Lid opening and closing device, pressure cooker lid and pressure cooker

Abstract

The application provides an opening and closing cover device, a micro-pressure cooker cover and a micro-pressure cooker. The opening and closing cover device comprises a mounting seat, a connecting hole is arranged at the top of the mounting seat, and at least one first locking part is arranged on the hole wall of the connecting hole; two clamping pieces are oppositely arranged along the length direction of the mounting seat, the clamping pieces are slidingly connected to the mounting seat and can slide along the length direction of the mounting seat; a rotating piece is arranged in the connecting hole, the rotating piece is rotationally connected to the mounting seat, and the rotating piece is drivingly connected to the clamping pieces; a sliding sleeve is sleeved on the outside of the rotating piece and can synchronously rotate with the rotating piece, at least one second locking part is arranged on the outer periphery of the sliding sleeve, and the sliding sleeve can slide along the axial direction of the rotating piece so that the second locking part and the first locking part are locked or unlocked. The application can stably and reliably keep the micro-pressure cooker cover in a certain use state.

Description

Technical Field

[0001] This application relates to the field of kitchen utensils technology, and in particular to an opening and closing lid device, a micro-pressure pot lid, and a micro-pressure cookware. Background Technology

[0002] Pressure cookers create an environment slightly higher than atmospheric pressure inside the pot, accelerating water boiling and raising the temperature, thus shortening cooking time while preserving nutrients in food. A pressure cooker consists of a pot body and a pressure-controlled lid. The lid has a movable clamp that grips the edge of the pot body when it is closed, securing the lid for pressure cooking. However, under vibration or external force, the clamp can move, making it difficult to reliably maintain the lid in a stable position, thus affecting the user experience. Utility Model Content

[0003] This application provides an opening and closing device, a micro-pressure pot lid, and a micro-pressure cooker, so that the micro-pressure pot lid can be stably and reliably maintained in a certain usage state, thereby improving the user experience of the micro-pressure cooker.

[0004] The first aspect of this application provides an opening and closing cover device, which includes: The mounting base has a connecting hole on its top, and the wall of the connecting hole has at least one first locking part. Two clamping members are arranged opposite each other along the length direction of the mounting base. The clamping members are slidably connected to the mounting base and can slide along the length direction of the mounting base to achieve clamping or unclamping. A rotating component is inserted through the connecting hole. The rotating component is rotatably connected to the mounting base and is drively connected to the clamping component. When the rotating component is rotated, the rotating component drives the clamping component to slide. A sliding sleeve is fitted around the outside of the rotating member and can rotate synchronously with the rotating member. The outer periphery of the sliding sleeve is provided with at least one second locking part. The sliding sleeve can slide along the axial direction of the rotating member so that the second locking part can lock or unlock with the first locking part.

[0005] The opening and closing device provided in this application includes a mounting base, two clamping members, a rotating member, and a sliding sleeve. The top of the mounting base is provided with a connecting hole, and the wall of the connecting hole is provided with at least one first locking part. The two clamping members are arranged opposite each other along the length direction of the mounting base. The clamping members are slidably connected to the mounting base and can slide along the length direction of the mounting base to achieve clamping or unclamping. The rotating member passes through the connecting hole and is rotatably connected to the mounting base. The rotating member is also kinetically connected to the clamping members. When the user operates the rotating member to rotate, the rotating member drives the clamping members to slide, thereby enabling the clamping members to achieve clamping or unclamping. The sliding sleeve is sleeved on the outside of the rotating member and can rotate synchronously with the rotating member. The outer periphery of the sliding sleeve is provided with at least one second locking part. The sliding sleeve can slide along the axial direction of the rotating member to lock or unlock the second locking part with the first locking part. Therefore, when the second locking part is engaged with the first locking part, the connecting hole provides circumferential restraint to the sliding sleeve, preventing it from rotating. This locks the rotating component, sliding sleeve, and mounting base into a rigid whole, effectively preventing the movement of the clamping component and maintaining the micro-pressure cooker lid's operating state. When the second locking part is disengaged from the first locking part, the connecting hole releases its circumferential restraint on the sliding sleeve, allowing it to rotate freely with the rotating component. This allows the rotating component to drive the clamping component, enabling the user to easily change the micro-pressure cooker lid's operating state as needed. Furthermore, because the sliding sleeve is clamped within the annular gap between the rotating component and the connecting hole, it not only limits the swaying amplitude of the rotating component, increasing its rotational stability, but also maximizes torque within a limited space, reducing the interaction force between the second and first locking parts and preventing damage to either part.

[0006] Optionally, the first locking part includes a protrusion, and the second locking part includes a groove extending axially along the rotating member; when the protrusion slides into the groove, the second locking part locks with the first locking part; when the protrusion disengages from the groove, the second locking part releases from the first locking part. On one hand, by placing the protrusion on the inner wall of the connecting hole and the groove on the sliding sleeve, the wall thickness of the connecting hole can be avoided from restricting the protrusion, while also strengthening the connecting hole, allowing for a smaller wall thickness and reducing the overall weight of the opening and closing device. On the other hand, by placing a protrusion with a smaller axial dimension in the connecting hole and a groove with a larger axial dimension in the sliding sleeve, the mounting base can be made to have a smaller height, reducing the overall volume of the opening and closing device.

[0007] Optionally, the second locking part includes two sliding grooves, which are spaced apart along the outer periphery of the sliding sleeve. When the rotating member drives the clamping member to the clamping state, the protrusion faces one of the sliding grooves, so that the micro-pressure pot lid can be stably and reliably held in the clamping state, preventing the clamping failure caused by factors such as vibration or misoperation during cooking, thus affecting the micro-pressure cooking effect. When the rotating member drives the clamping member to the unclamping state, the protrusion faces the other sliding groove, so that the micro-pressure pot lid can be stably and reliably held in the unclamping state, preventing interference or collision between the clamping member and the pot body when the user opens or closes the lid.

[0008] Optionally, the outer periphery of the rotating component is provided with a first protrusion, and the inner wall of the sliding sleeve is provided with a second protrusion. Both the second and first protrusions extend along the axial direction of the rotating component, with the second protrusion directly opposite the first protrusion. The cross-sections of the second and first protrusions are in a concave-convex fit, thereby realizing sliding guidance and torque transmission between the rotating component and the sliding sleeve. Since the annular area between the rotating component and the sliding sleeve is only partially fitted by the first and second protrusions, the mating area can be reduced, thus reducing the impact of machining and assembly errors. Furthermore, both the rotating component and the sliding sleeve can maintain a thin-walled structure, reducing the overall weight of the opening and closing device.

[0009] Optionally, a portion of the clamping member is exposed below the mounting base, and the clamping member moves within the edge of the mounting base. When viewed from above, the clamping member is not visible, which simplifies the external form of the opening and closing device, improves its overall integrity and appearance, and allows the mounting base to protect the clamping member, preventing it from pinching or injuring the user and preventing the user from violently operating the clamping member.

[0010] Optionally, the opening and closing device further includes: a gripping member, which covers the top of the connecting hole and is fixedly connected to the rotating member; and an unlocking member, which is disposed within the gripping member and can slide radially along the gripping member, a portion of which protrudes from the outer periphery of the gripping member, and a wedge-shaped surface abutting against the sliding sleeve. While the user grips the gripping member, they can press the unlocking member, causing it to move radially. The wedge-shaped surface converts the radial movement of the unlocking member into axial movement of the sliding sleeve, thereby disengaging the second locking part from the first locking part, thus simplifying the opening and closing operation of the cover.

[0011] Optionally, the opening and closing device further includes a connecting rod, the two ends of which are respectively hinged to the rotating component and the clamping component. The rotating component, the connecting rod, and the clamping component constitute a crank-slider mechanism. Through the crank-slider mechanism, the rotation of the rotating component is converted into the sliding of the clamping component, resulting in a simple and flexible structure with stable and efficient operation.

[0012] Optionally, the clamping member has a stop surface, and the connecting rod is disposed on one side of the stop surface; when the clamping member is released, the connecting rod abuts against the stop surface, and the connecting rod and the clamping member are in a straight line. On the one hand, the stop surface restricts the rotation angle of the connecting rod, ensuring that the rotating component can stop in time when the clamping member moves outward to its position; on the other hand, in the released state, the crank-slider mechanism is located at the dead point, which can prevent the user from violently operating the clamping member to slide when the cover is open, thus preventing damage to the internal mechanism.

[0013] The second aspect of this application provides a micro-pressure cooker lid, comprising a lid body and any of the opening and closing devices provided in this application, wherein the opening and closing device is disposed above the lid body. Thus, when the second locking part is engaged with the first locking part, the connecting hole circumferentially limits the sliding sleeve, preventing the sliding sleeve from rotating. This locks the rotating component, the sliding sleeve, and the mounting base together into a rigid whole, thereby forcibly preventing the movement of the clamping component and keeping the micro-pressure cooker lid in its operating state unchanged. When the second locking part is disengaged from the first locking part, the connecting hole releases the circumferential limitation on the sliding sleeve, allowing the sliding sleeve to rotate freely with the rotating component. This allows the clamping component to move via the rotating component, facilitating the user to change the operating state of the micro-pressure cooker lid as needed. Furthermore, since the sliding sleeve is clamped within the annular gap between the rotating component and the connecting hole, it not only limits the swaying amplitude of the rotating component and increases the stability of its rotation, but also maximizes the torque within a limited space, reducing the interaction force between the second and first locking parts and preventing damage to either the second or first locking part.

[0014] A third aspect of this application provides a micro-pressure cooker, comprising a pot body and any of the micro-pressure lids provided in this application. Handles are provided on opposite sides of the pot body, and a slot is provided on the side of the handle facing the axis of the pot body. When the micro-pressure lid is closed onto the opening of the pot body, both ends of the mounting base can respectively engage with the slots, and the clamping member can clamp the edge of the pot body. On one hand, the slots provide circumferential restraint to the micro-pressure lid, preventing relative rotation between the lid and the pot body during cooking. Furthermore, the locking of the second locking part with the first locking part ensures that the micro-pressure lid is stably and reliably held in a clamped state, thereby increasing the stability of the micro-pressure cooker during cooking. On the other hand, the clamping member is hidden within the space formed by the mounting base and the handle, which not only improves the safety of using the micro-pressure cooker, preventing injury to the user and preventing the user from violently operating the clamping member, but also improves the overall integrity and appearance of the micro-pressure cooker.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a micro-pressure cooker provided in an embodiment of this application; Figure 2 This is a partial structural schematic diagram of the opening and closing cover device provided in the embodiments of this application; Figure 3 for Figure 2 A diagram from another angle; Figure 4 for Figure 3 Internal structure diagram; Figure 5 This is a schematic diagram of the locking structure between the sliding sleeve and the connecting hole provided in an embodiment of this application; Figure 6 This is a schematic diagram of the mating structure between the sliding sleeve and the rotating component provided in an embodiment of this application; Figure 7 This is a schematic diagram of the overall structure of the opening and closing cover device provided in the embodiments of this application; Figure 8 for Figure 7 Internal structure diagram; Figure 9 This is a schematic diagram of another micro-pressure cooker provided in an embodiment of this application.

[0017] Figure label: 10-Pot body; 100-handle; 100a - Card slot; 20-Pressure cooker lid; 200-Lid; 202 - Opening and closing cover device; 1-Mounting base; 1a - Base plate; 1b - Upper shell; 11-Connecting hole; 12-First locking part; 121-Bump; 2-Clamping components; 2a-Clamping part; 2b - Push plate; 21-Stop surface; 3-Rotating component; 31 - First convex strip; 4-Sliding sleeve; 41-Second locking part; 411-Slide groove; 42 - Second convex strip; 43-Wedge-shaped surface; 5- Grip element; 6-Unlocking parts; 61-Reset component; 7-Linkage; 8- Bolt. The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0021] like Figure 1 As shown in the illustration, this application provides a micro-pressure cooker lid 20, which can be fitted onto the opening of a pot body 10 and together with the pot body 10 constitute a micro-pressure cooker. The micro-pressure cooker lid 20 includes a lid body 200 and an opening / closing device 202. The lid body 200 cooperates with the opening of the pot body 10. A sealing ring can be provided on the edge of the lid body 200, and a micro-pressure valve can be provided on the lid body 200, thereby creating a sealed environment inside the pot and generating the desired micro-pressure. The opening / closing device 202 is disposed above the lid body 200. When the micro-pressure cooker lid 20 is fitted onto the opening of the pot body 10, the opening / closing device 202 can clamp the edge of the pot body 10, thereby locking the micro-pressure cooker lid 20 onto the pot body 10 and meeting the micro-pressure cooking requirements.

[0022] like Figures 2-6 As shown, the lid opening and closing device 202 provided in this embodiment includes a mounting base 1 and two clamping members 2. The mounting base 1 is used to connect to the lid body 200. For example, the mounting base 1 can be connected to the lid body 200 by means of screws or buckles, thereby realizing the installation and fixation of the lid opening and closing device 202 on the lid body 200. The two clamping members 2 are arranged opposite to each other along the length direction of the mounting base 1. The clamping members 2 are slidably connected to the mounting base 1 and can slide along the length direction of the mounting base 1 to realize clamping or unclamping. Specifically, when the clamping members 2 slide inward (i.e., when the two clamping members 2 are close to each other), the clamping members 2 can realize clamping, that is, the clamping members 2 can clamp the edge of the pot body 10, thereby locking the micro-pressure pot lid 20 on the pot body 10; when the clamping members 2 slide outward (i.e., when the two clamping members 2 are far apart), the clamping members 2 can unclamp, that is, the clamping members 2 can detach from the edge of the pot body 10, thereby facilitating the user to perform lid opening or closing operations.

[0023] Specifically, the mounting base 1 may include a detachably connected base plate 1a and an upper shell 1b, with the upper shell 1b inverted on the base plate 1a, forming a box-shaped structure with an internal cavity. The clamping member 2 may include a clamping part 2a and a push plate 2b connected to each other. The clamping part 2a and the push plate 2b may be connected to each other by a non-detachable method such as integral molding, or by a detachable method such as screws. The clamping part 2a is located at the edge of the cover 200 to achieve a snap-fit. The push plate 2b slides with the mounting base 1 to achieve guiding and limiting functions.

[0024] Furthermore, the opening and closing cover device 202 also includes a rotating component 3. The top of the mounting base 1 is provided with a connecting hole 11, and the wall of the connecting hole 11 is provided with at least one first locking part 12. The rotating component 3 passes through the connecting hole 11, and is rotatably connected to the mounting base 1. The rotating component 3 is also drively connected to the clamping component 2. When the user operates the rotating component 3 to rotate, the rotating component 3 drives the clamping component 2 to slide, thereby enabling the clamping component 2 to clamp or release the clamp.

[0025] Furthermore, the opening and closing device 202 also includes a sliding sleeve 4. The sliding sleeve 4 is sleeved on the outside of the rotating member 3 and can rotate synchronously with the rotating member 3 (that is, the sliding sleeve 4 and the rotating member 3 are fixed relative to each other in the circumferential direction and cannot rotate relative to each other). The user can directly operate the sliding sleeve 4 to rotate, thereby driving the rotating member 3 to rotate. The outer periphery of the sliding sleeve 4 is provided with at least one second locking part 41. The sliding sleeve 4 can slide along the axial direction of the rotating member 3 so that the second locking part 41 can lock or unlock with the first locking part 12. When the second locking part 41 and the first locking part 12 are locked together, the connecting hole 11 forms a circumferential limit on the sliding sleeve 4, preventing the sliding sleeve 4 from rotating. This locks the rotating part 3, the sliding sleeve 4, and the mounting base 1 into a rigid whole, thus forcibly preventing the movement of the clamping part 2 and keeping the micro-pressure cooker lid 20 in its operating state unchanged. When the second locking part 41 and the first locking part 12 are unlocked, the connecting hole 11 releases the circumferential limit on the sliding sleeve 4, allowing the sliding sleeve 4 to rotate freely with the rotating part 3. This allows the clamping part 2 to move via the rotating part 3, facilitating the user to change the operating state of the micro-pressure cooker lid 20 as needed. Furthermore, since the sliding sleeve 4 is clamped within the annular gap between the rotating part 3 and the connecting hole 11, it not only limits the swaying amplitude of the rotating part 3 and increases the stability of its rotation, but also maximizes the torque within the limited space, reducing the interaction force between the second locking part 41 and the first locking part 12 and preventing damage to either part.

[0026] Specifically, when it is necessary to change the usage state of the pressure cooker lid 20, the sliding sleeve 4 needs to be slid first to disengage the second locking part 41 from the first locking part. As the rotating part 3 rotates, the second locking part 41 can correspond to or be offset from the first locking part 12. When the second locking part 41 corresponds to the first locking part 12, the sliding sleeve 4 can slide along the axial direction of the rotating part 3, and the second locking part 41 can lock with the first locking part. The pressure cooker lid 20 can be stably maintained in the expected usage state (e.g., the clamping state, the unclamping state, or the state of performing other functions). When the second locking part 41 is offset from the first locking part 12, the sliding sleeve 4 cannot slide or can only slide a small distance, and the second locking part 41 cannot lock with the first locking part 12. The pressure cooker lid 20 is in an unstable intermediate state.

[0027] One end of the sliding sleeve 4 can be connected to an elastic element (e.g., a spring, not shown in the figure), which forces the sliding sleeve 4 to move in the direction of locking. When the second locking part 41 corresponds to the first locking part 12, under the action of the elastic element, the sliding sleeve 4 can automatically slide along the axial direction of the rotating part 3, so that the second locking part 41 and the first locking part 12 are locked together. This eliminates the need for manual locking by the user, making the operation simpler and ensuring that the micro-pressure cooker lid 20 remains unchanged in its operating state.

[0028] Furthermore, the first locking part 12 includes a protrusion 121, and the second locking part 41 includes a groove 411, which extends along the axial direction of the rotating member 3. When the protrusion 121 slides into the groove 411, the second locking part 41 locks with the first locking part 12; when the protrusion 121 disengages from the groove 411, the second locking part 41 releases from the first locking part 12. On the one hand, by setting the protrusion 121 on the inner wall of the connecting hole 11 and setting the groove 411 on the sliding sleeve 4, the wall thickness of the connecting hole 11 can be avoided from restricting the protrusion 121, and the connecting hole 11 can be strengthened, thereby allowing the connecting hole 11 to have a smaller wall thickness and reducing the overall weight of the opening and closing cover device 202. On the other hand, by setting the protrusion 121 with a smaller axial dimension in the connecting hole 11 and setting the groove 411 with a larger axial dimension in the sliding sleeve 4, the mounting base 1 can have a smaller height, reducing the overall volume of the opening and closing cover device 202.

[0029] Furthermore, the second locking part 41 includes two sliding grooves 411, which are spaced apart along the outer periphery of the sliding sleeve 4. When the rotating member 3 drives the clamping member 2 to the clamping state, the protrusion 121 is aligned with one of the sliding grooves 411, so that the micro-pressure pot lid 20 can be stably and reliably held in the clamping state, preventing the clamping failure caused by factors such as vibration or misoperation during cooking, thus affecting the micro-pressure cooking effect; when the clamping member 2 is in the unclamping state, the protrusion 121 is aligned with the other sliding groove 411, so that the micro-pressure pot lid 20 can be stably and reliably held in the unclamping state, preventing interference or collision between the clamping member 2 and the pot body 10 when the user opens or closes the lid.

[0030] Furthermore, the outer periphery of the rotating component 3 is provided with a first protrusion 31, and the inner wall of the sliding sleeve 4 is provided with a second protrusion 42. Both the second protrusion 42 and the first protrusion 31 extend along the axial direction of the rotating component 3, with the second protrusion 42 directly opposite the first protrusion 31. The cross-sections of the second protrusion 42 and the first protrusion 31 are in a concave-convex fit, thereby realizing the sliding guidance and torque transmission between the rotating component 3 and the sliding sleeve 4. Since the annular area between the rotating component 3 and the sliding sleeve 4 is only partially fitted by the first protrusion 31 and the second protrusion 42, the mating area can be reduced, the influence of machining errors and assembly errors can be reduced, and both the rotating component 3 and the sliding sleeve 4 can maintain a thin-walled structure, reducing the overall weight of the opening and closing cover device 202.

[0031] Specifically, within the cross-section, the side of the first protrusion 31 facing away from the axis of the rotating member 3 can be configured as a non-linear shape such as an outwardly convex arc or a wave. Correspondingly, the side of the second protrusion 42 facing the axis of the rotating member 3 can be configured as a non-linear shape such as an inwardly concave arc or a wave, as long as the first protrusion 31 and the second protrusion 42 can form a concave-convex fit within the cross-section.

[0032] Furthermore, a portion of the clamping member 2 protrudes below the mounting base 1, and the clamping member 2 moves within the edge of the mounting base 1. That is, the width of the clamping member 2 is no greater than the width of the mounting base 1, and the clamping member 2 does not protrude from the end of the mounting base 1 when it moves along the mounting base 1. Therefore, the clamping member 2 is not visible when viewed from above, which simplifies the external form of the opening and closing device 202, improves its overall integrity and appearance, and allows the mounting base 1 to protect the clamping member 2, preventing it from pinching or injuring the user and preventing the user from violently operating the clamping member 2.

[0033] Furthermore, the opening and closing device 202 also includes a connecting rod 7, with its two ends hinged to the clamping member 2 and the rotating member 3, respectively. The rotating member 3, the connecting rod 7, and the clamping member 2 constitute a crank-slider mechanism. Through the crank-slider mechanism, the rotation of the rotating member 3 is converted into the sliding of the clamping member 2. The structure is simple and flexible, and the operation is stable and efficient.

[0034] Furthermore, the clamping member 2 is provided with a stop surface 21, and the connecting rod 7 is disposed on one side of the stop surface 21. When the clamping member 2 is released from clamping, the connecting rod 7 abuts against the stop surface 21, and the connecting rod 7 and the clamping member 2 are in a straight line. On the one hand, the rotation angle of the connecting rod 7 is limited by the stop surface 21, ensuring that the rotating member 3 can stop in time when the clamping member 2 moves outward to the position (i.e., the position where the clamping member 2 is released from clamping); on the other hand, in the released state, the crank-slider mechanism is located at the dead point position, which can prevent the user from violently operating the clamping member 2 to slide when the cover is open, thus preventing damage to the internal mechanism.

[0035] like Figure 7 and Figure 8 As shown, the opening and closing device 202 further includes a grip 5. The grip 5 covers the top of the connecting hole 11, forming a closed shape above the mounting base 1, which improves the overall integrity and appearance of the opening and closing device 202. The grip 5 is connected and fixed to the rotating member 3, meaning that the grip 5 and the rotating member 3 move synchronously. By squeezing and rotating the larger diameter grip 5, the user can drive the rotating member 3 to rotate synchronously, which can increase the torque and achieve labor-saving operation.

[0036] Specifically, the gripper 5 and the rotating part 3 can be connected and fixed by bolts 8 to form an axial limit, preventing the gripper 5 and the rotating part 3 from moving relative to each other along the axial direction. A circumferential limiting structure is provided between the gripper 5 and the rotating part 3 or between the gripper 5 and the sliding sleeve 4 to prevent the gripper 5 and the rotating part 3 from rotating relative to each other.

[0037] Furthermore, the opening and closing device 202 also includes an unlocking member 6. The unlocking member 6 is disposed within the grip member 5 and can slide radially along the grip member 5. A portion of the unlocking member 6 protrudes from the outer periphery of the grip member 5, and a wedge-shaped surface 43 abuts against the unlocking member 6 and the sliding sleeve 4. While the user squeezes the grip member 5, they can press the unlocking member 6, causing it to move radially. The wedge-shaped surface 43 converts the radial movement of the unlocking member 6 into axial movement of the sliding sleeve 4, thereby disengaging the second locking part 41 from the first locking part 12, thus simplifying the opening and closing operation of the lid.

[0038] One end of the unlocking component 6 can be connected to a reset component 61 (e.g., a spring), which forces the unlocking component 6 to move outward and reset. In other words, when the user releases the unlocking component 6, the unlocking component 6 can automatically move outward under the action of the reset component 61, so that the user can press the unlocking component 6 again.

[0039] In addition, such as Figure 1 and Figure 9 As shown, this application embodiment also provides a micro-pressure cooker, which includes a pot body 10 and any type of micro-pressure pot lid 20 provided in this application embodiment. When the micro-pressure pot lid 20 is closed on the opening of the pot body 10, the clamping member 2 can clamp the edge of the pot body 10.

[0040] like Figure 9 As shown, furthermore, handles 100 are provided on opposite sides of the pot body 10, and a slot 100a is provided on the side of the handle 100 facing the axis of the pot body 10. Both ends of the mounting base 1 are respectively engaged in the slot 100a. On the one hand, the slot 100a forms a circumferential limit on the micro-pressure pot lid 20, preventing the micro-pressure pot lid 20 from rotating relative to the pot body 10, which can increase the stability of the micro-pressure cooker during cooking. On the other hand, the clamping member 2 is hidden within the space enclosed by the mounting base 1 and the handle 100, which can improve the safety of using the micro-pressure cooker, avoid injuring the user, and prevent the user from violently operating the clamping member 2, and also improve the overall integrity and appearance of the micro-pressure cooker.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lid opening and closing device, characterized in that, include: Mounting base (1), the top of the mounting base (1) is provided with a connecting hole (11), and the hole wall of the connecting hole (11) is provided with at least one first locking part (12). Two clamping members (2) are arranged opposite each other along the length direction of the mounting base (1). The clamping members (2) are slidably connected to the mounting base (1) and can slide along the length direction of the mounting base (1) to achieve clamping or unclamping. A rotating component (3) is inserted through the connecting hole (11). The rotating component (3) is rotatably connected to the mounting base (1). The rotating component (3) is drively connected to the clamping component (2). When the rotating component (3) is rotated, the rotating component (3) drives the clamping component (2) to slide. The sliding sleeve (4) is sleeved on the outside of the rotating member (3) and can rotate synchronously with the rotating member (3). The outer periphery of the sliding sleeve (4) is provided with at least one second locking part (41). The sliding sleeve (4) can slide along the axial direction of the rotating member (3) so that the second locking part (41) can lock or unlock with the first locking part (12).

2. The opening and closing cover device according to claim 1, characterized in that, The first locking part (12) includes a protrusion (121), and the second locking part (41) includes a groove (411) that extends along the axial direction of the rotating member (3). When the protrusion (121) slides into the groove (411), the second locking part (41) locks with the first locking part (12); When the protrusion (121) disengages from the groove (411), the second locking part (41) is released from locking with the first locking part (12).

3. The opening and closing cover device according to claim 2, characterized in that, The second locking part (41) includes two said sliding grooves (411), which are distributed at intervals along the outer periphery of the sliding sleeve (4); When the rotating member (3) drives the clamping member (2) to move to the clamping state, the protrusion (121) is directly opposite one of the grooves (411). When the rotating member (3) drives the clamping member (2) to move to the state of unclamping, the protrusion (121) is facing the other groove (411).

4. The opening and closing cover device according to claim 1, characterized in that, The outer periphery of the rotating component (3) is provided with a first protrusion (31), and the inner wall of the sliding sleeve (4) is provided with a second protrusion (42). The second protrusion (42) and the first protrusion (31) both extend along the axial direction of the rotating component (3). The second protrusion (42) is directly opposite the first protrusion (31), and the cross-sections of the second protrusion (42) and the first protrusion (31) are in concave-convex fit.

5. The opening and closing cover device according to claim 1, characterized in that, A portion of the clamping member (2) is exposed below the mounting base (1), and the clamping member (2) moves within the edge of the mounting base (1).

6. The opening and closing cover device according to any one of claims 1-5, characterized in that, The opening and closing cover device further includes: The grip (5) covers the top of the connecting hole (11) and is connected and fixed to the rotating part (3). The unlocking member (6) is disposed inside the grip (5) and can slide radially along the grip (5). A portion of the unlocking member (6) is exposed on the outer periphery of the grip (5). A wedge-shaped surface (43) abuts against each other between the unlocking member (6) and the sliding sleeve (4).

7. The opening and closing cover device according to any one of claims 1-5, characterized in that, The opening and closing cover device also includes a connecting rod (7), the two ends of which are respectively hinged to the rotating part (3) and the clamping part (2). The rotating part (3), the connecting rod (7) and the clamping part (2) constitute a crank-slider mechanism.

8. The opening and closing cover device according to claim 7, characterized in that, The clamping member (2) is provided with a stop surface (21), and the connecting rod (7) is disposed on one side of the stop surface (21); When the clamping member (2) releases its clamping action, the connecting rod (7) abuts against the stop surface (21), and the connecting rod (7) and the clamping member (2) are in a straight line.

9. A micro-pressure cooker lid, characterized in that, It includes a cover and an opening / closing device as described in any one of claims 1-8, wherein the opening / closing device is disposed above the cover.

10. A micro-pressure cooker, characterized in that, The pot includes a pot body and a micro-pressure pot lid as described in claim 9. The pot body is provided with handles on opposite sides, and the handles are provided with a slot on the side facing the axis of the pot body. When the micro-pressure pot lid is closed on the opening of the pot body, the two ends of the mounting base (1) can be respectively engaged in the slot, and the clamping member (2) can clamp the edge of the pot body.

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