Leakage-proof and overflow-proof vacuum cup

By designing a double-layer sealing structure in the thermos, and utilizing the combination of an overflow hole and a receiving groove, the problem of liquid leakage caused by the connection between the lid and the mouth of the traditional thermos is solved, achieving both overflow and leakage prevention, and improving ease of use.

CN223994686UActive Publication Date: 2026-03-17HUNAN JUQI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-13
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

When traditional thermos cups are threaded together with the lid, a plastic block is inserted into the rim, causing liquid to be pressurized. This makes it easy for liquid to leak out from the sealing gap, spilling and contaminating the cup, which is inconvenient to use.

Method used

A leak-proof and overflow-proof thermos cup was designed, which adopts a double-layer sealing structure, including a first sealing cover and a second sealing cover. The first sealing cover has a first insulation block installed in the inner ring and has an overflow hole that communicates with the cup body unit. The second sealing cover is threadedly connected to the first sealing cover to form a secondary sealing barrier. The overflow hole releases pressure, the containment tank temporarily stores excess liquid, and the second sealing cover seals the top.

Benefits of technology

It achieves no liquid leakage when the cup is overloaded, preventing spillage and contamination. Users can unscrew the second sealing cap to drain the liquid, avoiding manual rinsing and ensuring that the seal is not affected by tilting or squeezing the cup.

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Abstract

The utility model discloses a leakage-proof and overflow-proof vacuum cup, and relates to the field of vacuum cups. The leakproof and spill-proof vacuum cup comprises a cup body unit and a cup cover unit installed on the cup body unit, the cup cover unit comprises a first sealing cover and a second sealing cover, a first heat preservation block is installed on the surface of an inner ring of the first sealing cover, the first heat preservation block is inserted into the top of the cup body unit, a containing groove is formed in the upper portion of the first heat preservation block, and the second heat preservation block is inserted into the containing groove. The first heat preservation block is selectively provided with a plurality of vertically-through overflow holes, and the second sealing cover is installed on the top of the first sealing cover. According to the leakage-proof and overflow-proof vacuum cup, when too much water is poured out of the cup body and the first heat preservation block is inserted into the cup body unit, the overflow hole releases the pressed liquid in the cup body unit, the defect that the liquid leaks out of the sealing gap due to pressure in a traditional vacuum cup is overcome, and meanwhile the containing groove temporarily stores redundant liquid to prevent the liquid from overflowing to pollute the cup body.
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Description

Technical Field

[0001] This utility model relates to the field of thermos cup technology, specifically a leak-proof and overflow-proof thermos cup. Background Technology

[0002] Traditional thermos cups typically use a combination of stainless steel and ceramic to maintain heat, resulting in a non-transparent body. When adding hot water, the cup is often nearly full before the contents are noticed. Furthermore, to enhance the seal and insulation, a plastic block is often added inside the lid. When the lid is threaded onto the rim, this plastic block inserts into the rim, causing pressure on the liquid inside. This pressure allows the liquid to leak out through the seal, flowing directly down the outer wall of the rim, contaminating the cup and causing inconvenience. Therefore, this application proposes a leak-proof and spill-proof thermos cup. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a leak-proof and overflow-proof thermos cup, which solves the problem that when the lid is threaded to the cup mouth, a plastic block is inserted into the cup mouth, causing the liquid inside the cup mouth to be pressurized, making it easy for the liquid to leak out from the sealing gap. The overflowing liquid flows directly along the outer wall of the cup mouth, contaminating the cup body and causing inconvenience in use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof and overflow-proof insulated cup, comprising a cup body unit and a lid unit mounted on the cup body unit, wherein the lid unit comprises:

[0005] The first sealing cap has a first heat-insulating block installed on its inner ring surface, and the first heat-insulating block is inserted into the top of the cup body unit. A receiving groove is opened above the first heat-insulating block, and the first heat-insulating block may optionally have multiple overflow holes that run vertically through it. The interior of the cup body unit is connected to the receiving groove through the overflow holes.

[0006] The second sealing cover, which is installed on top of the first sealing cover, is used to seal and insulate the receiving groove.

[0007] Preferably, the cup body unit includes:

[0008] Thermos cup body;

[0009] The cup opening is located at the top of the insulated cup body. The first sealing cap is threaded to the outside of the cup opening, and the first insulation block is inserted into the cup opening.

[0010] Preferably, a limiting ring is fixedly installed on the inner wall of the cup opening, a limiting frame is placed in the limiting ring, and a filter screen is fixedly connected to the bottom of the limiting frame.

[0011] Preferably, the first insulation block is tightly abutted against the top of the limiting ring and the limiting frame.

[0012] Preferably, a second heat-insulating block is fixedly installed at the bottom of the second sealing cover, and the second heat-insulating block is threadedly connected to the top inner ring of the first sealing cover.

[0013] Preferably, the second sealing cap abuts tightly against the top of the first sealing cap.

[0014] This utility model discloses a leak-proof and overflow-proof thermos cup, which has the following beneficial effects:

[0015] 1. This leak-proof and overflow-proof thermos cup features a first insulation block that, when inserted into the cup unit, releases pressurized liquid from the overflow hole when too much water is poured in. This avoids the leakage problem common in traditional thermos cups where liquid leaks out through the seal due to pressure. Simultaneously, the containment tank temporarily stores excess liquid to prevent spillage and contamination. The second sealing cap seals the top of the containment tank to prevent backflow or splashing, achieving a spill-proof effect. Users can unscrew the second sealing cap to drain the liquid from the containment tank, avoiding the need for manual rinsing.

[0016] 2. This leak-proof and overflow-proof thermos cup features a first sealing cap that is inserted into the cup opening via a first insulation block, forming the main sealing layer; and a second sealing cap that is threadedly connected to the first sealing cap via a second insulation block, creating a secondary sealing barrier. Even if the cup body is squeezed or impacted, the double-layer physical compression seal can still ensure no liquid leakage, completely solving the problem of liquid leakage caused by the insertion of plastic blocks into the cup opening in traditional thermos cups. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cup body unit structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cup lid unit of this utility model.

[0022] In the diagram: 1. Cup body unit; 11. Insulated cup body; 12. Cup mouth; 13. Limiting ring; 14. Limiting frame; 15. Filter screen; 2. Cup lid unit; 21. First sealing cover; 211. First insulation block; 212. Overflow hole; 213. Receiving groove; 22. Second sealing cover; 221. Second insulation block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This application provides a leak-proof and overflow-proof insulated cup, which solves the problem that when the cup lid is threaded to the cup mouth, a plastic block is inserted into the cup mouth, which causes the liquid inside the cup mouth to be pressurized, and the liquid easily seeps out from the sealing gap. The overflowing liquid flows directly along the outer wall of the cup mouth, contaminating the cup body and causing inconvenience in use.

[0025] When too much water is poured into the cup unit 1, the overflow hole 212 releases the pressurized liquid inside the cup unit 1 when the first insulation block 211 is inserted into the cup unit 1. This avoids the defect of traditional insulated cups where liquid leaks out from the sealing gap due to pressure. At the same time, the receiving groove 213 temporarily stores the excess liquid to prevent overflow and contamination of the cup body. The second sealing cap 22 seals the top of the receiving groove 213 to prevent liquid backflow or splashing, achieving a spill-proof effect of only allowing water to enter and not exit. Users can unscrew the second sealing cap 22 to drain the liquid from the receiving groove 213, avoiding the need for manual rinsing.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] This utility model discloses a leak-proof and overflow-proof thermos cup.

[0028] According to the appendix Figure 1-4 As shown, the device includes a cup body unit 1 and a cup lid unit 2 mounted on the cup body unit 1. The cup lid unit 2 includes:

[0029] The first sealing cap 21 has a first heat-insulating block 211 installed on its inner ring surface, and the first heat-insulating block 211 is inserted into the top of the cup body unit 1. A receiving groove 213 is opened above the first heat-insulating block 211, and the first heat-insulating block 211 may optionally have multiple overflow holes 212 that pass through vertically. The interior of the cup body unit 1 is connected to the receiving groove 213 through the overflow holes 212.

[0030] The second sealing cover 22 is installed on top of the first sealing cover 21 and is used to seal and insulate the groove 213.

[0031] When too much water is poured into the cup unit 1, the overflow hole 212 releases the pressurized liquid inside the cup unit 1 when the first insulation block 211 is inserted into the cup unit 1. This avoids the defect of traditional insulated cups where liquid leaks out from the sealing gap due to pressure. At the same time, the receiving groove 213 temporarily stores the excess liquid to prevent overflow and contamination of the cup body. The second sealing cap 22 seals the top of the receiving groove 213 to prevent liquid backflow or splashing, achieving an overflow-proof effect of only allowing water to flow in and not out. Users can unscrew the second sealing cap 22 to drain the liquid in the receiving groove 213, avoiding the need for manual rinsing.

[0032] Specifically disclosed, the cup body unit 1 includes:

[0033] Thermos body 11;

[0034] The cup opening 12 is located at the top of the insulated cup body 11. The first sealing cap 21 is threadedly connected to the outer side of the cup opening 12, and the first insulation block 211 is inserted into the cup opening 12.

[0035] Furthermore, a limiting ring 13 is fixedly installed on the inner wall of the cup mouth 12, a limiting frame 14 is placed in the limiting ring 13, and a filter screen 15 is fixedly connected to the bottom of the limiting frame 14.

[0036] The filter 15 is designed to filter the tea leaves.

[0037] Furthermore, the first insulation block 211 is tightly abutted against the top of the limiting ring 13 and the limiting frame 14.

[0038] Furthermore, a second heat-insulating block 221 is fixedly installed at the bottom of the second sealing cover 22, and the second heat-insulating block 221 is threadedly connected to the top inner ring of the first sealing cover 21.

[0039] Furthermore, the second sealing cap 22 is tightly abutted against the top of the first sealing cap 21.

[0040] The first sealing cap 21 is inserted into the cup opening 12 via the first insulation block 211 to form the main sealing layer; the second sealing cap 22 is threadedly connected to the first sealing cap 21 via the second insulation block 221 to construct a secondary sealing barrier. Even if the cup body unit 1 is squeezed or impacted, the double-layer physical compression seal can still ensure no liquid leakage, completely solving the problem of liquid leakage caused by the insertion of plastic blocks into the cup opening 12 in traditional insulated cups.

[0041] The first sealing cap 21 is threaded to the outer side of the cup opening 12, and the first heat-insulating block 211 is inserted into the inner wall of the cup opening 12; the second sealing cap 22 is threaded to the top inner ring of the first sealing cap 21, and the second heat-insulating block 221 seals the receiving groove 213. The double-layer threaded structure and physical compression seal ensure vertical sealing, so that even if the cup body unit 1 is inverted or under pressure, the liquid cannot leak.

[0042] When the cup unit 1 is tilted or too much water is poured in, the liquid is pressurized and flows through the overflow hole 212 into the receiving tank 213. The second sealing cap 22 prevents further leakage of liquid. After the liquid is temporarily stored in the receiving tank 213, the user can unscrew the second sealing cap 22 to drain the liquid, avoiding the risk of overflow.

[0043] Traditional thermos cups cause liquid pressure due to the insertion of a plastic block into the cup opening 12. However, this invention releases pressure through the overflow hole 212. After the liquid enters the receiving tank 213, the internal pressure of the cup opening 12 decreases, and the sealing gap between the first insulation block 211 and the cup opening 12 is no longer affected by liquid pressure, thus fundamentally eliminating the leakage problem.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof and spill-proof vacuum cup, comprising a cup body unit (1) and a cup cover unit (2) mounted on the cup body unit (1), characterized in that, The cup cover unit (2) comprises: A first sealing cover (21) is internally provided with a first heat preservation block (211), and the first heat preservation block (211) is inserted into the top of the cup body unit (1). An accommodating groove (213) is formed in the top of the first heat preservation block (211), and a plurality of overflow holes (212) vertically penetrating the first heat preservation block (211) are selectively formed. The interior of the cup body unit (1) is in communication with the accommodating groove (213) through the overflow holes (212); A second sealing cover (22) is mounted on the top of the first sealing cover (21) to seal and preserve the accommodating groove (213).

2. The leak-proof and spill-proof vacuum cup of claim 1, wherein, The cup body unit (1) comprises: A heat preservation cup body (11); A cup mouth (12) is arranged on the top of the heat preservation cup body (11), the first sealing cover (21) is threadedly connected to the outer side of the cup mouth (12), and the first heat preservation block (211) is inserted into the cup mouth (12).

3. The leak-proof and spill-proof vacuum cup of claim 2, wherein, A limiting ring (13) is fixedly arranged on the inner wall of the cup mouth (12), a limiting frame (14) is arranged in the limiting ring (13), and a filter screen (15) is fixedly connected to the bottom of the limiting frame (14).

4. The leak-proof and spill-proof vacuum cup of claim 3, wherein, The first heat preservation block (211) is tightly abutted against the top of the limiting ring (13) and the limiting frame (14).

5. The leak-proof, spill-proof vacuum cup of claim 1, wherein, A second heat preservation block (221) is fixedly arranged on the bottom of the second sealing cover (22), and the second heat preservation block (221) is threadedly connected to the top inner ring of the first sealing cover (21).

6. The leak-proof, spill-proof vacuum mug of claim 1, wherein, The second sealing cover (22) is tightly abutted against the top of the first sealing cover (21).