Upper cover and electric cooker

Abstract

The utility model discloses an upper cover and an electric cooker, and relates to the technical field of kitchen appliances, the upper cover is used for a cooking utensil with pressure, the upper cover and an inner pot of the cooking utensil are enclosed to form a cooking cavity, the upper cover is provided with a steam cavity and an exhaust channel, one end of the exhaust channel is communicated with the steam cavity, and the other end of the exhaust channel is communicated with the cooking cavity. The upper cover further comprises a pressure-bearing piece, a sealing piece, a push rod structure and an elastic piece, the pressure-bearing piece is arranged in the steam cavity, and the pressure-bearing piece has a pressure rising state for blocking one end of the exhaust channel and a pressure releasing state for being far away from one end of the exhaust channel; a receding opening is formed in the cavity wall of the steam cavity, and the sealing piece is connected to the edge of the receding opening in a sealed mode; the push rod structure is movably arranged in the receding opening in a penetrating mode and drives the sealing piece to abut against or be away from the pressure bearing piece so that the pressure bearing piece can be switched between the pressure rising state and the pressure releasing state. The elastic piece is arranged between the cavity wall of the steam cavity and the push rod structure to push the push rod structure to be away from the pressure bearing piece. The upper cover provided by the utility model aims to realize automatic resetting of the push rod structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field, especially a kind of upper cover and electric rice cooker. BACKGROUND

[0002] In the existing rice cooking utensil with pressure, it is necessary to ensure that the cooking cavity is kept sealed in the pressure state, but due to the need for boiling treatment of the cooking cavity, a linkage pressure relief push rod structure is added to perform boiling pressure relief. The push rod needs to pass through the cover to push the pressure-bearing part in the steam cavity, and the push rod and the steam cavity need to be sealed by a sealing element. In the prior art, the action of the push rod leaving generally relies on the self-resetting deformation of the sealing element, but the sealing element is prone to material aging and deformation, so the push rod cannot be reset, resulting in the problem that the cooking cavity cannot be pressurized. SUMMARY

[0003] The main purpose of the utility model is to provide an upper cover and an electric rice cooker, which aims to automatically reset the push rod structure and prevent the sealing element from aging and causing the push rod to fail to reset, so that the cooking utensil cannot be pressurized.

[0004] To achieve the above-mentioned purpose, the upper cover of the utility model is used in a cooking utensil with pressure, the upper cover and the inner pot of the cooking utensil form a cooking cavity, the upper cover forms a steam cavity and an exhaust passage, one end of the exhaust passage communicates with the steam cavity, and the other end communicates with the cooking cavity, the upper cover further includes a pressure-bearing part, a sealing element, a push rod structure and a resilient element, the pressure-bearing part is arranged in the steam cavity, the pressure-bearing part has a pressure state of blocking one end of the exhaust passage and a pressure relief state of moving away from one end of the exhaust passage, the cavity wall of the steam cavity is provided with a clearance, and the sealing element is sealingly connected at the clearance, the push rod structure is movably arranged in the clearance and drives the sealing element to abut against or move away from the pressure-bearing part, so that the pressure-bearing part switches between the pressure state and the pressure relief state, and the resilient element is arranged between the cavity wall of the steam cavity and the push rod structure to push the push rod structure away from the pressure-bearing part.

[0005] In an embodiment, one end of the push rod structure away from the sealing element forms a boss extending in the circumferential direction thereof, one end of the resilient element abuts against the boss, and the other end of the resilient element abuts against the cavity wall of the steam cavity.

[0006] In an embodiment, the upper cover further includes a pressing element, the pressing element is arranged at the clearance and presses the edge of the sealing element against the inner wall of the clearance, one end of the push rod structure is movably arranged in the pressing element and connected with the middle part of the sealing element, and the resilient element acts between the pressing element and the push rod structure.

[0007] In an embodiment, the pressing member is provided with a guide opening, and one end of the push rod structure is slidably arranged in the guide opening, and the guide opening is used to limit the moving direction of the push rod structure.

[0008] One end of the elastic member is abutted against the boss, and the other end of the elastic member is abutted against the edge of the avoiding opening.

[0009] The middle part of the pressing member is recessed towards the pressure receiving member relative to the outer edge, and one end of the elastic member close to the pressure receiving member is located in the recess.

[0010] In an embodiment, the outer periphery of the sealing member is provided with a groove extending along the circumferential direction, and the edge of the avoiding opening is clamped in the groove.

[0011] The pressing member is provided with an extension part extending radially outward, and the extension part abuts one groove wall of the groove against the edge of the avoiding opening.

[0012] In an embodiment, one end of the push rod structure close to the sealing member is provided with a clamping protrusion, the surface of the sealing member facing the push rod structure is provided with a clamping groove, and the clamping protrusion is clamped and connected to the clamping groove.

[0013] The utility model also provides a kind of electric rice cooker, including the upper cover as described above and the pot body for containing inner pot, wherein, the upper cover is connected to the pot body and is enclosed with the inner pot to form cooking cavity.

[0014] In an embodiment, the upper cover further includes a driving mechanism, the driving mechanism is arranged in the upper cover and drives the push rod structure close to the pressure receiving member, the upper cover is provided with a steam outlet communicated with the steam cavity, the driving mechanism and the steam outlet are respectively located on opposite sides of the pressure receiving member, and the push rod structure and the driving mechanism are located on the same side of the pressure receiving member.

[0015] In an embodiment, the electric rice cooker further includes a sliding member and two clamps, both of which are arranged on the upper cover, the two clamps are oppositely arranged, both of which are linked and matched with the sliding member, the driving mechanism drives the sliding member to slide to drive the push rod structure to move, and simultaneously drives the two clamps to clamp or move away from the inner pot.

[0016] In an embodiment, the sliding member is symmetrically provided with two guide grooves, the calipers correspond to the guide grooves one by one, a guide column of a caliper is slidingly connected in the guide groove, so that the caliper can slide along the extension direction of the guide groove, each guide groove comprises a first groove and a second groove connected in communication, the first groove and the second groove are arranged parallel to the sliding direction of the sliding member, and the first groove is arranged away from the center of the upper cover compared with the second groove.

[0017] When the sliding member drives the two calipers to be located in the first groove, the two calipers are away from the inner pot, and the push rod structure abuts against the pressure bearing member.

[0018] When the sliding member drives the two calipers to be located in the second groove, the two calipers clamp the inner pot.

[0019] When the sliding member drives the two calipers to slide from one end of the second groove close to the first groove to the other end away from the first groove, the push rod structure gradually moves away from the pressure bearing member.

[0020] The technical scheme of the utility model realizes the automatic reset of the push rod structure by adopting the elastic member, compared with resetting the push rod structure by using the elasticity of the sealing member, adopting the elastic member can delay the aging speed of the sealing member and improve the service life.

[0021] When the cooking cavity needs to be depressurized, the push rod structure is driven to move towards the direction close to the pressure bearing member, the push rod structure pushes the pressure bearing member away from the exhaust passage through the sealing member, the cooking cavity is communicated with the steam cavity, and the elastic member is compressed under stress at this time; when the cooking cavity needs to be pressurized, the driving force on the push rod structure is removed, the push rod structure is driven to move away from the pressure bearing member by the elastic force of the elastic member at this time, the pressure bearing member returns to the original position, blocks the exhaust passage, and the gas in the cooking cavity is retained in the cooking cavity, so that the pressure in the cooking cavity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0023] Figure 1 The structure schematic view of an embodiment of the electric rice cooker provided by the utility model is shown in the figure.

[0024] Figure 2 The structure schematic view of an embodiment of the electric rice cooker provided by the utility model is shown in the figure. Figure 1 The local enlarged view of A in the figure.

[0025] Figure 3 Structure diagram of another embodiment of the electric rice cooker provided by the utility model is provided;

[0026] Figure 4 For Figure 3 The local enlarged view at B in the middle;

[0027] Figure 5 The bottom structure schematic view of the upper cover in the electric rice cooker provided by the utility model is provided.

[0028] Explanation of reference numerals:

[0029] 100, electric rice cooker;10, upper cover;1, steam cavity;11, avoidance port;12, steam outlet;2, exhaust passage;3, pressure bearing;4, sealing element;41, groove;42, clamping groove;5, push rod structure;51, boss;52, clamping convex;6, elastic element;7, compression element;71, guide port;72, extension;8, driving mechanism;20, pot body;30, inner pot;40, sliding element;401, guide sliding groove;4011, first sliding groove;4012, second sliding groove;50, caliper.

[0030] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0033] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include the A scheme, or the B scheme, or the A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0034] In the existing pressure rice cooking utensil, it is necessary to ensure that the cooking cavity is kept sealed in the pressure state, but due to the need for sudden boiling treatment of the cooking cavity, a linkage pressure relief push rod structure is added to perform sudden boiling pressure relief. The push rod needs to pass through the cover to push the pressure-bearing part in the steam chamber, and the push rod and the steam chamber need to be sealed by a sealing element. In the prior art, the action of the push rod leaving generally relies on the self-resetting deformation of the sealing element, but the sealing element is prone to material aging and deformation, so that the push rod cannot be reset, resulting in the problem that the cooking cavity cannot be pressurized.

[0035] The utility model provides a kind of upper cover and electric rice cooker, to realize the automatic reset of push rod structure, prevent the aging of sealing element from causing push rod unable to reset, make the problem that electric rice cooker cannot be pressurized.

[0036] Please refer to Figures 1 to 4 In an embodiment of the present application, the upper cover 10 is used for a pressure electric rice cooker 100, and the upper cover 10 and the inner pot 30 of the electric rice cooker 100 form a cooking cavity. The upper cover 10 forms a steam chamber 1 and an exhaust passage 2. One end of the exhaust passage 2 communicates with the steam chamber 1, and the other end communicates with the cooking cavity. The upper cover 10 further includes a pressure-bearing part 3, a sealing element 4, a push rod structure 5 and an elastic element 6. The pressure-bearing part 3 is arranged in the steam chamber 1. The pressure-bearing part 3 has a pressure state of plugging one end of the exhaust passage 2 and a pressure relief state of being away from one end of the exhaust passage 2. The cavity wall of the steam chamber 1 is provided with a clearance 11, and the sealing element 4 is sealingly connected to the clearance 11. The push rod structure 5 is movably arranged in the clearance 11 and drives the sealing element 4 to abut or be away from the pressure-bearing part 3, so that the pressure-bearing part 3 is switched between the pressure state and the pressure relief state. The elastic element 6 is arranged between the cavity wall of the steam chamber 1 and the push rod structure 5 to drive the push rod structure 5 away from the pressure-bearing part 3.

[0037] In the embodiment, the upper cover 10 and the inner pot 30 of the electric cooker 100 enclose a cooking cavity for cooking food, and the upper cover 10 is formed with a steam cavity 1 communicating with the outside and an exhaust passage 2 communicating the steam cavity 1 with the cooking cavity. A pressure bearing piece 3 is arranged at one end of the exhaust passage 2 communicating with the steam cavity 1, and the pressure bearing piece 3 can be in the form of a small ball with a certain weight, which can block one end of the exhaust passage 2 by its own weight, so that the cooking cavity is not communicated with the outside, and the pressure in the cooking cavity rises. It can be understood that in other embodiments, the pressure bearing piece 3 can also be in other structures, such as a cylindrical structure.

[0038] The technical scheme of the utility model discloses adopts the elastic piece 6 to realize the automatic reset of the push rod structure 5, compared with the situation that the push rod structure 5 is reset by the elasticity of the sealing piece 4, adopts the elastic piece 6 to delay the aging speed of the sealing piece 4, improves the service life.

[0039] When the cooking cavity needs to be depressurized, the push rod structure 5 is driven to move towards the pressure bearing piece 3, the push rod structure 5 pushes the pressure bearing piece 3 away from the exhaust passage 2 through the sealing piece 4, the cooking cavity is communicated with the steam cavity 1, and the elastic piece 6 is compressed under stress at this time.

[0040] In some embodiments of the utility model, the end of the push rod structure 5 away from the sealing piece 4 is formed with a boss 51 extending along the circumference thereof, one end of the elastic piece 6 abuts against the boss 51, and the other end of the elastic piece 6 abuts against the cavity wall of the steam cavity 1.

[0041] In the embodiment, the elastic member 6 can be sleeved on the outer periphery of the push rod structure 5, one end of the elastic member 6 abuts against the boss 51 extending on the outer periphery of the push rod structure 5, and the other end abuts against the cavity wall of the steam cavity 1, thereby playing a role of limiting the deformation direction of the elastic member 6 and preventing the elastic member 6 from being deflected to cause the reset failure. When the push rod structure 5 abuts against the pressure bearing member 3 through the avoiding opening 11 on the cavity wall of the steam cavity 1, the elastic member 6 is compressed and deformed by external force, and when the push rod structure 5 loses the external force, the elastic member 6 restores the deformation, applies an elastic force to the boss 51 on the push rod structure 5, and drives the push rod structure 5 to restore the initial position.

[0042] In some embodiments of the utility model, the upper cover 10 further comprises a pressing member 7, the pressing member 7 is arranged at the avoiding opening 11 and presses the sealing member 4 against the inner wall of the avoiding opening 11. One end of the push rod structure 5 is movably arranged in the pressing member 7 and connected with the sealing member 4. As shown in Figure 2 and Figure 4 The outer edge of the sealing member 4 is pressed against the inner wall of the avoiding opening 11 by the pressing member 7. One end of the push rod structure 5 is movably arranged in the pressing member 7 and connected with the middle part of the sealing member 4. Therefore, the sealing member 4 can adapt to the movement of the push rod structure 5 through deformation.

[0043] In the embodiment, the pressing member 7 is arranged to fix the sealing member 4 to the avoiding opening 11, so as to prevent the sealing member 4 from falling off from the avoiding opening 11 after long-time use, causing the sealing failure of the steam cavity 1, the steam affecting other mechanical structures and causing functional failure. The push rod structure 5 is movably arranged in the pressing member 7 to be connected with the sealing member 4, and the push rod structure 5 indirectly pushes the sealing member 4 to switch the pressure bearing member 3 between the pressure state and the pressure relief state.

[0044] In some embodiments of the utility model, as shown in Figure 2 The pressing member 7 is provided with a guide opening 71, and one end of the push rod structure 5 is slidably arranged in the guide opening 71. The guide opening 71 is used to limit the movement direction of the push rod structure 5.

[0045] The guide opening 71 on the pressing member 7 plays a role of sliding guide for the push rod structure 5, so that the movement of the push rod structure 5 is more smooth, and the movement of the push rod structure 5 is prevented from being deflected to cause the problem that the pressure bearing member 3 cannot be switched between states.

[0046] In an embodiment of the utility model, one end of the elastic member 6 abuts against the boss 51, and the other end of the elastic member 6 abuts against the edge of the guide opening 71.

[0047] In the embodiment, the elastic member 6 is sleeved on the outer periphery of the push rod structure 5, one end of the elastic member 6 abuts against the boss 51 extending on the outer periphery of the push rod structure 5, and the other end abuts against the edge of the guide opening 71 of the pressing member 7, thereby playing a role of limiting the deformation direction of the elastic member 6 and preventing the elastic member 6 from being deflected to cause the reset failure. When the push rod structure 5 abuts against the pressure bearing member 3 through the guide opening 71 on the pressing member 7, the elastic member 6 is compressed and deformed by external force, and when the push rod structure 5 loses the external force, the elastic member 6 restores the deformation and applies an elastic force to the boss 51 on the push rod structure 5, so that the push rod structure 5 is driven to restore the initial position.

[0048] In an embodiment of the utility model, the middle part of the pressing member 7 is recessed towards the direction close to the pressure bearing member 3 relative to the outer edge, and the end of the elastic member 6 close to the pressure bearing member 3 is located in the recess.

[0049] In the embodiment, the middle part of the pressing member 7 is recessed towards the direction close to the pressure bearing member 3, and the end of the elastic member 6 close to the pressure bearing member 3 is located in the recess. Compared with the plane structure, on the one hand, the recess can make the abutment between the elastic member 6 and the pressing member 7 more stable and play a certain limiting role, and on the other hand, the recess can accommodate a longer elastic member 6, improve the pushing force of the elastic member 6 on the push rod structure 5, further slow down the aging speed of the sealing member 4, and improve the service life.

[0050] In an embodiment of the utility model, the outer periphery of the sealing member 4 is formed with a groove 41 extending along the circumferential direction thereof, and the edge of the avoiding opening 11 is clamped in the groove 41.

[0051] In the embodiment, the outer periphery of the sealing member 4 is formed with the groove 41, and the edge of the avoiding opening 11 is clamped in the groove 41, so that the sealing line between the sealing member 4 and the avoiding opening 11 can be lengthened, and the sealing effect of the sealing member 4 on the avoiding opening 11 can be improved. The groove 41 extends along the circumferential direction of the sealing member 4, and the edge of the avoiding opening 11 can be clamped in the groove 41, so that the sealing effect of the sealing member 4 can be further improved.

[0052] In an embodiment of the utility model, the pressing member 7 is formed with an extension 72 extending outward along the radial direction thereof, and the extension 72 abuts one groove wall of the groove 41 against the edge of the avoiding opening 11.

[0053] In the embodiment, the pressing member 7 further includes the extension 72 extending along the circumferential direction of the pressing member 7, and the extension 72 abuts one groove wall of the groove 41 against the edge of the avoiding opening 11, so that the stability and the sealing effect of the connection between the sealing member 4 and the avoiding opening 11 can be further improved.

[0054] In an embodiment of the utility model, one end of the push rod structure 5 close to the sealing member 4 is provided with a clamping convex 52, the surface of the sealing member 4 facing the push rod structure 5 is provided with a clamping groove 42, and the clamping convex 52 is clamped and connected to the clamping groove 42.

[0055] In the embodiment, the push rod structure 5 is provided with a clamping protrusion 52, and the sealing element 4 is provided with a clamping groove 42, the push rod structure 5 and the sealing element 4 are connected through the clamping connection of the clamping protrusion 52 and the clamping groove 42, the push rod structure 5 can not only indirectly push the sealing element 4 to push the pressure-bearing element 3 to switch the state, but also can drive the sealing element 4 to return to the initial position under the action of the elastic element 6, and the service life of the sealing element 4 is improved.

[0056] The utility model discloses still propose a kind of electric rice cooker 100, including the upper cover 10 as described above and the pot body 20 for containing inner pot 30, wherein, the upper cover 10 is connected with pot body 20 and is enclosed to form cooking cavity with inner pot 30.

[0057] In the embodiment, the electric rice cooker 100 includes the upper cover 10 and the pot body 20 for containing the inner pot 30, and the upper cover 10 is connected with the pot body 20 and encloses the inner pot 30 to form a cooking cavity. When the pressure-bearing element 3 in the upper cover 10 is in the pressure relief state, the cooking cavity, the exhaust passage 2 and the steam chamber 1 are communicated, that is, the cooking cavity is communicated with the outside atmosphere. When the pressure-bearing element 3 in the upper cover 10 is in the pressure state, the cooking cavity is closed and not communicated with the outside, and the internal pressure can be raised for cooking food.

[0058] In some embodiments of the utility model, the upper cover 10 further includes a driving mechanism 8, which is arranged in the upper cover 10 and drives the push rod structure 5 to move close to the pressure-bearing element 3.

[0059] In the embodiment, the push rod structure 5 is driven by the driving mechanism 8 to move close to the pressure-bearing element 3, so that the pressure-bearing element 3 is switched to the pressure relief state, and the automatic switching between the pressure state and the pressure relief state can be realized. The driving mechanism 8 can directly drive the push rod structure 5 to move linearly or drive the push rod structure 5 to move linearly through the transmission of a gear and a rack, and the specific type of the driving mechanism 8 is not limited herein.

[0060] Further, as shown in Figure 1 The upper cover 10 is provided with a steam outlet 12 communicated with the steam chamber 1, the driving mechanism 8 and the steam outlet 12 are respectively located on opposite sides of the pressure-bearing element 3, and the push rod structure 5 and the driving mechanism 8 are located on the same side of the pressure-bearing element 3.

[0061] The push rod structure 5 and the driving mechanism 8 are located on the side of the pressure-bearing element 3 away from the steam outlet, which can avoid the influence of high-temperature steam of the steam outlet on the push rod structure 5 and the driving mechanism 8 as much as possible, and can also reasonably utilize the limited space on the upper cover to separate the high-temperature steam area and the transmission structure area as much as possible in the limited space.

[0062] As shown in Figure 5As shown, the electric rice cooker 100 further comprises a sliding member 40 and two calipers 50, which are both arranged on the upper cover 10, the two calipers 50 are oppositely arranged, and the two calipers 50 are both linked and matched with the sliding member 40, the driving mechanism 8 drives the sliding member 40 to slide to drive the push rod structure 5 to move, and simultaneously drives the two calipers 50 to clamp or move away from the inner pot 30.

[0063] In the embodiment, the driving mechanism 8 drives the sliding member 40 to slide relative to the upper cover 10, through the linkage and matching structure between the sliding member 40 and the two calipers 50, the two calipers 50 can be switched between the state of clamping the inner pot 30 and the state of moving away from the inner pot 30, and in the process of sliding, the sliding member 40 can also drive the push rod structure 5 to move between abutting against the pressure bearing member 3 and moving away from the pressure bearing member 3, so as to switch between the pressure relief state and the pressure state of the cooking cavity. By driving one sliding member 40, the two-step operation of clamping and closing the inner pot 30 and sealing the cooking cavity can be realized, so that the design of the upper cover 10 is more simple.

[0064] Further, in some embodiments, the sliding member 40 is symmetrically provided with two guide sliding grooves 401, the calipers 50 correspond to the guide sliding grooves 401 one by one, a guide column of one caliper 50 is slidably connected in the guide sliding groove 401, so that the caliper can slide along the extension direction of the guide sliding groove 401, each guide sliding groove 401 comprises a first sliding groove 4011 and a second sliding groove 4012 which are connected in communication, the first sliding groove 4011 and the second sliding groove 4012 are both arranged parallel to the sliding direction of the sliding member 40, and the first sliding groove 4011 is arranged away from the center of the upper cover 10 compared with the second sliding groove 4012.

[0065] Under the condition that the sliding member 40 drives the two calipers 50 to be located in the first sliding groove 4011, the two calipers 50 move away from the inner pot 30, and the push rod structure 5 abuts against the pressure bearing member 3;

[0066] Under the condition that the sliding member 40 drives the two calipers 50 to be located in the second sliding groove 4012, the two calipers 50 clamp the inner pot 30;

[0067] When the sliding member 40 drives the two calipers 50 to slide from one end of the second sliding groove 4012 close to the first sliding groove 4011 to the other end away from the first sliding groove 4011, the push rod structure 5 gradually moves away from the pressure bearing member 3.

[0068] In this embodiment, two guide grooves 401 are symmetrically arranged on the sliding member 40, the guide grooves 401 include a first guide groove 4011 and a second guide groove 4012, one end of the first guide groove 4011 communicates with one end of the second guide groove 4012, the extension directions of the first guide groove 4011 and the second guide groove 4012 are parallel to the sliding direction of the sliding member 40, and the distance between the first guide groove 4011 and the center position of the upper cover 10 is greater than the distance between the second guide groove 4012 and the center position of the upper cover 10, that is, when the two clamps 50 are located in the first guide groove 4011, the distance between the two clamps 50 is greater than when the two clamps 50 are located in the second guide groove 4012. A guide column is arranged on each clamp 50, which can slide along the guide groove 401 through the guide column, thereby driving one clamp 50 to slide along the extension direction of one guide groove 401.

[0069] In the closing stage of the upper cover 10 and the pressure-creating stage, the driving mechanism 8 first drives the sliding member 40 to move away from the pressure-bearing member 3, the sliding member 40 drives the two clamps 50 to slide from the other end of the first guide groove 4011 to one end of the second guide groove 4012 through the guide grooves 401 arranged thereon, and the two clamps 50 are close to the center position of the upper cover 10, that is, the two clamps 50 are close to each other to lock the inner pot 30, then the sliding member 40 drives the two clamps 50 to slide from one end of the second guide groove 4012 to the other end of the second guide groove 4012 through the guide grooves 401 arranged thereon, and the distance between the two clamps 50 remains unchanged to keep the state of clamping the inner pot 30, the sliding member 40 drives the push rod structure 5 to gradually move away from the pressure-bearing member 3, so that the pressure-bearing member 3 switches to the pressure-creating state of blocking the exhaust passage 2.

[0070] In the pressure-releasing stage, the driving mechanism 8 first drives the sliding member 40 to move a distance close to the pressure-bearing member 3, the sliding member 40 drives the two clamps 50 to slide from the other end of the second guide groove 4012 to one end of the second guide groove 4012, and the distance between the two clamps 50 remains unchanged to keep the state of clamping the inner pot 30 in this process, the sliding member 40 drives the push rod structure 5 to abut against the pressure-bearing member 3, so that the pressure-bearing member 3 switches to the pressure-releasing state of moving away from the exhaust passage 2. Then the driving mechanism 8 drives the sliding member 40 to continue to move close to the pressure-bearing member 3, the two clamps 50 slide from the second guide groove 4012 to the first guide groove 4011, and the distance between the two clamps 50 becomes larger to release the inner pot 30. In this moving process, the push rod structure 5 will be driven by the sliding member 40 to continue to push the sealing member 4 forward, and the deformation amount of the sealing member 4 is relatively large, which is more likely to cause aging deformation and difficulty, so it is more necessary to arrange the elastic member 6 for resetting the push rod structure 5.

[0071] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A top cover for a cooking appliance under pressure, the top cover and an inner pot of the cooking appliance enclosing a cooking cavity, the top cover being formed with a steam cavity and an exhaust passage, one end of the exhaust passage communicating with the steam cavity and the other end communicating with the cooking cavity, characterized in that, The upper cover further comprises: a pressure bearing arranged in the steam cavity, the pressure bearing having a pressure-creating state of blocking one end of the exhaust passage and a pressure-releasing state of moving away from the one end of the exhaust passage; a sealing member, a cavity wall of the steam cavity being provided with a clearance, the sealing member being sealingly connected to the clearance; a push rod structure movably arranged in the clearance and driving the sealing member to abut against or move away from the pressure bearing, so as to switch the pressure bearing between the pressure-creating state and the pressure-releasing state; and a resilient member arranged between the cavity wall of the steam cavity and the push rod structure, so as to drive the push rod structure to move away from the pressure bearing.

2. The upper cover of claim 1, wherein An end of the push rod structure away from the sealing member is formed with a boss extending along a circumferential direction thereof, one end of the resilient member abutting against the boss, and the other end of the resilient member abutting against the cavity wall of the steam cavity.

3. The upper cover of claim 2, wherein, The upper cover further comprises a pressing member arranged in the clearance and pressing an outer edge of the sealing member against an inner wall of the clearance, one end of the push rod structure movably arranged in the pressing member and connected to a middle portion of the sealing member, and the resilient member acting between the pressing member and the push rod structure.

4. The upper cover of claim 3, wherein The pressing member is provided with a guide opening, one end of the push rod structure slidingly arranged in the guide opening, and the guide opening being used to limit a moving direction of the push rod structure. One end of the resilient member abutting against the boss, and the other end of the resilient member abutting against an edge of the guide opening. A middle portion of the pressing member is recessed relative to an outer edge towards the pressure bearing, and one end of the resilient member close to the pressure bearing is located in the recess.

5. The upper cover of claim 3, wherein An outer periphery of the sealing member is formed with a groove extending along a circumferential direction thereof, and an edge of the clearance is clamped in the groove. The pressing member is formed with an extension extending outwardly in a radial direction thereof, and the extension abuts one groove wall of the groove against the edge of the clearance.

6. The upper cover of any one of claims 1 to 5, wherein, One end of the push rod structure close to the sealing member is provided with a clamping protrusion, and a surface of the sealing member towards the push rod structure is provided with a clamping groove, and the clamping protrusion is clamped and connected to the clamping groove.

7. An electric rice cooker, characterized by comprising: The upper cover comprises the upper cover and a pot body for accommodating an inner pot, wherein the upper cover is sealingly connected to the pot body and forms a cooking cavity together with the inner pot.

8. The electric rice-cooker according to claim 7, wherein The upper cover further comprises a driving mechanism arranged in the upper cover and driving one end of the push rod structure close to the pressure bearing; The upper cover is provided with a steam outlet in communication with the steam cavity, the driving mechanism and the steam outlet are respectively located on opposite sides of the pressure bearing, and the push rod structure and the driving mechanism are located on the same side of the pressure bearing.

9. The electric rice-cooker according to claim 8, wherein The electric rice cooker further comprises a sliding member and two clamping pincers arranged in the upper cover, the two clamping pincers are arranged oppositely, the two clamping pincers are linked and matched with the sliding member, the driving mechanism drives the sliding member to slide so as to drive the push rod structure to move, and simultaneously drives the two clamping pincers to clamp or move away from the inner pot.

10. The electric rice-cooker according to claim 9, wherein The sliding member is symmetrically provided with two guide sliding grooves, one of the calipers corresponds to one of the guide sliding grooves, a guide column of one of the calipers is slidably connected in the guide sliding groove, so that one of the calipers can slide along the extension direction of one of the guide sliding grooves, each of the guide sliding grooves comprises a first sliding groove and a second sliding groove connected in communication, the first sliding groove and the second sliding groove are both arranged parallel to the sliding direction of the sliding member, and the first sliding groove is arranged away from the center of the upper cover compared with the second sliding groove; Under the condition that the sliding member drives the two calipers to be located in the first sliding groove, the two calipers are away from the inner pot, and the push rod structure abuts against the pressure bearing member; Under the condition that the sliding member drives the two calipers to be located in the second sliding groove, the two calipers clamp the inner pot; When the sliding member drives the two calipers to slide from one end of the second sliding groove close to the first sliding groove to the other end away from the first sliding groove, the push rod structure gradually moves away from the pressure bearing member.

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