Pot cover assembly and pressure cooking utensil

Abstract

The pot cover assembly comprises a lining cover and an inner cover located below the lining cover, the inner cover is matched with a pot body to form a cooking cavity, the lining cover is provided with a plurality of pressure-bearing protrusions protruding towards the inner cover in the circumferential direction of the inner cover, and the inner cover can abut against the pressure-bearing protrusions to transmit acting force to the pressure-bearing protrusions. Reinforcing ribs are arranged on the side, away from the inner cover, of the lining cover and are adjacent to the pressure-bearing protrusions or vertically correspond to the pressure-bearing protrusions. When the inner part of the pot is pressed upwards, the inner cover is in contact with the plurality of pressure-bearing bulges, so that the stress points of the lining cover are concentrated at the pressure-bearing bulges. In this way, the position where the inner cover exerts acting force on the lining cover is easier to determine, structural enhancement design can be conveniently carried out on the area, the structural design difficulty is reduced, and meanwhile cost is reduced. The reinforcing ribs can improve the structural strength of the pressure-bearing protrusions in a targeted mode, and then the structural strength of the pressure-bearing protrusions is greatly improved through the dual functions of the pressure-bearing protrusions and the reinforcing ribs.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a pot cover assembly and a pressure cooking appliance. Background Art

[0002] Pressure cooking appliances typically consist of a pot and a lid. The lid consists of an inner lid and a lining located above the inner lid. When the lid is closed over the pot, the inner lid and the pot body form a cooking chamber. During pressure cooking, because the pressure inside the cooking chamber is higher than the external atmospheric pressure, the gas inside the pot exerts an upward force on the inner lid, which in turn exerts an upward force on the lining. The inner lid, as a component that directly contacts the high-pressure environment and the high-temperature steam inside the pot, is typically made of metal. To save costs, the lining is often made of plastic, which has a lower structural strength. Therefore, the greater pushing force from the inner lid poses a risk of deformation or damage to the lining.

[0003] In the prior art, the upper end face of the inner cover is usually brought into contact with the lower end face of the lining cover, and the two are in contact through a plane with a relatively large area. The lining cover of this structure has poor deformation resistance, and its stability in a high-pressure environment remains to be verified. At the same time, the contact area between the inner cover and the lining cover is extremely large, making it difficult to determine the concentrated stress area of ​​the lining cover, and thus difficult to troubleshoot any problems. It is also difficult to analyze the stress conditions of the lining cover, and thus it is impossible to carry out targeted design of the stress-bearing surface of the lining cover to achieve the purpose of improving the structural strength of the lining cover. If the entire end face of the lining cover is structurally reinforced, it will not only lead to waste of materials and increase production costs, but will also greatly increase the thickness and weight of the lining cover, seriously increasing the weight of the pot lid, which is not in line with the development trend of miniaturization and lightweighting. Utility Model Content

[0004] The utility model provides a pot cover assembly and a pressure cooking appliance to solve the problems that the inner cover and the lining cover are in contact through a large-area plane, resulting in poor deformation resistance of the lining cover, and the area where the force exerted by the inner cover on the lining cover is concentrated is difficult to determine, making it difficult to carry out targeted local structural reinforcement of the lining cover.

[0005] The technical solution adopted by this utility model is:

[0006] A pot cover assembly includes a lining cover and an inner cover located below the lining cover. The inner cover cooperates with the pot body to form a cooking cavity. The lining cover is provided with a plurality of pressure-bearing protrusions protruding toward the inner cover along the circumference of the inner cover. The inner cover can abut against the pressure-bearing protrusions to transmit force to the pressure-bearing protrusions. A reinforcing rib is provided on the side of the lining cover facing away from the inner cover. The reinforcing rib is adjacent to the pressure-bearing protrusions or arranged correspondingly above and below.

[0007] The pot cover assembly of the present invention also has the following additional technical features:

[0008] The reinforcing rib includes a first rib position and a second rib position perpendicular to the first rib position. The second rib position is multiple and is arranged at intervals along the length direction of the first rib position. The first rib position and the second rib position are connected.

[0009] A pressure-bearing plane for contacting the inner cover is provided on one side of the pressure-bearing protrusion facing the inner cover.

[0010] The inner cover comprises a body and a fixed skirt surrounding the outer periphery of the body. The fixed skirt protrudes relative to the body toward the lining cover, and the pressure-bearing protrusion abuts against the fixed skirt.

[0011] The pot cover assembly also includes a reinforcement member, which is fixed to the side of the lining cover away from the inner cover. The reinforcement member is provided with a bending portion, which corresponds to the pressure-bearing protrusion up and down, and the bending portion is provided with a reinforcement protrusion.

[0012] A fixing position is provided on the side of the lining cover facing away from the inner cover. The pot cover assembly also includes a fastener, and the reinforcement is fixed to the fixing position by the fastener. The fixing position is arranged adjacent to the pressure-bearing protrusion.

[0013] The reinforcement includes a support plate and a protrusion that bulges upward relative to the support plate. The support plate contacts the upper surface of the lining cover. There is an accommodating space between the protrusion and the upper surface of the lining cover. The reinforcing rib is accommodated in the accommodating space. The bent portion is located between the support plate and the protrusion.

[0014] The lining cover has a front area and a rear area, the rear area is provided with a connecting arm for rotationally connecting with the pot body, the front area is provided with a snap portion for locking with the pot body, and the reinforcing ribs extend from the front area to the rear area.

[0015] The pot cover assembly also includes a reinforcing piece fixed to the side of the lining cover away from the inner cover. The reinforcing piece has a matching arm located in the rear area. The matching arm is provided with an installation opening for the rotating shaft to pass through.

[0016] The utility model also discloses a pressure cooking device, comprising a pot body and an inner pot placed in the pot body, and also comprising the above-mentioned pot cover assembly, wherein the inner cover covers the inner pot so that the inner cover and the inner pot cooperate to form a cooking cavity.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0018] 1. In the present invention, the lining cover is provided with a plurality of pressure-bearing protrusions, which are arranged at intervals along the circumference of the inner cover. When pressure is applied to the pot, the inner cover contacts the plurality of pressure-bearing protrusions and transmits the force to the lining cover through the pressure-bearing protrusions, so that the force points of the lining cover are concentrated on the pressure-bearing protrusions. In the structural strength analysis and structural reinforcement design, only targeted improvements need to be made to the pressure-bearing protrusions, without the need to structurally strengthen the lining cover as a whole. This makes it easier to determine the position where the inner cover applies force to the lining cover, and facilitates the structural reinforcement design of this area, which reduces the difficulty of structural design while also reducing costs. At the same time, the protrusion structure itself has a high structural strength, making it less likely that the pressure-bearing protrusion will deform when subjected to force.

[0019] In addition, reinforcing ribs are provided on the side of the lining cover facing away from the inner cover. The reinforcing ribs are adjacent to the pressure-bearing protrusion or pass through the pressure-bearing protrusion, so that the reinforcing ribs can specifically improve the structural strength of the pressure-bearing protrusion. The structural strength of the pressure-bearing protrusion is greatly improved through the dual effects of the pressure-bearing protrusion and the reinforcing ribs on the pressure-bearing protrusion. During the pressure cooking process, the pressure-bearing protrusion can more stably and reliably resist the force of the inner cover, greatly reducing the risk of deformation or damage of the lining cover at the pressure-bearing protrusion.

[0020] 2. As a preferred embodiment of the present invention, the inner lid includes a main body and a fixed skirt surrounding the outer periphery of the main body, the fixed skirt protruding relative to the main body toward the lining cover, and the pressure-bearing protrusion abuts the fixed skirt. By the upwardly protruding fixed skirt abutting and cooperating with the pressure-bearing protrusion, on the one hand, the fixed skirt protrudes upward relative to the main body, so that after the fixed skirt abuts the pressure-bearing protrusion, a gap still exists between the main body and the lining cover, and the two do not contact each other, thereby ensuring that the inner lid and the lining cover abut only at the pressure-bearing protrusion, and the force is transmitted through the pressure-bearing protrusion. On the other hand, the main body is a large-area plate-like structure with low structural strength, while the fixed skirt protrudes upward, so its structural strength is greater than that of the main body. The abutment of the fixed skirt with the pressure-bearing protrusion makes the abutment between the two more stable and the force transmission more reliable. At the same time, it also makes the inner lid less likely to deform when squeezed, which helps to ensure the posture stability of the inner lid after pressure is applied, thereby maintaining a reliable seal between the pot lid and the pot body, ensuring normal pressure cooking.

[0021] 3. As a preferred embodiment of the present invention, the pot cover assembly also includes a reinforcement member, which is fixed to the side of the lining cover facing away from the inner cover. The reinforcement member is provided with a bent portion, which corresponds to the pressure-bearing protrusion in upper and lower directions, and the bent portion is provided with a reinforcement protrusion. The reinforcement member is fixed to the upper side of the lining cover, and when the inner cover pushes the lining cover upward, it forms a downward support for the lining cover, which can further enhance the structural strength of the lining cover. The bending structure makes the reinforcement member itself have a greater structural strength at the bent portion, so making the bent portion correspond to the pressure-bearing protrusion in upper and lower directions can further enhance the structural strength of the pressure-bearing protrusion and reduce the possibility of deformation of the pressure-bearing protrusion. The provision of the reinforcement protrusion also further increases the strength of the bent portion, making it more difficult for the bent portion to deform when subjected to force, thereby providing stable support for the pressure-bearing protrusion.

[0022] 4. As a preferred embodiment of the present invention, the lining cover has a front area and a rear area, the rear area is provided with a connecting arm for rotationally connecting to the pot body, the front area is provided with a snap portion for locking with the pot body, and the reinforcing ribs extend from the front area to the rear area. The connecting arm of the rear area of ​​the lining cover is used for rotationally connecting to the pot body, and the snap portion of the front area is used for locking with the pot body. When the air pressure in the pot rises, the gas in the pot pushes the pot cover to produce an upward movement trend, and since the snap portion of the front area is locked with the pot body and the connecting arm of the rear area is connected to the pot body, the front and rear of the lining cover are restricted, so the front and rear areas are also very easy to be deformed or damaged, and have high requirements for structural strength. In this embodiment, the reinforcing ribs extend from the front area to the rear area, passing through the pressure-bearing protrusions. Therefore, the reinforcing ribs can not only play a structural reinforcement role on the pressure-bearing protrusions, but also play a structural reinforcement role on the snap-fit ​​portion of the front area of ​​the lining cover and the connecting arm of the rear area, thereby improving the strength of each stress-bearing position of the lining cover as a whole, making the reinforcing ribs have multiple uses without the need to set up other additional reinforcing structures, simplifying the structure of the lining cover and saving costs.

[0023] 5. As a preferred embodiment of the present invention, the pot cover assembly further comprises a reinforcement member fixed to the side of the lining cover facing away from the inner cover, the reinforcement member having a mating arm located in the rear region, the mating arm having an installation opening for the rotating shaft to pass through. The reinforcement member not only provides downward support for the lining cover, enabling the lining cover to withstand greater forces from the inner cover, but also cooperates with the rotating shaft. On the one hand, it plays a positioning role in the installation of the rotating shaft, reducing the difficulty of assembly. On the other hand, the mating wall can also provide support for the rotating shaft. When the rotating shaft is subjected to force, rotation can squeeze the mating wall, thereby transmitting the force to the reinforcement member, allowing the reinforcement member to bear part of the force from the rotating shaft, thereby dispersing the force on the rotating shaft and improving the structural strength and stability of the connection between the rear end of the lining cover and the pot body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 This is a bottom view of a liner cover according to one embodiment of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the middle lining cover;

[0027] Figure 3 This is a schematic structural diagram of a reinforcement member according to one embodiment of the present invention;

[0028] Figure 4 for Figure 3 Magnified view of area A in the middle;

[0029] Figure 5 This is a cross-sectional view of a pot cover according to one embodiment of the present invention;

[0030] Figure 6 for Figure 5 Magnified view of area B in the middle;

[0031] Figure 7 This is a cross-sectional view of the inner cover according to one embodiment of the present invention;

[0032] Figure 8 This is a partial cross-sectional view of a pot cover assembly according to one embodiment of the present invention;

[0033] Figure 9 for Figure 8 Magnified view of area C in center.

[0034] in:

[0035] 1 lining cover; 11 front area; 111 buckle portion; 12 rear area; 121 connecting arm; 13 pressure-bearing protrusion; 131 pressure-bearing plane; 14 reinforcing rib; 141 first rib position; 142 second rib position; 15 fixing position;

[0036] 2 inner cover; 21 fixed skirt; 22 body;

[0037] 3 reinforcement member; 31 support plate; 32 protruding portion; 33 bent portion; 34 matching arm; 341 mounting opening; 35 reinforcement protrusion. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "embodiment", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] like Figure 1 、 Figure 2 As shown, a pot cover assembly includes a lining cover 1 and an inner cover 2 located below the lining cover 1. The inner cover 2 cooperates with the pot body to form a cooking cavity. The lining cover 1 is provided with multiple pressure-bearing protrusions 13 along the circumference of the inner cover 2. The pressure-bearing protrusions 13 protrude toward the inner cover 2. The inner cover 2 can abut against the pressure-bearing protrusions 13 to transmit force to the pressure-bearing protrusions 13. A reinforcing rib 14 is provided on the side of the lining cover 1 facing away from the inner cover 2. The reinforcing rib 14 is adjacent to the pressure-bearing protrusion 13 or is arranged correspondingly up and down.

[0044] In the present invention, the lining cover 1 is provided with a plurality of pressure-bearing protrusions 13, which are arranged at intervals along the circumference of the inner cover 2, and a pressure-bearing protrusion 13 is provided that protrudes toward the inner cover 2, so that when pressure is applied to the pot, the inner cover 2 contacts the plurality of pressure-bearing protrusions 13 and transmits the force to the lining cover 1 through the pressure-bearing protrusions 13, so that the force points of the lining cover 1 are concentrated at the pressure-bearing protrusions 13. In the structural strength analysis and structural reinforcement design, only targeted improvements need to be made to the pressure-bearing protrusions 13, without the need to structurally reinforce the lining cover 1 as a whole. This makes it easier to determine the position where the inner cover 2 applies the force to the lining cover 1, and facilitates the structural reinforcement design of this area, reducing the difficulty of structural design while also reducing costs. At the same time, the raised structure itself has a high structural strength, making it less likely that the pressure-bearing protrusion 13 will deform when subjected to force.

[0045] In addition, a reinforcing rib 14 is provided on the side of the lining cover 1 facing away from the inner cover 2. The reinforcing rib 14 is adjacent to the pressure-bearing protrusion 13 or passes through the pressure-bearing protrusion 13, so that the reinforcing rib 14 can specifically improve the structural strength of the pressure-bearing protrusion 13, and then through the dual effects of the pressure-bearing protrusion 13 and the reinforcing rib 14 on the pressure-bearing protrusion 13, the structural strength of the pressure-bearing protrusion 13 is greatly improved. Then, during the pressure cooking process, the pressure-bearing protrusion 13 can more stably and reliably resist the force of the inner cover 2, greatly reducing the risk of deformation or damage of the lining cover 1 at the pressure-bearing protrusion 13.

[0046] Preferably, there are multiple pressure-bearing protrusions 13 that are evenly spaced along the circumference of the inner cover 2 to form a uniform supporting force on the circumference of the inner cover 2 to prevent the inner cover 2 from tilting during the floating process. Figure 1 As shown, in one embodiment, there are four pressure-bearing protrusions 13, two of which are located in the front region 11 of the lining cover 1, and the other two are located in the rear region 12 of the lining cover 1. Of course, the number and arrangement of the pressure-bearing protrusions 13 can also be in other forms, which are not limited here.

[0047] Preferably, if Figure 8 、 Figure 9 As shown, the vertical surface of the reinforcing rib 14 is adjacent to the pressure-bearing protrusion 13 . Of course, the reinforcing rib 14 can also pass through the pressure-bearing protrusion 13 so that the projection of the pressure-bearing protrusion 13 toward the lining cover 1 covers the vertical surface of the reinforcing rib 14 .

[0048] As a preferred embodiment of the present invention, Figure 2 As shown, the reinforcing rib 14 includes a first rib position 141 and a second rib position 142 perpendicular to the first rib position 141. There are multiple second rib positions 142 and they are spaced apart along the length direction of the first rib position 141. The first rib position 141 and the second rib position 142 are connected.

[0049] The first rib 141 extends along the upper surface of the liner 1 in a long strip structure, passing through more pressure-bearing protrusions 13. This allows a single first rib 141 to simultaneously cover multiple pressure-bearing protrusions 13, eliminating the need for separate reinforcing ribs 14 on each pressure-bearing protrusion 13. This simplifies the structure of the liner 1 and reduces manufacturing complexity. Multiple second ribs 142 are spaced apart along the length of the first rib 141, perpendicular to the first rib 141. Because the long strip-shaped first rib 141 has relatively low structural strength, the multiple second ribs 142 reinforce various areas of the first rib 141, giving the reinforcing rib 14 a higher overall structural strength and providing reliable support for the pressure-bearing protrusions 13.

[0050] Specifically, the lower side of the first rib 141 is fixedly connected to the upper surface of the lining cover 1, and the lower side of the second rib 142 is fixedly connected to the upper surface of the lining cover 1, and one side thereof is fixedly connected to the first rib 141. Preferably, the first rib 141, the second rib 142, and the lining cover 1 are integrally formed by injection molding. Of course, the first rib 141 and the second rib 142 can also be fixed to the lining cover 1 by screws, welding, or other methods, which are not limited here.

[0051] Preferably, if Figure 5 、 Figure 6 As shown, a pressure-bearing plane 131 for contacting the inner cover 2 is provided on the side of the pressure-bearing protrusion 13 facing the inner cover 2 .

[0052] The pressure-bearing protrusion 13 contacts the inner cover 2 via the pressure-bearing surface 131. This, on the one hand, appropriately increases the contact area between the two, making the contact more stable and improving support stability. On the other hand, it also disperses the force applied by the inner cover 2 to the pressure-bearing protrusion 13 across the pressure-bearing surface 131, thereby evenly applying the force to the pressure-bearing surface 131 and preventing damage to the pressure-bearing protrusion 13 caused by excessive force in some areas.

[0053] As a preferred embodiment of the present invention, Figure 7 As shown, the inner cover 2 includes a body 22 and a fixed skirt 21 surrounding the outer periphery of the body 22 . The fixed skirt 21 protrudes toward the liner 1 relative to the body 22 , and the pressure-bearing protrusion 13 abuts against the fixed skirt 21 .

[0054] The upwardly protruding fixed skirt 21 abuts against the pressure-bearing protrusion 13. On the one hand, the fixed skirt 21 protrudes upward relative to the main body 22, so that after the fixed skirt 21 abuts the pressure-bearing protrusion 13, a gap still exists between the main body 22 and the lining cover 1, and the two do not contact each other. This ensures that the inner cover 2 and the lining cover 1 only abut at the pressure-bearing protrusion 13, and the pressure is transmitted through the pressure-bearing protrusion 13. On the other hand, the main body 22 is a large plate-like structure with relatively low structural strength. However, the fixed skirt 21, due to its upward protrusion, has greater structural strength than the main body 22. The abutment of the fixed skirt 21 against the pressure-bearing protrusion 13 makes the abutment between the two more stable and the force transmission more reliable. At the same time, it also makes the inner cover 2 less likely to deform when pressed, which helps to ensure the posture stability of the inner cover 2 after pressure is applied, thereby maintaining a reliable seal between the lid and the pot body and ensuring normal pressure cooking.

[0055] Specifically, such as Figure 6 、 Figure 7 As shown, the fixing skirt 21 has a horizontally extending contact surface, which abuts against the pressure-bearing protrusion 13 via the contact surface.

[0056] In a preferred embodiment, Figure 3 、 Figure 4 As shown, the pot cover assembly also includes a reinforcement member 3, which is fixed to the side of the lining cover 1 facing away from the inner cover 2. The reinforcement member 3 is provided with a bending portion 33, which corresponds to the pressure-bearing protrusion 13 up and down, and the bending portion 33 is provided with a reinforcement protrusion 35.

[0057] The reinforcement member 3 is fixed to the upper side of the lining cover 1. When the inner cover 2 pushes upward against the lining cover 1, it provides downward support for the lining cover 1, further enhancing the structural strength of the lining cover 1. The bent structure of the reinforcement member 3 also provides greater structural strength at the bent portion 33. Therefore, aligning the bent portion 33 with the pressure-bearing protrusion 13 above and below further enhances the structural strength of the pressure-bearing protrusion 13 and reduces the likelihood of deformation of the pressure-bearing protrusion 13. The provision of the reinforcement protrusion 35 also further increases the strength of the bent portion, making it less likely to deform when subjected to force, thereby providing stable support for the pressure-bearing protrusion 13.

[0058] Specifically, such as Figure 3 、 Figure 4 As shown, the reinforcing protrusion 35 is arranged within the angle formed by the bent portion 33 .

[0059] like Figure 9 As shown, the projection of the pressure-bearing protrusion 13 toward the lining cover 1 covers the bent portion 33 .

[0060] Preferably, the reinforcement member 3 is a structure made of metal material.

[0061] Furthermore, if Figure 2As shown, a fixing position 15 is provided on the side of the lining cover 1 facing away from the inner cover 2. The pot cover assembly also includes fasteners, and the reinforcement member 3 is fixed to the fixing position 15 by the fasteners. The fixing position 15 is arranged adjacent to the pressure-bearing protrusion 13. The reinforcement member 3 is fixedly connected to the lining cover 1 by fasteners such as screws, which doubles the strength of the lining cover 1 and ensures normal operation in a high-pressure environment. Under the action of the preload force, the reinforcement member 3 and the lining cover 1 are tightly pulled, thereby improving the tightness of the contact between the two, improving the support effect and the structural reinforcement effect. The fixing position 15 is close to the pressure-bearing protrusion 13, so the fasteners can be used to further improve the structural strength of this area.

[0062] Preferably, the fixing position 15 comprises a fixing column protruding upward from the lining cover 1. Figure 2 As shown, the reinforcing rib 14 includes a first rib position 141 and a second rib position 142 that are perpendicular to each other, and the fixing position 15 is located in the space enclosed by the first rib position 141 and the second rib position 142 .

[0063] Specifically, such as Figure 3 As shown, the reinforcement 3 includes a support plate 31 and a protrusion 32 that bulges upward relative to the support plate 31. The support plate 31 is in contact with the upper surface of the lining cover 1. There is an accommodating space between the protrusion 32 and the upper surface of the lining cover 1. The reinforcement rib 14 is accommodated in the accommodating space, and the bent portion 33 is located between the support plate 31 and the protrusion 32.

[0064] The support plate 31 contacts the upper surface of the liner 1, covering a portion of the upper side of the liner 1, and is fastened with fasteners, ensuring a tighter contact and connection between the two, allowing the reinforcement member 3 to provide stable support for the liner 1. The protrusion 32 bulges upward to create a space on the lower side for accommodating the reinforcing rib 14, making the overall reinforcement member 3 more compatible with the shape of the upper surface of the liner 1, further improving the fit.

[0065] Preferably, if Figure 2 As shown, the lining cover 1 has a front area 11 and a rear area 12, the rear area 12 is provided with a connecting arm 121 for rotationally connecting to the pot body, the front area 11 is provided with a snap portion 111 for locking with the pot body, and the reinforcing rib 14 extends from the front area 11 to the rear area 12.

[0066] The connecting arm 121 of the rear region 12 of the liner 1 is used for rotational connection with the pot body, while the buckle portion 111 of the front region 11 is used to lock with the pot body. When the pressure in the pot rises, the gas pushes the pot lid upward. However, because the buckle portion 111 of the front region 11 is locked to the pot body and the connecting arm 121 of the rear region 12 is connected to the pot body, the front and rear regions 11 and 12 of the liner 1 are restricted. Therefore, the front and rear regions 11 and 12 are easily deformed or damaged, which places high demands on the structural strength. In this embodiment, the reinforcing rib 14 extends from the front area 11 to the rear area 12, passing through the pressure-bearing protrusion 13. Therefore, the reinforcing rib 14 can not only play a structural reinforcement role at the pressure-bearing protrusion 13, but also play a structural reinforcement role at the snap-fit ​​portion 111 of the front area 11 of the lining cover 1 and the connecting arm 121 of the rear area 12, thereby improving the strength of each stress-bearing position of the lining cover 1 as a whole, so that the reinforcing rib 14 has multiple uses without the need to set up other additional reinforcing structures, simplifying the structure of the lining cover 1 and saving costs.

[0067] Preferably, if Figure 2 As shown, the pressure-bearing protrusion 13 is partially provided in the front region 11 and partially provided in the rear region 12 , so that the reinforcing rib 14 extending from the front region 11 to the rear region 12 can naturally pass through the pressure-bearing protrusion 13 .

[0068] Furthermore, if Figure 3 As shown, the pot cover assembly further comprises a reinforcement member 3 fixed to the side of the lining cover 1 facing away from the inner cover 2 , the reinforcement member 3 has a matching arm 34 located in the rear area 12 , and the matching arm 34 is provided with an installation opening 341 for the rotation shaft to pass through.

[0069] The reinforcement 3 can not only provide downward support for the lining cover 1, so that the lining cover 1 can withstand a greater force from the inner cover 2, but also cooperate with the rotating shaft. On the one hand, it plays a positioning role in the installation of the rotating shaft, reducing the difficulty of assembly. On the other hand, the matching wall can also support the rotating shaft. When the rotating shaft is subjected to force, the rotation can squeeze the matching wall and transmit the force to the reinforcement 3, so that the reinforcement 3 bears part of the force from the rotating shaft, thereby dispersing the force on the rotating shaft and improving the structural strength and stability of the connection between the rear end of the lining cover 1 and the pot body.

[0070] The utility model also discloses a pressure cooking device, comprising a pot body and an inner pot placed in the pot body, and also comprising the above-mentioned pot cover assembly, wherein the inner cover 2 covers the inner pot so that the inner cover 2 and the inner pot cooperate to form a cooking cavity.

[0071] It should be noted that the pressure cooking appliance of the present invention can be a high-pressure cooking appliance, such as a pressure cooker, or a micro-pressure cooking appliance, such as a micro-pressure rice cooker, as long as it can cook in an environment higher than atmospheric pressure.

[0072] Preferably, if Figure 2 As shown, the lining cover 1 has a connecting end located in the rear area 12 and an opening and closing end located in the front area 11. The connecting end is rotatably connected to the pot body, and the opening and closing end is provided with a snap portion 111, which can be locked with the front end of the pot body. The pot cover assembly can be flipped up and down around the connection to open or close the cover.

[0073] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0074] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0075] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A pot cover assembly, comprising a lining cover and an inner cover located below the lining cover, wherein the inner cover cooperates with the pot body to form a cooking cavity, characterized in that: The lining cover is provided with a plurality of pressure-bearing protrusions protruding toward the inner cover along the circumference of the inner cover. The inner cover can abut against the pressure-bearing protrusions to transmit the force to the pressure-bearing protrusions. The lining cover is provided with reinforcing ribs on the side away from the inner cover. The reinforcing ribs are adjacent to the pressure-bearing protrusions or arranged correspondingly up and down.

2. The pot cover assembly according to claim 1, characterized in that: The reinforcing rib includes a first rib position and a second rib position perpendicular to the first rib position. The second rib position is multiple and is arranged at intervals along the length direction of the first rib position. The first rib position and the second rib position are connected.

3. The pot cover assembly according to claim 1, characterized in that: A pressure-bearing plane for contacting the inner cover is provided on a side of the pressure-bearing protrusion facing the inner cover.

4. The pot cover assembly according to claim 1, characterized in that: The inner cover includes a body and a fixed skirt surrounding the outer circumference of the body. The fixed skirt protrudes relative to the body toward the lining cover, and the pressure-bearing protrusion abuts against the fixed skirt.

5. The pot cover assembly according to claim 1, characterized in that: The pot cover assembly also includes a reinforcement member, which is fixed to the side of the lining cover away from the inner cover. The reinforcement member is provided with a bending portion, which corresponds to the pressure-bearing protrusion up and down, and the bending portion is provided with a reinforcement protrusion.

6. The pot cover assembly according to claim 5, characterized in that: A fixing position is provided on the side of the lining cover facing away from the inner cover. The pot cover assembly further comprises a fastener, and the reinforcement is fixed to the fixing position via the fastener. The fixing position is arranged adjacent to the pressure-bearing protrusion.

7. The pot cover assembly according to claim 5, characterized in that: The reinforcement includes a support plate and a protrusion that bulges upward relative to the support plate. The support plate contacts the upper surface of the lining cover. There is an accommodating space between the protrusion and the upper surface of the lining cover. The reinforcement rib is accommodated in the accommodating space. The bent portion is located between the support plate and the protrusion.

8. The pot cover assembly according to claim 1, characterized in that: The lining cover has a front area and a rear area, the rear area is provided with a connecting arm for rotationally connecting to the pot body, the front area is provided with a snap portion for locking with the pot body, and the reinforcing rib extends from the front area to the rear area.

9. The pot cover assembly according to claim 8, characterized in that: The pot cover assembly further comprises a reinforcing member fixed to the side of the lining cover facing away from the inner cover, the reinforcing member comprises a matching arm located in the rear area, and the matching arm is provided with a mounting opening for the rotating shaft to pass through.

10. A pressure cooking device comprising a pot body and an inner pot placed in the pot body, characterized in that: It also includes the pot cover assembly according to any one of claims 1 to 9, wherein the inner cover covers the inner pot so that the inner cover and the inner pot cooperate to form a cooking cavity.

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