A high-sealing disposable packaging box

Abstract

The utility model provides a disposable packaging box with high sealing performance. The utility model adopts a clamping ring and an expansion part to form an annular groove structure toward the center of the box body, and then forms an outwardly convex clamping mechanism through a limiting part and a connecting section, so that the limiting part is clamped to the inside of the annular groove to form a stable box cover installation structure. At this time, there is inevitably a certain gap between the contact surfaces between the limiting part, the connecting section and the expansion part and the clamping ring. Correspondingly, the utility model also arranges a convex plate above the top plate to form an inflation area, and then connects the inflation area to the air holes arranged on the connecting section. Therefore, when other packaging boxes are placed above the convex plate, pressure will be applied to the convex plate, that is, the air inside the inflation area will be compressed and released to the gap of the contact surface through the air holes, thereby forming a positive pressure on the contact surface. In this way, the soup flowing into the gap of the contact surface can be blocked by forming a positive pressure through the gas, so that further sealing can be achieved to prevent the soup from leaking out.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable packaging boxes, in particular to a highly airtight disposable packaging box. Background Art

[0002] With the development of economy, people's living standards are constantly improving, and our dietary needs are also constantly increasing. In many cases, people are no longer limited to cooking at home. In particular, the emergence of instant consumption such as takeout has greatly facilitated our dining choices. In the takeout industry, a large number of plastic containers are used, among which boxes are indispensable items in takeout consumption.

[0003] Existing take-away boxes are roughly divided into three types. One is a mixed packing box, which is divided by several compartments, and the dishes are placed in the compartments. If the food is bumpy during delivery, the dishes in the box will be mixed, and it is not suitable for soup; one is to use several separate packing boxes to contain soup, dishes and rice separately, but this packing box is not stable when stacked together, and it is large in size and inconvenient to carry; the last one is a layered packing box, which can pack soup and dishes in layers through combined assembly, but the existing layered packing box has a weak structure and limited capacity for soup and dishes.

[0004] In summary, currently the most commonly used method is to use a single disposable packaging box to pack soup and vegetables. However, this packaging box has poor stability after packing, and its own sealing is average. It has little effect when used to hold meals, but when there is soup, if the bag is tilted after packing, it may cause the soup to leak out, affecting the deliveryman's carrying and making it inconvenient for the orderer to eat. Therefore, a disposable packaging box with better sealing is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a highly sealed disposable packaging box, which solves the problem in the prior art of poor stability and sealing, resulting in easy leakage of soup.

[0006] According to an embodiment of the utility model, a highly sealed disposable packaging box comprises a box body and a box cover, wherein the box body is a cylindrical structure with an open top, an expansion portion with an increased diameter is arranged at the top of the box body, and the top of the expansion portion is vertically bent toward the center of the box body to form a snap ring, and the snap ring and the expansion portion together constitute an annular groove structure toward the center of the box body, the box cover comprises a top plate and a limiting portion arranged at the bottom of the top plate, the limiting portion is an annular structure perpendicular to the top plate and having a diameter larger than the top plate, and a connecting section is provided at the top of the limiting portion, which is bent toward the inside and then connected to the top plate, and the limiting portion is just clamped in the annular groove formed by the snap ring and the expansion portion, so that the limiting portion is in close contact with the expansion portion, the snap ring and the connecting section, forming a closed structure with two mutually perpendicular contact surfaces, and a convex plate is also arranged in parallel above the top plate, a hollow inflation area is formed between the convex plate and the top plate, and an air hole is also arranged on the connecting section, one end of the air hole is connected to the contact surface of the closed structure, and the other end is connected to the inflation area.

[0007] Furthermore, the air hole is perpendicular to the limiting portion and is arranged exactly at the connection between the bottom end of the connecting section and the limiting portion, so that the air hole exactly passes into the contact surface between the top end of the limiting portion and the bottom surface of the clamping ring.

[0008] Furthermore, the connecting section is also provided with an annular sealing ring connected to the top plate at the position below the air hole, and the sealing ring forms a hollow air supply area at the corner of the top plate and the connecting section. The bottom of the air supply area is connected to the air hole, and the top plate is also provided with a connecting hole that penetrates to the inflation area at the position corresponding to the air supply area.

[0009] Furthermore, a vertically protruding disassembly ring is provided on the outer edge of the clamping ring.

[0010] Furthermore, a vertically raised placement ring is provided on the top edge of the top plate.

[0011] Furthermore, a sealing ring with an elastic structure is provided at the edge portion of the clamping ring near the middle of the box body. The sealing ring is a conical cylindrical structure, with the end with a larger diameter fixed to the edge of the clamping ring and the end with a smaller diameter extending obliquely downward and close to the center of the box body.

[0012] Furthermore, the sealing ring is located above the air hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model adopts a clamping ring and an expansion part to form an annular groove structure toward the center of the box body, and then forms an outwardly convex clamping mechanism through a limiting part and a connecting section, so that the limiting part is clamped to the inside of the annular groove to form a stable box cover installation structure. At this time, there is inevitably a certain gap between the contact surfaces between the limiting part, the connecting section and the expansion part and the clamping ring. Correspondingly, the utility model also arranges a convex plate above the top plate to form an inflation area, and then connects the inflation area to the air holes arranged on the connecting section. Therefore, when other packaging boxes are placed above the convex plate, pressure will be applied to the convex plate, that is, the air inside the inflation area will be compressed and released to the gap of the contact surface through the air holes, thereby forming a positive pressure on the contact surface. In this way, the soup flowing into the gap of the contact surface can be blocked by forming a positive pressure through gas, so that further sealing can be achieved to prevent the soup from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic longitudinal cross-sectional view of an embodiment of the utility model.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0017] In the above drawings: 1. box body; 2. expansion part; 3. clamping ring; 4. top plate; 5. limiting part; 6. connecting section; 7. convex plate; 8. sealing ring; 21. disassembly and assembly ring; 41. connecting hole; 61. air hole; 71. inflation area; 72. placement ring; 81. air supply area. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, the embodiment of the utility model provides a highly airtight disposable packaging box, including a box body 1 and a box cover made of plastic material.

[0020] The box body 1 is a cylindrical structure with an open top. The top of the box body 1 is provided with an expansion part 2 with an increased diameter. The top of the expansion part 2 is bent vertically toward the center of the box body 1 to form a snap ring 3. The snap ring 3 and the expansion part 2 together form an annular groove structure toward the center of the box body 1. The box cover includes a top plate 4 and a limiting part 5 arranged at the bottom of the top plate 4. The limiting part 5 is an annular structure that is perpendicular to the top plate 4 and has a diameter larger than the top plate 4. The top of the limiting part 5 is provided with a connecting section 6 that is bent toward the inside and then connected to the top plate 4. The limiting part 5 is just clamped in the annular groove formed by the snap ring 3 and the expansion part 2, so that the limiting part 5 is in close contact with the expansion part 2, the snap ring 3 and the connecting section 6, forming a closed structure with two mutually perpendicular contact surfaces. When in use, since the box body 1 and the box cover are both made of plastic materials with a certain elasticity, after the limiting part 5 is compressed inwardly, it is inserted into the box body 1 through the snap ring 3 so that it is clamped into the annular groove, and the closure of the box cover is completed. At this time, a certain gap inevitably exists between the contact surfaces of the limiting portion 5 , the connecting section 6 and the expansion portion 2 , the clamping ring 3 .

[0021] In this embodiment, a convex plate 7 is also arranged parallel to the top plate 4, and a hollow inflation area 71 is formed between the convex plate 7 and the top plate 4. An air hole 61 is also arranged on the connecting section 6, and one end of the air hole 61 is connected to the contact surface of the closed structure, and the other end is connected to the inflation area 71. When other packaging boxes are placed on the convex plate 7, pressure will be applied to the convex plate 7, that is, the air inside the inflation area 71 will be compressed and released to the gap of the contact surface through the air hole 61, thereby forming a positive pressure on the contact surface to achieve further sealing. Preferably, the air hole 61 is perpendicular to the limiting portion 5 and is exactly arranged at the connection between the bottom end of the connecting section 6 and the limiting portion 5, so that the air hole 61 just passes into the contact surface between the top of the limiting portion 5 and the bottom surface of the clamping ring 3.

[0022] Furthermore, in this embodiment, a vertically protruding disassembly ring 21 is provided on the outer edge of the snap ring 3, so that the user can easily bend the snap ring 3 outward through the disassembly ring 21 and then remove the cover. A vertically protruding placement ring 72 is provided on the top edge of the top plate 4, so that other packaging boxes stacked on top can be placed more stably. Preferably, the diameter of the box body 1 decreases from top to bottom, so that the diameter of the bottom surface of the box body 1 corresponds to the inner diameter of the placement ring 72, so as to achieve stable stacking.

[0023] Correspondingly, the connection section 6 is provided with an annular sealing ring 8 connected to the top plate 4 at a position below the air hole 61, and the sealing ring 8 forms a hollow air supply area 81 at the corner of the top plate 4 and the connection section 6. The bottom of the air supply area 81 is connected to the air hole 61, and the top plate 4 is provided with a connecting hole 41 penetrating to the inflation area 71 at a position corresponding to the air supply area 81. In this way, the inflation area 71 can be better connected with the air hole 61 to maintain the positive pressure of the contact surface.

[0024] like Figure 2 As shown, in a further solution, a sealing ring with an elastic structure is also provided at the edge of the clamping ring 3 near one end of the middle of the box body 1. The sealing ring is a conical cylindrical structure, with the end with a larger diameter fixed to the edge of the clamping ring 3, and the end with a smaller diameter extending obliquely downward and close to the center of the box body 1. The sealing ring is located above the air hole 61. Since the sealing ring is elastic and one end is fixed to the edge of the clamping ring 3, it does not affect the extension of the limiting portion 5, and is tightly attached to the outside of the connecting section 6 after the box cover is installed. When the gas injected into the inflation area 71 in the air hole 61 achieves positive pressure, the sealing ring plays a role similar to a valve, realizes the sealing of the contact surface end, and prevents the gas from being directly discharged to the outside through the gap, so that the positive pressure of the contact surface can be maintained for a long time, and its sealing function can be better achieved.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A highly airtight disposable packaging box, characterized in that: The box cover comprises a box body and a box cover, wherein the box body is a cylindrical structure with an open top, and an expansion portion with an increased diameter is arranged at the top of the box body, and the top end of the expansion portion is vertically bent toward the center of the box body to form a clamping ring, and the clamping ring and the expansion portion together constitute an annular groove structure toward the center of the box body, and the box cover comprises a top plate and a limiting portion arranged at the bottom of the top plate, the limiting portion is an annular structure vertical to the top plate and having a diameter larger than the top plate, and a connecting section is provided at the top end of the limiting portion, which is bent toward the inside and then connected to the top plate, and the limiting portion is just clamped in the annular groove formed by the clamping ring and the expansion portion, so that the limiting portion is in close contact with the expansion portion, the clamping ring and the connecting section, so as to form a closed structure with two mutually perpendicular contact surfaces, and a convex plate is also arranged in parallel above the top plate, and a hollow inflation area is formed between the convex plate and the top plate, and an air hole is also arranged on the connecting section, one end of the air hole is connected to the contact surface of the closed structure, and the other end is connected to the inflation area.

2. A highly airtight disposable packaging box as claimed in claim 1, characterized in that: The air hole is perpendicular to the limiting part and is arranged exactly at the connection between the bottom end of the connecting section and the limiting part, so that the air hole exactly passes into the contact surface between the top end of the limiting part and the bottom surface of the clamping ring.

3. A highly airtight disposable packaging box as claimed in claim 1, characterized in that: The connecting section is also provided with an annular sealing ring connected to the top plate at the position below the air hole. The sealing ring forms a hollow air supply area at the corner of the top plate and the connecting section. The bottom of the air supply area is connected to the air hole. The top plate is also provided with a connecting hole that penetrates to the inflation area at the position corresponding to the air supply area.

4. A highly airtight disposable packaging box as claimed in claim 1, characterized in that: The outer edge of the clamping ring is provided with a vertically protruding disassembly ring.

5. A highly airtight disposable packaging box as claimed in claim 1, characterized in that: A vertically raised placement ring is provided on the top edge of the top plate.

6. A highly airtight disposable packaging box as claimed in claim 1, characterized in that: The edge of the clamping ring near one end of the middle of the box body is also provided with a sealing ring with an elastic structure. The sealing ring is a conical cylindrical structure, with the end with a larger diameter fixed to the edge of the clamping ring and the end with a smaller diameter extending obliquely downward and close to the center of the box body.

7. A highly airtight disposable packaging box as claimed in claim 6, characterized in that: The sealing ring is located above the air hole.

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