A sealing mechanism for an electric pressure cooker

Abstract

This utility model relates to the field of pressure cooker sealing technology, and more particularly to a sealing mechanism for an electric pressure cooker. The technical solution includes: an unlocking button installed on the top cover; a sealing plate installed at the bottom of the top cover; a rubber sealing edge on the edge of the sealing plate, the rubber sealing edge consisting of a lower edge, a side edge, and an upper edge; the lower edge covering the upper edge of the inner lining of the pressure cooker; the side edge covering the inner edge of the inner lining of the pressure cooker; the rubber sealing edge connected to the sealing plate via the upper edge; a latch located on the inner surface of the top cover; and a hinge on the side of the top cover opposite the unlocking button. This utility model achieves pressure-adaptive sealing through a unique three-way structure of the rubber sealing edge, combined with a buffer chamber; and ensures precise locking and safe unlocking through a linkage mechanism between the unlocking button and the latch, as well as a wedge-shaped inclined surface design, thereby improving sealing performance and safety.

Description

Technical Field

[0001] This utility model relates to the field of pressure cooker sealing technology, specifically to a sealing mechanism for an electric pressure cooker. Background Technology

[0002] Currently, as a highly efficient cooking appliance, the performance of the sealing mechanism of an electric pressure cooker directly affects cooking results and user safety. Most existing electric pressure cookers use a single flat rubber sealing ring, achieving a seal simply by having its top edge adhere to the inner pot. However, this structure has significant drawbacks: firstly, the flat seal cannot effectively cope with pressure fluctuations inside the pot. When steam pressure rises, the sealing ring is prone to displacement or localized deformation, leading to steam leakage. This not only reduces cooking efficiency but may also pose a risk of burns. Secondly, traditional sealing structures lack cushioning design; frequent pressure impacts accelerate the aging and damage of the rubber material, shortening the lifespan of the sealing ring and increasing user maintenance costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a sealing mechanism for an electric pressure cooker, which solves the problems mentioned in the background art.

[0004] The solution of this utility model to the above-mentioned technical problems is as follows:

[0005] An electric pressure cooker sealing mechanism includes a top cover, an unlocking button installed on the top cover, and a sealing plate installed at the bottom end of the top cover;

[0006] The sealing plate has a rubber sealing edge, which consists of a lower edge, a side edge, and an upper edge. The lower edge covers the upper edge of the inner pot of the pressure cooker, and the side edge covers the inner edge of the inner pot of the pressure cooker. The rubber sealing edge is connected to the sealing plate through the upper edge. The unlocking button is located on the inner surface of the top cover and has a latch. The top cover has a hinge on the side opposite to the unlocking button.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the upper edge is inclined upwards, the lower edge is inclined downwards, and a buffer cavity is formed between the lower edge and the upper edge, the buffer cavity being used to buffer the deformation of the rubber sealing edge.

[0009] The beneficial effects of adopting the above-mentioned further solutions are:

[0010] The buffer chamber utilizes the elastic deformation properties of rubber to dynamically absorb the impact force generated by pressure changes inside the pot. When the electric pressure cooker heats up and pressurizes, the steam pressure pushes the lower edge and sides to squeeze the inner pot, causing the buffer chamber to deform under pressure, preventing the rubber sealing edge from tearing or hardening due to excessive force. When the pressure decreases, the buffer chamber returns to its original shape, preventing the sealing edge from loosening and causing air leakage. This adaptive buffer design effectively extends the service life of the rubber sealing edge while maintaining the sealing stability throughout the cooking process, avoiding steam leakage caused by pressure fluctuations, and improving cooking efficiency and food taste.

[0011] Furthermore, the side edge is fitted to the inner surface of the pressure cooker's inner pot.

[0012] The beneficial effects of adopting the above-mentioned further solutions are:

[0013] The tight fit between the sides and the outer surface of the inner liner forms a three-dimensional, surrounding seal. Compared to traditional methods that rely solely on the top edge for sealing, the side seal blocks steam escape from the side. Especially when the pressure inside the pot rises sharply, the sides are pressed even tighter against the inner liner, forming a double protective barrier together with the lower edge, significantly improving the sealing effect. Simultaneously, the pre-fitting design of the sides allows for quick positioning of the top cover when closed, reducing sealing adjustment time and improving operational convenience.

[0014] Furthermore, the surface of the rubber sealing edge is provided with anti-slip texture, which is distributed in a wavy pattern along the circumference of the rubber sealing edge to increase the friction with the inner liner of the pressure cooker.

[0015] The beneficial effects of adopting the above-mentioned further solutions are:

[0016] The wavy anti-slip texture significantly enhances the contact resistance between the sealing edge and the inner pot surface. During high-pressure cooking, steam pressure can easily cause lateral displacement of the sealing edge. The anti-slip texture effectively prevents the sealing edge from sliding and misaligning by increasing friction, avoiding air leakage caused by misalignment. In addition, the wavy structure can also form tiny steam barrier spaces in the textured recesses, further blocking steam leakage channels, while dispersing the concentrated pressure on the sealing edge, reducing the risk of localized wear, and improving the reliability and durability of the sealing structure.

[0017] Furthermore, the end of the latch is provided with a wedge-shaped inclined surface, and the inner surface of the top cover is provided with a guide groove corresponding to the latch position. The unlock button is connected to the latch through a linkage mechanism. When the unlock button is pressed, the linkage mechanism drives the latch to slide along the guide groove. The wedge-shaped inclined surface cooperates with the fastening part on the inner liner of the pressure cooker to achieve locking and unlocking.

[0018] The beneficial effects of adopting the above-mentioned further solutions are:

[0019] The wedge-shaped bevel and guide groove work together to achieve efficient operation with automatic alignment and precise locking. During the lid closing process, the wedge-shaped bevel automatically guides the latch to slide into the inner pot's locking part, eliminating the need for manual calibration by the user and reducing operational complexity. The guide groove ensures the latch's sliding trajectory is precise, preventing locking failure or jamming due to misalignment. When the unlock button is pressed, the linkage mechanism drives the latch to smoothly disengage along the guide groove, avoiding damage to components caused by brute force disassembly. In addition, this structure uses a mechanical interlocking mechanism, ensuring that the lock is only released when the unlock button is triggered, effectively preventing accidental opening of the lid during cooking and providing users with double safety protection.

[0020] This utility model provides a sealing mechanism for an electric pressure cooker. It has the following beneficial effects:

[0021] The inclined upper and lower edges of the rubber sealing edge, combined with the surrounding side structure, form a three-dimensional sealing system. During heating and pressurization, the steam pressure pushes the lower edge and side edges to press against the inner pot edge, and the elastic deformation of the buffer chamber absorbs pressure fluctuations, achieving dynamic adaptive sealing. This design not only copes with pressure changes at different cooking stages, but also increases friction with the inner pot through the wavy anti-slip texture, preventing the sealing edge from sliding and shifting, effectively reducing steam leakage, improving cooking efficiency and sealing performance, and extending the service life of the rubber sealing edge. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the main appearance of the present utility model;

[0025] Figure 2 This is a bottom view of the present invention.

[0026] Figure 3 This is a cross-sectional view of the sealing plate of this utility model;

[0027] Figure 4 For the present utility model Figure 3 Enlarged diagram of point A in the middle.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Top cover; 101. Steam outlet; 102. Hinge; 2. Unlock button; 201. Lock; 3. Sealing plate; 301. Rubber sealing edge; 302. Lower edge; 303. Side; 304. Upper edge; 305. Buffer chamber. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1 to 4 As shown, the embodiments provided by this utility model are as follows:

[0032] Example 1

[0033] An electric pressure cooker sealing mechanism includes a top cover 1, an unlocking button 2 installed on the top cover 1, a sealing plate 3 installed at the bottom of the top cover 1, and a rubber sealing edge 301 on the edge of the sealing plate 3. The rubber sealing edge 301 is composed of a lower edge 302, a side edge 303 and an upper edge 304. The lower edge 302 covers the upper edge of the inner pot of the pressure cooker, and the side edge 303 covers the inner edge of the inner pot of the pressure cooker. The rubber sealing edge 301 is connected to the sealing plate 3 through the upper edge 304. The unlocking button 2 is located on the inner surface of the top cover 1 and has a latch 201. The top cover 1 has a hinge 102 on the side opposite to the unlocking button 2.

[0034] Example 2

[0035] To improve the durability and sealing stability of the rubber sealing edge and optimize the sealing performance of the electric pressure cooker, for example, such as Figures 1 to 4As shown, this utility model also includes: an upper edge 304 inclined upwards, a lower edge 302 inclined downwards, and a buffer cavity 305 formed between the lower edge 302 and the upper edge 304. The buffer cavity 305 is used to buffer the deformation of the rubber sealing edge 301. The buffer cavity 305 utilizes the elastic deformation characteristics of rubber to dynamically absorb the impact force generated by pressure changes inside the pot. When the electric pressure cooker heats up and pressurizes, the steam pressure pushes the lower edge 302 and the side edge 303 to squeeze the inner pot, and the buffer cavity 305 is deformed under pressure, preventing the rubber sealing edge 301 from tearing or hardening due to excessive force. When the pressure is reduced, the buffer cavity 305 returns to its original shape, preventing the sealing edge from loosening and causing air leakage. This adaptive buffer design effectively extends the service life of the rubber sealing edge 301, while maintaining the sealing stability throughout the cooking process, avoiding steam leakage caused by pressure fluctuations, improving cooking efficiency and food taste. The side edge 303 fits against the inner surface of the pressure cooker inner pot, and the close fit between the side edge 303 and the outer surface of the inner pot forms a surrounding three-dimensional sealing structure. Compared to traditional methods that rely solely on top edge sealing, the side seal 303 blocks steam escape paths from the side. Especially when the pressure inside the pot rises sharply, the side seal 303 is pressed even tighter against the inner pot, forming a double protective barrier together with the lower edge 302, significantly improving the sealing effect. Simultaneously, the pre-fitting design of the side seal 303 allows for quick positioning when the top cover 1 is closed, reducing sealing adjustment time and improving operational convenience. The rubber sealing edge 301 has an anti-slip texture, which is wavy and distributed circumferentially along the rubber sealing edge 301 to increase friction with the pressure cooker's inner pot. This wavy anti-slip texture significantly enhances the contact resistance between the sealing edge and the inner pot surface. During high-pressure cooking, steam pressure can easily cause lateral displacement of the sealing edge. The anti-slip texture, by increasing friction, effectively prevents the sealing edge from sliding and misaligning, avoiding steam leakage caused by positional displacement. Furthermore, the wavy structure can also create tiny steam barrier spaces in the textured recesses, further blocking steam leakage channels while dispersing the concentrated pressure on the sealing edge, reducing the risk of localized wear and improving the reliability and durability of the sealing structure.

[0036] Example 3

[0037] To achieve convenient and safe locking of the electric pressure cooker lid to the pot body, simplify the operation process, and enhance safety protection, for example, such as Figures 1 to 4As shown, this utility model also includes: a wedge-shaped inclined surface at the end of the latch 201; a guide groove on the inner surface of the top cover 1 corresponding to the position of the latch 201; and an unlocking button 2 connected to the latch 201 via a linkage mechanism. When the unlocking button 2 is pressed, the linkage mechanism drives the latch 201 to slide along the guide groove. The wedge-shaped inclined surface cooperates with the fastening part on the inner pot of the pressure cooker to achieve locking and unlocking. The cooperation between the wedge-shaped inclined surface and the guide groove achieves efficient operation of automatic alignment and precise locking. During the closing process of the top cover 1, the wedge-shaped inclined surface automatically guides the latch 201 to slide into the fastening part of the inner pot, eliminating the need for manual calibration by the user and reducing operational complexity. The guide groove ensures the accurate sliding trajectory of the latch 201, preventing locking failure or jamming due to misalignment. When the unlocking button 2 is pressed, the linkage mechanism drives the latch 201 to smoothly disengage along the guide groove, avoiding damage to components caused by brute force disassembly. In addition, the structure uses a mechanical interlock mechanism, which can only be unlocked when the unlock button 2 is triggered, effectively preventing accidental opening of the lid during cooking and providing users with double safety protection.

[0038] Working principle:

[0039] When using the electric pressure cooker, first rotate the top cover 1 towards the pot body, achieving initial positioning and alignment with the pot body via the hinge 102 on one side of the top cover 1. At this time, the rubber sealing edge 301 (composed of inclined upper and lower edges 302 and side edge 303) of the sealing plate 3 at the bottom of the top cover 1 is aligned with the edge of the inner pot of the pressure cooker, ready to complete the closure and sealing. The side edge 303 is pre-fitted to the inner edge of the inner pot to provide initial contact for subsequent sealing.

[0040] Continue rotating the top cover 1 until it is completely fitted to the pot body. At this point, the lower edge 302 of the rubber sealing edge 301 covers the upper side of the inner pot edge, and the side edge 303 is tightly fitted to the inner side of the inner pot edge, forming an initial sealing contact. The side edge 303 is tightly fitted to the outer surface of the inner pot, restricting steam from escaping from the side and enhancing the initial sealing effect. The latch 201 on the inner surface of the top cover 1 is linked to the unlocking button 2 via a linkage mechanism. When the top cover 1 is closed in place, the wedge-shaped inclined surface at the end of the latch 201 contacts the fastening part on the inner pot (such as the snap-fit ​​structure on the edge of the pot body). As the top cover 1 rotates, the wedge-shaped inclined surface is pushed by force to slide the latch 201 along the guide groove, and finally the latch 201 engages with the fastening part, realizing the mechanical locking of the top cover 1 and the pot body.

[0041] The upper edge 304 of the rubber sealing edge 301 slopes upward, and the lower edge 302 slopes downward, forming a buffer cavity 305 between them. When the pot begins to heat up and pressurize, the steam pressure acts on the rubber sealing edge 301, pushing the lower edge 302 and the side edge 303 to further press against the edge of the inner pot. At the same time, the buffer cavity 305 undergoes elastic deformation due to pressure, absorbing pressure fluctuations through deformation and enhancing sealing stability. Under pressure, the side edge 303 further adheres to the outer surface of the inner pot, forming a circumferential seal with the lower edge 302, confining steam inside the pot. Simultaneously, the wavy anti-slip texture on the surface of the rubber sealing edge 301 is distributed circumferentially, increasing friction with the inner pot surface and preventing the sealing edge from sliding due to pressure, further improving sealing performance. During cooking, the pot remains under continuous high pressure. The rubber sealing edge 301 maintains a tight fit through its own elasticity and pressure, while the side edge 303 and the lower edge 302 work together. Simultaneously, the deformation capacity of the buffer cavity 305 adapts to pressure changes, ensuring reliable sealing.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealing mechanism for an electric pressure cooker, comprising a top cover (1), an unlocking button (2) mounted on the top cover (1), and a sealing plate (3) mounted on the bottom end of the top cover (1), characterized in that: The sealing plate (3) has a rubber sealing edge (301) on its edge. The rubber sealing edge (301) is composed of a lower edge (302), a side edge (303) and an upper edge (304). The lower edge (302) covers the upper edge of the inner pot of the pressure cooker, and the side edge (303) covers the inner edge of the inner pot of the pressure cooker. The rubber sealing edge (301) is connected to the sealing plate (3) through the upper edge (304). The unlocking button (2) is located on the inner surface of the top cover (1) and has a latch (201). The top cover (1) has a hinge (102) on the side away from the unlocking button (2).

2. The sealing mechanism of an electric pressure cooker according to claim 1, wherein: The upper edge (304) is inclined upward, the lower edge (302) is inclined downward, and a buffer cavity (305) is formed between the lower edge (302) and the upper edge (304). The buffer cavity (305) is used to buffer the deformation of the rubber sealing edge (301).

3. The sealing mechanism of an electric pressure cooker according to claim 1, wherein: The side (303) is in contact with the inner surface of the pressure cooker inner pot.

4. The sealing mechanism of an electric pressure cooker according to claim 1, wherein: The surface of the rubber sealing edge (301) is provided with anti-slip texture, which is wavy and distributed circumferentially along the rubber sealing edge (301) to increase the friction with the inner liner of the pressure cooker.

5. The sealing mechanism of an electric pressure cooker according to claim 1, wherein: The end of the latch (201) is provided with a wedge-shaped inclined surface. The inner surface of the top cover (1) is provided with a guide groove corresponding to the position of the latch (201). The unlock button (2) is connected to the latch (201) through a linkage mechanism. When the unlock button (2) is pressed, the linkage mechanism drives the latch (201) to slide along the guide groove. The wedge-shaped inclined surface cooperates with the fastening part on the inner liner of the pressure cooker to achieve locking and unlocking.

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