Vacuum cup reliable in sealing
By adopting an integrated design for the body and lid of the thermos, combined with a multi-layer sealing structure, the problem of easy deformation and detachment of the sealing ring is solved, achieving a reliable seal for the thermos and ensuring a good seal during long-term use.
Patent Information
- Application Number
- CN202520672766.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The sealing ring structure of existing thermos cups is prone to deformation or detachment after prolonged use, resulting in unstable sealing performance, affecting the heat preservation effect and potentially causing leakage.
The cup body and lid are molded as one piece, and the structure of the base, main body and cup head are combined. The sealing performance is enhanced by the combination of multiple sealing structures such as the main cap, inner shell and outer shell. At the same time, the cup head and cup lid are equipped with limiting rings and sealing rings to achieve multi-level sealing connection.
This improves the sealing performance stability of the thermos, reduces the probability of leakage, and ensures a good seal during long-term use.
Smart Images

Figure CN223860536U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of thermos cups, and in particular to a thermos cup with a reliable seal. Background Technology
[0002] A thermos is generally a water container made of ceramic or stainless steel with a vacuum layer. It has a sealed lid on top. The vacuum insulation layer slows down the heat dissipation of the liquid inside, thus achieving the purpose of keeping it warm. The airtightness of the thermos is very important, especially the connection between the lid and the body. If the airtightness is not good, not only will the heat preservation effect be poor, but water leakage may also occur.
[0003] Regarding the aforementioned technologies, the inventors discovered that most existing thermos cups achieve their heat preservation effect by directly installing a set of sealing rings in the cup lid. However, after prolonged use, the single sealing ring structure is difficult to guarantee long-term stable sealing performance and is prone to deformation or even detachment. Utility Model Content
[0004] In order to achieve long-term stable sealing performance of the thermos cup, this application provides a thermos cup with reliable sealing.
[0005] The thermos cup with a reliable seal provided in this application adopts the following technical solution:
[0006] A reliably sealed thermos cup includes a cup body and a cup lid. The cup lid is fastened to the cup body and is integrally formed with the cup body. The cup body includes a base, a main body, and a cup head. The cup head and the base are respectively installed at the upper and lower ends of the main body, and the base, main body, and cup head are integrally formed. The cup lid includes a main cap, an inner snap shell, and an outer snap shell. The inner snap shell is installed on the lower end face of the main cap, and the outer snap shell is installed on the outer side face of the main cap. The main cap, inner snap shell, and outer snap shell are integrally formed.
[0007] By adopting the above technical solution, the opening of the cup is sealed by installing a lid on the cup body. The cup body is designed with a base, main body, and cup head that fit together. When in use, the base ensures stable placement. The main body is set on the base to store water. The cup head is set on the main body to connect with the lid, making it easy for the lid to be installed stably. The lid is designed with a main cap, inner shell, and outer shell that fit together. When in use, the main cap can be connected to the cup head. The inner and outer shells ensure multiple sealing protection when fastened to the cup head, increasing the overall sealing reliability of the thermos.
[0008] Optionally, an auxiliary outer sleeve is fitted and fixed on the outer surface of the main body, and a plurality of anti-slip rings are evenly arranged from top to bottom on the outer surface of the auxiliary outer sleeve, and the anti-slip rings are integrally formed with the auxiliary outer sleeve.
[0009] By adopting the above technical solution, an auxiliary cover is fixedly attached to the outer surface of the main body. This makes it easier for the user to pick up and use the device. Furthermore, the anti-slip ring on the auxiliary cover ensures a more stable grip and prevents slippage during use.
[0010] Optionally, the cup head includes an arc-shaped shell, a platform shell, and a spout, which are connected sequentially from bottom to top and are integrally formed.
[0011] By adopting the above technical solution, the cup head is designed as a structure in which the arc-shaped shell, the platform shell, and the spout cooperate. When it is easy to use, the arc-shaped shell can support the installation of the platform shell, and the platform shell can be used to install the spout. This ensures that the cup lid can be installed through the spout. Furthermore, the arc-shaped shell and the platform shell are designed to facilitate the formation of a multi-level connection structure with the cup lid, ensuring the sealing effect of the overall connection.
[0012] Optionally, an annular seat with a limiting auxiliary sleeve is provided on the outer side of the arc-shaped shell. The annular seat is integrally formed with the arc-shaped shell, and a sealing inner ring is fixedly installed on the inner side of the annular seat.
[0013] By adopting the above technical solution, by setting an annular seat for limiting auxiliary sleeve on the outer surface of the arc-shaped shell, the auxiliary sleeve can be limited at both ends by the base and the annular seat after it is put on the main body, ensuring that the installation is more stable after the auxiliary sleeve is put on. At the same time, by fixing a sealing inner ring on the inner side of the annular seat, the sealing inner ring can be put on the outer surface of the cup lid after the cup lid is installed on the cup head, further assisting the sealing.
[0014] Optionally, the outer surface of the spout is provided with an external thread, and the main cap is provided with an internal thread that mates with the spout.
[0015] By adopting the above technical solution, the main cap can be stably connected to the cup spout through the setting of internal and external threads.
[0016] Optionally, a sealing rod is provided at the center of the main cap, the sealing rod is fixedly connected to the main cap, and a sealing hemisphere is integrally formed on the lower end face of the sealing rod.
[0017] By adopting the above technical solution, and by setting a sealing rod and a sealing hemisphere at the center of the main cap, it is ensured that the sealing rod and sealing hemisphere can be stably inserted into the spout of the cup head during installation, thus achieving a sealed connection for the thermos cup.
[0018] Optionally, a sealing ring gasket is installed on the lower end face of the inner snap-fit shell, and the sealing ring gasket is engaged and fixed with the inner snap-fit shell.
[0019] By adopting the above technical solution, and by installing a sealing ring gasket on the lower end face of the inner shell, it is ensured that the sealing ring gasket can press against the upper end face of the arc-shaped shell during installation, thus ensuring a tighter connection between the two.
[0020] Optionally, an annular outer groove corresponding to the sealing inner ring is provided on the outer side surface of the outer buckle shell, and handles are symmetrically installed on the outer side surface of the outer buckle shell, and the handles are fixedly connected to the outer buckle shell.
[0021] By adopting the above technical solution, an annular outer groove is opened on the outer side of the outer shell, which makes it convenient to connect with the annular outer groove through the sealing inner ring during use, ensuring that the two can be locked together.
[0022] In summary, this application includes at least one of the following beneficial technical effects: By designing the cup body as a structure in which the base, main body, and cup head cooperate, the cup lid can be installed through the cup head when in use. Furthermore, by designing the cup head as a structure in which the arc-shaped shell, platform shell, and cup spout cooperate, it can be sealed and connected to the cup lid in sections when in use. This ensures that the thermos cup can be connected more tightly and achieve a stable sealing fit during use. At the same time, by setting an annular seat on the cup body and then installing a sealing inner ring on the inner side of the annular seat, it is ensured that the sealing inner ring can cooperate with the annular outer groove on the cup lid during use, thereby further increasing the sealing connection between the cup body and the cup lid and reducing the probability of heat preservation failure. Attached Figure Description
[0023] Figure 1 This is a perspective view of the overall structure in the embodiments of this application.
[0024] Figure 2 This is a perspective view of the cup body in an embodiment of this application.
[0025] Figure 3 yes Figure 2 A cross-sectional view of the device shown.
[0026] Figure 4 yes Figure 3 A magnified view of part A of the device shown.
[0027] Figure 5 This is a perspective view of the auxiliary jacket in the embodiments of this application.
[0028] Figure 6 This is a perspective view of the cup lid in an embodiment of this application.
[0029] Figure 7 yes Figure 6 A cross-sectional view of the device shown.
[0030] Explanation of reference numerals in the attached drawings: 1. Cup body; 11. Base; 12. Main body; 121. Auxiliary outer sleeve; 122. Anti-slip ring; 13. Cup head; 131. Arc-shaped shell; 132. Platform shell; 133. Cup spout; 134. Annular seat; 135. Sealing inner ring; 2. Cup lid; 21. Main cap; 211. Sealing rod; 212. Sealing hemisphere; 22. Inner snap shell; 221. Sealing ring gasket; 23. Outer snap shell; 231. Annular outer groove; 232. Handle. Detailed Implementation
[0031] The present application will be further described in detail below with reference to the accompanying drawings.
[0032] This application discloses a reliably sealed thermos cup.
[0033] Example 1
[0034] Reference Figure 1 , Figure 2 and Figure 5As shown, a reliably sealed thermos cup includes a cup body 1 and a cup lid 2. The cup lid 2 is fastened onto the cup body 1 and is integrally formed with the cup body 1. The cup body 1 includes a base 11, a main body 12 and a cup head 13. The cup head 13 and the base 11 are respectively installed at the upper and lower ends of the main body 12, and the base 11, the main body 12 and the cup head 13 are integrally formed. The cup lid 2 includes a main cap 21, an inner snap shell 22 and an outer snap shell 23. The inner snap shell 22 is installed on the lower end face of the main cap 21, and the outer snap shell 23 is installed on the outer side face of the main cap 21, and the main cap 21, the inner snap shell 22 and the outer snap shell 23 are integrally formed. The opening of the cup body 1 is sealed by installing a lid 2 on the cup body 1. The cup body 1 is designed with a base 11, main body 12, and cup head 13 that work together. For easy use, the base 11 ensures stable placement. The main body 12, mounted on the base 11, is used to store water. The cup head 13, mounted on the main body 12, connects to the lid 2, ensuring stable installation. The lid 2 is designed with a main cap 21, an inner snap-fit shell 22, and an outer snap-fit shell 23. For easy use, the main cap 21 connects to the cup head 13, and the inner and outer snap-fit shells 22 and 23 provide multiple layers of sealing protection, increasing the overall reliability of the thermos's seal. An auxiliary outer sleeve 121 is fitted and fixed onto the outer surface of the main body 12. Several anti-slip rings 122 are evenly distributed from top to bottom on the outer surface of the auxiliary outer sleeve 121, and the anti-slip rings 122 are integrally formed with the auxiliary outer sleeve 121. By attaching an auxiliary cover 121 to the outer surface of the main body 12, it is convenient for the user to pick up and use the device. Furthermore, by setting an anti-slip ring 122 on the auxiliary cover 121, the grip is made more stable and slippage is prevented during use.
[0035] Reference Figure 2 , Figure 3 and Figure 4As shown, the cup head 13 includes an arc-shaped shell 131, a platform shell 132, and a spout 133. The arc-shaped shell 131, platform shell 132, and spout 133 are connected sequentially from bottom to top, and are integrally formed. By designing the cup head 13 into a structure where the arc-shaped shell 131, platform shell 132, and spout 133 cooperate, the arc-shaped shell 131 can support and install the platform shell 132 when in use, while the platform shell 132 is used to install the spout 133. This ensures that the cup lid 2 can be installed through the spout 133 during use. Furthermore, the arrangement of the arc-shaped shell 131 and platform shell 132 facilitates the formation of a multi-level connection structure with the cup lid 2, ensuring a good overall sealing effect. An annular seat 134 for limiting auxiliary sleeve 121 is provided on the outer surface of the arc-shaped shell 131. The annular seat 134 is integrally formed with the arc-shaped shell 131, and a sealing inner ring 135 is fixedly installed on the inner surface of the annular seat 134. By providing the annular seat 134 for limiting auxiliary sleeve 121 on the outer surface of the arc-shaped shell 131, the auxiliary sleeve 121 can be limited at both ends by the base 11 and the annular seat 134 after being fitted onto the main body 12, ensuring a more stable installation after the auxiliary sleeve 121 is fitted. At the same time, by fixing the sealing inner ring 135 on the inner surface of the annular seat 134, the cup lid 2 can be fitted onto the outer surface of the cup lid 2 by the sealing inner ring 135 to further assist in sealing after being installed on the cup head 13. The outer surface of the cup spout 133 is provided with external threads, and the main cap 21 is provided with internal threads that mate with the cup spout 133. The use of internal and external threads ensures that the main cap 21 can be stably connected to the cup spout 133 via the threads.
[0036] Example 2
[0037] Reference Figure 1 , Figure 2 and Figure 5 As shown, a reliably sealed thermos cup includes a cup body 1 and a cup lid 2. The cup lid 2 is fastened onto the cup body 1 and is integrally formed with the cup body 1. The cup body 1 includes a base 11, a main body 12, and a cup head 13. The cup head 13 and the base 11 are respectively installed at the upper and lower ends of the main body 12, and the base 11, the main body 12, and the cup head 13 are integrally formed. The cup lid 2 includes a main cap 21, an inner snap shell 22, and an outer snap shell 23. The inner snap shell 22 is installed on the lower end face of the main cap 21, and the outer snap shell 23 is installed on the outer side face of the main cap 21. The main cap 21, the inner snap shell 22, and the outer snap shell 23 are integrally formed. The cup lid 2 is designed with a structure in which the main cap 21, the inner snap shell 22, and the outer snap shell 23 cooperate to ensure better connection with the cup head 13 on the cup body 1 during use.
[0038] Reference Figure 6 and Figure 7As shown, a sealing rod 211 is provided at the center of the main cap 21. The sealing rod 211 is fixedly connected to the main cap 21, and a sealing hemisphere 212 is integrally formed on the lower end face of the sealing rod 211. By providing the sealing rod 211 and sealing hemisphere 212 at the center of the main cap 21, it is ensured that the sealing rod 211 and sealing hemisphere 212 can be stably inserted into the spout 133 of the cup head 13 during installation, thus achieving a sealing connection for the thermos cup. A sealing ring gasket 221 is installed on the lower end face of the inner shell 22, and the sealing ring gasket 221 is engaged and fixed with the inner shell 22. By installing the sealing ring gasket 221 on the lower end face of the inner shell 22, it is ensured that the sealing ring gasket 221 can press against the upper end face of the arc-shaped shell 131 during installation, ensuring a tighter connection between the two. An annular outer groove 231 corresponding to the sealing inner ring 135 is provided on the outer surface of the outer casing 23, and handles 232 are symmetrically installed on the outer surface of the outer casing 23, with the handles 232 fixedly connected to the outer casing 23. By providing an annular outer groove 231 on the outer surface of the outer casing 23, it is convenient to connect the sealing inner ring 135 to the annular outer groove 231 during use, ensuring that the two can be locked together.
[0039] The implementation principle of a reliable sealed thermos cup in this application embodiment is as follows: When closing the lid, the lid 2 is directly installed on the head of the cup body 1, the spout 133 of the cup head 13 is inserted into the main cap 21, and the two are connected and fixed by rotation until the inner sealing ring 135 is inserted into the outer annular groove 231. At this time, the head of the body shell 132 can fit against the lower end face of the main cap 21, and the inner shell 22 can be pressed against the upper end face of the arc-shaped shell 131 by the sealing ring gasket 221, and the outer shell 23 is fastened on the arc-shaped shell 131 to cooperate with each other, thereby achieving the purpose of multiple mutual sealing connections.
[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A reliably sealed thermos cup, comprising a cup body (1) and a cup lid (2), wherein the cup lid (2) is fastened onto the cup body (1) and the cup lid (2) is integrally formed with the cup body (1), characterized in that: The cup body (1) includes a base (11), a main body (12) and a cup head (13). The cup head (13) and the base (11) are respectively installed at the upper and lower ends of the main body (12), and the base (11), the main body (12) and the cup head (13) are integrally formed. The cup lid (2) includes a main cap (21), an inner buckle shell (22) and an outer buckle shell (23). The inner buckle shell (22) is installed on the lower end face of the main cap (21), and the outer buckle shell (23) is installed on the outer side face of the main cap (21). The main cap (21), the inner buckle shell (22) and the outer buckle shell (23) are integrally formed.
2. The thermos cup with reliable sealing according to claim 1, characterized in that: An auxiliary outer sleeve (121) is fixedly fitted onto the outer surface of the main body (12). Several anti-slip rings (122) are evenly arranged from top to bottom on the outer surface of the auxiliary outer sleeve (121). The anti-slip rings (122) and the auxiliary outer sleeve (121) are integrally formed.
3. The thermos cup with reliable sealing according to claim 2, characterized in that: The cup head (13) includes an arc-shaped shell (131), a platform shell (132), and a spout (133). The arc-shaped shell (131), platform shell (132), and spout (133) are connected sequentially from bottom to top, and the arc-shaped shell (131), platform shell (132), and spout (133) are integrally formed.
4. The thermos cup with reliable sealing according to claim 3, characterized in that: The outer side of the arc-shaped shell (131) is provided with an annular seat (134) of a limiting auxiliary sleeve (121). The annular seat (134) is integrally formed with the arc-shaped shell (131), and a sealing inner ring (135) is fixedly installed on the inner side of the annular seat (134).
5. The thermos cup with reliable sealing according to claim 4, characterized in that: The outer surface of the spout (133) is provided with an external thread, and the main cap (21) is provided with an internal thread that mates with the spout (133).
6. The thermos cup with reliable sealing according to claim 5, characterized in that: A sealing rod (211) is provided at the center of the main cap (21). The sealing rod (211) is fixedly connected to the main cap (21), and a sealing hemisphere (212) is integrally formed on the lower end face of the sealing rod (211).
7. The thermos cup with reliable sealing according to claim 6, characterized in that: A sealing ring gasket (221) is installed on the lower end face of the inner buckle shell (22), and the sealing ring gasket (221) is engaged and fixed with the inner buckle shell (22).
8. The thermos cup with reliable sealing according to claim 7, characterized in that: The outer surface of the outer buckle shell (23) is provided with an annular outer groove (231) corresponding to the sealing inner ring (135), and a handle (232) is symmetrically installed on the outer surface of the outer buckle shell (23), and the handle (232) is fixedly connected to the outer buckle shell (23).