A pot lid opening and closing structure and a cooking device

Abstract

The present invention provides a pot lid opening and closing structure and a cooking device, including: a pot lid, on which an inner lid is provided, and a heat preservation cover plate is provided on the inner lid; a claw assembly, which is arranged on the heat preservation cover plate, and the claw assembly includes: at least one claw, and the claw extends in a direction away from the inner pot; a pulling member, which is connected to the claw and moves synchronously with the claw; a claw driving device, including: a driving motor, which is arranged on the heat preservation cover plate and is provided with a driving gear thereon; a transmission member, which acts between the driving motor and the pulling member at the same time, and is used to drive the claw to move to a locking position close to the heat preservation cover plate and an unlocking position away from the heat preservation cover plate. When locking or unlocking, the driving motor drives the gear to pull the transmission member to move, and the transmission member then drives the pulling member and drives the claw to move. Compared with the prior art, the driving motor drives the claw to move more precisely and avoids the situation of insufficient driving force in manual driving.

Description

Technical Field

[0001] The present invention relates to the technical field of the opening and closing structure of household appliances, and particularly relates to a pot lid opening and closing structure and a cooking device including the same. Background Art

[0002] For a cooking device, a lid is an indispensable component. For cooking devices such as pressure cookers, during the cooking process, the lid needs to be tightly connected to the pot body to ensure stable pressure and temperature.

[0003] In the prior art, a locking structure is usually provided between the pot body and the lid, and the pot body and the lid are stably connected through the locking structure. In the prior art, the locking structure is often driven to move manually. Often, due to non-standard operation or insufficient force of the operator, the situation of incomplete locking occurs. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of incomplete locking when performing the locking operation manually in the prior art.

[0005] To this end, the present invention provides a pot lid opening and closing structure, including: a pot lid, on which a heat preservation cover plate is provided; a claw assembly, provided on the heat preservation cover plate, the claw assembly including: at least one claw, the claw extending in a direction away from the inner pot; a pulling member, connected to the claw and moving synchronously with the claw; a claw driving device, including: a driving motor, provided on the heat preservation cover plate, on which a driving gear is provided; a transmission member, acting between the driving motor and the pulling member at the same time, for driving the claw to move to a locking position close to the heat preservation cover plate and an unlocking position away from the heat preservation cover plate.

[0006] The pot lid opening and closing structure provided by the present invention further includes: a micro switch, provided on the heat preservation cover plate and in front of the locking path of the transmission member, and the claw is in contact with the micro switch when in the locking position.

[0007] The pot lid opening and closing structure provided by the present invention further includes: the transmission member is a rack structure provided on at least a part of the pulling member, and the rack structure is adapted to cooperate with the driving motor.

[0008] The pot lid opening and closing structure provided by the present invention, the transmission member is a rotating ring provided above the pulling member, and a force transmission member is provided on the rotating ring, and the force transmission member is used to convert the rotation of the rotating ring into a linear motion of the pulling member.

[0009] The pot lid opening and closing structure provided by the present invention, the force transmission member includes: a sliding groove provided on the rotating ring, at least a part of the rotating ring is provided with a rack, and along the direction from the unlocking position to the locking position, the inner diameter of the sliding groove gradually decreases; a vertical member provided on the pulling member and adapted to be embedded inside the sliding groove.

[0010] The pot lid opening and closing structure provided by the present invention, the vertical member is a pin shaft, and a threaded hole matching with the pin shaft is provided on the pulling member.

[0011] The pot lid opening and closing structure provided by the present invention, in front of the movement path from the unlocking position to the locking position, a kidney-shaped groove is connected to the sliding groove, and the kidney-shaped groove has an equal inner diameter.

[0012] The pot lid opening and closing structure provided by the present invention, a limiting rib for the transmission member to slide is provided on the heat preservation cover plate.

[0013] The pot lid opening and closing structure provided by the present invention, a slideway for the pulling member to move is provided on the heat preservation cover plate below the pulling member.

[0014] The pot lid opening and closing structure provided by the present invention, two radial plates symmetrically arranged at the lower part of the pulling member and in the same direction as the movement direction of the claw are provided, and the radial plates are adapted to be embedded inside the slideway below them.

[0015] The pot lid opening and closing structure provided by the present invention, there are two groups of the sliding grooves and they are symmetrically arranged with the center of the rotating ring as the center, and the vertical members of the two groups of pulling members are respectively arranged in each sliding groove.

[0016] The pot lid opening and closing structure provided by the present invention further includes: an unlocking assembly, the unlocking assembly includes an unlocking gear, the unlocking gear is arranged on one side of the driving gear and is used to drive the transmission member to move between the locking position and the unlocking position.

[0017] The pot lid opening and closing structure provided by the present invention, the unlocking assembly further includes: a driving member, the driving member includes an unlocking rack and is used to act on the unlocking gear; a key, one end is adapted to abut against the unlocking rack and drive the unlocking rack to move.

[0018] The pot lid opening and closing structure provided by the present invention, the driving member further includes: a bracket, a retaining rib is provided on the bracket, a movable rib is provided on the key, a first through hole for the movable rib to move is provided on the retaining rib, and a groove for accommodating the unlocking rack is provided on the bracket.

[0019] The pot lid opening and closing structure provided by the present invention, a movable rib is provided on the key, a spring is provided on the key, and one end of the spring abuts against the retaining rib.

[0020] The pot lid opening and closing structure provided by the present invention, the button further includes a plurality of anti - detachment ribs arranged parallel to the movable ribs. One end of the anti - detachment rib close to the unlocking rack is provided with a stop block. A second through - hole is arranged at a position corresponding to the anti - detachment rib on the stop rib, and the stop block is adapted to be stuck on the second through - hole.

[0021] The pot lid opening and closing structure provided by the present invention, a receiving cavity for receiving the unlocking gear is further arranged on the bracket.

[0022] The present invention also provides a cooking device, including the pot lid opening and closing structure provided by the present invention. In the present invention, the cooking device is an electric pressure cooker.

[0023] The technical solution of the present invention has the following advantages:

[0024] 1. The pot lid opening and closing structure provided by the present invention includes: a pot lid, on which a heat - preservation cover plate is arranged; a claw assembly arranged on the heat - preservation cover plate, the claw assembly includes: at least one claw, which extends in a direction away from the inner pot; a pulling member connected to the claw and moving synchronously with the claw; a claw driving device, including: a driving motor arranged on the heat - preservation cover plate, on which a driving gear is arranged; a transmission member acting between the driving motor and the pulling member at the same time, for driving the claw to move to a locking position close to the heat - preservation cover plate and an unlocking position away from the heat - preservation cover plate.

[0025] In the present invention, the heat - preservation cover plate is connected to the inner pot through the claw, so as to ensure that the temperature and pressure in the inner pot will not be dissipated during the cooking process.

[0026] When locking or unlocking is required, the driving motor drives the transmission member to move through the driving gear. The transmission member further drives the pulling member, and the pulling member drives the claw to move. Compared with the prior art in which the lid is locked or opened manually, the movement of the claw can be more precise by driving the claw with a driving motor. At the same time, since the torque generated by the driving motor is certain, the situation of insufficient driving force caused by manual driving can be avoided.

[0027] 2. The pot lid opening and closing structure provided by the present invention further includes: a micro - switch arranged on the heat - preservation cover plate and in front of the locking path of the transmission member. When the claw is in the locking position, the pulling member is in contact with the micro - switch.

[0028] In the present invention, the micro - switch is connected to the driving motor. When the claw completes the locking action, the pulling member touches the micro - switch. At this time, the micro - switch controls the driving motor to stop rotating, so as to avoid the claw moving forward and causing the motor to burn out.

[0029] 3. The pot lid opening and closing structure provided by the present invention, wherein the transmission member is a rotating ring arranged above the pulling member, a force transmission member is arranged on the rotating ring, and the force transmission member is used to convert the rotation of the rotating ring into a linear motion of the pulling member.

[0030] Since the driving gear rotates by itself, the pulling member is set as a rotating ring, so that a rotating pair can be formed. The rotating pair has stable transmission and can perform reciprocating motion.

[0031] At the same time, by setting the force transmission member to convert the rotation of the rotating ring into a linear motion of the pulling member, since the rotation of the rotating ring is relatively smooth, the smooth motion of the pulling member can be ensured, and thus the excessive motion of the claw can be avoided.

[0032] 4. The pot lid opening and closing structure provided by the present invention, the force transmission member includes: a sliding groove arranged on the rotating ring, at least a part of the rotating ring is provided with a rack, and along the direction from the unlocking position to the locking position, the inner diameter of the sliding groove gradually decreases; a vertical member arranged on the pulling member and adapted to be embedded inside the sliding groove.

[0033] When the vertical member drives the rotating ring to rotate by moving inside the sliding groove, since the inner diameter of the sliding groove gradually decreases along the direction from the unlocking position to the locking position, the pulling member can be driven to move towards the center of the rotating ring, thereby driving the claw to lock the heat preservation cover plate. When the rotating ring moves in the reverse direction, the inner diameter of the sliding groove gradually increases, and at this time, the claw can be driven to unlock the heat preservation cover plate.

[0034] 5. The pot lid opening and closing structure provided by the present invention, the vertical member is a pin shaft, and a threaded hole matched with the pin shaft is arranged on the pulling member. The combination of the pin shaft and the threaded hole can facilitate the disassembly operation, and thus facilitate the cleaning of the heat preservation cover plate.

[0035] 6. The pot lid opening and closing structure provided by the present invention, a waist-shaped groove is connected to the sliding groove in front of the movement path from the unlocking position to the locking position, and the waist-shaped groove has an equal inner diameter.

[0036] By setting the waist-shaped groove, a certain buffering effect can be achieved, leaving a margin for the rotation of the driving motor, so as to avoid the motor continuing to rotate under the action of inertia when the control of the motor is stopped, causing damage to the motor itself.

[0037] 7. The pot lid opening and closing structure provided by the present invention, a limiting rib for the sliding of the transmission member is arranged on the heat preservation cover plate.

[0038] By setting the limiting rib, the transmission member can move stably relative to the heat preservation cover plate, thereby improving the stability of the transmission.

[0039] 8. The pot lid opening and closing structure provided by the present invention, two radial plates consistent with the movement direction of the claw are symmetrically arranged at the lower part of the pulling member, and the radial plates are adapted to be embedded inside the slideway below them.

[0040] By setting the combination of the radial plates and the claws, the pulling member can move along the extension direction of the slideway, so as to ensure that the pulling member will not shift during the movement.

[0041] 9. The pot lid opening and closing structure provided by the present invention, there are two groups of sliding grooves which are symmetrically arranged with the center of the rotating ring as the center, and the vertical members of the two groups of pulling members are respectively arranged in each sliding groove.

[0042] Due to the symmetrical arrangement of the two groups of sliding grooves, the two groups of symmetrically arranged pulling members can move synchronously, that is, lock or unlock synchronously. Thus, a set of driving motors is used to realize the stable locking of the heat preservation cover plate.

[0043] 10. The pot lid opening and closing structure provided by the present invention further includes: an unlocking component, the unlocking component includes an unlocking gear, and the unlocking gear is arranged on one side of the driving gear to drive the transmission member to move between the locked position and the unlocked position.

[0044] In the present invention, locking and unlocking are realized through a driving motor. However, once a power failure occurs, the driving motor cannot work at this time, resulting in the inability to open the lid. Once the lid cannot be opened for a long time, the food in the inner pot will become stale or even stinky.

[0045] In the present invention, to solve the above problems, an unlocking component is introduced. When a power failure occurs, an external force acts on the unlocking gear, and the unlocking gear further drives the rack structure, thereby realizing manual unlocking.

[0046] 11. The unlocking component of the pot lid opening and closing structure provided by the present invention further includes: a driving member, the driving member includes an unlocking rack for acting on the unlocking gear; a key, one end of which is adapted to abut against the unlocking rack and drive the unlocking rack to move.

[0047] By setting the key and the unlocking rack, an external force can act on the key, and then drive the unlocking rack to move, so as to realize unlocking operation with a smaller force under manual action.

[0048] 12. The pot lid opening and closing structure provided by the present invention, the key is provided with movable ribs, and the key is provided with a spring, and one end of the spring abuts against the retaining rib. By setting the spring, the key can be driven to automatically return to its original position.

[0049] 13. The pot lid opening and closing structure provided by the present invention, the button further includes a plurality of anti-disengagement ribs arranged in parallel with the movable ribs, a stop block is arranged at one end of the anti-disengagement rib close to the unlocking rack, a second through hole is arranged at a position on the blocking rib corresponding to the anti-disengagement rib, and the stop block is adapted to be stuck on the through hole.

[0050] First of all, by setting the combination of the anti-disengagement rib and the second through hole, the stable movement of the button relative to the bracket can be realized, and the button can be prevented from tilting when the force is uneven. In addition, due to the setting of the stop block, when the stop block moves to the position of the blocking rib under the action of the spring, the stop block abuts against the position of the second through hole, which can prevent the button from disengaging from the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0052] Figure 1 It is a schematic structural diagram of the pot lid opening and closing structure provided by the present invention in the locked state;

[0053] Figure 2 For Figure 1 It is a schematic structural diagram of the pot lid opening and closing structure shown in the unlocked state;

[0054] Figure 3 It is a schematic structural diagram of the pot lid opening and closing structure provided by the present invention and its unlocking assembly;

[0055] Figure 4 It is a partial schematic structural diagram of the bracket and the button provided by the present invention;

[0056] Figure 5 It is an assembly schematic diagram between the unlocking rack and the bracket provided by the present invention;

[0057] Figure 6 It is a schematic structural diagram of the button provided by the present invention;

[0058] Figure 7 For Figure 1 It is a cross-sectional schematic diagram of the pot lid opening and closing structure shown;

[0059] Figure 8 It is a schematic structural diagram of the heat preservation cover plate, the claw assembly and the micro switch of the pot lid opening and closing structure in the unlocked state;

[0060] Figure 9Schematic diagram of the heat preservation cover plate, claw assembly and microswitch of the pot lid opening and closing structure in the locked state;

[0061] Description of the reference numerals:

[0062] 1 - Inner lid; 2 - Claw; 3 - Pulling member; 4 - Driving motor; 5 - Driving gear; 6 - Transmission member; 7 - Microswitch; 8 - Sliding groove; 9 - Vertical member; 10 - Waist-shaped groove; 11 - Limiting rib; 12 - Radial plate; 13 - Unlocking gear; 14 - Unlocking rack; 15 - Button; 16 - Bracket; 17 - Stop rib; 171 - First through hole; 172 - Second through hole; 18 - Groove; 19 - Movable rib; 21 - Anti-detachment rib; 22 - Stop block; 101 - Slideway; 23 - Heat preservation cover plate; 24 - Inner pot. Detailed implementation manners

[0063] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0064] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0066] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0067] Embodiment 1

[0068] This embodiment provides a pot lid opening and closing structure, asFigure 1 , Figure 2 , Figure 3 and Figure 7 As shown in Figure 3 , Figure 7 , etc., it includes: a pot lid, on which an inner lid 1 is provided, and a heat preservation cover plate 23 is provided on the inner lid; a claw assembly, which is arranged on the inner lid 1, and the claw assembly includes: at least one claw 2, and the claw extends in a direction away from the inner pot; a pulling member 3, which is connected to the claw 2 and moves synchronously with the claw 2; a claw driving device, which includes: a driving motor 4, which is arranged on the inner lid 1, and a driving gear 5 is arranged on it; a transmission member 6, which acts between the driving motor 4 and the pulling member 3 at the same time, and is used to drive the claw to move close to the locking position of the inner lid 1 and away from the unlocking position of the inner lid 1.

[0069] In this embodiment, the inner lid 1 is connected to the inner pot by the claw 2. At this time, the heat preservation cover plate is clamped between the inner lid 1 and the inner pot 24, so as to ensure that the temperature and pressure in the inner pot will not be dissipated during the cooking process.

[0070] When locking or unlocking is required, the driving motor 4 drives the transmission member 6 to move through the driving gear 5. The transmission member 6 further drives the pulling member 3, and the pulling member 3 drives the claw 2 to move. Compared with the prior art in which the lid is locked or opened manually, driving the movement of the claw 2 by the driving motor 4 can achieve more precise movement of the claw 2. At the same time, the torque generated by the driving motor 4 is certain, which can avoid the situation of insufficient driving force caused by manual driving.

[0071] The pot lid opening and closing structure provided in this embodiment further includes: a microswitch 7, which is arranged on the inner lid 1 and in front of the locking path of the transmission member 6. When the claw is in the locking position, the pulling member 3 contacts the microswitch 7. The microswitch 7 is connected to the driving motor 4. When the locking action of the card slot is completed, the pulling member 3 touches the microswitch 7. At this time, the microswitch 7 controls the driving motor 4 to stop rotating, so as to avoid the claw 2 moving forward and causing the motor to burn out.

[0072] Specifically, the microswitch 7 is connected to the inner lid 1 by screws. The microswitch 7 is arranged opposite to the pulling member 3. When the pulling member 3 acts on the microswitch 7, the microswitch 7 controls the driving motor 4 to stop rotating.

[0073] The pot lid opening and closing structure provided in this embodiment further includes: the transmission member 6 is a rack structure arranged on at least a part of the pulling member 3, and the rack structure is adapted to cooperate with the driving motor 4.

[0074] In this embodiment, the rack structure can be directly arranged on the pulling member 3.

[0075] As a preferred embodiment, in this embodiment, as Figure 1 shown, the transmission member 6 is a rotating ring arranged above the pulling member 3, and a force transmission member is arranged on the rotating ring. The force transmission member is used to convert the rotation of the rotating ring into a linear motion of the pulling member 3. Since the driving gear 5 rotates by itself, the pulling member 3 is set as a rotating ring, so that a rotating pair can be formed. The rotating pair transmission is stable and can perform reciprocating motion. At the same time, by setting the force transmission member to convert the rotation of the rotating ring into a linear motion of the pulling member 3, since the rotation of the rotating ring is relatively smooth, the smooth motion of the pulling member 3 can be ensured, and thus the excessive motion of the claw 2 can be avoided.

[0076] The pot lid opening and closing structure provided in this embodiment, as Figure 1 shown, the force transmission member includes: a sliding groove 8 arranged on the rotating ring, at least a part of the rotating ring is provided with a rack, and along the direction from the unlocking position to the locking position, the inner diameter of the sliding groove 8 gradually decreases; a vertical member 9 arranged on the pulling member 3 and adapted to be embedded inside the sliding groove 8. When the vertical member 9 drives the rotating ring to rotate by moving inside the sliding groove 8, since the inner diameter of the sliding groove 8 gradually decreases along the direction from the unlocking position to the locking position, the pulling member 3 can be driven to move towards the center of the rotating ring, thereby driving the claw 2 to lock the inner lid 1. When the rotating ring moves in the reverse direction, the inner diameter of the sliding groove 8 gradually increases, and at this time, the claw 2 can be driven to unlock the inner lid 1.

[0077] Specifically, the vertical member 9 can be integrally formed on the pulling member 3, for example, directly formed by an injection molding process. As a preferred embodiment, in this embodiment, the vertical member 9 is separately arranged on the pulling member 3, the vertical member 9 is a pin shaft, and the pulling member 3 is provided with a threaded hole matching with the pin shaft.

[0078] The pot lid opening and closing structure provided in this embodiment, as Figure 1 、 Figure 2 and Figure 3 shown, in front of the movement path along the unlocking position to the locking position, a waist-shaped groove 10 is connected to the sliding groove 8, and the waist-shaped groove 10 has an equal inner diameter. By setting the waist-shaped groove 10, a certain buffering effect can be achieved. At this time, even if the driving motor 4 is still rotating, the claw 2 will stop moving. By setting the waist-shaped groove 10, a margin can be left for the rotation of the driving motor 4, so as to avoid the driving motor 4 continuing to rotate under the action of inertia when the control of the motor is stopped, causing damage to the motor itself.

[0079] The pot lid opening and closing structure provided in this embodiment, as Figure 3As shown, a limiting rib 11 for the sliding of the transmission member 6 is provided on the inner lid 1. By providing the limiting rib 11, the transmission member 6 can move stably relative to the inner lid 1, thereby improving the stability of the transmission.

[0080] Specifically, the limiting rib 11 extends upward and is located on both sides of the transmission member 6. As Figure 3 shown, it can prevent the transmission member 6 from moving radially.

[0081] The pot lid opening and closing structure provided in this embodiment, as Figure 8 and Figure 9 shown, a slideway 101 for the movement of the pulling member 3 is provided on the inner lid 1 below the pulling member 3. Specifically, two radial plates 12 consistent with the movement direction of the claw 2 are symmetrically arranged at the lower part of the pulling member 3, and the radial plates 12 are adapted to be embedded inside the slideway 101 below them. By providing the combination of the radial plates 12 and the slideway 101, the pulling member 3 can move along the extension direction of the slideway 101, thereby ensuring that the pulling member 3 does not shift during the movement.

[0082] The pot lid opening and closing structure provided in this embodiment, as Figures 1-3 any one shown, there are two sets of the sliding grooves 8 and they are symmetrically arranged with respect to the center of the rotating ring, and the vertical members 9 of the two pulling members 3 are respectively arranged in each sliding groove 8.

[0083] Since the two sets of sliding grooves 8 are symmetrically arranged, the two symmetrically arranged pulling members 3 can move synchronously, that is, lock or unlock synchronously. Thus, a set of driving motor 4 is used to stably lock the inner lid 1.

[0084] Embodiment 2

[0085] The pot lid opening and closing structure provided in this embodiment is made on the basis of Embodiment 1. In this embodiment, as Figure 3 shown, the pot lid opening and closing structure further includes: an unlocking assembly, and the unlocking assembly includes an unlocking gear 13. The unlocking gear 13 is arranged on one side of the driving gear 5 and is used to drive the transmission member 6 to move between the locked position and the unlocked position.

[0086] In Embodiment 1, locking and unlocking are achieved by the driving motor 4. However, once a power failure occurs, at this time the driving motor 4 cannot work, resulting in the inability to open the lid. Once the lid cannot be opened for a long time, the food in the inner pot will become smelly.

[0087] In this embodiment, in order to solve the above problem, an unlocking assembly is introduced. When a power failure occurs, an external force acts on the unlocking gear 13, and the unlocking gear 13 further drives the rack structure, thereby realizing manual unlocking.

[0088] In this embodiment, Figure 3 As shown, the unlocking assembly further includes: a driving member, which includes an unlocking rack 14 for acting on the unlocking gear 13; and a button 15, one end of which is suitable for pressing against the unlocking rack and driving the unlocking rack 14 to move.

[0089] In this embodiment, Figure 4 and Figure 5 As shown, the driving member further includes: a bracket 16, a retaining rib 17 is provided on the bracket 16, a first through hole 171 for the movement of the key 15 is provided on the retaining rib 17, and a groove 18 for accommodating the unlocking rack is provided on the bracket 16. First, by providing the anti-slip rib 21, the key can be stably moved to avoid tilting. In addition, by providing the stopper 22, the key can be prevented from falling off from the bracket 16.

[0090] In the pot lid opening and closing structure provided in this embodiment, the button 15 is provided with a movable rib 19 , and the button 15 is provided with a spring, one end of the spring rests on the retaining rib 17 .

[0091] The pot cover opening and closing structure provided in this embodiment is as follows: Figure 6 As shown, the button 15 also includes a plurality of anti-slip ribs 21 arranged in parallel with the active ribs 19, and a stopper 22 is arranged at one end of the anti-slip rib 21 close to the unlocking rack. Specifically, the stopper 22 itself extends to both sides of the anti-slip rib 21, as shown in FIG. Figure 5 As shown, a second through hole 172 is provided on the retaining rib 17 at a position corresponding to the anti-slip rib 21 , and the stopper 22 is suitable for being stuck in the second through hole 172 .

[0092] The pot cover opening and closing structure provided in this embodiment is as follows: Figure 3 As shown, the bracket 16 is also provided with a receiving cavity for receiving the unlocking gear 13. When the unlocking rack 14 moves, the unlocking gear 13 rotates in the receiving cavity, and the receiving cavity itself can prevent the unlocking gear 13 from falling out.

[0093] Example 3

[0094] This embodiment also provides a cooking device, including the pot cover opening and closing structure provided in Embodiment 1 and Embodiment 2.

[0095] In this embodiment, the cooking device is an electric pressure cooker, and may also be an electric rice cooker, an electric steamer, or other devices that require cooking operations.

[0096] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A pot lid opening and closing structure, characterized in that, Comprising: A pot lid, on which an inner lid (1) is provided, and a heat preservation cover plate (23) is provided on the inner lid (1); A claw assembly, provided on the inner lid (1), the claw assembly comprising: at least one claw (2), the claw (2) extending in a direction away from the inner pot; a pulling member (3), connected to the claw (2) and moving synchronously with the claw (2); A claw driving device, comprising: A driving motor (4), provided on the inner lid (1), on which a driving gear (5) is provided; A transmission member (6), acting between the driving motor (4) and the pulling member (3) at the same time, for driving the claw (2) to move to a locking position close to the inner lid (1) and an unlocking position away from the inner lid (1); It further comprises: an unlocking assembly, the unlocking assembly comprising an unlocking gear (13), the unlocking gear (13) being provided on one side of the driving gear (5) for driving the transmission member (6) to move between the locking position and the unlocking position; The unlocking assembly further comprises: a driving member, the driving member comprising: An unlocking rack (14) for acting on the unlocking gear (13); A bracket (16), on which a stop rib (17) is provided; A key (15), one end of which is adapted to abut against the unlocking rack and drive the unlocking rack (14) to move; an active rib (19) is provided on the key (15); the key (15) further comprises a plurality of anti - detachment ribs (21) arranged in parallel with the active rib (19), a stop block (22) is provided at one end of the anti - detachment rib (21) close to the unlocking rack, and a second through - hole (172) is provided at a position on the stop rib (17) corresponding to the anti - detachment rib (21), and the stop block (22) is adapted to be stuck in the second through - hole.

2. The lid opening and closing structure according to claim 1, characterized in that, It further comprises: A micro - switch (7), connected to the driving motor (4), provided on the inner lid (1) and in front of the locking path of the transmission member (6), and the pulling member (3) is in contact with the micro - switch (7) when the claw (2) is in the locking position.

3. The lid opening and closing structure according to claim 2, wherein, It further comprises: The transmission member (6) is a rack structure provided on at least a part of the pulling member (3), and the rack structure is adapted to cooperate with the driving motor (4).

4. The lid opening and closing structure according to claim 2, wherein, The transmission member (6) is a rotating ring provided above the pulling member (3), and a force - transmitting member is provided on the rotating ring, and the force - transmitting member is used for converting the rotation of the rotating ring into the linear motion of the pulling member (3).

5. The lid opening and closing structure according to claim 4, wherein, The force - transmitting member comprises: A sliding groove (8) provided on the rotating ring, at least a part of the rotating ring is provided with a rack, and along the direction from the unlocking position to the locking position, the inner diameter of the sliding groove (8) gradually decreases; A vertical member (9) provided on the pulling member (3) and adapted to be embedded inside the sliding groove (8).

6. The lid opening and closing structure according to claim 5, characterized in that, The vertical member (9) is a pin shaft, and a threaded hole cooperating with the pin shaft is provided on the pulling member (3).

7. The lid opening and closing structure according to claim 5 or 6, characterized in that In front of the movement path from the unlocking position to the locking position, a waist - shaped groove (10) is connected to the sliding groove (8), and the waist - shaped groove (10) has a constant inner diameter.

8. The lid opening and closing structure according to claim 4, characterized in that, The inner cover (1) is provided with limiting rib strips (11) for the sliding of the transmission member (6).

9. The lid opening and closing structure according to claim 4 or 8, characterized in that, Below the pulling member (3) on the inner cover (1), a slideway (101) for the movement of the pulling member (3) is provided.

10. The lid opening and closing structure according to claim 9, characterized in that, Two radial plates (12) symmetrically arranged at the lower part of the pulling member (3) and in the same movement direction as the claw (2) are adapted to be embedded inside the slideway (101) below it.

11. The lid opening and closing structure according to claim 5 or 6, characterized in that, There are two groups of the sliding grooves (8), which are symmetrically arranged with the center of the rotating ring as the center, and the vertical members (9) of the two groups of pulling members (3) are respectively arranged in each sliding groove (8).

12. The lid opening and closing structure according to claim 1, characterized in that, The driving member further includes: a first through hole (171) for the movement of the movable rib (19) is provided on the retaining rib (17), and a groove (18) for accommodating the unlocking rack is provided on the bracket (16).

13. The lid opening and closing structure according to claim 12, characterized in that, A spring is provided on the button (15), and one end of the spring abuts against the retaining rib (17).

14. The lid opening and closing structure according to claim 12 or 13, characterized in that, The bracket (16) is further provided with a receiving cavity for accommodating the unlocking gear (13).

15. A cooking device, characterized in that, It includes the pot lid opening and closing structure according to any one of claims 1-14.

16. The cooking device according to claim 15, wherein, The cooking device is an electric pressure cooker.

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