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 lining cover is provided with a mounting groove which is provided with a bottom wall. The buckling piece is movably connected to the lining cover, the buckling piece comprises an upper buckling part suitable for being matched with the cover body and a lower buckling part suitable for being matched with the pot container, the upper buckling part extends into the mounting groove, and the moving direction of the buckling piece is the same as the extending direction of the mounting groove. The upper buckling part comprises a body part and a step part, the step part is located at the end, close to the mounting groove, of the body part, the step part is higher than the body part, and in the moving process of the buckling piece, at least part of the step part is located above the bottom wall of the mounting groove all the time. Through the arrangement of the installation groove, it is ensured that the buckling piece keeps a preset track in the moving process, deflection of the buckling piece is avoided, and the buckling piece keeps the correct position and posture all the time. Through the arrangement of the step part, the buckling piece is effectively prevented from interfering with the bottom wall of the limiting groove due to the small distance in the moving process.

Description

Technical Field

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

[0002] Existing cooking appliances use a locking system where the upper end of the lock engages with the lid and the lower end with the inner pot. The distance between the upper and lower ends of the lock needs to match the distance between the lid and the inner pot to ensure a tight seal. The lock is usually movably connected to the lid, and is prone to deflection during movement. Therefore, a limiting structure is needed to prevent deflection. However, the lock can easily interfere with the limiting structure, causing uneven movement.

[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, wherein a pot inner liner is provided inside the pot body;

[0007] A lid, which is closable and disposed on the pot body, the lid comprising:

[0008] A liner having a mounting groove having a bottom wall; and

[0009] A fastening element, movably connected to the liner, the fastening element including an upper fastening portion adapted to engage with the liner body and a lower fastening portion adapted to engage with the inner pot, the upper fastening portion extending into the mounting groove, the fastening element moving in the same direction as the extension direction of the mounting groove, the upper fastening portion including:

[0010] Body part;

[0011] The stepped portion is located at the end of the body portion near the mounting groove. The stepped portion is higher than the body portion. During the movement of the fastener, at least a portion of the stepped portion is always located above the bottom wall of the mounting groove.

[0012] According to this utility model, the cooking appliance, through the design of the mounting groove, not only ensures that the fastening component maintains a predetermined trajectory during movement, but also prevents its deflection, ensuring that the fastening component always maintains its correct position and posture. The stepped portion guides the main body into the mounting groove, effectively preventing interference between the fastening component and the bottom wall of the limiting groove due to the small gap between the upper and lower fastening portions during movement. The stepped portion also reduces friction and wear on the fastening component during movement.

[0013] Optionally, the stepped portion includes:

[0014] A first step, the first step being connected to the main body;

[0015] A second step, the second step being connected to the side of the first step away from the body portion; wherein...

[0016] Both the first step and the second step are higher than the main body, and the first step is higher than the second step.

[0017] According to this design, the first step is suspended when the main body contacts the bottom wall of the mounting groove. Simultaneously, the arrangement of the first step further reduces the overlap area between the main body, the second step, and the bottom wall of the mounting groove along the height direction.

[0018] Optionally, the height difference between the lower surface of the first step and the lower surface of the body is 0.5-5mm.

[0019] According to this solution, by setting a reasonable height difference, it is possible to ensure that the main body is more easily installed into the mounting groove, resulting in a smaller overall height of the cover, while ensuring the strength of the upper fastening part.

[0020] Optionally, a first transition portion is provided at the connection between the stepped portion and the main body portion, and the first transition portion is an arc-shaped structure.

[0021] According to this solution, the arc-shaped structure, as a continuous and smooth transition form, can effectively disperse the stress borne by the step connection. At the same time, it avoids the large impact force or resistance generated when the connection between the step and the body collide with the bottom wall of the mounting groove during the reciprocating movement of the fastener due to right angles or acute angles, which would make the fastener prone to deflection. The arc-shaped structure can guide the fastener to move more smoothly on the bottom wall of the mounting groove.

[0022] Optionally, a second transition section is provided at the connection between the first step and the second step, and the second transition section is an arc-shaped structure.

[0023] According to this solution, the arc-shaped structure, as a continuous and smooth transition form, can effectively disperse the stress borne by the step connection. At the same time, it can guide the fasteners to move more smoothly and avoid additional friction caused by right-angle or acute-angle contact.

[0024] Optionally, the mounting groove has two sidewalls spaced apart along its extension direction, the sidewalls of the two mounting grooves being located on both sides of the width direction of the fastener;

[0025] The sidewall and bottom wall of the mounting groove define an installation opening, and the fastener extends into the mounting groove through the installation opening.

[0026] According to this solution, the structure of the mounting slot simplifies the installation process of the fasteners, enabling them to be quickly positioned and installed into the mounting slot.

[0027] Optionally, the mounting groove further has a top wall, and the distance between the top wall of the mounting groove and the bottom wall of the mounting groove is greater than the distance between the top wall of the stepped portion and the bottom wall of the body portion.

[0028] According to this solution, the large gap between the top and bottom walls of the mounting groove ensures that the fasteners have enough space to move and adjust during installation to achieve precise fit and positioning.

[0029] Optionally, at least a portion of the top wall of the mounting groove is provided as an opening.

[0030] According to this solution, the opening facilitates demolding, and a reinforcing rib made of iron or other materials can be installed above the opening to provide stronger restraint on the upper latching part in the height direction, preventing the upper latching part from lifting up and crushing the top of the mounting groove during movement.

[0031] Optionally, the bottom wall of the mounting groove is constructed as a sloping surface that slopes from high to low from the center of the cover toward the edge of the cover.

[0032] According to this design, the inclined surface can abut against the rear part of the fastener on the side furthest from the center of the cover, allowing the fastener to easily maintain a horizontal state or a slightly upward-sloping radial end under high-pressure locking. This reduces the risk of the fastener tilting and moving in the unlocking direction, thus facilitating more reliable fastening of the lower fastening part. Simultaneously, the inclined bottom wall can also serve as a guide structure, helping the fastener move more smoothly to the predetermined position during installation, reducing resistance and friction.

[0033] Optionally, the inclination of the inclined surface is 0.3-5°.

[0034] According to this plan, the tilt setting needs to take into account the overall structural stability of the mounting groove and fasteners.

[0035] Optionally, the fastening element is movably connected to the mounting slot between the unlocked position and the locked position; wherein,

[0036] When the fastener is in the unlocked position, the length by which the fastener overlaps with the mounting groove in the radial direction is d1; when the fastener is in the locked position, the length by which the fastener overlaps with the mounting groove in the radial direction is d2, d1 is less than d2, and the range of d1 is 1-15mm.

[0037] According to this scheme, a larger d2 value ensures the stability of the fastener in the locked position, while a smaller d1 value optimizes space utilization and prevents the fastener from dislodging from the mounting slot during movement, thus improving the stability of the connection between the fastener and the cover.

[0038] Optionally, the corner of the end of the upper fastening portion facing the mounting groove is set as a rounded corner or a chamfer.

[0039] According to this solution, the use of rounded or chamfered corners ensures a smooth fit between the fastening part and the mounting groove, reduces interference, and thus improves the stability and reliability of the product's fit.

[0040] Optionally, the liner has a limiting groove on one side facing the pot body, the extending direction of the limiting groove is the same as the moving direction of the fastener, and at least part of the fastener is always located in the limiting groove during the movement of the fastener.

[0041] The limiting groove is connected to the mounting groove, and the limiting groove and the mounting groove are spaced apart along the radial direction of the cover.

[0042] According to this solution, the interconnected limiting groove and mounting groove play an important role in the installation and movement of the fastener.

[0043] Optionally, the limiting groove has a top wall, the upper fastening part is spaced apart from the limiting groove along the height direction of the cover, and during the movement of the fastening part, at least a portion of the upper fastening part is always located below the top wall of the limiting groove.

[0044] According to this solution, the fasteners are prevented from coming out of the limiting groove during movement, while ensuring that the fasteners maintain the correct posture throughout the movement.

[0045] Optionally, the limiting groove has two sidewalls spaced apart along the circumferential direction of the cover, and the sidewalls of the two limiting grooves are located on both sides of the width direction of the fastener;

[0046] The fastening element is movably connected to the limiting groove between the unlocked position and the locked position; wherein,

[0047] When the fastener is in the unlocked position, the length of the fastener overlapping the side wall of the limiting groove in the radial direction is d3; when the fastener is in the locked position, the length of the fastener overlapping the side wall of the limiting groove in the radial direction is d4, where d3 is greater than d4 and d4 is in the range of 1-15mm.

[0048] According to this design, a larger d3 value ensures that the fastener is as far away from the center of the lid as possible when in the unlocked position, meaning it is as far away from the edge of the pot as possible. Conversely, a smaller d4 value ensures that the fastener is as close as possible to the center of the lid when in the locked position, meaning it is as close as possible to the edge of the pot, thus guaranteeing the stability of the fastener.

[0049] Optionally, the cover is provided with a connecting groove, the extending direction of the connecting groove is the same as the moving direction of the fastener, the fastener is connected to a connector, and the connector is connected to the connecting groove.

[0050] According to this solution, the hanging connection method greatly simplifies the assembly structure between the fasteners and the liner.

[0051] Optionally, the connecting groove is located within the limiting groove.

[0052] According to this solution, the connecting groove is set inside the limiting groove, which can effectively utilize space and make the overall structure more compact.

[0053] Optionally, the connector is located radially inside the center of gravity of the fastening member, or the centerline of the connector is collinear with the center of gravity of the fastening member; and / or

[0054] The distance between the centerline of the connector and the center of gravity of the fastener in the radial direction is less than or equal to 6 mm.

[0055] This solution ensures the stability of the fasteners after installation. When the fasteners are not in contact with the fastening edge, they tend to remain horizontal, or one radially outer end of the fastener is slightly tilted downwards. This allows the lower fastening part to move more easily below the fastening edge of the pot during the fastening process, preventing interference and jamming, thus improving the reliability and stability of the fastening. Attached Figure Description

[0056] 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,

[0057] Figure 1 This is a three-dimensional exploded view of a cooking appliance according to a preferred embodiment of the present invention.

[0058] Figure 2 This is a three-dimensional cross-sectional view of a cooking utensil according to a preferred embodiment of the present invention.

[0059] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the diagram;

[0060] Figure 4 This is a three-dimensional sectional view of the cover body according to a preferred embodiment of the present invention;

[0061] Figure 5 for Figure 4 An enlarged schematic diagram of part B in the diagram;

[0062] Figure 6 This is a three-dimensional sectional view of the liner and transmission frame according to a preferred embodiment of the present invention, in which the fastening element is located in the locking position;

[0063] Figure 7 for Figure 6 An enlarged schematic diagram of part C in the diagram;

[0064] Figure 8 This is a perspective sectional view of the liner and transmission frame according to a preferred embodiment of the present invention, with the fastening element located in the unlocked position.

[0065] Figure 9 for Figure 8 An enlarged schematic diagram of part D in the diagram;

[0066] Figure 10 This is a perspective sectional view of the liner and transmission frame from another angle, representing a preferred embodiment of the present invention.

[0067] Figure 11 This is a three-dimensional schematic diagram of a fastening component according to a preferred embodiment of the present invention;

[0068] Figure 12 This is a cross-sectional schematic diagram of a fastening component according to a preferred embodiment of the present invention;

[0069] Figure 13 This is a partial cross-sectional view of a cooking appliance according to a preferred embodiment of the present invention, in which the fastener is located in the locking position;

[0070] Figure 14 This is a partial cross-sectional view of a cooking appliance according to a preferred embodiment of the present invention, with the fastener in the unlocked position.

[0071] Explanation of reference numerals in the attached figures

[0072] 100:Cooker

[0073] 110: Pot Inner Wall

[0074] 111: Edge

[0075] 200: Cover

[0076] 210: Liner

[0077] 2101: Mounting slot

[0078] 21011: Installation port

[0079] 21012: Opening

[0080] 2102: Limiting groove

[0081] 2103: Connecting slot

[0082] 220: Removable lid

[0083] 300: Fastener

[0084] 310: Upper snap-fit ​​part

[0085] 311: Ontology Department

[0086] 3121: The First Step

[0087] 3122: The Second Step

[0088] 3131: First Transition Section

[0089] 3132: Second Transition Section

[0090] 320: Middle section

[0091] 330: Lower snap-fit ​​part

[0092] 340: Connector

[0093] 400: Transmission frame Detailed Implementation

[0094] 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.

[0095] 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."

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] This invention provides a cooking appliance. The cooking appliance of this invention can function as a pressure rice cooker, electric pressure cooker, electric slow cooker, electric hot pot, soy milk maker, and blender, etc. The cooking appliance is suitable for pressure cooking.

[0101] The following will combine Figures 1 to 14 A detailed description of the cooking utensil according to this utility model is provided.

[0102] like Figure 1 and Figure 2As 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.

[0103] The pot body 100 is typically a rounded rectangular prism shape and has a cylindrical inner pot 110 storage section. The inner pot 110 can be freely placed into or removed from the inner pot 110 storage section for easy cleaning. The inner pot 110 is usually made of metal and is used to hold materials to be heated, such as rice or soup.

[0104] like Figures 1 to 10 As shown, the cover 200 includes a top cover, a liner 210, and a removable cover 220. The top cover is located on the outermost side of the cover 200, forming the outer shell of the cover 200. The liner 210 is located below the top cover and is connected to the top cover. For example, the liner 210 can be connected to the top cover by fasteners or snaps. The top cover and the liner 210 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 220 is located on the innermost side of the cover 200 and is located below the liner 210. The removable cover 220 is detachably connected to the liner 210, for example by snaps, for easy cleaning and replacement. The removable cover 220 is oriented towards the cooking space, that is, when the cover 200 is in the closed position, the removable cover 220 is directly above the cooking space.

[0105] 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. During cooking, when it is necessary to lock the lid 200 and the pot body 100, the drive component actuates, generating a driving force. This driving force is transmitted to the fastener 300 through the transmission frame 400, causing the fastener 300 to move towards the center of the pot body 100. When the fastener 300 moves to the appropriate position, it securely locks the lid 200 and the pot body 100 together. Optionally, when the fastener 300 is in the locked position, it can engage with the edge 111 of the inner pot 110. When it is necessary to open the lid 200, the drive unit drives the transmission frame 400 to move in the opposite direction, causing the fastener 300 to move away from the center of the pot body 100. When the fastener 300 moves to the appropriate position, it disengages from the pot body 100, allowing the lid 200 to open, and the fastener 300 is in the unlocked position.

[0106] like Figures 1 to 2 As shown, the transmission frame 400 and the driving member are disposed above the cover 210. The fastening member 300 is disposed below the cover 210. The fastening member 300 is connected to the transmission frame 400 via a connector 340. Optionally, the connector 340 is constructed as a columnar structure. The connector 340 is slidably connected to the transmission frame 400. In some embodiments, the transmission frame 400 rotates to move the connector 340, and the connector 340 may deflect.

[0107] like Figures 3 to 10 , Figures 13 to 14 As shown, the cover 210 has a connecting groove 2103 extending along its thickness direction. The extending direction of the connecting groove 2103 is the same as the moving direction of the fastener 300. The connector 340 extends from below the cover 210 to above the cover 210 via the connecting groove 2103, so that the fastener 300 is suspended on the cover 210 and moves along the connecting groove 2103 under the drive of the transmission frame 400. The suspended connection method greatly simplifies the assembly structure between the fastener 300 and the cover 210. While achieving a movable connection, the connector 340 can also serve as a transmission structure to transmit the driving force of the drive component to the fastener 300.

[0108] like Figures 11 to 12As 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. The fastening member 300 forms a structure similar to a "C" shape, so as to be able to form a certain clamping space. 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 stability of the connection, and ensures good sealing performance during pressure cooking. Optionally, the upper fastening portion 310 is connected to the lining cover 210, and the lower fastening portion 330 can be selectively connected to or disengaged from the inner pot 110 to switch between the locked position and the unlocked position.

[0109] In this solution, the upper fastening portion 310 and the lower fastening portion 330 are the force-bearing components when being locked, and the distance between the upper fastening portion 310 and the lower fastening portion 330 needs to meet the requirements. Generally, the distance between the upper fastening portion 310 and the lower fastening portion 330 needs to match the distance between the inner pot 110 and the lining cover 210. If the distance between the upper fastening portion 310 and the lower fastening portion 330 is much larger than the distance between the inner pot 110 and the lining cover 210, a good sealing effect cannot be guaranteed.

[0110] In this solution, the fastening member 300 moves along the radial direction of the cover body 200. The radial direction of the cover body 200 is the direction from the center of the cover body 200 to the periphery. Optionally, the upper fastening portion 310 of the fastening member 300 extends along the radial direction of the cover body 200. The fastening member 300 itself has a certain length and moves along the radial direction, and will cover a large space range during its movement. In the present utility model, a limiting structure for the fastening member 300 is added to make the fastening member 300 move along a preset track. Since the fastening member 300 has a large movement range, interference may occur if there is a slight deflection during its movement. Therefore, the limiting structure needs to avoid interfering with the movement of the fastening member 300 while meeting the limiting requirements.

[0111] The following introduces the limiting structure for the radial inner end of the fastening member 300 through specific embodiments.

[0112] In some embodiments of this invention, the cover 210 has a mounting groove 2101 with a bottom wall. The upper engaging portion 310 of the fastening member 300 extends into the mounting groove 2101. The moving direction of the fastening member 300 is the same as the extending direction of the mounting groove 2101, ensuring that the fastening member 300 moves along the correct trajectory. During the movement of the fastening member 300, at least a portion of the upper engaging portion 310 is always located above the bottom wall of the mounting groove 2101. In this design, the mounting groove 2101 not only accommodates the end of the upper engaging portion 310 but also supports the fastening member 300 and guides its movement.

[0113] As can be seen from the foregoing, the distance between the upper fastening part 310 and the lower fastening part 330 needs to meet the requirements.

[0114] In the above scheme, the fastener 300 is inserted into the mounting groove 2101, or during the movement of the fastener 300, the fastener 300 may interfere with the bottom wall of the mounting groove 2101. To ensure that the fastener 300 does not deviate from the preset trajectory during movement, specifically, to ensure that the fastener 300 does not jam during movement, the fastener 300 is provided with a step.

[0115] Specifically, the upper engaging portion 310 includes a body portion 311 and a stepped portion. The stepped portion is located at the end of the body portion 311 near the mounting groove 2101, and is higher than the body portion 311. During the movement of the engaging member 300, at least a portion of the stepped portion is always located above the bottom wall of the mounting groove 2101. When the distance between the body portion 311 and the lower engaging portion 330 is constant, the stepped portion can increase the opening size of the engaging member 300. The opening size of the engaging member 300 is the distance between the upper engaging portion 310 and the lower engaging portion 330. The presence of the stepped portion effectively prevents interference and potential damage to the engaging member 300 during movement caused by the small distance between the body portion 311 and the lower engaging portion 330. The step portion is higher than the body portion 311. This means that as the fastener 300 moves towards the center of the cover 200, if the step portion contacts the bottom wall of the mounting groove 2101 first, then as the fastener 300 continues to move, it guides the body portion 311 to contact the bottom wall of the mounting groove 2101. The presence of the step portion also reduces friction and wear between the fastener 300 and the mounting groove 2101. Since the length of the mounting groove 2101 is fixed, the fastener 300 located within the mounting groove 2101 includes the body portion 311 and the step portion. When the body portion 311 contacts the bottom wall of the mounting groove 2101, the step portion is spaced apart from the bottom wall of the mounting groove 2101. Therefore, friction and wear are reduced by decreasing the contact area.

[0116] Based on the above embodiments, during the process of the fastener 300 moving toward the center of the cover 200, when the part of the fastener 300 that cooperates with the mounting groove 2101 changes from the stepped part to the body part 311, the end of the fastener 300 is lifted to a certain extent, thereby enhancing the locking effect of the fastener 300.

[0117] In some embodiments of this utility model, the stepped portion includes a first step 3121 and a second step 3122. The first step 3121 is connected to the body portion 311. The second step 3122 is connected to the side of the first step 3121 away from the body portion 311. Both the first step 3121 and the second step 3122 are higher than the body portion 311, with the first step 3121 being higher than the second step 3122. In this design, when the body portion 311 contacts the bottom wall of the mounting groove 2101, the first step 3121 is suspended. Simultaneously, the arrangement of the first step 3121 further reduces the overlapping area along the height direction between the body portion 311, the second step 3122, and the bottom wall of the mounting groove 2101.

[0118] Based on the above embodiment, the height difference d5 between the lower surface of the first step 3121 and the lower surface of the main body 311 is 0.5-5mm. Optionally, the height difference d5 can be, but is not limited to, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, etc., and is preferably 2mm. By setting a reasonable height difference, it can be ensured that the main body 311 is more easily installed into the mounting groove 2101, resulting in a smaller overall height of the cover, while ensuring the strength of the upper fastening part 310.

[0119] Based on the above embodiment, a first transition portion 3131 is provided at the connection between the stepped portion and the main body portion 311. The first transition portion 3131 has an arc-shaped structure. Specifically, the first transition portion 3131 is provided at the connection between the first step 3121 and the main body portion 311. The first step 3121 is located at the radial inner end of the main body portion 311. At the same time, the first step 3121 is higher than the main body portion 311. Therefore, the lower surface of the first transition portion 3131 faces the center of the cover 200, and the lower surface of the first transition portion 3131 serves as a guide surface for the transition from the stepped portion to the main body portion 311.

[0120] Based on the above embodiment, a second transition portion 3132 is provided at the connection between the first step 3121 and the second step 3122. The second transition portion 3132 has an arc-shaped structure. The second step 3122 is located at the radial inner end of the first step 3121, and the second step 3122 is higher than the first step 3121. Therefore, the upper surface of the second transition portion 3132 faces the center of the cover 200, and the upper surface of the second transition portion 3132 serves as a guide surface for the transition from the second step 3122 to the first step 3121.

[0121] In the above embodiments, the arc-shaped structure, as a continuous and smooth transition form, can effectively disperse the stress borne by the step connection. Simultaneously, it avoids the connection between the step and the main body from colliding with the bottom wall of the mounting groove during the reciprocating movement of the fastener due to right angles or acute angles, which would cause significant impact force or resistance, making the fastener prone to deflection. The arc-shaped structure guides the fastener to move more smoothly on the bottom wall of the mounting groove. Optionally, the first transition portion 3131 and the second transition portion 3132 are formed by stamping. The upper and lower surfaces of the first transition portion 3131 have the same radius of curvature. Optionally, the radius of curvature of the first transition portion 3131 is 0.2-5mm. Optionally, the radius of curvature of the first transition portion 3131 can be, but is not limited to, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, etc., preferably 2mm. Similarly, the upper and lower surfaces of the second transition portion 3132 have the same radius of curvature. Optionally, the radius of the R-angle of the second transition portion 3132 is 0.2-5mm. Optionally, the radius of the R-angle of the second transition portion 3132 may be, but is not limited to, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, etc., and is preferably 2mm.

[0122] In some embodiments of this invention, the mounting groove 2101 has two sidewalls spaced apart along its extending direction, the sidewalls of the two mounting grooves 2101 being located on both sides of the width direction of the fastener 300. The two sidewalls of the mounting groove 2101 constitute a limit for the movement of the fastener 300. This ensures that the fastener 300 moves along a predetermined trajectory within the mounting groove 2101, preventing deviation.

[0123] The sidewall and bottom wall of the mounting groove 2101 define a mounting opening 21011, through which the fastener 300 extends into the mounting groove 2101. This structure of the mounting groove 2101 allows the fastener 300 to be directly positioned from the mounting opening 21011 and installed into the mounting groove 2101, simplifying the installation process and enabling rapid positioning and installation of the fastener 300 into the mounting groove 2101.

[0124] In some embodiments of this utility model, the mounting groove 2101 also has a top wall, and the distance between the top wall and the bottom wall of the mounting groove 2101 is greater than the distance between the top wall of the stepped portion and the bottom wall of the main body portion 311. The larger distance between the top wall and the bottom wall of the mounting groove 2101 ensures that the fastener 300 has sufficient space to move and adjust during installation to achieve precise fit and positioning.

[0125] At least a portion of the top wall of the mounting groove 2101 is open. This opening facilitates demolding of the cover during integral molding. Optionally, a reinforcing rib may be provided above the opening to provide stronger restraint on the upper snap-fit ​​portion, preventing it from lifting and crushing the top of the mounting groove during movement. Optionally, the reinforcing rib protrudes from the upper surface of the cover 210. In some embodiments, the reinforcing rib is made of a high-strength material. Optionally, the material of the reinforcing rib includes, but is not limited to, iron.

[0126] In some embodiments of this utility model, the bottom wall of the mounting groove 2101 is constructed as an inclined surface that slopes from high to low from the center of the cover 200 toward the edge of the cover 200. The inclined surface can abut against the rear part of the fastener 300 on the side away from the center of the cover, so that the fastener 300 is in a horizontal state, or when the fastener is pressed, its radial inner end is slightly inclined upward, reducing the possibility of the fastener 300 tilting and moving in the unlocking direction and thus disengaging.

[0127] Based on the above embodiments, the inclination angle of the inclined surface is 0.3-5°. Optionally, the inclination angle of the inclined surface can be, but is not limited to, 0.3°, 0.5°, 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 5°, etc., preferably 3°. The inclination angle needs to take into account the overall structural stability of the mounting groove 2101 and the fastener 300. An excessively large inclination angle may reduce the load-bearing capacity of the mounting groove 2101, while an excessively small inclination angle may not provide sufficient support for the fastener 300. An inclination angle of 0.3-5° can ensure that the mounting groove 2101 remains stable when bearing a load, preventing the fastener 300 from falling off or shifting.

[0128] As described above, during the movement of the fastening member 300, at least a portion of the upper fastening part 310 is always located above the bottom wall of the mounting groove 2101. Specifically, when the fastening member 300 is in the unlocked position, the length by which the fastening member 300 overlaps with the mounting groove 2101 in the radial direction is d1. When the fastening member 300 is in the locked position, the length by which the fastening member 300 overlaps with the mounting groove 2101 in the radial direction is d2. d1 is less than d2, and the range of d1 is 1-15mm. Optionally, d1 can be, but is not limited to, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 5mm, 7mm, 11mm, 13mm, 15mm, etc., and is preferably 8mm. A larger d2 value ensures the stability of the fastener 300 in the locked position, while a smaller d1 value optimizes space utilization and prevents the fastener 300 from dislodging from the mounting slot 2101 during movement, thus improving the stability of the connection between the fastener 300 and the cover 210.

[0129] In some embodiments of this utility model, the corner of the end of the upper engaging portion 310 facing the mounting groove 2101 is set as a rounded corner or a chamfer. The rounded corner or chamfer setting can ensure smooth cooperation between the engaging portion and the mounting groove 2101, reduce interference, and thus improve the stability and reliability of the product's fit.

[0130] The following specific embodiments illustrate the limiting structure for the radial outer end of the fastener 300.

[0131] In some embodiments of this utility model, the cover 210 has a limiting groove 2102 on the side facing the pot body 100. The extending direction of the limiting groove 2102 is the same as the moving direction of the fastening member 300, ensuring that the fastening member 300 can move along the correct trajectory during movement. Furthermore, during the movement of the fastening member 300, at least a portion of the fastening member 300 is always located within the limiting groove 2102. In this solution, the setting of the limiting groove 2102 not only ensures that the fastening member 300 maintains the predetermined trajectory during movement, but also prevents the fastening member 300 from deflecting, ensuring that the fastening member 300 always maintains its correct position and posture, thereby ensuring the accuracy of the fastening member 300 in the locking position and improving the locking precision and reliability of the entire locking assembly. The limiting groove 2102 is connected to the mounting groove 2101, and the limiting groove 2102 and the mounting groove 2101 are spaced apart along the radial direction of the cover body 200. The interconnected limiting groove 2102 and mounting groove 2101 provide a continuous and smooth movement path for the fastening component 300. This ensures the correct path and posture of the fastening component 300 during movement, enabling it to complete the locking and unlocking process more smoothly.

[0132] When the fastener 300 needs to be installed, it is installed into the limiting groove 2102 and the mounting groove 2101. The fastener 300 can slide radially within the limiting groove 2102 and the mounting groove 2101. The interconnected limiting groove 2102 and the mounting groove 2101 simplify the installation and movement process of the fastener 300. The limiting groove 2102 and the mounting groove 2101 provide stable support and guidance for the fastener 300, reducing the risk of shaking and detachment during installation and movement.

[0133] Based on the above embodiment, the limiting groove 2102 has a top wall, and the upper engaging portion 310 is spaced apart from the limiting groove 2102 along the height direction of the cover 200. If the upper engaging portion 310 moves tightly against the top wall of the limiting groove 2102, excessive interference and wear may occur due to friction. By maintaining a certain interval, this friction can be reduced, extending the service life of the fastener 300 and the limiting groove 2102. During the movement of the fastener 300, at least a portion of the upper engaging portion 310 is always located below the top wall of the limiting groove 2102, preventing the fastener 300 from dislodging from the limiting groove 2102 during movement, while ensuring that the fastener 300 maintains the correct posture during movement.

[0134] The limiting groove 2102 has two sidewalls spaced apart along the circumferential direction of the cover 200, and the sidewalls of the two limiting grooves 2102 are located on both sides of the width direction of the fastener 300. The two sidewalls of the limiting groove 2102 constitute a limit during the movement of the fastener 300. This ensures that the fastener 300 moves along a predetermined trajectory within the limiting groove 2102, preventing deviation.

[0135] When the fastener 300 is in the unlocked position, the length by which the fastener 300 overlaps with the side wall of the limiting groove 2102 in the radial direction is d3. When the fastener 300 is in the locked position, the length by which the fastener 300 overlaps with the side wall of the limiting groove 2102 in the radial direction is d4. d3 is greater than d4, and d4 ranges from 1 to 15 mm. Optionally, d4 can be, but is not limited to, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 5 mm, 7 mm, 11 mm, 13 mm, 15 mm, etc., preferably 8 mm. The larger d3 value ensures that when the fastener 300 is in the unlocked position, the fastener 300 can be moved as far away from the center of the lid 200 as possible, that is, the fastener 300 can be moved as far away from the edge 111 of the inner pot 110 as possible. The smaller d4 value ensures that when the fastener 300 is in the locked position, it can be as close as possible to the center of the lid 200, that is, the fastener 300 can be fastened to the edge 111 of the inner pot 110 to the maximum extent, thereby ensuring the stability of the fastener 300.

[0136] As described above, the fastener 300 is connected to the connecting groove 2103 via the connector 340, allowing the fastener 300 to hang on the cover 210. Optionally, the connecting groove 2103 is located within the limiting groove 2102. The fastener 300 is movably connected to the limiting groove 2102 between the unlocked and locked positions. Placing the connecting groove 2103 within the limiting groove 2102 effectively utilizes space, making the overall structure more compact.

[0137] In some embodiments of this utility model, the connector 340 is placed radially inside the center of gravity of the fastening member 300.

[0138] In some embodiments of this utility model, the center line of the connector 340 is collinear with the center of gravity of the fastener 300.

[0139] Through the above embodiments, when the fastening member 300 is not in contact with the edge 111 of the inner pot 110, the fastening member 300 is likely to remain horizontal, or the radially outer end of the fastening member 300 may be slightly tilted downwards. During the locking process, if the radially outer side of the fastening member 300 is flipped upwards, the fastening member 300 may easily abut and jam against the removable cover 220. During the locking process, the lower fastening part 330 can move relatively easily below the edge 111 of the inner pot 110, avoiding interference and jamming, thereby ensuring stable locking of the lower fastening part 330.

[0140] In some embodiments of this utility model, the distance between the centerline of the connector 340 and the center of gravity of the fastening member 300 in the radial direction is 0-6mm. Optionally, d1 can be, but is not limited to, 0mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, etc., preferably 3mm. This ensures the stability of the fastening member 300 after installation. Within this distance range, the lower fastening part 330 can stably move below the edge 111 of the pot liner 110 during the fastening process, thereby improving the reliability and stability of the fastening.

[0141] 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.

[0142] 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, wherein a pot inner liner is provided inside the pot body; A lid, which is closable and disposed on the pot body, the lid comprising: A liner having a mounting groove having a bottom wall; and A fastening element, movably connected to the liner, the fastening element including an upper fastening portion adapted to engage with the liner body and a lower fastening portion adapted to engage with the inner pot, the upper fastening portion extending into the mounting groove, the fastening element moving in the same direction as the extension direction of the mounting groove, the upper fastening portion including: Body part; The stepped portion is located at the end of the body portion near the mounting groove. The stepped portion is higher than the body portion. During the movement of the fastener, at least a portion of the stepped portion is always located above the bottom wall of the mounting groove.

2. The cooking utensil according to claim 1, characterized in that, The stepped portion includes: A first step, the first step being connected to the main body; A second step, the second step being connected to the side of the first step away from the body portion; wherein... Both the first step and the second step are higher than the main body, and the first step is higher than the second step.

3. The cooking utensil according to claim 2, characterized in that, The height difference between the lower surface of the first step and the lower surface of the main body is 0.5-5mm.

4. The cooking utensil according to claim 1, characterized in that, A first transition section is provided at the connection between the stepped portion and the main body portion, and the first transition section is an arc-shaped structure.

5. The cooking utensil according to claim 2, characterized in that, A second transition section is provided at the connection between the first step and the second step, and the second transition section is an arc-shaped structure.

6. The cooking utensil according to any one of claims 1 to 5, characterized in that, The mounting groove has two sidewalls spaced apart along its extension direction, and the two sidewalls of the mounting groove are located on both sides of the width direction of the fastener; The sidewall and bottom wall of the mounting groove define an installation opening, and the fastener extends into the mounting groove through the installation opening.

7. The cooking utensil according to claim 6, characterized in that, The mounting groove also has a top wall, and the distance between the top wall of the mounting groove and the bottom wall of the mounting groove is greater than the distance between the top wall of the step portion and the bottom wall of the body portion. At least a portion of the top wall of the mounting groove is open.

8. The cooking utensil according to any one of claims 1 to 5, characterized in that, The bottom wall of the mounting groove is constructed as a sloping surface that slopes from high to low from the center of the cover toward the edge of the cover.

9. The cooking utensil according to claim 8, characterized in that, The inclination of the inclined surface is 0.3-5°.

10. The cooking utensil according to any one of claims 1 to 5, characterized in that, The fastening element is movably connected to the mounting slot between the unlocked position and the locked position; wherein, When the fastener is in the unlocked position, the length by which the fastener overlaps with the mounting groove in the radial direction is d1; when the fastener is in the locked position, the length by which the fastener overlaps with the mounting groove in the radial direction is d2, d1 is less than d2, and the range of d1 is 1-15mm.

11. The cooking utensil according to any one of claims 1 to 5, characterized in that, The corner of the upper fastening part facing the mounting groove is rounded or chamfered.

12. The cooking utensil according to claim 1, characterized in that, The liner has a limiting groove on one side facing the pot body. The extending direction of the limiting groove is the same as the moving direction of the fastener. During the movement of the fastener, at least a portion of the fastener is always located in the limiting groove. The limiting groove is connected to the mounting groove, and the limiting groove and the mounting groove are spaced apart along the radial direction of the cover.

13. The cooking utensil according to claim 12, characterized in that, The limiting groove has a top wall, the upper fastening part is spaced apart from the limiting groove along the height direction of the cover, and during the movement of the fastening part, at least a portion of the upper fastening part is always located below the top wall of the limiting groove.

14. The cooking utensil according to claim 12, characterized in that, The limiting groove has two side walls spaced apart along the circumferential direction of the cover, and the side walls of the two limiting grooves are located on both sides of the width direction of the fastener. The fastening element is movably connected to the limiting groove between the unlocked position and the locked position; wherein, When the fastener is in the unlocked position, the length by which the fastener overlaps with the side wall of the limiting groove in the radial direction is d3; when the fastener is in the locked position, the length by which the fastener overlaps with the side wall of the limiting groove in the radial direction is d4, where d3 is greater than d4 and d4 is in the range of 1-15mm.

15. The cooking utensil according to claim 1, characterized in that, The cover is provided with a connecting groove, the extending direction of the connecting groove is the same as the moving direction of the fastener, the fastener is connected to a connector, and the connector is connected to the connecting groove.

16. The cooking utensil according to claim 15, characterized in that, The liner has a limiting groove on one side facing the pot body. The extending direction of the limiting groove is the same as the moving direction of the fastener. During the movement of the fastener, at least a portion of the fastener is always located in the limiting groove. The limiting groove is connected to the mounting groove, and the limiting groove and the mounting groove are spaced apart along the radial direction of the cover. The connecting groove is located inside the limiting groove.

17. The cooking utensil according to claim 15, characterized in that, The connector is located radially inside the center of gravity of the fastener, or the centerline of the connector is collinear with the center of gravity of the fastener; and / or The distance between the centerline of the connector and the center of gravity of the fastener in the radial direction is less than or equal to 6 mm.

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