Waterproof structure of cooking utensil
By employing a multi-layered sealing structure and adhesive fixing between the bracket and the outer shell in the cooking appliance, the problem of electrical malfunctions caused by water overflow is solved, achieving a waterproof effect and improving the safety and durability of the induction cooker.
Patent Information
- Application Number
- CN202423322644.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing cooking appliances are prone to water overflow during use, which can cause steam or liquid to enter the interior, potentially leading to electrical malfunctions, corrosion, or safety hazards, especially damaging the electronic components of induction cookers.
The bracket and the outer shell adopt a multi-layer sealing structure, including a combination design of stepped sealing surface, annular sealing rib and fastener. The first fixing part of the bracket is embedded in the second fixing part of the outer shell to form a multi-layer waterproof structure. Combined with glue fixation, it ensures a tight connection between the panel and the outer shell.
It effectively prevents water vapor or liquid from entering the interior of cooking appliances, protects electrical safety, reduces the risk of electrical malfunction, extends service life, improves cleaning efficiency, and enhances product aesthetics and durability.
Smart Images
Figure CN223958639U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof technology for cooking utensils, and in particular to a waterproof structure for cooking utensils. Background Technology
[0002] Many cooking appliances may come into contact with water during use, such as electric pressure cookers, rice cookers, and induction cookers. Therefore, it is very important to prevent water from entering the interior of cooking appliances and to ensure safety, durability, and functionality during use. Induction cookers, as cooking appliances, use alternating current to generate an alternating magnetic field with constantly changing direction through a coil. Eddy currents will appear inside the conductor in the alternating magnetic field. The Joule heating effect of the eddy currents will heat the conductor, thereby achieving heating.
[0003] During the use of an induction cooker, water inevitably overflows and flows into the inside of the cooker. This places high demands on the waterproof performance of the induction cooker. If water vapor or liquid enters the electronic parts of the induction cooker, it may cause electrical malfunctions, short circuits, or other safety hazards. Utility Model Content
[0004] The main purpose of this invention is to provide a waterproof structure for cooking utensils, designed to prevent water vapor or liquid from entering the interior of the cooking utensils.
[0005] To achieve the above objectives, this utility model proposes a waterproof structure for a cooking appliance, comprising a panel, a support, and a housing. The support is placed between the housing and the panel and is used to fix the housing and the panel. The support is provided with a first sealing part and a first fixing part. The housing is provided with a second sealing part and a second fixing part. The first fixing part is embedded in the second fixing part and fixed to the second fixing part, so that the first sealing part presses against the second sealing part.
[0006] In one embodiment, the first sealing portion is stepped.
[0007] In one embodiment, the first sealing part is provided with a first sealing surface and a second sealing surface, and the second sealing part is provided with a third sealing surface and a sealing rib. The first sealing surface presses against the third sealing surface, and the second sealing surface presses against the sealing rib.
[0008] In one embodiment, the sealing rib is annular.
[0009] In one embodiment, the first fixing part is provided with a fixing post, and the second fixing part is provided with a first fixing groove, wherein the fixing post is placed in the first fixing groove.
[0010] In one embodiment, the waterproof structure includes a fixing member, a second fixing groove is provided in the fixing post, the first fixing groove is provided with a fixing hole, and the fixing member is connected to the fixing post by passing through the fixing hole and into the second fixing groove.
[0011] In one embodiment, a groove is provided on the side of the bracket that connects to the panel, the groove being used to inject adhesive and form an adhesive layer between the bracket and the panel.
[0012] In one embodiment, an overflow groove is provided on the side of the bracket that connects to the panel, and the groove is located on the outside of the overflow groove.
[0013] In one embodiment, the fixing post, the second sealing surface, and the first sealing surface are arranged sequentially from the inside to the outside on the side of the bracket away from the panel.
[0014] In one embodiment, the second fixing part, the sealing rib, and the third sealing surface are arranged sequentially from the inside to the outside on the outer casing.
[0015] This utility model uses a bracket to fix the outer shell and the panel. The first fixing part of the bracket is embedded in the second fixing part of the outer shell. The bracket and the panel are fixedly connected to form the first layer of waterproofing. The bracket and the outer shell are fixed by the first fixing part and the second fixing part, so that the first sealing part of the bracket squeezes the second sealing part of the outer shell to achieve the second layer of waterproofing, which effectively prevents water vapor or liquid from entering the interior of the cooking appliance. Attached Figure Description
[0016] 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 the structures shown in these drawings without creative effort.
[0017] Figure 1 A cross-sectional view of a cooking utensil;
[0018] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0019] Figure 3 This is a structural diagram of the panel and the outer casing;
[0020] Figure 4 This is a front view of the bracket;
[0021] Figure 5 This is a reverse view of the bracket.
[0022] Explanation of icon numbers:
[0023] 1-Panel, 2-Bracket, 21-First sealing part, 211-First sealing surface, 212-Second sealing surface, 22-First fixing part, 221-Fixing post, 2211-Second fixing groove, 23-Groove, 24-Overflow groove, 3-Outer shell, 31-Second sealing part, 311-Third sealing surface, 312-Sealing rib, 32-Second fixing part, 321-First fixing groove, 3211-Fixing hole, 4-Fixing component.
[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0028] This utility model proposes a waterproof structure for cooking utensils.
[0029] In the embodiments of this utility model, such as Figure 1 , Figure 2 , Figure 5 As shown, Figure 1 This is a cross-sectional view of a cooking utensil. Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Figure 5 The diagram shows the reverse side of the support 2. The waterproof structure of this cooking appliance includes a panel 1, a support 2, and a housing 3. The support 2 is placed between the housing 3 and the panel 1 and is used to fix the housing 3 and the panel 1. The support 2 is provided with a first sealing part 21 and a first fixing part 22. The housing 3 is provided with a second sealing part 31 and a second fixing part 32. The first fixing part 22 is embedded in the second fixing part 32 and fixed to the second fixing part 32, so that the first sealing part 21 presses against the second sealing part 31.
[0030] This utility model uses a bracket 2 to fix the outer shell 3 and the panel 1. The first fixing part 22 of the bracket 2 is embedded in the second fixing part 32 of the outer shell 3. The bracket 2 and the panel 1 are fixedly connected to form the first layer of waterproofing. The bracket 2 and the outer shell 3 are fixed by the first fixing part 22 and the second fixing part 32, so that the first sealing part 21 of the bracket 2 squeezes the second sealing part 31 of the outer shell 3 to achieve the second layer of waterproofing, which effectively prevents water vapor or liquid from entering the interior of the cooking appliance. The bracket 2 and the panel 1 are fixed by injecting glue between the bracket 2 and the panel 1. In this embodiment, the cooking appliance can be an induction cooker, a heating base of a health pot, or other cooking appliances.
[0031] During cooking, water vapor, oil droplets, or liquids may splash from the cookware or condense due to heating. If these liquids enter the induction cooker, they may cause short circuits, corrosion, or even malfunctions or fires in electrical components. The waterproof structure of this embodiment can effectively prevent this. The circuit boards, electromagnetic coils, and control components inside the induction cooker are generally sensitive to moisture, and moisture entry increases the risk of electrical malfunction. The waterproof seal can effectively prevent moisture from penetrating these components, thereby protecting the safety and performance of the appliance. The waterproof seal can reduce the corrosion of the induction cooker surface by moisture, prevent aging at the joint between the panel 1 and the outer shell 3, and extend the service life of the induction cooker. The waterproof seal creates a tighter connection between the induction cooker panel 1 and the outer shell 3, preventing liquids from entering hard-to-clean gaps, thereby improving cleaning efficiency and convenience. The waterproof seal can also effectively prevent accidental entry of external water sources, preventing users from touching the electrical components inside the induction cooker during cleaning or use, and reducing the risk of electric shock.
[0032] Taking an induction cooker as an example, the panel 1 can be a circular glass plate, while the support 2 is a circular plastic support 2 that matches the size of the panel 1. The outer shell 3 also uses a circular plastic support 2 that matches the support 2. Circular designs often give a simple and smooth visual impression, enhancing the product's aesthetics and conforming to modern home appliance design trends. Compared to square or rectangular shapes, circles generally appear softer and more design-oriented. The circular design of the induction cooker panel 1 helps distribute heat more evenly, especially for round cookware, better adapting to the heating area and avoiding localized overheating or uneven heating. The circular glass panel 1 and support 2 design reduces unnecessary corners, maximizing the use of the heating area and preventing reduced heating efficiency due to wasted space at the edges. The design of the support 2 and outer shell 3 enhances structural stability. Compared to a four-corner support design, the circular plastic support 2 distributes stress more effectively, avoiding concentrated local pressure and enhancing the induction cooker's durability and shock resistance. Circular and annular components are easier to mass-produce and assemble in production, reducing complex processes, thereby lowering production costs and improving efficiency. The width of the annular bracket 2 is greater than the width of the surface on the outer shell 3 that connects to the bracket 2, preventing adhesive overflow into the interior of the outer shell 3. The design of the circular panel 1 and bracket 2 reduces areas where dust accumulates at sharp corners and edges, making cleaning easier and avoiding negative impacts on the user experience due to hard-to-clean corners.
[0033] The first sealing portion 21 is stepped. The first sealing portion 21 is provided with a first sealing surface 211 and a second sealing surface 212, such as... Figure 3 As shown, Figure 3 The diagram shows the structure of panel 1 and outer shell 3. The second sealing part 31 is provided with a third sealing surface 311 and a sealing rib 312. The first sealing surface 211 presses against the third sealing surface 311, and the second sealing surface 212 presses against the sealing rib 312.
[0034] In this embodiment, the first sealing surface 211 and the second sealing surface 212 are not on the same plane and have a certain height difference. Similarly, the third sealing surface 311 and the sealing rib 312 are not on the same plane and have a certain height difference. The first sealing part 21 has a stepped design, which improves the sealing effect and durability between the bracket 2 and the outer shell 3. The stepped structure of the first sealing part 21 can provide a more uniform pressure distribution at the sealing part between the bracket 2 and the outer shell 3, avoiding excessive compression of a single sealing surface, thereby improving the sealing effect. The stepped design of the first sealing part 21 helps to effectively prevent liquid leakage, because each segment of the step can play a step-by-step separation role, reducing the path of liquid leakage. The stepped structure of the first sealing part 21 can disperse pressure, reduce wear on a single contact surface, thereby extending the service life of the first sealing part 21. The stepped seal of the first sealing part 21 can provide better adaptability under high temperature or high pressure conditions, avoiding sealing failure caused by temperature or pressure changes. Due to the stepped graded design of the first sealing part 21, the first sealing part 21 can deform more uniformly when subjected to pressure, avoiding excessive deformation leading to poor sealing.
[0035] The first sealing surface 211 presses against the third sealing surface 311, ensuring no leakage between the bracket 2 and the outer shell 3, thus achieving a preliminary seal. The third sealing surface 311 contacts the first sealing surface 211, while the sealing rib 312 is typically used to enhance the sealing effect. The second sealing surface 212 presses against the sealing rib 312, further strengthening the contact surface between the bracket 2 and the outer shell 3, preventing liquid leakage.
[0036] The sealing rib 312 is annular. The annular design of the sealing rib 312 primarily enhances the sealing effect and improves the durability and adaptability of the outer casing 3. The annular sealing rib 312 provides pressure to the second sealing surface 212, ensuring close contact between the sealing rib 312 and the second sealing surface 212, thereby effectively preventing liquid leakage into the cooking appliance. The annular design can evenly distribute the pressure of the second sealing part 31, avoiding localized excessive pressure that could lead to seal failure or deformation. The annular sealing rib 312 enhances the overall sealing capability of the cooking appliance through continuous pressure distribution; the annular sealing rib 312 helps the seal adapt to different temperature and pressure changes, ensuring good sealing performance even under extreme conditions; the annular sealing rib 312 disperses friction, thereby extending the service life of the seal; the annular sealing rib 312 provides additional support to the seal, preventing the second fixing part 32 from failing due to deformation or displacement under high pressure or high temperature environments; by providing multiple contacts or separations, the annular sealing rib 312 can effectively reduce the leakage path of the medium along the gap between the support 2 and the outer casing 3, thereby improving the reliability of the seal.
[0037] The first fixing part 22 is provided with a fixing post 221, and the second fixing part 32 is provided with a first fixing groove 321, wherein the fixing post 221 is placed in the first fixing groove 321. The waterproof structure includes a fixing member 4, wherein the fixing post 221 is provided with a second fixing groove 2211, and the first fixing groove 321 is provided with a fixing hole 3211. The fixing member 4 is connected to the fixing post 221 by passing through the fixing hole 3211 and into the second fixing groove 2211.
[0038] The fixing method between the first fixing part 22 and the second fixing part 32 can be selected as an interference fit between the fixing post 221 and the first fixing groove 321, or a fixing member 4 can be provided to fix the first fixing part 22 and the second fixing part 32. The fixing method between the first fixing part 22 and the second fixing part 32 can also be a snap-fit connection or other connection methods. The fixing member 4 connects to the fixing post 221 by passing through the fixing hole 3211 and into the second fixing groove 2211, providing an effective seal during connection to prevent moisture or other liquids from penetrating into the interior, thereby achieving a waterproof effect. The fixing member 4 can be a screw. 4. The fixing hole 3211 and the second fixing groove 2211 are interference-fitted; or the inner wall of the fixing hole 3211 and the inner wall of the second fixing groove 2211 are provided with threads. The first fixing part 22 and the second fixing part 32 are fixed by screws and threads. The first fixing part 22 is tightened by screws at the position of the second fixing part 32. Longitudinal extrusion pressure is formed at the first sealing surface 211, the third sealing surface 311, the second sealing surface 212, and the sealing rib 312 to achieve waterproofing. In this embodiment, multiple fixing columns 221 can be provided on the inner surface of the bracket 2 to enhance the connection stability between the bracket 2 and the outer shell 3.
[0039] like Figure 4 As shown, Figure 4 This is a front view of the bracket 2. A groove 23 is provided on the side where the bracket 2 is connected to the panel 1. The groove 23 is used to inject glue and form a glue layer between the bracket 2 and the panel 1 (not shown in the figure). The bracket 2 and the panel 1 are fixed by glue. In order to prevent glue overflow, an overflow groove 24 is provided on the side where the bracket 2 is connected to the panel 1. The groove 23 is located on the outside of the overflow groove 24. Both the groove 23 and the overflow groove 24 are annular, and the diameter of the groove 23 is larger than the diameter of the overflow groove 24.
[0040] When bonding glass panel 1 and plastic bracket 2, choosing the right adhesive is crucial because glass and plastic have different material properties, and therefore require different adhesives. Here are some types of adhesives suitable for bonding glass and plastic:
[0041] 1. Epoxy Resin
[0042] Features: Epoxy resin adhesive is a two-component adhesive, typically composed of resin and a curing agent. It possesses extremely high bonding strength and is suitable for a variety of materials, including glass and plastics. After curing, epoxy resin adhesive exhibits water resistance, heat resistance, and chemical resistance. Advantages: Strong adhesion, suitable for various plastics (such as ABS, PVC, polycarbonate, etc.) and glass; high hardness and durability after curing.
[0043] 2. Silicone Adhesive
[0044] Features: Silicone adhesives possess excellent elasticity, temperature resistance, and water resistance, making them suitable for bonding various materials. They effectively fill gaps in joints and maintain stable performance at both high and low temperatures. Advantages: Good water resistance, high elasticity, suitable for applications requiring long-term sealing, and good adhesion to most plastics and glass.
[0045] 3. Acrylic Adhesive
[0046] Features: Acrylic adhesives typically feature fast curing, high transparency, and strong adhesion, making them suitable for bonding glass and plastics. They are commonly used in applications requiring high transparency, such as windows or display cases. Advantages: Fast curing, good transparency, suitable for highly transparent surfaces, and does not compromise aesthetics.
[0047] 4. Polyurethane Adhesive
[0048] Features: Polyurethane adhesive has good bonding strength and can adapt to temperature changes. It is suitable for a variety of materials, including plastics and glass, and has good elasticity after curing. Advantages: Water-resistant, heat-resistant, and has good toughness after curing, making it suitable for environments that need to withstand a certain amount of impact and tension.
[0049] 5. UV adhesive (ultraviolet curing adhesive)
[0050] Features: UV adhesive is a type of glue that cures rapidly under ultraviolet light. It is typically transparent and exhibits excellent adhesion and weather resistance after curing. It is ideal for bonding glass and plastics where a transparent, clean appearance is required. Advantages: Fast curing time, high transparency, suitable for applications with high aesthetic requirements.
[0051] 6. Super Glue / Cyanoacrylate
[0052] Features: Instant adhesive is a fast-curing, one-component glue suitable for bonding small areas. It has strong adhesion to glass and some plastics (such as ABS).
[0053] Advantages: Cures quickly, easy to use, suitable for quick repair of small-area bonding needs.
[0054] The choice of materials can be made based on the specific requirements. For bonding transparent glass panels, UV adhesive or acrylic adhesive is recommended, as both provide a clear and transparent bond. For high-strength bonding, epoxy resin or polyurethane adhesive is suggested, as they offer higher bonding strength and durability. If elasticity and water resistance are required, silicone adhesive can also be considered.
[0055] The fixing post 221, the second sealing surface 212, and the first sealing surface 211 are arranged sequentially from the inside to the outside on the side of the bracket 2 away from the panel 1. This helps to ensure multi-layered protection of the waterproof structure, preventing moisture or liquid from seeping into the interior of the cooking appliance through different sealing surfaces, forming an additional protective barrier to ensure that external liquids cannot penetrate into the interior of the cooking appliance from the gap between the outer shell 3 and the bracket 2. The second fixing part 32, the sealing rib 312, and the third sealing surface 311 are arranged sequentially from the inside to the outside on the outer shell 3. The third sealing surface 311, the first sealing surface 211, the second sealing surface 212, and the sealing rib 312 are located on the outermost side of the cooking appliance, blocking liquid from entering from the gap between the bracket 2 and the outer shell 3. The fixing post 221 and the second fixing part 32 are located next to the second sealing surface 212 and the sealing rib 312, which helps to enhance the overall strength of the sealing system and ensure the stability and effectiveness of the sealing surfaces, thereby providing better waterproofing. The reasonable arrangement enhances the waterproofing performance and ensures that moisture cannot enter sensitive areas through gaps. This sequential design is more conducive to waterproofing.
[0056] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A waterproof structure for a cooking utensil, characterized in that, The device includes a panel, a bracket, and a housing. The bracket is placed between the housing and the panel and is used to fix the housing and the panel. The bracket is provided with a first sealing part and a first fixing part. The housing is provided with a second sealing part and a second fixing part. The first fixing part is embedded in the second fixing part and fixed to the second fixing part, so that the first sealing part presses against the second sealing part.
2. The waterproof structure as described in claim 1, characterized in that, The first sealing part is stepped.
3. The waterproof structure as described in claim 1, characterized in that, The first sealing part is provided with a first sealing surface and a second sealing surface, and the second sealing part is provided with a third sealing surface and a sealing rib. The first sealing surface presses against the third sealing surface, and the second sealing surface presses against the sealing rib.
4. The waterproof structure as described in claim 3, characterized in that, The sealing rib is ring-shaped.
5. The waterproof structure as described in claim 3, characterized in that, The first fixing part is provided with a fixing post, and the second fixing part is provided with a first fixing groove, wherein the fixing post is placed in the first fixing groove.
6. The waterproof structure as described in claim 5, characterized in that, The waterproof structure includes a fastener, a second fixing groove is provided in the fixing column, the first fixing groove is provided with a fixing hole, and the fastener is connected to the fixing column by passing through the fixing hole and into the second fixing groove.
7. The waterproof structure as described in claim 1, characterized in that, The bracket has a groove on the side where it connects to the panel. The groove is used to inject glue and form a glue layer between the bracket and the panel.
8. The waterproof structure as described in claim 7, characterized in that, An overflow groove is provided on the side of the bracket that connects to the panel, and the groove is located on the outside of the overflow groove.
9. The waterproof structure as described in claim 5, characterized in that, The fixing column, the second sealing surface, and the first sealing surface are arranged sequentially from the inside to the outside on the side of the bracket away from the panel.
10. The waterproof structure as described in claim 3, characterized in that, The second fixing part, the sealing rib, and the third sealing surface are arranged sequentially from the inside to the outside on the outer shell.