Cooking utensil

Abstract

The utility model provides a cooking utensil. The cooking utensil comprises a pot body, a cover body and a buckling piece. The cooker body is provided with a buckling edge. The cover body comprises an inner cover. The buckling piece is movably connected to the cover body between a locking position and an unlocking position, the buckling piece can be buckled to the upper portion of the inner cover, and the buckling piece can be buckled to the lower portion of the buckling edge. Wherein in the state that the buckling piece is located at the locking position, the buckling piece is buckled with the inner cover, the buckling area of the buckling piece and the inner cover is an upper buckling area, the buckling area of the buckling piece and the buckling edge is a lower buckling area, the gathering point of the stress action of the upper buckling area is an upper action point, and the gathering point of the stress action of the lower buckling area is a lower action point; the lower acting point is closer to the central axis of the cover body than the upper acting point, or the distance between the lower acting point and the central axis of the cover body is equal to that between the upper acting point and the central axis of the cover body. Therefore, the buckling piece is prevented from being separated from the buckling edge to be released due to downward inclination of the buckling piece, and the buckling piece can be kept in a locking state, so that the releasing is prevented.

Description

Technical Field

[0001] This utility model relates to cooking utensils. Background Technology

[0002] Existing cooking appliances use a locking mechanism to ensure a tight seal between the lid and the inner pot. The locking mechanism is movably connected to the lid. During cooking, pressure is applied to the locking mechanism from inside the cooking cavity. Uneven pressure can cause the locking mechanism to become unstable and easily slip off its locked position, potentially leading to a failure in the connection between the locking mechanism and the lid / pot.

[0003] Therefore, there is a need to provide a cooking appliance that can at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a cooking utensil, comprising:

[0006] The pot body has a snap-fit ​​edge;

[0007] A lid, which is closable and detachable from the pot body, the lid including an internally removable lid; and

[0008] A fastening element, movably connected to the cover body between a locked position and an unlocked position, the fastening element being capable of fastening to the top of the inner cover and to the bottom of the fastening edge; wherein,

[0009] When the fastener is in the locked position, the fastener is engaged with the inner cover. The engagement area between the fastener and the inner cover is the upper engagement area, and the point where the force is concentrated in the upper engagement area is the upper point of application. The fastener is engaged with the engagement edge, and the engagement area between the fastener and the engagement edge is the lower engagement area. The point where the force is concentrated in the lower engagement area is the lower point of application. The horizontal distance from the lower point of application to the central axis of the cover is less than or equal to the horizontal distance from the upper point of application to the central axis of the cover.

[0010] According to this solution, the fastening member is connected to the cover body, and the lower acting point is closer to the central axis of the cover body than the upper acting point, or the distances from the lower acting point and the upper acting point to the central axis of the cover body are equal, so as to avoid the fastening member from being disengaged from the fastening edge due to the downward inclination of the fastening member. The fastening member provided in this application can form a more stable structure with the fastening edge when受力, ensuring that the fastening member can maintain its locked state and thus preventing disengagement.

[0011] Optionally, in the projection along the height direction of the cooking appliance, the radial distance between the upper acting point and the lower acting point is greater than or equal to 5 mm.

[0012] According to this solution, this distance错开 the upper acting point and the lower acting point, making it easier for the fastening member to tilt upward during the pressure-bearing process, and it is not easy for the side of the fastening member far from the center of the cover body to flip downward and slide off, so as to effectively实现 the self-locking of the fastening member and prevent safety accidents caused by fastening failure.

[0013] Optionally, the fastening member includes an upper fastening portion, a lower fastening portion and a middle portion. The upper fastening portion and the lower fastening portion respectively extend from the upper and lower ends of the middle portion towards the center line direction of the cooking appliance. The upper fastening portion is fastened above the inner cover, and the upper acting point is located on the upper fastening portion. The lower fastening portion is fastened below the fastening edge, and the lower acting point is located on the lower fastening portion.

[0014] According to this solution, the fastening member forms a structure similar to a "匚" shape, so as to be able to form a certain clamping space, and such a structure is more uniformly stressed and has higher strength.

[0015] Optionally, the middle portion includes an upper wall, a connecting wall and a lower wall that are sequentially connected from top to bottom along the height direction. The upper wall is connected to the upper fastening portion. The connecting wall extends radially inwards and is respectively connected to the upper wall and the lower wall. The upper wall is arranged radially outside the lower wall.

[0016] According to this solution, the connecting wall extends radially inwards, causing the lower wall to be offset inwards, making the lower acting point of the lower fastening portion closer to the center side of the cover body and making it easier to实现 the self-locking of the fastening member. At the same time, the middle portion is constructed in multiple segments to improve the overall strength and ensure the stable connection between the cover body and the pot body.

[0017] Optionally, the connecting wall is倾斜于 the upper wall, and the connecting wall is倾斜于 the lower wall.

[0018] According to this solution, the倾斜 connecting wall makes the middle portion have higher strength.

[0019] Optionally, the height of the upper wall is n1, and the height of the inner cover accommodated in the fastening member is m1, n1≥m1.

[0020] According to this design, the upper wall can correspond to the edge of the inner cover. During the upward movement of the inner cover as it is pushed up and the latching part rises, the upper wall remains aligned with the inner cover.

[0021] Optionally, the height of the lower wall is n2, the thickness of the fastening edge is m2, and n2 ≥ m2 + 2.5 mm.

[0022] According to this design, the lower wall can correspond to the snap-fit ​​edge. The limitation of a distance difference of 2.5mm or more provides sufficient space to accommodate the upward movement of the inner cover, while ensuring the correspondence between the snap-fit ​​component and the snap-fit ​​edge.

[0023] Optionally, the middle section is constructed with straight walls.

[0024] According to this solution, the fastener has a simple structure and high versatility and compatibility.

[0025] Optionally, the distance between the upper and lower fastening parts along the height direction is n3, and when the fastening parts are in the locked position, the distance between the upper surface of the inner cover and the lower surface of the fastening edge is m3, where n3 ≥ m3 + 2.5 mm.

[0026] According to this plan, the distance difference limit of 2.5mm or more provides sufficient space to accommodate the upward movement of the inner cover.

[0027] Optionally, along the projection of the cooking appliance in the height direction, the portion of the inner cover that engages with the fastener protrudes outward or is flush with the portion of the fastening edge that engages with the fastener.

[0028] According to this solution, the relative position of the inner cover and the snap-fit ​​edge is better matched with the relative positions of the upper and lower action points. Attached Figure Description

[0029] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0030] Figure 1 This is a three-dimensional exploded view of a cooking appliance according to a preferred embodiment of the present invention.

[0031] Figure 2 This is a cross-sectional schematic diagram of a cooking utensil according to a preferred embodiment of the present invention;

[0032] Figure 3 This is a partial top view of a cooking appliance according to a preferred embodiment of the present invention.

[0033] Figure 4 for Figure 3 A schematic diagram of the cross-section intercepted by the centerline AA;

[0034] Figure 5 for Figure 4 An enlarged schematic diagram of the first embodiment in Part B of the diagram;

[0035] Figure 6 This is a perspective view of the fastening component according to a preferred embodiment of the present invention;

[0036] Figure 7 This is a top view schematic diagram of the fastening component according to a preferred embodiment of the present invention;

[0037] Figure 8 For along Figure 7 A schematic diagram of the cross-section intercepted by the centerline CC;

[0038] Figure 9 for Figure 4 An enlarged schematic diagram of the second implementation method in Part B of the diagram;

[0039] Figure 10 This is a cross-sectional schematic diagram of the fastening component according to a second preferred embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures

[0041] 100:Cooker

[0042] 110: Pot Inner Wall

[0043] 120: middle plate

[0044] 130: Base

[0045] 140: Thermal Cover

[0046] 200: Cover

[0047] 210: Removable lid

[0048] 211: Removable cover mounting base

[0049] 220: Liner

[0050] 300: Fastener

[0051] 310: Upper snap-fit ​​part

[0052] 320: Middle section

[0053] 321: Up the wall

[0054] 322: Connecting wall

[0055] 323: Lower wall

[0056] 330: Lower snap-fit ​​part

[0057] 340: Connector

[0058] 400: Transmission frame Detailed Implementation

[0059] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0060] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0061] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0062] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0063] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0064] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0065] This invention provides a cooking appliance. The cooking appliance of this invention can function as a rice cooker, electric pressure cooker, electric slow cooker, electric hot pot, and soy milk maker. The cooking appliance is suitable for pressure cooking.

[0066] The following will combine Figures 1 to 10 A detailed description of the cooking utensil according to this utility model is provided.

[0067] like Figure 1 As shown, the cooking appliance of this utility model includes a lid 200 and a pot body 100. The pot body 100 is used for cooking food, and the lid 200 is used to cover the pot body 100. For example, the lid 200 is connected to the pot body 100 in an openable and closable manner to cover the pot body 100. When the lid 200 covers the pot body 100, a cooking space is formed between the lid 200 and the pot body 100. Optionally, when the lid 200 covers the pot body 100, the lid 200 is sealed to the inner pot 110.

[0068] The pot body 100 is typically a rounded rectangular parallelepiped shape and has a cylindrical inner pot storage section. The pot body 100 includes an inner pot 110, which can be freely inserted into or removed from the inner pot storage section for easy cleaning. The inner pot 110 is typically made of metal and is used to hold materials to be heated, such as rice or soup. The pot body 100 also includes a middle plate 120 and a base 130. The middle plate 120 is located at the top of the pot body 100, and the base 130 is located on the sides and bottom of the pot body 100. The middle plate 120 is fixedly mounted to the base 130.

[0069] To reduce heat loss during cooking and to prevent mutual interference between the inner pots 110 and the outer pot, the pot body 100 also includes a heat insulation cover 140 disposed around the outer periphery of the inner pot 110. The heat insulation cover 140 is located between the inner pot 110 and the base 130.

[0070] like Figures 1-4 As shown, the cover 200 includes a top cover, a liner 220, and an inner cover. The inner cover is a removable cover 210. The top cover is located on the outermost side of the cover 200, forming the outer shell of the cover 200. The liner 220 is located below the top cover and connected to it. For example, the liner 220 can be connected to the top cover via fasteners or snap-fits. The top cover and liner 220 constitute the upper cover assembly. The upper cover assembly is mainly used to centrally mount various functional components of the cover 200 that sense and control the working status of the cooking appliance, such as sensors. The removable cover 210 is located on the innermost side of the cover 200 and is located below the liner 220. The removable cover 210 is detachably connected to the liner 220, for example, via snap-fits, for easy cleaning and replacement. The removable cover 210 is oriented towards the cooking space; that is, when the cover 200 is in the closed position, the removable cover 210 is directly above the cooking space.

[0071] To facilitate the removal of the removable cover 210 and to enhance its strength, the cover body 200 also includes a removable cover mounting base 211. The removable cover 210 is mounted to the cover body 200 via the removable cover mounting base 211. The removable cover 210 is fixedly connected to the removable cover mounting base 211. At least a portion of the removable cover 210 is located above the removable cover mounting base 211. During cooking, the cooking space exerts an upward pushing force on the removable cover 210.

[0072] The cooking appliance also includes a locking assembly. The locking assembly includes a fastener 300, a transmission frame 400, and a drive component. The fastener 300 is movably mounted on the lid 200. The main function of the fastener 300 is to lock and unlock the lid 200 and the pot body 100 through its movement. Optionally, the fastener 300 is connected to the transmission frame 400, and driven by the drive component, the fastener 300 can move to lock or unlock the pot body 100. The transmission frame 400 allows multiple fasteners 300 to operate simultaneously. Optionally, the fastener 300 can move radially along the lid 200 to lock or unlock the edge of the inner pot 110, providing a simple and flexible locking and unlocking method. In this design, the radial direction of the lid 200 refers to a straight line perpendicular to the axis extending from the center of the lid 200 or the axis containing the center point. During cooking, when it is necessary to lock the lid 200 and the pot body 100, the drive mechanism activates, generating a driving force. This force is transmitted to the fastening element 300 via the transmission frame 400, causing the fastening element 300 to move towards the center of the pot body 100. When the fastening element 300 moves to the appropriate position, it securely locks the lid 200 and the pot body 100 together. Optionally, when the fastening element 300 is in the locked position, it can engage with the pot body 100. When it is necessary to open the lid 200, the drive mechanism drives the transmission frame 400 to move in the opposite direction, causing the fastening element 300 to move away from the center of the pot body 100. When the fastening element 300 moves to the appropriate position, it disengages from the pot body 100, allowing the lid 200 to open, and the fastening element 300 is in the unlocked position.

[0073] In this design, the fastening element 300 can engage with the edge of the inner pot 110 or the edge of the insulation cover 140. For example, in a rice cooker, the fastening element 300 can engage with the edge of the inner pot 110. For example, in an electric pressure cooker, the edge of the insulation cover 140 is at least partially exposed, and the fastening element 300 can engage with the edge of the insulation cover 140. For ease of explanation, the following description focuses on the fastening element 300 engaging with the edge of the inner pot 110.

[0074] like Figures 1 to 3As shown, the transmission frame 400 and the driving member are arranged above the lining cover 220. The fastening member 300 is arranged between the lining cover 220 and the detachable cover 210. The fastening member 300 is connected to the transmission frame 400 through the connecting member 340.

[0075] The lining cover 220 is provided with a connecting groove penetrating along its thickness direction. The connecting groove is in the same direction as the moving direction of the fastening member 300. The connecting member 340 extends from below the lining cover 220 to above the lining cover 220 through the connecting groove, so that the fastening member 300 is suspended on the lining cover 220 and moves along the connecting groove under the drive of the transmission frame 400. The hanging connection method greatly simplifies the assembly structure between the fastening member 300 and the lining cover 220. While realizing the movable connection, the connecting member 340 can serve as a transmission structure to transmit the driving force of the driving member to the fastening member 300.

[0076] As Figures 4 to 10 shown, in some embodiments of the present utility model, the fastening member 300 includes an upper fastening portion 310, a lower fastening portion 330 and an intermediate portion 320. The upper fastening portion 310 and the lower fastening portion 330 respectively extend from the upper and lower ends of the intermediate portion 320 to one side thereof. Specifically, the upper fastening portion 310 and the lower fastening portion 330 respectively extend from the upper and lower ends of the intermediate portion 320 towards the center line direction of the cooking appliance. The fastening member 300 forms a structure similar to a "匚" shape, so as to be able to form a certain clamping space, and such a structure has more uniform force and higher strength. Part of the cover body 200 and part of the pot body 100 are clamped between the upper fastening portion 310 and the lower fastening portion 330. The cooperative setting of the upper fastening portion 310 and the lower fastening portion 330 provides clamping in two directions, upward and downward, for the cover body 200 and the pot body 100, improves the connection stability, and ensures good sealing performance during pressure cooking. Optionally, the upper fastening portion 310 is connected to the lining cover 220, and the lower fastening portion 330 can be selectively connected to or disengaged from the pot liner 110 to switch between the locking position and the unlocking position.

[0077] When the cooking appliance is in operation, especially during high-pressure cooking, the high-temperature and high-pressure environment inside the pot body 100 will exert a pushing force on the lid 200. The removable lid 210 is located directly above the inner pot 110, and it will withstand a huge upward pushing force from inside the cooking space. In some scenarios, such as when the connection between the fastener 300 and the connector 340 may loosen or break, a failure in the connection will cause the transmission frame 400 to lose its locking function on the fastener 300. Since the removable lid 210 is under continuous force during cooking, it will continuously push the upper fastening part 310 of the fastening member 300, causing the fastening member 300 to move upward and the lower fastening part to abut against the edge of the inner pot 110. When the fastening member is under unbalanced force, especially when the side of the fastening member 300 away from the removable lid 210 tilts downward, the connection between the lower fastening part 330 and the inner pot 110 may fail, thereby affecting the connection stability between the lower fastening part 330 and the inner pot 110.

[0078] When the fastener 300 is in the locked position, it engages with the removable cover 210. The engagement area between the fastener 300 and the removable cover 210 is the upper engagement area, and the point where the force acts on the upper engagement area is the upper point of application, with a force of F1. Specifically, the upper point of application is the point where the force acts on the upper engagement portion 310 of the fastener 300 when it engages with the removable cover 210, or its equivalent position in force analysis. The engagement area where the fastener 300 engages with the edge of the inner pot 110 is the lower engagement area, and the point where the force acts on the lower engagement area is the lower point of application, with a force of F2. Specifically, the lower point of application is the point where the force acts on the lower engagement portion 330 of the fastener 300 when it engages with the inner pot 110, or its equivalent position in force analysis. (Refer to...) Figure 5 In this design, the horizontal distance from the lower point of action to the central axis of the cover 200 is less than or equal to the horizontal distance from the upper point of action to the central axis of the cover 200. This makes it easier for the fastener 300 to tilt upwards or remain horizontal during pressure application, and the side of the fastener 300 away from the center of the cover 200 is less likely to flip downwards and slip off, thus effectively achieving self-locking of the fastener 300 and preventing safety accidents caused by fastening failure. If the upper point of action is located radially inside the lower point of action, the fastener 300 will experience uneven force and may flip downwards. Under its own weight, the fastener 300 will be more likely to move away from the fastening edge, thus posing a risk of slipping off and disengaging, leading to connection failure.

[0079] It should be noted that, referring to Figure 4 and Figure 5As shown, when the fastener 300 is fastened to the removable cover 210, a force-bearing surface or line of action is formed between the upper fastening portion 310 and the removable cover 210. This force-bearing surface or line of action is the upper fastening area. The upper point of action is the equivalent position of this force-bearing surface or line of action. The upper point of action is located at the upper fastening portion 310. When the upper fastening area has a regular geometric shape, the upper point of action is the geometric center of the upper fastening area. For example, when the upper fastening area is a square or rectangle, the center point is the upper point of action. Optionally, the upper point of action can also be the point of maximum stress on the force-bearing surface or line of action, or a point specified in the design. Similarly, when the fastener 300 is fastened to the edge of the inner pot 110, a force-bearing surface or line of action is formed between the lower fastening portion 330 and the edge of the inner pot 110. This force-bearing surface or line of action is the lower fastening area. The lower point of action is the equivalent position of this force-bearing surface or line of action. The lower point of action is located at the lower engagement part 330. When the lower engagement area has a regular geometric shape, the lower point of action is the geometric center of the lower engagement area. For example, when the lower engagement area is a square or a rectangle, the center point is the lower point of action. Optionally, the lower point of action can also be the point of maximum stress on the force-bearing surface or line of action, or a point specified in the design.

[0080] In some embodiments of this utility model, the removable cover 210 extends outward. Projected along the height direction of the cooking appliance, the removable cover 210 protrudes outward or is flush with the edge of the inner pot 110. As mentioned above, the fastening member 300 fastens to the outer peripheral edge of the removable cover 210. By extending the removable cover 210, the fastening area between the fastening member 300 and the removable cover 210 extends and increases outward, making the fastening structure more stable. According to this solution, by extending the point of action of the upper fastening portion 310 outward, the connection failure of the fastening member 300 is avoided. With the point of action of the lower latching part 330 remaining unchanged, the angle α between the line connecting the points of action of the upper latching part 310 and the lower latching part 330 and the horizontal line is limited to less than 90°. In this way, when the latching part 300 is subjected to pressure, the side away from the center of the cover 200 tends to tilt upward. At the same time, under the action of the latching part 300's own weight, the upper latching part 310 and the lower latching part 330 abut against the detachable cover 210 and the latching edge more tightly, making it less likely to slip off. Alternatively, when the angle α is limited to 90°, during the pressure process, the points of action of the upper latching part 310 and the lower latching part 330 are on a straight line, and the latching part 300 can remain horizontal, ensuring the locking effect of the latching part 300 on the detachable cover 210 and the latching edge. Whether the angle α is limited to less than 90° or equal to 90°, the self-locking function of the latching part 300 can be achieved. In this solution, the safety of the cooking appliance is improved by optimizing the layout and application point of the fastening between the detachable lid 210 and the fastening element 300. Even during high-pressure cooking, the lid 200 can withstand enormous thrust and maintain a stable fastening state, avoiding safety accidents caused by fastening failure.

[0081] In some embodiments of this utility model, the radial distance between the upper and lower action points, projected along the height direction of the cooking appliance, is greater than or equal to 5 mm. Specifically, the radial distance between the outer end of the force-bearing surface or line of action between the upper fastening part 310 and the detachable cover 210 and the inner end of the force-bearing surface or line of action between the lower fastening part 330 and the inner pot 110 is greater than or equal to 5 mm. (Refer to...) Figure 5 and Figure 9 L is the distance between the radially outer end of the force-bearing surface or line of action between the upper fastening part 310 and the detachable cover 210 and the radially inner end of the force-bearing surface or line of action between the lower fastening part 330 and the inner pot 110, where L ≥ 5mm. This distance staggers the upper and lower action points, effectively achieving self-locking of the fastening components and preventing safety accidents caused by fastening failure. By optimizing the layout of the fastening components 300, the stability of the cooking appliance during high-pressure cooking can be further improved.

[0082] This invention also improves the structure of the fastener 300 to further enhance its self-locking effect.

[0083] Reference Figures 5-8 This is the first embodiment of the fastening element 300.

[0084] As described above, the fastening component 300 includes an upper fastening portion 310, a middle portion 320, and a lower fastening portion 330. These three parts work together to ensure the stability and safety of the cooking appliance during high-pressure cooking. Optionally, the fastening component 300 is integrally formed.

[0085] The middle portion 320 of the fastening member 300 includes an upper wall 321, a connecting wall 322, and a lower wall 323 connected sequentially from top to bottom along the height direction. The upper wall 321 is connected to the upper fastening part 310, and the lower wall 323 is connected to the lower fastening part 330. The connecting wall 322 extends radially inward and is connected to both the upper wall 321 and the lower wall 323. In the projection along the height direction, the upper wall 321 is located radially outside the lower wall 323. The radial inward extension of the connecting wall 322 offsets the lower wall 323 inward, making the lower action point of the lower fastening part 330 closer to the center of the cover 200, thus facilitating the self-locking of the fastening member 300. Simultaneously, constructing the middle portion 320 as a multi-segment increases overall strength and ensures a stable connection between the cover 200 and the inner pot 110.

[0086] The upper wall 321 is located at the top of the fastening member 300 and is directly connected to the upper fastening part 310. The upper wall 321 mainly bears the vertical upward force from the upper fastening part 310 and transmits it to the connecting wall 322. The upper wall 321 is constructed as an upright structure; specifically, the projection of the upper end of the upper wall 321 along the height direction coincides with the projection of the lower end of the upper wall 321 along the height direction. Optionally, the projection of the upper wall 321 along the height direction is an arc-shaped structure. Specifically, the shape of the upper wall 321 is adapted to the shape of the edge of the removable cover 210.

[0087] The lower wall 323 is located at the bottom of the fastening member 300 and is directly connected to the lower fastening part 330. The lower wall 323 has an upright structure; specifically, the projection of the upper end of the lower wall 323 along the height direction coincides with the projection of the lower end of the lower wall 323 along the height direction. Optionally, the projection of the lower wall 323 along the height direction is an arc-shaped structure. Specifically, the shape of the lower wall 323 conforms to the shape of the edge of the pot liner 110. In the projection along the height direction, the lower wall 323 is located radially inside the upper wall 321. The radial offset between the upper wall 321 and the lower wall 323 allows the lower wall 323 to abut against the side of the edge of the pot liner 110. Under high pressure, the contact area of ​​the pot liner 110 is prone to compression deformation, and the lower wall 323 can limit the outward protrusion and deformation of the edge of the pot liner 110. The lower wall 323 abuts against the side of the edge of the inner pot 110. When the fastening part 300 is tilted inward, the lower wall 323 can contact the side of the edge of the inner pot 110, and the lower fastening part 330 will also abut against the lower surface of the edge of the inner pot 110, so as to prevent the fastening part 300 from disengaging due to excessive inward tilting angle.

[0088] When the fastener 300 is under stress, pressure acts on the upper fastening portion 310 and the lower fastening portion 330, making the fastener 300 easily deform to the upper and lower sides. The connecting wall 322 is located between the upper wall 321 and the lower wall 323, serving as a transition between the two. The connecting wall 322 extends radially inward, increasing the bending area of ​​the middle portion 320. This area has high shear resistance, can withstand strong connecting forces, and prevents deformation or breakage of the connection under pressure. Optionally, the connecting wall 322 is inclined to the upper wall 321. The connecting wall 322 is inclined to the lower wall 323. The arrangement of the connecting wall 322 makes the middle portion of the fastener stronger, able to withstand greater pressure without failure. At the same time, the inclined arrangement of the connecting wall 322 makes the middle portion 320 have an overall structure that slopes downwards towards the center line of the pot body 100, which helps to enhance the self-locking effect of the fastener 300.

[0089] In this design, the middle section 320 is inclined, which allows the fastener 300 to have a self-locking effect when subjected to pressure, thus ensuring a stable connection between the lid 200 and the pot body. The fastener 300 provided in this design has high structural strength and fits tightly with the detachable lid 210 and the pot body 100, saving internal space in the pot body 100.

[0090] In some embodiments of this invention, the upper wall 321 is further away from the edge than the lower wall 323 when projected along the height direction of the cooking appliance. In this embodiment, the relative positions of the upper wall 321 and the lower wall 323 limit the structure of the removable cover 210 protruding from or flush with the edge of the inner pot 110. Specifically, when the removable cover 210 protrudes from the edge of the inner pot 110, the fastening member 300 needs to ensure that the upper fastening part 310 can smoothly engage with the fastening area of ​​the removable cover 210. Since the upper wall 321 is further away from the edge than the lower wall 323, sufficient space is provided for the fastening part to accommodate the protruding shape of the removable cover 210. When the removable cover 210 is flush with the edge of the inner pot 110, the fastening member 300 also needs to ensure a stable fastening effect. Due to the inclined arrangement of the connecting wall 322, the fastening member 300 can generate a self-locking effect when subjected to force, thereby maintaining a stable fastening state. Regardless of whether the removable lid 210 protrudes outward or is flush with the edge of the inner pot 110, the fastening component 300 needs to withstand the thrust from the lid 200 and the pot body. The coordinated work of the upper wall 321, connecting wall 322, and lower wall 323 can optimize the force distribution and ensure that the fastening component 300 remains stable under force.

[0091] In some embodiments of this utility model, the height of the upper wall 321 is n1, and the height of the removable cover 210 housed within the fastening member 300 is m1, where n1 ≥ m1. Through this embodiment, the upper wall 321 can correspond to the edge of the removable cover 210. The setting of n1 ≥ m1 ensures that during the process of the removable cover 210 pushing the fastening part 310 upwards, the upper wall 321 can still maintain its correspondence with the removable cover 210.

[0092] In some embodiments of this utility model, the height of the lower wall 323 is n2, and the thickness of the edge of the inner pot 110 is m2, where n2 ≥ m2 + 2.5 mm. Through this embodiment, the lower wall 323 corresponds to the edge of the inner pot 110. Considering that the low-pressure detachable cover 210 and the latch assembly will have a certain upward displacement when the cooking appliance is pressed down during operation, a distance difference of ≥ 2.5 mm is provided to accommodate this displacement, while ensuring the correspondence between the fastener 300 and the edge of the inner pot 110.

[0093] In some embodiments of this utility model, the distance between the upper latching part 310 and the lower latching part 330 along the height direction is n3. When the latching member 300 is in the locked position, the distance between the upper surface of the removable cover 210 and the lower surface of the edge of the inner pot 110 is m3, where n3 ≥ m3 + 2.5 mm. When the latching member 300 is in the locked state, the removable cover 210 and the edge of the inner pot 110 are engaged between the upper latching part 310 and the lower latching part 330 of the latching member 300. Considering that the removable cover 210 and the latching member 300 will have a certain upward displacement when the cooking appliance is under pressure, a distance difference of ≥ 2.5 mm is provided to accommodate this displacement, ensuring a sealed connection between the removable cover 210 and the inner pot 110, while ensuring that the latching member 300 is not obstructed during the latching process.

[0094] Reference Figure 9 and Figure 10 This is the second embodiment of the fastening element 300.

[0095] As described above, the fastening component 300 includes an upper fastening portion 310, a middle portion 320, and a lower fastening portion 330. These three parts work together to ensure the stability and safety of the cooking appliance during high-pressure cooking. Optionally, the fastening component 300 is integrally formed.

[0096] The middle portion 320 of the fastener 300 is constructed as a straight wall. Specifically, the middle portion 320 is constructed as an upright structure. The projection of the upper end of the middle portion 320 along the height direction coincides with the projection of the lower end of the middle portion 320 along the height direction. Optionally, the projection of the middle portion 320 along the height direction is an arc-shaped structure. Specifically, the shape of the middle portion 320 is adapted to the shape of the edge of the removable cover 210.

[0097] As described above, the removable cover 210 protrudes outward from or is flush with the edge of the inner pot 110 when projected along the height direction of the cooking utensil. In this embodiment, the distance between the middle portion 320 and the removable cover 210 is smaller than the distance between the middle portion 320 and the edge of the inner pot 110. During the fastening process, the fastening member 300 can first make close contact with the removable cover 210, and can ensure that the angle α between the line connecting the upper action point of the upper fastening portion 310 and the lower action point of the lower fastening portion 330 and the horizontal line is less than 90°. Compared with the first embodiment, the width of the lower fastening portion 330 is extended to better fasten to the inner pot 110. The fastening member 300 provided by this solution can better adapt to inner pots 110 and removable covers 210 of different sizes, improving the versatility and compatibility of the cooking utensil.

[0098] The distance between the upper latching part 310 and the lower latching part 330 along the height direction is n3, and the distance between the upper surface of the removable cover 210 and the lower surface of the edge of the inner pot 110 is m3, where n3 ≥ m3 + 2.5 mm. When the latching member 300 is in the locked state, the removable cover 210 and the edge of the inner pot 110 are engaged between the upper latching part 310 and the lower latching part 330 of the latching member 300. Considering that the removable cover 210 and the latching assembly will have a certain upward floating distance when the cooking appliance is pressed up, a distance difference of ≥ 2.5 mm is reserved to accommodate this upward floating amount, ensuring the sealed connection between the removable cover 210 and the inner pot 110, and ensuring that the latching member 300 is not obstructed during the latching process.

[0099] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0100] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cooking utensil, characterized in that, include: The pot body has a snap-fit ​​edge; A lid, which is closable and disposed on the pot body, the lid including an inner lid; and A fastening element, movably connected to the cover body between a locked position and an unlocked position, the fastening element being capable of fastening to the top of the inner cover and to the bottom of the fastening edge; wherein, When the fastener is in the locked position, the fastener is engaged with the inner cover, and the engagement area between the fastener and the inner cover is the upper engagement area. The point where the force is concentrated in the upper engagement area is the upper point of action. The fastener is engaged with the engagement edge, and the engagement area between the fastener and the engagement edge is the lower engagement area. The point where the force is concentrated in the lower engagement area is the lower point of action. The horizontal distance from the lower point of action to the central axis of the cover is less than or equal to the horizontal distance from the upper point of action to the central axis of the cover.

2. The cooking utensil according to claim 1, characterized in that, The radial distance between the upper action point and the lower action point is greater than or equal to 5 mm when projected along the height direction of the cooking appliance.

3. The cooking utensil according to claim 1, characterized in that, The fastening component includes an upper fastening part, a lower fastening part, and a middle part. The upper fastening part and the lower fastening part extend from the upper and lower ends of the middle part toward the center line of the cooking appliance, respectively. The upper fastening part fastens to the top of the inner cover, and the upper action point is located at the upper fastening part. The lower fastening part fastens to the bottom of the fastening edge, and the lower action point is located at the lower fastening part.

4. The cooking utensil according to claim 3, characterized in that, The intermediate portion includes an upper wall, a connecting wall, and a lower wall connected sequentially from top to bottom along the height direction. The upper wall is connected to the upper fastening portion, and the lower wall is connected to the lower fastening portion. The connecting wall extends radially inward and is connected to the upper wall and the lower wall respectively, with the upper wall located radially outward of the lower wall.

5. The cooking utensil according to claim 4, characterized in that, The connecting wall is inclined to the upper wall, and the connecting wall is inclined to the lower wall.

6. The cooking utensil according to claim 4 or 5, characterized in that, The height of the upper wall is n1, and the height of the area where the inner cover is housed within the fastener is m1, where n1 ≥ m1.

7. The cooking utensil according to claim 4 or 5, characterized in that, The height of the lower wall is n2, and the height of the fastening edge is m2, where n2 ≥ m2 + 2.5 mm.

8. The cooking utensil according to claim 3, characterized in that, The middle section has a straight wall structure.

9. The cooking utensil according to claim 4 or 8, characterized in that, The distance between the upper and lower fastening parts along the height direction is n3. When the fastening parts are in the locked position, the distance between the upper surface of the inner cover and the lower surface of the fastening edge is m3, and n3 ≥ m3 + 2.5 mm.

10. The cooking utensil according to claim 1, characterized in that, Projected along the height direction of the cooking appliance, the portion of the inner cover that engages with the fastener protrudes outward or is flush with the portion of the fastening edge that engages with the fastener.

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