Lid assembly and cooking appliance having the same

Abstract

The application provides a cover assembly and a cooking utensil with the same, wherein the cover assembly is arranged on a pot body, and the cover assembly comprises a cover body, a locking mechanism movably arranged on the cover body and having a locking state of locking the pot body and an unlocking state of unlocking the pot body, and a transmission mechanism comprising a sliding plate movably arranged along the front-back direction of the cover body, the sliding plate being capable of driving the locking mechanism to switch between the locking state and the unlocking state when the sliding plate moves, wherein the sliding plate is provided with a sliding groove arranged obliquely relative to the front-back direction of the cover body, the locking mechanism is provided with a transmission column sliding along the sliding groove, and the transmission mechanism further comprises a stopper, the stopper being in stopper cooperation with the transmission column when the locking mechanism is in the locking state and the locking mechanism is in a floating position. The technical scheme of the application can solve the problem of difficulty in opening the cover in the related art.

Description

Technical Field

[0001] This invention relates to the field of small household appliances, and more specifically, to a top cover assembly and a cooking appliance having the same. Background Technology

[0002] In related technologies, cooking appliances include a pot body and a lid assembly that can be opened and closed onto the pot body. Due to the pressure generated during cooking, to improve safety, the lid assembly and pot body need to be locked together; therefore, a clamping structure is provided on the lid assembly. The clamping structure is movable and has a locked position and an unlocked position. When the clamping structure is in the locked state, the lid assembly and pot body are locked together; when the clamping structure is in the unlocked state, the lid assembly and pot body are separable. In addition to the clamping structure, a latching mechanism is also provided between the pot body and the lid assembly, including a latching platform on the lid and a latch on the pot body.

[0003] Chinese utility model patent application number 202221673921.0 provides a cooking appliance with a lid-opening button, a drive lever, a transmission lever, a transmission plate, and a clamping structure. By pressing the lid-opening button, the button applies force to the drive lever, causing the hook of the drive lever to separate from the lid's locking mechanism. The hook of the drive lever no longer restricts the transmission lever, allowing the transmission rod to move forward. The clamping structure then switches to the unlocked state, achieving dual unlocking with just the press of the lid-opening button, simplifying user operation.

[0004] However, the above-mentioned patented solutions may have problems such as difficulty in opening the lid or even inability to open the lid in actual use. Summary of the Invention

[0005] The main objective of this invention is to provide a lid assembly and a cooking appliance having the same, in order to solve the problem of difficulty in opening the lid in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a lid assembly is provided, which is disposed on a pot body. The lid assembly includes: a lid body; a locking mechanism, which is movably disposed on the lid body and has a locked state for locking the pot body and an unlocked state for unlocking the pot body; and a transmission mechanism, including a sliding plate movably disposed along the front-rear direction of the lid body, which can drive the locking mechanism to switch between the locked state and the unlocked state when the sliding plate moves; wherein, the sliding plate is provided with a groove inclined relative to the front-rear direction of the lid body, the locking mechanism has a transmission column that slides along the groove, and the transmission mechanism further includes a stop member, which engages with the transmission column when the locking mechanism is in the locked state and in the floating position.

[0007] According to the technical solution of this invention, the lid assembly includes a lid body, a locking mechanism, and a transmission mechanism. The locking mechanism has a locked state for locking the pot body and an unlocked state for unlocking the pot body. When the locking mechanism is in the locked state, the cooking appliance can perform pressure cooking. The transmission mechanism includes a movably disposed sliding plate with a sliding groove inclined relative to the front-rear direction of the lid body. The locking mechanism has a transmission column that slides along the sliding groove. When the sliding plate moves, the engagement between the sliding groove and the transmission column can drive the locking mechanism to switch between the locked and unlocked states. In the technical solution of this application, the transmission mechanism also includes a stop member. When the locking mechanism is in the locked state and in the floating position, the stop member engages with the transmission column. During pressure cooking, the pot body is in a pressurized state, and the locking mechanism is in the floating position. At this time, the stop member can engage with the transmission column of the locking mechanism. In this way, the stop member can restrict the movement of the transmission column, thereby preventing deformation of the locking mechanism. In related technologies, when the pot body is pressurized, deformation of the locking mechanism leads to difficulty in opening the lid. Because the technical solution of this application can effectively prevent the deformation of the locking mechanism, it can effectively solve the problem of difficulty in opening the cover.

[0008] Furthermore, when the locking mechanism is in the unlocked state and in the floating position, the stop engages with the transmission column. When the lid assembly is closed while hot, a large amount of steam inside the pot instantly generates pressure, causing the locking mechanism to move upwards to the floating position. At this time, the vertical gap between the locking mechanism and the pot body decreases. The stop restricts the movement of the transmission column, thereby restricting the movement of the locking mechanism and preventing it from moving in this state, which could lead to excessive friction between the locking mechanism and the pot body, or jamming due to contact between them.

[0009] Furthermore, the stop is located above the slide groove, dividing the slide groove into a first and a second slot on either side of the stop, and a third slot below the stop. The third slot connects the first and second slots. When the locking mechanism is in the locked state, the drive column is located in the first slot; when the locking mechanism is in the unlocked state, the drive column is located in the second slot. The stop has a simple structure. When the locking mechanism is in the locked state and in the upward position, the stop can limit the drive column in the first slot. When the locking mechanism is in the unlocked state and in the upward position, the stop can limit the drive column in the second slot. When the locking mechanism is in the downward position, the drive column can move between the first and second slots using the third slot, thereby switching between the locked and unlocked states.

[0010] Furthermore, the distance between the end of the first groove segment furthest from the stop and the stop is W1, the distance between the end of the second groove segment furthest from the stop and the stop is W2, and the width of the groove is W3, where W1 > W3 and W2 > W3. The width W3 of the groove is greater than or equal to the diameter of the transmission column, and the distances W1 and W2 are both greater than W3, so that when the locking mechanism moves upward, the transmission column can smoothly pass into the first and second groove segments.

[0011] Furthermore, the stop is a strip plate, with both ends protruding from the groove and connected to the slide plate. This structure facilitates the assembly of the strip plate onto the slide plate and is easy to manufacture.

[0012] Furthermore, the stop is a one-piece plate, which is integrally molded with the sliding plate. The above structure is simple and easy to process and mold.

[0013] Furthermore, the upper cover assembly also includes a pressure-bearing cover located below the locking mechanism. The pressure-bearing cover has a stop-open float, and the sliding plate has a stop-open plate. When the stop-open float rises, it restricts the movement of the stop-open plate. This structure, by placing the stop-open plate on the sliding plate, restricts the movement of the stop-open float when it rises, thereby restricting the movement of the sliding plate. This prevents the sliding plate from driving the locking mechanism via the transmission column, thus preventing the locking mechanism from opening when pressure exists inside the pot, ensuring safe operation. During the pressure cooking process, the locking mechanism is in the upward position, and the stop restricts the movement of the transmission column, preventing deformation of the locking mechanism. In this way, the locking mechanism will not cause the sliding plate to move due to deformation, avoiding the sliding plate moving and causing the stop-open plate to press against the stop-open float, thus preventing the stop-open float from being pressed against and causing air leakage inside the pot.

[0014] Furthermore, when the locking mechanism is in the lowered position, there is a vertical gap between the transmission column and the stop. This gap ensures smoother movement of the transmission column within the slide groove and avoids interference or friction between the transmission column and the stop.

[0015] Furthermore, the locking mechanism includes a mounting plate and a clamp mounted on the mounting plate, with a transmission column mounted on the mounting plate. This structure ensures effective locking of the locking mechanism and enhances safety during use.

[0016] According to another aspect of the present invention, a cooking appliance is provided, comprising a pot body and a lid assembly disposed on the pot body, the lid assembly being the aforementioned lid assembly. The aforementioned lid assembly effectively prevents deformation of the locking mechanism, thereby effectively solving the problem of difficulty in opening the lid. The cooking appliance having the aforementioned lid also solves the aforementioned problem. Attached Figure Description

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

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a cooking appliance according to the present invention is shown;

[0019] Figure 2a It shows Figure 1 A partial cross-sectional view of a cooking appliance with the lid assembly in the closed position and the latching mechanism in a double-locking position.

[0020] Figure 2b It shows Figure 1 A partial cross-sectional view of a cooking appliance with the lid assembly in the closed position and the latching mechanism in the individually engaged position.

[0021] Figure 2c It shows Figure 1 A partial sectional view of a cooking appliance with the lid assembly in the closed position and the latching mechanism in the unlocked position.

[0022] Figure 3a It shows Figure 1 A perspective view of the lid assembly of a cooking appliance in a cold and pressureless state with the locking mechanism in the unlocked state;

[0023] Figure 3b It shows Figure 3a Enlarged view of point A on the top cover assembly;

[0024] Figure 3c It shows Figure 3a Top view of the top cover component;

[0025] Figure 3d It shows Figure 3c Enlarged view of point B on the top cover assembly;

[0026] Figure 3e It shows Figure 1 A cross-sectional view of a cooking appliance in a cold and pressureless state with the locking mechanism in the unlocked state;

[0027] Figure 3f It shows Figure 3e Enlarged view of section C of the cooking utensil shown;

[0028] Figure 3g It shows Figure 3a A cross-sectional view of the upper cover component;

[0029] Figure 3h It shows Figure 3g Enlarged view of point D on the top cover assembly;

[0030] Figure 4a It shows Figure 1 A perspective view of the lid assembly of a cooking appliance in a cold and pressureless state with the locking mechanism in the locked state;

[0031] Figure 4b It shows Figure 4a Enlarged view of point E on the top cover assembly;

[0032] Figure 4c It shows Figure 4a Top view of the top cover component;

[0033] Figure 4d It shows Figure 1 A cross-sectional view of a cooking appliance in a cold and pressureless state with the locking mechanism in the locked state;

[0034] Figure 5a It shows Figure 1 A perspective view of a cooking appliance in a pressurized state with the locking mechanism in the locked state;

[0035] Figure 5b It shows Figure 5a Enlarged view of the cooking utensil at point F;

[0036] Figure 5c It shows Figure 5a A cross-sectional view of the cooking appliance at its first location;

[0037] Figure 5d It shows Figure 5a A cross-sectional view of the cooking appliance at the second position;

[0038] Figure 5e It shows Figure 5a A cross-sectional view of the cooking appliance at the third position;

[0039] Figure 6a It shows Figure 1 A 3D view of a cooking appliance in a heated state with the locking mechanism in the unlocked state;

[0040] Figure 6b It shows Figure 6a Enlarged view of the cooking utensil at point G;

[0041] Figure 6c It shows Figure 6a A cross-sectional view of a cooking utensil;

[0042] Figure 7a A three-dimensional structural schematic diagram of a sliding plate of the upper cover assembly according to the present invention is shown;

[0043] Figure 7b It shows Figure 7aA top view of an embodiment of the skateboard;

[0044] Figure 7c It shows Figure 7b A cross-sectional view along the MM direction;

[0045] Figure 7d It shows Figure 7a A bottom-view perspective view of an embodiment of the skateboard;

[0046] Figure 7e It shows Figure 7a A partial enlarged view of Embodiment 1 of the skateboard;

[0047] Figure 8a A three-dimensional structural schematic diagram of a second embodiment of the slide plate of the top cover assembly according to the present invention is shown;

[0048] Figure 8b It shows Figure 8a A top view of embodiment two of the skateboard;

[0049] Figure 8c It shows Figure 8b A cross-sectional view along the NN direction;

[0050] Figure 8d It shows Figure 8a An upward perspective view of the second embodiment of the skateboard.

[0051] The above figures include the following reference numerals:

[0052] 10. Pot body; 11. Inner pot; 111. Flared edge of the pot rim;

[0053] 20. Cover body; 21. Metal fixing plate; 22. Face cover;

[0054] 30. Locking mechanism; 31. Mounting plate; 311. Drive column; 32. Caliper;

[0055] 40. Buckling mechanism; 41. First hook; 42. Second hook; 44. First reset component; 45. Second reset component;

[0056] 50. Transmission mechanism; 51. Slide plate; 511. Stop plate; 52. Slide groove; 521. First groove section; 522. Second groove section; 531. Strip plate; 532. Integrated plate; 54. Rotating component;

[0057] 60. Pressure cover; 61. Stop float;

[0058] 70. Lid opening button. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0061] Regarding the cooking appliance provided in Chinese Utility Model Patent Application No. 202221673921.0, during use, when the caliper structure is in the locked position and pressure exists inside the pot, the lid assembly is prone to deformation, such as the middle of the lid assembly arching upwards. This deformation of the lid assembly causes the caliper structure to deform as well. When the caliper structure deforms, it drives the transmission plate to move. The movement of the transmission plate may cause the hook of the drive lever to separate from the lid's locking mechanism, which in turn causes the lid assembly to be driven upwards by the torsion spring at its rear. This results in friction between the caliper structure and the inner pot, making it difficult for the caliper structure to move. This difficulty in moving the caliper structure makes opening the lid difficult.

[0062] The technical solution of this application effectively solves the above-mentioned technical problems. The specific embodiments of the technical solution of this application will be described below with reference to the accompanying drawings.

[0063] like Figure 1 , Figures 2a to 2c as well as Figures 5a to 5eAs shown, the lid assembly of this embodiment is mounted on the pot body 10. The lid assembly includes: a lid body 20, a locking mechanism 30, and a transmission mechanism 50. The locking mechanism 30 is movably mounted on the lid body 20 and has a locked state for locking the pot body 10 and an unlocked state for unlocking the pot body 10. The transmission mechanism 50 includes a sliding plate 51 movably mounted along the front-rear direction of the lid body 20. When the sliding plate 51 moves, it can drive the locking mechanism 30 to switch between the locked state and the unlocked state. The sliding plate 51 is provided with a sliding groove 52 that is inclined relative to the front-rear direction of the lid body 20. The locking mechanism 30 has a transmission column 311 that slides along the sliding groove 52. The transmission mechanism 50 also includes a stop member. When the locking mechanism 30 is in the locked state and in the floating position, the stop member cooperates with the transmission column 311.

[0064] Applying the technical solution of this embodiment, the lid assembly includes a lid body 20, a locking mechanism 30, and a transmission mechanism 50. The locking mechanism 30 has a locked state for locking the pot body 10 and an unlocked state for unlocking the pot body 10. When the locking mechanism 30 is in the locked state, the cooking appliance can perform pressure cooking. The transmission mechanism 50 includes a movably disposed slide plate 51, on which a slide groove 52 is disposed at an inclination relative to the front-rear direction of the lid body 20. The locking mechanism 30 has a transmission column 311 that slides along the slide groove 52. When the slide plate 51 moves, the cooperation between the slide groove 52 and the transmission column 311 can drive the locking mechanism 30 to switch between the locked state and the unlocked state. In the technical solution of this application, the transmission mechanism 50 also includes a stop member. When the locking mechanism 30 is in the locked state and the locking mechanism 30 is in the floating position, the stop member cooperates with the transmission column 311. During pressure cooking, the pot body 10 is in a pressurized state, and the locking mechanism 30 is in the floating position (e.g., Figures 5a to 5e As shown in the diagram, at this time, the stop can cooperate with the stop of the transmission column 311 of the locking mechanism 30. In this way, the stop can restrict the movement of the transmission column 311, thereby preventing deformation of the locking mechanism 30. In related technologies, when pressure is applied to the inside of the pot, deformation of the locking mechanism leads to difficulty in opening the lid. Since the technical solution of this embodiment can effectively prevent deformation of the locking mechanism 30, it can effectively solve the problem of difficulty in opening the lid.

[0065] Figures 3a to 3h It shows Figure 1The figures show a perspective view, a top view, and a cross-sectional view of the lid assembly of a cooking appliance in a cold and pressureless state with the locking mechanism in the unlocked state. As can be seen from the figures, in the cold and pressureless state, with the locking mechanism in the unlocked state, the drive column 311 is in the lowered position, the stop is located above the drive column 311, and the stop does not restrict the movement of the drive column 311 within the slide groove 52. The slide groove 52 is gradually inclined inward (closer to the vertical axis of the lid body 20) in the front-rear direction. Since the stop does not restrict the movement of the drive column 311 within the slide groove 52, when the slide plate 51 slides forward, it drives the drive column 311 to move inward (closer to the vertical axis of the lid body 20) within the slide groove 52, causing the locking mechanism 30 to switch from the unlocked state to the locked state.

[0066] Figures 4a to 4d The figures show a perspective view, a top view, and a sectional view of the lid assembly of the cooking appliance in a cold and pressureless state with the locking mechanism in the locked state. As can be seen from the figures, in the cold and pressureless state, with the locking mechanism in the locked state, the drive column 311 is in the lowered position, the stop is located above the drive column 311, and the stop does not restrict the movement of the drive column 311 within the slide groove 52.

[0067] like Figure 3f As shown, the minimum clearance between the flange of the caliper 32 and the flange of the pot opening 111 is L1 when the caliper is cold and pressureless. Figure 4d As shown, the longitudinal distance between the flange of the caliper 32 and the flange of the pot opening 111 in the cold and pressureless states is L2.

[0068] like Figure 3g and Figure 3h As shown, when the locking mechanism 30 is in the lowered position, there is a vertical gap L6 between the transmission column 311 and the stop. Where 0 < L6 < L2. This gap L6 ensures smoother movement of the transmission column 311 within the slide groove 52, preventing interference or friction between the transmission column 311 and the stop. Figure 3d As shown, the distance between the transmission column 311 and the stop is L7, and L1-L7>0.

[0069] like Figure 1As shown, the locking mechanism 30 includes a mounting plate 31 and a clamp 32 mounted on the mounting plate 31, with a transmission column 311 mounted on the mounting plate 31. This structure ensures effective locking of the locking mechanism 30 and improves safety. The cover body 20 has a guide groove extending in its left-right direction, and the transmission column 311 passes through this guide groove, guiding the locking mechanism 30 to move along a preset trajectory (e.g., along the left-right direction of the cover body 20), making the locking and unlocking process smoother. The movement of the locking mechanism 30 along the preset trajectory also requires the cooperation of other mechanisms. Specifically, the cover assembly also includes operating components, such as a cover handle or cover button 70. These operating components can drive the transmission column 311 to move via the slide plate 51, thereby controlling the locking mechanism 30 to move between the locked and unlocked states. The slide plate 51 has a groove 52 that mates with the transmission column 311. The cooperation between the sliding groove 52 and the transmission column 311, as well as the cooperation between the guide groove and the transmission column 311, together enable the locking mechanism 30 to move along a preset trajectory. For details on the guiding and movement process of the locking mechanism, please refer to the relevant description in CN117322757A. In this embodiment, the pot body 10 includes an outer shell and an inner pot 11 disposed within the outer shell. The inner pot 11 is provided with a pot opening flange 111, and the clamp 32 engages below the pot opening flange 111 to achieve locking between the two.

[0070] like Figures 5a to 5e As shown, when the cooking appliance is in operation and pressure is applied to the cooking cavity, the locking mechanism 30 moves upward under the action of the pressure-bearing cover 60, causing the caliper 32 to engage with the flange 111 of the pot opening, and the top of the transmission column 311 protrudes upward from the stop. This stop prevents the caliper 32 from opening outward, keeping the sliding plate 51 stationary and thus preventing deformation of the locking mechanism 30. In this state, if the user attempts to open the cooking appliance, such as by pressing the lid-opening button 70, the transmission column 311 cannot move within the sliding groove 52, and the caliper 32 cannot open, providing enhanced safety by preventing the lid from opening under pressure. Furthermore, the caliper 32's inability to open outward indicates stronger locking strength and the ability to withstand greater pressure.

[0071] Because of the stop, the stop rod on the sliding plate and the stop float (also known as the stop valve) on the pressure cover, which are required in related technologies, can be eliminated. After the cooking cavity is pressurized, the top of the transmission column 311 protrudes upward from the stop, which prevents the cover from opening and provides protection against opening the cover under pressure.

[0072] like Figures 6a to 6cAs shown, in this embodiment, when the locking mechanism 30 is in the unlocked state and in the floating position, the stop and the transmission column 311 stop each other. When the lid assembly is closed in a hot state, a large amount of water vapor in the inner pot 11 will instantly generate pressure, causing the pressure-bearing cover 60 to move upward with the locking mechanism 30 to the floating position. At this time, the gap between the clamp 32 and the pot opening flange 111 in the vertical direction decreases. The top of the transmission column 311 protrudes upward from the stop. The stop can restrict the movement of the transmission column 311, thereby restricting the movement of the locking mechanism 30. At this time, there is a gap between the clamp 32 and the pot opening flange 111, and the clamp 32 and the pot opening flange 111 will not contact each other. The above structure avoids the locking mechanism 30 from moving in this state, the locking mechanism 30 from having large friction with the pot body, or the two from hitting each other and getting stuck.

[0073] Once the pressure inside the pot is depressurized, the pressure-bearing cover 60 and the clamp 32 move downwards under the action of gravity (or a spring is provided on the cover body). When there is a vertical gap L6 > 0 between the transmission column 311 and the stop, the transmission column 311 can move within the slide groove 52 to close the cover.

[0074] like Figure 7e As shown, the stop is located above the slide groove 52, dividing the slide groove 52 into a first groove segment 521 and a second groove segment 522 located on both sides of the stop, and a third groove segment located below the stop. The third groove segment connects the first groove segment 521 and the second groove segment 522. When the locking mechanism 30 is in the locked state, the transmission column 311 is located in the first groove segment 521; when the locking mechanism 30 is in the unlocked state, the transmission column 311 is located in the second groove segment 522. The stop has a simple structure. When the locking mechanism 30 is in the locked state and in the upward position, the stop can limit the transmission column 311 in the first groove segment 521; when the locking mechanism 30 is in the unlocked state and in the upward position, the stop can limit the transmission column 311 in the second groove segment 522. When the locking mechanism 30 is in the downward position, the transmission column 311 can move between the first groove segment 521 and the second groove segment 522 using the third groove segment, thereby achieving the switching between the locked and unlocked states.

[0075] like Figure 7e As shown, the distance between the end of the first groove segment 521 furthest from the stop and the stop is W1, the distance between the end of the second groove segment 522 furthest from the stop and the stop is W2, and the width of the slide groove 52 is W3, where W1 > W3 and W2 > W3. The width W3 of the slide groove 53 is greater than or equal to the diameter of the transmission column 311, and the distances W1 and W2 are both greater than W3, so that when the locking mechanism 30 moves upward, the transmission column 311 can smoothly pass into the first groove segment 521 and the second groove segment 522.

[0076] like Figures 7a to 7e As shown, in Embodiment 1 of the skateboard, the stop is a strip plate 531, with both ends of the strip plate 531 protruding from the slide groove 52 and connected to the skateboard 51. This structure facilitates the assembly of the strip plate 531 onto the skateboard 51 and is easy to manufacture. Both ends of the strip plate 531 can be connected to the skateboard 51 using fasteners. The strip plate 531 has a long strip structure, and its length direction is parallel to the sliding direction of the skateboard 51, which is also the front-back direction of the cover body 20.

[0077] like Figures 8a to 8d As shown, in Embodiment 2 of the skateboard, the stop is a one-piece plate 532, which is integrally formed with the skateboard 51. This structure is simple and easy to manufacture. The one-piece plate 532 has a parallelogram structure, which is easy to process by injection molding.

[0078] In other embodiments not shown in the figure, the stop member can also be a stop cylinder, which can be inserted into the stop cylinder when the transmission column moves upward, thereby limiting the transmission column through the stop cylinder.

[0079] like Figure 1 and Figure 5e As shown, the upper cover assembly also includes a pressure-bearing cover 60 disposed below the locking mechanism 30. The pressure-bearing cover 60 is equipped with a stop-opening float 61, and the slide plate 51 is equipped with a stop-opening plate 511. When the stop-opening float 61 floats upward, it can restrict the movement of the stop-opening plate 511. This structure, by placing the stop-opening plate 511 on the slide plate 51, restricts the movement of the stop-opening plate 511 when the stop-opening float 61 floats upward, thereby restricting the movement of the slide plate 51. This prevents the slide plate 51 from driving the locking mechanism 30 to move via the transmission column 311, thus preventing the locking mechanism 30 from opening when pressure exists within the pot body 10, ensuring safe use. During the pressure cooking process described above, the locking mechanism 30 is in the floating position, and the stop member can restrict the movement of the transmission column 311, thereby preventing deformation of the locking mechanism 30. In this way, the locking mechanism 30 will not cause the sliding plate 51 to move due to deformation, thus preventing the sliding plate 51 from moving and causing the stop plate 511 to hit the stop float 61. This will prevent the stop float 61 from being hit, which could lead to air leakage inside the inner pot 11 and cause the cooking appliance to be unable to pressurize.

[0080] like Figure 1 As shown, the cover body 20 is a liner, and the upper cover assembly also includes a metal fixing plate 21 disposed below the liner. The mounting plate 31 of the locking mechanism 30 is movably disposed on the metal fixing plate 21. The metal fixing plate 21 is buoyantly mounted below the liner via a connector, and a positioning structure is provided between the middle of the metal fixing plate 21 and the middle of the liner. The upper cover assembly also includes a faceplate 22 disposed above the liner. The metal fixing plate 21 can increase the strength of the liner.

[0081] According to another aspect of the present invention, a cooking appliance is provided, including a pot body 10 and a lid assembly disposed on the pot body 10, the lid assembly being the aforementioned lid assembly. The aforementioned lid assembly can effectively prevent deformation of the locking mechanism 30, thereby effectively solving the problem of difficulty in opening the lid. The cooking appliance having the aforementioned lid can also solve the aforementioned problem.

[0082] The following will combine Figure 1 and Figures 2a to 2c The process of closing and opening the lid of the cooking appliance in this embodiment will be described.

[0083] like Figure 1 As shown, the cooking appliance also includes a locking mechanism 40, which includes a first hook 41 and a second hook 42. The first hook 41 is rotatably mounted and has an individual rotation state and a linked rotation state; the second hook 42 is rotatably mounted and is disposed inside the first hook 41. When the first hook 41 is in the linked rotation state, the first hook 41 can drive the second hook 42 to rotate together.

[0084] The latching mechanism 40 is mounted on the pot body 10 and cooperates with the latching platform of the lid body 20 and the rotating component 54 of the transmission mechanism 50 to achieve double locking and unlocking between the pot body 10 and the lid assembly. Specifically, when the first hook 41 and the second hook 42 are stationary, the second hook 42 is engaged with the latching platform, and the first hook 41 abuts against the rotating component 54 and pulls the sliding plate 51 to keep the locking mechanism 30 in the locked state. At this time, the lid assembly and the pot body 10 are double locked, and the cooking appliance can perform pressure cooking in this state. During the process from double locking to unlocking, the first hook 41 drives the rotating component 54 to rotate, or the rotating component 54 drives the first hook 41 to rotate. At this time, the second hook 42 remains engaged with the latching platform. Then, the first hook 41 continues to rotate, and the first hook 41 drives the second hook 42 to move together, and the latching mechanism 40 switches to the unlocking state. When the latching mechanism 40 is in the unlocked state, the second hook 42 separates from the latching platform, and the locking mechanism 30 is in the unlocked state, unlocking the lid assembly and the pot body 10. At this time, the lid assembly switches from the closed state to the open state. In the prior art, for the scheme where the latching assembly, the latching platform, and the locking mechanism work together simultaneously, the lid assembly moves upward during the movement of the locking mechanism. This makes the locking mechanism susceptible to interference from other structures during the unlocking process, resulting in difficult operation and an unsmooth opening. During the process from double locking to unlocking, when the first hook 41 drives the rotating component 54 to rotate, or when the rotating component 54 drives the first hook 41 to rotate, the second hook 42 remains engaged with the latching platform. At this time, the position of the lid assembly relative to the pot body 10 remains unchanged. The rotating component 54 continues to rotate, causing the locking mechanism 30 to switch from the locked state to the unlocked state. In this way, the locking mechanism 30 will not interfere with other structures inside the lid assembly during movement, improving the smoothness of movement and making the lid assembly open or close more smoothly. Therefore, the technical solution of this embodiment can solve the problems of laborious opening operation and unsmooth opening in related technologies.

[0085] like Figure 1 As shown, the cooking appliance also includes a first reset member 44 disposed between the pot body 10 and the first hook 41, and a second reset member 45 disposed between the pot body 10 and the second hook 42. The first reset member 44 enables the first hook 41 to remain in a vertical position, and the second reset member 45 enables the second hook 42 to remain in a vertical position. When the lid assembly is in the closed position, the first hook 41 abuts against the rotating member 54 under the elastic force of the first reset member 44, and the second hook 42 is engaged with the locking platform under the elastic force of the second reset member 45. Both the first reset member 44 and the second reset member 45 are torsion springs. In this embodiment, the cooking appliance also includes a third reset member (not shown in the figure), which is a tension spring. The third reset member applies an elastic force to the sliding plate 51, causing the sliding plate 51 to move backward, so that the locking mechanism 30 remains in the unlocked position.

[0086] The process of closing the lid of the cooking appliance in this embodiment is as follows:

[0087] Phase 1: As Figure 2c As shown, the inclined surface of the lower surface of the locking platform at the front of the cover body 20 causes the first hook 41 to move, and at the same time drives the second hook 42 to move. At this time, the caliper 32 is in the fully open state, the transmission column 311 is in the initial position, and the first distance between the caliper 32 and the pot opening flange 111 is L3 (design gap, not shown in the figure).

[0088] Phase Two: As Figure 2b As shown, when the lid body 20 reaches the set position, the second hook 42 is reset and latched onto the latching plane of the latching plate under the action of the second reset member 45, so that the pot body 10 and the upper cover assembly are latched together, ensuring that the upper cover assembly will not pop open or shake. At this time, the first hook 41 does not touch the rotating member 54, the slide plate 51 does not move (the middle part of the rotating member 54 is hinged to the lid body 20, and the top of the rotating member 54 is movably connected to the slide plate 51, such as hinged), the caliper 32 is in the fully open state, and the transmission column 311 is in the initial position.

[0089] Furthermore, the first hook 41 is fastened to the fastening plane of the caliper, the first hook 41 touches the rotating part 54, and at the same time drives the slide plate 51 to move, forcing the caliper 32 to move, and the transmission column 311 moves to the second position;

[0090] When the transmission column 311 moves from the initial position to the second position, there is still a distance between the caliper 32 and the pot flange 111 to avoid contact between the caliper 32 and the pot flange 111. The second distance between the two is L4 (not shown in the figure), and L4 < L3.

[0091] Phase Three: As Figure 2a As shown, the first hook 41 contacts the bottom end of the rotating part 54, causing it to rotate and forcing the slide plate 51 to slide forward, so that the caliper 32 locks the pot opening flange 111, and the transmission column 311 is in the third position; the force F of the first reset part 44 is greater than the force f of the third reset part.

[0092] The process of opening the lid of the cooking appliance in this embodiment is as follows:

[0093] Phase 1: As Figure 2a As shown, the transmission column 311 is in the third position, and the caliper 32 is located below the flange 111 of the pot opening;

[0094] Phase Two: As Figure 2bAs shown, pushing the unlock and lid opening button 70 causes the first hook 41 to move, and at the same time the third reset component pulls the slide plate 51 to move the caliper 32. When the transmission column 311 moves to the second position, the first hook 41 contacts the second hook 42, and the second hook 42 is still engaged on the engagement plane. At this time, the caliper 32 is completely disengaged from the pot opening flange 111.

[0095] Phase Three: As Figure 2c As shown, the first hook 41 drives the second hook 42 to move, causing the second hook 42 to disengage from the fastening plane, and the upper cover assembly opens, completing the opening of the cover.

[0096] The cooking appliance in this application is a pressure cooker, but it can also be a rice cooker, slow cooker, frying machine, food processor, or other appliances with other functions.

[0097] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0098] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lid assembly, disposed on a pot body (10), characterized in that, The upper cover assembly includes: Cover body (20); The locking mechanism (30) is movably disposed on the lid body (20) and has a locked state for locking the pot body (10) and an unlocked state for unlocking the pot body (10); The transmission mechanism (50) includes a slide plate (51) movably disposed along the front-rear direction of the cover body (20), wherein the slide plate (51) can drive the locking mechanism (30) to switch between the locked state and the unlocked state when it moves; The sliding plate (51) is provided with a sliding groove (52) that is inclined relative to the front and rear direction of the cover body (20). The locking mechanism (30) has a transmission column (311) that slides along the sliding groove (52). The transmission mechanism (50) also includes a stop member. When the locking mechanism (30) is in the locked state and the locking mechanism (30) is in the floating position, the stop member and the transmission column (311) stop and cooperate.

2. The upper cover assembly according to claim 1, characterized in that, When the locking mechanism (30) is in the unlocked state and the locking mechanism (30) is in the floating position, the stop member cooperates with the transmission column (311) to stop.

3. The upper cover assembly according to claim 1, characterized in that, The stop is located above the slide groove (52) to divide the slide groove (52) into a first groove segment (521) and a second groove segment (522) located on both sides of the stop and a third groove segment located below the stop. The third groove segment connects the first groove segment (521) and the second groove segment (522). When the locking mechanism (30) is in the locked state, the transmission column (311) is located in the first groove (521). When the locking mechanism (30) is in the unlocked state, the transmission column (311) is located in the second groove (522).

4. The upper cover assembly according to claim 3, characterized in that, The distance between the end of the first groove segment (521) away from the stop and the stop is W1, the distance between the end of the second groove segment (522) away from the stop and the stop is W2, and the width of the slide groove (52) is W3, wherein W1 > W3 and W2 > W3.

5. The upper cover assembly according to any one of claims 1 to 4, characterized in that, The stop is a strip plate (531), the two ends of which protrude from the groove (52) and are connected to the slide plate (51).

6. The cover assembly according to any one of claims 1 to 4, characterized in that, The stop is an integral plate (532), which is integrally formed with the slide plate (51).

7. The upper cover assembly according to any one of claims 1 to 4, characterized in that, The upper cover assembly also includes a pressure cover (60) disposed below the locking mechanism (30), the pressure cover (60) is provided with a stop float (61), the slide plate (51) is provided with a stop plate (511), and the stop float (61) can restrict the movement of the stop plate (511) when it floats up.

8. The upper cover assembly according to any one of claims 1 to 4, characterized in that, When the locking mechanism (30) is in the lowered position, there is a vertical gap (L6) between the transmission column (311) and the stop member.

9. The cover assembly according to any one of claims 1 to 4, characterized in that, The locking mechanism (30) includes a mounting plate (31) and a clamp (32) disposed on the mounting plate (31), and the transmission column (311) is disposed on the mounting plate (31).

10. A cooking appliance, comprising a pot body (10) and a lid assembly disposed on the pot body (10), characterized in that, The cover assembly is the cover assembly according to any one of claims 1 to 9.

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