Aluminum foil meal box sealing structure

Abstract

The utility model belongs to the technical field of aluminum foil meal boxes, and particularly relates to an aluminum foil meal box sealing structure which comprises an aluminum foil box and an aluminum foil cover, a first upper pressing plate and a first lower pressing plate are clamped on the upper side and the lower side of the opening end of the aluminum foil box, and a second upper pressing plate and a second lower pressing plate are clamped on the upper side and the lower side of the aluminum foil cover. The first lower pressing plate and the second upper pressing plate are both provided with clamping grooves, the first upper pressing plate and the second lower pressing plate are both provided with elastic clamping plates matched with the clamping grooves in a clamped mode, a sealing gasket is clamped between the first upper pressing plate and the second lower pressing plate, the edge of the second upper pressing plate is connected with a plurality of connecting plates, and the connecting plates are matched with the first lower pressing plate in a clamped mode. The double-layer annular pressing plate is clamped on the edge portion of the aluminum foil box and the edge portion of the aluminum foil cover, rapid and stable connection is achieved through the buckles, and meanwhile the efficient and reliable sealing effect is achieved in cooperation with the sealing gasket.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum foil lunch boxes, and particularly relates to a closed structure of an aluminum foil lunch box. Background Art

[0002] In the fast-paced world of modern life, the catering industry's demands for food packaging are becoming increasingly diverse and stringent. Aluminum foil lunch boxes, due to their excellent thermal insulation, corrosion resistance, and portability, are widely used in fast food, takeout, airline catering, and other fields. However, traditional aluminum foil lunch box sealing methods often have several issues, limiting their further market expansion and improving user experience.

[0003] Traditional methods for sealing aluminum foil lunch boxes primarily include gluing and mechanical pressing. While gluing can achieve a certain sealing effect, the glue used often contains harmful chemicals, posing a potential safety hazard if left in contact with food for a long time. Furthermore, gluing is complex and requires specialized equipment and technical support, increasing production costs and operational difficulty. While mechanical pressing is relatively environmentally friendly, its sealing effectiveness often relies on the intensity and uniformity of pressure, making it prone to leaks or deep indentations that can damage the foil.

[0004] To address these issues, new aluminum foil lunch box sealing technologies have emerged on the market, such as ultrasonic welding and electromagnetic induction heating. While these technologies have improved sealing effectiveness and efficiency to a certain extent, they often require complex equipment and advanced operating techniques, increasing equipment costs and user barriers. Therefore, there is an urgent need for an aluminum foil lunch box sealing structure that can both ensure effective sealing and achieve fast and efficient sealing operations. Utility Model Content

[0005] In view of the above problems, the purpose of the present invention is to provide an aluminum foil lunch box sealing structure to solve the problems of traditional aluminum foil lunch box sealing such as loose sealing, deep indentation, high production cost and high operation difficulty.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an aluminum foil lunch box closing structure, comprising an aluminum foil box and an aluminum foil cover, wherein an upper pressure plate 1 and a lower pressure plate 1 are clamped on the upper and lower sides of the open end of the aluminum foil box, and an upper pressure plate 2 and a lower pressure plate 2 are clamped on the upper and lower sides of the aluminum foil cover, and the lower pressure plate 1 and the upper pressure plate 2 are both provided with a snap-fitting groove, and the upper pressure plate 1 and the lower pressure plate 2 are both provided with an elastic snap-fitting plate adapted to fit the snap-fitting groove, a sealing gasket is clamped between the upper pressure plate 1 and the lower pressure plate 2, and a plurality of connecting plates are connected to the edges of the upper pressure plate 2, and the connecting plates are adapted to fit the lower pressure plate 1.

[0007] The beneficial effects of the utility model are as follows: a double-layer annular pressure plate is clamped between the edges of the aluminum foil box and the aluminum foil cover, and a snap is used to achieve a quick and stable connection, and at the same time, a sealing gasket is used to achieve an efficient and reliable sealing effect.

[0008] In order to firmly clamp and connect the aluminum foil box with the upper pressing plate 1 and the aluminum foil cover with the lower pressing plate 1, the upper pressing plate 2 and the lower pressing plate 2 are firmly clamped and connected;

[0009] As a further improvement of the above technical solution: the number of the clamping grooves and the elastic clamping plates are both multiple, and are equidistantly arranged around the axes of the lower pressing plate 1, the upper pressing plate 2 and the upper pressing plate 1, the lower pressing plate 2.

[0010] The beneficial effect of this improvement is that the multiple snap-in grooves and the elastic snap-in plates can be firmly snapped together, so that the double-layer annular pressure plate is firmly fixed on the aluminum foil box and the aluminum foil cover.

[0011] In order to ensure the stability of the connection between the snap-in slot and the elastic snap-in plate;

[0012] As a further improvement of the above technical solution: the clamping groove is an L-shaped through groove structure, the elastic clamping plate is an L-shaped rod structure, and the end of the elastic clamping plate is a slope structure.

[0013] The beneficial effect of this improvement is that the end of the elastic snap-in plate is squeezed by the inner wall of the snap-in groove and elastically deformed during the process of inserting into the vertical section of the snap-in groove, and then releases elastic potential energy when entering the horizontal section of the snap-in groove and is snapped into the snap-in groove.

[0014] In order to effectively reduce the cost of the device;

[0015] As a further improvement of the above technical solution: the lower pressing plate 1, the upper pressing plate 1, the upper pressing plate 2, and the lower pressing plate 2 are all flat annular plate structures.

[0016] The beneficial effect of this improvement is that the design of the annular plate structure enables the lower pressure plate 1, upper pressure plate 1, upper pressure plate 2, and lower pressure plate 2 to be firmly fixed on the edges of the aluminum foil box and aluminum foil cover, while reducing the material usage itself and lowering the cost of the device.

[0017] In order to effectively ensure the sealing of the device;

[0018] As a further improvement of the above technical solution: the edge of the sealing gasket is flush with the top edge of the upper pressing plate 1 and the bottom edge of the lower pressing plate 2, and the sealing gasket is bonded to the bottom surface of the lower pressing plate 2.

[0019] The beneficial effect of this improvement is that the sealing gasket can play an effective sealing role at the connection between the aluminum foil box and the aluminum foil cover.

[0020] In order to ensure a firm connection between the aluminum foil box and the aluminum foil cover;

[0021] As a further improvement of the above technical solution: the bottom end of the connecting plate is formed with an arc-shaped plate structure bent in the axial direction of the upper pressing plate 2.

[0022] The beneficial effect of this improvement is that the arc-shaped plate portion of the connecting plate can be clamped on the lower side of the lower pressing plate after elastic deformation, thereby achieving a stable connection between the aluminum foil box and the aluminum foil cover.

[0023] In order to effectively ensure the safety of the device;

[0024] As a further improvement of the above technical solution: an air valve silicone plug is slidably inserted on the upper pressure plate 2, and a pressure relief hole is opened on the upper pressure plate 2 below the air valve silicone plug.

[0025] The beneficial effect of this improvement is that when the internal pressure of the sealed cavity between the aluminum foil box and the aluminum foil cover is too high, the silicone plug of the air valve is pushed upward, and the gas in the cavity is ejected through the pressure relief hole to achieve safe pressure relief.

[0026] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional structural diagram of the utility model;

[0028] Figure 2 It is a structural diagram of the utility model;

[0029] Figure 3 This is a schematic structural diagram of the aluminum foil box in the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the aluminum foil cover in the present invention;

[0031] Figure 5 It is an enlarged view of A in the present utility model;

[0032] In the figure: 1. Aluminum foil box; 2. Aluminum foil cover; 3. Lower pressure plate 1; 4. Upper pressure plate 1; 5. Snap-in groove; 6. Elastic snap-in plate; 7. Sealing gasket; 8. Upper pressure plate 2; 9. Lower pressure plate 2; 10. Silicone plug for air valve; 11. Pressure relief hole; 12. Connecting plate. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0034] Example 1:

[0035] like Figure 1—5 shows: an aluminum foil lunch box closing structure, comprising an aluminum foil box 1 and an aluminum foil cover 2, wherein an upper pressing plate 4 and a lower pressing plate 3 are clamped on the upper and lower sides of the open end of the aluminum foil box 1, an upper pressing plate 2 8 and a lower pressing plate 2 9 are clamped on the upper and lower sides of the aluminum foil cover 2, a snap-fitting groove 5 is provided on the lower pressing plate 3 and the upper pressing plate 2 8, an elastic snap-fitting plate 6 adapted to fit the snap-fitting groove 5 is provided on the upper pressing plate 4 and the lower pressing plate 2 9, a sealing gasket 7 is clamped between the upper pressing plate 4 and the lower pressing plate 2 9, a plurality of connecting plates 12 are connected to the edge of the upper pressing plate 2 8, the connecting plates 12 are adapted to fit the lower pressing plate 3, and the sealing gasket 7 is clamped between the upper pressing plate 4 and the lower pressing plate 2 9, and the edge of the upper pressing plate 2 8 is connected to a plurality of connecting plates 12, the connecting plates 12 are adapted to fit the lower pressing plate 3, and the sealing gasket 7 is clamped between the upper pressing plate 4 and the lower pressing plate 2 The double-layer annular pressure plate is clamped on the bottom, and a snap is used to achieve a quick and stable connection. At the same time, it cooperates with the sealing gasket to achieve an efficient and reliable sealing effect. The number of the snap-fitting grooves 5 and the elastic snap-fitting plates 6 are both multiple, and they are equidistantly spaced around the axes of the lower pressure plate 3, the upper pressure plate 2 8 and the upper pressure plate 4, the lower pressure plate 2 9. The multiple snap-fitting grooves 5 and the elastic snap-fitting plates 6 can be firmly snapped together to firmly fix the double-layer annular pressure plate on the aluminum foil box 1 and the aluminum foil cover 2. The snap-fitting groove 5 is an L-shaped through-groove structure, the elastic snap-fitting plate 6 is an L-shaped rod structure, and the end of the elastic snap-fitting plate 6 is a sloped structure. The end of the elastic snap-fitting plate 6 is inserted into the vertical section of the snap-fitting groove 5 during the process. The lower pressing plate 3, the upper pressing plate 4, the upper pressing plate 2, the lower pressing plate 2 and the lower pressing plate 2 are all flat annular plate structures. The design of the annular plate structure makes the lower pressing plate 3, the upper pressing plate 4, the upper pressing plate 2, the lower pressing plate 2 and the lower pressing plate 2 firmly fixed on the edges of the aluminum foil box 1 and the aluminum foil cover 2, while reducing the use of its own materials and reducing the cost of the device. The edge of the sealing gasket 7 is flush with the top edge of the upper pressing plate 4 and the bottom edge of the lower pressing plate 2 9. The sealing gasket 7 is bonded to the bottom surface of the lower pressing plate 2 9, and the sealing gasket 7 can It plays an effective sealing role at the connection between the aluminum foil box 1 and the aluminum foil cover 2. The bottom end of the connecting plate 12 is formed with an arc-shaped plate structure bent in the axial direction of the upper pressure plate 2 8. The arc-shaped plate part of the connecting plate 12 can be clamped on the lower side of the lower pressure plate 3 after elastic deformation, thereby realizing a stable connection between the aluminum foil box 1 and the aluminum foil cover 2. An air valve silicone plug 10 is slidably inserted on the upper pressure plate 2 8, and a pressure relief hole 11 is provided on the upper pressure plate 2 8 on the lower side of the air valve silicone plug 10. When the internal pressure of the sealed cavity between the aluminum foil box 1 and the aluminum foil cover 2 is too high, the air valve silicone plug 10 is pushed upward, and the gas in the cavity is ejected through the pressure relief hole 11 to achieve safe pressure relief.

[0036] The working principle of this technical solution is: the lower pressing plate 3 and the upper pressing plate 4 are buckled and fixed on the aluminum foil box 1, and the upper pressing plate 2 8 and the lower pressing plate 2 9 are buckled and fixed on the aluminum foil cover 2. When buckling the lower pressing plate 3, the upper pressing plate 4 and the upper pressing plate 2 8 and the lower pressing plate 2 9, the elastic snap-fitting plate 6 is inserted into the snap-fitting groove 5, and the elastic snap-fitting plate 6 that has been elastically deformed can be firmly snapped into the snap-fitting groove 5; when using this lunch box, after putting the food into the aluminum foil box 1, the aluminum foil cover 2 is covered on the aluminum foil box 1, and the connecting plate 12 is elastically snapped onto the lower pressing plate 3 to complete the firm connection between the aluminum foil box 1 and the aluminum foil cover 2. The sealing gasket 7 squeezed by the lower pressing plate 2 9 and the upper pressing plate 4 is elastically deformed, thereby playing an effective sealing role.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. An aluminum foil lunch box closure structure, characterized by: The invention comprises an aluminum foil box (1) and an aluminum foil cover (2), wherein an upper pressing plate (4) and a lower pressing plate (3) are clamped on the upper and lower sides of the opening end of the aluminum foil box (1), and an upper pressing plate (8) and a lower pressing plate (9) are clamped on the upper and lower sides of the aluminum foil cover (2), and a snap-fit ​​groove (5) is provided on the lower pressing plate (3) and the upper pressing plate (8), and an elastic snap-fit ​​plate (6) adapted to snap-fit ​​the snap-fit ​​groove (5) is provided on the upper pressing plate (4) and the lower pressing plate (9), and a sealing gasket (7) is clamped between the upper pressing plate (4) and the lower pressing plate (9), and a plurality of connecting plates (12) are connected to the edge of the upper pressing plate (8), and the connecting plates (12) are adapted to snap-fit ​​the lower pressing plate (3).

2. The aluminum foil lunch box sealing structure according to claim 1, characterized in that: The number of the snap-fit ​​grooves (5) and the elastic snap-fit ​​plates (6) are both multiple, and are respectively arranged at equal intervals around the axes of the lower pressing plate 1 (3), the upper pressing plate 2 (8) and the upper pressing plate 1 (4), the lower pressing plate 2 (9).

3. The aluminum foil lunch box sealing structure according to claim 1, characterized in that: The clamping groove (5) is an L-shaped through-groove structure, the elastic clamping plate (6) is an L-shaped rod structure, and the end of the elastic clamping plate (6) is an inclined surface structure.

4. The aluminum foil lunch box sealing structure according to claim 1, characterized in that: The lower pressing plate 1 (3), the upper pressing plate 1 (4), the upper pressing plate 2 (8) and the lower pressing plate 2 (9) are all flat annular plate structures.

5. The aluminum foil lunch box sealing structure according to claim 1, characterized in that: The edge of the sealing gasket (7) is flush with the top edge of the upper pressing plate (4) and the bottom edge of the lower pressing plate (9), and the sealing gasket (7) is bonded to the bottom surface of the lower pressing plate (9).

6. The aluminum foil lunch box sealing structure according to claim 1, characterized in that: The bottom end of the connecting plate (12) is formed with an arc-shaped plate structure bent in the axial direction of the second upward pressing plate (8).

7. The aluminum foil lunch box closure structure according to claim 1, characterized in that: An air valve silicone plug (10) is slidably inserted on the upper pressure plate (8), and a pressure relief hole (11) is provided on the upper pressure plate (8) below the air valve silicone plug (10).

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