassemble, and then the handle 5 at the other corner can be grasped and pulled to disassemble the other side, which is convenient for the user to operate and reduces the risk of injury.

[0052] Of course, the handle 5 may also adopt the following structure, for example, the handle 5 is respectively located at two diagonally opposite corners of the box cover 2 and the box body 1. The usage is the same as the above embodiment, and the same technical effect can be achieved.

[0053] Further, the handle on the box cover 2 is larger than the handle on the box body 1. By adopting this structural arrangement, it is also convenient to pull the handle 5 on the box cover 2 by hand when disassembling, so as to facilitate the application of force to pull it open.

[0054] Furthermore, when the number of the card edges 3 is one, there is an oblique flow surface between the top inner edge of the box body 1 and the card edge 3. It should be noted here that the top inner edge of the box body 1 refers to the top edge of the inner cavity of the box body 1; the oblique flow surface is set between the top edge of the inner cavity and the card edge 3 to facilitate the overflow liquid to flow back into the inner cavity of the box body 1.

[0055] Finally, it should be noted that in order to facilitate the smooth insertion of the card edge 3, the raised drum-shaped arc of the gourd-shaped card edge cannot be too large, just slightly protruding, and the inclination of the trapezoidal card edge cannot be too large. The specifications of the large head end and the small head end should not be too different, about 1.1 times.

[0056] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sealing structure of a packaging box, characterized in that: It includes a box body, a box cover, a card edge, and a card slot; wherein: The card slots are arranged around the bottom of the box cover; The card edge is arranged around the top of the box body; The card slot and the card edge are tightly fitted together; The cross section of the card edge is a double-drum gourd-shaped structure; the cross section of the card slot is the same as the cross section of the card edge.

2. The sealing structure of the packaging box according to claim 1, characterized in that: The cross section of the card edge is trapezoidal, with the large end at the end; the cross section of the card slot is matched with the cross section of the card edge.

3. The sealing structure of the packaging box according to claim 1 or 2, characterized in that: When the cross section of the card edge is a double-drum gourd-shaped structure, the number of the card edge is one; when the cross section of the card edge is a trapezoid, the number of the card edges is one or two, and when the number of the card edges is two, they are arranged side by side.

4. The sealing structure of the packaging box according to claim 3, characterized in that: The two card edges have different heights, and the card edge closer to the inner side is greater than the card edge closer to the outer side.

5. The sealing structure of the packaging box according to claim 1, characterized in that: The edge of the box cover is provided with an upward-turned handle, and the edge of the box body is provided with a downward-turned handle.

6. The sealing structure of the packaging box according to claim 5, characterized in that: The handles are respectively located at the two end corners of the same side of the box cover and the box body; Alternatively, the handles are located at two diagonally opposite corners of the box cover and the box body, respectively.

7. The sealing structure of the packaging box according to claim 5, characterized in that: The specification of the handle on the box cover is greater than that of the handle on the box body.

8. The sealing structure of the packaging box according to claim 3, characterized in that: When the number of the clamping edge is one, an oblique flow surface is formed between the inner edge of the top of the box body and the clamping edge.

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