Pot opening sealing structure and pot cover

Abstract

The utility model discloses a pot mouth sealing structure and a pot cover, the pot mouth sealing structure is detachably connected to the pot cover, and the pot mouth sealing structure comprises a cover plate which is detachably connected to the pot cover; the sealing ring is arranged on the outer edge of the cover plate in a sleeving manner; the fixed knob can penetrate through the cover plate to be connected to the pot cover, and the fixed knob can rotate relative to the cover plate. The pot cover is provided with a pressure bearing plate, and a fixing column matched with the fixing rotary knob is arranged on the pressure bearing plate. Through the detachable structure (the cover plate, the sealing ring and the fixed knob), parts are convenient to clean or replace, and the user experience is improved; the rotation function of the fixed knob allows adjustment of sealing pressure to adapt to different pot opening states (such as thermal expansion and cold contraction), and excessive compression or failure of the sealing ring is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of pot sealing, and in particular to a pot opening sealing structure and pot lid. Background Technology

[0002] Currently, the fixing structures of the detachable and washable lid assembly of electric pressure cookers on the market mainly include the following methods:

[0003] 1. Silicone-fixed structure: This structure uses silicone to fix the removable and washable cover to the pressure plate fixing column; however, due to the elasticity and deformability of the silicone material itself, the silicone fixing points are prone to loosening under the vibration environment generated when the electric pressure cooker is working, resulting in the removable and washable cover not being firmly fixed, which cannot meet the high reliability structural requirements of the electric pressure cooker.

[0004] 2. Nut-fixed structure: This structure uses a separate nut to fix the removable and washable cover. Although this method can provide a good fixing effect, the user needs to use both hands at the same time. One hand fixes the removable and washable cover, and the other hand tightens or loosens the nut. The operation is complicated and causes great inconvenience to the user.

[0005] 3. Prominent Handle Structure: This structure features a protruding handle on the removable and washable cover, making it easy for users to operate by hand. However, when a silicone sealing ring is installed on the handle, the silicone material has a high coefficient of friction. When the user rotates the handle, the silicone sealing ring cannot rotate with the handle, resulting in a poor limiting effect and affecting the reliability of the structural assembly. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The technical problem to be solved by this utility model is to provide a pot mouth sealing structure and pot lid, which solves the above-mentioned problems existing in the prior art, realizes the reliable fixation of the detachable and washable lid, the convenience of one-handed operation, and the function of good rotation and limiting after the sealing ring is installed.

[0008] (II) Technical Solution

[0009] The solution adopted by this utility model to solve the above-mentioned technical problems is a pot opening sealing structure, which is detachably connected to the pot lid, including...

[0010] A lid plate, which is detachably attached to the pot lid;

[0011] A sealing ring, which is fitted onto the outer edge of the cover plate;

[0012] A fixed knob is provided, which can pass through the cover plate and be connected to the pot lid, and the fixed knob is rotatable relative to the cover plate.

[0013] The above solution facilitates cleaning or replacement of components through a detachable structure (cover plate, sealing ring, and fixing knob), improving the user experience. The rotation function of the fixing knob allows for adjustment of the sealing pressure to adapt to different pot conditions (such as thermal expansion and contraction), preventing the sealing ring from being over-compressed or failing.

[0014] In some embodiments, a through hole is provided in the center of the cover plate, and the fixing knob includes a handle and a connecting rod, the connecting rod being able to pass through the through hole and connect to the pot lid.

[0015] The above solution enables quick installation by matching the through hole with the connecting rod, reducing assembly complexity; the handle design makes it easy for users to apply force to rotate the fixing knob, improving the convenience of sealing operations.

[0016] In some embodiments, an annular retaining ring is fixed to one end of the connecting rod near the lid, and a fixing space for fixing the lid is formed between the annular retaining ring and the handle.

[0017] Using the above solution, the annular retaining ring can prevent the cover from loosening, ensure that the sealing ring is evenly compressed, and avoid leakage; the fixed space can limit the displacement of the cover, which is suitable for high-pressure cooking environments.

[0018] In some embodiments, the outer wall of the connecting rod is provided with an annular groove for fixing the annular retaining ring.

[0019] By adopting the above solution, the mechanical interlock between the annular groove and the annular retaining ring enhances the connection stability, makes the annular retaining ring more securely installed, avoids the annular retaining ring from slipping off during use, and thus prevents the fixing knob from loosening.

[0020] In some embodiments, the outer wall of the handle is provided with an anti-slip structure.

[0021] By adopting the above solution, the anti-slip structure can prevent hand slippage during operation, and improve rotational stability, especially in a steam environment.

[0022] In some embodiments, the outer peripheral wall of the cover plate is formed with a straight arm portion extending axially, the sealing ring is fixed on the straight arm portion, and the distance between the straight arm portion and the pot opening minus the thickness of the sealing ring forms a deformation space for the pot opening sealing ring to deform.

[0023] Specifically, the pot opening sealing structure can achieve a secondary seal between the pot opening and the pot body; primary seal: the sealing ring directly contacts the pot opening to form a seal; secondary seal: the straight arm part of the cover plate limits the sealing ring and controls the deformation range, thereby ensuring that the shrinkage deformation of the sealing ring is controllable, so as not to cause cooking leakage due to the inherent shrinkage characteristics of silicone due to long-term use, which may result in an ineffective seal between the silicone and the pot opening.

[0024] By adopting the above solution, the deformation space formed between the straight arm of the cover plate and the pot opening allows the pot opening sealing ring to undergo controllable deformation under pressure, which improves the sealing effect and prevents damage to the pot opening sealing ring due to excessive deformation. By providing support and positioning for the sealing ring through the straight arm of the cover plate, secondary sealing protection for the pot opening sealing ring is achieved, reducing the risk of leakage caused by aging and deformation of the pot opening sealing ring.

[0025] In some embodiments, the deformation space ranges from 0 to 2 mm.

[0026] By adopting the above scheme, the appropriate deformation space ensures that the sealing ring is subjected to uniform force, avoids local stress concentration, and extends the service life of the sealing ring. The deformation space range of 0-2mm is the optimal range after precise calculation and testing. Within this range, the sealing ring can generate enough deformation to achieve a tight seal without excessive deformation that accelerates aging or damage. This range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring a good sealing effect under different temperature conditions. The reasonable deformation space design makes the resistance when opening and closing the pot lid moderate, ensuring the sealing effect without causing operational difficulties.

[0027] In some embodiments, the outer wall of the cover plate extends axially toward the pot lid to form the straight arm portion; and the sealing ring includes a sealing portion disposed near the outer wall of the straight arm portion, and the deformation space is formed by subtracting the thickness of the sealing portion from the distance between the straight arm portion and the pot opening.

[0028] The above design, with the straight arm extending towards the lid, provides more effective axial support for the sealing ring, enhancing the overall structural stability. The sealing element is located on the outer wall of the straight arm, making the contact between the sealing ring and the pot opening more stable and controllable, thus improving sealing reliability. The sealing element is positioned between the pot opening and the straight arm, with the deformation space formed by subtracting the thickness of the sealing element from the distance between the straight arm and the pot opening. This optimizes the path of pressure and heat action on the sealing ring during cooking, reducing local deformation and extending its service life.

[0029] In some embodiments, the outer peripheral wall of the straight arm portion extends radially outward to form a fixing portion for fixing the sealing ring; the sealing ring includes a mating portion that mates with the fixing portion.

[0030] By adopting the above solution, the interlocking structure of the fixing part and the mating part improves the tensile strength of the sealing ring, prevents the sealing ring from falling off or shifting during use, and effectively prevents the sealing ring from torsional deformation during use, maintaining the stability of the sealing state; the radially extended fixing part design makes the sealing ring more evenly stressed, reduces local stress concentration, and extends the service life of the sealing ring.

[0031] The solution adopted by this utility model to solve the above-mentioned technical problems is a pot lid, which is used to seal the pot opening of the pot body; it includes a pot opening sealing structure as described above that is detachably connected to the pot lid; the pot lid has a pressure plate, and the pressure plate is provided with a fixing post that cooperates with the fixing knob.

[0032] Specifically, the fixing column is assembled at the center of the pressure plate.

[0033] In some embodiments, a recess for fixing the sealing ring is provided at the outer edge of the pressure plate, and the sealing ring includes a protrusion that can fit into the recess.

[0034] By adopting the above scheme, the cooperation between the recessed part and the raised part enables the sealing ring to be precisely positioned in three-dimensional space, which greatly improves the stability of the sealing structure and enhances the structure's anti-interference ability. Even under external interference such as vibration and impact, it can maintain a good sealing effect. The design of the recessed part provides clear assembly guidance, simplifies the user's operation steps, improves the assembly success rate, and provides a preset space for the deformation of the sealing ring, controlling the deformation range and avoiding sealing failure caused by excessive deformation.

[0035] In some embodiments, a plurality of wedge-shaped portions are provided at one end of the protrusion that contacts the bottom wall of the recess; and the wedge-shaped portions are formed by extending from one end of the protrusion near the bottom wall of the recess in a direction close to the bottom wall.

[0036] Using the above solution, the wedge-shaped part generates radial expansion force under pressure, tightly fitting the bottom wall of the recess and enhancing sealing performance. Simultaneously, the wedge-shaped design enables automatic guidance during installation, allowing for smooth assembly even with minor deviations, improving user experience. Furthermore, the wedge-shaped part provides a small displacement adjustment space for the sealing ring, accommodating minor manufacturing tolerances between the pot body and lid, and also adapting to dimensional changes caused by thermal expansion and contraction, maintaining good sealing performance under temperature fluctuations. The multiple wedge-shaped parts distribute the pressure on the sealing ring, avoiding damage caused by single-point stress and extending its service life. The design of the wedge-shaped part extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement.

[0037] In some embodiments, an annular rib is formed at one end of the protrusion near the sidewall of the recess, extending radially.

[0038] By adopting the above solution, the annular rib enhances the stability of the sealing ring under lateral force, preventing seal failure caused by lateral pressure. Furthermore, the annular rib and the sidewall of the recess form an additional sealing point, achieving double sealing protection and improving overall sealing reliability. The annular rib restricts the torsional deformation of the sealing ring, maintaining the flatness of the sealing surface and the sealing effect. It also increases the contact area and friction between the sealing ring and the pressure plate, improving fixing stability and preventing accidental loosening. In addition, the annular design ensures that stress is evenly distributed within a 360° range, avoiding local stress concentration and extending the product's service life.

[0039] In some embodiments, the outer edge of the pressure plate near one end of the cover plate is partially recessed inward to form the recess; the sealing ring includes an abutment portion that can abut against the opening edge of the recess.

[0040] By adopting the above solution, the fit between the abutment part and the opening edge of the recessed part provides a precise positioning reference, ensuring the accuracy of the sealing ring installation position. At the same time, it gives users a clear operating point when installing or removing the sealing ring, improving the convenience of operation.

[0041] In some embodiments, the abutment portion is formed by the outer wall of the sealing ring extending radially outward.

[0042] By adopting the above solution, the radially extended abutment part forms a mechanical stop, which effectively prevents the axial displacement of the sealing ring during use, increases the contact area with the pressure plate, disperses the contact pressure, and reduces the risk of local stress concentration. At the same time, the design of the abutment part ensures a tight fit between the sealing ring and the pressure plate, reducing the risk of leakage due to poor contact.

[0043] (III) Beneficial Effects

[0044] Compared with the prior art, this utility model designs a pot mouth sealing structure and a pot lid.

[0045] (1) This utility model facilitates cleaning or replacement of parts through a detachable structure (cover plate, sealing ring, fixing knob), thereby improving the user experience; the rotation function of the fixing knob allows for adjustment of the sealing pressure to adapt to different pot opening conditions (such as thermal expansion and contraction), avoiding excessive compression or failure of the sealing ring.

[0046] (2) This utility model achieves quick installation by using the through hole and connecting rod to reduce assembly complexity; the handle design makes it easy for users to apply force to rotate the fixing knob, improving the convenience of sealing operation;

[0047] (3) The ring retainer of this utility model can prevent the cover plate from loosening, ensure that the sealing ring is evenly compressed, and avoid leakage; the fixed space can limit the displacement of the cover plate, which is suitable for high-pressure cooking environment; at the same time, the mechanical interlock between the ring groove and the ring retainer enhances the connection stability, makes the ring retainer installation more stable, avoids the ring retainer from slipping during use, and thus prevents the fixing knob from loosening.

[0048] (4) The present invention allows the pot opening sealing ring to undergo controllable deformation under pressure through the deformation space formed between the straight arm part of the cover plate and the pot opening, thereby improving the sealing effect and preventing damage to the pot opening sealing ring due to excessive deformation; the straight arm part of the cover plate provides support and positioning for the sealing ring, thereby achieving secondary sealing protection for the pot opening sealing ring and reducing the risk of leakage caused by aging and deformation of the pot opening sealing ring.

[0049] (5) This utility model uses an appropriate deformation space to make the sealing ring bear force evenly, avoid local stress concentration, and extend the service life of the sealing ring; the deformation space range of 0-2mm is the optimal range after precise calculation and testing. Within this range, the sealing ring can generate enough deformation to achieve a tight seal, but will not accelerate aging or damage due to excessive deformation; this range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring that a good sealing effect can be maintained under different temperature conditions. The reasonable deformation space design makes the resistance when the pot lid is opened and closed moderate, which can ensure the sealing effect without causing operational difficulties.

[0050] (6) The present invention provides more effective axial support for the sealing ring by extending the straight arm part towards the pot lid, thereby enhancing the stability of the overall structure; the sealing part is set on the outer wall of the straight arm part, making the contact between the sealing ring and the pot opening more stable and controllable, thus improving the sealing reliability; the sealing part is designed between the pot opening and the straight arm part, and the deformation space is formed by subtracting the thickness of the sealing part from the distance between the straight arm part and the pot opening; the action path of pressure and heat on the sealing ring during cooking is optimized, reducing the local deformation of the sealing ring and extending its service life;

[0051] (7) This utility model achieves precise positioning of the sealing ring in three-dimensional space through the cooperation of the recessed part and the raised part, which greatly improves the stability of the sealing structure and enhances the anti-interference ability of the structure. Even under external interference such as vibration and impact, it can maintain a good sealing effect. The design of the recessed part provides clear assembly guidance, simplifies the user's operation steps, improves the assembly success rate, and provides a preset space for the deformation of the sealing ring, controls the deformation range, and avoids sealing failure caused by excessive deformation.

[0052] (8) The wedge-shaped part of this utility model generates radial expansion force when under pressure, which fits tightly against the bottom wall of the recessed part and enhances the sealing performance. At the same time, the design of the wedge-shaped part realizes the automatic guiding function during the installation process. Even with slight deviations, the assembly can be completed smoothly, improving the user experience. Moreover, the wedge-shaped part provides a small displacement adjustment space for the sealing ring, which can adapt to the small manufacturing tolerances that may exist between the pot body and the pot lid. It can also adapt to the size changes caused by thermal expansion and contraction, and can still maintain a good sealing effect under temperature fluctuation conditions. The setting of multiple wedge-shaped parts disperses the pressure on the sealing ring, avoids damage to the sealing ring caused by single-point force, and extends the service life. The design of the wedge-shaped part extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is an exploded view of a pot-mouth sealing structure according to Example 1;

[0055] Figure 2 This is a cross-sectional view of a pot opening sealing structure according to Example 1;

[0056] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0057] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0058] Figure 5 This is a schematic diagram of the pot lid structure in Example 2;

[0059] Figure 6 This is an exploded view of the pot lid from Example 2;

[0060] Figure 7 This is a cross-sectional view of the pot lid in Example 2;

[0061] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0062] Figure 9 for Figure 7 Enlarged diagram of point D in the middle.

[0063] The component names corresponding to the various reference numerals in the figure are as follows: 10, pot lid; 20, pot body; 100, cover plate; 101, through hole; 102, straight arm part; 1021, fixing part; 200, sealing ring; 201, sealing part; 202, protrusion; 2021, wedge-shaped part; 2022, annular rib; 203, mating part; 204, abutting part; 300, fixing knob; 301, handle part; 3011, anti-slip structure; 302, connecting rod; 3021, annular groove; 400, annular retaining ring; 500, fixing space; 600, deformation space; 700, pressure plate; 701, recessed part; 800, fixing column. Detailed Implementation

[0064] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0065] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0067] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0068] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0069] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0070] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0071] Example 1:

[0072] like Figures 1-9 As shown, this utility model provides a pot opening sealing structure, detachably connected to a pot lid 10, including a lid plate 100 detachably connected to the pot lid 10; a sealing ring 200 sleeved on the outer edge of the lid plate 100; and a fixing knob 300 that passes through the lid plate 100 and is connected to the pot lid 10, and the fixing knob 300 is rotatable relative to the lid plate 100. Using the above solution, the detachable structure (lid plate 100, sealing ring 200, fixing knob 300) facilitates cleaning or replacement of components, improving the user experience; the rotation function of the fixing knob 300 allows adjustment of the sealing pressure to adapt to different pot opening conditions (such as thermal expansion and contraction), preventing the sealing ring 200 from being over-compressed or failing.

[0073] In some embodiments, a through hole 101 is provided in the center of the cover plate 100, and the fixing knob 300 includes a handle portion 301 and a connecting rod 302. The connecting rod 302 can pass through the through hole 101 and connect to the pot lid 10. With this solution, the cooperation between the through hole 101 and the connecting rod 302 enables quick installation and reduces assembly complexity; the design of the handle portion 301 facilitates user rotation of the fixing knob 300, improving the convenience of sealing operations. In some embodiments, an annular retaining ring 400 is fixed to one end of the connecting rod 302 near the pot lid 10, and a fixing space 500 for fixing the cover plate 100 is formed between the annular retaining ring 400 and the handle portion 301. With this solution, the annular retaining ring 400 can prevent the cover plate 100 from loosening, ensure that the sealing ring 200 is evenly compressed, and avoid leakage; the fixing space 500 can restrict the displacement of the cover plate 100, which is suitable for high-pressure cooking environments. In some embodiments, the outer wall of the connecting rod 302 is provided with an annular groove 3021 for fixing the annular retaining ring 400. With this solution, the mechanical interlock between the annular groove 3021 and the annular retaining ring 400 enhances connection stability, making the annular retaining ring 400 more securely installed and preventing it from slipping during use, thereby preventing the fixing knob 300 from loosening. In some embodiments, the outer wall of the handle portion 301 is provided with an anti-slip structure 3011. With this solution, the anti-slip structure 3011 can prevent hand slippage during operation, especially improving rotational stability in a steam environment.

[0074] In some embodiments, the outer peripheral wall of the cover plate 100 has a straight arm portion 102 extending axially. The sealing ring 200 is fixed to the straight arm portion 102, and the distance between the straight arm portion 102 and the pot opening minus the thickness of the sealing ring 200 forms a deformation space 600 for the deformation of the pot opening sealing ring 200. Specifically, this pot opening sealing structure can achieve a secondary seal between the sealing ring 20 and the pot opening; primary seal: the sealing ring 200 directly contacts the pot opening to form a seal; secondary seal: the straight arm portion 102 of the cover plate 100 limits the sealing ring 200 and controls the deformation range, thereby ensuring that the inward deformation of the sealing ring 200 is controllable, so as not to cause cooking leakage due to the inherent shrinkage characteristics of silicone during long-term use, which may prevent the sealing ring 200 from failing to seal effectively with the pot opening. By adopting the above solution, the deformation space 600 formed between the straight arm portion 102 of the cover plate 100 and the pot opening allows the pot opening sealing ring 200 to undergo controllable deformation under pressure, improving the sealing effect while preventing damage to the pot opening sealing ring 200 due to excessive deformation. The straight arm portion 102 of the cover plate 100 provides support and positioning for the sealing ring 200, achieving secondary sealing protection for the pot opening sealing ring 200 and reducing the risk of leakage due to aging and deformation of the pot opening sealing ring 200. In some embodiments, the deformation space 600 ranges from 0 to 2 mm. By adopting the above scheme, the appropriate deformation space 600 ensures that the sealing ring 200 is subjected to uniform force, avoids local stress concentration, and extends the service life of the sealing ring 200. The deformation space 600 range of 0-2mm is the optimal range after precise calculation and testing. Within this range, the sealing ring 200 can generate sufficient deformation to achieve a tight seal without excessive deformation that accelerates aging or damage. This range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring a good sealing effect under different temperature conditions. The reasonable deformation space 600 design makes the resistance when the pot lid 10 is opened and closed moderate, ensuring a sealing effect without causing operational difficulties.

[0075] In some embodiments, the outer wall of the cover plate 100 extends axially toward the pot lid 10 to form the straight arm portion 102; and the sealing ring 200 includes a sealing portion 201 disposed near the outer wall of the straight arm portion 102, the deformation space 600 being formed by subtracting the thickness of the sealing portion 201 from the distance between the straight arm portion 102 and the pot opening. By adopting the above scheme, the design of the straight arm portion 102 extending toward the pot lid 10 provides more effective axial support for the sealing ring 200, enhancing the stability of the overall structure; the sealing portion 201 is disposed on the outer wall of the straight arm portion 102, making the contact between the sealing ring 200 and the pot opening more stable and controllable, improving sealing reliability; the design of the sealing portion 201 between the pot opening and the straight arm portion 102, with the deformation space 600 being formed by subtracting the thickness of the sealing portion 201 from the distance between the straight arm portion 102 and the pot opening; and the optimization of the action path of pressure and heat on the sealing ring 200 during cooking, reducing the local deformation of the sealing ring 200, and extending its service life. In some embodiments, the outer peripheral wall of the straight arm portion 102 extends radially outward to form a fixing portion 1021 for fixing the sealing ring 200; the sealing ring 200 includes a mating portion 203 that cooperates with the fixing portion 1021. By adopting the above solution, the interlocking structure of the fixing portion 1021 and the mating portion 203 improves the tensile strength of the sealing ring 200, prevents the sealing ring 200 from falling off or shifting during use, and effectively prevents torsional deformation of the sealing ring 200 during use, maintaining the stability of the sealing state; the radially extending fixing portion 1021 design makes the sealing ring 200 more evenly stressed, reduces local stress concentration, and extends the service life of the sealing ring 200.

[0076] Example 2:

[0077] like Figures 1-9As shown, this utility model provides a pot lid for sealing the opening of a pot body 20; it includes a pot opening sealing structure as described above, detachably connected to the pot lid 10; the pot lid 10 has a pressure plate 700, and a fixing post 800 is provided on the pressure plate 700 to cooperate with the fixing knob 300. Specifically, the fixing post 800 is assembled at the center of the pressure plate 700. In some embodiments, a recess 701 for fixing the sealing ring 200 is provided at the outer edge of the pressure plate 700, and the sealing ring 200 includes a protrusion 202 that can fit into the recess 701. By adopting the above scheme, the cooperation between the recessed portion 701 and the protrusion 202 achieves precise positioning of the sealing ring 200 in three-dimensional space, greatly improving the stability of the sealing structure and enhancing its anti-interference ability. Even under external interference such as vibration and impact, it can maintain a good sealing effect. The design of the recessed portion 701 provides clear assembly guidance, simplifies the user's operation steps, and improves the assembly success rate. Furthermore, the recessed portion 701 provides a preset space for the deformation of the sealing ring 200, controlling the deformation range and avoiding sealing failure caused by excessive deformation. In some embodiments, a plurality of wedge-shaped portions 2021 are provided at the end of the protrusion 202 that contacts the bottom wall of the recessed portion 701; and the wedge-shaped portions 2021 are formed by extending from the end of the protrusion 202 near the bottom wall of the recessed portion 701 towards that bottom wall. Using the above solution, the wedge-shaped portion 2021 generates radial expansion force under pressure, tightly fitting the bottom wall of the recessed portion 701 and enhancing the sealing performance. Simultaneously, the design of the wedge-shaped portion 2021 enables automatic guidance during installation, allowing for smooth assembly even with minor deviations, thus improving user experience. Furthermore, the wedge-shaped portion 2021 provides a small displacement adjustment space for the sealing ring 200, accommodating minor manufacturing tolerances that may exist between the pot body 20 and the pot lid 10, and also adapting to dimensional changes caused by thermal expansion and contraction, maintaining a good sealing effect even under temperature fluctuations. The arrangement of multiple wedge-shaped portions 2021 disperses the pressure on the sealing ring 200, avoiding damage to the sealing ring 200 caused by single-point force and extending its service life. The design of the wedge-shaped portion 2021 extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement. In some embodiments, the protrusion 202 near the side wall of the recessed portion 701 has an annular rib 2022 extending radially.By adopting the above solution, the annular rib 2022 enhances the stability of the sealing ring 200 under lateral force, preventing sealing failure caused by lateral pressure. Furthermore, the annular rib 2022 and the side wall of the recessed portion 701 form an additional sealing point, achieving double sealing protection and improving overall sealing reliability. The annular rib 2022 restricts the torsional deformation of the sealing ring 200, maintains the flatness of the sealing surface and the sealing effect, increases the contact area and friction between the sealing ring 200 and the pressure plate 700, improves the fixing stability, prevents accidental loosening, and the annular design ensures that stress is evenly distributed within a 360° range, avoiding local stress concentration and extending the product's service life.

[0078] In some embodiments, the outer edge of the pressure plate 700 near the end of the cover plate 100 is partially recessed inward to form the recess 701; the sealing ring 200 includes an abutment portion 204 that can abut against the opening edge of the recess 701. With this design, the engagement of the abutment portion 204 with the opening edge of the recess 701 provides a precise positioning reference, ensuring the accuracy of the sealing ring 200's installation position. Simultaneously, it provides the user with a clear operating point when installing or removing the sealing ring 200, improving operational convenience. In some embodiments, the abutment portion 204 is formed by the outer wall of the sealing ring 200 extending radially outward. By adopting the above solution, the radially extended abutment portion 204 forms a mechanical stop, which effectively prevents the axial displacement of the sealing ring 200 during use, increases the contact area with the pressure plate 700, disperses the contact pressure, and reduces the risk of local stress concentration. At the same time, the design of the abutment portion 204 ensures a tight fit between the sealing ring 200 and the pressure plate 700, reducing the risk of leakage due to poor contact.

[0079] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0080] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pot opening sealing structure, characterized in that: Detachably connected to the pot lid (10), including A cover plate (100) is detachably attached to the pot lid (10); A sealing ring (200) is fitted onto the outer edge of the cover plate (100); A fixed knob (300) is connected to the pot lid (10) through the cover plate (100), and the fixed knob (300) is rotatable relative to the cover plate (100).

2. The pot opening sealing structure according to claim 1, characterized in that: The cover plate (100) has a through hole (101) in the center. The fixing knob (300) includes a handle (301) and a connecting rod (302). The connecting rod (302) can pass through the through hole (101) and connect to the pot lid (10).

3. The pot opening sealing structure according to claim 2, characterized in that: The connecting rod (302) is fixed with an annular retaining ring (400) at one end near the pot lid (10), and a fixing space (500) for fixing the lid plate (100) is formed between the annular retaining ring (400) and the handle (301).

4. The pot opening sealing structure according to claim 3, characterized in that: The outer wall of the connecting rod (302) is provided with an annular groove (3021) for fixing the annular retaining ring (400).

5. The pot opening sealing structure according to claim 2, characterized in that: The outer wall of the handle (301) is provided with an anti-slip structure (3011).

6. The pot opening sealing structure according to claim 1, characterized in that: The outer peripheral wall of the cover plate (100) is formed with a straight arm portion (102) extending along the axial direction. The sealing ring (200) is fixed on the straight arm portion (102). The distance between the straight arm portion (102) and the pot opening minus the thickness of the sealing ring (200) forms a deformation space (600) for the pot opening sealing ring (200) to deform.

7. The pot opening sealing structure according to claim 6, characterized in that: The deformation space (600) ranges from 0 to 2 mm.

8. The pot opening sealing structure according to claim 6, characterized in that: The outer wall of the cover plate (100) extends axially toward the pot lid (10) to form the straight arm portion (102); and the sealing ring (200) includes a sealing part (201) disposed near the outer wall of the straight arm portion (102), and the deformation space (600) is formed by subtracting the thickness of the sealing part (201) from the distance between the straight arm portion (102) and the pot opening.

9. A pot lid for sealing the opening of a pot body (20); characterized in that: Includes a pot opening sealing structure as described in any one of claims 1-8 that is detachably connected to the pot lid (10); the pot lid (10) has a pressure plate (700) and a fixing post (800) that cooperates with the fixing knob (300) on the pressure plate (700).

10. The pot lid according to claim 9, characterized in that: The outer edge of the pressure plate (700) is provided with a recess (701) for fixing the sealing ring (200), and the sealing ring (200) includes a protrusion (202) that can fit into the recess (701).

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