Cover and cooking utensils

Abstract

The present invention relates to a cooking utensil and a cover body, comprising: an upper cover; a heat preservation cover plate, which is detachably arranged on the side of the upper cover facing the inner pot in the pot body; and a driving assembly, a clamping mechanism and a pressure valve. The clamping mechanism switches between a closed state of clamping the heat preservation cover plate and the inner pot and an open state of allowing the heat preservation cover plate to be separated from the inner pot under the action of the driving assembly; the pressure valve switches between a pressure relief state of opening the exhaust port on the cover body and a pressure storage state of closing the exhaust port under the action of the driving assembly. When the clamping mechanism is in the closed state, the pressure valve can be in a pressure storage state to pressurize the inside of the cooking utensil after the cover is closed; that is, when the pressure inside the cooking utensil increases, the clamping mechanism clamps the heat preservation cover plate and the inner pot, locks the cover body, and prevents the cover body from opening abnormally when the pressure inside the pot increases. When the clamping mechanism is in the open state, the pressure valve can be in a pressure relief state, so that the cover can be opened after the pressure inside the pot body is relieved, thereby protecting the operator.

Description

Technical Field

[0001] The invention relates to the field of household appliances, in particular to a cover body and a cooking utensil. Background Art

[0002] Cooking appliances are used to process food, including rice cookers, pressure cookers, etc. Generally, cooking appliances include a pot body and a lid body, and the lid body can be opened and closed relative to the pot body. When the lid body is placed on the pot body, a cooking space is formed between the lid body and the pot body. When the cooking appliance is working, the pressure in the cooking space increases, which may cause the lid body to open abnormally. Summary of the invention

[0003] Based on this, it is necessary to provide a cover body that can prevent abnormal opening.

[0004] A cover body, comprising:

[0005] Upper cover;

[0006] a heat-insulating cover plate, detachably arranged on a side of the upper cover facing the inner pot in the pot body; and

[0007] A driving assembly, a clamping mechanism and a pressure valve, wherein the clamping mechanism switches between a closed state for clamping the heat-insulating cover plate and the inner pot and an open state for allowing the heat-insulating cover plate to be separated from the inner pot under the action of the driving assembly; the pressure valve switches between a pressure-releasing state for opening the exhaust port on the cover body and a pressure-accumulating state for closing the exhaust port under the action of the driving assembly;

[0008] Wherein, when the clamping mechanism is in the cover-closing state, the pressure valve may be in the pressure-accumulating state; when the clamping mechanism is in the cover-opening state, the pressure valve may be in the pressure-releasing state.

[0009] The cover is arranged on the pot of the cooking utensil. When the clamping mechanism is in the cover-closed state, the pressure valve can be in the pressure-accumulating state to pressurize the inside of the cooking utensil after the cover is closed; that is, when the pressure inside the cooking utensil increases, the clamping mechanism clamps the heat-insulating cover and the inner pot, locks the cover, and prevents the cover from opening abnormally when the pressure inside the pot increases. Moreover, when the clamping mechanism is in the cover-opened state, the pressure valve can be in the pressure-releasing state, so that the cover can be opened after the pressure inside the pot is released, to prevent the high-pressure airflow from flowing out of the pot when the cover is opened and burn the operator.

[0010] In one embodiment, the clamping mechanism includes a first claw and a second claw that move toward and away from each other, the first claw and the second claw move toward and away from each other and both clamp the thermal insulation cover and the inner pot, or the first claw and the second claw move away from each other and both separate from the thermal insulation cover and the inner pot.

[0011] In one embodiment, the driving assembly includes a driving member, a transmission member and a linkage member, the transmission member is arranged between the driving member and the linkage member, and the first claw and the second claw are respectively connected to the transmission member and the linkage member in a transmission manner;

[0012] Wherein, the transmission member moves back and forth under the drive of the driving member, and drives the linkage member to move back and forth in a direction opposite to the moving direction of the transmission member.

[0013] In one embodiment, the driving assembly further comprises a gear, wherein the gear is disposed between the transmission member and the linkage member, and the transmission member and the linkage member are respectively provided with a first rack and a second rack meshing with the gear for transmission;

[0014] Wherein, the first rack and the second rack extend in the same direction.

[0015] In one of the embodiments, a driving rack is further provided on the transmission member, the extension direction of the driving rack is parallel to the extension direction of the first rack, and a driving gear meshing with the driving rack is provided at the output end of the driving member.

[0016] In one of the embodiments, the driving assembly further comprises a pressure regulating member connected to the transmission member and moving synchronously, and the pressure regulating member drives the pressure valve to switch between the pressure storage state and the pressure release state when the pressure regulating member moves back and forth.

[0017] In one of the embodiments, under the drive of the drive assembly, the valve stem of the pressure valve and the clamping mechanism move asynchronously.

[0018] In one of the embodiments, the pressure regulating member includes an inclined surface and a horizontal surface distributed along its moving direction;

[0019] When the inclined surface cooperates and abuts against the valve stem of the pressure valve, the clamping mechanism remains stationary;

[0020] When the horizontal plane cooperates and abuts against the valve stem of the pressure valve, the clamping mechanism switches the working state.

[0021] In one of the embodiments, the transmission member includes a first linkage portion provided on the pressure regulating member, and the linkage member has a second linkage portion;

[0022] The first clamping claw and the second clamping claw are respectively provided with a first sliding groove and a second sliding groove, and the first linkage part and the second linkage part are respectively slidably disposed in the first sliding groove and the second sliding groove.

[0023] In one embodiment, the first sliding groove and the second sliding groove have the same length in the moving direction of the transmission member.

[0024] The present invention also provides a cooking utensil, comprising the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of a cooking appliance in one state according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the cooking appliance in another state;

[0027] Figure 3 for Figure 1 A schematic cross-sectional view of the cooking device in one direction;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the cooking appliance in another state;

[0029] Figure 5 for Figure 4 A schematic cross-sectional view of the cooking device in one direction;

[0030] Figure 6 for Figure 1 A partial cross-sectional schematic diagram of the cooking appliance shown;

[0031] Figure 7 for Figure 1 A schematic diagram of the structure of the transmission part and the pressure regulating part in the cooking appliance shown;

[0032] Figure 8 for Figure 1 A schematic diagram of the structure of a lock in the cooking utensil shown;

[0033] Fig. 9 for Figure 1 A schematic diagram of the structure of the guide rail in the cooking utensil shown;

[0034] Fig.10 for Figure 2 A schematic cross-sectional view of the cooking appliance shown;

[0035] Fig.11 for Figure 4 A schematic cross-sectional view of the cooking appliance in one direction;

[0036] Fig.12 for Figure 4 A schematic cross-sectional view of the cooking device in another direction;

[0037] Fig.13 for Figure 4A schematic cross-sectional view of the cooking device in another direction;

[0038] Fig.14 for Figure 1 A schematic cross-sectional view of the cooking device in another direction;

[0039] Fig.15 for Fig.14 A partial enlarged schematic diagram of the cooking appliance shown;

[0040] Fig.16 for Figure 1 A schematic diagram of the structure of the linkage components in the cooking appliance shown;

[0041] Fig.17 for Figure 2 A schematic diagram of a portion of the structure of the cooking appliance shown;

[0042] Fig.18 for Figure 1 A schematic diagram of the structure of the cooking appliance shown in another direction;

[0043] Fig.19 for Fig.18 A partial cross-sectional schematic diagram of the cooking appliance shown;

[0044] Fig. 20 For Fig.18 A schematic diagram of the structure of a lid opening tool used with a cooking utensil is shown. DETAILED DESCRIPTION

[0045] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] like Figure 1 and Figure 3As shown, a cooking utensil 200 is provided in one embodiment of the present invention, including a pot body 210 , an inner pot 220 sleeved in the pot body 210 , and a cover body 100 .

[0049] The cover body 100 includes an upper cover 10 and a heat-insulating cover plate 20 detachably disposed on the upper cover 10. The upper cover 10 and the pot body 210 can be opened and closed to open or close the pot body 210. When the upper cover 10 is closed, the heat-insulating cover plate 20 can be covered on the inner pot 220, and a cooking space is formed between the inner pot 220 to process food materials using the cooking space. In addition, the pot body 210 is provided with a cover opening button (not shown) and a cover closing assembly (not shown). The cover closing assembly is used to buckle the cover body 100 and the pot body 210. The cover opening button is used to drive the cover closing assembly to separate from the cover body 100, allowing the cover body 100 to be opened.

[0050] like Figure 1-Figure 5 As shown, the cover 100 further includes a driving assembly 30 and a locking mechanism 50 both disposed on the upper cover 10. The locking mechanism 50 includes a lock buckle 52. Under the action of the driving assembly 30, the lock buckle 52 switches between a buckled state with the fixing buckle 211 of the pot body 210 and a separated state with the fixing buckle 211. When the cooking utensil 200 is working, the pressure in the cooking space gradually increases, and the cover 100 has a movement tendency to open due to the pressure shock. The cover 100 and the pot body 210 can be locked by the locking mechanism 50 to prevent the pot body 210 from opening abnormally. In other words, the locking mechanism 50 provides secondary locking. When the cover closing assembly on the pot body 210 fails under the pressure shock, the locking mechanism 50 can also prevent the cover 100 from opening abnormally to prevent the operator from being burned by the high-pressure gas.

[0051] Optionally, the lock buckle 52 cooperates with the driving assembly 30 for transmission, and a hook 51 is provided on the lock buckle 52 , and the hook 51 can extend into the interior of the pot body 210 and engage with the fixing plate 211 .

[0052] The driving assembly 30 includes a driving member 32 and a transmission member 34 disposed between the driving member 32 and the lock buckle 52. The transmission member 34 reciprocates linearly along a first direction under the action of the driving member 32, and the lock buckle 52 switches between a buckled state and a disengaged state along a second direction intersecting the first direction under the drive of the transmission member 34. In this way, the lock buckle 52 is driven to move along the second direction by the transmission member 34 moving along the first direction, thereby realizing the switching of the working state of the lock buckle 52. At the same time, when the transmission member 34 moves along the first direction, it can drive other components to move along the first direction. In other words, after the driving member 32 drives the transmission member 34 to move along the first direction, the transmission member 34 can drive the lock buckle 52 to move along the second direction, and the transmission member 34 can also drive other components (such as the clamping mechanism 70 and the pressure regulating member 38 described later) to move along the first direction. Multiple components are driven by the same driving member 32, saving a driving source.

[0053] In some embodiments, the transmission member 34 is provided with a driving rack 35 extending along the first direction, and the output end of the driving member 32 is provided with a driving gear 321 meshing with the driving rack 35. When the output end of the driving member 32 drives the driving gear 321 to rotate, the driving rack 35 meshing with the driving gear 321 will slide along the extension direction of the driving rack 35, thereby driving the transmission member 34 to slide along the first direction.

[0054] like Figure 3 and Figure 6-Figure 8 As shown, specifically, a boss 341 is provided on the side of the transmission member 34 facing the lock buckle 52, which protrudes along the second direction, and a matching portion 522 is provided on the side of the lock buckle 52 facing the transmission member 34; when the lock buckle 52 is in a separated state, the boss 341 moves along the first direction to abut against the matching portion 522, and pushes the matching portion 522 and the lock buckle 52 to move along the second direction to disengage from the fixing buckle 211; when the lock buckle 52 is in a fastened state, the boss 341 moves along the second direction to separate from the matching portion 522, allowing the matching portion 522 and the lock buckle 52 to move along the second direction to fasten with the fixing buckle 211. This is equivalent to providing a boss 341 protruding along the second direction on the transmission member 34, and providing a matching portion 522 on the locking buckle 52, which is located on the moving path of the boss 341. When the boss 341 slides to abut against the matching portion 522, the matching portion 522 and the locking buckle 52 are pushed to move along the second direction, so that the locking buckle 52 moves away from the transmission member 34 along the second direction, and then moves in a direction away from the fixing buckle 211 in the pot body 210 until it is disengaged from the fixing buckle 211; when the boss 341 continues to move, the boss 341 will move to disengage from the matching portion 522, and the thrust exerted by the boss 341 on the locking buckle 52 in the second direction away from the transmission member 34 disappears, and the locking buckle 52 can be restored to the engaged state with the fixing buckle 211, thereby locking the cover body 100 and the pot body 210.

[0055] Furthermore, the lock buckle 52 is at least partially stacked on the transmission member 34, and a boss 341 is protrudingly provided on a side of the transmission member 34 facing the lock buckle 52, and a matching portion 522 that can abut against the boss 341 along the second direction is protrudingly provided on a side of the lock buckle 52 facing the transmission member 34. When the transmission member 34 moves along the first direction at the bottom of the lock buckle 52, the boss 341 on the transmission member 34 abuts against the matching portion 522 at the bottom of the lock buckle 52 along the second direction, pushing the lock buckle 52 to move along the second direction.

[0056] like Figure 1-Figure 4As shown, the locking mechanism 50 also includes a guide rail 54 and an elastic member 56. The guide rail 54 is extended along the second direction, the lock buckle 52 is slidably mounted on the guide rail 54, and the elastic member 56 abuts between the lock buckle 52 and the guide rail 54, and when the lock buckle 52 is in a separated state, the elastic potential energy is stored to drive the lock buckle 52 to switch to the locked position. When the protrusion on the transmission member 34 abuts against the matching portion 522 on the lock buckle 52, the lock buckle 52, pushed by the protrusion on the transmission member 34, moves away from the transmission member 34 in the second direction, and squeezes the elastic member 56 between the lock buckle 52 and the guide rail 54, so that the elastic member 56 stores elastic potential energy; when the protrusion on the transmission member 34 disengages from the matching portion 522 on the lock buckle 52, the lock buckle 52 is no longer subject to the thrust of the transmission member 34 along the second direction, and the lock buckle 52 will move in the direction close to the transmission member 34 driven by the elastic potential energy stored in the elastic member 56, and then move in the direction close to the fixing buckle 211 in the pot body 210 until it is engaged with the fixing buckle 211 and returns to the engaged state.

[0057] Specifically, the lock buckle 52 is provided with a slide groove 521 (such as Figure 2 The guide rail 54 has a guide portion 541 protruding from the slide groove 521 (as shown in FIG. Figure 2 and Fig. 9 As shown in FIG. 1 , the lock buckle 52 slides along the guide portion 541 in the second direction through the slide groove 521, and the elastic member 56 abuts between the guide portion 541 and the inner wall of the slide groove 521 along the second direction. After the slide groove 521 is provided on the lock buckle 52, the guide portion 541 of the guide rail 54 can extend into the slide groove 521, and the elastic member 56 can be installed between the inner wall of the slide groove 521 and the guide portion 541, and the lock buckle 52 is reset by the elastic member 56.

[0058] like Figure 1 and Figure 10-12 As shown, the cooking device 200 further includes a clamping mechanism 70 disposed on the upper cover 10. The clamping mechanism 70 switches between a closed state for clamping the inner pot 220 and the heat-insulating cover 20 and an open state for allowing the heat-insulating cover 20 to be separated from the inner pot 220 under the action of the driving assembly 30. When the cooking device 200 is working, the pressure in the cooking space increases, and the heat-insulating cover 20 is subjected to a relatively large air pressure. The heat-insulating cover 20 and the inner pot 220 are locked by the clamping mechanism 70 to prevent the cover body 100 from opening abnormally under the action of high pressure.

[0059] The clamping mechanism 70 includes a first clamping claw 72 and a second clamping claw 74 that move toward and away from each other. The first clamping claw 72 and the second clamping claw 74 move toward and away from each other and both clamp the heat preservation cover plate 20 and the inner pot 220, or the first clamping claw 72 and the second clamping claw 74 move toward and away from each other and both separate from the heat preservation cover plate 20 and the inner pot 220. The first clamping claw 72 and the second clamping claw 74 are relatively arranged on the upper cover 10. When the first clamping claw 72 and the second clamping claw 74 move toward and away from each other, the first clamping claw 72 and the second clamping claw 74 are respectively close to the edges of the heat preservation cover plate 20 and the inner pot 220, and the heat preservation cover plate 20 and the inner pot 220 can be clamped; when the first clamping claw 72 and the second clamping claw 74 move toward and away from each other, the first clamping claw 72 and the second clamping claw 74 are respectively away from the edges of the heat preservation cover plate 20 and the inner pot 220, and the heat preservation cover plate 20 and the inner pot 220 are allowed to separate.

[0060] Specifically in the embodiment, the first claw 72 and the second claw 74 are distributed along the first direction. When the transmission member 34 reciprocates linearly along the first direction under the action of the driving member 32, the first claw 72 and the second claw 74 can be driven to move closer to or farther from each other in the first direction.

[0061] like Figure 2 and Figure 14-15 As shown, further, the driving assembly 30 further includes a linkage member 36, the transmission member 34 is disposed between the driving member 32 and the linkage member 36, and the first claw 72 and the second claw 74 are respectively connected to the transmission member 34 and the linkage member 36 in a transmission manner; wherein the transmission member 34 is driven by the driving member 32 to reciprocate and drive the linkage member 36 to reciprocate in a direction opposite to the moving direction of the transmission member 34. When the driving member 32 drives the transmission member 34 to move in the first direction, the moving transmission member 34 can simultaneously drive the linkage member 36 to move in a direction opposite to the moving direction of the transmission member 34.

[0062] For example, in Fig.15 In the perspective shown, when the transmission member 34 moves to the left, it drives the linkage member 36 to move to the right; at the same time, when the first claw 72 moves to the left under the drive of the transmission member 34, the second claw 74 moves to the right under the drive of the linkage member 36, and the two move in a direction away from each other, and both are separated from the inner pot 220 and the insulation cover 20. When the transmission member 34 moves to the right, it drives the linkage member 36 to move to the left; at the same time, when the first claw 72 moves to the right under the drive of the transmission member 34, the second claw 74 moves to the left under the drive of the linkage member 36, and the two move in a direction close to each other, and both clamp the inner pot 220 and the insulation cover 20.

[0063] The driving assembly 30 further includes a linkage gear 37. The transmission member 34 and the linkage member 36 are stacked, and the linkage gear 37 is arranged between the transmission member 34 and the linkage member 36. The transmission member 34 and the linkage member 36 are provided with first racks 343 (such as the first rack 343) meshing with the linkage gear 37 on the two surfaces facing each other. Figure 7 ) and the second rack 361 (such as Fig. 9 As shown in the figure, it is equivalent to that the first rack 343 is meshed with one side of the linkage gear 37 for transmission, and the second rack 361 is meshed with the other side of the linkage gear 37 for transmission relative to the first rack 343. Moreover, the first rack 343 and the second rack 361 have the same extension direction, that is, the first rack 343 and the second rack 361 are both extended along the first direction. When the transmission member 34 moves away from the second claw 74 in the first direction, the first rack 343 also moves away from the second claw 74, and drives the linkage gear 37 to rotate at the same time, and then drives the second rack 361 and the linkage member 36 to move in the direction opposite to the moving direction of the transmission member 34 through the linkage gear 37, that is, drives the linkage member 36 to move away from the first claw 72, so that the first claw 72 and the second claw 74 can be driven to move away from each other. Similarly, when the transmission member 34 moves in the first direction toward the second claw 74, the linkage gear 37 drives the linkage member 36 to move toward the first claw 72, thereby driving the first claw 72 and the second claw 74 toward each other.

[0064] like Figure 1-5 As shown, in some embodiments, the lock buckle 52 is driven by the driving assembly 30 to switch between a locked state that maintains the clamping mechanism 70 in the closed state and an unlocked state that allows the clamping mechanism 70 to switch to the open state. When the clamping mechanism 70 is in the closed state, the lock buckle 52 locks the clamping mechanism 70; when the clamping mechanism 70 needs to switch to the open state, the lock buckle 52 allows the clamping mechanism 70 to move, allowing the open operation.

[0065] Specifically, when the lock buckle 52 is in the locked state, the first claw 72 and the second claw 74 are locked to prevent the first claw 72 and the second claw 74 from moving away from each other, so that the clamping mechanism 70 is maintained in the box cover state; when the lock buckle 52 is in the unlocked state, the lock on the first claw 72 and the second claw 74 is released, and the first claw 72 and the second claw 74 are allowed to move away from each other, allowing the clamping mechanism 70 to switch to the open cover state and perform the open cover operation.

[0066] Furthermore, the first locking part 721 and the second locking part 741 are respectively provided on the two surfaces facing each other of the first claw 72 and the second claw 74, and a slot 53 is provided on the lock buckle 52. When the clamping mechanism 70 is in the closed state, the first claw 72 and the second claw 74 move in the direction of approaching each other, and drive the first locking part 721 and the second locking part 741 to approach each other, and the first locking part 721 and the second locking part 741 are both embedded in the slot 53, and are respectively limitedly abutted with two inner walls of the slot 53 opposite to each other along the first direction, and the first locking part 721 and the second locking part 741 are locked in the slot 53 to prevent the first locking part 721 and the second locking part 741 from moving in the direction of separation, and the closed state of the clamping mechanism 70 is locked to prevent the clamping mechanism 70 from abnormally switching to the open state under the high pressure in the pot. When the clamping mechanism 70 is in the cover opening state, the card slot 53 disengages from the first locking portion 721 and the second locking portion 741, allowing the first locking portion 721 and the second locking portion 741 to move away from each other, thereby allowing the first claw 72 and the second claw 74 to move away from each other to perform the cover opening action.

[0067] Furthermore, the first claw 72 and the second claw 74 are stacked on the transmission member 34 and the linkage member 36 respectively, the transmission member 34 is in transmission connection with the driving member 32, and the lock buckle 52 is provided with a slot 53 at one end close to the driving member 32 along the second direction, and the opening of the slot 53 faces the first locking portion 721 and the second locking portion 741 in the closed state. Optionally, when the clamping mechanism 70 is in the closed state, the first locking portion 721 and the second locking portion 741 are in contact with each other, and the width of the slot 53 is equal to the total width of the first locking portion 721 and the second locking portion 741 in the first direction, and the first locking portion 721 and the second locking portion 741 can be embedded in the slot 53 in the first direction at an upper limit position.

[0068] The driving method of switching the lock buckle 52 between the locked state and the unlocked state is the same as the driving method of switching the lock buckle 52 between the engaged state and the separated state.

[0069] When the transmission member 34 moves back and forth in a first direction driven by the driving member 32, the lock buckle 52 switches between a locked state and an unlocked state along a second direction intersecting the first direction under the drive of the transmission member 34. The transmission method between the lock buckle 52 and the transmission member 34 is the same as described above, and the lock buckle 52 moves in the second direction through the contact and separation of the boss 341 protruding along the second direction of the transmission member 34 and the matching part 522 provided on the lock buckle 52, switching the matching state with the clamping mechanism 70, and then switching the lock buckle 52 between the locked state and the unlocked state.

[0070] Specifically, when the lock buckle 52 is in a locked state, the boss 341 moves along the first direction to separate from the matching portion 522, allowing the lock buckle 52 to move along the second direction toward the clamping mechanism 70 to lock the clamping mechanism 70; when the lock buckle 52 is in an unlocked state, the boss 341 moves along the first direction to abut against the matching portion 522, pushing the lock buckle 52 to move along the second direction away from the clamping mechanism 70 to release the lock of the clamping mechanism 70.

[0071] It should be noted that the lock buckle 52 can have a buckled state with the fixing buckle 211 in the pot body 210 and a separated state with the fixing buckle 211, and can lock the lid body 100 and the pot body 210. The lock buckle 52 can also have a locked state for locking the clamping mechanism 70 in the closed state and an unlocked state for allowing the clamping mechanism 70 to switch to the open state. The lock buckle 52 can lock the clamping mechanism 70 in the closed state to prevent accidental opening of the lid. The lock buckle 52 can also have a snap-on state and a locked state at the same time, and a separated state and an unlocked state at the same time, that is, the lock buckle 52 is snapped with the fixing buckle 211 to lock the cover body 100 and the pot body 210, and at the same time, the lock buckle 52 also clamps the clamping mechanism 70, so that the clamping mechanism 70 is locked in the closed cover state, preventing the clamping mechanism 70 from abnormally switching to the open cover state, and preventing the cover body 100 from abnormally opening. Such multiple locking covers ensure the reliability of the cooking utensil 200 during high-pressure operation; similarly, the lock buckle 52 releases the lock on the clamping mechanism 70, allowing the clamping mechanism 70 to switch to the open cover state, and at the same time, the lock buckle 52 is separated from the fixing buckle 211, allowing the cover body 100 to be opened.

[0072] Specifically in the embodiment, the lock buckle 52 is in the engaged state and the locked state at the same time, and is in the separated state and the unlocked state at the same time, that is, the lock buckle 52 cooperates with the clamping mechanism 70 and the fixing buckle 211 in the pot body 210.

[0073] Furthermore, the lock buckle 52 is provided with a hook 51 and a slot 53 at opposite ends along the second direction. When the hook 51 is engaged with the fixing buckle 211, the first locking portion 721 and the second locking portion 741 are embedded in the slot 53, so that the lock buckle 52 is engaged with the fixing buckle 211 and the first claw 72 and the second claw 74 are locked. When the hook 51 is separated from the fixing buckle 211, the slot 53 is separated from the first locking portion 721 and the second locking portion 741, so that the lock buckle 52 cancels the locking of the first claw 72 and the second claw 74 and is separated from the fixing buckle 211. In this way, the cover body 100 can be doubly locked behind the box cover by using only one component of the lock buckle 52.

[0074] Specifically in the embodiment, the lock buckle 52 includes a first lock buckle 521 and a second lock buckle 523, the first lock buckle 521 and the second lock buckle 523 are distributed along the second direction and are fixedly connected, the end of the first lock buckle 521 away from the second lock buckle 523 has a hook 51 that is engaged with the fixed plate 211 in the pot body 210, the end of the second lock buckle 523 away from the first lock buckle 521 is provided with a slot 53 with an opening facing away from the first lock buckle 521, and the first lock buckle 521 is provided with a slide slot 521 that allows the guide portion 541 of the guide rail 54 to extend into. It can be understood that the first lock buckle 521 and the second lock buckle 523 can also be provided as a whole, which is not limited here.

[0075] like Figure 1 and Figure 3 Specifically, when the protrusion 341 of the transmission member 34 moves to abut against the matching portion 522 of the lock buckle, the lock buckle 52 is pushed by the protrusion 341 to disengage from the fixing buckle 211, and the clamping mechanism 70 switches to the cover opening state, releasing the lock between the heat preservation cover plate 30 and the inner pot 220, allowing the cover body 100 to be opened relative to the pot body 210. Figure 2 and Figure 4-Figure 5 As shown, when the protrusion 341 of the transmission member moves to separate from the matching portion 522 of the lock buckle, the lock buckle 52 moves toward the direction close to the fixed buckle 211 under the action of the elastic member 56, and at the same time, the first claw 72 and the second claw 74 move toward each other until the first claw 72 and the second claw 74 move into place, the slot 53 on the lock buckle 52 can be aligned with the first locking portion 721 and the second locking portion 741 respectively provided on the first claw 72 and the second claw 74, and the lock buckle 52 continues to move under the action of the elastic member 56 until the first locking portion 721 and the second locking portion 741 are embedded in the slot 53, and the hook 51 of the lock buckle 52 is engaged with the fixed plate 211 to complete the closing process.

[0076] Optionally, the width of the lock buckle 52 in the first direction is greater than the maximum spacing in the first direction between the first clamping jaw 72 and the second clamping jaw 74. When the first clamping jaw 72 and the second clamping jaw 74 gradually move toward each other, the lock buckle 52 moves toward the first clamping jaw 72 and the second clamping jaw 74, and because the lock buckle 52 is relatively wide, it can abut against the first clamping jaw 72 and the second clamping jaw 74 that are spaced apart, preventing the lock buckle 52 from moving too much, until the first clamping jaw 72 and the second clamping jaw 74 move into place and the slot 53 of the lock buckle 52 corresponds to the first locking portion 721 and the second locking portion 741, allowing the lock buckle 52 to continue to move until the first locking portion and the second locking portion are embedded in the slot 53, completing the closing work of the clamping mechanism 70 and the locking work of the lock buckle 52.

[0077] In some embodiments, a floating gap is reserved between the heat preservation cover plate 20 and the upper cover 10 to allow the heat preservation cover plate 20 to float, and the clamping mechanism 70 in the closed state can float relative to the upper cover 10 under the push of the heat preservation cover plate 20. When the cooking appliance 200 is working, the driving assembly 30 drives the clamping mechanism 70 to switch from the open state to the closed state, and the heat preservation cover plate 20 clamped by the clamping mechanism 70 floats in the floating gap under the action of the high pressure in the pot, and at the same time pushes the clamping mechanism 70 to float, so that the floating of the heat preservation cover plate 20 is transmitted to the clamping mechanism 70, and the heat preservation cover plate 20 will not squeeze the upper cover 10 when floating, so as to prevent the upper cover 10 from being squeezed by the heat preservation cover plate 20 and deformed.

[0078] In addition, the lock buckle 52 floats synchronously with the insulation cover 20. When the clamping mechanism 70 floats up under the push of the insulation cover 20, the lock buckle 52 will also float up synchronously, thereby making the lock buckle 52 and the clamping mechanism 70 float synchronously. They can always cooperate with each other to prevent the clamping mechanism 70 from being misaligned with the lock buckle 52 after floating up, so that the lock buckle 52 always has a locking function on the floating clamping mechanism 70.

[0079] like Fig.13 As shown, further, the cover body 100 further includes a floating plate 60 and a push rod 62, the floating plate 60 is arranged between the upper cover 10 and the lock buckle 52, the upper cover 10 is arranged between the thermal insulation cover plate 20 and the floating plate 60, and the push rod 62 passes through the upper cover 10 and abuts between the thermal insulation cover plate 20 and the floating plate 60. When the thermal insulation cover plate 20 floats up, the push rod 62 is pushed by the thermal insulation cover plate 20 and pushes up the floating plate 60, so that the floating plate 60 floats with the floating of the thermal insulation cover plate 20, and then the lock buckle 52 arranged on the floating plate 60 floats synchronously with the thermal insulation cover plate 20 and the clamping mechanism 70.

[0080] Specifically, the upper cover 10 is provided with a through hole, the push rod 62 is inserted into the through hole, and one end of the push rod 62 close to the floating plate 60 is clamped on the upper cover 10, so that the push rod 62 can be floated and assembled with the upper cover 10. In addition, the floating plate 60 is provided with a push portion 61 that cooperates with the push rod 62, and a matching groove is provided on the side of the push portion 61 facing the upper cover 10. The end of the push rod 62 close to the floating plate 60 is inserted into the matching groove and can abut against the inner wall of the matching groove to push the floating plate 60 to float. Optionally, multiple groups of push rods 62 and push portions 61 are symmetrically arranged and respectively arranged around the floating plate 60 to push the floating plate 60 to float from multiple points, so that the floating amplitude of each position of the floating plate 60 is uniform.

[0081] Furthermore, a guide rail 54 guiding the lock buckle 52 is fixed on the floating plate 60 , and the lock buckle 52 is slidably mounted on the guide rail 54 , and the guide rail 54 and the lock buckle 52 float synchronously.

[0082] like Figure 2 and Figure 10-11As shown, the cover 100 further includes a pressure valve 80, which switches between a pressure relief state of opening the exhaust port on the cover 100 and a pressure storage state of closing the exhaust port on the cover 100 under the action of the drive assembly 30. The pressure valve 80 is assembled on the cover 100 and is used to open and close the exhaust port. When the exhaust port is closed by the pressure valve 80, the pressure in the pot body 210 cannot be discharged to the outside, and the pressure in the pot body 210 gradually increases and is in a pressure storage state; when the exhaust port is opened by the pressure valve 80, the pressure in the pot body 210 can be discharged through the exhaust port, and the pressure in the pot body 210 gradually decreases and is in a pressure relief state. In this way, the drive assembly 30 can not only drive the clamping mechanism 70 and / or the lock 52 to operate, but also be used to drive the pressure valve 80 to operate and perform pressure regulation.

[0083] The following describes the process in which the drive assembly 30 drives the clamping mechanism 70 and the pressure valve 80 to operate.

[0084] When the clamping mechanism 70 is in the cover-closed state, the pressure valve 80 can be in the pressure-accumulating state to pressurize the inside of the cooking utensil 200 after the cover is closed; that is, when the pressure inside the cooking utensil 200 increases, the clamping mechanism 70 clamps the heat-insulating cover plate 20 and the inner pot 220, locks the cover body 100, and prevents the cover body 100 from opening abnormally when the pressure inside the pot body 210 increases. In addition, when the clamping mechanism 70 is in the cover-opened state, the pressure valve 80 can be in the pressure-releasing state, so that the cover can be opened after the pressure inside the pot body 210 is released, to prevent the high-pressure airflow from flowing out of the pot body 210 when the cover is opened and burn the operator.

[0085] The driving assembly 30 also includes a pressure regulating member 38 connected to the transmission member 34 and moving synchronously. When the transmission member 34 moves back and forth under the drive of the driving member 32, it drives the linkage member 36 to move back and forth in the direction opposite to the moving direction of the transmission member 34, thereby driving the first claw 72 and the second claw 74 to move in the direction of approaching and moving away from each other, so that the clamping mechanism 70 switches between the box cover state and the open cover state. In addition, the pressure regulating member 38 connected to the transmission member 34 also moves back and forth, and can drive the pressure valve 80 to switch between the pressure storage state and the pressure release state to perform pressure regulation.

[0086] Specifically in the embodiment, under the drive of the driving assembly 50, the valve stem of the pressure valve 80 and the clamping mechanism 70 move asynchronously. When the valve stem of the pressure valve 80 moves under the action of the pressure regulating member 58, the pressure in the pot body 210 changes, and the pressure regulating work is performed; when the clamping mechanism 70 moves under the action of the transmission member 54 and the linkage member 56, the clamping mechanism 70 switches between the box cover state and the open cover state. Among them, the pressure regulating member 58 is connected to the transmission member 54 and moves synchronously. The linkage member 56 moves in the opposite direction with the transmission member 54 under the drive of the transmission member 54. During the movement of the pressure regulating member 58, the valve stem of the pressure valve 80 is driven to rise and fall intermittently. During the movement of the transmission member 54 and the linkage member 56, the clamping mechanism 70 is driven to open and close intermittently. The time period of the opening and closing action of the clamping mechanism 70 is staggered with the time period of the lifting and lowering of the valve stem in the pressure valve 80, so as to realize asynchronous movement of the clamping mechanism 70 and the valve stem, prevent the pressure regulating work and the opening and closing cover work from affecting each other, and prevent the driving component 50 from driving the clamping mechanism 70 to switch to the open cover state while regulating the pressure, thereby ensuring the safety performance of the cooking appliance.

[0087] The pressure regulating member 38 includes an inclined surface 381 and a horizontal surface 383 distributed along its own moving direction; when the inclined surface 381 cooperates and abuts against the valve stem of the pressure valve 80, the clamping mechanism 70 remains stationary. At this time, only the pressure regulation work is performed, and the opening and closing of the lid is not switched, so as to prevent safety problems caused by sudden opening of the lid when the pressure in the pot changes; when the horizontal surface 383 cooperates and abuts against the valve stem of the pressure valve 80, the valve stem will remain stationary without pressure in the direction of its own gravity, and the pressure in the pot will not change suddenly. At this time, the clamping mechanism 70 switches the working state, and the clamping mechanism 70 will not be impacted by sudden pressure changes during the switching process, which is safer and more reliable.

[0088] like Figure 16-17 As shown, specifically, the transmission member 34 includes a first linkage portion 33 arranged on the pressure regulating member 38, and the linkage member 36 has a second linkage portion 362; the first claw 72 and the second claw 74 are respectively provided with a first slide groove 722 and a second slide groove 742, and the first linkage portion 33 and the second linkage portion 362 are respectively slidably arranged in the first slide groove 722 and the second slide groove 742. When the first linkage part 33 and the second linkage part 362 slide in the first slide groove 722 and the second slide groove 742 respectively, the pressure regulating member 38 moves synchronously with the transmission member 34 and performs the pressure regulating operation, but no transmission is performed between the first linkage part 33 and the second linkage part 362 and the first claw 72 and the second claw 74 respectively, and the first claw 72 and the second claw 74 remain stationary. Only when the first linkage part 33 and the second linkage part 362 abut against the inner walls of the first slide groove 722 and the second slide groove 742 along the first direction respectively, the first claw 72 and the second claw 74 are driven to move, and the pressure regulating member 38 can perform the pressure regulating operation during the time period when the clamping mechanism 70 remains stationary, thereby realizing asynchronous operation of the pressure regulating and the opening and closing of the cover, thereby improving the safety performance of the cooking appliance 200.

[0089] Optionally, the first slide groove 722 and the second slide groove 742 have the same length in the moving direction of the transmission member (first direction), so that the first claw 72 and the second claw 74 can move simultaneously, and simultaneously lock or leave the heat preservation cover plate 20 and the inner pot 220. In addition, the lengths of the first slide groove 722 and the second slide groove 742 in the first direction are both greater than or equal to the length of the inclined section in the first direction, so that when the inclined section of the pressure regulating member 38 cooperates with the pressure valve 80, the first linkage member 36 and the second linkage member 36 can slide in the first slide groove 722 and the second slide groove 742 respectively, and will not drive the first claw 72 and the second claw 74 to move, and the pressure can be adjusted when the clamping mechanism 70 is in the closed state.

[0090] The following describes the process of the drive assembly 30 driving the lock 52 and the pressure valve 80 to operate.

[0091] When the pressure regulating member 38, under the action of the driving member 32, drives the pressure valve 80 to be in a pressure storage state, the lock buckle 52 is in a fastened state under the action of the transmission member 34, so that the pressure storage operation is performed only when the cover body 100 and the pot body 210 are fastened, thereby preventing safety problems; when the pressure regulating member 38, under the action of the driving member 32, drives the pressure valve 80 to be in a pressure relief state, the lock buckle 52 is in a separated state under the action of the transmission member 34, thereby allowing the cover body 100 to be separated from the pot body 210 after the pressure relief, thereby preventing the cover from being directly opened when the pressure relief is not present.

[0092] The following describes the process of the drive component 30 driving the lock 52, the clamping mechanism 70 and the pressure valve 80. During this process, when the drive component 30 moves, it drives the clamping mechanism 70, the lock 52 and the pressure valve 80 to perform their respective work. The coordination relationship between the three is the same as described above and will not be repeated here.

[0093] like Figure 18-Figure 20 As shown, the cover body 100 also includes a power-off cover opening mechanism 90, which includes a spare drive member 92 and a spare transmission member 94. The spare transmission member 94 is sleeved on the output shaft of the drive member 32, and the spare drive member 92 is transmission-connected with the spare transmission member 94, and cooperates with the cover opening tool 230 to transmit the rotational motion output by the cover opening tool 230 to the spare transmission member 94; that is, when the cover opening tool 230 is manually rotated, the spare drive member 92 and the spare transmission member 94 can be driven to rotate, and then the output shaft of the drive member 32 can be driven to rotate, so that the drive assembly 30 can move normally to unlock the locking mechanism 50 and the clamping mechanism 70, allowing the cover of the cooking appliance 200 to be opened when the power is off.

[0094] Specifically, the spare drive member 92 has a matching hole 921 that cooperates with the cover opening tool 230. The cross-section of the matching hole 921 corresponds to the cross-section of the docking end 231 of the cover opening tool 230, and both are set to be non-circular to prevent the docking end 231 of the cover opening tool 230 from slipping in the matching hole 921 when the operator rotates the cover opening tool 230, so that the cover opening tool 230 can reliably drive the spare drive member 92 to rotate.

[0095] In one embodiment of the present invention, there is also provided a cover body 100 which can lock the cover body 100 and the pot body 210 multiple times and can also perform pressure regulation.

[0096] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cover body, characterized in that: include: Upper cover (10); A heat-insulating cover plate (20) is detachably arranged on a side of the upper cover (10) facing the inner pot (220) in the pot body (210); as well as A drive assembly (30), a clamping mechanism (70) and a pressure valve (80); the clamping mechanism (70) switches between a closed state for clamping the heat-insulating cover plate (20) and the inner pot (220) and an open state for allowing the heat-insulating cover plate (20) to be separated from the inner pot (220) under the action of the drive assembly (30); and the pressure valve (80) switches between a pressure-releasing state for opening the exhaust port on the cover body (100) and a pressure-accumulating state for closing the exhaust port under the action of the drive assembly (30); Wherein, when the clamping mechanism (70) is in the cover-closing state, the pressure valve (80) may be in the pressure-accumulating state; when the clamping mechanism (70) is in the cover-opening state, the pressure valve (80) may be in the pressure-releasing state; The clamping mechanism (70) comprises a first clamping claw (72) and a second clamping claw (74) which move in directions approaching and moving away from each other; the first clamping claw (72) and the second clamping claw (74) move in directions approaching and both clamp the heat-insulating cover plate (20) and the inner pot (220); or the first clamping claw (72) and the second clamping claw (74) move in directions away from each other and both separate from the heat-insulating cover plate (20) and the inner pot (220); the driving assembly (30) comprises a driving member (32), a transmission member (34) and a linkage member (36), wherein the transmission member (34) is arranged between the driving member (32) and the linkage member (36), and the first clamping claw (72) and the second clamping claw (74) are respectively connected to the transmission member (34) and the linkage member (36); wherein the transmission member (34) moves back and forth under the drive of the driving member (32), and drives the linkage member (36) to move back and forth in a direction opposite to the moving direction of the transmission member (34); The driving assembly (30) further comprises a pressure regulating member (38) connected to the transmission member (34) and moving synchronously, and the pressure regulating member (38) drives the pressure valve (80) to switch between the pressure storage state and the pressure release state when the pressure regulating member (38) moves back and forth; the pressure regulating member (38) comprises an inclined surface (381) and a horizontal surface (383) distributed along its own moving direction; when the inclined surface (381) cooperates and abuts against the valve stem of the pressure valve (80), the clamping mechanism (70) remains stationary; when the horizontal surface (383) cooperates and abuts against the valve stem of the pressure valve (80), the clamping mechanism (70) switches its working state.

2. The cover according to claim 1, characterized in that: The driving assembly (30) further comprises a gear, wherein the gear is arranged between the transmission member (34) and the linkage member (36), and the transmission member (34) and the linkage member (36) are respectively provided with a first rack (343) and a second rack (361) which mesh with the gear for transmission; Wherein, the first rack (343) and the second rack (361) extend in the same direction.

3. The cover according to claim 2, characterized in that: The transmission member (34) is also provided with a driving rack (35), the extension direction of the driving rack (35) is parallel to the extension direction of the first rack (343), and the output end of the driving member (32) is provided with a driving gear (321) meshing with the driving rack (35).

4. The cover according to claim 1, characterized in that: Under the drive of the drive assembly (30), the valve stem of the pressure valve (80) and the clamping mechanism (70) move asynchronously.

5. The cover according to any one of claims 1 to 4, characterized in that: The transmission member (34) comprises a first linkage portion (33) provided on the pressure regulating member (38), and the linkage member has a second linkage portion (362); The first clamping claw (72) and the second clamping claw (74) are respectively provided with a first sliding groove (722) and a second sliding groove (742), and the first linkage part (33) and the second linkage part (362) are respectively slidably arranged in the first sliding groove (722) and the second sliding groove (742).

6. The cover according to claim 5, characterized in that: The first sliding groove (722) and the second sliding groove (742) have the same length in the moving direction of the transmission member (34).

7. A cooking utensil, characterized in that: The cover body (100) comprises any one of claims 1 to 6.

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