Leakage-proof vacuum cup with good sealing performance
The removable insulated inner liner design and snap-fit structure solve the problem of inconvenient replacement of existing thermos cup inner liners, enabling quick replacement of the inner liner and a good leak-proof sealing effect.
Patent Information
- Application Number
- CN202520353601.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The one-piece design of existing thermos cups makes cleaning and replacement inconvenient, and damage to the inner liner affects the heat preservation function.
It features a detachable insulated inner liner design, which allows for quick assembly and replacement of the inner liner through limiting posts and snap-fit structure, and ensures the seal between the lid and the cup mouth through a sealing structure.
It enables convenient replacement and maintenance of the insulation liner, avoiding the impact of insulation function due to damage to the liner, while ensuring airtightness and preventing leakage.
Smart Images

Figure CN223860533U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermos cup technology, specifically a leak-proof thermos cup with good sealing performance. Background Technology
[0002] A thermos is a water container made of ceramic or stainless steel with a vacuum layer. It has a lid that is tightly sealed. The vacuum insulation layer slows down the heat dissipation of the liquid inside, thus achieving the purpose of keeping it warm. As people's quality of life continues to improve, the market demand for thermos flasks, as a common insulated container in daily life, is growing day by day.
[0003] Several utility model patents in the field of thermos cup processing technology are disclosed in the prior art. Among them, utility model patent with publication number CN218683588U discloses a leak-proof thermos cup with good sealing performance. It includes a cup body, a sealing and leak-proof mechanism for sealing the cup body, a filtering mechanism for filtering tea leaves, and an anti-slip mechanism for preventing slippage at the bottom of the cup body. The sealing and leak-proof mechanism is located at one end of the cup body, and a leak-proof groove is formed at one end of the cup body. The filtering mechanism is located in the upper part of the inner cavity of the cup body, and the anti-slip mechanism is located at the other end of the cup body. This utility model, through the design of the sealing and leak-proof mechanism, achieves both good sealing performance and leak prevention. It is not only simple in structure but also employs a double-sealing operation, preventing leakage. It is not only convenient to use but also not easily damaged. The leak-proof groove prevents scalding when drinking or pouring water, and the double sealing operation at the lid and rim further enhances the sealing effect.
[0004] However, the above method still has the following drawbacks in actual use: when the inner liner of the thermos is mostly one piece, it is extremely inconvenient to clean or replace the inner liner. When the inner liner is damaged, the thermos will be unable to keep the thermos warm, which increases the subsequent operation steps. Utility Model Content
[0005] The purpose of this invention is to provide a leak-proof thermos cup with good sealing performance to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof thermos cup with good sealing performance, comprising a cup body, a cup lid on the top of the cup body, a retainer fixedly connected to the outside of the cup body, a cup mouth fixedly connected above the retainer, a sealing cap overlapping the cup mouth, a sealing structure outside the retainer, a groove on the outside of the cup lid, the sealing structure being engaged in the groove, a first insulated liner inside the cup body, a first limiting post fixedly connected below the first insulated liner, a second limiting post fixedly connected above the first insulated liner, a second insulated liner overlapping inside the cup body, an installation plate connected to the outside of the second insulated liner, a snap-fit structure rotatably connected inside the cup body, a sliding groove on the inside of the cup body, the snap-fit structure slidably connected in the sliding groove, the snap-fit structure being engaged in the installation plate, the snap-fit structure including a rotating ring and a bolt, a slider fixedly connected above the rotating ring, and an arc-shaped plate fixedly connected below the slider.
[0007] As a further preferred embodiment of this technical solution, the rotating ring is rotatably connected to the cup body, the slider is slidably connected to the groove, the arc-shaped plate is slidably connected to the cup body, the arc-shaped plate is snapped into the mounting plate, and the arc-shaped plate is connected to the cup body by bolts.
[0008] As a further preferred embodiment of this technical solution, the second limiting post is snapped into the second heat-insulating inner liner, the mounting plate is snapped into the body of the cup, and the first heat-insulating inner liner overlaps the bottom of the second heat-insulating inner liner.
[0009] As a further preferred embodiment of this technical solution, the limiting post is snapped into the cup body, the cup lid overlaps the top of the fixing device, and the sealing structure includes a sealing ring and a fixing post.
[0010] As a further preferred embodiment of this technical solution, the fixing column is fixedly connected to the bottom of the fixing device, the sealing ring is slidably connected to the outside of the fixing column, and a fixing plate is fixedly connected to the bottom end of the fixing column.
[0011] As a further preferred embodiment of this technical solution, the sealing ring is snapped into the groove, the retainer is sleeved on the outside of the sealing ring, the fixing post is sleeved with a spring, and the sealing ring is connected to the fixing plate through the spring.
[0012] This utility model provides a leak-proof thermos cup with good sealing performance, which has the following beneficial effects:
[0013] (1) This utility model sets up an insulated inner liner 1, a limiting post 1, an insulated inner liner 2, a limiting post 2, and a snap-fit structure to snap the insulated inner liner 2 and the insulated inner liner 1 into the cup body. The mounting plate on the surface of the insulated inner liner 2 will snap into the cup body. The slider drives the rotating ring to slide in the cup body. The slider will move in the groove. The arc plate will snap into the mounting plate when sliding. Then the rotating ring is threaded to the outer surface of the cup body through bolts. The thermos cup can achieve the function of quick assembly of the insulated inner liner 1 and the insulated inner liner 2 with the cup body through the cooperation between the rotating ring, the arc plate and the bolts. It is convenient to replace or repair the surface of the insulated inner liner 1 and the insulated inner liner 2 afterward. It avoids the thermos cup's heat preservation function from being affected when the insulated inner liner 1 and the insulated inner liner 2 are damaged, and reduces the subsequent operation procedures.
[0014] (2) By setting a sealing structure, the present invention applies a tension to the sealing ring. When the sealing ring slides on the surface of the fixed column, it will drive the spring to deform. After the sealing ring is loosened after the surface of the cup lid and the cup mouth is threaded, the sealing ring will be reset by the action of the spring. The reset sealing ring will be stuck in the groove, thereby sealing the connection between the cup lid and the cup body, avoiding leakage and ensuring the flexibility of the thermos. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a three-dimensional structural diagram of the explosion of the cup lid of this utility model.
[0017] Figure 3 This is a three-dimensional cross-sectional structural diagram of the cup body of this utility model;
[0018] Figure 4 This is a schematic diagram of the two-dimensional cross-sectional structure of the heat-insulating inner liner of this utility model;
[0019] In the diagram: 1. Cup body; 2. Cup lid; 3. Cup mouth; 4. Fixer; 5. Sealing cap; 6. Sealing structure; 601. Sealing ring; 602. Fixing post; 603. Fixing plate; 604. Spring; 7. Snap-fit structure; 701. Rotating ring; 702. Sliding block; 703. Arc plate; 704. Bolt; 8. Insulated inner liner one; 9. Limiting post one; 10. Groove; 11. Insulated inner liner two; 12. Limiting post two; 13. Mounting plate; 14. Slide groove. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0021] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown, in this embodiment, a leak-proof thermos cup with good sealing performance includes a cup body 1, a cup lid 2 on the top of the cup body 1, a retainer 4 fixedly connected to the outside of the cup body 1, a cup mouth 3 fixedly connected above the retainer 4, a sealing cap 5 overlapping above the cup mouth 3, a sealing structure 6 on the outside of the retainer 4, a groove 10 on the outside of the cup lid 2, the sealing structure 6 being engaged in the groove 10, an insulated inner liner 8 inside the cup body 1, a limit post 9 fixedly connected to the bottom of the insulated inner liner 8, and the insulated inner liner 8... A limiting post 12 is fixedly connected above the cup body 1. An insulated inner liner 11 overlaps inside the cup body 1. An installation plate 13 is connected to the outside of the insulated inner liner 11. A snap-fit structure 7 is rotatably connected inside the cup body 1. A sliding groove 14 is opened inside the cup body 1. The snap-fit structure 7 is slidably connected in the sliding groove 14 and snap-fitted in the installation plate 13. The snap-fit structure 7 includes a rotating ring 701 and a bolt 704. A slider 702 is fixedly connected above the rotating ring 701. An arc plate 703 is fixedly connected below the slider 702.
[0022] like Figure 1 and Figure 3 As shown, the fixing post 602 is fixedly connected to the bottom of the fixing device 4, the sealing ring 601 is slidably connected to the outside of the fixing post 602, the bottom end of the fixing post 602 is fixedly connected to the fixing plate 603, the sealing ring 601 is snapped into the groove 10, the fixing device 4 is sleeved on the outside of the sealing ring 601, the fixing post 602 is sleeved with a spring 604, and the sealing ring 601 is connected to the fixing plate 603 through the spring 604.
[0023] By setting the spring 604, when a pulling force is applied to the sealing ring 601, the sealing ring 601 slides on the surface of the fixed post 602, and the fixed plate 603 drives the spring 604 to deform, so that the spring 604 provides a certain support for the movement of the sealing ring 601, avoiding the phenomenon of the sealing ring 601 bumping during movement. When the sealing ring 601 loses resistance, it will be reset by the spring 604.
[0024] like Figure 4 As shown, the rotating ring 701 is rotatably connected inside the cup body 1, the slider 702 is slidably connected inside the slide groove 14, the arc plate 703 is slidably connected inside the cup body 1, the arc plate 703 is snapped into the mounting plate 13, the arc plate 703 is connected to the cup body 1 by bolts 704, the limiting post 2 12 is snapped into the heat-insulating inner liner 2 11, the mounting plate 13 is snapped into the cup body 1, the heat-insulating inner liner 1 8 overlaps below the heat-insulating inner liner 2 11, the limiting post 1 9 is snapped into the cup body 1, the cup lid 2 overlaps above the retainer 4, and the sealing structure 6 includes a sealing ring 601 and a fixing post 602.
[0025] By setting the slide groove 14, when the slider 702 drives the rotating ring 701 to slide within the cup body 1, the slider 702 will move within the slide groove 14, and the arc plate 703 will engage with the mounting plate 13 when sliding, so that the slide groove 14 plays a certain guiding role for the rotation of the rotating ring 701, and avoids the rotating ring 701 from getting stuck when rotating.
[0026] This utility model provides a leak-proof thermos cup with good sealing performance. The specific working principle is as follows:
[0027] When the thermos cup is being replaced with the first insulated liner 8 and the second insulated liner 11, the first insulated liner 8 can be snapped into the second insulated liner 11 by the second limiting post 12. Then, the second insulated liner 11 and the first insulated liner 8 can be snapped into the cup body 1. The first limiting post 9 below the first insulated liner 8 will be snapped into the bottom of the cup body 1. The mounting plate 13 on the surface of the second insulated liner 11 will be snapped into the cup body 1. Then, the slider 702 drives the rotating ring 701 to slide within the cup body 1. The slider 702 will move within the slide groove 14. The arc plate 703 will be snapped into the mounting plate 13 when sliding. Then, the rotating ring 701 will be threadedly connected to the outer surface of the cup body 1 by the bolt 704.
[0028] After the inner heat preservation liner 1 8 and the inner heat preservation liner 2 11 are completely fixed to the cup body 1, the sealing cap 5 is snapped onto the top of the cup mouth 3. When the cup cap 2 is fixed to the cup mouth 3, a pulling force is applied to the sealing ring 601. When the sealing ring 601 slides on the surface of the fixing post 602, it will cause the spring 604 to deform through the fixing plate 603. Then, the surface of the cup cap 2 and the cup mouth 3 are threaded together. When the cup cap 2 and the cup mouth 3 are completely connected, the sealing ring 601 is released. The sealing ring 601 will be reset by the action of the spring 604. After being reset, the sealing ring 601 will be snapped into the groove 10.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A leak-proof thermos cup with good sealing performance, comprising a cup body (1), characterized in that: The cup body (1) is provided with a cup lid (2) on the top. A retainer (4) is fixedly connected to the outside of the cup body (1). A cup mouth (3) is fixedly connected above the retainer (4). A sealing cap (5) overlaps above the cup mouth (3). A sealing structure (6) is provided outside the retainer (4). A groove (10) is opened on the outside of the cup lid (2). The sealing structure (6) is snapped into the groove (10). A heat-insulating inner liner (8) is provided inside the cup body (1). A limiting post (9) is fixedly connected below the heat-insulating inner liner (8). A limiting post (1) is fixedly connected above the heat-insulating inner liner (8). 2) The cup body (1) is fitted with an insulated inner liner (11), and the insulated inner liner (11) is connected to an installation plate (13). The cup body (1) is rotatably connected with a snap-fit structure (7). The cup body (1) is provided with a sliding groove (14). The snap-fit structure (7) is slidably connected in the sliding groove (14). The snap-fit structure (7) is snapped in the installation plate (13). The snap-fit structure (7) includes a rotating ring (701) and a bolt (704). A slider (702) is fixedly connected above the rotating ring (701). An arc plate (703) is fixedly connected below the slider (702).
2. The leak-proof thermos cup with good sealing performance according to claim 1, characterized in that: The rotating ring (701) is rotatably connected inside the cup body (1), the slider (702) is slidably connected inside the slide groove (14), the arc plate (703) is slidably connected inside the cup body (1), the arc plate (703) is snapped into the mounting plate (13), and the arc plate (703) is connected to the cup body (1) by bolts (704).
3. The leak-proof thermos cup with good sealing performance according to claim 1, characterized in that: The limiting post 2 (12) is snapped into the heat-insulating inner liner 2 (11), the mounting plate (13) is snapped into the cup body (1), and the heat-insulating inner liner 1 (8) overlaps below the heat-insulating inner liner 2 (11).
4. A leak-proof thermos cup with good sealing performance according to claim 1, characterized in that: The limiting post (9) is snapped into the cup body (1), the cup lid (2) overlaps the top of the retainer (4), and the sealing structure (6) includes a sealing ring (601) and a retaining post (602).
5. A leak-proof thermos cup with good sealing performance according to claim 4, characterized in that: The fixing post (602) is fixedly connected to the bottom of the fixing device (4), the sealing ring (601) is slidably connected to the outside of the fixing post (602), and the bottom end of the fixing post (602) is fixedly connected to the fixing plate (603).
6. A leak-proof thermos cup with good sealing performance according to claim 5, characterized in that: The sealing ring (601) is snapped into the groove (10), the retainer (4) is sleeved on the outside of the sealing ring (601), the retaining post (602) is sleeved with a spring (604), and the sealing ring (601) is connected to the retaining plate (603) through the spring (604).
Citation Information
Patent Citations
Leakage-proof vacuum cup with good sealing performance
CN218683588U