A cup body and an electric heating cup

Abstract

This application discloses a cup body and an electric heating cup. The upper shell has a rim and a lower interface, the lower interface forming an annular bend that curves inwards towards the inside of the cup. The lower shell has an upper interface and a bottom, the upper interface abutting and welded to the annular bend of the upper shell, and the bottom forming an extension that extends inwards towards the inside of the cup. The outer contour of the upper interface area of ​​the lower shell matches the outer contour of the lower interface area of ​​the upper shell. This application's cup body and electric heating cup achieve a seamless, integrated appearance on the outer surface of the cup, significantly improving the product's aesthetics, ease of cleaning, and overall structural integrity.

Description

Technical Field

[0001] This application relates to the field of cup and kettle technology, and more specifically, to a cup body and an electric heating cup. Background Technology

[0002] Existing cup bodies, especially those for electric cups requiring heating functions, often employ a segmented design to meet structural strength, manufacturing process, or functional zoning requirements. They typically consist of an upper shell (or cup body) and a lower shell (or cup bottom). Common connection methods include threaded connections, snap-fit ​​connections, or fastening with connectors.

[0003] However, all of the above connection methods have obvious shortcomings. When the upper and lower shells are connected, there will inevitably be a raised or recessed seam on the outside of the cup. This seam not only disrupts the overall integrity and smoothness of the cup's appearance, affecting its aesthetics, but more importantly, during daily use, liquids, dust, and other contaminants can easily seep into and remain in the gaps of the seam, making it difficult to clean thoroughly. Over time, this can easily lead to bacterial growth and pose a hygiene hazard.

[0004] Therefore, there is an urgent need for an improved cup structure that can present a seamless, continuous, integrated appearance on its outer surface while ensuring connection strength and sealing, thereby improving the product's aesthetics, safety, and hygiene. Utility Model Content

[0005] In view of this, this application provides a cup body and an electric heating cup, which achieves a seamless integrated effect on the outer surface of the cup body, significantly improving the product's aesthetics, ease of cleaning, and overall structural integrity.

[0006] In a first aspect, this application provides a cup body, comprising: The upper shell has a cup mouth and a lower interface, wherein the lower interface forms an annular bend that bends toward the inside of the cup body; The lower shell has an upper interface and a cup bottom. The upper interface is connected to and welded to the annular bend of the upper shell. The cup bottom has an extension that extends into the inner side of the cup body. The outer contour of the upper interface area of ​​the lower shell matches the outer contour of the lower interface area of ​​the upper shell.

[0007] By adopting the above technical solution, the bending part of the upper shell and the extension part of the lower shell are both set inward, resulting in a simple structure that is easy to stamp and form. After the joint between the upper and lower shells is welded and polished, the cup body appears seamless from the side, with no connecting seams in the middle and bottom, resulting in a clean and aesthetically pleasing appearance and easy cleaning. The welding operation is performed on the outside of the cup body at the joint. The weld bead formed after welding is higher than the original outer surface of the cup body. The weld bead can be directly removed by subsequent grinding and polishing, making the original outer surfaces of the upper and lower shells in this area integrated. Because the outer contours of the joint match and the connecting structure is concealed, a smooth, continuous, seamless, and structurally stepless integrated outer surface is obtained, fundamentally solving the problem of dirt accumulation and aesthetic impact at the joint. Conventional cup bases are made of plastic or rubber for easy assembly and anti-slip purposes, thus having a seam with the side of the cup body. The extension design of this technical solution moves the connecting seam from the traditional side wall of the cup body to the inner bottom, significantly improving the product's aesthetics and overall texture.

[0008] In some embodiments, the bending portion includes an integrally connected first portion and a second portion, the first portion extending a distance into the upper shell, the second portion being connected to the first portion and extending axially away from the cup opening, the inner surface of the upper interface abutting against the second portion.

[0009] By adopting the above technical solution, this "L"-shaped or near-"L"-shaped bending structure provides a precise axial positioning surface and radial limiting surface for the upper interface of the lower shell. The second part abuts against the inner surface of the upper interface, ensuring the concentricity and stability of the connection, making it less prone to misalignment during welding, and improving welding quality and efficiency. At the same time, this structure enhances the local stiffness at the interface.

[0010] In some implementations, the distance by which the first part extends into the upper shell is not less than the wall thickness of the upper interface.

[0011] By adopting the above technical solution, it is ensured that when there may be a gap between the upper interface end face and the first part end face, the first part has enough length to effectively overlap with the inner wall or end face of the upper interface, thereby providing sufficient penetration space and material support for welding (especially when welding from the outside), avoiding weld penetration or insufficient strength due to excessive wall thickness, and also providing a structural basis for possible internal sealing.

[0012] In some implementations, the included angle between the first part and the second part ranges from 80° to 100°.

[0013] By adopting the above technical solution, this angle range allows the bent portion to form a clearly defined right angle or near-right angle guide structure, which facilitates stamping and provides clear positioning during assembly. An angle that is too large or too small will affect assembly convenience or structural stability after assembly; this range represents the optimal balance between manufacturability and functionality.

[0014] In some implementations, the included angle between the first part and the second part is 90°.

[0015] Among the above technical solutions, right-angle bending is the preferred implementation method. The right-angle structure ensures that the upper and lower shells meet in a standard vertical abutment, resulting in the most accurate and stable positioning. This greatly simplifies the production and assembly process, promotes consistency in mass production, and evenly distributes stress.

[0016] In some implementations, the outer side of the mating point between the upper interface and the lower interface has a continuous annular weld bead to seal and fix the upper shell and the lower shell together.

[0017] By adopting the above technical solution, the continuous annular weld bead achieves a full-circumferential, uninterrupted metallurgical bond between the upper and lower shells, ensuring absolute sealing and extremely high structural strength. This effectively prevents liquid leakage and withstands various stresses and thermal shocks during use. Furthermore, the continuous weld bead facilitates complete concealment of the joint after grinding, enhancing the overall visual appeal and performance.

[0018] In some embodiments, the bottom surface of the cup bottom is stamped upward to form a concave mounting portion, which is connected to the extension portion and has a through hole in the center.

[0019] By adopting the above technical solution, the recessed assembly section creates a concealed and neat installation space for components such as the heating element, thermostat, power interface, and anti-slip pad on the bottom of the cup without increasing the overall height of the cup body, thus optimizing the internal layout of the cup body. The central through hole facilitates the passage of wires or other functional connections, making the cup body particularly suitable for products such as electric kettles that require built-in electrical components.

[0020] In some implementations, the bottom of the cup has a closed structure.

[0021] By adopting the above technical solution, another simplified embodiment is provided. The closed cup bottom structure is simple, requires no additional functional openings, and is suitable for ordinary cups that do not require built-in heating functions or as a backup component for electric cups, thus broadening the application range of this cup structure.

[0022] In some implementations, the lower shell sidewall is provided with an inwardly recessed mounting groove, and the bottom of the mounting groove is provided with a mounting hole.

[0023] By adopting the above technical solution, the mounting groove design allows the connectors for accessories such as the power interface and control panel to be embedded within the cup wall, avoiding protrusions on the smooth outer surface of the cup and maintaining a streamlined appearance. The mounting holes are used for secure connections; this design ensures that accessories are firmly installed while further enhancing the integrated visual effect of the cup and improving safety during use.

[0024] Secondly, this application provides an electric heating cup, including the cup body of the first aspect.

[0025] By adopting the above technical solution, the cup body, which features a seamless integrated appearance, excellent sealing properties, and structural strength, is applied to the electric heating cup, significantly improving its overall quality. The aesthetically pleasing appearance enhances product competitiveness, the seamless structure facilitates cleaning and meets the high hygiene standards for food contact containers, while the reliable connection strength better adapts to temperature changes and mechanical loads during operation.

[0026] In summary, this application has at least one of the following beneficial technical effects: 1. Achieved true visual integration: By concealing the connecting structure and designing the outer contour of the docking point to match, after welding and polishing, the outer surface of the cup is smooth and continuous without any seams or steps, achieving a high-end appearance effect as if it were molded as one piece, greatly enhancing the product's aesthetics and texture.

[0027] 2. Completely eliminates hygiene dead spots: Due to the seamless outer surface and smooth transition at the joints, dirt and liquid have nowhere to stay, making it easy to clean and wipe, which significantly improves the hygiene level and safety of the cup.

[0028] 3. Enhanced structural reliability and sealing: The unique bend and extension design, combined with the outer ring welding, forms a reliable connection with high strength and good sealing, which can effectively withstand internal pressure, thermal shock and mechanical stress in daily use.

[0029] 4. Optimized functional integration and assembly: The design of the concave assembly part at the bottom of the cup and the mounting groove on the side wall provides a concealed and neat space for the installation of electrical components and external accessories. While realizing multiple functions, it perfectly maintains the simple and smooth external shape of the cup body, reflecting good industrial design. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the external structure of the cup body according to the first embodiment of this application; Figure 2 This is an exploded structural diagram of the first embodiment of the cup body of this application; Figure 3 This is a cross-sectional schematic diagram of the first embodiment of the cup body of this application; Figure 4 yes Figure 3 Enlarged diagram of area A in the middle; Figure 5 yes Figure 3 Enlarged diagram of area B in the middle; Figure 6 This is a schematic diagram of the structure of the second embodiment of the cup body of this application; Figure 7 This is a cross-sectional schematic diagram of the second embodiment of the cup body of this application; Figure 8 yes Figure 7 Enlarged diagram of area C; Figure 9 This is a schematic diagram of the assembly structure of the cup body according to the second embodiment of this application; Figure 10 This is a schematic diagram of the exploded structure of the cup body in this application; Figure 11 This is a schematic diagram of the external structure of the electric heating cup in this application; Figure 12 This is a schematic diagram of the cross-sectional structure of the electric heating cup in this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Upper shell; 11. Cup mouth; 12. Lower interface; 121. Bending part; 1211. First part; 1212. Second part; 2. Lower shell; 21. Upper interface; 22. Cup bottom; 221. Extension part; 222. Assembly part; 23. Through hole; 24. Mounting groove; 241. Mounting hole; 3. Weld bead; 4. Panel; 5. Power interface; 6. Base plate; 7. Cup lid; 8. Battery; 9. Heating element. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0036] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0037] Example 1

[0038] Please see Figures 1 to 5 This application provides a cup body, which is cylindrical or nearly cylindrical in shape and is assembled and sealed by a unique connection structure of an upper shell 1 and a lower shell 2. The following provides a detailed description of each component and its connection relationship.

[0039] Please see Figures 1-3 The upper shell 1 is a one-piece molded thin-walled metal component, preferably made of food-grade stainless steel through a stamping and stretching process. A cup opening 11 is provided at its top for liquid to enter or exit the cup or for attaching a lid. The bottom of the upper shell 1 is the connecting end, specifically a lower interface 12. The end of this lower interface 12 is integrally formed with an annular bend 121 that bends towards the central axis of the cup body through a secondary stamping or rolling process.

[0040] The lower shell 2 is also a one-piece molded thin-walled metal component, with materials and processes matching those of the upper shell 1. Its top has an upper interface 21 that mates with the upper shell 1, and its bottom forms a cup bottom 22. The cup bottom 22 is bent inward to form an extension 221, which is connected to the side wall of the lower shell 2 via an arc transition. The inner diameter of the upper interface 21 is slightly larger than the outer diameter of the lower interface 12 of the upper shell 1, allowing the inner sidewall of the upper interface 21 to fit tightly against and abut against the outer sidewall of the lower interface 12.

[0041] Please see Figure 3 and Figure 4The annular bend 121 has an L-shaped radial cross-section and is composed of an integrally connected first part 1211 and second part 1212. The first part 1211 starts from the end edge of the lower interface 12 and extends horizontally radially into the cup body, with its extension distance precisely designed. The second part 1212 is perpendicularly connected to the end of the first part 1211 and extends along the axial direction of the cup body away from the upper cup opening 11. The included angle between the first part 1211 and the second part 1212 is preferably 90°, but can vary between 80° and 100° within the manufacturing tolerance range. The horizontal extension distance of the first part 1211 is designed to be no less than the wall thickness of the corresponding connection part of the lower shell 2. This design ensures sufficient overlap and support area with the upper interface 21 of the lower shell 2, reducing the probability of the lower shell 2 protruding from the surface of the upper shell 1 and causing uneven appearance. The outer contour of the upper interface 21 area of ​​the lower shell 2 matches the outer contour of the lower interface 12 area of ​​the upper shell 1. Welding is performed at the joint where the upper shell 1 and the lower shell 2 connect to form a continuous annular weld bead 3.

[0042] Please see Figure 5 The structure of the cup bottom 22 can be configured according to functional requirements. In this embodiment, the cup bottom 22 bends inward to form an extension 221, and the central area of ​​the extension 221 is formed upward by a stamping process to create a concave mounting part 222. The mounting part 222 is approximately a circular recess, and a through hole 23 is provided in the center of its bottom wall. This structure is particularly suitable for cups that require a built-in heating module or temperature sensor, and the through hole 23 can be used for wiring or installing internal components. If applied to ordinary water cups or thermos cups that do not require built-in functions, the cup bottom 22 can be directly set as a complete flat closed structure without stamping out the mounting part 222 and the through hole 23.

[0043] Referring to the above figures, during assembly, the annular bent portion 121 of the upper shell 1 is inserted into the upper interface 21 of the lower shell 2 until the lower surface of the first part 1211 contacts the end face of the upper interface 21. At this point, the outer side wall of the second part 1212 forms a tight fitting with the inner side wall of the upper interface 21. The key point is that the outer contour of the upper interface 21 area of ​​the lower shell 2 and the outer contour of the lower interface 12 area of ​​the upper shell 1 are designed to have the same curvature and diameter, so that after docking, the contour line at the joint appears continuous and smoothly transitioned from the outside, with no obvious steps or gaps.

[0044] Subsequently, the welding process is carried out. The welding point is located on the outer periphery of the joint between the upper shell 1 and the lower shell 2. Specifically, the welding torch is used to weld around the cup body along the joint. The welding heat melts and fuses the base material at the contact edge of the lower interface 12 of the upper shell 1 and the upper interface 21 of the lower shell 2, forming a continuous, uniform, and closed annular weld bead 3 after cooling. This weld bead 3 permanently and airtightly connects the upper shell 1 and the lower shell 2 into one unit. Since the outer contours were smoothly matched before the joint, and the welding is a precision machining process, the weld bead 3 itself is relatively small and flat. After possible slight polishing, the outer surface of the cup body can achieve a near-seamless integrated appearance.

[0045] This embodiment achieves the following significant technical effects through the construction of "internal L-shaped bend 121 butt joint + external precision welding": improved aesthetics, seamless and smooth outer surface; easy to clean, with no exposed gaps or weld scars; reliable structure, with the L-shaped bend 121 providing axial positioning and radial support, combined with full-circumference welding, resulting in high connection strength and excellent sealing performance; good processability, with components easy to process and simple assembly.

[0046] Example 2

[0047] Please see Figures 6 to 10 Based on the basic structure of the cup body described above, this embodiment expands the function of the lower shell 2 to add additional functions to the cup body or facilitate integration with other components.

[0048] The main difference in this embodiment is that at least one inwardly recessed mounting portion is machined on the side wall of the lower shell 2. This mounting portion can be a partially recessed mounting groove 24. The bottom of the mounting groove 24 is substantially parallel to the outer surface of the cup body, and one or more mounting holes 241 are formed at the center of the bottom of the groove.

[0049] The mounting groove 24 can be located at any height on the side wall of the lower shell 2, typically determined by the accessory to be installed. Its shape can be rectangular, circular, elliptical, or other shapes adapted to the required mounting component. The depth of the recess should provide sufficient installation space without significantly weakening the strength of the cup body's side wall. The mounting hole 241 is used for the passage of connecting wires to electrically connect the control panel to internal components, and the mounting groove 24 securely fixes the control panel and other external accessories to the cup body. The mounting groove 24 can be integrally formed with the lower shell 2 using a stamping process, ensuring structural strength and preventing leakage.

[0050] Please see Figure 8 The mounting groove 24 is located below the bent portion 121, and a safe distance is provided between the bent portion 121 and the mounting groove 24 to avoid assembly interference.

[0051] This design allows the cup to maintain its seamless appearance and excellent sealing while gaining modular expansion capabilities, enhancing the product's versatility and customization potential.

[0052] Please see Figure 9 and Figure 10 The lower shell 2 has two mounting slots 24 on its side wall, which are respectively fitted with the control panel 4 and the power interface 5. After the control panel 4 and the power interface 5 are assembled with the lower shell 2, their outer surfaces are basically flush, which does not affect the overall appearance. The mounting part 222 at the bottom of the lower shell 2 is fitted with a base plate 6 to close the through hole 23. An anti-slip pad can be set on the bottom surface of the base plate 6. After the anti-slip pad is installed, it protrudes slightly from the lower shell 2 so that the anti-slip pad can make full contact when the cup is placed, so as to achieve an anti-slip effect.

[0053] Example 3

[0054] Please see Figure 11 and Figure 12 This embodiment applies the cup structure of the aforementioned embodiments to a specific product—an electric heating cup—to demonstrate its integration in an actual end product.

[0055] The electric heating cup provided in this embodiment includes a cup body consisting of an upper shell 1 and a lower shell 2 welded together as a container, a cup lid 7 assembled on the upper shell 1, and a functional module built into the cup body. The cup lid 7 can be connected to the upper cup opening 11 by means of threads, snaps, or hinges. All internal components are encapsulated within the space formed by the seamless cup body and the cup lid 7.

[0056] The cup body mainly integrates the following modules: heating element 9, which can be a thick film heating sheet, tubular heater or heating plate, preferably attached or installed on the inner surface of the cup bottom 22; battery 8, which can be 8 sets of rechargeable lithium-ion batteries for power supply in mobile scenarios; control circuit board, which integrates circuits such as temperature control, power regulation, battery 8 management and user interface control; power interface 5 (such as Type-C interface or DC round hole interface) is set on the lower part of the outer side of the cup body or the cup bottom 22, which can connect an external power adapter to charge the battery 8. When necessary, the battery 8 inside the cup can be used as a mobile power source to discharge external devices such as mobile phones through this interface and supporting circuit, which greatly enhances the practical value of the product.

[0057] Please see Figure 10 and Figure 12 If a cup bottom 22 structure with mounting groove 24 and through hole 23 is adopted, it will be beneficial to the internal assembly layout of the electric heating cup. The cavity formed by the mounting groove 24 provides space for installing control components, and the through hole 23 facilitates the installation and removal of the internal heating element 9 and battery 8.

[0058] This electric kettle fully utilizes the advantages of a seamless cup body: safe and hygienic, with a smooth and seamless inner wall that is easy to clean; robust structure with high strength at the cup body joints; exquisite appearance, with a seamless outer shell that gives the product a high-end, simple, and modern aesthetic while also facilitating heat preservation; and high functional integration, with a unique cup bottom and side wall structure that provides convenience for the installation of internal components and the expansion of external functions.

[0059] This electric heating cup inherits all the advantages of the aforementioned seamless, easy-to-clean, and aesthetically pleasing design, while also achieving a high degree of integration and concealment of functional components through its special structural design. All electrical and heating components are cleverly concealed, with only a simple and streamlined integrated cup body and a delicate power interface visible externally. This completely overturns the bulky image of traditional electric heating cups with exposed components, numerous seams, and difficulty in cleaning. At the same time, the robust welded structure ensures that the connections will not leak or loosen due to thermal expansion and contraction under repeated heating and cooling thermal cycles, providing double protection for the product's durability and safety.

[0060] 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, modifications, substitutions, and variations can be made to this utility model without departing from its spirit and scope, and all such changes, modifications, substitutions, and variations fall within the scope of the claimed utility model.

Claims

1. A cup body, characterized in that, include: The upper shell has a cup mouth and a lower interface, wherein the lower interface forms an annular bend that bends toward the inside of the cup body; The lower shell has an upper interface and a cup bottom. The upper interface is connected to and welded to the annular bend of the upper shell. The cup bottom has an extension extending into the inner side of the cup body. The bottom surface of the cup bottom is stamped upward to form a concave assembly part, which is connected to the extension part. The side wall of the lower shell has an inwardly recessed mounting groove, and the bottom of the mounting groove has a mounting hole. The outer contour of the upper interface area of ​​the lower shell matches the outer contour of the lower interface area of ​​the upper shell; the annular bend provides an axial positioning surface and a radial limiting surface for the upper interface of the lower shell.

2. The cup body according to claim 1, characterized in that, The bending portion includes an integrally connected first part and a second part. The first part extends a distance into the upper shell, and the second part is connected to the first part and extends axially away from the cup opening. The inner surface of the upper interface abuts against the second part.

3. The cup body according to claim 2, characterized in that, The distance by which the first part extends into the upper shell is not less than the wall thickness of the upper interface.

4. The cup body according to claim 2, characterized in that, The included angle between the first part and the second part is in the range of 80°-100°.

5. The cup body according to claim 4, characterized in that, The angle between the first part and the second part is 90°.

6. The cup body according to claim 1, characterized in that, The outer side of the mating point between the upper interface and the lower interface has a continuous annular weld bead, which seals and fixes the upper shell and the lower shell together.

7. The cup body according to claim 1, characterized in that, The assembly part has a through hole in the center.

8. The cup body according to claim 1, characterized in that, The bottom of the cup has a closed structure.

9. An electric heating cup, characterized in that, Includes the cup body as described in any one of claims 1-8.

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