Heat preservation water cup with detachable and replaceable inner container
By designing a detachable glass liner and stainless steel body, combined with sealing and cushioning design, the problem of poor heat preservation and easy damage of existing water cups has been solved, achieving efficient heat preservation and safe use.
Patent Information
- Application Number
- CN202520448454.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing water cups have low heat transfer efficiency, are easily scalded and fragile, have poor heat retention, and cannot be replaced once the glass liner breaks, affecting the user experience and cost.
A thermos with a detachable and replaceable glass liner has been designed. It adopts a separate structure of stainless steel body and glass liner, combined with flip-top assembly, sealing ring and anti-collision sleeve. The threaded connection and sealing structure enhance the airtightness to prevent water leakage. The air pressure is balanced by the vent hole, the limiting boss prevents excessive twisting, and the handle makes it easy to carry.
It achieves double-layer insulation, improves sealing and safety, reduces production and maintenance costs, and enhances the user experience.
Smart Images

Figure CN223958609U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of water cups, and in particular to a thermos water cup with a detachable and replaceable inner liner. Background Technology
[0002] Currently, the most common water cups on the market are purple clay cups, ceramic cups, and glass cups. These cups have high heat transfer efficiency, are easy to burn your hands, are fragile, and have poor heat retention. Furthermore, the glass liner of a double-walled water cup cannot be replaced after it breaks, rendering it unusable. In addition, double-walled stainless steel water cups are expensive, and the stainless steel glass liner can easily alter the taste of tea and beverages.
[0003] Therefore, based on the above-mentioned technical problems, this application proposes a thermos cup with a detachable and replaceable inner liner that enhances sealing and leak-proof function. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thermos with a replaceable glass inner liner and enhanced leak-proof function.
[0005] To achieve the above objectives, this utility model provides a detachable and replaceable inner liner insulated water cup, comprising a cup body and a cup lid, wherein a cavity is formed in the cup body; characterized in that: it further comprises a flip-top assembly, a glass inner liner, an anti-collision sleeve, and a primary sealing ring, wherein the flip-top assembly is installed on the cup lid; the glass inner liner is installed in the cavity, the anti-collision sleeve is located at the bottom of the cavity and is used to prevent the glass inner liner from colliding with the inner wall of the cup body, the primary sealing ring is sleeved on the outer circumferential surface of the bottom of the cup lid and is used for shock absorption and cushioning, the cup lid is formed with a water outlet that runs vertically through it and is used to allow water to flow out of the cup, a secondary sealing ring for shock absorption and cushioning is provided at the connection between the cup lid and the cup body, the sealing end of the cup lid is threadedly connected to the upper port of the cup body and the sealing end of the cup lid abuts against the top of the glass inner liner.
[0006] Furthermore, the lower middle outer circumferential surface of the cup lid is formed with external threads, and the inner wall surface of the top of the cup body cavity is formed with internal threads that are threadedly engaged with the external threads.
[0007] Furthermore, the cup lid is formed with vent holes for balancing the air pressure inside the cup after sealing, the outer circumferential surface of the cup lid is formed with limiting protrusions for preventing excessive fit with the cup body, and the bottom of the cup body is provided with an anti-slip pad.
[0008] Furthermore, a handle is formed on one side of the cup lid, wherein the handle is arched.
[0009] Furthermore, the flip cover assembly includes: a flip cover body and a sealing sleeve, wherein the flip cover body is formed with a sealing part that engages with the water outlet; the sealing sleeve is fitted onto the sealing part of the flip cover body.
[0010] Furthermore, one end of the flip cover body is formed with an inner snap-fit part, and the cup lid is formed with an outer snap-fit part that engages with the inner snap-fit part.
[0011] Furthermore, the cup lid has two symmetrically formed mounting holes for mounting the flip cover assembly, and the other end of the flip cover body has symmetrically formed hinge protrusions that are hinged to the mounting holes.
[0012] Furthermore, a filter screen for filtering solids from the glass liner is installed at the bottom of the primary sealing ring, and a filter groove for installing the filter screen is formed in an annular shape on the inner side of the bottom of the primary sealing ring, wherein the diameter of the filter screen is smaller than the diameter of the filter groove.
[0013] Furthermore, one end of the primary sealing ring is formed with a hook-shaped buffer portion, the other end of the primary sealing ring is formed with an inner snap-fit portion, and the bottom of the cup lid is formed with an outer snap-fit portion that snaps into and engages with the inner snap-fit portion.
[0014] The present invention adopts the above-described solution, and its beneficial effects are as follows:
[0015] The double-layer design makes it easier to keep the tea in the cup warm. Secondly, the split design allows the glass liner to be assembled into the cavity of the cup body. The glass liner is then further pressed and fixed by the threaded fit between the lid and the cup body, thereby increasing the cup's airtightness and preventing water from leaking out from the connection between the lid and the cup body when the cup is not in a vertical position. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure in this embodiment.
[0017] Figure 2 This is a schematic diagram of the cup lid in this embodiment.
[0018] Figure 3 This is a cross-sectional view of the cup lid in this embodiment.
[0019] Figure 4 This is a schematic diagram of the flip cover assembly in this embodiment.
[0020] Figure 5 This is a schematic diagram of the flip cover body in this embodiment.
[0021] Figure 6 This is an enlarged schematic diagram of the port on the cup body in this embodiment.
[0022] Among them, 1-cup body, 11-cavity, 12-upper port, 13-internal thread, 2-cup lid, 21-outlet, 22-sealing end, 221-outer snap-fit part, 222-outer thread, 23-vent hole, 24-limiting boss, 25-outer snap-fit part, 26-mounting hole, 3-flip lid assembly, 31-flip lid body, 311-sealing part, 312-inner snap-fit part, 313-hinge protrusion, 32-sealing sleeve, 4-glass inner liner, 5-primary sealing ring, 51-filter groove, 52-buffer part, 53-inner snap-fit part, 6-secondary sealing ring, 7-anti-slip pad, 8-handle part, 9-filter screen, 10-anti-collision sleeve. Detailed Implementation
[0023] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0024] See appendix Figure 1 As shown, in this embodiment, a thermos with a detachable and replaceable inner liner includes a cup body 1 and a cup lid 2, wherein a cavity 11 is formed on the cup body 1; it also includes a flip-top assembly 3, a glass inner liner 4, a shock-absorbing sleeve 10, and a primary sealing ring 5, wherein the flip-top assembly 3 is installed on the cup lid 2; the glass inner liner 4 is installed inside the cavity 11; the shock-absorbing sleeve 10 is located at the bottom of the cavity 11 and is used to prevent the glass inner liner 4 from colliding with the inner wall of the cup body 1; the primary sealing ring 5 is sleeved on the outer circumferential surface of the bottom of the cup lid 2 and is used for shock absorption and cushioning. Specifically, unlike traditional (thermos) double-layer fixed water cups, in this embodiment... In this example, the cup body 1 is preferably made of stainless steel and features a split design, allowing the tea to be consumed to come into contact with the glass inner liner 4. This design does not affect the quality of the tea and, based on the sturdiness and durability of the cup body 1, reduces production costs. Furthermore, by adding a shock-absorbing sleeve 10 between the cup body 1 and the glass inner liner 4, the glass inner liner 4 is relatively fixedly installed within the cavity of the cup body 1. The shock-absorbing sleeve 10 reduces the impact force between the glass inner liner 4 and the cavity 11, thereby reducing maintenance costs and improving safety. In addition, when the glass inner liner 4 is damaged, it can be replaced by purchasing a similar glass inner liner 4 for disassembly and reassembly, allowing for normal use.
[0025] See appendix Figure 2As shown, in this embodiment, the cup lid 2 has a vertically penetrating outlet 21 for allowing water to flow out of the cup. A secondary sealing ring 6 for shock absorption is provided at the connection between the cup lid 2 and the cup body 1. The sealing end 22 of the cup lid 2 is threadedly connected to the upper port 12 of the cup body 1, and the sealing end 22 of the cup lid 2 abuts against the top of the glass inner liner 4. External threads 222 are formed on the lower middle outer circumferential surface of the cup lid 2, and the inner wall surface of the top of the cavity 11 of the cup body 1 is formed with external threads 222. Specifically, the threaded engagement between the external thread 222 of the cup lid 2 and the internal thread 13 of the cavity 11 of the cup body 1 enables a detachable connection between the cup lid 2 and the cup body 1. When the glass liner 4 is assembled into the cavity 11, the threaded connection between the cup lid 2 and the cup body 1 causes the sealing end 22 of the cup lid 2 to press and fix the top of the glass liner 4, so that the water in the glass liner 4 will not leak out when the cup is not placed vertically, thereby increasing the sealing effect of the cup.
[0026] Furthermore, one end of the primary sealing ring 5 is formed with a hook-shaped buffer portion 52, and the other end of the primary sealing ring 5 is formed with an inner locking portion 53. The bottom of the cup lid 2 is formed with an outer locking portion 221 that engages with the inner locking portion 53. The hook-shaped buffer portion 52 increases the buffering capacity of the primary sealing ring 5, preventing excessive pressure on the glass liner 4 when the cup lid 2 is screwed on, thus preventing the glass liner 4 from breaking and improving its safety. Secondly, the engagement between the inner locking portion 53 and the outer locking portion 221 makes the primary sealing ring 5 more stably fitted on the cup lid 2, preventing the glass liner 4 in the cavity 11 from being not completely fixed and from shaking with the cup body 1 when the primary sealing ring 5 is not present or has fallen off, thereby increasing the risk of the glass liner 4 breaking.
[0027] See appendix Figure 1 , 2 As shown, the cup lid 2 is further provided with a vent hole 23 for balancing the air pressure inside the cup after sealing. A limiting protrusion 24 is formed on the outer circumference of the cup lid 2 to prevent excessive contact with the cup body 1. An anti-slip pad 7 is provided on the bottom of the cup body 1. Specifically, by providing a vent hole 23 on the cup lid 2, excess air in the cavity 11 can be discharged in time when the user seals the cup body 1, reducing the obstruction feeling when the user twists the cup lid 2. By forming a limiting protrusion 24 on the outer circumference of the cup lid 2, the limiting protrusion 24 will stop and abut against the upper port 12 of the cup body 1 when the user twists the cup lid 2 to seal it, preventing excessive twisting and pressing against the glass inner liner 4, which would cause unnecessary damage. Secondly, by providing an anti-slip pad 7 on the bottom of the cup body 1, the friction between the cup body 1 and the placement surface is increased, preventing the cup from falling and being damaged due to insufficient friction.
[0028] See appendix Figure 2As shown, a handle 8 is formed on one side of the cup lid 2. The handle 8 is arched, which makes it easier for users to pick up and carry the cup, thus improving the user experience. In addition, the arched design of the handle 8 makes it easier to connect the connecting rope to the handle 8 (not shown in the figure), which improves the convenience for users.
[0029] See appendix Figure 4 As shown, in this embodiment, the flip cover assembly 3 includes: a flip cover body 31 and a sealing sleeve 32. The flip cover body 31 has a sealing part 311 formed on it that engages with the water outlet 21. The sealing sleeve 32 is fitted onto the sealing part 311 of the flip cover body 31, thereby increasing the sealing performance of the sealing part 311 of the flip cover body 31 to the water outlet 21 of the cup lid 2 and increasing the fit of the assembly, thus reducing production costs.
[0030] See appendix Figure 3 , 4 As shown, in this embodiment, the flip-top assembly 3 is installed on the cup lid 2. The cup lid 2 has two symmetrically formed mounting holes 26 for mounting the flip-top assembly 3. The other end of the flip-top body 31 has symmetrically formed hinge protrusions 313 that are hinged to the mounting holes 26, thereby achieving an effective connection between the flip-top assembly 3 and the cup lid 2. One end of the flip-top body 31 has an inner snap-fit part 312, and the cup lid 2 has an outer snap-fit part 25 that is snapped to the inner snap-fit part, thereby increasing the sealing performance. Furthermore, the snap-fit design makes it easier for users to use.
[0031] See appendix Figure 1 As shown, furthermore, a filter screen 9 for filtering solids in the glass inner liner 4 is installed at the bottom of the primary sealing ring 5. A filter groove 51 for installing the filter screen 9 is formed in an annular shape on the inner side of the bottom of the primary sealing ring 5. The diameter of the filter screen 9 is smaller than the diameter of the filter groove 51. By installing the filter screen 9 on the primary sealing ring 5, solid brewing materials such as tea leaves can be intercepted when the user brews tea, thus improving the user experience.
[0032] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.
Claims
1. A thermos with a detachable and replaceable inner liner, comprising a body (1) and a lid (2), wherein, The cup body (1) has a cavity (11) formed on it; characterized in that: it also includes a flip-top assembly (3), a glass inner liner (4), an anti-collision sleeve (10) and a primary sealing ring (5), wherein the flip-top assembly (3) is installed on the cup lid (2); the glass inner liner (4) is installed inside the cavity (11), the anti-collision sleeve (10) is located at the bottom of the cavity (11) and is used to prevent the glass inner liner (4) from colliding with the inner wall of the cup body (1), and the primary sealing ring (5) is sleeved on. On the outer circumferential surface of the bottom of the cup lid (2) and for shock absorption and cushioning, the cup lid (2) is formed with a water outlet (21) that runs vertically through and is used to allow water to flow out of the cup. A secondary sealing ring (6) for shock absorption and cushioning is provided at the connection between the cup lid (2) and the cup body (1). The sealing end (22) of the cup lid (2) is threadedly connected to the upper port (12) of the cup body (1), and the sealing end (22) of the cup lid (2) abuts against the top of the glass inner liner (4).
2. The insulated water cup with a detachable and replaceable inner liner according to claim 1, characterized in that: The outer peripheral surface of the sealing end (22) of the cup lid (2) is formed with an external thread (222), and the inner wall surface of the top of the cavity (11) of the cup body (1) is formed with an internal thread (13) that is threadedly engaged with the external thread (222).
3. The insulated water cup with a detachable and replaceable inner liner according to claim 1, characterized in that: The cup lid (2) is formed with a vent hole (23) for balancing the air pressure inside the cup after sealing. The outer circumferential surface of the cup lid (2) is formed with a limiting boss (24) for avoiding excessive fit with the cup body (1). The bottom of the cup body (1) is provided with an anti-slip pad (7).
4. A thermos with a detachable and replaceable inner liner as described in claim 1, characterized in that: The cup lid (2) has a handle (8) formed on one side, wherein the handle (8) is arched.
5. A thermos with a detachable and replaceable inner liner as described in claim 1, characterized in that: The flip cover assembly (3) includes: a flip cover body (31) and a sealing sleeve (32), wherein the flip cover body (31) is formed with a sealing part (311) that engages with the water outlet (21); the sealing sleeve (32) is fitted onto the sealing part (311) of the flip cover body (31).
6. A thermos with a detachable and replaceable inner liner as described in claim 5, characterized in that: The flip cover body (31) has an inner buckle (312) formed at one end, and the cup lid (2) has an outer buckle (25) formed on it that engages with the inner buckle.
7. A thermos cup with a detachable and replaceable inner liner according to claim 5, characterized in that: The cup lid (2) has two symmetrical mounting holes (26) for mounting the flip lid assembly (3), and the other end of the flip lid body (31) has a hinge protrusion (313) that is hinged to the mounting holes (26).
8. A thermos with a detachable and replaceable inner liner as described in claim 1, characterized in that: The bottom of the primary sealing ring (5) is fitted with a filter screen (9) for filtering solids in the glass liner (4). The inner side of the bottom of the primary sealing ring (5) is formed with a filter groove (51) for installing the filter screen (9). The diameter of the filter screen (9) is smaller than the diameter of the filter groove (51).
9. A thermos with a detachable and replaceable inner liner as described in claim 1, characterized in that: One end of the primary sealing ring (5) is formed with a hook-shaped buffer part (52), the other end of the primary sealing ring (5) is formed with an inner snap-fit part (53), and the bottom of the cup lid (2) is formed with an outer snap-fit part (221) that snaps into the inner snap-fit part (53).