A sealed container

Abstract

The invention aims to provide a sealed container which can keep good sealing performance during transportation. The sealed container comprises an open box body and a box cover which can be covered on the open box body, an inner wall of an opening of the open box body is provided with a step surface, an outer periphery of the box cover is provided with a ring-shaped groove which is U-shaped in radial section, and a lap joint surface is connected to an opening outer side of the ring-shaped groove, when the box cover is covered on the open box body, an outer side surface of the ring-shaped groove is tightly combined with a side surface of the step surface. The invention can ensure sealing performance in various use conditions, realize water sealing and prevent soup of food from leaking out.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of packaging containers, and particularly relates to a sealed container for food. BACKGROUND

[0002] The sealed lunch box is a food packaging and sealing container commonly used in food packaging, fast food, personal work lunch and the like. The sealing performance of the container can not only play a role in heat preservation and freshness preservation, but also prevent soup from flowing out, so as to avoid food waste and pollution. At present, most of the sealed lunch boxes are sealed by means of the opening downward sealing groove arranged at the edge of the box cover and the opening edge of the box body. However, the sealing structure is not stable enough. When the sealed lunch box collides on the side, the sealing groove is easily deformed, resulting in leakage of water and juice due to the damage of the sealing. Especially when multiple lunch boxes are stacked and transported, the weight of the upper lunch box will extrude the lower lunch box, causing the opening edge of the sealing groove and the box body to be separated, and the sealing performance is damaged. SUMMARY

[0003] The purpose of the present application is to provide a sealed container which can maintain excellent sealing performance during transportation.

[0004] According to the sealed container provided by the present application, the inner wall of the opening of the open box body is provided with a stepped surface, the inner side of the outer periphery of the box cover is provided with a ring-shaped groove with a U-shaped radial section, and the outer side of the ring-shaped groove is connected with an overlapping surface. When the box cover is covered on the open box body, the outer side of the ring-shaped groove is tightly combined with the side surface of the stepped surface.

[0005] The sealed container of the present application is sealed by combining the side surface of the ring-shaped groove arranged on the inner side of the outer periphery of the box cover with the side surface of the stepped surface of the opening of the open box body. Since the radial section of the ring-shaped groove is U-shaped, the side surface of the ring-shaped groove is elastic. The elastic side surface of the ring-shaped groove is outwardly expanded, so that the side surface of the ring-shaped groove is tightly combined with the inner wall of the open box body, and excellent sealing effect is obtained. Especially when hot food is contained in the sealed container, the steam generated by the food increases the air pressure in the box body, extruding the ring-shaped groove, so that the outer side of the ring-shaped groove is more closely combined with the inner wall of the open box body, and the sealing performance is more ensured. During the transportation of the container, even if the container collides, the elastic ring-shaped groove can still keep the outer side of the ring-shaped groove combined with the inner wall of the open box body, preventing water and juice from leaking. When multiple sealed containers are stacked and transported, the gravity of the upper container extruding the box cover of the lower container is converted into a horizontal outward tension by the ring-shaped groove, so that the side surface of the ring-shaped groove is outwardly expanded, and the outer side of the ring-shaped groove is more closely combined with the inner wall of the open box body, ensuring the sealing performance during the stacked transportation.

[0006] Further, the lap joint surface is arranged obliquely, the outer periphery of the box cover is provided with a box cover ring edge, the lap joint surface is connected with the box cover ring edge, and the opening of the open box body is provided with a box body ring edge. In this way, when the box cover is buckled at the opening of the open box body, the box cover ring edge is abutted against the inner bottom side of the box body ring edge, and the position of the annular groove is fixed through the oblique lap joint surface connected with the box cover ring edge, so that the sealing performance is guaranteed.

[0007] Further, the bottom of the outer side surface of the annular groove is extended and provided with an inner buckle part. The inner buckle part can not only increase the area of the sealing surface and improve the sealing performance, but also increase the strength of the annular groove, prevent the annular groove from collapsing and deforming, and improve the strength of the whole product.

[0008] Further, the inner wall of the open box body is provided with a second step surface below the step surface. In this way, when the box cover is forced to sink during stacking and transportation, the inner buckle part at the bottom of the outer side surface of the annular groove is vertically limited by the second step surface, so that the box cover is prevented from sinking excessively and the sealing performance is guaranteed.

[0009] Further, as another embodiment, the lap joint surface is a part of the outer side surface of the annular groove extending upward, and the bottom of the annular groove is extended and provided with an inner buckle part. At this time, when the box cover is forced to sink, the inner buckle part of the annular groove is vertically limited by the step surface.

[0010] Further, the top of the box cover is provided with a ring of convex rings protruding upward, a plurality of convex ribs are arranged on the convex rings in the circumferential direction, and the bottom of the open box body is provided with a concave cavity capable of accommodating the convex rings during stacking. When the sealed container is stacked and transported, the concave cavity of the upper container cooperates with the convex ring of the lower container and the convex ribs on the convex ring, so that the upper container is prevented from slipping and the transportation stability is guaranteed. After the user opens the box cover for use, the box cover can be used reversely, the box body is placed on the reversely used box cover, the convex ring of the box cover is in contact with the supporting surface such as a table top, and the heat insulation effect is achieved to avoid damage to the supporting surface such as the table top. When the reversely used box cover is used as a heat insulation pad, the annular groove of the box cover can prevent the soup overflowing from the box body from leaking onto the box cover, and avoid pollution of the table top.

[0011] Further, the opening edge of the open box body is provided with a tearable opening. Since the sealing performance of the sealed container is very good, the user can tear part along the tearable opening during use, so that the user can open the box cover conveniently and avoid the trouble of breaking and opening, and the sealed container can also prevent others from exchanging the food in the container. Once a tear mark is found, it can be suspected that others have exchanged or damaged the food in the container, so as to protect the food safety.

[0012] Compared with the existing sealed container, the sealed container has the following advantages:

[0013] 1、 through the radial section of the box cover U-shaped annular groove and the inner wall of the box body is sealed to realize the sealing performance can be in a variety of use cases to ensure sealing performance, realize the water, prevent food soup leakage;

[0014] 2、 by the inner buckle of the box cover ring edge and the box body ring edge, the stability of the box cover can be ensured, and the sealing performance is further ensured;

[0015] 3、 the box cover is provided with a convex ring structure with a convex rib, which can be positioned and anti-skid with the concave cavity at the bottom of the box body during stacking and transportation; the reverse side of the box cover can be used as a heat insulation pad, which has good heat insulation effect and also prevents slipping;

[0016] 4、 the opening edge of the open box body is provided with a tearable opening, which facilitates the opening of the box cover. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of the present application.

[0018] Figure 2 is a schematic diagram of the exploded structure of the present application.

[0019] Figure 3 is a schematic diagram of the cross-sectional structure of embodiment 1 of the present application.

[0020] Figure 4 is a schematic diagram of the enlarged structure at A of Figure 3 .

[0021] Figure 5 is a schematic diagram of the cross-sectional structure of embodiment 2 of the present application.

[0022] Figure 6 is a schematic diagram of the enlarged structure at B of Figure 5 .

[0023] Figure 7 is a bottom angle axial view of the present application.

[0024] Figure 8 is a schematic diagram of the use state of the present application.

[0025] Figure 9 is a schematic diagram of the cross-sectional structure of the use state of the present application.

[0026] Figure 10 is a schematic diagram of the structure of the present application during stacking and transportation.

[0027] Among the drawings: 1, open box body; 11, stepped surface; 111, side surface of stepped surface; 12, box body ring edge; 13, second stepped surface; 14, concave cavity; 15, tearable opening; 2, box cover; 21, annular groove; 211, outer side surface of annular groove; 212, inner buckle part; 22, lap joint surface; 23, box cover ring edge; 24, convex ring; 241, convex rib. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application and the shapes, structures, mutual positions and connecting relationships between the parts, functions and working principles of the parts involved will be further explained in detail below with reference to the drawings and the description of the embodiments.

[0029] As shown in Figures 1-10 , the sealed container of the present application comprises an open box body 1 and a box cover 2 which can be covered on the open box body 1, and the inner wall of the opening of the open box body 1 is provided with a stepped surface 11, the inner side of the outer periphery of the box cover 2 is provided with a ring-shaped groove 21 with a U-shaped radial section, and the opening outer side of the ring-shaped groove 21 is connected with an overlapping surface 22, when the box cover 2 is covered on the open box body 1, the outer side surface 211 of the ring-shaped groove 21 is tightly combined with the side surface 111 of the stepped surface 11.

[0030] The sealed container of the present application, by setting the side surface 211 of the ring-shaped groove 21 on the inner side of the outer periphery of the box cover 2, and combining the side surface 111 of the stepped surface 11 at the opening of the open box body 1, realizes the sealing, as shown in Figure 1 ; since the radial section of the ring-shaped groove 21 is U-shaped, the side surface of the ring-shaped groove 21 has elasticity, and by the elasticity here, the side surface of the ring-shaped groove 21 is outwardly stretched, so that the side surface of the ring-shaped groove 21 is kept combined with the inner wall of the open box body 1, and a good sealing effect is obtained, especially when hot food is contained in the sealed container, the steam generated by the food increases the air pressure in the box body 1, and the ring-shaped groove 21 is extruded, so that the outer side surface 211 of the ring-shaped groove 21 is more close to the inner wall of the open box body 1, and the sealing performance is more ensured; and during the transportation of the container, even if a collision occurs, due to the elasticity of the ring-shaped groove 21, the outer side surface of the ring-shaped groove 21 can still be kept combined with the inner wall of the open box body 1, and the leakage of water and juice is prevented; when multiple sealed containers are stacked and transported, as shown in Figure 10 , the gravity of the upper container extrudes the box cover 2 of the lower container, and the extrusion is converted into a transverse outward tension by the ring-shaped groove 21, so that the side surface of the ring-shaped groove 21 is outwardly stretched, and then the outer side surface 211 of the ring-shaped groove 21 is more combined with the inner wall of the open box body 1, and the sealing performance during the stacked transportation is ensured.

[0031] As a preferred embodiment 1, as shown in Figure 3 and Figure 4 , the overlapping surface 22 is obliquely arranged, the outer periphery of the box cover 2 is provided with a box cover ring edge 23, the overlapping surface 22 is connected with the box cover ring edge 23, and the opening of the open box body 1 is provided with a box body ring edge 12. In this way, when the box cover 2 is buckled at the opening of the open box body 1, the box cover ring edge 23 is abutted on the inner bottom side of the box body ring edge 12, and then the position of the ring-shaped groove 21 is fixed by the oblique overlapping surface 22 connected with the box cover ring edge 23, and the sealing performance is ensured.

[0032] Preferably, the bottom of the outer side 211 of the annular groove 21 is extended with an inner buckle 212. The inner buckle 212 can not only increase the area of the sealing surface and improve the sealing performance, but also increase the strength of the annular groove 21, prevent the annular groove 21 from collapsing and deforming, and improve the strength of the entire product.

[0033] Preferably, the inner wall of the open box body 1 is provided with a second step surface 13 below the step surface 11. In this way, when the box cover 2 is forced to sink during stacking and transportation, the inner buckle 212 at the bottom of the outer side 211 of the annular groove 21 is vertically limited by the second step surface 13, preventing the box cover 2 from sinking too much and ensuring the sealing performance.

[0034] As another embodiment 2, as shown in Figure 5 and Figure 6 , the lap surface 22 is the part of the outer side of the annular groove 21 extending upward, and the bottom of the annular groove 21 is extended with an inner buckle 212. At this time, when the box cover 2 is forced to sink, the inner buckle 212 of the annular groove 21 is vertically limited by the step surface 11.

[0035] Preferably, the top of the box cover 2 is provided with a ring-shaped convex ring 24 protruding upward, and a plurality of convex ribs 241 are arranged on the convex ring 24 in the circumferential direction. The bottom of the open box body 1 is provided with a recess 14 capable of accommodating the convex ring 24 during stacking. The sealed container of the present application can prevent the upper container from slipping during stacking and transportation by matching the recess 14 of the upper container with the convex ring 24 and the convex ribs 241 on the convex ring 24 of the lower container, thereby ensuring the stability of transportation, as shown in Figure 10 After the user opens the box cover 2 for use, the box cover 2 can be used in reverse, and the open box body 1 is placed on the box cover 2 used in reverse. The convex ring 24 of the box cover 2 is in contact with the supporting surface such as a table top, thereby playing a heat insulation role and avoiding damage to the supporting surface such as a table top due to heat, as shown in Figure 8 and Figure 9 When the box cover 2 is used as a heat insulation pad in reverse, the annular groove 21 of the box cover 2 can prevent the soup overflowing from the open box body 1 from leaking onto the box cover 2, thereby avoiding pollution of the table top.

[0036] Preferably, the opening edge of the open box body 1 is provided with a tearable opening 15. Since the sealing performance of the present application is very good, the user can tear part along the tearable opening 15 of the opening edge of the open box body 1 during use, thereby facilitating the user to open the box cover 2 and avoiding the trouble of breaking and tearing. At the same time, it also plays a role in preventing others from exchanging food in the container. Once a tear mark is found, it can be suspected that others have exchanged or damaged the food in the container, thereby protecting food safety.

[0037] The box body ring edge 12 of the above-mentioned embodiment 1 and embodiment 2 is taken as an example of a circular shape. The box body ring edge 12 can also be square or polygonal in shape.

[0038] The above description is further detailed in connection with specific preferred embodiments of the present application, and it is not to be construed that the specific implementation of the present application is limited to these descriptions. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, and all of them should be considered as falling within the protection scope of the present application.

Claims

1. A sealed container comprising an open box and a box cover which can be closed on the open box, characterized in that The inner wall at the opening of the open box body is provided with a stepped surface, the outer periphery of the box cover is provided with a ring-shaped groove with a U-shaped radial section, the ring-shaped groove is connected with an overlapping surface at the opening of the ring-shaped groove, when the box cover is combined with the open box body, the outer side surface of the ring-shaped groove is tightly combined with the side surface of the stepped surface; the overlapping surface is obliquely arranged, the outer periphery of the box cover is provided with a box cover ring edge, the overlapping surface is connected with the box cover ring edge, the opening of the open box body is provided with a box body ring edge; the top of the box cover is provided with a ring-shaped convex ring protruding upward, a plurality of convex ribs are arranged on the convex ring in the circumferential direction, the bottom of the open box body is provided with a concave cavity capable of accommodating the convex ring when stacked; the convex rib is a ring-shaped convex rib arranged in the radial direction of the convex ring.

2. The sealed container of claim 1, wherein The bottom of the outer side surface of the ring-shaped groove is extended and provided with an inner buckle part; the inner wall of the open box body is provided with a second stepped surface below the stepped surface.

3. The sealed container of claim 1, wherein The overlapping surface is the part of the outer side surface of the ring-shaped groove extending upward, and the bottom of the ring-shaped groove is extended and provided with an inner buckle part.

4. The sealed container of claim 1, wherein The opening edge of the open box body is provided with a tearable opening.

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