A pot cover of a pressure cooking appliance and a pressure cooking appliance

Abstract

The utility model discloses a kind of pot cover of pressure cooking utensil and pressure cooking utensil, it is related to kitchen household electrical appliances field, pot cover includes cover body and the multiple lid teeth of integrally formed with cover body, multiple lid teeth are along the circumferential direction interval arrangement of cover body, lid tooth includes transverse pressure-bearing surface and the vertical stress part formed along the inside edge vertical downward extension of pressure-bearing surface, vertical stress part is connected cover body in the two side edges of cover body circumferential direction direction.The pot cover of the utility model, in the case where lid tooth material size is not increased, the strength of lid tooth is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a pressure cooking appliance lid and a pressure cooking appliance. Background Technology

[0002] Pressure cookers seal the steam generated when cooking liquids boil inside, increasing the internal pressure to raise the boiling point of the liquid and accelerate cooking. This is because they need to seal the constantly increasing steam.

[0003] Currently, the most common fitting methods for pot lids and pot bodies are screw-on and clamp-on. The screw-on type uses a lid with teeth on the lid and a pot with teeth on the pot body. These teeth engage when the pot body and lid rotate relative to each other, generating a force that pushes the pot body upwards and the lid downwards. This increases the pressure on the seal between the lid and pot body, improving sealing performance. During cooking, as the internal pressure of the pressure cooker increases, the relative force on the teeth also increases. The relatively thick teeth prevent deformation after fitting, ensuring good sealing of the pressure cooker.

[0004] Because the lid teeth are usually molded as one piece with the pot lid, the pot lid needs to be made with a large thickness to form a strong lid teeth, which makes the pot lid too thick and heavy. Utility Model Content

[0005] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a lid for a pressure cooking appliance that enhances the strength of the lid teeth without increasing the size of the lid tooth material.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pressure cooking appliance lid includes a lid body and a plurality of lid teeth integrally formed with the lid body. The plurality of lid teeth are spaced apart circumferentially along the lid body. Each lid tooth includes a transverse pressure-bearing surface and a vertical force-bearing portion extending vertically downward along the inner edge of the pressure-bearing surface. The vertical force-bearing portion is connected to the lid body on two sides in the circumferential direction of the lid body.

[0008] This utility model discloses a lid suitable for a screw-on pressure cooker, which can screw onto the pot body of the pressure cooker. The pot body has a "pot tooth" (or "pot teeth"). When the lid is screwed onto the pot body, the pot tooth is positioned above the lid tooth, and the two are vertically abutted to lock the pot body and lid together. Since the pot body holds food and needs to be sealed, the pot tooth is located on the outer side of the pot body, while the lid tooth is located on the inner side wall of the lid. The lid has multiple lid teeth, which ensures a good circumferential locking effect, preventing partial lifting and leakage. Furthermore, the multiple lid teeth can also distribute the reaction force from the pot body acting on the lid, as well as the force generated during the increase of internal pressure in the pressure cooker.

[0009] The cap tooth comprises a pressure-bearing surface and a vertical force-bearing section. The pressure-bearing surface directly contacts the cap tooth and bears the applied force. After being subjected to force, the pressure-bearing surface transmits the force downward to the vertical force-bearing section directly connected to it. The side of the vertical force-bearing section is also connected to the cap body. After being subjected to force, the force is distributed across the entire vertical force-bearing section and at the connection point between the vertical force-bearing section and the cap body. The cap tooth, integrally molded with the cap body, ensures a tighter fit between the cap tooth and the cap body, facilitating the transmission of force.

[0010] The forces distributed throughout the vertical load-bearing section are directed downwards. Because the vertical load-bearing section extends vertically downwards from the edge of the bearing surface, its orientation aligns with the direction of the forces. Therefore, the transmission of forces in the vertical load-bearing section is more direct, reducing the generation of internal forces (such as torque). The stress on the vertical load-bearing section is simpler, preventing deformation due to "superimposed stress" exceeding the bearing limit and avoiding deformation of the bearing surface after being stressed. Another portion of the force acts between the vertical load-bearing section and the cover body, generating shear force in this area. The vertically extending load-bearing section also has a relatively long side, allowing the area between it and the cover body to withstand significant shear force. Since the cover tooth and cover body are integrally formed, the connection strength between them is high, and the cover body can generate restraining force to resist shear force. Furthermore, the forces can also be transmitted to the cover body through the vertical load-bearing section, thus sharing some of the force. In summary, the strength of the cover tooth is greatly enhanced by the action of the vertical load-bearing section. Therefore, it can reduce the amount of material used in the lid, lower costs and weight, while ensuring that the lid teeth have sufficient strength to meet the requirements of the lid and pot body. Depending on the actual usage, the compressive strength of the lid teeth can also be adjusted by setting the length of the vertical load-bearing section.

[0011] It should be noted that: In general, pressure cooking appliances are placed with the pot body on the countertop and the lid above the pot body. The horizontal direction mentioned above refers to the horizontal direction or near the horizontal direction, the vertical direction refers to the height direction, and the inward direction refers to the direction towards the center of the lid. The inner edge of the pressure-bearing surface is the side of the pressure-bearing surface facing the center of the lid.

[0012] Optionally, the cap tooth further includes a transverse connecting portion connecting the cap body and the vertical force-bearing part. Providing a transverse connecting portion allows some of the force to act on the transverse connecting portion, reducing the force acting on the vertical force-bearing part and the connection between the vertical force-bearing part and the cap body. Since the transverse connecting portion is connected to both the cap body and the vertical force-bearing part, its compressive strength is significantly improved. The transverse connecting portion can also transfer some of the force to the cap body, further enhancing the strength of the cap tooth.

[0013] Optionally, the transverse connecting part connects the upper end of the lid and the vertical force-bearing part, and the upper end surface of the transverse connecting part forms the pressure-bearing surface. During the screwing of the lid and the pot body, the transverse connecting part directly contacts the pot teeth, so that the force is first applied to the transverse connecting part, and then transmitted from the transverse connecting part to its connection with the lid, its connection with the vertical force-bearing part, the vertical force-bearing part, and the connection between the vertical force-bearing part and the lid. Since the transverse connecting part can also bear part of the force, the force transmitted from the pressure-bearing surface to the vertical force-bearing part can be reduced.

[0014] Optionally, the transverse connecting part connects the lower end of the lid and the vertical force-bearing part, and the upper end surface of the vertical force-bearing part forms the pressure-bearing surface. During the screwing process of the lid and the pot body, the vertical force-bearing part directly contacts the pot teeth, so that the force is directly applied to the vertical force-bearing part, and then transmitted from the vertical force-bearing part to its connection with the transverse connecting part, its connection with the lid, the transverse connecting part, and the connection between the transverse connecting part and the lid. The transverse connecting part is connected to the lid and the vertical force-bearing part respectively, which greatly reduces the force at the connection between the vertical force-bearing part and the lid.

[0015] Optionally, the transverse connecting portion includes a first connecting portion and a second connecting portion. The first connecting portion connects the upper end of the lid and the vertical force-bearing portion, and the upper end surface of the first connecting portion forms the pressure-bearing surface. The second connecting portion connects the lower end of the lid and the vertical force-bearing portion. During the screwing process between the lid and the pot body, the first connecting portion directly contacts the pot teeth, so that the force is first applied to the first connecting portion and then transmitted from the first connecting portion to the vertical force-bearing portion and the second connecting portion. This reduces the force transmitted from the pressure-bearing surface to the vertical force-bearing portion. Since both the first and second connecting portions are connected to the lid and the vertical force-bearing portion, their compressive strength is enhanced, enabling them to bear more force and significantly reducing the stress at the connection between the vertical force-bearing portion and the lid.

[0016] Optionally, the vertical force-bearing part and the lid body form a vertically continuous channel, and the upper end surface of the vertical force-bearing part forms the pressure-bearing surface. During the screwing process of the lid and the pot body, the vertical force-bearing part directly contacts the pot teeth, so that the force is directly applied to the vertical force-bearing part, and then transmitted from the vertical force-bearing part to its connection with the lid body. Except for the side connecting with the lid body, the other parts of the vertical force-bearing part are kept at a distance from the lid body, making the processing of the lid teeth simpler.

[0017] Optionally, the cap tooth includes a plurality of pressure-bearing surfaces spaced apart circumferentially along the cap body, and the inner edge of each pressure-bearing surface extends vertically to form the vertical force-bearing part. Multiple pressure-bearing surfaces mean that each cap tooth includes multiple vertical force-bearing parts, allowing the force to be distributed. The more vertical force-bearing parts there are, the greater the strength of the entire cap tooth, enabling it to withstand stronger pressure, or further reducing the amount of material used in the cap body.

[0018] Optionally, the cap tooth further includes at least one vertically extending force-bearing edge, which connects the vertical force-bearing portion and the cap body. The vertical force-bearing edge, connected between the cap body and the vertical force-bearing portion, can transfer part of the force from the vertical force-bearing portion to the cap body via the vertical force-bearing edge. Furthermore, the vertical force-bearing edge itself possesses the same excellent compressive strength as the vertical force-bearing portion, further enhancing the strength of the cap tooth.

[0019] Optionally, the cap tooth is formed by a transverse inward protrusion from the side wall of the cap body. This type of cap tooth is formed by stamping, that is, a stamping die is used to apply pressure to the side wall of the cap body, causing the pressure-bearing part to deform and extend inward. The wall thickness of the formed cap tooth is less than the thickness of the side wall of the cap body, but because the cap tooth has a vertical force-bearing part, even if the thickness of the cap tooth is reduced during the forming process, it still has good compressive strength.

[0020] A pressure cooking appliance includes a pot body and a lid. The lid is the lid of the pressure cooking appliance disclosed above. The pot body has a serrated edge, and the lid rotates relative to the pot body to engage the serrated edge with the lid teeth, thereby locking the pot body and the lid. The pressure cooking appliance uses the lid disclosed in the above solution and possesses all the beneficial effects of the lid described above, which will not be elaborated further here.

[0021] Optionally, the pot teeth and the lid teeth engage via an inclined plane, causing them to initially stagger vertically and then overlap during the biting process. During rotation, the pot teeth and lid teeth initially overlap vertically, maintaining a gap due to the inclined plane. As the lid continues to rotate, the overlapping area increases, gradually bringing them into contact and locking them together to secure the lid and pot body. This inclined plane engagement method facilitates easy biting and reduces the likelihood of misalignment.

[0022] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is an exploded view of the pressure cooking appliance of this utility model.

[0025] Figure 2 This is a cross-sectional view of a pot lid according to the present invention.

[0026] Figure 3 This is a cross-sectional view of another type of pot lid according to this utility model.

[0027] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0028] Figure 5 for Figure 3 Enlarged diagram of point C in the middle.

[0029] Figure 6 This is a schematic diagram A of a tooth cover structure in this utility model.

[0030] Figure 7 This is a schematic diagram (B) of a tooth cover structure according to the present invention.

[0031] Figure 8 This is a schematic diagram (C) of a tooth cover structure according to the present invention.

[0032] Figure 9 D is a schematic diagram of the structure of a tooth cover in this utility model.

[0033] Figure 10 This is a schematic diagram of the structure of the pot lid with four pressure-bearing surfaces in this utility model.

[0034] Figure 11 This is a schematic diagram of the structure of the pot lid with two pressure-bearing surfaces according to the present invention.

[0035] Figure 12 This is a schematic diagram of the structure of the pot lid with a pressure-bearing surface on the lid teeth according to this utility model.

[0036] Figure 13 for Figure 1Enlarged diagram of point A in the middle.

[0037] Figure 14 This is a structural schematic diagram of another pressure cooking appliance in this utility model.

[0038] Figure label:

[0039] 100. Lid, 110. Pressure bearing surface, 111. Vertical force-bearing part, 112. Horizontal connecting part, 113. First connecting part, 114. Second connecting part, 115. Vertical force-bearing edge, 116. Lid body, 120. Handle, 130.

[0040] The pot body is 200mm thick, and the pot teeth are 210mm thick. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0042] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0043] Reference Figures 1 to 4 This utility model discloses a pot lid adapted to a pressure cooker. The pot lid 100 covers the pot body 200 of the pressure cooker, and a sealing ring for providing a circumferential seal is provided between the pot lid 100 and the pot body 200, so that the pot lid 100 and the pot body 200 form a sealed cooking cavity after being closed. During the cooking process, steam is continuously generated inside the pressure cooker. Due to the sealing effect of the pressure cooker, the steam cannot be discharged to the outside, causing the air pressure in the cooking cavity to continuously increase, thereby increasing the boiling point of the cooking liquid. Under the dual action of high temperature and high pressure, the food becomes tender and flavorful.

[0044] In this application, the pressure cooking appliance uses a screw-on method for closing the lid. The lid 100 is provided with a lid tooth 110, and the pot body 200 is correspondingly provided with a pot tooth 210. When the lid 100 is screwed onto the pot body 200, the pot tooth 210 is located above the lid tooth 110, and the two are vertically abutting each other. The vertical abutment of the pot tooth 210 and the lid tooth 110 generates a force acting on the pot body 200 and the lid 100 in the vertical direction, which clamps the sealing ring between the pot body 200 and the lid 100 to provide a circumferential seal. During cooking, because the pot body 200 is placed on a platform, the increase in air pressure in the cooking cavity will generate an upward force on the lid 100, increasing the relative force between the pot tooth 210 and the lid tooth 110.

[0045] The pot lid 100 includes a lid body 120, and lid teeth 110 are located on the lid body 120. The number of lid teeth 110 is set to multiple and arranged at intervals along the circumference of the lid body 120. The number of pot teeth 210 is the same as that of lid teeth 110, and the number of both is not less than four. The circumferential dimension of lid teeth 110 is smaller than the distance between two adjacent pot teeth 210. When the pot lid 100 is screwed onto the pot body 200, one lid tooth 110 engages with one pot tooth 210. Since the inside of the pot body 200 needs to hold food and keep it sealed, the pot teeth 210 are located on the outside of the pot body 200, while the lid teeth 110 are located on the inner side wall of the pot lid 100. The pot teeth 210 and lid teeth 110 cooperate outside the pot body 200. In addition, by setting multiple lid teeth 110 and multiple pot teeth 210, the lid 100 and the pot body 200 can be sealed in the circumferential direction, which can prevent local leakage between the two. The multiple lid teeth 110 and multiple pot teeth 210 can also share the force during the lid closing process and the force increased due to the increase in gas pressure during cooking.

[0046] If one of the cap teeth 110 deforms, the pressure on the corresponding sealing ring will decrease, easily leading to steam leakage during cooking. Therefore, it is necessary to ensure that the cap tooth 110 has sufficient strength to prevent deformation due to excessive force during and after the cap tooth 210 is closed. In the existing technology, the cap tooth and the cap body are integrally formed. Generally, the cap body is produced first, and then the edge of the cap body is bent inward to form the cap tooth. When the cap tooth is subjected to force, the force will be transmitted to the bending point between the cap tooth and the cap body. The compressive strength of the cap tooth is basically equal to the bending strength at the bending point between the cap tooth and the cap body, which is directly related to the thickness of the material. Therefore, the cap body has a large thickness, the molding of the cap body uses too much material, and the weight is too large, making it difficult to use.

[0047] In this application, the cover tooth 110 is also integrally formed with the cover body 120. This integral forming method allows for a tighter connection between the cover tooth 110 and the cover body 120, facilitating the transmission of force. The cover tooth 110 includes a transverse bearing surface 111 and a vertical force-bearing portion 112 extending vertically downward along the inner edge of the bearing surface 111. The vertical force-bearing portion 112 connects to the cover body 120 on two sides in the circumferential direction. The transverse bearing surface 111 is used to contact the pot teeth 210 to directly bear the force from the pot teeth 210. The vertical force-bearing part 112 is a long strip and is connected to the bearing surface 111, so that the force borne by the bearing surface 111 can be directly transmitted to the vertical force-bearing part 112. The side of the vertical force-bearing part 112 is also connected to the cover body 120. After the vertical force-bearing part 112 is subjected to force, the force will be distributed on the entire vertical force-bearing part 112 and the part where the vertical force-bearing part 112 is connected to the cover body 120.

[0048] Specifically:

[0049] The cover tooth 110 is connected to the cover body 120. The force can be borne by the cover tooth 110 and the cover body 120 respectively. The force exerted by the pot tooth 210 on the cover tooth 110 is vertically downward. The vertical force-bearing part 112 extends vertically downward from the edge of the bearing surface 111. Its setting direction is consistent with the direction of the force. Therefore, the force is transmitted more directly on the vertical force-bearing part 112, reducing the generation of internal forces (such as torque). The force on the vertical force-bearing part 112 is simpler, avoiding deformation due to "superimposed stress" exceeding the bearing limit, and avoiding deformation of the bearing surface 111 after being subjected to force.

[0050] The two sides of the vertical force-bearing part 112 are connected to the cover 120 and fixed. Therefore, the force is in the form of bending internal force, which causes the vertical force-bearing part 112 to have a deformation tendency with both ends upward and the middle downward. However, because the vertical force-bearing part 112 has a large size in the direction of the force, the vertical force-bearing part 112 has strong bending resistance and avoids deformation.

[0051] Part of the force will be applied at the connection between the vertical force-bearing part 112 and the cover 120. The force here is a shear force. Since the vertical force-bearing part 112 and the cover 120 are integrally formed and the vertical force-bearing part 112 has a large size in the direction of the force, the connection between the vertical force-bearing part 112 and the cover 120 has good shear resistance. In addition, both ends of the vertical force-bearing part 112 are connected to the cover 120. When the vertical force-bearing part 112 is subjected to force, the cover 120 will generate a restraining force on the vertical force-bearing part 112 to resist it.

[0052] In summary, the strength of the lid teeth 110 is greatly enhanced by the vertical force-bearing part 112. Therefore, the material usage of the lid 100 can be reduced, lowering both cost and weight, while ensuring that the lid teeth 110 possess sufficient strength to meet the fitting requirements of the lid 100 and the pot body 200. Depending on the actual usage (e.g., the size of the pot), the length of the vertical force-bearing part 112 can be adjusted, and the compressive strength of the lid teeth 110 can also be modified.

[0053] It should be noted that: pressure cookers are generally positioned with the pot body on the countertop and the lid above the pot body. The horizontal direction mentioned above refers to the horizontal or near-horizontal direction, the vertical direction refers to the height direction, and the inward direction refers to the direction towards the center of the lid.

[0054] In this application, the cap tooth 110 is formed onto the cap body 120 by stamping. The vertical force-bearing part 112 is actually an edge formed by stamping the side wall of the cap body 120. The outer side wall of the cap body 120 has an inwardly recessed portion corresponding to the cap tooth 110, and the cap tooth 110 can also protrude inward to fit with the pot tooth 210. The cap tooth 110, formed by stamping, has a wall thickness smaller than that of the cap body 120. However, due to the optimized structure of the cap tooth 110, its compressive strength can be improved through the vertical force-bearing part 112. Even though the thickness decreases continuously during the forming process, it still has sufficient strength to meet the fitting requirements. Figures 10 to 12 As shown, the outer side of the cover 120 has a groove structure, and the inner side of the cover 120 has a protruding structure. This is a depression formed during the stamping process of the cover 120 to form the cover tooth 110, so that the inner wall of the cover 120 protrudes inward to become the cover tooth 110.

[0055] Reference Figures 5 to 8 Based on the above embodiments, in one embodiment of the present invention, the cover tooth 110 further includes a transverse connecting portion 113 connected between the cover body 120 and the vertical force-bearing portion 112.

[0056] The transverse connecting part 113 can bear part of the force, reducing the force acting on the vertical force-bearing part 112 and the connection between the vertical force-bearing part 112 and the cover 120. The transverse connecting part 113 is connected to the cover 120 and the vertical force-bearing part 112 respectively, which greatly improves the compressive strength of the transverse connecting part 113. The transverse connecting part 113 can also transfer part of the force to the cover 120, further enhancing the strength of the cover tooth 110.

[0057] This embodiment discloses three forms of the transverse connecting portion 113, corresponding to three shapes of the cap tooth 110.

[0058] like Figure 5 and Figure 6As shown, in the first type, the lid teeth 110 are formed by pressing inward from the bottom edge of the lid body 120. The transverse connecting part 113 connects the lid body 120 and the upper end of the vertical force-bearing part 112. The upper end surface of the transverse connecting part 113 forms a pressure-bearing surface 111. The transverse connecting part 113 directly contacts the lid teeth 210 during the screwing of the lid 100 and the pot body 200, so that the force is first applied to the transverse connecting part 113, and then transmitted from the transverse connecting part 113 to its connection with the lid body 120, its connection with the vertical force-bearing part 112, the vertical force-bearing part 112, and the connection between the vertical force-bearing part 112 and the lid body 120. Since the transverse connecting part 113 can also bear part of the force, the force transmitted from the pressure-bearing surface 111 to the vertical force-bearing part 112 can be reduced. Furthermore, the bearing surface 111 formed by the transverse connecting portion 113 has a larger area in the transverse direction, providing a larger contact area with the pot tooth 210. This allows for better dispersion of the force, preventing excessive local force from causing local structural damage to the cap tooth 110 and gradually expanding to the entire cap tooth 110. The transverse connecting portion 113 is an edge formed by the transverse extension of the side wall of the cap body 120 after stamping.

[0059] like Figure 7 As shown, in the second type, the portion above the bottom edge of the cover 120 is punched inward to form a cover tooth 110. The upper end of the vertical force-bearing part 112 is disconnected from the cover 120, and the horizontal connecting part 113 connects the cover 120 and the lower end of the vertical force-bearing part 112. The upper end of the vertical force-bearing part 112 forms a bearing surface 111. When the cover tooth 110 mates with the pot tooth 210, the vertical force-bearing part 112 directly contacts the pot tooth 210, so that the force is directly applied to the vertical force-bearing part 112, and then transmitted from the vertical force-bearing part 112 to its connection with the horizontal connecting part 113, its connection with the cover 120, the horizontal connecting part 113, and the connection between the horizontal connecting part 113 and the cover 120. The horizontal connecting part 113 is connected to the cover 120 and the vertical force-bearing part 112 respectively, which greatly reduces the force at the connection between the vertical force-bearing part 112 and the cover 120.

[0060] like Figure 8As shown, in the third type, the portion above the bottom edge of the cover 120 is punched inward to form a cover tooth 110. The transverse connecting portion 113 includes a first connecting portion 114 and a second connecting portion 115. The first connecting portion 114 connects the cover 120 and the upper end of the vertical force-bearing portion 112, and the upper end surface of the first connecting portion 114 forms a pressure-bearing surface 111. The second connecting portion 115 connects the cover 120 and the lower end of the vertical force-bearing portion 112. During the screwing of the lid 100 and the pot body 200, the first connecting part 114 directly contacts the pot teeth 210, so that the force is first applied to the first connecting part 114, and then transmitted from the first connecting part 114 to the vertical force-bearing part 112 and the second connecting part 115. This reduces the force transmitted from the pressure-bearing surface 111 to the vertical force-bearing part 112. Both the first connecting part 114 and the second connecting part 115 are connected to the lid body 120 and the vertical force-bearing part 112, and their compressive strength is enhanced, so that they can bear more force, which greatly reduces the force at the connection between the vertical force-bearing part 112 and the lid body 120.

[0061] Reference Figure 4 Unlike the above embodiments, in another embodiment of this utility model, the cap tooth 110 is formed by punching inward from the bottom edge of the cap body 120, and the upper end of the vertical force-bearing part 112 is disconnected from the cap body 120, so that the vertical force-bearing part 112 and the cap body 120 form a vertically penetrating channel, and the upper end of the vertical force-bearing part 112 forms a pressure-bearing surface 111. The vertical force-bearing part 112 is in direct contact with the pot tooth 210, so that the force is directly applied to the vertical force-bearing part 112, and then transmitted from the vertical force-bearing part 112 to its connection with the cap body 120.

[0062] This embodiment differs from the above embodiments in that it does not form a transverse connecting part 113 during the stamping process, but forms a cross section between the upper end of the vertical force-bearing part 112 and the cover body 120, reducing the difficulty of material deformation in the cover body 120, making it easier for the vertical force-bearing part 112 to meet the required size requirements, and reducing the forming difficulty of the cover tooth 110.

[0063] like Figure 2 , Figure 3 , Figure 10 , Figure 11As shown, based on the above embodiments, in one embodiment of this utility model, the cap tooth 110 includes a plurality of pressure-bearing surfaces 111 spaced apart circumferentially along the cap body 120, and the inner edge of each pressure-bearing surface 111 extends vertically to form a vertical force-bearing part 112. Each cap tooth 110 can be regarded as an assembly composed of a plurality of smaller, spaced teeth. The cap tooth 110 has stronger compressive strength due to the vertical force-bearing part 112. Through this solution, the number of vertical force-bearing parts 112 of each cap tooth 110 can be increased, and the force can be distributed to each vertical force-bearing part 112, thereby further improving the compressive strength of the entire cap tooth 110 or further reducing the amount of material used in the cap body 120.

[0064] Although the more vertical force-bearing parts 112 on a cap tooth 110, the better, the length of the pot tooth 210 and the cap tooth 110 is limited. It is preferable to set two or three pressure-bearing surfaces 111 on a cap tooth 110. The more parts there are, the more difficult the processing becomes and the lower the yield rate.

[0065] like Figure 9 As shown, unlike the above embodiments, in another embodiment of this utility model, the cover tooth 110 further includes at least one vertically extending force-bearing edge 116, which connects the vertical force-bearing portion 112 and the cover body 120. The vertical force-bearing edge 116, connecting the cover body 120 and the vertical force-bearing portion 112, can transmit part of the force from the vertical force-bearing portion 112 to the cover body 120 via the vertical force-bearing edge 116. Furthermore, the vertical force-bearing edge 116 itself possesses the same excellent compressive strength as the vertical force-bearing portion 112, further enhancing the strength of the cover tooth 110. The more vertical force-bearing edges 116 there are, the stronger the compressive strength of the cover tooth 110.

[0066] The solution disclosed in this embodiment cannot be formed by stamping in the above embodiment, and needs to be processed by casting, welding and other methods.

[0067] Reference Figure 1 , Figure 13 , Figure 14 This utility model embodiment also discloses a pressure cooking appliance, including a pot body 200 and a lid 100. The lid 100 is the lid 100 of the pressure cooking appliance disclosed above. The pot body 200 is provided with pot teeth 210. The lid 100 rotates relative to the pot body 200 so that the pot teeth 210 engage with the lid teeth 110 to lock the pot body 200 and the lid 100. The pressure cooking appliance adopts the lid 100 disclosed in the above solution and has all the beneficial effects of the lid 100, which will not be described in detail here.

[0068] Reference Figure 1 , Figure 13 , Figure 14Based on the above embodiments, in one embodiment of this utility model, the pot tooth 210 and the cover tooth 110 are engaged by inclined surfaces, so that the pot tooth 210 and the cover tooth 110 first stagger and then overlap each other during the biting process.

[0069] To ensure sufficient contact area between the jaw 210 and the overbite 110 after occlusion, both are provided with beveled structures. The beveled structure of the overbite 110 is located on its upper end face, and the beveled structure of the jaw 210 is located on its lower end face. Figure 13 As shown, since the groove structure on the outer wall of the cover 120 corresponds to the cover tooth 110, it can be seen in the figure that the upper end of the groove is inclined, and the pressure-bearing surface 111 of the corresponding cover tooth 110 is an inclined surface; the pot tooth 210 is set at an overall inclination, and its lower end forms an inclined surface.

[0070] During the screwing process, the pot teeth 210 and lid teeth 110 initially overlap vertically. At first, the beveled surfaces maintain a gap between them despite the overlap. As the lid 100 continues to rotate, the overlapping area of ​​the pot teeth 210 and lid teeth 110 increases, gradually bringing them into contact and locking the lid 100 and pot body 200 together. This beveled engagement method facilitates easy mating between the pot teeth 210 and lid teeth 110, reducing wear and misalignment of the lid 100 during rotation. Because the lid 100 and pot body 200 fit together more easily, the handle 130 on the lid 100 can be shortened, or even positioned within the diameter of the lid 100, reducing the size of the pressure cooker, decreasing the outer packaging size, and lowering packaging costs.

[0071] Because the cap tooth 110 is formed by stamping, the entire cap tooth 110 can be set at an angle to form an inclined pressure-bearing surface 111. If the cap tooth 110 includes multiple pressure-bearing surfaces 111, then the multiple pressure-bearing surfaces 111 are all inclined, and the multiple pressure-bearing surfaces 111 are on the same inclined surface, so that the multiple inclined pressure-bearing surfaces 111 can all contact the pot tooth 210.

[0072] The forming method of the pot tooth 210 is generally to cut multiple notches on the pot body 200, turn the part between two notches into an edge, and then form the pot tooth 210 with a bevel by stamping.

[0073] like Figure 13 As shown, the height difference h of the inclined plane is between 1 and 3 mm.

[0074] Of course, the contact surfaces of the overbite and the ferrule do not need to be made entirely of bevels. They can also be a combination of a bevel and a flat surface, so that when they fit together, they can first make contact by overlapping the bevels, and then the flat surface can fit together. This can also reduce the occurrence of malocclusion.

[0075] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A lid for a pressure cooking appliance, comprising a lid body (120) and a plurality of lid teeth (110) integrally formed with the lid body (120), the plurality of lid teeth (110) being spaced apart circumferentially along the lid body (120), characterized in that, The cover tooth (110) includes a transverse pressure-bearing surface (111) and a vertical force-bearing part (112) extending vertically downward along the inner edge of the pressure-bearing surface (111). The vertical force-bearing part (112) is connected to the cover body (120) on two sides in the circumferential direction.

2. The lid of the pressure cooking appliance according to claim 1, characterized in that, The cap tooth (110) also includes a transverse connecting part (113) connecting the cap body (120) and the vertical force-bearing part (112).

3. The lid of the pressure cooking appliance according to claim 2, characterized in that, The transverse connecting part (113) connects the upper end of the cover (120) and the vertical force-bearing part (112), and the upper end surface of the transverse connecting part (113) forms the pressure-bearing surface (111); Alternatively, the transverse connecting part (113) connects the lower end of the cover (120) and the vertical force-bearing part (112), and the upper end surface of the vertical force-bearing part (112) forms the pressure-bearing surface (111).

4. The lid of the pressure cooking appliance according to claim 2, characterized in that, The transverse connecting part (113) includes a first connecting part (114) and a second connecting part (115). The first connecting part (114) connects the upper end of the cover (120) and the vertical force-bearing part (112). The upper end surface of the first connecting part (114) forms the pressure-bearing surface (111). The second connecting part (115) connects the lower end of the cover (120) and the vertical force-bearing part (112).

5. The lid of the pressure cooking appliance according to claim 1, characterized in that, The vertical force-bearing part (112) and the cover (120) form a vertically penetrating channel, and the upper end surface of the vertical force-bearing part (112) forms the pressure-bearing surface (111).

6. The lid of the pressure cooking appliance according to any one of claims 1 to 5, characterized in that, The cap tooth (110) includes a plurality of pressure-bearing surfaces (111) spaced circumferentially along the cap body (120), and the inner edge of each pressure-bearing surface (111) extends vertically to form the vertical force-bearing part (112).

7. The lid of the pressure cooking appliance according to any one of claims 1 to 5, characterized in that, The cap tooth (110) also includes at least one vertically extending vertical force-bearing edge (116), which connects the vertical force-bearing part (112) and the cap body (120).

8. The lid of a pressure cooking appliance according to any one of claims 1 to 5, characterized in that, The cap tooth (110) is formed by the side wall of the cap body (120) protruding laterally inward.

9. A pressure cooking appliance, characterized in that, The appliance includes a pot body (200) and a pot lid (100), wherein the pot lid (100) is the pot lid (100) of any one of claims 1 to 8, the pot body (200) is provided with pot teeth (210), and the pot lid (100) is rotated relative to the pot body (200) to engage the pot teeth (210) with the lid teeth (110) to lock the pot body (200) and the pot lid (100).

10. The pressure cooking appliance according to claim 9, characterized in that, The pot tooth (210) and the cover tooth (110) are engaged by inclined surfaces, so that the pot tooth (210) and the cover tooth (110) first interlock and then overlap each other during the biting process.

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