A pot cover and pressure cooker

Abstract

The application provides a pot cover and a pressure cooker, and relates to the technical field of kitchen utensils.The pot cover comprises a cover body, a switch assembly, a self-locking valve and a clamp mechanism.The self-locking valve is installed on the cover body, and comprises a valve core which is arranged to be movable along the axial direction of the cover body.The switch assembly comprises a fixing part and a pressing part which is movably matched with the fixing part.The pressing part is slidably matched with the valve core along the axial direction of the cover body and is used for pressing the valve core in a pressing state.The clamp mechanism is installed on the cover body, and the clamp mechanism is provided with a limiting through slot.The limiting through slot comprises a first limiting area which is matched with the valve core in a jacking state to lock the clamp mechanism, and a second limiting area which is matched with the pressing part in a pressing state to lock the clamp mechanism.The pot cover avoids the self-locking failure in the traditional fast discharge mode, the spouting explosion and scalding accidents caused by opening the cover when the pressure is not completely removed, and improves the safety of the fast discharge.

Description

Technical Field

[0001] This invention relates to the field of kitchen utensils technology, and in particular to a pot lid and a pressure cooker. Background Technology

[0002] To improve cooking efficiency, kitchens are usually equipped with pressure cookers. Currently, the standard pressure relief method for pressure cookers with clamping mechanisms is natural slow release. The product relies on a pressure limiting valve to stably release steam, and together with a float self-locking valve, a pressure linkage protection mechanism is constructed. When there is pressure in the pot, the self-locking valve lifts up and locks the clamping mechanism, eliminating the risk of opening the lid under pressure. The entire pressure relief solution prioritizes safety during use.

[0003] However, in daily use, many users will forcibly press the self-locking valve to release steam and quickly reduce pressure in order to shorten the waiting time. This will cause the self-locking mechanism to fail. Even if the pressure inside the pot has not been completely released, the pressure cooker lid is still in a state where it can be opened. At this time, accidentally opening the lid can easily cause steam explosion and injury accidents, which poses a great safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a lid that avoids explosions and burns caused by self-locking failure or opening the lid before the pressure is fully released in traditional quick-release modes, thus improving the safety of rapid venting. Additionally, a pressure cooker including the aforementioned lid is also provided.

[0005] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a pot lid, comprising a lid body, a switch assembly, a self-locking valve, and a clamping mechanism; The self-locking valve is installed on the cover and includes a valve core that is axially movably configured along the cover. The switch assembly includes a fixing member and a pressing member that is movably engaged with the fixing member. The pressing member is slidably engaged with the valve core along the axial direction of the cover and is used to press down the valve core in the pressed state. The clamping mechanism is installed on the cover. The clamping mechanism has a limiting groove. The limiting groove includes a first limiting area that cooperates with the valve core in the lifting state to lock the clamping mechanism and a second limiting area that cooperates with the pressing element in the pressing state to lock the clamping mechanism.

[0006] In an optional embodiment, the switch assembly further includes a reset member installed between the fixing member and the pressing member, wherein the end of the fixing member away from the cover has a limiting portion for preventing the pressing member from dislodging from the fixing member.

[0007] In an optional embodiment, the fastener includes a guide section having a first guide structure, and the pressing member has a second guide structure that slides along the axial direction of the cover and engages with the first guide structure.

[0008] In an optional embodiment, the fastener includes a limiting section located on one side of the guide section along its axial direction; The limiting section has a clearance structure that allows the second guide structure to rotate relative to it and restricts the axial position of the second guide structure to limit the pressing member to the pressing state.

[0009] In an optional embodiment, the pressing element includes a pressing button and a pressing rod. The pressing button is movably engaged with a fixing element, and the pressing rod is connected to the pressing button and has a side opening for the valve core to extend into.

[0010] In an optional embodiment, the pressure rod is sleeved outside the pressing button and rotates in cooperation with the pressing button. The pressing button has a first limiting end face and a second limiting end face that restrict the axial movement of the pressure rod.

[0011] In an optional embodiment, the valve core has a third limiting end face. When the valve core is in the lifting state and the pressing member is in the reset state, the third limiting end face abuts against or is spaced apart from the pressing member by a first distance.

[0012] In an optional embodiment, the line connecting the centers of the first limiting area and the second limiting area extends radially along the cover. The limiting groove also includes a first clearance area that connects the first limiting area and the second limiting area. The width of the first clearance area is smaller than the width of the first limiting area and the second limiting area, and is greater than or equal to the outer diameter of the portion of the valve core located inside the limiting groove when it is in a drooping state.

[0013] In an optional embodiment, the second limiting area is located on the side of the first limiting area near the center of the cover, and the limiting through groove also includes a second clearance area located in the second limiting area away from the first clearance area. The width of the second clearance area is less than the outer diameter of the pressing member and greater than or equal to the outer diameter of the fixing member.

[0014] Secondly, the present invention provides a pressure cooker, including a lid as described in any of the foregoing embodiments.

[0015] The pot lid and pressure cooker provided by this invention can produce the following beneficial effects: Compared with the prior art, the pot lid provided by the first aspect of the present invention, when the pressure is released quickly by pressing down the pressing part, the pressing part releases the valve core from its cooperation with the first limiting area, and at the same time slides into the second limiting area to achieve mechanical locking of the clamping mechanism. Thus, the pot lid can still reliably maintain the closed state during the process of accelerated steam discharge, avoiding the explosion and scalding accidents caused by self-locking failure and opening the lid before the pressure is completely released in the traditional fast exhaust mode, and improving the safety of rapid exhaust.

[0016] The pressure cooker provided in the second aspect of the present invention has the lid provided in the first aspect of the present invention, thereby having all the beneficial effects of the lid provided in the first aspect of the present invention. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A longitudinal cross-sectional view of a pressure cooker in cooking state, provided in an embodiment of the present invention; Figure 2 A cross-sectional view of a pressure cooker in a cooking state, provided in an embodiment of the present invention; Figure 3 This is a longitudinal cross-sectional view of the pressure cooker during rapid venting after cooking, provided in an embodiment of the present invention. Figure 4 A cross-sectional view of the pressure cooker during rapid venting after cooking, provided in an embodiment of the present invention; Figure 5 This is a longitudinal cross-sectional view of the pressure cooker after the pressure is vented, according to an embodiment of the present invention. Figure 6 This is a cross-sectional view of the pressure cooker after the pressure is exhausted, according to an embodiment of the present invention. Figure 7 Partial cross-sectional view of a switching assembly provided in an embodiment of the present invention. Figure 1 ; Figure 8 Partial cross-sectional view of a switching assembly provided in an embodiment of the present invention. Figure 2 ; Figure 9 A front view of the fastener provided in an embodiment of the present invention; Figure 10 A three-dimensional structural schematic diagram of the fastener provided in an embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the push button provided in an embodiment of the present invention; Figure 12 A bottom view of the push button provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the three-dimensional structure of the pressure bar provided in an embodiment of the present invention.

[0019] Icons: 1-Cover; 2-Switch assembly; 21-Fixing component; 211-Guide section; 2111-First guide structure; 212-Limiting section; 2121-Avoidance structure; 213-Limiting part; 22-Pressing component; 221-Second guide structure; 222-Press button; 2221-First limiting end face; 2222-Second limiting end face; 2223-Fourth limiting end face; 2224-Vertical hand grip plate; 223-Pressure rod; 2231-Side opening; 23-Reset component; 3-Self-locking valve; 31-Valve core; 311-Third limiting end face; 4-Clamping mechanism; 41-Limiting through groove; 411-First limiting area; 412-Second limiting area; 413-First avoidance area; 414-Second avoidance area; 5-Handle. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 according to the specific circumstances.

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] A first aspect of the present invention provides a pot lid, such as Figures 1 to 8As shown, it includes a cover 1, a switch assembly 2, a self-locking valve 3, and a clamping mechanism 4; The self-locking valve 3 is installed on the cover 1, and the self-locking valve 3 includes a valve core 31 that is movably configured along the axial direction of the cover 1; The switch assembly 2 includes a fixing member 21 and a pressing member 22 that is movably engaged with the fixing member 21. The pressing member 22 is slidably engaged with the valve core 31 along the axial direction of the cover 1 and is used to press down the valve core 31 in the pressed state. The clamping mechanism 4 is installed on the cover 1. The clamping mechanism 4 has a limiting groove 41. The limiting groove 41 includes a first limiting area 411 that cooperates with the valve core 31 in the lifting state to lock the clamping mechanism 4 and a second limiting area 412 that cooperates with the pressing member 22 in the pressing state to lock the clamping mechanism 4.

[0025] In cooking mode, such as Figure 1 and Figure 2 As shown, the valve core 31 is lifted by air pressure and engages with the first limiting area 411 to lock the clamping mechanism 4, so the pot lid cannot be opened; When rapid degassing is needed after cooking, such as... Figure 3 and Figure 4 As shown, the pressing part 22 of the manual pressing switch assembly 2 presses down the valve core 31 in sync, and the steam is accelerated to be discharged through the self-locking valve 3. The valve core 31 cancels the limiting cooperation with the first limiting area 411. At the same time, the pressing part 22 enters the second limiting area 412 and cooperates with the second limiting area 412 to lock the clamping mechanism 4. The pot lid cannot be opened, eliminating the hidden danger of opening the lid under pressure. After observing that the steam has been completely released and the pressure inside the pot has been completely released, such as... Figure 5 and Figure 6 As shown, when the reset pressing part 22 is released, the valve core 31 remains in a falling state under the action of gravity. The pressing part 22 exits the second limit zone 412, releasing the lock on the clamping mechanism 4, and the pot lid can be rotated normally to open, completing all operations.

[0026] Compared with the prior art, the pot lid provided by the first aspect of the present invention, when the pressure member 22 is pressed down to quickly release pressure, the pressure member 22 presses down on the valve core 31 to release its cooperation with the first limiting area 411, and at the same time slides into the second limiting area 412 to achieve mechanical locking of the clamping mechanism 4. Thus, the pot lid can still reliably maintain the closed state during the process of accelerated steam discharge, avoiding the explosion and scalding accidents caused by self-locking failure and opening the lid before the pressure is completely released in the traditional fast discharge mode, and improving the safety of rapid venting.

[0027] In alternative implementations, such as Figure 7 and Figure 8 As shown, the switch assembly 2 also includes a reset member 23, which is pre-compressed and disposed between the fixing member 21 and the pressing member 22 as an elastic return element.

[0028] Specifically, one end of the reset member 23 abuts against the upper end face of the fixing member 21 on the side away from the cover 1, and the other end abuts against the inner end face of the pressing member 22 on the side facing the fixing member 21; The fixing member 21 extends axially along the cover 1 to form a block structure, and a limiting part 213 is provided at the end away from the cover 1. The limiting part 213 may be a structure such as an annular flange. When the pressing member 22 slides upward along the axial direction to the limit position, the bottom end face of the limiting part 213 abuts against the fourth limiting end face 2223 of the pressing member 22, preventing the pressing member 22 from continuing to disengage, so as to ensure that the pressing member 22 is always constrained within the stroke space of the fixing member 21.

[0029] The aforementioned reset component 23 provides a continuous and stable rebound force, enabling the pressing component 22 to automatically and quickly return to its initial high position after the user releases their grip, and simultaneously driving the pressing component 22 out of the second limit zone 412, releasing the lock on the clamping mechanism 4, thus facilitating the user's operation.

[0030] The aforementioned reset component 23 can be a helical spring, a sheet spring, or the like.

[0031] In alternative implementations, such as Figures 7 to 12 As shown, the fastener 21 includes a guide section 211, which is provided with a first guide structure 2111. The first guide structure 2111 can be a groove or guide rail extending along the axial direction, and its extension direction is parallel to the axial direction of the cover 1.

[0032] Correspondingly, the surface of the pressing member 22 facing the fixing member 21 is provided with a matching second guide structure 221, such as a raised slider, guide bar or recessed guide groove, which slides in cooperation with the first guide structure 2111 along the axial direction of the cover 1.

[0033] When the user presses down on the pressing component 22, the second guide structure 221 slides stably along the guide direction of the first guide structure 2111, constraining the pressing component 22 to only make axial linear movements, preventing it from circumferentially deflecting or laterally shaking, and increasing the smoothness of pressing.

[0034] Reference Figure 10 and Figure 12 As shown, the first guide structure 2111 adopts a groove structure, and the second guide structure 221 adopts a raised slider.

[0035] Of course, the cooperation between the first guide structure 2111 and the second guide structure 221 is not limited to the combination of the groove and the slider mentioned above. Conventional axial guide structures such as cylindrical pins and guide holes can also be used, as long as they can achieve single-degree-of-freedom constrained motion of the pressing part 22 in the axial direction.

[0036] In alternative implementations, such as Figures 7 to 12As shown, the fastener 21 includes a limiting section 212, which is located on one side of the axial direction of the guide section 211, and is coaxially connected to and integrally formed with the guide section 211. The limiting section 212 has an avoidance structure 2121, which is a fan-shaped annular groove extending circumferentially along the limiting section 212.

[0037] In use, the second guide structure 221 slides downward first. When the pressing member 22 is pressed down to the limit position, the second guide structure 221 enters the limiting section 212. The first guide structure 2111 cancels the guiding effect on the second guide structure 221. The pressing member 22 can rotate relative to the fixing member 21 and enter the avoidance structure 2121. The avoidance structure 2121 can overcome the elastic force of the reset member 23 to limit the axial position of the second guide structure 221, so that the pressing member 22 cannot spring back to reset and remains in the pressed state.

[0038] The above-described implementation allows the pressing element 22 to enter a temporary locked state, improving operational reliability. It eliminates the need for the user to continuously press down on the pressing element 22, avoiding hand fatigue caused by prolonged pressing and making it more convenient to use.

[0039] In alternative implementations, such as Figures 11 to 13 As shown, the pressing component 22 has a split structure, including a pressing button 222 and a pressing rod 223.

[0040] The push button 222 can be sleeved on the outside of the fixing member 21 or inserted into the inside of the fixing member 21. For ease of processing, it is preferred to sleeve it on the outside of the fixing member 21. The push button 222 is the operating part for direct hand force application. Its top can be provided with a vertical hand grip plate 2224 for easy hand gripping by the user, so that the user can press down and rotate the push button 222.

[0041] The aforementioned button 222 has a second guide structure 221, which allows the button 222 to slide relative to the fixing member 21. After sliding down to the position, it can also rotate relative to the fixing member 21 to achieve axial locking.

[0042] One end of the lever 223 is connected to the outer wall of the button 222, and the other end extends toward the self-locking valve 3. A side opening 2231 is provided on its side, and the size of the side opening 2231 is adapted to the outer contour of the valve core 31.

[0043] When the pressure inside the pot increases and the valve core 31 moves upward under the thrust of steam, the valve core 31 can slide upward relative to the side opening 2231. When the user presses down the button 222, the pressure rod 223 moves downward synchronously. The pressure rod 223 applies a downward thrust to the valve core 31, thereby reliably pressing down the valve core 31 and causing the core section with a larger outer diameter to disengage from the first limit zone 411, thus releasing the locking of the clamping mechanism.

[0044] The aforementioned pressing element 22 drives the outer edge of the pressure rod 223 to press the valve core 31 through the pressing button 222. The pressing button 222 can be set away from the self-locking valve 3 to avoid steam being sprayed directly onto the hand at the moment of pressing, making the operation safer.

[0045] In an optional embodiment, the end of the pressure rod 223 connected to the button 222 is in the form of a cylindrical or ring-shaped structure, coaxially sleeved on the outer periphery of the button 222, and forming a mating relationship with the button 222 that can rotate relative to each other but cannot be axially separated.

[0046] Specifically, such as Figure 11 As shown, the outer peripheral surface of the button 222 is provided with a first limiting end face 2221 and a second limiting end face 2222, which are arranged at intervals along the axial direction to form a bidirectional limiting boundary for the axial movement of the pressure rod 223, thereby restricting the axial movement of the pressure rod 223 relative to the button 222.

[0047] The above-described implementation allows the lever 223 to remain stationary when the user rotates the button 222, ensuring the connection between the lever 223 and the valve core 31, while also achieving axial locking of the button 222.

[0048] In an optional embodiment, the valve core 31 has a third limiting end face 311, which extends circumferentially along the valve core 31 and forms an annular plane.

[0049] During daily cooking and natural venting, the steam pressure inside the pot pushes the valve core 31 to its limit position along the axial direction of the lid 1. The valve core 31 closes the vent of the self-locking valve 3 located inside the pot. At this time, the third limiting end face 311 just abuts against the pressing member 22, or there is a small first distance between the third limiting end face 311 and the pressing member 22, so that when cooking is finished and the lid needs to be opened quickly, after pressing down the pressing member 22, the pressing member 22 can quickly press down the third limiting end face 311 to achieve venting and improve the operation response rate.

[0050] In an optional embodiment, the switch assembly 2 may be arranged radially on the side of the self-locking valve 3 along the cover 1, or it may be arranged in other directions on the side of the self-locking valve 3.

[0051] like Figure 6 As shown, the switch assembly 2 is arranged radially on the side of the self-locking valve 3 along the cover 1. The center line connecting the first limiting area 411 and the second limiting area 412 extends radially along the cover 1. Correspondingly, the limiting through groove 41 extends radially along the cover 1.

[0052] The limiting groove 41 also includes a first clearance area 413 that connects the first limiting area 411 and the second limiting area 412. The first clearance area 413 is a narrow groove section, the width of which is less than the width of the first limiting area 411 and the second limiting area 412, and greater than the outer diameter of the part of the valve core 31 located inside the limiting groove 41 when it is in a hanging state.

[0053] like Figure 6 As shown, when the valve core 31 is in the hanging state, its smaller outer diameter segment is located within the first limiting area 411. Since the width of the first clearance area 413 is greater than the outer diameter of the aforementioned segment, the valve core 31 does not restrict the opening and closing of the clamping mechanism 4. When the valve core 31 is in the lifting state, its larger outer diameter segment is located within the first limiting area 411. Since the width of the first clearance area 413 is less than the first limiting area 411, the clamps in the clamping mechanism 4, which have limiting through grooves 41, cannot move outward, and the pot lid cannot be opened.

[0054] The above-described embodiment allows the first limiting area 411 and the second limiting area 412 to be disposed in the same limiting through groove 41. Compared with the two being disposed separately in different limiting through grooves 41, the length space of the clamp can be fully utilized, and there is no need to set the clamp to a large width.

[0055] In alternative implementations, such as Figure 6 As shown, the second limiting area 412 is located on the side of the first limiting area 411 near the center of the cover 1. The limiting through groove 41 also includes a second clearance area 414 located in the second limiting area 412 away from the first clearance area 413. The width of the second clearance area 414 is less than the outer diameter of the pressing member 22 and greater than or equal to the outer diameter of the fixing member 21.

[0056] The above settings ensure that after the pressing member 22 exits the second limiting zone 412, and at the same time the valve core 31 is in the fallen state, when the clamp is opened, the fixing member 21 can smoothly enter the second clearance zone 414. The second clearance zone 414 plays a clearance role for the fixing member 21, and at the same time ensures that when the pressing member 22 is in the second limiting zone 412, the pressing member 22 will not be dislodged from the second limiting zone 412 by the second clearance zone 414.

[0057] A second aspect of the present invention provides a pressure cooker, which includes the aforementioned lid.

[0058] The pressure cooker provided in the second aspect of the present invention has the lid provided in the first aspect of the present invention, thereby having all the beneficial effects of the lid provided in the first aspect of the present invention.

[0059] In the pressure cooker mentioned above, such as Figure 2 As shown, the line connecting the centers of the first limiting area 411 and the second limiting area 412 is parallel to the direction in which the two handles 5 on the pot body are positioned opposite each other.

[0060] During cooking, the handle 5 is usually located on the left and right sides of the pot. The above setting makes it easier for the user to avoid the self-locking valve 3 when pressing down the pressing part 22, thus preventing steam from spraying directly onto the arm and making it easier for the user to operate.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pot lid, characterized in that, It includes a cover (1), a switch assembly (2), a self-locking valve (3), and a clamping mechanism (4); The self-locking valve (3) is installed on the cover (1), and the self-locking valve (3) includes a valve core (31) that is axially movably configured along the cover (1). The switch assembly (2) includes a fixing member (21) and a pressing member (22) that is movably engaged with the fixing member (21). The pressing member (22) is slidably engaged with the valve core (31) along the axial direction of the cover (1) and is used to press down the valve core (31) in the pressed state. The clamping mechanism (4) is installed on the cover (1). The clamping mechanism (4) has a limiting groove (41). The limiting groove (41) includes a first limiting area (411) that cooperates with the valve core (31) in the lifting state to lock the clamping mechanism (4) and a second limiting area (412) that cooperates with the pressing member (22) in the pressing state to lock the clamping mechanism (4).

2. The pot lid according to claim 1, characterized in that, The switch assembly (2) further includes a reset member (23), which is installed between the fixing member (21) and the pressing member (22). The fixing member (21) has a limiting part (213) at one end away from the cover (1) to prevent the pressing member (22) from coming out of the fixing member (21).

3. The pot lid according to claim 1, characterized in that, The fastener (21) includes a guide section (211) having a first guide structure (2111) and the pressing member (22) having a second guide structure (221) that slides along the axial direction of the cover (1) and engages with the first guide structure (2111).

4. The pot lid according to claim 3, characterized in that, The fastener (21) includes a limiting section (212) located on one side of the guide section (211) along its axial direction; The limiting segment (212) has a clearance structure (2121) that allows the second guide structure (221) to rotate relative to it and restricts the axial position of the second guide structure (221) to limit the pressing member (22) to the pressing state.

5. The pot lid according to claim 1, characterized in that, The pressing component (22) includes a pressing button (222) and a pressing rod (223). The pressing button (222) is movably engaged with the fixing component (21). The pressing rod (223) is connected to the pressing button (222) and has a side opening (2231) for the valve core (31) to extend into.

6. The pot lid according to claim 5, characterized in that, The pressure rod (223) is sleeved on the outside of the button (222) and rotates in cooperation with the button (222). The button (222) has a first limiting end face (2221) and a second limiting end face (2222) that restrict the axial movement of the pressure rod (223).

7. The pot lid according to any one of claims 1-6, characterized in that, The valve core (31) has a third limiting end face (311). When the valve core (31) is in the lifting state and the pressing member (22) is in the reset state, the third limiting end face (311) abuts against or is separated from the pressing member (22) by a first distance.

8. The pot lid according to any one of claims 1-6, characterized in that, The center line connecting the first limiting area (411) and the second limiting area (412) extends radially along the cover (1); The limiting groove (41) further includes a first clearance area (413) connecting the first limiting area (411) and the second limiting area (412). The width of the first clearance area (413) is smaller than the width of the first limiting area (411) and the second limiting area (412), and is greater than or equal to the outer diameter of the portion of the valve core (31) located in the limiting groove (41) when it is in a hanging state.

9. The pot lid according to claim 8, characterized in that, The second limiting area (412) is located on the side of the first limiting area (411) near the center of the cover (1). The limiting through groove (41) also includes a second clearance area (414) located in the second limiting area (412) away from the first clearance area (413). The width of the second clearance area (414) is smaller than the outer diameter of the pressing member (22) and greater than or equal to the outer diameter of the fixing member (21).

10. A pressure cooker, characterized in that, Including the pot lid as described in any one of claims 1-9.

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