Children bowl with high-sealing waterproof structure

Abstract

The utility model provides a children bowl with a high-sealing waterproof structure, which comprises a shell, an inner container arranged in the shell and an electrical component arranged in the shell, and a bearing step is arranged at the upper end of the shell; a flanging part matched with the bearing step is arranged at the upper end of the inner container; the sealing element is fixed at the upper end of the shell; and the sealing piece is combined with the bearing step of the shell through a welding process, and the flanging part of the inner container is packaged between the sealing piece and the bearing step, so that waterproof sealing is formed. According to the utility model, an independent sealing piece is adopted and is combined with the shell through a welding process, so that the flanging part of the inner container is completely packaged in a rigid and integrated structural body. According to the structural sealing, a water leakage channel is fundamentally eliminated, the waterproof performance and the reliability of the structure greatly exceed those of a traditional buckle or a scheme depending on an elastic sealing ring, and the IPX7 waterproof grade can be achieved.

Description

[Technical Field]

[0001] This utility model relates to the field of children's tableware technology, and in particular to a children's bowl with a highly sealed and waterproof structure. [Background Technology]

[0002] In modern children's tableware design, to achieve intelligent functions such as constant temperature heating, cooling, or temperature display, electrical components are usually integrated into the bowl structure. This requires a long-term, reliable waterproof seal between the outer shell and the inner liner of the bowl to protect these internal functional components.

[0003] To address this problem, several solutions have been proposed in the prior art. For example, Chinese utility model patent CN222737635U discloses a children's bowl with cooling and heat preservation functions. This design includes an outer shell and an inner liner housed therein, forming a closed cavity. To seal the joint between the outer shell and the top of the inner liner, the patent proposes a specific sealing structure: the top outer edge of the outer shell is set as a ramp, while the top outer edge of the inner liner has a corresponding groove. The waterproof seal is achieved by using an independent sealing ring between the ramp and the groove.

[0004] Analysis of this existing technology reveals that its sealing approach relies on the direct fit between the outer shell and the inner liner, and its reliability depends entirely on the elastic deformation of the sealing ring itself. This approach has inherent limitations: as the core sealing element, the sealing ring inevitably ages, hardens, or loses elasticity after repeated cleaning, disassembly, and exposure to alternating hot and cold temperatures, leading to a decline in sealing performance. Furthermore, in daily use, this independent sealing ring may be forgotten or misplaced by the user, directly causing waterproofing failure and posing a risk of damage to internal components. [Utility Model Content]

[0005] The purpose of this utility model is to provide a children's bowl with a high-sealing and waterproof structure, which aims to solve the technical problems in the prior art, such as unreliable sealing performance, limited service life, and the risk of leakage failure due to assembly errors or component aging caused by the use of non-permanent connection methods such as mechanical snap-fit ​​or elastic sealing rings between the outer shell and inner liner of the children's bowl.

[0006] This utility model is achieved through the following technical solution:

[0007] A children's bowl with a highly sealed and waterproof structure includes an outer shell, an inner liner disposed within the outer shell, and electrical components disposed within the outer shell. The upper end of the outer shell is provided with a support step.

[0008] The upper end of the inner liner is provided with a flange that cooperates with the supporting step;

[0009] It also includes a seal, which is fixed to the upper end of the housing;

[0010] The sealing element is joined to the load-bearing step of the outer shell by a welding process, and the flange of the inner liner is encapsulated therein to form a waterproof seal.

[0011] As described above, the child bowl with a highly sealed and waterproof structure includes an integrally formed first annular step and a second annular step, with the bottom of the seal fused to the upper end of the second annular step.

[0012] The children's bowl with a high-sealing and waterproof structure as described above includes an annular flange and an annular protrusion disposed on the outside of the annular flange. The annular protrusion corresponds to the first annular step and is encapsulated between the second annular step and the sealing member.

[0013] As described above, the children's bowl with a highly sealed and waterproof structure has an L-shaped connection structure between the annular flange and the annular protrusion.

[0014] The children's bowl with a highly sealed and waterproof structure as described above, wherein the seal is a pressure sleeve that matches the upper contour of the outer shell.

[0015] As described above, the children's bowl with a high-sealing and waterproof structure has a coupling part on the upper part of the pressure sleeve facing the inner end of the inner liner. The bottom of the coupling part is fused to the bearing step, and the side end of the coupling part is attached to the side end of the flange.

[0016] The children's bowl with a highly sealed and waterproof structure as described above uses a high-frequency hot-melt welding process.

[0017] The children's bowl with a highly sealed and waterproof structure as described above, wherein the seal and the outer shell are made of PP (polypropylene) material.

[0018] The children's bowl with a highly sealed and waterproof structure as described above has a handle on the seal for gripping.

[0019] As described above, the children's bowl with a highly sealed and waterproof structure has a sealing element facing the inner side of the inner liner and corresponding to the position of the handle, and an assembly part for positioning and guiding is provided on the upper part of the outer shell and the assembly part.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention employs an independent sealing element, which is welded to the outer shell, completely encapsulating the inner liner's flanged portion within a rigid, integrated structure. This structural seal fundamentally eliminates leakage channels, significantly surpassing traditional snap-fit ​​or elastic sealing ring-based solutions in terms of waterproof performance and reliability, achieving an IPX7 waterproof rating. Secondly, the absence of easily aging or deformable elastic components, coupled with the higher overall structural strength after welding, significantly enhances the product's long-term durability and lifespan. More importantly, this one-time, permanent encapsulation structure eliminates the risk of human error, such as forgetting to install or misalignment, after user cleaning, ensuring high consistency and reliability of the waterproof function throughout the product's entire lifespan. [Attached Image Description]

[0022] To more clearly illustrate the technical solutions in the embodiments of the utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0024] Figure 2 This is an exploded view of the structure of this embodiment;

[0025] Figure 3 This is a top view of this embodiment;

[0026] Figure 4 for Figure 3 sectional view along line AA;

[0027] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 This is an exploded view of the assembly of the seal and the housing in this embodiment.

Detailed Implementation Methods

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of this utility model will be provided in conjunction with the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and to simplify 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. Therefore, they should not be construed as limitations on this utility model.

[0030] Please see the appendix Figure 1-6This embodiment proposes a children's bowl with a highly sealed and waterproof structure. Its basic components include a hollow outer shell 1, an inner liner 2 that can be assembled inside the outer shell 1, an electrical component 3 housed in the lower part of the outer shell 1, and a sealing element 4 for final sealing.

[0031] The lower inner part of the outer casing 1 can accommodate conventional electrical components 3, such as circuit boards and sensors used for constant temperature heating or temperature display. To prevent liquid from seeping into the joint between the outer casing 1 and the metal inner liner 2 during daily cleaning or use, thereby causing short circuits or damage to the internal electrical components 3, the core of this utility model lies in providing an innovative waterproof sealing solution.

[0032] Specifically, the upper end of the outer shell 1 is provided with an integrally formed support step 11 for supporting and positioning the inner liner 2. The inner liner 2 is preferably made of food-grade stainless steel to ensure safety and hygiene. The upper end of the inner liner 2 is provided with an integrally formed flange 21, which structurally cooperates with the support step 11. The sealing member 4 is structurally fixed to the upper end of the outer shell 1 and is permanently bonded to the support step 11 of the outer shell 1 through a welding process, and firmly encapsulates the flange 21 of the inner liner 2 therein, thereby forming a high-strength, highly airtight waterproof seal.

[0033] Compared to existing technologies that typically employ non-permanent connection methods such as mechanical snap-fits or elastic sealing rings, this structural sealing solution fundamentally eliminates leakage channels. Its waterproof performance and reliability significantly surpass traditional snap-fit ​​or elastic sealing ring-based solutions, achieving an IPX7 waterproof rating. Secondly, the absence of easily aging or deformable elastic components, coupled with the higher overall structural strength after welding, significantly enhances the product's long-term durability and lifespan. More importantly, this one-time permanent sealing structure eliminates the risk of human error, such as forgetting to install or misalignment, after user cleaning, ensuring high consistency and reliability of the waterproof function throughout the product's entire lifespan.

[0034] Furthermore, as a preferred embodiment, to achieve more reliable positioning, support, and sealing effects, the supporting step 11 specifically includes an integrally formed first annular step 111 and a second annular step 112 positioned relatively higher. Correspondingly, the flange 21 is also designed with a precisely fitting structure, specifically including an annular flange 211 and an integrally formed, bent annular protrusion 212 on the outer periphery of the annular flange 211. During assembly, the annular protrusion 212 corresponds to and firmly rests on the first annular step 111, providing initial radial and axial positioning for the inner liner 2. Subsequently, during welding, the bottom of the sealing member 4 is welded to the upper end face of the second annular step 112. This structure ensures that the annular protrusion 212 is securely sealed between the second annular step 112 and the sealing member 4, forming an extremely stable mechanical lock and physical seal.

[0035] Furthermore, as an optional implementation, in order to optimize stress distribution and ensure a tighter fit between the flange 21 and the housing 1 and the seal 4, the connection structure between the annular flange 211 and the annular protrusion 212 is L-shaped or approximately L-shaped. This near-right-angle structure not only makes the contact surfaces between components more regular, easier to process and assemble, but also enhances the structural rigidity of the flange 21 itself by changing the cross-sectional shape, making it less prone to deformation during the encapsulation process.

[0036] Furthermore, the sealing element 4 is specifically a pressure sleeve 41. The overall outline of the pressure sleeve 41 matches the outline of the upper part of the outer shell 1. For example, if the outline of the upper part of the outer shell 1 is circular, then the overall outline of the pressure sleeve 41 can also be a corresponding circle. After welding, the two can form a smooth transition in appearance, ensuring the integrity and aesthetics of the product.

[0037] Furthermore, to achieve precise welding and fitting, the upper part of the pressure sleeve 41, facing the inner end of the inner liner 2, is integrally formed with a downwardly extending coupling portion 411, which can also be understood as a welding portion. The bottom of this coupling portion 411 is the part that welds with the second annular step 112 in the bearing step 11. At the same time, in the assembled state, the side end face of the coupling portion 411 fits tightly with the side end of the flange portion 21, which, in addition to transmitting the clamping force, also provides further lateral support and sealing.

[0038] Furthermore, as a preferred embodiment, the seal 4 and the outer shell 1 are preferably made of PP (polypropylene) material. PP material has excellent chemical stability, toughness, and cost advantages, making it very suitable for use in children's tableware.

[0039] Furthermore, as a preferred embodiment, another innovation of this embodiment lies in the use of a unique welding process to solve the problem of permanent sealing of PP (polypropylene) materials under gapless precision fit. In this embodiment, the welding process is described in detail:

[0040] In this embodiment, the seal 4 and the bearing step 11 are tightly fitted together, without any energy guiding ribs or gaps reserved for conventional ultrasonic welding, and conventional high-frequency dielectric welding cannot directly heat the PP material. Therefore, the welding process in this embodiment is preferably a special high-frequency induction welding process. The specific steps of this process are as follows:

[0041] S1. Setting the heating medium: Before assembling the inner liner 2 and the sealing element 4 onto the outer shell 1, a ring-shaped induction heating flux is pre-set on the bearing step 11 of the outer shell 1, specifically the second annular step 112. This flux is a conventional technique in the art, such as a ring of polymer material compatible with the PP substrate containing ferrite or metal particles.

[0042] S2. Precision assembly: Subsequently, the inner liner 2 and the seal 4 are assembled in sequence, so that the flux is tightly clamped between the seal 4 and the bearing step of the outer shell 1.

[0043] S3. Induction Heating: Finally, a high-frequency electromagnetic field is applied to the welding area using a high-frequency induction device. This electromagnetic field can penetrate the PP material and selectively and extremely rapidly heat the flux in the middle, causing its temperature to instantly reach above the melting point of PP.

[0044] S5. Conductive Welding and Encapsulation: High-temperature flux melts the adjacent PP material, namely the outer shell step and the surface layer of the seal bottom, through heat conduction. Under external pressure, the molten PP material fuses with the flux and re-solidifies, ultimately forming a dense, completely welded composite seal, encapsulating the flanged portion 21 of the metal inner liner 2 within it. This process not only solves the welding problem of PP material, but also, due to the high concentration of heat at the welding interface, the process is rapid and has minimal thermal impact on other parts of the bowl. It should be understood that although the above-described high-frequency induction welding is a preferred solution for PP material in this embodiment, the scope of protection of this utility model is not limited thereto.

[0045] As another optional implementation, if the seal 4 and the outer shell 1 are made of polar plastics such as EVA (ethylene-vinyl acetate copolymer) that are sensitive to high-frequency electromagnetic fields, they can be directly fused using a traditional high-frequency hot melt process, such as high-frequency dielectric welding, in which case there is no need to add the aforementioned induction heating flux.

[0046] Furthermore, to facilitate user gripping, especially for children, the sealing element 4, i.e. the pressure sleeve 41, is integrally formed with two symmetrically arranged handles 42 for gripping.

[0047] Furthermore, as a preferred positioning structure, to ensure that the pressure sleeve 41 can be accurately aligned in one go during the assembly process before welding, an assembly part 421 for positioning and guidance can be provided on the inner side of the sealing element 4 facing the inner liner 2 and corresponding to the handle 42. Specifically, it can be a protrusion or a rib. Correspondingly, an assembly groove 12 matching the assembly part 421 is provided on the upper part of the outer shell 1. During installation, simply align the assembly part 421 with the assembly groove 12 and insert it to achieve quick and accurate circumferential positioning, providing a positional reference for subsequent welding processes, improving production efficiency and product consistency.

[0048] In addition, to achieve complete tableware functionality, the children's bowl in this embodiment also includes a detachable end cap 7 located above the outer shell 1. This end cap 7 can cover the upper opening formed by the sealing element 4 and the inner liner 2, serving to prevent dust, provide short-term heat preservation, and prevent food from splashing out during movement. The end cap 7 can be made of elastic materials such as silicone, achieving a sealed connection through an elastic interference fit with the inner or outer wall of the bowl.

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

Claims

1. A child bowl having a high sealing waterproof structure, comprising an outer shell (1), an inner container (2) arranged in the outer shell (1), and an electrical component (3) arranged in the outer shell (1), characterized in that, The upper end of the outer shell (1) is provided with a support step (11). The upper end of the inner liner (2) is provided with a flange (21) that cooperates with the bearing step (11). It also includes a seal (4), which is fixed to the upper end of the outer shell (1); The sealing element (4) is combined with the bearing step (11) of the outer shell (1) by a welding process, and the flange (21) of the inner liner (2) is encapsulated therein to form a waterproof seal.

2. The child bowl having a high sealing waterproof structure according to claim 1, characterized in that, The bearing step (11) includes an integrally formed first annular step (111) and second annular step (112), and the bottom of the seal (4) is fused to the upper end of the second annular step (112).

3. The child bowl having a high sealing waterproof structure according to claim 2, characterized in that, The flange (21) includes an annular flange (211) and an annular protrusion (212) disposed on the outside of the annular flange (211). The annular protrusion (212) corresponds to the first annular step (111) and is encapsulated between the second annular step (112) and the seal (4).

4. The child bowl having a high sealing waterproof structure according to claim 3, characterized in that, The connection structure between the annular flange (211) and the annular protrusion (212) is L-shaped.

5. The child bowl having a high sealing waterproof structure according to claim 1, characterized in that, The sealing element (4) is a pressure sleeve (41) that matches the upper contour of the outer shell (1).

6. The child bowl having a high sealing waterproof structure according to claim 5, characterized in that, The upper part of the pressure sleeve (41) is provided with a coupling part (411) facing the inner end of the inner liner (2). The bottom of the coupling part (411) is fused with the bearing step (11) as one piece. The side end of the coupling part (411) is attached to the side end of the flange part (21).

7. The child bowl having a high sealing waterproof structure according to claim 1, characterized in that, The welding process is a high-frequency hot melt process.

8. The child bowl having a high sealing waterproof structure according to claim 1, characterized in that, The seal (4) and the outer shell (1) are made of PP (polypropylene) material.

9. The child bowl having a high sealing waterproof structure according to claim 1, characterized in that, The seal (4) is provided with a handle (42) for gripping.

10. The child bowl having a high sealing waterproof structure according to claim 9, characterized in that, The sealing element (4) is provided with an assembly part (421) for positioning and guiding, facing the inner side of the inner liner (2) and corresponding to the position of the handle (42). The upper part of the outer shell (1) is provided with a corresponding assembly groove (12) to the assembly part (421).

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