Cooking appliance

Abstract

This utility model provides a cooking utensil, comprising: a pot body with a plurality of pot teeth spaced apart, one of which is a limiting tooth, the outer surface of which includes a protruding limiting surface; and a lid, which is closable and can be locked onto the pot body, engaging with the limiting tooth. The lid has a stop-opening element; when the lid is locked with the limiting tooth and the cooking utensil is under pressure, the stop-opening element interferes with the protruding limiting surface to lock the lid onto the pot body. The design of this application effectively solves the problem in related technologies where the inclusion of limiting holes and limiting protrusions increases processing steps and leads to higher processing costs.

Description

Technical Field

[0001] This utility model relates to the field of small household appliance technology, and more specifically, to a cooking utensil. Background Technology

[0002] In related technologies, to ensure safe use, a device is generally installed to prevent forced opening of the lid when there is pressure inside the pot of a cooking appliance. This device includes a stop-opening element on the lid and a stop-opening rod that can engage with the stop-opening element. When there is pressure inside the pot, the stop-opening rod rises and engages with the stop-opening rod, preventing the lid from rotating.

[0003] To improve the reliability of the device preventing forced opening of the lid, the related technology provides a limiting hole on the pot body and a limiting protrusion on the lid that can be inserted into the limiting hole. When the limiting protrusion is inserted into the limiting hole, it can effectively ensure that the lid cannot rotate.

[0004] However, the aforementioned limiting holes and limiting protrusions increase the number of processing steps, resulting in higher processing costs. Utility Model Content

[0005] The main purpose of this utility model is to provide a cooking utensil that solves the problem that the setting of limiting holes and limiting protrusions in related technologies increases the processing steps and makes the processing cost higher.

[0006] To achieve the above objectives, this utility model provides a cooking utensil, comprising: a pot body, on which a plurality of pot teeth are spaced apart, one of which is a limiting tooth, the outer surface of which includes an outwardly protruding limiting surface; and a lid, which is closable and can be locked onto the pot body and engage with the limiting tooth, the lid being provided with a stop-opening element. When the lid is locked onto the limiting tooth and the cooking utensil is under pressure, the stop-opening element interferes with the outwardly protruding limiting surface to lock the lid onto the pot body.

[0007] By applying the technical solution of this utility model, when the cooking appliance is in a pressureless state, the contact area and resistance between the convex limiting surface and the stop-opening element on the lid are small, and the interference of the convex limiting surface with the stop-opening element is also small. When the pressure inside the pot increases, putting the cooking appliance in a pressurized state, the contact area and resistance between the convex limiting surface and the stop-opening element on the lid increase, and the interference of the convex limiting surface with the stop-opening element also increases, effectively preventing the lid from being forcibly opened under pressure, thereby improving safety. Furthermore, compared to the limiting holes and limiting protrusions in related technologies, the convex limiting surface design of this application simplifies the processing technology and reduces processing costs. Therefore, the technical solution of this application effectively solves the problem that the setting of limiting holes and limiting protrusions in related technologies increases processing steps and results in higher processing costs.

[0008] Furthermore, the convex limiting surface includes an extended surface that can abut against the stop-opening member. This extended surface extends obliquely downwards in the direction from the outside to the inside of the pot body. This obliquely downward-designed extended surface increases the contact area between the stop-opening member and the extended surface when the pressure inside the pot increases, creating greater resistance and effectively preventing the lid from being accidentally opened, thus enhancing safety performance.

[0009] Furthermore, the convex limiting surface includes an outer extension surface that can abut against the stop member and an inner extension surface that connects to the edge of the outer extension surface. The inner extension surface extends obliquely downwards in the direction from the outside to the inside of the pot body. The inner extension surface ensures smooth opening and closing of the lid by rotation. Furthermore, when the pot body is under pressure, the stop member slides smoothly along the inner extension surface to the outer extension surface, allowing the outer extension surface to significantly interfere with the stop member. This ensures the lid will not open accidentally or due to improper operation, improving the reliability of preventing forced opening.

[0010] Furthermore, the inner extension surface is located below the outer extension surface. The position design of the inner extension surface makes the locking engagement between the stop and the limiting tooth smoother in the unpressurized state, while in the pressurized state, it facilitates the sliding of the stop from the position abutting against the inner extension surface to the position interfering with the outer extension surface, thereby enhancing the stability and security of the cover locking.

[0011] Furthermore, the outer surface of the limiting tooth also includes an arc-shaped guide surface. Along the edge of the guide surface, a convex limiting surface connects to one side of the guide surface. A line along the circumference of the guide surface, passing through its edge and outer extension surface, is designated as the first reference line. A line along the circumference of the guide surface, passing through its edge and inner extension surface, is designated as the second reference line. An acute angle is formed between the first and second reference lines. This acute angle design ensures that, under pressure, the interference direction when the stop-opening element abuts against the outer extension surface is more perpendicular to the opening direction of the cover. This ensures that even with increased force, the cover is not easily opened, further improving safety.

[0012] Furthermore, the acute angle is greater than or equal to 2° and less than or equal to 10°. By limiting the range of the acute angle, a large amount of interference is maintained between the stop and the convex limiting surface under pressure. This effectively prevents forced opening of the cover without causing significant wear to the surface of the convex limiting surface due to forced opening, thus ensuring safety and service life.

[0013] Furthermore, the tangent line passing through the edge of the guide surface is set as the third reference line. A first angle is formed between the first reference line and the third reference line, and a second angle is formed between the second reference line and the third reference line. The second angle is greater than the first angle. In this way, in the circumferential direction, the above arrangement makes the inner extension surface smoother and the outer extension surface steeper, which facilitates greater interference between the outer extension surface and the stop member.

[0014] Furthermore, for ease of manufacturing and processing, the outer surface and the guide surface are integrally stretched and formed into a single surface structure.

[0015] Furthermore, the interference amount when the stop element is in interference fit with the outer surface is greater than the interference amount when the stop element is in interference fit with the inner surface. Thus, the stopping effect produced by the interference fit between the stop element and the outer surface is greater than the stopping effect produced by the interference fit between the stop element and the inner surface.

[0016] Furthermore, the outer surface of the limiting tooth also includes a transition surface located above the convex limiting surface, which guides and engages with the stop-opening element. The design of the transition surface allows the stop-opening element to move smoothly along the transition surface when there is no pressure or when it is unlocked, reducing operating resistance and improving the ease of opening the cover and the user experience. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A cross-sectional schematic diagram of the pot body of an embodiment of the cooking appliance according to the present invention is shown when it is in a pressureless state;

[0019] Figure 2 It shows Figure 1 An enlarged view of point A on the cooking appliance;

[0020] Figure 3 It shows Figure 1 A cross-sectional view of the cooking utensils along the BB direction;

[0021] Figure 4 It shows Figure 3 An enlarged view of point C of the cooking utensil;

[0022] Figure 5 A cross-sectional schematic diagram of the pot body under pressure according to an embodiment of the cooking appliance of the present invention is shown.

[0023] Figure 6 It shows Figure 5 An enlarged view of point D of the cooking appliance;

[0024] Figure 7 It shows Figure 5 A cross-sectional view of the cooking appliance along the EE direction;

[0025] Figure 8 It shows Figure 7 An enlarged view of point F of the cooking appliance;

[0026] Figure 9 It shows Figure 5 A three-dimensional structural diagram of the pot body of a cooking utensil;

[0027] Figure 10 It shows Figure 9 An enlarged schematic diagram of the cooking appliance at point G;

[0028] Figure 11 It shows Figure 9 A partial top view of the pot body, showing the acute angle included;

[0029] Figure 12 It shows Figure 9 A partial top view of the pot body, showing the first included angle and the second included angle;

[0030] Figure 13 It shows Figure 5 A three-dimensional structural diagram of the lid, stop mechanism, and stop rod of a cooking utensil.

[0031] The above figures include the following reference numerals:

[0032] 10. Pot body; 11. Shell; 12. Insulation cover; 13. Pot teeth; 14. Limiting teeth; 141. Outer convex limiting surface; 142. Outer extension surface; 143. Inner extension surface; 144. Guide surface; 145. Transition surface;

[0033] 20. Cover; 21. Outer cover; 22. Inner cover; 23. Elastic element;

[0034] 30. Stop-start component; 31. Stop-start plate; 32. Stop-start hole; 33. Stop-start head;

[0035] 40. Stop lever;

[0036] L1, First reference line; L2, Second reference line; L3, Second reference line; a, Acute angle; b, First angle; c, Second angle. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] This application provides a cooking utensil, such as Figures 1 to 8 and Figure 13 As shown, an embodiment of the cooking appliance includes a pot body 10 and a lid 20. The pot body 10 has a plurality of pot teeth 13 spaced apart. One of the pot teeth 13 is a limiting tooth 14, and the outer surface of the limiting tooth 14 includes a protruding limiting surface 141. The lid 20 is closable on the pot body 10 and can be locked in place with the limiting tooth 14. The lid 20 is provided with a stop-opening member 30. When the lid 20 is locked in place with the limiting tooth 14 and the cooking appliance is under pressure, the stop-opening member 30 interferes with the protruding limiting surface 141 to lock the lid 20 onto the pot body 10.

[0041] By applying the technical solution of this embodiment, when the cooking appliance is in a pressureless state, the contact area and resistance between the convex limiting surface 141 and the stop-opening member 30 on the lid 20 are small, and the interference of the convex limiting surface 141 on the stop-opening member 30 is also small. When the pressure inside the pot 10 increases, causing the cooking appliance to be in a pressurized state, the contact area and resistance between the convex limiting surface 141 and the stop-opening member 30 on the lid 20 increase, and the interference of the convex limiting surface 141 on the stop-opening member 30 also increases, effectively preventing the lid 20 from being forcibly opened under pressure, thereby improving safety. Furthermore, compared to the limiting holes and limiting protrusions provided in related technologies, the design of the convex limiting surface 141 in this application simplifies the processing technology and reduces processing costs. Therefore, the technical solution of this embodiment effectively solves the problem that the setting of limiting holes and limiting protrusions in related technologies increases processing steps and results in higher processing costs. It should be noted that, in the direction from the inside to the outside of the pot body 10, a portion of the outer surface of the limiting tooth 14 protrudes beyond the rest of the outer surface of the limiting tooth 14. Furthermore, during the process of switching the cooking appliance from a pressureless state to a pressured state, a portion of the outer surface of the limiting tooth 14 is inclined upwards along the trajectory of the cooking appliance switching from a pressureless state to a pressured state; thus, a portion of the outer surface of the limiting tooth 14 is an outwardly convex limiting surface 141.

[0042] It should be noted that when the outer surface of the limiting tooth 14 is formed in the pot body 10, the convex limiting surface 141 is formed along with the outer surface of the limiting tooth 14 and is part of the outer surface of the limiting tooth 14.

[0043] like Figure 6 and Figures 9 to 11 As shown, the convex limiting surface 141 includes an extended surface 142 capable of abutting against the stop member 30. The extended surface 142 extends obliquely downwards in the direction from the outside to the inside of the pot body 10. This obliquely downward design of the extended surface 142 increases the contact area between the stop member 30 and the extended surface 142 when the pressure inside the pot body 10 increases, creating greater resistance and effectively preventing the lid 20 from being accidentally opened, thus enhancing safety. The extended surface 142 is preferably curved.

[0044] like Figure 6 and Figures 9 to 11As shown, the convex limiting surface 141 includes an outer extension surface 142 that can abut against the stop member 30 and an inner extension surface 143 connected to the edge of the outer extension surface 142. The inner extension surface 143 extends obliquely downwards in the direction from the outside to the inside of the pot body 10. The inner extension surface 143 ensures smooth opening and closing of the lid 20. Furthermore, when the pot body is under pressure, the stop member 30 slides smoothly along the inner extension surface 143 to the outer extension surface, allowing the outer extension surface 142 to exert greater interference with the stop member 30. This ensures that the lid 20 will not open accidentally or due to improper operation, improving the reliability of preventing forced opening. The inner extension surface 143 is preferably curved.

[0045] like Figure 6 and Figures 9 to 11 As shown, the inner extension surface 143 is located below the outer extension surface 142. The position design of the inner extension surface 143 makes the locking engagement between the stop-opening member 30 and the limiting tooth 14 smoother in the unpressurized state, while in the pressurized state, it is convenient for the stop-opening member 30 to slide from the position abutting against the inner extension surface 143 to the position interfering with the outer extension surface 142, thereby enhancing the stability and security of the locking of the cover 20.

[0046] Specifically, the inner extension surface 143 is inclined or close to the vertical centerline of the pot body relative to the outer extension surface 142. The outer extension surface 142 is located in the middle, with a smaller angle between the upper circumferential line of the outer extension surface and the third reference line, and a larger angle between the lower circumferential line of the outer extension surface and the third reference line. The outer extension surface is a non-vertical surface that connects the two inconsistent circumferential lines on its upper and lower sides.

[0047] like Figure 6 and Figures 9 to 11 As shown, the outer surface of the limiting tooth 14 also includes an arc-shaped guide surface 144. Along the edge of the guide surface 144, a convex limiting surface 141 is connected to one side of the guide surface 144. A line along the circumference of the guide surface 144, passing through its edge and the outer extension surface 142, is designated as the first reference line L1. A line along the circumference of the guide surface 144, passing through its edge and the inner extension surface 143, is designated as the second reference line L2. An acute angle α is formed between the first reference line L1 and the second reference line L2. The design of the acute angle α ensures that, under pressure, the interference direction when the stop-opening member 30 abuts against the outer extension surface 142 is more perpendicular to the opening direction of the cover 20, ensuring that even with increased force, the cover 20 is not easily opened, further improving safety.

[0048] like Figure 6 and Figures 9 to 11As shown, the acute angle α is greater than or equal to 2° and less than or equal to 10°. By limiting the range of the acute angle α, a large amount of interference is maintained between the stop member 30 and the convex limiting surface 141 under pressure. This effectively prevents forced opening of the cover without causing significant wear to the surface of the convex limiting surface 141 due to forced opening, thus ensuring safety and service life. The acute angle α is preferably 2°, 5°, 8°, or 10°.

[0049] like Figures 6 to 10 and Figure 12 As shown, the tangent line passing through the edge of the guide surface 144 is designated as the third reference line L3. A first angle b is formed between the first reference line L1 and the third reference line L3, and a second angle c is formed between the second reference line L2 and the third reference line L3. The second angle c is greater than the first angle b. Thus, in the circumferential direction, this arrangement makes the inner extension surface 143 smoother and the outer extension surface 142 steeper, facilitating greater interference between the outer extension surface 142 and the stop-opening member 30. When the internal pressure of the pot body 10 increases, the stop-opening member 30 generates greater resistance when it contacts the outer extension surface 142 in the convex limiting surface 141. This increased resistance is due to the contact angle between the stop-opening member 30 and the outer extension surface 142 being more perpendicular to the opening direction of the lid 20, effectively preventing abnormal opening of the lid 20 under pressure.

[0050] like Figure 6 and Figures 10 to 12 As shown, for ease of manufacturing and processing, the outer surface 142 and the guide surface 144 are integrally stretched and formed as a single surface structure. This design method not only simplifies the manufacturing process, reduces assembly steps, and lowers production costs, but also enhances the strength and stability of the integral structure.

[0051] like Figure 6 and Figures 10 to 12 As shown, the interference amount when the stop-opening element 30 interferes with the outer extension surface 142 is greater than the interference amount when the stop-opening element 30 interferes with the inner extension surface 143. Thus, the stopping effect produced by the interference of the stop-opening element 30 with the outer extension surface 142 is greater than that produced by the interference of the stop-opening element 30 with the inner extension surface 143. Under pressure, the contact between the stop-opening element 30 and the outer extension surface 142 is tighter, meaning that the stop-opening element 30 needs to overcome greater resistance when attempting to rotate. This design ensures that even under pressure, the cover 20 cannot be easily opened, effectively avoiding safety issues caused by forcibly opening the cover due to incomplete pressure release.

[0052] like Figure 6 and Figures 9 to 11As shown, the outer surface of the limiting tooth 14 also includes a transition surface 145 located above the convex limiting surface 141, and the transition surface 145 is guided and engaged with the stop-opening member 30. The design of the transition surface 145 allows the stop-opening member 30 to move smoothly along the transition surface 145 when there is no pressure or when it is unlocked, reducing operating resistance and improving the ease of opening the cover 20 and the user experience.

[0053] like Figures 1 to 6 As shown, the cover 20 includes an outer cover 21 and an inner cover 22 disposed inside the outer cover 21. The stop-opening member 30 includes a stop-opening plate 31 movably disposed on the inner cover 22 and a stop-opening head 33 disposed on the first end of the stop-opening plate 31. The stop-opening head 33 interferes with the outwardly protruding limiting surface 141. The inner cover 22 can lock with the pot teeth 13. The second end of the stop-opening plate 31 is provided with a stop-opening hole 32 through which a stop-opening rod 40 of a cooking utensil can pass. When the stop-opening rod 40 is inserted into the stop-opening hole 32, it restricts the lateral movement of the stop-opening plate 31 relative to the stop-opening rod 40. The cooperative design of the stop-opening plate 31 and the stop-opening rod 40 ensures that the stop-opening member 30 can be reliably locked under pressure, preventing the lateral movement of the cover 20, thereby avoiding the risk of the cover 20 being abnormally opened under pressure and enhancing safety.

[0054] It should be noted that when the pressure inside the pot body 10 increases to put the cooking appliance under pressure, or when the inner lid 22 floats up, the inner lid 22 will move upward a certain distance relative to the pot body 10.

[0055] Specifically, the inner lid 22 is provided with lid teeth that can lock into the pot teeth 13. When the pot body 10 is in a depressurized state, the stop rod 40 is not inserted into the stop hole 32, and the stop part 30 can open or close the lid along with the lid body 20 without interfering with the opening or closing process of the lid body 20. When the cooking appliance is under pressure, the stop rod 40 is inserted into the stop hole 32, and the stop head 33 interferes with the outward convex limiting surface 141. The stop part 30 prevents the lid body 20 from opening, thus preventing the pot body 10 of the cooking appliance from being forcibly opened under pressure, thereby improving safety. The inner lid 22 is provided with a through hole for the stop head 32 to pass through.

[0056] like Figures 1 to 6 As shown, to facilitate a reliable interference fit between the stop-opening member 30 and the outwardly protruding limiting surface 141, the cover 20 also includes an elastic member 23 disposed between the outer cover 21 and the first end of the stop-opening plate 31. The elastic member 23 applies an elastic force in the direction of the stop-opening member 30. Furthermore, the use of the elastic member 23 ensures that the stop-opening plate 31 can automatically reset, simplifying the operation process. The elastic member 23 is preferably a spring.

[0057] like Figures 1 to 8As shown, the pot body 10 includes a shell 11 and a heat insulation cover 12 disposed within the shell 11, with multiple pot teeth 13 disposed on the heat insulation cover 12. The pot teeth 13 are disposed on the heat insulation cover 12 to facilitate the machining of the pot teeth 13. At the same time, the limiting tooth 14 is part of the heat insulation cover 12, and its position design ensures that the stop member 30 and the convex limiting surface 141 of the heat insulation cover 12 can effectively cooperate under pressure.

[0058] It should be noted that in this application, "multiple" means two or more.

[0059] The cooking appliance in this application is a pressure cooker, but it can also be a rice cooker, slow cooker, frying machine, food processor, or other appliances with other functions.

[0060] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0063] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooking appliance characterized by, include: The pot body (10) is provided with a plurality of pot teeth (13) spaced apart. One of the pot teeth (13) is a limiting tooth (14). The outer surface of the limiting tooth (14) includes an outwardly convex limiting surface (141). The lid (20) is closable and can be installed on the pot body (10) and locked with the limiting tooth (14). The lid (20) is provided with a stop-opening member (30). When the lid (20) is locked with the limiting tooth (14) and the cooking utensil is under pressure, the stop-opening member (30) interferes with the convex limiting surface (141) to lock the lid (20) on the pot body (10).

2. The cooking appliance of claim 1, wherein, The convex limiting surface (141) includes an extension surface (142) that can abut against the stop member (30). The extension surface (142) extends obliquely downward in the direction from the outside of the pot body (10) to the inside of the pot body (10).

3. The cooking appliance of claim 1, wherein, The convex limiting surface (141) includes an outer extension surface (142) that can abut against the stop member (30) and an inner extension surface (143) that connects to the edge of the outer extension surface (142). In the direction from the outside of the pot body (10) to the inside of the pot body (10), the inner extension surface (143) extends in a downward direction.

4. The cooking appliance of claim 3, wherein, The inner extension surface (143) is located below the outer extension surface (142).

5. The cooking appliance according to claim 3 or 4, characterized in that, The outer surface of the limiting tooth (14) also includes an arc-shaped guide surface (144). Along the edge of the guide surface (144), the convex limiting surface (141) is connected to one side of the guide surface (144). A line passing through the edge of the guide surface (144) and the outer extension surface (142) along the circumference of the guide surface (144) is defined as the first reference line (L1). A line passing through the edge of the guide surface (144) and the inner extension surface (143) along the circumference of the guide surface (144) is defined as the second reference line (L2). An acute angle (a) is formed between the first reference line (L1) and the second reference line (L2).

6. The cooking appliance of claim 5, wherein, The acute angle (a) is greater than or equal to 2° and less than or equal to 10°.

7. The cooking appliance of claim 5, wherein, The tangent line passing through the edge of the guide surface (144) is set as the third reference line (L3). The first reference line (L1) and the third reference line (L3) form a first angle (b), and the second reference line (L2) and the third reference line (L3) form a second angle (c). The second angle (c) is greater than the first angle (b).

8. The cooking appliance of claim 5, wherein, The extension surface (142) and the guide surface (144) are integral surface structures formed by stretching.

9. The cooking appliance of claim 3 or 4, wherein, The interference amount when the stop-opening member (30) and the outer extension surface (142) are in interference engagement is greater than the interference amount when the stop-opening member (30) and the inner extension surface (143) are in interference engagement.

10. The cooking appliance according to any one of claims 1 to 4, characterized in that, The outer surface of the limiting tooth (14) also includes a transition surface (145) located above the convex limiting surface (141), and the transition surface (145) is guided and engaged with the stop member (30).

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