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. The driving device includes: a driving rack; a driving source, on which a driving gear is provided, the driving gear is engaged with the driving rack, a claw assembly is connected to the driving rack, the claw assembly extends towards the inner pot, the claw assembly has a locking position close to the heat preservation cover plate and an unlocking position away from the heat preservation cover plate; an unlocking assembly is arranged on the heat preservation cover plate, the unlocking assembly includes an unlocking gear, the unlocking gear acts on the driving device to drive the driving claw assembly to move between the locking position and the unlocking position. In the present invention, by providing the unlocking assembly and arranging the unlocking gear on the driving device, in case of power failure, the unlocking gear can be manually driven at this time, so as to drive the driving gear to drive the claw to move, thereby realizing manual unlocking.

Description

Technical Field

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

[0002] For cooking devices, the 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, locking and unlocking are usually achieved by a driving motor. However, once a power failure occurs, the driving motor cannot work at this time, resulting in the inability to perform the lid opening operation. Once the lid cannot be opened for a long time, the food in the inner pot will become stale or even stinky. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that once a power failure occurs, the lid cannot be opened when using a driving motor for lid locking operation.

[0005] To this end, the present invention provides a pot lid opening and closing structure, including: a driving device disposed on the inner lid, the driving device including: a driving rack; a driving source on which a driving gear is disposed, the driving gear cooperating with the driving rack, a claw assembly being connected to the driving rack, the claw assembly extending towards the direction of the inner pot, the claw assembly having a locking position close to the inner lid and an unlocking position away from the inner lid; further including: an unlocking assembly disposed on the inner lid, the unlocking assembly including an unlocking gear, the unlocking gear acting on the driving device to drive the driving claw assembly to move between the locking position and the unlocking position.

[0006] For the pot lid opening and closing structure provided by the present invention, the unlocking assembly includes: a bracket disposed on the inner lid, the unlocking gear being rotatably disposed on the bracket.

[0007] For the pot lid opening and closing structure provided by the present invention, an unlocking shaft is connected to the unlocking gear, and an unlocking groove and / or an unlocking rib are provided at one end of the unlocking shaft away from the unlocking gear.

[0008] For the pot lid opening and closing structure provided by the present invention, the unlocking groove is a cross groove.

[0009] For the pot lid opening and closing structure provided by the present invention, the unlocking gear meshes with the driving gear.

[0010] The pot lid opening and closing structure provided by the present invention, wherein the driving device and the unlocking assembly are arranged on a support plate, and the support plate is arranged above the inner lid.

[0011] The pot lid opening and closing structure provided by the present invention further includes a heat preservation cover plate arranged below the inner lid, and a jacking structure is arranged between the heat preservation cover plate and the inner lid. The jacking structure is used to drive the unlocking assembly to tilt away from the inner pot under the drive of the heat preservation cover plate.

[0012] The jacking structure of the pot lid opening and closing structure provided by the present invention includes: a jacking rod, the bottom end of which is connected to the heat preservation cover plate, and the top end of which abuts against the unlocking assembly; a spring, and the jacking rod is arranged on the spring.

[0013] In the pot lid opening and closing structure provided by the present invention, the inner lid is provided with a receiving cavity for receiving the jacking rod and the spring, and a through hole for the jacking rod to pass through is arranged in the receiving cavity.

[0014] In the pot lid opening and closing structure provided by the present invention, a sealing ring is arranged on the heat preservation cover plate, and the sealing ring extends towards the inner lid.

[0015] The sealing ring of the pot lid opening and closing structure provided by the present invention includes: a covering part covering the heat preservation cover plate; a supporting part connected to the covering part through a connecting part.

[0016] In the pot lid opening and closing structure provided by the present invention, there are two groups of driving racks arranged along the height direction, and a driving gear is arranged between the two groups of driving racks.

[0017] The present invention also provides a cooking device, including: the pot lid opening and closing structure provided by the present invention; a pot body, on which a receiving cavity for receiving an inner pot is arranged, and the pot lid opening and closing structure is arranged in the receiving cavity; an unlocking hole is formed on one side of the pot body or the pot lid where the pot lid opening and closing structure is located, and the unlocking hole is arranged opposite to the unlocking shaft of the pot lid opening and closing structure.

[0018] In the cooking device provided by the present invention, the supporting part of the sealing ring of the pot lid opening and closing structure is arranged on the inner wall of the pot body.

[0019] In the cooking device provided by the present invention, a hollow column extends in the direction of the unlocking shaft of the unlocking hole.

[0020] The cooking device provided by the present invention further includes: a knob arranged on the hollow column, and unlocking ridges and / or unlocking grooves that cooperate with the unlocking grooves and / or the unlocking ridges are arranged on the knob.

[0021] In the cooking device provided by the present invention, a cover body is arranged on the knob, and a return spring is arranged in the cover body.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. For the pot lid opening and closing structure provided by the present invention, the driving device includes: a driving rack; a driving source provided with a driving gear, the driving gear is engaged with the driving rack, a claw assembly is connected to the driving rack, the claw assembly extends towards the inner pot, and the claw assembly has a locking position close to the heat preservation cover plate and an unlocking position away from the heat preservation cover plate; an unlocking assembly is arranged on the heat preservation cover plate, and the unlocking assembly includes an unlocking gear, and the unlocking gear acts on the driving device to drive the driving claw assembly to move between the locking position and the unlocking position.

[0024] In the prior art, since the driving device uses a driving motor to realize the movement of the claw, once a power outage occurs, the claw cannot be unlocked and the pot lid cannot be opened, resulting in food spoilage or deterioration.

[0025] In the present invention, by providing an unlocking assembly, the unlocking gear is arranged on the driving device. Once a power failure occurs, the unlocking gear can be manually driven at this time, and then the driving gear drives the claw to move, so as to realize manual unlocking.

[0026] 2. For the pot lid opening and closing structure provided by the present invention, an unlocking shaft is connected to the unlocking gear, and an unlocking groove and / or an unlocking rib are arranged at one end of the unlocking shaft away from the unlocking gear. By providing the unlocking shaft, an external force can directly act on the unlocking shaft, and the rotation of the unlocking shaft is realized through the cooperation between the groove and the rib, and finally the unlocking operation is realized.

[0027] 3. For the cooking device provided by the present invention, a jacking structure is arranged between the unlocking assembly and the heat preservation cover plate, and the jacking structure is used to drive the unlocking assembly to tilt away from the inner pot under the drive of the heat preservation cover plate. An unlocking hole is formed on one side of the pot body or the pot lid where the pot lid opening and closing structure is located, and the unlocking hole is arranged opposite to the unlocking shaft of the pot lid opening and closing structure.

[0028] When the pressure in the pot increases, the heat preservation cover plate pushes the ejector rod, and the ejector rod jacks up the manual pot lid opening assembly, and the unlocking shaft is misaligned with the unlocking hole. At this time, a screwdriver or other external force member cannot contact the unlocking shaft after passing through the unlocking hole, and thus the unlocking operation cannot be performed. The above structural setting method can prevent risks such as forced pot lid opening and explosion when there is pressure in the appliance.

[0029] At the same time, when there is no pressure in the pot, the heat preservation cover plate will drive the unlocking shaft to sink. At this time, a screwdriver or other tool can act on the unlocking shaft through the unlocking hole to realize safe pot lid opening.

[0030] 4. In the cooking device provided by the present invention, a sealing ring is provided at a position corresponding to the inner pot of the heat preservation cover plate, and the sealing ring extends towards the inner pot.

[0031] A sealing ring is provided at a position corresponding to the inner pot of the heat preservation cover plate, and the sealing ring extends towards the inner pot. Since the sealing ring extends towards the inner pot, when the heat preservation cover plate moves upward under the pressure of the inner pot, due to the fact that the sealing ring itself extends towards the inner pot, even if the heat preservation cover plate moves upward by a certain distance, at this time, due to the limitation of the sealing ring, the heat preservation cover plate will not be separated from the inner pot, nor will it shake radially. At the same time, when the pressure of the inner pot decreases, due to the effect of the sealing ring, the heat preservation cover plate can return to the inner pot along the original path, thereby ensuring the position accuracy between the heat preservation cover plate and the inner pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 following drawings 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.

[0033] Figure 1 It is a schematic structural diagram between the driving rack, the driving gear and the claw assembly in the cooking device provided by the present invention;

[0034] Figure 2 It is a schematic structural diagram of the unlocking assembly provided by the present invention;

[0035] Figure 3 It is a schematic structural diagram of the unlocking shaft provided by the present invention;

[0036] Figure 4 It is an assembly schematic diagram between the unlocking assembly and the jacking structure provided by the present invention;

[0037] Figure 5 It is a schematic diagram of the cooking device provided by the present invention during the unlocking process;

[0038] Figure 6 It is a schematic diagram of the cooking device provided by the present invention when the jacking structure performs a jacking action;

[0039] Figure 7 It is a schematic diagram of the cooking device provided by the present invention when the jacking structure is not performing a jacking action;

[0040] Description of the reference numerals:

[0041] 1 - Inner cover; 2 - Driving rack; 3 - Driving motor; 4 - Unlocking gear; 5 - Bracket; 6 - Unlocking shaft; 61 - Unlocking groove; 7 - Support plate; 8 - Heat preservation cover plate; 9 - Push rod; 10 - Spring; 11 - Accommodating cavity; 12 - Through hole; 13 - Sealing ring; 131 - Wrapping part; 132 - Support part; 14 - Pot body; 15 - Unlocking hole; 16 - Hollow column; 17 - Knob; 18 - Cover body; 19 - Return spring; 20 - Driving gear; 21 - Claw assembly. Detailed implementation manners

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. 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.

[0043] 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 should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "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.

[0045] 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.

[0046] Embodiment 1

[0047] This embodiment provides a pot lid opening and closing structure, as Figure 1-7As shown in the figure, it includes: a driving device, which is arranged on the heat preservation cover plate 8. The driving device includes: a driving rack 2; a driving source 3, on which a driving gear 20 is arranged. The driving gear 20 is matched with the driving rack 2. A claw assembly 21 is connected to the driving rack 2. The claw assembly 21 extends towards the inner pot. The claw assembly 21 has a locking position close to the heat preservation cover plate 8 and an unlocking position far from the heat preservation cover plate 8. It also includes: an unlocking assembly, which is arranged on the heat preservation cover plate 8. The unlocking assembly includes an unlocking gear 4. The unlocking gear 4 acts on the driving device to drive the driving claw assembly 21 to move between the locking position and the unlocking position.

[0048] In the prior art, since the driving device realizes the movement of the claw through the driving source, once a power outage occurs, the claw cannot be unlocked and the lid cannot be opened, resulting in the food becoming stale or deteriorating.

[0049] In this embodiment, the driving source 3 is a driving motor, which is arranged on the inner lid through fixing screws. As a variant, the driving source can also be a cylinder. The reciprocating movement of the cylinder is used to drive the driving gear 20. When a cylinder is adopted, the driving gear 20 needs to be fixed on the moving end of the cylinder, and the driving rack 2 is pulled through the cooperation of the driving gear and the driving rack.

[0050] In this embodiment, by arranging the unlocking assembly, the unlocking gear 4 is arranged on the driving device. Once a power failure occurs, at this time, the unlocking gear 4 can be manually driven, and then the driving gear 20 is driven to drive the claw to move, so as to realize manual unlocking.

[0051] For the lid opening and closing structure provided in this embodiment, the unlocking assembly includes: a support wheel 5, which is arranged on the heat preservation cover plate 8. The unlocking gear 4 is rotatably arranged on the support wheel 5.

[0052] Specifically, a connection hole is arranged on the support wheel 5, and an extension part is arranged on the unlocking gear 4. The extension part is inserted into the connection hole, or a bearing is arranged between the extension part and the connection hole to realize the rotation of the unlocking gear 4.

[0053] For the lid opening and closing structure provided in this embodiment, an unlocking shaft 6 is connected to the unlocking gear 4. One end of the unlocking shaft 6 far from the unlocking gear 4 is provided with an unlocking groove 61 and / or an unlocking rib.

[0054] Specifically, one end of the unlocking shaft 6 is connected to the connection hole of the unlocking gear 4. The unlocking tool can be a screwdriver, and an unlocking rib or an unlocking groove 61 is correspondingly arranged on the screwdriver. When the screwdriver acts on the unlocking shaft 6, the unlocking rib is embedded into the unlocking groove 61 to realize the driving of the unlocking shaft 6.

[0055] The pot lid opening and closing structure provided in this embodiment, the unlocking groove 61 is a cross groove. As a variant, one end of the unlocking shaft 6 can adopt various different shapes, and the specific shape is not overly limited in this embodiment.

[0056] For the pot lid opening and closing structure provided in this embodiment, the unlocking gear 4 can act on the driving rack 2 or on the driving gear 20. In this embodiment, as a preferred implementation manner, the unlocking gear 4 meshes with the driving gear 20. When an unlocking operation is required, an external force acts on the unlocking shaft 6, the unlocking shaft 6 drives the unlocking gear 4 to rotate, the unlocking gear 4 further drives the driving gear 20 to rotate, and the driving gear 20 drives the driving rack 2 to perform a linear motion, thereby driving the claw assembly 21 to move to the unlocking position.

[0057] For the pot lid opening and closing structure provided in this embodiment, the driving device and the unlocking component are arranged on the support plate 7, and the support plate 7 is arranged above the heat preservation cover plate 8. By arranging the support plate 7, a support platform can be provided for the driving device and the unlocking component.

[0058] Correspondingly, the claws on the claw assembly 21 extend towards the outer edge of the inner pot by themselves. When the claws move to the locking position, the claws clamp the edge of the inner pot and the heat preservation cover plate 8 tightly together.

[0059] The pot lid opening and closing structure provided in this embodiment further includes a heat preservation cover plate 8 arranged below the inner lid 1. A jacking structure is arranged between the heat preservation cover plate 8 and the inner lid 1, and the jacking structure is used to drive the unlocking component to tilt away from the inner pot under the drive of the heat preservation cover plate 8.

[0060] In this embodiment, the jacking structure includes: a jacking rod 9, the bottom end of which is connected to the heat preservation cover plate 8, and the top end abuts against the unlocking component; a spring 10, and the jacking rod 9 is arranged through the spring 10.

[0061] Specifically, by arranging the spring 10, there is a certain gap between the heat preservation cover plate 8 and the support plate 7. Once the heat preservation cover plate 8 tilts, the support plate 7 will be driven by the spring 10 to tilt.

[0062] For the pot lid opening and closing structure provided in this embodiment, a receiving cavity 11 for receiving the jacking rod 9 and the spring 10 is arranged on the inner lid 1, and a through hole 12 for the jacking rod 9 to pass through is arranged in the receiving cavity 11. When the heat preservation cover plate 8 does not tilt, the end of the jacking rod 9 will be hidden inside the receiving cavity 11. When the heat preservation cover plate 8 tilts, the end of the jacking rod 9 will abut against the support plate 7 through the through hole 12. After the heat preservation cover plate 8 stops tilting, the jacking rod 9 will retract into the receiving cavity 11 under the action of the spring 10.

[0063] The pot lid opening and closing structure provided by this embodiment, the driving racks 2 are two groups and are arranged along the height direction, and a driving gear 20 is arranged between the two groups of driving racks 2.

[0064] Since the driving gear 20 is simultaneously arranged between the two driving racks 2, when the driving gear 20 rotates, it can drive the two driving racks 2 to move closer or farther synchronously, so as to realize the driving of the two groups of driving gears 20 through a set of power devices.

[0065] Embodiment 2

[0066] This embodiment provides a cooking device, including: the pot lid opening and closing structure provided by Embodiment 1; a pot body 14, on which there is a receiving cavity 11 for receiving an inner pot, and the pot lid opening and closing structure is arranged in the receiving cavity 11; an unlocking hole 15 is formed on one side of the pot body 14 or the pot lid where the pot lid opening and closing structure is located, and the unlocking hole 15 is arranged opposite to the unlocking shaft 6 of the pot lid opening and closing structure.

[0067] In the cooking device provided by this embodiment, a sealing ring 13 is arranged at a position corresponding to the inner pot on the heat preservation cover plate 8, and the sealing ring 13 extends towards the inner pot.

[0068] A sealing ring 13 is arranged at a position corresponding to the inner pot on the heat preservation cover plate 8, and the sealing ring 13 extends towards the inner pot. Since the sealing ring 13 extends towards the inner pot, when the heat preservation cover plate 8 moves upward under the pressure of the inner pot, because the sealing ring 13 itself extends towards the inner pot, even if the heat preservation cover plate 8 moves upward a certain distance, at this time, due to the limitation of the sealing ring 13, the heat preservation cover plate 8 will not be separated from the inner pot, nor will it shake radially. At the same time, when the pressure of the inner pot decreases, due to the action of the sealing ring 13, the heat preservation cover plate 8 can return to the inner pot along the original path, thus ensuring the position accuracy between the heat preservation cover plate 8 and the inner pot.

[0069] In this embodiment, as Figure 6 shown, the sealing ring includes a covering part 131, which is covered on the heat preservation cover plate 8; and a supporting part 132, which is connected to the covering part 131 through a connecting part.

[0070] In the cooking device provided by this embodiment, a hollow column 16 extends in the direction of the unlocking shaft 6 in the unlocking hole 15.

[0071] By arranging the hollow column 16, a movement path can be provided for unlocking parts, such as a screwdriver, etc., so as to ensure the stable movement of the unlocking part and ensure that the unlocking part can be aligned with the unlocking hole 15.

[0072] In the cooking device provided in this embodiment, the unlocking member is a knob 17 provided on the hollow column 16, and the knob 17 is provided with unlocking ridges and / or unlocking grooves 61 that cooperate with the unlocking grooves 61 and / or the unlocking ridges.

[0073] After the knob 17 is docked with the unlocking shaft 6 through the cooperation between the unlocking groove 61 and the unlocking ridge, an external force is directly applied to the knob 17 to cause the knob 17 to rotate, thereby realizing the rotation of the unlocking shaft 6.

[0074] In the cooking device provided in this embodiment, as Figure 7 shown, a cover body 18 is provided on the knob 17, and a return spring 19 is provided inside the cover body 18. When no external force acts on the knob 17, there is a certain gap between the end of the knob 17 and the end of the unlocking shaft 6. When it is necessary to manipulate the unlocking shaft 6, an external force is pressed on the knob 17. At this time, the knob 17 causes the return spring 19 to contract, and the knob 17 moves further forward until it contacts the unlocking shaft 6.

[0075] Obviously, the above embodiments are merely examples given 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 the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A lid opening and closing structure, characterized in that, Comprising: A driving device, arranged on the inner lid (1), the driving device comprising: A driving rack (2); A driving source (3) with a driving gear (20) arranged thereon, the driving gear (20) being engaged with the driving rack (2), a claw assembly being connected to the driving rack (2), the claw assembly extending towards the inner pot, the claw assembly having a locking position close to the inner lid (1) and an unlocking position away from the inner lid (1); Further comprising: An unlocking assembly, arranged on the inner lid (1), the unlocking assembly comprising an unlocking gear (4), the unlocking gear (4) acting on the driving device to drive the claw assembly to move between the locking position and the unlocking position; The driving device and the unlocking assembly are arranged on a support plate (7), the support plate (7) being arranged above the inner lid (1); The pot lid opening and closing structure further comprises a heat preservation cover plate (8) arranged below the inner lid (1), a lifting structure being arranged between the heat preservation cover plate (8) and the inner lid (1), the lifting structure being used to drive the unlocking assembly to tilt away from the inner pot under the drive of the heat preservation cover plate (8), the lifting structure comprising: A push rod (9), the bottom end of which is connected to the heat preservation cover plate (8) and the top end of which abuts against the unlocking assembly; A spring (10), the push rod (9) being arranged through the spring (10).

2. The lid opening and closing structure according to claim 1, characterized in that, The unlocking assembly comprises: a bracket (5), arranged on the inner lid (1), the unlocking gear (4) being rotatably arranged on the bracket (5).

3. The lid opening and closing structure according to claim 2, characterized in that, An unlocking shaft (6) is connected to the unlocking gear (4), and an unlocking groove (61) and / or unlocking ridges are arranged at one end of the unlocking shaft (6) away from the unlocking gear (4).

4. The lid opening and closing structure according to claim 3, characterized in that, The unlocking groove (61) is a cross groove.

5. The lid opening and closing structure according to any one of claims 1-4, characterized in that, The unlocking gear (4) is engaged with the driving gear.

6. The lid opening and closing structure according to claim 1, characterized in that, An accommodation cavity (11) for accommodating the push rod (9) and the spring (10) is arranged on the inner lid (1), and a through hole (12) for the push rod (9) to pass through is arranged in the accommodation cavity (11).

7. The lid opening and closing structure according to claim 6, characterized in that, A sealing ring (13) is arranged on the heat preservation cover plate (8), and the sealing ring (13) extends towards the inner lid (1).

8. The lid opening and closing structure according to claim 7, characterized in that, The sealing ring (13) comprises: A covering part (131), covering the heat preservation cover plate (8); A supporting part (132), connected to the covering part (131) through a connecting part.

9. The lid opening and closing structure according to any one of claims 1-4, characterized in that, There are two groups of the driving racks (2) arranged along the height direction, and the driving gear is arranged between the two groups of the driving racks (2).

10. A cooking device, characterized in that, Comprising: The pot lid opening and closing structure according to any one of claims 1-9; A pot body (14) with an accommodation cavity (11) for accommodating an inner pot arranged thereon, the pot lid opening and closing structure being arranged in the accommodation cavity (11); An unlocking hole (15) is formed on one side of the pot body (14) or the pot lid where the pot lid opening and closing structure is located, and the unlocking hole (15) is arranged opposite to the unlocking shaft (6) of the pot lid opening and closing structure.

11. The cooking device according to claim 10, wherein The supporting part (132) of the sealing ring (13) of the pot lid opening and closing structure is arranged on the inner wall of the pot body (14).

12. The cooking device according to claim 11, wherein, The unlocking hole (15) extends in a direction towards the unlocking shaft (6) and is provided with a hollow column (16).

13. The cooking device according to claim 12, wherein, Further included are: An unlocking groove (61) and / or an unlocking rib are provided at one end of the unlocking shaft (6) away from the unlocking gear (4), a knob (17) provided on the hollow column (16), and an unlocking rib and / or an unlocking groove (61) that cooperate with the unlocking groove (61) and / or the unlocking rib are provided on the knob (17).

14. The cooking device according to claim 13, wherein A cover body (18) is provided on the knob (17), and a return spring (19) is provided inside the cover body (18).

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