A pressure cooking appliance

Abstract

The present invention relates to a pressure cooking device, comprising a pot body assembly; a pot lid assembly adapted to be quickly aligned and covered on the pot body assembly via a concave-convex positioning structure; a locking rod assembly rotatably arranged on the pot lid assembly, a locking groove formed on the pot body assembly, the locking groove having an escape opening and a locking limit portion; wherein the escape opening allows the locking rod assembly to enter or escape the locking groove, the locking limit portion is adapted to engage with the locking rod assembly to lock the pot lid assembly and the pot body assembly, and the locking rod assembly is adapted to rotate between a locked position engaged with the locking limit portion and an unlocked position engaged with the escape opening. In the present invention, the pot lid assembly and the pot body assembly are quickly aligned and positioned via the concave-convex engagement, and the pot lid assembly and the pot body assembly can be locked or unlocked by rotating the locking rod assembly, making the lid opening and closing operation simpler and more convenient, and easy to clean, without the problem of scratching the user's hands.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a pressure cooking appliance. Background Art

[0002] Pressure cooking appliances currently on the market, such as pressure cookers, typically comprise a lid assembly and a pot body assembly. The pot body assembly comprises a housing, an outer pot, an inner pot, and a support ring disposed between the inner and outer pots. The lid assembly comprises a top cover, a steel cover, and an inner cover disposed between the outer periphery of the steel cover and the inner periphery of the top cover. A plurality of outwardly projecting latching teeth are circumferentially spaced apart at the top opening of the outer pot, extending outward from a portion of the pot edge and folding downward. The steel cover also has a plurality of inwardly projecting latching teeth, extending downward from a portion of its circumferential edge and folding inward, disposed at circumferential intervals. The pressure cooker lid assembly closes by rotating the inwardly projecting latching teeth on the steel cover into engagement with the outwardly projecting latching teeth on the outer pot.

[0003] However, since the inner-turned buckle of the pot lid is an inward-facing buckle surface, it is not only difficult to clean, but also the steel lid is a sheet metal part and the user can easily scratch his hands when cleaning. Moreover, since the inner-turned buckle of the pot lid and the outer-convex buckle of the outer pot are opened and closed by rotating and buckling, not only when closing the lid, it is necessary to rotate to the position where the inner-turned buckle and the outer-convex buckle correspond to each other before the lid can be closed, but also when opening the lid, it is necessary to rotate to the position where the inner-turned buckle and the outer-convex buckle are misaligned before the lid can be opened. The requirements are high, the operation is difficult, and it is difficult to open and close the lid. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the pressure cooker in the prior art that the lid is opened and closed by rotating and snapping, which has high requirements, is difficult to operate, is difficult to open and close the lid, and the snap teeth on the lid are difficult to clean, so as to provide a pressure cooking appliance with simpler and more convenient operation of opening and closing the lid and easy cleaning.

[0005] In order to solve the above problems, the present invention provides a pressure cooking appliance, which includes: a pot body assembly, a pot lid assembly, and a locking rod assembly, wherein the pot lid assembly is suitable for being quickly aligned and covered on the pot body assembly through a concave-convex positioning structure; the locking rod assembly is rotatably arranged on the pot lid assembly, and a locking groove suitable for cooperating with the locking rod assembly is formed on the pot body assembly, and the locking groove has an avoidance opening and a locking limit portion; wherein the avoidance opening can allow the locking rod assembly to enter or escape from the locking groove, and the locking limit portion is suitable for cooperating with the locking rod assembly to achieve locking of the pot lid assembly and the pot body assembly, and the locking rod assembly is suitable for rotating between a locking position cooperating with the locking limit portion and an unlocking position cooperating with the avoidance opening.

[0006] Optionally, the pot body assembly includes a support ring, and the locking groove includes an arc-shaped groove formed by the inward concave top wall of the support ring for the locking rod assembly to move therein, and an arc-shaped sealing wall fixedly arranged on one side of the top of the arc-shaped groove; one edge of the arc-shaped sealing wall is fixedly connected to the arc-shaped groove, and the other edge is spaced apart from the arc-shaped groove to form an arc-shaped opening that can avoid the movement of the locking rod assembly; an opening is set between one end of the arc-shaped sealing wall and the arc-shaped groove to form an avoidance opening part, and the other end is closed and connected to the arc-shaped groove to form a locking limit part.

[0007] Optionally, one side edge of the arc-shaped blocking wall close to the locking limit portion is concave to form a limit recess for accommodating the limit lock rod assembly.

[0008] Optionally, the locking rod assembly includes a locking rod, which includes: a locking rod body and a locking portion, the locking rod body is suitable for moving along the path of the arc-shaped opening; the locking portion is fixedly arranged at the lower end of the locking rod body, and is suitable for extending into the locking groove from the avoidance opening portion after the pot cover assembly and the pot body assembly are covered, and can move along the locking groove to a locking position that is blocked and cooperated with the locking limit portion.

[0009] Optionally, the locking rod assembly also includes: an operating handle and a connecting shaft, the operating handle is arranged on the outside of the pot cover assembly; a shaft hole is provided on the pot cover assembly to match the connecting shaft, one end of the connecting shaft is fixedly connected to the operating handle, and the other end extends from the shaft hole into the pot cover assembly and is connected to the upper end of the locking rod.

[0010] Optionally, the pot cover assembly includes a surface cover and an inner cover arranged on the inner circumference of the surface cover, and an installation space for accommodating the locking rod body is formed between the surface cover and the inner cover; the rotating shaft hole is opened on the surface cover, and the inner cover is provided with an arc-shaped avoidance groove for avoiding the movement of the locking rod body, and the lower end of the locking rod body extends out of the surface cover from the arc-shaped avoidance groove and folds outward to extend to form a locking portion.

[0011] Optionally, the concave-convex positioning structure includes: a first concave-convex positioning structure and a second concave-convex positioning structure, the first concave-convex positioning structure is arranged on the bottom wall of the pot cover assembly; the second concave-convex positioning structure is arranged on the top wall of the pot body assembly, and is suitable for cooperating with the first concave-convex positioning structure through a concave-convex matching manner to achieve rapid plug-in positioning of the pot cover assembly and the pot body assembly.

[0012] Optionally, the pot cover assembly includes a steel cover located at the bottom, and the first concave-convex positioning structure is a raised structure fixedly arranged on the lower surface of the steel cover; the pot body assembly includes an outer pot, and the second concave-convex positioning structure is a groove structure arranged on the edge of the outer pot corresponding to the raised structure.

[0013] Optionally, there are multiple groups of concave-convex positioning structures, which are arranged on the pot lid assembly and the pot body assembly at intervals along the circumferential direction; and / or, the first concave-convex positioning structure is a positioning rib with a cross-shaped cross-section, and the second concave-convex positioning structure is a positioning groove with a cross-shaped cross-section.

[0014] The present invention has the following advantages:

[0015] The pot cover assembly is adapted to be quickly aligned and covered on the pot body assembly by means of the concave-convex positioning structure, and the pot cover assembly and the pot body assembly are positioned by means of the concave-convex matching. The positioning method is simple and efficient, and the positioning process is convenient and quick, and can effectively ensure that after the pot cover assembly is covered on the pot body assembly, the locking rod assembly can be accurately docked with the avoidance opening of the locking groove, and can smoothly and quickly enter the locking groove through the avoidance opening to cooperate with the locking limit portion to achieve locking of the pot cover assembly and the pot body assembly. By rotating the locking rod assembly, it can be rotated between a locking position matched with the locking limit portion and an unlocking position matched with the avoidance opening, thereby locking or unlocking the pot cover assembly and the pot body assembly, making the opening and closing of the lid operation simpler and more convenient, and convenient to clean, without scratching the user's hands, and effectively solving the problems of the existing pressure cooker being difficult to clean, difficult to open and close the lid, and easy to scratch the user's hands during cleaning.

[0016] 2. In the pressure cooking appliance provided in the embodiment of the present invention, the arc-shaped sealing wall provided on the top of the locking groove is concavely arranged near one side edge of the locking limit portion to form a limiting recess that can accommodate the limiting locking rod assembly. The limiting recess can accommodate the limiting locking rod assembly. When the pot cover assembly is subjected to air pressure during cooking, the limiting recess can limit the position of the locking rod assembly, so that it can be stably maintained in the locked position, avoiding the phenomenon that the locking rod assembly rotates by itself in some unexpected situations and causing locking failure, thereby improving the reliability and safety of the position locking of the pot cover assembly and the pot body assembly.

[0017] 3. In the pressure cooking appliance provided in the embodiment of the present invention, the locking rod assembly includes a locking rod and an operating handle and a connecting shaft provided on the outside of the pot cover assembly. The pot cover assembly is provided with a shaft hole that matches the connecting shaft. One end of the connecting shaft is fixedly connected to the operating handle, and the other end extends into the pot cover assembly through the shaft hole and is connected to the upper end of the locking rod. The setting of the operating handle facilitates the user to manually lock or unlock the pot cover assembly, providing certain convenience for the user to open and close the cover.

[0018] 4. The pressure cooking device provided in the embodiment of the present invention has multiple groups of concave-convex positioning structures, and the multiple groups of concave-convex positioning structures are arranged at intervals along the circumferential direction on the pot cover assembly and the pot body assembly; through the arrangement of the multiple groups of concave-convex positioning structures, while achieving effective positioning of the pot cover assembly and the pot body assembly, rotation between the two can also be prevented, thereby improving the stability and reliability of the cooperation between the pot cover assembly and the pot body assembly.

[0019] 5. The pressure cooking device provided in the embodiment of the present invention has a concave-convex positioning structure including a first concave-convex positioning structure and a second concave-convex positioning structure. The first concave-convex positioning structure is a positioning rib with a cross-shaped cross section, and the second concave-convex positioning structure is a positioning groove with a cross-shaped cross section. The cross-shaped positioning rib has a better positioning effect than the conventional cylindrical positioning column, and the pot cover assembly is less likely to rotate accidentally, and is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a pot assembly in an embodiment is shown;

[0022] Figure 2 Shown Figure 1 A magnified view of the structure at point A;

[0023] Figure 3 A schematic structural diagram of the outer pot in the embodiment is shown;

[0024] Figure 4 A schematic structural diagram of a pot cover assembly in an embodiment is shown;

[0025] Figure 5 Shows a schematic structural diagram of the steel cover in an embodiment;

[0026] Figure 6 A schematic diagram showing a state in which the pot cover assembly and the pot body assembly are in an unlocked position after the surface cover and the inner cover of the pressure cooking device are removed;

[0027] Figure 7 A schematic diagram showing a state in which the pot cover assembly and the pot body assembly are in a locked position after the surface cover and the inner cover of the pressure cooking device according to the embodiment are removed;

[0028] Figure 8 A partial cross-sectional plan view of the embodiment of the pot cover assembly and the pot body assembly in a locked state is shown;

[0029] Figure 9 A partial cross-sectional isometric view of the embodiment of the pot cover assembly and the pot body assembly in a locked state is shown;

[0030] Description of reference numerals:

[0031] 1. Pot assembly; 11. Support ring; 12. Outer pot; 121. Second concave-convex positioning structure; 13. Cover;

[0032] 10. Locking groove; 101. Avoidance opening; 102. Locking limit portion; 103. Arc-shaped blocking wall; 1031. Limiting recess; 104. Arc-shaped opening; 105. Recessed portion;

[0033] 2. Pot cover assembly; 21. Surface cover; 22. Inner cover; 221. Arc-shaped avoidance groove; 23. Steel cover; 231. First concave-convex positioning structure;

[0034] 3. Locking rod assembly; 31. Locking rod; 311. Locking part; 32. Operating handle; 33. Connecting shaft. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figures 1 to 9 As shown, this embodiment provides a pressure cooking appliance, which includes: a pot body assembly 1, a pot cover assembly 2, and a locking rod assembly 3. The pot cover assembly 2 is suitable for being quickly aligned and covered on the pot body assembly 1 through a concave-convex positioning structure; the locking rod assembly 3 is rotatably arranged on the pot cover assembly 2, and a locking groove 10 suitable for cooperating with the locking rod assembly 3 is formed on the pot body assembly 1, and the locking groove 10 has an avoidance opening portion 101 and a locking limit portion 102; wherein the avoidance opening portion 101 allows the locking rod assembly 3 to enter or escape from the locking groove 10, and the locking limit portion 102 is suitable for blocking and cooperating with the locking rod assembly 3 to achieve locking of the pot cover assembly 2 and the pot body assembly 1, and the locking rod assembly 3 is suitable for rotating between a locking position cooperating with the locking limit portion 102 and an unlocking position cooperating with the avoidance opening portion 101.

[0040] The pressure cooking appliance provided in this embodiment is suitable for quickly aligning the pot cover assembly 2 with the pot body assembly 1 through the concave-convex positioning structure and covering it. The pot cover assembly 2 and the pot body assembly 1 are positioned by the concave-convex matching method. The positioning method is simple and efficient, and the positioning process is convenient and fast. It can effectively ensure that after the pot cover assembly 2 is covered on the pot body assembly 1, the locking rod assembly 3 can accurately dock with the avoidance opening 101 of the locking groove 10, and can smoothly and quickly enter the locking groove 10 through the avoidance opening 101 to block and cooperate with the locking limit part 102 to achieve the locking of the pot cover assembly 2 and the pot body assembly 1. The locking limit part 102 is locked. 02 is suitable for limiting the movement of the locking rod assembly 3 in the direction away from the pot body assembly 1, thereby preventing the pot cover assembly 2 from being lifted up under the action of internal air pressure during cooking. By rotating the locking rod assembly 3, it can be rotated between the locking position coordinated with the locking limit part 102 and the unlocking position coordinated with the avoidance opening part 101, thereby realizing the locking or unlocking of the pot cover assembly 2 and the pot body assembly 1, making the opening and closing operation of the lid simpler and more convenient, and easy to clean, and there is no problem of scratching the user's hands, which effectively solves the problems of the existing pressure cooker being difficult to clean, difficult to open and close the lid, and easy to scratch the user's hands during cleaning.

[0041] Optionally, in this embodiment, the pressure cooking appliance is a pressure cooking appliance such as an electric pressure cooker or a pressure cooker.

[0042] Optionally, combined Figure 1 、 Figure 2 、 Figures 6 to 9As shown, the pot body assembly 1 includes a support ring 11, and the locking groove 10 includes an arc-shaped groove formed by the inward concave top wall of the support ring 11 for the locking rod assembly 3 to move therein, and an arc-shaped sealing wall 103 fixedly arranged on one side of the top of the arc-shaped groove; one side edge of the arc-shaped sealing wall 103 is fixedly connected to the arc-shaped groove, and the other side edge is spaced apart from the arc-shaped groove to form an arc-shaped opening 104 that can avoid the movement of the locking rod assembly 3; an opening is set between one end of the arc-shaped sealing wall 103 and the arc-shaped groove to form an avoidance opening portion 101, and the other end is closed and connected to the arc-shaped groove to form a locking limit portion 102.

[0043] In the above embodiment, the arcuate blocking wall 103 is integrally formed with the support ring 11. The arcuate blocking wall 103 and the opening at one end of the arcuate groove are not sealed, forming an opening for the locking rod assembly 3 to enter or exit the locking groove 10. The arcuate opening 104 is provided to prevent movement of the locking rod assembly 3. The arcuate opening 104 communicates between the avoidance opening 101 and the locking stop 102, allowing the locking rod assembly 3 to move between the avoidance opening 101 and the locking stop 102. The locking stop 102 is formed by the surrounding side walls and bottom wall of the arcuate groove and the arcuate blocking wall 103.

[0044] Optionally, combined Figures 7 to 9 As shown, the locking rod assembly 3 includes a locking rod 31, and the locking rod 31 includes: a locking rod body and a locking portion 311. The locking rod body is suitable for moving along the path of the arc-shaped opening 104; the locking portion 311 is fixedly arranged at the lower end of the locking rod body, and is suitable for extending into the locking groove 10 from the avoidance opening 101 after the pot cover assembly 2 and the pot body assembly 1 are covered, and can move along the locking groove 10 to a locking position that is blocked and matched with the locking limit portion 102.

[0045] In the above embodiment, the locked position is achieved when the side of the locking rod assembly 3 abuts against the end wall of the locking groove 10, which is away from the avoidance opening 101, and the upper surface of the locking portion 311 is stopped and limited below the arcuate blocking wall 103. The bottom wall, end wall, and side walls of the locking groove 10, together with the arcuate blocking wall 103, form a confined space that can restrain the locking rod assembly 3. When the locking rod assembly 3 is rotated to the preset locked position, it is confined within the confined space.

[0046] Optionally, combined Figure 1 、 Figure 2 、 Figure 6 and Figure 7As shown, the arc-shaped blocking wall 103 is concavely arranged along one side edge near the locking limit portion 102 to form a limiting recess 1031 for accommodating the limiting lock rod assembly 3. The limiting recess 1031 can accommodate the limiting lock rod assembly 3. During the cooking process, when the pot lid assembly 2 is subjected to air pressure, the limiting recess 1031 can limit the position of the lock rod assembly 3, so that it can be stably maintained in the locked position, preventing the lock rod assembly 3 from rotating in some unexpected situations and causing the locking to fail, thereby improving the reliability and safety of the position locking of the pot lid assembly 2 and the pot body assembly 1.

[0047] Specifically, in this embodiment, the locking rod 31 is a strip-shaped plate structure, and the width of the limiting recess 1031 is slightly larger than the width of the locking rod 31 to accommodate the locking rod 31. A first limiting step suitable for limiting the position of the locking rod 31 is formed between the limiting recess 1031 and the main part of the arc-shaped sealing wall 103.

[0048] Optionally, the first limiting step is an arc-shaped step with a smooth transition connection. Such a design allows the user to rotate the locking rod assembly 3 from the locked position to the unlocked position, and it can more smoothly transition from the locking limit portion 102 to the arc-shaped opening 104 along the arc-shaped step, and then move along the arc-shaped opening 104 to the avoidance opening portion 101, without getting stuck.

[0049] Optionally, the arc-shaped groove has a first arc-shaped side wall and a second arc-shaped side wall that are oppositely arranged, the arc-shaped blocking wall 103 is fixedly connected to the upper edge of the first arc-shaped side wall, and a set gap is set between the edge of the arc-shaped blocking wall 103 and the second arc-shaped side wall, and the gap constitutes the arc-shaped opening 104; Figure 2 、 Figure 7 As shown, the second curved side wall and the locking limit portion 102 are recessed to form a recessed portion 105. The width of the recessed portion 105 is slightly larger than the width of the locking rod 31 to accommodate the locking rod 31. A second limiting step suitable for limiting the position of the locking rod 31 is formed between the recessed portion 105 and the main portion of the second curved side wall. The setting of the recessed portion 105 can stably maintain the locking rod assembly 3 in the locked position, and cooperate with the limiting recessed portion 1031 to limit the locking rod assembly 3, effectively avoiding the phenomenon that the locking rod assembly 3 rotates by itself in some unexpected situations, resulting in locking failure, and further improving the reliability and safety of the position locking of the pot cover assembly 2 and the pot body assembly 1.

[0050] Optionally, the second limiting step is an arc-shaped step with a smooth transition connection. Such a design allows the user to rotate the lock rod assembly 3 from the locked position to the unlocked position, and it can transition more smoothly from the locking limit portion 102 to the arc-shaped opening 104 along the arc-shaped second limiting step, and then move along the arc-shaped opening 104 to the avoidance opening portion 101, without getting stuck.

[0051] Optionally, combined Figures 6 to 8 The locking rod assembly 3 also includes an operating handle 32 and a connecting shaft 33. The operating handle 32 is located outside the pot lid assembly 2. The pot lid assembly 2 is provided with a shaft hole that matches the connecting shaft 33. One end of the connecting shaft 33 is fixedly connected to the operating handle 32, and the other end extends through the shaft hole into the pot lid assembly 2 and connects to the upper end of the locking rod 31. The provision of the operating handle 32 facilitates the user to manually lock or unlock the pot lid assembly 2, providing a certain degree of convenience for the user to open and close the lid.

[0052] Specifically, the operating handle 32 and the connecting shaft 33 can be connected and fixed by means of threads, welding, or pins. The locking rod 31 can also be connected and fixed by means of threads or pins. After the operating handle 32 and the connecting shaft 33 are assembled, they are installed in the corresponding position of the cover 21, and then the connecting shaft 33 is connected and fixed to the locking rod 31 below.

[0053] Furthermore, in this embodiment, the locking rod body is an L-shaped rod structure, including a horizontal rod section and a vertical rod section that are integrally arranged, wherein the end of the horizontal rod section is fixedly connected to the lower end of the connecting shaft 33, and the lower end of the vertical rod extends out of the pot cover assembly 2 and extends into the locking groove 10.

[0054] Optionally, combined Figure 4 、 Figure 8 and Figure 9 As shown, the pot cover assembly 2 includes a surface cover 21 and an inner cover 22 arranged on the inner circumference of the surface cover 21. An installation space for accommodating a locking rod body is formed between the surface cover 21 and the inner cover 22. A rotating shaft hole is provided on the surface cover 21, and an arc-shaped avoidance groove 221 is provided on the inner cover 22 for avoiding the movement of the locking rod body. The lower end of the locking rod body extends out of the surface cover 21 through the arc-shaped avoidance groove 221 and folds outward to form a locking portion 311. The locking portion 311 is a horizontally bent structure formed by folding outward horizontally at the lower end of the locking rod body. The locking portion 311 extends from the avoidance opening 101 into the locking groove 10, moves along the locking groove 10 to the locking limit portion 102, and is hooked below the arc-shaped blocking wall 103 to achieve locking of the pot cover assembly 2 and the pot body assembly 1.

[0055] Furthermore, the opening size of the avoidance opening portion 101 is slightly larger than the cross-sectional size of the locking portion 311, so that the locking portion 311 can enter the locking groove 10 from the avoidance opening portion 101, and the opening spacing of the arc-shaped opening 104 is greater than the thickness of the locking rod body and smaller than the length of the locking portion 311. Such a design can ensure that the locking rod 31 can move freely along the arc-shaped opening 104, and at the same time can ensure that when the locking rod 31 moves along the arc-shaped opening 104, the locking portion 311 will not escape from the locking groove 10 through the arc-shaped opening 104.

[0056] After the pot lid assembly 2 is covered on the pot body assembly 1, the locking portion 311 of the locking rod assembly 3 is suitable for entering the locking groove 10 from the avoidance opening 101 and moving along the locking groove 10 to a locking position that abuts and limits the locking limit portion 102; after cooking is completed, the locking rod assembly 3 is suitable for rotating to the unlocking position located at the avoidance opening 101, and the locking portion 311 is disengaged from the locking groove 10 to achieve unlocking of the pot lid assembly 2 and the pot body assembly 1.

[0057] Preferably, in this embodiment, the avoidance opening 101 is located at the left end position of the locking groove 10, and the avoidance opening 101 is located at the right end position of the locking groove 10, that is, the locking rod assembly 3 is rotated right to lock the pot lid assembly 2 and the pot body assembly 1, and the locking rod assembly 3 is rotated left to unlock the pot lid assembly 2 and the pot body assembly 1. The design of rotating right to lock and rotating left to unlock conforms to people's operating habits.

[0058] Optionally, combined Figure 1 、 Figures 3 to 5 As shown, the concave-convex positioning structure includes: a first concave-convex positioning structure 231 and a second concave-convex positioning structure 121. The first concave-convex positioning structure 231 is arranged on the bottom wall of the pot cover assembly 2; the second concave-convex positioning structure 121 is arranged on the top wall of the pot body assembly 1, and is suitable for cooperating with the first concave-convex positioning structure 231 in a concave-convex matching manner to achieve rapid plug-in positioning of the pot cover assembly 2 and the pot body assembly 1.

[0059] In the above scheme, the pot cover assembly 2 and the pot body assembly 1 are positioned by means of concave-convex matching. The positioning method is simple and efficient, and the positioning process is convenient and fast. It can effectively ensure that after the pot cover assembly 2 is closed on the pot body assembly 1, the locking rod assembly 3 can be accurately docked with the avoidance opening 101 of the locking groove 10, thereby reducing the difficulty of opening and closing the cover.

[0060] Optionally, the pot cover assembly 2 includes a steel cover 23 located at the bottom, the steel cover 23 is arranged on the inner periphery of the surface cover 21, the steel cover 23 is located below the surface cover 21, and the inner cover 22 is an annular structure connected between the outer peripheral edge of the steel cover 23 and the bottom edge of the surface cover 21, and the surface cover 21 can cover the steel cover 23 and the surface cover 21. The surface cover 21, the steel cover 23, and the inner cover 22 form a closed chamber, and the locking rod 31 of the locking rod assembly 3 is located in the chamber. The first concave-convex positioning structure 231 is a raised structure fixedly provided on the lower surface of the steel cover 23. The pot body assembly 1 includes an outer pot 12, and the second concave-convex positioning structure 121 is a groove structure provided on the pot edge of the outer pot 12 corresponding to the raised structure.

[0061] Specifically, the raised structure is a protruding column or rib structure integrally formed or welded to the lower surface of the steel lid 23. The outer pot 12 is made of metal. The circumferential edge of the outer pot 12 is horizontally extended outward to form the pot rim of the outer pot 12. The upper surface of the pot rim is concave downward to form a groove structure. The key to opening and closing the lid of the pressure cooking device provided in this embodiment is to ensure that the first concave-convex positioning structure 231 of the pot lid assembly 2 and the second concave-convex positioning structure 121 of the pot body assembly 1 are installed in the correct corresponding positions, thereby ensuring that the locking rod assembly 3 and the avoidance opening 101 of the locking groove 10 are accurately aligned.

[0062] Optionally, there are multiple groups of concave-convex positioning structures, which are arranged at intervals along the circumferential direction on the pot cover assembly 2 and the pot body assembly 1; by setting up multiple groups of concave-convex positioning structures, while achieving effective positioning of the pot cover assembly 2 and the pot body assembly 1, rotation between the two can also be prevented, thereby ensuring that the locking rod assembly 3 can be accurately aligned with the locking groove 10, thereby improving the stability and reliability of the cooperation between the pot cover assembly 2 and the pot body assembly 1.

[0063] Preferably, there are two sets of concave-convex positioning structures, which are symmetrically arranged on both sides of the pot cover assembly 2 and the pot body assembly 1. By setting the two sets of concave-convex positioning structures, that is, two first concave-convex positioning structures 231 are symmetrically arranged on the steel cover 23, and two second concave-convex positioning structures 121 are symmetrically arranged on the outer pot 12, the two sets of concave-convex positioning structures can effectively ensure the positioning effect of the pot cover assembly 2 and the pot body assembly 1 to prevent rotation between the two, and can also simplify the structure of the entire cooking appliance and save production costs.

[0064] Optionally, the first concave-convex positioning structure 231 is a positioning rib with a cross-shaped cross section, and the second concave-convex positioning structure 121 is a positioning groove with a cross-shaped cross section. Compared with conventional cylindrical positioning posts, the cross-shaped positioning rib has a better positioning effect, and the pot lid assembly 2 is less likely to rotate accidentally, and is more stable and reliable.

[0065] Optionally, in this embodiment, the width of the positioning groove is larger than the width of a finger. Such a design makes it convenient for the user to clean the dirt accumulated in the positioning groove.

[0066] Of course, in this embodiment, during the cooking process, dirt will generally not be discharged into the positioning groove of the outer pot 12. Even if dirt does occur, it can be easily wiped off with a rag. Since the exhaust structure is generally located inside the pot lid assembly 2, food residue and dirt are more likely to accumulate on the pot lid assembly 2, and cleaning the inward-turning teeth on the pot lid assembly 2 is more difficult. However, the positioning ribs provided in the pot lid assembly 2 of the present application are easier to clean than the existing inward-turning teeth structure and do not cause scratches on the user's hands during cleaning as in the prior art.

[0067] In addition, the positioning rib and positioning groove structure in this embodiment are easier to process than the inward-turned buckle teeth and outward-turned buckle teeth in the prior art, thereby reducing costs.

[0068] In this embodiment, by aligning the positioning ribs on the pot lid and the positioning grooves around the mouth of the outer pot 12, when closing the pot lid, the positioning ribs and the positioning grooves are aligned. Once the pot lid assembly 2 continues to move downward to a position where it abuts against the pot body assembly 1 and cannot move further, the locking portion 311 of the locking rod assembly 3 is aligned with the avoidance opening 101 and is lower than the arcuate blocking wall 103. At this point, the locking rod assembly 3 is rotated clockwise to the position of the locking stop 102. A click is heard, indicating that the locking rod assembly 3 is locked in place, completing the lid closing operation and allowing the cooking process to begin. This is simple and convenient operation. The coordination between the positioning ribs and the positioning grooves, as well as the coordination between the locking rod assembly 3 and the locking groove 10, provides a dual protection mechanism, ensuring that the lid is properly closed. After the locking rod assembly 3 is rotated clockwise to the locked position, the locking portion 311 of the locking rod assembly 3 is restrained by the arcuate blocking wall 103 of the locking groove 10 on the support ring 11, ensuring that the pot lid does not float when pressure is applied. When opening the lid, it is necessary to wait for the pressure to be released, rotate the locking rod assembly 3 to the left, and then grasp the handle above the surface cover 21 to move the pot lid assembly 2 upward until it is separated from the pot body assembly 1, and the lid opening action is completed.

[0069] In this embodiment, the steps for assembling the pressure cooking apparatus and opening and closing the lid are as follows:

[0070] First, assemble the pot lid, top cover 21, inner cover 22, and other parts to form the pot lid assembly 2. Then, assemble the cover shell 13, outer pot 12, support ring 11, and base to form the pot body assembly 1. When closing the pot lid, align the first concave-convex positioning structure 231 of the steel lid 23 with the second concave-convex positioning structure 121 of the outer pot 12. After the pot lid assembly 2 moves downward to a position where it abuts against the pot body assembly 1 and cannot move further in either axial or circumferential directions, rotate the locking rod assembly 3 on the pot lid assembly 2 clockwise until it clicks. This completes the pot lid closing operation. After rotating clockwise to the preset locked position, the locking rod assembly 3 is restrained by the locking groove 10 on the support ring 11, thereby ensuring that the pot lid assembly 2 does not float when pressure is applied. After the pressure is released, the lid is opened by rotating the locking rod assembly 3 to the left to the unlocking position avoiding the opening 101, and then grasping the handle above the pot lid assembly 2 and moving the pot lid assembly 2 upward until the pot lid assembly 2 is out of contact with the pot body assembly 1, thus completing the lid opening action.

[0071] In this embodiment, the locking rod 31 adopts a plate-shaped metal spring structure. When the locking rod 31 moves from the arc-shaped opening 104 to the locking limit portion 102, when the locking rod 31 moves into position, due to the design of the limit recess 1031, the locking rod 31 will be released into the limit recess 1031, so it will produce a clicking sound between the first limit step formed by the limit recess 1031.

[0072] The lid assembly 2 and the pot body assembly 1 of the pressure cooking device provided in this embodiment adopt the upper and lower concave and convex positioning structure buckling + locking rod assembly 3 to replace the rotating opening and closing method of the background art, making the opening and closing operation of the pressure cooking device more convenient and quick, and easy to clean, effectively solving the problem of difficult cleaning of the existing pressure cooker and the problem of complicated and difficult opening and closing operation of the lid.

[0073] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pressure cooking device, characterized in that: include: Pot assembly (1); A pot cover assembly (2) is adapted to be quickly aligned and covered on the pot body assembly (1) through the concave-convex positioning structure; A locking rod assembly (3) is rotatably arranged on the pot cover assembly (2); a locking groove (10) adapted to cooperate with the locking rod assembly (3) is formed on the pot body assembly (1); the locking groove (10) has an avoidance opening portion (101) and a locking limit portion (102); The avoidance opening (101) allows the locking rod assembly (3) to enter or escape from the locking groove (10), the locking limit portion (102) is suitable for cooperating with the locking rod assembly (3) to achieve locking of the pot cover assembly (2) and the pot body assembly (1), and the locking rod assembly (3) is suitable for rotating between a locking position cooperating with the locking limit portion (102) and an unlocking position cooperating with the avoidance opening (101); The pot body assembly (1) comprises: A support ring (11), wherein the locking groove (10) comprises an arcuate groove formed by the inward concave top wall of the support ring (11) and capable of allowing the locking rod assembly (3) to move therein, and an arcuate blocking wall (103) fixedly arranged on one side of the top of the arcuate groove; One side edge of the arc-shaped blocking wall (103) is fixedly connected to the arc-shaped groove, and the other side edge is spaced apart from the arc-shaped groove to form an arc-shaped opening (104) that can prevent the locking rod assembly (3) from moving; An opening is provided between one end of the arc-shaped blocking wall (103) and the arc-shaped groove to form the avoidance opening portion (101), and the other end is closed and connected to the arc-shaped groove to form the locking limit portion (102).

2. The pressure cooking device according to claim 1, wherein One side edge of the arc-shaped blocking wall (103) close to the locking limit portion (102) is concavely arranged to form a limiting recess (1031) capable of accommodating and limiting the locking rod assembly (3).

3. The pressure cooking appliance according to claim 1, wherein The locking rod assembly (3) comprises a locking rod (31), and the locking rod (31) comprises: A locking rod body adapted to move along the path of the arc-shaped opening (104); The locking portion (311) is fixedly arranged at the lower end of the locking rod body and is adapted to extend from the avoidance opening (101) into the locking groove (10) after the pot cover assembly (2) and the pot body assembly (1) are closed, and can move along the locking groove (10) to a locking position where it blocks and cooperates with the locking limit portion (102).

4. The pressure cooking appliance according to claim 3, wherein The locking rod assembly (3) further comprises: An operating handle (32) is provided on the outside of the pot cover assembly (2); A connecting shaft (33) is provided on the pot cover assembly (2) with a shaft hole that matches the connecting shaft (33). One end of the connecting shaft (33) is fixedly connected to the operating handle (32), and the other end extends from the shaft hole into the pot cover assembly (2) and is connected to the upper end of the locking rod (31).

5. The pressure cooking device according to claim 4, characterized in that The pot cover assembly (2) comprises a surface cover (21) and an inner cover (22) arranged on the inner circumference of the surface cover (21), wherein an installation space capable of accommodating the locking rod body is formed between the surface cover (21) and the inner cover (22); The rotating shaft hole is provided on the surface cover (21), and the inner cover (22) is provided with an arc-shaped avoidance groove (221) for avoiding the movement of the locking rod body. The lower end of the locking rod body extends out of the surface cover (21) through the arc-shaped avoidance groove (221) and folds outward to extend to form the locking portion (311).

6. The pressure cooking device according to any one of claims 1 to 5, characterized in that: The concave-convex positioning structure includes: A first concave-convex positioning structure (231) is provided on the bottom wall of the pot cover assembly (2); The second concave-convex positioning structure (121) is arranged on the top wall of the pot body assembly (1) and is adapted to cooperate with the first concave-convex positioning structure (231) in a concave-convex manner to achieve rapid plug-in positioning of the pot cover assembly (2) and the pot body assembly (1).

7. The pressure cooking appliance according to claim 6, wherein The pot cover assembly (2) comprises a steel cover (23) located at the bottom, and the first concave-convex positioning structure (231) is a convex structure fixedly arranged on the lower surface of the steel cover (23); The pot body assembly (1) comprises an outer pot (12), and the second concave-convex positioning structure (121) is a groove structure arranged on the pot edge of the outer pot (12) corresponding to the convex structure.

8. The pressure cooking appliance according to claim 6, wherein The concave-convex positioning structures include multiple groups, and the multiple groups of concave-convex positioning structures are arranged at intervals along the circumferential direction on the pot cover assembly (2) and the pot body assembly (1).

9. The pressure cooking appliance according to claim 6, wherein The first concave-convex positioning structure (231) is a positioning rib with a cross-shaped cross section, and the second concave-convex positioning structure (121) is a positioning groove with a cross-shaped cross section.

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