Pressure cooking utensil

Abstract

The pressure cooking utensil comprises a pot body and a pot cover, the pot cover is provided with a connecting end, the connecting end is rotationally connected with the pot body through a rotating shaft, a first reinforcing piece is fixed to the connecting end, a second reinforcing piece is fixed to the pot body, the rotating shaft penetrates through the first reinforcing piece and the second reinforcing piece, and the first reinforcing piece is provided with a force transmission part; the second reinforcing piece is provided with a matching part, and the force transmission part is matched with the matching part so that the force transmission part can transmit acting force to the matching part. The first reinforcing piece and the second reinforcing piece are matched so that acting force can be transmitted between the first reinforcing piece and the second reinforcing piece. When the first reinforcer is stressed to deform, part of acting force is transmitted to the second reinforcer, so that when the connecting end of the pot cover is stressed, the acting force is jointly borne by the first reinforcer and the second reinforcer, the stress of the first reinforcer can be relieved, the acting force is more evenly dispersed on the first reinforcer and the second reinforcer, and the service life of the pot cover is prolonged. And damage caused by stress concentration of a single reinforcer is avoided.

Description

Technical Field

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

[0002] Pressure cooking appliances utilize the physical phenomenon that the boiling point of liquid increases under higher pressure. This allows water to reach a higher temperature without boiling, allowing food to be stewed more efficiently. Therefore, they are widely used in kitchens.

[0003] Pressure cooking appliances include pressure cookers, micro-pressure rice cookers, and so on. The lids of some pressure cooking appliances are rotatably connected to the pot body via structures such as a rotating shaft and a torsion spring, allowing the lid to flip up and down relative to the pot body to open and close. During the pressure cooking process, because the air pressure inside the pot is higher than the external atmospheric pressure, the gas inside the pot will exert an upward force on the lid. However, the movement of the lid is restricted by structures such as the rotating shaft, so the force is more concentrated on the rotating shaft, which is the rotating connection between the lid and the pot body, causing the rotating shaft to squeeze the lid or pot body. Because the connection between the lid and the pot body is mostly made of plastic, the structural strength is relatively low. Therefore, when the squeezing force is too great, the risk of breakage or damage is greatly increased.

[0004] In the prior art, some pressure cooking appliances incorporate reinforcements, such as plates, on the connection between the lid and the pot body to enhance structural strength. However, the reinforcements on the lid and the pot body are relatively independent: the lid reinforcements serve only to strengthen the lid connection, while the pot reinforcements serve only to strengthen the pot body connection. When the lid is under pressure, the applied force is borne more by the lid, concentrating on the lid reinforcements while the pot body reinforcements bear less force. This places extremely high demands on the strength of the lid reinforcements, increasing costs and significantly increasing the risk of damage. Utility Model Content

[0005] The utility model provides a pressure cooking appliance to solve the problem that when pressure is applied to the inside of a pot, stress is concentrated on a reinforcement structure at a connection of a pot cover, which causes the reinforcement structure at the connection of the pot cover to be easily damaged.

[0006] The technical solution adopted by this utility model is:

[0007] A pressure cooking appliance includes a pot body and a pot lid. The pot lid has a connecting end, which is rotatably connected to the pot body via a rotating shaft. A first reinforcement is fixed to the connecting end, and a second reinforcement is fixed to the pot body. The rotating shaft passes through the first and second reinforcements. The first reinforcement is provided with a force transmission part, and the second reinforcement is provided with a matching part. The force transmission part cooperates with the matching part so that the force transmission part can transmit a force to the matching part.

[0008] The pressure cooking device of the present invention also has the following additional technical features:

[0009] The matching portion is located at a side of the force transmission portion away from the center of the pot cover and matches with a stopper of the force transmission portion.

[0010] The force transmission part includes a folding rib arranged on the first reinforcement member, the second reinforcement member has a side wall, and the side wall is provided with an installation groove for installing the rotating shaft. The folding rib is located in the installation groove to cooperate with the inner wall of the installation groove to form an accommodating space for accommodating the rotating shaft, and the groove wall of the installation groove constitutes a matching part.

[0011] The first reinforcement includes a first mating wall and a second mating wall located outside the first mating wall. The first mating wall is provided with a shaft hole for the shaft to pass through. The force transmission part is provided on the first mating wall. The first reinforcement also includes a reinforcing wall, which connects the first mating wall and the second mating wall.

[0012] At least a portion of the second matching wall extends obliquely downward toward the center of the pot cover.

[0013] The pot cover includes a lining cover and an inner cover, the pot body includes an outer cover and a middle ring placed on the top of the outer cover, the inner cover and the pot body cooperate to form a cooking cavity, the lining cover is rotatably connected to the middle ring, the first reinforcement is fixed to the lining cover, and the second reinforcement is fixed to the middle ring.

[0014] The pot body also includes an inner pot arranged inside the outer cover, the edge of the inner pot is provided with an outer turning edge, a pressure ring is arranged above the middle ring, and the outer turning edge rests on the pressure ring.

[0015] The connecting end is provided with connecting arms at intervals along the circumference of the pot cover, and there is an installation space between adjacent connecting arms. The first reinforcement member and the second reinforcement member are both located in the installation space.

[0016] The pot body is provided with a connecting seat, which is located in the installation space. There is an installation cavity inside the connecting seat. The first reinforcement is located in the installation cavity. There is an opening on the side of the connecting seat away from the center of the pot cover. The pressure cooking appliance also includes a cover plate, which covers the opening.

[0017] The force transmission parts are located at both ends of the rotating shaft along the axial direction of the rotating shaft, the matching parts and the force transmission parts are arranged in a one-to-one correspondence, and a placement space for installing the torsion spring is formed between the force transmission parts. The first reinforcement is also provided with an avoidance groove for avoiding the torsion spring support foot.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the present invention, a first reinforcement is provided at the connection end of the pot lid, and a second reinforcement is provided at the corresponding connection end of the pot body. The first reinforcement and the second reinforcement cooperate to enable force to be transmitted between the two. Consequently, the first reinforcement not only serves as a structural reinforcement for the connection end of the pot lid, and the second reinforcement not only serves as a structural reinforcement for the connection to the pot body, but also, when the first reinforcement is deformed by force, it can transfer part of the force to the second reinforcement. Consequently, when the connection end of the pot lid is subjected to force, the force is shared by the first and second reinforcements. This, on the one hand, improves the overall strength of the first and second reinforcements, enabling it to withstand greater force. On the other hand, it can alleviate the force on the first reinforcement, distributing the force more evenly across the first and second reinforcements, thus avoiding damage caused by stress concentration on a single reinforcement.

[0020] 2. As a preferred embodiment of the present invention, the mating portion is located on a side of the force-transmitting portion away from the center of the pot lid and engages with a force-transmitting portion stop. When the pot lid is pushed upward by the gas in the pot, the connection structure with the pot lid restricts the connection end, causing a horizontal outward force (away from the center of the pot lid). Positioning the mating portion on the outside of the force-transmitting portion allows the force-transmitting portion to deform outward due to the force, squeezing the mating portion and transferring the force to the second reinforcement member, thereby applying force to the first and second reinforcement members as a whole.

[0021] 3. As a preferred embodiment of the present invention, the first reinforcement member includes a first mating wall and a second mating wall located on the outside of the first mating wall. The first mating wall is provided with a shaft hole for the shaft to pass through. The force transmission portion is provided on the first mating wall. The first reinforcement member also includes a reinforcing wall, which connects the first mating wall with the second mating wall. The first mating wall is provided with a shaft hole for installing the shaft. The second mating wall is located on the outside of the connection end. When the shaft is subjected to force, the force will first be transmitted to the first mating wall, and then transmitted to the second mating wall via the reinforcing wall, so that the first mating wall and the second mating wall are subjected to force together, making the stress more dispersed and reducing the risk of the first mating wall being subjected to concentrated force and breaking. At the same time, the provision of the reinforcing wall not only enables the force to be better transmitted from the first mating wall to the second mating wall, but also improves the connection strength between the two, thereby improving the overall structural strength of the first reinforcement member.

[0022] 4. As a preferred embodiment of the present invention, the pot lid includes a lining cover and an inner cover, the pot body includes an outer cover and a middle ring placed on top of the outer cover, the inner cover and the pot body cooperate to form a cooking cavity, the lining cover is rotatably connected to the middle ring, the first reinforcement is fixed to the lining cover, and the second reinforcement is fixed to the middle ring. After the pot lid is closed over the pot body, the inner cover and the inner pot inside the pot body form a cooking cavity. Therefore, during pressure cooking, the inner cover and the inner pot are under pressure, while the lining cover and the middle ring are not in direct contact with the pressure environment inside the pot. Therefore, it can be made of lower-cost materials, such as plastic, and the connection structure is set on the middle ring and the lining cover, which is also convenient for processing and manufacturing, reducing the processing difficulty. However, the strength of materials such as plastic is relatively low. Therefore, setting the first reinforcement on the lining cover and the second reinforcement on the middle ring can effectively improve the structural strength of the lining cover and the middle ring at the connection position, thereby reducing costs while reducing the risk of damage to the middle ring and the lining cover, thereby improving structural reliability.

[0023] 5. As a preferred embodiment of the present invention, the pot body also includes an inner pot placed inside the outer cover, the rim of the inner pot has an outer flange, and a pressure ring is provided above the middle ring, with the outer flange resting on the pressure ring. After the pot is pressed up, not only the pot cover is pushed upward, but the pot cover also exerts downward pressure on the inner pot, causing the inner pot to form a downward movement trend. Since the strength of the middle ring is relatively low, a pressure ring is provided on the top surface of the middle ring so that the flange of the inner pot rests on the pressure ring. At the same time, the pressure ring is made of a relatively strong material so that the pressure of the inner pot is transmitted to the pressure ring without directly squeezing the middle ring. While providing good support for the inner pot, it also reduces the risk of the middle ring being squeezed, deformed, or damaged by the inner pot. 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 an exploded view of the structure of a pressure cooking device according to one embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of a pressure cooking device according to one embodiment of the present invention;

[0027] Figure 3 for Figure 2 Magnified view of area A in the middle;

[0028] Figure 4 This is a schematic structural diagram of a first reinforcement member in one embodiment of the present invention;

[0029] Figure 5This is a schematic structural diagram of a second reinforcement member in one embodiment of the present invention;

[0030] Figure 6 This is a schematic structural diagram of a partial structure of a pressure cooking device according to one embodiment of the present invention;

[0031] Figure 7 for Figure 6 Magnified view of area B in the middle;

[0032] Figure 8 This is a schematic structural diagram of the middle ring in one embodiment of the present invention.

[0033] in:

[0034] 1 pot cover; 11 lining cover; 111 connecting end; 112 connecting arm; 113 installation space; 114 placement space; 12 inner cover; 13 rotating shaft; 14 torsion spring;

[0035] 2 pot body; 21 middle ring; 22 outer cover; 23 connecting seat; 231 installation cavity; 232 inner wall; 233 top wall; 234 installation wall; 24 pressure ring;

[0036] 3 first reinforcement member; 31 first matching wall; 311 rotating shaft hole; 32 second matching wall; 321 bending section; 322 avoidance groove; 33 reinforcement wall; 34 force transmission part; 341 folding rib;

[0037] 4 second reinforcement member; 41 side wall; 42 mounting groove; 43 matching portion;

[0038] 5. Cover plate;

[0039] 6 liner. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] like Figure 1 、 Figure 2 、 Figure 3 As shown, a pressure cooking appliance includes a pot body 2 and a pot cover 1. The pot cover 1 has a connecting end 111, which is rotatably connected to the pot body 2 via a rotating shaft 13. The connecting end 111 is fixed with a first reinforcement 3, and the pot body 2 is fixed with a second reinforcement 4. The rotating shaft 13 passes through the first reinforcement 3 and the second reinforcement 4. The first reinforcement 3 is provided with a force transmission part 34, and the second reinforcement 4 is provided with a matching part 43. The force transmission part 34 matches with the matching part 43 so that the force transmission part 34 can transmit the force to the matching part 43.

[0046] Preferably, the first reinforcement member 3 and the second reinforcement member 4 are both made of metal to have higher strength.

[0047] In the present invention, the connection end 111 of the pot lid 1 is provided with a first reinforcement member 3, and the corresponding connection end 111 of the pot body 2 is provided with a second reinforcement member 4. The first reinforcement member 3 and the second reinforcement member 4 cooperate to enable force to be transmitted between the two. Consequently, the first reinforcement member 3 not only serves as a structural reinforcement for the connection end 111 of the pot lid 1, and the second reinforcement member 4 not only serves as a structural reinforcement for the connection between the pot body 2, but also, when the first reinforcement member 3 is deformed by force, it can also transfer part of the force to the second reinforcement member 4. Consequently, when the connection end 111 of the pot lid 1 is subjected to force, the force is shared by the first reinforcement member 3 and the second reinforcement member 4. This, on the one hand, improves the overall strength of the first reinforcement member 3 and the second reinforcement member 4, enabling it to withstand greater force. On the other hand, it can alleviate the force on the first reinforcement member 3, so that the force is more evenly distributed between the first reinforcement member 3 and the second reinforcement member 4, avoiding stress concentration and damage to a single reinforcement member.

[0048] In addition, the rotating shaft 13 passes through the first reinforcement 3 and the second reinforcement 4, so that the installation of the first reinforcement 3 and the second reinforcement 4 can be positioned according to the position of the rotating shaft 13. After the rotating shaft 13 is installed, the first reinforcement 3 and the second reinforcement 4 can both limit the rotating shaft 13 and associate the rotating shaft 13, the first reinforcement 3 and the second reinforcement 4. While improving the structural stability, it is also more convenient for the rotating shaft 13 to transmit the force to the first reinforcement 3 and the second reinforcement 4.

[0049] It should be noted that the present invention does not limit the matching method of the force transmission part 34 and the matching part 43, as long as the force transmission part 34 and the matching part 43 can transmit the force to each other. For example, in one embodiment, one of the force transmission part 34 and the matching part 43 is a matching protrusion, and the other is a matching hole. The matching protrusion is inserted into the matching hole, so that when it is subjected to force, it can transmit the force through the contact between the matching protrusion and the hole wall of the matching hole. In another embodiment, the force transmission part 34 and the matching part 43 are fastened together by screws, clamping, etc. In yet another embodiment, the matching part 43 is located on at least one side of the outer periphery of the force transmission part 34, so that when the force transmission part 34 is deformed or moved toward this side, it can contact with the matching part 43 to transmit force.

[0050] For example, in a preferred embodiment, Figure 3 、 Figure 7 As shown, the matching portion 43 is located on a side of the force transmission portion 34 away from the center of the pot cover 1 and is matched with the stopper of the force transmission portion 34 .

[0051] When the pot cover 1 is pushed upward by the gas in the pot, due to the limitation of the connection structure between the pot cover 1, the connection end 111 is subjected to a horizontal outward force (away from the center of the pot cover 1), which causes the first reinforcement 3 to have a tendency to deform or move outward. The matching portion 43 is arranged on the outside of the force transmission portion 34, so that when the force transmission portion 34 is deformed outward due to the force, it can squeeze the matching portion 43, and then transmit the force to the second reinforcement 4, so that the first reinforcement 3 and the second reinforcement 4 are subjected to force as a whole.

[0052] Preferably, the force transmission portion 34 and the matching portion 43 are in contact through a plane, so that the contact between the two is more stable, and the force can be dispersed through the plane to avoid excessive local force of the force transmission portion 34 on the matching portion 43, which may cause deformation of the matching portion 43.

[0053] Further, if Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 As shown, the force transmission portion 34 includes a folding rib 341 arranged on the first reinforcement member 3, and the second reinforcement member 4 has a side wall 41. The side wall 41 is provided with a mounting groove 42 for mounting the rotating shaft 13. The folding rib 341 is located in the mounting groove 42 to cooperate with the inner wall of the mounting groove 42 to form an accommodating space for accommodating the rotating shaft 13. The groove wall of the mounting groove 42 constitutes a matching portion 43.

[0054] The sidewall 41 is perpendicular to the shaft 13 and defines a mounting slot 42, into which the shaft 13 is mounted. Furthermore, the folding rib 341 folds perpendicularly to the sidewall 41 to extend into the mounting slot 42. The folding rib 341 cooperates with the inner wall of the mounting slot 42 to form a receiving space within which the shaft 13 is located. When force is applied to the first reinforcement member 3, the folding rib 341 compresses the walls of the mounting slot 42, transmitting force to the second reinforcement member 4. Furthermore, the folding rib 341 acts as a limiter for the shaft 13, confining it within the receiving space.

[0055] Specifically, such as Figure 4 、 Figure 5 As shown, the mounting groove 42 extends vertically upward or downward to the edge of the side wall 41, forming a passage at the upper end or lower end of the side wall 41 for the rotation shaft 13 and the folding rib 341 to pass through. After the folding rib 341 extends into the mounting groove 42, its inner side edge (the side close to the center of the pot cover 1) and outer side edge (the side away from the center of the pot cover 1) can respectively abut against the inner and outer groove walls of the mounting groove 42 to transmit force.

[0056] As a preferred embodiment of the present invention, Figure 4As shown, the first reinforcement 3 includes a first mating wall 31 and a second mating wall 32 located on the outside of the first mating wall 31 (on the side away from the center of the pot cover 1). The first mating wall 31 is provided with a rotating shaft hole 311 for the rotating shaft 13 to pass through. The force transmission part 34 is provided on the first mating wall 31. The first reinforcement 3 also includes a reinforcing wall 33, which connects the first mating wall 31 and the second mating wall 32.

[0057] The first mating wall 31 is provided with a shaft hole 311 for mounting the shaft 13. The second mating wall 32 is located outside the connecting end 111. When the shaft 13 is subjected to force, the force is first transmitted to the first mating wall 31, and then to the second mating wall 32 via the reinforcing wall 33. As a result, the first and second mating walls 31 and 32 are subjected to force together, making the stress more dispersed and reducing the risk of fracture caused by concentrated force on the first mating wall 31. At the same time, the provision of the reinforcing wall 33 not only allows the force to be better transmitted from the first mating wall 31 to the second mating wall 32, but also improves the connection strength between the two, thereby improving the overall structural strength of the first reinforcement member 3.

[0058] Specifically, such as Figure 4 As shown, the first mating wall 31 is perpendicular to the rotating shaft 13 and is located at both ends of the rotating shaft 13 along the axial direction of the rotating shaft 13. The second reinforcement member 4 also has two side walls 41, which are located outside the first mating wall 31. The second mating wall 32 is located outside the side wall 41 of the pot cover 1 (on the side away from the center of the pot cover 1).

[0059] Further, if Figure 3 、 Figure 4 As shown, at least part of the second matching wall 32 extends downwardly and obliquely toward the center of the pot cover 1, so as to be closer to the side wall 41 of the pot cover 1, thereby making the structure of the connecting end 111 of the pot cover 1 more compact and reducing the overall occupied space. Figure 4 As shown, the second mating wall 32 has a bending section 321. Since the second mating wall 32 is a plate-like structure with a large area, its structural strength is relatively low. By setting the bending section 321, the strength of the second mating wall 32 can be improved and the risk of deformation of the second mating wall 32 can be reduced.

[0060] Preferably, if Figure 2 、 Figure 6 As shown, the pot cover 1 includes a lining cover 11 and an inner cover 12, the pot body 2 includes an outer cover 22 and a middle ring 21 placed on the top of the outer cover 22, the inner cover 12 and the pot body 2 cooperate to form a cooking cavity, the lining cover 11 is rotatably connected to the middle ring 21, the first reinforcement 3 is fixed to the lining cover 11, and the second reinforcement 4 is fixed to the middle ring 21.

[0061] After the pot lid 1 covers the pot body 2, the inner lid 12 and the inner pot 6 inside the pot body 2 form a cooking cavity. Therefore, during pressure cooking, the inner lid 12 and the inner pot 6 are under pressure, while the lining cover 11 and the middle ring 21 are not in direct contact with the pressure environment within the pot. Therefore, they can be made of lower-cost materials, such as plastic, and the connection structure is set on the middle ring 21 and the lining cover 11, which is also convenient for processing and reduces the processing difficulty. However, materials such as plastic have low strength. Therefore, the first reinforcement member 3 is set on the lining cover 11 and the second reinforcement member 4 is set on the middle ring 21. This can effectively improve the structural strength of the lining cover 11 and the middle ring 21 at the connection point, thereby reducing costs while reducing the risk of damage to the middle ring 21 and the lining cover 11, thereby improving structural reliability.

[0062] Preferably, the second reinforcement member 4 further has a supporting portion located below the middle ring 21 , and the supporting portion abuts against the lower surface of the middle ring 21 to provide upward support for the position of the middle ring 21 corresponding to the connecting end 111 .

[0063] Furthermore, if Figure 2 As shown, the pot body 2 further includes an inner pot 6 placed inside the outer cover 22 . The rim of the inner pot 6 has an outward turning edge. A pressure ring 24 is provided above the middle ring 21 , and the outward turning edge rests on the pressure ring 24 .

[0064] After the pressure is applied to the pot, not only the pot cover 1 is subjected to an upward thrust, but the pot cover 1 also exerts downward pressure on the inner pot 6, causing the inner pot 6 to tend to move downward. Since the strength of the middle ring 21 is relatively low, a pressure ring 24 is provided on the top surface of the middle ring 21, so that the flange of the inner pot 6 rests on the pressure ring 24. At the same time, the pressure ring 24 is made of a material with relatively high strength, so that the pressure of the inner pot 6 is transmitted to the pressure ring 24 without directly squeezing the middle ring 21. While providing good support for the inner pot 6, it also reduces the risk of the middle ring 21 being squeezed, deformed or damaged by the inner pot 6.

[0065] Preferably, connecting end 111 is provided with connecting arms 112 spaced apart along the circumference of lid 1, with mounting spaces 113 defined between adjacent connecting arms 112. Both first reinforcement member 3 and second reinforcement member 4 are located within mounting spaces 113. Rotating shaft 13 is also mounted within mounting spaces 113, so that both the connecting structure and the reinforcement structure are located within mounting spaces 113. This optimizes the arrangement of components, rationally utilizes the space between lid 1 and pot body 2, and makes the connecting and reinforcement structures more compact, thereby maintaining the aesthetic appearance of the pressure cooking apparatus while facilitating a miniaturized design.

[0066] like Figure 1As shown, the pot body 2 is provided with a connecting seat 23, which is located in the installation space 113. The connecting seat 23 has an installation cavity 231 inside, and the first reinforcement 3 is located in the installation cavity 231. The connecting seat 23 has an opening on the side away from the center of the pot cover 1. The pressure cooking appliance also includes a cover plate 5, which covers the opening.

[0067] The cover 5 shields the opening from the outside of the pressure cooking appliance, preventing the user from seeing the internal connection structure and reinforcement structure from the outside, thereby improving the appearance. It also prevents liquid, oil, and food residue on the outer surface of the pressure cooking appliance from entering the interior through the opening, ensuring the cleanliness of the connection.

[0068] Preferably, if Figure 8 As shown, the connecting base 23 has a top wall 233, an inner side wall 232 near the center of the pot body 2, and mounting walls 234 located on both sides of the inner side wall 232. The top wall 233, the inner side wall 232, and the mounting walls 234 form a mounting cavity 231. The mounting wall 234 is provided with a matching groove for mounting the rotating shaft 13, and the matching groove has a top opening.

[0069] Preferably, if Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the force transmission part 34 is located at both ends of the rotating shaft 13 along the axial direction of the rotating shaft 13, the matching part 43 is arranged in a one-to-one correspondence with the force transmission part 34, and a placement space 114 for installing the torsion spring 14 is formed between the force transmission parts 34. The first reinforcement member 3 is also provided with an avoidance groove 322 for avoiding the support foot of the torsion spring 14.

[0070] The force transmission portion 34 and the mating portion 43 are mated at both ends of the rotating shaft 13. When the first reinforcement member 3 is subjected to force, the force transmission portions 34 on both sides simultaneously transmit the force to the mating portion 43. This further disperses the points of force application and makes the force more evenly distributed on both sides, improving structural stability and force transmission stability. Furthermore, space is left between the force transmission portions 34 for the installation of the torsion spring 14, making the structural layout of the connecting end 111 more compact.

[0071] like Figure 7 As shown, the second matching wall 32 of the first reinforcement 3 is provided with an avoidance groove 322 to avoid the legs of the torsion spring 14 from interfering with the first reinforcement 3 when the torsion spring 14 is compressed or stretched and deformed.

[0072] 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.

[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 pressure cooking device comprising a pot body and a pot cover, wherein the pot cover has a connecting end, and the connecting end is rotatably connected to the pot body via a rotating shaft, characterized in that: A first reinforcement is fixed to the connecting end, a second reinforcement is fixed to the pot body, the rotating shaft passes through the first reinforcement and the second reinforcement, the first reinforcement is provided with a force transmission part, and the second reinforcement is provided with a matching part, the force transmission part cooperates with the matching part so that the force transmission part can transmit the force to the matching part.

2. The pressure cooking device according to claim 1, wherein The matching portion is located at a side of the force transmission portion away from the center of the pot cover and matches with the stopper of the force transmission portion.

3. The pressure cooking device according to claim 2, wherein: The force transmission portion includes a folding rib arranged on the first reinforcement member, the second reinforcement member has a side wall, the side wall is provided with a mounting groove for installing the rotating shaft, the folding rib is located in the mounting groove to cooperate with the inner wall of the mounting groove to form an accommodating space for accommodating the rotating shaft, and the groove wall of the mounting groove constitutes the matching portion.

4. The pressure cooking appliance according to claim 1, wherein The first reinforcement member includes a first mating wall and a second mating wall located outside the first mating wall. The first mating wall is provided with a shaft hole for the shaft to pass through. The force transmission part is provided on the first mating wall. The first reinforcement member also includes a reinforcing wall, which connects the first mating wall and the second mating wall.

5. The pressure cooking device according to claim 4, characterized in that At least a portion of the second matching wall extends obliquely downward toward the center of the pot cover.

6. The pressure cooking appliance according to claim 1, wherein The pot cover includes a lining cover and an inner cover, the pot body includes an outer cover and a middle ring placed on the top of the outer cover, the inner cover and the pot body cooperate to form a cooking cavity, the lining cover is rotatably connected to the middle ring, the first reinforcement is fixed to the lining cover, and the second reinforcement is fixed to the middle ring.

7. The pressure cooking appliance according to claim 6, wherein The pot body further comprises an inner pot placed inside the outer cover, the rim of the inner pot has an outer turning edge, a pressure ring is arranged above the middle ring, and the outer turning edge rests on the pressure ring.

8. The pressure cooking appliance according to claim 1, wherein The connecting end is provided with connecting arms at intervals along the circumference of the pot cover, and there is an installation space between adjacent connecting arms. The first reinforcement member and the second reinforcement member are both located in the installation space.

9. The pressure cooking appliance according to claim 8, wherein The pot body is provided with a connecting seat, which is located in the installation space. The connecting seat has an installation cavity inside. The first reinforcement is located in the installation cavity. The connecting seat has an opening on the side away from the center of the pot cover. The pressure cooking appliance also includes a cover plate, which covers the opening.

10. The pressure cooking device according to any one of claims 1 to 9, characterized in that: The force transmission parts are located at both ends of the rotating shaft along the axial direction of the rotating shaft, the matching parts are arranged in a one-to-one correspondence with the force transmission parts, and a placement space for installing a torsion spring is formed between the force transmission parts. The first reinforcement is also provided with an avoidance groove for avoiding the torsion spring support foot.

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