A disposable lunch box with good sealing

Abstract

The present invention relates to the technical field of disposable lunch boxes, specifically to a disposable lunch box with good sealing performance, simple structure, and can effectively solve the problems of soup contamination and the lunch box being easily pushed open due to the heat of the food. The present invention has practical significance and promotion value, and is expected to produce good economic benefits. The present invention comprises a box lid and a lunch box, wherein the box lid can be detachably arranged at the sealing portion of the lunch box, a leak-proof ring is arranged circumferentially of the box lid, a bearing ring matching the leak-proof ring is arranged circumferentially of the lunch box opening, a fixing ring is arranged on one side of the leak-proof ring, a bending ring is arranged on the side of the leak-proof ring not connected to the box lid, a limiting ring is provided on the leak-proof ring, a limiting groove is provided on the contact surface between the bearing ring and the leak-proof ring, the limiting ring can be inserted into the limiting groove, and an extrusion ring block is provided on the bearing ring. When the bearing ring contacts the leak-proof ring, the extrusion ring block extrudes the bending ring so that the bending ring presses against the fixing ring. When the bending ring presses against the fixing ring, the bending ring and the fixing ring cooperate to cover the open opening of the leak-proof ring.

Description

Technical Field

[0001] The present invention relates to the technical field of disposable lunch boxes, in particular to a disposable lunch box with good sealing performance. Background Art

[0002] Disposable meal boxes have shifted from foam to environmentally friendly ones. Original foam boxes have been phased out due to their heat resistance and environmental damage during production. They have been replaced by plastic, paper, wooden, and biodegradable boxes. Plastic, with its low toxicity, high melting point, strong plasticity, ease of production, and relatively low cost, has become the mainstream material for disposable fast food boxes.

[0003] The structure of a disposable lunch box can be simply divided into a lid and a main body. Its structure is simple but has good sealing performance. However, in actual use, diners often spill soup all over the table. There are several reasons for this:

[0004] First, when the disposable lunch box is closed, the heat from the food will condense into water droplets on the inside of the lid. When the lid is opened, these water droplets mixed with the soup will drip onto the table along the tilted lid.

[0005] Second, the hot steam from the food fills the gap between the lunch box and the lid, destroying the sealing of the lunch box, and the soup leaks from the gap onto the table;

[0006] Third, there are ventilation holes on the lid, and the soup from the food escapes from the ventilation holes and contaminates the table.

[0007] Since disposable lunch boxes have an extremely simple structure and are inexpensive to manufacture, it is not realistic to design complex mechanical structures or develop new lunch box formulas to solve the above problems. How to effectively solve the above problems will have positive significance for promoting technological development in this field. Summary of the Invention

[0008] The object of the present invention is to provide a disposable lunch box with good sealing performance to solve the problems mentioned in the background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a box lid and a lunch box, the box lid can be detachably arranged at the sealing portion of the lunch box, the box lid is circumferentially provided with a leak-proof ring, the cross-section of the leak-proof ring is in the shape of a "[", a carrying ring matching the leak-proof ring is circumferentially provided with a carrying ring that matches the leak-proof ring, a fixing ring is provided on the side where the box lid is connected to the leak-proof ring, a bending ring is provided on the side where the leak-proof ring is not connected to the box lid, a limiting ring is provided on the contact surface between the leak-proof ring and the carrying ring, a limiting groove is provided on the contact surface between the carrying ring and the leak-proof ring, the cross-section of the limiting groove is in the shape of a broken line and the limiting ring can be inserted into the limiting groove, an extrusion ring block is provided on the carrying ring, and when the carrying ring contacts the leak-proof ring, the extrusion ring block extrudes the bending ring so that the bending ring presses against the fixing ring, and when the bending ring presses against the fixing ring, the bending ring and the fixing ring cooperate to cover the opening of the leak-proof ring.

[0010] Preferably, the thickness of the bending ring is smaller than the thickness of the leak-proof ring.

[0011] Preferably, the hardness of the bending ring is less than the hardness of the leak-proof ring.

[0012] Preferably, the lunch box further comprises a receiving opening, which is arranged on the side of the lunch box along the length direction of the lunch box and has anti-falling blocks at the upper and lower ends of the receiving opening.

[0013] Preferably, the length of the anti-fall-off block is smaller than the length of the receiving opening.

[0014] Preferably, a toothed sealing ring is provided on the circumferential outer side of the box cover, and a groove matching the shape of the sealing ring is provided on the side of the lunch box.

[0015] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0016] The present invention provides a disposable lunch box with good sealing performance. When the box cover is arranged at the opening of the lunch box, the sealing ring will clamp the bearing ring, and the limiting ring will be clamped in the limiting groove to prevent soup from leaking out, which can have a sealing effect on food placed in the lunch box. The purpose of setting the storage port is to store disposable tableware.

[0017] After the lid is set at the opening of the lunch box, the extrusion ring block will squeeze the bending ring. At this time, the bending ring presses against the fixed ring. The bending ring and the fixed ring cooperate to seal the opening of the leak-proof ring to prevent soup from entering the leak-proof ring; when the hot steam from the food fills the closed space formed by the lunch box and the lid, the bending ring can bend inward to change the pressure in the closed space, thereby preventing excessive pressure from causing a gap between the lunch box and the lid, which causes soup to seep out, and there is no need to set additional air holes to balance the pressure.

[0018] When the lid is opened, the extrusion ring block no longer squeezes the bending ring, and the bending ring is reset to open the leak-proof ring. At this time, when the lid is tilted and placed vertically, the condensed soup on the lid will slide along the tilt of the lid and finally be collected in the leak-proof ring, which can prevent the soup from dripping onto the table and causing pollution.

[0019] The present invention has a simple structure and can effectively solve the problems of soup contamination and the lunch box being easily pushed open by the heat of the food. It has practical significance and promotion value and is expected to produce good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention (partial);

[0023] In the figure: box cover 1, leak-proof ring 101, fixing ring 102, bending ring 103, limiting ring 104, sealing ring 105, lunch box 2, carrying ring 201, limiting groove 202, extrusion ring block 203, receiving port 3, anti-slip block 301. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0025] Combine Figure 1-2, a disposable lunch box 2 with good sealing performance, comprising a box lid 1, a lunch box 2 and a receiving port 3, the box lid 1 can be detachably arranged at the sealing portion of the lunch box 2, a toothed sealing ring 105 is provided on the circumferential outer side of the box lid 1, and a groove matching the shape of the sealing ring 105 is provided on the side of the lunch box 2, the box lid 1 is circumferentially provided with a leak-proof ring 101, the cross section of the leak-proof ring 101 is in the shape of "[", a carrying ring 201 matching the leak-proof ring 101 is provided on the circumferential direction of the opening of the lunch box 2, a fixing ring 102 is provided on the side where the box lid 1 is connected to the leak-proof ring 101, and a bending ring 103 is provided on the side where the leak-proof ring 101 is not connected to the box lid 1, the hardness and thickness of the bending ring 103 are both less than the hardness and thickness of the leak-proof ring 101, and the leak-proof ring 101 and the carrying ring 201 are less than each other. A limiting ring 104 is provided on the contact surface, and a limiting groove 202 is provided on the contact surface between the carrying ring 201 and the leak-proof ring 101. The cross section of the limiting groove 202 is in the shape of a broken line and the limiting ring 104 can be inserted into the limiting groove 202. An extrusion ring block 203 is provided on the carrying ring 201. When the carrying ring 201 contacts the leak-proof ring 101, the extrusion ring block 203 squeezes the bending ring 103 so that the bending ring 103 presses against the fixed ring 102. When the bending ring 103 presses against the fixed ring 102, the bending ring 103 and the fixed ring 102 cooperate to cover the open opening of the leak-proof ring 101. The storage port 3 is arranged on the side of the lunch box 2 along the length direction of the lunch box 2 and anti-slip blocks 301 are provided at the upper and lower ends of the storage port 3. The length of the anti-slip block 301 is less than the length of the storage port 3.

[0026] The bending ring 103 refers to a sheet-shaped ring-shaped component that is elastic and can achieve bending action. Its specific material is not what those skilled in the art want to protect, so its specific material is not further disclosed.

[0027] The fixing ring 102 refers to a ring-shaped component fixedly disposed on the box cover.

[0028] The working principle of the present invention is: when the box cover 1 is set at the opening of the lunch box 2, the sealing ring 105 will clamp the bearing ring 201, and the limiting ring 104 will be clamped into the limiting groove 202 to prevent the soup from leaking out, which can seal the food placed in the lunch box 2. The purpose of setting the storage port 3 is to store disposable tableware.

[0029] After the lid 1 is set at the opening of the lunch box 2, the extrusion ring block 203 will squeeze the bending ring 103. At this time, the bending ring 103 presses against the fixed ring 102. The bending ring 103 and the fixed ring 102 cooperate to seal the opening of the leak-proof ring 101, preventing soup from entering the leak-proof ring 101; when the hot steam from the food fills the closed space formed by the lunch box 2 and the lid 1, the bending ring 103 can bend inward, changing the pressure in the closed space, avoiding excessive pressure causing a gap between the lunch box 2 and the lid 1, which causes soup to seep out, and there is no need to set additional air holes to balance the pressure.

[0030] When the lid 1 is opened, the extrusion ring block 203 no longer squeezes the bending ring 103, and the bending ring 103 is reset to open the opening of the leak-proof ring 101. At this time, when the lid 1 is tilted and placed vertically, the condensed soup on the lid 1 will slide along the tilt of the lid 1 and finally be collected in the leak-proof ring 101, which can prevent the soup from dripping onto the table and causing pollution.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A disposable lunch box (2) with good sealing performance, comprising a lid (1) and a lunch box (2), wherein the lid (1) is detachably arranged at the sealing portion of the lunch box (2), and characterized in that: The box cover (1) is provided with a leak-proof ring (101) in a circumferential direction, and the cross section of the leak-proof ring (101) is in a "[" shape. The opening of the lunch box (2) is provided with a bearing ring (201) matching the leak-proof ring (101) in a circumferential direction. A fixing ring (102) is provided on the side where the box cover (1) is connected to the leak-proof ring (101), a bending ring (103) is provided on the side where the leak-proof ring (101) is not connected to the box cover (1), and a limiting ring (104) is provided on the contact surface between the leak-proof ring (101) and the bearing ring (201); A limiting groove (202) is provided on the contact surface between the bearing ring (201) and the leak-proof ring (101); the cross section of the limiting groove (202) is in the shape of a broken line and the limiting ring (104) can be inserted into the limiting groove (202); an extrusion ring block (203) is provided on the bearing ring (201); when the bearing ring (201) contacts the leak-proof ring (101), the extrusion ring block (203) squeezes the bending ring (103) so that the bending ring (103) presses against the fixing ring (102); when the bending ring (103) presses against the fixing ring (102), the bending ring (103) and the fixing ring (102) cooperate to cover the open end of the leak-proof ring (101); The thickness of the bending ring (103) is less than the thickness of the leak-proof ring (101); The hardness of the bending ring (103) is less than the hardness of the leak-proof ring (101); It also includes a receiving opening (3), which is arranged on the side of the lunch box (2) along the length direction of the lunch box (2) and has anti-falling blocks (301) at the upper and lower ends of the receiving opening (3); The length of the anti-fall-off block (301) is smaller than the length of the receiving opening (3); A toothed sealing ring (105) is provided on the circumferential outer side of the box cover (1), and a groove matching the shape of the sealing ring (105) is provided on the side of the lunch box (2).

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