Connecting structure for electric kettle and electric kettle thereof

Abstract

The utility model discloses a connecting structure for an electric kettle and the electric kettle thereof, and belongs to the technical field of electric kettles.The connecting structure comprises an upper kettle body, a lower kettle body and a heating disc, the upper kettle body and the lower kettle body are combined to form the kettle body, the heating disc is installed in the kettle body, a flanging part matched with the inner wall of the kettle body is arranged on the edge of the heating disc, and the upper kettle body is connected with the lower kettle body. The lower side of the flanging part is fixedly connected with the inner wall of the lower kettle body, the upper kettle body is connected to the upper side of the flanging part in a sleeved mode, and the upper kettle body and the lower kettle body are connected in a welded mode. The electric kettle can solve the problem that the joint of the upper kettle body and the lower kettle body of the existing electric kettle is prone to dislocation and deformation in the welding process, and effectively reduces the production problem that the reject ratio of products is high due to water leakage of the kettle bodies after welding.

Description

Technical Field

[0001] This utility model relates to the field of electric kettle technology, specifically to a connection structure for an electric kettle and the electric kettle thereof. Background Technology

[0002] As a household appliance, the electric kettle has become an indispensable drinking water tool in modern homes and offices due to its features of quickly boiling water and easy operation. It rapidly heats water to boiling using a built-in heating element, meeting users' immediate need for hot water and is widely used in various scenarios such as brewing tea, making coffee, and cooking noodles.

[0003] However, a pressing technical challenge in the production of electric kettles is the structural stability of the connection between the upper and lower kettle bodies. Due to limitations in design or manufacturing processes, this crucial connection often suffers from misalignment and deformation. Specifically, mismatched thermal expansion coefficients of the materials, uneven assembly pressure, or insufficient mold precision can cause slight shifts or twists in the upper and lower kettle bodies during assembly. This structural defect directly leads to a decrease in the kettle's sealing performance, making it prone to leakage after connection.

[0004] Leaks not only affect the appearance of electric kettles but also seriously threaten their safety and durability. Prolonged leakage can lead to short circuits due to moisture in the internal circuitry, even posing a risk of electric shock. Simultaneously, moisture corrodes internal components, accelerating product aging and shortening its lifespan. From a manufacturing perspective, this defect directly increases the product defect rate, rework costs, and material waste, significantly hindering a company's economic benefits and market competitiveness. Utility Model Content

[0005] In order to solve the technical problems existing in the background art, one of the objectives of this utility model is to provide a connection structure for an electric kettle, including an upper kettle body, a lower kettle body and a heating plate. The upper kettle body and the lower kettle body are combined to form a kettle body. A flange is provided on the edge of the heating plate. The lower side of the flange is fixedly connected to the inner wall of the lower kettle body. The upper kettle body is sleeved on the upper side of the flange. The upper kettle body and the lower kettle body are welded together.

[0006] As a preferred option, the flanged part has a structure that gradually narrows from top to bottom.

[0007] As a preferred option, the flange angle of the flanged part is 70-90°.

[0008] As a preferred option, the lower side of the flanged part is welded to the inner wall of the lower body of the pot.

[0009] As a preferred option, the heating plate has a boss structure in the middle.

[0010] As a preferred option, the shape and size of the connection between the upper and lower body of the pot are matched.

[0011] As a preferred option, the upper body, lower body, and heating plate are made of stainless steel or titanium.

[0012] As a preferred option, the shape and size of the flanged part are matched with the shape and size of the inner wall of the pot body.

[0013] To solve the above-mentioned technical problems, the second objective of this utility model is to provide an electric kettle that includes the connection structure of the above-mentioned technical solution.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The appearance of the upper and lower body of the pot can be smoothly transitioned, maintaining the original contour curve of the pot body;

[0016] 2. The weld seam between the upper and lower kettle bodies is located in the middle of the flange of the heating plate, which cleverly avoids the problem of internal weld marks on the upper and lower kettle bodies being visible from the inside after welding and being difficult to remove by grinding, thus eliminating the need for secondary polishing and saving production costs;

[0017] 3. The heating plate also serves as a support in the structure, preventing deformation and misalignment of the upper and lower kettle bodies during welding due to lack of support, which could lead to poor appearance and leakage, thus improving the product's stability and pass rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the connection structure for an electric kettle according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a top view of the connection structure for an electric kettle according to Embodiment 1 of this utility model;

[0021] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0023] Figure 5 This is an exploded view of the connection structure for an electric kettle according to Embodiment 1 of this utility model;

[0024] Figure 6 This is a perspective view of the heating plate of Embodiment 1 of this utility model.

[0025] In the picture:

[0026] 1-Upper body; 2-Lower body; 3-Heating plate; 31-Flanged edge; 32-Boss structure; 4-Weld seam; 5-Spout. Detailed Implementation

[0027] The present invention is further illustrated below with reference to embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Experimental methods in the following embodiments without specific conditions are generally performed under conventional conditions in the art or as recommended by the manufacturer; the raw materials and reagents used, unless otherwise specified, are all commercially available from the conventional market. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention are within the scope of protection claimed by the present invention.

[0028] Example 1

[0029] This embodiment provides a connection structure for an electric kettle, such as... Figure 1-6As shown, the connecting structure includes an upper kettle body 1, a lower kettle body 2, and a heating plate 3. The upper kettle body 1 and the lower kettle body 2 are combined to form the kettle body. The heating plate 3 is installed inside the kettle body. The edge of the heating plate 3 is provided with a flange 31 that matches the inner wall of the kettle body. The lower side of the flange 31 is fixedly connected to the inner wall of the lower kettle body 2. The upper kettle body 1 is fitted onto the upper side of the flange 31. The upper kettle body 1 and the lower kettle body 2 are welded together to form a weld seam 4. In addition, a spout 5 is provided on the kettle body. The technical solution of this embodiment creatively solves the industry pain point of easy misalignment and deformation at the connection between the upper and lower kettle bodies of electric kettles by using a structure in which the flange supports the connection of the kettle body. Its core innovation lies in the flanged edge of the heating plate, which serves as a structural carrier, acting as both an internal support and a connecting component. Its lower side achieves a stable fit by matching the curved structure of the lower kettle's inner wall, forming a rigid connection through welding, significantly improving the deformation resistance of the connection area. Simultaneously, the upper side of the flanged edge fits into the upper kettle body, forming a positioning reference. Using the heating plate as a rigid intermediary, the upper kettle body is pre-positioned before welding, effectively avoiding the misalignment risk caused by direct docking of the upper and lower kettle bodies in traditional assembly. The welding process only needs to be performed at the joint between the upper and lower kettle bodies, simplifying the process and, through the structural reinforcement of the heating plate's flanged edge, evenly distributing welding stress and avoiding deformation problems caused by localized stress concentration. This solution creatively integrates the connection function with the heating plate structure, constructing a triple protection system of "rigid support + surface bonding + pre-positioning": the flanged part acts as a structural skeleton to provide rigid support, the surface bonding design ensures reliable sealing, and the pre-positioning mechanism eliminates assembly errors. The synergistic effect of these three elements fundamentally eliminates the physical root cause of misalignment and deformation at the weld seam. This design significantly reduces the production defect rate through structural optimization, providing a dual technological breakthrough for electric kettle manufacturing that simplifies processes and improves quality.

[0030] In terms of specific connection structure, the flange of the heating plate will have different designs depending on the shape of the inside of the kettle body. Preferably, in this embodiment, the flange 31 has a structure that gradually narrows from top to bottom. The above-mentioned preferred structure has many significant advantages in the connection structure of electric kettles. From the perspective of structural mechanics, this narrowing design can enhance the structural strength of the flange. During the operation of the electric kettle, certain pressure and temperature changes will occur inside. The gradually narrowing flange acts as a wedge-shaped support structure, which can better withstand the pressure from the upper and lower kettle bodies, effectively reducing the loosening or deformation of the connection caused by pressure. For example, when the electric kettle boils water, the pressure generated by the thermal expansion of the water will be evenly distributed on the narrowed flange, reducing local stress concentration and thus improving the stability of the entire connection structure. From the perspective of assembly process, the narrowing structure provides a good guiding role for the fitting of the upper kettle body. During assembly, the upper kettle body can slide smoothly along the gradually narrowing flange, achieving precise positioning, greatly reducing the assembly difficulty and improving production efficiency. Meanwhile, this design also helps ensure the precision of the fit between the upper body and the flange, reducing assembly errors and making the connection tighter. In terms of sealing performance, the narrowed flange forms a tighter contact surface when it fits with the upper and lower bodies. This tight contact helps improve the sealing effect, preventing leaks during boiling and ensuring the kettle's normal operation and user safety. Furthermore, the gradually narrowing structure reduces material usage, lowering production costs while maintaining functionality, aligning with the lightweight and economical principles of modern product design.

[0031] Preferably, the flange angle α of the flanged portion 31 is 70-90°. This flange angle is obtained by molding with a mold of a corresponding angle. When the flange angle is within this range, it can provide a suitable support angle. Under the pressure inside the electric kettle, the 70-90° angle allows the flanged portion to more effectively transfer the pressure to the lower kettle body, disperse the pressure, reduce local stress concentration, thereby enhancing the stability of the structure and reducing the risk of deformation or damage to the flanged portion. From the perspective of sealing effect, this angle range helps to form a good sealing surface. In addition, the 70-90° angle also has advantages in manufacturing. It facilitates the design and processing of molds, can ensure the dimensional accuracy and shape consistency of the flanged portion, and improve production efficiency and quality stability. At the same time, this angle range also takes into account the fit relationship with the upper and lower kettle bodies, making the assembly process smoother, reducing assembly errors, and further improving the overall performance of the electric kettle. In this embodiment, the flange angle α is approximately 72°.

[0032] Preferably, the lower side of the flange 31 is welded to the inner wall of the lower kettle body 2. The welded connection is characterized by high strength, ensuring a firm connection between the flange and the lower kettle body. Under frequent use and internal pressure, this firm connection effectively prevents loosening or separation, ensuring the structural stability of the kettle. From a sealing perspective, the welded connection creates a continuous, seamless connection surface, avoiding the micro-gaps that may exist in traditional connection methods, thus greatly improving sealing performance. Even under high internal pressure during the kettle's boiling process, there will be no leakage, ensuring normal use of the kettle and user safety.

[0033] Preferably, the heating plate 3 has a boss structure 32 in the middle. This boss structure, as a further preferred embodiment, plays a crucial role in the electric kettle. The boss structure increases the contact area between the heating plate and the water. During operation, a larger contact area means more efficient heat transfer, allowing the water to reach boiling point faster, improving heating efficiency, and saving energy. From a structural stability perspective, the boss structure enhances the strength of the heating plate. Under the high temperature and pressure environment inside the electric kettle, the boss structure can distribute stress, reducing deformation of the heating plate due to thermal expansion or pressure, ensuring the flatness and normal function of the heating plate. For example, when the electric kettle is heated for a long time, the boss structure can withstand more heat and pressure, preventing the heating plate from warping or being damaged.

[0034] Preferably, the shape and size of the connection between the upper body 1 and the lower body 2 are matched. Matching shape and size ensures precise alignment of the upper and lower bodies during connection. During assembly, this matching relationship reduces assembly errors, makes the connection tighter, and improves the overall sealing performance of the electric kettle. From an appearance perspective, a matched connection makes the electric kettle more aesthetically pleasing and neat, without obvious gaps or inconsistencies, enhancing the product's market competitiveness. During consumer use, a good appearance also provides a better user experience. Furthermore, a matched connection reduces production difficulty and costs. In mold design and manufacturing, a matching shape and size connection makes standardized production easier, improving production efficiency, reducing scrap rates, and lowering production costs.

[0035] Preferably, the upper kettle body 1, lower kettle body 2, and heating plate 3 are made of stainless steel. Stainless steel has excellent corrosion resistance, resisting acidic substances and impurities in water, ensuring that the electric kettle will not be corroded or damaged during long-term use, thus extending its service life. From a hygiene perspective, stainless steel has a smooth surface, is easy to clean, does not easily breed bacteria, meets the safety standards for food contact materials, and can guarantee the hygienic quality of drinking water. When users use the electric kettle to boil water, the safety of the water will not be affected by material issues.

[0036] The manufacturing process of the connection structure for the electric kettle in this embodiment includes the following steps:

[0037] Prepare the upper body 1, the lower body 2, and the heating plate 3;

[0038] Step 1: The lower side of the flange 31 of the heating plate 3 is embedded into the inner wall of the lower pot body 2. The lower pot body 2 and the heating plate 3 are assembled and pressed together using a clamp.

[0039] Step 2: The lower body 2 and the heating plate 3 are fixedly connected to obtain the pre-assembled part;

[0040] Step 3: The upper body 1 is fitted onto the upper side of the flange 31 of the pre-assembled part, so that the upper body 1 and the lower body 2 are combined to form the body. The clamp is used to assemble and press the upper body 1 and the pre-assembled part together.

[0041] Step 4: Weld the upper body 1 and the lower body 2 together.

[0042] Step 5: Polish and grind the welded joint between the upper body 1 and the lower body 2 to obtain the connection structure for the electric kettle.

[0043] The aforementioned connection structure for electric kettles allows for a smooth transition between the upper and lower kettle bodies, maintaining the original kettle's contour curves. Furthermore, the weld seam between the upper and lower kettle bodies is located in the middle of the heating plate's flange, cleverly avoiding the problem of visible internal weld marks after welding, which are difficult to remove through grinding. This eliminates the need for secondary polishing, saving production costs. Since the heating plate also acts as a support in the structure, it prevents deformation and misalignment of the connection points during welding due to lack of support, thus avoiding problems such as poor appearance and leaks. The defect rate has been significantly reduced from the original 8-10% to less than 0.5%, significantly improving product stability and yield.

[0044] Example 2

[0045] The electric kettle provided in this embodiment includes the connection structure for electric kettles as described in Embodiment 1. The resulting electric kettle has the same advantages as Embodiment 1. The appearance of the kettle body can be smoothly transitioned, maintaining the contour curve of the original product kettle body. Moreover, it solves the production problem of water leakage caused by misalignment at the connection point.

[0046] Comparative Example 1

[0047] The difference from Embodiment 1 is that the lower side of the flange is fixedly connected to the inner wall of the lower pot body, and the upper pot body is not sleeved on the upper side of the flange but is directly welded to the lower pot body.

[0048] The weld marks from the final butt welds on the teapot body are discontinuous with the original curves and cannot be completely corrected by polishing, resulting in a transitional mark on the teapot's exterior. Furthermore, some products experienced deformation during welding due to a lack of support, leading to misalignment at the joints and leaks, resulting in a defect rate of 8-10%.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A connection structure for an electric kettle, characterized in that: It includes an upper body (1), a lower body (2) and a heating plate (3), wherein the upper body (1) and the lower body (2) are combined to form the body of the pot; The heating plate (3) has a flange (31) on its edge. The lower side of the flange (31) is fixedly connected to the inner wall of the lower pot body (2). The upper pot body (1) is fitted onto the upper side of the flange (31). The upper pot body (1) and the lower pot body (2) are welded together.

2. The connection structure for an electric kettle according to claim 1, characterized in that: The flange (31) has a structure that gradually narrows from top to bottom.

3. The connection structure for an electric kettle according to claim 2, characterized in that: The included angle of the flange (31) is 70-90°.

4. The connection structure for an electric kettle according to claim 1, characterized in that: The lower side of the flange (31) and the inner wall of the lower body (2) are welded together.

5. The connection structure for an electric kettle according to claim 1, characterized in that: The heating plate (3) has a boss structure (32) in the middle.

6. The connection structure for an electric kettle according to claim 1, characterized in that: The shape and size of the connection between the upper body (1) and the lower body (2) are matched.

7. The connection structure for an electric kettle according to claim 1, characterized in that: The upper body (1), lower body (2) and heating plate (3) are made of stainless steel or titanium.

8. The connection structure for an electric kettle according to claim 1, characterized in that: The shape and size of the flange (31) match the shape and size of the inner wall of the pot body.

9. An electric kettle, comprising the connection structure described in any one of claims 1-8.

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