A connection structure between the inner liner and heating plate of a vacuum electric heating cup

Abstract

This utility model relates to a connection structure between the inner liner and heating plate of a vacuum electric heating cup, including an inner liner shell, an inner liner bottom cover, and a heating plate. The heating plate is fixedly disposed at the lower end of the inner liner bottom cover. It also includes a connecting sleeve, which is fixedly disposed at the lower end of the inner liner shell. The connecting sleeve and the inner liner shell are an integral structure. The upper end of the inner liner bottom cover is fixedly connected to the transition area between the connecting sleeve and the inner liner shell. Both the inner liner bottom cover and the heating plate are located within the connecting sleeve. This design reduces welding points, thereby lowering process complexity and vacuum sealing risks, and improving overall sealing performance and structural stability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum electric heating cup technology, and in particular to a connection structure between the inner liner and the heating plate of a vacuum electric heating cup. Background Technology

[0002] Vacuum electric heating cups, as portable water heating appliances, have become widely used in homes, offices, and outdoor settings in recent years due to their rapid heating and excellent heat preservation performance. Their core structure typically includes an inner liner, a vacuum layer, a heating plate, and an outer shell. The connection method between the inner liner and the heating plate directly affects the product's sealing performance, heating efficiency, and lifespan.

[0003] Currently, vacuum electric heating cups on the market generally use a separate welded structure to connect the inner liner and the heating plate. Specifically, the inner liner is usually assembled by welding the inner shell and the inner bottom cover, while the heating plate is pre-fixed to the bottom of the inner bottom cover; in order to accommodate the heating plate and related electronic control components, an additional connecting sleeve needs to be welded to the bottom of the inner shell.

[0004] However, this multi-component welded structure has significant technical drawbacks: since the inner liner alone requires at least two welds, the overall structure has a large number of weld points. This increase in weld points not only increases the complexity of the production process, but more importantly, each weld point can potentially become a weak point in the vacuum seal. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a connection structure between the inner liner and the heating plate of a vacuum electric heating cup, which can reduce welding points to reduce process complexity and vacuum sealing risks, and improve overall sealing performance and structural stability.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A connection structure for the inner liner and heating plate of a vacuum electric heating cup includes an inner liner shell, an inner liner bottom cover, and a heating plate. The heating plate is fixedly disposed at the lower end of the inner liner bottom cover. A connecting sleeve is also included, fixedly disposed at the lower end of the inner liner shell. The connecting sleeve and the inner liner shell are an integral structure. The upper end of the inner liner bottom cover is fixedly connected to the transition area between the connecting sleeve and the inner liner shell. Both the inner liner bottom cover and the heating plate are located within the connecting sleeve. Specifically, during subsequent processing, the upper end of the outer shell of the electric heating cup is fixedly and sealed to the upper end of the inner liner shell, and the lower end of the outer shell is also fixedly and sealed to the lower end of the inner liner shell. A vacuuming process is performed between the outer shell and the inner liner shell to form a vacuum layer. To ensure the vacuum rate of the vacuum layer, those skilled in the art generally consider improving the quality of the welding process, but this undoubtedly increases costs and reduces production efficiency.

[0008] In this solution, by making the connecting sleeve and inner shell an integrated structure, the number of welding points caused by separate welding (the inner shell is welded at least twice) in existing technologies is reduced, thereby effectively improving the overall sealing performance and stability of the structure and reducing the complexity of the manufacturing process. At the same time, the reduction in the number of welding points directly reduces the probability of weak points appearing in the vacuum seal. Because the connecting sleeve and inner shell are an integrated structure, gaps and incomplete welds that may occur during welding between the two are avoided. Combined with the reliable connection between the inner shell bottom cover and the transition area, the overall vacuum sealing performance is significantly improved, reducing the risk of vacuum failure due to welding point problems, and thus extending the service life of the vacuum electric heating cup.

[0009] Preferably, the inner liner bottom cover is fixed to the transition area between the connecting sleeve and the inner liner shell by welding. Welding ensures a stable connection between the inner liner bottom cover and the transition area, guaranteeing a tight fit between the two.

[0010] Preferably, the inner diameter of the connecting sleeve is larger than the outer diameter of the lower end of the inner shell, and the transition area between the connecting sleeve and the inner shell has a stepped surface. This stepped surface in the transition area provides a clear positioning reference for the installation of the inner shell bottom cover, allowing for quick alignment when welding the inner shell bottom cover to the transition area and reducing deviations during assembly. Furthermore, the stepped surface also provides clear marking points for subsequent welding.

[0011] Preferably, the upper end of the inner liner bottom cover is configured as a straight wall, the upper end of which abuts against the stepped surface, and the outer side of the straight wall fits against the inner wall of the connecting sleeve. The straight wall at the upper end of the inner liner bottom cover abuts against the stepped surface, while the outer side of the straight wall fits against the inner wall of the connecting sleeve, forming a multi-layered sealing structure to avoid the risk of liquid leakage. Combined with the welding fixing method, this further improves the overall sealing reliability of the structure. Moreover, this structure provides a clear positioning benchmark for the installation of the inner liner bottom cover. During assembly, simply aligning the straight wall to the corresponding position ensures the correct positioning of the inner liner bottom cover.

[0012] Preferably, the lower edge of the inner liner bottom cover has a rounded corner structure. This rounded corner design improves assembly processability, facilitating the smooth installation of the inner liner bottom cover into the connecting sleeve. It is particularly beneficial for automated or semi-automated assembly operations with tooling fixtures, thereby improving assembly efficiency and product consistency.

[0013] Preferably, a recessed receiving cavity is provided at the lower center of the bottom cover of the inner liner, and the heating plate is fixedly disposed within the receiving cavity. This provides a precise and stable installation space for the heating plate, enabling its positioning and fixation. Furthermore, the heating plate, embedded within the receiving cavity, forms a larger contact area with the bottom cover of the inner liner, effectively increasing the heating area and heat transfer efficiency, and significantly enhancing the product's heating performance.

[0014] Preferably, the lower end of the connecting sleeve extends downward to form an outwardly inclined portion, and the upper edge of the inclined portion has a rounded corner structure for a smooth transition. This structural design helps the housing to be smoothly introduced during assembly and accurately align with the connecting sleeve, improving assembly efficiency and connection reliability. The rounded corner design reduces friction during assembly, minimizing wear on the connecting surfaces and protecting the fit accuracy.

[0015] Preferably, an electrical protective cover is fixedly installed at the lower end of the connecting sleeve, and the heating plate is located between the electrical protective cover and the bottom cover of the inner liner, with the energized end of the heating plate passing through the electrical protective cover. This structural design provides physical isolation protection for the heating plate and its electrical control components through the electrical protective cover, effectively preventing moisture, dust, and other external environmental factors from entering and causing short circuits or leakage risks, thus significantly improving the safety of product use.

[0016] Preferably, one end of the heating plate is fixedly welded to the bottom surface of the accommodating cavity. This ensures a secure connection between the heating plate and the inner liner bottom cover, guaranteeing the stability and reliability of the heating plate during use and effectively preventing heating failure or safety hazards caused by loosening or detachment.

[0017] In summary, this connection structure between the inner liner and the heating plate of the vacuum electric heating cup reduces welding points, thereby lowering process complexity and potential vacuum sealing risks, and improving overall sealing performance and structural stability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 This is a schematic diagram of the connection structure between the inner liner and the heating plate of the vacuum electric heating cup described in this utility model;

[0020] Figure 2 for Figure 1 A magnified view of the area marked with "A";

[0021] Figure 3 for Figure 1 A magnified view of the area marked with "B";

[0022] Figure 4This is a schematic diagram of the structure of the bottom cover of the inner liner in the connection structure between the inner liner and the heating plate of the vacuum electric heating cup described in this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0024] in:

[0025] 1-Inner shell;

[0026] 2-Inner liner bottom cover; 21-Straight wall; 22-Receiving cavity;

[0027] 3-Heating plate;

[0028] 4-Connecting sleeve; 41-Inclined part; 42-Exhaust hole;

[0029] 5-Transition region;

[0030] 6-Step surface;

[0031] 7-Electrical protective cover;

[0032] 8-Outer shell;

[0033] 9-Vacuum layer. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Reference Figure 1 As shown, a connection structure between the inner liner and heating plate of a vacuum electric heating cup includes an inner liner shell 1, an inner liner bottom cover 2, and a heating plate 3. The heating plate 3 is fixedly disposed at the lower end of the inner liner bottom cover 2. It also includes a connecting sleeve 4, which is fixedly disposed at the lower end of the inner liner shell 1. The connecting sleeve 4 and the inner liner shell 1 are an integral structure. The upper end of the inner liner bottom cover 2 is fixedly connected to the transition area 5 between the connecting sleeve 4 and the inner liner shell 1. Both the inner liner bottom cover 2 and the heating plate 3 are located within the connecting sleeve 4. Specifically, refer to... Figure 5As shown, in the subsequent processing and molding process, the upper end of the outer shell 8 of the electric heating cup is fixedly and sealed to the upper end of the inner shell 1, and the lower end of the outer shell 8 is also fixedly and sealed to the lower end of the inner shell 1. A vacuuming process is then performed between the outer shell 8 and the inner shell 1 to form a vacuum layer 9 between them. To ensure the vacuum rate of the vacuum layer 9, those skilled in the art generally consider improving the quality of the welding process, but this undoubtedly increases costs and reduces production efficiency.

[0037] In this solution, by making the connecting sleeve 4 and the inner shell 1 an integrated structure, the number of welding points caused by the separate welding (at least two weldings for the inner shell) in the prior art is reduced, thereby effectively improving the sealing performance and stability of the overall structure and reducing the complexity of the manufacturing process. At the same time, the reduction in the number of welding points directly reduces the probability of weak points appearing in the vacuum seal. Since the connecting sleeve 4 and the inner shell 1 are an integrated structure, the potential sealing hazards such as gaps and incomplete welds caused by welding between the two are avoided. Combined with the reliable connection between the inner bottom cover 2 and the transition area 5, the vacuum sealing performance of the overall structure is significantly improved, reducing the risk of vacuum failure due to welding point problems, and thus extending the service life of the vacuum electric heating cup.

[0038] It should be noted that the heating plate 3 is a common product on the market, so it will not be described in detail in this application.

[0039] The inner liner bottom cover 2 is fixed to the connecting sleeve 4 and the transition area 5 of the inner liner shell 1 by welding. Welding ensures a stable connection between the inner liner bottom cover 2 and the transition area 5, guaranteeing a tight fit between the two.

[0040] Additionally, refer to Figure 2 As shown, the inner diameter of the connecting sleeve 4 is larger than the outer diameter of the lower end of the inner shell 1, and the transition area 5 between the connecting sleeve 4 and the inner shell 1 forms a stepped surface 6. In this way, the stepped surface 6 formed by the transition area 5 provides a clear positioning reference for the installation of the inner shell bottom cover 2, allowing the inner shell bottom cover 2 to be quickly aligned when welding with the transition area 5, reducing deviations during assembly. Furthermore, the stepped surface 6 also provides clear marking points for subsequent welding.

[0041] Additionally, refer to Figure 1 , Figure 2 and Figure 4As shown, the upper end of the inner liner bottom cover 2 is configured as a straight wall 21, with the upper end of the straight wall 21 abutting against the stepped surface 6, and the outer side wall of the straight wall 21 fitting against the inner wall of the connecting sleeve 4. The straight wall 21 at the upper end of the inner liner bottom cover 2 abuts against the stepped surface 6, while the outer side wall of the straight wall 21 fits against the inner wall of the connecting sleeve 4, forming a multi-layered sealing structure to avoid the risk of liquid leakage. Combined with the welding fixing method, this further improves the sealing reliability of the overall structure. Moreover, this structure provides a clear positioning benchmark for the installation of the inner liner bottom cover 2. During assembly, simply aligning the straight wall 21 with the corresponding position ensures the correct position of the inner liner bottom cover 2.

[0042] Additionally, refer to Figure 4 As shown, the lower edge of the inner liner bottom cover 2 has a rounded corner structure. This rounded corner design helps improve assembly processability, making it easier for the inner liner bottom cover 2 to be smoothly installed into the connecting sleeve 4. It is especially beneficial for automated or semi-automated assembly operations with tooling fixtures, thereby improving assembly efficiency and product consistency.

[0043] Additionally, refer to Figure 4 As shown, a recessed receiving cavity 22 is provided at the lower center of the inner liner bottom cover 2, and the heating plate 3 is fixedly installed in the receiving cavity 22. In this way, on the one hand, it provides a precise and stable installation space for the heating plate 3, realizing the positioning and fixation of the heating plate 3; on the other hand, after the heating plate 3 is embedded in the receiving cavity 22, it can form a larger contact area with the inner liner bottom cover 2, thereby effectively improving the heating area and heat conduction efficiency, and significantly enhancing the heating performance of the product.

[0044] Additionally, refer to Figure 3 As shown, the lower end of the connecting sleeve 4 extends downward to form an outwardly inclined portion 41, and the upper edge of the inclined portion 41 has a rounded corner structure for a smooth transition. This structural design helps the housing 8 to be smoothly introduced during assembly and accurately dock with the connecting sleeve 4, improving assembly efficiency and connection reliability. The rounded corner design reduces friction during assembly when connecting with the housing 8, minimizing wear on the connecting surfaces and protecting the fit accuracy.

[0045] Additionally, refer to Figure 1 and Figure 5 As shown, an electrical protective cover 7 is fixedly installed at the lower end of the connecting sleeve 4. The heating plate 3 is located between the electrical protective cover 7 and the inner bottom cover 2, and the energized end of the heating plate 3 passes through the electrical protective cover 7. This structural design provides physical isolation protection for the heating plate 3 and its electrical control components through the electrical protective cover 7, effectively preventing moisture, dust, and other external environmental factors from entering and causing short circuits or leakage risks, thus significantly improving the safety of the product.

[0046] Additionally, one end of the heating plate 3 is fixedly welded to the bottom surface of the accommodating cavity 22. This achieves a secure connection between the heating plate 3 and the inner liner bottom cover 2, ensuring the stability and reliability of the heating plate 3 during use and effectively preventing heating failure or safety hazards caused by loosening or detachment.

[0047] In this solution, in order to smoothly complete the vacuuming operation, the vent 42 for vacuuming will be opened on the connecting sleeve. The axis of the vent 42 is perpendicular to the axis of the connecting sleeve 4, so there is no need to change the vacuuming process or mold.

[0048] In summary, this connection structure between the inner liner and the heating plate of the vacuum electric heating cup reduces welding points, thereby lowering process complexity and potential vacuum sealing risks, and improving overall sealing performance and structural stability.

[0049] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting structure of a vacuum electric cup liner and a heating disc, comprising a liner shell, a liner bottom cover and a heating disc, the heating disc is fixedly arranged at the lower end of the liner bottom cover, characterized in that, It also includes a connecting sleeve, which is fixedly installed at the lower end of the inner shell. The connecting sleeve and the inner shell are an integral structure. The upper end of the inner shell bottom cover is fixedly connected to the transition area between the connecting sleeve and the inner shell. The inner shell bottom cover and the heating plate are both located inside the connecting sleeve.

2. The connecting structure of the inner container and the heating disc of the vacuum electric cup according to claim 1, characterized in that, The inner liner bottom cover is fixed to the transition area of ​​the connecting sleeve and the inner liner shell by welding.

3. The connecting structure of the inner container and the heating disc of the vacuum electric cup according to claim 2, characterized in that, The inner diameter of the connecting sleeve is larger than the outer diameter of the lower end of the inner shell, and the transition area between the connecting sleeve and the inner shell has a stepped surface.

4. The connecting structure of the inner container and the heating disc of the vacuum electric hot cup according to claim 3, characterized in that, The upper end of the inner liner bottom cover is configured as a straight wall, the upper end of the straight wall abuts against the stepped surface, and the outer wall of the straight wall fits against the inner wall of the connecting sleeve.

5. The connecting structure of the inner container and the heating disc of the vacuum electric hot cup according to claim 4, characterized in that, The lower edge of the inner liner bottom cover has a rounded corner structure.

6. The connection structure between the inner liner and the heating plate of the vacuum electric heating cup according to claim 5, characterized in that, The lower center of the inner liner bottom cover is provided with a concave receiving cavity, and the heating plate is fixedly installed in the receiving cavity.

7. The connecting structure of a vacuum electrothermal cup liner and a heating disc according to claim 1, characterized in that, The lower end of the connecting sleeve extends downward and forms an outwardly inclined portion, and the upper edge of the inclined portion has a rounded corner structure to achieve a smooth transition.

8. The connecting structure of a vacuum electrothermal cup liner and a heating disc according to claim 1, characterized in that, An electrical protective cover is fixedly installed at the lower end of the connecting sleeve. The heating plate is located between the electrical protective cover and the bottom cover of the inner liner. The energized end of the heating plate passes through the electrical protective cover.

9. The connecting structure of the inner container and the heating disc of the vacuum electric hot cup according to claim 6, characterized in that, One end of the heating plate is fixedly welded to the bottom surface of the accommodating cavity.

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